| 摘要 |
PROBLEM TO BE SOLVED: To improve getting-on/off operability without impairing comfortableness and safety in a seated attitude. SOLUTION: A bucket-shaped side part 12-20 in the getting-on/off side formed separate from a cushion main unit 12-1 of a cushion 12 is formed as a collapsible side part turnable to a brought down position arranging a cushion surface 12c almost horizontally in an upper surface. By swiveling of the cushion main unit 12-1 in the forward tilt direction associated with turning of the collapsible side part 12-20 to the brought down position, a seat surface 12a of the cushion main unit can be set as almost a horizontal surface continued to the cushion surface 12c of the collapsible side part. |
