FIELD: mechanical engineering. SUBSTANCE: method involves providing door frame, guides, door panel with opening for keyhole and frame, door handle, key and keyhole, and cross- bar, device for allowed displacement; aligning keyhole with opening in door panel; kinematically connecting lock with allowed displacement device and allowed displacing of lock along guides; providing main guide and additional cross-bar with additional guide; locating additional cross-bar in main guide for allowed displacement; providing permanent kinematic engagement between additional guide and cross-bar. EFFECT: increased breaking resistance and enhanced reliability in operation. 5 cl, 2 dwg
