DOOR LOCK Russian patent published in 2012 - IPC E05B47/00 

FIELD: construction, road engineering.

SUBSTANCE: door lock comprises a lock body equipped with a front plate and a locking facility. The lock body comprises a drive and a tab made as capable of reciprocal rectilinear displacement from the open position and the locked position, protruding from the lock body via the tab hole on the front plate. The tab comprises a body part and is spring-loaded relative to the protruding position. The locking facility is arranged as capable of movement into the locking position, in which they prevent displacement of the tab from the protruding position to the open position in the lock body. The locking facility comprises a wedge arranged between the second part of the tab and the lock body. The wedge is made as capable of displacement perpendicularly to the rectilinear trajectory of the tab. A lever comprises a point of support, a support surface and a locking surface. The lever is hingedly supported on the lock body in the point of support. The locking surface is made as capable of interaction with the wedge. The support surface and the locking surface are made as capable of rotation relative to the point of support between the position of the lever rotation to outside in direction to the front plate and the position of rotation to inside towards the rear edge of the lock body. The locking surface is arranged further from the point of support compared to the support surface. The lever is spring-loaded towards the position of rotation to outside. The locking part is made as capable of displacement to the locking surface in order to fix the lever and the wedge in the locked position. In this locked position the lever is located in the position of rotation to outside, the support surface is arranged next to the wedge, and the wedge is pressed between the tab body and the lock body. The wedge comprises the first and second truncated surfaces perpendicular to the rectilinear trajectory of the tab. The angle between truncated surfaces reaches the support surface of the lever. The tab body comprises the first opposite surface for the first truncated surface, and the lock body comprises the second opposite surface for the second truncated surface. The wedge is arranged so that in a certain position between the position of rotation to outside and position of rotation to inside of the lever, it is located at the distance from the rectilinear trajectory of the tab, making it possible for the tab to move into a certain position without interference from the side of the first opposite surface.

EFFECT: invention provides for reduction of power intake for lock control and also makes it possible to use a low-capacity drive.

19 cl, 14 dwg