Height-adjustable wheelchair

The invention relates to a wheelchair (100) comprising: a wheel frame (110) and a seat frame (120) connected to the wheel frame (110), the wheel frame (110) being connectible to a set of front wheels (200) and a set of rear wheels (300), the seat frame (120) being configured with a seat plate (125) for allowing a user to sit on it, wherein the position of the wheel frame (110) relative to the seat frame (120) is adjustable in order to make a height (H1) of the seat (125) of the wheelchair (100) adjustable The wheel frame (110) and the seat frame (120) are connected via at least one sliding bracket (150), the sliding bracket (150) comprising a first mounting part (150-1) connected to the wheel frame (110) and a second mounting part (150-2) connected to the seat frame (120), wherein the first mounting part (150-1) and the second mounting part (150-2) are coupled together in operational use, the sliding bracket (150) having a first mode, wherein the first mounting part (150-1) and the second mounting part (150-2) can slide relative to each other in a stepless manner in a longitudinal direction of the bracket (150) to obtain a desired length of the sliding bracket (150), the sliding bracket (150) having a second mode, wherein the first mounting part (150-1) and the second mounting part (150-2) are kept in their relative position. The invention provides for a wheelchair which can be adjusted to the user in a very short time and not requiring any adjustments of the wheels.