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    • 84. 发明专利
    • AUTOMATIC DISC BRAKE
    • JPH02146326A
    • 1990-06-05
    • JP27512989
    • 1989-10-24
    • KELSEY HAYES CO
    • ANSONII KOORIN EBANSU
    • F16D65/14F16D65/56
    • PURPOSE: To provide a sufficiently reliable mechanical parking brake integrated with a disc brake by providing an adjusting mechanism, holding a friction pad to a rotor clearance, and automatically performing an adjustment against abrasion in the friction pad. CONSTITUTION: According to a shift of a piston 30 beyond a running clearance between an adjusting nut 35 and a thrust screw 41 toward a rotor 15, a conical part of the nut 35 is separated from a hole 32 because of compression of a wavy washer 37. When separation sufficient for preventing frictional engagement between the nut 35 and the hole 32 due to frictional abrasion of a friction pad assembly 14a is generated, energy accumulated in the washer 37 works through a ball bearing assembly 36 so as to impress outward axial force to the nut 35. The nut 35 is rotationally moved outward until the nut 35 and the hole 32 reach frictional engagement, and an axial orientation of a piston 30 is regulated against abrasion in friction pad assemblies 14a, 14b.