| 摘要 |
PROBLEM TO BE SOLVED: To provide an insertion hole reinforcement member capable of improving a coupling strength between the insertion hole reinforcement member and a coupled member, the coupled member and an electric connection box.SOLUTION: The insertion hole reinforcement member comprises: a collar 4 which is formed cylindrical and provided in an insertion hole 31 of a bracket body 3 and in which a screw is inserted in an axial direction; and uneven parts 41 which include recessed portions 41a extending in the axial direction in an outer circumference of the collar 4 and projected portions 41b extending in the axial direction in the outer circumference of the collar 4 and in which the recessed portions 41a and the projected portions 41b are alternately formed in a circumferential direction of the collar 4. The uneven parts 41 include a first uneven part 42 that is disposed at one end side in the axial direction and a second uneven part 44 that is disposed at the other end side in the axial direction. In an extension direction of recessed portions 42a of the first uneven part 42, projected portions 44b of the second uneven part 44 extend and in an extension direction of projected portions 42b of the first uneven part 42, recessed portions 44a of the second uneven part 44 extend.SELECTED DRAWING: Figure 2 |
