Electromechanically operated disc brake for cars

摘要

The brake has a spindle of roller screw drive driven by electric motor and operating element is formed by threaded nut An electromechanically operated disc brake for cars has a brake saddle and an operating unit located on the saddle with two friction pads in the saddle, able to slide within limits and each working with one side face of the brake disc. One of the brake pads can be brought into engagement with the brake disc directly by the operating unit through an operating element and the other brake pad by the effect of a reaction force exerted by the brake saddle. The operating unit has an electric motor located coaxially to the operating element and a roller screw drive between it and the operating element with return movement of the threaded rollers. The spindle (16) of the roller screw drive (7) can be driven by the electric motor (6) and the operating element (30) is formed by the threaded nut (11) of the roller screw drive.