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    • 6. 发明授权
    • Shaft supporting structure with coil spring for pressing shaft onto bearing, and optical disc apparatus including the same
    • 具有用于将轴按压到轴承上的螺旋弹簧的轴支撑结构和包括该轴的支撑结构
    • US08316388B2
    • 2012-11-20
    • US12649402
    • 2009-12-30
    • Tatsuro NishiNaohisa TanabeSeiichi MiyamotoMasakazu Ishizuka
    • Tatsuro NishiNaohisa TanabeSeiichi MiyamotoMasakazu Ishizuka
    • G11B7/00
    • G11B7/08582F16F1/123
    • The invention allows for restriction of radial and axial movements of a shaft by a simple structure. A shaft supporting structure includes a base (3) provided with a bearing (7), and a first shaft (23) arranged at the bearing (7). The shaft supporting structure further includes a helical torsion spring (4) fitted on the first shaft (23). The base (3) includes a first engagement hole (31a), and a hooked section (74) engaging with first and second arm sections (41, 42) of the helical torsion spring (4), respectively. The helical torsion spring (4) presses the first shaft (23) onto the bearing (7) in a radial direction of the shaft by an elastic force generated by engagement between the first arm section (41) and the first engagement hole (31a) of the base (3), and engagement between the second arm section (42) and the hooked section (74) of the base (3). A portion of the second arm section (42) faces an axial end face of the first shaft (23).
    • 本发明允许通过简单的结构限制轴的径向和轴向移动。 轴支撑结构包括设置有轴承(7)的基座(3)和布置在轴承(7)处的第一轴(23)。 轴支撑结构还包括安装在第一轴(23)上的螺旋扭簧(4)。 基座(3)分别包括第一接合孔(31a)和与螺旋扭力弹簧(4)的第一和第二臂部分(41,42)接合的钩形部分(74)。 螺旋扭力弹簧(4)通过第一臂部(41)和第一接合孔(31a)之间的接合产生的弹力将第一轴(23)沿着轴的径向按压到轴承(7)上, (3)的钩状部(74)与第二臂部(42)之间的卡合。 第二臂部分(42)的一部分面向第一轴(23)的轴向端面。