US 11,873,897 B2
Drive apparatus
Shuhei Nakamatsu, Kyoto (JP); Shinsuke Mizukami, Kyoto (JP); Tsubasa Tamura, Kyoto (JP); and Keisuke Aso, Kyoto (JP)
Assigned to NIDEC CORPORATION, Kyoto (JP)
Filed by NIDEC CORPORATION, Kyoto (JP)
Filed on Aug. 3, 2021, as Appl. No. 17/392,260.
Claims priority of application No. 2020-136250 (JP), filed on Aug. 12, 2020.
Prior Publication US 2022/0049768 A1, Feb. 17, 2022
Int. Cl. F16H 57/04 (2010.01); F16H 63/34 (2006.01); H02K 9/19 (2006.01)
CPC F16H 63/3483 (2013.01) [F16H 57/0424 (2013.01); F16H 57/0476 (2013.01); F16H 63/3458 (2013.01); H02K 9/19 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A drive apparatus, comprising:
a motor that has a motor shaft extending in an axial direction;
a transmission mechanism that is connected on one side in the axial direction of the motor shaft;
a lock mechanism that restricts driving of the transmission mechanism;
a housing that houses the motor, the transmission mechanism, and the lock mechanism;
an oil that is stored in the housing; and
an oil passage that circulates the oil,
wherein
the housing includes:
a motor room that houses the motor,
a gear room that houses the transmission mechanism and the lock mechanism, and
a partition that is provided between the motor room and the gear room,
the oil passage includes:
a pump that pumps the oil in the oil passage,
a first feed flow passage that feeds the oil to the motor, and
a second feed flow passage that feeds the oil to the lock mechanism,
the first feed flow passage includes:
an intra-wall flow passage that extends along a wall surface in an interior of the partition, and
a motor feed flow passage that extends from the intra-wall flow passage on the other side in the axial direction, and feeds the oil to the motor, and
the second feed flow passage extends from the intra-wall flow passage to the one side in the axial direction so as to penetrate the partition, and opens to an interior of the gear room.