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    • 3. 发明授权
    • Plug-in trip unit joint for a molded case circuit breaker
    • 用于塑壳断路器的插入式跳闸单元接头
    • US06274833B1
    • 2001-08-14
    • US09507144
    • 2000-02-18
    • G. Lawrence Moody
    • G. Lawrence Moody
    • H01H2300
    • H01H71/0228H01H1/5833H01H71/08H01H71/12
    • A plug-in trip unit joint 900 for a molded case circuit breaker 10, with the circuit breaker 10 having an operating mechanism 40 with a movable contact arm 45 mounted on a cross-bar 55, a trip bar 618 and a line terminal mounted in a first housing and a trip unit 600 and a load terminal 16 mounted in a second housing. The plug-in trip unit joint 900 comprises a trip unit stab 910 coupled to the trip unit 600 and load terminal 16 and extends from the second housing and a movable contact arm clamp assembly 909 mounted in the first housing and aligned to selectively engage the trip unit stab 910 wherein the line terminal 18 and the load terminal 16 are electrically coupled together and with the trip unit in selective contact with the operating mechanism 40 of the circuit breaker 10. The movable contact arm clamp assembly 909 comprises a pair of connectors 916, 918 with one connector 916 positioned along one side of the movable contact arm 45 and one connector 918 positioned on a corresponding opposite side of the movable contact arm 45. Each connector 916, 918 has a first end 930 and a second end 932 with the first end 930 configured to engage one side of the movable contact arm 45 and the second end 932 configured to engage one side of the trip unit stab 910. A biasing member 920 positioned to engage both connectors between the first and second ends 930, 932 of each connector 916 is installed to urge both connectors 916, 918 against the movable contact arm 45 and the trip unit stab 910 and establishes an electrical and mechanical coupling. The contactors sandwich the contact arm 45 and the trip unit stab 910 between them and is held together with a U-shaped spring. In one embodiment, each end of the connector 916 includes a spherical surface for engagement with the movable contact arm 45 and the trip unit stab 910.
    • 用于模制外壳断路器10的插入式跳闸单元接头900,其中断路器10具有操作机构40,操作机构40具有安装在横杆55上的可动接触臂45,跳闸杆618和安装在 第一壳体和跳闸单元600以及安装在第二壳体中的负载端子16。 插入式跳闸单元接头900包括耦合到跳闸单元600和负载端子16并且从第二壳体延伸的跳闸单元连杆910和安装在第一壳体中的可移动接触臂夹具组件909,并且对准以选择性地接合跳闸 单元插脚910,其中线路端子18和负载端子16电耦合在一起,并且跳闸单元与断路器10的操作机构40选择性接触。可动接触臂夹具组件909包括一对连接器916, 918,其中一个连接器916沿着可移动接触臂45的一侧定位,一个连接器918位于可动接触臂45的对应的相对侧上。每个连接器916,918具有第一端930和第二端932, 端部930被配置为接合可动接触臂45的一侧,并且第二端部932被构造成接合脱扣单元刺头910的一侧。偏置构件920定位成接合 每个连接器916的第一端部930和第二端部932之间的两个连接器被安装成将连接件916,918驱动抵靠可动接触臂45和跳闸单元插头910并建立电气和机械耦合。 接触器将接触臂45和跳闸单元突起910夹在它们之间并且与U形弹簧保持在一起。 在一个实施例中,连接器916的每个端部包括用于与可动接触臂45和跳闸单元刺头910接合的球面。