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    Dynamic bearing unit
    1.
    发明申请
    Dynamic bearing unit 失效
    动态轴承单元

    公开(公告)号：US20070144833A1

    公开(公告)日：2007-06-28

    申请号：US11644006

    申请日：2006-12-22

    申请人： Katsutoshi Nii ,  Hideo Shikata

    发明人： Katsutoshi Nii ,  Hideo Shikata

    IPC分类号： F01M1/06

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

    摘要： A fluid dynamic pressure effect can be sufficient without receiving a large effect of viscous friction of lubricating oil with changes in the environmental temperature in which it is used, and smooth starting of the rotating shaft can be ensured by regulating the gap between the rotating shaft and bearing within a suitable range. An outer diameter of the bearing, D, a length in an axial direction of the bearing, L, a gap at a radial side which is between the rotating shaft and the bearing, C, and an inclining height of the bearing end surface to which the flange is faced, δ, satisfy the expression L/D

    摘要翻译： 流体动力学效应可以充分发挥润滑油在使用环境温度变化的作用下的粘性摩擦力的大的影响，通过调整旋转轴与旋转轴之间的间隙可以确保旋转轴的平滑启动 在适当的范围内。 轴承的外径D，轴承的轴向长度L，在旋转轴与轴承之间的径向侧的间隙C和轴承端面的倾斜高度，其中 法兰面对，δ，满足表达式L / D

    Disk drive with unbalance correcting mechanism
    4.
    发明授权
    Disk drive with unbalance correcting mechanism 失效
    磁盘驱动器与不平衡校正机制

    公开(公告)号：US06477133B1

    公开(公告)日：2002-11-05

    申请号：US09644854

    申请日：2000-08-24

    申请人： Yasuhiro Yoshimura ,  Yoshishige Endo ,  Katsutoshi Nii ,  Yoshihiro Satou ,  Yoshiaki Yamauchi ,  Noriyuki Kumasaka ,  Kazuto Oyama ,  Hisahiro Miki ,  Tomoki Hirata

    发明人： Yasuhiro Yoshimura ,  Yoshishige Endo ,  Katsutoshi Nii ,  Yoshihiro Satou ,  Yoshiaki Yamauchi ,  Noriyuki Kumasaka ,  Kazuto Oyama ,  Hisahiro Miki ,  Tomoki Hirata

    IPC分类号： G11B2300

    CPC分类号： G11B33/08 ,  G11B17/0284

    摘要： A disk drive is realized, which omits running-in for stabilizing a change in a correcting function produced by sliding between balls and a rolling groove in an unbalance correcting mechanism, and prevents immobility and straying of balls, and which comprises a unit mechanism assembled by using 12 balls subjected to surface treatment with heptadecafluorodecyltrimethoxysilane and a turntable plated with a chemical nickel plating containing phosphorus and boron to have a thickness of 5 &mgr;m and by injecting 1 microliter of ester oil into the rolling groove, and further comprises a recess formed in a sidewall of the rolling groove of the unbalance correcting mechanism to prolong the service life of the correcting function.

    摘要翻译： 实现了一种磁盘驱动器，其省略了进入，用于稳定由不平衡校正机构中的球和滚动槽之间的滑动产生的校正功能的变化，并且防止球的不动和偏移，并且包括由单元机构组装的单元机构 使用用十七氟癸基三甲氧基硅烷进行表面处理的12个滚珠和镀有含磷和硼的化学镀镍的转台，其厚度为5um，并通过将1微升的酯油注入到滚动槽中，并且还包括形成在 不平衡校正机构的滚动槽的侧壁延长校正功能的使用寿命。

    Magnetic fluid bearing unit structure and motor having the same
    7.
    发明授权
    Magnetic fluid bearing unit structure and motor having the same 失效
    磁流体轴承单元结构和电动机相同

    公开(公告)号：US5821655A

    公开(公告)日：1998-10-13

    申请号：US786964

    申请日：1997-01-24

    申请人： Hidekazu Tokushima ,  Motohiro Miyasaka ,  Michihiro Aizawa ,  Hideo Shikata ,  Katsutoshi Nii

    发明人： Hidekazu Tokushima ,  Motohiro Miyasaka ,  Michihiro Aizawa ,  Hideo Shikata ,  Katsutoshi Nii

    IPC分类号： F16C17/10 ,  F16C32/04 ,  F16C33/10 ,  H02K5/16 ,  H02K5/167 ,  F16C32/06

    CPC分类号： F16C17/10 ,  F16C33/1035 ,  H02K5/1677

    摘要： A magnetic fluid bearing unit has a bearing housing, a bearing member having magnetic fluid as a lubricating agent, a rotary body rotatively supported by the bearing member, an upper permanent magnet arranged inside the bearing housing, and a lower permanent magnet arranged inside the bearing housing, the bearing member being sandwiched by the upper permanent magnet and the lower permanent magnet. The bearing member is a radial porous oil-containing bearing member in which the magnetic fluid is impregnated. The upper permanent magnet is set to have one direction of magnetic pole orientation, and the lower permanent magnet is set to have the same direction of magnetic pole orientation as the upper permanent magnet. The bearing member is sandwiched by the upper permanent magnet and the lower permanent magnet to confine the magnetic fluid. Over a wide range of rotation speeds, the leakage and the scattering of the magnetic fluid from the bearing unit can be prevented. The bearing unit for a compact size motor having a high rotation accuracy can be obtained.

    摘要翻译： 磁性流体轴承单元具有轴承壳体，具有作为润滑剂的磁性流体的轴承构件，由轴承构件可旋转地支撑的旋转体，布置在轴承壳体内部的上部永磁体和布置在轴承内部的下部永磁体 壳体，轴承构件被上永磁体和下永磁体夹持。 轴承构件是其中浸渍有磁性流体的径向多孔含油轴承构件。 上永磁体被设定为具有一个方向的磁极取向，并且下永磁体被设置为具有与上永磁体相同的磁极方位方向。 轴承构件被上永磁体和下永磁体夹持以限制磁流体。 在很宽的旋转速度范围内，可以防止来自轴承单元的磁性流体的泄漏和散射。 可以获得具有高旋转精度的紧凑型电动机的轴承单元。

    Oil retaining bearing unit and motor having oil retaining bearing unit
    8.
    发明授权
    Oil retaining bearing unit and motor having oil retaining bearing unit 失效
    油保持轴承单元和电机具有止油轴承单元

    公开(公告)号：US5810481A

    公开(公告)日：1998-09-22

    申请号：US852246

    申请日：1997-05-06

    申请人： Katsutoshi Nii ,  Makoto Kondoh ,  Takashi Kono ,  Yoshihiro Sato ,  Seiichiro Terashima

    发明人： Katsutoshi Nii ,  Makoto Kondoh ,  Takashi Kono ,  Yoshihiro Sato ,  Seiichiro Terashima

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

    CPC分类号： F16C17/10 ,  F16C33/103 ,  G11B19/2009 ,  F16C2370/12

    摘要： Oil retaining bearing members 2a and 2b for supporting a rotative shaft 1 are arranged in a bearing housing 7 with an interval. The bearing housing 7 has a bottom portion, one end being opened and another end being closed. A porous spacer 3 for supplying a lubrication oil is closely inserted between the oil retaining bearings 2a and 2b. An oil thrower 8 is arranged at an upper portion of the bearing housing 7 and a thrust bearing 5 is arranged at a lower portion. The open end of the bearing housing 7 is arranged on the upper portion and the another end of the bearing housing 7 is arranged on the lower portion of the bearing housing 7, and state a lubrication oil 4a is enclosed in the housing to immerse a part of the porous spacer 3 to some degree. The pore diameter of the porous spacer 3 is larger than that of the oil retaining bearings 2a and 2b. By utilizing capillary tube action in by the porous spacer 3, the lubrication oil 4a is supplied to the oil retaining bearing 2a. Accordingly, an oil retaining bearing unit having an excellent performance and a superior mass productivity and a motor having a long service life and a high reliability using the oil retaining bearing unit can be provided.

    摘要翻译： 用于支撑旋转轴1的止油轴承构件2a和2b以间隔布置在轴承壳体7中。 轴承壳体7具有底部，一端打开，另一端封闭。 用于供给润滑油的多孔隔离物3紧密地插入在保油轴承2a和2b之间。 在轴承壳体7的上部配置有排油装置8，在下部配置止推轴承5。 轴承壳体7的开口端设置在上部，轴承壳体7的另一端设置在轴承壳体7的下部，并且将润滑油4a封闭在壳体中以将部件 多孔隔离物3的一部分。 多孔隔离物3的孔径大于油保持轴承2a和2b的孔径。 通过利用毛细管作用于多孔隔离物3，将润滑油4a供给至保油轴承2a。 因此，可以提供具有优异的性能和优异的质量生产率的油保持轴承单元和具有使用寿命长并且使用油保持轴承单元的高可靠性的电动机。

    Vertical shaft type pump
    9.
    发明授权
    Vertical shaft type pump 失效
    垂直轴式泵

    公开(公告)号：US5297927A

    公开(公告)日：1994-03-29

    申请号：US010079

    申请日：1993-01-28

    申请人： Kooji Aizawa ,  Katsutoshi Nii ,  Ryoji Okada ,  Masayuki Yamada ,  Kunio Takada

    发明人： Kooji Aizawa ,  Katsutoshi Nii ,  Ryoji Okada ,  Masayuki Yamada ,  Kunio Takada

    IPC分类号： C10M103/00 ,  C10M173/00 ,  C10N40/02 ,  F04B53/00 ,  F04D13/00 ,  F04D29/046 ,  F04D29/06 ,  F16C17/14 ,  F16C33/24 ,  F01D25/18

    CPC分类号： F04D29/061 ,  F16C33/043 ,  F16C33/1025 ,  F16C17/02

    摘要： A vertical shaft type pump including a bearing device in which water in the pump is utilized as lubricating water without supplying water to the bearing from the outside of the pump, thereby repeatedly conducting no-load operation in the air (in such a state that water is not pumped) stably for a long period of time. In the pump, a water storage tank upwardly opened is fixed to a rotary shaft, and the lubricating water (the water in the pump) is retained within the water storage tank so that the bearing is operated while being always soaked in the lubricating water. Also, foreign substances in the water storage tank are mixed with the water without deposition, and the water containing the foreign substances is replaced by the newly pumped water.

    摘要翻译： 一种垂直轴式泵，其包括轴承装置，其中泵中的水被用作润滑水，而不从泵的外部向轴承供水，从而在空气中反复进行空载操作（在水的状态下 不被泵送）稳定长时间。 在泵中，向上打开的储水箱固定在旋转轴上，并且润滑水（泵中的水）保持在储水箱内，使得轴承在始终浸入润滑水中的同时运转。 此外，储水箱中的异物与水混合而不沉积，并且含有异物的水被新泵送的水替代。

    Magnetic fluid bearing apparatus and motor having magnetic fluid bearing apparatus
    10.
    发明授权
    Magnetic fluid bearing apparatus and motor having magnetic fluid bearing apparatus 失效
    具有磁性流体轴承装置的磁性流体轴承装置和电动机

    公开(公告)号：US5108198A

    公开(公告)日：1992-04-28

    申请号：US553375

    申请日：1990-07-17

    申请人： Katsutoshi Nii ,  Kazuhiko Kawaike ,  Jun Matsubayashi ,  Satosi Uno

    发明人： Katsutoshi Nii ,  Kazuhiko Kawaike ,  Jun Matsubayashi ,  Satosi Uno

    IPC分类号： F16C32/04 ,  F16C33/10 ,  F16C33/82 ,  F16J15/40 ,  F16J15/43

    CPC分类号： F16J15/43 ,  F16C33/1035 ,  F16C33/746

    摘要： A sliding bearing an an end ring are mounted on a housing. A magnetic fluid sealing member comprises a permanent magnet and a magnetic fluid. A space is formed between the magnetic fluid sealing member and a lubricating fluid. A shaft has projection member or the end ring forms a spiral groove on an inner peripheral portion. The projection member of the shaft or the spiral groove of the end ring is disposed in an opposite position of the magnetic fluid sealing member. A magnetic fluid flow is disturbed by the projection member of the shaft or the spiral groove of the end ring according to a rotation of the shaft, then a magnetic fluid film is destructed instantaneously and the pressure at the space lowers. Air in the space is discharged from the housing. The scatter degree of the magnetic fluid is made slightly.

    摘要翻译： 一个端环的滑动轴承安装在外壳上。 磁性流体密封构件包括永磁体和磁性流体。 在磁性流体密封构件和润滑流体之间形成空间。 轴具有突出构件或端环在内周部分上形成螺旋槽。 轴的突出构件或端环的螺旋槽设置在磁性流体密封构件的相对位置。 根据轴的旋转，磁流体流动被轴的突出构件或端环的螺旋槽扰动，然后瞬时破坏磁性流体膜并且空间中的压力降低。 空间中的空气从外壳排出。 磁性流体的散射度略微变小。