Stator, method of manufacturing stator, and outer rotor type motor

A method of manufacturing a stator comprising the steps of:

• preparing a plurality of arc-shaped segment cores in which yoke parts provided with pole teeth are connected to one another through thin wall parts and peripheries of the pole teeth are covered with insulated bobbins;
• positioning each of the segment cores with respect to a winding jig in an arc attitude having a larger curvature than that of a stator core with larger gaps between teeth edges of respective pole teeth by fitting positioning pins provided in the winging jig to groove holes provided in the yoke parts positioned at both end parts of each of the segment cores in a longitudinal direction;
• winding a coil around the pole teeth extended in a radial direction of each of the segment cores positioned in the winding jig through the insulated bobbins by using a winding machine;
• and
• expanding the segment cores in which the coil is wound to be positioned in an annular fastening jig, and fastening the segment cores to one another in an annular shape by fitting a concave part and a convex part provided at ends of the yoke parts positioned at both end parts of each segment core in the longitudinal direction.