US Patent No. 9,369,010

STATOR OF ELECTRIC MOTOR INCLUDING RESIN INJECTED BY INJECTION MOLDING


Patent No. 9,369,010
Issue Date June 14, 2016
Title Stator Of Electric Motor Including Resin Injected By Injection Molding
Inventorship Takeshi Tamaki, Yamanashi (JP)
Assignee FANUC CORPORATION, Yamanashi (JP)

Claim of US Patent No. 9,369,010

1. A stator of an electric motor comprising:
a stator core which includes a core back and a plurality of teeth protruding inwardly from the core back; and
a resin molding portion formed in an inner circumferential portion and an outer circumferential portion of the stator core
by means of injection molding,

the stator comprising a partition member provided in an axial end portion of the stator and adapted to partition the inner
circumferential portion and the outer circumferential portion of the stator core,

wherein the partitioning member makes resin injected from the axial end portion flow in a bifurcated passage into the inner
circumferential portion and the outer circumferential portion.