US 11,837,916 B2
Rotor for rotating electric machine
Takuya Miyagi, Ibaraki (JP); Toshiki Takahashi, Ibaraki (JP); Hayato Fujita, Ibaraki (JP); Yuichiro Baba, Ibaraki (JP); and Kenji Nakayama, Ibaraki (JP)
Assigned to Hitachi Astemo, Ltd., Hitachinaka (JP)
Appl. No. 17/298,785
Filed by Hitachi Astemo, Ltd., Hitachinaka (JP)
PCT Filed Dec. 13, 2019, PCT No. PCT/JP2019/048883
§ 371(c)(1), (2) Date Jun. 1, 2021,
PCT Pub. No. WO2020/145033, PCT Pub. Date Jul. 16, 2020.
Claims priority of application No. 2019-001327 (JP), filed on Jan. 8, 2019.
Prior Publication US 2022/0037940 A1, Feb. 3, 2022
Int. Cl. H02K 1/22 (2006.01); H02K 7/00 (2006.01)
CPC H02K 1/22 (2013.01) [H02K 7/003 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A rotor for a rotating electric machine comprising:
a shaft; and
a rotor iron core,
wherein
the shaft is coupled to the rotor iron core,
the rotor iron core includes: an outer edge portion housing a magnet; an inner edge portion coupled to the shaft; and a rib portion having a lightening portion that is formed inside between the outer edge portion and the inner edge portion,
the rib portion includes: a through-hole forming portion connected to the outer edge portion and having a through-hole inside; and a bridge portion connecting the through-hole forming portion and the inner edge portion,
the bridge portion includes: a second bridge portion protruding outward from a lower outer circumference of the through-hole forming portion; and a first bridge portion having one end connected to the inner edge portion and another end connected to the second bridge portion, and
a bent portion is provided at a position connecting the first bridge portion and the second bridge portion.