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31. 发明授权

US07901139B2 Hydrodynamic bearing type rotary device 有权
标题翻译：流体动力轴承式旋转装置
公开(公告)号：US07901139B2
公开(公告)日：2011-03-08
申请号：US11808731
申请日：2007-06-12
申请人： Takafumi Asada , Hiroaki Saito , Daisuke Ito
发明人： Takafumi Asada , Hiroaki Saito , Daisuke Ito
IPC分类号： F16C32/06
CPC分类号： H02K7/085 , F16C17/107
摘要： In a hydrodynamic bearing type rotary device, relationships between the number of times of intermittence life, a bearing load, lubricating fluid viscosity, a bearing size, and the like are considered in order to provide a hydrodynamic bearing type rotary device which can secure appropriate intermittence life. In a hydrodynamic bearing type rotary device, a shaft is inserted into a bearing hole of a sleeve so as to be relatively rotatable. A value of a function (Nd) is set to be 100,000 or higher: wherein Nd=η/(S·Ff·P·D).
摘要翻译：在流体动力轴承型旋转装置中，考虑间歇寿命次数，轴承负荷，润滑液粘度，轴承尺寸等之间的关系，以提供能够确保适当的间歇性的流体动力轴承型旋转装置生活。在流体动力轴承型旋转装置中，将轴插入到套筒的轴承孔中以相对旋转。函数（Nd）的值设定为100,000以上：其中，Nd =＆eegr /（S·Ff·P·D）。

32. 发明授权

US07883270B2 Hydrodynamic bearing type rotary device and recording and reproducing apparatus including the same 有权
标题翻译：流体动力轴承型旋转装置及包括其的记录和再现装置
公开(公告)号：US07883270B2
公开(公告)日：2011-02-08
申请号：US11812170
申请日：2007-06-15
申请人： Takafumi Asada , Hiroyuki Kiriyama , Hiroaki Saito , Daisuke Ito
发明人： Takafumi Asada , Hiroyuki Kiriyama , Hiroaki Saito , Daisuke Ito
IPC分类号： F16C32/06
CPC分类号： F16C17/045 , F16C17/026 , F16C33/107 , F16C2370/12
摘要： A hydrodynamic bearing type rotary device is configured to prevent air from being trapped inside a bearing and causing the bearing to have oil film rupture and NPPR to deteriorate. In the device, a flange having a shape substantially like a disc is provided integrally with a shaft near its lower portion. A sleeve having a bearing hole is fitted to the shaft so as to be relatively rotatable. Hydrodynamic grooves are provided on at least one of an outer periphery of the shaft and an inner periphery of the sleeve. The flange forms a thrust bearing surface with a lower end surface of the sleeve. Hydrodynamic grooves are provided on at least one of the lower surface of the sleeve and an upper surface of the flange. During rotation of the bearing, the hydrodynamic grooves circulate the lubricant. Capillary pressures at respective portions in the lubricant circulation path have different magnitudes. The principle that air tends to move toward the portion having a smaller capillary pressure is utilized to make it difficult for the air to be trapped inside the bearing and to smoothly discharge the air.
摘要翻译：流体动力轴承型旋转装置被构造成防止空气被捕获在轴承内并导致轴承具有油膜破裂和NPPR劣化。在该装置中，具有基本上类似于盘的形状的凸缘与其下部附近的轴一体设置。具有轴承孔的套筒被安装在轴上以相对旋转。流体动力槽设置在轴的外周和套筒的内周中的至少一个上。凸缘形成具有套筒下端表面的止推轴承表面。流体动力槽设置在套筒的下表面和凸缘的上表面中的至少一个上。在轴承旋转期间，流体动力槽使润滑剂循环。润滑剂循环路径各部分的毛细管压力具有不同的大小。利用空气倾向于朝向具有较小毛细管压力的部分移动的原理，使得难以将空气捕获在轴承内并平滑地排出空气。

33. 发明申请

US20100085661A1 HYDRODYNAMIC BEARING DEVICE AND DISK ROTATION APPARATUS 失效
标题翻译：水力轴承装置和盘旋转装置
公开(公告)号：US20100085661A1
公开(公告)日：2010-04-08
申请号：US12412870
申请日：2009-03-27
申请人： Takafumi ASADA , Hiroaki Saito , Takao Yoshitsugu , Keigo Kusaka , Hiroyuki Kiriyama , Daisuke Ito
发明人： Takafumi ASADA , Hiroaki Saito , Takao Yoshitsugu , Keigo Kusaka , Hiroyuki Kiriyama , Daisuke Ito
IPC分类号： G11B17/02 , F16C32/06
CPC分类号： F16C17/107 , F16C33/103 , F16C33/107 , F16C2370/12
摘要： In a hydrodynamic bearing device in which a radial bearing face having a dynamic pressure generating groove on a shaft or an inner periphery of a sleeve is provided and a clearance between the shaft and the sleeve is filled with lubricant, an annular depression is provided on one end face of the sleeve adjacent to a rotor hub and a cover plate for covering the depression is attached to the sleeve so as to define a reservoir for the lubricant or air for the purpose of preventing such a risk that absence of an oil film occurs in clearances of a bearing of the hydrodynamic bearing device due to outflow of oil upon forcing of the oil by air received into the bearing. A step portion is provided on the other end face of the sleeve such that the step portion and the reservoir are communicated with each other by a communication hole. During operation of the hydrodynamic bearing device, air in the hydrodynamic bearing device reaches the reservoir via the communication hole so as to be discharged from the reservoir.
摘要翻译：在一种流体动力轴承装置中，其中设置有在轴上的动压产生槽或套筒的内周上的径向支承面，并且轴与套筒之间的间隙充满润滑剂，环形凹部设置在一个与转子轮毂相邻的套筒的端面和用于覆盖凹部的盖板附接到套筒上，以便限定用于润滑剂或空气的储存器，以便防止在油膜中不存在油膜的风险由于在接收到轴承中的空气迫使油被油流出时，流体动力轴承装置的轴承的间隙。台阶部设置在套筒的另一端面上，使得台阶部分和储存器通过连通孔相互连通。在流体动力轴承装置的操作期间，流体动力轴承装置中的空气经由连通孔到达储存器，以便从储存器排出。

34. 发明授权

US07674043B2 Hydrodynamic bearing rotary device 有权
标题翻译：流体动力轴承旋转装置
公开(公告)号：US07674043B2
公开(公告)日：2010-03-09
申请号：US11723316
申请日：2007-03-19
申请人： Takafumi Asada , Hiroaki Saito , Daisuke Itou , Hiroyuki Kiriyama , Tomoharu Takeda
发明人： Takafumi Asada , Hiroaki Saito , Daisuke Itou , Hiroyuki Kiriyama , Tomoharu Takeda
IPC分类号： F16C32/06
CPC分类号： F16C33/102 , F16C17/107 , F16C33/107 , F16C33/74 , F16C2370/12
摘要： An object of the present invention is to provide a hydrodynamic bearing type rotary device which can improve rotation performance, suppress a friction torque, and reduce power consumption of motor, and a recording and reproducing apparatus including the same. A shaft having a flange on one end and a hub on the other end is provided with a bearing of a sleeve so as to be rotatable. The sleeve includes a communication hole. A third gap between the hub and the sleeve end surface is a flow path, and is connected to the communication hole. Provided that a first gap between a thrust plate 4 and the flange 3 is S1, a second gap between the flange 3 and a lower end surface of the sleeve 1 is S2, and a third gap between the upper end surface of the sleeve 1 and the hub 7 is S3, widths of the gaps satisfy the relational expression, S3>(S1+S2).
摘要翻译：本发明的目的是提供一种能够提高旋转性能，抑制摩擦转矩并降低电动机的功率消耗的流体动力轴承型旋转装置，以及包括其的记录和再现装置。具有一端的凸缘和另一端的毂的轴设置有可旋转的套筒的轴承。套筒包括一个连通孔。轮毂和套筒端面之间的第三间隙是流动路径，并连接到连通孔。假设推力板4和凸缘3之间的第一间隙为S1，凸缘3与套筒1的下端面之间的第二间隙为S2，套管1的上端面与轮毂7是S3，间隙的宽度满足关系式S3>（S1 + S2）。

35. 发明申请

US20070140605A1 Hydrodynamic bearing type rotary device and recording and reproduction apparatus including the same 有权
标题翻译：流体动力轴承型旋转装置及包括其的记录和再现装置
公开(公告)号：US20070140605A1
公开(公告)日：2007-06-21
申请号：US11492166
申请日：2006-07-25
申请人： Takafumi Asada , Hiroaki Saito , Daisuke Ito
发明人： Takafumi Asada , Hiroaki Saito , Daisuke Ito
IPC分类号： F16C32/06
CPC分类号： F16C33/103 , F16C17/107 , F16C33/1085 , F16C33/745 , F16C2370/12
摘要： A hydrodynamic bearing type rotary device which allows bubbles in a lubricating fluid to be surely discharged from a bearing portion is provided. A hydrodynamic bearing mechanism 40 of the hydrodynamic bearing type rotary device is formed of a sleeve 1, a shaft 2, a flange 3, a thrust plate 4, a seal cap 5, and oil 6. A first fluid reservoir F is formed between the sleeve 1, the flange 3, and the thrust plate 4. A second fluid reservoir H is formed between the sleeve 1 and the seal cap 5. In the sleeve 1, a communication hole G extending along an axial direction is formed. The first fluid reservoir F and the second fluid reservoir H communicate with each other through the communication hole G. The oil 6 is filled between the members. A capillary pressure is higher in the first fluid reservoir F than in the second fluid reservoir H.
摘要翻译：提供了允许润滑流体中的气泡从轴承部确定地排出的流体动力轴承型旋转装置。流体动力轴承型旋转装置的流体动力轴承机构40由套筒1，轴2，凸缘3，止推板4，密封盖5和油6形成。第一流体储存器F形成在套筒1，凸缘3和止推板4.第二流体储存器H形成在套筒1和密封盖5之间。在套筒1中形成有沿轴向延伸的连通孔G. 第一流体储存器F和第二流体储存器H通过连通孔G彼此连通。油6填充在构件之间。第一流体储存器F中的毛细管压力高于第二流体储存器H中的毛细管压力。

36. 发明申请

US20070166905A1 Method of manufacturing semiconductor device with trench 审中-公开
标题翻译：制造具有沟槽的半导体器件的方法
公开(公告)号：US20070166905A1
公开(公告)日：2007-07-19
申请号：US11709147
申请日：2007-02-22
申请人： Masamichi Yanagida , Hirotoshi Kubo , Junichiro Tojo , Hiroaki Saito , Masahito Onda
发明人： Masamichi Yanagida , Hirotoshi Kubo , Junichiro Tojo , Hiroaki Saito , Masahito Onda
IPC分类号： H01L21/8234 , H01L21/336
CPC分类号： H01L29/7813 , H01L29/1095 , H01L29/66734
摘要： In an embodiment of the present invention, after trenches, a gate oxide film and gate electrodes are formed, a channel layer is formed by plural high-acceleration ion implantations where acceleration voltages are different with one another. The channel layer is an impurity implanted layer on which diffusion by a heat treatment is not performed. The channel layer is allowed to have its impurity concentration substantially uniform in a depth-wise direction of the trenches, by implanting ions of the impurity at plural different times by use of a high-acceleration ion implantation system. Since a second region having almost no influence on a characteristic of the channel layer can be reduced, the channel layer having a minimum necessary depth can be obtained. The trenches are thus made shallow, and accordingly a capacitance can be reduced. Furthermore, an on resistance can be made lower by making an epitaxial layer thinner.
摘要翻译：在本发明的实施例中，在沟槽之后，形成栅氧化膜和栅电极，通过加速电压彼此不同的多个高加速度离子注入形成沟道层。沟道层是不进行通过热处理的扩散的杂质注入层。通过使用高加速度离子注入系统，在多个不同时间通过注入杂质的离子，允许沟道层在沟槽的深度方向上具有基本均匀的杂质浓度。由于可以减少对沟道层的特性几乎没有影响的第二区域，所以可以获得具有最小所需深度的沟道层。因此，沟槽变浅，因此可以减小电容。此外，通过使外延层更薄，可以使导通电阻更低。

37. 发明申请

US20070007588A1 Insulated gate semiconductor device, protection circuit and their manufacturing method 审中-公开
标题翻译：绝缘栅半导体器件，保护电路及其制造方法
公开(公告)号：US20070007588A1
公开(公告)日：2007-01-11
申请号：US11471733
申请日：2006-06-21
申请人： Hiroyasu Ishida , Tadao Mandai , Atsuya Ushida , Hiroaki Saito
发明人： Hiroyasu Ishida , Tadao Mandai , Atsuya Ushida , Hiroaki Saito
IPC分类号： H01L29/94 , H01L21/336
CPC分类号： H01L29/7813 , H01L29/0696 , H01L29/086 , H01L29/66734
摘要： A first electrode layer, which comes into contact with a source region, and a second electrode layer, which comes into contact with a body (back gate) region, are provided. The first and second electrode layers are insulated from each other and are extended in a direction different from an extending direction of a trench. It is possible to individually apply potentials to the first and second electrode layers, and to perform control for preventing a reverse current caused by a parasitic diode. Therefore, a bidirectional switching element can be realized by use of one MOSFET.
摘要翻译：设置与源极区域接触的第一电极层和与主体（背栅极）区域接触的第二电极层。第一和第二电极层彼此绝缘并且沿与沟槽的延伸方向不同的方向延伸。可以分别对第一和第二电极层施加电位，并且执行用于防止由寄生二极管引起的反向电流的控制。因此，可以通过使用一个MOSFET来实现双向开关元件。

38. 发明申请

US20050133814A1 Semiconductor device 有权
标题翻译：半导体器件
公开(公告)号：US20050133814A1
公开(公告)日：2005-06-23
申请号：US10958640
申请日：2004-10-06
申请人： Tetsuya Yoshida , Tetsuya Okada , Hiroaki Saito , Shigeyuki Murai , Kikuo Okada
发明人： Tetsuya Yoshida , Tetsuya Okada , Hiroaki Saito , Shigeyuki Murai , Kikuo Okada
IPC分类号： H01L29/70 , H01L29/06 , H01L29/73 , H01L29/739 , H01L29/78 , H01L29/80 , H01L29/423
CPC分类号： H01L29/7397 , H01L29/0619
摘要： In a conventional semiconductor device, there was a problem that, in a guard ring region, a shape of a depletion layer is distorted and stable withstand voltage characteristics cannot be obtained. In a semiconductor device of the present invention, a thermal oxide film in an actual operation region and a thermal oxide film in a guard ring region are formed in the same process. Thereafter, the thermal oxide film is once removed and is formed again. Thus, a film thickness of the thermal oxide film on the upper surface of the guard ring region is set to, for example, about 8000 to 10000 Å. Accordingly, a CVD oxide film including moving ions is formed in a position distant from a surface of an epitaxial layer. Consequently, distortion of a depletion layer, which is influenced by the moving ions, is suppressed and desired withstand voltage characteristics can be maintained.
摘要翻译：在传统的半导体器件中，存在在保护环区域中耗尽层的形状变形而不能得到稳定的耐电压特性的问题。在本发明的半导体装置中，以相同的工序形成实际工作区域中的热氧化膜和防护环区域的热氧化膜。此后，热氧化膜被一次除去并再次形成。因此，保护环区域的上表面上的热氧化膜的膜厚设定为例如约8000〜10000。因此，包含移动离子的CVD氧化膜形成在远离外延层的表面的位置。因此，受到移动离子影响的耗尽层的失真被抑制，并且可以保持期望的耐受电压特性。

39. 发明授权

US07622837B2 Hydrodynamic bearing device and spindle motor having the bearing device, and recording and/or reproducing apparatus using the spindle motor 失效
标题翻译：具有轴承装置的流体动力轴承装置和主轴电机，以及使用主轴电机的记录和/或再现装置
公开(公告)号：US07622837B2
公开(公告)日：2009-11-24
申请号：US11407060
申请日：2006-04-20
申请人： Hiroaki Saito , Takeyoshi Yamamoto , Takao Yoshitsugu
发明人： Hiroaki Saito , Takeyoshi Yamamoto , Takao Yoshitsugu
IPC分类号： H02K5/16
CPC分类号： F16C33/107 , F16C17/107 , H02K5/1675 , H02K7/085
摘要： A set of radial dynamic pressure generating grooves constitute a radial bearing, and an entire width (L) of the radial dynamic pressure generating groove is reduced. A set of thrust dynamic pressure generating grooves constituting a thrust bearing are formed so that an area where a maximal thrust dynamic pressure is generated (diameter) is increased, and a bearing angle stiffness of the thrust bearing is increased. The thrust bearing having the high bearing angle stiffness shares a moment load applied to a shaft to thereby compensate for a bearing angle stiffness of the radial bearing whose bearing stiffness is small because an entire width of the radial bearing is small. Thus, a thin-shaped hydrodynamic bearing capable of withstanding a large moment load is obtained.
摘要翻译：一组径向动压产生槽构成径向轴承，并且径向动压产生槽的整个宽度（L）减小。形成构成推力轴承的一组推力动压生成槽，使得产生最大推力动压（直径）的区域增加，并且推力轴承的轴承角刚度增加。具有高轴承角刚度的推力轴承共享施加到轴的力矩载荷，从而补偿径向轴承的轴承刚度，其轴承刚度较小，因为径向轴承的整个宽度较小。因此，获得能够承受大的力矩载荷的薄型流体动力轴承。

40. 发明申请

US20090107445A1 Recoil Starter 有权
标题翻译： Recoil起动机
公开(公告)号：US20090107445A1
公开(公告)日：2009-04-30
申请号：US12249223
申请日：2008-10-10
申请人： Shigemitsu Chigira , Tetsuya Kasamatsu , Kenta Shofuda , Hiroaki Saito , Yuki Hoshi
发明人： Shigemitsu Chigira , Tetsuya Kasamatsu , Kenta Shofuda , Hiroaki Saito , Yuki Hoshi
IPC分类号： F02N3/02
CPC分类号： F02N3/02 , F02N15/022 , Y10T74/13
摘要： According to an aspect of the present invention, there is provided a recoil starter including: a base plate that has a bearing portion formed therein; a rotary shaft that is supported by the bearing portion so as to pass through the base plate; a rope reel that is rotatably supported at one side of the base plate; a recoil rope that is wound around the rope reel; a recoil spiral spring that urges the rope reel to rewind the recoil rope; a damper spring that has one end connected to the rotary shaft and the other end connected to the rope reel; and a clutch mechanism that is disposed on an end of the rotary shaft at the other side of the base plate and that transfer a rotational force to an engine.
摘要翻译：根据本发明的一个方面，提供了一种反冲起动器，包括：底板，其中形成有轴承部分; 旋转轴，其由所述轴承部支撑以穿过所述基板; 可旋转地支撑在基板的一侧的绳卷轴; 缠绕在绳卷轴上的反冲绳; 促使绳卷筒重绕反冲绳的反冲螺旋弹簧; 阻尼器弹簧，其一端连接到旋转轴，另一端连接到绳索卷轴; 以及离合器机构，其设置在所述基板的另一侧的所述旋转轴的端部，并且将旋转力传递到发动机。

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