Coating material for an armature coil of an electrical motor
First Claim
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1. An armature for an electrical motor comprising:
- an iron armature core;
a copper armature coil wound about the iron armature core; and
a resin composition impregnated on the armature core with the copper armature coil wound thereon to fix the armature coil to the armature core, the resin composition having a coefficient of thermal expansion chosen to be between the coefficients of thermal expansion for iron and copper.
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Abstract
A composition for the copper armature coil of a electric motor which can withstand crack generation due to great temperature differentials by setting the coefficient of thermal expansion of the composition to a value between the coefficients of thermal expansion of both iron and copper.
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Citations
7 Claims
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1. An armature for an electrical motor comprising:
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an iron armature core; a copper armature coil wound about the iron armature core; and a resin composition impregnated on the armature core with the copper armature coil wound thereon to fix the armature coil to the armature core, the resin composition having a coefficient of thermal expansion chosen to be between the coefficients of thermal expansion for iron and copper. - View Dependent Claims (5, 6, 7)
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2. A method for manufacturing an armature for an electrical motor comprising the steps of:
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fixing a copper armature coil to an iron armature core with a resin composition; and setting a coefficient of thermal expansion of the resin composition chosen to be between coefficients of thermal expansion for copper and iron. - View Dependent Claims (3, 4)
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Specification