CPC A47C 7/004 (2013.01) [A47C 3/025 (2013.01); A47C 7/006 (2013.01); A47C 9/002 (2013.01)] | 11 Claims |
1. A star-shaped base for a chair device, comprising a center seat and a plurality of extending arms mounted on the center seat, the extending arms being used to place the star-shaped base on a ground, wherein: at least one of the extending arms is hinged to the center seat and rotates relative to the center seat,
wherein: rotation of one or all of the extending arms is locked by a locking element; and
the locking element is an annular locking element mounted on the center seat, rotation of all of the extending arms are simultaneously locked; when the locking element rotates around a longitudinal axis direction of a chair column relative to the center seat to a locked position, a braking element on the locking element is embedded between the center seat and the extending arms, thereby blocking the rotation of the extending arms relative to the center seat.
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