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    • 3. 发明授权
    • Circuit breaker
    • 断路器
    • US06911614B2
    • 2005-06-28
    • US10691673
    • 2003-10-24
    • Hisanobu AsanoMitsuhiro MitsushigeHideto YamagataYasuhiro Takahashi
    • Hisanobu AsanoMitsuhiro MitsushigeHideto YamagataYasuhiro Takahashi
    • H01H73/02H01H71/10H01H71/50H01H73/24H01H23/00H01H3/00
    • H01H71/501Y10S200/42
    • A circuit breaker includes a fixed contact; a movable contact disposed in a rotary-type contact holder; a switching device; an operation handle; and an over-current tripping device. The operation handle is operated to open and close main-circuit contact points through the switching device. The switching device includes a handle lever connected to the operation handle; a toggle linkage having an upper toggle link and a lower toggle link; a switching spring placed between the handle lever and an arm connecting point of the toggle linkage; and a side plate for holding the components. The circuit breaker further includes a device for preventing the operation handle from moving to an off position when the contact points are stuck together. The device includes first stoppers formed on a cross bar of the contact holder and the handle lever facing the cross bar, and a second stopper formed on the side plate.
    • 断路器包括固定触点; 设置在旋转型接触保持器中的可动触头; 开关装置; 操作手柄 和过流跳闸装置。 操作手柄通过开关装置打开和关闭主电路接触点。 切换装置包括连接到操作手柄的手柄杆; 具有上切换连杆和下肘杆的肘节联动装置; 设置在所述手柄杆和所述肘杆连杆的臂连接点之间的切换弹簧; 以及用于保持部件的侧板。 断路器还包括当接触点被卡在一起时防止操作手柄移动到关闭位置的装置。 该装置包括形成在接触保持器的横杆上的第一止动件和面向横杆的手柄杆,以及形成在侧板上的第二止动件。