JP4754233B2 - Opening and closing device with brake means - Google Patents

Description

  The present invention relates to an opening / closing device provided with a brake means for braking one of an opening movement and a closing movement of an opening / closing body, for example, a disaster prevention shutter device that forms a disaster prevention section with a shutter curtain, an entrance / exit, and the like The present invention can be used for various shutter devices including an opening shutter device that opens and closes an opening of the door with a shutter curtain, various door devices including a fire door device, and the like.

The disaster prevention shutter device and the opening shutter device include a shutter curtain that is an openable and closable body. Patent Document 1 below relating to a disaster prevention shutter device includes a member that moves when the shutter curtain moves up and down, specifically a winding shaft that opens and closes the shutter curtain by winding and unwinding the shutter curtain. 1 shows a shutter device to which a brake means is connected via a mechanical clutch device. When the take-up shaft rotates to extend the shutter curtain in order to close and move the shutter curtain downward in the event of a fire, the clutch device connects the take-up shaft and the brake means, so that the shutter curtain is braked. Moved to close. On the other hand, when the take-up shaft rotates to wind up the shutter curtain in order for the evacuees to open and move the shutter curtain upward, the clutch device separates the take-up shaft from the brake means. Thus, the shutter curtain opens and moves without being braked.
JP 2003-310777 (paragraph numbers 0031, 0032, 003 6, 0039, FIGS. 1 and 6)

  In this prior art, a mechanical clutch device is used for connecting the winding shaft and the brake means when the shutter curtain is closed and moving, and for separating the winding shaft and the brake means when the shutter curtain is opened and moved. For this reason, the shutter device is structurally complicated.

  An object of the present invention is to provide an opening / closing device with a brake means which can be simplified more structurally even if a brake means for braking one of the opening movement and the closing movement of the opening / closing body is provided. The device is on offer.

  The opening / closing apparatus with brake means according to the first aspect of the present invention is the opening / closing apparatus with brake means provided with braking means for braking one of the opening movement and closing movement of the opening / closing body which can be opened and closed. Is provided on at least one surface of the front and back surfaces of the opening / closing body, and includes contact / separation means for connecting and separating the one surface and the other surface of the opening / closing body. The separating means connects the one surface of the opening / closing body to the other surface when the opening / closing body moves the other of the opening movement and the closing movement, and the opening / closing body moves the one movement When performing the operation, the one surface and the other surface of the open / close body connected to each other are separated.

  In this opening / closing device with brake means, the brake means is provided on at least one of the front and back surfaces of the opening / closing body, and the contacting / separating means for connecting and separating the one surface and the other surface of the opening / closing body. This contact / separation means connects the one surface of the opening / closing body with the other surface when the opening / closing body moves in the other of the closing movement and the opening movement, and the opening / closing body opens. When one of the movement and the closing movement is performed, the one surface of the connected opening / closing body and the other surface are separated from each other. The braking is performed by the connection force between the one surface and the other surface. That is, the moving speed when the opening / closing body moves in one side is decelerated by the connecting force between the one surface of the opening / closing body and the other surface by the contact / separation means. For this reason, according to the first aspect of the present invention, the opening / closing device with brake means can be constructed with a simplified structure.

  Here, the contacting / separating means may be extended to the opening / closing body or may be provided so as to be dispersed in the opening / closing body. When extending the contact / separation means to the opening / closing body, the direction of extending the contact / separation means to the opening / closing body may be the opening / closing movement direction of the opening / closing body, or may be oblique to the opening / closing movement direction of the opening / closing body. In order to make it easier to brake the opening / closing movement of the opening / closing body in the opening / closing movement direction, the contact / separation means is moved to open / close the opening / closing body. It is more preferable to extend in the direction including the component in the direction.

  Further, the position where the contact / separation means is extended to the opening / closing body is arbitrary, and as a first example, the opening / closing body is in a state where the opening / closing body reaches the other movement limit of the opening movement and the closing movement. Of the portion where the one surface and the other surface overlap, the portion where the one surface and the other surface are separated by moving the one side until the opening / closing body reaches the one movement limit. The thing which extends the contact / separation means to all can be mentioned. This example is effective when, for example, braking is applied to the one movement of the opening / closing body immediately after the opening / closing body starts the one movement until the opening / closing body reaches the one movement limit. .

  As a second example, in a state where the opening / closing body reaches the other movement limit of the opening movement and the closing movement, the opening / closing of the part where the one surface of the opening / closing body overlaps the other surface The one movement until the body reaches the one movement limit is separated from the end in the one movement direction of the opening / closing body at a portion where the one surface and the other surface are separated from each other. An example in which the contact / separation means is extended from a location to a location spaced from the end in the other moving direction of the opening / closing body can be given. In this example, for example, from the time when the opening / closing body starts the one movement and reaches a certain moving speed to the middle of the opening / closing body reaching the one movement limit, This is effective when braking.

  As a third example, in the state where the opening / closing body reaches the other movement limit of the opening movement and the closing movement, the opening / closing of the part where the one surface of the opening / closing body overlaps the other surface By moving the one side until the body reaches the one movement limit, the other side of the opening / closing body from the end in the one moving direction of the opening / closing body at a portion where the one surface and the other surface are separated from each other The thing which extends the contact / separation means to the place which is separated with respect to the edge part of a moving direction can be mentioned. This example is effective when, for example, braking is applied to the one movement of the opening / closing body immediately after the opening / closing body starts the one movement until the middle of the opening / closing body reaching the one movement limit. is there.

  As a fourth example, in the state where the opening / closing body reaches the other movement limit of the opening movement and the closing movement, the opening / closing of the portion where the one surface of the opening / closing body overlaps the other surface The one movement until the body reaches the one movement limit is separated from the end in the one movement direction of the opening / closing body at a portion where the one surface and the other surface are separated from each other. An example in which the contact / separation means is extended from the position to the end of the other moving direction of the opening / closing body can be mentioned. In this example, for example, the movement of the opening / closing body from the time when the opening / closing body reaches the one movement limit until the opening / closing body reaches the one movement limit after the opening of the opening / closing body reaches a certain moving speed. This is effective when braking.

  When the contact / separation means is extended in the direction including the component in the opening / closing movement direction of the opening / closing body, the width dimension in the direction perpendicular to the opening / closing movement direction of the opening / closing body of the opening / closing means (hereinafter referred to as width dimension) is It may be always the same in one moving direction of the body, may be gradually reduced in one moving direction of the opening / closing body, and may be gradually increased in one moving direction of the opening / closing body. May be. By gradually reducing the width dimension of the contact / separation means toward one movement direction of the opening / closing body, the braking force for one movement of the opening / closing body can be gradually increased. On the other hand, by gradually increasing the width dimension of the contact / separation means in the one moving direction of the opening / closing body, the braking force for one movement of the opening / closing body can be gradually reduced.

  The number of contact / separation means provided on the opening / closing body is arbitrary, and may be one or more. In the case where a single contact / separation means is provided on the opening / closing body, for example, in order to store the opening / closing body in a more uniform state when the opening / closing body is closed and moved, for example, It is more preferable to extend in an oblique direction with respect to the moving direction. On the other hand, in the case where a plurality of contact / separation means are provided in the opening / closing body, in order to store the opening / closing body in a more uniform shape when the opening / closing body is closed and moved, for example, these contact / separation means are connected to the opening / closing body. It is more preferable to arrange symmetrically or substantially symmetrically with respect to the opening / closing body width direction with reference to the center position in the opening / closing body width direction orthogonal to the opening / closing movement direction.

  In the first invention described above, as an example of the contact / separation means extending in the direction including the component in the opening / closing movement direction of the opening / closing body, there are a plurality of contact / separation means. Of the portion where the one surface of the opening and closing body and the other surface overlap in a state where the other movement limit of the movement and the closing movement has been reached, the opening and closing body until the one movement limit is reached. In the part where the one surface is separated from the other surface by moving one side, the opening / closing body is moved away from the end in the one moving direction in the other moving direction of the opening / closing body. Extending without crossing each other up to the point separated from the end, these contact / separation means are arranged in the opening / closing body width direction with reference to the center position in the opening / closing body width direction orthogonal to the opening / closing movement direction of the opening / closing body. Symmetrical or nearly symmetrical Mention may be made of those that are location.

  According to this, in the state where the opening / closing body reaches the other movement limit, the one side of the opening / closing body overlaps with the other surface until the opening / closing body reaches the one movement limit. The end of the opening / closing body in the other moving direction from a position away from the end of the one moving direction of the opening / closing body in a portion where the one surface and the other surface are separated by moving The contact / separation means are extended without crossing each other up to a place separated from the part, and the contact / separation means are symmetrical in the opening / closing body width direction with respect to the center position in the opening / closing body width direction. Since they are arranged substantially symmetrically, the opening / closing body is more uniformly accommodated when the opening / closing body is closed and moved.

  Each of the contacting / separating means is configured such that, in a state where the one surface of the opening / closing body and the other surface overlap with each other when the opening / closing body reaches the other movement limit, the opening / closing body has the one movement limit. The other side of the opening / closing body from a position away from the end in the one moving direction of the opening / closing body at a portion where the one surface and the other surface are separated by moving the one side until reaching the other For example, when the opening / closing body starts the one movement and reaches a certain moving speed, the opening / closing body is moved to the one end of the moving direction. It is possible to apply braking to one movement of the opening / closing body until the movement limit is reached.

  In the first invention described above, the structure of the contact / separation means is arbitrary, but as a first example, a male engagement element provided in large numbers on one of the one surface and the other surface of the opening / closing body. Further, there can be mentioned one constituted by a large number of female engaging elements provided on the other side. Here, the structure of the male engaging element and the female engaging element is arbitrary, for example, a so-called Velcro, in which the male engaging element is hook-shaped and the female engaging element is pile-shaped, A rail-shaped male-female engagement element, male-female button, etc. can be mentioned.

  Further, as a second example of the structure of the contact / separation means, the one surface of the opening / closing body and the other surface are provided by being provided on at least one of the one surface and the other surface of the opening / closing body. Examples thereof include magnetic means having different polarities depending on the surface. According to this, the polarity of the one surface of the opening / closing body and the polarity of the other surface of the opening / closing body are different by the magnetic means, so that the opening / closing body moves by the other of the opening movement and the closing movement. When the one surface and the other surface overlap each other, the one surface and the other surface are bonded to each other by attractive force due to magnetic force. For this reason, the one movement of the opening / closing body is braked by the attractive force due to the magnetic force acting between the one surface and the other surface.

  Here, the magnetic means is arbitrary as long as the polarity can be different between the one surface and the other surface of the opening / closing body. For example, the magnetic pole on one surface of the front and back surfaces is an S pole. Then, a sheet-like magnet whose magnetic pole on the other surface is an N pole, or granular magnetite is bonded to at least one of the one surface and the other surface of the opening / closing body with an adhesive or the like. Can be mentioned.

  Furthermore, as a third example of the structure of the contact / separation means, an adhesive tape disposed on at least one of the one surface and the other surface of the opening / closing body can be exemplified. Note that, in this example, the adhesive tape has a detachable characteristic that easily separates the one surface and the other surface of the opening / closing body after connecting the one surface and the other surface of the opening / closing body. It is more preferable that it has. Moreover, it is more preferable that the adhesive tape is such that the adhesiveness does not decrease so much even if the one surface and the other surface of the opening / closing body are connected and separated many times.

  In the first invention described above, the contact / separation means includes a large number of male engagement elements provided on one of the one surface and the other surface of the opening / closing body, and a large number of female engagement elements provided on the other side. In the case where it is constituted by a coupling, it is provided with connection blocking means for blocking connection of at least a part of a portion where the one surface and the other surface of the opening / closing body are connected by the contact / separation means. May be. The structure of this connection blocking means is arbitrary, but as an example, it is a face material, and one of the front and back surfaces of this face material is provided on the one surface of the opening / closing body. The other side of the front and back surfaces of the face material can be connected to the combination member, and the other engagement member provided on the other side of the opening / closing body cannot be connected to the other engagement member. be able to.

  According to this, the other surface, which is the surface opposite to the one surface of the face material connected to the one engagement element provided in large numbers on the one surface of the opening / closing body, is opened / closed. When the body moves the other of the opening movement and the closing movement, the connection with the other surface of the opening / closing body is blocked. In other words, when the opening / closing body moves the other of the opening movement and the closing movement, the face material connected to the one engaging element provided in large numbers on the one surface of the opening / closing body. The connection force between the other surface, which is the surface opposite to the one surface, and the other surface of the opening / closing body is zero.

  For this reason, without removing at least a part of either the male engagement element or the female engagement element already provided in the opening / closing body, the one surface and the other surface of the opening / closing body Connection can be blocked. In other words, the connection blocking means can easily reduce the number of places where the one movement of the opening / closing body is braked.

  In addition, the structure of the one surface of the face material serving as the connection preventing means is arbitrary as long as it can be connected to the one engaging element provided on the one surface of the opening and closing body, for example, Examples include one provided with a large number of engagement elements that can be engaged with the one engagement element of the opening / closing body and one coated with an adhesive that can adhere to the one engagement element of the opening / closing body. .

  In the first invention described above, even when the contacting / separating means is composed of an adhesive tape disposed on at least one of the one surface and the other surface of the opening / closing body, You may provide the connection prevention means for preventing the connection of at least one part of the part which the said one surface and said other surface of an opening-and-closing body connect.

  An opening / closing device with brake means according to a second aspect of the present invention is the opening / closing device with brake means provided with braking means for braking one of the opening movement and closing movement of the opening / closing body that can be opened and closed. The brake means is composed of an opening / closing braking member having one end coupled to the opening / closing body and the other end coupled to a support member and moving in the opening / closing movement direction of the opening / closing body together with the opening / closing movement of the opening / closing body. Further, at least one of the front and back surfaces of the opening / closing braking member is provided with contact / separation means for connecting and separating the one surface and the other surface of the opening / closing braking member. The separating means connects the one surface of the opening / closing braking member to the other surface when the opening / closing body moves in the other of the opening movement and the closing movement, and the opening / closing body moves in the one movement. When the are those with the one surface and the other surface of the closing braking member which has been connected and separating.

  In this opening / closing device with brake means, at least one of the front and back surfaces of the opening / closing braking member is provided with contact / separation means for connecting and separating the one surface and the other surface of the opening / closing braking member. The contact / separation means connects the one surface and the other surface of the opening / closing braking member when the opening / closing body moves the other, and connects when the opening / closing body moves the one side. Since the one surface of the open / close braking member separated from the other surface is separated, one movement of the opening / closing body is caused by the connection force between the one surface and the other surface of the open / close braking member by the contact / separation means. Will be braked. That is, the moving speed when the opening / closing body moves in one direction is decelerated by the connecting force between the one surface and the other surface of the opening / closing braking member by the contact / separation means. For this reason, also according to the second aspect of the present invention, the opening / closing device with brake means can be constructed with a simplified structure.

  Further, according to the second aspect of the present invention, the opening / closing body can be obtained by simply connecting one end of the opening / closing braking member whose other end is connected to the support member to the opening / closing body of the opening / closing apparatus already installed or the manufacturing opening / closing apparatus. The one movement of the vehicle can be braked.

  Here, the shape, structure, and the like of the opening / closing braking member are arbitrary, but as an example, a member that is a belt-like member having a long length in the opening / closing movement direction of the opening / closing body can be given.

  Also, the shape, structure, etc. of the support member to which the other end of the opening / closing braking member is coupled is arbitrary, but as an example of the case where the opening / closing braking member is the belt-like member, for winding and unwinding the opening / closing braking member And a winding shaft that rotates forward and backward. According to this, the opening / closing braking member can be wound from the take-up shaft and fed out and smoothly moved in the opening / closing movement direction of the opening / closing body along with the movement of the opening / closing body.

  The position where one end of the opening / closing braking member is coupled to the opening / closing body is arbitrary, and may be, for example, the end of the opening / closing body in the one moving direction, and may be separated from the end of the opening / closing body in the one moving direction. If the tip member is provided at the tip in the one moving direction of the opening / closing body, this tip member may be used.

  The number of open / close braking members coupled to the open / close body may be one or plural, and is arbitrary, but in order to apply more stable braking to the one movement of the open / close body, a plurality of open / close brake members may be used. One end of each open / close brake member is coupled to the open / close body, and these open / close brake members are symmetrical or substantially symmetrical with respect to the open / close body width direction with reference to the center position in the open / close body width direction orthogonal to the open / close movement direction of the open / close body. More preferably, it is arranged.

  The structure of the contacting / separating means provided on the opening / closing braking member is arbitrary, but as an example, a male engagement element provided in large numbers on one of the one surface and the other surface of the opening / closing braking member and a large number on the other side. The thing comprised with the female-type engaging element provided can be mentioned. The structure of the male engagement element and the female engagement element is arbitrary, for example, a so-called Velcro or rail-shaped engagement element in which the male engagement element is hook-shaped and the female engagement element is pile-shaped. Male and female engaging elements, male and female buttons and the like can be mentioned. The contact / separation means is provided on at least one of the one surface and the other surface of the opening / closing braking member, so that the polarity of the one surface of the opening / closing braking member is different from that of the other surface. Different magnetic means may be used.

  The contact / separation means may extend to the opening / closing braking member, or may be provided so as to be dispersed in the opening / closing braking member.

  The location where the contact / separation means is provided on the opening / closing braking member is arbitrary. As described above, when the opening / closing braking member is a belt-like member having a long length in the opening / closing movement direction of the opening / closing body, the opening / closing body is moved to the one movement limit immediately after the opening / closing body starts the one movement. In order to brake the one movement of the opening / closing body until reaching the position, for example, the contact / separation means may be extended over the entire length of the opening / closing body in the opening / closing movement direction of the opening / closing braking member. In addition, braking is applied to the one movement of the opening / closing body from when the opening / closing body starts the one movement and reaches a certain moving speed until the opening / closing body reaches the one movement limit. In other words, the contact / separation means may be extended at a predetermined middle portion of the opening / closing brake member in the opening / closing movement direction of the opening / closing body.

  An opening / closing apparatus with brake means according to a third aspect of the present invention is the opening / closing apparatus with brake means provided with a brake means for braking one of the opening movement and closing movement of the opening / closing body that can be opened and closed. The brake means is provided at an opening / closing body width direction end perpendicular to the opening / closing movement direction of the opening / closing body, and the cross-sectional shape of the opening / closing movement direction of the opening / closing body is an uneven shape; A second engaging member that is provided on a guide member that guides the opening / closing movement of the opening / closing body and has an uneven shape in the opening / closing movement direction of the opening / closing body, and is engageable with the first engaging member. It is characterized by being.

  According to this, when the opening / closing body moves in the one direction, the first engagement member provided at the end of the opening / closing body width direction engages with the second engagement member provided in the guide member, thereby opening and closing. Since the movement of one of the bodies is braked, the opening / closing device with a brake means can also be structured in a simplified manner according to the third invention.

  Here, the cross-sectional shape of the opening and closing bodies of the first engaging member and the second engaging member in the opening and closing direction is such that the first engaging member and the second engaging member are engaged when the opening and closing body moves in one direction. The first engagement member and the second engagement member are less likely to be engaged when the opening / closing body moves the other when compared to when the opening / closing body moves one. It is preferable.

  The first engagement member may be provided over the entire length of the opening / closing body in the opening / closing body width direction at the end of the opening / closing body in the opening / closing body width direction. You may provide in a part. Similarly, the second engaging member may be provided over the entire length of the guide member in the opening / closing movement direction of the opening / closing body, or may be provided in a part of the opening / closing movement direction of the opening / closing body in the guide member.

  In order to brake the one movement of the opening / closing body immediately after the opening / closing body starts the one movement until the opening / closing body reaches the one movement limit, for example, the first engagement member is used. The opening / closing body may be provided in the vicinity of the opening / closing body width direction end at the end in the one moving direction, and the second engagement member may be provided over the entire length of the guide member in the opening / closing movement direction. In addition, braking is applied to the one movement of the opening / closing body from when the opening / closing body starts the one movement and reaches a certain moving speed until the opening / closing body reaches the one movement limit. For example, the first engagement member is provided in the vicinity of the end of the opening / closing body in the width direction of the opening / closing body, and the second engagement member is predetermined in the opening / closing movement direction of the opening / closing body of the guide member. May be provided in the middle.

  The first engagement member may be provided on both ends of the opening / closing body width direction or on one side. The first engagement member may be configured integrally with the opening / closing body, or may be configured by a member different from the opening / closing body. When the first engaging member is formed of a member different from the opening / closing body, it may be attached to and detached from the opening / closing body or may not be removable.

  Similar to the first engaging member, the second engaging member may be configured integrally with the guide member, or may be configured as a member different from the guide member. When the second engaging member is constituted by a member different from the guide member, it may be attached to and detached from the guide member, or may not be removable.

  In addition, the material of the first engagement member and the second engagement member is arbitrary, but at the time of opening and closing movement, a rubbing sound and a collision sound generated when the first engagement member and the second engagement member are engaged with each other. It is preferable that the material can suppress such as, for example, a material having flexibility such as synthetic resin and rubber. Examples of synthetic resins include vinyl chloride resin, polyethylene resin, nylon resin, and polypropylene.

  The first to third inventions described above can be applied to any opening / closing device with a brake means, for example, to a shutter device in which the opening / closing body is a shutter curtain. Further, the second invention can also be applied to a door device in which the opening / closing body is a door.

  The shutter device may be a disaster prevention shutter device (including a disaster prevention shutter device for elevators) that forms a disaster prevention zone by closing and moving the disaster prevention shutter curtain in the event of a disaster such as a fire, and shutters openings such as doorways and windows An opening shutter device that opens and closes the curtain, a garage shutter device, a shutter device installed in a truck bed or a container, or the like may be used.

  The door device may be a disaster prevention door device in which the disaster prevention door is closed and rotated when a disaster such as a fire occurs, or may be a door device such as a front door.

  Further, when the opening / closing device with brake means is a shutter device, all or the main part of the shutter curtain may be formed of a sheet, may be formed of a plurality of continuous slats, or may be formed of a net. May be formed by connecting a plurality of panels, may be formed by a plurality of pipes and a link connecting these pipes, and may be a composite of at least two of these. It may be formed.

  Further, the opening / closing movement direction of the shutter curtain may be the vertical direction, the left / right direction, or a direction inclined with respect to these directions.

  When the shutter curtain opening / closing movement direction is the vertical direction, the downward movement may be a closing movement, the upward movement may be an opening movement, the downward movement may be an opening movement, and the upward movement The movement may be a closed movement.

  Further, the one movement of the shutter curtain may be a closing movement or an opening movement.

  In addition, when the closing movement of the shutter curtain is a downward movement, the principle for the closing movement may be arbitrary. One example is a self-weight closing type in which the closing movement is performed by the weight of the shutter curtain. It is.

  The structure for opening and closing the shutter curtain is arbitrary, and an example thereof is to open and close the shutter curtain by winding and unwinding with a winding shaft that can rotate forward and reverse.

  When the shutter curtain is opened and closed by winding and unwinding with a winding shaft, the winding shaft may be of any structure, for example, a hollow or solid single shaft or connected in the axial direction. The shaft may be composed of a plurality of shafts, or may include a central shaft that does not rotate and a rotating body that is rotatably disposed on the outer periphery of the central shaft and that winds and unwinds the shutter curtain. Etc. And this rotary body may be comprised etc. including the wheel arranged apart in the direction of an axis in the perimeter of a central axis, and the connecting member which connects these wheels, and this connecting member, A plurality of bar-shaped members arranged in the circumferential direction may be used, or a pipe-shaped member in which each wheel is housed may be used.

  Furthermore, the opening movement of the shutter curtain may be performed by a manual operation force, may be performed by a driving force from a driving source such as an electric motor, may be performed by the weight of a balance weight, and at least two of these. It may be done in two composites.

  Further, the shutter device is provided with an elastic member such as a return spring that accumulates the return elastic force when the shutter curtain is closed, and the shutter curtain is opened using the return elastic force as an auxiliary force. Also good. When this elastic member is a spring, this spring may be an arbitrary one such as a torsion coil spring or a mainspring spring.

  According to the present invention, even when the opening / closing device includes a brake means for braking one of the opening movement and the closing movement of the opening / closing body, the opening / closing device can be configured with a simplified structure. become.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention (1st-3rd invention) is demonstrated based on drawing. FIG. 1 is a front view showing the entirety of a shutter device serving as an opening / closing device with a brake means according to an embodiment of the first invention. 2 is a cross-sectional view taken along line S2-S2 of FIG. 1, and FIG. 3 is a vertical cross-sectional view of the shutter device. This shutter device is a disaster prevention shutter device for elevators, and this disaster prevention shutter device for elevators is located on the front side of the elevator door 2 as viewed from the elevator hall 1 as shown in FIGS. The shutter curtain 20 is moved up and down.

  The elevator lifting / lowering box 4 that moves up and down in the vertical hole 3 in the building shown in FIGS. 2 and 3 stops at each floor of the building where the disaster prevention shutter device for the elevator is installed, and is shown in FIG. As described above, an indicator 5 that displays the current position of the lifting box 4 and the like is installed in the upper part of the elevator door 1 in a case 7 that is attached to the ceiling member 6 in a suspended state. Since the two left and right elevator doors 2 are guided by the upper and lower guide members 8 and 9 shown in FIG. 3 and can be opened and closed left and right, the elevator door 2 on the floor where the lifting box 4 is stopped It opens and closes with the driving force of a driving device (not shown).

  As shown in FIG. 2, guide rails 21 in which both end portions in the width direction which is the left and right direction of the shutter curtain 20 are slidably inserted are attached to the left and right side walls 10 on the front side of the elevator door 2. The opening and closing movement of the shutter curtain 20 is guided by these guide rails 21 extending vertically as members. Inside the guide rail 21, a retaining member 22 is attached to the shutter curtain 20, and the shutter curtain 20 opens and closes while being retained by these retaining members 22.

  Further, smoke guide members 23 that come into contact with the shutter curtains 20 are provided in the opening portions of the guide rails 21 where the end portions 32E of the shutter curtain 20 in the width direction are inserted. It is prevented that the smoke generated by the occurrence of the above has passed through the gap between the shutter curtain 20 reaching the fully closed position and the guide rail 21 and reaches the opposite side of the shutter curtain 20.

  As shown in FIG. 3, the shutter curtain 20 is wound around the ceiling space 11 partitioned by the ceiling member 6 so that the shutter curtain 20 can be moved upward, and the shutter curtain 20 is closed and moved downward. A winding shaft 24 for extending the shutter curtain 20 is arranged horizontally so that the shutter curtain 20 can be extended, and the winding shaft 24 is attached to the building housing 12 such as a falling wall existing in the ceiling space 11 on both the left and right sides in FIG. Are supported by the side plate portions 25 and 26, which are support members, so as to be rotatable forward and backward. The ceiling member 6 is provided with a lintel 13 having a gap for vertically inserting the shutter curtain 20 between the left and right guide rails 21. The lintel 13 is also illustrated in the gap of the lintel 13. Although not provided, a smoke shielding member similar to the smoke shielding member 23 described above is provided.

  As shown in FIGS. 1 and 3, the winding shaft 24 and the side plate portions 25 and 26 are accommodated in the shutter case 27, and the shutter curtain 20 reaches the fully open position inside the shutter case 27. A locking device 29 for locking the locked member 28 attached at or near the lower end of the shutter curtain 20 is disposed. The locking device 29 has a bifurcated locking member 30 having an upper piece portion 30A and a lower piece portion 30B, and the locking member 30 is rotatable up and down. The locking member 30 in a normal state is prevented from rotating downward in a state where the upper piece 30A and the lower piece 30B are in a horizontal posture by a stop function of a stop means (not shown) incorporated in the locking device 29. At this time, since the lower piece 30B is inserted into the opening hole 28A of the locked member 28, the shutter curtain 20 reaching the fully opened position is moved to the fully opened position by the locking action of the locking device 29. Maintained.

  If a fire breaks out in a building where an emergency shutter device for elevators is installed on each floor, an operation not shown by the control device that receives the signal from the sensor that detected this fire or by a person who knows the occurrence of the fire By operating the members, the stop function of the stop means of the locking device 29 in the emergency shutter device for each elevator is released. Therefore, the shutter curtain 20 of these shutter devices is engaged by its own weight. The stop member 30 is rotated downward, and the shutter curtain 20 from which the locked member 28 is detached from the lock member 30 by this downward rotation closes and moves downward, and this closing movement is caused by winding of the shutter curtain 20 by its own weight. The shutter curtain 20 is made up of the take-up shaft 24 by the positive rotation of the take-up shaft 24. Unwound and reaches the fully closed position.

  As shown in FIGS. 1 and 3, the shutter curtain 20 has a seat plate 31 that is a front end member on the closing side of the shutter curtain 20, and the seat plate 31 is attached to the lower end portion of the shutter curtain 20. The curtain main body 32 is formed by applying and / or impregnating a fire-resistant paint to a sheet having fire resistance and smoke shielding properties. The locked member 28 is attached to the seat plate 31.

  As shown in FIG. 1, the shutter curtain 20 has a handle 2 for lifting the shutter curtain 20 with a hand when the shutter curtain 20 is opened and moved upward on the side facing the elevator door 2. Kinds of handle members 33, 37 are provided. These handle members 33 and 37 are used when an evacuee who was in the elevator box 4 at the time of a fire comes out of the elevator box 4 stopped on the floor where the elevator shutter device is installed. In addition, the shutter curtain 20 reaching the fully closed position of the disaster prevention shutter device is lifted so that it can pass under it. As shown in FIG. 1, the lower handle member 33 is a U-shaped member attached downward to the seat plate 31. On the other hand, the upper handle member 37 is provided in two upper and lower stages, and each is formed by a part of a bar-like member 35 that is horizontally disposed on the curtain body 32 and serves as a reinforcing member of the shutter curtain 20. .

  The rod-shaped member 35 will be described in detail. As shown in FIG. 1, the curtain body 32 and the lower part of the back surface of the curtain body 32 (the surface facing the elevator door 2) Two horizontally long sheets 34 formed of the same material and having a length in the width direction of the curtain body 32 are arranged in two upper and lower stages, and the upper and lower portions of each sheet 34 are sewn or bonded to the curtain body 32. Has been. For this reason, the upper and lower two-stage bag portions 34 </ b> A formed of the curtain body 32 and the sheet 34 are provided below the curtain body 32. A rod-like member 35 having both ends inserted into the left and right guide rails 21 is inserted into each bag portion 34A. A pair of left and right openings 36 is formed in each bag part 34 </ b> A, and a part of the bar-shaped member 35 exposed from these openings 36 serves as the handle member 37.

  When the evacuee who has come out of the lifting box 4 lifts the shutter curtain 20 that has reached the fully closed position and passes under it, first, the upper handle of the two upper and lower handle members 37 is provided. The shutter 37 is lifted by placing a hand on the member 37, and then the shutter curtain 20 is further lifted by placing a hand on the lower handle member 37, and the shutter member 20 is also raised by raising the shutter curtain 20. lift.

  FIG. 4 shows the internal structure of the winding shaft 24. As shown in FIG. 4, the take-up shaft 24 is rotatably supported by side plate portions 25 and 26 that are support members on both the left and right sides. The winding shaft 24 is a hollow shaft, a first shaft-like body 41 is provided at one end portion thereof, a second shaft-like body 46 is provided at the other end portion thereof, and the first shaft-like body 41 is provided. Supported by one side plate portion 26, the second shaft-like body 46 is supported by the other side plate portion 25.

  The first shaft-like body 41 includes cores 42 and 43 that are inserted and fixed inside the take-up shaft 24 at intervals, and first cores that are fixed to the cores 42 and 43 and protrude from the take-up shaft 24. The center shaft 44 and a flange member 45 attached to the projecting end of the first center shaft 44, and the side plate portion 26 can freely rotate the first center shaft 44 between the core 43 and the flange member 45. I support it. The second shaft-like body 46 protrudes from the winding shaft 24, a ring member 47 that is inserted and fixed inside the winding shaft 24, a second central shaft 48 that is rotatably inserted into the ring member 47, and the winding shaft 24. The side plate portion 25 supports the second central shaft 48 in a non-rotatable manner between the ring member 47 and the flange member 49. The flange member 49 is attached to the end of the second central shaft 48. For this reason, the rotation of the winding shaft 24 for opening and closing the shutter curtain 20 includes rotation between the first central shaft 44 of the first shaft body 41 and the side plate portion 26 and the second shaft body 46. This is performed by rotation between the ring member 47 and the second central shaft 48.

  Inside the winding shaft 24, a return coil spring 50 and a spring driving member 51 are housed and arranged. Since the spring driving member 51 is coupled to the winding shaft 24 by welding or screws, the winding shaft 24 and Rotates together. One end of the return coil spring 50 is coupled to a protrusion 51 </ b> A formed on the spring drive member 51, and the other end is coupled to a projection 48 </ b> A formed on the second central shaft 48 of the second shaft body 46. Yes. That is, one end of the return coil spring 50 is a member that constitutes the winding shaft 24 and rotates integrally with the winding shaft 24, and the other end does not rotate integrally with the winding shaft 24. Are respectively coupled to the members.

  When the shutter curtain 20 that has been fully opened moves close while rotating the winding shaft 24 by its own weight including the weight of the seat plate 31, the return spring force is accumulated, and the shutter curtain 20 The fully closed position is reached while accumulating the return spring force.

  As described above, when the shutter curtain 20 that is closed and moved by its own weight reaches the fully closed position, when the shutter curtain 20 is lifted by the handle members 33 and 37, the winding shaft 24 returns. Since the shutter curtain 20 is wound up by reverse rotation with the accumulated return spring force of the coil spring 50, the lifting of the shutter curtain 20 by the handle members 33 and 37 is assisted by the return spring force. The evacuees can lightly lift the shutter curtain 20 with a small force and pass under it.

  When the shutter curtain 20 is returned to the fully open position after the shutter curtain 20 is fully closed for evacuation training or the like, the shutter curtain 20 is lifted to a fully open position by a large force. As a result, the upper surface of the locked member 28 comes into contact with the lower surface of the upper piece 30A of the locking member 30 that has been rotated downward as described above, and the locking member 30 is brought into contact therewith. Rotates upward to return to a horizontal posture, and the lower piece 30B is inserted into the opening hole 28A of the locked member 28. At this time, since the stop function of the stop means of the locking device 29 has been recovered, the shutter curtain 20 is stopped at the fully opened position by the locking member 30 that has returned to the horizontal posture, and all of the shutter curtains 20 start to close. Return to the previous state.

  Next, an embodiment of brake means provided in the elevator disaster prevention shutter device shown in FIG. 1 will be described. FIG. 5 is a development view of a surface on the side of the elevator hall 1 (hereinafter referred to as the surface 20A), which is one of the front and back surfaces of the shutter curtain 20 of the shutter device shown in FIG. 1, and FIG. It is an expanded view of the surface (henceforth the back surface 20B) of the elevator door 2 side which is the other surface of the front and back surfaces of the shutter curtain 20 of the shutter apparatus shown.

  As shown in FIG. 5, in the curtain width direction (left and right direction in FIG. 5) that is orthogonal to the opening / closing movement direction of the shutter curtain 20 on the surface 32 </ b> A of the curtain body 32, the upper bag portion 34 </ b> A is near both ends 32 </ b> E. From the vicinity of the upper end portion to a portion of the surface 32A of the curtain main body 32 that is largely separated from the end portion in the opening movement direction of the shutter curtain 20, a pile-shaped female engagement element 101 that is one engagement element of a so-called Velcro. Are provided so as to extend without crossing each other in the opening / closing movement direction of the shutter curtain 20. In other words, each female engagement element 101 has the shutter curtain 20 in a portion where the front surface 32A of the curtain body 32 overlaps the back surface 32B in a state where the shutter curtain 20 has reached the fully open position that is the movement limit of the opening movement. The end portion of the shutter curtain 20 in the opening movement direction from the position away from the end portion of the shutter curtain 20 in the closing movement direction in the portion that is separated by moving to close until reaching the fully closed position which is the movement limit of the closing movement. Are provided so as to extend in the opening / closing movement direction of the shutter curtain 20 up to a position separated from the shutter curtain 20. Furthermore, in other words, each female engagement element 101 moves from the state in which the shutter curtain 20 has reached the fully closed position, which is the movement limit of the closing movement, until it reaches the fully open position, which is the movement limit of the opening movement. Thus, of the portion where the front surface 32A of the curtain body 32 overlaps the back surface 32B, the portion away from the end of the shutter curtain 20 in the closing movement direction is separated from the end of the shutter curtain 20 in the opening movement direction. A large number are provided so as to extend in the opening / closing movement direction of the shutter curtain 20 up to the place where the shutter curtain 20 is located.

  The overall shape of the left and right female engagement elements 101 provided on the surface 32A of the curtain body 32 is the dimension in the curtain length direction (vertical direction in FIG. 5), which is the opening / closing movement direction of the shutter curtain 20, that is, The length in the curtain width direction with respect to the length dimension, that is, the belt width is small. The left and right female engaging elements 101 provided in large numbers on the surface 32A of the curtain body 32 are symmetric or substantially symmetric with respect to the curtain width direction with reference to the midpoint 32M that is the center position of the curtain body 32 in the curtain width direction. Is arranged.

  On the other hand, as shown in FIG. 6, in the curtain width direction (left and right direction in FIG. 6) on the back surface 32B of the curtain main body 32, it is in the vicinity of both end portions 32E and far away from the upper end portion of the upper bag portion 34A. The hook-shaped hook that is the other engagement member of the so-called Velcro that can be engaged with the female engagement element 101 on the front surface 32A from the position of the back surface 32B of the curtain body 32 to the vicinity of the end of the shutter curtain 20 in the opening movement direction. A large number of male engagement elements 102 are provided so as to extend without crossing each other in the opening / closing movement direction of the shutter curtain 20. In other words, each male engagement element 102 has the shutter curtain 20 in a portion where the back surface 32B of the curtain body 32 overlaps the front surface 32A in a state where the shutter curtain 20 reaches the fully open position which is the movement limit of the opening movement. The end of the shutter curtain 20 in the opening movement direction from the position away from the end of the shutter curtain 20 in the closing movement direction in the portion that is separated by moving the closing until reaching the fully closed position, which is the movement limit of the closing movement. A large number are provided so as to extend in the opening / closing movement direction of the shutter curtain 20 up to a place separated from the part. Furthermore, in other words, each male engagement element 102 moves from the state where the shutter curtain 20 has reached the fully closed position which is the movement limit of the closing movement to the fully open position which is the movement limit of the opening movement. Thus, of the portion where the back surface 32B of the curtain body 32 overlaps the front surface 32A, from the portion separated from the end portion in the closing movement direction of the shutter curtain 20 to the end portion in the opening movement direction of the shutter curtain 20 A large number are provided so as to extend in the opening / closing movement direction of the shutter curtain 20 up to the separated positions.

  Note that the overall shape of the left and right male engagement elements 102 provided on the back surface 32B of the curtain body 32 is the same as that of the left and right female engagement elements 101 provided on the surface 32A of the curtain body 32, or It is almost the same. That is, the left and right male engagement elements 102 on the back surface 32B have the same or substantially the same length and width dimensions as the left and right female engagement elements 101 on the front surface 32A. Similarly to the left and right female engagement elements 101 on the front surface 32A, the left and right male engagement elements 102 on the back surface 32B are arranged in the curtain width direction with reference to the middle point 32M that is the center position in the curtain width direction in the curtain body 32. They are arranged symmetrically or substantially symmetrically.

  The arrangement of the left and right female engagement elements 101 provided on the surface 32A of the curtain body 32 and the left and right male engagement elements 102 provided on the back surface 32B of the curtain body 32 will be described. The position in the curtain width direction where a large number of mold engaging elements 101 are provided on the surface 32A of the curtain body 32 is the same as or substantially the same as the position in the curtain width direction where a large number of left and right male engaging elements 102 are provided on the back surface 32B of the curtain body 32. It has become. On the other hand, the position of the front end portion in the opening movement direction of the shutter curtain 20 on the left and right female engagement elements 101 on the front surface 32A and the position of the front end portion in the opening movement direction of the shutter curtain 20 on the left and right male engagement elements 102 on the back surface 32B. Is displaced in the opening movement direction of the shutter curtain 20. That is, the position of the front end portion in the opening movement direction of the shutter curtain 20 on the left and right male engagement elements 102 on the back surface 32B is the position of the front end portion in the opening movement direction of the shutter curtain 20 on the left and right female engagement elements 101 on the front surface 32A. Rather than the opening side of the shutter curtain 20. The distance that the male engagement element 102 is displaced in the opening movement direction of the shutter curtain 20 with respect to the female engagement element 101 is the length that the curtain body 32 is wound around the winding shaft 24 once. Yes. This is because when the curtain main body 32 is wound around the winding shaft 24, the left and right male engagement elements 102 on the back surface 32B have their leading ends in the opening movement direction of the shutter curtain 20, and the left and right female engagement elements on the front surface 32A. This is because the front end of the shutter curtain 20 in the direction of opening movement of the shutter 101 just overlaps to start engagement.

  As described above, a large number of female engaging elements 101 provided on the surface 32A of the curtain body 32 and a large number of male engaging elements 102 provided on the back surface 32B of the curtain body 32 are provided on one surface of the curtain body 32. The contacting / separating means 100 for connecting and separating a certain surface 32A and the back surface 32B, which is the other surface of the curtain body 32, is configured. This is an engagement / disengagement means for engaging and disengaging the rear surface 32B. The contact / separation means 100 serves as a brake means for braking the closing movement of the shutter curtain 20.

  FIG. 7 is a perspective view of the shutter device showing the shutter curtain 20 being closed and moving in the direction of arrow A, and FIG. 8 is a perspective view of the shutter device showing when the shutter curtain 20 has reached the fully closed position. FIG.

  When the curtain main body 32 of the shutter curtain 20 is wound around the winding shaft 24, the front surface 32A and the back surface 32B of the curtain main body 32 are wound while facing each other. Since the left and right female engagement elements 101 and the left and right male engagement elements 102 provided on the back surface 32B of the curtain body 32 are overlapped with each other, the left and right female engagement elements 101 and the left and right male engagement elements 101 overlap each other. The mold engaging elements 102 are engaged with each other.

  On the other hand, as shown in FIG. 7, when the shutter curtain 20 is closed and moved by its own weight including the seat plate 31, the surface of the curtain main body 32 that is overlapped with each other and wound around the winding shaft 24. The curtain body 32 is fed out from the take-up shaft 24 while the separation between 32A and the back surface 32B is separated. When the portion of the curtain body 32 on which the contact / separation means 100 is provided is unwound from the take-up shaft 24, the female die of the surface 32A that is in the engaged state by being taken up by the take-up shaft 24. The combination element 101 and the male engagement element 102 on the back surface 32B are separated from each other. At this time, the engagement force between the female engagement element 101 on the front surface 32A and the male engagement element 102 on the back surface 32B is in the engaged state. The braking force against the closing movement of the shutter curtain 20 is obtained.

  As shown in FIG. 8, the female engagement element 101 of the contact / separation means 100 has an end portion in the opening movement direction of the shutter curtain 20 from the vicinity of the upper end portion of the upper bag portion 34 </ b> A on the surface 32 </ b> A of the curtain body 32. It is not provided in places up to (the vicinity of the seat plate 31). Further, the female engagement element 101 of the contact / separation means 100 is not provided to the vicinity of the end portion of the surface 32A of the curtain body 32 in the opening movement direction of the shutter curtain 20. This is because braking is applied to the closing movement of the shutter curtain 20 from when the curtain body 32 is fed out from the winding shaft 24 to reach a constant moving speed and before the shutter curtain 20 reaches the fully closed position. It is for calling. In other words, immediately after the curtain body 32 is unwound from the take-up shaft 24 until it reaches a certain moving speed, and when the shutter curtain 20 approaches the fully closed position, the shutter curtain 20 is closed. This is because braking is not applied.

  In the present embodiment of the first invention described above, a large number of closing movements, which are one movement of the shutter curtain 20, are provided on the surface 32A of the curtain body 32 constituting the contacting / separating means 100 serving as a brake means. Brake is applied by the engagement force between the female engagement element 101 and a large number of male engagement elements 102 provided on the back surface 32 </ b> B of the curtain body 32. For this reason, according to the present embodiment, the shutter device that is an opening / closing device with a brake means can be configured with a simplified structure.

  In the present embodiment, the direction in which the left and right female engagement elements 101 and male engagement elements 102 constituting the contact / separation means 100 are provided is the opening / closing movement direction of the shutter curtain 20. For this reason, according to this embodiment, it is easy to apply braking in the closing direction of the shutter curtain 20.

  In the present embodiment, two contact left and right means 100 are provided on the left and right surfaces 32A and 32B of the curtain main body 32, respectively, and a large number of left and right female engagement elements provided on the front surface 32A of the curtain main body 32. 101 is arranged symmetrically or substantially symmetrically with respect to the curtain width direction with reference to the middle point 32M which is the center position in the curtain width direction on the surface 32A of the curtain body 32, and a large number of left and right 101 are provided on the back surface 32B of the curtain body 32 The male engaging element 102 is also symmetrically or substantially symmetrically arranged in the curtain width direction with reference to the middle point 32M which is the center position in the curtain width direction on the back surface 32B of the curtain body 32. For this reason, according to this embodiment, when the curtain main body 32 is wound around the winding shaft 24, the winding diameter of the winding shaft 24 is uniform.

  In the present embodiment, the shutter curtain 20 (curtain body 32) is extended from the take-up shaft 24 to reach a certain moving speed and before the shutter curtain 20 reaches the fully closed position. Although the braking movement is applied to the closing movement of the shutter 20, the closing movement of the shutter curtain 20 is performed immediately after the shutter curtain 20 is fed from the winding shaft 24 until the shutter curtain 20 reaches the fully closed position. When braking is applied, the shutter curtain 20 is closed and moved until the shutter curtain 20 reaches the fully closed position in the portion where the front surface 32A and the back surface 32B of the curtain body 32 overlap in the state where the shutter curtain 20 has reached the fully open position. The left and right female engagement elements 101 and male engagement elements 102 are attached to all the parts separated by It may be provided number. In other words, the shutter curtain 20 opens and moves from the fully closed position until it reaches the fully open position, so that the left and right female engagement elements 101 are disposed on all the overlapping portions of the front surface 32A and the back surface 32B of the curtain body 32. A large number of male engaging elements 102 may be provided.

  Further, when the shutter curtain 20 (curtain main body 32) is drawn out from the winding shaft 24 and reaches a certain moving speed until the shutter curtain 20 reaches the fully closed position, the shutter curtain 20 is moved against the closing movement. When braking, the shutter curtain 20 closes and moves until the shutter curtain 20 reaches the fully closed position in the portion where the front surface 32A and the back surface 32B of the curtain body 32 overlap with the shutter curtain 20 reaching the fully open position. A large number of left and right female engagement elements 101 and male engagement elements 102 are provided from a portion separated from the end portion of the shutter curtain 20 in the closing movement direction to the end portion of the shutter curtain 20 in the opening movement direction. Just do it. In other words, when the shutter curtain 20 moves from the fully closed position until it reaches the fully opened position, the end of the shutter curtain 20 in the closing movement direction at the portion where the front surface 32A and the back surface 32B of the shutter curtain 20 overlap. A large number of left and right female engaging elements 101 and male engaging elements 102 may be provided from a position spaced from the portion to the end of the shutter curtain 20 in the opening movement direction.

  Further, in the case where braking is applied to the closing movement of the shutter curtain 20 immediately after the shutter curtain 20 (curtain main body 32) is unwound from the winding shaft 24 and before the shutter curtain 20 reaches the fully closed position. In the state where the shutter curtain 20 has reached the fully open position, the shutter curtain 20 in the portion where the front surface 32A and the back surface 32B of the curtain body 32 overlap each other by closing and moving until the shutter curtain 20 reaches the fully closed position. A large number of left and right female engagement elements 101 and male engagement elements 102 may be provided from the end in the closing movement direction of the shutter curtain to the portion spaced from the end in the opening movement direction of the shutter curtain 20. In other words, when the shutter curtain 20 moves from the fully closed position until it reaches the fully opened position, the end of the shutter curtain 20 in the closing movement direction at the portion where the front surface 32A and the back surface 32B of the shutter curtain 20 overlap. A large number of left and right female engaging elements 101 and male engaging elements 102 may be provided from a portion to a position separated from the end of the shutter curtain 20 in the opening movement direction.

  9 to 11 show another embodiment of the brake means shown in FIGS. 5 to 8. 9 is a development view of the front surface 20A of the shutter curtain 20 as in FIG. 5, and FIG. 10 is a development view of the back surface 20B of the shutter curtain 20 as in FIG. In the following description, the same reference numerals are used for members and devices having the same or the same functions as the members and devices described above, and description thereof will be omitted.

  As shown in FIG. 9, in the curtain width direction (left and right direction in FIG. 9) on the surface 32A of the curtain body 32, it is the vicinity of the right end 32E, which is one end of both ends 32E. From the vicinity of the upper end portion of the upper bag portion 34A to the left end portion 32E, which is the other end portion of the curtain width direction end portions 32E on the surface 32A of the curtain body 32, and in the opening movement direction of the shutter curtain 20. A large number of pile-shaped female engaging elements 111 are provided up to a position that is largely separated from the end. That is, a large number of female engaging elements 111 are provided in an oblique direction, which is a direction including a component in the opening / closing movement direction of the shutter curtain 20 on the surface 32A of the curtain body 32. Similar to the female engagement element 101 described above, the female engagement element 111 is a portion where the front surface 32A of the curtain body 32 overlaps the back surface 32B in a state where the shutter curtain 20 has reached the fully open position that is the movement limit of the opening movement. Among them, the shutter curtain 20 is moved away from the end in the closing movement direction of the shutter curtain 20 at a portion separated by moving the shutter curtain 20 until the shutter curtain 20 reaches the fully closed position which is the movement limit of the closing movement. A large number are provided up to locations that are separated from the end in the opening movement direction. The overall shape of the female engaging elements 111 provided in large numbers is a shape in which one of the pair of left and right female engaging elements 101 is arranged in an oblique direction.

  On the other hand, as shown in FIG. 10, in the curtain width direction (left and right direction in FIG. 10) on the back surface 32B of the curtain body 32, in the vicinity of the left end portion 32E that is one end portion of both end portions 32E. From a location that is largely separated from the upper end of the upper bag portion 34A, in the vicinity of the right end portion 32E that is the other end portion of the curtain width direction both end portions 32E on the back surface 32B of the curtain body 32, Many hook-shaped male engagement elements 112 are provided to the vicinity of the end of the shutter curtain 20 in the opening movement direction. That is, a large number of male engaging elements 112 are provided in an oblique direction that is a direction including a component in the opening / closing movement direction of the shutter curtain 20 on the back surface 32 </ b> B of the curtain body 32. The male engagement element 112 is such that the shutter curtain 20 moves in a closed manner in a portion where the back surface 32B of the curtain body 32 overlaps the front surface 32A in a state where the shutter curtain 20 has reached the fully opened position which is the movement limit of the opening movement. A large number are provided from a portion that is separated from the end portion in the closing movement direction of the shutter curtain 20 to a portion that is separated from the end portion in the opening movement direction of the shutter curtain 20. The overall shape of the male engaging elements 112 provided in large numbers is such that one of the pair of left and right male engaging elements 102 described above is disposed in an oblique direction.

  The arrangement relationship between a large number of female engaging elements 111 provided on the surface 32A of the curtain main body 32 and a large number of male engaging elements 112 provided on the back surface 32B of the curtain main body 32 will be described. The positions in the curtain width direction that are provided in large numbers on the curtain body 32 of 32A are the same as or substantially the same as the positions in the curtain width direction in which many male engaging elements 112 are provided on the curtain body 32 on the back surface 32B. On the other hand, the position of the front end portion in the opening movement direction of the shutter curtain 20 on the female engagement element 111 on the front surface 32A and the position of the front end portion in the opening movement direction of the shutter curtain 20 on the male engagement element 112 on the back surface 32B are: The curtain 20 is displaced in the opening movement direction. That is, the position of the front end portion in the opening movement direction of the shutter curtain 20 in the male engagement element 112 on the back surface 32B is more than the position of the front end portion in the opening movement direction of the shutter curtain 20 in the female engagement element 111 on the front surface 32A. It is located on the open side of the curtain 20. The distance by which the male engagement element 112 is displaced in the opening movement direction of the shutter curtain 20 with respect to the female engagement element 111 is the same as that of the male engagement element 102 described above. The length is wound once. This is because when the curtain main body 32 is wound on the winding shaft 24, the front end portion of the male engagement element 112 on the back surface 32B in the opening movement direction of the shutter curtain 20 and the shutter curtain on the female engagement element 111 on the front surface 32A. This is because the front end portion of the opening movement direction of 20 just overlaps to start engagement.

  In other words, the arrangement relationship between the female engagement element 111 and the male engagement element 112 described above is such that the male engagement element 112 on the back surface 32B shown in FIG. 10 replaces the female engagement element 111 on the front surface 32A shown in FIG. A straight line 32 </ b> L extending in the opening / closing movement direction of the shutter curtain 20 through the middle point 32 </ b> M that is the center position in the curtain width direction of the main body 32 is reversed left and right as a reversal axis, and the curtain main body 32 is once applied to the winding shaft 24. After moving the shutter curtain 20 in the opening movement direction by the length wound up, the engagement element is replaced from the female type to the male type. On the other hand, the female engaging element 111 on the front surface 32A shown in FIG. 9 reverses the male engaging element 112 on the back surface 32B shown in FIG. 10 to the left and right with the straight line 32L as an inversion axis, and the curtain body 32 is further wound up. After moving the shutter curtain 20 in the closing movement direction by the length wound around the shaft 24 once, the engaging element is replaced from the male type to the female type.

  As described above, a large number of female engaging elements 111 provided on the surface 32A of the curtain body 32 and a large number of male engaging elements 112 provided on the back surface 32B of the curtain body 32 are provided on one surface of the curtain body 32. The contact / separation means 110 is configured to connect and separate a certain surface 32A and a back surface 32B, which is the other surface. The contact / separation means 110 includes a surface 32A of the curtain body 32 and a back surface 32B of the curtain body 32. It is an engagement / disengagement means for engaging and disengaging. The contact / separation means 110 serves as a brake means for braking the closing movement of the shutter curtain 20.

  FIG. 11 is a perspective view of the shutter device showing the middle of the shutter curtain 20 closing and moving in the arrow B direction, as in FIG. 7 described above.

  When the curtain main body 32 of the shutter curtain 20 is wound around the winding shaft 24, the front surface 32A and the back surface 32B of the curtain main body 32 are wound while facing each other. Since the female engaging element 111 provided and the male engaging elements 112 provided in large numbers on the back surface 32B of the curtain main body 32 also face each other and overlap each other, the female engaging element 111 and the male engaging element 112 are engaged with each other. It becomes a joint state.

  On the other hand, as shown in FIG. 11, when the shutter curtain 20 closes and moves by its own weight including the seat plate 31, the surface of the curtain main body 32 that is overlapped with each other and wound around the winding shaft 24. The curtain body 32 is fed out from the take-up shaft 24 while the separation between 32A and the back surface 32B is separated. When the portion of the curtain body 32 where the contact / separation means 110 is provided is unwound from the take-up shaft 24, the female die of the surface 32A that is in the engaged state by being taken up by the take-up shaft 24. The coupling 111 and the male engagement element 112 on the back surface 32B are separated from each other. At this time, the engagement force between the female engagement element 111 on the front surface 32A and the male engagement element 112 on the back surface 32B is engaged. The braking force against the closing movement of the shutter curtain 20 is obtained.

  As shown in FIG. 11, the female engaging element 111 of the contacting / separating means 110 is similar to the female engaging element 101 of the contacting / separating means 100 described above, and the upper bag portion 34 </ b> A on the surface 32 </ b> A of the curtain body 32. Is not provided at a position from the vicinity of the upper end of the shutter curtain 20 to the end of the shutter curtain 20 in the opening movement direction (the vicinity of the seat plate 31). Although not shown, the female engagement element 111 of the contact / separation means 110 is not provided near the end portion of the surface 32A of the curtain body 32 in the opening movement direction of the shutter curtain 20. This is similar to the aforementioned contact / separation means 100, when the shutter curtain 20 (curtain body 32) is fed out from the take-up shaft 24 and reaches a constant moving speed, before the shutter curtain 20 reaches the fully closed position. This is because braking is applied to the closing movement of the shutter curtain 20 until.

  In the present embodiment described above, the closing movement, which is one movement of the shutter curtain 20, is a female engaging element provided in a large number on the surface 32 </ b> A of the curtain body 32 that constitutes the contacting / separating means 110 serving as a brake means. It is braked by the engaging force between 111 and a large number of male engaging elements 112 provided on the back surface 32B of the curtain body 32. For this reason, according to the present embodiment, the shutter device which is an opening / closing device with a brake means can be structured and simplified.

  In the present embodiment, unlike the contact / separation means 100 described above, only one contact / separation means 110 is provided on the front surface 32A and the back surface 32B of the curtain body 32. The direction in which is provided is an oblique direction with respect to the opening / closing movement direction of the shutter curtain 20. For this reason, according to the present embodiment, the winding diameter of the winding shaft 24 when the shutter curtain 20 is wound around the winding shaft 24 becomes more uniform than that of the aforementioned contact / separation means 100.

  In the present embodiment, the contact / separation means 110 is similar to the contact / separation means 100 described above, from when the shutter curtain 20 (curtain body 32) is unwound from the winding shaft 24 and reaches a certain moving speed. The shutter curtain 20 is braked against the closing movement of the shutter curtain 20 until the shutter curtain 20 reaches the fully closed position. However, the shutter curtain 20 is moved immediately after the shutter curtain 20 is unwound from the winding shaft 24. When braking is applied to the closing movement of the shutter curtain 20 until the fully closed position is reached, a portion where the front surface 32A and the back surface 32B of the curtain body 32 overlap with each other when the shutter curtain 20 reaches the fully open position. Of these, the shutter curtain 20 closes and moves until it reaches the fully closed position, It may be provided a large number of female engaging elements 111 and Yugatagakarigoko 112.

  Further, when the shutter curtain 20 (curtain main body 32) is drawn out from the winding shaft 24 and reaches a certain moving speed until the shutter curtain 20 reaches the fully closed position, the shutter curtain 20 is moved against the closing movement. When braking, the shutter curtain 20 closes and moves until the shutter curtain 20 reaches the fully closed position in the portion where the front surface 32A and the back surface 32B of the curtain body 32 overlap with the shutter curtain 20 reaching the fully open position. If a large number of female engaging elements 111 and male engaging elements 112 are provided from a portion separated from the end portion in the closing movement direction of the shutter curtain 20 to the end portion in the opening movement direction of the shutter curtain 20 at the separated portion. Good.

  Further, in the case where braking is applied to the closing movement of the shutter curtain 20 immediately after the shutter curtain 20 (curtain main body 32) is unwound from the winding shaft 24 and before the shutter curtain 20 reaches the fully closed position. In the state where the shutter curtain 20 has reached the fully open position, the shutter curtain 20 in the portion where the front surface 32A and the back surface 32B of the curtain body 32 overlap and move away until the shutter curtain 20 reaches the fully closed position. A large number of female engaging elements 111 and male engaging elements 112 may be provided from the end of the closing movement direction of the shutter curtain 20 to the position spaced from the end of the shutter curtain 20 in the opening movement direction.

  12 to 14 show still another embodiment of the brake means shown in FIGS. 12 is a development view of the front surface 20A of the shutter curtain 20 as in FIG. 5, and FIG. 13 is a development view of the rear surface 20B of the shutter curtain 20 as in FIG.

  As shown in FIG. 12, the curtain width direction dimension (hereinafter referred to as the width dimension) is present at the center or substantially the center in the curtain width direction (left-right direction in FIG. 12) on the surface 32 </ b> A of the curtain body 32. A large number of pile-shaped female engaging elements 121 having an inverted triangular shape gradually decreasing in the closing movement direction of the shutter curtain 20 are provided. The tip of the female engagement element 121 having an inverted triangular shape is located near the upper end of the upper bag part 34A, while the bottom part of the female engagement element 121 is the opening of the shutter curtain 20 in the curtain body 32. It is located at a location far away from the end in the moving direction. The female engagement element 121 is bilaterally symmetric or substantially bilaterally symmetric with a straight line 32 </ b> L extending in the opening / closing movement direction of the shutter curtain 20 passing through a midpoint 32 </ b> M that is the center position in the curtain width direction of the curtain body 32 as a symmetry axis. It has a shape.

  On the other hand, as shown in FIG. 13, a curtain width direction dimension (hereinafter referred to as a width dimension) is provided at the center or substantially the center in the curtain width direction (left-right direction in FIG. 13) on the back surface 32 </ b> B of the curtain body 32. ) Is provided with a large number of hook-shaped male engagement elements 122 having an inverted triangular shape that gradually decreases in the closing movement direction of the shutter curtain 20. The pointed end of the male engagement element 122 having the inverted triangular shape is located at a position far away from the upper end of the upper bag part 34A, while the bottom part of the male engagement element 122 is the curtain body 32. Is located near the end of the shutter curtain 20 in the opening movement direction. Further, the male engagement element 122 is symmetric or substantially symmetric with respect to a straight line 32 </ b> L extending in the opening / closing direction of the shutter curtain 20 through a midpoint 32 </ b> M that is the center position in the curtain width direction of the curtain body 32. have.

  As shown in FIGS. 12 and 13, the overall shape of the male engagement element 122 on the back surface 32B is the same as or substantially the same as the female engagement element 121 on the front surface 32A.

  The position in the curtain width direction where a large number of female engaging elements 121 are provided on the surface 32A of the curtain body 32 is the same as the position in the curtain width direction where a large number of male engaging elements 122 are provided on the back surface 32B of the curtain body 32. Alternatively, the position of the bottom side of the female engagement element 121 on the front surface 32A and the position of the bottom side of the male engagement element 122 on the back surface 32B are misaligned in the opening movement direction of the shutter curtain 20, although they are substantially the same. is doing. That is, the position of the bottom side in the opening movement direction of the shutter curtain 20 in the male engagement element 122 on the back surface 32B is more than the position of the bottom side in the opening movement direction of the shutter curtain 20 in the female engagement element 121 on the front surface 32A. It is located on the open side of the curtain 20. The distance that the male engaging element 122 is displaced in the opening movement direction of the shutter curtain 20 with respect to the female engaging element 121 is the same as that of the male engaging element 102 and the male engaging element 112 described above. Is a length wound around the winding shaft 24 once. This is because when the curtain main body 32 is wound around the winding shaft 24, the bottom side portion of the male engagement element 122 on the back surface 32B and the bottom side portion of the female engagement element 121 on the front surface 32A are just overlapped and engaged. This is to get you started.

  As described above, a large number of female engagement elements 121 provided on the front surface 32A of the curtain body 32 and a large number of male engagement elements 122 provided on the back surface 32B of the curtain body 32 constitute the curtain body 32 of the shutter curtain 20. The contact / separation means 120 for connecting and separating the front surface 32A as one surface and the back surface 32B as the other surface constitutes the contact / separation means 120. The contact / separation means 120 is connected to the surface 32A of the curtain body 32 and the curtain body 32. This is an engagement / disengagement means for engaging and disengaging the rear surface 32B. The contact / separation means 120 serves as a brake means for braking the closing movement of the shutter curtain 20.

  FIG. 14 is a perspective view of the shutter device showing the middle of the shutter curtain 20 closing and moving in the direction of arrow C, as in FIG. 7 described above.

  When the curtain body 32 is wound around the winding shaft 24, the surface 32A and the back surface 32B of the curtain body 32 are wound while facing each other and overlapping, and at this time, a large number are provided on the surface 32A of the curtain body 32. Since the female engagement element 121 and the large number of male engagement elements 122 provided on the back surface 32B of the curtain body 32 also overlap each other, the female engagement element 121 and the male engagement element 122 are engaged with each other. .

  On the other hand, as shown in FIG. 14, when the shutter curtain 20 is closed and moved by its own weight including the seat plate 31, the surface of the curtain body 32 that is opposed to and overlapped with each other and is wound around the winding shaft 24. The curtain body 32 is fed out from the take-up shaft 24 while the separation between 32A and the back surface 32B is separated. When the portion of the curtain body 32 where the contact / separation means 200 is provided is unwound from the take-up shaft 24, the female engagement of the surface 32A that has been engaged by being taken up by the take-up shaft 24. At this time, the engaging force between the female engaging element 121 on the front surface 32A and the male engaging element 122 on the back surface 32B is engaged. The braking force against the closing movement of the shutter curtain 20 is obtained.

  As described above, in the present embodiment, the shapes of the female engagement element 121 on the front surface 32A and the male engagement element 122 on the back surface 32B are reversed such that the width dimension gradually decreases toward the opening movement direction of the shutter curtain 20. It is a triangle.

  As shown in FIG. 14, the female engagement element 121 on the surface 32A is similar to the female engagement element 101 and the female engagement element 111 described above, and the upper bag portion 34A on the surface 32A of the curtain body 32 is formed. It is not provided in a location from the vicinity of the upper end to the end of the shutter curtain 20 in the opening movement direction (the vicinity of the seat plate 31). Further, although not shown, the female engagement element 121 on the surface 32A is not provided near the end portion of the surface 32A of the curtain body 32 in the opening movement direction of the shutter curtain 20. This is the same as the above-mentioned contact / separation means 100 and contact / separation means 110 when the shutter curtain 20 reaches the fully closed position after the shutter curtain 20 is fed from the take-up shaft 24 and reaches a constant moving speed. This is to apply braking to the closing movement of the shutter curtain 20 until the front of the shutter.

  In the present embodiment described above, after a while from when the shutter curtain 20 (curtain body 32) is drawn out from the winding shaft 24, a braking force for closing movement of the shutter curtain 20 starts to be applied. Since the portion where the female engagement element 121 of this type is engaged with the male engagement element 122 of the back surface 32B is small, the braking force against the closing movement of the shutter curtain 20 is small. However, as the opening movement of the shutter curtain 20 proceeds, the portion where the female engagement element 121 on the front surface 32A engages with the male engagement element 122 on the back surface 32B gradually increases. The braking force gradually increases.

  Note that the shutter curtain 20 has a shape in which the width dimension of the female engagement element 121 on the front surface 32A and the male engagement element 122 on the back surface 32B is gradually reduced toward the opening movement direction of the shutter curtain 20. The braking force for the closing movement of can be initially increased and gradually decreased.

  In this embodiment, one contact / separation means 120 is extended on the front surface 32A and the rear surface 32B, but a plurality of contact / separation means 120 may be extended. When a plurality of contact / separation means 120 are extended, a plurality of contact / separation means are provided so that the winding diameter of the winding shaft 24 when the curtain body 32 is wound around the winding shaft 24 becomes more uniform. More preferably, 120 is arranged symmetrically or substantially symmetrically with respect to the curtain width direction with reference to the midpoint 32M which is the center position in the curtain width direction of the shutter curtain 20.

  As described above, according to this embodiment as well as the above-described contact / separation means 100 and contact / separation means 110, the shutter device serving as an opening / closing device with a brake means can be simplified in structure.

  In the embodiment described above with reference to FIGS. 5 to 14, a large number of pile-shaped female engagement elements are provided on the surface 32 </ b> A of the curtain body 32, and a large number of hook-shaped male engagement elements are provided on the back surface 32 </ b> B of the curtain body 32. In contrast to this, a large number of hook-shaped male engagement elements are provided on the surface 32A of the curtain body 32, and a large number of pile-shaped female engagement elements are provided on the back surface 32B of the curtain body 32. There may be.

  15 and 16, the surface 32 </ b> A which is one surface of the curtain body 32 and the back surface 32 </ b> B which is the other surface are connected by the contact / separation means 100 which is the brake means according to the embodiment shown in FIGS. 5 to 8. It is a figure which shows one Embodiment of the connection prevention means for preventing the connection of at least one part of the part to perform.

  FIG. 15 is a development view of the surface 20A of the shutter curtain 20 as in FIG. 5, and a pair of left and right sheets serving as connection blocking means for the pair of left and right female engaging elements 101 constituting the contact / separation means 100. FIG. 16 is a view showing a state before the connection blocking sheet 130 formed of a flat face material is attached, and FIG. 16 shows a state where the connection blocking sheet 130 is attached to the pair of left and right female engagement elements 101 in FIG. FIG.

  As shown in FIG. 15, the shape of each connection prevention sheet 130 is such that the length of the shutter curtain 20 in the opening / closing movement direction is lower than the left and right female engagement elements 101 on the surface 32 </ b> A of the curtain body 32. The length in the curtain width direction (width dimension) is the same as the width dimension of the curtain body 32 of the left and right female engaging elements 101, as shown in FIGS. It is almost the same.

  On the back surface 130B, which is one of the front and back surfaces of each connection prevention sheet 130, the same hook-shaped male engagement element 132 as the male engagement elements 102 provided on the back surface 32B of the curtain body 32 is provided. A large number of male engaging elements 132 are engageable with the female engaging elements 101 provided on the surface 32 A of the curtain body 32. On the other hand, as shown in FIG. 16, the front surface 130 </ b> A that is the other of the front and back surfaces of the connection prevention sheet 130 is a flat surface on which nothing is provided. The front surface 130 </ b> A cannot be engaged with the male engagement element 102 on the back surface 32 </ b> B of the curtain body 32.

  In order to attach the connection preventing sheet 130 to the female engaging element 101 on the surface 32A of the curtain body 32, as shown in FIG. 15, the back surfaces 130B of the left and right connection preventing sheets 130 are directed in the directions of arrows D and E, respectively. The orientation of the male engagement element 132 of the connection preventing sheet 130 is changed so that the male engagement element 132 engages with the female engagement element 101 on the surface 32A of the curtain body 32. Press against. Thereby, since the connection prevention sheet | seat 130 is attached to the female engagement element 101, as FIG. 16 shows, the lower part to which the connection prevention sheet | seat 130 of the female engagement element 101 was attached becomes a flat surface. Therefore, the front surface 130 </ b> A of the connection preventing sheet 130 cannot be engaged with the male engagement element 102 on the back surface 32 </ b> B of the curtain body 32.

  Therefore, when the curtain body 32 is wound around the winding shaft 24, the lower part of the female engagement element 101 to which the connection preventing sheet 130 is attached is the same as the male engagement element 102 on the back surface 32 </ b> B of the curtain body 32. It will be wound up by the winding shaft 24, without engaging.

  Therefore, when the shutter curtain 20 is drawn out from the winding shaft 24, the braking force for the closing movement of the shutter curtain 20 is not generated while the lower part of the female engagement element 101 is drawn out, and the movement of the shutter curtain 20 is not performed. The speed will be accelerated.

  According to this embodiment described above, the connection between the front surface 32A and the back surface 32B of the curtain body 32 of the shutter curtain 20 is prevented without removing at least a part of the contact / separation means 100 already provided on the shutter curtain 20. It becomes possible.

  In the present embodiment, the connection preventing sheet 130 is attached to the lower part of the female engagement element 101 of the contact / separation means 100, but the attachment position may be changed. As a result, the position where the engagement between the female engagement element 101 on the front surface 32A and the male engagement element 102 on the back surface 32B can be changed, and the closing movement of the shutter curtain 20 is braked at an arbitrary position. Can not be.

  Furthermore, in this embodiment, the shape of the connection preventing sheet 130 is a vertically long shape that is long in the opening and closing movement direction of the shutter curtain 20 that covers the lower part of the female engagement element 101 of the contact / separation means 100, but is not limited thereto. Instead, the position may be arbitrarily changed so that the position where braking is not desired for the closing movement of the shutter curtain 20 can be freely changed.

  In the present embodiment, the number of connection blocking sheets 130 attached to the left and right female engagement elements 101 is one, but a plurality of connection prevention sheets 130 that can be attached to the left and right female engagement elements 101 are preliminarily provided. It is also possible to prepare them individually so that the magnitude and position of the braking force for the closing movement of the shutter curtain 20 can be freely changed.

  In the present embodiment, the connection preventing sheet 130 is attached to the female engagement element 101 on the surface 32A of the curtain body 32. On the contrary, the male engagement element on the back surface 32B of the curtain body 32 is provided. It may be attached to 102. In this case, the back surface 130B of the connection preventing sheet 130 is provided with a number of pile-shaped female engagement elements that can be engaged with the male engagement element 102 on the back surface 32B of the curtain body 32.

  17 and 18 are views showing still another embodiment of the brake means shown in FIGS. FIG. 17 is a development view of the surface 32A of the shutter curtain 20 provided with the brake means according to the present embodiment, and FIG. 18 is a cross-sectional view taken along line S17-S17 of FIG. It is a figure which shows the cross section of the opening / closing movement direction of the shutter curtain 20 of a means.

  As shown in FIG. 17, the contact / separation means 200, which is a brake means according to the present embodiment, has the same or substantially the same shape as the above-described contact / separation means 100, that is, a long length in the opening / closing movement direction of the shutter curtain 20. This is a pair of left and right sheet-like magnetic means having a belt-like shape. As shown in FIG. 18, the magnetic pole of the surface 200A, which is one surface of the contact / separation means 200, is an S pole, and is attached to the surface 32A of the curtain body 32 by bonding with an adhesive or the like. The magnetic pole of the back surface 200B, which is the other surface, is an N pole. As described above, the contact / separation means 200 is attached to the surface 32A of the curtain body 32 so that the polarity differs between the surface 32A that is one surface of the curtain body 32 and the back surface 32B that is the other surface. It has become.

  When the curtain main body 32 of the shutter curtain 20 is wound around the winding shaft 24 and moves open, when the front surface 32A and the rear surface 32B of the curtain main body 32 overlap and are stored, they are attached to the front surface 32A of the curtain main body 32. The contact / separation means 200, which is a magnetic means, also overlaps with the curtain body 32 interposed therebetween. At this time, the magnetic poles of the contact / separation means 200 that overlap with the curtain body 32 are opposite to each other. The separating means 200 are attracted by magnetic force. Thereby, the closing movement of the shutter curtain 20 is braked by the attractive force between the overlapping contact / separation means 200.

  In the present embodiment, it is possible to brake the closing movement of the shutter curtain 20 only by attaching the contacting / separating means 200 that is a magnetic means only to the surface 32A that is one surface of the curtain body 32. For this reason, according to the present embodiment, the shutter device which is an opening / closing device with a brake means can be structured and simplified.

  In this embodiment, the contacting / separating means 200, which is a magnetic means, is attached to the front surface 32A of the curtain body 32, but the contacting / separating means 200 may be attached to the back surface 32B of the curtain body 32. The contact / separation means 200 may be attached to both the front surface 32A and the back surface 32B of the curtain body 32.

  FIG. 19 is a perspective view of an elevator disaster prevention shutter device that is an opening / closing device with a brake means according to an embodiment of the second invention. Like FIG. 7, the shutter curtain 20 is in the direction of arrow F. It is a figure which shows the middle of moving to close.

  As shown in FIG. 19, a pair of sheet-like left and right belt-like members 300 having a long length in the opening / closing movement direction of the shutter curtain 20 and made of the same material as the curtain main body 32 are formed into the shutter curtain 20. It arrange | positions so that the surface 20A of this may be opposed. One end of each belt-like member 300 (an end portion in the closing movement direction of the shutter curtain 20) is coupled to the surface 20A side of the shutter curtain 20 on the seat plate 31 of the shutter curtain 20 with a screw or an adhesive. On the other hand, the other end of each belt-like member 300 (the end portion in the opening movement direction of the shutter curtain 20) is coupled to a take-up shaft 324 that winds and feeds each belt-like member 300 with a screw or an adhesive. The take-up shaft 324 is horizontally disposed diagonally above the elevator hall 1 with respect to the take-up shaft 24 that takes up and feeds out the shutter curtain 20. For this reason, the pair of left and right belt-like members 300 are opening / closing braking members that move in the opening / closing movement direction of the shutter curtain 20 as the shutter curtain 20 opens / closes.

  The take-up shaft 324 that winds and feeds the pair of left and right strip members 300 has the same internal structure as the take-up shaft 24 that winds and feeds the shutter curtain 20. That is, the winding shaft 324 is rotatably supported by the side plate portions 325 and 326 which are support members on both the left and right sides. The take-up shaft 324 is a hollow shaft, and a first shaft-like body (not shown) is provided at one end portion thereof, and a second shaft-like body 346 is provided at the other end portion. The body is supported by one side plate portion 326, and the second shaft-shaped body 346 is supported by the other side plate portion 325. A return coil spring or the like (not shown) is accommodated in the take-up shaft 324, and one end of the return coil spring is a member that constitutes the take-up shaft 324 and rotates integrally with the take-up shaft 324. The other end is coupled to a stationary member that does not rotate integrally with the winding shaft 324.

  When the shutter curtain 20 that has been fully opened closes and moves while rotating the winding shaft 24 by its own weight including the weight of the seat plate 31, one end of the pair of left and right belt-like members 300 is pulled by the seat plate 31 and the winding shaft. 324 also rotates forward, and the belt-shaped member 300 is fed from the take-up shaft 324. Further, when the shutter curtain 20 is closed and moved, a return spring force is accumulated in the return coil spring 50 housed and arranged in the take-up shaft 24. The return spring force is also accumulated in a return coil spring (not shown) housed in the storage.

  After the shutter curtain 20 reaches the fully closed position, when the shutter curtain 20 is lifted by the handle members 33 and 37, the take-up shaft 24 rotates in the reverse direction by the return spring force accumulated by the return coil spring 50. Take 20 up. At this time, the take-up shaft 324 is also rotated in reverse by the accumulated return spring force of a return coil spring (not shown), and the belt-like member 300 is taken up.

  A large number of pile-shaped female engagement elements 311 are provided on the surface 300A, which is one of the front and back surfaces of each band-shaped member 300, while the other surface of the front and back surfaces of the band-shaped member 300 is the other surface. The back surface 300B is provided with a large number of hook-shaped male engaging elements 312 that can be engaged with and detached from the female engaging elements 311 on the front surface 300A. Therefore, the female engagement element 311 on the front surface 300A and the male engagement element 312 on the back surface 300B form contact / separation means 310 for connecting and separating the front surface 300A of the belt-shaped member 300 and the back surface 300B of the belt-shaped member 300. The contact / separation means 310 is an engagement / disengagement means for engaging and disengaging the front surface 300A of the belt-shaped member 300 and the back surface 300B of the belt-shaped member 300.

  When each belt-shaped member 300 is wound around the winding shaft 324, the front surface 300 </ b> A that is one surface of the belt-shaped member 300 and the back surface 300 </ b> B that is the other surface are connected by the contact / separation means 310. On the other hand, when each belt-shaped member 300 is unwound from the take-up shaft 324, the front surface 300A and the back surface 300B of the belt-shaped member 300 connected by the contact / separation means 310 are separated. For this reason, the closing movement of the shutter curtain 20 is braked by the engagement force between a large number of female engaging elements 311 provided on the front surface 300A of the overlapping belt-like member 300 and a large number of male engaging elements 312 provided on the back surface 300B. Will be. For this reason, in this embodiment, the contact / separation means 310 is a brake means.

  In the present embodiment described above, one end of a belt-like member 300 as an opening / closing braking member is attached to the seat plate 31 of the existing disaster prevention shutter device for an elevator door, and the take-up shaft 324 that winds and feeds the belt-like member 300 and It is possible to apply braking to the closing movement of the shutter curtain 20 only by installing the left and right side plate portions 325 and 326 that support the winding shaft 324. For this reason, according to the present embodiment, as in the above-described embodiment according to the first invention, the shutter device which is an opening / closing device with a brake means can be structured and simplified.

  FIG. 20 shows a brake means according to an embodiment of the third invention. One of a pair of left and right guide rails 21 which are guide members for guiding the opening / closing movement of the shutter curtain 20 (the right side in FIG. 1). It is a partially expanded perspective view of the guide rail 21).

  As shown in FIG. 20, a portion of the surface 32A of the right end portion 32E of the curtain width direction both end portions 32E of the curtain body 32 is opposed to the opening edge portion 21A on the elevator hall 1 side of the guide rail 21. Is attached with a first engagement member 410 formed with a concavo-convex portion 410A having a sawtooth cross-sectional shape in the opening and closing movement direction of the shutter curtain 20. On the other hand, at the portion of the opening edge portion 21A on the elevator hall 1 side of the guide rail 21 that faces the surface 32A of the curtain body 32, there is an uneven portion 420A having a sawtooth cross-sectional shape in the opening / closing movement direction of the shutter curtain 20. A formed second engagement member 420 is attached, and the second engagement member 420 can be engaged with the first engagement member 410. For this reason, the brake means according to this embodiment includes a first engagement member 410 and a second engagement member 420.

  As shown in FIG. 20, the cross-sectional shape of the first engagement member 410 and the second engagement member 420 in the opening / closing movement direction of the shutter curtain 20 is easy to engage when the shutter curtain 20 is closed and moved. When the shutter curtain 20 opens and moves, it is difficult to engage.

  The closing movement of the shutter curtain 20 is performed while the first engagement member 410 and the second engagement member 420 are repeatedly engaged and disengaged. Therefore, in the present embodiment, the engagement between the first engagement member 410 and the second engagement member 420 is a braking force against the closing movement of the shutter curtain 20.

  Both the first engaging member 410 and the second engaging member 420 are formed of synthetic rubber, synthetic resin, or the like. For this reason, when the first engaging member 410 and the second engaging member 420 are engaged with each other. Generation of collision sounds and rubbing sounds that are likely to occur is suppressed. Further, the first engagement member 410 can be attached to and detached from the curtain body 32, and the second engagement member 420 can be attached to and detached from the guide rail 21.

  Although not shown in FIG. 20, the other of the pair of left and right guide rails 21 on the surface 32A of the left end 32E of the curtain width direction both ends 32E of the curtain body 32 (the left side in FIG. A first engagement member 410 is also attached to a portion of the guide rail 21) facing the opening edge 21A on the elevator hall 1 side, while the other of the pair of left and right guide rails 21 (on the left side in FIG. 1) A second engagement member 420 is also attached to a portion of the opening edge 21A on the elevator hall 1 side of the guide rail 21) facing the surface 32A of the curtain body 32.

  In the present embodiment described above, the first engagement member 410 is attached to the curtain body 32 of the shutter curtain 20 and the second engagement member 420 is attached to the guide rail 21 to brake against the closing movement of the shutter curtain 20. Can be applied. For this reason, according to the present embodiment, as in the above-described first and second embodiments, the shutter device that is an opening / closing device with a brake means can be configured with a simplified structure.

  In this embodiment, although not shown in FIG. 20, braking is performed against the closing movement of the shutter curtain 20 immediately after the shutter curtain 20 starts the closing movement until the shutter curtain 20 reaches the fully closed position. In order to apply, for example, the first engagement member 410 is a portion facing the opening edge 21A on the elevator hall 1 side of the guide rail 21 on the surface 32A of the curtain width direction both ends 32E of the curtain body 32, The curtain body 32 is attached near the end of the shutter curtain 20 in the closing movement direction (for example, near the seat plate 31), and the second engagement member 420 is fully opened at the opening edge 21A of the guide rail 21 on the elevator hall 1 side. May be attached to a portion facing the surface 32A of the curtain body 32 in a state of reaching.

  Further, in order to brake the closing movement of the shutter curtain 20 from the time when the shutter curtain 20 starts to close and reaches a certain moving speed to before the shutter curtain 20 reaches the fully closed position, For example, for example, the first engagement member 410 is a portion facing the opening edge 21 </ b> A on the elevator hall 1 side of the guide rail 21 on the surface 32 </ b> A of the curtain width direction both ends 32 </ b> E of the curtain body 32. Is attached to the vicinity of the end of the shutter curtain 20 in the closing movement direction (for example, near the seat plate 31), and the second engagement member 420 reaches the fully open position at the opening edge 21A of the guide rail 21 on the elevator hall 1 side. The portion facing the surface 32A of the curtain body 32 in a state where the shutter curtain 20 is open and closed Moving direction may be attached to a predetermined middle portion.

  In the present embodiment, the first engagement member 410 can be attached to and detached from the curtain main body 32, and the second engagement member 420 can be attached to and detached from the guide rail 21. Therefore, even if the first engagement member 410 and / or the second engagement member 420 deteriorate (wear or the like), the replacement becomes easy.

  In the present embodiment, the first engagement member 410 has an opening edge 21A on the elevator hall 1 side of the guide rail 21 on the surface 32A of the right end 32E of the curtain width direction both ends 32E of the curtain body 32. The second engagement member 420 is attached to a portion of the opening edge 21A of the guide rail 21 on the elevator hall 1 side facing the surface 32A of the curtain body 32. A first engagement member 410 is attached to a portion of the back surface 32B of the right end 32E of both ends of the curtain width direction of the main body 32 that faces the opening edge 21B of the guide rail 21 on the elevator door 2 side. The second engaging member 4 is provided at a portion of the opening edge 21B on the elevator door 2 side facing the back surface 32B of the curtain body 32. 0 may be the attachment.

  In the present embodiment, the first engagement member 410 is attached to both ends 32E of the curtain body 32 in the curtain width direction, and the second engagement member 420 is attached to the opening edges of the pair of left and right guide rails 21. However, you may make it attach the 1st engaging member 410 and the 2nd engaging member 420 to any one location.

  Further, in the present embodiment, the first engagement member 410 can be attached to and detached from the curtain body 32, and the second engagement member 420 can be attached to and detached from the guide rail 21. However, the first engagement member 410 and / or the second engagement member 420 may be non-removable.

  The present invention is applied to an opening / closing device provided with an opening / closing body that performs a closing movement and an opening movement, and having a brake means for braking the movement of one of these movements. Can do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an entire disaster prevention shutter device for an elevator, which is an opening / closing device with brake means according to an embodiment of the first invention. It is the S2-S2 sectional view taken on the line of FIG. It is a longitudinal cross-sectional view of the shutter device for disaster prevention for elevators shown in FIG. It is sectional drawing which shows the internal structure of a winding shaft. It is a development view of the surface of the shutter curtain provided with the brake means provided in the shutter device for disaster prevention for elevators shown in FIG. It is an expanded view of the back surface of the shutter curtain provided with the brake means with which the shutter device for disaster prevention for elevators shown by FIG. 1 was provided. It is a perspective view which shows when the shutter curtain of the shutter device for disaster prevention for elevators shown in FIG. 1 is closing and moving. It is a perspective view which shows when the shutter curtain of the shutter device for disaster prevention for elevators shown in FIG. 1 has reached the fully closed position. FIG. 6 is a development view of the surface of a shutter curtain provided with brake means according to another embodiment, and is a view similar to FIG. 5. It is an expanded view of the back surface of the shutter curtain provided with the brake means which concerns on another embodiment, and is a figure similar to FIG. It is a figure which shows when the shutter curtain 20 provided with the brake means which concerns on another embodiment is closing and moving, and is a figure similar to FIG. FIG. 6 is a development view of the surface of a shutter curtain provided with brake means according to still another embodiment, and is a view similar to FIG. 5. It is an expanded view of the back surface of the shutter curtain provided with the brake means which concerns on further another embodiment, and is a figure similar to FIG. It is a figure which shows when the shutter curtain 20 provided with the brake means which concerns on another another embodiment is closing and moving, and is a figure similar to FIG. In FIG. 5, it is a figure which shows before attaching a connection prevention means to a brake means. In FIG. 5, it is a figure which shows a time when the connection prevention means is attached to the brake means. FIG. 6 is a development view of the surface of a shutter curtain provided with brake means according to still another embodiment, and is a view similar to FIG. 5. It is the S18-S18 sectional view taken on the line of FIG. It is a perspective view of the shutter device for disaster prevention for elevators which is an opening / closing device with brake means according to one embodiment of the second invention. It is a partially expanded perspective view of the brake means which concerns on one Embodiment of 3rd invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 20 Shutter curtain which is an opening / closing body 21 Guide rail which is a guide member 24 Winding shaft 32A The surface which is one side of the curtain main body which comprises a shutter curtain 32B The back surface which is the other side of the curtain main body which comprises a shutter curtain 32E Shutter End portions 100, 110, 120, 200, 310 of the curtain body constituting the curtain Contacting / separating means 101, 111, 121, 311 as brake means Female engaging elements 102, 112, 122, 312 Male engaging Joint member 130 Connection prevention sheet 200A which is a connection prevention means 200A Surface 200B which is a surface having one polarity of the magnetic means which is the contact / separation means 300B Back surface which is a surface which has the other polarity of the magnetic means which is the contact / separation means 300 The strip-shaped member 300A which is one surface of the strip-shaped member 300 B Back surface that is the other surface of the belt-like member 324 Winding shaft that is a support member that supports the other end of the open / close braking member 410 First engagement member 410A Concavity and convexity 420 Second engagement member 420A Concavity and convexity

Claims (10)

In an opening / closing device with brake means, comprising brake means for braking one of the opening movement and closing movement of the opening / closing body that can be opened and closed,
The opening / closing body is a shutter curtain in which the downward movement is a closed movement and the upward movement is an open movement,
The shutter curtain is opened and closed by the forward / reverse rotation of a winding shaft for winding and unwinding the shutter curtain,
The shutter curtain moves to the fully closed position by its own weight, and the shutter curtain that has reached the fully closed position is lifted and moved to open.
Said brake means is provided on at least one surface of the front and back surfaces of the shutter curtain, connecting said one surface and the other surface of the shutter curtain is composed of a contact and separation means for separating ,
When the shutter curtain is opened and moved, the shutter curtain is wound around the winding shaft while the one surface and the other surface of the shutter curtain face each other and overlap each other. By means, the one surface of the shutter curtain and the other surface are connected,
When the shutter curtain is closed and moved, the one surface and the other surface of the shutter curtain, which overlap each other and are wound around the winding shaft, are separated from each other. An opening / closing device with brake means , wherein the connection force between the one surface and the other surface in the connected state is a braking force against the closing movement of the shutter curtain . 2. The opening / closing device with brake means according to claim 1, wherein the contact / separation means extends in a direction including a component in the opening / closing movement direction of the shutter curtain . In the brake unit with switchgear according to claim 2, the width dimension in a direction orthogonal to the opening and closing movement direction of the shutter curtain of the moving means may be towards the closing movement direction of the shutter curtain has been gradually reduced An opening / closing device with a brake means. 4. The opening / closing device with brake means according to claim 2, wherein there are a plurality of contact / separation means, and each of the contact / separation means is one of the shutter curtains in a state in which the shutter curtain is opened and reaches a movement limit. The shutter curtain opens at a portion where the one surface and the other surface are separated by performing the closing movement until the shutter curtain reaches the closing movement limit in a portion where the other surface overlaps the other surface. The portion extending away from the end portion in the moving direction extends from the portion separated from the end portion in the closing movement direction of the shutter curtain without crossing each other, and these contacting / separating means include the shutter the reference to the central position of the shutter curtain width direction orthogonal to the opening and closing movement direction at the curtain shutter curtain Brake means equipped retracting apparatus characterized by being arranged symmetrically, or substantially symmetrically per width direction. 5. The opening / closing device with brake means according to claim 1, wherein the contact / separation means is a male type provided in a large number on one of the one surface and the other surface of the shutter curtain . An opening / closing device with brake means, comprising an engaging element and female engaging elements provided on the other side. 6. The opening / closing device with a brake means according to claim 5, wherein the contact means prevents the connection of at least a part of the part where the one surface and the other surface of the shutter curtain are connected by the contact / separation means. The connection blocking means is a face material, and one of the front and back surfaces of the face material is provided with the one engaging element provided in a large number on the one surface of the shutter curtain. It is connectable, and the other surface of the front and back surfaces of the face material cannot be connected to the other engaging element provided on the other surface of the shutter curtain. Opening and closing device with brake means. 5. The opening / closing device with brake means according to claim 1, wherein the contacting / separating means is provided on at least one of the one surface and the other surface of the shutter curtain. An opening / closing device with a brake means, wherein the one means and the other face of the shutter curtain are magnetic means having different polarities. In an opening / closing device with brake means, comprising brake means for braking one of the opening movement and closing movement of the opening / closing body that can be opened and closed,
The opening / closing body is a shutter curtain in which the downward movement is a closed movement and the upward movement is an open movement,
The shutter curtain is opened and closed by the forward / reverse rotation of a winding shaft for winding and unwinding the shutter curtain,
The shutter curtain moves to the fully closed position by its own weight, and the shutter curtain that has reached the fully closed position is lifted and moved to open.
It said brake means has one end coupled to the shutter curtain, the other end is constituted by closing the braking member to move to open and close the moving direction of the shutter curtain with the opening and closing movement of the shutter curtain is coupled to the support member, At least one of the front and back surfaces of the opening / closing braking member is provided with contact / separation means for connecting and separating the one surface and the other surface of the opening / closing braking member. The means connects the one surface of the opening / closing braking member with the other surface when the shutter curtain moves to open , and connects the opening / closing braking member connected when the shutter curtain moves to close. one surface and said other surface is separated, this time, the connection force of the one surface that was in the connected state and said other surface by said moving means , Brake means with switchgear, characterized in that the braking force applied to the closing movement of the shutter curtain. 9. The opening / closing device with brake means according to claim 8, wherein the opening / closing braking member is a belt-like member having a long length in the opening / closing movement direction of the shutter curtain, and the support member to which the other end of the belt-like member is coupled is The brake is a winding shaft that is horizontally disposed obliquely above the winding shaft for winding and unwinding the shutter curtain and that rotates forward and backward to wind and unwind the belt-like member. Switchgear with means. The switchgear with a brake means according to any one of claims 1 to 9 , wherein the shutter curtain is a shutter curtain for disaster prevention for forming a disaster prevention zone by reaching a fully closed position. Opening and closing device with brake means.

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