| 摘要 |
PROBLEM TO BE SOLVED: To provide comfortableness to sit to a sitting person without largely moving the front side of a seat surface upward when the rear side of the seat surface is inclined backward.SOLUTION: A seat reception rear part 84 is integrally rotatable with a rear link member 30 and a back arm 20. A seat reception body 8 is rotated at the respective rotation centers of the rear link member 30 with the backward inclination motion of the back arm 20. Besides, while a base part 10 and the seat reception body 8 are moved in a mutually separating direction by a front side connection part, the seat reception rear part 84, the rear link member 30, and the back arm 20 are integrally rotated in a state where the relative physical relationship is kept. Then, a seat reception front part 82 is rotated upward and the seat reception rear part 84 is rotated relatively downward with respect to the seat reception front part 82 with a first rear rotation center 32a.SELECTED DRAWING: Figure 2 |
