| 摘要 |
<p>The system for door opener has a locking lever (3), which locks or releases the catch (2). A first safety lever (6) holds the locking lever in the locked position, and with a solenoid (4) is swivelable in a position releasing the locking lever. With a second safety lever (10) which engages at the first safety lever (6), for the protecting of the locking lever against breaking open. The second safety lever is a mechanically uncouplable lever of small mass, located at its centre of gravity, which is adjustable from a position locking the first safety lever, by a magnetic coupling at an armature (5) of the solenoid, in a position releasing the first safety lever.</p> |
