ELECTROMECHANICAL ACTUATING DEVICE FOR A WHEEL BRAKE SYSTEM OF A MOTOR VEHICLE AND A BRAKE SYSTEM EQUIPPED WITH SUCH AN ACTUATING DEVICE

摘要

A new actuating system 1 for a wheel brake system of a motor vehicle is proposed according to the present invention, wherein the braking action is obtained b y means of a rotatable cam element 2 fixed to the motor shaft 8 of an electric motor , with said rotatable element 2 abutting against an actuating member 4, so as to laterally displace said actuating member 4, resulting in the braking pads 5 being pressed against the friction element (brake disk). Moreover, means are provided according to the present invention allowing to obtain adequate recovery of the backlas h arising due to the wear of the brake pads, with these means comprising displaceable slide means adapted to displace the motor-cam group so as to ke ep the brake pads 5 in light contact with the friction element but without exerting any unwanted braking action.