公开(公告)号：US06552456B2

公开(公告)日：2003-04-22

申请号：US09996830

申请日：2001-11-29

申请人： Hiromitsu Goto ,  Shinji Kinoshita ,  Toru Kumagai ,  Yukihiro Nakayama ,  Chihiro Tazawa ,  Mitsuharu Iwamoto ,  Ryoji Yoneyama

发明人： Hiromitsu Goto ,  Shinji Kinoshita ,  Toru Kumagai ,  Yukihiro Nakayama ,  Chihiro Tazawa ,  Mitsuharu Iwamoto ,  Ryoji Yoneyama

IPC分类号： H02K708

CPC分类号： F16C33/107 ,  F16C17/107 ,  F16C2370/12 ,  G11B19/2009 ,  H02K5/1675

摘要： A hydraulic dynamic pressure bearing motor has a rotational shaft mounted to undergo rotation about a rotational axis and having a shaft section and a flange section. A sleeve has a cavity for receiving the rotational shaft. A cover member is disposed over an open end of the sleeve cavity. A hydraulic dynamic pressure bearing includes minute radial and thrust clearances disposed between outer surface portions of the shaft and flange sections of the rotational shaft and inner surface portions of the sleeve and the cover member. A lubricating fluid is disposed in the minute radial and thrust clearances. The minute radial and thrust clearances are dimensioned so that during a non-rotational state of the rotational shaft, the flange section of the rotational shaft contacts preselected inner surface portions of the sleeve and the cover member while the shaft section of the rotational shaft does not contact any portion of the sleeve and an inner peripheral surface of the cover member.

摘要翻译： 液压动压轴承马达具有安装成绕旋转轴线旋转并具有轴部和凸缘部的旋转轴。 套筒具有用于接收旋转轴的空腔。 盖构件设置在套筒空腔的开口端上。 液压动压轴承包括设置在轴的外表面部分和旋转轴的凸缘部分以及套筒和盖部件的内表面部分之间的微小的径向和推力间隙。 润滑流体以微小的径向和推力间隙设置。 微小的径向和推力间隙的尺寸使得在旋转轴的非旋转状态期间，旋转轴的凸缘部分接触套筒和盖构件的预选的内表面部分，而旋转轴的轴部分不 接触套筒的任何部分和盖构件的内周表面。

公开(公告)号：US6023839A

公开(公告)日：2000-02-15

申请号：US883703

申请日：1997-06-27

申请人： Shinji Kinoshita ,  Shinji Ohta ,  Mitsuru Ide

发明人： Shinji Kinoshita ,  Shinji Ohta ,  Mitsuru Ide

IPC分类号： H02K1/27 ,  G11B17/028 ,  G11B19/20 ,  G11B25/04 ,  H02K15/03 ,  H02K15/02 ,  G11B17/04 ,  H02K1/22 ,  H02K7/00

CPC分类号： G11B17/0282 ,  G11B19/2009 ,  G11B25/043 ,  H02K15/03 ,  H02K1/2786 ,  Y10T29/49012

摘要： A motor rotor 10 is formed as follows: First, in a first forging step, a hum manufacturing primary block 6A is formed. Next, a second forging step B is effected to form the primary blank 6A into a secondary blank 6B. In this step, a forging die is used to secure an annular yoke 34 to the inner cylindrical surface 61a of a hub cylindrical portion 61 by punching, in such a manner that both whole edges of the annular yoke are sealingly closed thereby. In the second forging step B, by drawing the inner cylindrical surface 34a of the annular yoke, its circularity is improved. The annular yoke can be secured to the hub cylindrical portion with use of an adhesive agent. Moreover, the annular yoke can be fixed in such a manner that it is accurately coaxial with the hub cylindrical portion. In addition, the gap between the annular yoke and the hub cylindrical portion can be eliminated.

摘要翻译： 马达转子10如下形成：首先，在第一锻造工序中，形成嗡嗡声制造主块6A。 接下来，进行第二锻造步骤B以将主坯料6A形成为二次坯料6B。 在该步骤中，使用锻造模具，通过冲压将环形轭34固定在轮毂圆筒部61的内圆筒面61a上，使得环形轭的两个整个边缘被密封地封闭。 在第二锻造工序B中，通过拉伸环形轭的内圆筒面34a，其圆度提高。 环形轭可以使用粘合剂固定到轮毂圆柱形部分。 此外，环形轭可以以与轮毂圆筒部精确地同轴的方式固定。 此外，可以消除环形轭和轮毂圆柱形部分之间的间隙。

公开(公告)号：US5932941A

公开(公告)日：1999-08-03

申请号：US882806

申请日：1997-06-26

申请人： Shinji Kinoshita ,  Shinji Ota ,  Hiromitsu Gotoh

发明人： Shinji Kinoshita ,  Shinji Ota ,  Hiromitsu Gotoh

IPC分类号： H02K1/28 ,  H02K1/27 ,  H02K7/00 ,  H02K21/22

CPC分类号： H02K7/00

摘要： A spindle motor comprises a motor shaft, which is rotatably supported by a motor frame via a bearing and a hub, which is formed integral with the motor shaft for securing a data disk. The hub is made of a powder metallurgical product and is bonded with the motor shaft by sintering.

摘要翻译： 主轴电动机包括电动机轴，其经由轴承和轮毂由电动机框架可旋转地支撑，该电动机轴与电动机轴形成一体，用于固定数据盘。 轮毂由粉末冶金产品制成，并通过烧结与电机轴结合。

公开(公告)号：US5644084A

公开(公告)日：1997-07-01

申请号：US429547

申请日：1995-04-27

申请人： Shinji Kinoshita ,  Mitsuru Ide ,  Koichi Katakura

发明人： Shinji Kinoshita ,  Mitsuru Ide ,  Koichi Katakura

IPC分类号： G01H17/00 ,  G01H13/00 ,  H02K11/00 ,  H02K15/14

CPC分类号： G01H13/00

摘要： A current feed means is connected to an armature coil of a motor. Current is fed from the current feed means to the armature coil while the frequency of the current is gradually varied from a preset frequency to another preset frequency, thereby to vibrate the motor. The amplitudes of the frequencies are measured by a frequency analyzer means, which is brought into contact with the motor. The frequency at which the amplitude of the vibration of the motor is peaked indicates the natural frequency of the motor.

摘要翻译： 电流馈送装置连接到电动机的电枢线圈。 电流从电流馈送装置馈送到电枢线圈，同时电流的频率从预置频率逐渐变化到另一预置频率，从而使电动机振动。 频率的振幅由与电动机接触的频率分析装置测量。 电动机振动幅度达到峰值的频率表示电机的固有频率。

公开(公告)号：US5369537A

公开(公告)日：1994-11-29

申请号：US1276

申请日：1993-01-07

申请人： Shinji Kinoshita ,  Yoshitaka Murayama

发明人： Shinji Kinoshita ,  Yoshitaka Murayama

IPC分类号： G11B17/038 ,  G11B23/00 ,  G11B23/03 ,  G11B17/028

CPC分类号： G11B17/038

摘要： A disk driving device comprises a hub on which a data recording disk is mounted. The hub is rotated together with the disk. The hub has a disk mounting surface on which the disk is mounted. The disk mounting surface is inclined radially outwardly of the axis of rotation of the hub towards the side of the hub where the disk is mounted.

摘要翻译： 磁盘驱动装置包括其上安装有数据记录盘的集线器。 集线器与磁盘一起旋转。 轮毂具有安装盘的盘安装表面。 盘安装表面沿着毂的旋转轴线径向向外朝向安装盘的轮毂的侧面倾斜。

公开(公告)号：US08248726B2

公开(公告)日：2012-08-21

申请号：US11899664

申请日：2007-09-06

申请人： Keiji Nakazawa ,  Masaki Sansawa ,  Shinji Kinoshita

发明人： Keiji Nakazawa ,  Masaki Sansawa ,  Shinji Kinoshita

IPC分类号： G11B17/022

CPC分类号： G11B17/0287 ,  G11B17/038

摘要： A hard disk drive has an information recording medium that is rotationally driven for recording and/or reproducing information and a rotor hub that supports the information recording medium. The rotor hub has a flat mounting surface disposed in an outer circumferential portion thereof and on which the information recording medium is mounted so as to contact an edge portion of the mounting surface. The mounting surface is made of stainless steel containing a machineability improving additive, except for selenium and tellurium, for improving the machineability of the mounting surface. At least one of the edge portion or a portion of the mounting surface in the vicinity of the edge portion contains surface pores formed by component particles of the additive falling from the mounting surface. Each of the pores has a length less than 10 μm in a circumferential direction of the mounting surface.

摘要翻译： 硬盘驱动器具有用于记录和/或再现信息的旋转驱动的信息记录介质和支持信息记录介质的转子集线器。 转子毂具有设置在其外圆周部分中的平坦的安装表面，信息记录介质安装在该平面上以便与安装表面的边缘部分接触。 安装面由不锈钢制成，含有除了硒和碲以外的可加工性提高添加剂，用于提高安装面的加工性。 在边缘部分附近的边缘部分或安装表面的一部分中的至少一个包含由安装表面落下的添加剂的组分颗粒形成的表面孔。 每个孔在安装表面的圆周方向上具有小于10μm的长度。

公开(公告)号：US07796357B2

公开(公告)日：2010-09-14

申请号：US11628892

申请日：2005-05-31

申请人： Isamu Takehara ,  Shinji Kinoshita ,  Hiromitsu Gotoh

发明人： Isamu Takehara ,  Shinji Kinoshita ,  Hiromitsu Gotoh

IPC分类号： G11B33/12

CPC分类号： G11B19/2009 ,  G11B33/1493 ,  H02K21/16

摘要： An object is to provide an information recording and playback apparatus that is capable of reducing, as much as possible, reading and writing errors caused by magnetic leakage flux on the inner peripheral side of a magnetic disk. An information recording and playback apparatus 1 includes a rotor R rotatably holding a magnetic disk 60 and being provided with a permanent magnet 51 on the outer peripheral surface; a stator core 3 fixed to a base member 2, the stator core 3 protruding to the inner side in the radial direction in such a manner as to oppose the permanent magnet 51, the stator core 3 including a plurality of stator poles 3a around which coils 3b are wound; a shield plate 70 disposed between the magnetic disk 60 and the stator core 3 in such a manner as to cover the stator core 3 and to have a small gap 62 between the rotating body R, the shielding plate 70 blocking magnetic flux from the permanent magnet 51 and the stator core 3; and a magnetic head 61 for carrying out recording and playback of the magnetic disk 60 by moving forward and backward between the shield plate 70 and the magnetic disk 60. The magnetic head 61 moves forward and backward on the stator poles 3a.

摘要翻译： 本发明的目的是提供一种能够尽可能地减少磁盘内周侧的磁漏磁通引起的读写错误的信息记录再生装置。 信息记录和重放装置1包括可旋转地保持磁盘60的转子R并且在外周表面上设置有永磁体51; 固定在基体2上的定子铁芯3，定子芯3以与永久磁铁51相对的方式向径向内侧突出的定子铁心3，定子铁芯3具有多个定子极3a，线圈 3b缠绕; 以覆盖定子芯3的方式设置在磁盘60和定子芯3之间的屏蔽板70，并且在旋转体R之间具有小间隙62，屏蔽板70阻挡来自永磁体的磁通量 51和定子铁心3; 以及用于通过在屏蔽板70和磁盘60之间前后移动来执行磁盘60的记录和重放的磁头61.磁头61在定子极3a上前后移动。

公开(公告)号：US20080068744A1

公开(公告)日：2008-03-20

申请号：US11899664

申请日：2007-09-06

申请人： Keiji Nakazawa ,  Masaki Sansawa ,  Shinji Kinoshita

发明人： Keiji Nakazawa ,  Masaki Sansawa ,  Shinji Kinoshita

IPC分类号： G11B5/012

CPC分类号： G11B17/0287 ,  G11B17/038

摘要： Provided is a hard disk drive including a flat disk mounting surface including no recessed portion which causes minute deformation hindering accurate recording/reproducing. The hard disk drive includes: a magnetic disk (2), which is rotationally driven for recording and reproducing information; a rotor hub (12) including a disk mounting surface (15) on which the magnetic disk (2) is mounted in an outer circumferential portion thereof; and a clamp (30) for pressurizing and fixing the magnetic disk (2) to the mounting surface (15). In the vicinity of an edge portion of the disk mounting surface (15) to which the clamp (30) pressurizes, a pore having a length of 10 μm or more in a circumferential direction is not allowed to exist.

摘要翻译： 提供一种硬盘驱动器，其包括不包括妨碍精确记录/再现的微小变形的凹陷部分的平坦盘安装表面。 硬盘驱动器包括：磁盘（2），其被旋转地驱动以用于记录和再现信息; 转子毂（12），包括盘安装表面（15），所述磁盘（2）的外周部分安装在所述盘安装表面上; 以及用于将磁盘（2）加压并固定到安装表面（15）的夹具（30）。 在夹具（30）加压的盘安装面（15）的边缘部分附近，不允许存在圆周方向长度为10μm以上的孔。

公开(公告)号：US20070177832A1

公开(公告)日：2007-08-02

申请号：US10589422

申请日：2005-02-17

申请人： Hiromitsu Gotoh ,  Kazuaki Oguchi ,  Shinji Kinoshita ,  Chihiro Tazawa ,  Tomohiko Hayashi

发明人： Hiromitsu Gotoh ,  Kazuaki Oguchi ,  Shinji Kinoshita ,  Chihiro Tazawa ,  Tomohiko Hayashi

IPC分类号： F16C32/06

CPC分类号： F16C33/107 ,  F16C17/045 ,  F16C17/107 ,  F16C33/1085 ,  F16C2370/12 ,  G11B19/2009 ,  H02K7/085

摘要： The generation of bubbles can be suppressed by enabling a stable supply of working fluid to a dynamic pressure generating groove, and oscillation at the time of rotation and leakage of working fluid can be prevented effectively by efficiently releasing any bubbles generated. There is provided a fluid dynamic pressure bearing 1 provided with an annular dynamic pressure generating face 17 made by forming a dynamic pressure generating groove, which draws a working fluid 14 toward a midway position in the radial direction from the inside and outside of a thrust bearing plate 13 in the radial direction, when a shaft 10 and a housing 11 are rotated relative to each other about the axis, on thickness direction end faces 13a, 13b of the thrust bearing plate 13, or on an inner surface of the housing 11, and an inner groove section 16, which is located on an inner peripheral side thereof and that is depressed more than the dynamic pressure generating face 17 in the thickness direction, on the end faces 13a, 13b. Moreover there is provided a through hole 19 which passes through the thrust bearing plate 13 in the thickness direction so as to open to the dynamic pressure generating face 17, and there is provided a communicating cavity 20 which connects the opening portion of the through hole 19 and the inner groove section 16.

摘要翻译： 可以通过使动态压力产生槽稳定地供给工作流体来抑制气泡的产生，并且通过有效地释放产生的气泡，可以有效地防止工作流体的旋转和泄漏时的振动。 提供了一种流体动压轴承1，其设置有环形动压产生面17，该环形动压产生面17通过形成动压产生槽而形成，动压产生槽从推力轴承的内侧和外侧向径向的中间位置拉动工作流体14 板13在径向方向上，当轴10和壳体11绕轴线相对于推力轴承板13的厚度方向端面13a，13b延伸，或者在壳体的内表面上 11以及位于其内周侧并在厚度方向上比动压产生面17压下的内槽部16在端面13a，13b上。 而且，在厚度方向上设置有贯通推力轴承板13的通孔19，以通向动压产生面17，并且设置有连通孔20，连通孔20连通通孔19的开口部 和内槽部16。

公开(公告)号：US07191806B2

公开(公告)日：2007-03-20

申请号：US10525465

申请日：2004-03-11

申请人： Ryoji Yoneyama ,  Shinji Kinoshita ,  Toru Kumagai ,  Hiromitsu Gotoh ,  Atsushi Ohta

发明人： Ryoji Yoneyama ,  Shinji Kinoshita ,  Toru Kumagai ,  Hiromitsu Gotoh ,  Atsushi Ohta

IPC分类号： B65B31/04

CPC分类号： F16N37/003

摘要： The opening of an oil container 11 for storing oil 12 is sealed airtight with a cover member 32. A one-sided-bag-shaped fluid dynamic pressure bearing 10 is seated on an O-ring 25 and fixed airtight onto the upper surface of a bearing seating 30. Inanexhaust position with the distal end portion of an injection tube 36 positioned away from an oil level, the inside of the oil container 11 is evacuated by a vacuum pump 22 through a suction/exhaust passage including a suction/exhaust through-hole 17, thus turning the inside of the one-sided-bag-shaped fluid dynamic pressure bearing (10) into a vacuum. In this state, a control device drives a moving device to raise the oil container 11 to an injection position and releases the suction/exhaust passage to the atmosphere. This causes the oil 12 to be injected into the one-sided-bag-shaped fluid dynamic pressure bearing 10 through an oil injection passage including the injection tube 36.

摘要翻译： 用于储存油12的油容器11的开口用盖构件32密封地密封。 单面袋状流体​​动压轴承10位于O形环25上，并且气密地固定在轴承座30的上表面上。 在喷射管36远离油位的远端部分的排气位置，油容器11的内部通过包括吸入/排气通孔17的抽吸/排气通道由真空泵22抽真空，因此 将单面袋状流体​​动压轴承（10）的内部转动成真空。 在这种状态下，控制装置驱动移动装置将油容器11升高到喷射位置，并将吸入/排出通道释放到大气中。 这使得油12通过包括注射管36的注油通道注入到单面袋形流体动压轴承10中。