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    • 10. 发明申请
    • Fluid Dynamic Bearing Apparatus and a Motor Using the Same
    • 流体动力轴承装置和使用其的电动机
    • US20070280571A1
    • 2007-12-06
    • US11587535
    • 2005-05-16
    • Fuminori SatojiRyouichi NakajimaIsao KomoriKazuo OkamuraKenichi Mitani
    • Fuminori SatojiRyouichi NakajimaIsao KomoriKazuo OkamuraKenichi Mitani
    • F16C17/10
    • F16C17/107F16C33/107F16C2370/12H02K5/163H02K5/1675
    • Assembly precision in a motor is improved and greater cost reduction is achieved. A fluid dynamic bearing apparatus 1 comprising a housing 7 and bearing sleeve 8 as fixed-side members 2, a shaft member 9 as a rotational-side member 3 having a portion 3c for mounting a rotor magnet 5, and a disk hub 10, the shaft member 9 being supported by the bearing sleeve 8 in the radial direction in a non-contact manner by the hydrodynamic effect of a lubricating oil produced in a radial bearing gap between the inner circumferential surface 8a of the bearing sleeve 8 and the outer circumferential surface 9a of the shaft member while the shaft member 9 is in rotation, the apparatus 1 comprising a disk hub 10 which is fixed on the shaft member 9 and has a portion 3c for mounting the rotor magnet 5, and the disk hub 10 being a molded resin article formed by insert-molding using the shaft member 9 as an insert piece.
    • 电机的组装精度得到提高,降低了成本。 一种流体动力轴承装置1,包括壳体7和作为固定侧构件2的轴承套筒8,作为具有用于安装转子磁体5的部分3c的旋转侧构件3的轴构件9和盘毂10, 轴构件9通过轴承套筒8的内周面8a之间的径向轴承间隙中产生的润滑油的流体动力学效应与外部的轴向套筒8在径向方向上以非接触的方式被支撑 轴构件9旋转时的轴构件的周面9a,装置1包括固定在轴构件9上并具有用于安装转子磁体5的部分3c的盘毂10,以及盘毂 10是通过使用轴构件9作为插入件通过嵌入成型形成的模制树脂制品。