Abstract: An electric wheelchair comprises: a chair assembly and a wheel assembly. The wheel assembly is mounted at the bottom of the chair assembly. The chair assembly includes a seat, a first frame, a second frame, and a third frame, which are pivotally connected to form a four-bar linkage mechanism, so that the seat and the respective frames of the electric wheelchair will be folded synchronously in the same direction when the electric wheelchair is being folded, and the folding direction of the chair assembly is vertical to the axis of the drive wheels of the wheel assembly, thus allowing the disabled user to fold the chair assembly and to disassemble the wheel assembly quickly and effortlessly.

Abstract: A folding electric scooter comprises a chassis. The front end of the chassis is disposed with a front wheel and a handlebar used to control the direction of the front wheel. The handlebar is a folding structure. The rear end of the chassis is pivotally coupled with a rear rack. The rear rack is disposed with a rear wheel, a motor and a battery. The motor and the battery are used to offer the power to the rear wheel. In addition, the rear rack is disposed with a folding four-bar linkage, which forms the seat. By such arrangements, when the folding electric scooter is not in use, the four-bar linkage can be folded to fold the seat, and the handlebar can be synchronously folded, thus minimizing the whole volume to facilitate the transportation and the storage.

Abstract: An auxiliary power unit starting apparatus for a wheelchair comprises a housing, a plurality of triggers fixed in a triggering disc which is installed on an inner surface of the housing, a plurality of return springs biased between the housing and the driving disc for providing an elastic force for enabling the thick portion of the triggers to keep abutting against the deep end of the chutes, a hand wheel fixed to the driving disc, a switch is fixed to the stator for starting and stopping the motor and is to be triggered by the triggering disc. When the user rotates the hand wheel, the triggering disc will trigger the switch, and thus the motor will be started and will produce an auxiliary driving power for rotating the wheel of the wheelchair.