| 摘要 |
A trigger mechanism for a power tool, comprises a chassis, a trigger mounted movably to the chassis, and an electrical switch mounted to the chassis and activated by movement of the trigger between ON and OFF positions to close and open an electrical circuit. A locking mechanism attached to the chassis is user-activated to unlock the trigger in the OFF position and trigger-activated to release the trigger in the ON position. The mechanism includes a single, spring-loaded locking pin arranged to lock the trigger in both the ON and the OFF positions.
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