Rotor for brushless motor
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United States of America Patent
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Apr 24, 2018
Issued Date -
N/A
app pub date -
Aug 21, 2014
filing date -
Aug 30, 2013
priority date (Note) -
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Abstract
A permanent magnet of a rotor core of a rotor includes a first recess and a second recess, which are formed in an outer wall to correct a dynamic balance of the rotor. The permanent magnet is a bonded magnet that is formed by molding a mixture material, which is a mixture of resin and magnetic powder. The first recess and the second recess are formed at the time of molding the permanent magnet. Furthermore, the first recess and the second recess are formed at two axial ends, respectively, of the permanent magnet.
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