Patent ID: 7714246

Claim:
A key button, comprising: a key portion; a supporting portion having a first through hole defined therethrough; a switching portion comprising at least one switching elastic sheet; a pad portion comprising a base body and a protruding portion, the protruding portion formed on the base body, the base body having at least one through aperture defined therethrough, the protruding portion having at least one receiving groove defined through a sidewall thereof, the at least one receiving groove communicating with the through aperture, the at least one switching elastic sheet received in the respective receiving groove and engaging through the at least one through aperture; and a circuit board portion comprising a first contacting point, a contacting sheet, and at least one second contacting point, the pad portion located between the supporting portion and the circuit board portion with the protruding portion configured for engaging through the first through hole of the supporting portion to attach with the key portion; wherein, as the key portion is pressed towards the circuit board portion, the switching portion moves along with the pad portion so as to firstly electronically connect the contacting sheet with the at least one second contacting point via the at least one switching elastic sheet and secondly further electronically connect the first contacting point with the contacting sheet via the pad portion.