JPH05155570A - Lock of elevator door - Google Patents

Abstract

PURPOSE:To reduce the sound caused when a lock contact makes contact with a lock when locking an elevator door. CONSTITUTION:A damper 25 is installed opposite to the arm portion 9f of an effector 9 which is freely rotatably attached to the door 7 of an elevator hall and the speed of the effector 9 when the door is locked is reduced so as to also reduce the speed at which a lock contact is closed, thereby reducing the sound of contact.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device for an elevator door.

[0002]

2. Description of the Related Art FIGS. 3 and 4 show, for example, Japanese Utility Model Publication 59-16.
FIG. 3 is a front view and a vertical cross-sectional view showing a conventional elevator door locking device disclosed in Japanese Patent No. 383, where 1 is a hanger case fixed to a wall 2 of an elevator hall, and 3 is a hanger case 1. A hanger plate that guides a rail 4 on a suspension vehicle 5 and hangs a door 7 at a landing that opens and closes an entrance / exit 6 of an elevator, 8 is a hanger case cover, and an upper part is arranged to cover the front surface of the hanger case 1. ing. Reference numeral 9 denotes an actuating member having an L-shape and an L-shaped bent portion pivotally attached to the hanger plate 3, and fixed to a lower portion of a mounting metal 10 fixed to the hanger case 1 on the left side in FIG. 3 on a horizontal side. A hook 9a is provided which engages with the fixed piece 11 and locks the door 7 at the landing when fully closed. 9b
A part of the horizontal side is bent at a right angle to urge the actuating body 9 counterclockwise in FIG.
And a protrusion for attaching the short-circuit contact 14 for short-circuiting the contact contact 13 at the time of locking and confirming that the locking is electrically completed, 15 is screwed into the protrusion 9b, and its tip is fixed to the hanger plate 3. In contact with the backing plate 16, the actuator 9
It is a stopper bolt that blocks the counterclockwise rotation of the hook at a predetermined position, and is for maintaining the engagement dimension between the hook 9a and the fixing piece 11. Reference numeral 9c denotes an unlocking side to which a shaft 18 for pivotally supporting the unlocking roller 17 is fixed from one side extending upward of the actuation body 9, and is bent in a Z shape as shown in FIG.
9d is a bent portion of the actuating body 9 and is a portion for accommodating the bearing 19, and a cylindrical seat 9e is welded to the actuating body 9. The actuating body 9 fits into this bearing 19 and one side is attached to the hanger plate 3 to form a Z shape. The shaft 21 fixed to the other side of the molded mounting plate 20 is rotated to perform unlocking and locking operations. Also,
A drive roller 22 is pivotally attached to the other end of the shaft 21. The drive roller 22 and the unlocking roller 17 are formed so that their outer diameters are substantially the same. Reference numerals 23 and 24 respectively denote a pair of engagement plates provided on a car door (not shown) so that the facing distance is changed by a cam or the like (not shown) when the car door moves.

Next, the operation will be described. When the car door faces the landing door 7, the unlocking roller 17 and the driving roller 22 are arranged between the engaging plates 23 and 24, and when the car door starts to open, the engaging plate 23 moves to the unlocking roller 17. Clash,
In FIG. 3, the unlocking roller 17 moves to the right, so that the actuating body 9 rotates clockwise about the shaft 21 and the actuating body 9 is rotated.
The hook 9a disengages from the fixed piece 11 and the unlocking is completed. Next, when the engagement plate 23 moves further to the right and starts contacting the drive roller 22, unlocking has already been completed, so that the car door moves, that is, the door 7 at the landing moves with the drive roller 22 together with the movement of the engagement plate 23. Press to start opening. Along with the opening operation of the car door, the gap between the engagement plates 23 and 24 is narrowed by a cam (not shown) or the like, and the drive roller 22 and the unlocking roller 17 are held without a gap, so that the door 7 at the landing is quiet. Driven. Also, when the door is closed, the engaging plate 2
The driving roller 22 and the unlocking roller 17 gripped by 3, 24 are released, the actuation body 9 is rotated counterclockwise by the weight of the weight 12, and the short-circuit contact 14 becomes the contact contact 13.
And the door close command is issued.

[0004]

Since the conventional elevator door locking device is constructed as described above, during the door closing operation, the cage-side engagement plate separates the landing-side actuating member from the hooking member of the actuating member. Has a problem that it locks with the fixing piece, and when the contact provided on the actuating body comes into contact with the switch, a sound is emitted, and the contact sound becomes louder as the door is closed at high speed.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain an elevator door locking device capable of suppressing the contact noise to a small level even when the door is closed at high speed.

[0006]

In order to achieve the above object, a lock device for an elevator door according to the present invention is provided with:
A velocity damping means for damping the velocity of the movable part of the actuating body is provided.

[0007]

In this locking device, the speed of the movable part of the actuation body is damped by the damper or the like during locking, so the closing speed when the contact point (locking contact) of the actuation body contacts the switch is damped, and The contact noise of the contacts is reduced even when the door is closed.

[0008]

【Example】

Example 1. 1 is a front view of an elevator door lock device according to a first embodiment of the present invention. In the figure, reference numeral 25 denotes a damper fixed to the hanger plate 3, which is installed at a position where it is almost in contact with the operating body 9 when unlocked. Other configurations are exactly the same as those in FIGS. 3 and 4 showing the conventional example.

In the first embodiment, the arm portion 9f of the actuating body 9 which rotates counterclockwise when locked is first the damper 2
5, the damper 25 damps the descending speed of the operating body 9. The hook 9a of the actuating body 9 starts to engage with the fixing piece 11 while damping the speed, and at the same time, the contact 14 provided on the actuating body 9 completes the contact with the contact contact 13 of the switch while damping the closing speed. Therefore, the contact 14
The contact sound of can be reduced.

Embodiment 2. 2 is a front view of an elevator door lock device according to a second embodiment of the present invention. This Example 2
In the above, the bearing portion of the actuating body 9 is constituted by the bearing 26 having a damping effect. That is, the operating body 9 is pivotally attached to the shaft 21 fixed to the mounting plate 20 via the damping bearing 26. Such a damping bearing is similar to that generally used in, for example, an ejector of a cassette deck, and the damping bearing 26 can also damp the speed at which the operating body 9 is locked. Above, two examples of the case of the damper 25 and the case of the damping bearing 26 have been shown as the velocity damping means of the movable portion of the actuation body 9.

[0011]

As described above, according to the present invention, when locking,
By dampening the locking speed of the actuating body, the closing speed at the time of contact with the switch of the lock contact is damped at the same time, so the contact noise is reduced and the door closes quietly even if the door is moved at high speed. There is an effect that can be obtained.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of the present invention.

FIG. 2 is a front view showing a second embodiment of the present invention.

FIG. 3 is a front view of a conventional example.

FIG. 4 is a vertical sectional view of a conventional example.

[Explanation of symbols]

 1 Hanger Case 2 Landing Wall 7 Landing Door 9 Actuator 9a Hook 9b Unlocking Piece 9f Arm Part 11 Fixing Piece 13 Contact Contact 14 Short-Circuiting Contact 21 Shaft 25 Damper 26 Damping Bearing

Claims (1)

[Claims] 1. An actuating member rotatably attached to the landing door is fixed to a fixing piece attached to a landing wall by opening and closing the car door when the car door faces the landing door. An elevator door lock device configured to be detachable from and attached to the elevator door lock device, wherein speed lock means for damping the speed of the movable portion of the actuating body is provided when the lock device is locked.