公开(公告)号：US07465097B2

公开(公告)日：2008-12-16

申请号：US11321028

申请日：2005-12-29

申请人： Andreas Kull

发明人： Andreas Kull

IPC分类号： F16C32/06

CPC分类号： F16C35/02 ,  F16C17/026 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2018

摘要： The invention relates to a fluid dynamic bearing system particularly to rotatably support a spindle motor to drive the disk(s) of a hard disk drive. The bearing system comprises a bearing sleeve and a shaft accommodated in a bore in the bearing sleeve and rotatably supported with respect to the bearing sleeve, the surfaces of the bearing sleeve and of the shaft, which face each other and are separated by a bearing gap (3) filled with a bearing fluid, forming at least one first radial bearing region. According to the invention the diameter of the shaft is chosen such that the relationship between the bearing distance, i.e. the distance of the fixing point of the shaft to the first radial bearing region, and the diameter of the shaft is equal to or less than 0.9, and that the diameter of the shaft is preferably 3 mm to 5 mm.This provision causes the resonance frequency of the bearing to shift to a higher, uncritical frequency range.

摘要翻译： 本发明涉及一种流体动力轴承系统，特别是可旋转地支撑主轴电机以驱动硬盘驱动器的盘。 轴承系统包括轴承套筒和容纳在轴承套筒中的孔中的轴，并且相对于轴承套筒轴承套筒和轴的表面可旋转地支撑，它们彼此面对并被轴承间隙分开 （3）填充有轴承流体，形成至少一个第一径向承载区域。 根据本发明，轴的直径被选择为使得轴承距离（即，轴的固定点与第一径向支承区域的距离）和轴的直径之间的关系等于或小于0.9 轴的直径优选为3mm〜5mm。 该设置使得轴承的共振频率转移到更高的非临界频率范围。

公开(公告)号：US07290933B2

公开(公告)日：2007-11-06

申请号：US10951984

申请日：2004-09-28

申请人： Dieter Braun ,  Joerg Hoffmann ,  Andreas Kull

发明人： Dieter Braun ,  Joerg Hoffmann ,  Andreas Kull

IPC分类号： F16C17/10

CPC分类号： F16C33/1085 ,  F16C17/107 ,  F16C33/107 ,  F16C2370/12

摘要： The invention relates to a hydrodynamic bearing, particularly for a spindle motor, comprising a shaft, a thrust plate connected to the shaft and a bearing sleeve closed at one end by a cover plate, the bearing sleeve enclosing the shaft and the thrust plate with a slight radial spacing forming a concentric bearing gap filled with a lubricant. As is already known, the surfaces of the bearing sleeve and the shaft facing each other form at least one radial bearing region and the surfaces of the bearing sleeve, the cover plate and the thrust plate facing each other form at least one axial bearing region. In the hydrodynamic bearing according to the invention, at least one connecting channel is provided which connects a section between the bearing sleeve and the shaft abutting the radial bearing region and a section of the bearing gap abutting the axial bearing region to each other.

摘要翻译： 本发明涉及一种特别用于主轴电动机的流体动力轴承，包括轴，连接到轴的止推板和在一端由盖板封闭的轴承套筒，轴承套筒将轴和推力板用一个 轻微的径向间隔形成填充有润滑剂的同心轴承间隙。 如已经知道的那样，轴承套和轴彼此相对的表面形成至少一个径向支承区域，并且轴承套筒，盖板和止推板彼此面对的表面形成至少一个轴向支承区域。 在根据本发明的流体动力轴承中，提供了至少一个连接通道，其连接轴承套筒和抵靠径向支承区域的轴线之间的部分以及轴承间隙的与轴向支承区域彼此邻接的部分。

公开(公告)号：US07016146B2

公开(公告)日：2006-03-21

申请号：US10385909

申请日：2003-03-11

申请人： Andreas Kull

发明人： Andreas Kull

IPC分类号： G11B17/02

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： 一种用于包括轴和轴承套的磁盘驱动器的主轴电动机。 轴具有较大的直径部分和较小的直径部分，其间形成有台阶。 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。 在轴和轴承套之间形成轴承间隙，轴承间隙充满润滑流体。 第一流体动力推力轴承形成在台阶区域。 在所述轴的较大直径部分的区域中形成流体动力学径向轴承。

公开(公告)号：US06998745B2

公开(公告)日：2006-02-14

申请号：US10385266

申请日：2003-03-10

申请人： Toshimitsu Horiuchi ,  Andreas Kull

发明人： Toshimitsu Horiuchi ,  Andreas Kull

IPC分类号： H02K7/08

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：US06980393B2

公开(公告)日：2005-12-27

申请号：US10385912

申请日：2003-03-11

申请人： Andreas Kull

发明人： Andreas Kull

IPC分类号： G11B17/028 ,  H02K7/08 ,  G11B17/02

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：US20050074191A1

公开(公告)日：2005-04-07

申请号：US10951984

申请日：2004-09-28

申请人： Dieter Braun ,  Joerg Hoffmann ,  Andreas Kull

发明人： Dieter Braun ,  Joerg Hoffmann ,  Andreas Kull

IPC分类号： F16C17/10 ,  F16C33/10 ,  F16C33/74 ,  G11B19/20 ,  H02K5/16 ,  H02K7/08 ,  F16C32/06

CPC分类号： F16C33/1085 ,  F16C17/107 ,  F16C33/107 ,  F16C2370/12

摘要： The invention relates to a hydrodynamic bearing, particularly for a spindle motor, comprising a shaft, a thrust plate connected to the shaft and a bearing sleeve closed at one end by a cover plate, the bearing sleeve enclosing the shaft and the thrust plate with a slight radial spacing forming a concentric bearing gap filled with a lubricant. As is already known, the surfaces of the bearing sleeve and the shaft facing each other form at least one radial bearing region and the surfaces of the bearing sleeve, the cover plate and the thrust plate facing each other form at least one axial bearing region. In the hydrodynamic bearing according to the invention, at least one connecting channel is provided which connects a section between the bearing sleeve and the shaft abutting the radial bearing region and a section of the bearing gap abutting the axial bearing region to each other.

摘要翻译： 本发明涉及一种特别用于主轴电动机的流体动力轴承，包括轴，连接到轴的止推板和在一端由盖板封闭的轴承套筒，轴承套筒将轴和推力板封闭在一起 轻微的径向间隔形成填充有润滑剂的同心轴承间隙。 如已经知道的那样，轴承套和轴彼此相对的表面形成至少一个径向支承区域，并且轴承套筒，盖板和止推板彼此面对的表面形成至少一个轴向支承区域。 在根据本发明的流体动力轴承中，提供了至少一个连接通道，其连接轴承套筒和抵靠径向支承区域的轴线之间的部分以及轴承间隙的与轴向支承区域彼此邻接的部分。

公开(公告)号：US06848829B2

公开(公告)日：2005-02-01

申请号：US10324398

申请日：2002-12-20

申请人： Martin Hafen ,  Jorg Hoffmann ,  Andreas Kull ,  Mathias Wildpreth

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

IPC分类号： F16C33/10 ,  F16C32/06

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：US06815854B2

公开(公告)日：2004-11-09

申请号：US10385910

申请日：2003-03-11

申请人： Andreas Kull

发明人： Andreas Kull

IPC分类号： H02K708

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.

公开(公告)号：US08562218B2

公开(公告)日：2013-10-22

申请号：US12755793

申请日：2010-04-07

申请人： Andreas Kull

发明人： Andreas Kull

IPC分类号： F16C32/06

CPC分类号： H02K5/1675 ,  F16C17/045 ,  F16C17/107 ,  F16C2240/46 ,  F16C2370/12 ,  G11B19/2036

摘要： A fluid dynamic bearing including a bearing bush having a central bearing bore in which a shaft is rotatably supported. Surfaces of the shaft and of the bearing bore that face each other are separated from one another by a bearing gap filled with a bearing fluid. A first radial bearing section and a second radial bearing section are disposed along the bearing gap, between which a separator section is disposed. The width of the bearing gap varies with its axial length. The bearing gap has a first inner width ib1 and a second inner width ib2 in the region of the first and of the second radial bearing section on the sides facing the separator section, a first outer width ab1 and a second outer width ab2 on the sides remote from the separator section. According to the invention, the differences resulting from the inner widths and the outer widths, ib1−ab1 and ib2−ab2, lie in an interval of a−t to a+t, where a is greater than zero and t is greater than a.

摘要翻译： 一种流体动力轴承，包括具有中心轴承孔的轴承衬套，轴可旋转地支撑在该中心轴承孔中。 通过填充有轴承流体的轴承间隙，彼此面对的轴和轴承孔的表面彼此分离。 第一径向轴承部分和第二径向支承部分沿着轴承间隙设置，在其间设置有分离器部分。 轴承间隙的宽度随其轴向长度而变化。 轴承间隙在面向分离器部分的一侧的第一和第二径向轴承部分的区域中具有第一内部宽度ib1和第二内部宽度ib2，侧面上的第一外部宽度ab1和第二外部宽度ab2 远离分隔部分。 根据本发明，由内部宽度和外部宽度ib1-ab1和ib2-ab2产生的差异在a-t至a + t的间隔中，其中a大于零且t大于a。

公开(公告)号：US20100264763A1

公开(公告)日：2010-10-21

申请号：US12755793

申请日：2010-04-07

申请人： Andreas KULL

发明人： Andreas KULL

IPC分类号： H02K5/16 ,  F16C32/06 ,  H02K7/08

CPC分类号： H02K5/1675 ,  F16C17/045 ,  F16C17/107 ,  F16C2240/46 ,  F16C2370/12 ,  G11B19/2036

摘要： The invention relates to a fluid dynamic bearing having a bearing bush having a central bearing bore in which a shaft is rotatably supported. Surfaces facing each other of the shaft and of the bearing bore are separated from one another by a bearing gap filled with a bearing fluid. A first radial bearing section and a second radial bearing section are disposed along the bearing gap between which a separator section is disposed. The width of the bearing gap varies with its axial length. The bearing gap has a first inner width ib1 and a second inner width ib2 in the region of the first and of the second radial bearing section on the sides facing the separator section and a first outer width ab1 and a second outer width ab2 on the sides remote from the separator section. According to the invention, the differences resulting from the inner widths and the outer widths ib1−ab1 and ib2−ab2 ib1, lie in an interval of a−t to a+t, where a is greater than zero and t is greater than a.

摘要翻译： 本发明涉及一种具有轴承衬套的流体动力轴承，所述轴承衬套具有中心轴承孔，轴可旋转地支撑在该中心轴承孔中。 轴和轴承孔彼此相对的表面通过填充有轴承流体的轴承间隙彼此分离。 第一径向轴承部分和第二径向支承部分沿着轴承间隙设置，在该间隙处设置有分离器部分。 轴承间隙的宽度随其轴向长度而变化。 轴承间隙在面向分离器部分的一侧的第一和第二径向承载部分的区域中具有第一内部宽度ib1和第二内部宽度ib2，并且在侧面上具有第一外部宽度ab1和第二外部宽度ab2 远离分隔部分。 根据本发明，内部宽度和外部宽度ib1-ab1和ib2-ab2 ib1产生的差异在a-t到a + t的间隔中，其中a大于零，t大于a 。