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    • 10. 发明申请
    • FLUID DYNAMIC BEARING SYSTEM AND A SPINDLE MOTOR HAVING THIS KIND OF BEARING SYSTEM
    • 流体动力轴承系统和具有这种轴承系统的主轴电机
    • US20110285231A1
    • 2011-11-24
    • US13104205
    • 2011-05-10
    • Thilo RehmMartin Bauer
    • Thilo RehmMartin Bauer
    • F16C32/06H02K7/08
    • G11B19/2036F16C17/107F16C33/103F16C33/107F16C33/745F16C2370/12H02K5/1675
    • The invention relates to a fluid dynamic bearing system having a bearing bush and a shaft that are rotatable with respect to one another about a common rotational axis and form a bearing gap filled with bearing fluid between associated bearing surfaces. The bearing surfaces form at least one fluid dynamic radial bearing. A rotor component is disposed on the shaft. A stopper ring is disposed on the shaft or on the rotor component and adjoins the bearing bush, wherein a gap is formed between the mutually facing surfaces of the bearing bush and the stopper component that is filled with a bearing fluid and connected to the bearing gap and extends substantially in a radial direction. According to the invention, the surfaces of the bearing bush and/or the stopper component are formed such that the gap is tapered, narrowing radially outwards. Moreover, a recirculation channel may be provided in the bearing bush that connects a gap region between the bearing gap and the sealing gap radially outside the axial bearing to a gap region radially outside the stopper component.
    • 本发明涉及一种具有轴承衬套和轴的流体动力轴承系统,所述轴承衬套和轴可相对于彼此围绕公共旋转轴线旋转并形成在相关联的轴承表面之间填充有轴承流体的轴承间隙。 轴承表面形成至少一个流体动态径向轴承。 转子部件设置在轴上。 止动环设置在轴上或转子部件上并与轴承衬套相邻,其中在轴承衬套的相互面对的表面和填充有轴承流体的止动部件之间形成有间隙,并连接到轴承间隙 并且基本上在径向方向上延伸。 根据本发明,轴承衬套和/或止动部件的表面形成为使得间隙渐缩,径向向外变窄。 此外,可以在轴承衬套中设置再循环通道,该轴承衬套将轴承间隙和轴向轴承径向外侧的密封间隙之间的间隙区域连接到止动部件的径向外侧的间隙区域。