Stator and electric motor having the same

摘要

The stator of the electric motor comprises: a stator core; tooth sections being radially extended from the stator core; an even number of slots, each of which is formed between the tooth sections; an insulator covering the tooth sections; and motor coils being wound in the slots. The insulator has guide projections, each of which corresponds to each of the tooth sections so as to guide a magnet wire. The guide projections have guide sections, each of which includes a base end part and a front end part. In each of the guide sections, a radial thickness of at least one part located in the base end part is thin, a radial thickness of the front end part is thicker than that of the base end part. The guide sections are formed in same side faces of the guide projections arranged in the circumferential direction.

主权项

1. A stator of an electric motor, comprising:
a ring-shaped stator core; a plurality of tooth sections being radially extended from the stator core; an even number of slots, each of which is formed between the tooth sections; an insulator covering the tooth sections; and a plurality of motor coils being wound on the tooth sections with the insulator and formed in the slots, wherein the insulator is formed into a ring shape and has guide projections, each of which corresponds to each of the tooth sections so as to guide a magnet wire, the guide projections respectively have guide sections, each of which includes a base end part and a front end part, in each of the guide projections, each of the guide sections comprises: a thin part, which is at least one part of the base end part and whose radial thickness is made thin; a thick part, which is a part of the front end part and whose radial thickness is thicker than that of the base end part; and a groove, which is formed, in the base end part, by a thickness difference between the thin part and the thick part, the guide sections are respectively formed in same side faces of the guide projections arranged in the circumferential direction, and a retainer projection is formed on an outer circumferential face of the thick part of the front end part of each of the guide projections.