公开(公告)号：US20070092172A1

公开(公告)日：2007-04-26

申请号：US11583800

申请日：2006-10-20

申请人： Rikuro Obara ,  Kyoji Kato

发明人： Rikuro Obara ,  Kyoji Kato

IPC分类号： F16C32/06

CPC分类号： F16C17/10 ,  F16C17/045 ,  F16C33/103 ,  F16C33/745

摘要： A fluid dynamic bearing is provided. A structure in which a shaft member and an annular member fitted about the shaft member are rotatably supported by a bearing member and an annular member on the bearing member has a fifth gap for storing a lubricating fluid and supplying it to a second gap below the annular member on the shaft member and a third gap around its outer periphery through a fourth gap. The fourth and fifth gaps are tapered to produce a capillary drawing force toward the third and second gaps, so that the lubricating fluid may be supplied effectively from the fifth gap to the second and third gaps. This makes it possible to suppress any sudden formation of a reduced pressure upon exposure to impact or vibration to prevent the leakage of any lubricating fluid caused by the generation of bubbles, while making up for the loss of any lubricating fluid by vaporization.

摘要翻译： 提供流体动力轴承。 其中轴构件和围绕轴构件安装的环形构件由轴承构件可旋转地支撑并且在轴承构件上的环形构件的结构具有用于存储润滑流体并将其提供到环形以下的第二间隙的第五间隙 构件，并且通过第四间隙围绕其外周缘具有第三间隙。 第四和第五间隙是锥形的，以产生朝向第三和第二间隙的毛细抽吸力，使得润滑流体可以有效地从第五间隙供应到第二和第三间隙。 这使得可以在暴露于冲击或振动时抑制任何突然形成的减压，以防止由于产生气泡而导致的润滑流体的泄漏，同时弥补通过汽化而导致的任何润滑流体的损失。

公开(公告)号：US06794774B2

公开(公告)日：2004-09-21

申请号：US10316829

申请日：2002-12-12

申请人： Rikuro Obara ,  Hiroshi Yoshikawa

发明人： Rikuro Obara ,  Hiroshi Yoshikawa

IPC分类号： H02K524

CPC分类号： G11B19/2009 ,  F16C19/54 ,  F16C35/077 ,  F16C2370/12

摘要： A spindle motor of the present invention is capable of keeping its ball (5a, 5b)'s pre-load constant, because a sleeve (6) is capable of being resiliently deformed due to its resiliency, and therefore capable of constantly keeping a pre-load applied to the balls (5a, 5b) from inner and inner ring raceways of inner and outer rings (3a, 4a, 3b, 4b) of ball bearings (3, 4). In this motor, a rotor hub (7) has an axial center bore (8). This bore (8) is provided with: a large-diameter bore portions in its opposite axial ends; and, a small-diameter bore portion (8a) axially interposed between the large-diameter bore portions. An inner diameter of the small-diameter bore portion (8a) is smaller than an outer diameter of the sleeve (6). The axial center bore (8) of the hub (7) is fitted to an outer peripheral surface of the sleeve (6) in an insertion manner through a heating shrinkage fit process, so that the sleeve (6) is subjected to a radially inwardly exerted pressure applied from outside to resiliently deform radially inwardly. As a result, a small-diameter portion (6a) is formed in the sleeve (6) to extend radially inwardly between the outer rings (3b, 4b).

摘要翻译： 本发明的主轴电动机能够保持其球（5a，5b）的预加载恒定，因为套筒（6）由于其弹性而能够弹性变形，因此能够不断地保持预先 从滚珠轴承（3,4）的内圈和外圈（3a，4a，3b，4b）的内圈和内圈滚道施加到滚珠（5a，5b）上。 在该电动机中，转子毂（7）具有轴向中心孔（8）。 该孔（8）设置有：在其相对轴向端部的大直径孔部分; 以及轴向插入在大直径孔部之间的小直径孔部（8a）。 小直径孔部（8a）的内径小于套筒（6）的外径。 轮毂（7）的轴向中心孔（8）通过加热收缩配合工艺以插入方式装配到套筒（6）的外周表面，使得套筒（6）经受径向向内 施加从外部施加的压力以径向向内弹性变形。 结果，在套筒（6）中形成小直径部分（6a），以在外环（3b，4b）之间径向向内延伸。

公开(公告)号：US06777360B2

公开(公告)日：2004-08-17

申请号：US10073753

申请日：2002-02-11

申请人： Kazuo Hokkirigawa ,  Rikuro Obara ,  Motoharu Akiyama

发明人： Kazuo Hokkirigawa ,  Rikuro Obara ,  Motoharu Akiyama

IPC分类号： C04B3552

CPC分类号： C04B35/62204 ,  C04B18/10 ,  C04B33/132 ,  C04B33/20 ,  C04B33/32 ,  C04B33/36 ,  C04B35/10 ,  C04B35/14 ,  C04B35/18 ,  C04B35/48 ,  C04B35/5626 ,  C04B35/565 ,  C04B35/583 ,  C04B35/584 ,  C04B35/597 ,  C04B35/62213 ,  C04B35/6262 ,  C04B35/6263 ,  C04B35/6264 ,  C04B35/6267 ,  C04B35/6309 ,  C04B35/6316 ,  C04B35/63404 ,  C04B35/63416 ,  C04B35/638 ,  C04B2235/3201 ,  C04B2235/3217 ,  C04B2235/3244 ,  C04B2235/3418 ,  C04B2235/3427 ,  C04B2235/3826 ,  C04B2235/3843 ,  C04B2235/3847 ,  C04B2235/386 ,  C04B2235/3869 ,  C04B2235/3873 ,  C04B2235/48 ,  C04B2235/5427 ,  C04B2235/5436 ,  C04B2235/604 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6567 ,  C04B2235/94 ,  C04B2235/96 ,  Y02P40/69 ,  Y02W30/92

摘要： A ceramic material suitable for use in production of paving tiles, construction tiles, flooring in offices, flooring in machinery plants and so forth is obtained by a method comprising steps of mixing defatted bran derived from rice bran with a thermosetting resin before kneading, subjecting a kneaded mixture thus obtained to a primary firing in an inert gas at a temperature in a range of 700 to 1000° C., pulverizing the kneaded mixture after the primary firing into carbonized powders, kneading the carbonized powders with which ceramic powders, a solvent, and a binder as desired are mixed into a plastic workpiece (kneaded mass), pressure-forming the plastic workpiece at pressure in a range of 10 to 100 MPa, and subjecting a formed plastic workpiece thus obtained again to firing in an inert gas atmosphere at a temperature in a range of 100 to 1400° C.

摘要翻译： 一种适用于生产铺路砖，建筑砖，办公室地板，机械设备地板等的陶瓷材料通过以下步骤获得，该方法包括以下步骤：将来自米糠的脱脂麸与捏合前的热固性树脂混合， 将该混炼物在惰性气体中于700〜1000℃的温度进行初次烧成，将一次焙烧后的混炼物粉碎成碳化粉末，将其中的陶瓷粉末，溶剂， 将根据需要的粘合剂混合到塑料工件（捏合物）中，在10〜100MPa的压力下对塑料工件进行加压成型，并将如此得到的成形塑料工件在惰性气体气氛中进行烧成 温度范围为100〜1400℃

公开(公告)号：US06639336B2

公开(公告)日：2003-10-28

申请号：US09991716

申请日：2001-11-26

申请人： Rikuro Obara

发明人： Rikuro Obara

IPC分类号： H02K708

CPC分类号： F16C17/08 ,  F16C2370/12 ,  G11B19/2009 ,  H02K5/1675 ,  H02K7/086 ,  Y10T29/49009 ,  Y10T29/49012 ,  Y10T29/49798

摘要： A spindle motor having a pivot which tip portion can easily be formed by a spherical surface having high precision, high hardness, the diameter of which can be determined as desired, the tip portion 6a of the pivot 6 is formed by cutting a steel ball used in a bearing or the like having any diameter. The pivot 6 having a spherical surface 6a is formed by fixing the pivot tip portion 6a to one side surface 6c of a substantially cylindrical shaft portion 6b. As a result, the spherical surface having a high precision, high hardness which diameter can be determined as desired can easily be formed at the tip portion 6a of the pivot 6.

公开(公告)号：US06599020B2

公开(公告)日：2003-07-29

申请号：US10006156

申请日：2001-12-10

申请人： Rikuro Obara

发明人： Rikuro Obara

IPC分类号： F16C3376

CPC分类号： F16C33/7859 ,  F16C19/06 ,  F16C33/78 ,  F16C33/80

摘要： A double seal bearing includes a labyrinth seal mechanism. The double seal bearing is provided with a pair of annular inner and outer sealing plates having respective central openings with a remaining slight clearance between each respective sealing plate and one of the inner and outer races, respectively, so as to assure the labyrinth seal function.

公开(公告)号：US06573215B2

公开(公告)日：2003-06-03

申请号：US09990430

申请日：2001-11-21

申请人： Kazuo Hokkirigawa ,  Rikuro Obara ,  Motoharu Akiyama

发明人： Kazuo Hokkirigawa ,  Rikuro Obara ,  Motoharu Akiyama

IPC分类号： B01J2026

CPC分类号： F16C33/30 ,  C04B35/62213 ,  C04B35/6262 ,  C04B38/00 ,  C04B2235/3217 ,  C04B2235/3244 ,  C04B2235/3826 ,  C04B2235/3843 ,  C04B2235/3847 ,  C04B2235/386 ,  C04B2235/3869 ,  C04B2235/3873 ,  C04B2235/48 ,  C04B2235/5436 ,  C04B2235/604 ,  C04B2235/658 ,  C04B2235/96 ,  C04B2235/9615 ,  Y02E50/14 ,  Y02W30/92 ,  C04B18/101 ,  C04B35/00 ,  C04B35/52

摘要： A porous material suitable for use in a bearing rolling element. The porous material is obtained by a process which includes mixing degreased bran derived from rice bran with a thermosetting resin before kneading, subjecting a kneaded mixture to a primary firing in an inert gas at a temperature in a range of 700 to 100° C., pulverizing the kneaded mixture after the primary firing into carbonized powders sieved through a screen of 100-mesh, mixing the carbonized powders or the carbonized powders and ceramic powders with a thermosetting resin before kneading, pressure-forming a kneaded mixture thus obtained at a pressure in a range of 20 to 30 MPa, and applying a heat treatment again to a formed kneaded mixture in the inert gas at a temperature in a range of 100 to 1100° C.

摘要翻译： 适用于轴承滚动元件的多孔材料。 该多孔材料通过以下方法获得，该方法包括在捏合之前将来自米糠的脱脂麸与热固性树脂混合，将混合物在惰性气体中在700至100℃的温度下进行初次烧制， 将一次焙烧后的捏合混合物粉碎成通过100目筛网筛分的碳化粉末，在捏合之前将碳化粉末或碳化粉末和陶瓷粉末与热固性树脂混合，在压力下压制所得的捏合混合物 在20〜30MPa的范围内，在惰性气体中，在100〜1100℃的温度下，再次对形成的混炼物进行热处理。

公开(公告)号：US06556375B2

公开(公告)日：2003-04-29

申请号：US10252168

申请日：2002-09-23

申请人： Rikuro Obara

发明人： Rikuro Obara

IPC分类号： G11B17022

CPC分类号： G11B19/2009 ,  G11B17/038

摘要： The object of the present invention is to provide a hard disk drive device having a bearing device of larger size and sufficient strength, improved impact resistance, high accuracy of rotation, and high reliability. In accordance with the present invention, a hard disk drive device comprises a motor including: a rotor or hub having around an outer periphery thereof a downwardly depending flange, wherein the hub is journalled rotatably on a base by way of a bearing; the hub provided with a magnet on the inner peripheral surface of the downwardly depending flange; a stator provided on the base so as to be opposed face to face with the magnet, the stator including coils; and a magnetic disk or disks having a central aperture to be fitted around the outer peripheral surface of flange provided around the hub of the motor, the magnetic disk adapted to be rotated by the motor; wherein the inner diameter of the downwardly depending flange of the hub of the motor is enlarged, so that the outer and inner diameters of the magnet confined within the downwardly depending flange, and the outer and inner diameters of the stator are also enlarged to allow the outer diameter of the bearing device to be enlarged.

摘要翻译： 本发明的目的是提供一种硬盘驱动装置，其具有尺寸更大，强度更高，耐冲击性更好，旋转精度高，可靠性高的轴承装置。 根据本发明，一种硬盘驱动装置包括电动机，该电动机包括：转子或轮毂，其外周具有向下悬垂的凸缘，其中所述轮毂通过轴承可旋转地安装在基座上; 毂在向下悬垂的凸缘的内周面上设置有磁体; 定子，其设置在所述基座上以与所述磁体面对面，所述定子包括线圈; 以及具有中心孔的磁盘或磁盘，所述中心孔围绕设置在所述电动机轮毂的凸缘的外周面周围，所述磁盘适于由所述电机旋转; 其中电动机轮毂向下悬垂的凸缘的内径扩大，使得限制在向下悬垂法兰内的磁体的外径和内径以及定子的外径和内径也被扩大，以允许 轴承装置的外径要扩大。

公开(公告)号：US06512316B2

公开(公告)日：2003-01-28

申请号：US09795490

申请日：2001-03-01

申请人： Rikuro Obara ,  Hiroshi Yoshikawa

发明人： Rikuro Obara ,  Hiroshi Yoshikawa

IPC分类号： H02K500

CPC分类号： G11B19/2009 ,  F16C19/54 ,  F16C35/077 ,  F16C2370/12

摘要： A spindle motor of the present invention is capable of keeping its ball (5a, 5b)'s pre-load constant, because a sleeve (6) is capable of being resiliently deformed due to its resiliency, and therefore capable of constantly keeping a pre-load applied to the balls (5a, 5b) from inner and inner ring raceways of inner and outer rings (3a, 4a, 3b, 4b) of ball bearings (3, 4). In this motor, a rotor hub (7) has an axial center bore (8). This bore (8) is provided with: a large-diameter bore portions in its opposite axial ends; and, a small-diameter bore portion (8a) axially interposed between the large-diameter bore portions. An inner diameter of the small-diameter bore portion (8a) is smaller than an outer diameter of the sleeve (6). The axial center bore (8) of the hub (7) is fitted to an outer peripheral surface of the sleeve (6) in an insertion manner through a heating shrinkage fit process, so that the sleeve (6) is subjected to a radially inwardly exerted pressure applied from outside to resiliently deform radially inwardly. As a result, a small-diameter portion (6a) is formed in the sleeve (6) to extend radially inwardly between the outer rings (3b, 4b).

摘要翻译： 本发明的主轴电动机能够保持其球（5a，5b）的预加载恒定，因为套筒（6）由于其弹性而能够弹性变形，因此能够不断地保持预先 从滚珠轴承（3,4）的内圈和外圈（3a，4a，3b，4b）的内圈和内圈滚道施加到滚珠（5a，5b）上。 在该电动机中，转子毂（7）具有轴向中心孔（8）。 该孔（8）设置有：其相对轴向端部的大直径孔部; 以及轴向插入在大直径孔部之间的小直径孔部（8a）。 小直径孔部（8a）的内径小于套筒（6）的外径。 轮毂（7）的轴向中心孔（8）通过加热收缩配合工艺以插入方式装配到套筒（6）的外周表面，使得套筒（6）经受径向向内 施加从外部施加的压力以径向向内弹性变形。 结果，在套筒（6）中形成小直径部分（6a），以在外环（3b，4b）之间径向向内延伸。

公开(公告)号：US06308772B1

公开(公告)日：2001-10-30

申请号：US09328367

申请日：1999-06-09

申请人： Rikuro Obara ,  Kaoru Matsumoto

发明人： Rikuro Obara ,  Kaoru Matsumoto

IPC分类号： H05K720

CPC分类号： H01L23/3672 ,  H01L23/4006 ,  H01L23/4093 ,  H01L2023/405 ,  H01L2023/4056 ,  H01L2023/4062 ,  H01L2023/4087 ,  H01L2924/0002 ,  H01L2924/00

摘要： A heat sink provided with a heat conducting section 8 having a heat absorbing surface in contact with the heat emitting component, and fins 10 formed by being projected from the said heat conducting section 8, said fins 10 having air holes 11, and heat conducting section 8 being provided with clamps 7 for fixing to the heat emitting component.

摘要翻译： 散热片设有具有与发热部件接触的吸热面的导热部8，以及从所述导热部8突出而形成的散热片10，所述散热片10具有气孔11，导热部 8设置有用于固定到发热部件的夹具7。

公开(公告)号：US06181513B2

公开(公告)日：2001-01-30

申请号：US09310943

申请日：1999-05-13

申请人： Rikuro Obara

发明人： Rikuro Obara

IPC分类号： G11B1702

CPC分类号： G11B19/2009 ,  F16C19/18 ,  F16C33/80 ,  F16C2370/12 ,  H02K5/124 ,  H02K5/1737

摘要： A spindle motor including a double row bearing apparatus 2 for supporting a rotor hub 9 rotatably on a base 1. A labyrinth seal mechanism is incorporated into the bearing apparatus. The double row bearing apparatus includes a two-stepped shaft 3 and a pair of rows of rotating bodies 5a and 5b interposed between the shaft and a sleeve outer race 4 surrounding the shaft. A pair of inner and outer sealing plates 13a and 13b are provided between the spacing defined between the sleeve outer race and the inner race fitted around the reduced diameter portion of the shaft to form a labyrinth seal. A pair of inner and outer sealing plates 14a and 14b are also provided between the sleeve outer race and the inner race fitted around the enlarged diameter shaft portion to form a labyrinth seal. Thus, there is no necessity for the manufacturer of the motor to incorporate the additional sealing mechanism into the motor. Rather, the only necessity is to assemble the motor by employing the bearing apparatus to which the labyrinth seal mechanism or mechanisms are already incorporated by the maker of the bearing.

摘要翻译： 一种主轴电动机，其包括用于将转子毂9可旋转地支撑在基座1上的双列轴承装置2.在轴承装置中结合有迷宫式密封机构。 双列轴承装置包括一个两级轴3和一对旋转体5a和5b，它们插在轴和围绕轴的套筒外圈4之间。 一对内密封板和外密封板13a和13b设置在套筒外圈和安装在轴的减径部分周围的内圈之间的间隔之间以形成迷宫式密封。 一对内外密封板14a和14b也设置在套筒外圈和安装在扩大直径轴部分周围的内圈之间以形成迷宫式密封。 因此，马达的制造商不需要将额外的密封机构并入马达。 相反，唯一的必要性是通过采用由轴承的制造商已经将迷宫式密封机构或机构并入的轴承装置来组装电动机。