| 摘要 |
PROBLEM TO BE SOLVED: To strongly install an inner member to receive the body to an outer member, and facilitate edge processing of a surface cloth to cover a cushion member. SOLUTION: Freely foldable holding parts 27b are integraly provided with a right and a left side edges of an inner member 27, and the holding parts 27b are folded back to the back side of edge parts of an outer member 26. The holding part 27b is fixed to the outer member 26 by an engagement means comprising an engagement claw and an engagement hole. Since a contact surface of the inner member 27 with the outer member 26 is large, fixing strength is improved. As a circumferential edge of a surface cloth 30 is held between the holding part 27b and the outer member 26, installation of the surface cloth 30 is also facilitated. |
