Disc drive motor
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United States of America Patent
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-
Nov 21, 1989
Issued Date -
N/A
app pub date -
Apr 20, 1989
filing date -
Aug 27, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A disc drive motor having a rotor magnet at the internal circumference surface of a hub supporting a disk at its external circumferential surface. The rotor magnet is opposed to an internal motor stator. The hub is formed by inserting a yoke made of magnetic material almost in the shape of cup during aluminum die casting. At least a part of the internal circumference surface of the yoke is exposed and the motor magnet is fixed to the exposed part at the internal circumference surface of the yoke.
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