Patent ID: 8002088
Filing Date: 2011-08-23
Classification: F16D

Abstract:
1. A self-boosting electromechanical friction brake for a motor vehicle, said friction brake comprising: a first friction brake lining, an electromechanical actuator with which the friction brake lining can be pressed for braking against a brake body, a second friction brake lining which is pressed against the brake body by a reaction force that is caused by the pressing of the one friction brake lining against the brake body, and a self-boosting device, which converts a frictional force, exerted upon braking by the rotating brake body on one of the friction brake linings pressed against it, into a contact pressure which presses the friction brake lining against the brake body, wherein the self-boosting device includes a wedge supported on a counterpart wedge face, wherein the first friction brake lining is supported on said wedge, wherein said first friction brake lining is movable in a circumferential direction and transverse to the brake body, wherein the friction brake lining that can be pressed against the brake body by the self-boosting device has less fluctuation in the coefficient of friction with the brake body than the other friction brake linings, and wherein the friction brake further comprises a brake disk of the brake body having a first friction face cooperating with the friction brake lining that can be pressed against the brake body by the self-boosting device, which first friction face has a different coefficient of friction from friction faces that cooperate with the other friction brake lining or friction brake linings.