Attachment structure of flat wire harness

An attachment structure of a flat wire harness, comprising:

• an attachment target member;
• the flat wire harness disposed along an outer surface of the attachment target member;
• and
• an attachment part attaching the flat wire harness to the attachment target member, wherein
• the flat wire harness includes a plurality of wire-like transmission members and a base material holding the plurality of wire-like transmission members in a flatly-arranged state,
• a through hole is formed in a part of the base material where the plurality of wire-like transmission members are not disposed,
• the attachment part includes a rod-like part passing through the through hole, a fixing part provided to a first end portion of the rod-like part to fix the rod-like part to the attachment target member, and a retaining part provided to a second end portion of the rod-like part to prevent the rod-like part from coming out of the through hole,
• an outer size of the retaining part is larger than a dimension of the through hole, and the dimension of the through hole is equal to or larger than a thickness of the rod-like part,
• the fixing part integrally fixes the attachment target member and the rod-like part,
• the rod-like part is a stud bolt,
• the retaining part is a fastening member fastened to the stud bolt,
• an outer size of the fastening member is larger than the dimension of the through hole,
• a locking concave part is formed in an outer peripheral part of the stud bolt,
• the fastening member includes a cap body covering the stud bolt, a flange extending to an outer side from an outer peripheral part of the cap body, and an elastic locking piece formed in an inner peripheral part of the cap body to be locked to a peripheral edge of the locking concave part of the stud bolt, and
• an outer size of the flange is larger than the dimension of the through hole.