Novel triangular key and using method thereof

Abstract

The invention provides a novel triangular key and a using method thereof. The triangular key comprises a key rod; a triangular hole matched with a triangular cylinder of an elevator landing door is formed in one end surface of the key rod; outside threads are formed in the left end of the peripheral side wall of the key rod; the key rod is provided with a jacket in a sleeved manner and freely rotates in the jacket; the cross section of the key rod is circular; multiple first grooves are formed in the peripheral side wall of the key rod in an annular array by taking the center of a circle of the key rod as the center; a positioning rod is connected to the jacket; a cylindrical cavity is formed in the positioning rod and is internally provided with a cylindrical pin matched with the first grooves; the bottom surface of the cylindrical pin is obliquely arranged; the cylindrical pin is provided with a compression spring in the sleeved manner; and a second groove is formed in the upper surface of the positioning rod. By adopting the novel triangular key provided by the invention, the limitation of a human arm structure can be solved so that continuous rotation can be performed in a small corner range to realize unlocking, and the problem that the elevator landing door can be opened by irrelevant personnel at will in the prior art can be solved.

Description

technical field [0001] The invention relates to the technical field of an elevator triangular key, in particular to a novel triangular key and a using method thereof. Background technique [0002] The elevator triangular key is a door-opening tool commonly used by elevator maintenance personnel. It is mainly used to open the elevator landing door during elevator maintenance and emergency situations. In order to prevent non-elevator maintenance staff from opening the elevator landing door at will, the opening knob of the elevator landing door is usually designed as a triangular column and arranged in a circular hole. The shape of the elevator triangular key is a cylinder, and its end face is provided with a triangular blind hole matching with the elevator landing door opening knob. The elevator triangular key must be used by personnel who have received professional training or obtained the elevator operator certificate, and other personnel are not allowed to use it. And it ...

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Problems solved by technology

[0003] In view of this, in order to overcome the problems in the above-mentioned background technology, the purpose of the present invention is to provide a new type of triangular key, which can solve the structural limitations of the human arm, can be continuously rotated within a small rotation angle to realize unlocking, and can solve the problems in the prior art. The problem of unrelated personnel opening the elevator landing door at will

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