Backrest unit for seating facilities, in particular for rolling and Standing wheelchairs; Wheelchair and standing wheelchair.

摘要

The backrest unit has a about the pivot axis (11) of the base part (21) pivotable backrest frame (13). In this, the backrest (25) is slidably disposed. The tilting and raising of the back rest frame (13) together with the backrest (25) is a linear motor (33), with which the distance between the base part (21) and the portion (17) of the backrest frame (13) reduced or can be increased. A band (43) extends from a stationary portion (45) of the linear motor (33) via the section (17) to the backrest support. Thus, when the seat back frame (13) pivoted to the rear, so the backrest (25) moves down, of course, also the armrests (29) downwards to be lowered. At the same time, a stabilizer mechanism (51) ensures that the arm rests (29) are maintained substantially horizontal. the arms of the user thus remain in a substantially horizontal position After turning into the reclining position and lowered into a position substantially parallel to his body, so that there is never a risk of down sliding of the arms. A heavily disabled user of the wheelchair thus remains in a position to be able to operate the controller (30).