Electric motor and a method of assembling same
AssigneeSteering Solutions IP Holding Corporation
InventorsZhao Wan, Mojtaba Bahrami Kouhshahi, Robert W. Long, Kenneth P. Webber, Jr., Jeffrey T. Klass
Life of this patent
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Abstract
An electric motor assembly comprising a stator having a plurality of stator lamination sheets. Each of the stator lamination sheets includes an annular body and a plurality of stator teeth extending radially inwardly from the annular body to an opening. A rotor is located in the opening. Each of the stator teeth defining a pocket with a dampening element located in the pocket. The dampening element comprises a material that is viscoelastic. The pocket and dampening element are located in a location of the stator tooth that has less magnetic flux than an adjacent area of the stator tooth.
Claims14
A stator tooth for an electric motor comprising:
- a base portion;
- a body portion that extends radially inwardly from the base portion;
- an interface portion extending from the body portion opposite the base portion, the interface portion defining a surface adjacent to a provided rotor;
- a pocket defined by the stator tooth;
- and
- a dampening element located in the pocket,
- wherein the pocket includes a top edge and a bottom edge, the top edge located near an outer edge of the base portion opposite the body portion, the bottom edge extending towards the body portion, wherein the top edge is flat and the bottom edge is rounded.
A stator for an electric motor comprising:
- a plurality of stator lamination sheets;
- each of the plurality of stator lamination sheets including an annular body and a plurality of stator teeth extending radially inwardly from the annular body to an opening for placing a provided rotor;
- at least one of the plurality of stator teeth defining a pocket;
- and
- a dampening element located in the pocket,
- wherein the pocket includes a top edge and a bottom edge, the top edge located near an outer edge of a base portion of the at least one of the plurality of stator teeth, the bottom edge extending towards a body portion of the at least one of the plurality of stator teeth, wherein the top edge is flat and the bottom edge is rounded.
An electric motor assembly comprising:
- a stator including a plurality of stator lamination sheets;
- each of the plurality of stator lamination sheets including an annular body and a plurality of stator teeth extending radially inwardly from the annular body to an opening;
- a rotor located in the opening;
- at least one of the plurality of stator teeth defining a pocket;
- and
- a dampening element located in the pocket,
- wherein the pocket includes a top edge and a bottom edge, the top edge located near an outer edge of a base portion of the at least one of the plurality of stator teeth, the bottom edge extending towards a body portion of the at least one of the plurality of stator teeth, wherein the top edge is flat and the bottom edge is round.
Dependencies are inferred from the claim text.