公开(公告)号：US20060192452A1

公开(公告)日：2006-08-31

申请号：US11176265

申请日：2005-07-08

申请人： Yasunori Tokuno ,  Yoshitada Higuchi

发明人： Yasunori Tokuno ,  Yoshitada Higuchi

IPC分类号： H02K5/16 ,  F16C32/06

CPC分类号： G11B19/2009 ,  F16C17/107 ,  F16C33/107 ,  F16C33/74 ,  F16C2370/12 ,  H02K5/1677

摘要： Object: A spindle motor of the type in which both ends of a shaft are fixed has a structure in which both ends of a hydrodynamic bearing are open to the atmosphere, and when the rotational precision of rotating bodies is poor, the bearing is subjected to a great deal of fluctuating stress, and leakage of the lubricant occurs. Means for Solution: In a spindle motor having a fluid bearing in which a narrow gap is formed between the surface of a fixed shaft member and a sleeve component (rotating member), and this gap is filled with a lubricating fluid, the shaft member has an annular collar formed so as to protrude substantially perpendicularly to the cylindrical surface of the shaft member. The rotating member is such that the sleeve component fitted over the shaft member is constituted integrally with a hub component that fixes a magnetic disk, and an annular seal member is fixed to the upper end side of the shaft member.

摘要翻译： 对象：轴的两端固定的主轴电机具有其中流体动力轴承的两端向大气开放的结构，并且当旋转体的旋转精度差时，轴承受 发生大量的波动应力，并发生润滑剂泄漏。 解决方案：在具有在固定轴构件的表面和套筒部件（旋转构件）之间形成有窄间隙的流体轴承的主轴电动机中，并且该间隙填充有润滑流体，轴构件具有 环形套环形成为基本上垂直于轴构件的圆柱形表面突出。 旋转构件使得安装在轴构件上的套筒部件与固定磁盘的毂部件一体地构成，并且环形密封构件固定到轴构件的上端侧。

公开(公告)号：US20080211334A1

公开(公告)日：2008-09-04

申请号：US12111030

申请日：2008-04-28

申请人： Yasunori TOKUNO ,  Yoshitada Higuchi

发明人： Yasunori TOKUNO ,  Yoshitada Higuchi

IPC分类号： H02K7/08

CPC分类号： F16C17/10 ,  F16C17/045 ,  F16C33/107 ,  F16C33/74 ,  F16C2370/12 ,  G11B19/2009

摘要： A spindle motor comprises a fixed shaft member, a sleeve, and an annular chucking portion. The fixed shaft member has an annular collar protruding outward from and substantially perpendicular to the outer peripheral surface of said fixed shaft member, and also has a thrust flange provided a specific distance away from said annular collar. The sleeve component is monolithic with a hub component The annular chucking portion is formed to include a surface along an axial direction outside said thrust flange in a diameter direction of said thrust flange. The annular chucking portion is disposed at a position in an axial direction that includes a vertical position of a surface to which said disk is attached.

摘要翻译： 主轴电动机包括固定轴构件，套筒和环形夹紧部分。 固定轴构件具有从所述固定轴构件的外周面向外突出并且基本上垂直于所述固定轴构件的外周表面的环形套环，并且还具有与所述环形套环相距特定距离的推力凸缘。 套筒部件与轮毂部件是整体的。环形夹紧部分形成为包括在所述推力凸缘的直径方向上沿着轴向方向在所述推力凸缘外侧的表面。 环形夹持部设置在包括所述盘所附接的表面的垂直位置的轴向方向上。