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    • 9. 发明授权
    • Information processing apparatus
    • 信息处理装置
    • US5610889A
    • 1997-03-11
    • US560369
    • 1995-11-17
    • Masaru IshiiKoichi Nagai
    • Masaru IshiiKoichi Nagai
    • G11B17/03G11B17/04G11B17/043G11B25/04G11B33/02
    • G11B17/0434
    • An optical disk apparatuses includes a turntable with a bearing surface, and a spindle motor for rotating the turntable. The spindle shaft has a cylindrical first shaft having an upper end flush with the bearing surface, and a second shaft having an upper end portion and arranged in the first shaft to be slidable between an engaging position in which the upper end portion projects from the upper end of the first shaft to engage a center hole of an optical disk placed on the bearing surface and a depressed position in which the upper end portion is recessed from the upper end of the first shaft to be disengaged from the optical disk. The second shaft is moved by a spindle moving mechanism from the first position to the second position when the optical disk is to be loaded on and unloaded from the turntable.
    • 光盘装置包括具有支承面的转台和用于转动转台的主轴电动机。 主轴具有圆柱形的第一轴,其具有与支承表面齐平的上端,第二轴具有上端部,并且布置在第一轴中,以在上端部从上部突出的接合位置之间滑动 第一轴的端部接合放置在轴承表面上的光盘的中心孔,以及凹部位置,其中上端部从第一轴的上端凹入以从光盘脱离。 当光盘从转台上装载并卸载时,第二轴由主轴移动机构从第一位置移动到第二位置。