Title:
DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/188621
Kind Code:
A1
Abstract:
One aspect of a drive device according to the present invention comprises a motor, a power transmission part, a housing, first and second bearings, and a flow path in which a fluid flows. An end part on one side in the axial direction of a first shaft of the motor has a connection opening in which a spline groove is provided. An end part on the other side in the axial direction of a second shaft of the power transmission part has a connection protrusion in which a spline projection is provided. The first shaft and the second shaft are connected by the spline groove and the spline projection meshing with each other. Provided to a partition wall of the housing is a communicating hole via which a motor chamber and a gear chamber are in communication. The inner peripheral surface of the communicating hole holds the first bearing and the second bearing. Between the axial direction of the second bearing and the first bearing in the communicating hole is provided a connection space into which the connection opening opens. The flow path has a first flow path that connects the gear chamber and the connection space and a second flow path that connects the connection space and the motor chamber.
Inventors:
SUGINO MASAMI (JP)
WADA NAOHIRO (JP)
MAKINO YUSUKE (JP)
ASO KEISUKE (JP)
OSUGA SHOHEI (JP)
WADA NAOHIRO (JP)
MAKINO YUSUKE (JP)
ASO KEISUKE (JP)
OSUGA SHOHEI (JP)
Application Number:
PCT/JP2022/047298
Publication Date:
October 05, 2023
Filing Date:
December 22, 2022
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
F16H57/04; H02K7/116
Foreign References:
| JP2021162079A | 2021-10-11 | |||
| JP2001190042A | 2001-07-10 | |||
| JP2007205467A | 2007-08-16 | |||
| JP2019108932A | 2019-07-04 | |||
| JP2021148194A | 2021-09-27 |
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