| 摘要 |
PROBLEM TO BE SOLVED: To suppress a rebound of a human body when receiving large shock load in accordance with a collision, etc. SOLUTION: Each of a frame material 20 for a back part and a frame material 10 for a seat part is formed by welding or caulking. A link member 30 for connecting both of the frame materials 20 and 10 is mounted on the frame material 20 for the back part and the frame material 10 for the seat part by welding or caulking. Each of the frame materials 20 and 10 is provided with a cushion material as a tension structure. When receiving more than prescribed shocking vibration and shock power, tension of the cushion material provided as the tension structure is lowered and a high damping characteristic can be exerted. COPYRIGHT: (C)2003,JPO
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