DOOR LOCK Russian patent published in 2008 - IPC E05B47/00 

FIELD: construction, locks.

SUBSTANCE: lock can be used for guarding different objects from access by unauthorised persons. The technical outcome is increased reliability of fixation of the girth rail and increased strength of the lock. The door lock consists of mechanism of fixing the girth rail into a locked position. The girth rail is in the form of a component separated from the case and is in the form of a plate with a figure profile of varying thickness, which on the point of interaction with the girth rail, has a round figure with the diameter of the larger thickness of the rectilinear section of the figure profile, beginning from the end of the girth rail. The mechanism for fixing the girth rail into locked position is in the form of a cylindrical piston, freely fitted on a shaft, one end of which is equipped with threads and is let in with provision for out-in traversing through the cavity of the piston. This cavity has corresponding threads. The pinion is installed with possibility of turning about an axis in line with the longitudinal axis of the shaft and perpendicular to the surface of the girth rail and in gear with the driving pinion gear, fixed to the shaft of the electric motor. The diameter of the cylindrical piston corresponds to the thickness of the rectilinear section of the figure profile. The piston is installed with provision for displacement in line with the indexing holes of the case of the lock and is fixed on the smooth end of the shaft from longitudinal displacement.

EFFECT: improved door lock, providing for protection from breaking in.

6 cl, 7 dwg