公开(公告)号：US20090174272A1

公开(公告)日：2009-07-09

申请号：US12142828

申请日：2008-06-20

申请人： Tomohiro YONEDA ,  Keita HAMAKAWA ,  Takayuki IWASE ,  Hiromasa FUJII ,  Takehito Tamaoka

发明人： Tomohiro YONEDA ,  Keita HAMAKAWA ,  Takayuki IWASE ,  Hiromasa FUJII ,  Takehito Tamaoka

IPC分类号： H02K21/22

CPC分类号： G11B19/2009 ,  H02K5/163 ,  H02K7/085 ,  H02K7/09

摘要： A thrust yoke is fixed into a second recessed portion of a base with adhesive. The second recessed portion has a first surface to be in contact with the bottom surface of the thrust yoke, and a second surface axially opposing the bottom surface of the thrust yoke with a gap therebetween. The thrust yoke has a bent portion at its radial end. The bent portion is bent downward. The thrust yoke also has a protruding portion extending downward from the bent portion. The protruding portion axially opposes the second surface of the second recessed portion of the base with a gap therebetween.

摘要翻译： 推力轭用粘合剂固定到基座的第二凹部中。 第二凹部具有与推力轭的底面接触的第一表面和与推力轭的底面轴向相对的第二表面，其间具有间隙。 推力轭在其径向端部具有弯曲部分。 弯曲部分向下弯曲。 推力轭也具有从弯曲部向下方延伸的突出部。 突出部分沿轴向与基座的第二凹部的第二表面相对并且间隔开间隙。

公开(公告)号：US20080278850A1

公开(公告)日：2008-11-13

申请号：US11965924

申请日：2007-12-28

申请人： Tomohiro YONEDA ,  Keita HAMAKAWA ,  Takayuki IWASE

发明人： Tomohiro YONEDA ,  Keita HAMAKAWA ,  Takayuki IWASE

IPC分类号： F16C32/06 ,  G11B17/02 ,  H02K7/08

CPC分类号： G11B19/2036 ,  F16C17/107 ,  F16C33/107 ,  F16C33/74 ,  F16C41/008 ,  F16C2300/34 ,  F16C2370/12

摘要： When a sleeve of a fluid dynamic bearing is manufactured, its inner peripheral surface is formed by cutting. On the inner peripheral surface, first and second inclined surfaces are formed by a first cutting process such that a distance between the sleeve and a central axis is increased toward an upper end surface of the sleeve. Then, an upper bearing surface and a third inclined surface between the upper bearing surface and the first inclined surface are formed on the inner peripheral surface of the sleeve by a second cutting process of accuracy higher than that of the first cutting process. In the second cutting process, it is possible to form accurately in position a boundary between the upper bearing surface and the third inclined surface in contact with an upper end of an upper dynamic pressure groove provided on the upper bearing surface.

摘要翻译： 当制造流体动力轴承的套筒时，其内周表面通过切割形成。 在内周表面上，第一和第二倾斜表面通过第一切割工艺形成，使得套筒和中心轴线之间的距离朝向套筒的上端表面增加。 然后，通过比第一切削加工精度高的第二切削加工，在上轴承面和第一倾斜面之间的上轴承面和第三倾斜面形成在套筒的内周面上。 在第二切削加工中，可以在与上轴承面上设置的上动压槽的上端部接触的上支承面与第三倾斜面之间的边界准确地形成位置。

公开(公告)号：US20120162818A1

公开(公告)日：2012-06-28

申请号：US13334620

申请日：2011-12-22

申请人： Takatoki SUGI ,  Tomohiro YONEDA ,  Hiroshi KOBAYASHI

发明人： Takatoki SUGI ,  Tomohiro YONEDA ,  Hiroshi KOBAYASHI

IPC分类号： G11B33/14 ,  H02K5/167 ,  G11B17/028

CPC分类号： G11B33/08 ,  F16C17/105 ,  F16C33/74 ,  F16C33/743 ,  F16C35/02 ,  F16C41/008 ,  F16C2226/12 ,  F16C2226/40 ,  F16C2370/12 ,  G11B19/2009 ,  H02K5/04 ,  H02K5/16 ,  H02K5/1677 ,  H02K15/14

摘要： A spindle motor includes a shaft arranged to extend in an axial direction, and a base portion arranged to define a portion of a housing, and including a through hole in which the shaft is inserted. A fixing region is defined between an inner circumferential portion of the base portion and a lower portion of the shaft. The fixing region includes a press-fitting region and an adhesion region defined on a lower side of the press-fitting region and in which a seal gap is defined between the inner circumferential portion of the base portion and the lower portion of the shaft. The seal gap is arranged to gradually decrease in radial width with increasing height. The seal gap is arranged to include an adhesive arranged therein over an entire circumference thereof.

摘要翻译： 主轴电动机包括沿轴向方向延伸的轴和布置成限定壳体的一部分的基部，并且包括其中插入轴的通孔。 固定区域限定在基部的内周部分和轴的下部之间。 固定区域包括压配区域和限定在压配合区域的下侧的粘合区域，并且在基部的内周部分和轴的下部之间限定有密封间隙。 密封间隙布置成随着高度的增加而径向宽度逐渐减小。 密封间隙布置成包括在其整个圆周上布置在其中的粘合剂。

公开(公告)号：US20120075746A1

公开(公告)日：2012-03-29

申请号：US13239497

申请日：2011-09-22

申请人： Tomohiro YONEDA ,  Takatoki SUGI ,  Hiroshi KOBAYASHI

发明人： Tomohiro YONEDA ,  Takatoki SUGI ,  Hiroshi KOBAYASHI

IPC分类号： G11B17/34 ,  H02K11/00

CPC分类号： H02K3/522 ,  G11B19/2009 ,  H02K2203/03

摘要： A base unit for use in a storage disk drive apparatus includes a base portion; a stator core including a plurality of teeth; U-phase, V-phase, and W-phase coils; U-phase, V-phase, and W-phase common wires; and a circuit board. The U-phase, V-phase, and W-phase coils are wound on the teeth and arranged to define a U phase, a V phase, and a W phase, respectively. The U-phase, V-phase, and W-phase common wires are arranged to define the U phase, the V phase, and the W phase, respectively. Each of the U-phase, V-phase, and W-phase common wires is arranged to pass through a separate one of through holes to be drawn out beyond a lower surface of the base portion and electrically connected to the circuit board. Each of the through holes is sealed with a sealant such that the base unit is airtight.

摘要翻译： 用于存储盘驱动装置的基本单元包括基部; 定子铁心，包括多个齿; U相，V相和W相线圈; U相，V相和W相共用线; 和电路板。 U相，V相和W相线圈被缠绕在齿上并且被布置成分别限定U相，V相和W相。 U相，V相和W相共用布线分别定义U相，V相和W相。 U相，V相和W相公共线中的每一个布置成穿过单独的一个通孔，以便超出基部的下表面被拉出并电连接到电路板。 每个通孔用密封剂密封，使得基座单元是气密的。