US 12,218,561 B2
Electric machine assembly having a rotor frame to provide cooling
Jeffrey William Crosson, Dayton, OH (US)
Assigned to REGAL BELOIT AMERICA, INC., Milwaukee, WI (US)
Filed by REGAL BELOIT AMERICA, INC., Beloit, WI (US)
Filed on Feb. 24, 2022, as Appl. No. 17/679,955.
Claims priority of provisional application 63/153,660, filed on Feb. 25, 2021.
Prior Publication US 2022/0271623 A1, Aug. 25, 2022
Int. Cl. H02K 5/22 (2006.01); H02G 11/00 (2006.01); H02K 3/52 (2006.01); H02K 5/10 (2006.01); H02K 5/15 (2006.01); H02K 5/18 (2006.01); H02K 9/06 (2006.01); H02K 9/22 (2006.01); H02K 15/02 (2006.01); H05K 7/14 (2006.01)
CPC H02K 5/225 (2013.01) [H02G 11/00 (2013.01); H02K 3/522 (2013.01); H02K 5/10 (2013.01); H02K 5/15 (2013.01); H02K 5/18 (2013.01); H02K 9/06 (2013.01); H02K 9/227 (2021.01); H02K 15/02 (2013.01); H05K 7/1491 (2013.01); H02K 2203/06 (2013.01); H02K 2205/09 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A rotor assembly for use with an electric machine assembly, said rotor assembly comprising:
a plurality of magnets; and
a rotor frame comprising:
a pair of opposing end plates;
a plurality of circumferentially spaced longitudinal members extending between said opposing end plates, wherein said opposing end plates and said plurality of longitudinal members combine to define a plurality of openings that are each sized and shaped to receive a magnet of the plurality of magnets, wherein at least one of said opposing end plates comprises a plurality of fins extending therefrom in a direction opposite said longitudinal members,
wherein said plurality of fins are positioned proximate an outer periphery of said at least one end plate such that an outer periphery of said plurality of fins is radially flush with the outer periphery of the at least one end plate.