公开(公告)号：US20040028301A1

公开(公告)日：2004-02-12

申请号：US10620224

申请日：2003-07-15

申请人： Minebea Co., Ltd.

发明人： Andreas Kull ,  Tadashi Akahori

IPC分类号： F16C032/06

CPC分类号： F16C33/1085 ,  F16C17/107 ,  F16C33/103 ,  H02K5/1675

摘要： A hydrodynamic bearing system, particularly for the rotary bearing of spindle motors to power hard disk drives. The bearing system includes a bearing sleeve, a shaft accommodated in an opening in the bearing sleeve and at least one radial bearing section provided between the bearing sleeve and the shaft with the aid of which the shaft and the bearing sleeve are supported rotatably in relation to each other. A bearing gap is formed between the shaft and the bearing sleeve and is filled with a liquid lubricant. A lubricant reservoir and equalizing volume independent from the design of the bearing arrangement is provided in that at least one duct is formed in the bearing sleeve that extends from an outer section of the bearing sleeve to the bearing gap and that is at least partially filled with lubricant.

摘要翻译： 一种流体动力轴承系统，特别适用于主轴电机的旋转轴承为硬盘驱动器供电。 所述轴承系统包括轴承套筒，容纳在所述轴承套筒中的开口中的轴以及设置在所述轴承套筒和所述轴之间的至少一个径向支承部分，所述轴和所述轴承套筒可相对于 彼此。 在轴和轴承套之间形成轴承间隙，并填充有液体润滑剂。 提供了一种独立于轴承装置的设计的润滑剂储存器和均衡体积，其中至少一个管道形成在从轴承套筒的外部部分延伸到轴承间隙的轴承套筒中，并且至少部分地填充有 润滑剂。

公开(公告)号：US20030201682A1

公开(公告)日：2003-10-30

申请号：US10385910

申请日：2003-03-11

申请人： Minebea Co., Ltd.

发明人： Andreas Kull

IPC分类号： H02K009/00

CPC分类号： H02K7/086 ,  F16C17/02 ,  F16C17/107 ,  F16C17/26 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2018 ,  H02K5/1675 ,  H02K7/085

摘要： A spindle motor for use in a disk drive having a base frame, a housing cover, a fixed shaft and a rotatable bearing sleeve. The fixed shaft has a larger diameter section and a smaller diameter section with a step formed therebetween. The rotatable bearing sleeve has a central cylindrical opening, the shaft being inserted into the central cylindrical opening. A bearing gap is formed between the fixed shaft and the rotatable bearing sleeve, the bearing gap being filled with lubricating fluid. One end of the fixed shaft is secured to the base frame while another end of the shaft is secured to the housing cover.

摘要翻译： 一种用于具有基架，壳体盖，固定轴和可旋转轴承套的盘驱动器中的主轴电机。 固定轴具有较大的直径部分和较小的直径部分，其间形成台阶。 可旋转轴承套筒具有中心圆柱形开口，该轴插入中心圆柱形开口中。 在固定轴和可转动的轴承套之间形成轴承间隙，轴承间隙充满润滑流体。 固定轴的一端固定在基座上，轴的另一端固定在壳体盖上。