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公开(公告)号：US07582996B2
公开(公告)日：2009-09-01
申请号：US10544782
申请日：2004-02-24
CPC分类号： F16C33/107 , F16C17/10 , F16C33/74 , F16C2370/12 , G11B19/2018 , H02K7/085
摘要： A magnet (13) for trapping abraded powder is disposed in a connecting passage between an opening of a sleeve and an opening of a hydrodynamic bearing motor, and a shaft (3), a sleeve (4), a thrust flange (7), and a thrust main plate (5) are made of an austenitic stainless. With this configuration, since the austenitic stainless acting as a nonmagnetic substance is used, it is possible to increase a degree of cleaning. Further, abraded powder of the austenitic stainless is transformed into a magnetic substance, and thus a flow of the abraded powder to the outside can be prevented by providing the magnet for trapping abraded powder in the connecting passage between an opening of a bearing and the outside of the motor.
摘要翻译： 用于捕集磨损的粉末的磁体（13）设置在套筒的开口和流体动力轴承电动机的开口之间的连接通道中，以及轴（3），套筒（4），推力凸缘（7）， 推力主板（5）由奥氏体不锈钢制成。 利用这种结构，由于使用了作为非磁性物质的奥氏体不锈钢，所以可以提高清洁度。 此外，将奥氏体不锈钢的磨损粉末转变成磁性物质，因此可以通过在轴承的开口和外部的连接通道中设置用于将磨损的粉末捕获的磁体，从而防止磨损的粉末向外部的流动 的电机。
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公开(公告)号：US07294946B2
公开(公告)日：2007-11-13
申请号：US10543907
申请日：2004-02-24
CPC分类号： H02K7/085 , F16C17/107 , F16C33/1015 , F16C2370/12
摘要： A dynamic pressure gas bearing motor in which a radial dynamic pressure gas bearing and a thrust dynamic pressure gas bearing are ensured to have sufficient length and diameter even though the clamping screw holes for introducing screws to reliably hold a disk are formed in the top wall of the motor rotation body. The top surface of the support shaft (2) has a downward recession, the motor rotation body (3) has a protruded part (3) facing the recession (2a) of the support shaft and fitted therein with clearance, a radial dynamic pressure gas bearing (6) is formed by the inner periphery of the motor rotation body and the outer periphery of the support shaft, a thrust dynamic pressure gas bearing (7) is formed by the protruded part of the motor rotation body and the recession of the support shaft, the thrust dynamic pressure gas bearing is provided below the top end of the radial dynamic pressure gas bearing, and clam screw holes (3c) for holding a disk are formed in the top wall of the motor rotation body above the recession of the support shaft.
摘要翻译： 即使用于引入螺钉以可靠地保持盘的夹紧螺钉孔也形成在径向动压气体轴承和推力动压气体轴承中以具有足够的长度和直径的动压气体轴承马达， 电机旋转体。 支撑轴（2）的上表面具有向下的凹陷，马达旋转体（3）具有面向支撑轴的凹部（2a）的突出部分（3），并且在其间装有间隙，径向动压 气体轴承（6）由电动机旋转体的内周和支撑轴的外周形成，推力动压气体轴承（7）由电动机旋转体的突出部和 支撑轴，推力动压气体轴承设置在径向动态气体轴承的顶端下方，用于保持盘的蛤蜊螺孔（3c）形成在电动机旋转体的顶壁上方， 支撑轴。
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公开(公告)号：US06911753B2
公开(公告)日：2005-06-28
申请号：US10797032
申请日：2004-03-11
CPC分类号： H02K7/085 , F16C17/107 , F16C33/1015 , F16C2370/12 , H02K5/1675
摘要： A gas dynamic bearing motor is provided that is capable of setting a bearing radius to a large value to obtain a sufficient radial stiffness, and preventing lock of the bearing and scattering of wear powder outside the bearing. An annular groove 11 is provided on a lower end surface 87 of a hub 3 to thereby enable a deformation of an inner circumferential surface 82 of the hub 3 when recording disks 9 are loaded on the hub 3 to be suppressed to a small value, thereby enabling partial contact in the radial bearing to be suppressed and lock of the bearing to be prevented. Further, a protrusion 12 is provided on a base 7 in a circumferential direction and fitted in the annular groove 11 to construct a labyrinth seal, thereby enabling scattering of wear powder generated on bearing surfaces outside the bearing to be prevented.
摘要翻译： 提供一种能够将轴承半径设定为大值以获得足够径向刚度并防止轴承锁定和轴承外部的磨损粉末散射的气动轴承电动机。 在轮毂3的下端面87上设置有环状的槽11，从而能够将记录盘9装载在轮毂3上时能够使轮毂3的内周面82发生变形，抑制到较小的值 能够抑制径向轴承中的部分接触并防止轴承的锁定。 此外，突起12在圆周方向上设置在基座7上并嵌合在环状槽11中，构成迷宫式密封，从而能够在轴承外侧产生的磨损粉末的散射被防止。
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公开(公告)号：US20080211334A1
公开(公告)日：2008-09-04
申请号：US12111030
申请日：2008-04-28
申请人： Yasunori TOKUNO , Yoshitada Higuchi
发明人： Yasunori TOKUNO , Yoshitada Higuchi
IPC分类号： H02K7/08
CPC分类号： F16C17/10 , F16C17/045 , F16C33/107 , F16C33/74 , F16C2370/12 , G11B19/2009
摘要： A spindle motor comprises a fixed shaft member, a sleeve, and an annular chucking portion. The fixed shaft member has an annular collar protruding outward from and substantially perpendicular to the outer peripheral surface of said fixed shaft member, and also has a thrust flange provided a specific distance away from said annular collar. The sleeve component is monolithic with a hub component The annular chucking portion is formed to include a surface along an axial direction outside said thrust flange in a diameter direction of said thrust flange. The annular chucking portion is disposed at a position in an axial direction that includes a vertical position of a surface to which said disk is attached.
摘要翻译： 主轴电动机包括固定轴构件，套筒和环形夹紧部分。 固定轴构件具有从所述固定轴构件的外周面向外突出并且基本上垂直于所述固定轴构件的外周表面的环形套环，并且还具有与所述环形套环相距特定距离的推力凸缘。 套筒部件与轮毂部件是整体的。环形夹紧部分形成为包括在所述推力凸缘的直径方向上沿着轴向方向在所述推力凸缘外侧的表面。 环形夹持部设置在包括所述盘所附接的表面的垂直位置的轴向方向上。
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公开(公告)号：US20060170297A1
公开(公告)日：2006-08-03
申请号：US10543907
申请日：2004-02-24
CPC分类号： H02K7/085 , F16C17/107 , F16C33/1015 , F16C2370/12
摘要： A dynamic pressure gas bearing motor in which a radial dynamic pressure gas bearing and a thrust dynamic pressure gas bearing are ensured to have sufficient length and diameter even though the clamping screw holes for introducing screws to reliably hold a disk are formed in the top wall of the motor rotation body. The top surface of the support shaft (2) has a downward recession, the motor rotation body (3) has a protruded part (3) facing the recession (2a) of the support shaft and fitted therein with clearance, a radial dynamic pressure gas bearing (6) is formed by the inner periphery of the motor rotation body and the outer periphery of the support shaft, a thrust dynamic pressure gas bearing (7) is formed by the protruded part of the motor rotation body and the recession of the support shaft, the thrust dynamic pressure gas bearing is provided below the top end of the radial dynamic pressure gas bearing, and clam screw holes (3c) for holding a disk are formed in the top wall of the motor rotation body above the recession of the support shaft.
摘要翻译： 即使用于引入螺钉以可靠地保持盘的夹紧螺钉孔也形成在径向动压气体轴承和推力动压气体轴承中以具有足够的长度和直径的动压气体轴承马达， 电机旋转体。 支撑轴（2）的上表面具有向下的凹陷，马达旋转体（3）具有面向支撑轴的凹部（2a）的突出部分（3），并且在其间装有间隙，径向动压 气体轴承（6）由电动机旋转体的内周和支撑轴的外周形成，推力动压气体轴承（7）由电动机旋转体的突出部和 支撑轴，推力动压气体轴承设置在径向动态气体轴承的顶端下方，用于保持盘的蛤蜊螺孔（3c）形成在电动机旋转体的顶壁上方， 支撑轴。
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公开(公告)号：US20060138887A1
公开(公告)日：2006-06-29
申请号：US10544782
申请日：2004-02-24
CPC分类号： F16C33/107 , F16C17/10 , F16C33/74 , F16C2370/12 , G11B19/2018 , H02K7/085
摘要： A magnet (13) for trapping abraded powder is disposed in a connecting passage between an opening of a sleeve and an opening of a hydrodynamic bearing motor, and a shaft (3), a sleeve (4), a thrust flange (7), and a thrust main plate (5) are made of an austenitic stainless. With this configuration, since the austenitic stainless acting as a nonmagnetic substance is used, it is possible to increase a degree of cleaning. Further, abraded powder of the austenitic stainless is transformed into a magnetic substance, and thus a flow of the abraded powder to the outside can be prevented by providing the magnet for trapping abraded powder in the connecting passage between an opening of a bearing and the outside of the motor.
摘要翻译： 用于捕集磨损的粉末的磁体（13）设置在套筒的开口和流体动力轴承电动机的开口之间的连接通道中，以及轴（3），套筒（4），推力凸缘（7）， 推力主板（5）由奥氏体不锈钢制成。 利用这种结构，由于使用了作为非磁性物质的奥氏体不锈钢，所以可以提高清洁度。 此外，将奥氏体不锈钢的磨损粉末转变成磁性物质，因此可以通过在轴承的开口和外部的连接通道中设置用于将磨损的粉末捕获的磁体，从而防止磨损的粉末向外部的流动 的电机。
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7.发明授权Hydrodynamic bearing device, spindle motor and disc recording and reproducing apparatus 失效流体动力轴承装置，主轴电机和盘片记录和再现装置公开(公告)号：US07645073B2
公开(公告)日：2010-01-12
申请号：US11236830
申请日：2005-09-28
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/107 , F16C2370/12
摘要： A hydrodynamic bearing device which realizes power saving, reduction of a time period necessary for stabilizing rotation, and enhancement in durability to startup and halting of the motor at the same time by accelerating circulation of a lubricant in the vicinity of a flange with torque loss being kept low is provided. A flange (3) is fixed to one end of a shaft (2). On an inner surface of one of openings of a sleeve (1), a step portion (1C) is provided. When the shaft (2) is inserted into the sleeve (1), the flange (3) is in close vicinity to the step portion (1C). An inner diameter of the step portion (1C) is smaller in end portions in an axial direction than in a central portion. Thus, a gap between an outer surface (3C) of the flange (3) and a surface of the step portion (1C) which opposes the outer surface (3C) is narrow in the vicinity of boundaries of the outer surface (3C) of the flange (3) than in the vicinity the central portion.
摘要翻译： 一种流体动力轴承装置，其通过在扭矩损失的情况下加速法兰附近的润滑剂循环，同时实现节电，减少旋转稳定所需的时间段，并且提高马达启动和停止的耐久性 保持低水平。 凸缘（3）固定在轴（2）的一端。 在套筒（1）的一个开口的内表面上设有台阶部（1C）。 当轴（2）插入到套筒（1）中时，凸缘（3）紧邻台阶部分（1C）。 阶梯部（1C）的内径在轴向的端部比中央部小。 因此，凸缘（3）的外表面（3C）与台阶部分（1C）的与外表面（3C）相对的表面之间的间隙在外表面（3C）的边界附近 凸缘（3）比中心部分附近。
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8.发明授权Hard disk drive device, and fluid dynamic bearing spindle motor and assembling method thereof 失效硬盘驱动装置和流体动力轴承主轴电动机及其组装方法公开(公告)号：US07365940B2
公开(公告)日：2008-04-29
申请号：US11167126
申请日：2005-06-28
CPC分类号： G11B33/121 , F16C17/107 , F16C33/1015 , F16C2370/12 , G11B19/2018 , G11B25/043
摘要： A hydrodynamic bearing for a hard disk drive device is disclosed. An oil is filled in a clearance between an inner surface of the hub and an outer surface of the shaft, whereby a hydrodynamic radial bearing is formed between the inner periphery of the hub and the outer periphery of the shaft, and a hydrodynamic thrust bearing is formed between the top face of the shaft and the thrust plate. Between an outer peripheral part at the base end of the shaft and an inner peripheral part at the open end of the hub is formed a seal part in which a larger clearance is formed between the shaft and the hub than a clearance in the hydrodynamic radial bearing and in which the oil surface is positioned. An oil surface adjusting hole and a plug for sealing the hole are provided in the case opposite the seal part.
摘要翻译： 公开了一种用于硬盘驱动装置的流体动力轴承。 油被填充在毂的内表面和轴的外表面之间的间隙中，由此在轮毂的内周和轴的外周之间形成流体动力学径向轴承，并且流体动力推力轴承是 形成在轴的顶面和止推板之间。 在轴的基端部的外周部和轮毂的开口端的内周部之间形成有密封部，在该密封部中，在轴和轮毂之间形成比在流体动力学径向轴承中的间隙更大的间隙 并且其中油表面被定位。 在与密封部相对的壳体中设置油面调整孔和密封孔的塞子。
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公开(公告)号：US20060192452A1
公开(公告)日：2006-08-31
申请号：US11176265
申请日：2005-07-08
申请人： Yasunori Tokuno , Yoshitada Higuchi
发明人： Yasunori Tokuno , Yoshitada Higuchi
CPC分类号： G11B19/2009 , F16C17/107 , F16C33/107 , F16C33/74 , F16C2370/12 , H02K5/1677
摘要： Object: A spindle motor of the type in which both ends of a shaft are fixed has a structure in which both ends of a hydrodynamic bearing are open to the atmosphere, and when the rotational precision of rotating bodies is poor, the bearing is subjected to a great deal of fluctuating stress, and leakage of the lubricant occurs. Means for Solution: In a spindle motor having a fluid bearing in which a narrow gap is formed between the surface of a fixed shaft member and a sleeve component (rotating member), and this gap is filled with a lubricating fluid, the shaft member has an annular collar formed so as to protrude substantially perpendicularly to the cylindrical surface of the shaft member. The rotating member is such that the sleeve component fitted over the shaft member is constituted integrally with a hub component that fixes a magnetic disk, and an annular seal member is fixed to the upper end side of the shaft member.
摘要翻译： 对象：轴的两端固定的主轴电机具有其中流体动力轴承的两端向大气开放的结构，并且当旋转体的旋转精度差时，轴承受 发生大量的波动应力，并发生润滑剂泄漏。 解决方案：在具有在固定轴构件的表面和套筒部件（旋转构件）之间形成有窄间隙的流体轴承的主轴电动机中，并且该间隙填充有润滑流体，轴构件具有 环形套环形成为基本上垂直于轴构件的圆柱形表面突出。 旋转构件使得安装在轴构件上的套筒部件与固定磁盘的毂部件一体地构成，并且环形密封构件固定到轴构件的上端侧。
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10.发明申请Hydrodynamic bearing device, spindle motor and disc recording and reproducing apparatus 失效流体动力轴承装置，主轴电机和盘片记录和再现装置公开(公告)号：US20060067595A1
公开(公告)日：2006-03-30
申请号：US11236830
申请日：2005-09-28
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/107 , F16C2370/12
摘要： A hydrodynamic bearing device which realizes power saving, reduction of a time period necessary for stabilizing rotation, and enhancement in durability to startup and halting of the motor at the same time by accelerating circulation of a lubricant in the vicinity of a flange with loss torque being kept low is provided. A flange (3) is fixed to one end of a shaft (2). On an inner surface of one of openings of a sleeve (1), a step portion (1C) is provided. When the shaft (2) is inserted into the sleeve (1), the flange (3) is in close vicinity to the step portion (1C). An inner diameter of the step portion (1C) is smaller in end portions in an axial direction than in a central portion. Thus, a gap between an outer surface (3C) of the flange (3) and a surface of the step portion (1C) which opposes the outer surface (3C) is narrow in the vicinity of boundaries of the outer surface (3C) of the flange (3) than in the vicinity the central portion.
摘要翻译： 一种流体动力轴承装置，其通过以损失扭矩加速法兰附近的润滑剂的循环，同时实现节电，减少旋转稳定所需的时间段，并且提高马达启动和停止的耐久性 保持低水平。 凸缘（3）固定在轴（2）的一端。 在套筒（1）的一个开口的内表面上设有台阶部（1C）。 当轴（2）插入到套筒（1）中时，凸缘（3）靠近台阶部分（1C）。 台阶部（1C）的内径在轴向的端部比中央部小。 因此，凸缘（3）的外表面（3C）与与外表面（3C）相对的台阶部分（1C）的表面之间的间隙在外表面的边界附近 3C）比中心部分附近。
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