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Title:
MOTOR UNIT
Document Type and Number:
WIPO Patent Application WO/2019/131417
Kind Code:
A1
Abstract:
Provided is a motor unit provided with a motor having a rotor rotating around a motor shaft extending along a horizontal direction and a stator surrounding the rotor from outside in a radial direction of the motor shaft, a housing accommodating the motor, and oil accommodated in the housing. The housing has a motor housing part internally provided with a motor chamber accommodating the motor. The housing is provided with an oil passage through which the oil is circulated to cool the motor. In a path in the oil passage is provided a cooler cooling the oil passing through the oil passage. The cooler has a contact surface which comes in contact with an outer circumferential surface of the motor housing part below the motor chamber in a vertical direction. The oil passage includes a path passing between the motor and the contact surface in a lower area of the motor chamber.

Inventors:
ISHIKAWA YUKI (JP)
Application Number:
PCT/JP2018/046950
Publication Date:
July 04, 2019
Filing Date:
December 20, 2018
Export Citation:
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Assignee:
NIDEC CORP (JP)
International Classes:
H02K9/19; H02K5/20; H02K7/116; H02K11/33
Foreign References:
JP2015072054A2015-04-16
JPH03172639A1991-07-26
JPH01119979U1989-08-14
JPH0971994A1997-03-18
JP2014024489A2014-02-06
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