CALIPER BRAKE DEVICE FOR VEHICLE

摘要

A brake caliper (10) includes a pair of caliper arms (12) that oppose frictional surfaces (6) formed on respective side faces of a vehicle wheel (5). The caliper arm (12) applies a brake to the vehicle wheel (5) by pressing a brake pad (7) against the frictional surface (6). A pressure chamber (63) delimited by a diaphragm (75) is formed in the caliper arm (12). A plurality of pistons (55) which drive the brake pad (7) in accordance with expansion of the diaphragm (75) corresponding to a supply of compressed air to the pressure chamber (63), and a guide member (65) that guides displacement of the plurality of pistons (55) in a right-angle direction relative to the frictional surface (6) are provided, and therefore the movable brake pad (7) applies an even braking force to the vehicle wheel (5).