Stator coil structure for revolving-field electrical machine and method of manufacturing same
AssigneeKabushiki Kaisha Moric
InventorTadashi Takano
Life of this patent
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Abstract
A number of embodiments of rotating electrical machines and methods for winding them that provides a high space utilization and very effective winding with less likelihood of damage to the insulation of the wire of the winding during the winding process. The arrangement basically does not require the winding needle to be moved back and forth in the slot between the poles but rather employs insulating inserts that are positioned on the axial faces of the poles outside of the gaps for guiding the wire from one end to the other so as to provide the high space utilization.
Claims24
A rotating electric machine comprising a stator having a circular core of a magnetic material and a plurality of magnetic pole teeth extending radially from said circular core, a rotor juxtaposed to the terminal ends of said magnetic pole teeth spaced from said circular core, each of said magnetic pole teeth defining a core and an enlargement formed at the terminal end of said core, to define slots formed between adjacent magnetic pole teeth, each of said slots having a mouth formed between adjacent enlargements, an insulator covering said cores of said magnetic pole teeth, coil windings wound around said cores of said magnetic pole teeth with said insulator being interposed therebetween, each of said insulators having at least one surface inclined relative to a radial plane perpendicular to the rotational axis of said rotating electric machine so that said magnetic pole teeth cores have a differing thickness in an axial direction along their length.
A rotating electric machine comprising a stator having a circular core of a magnetic material and a plurality of magnetic pole teeth extending radially from said circular core, a rotor juxtaposed to the terminal ends of said magnetic pole teeth spaced from said circular core, each of said magnetic pole teeth defining a core to define slots formed between adjacent magnetic pole teeth, each of said slots having a mouth formed between adjacent tooth ends, an insulator covering said cores of said magnetic pole teeth, coil windings wound around said cores of said magnetic pole teeth with said insulator being interposed therebetween, and a projection at at least one end of at least some of said pole teeth extending in a direction parallel to the rotational axis of said machine around which the wire of the respective wire of the coil winding is looped to form a return length of the coil winding that is not disposed in the slot between the pole tooth and adjacent pole teeth.
A rotating electric machine, comprising a stator having a circular core of a magnetic material and a plurality of magnetic pole teeth extending radially from said circular core, a rotor juxtaposed to the terminal ends of said magnetic pole teeth spaced from said circular core, each of said magnetic pole teeth defining a core to define slots formed between adjacent magnetic pole teeth, each of said slots having a mouth formed between adjacent tooth ends, an insulator covering said cores of said magnetic pole teeth, coil windings wound around said cores of said magnetic pole teeth with said insulator being interposed therebetween, and a plurality of dividing projections each extending from the core into the slots between adjacent pole teeth cores for separating the coil windings from each other.
Dependencies are inferred from the claim text.