Patent ID: 9583983
Date: 2017-02-28
CPC Classifications: H02K,Y10T

Claim:
1. An electric motor assembly, comprising: a housing including an outer housing surface, an inner housing surface defining an interior housing cavity, and a plurality of housing protrusions extending from the inner housing surface; a stator disposed in the interior housing cavity, the stator including an outer stator surface, an inner stator surface, and a plurality of stator protrusions extending from the outer stator surface toward the outer housing surface; wherein the stator protrusions are configured to mate with the housing protrusions to frictionally couple the stator to the housing in order to fix the stator relative to the housing; wherein each of the stator protrusions includes a stator engaging surface, and each of the housing protrusions includes a housing engaging surface configured to contact one of the stator engaging surfaces to couple the housing to the stator; and wherein the housing defines a center, and the stator engaging surfaces face away from the center of the housing, and a shape of the stator engaging surface is complementary to a shape of the housing engaging surface such that, when the stator engaging surface is aligned with the housing engaging surface, a friction between the housing engaging surface and the stator engaging surface causes the stator to be coupled to the housing, thereby fixing a position of the stator relative to the housing.