| 摘要 |
A stator core is formed of helical convolutions wound edgewise from a continuous strip of ferromagnetic material. The core is in the from of a plurality of flux rings having a plurality of spaced apart integrally formed lugs outwardly extending along an outer circumferential edge of the flux ring, where each lug has deformable edges. Pole pieces are fastened to the flux rings and each flux ring has a body portion defined by an annular front portion. The body portion has first and second arms that project laterally from the body portion and extend along a portion of the outer circumferential edge. Each pole piece is operatively secured between two adjacent lugs such that the annular front portion abuts the outer circumferential edge of the flux ring. When secured, the arms abut the corresponding deformable edges of the lug. A portion of the deformable edges of the lug are then deformed and expand to overlap the arms to wedge pole piece between the circumferential edge and the lugs.
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