Magnetic disc drive motor including a fixed shaft having mounted thereon a lower bearing member with a portion for mounting a rotor
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United States of America Patent
Stats
-
Feb 25, 1997
Issued Date -
N/A
app pub date -
Nov 8, 1995
filing date -
Oct 12, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic disc drive motor contains a frame; a fixed shaft mounted on the frame; a lower bearing member mounted on a lower portion of the fixed shaft, the lower bearing member being provided with a roller ring rotating about the fixed shaft, the lower bearing member being provided with a loading portion defined at one end of the roller ring; an upper bearing member mounted on the upper portion of the fixed shaft, the upper bearing member being provided with a cylindrical roller ring; and a motor including: a rotor fixed under a loading surface portion of the loading portion of the lower bearing member; and a stator disposed inside the rotor and fixed to a frame, wherein each of the roller rings is fitted in the center hole of a magnetic disc and an inner peripheral portion of the magnetic discs are loaded on the loading portion.
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