ROTOR HAVING LOBED BORE AND METHOD OF ASSEMBLING SAME
First Claim
Patent Images
1. A rotor for a motor, the rotor comprising:
- a plurality of laminations, each lamination including a central opening having an outer surface, the outer surface defined by a continuous non-circular curve; and
a shaft including a cylindrical portion configured to engage the outer surface, the cylindrical portion sized to define an interference fit between the cylindrical portion and at least a portion of the outer surface.
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Abstract
A rotor for a motor includes a plurality of laminations. Each lamination includes a central opening having an outer surface. The outer surface is defined by a continuous non-circular curve. A shaft includes a cylindrical portion configured to engage the outer surface. The cylindrical portion is sized to define an interference fit between the cylindrical portion and at least a portion of the outer surface.
38 Citations
22 Claims
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1. A rotor for a motor, the rotor comprising:
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a plurality of laminations, each lamination including a central opening having an outer surface, the outer surface defined by a continuous non-circular curve; and a shaft including a cylindrical portion configured to engage the outer surface, the cylindrical portion sized to define an interference fit between the cylindrical portion and at least a portion of the outer surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A rotor for a motor, the rotor comprising:
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a plurality of laminations, each lamination including a central opening having an outer surface, the outer surface defined by a continuous sinusoidal curve that defines a first quantity of peaks; and a shaft including a cylindrical portion configured to engage the first quantity of peaks, the cylindrical portion sized to define an interference fit between the cylindrical portion and the first quantity of peaks. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A rotor for a motor, the rotor comprising:
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a shaft including a cylindrical portion and defining a rotational axis; a first lamination including a central opening defined by a first continuous non-circular curve that defines a first quantity of peaks, the first lamination coupled to the shaft; a second quantity of interlock members formed as part of the first lamination, the second quantity being different from the first quantity; a second lamination including a central opening defined by a second continuous non-circular curve that defines a third quantity of peaks, the third quantity being equal to the first quantity; and a fourth quantity of interlock members formed as part of the second lamination, the fourth quantity being equal to the second quantity, the second lamination coupled to the first lamination and the shaft such that each of the second quantity of interlock members is aligned with one of the fourth quantity of interlock members along the rotational axis, and none of the first quantity of peaks is aligned with one of the third quantity of peaks. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification