Molded resin motor housing
First Claim
Patent Images
1. An electric motor housing assembly comprising:
- a molded motor housing having a central axis and open and closed ends;
a flux ring having an inner cylindrical surface and an outer surface and being molded in place within said housing;
an armature bearing having an inner cylindrical surface and an outer surface and being molded in place within said closed end of the housing;
alignment elements for mounting a cover being molded in place at said open end of the housing;
said inner cylindrical surfaces of the flux ring and the armature bearing being molded within said housing in positions defined by different portions of a single mold core parts; and
said inner cylindrical surfaces of the flux ring and the armature bearing, together with said alignment elements, being molded within said housing in positions that are centered with respect to said central axis independently of said outer surfaces of the flux ring and the armature bearing.
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Abstract
An electric motor assembly for housing assembly (10) for electromechanical drives in automobiles is injection molded from a resin material. An armature bearing (18), mounting holes (30), and a flux ring (38) are molded in place within a housing (12) so that inner cylindrical surfaces (20 and 40) of the armature bearing and flux ring are centered with respect to the mounting holes (30) along a central axis (34). Protrusions (52 and 52) are molded through openings in the flux ring (38) for holding permanent magnets (44 and 46) in place against the flux ring.
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Citations
19 Claims
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1. An electric motor housing assembly comprising:
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a molded motor housing having a central axis and open and closed ends; a flux ring having an inner cylindrical surface and an outer surface and being molded in place within said housing; an armature bearing having an inner cylindrical surface and an outer surface and being molded in place within said closed end of the housing; alignment elements for mounting a cover being molded in place at said open end of the housing; said inner cylindrical surfaces of the flux ring and the armature bearing being molded within said housing in positions defined by different portions of a single mold core parts; and said inner cylindrical surfaces of the flux ring and the armature bearing, together with said alignment elements, being molded within said housing in positions that are centered with respect to said central axis independently of said outer surfaces of the flux ring and the armature bearing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A housing for an electric motor comprising:
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a main body molded from a resin material; a magnetic flux ring molded in place within said main body; said magnetic flux ring having an inner cylindrical surface and an outer surface that is contiguous with said main body; openings formed through said magnetic flux ring between said inner and outer surfaces of the flux ring; said main body of said resin material including protrusions molded through said openings in said flux ring; and said protrusions being shaped for securing said flux ring to said main body and for holding magnets in place against said flux ring. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification