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公开(公告)号：US06753636B2
公开(公告)日：2004-06-22
申请号：US09860822
申请日：2001-05-18
申请人： Thilo Rehm , Jörg Hoffmann
发明人： Thilo Rehm , Jörg Hoffmann
IPC分类号： H02K112
CPC分类号： H02K1/187 , G11B19/2009 , H02K5/08 , H02K5/1737 , Y10T29/49009
摘要： The invention related to a spindle motor for hard disk drives with improved running accuracy where the sheet metal package or the complete stator consisting of sheet metal package and windings is encompassed by a centering casing of plastic, which is preferably applied by means of an injection molding operation. Depending on the design of the spindle motor the centering casing can be centered on the stationary shaft and/or on the outer rings/inner raceways pertaining to the sets of roolling bodies. Furthermore, a stator without centering casing is described whose sheet metal package is centered directly on the outer rings/inner raceways.
摘要翻译： 本发明涉及一种用于硬盘驱动器的主轴电动机，其具有改进的运行精度，其中金属板包装或由金属板包装和绕组组成的完整定子由塑料的定心壳包围，其优选地通过注塑成型 操作。 根据主轴电动机的设计，定心壳体可以在固定轴上和/或与套筒组的外圈/内滚道对中。 此外，描述了一种没有定中心的定子，其金属片包装直接位于外环/内滚道上。
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公开(公告)号：US06543781B1
公开(公告)日：2003-04-08
申请号：US09676543
申请日：2000-09-29
申请人： Thilo Rehm , Jörg Hoffmann
发明人： Thilo Rehm , Jörg Hoffmann
IPC分类号： F16J1543
CPC分类号： F16C33/765 , F16C2370/12 , G11B19/2009 , H02K5/124 , H02K5/1735 , H02K5/1737
摘要： A spindle-drive motor for hard drives having a baseplate, a shaft and one or more bearings for rotational mounting of a rotationally driven rotor, with at least one magnetic fluid seal arranged between the stationary part and the rotating part of the spindle-drive motor. The seal is formed of an upper and a lower yoke lamination and a magnet disk arranged between the yoke laminations, where a concentric chamber is formed so that it is open toward the inside on one side to hold a magnetically conducting fluid. A flux concentrating lamination extends into this chamber. In one embodiment of this invention, the flux concentrating lamination is in direct or indirect contact with one end face of the inner bearing ring of the bearing, while the outer part of the magnetic fluid seal is in direct or indirect contact with the end face of the outer bearing ring of the bearing. In another embodiment, the flux concentrating lamination on the inside is in direct or indirect contact with a radial reference shoulder of the shaft.
摘要翻译： 一种用于硬盘驱动器的主轴驱动电动机，其具有基板，轴和用于旋转驱动的转子的旋转安装的一个或多个轴承，其中至少一个磁性流体密封件布置在主轴驱动电机的静止部分和旋转部分之间 。 密封件由上下轭铁芯和磁轭构成，磁轭布置在磁轭叠片之间，其中形成同心腔，使得其在一侧朝向内侧开口以保持导磁流体。 助焊剂浓缩层压延伸到该室中。 在本发明的一个实施例中，集流层压与轴承的内轴承环的一个端面直接或间接接触，而磁流体密封件的外部部分直接或间接地与轴承的端面接触 轴承的外轴承圈。 在另一个实施例中，内侧的助熔剂层压与轴的径向基准肩直接或间接接触。
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公开(公告)号：US08182154B2
公开(公告)日：2012-05-22
申请号：US12080454
申请日：2008-04-03
申请人： Martin Bauer , Jurgen Fleig , Stefan Schwamberger , Martin Engesser , Igor Ross , Thilo Rehm
发明人： Martin Bauer , Jurgen Fleig , Stefan Schwamberger , Martin Engesser , Igor Ross , Thilo Rehm
CPC分类号： F16C17/107 , F16C33/107 , F16C33/1085 , F16C33/74 , F16C2370/12
摘要： The invention relates to a fluid dynamic bearing system that comprises at least one stationary part that has a shaft and two bearing plates disposed on the shaft at a mutual spacing, and at least one rotating part that is supported so as to rotate about a rotational axis with respect to the stationary part, and comprises a bearing bush and a sleeve enclosing the bearing bush. A bearing gap filled with bearing fluid is provided between the parts and at least one sealing gap for sealing the bearing gap that extends concentric to the rotational axis. The bearing comprises at least one fluid dynamic radial bearing and two fluid dynamic axial bearings and at least one recirculation channel that connects the two axial bearing regions to each other. According to the invention, the largest radial diameter of the recirculation channel is greater than or equal to the largest diameter of the sealing gap, and the smallest radial diameter of the recirculation channel is greater than or equal to the largest diameter of an adjacent bearing plate. Moreover, additional and effective deairing of the recirculation channel is effected by a venting device. To realize improved equilibrium of pressure in the bearing gap and improved retention of the bearing fluid, the sealing gaps can be inclined, at least in sections, at an angle α, β with respect to the rotational axis, wherein the angles may have different sizes.
摘要翻译： 本发明涉及一种流体动力轴承系统，其包括至少一个固定部件，该固定部件具有轴和两个以相互间隔设置在轴上的支承板，以及至少一个旋转部件，其被支撑成围绕旋转轴线 相对于固定部分，并且包括轴承衬套和包围轴承衬套的套筒。 填充有轴承流体的轴承间隙设置在部件和至少一个密封间隙之间，用于密封与旋转轴线同心延伸的轴承间隙。 轴承包括至少一个流体动态径向轴承和两个流体动态轴向轴承以及将两个轴向轴承区域彼此连接的至少一个再循环通道。 根据本发明，再循环通道的最大径向直径大于或等于密封间隙的最大直径，并且再循环通道的最小径向直径大于或等于相邻承载板的最大直径 。 此外，再循环通道的附加和有效的脱气由排气装置实现。 为了实现轴承间隙中的压力平衡改善和轴承流体的保持性得到改善，密封间隙可以至少以剖面形式倾斜角度α和bgr; 相对于旋转轴线，其中角度可以具有不同的尺寸。
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公开(公告)号：US07791833B2
公开(公告)日：2010-09-07
申请号：US11182598
申请日：2005-07-15
申请人： Thilo Rehm , Claudia Hoffmann
发明人： Thilo Rehm , Claudia Hoffmann
IPC分类号： G11B17/02
CPC分类号： H02K5/1675 , F16C17/102 , F16C2370/12
摘要： The invention relates to a spindle motor having a deep-drawn baseplate and an aperture to receive and secure a bearing system to rotatably support a rotor. To avoid having to machine the bearing receiving portion of the baseplate in a complex process, the invention provides for a separate bush to be disposed in the aperture in the baseplate to receive and secure the bearing system. Compared to the baseplate, this bush can be worked in a simpler and more cost-saving process.
摘要翻译： 本发明涉及一种主轴电动机，其具有深拉底座和用于接收和固定轴承系统以可旋转地支撑转子的孔。 为了避免在复杂的过程中加工基板的轴承接收部分，本发明提供了一个单独的衬套，其被布置在基板的孔中以接收和固定轴承系统。 与基板相比，这种灌木可以在更简单和更节省成本的过程中进行。
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5.发明申请Fluid dynamic bearing system and a spindle motor having a bearing system of this kind 审中-公开流体动力轴承系统和具有这种轴承系统的主轴电机公开(公告)号：US20080101739A1
公开(公告)日：2008-05-01
申请号：US11975431
申请日：2007-10-19
CPC分类号： G11B19/2036 , F16C17/107 , F16C33/745 , F16C2370/12 , H02K5/1675
摘要： The invention relates to a fluid dynamic bearing system having at least one stationary (10) and at least one moving bearing part (22) that are rotatable about a common rotational axis (16) with respect to one another and form a bearing gap (14) filled with a bearing fluid between associated bearing surfaces, wherein a sealing gap (38) adjoins one end of the bearing gap, the sealing gap being disposed between a sleeve surface (40) of the stationary bearing part (10) and an opposing sleeve surface (42) of the moving bearing part (22) and comprising a radial section and an axial section and being at least partially filled with bearing fluid, wherein in the region of the axial section of the sealing gap (38), the sleeve surface (40) of the stationary bearing part (10) forms an acute angle a with the rotational axis (16) and the sleeve surface (42) of the moving bearing part (12, 22) forms an acute angle β with the rotational axis (16), wherein for the angles the condition α≧β>0° applies, and the difference B2 between the smallest radius r2 of the sleeve surface (42) of the moving bearing part (22) adjacent to the sealing gap (38) and the largest radius r1 of the sleeve surface (40) of the stationary bearing part (10) adjacent to the sealing gap (38) is less than or equal to the smallest width B1 of the axial section of the sealing gap (38), and that B1≦2 B2 further applies.
摘要翻译： 本发明涉及一种流体动力轴承系统，其具有至少一个固定件（10）和至少一个可相对于共同的旋转轴线（16）相对于彼此旋转的运动支承部件（22），并形成轴承间隙（14） ），其中密封间隙（38）与所述轴承间隙的一端相邻，所述密封间隙设置在所述固定轴承部件（10）的套筒表面（40）和相对的套筒 （22）的表面（42）并且包括径向部分和轴向部分并且至少部分地填充有轴承流体，其中在密封间隙（38）的轴向部分的区域中，套筒表面 所述固定轴承部件（10）的所述旋转轴线（40）与所述旋转轴线（16）形成锐角α，并且所述运动轴承部件（12,22）的套筒表面（42）与所述旋转轴线形成锐角β 16），其中对于 并且运动轴承部件的套筒表面（42）的最小半径r 2 2 之间的差B S 2 邻近密封间隙（38）的固定轴承部分（10）的套筒表面（40）的最大半径r 1> 1邻近密封间隙（38）的最小半径r 1是小于或等于 等于密封间隙（38）的轴向部分的最小宽度B 1> 1，并且还进一步施加B1 <= 2 B 2 。
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公开(公告)号：US07345392B2
公开(公告)日：2008-03-18
申请号：US11092299
申请日：2005-03-29
申请人： Martin Hafen , Joerg Hoffmann , Andreas Kull , Tobias Kirchmeier , Rudolf Neumann , Thilo Rehm , Olaf Winterhalter
发明人： Martin Hafen , Joerg Hoffmann , Andreas Kull , Tobias Kirchmeier , Rudolf Neumann , Thilo Rehm , Olaf Winterhalter
CPC分类号： H02K5/1675 , F16C17/102 , F16C2370/12
摘要： The invention relates to a spindle motor having a hydrodynamic bearing system, particularly to drive platters in a hard disk drive, the platters being disposed on a rotor, and the bearing system being formed by a bearing sleeve arranged on a baseplate and a shaft rotatably supported in an opening in the bearing sleeve and at least one thrust plate connected to the shaft. A liquid lubricant is filled into a bearing gap formed between the shaft, the thrust plate and the bearing sleeve. The invention is characterized in that the thrust plate rests directly against the rotor and is accommodated in an annular recess in the bearing sleeve facing the rotor.
摘要翻译： 本发明涉及一种具有流体动力轴承系统的主轴电动机，特别是用于驱动硬盘驱动器中的盘片，盘片设置在转子上，并且该轴承系统由布置在基板上的轴承套筒和可旋转地支撑的轴 在轴承套筒中的一个开口中，以及至少一个连接到轴的止推板。 液体润滑剂被填充到形成在轴，推力板和轴承套之间的轴承间隙中。 本发明的特征在于推力板直接靠在转子上并且被容纳在面向转子的轴承套筒中的环形凹部中。
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7.发明授权Fluid dynamic bearing system and a spindle motor having this kind of bearing system 有权流体动力轴承系统和具有这种轴承系统的主轴电机公开(公告)号：US09214182B2
公开(公告)日：2015-12-15
申请号：US13104205
申请日：2011-05-10
申请人： Thilo Rehm , Martin Bauer
发明人： Thilo Rehm , Martin Bauer
CPC分类号： G11B19/2036 , F16C17/107 , F16C33/103 , F16C33/107 , F16C33/745 , F16C2370/12 , H02K5/1675
摘要： The invention relates to a fluid dynamic bearing system having a bearing bush and a shaft that are rotatable with respect to one another about a common rotational axis and form a bearing gap filled with bearing fluid between associated bearing surfaces. The bearing surfaces form at least one fluid dynamic radial bearing. A rotor component is disposed on the shaft. A stopper ring is disposed on the shaft or on the rotor component and adjoins the bearing bush, wherein a gap is formed between the mutually facing surfaces of the bearing bush and the stopper component that is filled with a bearing fluid and connected to the bearing gap and extends substantially in a radial direction. According to the invention, the surfaces of the bearing bush and/or the stopper component are formed such that the gap is tapered, narrowing radially outwards. Moreover, a recirculation channel may be provided in the bearing bush that connects a gap region between the bearing gap and the sealing gap radially outside the axial bearing to a gap region radially outside the stopper component.
摘要翻译： 本发明涉及一种具有轴承衬套和轴的流体动力轴承系统，所述轴承衬套和轴可相对于彼此围绕公共旋转轴线旋转并形成在相关联的轴承表面之间填充有轴承流体的轴承间隙。 轴承表面形成至少一个流体动态径向轴承。 转子部件设置在轴上。 止动环设置在轴上或转子部件上并与轴承衬套相邻，其中在轴承衬套的相互面对的表面和填充有轴承流体的止动部件之间形成有间隙并与轴承间隙连接 并且基本上在径向方向上延伸。 根据本发明，轴承衬套和/或止动部件的表面形成为使得间隙渐缩，径向向外变窄。 此外，可以在轴承衬套中设置再循环通道，该轴承衬套将轴承间隙和轴向轴承径向外侧的密封间隙之间的间隙区域连接到止动部件的径向外侧的间隙区域。
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公开(公告)号：US20090080819A1
公开(公告)日：2009-03-26
申请号：US12283120
申请日：2008-09-09
申请人： Thilo Rehm
发明人： Thilo Rehm
IPC分类号： F16C17/10
CPC分类号： G11B19/2036 , F16C17/107 , F16C33/107 , F16C33/1085 , F16C2370/12
摘要： The invention relates to a fluid dynamic bearing, particularly for rotatably supporting a spindle motor comprising: a first bearing part (16) having a substantially cylindrical bore, a substantially cylindrical second bearing part (20) that is disposed in the bore of the first bearing part (16) and rotatably supported about a rotational axis (50) with respect to the first bearing part, the bearing parts having associated radial bearing faces and axial bearing faces, or tapered bearing faces, a bearing gap (22) filled with bearing fluid that separates the mutually facing surfaces of the two bearing parts (16, 20) from one another and has an open end and a closed end remote from the open end, a sealing gap (40) that is disposed between an outside circumference of the first bearing part (16) and an inside circumference of a part connected to the second bearing part (20) and connected directly or indirectly to the bearing gap (22), a recirculation channel (44) that is disposed in the first bearing part (16) and connects the closed end of the bearing gap (22) directly or indirectly to the open end of the bearing gap, wherein the recirculation channel (44) is connected to the sealing gap (40) at the outside circumference of the first bearing part
摘要翻译： 本发明涉及一种特别用于可旋转地支撑主轴电动机的流体动力轴承，包括：具有基本上圆柱形的孔的第一轴承部分（16），设置在第一轴承的孔中的大致圆柱形的第二轴承部分（20） 部分（16）并且相对于第一轴承部分围绕旋转轴线（50）可旋转地支撑，所述轴承部件具有相关联的径向支承面和轴向支承面或锥形支承面，轴承间隙（22）填充有轴承流体 其将所述两个轴承部分（16,20）的相互面对的表面彼此分隔开并具有远离所述开口端的开口端和闭合端;密封间隙（40），其设置在所述第一 轴承部分（16）和连接到第二轴承部分（20）并且直接或间接连接到轴承间隙（22）的部分的内圆周;再循环通道（44），其布置在第一 轴承部分（16）并且将轴承间隙（22）的封闭端直接或间接地连接到轴承间隙的开口端，其中再循环通道（44）在外圆周处连接到密封间隙（40） 第一个轴承部分
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公开(公告)号：US06945696B2
公开(公告)日：2005-09-20
申请号：US10621756
申请日：2003-07-17
申请人： Ralf Dittes , Helmut Hueneke , Joerg Hoffman , Jürgen Oelsch , Thilo Rehm , Mathias Wildpreth , Olaf Winterhalter
发明人： Ralf Dittes , Helmut Hueneke , Joerg Hoffman , Jürgen Oelsch , Thilo Rehm , Mathias Wildpreth , Olaf Winterhalter
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。
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公开(公告)号：US20090102300A1
公开(公告)日：2009-04-23
申请号：US11975433
申请日：2007-10-19
CPC分类号： H02K7/086 , F16C17/107 , F16C33/107 , F16C33/74 , F16C2370/12
摘要： The invention relates to a spindle motor for a hard disk drive comprising a baseplate (1), a shaft (2) fixedly connected to the baseplate (1), a thrust plate (3) fixedly connected to the free end of the shaft, a bearing bush (4) disposed about the shaft (2) and the thrust plate (3) and rotatably supported with respect to these components, a bearing gap (5) that is provided between the adjoining surfaces of the shaft (2), the bearing bush (4) and the thrust plate (3), at least one radial bearing (6; 7) formed by the adjoining surfaces of the shaft (2) and the bearing bush (4), an axial bearing (8) formed by the adjoining surfaces of the thrust plate (3) and the bearing bush (4), an annular rotor component (9) connected to the bearing bush (4), and an electromagnetic drive system having a rotor magnet (11) fixed to a rotating component and a stator arrangement (12) disposed on the baseplate (1) opposite the rotor magnet (11).
摘要翻译： 本发明涉及一种用于硬盘驱动器的主轴电动机，其包括基板（1），固定地连接到基板（1）的轴（2），固定地连接到轴的自由端的止推板（3） 设置在轴（2）和止推板（3）周围并相对于这些部件可旋转地支撑的轴承衬套（4），设置在轴（2）的相邻表面之间的轴承间隙（5） 衬套（4）和止推板（3），由轴（2）和轴承衬套（4）的相邻表面形成的至少一个径向轴承（6; 7），由轴 推力板（3）和轴承衬套（4）的邻接表面，连接到轴承衬套（4）的环形转子部件（9）和具有固定到旋转部件上的转子磁体（11）的电磁驱动系统 以及设置在与转子磁体（11）相对的基板（1）上的定子装置（12）。
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