Securing device for secondary door lock, locking door to fixed frame

摘要

The device has a locking pin (18) which can be moved in or on the frame (12) in the direction of the door (10). A trap (14) formed in or on the door at least partly accepts the locking pin. There is at least one sensor (21) which forms part of an alarm system. When the sensor is activated it operates an element (23) which moves the locking pin into the trap. The sensor can be a switch indicating movement of the door.