| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the assembly work of a chair of which a backrest can be rocked.SOLUTION: A chair comprises: a base part 3a; and a torsion unit 3b that can be attached to and detached from the base part 3a. The torsion unit 3b comprises: a pivot 10 fixed to one of the base part 3a and a backrest 5; a housing fixed to the other of the base part 3a and the backrest 5; and a rubber torsion member inserted between the pivot 10 and the housing.SELECTED DRAWING: Figure 3 |
