| 摘要 |
PROBLEM TO BE SOLVED: To promptly support a head of a seated occupant during a rear end collision even when a framework of a seat back is formed by a resin seat back frame having a rear surface panel part.SOLUTION: In a vehicle seat 10, a seat back frame 22 is formed by a resin material and the seat back frame 22 has a rear surface panel part 32. A rear displacement part 34 is formed at a center part of the rear surface panel part 32. The rear displacement part 34 is curved into a spherical surface shape that protrudes to the seat front side. When a load applied to the seat rear side acts on the rear surface panel part 32 during a rear end collision, the rear displacement part 34 is inverted to the seat rear side to displace to the seat rear side. Thus, an upper body of a seated occupant is allowed to move to the seat rear side and the upper body of the seated occupant enters into the seat back 20. Consequently, a head of the seated occupant moves to the headrest side and is promptly supported by a headrest. |
