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US 2003/0189388 A1Published application
Axial flux motor assembly
AssigneeThe Timken Company
InventorsFukuo Hashimoto, Rao-Sheng Zhou, Mircea Gradu
Life of this patent
Estimating the term…
Abstract
A power unit assembly comprises a pair of mirrored axial flux electric motors having a common axis of rotation, each axial flux motor including a rotor disposed on a rotor shaft and at least one stator disposed in operative relationship to said rotor. A common end plate is disposed between each of said pair of axial flux electric motors to provide a common mounting structure, while an output hub is operatively coupled to each rotor shaft of the pair of mirrored axial flux electric motors. Each of the pair of mirrored axial flux electric motors is operatively configured to provide independent speed and torque to each associated output hub.
Claims30
An assembly comprising:
- an axial flux electric motor comprising a stator and a rotor;
- a rotor shaft coupled to said rotor, said rotor shaft including a shoulder portion;
- a rotor support bearing for rotationally supporting said rotor shaft;
- a driveline support for supporting a hub rotatably attached to a housing by a bearing;
- a case attached to said housing configured to support said stator and a speed reduction transmission;
- said speed reduction transmission comprising a sun element, at least two planetary elements and an outer ring element attached to said case;
- wherein said rotor shaft is coupled to said hub through said speed reduction transmission;
- wherein said rotor shaft, said speed reduction transmission, and said hub are supported solely by said rotor support bearing, said driveline support bearing and said outer ring element of the case;
- and
- wherein said shoulder portion of said rotor shaft abuts an end of said rotor support bearing such that a desired air gap is maintained between said rotor and said stator.
7 more elements
An integral axial flux induction motor comprising:
- a speed reduction transmission;
- a housing;
- a case secured to said housing;
- a stator wound with conductive windings, said stator disposed within said case;
- a rotor comprising permanent magnets, said rotor disposed adjacent said stator and coupled to said hub through said speed reduction transmission by a rotor shaft;
- a package wheel bearing assembly, said package wheel bearing assembly including two rows of tapered rollers disposed between a housing and a hub to allow said hub to rotate thereon;
- wherein said speed reduction transmission includes a sun element, at least three planetary elements and an outer ring element formed by the case;
- wherein said rotor shaft includes a shoulder portion abutting an end portion of a rotor support bearing to maintain an air gap between said rotor and said stator;
- and
- wherein said rotor shaft, said speed reduction transmission, and said hub are supported entirely by said rotor support bearing, said hub, and said outer ring element.
7 more elements
An assembly comprising:
- an axial flux electric motor comprising a pair of stators and a rotor coupled to a rotor shaft;
- a rotor support bearing configured to rotationally support said rotor shaft;
- a vehicle support comprising a hub rotatably attached to a housing by a bearing;
- a case attached to said housing, said case configured to support said pair of stators and a speed reduction transmission, said speed reduction transmission including a sun element, at least two planetary elements and an outer ring element attached to said case;
- wherein said rotor shaft is coupled to said hub through said speed reduction transmission;
- wherein said rotor shaft, said speed reduction transmission, and said hub are supported solely by said rotor support bearing, said vehicle support bearing, and said outer ring element of said case;
- and
- wherein a shoulder portion of said rotor shaft abuts an end of said rotor support bearing such that a desired air gap is maintained between said rotor and each of said pair of stators.
5 more elements
A power unit assembly comprising:
- a pair of mirrored axial flux electric motors having a common axis of rotation, each axial flux motor including a rotor disposed on a rotor shaft and at least one stator disposed in operative relationship to said rotor;
- a common end plate disposed between each of said pair of axial flux electric motors;
- an output hub operatively coupled to each rotor shaft of said pair of mirrored axial flux electric motors;
- and
- wherein each of said pair of mirrored axial flux electric motors is operatively configured to provide independent speed and torque to each output hub.
2 more elements
Dependencies are inferred from the claim text.