Double pole membrane switch having preferred sequence closing feature
    1.
    发明授权
    Double pole membrane switch having preferred sequence closing feature 失效
    双极薄膜开关具有优选的顺序闭合特征

    公开(公告)号:US4409450A

    公开(公告)日:1983-10-11

    申请号:US402876

    申请日:1982-07-29

    申请人: Brian J. Blades

    发明人: Brian J. Blades

    摘要: Membrane switch device comprises first and second parallel insulating supports having opposed first and second surfaces. A first surface central contact and a peripheral contact are provided on the first surface, the peripheral contact extending around and being isolated from the first surface central contact. The first surface central contact and the peripheral contact have commoning extensions which project towards each other and have adjacent free ends. The free ends of the extension define a commoning locus that surrounds the center of the switch site. The second surface has a second surface central contact thereon which is opposed the first surface central contact and a commoning contact which is opposed to and, conforms to, the commoning zone. The shorting contact is electrically isolated from the second surface central contact. Circuit conductors extend to both contacts on the first surface and to the second surface central contact only on the second surface. When the switch is closed, one closing sequence is excluded; the second surface central contact can not be connected to the first surface peripheral contact before it is connected to the first surface central contact.

    摘要翻译: 膜开关装置包括具有相对的第一和第二表面的第一和第二平行绝缘支撑件。 第一表面中心接触件和周边接触件设置在第一表面上,周边接触件延伸并与第一表面中心接触件隔离。 第一表面中心触点和周边触点具有彼此突出并且具有相邻自由端的共用延伸部。 延伸部的自由端限定围绕开关部位中心的公共轨迹。 第二表面在其上具有与第一表面中心触点相对的第二表面中心接触件,以及与共用区域相对并且符合共用区域的公共接触件。 短路触点与第二表面中心触点电隔离。 电路导体延伸到仅在第二表面上的第一表面上的两个触点和第二表面中心触点。 当开关闭合时,排除一个闭合序列; 第二表面中心触点在连接到第一表面中心触点之前不能连接到第一表面周边触点。

    Switch contact structure
    3.
    发明授权
    Switch contact structure 失效
    开关触点结构

    公开(公告)号:US06573467B1

    公开(公告)日:2003-06-03

    申请号:US09763123

    申请日:2001-06-28

    IPC分类号: H01H1370

    摘要: A contact structure of a switch comprises a first contact (1), and one or more doughnut-like second contacts (2) surrounding the first contact (1), and the second contacts (2) are provided with one or more band-like contacts (3a), (3b), (3c), (3d) extending to the opposite side from the first contact (1). With this structure, an area of a metal pattern portion of the second contact (2) becomes smaller as compared with prior art. In a compact electronic device used for a numeric keypad of a mobile telephone or the like, the contact structure can be reduced in size and weight to the utmost and resources can be saved to the utmost.

    摘要翻译: 开关的接触结构包括第一触点(1)和围绕第一触点(1)的一个或多个环形的第二触点(2),并且第二触点(2)设置有一个或多个带状 从第一触点(1)延伸到相反侧的触点(3a),(3b),(3c),(3d)。 利用这种结构,与现有技术相比,第二触点(2)的金属图案部分的面积变小。 在用于移动电话等的数字键盘的紧凑型电子设备中,可以最大限度地减小接触结构的尺寸和重量,并且最大限度地节省资源。