DEVICE FOR CONNECTING AND LOCKING DOOR LEAVES POSITIONED ONE BEHIND THE OTHER (VARIANTS) Russian patent published in 2006 - IPC E05C7/02 

FIELD: door locks.

SUBSTANCE: device contains a lock meant for mounting on external door and corresponding part of lock, meant for mounting on internal door. Corresponding part of lock has body connected to supporting plate positioned on door surface of internal door on the side of premises being protected. Inside the body by means of holder a force rod is held, spring-loaded in axial direction and acting as connecting element between the lock and corresponding lock part. Force rod is held its possible mounting in non-working position in plane, parallel to door surface plane. Lock has, mounted serially: face flange, force nut, holding bar and catcher with conic start. Between ends of lock mechanism and force nut facing each other a gap is present. On tail section of lock mechanism and in force nut on the side, directed to lock mechanism, profiled slots are made with guiding longitudinal grooves. Slots form a common plane, inside which a bushing spring-loaded in axial direction is mounted, on external surface of which longitudinal shelves are made. Face flange is connected to holding bar by means of rod-shaped thread elements.

EFFECT: increased reliability and security of lock mechanism.

3 cl, 3 dwg