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1. 发明申请

US20100085661A1 HYDRODYNAMIC BEARING DEVICE AND DISK ROTATION APPARATUS 失效
标题翻译：水力轴承装置和盘旋转装置
公开(公告)号：US20100085661A1
公开(公告)日：2010-04-08
申请号：US12412870
申请日：2009-03-27
申请人： Takafumi ASADA , Hiroaki Saito , Takao Yoshitsugu , Keigo Kusaka , Hiroyuki Kiriyama , Daisuke Ito
发明人： Takafumi ASADA , Hiroaki Saito , Takao Yoshitsugu , Keigo Kusaka , Hiroyuki Kiriyama , Daisuke Ito
IPC分类号： G11B17/02 , F16C32/06
CPC分类号： F16C17/107 , F16C33/103 , F16C33/107 , F16C2370/12
摘要： In a hydrodynamic bearing device in which a radial bearing face having a dynamic pressure generating groove on a shaft or an inner periphery of a sleeve is provided and a clearance between the shaft and the sleeve is filled with lubricant, an annular depression is provided on one end face of the sleeve adjacent to a rotor hub and a cover plate for covering the depression is attached to the sleeve so as to define a reservoir for the lubricant or air for the purpose of preventing such a risk that absence of an oil film occurs in clearances of a bearing of the hydrodynamic bearing device due to outflow of oil upon forcing of the oil by air received into the bearing. A step portion is provided on the other end face of the sleeve such that the step portion and the reservoir are communicated with each other by a communication hole. During operation of the hydrodynamic bearing device, air in the hydrodynamic bearing device reaches the reservoir via the communication hole so as to be discharged from the reservoir.
摘要翻译：在一种流体动力轴承装置中，其中设置有在轴上的动压产生槽或套筒的内周上的径向支承面，并且轴与套筒之间的间隙充满润滑剂，环形凹部设置在一个与转子轮毂相邻的套筒的端面和用于覆盖凹部的盖板附接到套筒上，以便限定用于润滑剂或空气的储存器，以便防止在油膜中不存在油膜的风险由于在接收到轴承中的空气迫使油被油流出时，流体动力轴承装置的轴承的间隙。台阶部设置在套筒的另一端面上，使得台阶部分和储存器通过连通孔相互连通。在流体动力轴承装置的操作期间，流体动力轴承装置中的空气经由连通孔到达储存器，以便从储存器排出。

2. 发明申请

US20070090716A1 Spindle motor, and recording and reproducing apparatus equipped with the same 失效
标题翻译：主轴电动机，以及配备有其的记录和再现装置
公开(公告)号：US20070090716A1
公开(公告)日：2007-04-26
申请号：US11524247
申请日：2006-09-21
申请人： Yoichi Oki , Masahiro Jyono , Takao Yoshitsugu
发明人： Yoichi Oki , Masahiro Jyono , Takao Yoshitsugu
IPC分类号： G11B17/02 , H02K1/00 , H02K1/12
CPC分类号： H02K1/148 , G11B19/2009
摘要： With a spindle motor 20, a stator core 8 comprises a plurality of salient pole components 51 that are formed in a radial shape, are wound with a stator coil 9, and are disposed at a uniform angle except for a non-equiangular pitch portion, an circular outer peripheral yoke 52 formed so as to be continuous with the outer peripheral side of the salient pole components 51, a cut-out 55 which is formed by cutting out part of the outer peripheral yoke 52 in an approximate sector-shape except in the non-equiangular pitch portion of the salient pole components 51, and a compensating pole plate 11 which is provided in the cut-out 55 along the ends on the inner peripheral side of the non-equiangular pitch portion where the salient pole components 51 are formed.
摘要翻译：在主轴电动机20中，定子铁芯8包括形成为径向形状的多个凸极部件51，卷绕有定子线圈9，并且除非非等距节距部分以均匀的角度配置，形成为与突极部件51的外周侧连续的圆形外周磁轭52，切除部55，其通过将外周磁轭52的一部分切除成大致扇形，除了突极部件51的非等角度节距部分和沿非极性节距部分的内周侧的端部设置在切口55中的补偿极板11，其中凸极部件51是形成。

3. 发明申请

US20070024136A1 Hydrodynamic bearing device, motor, and disk driving apparatus 失效
标题翻译：流体动力轴承装置，电动机和盘驱动装置
公开(公告)号：US20070024136A1
公开(公告)日：2007-02-01
申请号：US11443175
申请日：2006-05-31
申请人： Hiroaki Saito , Hiroyuki Kiriyama , Takao Yoshitsugu , Koji Hirata
发明人： Hiroaki Saito , Hiroyuki Kiriyama , Takao Yoshitsugu , Koji Hirata
IPC分类号： H02K5/16 , F16C32/06
CPC分类号： F16C17/102 , F16C17/107 , F16C33/107 , H02K7/086
摘要： To provide a hydrodynamic bearing device with high reliability, with which reductions in size, weight, and thickness can be achieved, as well as a motor and a disk driving apparatus that make use of this hydrodynamic bearing device. The hydrodynamic bearing device pertaining to the present invention comprises a shaft 10, a thrust flange 16, a sleeve 11, a seal plate 21, and a retaining plate 20. A radial dynamic pressure bearing is formed in the radial direction gap between the shaft 10 and the sleeve 11, and a thrust dynamic pressure bearing is formed in the thrust dynamic bearing gap between the sleeve 11 and the thrust flange 16. A communicating hole 11d is formed for communicating between the gap between the sleeve 11 and the seal plate 21 and the thrust direction gap between the sleeve 11 and the thrust flange 116. The radial dynamic pressure bearing and/or the thrust dynamic pressure bearing are formed such that a lubricating oil 9 circulates in the gap between the sleeve 11 and the seal plate 21 from the inner peripheral side of the sleeve 11 toward the outer peripheral side.
摘要翻译：提供具有高可靠性的流体动力轴承装置，其可以实现尺寸，重量和厚度的减小，以及利用该流体动力轴承装置的电动机和盘驱动装置。本发明的流体动力轴承装置包括轴10，推力凸缘16，套筒11，密封板21和保持板20。径向动压轴承形成在轴10和套筒11之间的径向间隙中，并且推力动压轴承形成在套筒11和推力凸缘16之间的推力动态轴承间隙中。形成连通孔11d用于在套筒11和密封板21之间的间隙以及套筒11和推力凸缘116之间的推力方向间隙之间连通。径向动压轴承和/或推力动压轴承形成为使得润滑油9从套筒11的内周侧向外周侧在套筒11和密封板21之间的间隙中循环。

4. 发明申请

US20060255675A1 Hydrodynamic bearing device and spindle motor having the bearing device, and recording and/or reproducing apparatus using the spindle motor 失效
公开(公告)号：US20060255675A1
公开(公告)日：2006-11-16
申请号：US11407060
申请日：2006-04-20
申请人： Hiroaki Saito , Takeyoshi Yamamoto , Takao Yoshitsugu
发明人： Hiroaki Saito , Takeyoshi Yamamoto , Takao Yoshitsugu
IPC分类号： H02K5/16 , H02K7/08
CPC分类号： F16C33/107 , F16C17/107 , H02K5/1675 , H02K7/085
摘要： A set of radial dynamic pressure generating grooves constitute a radial bearing, and an entire width (L) of the radial dynamic pressure generating groove is reduced. A set of thrust dynamic pressure generating grooves constituting a thrust bearing are formed so that an area where a maximal thrust dynamic pressure is generated (diameter) is increased, and a bearing angle stiffness of the thrust bearing is increased. The thrust bearing having the high bearing angle stiffness shares a moment load applied to a shaft to thereby compensate for a bearing angle stiffness of the radial bearing whose bearing stiffness is small because an entire width of the radial bearing is small. Thus, a thin-shaped hydrodynamic bearing capable of withstanding a large moment load is obtained.

5. 发明授权

US06717310B2 Spindle motor and method for assembling the same 失效
标题翻译：主轴电机及其组装方法
公开(公告)号：US06717310B2
公开(公告)日：2004-04-06
申请号：US10152820
申请日：2002-05-23
申请人： Shoichi Yoshikawa , Takao Yoshitsugu , Norimasa Takata
发明人： Shoichi Yoshikawa , Takao Yoshitsugu , Norimasa Takata
IPC分类号： H02K708
CPC分类号： F16C43/02 , F16C17/107 , F16C17/26 , F16C33/107 , F16C2370/12 , G11B19/2018 , H02K5/1675
摘要： A downsized spindle motor having a longer bearing service life and enhanced shock resistance includes a flange 11, which bears an axial load of a shaft 8, and which is fixed to an end of shaft 8. Laser welded section 14 is provided at the fixed section between shaft 8 and flange 11. Rotor hub 50 is fixed to another end of shaft 8, and laser welded section 54 firmly bonds the two elements.
摘要翻译：具有较长的轴承使用寿命和增强的抗冲击性的小型主轴电动机包括承载轴8的轴向载荷并且固定到轴8的端部的凸缘11.激光焊接部分14设置在固定部分轴8与凸缘11之间。转子毂50固定在轴8的另一端，激光焊接部分54牢固地结合两个元件。

6. 发明授权

US08013487B2 Hydrodynamic bearing device, and spindle motor and information apparatus equipped with same 有权
标题翻译：流体动力轴承装置，以及主轴电机和配备有其的信息装置
公开(公告)号：US08013487B2
公开(公告)日：2011-09-06
申请号：US12552632
申请日：2009-09-02
申请人： Koji Hirata , Keigo Kusaka , Takao Yoshitsugu , Yoshihito Watanabe , Hisaaki Yano
发明人： Koji Hirata , Keigo Kusaka , Takao Yoshitsugu , Yoshihito Watanabe , Hisaaki Yano
IPC分类号： H02K5/167 , F16C32/06
CPC分类号： F16C33/723 , F16C17/026 , F16C33/1085 , F16C33/745 , F16C2370/12
摘要： With a hydrodynamic bearing device 10, a first gap G1 is formed between a shaft 12 and a sleeve 11. A second gap G2 is formed between a sleeve cap 16 and the sleeve 11, and holds a lubricant 17. A thrust bearing member 21 is disposed near the inner peripheral surface of a center hole 16a of the sleeve cap 16. A third gap G3 is formed between the thrust bearing member 21 and the sleeve cap 16, and is open to the atmosphere. A fourth gap G4 is formed between the thrust bearing member 21 and the sleeve 11. The lubricant 17 circulates along a circulation passage that includes a communicating path 11b, the first gap G1 and the second gap G2.
摘要翻译：利用流体动力轴承装置10，在轴12和套筒11之间形成第一间隙G1。在套筒盖16和套筒11之间形成第二间隙G2，并且保持润滑剂17.止推轴承部件21是设置在套筒盖16的中心孔16a的内周面附近。第三间隙G3形成在推力轴承构件21和套筒盖16之间，并且向大气开放。第四间隙G4形成在推力轴承部件21和套筒11之间。润滑剂17沿着包括连通路径11b，第一间隙G1和第二间隙G2的循环通道循环。

7. 发明授权

US07589934B2 Hydrodynamic bearing device and disk rotating apparatus 失效
标题翻译：流体动力轴承装置和盘旋转装置
公开(公告)号：US07589934B2
公开(公告)日：2009-09-15
申请号：US12188545
申请日：2008-08-08
申请人： Takafumi Asada , Hiroaki Saito , Takao Yoshitsugu , Keigo Kusaka , Hiroyuki Kiriyama , Daisuke Ito
发明人： Takafumi Asada , Hiroaki Saito , Takao Yoshitsugu , Keigo Kusaka , Hiroyuki Kiriyama , Daisuke Ito
IPC分类号： G11B19/20
CPC分类号： F16C17/107 , F16C33/103 , F16C33/107 , F16C2370/12
摘要： In a hydrodynamic bearing device in which a radial bearing face having a dynamic pressure generating groove on a shaft or an inner periphery of a sleeve is provided and a clearance between the shaft and the sleeve is filled with lubricant, an annular depression is provided on one end face of the sleeve adjacent to a rotor hub and a cover plate for covering the depression is attached to the sleeve so as to define a reservoir for the lubricant or air for the purpose of preventing such a risk that absence of an oil film occurs in clearances of a bearing of the hydrodynamic bearing device due to outflow of oil upon forcing of the oil by air received into the bearing. A step portion is provided on the other end face of the sleeve such that the step portion and the reservoir are communicated with each other by a communication hole. During operation of the hydrodynamic bearing device, air in the hydrodynamic bearing device reaches the reservoir via the communication hole so as to be discharged from the reservoir.
摘要翻译：在一种流体动力轴承装置中，其中设置有在轴上的动压产生槽或套筒的内周上的径向支承面，并且轴与套筒之间的间隙充满润滑剂，环形凹部设置在一个与转子轮毂相邻的套筒的端面和用于覆盖凹部的盖板附接到套筒上，以便限定用于润滑剂或空气的储存器，以便防止在油膜中不存在油膜的风险由于在接收到轴承中的空气迫使油被油流出时，流体动力轴承装置的轴承的间隙。台阶部设置在套筒的另一端面上，使得台阶部分和储存器通过连通孔相互连通。在流体动力轴承装置的操作期间，流体动力轴承装置中的空气经由连通孔到达储存器，以便从储存器排出。

8. 发明授权

US07535134B2 Spindle motor, and recording and reproducing apparatus equipped with the same 失效
标题翻译：主轴电动机，以及配备有其的记录和再现装置
公开(公告)号：US07535134B2
公开(公告)日：2009-05-19
申请号：US11524247
申请日：2006-09-21
申请人： Yoichi Oki , Masahiro Jyono , Takao Yoshitsugu
发明人： Yoichi Oki , Masahiro Jyono , Takao Yoshitsugu
IPC分类号： H02K1/14 , H02K1/16 , G11B23/03 , G11B19/20
CPC分类号： H02K1/148 , G11B19/2009
摘要： With a spindle motor 20, a stator core 8 comprises a plurality of salient pole components 51 that are formed in a radial shape, are wound with a stator coil 9, and are disposed at a uniform angle except for a non-equiangular pitch portion, an circular outer peripheral yoke 52 formed so as to be continuous with the outer peripheral side of the salient pole components 51, a cut-out 55 which is formed by cutting out part of the outer peripheral yoke 52 in an approximate sector-shape except in the non-equiangular pitch portion of the salient pole components 51, and a compensating pole plate 11 which is provided in the cut-out 55 along the ends on the inner peripheral side of the non-equiangular pitch portion where the salient pole components 51 are formed.
摘要翻译：在主轴电动机20中，定子铁芯8包括形成为径向形状的多个凸极部件51，卷绕有定子线圈9，并且除非非等距节距部分以均匀的角度配置，形成为与突极部件51的外周侧连续的圆形外周磁轭52，切除部55，其通过将外周磁轭52的一部分切除成大致扇形，除了突极部件51的非等角度节距部分和沿非极性节距部分的内周侧的端部设置在切口55中的补偿极板11，其中凸极部件51是形成。

9. 发明授权

US07492548B2 Hydrodynamic bearing device and disk rotating apparatus 有权
公开(公告)号：US07492548B2
公开(公告)日：2009-02-17
申请号：US10554473
申请日：2004-04-13
申请人： Takafumi Asada , Hiroaki Saito , Takao Yoshitsugu , Keigo Kusaka , Hiroyuki Kiriyama , Daisuke Ito
发明人： Takafumi Asada , Hiroaki Saito , Takao Yoshitsugu , Keigo Kusaka , Hiroyuki Kiriyama , Daisuke Ito
IPC分类号： G11B17/02
CPC分类号： F16C17/107 , F16C33/103 , F16C33/107 , F16C2370/12
摘要： In a hydrodynamic bearing device in which a radial bearing face having a dynamic pressure generating groove on a shaft or an inner periphery of a sleeve is provided and a clearance between the shaft and the sleeve is filled with lubricant, an annular depression is provided on one end face of the sleeve adjacent to a rotor hub and a cover plate for covering the depression is attached to the sleeve so as to define a reservoir for the lubricant or air for the purpose of preventing such a risk that absence of an oil film occurs in clearances of a bearing of the hydrodynamic bearing device due to outflow of oil upon forcing of the oil by air received into the bearing. A step portion is provided on the other end face of the sleeve such that the step portion and the reservoir are communicated with each other by a communication hole. During operation of the hydrodynamic bearing device, air in the hydrodynamic bearing device reaches the reservoir via the communication hole so as to be discharged from the reservoir.

10. 发明申请

US20080129139A1 Spindle motor 失效
标题翻译：主轴电机
公开(公告)号：US20080129139A1
公开(公告)日：2008-06-05
申请号：US11987342
申请日：2007-11-29
申请人： Akihiko Wakitani , Masahiro Jyono , Takao Yoshitsugu , Yoshihiro Ashizaki
发明人： Akihiko Wakitani , Masahiro Jyono , Takao Yoshitsugu , Yoshihiro Ashizaki
IPC分类号： H02K1/14
CPC分类号： H02K1/146 , H02K21/16 , H02K21/24
摘要： In a spindle motor in which teeth portions of a stator core formed by laminating magnetic plates are bent in order to increase the number of turns of the stator windings, a gap in the teeth portions between the magnetic plates is avoided and a precise attractive force adjustment becomes possible. The stator core is bent such that its teeth portions faces a surface of a rotor magnet at right angles, and the teeth portions and salient pole arm portions around which windings are wound are substantially parallel to each other. The salient pole arm portions locate approximately halfway between a lower surface of a hub and an upper surface of a base. Further, a thickness of a magnetic plate is set to be 0.5 to 0.9 times that of other portions.
摘要翻译：在主轴电动机中，通过层叠磁性板而形成的定子铁芯的齿部弯曲以增加定子绕组的匝数，避免了磁性板之间的齿部分的间隙，并且精确的吸引力调节成为可能定子铁心被弯曲成使得其齿部分成直角地面对转子磁体的表面，并且缠绕绕组的齿部分和突出的极臂部分基本上彼此平行。突出的极臂部分大致位于轮毂的下表面和基座的上表面之间的一半处。此外，磁板的厚度设定为其他部分的厚度的0.5〜0.9倍。

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