Patent ID: 7049726
Filing Date: 2006-05-23
Classification: H02K,Y10T

Abstract:
1. A stator for dynamo-electric machine having a rotor disposed inside the stator, said stator comprising a core comprising an inner ring core and an outer ring core, wherein said inner ring core includes a plurality of axially laminated magnetic plate members which are bent to form a ring shape, and a plurality of coils; said plurality of laminated magnetic plate members have one pair of end faces contacting each other, and inner circumferential portion of said inner ring includes a plurality of teeth and slots located between said teeth; said plurality of coils are wound round said plurality of teeth adjacent each other between a bottom part of one of said slots and an upper part of other of said slots, and are disposed in such a manner as being radially overlapped on each other; said outer ring core is cylindrical, formed of a magnetic material, fitted on an outer circumferential surface of said inner ring core and holds said inner ring core; said outer ring core comprises at least one magnetic member having a ring shape and a one-piece construction, and said outer ring core and said inner ring core constitute a yoke; and a width of the teeth where the end faces of the laminated magnetic plate members contact each other is larger than a width of the other teeth.