US 12,355,301 B2
Stator for rotating electrical machine, rotating electrical machine, method for manufacturing stator for rotating electrical machine, and method for manufacturing rotating electrical machine
Mamoru Kimura, Tokyo (JP); Hirohisa Sano, Tokyo (JP); Kyohei Aimuta, Tokyo (JP); Toshio Abe, Tokyo (JP); and Motoki Ohta, Tokyo (JP)
Assigned to Proterial, Ltd., Tokyo (JP)
Appl. No. 17/760,766
Filed by Proterial. Ltd., Tokyo (JP)
PCT Filed Sep. 23, 2020, PCT No. PCT/JP2020/035856
§ 371(c)(1), (2) Date Mar. 16, 2022,
PCT Pub. No. WO2021/060298, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-172812 (JP), filed on Sep. 24, 2019; and application No. 2020-046196 (JP), filed on Mar. 17, 2020.
Prior Publication US 2022/0344980 A1, Oct. 27, 2022
Int. Cl. H02K 1/02 (2006.01); H02K 1/14 (2006.01); H02K 15/022 (2025.01)
CPC H02K 1/02 (2013.01) [H02K 1/146 (2013.01); H02K 15/022 (2013.01); H02K 2213/03 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A stator for a rotating electrical machine, wherein
the stator comprises an annular first iron core part which is a stacked body including electrical steel sheets and a second iron core part which is a stacked body including an amorphous soft magnetic metal or a nanocrystalline soft magnetic metal,
wherein the annular first iron core part comprises a plurality of tooth parts which protrudes toward an inner peripheral side and on which a coil is wound, and a first groove part formed in each of the plurality of tooth parts from an outer peripheral surface of the annular first iron core part and extending from an outer surface side of the annular first iron core part toward a tip end inside each of the plurality of tooth parts, and
the second iron core part is disposed in the first groove part.