| 摘要 |
PURPOSE:To form a bent part having high internal tearing resistance by shaving off a part close to the end part of a solid part in the width direction as compared to a part close to the center part and preventing solids from being abutted on each other at the part close to the end part when the solids are bent at the bent part. CONSTITUTION:A hinge part 22a is constituted of a film-like bend part 22a1, a pair of solid parts 22a2, 22a3 coupled through the film-like bent parts 22a1, 22a and solid parts 22a4, 22a5. The solid parts 22a2, 22a3 are located on the center part and arranged in parallel with each other, but the solid parts 22a4, 22a5 are formed close to the end part of the width direction and inclinded by an angle from the solid parts 22a2, 22a3. Namely, the inclined parts are shaved off. If a force in the A arrow direction is applied under the standing state of an original press contacting plate, a tensile force is applied to the bent part 22a1 arranged close to the center part corresponding to the solid parts 22a2, 22a3, but the tensile force is not applied to the bent part 22a1 close to the end part. Namely, the solid 22a4 is not abutted on the solid part 22a5 and moment around a point (c) is not affected. Consequently, an internal tearing force is not applied to the end part 22a1-1 of the bent part 22a1. |
