Vibration damping device for disc brake

Details Vibration damping device for disc brake Vibration damping device for disc brake

1996-05-16

1997-08-26

Poon, Peter M.

Brakes

Wheel

Axially movable brake element or housing therefor

188218XL, F16D 6538

Patent

active

056602510

ABSTRACT:
A vibration damping mechanism for use in a disc brake which can effectively suppress squeaks of the disc brake during braking. Vibrations of the rotor are detected by a piezoelectric element pressed against the back of an inner pad. The detection signal is inputted in a control circuit. The control circuit applies a control signal to another piezoelectric element which produces oscillations having a frequency that can reduce the detection signal to zero. The oscillations produced by the piezoelectric element are transmitted to the rotor to cancel the vibrations of the rotor. With this arrangement, signal components other than the rotor vibrations are scarcely contained in the detection signal, so that it is possible to produce oscillations that can cancel vibrations of the rotor with high accuracy. As a result, the rotor vibrations and thus squeaks of the disc brake are effectively suppressed.

REFERENCES:
patent: 5032753 (1991-07-01), Yamaguchi et al.
patent: 5394290 (1995-02-01), Ushiyama et al.

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