Patent ID: 6655003
Filing Date: 2003-12-02
Classification: H02K,Y10T

Abstract:
A method of assembling an electric motor (10) comprising the steps of: inserting a stator (34) and a rotor (32) one into another, before, during or after introducing a centering aid (62) at at least three points distributed on a circumference of an air gap between said rotor (32) and said stator (34), producing radially acting forces at said at least three points between said rotor (32) and said stator (34) when introducing the centering aid (62);subsequently fixing a predetermined portion of said stator (34) relative to said rotor (32); and finally pulling out the centering aid (62) through openings (70) provided in a housing (30) of said electric motor (10), wherein the radial forces are produced by wedge elements (66, 68) belonging to said centering aid (62), each of said wedge elements bearing on its inner side against a cylindrical surface of said rotor (32) by pressing a wedge surface (68) of the wedge element against a front edge of a cylindrical inner surface of said stator (34), wherein the wedge elements (66) have a greater radial width than the air gap (38).