| 摘要 |
A tamperproof power lock is provided for use in a pickup truck tailgate latch handle. The lock includes a power actuator, a rotating crank, a connecting rod and a lock bolt that locks the tailgate handle. The linear output motion of the actuator is transferred into rotation of the crank that is limited to rotate between two stops. An over center spring or friction keeps the crank or the lock bolt in either of the two stop positions. The rotation of the crank is transferred into linear motion of the locking bolt by the connecting rod. In the locked position the crank is up against one of the stops and the connecting rod past dead center. As a result the locking bolt cannot be pushed back forcibly in an attempt to defeat the lock.
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