專利讓與公告

A parking assistance system includes front and rear auxiliary wheel assemblies mounted to a chassis of the vehicle and adjacent front and rear wheels of the vehicle. Each of the front and rear auxiliary wheel assemblies includes two auxiliary wheels and an auxiliary motor coupled to the auxiliary wheels for driving the auxiliary wheels to rotate in a forward or backward direction. A plurality of lift devices are mounted between the auxiliary wheels and the chassis and control upward and downward movement of the auxiliary wheels. At least one parking assistance controller is coupled to the auxiliary motors. A control unit is coupled to the at least one parking assistance controller and manually operable to control a rotating direction and speed of the auxiliary motors via the at least one parking assistance controller, controlling a moving distance and direction of the auxiliary wheels in the forward or backward direction.