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    • 5. 发明授权
    • Interlock mechanism for explosion-proof fixture having circuit breaker
switch
    • 具有断路器开关的防爆夹具联锁机构
    • US5212624A
    • 1993-05-18
    • US832962
    • 1992-02-07
    • James G. JohnsonNabil L. Mina
    • James G. JohnsonNabil L. Mina
    • H01H9/04H01R13/707
    • H01H9/045H01R13/707
    • An interlock mechanism operably associated with the plug receptacle of an explosion-proof housing whereby a plug may be inserted into or removed from the receptacle only when electrical current is not delivered to the receptacle. The interlock mechanism comprises a safety shaft for engaging a plug inserted into the receptacle, a reciprocating shaft operatively connected to a circuit breaker handle, and a locking pin for securing the safety shaft in a standby position, whereby the circuit breaker handle cannot be moved unless the safety shaft engages the plug casing, the safety shaft cannot be disengaged from the plug casing unless the circuit breaker handle has been moved to an off position, and the safety shaft will not engage the plug casing until it is released by the locking pin after the locking pin is biased to its disengaged position by the inserted plug.
    • 与防爆壳体的插头插座可操作地相关联的互锁机构,由此只有当电流没有被传送到容器时,插头才能插入插座或从容器移除。 互锁机构包括用于接合插入插座的插头的安全轴,可操作地连接到断路器手柄的往复轴和用于将安全轴固定在待机位置的锁定销,由此断路器手柄不能移动,除非 安全轴接合插头壳体,除非断路器手柄已经移动到关闭位置,否则安全轴不能从插头壳体脱离,并且安全轴在锁定销释放之前不会接合插头外壳 锁定销通过插入的插头被偏压到其脱离位置。