JP2001254558A - Door device for emergency escape - Google Patents

Abstract

(57) [Summary] PROBLEM TO BE SOLVED: To simplify a locking mechanism, an operation conversion mechanism, etc. incorporated in a door frame in an internally assembled emergency escape door device in which a locking mechanism is incorporated in the door frame. To reduce the overall cost. SOLUTION: Inside a vertical frame 3a, a pair of upper and lower lock bolts 10, an input shaft 12, and a pair of conversion arms for converting a rotation operation of the input shaft 12 into a reciprocating operation and transmitting the reciprocating operation to the lock bolts 10. 15 and 16. A bar handle 4 that swings back and forth is provided on one side of the door 3,
The support is provided by a pair of left and right handle shafts 26 and an arm 27 attached to a. The handle shaft 26 reciprocates with the bar handle 4. This operation is transmitted to the conversion arms 15 and 16 via the input shaft 12, and the lock bolts 10 and 11 are moved in and out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency escape door device which is provided separately from a regular entrance for an emergency. This type of door device is installed in a place where many people gather, such as a theater or a public hall, or installed on a platform for getting on and off the station with a door that opens and closes automatically, and is used for emergency escape from trains. You.

[0002]

2. Description of the Related Art A door apparatus of this type includes a handle, a lock bolt that is engaged with and disengaged from an opening frame, and an operation conversion mechanism that converts the operation of the handle into an operation in the direction of engagement and disengagement of the lock bolt. The structure can be seen in Gremon tablets.
Regarding the locking structure, there are an imposition type in which all structures are assembled on the surface of the door, and an inner assembly type in which most structures other than the handle are incorporated inside the vertical frame of the door. JP-A-54-928
No. 98 is an example of the former, and the latter is disclosed in
-51378, JP-A-53-127093, and JP-B-63-15429.

[0003]

Most of the internal lock structure is incorporated in the vertical frame of the door, so that it is hard to be tampered with in appearance. On the other hand, assembling the locking mechanism inside the vertical frame requires much labor. The overall structure of the locking device including the operation conversion structure is complicated, and the overall cost of the door device is high. If you release the handle after opening the door, the lock bolt will return to the locked position in conjunction with the return operation of the handle.Depending on the structure of the opening frame, the lock bolt may be closed when the door is closed. May collide with the opening frame and be deformed.

[0004] It is an object of the present invention to simplify a locking mechanism incorporated in a vertical frame of a door, an operation conversion structure, and the like.
An object of the present invention is to provide an emergency escape door device that can reduce the overall cost by that much. Another object of the present invention is that a bar handle is provided on one side of the door, and when the bar handle is pressed toward the door in an emergency, the lock bolt can be maintained in the unlocked state, and when the door is closed after the emergency escape. Another object of the present invention is to provide an emergency escape door device that can automatically return a lock bolt to a locked state. Another object of the present invention is to easily assemble the handle lever protruding from the outer surface of the door with respect to the locking mechanism in the door frame. It is an object of the present invention to provide a door device for emergency escape in which a handle lever can be easily assembled.

[0005]

As shown in FIG. 2, the door device according to the present invention has a locking mechanism incorporated in the vertical frame 3a of the door 3, and a locking mechanism arranged on one side of the door 3 to unlock the locking mechanism. And a bar handle 4 for operation. The locking mechanism comprises a pair of upper and lower lock bolts 10 and 11 which are guided and supported so as to be vertically slidable as shown in FIGS.
The input shaft 12 is rotated by the lock shaft 10 and the rotation of the input shaft 12 is converted into a vertical motion by the
And an operation conversion mechanism for transmitting the information to the user. As shown in FIGS. 1 and 6, the bar handle 4 includes a pair of left and right handle shafts 26 rotatably supported by left and right vertical frames 3a, a handle body 28 crossing one surface of the door 3, a handle body 28 And a pair of arms 27 for connecting the handle shaft 26.
The handle main body 28 is connected to the input shaft 12 via the arm 27 and one of the handle shafts 26, and reciprocates between a standby position away from the face wall of the door 3 and an operation position approaching the face wall of the door 3. It is pivotally supported so that it can be held, and is held at a standby position by a spring 25.

As shown in FIG. 4, the motion conversion mechanism is composed of a pair of conversion arms 15 and 16 which are respectively supported so as to be swingable and which are connected to swing in opposite directions. Operation arms 15a and 16a of each conversion arm 15 and 16
Are connected to the upper and lower lock bolts 10 and 11 so as to be interlocked with each other, and connect one of the conversion arms 15 to the input shaft 1.
Connect to 2.

[0007] Between one of the pair of lock bolts 10 and 11 and the vertical frame 3a, the lock bolt 10 is unlocked as shown in FIG.
And a reset mechanism 14 for unlocking the lock 13 in conjunction with the closing operation of the door 3 after opening.

[0008] As shown in FIGS. 8 to 10, the lock device 13 includes a lock arm 44 pivotally supported so as to be able to move toward and away from the lock bolt 10, and swings the lock arm 44 toward the lock bolt 10. Urging spring and lock bolt 10
And a lock portion 45 that engages with a lock claw 46 of the lock arm 44. The reset mechanism is vertical frame 3
a trigger rod 49 which is guided and supported so as to be able to slide back and forth along a, a spring 50 for urging the trigger rod 49 to abut on the opening frame 2, and a trigger rod 49
Is operated by the opening frame 2 against the spring 50, and the release tool 51 moves together with the trigger rod 49 to release the lock arm 44.

As shown in FIGS. 1 and 5, the handle main body 28 is supported by a pair of left and right arms 27 so as to be capable of tilting forward and backward, and is erected and held by a spring 41. The one handle shaft 26 and the input shaft 12 are rotatably connected with each other via first concave / convex engagement pieces 30 and 31 provided at respective shaft ends.
As shown in FIG. 6, both handle shafts 26 and arms 27 can be rotated together with each other via second concave / convex engagement pieces 32 and 33 provided at respective connection ends, and can be attached and detached in a direction perpendicular to the rotation axis. Connect to One arm 27 and handle shaft 2
6, and the other arm 27, the handle shaft 26, and the input shaft 12 are fastened and fixed inseparably in the axial direction by screws 37 screwed from the side of the arm 27, respectively.

As shown in FIGS. 11 and 12, a lock 54 is mounted on the vertical frame 3a on the side of the door facing the bar handle 4 with the door 3 interposed therebetween. A release arm 56 is attached to the lock shaft 55. A passive piece 57 is fixed to the peripheral surface of the lock bolt 11 facing the release arm 56. By unlocking the lock 54 with a key, the lock bolt 11 can be unlocked by the unlocking arm 56 via the passive piece 57.

[0011]

The handle body 28 is pivotally supported by a pair of left and right handle shafts 26 so as to be able to swing back and forth.
Of the input shaft 12 via one handle shaft 26.
Therefore, the mechanisms and components incorporated in the vertical frame 3a of the door 3 can be limited to only the operation conversion mechanism after the lock bolts 10 and 11 and the input shaft 12. That is, since the bar handle 4 also functions as a mechanism for converting the handle operation into the rotation operation of the input shaft 12, the number of mechanical components incorporated in the vertical frame 3a is reduced by that much, and this type of door device The overall structure can be simplified, and the cost required for manufacturing can be reduced.

As the operation conversion mechanism, a pair of sector-shaped gears partially formed with gear teeth, a link mechanism, and the like can be applied, but a pair of conversion arms 15.
According to the locking mechanism using the operation conversion element 16 as the operation conversion element, the conversion arm 15.
16 can be formed at lower cost, and the structure can be simplified as compared with the case where a link mechanism is used as an operation conversion element. That is,
The operation reliability can be improved while simultaneously simplifying the structure and reducing the cost.

A lock device 13 for holding the lock bolt 10 in the unlocked state and a reset mechanism 14 for unlocking the lock device 13 in conjunction with the closing operation of the door 3 after the emergency escape. According to the door device added to the above, at the time of emergency escape, the lock bolt 10
This prevents the lock bolts 10 and 11 from returning to the locked state and ensures that the lock bolts 10 and 11 collide with the opening frame 2 and deform when the door 3 is closed in a crowded situation. Can be prevented. Further, when the emergency escape is completed, the door 3
When the closing operation is performed, the reset mechanism 14 is operated to unlock the lock 13, the lock bolts 10 and 11 are returned to a state where they can be locked and engaged with the opening frame 2, and the locking mechanism can be reset. It is not necessary to take any extra work for resetting the locking mechanism, and the usability of this type of door device can be improved.

The lock 13 is constituted by a lock arm 44 pivotally supported and a spring or the like.
According to the lock structure in which the lock bolt 10 is directly engaged and held at the time of unlocking, the number of parts for holding the lock bolt 10 in lock can be minimized, and the manufacturing cost can be suppressed. Further, the reset mechanism 14 is connected to the trigger rod 49.
, A spring 50, and a release tool 51 that moves together with the trigger rod 49, and in the closed state where the trigger rod 49 is retracted by the opening frame 2, the lock arm 4.
According to the reset structure in which the lock member 4 is unlocked by the release tool 51, the lock structure and the reset structure can be organically connected to each other, so that both structures can be made compact and with a minimum number of parts. Both structures and the trigger rod 49 can be assembled into the provided internal gap without any trouble.

The arm 27 and the handle shaft 26 for pivotally supporting the handle main body 28 and the handle shaft 26 and the input shaft 12 are respectively connected to the first concave / convex engagement pieces 30 and 31 and the second
The rotatable connection via the concave / convex engagement pieces 32 and 33 is performed by assembling a locking mechanism including the input shaft 12 in the vertical frame 3a in advance and connecting the bar handle 4 to the vertical frame 3a and the input shaft 12a.
This is to allow post-assembly for. More specifically, when assembling the left and right handle shafts 26 to the vertical frame 3a, one of the handle shafts 26 is joined to the input shaft 12 to form the first concave / convex engaging pieces 30 and 31.
The shafts 12 and 26 can be rotatably connected together just by fitting and engaging each other. Further, by connecting the left and right arms 27 that support the handle main body 28 to the handle shaft 26 via the second concave / convex engagement pieces 32 and 33,
The handle body 28 can be joined and fixed to the left and right handle shafts 26 without any trouble.

As described above, according to the door device in which the left and right handle shafts 26 are assembled to the vertical frame 3a and the right and left arms 27 are engaged with the shaft ends in a concave and convex manner, the bar projecting from one side of the door 3 is provided. The handle 4 and the door 3 can be handled separately. At the construction site, after assembling the handle shaft 26 to the vertical frame 3a, the left and right arms 27 are engaged and connected to the handle shaft, and the arm 27, the handle shaft 26 and the input shaft 12 are fastened with the screw 37. Only by this, anyone can easily assemble the bar handle 4 with the pre-assembled locking mechanism.

In addition to the bar handle 4, the lock bolt 1
According to the door device to which the lock 54 for unlocking the door 1 is added, the lock bolt 11 can be unlocked from the side of the door surface facing the bar handle 4 with the door 3 interposed therebetween. A well-known clerk can open the door device and accurately guide people to escape.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated example shows a case in which the emergency escape door device according to the present invention is disposed adjacent to an automatic opening / closing door provided on a platform of a station. In FIG.
Is an entrance door 1 that opens and closes automatically in the left-right direction like a sliding door. Emergency escape door devices are provided facing both left and right sides of these doors 1. When a train or the like stops at a position shifted forward or backward from a prescribed position, a passenger opens the door position and moves to the platform. You can escape.

The door device includes an opening frame 2, a door 3 pivotally supported on the opening frame 2 via a pivot range 5, and a lock incorporated in a vertical frame 3 a on the swinging tip side of the door 3. It includes a locking mechanism and a bar handle 4 for unlocking the locking mechanism. The bar handle 4 is provided facing the track side of the door 3. In an emergency, the door 3 is opened and swung toward the platform.

In FIG. 3, the locking mechanism comprises three frames 6, 7, 8 fixed to the inner surface of the vertical frame 3a in three upper and lower stages, respectively.
And an upper lock bolt 10 mainly guided and supported by the upper frame 6 so as to be vertically slidable, a lower lock bolt 11 mainly guided and supported by the lower frame 8 so as to be vertically slidable, and assembled to the center frame 7. Input shaft 12
An operation conversion mechanism for converting the rotation operation of the input shaft 12 into a reciprocating operation in the vertical direction and transmitting the reciprocating operation to the lock bolts 10 and 11; a lock device 13 and a reset mechanism 14 that are assembled to the upper frame 6; It is composed of a lock mechanism and the like to be assembled to the device.

In FIG. 4, the motion conversion mechanism comprises a pair of bell crank-shaped conversion arms 15 and 16 formed of respective zinc die-cast products. Both conversion arms 15
Reference numeral 16 denotes an operation arm 15a / 1 on one end peripheral surface of each boss.
6a and the interlocking arms 15b and 16b protrude, and a shaft is provided on the other end side of the boss. Each of the arms 15 and 16 is rotatably supported by a bearing hole provided in the central frame 7 and is fixed by a retaining ring to prevent the arm from falling off. Further, the interlocking arms 15b and 16b of both arms 15 and 16 are connected to the pin 1 of one of the interlocking arms 15b.
7 via the long hole 18 of the other interlocking arm 16b,
The arms 15 and 16 can swing in opposite directions. The operation arm 15a of the upper conversion arm 15 is connected to the upper lock bolt 10 via a pin 19. The operation arm 16a of the lower conversion arm 16 is connected to the lower lock bolt 11 via a pin 20. Upper conversion arm 1
5 and the center frame 7, a conversion arm 15 is
, A torsion coil-shaped spring 21 is provided for urging the upper and lower lock bolts 10 and 11 upward and downward by urging them to rotate clockwise. The upper conversion arm 15 also serves as the input shaft 12 as shown in FIG.

The upper and lower lock bolts 10 and 11 are connected to connecting shafts 10a and 10a connected to respective operating arms 15a and 16a.
11a, and engagement bolts 10b and 11b guided and supported by the upper frame 6 and the lower frame 8 so as to be slidable up and down.
And adjusting screw shafts 10c and 11c for connecting the two members 10a and 10b and 11a and 11b, respectively. By adjusting the amount of screwing of each of the engagement bolts 10b and 11b into the adjustment screw shafts 10c and 11c, the engagement bolt 10b
The amount of protrusion of 11b from vertical frame 3a can be adjusted. As shown in FIG. 4, the adjustment screw shaft 10c of the upper lock bolt 10
A compression coil type spring 24 for canceling the tilting moment of the bar handle 4 is interposed between the washer received by the nut 23 and the upper wall of the central frame 7. I have. Each operation arm 15
The deviation between the trajectories of the connecting shafts a and 16a and the connecting shafts 10a and 11a is absorbed by making the connecting holes of the operating arms 15a and 16a slightly larger than the diameter of the connecting pins.

As shown in FIGS. 1 and 6, a pair of left and right handle shafts 26 rotatably supported by left and right vertical frames 3a via bushings 25, as shown in FIGS.
A pair of left and right arms 27 connected to the shaft ends of both handle shafts 26, a handle body 28 disposed between the two arms 27, and a square shaft 29 fixed between the lower ends of both arms 27
And passes through the square shaft 29 in the handle main body 28.

The handle shaft 26 is formed of a cylindrical shaft having a flange projecting at one end, and the bush 25 mounted on the vertical frame 3a.
Is inserted and loaded from the outer surface side of the frame, and reciprocates with the forward / backward swing of the handle body 28. In order to transmit this rotation operation to the input shaft 12, one of the handle shafts 2 is used.
Between the shaft end of the input shaft 6 and the shaft end of the input shaft 12, there are provided first concave and convex engaging pieces 30 and 31 which are fitted and engaged with each other as shown in FIG. These engagement pieces each have a fan-shaped projection and a concave portion, and are fitted and engaged in the axial direction to transmit the rotational force to the input roller 12. Similar second concave / convex engagement pieces 32 and 33 are provided at the connection end between the arm 27 and the flange-side end surface of the handle shaft 26. More specifically, a convex piece along the radial line is provided on the handle shaft 26 side, and a concave groove is provided on the arm 27 side.

The arm 27 has a main body 27a which is curved in a partially arcuate shape, and bosses are protruded from one side surface and the other side surface of both ends of the main body portion 27a.
The upper and lower bosses to be joined with the second uneven engagement pieces 32 and 33
Are provided. A shaft portion 34 for supporting the handle body 28 is provided on the lower boss, and a pair of restricting pieces 35 are protruded from the protruding base end thereof. The shaft portion 34
A square hole for receiving the screw hole and the square shaft 29 is formed.

In FIG. 5, the handle body 28 is made of an aluminum material having an elliptical cross section and a drum-shaped tilting hole 38 provided at the center. The tilt hole 38 is provided in the shaft 3 of the arm 27.
4 and a fan-shaped escape groove 40 provided above and below the center hole 39 to receive the restriction piece 35. The handle body 28 is provided within the escape groove 40.
Can be tilted back and forth with respect to the arm 27. Handle body 2
8 is provided with a torsion coil type spring 41 between the square axis 29 passing through the center hole 39 and the relief groove 40 in order to hold the posture of the ellipse 8 so that the plane passing through the major axis of the ellipse is vertical. At 5, the handle body 28 is urged to rotate counterclockwise. Reference numeral 42 denotes a spring receiving pin fixed to the square shaft 29.

After a pair of left and right arms 27 are fixed to the handle body 28 and the square shaft 29, the arms 27 are slid in the diametrical direction with respect to the left and right handle shafts 26, and the second
By joining the concave and convex engaging pieces 32 and 33 and screwing a screw (screw) 37 from the outer surface of each arm 27, one arm 27 and the handle shaft 26 can be connected and fixed inseparably (see FIG. 6). The other arm 27 and handle shaft 26
And the input shaft 12 can be connected and fixed inseparably (see FIG. 1).

In the above assembled state, the arm 27 is curved so as to hang down below the outer surface of the handle shaft 26, and the handle main body 28 is held in such a posture that a plane passing through the long axis of the ellipse is vertical. When the handle main body 28 in this state is pressed in a direction approaching the face wall of the door 3 as shown by the imaginary line in FIG. 5, the bar handle 4 swings downward around the handle shaft 26 to rotate the input shaft 12. Operation.
As a result, the pair of conversion arms 15 and 16 swing in opposite directions to unlock the upper and lower lock bolts 10 and 11. When the handle is pressed, the handle body 28 swings along with the arm 27. At this time, the handle body 28 is gradually tilted upward toward the pusher, and the handle body 28 is moved with the arm 27 to facilitate the pressing operation. It is pivotally supported so as to be able to tilt back and forth within the angle range of the escape groove 40, and is erected and biased by a spring 41. Bar handle 4 in standby state
Tends to swing downward under the moment of its own weight. Overcoming this swing moment, the bar handle 4
A spring 24 is provided between the upper lock bolt 10 and the center frame 7 in order to hold the lock.

When the bar handle 4 is pressed to unlock the upper and lower lock bolts 10 and 11, the door 3 can swing open to the platform side. However, when the pressing force of the handle body 28 is released, both lock bolts 10 and 11
It is pushed back in 4 and switched to the locked position. In order to prevent the self-returning operation of the lock bolts 10 and 11, a lock 13 is provided on the upper frame 6, and the lock 13 is unlocked using the operation when the door 3 is closed into the opening frame 2. A reset mechanism 14 is provided adjacent to the lock 13 for operation.

7 to 10, the lock 13
The lock arm 44 includes a lock arm 44 whose upper end is pivotally supported by the upper frame 6 and a lock portion 45 formed as a circumferential groove on the shaft peripheral surface of the engagement bolt 10b. Lock arm 44
A lock claw 46 that falls into and engages with the lock portion 45 is bent and formed at the rocking tip (lower end). Lock arm 4
A release groove 4 for engaging a release pin 51 to be described later
7 is installed. As shown in FIG. 9, in a state where the lock claw 46 is dropped into and engaged with the lock portion 45, the lock arm 44 receives the engagement bolt 10b in a protruding rod shape against the urging force of the spring 24. 10.11
In the unlocked position.

The reset mechanism 14 is arranged in parallel with the engagement bolt 10b as shown in FIG.
And a spring 50 of a compression coil type that pushes up and urges the trigger rod 49 upward, and a release pin (release tool) 51 fixed to the trigger rod 49. The spring 50 is disposed between the release pin 51 and the inner bottom wall of the upper frame 6.
The release pin 49 is engaged with the release groove 47 of the lock arm 44. At the upper end of the trigger rod 49, a cam surface 52 that is inclined downward in the door closing direction is formed.

When the lock bolts 10 and 11 are engaged with the bolt holes of the opening frame 2, the trigger rod 49
Is received by the opening frame 2 (see FIG. 8).
At this time, one side of the release groove 47 of the lock arm 44 is received by the release pin 51, and the lock claw 46 is held in a posture in which the lock claw 46 faces the peripheral surface of the engagement bolt 10b. When the door 3 is opened in an emergency, the trigger rod 49 first comes out above the opening frame 2 as shown in FIG. At the same time, the trigger rod 49 is pushed up by the spring 50 and slides upward, and the release pin 51 moves along with the release pin 51 in the release groove 47. Even after the release pin 51 comes into contact with the upper end of the release groove 47, the release pin 51 moves upward by receiving the pushing force of the spring 50, and the upward movement causes the lock arm 44 to rotate clockwise in FIG. The pawl 46 falls into and engages with the lock portion 45 of the engagement bolt 10b that has been lowered in the unlocking direction, and is maintained in that state. Thereby, the upper and lower lock bolts 10 and 11 are maintained in the unlocked state, and the trigger rod 49 is maintained in a posture in which the upper end protrudes upward from the upper end of the engagement bolt 10b.

When the door 3 is closed after the evacuation is finished and the situation is cleared, the engaging bolts 10b and 11b respectively pass through the opening frame 2, but the cam surface 52 at the upper end of the trigger rod 49 comes into contact with the opening frame 2. And receive a downward reaction force. Therefore, the trigger rod 49 moves downward against the pushing force of the spring 50 as shown in FIG. 10, contacts the release groove 47 immediately before the lowering is completed, pushes down the lock arm 44, and operates the lock claw 46. And the lock portion 45 is forcibly released. At the same time, the upper lock bolt 10 slides upward under the pushing force of the spring 24, and the lower lock bolt 11 slides downward in conjunction therewith. That is, both the lock bolts 10 and 11 are switched to the state where the reset operation is performed. Accordingly, when the door 3 is completely closed, as shown in FIG.
11 reengages with the opening frame 2 and keeps the door 3 closed.

When necessary, the lock bolts 10 and 11 can be unlocked from the platform side.
A lock mechanism is provided at a lower portion of the platform side frame surface of the vertical frame 3a. The lock mechanism includes a commercially available cylinder lock (lock) 54 fastened and fixed to the lower frame 8 as shown in FIGS. 11 and 12, and a release arm 56 fixed to the lock shaft 55.
And the lower lock bolt 11 corresponding to the release arm 56.
And a passive piece 57 fixed to the engaging bolt 11b.
The release arm 56 is connected to the engaging bolt 11 via a passive piece 57.
A pin 58 for pushing up the b is provided. Passive piece 5
Numeral 7 is a cubic metal block having protruding receiving claws 59 on the front and rear sides of the peripheral surface. The metal block 7 is externally mounted on the engaging bolt 11b and fixed with screws. The reason why the receiving claws 59 are provided on the front and rear is
This is to cope with the difference between the left and right sides.

When a key is inserted into the keyhole of the cylinder lock 54 and rotated, the release arm 56 swings upward and comes into contact with the receiving claw 59 to move the lock bolt 11 through the passive piece 57. Unlock upward. At the same time, the upper lock bolt 10 also unlocks and slides, so that the door 3 can be opened to the platform side. The subsequent operation of the lock 13 and the operation of the reset mechanism 14 are as described above.

In the locking mechanism constructed as described above, all the components of the locking mechanism are assembled in the upper, middle and lower frames 6, 7, 8 and this temporary assembly is attached to the vertical frame 3a. After being inserted into the vertical frame 3a from the lower surface opening 61 side, the engagement bolt 10b
And the trigger rod 49 project from the upper surface of the vertical frame 3a,
The cover 60 is screwed to the lower end of the frame to close the opening. Next, the frames 6, 7, 8 are fastened and fixed with screws screwed from the outer surfaces of the frames, and the protrusion amounts of the lock bolts 10, 11 and the trigger rod 49 are adjusted. After this, the left and right vertical frames 3a
The bar arm 4 is integrated with the door 3 by connecting the left and right arms 27 to the handle shaft 26 finally.

In addition to the above embodiment, the operation conversion mechanism may have a structure in which a pair of sector gears and a link mechanism are used as operation conversion elements. The input shaft 12 only needs to be connected to one of the conversion arms 15 and 16, and may be formed as an independent component separate from the two arms 15 and 16. The spring for holding the handle body 28 at the standby position is provided by the arm 28.
Or between the handle shaft 26 and the vertical frame 3a or the center frame 7, but if provided outside the lock bolt 10 as described in the embodiment, the entire locking mechanism can be assembled. Can be facilitated.

The lock member 13 may be formed by a slide piece that reciprocates. The lock arm 44 in the previous embodiment can be biased by its own spring. First and second concave-convex engagement pieces 30, 31, 32, and 33
Any structure can be used as long as it can be engaged in the axial direction to transmit the rotational force from one to the other. As the tablet 54, a commercially available tablet other than a cylinder tablet can be applied. The handle body 28 does not need to have an elliptical cross section, and a round bar or a hollow frame can be applied. The release tool 51 may be a projection or a projection other than a pin. The release tool 51 does not need to be engaged with the release groove 47, but only needs to be able to forcibly release the lock arm 44 when the trigger rod 49 moves downward. INDUSTRIAL APPLICABILITY The door device of the present invention can be applied as an emergency escape door for a theater or a public hall.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a connection structure of a bar handle.

FIG. 2 is a front view of the emergency escape door device.

FIG. 3 is a longitudinal sectional side view schematically showing a handle structure and a locking mechanism.

FIG. 4 is a sectional view taken along line AA in FIG.

FIG. 5 is a sectional view taken along line BB in FIG. 1;

6 is a vertical sectional front view showing details of a portion C in FIG. 3;

FIG. 7 is a vertical sectional front view showing details of a portion D in FIG. 3;

8 is a sectional view taken along line FF in FIG. 7;

FIG. 9 is a longitudinal sectional side view showing an operating state of the lock device when the door is opened.

FIG. 10 is a vertical sectional side view showing an operation state of a reset mechanism when the door is being closed.

11 is a vertical sectional front view showing details of a portion E in FIG. 3;

FIG. 12 is a sectional view taken along line GG in FIG.

[Explanation of symbols]

 2 Opening frame 3 Door 3a Vertical frame 4 Bar handle 10 Lock bolt 11 Lock bolt 12 Input shaft 13 Locking tool 14 Reset mechanism 15 Conversion arm (upper) 16 Conversion arm (lower) 26 Handle axis 27 Arm 28 Handle body

Claims (6)

[Claims] 1. A lock mechanism that is incorporated in a vertical frame 3a of a door 3 and a bar handle 4 that is arranged on one side of the door 3 and that unlocks the lock mechanism. A pair of upper and lower lock bolts 10 and 11 guided and supported slidably up and down, an input shaft 12 rotated by a bar handle 4, and a rotation operation of the input shaft 12 converted into a vertical operation to lock each lock. The bar handle 4 includes a pair of left and right handle shafts 26 rotatably supported by left and right vertical frames 3a, a handle body 28 crossing one surface of the door 3, and a handle. A pair of arms 27 for connecting a main body 28 and left and right handle shafts 26, wherein the handle main body 28 is connected to the input shaft 12 via the arm 27 and one of the handle shafts 26 and moves away from the face wall of the door 3; Waiting position When, it is pivotally supported to be able to reciprocally swing between a working position close to the wall of the door 3, door apparatus for emergency escape being located held in the standby position by a spring 25. 2. The operation conversion mechanism comprises a pair of conversion arms 15, 16 which are pivotally supported so as to be swingable, and are connected to swing in opposite directions. 2. The emergency escape door device according to claim 1, wherein the upper and lower lock bolts are connected to the upper and lower lock bolts and one of the conversion arms is connected to the input shaft. 3. An unlocked lock bolt 10 is engaged between one of the pair of lock bolts 10 and 11 and the vertical frame 3a to maintain the position of the lock bolt 10 in the unlocked state. The emergency escape door device according to claim 1 or 2, further comprising: a lock device (13) that performs locking and a reset mechanism (14) that unlocks the lock device (13) in conjunction with a closing operation of the door (3) after the door is opened. 4. A lock arm 44 in which the lock member 13 is pivotally supported so as to be movable toward and away from the lock bolt 10, a spring for urging the lock arm 44 to swing toward the lock bolt 10, and a lock. A lock portion 45 provided on the bolt 10 and engaging with a lock claw 46 of a lock arm 44; and a reset mechanism, a trigger rod 49 guided and supported slidably along the vertical frame 3a; A spring 50 for urging the rod 49 to advance toward the opening frame 2.
In the state where the trigger rod 49 is moved in and out of the opening frame 2 against the spring 50, the trigger rod 49
4. The door device for emergency escape according to claim 3, further comprising: a release tool 51 that moves together with the lock arm 44 to unlock the lock arm 44. 5. A handle body 28 is pivotally supported by a pair of left and right arms 27 so as to be capable of tilting back and forth, and is held upright by a spring 41. One of the handle shaft 26 and the input shaft 12 is connected to each shaft end. The two handle shafts 26 and the arms 27 are connected to each other via first concave / convex engagement pieces 30/31 provided at the respective ends. The arm 27 and the handle shaft 26, and the other arm 27, the handle shaft 26, and the input shaft 12 are connected so as to be rotatable along with each other and detachably in a direction orthogonal to the rotation axis. The door device for emergency escape according to claim 3 or 4, wherein the door device is fixed so as to be inseparable in the axial direction by screws (37) screwed from the side of the arm (27). 6. A lock 54 is mounted on the vertical frame 3a on the door surface facing the bar handle 4 with the door 3 interposed therebetween, and a release arm 56 is attached to the lock shaft 55. A passive piece 57 is fixed to the peripheral surface of the lock bolt 11 thus formed, and the lock 54 is unlocked with a key so that the lock bolt 11 can be unlocked by the unlock arm 56 via the passive piece 57. The door device for emergency escape according to claim 3 or 4.