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1.发明授权Dynamic fluid pressure bearing, spindle motor, disk drive apparatus and method for manufacturing the dynamic fluid pressure bearing 有权动态流体压力轴承，主轴电机，磁盘驱动装置以及用于制造动态流体压力轴承的方法公开(公告)号：US08215842B2
公开(公告)日：2012-07-10
申请号：US12362576
申请日：2009-01-30
IPC分类号： F16C32/06
CPC分类号： G11B19/2036 , F16C17/10 , F16C33/107 , F16C33/1085 , F16C2370/12 , H02K5/1675 , H02K5/1677 , H02K7/085 , Y10T29/49639
摘要： A fluid dynamic pressure bearing includes a shaft arranged along a central axis, an annular member fixed to the shaft, a sleeve, a lubricant, and a lubricating film. A stepped surface is provided on the outer circumferential surface of the shaft. The annular member preferably includes a lower surface extending radially with respect to the central axis and arranged to make contact with the stepped surface in the inner edge portion of the lower surface. The sleeve preferably includes an upper surface axially opposed to the lower surface of the annular member. The lubricant is provided between the shaft and the sleeve and between the annular member and the sleeve. The lubricating film is provided on the lower surface of the annular member at least over a region lying radially outwardly of the inner edge portion of the lower surface.
摘要翻译： 流体动压轴承包括沿着中心轴布置的轴，固定到轴的环形构件，套筒，润滑剂和润滑膜。 在轴的外周面上设有台阶面。 环形构件优选地包括相对于中心轴线径向延伸的下表面，并且布置成与下表面的内边缘部分中的台阶表面接触。 套筒优选地包括与环形构件的下表面轴向相对的上表面。 润滑剂设置在轴和套筒之间以及环形构件和套筒之间。 润滑膜至少在位于下表面的内边缘部分的径向外侧的区域上设置在环形构件的下表面上。
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2.发明申请DYNAMIC FLUID PRESSURE BEARING, SPINDLE MOTOR, DISK DRIVE APPARATUS AND METHOD FOR MANUFACTURING THE DYNAMIC FLUID PRESSURE BEARING 有权动力式液压轴承，主轴电机，磁盘驱动装置及制造动态流体轴承的方法公开(公告)号：US20090196540A1
公开(公告)日：2009-08-06
申请号：US12362576
申请日：2009-01-30
CPC分类号： G11B19/2036 , F16C17/10 , F16C33/107 , F16C33/1085 , F16C2370/12 , H02K5/1675 , H02K5/1677 , H02K7/085 , Y10T29/49639
摘要： A fluid dynamic pressure bearing includes a shaft arranged along a central axis, an annular member fixed to the shaft, a sleeve, a lubricant, and a lubricating film. A stepped surface is provided on the outer circumferential surface of the shaft. The annular member preferably includes a lower surface extending radially with respect to the central axis and arranged to make contact with the stepped surface in the inner edge portion of the lower surface. The sleeve preferably includes an upper surface axially opposed to the lower surface of the annular member. The lubricant is provided between the shaft and the sleeve and between the annular member and the sleeve. The lubricating film is provided on the lower surface of the annular member at least over a region lying radially outwardly of the inner edge portion of the lower surface.
摘要翻译： 流体动压轴承包括沿着中心轴布置的轴，固定到轴的环形构件，套筒，润滑剂和润滑膜。 在轴的外周面上设有台阶面。 环形构件优选地包括相对于中心轴线径向延伸的下表面，并且布置成与下表面的内边缘部分中的台阶表面接触。 套筒优选地包括与环形构件的下表面轴向相对的上表面。 润滑剂设置在轴和套筒之间以及环形构件和套筒之间。 润滑膜至少在位于下表面的内边缘部分的径向外侧的区域上设置在环形构件的下表面上。
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