公开(公告)号：US08508882B1

公开(公告)日：2013-08-13

申请号：US13568207

申请日：2012-08-07

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 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 to be rotatable. 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.

摘要翻译： 主轴电动机包括基部; 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以可旋转。 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）。

公开(公告)号：US09001459B2

公开(公告)日：2015-04-07

申请号：US13586100

申请日：2012-08-15

申请人： Hiroyuki Abe ,  Takehito Tamaoka ,  Kazuhiro Sato

发明人： Hiroyuki Abe ,  Takehito Tamaoka ,  Kazuhiro Sato

IPC分类号： G11B17/02 ,  H02K1/12 ,  H02K1/14 ,  H02K3/52 ,  H02K5/22

CPC分类号： G11B19/2009 ,  H02K1/146 ,  H02K1/187 ,  H02K3/522 ,  H02K5/225 ,  H02K2213/03

摘要： A stator includes a stator core and a plurality of coils. The stator core includes a core-back and a plurality of teeth portions. Each of the teeth portions includes a coil winding portion, a tip end portion, and an increased width portion. The tip end portion has a circumferential width larger than a smallest width of the coil winding portion. The increased width portion has a circumferential width larger than the smallest width of the coil winding portion. The increased width portion includes a slanted portion extending radially outward and upward. An axial position of a magnetic center of the rotor magnet positioned radially outward of the stator overlaps with an axially extending range of the tip end portion. A thickness of the slanted portion in a direction perpendicular to an upper surface of the slanted portion is smaller than an axial thickness of the coil winding portion.

摘要翻译： 定子包括定子芯和多个线圈。 定子铁芯包括芯背和多个齿部分。 每个齿部分包括线圈绕组部分，尖端部分和增加的宽度部分。 前端部的周向宽度大于线圈卷绕部的最小宽度。 增宽部的周向宽度大于线圈绕组部的最小宽度。 增加的宽度部分包括径向向外和向上延伸的倾斜部分。 位于定子径向外侧的转子磁体的磁心的轴向位置与前端部的轴向延伸范围重叠。 倾斜部分在与倾斜部分的上表面垂直的方向上的厚度小于线圈缠绕部分的轴向厚度。

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：US08760799B2

公开(公告)日：2014-06-24

申请号：US13492956

申请日：2012-06-11

申请人： Takuro Iguchi ,  Yoshihiro Sameshima ,  Takehito Tamaoka ,  Ryouji Sugiura

发明人： Takuro Iguchi ,  Yoshihiro Sameshima ,  Takehito Tamaoka ,  Ryouji Sugiura

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。

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

IPC分类号： G11B17/02 ,  H02K5/16

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。

公开(公告)号：US08324776B2

公开(公告)日：2012-12-04

申请号：US12687217

申请日：2010-01-14

申请人： Takehito Tamaoka ,  Tsuchitsugu Watanabe ,  Takashi Yamamoto

发明人： Takehito Tamaoka ,  Tsuchitsugu Watanabe ,  Takashi Yamamoto

IPC分类号： H02K5/167 ,  G11B19/20

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。

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。

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

IPC分类号： H02K5/16 ,  G11B17/02

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。

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

IPC分类号： B21D53/10 ,  B21K1/10 ,  B23P17/00 ,  H02K5/16 ,  F16C32/06 ,  F16C33/74

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：US07626305B2

公开(公告)日：2009-12-01

申请号：US11626453

申请日：2007-01-24

申请人： Takehito Tamaoka

发明人： Takehito Tamaoka

IPC分类号： H02K21/12 ,  H02K21/22 ,  G11B17/02

CPC分类号： H02K1/148 ,  H02K15/022 ,  Y10T29/49009

摘要： An armature core of an electric motor includes a core plate having a plurality of tooth portions arranged circumferentially about a center axis and extending in a radial direction, and a supporting ring portion supporting the plurality of the tooth portions along outer circumferential surfaces thereof. Each tooth portion includes a wire-wound portion on which a coil is arranged, a tip portion at a radially innermost portion of each tooth portion, and an inclined connecting portion connecting the tip portion and the wire-wound portion. The connecting portion has a width in a circumferential direction greater than a width of the wire-wound portion but smaller than a width of the tip portion.

摘要翻译： 电动机的电枢铁芯具有芯板，该芯板具有沿中心轴线周向配置并沿径向延伸的多个齿部，以及支撑环部，其沿着其外周面支承着上述多个齿部。 每个齿部包括配置有线圈的线缠绕部分，每个齿部的径向最内部的末端部分和连接尖端部分和绕线部分的倾斜连接部分。 连接部具有比绕线部的宽度大的圆周方向的宽度，但小于前端部的宽度。