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Patent Searching and Data


Title:
DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/049465
Kind Code:
A1
Abstract:
The housing in one embodiment of the drive device of the present invention is provided with a pump chamber, and has an outer lid section for covering one side of a motor shaft in the axial direction thereof, and a first oil channel which is connected to a discharge port and is provided in the outer lid section. The outer lid section has a shaft insertion hole into which the motor shaft is inserted. The motor shaft has a second oil channel which is connected to the first oil channel and is provided inside the motor shaft, a first through-hole which connects the second oil channel and the outer-circumferential surface of the motor shaft to one another, and a second through-hole which connects the second oil channel and the outer-circumferential surface of the motor shaft to one another, and is positioned toward the one side in the axial direction relative to the first through-hole. The first through-hole is connected to the inside of the storage section. The first oil channel includes a groove which recesses toward the other side in the axial direction from the pump chamber surface on the other side thereof in the axial direction. The end section of the first oil channel toward the inside in the radial direction opens to the shaft insertion hole. The second through-hole opens to the outer-circumferential surface of the motor shaft section inserted into the shaft insertion hole, and is connected to the first oil channel via the shaft insertion hole.

Inventors:
YAMAGUCHI, Yasuo (338 Kuzetonoshiro-cho Minami-ku, Kyoto-sh, Kyoto 05, 〒6018205, JP)
Application Number:
JP2018/023305
Publication Date:
March 14, 2019
Filing Date:
June 19, 2018
Export Citation:
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Assignee:
NIDEC CORPORATION (338 Kuzetonoshiro-cho, Minami-ku Kyoto-sh, Kyoto 05, 〒6018205, JP)
International Classes:
H02K9/19; F04C15/00; F04C15/06; H02K7/14; H02K11/215
Domestic Patent References:
WO2016067352A12016-05-06
Foreign References:
JP2016111918A2016-06-20
US20120305226A12012-12-06
CN104979959A2015-10-14
JP2013150385A2013-08-01
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