초록 ▼

A method for assembling an electric motor (10) having a stator (34) and a rotor (32). It is endeavored to keep the air gap (38) as narrow as possible, in order to achieve good efficiency of the motor (10). However, component tolerances and assembly errors require generous dimensioning in order to av

A method for assembling an electric motor (10) having a stator (34) and a rotor (32). It is endeavored to keep the air gap (38) as narrow as possible, in order to achieve good efficiency of the motor (10). However, component tolerances and assembly errors require generous dimensioning in order to avoid possible contact between the stator (34) and the rotor (32). To improve the accuracy of assembly, is proposed, during the insertion into one another of the rotor (32) and the stator (34), a centering aid (40, 42) is introduced into the air gap (38) at at least three points, the rotor (32) and the stator (34) are subsequently fixed in relation to one another and finally the centering aid (40, 42) is pulled out through openings (48) in the motor housing (20, 30).

대표청구항 ▼

1. 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

1. 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). 2. The method as claimed in claim 1, wherein, for positional fixing, the stator (34) is braced between two housing halves (26, 30), in which a motor shaft (12) is mounted with the rotor (32) seated thereon. 3. The method as claimed in claim 1, wherein said radial forces are produced by flexible elements (56), belonging to the centering aid (54), between said rotor (32) and the stator (34).