Small motor

A miniature electric motor has permanent magnets (2) mounted on an inner circumferential surface (11) of a casing (3), a rotor (4) rotatably supported in an interior (21) of the casing, and a commutator (14) of the rotor and brushes (16) which are provided in the interior of the casing and are in sl...

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Bibliographic Details
Main Authors SHIBUTANI ISAO, YOSHIMURA KAZUTOSHI, HARANO JUNICHI
Format Patent
LanguageEnglish
Published 18.06.1997
Edition6
Subjects
BASIC ELECTRIC ELEMENTS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
CURRENT COLLECTORS
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
LINE CONNECTORS
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Summary:A miniature electric motor has permanent magnets (2) mounted on an inner circumferential surface (11) of a casing (3), a rotor (4) rotatably supported in an interior (21) of the casing, and a commutator (14) of the rotor and brushes (16) which are provided in the interior of the casing and are in sliding engagement with each other. One or more organic dicarbonates (e.g. dialkyl or dialkylene carbonates) are sealed in the interior of the casing to reduce the contact resistance between the commutator and the brushes and to stabilise the motor performance whilst suppressing wear of the sliding components to prolong the service life of the motor.
Bibliography:Application Number: CN19961013430