公开(公告)号：US20030184175A1

公开(公告)日：2003-10-02

申请号：US10385266

申请日：2003-03-10

申请人： Minebea Co., Ltd.

发明人： Toshimitsu Horiuchi ,  Andreas Kull

IPC分类号： H02K005/16

CPC分类号： F16C33/107 ,  F16C17/107 ,  F16C2370/12 ,  G11B19/2009 ,  H02K5/163 ,  H02K7/086

摘要： An apparatus for and a method of construction of a spindle motor having a bearing unit, a rotary shaft, a rotary hub member and an electro-magnetic motor is presented. The rotary shaft has a flange attached at a mid-section in an axial direction, between large and small diameter sections of the rotary shaft. Grooves between the bearing unit, rotary shaft and flange create radial dynamic pressure generating areas, each with as long as possible a span, and thrust dynamic pressure generating areas to both sides of the flange.

摘要翻译： 提出了一种具有轴承单元，旋转轴，旋转轮毂构件和电磁马达的主轴电机的构造装置和方法。 旋转轴在旋转轴的大直径部分和小直径部分之间具有在轴向方向上的中间部分附接的凸缘。 轴承单元，旋转轴和法兰之间的凹槽产生径向动压产生区域，每个区域尽可能长的跨度，并且推力动压力产生区域到法兰的两侧。

公开(公告)号：US20030174439A1

公开(公告)日：2003-09-18

申请号：US10385909

申请日：2003-03-11

申请人： Minebea Co., Ltd.

发明人： Andreas Kull

IPC分类号： G11B017/02

CPC分类号： F16C33/107 ,  F16C17/026 ,  F16C17/10 ,  F16C17/26 ,  F16C2370/12 ,  G11B19/2018 ,  H02K7/085 ,  H02K7/086

摘要： A spindle motor for use in a disk drive including a shaft and a bearing sleeve. The shaft has a larger diameter section and a smaller diameter section with a step formed therebetween. The bearing sleeve has a central cylindrical opening, the shaft being inserted into the central cylindrical opening. A bearing gap is formed between the shaft and the bearing sleeve, the bearing gap being filled with lubricating fluid. A first hydrodynamic thrust bearing is formed in the area of the step. A hydrodynamic radial bearing is formed in the area of the larger diameter section of said shaft.

摘要翻译： 马达具有带有台阶的包括较大和较小直径部分（38,48）的轴（12）。 轴被插入到轴承套（30）的中心开口中。 在轴和轴承套之间形成轴承间隙（40）。 在台阶区域形成一个流体动力推力轴承，在轴的较大直径部分的区域形成一个流体动力学径向轴承。

公开(公告)号：US20030197975A1

公开(公告)日：2003-10-23

申请号：US10385912

申请日：2003-03-11

申请人： Minebea Co., Ltd.

发明人： Andreas Kull

IPC分类号： G11B017/02

CPC分类号： G11B17/028 ,  F16C17/107 ,  F16C2370/12

摘要： A spindle motor for use in a disk drive having a rotor assembly and a stator assembly. The rotor assembly has a hub and a rotating shaft with an outer diameter, the hub being mounted for rotation on the rotating shaft. The stator assembly has a bearing sleeve with a bottom opening, the rotating shaft being inserted into the bearing sleeve for rotation. A counter-plate is inserted into the bottom opening of the bearing sleeve thereby closing the bottom opening. A thrust plate is mounted on the rotating shaft in opposing relationship with the counter-plate, the thrust plate having an outer diameter. A fluid dynamic thrust bearing is formed between the counter-plate and the thrust plate. A ratio between the outer diameter of the shaft to the outer diameter of the thrust plate is reduced to reduce spindle motor's power consumption.

摘要翻译： 一种用于具有转子组件和定子组件的磁盘驱动器中的主轴电动机。 转子组件具有毂和具有外径的旋转轴，毂安装成用于在旋转轴上旋转。 定子组件具有带有底部开口的轴承套筒，该转轴被插入到轴承套筒中以便旋转。 相反的板被插入到轴承套筒的底部开口中，从而关闭底部开口。 推力板与对置板相对地安装在旋转轴上，推力板具有外径。 在对置板和止推板之间形成流体动力推力轴承。 轴的外径与推力板的外径之间的比率减小，以减少主轴电机的功率消耗。

公开(公告)号：US20030174637A1

公开(公告)日：2003-09-18

申请号：US10384012

申请日：2003-03-07

申请人： Minebea Co., Ltd.

发明人： Andreas Kull ,  Joerg Hoffman ,  Olaf Winterhalter

IPC分类号： G11B017/02 ,  G11B023/00 ,  G11B025/00 ,  F16C032/06

CPC分类号： F16C33/107 ,  F16C17/107 ,  F16C2370/12 ,  G11B19/2018 ,  H02K5/1675

摘要： A spindle motor for a hard disk drive having a stationary component with a first bearing surface, and a rotating component with a second bearing surface located in opposing relationship with the first bearing surface. The first and the second bearing surfaces form a hydrodynamic bearing. A bearing gap is formed between the first bearing surface and the second bearing surface, the bearing gap being filled with lubricating fluid. An oil-free recess is provided in the motor for placement of electromagnetic components of the motor. The stationary component is provided with a first set of seal surfaces, and the rotating component is provided with a second set of seal surfaces. The seal surfaces of the first set are located opposite the seal surfaces of the second set and form a labyrinth seal sealing the bearing gap from the oil-free motor recess.

摘要翻译： 一种用于具有具有第一支承表面的固定部件的硬盘驱动器的主轴电机，以及具有与第一支承表面相对置的第二支承表面的旋转部件。 第一和第二轴承表面形成流体动力轴承。 在第一支承面和第二支承面之间形成有轴承间隙，轴承间隙充满润滑液。 马达中设有无油凹槽，用于放置马达的电磁部件。 固定部件设置有第一组密封表面，并且旋转部件设置有第二组密封表面。 第一组的密封表面与第二组的密封表面相对设置，并且形成迷宫式密封，从而将轴承间隙与无油马达凹部密封。

公开(公告)号：US20040056547A1

公开(公告)日：2004-03-25

申请号：US10423769

申请日：2003-04-25

申请人： Minebea Co., Ltd.

发明人： Andreas Kull ,  Roland Beckers

IPC分类号： H02K005/00

CPC分类号： F16C43/02 ,  F16C17/107 ,  F16C33/107 ,  F16C2226/36 ,  F16C2370/12 ,  G11B19/2018 ,  H02K5/1675

摘要： A hydrodynamic bearing system, in particular for a spindle motor, preferably for driving magnetic disks in disk drives, having at least one journal bearing formed by a shaft rotatably borne in a bearing sleeve. The hydrodynamic bearing system further includes at least one thrust bearing formed by a thrust plate, rotatably received in a recess of the sleeve and securely joined to the shaft, and a counter-bearing associated with the thrust plate that is in the form of a cover plate. The cover plate rests on and is attached to one end face of the sleeve. This reduces assembly-induced flexure in the cover plate.

摘要翻译： 一种流体动力轴承系统，特别是用于主轴电动机，优选地用于驱动磁盘驱动器中的磁盘，具有至少一个轴颈轴承，所述轴颈轴承可旋转地支承在轴承套筒中。 流体动力轴承系统还包括至少一个推力轴承，其由止推板形成，该止推板可旋转地容纳在套筒的凹部中并牢固地连接到轴上，以及与止推板相关的反作用轴承 盘子。 盖板靠在套筒的一个端面上并附着在套筒的一个端面上。 这减少了盖板中的组装引起的挠曲。

公开(公告)号：US20030174914A1

公开(公告)日：2003-09-18

申请号：US10387047

申请日：2003-03-12

申请人： Minebea Co., Ltd.

发明人： Andreas Kull ,  Olaf Winterhalter ,  Joerg Hoffmann ,  Martin Hafen

IPC分类号： F16C032/06 ,  F16C033/74

CPC分类号： F16C33/74 ,  F16C17/10 ,  F16C33/107 ,  F16C2370/12 ,  H02K7/085 ,  H02K7/086 ,  H02K7/09

摘要： The present invention provides a bearing comprised of a hydrodynamic bearing and a pivot bearing, which can be used with a spindle motor. It also provides a spindle motor utilizing a hydrodynamic bearing and a pivot bearing.

摘要翻译： 本发明提供一种由液压动力轴承和枢转轴承构成的轴承，该轴承可与主轴电机一起使用。 它还提供使用流体动力轴承和枢轴轴承的主轴电机。

公开(公告)号：US20030174913A1

公开(公告)日：2003-09-18

申请号：US10385821

申请日：2003-03-11

申请人： Minebea Co., Ltd.

发明人： Andreas Kull

IPC分类号： F16C032/06

CPC分类号： F16C33/1065 ,  F16C17/107 ,  F16C2370/12 ,  G11B19/2009 ,  H02K5/1675 ,  H02K7/086

摘要： A spindle motor for use in a disk drive, the spindle motor including a shaft having a larger diameter section and a smaller diameter section with a step formed therebetween. The spindle motor also includes a bearing sleeve having a central cylindrical opening, the shaft is inserted into the central cylindrical opening. A bearing gap is formed between the shaft and the bearing sleeve, the bearing gap being filled with lubricating fluid. A thrust plate is fixedly mounted on the shaft in the area of the step such that an upper side of the thrust plate is placed adjacently to the larger diameter section and a lower side of the thrust plate is placed adjacently to the smaller diameter section of the shaft.

摘要翻译： 一种用于盘驱动器的主轴电动机，所述主轴电动机包括具有较大直径部分和较小直径部分的轴，所述轴在其间形成有台阶。 主轴电机还包括具有中心圆柱形开口的轴承套筒，该轴插入中心圆柱形开口中。 在轴和轴承套之间形成轴承间隙，轴承间隙充满润滑流体。 推力板在台阶区域中固定地安装在轴上，使得推力板的上侧相对于较大直径部分放置，并且推力板的下侧相邻于较小直径部分 轴。

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。

公开(公告)号：US20040251755A1

公开(公告)日：2004-12-16

申请号：US10459014

申请日：2003-06-10

申请人： Minebea Co., Ltd.

发明人： Andreas Kull

IPC分类号： H02K005/16 ,  H02K007/08 ,  F16C032/06

CPC分类号： F16C33/107 ,  F16C17/105 ,  F16C17/22 ,  H02K5/1677 ,  H02K7/086

摘要： The present invention provides a spindle motor and a method of manufacturing a spindle motor wherein a bearing unit is manufactured as a discrete modular component. A spindle motor that meets a set of specific technical requirements can be easily manufactured by combining such a bearing unit with other spindle moor components.

摘要翻译： 本发明提供一种主轴电动机和一种制造主轴电机的方法，其中轴承单元被制造为分立的模块化部件。 通过将这种轴承单元与其他主轴停泊部件组合，可以容易地制造满足一组具体技术要求的主轴电机。

公开(公告)号：US20040174078A1

公开(公告)日：2004-09-09

申请号：US10734013

申请日：2003-12-11

申请人： Minebea Co., Ltd.

发明人： Andreas Kull

IPC分类号： H02K005/16 ,  H02K007/08

CPC分类号： F16C33/107 ,  F16C17/026 ,  F16C17/10 ,  H02K5/1677

摘要： A spindle motor for hard disk drives having a hydrodynamic bearing arrangement The arrangement has a shaft and a bearing sleeve including an upper sleeve part, a lower sleeve part and a spacer. The upper and lower sleeve parts are axially separated by the spacer. The shaft is positioned within the upper and lower sleeve parts. An annular cavity is formed by the upper sleeve part, lower sleeve part and the spacer where a thrust plate, attached to a central position along the longitudinal axis of the shaft, is located.

摘要翻译： 一种用于具有流体动力轴承装置的硬盘驱动器的主轴电机。该装置具有轴和包括上套筒部分，下套筒部分和间隔件的轴承套筒。 上部和下部套筒部分由间隔件轴向分开。 轴位于上下套筒部分内。 由上套筒部分，下套筒部分和间隔件形成环形空腔，其中安装有沿着轴的纵向轴线的中心位置的止推板。