| 摘要 |
A work chair (10) has a seat (15) divided into a forward seat part (15.1) and a rear seat part (15.3) of which the forward seat frame part (17.1) and rear seat and back frame part (17.2) are connected with one another by a hinge joint with a hinge axis (18). The frame parts are supported on a pedestal (11) by seat frame supports (20,21). On the column (13) of the pedestal there is provided a column support part (25) which carries the pivot axis (23) and a swivel support part (28). On the pivot axis (23) seat frame supports (21) are mounted. The swivel support part (28) is tiltable by means of an inclination adjusting device with an actuating handle (6) for tilting the plane (E). The swivel support part (28) has forwardly an elongated bearing opening in which the sliding axis (22) is slidable against the force of an adjustable spring. The sliding axis (22) carries the seat frame support (20). The sliding axis can be secured against sliding by an arresting device having an arresting lever (51) with a swivel bar (52). The spring force can be adjusted by means of an elbow lever. For this purpose a grip (45.4) is provided. By swinging the arresting lever (51) up, a pivoting about the pivot axis (23) can be effected by pressure on the backrest (16) with a lowering of the rear surface of the seat (15), while the forward rounded seat region (15.6) maintains its height. |
