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    FLUID DYNAMIC BEARING DEVICE
    1.
    发明申请
    FLUID DYNAMIC BEARING DEVICE 有权
    流体动力轴承装置

    公开(公告)号：US20130272634A1

    公开(公告)日：2013-10-17

    申请号：US13976816

    申请日：2012-01-06

    申请人： Hiromichi Kokumai ,  Kazuyoshi Harada ,  Isao Komori

    发明人： Hiromichi Kokumai ,  Kazuyoshi Harada ,  Isao Komori

    IPC分类号： F16C32/06

    CPC分类号： F16C32/06 ,  F16C17/026 ,  F16C33/107 ,  F16C2370/12

    摘要： A fluid dynamic bearing device (1), comprising a dynamic pressure generating groove region (B) being provided on an inner peripheral surface (3a) of a bearing member (3), which forms a radial bearing gap, the region (B) comprising: a first region (B1) for generating a fluid dynamic pressure when the bearing member (3) and a shaft member (2) are rotated relative to each other in a forward direction; and a second region (B2) for generating a fluid dynamic pressure when the bearing member (3) and the shaft member (2) are rotated relative to each other in a reverse direction. A portion of the region (B), corresponds to an end portion on an open-to-air side of the radial bearing gap, comprises an annular projecting portion (6) provided closer to the shaft member (2) with respect to a groove bottom of each of the plurality of dynamic pressure generating grooves (4).

    摘要翻译： 一种流体动力轴承装置（1），包括形成径向轴承间隙的轴承构件（3）的内周面（3a）上的动压产生槽区域（B），所述区域（B）包括 ：当所述轴承构件（3）和轴构件（2）沿向前方向相对于彼此旋转时产生流体动压的第一区域（B1） 以及用于当轴承构件（3）和轴构件（2）相对于彼此相反地旋转时产生流体动压的第二区域（B2）。 所述区域（B）的一部分对应于所述径向轴承间隙的空对空侧的端部，包括相对于所述轴构件（2）更靠近所述轴构件（2）设置的环形突出部分（6） 所述多个动压产生槽（4）中的每一个的底部。

    Fluid dynamic bearing device
    2.
    发明授权
    Fluid dynamic bearing device 有权
    流体动力轴承装置

    公开(公告)号：US08864381B2

    公开(公告)日：2014-10-21

    申请号：US13976816

    申请日：2012-01-06

    申请人： Hiromichi Kokumai ,  Kazuyoshi Harada ,  Isao Komori

    发明人： Hiromichi Kokumai ,  Kazuyoshi Harada ,  Isao Komori

    IPC分类号： F16C32/06 ,  F16C17/02 ,  F16C33/10

    CPC分类号： F16C32/06 ,  F16C17/026 ,  F16C33/107 ,  F16C2370/12

    摘要： A fluid dynamic bearing device (1), comprising a dynamic pressure generating groove region (B) being provided on an inner peripheral surface (3a) of a bearing member (3), which forms a radial bearing gap, the region (B) comprising: a first region (B1) for generating a fluid dynamic pressure when the bearing member (3) and a shaft member (2) are rotated relative to each other in a forward direction; and a second region (B2) for generating a fluid dynamic pressure when the bearing member (3) and the shaft member (2) are rotated relative to each other in a reverse direction. A portion of the region (B), corresponds to an end portion on an open-to-air side of the radial bearing gap, comprises an annular projecting portion (6) provided closer to the shaft member (2) with respect to a groove bottom of each of the plurality of dynamic pressure generating grooves (4).

    摘要翻译： 一种流体动力轴承装置（1），包括形成径向轴承间隙的轴承构件（3）的内周面（3a）上的动压产生槽区域（B），所述区域（B）包括 ：当所述轴承构件（3）和轴构件（2）沿向前方向相对于彼此旋转时产生流体动压的第一区域（B1） 以及用于当轴承构件（3）和轴构件（2）相对于彼此相反地旋转时产生流体动压的第二区域（B2）。 所述区域（B）的一部分对应于所述径向轴承间隙的空对空侧的端部，包括相对于所述轴构件（2）更靠近所述轴构件（2）设置的环形突出部分（6） 所述多个动压产生槽（4）中的每一个的底部。