Patent ID: 6047793
Filing Date: 2000-04-11
Classification: F16D

Abstract:
A device for detecting abrasion of a vehicle brake, said device comprising:an outer gear;an inner gear;a plurality of plates engaged in said outer gear;a plurality of discs engaged in said inner gear, said plurality of discs being alternately spaced with respect to said plurality of plates;a piston for bringing said plates and said discs into pressure contact with each other to thereby brake a vehicle;an operation detecting means for detecting that braking has been initiated and for providing a braking initiation signal representative thereof;a stroke sensor for detecting a stroke of said piston at a pressure contact position where said plates and said discs are brought into pressure contact with each other; anda computing unit for, after inputting said braking initiation signal from said operation detecting means, inputting from said stroke sensor a currently detected stroke of the piston at the pressure contact position, and for computing amounts of abrasion of said plates and said discs from a difference between a currently detected stroke of the piston and an initial value, said initial value being a first detected value of the stroke of said piston.