Swing fire doors have door closers with sliding blocks at the closer arms on a horizontal guide at the door frame and a lock for the passage door block in the closed position only released when the standing door is at a given angle

摘要

The mechanism to control the movements of swing doors in the correct sequence, using a standing door (1) and a passage door (2), each door is fitted with a door closer (11,21) to move their doors into the closed position and in the required order. The swing arms (12,22) of each door closer (11,21) have a sliding block at the ends towards the door frame (8), in a horizontal guide (3). The position of the sliding block for the passage door (2) is set by a barrier in the closed position. A rod is through the sliding block for the passage door to operate the barrier, with an out-of-round and especially a quadrilateral shape. A drive is between the sliding block for the standing door and the rod, where they are only coupled together when the standing door (1) is at a given angle.