公开(公告)号：US08804266B2

公开(公告)日：2014-08-12

申请号：US13357798

申请日：2012-01-25

申请人： Masao Hanya ,  Keiji Aruga

发明人： Masao Hanya ,  Keiji Aruga

IPC分类号： G11B21/02

CPC分类号： G11B5/5552

摘要： According to one embodiment, a magnetic disc apparatus includes a magnetic head which reads information stored in a magnetic disc, an arm which supports the magnetic head, and a feedback controller which controls a coarse actuator to move the magnetic head above the magnetic disc by driving the arm, a fine actuator to hold a position of the magnetic head, and a feedback path which feeds back a displacement of the actuator to a target value of the coarse actuator. The feedback controller controls decoupling of a double actuator system which adds up the coarse actuator and the fine actuator.

摘要翻译： 根据一个实施例，一种磁盘装置包括读取存储在磁盘中的信息的磁头，支撑磁头的臂，以及控制粗略致动器的反馈控制器，通过驱动将磁头移动到磁盘上方 臂，用于保持磁头位置的精细致动器，以及将致动器的位移反馈到粗动作器的目标值的反馈路径。 反馈控制器控制双致动器系统的去耦，其将粗执行器和精细致动器相加。

公开(公告)号：US07336444B2

公开(公告)日：2008-02-26

申请号：US11137472

申请日：2005-05-26

申请人： Takuma Kido ,  Tomoo Sukagawa ,  Keiji Aruga

发明人： Takuma Kido ,  Tomoo Sukagawa ,  Keiji Aruga

IPC分类号： G11B5/48

CPC分类号： G11B5/4833 ,  G11B5/4826 ,  G11B33/08

摘要： Vibrations in a magnetic head assembly equipped with a magnetic head, caused by the effects of the flow of air arising from the high-speed rotation of a magnetic disk, can be suppressed by affixing a damping material to the magnetic head assembly. As a result, accurate positioning is possible with high reliability, the frequency of occurrence of errors during data recording and playback can be suppressed, high data transfer rates can be maintained, and high recording densities for a magnetic disk device can be realized.

摘要翻译： 通过将阻尼材料固定在磁头组件上，可以抑制由磁盘的高速旋转引起的空气流动的影响而配备有磁头的磁头组件中的振动。 结果，可靠地进行精确的定位，可以抑制在数据记录和重放期间发生错误的频率，可以保持高的数据传输速率，并且可以实现磁盘装置的高记录密度。

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：US6128153A

公开(公告)日：2000-10-03

申请号：US805161

申请日：1997-02-24

申请人： Susumu Hasegawa ,  Yukihiro Uematsu ,  Tomoyoshi Yamada ,  Takahisa Ueno ,  Nobuyuki Suzuki ,  Keiji Aruga ,  Shuichi Hashimoto

发明人： Susumu Hasegawa ,  Yukihiro Uematsu ,  Tomoyoshi Yamada ,  Takahisa Ueno ,  Nobuyuki Suzuki ,  Keiji Aruga ,  Shuichi Hashimoto

IPC分类号： G11B21/10 ,  G11B5/596

CPC分类号： G11B5/59627

摘要： Head position control is implemented in a disk drive for the case in which a disk is assembled into the disk drive after a precise track is recorded onto it using an external apparatus, which is capable of high-speed access even if there is eccentricity between a track defined by servo information and the center of rotation of the track. Two phase servo bursts consisting of servo information are recorded onto each of the servo information regions of a disk surface, in mutual alternation, the strength ratio between signals detected from these two phase servo bursts being used to determine to which side the head is displaced. By performing control so that this strength ratio is a prescribed value at each angular position, control is achieved so that the head moves along a circular path of rotation, even if there is eccentricity in the servo circular path defined by the recorded servo information with respect to the center of rotation.

摘要翻译： 在磁盘驱动器中实现磁头位置控制，其中在使用外部设备将精确磁道记录在其上之后将磁盘组装到磁盘驱动器中的情况下，其能够高速访问，即使在 由伺服信息定义的轨道和轨道的旋转中心。 由伺服信息组成的两相伺服脉冲串相互交替地记录在盘表面的每个伺服信息区域上，从这两个相位伺服脉冲串检测的信号之间的强度比用于确定磁头移位到哪一侧。 通过进行各个角度位置的强度比为规定值的控制，即使在由所记录的伺服信息确定的伺服圆形路径中存在偏心，也能够沿着圆形的旋转路径进行控制 到旋转中心。

公开(公告)号：US6101453A

公开(公告)日：2000-08-08

申请号：US44609

申请日：1998-03-19

申请人： Masaya Suwa ,  Keiji Aruga

发明人： Masaya Suwa ,  Keiji Aruga

IPC分类号： G01H1/14 ,  G01H17/00 ,  G01M99/00 ,  G11B33/12 ,  G01M19/00

CPC分类号： G01M99/004 ,  G01H1/14

摘要： A method and an apparatus for analyzing the vibration of the housing of a disk device are disclosed, in which the residual vibration of the housing can be accurately detected for protection against vibrations by determining the transfer function of the rotational acceleration of the housing. The vibration of the housing of the disk device attributable to a head actuator built into a computer or constituting a disk device housed in a locker is detected in such a manner that a random seek current is supplied to the head actuator from an external source, the transfer function of the rotational acceleration of the housing obtained from at least n acceleration sensor mounted on the housing is determined for each frequency, the spectrum of the random seek current supplied to the head actuator is multiplied by the transfer function of the housing, the resulting product is integrated twice thereby to convert the rotational acceleration into a displacement, the converted value of displacement thus obtained is multiplied by the servo follow-up error characteristic of the head actuator thereby to determine the power spectrum of the residual vibration in the frequency domain. The power spectrum is subjected to an inverse Fourier transformation thereby to detect the oscillation of the head with respect to time.

摘要翻译： 公开了一种用于分析盘装置的壳体的振动的方法和装置，其中通过确定壳体的旋转加速度的传递函数，能够精确地检测壳体的残余振动以防止振动。 以由内置于计算机内的头部致动器构成容纳在储物柜中的构成盘装置的盘装置的壳体的振动被检测为使得随机寻道电流从外部源提供给头致动器， 对于每个频率确定从安装在壳体上的至少n个加速度传感器获得的壳体的旋转加速度的传递函数，提供给头致动器的随机寻道电流的频谱乘以壳体的传递函数， 积分两次，从而将旋转加速度转换为位移，由此获得的位移转换值乘以头致动器的伺服跟随误差特性，从而确定频域中的残余振动的功率谱。 对功率谱进行傅立叶逆变换，从而检测头相对于时间的振荡。

公开(公告)号：US6025973A

公开(公告)日：2000-02-15

申请号：US213759

申请日：1998-12-17

申请人： Yoshifumi Mizoshita ,  Tomoyoshi Yamada ,  Yasumasa Kuroba ,  Toru Kouhei ,  Takao Sugawara ,  Masaru Matsumoto ,  Hiroyuki Mase ,  Masao Tsunekewa ,  Shinji Koganezawa ,  Keiji Aruga

发明人： Yoshifumi Mizoshita ,  Tomoyoshi Yamada ,  Yasumasa Kuroba ,  Toru Kouhei ,  Takao Sugawara ,  Masaru Matsumoto ,  Hiroyuki Mase ,  Masao Tsunekewa ,  Shinji Koganezawa ,  Keiji Aruga

IPC分类号： G11B5/54 ,  G11B17/028 ,  G11B19/20 ,  G11B21/12 ,  G11B21/22 ,  G11B25/04 ,  G11B33/08 ,  G11B33/12 ,  H02K7/04 ,  H02K7/08 ,  H02K21/24 ,  H02K33/18 ,  H02K41/035 ,  G11B17/02 ,  G11B23/00

CPC分类号： G11B33/121 ,  G11B17/028 ,  G11B17/0282 ,  G11B17/0287 ,  G11B19/20 ,  G11B19/2009 ,  G11B21/12 ,  G11B21/22 ,  G11B25/043 ,  G11B33/08 ,  G11B33/122 ,  G11B5/54 ,  H02K21/24 ,  H02K33/18 ,  H02K41/0358 ,  H02K7/04 ,  H02K7/086

摘要： A compact card type disk drive includes a housing (21) for accommodating a disk for storing data, a disk drive for rotating the disk, a head assembly for writing and reading data to and from the disk and an electronic circuit including at least an interface circuit (39), the latter three being accommodated in the housing. A connector (42) connected to the electronic circuit is fixed to the outside portion of the housing (21). The electronic circuit preferably contains a read/write circuit (36) and a control circuit (38). The housing (21) preferably includes a lower base (22) and an upper cover (23), and a printed circuit board (14) is disposed along the inner wall of either one, or both, of the base (22) and the cover (23). The outer dimension of the plane of the disk drive is preferably about 85.6 mm.times.54 mm, and typically, the outer thickness is 5 mm. Preferably, one connector (42) is disposed on either one of the minor sides of the housing (21). The connector (42) is disposed at the substantial center of the housing in the direction of its thickness and is fixed to one of the minor sides of the housing (21) which opposes the head assembly with respect to the disk.

摘要翻译： 一种紧凑型卡式磁盘驱动器包括用于容纳用于存储数据的磁盘的壳体（21），用于旋转磁盘的磁盘驱动器，用于向磁盘写入和读取数据的磁头组件以及至少包括接口 电路（39），后者三个被容纳在壳体中。 连接到电子电路的连接器（42）固定到壳体（21）的外部。 电子电路优选地包含读/写电路（36）和控制电路（38）。 壳体（21）优选地包括下基部（22）和上盖（23），并且印刷电路板（14）沿着基座（22）的一个或两个的内壁设置，并且 盖（23）。 磁盘驱动器的平面的外部尺寸优选为约85.6mm×54mm，并且通常外部厚度为5mm。 优选地，一个连接器（42）设置在壳体（21）的任一个次侧上。 连接器（42）沿其厚度方向设置在壳体的大致中心处并且被固定到相对于盘相对于头组件的壳体（21）的一个小侧。

公开(公告)号：US6016237A

公开(公告)日：2000-01-18

申请号：US139765

申请日：1998-08-25

申请人： Yoshifumi Mizoshita ,  Tomoyoshi Yamada ,  Yasumasa Kuroba ,  Toru Kouhei ,  Takao Sugawara ,  Masaru Matsumoto ,  Hiroyuki Mase ,  Masao Tsunekewa ,  Shinji Koganezawa ,  Keiji Aruga

发明人： Yoshifumi Mizoshita ,  Tomoyoshi Yamada ,  Yasumasa Kuroba ,  Toru Kouhei ,  Takao Sugawara ,  Masaru Matsumoto ,  Hiroyuki Mase ,  Masao Tsunekewa ,  Shinji Koganezawa ,  Keiji Aruga

IPC分类号： G11B5/54 ,  G11B17/028 ,  G11B19/20 ,  G11B21/12 ,  G11B21/22 ,  G11B25/04 ,  G11B33/08 ,  G11B33/12 ,  H02K7/04 ,  H02K7/08 ,  H02K21/24 ,  H02K33/18 ,  H02K41/035 ,  G11B33/02

CPC分类号： G11B33/121 ,  G11B17/028 ,  G11B17/0282 ,  G11B17/0287 ,  G11B19/20 ,  G11B19/2009 ,  G11B21/12 ,  G11B21/22 ,  G11B25/043 ,  G11B33/08 ,  G11B33/122 ,  G11B5/54 ,  H02K21/24 ,  H02K33/18 ,  H02K41/0358 ,  H02K7/04 ,  H02K7/086

摘要： A compact card type disk a drive includes a housing (21) for accommodating a disk for storing data, a disk drive for rotating the disk, head assembly for writing and reading data to and from the disk and an electronic circuit including at least an interface circuit (39), the latter three being accommodated in the housing. A connector (42) connected to the electronic circuit is fixed to the outside portion of the housing (21). The electronic circuit preferably contains a read/write circuit (36) and a control circuit (38). The housing (21) preferably includes a lower base (22) and an upper cover (23), and a printed circuit board (14) is disposed along the inner wall of either one, or both, of the base (22) and the cover (23). The outer dimension of the plane of the disk drive is preferably about 85.6 mm.times.54 mm, and typically, the outer thickness is 5 mm. Preferably, one connector (42) is disposed on either one of the minor sides of the housing (21). The connector (42) is disposed at the substantial center of the housing in the direction of its thickness and is fixed to one of the minor sides of the housing (21) which opposes the head assembly with respect to the disk.

摘要翻译： 一种紧凑型卡式盘，驱动器包括用于容纳用于存储数据的盘的壳体（21），用于旋转盘的盘驱动器，用于向和从盘读取数据的头组件和至少包括界面的电子电路 电路（39），后者三个被容纳在外壳中。 连接到电子电路的连接器（42）固定到壳体（21）的外部。 电子电路优选地包含读/写电路（36）和控制电路（38）。 壳体（21）优选地包括下基部（22）和上盖（23），并且印刷电路板（14）沿着基座（22）的一个或两个的内壁设置，并且 盖（23）。 磁盘驱动器的平面的外部尺寸优选为约85.6mm×54mm，并且通常外部厚度为5mm。 优选地，一个连接器（42）设置在壳体（21）的任一个次侧上。 连接器（42）沿其厚度方向设置在壳体的大致中心处并且被固定到相对于盘相对于头组件的壳体（21）的一个小侧。

公开(公告)号：US5764441A

公开(公告)日：1998-06-09

申请号：US636802

申请日：1996-04-23

申请人： Keiji Aruga ,  Yasumasa Kuroba ,  Tomoyoshi Yamada

发明人： Keiji Aruga ,  Yasumasa Kuroba ,  Tomoyoshi Yamada

IPC分类号： G11B21/02 ,  B81B3/00 ,  G11B21/08 ,  G11B5/55

CPC分类号： G11B21/085

摘要： A rotary moving coil actuator in a disk drive selectively positions a read/write head with respect to disk medium. A carriage is pivotable about an axis and has a carriage arm for supporting the head. A pair of magnets, disposed in spaced relationship within a magnetic yoke structure, have spaced flat faces perpendicular to the axis and define a gap therebetween. A flat coil structure, comprising one or a pair of flat coils, is attached to the carriage and disposed at least in part within the gap between the opposing flat faces of the magnets so as to be movable along a stroke of movement relatively thereto. The flat coil structure in cooperation with the magnets, generates a driving force in a direction approximately parallel to a first line which is perpendicular to the axis and passes through the axis and toward the read/write head and thereby substantially perpendicular to the seek direction of the head.

摘要翻译： 盘驱动器中的旋转运动线圈致动器相对于盘介质选择性地定位读/写头。 滑架可绕轴线转动并且具有用于支撑头部的托架臂。 在磁轭结构内以间隔关系设置的一对磁体具有垂直于该轴线的间隔开的平坦表面，并且在它们之间形成间隙。 包括一个或一对扁平线圈的扁平线圈结构被附接到托架并且至少部分地设置在磁体的相对平坦表面之间的间隙内，以便能够相对于其移动。 与磁体协调的扁平线圈结构在大致平行于垂直于轴线的第一线的方向上产生驱动力，并且通过轴线并朝向读/写头，从而基本上垂直于读取方向 头部。

公开(公告)号：US5519270A

公开(公告)日：1996-05-21

申请号：US106723

申请日：1993-08-16

申请人： Tomoyoshi Yamada ,  Yoshifumi Mizoshita ,  Keiji Aruga

发明人： Tomoyoshi Yamada ,  Yoshifumi Mizoshita ,  Keiji Aruga

IPC分类号： G11B19/20 ,  G11B25/04 ,  H02K1/02 ,  H02K1/14 ,  H02K1/18 ,  H02K3/26 ,  H02K3/52 ,  H02K5/124 ,  H02K15/02 ,  H02K21/12 ,  H02K21/14 ,  H02K21/22 ,  H02K7/14 ,  G11B17/08 ,  H02K1/12

CPC分类号： H02K3/522 ,  G11B19/2009 ,  G11B25/043 ,  H02K1/146 ,  H02K1/148 ,  H02K15/022 ,  H02K21/12 ,  H02K3/26 ,  H02K1/02 ,  H02K1/18 ,  H02K21/14 ,  H02K21/22 ,  H02K2201/12 ,  H02K2203/03 ,  H02K2203/12 ,  H02K5/124

摘要： A spindle motor includes a permanent magnet multipolarized in a circular direction of the permanent magnet. The permanent magnet generates magnetic fluxes in a radial direction of the spindle motor. A core assembly has core pieces, the core pieces respectively including first portions are circularly arranged and face the permanent magnet via a gap, and second portions guide magnetic fluxes in parallel with a rotation axis of the spindle motor. Windings are turned around the second portions of the core assembly and have axes of the windings extending in parallel with the rotation axis of the spindle motor. A yoke magnetically couples the core pieces with each other.

摘要翻译： 主轴电动机包括在永磁体的圆周方向上多极化的永磁体。 永久磁铁在主轴电动机的径向方向产生磁通。 芯组件具有芯片，分别包括第一部分的芯片部分被圆形布置并且经由间隙面对永磁体，并且第二部分引导与主轴电动机的旋转轴线平行的磁通量。 绕组绕着芯组件的第二部分转动，并且绕组的轴线与主轴电机的旋转轴线平行延伸。 磁轭将磁芯彼此磁耦合。

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。