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    Explosion proof toggle switch
    1.
    发明授权
    Explosion proof toggle switch 失效
    防爆拨动开关

    公开(公告)号：US6040543A

    公开(公告)日：2000-03-21

    申请号：US373948

    申请日：1999-08-13

    申请人： Nabil L. Mina ,  Santosh Vilanilam ,  Garrett S. Yarbrough

    发明人： Nabil L. Mina ,  Santosh Vilanilam ,  Garrett S. Yarbrough

    IPC分类号： H01H9/04 ,  H01H23/16 ,  H01H21/80

    CPC分类号： H01H23/162 ,  H01H9/042

    摘要： A toggle switch includes a main housing that contains an electrical contact assembly operated by a cam member which opens and closes the contacts through movement of a leaf spring. The switch further includes a modular assembly of a housing cover to which a manually operable pivotable handle is mounted and is connected to a rotatable bushing supported shaft. The shaft operates a gear set attached to the cam member. The contacts provide an electrical connection to terminals that are insert molded into the housing. The terminals are configured to be provided with wire connecting screws accessible from the rear of the housing. The switch is thus explosion proof in construction and the rear mounted terminal screws avoid the possibility of shorting the live terminals to an associated metal electrical box. The switch is also readily constructed by known manufacturing methods and is capable of being directly installed in a standard electrical box thus avoiding the need for a separate explosion proof enclosure.

    摘要翻译： 拨动开关包括主壳体，其包含由凸轮构件操作的电接触组件，该凸轮构件通过板簧的移动来打开和关闭触点。 开关还包括壳体盖的模块化组件，手动操作的可枢转手柄安装在壳体盖上并连接到可旋转衬套支撑轴上。 轴操作附接到凸轮构件的齿轮组。 触点提供与嵌入模制到壳体中的端子的电连接。 端子被配置成具有可从壳体的后部接近的导线连接螺钉。 该开关因此在结构上是防爆的，并且后部安装的端子螺丝避免了将带电端子短路到相关联的金属电箱的可能性。 该开关也可以通过已知的制造方法容易地构造，并且能够直接安装在标准电气箱中，从而避免需要单独的防爆外壳。