Insulated code stud for rotor and stator laminations
First Claim
1. A dynamoelectric machine comprising a stator and a rotor, and at least one of the stator and rotor having a core structure comprising:
- a plurality of magnetic laminations spaced axially along the core structure;
a plurality of through holes passing axially through the laminations;
an insulated core stud passing through each of the through holes, the insulated core stud comprising opposing ends, a central shaft portion, and a first layer of heat shrinkable tubular insulation shrunk fit onto and covering at least a portion of the central shaft portion of the core stud that passes through the laminations; and
, nuts secured to the opposing ends of the insulated core studs whereby the nuts and core studs provide axial tightness of the core structure.
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Accused Products
Abstract
An insulated core stud for use in the core structure of at least one of a stator and a rotor of a dynamoelectric machine is adapted to pass through holes contained in laminations of the core structure. The insulated core stud has a central portion and a first layer of heat shrinkable tubular insulation shrunk fit onto and covering at least the central portion of the core stud that passes through the laminations. One or more additional layers of heat shrinkable tubular insulation are shrunk fit onto at least a portion of the first layer of insulation that passes through the laminations. These second layers provide mechanically protection. to the underlying layers of insulation against breaks occurring in the electrical insulation when the laminations and core studs are assembled into the core structure.
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Citations
13 Claims
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1. A dynamoelectric machine comprising a stator and a rotor, and at least one of the stator and rotor having a core structure comprising:
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a plurality of magnetic laminations spaced axially along the core structure;
a plurality of through holes passing axially through the laminations;
an insulated core stud passing through each of the through holes, the insulated core stud comprising opposing ends, a central shaft portion, and a first layer of heat shrinkable tubular insulation shrunk fit onto and covering at least a portion of the central shaft portion of the core stud that passes through the laminations; and
,nuts secured to the opposing ends of the insulated core studs whereby the nuts and core studs provide axial tightness of the core structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An insulated core stud for use in the core structure of at least one of a stator and a rotor of a dynamoelectric machine having a plurality of magnetic laminations spaced axially along the core structure and a plurality of through holes passing axially through the laminations, the insulated core stud being adapted to pass through each of the through holes and comprising:
a central shaft portion and a first layer of heat shrinkable tubular insulation shrunk fit onto and covering at least a portion of the central shaft portion of the core stud that passes through the laminations. - View Dependent Claims (10, 11, 12, 13)
Specification