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.
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[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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