Brushless motor and a control circuit thereof
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United States of America Patent
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-
Feb 18, 1997
Grant Date -
N/A
app pub date -
Mar 16, 1994
filing date -
Mar 19, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A brushless motor includes a stationary member; a rotating member rotatably supported with respect to the stationary member; a stator provided in the stationary member and provided with a stator coil for generating current magnetic field under an exciting state; and a rotor magnet provided in the rotating member for obtaining a revolutionary power due to an electromagnetic mutual effect with the current magnet field of the stator coil. The rotor magnet is formed such that segment-shaped magnets are placed annularly with predetermined gaps circumferentially. The gaps are filled with a magnetic resin material.
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