Anzeigevorrichtung für die Stellung eines in bezug auf den Rahmenteil verstellbaren Rückenstützformteils an einer Rückenstütze

摘要

The adjustment device for back supports on backrests of seats and the like has a plate-like shaped part (4) which is fixed in an articulated manner on a spring part (5) and can be adjusted in the direction perpendicular to the backrest plane (1, 3) and in the vertical direction. The spring part (5) is adjustable by means of a threaded bolt (14) and a handle in the transverse direction relative to the backrest (1) and can be displaced in a longitudinal slot (12) of a frame part (3). In this case, an adjusting shaft (19) is provided, which is mounted displaceably with its axis parallel to the plane of the backrest. The adjusting shaft (19) can be coupled via gearing members (18, 17) selectively to the threaded bush (13) or to a toothed rack (25) running vertically on the frame part (3). As a result, the adjustment can be undertaken from the side of the backrest and there are no projecting parts on the back of the backrest.