CALIPER BRAKE APPARATUS

摘要

A caliper brake apparatus includes: a guide plate that supports a brake shoe; an anchor pin that supports the guide plate and is provided in a caliper main body to be free to advance and retreat; a piston provided in the caliper main body to be free to advance and retreat; a piston plate that is fixed to the piston and supported by the anchor pin; an elastic membrane that is provided so as to define a pressure chamber in the caliper main body, and that moves the brake shoe via the piston, the piston plate, and the guide plate; and an intermediate member disposed between the piston plate and the guide plate. The intermediate member is interposed between the piston plate and the guide plate such that a gap is formed between the piston plate and the guide plate.

主权项

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; a piston provided in the caliper main body to be free to advance and retreat; 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 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 disposed 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 formed between the piston plate and the guide plate.