公开(公告)号：WO03094164A9

公开(公告)日：2004-06-03

申请号：PCT/US0313330

申请日：2003-04-29

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： LEBLANC JEFFRY ,  GRANTZ ALAN ,  HERNDON TROY ,  KENNEDY MICHAEL ,  AIELLO ANTHONY ,  NOTTINGHAM ROBERT

IPC: F16C17/04 ,  F16C17/10 ,  F16C33/10 ,  G11B19/20 ,  H02K7/08

CPC classification number: F16C33/107 ,  F16C17/045 ,  F16C17/10 ,  F16C33/1085 ,  F16C2370/12 ,  G11B19/2009 ,  H02K7/085 ,  H02K7/086

Abstract: A fluid bearing design is provided which according to one aspect includes a shaft defining together with a surrounding sleeve an asymmetric journal bearing, and a thrust bearing at or near an end of the shaft towards which the asymmetric journal bearing is pumping, with that end of the shaft being closed off. The journal bearing asymmetry establishes a hydraulic pressure toward the closed end of the shaft. This pressure provides an axial thrust to set the bearing gap for the conical bearing. The conical bearing itself is a relatively balanced bearing, although it may have a bias pumping toward the shaft and the journal bearing. A pressure closed equalization path from the journal bearing through the conical bearing to the end of the shaft may be established to maintain a constant hydraulic force across the conical bearing, and which may also prevent any asymmetry in the conical bearing from affecting the net thrust force acting upon the end of the shaft where the conical bearing is located. Alternatively, in a fluid dynamic bearing design comprising a shaft and a thrust plate at or near an end of the shaft, asymmetry is again established along the journal bearing to establish a pressure gradient directed toward the thrust bearing.

Abstract translation: 根据一个方面，提供了一种流体轴承设计，该流体轴承设计包括与周围套筒一起限定不对称轴颈轴承的轴和在不对称轴颈轴承泵送的轴的端部处或附近的推力轴承， 轴被关闭。 轴颈轴承不对称会形成朝向轴封闭端的液压。 该压力提供轴向推力来设置锥形轴承的轴承间隙。 锥形轴承本身是一个相对平衡的轴承，尽管它可能有偏置泵轴和轴颈轴承。 可以建立从轴颈轴承通过锥形轴承到轴端部的压力闭合均衡路径，以保持锥形轴承上的恒定液压力，并且还可以防止锥形轴承中的任何不对称性影响净推力 作用于锥形轴承所在的轴的末端。 可替代地，在包括轴和在轴的端部附近的推力板的流体动力轴承设计中，沿着轴颈轴承再次建立不对称以建立指向推力轴承的压力梯度。

公开(公告)号：WO03094164B1

公开(公告)日：2004-08-05

申请号：PCT/US0313330

申请日：2003-04-29

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： LEBLANC JEFFRY ,  GRANTZ ALAN ,  HERNDON TROY ,  KENNEDY MICHAEL ,  AIELLO ANTHONY ,  NOTTINGHAM ROBERT

IPC: F16C17/04 ,  F16C17/10 ,  F16C33/10 ,  G11B19/20 ,  H02K7/08

CPC classification number: F16C33/107 ,  F16C17/045 ,  F16C17/10 ,  F16C33/1085 ,  F16C2370/12 ,  G11B19/2009 ,  H02K7/085 ,  H02K7/086

Abstract: A fluid bearing design is provided which according to one aspect includes a shaft defining together with a surrounding sleeve an asymmetric journal bearing, and a thrust bearing at or near an end of the shaft towards which the asymmetric journal bearing is pumping, with that end of the shaft being closed off. The journal bearing asymmetry establishes a hydraulic pressure toward the closed end of the shaft. This pressure provides an axial thrust to set the bearing gap for the conical bearing. The conical bearing itself is a relatively balanced bearing, although it may have a bias pumping toward the shaft and the journal bearing. A pressure closed equalization path from the journal bearing through the conical bearing to the end of the shaft may be established to maintain a constant hydraulic force across the conical bearing, and which may also prevent any asymmetry in the conical bearing from affecting the net thrust force acting upon the end of the shaft where the conical bearing is located. Alternatively, in a fluid dynamic bearing design comprising a shaft and a thrust plate at or near an end of the shaft, asymmetry is again established along the journal bearing to establish a pressure gradient directed toward the thrust bearing.

Abstract translation: 提供了一种流体轴承设计，其根据一个方面包括与围绕套筒一起形成的不对称轴颈轴承的轴，以及位于轴的端部处或其附近的推力轴承，不对称轴颈轴承朝向该轴向泵送， 轴关闭。 轴颈不对称性建立了朝向轴封闭端的液压。 该压力提供轴向推力以设定圆锥轴承的轴承间隙。 锥形轴承本身是相对平衡的轴承，尽管它可能具有朝向轴和轴颈轴承的偏压泵送。 可以建立从轴颈轴承通过锥形轴承到轴的端部的压力均衡路径，以保持横跨锥形轴承的恒定的液压力，并且还可以防止锥形轴承中的任何不对称性影响净推力 作用在锥形轴承所在的轴的端部。 或者，在包括在轴的端部处或附近的轴和止推板的流体动态轴承设计中，沿轴颈轴承再次建立不对称性，以建立指向推力轴承的压力梯度。

公开(公告)号：WO2004001742A3

公开(公告)日：2004-02-19

申请号：PCT/US0319621

申请日：2003-06-20

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： PARSONEAULT NORBERT ,  NOTTINGHAM ROBERT ,  GRANTZ ALAN ,  TILLER MICHAEL

IPC: F16C17/10 ,  G11B19/20 ,  H02K5/16 ,  H02K7/08 ,  H02K21/22

CPC classification number: G11B19/2009 ,  H02K7/085

Abstract: A motor is provided comprising a rotor, a stationary sleeve disposed about the rotor, a fluid dynamic bearing between the rotor and sleeve, and a limiter for restricting axial movement of the rotor relative to the stationary sleeve.

Abstract translation: 提供一种电动机，其包括转子，围绕转子设置的静止套筒，转子和套筒之间的流体动力轴承以及用于限制转子相对于静止套筒的轴向运动的限制器。

公开(公告)号：WO2004001740A3

公开(公告)日：2004-02-12

申请号：PCT/US0319572

申请日：2003-06-20

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： NOTTINGHAM ROBERT ,  PARSONEAULT NORBERT ,  LEBLANC JEFFRY ,  HERNDON TROY

IPC: F16C17/10 ,  F16C17/26 ,  F16C33/10 ,  G11B19/20 ,  H02K5/16 ,  H02K7/08 ,  H02K21/22 ,  F16C32/06 ,  F16C33/74

CPC classification number: F16C17/26 ,  F16C17/10 ,  F16C33/10 ,  F16C2370/12 ,  G11B19/2018 ,  H02K5/1677

Abstract: The present invention relates to the field of fluid dynmaic bearings. Specifically, the present invention provides a secondary fluid resrvoir for the fluid used in a fluid dynamic bearing in a high-speed spindle motor assembly. More specifically the invention relates to a fluid dynamic assembly for disk drive comprising an annular bearing cone (506) having a central annular opening, a bottom, a top and a middle, upper walls angling out from the top to the middle, lower walls angling out from the bottom to the middle to meet the upper walls; a bearing sleeve (504) adjacent to the annular bearing cone; a shield seal member (502) abutting the bearing sleeve and adjacent the annular bearing cone; an annular shield member (522) above the annular bearing cone; a first fluid reservoir between the annular bearing cone (506) and the shield seal member (502); a second fluid reservoir between the annular bearing cone (506) and the annular shield member (522); and capillary path means (513) between the first fluid reservoir and the second fluid reservoir.

Abstract translation: 本发明涉及流体动力轴承领域。 具体地说，本发明提供了一种用于在高速主轴电动机组件中的流体动力轴承中使用的流体的二次流体储存器。 更具体地说，本发明涉及一种用于磁盘驱动器的流体动力学组件，其包括具有中心环形开口，底部，顶部和中部，从顶部到中部倾斜的上部壁的环形支承锥体（506） 从底部到中间，满足上面的墙壁; 与所述环形轴承锥相邻的轴承套筒（504）; 屏蔽密封构件（502），其邻接所述轴承套筒并且邻近所述环形轴承锥体; 在所述环形轴承锥体上方的环形屏蔽构件（522）; 在所述环形支承锥体（506）和所述屏蔽密封构件（502）之间的第一流体储存器; 在所述环形支承锥体（506）和所述环形屏蔽构件（522）之间的第二流体储存器; 和在第一流体储存器和第二流体储存器之间的毛细管路装置（513）。