公开(公告)号：US06657822B1

公开(公告)日：2003-12-02

申请号：US09579522

申请日：2000-05-26

申请人： Gentaro Nakamura ,  Nobuyuki Okunaga ,  Toshihisa Okazaki ,  Isao Kobayashi ,  Toshihiro Arisaka

发明人： Gentaro Nakamura ,  Nobuyuki Okunaga ,  Toshihisa Okazaki ,  Isao Kobayashi ,  Toshihiro Arisaka

IPC分类号： G11B560

CPC分类号： G11B5/60

摘要： A magnetic disk apparatus includes a magnetic disk, a magnetic head for writing data into and reading data from the magnetic disk, a carriage pivoted on a pivot bearing while holding the magnetic head at its one end, the pivot bearing being constituted by a cylindrical sleeve serving as a fixed axle, bearing units each having an outer race fitted to the inside of the sleeve, bearing balls, and an inner race, and a shaft having the outside fitted to the inner races of the bearing units, thus, change of a pre-load caused by a heat expansion difference between the shaft and sleeve is an axial direction is compensated with a change of a pre-load caused thereby the same is a radius direction. Hence, the weight of a pivotally movable portion of an actuator is reduced.

摘要翻译： 一种磁盘装置，包括磁盘，用于将数据写入磁盘的数据和从磁盘读取数据的磁头，在枢轴支承件上枢转的滑架，同时将磁头保持在其一端，该枢转轴承由圆柱形套筒 作为固定轴，每个轴承单元各自具有装配到套筒内侧的外圈，轴承滚珠和内圈，以及具有与轴承单元的内圈匹配的外侧的轴，因此， 由轴和套筒之间的热膨胀差引起的预负荷是由于由此引起的预负荷的变化来补偿轴向方向相同的半径方向。 因此，致动器的可枢转运动部分的重量减小。

公开(公告)号：US06353517B1

公开(公告)日：2002-03-05

申请号：US09422242

申请日：1999-10-21

申请人： Nobuyuki Okunaga ,  Toshihisa Okazaki

发明人： Nobuyuki Okunaga ,  Toshihisa Okazaki

IPC分类号： G11B1702

CPC分类号： G11B25/043 ,  G11B5/5521

摘要： In a magnetic disk drive having a magnetic circuit which provides a driving force to a carriage 7 holding a magnetic head so as to position the magnetic head, the magnetic circuit includes a driving coil 9 attached fixedly to the carriage and a magnet-yoke assembly 8. The magnet-yoke assembly 8 is supported in a housing at one point thereof so as to be able to rotate in the direction parallel to the surface of the magnetic disk. The assembly is rotatably supported by means of a bearing 14 and the bearing is provided with an initial displacement so as to increase the axial bearing rigidity thereof. A base 10 is provided with a slip guide 16 which allows the magnet-yoke assembly 8 to rotate with low friction and serves to provide the initial displacement to the bearing. A visco-elastic member 17 is provided for restricting the rotation of the assembly.

摘要翻译： 在具有磁路的磁盘驱动器中，该磁路向保持磁头的托架7提供驱动力以便定位磁头，磁路包括固定地安装在托架上的驱动线圈9和磁轭组件8 磁轭组件8在其一个位置被支撑在壳体中，以便能够在平行于磁盘表面的方向上旋转。 组件通过轴承14可旋转地支撑，并且轴承设置有初始位移，以增加其轴向刚度。 基座10设置有滑动引导件16，其允许磁轭组件8以低摩擦力旋转并用于向轴承提供初始位移。 提供粘弹性构件17用于限制组件的旋转。

公开(公告)号：US06445549B1

公开(公告)日：2002-09-03

申请号：US09983117

申请日：2001-10-23

申请人： Nobuyuki Okunaga ,  Toshihisa Okazaki

发明人： Nobuyuki Okunaga ,  Toshihisa Okazaki

IPC分类号： G11B555

CPC分类号： G11B25/043 ,  G11B5/5521

摘要： There is disclosed a support structure for a magnet-yoke assembly which prevents the magnet-yoke assembly, when vibrated on receipt of the driving reaction of a carriage, from causing a magnetic head and a magnetic disk to vibrate and which is independent of temperature. In a magnetic disk drive having a magnetic circuit which gives a driving force to a carriage 7 holding a magnetic head so as to position the magnetic head, the magnetic circuit comprises a driving coil 9 attached fixedly to the carriage and a magnet-yoke assembly 8, and the magnet-yoke assembly 8 is supported in a housing at one point thereof so as to be able to rotate in the direction parallel to the surface of the magnetic disk. The assembly is rotatably supported by means of a bearing 14 and the bearing is given with an initial displacement so as to increase the axial bearing rigidity thereof. A base 10 is provided with a slip guide 16 which allows the magnet-yoke assembly 8 to rotate with low friction and serves to give the initial displacement to the bearing. A visco-elastic member 17 is provided for restricting the rotation of the assembly.

摘要翻译： 公开了一种用于磁轭组件的支撑结构，其防止在接收到滑架的驱动反作用时振动的磁轭组件使磁头和磁盘振动并且与温度无关。 在具有磁路的磁盘驱动器中，该磁路向保持磁头的托架7提供驱动力以便定位磁头，磁路包括固定地安装在托架上的驱动线圈9和磁轭组件8 并且磁轭组件8在其一个位置处被支撑在壳体中，以便能够在平行于磁盘表面的方向上旋转。 组件通过轴承14可旋转地支撑，并且轴承具有初始位移，以增加其轴向刚度。 基座10设置有滑动引导件16，其允许磁轭组件8以低摩擦力旋转并且用于给予轴承的初始位移。 提供粘弹性构件17用于限制组件的旋转。

公开(公告)号：US07336440B2

公开(公告)日：2008-02-26

申请号：US11387903

申请日：2006-03-24

申请人： Mikio Tokuyama ,  Hayato Shimizu ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

发明人： Mikio Tokuyama ,  Hayato Shimizu ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

IPC分类号： G11B33/14

CPC分类号： G11B33/148 ,  G11B25/043 ,  G11B33/08

摘要： A magnetic disc unit includes a rotating disc type magnetic disc having an outer periphery, and a carriage arm linked to a head support mechanism for a recording/reproducing head. A base has an outer periphery and mounts the rotating disc type magnetic disc and the carriage arm, and has a side wall with an inner wall surface having an opening for inserting the carriage arm. The inner wall surface of the side wall defines a shroud surrounding the outer periphery of the magnetic disc, except at the opening in the side wall where the shroud is projected inwardly so as to decrease an opening angle of the opening in the side wall. A gap between the outer periphery of the magnetic disc and the shroud is set in a range not less than 0.1 mm but not greater than 0.6 mm.

摘要翻译： 磁盘单元包括具有外周的旋转盘型磁盘和连接到用于记录/再现头的磁头支撑机构的滑架臂。 基座具有外周边并且安装旋转盘型磁盘和托架臂，并且具有侧壁，内壁表面具有用于插入托架臂的开口。 侧壁的内壁表面限定围绕磁盘的外周的护罩，除了侧壁中的开口处，护罩向内突出，以减小侧壁中开口的开口角度。 磁盘的外周与护罩之间的间隙设定在0.1mm以上且0.6mm以下的范围内。

公开(公告)号：US07161754B2

公开(公告)日：2007-01-09

申请号：US10832819

申请日：2004-04-26

申请人： Shigeyuki Hanazawa ,  Toshihisa Okazaki ,  Tsutomu Naitou ,  Atsushi Hiruta

发明人： Shigeyuki Hanazawa ,  Toshihisa Okazaki ,  Tsutomu Naitou ,  Atsushi Hiruta

IPC分类号： G11B5/09

CPC分类号： G11B5/59633

摘要： A servo pattern writing method of writing a servo pattern for the positioning control of a magnetic head on a magnetic disk comprises changing the rotating speed of the magnetic disk with the magnetic head positioned at one or more proper radial positions with respect to the magnetic disk. The rotating speed of the magnetic disk is changed on the basis of the magnitude of a synchronous vibration synchronous with the rotation of the magnetic disk. Writing current for writing a servo pattern is set according to the change of the rotating speed of the magnetic disk. The STW rotating speed is changed according to the change of the radial position of the magnetic head to reduce the intensity of the vibration that is generated during a servo pattern writing operation to a value meeting a positioning level. The servo track writing operation can be achieved at a low cost.

摘要翻译： 将用于磁头的定位控制的伺服模式写入磁盘的伺服模式写入方法包括：使用位于相对于磁盘的一个或多个适当径向位置的磁头来改变磁盘的旋转速度。 基于与磁盘旋转同步的同步振动的大小来改变磁盘的转速。 根据磁盘转速的变化设定写入伺服模式的写入电流。 STW转速根据磁头的径向位置的变化而变化，将伺服模式写入动作时产生的振动强度降低到满足定位水平的值。 可以以低成本实现伺服磁道写入操作。

公开(公告)号：US06665139B2

公开(公告)日：2003-12-16

申请号：US10022260

申请日：2001-12-20

申请人： Mikio Tokuyama ,  Hayato Shimizu ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari

发明人： Mikio Tokuyama ,  Hayato Shimizu ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari

IPC分类号： G11B3314

CPC分类号： G11B33/08 ,  G11B5/6005 ,  G11B25/043 ,  G11B33/1446

摘要： In a magnetic disc apparatus including a plurality of magnetic discs mounted on a spindle, arms supporting magnetic heads, a rotary actuator for the arms, and a housing having an arcuate-shaped shroud, the improvement wherein gaps between the shroud and the sides of outer peripheries of the magnetic discs are larger than 0.1 mm and less than 0.6 mm. An open space is located, downstream of the arms with respect to the air flow on surfaces of the magnetic discs, the open space being devoid of the shroud. An opening is provided in the shroud, upstream of the arms with respect to the air flow and having a greater width than a width of the gaps defined between the magnetic discs and the shroud, and a bypass channel is provided which communicates between the opening and open space.

摘要翻译： 在包括安装在主轴上的多个磁盘，支撑磁头的臂，用于臂的旋转致动器和具有弧形罩的壳体的磁盘装置中，改进之处在于罩与外侧之间的间隙 磁盘的周边大于0.1mm且小于0.6mm。 相对于磁盘表面上的气流，位于臂的下游的开放空间，开放空间没有护罩。 在护罩中，相对于空气流在臂的上游设置开口，并且具有比限定在磁盘和护罩之间的间隙的宽度更大的宽度，并且提供旁通通道，其在开口和 开放空间。

公开(公告)号：US07330334B2

公开(公告)日：2008-02-12

申请号：US11129335

申请日：2005-05-16

申请人： Hayato Shimizu ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari ,  Mikio Tokuyama ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

发明人： Hayato Shimizu ,  Masao Iwakura ,  Shigeo Nakamura ,  Kazuo Sakai ,  Shigenori Togashi ,  Masayuki Kaiho ,  Toshiaki Kobari ,  Mikio Tokuyama ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

IPC分类号： G11B33/14

CPC分类号： G11B25/043 ,  G11B5/6005 ,  G11B33/142 ,  G11B33/1446 ,  G11B33/148

摘要： A magnetic disk apparatus includes a plurality of magnetic disks driven to rotate by a spindle motor, arms supporting magnetic heads on the magnetic disks, an actuator for moving the arms on the magnetic disks by a voice coil motor, and a housing which surrounds the magnetic disks, the arms and the actuator. A shroud which arcuately surrounds the magnetic disks along the outer periphery thereof has an opened portion for inserting the arms is formed in a part of the housing. The shroud on an upstream side of the arms relative to airflow generated by the magnetic disks when rotating is provided with an opening having a greater width than that of a gap defined between the shroud and the outer periphery of the magnetic disks. An empty bypass channel is provided which communicates from the opening through a rear side of the voice coil motor to the downstream side of the arms.

摘要翻译： 一种磁盘装置，包括由主轴电动机驱动旋转的多个磁盘，支撑在磁盘上的磁头的臂，用于通过音圈电机将臂支撑在磁盘上的致动器，以及围绕磁性的壳体 磁盘，臂和致动器。 沿其外周弧形围绕磁盘的护罩具有用于插入臂的开口部分形成在壳体的一部分中。 臂相对于旋转时由磁盘产生的气流在臂的上游侧的护罩设置有具有比限定在护罩与磁盘外周之间的间隙大的宽度的开口。 提供了一个空的旁路通道，其从开口通过音圈马达的后侧连通到臂的下游侧。

公开(公告)号：US5677813A

公开(公告)日：1997-10-14

申请号：US764190

申请日：1996-12-13

申请人： Takeshi Yoshida ,  Kenji Mori ,  Toshihisa Okazaki

发明人： Takeshi Yoshida ,  Kenji Mori ,  Toshihisa Okazaki

IPC分类号： G11B33/08 ,  G11B33/14 ,  G11B5/55

CPC分类号： G11B33/08

摘要： An object of the present invention is to restrain the rigid body rotational vibration of a magnetic disc apparatus caused by the driving reaction force of a head in order to position the head quickly and precisely and to reduce the sizes of the magnetic disc apparatus. According to this invention, a dynamic damper having a natural frequency equal to the rigid body rotational frequency of the magnetic disc apparatus is provided in at least one of the four corners inside or outside a housing of the magnetic disc apparatus. The dynamic damper comprises a weight member and bar-like members acting like springs, and has an angled shape so as to meet the form factor standard sizes for magnetic disc apparatuses.

摘要翻译： 本发明的目的是为了限制由磁头的驱动反作用力引起的磁盘装置的刚体旋转振动，以便快速准确地定位磁头并减小磁盘装置的尺寸。 根据本发明，在磁盘装置的外壳的内部或外部的四个角中的至少一个中设置有具有等于磁盘装置的刚体旋转频率的固有频率的动态阻尼器。 动力阻尼器包括配重构件和像弹簧一样的棒状构件，并且具有成角度的形状，以便满足磁盘装置的形状因子标准尺寸。

公开(公告)号：US07643245B2

公开(公告)日：2010-01-05

申请号：US11962340

申请日：2007-12-21

申请人： Mikio Tokuyama ,  Hayato Shimizu ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

发明人： Mikio Tokuyama ,  Hayato Shimizu ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

IPC分类号： G11B33/14

CPC分类号： G11B33/148 ,  G11B25/043 ,  G11B33/08

摘要： A magnetic disc unit includes a rotating disc type magnetic disc, a head for recording and reproducing data to and from the magnetic disc, and a head support mechanism for supporting the head. The magnetic disc unit includes a shroud surrounding an outer periphery of the magnetic disc other than at least at an inserting part of a carriage arm which is linked to the magnetic head support mechanism. A gap between an end face of the outer periphery of the magnetic disc and the shroud is set in a range not less than 0.1 mm but not greater than 0.4 mm.

摘要翻译： 磁盘单元包括旋转盘型磁盘，用于从磁盘记录和再现数据的磁头，以及用于支撑磁头的磁头支撑机构。 磁盘单元包括除了至少在与磁头支撑机构连接的滑架臂的插入部分之外围绕磁盘外周的护罩。 磁盘外周端面与护罩之间的间隙设定在0.1mm以上0.4mm以下的范围内。

公开(公告)号：US20060164754A1

公开(公告)日：2006-07-27

申请号：US11387903

申请日：2006-03-24

申请人： Mikio Tokuyama ,  Hayato Shimizu ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

发明人： Mikio Tokuyama ,  Hayato Shimizu ,  Satomitsu Imai ,  Shozo Saegusa ,  Masahiko Sega ,  Toshihisa Okazaki ,  Yuzo Yamaguchi

IPC分类号： G11B33/14

CPC分类号： G11B33/148 ,  G11B25/043 ,  G11B33/08

摘要： A magnetic disc unit includes a rotating disc type magnetic disc having an outer periphery, and a carriage arm linked to a head support mechanism for a recording/reproducing head. A base has an outer periphery and mounts the rotating disc type magnetic disc and the carriage arm, and has a side wall with an inner wall surface having an opening for inserting the carriage arm. The inner wall surface of the side wall defines a shroud surrounding the outer periphery of the magnetic disc, except at the opening in the side wall where the shroud is projected inwardly so as to decrease an opening angle of the opening in the side wall. A gap between the outer periphery of the magnetic disc and the shroud is set in a range not less than 0.1 mm but not greater than 0.6 mm.

摘要翻译： 磁盘单元包括具有外周的旋转盘型磁盘和连接到用于记录/再现头的磁头支撑机构的滑架臂。 基座具有外周边并且安装旋转盘型磁盘和托架臂，并且具有侧壁，内壁表面具有用于插入托架臂的开口。 侧壁的内壁表面限定围绕磁盘的外周的护罩，除了侧壁中的开口处，护罩向内突出，以减小侧壁中开口的开口角度。 磁盘的外周与护罩之间的间隙设定在0.1mm以上且0.6mm以下的范围内。