公开(公告)号：US06466400B1

公开(公告)日：2002-10-15

申请号：US09712362

申请日：2000-11-14

申请人： Hiroyuki Iwahara ,  Keiji Aruga ,  Yoshinori Ogawa ,  Yoshiaki Koizumi ,  Mitsuhiro Izumi ,  Mitsuaki Yoshida ,  Yasuhiro Miura

发明人： Hiroyuki Iwahara ,  Keiji Aruga ,  Yoshinori Ogawa ,  Yoshiaki Koizumi ,  Mitsuhiro Izumi ,  Mitsuaki Yoshida ,  Yasuhiro Miura

IPC分类号： G11B1702

CPC分类号： G11B17/0287 ,  G11B33/08

摘要： Disclosed herein is a magnetic disk drive including a spindle shaft fixed to a base, a coil mounted on the spindle shaft, a spindle hub rotatably mounted on the spindle shaft, a magnetic disk fixed to the spindle hub and having a plurality of tracks, a permanent magnet fixed to the spindle hub, a magnetic head for reading/writing information from/to the magnetic disk, and an actuator for moving the magnetic head across the tracks of the magnetic disk. The magnetic disk drive further includes a cover fixed to the base and having a hole at a position corresponding to the spindle shaft, a first metal washer placed on the cover at a portion around the hole, a second metal washer for sandwiching the cover at the portion around the hole in cooperation with the first metal washer, and a screw for securing the first and second metal washers to the spindle shaft.

摘要翻译： 这里公开了一种磁盘驱动器，其包括固定到基座的主轴，安装在主轴上的线圈，可旋转地安装在主轴上的主轴毂，固定到主轴毂并具有多个轨道的磁盘， 固定到主轴毂的永磁体，用于从/向磁盘读取/写入信息的磁头，以及用于使磁头移动通过磁盘的轨道的致动器。 所述磁盘驱动器还包括固定到所述基座并且在与所述主轴相对应的位置处具有孔的盖，在所述孔周围的部分上放置在所述盖上的第一金属垫圈，用于将所述盖夹在所述盖上的第二金属垫圈 与第一金属垫圈相配合的孔周围，以及用于将第一和第二金属垫圈固定到主轴上的螺钉。

公开(公告)号：US06373654B1

公开(公告)日：2002-04-16

申请号：US09603872

申请日：2000-06-26

申请人： Hiroyuki Iwahara ,  Keiji Aruga ,  Mitsuaki Yoshida ,  Yasuyoshi Asao ,  Yasuhiro Miura ,  Tsuneyori Ino ,  Terushige Arai ,  Kazunori Tochiyama

发明人： Hiroyuki Iwahara ,  Keiji Aruga ,  Mitsuaki Yoshida ,  Yasuyoshi Asao ,  Yasuhiro Miura ,  Tsuneyori Ino ,  Terushige Arai ,  Kazunori Tochiyama

IPC分类号： G11B3308

CPC分类号： G11B33/121 ,  G11B5/59633 ,  G11B25/043 ,  G11B33/08

摘要： A disk device has a housing structure capable of reducing unnecessary vibrations of the base of the disk device by improving the rigidity thereof. A bath-tub type base of the disk device includes a damping structure on the bottom or on the sides adjacent to the bottom for attenuating the vibrations of the base. Apparatus for writing a reference signal into the disk of the device using a reference head with a head insertion hole formed in the base is also provided.

摘要翻译： 磁盘装置具有壳体结构，其能够通过提高其刚性来减少磁盘装置的基座的不必要的振动。 碟形装置的浴盆型底座包括在底部或与底部相邻的侧面上的减振结构，用于衰减底座的振动。 还提供了使用具有形成在基座中的头插入孔的参考头将参考信号写入装置的盘的装置。

公开(公告)号：US06487038B1

公开(公告)日：2002-11-26

申请号：US09436928

申请日：1999-11-09

申请人： Mitsuhiro Izumi ,  Hiroyuki Iwahara ,  Keiji Aruga ,  Shinji Fujimoto

发明人： Mitsuhiro Izumi ,  Hiroyuki Iwahara ,  Keiji Aruga ,  Shinji Fujimoto

IPC分类号： G11B1702

CPC分类号： G11B25/043

摘要： A recording disk drive includes a shroud wall spaced from a peripheral end of the recording disk by a gap equal to or smaller than 0.5 mm. A rectification groove is formed in the shroud wall at a position adjacent an area opposed to the peripheral end of the recording disk. Reduction in gap between the peripheral end of the recording disk and the shroud wall serves to reduce the amplitude of the flutter to be induced in the rotating recording disk. Moreover, as the gap gets smaller, the flutter reduces at a higher rate in response to increase of the depth of the rectification groove. Specifically, if the gap between the peripheral end of the recording disk and the shroud wall is set equal to or smaller than 0.5 mm, the groove can be made shallower so as to still efficiently suppress the flutter of the rotating recording disk.

摘要翻译： 记录盘驱动器包括与记录盘的外周端隔开等于或小于0.5mm的间隙的护罩壁。 整流槽形成在护罩壁上与记录盘的周边相对的区域附近的位置。 记录盘的外周端与护罩壁之间的间隙的减小用于减小在旋转的记录盘中引起的颤动的振幅。 此外，随着间隙变小，响应于整流槽的深度的增加，振动以更高的速率降低。 具体而言，如果将记录盘的外周端与护罩壁之间的间隙设定为0.5mm以下，则可以使槽变浅，以便有效地抑制旋转记录盘的颤动。

公开(公告)号：US06567237B2

公开(公告)日：2003-05-20

申请号：US09792332

申请日：2001-02-22

申请人： Hiroyuki Iwahara ,  Keiji Aruga

发明人： Hiroyuki Iwahara ,  Keiji Aruga

IPC分类号： G11B3314

CPC分类号： G11B25/043 ,  G11B33/08

摘要： A cover seal seals an opening of a housing body and encloses a cover for the opening in cooperation with the housing body. The rigidity of the cover seal is reinforced by a metallic sheet or a multiplayer synthetic resin sheet, so that vibration of the cover seal is prevented even if an air stream is a seam between the housing body cover acts on the cover seal from behind.

摘要翻译： 盖密封件密封壳体的开口并且与壳体主体协作地封闭用于开口的盖。 盖密封件的刚性由金属板或多层合成树脂板增强，使得即使空气流是从外壳主体盖之间的接缝，也可防止盖密封的振动。

公开(公告)号：US06266207B1

公开(公告)日：2001-07-24

申请号：US09127215

申请日：1998-07-31

申请人： Hiroyuki Iwahara ,  Keiji Aruga

发明人： Hiroyuki Iwahara ,  Keiji Aruga

IPC分类号： G11B3314

CPC分类号： G11B25/043 ,  G11B33/08

摘要： A cover seal seals an opening of a housing body and encloses a cover for the opening in cooperation with the housing body. The rigidity of the cover seal is reinforced by a metallic sheet or a multiplayer synthetic resin sheet, so that vibration of the cover seal is prevented even if air stream in a seam between the housing body and cover acts on the cover seal from the behind.

摘要翻译： 盖密封件密封壳体的开口并且与壳体主体协作地封闭用于开口的盖。 盖密封件的刚性由金属板或多层合成树脂板增强，使得即使在壳体和盖之间的接缝中的空气流从后面起作用在盖密封上，也防止了盖密封件的振动。

公开(公告)号：US6008965A

公开(公告)日：1999-12-28

申请号：US39009

申请日：1998-03-13

申请人： Mitsuhiro Izumi ,  Tomoo Sukagawa ,  Takeshi Ohyama ,  Keiji Aruga ,  Kazuhiro Suzuki

发明人： Mitsuhiro Izumi ,  Tomoo Sukagawa ,  Takeshi Ohyama ,  Keiji Aruga ,  Kazuhiro Suzuki

IPC分类号： G11B25/04 ,  G11B33/14

CPC分类号： G11B25/043 ,  G11B33/1446

摘要： A disk drive includes a casing for enclosing at least a disk and a head. Rectification walls are disposed at corners of the casing. The walls serve to rectify an air stream generated by rotation of the disk at the periphery of the rotating disk. A bypass is defined between the side wall of the casing and at least one rectification wall. A filter is disposed in the bypass for catching dust in the air stream. A parameter d/L, where d is the width of an entrance of the bypass and L is the length of the comer along the periphery of the disk, is determined so that vibration of the rotating disk is equal to or less than an admissible value estimated from a tracking error margin. The tracking error margin is estimated from a track pitch on the disk. Reliable positioning of the head with respect to the disk can be achieved with the present invention.

摘要翻译： 磁盘驱动器包括用于至少包围磁盘和磁头的外壳。 整流壁设置在壳体的角部。 这些壁用于整流在旋转盘周边盘旋转产生的空气流。 在壳体的侧壁和至少一个整流壁之间限定旁路。 在旁路中设置过滤器，用于捕获空气流中的灰尘。 参数d / L，其中d是旁路入口的宽度，L是圆盘沿圆周长度的长度，使得旋转盘的振动等于或小于容许值 从跟踪误差边际估计。 跟踪误差容限是根据磁盘上的磁道间距来估计的。 通过本发明可以实现磁头相对于磁盘的可靠定位。

公开(公告)号：US06690549B1

公开(公告)日：2004-02-10

申请号：US09501470

申请日：2000-02-09

申请人： Koichi Aikawa ,  Tatsuro Sasamoto ,  Susumu Yoshida ,  Akihide Jinzenji ,  Tomoo Sukagawa ,  Keiji Aruga ,  Yoshiaki Koizumi ,  Yasuyoshi Asao

发明人： Koichi Aikawa ,  Tatsuro Sasamoto ,  Susumu Yoshida ,  Akihide Jinzenji ,  Tomoo Sukagawa ,  Keiji Aruga ,  Yoshiaki Koizumi ,  Yasuyoshi Asao

IPC分类号： G11B2108

CPC分类号： G11B5/4813

摘要： A magnetic disk unit has two actuators each rotating on a common rotary shaft. The two actuators are driven by a voice coil motor. The voice coil motor comprises: a magnetic circuit comprising a magnet provided for the two actuators on a common basis and two yokes, which are associated with the two actuators, respectively, said two yokes being disposed at both sides between which the magnet intervenes; and two coils provided for the two actuators, respectively.

摘要翻译： 磁盘单元具有两个在公共旋转轴上旋转的致动器。 两个致动器由音圈电机驱动。 音圈电机包括：一个磁路，包括一个共同设置的两个致动器的磁体和两个分别与两个致动器相关联的磁轭，所述两个磁轭设置在磁铁介于两个之间的两侧; 以及分别为两个致动器提供的两个线圈。

公开(公告)号：US07619854B2

公开(公告)日：2009-11-17

申请号：US11489697

申请日：2006-07-19

申请人： Keiji Watanabe ,  Keiji Aruga ,  Hiroshi Chiba

发明人： Keiji Watanabe ,  Keiji Aruga ,  Hiroshi Chiba

IPC分类号： G11B17/04

CPC分类号： G11B17/02 ,  G11B17/038

摘要： A first component defines a threaded bore. A second component is kept in contact with the first component. A clamping screw penetrates through the second component and is screwed in the threaded bore. A lubricating agent film is interposed between the threaded bore and the clamping screw. The lubricating agent film is made of a macromolecular compound having a polar end group. The lubricating agent film serves to reduce the friction between the threaded bore and the clamping screw. Generation of dust is prevented when the clamping screw is being screwed into the threaded bore. In addition, the clamping screw exhibits a larger axial force at a certain amount of a fastening torque as compared with a conventional clamping screw. A larger axial force can thus be applied to hold the second component onto the first component.

摘要翻译： 第一部件限定螺纹孔。 第二组分与第一组分保持接触。 夹紧螺钉穿过第二部件并拧入螺纹孔。 润滑剂膜介于螺纹孔和夹紧螺钉之间。 润滑剂膜由具有极性端基的高分子化合物制成。 润滑剂膜用于减小螺纹孔和夹紧螺钉之间的摩擦。 当夹紧螺丝拧入螺纹孔时，防止产生灰尘。 此外，与常规的夹紧螺钉相比，夹紧螺钉在一定量的紧固扭矩下表现出较大的轴向力。 因此可以施加较大的轴向力以将第二部件保持在第一部件上。

公开(公告)号：US07551399B2

公开(公告)日：2009-06-23

申请号：US11283729

申请日：2005-11-22

申请人： Takuma Kido ,  Keiji Aruga ,  Shinji Koganezawa ,  Toru Watanabe

发明人： Takuma Kido ,  Keiji Aruga ,  Shinji Koganezawa ,  Toru Watanabe

IPC分类号： G11B5/48

CPC分类号： G11B5/4813 ,  G11B5/4826

摘要： A plate member is made of a metal material lighter than stainless steel in a suspension for a head slider. This leads to a reduction in the weight of the suspension. The natural frequency of the suspension is thus raised. Moreover, the viscoelastic member is interposed between the front surface of the plate member and the back surface of the flexure. This structure allows either the plate member or the flexure to act as a base and the other to act as a constraining member. In other words, the plate member, the flexure and the viscoelastic member in combination act as a so-called vibration damper including constraining layers. The viscoelastic member serves to further suppress vibration of the plate member and the flexure.

摘要翻译： 板构件由用于头滑块的悬架中的不同于不锈钢的金属材料制成。 这导致悬架的重量减小。 因此悬挂的固有频率提高。 此外，粘弹性构件插入在板构件的前表面和挠曲件的后表面之间。 该结构允许板构件或挠曲件用作基座，另一个用作约束构件。 换句话说，组合的板构件，挠曲件和粘弹构件用作包括约束层的所谓的振动阻尼器。 粘弹性构件用于进一步抑制板构件的振动和挠曲。

公开(公告)号：US06543289B1

公开(公告)日：2003-04-08

申请号：US09617688

申请日：2000-07-17

申请人： Akihide Jinzenji ,  Keiji Aruga

发明人： Akihide Jinzenji ,  Keiji Aruga

IPC分类号： G01M702

CPC分类号： G01M7/045

摘要： A small-sized rotational vibration testing apparatus having a wide band of measuring frequencies and capable of directly driving a rotary table (1) to oscillate or vibrate in a rotational direction under the action of torque generated by a vibration applying mechanism. The rotary table (1) is rotatably mounted on a base (2), and a plurality of coil frames (14) each having a coil (13) attached thereto are mounted on a flange (1c) of the rotary table (1) at an equal circumferential pitch or interval about its axis of rotation. A plurality of magnetic circuits (12) are fixedly secured to the base (2) in such a manner that the center of each coil (13) is positioned at the center of an associated magnetic circuit (12).

摘要翻译： 一种小型的旋转振动试验装置，其具有宽频带的测量频率，并且能够在由振动施加机构产生的转矩的作用下直接驱动旋转台（1）在旋转方向上振动或振动。 旋转台（1）可旋转地安装在基座（2）上，并且在旋转台（1）的凸缘（1c）上安装有分别安装有线圈（13）的多个线圈架（14） 围绕其旋转轴线具有相等的圆周间距或间隔。 多个磁路（12）以每个线圈（13）的中心位于相关磁路（12）的中心的方式固定地固定到基座（2）。