JPS62171888A - Door-closing detector for elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a door closing detection device for a two-panel, center-opening type door of a single engagement type in an elevator.

[Conventional technology]

First, an overall configuration diagram of a conventional single-engagement type two-door center-opening landing door will be described with reference to FIG. 2.

Incidentally, this is a Uzuki version of Utility Model Publication No. 52-119258. In the figure, 1 is a sill with a door guide groove, the right side is a driving door 2A, the left side is a driven door 2B, and each right hanger 3A.
, is suspended from the left hanger 3B, rolls on the door rail 4, and opens and closes from side to side. Right pulleys 5 are attached to both ends of this door rail 4.
A, left pulley 5B is rotatably equipped, and this right pulley 5
Rope 6A engages with A, and right hanger 3A and left hanger 3
B is connected. Further, a rope 6B is engaged with the left pulley 5B to connect the right hanger 3A and the left hanger 3B.

These connection points are rope joints 7A and 7B. 8
Door rail 4, pulleys 5A, 5B, lock switch 9
This is a case where it is equipped with. A normally open contact 10 is built into the lock switch 9.

Due to this rope connection, when the driving door 2A moves to the right, the driven door 2B moves to the left. In other words, both the door and the door open. The closing action is the reverse of this action. Reference numeral 11 denotes an engagement hook provided on the drive door 2A side, which engages with the lock switch 9 to lock the drive door 2A.

A grasping device 12 in which this engagement hook 11 is provided on the car side
The car door and the landing door are electrically opened and closed by engaging the car door and the landing door as a unit by the drive motor and link mechanism on the car side.

[Problem that the invention seeks to solve]

In the above conventional example, due to some reason, the rope 6
Suppose that A disconnects. As a result, the driven door 2B becomes independent of the drive piece 2A. Therefore, in response to a door closing command, the drive piece 2A closes via the grasping device 12, and the engagement hook 11 pushes up the lock switch 9. When the door is locked, the contact 10 inside the lock switch 9 closes, so the driven door is not opened. However, the driver (not shown) begins to move, resulting in what is known as open-door driving, which is an extremely dangerous situation.

SUMMARY OF THE INVENTION An object of the present invention is to provide a safe door closing detection device that prevents the car from running even if the rope breaks.

[Means for solving problems]

The above problem can be solved by providing a detection switch that is turned on by the contact force when the drive piece and the driven door come into contact at the closing end of the door.

[Operation] With this structure, even if the rope is cut and the drive piece is closed, if the driven door is open, the detection switch will not be turned on, and no activation command will be issued. Therefore, the car is safe because it never runs.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure is an overall configuration diagram of the boarding place according to the present invention, and the same reference numerals as in FIG. 2 indicate the same parts.

In the figure, 13 is a detection switch fixed to the drive piece 2A, 14 is a lever of the detection switch 13, and 15 is a normally open contact that is closed by operating the lever 14. 16
is a metal fitting attached to the closed end of the driven door.
is pressed by the closed end of the door.

Next, the present invention will be explained in detail.

First, a case where the rotor 6A is normal will be described.

In response to the closing command, the first gripping device 12 drives the drive piece 6A in the closing direction via the engagement hook 11.

Since the rope 6A is normal, the driven door 2B is also connected to the drive piece 2A.
When the rain door comes into contact with the door, the metal fitting 16 of the driven door 2B pushes the lever 14 of the drive piece 2A, and the normally open contact 15 closes, causing the car to run by a device not shown.

Next, when the rope 6A is cut, even if the drive piece 2A is completely moved to the closed end by the closing command as described above,
Unless the driven door 2B is closed, the lever 14 and the metal fitting 16 will not come into contact with each other, and as a result, the normally open contact 15 will remain open, resulting in the effect that the car will never be able to run.

In this embodiment, the drive piece 2A is provided with the detection switch 13 and the driven door 2B is provided with the metal fitting 16, but conversely, the drive piece 2A may be provided with the metal fitting 16 and the driven door 2B may be provided with the detection switch 13. Further, although the normally open contact 15 is closed due to direct contact between the lever 14 and the metal fitting 16, it is of course possible to provide a proximity switch in place of the detection switch 13 and operate the detection switch 13 without contact. . Further, in the embodiment, although the landing door is described, the door may be provided at a car door instead of the landing door.

〔Effect of the invention〕

According to the present invention, a detection switch is provided that is activated when the driving piece and the driven door are in complete contact with each other, so if the rope breaks and the driven door does not close, the car will never run. Therefore, a very safe door closing detection device can be provided.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram of a landing door according to an embodiment of the present invention, and FIG. 2 is an overall configuration diagram of a conventional landing door. 2A... Drive piece, 2B... Driven door, 3A... Right hanger, 3B... Left hanger, 4... Door rail, 5
A...Right pulley, 5B...Left pulley, 6A, 6B.
...Rope, 7A.

Claims (1)

[Claims] 1. One-side engagement type two-panel elevator center opening that opens and closes the driven door and the driven door synchronously by connecting the driving door and the driven door via a rope or chain and opening and closing the driving door. A door closing detection device for an elevator, characterized in that the driving door or the driven door is provided with a switch for detecting that the driving door and the driven door are closed, and a metal fitting for operating the switch.