公开(公告)号：US20070103020A1

公开(公告)日：2007-05-10

申请号：US11645630

申请日：2006-12-27

申请人： Rikuro Obara ,  Akio Okamiya

发明人： Rikuro Obara ,  Akio Okamiya

IPC分类号： H02K5/16 ,  F16C32/06

CPC分类号： F16C33/107 ,  F16C17/026 ,  F16C17/08 ,  H02K5/1675 ,  H02K7/085

摘要： A motor that can prevent damages on the fluid dynamic bearing. A ball is press-fitted into the end surface of the shaft body, and the ball is disposed in such a manner that the tip portion of the ball comes to the higher position with respect to the end surface of the annular body. When the shaft is at rest, the ball abuts against the upper surface of the counter plate, and the end surface of the annular body is brought into a state of being raised from the upper surface of the counter plate, so that the situation in which the end surface of the annular body and the upper surface of the counter plate are brought into almost fully touch each other can be avoided. Therefore, when the operation is started, the circulation speed of a fluid increases and a fluid layer is quickly formed. As a consequent, the fluid circularity blocking action, which could be occurred in the relate art, is avoided, and generation of scratch caused by starting rotation in the tightly sticked state can be positively prevented.

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：US06683264B2

公开(公告)日：2004-01-27

申请号：US10408061

申请日：2003-04-04

申请人： Rikuro Obara ,  Masamitsu Osada ,  Masayuki Yoneyama

发明人： Rikuro Obara ,  Masamitsu Osada ,  Masayuki Yoneyama

IPC分类号： H01H1370

CPC分类号： H01H3/125

摘要： This low profile key switch structure provides a substantial reduction in the height or thickness of a key switch as compared to conventional and other low profile switches. Substantial height reduction in key switch structures allows the size and thickness of notebook-type personal computers and the like to be similarly reduced. One feature of this low profile key switch structure is that unlike in conventional key switch structures the membrane switch and frame structures do not over lap to cause unnecessary height in the structure. Another feature of this key switch structure is that the frames are formed to include the free motion range limiters. The frames are further formed so that they may be embedded in the reinforcing base plate in such a manner that allows the height of the key switch to be further reduced. This low profile key switch structure is also designed to eliminate unwanted key top movement that often occurs in conventional and other switches when the key top is depressed.

摘要翻译： 与常规和其他低剖面开关相比，这种低轮廓键开关结构大大降低了钥匙开关的高度或厚度。 钥匙开关结构的大幅降低，能够减小笔记本型个人电脑等的尺寸和厚度。 这种低轮廓键开关结构的一个特征是，与传统的键开关结构不同，薄膜开关和框架结构不会超过搭接造成结构中不必要的高度。 该键开关结构的另一特征在于，框架形成为包括自由运动范围限制器。 框架进一步形成为使得它们可以以允许键开关的高度进一步减小的方式嵌入加强基板中。 这种低轮廓键开关结构也被设计成消除了当按键顶部被按下时常规和其它开关中经常出现的不必要的键顶移动。

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：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。