×

Stator for electric rotating machine and method of manufacturing same

  • US 8,779,643 B2
  • Filed: 07/16/2010
  • Issued: 07/15/2014
  • Est. Priority Date: 07/17/2009
  • Status: Active Grant
First Claim
Patent Images

1. A stator for an electric rotating machine, the stator comprising:

  • a hollow cylindrical stator core having a longitudinal axis and a plurality of slots that are formed in a radially inner surface of the stator core and spaced in a circumferential direction of the stator core; and

    a stator coil formed of a plurality of electric wires mounted on the stator core,whereineach of the electric wires forming the stator coil has only first, second, third, . . ., nth sequential in-slot portions and only first, second,. . ., (n−

    1)th sequential turn portions, where n is an integer not less than 4,the first to the nth in-slot portions are sequentially received in p of the slots of the stator core, where p is an integer not greater than n,the first to the (n−

    1)th turn portions are alternately located on opposite axial sides of the stator core outside of the slots to connect corresponding adjacent pairs of the first to the nth in-slot portions,all of the radial distances of the first to the nth in-slot portions from the axis of the stator core successively decrease,for all of the electric wires forming the stator coil, the first in-slot portions are located most radially outward and the nth in-slot portions are located most radially inward in the slots of the stator core, and all of the electric wires are offset from one another in the circumferential direction of the stator core.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×