Patent ID: 8866033
Filing Date: 2014-10-21
Classification: G06F

Abstract:
1. A key module adapted to be mounted in a housing having a supporting surface, said key module comprising: a touch pad to be disposed above the supporting surface; a circuit board to be mounted between said touch pad and the supporting surface; a press switch coupled electrically to said circuit board, facing the supporting surface, and disposed at a position corresponding to the middle of said touch pad in a lengthwise direction; and a transmission member to be mounted between said circuit board and the supporting surface, and including two levers, and a press member that is disposed between said two levers and that abuts against said press switch, each of said levers having an effort arm, a resistance arm that connects said press member and said effort arm, and a fulcrum that is formed between said effort arm and said resistance arm and that abuts against the supporting surface; wherein when a portion of said touch pad that corresponds to said effort arm of one of said levers of said transmission member is pushed so as to exert a force on said effort arm, said resistance arm of said lever is acted by said fulcrum to shift toward said touch pad and bring said press member to abut against said press switch so as for the press switch to generate a corresponding electrical signal.