US 12,065,035 B2
In-wheel drive device and vehicle including the same
Kyeong Ho Shin, Yongin-si (KR)
Assigned to Hyundai Mobis Co., Ltd., Seoul (KR)
Filed by HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed on Jul. 26, 2021, as Appl. No. 17/384,906.
Claims priority of application No. 10-2020-0093326 (KR), filed on Jul. 27, 2020.
Prior Publication US 2022/0024304 A1, Jan. 27, 2022
Int. Cl. F16H 57/08 (2006.01); B60B 27/00 (2006.01); B60K 7/00 (2006.01); B60K 17/04 (2006.01); F16H 57/023 (2012.01); F16H 55/17 (2006.01)
CPC B60K 17/046 (2013.01) [B60B 27/0015 (2013.01); B60B 27/0094 (2013.01); B60K 7/0007 (2013.01); F16H 57/023 (2013.01); F16H 57/08 (2013.01); F16H 2055/176 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An in-wheel drive device, comprising:
a wheel bearing comprising a hub and an outer race spaced apart outward in a radial direction from the hub; and
a speed reducer comprising a ring gear coupled to the wheel bearing,
wherein an outer surface of the ring gear, in the radial direction, and an inner surface of the wheel bearing, in the radial direction, adjoin each other to define a first region and a second region,
wherein the ring gear comprises a protruding portion disposed on the outer surface of the ring gear in the second region and having a shape protruding toward the inner surface of the wheel bearing,
wherein the wheel bearing comprises a recessed portion disposed on the inner surface of the wheel bearing in the second region and having a shape corresponding to a shape of the protruding portion of the ring gear, and
wherein the protruding portion and the recessed portion engage each other in the second region to define an engagement section.