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公开(公告)号：US07556433B2
公开(公告)日：2009-07-07
申请号：US11347563
申请日：2006-02-06
CPC分类号： G11B19/2018 , F16C17/028 , F16C17/107 , F16C33/103 , F16C33/107 , F16C33/1075 , F16C2370/12 , H02K7/085 , Y10T29/49659
摘要： A fluid dynamic bearing device is mainly composed of a housing, a bearing sleeve, and a rotary member. The housing is formed by a side portion formed through injection molding of a resin material, and a bottom member fixed to a fixing portion provided in the inner periphery at one axial end of the side portion and adapted to close an opening at one axial end of the side portion. The fixing portion is a molding surface formed through solidification, in conformity with the inner surface of the mold, of the resin injected by the injection molding.
摘要翻译： 流体动力轴承装置主要由壳体，轴承套筒和旋转构件构成。 壳体由通过树脂材料的注射成型形成的侧部形成，以及底部构件，其固定到设置在侧部的一个轴向端部处的内周中的固定部分，并且适于将一个开口封闭在一个轴向端部 侧面部分。 固定部是通过注射成型注入的树脂与模具的内表面固化而形成的成型面。
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公开(公告)号：US20060188187A1
公开(公告)日：2006-08-24
申请号：US11347563
申请日：2006-02-06
IPC分类号： F16C32/06
CPC分类号： G11B19/2018 , F16C17/028 , F16C17/107 , F16C33/103 , F16C33/107 , F16C33/1075 , F16C2370/12 , H02K7/085 , Y10T29/49659
摘要： A fluid dynamic bearing device is mainly composed of a housing, a bearing sleeve, and a rotary member. The housing is formed by a side portion formed through injection molding of a resin material, and a bottom member fixed to a fixing portion provided in the inner periphery at one axial end of the side portion and adapted to close an opening at one axial end of the side portion. The fixing portion is a molding surface formed through solidification, in conformity with the inner surface of the mold, of the resin injected by the injection molding.
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3.发明授权公开(公告)号：US07005768B2
公开(公告)日：2006-02-28
申请号：US10705241
申请日：2003-11-12
CPC分类号： F16C33/107 , F16C17/107 , F16C17/26 , F16C33/104 , F16C33/74 , F16C2370/12 , G11B19/2009
摘要： A securing surface of a housing comprises a deformation region, which deforms radially outward by a predetermined quantity during press fitting of a thrust member, and another region. The deformation region has a tapered shape that gradually reduces in diameter in the downward direction, and is receded radially inward relative to the other region of the securing surface, by an amount equivalent to the amount of outward deformation thereof during press fitting. When the thrust member is press fitted into the inner periphery of a press fitting portion of the housing, the securing surface of the housing becomes substantially straight along entire axial region L thereof.
摘要翻译： 壳体的固定表面包括变形区域，其在推压构件的压配合期间和另一区域的径向向外变形预定量。 变形区域具有在向下方向上直径逐渐减小的锥形形状，并且相对于固定面的其他区域径向向内退出与压配合期间的向外变形量相当的量。 当将推力构件压配合到壳体的压配合部分的内周中时，壳体的固定表面沿其整个轴向区域L基本上是直的。
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公开(公告)号：US20060008191A1
公开(公告)日：2006-01-12
申请号：US11169504
申请日：2005-06-28
申请人： Takehito Tamaoka , Tetsuya Kurimura , Huyuki Ito
发明人： Takehito Tamaoka , Tetsuya Kurimura , Huyuki Ito
IPC分类号： F16C32/06
CPC分类号： G11B19/2018 , F16C17/107 , F16C33/107 , F16C33/12 , F16C2370/12 , H02K5/1675
摘要： A dynamic bearing device includes: a housing; a bearing sleeve arranged inside the housing; a shaft member rotating relative to the housing and the bearing sleeve; and a radial bearing portion supporting the shaft member radially in a non-contact manner by a dynamic pressure action of a lubricant generated in a radial bearing clearance. The housing is formed of a leadless brass whose Sn content is regulated to 0.01 wt % or less.
摘要翻译： 动态轴承装置包括：壳体; 布置在所述壳体内的轴承套筒; 轴构件相对于所述壳体和所述轴承套筒旋转; 以及径向轴承部分，通过在径向轴承间隙中产生的润滑剂的动态压力作用以非接触的方式径向地支撑轴件。 壳体由无铅黄铜形成，其Sn含量调节至0.01重量％以下。
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公开(公告)号：US08760799B2
公开(公告)日：2014-06-24
申请号：US13492956
申请日：2012-06-11
IPC分类号： G11B17/02
CPC分类号： G11B19/2045 , G11B17/0282
摘要： A rotor hub includes a shaft connecting portion arranged to be connected to a shaft serving as a central axis, a disk loading portion centered about the central axis and arranged to support a disk shaped storage medium mounted thereon, a yoke arranged below the disk loading portion and supporting a field magnet at one of an inner side surface thereof and an outer side surface thereof, and a flexible portion connecting the disk loading portion to the yoke and being flexible with respect to a force applied thereto from the yoke.
摘要翻译： 转子轮毂包括：轴连接部分，其被布置成连接到用作中心轴线的轴;盘装载部分，围绕中心轴线居中并且被布置成支撑安装在其上的盘形存储介质;轭架，其布置在盘装载部分下方 并且在其内侧表面和外侧表面中的一个支撑场磁体;以及柔性部分，其将盘装载部分连接到轭，并且相对于从轭提供的力而是柔性的。
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6.发明授权Spindle motor including hydrodynamic bearing and storage disk drive including same 有权主轴电动机包括流体动力轴承和包括其的存储盘驱动器公开(公告)号：US08520335B2
公开(公告)日：2013-08-27
申请号：US13198797
申请日：2011-08-05
申请人： Junya Mizukami , Takayuki Oe , Yoichi Sekii , Naoki Sabashi , Takehito Tamaoka , Takashi Yamamoto , Kazunori Usui , Akira Mukai
发明人： Junya Mizukami , Takayuki Oe , Yoichi Sekii , Naoki Sabashi , Takehito Tamaoka , Takashi Yamamoto , Kazunori Usui , Akira Mukai
CPC分类号： F16C17/107 , F16C33/745 , F16C2370/12 , H02K5/1677
摘要： In a motor, a stationary portion includes a shaft portion and an upper thrust portion arranged to define a single continuous monolithic member together with the shaft portion, and arranged to extend radially outward from an upper portion of the shaft portion. The shaft portion includes a female screw portion recessed axially downward from an upper end thereof. An upper end of the single continuous monolithic member defined by the shaft portion and the upper thrust portion includes an upper end annular surface arranged to extend radially outward from the female screw portion perpendicularly or substantially perpendicularly to the central axis. An outside diameter of the upper end annular surface is greater than a diameter of an outer circumferential surface of the shaft portion.
摘要翻译： 在电动机中，固定部分包括轴部分和上推力部分，所述上部推力部分布置成与所述轴部分一起限定单个连续的整体部件，并且被布置成从所述轴部分的上部径向向外延伸。 轴部包括从其上端轴向向下凹陷的阴螺纹部。 由所述轴部分和所述上推力部分限定的所述单个连续整体构件的上端包括上端环形表面，所述上端环形表面布置成垂直地或基本垂直于所述中心轴线从所述内螺纹部分径向向外延伸。 上端环状面的外径大于轴部的外周面的直径。
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7.发明授权Spindle motor including an electrically conductive adhesive and a non-conductive adhesive arranged between a base and a bearing unit 有权主轴电动机包括布置在基座和轴承单元之间的导电粘合剂和非导电粘合剂公开(公告)号：US08324776B2
公开(公告)日：2012-12-04
申请号：US12687217
申请日：2010-01-14
CPC分类号： H02K5/1675 , F16C17/107 , F16C35/02 , F16C2370/12 , G11B19/2009 , H02K15/14 , Y10T29/49009
摘要： A spindle motor includes a shaft arranged in an upward/downward direction along a central axis; a base member including a substantially cylindrical holder portion arranged around the central axis; a bearing unit arranged radially inward of the holder portion; and a rotating portion arranged above the base member to rotate about the central axis. The rotating portion preferably includes a mounting surface on which a disk is to be mounted. An adhesive containing an electrically conductive material and an adhesive containing an externally stimulated curing material and/or an anaerobic curing material are arranged in a clearance space defined between an inner circumferential surface of the holder portion and an outer circumferential surface of the bearing unit. The adhesive containing the electrically conductive material is arranged above the adhesive containing the externally stimulated curing material and/or the anaerobic curing material.
摘要翻译： 主轴电动机包括沿着中心轴线向上/向下方向布置的轴; 基部构件，包括围绕所述中心轴线布置的基本上圆柱形的保持器部分; 轴承单元，其布置在所述保持器部分的径向内侧; 以及设置在所述基座构件上方以围绕所述中心轴线旋转的旋转部分。 旋转部分优选地包括其上将安装有盘的安装表面。 包含导电材料的粘合剂和含有外部刺激的固化材料和/或厌氧固化材料的粘合剂布置在保持器部分的内周表面和轴承单元的外周表面之间的间隙空间中。 含有导电材料的粘合剂布置在含有外部刺激的固化材料和/或厌氧固化材料的粘合剂的上方。
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公开(公告)号：US08189290B2
公开(公告)日：2012-05-29
申请号：US12580319
申请日：2009-10-16
申请人： Yasuhiro Sakata , Yuya Saito , Takehito Tamaoka
发明人： Yasuhiro Sakata , Yuya Saito , Takehito Tamaoka
IPC分类号： G11B19/20
CPC分类号： G11B19/2009
摘要： A spindle motor includes a shaft arranged concentric with as a central axis and extending in a vertical direction, a rotor unit arranged to rotate about the central axis, a stator including a base member and a magnetic member fixed to the base member and axially opposed to the magnet. The magnetic member includes an opposing portion axially opposed to the magnet so that a magnetic attracting force is generated between the opposing portion and the magnet and a protrusion portion protruding downwards from the opposing portion. The base member includes a recess portion, and the protrusion portion of the magnetic member is fixed within the recess portion.
摘要翻译： 主轴电动机包括与中心轴同心地布置并沿垂直方向延伸的轴，转子单元布置成围绕中心轴线旋转，定子包括基部构件和固定到基座构件的轴向对置的定子， 磁铁。 磁性构件包括与磁体轴向相对的相对部分，使得在相对部分和磁体之间产生磁吸引力，以及从相对部分向下突出的突出部分。 基部构件包括凹部，并且磁性构件的突出部固定在凹部内。
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公开(公告)号：US07764000B2
公开(公告)日：2010-07-27
申请号：US11954850
申请日：2007-12-12
申请人： Takehito Tamaoka
发明人： Takehito Tamaoka
CPC分类号： H02K5/1675 , F16C17/107 , F16C33/10 , F16C2370/12 , G11B19/2036 , H02K15/02 , Y10T29/49012
摘要： A shaft, a circular plate portion and a cylindrical portion are integrally formed with one another through cutting operations to provide a rotor hub of a motor. An inner region on the lower surface of the circular plate portion is formed continuously with the outer peripheral surface of the shaft, and a hub thrust portion is provided in the inner portion so as to axially face a sleeve thrust portion on a sleeve main body. A stepped portion on the lower surface of the circular plate portion is disposed on the outer side of thrust dynamic pressure grooves on the sleeve thrust portion. In this manner, the stepped portion is disposed in a region where a thrust bearing portion is not provided, so that the hub thrust portion can be formed at a low cost in manufacturing the rotor hub by cutting.
摘要翻译： 轴，圆板部分和圆柱形部分通过切割操作彼此一体地形成，以提供电动机的转子轮毂。 在圆板部分的下表面上的内部区域与轴的外周面连续地形成，并且在内侧部分设置有轮毂推力部，从而轴向地面对套筒主体上的套筒推力部。 圆板部的下表面上的阶梯部设置在套筒推力部的推力动压槽的外侧。 以这种方式，台阶部分设置在没有设置推力轴承部分的区域中，从而通过切割制造转子轮毂可以以低成本形成轮毂止推部分。
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10.发明授权Methods of manufacturing fluid-dynamic-pressure bearing and spindle motor incorporating the bearing, and spindle motor and recording-disk drive incorporating the bearing 有权制造流体动压轴承和装有轴承的主轴电机的方法，以及包含轴承的主轴电机和记录盘驱动器公开(公告)号：US07650697B2
公开(公告)日：2010-01-26
申请号：US10908191
申请日：2005-05-02
申请人： Masato Gomyo , Takehito Tamaoka
发明人： Masato Gomyo , Takehito Tamaoka
CPC分类号： G11B19/2018 , F16C17/107 , F16C33/103 , F16C33/745 , F16C2202/60 , F16C2370/12 , H02K5/1675 , H02K5/1677 , H02K7/085 , H02K7/086 , Y10T29/49009 , Y10T29/49025 , Y10T29/49636 , Y10T29/49639 , Y10T29/49696 , Y10T29/49705
摘要： In spindle motors journaled on fluid-dynamic-pressure bearings, especially in such spindle motors employed in recording-disk drives in implementations that subject the drives to vibration and shock, sealing performance of a capillary seal formed between motor rotor-side and stator-side bearing surfaces, cohesiveness of oil-repellant on rotor-side/stator-side dry-area surfaces adjoining the capillary seal section, and motor inter-component adhesive strength are improved. The capillary-seal-constituting rotor-side/stator-side surface(s) are exposed to a plasma or to ultraviolet rays under predetermined conditions to improve the wettability of the surface(s) for the bearing fluid. The dry-area surface(s) are similarly irradiated so as to improve their wettability for the oil-repellant. Adhesively bonded component surfaces are likewise irradiated so as to improve their wettability for the adhesive, enhancing adhesive strength. Exposed surfaces may be constituted of a synthetic resin to enhance their wettability further, or may be made of metal, to yield a cleaning efficacy from the plasma/UV exposure.
摘要翻译： 在流体动压轴承中记录的主轴电机中，特别是在驱动器受振动和冲击的实施中用于记录磁盘驱动器的这种主轴电机中，形成在电动机转子侧和定子侧之间的毛细管密封件的密封性能 轴承表面，与毛细管密封部分相邻的转子侧/定子侧干燥区域表面上的防油剂的粘合性以及电动机部件间粘合强度提高。 毛细管密封构成的转子侧/定子侧表面在预定条件下暴露于等离子体或紫外线，以改善轴承流体表面的润湿性。 类似地照射干燥区域表面以改善其对拒油剂的润湿性。 粘合组分表面同样被照射，以提高其对粘合剂的润湿性，提高粘合强度。 露出的表面可以由合成树脂构成，以进一步增强其润湿性，或者可以由金属制成，从而产生从等离子体/ UV暴露的清洁效果。
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