Title:
MOTOR UNIT AND IN-WHEEL MOTOR
Document Type and Number:
WIPO Patent Application WO/2019/124245
Kind Code:
A1
Abstract:
A motor unit according to one embodiment comprises: a motor part having a rotor and a stator; a reduction drive part; a case having an accommodation section for accommodating the motor part and the reduction drive part; oil; and a wheel. The rotor has an input shaft, a rotor magnet, and a rotor holder. The rotor holder has a tubular portion, and a circular disc portion positioned at one opening of the tubular portion. The reduction drive part has a sun gear, a plurality of planetary gears, and a ring gear. The accommodation section is provided with an oil passage for circulating oil. The oil passage includes an input shaft inner-radial oil passage. The circular disc portion has a base surface opposing the planetary gears in the axial direction, and a guide part that protrudes from the base surface toward the planetary gears and guides the oil flowing out from the input shaft inner-radial oil passage toward the planetary gears.
Inventors:
YAMAGUCHI YASUO (JP)
FUJIHARA HISASHI (JP)
NAKAMURA KEIGO (JP)
FUJIHARA HISASHI (JP)
NAKAMURA KEIGO (JP)
Application Number:
PCT/JP2018/046075
Publication Date:
June 27, 2019
Filing Date:
December 14, 2018
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H02K9/19; B60K7/00; F04C2/10; F16H1/28; F16H57/04; H02K7/08; H02K7/116; H02K7/14
Foreign References:
| JP2017166626A | 2017-09-21 | |||
| JP2015206454A | 2015-11-19 | |||
| JP2017192224A | 2017-10-19 |
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