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Coil assembly of rotating electrical machinery and method for producing the same, and stator of rotating electric machinery using the same coil assembly

  • US 20010019234A1
  • Filed: 02/06/2001
  • Published: 09/06/2001
  • Est. Priority Date: 02/07/2000
  • Status: Active Grant
First Claim
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1. A coil assembly of rotating electrical machinery, which is mounted in a plurality of slots formed on the circumferential surface of an iron core at appointed pitches P, having a plurality of coil combinations, in which the respective coil combinations comprises a combination of a first coil member and a second coil member;

  • wherein each of said first coil member and second coil member includes;

    a plurality of first linear portions disposed at pitches equal to “

    N”

    times (“

    N”

    is any natural number) said pitches P and respectively inserted in one of said plurality of slots;

    a plurality of second linear portions disposed at pitches equal to “

    N”

    times said pitches P, positioned at the middle of said respective first linear portions and inserted into one of said plurality of slots;

    a plurality of first turning portions for coupling said respective first linear portions with said respective second linear portions adjacent to one side of said respective first liner portions at one end side of said slots; and

    a plurality of second turning portions for coupling said respective first linear portions with said respective second linear portions adjacent to other side of said respective first liner portions at the other end side of said slots;

    wherein said respective first linear portions, first turning portions, second linear portions and second turning portions are formed so as to be continued to each other by one strip member; and

    said first coil member and second coil member are combined so that in an appointed slot of said plurality of slots, the first linear portion of said first coil members is located at the inner layer side and the second linear portion of said second coil members is located at the outer layer side, and, in a slot separated by “

    N”

    slots from said appointed slot, the first linear portion of said second coil member is located at the inner layer side and the second linear portion of said first coil member is located at the outer layer side.

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