CPC B60K 17/046 (2013.01) [B60K 7/0007 (2013.01); F16H 57/043 (2013.01); F16H 57/0436 (2013.01); F16H 57/0479 (2013.01); F16H 57/0486 (2013.01); F16H 1/46 (2013.01); F16H 57/031 (2013.01); F16H 2057/02034 (2013.01); F16H 2057/02043 (2013.01)] | 18 Claims |
1. An in-wheel driving apparatus comprising:
a first planetary gear reducer into which oil is introduced; and
a first shaft configured to transmit power to the first planetary gear reducer, and including a first flow passage, into which the oil is introduced, formed therein,
wherein the first planetary gear reducer includes:
a sun gear coupled to an outer side of the first shaft and configured to receive the power from the first shaft to be rotated;
a planetary gear engaged with the sun gear, including a second shaft that is parallel to the first shaft, and configured to revolve along an outer circumference of the sun gear while rotating about the second shaft; and
a carrier coupled to the second shaft, and configured to rotate in conjunction with the revolution of the second shaft,
wherein the second shaft includes a plurality of flow passages communicated with the first flow passage, and
the plurality of flow passages is configured such that the oil introduced into the first planetary gear reducer flows in an introduction direction, and flows through one of the plurality of flow passages in a direction that is opposite to the introduction direction thereafter.
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