INTERLOCK DEVICE FOR SWITCH AND SWITCH FOR CONSTRUCTION

摘要

PROBLEM TO BE SOLVED: To provide an interlock device for a switch which makes electric power for holding an unlock state unnecessary to reduce power consumption as structure for mechanically holding the unlock state.

SOLUTION: The interlock device for the switch comprises: a phase indicator; and an interlock device (U) which locks and unlocks an operation handle (91) of the switch by control of the phase indicator. The interlock device comprises: a lock pin (2); a handle unlock part (3) which makes the lock pin into the unlock state; a latch arm (4) and a lock arm (33) which hold the unlock state; a handle lock restoration part (5) which makes the lock pin (2) into the lock state; and a handle operation time latch release part (6) which releases a latch state by performing an input operation of the operation handle, and after unlocking, a power source for driving the handle unlocking part (3) is blocked, and the unlock state is mechanically held.

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