JP2003292273A - Elevator cage door apparatus with locking apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator cage door apparatus with a locking apparatus suppressing power consumption and attain smooth closing of doors and easy adjustment. <P>SOLUTION: Doors 10, 20 of an elevator cage are provided with a lock pin 52 pulled up by an electromagnetic driving device 55 and energized downward by a spring 53, and a movable member 57 moving in a door closing direction by door closing operation and moving into a position of obstructing the descent of the lock pin, by door opening operation. There is therefore no need to continue to apply a current to the driving device when opening the doors, while locking at appropriate timing without performing signal processing and control when closing the doors. Consequently, power consumption can be suppressed while attaining smooth closing of the doors and easy adjustment. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator cab door device having a lock device, and more particularly to a device suitable for locking the cab door when the elevator is not located near a landing.

[0002]

2. Description of the Related Art When an abnormality such as a power failure occurs while an elevator is running, the car may stop at a place other than the landing. In such a case, passengers in the car feel uneasy and It is possible that you are trying to open the door. When the cab door is opened from inside, passengers may fall into the hoistway. In particular, if an elevator for outdoor observation or the like makes an emergency stop at a portion where the hoistway wall is not provided, and the cab door is opened from the inside, there is a risk that it may become a more dangerous situation.

Also, in an elevator having a normal hoistway, the gap between the hoistway wall and the car room is narrowed in consideration of the possibility that the door may open when the car is emergency stopped at a place other than the platform. It was necessary to provide a fetcher plate for this. However, in a high-floor elevator, since the number of such fesscher plates is large, the cost is increased, and improvement is required.

In order to prevent the cab door from being opened from the inside, it is effective to install a lock device for mechanically locking the cab door. Various devices have already been proposed as a device for locking the cab door.
The first structure is to install a device for moving the plunger of the electromagnetic magnet up and down on the center side of the entrance and exit of the hanging fittings of the left and right car room doors, and to disengage the electromagnetic magnet to provide it at the tip of this plunger. The lock metal fittings are lowered to lock the left and right car doors, and the lock is released by exciting them.

Alternatively, as a second structure, an elevator is provided in the car door frame that constitutes the doorway,
When the operating piece is supported from the door frame so that it can move in and out in the direction of the car room door, the drive device that moves the operating piece in and out, and when this operating piece is attached to the door and the car door is open, the operating piece moves out. There is a locking device including an operating piece support having a hole through which the operating piece passes.

[0006]

The first structure described above is
When the door was opened after the electromagnetic actuator was energized and the lock was released, it was necessary to constantly energize the electromagnetic actuator. As a result, not only was power consumption increased, but there was concern about heat generation. In addition, even if the door is opened during adjustment or maintenance, the lock state occurs unless power is supplied, so that there is a problem that adjustment takes time and effort. Also, to perform the lock operation,
When the door is closed, it is necessary to confirm the output of the switch for detecting the door closed state and then cut off the current of the electromagnetic actuator. Therefore, it takes time to transmit and output the output of the switch, and there is a concern that it takes time from the door closing operation to the start of operation of the elevator. If the switch signal is adjusted to be output earlier in order to shorten this time, it may be locked when there is a possibility of reopening, and smooth reopening may not be possible.

On the other hand, since the lock device of the second structure is a type in which the actuating piece is lowered by energization, it may remain de-energized when the door is open, but to lock it, a switch for detecting the door closed state, etc. Since the electromagnetic actuator is energized after checking the output of the above, there is a problem that it takes time and adjustment is difficult as in the above case. Also,
If the elevator stopped in an emergency and the power was cut off, the lock would be released, and there was a concern that passengers would open the door from inside.

The present invention has been made in consideration of such a point. It is not necessary to always energize the door even when the door is open, the power consumption is kept low, the adjustment and maintenance can be easily performed, and the door closing operation is performed. It is an object of the present invention to provide a cab door device for an elevator having a lock device, which can prevent wasteful time from starting to start the elevator, and can perform a smooth reopening operation.

[0009]

According to the present invention, there is provided an elevator cab door, which is provided at an entrance of an elevator cab and is opened and closed along a rail provided on a frame above the entrance, and attached to the frame. An electromagnetic drive device, a lock pin that is pulled up when the electromagnetic drive device is energized, and is urged downward by a spring when the electromagnetic drive device is not energized, and an opening provided integrally with the upper part of the cab door to insert the lock pin. And a fixing member having a portion, which is biased by a spring in the door opening direction of the car room door, and contacts the fixing member or the upper part of the car room door near the door closed position of the car room door, Is further driven in the door closing direction to move to a position that does not prevent the lock pin from moving up and down, and the cab door is driven in the door opening direction from the door closed state. More, a movable member to which the lock pin is pulled up is moved to a position that prevents descending,
An elevator cab door device having a lock device characterized by including:

According to the present invention, after the cab door is opened, the movable member moves to a position that prevents the lock pin from descending. Therefore, the lock pin can be kept in a pulled-up state in the non-energized state, and when the door is opened. It is not necessary to keep the electromagnetic drive energized. Therefore, power consumption can be suppressed, and adjustment and maintenance can be easily performed in a non-energized state.

When the cab door is closed, the movable member is pushed and moved immediately before the door is closed to lower the lock pin to automatically lock the door. Therefore, a signal from the switch is transmitted to the electromagnetic actuator. The control time can be omitted, and the lock can be performed at an appropriate timing immediately before the door is completely closed.

Further, in the elevator cab door device having the lock device of the present invention, the lock pin is provided with a projecting member projecting to the outside of the car, that is, to the hold door side. The feature is that it can be pushed up. According to the present invention, by making it possible to push up the protruding member from the hold door side, the lock can be easily released from the landing or the like even in the event of a power failure.

Further, in the elevator cab door device having the lock device of the present invention, a safety shoe is provided on the cab door, and a drive member contacting the protruding member is provided on an upper end portion of the safety shoe. It is characterized in that the projecting member can be pushed up by lifting the safety shoe from the outside of the car, for example, from the hall side of the elevator.

According to the present invention, by pushing up the safety shoe from the hold door side, the lock can be easily released from the landing or the like even when a power failure occurs.

Further, in the elevator cab door device having the lock device of the present invention, the protruding member of the lock pin in the locked state is closed at the upper end of the safety shoe or the upper end of the door by the door closing operation. It is characterized in that an inclined member for pushing up is provided.

According to the present invention, even if the lock pin is lowered when the door is open during adjustment or maintenance work, the lock pin collides with the cab door when the door is closed. It can be prevented.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) Referring to FIG. 7, in an elevator 100 according to the present embodiment, one end of a rope 103 hanging from a hoisting machine 102 arranged in a machine room is connected to a car room 104 in a hoistway 101 of a building. And the other end is balanced 105
Are linked to. The doorway 108 of the car room 104 is provided corresponding to the hall door 107 of the hall platform 106 on each floor, and the car room doors 10 and 20 of both sides are provided.

FIG. 1 is a perspective view showing the state of the cab door lock device according to the first embodiment of the present invention as seen from the hall side, and FIG. 2 shows the structure of the cab door lock device according to the present embodiment. (A) is a front view, (b) is a plan view,
(C) is a side view, and is partially transparent or omitted for the sake of explanation.

As shown in FIG. 1, a hanger rail mounting plate 32 is provided on a frame 104a (FIG. 7) which constitutes a beam above the entrance and exit of the cab, and the hanger rail 3 is provided there.
0 is set. The left and right cab doors 10 and 20 are the hanger roller support plates 11 and 21 and the hanger roller 11.
It is installed so that it can freely move along the hanger rail 30 via a and 21a, and the left and right doors 10 and 20 are driven symmetrically in conjunction with each other by a drive mechanism (not shown). A pair of hanger roller support plates 11 and 21 are provided at the upper part of each door and near both side edges. At the position of the hanger rail mounting plate 32 above the door-stop portion 31 of the car room doors 10 and 20, the lock drive mechanism 50 by the electromagnetic drive of the car room door lock device is attached.

Brackets 12, which are fixing members for locking the doors, are provided at the upper ends of the hanger roller indicating plates 11 and 21 on the door-stop portion 31 side of the cab doors 10 and 20, respectively.
22 are attached integrally. This bracket 1
Openings formed in the horizontal portions formed at the upper ends of 2, 22 in the door opening and closing direction, for example, elongated holes 12a, 2
2a is opened therethrough, and when these long holes are overlapped with each other in the door closed state, an integrated hole that penetrates vertically is formed.
The elongated holes are provided for the purpose of timing the operation of the lock pin 52 and the swing lever 57, which will be described later. Further, safety shoes 13, 23 are attached to the door-stop portions 31 of the doors 10, 20, respectively. The safety shoes 13 and 23 are supported by links 13a and 23a pivotally attached to the side surfaces of the doors 10 and 20 so as to be rotatable in the direction of the arrow. The links 13a and 23a are arranged above and below each door in pairs. Thus, the safety shoes 13, 23 can be moved diagonally up and down in parallel with the door stop portion 31.

As shown in FIGS. 1 and 2, a lock pin 52 is attached so as to be able to move up and down so as to pass through a central portion of a base 51 of the lock drive mechanism 50, and is attached to an intermediate portion of the lock pin 52. Is formed with a collar-shaped portion 52a having a large diameter. A compression spring 53 is attached to the upper side of the brim 52a, and the upper end of the compression spring 53 is in contact with a support plate 54 attached to the back plate 51a. The upper portion of the lock pin 52 penetrates the support plate 54 and is connected to the armature 55 a of the electromagnetic actuator 55.

The lock pin 52 penetrates through the base 51 of the lock drive mechanism 50 and projects downward, and further penetrates through the elongated holes 12a and 22a of the brackets 12 and 22.

As shown in FIG. 2, a position detecting rod 60 is provided at the connecting portion between the lock pin 52 and the armature 55a so as to project toward the proximity sensors 61a and 61b. The proximity sensors 61a and 61b are attached to a mounting plate 62 provided at the tip of the support plate 54. In FIG. 2, the position detection rod 60 is a lower proximity sensor 61b.
The state where the lock pin 52 is lowered in the vicinity of is detected. A swing lever 5 is provided near the brim 52a.
7 is swingably assembled around the vertical axis n,
A rod 57a is attached to the tip of the swing lever 57 so as to project downward. The bar 57a extends downward from the notch 51b of the base 51 and contacts the tip of the bracket 12, and is pushed in the door closing direction by the edge 12b of the bracket 12 by the door closing operation. However, the lower bracket 22 attached to the other door 20 does not come into contact with the rod 57a.

As shown in FIG. 2, this swing lever 57
Is a compression spring 59 provided on the outer circumference of a guide rod 58 rotatably assembled to the swing lever 57, and is biased in the door opening direction. Further, a stopper 57b is mounted on the base 51 so as to limit the swing angle of the swing lever 57 in the door opening direction.

A manual operating rod 63 is attached to the brim 52a in a direction projecting to the outside of the car, that is, the hold door 107 side. Further, as shown in FIG. 2, a shock absorber 64 is attached to the brim portion 52a so as to face downward. The tip portion of the shock absorber 64 contacts the receiving rubber 65 provided on the base 51.

When the electromagnetic actuator 55 is energized, the armature 55a is attracted upward, the lock pin 52 moves upward, and the lock pin 52 comes out of the long holes 12a and 22a of the brackets 12 and 22 and the cab door. The locks of 10 and 20 are released.

When the electromagnetic actuator 55 is de-energized, the lock pin 52 moves downward due to the force accumulated in the compression spring 53 and its own weight, so that the lock pin 52 is moved to the elongated holes 12a, 12b as shown in FIG. Car room door 1 through
0 and 20 are locked.

The operation of the present embodiment configured as described above will be described below. As shown in FIG. 2, the elevator car 104 (FIG. 7) moves with the car room doors 10 and 20 closed and the lock pin 52 lowered and locked, and the vicinity of the landing position of the hall platform 106. When it reaches, the electromagnetic actuator 55 is energized by a control means (not shown). Then, the armature 55a is pulled up and the lock is released, and the compression spring 53 is contracted to the state shown in FIG. FIG. 3 is a three-sided view showing a state in which the lock pin 52 is pulled up, and (a), (b), and (c) are a front view, a plan view, and a side view, respectively, as in FIG. 2. Is.

At this time, the position detecting rod 60 is stopped near the upper proximity sensor 61a and detects the state where the lock pin 52 is raised.

As the hall doors 10 and 20 are opened together with the hold door 107 as shown in FIG. 7, the brackets 12 and 22 move in the door opening direction shown by the arrow. Then, the rod 57a of the swing lever 57, which has been pushed in the door closing direction, is pushed back in the door opening direction by the spring 59 and is rotated. Further, the upper surface A of the swing lever 57 enters the lower surface B side of the brim-shaped portion 52a, contacts the stopper 57b, and stops. This state is shown in FIG. Similarly to the above, also in FIG. 4, (a) is a front view,
(B) has shown the top view.

Next, when the electromagnetic actuator 55 is de-energized, the lock pin 52 is lowered a little and the collar 5
The lower surface B of 2a contacts the upper surface A of the swing lever 57 and stops. At this time, since the amount by which the lock pin 52 descends is small, the position detection rod 60 remains in the vicinity of the proximity sensor 61a, and the state in which the lock pin 52 is raised is detected. In this way, even if the electromagnetic actuator 55 is not energized, the lock pin 52 is maintained in the pulled-up state.

When the passengers get in and out of the elevator car room 104 (FIG. 7), the car room doors 10 and 20 move in the door closing direction. The bracket 12 contacts the rod 57a of the swing lever 57 at a position about several mm before the door is completely closed, and thereafter the rod 57a of the swing lever 57 is continuously pushed in the door closing direction. Then, the swing lever 57 has the brim portion 5
The lock pin 52 is pushed out from the lower side of 2a, descends due to the force and gravity accumulated in the compression spring 53, penetrates the long holes 12a and 22a without contacting the brackets 12 and 22, and locks. To complete. Then, the state returns to the state shown in FIG. 2 again.

When the lock pin 52 descends,
The tip of the shock absorber 64 collides with the receiving rubber 65 provided on the base 51 to properly absorb the kinetic energy of the lock pin 52, and prevent a large operation noise from being generated.

Even if the elevator stops at a place other than the hall platform 106 due to some trouble,
As described above, the passenger is prevented from prying open the cab door from the inside. In addition, if the elevator is guided to the front of the landing after stopping at a place other than the landing, the lock pin 52 can be easily pushed up by pushing it up from the red hold door side of the manual operation rod 63 provided on the brim 52a. It is possible to unlock even if there is a power outage.

The following effects are obtained in this embodiment. After the cab doors 10 and 20 are opened, the swing lever 57 can enter the lower surface B side of the collar portion 52a of the lock pin 52 and keep the lock pin 52 pulled up. It is not necessary to keep the actuator 55 energized. Therefore, power consumption can be suppressed, and adjustment and maintenance can be easily performed in a non-energized state.

When the cab doors 10 and 20 are closed, the lock pin 52 can be lowered and automatically locked by pressing the swing lever 57 immediately before the door is closed. Therefore, the switch signal is transmitted and processed. The time for controlling the electromagnetic actuator can be omitted. Furthermore, a few meters that completely close the door
Since it can be automatically locked at an appropriate timing before m without using a control signal, it can be prevented that the reopening operation is locked when it is necessary, and a smooth reopening operation can be performed. Moreover, since the lock timing can be mechanically determined, the adjustment is extremely easy.

As described above, even if some trouble occurs during the movement of the elevator and the elevator stops in a place where the elevator is not in the power outage, the passenger can pry open the door of the cab from inside. It is possible to prevent falling into the hoistway.

Further, by pushing up the manually operated rod 63 which is attached to the collar portion 52a of the lock pin 52 so as to project toward the hold door side, the lock can be easily released from the landing or the like even in the event of a power failure. Since the lock pin 52 in the lowered state is urged further downward by the compression spring 53, it is possible to prevent the lock from being released even when a large vertical acceleration is generated due to an emergency stop operation of the elevator. (Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. Figure 5 shows the left cab door 1
It is the schematic diagram which saw the safety shoe 13 of 0 from the hole side.

As described with reference to FIG. 1, the cab door 10,
Safety shoes 13 and 23 are attached to 20, and a pair of links 13a and 23a of equal length are attached to the safety shoes 13 and 23 near the upper and lower ends of the safety shoes 13 in parallel and rotatable. Therefore, the safety shoes 13 and 23 can swing while maintaining parallel to the door stop portion 31. As shown in FIG. 5, an inclined plate 14 having an inclined portion 14a and a steep inclined portion 14b having a reverse inclination is attached to the upper end portion of the left safety shoe 13. The inclined portion 14a is located near the manually operated rod 63 in the locked state. When the electromagnetic actuator 55 is energized, the lock pin 52 is pulled up, and the manual operation rod 63 moves away from the inclined portion 14a.

The operation of the second embodiment configured as described above will be described below. After guiding the elevator car room 104 stopped to a place other than the landing due to some trouble or the like to the hall landing 106, in the event of a power failure or the electromagnetic actuator 55 being inoperable, the double-open hold door 107 is slightly Open it and open the safety shoe 13 of the cab door upward from the gap as shown in Fig. 5 (in the direction of the arrow).
Rock to. Then, the inclined plate 14 moves from the position A to the position B, the manually operated rod 63 is pushed upward by the inclined portion 14a and moved to the position 63B, and the lock pin 52 comes out of the brackets 12 and 22 and the lock is released. Then, the cab doors 10 and 20 can be opened.
When the electromagnetic actuator 55 is energized and the lock pin 52 is pulled up, the manual operation rod 63 is separated upward. Therefore, the inclined portion 14a and the manual operation rod 63 are opened and closed by the normal opening and closing of the cab door 10. Will never come into contact. (Third Embodiment) Next, a third embodiment will be described with reference to FIG. In the present embodiment, it is assumed that the door closing operation is performed with the lock pin 52 lowered for some reason when the door 10 is open. At this time, the inclined portion 14b comes into contact with the manual operation rod 63 at the position C by the door closing operation. After that, the door 10 is further moved to reach the position D, and the manual operation rod 63 is pushed up to the position 63D. Meanwhile, the brackets 12 and 22 pass under the lock pin 52,
After that, the manual operation rod 63 is positioned on the side of the inclined portion 14a beyond the top 14c of the inclined portion 14b and descends, and the lock pin 52 penetrates the elongated holes 12a and 22a of the brackets 12 and 22.

As described above, even if the lock pin 52 is lowered in the door open state by pushing the swing lever 57 at the time of adjustment or maintenance work, the inclined portion 14b is Since the manual operation rod 63 is pushed up, it is possible to prevent the lock pin 52 and the brackets 12 and 22 from colliding with each other. In the above embodiment, the inclined portion 14b is provided on the inclined plate 14 mounted on the safety shoe 13, but it may be provided near the tip of the bracket 12. Alternatively, the bracket 22 attached to the other door 20 may be provided with a member having an inclined portion opposite to the inclined portion 14b. Also by this, it is possible to prevent the collision between the bracket 12 and the lock pin 52 by pushing up the manual operation rod 63 at the same time when the door is closed.

In the above embodiment, the case where the cab door is a double door type has been described. However, it is needless to say that the present invention can be applied to other structures such as a single door type. Nor.

[0043]

As described above, according to the present invention, even if the elevator is stopped due to a power failure in a place other than the landing due to an accident or a failure, the passenger can pry open the door of the cab from the inside and the hoistway. It is possible to prevent the fall. For this reason, it is not necessary to provide a large number of fetcher plates in the hoistway. Moreover, even when the door is open, there is no need to constantly energize the electromagnetic drive, power consumption is kept low, adjustments and maintenance can be performed easily, and it is possible to prevent unnecessary time from the door closing operation to the elevator starting operation. Yes, smooth reopening is possible. As a result, it is not necessary to keep the drive device energized when the door is opened, and when the door is closed, it can be locked at an appropriate timing without any signal processing or control, so power consumption can be suppressed, smooth door closing, and easy adjustment can be performed. An elevator car room door device having a lock device can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment.

FIG. 2 is a three-sided view showing an essential part of the first embodiment, in which (a) is a front view, (b) is a plan view, and (c) is a side view.

FIG. 3 is a three-sided view showing an essential part of a state in which a lock pin according to the first embodiment is pulled up, (a) is a front view, (b) is a plan view, and (c) is a side view.

FIG. 4 is a front view and (b) is a plan view showing a main part in a stopped state where a lock pin is pulled up in the first embodiment.

FIG. 5 is a schematic view for schematically explaining the operation of the tilt plate of the second embodiment.

FIG. 6 is a schematic view for schematically explaining the operation of the tilt plate of the third embodiment.

FIG. 7 is a schematic diagram illustrating an elevator according to the first embodiment.

[Explanation of symbols]

10, 20 ... Car room door, 11, 21 ... Hanger roller, 12, 22 ... Bracket, 21a, 22a ... Oblong hole,
13, 23 ... Safety shoe, 14 ... Inclined plate, 1
4a ... Inclined part, 14b ... Inclined part, 30 ... Hanger rail, 31 ... Door contact part, 32 ... Hanger rail mounting plate, 50 ... Lock drive mechanism, 51 ... Base, 52 ... Lock pin, 52a ... Collar part , 53 ... compression spring, 54 ... support plate, 55 ... electromagnetic actuator / 55a ... amateur, 57 ... swing lever, 57a ... rod, 57b ... stopper, 58 ... guide rod, 59 ... spring, 60 ... position detection rod,
61a, 61b ... Proximity sensor, 62 ... Mounting plate, 63
... manual operating rod, 64 ... shock absorber, 65 ... receiving rubber, 100 ... elevator, 101 ... hoistway, 104
… Car room, 104a… frame, 106… hall platform, 1
07 ... Holdor, 108 ... Exit

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kazuhiro Izumi             1F Toshiba Town, Fuchu City, Tokyo             Fuchu factory inside F term (reference) 3F307 AA02 BA01 BA02 CC01 CC08

Claims (5)

[Claims] 1. An elevator cab door that is installed at an entrance of an elevator cab and opens and closes along a rail provided on a frame above the entrance, an electromagnetic drive device attached to the frame, and the electromagnetic drive. A lock pin that is pulled up when the device is energized and is urged downward by a spring when it is not energized; and a fixing member that is integrally provided on the upper portion of the cab door and that has an opening into which the lock pin is inserted, It is biased by a spring in the door opening direction of the car room door, contacts the fixing member or the upper part of the car room door near the door closing position of the car room door, and the car room door is further driven in the door closing direction. By moving the lock pin to a position that does not hinder the lifting and lowering of the lock pin, the cab door is lifted by being driven in the door opening direction from the door closed state. Serial elevator cab door apparatus having a locking device locking pin, comprising a movable member which moves to a position that prevents descending. 2. The lock pin is provided with a protrusion on the movable member side, and the movable member is a lever supported so as to be swingable about a vertical axis, and is engaged below the protrusion. An elevator cab door device having a lock device according to claim 1, wherein the door device is an elevator cab door device. 3. The lock pin is provided with a projecting member projecting to the outside of the car compartment, and the projecting member can be pushed up from the outside of the car compartment. An elevator cab door device having the lock device according to any one of Items 2. 4. A safety shoe is provided on the cab door, and a drive member that comes into contact with the protruding member is provided on an upper end portion of the safety shoe, and the safety shoe is lifted from the outside of the cab. The elevator cab door device having a lock device according to claim 3, wherein the protrusion member is configured to be pushed up. 5. An inclined member is provided at an upper end of the safety shoe or an upper end of the door to push up the protruding member of the lock pin in a locked state by a door closing operation of the door. An elevator cab door device having the lock device according to claim 3.