| 摘要 |
<p>The mechanism has an electromagnet (2) to control a lock towards a locking position for maintaining closed wings of a door. An unlocking unit unlocks the lock to release and permit the opening of the wings. The lock has locking bars (5a, 5b) integrating a movable core of the electromagnet with interposition of return springs (6a, 6b), where maintenance of the lock in a locked position is assured by an electromagnetic suction cap (3) with a metallic disc (4). The cap has magnetic attraction force greater than antagonist force of the springs of the electromagnet.</p> |
