The aid or wheelchair has a holder rotatably arranged around a vertical axis and exhibiting a linkage (4) pivotable around a horizontal axis. The linkage includes two rotatable rear and front wheels such that the wheels are connected using belt or chain drives. A horizontal pivot axle of the linkage is arranged below one of rotary axles of the wheels in a use position of the aid or wheel chair such that the linkage is upward-pivotably received by the holder. The front wheel has a small diameter than the rear wheel.
