JP2677112B2 - Elevator cab side wall rescue device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator cab side wall rescue device, and more particularly to an improvement of means for locking and unlocking an emergency door provided on a side wall of a cab.

[0002]

2. Description of the Related Art As a conventional side wall rescue exit device for an elevator car of this type, there is a technique disclosed in Japanese Utility Model Laid-Open No. 52-24658. In this technique, a lock means is provided on an emergency door provided on a side wall of a cab, and a key is inserted through a key hole to unlock the lock. Here, the emergency door of the side wall rescue exit device of the elevator cab is
Building Standard Act 1 so that the structure opens to the inside of the car room
Mandatory by Article 29-5, No. 4. Therefore,
In the technique disclosed in Japanese Utility Model Laid-Open No. 52-24658, it is necessary to attach a handle to the emergency door separately in order to open the emergency door inside the cab. Therefore, conventionally, in order to omit the handle and simplify the entire structure, as shown in FIG.
The technique shown in FIG. 12 is adopted.

FIG. 9 is a side view showing a side wall rescue device of an elevator cab as viewed from the inside of the cab. FIG.
FIG. 0 is a cross-sectional view showing a conventional side wall rescue exit device for an elevator cab. FIG. 11 is a plan view showing a bush of a conventional side wall rescue exit device for an elevator cab. FIG. 12 is a sectional view showing a usage state of a conventional side wall rescue exit device for an elevator cab.

In the figure, 1 is a cab room, and 2 is left and right side walls of the cab room 1. Reference numeral 3 denotes an emergency door which is provided on at least one of the left and right side walls 2 and constitutes an emergency exit, and the rear end of which is pivotally attached to the cab 1. 4 is an emergency door 3 on the side wall 2
It is fixed at the boundary with and locks the front end of the emergency door 3,
It is a stopper that prevents the emergency door 3 from being opened to the outside.
As a result, the emergency door 3 can be opened only inside the cab 1. Reference numeral 5 denotes a stepped cylindrical bearing member arranged and fixed on the outside of the emergency door 3. Reference numeral 6 denotes a stepped rotating shaft extending in the left-right direction of the cab 1. The large-diameter inner end portion is rotatably inserted in the small-diameter concave portion of the bearing member 5, and the small-diameter outer shaft. The end portion is penetrated and projected outward from the bearing member 5. Reference numeral 6a is a locking projection that projects over the entire radial direction of the inner end of the rotary shaft 6. Reference numeral 7 denotes a lock plate as a long-sized locking means whose base end is integrally fastened and fixed to the projecting outer end portion of the rotary shaft 6, and the front end portion is locked to the front end of the stopper 4 and As shown by the two-dot chain line in FIG. 12, the restraint position for restraining the opening of the emergency door 3 is rotated approximately 90 degrees from the restraint position to release the engagement with the stopper 4, and the emergency door 3 is opened. Is selectively rotated to and from an open position that allows the. The rotation shaft 6 is positioned with respect to the bearing member 5 so that the locking projection 6a extends in the vertical direction when the lock plate 7 is in the restrained position.

Reference numeral 8 is a key, 8a is a cylindrical shaft portion,
8b is so that the locking projection 6a of the rotating shaft 6 can be fitted therein.
An engaging groove formed at the tip of the shaft portion 8a at a predetermined depth over the entire radial direction, and a pair of hooking projections 8c projecting in the radial direction of the peripheral surface on the base end side for a predetermined distance from the tip of the shaft portion 8a.
Are a pair of handles that protrude in a radial direction from the peripheral surface of the base end portion of the shaft portion 8a. The both hooking protrusions 8c have the engaging groove 8b.
It is arranged at an angular position of about 90 degrees. A bush 9 is inserted and fixed inside the emergency door 3 so as to face the inner end of the rotating shaft 6, and a bush 9 is formed in the bush 9 so as to extend on the same axis as the rotating shaft 6. Circular locking holes, 9
Reference numeral b is a passage hole formed so as to project in the radial direction from both left and right sides of the locking hole 9a. The engagement hole 9a and the passage hole 9b of the bush 9 are formed so that the shaft portion 8a of the key 8 can be inserted.
a has a diameter slightly larger than that of the shaft portion 8a, and the passage hole 9
B is formed in a size slightly larger than the hooking protrusion 8c, and the whole is a flat lantern-shaped keyhole shown in FIG. Both passage holes 9b of the bush 9 are arranged at an angular position of about 90 degrees with respect to the locking projection 6a of the rotating shaft 6 in the restrained position.

Next, the operation of the conventional side wall rescue exit device for an elevator cab constructed as above will be described.

First, in an emergency, the emergency door 3 of the car room 1
When it is necessary to open the key, the shaft 8a is inserted into the locking hole 9a with the both locking projections 8c at the tip of the key 8 corresponding to the passage holes 9b of the bush 9, and the engagement groove at the tip is inserted. 8b is fitted to the locking projection 6a of the rotary shaft 6. Then, by rotating the key 8 in the clockwise direction indicated by the arrow in FIG. 12 via the handle 8d, the lock plate 7 is rotated in the clockwise direction via the rotation shaft 6, and the side wall 2 at the tip thereof. Is disengaged. It should be noted that the chain double-dashed line in FIG. 12 indicates the open position where the lock plate 7 has been rotated about 90 degrees. This allows the emergency door 3 to be opened to the inside of the cab 1. At the same time, the both locking projections 8c of the key 8 are rotated clockwise from the passage hole 9b of the bush 9 and locked to the peripheral edge of the locking hole 9a. Accordingly, by gripping the handle 8d of the key 8 and pulling it toward the front side, the hooking protrusion 8a of the key 8 engages with the bush 9, so that the emergency door 3 can be opened to the inside of the cab 1. it can.

On the other hand, in order to close the emergency door 3, the handle 8d of the key 8 inserted into the locking hole 9a of the bush 9 is grasped to move the emergency door 3 to the outside of the cab 1. Push to bring the front end of the emergency door 3 into contact with the stopper 4. Then, the key 8 is turned counterclockwise through the handle 8d to turn the lock plate 7 counterclockwise, and the tip of the lock plate 7 is locked to the tip of the stopper 4, 12 Return to the restrained position indicated by the solid line to prevent the emergency door 3 from opening. At the same time, the both locking projections 8c of the key 8 are rotated counterclockwise from the passage hole 9b of the bush 9 and returned from the peripheral edge of the locking hole 9a to the position corresponding to the passage hole 9b. . As a result, the key 8 can be pulled out from the bush 9 by pulling it toward the front side.

[0009]

Since the conventional side wall rescue device for an elevator cab has the above-described structure, the bush 9 is formed with protruding passage holes 9b on the left and right of the circular locking hole 9a. There is a need. However, since the bush 9 is formed of a substantially cylindrical thick-walled material, the locking hole 9a is formed in the thick-walled material.
In order to form the specially shaped key hole composed of the passage hole 9b and the passage hole 9b, special processing is required, and the processing requires a lot of time. As a result, the total manufacturing cost may increase.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a side wall rescue exit device for an elevator cab, in which a handle for an emergency door can be omitted, parts can be easily processed, and the manufacturing cost can be reduced.

[0011]

According to a first aspect of the present invention, there is provided a side wall rescue exit device for an elevator cab, one side of which is pivotally supported by a side wall of the cab, and an outer surface of the cab is provided with an outer surface and an inner surface thereof is provided with an inner surface. An emergency door that opens inside the car room, a rotating shaft that is provided on the other side of the emergency door at a right angle to the outer surface, a base end is attached to the rotating shaft, and the tip is engaged with the car room. Locking means that is selectively rotated between a restrained position that is stopped to restrain the opening of the emergency door and an open position that releases the engagement with the cab and allows the opening of the emergency door; The locking part provided on the shaft end of the rotating shaft facing the emergency door and the rod-shaped emergency door are formed separately from each other, and the locking part of the rotating shaft is attached to the tip of one side. In addition to having an engaging portion that rotates the rotating shaft together, a hooking protrusion that protrudes in a direction perpendicular to the longitudinal direction to the other side by a predetermined distance from the tip end -, A bushing that is fixed to the emergency door facing the locking part of the rotating shaft so as to be spaced apart from it, and that has a circular hole that is concentric with the rotating shaft and that has a larger diameter than the locking protrusion of the key. The lock projection is provided with a key hole having substantially the same cross-sectional shape as that of the locking projection, and is disposed between the rotating shaft and the bush. And a thin plate having a keyhole arranged at an angular position that allows passage of the hooking protrusion of the key only when engaged.

According to a second aspect of the present invention, there is provided a side wall rescue exit device for an elevator cab, one side of which is axially supported by a side wall of the cab.
An emergency door that is open to the inside of the cab with the outer surface inside and the inner surface located outside the cab, and the rotating shaft that is provided on the other side of the emergency door at a right angle to the outer surface, and the base end There are a restraining position, which is attached to the rotating shaft and whose front end is locked in the cab to restrain the opening of the emergency door, and an open position where the engagement with the cab is released to allow the opening of the emergency door. Locking means that is selectively rotated between the two, locking means provided on the inner end side of the rotation shaft,
It has a rod-like shape and is formed separately from the emergency door, and has an engaging portion for engaging the locking portion of the rotating shaft to rotate the rotating shaft at one end of the door. Engages with the stop means in the circumferential direction,
Also, a key having engaging means for engaging the locking means of the rotating shaft in the open position in the longitudinal direction, and a key fixed to the emergency door so as to face the locking portion of the rotating shaft in a spaced relationship. And a bush in which a round hole having a diameter larger than that of the locking projection of the key is formed concentrically.

According to a third aspect of the present invention, there is provided a side wall rescue exit device for an elevator cab, one side of which is axially supported by a side wall of the cab.
An emergency door that is open to the inside of the cab with the outer surface inside and the inner surface located outside the cab, and the rotating shaft that is provided on the other side of the emergency door at a right angle to the outer surface, and the base end There are a restraining position, which is attached to the rotating shaft and whose front end is locked in the cab to restrain the opening of the emergency door, and an open position where the engagement with the cab is released to allow the opening of the emergency door. A locking means that is selectively rotated between them, a locking pin that is fixed to the rotating shaft that faces the emergency door so as to extend in the radial direction, and is formed separately from the rod-shaped emergency door, A key having a fitting groove extending in the length direction so that the locking pin can be fitted therein, and a hooking groove extending in the circumferential direction continuous to the fitting groove at the tip, and a locking portion of the rotating shaft on the emergency door. The bushing is provided so as to be separated and opposed to each other, and is concentric with the rotating shaft and has a round hole having a diameter larger than that of the shaft portion of the key.

[0014]

According to the first aspect of the present invention, when the tip of the key is inserted into the round hole of the bush and the key hole of the thin plate which are coaxial with the turning shaft, the engaging portion at the tip of the key is in the restraining position. Since it engages with the locking portion at the inner end in the circumferential direction, the locking means can be changed to the open position via the rotation shaft by rotating the key. At this time, the key locking projection rotates the keyhole to reach a position where it cannot pass through the keyhole. Therefore, by grasping the key and pulling it toward the front side, the key locking projection is attached to the periphery of the keyhole. And the emergency door can be opened to the inside of the cab. On the other hand, when the key is rotated to return the locking means to the restrained position, the key locking projection can pass through the key hole, so that the key can be removed from the bush.

According to another aspect of the present invention, when the tip of the key is inserted into the round hole of the bush located coaxially with the rotation shaft, the engaging means at the tip of the key engages with the inner end of the rotation shaft in the restrained position. When the locking means is fitted and the key is turned, the engaging means engages with the locking means of the turning shaft in the circumferential direction, so that the locking means can be turned to the open position via the turning shaft. it can. At this time, the engaging means of the key engages with the locking means of the rotating shaft not only in the circumferential direction but also in the length direction. Therefore, by grasping the key and pulling it toward the front side, the emergency door can be opened. It can be opened to the inside of the cab. On the other hand, when the key is rotated to return the lock means to the restrained position, the key engagement means can be disengaged from the rotation shaft locking means, so that the key can be removed from the bush.

According to the present invention, when the tip of the key is inserted into the round hole of the bush located coaxially with the rotary shaft, the fitting groove at the tip of the key is fitted to the locking pin of the rotary shaft in the restrained position. When the key is rotated and the key is rotated, the end of the retaining groove continuous with the fitting groove engages with the locking pin of the rotation shaft in the circumferential direction, so the locking means is rotated to the open position via the rotation shaft. can do. At this time, the locking groove of the key engages with the locking pin of the rotating shaft not only in the circumferential direction but also in the length direction. Therefore, by grasping the key and pulling it toward the front side, the emergency door can be closed. Can be opened to the inside. On the other hand, when the key is turned to return the locking means to the restraining position, the locking pin of the turning shaft relatively moves in the locking groove of the key and returns to the position corresponding to the fitting groove, so that the key is removed from the bush. Can be removed.

[0017]

Embodiments of the present invention will be described below.

FIG. 1 is a sectional view of a side wall rescue exit device for an elevator cab according to a first embodiment of the present invention. FIG. 2 is a plan view of a bush of the side wall rescue exit device of the elevator cab of the first embodiment. FIG. 3 is a plan view of a thin plate of the side wall rescue exit device of the elevator cab of the first embodiment. FIG. 4 is a cross-sectional view showing a usage state of the side wall rescue exit device of the elevator cab according to the first embodiment.

In the figure, the same reference numerals and symbols as those of the conventional example indicate the same or corresponding parts as those of the conventional example, and therefore, a duplicate description will be omitted here.

In the figure, reference numeral 21 denotes a bush which is inserted and fixed inside the emergency door 3 so as to face the inner end of the rotating shaft 6.
Reference numeral 21a is a round hole formed in the bush 21 so as to extend on the same axis as the rotary shaft 6 and to have a larger diameter than the hooking projection 8c of the key 8. Reference numeral 22 denotes a thin plate which is disposed on the bottom surface of the large-diameter recess of the bearing member 5 and is located between the rotating shaft 6 and the bush 21, and 22a extends on the same axis as the rotating shaft 6. As described above, circular locking holes 22b are formed in the thin plate 22, and 22b are passing holes that are formed so as to project from the left and right sides of the locking hole 22a in the radial direction. 23 is a thin plate 22
Is a screw that is screwed and fixed to the bearing member 5. The thin plate 22
The locking hole 22a and the passage hole 22b of the
The engaging hole 22a has a diameter slightly larger than that of the shaft portion 8a and the passage hole 22b is formed to have a size slightly larger than the hooking protrusion 8c so as to allow the insertion of the flat lantern shape shown in FIG. It is said to be the keyhole. Both the through holes 2 of the thin plate 22
2b is arranged in a substantially horizontal state, that is, at an angular position of about 90 degrees with respect to the locking projection 6a of the rotating shaft 6 in the restrained position shown in FIGS. In addition, the inner end of the rotating shaft 6 and the thin plate 22
The distance between them is substantially the same as the distance between the tip of the key 8 and the locking projection 8c, and when the engaging groove 8b of the key 8 is engaged with the locking projection 6a of the rotating shaft 6, The stop projection 8c is located at a position where it can be locked with the surface of the thin plate on the side of the rotary shaft 6.

Next, the operation of the side wall rescue exit device for the elevator cab of the first embodiment constructed as described above will be explained.

First, in an emergency, the emergency door 3 of the car room 1
When it is necessary to open the key, the handle 8d is gripped, the tip of the key 8 is inserted into the round hole 21a of the bush 21, and the both hooking protrusions 8c at the tip of the key 8 are set horizontally.
Both hook projections 8c are made to correspond to the passage holes 22b of the thin plate 22,
The shaft portion 8a is inserted into the locking hole 22a, and the engaging groove 8b at the tip is inserted.
Is fitted to the locking projection 6a of the rotary shaft 6. Then, by rotating the key 8 in the clockwise direction indicated by the arrow in FIG. 4 via the handle 8d, the lock plate 7 is rotated in the clockwise direction via the rotating shaft 6, and the side wall 2 at the tip thereof. Is disengaged. In addition, the two-dot chain line in FIG.
Shows the open position rotated by a degree. This allows the emergency door 3 to be opened to the inside of the cab 1. At the same time,
Both locking protrusions 8c of the key 8 are rotated clockwise from the passage hole 22b of the thin plate 22 and are locked to the peripheral edge of the locking hole 22a. Accordingly, by gripping the handle 8d of the key 8 and pulling it toward the front side, the hooking protrusion 8c of the key 8 engages with the thin plate 22, so that the emergency door 3 can be opened to the inside of the cab 1. it can.

On the other hand, in order to close the emergency door 3, the handle 8d of the key 8 inserted into the round hole 21a of the bush 21 and the locking hole 22a of the thin plate 22 is gripped, and the emergency door 3 is closed. Is pushed to the outside of the cab 1 to bring the front end of the emergency door 3 into contact with the stopper 4. Then, the key 8 is turned counterclockwise through the handle 8d to turn the lock plate 7 counterclockwise, and the tip of the lock plate 7 is locked to the tip of the stopper 4, 4 Return to the restrained position indicated by the solid line to prevent the emergency door 3 from opening. At the same time, the both locking projections 8c of the key 8 are rotated counterclockwise from the passage hole 22b of the thin plate 22 and returned from the peripheral edge of the locking hole 22a to the position corresponding to the passage hole 22b. . Accordingly, the key 8 can be pulled out from the thin plate 22 and the bush 21 by pulling the key 8 toward the front side.

As described above, the side wall rescue exit device for the elevator cab according to the first embodiment is provided with a pair of hooking projections 8c projecting laterally to the base end side for a predetermined distance from the tip of the key 8 for emergency use. A bush 21 is inserted into the inner side of the door 3 so as to face the locking projection 6a of the rotating shaft 6 so as to be spaced apart from the locking projection 6a.
a is formed on the same axis as the rotating shaft 6, the thin plate 22 is arranged on the bottom of the large-diameter recess of the stepped cylindrical bearing member 5 supporting the rotating shaft 6, and fixed by the screw 23. Is located between the rotary shaft 6 and the bush 21, and the thin plate 22 has a shaft portion 8 of the key 8 so as to extend on the same axis as the rotary shaft 6.
A circular locking hole 22a having a diameter slightly larger than a is drilled, and a pair of through holes 22b having a size larger than the locking projection 8c of the key 8 is formed in a radial direction from both left and right sides of the locking hole 22a. As a whole, a flat lantern-shaped key hole is formed, and both the through holes 22b of the thin plate 22 are set substantially horizontal, so that the locking projection 6a of the rotating shaft 6 in the restrained position is at about 90 degrees. The engaging groove 8b of the key 8 is rotated by arranging it at an angular position and making the distance between the inner end of the rotating shaft 6 and the thin plate 22 substantially the same as the distance between the tip of the key 8 and the locking projection 8c. Locking projection 6 of shaft 6
When engaged with a, the hooking protrusion 8c is located at a position where it can be locked with the surface of the thin plate on the rotating shaft 6 side.

Therefore, in the first embodiment, the rotating shaft 6
When the shaft portion 8a and the hooking protrusion 8c at the tip of the key 8 are inserted into the round hole 21a of the bush 21 and the lock hole 22a and the passage hole 22b, which are the key holes of the thin plate 22, which are located on the same axis as
The engaging groove 8b at the tip of the key 8 has the rotating shaft 6 at the restrained position.
Since it becomes possible to engage with the locking projection 6a at the inner end of the key and engage in the circumferential direction, the lock plate 7 is rotated to the open position via the rotation shaft 6 by rotating the key 8. can do. At this time, the both locking projections 8c of the key 8 rotate from the passage hole 22b of the thin plate 22 to the peripheral portion of the locking hole 22a and cannot pass through the key hole. By pulling the key 8 to the locking projection 8c of the key 8,
By engaging with the peripheral portion of 2a, the emergency door 3 can be opened to the inside of the cab 1. On the other hand, when the key 8 is rotated to return the lock plate 7 to the restrained position, both locking protrusions 8c of the key 8 are returned.
The key 8 can be pulled out from the thin plate 22 and the bush 21 because the key 8 is returned from the peripheral portion of the locking hole 22a of the thin plate 22 to the passage hole 22b. As a result, the key 8 can be used to lock and unlock the emergency door 3 and to open and close the emergency door 3, thereby omitting a handle for opening and closing the emergency door 3.
The bush 21 has a round hole 21 that can be easily machined by drilling or the like.
Since the workability is improved by drilling a, and the lantern-shaped keyhole of the thin plate 22 can be easily formed by punching or the like, their manufacturing work is facilitated and workability is improved. It is possible to improve the manufacturing cost and reduce the manufacturing cost. Also,
A round hole 2 is formed in the bush 21 that constitutes the exterior design of the car room 1.
Since 1a is formed, the appearance can be improved and the design effect can be improved.

Next, a second embodiment according to the present invention will be described below. In the second embodiment, only differences from the first embodiment will be described, and the same components as those in the first embodiment will be denoted by the same reference numerals in the drawings, and description thereof will be omitted.

FIG. 5 is a sectional view of a side wall rescue exit device for an elevator cab according to a second embodiment of the present invention. FIG. 6 is a plan view of a bush of the side wall rescue exit device of the elevator cab according to the second embodiment. FIG. 7 is a perspective view of the engaging means at the tip of the key of the side wall rescue exit device of the elevator cab according to the second embodiment.
FIG. 8 is a sectional view showing a usage state of the side wall rescue exit device for the elevator cab according to the second embodiment.

In FIG. 1, reference numeral 31 denotes a stepped rotary shaft extending in the left-right direction of the cab 1, the large-diameter inner end portion of which is rotatably inserted into a small-diameter recess of the bearing member 5. In addition, the outer end portion of the small diameter is penetrated and projected outward from the bearing member 5. Reference numeral 31a is a recess having a predetermined diameter formed on the inner end of the rotary shaft 31, and 31b is a locking pin as locking means fixed in the recess 31a in the radial direction. Reference numeral 32 denotes a key, 32a has a diameter substantially the same as the diameter of the recess 31a of the rotary shaft 31, and is a cylindrical shaft portion that can be fitted into the recess 31a.
Reference numeral 32b is a fitting groove formed as an engaging means at a predetermined depth over the entire radial direction at the tip of the shaft portion 32a so that the locking pin 31b of the rotating shaft 31 can be fitted therein, and 32c is a tip of the shaft portion 32a. A predetermined distance from the base end side, the fitting groove 3
A pair of locking grooves as engaging means extending at predetermined angles on both sides in the circumferential direction of the shaft portion 32a so as to be continuous with the end of 2b.
Reference numeral 2d denotes a pair of handles that protrudes radially from the peripheral surface of the base end portion of the shaft portion 32a. It should be noted that the depth of the fitting groove 32b is from the bottom surface of the recess 31a of the rotating shaft 31 to the engaging pin 3.
It is set smaller than the distance to 1b. Reference numeral 33 denotes a bush inserted and fixed inside the emergency door 3 so as to face the inner end of the rotating shaft 31, and 33a extends so as to extend on the same axis as the rotating shaft 31, and the shaft of the key 32. It is a round hole formed in the bush 33 so as to have a larger diameter than the portion 32a.

Next, the operation of the side wall rescue exit device for the elevator cab of the second embodiment constructed as described above will be explained.

First, in an emergency, the emergency door 3 of the car room 1
When it is necessary to open the lever, the handle 32d is gripped to insert the tip of the key 32 into the round hole 33a of the bush 33, and the fitting groove 32b at the tip of the key 32 is inserted into the locking pin 31b of the rotating shaft 31. Are fitted to each other, and the ends thereof are brought into contact with the locking pins 31b. At this time, the insertion of the shaft portion 32a of the key 32 is guided by the inner surface of the recess 31a of the rotating shaft 31. Then, by rotating the key 32 in the clockwise direction indicated by the arrow in FIG. 8 via the handle 32d, the locking pin 31b of the rotating shaft 31 moves in the circumferential direction along the retaining groove 32c continuous with the fitting groove 32b. Moves relative to and contacts the end.
Therefore, by further rotating the key 32, the rotation shaft 6
The lock plate 7 rotates in the clockwise direction via, and the engagement with the side wall 2 at its tip is released. The two-dot chain line in FIG. 8 indicates the open position where the lock plate 7 is rotated by about 90 degrees. This allows the emergency door 3 to be opened to the inside of the cab 1. At the same time, the locking pin 31b of the rotating shaft 31
Is held in both locking grooves 32c of the key 32, and the shaft portion 3
It is locked not only in the circumferential direction of 2a but also in the length direction. As a result, by gripping the handle 32d of the key 32 and pulling it toward the front side, the inner surface of the hooking groove 32c of the key 32 engages with the locking pin 31b of the rotating shaft 31, so that the emergency door 3 can be held in the car. It can be opened to the inside of the chamber 1.

On the other hand, in order to close the emergency door 3, the handle 3 of the key 32 inserted into the round hole 33a of the bush 33 is inserted.
2d is gripped and the emergency door 3 is pushed to the outside of the cab 1 to bring the front end of the emergency door 3 into contact with the stopper 4. Then, the key 32 is rotated counterclockwise through the handle 32d. Then, the locking pin 31b of the rotating shaft 31 relatively moves in the circumferential direction in the hooking groove 32c from the end of the hooking groove 32c of the key 32, and abuts on the end of the hooking groove 32c in the opposite position. . Therefore, when the key 32 is further rotated in the counterclockwise direction, the lock plate 7 is rotated in the counterclockwise direction, the tip of the lock plate 7 is locked to the tip of the stopper 4, and the solid line in FIG. The emergency door 3 is returned to the restraint position shown by
Prevent the release of. Then, the key 32 is slightly rotated clockwise again so that the fitting groove 32b corresponds to the locking pin 31b of the rotating shaft 31 and the key 32 is pulled toward the front side, so that the key 32 is removed from the bush 33. Can be removed.

As described above, in the side wall rescue exit device for the elevator cab of the second embodiment, the large diameter inner end of the stepped rotation shaft 31 is rotated into the small diameter recess of the bearing member 5. The recessed portion 3 formed on the inner end portion of the rotating shaft 31 so that the outer end portion having a small diameter penetrates and projects outward from the bearing member 5 while being inserted as much as possible.
The locking pin 31b is fixed in the radial direction in 1a, and the key 32
A fitting groove 32b is formed at a predetermined depth over the entire radial direction so that the locking pin 31b of the rotating shaft 31 can be fitted into the tip of the cylindrical shaft portion 32a of the above, and is continuous with the end of the fitting groove 32b. The pair of hooking grooves 32c are provided on both sides of the shaft portion 32a in the circumferential direction by a predetermined angle, and the pair of handles 32d are projected in the radial direction from the peripheral surface of the base end portion of the shaft portion 32a. The bush 33 is provided on the inner side so as to face the rotating shaft 31 at a distance from it.
And a circular hole 33a having a diameter larger than that of the shaft portion 32a of the key 32 is formed in the bush 33 on the same axis as the rotary shaft 31.

Therefore, in the second embodiment, the rotary shaft 3 is used.
When the tip of the shaft portion 32a of the key 32 is inserted into the round hole 33a of the bush 33 located on the same axial center as 1, the fitting groove 32b at the tip of the shaft portion 32a causes the inner end of the rotating shaft 31 in the restrained position. The lock pin 31b in the recess 31a of the
When 2 is rotated, the end of the retaining groove 32c continuous with the fitting groove 32b engages with the locking pin 31b of the rotating shaft 31 in the circumferential direction, so that the lock plate 7 is moved to the open position via the rotating shaft 31. It can be rotated. At this time, the hook groove 32 of the key 32
Since c engages with the locking pin 31b of the rotating shaft 31 not only in the circumferential direction of the shaft portion 32a but also in the length direction, the key 32 is grasped and pulled toward the front side, so that the emergency door 3 Can be opened to the inside of the cab 1. On the other hand, after rotating the key 32 to return the lock plate 7 to the restraint position, the key 32
When is rotated slightly clockwise, the locking pin 31b of the rotation shaft 31 relatively moves in the locking groove 32c of the key 32 and returns to the position corresponding to the fitting groove 32b, so that the key 32 is removed from the bush 33. Can be removed. As a result, similar to the first embodiment, the key 32 is used to lock and unlock the emergency door 3 and to open and close it, so that the handle for opening and closing the emergency door 3 can be omitted, while the bush 33 is drilled. As a result, a round hole 33a that can be easily machined is formed to improve the workability and reduce the manufacturing cost. Further, the thin plate 22 of the first embodiment can be omitted, the number of parts as a whole can be reduced, and the assembling workability can be improved. In addition, since the round hole 33a of the bush 33 can be made smaller than that of the first embodiment, the appearance in the vicinity of the bush 33 that constitutes the appearance design in the car room 1 can be improved and the design effect can be further improved. it can.

By the way, the keyhole of the thin plate 22 of the first embodiment has a lantern shape which is the same as the cross-sectional shape of the latching projection 8c of the key 8 due to the locking hole 22a and the passage hole 22b. When carrying out the present invention, the present invention is not limited to this, and when the engaging groove 8b of the key 8 is fitted into the locking projection 6a of the rotating shaft 6 in the restrained position, the key 8 It suffices that the locking projection 8c is allowed to pass and that the locking projection 8c is locked when the key 8 is rotated from that state. For example, the passing hole 22b may be extended in the circumferential direction of the locking hole 22a by a predetermined angle to facilitate the passage of the hooking protrusion 8c of the key 8 and other shapes may be adopted.

The locking means of the rotary shaft 31 and the engaging means of the key 32 of the second embodiment are the recesses 31 of the rotary shaft 31.
Although the engaging groove 32b and the hooking groove 32c of the key 32 are configured to be engaged with the locking pin 31b in the "a", the configuration may be reversed. That is, a recess and a locking pin similar to the recess 31a and the locking pin 31b are provided at the tip of the shaft 32a of the key 32, and the inner end of the rotating shaft 31 is fitted into the recess of the shaft 32a of the key 32. In addition to having a cylindrical shape with a possible diameter, a fitting groove and a locking groove similar to the fitting groove 32b and the locking groove 32c are formed in the cylindrical inner end portion of the rotating shaft 31, and the same as the second embodiment. And they can also be engaged. Alternatively, both ends of the substantially U-shaped rod-shaped locking pin are embedded in the inner end surface of the rotary shaft 31 without forming the recess 31a in the rotary shaft 31, and the central portion thereof is the rotary shaft 31.
Away from the inner end surface of the, in the same manner as the second embodiment,
It is also possible to engage with the fitting groove 32b and the hooking groove 32c of the key 32. That is, the engaging means at the tip of the key 32 can be engaged with and disengaged from the engaging means of the rotating shaft 31 in the restrained position, and the rotating shaft is rotated when the key 32 is rotated in the circumferential direction. As long as it engages with the locking means of 31 in the circumferential direction and engages with the locking means of the rotating shaft 31 in the open position in the length direction, its configuration can be appropriately changed. .

[0036]

As described above, in the side wall rescue exit device for an elevator cab according to claim 1, the engaging portion at the tip of the key is engaged with the engaging portion of the rotating shaft to rotate the locking means. In the case of locking and unlocking the opening of the emergency door by the locking means, a hooking protrusion protruding from the tip of the key is provided,
A bush is fixed to the inside of the emergency door so as to be spaced apart from and opposed to the locking portion of the rotating shaft, and a circular hole having a diameter larger than that of the latching protrusion portion of the key is formed in the bush as the rotating shaft. A key hole formed concentrically and having a shape substantially the same as the cross-sectional shape of the locking projection of the key is provided between the rotation shaft and the bush, and the rotation at the restraining position is performed. Only when the engaging portion of the key is engaged with the locking portion of the shaft, the keyhole is arranged at an angular position that allows passage of the hooking protrusion of the key. Therefore, when the tip of the key is inserted through the round hole and the key hole of the bush located concentrically with the rotation shaft, the engaging portion at the tip of the key engages with the locking portion at the inner end of the rotation shaft in the restrained position. Since it becomes possible to engage in the circumferential direction,
By rotating the key, the locking means can be rotated to the open position via the rotation shaft. At this time, the key locking protrusion rotates the key hole of the thin plate to a position where it cannot pass through the key hole. Therefore, by grasping the key and pulling it toward you, the key locking protrusion is released. Engage with the periphery of the keyhole,
The emergency door can be opened inside the cab. Further, when the key is rotated to return the locking means to the restrained position, the key locking projection can pass through the key hole, so that the key can be removed from the bush. As a result, the emergency door can be locked, unlocked, and opened / closed by the key, and the handle for opening / closing the emergency door can be omitted, while the bush is provided with a round hole that can be easily processed by drilling or the like. The workability is improved and the keyhole can be easily formed by punching or the like.
These manufacturing operations can be facilitated, workability can be improved, and manufacturing costs can be reduced. Furthermore, since the round hole is formed in the bush that constitutes the exterior design of the car interior, the appearance can be improved and the design effect can be improved.

According to another aspect of the present invention, there is provided a side wall rescue exit device for an elevator cab, wherein the locking means is rotated by engaging the engagement portion at the tip of the key with the engagement portion of the rotating shaft, and the emergency door is provided by the locking means. In the case of locking and unlocking the opening of the rotary shaft, a locking means is provided on the rotary shaft, and the tip end of the key can be fitted and disengaged with the locking means of the rotary shaft in the restrained position. At the same time, when the key is rotated in the circumferential direction, it engages with the locking means of the rotary shaft in the circumferential direction, and engages with the locking means of the rotary shaft in the open position in the longitudinal direction. A bushing is inserted into the emergency door so as to be spaced apart from and facing the rotation shaft inside the emergency door, and a round hole having a larger diameter than the key is concentric with the rotation shaft in the bush. It is formed above. Therefore, when the tip of the key is inserted through the round hole of the bush located concentrically with the rotation shaft, the engaging means at the tip of the key fits with the locking means at the inner end of the rotation shaft in the restrained position. When the key is turned, the engaging means engages with the locking means of the turning shaft in the circumferential direction, so that the locking means can be turned to the open position via the turning shaft. At this time, the engaging means of the key engages with the locking means of the rotating shaft not only in the circumferential direction but also in the length direction. Therefore, by grasping the key and pulling it toward the front side, the emergency door can be opened. It can be opened to the inside of the cab. On the other hand, when the key is rotated to return the lock means to the restrained position, the key engagement means can be disengaged from the rotation shaft locking means, so that the key can be removed from the bush. As a result, the key can be used to lock / unlock and open / close the emergency door, and the handle for opening / closing the emergency door can be omitted, while the bush is provided with a round hole that can be easily processed by drilling or the like. The workability can be improved and the manufacturing cost can be reduced. Further, since the round hole is formed in the bush forming the external appearance design in the car room, the appearance can be improved and the design effect can be improved.

According to another aspect of the present invention, there is provided a side wall rescue exit device for an elevator cab, wherein the locking means is rotated by engaging the engaging portion at the tip of the key with the engaging portion of the rotating shaft, and the emergency door is provided by the locking means. For locking and unlocking the opening of the key, a locking pin is fixed to the rotating shaft so as to extend in a radial direction at a predetermined distance, and the key can be fitted in the locking rod in the longitudinal direction of the tip of the key. Along with forming a groove, a hooking groove extending continuously in the circumferential direction to the fitting groove is formed, and a bush is fixed on the inner side of the emergency door so as to be spaced apart from and opposed to the rotating shaft.
A round hole having a diameter larger than that of the key is formed in the bush concentrically with the rotating shaft. Therefore, if you insert the tip of the key into the round hole of the bush that is concentric with the rotation axis,
The fitting groove at the tip of the key fits into the locking pin of the rotating shaft in the restrained position, and when the key is rotated, the locking groove continuous with the fitting groove engages with the locking pin of the rotating shaft in the circumferential direction. For this purpose, the locking means can be turned to the open position via the turning shaft. At this time, the locking groove of the key engages with the locking pin of the rotating shaft not only in the circumferential direction but also in the length direction. It can be opened to the inside of the chamber. On the other hand, when the key is turned to return the locking means to the restraining position, the locking pin of the turning shaft relatively moves in the locking groove of the key and returns to the position corresponding to the fitting groove, so that the key is removed from the bush. Can be removed. As a result, the key can be used to lock / unlock and open / close the emergency door, and the handle for opening / closing the emergency door can be omitted, while the bush is provided with a round hole that can be easily processed by drilling or the like. The workability can be improved and the manufacturing cost can be reduced. Further, since the round hole is formed in the bush forming the external appearance design in the car room, the appearance can be improved and the design effect can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a side wall rescue exit device for an elevator cab according to a first embodiment of the present invention.

FIG. 2 is a plan view of a bush of the side wall rescue exit device of the elevator cab according to the first embodiment of the present invention.

FIG. 3 is a plan view of a thin plate of the side wall rescue exit device of the elevator cab according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a usage state of the side wall rescue exit device of the elevator cab according to the first embodiment of the present invention.

FIG. 5 is a sectional view of a side wall rescue exit device for an elevator cab according to a second embodiment of the present invention.

FIG. 6 is a plan view of a bush of a side wall rescue exit device for an elevator cab according to a second embodiment of the present invention.

FIG. 7 is a perspective view of the engaging means at the tip of the key of the side wall rescue exit device for the elevator cab according to the second embodiment of the present invention.

FIG. 8 is a cross-sectional view showing a usage state of a side wall rescue exit device for an elevator cab according to a second embodiment of the present invention.

FIG. 9 is a side view showing a state where the side wall rescue exit device of the elevator cab is viewed from the inside of the cab.

FIG. 10 is a cross-sectional view showing a conventional side wall rescue exit device for an elevator cab.

FIG. 11 is a plan view showing a bush of a conventional side wall rescue exit device for an elevator cab.

FIG. 12 is a cross-sectional view showing a usage state of a conventional side wall rescue exit device for an elevator cab.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Car room 3 Emergency door 6 Rotating shaft 6a Locking protrusion (locking part) 7 Lock plate (locking means) 8 Key 8b Engaging groove (engaging part) 8c Locking protrusion 21 Bush 21a Round hole 22 Thin plate 22a Locking hole (key hole) 22b Passage hole (key hole) 31 Rotating shaft, 31b Locking pin (locking means) 32 Key 32b Fitting groove (engaging means) 32c Locking groove (engaging means) 33 Bushing 33a round hole

Claims (3)

(57) [Claims] 1. A car room, one side of which is axially supported by a side wall of the car room.
Inside the cab with the outer surface on the outside and the inner surface on the inside
And emergency door is opened on a side, the said other side outer surface and rotating shaft provided at a right angle of the emergency door, the proximal end is attached to the pivot shaft, engaging the tip the cab a restraining position for restraining the opening of the emergency door is locked, before
The engagement with the car room is released and the emergency door can be opened.
A locking means that is selectively rotated between an open position and a pivot end of the rotating shaft that faces the emergency door.
The locking part and the rod-shaped emergency door are formed separately from each other, and
The rotation shaft is rotated by engaging the locking portion of the rotation shaft at the end.
It has an engaging part that allows it to move a certain distance from the tip.
A key having a hooking protrusion that protrudes to the side in a direction perpendicular to the longitudinal direction, and is fixed to the emergency door so as to be spaced apart from and opposed to the locking portion of the rotating shaft.
The key locking protrusion is concentric with the rotation shaft.
And a bush having a larger diameter round hole, and a key hole having substantially the same shape as the cross-sectional shape of the locking projection portion of the key, the bush being disposed between the rotating shaft and the bush. A thin plate in which the keyhole is arranged at an angular position that allows passage of the locking projection of the key only when the key engaging portion is engaged with the locking portion of the rotating shaft in the restrained position. A side wall rescue device for an elevator cab, which is characterized by being provided. 2. A car room, one side of which is pivotally supported on a side wall of the car room.
Inside the cab with the outer surface on the outside and the inner surface on the inside
And emergency door is opened on a side, the said other side outer surface and rotating shaft provided at a right angle of the emergency door, the proximal end is attached to the pivot shaft, engaging the tip the cab a restraining position for restraining the opening of the emergency door is locked, before
The engagement with the car room is released and the emergency door can be opened.
The locking means that is selectively rotated between the opened and closed positions, the locking means that is provided on the inner end side of the rotating shaft, and the rod-shaped emergency door that are formed separately from each other. , One side ahead
The rotation shaft is rotated by engaging the locking portion of the rotation shaft at the end.
And an engaging portion that allows the locking shaft to engage the rotating shaft.
The rotary shaft that is engaged with the step in the circumferential direction and is in the open position.
A key having engaging means that engages with the locking means in the longitudinal direction, and is fixed to the emergency door so as to face the locking portion of the rotating shaft in a spaced relationship.
The key locking protrusion is concentric with the rotation shaft.
And a bush in which a round hole having a larger diameter is formed, a side wall rescue device for an elevator cab. 3. A cab room, one side of which is pivotally supported on a side wall of the cab room.
Inside the cab with the outer surface on the outside and the inner surface on the inside
And emergency door is opened on a side, the said other side outer surface and rotating shaft provided at a right angle of the emergency door, the proximal end is attached to the pivot shaft, engaging the tip the cab a restraining position for restraining the opening of the emergency door is locked, before
The engagement with the car room is released and the emergency door can be opened.
Locking means that is selectively rotated between the emergency opening position, a locking pin fixed to the rotation shaft facing the emergency door so as to extend in a radial direction, and a rod-shaped emergency It is formed separately from the door and locks it
A fitting groove extending in the length direction so that the pin can be fitted, and the fitting
A key having a hooking groove continuous in the circumferential direction and extending in the circumferential direction at the tip , and fixed to the emergency door so as to be spaced apart from and opposed to the locking portion of the rotating shaft.
And has a diameter larger than that of the shaft of the key concentrically with the rotary shaft.
A side wall rescue device for an elevator cab, comprising a bush having a round hole formed therein .