Winding method and structure for stator coils
AssigneeTamagawa Seiki Kabushiki Kaisha
InventorsMitsuru Kimura, Shigeru Nishida
Life of this patent
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Abstract
Disclosed are a winding method and structure for stator coils in which each stator coil is wound in series around a plurality of ones of coil bobbins fitted onto each stator tooth, whereby the number of coil end portions coming out from the stator coils is reduced, thereby achieving an improvement in terms of operational efficiency and reliability. In the winding method and structure for the stator coils, each stator coil is wound continuously and in series around a plurality of ones of the coil bobbins to form a series winding stator coil body, with a pair of coil ending portions coming from the ends of the series winding stator coil body.
Claims5
A stator coil winding method in which a first plurality of coil bobbins having stator coils are provided on a stator body formed in a ring-like configuration and having a plurality of outwardly protruding stator teeth and in which the stator body is mounted to a cylindrical stator yoke, comprising:
- mounting a second plurality of coil bobbins, representing a portion of said first plurality of coil bobbins, on a jig in a spaced-apart relationship;
- winding a wire continuously and in series around said second plurality of coil bobbins to form a series winding bobbin assembly having a pair of coil end portions;
- and
- mounting said series winding bobbin assembly to a stator coil body,
- wherein each coil bobbin is mounted to a respective stator tooth on said stator body.
A stator coil winding structure comprising:
- a stator body formed generally in a ring-like configuration and having a plurality of outwardly protruding stator teeth, said body being adapted for mounting to a cylindrical stator yoke;
- a first plurality of coil bobbins, each having a stator coil wound thereon and being mounted on a respective one of said stator teeth, said first plurality of coil bobbins comprising a plurality of stator coil assemblies,
- wherein the structure of each stator coil assembly is formed by winding a stator coil around a second plurality of coil bobbins, comprising a portion of said first plurality of coil in series and continuously, and
- wherein each of the plurality of stator coil assemblies has a pair of coil end portions.
Dependencies are inferred from the claim text.