Chair height and tilt adjustment mechanisms.

摘要

The invention relates to a chair control for adjusting height and tilt of a chair (10) having a base (12) and a column (26) supported by the base, said chair control comprising height adjustment means (28), tilt adjustment means (158) and a housing (34) adapted to mount on the column and support a chair seat (166), said height adjustment means being mounted to and between the base and the housing for longitudinal adjustment to alter relative height of the seat, the chair control further having height actuating means (112) movably mounted to the housing for actuating longitudinal adjustment of the height adjustment means, said tilt adjustment means having chair back support means (160) pivotally mounted on said housing for movement between upright and reclining positions, means (170) for biasing the chair back support means in the upright position, tension control means (172) movably engageable with the biasing means for adjusting tension thereof and tilt actuating means (216) movably mounted to the housing for actuating movement of the tension control means. The height actuating means and the tilt actuating means comprise a pair of discrete members extending coaxially and codirectionally outwardly from the housing.