Patent ID: 6028378
Filing Date: 2000-02-22
Classification: H02K

Abstract:
An electric motor with a multi-pole rotor having an axis and defining rotor slots and with a multi-pole stator having poles and magnets, which stator is accommodated in a housing wherein the housing includes a detachable casing of sound-insulating material and the poles of which stator extend parallel to the direction of the rotor axis while the rotor slots run helically in respect of the rotor axis, characterized in that the stator magnets are connected with the inside wall of the housing by means of gluing, in that the housing features a sound-insulating wall thickness, and in that the helix angle of the rotor slots is 8 to 20.degree., wherein the combination of gluing the stator magnet, the sound-insulating wall thickness, and the helix angle minimizes noise during operation and wherein the housing is disposed radially outward relative to the poles of the stator.