| 摘要 |
PROBLEM TO BE SOLVED: To obtain shock absorbing during rear collision due to plastic deformation of a seat cushion side frame or the like at the seat cushion side frame of which the closed cross section surface shape is a basic cross section surface shape without degrading functionality, safety or the like. SOLUTION: An open cross section surface shape area L1 which is formed by a partial notch at a lower part of an inner side member 14-i is regulated and formed at a front side part which leaves the closed cross section surface shape part around a rear support point at least by a prescribed area between front and rear support points 28, 30 of the seat cushion side frame to a floor body side member of the seat cushion side frame 14 of which the closed cross section surface shape is the basic cross section surface shape. Preferably, the notch front shape of the open cross section surface shape area L1 of the seat cushion side frame 14 should be in an inclined shape gradually changing with the size of moment generated by a shock load to the seat back rearward inclination. COPYRIGHT: (C)2006,JPO&NCIPI
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