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1. 发明授权

US4636593A Light conducting, elastomeric membrane keypad 失效
标题翻译：导光，弹性膜键盘
公开(公告)号：US4636593A
公开(公告)日：1987-01-13
申请号：US854730
申请日：1986-04-17
申请人： Carl V. Novak , Ronald R. Browne
发明人： Carl V. Novak , Ronald R. Browne
IPC分类号： H01H13/702 , H01H3/12
CPC分类号： H01H13/702 , H01H2209/01 , H01H2215/008 , H01H2217/028 , H01H2219/014 , H01H2219/034 , H01H2219/04 , H01H2219/044 , H01H2219/06 , H01H2221/002 , H01H2221/07 , H01H2223/002 , H01H2223/034 , H01H2231/022
摘要： A keypad assembly is described that includes a novel elastomeric membrane keypad (120) sandwiched between a housing (110) and a circuit board 130. Keypad (120) is comprised of a sheet (122) and a plurality of keys (124) protruding therefrom. Keys (124) have carbon pads (220) on the bottom for producing electrical signal continuity between corresponding pairs of contacts on circuit board (130). Then sheet (122) further includes ridges (310) at the periphery of its top surface and surrounding each key (124). When keypad (120) is compressed between housing (110) and circuit board (130), ridges (310) produce a high compression seal around each key (124), thereby improving the tactile response thereof. Sheet (122) of keypad (120) also includes cavities (210) for light sources (410) on circuit board (130). The light from light sources (410) is conducted by sheet (122) throughout keypad (120) for brightly and evenly illuminating keys (124 ). The novel elastomeric membrane keypad (120) may be advantageously used in any application requiring a keyboard assembly.
摘要翻译：描述了一种键盘组件，其包括夹在壳体（110）和电路板130之间的新型弹性膜键盘（120）。键盘（120）包括片（122）和从其突出的多个键（124）。键（124）在底部具有碳垫（220），用于在电路板（130）上的相应的触点对之间产生电信号连续性。然后，片（122）还包括在其顶表面的周边处并围绕每个键（124）的脊（310）。当键盘（120）在壳体（110）和电路板（130）之间被压缩时，脊（310）围绕每个键（124）产生高压缩密封，从而改善其触觉响应。键盘（120）的板（122）还包括用于电路板（130）上的光源（410）的空腔（210）。来自光源（410）的光在整个键盘（120）中由片材（122）传导，用于明亮均匀地照亮键（124）。新颖的弹性膜键盘（120）可有利地用于需要键盘组件的任何应用中。

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