Patent ID: 8348798

Claim:
A hub motor of vehicles comprising: a cylindrical casing adapted to be fixed to a wheel, the wheel includes a rim and at least one connecting member connected to the inside of the rim, the at least one connecting member extending toward the center of the rim; a ring gear fixed in the casing; a coil unit fixed on the casing; a central unit extending along an axis of the casing and having a first fixed axle, the first fixed axle having a first end and a second end, the first end of the first fixed axle adapted to be fixed to the vehicle, a first bearing located between the first fixed axle and the casing, the casing being rotatable relative to the first fixed axle; a second fixed axle having a first end and a second end, the second end of the second fixed axle adapted to be fixed to the vehicle, a second bearing located between the second fixed axle and the casing, the casing rotatable relative to the second fixed axle; a shaft located co-axially with the first and second fixed axes, the shaft having a first end and a second end, a sun gear and a magnet unit mounted to the shaft, a third bearing and a fourth bearing located between the shaft and the casing, the casing rotatable relative to the shaft, the shaft is located co-axially with the first fixed axle and the second fixed axle, the shaft rotatable relative to the first fixed axle and the second fixed axle, and a planet gear frame co-axially and rotatably mounted to the central unit, the planet gear frame rotatable relative to the central unit in one direction only and having a first end surface and a second end surface, the first end surface having multiple planet gears rotatably connected thereto, the planet gears engaged with the ring gear and the sun gear.