US 12,348,081 B2
Stator assembly including stiffener and method of assembly thereof
Kerry Baker Shelton, Fort Wayne, IN (US); Subhash Marutirao Brahmavar, Fort Wayne, IN (US); Andrew Craig Barry, Fort Wayne, IN (US); Mohamad Khalil Dahouk, Fort Wayne, IN (US); and Lester Benjamin Manz, Paulding, OH (US)
Assigned to Regal Beloit America, Inc., Milwaukee, WI (US)
Filed by Regal Beloit America, Inc., Beloit, WI (US)
Filed on Jun. 16, 2020, as Appl. No. 16/902,573.
Application 16/902,573 is a continuation of application No. 15/624,962, filed on Jun. 16, 2017, abandoned.
Prior Publication US 2020/0313474 A1, Oct. 1, 2020
Int. Cl. H02K 1/14 (2006.01); H02K 1/18 (2006.01); H02K 15/022 (2025.01); H02K 15/13 (2025.01)
CPC H02K 1/185 (2013.01) [H02K 1/146 (2013.01); H02K 15/022 (2013.01); H02K 15/13 (2025.01); H02K 2213/03 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A stator assembly for an electric motor assembly, the electric motor assembly including a spoked rotor having ten poles, said stator assembly comprising:
an annular body extending about a central axis, wherein said annular body includes an inner surface and an outer surface, said annular body having a first thickness defined between said inner surface and said outer surface;
a plurality of stator teeth coupled to said annular body and extending radially from said annular body and defining twelve stator slots therebetween, each stator tooth of said plurality of stator teeth including two circumferentially opposing tips spaced radially from said annular body, and side surfaces defining a tooth thickness therebetween, wherein a ratio of said first thickness to said tooth thickness is in a range of 1.1 to 1.5;
a plurality of conduction coils, each conduction coil of said plurality of conduction coils is coupled to one stator tooth of said plurality of stator teeth, wherein said plurality of conduction coils includes one conduction coil for each stator tooth of said plurality of stator teeth;
a plurality of stiffeners positioned circumferentially between and coupled to one of the two tips for each of a pair of adjacent stator teeth of said plurality of stator teeth, each of said plurality of stiffeners positioned radial distance from said annular body and said plurality of conduction coils,
wherein each of said plurality of stiffeners is positioned between every other pair of stator teeth of said plurality of stator teeth; and
a housing supporting the annular body, the housing including a shell and an end shield, wherein the end shield is a circular plate and extends continuously across an end of the shell, and wherein the shell and the end shield are solid and free of any openings.