| 摘要 |
PROBLEM TO BE SOLVED: To apply resistance to rotational turning of a member constituting a chair such as a seat without using a structure of exhibiting friction resistance by clamping of a screw.SOLUTION: A rotational mechanism of a chair includes: a seat frame 11 as a rotational member; a rotational shaft 4a as a rotational support part for rotationally supporting the seat frame 11; and a resistance member 18 disposed on a peripheral surface of the rotational shaft 4a, interposed between the rotational shaft 4a and the seat frame 11, and applying frictional resistance to the rotational turning of the seat frame 11.SELECTED DRAWING: Figure 9 |
