JP2012218834A - Locking device of elevator landing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably unlock a landing door with a simple constitution and at low cost.SOLUTION: A locking device 1 of an elevator landing includes a locking body 3 which is provided on a door hanger 7 having a roller mounted on an upper edge of a landing door 2, has a hook 5 and a latch 9 to be locked to the hook 5, and locks the door 2 by locking the latch 9 to the hook 5, and an unlocking body 4 having a key hole piece 11 with a rotary shaft 10 to be turned when turning an inserted key, and a working piece 16 which is mounted on a fore end of the rotary shaft 10 and interlockingly turned with the turn of the rotary shaft 10, and a wire 6 with one end thereof being connected to the working piece 16 and the other end thereof being connected to the latch 9. By turning the key, the latch 9 is turned to release the locking to the hook 5.

Description

  The present invention relates to a lock device for an elevator hall that unlocks a landing door by releasing a latch locked to a latch provided on a door hanger.

The door of the elevator hall is locked by a locking body, but is configured to be unlockable by an operation of the unlocking body by maintenance personnel at the time of inspection or emergency.
For example, as a lock device for an elevator hall, the locking body and the unlocking body are connected with a club and an arm, a dedicated key is inserted into the keyhole of the landing door, and the keyhole is rotated clockwise. Thus, there is known an elevator hall locking device in which the arm rotates counterclockwise and the locking body hooked on the club is unlocked (see, for example, FIG. 1 of Patent Document 1).

Japanese Utility Model Publication No. 1-177577

However, the elevator hall lock device having the above-described configuration has the following problems. B. A club, arm, etc. are arranged between the locking body and the unlocking body, the structure is complicated, the number of parts is large, and the cost is high.
B. When unlocking from the landing side, the rotation direction of unlocking is not known, and there is a risk that unlocking may not be possible due to reverse rotation (erroneous operation), or the unlocked body may be damaged and unlocked.
C. Since the arm rotation is not fixed, it may vibrate and generate noise during normal door opening and closing.

  An object of the present invention is to solve such a problem, and to obtain an elevator landing lock device that is simple in structure and inexpensive and can reliably unlock a landing door. With the goal.

A lock device for an elevator hall according to the present invention is provided on a door hanger with a roller attached to an upper edge of a hall door, and has a latch and a latch that latches to the latch, and the latch latches to the latch. A locking body that locks the door,
An unlocking body having a keyhole base having a rotating shaft that rotates by rotating the inserted key, and an operating piece that is attached to the tip of the rotating shaft and rotates in conjunction with the rotation of the rotating shaft;
One end is connected to the operating piece, and the other end is connected to the latch,
By the rotation of the key, the latch is rotated and the latch with the latch is released.

  According to the lock device for an elevator hall according to the present invention, since the unlocking body and the locking body are connected by the connecting line, the landing door can be unlocked with a simple configuration.

It is a perspective view when the lock apparatus of the elevator hall of Embodiment 1 of this invention is seen from the hoistway side. It is a principal part enlarged view of FIG. FIG. 3A is a perspective view showing the lock device for the elevator hall in FIG. 1, and FIG. 3B is an exploded perspective view of FIG. It is a perspective view which shows when the locking body of the elevator hall of FIG. 1 is unlocked. 5 (a) is a perspective view showing a lock device for an elevator hall according to Embodiment 2 of the present invention, and FIG. 5 (b) is an exploded perspective view of FIG. 5 (a). 6 (a) is a perspective view showing a lock device for an elevator hall according to Embodiment 3 of the present invention, and FIG. 6 (b) is an exploded perspective view of FIG. 6 (a).

Embodiment 1 FIG.
1 is a perspective view of a lock device 1 (hereinafter abbreviated as “lock device 1”) of an elevator hall according to Embodiment 1 of the present invention as viewed from a hoistway side, and FIG. 2 is an enlarged view of a main part of FIG. is there.
The locking device 1 includes a locking body 3 that locks the door 2, an unlocking body 4 that unlocks the locking body 3, and a connecting line that connects the unlocking body 4 and the locking body 3 via a trigger 5. And a wire 6.
The locking body 3 includes a latch 8 provided on a door hanger 7 with a roller attached to the upper edge of the landing door 2, and a latch 9 that is locked to the latch 8.
As shown in FIGS. 3A and 3B, the unlocking body 4 includes a keyhole base 11 having a rotating shaft 10 that rotates by rotating an inserted key, and a tip portion of the rotating shaft 10. Are provided with a base 12, a hexagonal ring 13, a nut 14, and a washer 15, and a wire support fitting 17 provided at the end of the operating piece 16 and connected to the end of the wire 6. is doing.

  In the lock device 1 according to this embodiment, when a maintenance person tries to open the door 2 at the time of inspection or emergency, the maintenance staff inserts a dedicated key into the hole of the keyhole cap 11 from the landing side and rotates it in the unlocking direction. . As a result, the rotary shaft 10 of the keyhole base 11 rotates, the operating piece 16 integrated with the rotary shaft 10 rotates in a clockwise direction, the wire 6 is pulled downward, and the latch 9 is counterclockwise. The lock is released from the latch 8 and the door 2 is unlocked, and the door 5 can be opened (see FIG. 4).

According to the lock device 1 according to this embodiment, a keyhole base 11 having a rotary shaft 10 that rotates by rotating an inserted key, and a rotary shaft 10 that is attached to the distal end of the rotary shaft 10 in conjunction with the rotation of the rotary shaft 10. And a wire 6 having one end connected to the operation piece 16 and the other end connected to the latch 9. The latch 9 is rotated and latched by the rotation of the key. 8 is released.
Therefore, compared with the conventional locking device, the number of parts between the keyhole cap 11 and the locking body 3 can be reduced, and the manufacturing cost is reduced.

Embodiment 2. FIG.
FIG. 5A is a perspective view showing an unlocked body 4A of the locking device 1 according to Embodiment 2 of the present invention, and FIG. 5B is an exploded perspective view of FIG. 5A.
In the unlocking body 4A of the locking device 1 of this embodiment, a stopper 20 is interposed between the base 12 and the hexagonal ring 13. The stopper 20 enables the operating piece 16 to rotate only in the clockwise direction, that is, the unlocking direction, and prevents the counterclockwise rotation.
Other configurations are the same as those of the locking device 1 of the first embodiment.

  According to the locking device 1 according to this embodiment, even when the key is accidentally rotated in the direction opposite to the unlocking direction when unlocking from the landing side, the rotation is restricted by the stopper 20 and rotates only in the unlocking direction. The door 2 can be reliably unlocked from the landing without any erroneous operation or damage.

Embodiment 3 FIG.
6A is a perspective view showing an unlocked body 4B of the lock device 1 according to Embodiment 3 of the present invention, and FIG. 6B is an exploded perspective view of FIG. 6A.
In the unlocking body 4 </ b> B of the locking device 1 of this embodiment, a coil spring 21 is provided between the stopper 20 and the operating piece 16. The coil spring 21 is loosely inserted into the rotary shaft 10, the tip of the spring 21 abuts on the lower end surface of the stopper 20, and the stopper 20 is always urged toward the operating piece 16 by using the twisting force of the coil spring 21. is doing.
Other configurations are the same as those of the locking device 1 of the first embodiment.

According to the lock device 1 according to this embodiment, the stopper 20 is always biased toward the operating piece 16 by the twisting force of the coil spring 21.
When the stopper 20 is rattled with respect to the keyhole base 11, there is a concern that the stopper 20 collides with the operating piece 16 due to vibration that occurs when the door 2 is opened and closed, and noise is generated.
However, since the stopper 20 is always biased to the operating piece 16 by the coil spring 21, the generation of this noise is prevented.
Further, since the coil spring 21 is used as the spring, the mounting is simple, the weight is light, the manufacturing is easy, and the cost is reduced.

In addition, although the locking device 1 of each Embodiment 1-3 used the wire 6 made into the connection line in all, of course, this wire 6 is an example and the intensity | strength which transmits the rotational force of the action | operation piece 16 to the wire 6 is used. Any flexible material may be used.
Further, the coil spring 21 is also an example, as long as the stopper 20 is always urged toward the operating piece 16 side.

  DESCRIPTION OF SYMBOLS 1 Locking device, 2 landing door, 3 Locking body, 4,4A, 4B Unlocking body, 5 Trigger, 6 Wire (connection line), 7 Door hanger, 8 Hatch, 9 Latch, 10 Rotating shaft, 11 Keyhole cap, 12 base, 13 hexagonal ring, 14 nut, 15 washer, 16 actuating piece, 17 wire support bracket, 20 stopper, 21 coil spring.

Claims (5)

A door hanger with a roller attached to the upper edge of the landing door, having a latch and a latch that latches to the latch, and a locking body that locks the door when the latch is latched to the latch;
An unlocking body having a keyhole base having a rotating shaft that rotates by rotating the inserted key, and an operating piece that is attached to the tip of the rotating shaft and rotates in conjunction with the rotation of the rotating shaft;
One end is connected to the operating piece, and the other end is connected to the latch,
The elevator hall lock device according to claim 1, wherein the latch is rotated by the rotation of the key to be unlocked from the latch.   The unlocking body has a stopper provided between the keyhole base and the operating piece and abutting against an end of the operating piece, and the operating piece is rotated only in one direction by the stopper. The elevator hall lock device according to claim 1, wherein:   The said unlocking body is provided between the said stopper and the said operation piece, The spring which urges | biases the said stopper to the said operation piece side is provided, The locking device of the elevator landing of Claim 2 characterized by the above-mentioned. .   4. The elevator hall lock device according to claim 3, wherein the spring is a coil spring.   The said connecting line is a wire, The elevator landing lock apparatus of any one of Claims 1-4 characterized by the above-mentioned.

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