US 11,920,661 B2
Vehicle transmission and vehicle powertrain device
Se Hoon Oh, Gyeonggi-do (KR); Jae Won Shin, Seoul (KR); Jae Oh Han, Seoul (KR); Sun Hyun Kim, Seoul (KR); and Duk Soon Choi, Chungcheongnam-do (KR)
Assigned to NEOOTO CO., LTD., Seoul (KR)
Appl. No. 17/426,653
Filed by NEOOTO CO., LTD., Seoul (KR)
PCT Filed Apr. 5, 2019, PCT No. PCT/KR2019/004026
§ 371(c)(1), (2) Date Jul. 29, 2021,
PCT Pub. No. WO2020/184774, PCT Pub. Date Sep. 17, 2020.
Claims priority of application No. 10-2019-0028861 (KR), filed on Mar. 13, 2019.
Prior Publication US 2022/0107007 A1, Apr. 7, 2022
Int. Cl. F16H 3/66 (2006.01); B60K 1/00 (2006.01); F16H 57/08 (2006.01); F16H 57/10 (2006.01)
CPC F16H 3/66 (2013.01) [B60K 1/00 (2013.01); F16H 57/082 (2013.01); B60K 2001/001 (2013.01); F16H 57/10 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A vehicle transmission comprising:
a driving sun gear receiving a driving force from a motor;
a first sun gear having a same rotating axis as the driving sun gear;
a second sun gear inserted into the first sun gear and having a same rotating axis as the first sun gear;
a plurality of planetary gears comprising a plurality of stages, the plurality of stages respectively meshing with the driving sun gear, the first sun gear, and the second sun gear;
a carrier coupled to rotate a planetary gear and into which the first sun gear and the second sun gear are inserted; and
a base coupled to the carrier,
wherein the carrier comprises:
an output gear disposed on an outer circumferential surface of the carrier and meshing with a differential device; and
a plurality of bumps extending toward the motor in a circumferential direction,
wherein the planetary gear comprises:
a plurality of input idle gears meshing with the driving sun gear;
a plurality of first idle gears meshing with the first sun gear; and
a plurality of second idle gears meshing with the second sun gear,
wherein the base comprises:
a body in which a plurality of cut parts where the plurality of planetary gears is seated respectively, and a plurality of protrusions adjacent to the plurality of cut parts are repeatedly disposed on the upper surface thereof;
a plurality of first supporters fixed on the plurality of cut parts respectively and into which the plurality of planetary gears is inserted; and
a plurality of second supporters fixed on the plurality of the bumps respectively,
wherein the input idle gear is disposed between the plurality of protrusions,
wherein the first idle gear and the second idle gear are disposed between the bumps,
wherein a length in the circumferential direction of the bumps is longer than a length in the circumferential direction of the protrusions,
wherein a diameter of the input idle gear is greater than diameters of the first idle gear and the second idle gear.