ROTATING ELECTRIC MACHINE AND DRIVE DEVICE

WIPO Patent Application WO/2022/180875

A1

Provided are a rotating electric machine in which the efficiency of cooling a rotor and a stator is improved and a drive device. This rotating electric machine 10 comprises a rotor 30 having a shaft 1 and a stator located outside the rotor 30 in the radial direction. The shaft 1 comprises: a cylindrical shaft body 2 having a first screw portion 21 provided on the inner circumferential surface 231 and a plurality of first side holes 22 penetrating in the radial direction; and a cylindrical body 5 having a second screw portion 51 provided on the outer circumferential surface 501 and a plurality of second side holes 52 penetrating in the radial direction. The second screw portion 51 is rotated and fitted into the first screw portion 21, and thereby, in an attachment state in which the cylindrical body 5 is attached to one side of the shaft body 2 in the axis J direction, the plurality of second side holes 52 are located on the one side in the axis J direction with respect to the plurality of first side holes 22. The plurality of first side holes 22 and the plurality of second side holes 52 are connected to each other through between the first screw portion 21 and the second screw portion 51 and function as flow paths 12 through which an oil O can pass.

SASAKI RYOMA (JP)
MAEDA SHIGERU (JP)

PCT/JP2021/022349

September 01, 2022

June 11, 2021

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NIDEC CORP (JP)

H02K9/19; F16H57/04

WO2011132784A1

2011-10-27

JPS5386414A	1978-07-29
JP2015226363A	2015-12-14
JP2013051805A	2013-03-14
JP2016014445A	2016-01-28

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