| 摘要 |
PROBLEM TO BE SOLVED: To adapt to many kinds of springs with strength at a triggered place retained, and to reduce weight. SOLUTION: A seat frame is comprised of right and left frame sides 13, a main frame, a clamp body 19 bent into a U-shape, both ends 20 of the clamp body 19, and a flange 23 for anti-escape. A S-shaped spring or a U-wire clamp 18 to hook an end 25 of a wire on the right and left frame sides 13 of the main frame, a plurality of clamp holes 17, a plurality of U-wire clamps 18, the U-wire clamp, and the round crown 21 from the outside and a pull to hook an end of the pull on a wire hole 22 are equipped.
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