| 摘要 |
Tilting seat chair, comprising: a base structure (16) bearing a transverse tilting axis (24), a seat support structure (14), tiltably mounted about the transverse tilting axis (24), an elastic arrangement for opposing the seat tilting motion, and an adjustment device (42) for varying the force opposing the elastic arrangement. The aforesaid elastic arrangement comprises a torsion bar (32) connecting the seat support structure (14) to the base structure (16) in a tilting manner about the transverse tilting axis (24). The torsion bar (32) has at least a first portion (32a) rotatably connected to the seat support structure (14) and at least a second portion (32b) connected to the base structure (16) through the aforesaid adjustment device.
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