| 摘要 |
PROBLEM TO BE SOLVED: To make a seat back frame for vehicles light in weight and to improve the efficiency of assembly. SOLUTION: A seat back 20 is provided with a pair of left and right vertically extended side frames 22, an upper frame 21 disposed between the upper end parts of the side frames 22 and a lower frame 23 disposed between lower end parts. The frames 21-23 are molded separately from each other with resin. The respective frames 21-23 are provided with reinforcing ribs 21d, 22a and 23c for securing required strength. The side frames 22 are exposed without being covered with a facing 30. COPYRIGHT: (C)2004,JPO
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