Patent ID: 9299511
Filing Date: 2016-03-29
CPC Classification: H01H

Claim Text:
1. A key assembly, disposed on a housing of an electronic device and the housing having a first through hole, the key assembly comprising: a circuit board disposed at an inner side of the housing and having a second through hole, a first contact and a second contact; a shaft having a first end and a second end opposite to the first end, the shaft passing through the first through hole and the second through hole, the first end protruding from an outer side of the housing and the second end protruding from the circuit board; a limiting portion located at the second end of the shaft, so that the second end protrudes from the circuit board; a contact element located between the housing and the circuit board, the contact element is disposed on the shaft; and an elastic element coupled between the shaft and the circuit board, wherein the elastic element and the contact element are two separate elements, the elastic element disposed between the contact element and the circuit board, when the shaft drives the contact element to move toward the circuit board for the contact element to contact the second contact, the elastic element stores an elastic potential, and the contact element is electrically connected to the first contact such that the second contact is electrically connected to the first contact through the contact element to generate an electrical signal.