SPINDLE MOTOR
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United States of America Patent
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N/A
Issued Date -
Dec 5, 2013
app pub date -
May 29, 2013
filing date -
May 29, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A spindle motor having a turntable is disclosed, the spindle motor including a rotation shaft, a stator including a coil wound with a core arranged at a periphery of the rotation shaft, a rotor including a yoke coupled to the rotation shaft and a magnet arranged at an inner surface of the yoke, and a turn table coupled to the rotor and formed with a groove accommodating a ball, wherein a ratio (Yr/Bd) of a radius (Yr) between a center of the rotation shaft and an external surface of the yoke relative to a diameter (Bd) of the ball to reduce vibration of the rotor and the turn table is in the range of 4.6˜4.9.
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