초록 ▼

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 pedest

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.

대표청구항 ▼

A work chair comprising a base frame adapted to be supported on a floor, a seat divided along a transverse line into a forward seat portion having a rounded forward edge and a rear seat portion, hinge means hingedly joining said forward seat portion and said rear seat portion with one another, with

A work chair comprising a base frame adapted to be supported on a floor, a seat divided along a transverse line into a forward seat portion having a rounded forward edge and a rear seat portion, hinge means hingedly joining said forward seat portion and said rear seat portion with one another, with a hinge axis on said transverse line, a backrest structurally joined with said rear seat portion at a substantially unalterable angle, first support means supporting said rear seat portion and backrest on said base frame for movement from a first forward position to a second rearwardly inclined position of said backrest accompanied by a lowering of said rear seat portion, second support means for supporting said forward seat portion on said base frame for movement from a first approximately horizontal position to a second position in which said forward seat portion is inclined downwardly to the rear while said rounded forward edge of said forward seat portion remains at substantially the same height from the floor, and spring means resiliently opposing movement of said backrest and seat portions from said first positions to said second positions.