| 摘要 |
A method of rapidly assembling the rotor ( 22 ) of an external-rotor motor ( 20 ) onto a bearing support tube ( 70 ) and in a predetermined axial position relative to the latter, includes the steps of: beginning at a rotor cup portion ( 24 ) of the rotor ( 22 ), mounting on a rotor shaft ( 28 ): a compression spring ( 48 ), a retaining washer ( 50 ), and a plurality of rolling bearings ( 52, 60 ); then pressing into the bearing support tube ( 70 ), by means of a pressing-in force (K), the rotor ( 24 ), with the elements mounted thereon, the compression spring ( 48 ) being compressed so that the rotor cup presses the washer ( 50 ) into the tube ( 70 ); subsequently removing the pressing-in force (K), and displacing the rotor shaft ( 28 ) by means of the compression spring ( 48 ) within the bearings ( 52, 60 ) so that the rotor ( 24 ) assumes the desired predetermined axial position, relative to the tube ( 70 ).
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