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    Fluid dynamic bearing apparatus
    1.
    发明授权
    Fluid dynamic bearing apparatus 有权
    流体动力轴承装置

    公开(公告)号：US08356938B2

    公开(公告)日：2013-01-22

    申请号：US11911041

    申请日：2006-03-20

    申请人： Kazuto Shimizu ,  Toshiyuki Mizutani ,  Masaharu Hori

    发明人： Kazuto Shimizu ,  Toshiyuki Mizutani ,  Masaharu Hori

    IPC分类号： F16C17/00 ,  F16C33/00

    CPC分类号： F16C33/107 ,  F16C17/107 ,  H02K7/085 ,  Y10T29/49639

    摘要： A fluid dynamic bearing apparatus includes shaft member 2, housing 7, sleeve portion 8, and sealing portions 9, 10. The housing 7 includes a straight cylindrical inner circumferential surface with a constant diameter and openings at both axial ends thereof. The sleeve portion 8 is provided separately from the housing 7 and fixed to the inner circumferential surface of the housing 7. A radial bearing gap is formed between the inner circumferential surface 8a of the sleeve portion 8 and the outer circumferential surface 2a of the shaft member 2 , and thrust bearing gaps are formed between the end faces 9b, 10b of the sealing portions 9, 10 and the end faces 8b, 8c of the sleeve portion 8 opposing these to support the shaft member 2 in a non-contact manner in the radial direction and in the thrust direction by the hydrodynamic effect of a lubricating oil produced in each bearing gap.

    摘要翻译： 流体动力轴承装置包括轴构件2，壳体7，套筒部分8和密封部分9,10。壳体7包括具有恒定直径的直圆柱形内圆周表面和在其两个轴向端处的开口。 套筒部8与壳体7分开设置并固定在壳体7的内周面上。在套筒部8的内周面8a与轴构件的外周面2a之间形成径向轴承间隙 如图2所示，并且在密封部分9,10的端面9b，10b与套筒部分8的相对的端面8b，8c之间形成推力轴承间隙，以在非接触的方式支撑轴构件2 径向和沿推力方向由在每个轴承间隙中产生的润滑油的流体动力学效应。

    FLUID DYNAMIC BEARING APPARATUS
    2.
    发明申请
    FLUID DYNAMIC BEARING APPARATUS 有权
    流体动力轴承装置

    公开(公告)号：US20090279817A1

    公开(公告)日：2009-11-12

    申请号：US11911041

    申请日：2006-03-20

    申请人： Kazuto Shimizu ,  Toshiyuki Mizutani ,  Masaharu Hori

    发明人： Kazuto Shimizu ,  Toshiyuki Mizutani ,  Masaharu Hori

    IPC分类号： F16C32/06

    CPC分类号： F16C33/107 ,  F16C17/107 ,  H02K7/085 ,  Y10T29/49639

    摘要： A fluid dynamic bearing apparatus having an increased a value of tolerance for a moment load is provided.A cylindrical sleeve portion 8 is fixed to the inner periphery of the housing 7 whose both ends are open, and a shaft member 2 is further inserted at the inner periphery of the sleeve portion 8. Sealing portions 9, 10 are fixed to the shaft member 2 in the manner of nipping the sleeve portion 8 from both sides in the axial direction, and sealing spaces S1, S2 having the oil level of a lubricating oil are formed between the outer circumferential surfaces 9a, 10a of the sealing portions 9, 10 and the inner circumferential surface 7a of the housing 7. The radial bearing gap between the inner circumferential surface 8a of the sleeve portion 8 and the outer circumferential surface 2a of the shaft member 2 is formed and thrust bearing gaps are formed between the end faces 9b, 10b of the sealing portions 9, 10 and the end faces 8b, 8c of the sleeve portion 8 opposing these to support the shaft member 2 in a non-contact manner in the radial direction and in the thrust direction by the hydrodynamic effect of the lubricating oil produced in each bearing gap.

    摘要翻译： 提供了一种具有增加的瞬时负载公差值的流体动力轴承装置。 圆筒形套筒部分8固定在壳体7的两端打开的内周，轴构件2进一步插入套筒部分8的内周。密封部分9,10固定在轴构件 在从密封部9,10的外周面9a，10a之间形成具有润滑油的油面的密封空间S1，S2， 壳体7的内周面7a形成，套筒部8的内周面8a与轴构件2的外周面2a之间的径向轴承间隙形成在端面9b， 密封部分9,10的10b以及与其相对的套筒部分8的端面8b，8c以径向方向和推力方向通过流体动力来支撑轴构件2 在每个轴承间隙产生的润滑油的影响。

    Dynamic Bearing Device
    3.
    发明申请
    Dynamic Bearing Device 审中-公开
    动态轴承装置

    公开(公告)号：US20080203838A1

    公开(公告)日：2008-08-28

    申请号：US11629458

    申请日：2005-09-14

    申请人： Isao Komori ,  Ryouichi Nakajima ,  Masaharu Hori ,  Kazuto Shimizu ,  Tatsuo Nakajima

    发明人： Isao Komori ,  Ryouichi Nakajima ,  Masaharu Hori ,  Kazuto Shimizu ,  Tatsuo Nakajima

    IPC分类号： H02K7/08 ,  F16C17/10

    CPC分类号： H02K7/085 ,  F16C17/107 ,  F16C33/107 ,  F16C33/1085

    摘要： A dynamic pressure generation portion is formed on the outer circumferential surface 2a1 of a shaft portion 2a. This allows for forming a bearing member 7 into which a housing and a sleeve-shaped member that were conventionally separately configured due to the machinability of the dynamic pressure generation portion are integrated. The opening at one end of the bearing member 7 is sealed with a cover member 8 integrated with the bearing member 7 or with a separate cover member 8 secured to the bearing member 7.

    摘要翻译： 在轴部2a的外周面2a上形成动压产生部。 由此，能够形成由动压产生部的切削性而通常分开构成的壳体和套筒状部件的轴承部件7。 轴承构件7的一端的开口用与轴承构件7一体化的盖构件8或与固定在轴承构件7上的单独的盖构件8密封。

    Fluid dynamic bearing device and manufacturing method therefor
    6.
    发明授权
    Fluid dynamic bearing device and manufacturing method therefor 有权
    流体动力轴承装置及其制造方法

    公开(公告)号：US08672548B2

    公开(公告)日：2014-03-18

    申请号：US13062902

    申请日：2009-08-20

    申请人： Masaharu Hori

    发明人： Masaharu Hori

    IPC分类号： F16C32/06

    CPC分类号： F16C35/02 ,  F16C17/107 ,  F16C33/08 ,  F16C33/103 ,  F16C2370/12

    摘要： To increase fixation strength of a bearing sleeve with respect to a bottomed cylindrical housing, a fluid dynamic bearing device (1) is provided with a bottomed cylindrical housing (7), a bearing sleeve (8) fixed to an inner periphery thereof, and a shaft member (2) inserted along an inner periphery of the bearing sleeve (8). An adhesive pool (11) is provided between an inner peripheral surface (7a2) of a smaller diameter portion (7a) of the housing (7) and an outer peripheral surface (8d) of the bearing sleeve (8), which are opposed to each other. Further, an inner peripheral chamfer (7f) continuous with the adhesive pool (11) is provided on an inner peripheral portion of the housing (7), and a first tapered space (12) formed between the inner peripheral chamfer (7f) and the bearing sleeve (8) is sealed with an adhesive (13).

    摘要翻译： 为了增加轴承套筒相对于有底圆柱形壳体的固定强度，流体动力轴承装置（1）设置有有底的圆柱形壳体（7），固定到其内周边的轴承套筒（8）和 轴构件（2）沿轴承套（8）的内周插入。 在壳体（7）的较小直径部分（7a）的内周表面（7a2）和轴承套（8）的外周表面（8d）之间设置有粘合剂池（11） 彼此。 此外，在壳体（7）的内周部设置有与粘合剂池（11）连续的内周倒角（7f），在内周倒角（7f）和 轴承套（8）用粘合剂（13）密封。

    Fluid dynamic bearing device
    7.
    发明授权
    Fluid dynamic bearing device 有权
    流体动力轴承装置

    公开(公告)号：US08177434B2

    公开(公告)日：2012-05-15

    申请号：US12282057

    申请日：2007-02-28

    申请人： Kenji Ito ,  Yoshiharu Inazuka ,  Isao Komori ,  Masaharu Hori ,  Masaaki Toda

    发明人： Kenji Ito ,  Yoshiharu Inazuka ,  Isao Komori ,  Masaharu Hori ,  Masaaki Toda

    IPC分类号： F16C32/06

    CPC分类号： F16C17/107 ,  F16C17/026 ,  F16C17/045 ,  F16C33/107

    摘要： A fluid dynamic bearing device includes a housing injection molded with a bearing sleeve as an insert. Accordingly, the molding of the housing and the assembly of the housing and the bearing sleeve can be performed in a single step. In addition to this, by simply increasing the die precisions the housing and the bearing sleeve can be fixed easily with high precision. Since the housing is opened at both ends, it is possible to sandwich the bearing sleeve, and accordingly, the bearing sleeve can be accurately positioned inside the dies with reliability.

    摘要翻译： 流体动力轴承装置包括注射成型的轴承套筒作为插入件的壳体。 因此，壳体的模制和壳体和轴承套的组装可以在一个步骤中进行。 除此之外，通过简单地增加模具精度，可以高精度地容易地固定壳体和轴承套筒。 由于壳体在两端开口，因此可以夹持轴承套筒，因此可以可靠地将轴承套筒精确地定位在模具内部。

    Fluid dynamic bearing device
    8.
    发明授权
    Fluid dynamic bearing device 有权
    流体动力轴承装置

    公开(公告)号：US08128289B2

    公开(公告)日：2012-03-06

    申请号：US12304837

    申请日：2007-03-01

    申请人： Tetsuya Yamamoto ,  Isao Komori ,  Yoshiharu Inazuka ,  Masaharu Hori

    发明人： Tetsuya Yamamoto ,  Isao Komori ,  Yoshiharu Inazuka ,  Masaharu Hori

    IPC分类号： F16C32/06

    CPC分类号： F16C33/107 ,  F16C17/08 ,  F16C17/107 ,  F16C2370/12

    摘要： An outer peripheral surface (8d) of a bearing sleeve (8) is formed on a radially inside with respect to a first dynamic pressure generation portion (B1). In this case, it is possible to reduce a thickness of the bearing sleeve (8) while securing a first thrust dynamic pressure generating portion (B1) which has a thrust load capacity equivalent to that in a conventional case where a thrust dynamic pressure generating portion is formed in an end surface of the bearing sleeve. Accordingly, it is possible to reduce the thickness of the bearing sleeve (8) without sacrificing a bearing performance in a thrust direction. With this structure, a total amount of a lubricating oil sealed in a bearing device can be reduced, thereby reducing a capacity of a buffering function so as to downsize a sealing portion (9), and by extension, downsizing a fluid dynamic bearing device (1).

    摘要翻译： 在第一动压产生部（B1）的径向内侧形成有轴承套（8）的外周面（8d）。 在这种情况下，可以在确保推力载荷能力等同于推力动压产生部分（B1）的第一推力动压产生部分（B1）的同时，减小轴承套筒（8）的厚度， 形成在轴承套的端面上。 因此，可以在不牺牲推力方向的轴承性能的情况下减小轴承套（8）的厚度。 利用这种结构，可以减少密封在轴承装置中的润滑油的总量，从而降低缓冲功能的能力，从而减小密封部分（9）的尺寸，并且通过扩展来减小流体动态轴承装置（ 1）。

    FLUID DYNAMIC BEARING DEVICE
    9.
    发明申请
    FLUID DYNAMIC BEARING DEVICE 有权
    流体动力轴承装置

    公开(公告)号：US20100034494A1

    公开(公告)日：2010-02-11

    申请号：US12522566

    申请日：2007-08-09

    申请人： Masaharu Hori

    发明人： Masaharu Hori

    IPC分类号： F16C32/06

    CPC分类号： F16C33/74 ,  F16C17/107 ,  F16C33/107

    摘要： Peeling-off of an oil-repellent film can be reliably prevented. A fluid dynamic bearing device (1) includes a shaft member (2) and first and second flange portions (9, 10) serving as seal portions fixed to the shaft member (2). On outer peripheral sides of the first and second flange portions (9, 10), a first seal space (S1) and a second seal space (S2) are formed, respectively. Oil-repellent films (11) are provided on end surfaces of the first flange portion (9) and the second flange portion (10) separately from a pressure-receiving surface (12) subjected to pressure at a time of assembly, the end surfaces being exposed to external air.

    摘要翻译： 可以可靠地防止防油膜的剥离。 流体动力轴承装置（1）包括轴构件（2）和用作固定到轴构件（2）的密封部分的第一和第二凸缘部分（9,10）。 在第一和第二凸缘部（9,10）的外周侧分别形成有第一密封空间（S1）和第二密封空间（S2）。 防油膜（11）分别设置在第一凸缘部（9）和第二凸缘部（10）的与组装时承受压力的受压面（12）分开的端面上，端面 暴露于外部空气。

    Fluid bearing device
    10.
    发明申请
    Fluid bearing device 审中-公开
    流体轴承装置

    公开(公告)号：US20100034493A1

    公开(公告)日：2010-02-11

    申请号：US11989597

    申请日：2006-06-02

    申请人： Masaharu Hori ,  Tetsuya Kurimura

    发明人： Masaharu Hori ,  Tetsuya Kurimura

    IPC分类号： F16C32/06

    CPC分类号： F16C33/74 ,  F16C2370/12

    摘要： Provided is a fluid bearing device in which run-out of another member fixed to a shaft member is suppressed. At one end of a shaft member (2), there is provided a press-fitting fixation surface (2a4) to which a hub (3) can be press-fitted and fixed. Further, between the press-fitting fixation surface (2a4) and an end surface (2d), there is provided a guide portion (10) to be used when press-fitting the hub (3) onto the press-fitting fixation surface (2a4). The guide portion (10) is provided with a cylindrical surface (11) of a smaller diameter than an inner peripheral surface (3b) of the hub (3). Further, between the press-fitting fixation surface (2a4) and the cylindrical surface (11), there is provided a first diverging surface (12) with an arcuate section gradually diverging from the cylindrical surface (11) toward the press-fitting fixation surface (2a4), and between the cylindrical surface (11) and the end surface (2d), there is provided a tapered second diverging surface (13) gradually diverging from the end surface (2d) toward the cylindrical surface (11).

    摘要翻译： 提供一种流体轴承装置，其中抑制固定到轴构件的另一构件的跳动。 在轴构件（2）的一端设置有压配合固定面（2a4），毂（3）可压配合固定在其上。 此外，在压入固定面（2a4）和端面（2d）之间设置有用于将轮毂（3）压配合到压配固定面（2a4）上的引导部（10） ）。 引导部分（10）设置有比轮毂（3）的内周面（3b）小的直径的圆柱形表面（11）。 此外，在压入固定面（2a4）和圆筒面（11）之间，设有第一分割面（12），其具有从圆筒面（11）朝向压配合固定面逐渐发散的弓形部 （2a4），并且在所述圆筒形表面（11）和所述端面（2d）之间，设置有从所述端面（2d）向所述圆柱形表面（11）逐渐发散的渐缩的第二发散表面（13）。