US 12,065,027 B2
Reducer for electric vehicle
Il Han Yoo, Hwaseong-si (KR); Se Hwan Cheon, Hwaseong-si (KR); and Min Su Sun, Suwon-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed on Nov. 6, 2023, as Appl. No. 18/502,369.
Application 18/502,369 is a continuation of application No. 17/692,825, filed on Mar. 11, 2022, granted, now 11,845,330.
Claims priority of application No. 10-2021-0095019 (KR), filed on Jul. 20, 2021.
Prior Publication US 2024/0066967 A1, Feb. 29, 2024
Int. Cl. F16H 48/40 (2012.01); B60K 1/00 (2006.01); F16H 57/04 (2010.01)
CPC B60K 1/00 (2013.01) [F16H 48/40 (2013.01); F16H 57/043 (2013.01); F16H 57/0469 (2013.01); B60K 2001/001 (2013.01); B60Y 2400/73 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A reducer for an electric vehicle, the reducer comprising:
an input shaft connected to a motor;
a differential disposed coaxially with the input shaft and being rotatable relative to the input shaft;
a reduction device configured to decelerate power of the input shaft and to transmit the power to a differential casing of the differential;
a drive shaft coupled to one side gear of the differential and configured to penetrate the input shaft; and
a disconnector configured to connect or disconnect a power transmission path between the input shaft and the differential casing;
wherein an end of the input shaft is inserted into the differential casing, and a first bearing is positioned between an inner circumferential surface of the differential casing and an outer circumferential surface of the input shaft;
wherein the input shaft is supported on a casing by a second bearing and a third bearing spaced apart from each other in an axial direction, and the differential casing is supported by a fourth bearing on the casing at a position spaced apart from the first bearing in the axial direction; and
wherein the reduction device is supported by a fifth bearing on the casing between the first bearing and the second bearing in the axial direction.