This invention is mainly to provide a power wheel structure of a wheelchair, comprising a chair frame two power wheels respectively connected to two sides of the chair frame, wherein each power wheel is provided with a rim, a spoke set, and a hand-held ring disposed to the outside of the rim, and the spoke set is disposed to the inner periphery of the rim and composed of two cover bodies, a hub at center, and a plurality of spokes to the outer periphery of the hub a driving mechanism having two driving motors respectively installed to the hubs of the two power wheels, wherein the driving motor is disposed with a driving shaft and pivotally connected with the wheel frame and a power supply unit disposed with a battery set in the spoke set and electrically connected with the driving motor. With the aforementioned members, the driving mechanism is disposed in the hub of the power wheel, capable of saving considerable weight and space, so as to facilitate the wheelchair to be folded and stored, which is excellent in innovation and handy practicability.本發明主要係提供一種輪椅動力輪結構,其包含有:一椅架;二動力輪,分別接設於椅架二側,各該動力輪設有一輪圈、一輪輻組及一手扶圈,該手扶圈設於輪圈外側,該輪輻組係設於輪圈內周,其係由二蓋體組成,其中央設有一輪鼓,於輪鼓外周設有複數輻條;一驅動機構,具有分別安裝於二動力輪輪鼓內之二驅動馬達,該驅動馬達設有一驅動軸且與椅架樞接;一供電單元,於輪輻組內設有與驅動馬達電性連結之一電池組;藉由上述構件,該驅動機構係設於動力輪輪鼓內,可省去相當之重量及空間,便利輪椅收合及收納,確具極佳創新及便利實用性者。23‧‧‧輪輻組24‧‧‧輪輻蓋25‧‧‧輪鼓26‧‧‧輻條261‧‧‧容置槽30‧‧‧驅動機構31‧‧‧驅動馬達32‧‧‧驅動軸40‧‧‧供電單元41‧‧‧電池組51‧‧‧感測元件511‧‧‧感測端
