公开(公告)号：US06583950B2

公开(公告)日：2003-06-24

申请号：US09986297

申请日：2001-11-08

申请人： Takeshi Yoshida ,  Hiroshi Nishida ,  Kenji Tomida ,  Shozo Saegusa

发明人： Takeshi Yoshida ,  Hiroshi Nishida ,  Kenji Tomida ,  Shozo Saegusa

IPC分类号： G11B3314

CPC分类号： G11B33/08 ,  G11B33/14

摘要： Shock-absorbing material made from a mixture of solid particles and viscous elastic material is arranged at the periphery of an information storage and retrieval device. When an external shock is applied to the device, the shock-absorbing material is greatly deformed and dissipates the shock energy by inner friction sufficiently to prevent damage to the inner mechanism of the device. The deformed shock-absorbing material can be restored to the original shape so that it is repeatedly usable. Furthermore, by comparing the deformed shape and the quick reference table provided with the device, the amount shock acceleration can be roughly determined. The device conforms to one of a series of dimensional standards for information storage and retrieval devices.

摘要翻译： 由固体颗粒和粘性弹性材料的混合物制成的缓震材料设置在信息存储和取回装置的周围。 当对设备施加外部冲击时，吸震材料大大变形，并通过内部摩擦充分消散冲击能量，以防止损坏设备的内部机构。 变形的减震材料可以恢复到原始形状，使其可重复使用。 此外，通过比较变形形状和设置有快速参考表，可以粗略地确定冲击加速度。 该设备符合信息存储和检索设备的一系列尺寸标准之一。

公开(公告)号：US06697218B2

公开(公告)日：2004-02-24

申请号：US10384567

申请日：2003-03-11

申请人： Takeshi Yoshida ,  Hiroshi Nishida ,  Kenji Tomida ,  Shozo Saegusa

发明人： Takeshi Yoshida ,  Hiroshi Nishida ,  Kenji Tomida ,  Shozo Saegusa

IPC分类号： G11B3314

CPC分类号： G11B33/08 ,  G11B33/14

摘要： Shock-absorbing material made from a mixture of solid particles and viscous elastic material is arranged at the periphery of an information storage and retrieval device. When an external shock is applied to the device, the shock-absorbing material is greatly deformed and dissipates the shock energy by inner friction sufficiently to prevent damage to the inner mechanism of the device. The deformed shock-absorbing material can be restored to the original shape so that it is repeatedly usable. Furthermore, by comparing the deformed shape and the quick reference table provided with the device, the amount shock acceleration can be roughly determined. The device conforms to one of a series of dimensional standards for information storage and retrieval devices.

摘要翻译： 由固体颗粒和粘性弹性材料的混合物制成的缓震材料设置在信息存储和取回装置的周围。 当对设备施加外部冲击时，吸震材料大大变形，并通过内部摩擦充分消散冲击能量，以防止损坏设备的内部机构。 变形的减震材料可以恢复到原始形状，使其可重复使用。 此外，通过比较变形形状和设置有快速参考表，可以粗略地确定冲击加速度。 该设备符合信息存储和检索设备的一系列尺寸标准之一。

公开(公告)号：US06243228B1

公开(公告)日：2001-06-05

申请号：US09028953

申请日：1998-02-24

申请人： Takeshi Yoshida ,  Hiroshi Nishida ,  Kenji Tomida ,  Shozo Saegusa

发明人： Takeshi Yoshida ,  Hiroshi Nishida ,  Kenji Tomida ,  Shozo Saegusa

IPC分类号： G11B3314

CPC分类号： G11B33/08 ,  G11B33/14

摘要： Shock-absorbing material made from a mixture of solid particles and viscous elastic material is arranged at the periphery of an information storage and retrieval device. When an external shock is applied to the device, the shock-absorbing material is greatly deformed and dissipates the shock energy by inner friction sufficiently to prevent damage to the inner mechanism of the device. The deformed shock-absorbing material can be restored to the original shape so that it is repeatedly usable. Furthermore, by comparing the deformed shape and the quick reference table provided with the device, the amount shock acceleration can be roughly determined. The device conforms to one of a series of dimensional standards for information storage and retrieval devices.

摘要翻译： 由固体颗粒和粘性弹性材料的混合物制成的缓震材料设置在信息存储和取回装置的周围。 当对设备施加外部冲击时，吸震材料大大变形，并通过内部摩擦充分消散冲击能量，以防止损坏设备的内部机构。 变形的减震材料可以恢复到原始形状，使其可重复使用。 此外，通过比较变形形状和设置有快速参考表，可以粗略地确定冲击加速度。 该设备符合信息存储和检索设备的一系列尺寸标准之一。

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：US06356408B1

公开(公告)日：2002-03-12

申请号：US09388439

申请日：1999-09-02

申请人： Katsutoshi Nii ,  Masaru Muranishi ,  Kenji Tomida ,  Kouki Uefune ,  Shozo Saegusa ,  Yuuichi Yanagase

发明人： Katsutoshi Nii ,  Masaru Muranishi ,  Kenji Tomida ,  Kouki Uefune ,  Shozo Saegusa ,  Yuuichi Yanagase

IPC分类号： G11B1702

CPC分类号： F16C33/107 ,  F16C17/045 ,  F16C33/1035 ,  F16C2370/12 ,  G11B19/2009 ,  G11B25/043 ,  G11B33/1446 ,  G11B33/148 ,  G11B33/1486 ,  H02K5/1675 ,  Y10T29/49025

摘要： In a magnetic disk apparatus, the spindle motor is provided with a hole that penetrates the hub in the axial direction thereof. The hole permits fluid pressure on the outside and inside of the hub to become balanced, reducing the axial fluid force caused by the rotation of the spindle motor. The apparatus further includes a bearing provided with a groove for dynamic pressure generation and a magnetic lubrication fluid which, in combination with a permanent magnet, prevents oil leakage and scattering.

摘要翻译： 在磁盘装置中，主轴电机设置有沿其轴向方向穿过轮毂的孔。 该孔允许轮毂的外部和内部的流体压力平衡，减少由主轴电动机的旋转引起的轴向流体力。 该装置还包括具有用于动态压力产生的凹槽的轴承和与永久磁铁组合防止漏油和散射的磁性润滑流体。

公开(公告)号：US06369988B1

公开(公告)日：2002-04-09

申请号：US09391405

申请日：1999-09-08

申请人： Takeshi Yoshida ,  Tetsuya Hamaguchi ,  Tomokazu Ishii ,  Shozo Saegusa ,  Shinsuke Higuchi

发明人： Takeshi Yoshida ,  Tetsuya Hamaguchi ,  Tomokazu Ishii ,  Shozo Saegusa ,  Shinsuke Higuchi

IPC分类号： G11B554

CPC分类号： G11B5/54

摘要： A magnetic disk drive provided with a loadunload mechanism of the rampload type is disclosed, in which even if loading and unloading operations are frequently repeated, damage to a head due to impingement during the unloading operation is eliminated, and a ramp and the lift-tab of a suspension are less liable to wear, and an operation failure or malfunction due to wear debris is eliminated, thereby providing the drive of high reliability. The ramp is supported for minute displacement, and the posture of the ramp is changed during the unloading operation. The restraining members for restraining the posture of the ramp are provided, and the cushioning members are provided at portions that the ramp and the restraining members come into contact with each other. There can be achieved a drive of high reliability in which even if the loading and unloading operations are frequently repeated, damage to the head due to impingement of the lift-tab during the unloading operation is eliminated, and the lift-tab and the ramp are less liable to wear, and an operation failure due to wear debris is eliminated.

摘要翻译： 公开了一种具有斜坡载荷类型的装载机构的磁盘驱动器，其中即使加载和卸载操作经常重复，消除了在卸载操作期间由于冲击而对头部的损坏，并且斜坡和升降片 的悬架不容易磨损，并且消除了由于磨损碎屑引起的操作故障或故障，从而提供高可靠性的驱动。 斜坡支撑用于微小位移，并且在卸载操作期间斜坡的姿态改变。 设置用于限制斜坡姿势的约束构件，并且缓冲构件设置在斜坡和限制构件彼此接触的部分处。 可以实现高可靠性的驱动器，其中即使重复加载和卸载操作，消除了在卸载操作期间由于升降片的撞击而对头部的损坏，并且升降片和斜面是 不容易磨损，并且消除了由于磨损碎屑引起的操作故障。

公开(公告)号：US06549377B2

公开(公告)日：2003-04-15

申请号：US10066675

申请日：2002-02-06

申请人： Takeshi Yoshida ,  Tetsuya Hamaguchi ,  Tomokazu Ishii ,  Shozo Saegusa ,  Shinsuke Higuchi

发明人： Takeshi Yoshida ,  Tetsuya Hamaguchi ,  Tomokazu Ishii ,  Shozo Saegusa ,  Shinsuke Higuchi

IPC分类号： G11B554

CPC分类号： G11B5/54

摘要： A magnetic disk drive having a disk for storing information, a spindle motor for rotating the disk, a head for recording information into the disk and reproducing information from said disk, a suspension supporting a slider provided with the head, a carriage supporting the suspension, a voice coil motor for exerting a rotational torque to the carriage so as to locate the head on the disk, a base and a cover, and a ramp serving as a guide for unloading the head from the disk. A part of the suspension slides over the ramp so as to effect the unloading operation and the position or the posture of the ramp is changed by sliding movement of the part of the suspension over and with respect to the ramp during the unloading operation.

摘要翻译： 具有用于存储信息的盘的磁盘驱动器，用于旋转盘的主轴电机，用于将信息记录到盘中并从所述盘再现信息的头，支撑设置有头的滑块的悬架，支撑悬架的滑架， 音圈马达，用于向托架施加旋转扭矩，以将头部定位在盘上，底座和盖子上，以及用作导轨的坡道，用于从盘上卸载头部。 悬架的一部分在斜坡上滑动以便实现卸载操作，并且斜坡的位置或姿势通过在卸载操作期间悬架的一部分相对于斜面的滑动运动而改变。

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。