US 12,470,102 B2
Rotor assembly having a containment ring for an electric motor
Matthew Schmitt, Salt Lake City, UT (US); and Devan James Anderson, Taylor, MI (US)
Assigned to Ford Global Technologies, LLC, Dearborn, MI (US)
Filed by Ford Global Technologies, LLC, Dearborn, MI (US)
Filed on Oct. 19, 2023, as Appl. No. 18/490,093.
Prior Publication US 2025/0132623 A1, Apr. 24, 2025
Int. Cl. H02K 1/32 (2006.01); H02K 1/276 (2022.01); H02K 15/03 (2006.01); H02K 15/12 (2006.01); H02K 21/14 (2006.01)
CPC H02K 1/32 (2013.01) [H02K 1/276 (2013.01); H02K 15/03 (2013.01); H02K 15/12 (2013.01); H02K 21/14 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A rotor assembly for an electric motor, comprising:
a rotor core defining a rotor bore and a plurality of cavities distributed about the rotor bore and extending through the rotor core;
a plurality of magnets disposed in the plurality of cavities; and
a rotor core mold member extending through the plurality of cavities to retain the plurality of magnets therein and, from the cavities, extending to a first end of the rotor core forming a containment ring at the first end, wherein the containment ring forms a rim above a surface of the first end to restrict flow of a fluid to an outer side surface of the rotor core.