Patent ID: 7273134
Filing Date: 2007-09-25
Classification: F16D

Abstract:
1. An actuating unit for an electromechanically actuated disc brake for use with automotive vehicles, which is disposed on a brake caliper wherein two friction linings are disposed in a manner limitedly displaceable, cooperating with respectively one side face of a brake disc, with one of the said friction linings by means of an actuating element, through the actuating unit, being movable into engagement with the brake disc directly, and the other of said friction linings being movable into engagement with the brake disc through the action of a reaction force applied by the brake caliper, wherein the actuating unit comprises an electric motor and a reduction gear operatively disposed between the electric motor and the actuating element, which reduction gear is formed of a threaded drive accommodated by a guide piece axially supported on the brake caliper or a gearbox housing connected to the brake caliper, wherein provided between the guide piece and the brake caliper or the gearbox housing connected to the brake caliper is a sensor device for sensing the reaction force resulting from the actuating force applied by the actuating unit, and wherein the sensor device is axially locked relative to the guide piece and axially locked relative to the brake caliper or the gearbox housing connected to the brake caliper, wherein the sensor device includes at least one radially extending first member configured to engage the guide piece to axially lock the sensor relative thereto and at least one radially extending second member configured to engage the brake caliper or the gearbox housing connected to the brake caliber to axially lock the sensor relative thereto.