| 摘要 |
<p>PURPOSE:To improve the operability with simplified structure by a method wherein a cam part having a sloped surface is provided to a superlock member, and engagement of a projecting part and a recessed part is disengaged by moving the superlock member while it is made to abut on a claw of a key lock lever. CONSTITUTION:The device is put in locking state by operation of an operating link which is actuated by turning a lock lever counterclockwise with a key inserted into a key cylinder and turned in the direction of locking. Upon the locking, a key lock lever 28 is turned, and a motor is electrified with a control switch turned on, and a superlock member 55 is displaced in the direction contrary to (b), and thereby a projecting part 34 is engaged with a recessed part 59. Then, the door becomes unable to be opened even in the case where a first open lever is turned clockwise by operation of a handle. In unlocking of the superlock, the key is turned in the direction for unlocking and the key lock lever 28 is moved toward (c), making a claw 60 abut on a sloped surface 65 of a cam 64. Then, the key lock lever is turned further in the direction (b), and thereby the projecting part 34 and the recessed part 59 are disengaged from each other, making the lock lever placed in unlocking position. Thereby, a manually-operable unlocking mechanism can be obtained easily.</p> |
