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1. 发明公开

EP0353900A1 Keyboard switch 失效
标题翻译： Tastaturschalter。
公开(公告)号：EP0353900A1
公开(公告)日：1990-02-07
申请号：EP89307240.5
申请日：1989-07-17
申请人： Acer Peripherals, Inc.
发明人： Wu, Win , Liao, Ben , Lee, Keh-Houng
IPC分类号： H01H13/50 , H01H13/70
CPC分类号： H01H13/50 , H01H13/705 , H01H2215/03 , H01H2221/062 , H01H2233/034 , H01H2237/002
摘要： A keyboard switch for use with a membrane switch array (20) to provide a tactile feeling and, optionally, a click sound comprises a housing (10) which is positioned on the membrane switch array (20). A plunger (13) is reciprocally mounted within the housing (10) and projects outwardly from the housing, the plunger having a cam portion (133). An actuating arm (14) is pivoted to the housing (10) and has a first portion (141) extending beneath the plunger (13) and a second, cam follower portion (142) which engages the cam portion (133) of the plunger (13). The first portion (141) of the actuating arm (14) has a boss (1412) on its surface facing away from the plunger (13) for engaging the switch array (20). A compression spring (15) extends between the plunger (13) and the first portion 141 of the actuating arm (14) to urge the plunger (13) outwardly from the housing (10). A leaf spring (16) is mounted to the housing (10) and has a portion (161) which normally engages the plunger (13) whereby when the plunger is depressed into the housing (10) the boss (1412) on the actuating arm actuates the membrane switch and the plunger flexes the leaf spring to a point at which the spring snaps back to a rest position thereby providing a tactile feeling and, in certain cases, a click sound.
摘要翻译：一种与薄膜开关阵列（20）一起使用以提供触感和任选的咔嗒声的键盘开关包括位于薄膜开关阵列（20）上的壳体（10）。柱塞（13）往复地安装在壳体（10）内并从壳体向外突出，柱塞具有凸轮部分（133）。致动臂（14）枢转到壳体（10）并且具有在柱塞（13）下方延伸的第一部分（141）和与柱塞的凸轮部分（133）接合的第二凸轮从动部分（142）（13）。致动臂（14）的第一部分（141）在其背离柱塞（13）的表面上具有凸台（1412），用于接合开关阵列（20）。压缩弹簧（15）在柱塞（13）和致动臂（14）的第一部分141之间延伸以将柱塞（13）从壳体（10）向外推动。板簧（16）安装到壳体（10）上并且具有通常与柱塞（13）接合的部分（161），由此当柱塞被压入壳体（10）时，致动臂上的凸台（1412）启动膜开关并且柱塞将板簧弹性弯曲到弹簧卡止到静止位置的点，从而提供触觉，并且在某些情况下，产生咔嗒声。

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