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Title:
MOTOR UNIT AND IN-WHEEL MOTOR
Document Type and Number:
WIPO Patent Application WO/2019/124244
Kind Code:
A1
Abstract:
One mode of this motor unit comprises: a motor part that has a rotor and a stator; a reducer unit; a case that is fixed to the vehicle, and that has a housing unit for housing the motor part and the reducer unit; oil that is stored inside the housing unit; and a wheel. The rotor has: an input shaft that extends along a center axis; a rotor magnet; and a rotor holder that holds the input shaft and the rotor magnet. The reducer unit has: a sun gear provided on the outer circumference surface of the input shaft; a plurality of planetary gears; a ring gear; a plurality of carrier pins that support the plurality of planetary gears; and a carrier that holds the plurality of carrier pins. An oil path for circulating oil is provided in the housing unit. The oil path includes a first pin-internal oil path in which the interiors of the carrier pins open on at least one extending-axis-direction side along the axial direction, and a second pin-internal oil path via which the first pin-internal oil part and the exterior of the carrier pin communicate.

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Inventors:
YAMAGUCHI YASUO (JP)
FUJIHARA HISASHI (JP)
NAKAMURA KEIGO (JP)
Application Number:
PCT/JP2018/046074
Publication Date:
June 27, 2019
Filing Date:
December 14, 2018
Export Citation:
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Assignee:
NIDEC CORP (JP)
International Classes:
H02K9/19; B60K7/00; F04C2/10; F16H1/28; F16H57/04; H02K3/24; H02K7/08; H02K7/116; H02K7/14
Foreign References:
JP2017166626A2017-09-21
JP2015206454A2015-11-19
JP2017192224A2017-10-19
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