Elevator door device

Abstract

Provided is an elevator door device with convenient assembling and high detecting precision to the foreign matter. A foreign matter detecting mechanism (9) which detects whether the elevator doors (1aand 1b) is clamped by the foreign matter is arranged along the height direction of the latch bar end of the elevator door (1a) and is composed of the buffering component (9a) that is open at one side, a pressure detecting body (10) and a base component (11) which is used as the base of the pressure detecting body is assembled into the buffering component from the open side. The excessive deformation of buffering component (9a) can be prevented before the deformation of the pressure detecting body (10) when foreign matter is clamped between the elevator doors (1a and 1b) thereby preventing thepressure escaping and sensitivity descending of the pressure detecting body (10). Thereby the high-precision foreign matter detecting can be executed. Besides, as the pressure detecting body (10) andthe base component (11) are assembled into the buffering component from the open side of the buffering component (9a) the assembling operation is facilitated.

Description

technical field [0001] The invention relates to an elevator door device, which can detect rope-like long foreign objects caught in the elevator door. Background technique [0002] Elevators have a safety function that, when a trolley is caught by the elevator door, a foreign object detection rod, usually called a safety shoe, protruding outside the doorstop side end of the elevator door is blocked from moving backward, thereby causing the elevator door to move back and open. However, when the elevator door clamps a flexible elongated foreign object such as a rope, the foreign object detection rod is blocked from retreating due to insufficient resistance. If there is a strip-shaped foreign object, it will not move backwards and open, which may cause the elevator to start running with a long strip-shaped foreign object in the elevator door and cause an accident. [0003] As a prior art, for example, in Japanese Patent Application Laid-Open No. 7-172745 of Patent Document 1, i...

AI Technical Summary

Problems solved by technology

Therefore, due to the dimensional relationship between the installation space and the pressure sensor, the insertion work may become difficult due to friction, etc.

On the other hand, in order to reduce friction, a lubricating member can be provided on the surface of the pressure sensor or inside the hollow space, but this will increase the cost.

In addition, if the size of the installation space is set to be larger than that of the pressure sensor and a gap is created between the two, the contact pressure will not be transmitted to the pressure sensor and the detection accuracy will decrease.

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