DISC DRIVING DEVICE AND METHOD FOR MANUFACTURING THE SAME
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United States of America Patent
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-
N/A
Issued Date -
Jul 29, 2010
app pub date -
Oct 9, 2008
filing date -
Oct 15, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A disc driving device includes a rotor assembly including a cylindrical rotor frame, a magnet arranged inside the rotor frame concentrically therewith so as to form a cylindrical space, a shaft fixed at one end thereof with the center hole of the shaft holder formed at the rotation center of the rotor frame, and a bearing for supporting the rotor assembly. The center hole of the shaft holder includes a small-diameter portion at the bottom thereof in the axial direction of the shaft, and an inclined portion which is formed above the small-diameter portion in such a manner as to be tapered and expanded upward in the axial direction. The shaft holder and the shaft have a void therebetween, which is filled with ultraviolet curing adhesive so as to form an adhesive fastening portion.
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