Patent ID: 11863052
Assignee: NIDEC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A drive device, comprising:
a motor including a rotor rotatable about a central axis;
a transmission connected to the motor; and
a housing including a motor housing accommodating the motor therein and a transmission housing accommodating the transmission therein; wherein
a first fluid is accommodated in the transmission housing;
the housing includes:
a first flow path through which the first fluid flows; and
a second flow path through which a second fluid flows;

the first flow path includes:
a supply flow path that supplies the first fluid in the transmission housing to an inside of the motor housing; and
a collection flow path extending from the inside of the motor housing to an inside of the transmission housing;

at least a portion of the second flow path is located radially outside the motor;
at least a portion of the collection flow path is located radially outside the second flow path; and
at least a portion of the first flow path overlaps a portion of the second flow path within a peripheral wall of the motor housing when viewed along a radial direction.