公开(公告)号：US20060221495A1

公开(公告)日：2006-10-05

申请号：US11307815

申请日：2006-02-24

申请人： Takehito Tamaoka ,  Hiroomi Ogawa

发明人： Takehito Tamaoka ,  Hiroomi Ogawa

IPC分类号： G11B17/02

CPC分类号： G11B19/2009 ,  H02K7/085

摘要： In a motor of a motor unit, a base plate includes a raised portion protruding from a surrounding portion on a side of the stator portion opposite to a rotor portion. A raised face of the raised portion is perpendicular to a central axis and is formed in an annular shape around the central axis. The raised face of the raised portion protrudes lower than a lower surface of a sticker member stuck around the raised portion to thereby close a hole portion formed around the raised portion.

摘要翻译： 在马达单元的马达中，基板包括从定子部分的与转子部分相对的一侧的周围部分突出的凸起部分。 凸起部分的隆起面垂直于中心轴线并围绕中心轴线形成环形。 凸起部的隆起面比粘贴在凸起部附近的贴贴构件的下表面下方突出，从而封闭形成在凸起部周围的孔部。

公开(公告)号：US20060103248A1

公开(公告)日：2006-05-18

申请号：US11163680

申请日：2005-10-27

申请人： Takehito Tamaoka

发明人： Takehito Tamaoka

IPC分类号： H02K7/00 ,  H02K5/10

CPC分类号： G11B19/2009 ,  H02K1/146 ,  H02K5/10 ,  H02K11/01

摘要： A spindle motor in one inventive implementation includes a rotor hub (10) for retaining a rotor magnet (70) and a stator (80) which is faced to the radial inner side of the rotor magnet (70) with a gap interposed therebetween. A shield sheet (90) is placed between the upper side of the winding (82) of the stator (80) and the disk mounting portion (13) of the rotor hub (10) and the outer peripheral edge of the shield sheet (90) is placed radially inside of the outer peripheral edge of the core back (83) of the stator (80).

摘要翻译： 在一个本发明实施例中的主轴电机包括用于保持转子磁体（70）的转子轮毂（10）和与转子磁体（70）的径向内侧相对置的定子（80）。 在定子（80）的绕组（82）的上侧和转子毂（10）的盘安装部（13）和屏蔽片（90）的外周边缘之间放置有屏蔽片（90） ）放置在定子（80）的芯背（83）的外周边缘的内侧。

公开(公告)号：US20060082247A1

公开(公告)日：2006-04-20

申请号：US11163479

申请日：2005-10-20

申请人： Takehito Tamaoka ,  Kazushi Miura

发明人： Takehito Tamaoka ,  Kazushi Miura

IPC分类号： H02K11/00 ,  H02K5/10 ,  H02K1/22

CPC分类号： H02K11/01 ,  H02K7/14 ,  H02K21/16

摘要： A spindle motor according to an embodiment of the invention includes a rotor hub formed of a ferromagnetic material and a rotor magnet held by the rotor hub. The rotor hub has a flange having a shield surface that faces an upper end surface of the rotor magnet via a clearance in the axial direction and formed of a ferromagnetic material. On the outside in the radial direction of an outer peripheral surface of the rotor magnet in the flange, a rim projected downward from the shield surface of the flange is formed.

摘要翻译： 根据本发明的实施例的主轴电机包括由铁磁材料形成的转子毂和由转子毂保持的转子磁体。 转子毂具有一个凸缘，该凸缘具有一个屏蔽表面，该屏蔽表面经由轴向上的间隙面对转子磁体的上端表面并由铁磁材料形成。 在凸缘中的转子磁体的外周面的径向外侧形成有从凸缘的屏蔽面向下突出的边缘。

公开(公告)号：US07021829B2

公开(公告)日：2006-04-04

申请号：US10710583

申请日：2004-07-22

申请人： Takehito Tamaoka

发明人： Takehito Tamaoka

IPC分类号： F16C17/10

CPC分类号： F16C17/107 ,  F16C33/107 ,  F16C43/02 ,  F16C2240/40 ,  F16C2370/12 ,  G11B19/2018 ,  H02K5/1675 ,  Y10T29/49639

摘要： Fluid-dynamic-pressure bearing furnished with a shaft, a top plate fixed to an upper portion of the shaft, a thrust plate fixed to a lower portion of the shaft, a sleeve, and a cuplike bearing housing that along its inner periphery retains the sleeve. A lubricating-fluid-filled continuous micro-gap is formed in between the shaft and the sleeve and the top plate and the sleeve. Radial bearing sections are formed in between the shaft cylindrical outer surface and the sleeve cylindrical inner surface. An upper thrust bearing section is formed in between the undersurface of the top plate and the top-edge face of the bearing housing. A lower thrust bearing section formed in between the bottom margin of the sleeve and the top margin of the thrust plate. The bearing sections are each provided with dynamic-pressure-generating grooves for inducing dynamic pressure in the lubricating fluid when the shaft or sleeve spins.

摘要翻译： 装有轴的流体动压轴承，固定到轴的上部的顶板，固定到轴的下部的推力板，套筒和沿其内周保持的杯状轴承壳体 袖。 在轴和套筒之间以及顶板和套筒之间形成润滑流体填充的连续微间隙。 径向轴承部分形成在轴圆柱形外表面和套筒圆柱形内表面之间。 上推力轴承部分形成在顶板的下表面和轴承壳体的顶边面之间。 下推力轴承部分形成在套筒的底部边缘和止推板的上边缘之间。 轴承部分都设置有动力产生槽，用于当轴或套筒旋转时在润滑流体中引起动态压力。

公开(公告)号：US07005768B2

公开(公告)日：2006-02-28

申请号：US10705241

申请日：2003-11-12

申请人： Takehito Tamaoka ,  Tetsuya Kurimura ,  Ryouichi Nakajima

发明人： Takehito Tamaoka ,  Tetsuya Kurimura ,  Ryouichi Nakajima

IPC分类号： H02K5/12 ,  G11B17/02

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。

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。

公开(公告)号：US20050274018A1

公开(公告)日：2005-12-15

申请号：US10908191

申请日：2005-05-02

申请人： Masato Gomyo ,  Takehito Tamaoka

发明人： Masato Gomyo ,  Takehito Tamaoka

IPC分类号： F16C32/06 ,  F16C33/10 ,  F16C33/74 ,  G11B19/20 ,  H02K1/00 ,  H02K5/167 ,  H02K7/08

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。

公开(公告)号：US20050025405A1

公开(公告)日：2005-02-03

申请号：US10710583

申请日：2004-07-22

申请人： Takehito Tamaoka

发明人： Takehito Tamaoka

IPC分类号： F16C17/10 ,  F16C17/02 ,  F16C17/04 ,  F16C33/10 ,  F16C43/02 ,  G11B19/20 ,  H02K5/16 ,  H02K7/08 ,  F16C32/06

CPC分类号： F16C17/107 ,  F16C33/107 ,  F16C43/02 ,  F16C2240/40 ,  F16C2370/12 ,  G11B19/2018 ,  H02K5/1675 ,  Y10T29/49639

摘要： Fluid-dynamic-pressure bearing furnished with a shaft, a top plate fixed to an upper portion of the shaft, a thrust plate fixed to a lower portion of the shaft, a sleeve, and a cuplike bearing housing that along its inner periphery retains the sleeve. A lubricating-fluid-filled continuous micro-gap is formed in between the shaft and the sleeve and the top plate and the sleeve. Radial bearing sections are formed in between the shaft cylindrical outer surface and the sleeve cylindrical inner surface. An upper thrust bearing section is formed in between the undersurface of the top plate and the top-edge face of the bearing housing. A lower thrust bearing section formed in between the bottom margin of the sleeve and the top margin of the thrust plate. The bearing sections are each provided with dynamic-pressure-generating grooves for inducing dynamic pressure in the lubricating fluid when the shaft or sleeve spins.

摘要翻译： 装有轴的流体动压轴承，固定到轴的上部的顶板，固定到轴的下部的推力板，套筒和沿其内周保持的杯状轴承壳体 袖。 在轴和套筒之间以及顶板和套筒之间形成润滑流体填充的连续微间隙。 径向轴承部分形成在轴圆柱形外表面和套筒圆柱形内表面之间。 上推力轴承部分形成在顶板的下表面和轴承壳体的顶边面之间。 下推力轴承部分形成在套筒的底部边缘和止推板的上边缘之间。 轴承部分都设置有动力产生槽，用于当轴或套筒旋转时在润滑流体中引起动态压力。