Lock for building main door with frame and door leaf - has locking element actuated by force or pressure accumulator for bolt position change

摘要

The door with a frame (1) and a door leaf (2) has a lock (4) with at least one catch (8) and coacting bolt (7), movable between the leaf releasing and closing position. The lock has a closure element (12) actuated by a force or pressure accumulator. The closure element moves the bolt from the first into the second position. A pump is used for charging the accumulator. Another mechanism actuates the bolt engagement behind the catch, when the door leaf is moved from the open to the closed position. USE/ADVANTAGE - Automatic locking of door leaf closure.