公开(公告)号：US07663280B2

公开(公告)日：2010-02-16

申请号：US11912948

申请日：2006-05-19

申请人： Kenichi Miyamori ,  Shigeo Obata ,  Hiromitsu Noda ,  Hiromi Kita

发明人： Kenichi Miyamori ,  Shigeo Obata ,  Hiromitsu Noda ,  Hiromi Kita

IPC分类号： H02K7/08 ,  H02K7/00

CPC分类号： G11B33/12 ,  G11B19/2009 ,  G11B33/123 ,  H02K7/085

摘要： A spindle motor and a disk drive device are provided that have a high operation efficiency of the motor, that does not leak oil, and that has an improved stability by decreasing a runout component in the direction of the rotation axis. The spindle motor includes a rotor hub (20) composed of a disk-like flange (201) and a cylinder-shaped shaft (203); a ring-shaped rotating magnet (16) fastened on one main surface of the flange (201); an armature (14) facing the rotating magnet (16); a sleeve (80) rotatably supporting the shaft (203); and a chassis (15) fixing the armature (14) and the sleeve (80). The flange (201) and the shaft (203) are integrally formed with magnetic material; a protrusion is not provided between a mounting surface (204) for mounting the rotating magnet (16) thereon and a counter-face surface (205) facing the end surface of the sleeve; and the mounting surface (204) and the counter-face surface (205) are orthogonal to the direction of the central axis (A-A′) of the shaft (203), and in a level plane; or the mounting surface (204) is recessed stepwise from the counter-face surface (205) toward the disk mounting portion (202).

摘要翻译： 提供一种主轴电动机和磁盘驱动装置，其具有电动机的高操作效率，不会泄漏油，并且通过减小旋转轴线方向上的跳动分量而具有改进的稳定性。 主轴电动机包括由盘状凸缘（201）和圆筒形轴（203）构成的转子轮毂（20）。 固定在凸缘（201）的一个主表面上的环形旋转磁体（16）; 面向所述旋转磁体的电枢（14）; 可旋转地支撑所述轴（203）的套筒（80）; 以及固定所述电枢（14）和所述套筒（80）的底座（15）。 凸缘（201）和轴（203）与磁性材料一体形成; 在其上安装旋转磁体（16）的安装表面（204）和面向套筒的端表面的相对表面（205）之间没有设置突起; 并且所述安装面（204）和所述反面面（205）与所述轴（203）的中心轴线（A-A'）的方向正交，并且在平面内; 或者安装面（204）从对置面（205）向盘安装部（202）逐步凹陷。

公开(公告)号：US20070189648A1

公开(公告)日：2007-08-16

申请号：US10587567

申请日：2005-10-31

申请人： Hiromi Kita ,  Shigeo Obata ,  Kenichi Miyamori ,  Hiromitsu Noda

发明人： Hiromi Kita ,  Shigeo Obata ,  Kenichi Miyamori ,  Hiromitsu Noda

IPC分类号： F16C32/06

CPC分类号： F16C17/045 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2018 ,  H02K5/1675

摘要： A thrust dynamic pressure bearing with high inclination-resistant rigidity against axis runout and additionally low bearing loss torque is implemented. Herringbone grooves (131) having intermediate bends (132) are provided on rotating-side bearing surface (11) provided on the rotating-side bearing member. When rotating-side bearing surface (11) rotates in direction A (clockwise), lubricating oil generates dynamic pressure in an area centering on intermediate bend (132) along radially outer part (133) and radially inner part (134) of herringbone groove (131). As a result that groove width (G) of a dynamic pressure generating groove and width (L) of a land adjacent to the dynamic pressure generating groove holds G>L at an arbitrary radius (2) position, a thrust dynamic pressure bearing with high inclination-resistant rigidity and additionally low bearing loss torque is provided.

摘要翻译： 实现了抗轴向跳动具有高抗倾斜刚性的推力动压轴承，另外还具有低轴承损耗扭矩。 具有中间弯曲部（132）的人字形槽（131）设置在设置在旋转侧轴承部件上的旋转侧支承面（11）上。 当旋转侧轴承表面11沿方向A旋转时，润滑油沿着人字槽的径向外部部分133和径向内部部分134以中间弯曲部132为中心的区域产生动压（ 131）。 结果，动压产生槽的槽宽（G）和与动压产生槽相邻的焊盘的宽度（L）在任意半径（2）位置处保持G> L，具有高的推力动压轴承 提供了耐倾斜刚度和另外低的轴承损失扭矩。

公开(公告)号：US20090072642A1

公开(公告)日：2009-03-19

申请号：US11912948

申请日：2006-05-19

申请人： Kenichi Miyamori ,  Shigeo Obata ,  Hiromitsu Noda ,  Hiromi Kita

发明人： Kenichi Miyamori ,  Shigeo Obata ,  Hiromitsu Noda ,  Hiromi Kita

IPC分类号： H02K5/16

CPC分类号： G11B33/12 ,  G11B19/2009 ,  G11B33/123 ,  H02K7/085

摘要： A spindle motor and a disk drive device are provided that has a high operation efficiency of the motor, that does not leak oil, and that has an improved stability by decreasing a runout component in the direction of the rotation axis. The spindle motor includes rotor hub (20) composed of disk-like flange (201) and cylinder-shaped shaft (203); ring-shaped rotating magnet (16) fastened on one main surface of flange (201); armature (14) facing rotating magnet (16); sleeve (80) rotatably supporting shaft (203); and chassis (15) fixing armature (14) and sleeve (80). Flange (201) and shaft (203) are integrally formed with magnetic material; a protrusion is not provided between mounting surface (204) for mounting rotating magnet (16) thereon and counter-face surface (205) facing the end surface of the sleeve; and additionally mounting surface (204) and counter-face surface (205) are orthogonal to the direction of the central axis (A-A′) of shaft (203), and in a level plane; or mounting surface (204) is recessed stepwise from counter-face surface (205) toward disk mounting portion (202).

摘要翻译： 提供了一种主轴电动机和磁盘驱动装置，其具有电动机的高操作效率，不会漏油，并且通过减小旋转轴线的方向上的跳动分量而具有改善的稳定性。 主轴电动机包括由盘状凸缘（201）和圆柱形轴（203）构成的转子轮毂（20）。 紧固在凸缘（201）的一个主表面上的环形旋转磁体（16）; 电枢（14）面对旋转磁体（16）; 套筒（80）可旋转地支撑轴（203）; 和固定电枢（14）和套筒（80）的底架（15）。 凸缘（201）和轴（203）与磁性材料一体形成; 在其上安装旋转磁体（16）的安装表面（204）和面向套筒的端表面的反面（205）之间不设置突起; 另外安装表面（204）和反面表面（205）与轴（203）的中心轴线（A-A'）的方向垂直，并且在平面中; 或安装面（204）从对置面（205）朝向盘安装部（202）逐步凹陷。

公开(公告)号：US07160031B2

公开(公告)日：2007-01-09

申请号：US10990486

申请日：2004-11-18

申请人： Hiromi Kita ,  Shigeo Obata ,  Kenichi Miyamori ,  Hiromitsu Noda

发明人： Hiromi Kita ,  Shigeo Obata ,  Kenichi Miyamori ,  Hiromitsu Noda

IPC分类号： F16C32/06

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

摘要： In order to prevent lubricating oil leakage due to bubbles in a thrust dynamic pressure bearing having herringbone grooves, and to stabilize the bearing performance, and enhance the reliability and durability, auxiliary grooves deeper than pump-in type herringbone grooves for generating dynamic pressure are provided. The bearing inner periphery and bearing outer periphery are linked by a pressure gradient descending slowly, and therefore bubbles present in the bearing inner periphery can be guided to the bearing outer periphery through the auxiliary grooves, and discharged outside of the bearing from the air-liquid interface, so that lubricating oil leakage due to bubbles can be prevented.

摘要翻译： 为了防止由于具有人字槽的推力动压轴承中的气泡导致的润滑油泄漏，并且为了稳定轴承性能，提高可靠性和耐久性，提供了比用于产生动压的泵入型人字槽更深的辅助槽 。 轴承内周和轴承外周通过缓慢下降的压力梯度连接，因此存在于轴承内周中的气泡可以通过辅助槽被引导到轴承外周，并从轴承的外部排出空气 - 液体 界面，从而可以防止由于气泡而导致的润滑油泄漏。

公开(公告)号：US07448805B2

公开(公告)日：2008-11-11

申请号：US10587567

申请日：2005-10-31

申请人： Hiromi Kita ,  Shigeo Obata ,  Kenichi Miyamori ,  Hiromitsu Noda

发明人： Hiromi Kita ,  Shigeo Obata ,  Kenichi Miyamori ,  Hiromitsu Noda

IPC分类号： F16C32/06

CPC分类号： F16C17/045 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2018 ,  H02K5/1675

摘要： A thrust dynamic pressure bearing with high inclination-resistant rigidity against axis runout and additionally low bearing loss torque is implemented. Herringbone grooves (131) having intermediate bends (132) are provided on rotating-side bearing surface (11) provided on the rotating-side bearing member. When rotating-side bearing surface (11) rotates in direction A (clockwise), lubricating oil generates dynamic pressure in an area centering on intermediate bend (132) along radially outer part (133) and radially inner part (134) of herringbone groove (131). As a result that groove width (G) of a dynamic pressure generating groove and width (L) of a land adjacent to the dynamic pressure generating groove holds G>L at an arbitrary radius (2) position, a thrust dynamic pressure bearing with high inclination-resistant rigidity and additionally low bearing loss torque is provided.

摘要翻译： 实现了抗轴向跳动具有高抗倾斜刚性的推力动压轴承，另外还具有低轴承损耗扭矩。 具有中间弯曲部（132）的人字形槽（131）设置在设置在旋转侧轴承部件上的旋转侧支承面（11）上。 当旋转侧轴承表面11沿方向A旋转时，润滑油沿着人字槽的径向外部部分133和径向内部部分134以中间弯曲部132为中心的区域产生动压（ 131）。 结果，动压产生槽的槽宽（G）和与动压产生槽相邻的焊盘的宽度（L）在任意半径（2）位置处保持G> L，具有高的推力动压轴承 提供了耐倾斜刚度和另外低的轴承损失扭矩。

公开(公告)号：US20050141789A1

公开(公告)日：2005-06-30

申请号：US10990486

申请日：2004-11-18

申请人： Hiromi Kita ,  Shigeo Obata ,  Kenichi Miyamori ,  Hiromitsu Noda

发明人： Hiromi Kita ,  Shigeo Obata ,  Kenichi Miyamori ,  Hiromitsu Noda

IPC分类号： F16C17/04 ,  F16C33/10 ,  G11B19/20 ,  F16C32/06

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

摘要： In order to prevent lubricating oil leak due to bubbles in thrust dynamic pressure bearing of herringbone grooves, stabilize the bearing performance, and enhance the reliability and durability, auxiliary grooves deeper than pump-in type herringbone grooves for generating dynamic pressure are provided, and the bearing inner periphery and bearing outer periphery are linked by a pressure gradient descending slowly, and therefore bubbles present in bearing inner periphery can be guided into the bearing outer periphery through auxiliary grooves, and discharged to outside of the bearing from the air-liquid interface, so that lubricating oil leak due to bubbles can be prevented.

摘要翻译： 为了防止由人造槽的推力动压轴承中的气泡导致的润滑油泄漏，稳定轴承性能，提高可靠性和耐久性，提供比用于产生动压的泵入型人字槽更深的辅助槽，并且 轴承内周和轴承外周通过缓慢下降的压力梯度连接，因此轴承内周中存在的气泡可以通过辅助槽被引导到轴承外周，并从空气 - 液体界面排出到轴承外部， 从而可以防止由于气泡而导致的润滑油泄漏。

公开(公告)号：US20090083772A1

公开(公告)日：2009-03-26

申请号：US11570000

申请日：2006-01-12

申请人： Kenichi Miyamori ,  Shigeo Obata ,  Hiromitsu Noda ,  Yoshiro Ueno

发明人： Kenichi Miyamori ,  Shigeo Obata ,  Hiromitsu Noda ,  Yoshiro Ueno

IPC分类号： G11B7/00

CPC分类号： G11B17/0287 ,  G11B17/038

摘要： There is provided a disk apparatus having a clamp structure, which can fix a disk in a stable manner with a simple construction. More specifically, the disk apparatus includes a hub having a disk inserting portion having a cylindrical plane in the outer part of one end and a disk receiving portion having a flat part and being pivotably supported, a head having an inner hole through which the disk inserting portion is fitted, facing toward one face of a disk, levitating and scanning above the disk and reading a signal recorded on the disk or recording a signal on the disk, the disk being held by the disk receiving portion, and a clamp unit holding the disk with the disk receiving portion. In this case, the disk receiving portion has an inclined or declined plane. Thus, the amount and direction of deformation of the disk, which is caused by clamping, are defined, and obtaining a stable amount of head levitation independently of temperature changes can prevent the occurrence of a distortion of the disk. Therefore, a decrease in head output, for example, can be prevented, and the reliability can be improved.

摘要翻译： 提供一种具有夹紧结构的盘装置，其能够以简单的结构以稳定的方式固定盘。 更具体地说，盘装置包括具有盘插入部分的轮毂，盘片插入部分在一端的外部具有圆柱形平面，盘片接收部分具有平坦部分并且可枢转地支撑，头部具有内孔，盘插入 安装面向盘的一个面的部分，悬浮并在盘上方扫描并读取记录在盘上的信号或在盘上记录信号，盘被盘接收部分保持，夹持单元保持 磁盘与磁盘接收部分。 在这种情况下，盘接收部分具有倾斜或倾斜的平面。 因此，限定由夹紧引起的盘的变形量和方向，并且独立于温度变化获得稳定的头部悬浮量可以防止盘的变形的发生。 因此，可以防止例如头部输出的减少，并且可以提高可靠性。

公开(公告)号：US20050086678A1

公开(公告)日：2005-04-21

申请号：US10965869

申请日：2004-10-18

申请人： Kenichi Miyamori ,  Shigeo Obata ,  Hiromitsu Noda

发明人： Kenichi Miyamori ,  Shigeo Obata ,  Hiromitsu Noda

IPC分类号： G11B17/028 ,  G11B17/03 ,  G11B17/038 ,  G11B19/20 ,  H02K1/27 ,  H02K21/22

CPC分类号： G11B17/038 ,  G11B17/028 ,  G11B19/2009

摘要： The disclosed is a spindle motor most suitable for magnetic disk drives, optical disk drives or the like capable of constraining undesirable cogging torques to a low level and of winding a coil regularly. In particular, the inward periphery of magnetic pole of iron core for a stator includes of an arc shaped surface concentrically to the outward periphery of rotor magnet and a pair of flat surfaces, generally perpendicular to the centerline of magnetic pole, attached to both sides of the arc shaped surface peripherally. The configuration can reduce the cogging torques without any decrease in motor efficiency.

摘要翻译： 所公开的是最适合于能够将不期望的齿槽转矩约束到低水平并且定期卷绕线圈的磁盘驱动器，光盘驱动器等的主轴电机。 特别地，用于定子的铁芯的磁极的内周包括与转子磁体的外周同心的圆弧形表面，以及一对平直表面，大致垂直于磁极的中心线，附接到转子磁体的两侧 弧形表面外围。 该结构可以减小齿槽转矩，而不会降低电机效率。

公开(公告)号：US07317271B2

公开(公告)日：2008-01-08

申请号：US11362180

申请日：2006-02-27

申请人： Shigeo Obata ,  Kaoru Matsuoka ,  Hideki Kuwajima ,  Kenichi Miyamori ,  Hiromitsu Noda

发明人： Shigeo Obata ,  Kaoru Matsuoka ,  Hideki Kuwajima ,  Kenichi Miyamori ,  Hiromitsu Noda

IPC分类号： H02K5/16

CPC分类号： F16C33/107 ,  F16C17/10 ,  F16C2370/12 ,  G11B19/2009 ,  H02K7/086

摘要： The stop ring having a surface nearly vertical to the rotational center axis, which is projected at the inner periphery of the hollow cylinder of the rotor section, and the stepped surface of the fixed shaft secured on the chassis are opposed to each other with a predetermined slight clearance provided therebetween. The clearance is filled with magnetic fluid, and further, a permanent magnet is disposed on the chassis, opposing to the other surface of the stop ring.

摘要翻译： 具有与旋转中心轴线几乎垂直的表面的止挡环突出在转子部分的中空圆筒的内周，并且固定在底盘上的固定轴的台阶表面以预定的方式彼此相对 在它们之间提供微小的间隙。 间隙填充有磁性流体，此外，永磁体设置在底盘上，与止动环的另一个表面相对。

公开(公告)号：US07787214B2

公开(公告)日：2010-08-31

申请号：US11570000

申请日：2006-01-12

申请人： Kenichi Miyamori ,  Shigeo Obata ,  Hiromitsu Noda ,  Yoshiro Ueno

发明人： Kenichi Miyamori ,  Shigeo Obata ,  Hiromitsu Noda ,  Yoshiro Ueno

IPC分类号： G11B17/038

CPC分类号： G11B17/0287 ,  G11B17/038

摘要： A disk apparatus includes a hub having a disk inserting portion having a cylindrical plane in the outer part of one end and a disk receiving portion having a flat part and being pivotably supported, a head having an inner hole through which the disk inserting portion is fitted, facing toward one face of a disk, levitating and scanning above the disk and reading a signal recorded on the disk or recording a signal on the disk, the disk being held by the disk receiving portion, and a clamp unit holding the disk with the disk receiving portion. In this case, the disk receiving portion has an inclined or declined plane. Thus, the amount and direction of deformation of the disk, which is caused by clamping, are defined, and obtaining a stable amount of head levitation independently of temperature changes can prevent the occurrence of a distortion of the disk.

摘要翻译： 磁盘装置包括具有盘插入部分的轮毂，盘片插入部分在一端的外部具有圆柱形平面，盘片接收部分具有平坦部分并被可枢转地支撑，头部具有内孔，盘插入部分穿过该内孔 面对盘的一个面，在盘上方悬浮并扫描并读取记录在盘上的信号或在盘上记录信号，盘由盘接收部分保持，以及夹持单元， 盘接收部分。 在这种情况下，盘接收部分具有倾斜或倾斜的平面。 因此，限定由夹紧引起的盘的变形量和方向，并且独立于温度变化获得稳定的头部悬浮量可以防止盘的变形的发生。