US 12,407,209 B2
Motor stator having a stator core with a wound sheet cylinder structure
Dong Hee Lee, Hwaseong-si (KR); Jae Wan Choi, Anyang-si (KR); Sung Gon Byun, Hwaseong-si (KR); and Ji Yeon Kim, Yongin-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. 30, 2022, as Appl. No. 18/072,363.
Claims priority of application No. 10-2022-0058803 (KR), filed on May 13, 2022.
Prior Publication US 2023/0369933 A1, Nov. 16, 2023
Int. Cl. H02K 3/52 (2006.01); H02K 1/18 (2006.01); H02K 1/20 (2006.01); H02K 9/19 (2006.01); H02K 21/24 (2006.01)
CPC H02K 3/522 (2013.01) [H02K 1/182 (2013.01); H02K 1/20 (2013.01); H02K 9/19 (2013.01); H02K 21/24 (2013.01); H02K 2203/12 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A motor stator comprising:
a pair of stator cores, each stator core of the pair of stator cores having a structure including a plate portion and a plurality of protrusions provided on one surface of the plate portion;
a pair of support structures for fixing the plurality of stator cores, each support structure of the pair of support structures including a plurality of through-holes into which the plurality of protrusions is inserted and a recess portion into which the plate portion is inserted and seated;
a bobbin having a plurality of insertion holes formed therein into which each of the plurality of protrusions, having respectively passed through each of the plurality of through-holes of the pair of support structures, is inserted with a coil wound on an outer surface thereof; and
a housing structure including an inner housing mounted on inner circumferences of the pair of support structures and an outer housing mounted on outer circumferences of the pair of support structures,
wherein the housing includes an inner housing joined to inner diameter surfaces of the pair of support structures and an outer housing joined to outer diameter surfaces of the pair of support structures in order to seal the bobbin on which the coil is wound,
wherein the inner housing is joined by laser welding or thermal fusion to the inner diameter surfaces of the pair of support structures, and
wherein the outer housing is joined by laser welding or thermal fusion to the outer diameter surfaces of the pair of support structures.