Wheel assembly with in-wheel motor
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsTakeshi Ishida, Fumito Kurata, Toshiyuki Kobayashi
Life of this patent
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Abstract
A wheel assembly with an in-wheel motor in which a wheel driving apparatus formed of a motor or a combination of a motor and a reduction mechanism is provided in a wheel, includes an oil supply apparatus that is driven by rotational output of the motor, and an oil supply flow path that leads oil that has been drawn up by the oil supply apparatus to the wheel driving apparatus. The oil supply apparatus is structured so that oil can be supplied to the wheel driving apparatus via the oil supply flow path when the motor is rotating in the forward direction as well as when the motor is rotating in the reverse direction.
Claims20
A wheel assembly with an in-wheel motor comprising:
- a rotor arranged on an inner peripheral side of a stator;
- a driving gear coupled to an output shaft of the rotor;
- a counter gear in mesh with the driving gear, wherein the counter gear has a larger diameter than a diameter of the driving gear;
- an oil supply apparatus that is driven by output of a forward rotation and a reverse rotation of the motor via the counter gear,
- wherein the oil supply apparatus draws up oil from an oil tank via a suction path and supplies the oil to the in-wheel motor when the motor is rotating in a forward direction as well as when the motor is rotating in a reverse direction, and
- wherein the counter gear extends radially around the oil supply apparatus.
A wheel assembly with an in-wheel motor comprising:
- a rotor arranged on an inner peripheral side of a stator;
- a driving gear coupled to an output shaft of the rotor;
- a counter gear in mesh with the driving gear, wherein the counter gear has a larger diameter than a diameter of the driving gear;
- an oil supply apparatus that is driven by output of a forward rotation and a reverse rotation of the motor via the counter gear, wherein
- the oil supply apparatus is formed such that oil in an oil tank is supplied to the in wheel motor when the motor is rotating in a forward direction as well as when the motor is rotating in a reverse direction,
- the oil supply apparatus includes a piston pump,
- the piston pump includes an eccentric cam that is rotatably driven by rotational output of the motor, and a piston that moves in a reciprocating manner in conjunction with the rotation of the eccentric cam,
- a sun gear is formed on one end of a shaft and the counter gear is formed on an other end of the shaft in a width direction of the vehicle, and the oil supply apparatus is provided radially inward from the counter gear.
Dependencies are inferred from the claim text.