| 摘要 |
<p>PURPOSE: To simplify structure by dividing a locking lever by motor drive, previously engaging the levers normally, bringing the levers to the state, in which engagement is disengaged, under an antitheft state and manually opening a door lock by operating a key in the case of motor trouble or the like. CONSTITUTION: A locking lever 2 engaged with a nut 7 moved along a threaded spindle 6 driven by a motor is divided into the first lever 21 and the second lever 22, and normal locking and unlocking are conducted under the state, in which both are engaged. When an antitheft state (a dead lock) is brought, engagement between the first lever 21 and the second lever 22 is separated. The second lever 22 is connected previously to a door lock device by a locking chain. When power supply to the motor is stopped due to trouble or the like, a door can be opened manually by operating a key. Accordingly, the capacity of the motor is reduced while structure and operation can be simplified.</p> |
