Vibration damper for use in a disk brake

摘要

Proposed is a vibration damper for suppressing squeaks of a disk brake by positively damping vibrations of the brake. It is a high-performance, highly reliable vibration damper with no accurate machining required. This vibration damper has pressing pistons (9) received in brake pistons (5) so that brake fluid pressure acts thereon. It further includes a vibration detecting means (7) for detecting brake vibrations through one of two pads (3), and a vibration imparting means (8) for vibrating the other pad (3) based on detection signals of the vibration detecting means (7) so as to cancel out the vibrations detected by the vibration detecting means (7). They are pressed against the back of the respective pads (3) by the respective pressing pistons (9). By pressing them at a suitable pressure against the pads (3), it is possible to detect vibrations and vibrate the pads (3) with high reliability. When replacing the pads (3), these means (7,8) never protrude from the pad pressing surfaces, so that they are less likely to be damaged or destroyed.