US 12,261,483 B2
Electric machine with low profile retention assembly for retention of stator core
Matthew Robert Martin, Schenectady, NY (US); Philip Michael Cioffi, Schaghticoke, NY (US); John Russell Yagielski, Scotia, NY (US); and Wei Zhang, Clifton Park, NY (US)
Assigned to GE INFRASTRUCTURE TECHNOLOGY LLC, Greenville, SC (US)
Filed by GENERAL ELECTRIC COMPANY, Schenectady, NY (US)
Filed on Oct. 28, 2022, as Appl. No. 17/975,666.
Prior Publication US 2024/0146125 A1, May 2, 2024
Int. Cl. H02K 1/18 (2006.01); H02K 1/20 (2006.01)
CPC H02K 1/185 (2013.01) [H02K 1/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A retention assembly for retention of a stator core in a stator of an electric machine, comprising:
a first housing to house the stator core, the first housing having an axial end face with a circumferentially extending, shaped profile having recessed portions that project axially inward from the axial end face of the housing alternating with non-recessed portions, wherein a portion of the stator core extends axially outward from the shaped profile at the axial end face of the first housing beyond the recessed portions; and
a core retention spring disposed circumferentially at the axial end face of the first housing, the core retention spring having direct contact with the portion of the stator core that extends axially outward from the shaped profile of the first housing and the shaped profile of the first housing, wherein the core retention spring pushes against the portion of the stator core that extends axially outward from the shaped profile of the first housing, imparting one or more of an axial load and a radial load into the stator core that maintains the stator core in axial and/or radial compression.