IMPROVEMENTS IN ELECTRICALLY-OPERATED DISC BRAKE ASSEMBLIES FOR VEHICLES

摘要

In an electrically-operated disc brake assembly for a vehicle in which a friction member (10) is adapted to be applied to a rotatable brake disc by a brake-applying means including an electric motor (5) which forms part of the assembly and linear actuator means (15) in the form of a screw device are adapted to apply an axially-directed brake-applying force to the friction member (10) in response to operation of the motor (5), the linear actuator (15) comprises differential screws (16, 19) adapted to translate rotation of the motor (5) into axial movement of the friction member (10) in a brake-applying direction.