Patent ID: 9657794
Date: 2017-05-23
CPC Classifications: F16D

Claim:
1. A composite disc rotor comprising: a disc main body, having a ring shape, having a pair of friction surfaces which are opposite each other in an axial direction of the disc main body and to which pads are pushed upon braking, including a plurality of coupling portions at a plurality of circumferential positions of the disc main body, each of the coupling portions being disposed at an inner side in a radial direction of the disc main body and being formed with a coupling through hole; a coupling bracket, having a plurality of notches which are opened in an outer peripheral edge of the coupling bracket and disposed at the plurality of circumferential positions; and a plurality of coupling units, disposed at the plurality of circumferential positions, and each of which includes a bobbin including a head part and a pipe part, a clip and a coupling bolt, wherein the head part includes a torque receiving portion inserted in each of the notches and a projection projected in a circumferential direction of the disc main body from an end of the torque receiving portion in the axial direction, the pipe part is extended from the head part and is fitted in the coupling through hole, each of the bobbins is formed with a through hole penetrating the head part and the pipe part, each of the clips includes a connecting portion which is located between the torque receiving portion and an inner surface of each of the notches and two pressing portions which are extended from the connecting portion in the circumferential direction and located between the head part and the coupling bracket, each of the coupling bolts is inserted into each of the through holes of the bobbins to fix the coupling bracket to the coupling unit, so that a torque applied to the friction surfaces is transmitted to the coupling bracket via the bobbin, each of the pressing portions includes a spring portion that extends from a tip edge of the pressing portion, the spring portion having a tip end direct to the head part of the bobbin, and is provided between the projection and the coupling bracket so as to urge the projection away from the coupling bracket in the axial direction, and the pressing portions are only extended from an edge of the connection portion at a side of the head part in the axial direction such that an edge of the connection portion at a side of the pipe part in the axial direction does not include pressing portions.