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    • 10. 发明授权
    • Bearing device and deflecting-scanning apparatus using the same
    • 轴承装置和使用其的偏转扫描装置
    • US06392771B1
    • 2002-05-21
    • US09092995
    • 1998-06-08
    • Taku FukitaMikio NakasugiYasuo SuzukiHideyuki MiyamotoIsshin SatoAkihiro Fukutomi
    • Taku FukitaMikio NakasugiYasuo SuzukiHideyuki MiyamotoIsshin SatoAkihiro Fukutomi
    • G02B2608
    • G02B26/121
    • A bearing device is structured to include a stator portion which includes one of a shaft and a sleeve, a rotor portion which includes the other of the shaft and the sleeve which are structured to be capable of relative rotation therebetween, a first permanent magnet mounted on the rotor portion, and a second permanent magnet mounted at a position opposed to the first permanent magnet. The rotor portion is floated up relative to the stator portion by a magnetic force working between the first permanent magnet and the second permanent magnet. The first permanent magnet is mounted on the upper end portion of the rotor portion, the second permanent magnet is mounted on the upper end portion of the stator portion, and the first permanent magnet and the second permanent magnet are provided in opposed relationship with each other in a circumferential direction perpendicular to an axial direction of the bearing device.
    • 轴承装置被构造成包括定子部分,该定子部分包括轴和套筒之一,转子部分包括被构造成能够相对于其间旋转的轴和套筒中的另一个;第一永磁体,安装在 转子部分和安装在与第一永磁体相对的位置处的第二永磁体。 转子部分通过在第一永磁体和第二永久磁铁之间工作的磁力相对于定子部分浮起。 第一永久磁铁安装在转子部分的上端部,第二永久磁铁安装在定子部分的上端部,第一永久磁铁和第二永久磁铁彼此相对设置 在垂直于轴承装置的轴向的圆周方向上。