DRIVE DEVICE

WIPO Patent Application WO/2023/189034

A1

One embodiment of this drive device comprises: a motor having a first shaft; a power transmission unit having a second shaft; a housing; and a flow channel through which a fluid flows. The first shaft and the second shaft are mutually connected by engagement between a spline groove in a recess section and a spline protrusion of a protrusion section. The housing is provided with a dividing wall that partitions the interior of the housing into a motor chamber and a gear chamber. The dividing wall is provided with an interconnecting hole interconnecting the motor chamber and the gear chamber. An inner peripheral surface of the interconnecting hole holds a first bearing and a second bearing. An interconnecting space to which the recess section is open is provided in an interval in the axial direction between the first bearing and the second bearing in the interconnecting hole. The flow channel inlcudes: a first flow channel linking a first storage part to the interconnecting space; a second flow channel linking the interconnecting space to the inside of the recess section; and a third flow channel linking the interconnecting space to a second storage part.

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SUGINO MASAMI (JP)
WADA NAOHIRO (JP)
MAKINO YUSUKE (JP)
ASO KEISUKE (JP)
OSUGA SHOHEI (JP)

PCT/JP2023/006404

October 05, 2023

February 22, 2023

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NIDEC CORP (JP)

F16H57/04; H02K7/116

JP2021162079A	2021-10-11
JP2007205467A	2007-08-16
JP2001190042A	2001-07-10
JP2019108932A	2019-07-04
JP2017171252A	2017-09-28
JP2021148194A	2021-09-27

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