AUTOMOBILE REAR-WHEEL DISC BRAKE Russian patent published in 2002 - IPC

FIELD: transport engineering, particularly, automobile brake system, more specifically, rear-wheel brake; applicable in drive of parking brake of automobile rear-wheel brake. SUBSTANCE: automobile rear-wheel disc brake has disc, support, parking brake drive with pushing rod and shaft. Novelty consists in presence of flat surfaces on pushing rod entire width, parallel to rod axis from both sides. Said flat surfaces are mated with upper and lower cylindrical cams. Made on pushing rod, from internal side perpendicular to parallel surfaces is flat which is longer than parallel surface by at least shaft diameter. Each cam with cylindrical surface has convexity towards shaft. It has through lateral recess perpendicular to shaft axis and longitudinal recess is made perpendicular to lateral recess. Lateral recess is designed for receiving pushing rod in region of flat parallel surfaces, and longitudinal recess is blind and designed for engagement simultaneously with upper and lower cams. Centers of surfaces of each cam are displaced relative to axis of pushing rod outside and opposite surfaces of parallel recess located parallel to shaft axis are made at an angle of at least 90 deg relative to each other. EFFECT: simplified design, higher reliability of drive pf parking brake applicable to rear-wheel disc brake. 2 cl, 4 dwg