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    Hydrodynamic bearing with reduced temperature sensitivity
    1.
    发明授权
    Hydrodynamic bearing with reduced temperature sensitivity 失效
    降低温度敏感性的流体动力轴承

    公开(公告)号：US5697708A

    公开(公告)日：1997-12-16

    申请号：US563589

    申请日：1995-11-28

    申请人： Hans Leuthold ,  David Jennings ,  Lakshman Nagarathnam ,  Raquib Khan ,  Greg Rudd

    发明人： Hans Leuthold ,  David Jennings ,  Lakshman Nagarathnam ,  Raquib Khan ,  Greg Rudd

    IPC分类号： F16C17/10 ,  F16C17/22 ,  F16C25/02 ,  F16C33/10 ,  F16L32/06

    CPC分类号： F16C25/02 ,  F16C17/10 ,  F16C17/22

    摘要： A self-lubricating hydrodynamic spindle bearing comprising a stationary shaft including a conical, inwardly tapered surfaces extending axially form outer regions of the shaft toward a center connecting region of the shaft, a rotatably mounted sleeve surrounding the shaft and including surface regions flared axially inwardly toward a center region of the sleeve, the tapered surface regions and the flared surface regions defining a bearing gap for the hydrodynamic bearing, the sleeve defining a connection region adjacent the connecting region between the tapered surfaces of the shaft, the connection region including a tube collapsible in response to a change in internal pressure in the connection region to stabilize stiffness and power consumption in the bearing.

    摘要翻译： 一种自润滑流体动力主轴轴承，包括固定轴，该固定轴包括圆锥形的向内锥形的表面，所述锥形的向内锥形表面轴向地延伸到所述轴的外部区域以朝向所述轴的中心连接区域，围绕所述轴的可旋转地安装的套筒，并且包括轴向向内张开的表面区域 套筒的中心区域，锥形表面区域和扩口表面区域限定用于流体动力轴承的轴承间隙，套筒限定了与轴的锥形表面之间的连接区域相邻的连接区域，该连接区域包括可折叠的管 响应于连接区域中的内部压力的变化，以稳定轴承中的刚度和功率消耗。

    Hydrodynamic bearing assembly with single sided grooved counterplace
    2.
    发明授权
    Hydrodynamic bearing assembly with single sided grooved counterplace 失效
    流体动力轴承组件，带单面槽式对位

    公开(公告)号：US5653540A

    公开(公告)日：1997-08-05

    申请号：US545514

    申请日：1995-10-19

    申请人： Gunter Heine ,  Hans Leuthold ,  Lakshman Nagarathnam ,  David Jennings ,  Norbert S. Parsoneault

    发明人： Gunter Heine ,  Hans Leuthold ,  Lakshman Nagarathnam ,  David Jennings ,  Norbert S. Parsoneault

    IPC分类号： H02K5/167 ,  F16C17/10 ,  F16C33/10 ,  G11B19/20 ,  F16C32/06

    CPC分类号： F16C33/107 ,  F16C17/107 ,  G11B19/2009 ,  F16C2370/12

    摘要： A spindle motor includes a rotating hub for supporting one or more discs in a disc drive, and a hydrodynamic bearing system for supporting a hub for rotation, the bearing system includes a sleeve and a shaft fitted into an axial bore of the sleeve. The shaft and the sleeve rotate freely relative to one another, and together, define a journal bearing. The shaft supports an annular thrust plate. The thrust plate extends into a recess formed by an axial face stepped into the sleeve and a counterplate parallel to the axial face and the thrust plate and attached to the sleeve. A first surface of the thrust plate faces the axial face of the sleeve which has a groove pattern formed on it. A surface of the counterplate faces an opposed, second surface of the thrust plate which has a groove pattern formed on it, to form an effective fluid pumping system in the hydrodynamic bearing.

    摘要翻译： 主轴电动机包括用于支撑盘驱动器中的一个或多个盘的旋转轮毂和用于支撑轮毂以旋转的流体动力轴承系统，该轴承系统包括套筒和装配到套筒的轴向孔中的轴。 轴和套筒相对于彼此自由旋转，并且一起形成轴颈轴承。 轴支撑环形止推板。 推力板延伸到由阶梯式进入套筒的轴向面和平行于轴向面和推力板并附接到套筒上的对准板形成的凹槽中。 止推板的第一表面面向套筒的轴向面，其上形成有凹槽图案。 对面板的表面面向推力板的相对的第二表面，其具有形成在其上的凹槽图案，以在流体动力轴承中形成有效的流体泵送系统。

    Single plate hydrodynamic bearing cartridge
    3.
    发明申请
    Single plate hydrodynamic bearing cartridge 审中-公开
    单板流体动力轴承筒

    公开(公告)号：US20050100256A1

    公开(公告)日：2005-05-12

    申请号：US10400082

    申请日：2003-03-24

    申请人： Lakshman Nagarathnam ,  Hans Leuthold ,  David Jennings ,  Norbert Parsoneault ,  Wesley Clark ,  Gunter Heine

    发明人： Lakshman Nagarathnam ,  Hans Leuthold ,  David Jennings ,  Norbert Parsoneault ,  Wesley Clark ,  Gunter Heine

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

    CPC分类号： F16C33/107 ,  F16C17/107

    摘要： A hydrodynamic bearing having a shaft relatively rotatable with respect to a surrounding sleeve and having a thrust plate on one end thereof rotating in a recess of the sleeve. The shaft is preferably interrupted by a equi-pressure groove accessing a central reservoir in the shaft and having journal bearings defined by herringbone patterns above and below the groove to stabilize and provide stiffness to the cartridge. The stiffness of the cartridge is further enhanced by a thrust plate carried at one end of the shaft and rotating in a recess of the sleeve and being used to define thrust bearings on either surface.

    摘要翻译： 一种流体动力轴承，其具有相对于周围套筒相对旋转的轴，并且在其一端在轴套的凹部中旋转的止推板。 轴优选地被等距压力的凹槽中断，该凹槽进入轴中的中央储存器，并且具有由槽形图案在凹槽之上和之下限定的轴颈轴承，以稳定并向盒提供刚度。 通过在轴的一端承载并在套筒的凹部中旋转并用于在任一表面上限定推力轴承的止推板进一步增强了料筒的刚度。

    Single plate hydrodynamic bearing cartridge
    4.
    发明授权
    Single plate hydrodynamic bearing cartridge 失效
    单板流体动力轴承筒

    公开(公告)号：US06702408B1

    公开(公告)日：2004-03-09

    申请号：US08976373

    申请日：1997-11-21

    申请人： Lakshman Nagarathnam ,  Hans Leuthold ,  David Jennings ,  Norbert Parsoneault ,  Wesley R. Clark ,  Gunther Heine

    发明人： Lakshman Nagarathnam ,  Hans Leuthold ,  David Jennings ,  Norbert Parsoneault ,  Wesley R. Clark ,  Gunther Heine

    IPC分类号： F16C1710

    CPC分类号： F16C33/107 ,  F16C17/107 ,  F16C33/102

    摘要： Hydrodynamic bearing having a shaft relatively rotatable with respect to a surrounding sleeve and having a thrust plate on one end thereof rotating in a recess of the sleeve. The shaft is preferably interrupted by a equi-pressure groove accessing a central reservoir in the shaft and having journal bearings defined by herringbone patterns above and below the groove to stabilize and provide stiffness to the cartridge. The stiffness of the cartridge is further enhanced by a thrust plate carried at one end of the shaft and rotating in a recess of the sleeve and being used to define thrust bearings on either surface thereof.

    摘要翻译： 流体动力轴承具有相对于周围套筒相对旋转的轴并且在其一端在套筒的凹部中旋转的止推板。 轴优选地被等距压力的凹槽中断，该凹槽进入轴中的中央储存器，并且具有由槽形图案在凹槽之上和之下限定的轴颈轴承，以稳定并向盒提供刚度。 通过在轴的一端承载并在套筒的凹部中旋转并用于在其任一表面上限定推力轴承的止推板进一步增强了料筒的刚性。

    Fluid retention principles for hydrodynamic bearings
    7.
    发明授权
    Fluid retention principles for hydrodynamic bearings 失效
    流体动力学轴承的流体保留原理

    公开(公告)号：US5524986A

    公开(公告)日：1996-06-11

    申请号：US284126

    申请日：1994-08-02

    申请人： Hans Leuthold ,  Coda H. Pan ,  David J. Jennings ,  Lakshman Nagarathnam ,  Raquib U. Khan ,  Wesley R. Clark ,  Gunter Heine

    发明人： Hans Leuthold ,  Coda H. Pan ,  David J. Jennings ,  Lakshman Nagarathnam ,  Raquib U. Khan ,  Wesley R. Clark ,  Gunter Heine

    IPC分类号： F16C33/10 ,  F16C33/72 ,  F16C33/74 ,  G11B19/20 ,  G11B33/14 ,  F16C32/06

    CPC分类号： F16C33/74 ,  F16C17/026 ,  F16C17/045 ,  F16C33/103 ,  F16C33/107 ,  G11B19/2009 ,  G11B33/148 ,  F16C2370/12 ,  G11B33/1446

    摘要： A hydrodynamic bearing incorporates a flexible membrane at one end of the fluid gap in the hydrodynamic bearing. If voids exist in the fluid, and if changes in the size of these voids or bubbles occur with changes in temperature or pressure in which the disc drive is being used, then the volume of the fluid will change, and increase relative to the change in size of the volume of the surrounding physical part. The flexible membrane will yield to the increased pressure of the increasing volume of the fluid. The membrane essentially acts as a spring whose spring force is overcome by the pressure created by or accompanying a increase in volume of the fluid. As this happens, the spring force of the membrane is overcome, the membrane relaxes and forms a bladder, effectively increasing the volume in which the lubricating fluid is contained, and preventing its escape or being forced out of the inner region of the bearing. In this way, the fluid remains in the bearing and will not enter the surrounding atmosphere, nor will it be lost from the journal bearing region so that the hydrodynamic bearing is not as effective, when the temperature decreases or the pressure drops.

    摘要翻译： 流体动力轴承在流体动力轴承中的流体间隙的一端处包含柔性膜。 如果流体中存在空隙，并且如果在使用盘驱动器的温度或压力的变化中发生这些空隙或气泡的尺寸的变化，则流体的体积将改变，并且相对于 周围物体的体积大小。 柔性膜将产生增加的流体体积的增加的压力。 膜基本上起弹簧的作用，其弹簧力由流体的体积增加产生的压力或伴随着流体体积的增加而克服。 发生这种情况时，膜的弹簧力被克服，膜松弛并形成气囊，有效地增加容纳润滑液的体积，并防止其逃逸或被迫离开轴承的内部区域。 以这种方式，流体保持在轴承中并且不会进入周围的大气，也不会从轴颈轴承区域中流失，使得当温度降低或压力下降时，流体动力轴承不那么有效。

    Squeeze film damping for a hard disc drive
    8.
    发明授权
    Squeeze film damping for a hard disc drive 失效
    挤压胶片阻尼的硬盘驱动器

    公开(公告)号：US06239943B1

    公开(公告)日：2001-05-29

    申请号：US08727858

    申请日：1996-10-08

    申请人： David John Jennings ,  Hans Leuthold ,  Lakshman Nagarathnam ,  Steve Gonzalez ,  Dean A. Tarrant ,  Gunter Heine ,  Raquib U. Khan

    发明人： David John Jennings ,  Hans Leuthold ,  Lakshman Nagarathnam ,  Steve Gonzalez ,  Dean A. Tarrant ,  Gunter Heine ,  Raquib U. Khan

    IPC分类号： G11B3308

    CPC分类号： G11B25/043 ,  G11B33/08

    摘要： A spindle motor is described having a motor stator, a motor rotor, the motor being energized to cause rotation of the rotor supporting a single disc or a stack of discs which is mounted in such a way that the rotating bottom or top (or both) disc surface is closely adjacent to a stationary disc drive casting surface. The squeeze film action in the remaining air gap provides significant damping of the disc vibration. Typical implementation use air gaps of 0.004″-0.006″ for 2½″ drives and 0.006″-0.10″ for 3½″ drives.

    摘要翻译： 主轴电动机被描述为具有电动机定子，电动机转子，电动机被激励以引起支撑转子的转子，所述转子支撑单个盘或一堆盘，其以这样的方式安装，使得旋转的底部或顶部（或两者） 盘表面与固定盘驱动铸造表面紧密相邻。 剩余气隙中的挤压膜作用提供了盘振动的显着阻尼。 典型的实施方式，对于2½“驱动器使用0.004” - 0.006“的空气间隙，对于3½”驱动器使用0.006“ - 0.10”的气隙。