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21. 发明申请

US20070292060A1 Hydrodynamic bearing, motor including the same, and recording and reproducing apparatus 有权
标题翻译：流体动力轴承，包括其的马达以及记录和再现装置
公开(公告)号：US20070292060A1
公开(公告)日：2007-12-20
申请号：US11812024
申请日：2007-06-14
申请人： Keigo Kusaka , Masafumi Kumoi
发明人： Keigo Kusaka , Masafumi Kumoi
IPC分类号： F16C32/06
CPC分类号： H02K7/085 , F16C17/026 , F16C17/045 , F16C17/107 , F16C33/107 , F16C2370/12 , G11B19/2036
摘要： A hydrodynamic bearing, a motor including the same, and a recording and reproducing apparatus which can improve vibration resistance property and suppress noises even in a situation where vibration is expected are provided. Radial hydrodynamic grooves formed on an inner peripheral surface of a sleeve have a shape which satisfy relational expression L2
摘要翻译：提供了一种流体动力轴承，包括该液压动力轴承的马达，以及即使在预期的振动的情况下也能够提高耐振性和抑制噪声的记录和再现装置。形成在套筒的内周面上的径向流体动力槽具有满足关系式L 2

22. 发明授权

US07196868B2 Hydrodynamic bearing and disk recording/reproducing apparatus having a vent inside a fixed shaft 失效
标题翻译：流体动力轴承和盘记录/重放装置，其具有在固定轴内的排气口
公开(公告)号：US07196868B2
公开(公告)日：2007-03-27
申请号：US10725150
申请日：2003-12-01
申请人： Takafumi Asada , Hiroaki Saito , Keigo Kusaka , Daisuke Itou
发明人： Takafumi Asada , Hiroaki Saito , Keigo Kusaka , Daisuke Itou
IPC分类号： G11B17/08 , G11B17/02
CPC分类号： F16C33/107 , F16C17/107 , F16C2370/12 , G11B17/038 , G11B19/2009
摘要： Radial dynamic pressure grooves are provided in a first region 4A and a second region 4B on the side of a fixed shaft 2. A vent 2D is provided inside the top end 2A of the fixed shaft 2. The vent 2D connects spaces over and under a flange 3 to each other. The flange 3 in an annular shape is fixed at the top end 2A of the fixed shaft 2. Thrust dynamic pressure grooves 3A and 3B are provided on the surfaces of the flange 3. A circulation hole 3C is provided in the flange 3, and connects spaces over and under the flange 3 to each other. A sleeve 4 revolves around the fixed shaft 2. A thrust plate 6 in an annular shape is fixed at the top of the sleeve 4 and opposed to the flange 3. The first region 4A, the second region 4B, the thrust dynamic pressure grooves 3A and 3B, and the circulation hole 3C of the flange 3 are filled with a lubricant 7. At the revolution of the sleeve 4, the lubricant 7 is concentrated in each central part of the first region 4A, the second region 4B, and the thrust dynamic pressure grooves 3A and 3B and their vicinities, then raising the pressure. The sleeve 4 keeps its stable high-speed revolution, avoiding contact with the fixed shaft 2. The lubricant 7 circulates on surfaces of the flange 3 through the circulation hole 3C.
摘要翻译：径向动压槽设置在固定轴2一侧的第一区域4A和第二区域4B中。在固定轴2的顶端部2A内设置有排气口D D。通风口2 D将法兰3上方和下方的空间相互连接。环状的凸缘3固定在固定轴2的顶端部2A。在凸缘3的表面设置有推力动压槽3A和3B。在凸缘3中设置有循环孔3C，并且将凸缘3上方和下方的空间彼此连接。套筒4围绕固定轴2旋转。环形的止推板6固定在套筒4的顶部并与凸缘3相对。第一区域4A，第二区域4B，推力动压力槽3A和3B以及凸缘3的循环孔3C填充有润滑剂7。在套筒4的旋转时，润滑剂7集中在第一区域4A，第二区域4B和推力动压力槽3A和3B的各个中心部分及其附近，然后升高压力。套筒4保持其稳定的高速旋转，避免与固定轴2接触。润滑剂7通过循环孔C3在凸缘3的表面上循环。

23. 发明授权

US07011450B2 Fluid dynamic bearing device and motor including the device 失效
标题翻译：流体动力轴承装置和电动机包括装置
公开(公告)号：US07011450B2
公开(公告)日：2006-03-14
申请号：US10724046
申请日：2003-12-01
申请人： Keigo Kusaka , Daisuke Itou , Hiroaki Saito , Takafumi Asada , Yasuhiro Asaida
发明人： Keigo Kusaka , Daisuke Itou , Hiroaki Saito , Takafumi Asada , Yasuhiro Asaida
IPC分类号： F16C32/06
CPC分类号： F16C17/107 , F16C33/107 , F16C33/1085 , F16C2370/12 , G11B19/2018
摘要： A fluid dynamic bearing device including a shaft having an interior pressure regulating hole by which a center portion of a thrust surface confronting a thrust plate and a lubricant pool portion of an inner circumferential surface of a sleeve are communicated with each other. Thus, the device is capable of obtaining stable thrust floating characteristics and preventing leaks of the lubricant as well as exhaustion of the lubricant.
摘要翻译：一种流体动力轴承装置，包括具有内部压力调节孔的轴，通过该内部压力调节孔将推力板的中心部分与推力板的内周面的润滑剂池部分相互连通。因此，该装置能够获得稳定的推力浮动特性并防止润滑剂的泄漏以及润滑剂的耗尽。

24. 发明授权

US06933642B2 Hydrodynamic gas bearing 失效
标题翻译：流体动力气体轴承
公开(公告)号：US06933642B2
公开(公告)日：2005-08-23
申请号：US10164806
申请日：2002-06-07
申请人： Keigo Kusaka , Takafumi Asada
发明人： Keigo Kusaka , Takafumi Asada
IPC分类号： F16C17/10 , F16C32/00 , F16C32/04 , F16C33/10 , G11B19/20 , H02K7/09 , H02K7/08 , H02K33/02
CPC分类号： F16C32/0427 , F16C17/026 , F16C17/107 , F16C33/1015 , F16C39/063 , F16C2370/12 , G11B19/2018 , H02K7/09
摘要： A rotatable hub in which a supporting shaft having hydrodynamic pressure generating grooves is inserted comprises an annular thrust bearing plate in its lower portion and annular permanent magnets in its upper portion. The thrust bearing plate is inserted between the lower end face of the supporting shaft and a thrust flange fixed to the supporting shaft, maintaining the respective clearances D and E.The permanent magnets on the hub are confronting in such a manner that an upward and downward repulsive forces are generated between permanent magnets mounted on the supporting shaft, respectively maintaining the clearances B and C. Since the clearances B and C are greater than the clearances D and E, the permanent magnets will not mutually contact even when the hub is caused to move upward or downward by an external force during rotation and the thrust bearing plate contacts with the lower end face of the supporting shaft or the thrust flange.
摘要翻译：其中插入具有流体动力学压力产生槽的支撑轴的可旋转轮毂包括其下部的环形止推轴承板和其上部的环形永磁体。推力轴承板插入在支撑轴的下端面和固定在支撑轴上的推力凸缘之间，保持相应的间隙D和E.轮毂上的永久磁铁面向上方和下方在安装在支撑轴上的永磁体之间产生分别保持间隙B和C的排斥力。由于间隙B和C大于间隙D和E，所以即使当毂被引起时，永磁体也不会相互接触在旋转期间通过外力向上或向下移动，并且止推轴承板与支撑轴的下端面或推力凸缘接触。

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