Patent ID: 6208059
Filing Date: 2001-03-27
Classification: H02K

Abstract:
A rotor for an electric machine, the rotor comprising:a rotor body having a plurality of axially extending, circumferentially spaced slots therein;at least one winding conductor disposed in each said slot; anda retainer located in each said slot radially outwardly of said at least one winding conductor for limiting radial outward movement of said at least one winding conductor;wherein each retainer has, in lateral cross-section, a radially inwardly presented concave surface and a radially outwardly presented convex surface, said convex surface and said concave surface having their centres of curvature spaced apart such that the thickness of the retainer in its central region exceeds the thickness of the retainer in its marginal regions, and said concave inner surface of said retainer co-operates with said at least one winding conductor to locate said at least one winding conductor in a predetermined position in its respective slot.