公开(公告)号：US20040081378A1

公开(公告)日：2004-04-29

申请号：US10621756

申请日：2003-07-17

申请人： Minebea Co., Ltd.

发明人： Ralf Dittes ,  Helmut Hueneke ,  Joerg Hoffman ,  Jurgen Oelsch ,  Thilo Rehm ,  Mathias Wildpreth ,  Olaf Winterhalter

IPC分类号： F16C032/06

CPC分类号： F16C17/08 ,  F16C17/107

摘要： A hydrodynamic thrust bearing, particularly forming a part of a bearing system for a rotary bearing of spindle motors utilized to power hard disk drives. The thrust bearing includes at least one annular thrust plate and a counter bearing corresponding to the thrust plate. The thrust plate is fixedly mounted on a shaft rotatably supported by means of a radial bearing system. The thrust plate is arranged on the shaft which is provided with an axial bore in the area where the thrust plate is to be positioned. A spherical element fixing the thrust plate is pressed into the axial bore. An outer diameter of the fixing element is greater than the inner diameter of the axial bore. This type of press connection between the thrust plate and the shaft allows comparatively thinner thrust plates to be used while the performance of the thrust bearing remains the same or improves.

摘要翻译： 一种流体动力推力轴承，特别是形成用于为硬盘驱动器供电的主轴马达的旋转轴承的轴承系统的一部分。 推力轴承包括至少一个环形推力板和对应于止推板的反向轴承。 止推板固定地安装在通过径向轴承系统可旋转地支撑的轴上。 推力板布置在轴上，该轴在推力板的定位区域设有轴向孔。 固定推力板的球形元件被压入轴向孔。 固定元件的外径大于轴向孔的内径。 推力板和轴之间的这种压力连接允许在推力轴承的性能保持相同或改进的同时使用较薄的推力板。

公开(公告)号：US20030123764A1

公开(公告)日：2003-07-03

申请号：US10324398

申请日：2002-12-20

申请人： Minebea Co., Ltd.

发明人： Andreas Kull ,  Mathias Wildpreth ,  Martin Hafen ,  Jorg Hoffmann

IPC分类号： F16C032/06

CPC分类号： F16C17/10 ,  F16C17/026 ,  F16C33/103 ,  F16C33/107

摘要： A hydrodynamic bearing system for use in a spindle motor, especially for the actuation of hard disk drives, wherein the bearing arrangement features a shaft and a sleeve which, supported by a lubricant circulating between their bearing surfaces, are rotatable relative to one another. A reservoir for the lubricant is formed by a recess provided in the shaft and the inner surface of the sleeve. The reservoir is provided in the area of the face of at least one opening in the sleeve. To enable the fill level of the lubricant in the reservoir to be checked, the recess is provided with tapering transitional areas contours of which form an acute angle with the cutting plane of the shaft.

摘要翻译： 一种用于主轴电动机，特别是用于驱动硬盘驱动器的流体动力轴承系统，其中轴承装置具有轴和套筒，其由在其支承表面之间循环的润滑剂支撑，可相对于彼此旋转。 用于润滑剂的储存器由设置在轴中的凹部和套筒的内表面形成。 储存器设置在套筒中的至少一个开口的表面的区域中。 为了确保储存器中的润滑剂的填充水平被检查，所述凹部具有与轴的切割平面形成锐角的锥形过渡区域轮廓。