Decoupling device and method for the production of an electric motor

#The invention starts with a device for mounting an electric motor in a manner that isolates vibrations.

#Electric motors, such as those that are used in fans of heating and/or air conditioning systems in motor vehicles, are as a rule vibrationally isolated vis-à-vis the vehicle in order to avoid or reduce the transmission of structure-borne noise from the motor or the fan unit to the body and thus to the passenger compartment of the vehicle.

#Running noise from the electric motor and run-induced vibrations that are generated, e.g., by an imbalance in a fan wheel that must be driven, are transmitted as a result to a high degree to the housing and lead to the undesirable development of noise.

#Exemplary embodiments of the device in accordance with the invention for mounting an electric motor in a manner that isolates vibrations are depicted in the drawings, which will be explained in greater detail in the following description. The figures of drawings, the description thereof as well as the claims contain numerous features in combination. The person skilled in the art will also observe these features individually and combine them into additional, meaningful combinations, which are therefore also disclosed in the description.

#The drawings show:

#FIG. 1A schematic depiction of an electric motor with a device in accordance with the invention.

#FIG. 1 shows an electric motor like those used in an air conditioning fan of a motor vehicle for example.

#The electric motor 10 features a double-layer pole ring 14 that serves as a pole housing 12, on whose inner circumferential surface magnets are attached in a known manner, which serve as the stator of the electric machine 10. The pole ring 14 in this case serves as a magnetic yoke circuit of the electric motor 10. Also fastened to the pole ring 14 is a first shaft-side end shield 16 as well as a second armature-side end shield 18.

#The first end shield 16 and the second end shield 18 each feature a bearing 20 or 22 into which the shaft 24 that has a working connection with the rotor of the electric motor 10 is guided.