Vibration damper for a hydraulic brake system of a vehicle

Abstract

The invention relates to a vibration damper for a hydraulic vehicle brake system with a diaphragm facing the hydraulic fluid that transmits the braking force and being fastened to a carrier device by its edge in such manner that it is able to move toward the carrier device or away from it at least slightly in its center area. Based on the invention, the hollow chamber between the diaphragm and the carrier device, which is required for the movement of the diaphragm, has been largely evacuated. The stiffness of the diaphragm is preferably selected in such a manner that the diaphragm rests completely against the surface of the carrier device facing toward it at a pressure of the hydraulic fluid in the range of 25 bar and more. In some areas, the diaphragm can have a wave-shape cross-sectional design as can the surface of the carrier device facing toward the diaphragm. In a preferred version, the carrier device is a brake piston that is incorporated in the caliper of a vehicle brake, against whose side that faces away from the hydraulic fluid a brake lining carrier rests.

Dependencies are inferred from the claim text.