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    • 12. 发明授权
    • Keyboard switch assembly with improved hermetically sealed diaphragm contact structure
    • 键盘开关组件与改进的密封式膜片接触结构
    • US3749859A
    • 1973-07-31
    • US3749859D
    • 1972-04-19
    • COLORADO INSTR INC
    • WEBB RWEBB JTYLER T
    • H01H13/48B41J5/12B41J5/16G06F3/02H01H13/12H01H13/70H01H5/04H01H13/52
    • H01H13/7006B41J5/12B41J5/16H01H2207/014
    • A contact key for use in a keyboard arrangement is disclosed wherein one contact extends through a circuit board and a second contact comprises a curved plate or dome spring is positioned on one side of the circuit board and is depressable so that the center thereof can come in contact with the first contact to complete a circuit. In one form of the invention the first contact comrpsies a rivet while in another form it comprises a plated-through hole to the back of the circuit board. The second contact can include a dimple at the center thereof which comes in contact with the first contact when the plate is depressed. A plurality of these first contact members are placed in a circuit board and the second contacts can be supported by a conductive support, such as a shim or plated support having apertures corresponding to the position of the first contacts. If the contact support is in the form of the shim, it can comprise a plurality of sections interconnected by frangible tabs which are broken during assembly to separate the sections, the tabs being bent through holes in the circuit board and crimped against the back side to hold the shim in place and to provide connections for the respective sections to appropriate circuitry. In an embodiment having a plated contact support, the support can be provided with one or more raised bosses to support the contact plate above the first contact.
    • 公开了一种用于键盘装置的接触键,其中一个触点延伸穿过电路板,第二触点包括弯曲板或圆顶弹簧,其位于电路板的一侧上,并且可按压其中心,使其中心能够进入 与第一个联系人联系完成一个电路。 在本发明的一种形式中,第一接触件铆接铆钉,而另一种形式,其包括到电路板背面的电镀通孔。 第二接触件可以包括在其中心处的凹坑,当凹陷时,凹坑与第一接触部接触。 多个这些第一接触构件被放置在电路板中,并且第二接触件可以由诸如具有对应于第一接触件的位置的孔的垫片或电镀支撑件的导电支撑件支撑。 如果接触支撑件是垫片的形式,则它可以包括多个部分,这些部分通过易于折叠的凸片互相连接,这些部分在组装过程中被破坏以分开部分,凸片通过电路板中的孔弯曲并压靠在背面侧 将垫片固定到位,并为相应部分提供连接到适当的电路。 在具有电镀触点支撑件的实施例中,支撑件可以设置有一个或多个凸起凸起,以将接触板支撑在第一接触件上方。