| 摘要 |
PROBLEM TO BE SOLVED: To make a frame secure in strength, reduced in the number of parts, light in weight and easy to assemble. SOLUTION: A seat is provided with a seat skeleton frame 1 formed by connect-fixing the front and rear sides of a pair of left and right side frames 5 with a rear frame 6 and a front frame 20. Then, the frame 20 is formed in a U-shape opening a rear side of a plane view by a horizontal rod 21 formed of a pipe member of a right/left direction, vertical plate parts 23 obtained by bending both ends of the rod 21 backward and collapsing these bent parts from right and left sides and bending plate parts 22 forming a U-shaped cross section by upper/lower end parts 24 obtained by bending the upper/lower ends of the parts 23 inward and the parts 22 are fixed to the frames 5.
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