专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20080317392A1 Air purging for a fluid dynamic bearing 有权
标题翻译：空气吹扫用于流体动力轴承
公开(公告)号：US20080317392A1
公开(公告)日：2008-12-25
申请号：US11821900
申请日：2007-06-25
申请人： Anthony J. Aiello , Christopher M. Woldemar , Norbert S. Parsoneault , Alan L. Grantz
发明人： Anthony J. Aiello , Christopher M. Woldemar , Norbert S. Parsoneault , Alan L. Grantz
IPC分类号： F16C32/06
CPC分类号： F16C33/103 , F16C17/107 , F16C33/107 , F16C33/745 , F16C2370/12 , Y10T29/49639 , Y10T29/49826
摘要： A robust spindle motor is provided having improved shock resistance for fluid containment, as well as enhanced air purging characteristics. In an aspect, axial displacement of relatively rotating components is restricted by utilizing a limiter situated adjacent to a limiter bushing forming an axial limiter gap therebetween. A fluid channel, at least partially diverging, extends from a hydrodynamic bearing to the axial limiter gap, and continues to a region beyond the axial limiter gap. In an aspect, an axially diverging slot is situated adjacent to the axial limiter gap. Power is reduced by reducing viscous drag between relatively rotating components, hydrodynamic bearing length is increased, and higher stiffness of the hydrodynamic bearing is provided. Fluid volume may be increased, thereby offsetting fluid evaporation losses and allowing for the use of lower viscosity lubricants.
摘要翻译：提供了一种坚固的主轴电动机，其具有改进的防止流体容纳的抗冲击性，以及增强的空气净化特性。在一个方面，相对旋转部件的轴向位移通过利用与限制器衬套相邻的限制器来限制，该限制器在其间形成轴向限制器间隙。至少部分发散的流体通道从流体动力轴承延伸到轴向限制器间隙，并且继续到超出轴向限制器间隙的区域。在一个方面，轴向发散的狭槽位于轴向限制器间隙附近。通过减少相对旋转部件之间的粘滞阻力来降低动力，提高流体动力轴承长度，提供更高刚度的流体动力轴承。流体体积可能增加，从而抵消流体蒸发损失并允许使用较低粘度的润滑剂。

2. 发明授权

US09644675B2 Folded fluid channel for a fluid dynamic bearing 有权
公开(公告)号：US09644675B2
公开(公告)日：2017-05-09
申请号：US12117619
申请日：2008-05-08
申请人： Lynn B. Le , Alan L. Grantz
发明人： Lynn B. Le , Alan L. Grantz
IPC分类号： F16C32/06 , F16C33/10 , F16C41/00 , F16C17/10
CPC分类号： F16C32/0633 , F16C17/105 , F16C17/107 , F16C33/107 , F16C33/1085 , F16C41/008 , F16C2370/12
摘要： A system and method are provided for sealing a fluid dynamic bearing motor. A first and a second folded fluid channel are shaped for maximizing bearing axial span and establishing angular stiffness, to resist gyroscopic rocking of the facing bearing surfaces. The first folded fluid channel is limited to occupying at least a portion of the same axial space as the bearing. A first and a second fluid sealing system are connected to opposite axial ends of the bearing. The first fluid sealing system forms an active pumping seal to pump fluid during motor rotation. In an aspect, a top cover attached shaft, and a single thrust surface are employed, allowing for a rigid motor structure and power reduction in applications including high rotational speed disc drives. Also, by employing a rigid shaft design, significantly lower amplitude radial vibration responses are exhibited at higher frequencies than prior art motor designs.

3. 发明授权

US07241051B2 Radial capillary seal for fluid dynamic bearing motors 有权
标题翻译：用于流体动力轴承电机的径向毛细管密封
公开(公告)号：US07241051B2
公开(公告)日：2007-07-10
申请号：US11151878
申请日：2005-06-13
申请人： Alan L. Grantz , Raquib U. Khan , Norbert Steven Parsoneault
发明人： Alan L. Grantz , Raquib U. Khan , Norbert Steven Parsoneault
IPC分类号： F16C17/10
CPC分类号： F16C17/105 , F16C17/107 , F16C33/745 , F16C2370/12 , G11B19/2009
摘要： A seal with a primary axis lying in the radial direction so that the fluid bearing is primarily extending in the axial direction between the rotating shaft and surrounding sleeve is disclosed. The capillary seal is positioned with an opening adjacent an end of the fluid bearing gap, and comprises two walls which diverge as they extend radially away from the fluid bearing so that the fluid held in the radial capillary seal is maintained adjacent an end of the gap, while the size of the reservoir defined by the diverging walls provides a large reservoir volume. The seal uses an additional capillary defined by a narrow annulus between the rotating shaft and a seal wall end. The narrow annulus establishes very high shock resistance preventing fluid loss past the outer axial wall of the radially capillary seal, and defines a small surface area from which evaporation can occur.
摘要翻译：公开了一种具有主轴线位于径向方向上的密封件，使得流体轴承主要在轴向方向上在旋转轴和周围套筒之间延伸。毛细管密封件定位成具有邻近流体轴承间隙的端部的开口，并且包括两个壁，当它们从流体轴承径向延伸时分开，使得保持在径向毛细管密封件中的流体保持在间隙的端部附近而由发散壁限定的储存器的尺寸提供了大的储存器容积。密封件使用由旋转轴和密封壁端之间的窄环形物限定的附加毛细管。狭窄的环形区域具有非常高的抗冲击性，可以防止流体通过径向毛细管密封件的外部轴向壁的流体损失，并且限定了可能发生蒸发的小的表面积。

4. 发明授权

US5559651A Magnetic disc storage system with hydrodynamic bearing 失效
公开(公告)号：US5559651A
公开(公告)日：1996-09-24
申请号：US420740
申请日：1995-04-12
申请人： Alan L. Grantz , Wesley R. Clark
发明人： Alan L. Grantz , Wesley R. Clark
IPC分类号： F16C17/10 , G11B17/022 , G11B19/20 , G11B25/04 , G11B33/08 , G11B17/02
CPC分类号： G11B33/08 , G11B17/022 , G11B25/043
摘要： A magnetic disc storage system includes a base and a rotating magnetic disc having an axis of rotation. A transducing head which reads and writes information is positioned proximate the disc. The disc rotates on a rotating member relative to a fixed member which is attached to the base. In one embodiment, the hydrodynamic bearing has a shape which forms a portion of a sphere.

5. 发明授权

US08575880B2 Direct current motor with independently driven and switchable stators 有权
标题翻译：具有独立驱动和可切换定子的直流电机
公开(公告)号：US08575880B2
公开(公告)日：2013-11-05
申请号：US13045482
申请日：2011-03-10
申请人： Alan L. Grantz
发明人： Alan L. Grantz
IPC分类号： H02P6/08 , H02P25/02
CPC分类号： H02P25/021 , H02P6/14 , H02P25/024 , H02P25/188
摘要： An apparatus and method are provided for adjusting torque and speed of a motor, while remaining within the voltage limit of a power supply. The invention provides a brushless direct current motor with independently driven and switchable stators. In an aspect, each stator and the rotor is structured to function as an independent motor separate from another stator and the rotor. A first power electronics directs energy to a first stator, and a second power electronics directs energy to a second stator. A rotor rotates relative to the stators. In an aspect, a commutation electronics determines electrical position of the rotor relative to the stators, and synchronizes current pulses directed to a sequentially selected phase of the stators, to generate a rotating magnetic field that communicates with the rotor. A controller sets the connection of the first power electronics in series or in parallel with the second power electronics.
摘要翻译：提供一种用于在电源的电压限制内保持电动机的转矩和速度的装置和方法。本发明提供一种具有独立驱动和可切换定子的无刷直流电动机。在一个方面，每个定子和转子构造成用作与另一个定子和转子分离的独立电机。第一电力电子装置将能量引导到第一定子，而第二电力电子装置将能量引导到第二定子。转子相对于定子旋转。在一个方面，换向电子装置确定转子相对于定子的电位置，并且使与定子的顺序选择的相位相对应的电流脉冲同步，以产生与转子连通的旋转磁场。控制器将第一电力电子设备与第二电力电子设备串联或并联连接。

6. 发明授权

US08192087B2 Microfabricated fluid dynamic bearing 有权
标题翻译：微型流体动力轴承
公开(公告)号：US08192087B2
公开(公告)日：2012-06-05
申请号：US12473243
申请日：2009-05-27
申请人： Roger L. Hipwell, Jr. , Alan L. Grantz , Dadi Setiadi , Yang Li
发明人： Roger L. Hipwell, Jr. , Alan L. Grantz , Dadi Setiadi , Yang Li
IPC分类号： F16C32/06
CPC分类号： G11B19/2036 , F16C17/105 , F16C33/107 , F16C2370/12
摘要： A fluid dynamic bearing formed by a microelectromechanical systems (MEMS) wafer-level batch-fabrication process is provided. The process results in a high performance and high reliability fluid dynamic bearing having features including higher bearing lifetime at high RPM, improved bearing stiffness, durability and thrust/restoring forces capabilities. The present invention is especially useful with small form factor disc drive memory devices having constraints in motor height, such as a 2.5 inch disc drive, requiring high performance including high rotational speed and large areal density. A sacrificial layer is utilized in the process to simultaneously form symmetrical facing surfaces of relatively rotatable components. The facing surfaces define, therebetween, a desired feature, such as a journal bearing, a thrust bearing, a fluid channel, a fluid reservoir, a capillary seal, pressure generating grooves, and other profile geometries. Such geometry control allows for design freedom in obtaining a desired bearing performance and stiffness.
摘要翻译：提供了由微机电系统（MEMS）晶圆级批量制造工艺形成的流体动力轴承。该过程产生了高性能和高可靠性的流体动力轴承，其特征包括在高转速下具有较高的轴承寿命，改进的轴承刚度，耐用性和推力/恢复力能力。本发明对于具有马达高度限制的小尺寸盘驱动器存储器件是特别有用的，例如2.5英寸盘驱动器，需要包括高旋转速度和大面密度的高性能。在该过程中利用牺牲层以同时形成相对可旋转部件的对称面对表面。相对的表面在它们之间限定期望的特征，例如轴颈轴承，推力轴承，流体通道，流体储存器，毛细管密封件，压力产生槽和其它轮廓几何形状。这种几何控制允许在获得期望的轴承性能和刚度方面的设计自由度。

7. 发明申请

US20120027326A1 FLUID DYNAMIC BEARING MOTOR INCLUDING MOLDED PLASTIC 有权
标题翻译：流体动力轴承电机，包括模压塑料
公开(公告)号：US20120027326A1
公开(公告)日：2012-02-02
申请号：US13271055
申请日：2011-10-11
申请人： Alan L. Grantz , Klaus D. Kloeppel
发明人： Alan L. Grantz , Klaus D. Kloeppel
IPC分类号： F16C32/06
CPC分类号： F16C32/0692 , F16C17/105 , F16C33/1025 , F16C33/20 , F16C33/208 , F16C2208/02 , F16C2208/48 , F16C2220/04 , F16C2370/12 , H02K7/085
摘要： A fluid dynamic bearing motor and method are described, wherein motor components, including complex shaped motor components, are molded of plastic. The molding ensures form control and dimensional control thereby accomplishing design requirements, and eliminating or reducing component costs and component machining. The mold can be shaped to form various motor geometries, thereby eliminating the need for multiple component assembly and related assembly costs. In an aspect, a plastic integral motor hub is formed by injection molding. Alternatively, a plastic motor hub is affixed to a metal sleeve. In another aspect, fluid containment structures are molded into the motor component, reducing the number of components as compared with machined metal components. In a further aspect, bearing structures such as grooves are molded into the motor component, thereby eliminating processes such as electrochemical machining. In yet a further aspect, a plastic hub faces a thrustplate, reducing expensive sleeve machining.
摘要翻译：描述了流体动力轴承电动机和方法，其中包括复杂形状的电动机部件的电动机部件由塑料模制。该模具可确保形状控制和尺寸控制，从而实现设计要求，消除或降低部件成本和部件加工。模具可以成型以形成各种电动机几何形状，从而消除对多个部件组装和相关组装成本的需要。在一方面，通过注射成型形成塑料整体式电动机毂。或者，塑料马达毂固定到金属套筒上。在另一方面，流体容纳结构被模制到马达部件中，与加工金属部件相比减少了部件数量。在另一方面，诸如槽的轴承结构被模制到电动机部件中，从而消除诸如电化学加工的工艺。在另一方面，塑料轮毂面向推力板，减少昂贵的套筒加工。

8. 发明授权

US08033731B2 Fluid dynamic bearing motor having molded plastic 有权
标题翻译：流体动力轴承电机具有模制塑料
公开(公告)号：US08033731B2
公开(公告)日：2011-10-11
申请号：US11975046
申请日：2007-10-17
申请人： Alan L. Grantz , Klaus D. Kloeppel
发明人： Alan L. Grantz , Klaus D. Kloeppel
IPC分类号： F16C32/06
CPC分类号： F16C32/0692 , F16C17/105 , F16C33/1025 , F16C33/20 , F16C33/208 , F16C2208/02 , F16C2208/48 , F16C2220/04 , F16C2370/12 , H02K7/085
摘要： A fluid dynamic bearing motor and method are described, wherein motor components, including complex shaped motor components, are molded of plastic. The molding ensures form control and dimensional control thereby accomplishing design requirements, and eliminating or reducing component costs and component machining. The mold can be shaped to form various motor geometries, thereby eliminating the need for multiple component assembly and related assembly costs. In an aspect, a plastic integral motor hub is formed by injection molding. Alternatively, a plastic motor hub is affixed to a metal sleeve. In another aspect, fluid containment structures are molded into the motor component, reducing the number of components as compared with machined metal components. In a further aspect, bearing structures such as grooves are molded into the motor component, thereby eliminating processes such as electrochemical machining. In yet a further aspect, a plastic hub faces a thrustplate, reducing expensive sleeve machining.
摘要翻译：描述了流体动力轴承电动机和方法，其中包括复杂形状的电动机部件的电动机部件由塑料模制。该模具可确保形状控制和尺寸控制，从而实现设计要求，消除或降低部件成本和部件加工。模具可以成型以形成各种电动机几何形状，从而消除对多个部件组装和相关组装成本的需要。在一方面，通过注射成型形成塑料整体式电动机毂。或者，塑料马达毂固定到金属套筒上。在另一方面，流体容纳结构被模制到马达部件中，与加工金属部件相比减少了部件数量。在另一方面，诸如槽的轴承结构被模制到电动机部件中，从而消除诸如电化学加工的工艺。在另一方面，塑料轮毂面向推力板，减少昂贵的套筒加工。

9. 发明授权

US07758246B2 Air purging for a fluid dynamic bearing 有权
标题翻译：空气吹扫用于流体动力轴承
公开(公告)号：US07758246B2
公开(公告)日：2010-07-20
申请号：US11821900
申请日：2007-06-25
申请人： Anthony J. Aiello , Christopher M. Woldemar , Norbert S. Parsoneault , Alan L. Grantz
发明人： Anthony J. Aiello , Christopher M. Woldemar , Norbert S. Parsoneault , Alan L. Grantz
IPC分类号： F16C32/06 , G11B17/04 , G11B17/02
CPC分类号： F16C33/103 , F16C17/107 , F16C33/107 , F16C33/745 , F16C2370/12 , Y10T29/49639 , Y10T29/49826
摘要： A robust spindle motor is provided having improved shock resistance for fluid containment, as well as enhanced air purging characteristics. In an aspect, axial displacement of relatively rotating components is restricted by utilizing a limiter situated adjacent to a limiter bushing forming an axial limiter gap therebetween. A fluid channel, at least partially diverging, extends from a hydrodynamic bearing to the axial limiter gap, and continues to a region beyond the axial limiter gap. In an aspect, an axially diverging slot is situated adjacent to the axial limiter gap. Power is reduced by reducing viscous drag between relatively rotating components, hydrodynamic bearing length is increased, and higher stiffness of the hydrodynamic bearing is provided. Fluid volume may be increased, thereby offsetting fluid evaporation losses and allowing for the use of lower viscosity lubricants.
摘要翻译：提供了一种坚固的主轴电动机，其具有改进的防止流体容纳的抗冲击性，以及增强的空气净化特性。在一个方面，相对旋转部件的轴向位移通过利用与限制器衬套相邻的限制器来限制，该限制器在其间形成轴向限制器间隙。至少部分发散的流体通道从流体动力轴承延伸到轴向限制器间隙，并且继续到超出轴向限制器间隙的区域。在一个方面，轴向发散的狭槽位于轴向限制器间隙附近。通过减少相对旋转部件之间的粘滞阻力来降低动力，提高流体动力轴承长度，提供更高刚度的流体动力轴承。流体体积可能增加，从而抵消流体蒸发损失并允许使用较低粘度的润滑剂。

10. 发明申请

US20090103839A1 Fluid dynamic bearing motor having molded plastic 有权
标题翻译：流体动力轴承电机具有模制塑料
公开(公告)号：US20090103839A1
公开(公告)日：2009-04-23
申请号：US11975046
申请日：2007-10-17
申请人： Alan L. Grantz , Klaus D. Kloeppel
发明人： Alan L. Grantz , Klaus D. Kloeppel
IPC分类号： F16C32/06 , F16C33/64
CPC分类号： F16C32/0692 , F16C17/105 , F16C33/1025 , F16C33/20 , F16C33/208 , F16C2208/02 , F16C2208/48 , F16C2220/04 , F16C2370/12 , H02K7/085
摘要： A fluid dynamic bearing motor and method are described, wherein motor components, including complex shaped motor components, are molded of plastic. The molding ensures form control and dimensional control thereby accomplishing design requirements, and eliminating or reducing component costs and component machining. The mold can be shaped to form various motor geometries, thereby eliminating the need for multiple component assembly and related assembly costs. In an aspect, a plastic integral motor hub is formed by injection molding. Alternatively, a plastic motor hub is affixed to a metal sleeve. In another aspect, fluid containment structures are molded into the motor component, reducing the number of components as compared with machined metal components. In a further aspect, bearing structures such as grooves are molded into the motor component, thereby eliminating processes such as electrochemical machining. In yet a further aspect, a plastic hub faces a thrustplate, reducing expensive sleeve machining.
摘要翻译：描述了流体动力轴承电动机和方法，其中包括复杂形状的电动机部件的电动机部件由塑料模制。该模具可确保形状控制和尺寸控制，从而实现设计要求，消除或降低部件成本和部件加工。模具可以成型以形成各种电动机几何形状，从而消除对多个部件组装和相关组装成本的需要。在一方面，通过注射成型形成塑料整体式电动机毂。或者，塑料马达毂固定到金属套筒上。在另一方面，流体容纳结构被模制到马达部件中，与加工金属部件相比减少了部件数量。在另一方面，诸如槽的轴承结构被模制到电动机部件中，从而消除诸如电化学加工的工艺。在另一方面，塑料轮毂面向推力板，减少昂贵的套筒加工。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式