Patent ID: 8684148
Filing Date: 2014-04-01
Classification: F16D

Abstract:
1. A disc brake, comprising: a mounting member formed so as to extend over an outer circumferential side of a disc in an axial direction, for slidably supporting at least a pair of friction pads provided on both surfaces of the disc; a caliper slidably provided to the mounting member for pressing the pair of friction pads against the both surfaces of the disc; and return springs provided between the mounting member and the pair of friction pads, for biasing the pair of friction pads in a return direction in which the pair of friction pads move away from the disc, wherein: each of the return springs comprises: a fixed portion fixed to a corresponding one of the pair of friction pads; an abutting portion to be brought into abutment against a side of the mounting member; an extending portion extending from the fixed portion in a disc axial direction and a direction away from the corresponding one of the pair of friction pads; and a turned-back portion turned back from the extending portion toward the abutting portion; and the turned-back portion comprises one extension portion extending, from a position separated farther away from the fixed portion than the abutting portion in a disc rotating direction, in the disc axial direction and a direction closer to the mounting member so as to be connected to the abutting portion, and wherein the turned-back portion of the return spring comprises at least two bent portions in a direction along disc abutting surfaces of the pair of friction pads; and a bending stiffness of one bent portion of the at least two bent portions, which is located on a side of the pair of friction pads, is set lower than a bending stiffness of another bent portion thereof located on a side of the mounting member.