Drive device and vehicle
AssigneeNidec Corporation
InventorsYuki Ishikawa, Hitoshi Kuroyanagi, Naohiro Wada
Life of this patent
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Abstract
A gear portion of a drive device is connected to a motor shaft. An oil passage through which oil to cool a motor flows includes a first oil passage, a second oil passage, a third oil passage, and a fourth oil passage. The first oil passage connects a gear accommodation portion and a pump accommodation portion. The second oil passage connects the pump accommodation portion and an oil cooler. The third oil passage connects the oil cooler and the fourth oil passage. The fourth oil passage connects the third oil passage and a motor accommodation portion. Each of the first oil passage, the second oil passage, and the third oil passage is in a first housing portion. The fourth oil passage is in a third housing portion.
Claims11
A drive device comprising:
- a motor that includes a rotor including a motor shaft rotatable about a rotation axis extending along a horizontal direction, and a stator located radially outward of the rotor;
- a gear portion that is connected to one axial end portion of the motor shaft;
- a housing that accommodates the motor and the gear portion;
- a pump to supply oil accommodated in the housing to the motor;
- and
- an oil cooler to cool the oil;
- wherein
- the housing includes:
- a first housing portion that includes a tubular portion extending in an axial direction parallel to the rotation axis, a side plate portion covering one axial end portion of the tubular portion, and a pump accommodation portion accommodating the pump;
- a second housing portion that is attached to one axial end portion of the side plate portion;
- a third housing portion that closes another axial end portion of the tubular portion;
- a motor accommodation portion that is a space surrounded by the tubular portion, the side plate portion, and the third housing portion and accommodates the motor;
- a gear accommodation portion that is a space surrounded by the side plate portion and the second housing portion and accommodates the gear portion;
- a side plate opening that penetrates the side plate portion in an axial direction and connects the motor accommodation portion and the gear accommodation portion;
- and
- an oil passage through which the oil flows;
- the oil passage includes a first oil passage, a second oil passage, a third oil passage, and a fourth oil passage;
- the first oil passage connects the gear accommodation portion and the pump accommodation portion;
- the second oil passage connects the pump accommodation portion and the oil cooler;
- the third oil passage connects the oil cooler and the fourth oil passage;
- the fourth oil passage connects the third oil passage and the motor accommodation portion;
- each of the first oil passage, the second oil passage, and the third oil passage is in the first housing portion;
- and
- the fourth oil passage is in the third housing portion.
Dependencies are inferred from the claim text.