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    • 8. 发明申请
    • Magnetic axial bearing and a spindle motor having this kind of magnetic axial bearing
    • 磁轴向轴承和具有这种磁轴向轴承的主轴电机
    • US20090146515A1
    • 2009-06-11
    • US12315299
    • 2008-12-02
    • Vladimir V. PopovMartin BauerGuido SchmidStefan Schwamberger
    • Vladimir V. PopovMartin BauerGuido SchmidStefan Schwamberger
    • F16C39/06
    • F16C39/063F16C17/02F16C17/026F16C32/0402F16C32/0419F16C33/107F16C33/74F16C2370/12H02K5/1675H02K7/085H02K7/09
    • The invention relates to a magnetic axial bearing for taking up axial forces that act on a rotor component that is rotatably supported about a rotational axis with respect to a stator component. The bearing comprises a first bearing part consisting of at least one permanent magnet and at least two flux guide elements associated with the permanent magnet that are disposed on opposing end faces of the permanent magnet and aligned substantially radial and perpendicular to the rotational axis, and a second bearing part consisting of at least two flux guide elements that are disposed at a mutual spacing to one another and aligned substantially radial and perpendicular to the rotational axis, each flux guide element of the second bearing part being associated with a flux guide element of the first bearing part and lying directly opposite the latter in a radial direction and separated from it by an air gap. The invention further describes a spindle motor having a magnetic axial bearing of this kind, used, for example, for driving a hard disk drive.
    • 本发明涉及一种用于承受作用在转子部件上的轴向力的磁性轴向轴承,所述转子部件相对于定子部件围绕旋转轴线可旋转地支撑。 轴承包括由至少一个永磁体和与永磁体相关联的至少两个磁通引导元件组成的第一轴承部分,该磁通引导元件设置在永磁体的相对端面上,并基本上径向并垂直于旋转轴线排列, 第二轴承部分由至少两个磁通引导元件组成,所述至少两个磁通引导元件彼此相互间隔设置并基本上径向并垂直于旋转轴线排列,第二轴承部分的每个磁通引导元件与 第一轴承部分并且在径向方向上与后者直接相对并且通过气隙与其分离。 本发明还描述了一种具有这种磁轴向轴承的主轴电动机,例如用于驱动硬盘驱动器。