公开(公告)号：US3699294A

公开(公告)日：1972-10-17

申请号：US3699294D

申请日：1971-05-18

Applicant: FLEX KEY CORP

Inventor： SUDDUTH WILLIAM B

IPC: H01H1/029 ,  H01H13/702 ,  H01H13/703 ,  H01H13/785 ,  H01H1/20 ,  H01H1/04

CPC classification number: H01H13/785 ,  H01H1/029 ,  H01H13/702 ,  H01H13/703 ,  H01H2201/016 ,  H01H2201/032 ,  H01H2209/014 ,  H01H2209/03 ,  H01H2209/052 ,  H01H2209/074 ,  H01H2209/078 ,  H01H2215/002 ,  H01H2217/006 ,  H01H2217/012 ,  H01H2217/016 ,  H01H2223/002 ,  H01H2223/036 ,  H01H2223/052 ,  H01H2225/018 ,  H01H2227/002 ,  H01H2227/012 ,  H01H2229/022 ,  H01H2229/028 ,  H01H2231/002 ,  H01H2231/038 ,  H01H2231/05 ,  H01H2239/026

Abstract: Electric switches are described in which a resilient, electrically conductive, elastomeric member is spaced adjacent but apart from contact means; among features are the elastomeric connector: of sheet form; on metal contacts as a movable contact bridge; defining a simple and durable multiple switch array including a keyboard, a digital coding assembly and a detector; and as the means, especially with proper selection of distributed conductive particles in the elastomer for limited conductivity, of eliminating the electrical effects of bounce in solid state electronic logic circuitry and the like. Fabrication of the switch as a simple, thin compact laminate using printed circuit boards is shown using the preferred silicone elastomer and carbon filler. In preferred embodiments pressure against conductive elastomer sheet means will cause it to connect to a contact element conductively and release of pressure will cause the sheet means to disconnect. The sheet means can be used as a floating connection for one or more circuit elements, and in this form has particular application in a keyboard assembly, particularly in connection with replaceable printed circuit boards and in digital coding techniques with a single printed circuit board. Preferably, the sheet means resiliently, reversibly deforms from first to second conditions, typically engaging the contacts in the deformed or bulged condition. Preferably in one condition the sheet means takes a planar form, positioned by a spacer layer from the contacts. And preferably the contacts are elements of a printed circuit.

Abstract translation: 描述了电开关，其中弹性的，导电的弹性构件与接触装置相隔离; 其特征是弹性连接器：片材形式; 金属触点作为可动触点桥; 定义包括键盘，数字编码组件和检测器的简单耐用的多重开关阵列; 并且作为手段，特别是在弹性体中用于有限导电性的适当选择分布的导电颗粒，以消除固态电子逻辑电路等中的反弹的电效应。 使用优选的有机硅弹性体和碳填料示出了使用印刷电路板将开关制造为简单的薄型紧凑型层叠体。 在优选实施例中，针对导电弹性体片材装置的压力将导致其导电地连接到接触元件并释放压力将导致片材装置断开。 片材装置可以用作一个或多个电路元件的浮动连接，并且在这种形式中，特别适用于键盘组件，特别是与可更换的印刷电路板和具有单个印刷电路板的数字编码技术相结合。 优选地，片材装置弹性地可逆地从第一状态变为第二状态，通常在变形或凸起状态下接合触点。 优选地，在一个条件下，片材装置采取平面形式，通过间隔层从接触件定位。 并且优选地，触点是印刷电路的元件。