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US 10,797,568 B2Granted
Motor unit and vehicle
AssigneeHonda Motor Co., Ltd.
InventorsTatsuya Ohzu, Yutaka Arimura, Daisuke Hoshino, Shingo Soma, Yosuke Tanaka
Life of this patent
Estimating the term…
Abstract
A motor unit including a drive motor that includes an output shaft having a hollow portion; a torque sensor arranged within the hollow portion; and a cooling mechanism. The cooling mechanism has one end of a coolant path arranged inside the hollow portion and cools the drive motor and the torque sensor. A vehicle can include the motor unit. The drive motor can act as a traction motor generating traction drive force of the vehicle.
Claims4
A motor unit comprising:
- a drive motor that includes an output shaft having a hollow portion;
- a torque sensor arranged within the hollow portion;
- and
- a cooling mechanism that has one end of a coolant path arranged inside the hollow portion and cools the drive motor and the torque sensor,
- wherein the cooling mechanism includes a pipe that is secured to a stator-side component of the drive motor, is arranged inside the output shaft, and allows a coolant to flow through the pipe, and
- wherein the torque sensor is a magnetostrictive torque sensor that includes a plurality of magnetostrictive layers arranged on an inner circumferential surface of the output shaft, and a plurality of coils arranged in the pipe.
3 more elements
A vehicle comprising a motor unit comprising:
- a drive motor that includes an output shaft having a hollow portion;
- a torque sensor arranged within the hollow portion;
- and a cooling mechanism that has one end of a coolant path arranged inside the hollow portion and cools the drive motor and the torque sensor, wherein
- the drive motor is a traction motor that generates a traction drive force of the vehicle or a generator that generates power based on a drive force of an internal combustion engine of the vehicle,
- wherein the cooling mechanism includes a pipe that is secured to a stator-side component of the drive motor, is arranged inside the output shaft, and allows a coolant to flow through the pipe, and
- wherein the torque sensor is a magnetostrictive torque sensor that includes a plurality of magnetostrictive layers arranged on an inner circumferential surface of the output shaft, and a plurality of coils arranged in the pipe.
3 more elements
Dependencies are inferred from the claim text.