| 摘要 |
A disk centering apparatus includes a disk table member and a movable member. An inner circumferential portion of the disk table member is secured to an upper portion of a motor shaft. An outer circumferential portion of a greater diameter is disposed lower than an upper surface of and concentrically with the inner circumferential portion and has an upper surface for receiving a disk thereon. Connecting portions extend radially outwardly from the inner circumferential portion. The movable member includes a supported shaft portion mounted for sliding movement on the motor shaft and disposed lower than the disk table member. A guiding portion is provided adjacent an outer surface side of the supported shaft portion and includes a guiding inclined portion formed at an upper portion thereof and a diameter greater than the inner circumference portion. The movable member is biased upwardly in a direction of the motor shaft.
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