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    • 4. 发明授权
    • Dynamic pressure bearing apparatus
    • 动压轴承装置
    • US06412984B2
    • 2002-07-02
    • US09733997
    • 2000-12-12
    • Hiromitsu AsaiYoichiro Sugimori
    • Hiromitsu AsaiYoichiro Sugimori
    • F16C1710
    • F16C33/107F16C17/026F16C17/107F16C2370/12G11B19/2009H02K5/1675
    • The present invention provides a dynamic pressure bearing apparatus comprising a cylindrical bearing member, and a rotary shaft disposed within a cylindrical bore of the cylindrical bearing member, and wherein the bearing member has a thrust bearing surface provided at a bottom of the cylindrical bore, a radial bearing surface provided on an inner peripheral surface of the cylindrical bearing member, and a lubricating oil reservoir provided at an opening portion of the cylindrical bore and having a diameter greater than that of the radial bearing surface, and the rotary shaft has a radial receiving surface opposed to the radial bearing surface with the interposition of a radial bearing gap, and a thrust receiving surface opposed to the thrust bearing surface, and further wherein the bearing member is closed at the bottom thereof, a dynamic pressure generating groove is formed in at least one of the radial bearing surface and the radial receiving surface, and the dynamic pressure generating groove generates a force for flowing lubricating oil between the bearing member and the rotary shaft toward the opening portion of the cylindrical bore.
    • 本发明提供一种动压轴承装置,其包括圆柱形轴承构件和设置在圆柱形轴承构件的圆柱形孔内的旋转轴,并且其中轴承构件具有设置在圆柱形孔的底部的止推轴承表面, 径向支承面,设置在圆筒状轴承部件的内周面上;以及润滑油容器,其设置于圆筒形孔的开口部,其直径大于径向支承面的直径,旋转轴具有径向接收 与径向轴承间隙相对的径向支承面相对的表面以及与止推轴承面相对的推力接收面,其特征在于,所述轴承构件在其底部封闭,动压生成槽形成在 径向轴承表面和径向接收表面中的至少一个以及动压级 倾斜槽产生用于使轴承构件和旋转轴之间的润滑油朝向圆柱孔的开口部分流动的力。