Method of fabricating a salient pole electronically commutated motor

A method of fabricating a salient pole electronically commutated motor with the motor having a generally annular yoke section, an outer circumferential surface on the yoke section, a set of insulated conductors, a set of split insulation bobbins each including an opening therethrough, a pair of generally opposite end flanges, and a parting section intersecting the opening and the opposite end flanges, respectively, and a set of salient pole pieces each including an intermediate section, a generally arcuate tip section extending generally laterally from the intermediate section and a base section extending generally laterally beyond the intermediate section in spaced apart relation with the tip section, the method comprising the steps of:

• spreading the split insulation bobbins apart generally along the parting sections thereof and closing the split insulation bobbins in insulating relation about the salient pole pieces, respectively;
• placing the openings through the split insulation bobbins about the intermediate sections of the salient pole pieces and arranging the opposite end flanges on the split insulation bobbins at least adjacent the base sections and the arcuate tip sections of the salient pole pieces, respectively, at least during the closing step;
• winding at least one conductor turn of the insulated conductors about the split insulation bobbins disposed on the salient pole pieces, respectively, thereby to define a set of concentrated winding stages for the salient pole electronically commutated motor;
• and
• securing only the base sections of the respective salient pole pieces to only the yoke section at least adjacent its outer circumferential surface with the securement defining the only means for retaining the salient pole pieces against displacement from the yoke section.