SUPPORT STRUCTURE

WIPO Patent Application WO/2021/199483

A1

The present invention addresses the problem of providing a support structure that effectively prevents burr scattering, and that is easy to manufacture.　As a means for solving the foregoing, a support structure (10) comprises: a body (12) having a press-fitting hole (36); and a collar (34) that is press-fit into the press-fitting hole (36). The support structure is characterized in that: the collar (34) includes a press-fitting part (34a) at an area that is press-fit into the press-fitting hole (36), a flange part (34c) provided to one end side of the press-fitting part (34a), and a distally-tapered tapered part (34b) provided to the other end side of the press-fitting part (34a); the press-fitting hole (36) includes a press-fitted hole (36a) at an area into which the press-fitting part (34a) is press-fit, an intrusion hole (36b) at an area into which the tapered part (34b) intrudes, and a circumferential groove part (36c) provided between the press-fitted hole (36a) and the intrusion hole (36b); and when the axial-direction length of the press-fitting part (34a) is a, the axial-direction length of the press-fitted hole (36a) is b, and the axial-direction length of the circumferential groove part (36c) is c, b