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    Push-to-trip button structure for a molded case circuit breaker
    1.
    发明授权
    Push-to-trip button structure for a molded case circuit breaker 失效
    塑壳断路器的按键结构

    公开(公告)号：US3895205A

    公开(公告)日：1975-07-15

    申请号：US47139974

    申请日：1974-05-20

    Applicant: SQUARE D CO

    Inventor： THARP JAMES A

    IPC: H01H71/12 ,  H01H3/12 ,  H01H3/42

    CPC classification number: H01H71/128

    Abstract: The structure comprises a push button having a cylindrical body portion provided with a head portion at one end and a flattened end portion at the other end and a mounting receptacle formed in a cover of a circuit breaker. An opening through the mounting receptacle has a larger outer portion and a smaller inner portion which define an outwardly facing shoulder. The smaller inner portion has a pair of diametrically opposed slots. A longer one of the slots extends along the entire longitudinal length of the wall of the inner portion, and a shorter one of the slots extends partially along the wall of the inner portion commencing at the innermost end of the receptacle portion. In one turned position, the push button fits slidably within the opening with a laterally extending part of the flattened end portion fitting within the longer slot. When the button is pushed inwardly and rotated 180*, the laterally extending part is aligned with the shorter slot. Upon release of the button, the outer biasing action of a helical spring positioned around the body portion results in the entry of the extending part into the shorter slot thereby securing the button within the opening of the receptacle.

    Abstract translation: 该结构包括按钮，该按钮具有在一端设置有头部的圆筒体部分和另一端的平坦端部，以及形成在断路器的盖中的安装容座。 通过安装座的开口具有较大的外部部分和较小的内部部分，其限定向外的肩部。 较小的内部部分具有一对直径相对的狭槽。 较长的一个狭槽沿着内部部分的壁的整个纵向长度延伸，并且较短的一个槽部沿着从容纳部分的最内端开始的内部部分的壁部分延伸。 在一个转动位置中，按钮可滑动地配合在开口内，扁平端部的横向延伸部分配合在较长的槽内。 当按钮被向内推动并旋转180°时，横向延伸部分与较短的狭槽对齐。 在释放按钮时，围绕主体部分的螺旋弹簧的外部偏置作用导致延伸部分进入较短的狭槽，从而将按钮固定在容器的开口内。

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