Adjusting drive for an adjustable part of a piece of furniture

Abstract

The adjusting drive for an adjustable part of a piece of furniture, particularly for adjusting the height and/or the lying surface of a bed such as, e.g., a hospital bed or nursing bed, comprises a housing (12), a gear transmission (20) arranged in the housing (12) and including a rotatable drive element (26) and a driven element (32) adapted to be brought into operative connection with an adjustable part of a piece of furniture, and further comprises a motor (16) having a drive shaft (18) for rotationally driving said drive element (26). The adjusting drive is further provided with a displacement sensor (44) for detecting the position of said driven element (32). The drive element (26) is arranged between two substantially opposite gears (28,40) which are mechanically contacted by the drive element (26). The first gear (28) is coupled to the driven element (32), and the second gear (40) is coupled to said displacement sensor (44).

Dependencies are inferred from the claim text.