DESIGN OF SECURITY DOOR AND FRAME Russian patent published in 2008 - IPC E05G1/26 E05D15/58 

FIELD: construction.

SUBSTANCE: design of a security door applies to safes, factory doors and doors of apartment buildings. The unit of a displacement hinge enables the door to swerve for opening and closing as well as to slide in and out of a door groove in the door frame on the closing end of the door. In the safe structure, the hooks on the inside of the door enter the slots in the boards in the safe and couple or uncouple by means of sliding. The doors of apartment buildings and screen doors use a hinge unit whose operation is similar to that in safes. A pair of hinges is attached to the frame and the other pair of hinges is attached to the door. The hinged pairs of the frame and the door are connected by means of a rod or a pipe that ensures the hinge axis of the door pair runs parallel to the hinge axis of the frame pair. The design of a security door has a rotating handle meant for opening and closing of the door. The handle has a link interacting with the rod or the pipe, connecting hinges mounted on the frame. The door locking mechanism is activated by means of a standard pneumatically operated door closer. An abutment applies axial force to make the device activate sliding of the door into the door groove when the door closer aligns the door with the door groove.

EFFECT: improved reliability.

27 cl, 22 dwg