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Novel triangular key and using method thereof

A triangular key and key technology, used in keys, time registers, instruments, etc., can solve the problems of human arm structure limitation and random opening, and achieve the effect of reducing elevator safety accidents, wide range of operating conditions and simple operation.

Pending Publication Date: 2020-03-27
福建省特种设备检验研究院漳州分院
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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

Method used

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] see Figure 1 to Figure 5 As shown, the present invention provides an embodiment: a novel triangular key, comprising a key rod 1, one end of the key rod 1 is provided with a triangular hole 2 matching with the triangular cylinder of the elevator landing door, so that the key rod 1 can be passed through The rotation of the elevator floor door can be opened. The left end of the outer peripheral side wall of the key rod 1 is provided with an external thread (not shown), and the key rod 1 is covered with a casing 3, and the key rod 1 is placed on the casing 3 The inside is free to rotate, so that the rotation between the key shaft 1 and the outer cover 3 does not interfere with each other, the cross section of the key shaft 1 is circular, and the outer peripheral side wall of the key shaft 1 is in a ring array centered on the center of the key shaft 1 A plurality o...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E05B19/02E05B19/06G07C9/25
CPCE05B19/0017E05B19/0082
Inventor 庄智勇郑志坚黄利明
Owner 福建省特种设备检验研究院漳州分院
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