| 摘要 |
<p>There is described a lock mechanism for fixing to one of a moveable member or frame for locking the moveable member in a closed position in the frame. The lock mechanism comprises a bolt member moveable between a disengaged position and an engaged position for engagement with the frame or moveable member. Drive means are also included for driving the bolt member between the disengaged and engaged positions. First electrical means moveable between a first position and a second position are included and are permanently coupled to the drive means by a linkage for actuating the drive means to drive the bolt member from the engaged position to the disengaged position. The lock mechanism also includes second means for actuating the drive means independently of the first electrical means, the linkage coupling the first electrical means to the drive means in such a way as to permit the drive means to drive the bolt member from the engaged position to the disengaged position in response to the actuation of the second means irrespective of the position of the first electrical means. <IMAGE></p> |
