US 12,187,383 B2
Drive device and electric vehicle
Tadahiro Kuramoto, Kyoto (JP); Toshiyuki Sasaki, Kyoto (JP); and Takeshi Ohiro, Kyoto (JP)
Assigned to NIDEC CORPORATION, Kyoto (JP)
Filed by NIDEC CORPORATION, Kyoto (JP)
Filed on Feb. 8, 2022, as Appl. No. 17/666,572.
Claims priority of application No. 2021-018633 (JP), filed on Feb. 8, 2021.
Prior Publication US 2022/0250714 A1, Aug. 11, 2022
Int. Cl. B62M 6/75 (2010.01)
CPC B62M 6/75 (2013.01) 11 Claims
OG exemplary drawing
 
1. A drive device, comprising:
a motor configured to rotate about a central axis;
an output part configured to rotate about an output axis and output torque to the outside, wherein the output axis is different from the central axis and parallel to the central axis;
a gear part transmitting torque of the motor to the output part; and
a housing having an internal space in which the motor, a portion of the output part, and the gear part are accommodated,
wherein the gear part comprises
at least one gear shaft extending in an axial direction, to which at least one gear is fixed, and
a gear case accommodating the at least one gear,
wherein the gear case comprises
a wall part facing an outer circumferential surface of the accommodated at least one gear in a radial direction and extending in a circumferential direction, and
an opening penetrating over the wall part in the radial direction,
wherein the opening faces the housing in the radial direction,
wherein the wall part has a front end disposed on a front side of the at least one gear in a rotation direction with respect to the opening, and
wherein the front end contacts the housing.