Patent ID: 7948140
Filing Date: 2011-05-24
Classification: H02K,Y10T

Abstract:
1. A stator for rotary electric machine comprising a stator core having slots, and a group of coils which are inserted into the slots; wherein: conductors that form the respective coils are covered with an insulating coating, which is removed at coil ends of the coils at one side of the stator core; the conductor of each of the coil ends on said one side of the stator core has a welding portion for connecting an adjoining coil end; the conductor of each of said coil ends has a rectangular transverse cross section that is delimited by first, second, third, and fourth flat faces; said second flat face includes a step portion; each of the coil ends is constituted by a pair of conductors closely abutting each other; the conductors of the coil ends of said one side of the stator core are abutted and welded at tips of said welding portion; the length of the first flat face between an end of said welded tips and a point to which the insulating coating is removed, differs from the length of the second flat face between said end of said welded tips and said step portion; and the point to which the insulating coating is removed differs as between adjacent faces of said conductors.