Patent ID: 9741502
Date: 2017-08-22
CPC Classifications: H01H

Claim:
1. A mechanical axle structure for a key, comprising a base, a function axle for generating a switch signal and a cover plate, wherein the base, the function axle and the cover plate are connected in order from bottom to top; and the mechanical axle structure further comprises a supporting piece, an upper portion of the supporting piece is fixed with a bottom surface of the cover plate, while a lower portion is fixed with the base, and the function axle passes through the supporting piece to support against the bottom surface of the cover plate, wherein an upper surface of the base is provided with a connecting portion, the function axle comprises a function axle cover sheathed on an outer wall of the connecting portion and movable up and down along the outer wall of the connecting portion, an elastic mechanism is arranged between the function axle cover and the connecting portion; the connecting portion is internally provided with a first spring piece and a second spring piece, which are used for achieving a switch function, wherein the function axle cover moves downward to trigger the first spring piece, so that the first spring piece and the second spring piece contact with each other and close a circuit to generate a switch signal.