JP6659360B2 - How to repair switchgear - Google Patents

Description

  The present invention relates to a repair method of a switchgear having at least a function as a disaster-prevention switchgear for forming a disaster-prevention section by closing and moving the switchgear when a fire occurs, for example, when a shutter curtain is a switchgear. Various types of shutter devices, such as a shutter device for combined use of management and disaster prevention, having a function as a shutter device for exclusive use for disaster prevention, a function as a shutter device for disaster prevention, and a function as a management shutter device for opening and closing an opening such as an entrance with a shutter curtain. It can be used for a switchgear.

  Patent Document 1 below discloses a shutter curtain 35 which is an openable and closable movable body, a brake device A for stopping and moving the shutter curtain 35 by turning on and off, and a temperature. A fuse device 1 which is configured to include a fuse 3 and is a fire detecting device for detecting the occurrence of a fire by melting the thermal fuse 3 by heat generated by the fire. , Which includes an automatic closing device C that is an automatic closing device for turning off the brake device A and starting the closing movement of the shutter curtain 35, and a seat plate switch 59 that is an obstacle detection switch. When the curtain 35 comes into contact with an obstacle during the closing movement, an electric opening for electrically stopping the closing movement is performed. An electric shutter curtain stop device is a body stop device, are switchgear management and prevention combined shutter apparatus 100 having the shown.

  The electric shutter curtain stopping device provided in the shutter device 100 normally operates with electric power from a commercial power supply, and operates with electric power from a battery during a power failure.

  On the other hand, in recent years, when the shutter curtain abuts on an obstacle in the middle of a closing movement in an emergency such as a fire, instead of the electric opening / closing body stopping device described above, the closing movement is mechanically stopped. A management and disaster prevention combined shutter device provided with a mechanical shutter curtain stopping device, which is a mechanical opening / closing body stopping device, has been proposed (for example, see Patent Document 2).

  By providing such a mechanical shutter curtain stopping device in the shutter device, when the shutter curtain comes into contact with an obstacle during the closing movement in an emergency such as a fire or the like, electric power for stopping the closing movement is provided. Is no longer necessary.

JP 2006-336324 A JP 2014001582 A

  For this reason, a shutter device provided with an electric shutter curtain stopping device as shown in Patent Document 1 is modified to a shutter device provided with a mechanical shutter curtain stopping device as shown in Patent Document 2. There is a need to do so, and a device for reducing the cost of this renovation is required.

  An object of the present invention is to provide a method of repairing a switchgear capable of reducing the cost for repairing a switchgear having an electric switchgear stop device to a switchgear having a mechanical switchgear stop device. To provide.

  A method for repairing an opening / closing device according to the present invention includes an opening / closing body that is freely openable and closable, a brake device for stopping and allowing movement of the opening / closing body by turning on and off, and a thermal fuse. And a fire detection device for detecting the occurrence of the fire by melting the thermal fuse with heat generated by the fire, and turning off the brake device which has been turned on based on the operation of the fire detection device. An automatic closing device for starting the closing movement of the opening and closing body, and an electric opening and closing body for electrically stopping the closing movement when the opening and closing body comes into contact with an obstacle during the closing movement. And a stop device for mechanically stopping the closing movement when the opening / closing body abuts on the obstacle during the closing movement in an emergency such as a fire. A method for repairing a switchgear for repairing a switchgear provided with a mechanical switchgear stopping device, comprising: a first step of removing the electric switchgear stopping device; And a second step of arranging the mechanical opening / closing body stopping device, which is performed later, wherein at least a part of the fire detecting device is used as it is. .

  In the present invention, as described above, after the operation of removing the electric opening / closing member stopping device is performed, the operation of arranging the mechanical opening / closing member stopping device is performed. , At least a part of which is used as it is. In other words, at least a part of the fire detection device is used as it is.

  Here, when modifying a switchgear provided with an electric switchgear stop device into a switchgear provided with a mechanical switchgear stop device, the fire detection device also has a different type that does not include a thermal fuse. In the case where the fire detection device having the structure is modified (in other words, replaced), the cost required for the modification of the switchgear increases accordingly.

  However, in the present invention, when a switchgear provided with an electric switchgear stop device is modified to a switchgear provided with a mechanical switchgear stop device, an existing (in other words, existing) fire detection device is used for the fire detection device. At least a part of the sensing device is used as it is.

  For this reason, according to the present invention, it is necessary to repair the switchgear as compared with the case where the fire detecting device is modified to a fire detecting device of another type and structure not including the thermal fuse. Costs can be reduced.

  In the present invention, as described above, "at least a part of the fire detection device is used as it is", but an opening / closing device having an electric opening / closing member stopping device is referred to as a mechanical opening / closing member stopping device. When renovating a switchgear equipped with the equipment, the renovation work involves checking, repairing and adjusting the components and components of the existing fire detector, and the components and components of the existing fire detector. This includes a step of replacing part of a component (for example, a thermal fuse).

  In the present invention, the type and structure of the mechanical opening / closing body stopping device is such that when the opening / closing body comes into contact with an obstacle in the middle of the closing movement during an emergency such as a fire or when checking the operation of the opening / closing device. Any device may be used as long as it can stop the closing movement mechanically. For example, the mechanical opening / closing stop device has a slide member that is slidable to switch the brake device on and off. And a mechanical control device for mechanically controlling the brake device, and an opening / closing member that is disposed on the opening / closing member and contacts the obstacle during the closing movement, thereby connecting the opening / closing member and the string-shaped member. A mechanical coupling device that mechanically couples the string-shaped member to apply a tension due to the weight of the opening / closing body, and the string-shaped member includes a mechanical coupling device to a mechanical control device. Name what ’s extending It is possible.

  In the present invention, when the mechanical opening / closing body stopping device has the above-described type and structure, the first step includes a step of removing the automatic closing device, and the second step includes: A step of arranging the mechanical control device at or near the position where the automatic closing device was arranged, a step of arranging the mechanical coupling device on the opening / closing body, and a step performed after these steps, and Extending from the mechanical coupling device to the mechanical control device.

  According to this, compared to the case where the mechanical control device is arranged at the position where the automatic closing device is arranged or at a position different from the vicinity thereof, the efficiency of the work of arranging the mechanical control device can be improved. Become like

  In the present invention, the type and structure of the opening / closing body may be arbitrary. For example, the opening / closing body includes a main body of the opening / closing body and a closing side of the opening / closing body relative to the main body of the opening / closing body (in other words, a closing movement direction side). And an opening / closing sub-portion that is movable with respect to the opening / closing side of the closing body (in other words, the opening / closing movement direction) with respect to the opening / closing main body. Well, you don't have to.

  In the former case, when the mechanical opening / closing body stopping device has the above-described type and structure, the type and structure of the mechanical coupling device are, for example, a string-shaped member when the opening / closing movement of the opening / closing body is performed. And a lock member that operates when the opening / closing member sub-part contacts an obstacle and stops the rotation of the rotary member by this operation. Often, it is disposed on the opening / closing body and includes a pair of holding members such as a lever member for holding the string-shaped member when the opening / closing body sub-part contacts an obstacle. You may.

  In the present invention, the type and structure of the electric opening / closing body stopping device are arbitrary as long as the closing movement is electrically stopped when the opening / closing body contacts an obstacle during the closing movement. For example, as an example, a control device for executing at least on / off switching control (in other words, on / off electric control) of a brake device, and an obstacle that is activated by an opening / closing body contacting the obstacle One that includes a sensing switch and a signal line for connecting the obstacle sensing switch and the control device can be cited.

  Here, the obstacle detection switch may be a contact-type switch that operates by contacting an obstacle, or a non-contact switch that operates without contacting an obstacle.

  In the above-described example of the electric opening / closing body stopping device, when the obstacle detection switch is operated, the control device executes control to switch on the brake device which has been turned off, so that the control device may hit the obstacle. The closing movement of the contacting opening / closing body stops.

  In the above-described example of the electric opening / closing body stopping device, the obstacle detection switch and the control device are connected by a signal line, that is, wired. May be wirelessly connected.

  In the example of the electric opening / closing body stopping device described above, the obstacle detection switch may be provided on the opening / closing body or may be provided on an immovable member that is immobile. .

  In the former case, the signal line is wound around a take-up reel arranged on an upper side forming member (for example, a lintel member) forming the upper side of the opening that is opened and closed by the opening and closing body, and is fed out. It may or may not be present.

  In the former case, the first step includes a step of removing the obstacle detection switch from the opening / closing body, a step of removing the take-up reel from the upper side forming member, and a step of removing the signal line from the obstacle detection switch and the control device; May be included.

  In the former case, the second step is a step of replacing a portion of the opening / closing body where the obstacle detection switch is provided, and the second step is performed after this step. Arranging a mechanical coupling device in the part that has been set, may be included, without replacing the part of the opening and closing body where the obstacle detection switch was provided, in this part or in the vicinity thereof A step of arranging the mechanical coupling device may be included.

  In the present invention, a direction changing device for changing the direction of the cord-like member extending from the mechanical coupling device in the opening movement direction of the opening and closing body to a direction making an angle with the opening movement direction of the opening and closing body may be provided. You don't have to.

  In the former case, as described above, the signal line for connecting the obstacle detection switch of the electric opening / closing body stopping device and the control device is wound on the take-up reel arranged on the upper side forming member. In the case where the reel is fed, the second step may or may not include a step of arranging the direction changing device at or near the position where the take-up reel was arranged. .

  According to the former case, the efficiency of the operation of arranging the direction change device can be improved as compared with the case where the direction change device is arranged at a position different from or near the position where the take-up reel is arranged. Become like

  In the present invention, the string-shaped member may be constituted by one string-shaped member, or may be constituted by a plurality of string-shaped members.

  In the latter case, the string-shaped member is configured to include, for example, a first string-shaped member on the mechanical coupling device side and a second string-shaped member on the mechanical control device side, and The string-shaped member and the second string-shaped member may be connected via a connecting member.

  In the above invention, the switching device before the repair is a combined management and disaster prevention switching device, and the switching device after the repair may also be a combined management and disaster prevention switching device. The switchgear may be a switchgear dedicated to disaster prevention, and the repaired switchgear may be a switchgear combined with management and disaster prevention.

  In the present invention described above, the string member may be a wire, a string made of a synthetic resin, a chain such as a roller chain, or any string member.

  The string-shaped member may be exposed, for example, by arranging it along the surface of the opening / closing body, or at least one of the strings may be provided inside a guide member or the like for guiding the opening and closing movement of the opening / closing body. The portion may not be exposed to the outside.

  Further, in the present invention described above, the slide member of the mechanical control device may or may not include the delay device for delaying the switching timing for switching the brake device from on to off.

  According to the former case, the start of the closing movement can be delayed when the opening and closing body is to be closed again by removing the obstacle that has contacted the opening and closing body.

  The present invention can be applied to any opening / closing device in which any opening / closing body can be freely opened / closed.

  For example, if the switchgear before the renovation is the above-mentioned switchgear only for disaster prevention, an example of the switchgear only for disaster prevention has a shutter curtain as an opening and closing body, and the disaster prevention compartment is closed by the shutter curtain which is fully closed. It is a disaster prevention shutter device to be formed. The disaster-prevention shutter device includes a disaster-prevention shutter device for an elevating unit that closes the vicinity of an elevating unit such as an elevator with a fully closed shutter curtain.

  If the switchgear before repair is the switchgear combined with management and disaster prevention described above, the switchgear combined with management and disaster prevention has the function as the shutter device for disaster prevention described above, and the shutter curtain is operated by operating the operation device. A management and disaster prevention shutter device that also performs a function as a management shutter device that performs opening / closing movement, movement stop, and opening / closing of an opening or the like with the shutter curtain is included.

  Further, in the present invention, the opening / closing body may be, for example, a slat connecting body formed by connecting a plurality of slats in the opening / closing movement direction of the opening / closing body, and formed of a fire-resistant thin member. It may be composed of one or a plurality of sheets or a single panel, and may be composed of a plurality of panels connected in the direction of opening and closing movement of the opening and closing body. It may be a body or the like.

  Further, in the present invention, the opening / closing body may be one that is unreeled from the winding shaft and wound and opened and closed, or one that is unreeled from the winding shaft and slides open and closed without being wound. Good.

  In addition, at least one of the opening movement and the closing movement of the opening / closing body may be performed by a driving device using an electric motor or the like, or may be performed manually.

  Further, the closing movement of the downwardly facing opening / closing body may be performed by the own weight of the opening / closing body, or may be performed by adding the driving force of a driving device such as an electric motor to the own weight of the opening / closing body. Good.

  When the opening and closing body is a shutter curtain, the opening and closing movement of the shutter curtain is performed by winding and unwinding the shutter curtain by forward and reverse rotation of the winding shaft, and the downward closing movement of the shutter curtain is performed by the shutter. With respect to the disaster prevention shutter device that is performed by the curtain's own weight or by the driving force of the driving device in addition to the self-weight, the winding shaft is returned by a torsion coil spring or a mainspring spring in which a returning force is accumulated during the closing movement of the shutter curtain. A spring may be provided, and the upward movement of the shutter curtain may be performed using the return force accumulated in the return spring as an auxiliary force.

  In the present invention, the type and structure of the automatic closing device provided in the opening / closing device before the repair may be arbitrary, and an example of the automatic closing device is for the automatic closing device to switch the brake device on and off. A slide member that is slidable and urged by an urging means in a direction to turn off the brake device, one end is connected to the slide member, and the other end is immovable with respect to the opening / closing body via a temperature fuse. And a string-shaped member connected to the stationary member.

  In this example, when the slide member stops at the position where the brake device is turned on by the string-shaped member connected to the immovable member, the stopped state of the opening / closing body is maintained, and the heat generated by the fire causes the thermal fuse to blow. As a result, the string-like member is disengaged from the immovable member, and the slide member moves to a position at which the brake device is turned off by the urging means.

  ADVANTAGE OF THE INVENTION According to this invention, the effect of being able to reduce the cost for repairing a switchgear provided with an electric switchgear stop device to a switchgear provided with a mechanical switchgear stop device can be obtained.

FIG. 1 is a front view showing an entire management and disaster prevention combined shutter device serving as an opening / closing device before being repaired by a repair method according to an embodiment of the present invention. FIG. 2 is a sectional view showing the internal structure of the switchgear shown in FIG. FIG. 3 is a diagram showing the internal structure of the fire detecting device shown in FIG. FIG. 4 is a plan view of a base member on which a swing center axis of a lever member to which a control wire is connected is supported. FIG. 5 is a plan view of a lever member to which a control wire is connected. FIG. 6 is a sectional view taken along line S6-S6 of FIG. FIG. 7 is a plan view of the lever member when it is arranged inside the base member shown in FIG. 4 and is swingable about a swing center axis supported by the base member. FIG. 8 is a sectional view taken along line S8-S8 in FIG. FIG. 9 is an overall perspective view of the thermal fuse according to one embodiment of the present invention. FIG. 10 is a sectional view taken along line S10-S10 in FIG. FIG. 11 is a longitudinal sectional view showing a state where the thermal fuse shown in FIG. 9 is locked to the lever member. FIG. 12 is a diagram showing a case where the thermal fuse shown in FIG. 3 is blown by heat generated by a fire. FIG. 13 is a front view showing the entirety of the shutter device serving as the opening / closing device after being modified by the modification method according to the embodiment of the present invention. FIG. 14 is a sectional view taken along line S14-S14 of FIG. FIG. 15 is a sectional view showing the internal structure of the switchgear shown in FIGS. 13 and 14. FIG. 16 is a sectional view taken along line S16-S16 in FIG. FIG. 17 is a view similar to FIG. 16, showing a state where the shutter curtain during the closing movement comes into contact with an obstacle. FIG. 18 is a side sectional view showing the internal structure of the case shown in FIGS. 16 and 17. FIG. 19 is a front view showing the entire case shown in FIGS. 16 and 17. FIG. 20 is a front view showing the structure housed inside the case of FIG. FIG. 21 is a view similar to FIG. 20, illustrating a state where the shutter curtain during the closing movement comes into contact with an obstacle. FIG. 22 is a sectional view taken along line S22-S22 in FIG. FIG. 23 is a view as seen from the arrow S23 in FIG. FIG. 24 is a sectional view taken along line S24-S24 of FIG. FIG. 25 is an enlarged front view showing the lock member shown in FIGS. 20 and 21. FIG. 26 is a side sectional view showing the direction changing device shown in FIGS. 13 and 14. FIG. 27 is a plan view showing the internal structure of the multifunction device including the automatic closing device and the like shown in FIGS. FIG. 28 is a front view showing the internal structure of the multifunction device, and is a view as seen from the arrow S28 in FIG. FIG. 29 is a front view showing the internal structure of the multifunction peripheral in FIG. 27, and is a cross-sectional view taken along line S29-S29 in FIG. FIG. 30 is a plan view of the intermediate device of the intermediate device and the automatic closing device that constitute the multifunction device. FIG. 31 is a plan view of the automatic closing device among the intermediate device and the automatic closing device that constitute the multifunction device. FIGS. 32 (A) and (B) are plan views separately showing the intermediate device and the automatic closing device when the thermal fuse of the fire detecting device is melted by heat due to the fire as shown in FIG. is there. FIGS. 33A and 33B are plan views separately showing the intermediate device and the automatic closing device when the shutter curtain during the closing movement comes into contact with an obstacle.

  An embodiment for carrying out the present invention will be described below with reference to the drawings. An opening / closing device that is modified by the modification method according to an embodiment of the present invention (in other words, the present embodiment) (in other words, a switching device before the modification) has a shutter curtain that is freely movable in opening and closing. Shutter device.

  This shutter device is a shutter device that combines management and disaster prevention. That is, the shutter device before being repaired by the repair method according to the present embodiment has a function as a management shutter device in which a shutter curtain opens and closes to open and close an opening such as an entrance and a disaster prevention function such as smoke prevention. The shutter curtain having a function as a disaster prevention shutter device for forming a disaster prevention section in a structure such as a building by closing and moving when an abnormal situation such as a fire occurs.

  As will be described later, the opening / closing device modified by the modification method according to the present embodiment is also a management and disaster prevention combined shutter device in which the opening / closing body is a shutter curtain.

  FIG. 1 shows the entire shutter device before refurbishment. FIG. 1 shows the shutter device 1 in a semi-closed state in which the opening and closing movement direction is the up and down direction, and the shutter curtain 1 that moves downward and moves downward is closed to about half. Is shown. The opening that is opened and closed by the shutter curtain 1 is an entrance 2 formed in the building. The entrance 2 is connected to the left and right building frames 3 such as walls and the lower end of the shutter curtain 1 when fully closed. It is surrounded by a floor 4 and a ceiling member 5 which are mating members. Left and right guide rails 6 in which both left and right ends of the shutter curtain 1, in other words, both ends in the width direction of the shutter curtain 1 are slidably inserted are attached to the left and right building frames 3, respectively. Are guided by these guide rails 6, the shutter curtain 1 opens and closes vertically.

  A shutter case 8 is disposed in a space 7 above the ceiling that is separated from the entrance 2 by a ceiling member 5. The shutter case 8 is attached to a building frame 9 such as a falling wall existing in the space 7 above the ceiling. It is connected with a connecting tool such as a bolt. A take-up shaft 11 is horizontally housed and arranged inside the shutter case 8, and the take-up shaft 11 is rotatably supported by left and right side surfaces 8 </ b> A and 8 </ b> B of the shutter case 8. Therefore, the shutter case 8 is a winding shaft storage case. A switch 13 is connected to one end of the winding shaft 11 via a driving force transmitting means 12 composed of a sprocket wheel and a roller chain.

  FIG. 2 is a sectional view showing the internal structure of the switchgear 13. The rotational force of the drive shaft 14 shown in FIG. 2 of the switch 13 serving as a drive device for driving the take-up shaft 11 is generated by a drive sprocket wheel (not shown) attached to the drive shaft 14. A driven sprocket wheel (not shown) attached to one end of the take-up shaft 11 and an endless roller chain (not shown) bridged between the sprocket wheels through a driving force transmitting means 12 shown in FIG. It is transmitted to the take-up shaft 11.

  In this embodiment, as shown in FIG. 1, the switch 13 is attached to a bracket member 15 coupled to one of the left and right side surfaces 8A and 8B of the shutter case 8. Have been.

  Although not shown, the shutter curtain 1 is wound around the winding shaft 11, and the upper end of the shutter curtain 1 is connected to the outer peripheral surface of the winding shaft 11. Further, a portion of the shutter curtain 1 below the winding shaft 11 is hung down to a lower side of the ceiling member 5 through a slit provided in a lintel 16 arranged on the ceiling member 5. Both ends in the width direction are slidably inserted into the left and right guide rails 6 as described above. The lintel 16 is formed by two lintel members facing each other in the thickness direction of the shutter curtain 1 (the front-rear direction in FIG. 1), and the slit is formed between these lintel members.

  As shown in FIG. 2, the switch 13 has a DC or AC electric motor device 18 and a brake device 19 arranged side by side in the axial direction. The rotating shaft is fixedly arranged at the center of the rotating rotor 18A of the device 18. A disc-shaped first brake member 20 is connected to an end of the drive shaft 14 on the brake device 19 side. The brake device 19 is provided with a brake shaft 21 that is slidable in the axial direction by a predetermined distance, and the brake shaft 21 is coupled to a first brake member 20 and a second brake member 22 that faces in the axial direction. Have been. Normally, the brake shaft 21 and the second brake member 22 are pressed toward the electric motor device 18 by the spring 23, so that the brake device 19 is pressed by the first brake member 20 and the second brake member 22. It is on. Therefore, the drive shaft 14 of the electric motor device 18 at this time does not rotate due to the braking force of the brake device 19.

  On the other hand, when electricity is supplied to the solenoid 24 disposed in the brake device 19, the brake shaft 21 and the second brake member 22 slide away from the electric motor device 18 against the spring 23 due to the magnetic force of the solenoid 24. I do. Therefore, the pressure contact between the first brake member 20 and the second brake member 22 is released, and the brake device 19 is turned off. Therefore, at this time, the drive shaft 14 of the electric motor device 18 can be rotated by energizing the coil 25.

  In one of the left and right building frames 3 shown in FIG. 1, one of the building frames 3 has the shutter curtain 1 moved upwardly with respect to the entrance 2, moved downwardly closed, and stopped. The operation device 30 for performing the operation is mounted. The operation device 30 is provided with an “open” button, a “close” button, and a “stop” button.

  The shutter curtain 1 occupies most of the area of the shutter curtain 1, and has a curtain main body 1A having an upper end coupled to the winding shaft 11, and a seat plate 1B provided at a lower end of the curtain main body 1A. It has what has. The curtain main body 1A of the present embodiment is formed by vertically connecting a large number of slats. And the curtain main body 1A is the opening / closing body main body in the present embodiment, and the seat plate 1B is the end member in the present embodiment.

  Although not shown, the seat plate 1B of the present embodiment has a fixed portion fixed to the lower portion of the curtain body 1A, and is disposed below the fixed portion, and opens and closes the shutter curtain 1 with respect to the fixed portion. And a movable part that is movable in the vertical direction, which is the direction of movement.

  Although not shown, the shutter curtain 1 of the present embodiment has a curtain main portion and a curtain sub-portion, and the curtain main portion is formed by the curtain main body 1A and the above-described fixing portion of the seat plate 1B. The sub-curtain portion is constituted by the above-described movable portion of the seat plate 1B. Therefore, the curtain sub-portion is disposed at the end on the closing side of the shutter curtain 1 with respect to the curtain main portion. And the curtain main part is the opening / closing body main part in this embodiment, and the curtain sub part is the opening / closing body sub part in this embodiment.

  As shown in FIG. 1, in the present embodiment, the fixing portion of the seat plate 1 </ b> B of the shutter curtain 1 is closed in an emergency such as when a fire occurs or during normal times (in other words, in normal times). An obstacle detection switch 35 that operates when the moving shutter curtain 1 comes into contact with the obstacle 34 is arranged. For example, in the obstacle detection switch 35 including a push button type micro switch, the movable portion of the seat plate 1B comes into contact with the obstacle 34 and the shutter curtain 1 closes (in other words, the closing movement direction). By moving to the upper side, the push button of the microswitch on the fixed portion of the seat plate 1B is pushed by the movable portion of the seat plate 1B to operate.

  Further, in the present embodiment, as shown in FIG. 1, a control device 26 such as an electric circuit such as a relay circuit or a computer is attached to the switch 13 serving as a driving device. The control device 26 performs an electric drive control of the electric motor device 18 of the switchgear 13 shown in FIG. 2 and an electric on / off switching control of the brake device 19 shown in FIG.

  When the shutter curtain 1 in which the seat plate 1B has reached the height position of the lintel 16 arranged on the above-described ceiling member 5 is fully opened, or when the seat plate 1B has the lintel 16 and the floor 4 as shown in FIG. When the "close" button is operated in the half-closed state (half-opened state) of the shutter curtain 1 which has reached the middle position between the control device and the control device which receives the control signal (close signal) from the "close" button Since the solenoid 24 of the brake device 19 is energized by 26, the brake device 19 is turned off. As a result, the shutter curtain 1 is unwound from the winding shaft 11 by rotating the take-up shaft 11 and the drive shaft 14 forward by the own weight of the shutter curtain 1, whereby the shutter curtain 1 that has been closed and moved to the fully closed position. When it reaches, the control device 26 that receives a control signal (fully closed signal) from a sensor (not shown) (for example, a fully closed limit switch or the like) that detects the fully closed position cuts off the power supply to the solenoid 24, and the brake device 19 is turned on by a spring 23.

  In addition, when the shutter curtain 1 is fully closed, or when the seat plate 1B reaches a halfway position between the lintel 16 and the floor 4 as shown in FIG. When the "open" button is operated in the (half-closed state), the solenoid 24 of the brake device 19 is energized by the control device 26 which has received the control signal (open signal) from the "open" button. 19 is turned off, and the control device 26 energizes the coil 25 of the electric motor device 18. Therefore, the drive shaft 14 rotates in the reverse direction, and this rotation is transmitted to the winding shaft 11 via the above-described driving force transmitting means 12, and the reverse rotation of the winding shaft 11 causes the shutter curtain 1 to rotate on the winding shaft 11. It rolls up and moves open. When the shutter curtain 1 reaches the fully open position, the control device 26 that has received a control signal from a sensor (not shown) (for example, a fully open limit switch or the like) that detects the fully open position interrupts the energization of the solenoid 24 and the brake device. 19 is returned to the ON state by the spring 23, and the power supply to the coil 25 is cut off by the control device 26.

  When the "stop" button is operated while the shutter curtain 1 is moving closed, the power supply to the solenoid 24 is cut off by the control device 26 which receives the control signal (stop signal) from the "stop" button. Therefore, when the brake device 19 is turned on by the spring 23, the shutter curtain 1 stops at that position. Further, when the "stop" button is operated while the shutter curtain 1 is opening and moving, the power supply to the solenoid 24 is cut off by the control device 26 which has received the control signal from the "stop" button. The device 19 is turned back on by the spring 23, and the control device 26 cuts off the current to the coil 25 of the electric motor device 18, whereby the shutter curtain 1 stops at that position.

  As can be understood from the above description, the floor 4, the guide rail 6, the shutter case 8, the lintel 16 and the like are not moved with respect to the shutter curtain 1 that opens and closes. The guide rail 6, the shutter case 8, the lintel 16 and the like are immovable members that are immovable with respect to the shutter curtain 1. The lintel 16 is an upper side forming member forming the upper side of the entrance 2.

  The winding shaft 11 that rotates in the forward and reverse directions as described above is provided with a return spring such as a torsion coil spring or a spring that accumulates a return force during the closing movement of the shutter curtain 1. The opening movement may be performed using the return force accumulated in the return spring as an auxiliary force.

  Further, as shown in FIG. 2, a lever member 31 is disposed at an end of the brake shaft 21 opposite to the electric motor device 18 side. The lever member 31 penetrates the brake shaft 21 and includes a first portion 31A and a second portion 31B that are separated by the brake shaft 21 as a boundary. A first bent portion 31C is formed in the first portion 31A, and a second bent portion 31D is formed in the second portion 31B. When a load is applied to the first portion 31A in the direction of arrow A, that is, in the direction opposite to the electric motor device 18 side, the first portion 31A swings in the direction of arrow A with the second bent portion 31D as a fulcrum. The brake shaft 21 and the second brake member 22 slide in the direction of arrow A ′, which is the same direction as the direction of arrow A. Therefore, the brake device 19 can be turned off without energizing the solenoid 24.

  For this reason, the brake device 19 is also a mechanical brake device that is turned on and off by the action of the load in the direction of arrow A on the first portion 31A and the spring 23 when the load is released. .

  In addition, it is possible to apply a load in the direction of arrow A to the first portion 31A by an automatic closing device 32 described later attached to the switchgear 13.

  Also, when a load in the same direction as the arrow A direction is applied to the second portion 31B, the second portion 31B swings in the same direction as the arrow A direction with the first bent portion 31C as a fulcrum. The brake shaft 21 and the second brake member 22 slide in the direction of arrow A '. Therefore, the brake device 19 can be turned off without energizing the solenoid 24 at this time as well.

  Applying a load in the same direction as the arrow A direction to the second portion 31B in this manner can be performed manually. For this reason, the switchgear 13 according to this embodiment can turn off the brake device 19 also by a manual operation. If it is not necessary to manually turn off the brake device 19, the second portion 31B may be omitted, leaving the second bent portion 31D.

  In this way, the brake device 19 is a device for stopping and moving the shutter curtain 1 by turning on and off.

  In the present embodiment, as shown in FIG. 1, the control device 26 and the above-described obstacle detection switch 35 are connected by a signal line 36 and a signal line 89, and the signal line 36 is connected to the shutter curtain 1 By the opening and closing movement of the reel, the reel is unwound from the take-up reel 37 disposed on the lintel 16 and is wound. The signal line 89 extending from the take-up reel 37 is connected to the control device 26.

  As described above, in a normal time when a fire does not occur (in other words, in a normal state), when the obstacle detecting switch 35 is actuated by the shutter curtain 1 being closed and moving coming into contact with the obstacle, the obstacle detection is performed. From the switch 35, a control signal (obstacle sensing signal) indicating that the shutter curtain 1 has contacted an obstacle is output (in other words, transmitted) to the control device 26 via the signal line 36 and the signal line 89. You. The control device 26 to which the control signal is input (in other words, received) controls the opening / closing device 13 for stopping the closing movement of the shutter curtain 1 abutting on the obstacle 34 (to the coil 25 of the electric motor device 18). Of the brake device 19 and the power supply to the solenoid 24 of the brake device 19). Further, after that, the control device 26 may execute the control of the switch 13 for reversing and raising the shutter curtain 1 (opening movement for a predetermined time or a predetermined distance).

  Thereafter, when the obstacle detection signal from the obstacle detection switch 35 is not input to the control device 26, that is, when the obstacle 34 that has been in contact with the shutter curtain 1 is removed, the control device 26 Then, control of the opening / closing device 13 for starting the closing movement of the shutter curtain 1 again (power supply to the solenoid 24 of the brake device 19 and power supply to the coil 25 of the electric motor device 18) is executed.

  FIG. 3 is a diagram showing an internal structure of a fire detecting device 39 for detecting a fire occurrence according to an embodiment of the present invention. As can be seen from FIG. 3, the fire detecting device 39 according to the present embodiment has a temperature fuse 40, and the specific structure of the fire detecting device 39 will be described later with reference to FIGS. Are attached to the lintel 16 as shown in FIG.

  The above-mentioned automatic closing device 32 shown in FIG. 2 automatically turns on the above-described switchgear 13 when a fire is detected by the fire detecting device 39 shown in FIGS. 1 and 3. By controlling, the shutter curtain 1 which has reached the fully open position is automatically closed and moved to be fully closed, and the doorway 2 in FIG. 1 is closed by the shutter curtain 1 having smoke prevention and / or fire prevention. It is for doing. That is, the automatic closing device 32 is for turning off the brake device 19 of the switchgear 13 that has been on, based on the operation of the fire detecting device 39, and for starting the closing movement of the shutter curtain 1. The automatic closing device 32 is attached to the switchgear 13 by a bracket (not shown) provided on a machine frame of the automatic closing device 32.

  As can be seen from FIGS. 1 and 3, a control wire for indirectly controlling the automatic closing device 32 (directly transmitting a fire occurrence to the control device 26) from the fire detecting device 39. The control wire 81 is connected to an actuator which is an operating member (not shown) of the micro switch 38 shown in FIG. Is connected to the control device 26 by a signal line 80.

  In addition, the control wire 81 which is a flexible cord-like member and is also an elongated member is slidably inserted into the inside of the flexible outer cable 82. For this reason, the control wire 81 is protected by the outer cable 82.

  Although not shown in FIG. 2, the machine frame of the automatic closing device 32 is provided with two rising portions facing each other (in FIG. 2, facing in the left-right direction), and formed at these rising portions. A plate-like slide member 83 shown in FIG. 2 having a length (length in the left-right direction in FIG. 2) straddling the two rising portions is slidably inserted into the formed hole. . Although not shown in FIG. 2, an electric motor driven and controlled by the control device 26 is disposed inside the automatic closing device 32, and a pinion gear is attached to a drive shaft of the electric motor. The slide member 83 has a plurality of teeth that can mesh with the teeth of the pinion gear in the longitudinal direction of the slide member 83 (in the left-right direction in FIG. 2). For this reason, the slide member 83 is slidable in the longitudinal direction of the slide member 83 by a pinion gear that rotates forward and reverse by the driving force of the electric motor. The electric motor of the automatic closing device 32 is connected to the control device 26 via a signal line 84 shown in FIG.

  In the present embodiment, the forward rotation of the pinion gear causes the slide member 83 to slide in the direction of moving the first portion 31A of the lever member 31 in the direction of arrow A (leftward in FIG. 2), and the reverse rotation of the pinion gear causes the rotation. The slide member 83 slides in a direction in which the slide member 83 is moved in a direction opposite to the direction of the arrow A (rightward in FIG. 2). That is, in the present embodiment, the forward rotation of the pinion gear causes the slide member 83 to slide in the direction of turning off the brake device 19 that has been on (left direction in FIG. 2), and the reverse rotation of the pinion gear causes the slide member 83 to rotate. Reference numeral 83 slides in a direction for turning on the brake device 19 which has been off (to the left in FIG. 2).

  For this reason, the slide member 83 is a switching member for switching the brake device 19 on and off.

  As shown in FIG. 2, an operating member 85 is attached to a bent portion 83 </ b> A which is bent downward at a front end of the slide member 83, and a first portion 31 </ b> A of the lever member 31 is attached to the bent portion 83 </ b> A. , An actuated member 86 is vertically connected. When the slide member 83 moves forward (slids to the left in FIG. 2) by the forward rotation of the pinion gear attached to the drive shaft of the electric motor, the operating member 85 comes into contact with the operated member 86. A load is applied to the first portion 31A of the lever member 31 in the direction of arrow A shown in FIG. In the present embodiment, since the operating member 85 is the head 87A of the bolt 87, the head 87A is rotated to advance and retreat the bolt 87 with respect to the bent portion 83A of the slide member 83, whereby the operation is performed. The distance between the member 85 and the operated member 86 can be adjusted to an appropriate size. After performing this adjustment, the position of the operating member 85 with respect to the operated member 86 is adjusted by rotating the lock nut 88 screwed to the bolt 87 and pressing the lock nut 88 against the bent portion 83A. , It can be fixed at an appropriate position.

  In a normal time when no fire occurs, the other end (the other end) 81B of the control wire 81 whose one end (one end) (not shown) is connected to the aforementioned actuator of the microswitch 38 is shown in FIG. 3, the actuator is connected to the immovable member via the thermal fuse 40, while the actuator of the micro switch 38 is pulled by the control wire 81, and thus, The switch 38 is kept off.

  Although not shown, a microswitch is disposed inside the automatic closing device 32, and the microswitch is provided with an operating member that is biased in a direction protruding from the microswitch by a spring. I have. Although not shown, a dog member is attached to the slide member 83 at a portion on the control wire 81 side, and the operating member of the micro switch is in contact with the dog member.

  As shown in FIG. 3, a portion of the control wire 81 on the other end 81B side is a rising portion of a support member 50 attached to an upper surface 16C of a lintel member 16A forming the lintel 16. While being guided by the guide member 53 arranged in the 52, it is inserted through a hole 52 </ b> A formed in the rising portion 52. A portion of the control wire 81 on the other end portion 81B side is disposed above the lintel member 16A and is rotatable around a rotation shaft 55. After being wrapped around a second roller 57 which is arranged below the member 16A and is rotatable about a rotation shaft 58, it is arranged below the lintel member 16A and swings. The other end 81 </ b> B of the control wire 81 is connected to a lever member 66 which is a swing member which is swingable about a shaft member 65 which is a moving center shaft. The other end 81 </ b> B of the control wire 81 wrapped around the first roller 54 has a hole 56 </ b> A formed at the bottom of the support bracket 56 of the first roller 54 and the support member 50. After being inserted into the hole 51A formed in the bottom portion 51 and the hole 16E formed in the lintel member 16A, it is looped around the second roller 57.

  In the present embodiment, the lever member 66 to which the other end 81B of the control wire 81 is connected becomes a stationary member via the thermal fuse 40 disposed near the lower surface 16D of the lintel member 16A. It is attached to the lower surface 16D of the lintel member 16A and is connected (in other words, locked) to a case member 59 for accommodating the lever member 66. Therefore, the other end 81B of the control wire 81 is connected to the lintel member 16A via the thermal fuse 40 and the case member 59.

  Next, a connection structure between the other end portion 81B of the control wire 81 and the lintel member 16A will be described in detail.

  As described above, the lever member 66 to which the other end 81B of the control wire 81 is connected is swingable about the shaft member 65 that is the swing center axis. As shown in FIG. 3, the case member 59 is supported by a base member 61 attached to a bottom portion 60 of the case member 59. For this reason, the base member 61 is an immovable member that is immovable with respect to the shutter curtain 1 like the lintel member 16A and the case member 59.

  FIG. 4 is a plan view of the base member 61. As shown in FIG. 4, the base member 61 includes a bottom portion 62 and a rising portion that rises from both ends of the bottom portion 62 in a width direction that is a direction orthogonal to a longitudinal direction that is a longitudinal direction of the base member 61. It has a substantially channel shape having 63 and 64. Opposite round holes 63A, 64A are formed in the respective rising portions 63, 64, and the shaft member 65 serving as the swing center axis of the lever member 66 is inserted into these round holes 63A, 64A. The shaft member 65 is provided between the rising portions 63 and 64 of the base member 61.

  FIG. 5 is a plan view of the lever member 66, and FIG. 6 is a sectional view taken along line S6-S6 of FIG.

  As can be seen from FIGS. 5 and 6, the lever member 66 is formed by bending a plate material, and has both an upper surface portion 67 and both ends in a width direction which is a direction orthogonal to a length direction which is a longitudinal direction of the upper surface portion. Side portions 68 and 69 extending downward from the portion, respectively, and a rear end portion is a curl portion 70 that is bent inward and rounded. As shown in FIG. 6, the upper surface portion 67 of the lever member 66 has a first inclined portion 71 inclined upward from a rear end portion to a longitudinal central portion, and a first inclined portion 71 inclined downward from the central portion. It comprises two inclined portions 72 and a horizontal portion 73 extending horizontally from the second inclined portion 72. The first inclined portion 71 is formed with two round holes 71A and 71B, and the other end 81B of the control wire 81 is connected (locked) to the round holes 71A and 71B. It has become. In the horizontal portion 73, a long hole 73A having a length in the longitudinal direction is formed. At the center of the long side 73A of the long hole 73A in the long side direction in the peripheral portion 73C of the long hole 73A, a concave portion 73B is formed across the long hole 73A in a direction orthogonal to the long side direction.

  FIG. 7 is a diagram showing a state where the lever member 66 shown in FIGS. 5 and 6 is attached to the base member 61 shown in FIG. In FIG. 7, the illustration of the bottom 60 of the case member 59 to which the base member 61 is attached is omitted.

  As shown in FIG. 7, the width dimension of the lever member 66 is smaller than the interval between the two rising portions 63 and 64 forming the side surface of the base member 61. It is arranged between the two rising portions 63 and 64 of the base member 61. As described above, the rear end of the lever member 66 is the curl portion 70, and the holes formed in the curl portion 70 and the round holes 63A, 64A formed in the rising portions 63, 64 of the base member 61. When the shaft member 65 is inserted and fixed, the lever member 66 can swing about the shaft member 65.

  At the position corresponding to the long hole 73A of the lever member 66 in the horizontal posture shown in FIG. 6 attached to the base member 61 at the bottom 62 of the base member 61, the figure has substantially the same shape and size as the long hole 73A. 4 and FIG. 7 are formed. In other words, at the position corresponding to the long hole 62A of the bottom 62 of the base member 61 in the lever member 66 attached to the base member 61 and in the horizontal posture shown in FIG. An elongated hole 73A having dimensions is formed.

  In addition, as shown in FIG. 3 and FIG. 8 which is a cross-sectional view taken along line S8-S8 in FIG. 7, the length of the bottom 62 of the base member 61 in the bottom 60 of the case member 59 to which the base member 61 is attached. At a position corresponding to the hole 62A, a long hole 60A having substantially the same shape and size as the long hole 62A is formed.

  The long hole 62A of the bottom 60 of the case member 59, the long hole 62A of the bottom 62 of the base member 61, and the long hole 73A of the upper surface 67 of the lever member 66 have the structure of the thermal fuse 40 whose specific structure will be described later. Part is inserted.

  As described above, in the present embodiment, the long hole 60A of the bottom 60 of the case member 59 and the long hole 62A of the bottom 62 of the base member 61 are the first long holes, and the long hole 73A of the lever member 66 is the first long hole. It is a second slot.

  FIG. 9 is a perspective view of the thermal fuse 40 according to one embodiment of the present invention, and FIG. 10 is a sectional view taken along line S10-S10 in FIG. As can be seen from FIGS. 9 and 10, the thermal fuse 40 includes two members, a first member 41 and a second member 44.

  As shown in FIG. 9, the first member 41 formed of a plate material has a substantially T-shape having a wide head portion 42 and a narrow trunk portion 43. I have. On the other hand, the second member 44 formed by bending the plate material has a substantially U-shaped cross section, and the width dimension of each side surface portion 45, 46 (the vertical direction which is the longitudinal direction of the first member 41). Is larger than the maximum width L5 of the head 42 of the first member 41. Further, convex portions 45A, 46A protruding inward in the facing direction of the side surfaces 45, 46 are formed on the two side surfaces 45, 46 facing each other.

  Then, as shown in FIG. 10, a lower half of the body portion 43 of the first member 41 is inserted into a gap 48 between the convex portions 45A and 46A of the second member 44 facing each other, and a melting member that melts with high heat. Is between the convex portion 45A of the second member 44 and the trunk portion 43 of the first member 41, and between the convex portion 46A of the second member 44 and the trunk portion 43 of the first member 41. By arranging them, the first member 41 is welded to the second member 44. As a result, the thermal fuse 40 composed of the first member 41 and the second member 44 is formed. As shown in FIG. 11, the bottom 47 of the second member 44 is provided with an opening 47A formed by forming a hole in the bottom 47 and extruding the periphery of the hole upward. ing.

  FIG. 11 is a vertical sectional view of the thermal fuse 40 (including the case member 59, the base member 61, and the lever member 66) shown in FIG. In this embodiment, in a normal state where no fire occurs, the bottom portion 42A of the head portion 42 of the first member 41 is connected to the upper surface portion of the lever member 66, as can be seen from FIGS. The upper surface 45B, 46B (see also FIG. 9) of the side surface portions 45, 46, which is the upper part of the second member 44, is engaged with the case member 59. Abuts against the lower surface 60B of the bottom portion 60 of the base.

  In the present embodiment, the mounting operation of the thermal fuse 40 is performed by mounting the base member 61 on which the lever member 66 is swingably mounted to the bottom 60 of the case member 59, and then connecting the case member 59 to the lower surface of the lintel member 16A. 16D, and the part of the control wire 81 on the other end 81B side is wrapped around the first roller 54 and the second roller 57, and then the other end 111B of the control wire 81 is levered. It can be performed after the operation of connecting the two circular holes 71A and 71B of the member 66 is completed. That is, the work of attaching the thermal fuse 40 can be performed last.

  The maximum width dimension L5 of the head 42 of the thermal fuse 40 shown in FIG. 9 is smaller than the dimension (long side dimension) L3 in the long side direction of the long hole 73A of the lever member 66 shown in FIG. At the same time, it is larger than the dimension in the short side direction (short side dimension) L4. The maximum width dimension L5 of the head 42 of the thermal fuse 40 is the same as or substantially the same as the length of the long hole 73A of the lever member 66. The long side of the long hole 62A of the bottom 62 of the base member 61 shown in FIG. It is smaller than the dimension L1 and larger than the short side dimension L2. Further, although not shown, the maximum width dimension L5 of the head 42 of the thermal fuse 40 is the same as or substantially the same as the length 73A of the long hole 73A of the lever member 66. It is smaller than the long side dimension and larger than the short side dimension. The center positions of these three long holes 60A, 62A, 73A coincide or substantially coincide.

  For this reason, the head 42 of the thermal fuse 40 can be inserted into the three long holes 60A, 62A, 73A from below the long hole 62A of the bottom 60 of the case member 59. Then, by rotating the thermal fuse 40 in which the head 42 is inserted through these three long holes 60A, 62A, 73A by 90 degrees or approximately 90 degrees, the head 42 is rotated by the peripheral portion of the long hole 73A of the lever member 66. 73C.

  In the present embodiment, as shown in FIG. 3, the bottom portion 42A of the head portion 42 of the first member 41 of the thermal fuse 40 is engaged with the peripheral portion of the long hole 73A of the horizontal portion 73 of the lever member 66, and The operation of bringing the upper end surfaces 45B and 46B of the side surfaces 45 and 46 of the second member 44 of the fuse 40 into contact with the lower surface 60B of the bottom 60 of the case member 59 is performed as follows.

  First, as shown by a two-dot chain line in FIG. 7, the direction of the head 42 of the thermal fuse 40 is such that the width direction (the direction orthogonal to the thickness direction) of the head 42 is the bottom 60 of the case member 59. It is set to be the same or substantially the same (parallel or substantially parallel) as the long side direction of the long hole 60A. Thereafter, the head 42 of the thermal fuse 40 is placed on the bottom 60 of the case member 59, the long hole 62A of the bottom 62 of the base member 61, and the long hole 73A of the horizontal portion 73 of the lever member 66 in this order. From the beginning. Then, when the entire head 42 (in other words, the bottom 42A of the head 42) passes through the upper surface 67 of the lever member 66, the thermal fuse 40 is rotated by 90 degrees or approximately 90 degrees (rotation direction (clockwise, left Is optional).

  As described above, one end (not shown) of the control wire 81 is connected to the actuator (not shown) of the microswitch 38 shown in FIG. 1 so that a tension acts on the control wire 81. As a result, the lever member 66 is in an attitude of swinging upward due to the tension (in other words, the pulling force) of the control wire 81, so that the head 42 of the temperature fuse 40 is attached to the bottom 60 of the case member 59. When inserted from below in the order of the long hole 60A, the long hole 62A of the bottom 62 of the base member 61, and the long hole 73A of the horizontal portion 73 of the lever member 66, the lever member 66 is positioned as shown in FIG. The lever member 66 is pushed down by hand to swing downward.

  Then, the head 42 of the thermal fuse 40 is inserted into the elongated hole 62A of the bottom 60 of the case member 59, the elongated hole 62A of the bottom 62 of the base member 61, and the elongated hole 73A of the horizontal portion 73 of the lever member 66, and The bottom 42A of the head 42 of the 40 is locked to the peripheral portion of the long hole 73A of the horizontal portion 73 of the lever member 66, and the upper end surfaces 45B and 46B of the side portions 45 and 46 of the thermal fuse 40 are connected to the case member 59 The hand is released from the thermal fuse 40 at the time of contact with the lower surface 60B of the bottom portion 60.

As a result, the head 42 of the thermal fuse 40 is in a state where the head 42 is pulled upward by the lever member 66 (in other words, in a state where it is pushed up), and as shown in FIG. 3 and FIG. Of the thermal fuse 40 is fixed to the lower surface of the bottom portion 60 of the case member 59, while the bottom portion 42A of the case member 59 is engaged with the peripheral portion of the long hole 73A of the horizontal portion 73 of the lever member 66. 60B.
At this time, the portion where the bottom 42A of the head 42 of the temperature fuse 40 rotated by 90 degrees or substantially 90 degrees in the peripheral portion 73C of the long hole 73A of the lever member 66 in the horizontal posture is locked. As can be seen from FIGS. 5 and 6, the recess 73B is formed. That is, as described above, the direction orthogonal to the long side direction is located near the center of the long side direction of the long hole 73A (longitudinal direction of the lever member 66) in the peripheral portion 73C of the long hole 73A of the lever member 66. Is formed so as to extend over the elongated hole 73A.

  Accordingly, the bottom portion 42A of the head portion 42 of the thermal fuse 40 is more securely locked at the peripheral portion 73C of the long hole 73A of the lever member 66. 7 slides around the periphery of the long hole 73A (ie, the state shown by the two-dot chain line in FIG. 7), and the head 42 of the thermal fuse 40 is attached to the long hole 73A of the upper surface 67 of the lever member 66. The case 62 is prevented from dropping from the long hole 62A of the bottom 62 of the base member 61 and the long hole 60A of the bottom 60 of the case member 59.

  As described above, one end (not shown) of the control wire 81 is connected to the actuator (not shown) of the microswitch 38 shown in FIG. 1 so that a tension acts on the control wire 81. As described above, the bottom portion 42A of the head portion 42 of the thermal fuse 40 is engaged with the peripheral portion 73C of the elongated hole 73A of the horizontal portion 73 of the lever member 66, and the upper end surfaces 45B and 45B of the side portions 45 and 46 of the thermal fuse 40. 46B is in contact with the lower surface 60B of the bottom 60 of the case member 59, so that the microswitch 38 is kept off.

  As a result, the brake device 19 is maintained in the ON state, and the movement of the shutter curtain 1 reaching the fully open position is maintained. That is, the fully opened state of the shutter curtain 1 in normal times is maintained.

  Although not shown, the actuator of the microswitch 38 according to the present embodiment described above is a hinge lever that is rotatable around a hinge with respect to the main body of the microswitch 38. One end of a coil spring, which is an elastic member, is locked to a portion of the hinge lever on the main body side, and the other end of the coil spring is locked to a hinge lever side portion of the main body. When the fire detection device 39 is in the normal state shown in FIG. 3, in other words, in the normal state where no fire has occurred, the hinge lever of the micro switch 38 has the other end connected to this hinge lever. Due to the tension acting on the connected control wire 81, the micro switch 38 is maintained in a state of turning in a direction away from the main body. Thus, the micro switch 38 is kept off. At this time, a return spring force is accumulated in the coil spring disposed between the lever member and the main body.

  In a building in which the shutter device according to the present embodiment is installed, a fire occurs when the shutter curtain 1 is fully opened, and when the flame or the heat of the flame rises to the lintel 16 due to the fire, the lintel The heat of the flame is also conducted to the thermal fuse 40 shown in FIGS. 11 and 12 disposed on the 16 lintel member 16A.

  As described above, as shown in FIGS. 11 and 12, the bottom 47 of the second member 44 of the thermal fuse 40 is provided with an opening 47A through which heat generated by a fire is passed. The flame or heat of the flame due to the fire easily passes through the opening 47A and is conducted to the solder 49 welding the first member 41 and the second member 44.

  When the temperature of the heat conducted to the solder 49 becomes equal to or higher than a predetermined value, the solder 49 is melted. As a result, as shown in FIG. 44. As a result, the lever member 66 swings in the direction of the arrow A, which is upward, and the tension acting on the control wire 81 due to the one end being connected to the actuator of the microswitch 38 disappears. Will be.

  The hinge lever of the micro switch 38 is rotated toward the main body by the return spring force accumulated in the above-described coil spring disposed between the hinge lever and the main body. Goes from off to on.

  As a result, a fire detection signal (in other words, a control signal indicating that a fire has occurred) from the micro switch 38 is transmitted to the control device 26 connected to the micro switch 38 via the signal line 80 (in other words, output). Is done.

  The control device 26 that has received (in other words, input) the fire detection signal executes the control for normally driving the electric motor (not shown) of the automatic closing device 32 described above. As a result, the pinion gear attached to the drive shaft of the motor rotates forward, so that the slide member 83, which is a rack member having a plurality of teeth that can mesh with the teeth of the pinion gear, moves forward. (In FIG. 2, it advances to the left (slides).)

  When the slide member 83 moves forward, the operating member of the microswitch (not shown) arranged inside the above-mentioned automatic closing device 32 comes off the position of the above-mentioned dog member (not shown) attached to the slide member 83. The signal from the microswitch is transmitted to an external disaster prevention system (not shown) by the operation member of the microswitch projecting and moving by the urging force of the spring. As a result, when the fire occurs, the automatic closing device 32 is activated, and the outside that the shutter curtain 1 starts closing and moving is notified.

  When the slide member 83 of the automatic closing device 32 moves forward as described above, the operating member 85 provided at the front end of the slide member 83 is moved through the operated member 86 shown in FIG. As described above, the first portion 31A of the lever member 31 swings in the direction of arrow A with the second bent portion 31D of the lever member 31 as a fulcrum. By doing so, the brake shaft 21 and the second brake member 22 of the brake device 19 of the switchgear 13 slide in the direction of the arrow A ′, which is the same direction as the direction of the arrow A. The device 19 is turned off. For this reason, the shutter curtain 1, which has been fully opened, moves downwardly while rotating the above-described winding shaft 11 due to the weight of the seat plate 1B and the like below the winding shaft 11. The above-described drive shaft 14 of the opening / closing device 13 is also freely rotated via the drive force transmitting means 12, and the shutter curtain 1 is fully closed, thereby forming a disaster prevention section by the shutter curtain 1.

  As described above, when the slide member 83 moves forward, the operating member 85 provided at the front end of the slide member 83 is connected to the lever member of the switchgear 13 via the operated member 86 shown in FIG. The process is performed until the first portion 31A of the base 31 is pressed in the direction of arrow A in FIG. Specifically, when the control device 26 determines by a counter (not shown) that the drive shaft of the electric motor of the automatic closing device 32 has rotated forward a predetermined number of times, or that the slide member 83 of the automatic closing device has advanced a predetermined distance. Then, the execution of the control for driving the electric motor in the forward direction is stopped, whereby the forward movement of the slide member 83 is stopped. The control device 26 stops the execution of the control for normally driving the electric motor when a micro switch (not shown) arranged inside the automatic closing device 32 described above is operated (in other words, turned on). You may do so.

  As described above, in the present embodiment, the automatic closing device 32 is a switching member for switching the brake device 19 on and off, and is slidable in the direction of turning the brake device 19 on and off. It includes a member 83 and an electric motor for sliding the slide member 83. The slide member 83 moves forward by the drive control of the electric motor by the control device 26 based on the operation of the fire detection device 39. By doing so, the brake device 19 that has been turned on is turned off, whereby the shutter curtain 1 that has been stopped at the fully open position starts closing and moving.

  In the present embodiment, the fire detecting device 39 includes a thermal fuse 40, a microswitch 38, and one end (not shown) connected to the actuator of the microswitch 38, and the other end 81B connected through the thermal fuse 40. The control wire 81 is connected to the lintel member 16A, which is an immovable member that is immovable with respect to the shutter curtain 1, and is under tension. By maintaining the state in which the tension acts on 81, the stopped state at the fully opened position of the shutter curtain 1 is maintained, and when a fire occurs, the temperature fuse 40 is blown to act on the control wire 81. When the applied tension disappears, the micro switch 38 is actuated, whereby the control device 26 activates the automatic closing device 32. The slide member 83 in the drive control of the movement motor, by sliding to a position to turn off the brake device 19, which is assumed to start moving the shutter curtain 1 stopped at the fully open position has been held closed.

  As described above, when the solder 49 of the thermal fuse 40 is melted by the heat of the flame caused by the fire, the slide member 83 moves forward, and the shutter curtain 1 closes and moves downward from the fully open position. When the obstacle 34 shown in FIG. 1 exists below the shutter curtain 1 which is the direction, the shutter 34 is disposed at the front end on the closing side of the shutter curtain 1 during the closing movement of the shutter curtain 1. In other words, the above-mentioned movable portion forming the lower portion of the seat plate 1B of the shutter curtain 1 abuts on the obstacle 34, and the descent of this movable portion stops.

  Even if the lowering of the movable part is stopped, the above-mentioned curtain main part composed of the curtain main body 1A and the above-mentioned fixed part of the seat plate 1B descends. As the curtain sub-part formed by the part rises relatively to the curtain main part, the obstacle detection switch disposed on the fixed part of the seat plate 1B constituting the above-mentioned curtain main part is raised by this rise. The push button of the micro switch constituting 35 is pushed by the movable portion of the seat plate 1B. As a result, the obstacle detection switch 35 is activated, and a control signal indicating that the shutter curtain 1 has contacted the obstacle 34 is transmitted from the obstacle detection switch 35 via the signal line 36 as described above. It is transmitted to the control device 26. The control device 26 to which the control signal is input executes control for stopping the closing movement of the shutter curtain 1 abutting on the obstacle 34 for the electric motor of the automatic closing device 32.

  Specifically, the control device 26 executes control to reversely drive the electric motor of the automatic closing device 32, thereby rotating the pinion gear attached to the electric motor in the reverse direction. Slides (in other words, retreats) in the direction opposite to the arrow A direction shown in FIG. As a result, the brake device 19 that has been in the off state is turned on, and the closing movement of the shutter curtain 1 stops.

  The retraction of the slide member 83 is performed until the position of the front end (in other words, the front end) of the operating member 85 provided at the front end of the slide member 83 reaches the position shown in FIG. Specifically, when the control device 26 determines by a counter (not shown) that the drive shaft of the electric motor of the automatic closing device 32 has been rotated reversely a predetermined number of times, or that the slide member 83 of the automatic closing device has moved backward by a predetermined distance. Then, the execution of the control to reversely drive the electric motor is stopped, whereby the backward movement of the slide member 83 is stopped. The control device 26 executes control to reversely drive the electric motor when a microswitch (not shown) arranged inside the automatic closing device 32 described above stops operating (in other words, turns off). You may make it stop.

  After stopping the closing movement of the shutter curtain 1 in contact with the obstacle 34, the control device 26 controls the shutter curtain 1 to open and move for a predetermined time or a predetermined distance (in other words, to reverse and ascend). It may be executed.

  Thereafter, when the obstacle detection signal from the obstacle detection switch 35 is not input to the control device 26, that is, when the obstacle 34 that has been in contact with the shutter curtain 1 is removed, the control device 26 Then, in order to start the closing movement of the shutter curtain 1 again, control for turning off the brake device 19 that has been on is executed.

  That is, the control device 26 executes control to drive the electric motor of the automatic closing device 32 in the same manner as in the case where the closing movement of the shutter curtain 1 in which the stop state at the fully open position is maintained is started, This causes the pinion gear attached to the electric motor to rotate forward, so that the slide member 83 slides (in other words, moves forward) in the direction of arrow A shown in FIG. As a result, the brake device 19 which has been in the ON state is turned OFF again, so that the shutter curtain 1 closes and resumes the movement.

  In the present embodiment, when the building in which the shutter device according to the present embodiment is installed is not out of power, the switch 13, the control device 26, and the automatic closing device 32 operate with power supplied from a commercial power supply. If the building in which the shutter device according to the present embodiment is installed loses power, the switch 13, the control device 26, and the automatic closing device 32 supply power supplied from a battery (not shown). It works with.

  For this reason, in a normal time and an emergency, after the shutter curtain 1 starts to close and move, the building in which the shutter device according to the present embodiment is installed may fail due to a fire or for other reasons. , The shutter curtain 1 abutting on the obstacle 34 during the closing movement can be electrically stopped.

  As can be understood from the above description, the brake device 19 of the switchgear 13 shown in FIG. 2, the control device 26 shown in FIG. 1, the obstacle detection switch 35, and the signal lines 36 and 89. , 84, the take-up reel 37, and the automatic closing device 32 to electrically stop the closing movement of the shutter curtain 1 when the shutter curtain 1 during the closing movement comes into contact with the obstacle 34. Is configured.

  Since the control wire 81 is inserted into the outer cable 82, the control wire 81 can be protected by the outer cable 82 at the time of work such as construction work of the ceiling member 5. Can be prevented from being damaged.

  In the present embodiment described above, the other end 81B of the control wire 81 is directly connected to the thermal fuse 40 without being connected to the lever member 66 as an intermediate member as shown in FIG. You may. That is, the other end 81 </ b> B of the control wire 81 may be wound around the body 43 of the first member 41 of the thermal fuse 40. In this case, the lever member 66 and the base member 61 become unnecessary, and the upper ends 145B and 146B, which are the upper portions of the second member 44 of the thermal fuse 40, only engage with the lower surface 60B of the bottom 60 of the case member 59. Become.

  As described above, in the present embodiment, when the shutter curtain 1 comes into contact with an obstacle in the middle of the closing movement, an electric opening / closing body stopping device for stopping the closing movement electrically is used. The electric shutter curtain stopping device is provided with a control device 26 for executing at least on / off switching control of the brake device 19 of the opening / closing device 13, and the shutter curtain 1 is disposed on an obstacle 34. An obstacle detection switch 35 that is activated by contact, signal lines 36 and 89 for connecting the obstacle detection switch 35 and the control device 26, and a slidable switch for switching the brake device 19 on and off. The automatic closing device 32 having the sliding member 83 is connected to the automatic closing device 32 and the control device 26. It is configured to include the order of the signal line 84, a.

  The obstacle detection switch 35 is disposed on the shutter curtain 1, and among the signal lines 36 and 89 for connecting the obstacle detection switch 35 and the control device 26, the signal line 36 is connected to the shutter curtain 1. Is wound on a take-up reel 37 disposed on a lintel 16 which is an upper side forming member forming an upper side of the entrance 2 which is an opening opened by the reel, and is fed out.

  Next, a shutter device modified by a modification method according to the present embodiment, which will be described later, will be described with reference to FIGS. In the following description, among the devices and members constituting the shutter device after the repair, the devices and members used in the shutter device before the repair are denoted by the same reference numerals, and their structures and operations are described. May be omitted.

  FIG. 13, which is a view similar to FIG. 1 described above, shows the entire shutter device after the repair according to the present embodiment. The shutter device after the renovation is a shutter device combined with management and disaster prevention, similarly to the shutter device before the renovation.

  As shown in FIG. 14, which is a cross-sectional view taken along the line S14-S14 in FIG. 13, the shutter box 8 shown in FIG. And the like. The switch 13 shown in FIG. 13 is also shown in FIG. 14, and the rotational force of the drive shaft 14 of the switch 13 is controlled by the driving sprocket wheel 12A attached to the drive shaft 14 and the winding. The driven shaft 11 is driven by a driven sprocket wheel 12B attached to the one end of the take-up shaft 11 and a driving force transmission means 12 by an endless roller chain 12C bridged between the sprocket wheels 12A and 12B. Is transmitted to The switchgear 13 is attached to a bracket member 15 coupled to one of the left and right side surfaces 8A and 8B of the shutter box 8, as shown in FIGS. I have.

  As can be seen from FIG. 14, the shutter curtain 1 is wound around the winding shaft 11, and the upper end of the shutter curtain 1 is connected to the outer peripheral surface of the winding shaft 11. Further, a portion of the shutter curtain 1 below the winding shaft 11 is hung down below the ceiling member 5 through a slit 17 provided in a lintel 16 disposed on the ceiling member 5, Both ends in the width direction of the curtain 1 are slidably inserted into the left and right guide rails 6 as described above. The lintel 16 is formed by lintel members 16A and 16B arranged to face each other, and a slit 17 is formed between the lintel members 16A and 16B.

  FIG. 15 is a cross-sectional view showing the internal structure of the switchgear 13 as in FIG. 2 described above. As shown in FIG. 15, in the shutter device after the repair according to the present embodiment, the switch 13 includes the automatic closing device 32 provided in the shutter device before the repair shown in FIG. Instead, an automatic closing device 132 which is a part of the multifunction device 200 whose specific structure and function will be described later is attached. Similarly to the automatic closing device 32, the automatic closing device 132 also turns off the brake device 19 of the switchgear 13 that has been on and starts the closing movement of the shutter curtain 1 based on the operation of the fire detecting device 39. belongs to.

  As shown in FIG. 13, the control device 26 provided in the shutter device before the repair is directly attached to the switchgear 13, and the control device 26 is used in the shutter device after the repair. Is for electrically controlling the electric motor device 18 and the brake device 19 of the switchgear 13.

  Further, of the left and right building frames 3A and 3B shown in FIG. 13, the operating device 30 provided in the shutter device before the renovation is directly attached to one of the building frames 3A. The operation of the shutter device after repair by operating the provided buttons (“open” button, “close” button, “stop” button) is the same as that of the shutter device before repair.

  In this embodiment, the curtain body 1A of the shutter device before the repair is used as it is as the curtain body 1A as the opening and closing body of the shutter device after the repair, but the seat plate as the end member of the shutter device after the repair. 1B 'has been replaced with a seat plate 1B of the shutter device before the repair, which has a shape, size and structure different from the seat plate 1B. That is, in the present embodiment, as will be described later, after the seat plate 1B of the shutter device before repair is removed, a seat plate 1B 'having a shape, size, and structure different from the seat plate 1B is newly attached. It has become.

  In the modified shutter device, the fact that a load in the direction of arrow A acts on the first portion 31A provided in the brake device 19 shown in FIG. This is performed by an automatic closing device 132 which will be described later, which is a part of the constituent device. The automatic closing device 132 is a mechanical control device for mechanically controlling the brake device 19 of the opening / closing device 13 serving as the driving device of the shutter curtain 1 as will be described later.

  FIG. 16 is a sectional view taken along the line S16-S16 in FIG. 13 showing the structure of the portion of the seat plate 1B 'of the shutter curtain 1 shown in FIG. Like the shutter device before the renovation, the shutter curtain 1 of the present embodiment also has the curtain body 1A and the seat plate 1B 'as described above, and the seat plate 1B' is formed by the fixed portion 170A and the movable portion 170B. Become. Further, the shutter curtain 1 has a curtain main portion 171A and a curtain sub-portion 171B, and the curtain main portion 171A is configured by the curtain body 1A and the fixed portion 170A of the seat plate 1B ', The curtain sub-portion 171B is constituted by the movable portion 170B of the seat plate 1B '. Therefore, the curtain sub-portion 171B is disposed closer to the shutter curtain 1 than the curtain main portion 171A. The curtain main part 171A is an opening / closing body main part in the modified shutter device according to the present embodiment, and the curtain sub part 171B is an opening / closing sub part in the modified shutter device according to the present embodiment. It has become.

  Further, as shown in FIG. 16, a fixing portion 170A of the seat plate 1B ', which is connected to the curtain body 1A, is formed of inner and outer members 175 and 176 both having a box-shaped cross section. The movable section 170B is vertically movable with respect to the section 170A. As can be seen from FIG. 16, the lower surfaces of the inner and outer members 175 and 176 forming the fixed portion 170A form an opening 178, and the upper end of the rising portion 179 of the movable portion 170B extends from the opening 178 to the fixed portion 170A. Is inserted into the internal space. Extending portions 179A and 179B extending outward in the thickness direction of the shutter curtain 1 are formed at the upper end of the rising portion 179, and these extending portions 179A and 179B are attached to the lower end of the inner member 176 of the fixing portion 170A. By riding on the upper surfaces of the formed protruding pieces 176A and 176B, the movement limit of the movable part 170B to the lower side with respect to the fixed part 170A is defined.

  A swinging member 181 that can swing up and down around a fulcrum shaft 180 extending in the width direction of the shutter curtain 1 is housed inside the fixed portion 170A. As shown in FIG. 17, when the movable portion 170B rises with respect to the fixed portion 170A, that is, when the shutter curtain 1 during the closing movement comes into contact with the obstacle 34 shown in FIG. When the extending portion 179A of the rising portion 179 of the portion 170B pushes up the swinging member 181, the swinging member 181 swings upward about the fulcrum shaft 180.

  As shown in FIGS. 16 and 17, a case 133 also shown in FIG. 13 is attached to the fixing portion 170A of the seat plate 1B ', and the inside of the case 133 is shown in FIGS. 20. As shown in FIG. 20, inside the case 133, there is provided a rotating member 135 which is a ratchet hole type gear in which a large number of teeth 135A are formed at equal intervals in a circumferential direction on an outer peripheral portion. The take-up reel 137 is rotatably housed around a shaft 141 serving as a fixed shaft fixed to the case 133 as described later, and is coaxial because the rotation center shaft is the shaft 141. The rotating member 135 and the take-up reel 137 are integrated with each other as described later. Further, a lower end of a lock wire 136 is coupled to the take-up reel 137, and a lower portion of the lock wire 136 extending downward from the above-mentioned lintel 16 is provided with a shaft 129 </ b> A inside the case 133. Is wound around a take-up reel 137 via a guide roller 129 which is rotatably accommodated around the center, and an upper portion of the lock wire 136 extends upward from the upper surface of the case 133. The upper end of the lock wire 136 extends to the direction changing device 138 shown in FIGS. 13, 14, and 26.

  In the above description, the lock wire 136 whose lower portion is wound around the take-up reel 137 so as to be able to be unwound freely is a flexible cord-like member. When the shutter curtain 1 closes and moves downward, the shutter curtain 1 closes and moves while the lock wire 136 is fed out from the take-up reel 137 that rotates in the direction of arrow S about the axis 141 in FIG. Become.

  FIG. 19 is an overall front view of the case 133 in which the rotating member 135, the take-up reel 137, and the guide roller 129 are housed. FIG. 22 is a cross-sectional view taken along line S22-S22 in FIG. The figure is shown. As shown in FIG. 22, a return spring storage space 137A (see also FIG. 20) is provided inside the take-up reel 137 in which a groove 137B for taking up the lock wire 136 is formed on the outer peripheral portion. A return spring 139, which is partially omitted in FIG. 20, is stored in the return spring storage space 137 </ b> A, and is an axis serving as a rotation center axis of the rotating member 135 and the take-up reel 137. The return spring 139 wound around the outer periphery of 141 is a spring. For this reason, the return spring 139 is a spiral spring in which the shaft 141 is inserted at the center.

  An inner end which is one end of the return spring 139 is fixed to the case 133 and connected to a shaft 141 serving as a member on the case 133 side, and an outer end which is the other end is described later. As described above, it is connected to the rotating member 135 and the take-up reel 137. Therefore, when the rotating member 135 and the take-up reel 137 rotate in the direction of arrow S in FIG. 20 and the shutter curtain 1 closes and moves downward, the return spring 139 rotates to feed out the lock wire 136. The return spring force is accumulated by the take-up reel 137, and when the shutter curtain 1 opens and moves upward, the rotating member 135 and the take-up reel 137 are reversed in the direction of the arrow S by the return spring force accumulated in the return spring 139. , The lock wire 136 is wound around the take-up reel 137.

  For this reason, in the present embodiment, a take-up reel 140 and a return spring 139 constitute a take-up device 140 that allows the lock wire 136 to be fed out and taken up freely. When the shutter curtain 1 opens and closes, the rotating member 135 and the take-up reel 137 are rotated by the lock wire 136.

  In the present embodiment, the return spring 139, which is a spiral spring formed by a mainspring spring, is housed in the space 137A formed inside the take-up reel 137. Even if the size is small, as can be seen from FIG. 18, the dimension of the take-up reel 137 in the thickness direction of the shutter curtain 1 can be made sufficiently large, whereby the winding reel 137 winds the locking wire 136. The take length is sufficiently long, and it is possible to cope with a shutter device in which the opening and closing movement distance of the shutter curtain 1 is long.

  As shown in FIG. 20, inside the case 133, a lock member 150 rotatable vertically about a shaft 156 provided in the case 133 is housed. The lock member 150 of the present embodiment includes a main member 152 that does not have the tooth portion 153 that can be engaged with the tooth portion 135A of the rotating member 135 that is a ratchet wheel type gear, and a shutter curtain 1. The main member 152 having a length in the width direction is fastened to the main member 152 and includes a sub-member 151 having teeth 153. As described above, the lock member 150 is formed as a combined structure in which the sub member 151 and the main member 152, which are separate components, are overlapped in the thickness direction of the shutter curtain 1, so that the tooth portion 135A of the rotating member 135 can be formed. By quenching the auxiliary member 151 on which the engaging teeth 153 are formed, the teeth 153 can be formed on the teeth 153 in the same manner as the teeth 135A of the rotating member 135 without quenching the lock member 150 as a whole. , Can provide a large strength. Further, by forming the sub-member 151 from a hard metal or the like harder than the main member 152, the entire lock member 150 does not have to be formed of an expensive hard material.

  In the present embodiment, as shown in FIG. 25, a plurality of tooth portions separated from each other in the rotation direction of the lock member 150 about the shaft 156 are provided as the tooth portions 153 of the lock member 150. In the present embodiment, these teeth 153 are a first tooth 153A, a second tooth 153B, and a third tooth 153C, and these teeth 153A, 153B, 153C rotate the lock member 150. It is provided on an arc or substantially an arc centered on a shaft 156 that is the center of movement.

  In addition, as shown in FIG. 16, the swing is arranged so as to be vertically swingable about the fulcrum shaft 180 inside the fixed portion 170A (curtain main portion 171A) of the seat plate 1B 'described above. The pressing member 154 is attached to the member 181.

  As can be seen from FIG. 20, the lock member 150 is provided with a torsion coil spring 157. As shown in FIG. 25, one end 157 </ b> B of the torsion coil spring 157 in which the coil portion 157 </ b> A is wound around the outer periphery of the large diameter portion 156 </ b> B of the shaft 156 is formed by the main member 152, the sub member 151, 18 is locked to the lock member 150 by being inserted into the elongated hole 150A, and the other end 157C is connected to both side portions 133B, 133C of the case 133 shown in FIG. Of these, it is locked to the case 133 by being inserted into the hole of the bent portion 133D formed at the lower end of the side surface portion 133C shown in FIG. Therefore, the torsion coil spring 157 is provided between the shaft 156 and the lock member 150 and the case 133, and the lock member 150 is rotated about the shaft 156 by the spring force of the torsion coil spring 157 in FIG. It is urged to rotate in the direction of arrow M. As a result, a part of the lock member 150 is swung up and down freely around the fulcrum shaft 180 provided on the pressing member 154 provided on the shutter curtain 1, that is, on the curtain main portion 171 </ b> A of the shutter curtain 1. The pressing member 154 disposed on the member 181 is brought into contact with the pressing member 154.

  Therefore, when the shutter curtain 1 in the closing movement is in contact with the obstacle 34, the lock member 150 is moved in the direction indicated by the arrow M in FIG. Is provided with a shutter curtain side contact portion 158 and a lock member side contact portion 159 which come into contact with each other in order to rotate in the opposite arrow N direction. The shutter curtain side contact portion 158 is formed by the pressing member 154, and the lock member side contact portion 159 is formed by the first lock member side contact portion 159A of the main member 152 of the lock member 150 and the second lock member. There are two member side contact portions 159B. The first lock member side contact portion 159A and the second lock member side contact portion 159B are separated from each other in the width direction of the shutter curtain 1, which is the length direction of the lock member 150.

  Providing the lock member 150 with the first lock member side contact portion 159A and the second lock member side contact portion 159B constitutes the lock member 150 as shown in FIGS. 20 and 25. This can be realized by forming a portion of the main member 152 that does not overlap with the sub-member 151 into an L-shape or a substantially L-shape.

  In the present embodiment, of the lock member-side abutting portions 159, the first lock member-side abutting portion 159A is formed by the leaf spring 160 coupled to the main member 152. The member-side contact portion 159A is an elastic portion that can be elastically deformed.

  As shown in FIGS. 18 and 20, the main member 152 of the lock member 150 includes an extension member having a length extending on both sides in the thickness direction of the lock member 150 that is the thickness direction of the shutter curtain 1. 163 is provided, and the extending member 163 is formed by a rod-shaped member penetrating the main member 152. As shown in FIG. 18, a bent stop portion 133 </ b> E is provided at the lower end of the side surface portion 133 </ b> C of the case 133, so that the case 133 in which the lock member 150 and the like are housed and arranged inside. Before the lock member 150 is attached to the fixed portion 170A of the seat plate 1B 'of the shutter curtain 1, the locking member 150 is urged to rotate about the shaft 156 in the direction of arrow M in FIG. Also, by the end of the extension member 163 abutting on the stop portion 133E, the rotation limit of the lock member 150 in the direction of the arrow M is defined, whereby the first lock member side contact portion 159A of the lock member 150 is provided. Can be prevented from protruding from the lower opening of the case 133.

  As shown in FIG. 17, the seat plate 1B ′ of the shutter curtain 1 is fixed by the seat plate 1B ′ of the shutter curtain 1 during the closing movement, for example, by contact with the obstacle 34 shown in FIG. When the movable portion 170B (curtain sub-portion 171B) rises relatively to 170A (curtain main portion 171A), the pivoting member 181 pivots upward about the fulcrum shaft 180. The lock member 150 rotates in the direction of arrow N about the shaft 156 in FIG. As a result, the teeth 153 of the lock member 150 are engaged with the teeth 135A of the rotating member 135, as shown in FIG. 21, and by this engagement, the rotating member 135 is coupled to the rotating member 135. The integrated take-up reel 137 cannot rotate in the rotation direction (the direction of the arrow S in FIG. 20) when the shutter curtain 1 is moving in the closing direction, and therefore, the rotating member 135 and the take-up reel 137 is locked by the lock member 150 and cannot be rotated.

  For this reason, at this time, the locking wire 136 partially wound around the take-up reel 137 and the shutter curtain 1 on which the take-up reel 137 is disposed are mechanically coupled. Therefore, in the present embodiment, a mechanical coupling device 155 for mechanically coupling the lock wire 136, which is a cord-like member, and the shutter curtain 1 is constituted by the rotating member 135, the lock member 150, and the like. become. That is, the mechanical coupling device 155 operates when the curtain member 171B comes into contact with the obstacle 34, and the rotating member 135 that is rotated by the locking wire 136 when the shutter curtain 1 opens and closes. And a lock member 150 for stopping rotation of the motor 135.

  As described above, the lock member 150 is configured by stacking the main member 152 having the length in the width direction of the shutter curtain 1 and the sub member 151 in the thickness direction of the shutter curtain 1, and As shown in FIG. 25, the sub member 151 is attached to the main member 152 so as to be rotatable around a rotation center shaft 161. The main member 152 is formed with an arc-shaped long hole 152A centered on the rotation center shaft 161 and serves as a fastening screw member inserted into the long hole 152A from the round hole of the sub member 151. The shaft of the bolt 162 is inserted, and the end of the shaft of the bolt 162 protruding from the elongated hole 152A is screwed to a nut which is prevented from rotating by the main member 152 and is movably arranged along the elongated hole 152A. The auxiliary member 151 is fastened to the main member 152 by the bolt 162 and the nut by tightening the bolt 162. Further, when the bolt 162 is loosened, the sub member 151 can be rotated about the rotation center axis 161 by the elongated hole 152A for guiding the shaft of the bolt 162 with respect to the main member 152. When the bolt 162 is tightened later, the sub-member 151 whose position with respect to the main member 152 has been changed and adjusted can be re-fastened to the main member 152 with the bolt 162 and the nut.

  For this reason, in this embodiment, the bolt 162 in which the shaft is screwed to the nut is a fastening member for fastening and releasing the fastening between the main member 152 and the sub-member 151.

  Then, the small-diameter portion 156A of the shaft 156 is inserted into the round hole of the main member 152 so that the sub-member 151 can be rotated about the rotation center shaft 161 with respect to the main member 152. As shown in FIG. 25, a hole 151A formed in the sub-member 151 for inserting the small-diameter portion 156A is a long hole having an arc shape centered on the rotation center shaft 161. It has become. The coil portion 157A of the torsion coil spring 157 is wound around the outer periphery of the large diameter portion 156B of the shaft 156.

  In the present embodiment, the position of the auxiliary member 151 with respect to the main member 152, more specifically, the rotation center shaft 161 is determined by the rotation center shaft 161 and the bolt 162 in which the nut is screwed to the shaft portion. A position adjusting means 164 shown in FIG. 25 for adjusting the position of the sub member 151 with respect to the main member 152 at the center is configured.

  When the position of the sub member 151 with respect to the main member 152 is adjusted about the rotation center shaft 161 by the position adjusting means 164, as can be seen from FIG. 25, the tip of the tooth portion 153 of the lock member 150 and the rotating member 135 are obtained. Since the size of the gap 165 between the tip of the tooth portion 135A changes and is adjusted, the position adjusting means 164 also becomes the gap adjusting means 166 capable of adjusting the size of the gap 165. In this embodiment, the gap adjusting means 166 is provided on the lock member 150.

  In the present embodiment, the position of the rotation center axis 161 is the center axis of rotation of the entire lock member 150 so that the size of the gap 165 can be adjusted by the gap adjustment means 166. The position of the rotation center shaft 161 is shifted from the position of the shaft 156 in the width direction of the shutter curtain 1, which is the length direction of the lock member 150, as can be seen from FIG. The direction is opposite to the rotation member 135 with respect to the shaft 156.

  Both ends of the shaft 156 that is the central axis of rotation of the entire lock member 150 are inserted into holes formed in both side portions 133B and 133C of the case 133 shown in FIG. These holes are shown as slots 167 in FIGS. The length direction of the long hole 167 is a direction toward the rotating member 135. That is, the holes 167 formed for inserting and supporting both ends of the shaft 156 into the case 133 are elongated holes that extend toward the rotating member 135. For this reason, the lock member 150 and the shaft 156 are movable toward and away from the rotating member 135.

  The coil portion 157A is wound around the outer circumference of the shaft 156, and the torsion coil spring 157 provided between the case 133, the shaft 156, and the lock member 150 causes the shaft 156 and the lock member 150 to be moved by the spring force. 25, the torsion coil spring 157 is an elastic member having such an urging force. The shaft 156 is pressed against the end of the elongated hole 167 on the rotating member 135 side by the elastic urging force of the elastic member, so that the size of the gap 165 becomes the size set by the gap adjusting means 166.

  The case 133 which is attached to the fixing portion 170A of the seat plate 1B 'of the shutter curtain 1 and in which the above-mentioned mechanical coupling device 155 is housed is a case body as can be seen from FIGS. 18, 19 and 20. 185 and a cover member 186 that covers the case main body 185. As shown in FIG. 18, the case main body 185 connected to the fixing portion 170A of the seat plate 1B ′ of the shutter curtain 1 by a fastener 184 such as a screw shown in FIGS. A main portion 185A facing the lid member 186 in the thickness direction, and a bent portion of the entire outer edge portion of the main portion 185A which is bent at a right angle to the main portion 185A in the thickness direction of the shutter curtain from an appropriate position. 185B, and a screw hole 185D is formed in the tongue piece 185C provided in the bent portion 185B shown in FIG. The cover 186 is attached to the case body 185 by inserting the shaft of a fastener 187 such as a screw into the hole of the cover 186 shown in FIG. 19 and screwing the shaft into the screw hole 185D. be able to. Further, by removing the fastener 187, the cover member 186 can be separated from the case body 185.

  That is, the lid member 186 can be attached to and detached from the case body 185.

  As shown in FIG. 19, the cover member 186 is formed with a window hole 186A through which the inside of the case 133 can be visually recognized. The window hole 186A allows the gap adjusted by the gap adjusting means 166 in FIG. An operation of confirming the size of 165 can be performed. This checking operation is performed by inserting, for example, an inspection tool such as a clearance gauge from the window hole 186A between the tooth portion 135A of the rotating member 135 and the tooth portion 153 of the lock member 150. When it is determined that the size is inappropriate, the cover member 186 is removed, and after that, the bolt 162 described with reference to FIG. 25 is loosened, and the position of the sub member 151 with respect to the main member 152 of the lock member 150 is rotated. By adjusting the center axis 161 as a center, the size of the gap 165 can be adjusted to an appropriate size.

  After the gap 165 is adjusted, the window 186A of the cover member 186 attached to the case main body 185 may be closed by a closing member such as an adhesive sheet.

  Further, the window hole through which the inside of the case 133 can be visually recognized may be provided not only in the cover member 186 but also in the case body 185. According to this, before attaching the case 133 to the fixing portion 170A of the seat plate 1B 'of the shutter curtain 1, the size of the gap 165 can be confirmed by the above-described inspection tool inserted from the window hole provided in the cover member 186. The size of the gap 165 can be confirmed by an inspection tool inserted through a window hole provided in the case body 185. Further, even if the inspection tool is long in the thickness direction of the shutter curtain 1, The size of the gap 165 can be confirmed by passing this inspection tool through window holes provided in both the case body 185 and the cover member 186.

  Further, unlike the above description, the main member 152 and the sub-member 151 of the lock member 150 are formed of the same material, and the teeth 153 of the sub-member 151 are subjected to a hard surface coating process such as hard chrome plating. Alternatively, the required hardness may be provided to the teeth 153.

  The case 133 of this embodiment has the case body 185 and the cover member 186 as described above, and the case body 185 mainly faces the cover member 186 in the thickness direction of the shutter curtain 1. 18 and FIG. 19, which is a cross-sectional view taken along line S22-S22 in FIG. 19, the main portion 185A is the shutter of the side surface portions 133B and 133C of the case 133 described above. A side portion 133B near the curtain body 1A of the curtain 1 is formed, a lid member 186 forms a side portion 133C far from the curtain body 1A, and these side portions 133B and 133C are formed by the thickness of the shutter curtain 1. In the opposite direction.

  In the present embodiment, as shown in FIG. 22, a step 185E that forms a step in the thickness direction of the shutter curtain 1 is formed at an intermediate position in the vertical direction of the main part 185A of the case main body 185. The upper and lower sides of the step 185E are a first surface 188 and a second surface 189 of the main portion 185A. The upper first surface portion 188 is a portion of the main portion 185A that is closer to the lid member 186, and the lower second surface portion 189 is a portion of the main portion 185A that is farther from the lid member 186. .

  As shown in FIG. 22, the above-mentioned rotating member 135 and take-up reel 137 are integrally connected by a connecting member 142 such as a screw. 137 are performed coaxially as a common rotation center axis. The return spring storage space 137 </ b> A provided to store the return spring 139 inside the take-up reel 137 is a through space that penetrates in the axial direction of the take-up reel 137. Therefore, the width of the return spring 139, which is a spiral spring formed by a mainspring spring, can be made as large as the axial dimension of the take-up reel 137 (the thickness of the take-up reel). For this reason, the return spring 139 can accumulate a large return spring force when the shutter curtain 1 is closed and moved. When the shutter curtain 1 is opened, the return spring force allows the locking wire 136 to be more securely attached to the take-up reel 137. The spring having a large spring force can be wound.

  In the present embodiment, the opening on the curtain body 1A side of the shutter curtain 1 among the openings on both axial sides of the return spring storage space 137A is closed by the rotating member 135 and the curtain body of the shutter curtain 1 The opening on the side opposite to the 1A side is closed by a closing member 143. The closing member 143 has a cup shape having a closing member main body 143A axially opposed to the rotating member 135, and a ring-shaped flange 143B formed on substantially the entire circumferential edge of the closing member main body 143A. The flange 143B is press-fitted into the return spring storage space 137A, and the tip of the flange 143B is in contact with the rotating member 135. The shaft 141 serving as a common rotation center axis of the rotating member 135 and the take-up reel 137 passes through a return spring storage space 137A inside the take-up reel 137, and is formed on the rotating member 135 and the closing member main body 143A. One end of a shaft 141 whose both ends protrude outside the case 133 from holes formed in the main portion 185A of the case main body 185 and the cover member 186 is provided with a retaining member. 144 is attached.

  As shown in FIG. 22, a take-up reel axial position defining section 145 for defining the axial position of the take-up reel 137 rotatable about a shaft 141 is provided on the lid member 186. Are provided outside the return spring storage space 137A about the shaft 141. As shown in FIG. 22, the take-up reel axial direction position defining portion 145 protrudes toward the take-up reel 137, and as shown in FIG. It is a projection provided individually. Such a take-up reel axial position defining portion 145 can be formed by performing a half blanking process on a cover member 186 made of sheet metal.

  The take-up reel axial direction position defining portion 145 is formed as a plurality of protrusions projecting toward the take-up reel 137 and provided in a circumferential direction around the shaft 141 in this manner. Since the contact area and the rotational frictional resistance between the take-up reel axial position defining portion 145 and the take-up reel 137 are reduced, the take-up reel 137 can be smoothly rotated about the shaft 141.

  Further, the lid member 186 is provided with a closing member axial position defining section 146 for defining the axial position of the closing member 143 that is rotatable about the shaft 141. The closing member axial direction position defining portion 146 is provided so as to project toward the closing member 143 as seen in FIG. 22, and as shown in FIG. 19, has a circular projection through which the shaft 141 is inserted at the center. Department. This closing member axial direction position defining portion 146 can also be formed by performing a half blanking process, a drawing process, or the like on the cover member 186 made of sheet metal.

  By providing the take-up reel axial position defining portion 145 and the closing member axial position defining portion 146 on the cover member 186, as shown in FIG. 22, the rotating member 135 allows the main portion 185A of the case main body 185 to rotate. And the position of the rotation member 135 and the take-up reel 137 in the axial direction of the shaft 141 can be defined. In other words, the return spring storage space 137A provided inside the take-up reel 137 for storing the return spring 139 may also be a through space penetrating in the axial direction as described above. The position of the rotation member 135 and the position of the take-up reel 137 in the axial direction of the shaft 141 can be defined by the axial position defining portion 145 and the closing member axial position defining portion 146. It is possible to more reliably engage with the tooth portion 135A of the rotating member 135.

  As shown in FIG. 22, a split groove 141A cut from the end on the lid member 186 side is formed on the shaft 141, and the split groove 141A is formed as a spiral spring by a spring. An inner end 139A which is one end of the spring 139 is inserted and locked, whereby the inner end 139A is connected to the shaft 141. Further, a loop portion 139B is formed at the outer end, which is the other end of the return spring 139 (see also FIG. 20).

  As can be seen from FIG. 22, an insertion portion 135B is formed in the plate-shaped rotating member 135 by cutting and raising, and the insertion portion 135B is inserted inside the loop portion 139B. In addition, an insertion portion 143C is also formed on the closing member 143, and as shown in FIG. 20, the insertion portion 143C is provided at a position where the above-described flange 143B of the closing member 143 is missing. Are also inserted inside the loop portion 139B. As a result, the loop portion 139B serving as the outer end of the return spring 139 is connected to the rotating member 135, the take-up reel 137 connected to the rotating member 135 by the connecting member 142, and the closing member 143. Will be. For this reason, as described above, when the shutter curtain 1 is closed and moved downward, and the rotating member 135 and the take-up reel 137 rotate in the direction of the arrow S in FIG. 20, the lock wire 136 is fed out to the return spring 139. The return spring force is accumulated by the rotating take-up reel 137, and when the shutter curtain 1 opens and moves upward, the rotating member 135 and the take-up reel 137 are moved by the arrow S by the return spring force accumulated in the return spring 139. By rotating in the direction of arrow T opposite to the direction, the lock wire 136 is wound on the take-up reel 137.

  The insertion portion 135B of the rotating member 135 and the insertion portion 143C of the closing member 143 are inserted into the loop portion 139B of the return spring 139, whereby the rotating member 135 and the closing member 143 are connected via the loop portion 139B. Therefore, the closing member 143 is not connected to the take-up reel 137 with screws or the flange 143B of the closing member 143 is pressed into the return spring storage space 137A of the take-up reel 137 with a large pressure. The rotary member 135 and the closing member 143 can be connected in a rotational direction about the shaft 141 without press-fitting or simply inserting without press-fitting.

  As shown in FIG. 22, of both ends of the shaft 141, an end of the case body 185 on the main part 185A side protrudes from the main part 185A, and the protruding end has a spacer 147 and a rotating member. The rotation plate 148 and the retaining member 149 are attached, and the rotation plate 148 is integrated with the shaft 141. FIG. 23 is a view taken in the direction of the arrow S23 in FIG. 22. As shown in FIG. 23, the rotating plate 148 having a disk-like shape in which the shaft 141 penetrates and is fixed at the center is provided with the shaft 141. A plurality of holes 148A are provided at equal intervals in the circumferential direction centered at. Further, as shown in FIG. 22, an opening 185F through which the lower portion of the rotating plate 148 is inserted is formed in the above-mentioned step portion 185E of the case main body 185.

  Of the main portion 185A of the case main body 185, a protruding portion 185G protruding toward the rotary plate 148 is provided on the second surface portion 189 below the step portion 185E by cutting or bending, and the protruding portion 185G is provided on the second surface portion 189. The shaft of a bolt 201 as a pin-shaped member is screwed into the formed screw hole 185H, and this shaft can be inserted into the hole 148A of the rotating plate 148. By performing this insertion, the rotating plate 148 and the shaft 141 to which the rotating plate 148 is coupled are fixed to the case 133 so as not to rotate.

  After the shaft portion of the bolt 201 is removed from the hole 148A by the rotation operation of the bolt 201, the rotation operation of the rotary plate 148 is performed or the tool is engaged with the engagement groove 141B provided on the shaft 141. By performing the rotation operation of 141, the shaft 141 can be rotated with respect to the case 133. When this rotation is performed, the inner end 139A is connected to the shaft 141, and the return spring 139 wound around the outer periphery of the shaft 141 rotates the inner end 139A in the circumferential direction of the return spring 139. As a result, the coil spring is tightened or loosened in accordance with the rotation direction of the shaft 141, so that the spring force of the return spring 139, which is a spiral spring formed by a mainspring spring, is adjusted. Later, by inserting the shaft of the bolt 201 into the hole 148A of the rotating plate 148 reaching the position facing the shaft, the shaft 141 is fixed again to the case 133 so that it cannot rotate.

  For this reason, the return spring 139 is provided by the bolts 201 and the like, which are disposed in the screw holes 185H of the shaft 141 and the rotating plate 148 and the screw holes 185H of the case 133 and can be inserted into and removed from the holes 148A of the rotating plate 148. The spring force adjusting means 202 for adjusting the magnitude of the spring force is configured. The spring force adjusting unit 202 is a unit configured to rotate the shaft 141 to rotate the inner end of the return spring 139.

  The bolt 201 serving as a pin-shaped member is formed in the case 133 and one of the plurality of holes 148A formed in the rotating plate 148 in the circumferential direction around the shaft 141. By being inserted into the screw hole 185H, it serves as a connecting member for connecting the rotating plate 148 and the case 133 after rotation about the shaft 141.

  According to the spring force adjusting means 202, even if the spring force of the return spring 139 changes due to repeated opening / closing movement of the shutter curtain 1 or aging, the return spring is used to wind the lock wire 136 onto the take-up reel 137. The magnitude of the return spring force accumulated at 139 can be adjusted to an appropriate value.

  The spring force adjusting means 202 adjusts the spring force of the return spring 139 to a size corresponding to, for example, the vertical opening and closing movement stroke of the shutter curtain 1 shown in FIG. It can also be used to adjust the size to an appropriate size when the shutter curtain reaching the position of the lintel 16 is fully opened.

  Further, in the spring force adjusting means 202 of the present embodiment, adjusting the spring force of the return spring 139 involves rotating the rotating plate 148 or engaging a tool in the engaging groove 141B provided on the shaft 141, Since the shaft 141 is rotated by this tool, the location of the rotary plate 148 and the location where the engagement groove 141B of the shaft 141 is provided are the operation locations operated by the spring force adjusting means 202. . In the present embodiment, as shown in FIG. 16, this operation part and the case 133 in which the take-up reel 137 is housed are arranged side by side in the thickness direction of the shutter curtain 1. The operation location is disposed between the case 133 and the above-described curtain main body 1 </ b> A of the shutter curtain 1.

  According to this, after the case 133 in which the spring force adjusting means 202 is pre-assembled is attached to the fixing portion 170A of the seat plate 1B 'of the shutter curtain 1, after the spring force adjustment, an operator or the like erroneously or others It is possible to prevent operation of this operation location. Therefore, after the case 133 is attached to the fixing portion 170A of the seat plate 1B 'of the shutter curtain 1, the adjusted spring force of the return spring 139 can be maintained.

  After the case 133 is attached to the fixing portion 170A, the operating point of the spring force adjusting means 202 is changed to the shutter curtain 1 of the case 133 so that an operator or the like can operate the spring force adjusting means 202. May be provided at a location opposite to the curtain body 1A.

  In addition, as shown by the two-dot chain line in FIG. 22, the main member 152 ′ of the members constituting the above-described lock member 150 is extended to the side surface of the rotating member 135 beyond the sub member 151. May be provided. According to this, a portion of the rotating member 135 facing the second surface portion 189 of the main portion 185A of the case main body 185 has a space between the portion and the second surface portion 189. The displacement of the rotating member 135 and the take-up reel 137 toward the second surface portion 189 during rotation of the rotating member 135 can be prevented by the extended portion of the main member 152 ′, whereby the teeth 135A of the rotating member 135 and the locking member can be prevented. Engagement of the 150 sub-members 151 with the teeth 153 can be realized more reliably.

  When the extended portion is provided in the main member 152 ′, the window hole provided for inserting an inspection tool such as a clearance gauge into the lid member 186 of the case 133 or the case body 185 as described above. A hole similar to 186A may be provided in this extension.

  Furthermore, according to the present embodiment, the take-up reel 137 and the return spring 139 are housed inside the case 133 and are arranged on the seat plate 1B 'which is the end member of the shutter curtain 1 described above. The take-up reel 137 and the return spring 139 can be effectively protected from external force and the like when the shutter curtain 1 is opened and closed. Since the mechanical coupling device 155 described above is also housed inside the case 133 and disposed on the seat plate 1B ′ of the shutter curtain 1, the mechanical coupling device 155 also operates when the shutter curtain 1 is opened and closed. , Can be effectively protected from external forces and the like.

  As shown in FIG. 20, a guide member 203 for guiding the above-described locking wire 136 is arranged in the case 133. The guide member 203 made of a synthetic resin includes a first guide portion 203 </ b> A facing the outer circumference of a part of the guide roller 129 and a lock wire 136 inside and outside the case 133 inside the case 133. A second guide portion 203B which is disposed at a location where the case 133 enters and exits, a part of which is exposed to the outside of the case 133, and the other portion is accommodated inside the case 133. A hole 203 </ b> C through which the lock wire 136 is inserted vertically is formed as a long hole long in the width direction of the shutter curtain 1.

  The first guide portion 203A is arranged at a position close to the outer peripheral surface of the guide roller 129 between the guide roller 129 and the lock member 150 arranged below the guide roller 129. Therefore, even if the lock wire 136 is loosened before the operation of attaching the case 133 to the shutter curtain 1 or the like, the first guide portion 203A prevents the loosened portion from reaching the lock member 150. Can be. Further, even when the tension of the portion of the lock wire 136 wrapped around the guide roller 129 may disappear during the opening and closing movement of the shutter curtain 1 up and down, it is ensured that this portion contacts the lock member 150. This can be prevented by the first guide portion 203A, and it can be ensured that the shutter curtain 1 normally opens and closes. That is, the first guide portion 203A of the guide member 203 can prevent the lock wire 136 from becoming entangled with the lock member 150.

  FIG. 24 is a sectional view taken along line S24-S24 of FIG. As shown in FIG. 24, both ends of the above-mentioned extending member 163 fixed to the main member 152 of the lock member 150 so as to penetrate the thickness of the lock member 150 are connected to the shutter curtain in the case 133. It contacts the inner surfaces of the two side portions 133B and 133C facing each other in the thickness direction of 1, or faces the inner surfaces of these side portions 133B and 133C with a slight gap. The position of the lock member 150 where the extension member 163 is disposed is defined by the length of the lock member 150 that is the width direction of the shutter curtain 1 from the shaft 156 that is the rotation center axis of the entire lock member 150. It is a place separated in the direction. For this reason, as described above, when the shutter curtain 1 that is closing and moving contacts the obstacle 34, the lock member 150 rotates around the shaft 156 in the direction of arrow N in FIG. When the lock member 150 rotates in the direction, it is possible that the lock member 150 swings about the shaft 156 in the thickness direction of the lock member 150 (the thickness direction of the shutter curtain 1 and the thickness direction of the rotation member 135 described above). , Are blocked by the stretching member 163.

  For this reason, as can be seen from FIG. 18, the rotating member 135 is formed of a plate material having a small thickness, and the auxiliary member 151 of the locking member 150 having the teeth 153 engaged with the teeth 135A of the rotating member 135. Also, even if the lock member 150 is formed of a plate-like material having a thickness similar to that of the rotating member 135, the extension member 163 prevents the lock member 150 from swinging about the shaft 156 in the thickness direction of the lock member 150. Therefore, when the shutter member 1 that is being closed moves against the obstacle 34 and the lock member 150 rotates around the shaft 156 in the direction of arrow N in FIG. The teeth 153 can be more reliably engaged with the teeth 135A of the rotating member 135.

  For this reason, the extension member 163 is used to stop the lock member 150 from swinging in the thickness direction of the lock member 150 around the shaft 156, in other words, in the axial direction of the shaft 156, in the thickness direction of the rotating member 135. Of the lock member.

  The swinging of the lock member 150 about the shaft 156 in the thickness direction of the lock member 150 depends on the size of the hole of the lock member 150 through which the shaft 156 is inserted and the case where both ends of the shaft 156 are inserted. This occurs when the size of the hole 133 is not the exact predetermined value and is larger than the predetermined value. For this reason, according to this embodiment, by providing the extending member 163 in the lock member 150, it is not necessary to set the size of these holes to an accurate predetermined value, and it is possible to easily process these holes. Become.

  Further, the extending member 163 of the present embodiment is made of, for example, a hard synthetic resin having a smaller coefficient of friction than metal. Therefore, even if both ends of the extending member 163 contact the inner surfaces of the side surfaces 133B and 133C of the case 133 made of metal, the lock member 150 rotates smoothly up and down around the shaft 156. Can be guaranteed.

  FIG. 26 shows a specific structure of the direction changing device 138 shown in FIGS. The direction changing device 138 determines the direction of the locking wire 136 which is a flexible cord-like member extending vertically upward or substantially vertically upward from the above-described case 133 of the shutter curtain 1 by the thickness of the shutter curtain 1. The horizontal direction or the substantially horizontal direction, which is the vertical direction, is used. The main body 138A of the direction changing device 138 is placed and fixed on a step 16C formed horizontally or substantially horizontally on the upper and lower middle portions or the upper surface of the lintel member 16A among the members constituting the lintel 16 described in FIG. Have been. A plurality of guide rollers 190 are rotatably provided on the main body 138A.

  In the present embodiment, there are five guide rollers 190, 90A to 90E, and the first guide roller 190A is arranged at a position closest to the shutter curtain 1, and the second guide provided above the first guide roller 190A. The roller 190B is disposed at a position second closest to the shutter curtain 1, and a third guide roller 190C provided above the second guide roller 190B is disposed at a position third closest to the shutter curtain 1, The fourth guide roller 190D having the same or substantially the same height position as the third guide roller 190C is disposed at a position farthest from the shutter curtain 1. The fifth guide roller 190E is arranged above the third guide roller 190C.

  The lock wire 136 extending vertically upward or substantially vertically upward from the case 133 is guided by the first to fourth guide rollers 190A to 90D, and is vertically moved by the third guide roller 190C and the fifth guide roller 190E. The shutter wire 1 is pinched and its direction is changed in a horizontal direction or a substantially horizontal direction which is the thickness direction of the shutter curtain 1. The converted lock wire 136 is slidably inserted into the cylindrical guide member 191. I have.

  The guide member 191 includes a bent portion 138B formed on the main body 138A, a rising portion 16D rising from the step 16C of the lintel member 16A, and two lower extending portions 192A and 192B of the support member 192. The lock wire 136 is inserted through and fixed to a lower extension 192A near the lintel member 16A, and an end of the lock wire 136 protrudes from an end of the guide member 191.

  As shown in FIG. 14, the support member 192 is provided with an intermediate member 193 interposed between the shutter box 8 and the lintel member 16A in order to attach the lintel member 16A to the above-described shutter box 8. Is joined to.

  In this embodiment, as shown in FIG. 20, the lock wire 136 whose lower end is connected to the take-up reel 137 is directly extended from the take-up reel 137 to the outside of the case 133. Instead, it extends to the outside of the case 133 via the guide roller 129, and as shown in FIG. 20, the height position of the rotation center axis 29A of the guide roller 29 is set to the rotation center axis 141 of the take-up reel 137. 26, or by setting the diameter of the guide roller 129 to be smaller than the diameter of the take-up reel 137, the shutter curtain 1 is opened to the fully open position, as shown in FIG. When it moves, in other words, when the position of the lower surface of the seat plate 1B 'of the shutter curtain 1 matches or substantially matches the position of the lower surface of the lintel 16 The direction of the locking wire 136 is adjusted in a predetermined horizontal direction or a substantially horizontal direction by a direction changing device 138 disposed on a step 16C of a lintel member 16A which is an immovable member with respect to the shutter curtain 1 that opens and closes. Can be converted to

  In other words, by setting the height position at which the direction change device 138 is arranged to be lower than the height position of the upper surface of the case 133, the direction change device 138 is immovable with respect to the shutter curtain 1 that opens and closes. Can be disposed on the step 16C of the lintel member 16A, which is a stationary member.

  As described above, the direction changing device 138 is a device for changing the direction of the locking wire 136 extending from the mechanical coupling device 155 in the opening movement direction of the shutter curtain 1 to a direction making an angle with the opening movement direction. ing.

  As shown in FIGS. 13 to 15, the multifunction device 200 is mounted and fixed above the switchgear 13. FIG. 27 is a plan view showing the internal structure of the multifunction device 200. FIG. 28 is a front view showing the internal structure of the multifunction device 200 as seen from the arrow S28 in FIG. 27. FIG. FIG. 27 is a sectional view taken along line S29-S29 of FIG.

  The composite device 200 is a device in which an automatic closing device 132, an intermediate device 300, and a delay device 400 are combined in a complex manner. The automatic closing device 132 includes a fire detecting device 39 in which a fire occurrence is shown in FIG. When the shutter curtain 1 is sensed, the brake device 19 of the switch 13 is controlled mechanically to automatically close and move the shutter curtain 1 stopped at the fully open position or a position halfway in the opening and closing direction to be fully closed, This is for closing the entrance 2 in FIG. 13 with a shutter curtain 1 having smoke prevention and / or fire prevention.

  The multifunction device 200 is attached to an upper portion of the switchgear 13 by a bracket 210A shown in FIG. 28 provided on a machine frame 210 of the multifunction device 200. This state is also shown in FIG. Further, as shown in FIG. 27, up to the multifunction device 200, each end of the first control wire 211, the second control wire 212, and the third control wire 213 for controlling the multifunction device 200 is provided. The part is stretched. In the refurbished shutter device, one end of the control wire 81 extending from the fire detection device 39 also extends to the multifunction device 200.

  These control wires 211 to 213 are, similarly to the lock wire 136 described above, formed of a flexible cord-like member, and are also elongated members. Similarly, the control wire 81 is also a string-like member having flexibility as described above, and is also an elongated member.

  Further, these control wires 211 to 213 are slidably inserted into outer cables 214 to 216 having flexibility. Therefore, the control wires 211 to 213 are protected by the outer cables 214 to 216. Similarly, since the control wire 81 is slidably inserted into the flexible outer cable 82 as described above, the control wire 81 is protected by the outer cable 82.

  As shown in FIGS. 13, 14 and 26, the first control wire 211 extends from the multifunction device 200 to near the direction changing device 138, and the end of the first control wire 211 is As shown in FIG. 26, it is connected to the lock wire 136 via the connection member 194. The end of the outer cable 214 of the first control wire 211 is coupled to the lower extension 192B of the two lower extensions 192A and 192B of the support member 192.

  As described above, in the present embodiment, the shutter curtain 1 that is arranged on the shutter curtain 1 and is in the closing movement comes into contact with the obstacle 34, so that the shutter curtain 1 is mechanically coupled to the shutter curtain 1 by the mechanical coupling device 155. The string members to which the tension due to the own weight of the shutter curtain 1 acts are the lock wire 136 on the mechanical coupling device 155 side as the first string member and the mechanical control device as the second string member. A first control wire 211 on the automatic closing device 132 side is included, and the lock wire 136 and the first control wire 211 are connected via a connecting member 194 shown in FIG.

  In the present embodiment, the lock wire 136 and the first control wire 211 are separate members connected by the connection member 194. However, the lock wire 136 is extended to the multifunction device 200 to perform the first control. The use wire 211 may be omitted.

  As shown in FIGS. 27 to 29, the above-described automatic closing device 132 and intermediate device 300, each of which is a part of the multifunction device 200, are disposed in the machine frame 210 of the multifunction device 200. ing. In other words, the machine frame in which the automatic closing device 132 is arranged and the machine frame in which the intermediate device 300 is arranged are the same machine frame 210. In this machine frame 210, the automatic closing device 132 and the intermediate device 300 They are arranged adjacently. In addition, as will be apparent from the following description, the above-described delay device 400 is also disposed in the machine casing 210. For this reason, the automatic closing device 132, the intermediate device 300, and the delay device 400 are one unitized device. Therefore, the factory for the automatic closing device 132, the intermediate device 300, and the delay device 400 is used. , Handling operations such as transportation to a shutter device installation site, maintenance operations, and the like can be easily performed.

  In addition, among the automatic closing device 132, the intermediate device 300, and the delay device 400, the intermediate device 300 and the delay device 400 are disposed on the upper portion inside the machine frame 210. The figure is shown in FIG. Further, the automatic closing device 132 is disposed at a lower portion inside the machine casing 210, and a plan view of the automatic closing device 132 is shown in FIG.

  The intermediate device 300 is located between the first control wire 211 connected to the mechanical coupling device 155 shown in FIGS. 20 and 21 via the lock wire 136 and the automatic closing device 132. It is a placed device. In other words, the intermediate device 300 is a connection device for directly connecting the first control wire 211, which is a string-shaped member, and the automatic closing device 132.

  Next, the automatic closing device 132 will be described.

  As shown in FIGS. 27 to 29, the machine casing 210 of the multifunction device 200 is provided with two rising portions 210B and 210C facing each other, and is formed at these rising portions 210B and 210C. The plate-like first slide member 220 of FIG. 31 having a length straddling the two rising portions 210B and 210C is slidably inserted into the holes 210D and 210E of FIG. A spring 221 is wound around the outer periphery of the first slide member 220, and the spring force of the spring 221 constantly exerts a forward force on the first slide member 220 toward the rising portion 210 </ b> B. The direction of the forward force is a direction in which the first portion 31A of the lever member 31 provided in the switch 13 described with reference to FIG.

  As shown in FIGS. 15 and 28, an operation member 222 is attached to a bent portion 220 </ b> A formed by bending downward at the front end of the first slide member 220. An actuated member 86 is vertically connected to the first portion 31A of the base member 31. When the first slide member 220 advances by the spring force of the spring 221, the load applied to the first portion 31A of the lever member 31 in the direction of arrow A shown in FIG. Works. As shown in FIG. 28, since the operating member 222 of the present embodiment is a head 224A of the bolt 224, the head 224A is operated to rotate the bolt 224 to bend the first slide member 220. The distance between the actuating member 222 and the actuated member 86 can be adjusted to an appropriate size by moving the member 220A forward and backward. After performing this adjustment, the position of the operating member 222 with respect to the operated member 86 is adjusted by rotating the lock nut 225 screwed to the bolt 224 and pressing the lock nut 225 against the bent portion 220A. , It can be fixed at an appropriate position.

  As shown in FIG. 31, a solenoid 226 is attached to the machine frame 210 of the multifunction device 200, and the plunger 227 of the solenoid 226 causes the spring force of the spring 228 to protrude the plunger 227 from the solenoid 226. It always works in the direction to make it. A tip member 240 is attached to the tip of the plunger 227, and one end of an L-shaped bent lever member 229 that is rotatable about a central shaft 229A comes into contact with the tip member 240. I have. As can be seen from FIG. 29, the tipping member 240 having an inverted L-shape has an elevating member 241 on the surface opposite to the surface on which the one end of the bending lever member 229 is in contact. The lowering member 241 is in contact with the lower part of the bracket 242 shown in FIG. It is free.

  As shown in FIG. 31, a roller 230 is rotatably provided at the other end of the bending lever member 229 serving as a trigger lever member. A concave portion 220B is formed in a portion of the first slide member 220 facing the roller 230, and a portion of the concave portion 220B on the retreating side of the first slide member 220 is an inclined surface 220C.

  As shown in FIG. 31, the automatic closing device 132 is provided with a first electric switch 235, and this first electric switch 235 mounted on the machine casing 210 projects from the first electric switch 235 with a spring. And a swingable actuator 236 biased in the direction. Further, a projection member 237 is attached to the first slide member 220 at a portion opposite to the concave portion 220B, and the actuator 236 is in contact with the projection member 237.

  A connection member 238 having a connection portion 238A is attached to the first slide member 220. The other end of the third control wire 213 is connected to the connecting portion 238A, and the end of the second control wire 212 is connected to the upper part of the above-mentioned lifting member 241. (See also FIG. 28).

  As shown in FIG. 31, the automatic closing device 132 includes a spring 231 for applying a turning force to the bending lever member 229 in the direction of arrow K about the central axis 229A, and a second control wire 212. A spring 232 is provided for returning the falling member 241 to an upright state when the falling member 241 to which the end of the first member 241 is connected falls to the solenoid 226 side about the center axis 242A. Due to the spring force, the normal roller 230 provided at the other end of the bending lever member 229 fits into the concave portion 220B of the first slide member 220 as shown in FIG. It has become.

  Further, by the roller 230 being fitted into the concave portion 220B, the advance of the first slide member 220 by the above-mentioned spring 221 is stopped. The position of the front end of the first slide member 220 when the forward movement is stopped by the roller 230 fitted in the concave portion 220B is one of the three positions H, I, and J shown in FIGS. H position.

  The second control wire 212, the end of which is connected to the lifting member 241 and inserted into the outer cable 215, extends to the operating device 30 shown in FIG. 13 and protrudes from the outer cable 215. A manual operation member such as a lever member arranged on the operation device 30 is connected to an end of the second control wire 212. Further, a third control wire 213 whose end is connected to the first slide member 220 and which is inserted into the outer cable 216 also extends to the operation device 30, and the third control wire 213 protrudes from the outer cable 216. A manual operation member such as a lever member arranged on the operation device 30 is also connected to an end of the control wire 213.

  As can be understood from the above description, the automatic closing device 132 is configured by the first slide member 220 having the recess 220B formed therein, the solenoid 226, the bending lever member 229 including the roller 230, the first electric switch 235, and the like. The first slide member 220, which is a reciprocating member that can linearly reciprocate with respect to the machine frame 210, mechanically turns on the brake device 19 as described below. It is a switching member that operates to switch off.

  As shown in FIGS. 27 and 28, holes 210I and 210J are formed in the rising portion 210C of the machine casing 210 of the multifunction peripheral 200, and as shown in FIG. The plate-like third and fourth slide members 501 and 502 are slidably inserted into 210J. These slide members 501 and 502 whose bottoms are placed on the bottom 210F of the machine frame 210 are reciprocating members that can linearly reciprocate in the same direction as the first slide member 220 and the second slide member 310. ing.

  As shown in FIG. 27, between the third slide member 501 and the fourth slide member 502, a rotatable shaft 503A provided on the bottom 210F of the machine frame 210 is rotatable. The pinion gear 503 is disposed. A tooth portion 501A that meshes with the tooth portion 503B of the pinion gear 503 is formed in a portion on the pinion gear 503 side in a front portion of the third slide member 501 (in other words, a portion on the rising portion 210B side of the machine frame 210). Similarly, the front portion of the fourth slide member 502 (in other words, the portion on the rising portion 210B side of the machine frame 210) on the pinion gear 503 side meshes with the tooth portion 503B of the pinion gear 503. A tooth portion 502A is formed, and thus, the third and fourth slide members 501 and 502 are, in other words, first and second rack members 501 and 502.

  Therefore, when the third slide member 501 moves forward, the fourth slide member 502 moves backward, and when the third slide member 501 moves backward, the fourth slide member 502 moves forward.

  As can be seen from FIG. 27 and FIG. 28, a horizontal portion 504 </ b> A extending horizontally from the surface of the third slide member 501 on the side opposite to the side on which the tooth portions 501 </ b> A are formed, A plate-shaped bending member 504 including a hanging portion 504B hanging down from a tip portion of the horizontal portion 504A is attached. The hanging portion 504B of the bending member 504 is provided with a control wire 81 extending from the fire detection device 39. One end 81A is locked. A spring 507 whose one end is locked by a pin 506 provided at an intermediate portion in the longitudinal direction of the third slide member 501 is wound around the outer periphery of the rear part of the third slide member 501. The other end of 507 is in contact with the rising portion 210C of the machine casing 210.

  On the other hand, the end of the fourth slide member 502 (in other words, the end on the side of the rising portion 210B of the machine casing 210) on the surface opposite to the surface on which the tooth portion 502A is formed is provided with the fourth slide member 502. A plate-like protruding piece member 505 that protrudes in a direction orthogonal to the sliding direction of the slide member 502 and toward the tip member 240 is attached.

  In the normal state where the fire detection device 39 is in the state shown in FIG. 3 (the state in which the fire detection device 39 is not operating), the third and fourth slide members 501 and 502 of the automatic closing device 132 are in the state shown in FIG. Is in the state shown in FIG.

  The third slide member 501 is pulled by the control wire 81 to which the tension is applied, and the spring 507 wound around the third slide member 501 has a return spring force. Accumulated. For this reason, the third slide member 501 is urged by the spring 507 in the forward direction.

  On the other hand, the fourth slide member 502 is in a state in which the protruding piece member 505 attached to the distal end of the fourth slide member 502 is in contact with the distal end member 240.

  Next, the intermediate device 300 shown in FIG. 30 will be described.

  As shown in FIG. 30, the machine frame 210 of the multifunction device 200 has a first rotating member 301 rotatable about a central axis 301A and a first rotating member 301 rotatable about a central axis 302A. A second turning member 302 is provided, and these turning members 201 and 202 turn in the horizontal direction. The lower ends of the center shafts 301A and 302A are supported by the bottom 210F of the machine frame 210, and the upper ends of the center shafts 301A and 302A are supported by brackets 303 connected to the machine frame 210, as shown in FIG. Have been. As shown in FIG. 30, the first rotating member 301 is horizontally provided with a fan-shaped portion 301B having a fan shape centered on the central axis 301A. Of these, the portion inserted into the machine casing 210 is in a state of being wound on the outer peripheral surface of the fan-shaped portion 301B so as to be contactable and separable, and the end of the first control wire 211 is connected The member 304 is connected to the first rotating member 301.

  In the present embodiment, as shown in FIG. 30, the extending direction of the first control wire 211 extending from the fan-shaped portion 301B to the outside of the machine casing 210 is different from the tangential direction of the fan-shaped portion 301B. Match or almost match.

  A cam portion 301C having a circumferential length about the center axis 301A is formed horizontally below the fan-shaped portion 301B on the first rotating member 301, and the fan-shaped portion is formed. The outer peripheral surface of the cam portion 301C, which has a longer projecting length in the radial direction from the central axis 301A than the central axis 301B, is an arc-shaped surface centered on the central axis 301A. A coil portion of a torsion coil spring 305 is wound around the outer periphery of the central shaft 301A. One end of the spring 305 is locked by a locking member 306 attached to the machine frame 210, and The end is locked by a convex portion 301E provided on the first rotating member 301. Therefore, the first rotating member 301 is constantly biased by a spring 305 in the direction of arrow B in FIG. 30 around the central axis 301A, and the first rotating member 301 rotates in the direction of arrow B. The limit of movement is defined by a stop member 307 that is attached to the machine casing 210 and abuts one side surface of the cam portion 301C.

  The second rotating member 302 is provided with a fan-shaped portion 302B having a center axis 302A as a center. The fan-shaped portion 302B is a part of a protruding portion 202C that is horizontally formed so as to protrude from the center axis 302A. The protrusion 308 is provided on the upper surface of the protrusion 202C. The protrusion 308 in the present embodiment is a rotatable roller such as a roller bearing. The side surface 301 </ b> D of the cam portion 301 </ b> C of the first rotating member 301 contacts the convex portion 308. Therefore, the side surface 301D, in other words, the side surface 301D opposite to the side surface of the cam portion 301C of the first rotating member 301 that is in contact with the stop member 307 is the first rotating member 301. And the convex portion 308 is a contact portion of the second rotating member 302 that is in contact with the first rotating member 301. ing.

  As shown in FIG. 27, holes 210G and 210H are formed in two rising portions 210B and 210C of the machine casing 210 of the multifunction device 200, and two rising portions are formed in these holes 210G and 210H. A plate-shaped second slide member 310 of FIG. 30 having a length extending over 210B and 210C is slidably inserted. The second slide member 310 is a reciprocating member that can linearly reciprocate in the same direction as the first slide member 220. An opening 310A is formed in the second slide member 310, and a projection 311 provided on the lower surface of the protrusion 202C of the second rotating member 302 is inserted into the opening 310A. The protrusion 311 in the present embodiment is a rotatable roller such as a roller bearing.

  Further, a biasing force in the forward direction is applied to the second slide member 310 by a spring force of a spring 312 provided between the machine frame 210 and the second slide member 310, and the forward direction is determined by the forward direction. This is the same direction as the forward direction of one slide member 220. When the second slide member 310 advances, the protrusion 311 of the second rotation member 302 comes into contact with the end of the opening 310A, and the protrusion 308 of the second rotation member 302 moves to the first rotation member 301. The side surface of the cam portion 301 </ b> C opposite to the side surface 301 </ b> D abuts against the stop member 307.

  As shown in FIG. 28, the second slide member 310, which is a component of the intermediate device 300, is at a higher position than the first slide member 220, which is a component of the automatic closing device 132. , Are arranged in the machine frame 210. Also, as shown in FIG. 30, the second slide member 310 has a first and a second slide member with respect to the connection portion 238A of the connection member 238 provided on the first slide member 220. On the forward side of the slide members 220 and 310, there is provided a step surface 310B formed to face the slide members 220 and 310 in the forward and backward directions. As shown in FIG. 28, the connecting portion 238A has a length extending upward, and the connecting portion 238A and the step surface 310B are in the normal state shown in FIG. 30 and FIG. The second slide members 220 and 310 face each other with a large gap in the moving direction. Then, as shown in FIGS. 32A and 32B, after the first slide member 220 advances, the connecting portion 238A abuts on the step surface 310B or faces the step surface 310B with a slight gap. As shown in FIG. 33), when the second slide member 310 is retracted, the first slide member 220 is also retracted as shown in FIG. 33B by the pressing action of the connecting portion 238A by the step surface 310B. .

  As can be seen from the above description, the intermediate device 300 serving as a connecting device for directly connecting the first control wire 211 and the automatic closing device 132 described above includes the first rotating member 301 and the second rotating device 301. It comprises a moving member 302, a second sliding member 310 and the like, and the first rotating member 301 of the first rotating member 301 and the second rotating member 302 is a first control member which is a string-shaped member. The second rotating member 302 is a member on the side of the first slide member 220 which is the above-described switching member of the automatic closing device 132, while being a member on the side of the use wire 211. In addition, the first rotation member 301 is a rotation-type contact member because the side surface 301D is in contact with the protrusion 308 of the second rotation member 302, and the second rotation member 301 is the second rotation member. The rotating member 302 is also a rotating contacted member that the contact member contacts.

  As described above, the second rotating member 302 is provided with the fan-shaped portion 302B centered on the center axis 302A, and as shown in FIG. Has a large number of teeth 302D. A pinion gear 300B connected to the rotatable center shaft 400A of the delay device 400 described above meshes with these tooth portions 302D. The delay device 400 is a rotary damper. Inside the delay device 400, a plurality of blades connected to the central shaft 400A via a one-way clutch are attached, and the second rotating member 302 is When the pinion gear 300B and the central shaft 400A rotate in the direction of the arrow D around the center 302A in the direction of the arrow F, the respective blades are filled in the delay device 400 by the connecting action of the one-way clutch. Rotate in a viscous fluid. Therefore, the second rotating member 302 rotates at a low speed in the arrow F direction due to the resistance force of the viscous fluid. On the other hand, when the second rotating member 302 rotates in the direction of arrow G opposite to the direction of arrow F, and the pinion gear 300B and the center shaft 400A rotate in the direction of arrow E, the rotation in this direction is a one-way clutch. Are not transmitted to the respective blades due to the cutting action. Therefore, the second rotation member 302 can rotate at high speed in the direction of arrow G.

  Note that the delay device 400 that operates as described above is mounted on the lower surface of the bracket 303 described above as shown in FIGS. Have been.

  Also, as shown in FIG. 30, a second electric switch 320 is attached to the machine casing 210, and the second electric switch 320 is urged by a spring in a direction to protrude from the second electric switch 320. The actuator 321 that can swing. Further, a projection member 322 is provided on the first rotating member 301, and the actuator 321 is in contact with the projection member 322.

  Next, an operation of the shutter device after the repair according to the present embodiment will be described.

  In a building in which the shutter device after repair according to the present embodiment is installed, when the shutter curtain 1 is stopped at the fully open position or at a position halfway in the opening and closing movement direction, when a fire occurs, the case of the shutter device before repair is Similarly, since the thermal fuse 40 of the fire detecting device 39 is blown, the tension acting on the control wire 81 disappears.

  Therefore, the third slide member 501 moves forward in the direction of arrow P shown in FIG. 31 by the return spring force accumulated in the spring 507 wound around the third slide member 501. As a result, the pinion gear 503 rotates in the direction of arrow Q, and the fourth slide member 502 retreats in the direction of arrow R. As a result, the tip member 240 is pressed in the direction of arrow R by the protruding piece member 505 of the fourth slide member 502 that is in contact with the tip member 240, and the tip member 240 and the plunger 227 are retracted.

  As a result, the bending lever member 229 is turned around the central axis 229A in the direction of the arrow L in FIG. 31 through the tip member 240 by the pressing force from the protruding piece member 505 of the fourth slide member 502. The roller 230 of the lever member 229 escapes from the recess 220 </ b> B of the first slide member 220, and the first slide member 220 moves forward by the spring force of the spring 221. This forward movement is stopped when the front end of the connecting member 238 provided on the first slide member 220 comes into contact with the above-described rising portion 210B of the machine frame 210. That is, the connecting member 238 of the present embodiment also serves as a forward limit defining portion of the first slide member 220 for defining the forward limit of the first slide member 220.

  Further, at this time, the position of the front end of the first slide member 220 is the most front position among the three positions H, I, and J shown in FIGS. 27 and 31 as shown in FIG. This is the position I, which is the position.

  When the first slide member 220 moves forward as described above, the actuator 236 of the first electric switch 235 comes off the projection member 237 attached to the first slide member 220. The generated signal is transmitted to an external disaster prevention system (not shown). As a result, when the fire occurs, the automatic closing device 132 is operated, and the outside that the shutter curtain 1 starts closing and moving is notified.

  The state shown in FIG. 32B is maintained for the third and fourth slide members 501 and 502.

  When the first slide member 220 moves forward as described above, the operating member 222 of FIG. 15 provided at the front end of the first slide member 220 is connected to the lever member 31 of the switchgear 13 via the operated member 86. The first portion 31A is pressed in the direction of arrow A in FIG. For this reason, as described above, the first portion 31A swings in the direction of arrow A about the second bent portion 31D of the lever member 31 as a fulcrum, so that the brake shaft 21 of the brake device 19 of the switchgear 13 and the second The brake member 22 slides in the direction of arrow A ', which is the same direction as the direction of arrow A, whereby the brake device 19 that has been on until then turns off. For this reason, the shutter curtain 1 which has been stopped at a position halfway in the fully opened or opened and closed movement direction rotates the above-described winding shaft 11 by its own weight of the seat plate 1B 'and the like below the winding shaft 11. As a result, the drive shaft 14 of the switch 13 also rotates freely via the drive force transmitting means 12 and the shutter curtain 1 is fully closed, so that the disaster prevention section by the shutter curtain 1 is opened. Will be formed.

  When a person discovers that a disaster such as a fire has occurred, the person is placed on the operating device 30 shown in FIG. 13 and connected to the end of the second control wire 212 described above. The second control wire 212 is pulled by a manually operated member such as a lever member. Since the other end of the second control wire 212 is connected to the above-mentioned raising / lowering member 241 as described with reference to FIG. 31, the second control wire 212 is pulled up by the pulling operation. The falling member 241 falls about the center axis 242A toward the solenoid 226 and turns, and the tip member 240 and the plunger 227 retreat by the pressing action of the rising member 241. Thus, even before the fire detection is detected by the fire detection device 39, the bending lever member 229 pushes the push-down member 241 in the same manner as when the fire detection is detected by the fire detection device 39. 31. The roller 230 of the bending lever member 229 escapes from the concave portion 220B of the first slide member 220 to rotate in the direction of arrow L in FIG. The member 220 advances by the spring force of the spring 221.

  For this reason, the shutter curtain 1 is also fully closed by operating a manual operation member such as a lever member connected to the end of the second control wire 212, and the shutter curtain 1 forms a disaster prevention section. Can be.

  Even if the second control wire 212 is pulled, the third and fourth slide members 501 and 502, the pinion gear 503, and the control wire 81 remain in the state shown in FIG. In other words, even if the raising / lowering member 241 falls to the side of the solenoid 226 about the central axis 242A by the pulling operation of the second control wire 212, the third and fourth slide members 501 and 502 are provided. , The pinion gear 503 and the control wire 81 are not affected by the raising / lowering member 241 and remain inactive.

  When the first slide member 220 moves to the forward limit as described above, the connection portion 238A provided on the connection member 238 of the first slide member 220 is as shown in FIG. Then, the second slide member 310 comes into contact with or approaches the above-mentioned step surface 310B. For this reason, even if the first slide member 220 moves to the forward limit shown in FIG. 32B, the second slide member 310 moves to the position shown in FIG. 30 as shown in FIG. It has been stopped. Therefore, the second slide member 310 is configured as a constituent member, and the intermediate device 300 shown in FIG. 32A maintains the same state as that in FIG.

  As described above, the occurrence of a fire is sensed (in other words, detected) by the fire detection device 39, or a person who discovers the occurrence of the fire pulls the second control wire 212, thereby causing the shutter curtain 1 to move. When the shutter device moves to the fully closed position to form the disaster prevention section, the shutter device according to the present embodiment is the above-described disaster prevention shutter device. On the other hand, as described above, in the present embodiment, the opening and closing movement and the movement stop of the shutter curtain 1 are performed by operating the “open”, “close”, and “stop” buttons of the operation device 30. This is when such a shutter device is the management shutter device described above.

  When the shutter device according to the present embodiment functions as a disaster prevention shutter device and the shutter curtain 1 is closing and moving, in other words, the automatic closing device 132 is in the state shown in FIG. Are in the state shown in FIG. 32A, respectively, and when the shutter curtain 1 is moving closed, the obstacle 34 shown in FIG. 13 exists below the shutter curtain 1 in the closing movement direction. When the shutter curtain 1 is closed, the curtain sub-part 171 </ b> B disposed at the front end of the shutter curtain 1 on the closing side during the closing movement of the shutter curtain 1, in other words, the lower side of the seat plate 1 </ b> B ′ of the shutter curtain 1 The movable portion 170B of FIG. 16 forming the portion comes into contact with the obstacle 34, and the lowering of the movable portion 170B stops.

  Even if the lowering of the movable portion 170B stops, the above-described curtain main portion 171A formed of the curtain main body 1A and the fixed portion 170A of FIG. 16 in the seat plate 1B 'descends from the state of FIG. Due to the relative rise of the curtain sub-portion 171B (movable portion 170B) with respect to the curtain main portion 171A caused by this lowering, the swing member 181 disposed inside the fixed portion 170A as shown in FIG. Swings upward about the fulcrum shaft 180. Thereby, the lock member 150 constituting the mechanical coupling device 155 described above is rotated by the pressing member 154 provided on the swinging member 181 in the direction of arrow N in FIG. The teeth 153 of the lock member 150 are engaged with the teeth 135A of the rotating member 135.

  As a result, the rotating member 135 and the take-up reel 137 that have been rotating in the direction of the arrow S in FIG. 20 when the shutter curtain 1 is moving closed cannot rotate in the direction of the arrow S. The take-up reel 137 becomes unrotatable, and the shutter curtain 1 and the lock wire 136 that has been unwound from the take-up reel 137 are connected by a mechanical connection device 155 having the rotation member 135 and the lock member 150 as constituent elements. It will be. Therefore, a downward tension acts on the lock wire 136 due to the weight of the shutter curtain 1 excluding the movable portion 170B, that is, the weight of the curtain main portion 171A.

  After the shutter curtain 1 that is closing and moving comes into contact with the obstacle 34 as described above, and a downward tension is applied to the lock wire 136 due to the weight of the shutter curtain 1 excluding the movable portion 170B. When the obstacle 34 is dented, the locking wire 136 connected to the shutter curtain 1 by the mechanical coupling device 155 is pulled downward by the amount of the dented deformation.

  Further, even if the obstacle 34 is a hard one that does not deform or hardly dents, when the lock member 150 is rotated in the direction of the arrow N in FIG. 20 by the pressing member 154 of the swinging member 181, as shown in FIG. As described above, among the first tooth portion 153A, the second tooth portion 153B, and the third tooth portion 153C provided as the tooth portion 153 in the lock member 150, first, the first tooth portion 153A is the tooth of the rotating member 135. The second tooth portion 153B and the third tooth portion 153C are engaged with the tooth portion 135A of the rotating member 135. Among these engagements, at least the engagement of the first tooth portion 153A with the tooth portion 135A is performed by locking the lock member 150 away from the lock member 150 in the longitudinal direction, as shown in FIG. Of the first lock member side contact portion 159A and the second lock member side contact portion 159B provided as two member side contact portions 159, the shaft 156 serving as the rotation center axis of the lock member 150 is used. This is performed by pushing up the first lock member side contact portion 159 </ b> A at a distant location by the pressing member 154 serving as the shutter curtain side contact portion 158.

  The distance between the first teeth 153A, the second teeth 153B, and the third teeth 153C is the same as the distance (teeth pitch) between the teeth 135A formed on the rotating member 135 at equal intervals. Alternatively, the dimension is substantially the same, or a dimension that is an integral multiple of two or more of the interval dimension between the teeth 135A, or a dimension that is approximately an integral multiple. Therefore, when the first tooth portion 153A is engaged with the tooth portion 135A, the second tooth portion 153B and the third tooth portion 153C are also engaged with the tooth portion 135A.

  When the first lock member side contact portion 159A is pushed up by the pressing member 154 as described above, then, as shown in FIG. 21, the second lock member side contact portion 159B of the lock member 150. Comes into contact with the pressing member 154, and the second lock member side contact portion 159B is pushed up. That is, the pushing-up of the lock member-side contact portion 159 of the lock member 150 by the pressing member 154 shifts from the first lock member-side contact portion 159A to the second lock member-side contact portion 159B, and is performed in two steps. This push-up is performed.

  Therefore, the rotation of the lock member 150 in the direction of arrow N shown in FIG. 20 is continued in two stages, whereby the first tooth 153A of the lock member 150 is Even if the engagement with the teeth 135A of the rotary member 135 is released, the second teeth 153B and the third teeth 153C continue to engage with the teeth 135A of the rotating member 135, and the second teeth 153B and the third teeth 153B. The three-tooth portion 153C slightly rotates the rotating member 135 in the direction of arrow T in FIG. The rotation in the direction of arrow T is a rotation in a direction in which the take-up reel 137 winds up the lock wire 136, and is a direction in which the lock wire 136 is pulled downward.

  The rotation of the rotation member 135 in the direction of arrow T by the second tooth portion 153B and the third tooth portion 153C in this manner means that the distance from the shaft 156 that is the center of rotation of the lock member 150 is the first distance. Since the second lock member side contact portion 159B, which is shorter than the lock member side contact portion 159A, is pushed up by the pressing member 154, the arrow T of the rotating member 135 by the second tooth portion 153B and the third tooth portion 153C. The amount of rotation in the direction increases. Therefore, even when the amount of relative movement of the curtain sub-part 171B with respect to the curtain main part 171A when the shutter curtain 1 in the closing movement comes into contact with the obstacle 34 is constant, the obstacle 34 is dented and deformed. Similarly, the amount of downward pulling of the lock wire 136 can be sufficiently ensured.

  For this reason, even when the obstacle 34 is hard and hardly dents or deforms, the lock wire 136 connected to the shutter curtain 1 by the mechanical coupling device 155 is not used when the obstacle 34 dents or deforms. Thus, it can be pulled downward sufficiently.

  In the present embodiment, the number of the teeth 153 provided on the lock member 150 is three, but the number may be four or more.

  Further, when the shutter curtain 1 comes into contact with the obstacle 34, the first lock member side contact portion 159A of the lock member 150 is pushed up by the pressing member 154 serving as the shutter curtain side contact portion 158 as described above, As a result, the first teeth 153A of the lock member 150 that rotates in the direction of arrow N about the shaft 156 in FIG. 20 try to engage with the teeth 135A of the rotation member 135. And the rotation timing of the rotation member 135, the tip of the first tooth portion 153A and the tip of the tooth portion 135A come into contact with each other, whereby the lock member 150 and the rotation member 135 are brought into abutting state, and these lock members are locked. The member 150 and the rotating member 135 may be in a so-called deadlock state.

  However, in the present embodiment, as described with reference to FIG. 25, the lock member 150 and the shaft 156 serving as the rotation center axis of the lock member 150 are rotated by the long holes 167 formed in the case 133 described above. It is movable toward and away from the member 135 and is constantly urged in the direction of the arrow X on the rotating member 135 side by the elastic urging force of the torsion coil spring 157 which is an elastic member. When the deadlock state occurs, the lock member 150 and the shaft 156 slightly move in the direction of retreating from the rotating member 135 due to the reaction force from the rotating member 135, and the deadlock state is resolved. The spring 157 advances toward the rotating member 135 due to the elastic urging force, so that the first tooth portion 153A of the lock member 150 continues to rotate. It will engage the teeth 135A of the member 135.

  For this reason, according to the present embodiment, the tip of the first tooth portion 153A of the lock member 150 and the tip of the tooth portion 135A of the rotation member 135 come into contact with each other, and the lock member 150 and the rotation member 135 are in a deadlock state. It is possible to avoid an excessive load generated on the lock member 150 and the like when the deadlock state occurs.

  Further, in the present embodiment, the above-mentioned first lock member side contact portion 159A provided on the lock member 150 is an elastic portion formed by the leaf spring 160, so that the above-described deadlock state occurs. The lock member 150 pivots slightly about the shaft 156 in the direction of arrow M in FIG. 20 and then in the direction of arrow N due to the elastic portion being elastically deformed by the reaction force from the rotating member 135. Therefore, the deadlock state can be eliminated by this as well.

  As described above, when the shutter curtain 1 during the closing movement abuts on the obstacle 34 and the locking wire 136 is pulled downward, the tension of the locking wire 136 is applied via the connecting member 194 shown in FIG. It acts on the first control wire 211, and the first control wire 211 is also pulled.

  When the first control wire 211 is pulled, the other end of the first control wire 211 is a component of the intermediate device 300 in the state of FIG. 32A as described above. Since the first rotating member 301 is connected to the first rotating member 301, the first rotating member 301 rotates in the direction of arrow C in FIG. The second rotating member 302 in which the convex portion 308 abuts on 301D rotates in the direction of arrow G in FIG. Thereby, the second slide member 310 in which the convex portion 311 of the second rotating member 302 is inserted into the opening 310A is pressed by the convex portion 311 as shown in FIG. , Retracts against the spring force of the spring 312.

  As a result, the second slide member 310 presses the connection portion 238A of the connection member 238 of the first slide member 220 by the step surface 310B. Therefore, the first slide member 220 also retreats. The above-described brake device 19 switches from off to on. Therefore, the shutter curtain 1 that has contacted the obstacle 34 in FIG. 13 during the closing movement stops the closing movement. The state of the automatic closing device 132 at this time is shown in FIG. 33B, and the position of the front end of the first slide member 220 at this time is the J position shown in FIG. 27 and FIG.

  Further, as described above, when the first control wire 211 is pulled, the stepped surface 310B of the retreating second slide member 310 presses the connecting portion 238A of the connecting member 238 of the first slide member 220, so that the Since the one slide member 220 is retracted, the step surface 310B is a pressing portion of the second slide member 310 for pressing the first slide member 220, and the connecting portion 238A is pressed by the second slide member 310. It is a pressed portion of the first slide member 220 for receiving pressure.

  In the above operation, when the second rotating member 302 rotates in the direction of arrow G in FIG. 30 as described above, the pinion gear 400B of the delay device 400 rotates in the direction of arrow E. When the pinion gear 400B rotates, the one-way clutch disconnection function of the delay device 400 functions as described above, so that the nonion gear 400B rotates at high speed in the direction of arrow E, and the second rotating member 302 also moves at high speed in the direction of arrow G. Can rotate. In other words, no delay effect occurs in the delay device 400 at this time.

  Further, as described above, when the first control wire 211 is pulled, the first turning member 301 turns in the direction of arrow C in FIG. 30 and the second turning member 302 turns in the direction of arrow G. At this time, since the movement performed by the first rotating member 301 and the second rotating member 302 is a rotating movement, even if the length of the first control wire 211 that is pulled is long, The entire rotation amount of the first rotation member 301 is not transmitted to the second rotation member 302.

  That is, in the present embodiment, as described above, the lock member 150 has three teeth 153A, 153B, and 153C in consideration of the case where the obstacle 34 is not dent-deformed or hard with small dent-deformation. Even if the length of the first control wire 211 pulled by the action of the tooth portions 153A, 153B, 153C is increased, the first rotation member out of the total rotation amount of the first rotation member 301 is provided. Only when the side surface 301D of the cam portion 301C of the member 301 is in contact with the projection 308 of the second rotating member 302, the rotation of the first rotating member 301 in the direction of arrow C is applied to the second rotating member 302. This is transmitted as the rotation of the second rotation member 302 in the direction of arrow G. After the side surface 301D of the cam portion 301C of the first rotating member 301 stops contacting the convex portion 308 of the second rotating member 302, even if the first rotating member 301 rotates in the direction of arrow C, This rotation is a so-called swinging rotation, and the second rotating member 302 is stopped when the first swinging member 301 performs the swinging rotation.

  For this reason, even if the length by which the first control wire 211 is pulled is long and the amount of rotation of the first rotating member 301 is large, the retreat distance of the first slide member 220 is not long, Thereby, when the shutter curtain 1 in the closing movement comes into contact with the obstacle 34, the position where the first slide member 220 retreats is indicated by the front end of the first slide member 220 in FIG. As shown in FIG. 27, of the three positions I, J, and H shown in FIGS. 27 and 31, the position reaches the J position. The J position is a position on the front side of the H position which is the initial position, and is a position where the brake device 19 can be mechanically switched from off to on by the first slide member 220, and is shown in FIG. The roller 230 of the bent lever member 229 is in a position maintaining the state in which the roller 230 escapes from the concave portion 220B of the first slide member 220 as in FIG. The fact that the state in which the roller 230 escapes from the concave portion 220B as described above is shown in FIG. 33B, which shows a state in which the shutter curtain 1 in the closing movement is in contact with the obstacle 34. ing.

  As can be understood from the above description, after the shutter curtain 1 starts to close and move due to the occurrence of a fire or the like, the shutter device according to the present embodiment is installed due to a fire or the like or for other reasons. Even if the building loses power, the first slide member 220 of the automatic closing device 132 switches the brake device 19 of the switchgear 13 from off to on when the shutter curtain 1 comes into contact with the obstacle 34 during the closing movement. Thus, the shutter curtain 1 can be mechanically stopped without using electricity.

  As described above, when the above-described brake device 19 is switched from off to on, and the obstacle 34 is removed after the shutter curtain 1 in the closing movement is stopped, the curtain sub part 171B of the shutter curtain 1 is moved. Since the shutter curtain 1 descends, the connection between the shutter curtain 1 and the locking wire 136 by the mechanical coupling device 155 is released. As a result, the tension acting on the lock wire 136 and the first control wire 211 disappears, so that the first rotating member 301 rotates in the direction of arrow B in FIG. The second rotating member 302 is rotated in the direction of arrow F in FIG. 30 by the advance of the second slide member 310 by the spring 312, and the first slide member of the automatic closing device 132 is moved by the advance of the second slide member 310. The slide member 220 advances by the spring force of the spring 221 such that the position of the front end shifts from the J position in FIG. 33 (B) to the I position shown in FIGS. 27 and 31. Therefore, the brake device 19 of the switch 13 is mechanically switched from ON to OFF again, and the shutter curtain 1 closes and resumes the movement.

  Also, at this time, the second rotating member 302 rotates in the direction of arrow F in FIG. 30, so that the nonion gear 400B of the delay device 400 rotates in the direction of arrow D, and the rotation of the nonion gear 400B in the direction of arrow D. As described above, in the delay device 400 which is a rotary damper, a resistance force due to a viscous fluid is generated. For this reason, the position of the front end of the first slide member 220 shifts from the J position in FIG. 33 (B) to the I position in FIGS. 27 and 31, and by this shift, the brake device 19 of the switchgear 13 is turned on. The switching off is not instantaneous due to the delay effect of the delay device 400, and the switching timing is delayed. Therefore, the closing of the shutter curtain 1 and the resumption of the movement by the removal of the obstacle 34 is started with a time delay from the removal of the obstacle 34, so that the operation of removing the obstacle 34 can be performed with a sufficient time. It can be carried out.

  As described above, the distance that the first slide member 220 retreats when the shutter curtain 1 during the closing movement comes into contact with the obstacle 34 is a position where the front end of the first slide member 220 is located behind the J position. If the distance is long, the roller 230 of the bending lever member 229 will fit into the recess 220 </ b> B of the first slide member 220. When such a situation occurs, the first slide member 220 is moved by the brake device 19 by the stopper action of the roller 230 even if the obstacle 34 with which the shutter curtain 1 in the closing movement is in contact is removed. Cannot be advanced to reach the I position where the front end can be switched from on to off.

  That is, the operable range of the first slide member 220 of the automatic closing device 132 serving as a switching member for switching the brake device 19 on and off includes a range in which the brake device 19 cannot be switched from on to off. Will be.

  However, according to the present embodiment, as is apparent from the above description, the first rotating member 301 serving as the contact member on the side of the first control wire 211 and the first sliding member 220 of the automatic closing device 132 are used. The second rotating member 302, which is a member to be contacted on the side, is a member that rotates about the center shafts 301 </ b> A, 302 </ b> A. Only a part of the rotation amount is transmitted to the second rotation member 302. Therefore, the distance that the first slide member 220 retreats when the shutter curtain 1 in the closing movement comes into contact with the obstacle 34. Does not become a long distance where the front end of the first slide member 220 is located on the rear side of the J position. For this reason, the first slide member 220 can be stopped at the retreat distance where the position of the front end becomes the J position, and after the obstacle 34 with which the shutter curtain 1 in the closing movement is in contact is removed, It is possible to switch the brake device 19 from on to off.

  Therefore, according to the present embodiment, the first rotation member 301, the second rotation member 302, and the like constitute the operation range restricting means 330 that does not operate the first slide member 220 to the above-mentioned non-switchable range. Will be.

  In the present embodiment, the lock member 150, which is a component of the mechanical coupling device 155 shown in FIGS. 20 and 21, is provided with the teeth 153 of the lock member 150 as described with reference to FIG. Since the gap adjusting means 166 for adjusting the size of the gap 165 between the tip of the rotary member 135 and the tip of the tooth portion 135A of the rotating member 135 is provided, the shutter curtain 1 does not normally contact the obstacle. At times, the size of the gap 165 can be set to an appropriate value. Therefore, a problem that occurs when the size of the gap 165 is larger than an appropriate value, that is, when the shutter curtain 1 during the closing movement comes into contact with the obstacle 34, the tooth portion of the lock member 150 is immediately By not engaging the rotary member 135 with the teeth 135A of the rotating member 135, it is possible to solve the problem that it is difficult to stop the shutter curtain 1 instantaneously due to a delay in the detection of an obstacle. A problem that occurs when the size of the shutter member 165 is smaller than the appropriate value, that is, even when the shutter curtain 1 does not contact the obstacle 34, for example, when the rotating member 135 or the lock member 150 vibrates, The problem that the part 153 contacts or engages with the tooth part 135A can be solved.

  The above description has been made when the shutter device according to the present embodiment is the above-described disaster prevention shutter device. When this shutter device is the above-described management shutter device, that is, when the shutter curtain 1 is closing and moving by the operation of the operation device 30, the shutter curtain 1 has come into contact with the obstacle 34. At this time, since the tension or the pulling force acts on the first control wire 211, the first turning member 301 of the intermediate device 300 turns in the direction of arrow C in FIG. Although the second slide member 310 retreats via the two rotation members 302, the first slide member 220 at this time has retreated to the retreat limit in which the front end position is at the H position. As shown, there is a large gap between the step surface 310B of the second slide member 310 and the connection portion 238A of the connection member 238 of the first slide member 220, and as a result, Also de member 310 is retracted, the retraction does not affect the first slide member 220.

  In other words, when the shutter device according to the present embodiment is a management shutter device, the first slide member 220 is a constituent member even if the shutter curtain 1 in the closing movement is in contact with the obstacle 34. When the automatic closing device 132 is not activated, the automatic closing device 132 maintains the state shown in FIG.

  In the present embodiment, when the shutter device is the management shutter device, the shutter curtain 1 during the closing movement comes into contact with the obstacle and the tension or the pulling force of the first control wire 211 causes the intermediate movement. When the first rotation member 301 of the device 300 rotates in the direction of arrow C, the actuator 321 of the second electric switch 320 performs an operation of coming off the projection member 322 of the first rotation member 301. When the control device 26 of FIG. 13 electrically controls the electric motor device 18 and the brake device 19 of the switchgear 13 by a signal from the electric switch 320, the shutter curtain 1 is moved from the position where it comes into contact with the obstacle. A reversal climb is performed in which the robot moves to the predetermined height position and stops. That is, after the shutter curtain 1 of the management shutter device comes into contact with an obstacle, the shutter curtain 1 opens and moves to a height position distant from the obstacle and stops.

  Next, a method of repairing the shutter device shown in FIG. 1 (the shutter device before repair) to the shutter device shown in FIG. 13 (the shutter device after repair) will be described.

  First, among the devices and members constituting the shutter device shown in FIG. 1, the obstacle detection switch 35, the signal lines 36, 89 and 84, and the take-up reel which constitute the electric shutter curtain stopping device described above. 37, and the work of removing the automatic closing device 32 is performed.

  More specifically, the operation of removing the end of the signal line 36 fed from the take-up reel 37 on the side of the seat plate switch 35 from the seat plate switch 35 and the operation of the signal line 89 for connecting the take-up reel 37 and the control device 26 are performed. And the operation of removing the signal line 84 for connecting the control device 26 and the automatic closing device 32 from the control device 26 and the automatic closing device 32.

  Also, the operation of removing the end of the control wire 81 extending from the fire detection device 39 and connected to the micro switch 38 from the micro switch 38, and a signal line for connecting the micro switch 38 and the control device 26. The operation of removing 80 is performed.

  Thereafter, the operation of removing the seat plate switch 35 attached to the fixed portion of the seat plate 1B of the shutter curtain 1 from the main body 1A of the shutter curtain 1 together with the fixed portion and the movable portion of the seat plate 1B, and the take-up reel 37 The operation of removing the micro switch 38 from the lintel 16 and the operation of removing the automatic closing device 32 placed on the switch 13 from the switch 13 are performed.

  Thus, the first step included in the repair method according to the present embodiment ends.

  Next, an operation of attaching the composite device 200 having the automatic closing device 132 which is a mechanical control device constituting the mechanical shutter curtain stopping device according to the present embodiment, the mechanical coupling device 155, the direction changing device 138, and the like will be described. carry out.

  Specifically, first, the case 133 in which the mechanical coupling device 155 is disposed is mounted on the seat plate 1B 'designed and constructed for the mechanical coupling device 155. The operation of attaching the case 133 to the seat plate 1B 'may not be performed at the installation location of the shutter device but may be performed in a factory in advance. Thereafter, an operation of attaching the seat plate 1B ′ to which the case 133 is attached to the main body 1A of the shutter curtain 1 is performed.

  Before and after these operations, a work for attaching the direction changing device 138 to a position where the take-up reel 37 provided in the shutter device before the repair in the lintel 16 was disposed, and a process before the repair in the switchgear 13. An operation of attaching the multifunction device 200 to the position where the automatic closing device 32 provided in the shutter device was arranged is performed.

  Then, after the lock wire 136 extending from the mechanical coupling device 155 is passed through the direction changing device 138 shown in FIG. 26, the lower end of the first control wire 211 shown in FIG. An operation of connecting the upper end of the connecting wire 136 with the connecting member 194 shown in FIG. 26 is performed. This operation is, in other words, an operation of extending the lock wire 136 and the first control wire 211, which are string-shaped members, from the mechanical coupling device 155 to the automatic closing device 132.

  Also, the lower end of the second control wire 212 shown in FIG. 27 extending from the multifunction device 200 is extended to the operation device 30 shown in FIG. 13, and is connected to a manual operation member such as a lever member arranged in the operation device 30. Carry out work to do. Similarly, the lower end of the third control wire 213 shown in FIG. 27 extending from the multifunction device 200 also extends to the operating device 30 shown in FIG. 13, and a manual operating member such as a lever member arranged on the operating device 30 Perform the work to connect to.

  In addition, the control wire 81 extending from the fire detecting device 39 is extended to the multifunction device 200 shown in FIG. 27, and the upper end of the control wire 81 is suspended from the bent portion 504B of the bending member 504 of the third slide member 501 described above. Perform the work of locking the lock. Since the control wire 81 used in the shutter device before the renovation does not have a length up to the multifunction device 200, the control wire 81 is replaced with a control wire 81 having a length reaching the multifunction device 200. Either carry out the work of locking the upper end of the replaced control wire 81 to the hanging part 504B of the bending member 504 of the third slide member 501, or perform the work of locking the upper end of the control wire 81 used in the shutter device before the repair. Then, an extension wire of the same type as the control wire 81 is connected, and the upper end of the extension wire is engaged with the hanging portion 504B of the bending member 504 of the third slide member 501.

  Thereafter, adjustment and test work of each attached device are performed. In addition to performing inspection and repair work of the components and components of the fire detection device 39 installed before the repair, a part of the components and components of the fire detection device 39 (for example, the thermal fuse 40, The replacement work of the lever member 66, the control wire 81, etc.) is also performed as necessary. Furthermore, an operation test operation of the entire shutter device after the renovation will be performed.

  Thus, the second step included in the repair method according to the present embodiment ends.

  As described above, in the repair method according to the present embodiment, in the second step, the step of replacing the seat plate 1B, which is the portion of the shutter curtain 1 provided with the obstacle detection switch 35, with the seat plate 1B '. And a step of arranging the mechanical coupling device 155 on the seat plate 1B ', which is a part of the shutter curtain 1 replaced by the above step, which is performed after this step. As can be seen from FIG. 13, the position where the obstacle detection switch 35 is provided on the seat plate 1B before the repair is the same or substantially the same as the position where the mechanical coupling device 155 is provided on the seat plate 1B 'after the repair. It is the same.

  In the operation of replacing the seat plate 1B with the seat plate 1B ', the shutter curtain 1 of the shutter device before the renovation to which the seat plate 1B was attached was raised to a position where the seat plate 1B was separated from the floor 4. Thereafter, the seat plate 1B is separated from the curtain main body 1A by removing the couplings, and then both ends of the seat plate 1B are pulled out from the left and right guide rails 6 by, for example, making the seat plate 1B slant. Thereafter, both ends of the seat plate 1B 'are inserted into the left and right guide rails 6 by, for example, slanting the seat plate 1B', and the seat body 1B 'is connected to the curtain main body 1A with a connector. To The work of replacing the seat plate 1B with the seat plate 1B 'is performed by opening and moving the shutter curtain 1 of the shutter device before the renovation to which the seat plate 1B is attached to the fully open position, and then moving the shutter curtain 1 at both ends. May be extracted from the left and right guide rails 6 and then executed.

  As described above, in the present embodiment, the shutter device before the renovation includes the shutter curtain 1 that can be freely opened and closed, and the shutter device that is turned on and off to stop and move the shutter curtain 1. It is configured to include the brake device 19 and the thermal fuse 40, and the thermal fuse 40 is melted by the heat generated by the fire to detect the fire occurrence. When the shutter device 1 is turned off, the automatic closing device 32 for starting the closing movement of the shutter curtain 1 is turned off, and when the shutter curtain 1 contacts the obstacle 34 during the closing movement, And an electric shutter curtain stopping device for stopping the closing movement electrically.

  The shutter device modified by the method of modifying the shutter device according to the present embodiment, when the shutter curtain 1 abuts on the obstacle 34 during the closing movement in an emergency such as a fire or the like, causes the closing movement. Is provided with a mechanical shutter curtain stopping device for mechanically stopping the shutter.

  In the method of repairing the shutter device according to the present embodiment, a first step of performing an operation of removing the electric shutter curtain stopping device, and an operation of performing the operation of disposing the mechanical shutter curtain stopping device after the first step are performed. And the second step is performed, and the fire detecting device 39 is used as it is.

  Here, in repairing the shutter device having the electric shutter curtain stopping device to the shutter device having the mechanical shutter curtain stopping device, the fire detecting device 39 is also different from the one including the thermal fuse 40. If the fire detection device is modified (in other words, replaced) with a fire detection device of the type and structure described above, the cost required for the modification of the shutter device increases accordingly.

  However, in the present embodiment, when the shutter device having the electric shutter curtain stopping device is modified to the shutter device having the mechanical shutter curtain stopping device, the existing (in other words, the existing) fire detecting device is used for the fire detecting device. The fire detection device 39 is used as it is.

  For this reason, according to the present embodiment, compared with the case where the fire detection device 39 is modified to a fire detection device of another type and structure that is not configured to include the thermal fuse 40, The cost for renovation can be reduced.

  In the repair method of the shutter device according to the present embodiment, the seat plate 1B of the shutter curtain 1 before the repair is not replaced with the seat plate 1B ', and the mechanical coupling device 155 sets the seat of the shutter curtain 1 before the repair. It may be arranged on the plate 1B.

  In the present embodiment described above, the multifunction device 200 is added to the multifunction device 100 used in the shutter device disclosed in Japanese Patent Application Laid-Open No. 2014-001582 as a prior art document by the fire detection device 39. A member (third and fourth slide members 501 and 502, a pinion gear 503, a control wire 81, and the like) for advancing the second slide member 220 when a fire is detected is added.

  That is, the multifunction device 200 can directly use the multifunction device 100 (excluding the machine frame 210) used in the shutter device disclosed in Japanese Patent Application Laid-Open No. 2014-001582 cited as a prior art document. Therefore, the design cost of the multifunction device 200 can be reduced as compared with the case where the multifunction device 200 is redesigned from the beginning.

  Further, in the present embodiment, the multifunction device 100 (excluding the machine frame 210) used in the shutter device disclosed in Japanese Patent Application Laid-Open No. 2014-001582 cited as a prior art document is used as it is, The compound device 200 shown in FIG. 27 has the solenoid 226 as it is.

  For this reason, in the present embodiment, even if a failure occurs in the fire detection device 39 having the temperature fuse 40 and the fire detection device 39 cannot be used, the solenoid 226 is energized when a fire occurs and the shutter curtain is turned on. 1 can be started.

  That is, when a fire occurs when the shutter curtain 1 is stopped at the fully open position or at a position halfway in the opening and closing movement direction, a sensor (smoke detector, heat detector, or the like) that detects smoke or heat generated by the fire An automatic closing device shown in FIG. 31 is controlled by an electric circuit such as a relay circuit (not shown) to which a signal is input from the controller or a control device by a computer (this control device may also be used as the control device 26 in FIG. 13). The solenoid 226 of 132 is energized.

  As a result, the solenoid 226 is excited, and the plunger 227 of the solenoid 226 moves backward against the spring force of the spring 228. Thereby, the bending lever member 229 whose one end is in contact with the distal end member 240 is opposed to the arrow L in the direction opposite to the arrow K direction in FIG. 31 around the central axis 229A against the spring force of the spring 231. In this direction. The state at this time is shown in FIG. When the bending lever member 229 rotates about the central axis 229A in the direction of the arrow L, the roller 230 of the bending lever member 229 escapes from the concave portion 220B of the first slide member 220. It advances by force, and this advance stops when the front end of the connecting member 238 provided on the first slide member 220 comes into contact with the above-described rising portion 210B of the machine frame 210. The position of the front end of the first slide member 220 at this time is, as shown in FIG. 32B, of the three positions H, I, and J shown in FIGS. This is the position I, which is the position.

  As described above, when the first slide member 220 moves forward, the actuator 236 of the first electric switch (in other words, the micro switch) 235 is disengaged from the protrusion member 237 attached to the first slide member 220. In response to a signal generated from the one electric switch 235, the above-described control device stops energizing the solenoid 226.

  By stopping the power supply to the solenoid 226, the plunger 227 protrudes from the solenoid 226 by the spring force of the spring 228, and the bent lever member 229 moves in the direction of arrow K in FIG. Rotate. At this time, since the first slide member 220 has advanced to the movement limit where the front end of the first slide member 220 has reached the position I, the roller 230 of the bending lever member 229 is inclined by the inclination of the first slide member 220. The surface 220C is hit. Therefore, the rotation of the bending lever member 229 about the central axis 229A in the direction of the arrow K stops halfway.

  When the first slide member 220 moves forward as described above, the operating member 222 of FIG. 15 provided at the front end of the first slide member 220 is connected to the lever member 31 of the switchgear 13 via the operated member 86. The first portion 31A is pressed in the direction of arrow A in FIG. For this reason, as described above, the first portion 31A swings in the direction of arrow A about the second bent portion 31D of the lever member 31 as a fulcrum, so that the brake shaft 21 of the brake device 19 of the switchgear 13 and the second The brake member 22 slides in the direction of arrow A ', which is the same direction as the direction of arrow A, whereby the brake device 19 that has been on until then turns off. For this reason, the shutter curtain 1 which has been stopped at a position halfway in the fully opened or opened and closed movement direction rotates the above-described winding shaft 11 by its own weight of the seat plate 1B 'and the like below the winding shaft 11. As a result, the drive shaft 14 of the switch 13 also rotates freely via the drive force transmitting means 12 and the shutter curtain 1 is fully closed, so that the disaster prevention section by the shutter curtain 1 is opened. Will be formed.

  When the shutter curtain 1 reaches the fully closed position and the disaster such as a fire is resolved, a lever member or the like which is disposed on the operation device 30 and is connected to the end of the third control wire 213 is provided. The third control wire 213 is pulled by a manual operation member. Thus, since the third control wire 213 is connected to the connection portion 238A of the connection member 238 of the first slide member 220, the first slide member 220 is retracted against the spring force of the spring 221. become. For this reason, the first slide member 220 is retracted from the position shown in FIG. 32B to the initial position where the front end of the first slide member 220 is the H position in FIGS. 27 and 31. . Further, when the first slide member 220 returns to the initial position, the bending lever member 229 rotates in the direction K in FIG. 31 by the spring force of the spring 231 about the center axis 229A. The roller 230 fits into the recess 220 </ b> B of the first slide member 220, so that the first slide member 220 on which the spring force of the spring 221 is acting is positioned at the front end of the first slide member 220 at the H position. To reach and stop. As a result, the automatic closing device 132 returns to the initial state before a disaster such as a fire occurs.

  When the third control wire 213 is pulled by the manual operation member such as the lever member as described above, the connecting portion 238A of the connecting member 238 is brought into contact with the bracket 303 shown in FIG. Accordingly, when the third control wire 213 is pulled by an excessive operating force by a manual operating member such as a lever member, the excessive operating force acts on the connecting member 238 and the first slide member 220 by the bracket. At 303, it may be prevented.

  When the first slide member 220 returns to the initial position as described above, the brake shaft 21 and the second brake member 22 of the brake device 19 of the switchgear 13 are turned in the direction opposite to the direction of the arrow A 'by the spring 23 shown in FIG. , The brake device 19 returns from off to on. Thereafter, by operating the above-described “open” button provided on the operation device 30, the shutter curtain 1 opens and moves to the fully open position as described above.

  In addition, the order of each operation included in each of the first step and the second step that constitute the repair method according to the present embodiment described above is not limited to the order described above, and may be arbitrary. .

  Further, each work included in each of the first step and the second step constituting the repair method according to the present embodiment described above may be performed by one worker, and may be performed by a plurality of persons. It may be performed by an operator.

  In the present embodiment described above, the fire detection device 39 may use an existing fire detection device (in other words, the fire detection device 39 used in the shutter device before the repair) in the shutter device after the repair. However, in consideration of the fact that a part of the fire detecting device 39 deteriorates or ages, for example, the repair or adjustment work is not performed on the part of the fire detecting device 39, and any appropriate In a simple process, an operation of replacing with a new one may be performed. In particular, parts that are more important and more susceptible to deterioration than other parts and members that constitute the fire detection device 39, such as the components and members that constitute the fire detection device 39, such as the thermal fuse 40 and the lever member 66. In some cases, it is preferable to replace a member with a new one at the time of repair. In some cases, it is assumed that the function of the fire detecting device 39 by the temperature fuse 40 is basically not changed, and even if the entire fire detecting device 39 including the temperature fuse 40 and the lever member 66 is replaced with a new one. Good.

  In the embodiment described above, the shutter curtain 1 may be used as it is without replacement, except for the seat plate 1B and, if necessary, members in the vicinity thereof. Further, members having no or low relevance to the shutter curtain stopping device, such as the guide rail 6, the shutter case 8, and the winding shaft 11, may be used as they are without replacement. For example, because of the deterioration of the shutter curtain stopping device, the replacement work or the repair work of these members may be performed using the repair opportunity of the shutter curtain stopping device.

  That is, in the repair method according to the present embodiment described above, the curtain main body 1A of the shutter curtain 1, the guide rail 6, the shutter case 8, the winding shaft 11, and the like, which are the components and components of the shutter device, are existing. However, in the first step described above, the work of replacing the curtain body 1A of the shutter curtain 1, the guide rail 6, the shutter case 8, the winding shaft 11, and the like is performed as necessary. You may make it implement. When the curtain main body 1A, the guide rail 6, the shutter case 8, the winding shaft 11 and the like of the shutter curtain 1 are not replaced, the shutter curtain 1 may be mounted in the first step or the second step, or before or after these steps. Inspection, repair, and adjustment of the curtain main body 1A, the guide rail 6, the shutter case 8, the winding shaft 11, and the like are preferably performed.

  INDUSTRIAL APPLICABILITY The present invention is applicable to a management and disaster prevention combined use switching device or a disaster prevention exclusive switching device having a fire detection device having a temperature fuse and having a shutter curtain as an opening and closing body.

DESCRIPTION OF SYMBOLS 1 Shutter curtain which is an opening / closing body 2 Doorway which is an opening 16 Linage member which is an upper piece forming member which forms the upper side of an entrance / exit 19 Brake device 26 Control device 32 Automatic closing device 34 Obstacle 35 Obstacle sensing switch 36 Signal line 37 Take-up reel 39 Fire detector 40 Thermal fuse 132 Automatic closing device which is a mechanical control device 135 Rotating member 136 Locking wire which is the first cord-like member 138 Direction changing device 150 Locking member 155 Mechanical coupling device 171A Curtain main part 171B which is an opening / closing body main part Curtain sub part 194 which is an opening / closing body subpart 194 Connecting member 220 First sliding member which is a sliding member for switching the brake device on and off.

Claims (16)

It comprises an openable and closable opening / closing body, a brake device for stopping and enabling the movement of the opening / closing body by turning on and off, and a temperature fuse. A fire detection device for detecting the occurrence of the fire by melting with heat, and, based on the operation of the fire detection device, to turn off the brake device that has been on and to start the closing movement of the opening / closing body. Automatic closing device, when the opening and closing body abuts an obstacle in the middle of the closing movement, an electric opening and closing body stop device for electrically stopping this closing movement,
An opening / closing device including a mechanical opening / closing body stopping device for mechanically stopping the closing movement when the opening / closing body abuts on the obstacle during the closing movement in an emergency such as a fire. A method of repairing a switchgear for refurbishment,
A first step of performing an operation of removing the electric opening / closing body stopping device;
A second step performed after the first step and performing an operation of arranging the mechanical opening / closing body stopping device;
Only including,
The opening and closing device includes a control device for performing on / off switching control of the brake device, and the fire detection device includes the temperature fuse, a microswitch connected to the control device, and one end. A control wire connected to a microswitch and the other end connected to the immovable member via the thermal fuse, wherein the mechanical opening / closing body stopping device is configured to mechanically control the brake device. Comprising a mechanical control device for controlling, the distance from the stationary member to the mechanical control device is different from the distance from the stationary member to the micro switch,
The first step includes an operation of removing the automatic closing device, and an operation of removing the one end of the control wire from the microswitch,
In the second step, the operation of arranging the mechanical control device at or near the position where the automatic closing device was arranged, and the length of the control wire reaching from the immovable member to the mechanical control device. And a work of extending the control wire having the length from the immovable member to the mechanical control device. Method. 2. The method for repairing a switchgear according to claim 1, wherein the operation in which the control wire has the length replaces the existing control wire with another control wire having the length. 3. A method of connecting the other end of the control wire to the mechanical control device and connecting the other end to the immovable member. 2. The repair method for the switchgear according to claim 1, wherein the distance from the stationary member to the mechanical control device is longer than the distance from the stationary member to the microswitch, and the control wire. 3. The work having the length is to connect one end of an extension wire to the one end of the existing control wire, and then connect the other end of the extension wire to the machine. A method for repairing a switchgear, comprising performing an operation of connecting to a control device. The repair method of the switchgear according to any one of claims 1 to 3, wherein the immovable member is an upper side forming member that forms an upper side of an opening that is opened and closed by the opening and closing body. And the mechanical control device is disposed above the microswitch, wherein the mechanical control device is disposed on the upper side forming member. 5. The method for repairing an opening and closing device according to claim 1, wherein the mechanical control device is disposed between first and second rack members that are slidable and between these rack members. 6. And a pinion gear rotatable about a shaft portion, and a tooth portion meshing with a tooth portion of the pinion gear is formed in a portion of each rack member on a side facing the pinion gear. The one end of the another control wire is connected to the first rack member, and the first rack member is pulled by the control wire under tension. In addition, a return spring force is accumulated in a spring wound around the first rack member, and the control fuse is melted by the heat generated by the fire, thereby melting the control wire. The tension acting on the first rack member disappears, and the first rack member moves forward by the return spring force, whereby the second rack member retreats and the brake device switches from on to off. How to repair switchgear. The method for repairing a switching device according to any one of claims 1 to 5, wherein the control wire is inserted into an outer cable from the fire detection device to the mechanical control device. Equipment repair method. In the repair method of the switchgear according to any one of claims 1 to 6, a position of the mechanical control device in the width direction of the switch body is the same as or substantially equal to a position of the fire detection device in the width direction. A method for repairing a switchgear, which is the same. In renovation method of opening and closing device according to claim 1, wherein the mechanical closing member stop device, said machine械式controller, disposed in said opening and closing member, the closing member in the closed movement A mechanical coupling device that mechanically couples the opening / closing body and the string-shaped member by contacting the obstacle, and applies a tension to the string-shaped member by the weight of the opening / closing body. Wherein the string-like member extends from the mechanical coupling device to the mechanical control device. The method for repairing a switchgear according to claim 8 , wherein the first step includes a step of removing the automatic closing device, and the second step includes connecting the mechanical control device to the automatic closing device. And a step of arranging the mechanical coupling device in the opening / closing body, and a step of arranging the mechanical coupling device in the opening / closing body, and the step is performed after these steps. A method of repairing a switchgear, comprising: extending to a mechanical control device. In the repair method for an opening / closing device according to claim 8 or 9 , in the second step, the direction of the cord-shaped member extending from the mechanical coupling device in the opening movement direction of the opening / closing body is referred to as the opening movement direction. A method of repairing an opening / closing device, comprising a step of arranging a direction changing device for changing the direction of an angle to a position where the take-up reel is arranged or in the vicinity thereof. The repair method of the switchgear according to any one of claims 8 to 10 , wherein the string-shaped member is a first string-shaped member on the mechanical coupling device side and a second string-shaped member on the mechanical control device side. Wherein the first string-shaped member and the second string-shaped member are connected via a connecting member. The repair method for a switching device according to any one of claims 8 to 11 , wherein the opening / closing body is disposed on a main body of the opening / closing body and closer to the closing side of the opening / closing body than the main body of the opening / closing body. An opening / closing sub-portion that is movable to the closing side and the opening side of the opening / closing body with respect to the opening / closing body. And a lock member that operates when the opening / closing body sub-part contacts the obstacle and stops the rotation of the rotating member by this operation. Characteristic repair method of switchgear. In renovation method of opening and closing device according to any one of claims 1 to 12, wherein the electric opening and closing member stop device, said control device, the obstacle sensing switch actuated by said movable member is brought into contact with the obstacle And a signal line for connecting the obstacle detection switch and the control device. In renovation method of switchgear according to claim 13, wherein the obstacle sensing switch is disposed in the opening and closing member, the signal line is wound on the take-up reel disposed in said upper member, fed Removing the obstacle detection switch from the opening / closing body, removing the take-up reel from the upper side forming member, and disconnecting the signal line from the obstacle detection switch and the control device. A method for repairing a switchgear, comprising a step of removing. 15. The method for repairing a switchgear according to claim 14 , wherein the second step is a step of replacing a part of the switch body provided with the obstacle sensing switch, and is performed after the step. Arranging the mechanical coupling device in a portion of the opening and closing body replaced by the step. In the method for repairing a switchgear according to any one of claims 1 to 15 , the switchgear before repair is a switchgear combined with management and disaster prevention, and the switchgear after repair is also a switchgear combined with management and disaster reduction. A method for repairing a switchgear, characterized by being a device.

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