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：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：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：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：US06226153B1

公开(公告)日：2001-05-01

申请号：US09140350

申请日：1998-08-26

申请人： Mikio Tokuyama ,  Yukio Katou ,  Jyousei Shimizu ,  Yasuo Kojima ,  Hiroshi Nishida ,  Kouki Uefune

发明人： Mikio Tokuyama ,  Yukio Katou ,  Jyousei Shimizu ,  Yasuo Kojima ,  Hiroshi Nishida ,  Kouki Uefune

IPC分类号： G11B560

CPC分类号： G11B5/4826 ,  G11B5/4833

摘要： If a large external impact is applied to a magnetic disc apparatus, a slider jumps from a disc surface and rotates. When the slider jumps and rotates, its edges re-contact the disc surface to damage this surface. To reduce the rotation angle of the slider to control its position if an impact is effected, the present invention provides a roof on a load arm to reduce the contact angle at which the slider contacts the disc surface in order to relax the impact upon a contact.

摘要翻译： 如果对磁盘装置施加大的外部冲击，则滑块从盘表面跳转并旋转。 当滑块跳转并旋转时，其边缘会重新接触光盘表面以损坏该表面。 为了减小滑块的旋转角度以控制其位置，如果发生冲击，本发明在负载臂上提供一个屋顶，以减小滑块与盘表面接触的接触角，以便放松对接触的冲击 。

公开(公告)号：US07885039B2

公开(公告)日：2011-02-08

申请号：US12264939

申请日：2008-11-05

申请人： Mikio Tokuyama ,  Yukio Katou ,  Jyousei Shimizu ,  Yasuo Kojima ,  Hiroshi Nishida ,  Kouki Uefune

发明人： Mikio Tokuyama ,  Yukio Katou ,  Jyousei Shimizu ,  Yasuo Kojima ,  Hiroshi Nishida ,  Kouki Uefune

IPC分类号： G11B5/55

CPC分类号： G11B5/4826 ,  G11B5/4833

摘要： A magnetic-head supporting mechanism includes a slider having a chamfered bleed portion, a mounting portion on which the slider is mounted, a flexible finger portion extending in a longitudinal direction and supporting the mounting portion, a load beam extending in the longitudinal direction that connects at an end to a positioning mechanism, and that applies a load to the slider, and a regulating member extending from the load beam in the longitudinal direction for preventing change of an attitude of the slider when an angular attitude of the slider exceeds a predetermined angle. The regulating member extends over and above the flexible finger portion and over and above the slider and has an end in the longitudinal direction at a position approximately equal to an end of the flexible finger portion in the longitudinal direction.

摘要翻译： 磁头支撑机构包括具有倒角排出部分的滑块，安装滑块的安装部分，沿纵向方向延伸并支撑安装部分的柔性指状部分，沿纵向方向延伸的负载梁，其连接 在定位机构的端部，并且对滑块施加载荷，以及限制构件，其沿着纵向方向从负载梁延伸，以防止滑块的角度姿态超过预定角度时滑块的姿态变化 。 调节构件在柔性指状部分上方延伸并且在滑块上方和上方延伸，并且在纵向方向上具有在纵向方向上大致等于柔性指状部分的端部的位置的端部。

公开(公告)号：US20070230057A1

公开(公告)日：2007-10-04

申请号：US11806119

申请日：2007-05-30

申请人： Mikio Tokuyama ,  Yukio Katou ,  Jyousei Shimizu ,  Yasuo Kojima ,  Hiroshi Nishida ,  Kouki Uefune

发明人： Mikio Tokuyama ,  Yukio Katou ,  Jyousei Shimizu ,  Yasuo Kojima ,  Hiroshi Nishida ,  Kouki Uefune

IPC分类号： G11B5/48

CPC分类号： G11B5/4826 ,  G11B5/4833

摘要： A magnetic disc apparatus having a magnetic disc on which information is recorded, a magnetic head and a magnetic head supporting mechanism. The magnetic head supporting mechanism includes a slider having the magnetic head mounted thereon, a load beam having an arm mounting portion and a pivot, and a gimbal having a mounting portion on which the slider is mounted, two flexible finger portions spaced from the load beam and supporting the mounting portion so that the slider is rotatable with respect to the pivot, and a base end portion which is joined to the load beam. The load beam has two openings formed therein in proximity to the pivot which enable viewing of a back surface of the mounting portion which is opposite to a surface of the mounting portion of the gimbal on which the slider is mounted.

摘要翻译： 一种具有记录有信息的磁盘的磁盘装置，磁头和磁头支撑机构。 磁头支撑机构包括：安装有磁头的滑块，具有臂安装部分和枢轴的负载梁，以及具有安装滑块的安装部分的万向节，具有与负载梁间隔开的两个柔性指状部分 并且支撑所述安装部分，使得所述滑块能够相对于所述枢轴转动;以及基端部，其与所述负载梁接合。 负载梁具有形成在其中的枢轴附近的两个开口，其能够观察安装部分的后表面，该背面与安装滑块的万向架的安装部分的表面相对。

公开(公告)号：US07248439B2

公开(公告)日：2007-07-24

申请号：US11237823

申请日：2005-09-29

申请人： Mikio Tokuyama ,  Yukio Katou ,  Jyousei Shimizu ,  Yasuo Kojima ,  Hiroshi Nishida ,  Kouki Uefune

发明人： Mikio Tokuyama ,  Yukio Katou ,  Jyousei Shimizu ,  Yasuo Kojima ,  Hiroshi Nishida ,  Kouki Uefune

IPC分类号： G11B5/48

CPC分类号： G11B5/4826 ,  G11B5/4833

摘要： A magnetic disc apparatus having a magnetic head supporting mechanism which includes a slider, a load beam having a spring portion and a pivot, and a gimbal having a mounting portion on which the slider is mounted. The gimbal has flexible finger portions spaced from the load beam which support the mounting portion so that the slider is rotatable with respect to the pivot, and a base end portion which is joined to the load beam. The load beam has elongation portions extending with respect to both sides of the pivot and being connected together in a proximity of a tip end portion of the flexible finger portions so as to be spaced from the pivot of the gimbal and for delimiting a window. The pivot is provided on a projection portion of the load beam which projects in the window from a spring portion side of the window.

摘要翻译： 一种具有磁头支撑机构的磁盘装置，其包括滑块，具有弹簧部分和枢轴的负载梁，以及具有安装滑块的安装部分的万向架。 万向节具有与负载梁间隔开的柔性指状部分，其支撑安装部分，使得滑块相对于枢轴可旋转，以及基端部分，其连接到负载梁。 负载梁具有相对于枢轴的两侧延伸的延伸部分，并且在柔性指状部分的末端部分附近连接在一起，以便与万向节的枢轴间隔开并限定窗口。 枢轴设置在负载梁的从窗口的弹簧部分侧突出在窗口中的突出部分上。