US 12,244,182 B2
Motor
Sung Joo Oh, Seoul (KR); and Jae Young Kim, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Appl. No. 17/757,903
Filed by LG INNOTEK CO., LTD., Seoul (KR)
PCT Filed Nov. 30, 2020, PCT No. PCT/KR2020/017293
§ 371(c)(1), (2) Date Jun. 23, 2022,
PCT Pub. No. WO2021/132917, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 10-2019-0173173 (KR), filed on Dec. 23, 2019; and application No. 10-2019-0177621 (KR), filed on Dec. 30, 2019.
Prior Publication US 2023/0031008 A1, Feb. 2, 2023
Int. Cl. H02K 1/27 (2022.01); H02K 1/278 (2022.01); H02K 21/14 (2006.01)
CPC H02K 1/278 (2013.01) [H02K 21/14 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A motor comprising:
a shaft;
a rotor coupled to the shaft; and
a stator disposed to correspond to the rotor,
wherein the rotor includes a rotor core, a magnet disposed on an outer surface of the rotor core, and a guide in contact with the rotor core,
the guide includes a first member in contact with one side surface of the rotor core and a plurality of second members which extend from the first member in an axial direction and are in contact with a side surface of the magnet, and
positions of one side end portions and the other side end portions of the second members are different from each other in a circumferential direction,
wherein the rotor core includes a plurality of protrusions protruding from an outer surface thereof, each of the protrusions is in contact with a side surface of one of the magnets, and one side end portion of each of the protrusions is in contact with one side end portion of each of the plurality of second members in the axial direction. respectively,
wherein an axial length of each of the protrusions is less than an axial length of the rotor core,
wherein each of the plurality of second members includes step surfaces (T1,T2) that are coplanar with a side surface of the first member, and
wherein the step surfaces (T1,T2) contact with an axial end of the magnet.