US 12,191,723 B2
Rotary electric machine having a stator core formed with stacked thin sheets and aircraft using the rotary electric machine core
Yoshihiro Miyama, Tokyo (JP); Hiroshi Mitsuda, Tokyo (JP); and Kazumasa Ito, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 17/917,257
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Jan. 21, 2021, PCT No. PCT/JP2021/002030
§ 371(c)(1), (2) Date Oct. 6, 2022,
PCT Pub. No. WO2021/240871, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 2020-094052 (JP), filed on May 29, 2020.
Prior Publication US 2023/0163669 A1, May 25, 2023
Int. Cl. H02K 1/18 (2006.01); B64D 27/24 (2024.01); H02K 16/02 (2006.01)
CPC H02K 16/02 (2013.01) [B64D 27/24 (2013.01); H02K 1/18 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A rotary electric machine comprising:
a stator core; and
two movable parts which are placed with the stator core interposed therebetween and rotate about an identical rotary shaft, wherein
at least part of the stator core is formed by stacking thin sheets in a rotation direction of the two movable parts,
the stator core has, at both ends, stator core retention portions extended in a direction parallel to surfaces thereof opposed to the two movable parts and perpendicular to the rotation direction of the movable parts,
retention surfaces of the stator core retention portions at both ends are respectively fixed in contact with retention members,
the retention surfaces of the stator core retention portions at both ends are formed to face toward each other, and
the stator core is fixed with tensile stress applied thereto.