Brushless direct-current motor of radial core type having a structure of double rotors and method for making the same
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United States of America Patent
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Apr 15, 2008
Grant Date -
Mar 30, 2006
app pub date -
Nov 18, 2005
filing date -
Jun 26, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of manufacturing a radial core type double rotor brushless direct-current motor is provided. A double rotor structure is employed with inner and outer rotors which are doubly disposed such that a stator core is completely divided. A rotational shaft is rotatably mounted on a housing of an apparatus, cylindrical inner and outer yokes are rotatably mounted on the center of the housing, inner and outer rotors including a number of magnets which are mounted with opposing polarities on the outer surface of the inner yoke and the inner surface of the outer yoke, and a number of cores assemblies are installed between the inner and outer rotors in which a number of coils are wound around a number of division type cores, respectively.
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