Patent ID: 6887001
Filing Date: 2005-05-03
Classification: H01H,H04M

Abstract:
1. A key button switch structure comprising: an input button having a first projection, two electrodes formed on a substrate, and a dome-like switch contact to be pushed down by said first projection of said input button when said input button is depressed, thereby to electrically contact both said two electrodes, wherein said input button further comprises means for preventing inclination of said input button when an action center line of said dome-like switch contact is not coincident with an input pressure center line of said input button and said input button is depressed, wherein said means for preventing inclination comprises a second projection that is spaced from said first projection and that contacts said substrate when said input button is depressed, and wherein said input button has a bottom surface that is sloped continuously from a distal end of said first projection to a base of said second projection.