Patent ID: 8302286
Filing Date: 2012-11-06
Classification: H02K,Y10T

Abstract:
1. A method for manufacturing a stator winding, which has a plurality of slot conductor parts accommodated in a plurality of slots of a stator core and a plurality of coil end parts connecting the slot conductor parts, the slot conductor parts being located in radial locations which are alternately displaced in an inner side and outer side manner along a circumferential direction, the method comprising: a winding step which forms a helical shape winding assembly by winding a conductor on a bobbin; and an expanding step which deforms the winding assembly into a shape of the stator winding by deforming in a radial direction of the helical shape, and wherein the stator winding is a wave winding, and wherein the coil end part has inclined parts and a top part, and wherein the conductor has a rectangular shape in cross section, and wherein the winding step rotates the conductor itself in a twisted shape, and wherein the expanding step rotates the conductor in a reverse, direction to undo the twisted shape.