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US 2003/0111929 A1Published application
Metal brush box with heat sink fins for decreasing brush temperature in an electric motor or alternator
AssigneeValeo Electrical Systems, Inc.
InventorsTao Hong, John R. Savage
Life of this patent
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Abstract
A system and method for reducing brush temperature associated with an electric motor or alternator is disclosed as having at least one brush box for housing at least one brush biased radially toward an opening toward the commutator. The brush boxes have at least one or a plurality of heat sink fins associated therewith for thermally conducting heat away from the brushes.
Claims25
An electric motor or alternator comprising:
- a stator comprising pairs of magnets or coils for providing an electromagnetic field;
- a rotor mounted on an armature shaft and rotatably positioned in said stator, said rotor comprising a commutator positioned on an armature shaft;
- a brush holder plate positioned around said commutator and comprising a plurality of brush boxes each capable of receiving at least one brush;
- and
- said brush box comprising a heat sink for dissipating heat generated by said brushes to lower a brush temperature.
2 more elements
A method for decreasing brush temperature of an electric motor or alternator comprising the steps of:
- providing a motor or alternator having a housing comprising a stator comprising at least two magnets or coils for providing an electromagnetic field;
- providing a rotor mounted on an armature shaft, said rotor comprising a commutator positioned on an armature shaft;
- providing a brush holder plate having a plurality of brush boxes each capable of receiving at least one brush;
- and
- providing a heat sink on said brush box for dissipating heat generated by said brush.
2 more elements
A brush retainer comprising:
- a brush holder plate having an aperture therethrough for receiving a commutator, said brush holder further comprising a plurality of brush boxes each having at least one brush therein for contacting said commutator when said commutator is positioned in said aperture;
- and said brush holder comprising a heat sink.
Dependencies are inferred from the claim text.