| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple stretching structure which can prevent an upholstery material from coming out of a support member, can simplify a molding die, and can restrain increase in cost for molding.SOLUTION: A stretching structure of an upholstery material is configured so that an upper frame part 52 includes a body support member 54 and an auxiliary support member 55 externally fitted to the body support member 54, and the upholstery material 51 is held between a rear peripheral wall 54c of the body support member 54 and a rear wall 55B of the auxiliary support member 55, and extended from the rear wall 55B to a front wall 55A on an outer peripheral surface of the auxiliary support member 55 to be stretched on a front of a backrest. |
