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。

公开(公告)号：US08810095B2

公开(公告)日：2014-08-19

申请号：US13198776

申请日：2011-08-05

申请人： Junya Mizukami ,  Takayuki Oe ,  Yoichi Sekii ,  Naoki Sabashi ,  Hideki Nishimura ,  Takehito Tamaoka ,  Takashi Yamamoto

发明人： Junya Mizukami ,  Takayuki Oe ,  Yoichi Sekii ,  Naoki Sabashi ,  Hideki Nishimura ,  Takehito Tamaoka ,  Takashi Yamamoto

IPC分类号： H02K5/167 ,  F16C17/10 ,  H02K7/08 ,  G11B33/14 ,  G11B19/20

CPC分类号： H02K7/085 ,  F16C17/105 ,  F16C17/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  G11B33/1473

摘要： A dynamic pressure bearing is defined in a first gap between a shaft portion and a sleeve portion. An upper seal portion extending upward and a lower seal portion extending downward are arranged radially outward of the dynamic pressure bearing. Each of the upper seal portion and the lower seal portion includes a surface including a lubricating oil located therein. The upper seal portion and the lower seal portion are arranged in communication with each other through a communicating hole defined in the sleeve portion. The communicating hole and a space ranging from the upper seal portion to the lower seal portion through the first gap are filled with the lubricating oil. The axial distance between the surfaces of the lubricating oil in the upper seal portion and the lower seal portion is arranged to be shorter than the axial distance between an upper end and a lower end of the dynamic pressure bearing.

摘要翻译： 在轴部和套筒部之间的第一间隙中限定动态压力轴承。 向上延伸的上密封部分和向下延伸的下密封部分布置在动压轴承的径向外侧。 上密封部分和下密封部分中的每一个包括其中包括润滑油的表面。 上密封部分和下密封部分通过限定在套筒部分中的连通孔彼此连通。 连通孔和通过第一间隙从上密封部到下密封部的空间填充有润滑油。 上密封部中的润滑油的表面与下部密封部之间的轴向距离比动压轴承的上端和下端的轴向距离短。

公开(公告)号：US08259408B2

公开(公告)日：2012-09-04

申请号：US13033778

申请日：2011-02-24

申请人： Takehito Tamaoka ,  Hiroyuki Abe

发明人： Takehito Tamaoka ,  Hiroyuki Abe

IPC分类号： G11B19/20

CPC分类号： H02K5/24 ,  G11B19/2018 ,  H02K3/18 ,  H02K21/22 ,  H02K2213/03

摘要： A spindle motor for use in a 2.5 inch 7 mm high disk drive apparatus includes a base portion; a stator arranged above the base portion; a rotor hub including a cover portion positioned above the stator, and a side wall portion arranged to extend downward from an outer edge of the cover portion; a rotor magnet positioned radially outward of the stator, and fixed to an inner circumferential surface of the side wall portion of the rotor hub; and a bearing mechanism arranged to support the rotor hub and the rotor magnet such that the rotor hub and the rotor magnet are rotatable with respect to the base portion and the stator. A height of the rotor magnet as measured in an axial direction is preferably in a range of about 2 mm to about 3 mm (both inclusive), and a height of a stator core of the stator as measured in the axial direction is preferably in a range of about 50% to about 75% (both inclusive) of the height of the rotor magnet. A torque constant of a torque produced between the stator and the rotor magnet is in a range of about 3 mNm/A to about 5 mNm/A (both inclusive).

摘要翻译： 用于2.5英寸7毫米高磁盘驱动装置的主轴电机包括：基座部分; 定子，其布置在所述基部上方; 转子毂，其包括定位在定子上方的盖部分，以及设置成从盖部分的外边缘向下延伸的侧壁部分; 定子的径向外侧的转子磁体，固定在转子毂的侧壁部的内周面上; 以及轴承机构，其布置成支撑转子毂和转子磁体，使得转子毂和转子磁体可相对于基座部分和定子旋转。 在轴向上测量的转子磁体的高度优选在大约2mm至大约3mm（包括两端）的范围内，并且沿轴向测量的定子的定子芯的高度优选为 范围为转子磁体的高度的约50％至约75％（包括）。 在定子和转子磁体之间产生的扭矩的转矩常数在约3mNm / A至约5mNm / A（包括端面）的范围内。

公开(公告)号：US20090154008A1

公开(公告)日：2009-06-18

申请号：US12389450

申请日：2009-02-20

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 ,  H02K1/185 ,  H02K3/522 ,  H02K21/16

摘要： Using a simple and inexpensive method, a reliable spindle motor having a simple and inexpensive structure is afforded, in which contact failure of the FPC does not occur even when the motor undergoes external impact. An extending portion is provided radially outer side of an annular recess of a base. The extending portion has a step whose radially outer side is higher, and a through hole formed such as to pass through the base from its inside to outside. A FPC is disposed on an upper surface of a stator. The FPC is fixed to a lower surface of the base through the through hole. The bending height and the bending angle of the FPC are minimized by providing the step having appropriate height so that the FPC is not easily peeled off even when subject to external impact.

摘要翻译： 使用简单且廉价的方法，提供了具有简单且便宜的结构的可靠的主轴电机，其中即使当电动机经受外部冲击时也不会发生FPC的接触故障。 在基部的环形凹部的径向外侧设置有延伸部。 延伸部分具有径向外侧较高的台阶，以及形成为从内向外穿过底座的通孔。 FPC定位在上表面上。 FPC通过通孔固定在基座的下表面。 通过提供具有适当高度的台阶使FPC的弯曲高度和弯曲角度最小化，使得FPC即使经受外部冲击也不容易剥离。

公开(公告)号：US07514830B2

公开(公告)日：2009-04-07

申请号：US11163680

申请日：2005-10-27

申请人： Takehito Tamaoka

发明人： Takehito Tamaoka

IPC分类号： H02K5/12

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：US07511398B2

公开(公告)日：2009-03-31

申请号：US11307502

申请日：2006-02-10

申请人： Takehito Tamaoka

发明人： Takehito Tamaoka

IPC分类号： H02K1/12 ,  H02K1/14

CPC分类号： H02K1/146 ,  G11B25/043 ,  H02K1/185 ,  H02K3/18 ,  H02K21/14

摘要： A base plate is provided with plural through holes extending vertically through the base plate, at the portions aligned with plural teeth. In the respective through holes of the base plate, the lower portions of wire-wound portions of the corresponding teeth and the lower portions of the coils formed around the wire-wound portions are inserted. The lower surfaces of the wire-wound portions are positioned between the upper main surface and the lower main surface of the base plate in the axial direction.

摘要翻译： 基板在与多个齿对准的部分处设置有沿着基板垂直延伸的多个通孔。 在基板的相应通孔中插入相应齿的绕线部分的下部和围绕线缠绕部分形成的线圈的下部。 绕线部分的下表面沿轴向位于基板的上主表面和下主表面之间。

公开(公告)号：US07474502B2

公开(公告)日：2009-01-06

申请号：US11456918

申请日：2006-07-12

申请人： Takehito Tamaoka ,  Shingo Suginobu

发明人： Takehito Tamaoka ,  Shingo Suginobu

IPC分类号： G11B17/02

CPC分类号： G11B17/0281 ,  G11B17/0287

摘要： A rotor hub for use in a motor installed into a recording disk driving device to spin a recording disk includes a convex portion, a disk placing portion around the convex portion, and the relief portion which is a substantially circular concave portion disposed between the convex portion and the disk placing portion. The recording disk, preferably a 1.8-inch or smaller type disk, having a center circular through-hole, is mounted on the rotor hub. When the recording disk is mounted on the rotor hub, with the bottom surface thereof abutting against a portion of the disk placing portion and an inner side surface of the center circular through-hole of the recording disk, an upper edge of the relief portion is arranged axially lower than an upper edge of the inner side surface of the center circular through-hole, and a bottom edge of the relief portion is arranged inward from an inner edge of the bottom surface of the recording disk.

摘要翻译： 一种用于安装在记录盘驱动装置中以旋转记录盘的电动机中的电动机的转子轮毂包括凸部，围绕凸部的盘放置部以及设置在凸部之间的大致圆形的凹部的浮雕部 和盘放置部。 具有中心圆形通孔的记录盘，优选为1.8英寸或更小的盘，安装在转子毂上。 当记录盘安装在转子轮毂上时，其底表面抵靠盘片放置部分的一部分和记录盘的中心圆形通孔的内侧表面，该释放部分的上边缘是 布置成比中心圆形通孔的内侧表面的上边缘轴向地低，并且所述浮雕部分的底边缘从记录盘的底表面的内边缘向内布置。

公开(公告)号：US20070007841A1

公开(公告)日：2007-01-11

申请号：US11428843

申请日：2006-07-06

申请人： Takehito Tamaoka

发明人： Takehito Tamaoka

IPC分类号： H02K7/00 ,  H02K5/16 ,  H02K21/12

CPC分类号： F16C17/107 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2018 ,  H02K5/1675 ,  H02K7/085 ,  H02K21/16 ,  H02K21/222

摘要： Motor having a rotor magnet, a stator and a bearing mechanism with vibrations and noises suppressed. The greatest common divisor of the number of the magnetic poles of the rotor magnet and the number of the teeth of the stator is larger than the number of drive phases for the stator. Further, the number of the radial dynamic pressure generation grooves or the thrust dynamic pressure generation grooves coincides with none of the divisors and multiples of the number of the magnetic poles of the rotor magnet and the number of the teeth of the stator.

摘要翻译： 具有转子磁体，定子和轴承机构的电机具有振动和噪声。 转子磁体的磁极数量和定子齿数的最大公约数大于定子的驱动相位数。 此外，径向动压产生槽或推力动压产生槽的数量与转子磁体的磁极数量和定子的数量的除数和倍数不一致。

公开(公告)号：US20060268453A1

公开(公告)日：2006-11-30

申请号：US11420013

申请日：2006-05-24

申请人： Tsuchitsugu Watanabe ,  Takehito Tamaoka

发明人： Tsuchitsugu Watanabe ,  Takehito Tamaoka

IPC分类号： G11B17/02

CPC分类号： G11B25/043 ,  G11B19/2009

摘要： A spindle motor includes an electroconductive sheet member. The electroconductive sheet member is attached so as to be abutted against a sleeve housing and a metal exposed portion of a base plate. With the configuration, the conductivity between the base plate and the sleeve housing is preferably achieved.

摘要翻译： 主轴电机包括导电片部件。 导电片构件被安装成与基板的套筒壳体和金属暴露部分抵接。 通过该构造，优选地实现基板和套筒壳体之间的导电性。