公开(公告)号：US4249044A

公开(公告)日：1981-02-03

申请号：US32113

申请日：1979-04-23

申请人： Willis A. Larson

发明人： Willis A. Larson

IPC分类号： H01H13/702 ,  H01H13/785 ,  H01H13/70

CPC分类号： H01H13/785 ,  H01H13/702 ,  H01H2201/024 ,  H01H2213/006 ,  H01H2213/01 ,  H01H2213/014 ,  H01H2213/016 ,  H01H2227/018 ,  H01H2227/02 ,  H01H2229/002 ,  H01H2229/028 ,  H01H2239/03

摘要： A membrane switch has a substrate and a plurality of first conductors formed on the substrate. A flexible membrane having a plurality of second conductors formed thereon is positioned relative to the substrate by a spacer which may be adhesively secured to both membrane and substrate. There are openings in the spacer in register with aligned first and second conductors. The membrane is caused to move toward the substrate through an opening to cause contact between the aligned first and second conductors in response to pressure upon the exterior of the membrane. There are vent passage means interconnecting the spacer openings, which vent passage means may be open to the atmosphere.

摘要翻译： 膜开关具有基板和形成在基板上的多个第一导体。 在其上形成有多个第二导体的柔性膜通过间隔件相对于基板定位，间隔件可以粘合地固定到膜和基板。 间隔器中有开口，与对准的第一和第二导体对齐。 使膜通过开口朝向基板移动，以响应于膜外部的压力而引起对准的第一和第二导体之间的接触。 存在将间隔开口互连的排气通道装置，排气通道装置可以对大气开放。

公开(公告)号：US4243852A

公开(公告)日：1981-01-06

申请号：US30470

申请日：1979-04-16

申请人： Willis A. Larson

发明人： Willis A. Larson

IPC分类号： H01H1/02 ,  H01H13/702 ,  H01H13/785 ,  H01H13/70

CPC分类号： H01H13/785 ,  H01H1/02 ,  H01H13/702 ,  H01H2201/024 ,  H01H2201/026 ,  H01H2229/028 ,  H01H2239/03

摘要： A membrane switch has a first silver conductor formed on a flexible membrane and a second silver conductor formed on a substrate, which may also be a flexible membrane. A spacer is positioned between and adhesively secured to the substrate and membrane in such a way that there is an opening in the spacer in register with the first and second conductors. Pressure applied to the membrane moves it toward the substrate through the opening in the spacer to cause electrical contact between the first and second conductors. There are means for impeding migration of the silver between the first and second conductors which essentially consists of orienting the conductors so as to provide the longest possible path between portions thereof.

摘要翻译： 膜开关具有形成在柔性膜上的第一银导体和形成在基底上的第二银导体，其也可以是柔性膜。 间隔件定位在衬底和膜之间并以粘合方式固定到衬底和膜上，使得间隔件中的开口与第一和第二导体对准。 施加到膜的压力通过间隔件中的开口使其朝向衬底移动，以引起第一和第二导体之间的电接触。 存在用于阻止银在第一和第二导体之间迁移的装置，其基本上由定向导体构成，以便在其部分之间提供最长可能的路径。

公开(公告)号：US3947696A

公开(公告)日：1976-03-30

申请号：US520716

申请日：1974-11-04

申请人： Willis A. Larson ,  David E. Colglazier

发明人： Willis A. Larson ,  David E. Colglazier

IPC分类号： H03K17/96 ,  H01H35/00 ,  H03K13/00

CPC分类号： H03K17/962 ,  Y10S200/02 ,  Y10T307/766

摘要： A touch actuated electronic switch is disclosed including a surface, accessible to the touch of a human, interconnected with a differential amplifier. In the preferred embodiment, if increased noise immunity or noise protection is desired, a twisted pair of wires is used and interconnected at one end with one wire electrically connected to the touch surface and the other substantially equal length wire being unconnected. Both wires, at the other end, are connected to the input to the differential amplifier. A common mode alternating voltage signal is then provided to the differential amplifier and a substantial alternating frequency output signal shunt is applied to the differential amplifier, in the preferred embodiment, across terminals conventionally used for D.C. offset null purposes. The output of the differential amplifier is then interconnected to an integrator, in the preferred embodiment a capacitor, and the integrator is in turn connected to an additional amplifier. The output terminals of the additional amplifier, in the preferred embodiment, act as an electrical switch with the electrical impedance across the output terminals in a first state assuming a high impedance, electrical open circuit, or "OFF" switch condition and in the second state assuming a low impedance, electrical short circuit, or "ON" switch condition to thereby approximate the two states of a conventional mechanical electrical switch, the condition assumed by the second amplifier being dependent upon whether or not an operator has touched the touch surface.

摘要翻译： 公开了一种触摸致动的电子开关，其包括与差分放大器互连的人类可触摸的表面。 在优选实施例中，如果希望增加抗噪声或噪声保护，则使用双绞线并且在一端互连一根导线，其电连接到触摸表面，而另一条基本相等的长度导线未连接。 另一端的两根线连接到差分放大器的输入端。 然后将共模交流电压信号提供给差分放大器，并且在优选实施例中，基本上交替频率输出信号分流被施加到差分放大器，跨越常规用于直流偏移无效目的的端子。 差分放大器的输出然后互连到积分器，在优选实施例中是电容器，并且积分器又连接到附加的放大器。 在优选实施例中，附加放大器的输出端子用作电开关，其中假设高阻抗，电开路或“关”开关状态的第一状态下的输出端子上的电阻抗，并且在第二状态 假设低阻抗，电短路或“接通”开关条件，从而接近常规机械电气开关的两种状态，则由第二放大器假定的条件取决于操作者是否触摸了触摸表面。