In-wheel actuator and in-wheel assembly comprising the same

摘要

An in-wheel assembly is provided, and the in-wheel assembly includes an in-wheel actuator and a wheel. The in-wheel actuator includes a driving motor; a decelerator which is disposed inside the driving motor and configured to reduce a rotational speed of the driving motor; and a hollow shaft which is disposed inside the driving motor and configured to transfer a rotational force of the driving motor to the decelerator, which is accommodated in a hollow of the hollow shaft, and circulates fluid inside of the driving motor with respect to a surface of the decelerator when driven to rotate by the driving motor. The wheel accommodates the in-wheel actuator and receives a rotational speed reduced by the decelerator to rotate.

主权项

1. An in-wheel actuator comprising:
a driving motor; a decelerator which is disposed inside the driving motor and configured to reduce a rotational speed of the driving motor; and a hollow shaft which is disposed inside the driving motor and configured to transfer a rotational force of the driving motor to the decelerator and circulates fluid inside the driving motor with respect to a surface of the decelerator when driven to rotate by the driving motor, wherein the hollow shaft comprises: a shaft body which is configured to transfer the rotational force of the driving motor to the decelerator and has a hollow formed therein and two ends with a plurality of fluid gates formed therein, the fluid being drawn in or discharged through the hollow of the shaft body through the fluid gates, wherein the decelerator is accommodated in the hollow of the shaft body; and at least one vane which is provided on an inner surface of the shaft body in the hollow of the shaft body, and is configured to blow the fluid during rotation of the shaft body.