公开(公告)号：US06469866B1

公开(公告)日：2002-10-22

申请号：US09504043

申请日：2000-02-14

申请人： Katsutoshi Nii ,  Masaru Muranishi ,  Shozo Saegusa ,  Tsuyoshi Takahashi ,  Kenji Tomida ,  Takashi Matsuki ,  Yuuichi Yanagase ,  Mitsuyuki Tsuyuki ,  Shinobu Yoshida ,  Hiroshi Nishida ,  Kazuhiko Kawakami

发明人： Katsutoshi Nii ,  Masaru Muranishi ,  Shozo Saegusa ,  Tsuyoshi Takahashi ,  Kenji Tomida ,  Takashi Matsuki ,  Yuuichi Yanagase ,  Mitsuyuki Tsuyuki ,  Shinobu Yoshida ,  Hiroshi Nishida ,  Kazuhiko Kawakami

IPC分类号： G11B1920

CPC分类号： H02K7/09 ,  F16C17/028 ,  F16C17/045 ,  F16C17/047 ,  F16C17/10 ,  F16C17/26 ,  F16C33/1035 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2009 ,  G11B19/2036 ,  H02K7/085

摘要： A rotary shaft is rotatably supported by a hydrodynamic fluid radial bearing and a hydrodynamic fluid thrust bearing which are excellent in shock resistance, an bearing arrangement in which vibration in a translation mode of the shaft, among vibration components caused by unbalance force exerted to the rotary shaft, is supported by the radial bearing, and vibration in conical mode is supported by the thrust bearing, magnetic fluid is used as lubrication oil, and a permanent magnet is located between the radial bearing and the thrust bearing so as to apply a magnetic attracting force between the rotary shaft and the thrust bearing so as to carry out axial positioning in order to use the magnetic disc device in an arbitrary attaching posture. With this arrangement, the magnetic disc device using such a bearing arrangement can enhance portability, thinning and antishock ability, and reduce noise and power consumption, thereby it is possible to provide a note-type personal computer with a high degree of reliability.

摘要翻译： 旋转轴由能够抗冲击性优异的流体动力流体径向轴承和流体动力学流体推力轴承可旋转地支撑，轴承装置，其中轴的平移模式中的振动由施加到旋转体的不平衡力引起的振动分量之中 轴由径向轴承支撑，锥形模式的振动由推力轴承支撑，磁流体用作润滑油，永磁体位于径向轴承和推力轴承之间，以便施加磁吸力 旋转轴和推力轴承之间的力，以便执行轴向定位，以便以任意的安装姿势使用磁盘装置。 通过这种布置，使用这种轴承装置的磁盘装置可以提高便携性，变薄和抗震能力，并且降低噪声和功耗，从而可以提供具有高度可靠性的笔记型个人计算机。

公开(公告)号：US06771460B2

公开(公告)日：2004-08-03

申请号：US10214576

申请日：2002-08-09

申请人： Katsutoshi Nii ,  Masaru Muranishi ,  Shozo Saegusa ,  Tsuyoshi Takahashi ,  Kenji Tomida ,  Takashi Matsuki ,  Yuuichi Yanagase ,  Mitsuyuki Tsuyuki ,  Shinobu Yoshida ,  Hiroshi Nishida ,  Kazuhiko Kawakami

发明人： Katsutoshi Nii ,  Masaru Muranishi ,  Shozo Saegusa ,  Tsuyoshi Takahashi ,  Kenji Tomida ,  Takashi Matsuki ,  Yuuichi Yanagase ,  Mitsuyuki Tsuyuki ,  Shinobu Yoshida ,  Hiroshi Nishida ,  Kazuhiko Kawakami

IPC分类号： G11B1920

CPC分类号： H02K7/09 ,  F16C17/028 ,  F16C17/045 ,  F16C17/047 ,  F16C17/10 ,  F16C17/26 ,  F16C33/1035 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2009 ,  G11B19/2036 ,  H02K7/085

摘要： A spindle motor for magnetic disc device includes a hub having an inside and an outer peripheral side on which a magnetic disc is mounted, a rotary shaft having an axial direction and coupled with the hub so as to be integrally rotated therewith, with the motor being arranged on the inside of the hub. The hub, the rotary shaft and a part of the motor constitute a rotary body. A radial bearing having a length in the axial direction of the rotary shaft, for supporting the rotary body in a direction crossing the rotary shaft, and a thrust bearing for supporting the rotary body in the axial direction of the rotary shaft are provided. The thrust bearing has an outer diameter greater than the length of the radial bearing, and is arranged at a position which is inside of the motor and diametrically inward of the hub.

摘要翻译： 一种用于磁盘装置的主轴电动机包括具有安装有磁盘的内周侧和外周侧的轮毂，具有轴向并与轮毂一体旋转的旋转轴，其中电机为 布置在轮毂的内侧。 轮毂，旋转轴和马达的一部分构成旋转体。 本发明提供一种径向轴承，该径向轴承具有沿着旋转轴的轴向的长度，用于沿与该旋转轴相交叉的方向支撑旋转体，以及用于在旋转轴的轴向方向上支撑旋转体的止推轴承。 推力轴承的外径大于径向轴承的长度，并且布置在位于马达内部且径向向内的毂的位置。

公开(公告)号：US06680814B2

公开(公告)日：2004-01-20

申请号：US10232690

申请日：2002-09-03

申请人： Katsutoshi Nii ,  Masaru Muranishi ,  Shozo Saegusa ,  Tsuyoshi Takahashi ,  Kenji Tomida ,  Takashi Matsuki ,  Yuuichi Yanagase ,  Mitsuyuki Tsuyuki ,  Shinobu Yoshida ,  Hiroshi Nishida ,  Kazuhiko Kawakami

发明人： Katsutoshi Nii ,  Masaru Muranishi ,  Shozo Saegusa ,  Tsuyoshi Takahashi ,  Kenji Tomida ,  Takashi Matsuki ,  Yuuichi Yanagase ,  Mitsuyuki Tsuyuki ,  Shinobu Yoshida ,  Hiroshi Nishida ,  Kazuhiko Kawakami

IPC分类号： G11B1920

CPC分类号： H02K7/09 ,  F16C17/028 ,  F16C17/045 ,  F16C17/047 ,  F16C17/10 ,  F16C17/26 ,  F16C33/1035 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2009 ,  G11B19/2036 ,  H02K7/085

摘要： A spindle motor used in a magnetic disc apparatus having a hub to which a magnetic disc is mounted and a rotary shaft to which the hub is fixed. The rotary shaft is located in a bearing casing having one end opened and the other end closed by a hydrodynamic pressure radial bearing, the rotary shaft being supported by a hydrodynamic pressure thrust bearing and the hydrodynamic pressure radial bearing. An inner diameter D and a width L of the hydrodynamic pressure radial bearing having a relationship of L/D

摘要翻译： 在具有安装有磁盘的轮毂的磁盘装置中使用的主轴电动机和固定有轮毂的旋转轴。 旋转轴位于轴承壳体中，其一端打开，另一端由流体动压力径向轴承封闭，旋转轴由流体动压推力轴承和流体动压力径向轴承支撑。 具有L / D <1的关系的流体动压力径向轴承的内径D和宽度L。

公开(公告)号：US06243230B1

公开(公告)日：2001-06-05

申请号：US09277163

申请日：1999-03-26

申请人： Katsutoshi Nii ,  Kenji Tomida ,  Hiroshi Nishida ,  Kouki Uefune ,  Yuuichi Yanagase ,  Masaru Muranishi ,  Takashi Kouno ,  Kazuhiko Kawakami ,  Hisanobu Kanamaru ,  Noriyuki Kumasaka

发明人： Katsutoshi Nii ,  Kenji Tomida ,  Hiroshi Nishida ,  Kouki Uefune ,  Yuuichi Yanagase ,  Masaru Muranishi ,  Takashi Kouno ,  Kazuhiko Kawakami ,  Hisanobu Kanamaru ,  Noriyuki Kumasaka

IPC分类号： G11B1702

CPC分类号： H02K5/1675 ,  F16C17/028 ,  F16C33/1075 ,  F16C2370/12 ,  G11B19/2018

摘要： A disk drive unit includes a rotary member, which has a spindle, and has an information-recording disk fixedly mounted thereon, and a bearing unit rotatably supporting the spindle. The bearing unit includes a radial bearing device, provided in opposed relation to an outer peripheral surface of the spindle, and a thrust bearing device provided in opposed relation to a distal end surface of the spindle. The radial bearing device has a concentric arc-shaped bearing surface, which is concentric with the circular outer periphery of the spindle, and a non-concentric arc-shaped bearing surface which is non-concentric with the circular outer periphery of the spindle. The disk drive unit further includes a motor for imparting a rotational force to the spindle, and a lubricating fluid filled in the bearing unit.

摘要翻译： 磁盘驱动单元包括具有主轴的旋转构件，并且具有固定地安装在其上的信息记录盘，以及可旋转地支撑心轴的轴承单元。 轴承单元包括与主轴的外周表面相对设置的径向轴承装置，以及与主轴的远端表面相对设置的止推轴承装置。 径向轴承装置具有与心轴的圆形外周同心的同心圆弧状的支承面，以及与心轴的圆形外周不同心的非同心圆弧状的支承面。 盘驱动单元还包括用于向主轴施加旋转力的马达和填充在轴承单元中的润滑流体。

公开(公告)号：US06369981B2

公开(公告)日：2002-04-09

申请号：US09975265

申请日：2001-10-12

申请人： Katsutoshi Nii ,  Kenji Tomida ,  Hiroshi Nishida ,  Kouki Uefune ,  Yuuichi Yanagase ,  Masaru Muranishi ,  Takashi Kouno ,  Kazuhiko Kawakami ,  Hisanobu Kanamaru ,  Noriyuki Kumasaka

发明人： Katsutoshi Nii ,  Kenji Tomida ,  Hiroshi Nishida ,  Kouki Uefune ,  Yuuichi Yanagase ,  Masaru Muranishi ,  Takashi Kouno ,  Kazuhiko Kawakami ,  Hisanobu Kanamaru ,  Noriyuki Kumasaka

IPC分类号： G11B1702

CPC分类号： H02K5/1675 ,  F16C17/028 ,  F16C33/1075 ,  F16C2370/12 ,  G11B19/2018

摘要： A disk drive unit includes a rotary member, which has a spindle, and has an information-recording disk fixedly mounted thereon, and a bearing unit rotatably supporting the spindle. The bearing unit includes a radial bearing device, provided in opposed relation to an outer peripheral surface of the spindle, and a thrust bearing device provided in opposed relation to a distal end surface of the spindle. The radial bearing device has a concentric arc-shaped bearing surface, which is concentric with the circular outer periphery of the spindle, and a non-concentric arc-shaped bearing surface which is non-concentric with the circular outer periphery of the spindle. The disk drive unit further includes a motor for imparting a rotational force to the spindle, and a lubricating fluid filled in the bearing unit.

公开(公告)号：US06369980B2

公开(公告)日：2002-04-09

申请号：US09836457

申请日：2001-04-18

申请人： Katsutoshi Nii ,  Kenji Tomida ,  Hiroshi Nishida ,  Kouki Uefune ,  Yuuichi Yanagase ,  Masaru Muranishi ,  Takashi Kouno ,  Kazuhiko Kawakami ,  Hisanobu Kanamaru ,  Noriyuki Kumasaka

发明人： Katsutoshi Nii ,  Kenji Tomida ,  Hiroshi Nishida ,  Kouki Uefune ,  Yuuichi Yanagase ,  Masaru Muranishi ,  Takashi Kouno ,  Kazuhiko Kawakami ,  Hisanobu Kanamaru ,  Noriyuki Kumasaka

IPC分类号： G11B1702

CPC分类号： H02K5/1675 ,  F16C17/028 ,  F16C33/1075 ,  F16C2370/12 ,  G11B19/2018

摘要： A disk drive unit includes a rotary member, which has a spindle, and has an information-recording disk fixedly mounted thereon, and a bearing unit rotatably supporting the spindle. The bearing unit includes a radial bearing device, provided in opposed relation to an outer peripheral surface of the spindle, and a thrust bearing device provided in opposed relation to a distal end surface of the spindle. The radial bearing device has a concentric arc-shaped bearing surface, which is concentric with the circular outer periphery of the spindle, and a non-concentric arc-shaped bearing surface which is non-concentric with the circular outer periphery of the spindle. The disk drive unit further includes a motor for imparting a rotational force to the spindle, and a lubricating fluid filled in the bearing unit.

摘要翻译： 磁盘驱动单元包括具有主轴的旋转构件，并且具有固定地安装在其上的信息记录盘，以及可旋转地支撑心轴的轴承单元。 轴承单元包括与主轴的外周表面相对设置的径向轴承装置，以及与主轴的远端表面相对设置的止推轴承装置。 径向轴承装置具有与心轴的圆形外周同心的同心圆弧状的支承面，以及与心轴的圆形外周不同心的非同心圆弧状的支承面。 盘驱动单元还包括用于向主轴施加旋转力的马达和填充在轴承单元中的润滑流体。

公开(公告)号：US06356408B1

公开(公告)日：2002-03-12

申请号：US09388439

申请日：1999-09-02

申请人： Katsutoshi Nii ,  Masaru Muranishi ,  Kenji Tomida ,  Kouki Uefune ,  Shozo Saegusa ,  Yuuichi Yanagase

发明人： Katsutoshi Nii ,  Masaru Muranishi ,  Kenji Tomida ,  Kouki Uefune ,  Shozo Saegusa ,  Yuuichi Yanagase

IPC分类号： G11B1702

CPC分类号： F16C33/107 ,  F16C17/045 ,  F16C33/1035 ,  F16C2370/12 ,  G11B19/2009 ,  G11B25/043 ,  G11B33/1446 ,  G11B33/148 ,  G11B33/1486 ,  H02K5/1675 ,  Y10T29/49025

摘要： In a magnetic disk apparatus, the spindle motor is provided with a hole that penetrates the hub in the axial direction thereof. The hole permits fluid pressure on the outside and inside of the hub to become balanced, reducing the axial fluid force caused by the rotation of the spindle motor. The apparatus further includes a bearing provided with a groove for dynamic pressure generation and a magnetic lubrication fluid which, in combination with a permanent magnet, prevents oil leakage and scattering.

摘要翻译： 在磁盘装置中，主轴电机设置有沿其轴向方向穿过轮毂的孔。 该孔允许轮毂的外部和内部的流体压力平衡，减少由主轴电动机的旋转引起的轴向流体力。 该装置还包括具有用于动态压力产生的凹槽的轴承和与永久磁铁组合防止漏油和散射的磁性润滑流体。

公开(公告)号：US5508805A

公开(公告)日：1996-04-16

申请号：US267431

申请日：1994-06-29

申请人： Masaru Muranishi ,  Hidehiko Kando ,  Mamoru Kainuma ,  Katsuhiko Kimura ,  Shozo Saegusa ,  Katsuyuki Tanaka

发明人： Masaru Muranishi ,  Hidehiko Kando ,  Mamoru Kainuma ,  Katsuhiko Kimura ,  Shozo Saegusa ,  Katsuyuki Tanaka

IPC分类号： G01B9/02 ,  G01N21/45 ,  G01Q30/02 ,  G01Q60/00 ,  G01Q60/18 ,  G01Q60/22 ,  H01J3/14

CPC分类号： G01Q60/22 ,  B82Y20/00 ,  B82Y35/00 ,  Y10S977/861 ,  Y10S977/868

摘要： In an optical scanning type tunneling microscope, reference light is prepared in addition to light used to be projected to a sample, and this reference light and also light picked up from an optical probe are caused to interfere with each other. As a result, phase information of light about a region having a very smaller dimension than a wavelength of the light irradiated from alight source can be acquired.

摘要翻译： 在光扫描型隧道显微镜中，除了用于投射到样品的光之外，还准备参考光，并且使该参考光以及从光学探针拾取的光彼此干涉。 结果，可以获得关于具有比从光源照射的光的波长小的尺寸的区域的光的相位信息。

公开(公告)号：US5781576A

公开(公告)日：1998-07-14

申请号：US697002

申请日：1996-08-16

申请人： Katsuhiko Kimura ,  Shozo Saegusa ,  Masaru Muranishi

发明人： Katsuhiko Kimura ,  Shozo Saegusa ,  Masaru Muranishi

IPC分类号： G11B7/09 ,  G11B7/095 ,  G11B7/135 ,  H01S5/00 ,  H01S5/022 ,  H01S5/042 ,  H01S5/062 ,  H01S5/0625 ,  H01S5/068 ,  H01S5/0683 ,  H01S5/183 ,  H01S3/18

CPC分类号： H01S5/0683 ,  G11B7/0956 ,  G11B7/127 ,  H01L2224/48091 ,  H01S5/0207 ,  H01S5/02212 ,  H01S5/0425 ,  H01S5/06236 ,  H01S5/0624 ,  H01S5/06243 ,  H01S5/06246 ,  H01S5/0625 ,  H01S5/06821 ,  H01S5/18305

摘要： An optical disk drive has an aberration detector and an aberration correction circuit. A semiconductor laser device made of semiconductor crystals constituting a semiconductor laser light source includes an active layer for performing light amplification through current injection and guiding light in waveguide, a reflection member for reflecting light into said active layer, and a top electrode and a bottom electrode used for current injection to the active layer, wherein the top electrode is divided into a main electrode and a plurality of subsidiary electrodes, and injection current to the subsidiary electrodes is controlled so as to correct an aberration generated at an optical focussing system and an optical disk.

摘要翻译： 光盘驱动器具有像差检测器和像差校正电路。 构成半导体激光光源的半导体晶体的半导体激光装置具有通过电流注入进行光放大的有源层和波导中的引导光，将光反射到所述有源层的反射部件，以及上部电极和下部电极 用于向有源层进行电流注入，其中顶部电极被分成主电极和多个辅助电极，并且控制到辅助电极的注入电流，以便校正在光学聚焦系统和光学系统中产生的像差 磁盘。

公开(公告)号：US20060126219A1

公开(公告)日：2006-06-15

申请号：US11304258

申请日：2005-12-14

申请人： Kazuyoshi Hanada ,  Masaru Muranishi ,  Kenji Tomida ,  Yuji Ishima

发明人： Kazuyoshi Hanada ,  Masaru Muranishi ,  Kenji Tomida ,  Yuji Ishima

IPC分类号： G11B17/08

CPC分类号： G11B17/02 ,  G11B17/038

摘要： Embodiments of the invention provide a magnetic disk drive promoting even higher densities, greater capacities, and further reduction in size, while relaxing component accuracy requirements. In one embodiment, the magnetic disk drive includes a magnetic disk receiving member and a magnetic disk holding member, a magnetic disk being rotatably held with the magnetic disk clamped therebetween. The receiving member makes a line contact with a surface of the magnetic disk on a circumference of a circle formed around a rotational axis of the magnetic disk.