Seat support for especially office chair has pneumatic spring, support arm, valve control rod, swivel link, carrier, lever arms ad control element.

摘要

A lengthwise adjustable pneumatic spring is fixed at one end to a support-frame (2)..A valve-control rod (8) parallel with the pneumatic spring valve-is swivel mounted crosswise to its lengthwise direction. A raising element operates the valve control-rod, and is linked to a support-frame by means of a swivel link (11) running parallel with the lengthwise axis of the pneumatic . A carrier (9) for the valve control rod is laterally spaced apart from the swivel link. At least one lever arm (13,14) has its end away from the swivel link joined to a control element (16,23).