Locking system for door in building, with main lock moving remote catches via drive rods, has spring-loaded sensor arm contacting fixed door frame and allowing movement of catch when pushed back

摘要

An electric motor (12) may move a drive rod (4), controlled by a main lock with a handle (11). It may move a spring- loaded (8) claw (7) pivoted (10) inside a lock (1) housing (9). A spring-loaded (18) pivoted (26) L- shaped sensor arm (19) may be pushed back into the lock housing by contact with the fixed door frame (3,5). The sensor arm has a window which admits a curved rod (30) projecting from the claw when the sensor arm is pushed back into the lock housing.