Patent ID: 9651106
Date: 2017-05-16
CPC Classifications: B61H,F16D

Claim:
1. A caliper brake apparatus that applies a brake to a vehicle wheel by applying frictional force to a disc that rotates together with the vehicle wheel, comprising: a caliper main body supported by a vehicle body; a brake shoe capable of applying frictional force to the disc by sliding against the disc; a guide plate that supports the brake shoe; an anchor pin that supports the guide plate and is provided in the caliper main body to be free to advance and retreat relative to the caliper main body; a piston provided in the caliper main body to be free to advance and retreat relative to the caliper main body; a piston plate that is fixed to a front surface of the piston and supported by the anchor pin; an elastic membrane that is provided on a back surface of the piston so as to define a pressure chamber in the caliper main body, and that is configured to be deformed elastically by working fluid pressure in the pressure chamber so as to move the brake shoe via the piston, the piston plate, and the guide plate; and an intermediate member sandwiched between the piston plate and the guide plate, wherein the intermediate member is interposed between the piston plate and the guide plate such that a gap is located between the piston plate and the guide plate.