| 摘要 |
A seat cushion (20) is arranged on a riser (50). A strut (40) is coupled, at lower end, to the rear end of the riser (50), and is provided at the back of the seat cushion (20). The seatback (30) is secured to the strut (40), and is isolated from the seat cushion (20). The seatback (30) and the seat cushion (20) can therefore move, independent of each other. The seatback (30) is composed of a lower half (30L) for supporting the occupant's hips and lower ribs in the main, and an upper half (30U) for supporting the occupant's shoulder blades in the main, the lower half (30L) being narrower than the upper half (30U), and the seat cushion (20) has a U-notch (22a) for loosely holding the narrow lower half (30L) in a middle part of the rear end. |
