US 12,261,507 B2
Motor
Hee Chul Jung, Seoul (KR); and Chang Hyun Park, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Appl. No. 17/912,343
Filed by LG INNOTEK CO., LTD., Seoul (KR)
PCT Filed Mar. 18, 2021, PCT No. PCT/KR2021/003338
§ 371(c)(1), (2) Date Sep. 16, 2022,
PCT Pub. No. WO2021/187906, PCT Pub. Date Sep. 23, 2021.
Claims priority of application No. 10-2020-0033331 (KR), filed on Mar. 18, 2020; and application No. 10-2020-0048019 (KR), filed on Apr. 21, 2020.
Prior Publication US 2023/0125238 A1, Apr. 27, 2023
Int. Cl. H02K 5/22 (2006.01); H02K 1/12 (2006.01)
CPC H02K 5/225 (2013.01) [H02K 1/12 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A motor comprising:
a housing;
a stator disposed in the housing;
a rotor disposed inside the stator; and
a shaft coupled to the rotor,
wherein the stator includes a stator core in contact with the housing,
wherein the stator core includes a first region and a second region having different outer diameters,
wherein the housing includes a third region and a fourth region having different inner diameters,
wherein the outer diameter of the first region is smaller than the outer diameter of the second region,
wherein the inner diameter of the third region is greater than the inner diameter of the fourth region,
wherein the first region and the third region are disposed to overlap in a radial direction of the shaft,
wherein the housing further include a fifth region,
wherein an inner diameter of the fifth region is smaller than the inner diameter of the fourth region,
wherein the third region is disposed between the fourth region and the fifth region in the axial direction, and
wherein the fifth region and the third region form a step, the step being in contact with the bottom surface of the stator core.