公开(公告)号：US07862238B2

公开(公告)日：2011-01-04

申请号：US11730144

申请日：2007-03-29

申请人： Takafumi Asada ,  Hiroaki Saito ,  Daisuke Itou ,  Keigo Kusaka ,  Hiroyuki Kiriyama

发明人： Takafumi Asada ,  Hiroaki Saito ,  Daisuke Itou ,  Keigo Kusaka ,  Hiroyuki Kiriyama

IPC分类号： F16C32/06 ,  F16C17/10

CPC分类号： F16C33/102 ,  F16C17/107 ,  F16C33/107 ,  F16C2370/12

摘要： A hydrodynamic bearing rotary device which can reduce rotation friction, and recording and reproducing apparatus including the same is provided. In the hydrodynamic bearing rotary device, such as hard disc devices, a rotary shaft having a hub on one end is provided in a bearing of a sleeve so as to be rotatable. Thrust hydrodynamic grooves are provided on the other end surface of the rotary shaft, to form a thrust bearing with the thrust plate. A communication path is provided in the sleeve. The second gap between the hub and the sleeve end surface is used as a flow channel and is connected to the communication path. In this way, the rotation friction torque of the thrust bearing can be made sufficiently small, and internal pressure in bonded portions of the rotary shaft or the bottom plate can be suppressed. Thus, the oil can be prevented from oozing out from a small space of the bonded surfaces. Furthermore, the hydrodynamic bearing can be made thin. These effects can be combined to realize an optimal hydrodynamic bearing rotary device.

摘要翻译： 提供一种可以降低旋转摩擦力的流体动力轴承旋转装置，以及包括其的记录和再现装置。 在诸如硬盘装置的流体动力轴承旋转装置中，一个具有一端的轮毂的旋转轴设置在套筒的轴承中以便可旋转。 在旋转轴的另一端面上设置有推力液压动力槽，与止推板形成推力轴承。 在套筒中提供通信路径。 轮毂和套筒端面之间的第二间隙用作流动通道并连接到连通路径。 以这种方式，推力轴承的旋转摩擦转矩可以变得足够小，并且可以抑制旋转轴或底板的接合部分的内部压力。 因此，可以防止油从接合表面的小空间渗出。 此外，流体动力轴承可以变薄。 这些效果可以结合起来，实现最佳的流体动力轴承旋转装置。

公开(公告)号：US07830637B2

公开(公告)日：2010-11-09

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

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。

公开(公告)号：US07740407B2

公开(公告)日：2010-06-22

申请号：US11785186

申请日：2007-04-16

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： F16C33/107 ,  F16C17/107 ,  F16C2370/12

摘要： To prevent air from being trapped inside a bearing and causing the bearing to have oil film rupture and NRRO to deteriorate. In a hydrodynamic bearing, a first lubricant reservoir is provided in a gap between a lower surface of a hub and a sleeve, and a second lubricant reservoir is provided in a gap between an outer peripheral surface of the sleeve and an inner peripheral surface of the hub or an inner peripheral surface of a stopper member fixed to the hub. If air enters inside such a hydrodynamic bearing, the air has to be discharged. For this purpose, the relationship in widths of the radial bearing gap, the maximum gap of the first lubricant reservoir under the lower surface of the hub and the maximum gap of the second lubricant reservoir on the sleeve outer peripheral surface, or the relationship in magnitudes of capillary forces thereof is adjusted. The principle that air tends to move toward the portion having smaller capillary pressure is utilized to make it difficult for the air to be trapped inside the bearing and to smoothly discharge the air from a gas-liquid interface of the second lubricant reservoir.

摘要翻译： 为了防止空气被夹在轴承内部并导致轴承有油膜破裂和NRRO劣化。 在流体动力轴承中，第一润滑剂储存器设置在毂的下表面和套筒之间的间隙中，并且第二润滑剂储存器设置在套筒的外周表面和套筒的外周表面之间的间隙中 轮毂或固定到轮毂的止动件的内周面。 如果空气进入这种流体动力轴承内，则空气必须排出。 为此，径向轴承间隙的宽度关系，轮毂下表面下的第一润滑剂储存器的最大间隙和套筒外周表面上的第二润滑油储存器的最大间隙，或其关系 的毛细管力被调节。 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部并且平滑地从第二润滑剂储存器的气 - 液界面排出空气。

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。

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。

公开(公告)号：US20090048445A1

公开(公告)日：2009-02-19

申请号：US11991799

申请日：2006-10-16

申请人： Toru Takabatake ,  Hiroaki Saito ,  Yusuke Sumiyoshi

发明人： Toru Takabatake ,  Hiroaki Saito ,  Yusuke Sumiyoshi

IPC分类号： C07D241/36 ,  C07D271/12

CPC分类号： C07D241/52

摘要： There is disclosed a method of synthesizing a quinoxaline derivative in which toxicity, corrosiveness and permeation are low and which is excellent in safety and which attains a reduced reaction time, a greatly improved yield and excellent economical efficiency. The object is achieved by a method of synthesizing a quinoxaline derivative which comprises adsorbing a benzofuroxan derivative and a β-diketone derivative on a solid support, and then heating the derivatives in a solid state by microwave irradiation to dehydrocyclize them.

摘要翻译： 公开了一种合成喹喔啉衍生物的方法，其中毒性，腐蚀性和渗透性低，安全性优异，反应时间缩短，产率大幅提高，经济效益优良。 该目的通过合成喹喔啉衍生物的方法来实现，该方法包括将苯并呋喃衍生物和β-二酮衍生物吸附在固体支持物上，然后通过微波辐射加热固体衍生物以使其脱氢环化。

公开(公告)号：US07413954B2

公开(公告)日：2008-08-19

申请号：US11230538

申请日：2005-09-21

申请人： Hirotoshi Kubo ,  Junichiro Tojo ,  Hiroaki Saito ,  Masahito Onda ,  Satoshi Iwata ,  Masamichi Yanagida

发明人： Hirotoshi Kubo ,  Junichiro Tojo ,  Hiroaki Saito ,  Masahito Onda ,  Satoshi Iwata ,  Masamichi Yanagida

IPC分类号： H01L21/336

CPC分类号： H01L29/7813 ,  H01L29/42368 ,  H01L29/66734

摘要： A capacity layer is formed of non-doped polysilicon. Unlike capacity layers formed of an oxide film, generation of seams and the like can be suppressed and thereby a stable capacity layer can be formed. Moreover, polysilicon used as a capacity layer may be doped polysilicon, and an oxide film formed on the surface of the polysilicon also serves as a capacity film. Thus, provision of an insulated gate device featuring low capacity is made possible.

摘要翻译： 电容层由非掺杂多晶硅形成。 与由氧化膜形成的容量层不同，可以抑制接缝等的产生，从而可以形成稳定的电容层。 此外，用作电容层的多晶硅可以是掺杂多晶硅，并且形成在多晶硅表面上的氧化膜也用作容量膜。 因此，提供具有低容量的绝缘栅极器件成为可能。

公开(公告)号：US20080008408A1

公开(公告)日：2008-01-10

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： F16C17/10

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 15, a shaft is inserted into a bearing hole 1C of a sleeve 1 so as to be relatively rotatable. A value of a function (Nd) represented by the following relational expression (1) is set to be 100,000 or higher: Nd=η/(S·Ff·P·D)  (1) S: Material wear rate S=74800 (constant) η: Absolute viscosity at 70° C. [N·S/mˆ2] (when the lubricating fluid is a liquid) I: Viscosity corresponding constant I=0.00001 (when the lubricating fluid is a gas) P: Load applied to one bearing [N]D: Shaft diameter [m], the floating rotation corresponding function, Ff, is defined as follows: Ff=P/(Fs×ω)  (2) ω: Constant angular velocity of the rotary device [rad/S] (=2·π·f/60), and the stiffness corresponding function, Fs, is defined as follows: Fs=(η·ω·Dˆ2·Lˆ2)/Cˆ3[N/m]  (3) L: Length of bearing [m]C: Bearing gap [m].

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15中，将轴插入到套筒1的轴承孔1C中以相对旋转。 由以下关系式（1）表示的函数（Nd）的值设定为100,000以上：<？in-line-formula description =“In-line Formulas”end =“lead”？> Nd = eta /(S.Ff.PD）（1）<？in-line-formula description =“In-line Formulas”end =“tail”？> S：材料磨损率S = 74800（常数）eta：70时的绝对粘度 °C（NS / m2）（润滑液为液体时）I：粘度对应常数I = 0.00001（当润滑液为气体时）P：施加在一个轴承上的载荷[N] D：轴直径[m ]，浮动旋转对应函数Ff定义如下：<？in-line-formula description =“In-line Formulas”end =“lead”？> Ff = P /（Fsxomega）（2）<？in -line-formula description =“直线公式”end =“tail”？> omega：旋转装置的恒定角速度[rad / S]（= 2.pi.f / 60）和刚度对应函数， Fs定义如下：<？in-line-formula description =“In-line Formulas”end =“lead”？> Fs =（eta.omega.D2.L2）/ C3 [N / m]（3） <？in-l ine-formula description =“In-line Formulas”end =“tail”？> L：轴承长度[m] C：轴承间隙[m]。

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。

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。