A drive system for a vehicle having a maximum speed, the drive system comprising: a first electric drive motor configured to drive both a first wheel and a second wheel of the vehicle; a differential coupled to the first electric drive motor, the differential being configured to split drive provided by the first electric drive motor so as to form a first drive path from the differential to the first wheel and a second drive path from the differential to the second wheel; a second electric drive motor positioned along the first drive path and configured to drive the first wheel; and a third electric drive motor positioned along the second drive path and configured to drive the second wheel; wherein each of the first, second and third electric drive motors are configured to provide drive up to the maximum speed of the vehicle.

A ride-on vehicle, such as for a child, includes a vehicle body and one or more wheels that support the vehicle body relative to a surface. At least one of the wheels includes a hub motor arrangement that provides a drive torque for propelling the vehicle. The hub motor arrangement includes a housing defining an interior space. An axle or other mounting element(s) define an axis of rotation of the housing. Preferably, the axle or other mounting element(s) do not pass completely through the housing. A motor drives the housing through a transmission. Preferably, the motor is a standard, compact motor that is positioned on the axis of rotation and can be laterally offset from a central plane of the housing. In some embodiments, a traction element is carried directly by the housing.

Helical gears in gear trains of speed reducers generate thrust forces in directions not to separate a speed reducer casing which has an axial three-piece structure, whereby leakage of lubricant oil from between separated surfaces in the speed reducer casing is prevented. Output gear which generates large thrust force on the final stage in each gear train of the speed reducers both generated inward forces, so that the center casing does not receive forces in directions in which the left and the right casings is separated therefrom.

A motor gearbox assembly is provided for a vehicle having two wheels on opposite sides of the vehicle. The assembly includes two independent drive systems that each include an electric motor and an associated gear train, each drive system being configured to independently drive one of the wheels. The assembly further includes a common housing that receives the motors and the gear trains such that the gear trains are at least partially positioned between the motors. Furthermore, at least portions of the drive systems have generally inverse orientations in a longitudinal direction of the vehicle when the motor gearbox assembly is mounted on the vehicle.

A speed reduction unit (31) includes an input shaft (32) coupled to a motor rotary shaft (22) of a motor unit (21), an input gear (33) coupled to the input shaft, a cylindrical output shaft (41) coupled to an outer ring (12), and an output gear (40) coupled to the output shaft, and constructs a driving-force transmission path that reduces the rotational speed of the input gear and transmits the reduced rotational speed to the output gear. The output shaft is rotatably supported at both ends by a first output-shaft bearing (44) rotatably supporting an outer diameter of an axially outer end side of the output shaft and a second output-shaft bearing (46) rotatably supporting an inner diameter of an axially inner end side of the output shaft.

The present invention belongs to the field of motors, and specifically relates to a switched reluctance motor of a novel structure. The switched reluctance motor includes stator tooth poles and rotor tooth poles, the rotor tooth poles are in rotation fit relative to the stator tooth poles, wherein the number of the stator tooth poles is twice as large as that of the rotor tooth poles; the stator tooth poles are fixedly connected in layers along the direction of a rotation axis, the stator tooth pole with thickness corresponding to the thickness range of the rotor tooth pole is called a rotor tooth pole unit, the stator tooth pole is composed of a stator tooth pole iron core and a stator tooth pole coil sleeved at the outside of the stator tooth pole iron core, an end part of the stator tooth pole iron core forming an air gap with the rotor tooth pole is a concave-convex fit circular arc surface, the cooperation relationship between the stator tooth pole and the rotor tooth pole is that no matter the rotor tooth pole rotates to any angle relative to the stator tooth pole, the center line of at least one layer of stator tooth poles forms an included angle with the center line of the corresponding rotor tooth pole unit, 0<, is an angle of a center of the circle corresponding to the circular arc of a cross section of the stator tooth pole iron core or the rotor tooth pole along the direction of the rotation axis.

An electric wheel, a remote controller, a vehicle using the electric wheel, and a method for driving a vehicle are disclosed. The electric wheel include a fixed wheel hub, a rotary wheel hub, a tire, a driving motor, and a battery and control unit. The fixed wheel hub may be connected with a vehicle shaft. The rotary wheel hub is mounted on the fixed wheel hub, with an accommodating cavity defined therebetween. The tire is attached around the rotary wheel hub. The driving motor is received in the accommodating cavity and configured to drive the rotary wheel hub. The battery and control unit is received in the accommodating cavity and configured to supply power to the driving motor and control operation of the driving motor. The battery and control unit comprising an embedded power supply to supply the power to the driving motor.

Disclosed are an electric vehicle chassis and an electric vehicle using the electric vehicle chassis. The electric vehicle chassis comprises a frame system (2), a steering motor damping system (13), a wheel system (12), a steering system (3) and a braking system (14), wherein the wheel system (12) comprises a left front wheel (121) using a hub motor, a left rear wheel (123) using a hub motor, a right front wheel (122) using a hub motor, and a right rear wheel (124) using a hub motor; and the steering motor damping system (13) comprises a left front steering damping motor (131), a right front steering damping motor (133), a left rear steering damping motor (135) and a right rear steering damping motor (137). Driving the wheels with the hub motors can omit a traditional mechanical transmission system, so as to simplify the structure of the chassis, reduce the weight of the chassis, and also reduce the mechanical transmission loss, thereby improving the power utilization efficiency.

An electric wheel, a remote controller, a vehicle using the electric wheel, and a method for driving a vehicle are disclosed. The electric wheel include a fixed wheel hub, a rotary wheel hub, a tire, a driving motor, and a battery and control unit. The fixed wheel hub may be connected with a vehicle shaft. The rotary wheel hub is mounted on the fixed wheel hub, with an accommodating cavity defined therebetween. The tire is attached around the rotary wheel hub. The driving motor is received in the accommodating cavity and configured to drive the rotary wheel hub. The battery and control unit is received in the accommodating cavity and configured to supply power to the driving motor and control operation of the driving motor. The battery and control unit comprising an embedded power supply to supply the power to the driving motor.

Helical gears in gear trains of speed reducers 2L, 2R generate thrust forces in directions not to separate a speed reducer casing 20 which has an axial three-piece structure, whereby leakage of lubricant oil from between separated surfaces in the speed reducer casing 20 is prevented. Output gears 25L, 25R which generates large thrust force on the final stage in each gear train of the speed reducers 2L, 2R both generates inward forces, so that the center casing 20a does not receive forces in directions in which the left and the right casings 20bL, 20bR is separated therefrom.