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：US07167338B2

公开(公告)日：2007-01-23

申请号：US10837303

申请日：2004-04-30

申请人： Hiroyuki Iwahara ,  Yasuhiro Miura ,  Mitsuhiro Izumi

发明人： Hiroyuki Iwahara ,  Yasuhiro Miura ,  Mitsuhiro Izumi

IPC分类号： G11B33/08

CPC分类号： G11B25/043 ,  G11B17/038 ,  G11B33/08

摘要： A magnetic disk apparatus for reading and writing information to a magnetic disk including a motor for rotating the magnetic disk mounted thereon; a disk-shaped clamp for mounting the magnetic disk on the motor by screw fastening; and a C-shaped balancer for adjusting the rotary balance of the magnetic disk and mounted on the outer surrounding portion of the clamp, wherein the C-shaped balancer has a generally rectangular cross-section.

摘要翻译： 一种磁盘装置，用于向包括安装在其上的磁盘旋转的电动机的磁盘读取和写入信息; 用于通过螺钉固定将磁盘安装在电动机上的盘形夹具; 以及C形平衡器，用于调节磁盘的旋转平衡并安装在夹具的外周围，其中，C形平衡器具有大致矩形的横截面。

公开(公告)号：US20050185328A1

公开(公告)日：2005-08-25

申请号：US10837303

申请日：2004-04-30

申请人： Hiroyuki Iwahara ,  Yasuhiro Miura ,  Mitsuhiro Izumi

发明人： Hiroyuki Iwahara ,  Yasuhiro Miura ,  Mitsuhiro Izumi

IPC分类号： G11B33/14 ,  G11B17/038 ,  G11B25/04 ,  G11B33/08 ,  G11B17/02

CPC分类号： G11B25/043 ,  G11B17/038 ,  G11B33/08

摘要： For a magnetic disk apparatus for reading and writing information to a magnetic disk in the present invention, the recessed portion of the cover of the magnetic disk apparatus has a two-level structure; the space between the inner surface of the recessed portion, corresponding to the region of the magnetic disk surface which the actuator arm does not traverse, and the surface of the magnetic disk is made as narrow as possible. The air flow generated in that space by the rotation of the magnetic disk is thereby suppressed and as a result, magnetic disk resonance is suppressed. Also, the noise level is further suppressed by having two layers of damping plates attached to the outer surface of the cover.

摘要翻译： 对于本发明的磁盘读取和写入磁盘的磁盘装置，磁盘装置的盖的凹部具有两层结构; 使凹部的内表面与致动器臂不穿过的磁盘表面的区域相对应的空间与磁盘的表面尽可能的窄。 因此，通过磁盘的旋转而在该空间中产生的空气流被抑制，结果，磁盘谐振被抑制。 此外，通过将两层阻尼板附接到盖的外表面来进一步抑制噪声水平。

公开(公告)号：US06757131B1

公开(公告)日：2004-06-29

申请号：US09676855

申请日：2000-09-29

申请人： Hiroyuki Iwahara ,  Yasuhiro Miura ,  Mitsuhiro Izumi

发明人： Hiroyuki Iwahara ,  Yasuhiro Miura ,  Mitsuhiro Izumi

IPC分类号： G11B1702

CPC分类号： G11B25/043 ,  G11B17/038 ,  G11B33/08

摘要： For a magnetic disk apparatus for reading and writing information to a magnetic disk in the present invention, the recessed portion of the cover of the magnetic disk apparatus has a two-level structure; the space between the inner surface of the recessed portion, corresponding to the region of the magnetic disk surface which the actuator arm does not traverse, and the surface of the magnetic disk is made as narrow as possible. The air flow generated in that space by the rotation of the magnetic disk is thereby suppressed and as a result, magnetic disk resonance is suppressed. Also, the noise level is further suppressed by having two layers of damping plates attached to the outer surface of the cover.

摘要翻译： 对于本发明的磁盘读取和写入磁盘的磁盘装置，磁盘装置的盖的凹部具有两层结构; 使凹部的内表面与致动器臂不穿过的磁盘表面的区域相对应的空间与磁盘的表面尽可能的窄。 因此，通过磁盘的旋转而在该空间中产生的空气流被抑制，结果，磁盘谐振被抑制。 此外，通过将两层阻尼板附接到盖的外表面来进一步抑制噪声水平。

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：US07139154B2

公开(公告)日：2006-11-21

申请号：US10606844

申请日：2003-06-27

申请人： Hiroyuki Iwahara ,  Mitsuhiro Izumi

发明人： Hiroyuki Iwahara ,  Mitsuhiro Izumi

IPC分类号： G11B5/48 ,  G11B5/55 ,  G11B21/16 ,  G11B21/21 ,  G11B33/14

CPC分类号： H05K1/0281 ,  G11B5/4833 ,  G11B5/5582 ,  H05K1/0271 ,  H05K2201/0133 ,  H05K2201/2009 ,  H05K2201/2045

摘要： A disc unit includes a head that records information onto and/or reproduces information from a disc, a suspension that includes a top surface and a side surface, and supports the head on the top surface, a flexible printed circuit board attached to the side surface of the suspension through an air gap, the flexible printed circuit board transmitting a signal indicative of the information to and from the head, and a damper that damps oscillation of the flexible printed circuit board.

摘要翻译： 光盘单元包括一个头盘，用于将信息记录在盘上和/或从光盘再现信息，包括顶表面和侧表面的悬架，并且在顶表面上支撑头部;附接到侧表面的柔性印刷电路板 通过空气间隙的悬架的柔性印刷电路板，柔性印刷电路板将表示信息的信号传送到头部，以及阻尼器，其阻止柔性印刷电路板的振荡。

公开(公告)号：US06992864B2

公开(公告)日：2006-01-31

申请号：US10707889

申请日：2004-01-21

申请人： Hisashi Kaneko ,  Hiroyuki Iwahara ,  Yukihiro Komura ,  Mitsuhiro Izumi ,  Shinji Fujimoto

发明人： Hisashi Kaneko ,  Hiroyuki Iwahara ,  Yukihiro Komura ,  Mitsuhiro Izumi ,  Shinji Fujimoto

IPC分类号： G11B5/48

CPC分类号： G11B5/4846 ,  G11B5/4853 ,  G11B5/486 ,  H05K1/0201 ,  H05K1/0203 ,  H05K1/0281 ,  H05K1/147 ,  H05K1/189 ,  H05K3/0061 ,  H05K3/363 ,  H05K2201/062 ,  H05K2201/10689

摘要： A thermal component is mounted on the front surface of an isolator sheet within a first specific area. A thermally-conductive material is located on the back surface of the isolator sheet on the back of the first specific area. An electrically-conductive material is located on the front surface of the isolator sheet within a second specific area. A thermally-insulating material is located on the back surface of the isolator sheet on the back of the second specific area. The flexible printed circuit board unit of this type allows heat of the thermal component to efficiently radiate from the thermally-conductive material. An increase in temperature can be suppressed in the thermal component. Heat can reliably stay in the electrically-conductive material when a solder material is applied to the surface of the electrically-conductive material. The solder material is allowed to reliably fuse.

摘要翻译： 热分量安装在第一特定区域内的隔离片的前表面上。 导热材料位于第一特定区域背面的隔离片的背面上。 导电材料位于第二特定区域内的绝缘片的前表面上。 绝热材料位于第二特定区域背面的隔离片的背面。 这种柔性印刷电路板单元允许热部件的热量有效地从导热材料辐射。 在热分量中可以抑制温度的升高。 当将焊料材料施加到导电材料的表面时，热可以可靠地停留在导电材料中。 允许焊料材料可靠地熔断。

公开(公告)号：US20100154509A1

公开(公告)日：2010-06-24

申请号：US12160474

申请日：2006-12-27

申请人： Morito Asano ,  Shinobu Sugisaki ,  Mitsuhiro Izumi ,  Kouichi Kitaura ,  Kouichi Satoya ,  Mamoru Yoshioka

发明人： Morito Asano ,  Shinobu Sugisaki ,  Mitsuhiro Izumi ,  Kouichi Kitaura ,  Kouichi Satoya ,  Mamoru Yoshioka

IPC分类号： G01M15/04

CPC分类号： F02D35/021 ,  F02D41/06 ,  F02D41/1458 ,  F02D41/1495

摘要： In a method for determining an air fuel ratio of an internal combustion engine on the basis of an ion current, for detecting an ion current generated per ignition within a combustion chamber of the internal combustion engine, the method measures a generation period in which the ion current is greater than a determination value set as long as the ion current is generated, computes a divisor for computing a rate of fluctuation of the generation period of the ion current on the basis of a plurality of measured generation periods, computes the rate of fluctuation of the generation period of the ion current by weighing in a direction of increasing the computed divisor, and determines that an air fuel ratio is excessively high in the case that the calculated rate of fluctuation is equal to or more than a predetermined value.

摘要翻译： 在用于基于离子电流确定内燃机的空燃比的方法中，用于检测在内燃机的燃烧室内每次点火产生的离子电流的方法，该方法测量产生时间，其中离子 只要产生离子电流，电流大于确定值，就计算用于计算离子电流的产生周期的波动率的除数，根据多个测量的生成周期计算出波动率 通过在增加计算除数的方向上进行加权来计算离子电流的产生周期，并且在计算出的波动率等于或大于预定值的情况下确定空燃比过高。

公开(公告)号：US07414815B2

公开(公告)日：2008-08-19

申请号：US11819427

申请日：2007-06-27

申请人： Shinji Fujimoto ,  Masato Shibuya ,  Hisashi Kaneko ,  Tsuneyori Ino ,  Yukihiro Komura ,  Mitsuhiro Izumi ,  Kei Funabashi

发明人： Shinji Fujimoto ,  Masato Shibuya ,  Hisashi Kaneko ,  Tsuneyori Ino ,  Yukihiro Komura ,  Mitsuhiro Izumi ,  Kei Funabashi

IPC分类号： G11B5/55 ,  G11B21/22

CPC分类号： G11B5/5569 ,  G11B5/54

摘要： A magnetic disk device comprises a magnetic disk in which a data zone is formed. An actuator has a voice coil and a head slider carrying a magnetic head, the actuator being swung to move the magnetic head over the disk between an innermost position of the data zone and an outermost position of the data zone. A magnet has a magnetization center and is opposed to the voice coil so that a voice coil motor which swings the actuator is formed, the magnet having a north pole and a south pole confronting each other via the magnetization center. The magnetic disk device is provided so that a deviation of a center of the voice coil from the magnetization center when the magnetic head is in the innermost position of the data zone is substantially equal to a deviation of the center of the voice coil from the magnetization center when the magnetic head is in the outermost position of the data zone.

摘要翻译： 磁盘装置包括形成数据区的磁盘。 致动器具有音圈和携带磁头的磁头滑块，所述致动器摆动以使磁头在数据区的最内位置和数据区的最外位置之间的磁盘上移动。 磁体具有磁化中心并且与音圈相对，从而形成摆动致动器的音圈电动机，磁体具有通过磁化中心彼此相对的北极和南极。 提供磁盘装置，使得当磁头处于数据区的最内位置时，音圈的中心与磁化中心的偏差基本上等于音圈的中心与磁化的偏差 当磁头位于数据区的最外侧位置时居中。

公开(公告)号：US07400472B2

公开(公告)日：2008-07-15

申请号：US11504489

申请日：2006-08-15

申请人： Yukihiro Komura ,  Mitsuhiro Izumi ,  Hiroshi Ishiyama

发明人： Yukihiro Komura ,  Mitsuhiro Izumi ,  Hiroshi Ishiyama

IPC分类号： G11B5/48

CPC分类号： G11B5/486 ,  G11B5/4846 ,  H05K3/363 ,  H05K2201/058 ,  H05K2201/09145 ,  H05K2203/167

摘要： A guide pin is set in common in first and second voids defined in the peripheries of first and second flexible printed wiring boards. The second void has the shape identical to the shape of the first void. When the guide pin rotates around a rotation axis so as to bring the guide pin in contact with the peripheries of the first and second flexible printed wiring boards inside the first and second voids, the first and second flexible printed wiring boards can be arranged. This leads to arrangement of the first and second flexible printed wiring boards at a time in a facilitated manner.

摘要翻译： 在第一和第二柔性印刷线路板的周边限定的第一和第二空隙中，引导销共同设置。 第二空隙具有与第一空隙的形状相同的形状。 当引导销围绕旋转轴线旋转以使引导销与第一和第二柔性印刷线路板的周边接触在第一和第二空隙内部时，可布置第一和第二柔性印刷线路板。 这导致了以便利的方式一次布置第一和第二柔性印刷线路板。