JPH04292392A - Cage door locking device for elevator - Google Patents

Abstract

PURPOSE:To relieve a feeling of uneasiness by rapidly rescuing passengers when an elevator cage under running is rapidly stopped between elevator halls. CONSTITUTION:An unlocking device 70 rotates a stiffening plate 7 by pulling a wire rope 35 for release and releases contact of the stiffening plate 7 with a stopper 21. The unlocking device is located to the outside of a cage, and even when the cage is rapidly stopped, a cage door 2 is opened from the outside of the cage without moving the cage.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] This invention relates to an elevator car door locking device for locking a car door between landings by a contact plate provided on the car door and a stopper provided on the hoistway wall between the landings. It is something.

0002

2. Description of the Related Art FIG. 3 is a front view of a conventional elevator car similar to that disclosed in, for example, Japanese Patent Application Laid-Open No. 56-93682. In the figure, a car door 2 is provided at the front of a car room 1. One side 2a of the car door 2 opens to the left in the figure, and the other 2b opens to the right in the figure. The girder 3 at the top of the car room 1 is fixed to a car frame (not shown) by a girder attachment arm (not shown). A rail 3a and a door machine 4 are attached to the girder 3. The car door 2 is suspended from a rail 3a by a door hanger (not shown) and moves along the rail 3a. A door motor 4a is attached to the door machine 4. The driving force of this door machine 4 is transmitted to the car door 2 by the arm 5. An engagement plate 6 and a stop plate 7 each having an L-shaped cross section and extending in the vertical direction are fixed to the front surface of the car door 2.

FIG. 4 is a front view of the elevator landing door device shown in FIG. 3, seen from the inside of the hoistway, and FIG. 5 is a plan view showing the door device shown in FIGS. 3 and 4 when the car has landed on the floor. In the figure, a hoistway wall 11 is provided with a landing entrance/exit frame 12 and a landing door 13. One side 1 of landing door 13
3a opens to the right in the figure, and the other 13b opens to the left in the figure. A hanger case 14 is attached above the entrance/exit frame 12 of the hoistway wall 11. The hanger case 14 has a rail 1 for the landing door 13.
5 is attached.

[0004] An engagement roller 16 that engages with the engagement plate 6 on the car side is attached to the front of the other landing door 13b. An interlock 17 is provided above the landing door 13 to lock the landing door 13 when the door is closed. This interlock 17 consists of a latch 17a that moves together with the landing door 13, and a latch 17b fixed to the hanger case 14. A connecting rod 18 is provided between the arm of the engagement roller 16 and the latch 17a.
When the engagement roller 16 is pushed to the left in the figure, the latch 17a
is rotated and removed from the latch 17b. Pulleys 19 are provided at both ends of the hanger case 14 in the width direction.
is provided. A wire rope 20 is wound between these pulleys 19. wire rope 20
are fixed to the respective landing doors 13a, 13b, thereby interlocking the opening and closing of the left and right landing doors 13a, 13b.

[0005] A stopper 21 having an L-shaped cross section and extending in the lifting direction is fixed between each landing on the hoistway wall 11. These stoppers 21 face the contact plate 7 as shown in FIG. 5 in plan view. These contact plate 7 and stopper 21 constitute a conventional car door lock device.

In the conventional elevator constructed as described above, when the car stops at a position farther away than B in FIG. Because of this contact, the car door 2 can only be opened slightly. This prevents passengers in the car from accidentally opening the car door 2 and falling into the hoistway. Therefore, the stoppers 21 are arranged continuously on the hoistway wall 11 at a pitch less than C up to where the landing of the next floor is located.

[0007]

[Problems to be Solved by the Invention] In the conventional elevator configured as described above, when a running car suddenly stops between landings and a passenger is trapped inside the car, a rescue worker must needs to be rescued. At this time, the landing door 13 on the nearest floor can be opened by releasing the latch 17a with a special tool. However, the car door 2 cannot be opened because it is locked by the contact plate 7 and the stopper 21. For this reason, the rescue worker first goes to the machine room of the elevator, opens the brake of the hoisting machine (not shown), and manually moves the car until it comes to range B where the contact plate 7 does not contact the stopper 21. After that, the passenger must be rescued by opening the landing door 13 and the car door 2. Therefore, in conventional elevators, the car door locking device sometimes takes time to rescue passengers, and there are problems such as increasing the sense of anxiety of trapped passengers.

[0008] This invention was made with the aim of solving the above-mentioned problems, and it is possible to quickly rescue passengers when the car suddenly stops, thereby alleviating the passengers' sense of anxiety. It is an object of the present invention to obtain an elevator car door locking device that can reduce the noise.

[0009]

[Means for Solving the Problems] An elevator car door lock device according to the present invention includes a lock release device for displacing a contact plate by an operation from outside the car and releasing the contact plate from a stopper. It is installed outside the car.

0010

[Operation] In this invention, when a passenger trapped inside the car is rescued from outside the car, the lock is released by operating the lock release device from outside the car and displacing the plate, and then the car door is released. open.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an elevator car according to an embodiment of the present invention, and FIG. 2 is a plan view showing the car and the landing door device when the car has landed on the floor, and is the same or equivalent to FIGS. 3 to 5. are given the same reference numerals and their explanations will be omitted. In the figure, a contact plate 7 having an L-shaped cross section is rotatably attached to the front of the car door 2 in the direction of arrow D in FIG. 2 via bearings 31a and 31b arranged at the upper and lower ends. A torsion spring 32 is provided at the upper end of the contact plate 7.
The torsion spring 32 biases the contact plate 7 in the direction opposite to the arrow D in FIG. A positioning stopper 33 is fixed to the car door 2, with which the contact plate 7 contacts in the state shown in FIG.

A pair of pulleys 34a and 34b are attached to the top and bottom of the abutment plate 7 of the car door 2. A release wire rope 35 is wound around these pulleys 34a and 34b. The release wire rope 35 has one end fixed to the upper end of the contact plate 7 and the other end fixed to the lower end of the contact plate 7. Lock release device 4 of this embodiment
0 consists of the above-mentioned bearings 31a, 31b, torsion spring 32, pulleys 34a, 34b, and release wire rope 35. By pulling the release wire rope 35 in the direction of arrow A in the figure, the plate 7 moves in the direction of arrow A. It is designed to rotate in the D direction.

In the elevator constructed as described above, when a running car suddenly stops between landings and a rescue worker rescues a trapped passenger, he or she first releases the latch 17a using a special tool. Open the landing door 13 on the nearest floor. Next, attach the release wire rope 35 to the
2 in the direction of arrow A, and sufficiently rotate the contact plate 7 in the direction of arrow D in FIG. Thereby, the lock of the car door 2 is released, the car door 2 can be opened without the contact plate 7 coming into contact with the stopper 21, and the passenger can be rescued.

[0014] As described above, since the elevator of the above embodiment is provided with the lock release device 40, it is possible to release the contact plate 7 from the stopper 21 from outside the car, thereby preventing the car from suddenly stopping. In such cases, the rescue worker can quickly rescue the passenger without having to move the car by hand, and the passengers' sense of anxiety is alleviated.

[0015] In the above embodiment, the lock release device 40
In this example, the abutting plate 7 is rotated by operating the release wire rope 35, but the present invention is not limited to this. For example, the abutting plate 7 is rotated to a position where a passenger can be rescued.
It may also be something that slides. Also,
In the above embodiment, the contact plate 7 and the stopper 21 have an L-shaped cross section, but these shapes are not particularly limited. Furthermore, in the above embodiment, the car door 2 to which the car door lock device is attached is a two-door center-opening car door, but for example, one or more side-opening doors or four or more center-opening car doors may also be used. It goes without saying that the present invention can be applied to various car doors.

[0016]

[Effects of the Invention] As explained above, the elevator car door locking device of the present invention includes a lock release device for displacing the contact plate by operation from outside the car and releasing the contact plate from the stopper. Since it was installed outside the basket,
If the car suddenly stops, the car door can be opened from outside the car without moving the car, and the passengers can therefore be rescued quickly, thereby reducing passengers' feelings of anxiety. play.

[Brief explanation of drawings]

FIG. 1 is a front view showing an elevator car according to an embodiment of the present invention.

FIG. 2 is a plan view showing the car and the landing door device when the car has landed on the floor.

FIG. 3 is a front view showing an example of a conventional elevator car.

FIG. 4 is a front view of the elevator landing door device of FIG. 3, viewed from the inside of the hoistway.

5 is a plan view showing the door device of FIGS. 3 and 4 when the car has landed on the floor; FIG.

[Explanation of symbols]

1 Car room 2 Car door 7　　　　　Touching board 11 Hoistway wall 21 Stopper 40 Lock release device

Claims (1)

[Claims] Claim 1: A contact plate provided on a surface of the car door facing the hoistway wall and a hoistway wall between the landings, and the contact plate makes the car door open between the landings. A locking stopper, and a lock release device provided outside the car to displace the contact plate by an operation from outside the car and release the contact plate from the stopper. Features: Elevator car door lock device.