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    • 5. 发明公开
    • Pressure activated switching device
    • 压力启动开关装置
    • EP0921544A2
    • 1999-06-09
    • EP98123477.6
    • 1996-04-23
    • Burgess, Lester E.
    • Burgess, Lester E.
    • H01H3/14
    • H01H3/142E05F15/44H01H1/029H01H3/141H01H2003/147H01H2003/148Y10S428/901Y10T428/24917Y10T428/249958Y10T428/31703Y10T428/31707
    • A pressure actuated switching apparatus comprises an elastomeric first conductive layer (17b), a second conductive layer (12), a layer of electrically conductive compressible piezoresistive material (14) and at least one electrically insulative spacer element (13). Said layer of electrically conductive compressible piezoresistive material (14) has first and second surfaces, the first surface being in electrically contacting relationship with the elastomeric first conductive layer (17b). The piezoresistive Material (14) has an electrical resistance which varies in response to the amount of force applied thereto. The at least one electrically insulative spacer element (13) has a thickness of from about 1/32 inch to about 1/4 inch. It is positioned between the second surface of the compressible piezoresistive material (14) and the second conductive layer (12). The spacer element (13) possesses a plurality of openings (13a), each opening (13a) having a diameter of from about 1/16 inch to about 1/2 inch. In response to a force applied thereto the compressible piezoresistive material (14) disposes itself through at least some of the openings (13a) of the spacer element (13) to make electrical contact with the second conductive layer (12).
    • 压力致动开关装置包括弹性体第一导电层(17b),第二导电层(12),导电可压缩压阻材料层(14)和至少一个电绝缘隔离元件(13)。 所述导电可压缩压阻材料层(14)具有第一和第二表面,第一表面与弹性体第一导电层(17b)处于电接触关系。 压阻材料(14)具有响应于施加到其上的力的量而变化的电阻。 该至少一个电绝缘隔离元件(13)具有从约1/32英寸至约1/4英寸的厚度。 它位于可压缩的压阻材料(14)的第二表面和第二导电层(12)之间。 间隔元件(13)具有多个开口(13a),每个开口(13a)的直径为约1/16英寸至约1/2英寸。 响应于施加到其上的力,可压缩压阻材料(14)将其自身穿过间隔元件(13)的至少一些开口(13a)布置成与第二导电层(12)电接触。