Electric machine having vibration attenuating stator laminations
AssigneeFord Global Technologies, LLC
InventorsChristopher Wolf, Franco Leonardi, Michael W. Degner
Life of this patent
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Abstract
An electric machine includes a stator formed from a plurality of stacked laminations and defining a center bore and a rotor disposed within the center bore. The rotor is configured to output a rotational torque in response to an input current delivered to the stator. At least one of the stacked laminations of the stator includes a pattern of perforations disposed at a yoke portion of the stator to attenuate structure-bore transmission of vibration during operation of the electric machine.
Claims20
An electric machine comprising:
- a stator formed from a plurality of stacked laminations and defining a center bore;
- and
- a rotor disposed within the center bore and configured to output a rotational torque in response to an input current delivered to the stator, wherein at least one of the stacked laminations of the stator includes a pattern of perforations disposed at a yoke portion of the stator to attenuate structure-bore transmission of vibration during operation of the electric machine.
An electric machine comprising:
- a stator formed from a stack of laminations, each of the laminations defining a pattern of perforations;
- and
- a rotor disposed within a center bore of the stator and configured to output a rotational torque in response to an input current delivered to the stator, wherein the pattern of perforations defines a series of patterned shapes disposed about a circumference of each lamination.
An electric machine comprising:
- a stator defining a center bore and configured to receive a current input, the stator including
- a first lamination defining a first pattern of perforations, and
- a second lamination adjacent the first lamination and defining a second pattern of perforations;
- and
- a rotor disposed within the center bore and configured to output a rotational torque in response to an input current delivered to the stator, wherein the first pattern of perforations is misaligned relative to the second pattern of perforations to attenuate structure-bore transmission of vibration during operation of the electric machine.
Dependencies are inferred from the claim text.