| 摘要 |
The wheel chair has drive unit between the rear wheels with at least one electric motor and at least one drive wheel (9) carried by a rocker arm (11) pivotable relative to the chair frame (3) about two transverse axes (B1,B2), one in front of and one behind the rear wheel axles (DH) and above the drive wheel axle (DA). Each pivot axis can pivot about the other pivot axis and their pivoting motion is limited by stop arrangements. |
