CPC F16H 57/0415 (2013.01) [F16H 57/037 (2013.01); F16H 57/0482 (2013.01); F16H 2057/02034 (2013.01); F16H 2057/02052 (2013.01)] | 10 Claims |
1. A power transmission device comprising:
a motor;
a gear mechanism connected downstream of the motor, the gear mechanism being lubricated by oil; and
a box having
a wall part that covers an outer circumference of the gear mechanism, and
a jacket part that covers an outer circumference of the wall part,
a cooling chamber, in which cooling liquid is introduced, being formed between the wall part and the jacket part, wherein
the cooling chamber includes a portion that overlaps with the gear mechanism when seen from a radial direction, and a portion that overlaps the gear mechanism when seen from an axial direction.
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