LOCK OF ANTITHEFT DEVICE Russian patent published in 2007 - IPC B60R25/02 E05B65/00 E05B17/20 

FIELD: transport engineering; antitheft systems.

SUBSTANCE: invention relates to devices for interlocking vehicle steering shaft. Proposed lock of antitheft device has split body 1 consisting of two parts 2 and 3 connected by screws and enclosing member to be locked. Heads of screws are flush in part 3 of body 1 and are protected from unscrewing by detachable bar 7 fixed in T-shaped slots of body 1 by means of spring-loaded catch 9 arranged in cavity 12 of bar 7 and mating cavity 14 in body 1. Lock is provided with mechanism 15 to bring catch 9 out of cavity 14 in body 1 with security member and detachable key 19 made in form of rocker 16 with barrel 17 in central part, and cylindrical lock device 18 with cam 20 which engages by one end face 21 with cylindrical lock device 18 and is provided with spiral slot 23 on opposite end face 22. Cavities 14 and 12 for catch 9 in body 1 and in bar 7 have walls square to plane 13 by which bar 7 fits to body 1. Longitudinal stepped hole 24 intersecting with cavity 12 for catch 9 is made in bar 7. Cavity 27 is made on side surface of catch 9. Cylindrical lock device 18 with cam 20 are arranged in first step 25 of longitudinal stepped hole 24 opening to outer end face of bar 7, and rocker 16 in arranged in second step 26 with provision of movable mating of barrel 17 with walls of hole. End 28 of rocker 16 is arranged in cavity 27 on side of catch 9, and other end 29 of rocker 16 is engaged with spiral slot 23 of cam 20. Entry face 31 is made on side 30 of body 1 pointed to bar 7 from side of getting into T0shaped slot.

EFFECT: improved protection against breaking, improved conditions of operation of lock.

17 cl, 8 dwg