Patent ID: 7029217
Filing Date: 2006-04-18
Classification: B23P,F16B,F16D

Abstract:
1. A fastening structure comprising: a bolt having a bolt head, a larger outer diameter portion extending in an axial direction of the bolt, and a smaller outer diameter portion extending in the axial direction of the bolt and provided with a thread portion; and a mounting member having a flange portion in which a bolthole is formed and to which a brake disk is fixed by the bolt passing through the bolthole of the flange portion and a hole of the brake disk, an abutting surface of the bolt head abutting on a seat surface of the flange portion of the mounting member, wherein an outer peripheral surface of the larger outer diameter portion of the bolt is provided with an engaging portion engaging with the bolthole of the flange portion, wherein a length of the engaging portion is shorter in an axial direction of the bolt than a thickness of the flange portion, and wherein a center portion in the axial direction of the engaging portion coincides with a center portion in the axial direction of the flange portion.