Patent ID: 7407043
Filing Date: 2008-08-05
Classification: F16D

Abstract:
1. A disk brake comprising: a brake caliper having pistons and brake pads for pressing a brake disk, said brake caliper being provided with a pair of caliper side mount portions; and a vehicle body side support portion provided on a vehicle body side for supporting said brake caliper, said vehicle body side support portion being provided with a pair of support portion side mount portions corresponding to said caliper side mount portions, wherein opposed surfaces of said mount portions directly abut each other, fastening bolts are mounted in mount holes formed in said mount portions to fix said brake caliper to said vehicle body side support portion, said fastening bolts being disposed on opposite sides of a line A extending outwardly in a radial direction from a center of the brake disk, each of said mount holes is provided with a counterbore on the opposed surface side thereof, a collar member extending from one to the other of each opposed set of said counterbores is fitted in said opposed set of said counterbores, wherein each of said counterbores formed in said support portion side mount portions is formed with a circular sectional shape, and one of said counterbores formed in said pair of caliper side mount portions is formed in said oblong sectional shape, wherein said counterbore that is formed in an oblong sectional shape is elongate in an arrangement direction of said at least one counterbore and said counterbore paired therewith, the arrangement direction being orthogonal to the direction of the line A extending outwardly in the radial direction from the center of the brake disk.