DISK DRIVE MOTER WITH CONSTANT PRESSURE MAGNETICALLY PRELOADED FLUID DYNAMIC BEARING
    71.
    发明申请
    DISK DRIVE MOTER WITH CONSTANT PRESSURE MAGNETICALLY PRELOADED FLUID DYNAMIC BEARING 审中-公开
    磁力驱动电机,恒定压力磁性流体动力轴承

    公开(公告)号:WO2003079348A1

    公开(公告)日:2003-09-25

    申请号:PCT/US2003/007531

    申请日:2003-03-11

    Abstract: The shaft may be supported for rotation by a conical bearing rotating within a sleeve. To prevent misalignment of the rotor and stator as the motor heats up and fluid viscosity changes, a magnetic preload is established; in a preferred embodiment, the magnetic preload is achieved using a magnetic back iron aligned with the stator magnet, the magnetic back iron being supported from the base. The shaft may further include a lower journal bearing for maintaining radial alignment and/or stiffness. A shaft may be supported for rotation relative to a sleeve by a combination of journal bearing and thrust bearing whose gaps are connected and grooved to cooperate. The bearing system includes a magnetic preload at the end of the shaft distal from the journal bearing/thrust bearing combination, the magnetic force balancing the spiral groove thrust bearing to maintain the bearing support for the shaft and the load (including hub and disc) that it supports. Further, the journal bearing balances against the thrust bearing so that as fluid is drawn further into the thrust bearing, it is withdrawn from the journal bearing to reduce the working area of the journal bearing. A reservoir terminating in a capillary seal also provided on the far side of the thrust bearing from the journal bearing. This design allows the journal bearing to drain itself as the thrust bearing spins up and its pressure increases so that the pressure of the journal bearing matches the thrust bearing.

    Abstract translation: 该轴可以由在套筒内旋转的锥形轴承支撑以便旋转。 为了防止电机加热和流体粘度变化时转子和定子的不对准,建立磁性预载荷; 在优选实施例中,使用与定子磁体对准的磁性后铁实现磁性预载荷,磁性后铁从基座支撑。 轴可以进一步包括用于保持径向对准和/或刚度的下轴颈轴承。 轴可以通过轴颈轴承和推力轴承的组合而被支撑以相对于套筒旋转,其间隙被连接并开槽以配合。 轴承系统包括远离轴颈轴承/推力轴承组合的轴末端的磁力预载荷,平衡螺旋槽推力轴承的磁力,以保持轴和轴承(包括轮毂和圆盘)的载荷, 它支持。 此外,轴颈轴承与止推轴承相平衡,以便当流体进一步拉入推力轴承时,它从轴颈轴承上退出以减小轴颈轴承的工作面积。 终止于毛细管密封件的储存器也设置在止推轴承的远侧与轴颈轴承。 这种设计允许轴颈轴承随着推力轴承旋转而自身排放,其压力增加,使得轴颈轴承的压力与推力轴承匹配。

    SINGLE THRUST BEARING FLUID DYNAMIC BEARING MOTOR
    72.
    发明申请
    SINGLE THRUST BEARING FLUID DYNAMIC BEARING MOTOR 审中-公开
    单轴承流体动力轴承电机

    公开(公告)号:WO2003079347A1

    公开(公告)日:2003-09-25

    申请号:PCT/US2003/007434

    申请日:2003-03-12

    Abstract: A typical dynamic bearing design comprises a ring shaped or circular thrust plate mounted at or near the end of a shaft, the shaft defining together with a surrounding sleeve a journal bearing by providing grooves on only one of the two surfaces facing the gap between the shaft and sleeve. On the ring shaped thrust plate supported by the shaft, the traditional upward thrust bearing defined between the lower face of the thrust plate and the facing surface of the sleeve is maintained; but no grooves are on the surface of the thrust plate distant from the shaft and a facing counterplate surface. Further, the journal bearing is defined to have an asymmetry so that a bias force pressure along the surface of the shaft toward the thrust plate is established. The combination of the journal groove asymmetry pumping action toward the shoulder or thrust plate, together with the single grooved thrust bearing, is sufficient to establish a constant pressure between the distal surface of the thrust plate and the facing counterplate, as well as between the groove thrust plate and the facing shoulder surface.

    Abstract translation: 典型的动态轴承设计包括安装在轴的端部或附近的环形或圆形推力板,轴与周围的套筒一起定义轴颈轴承,通过仅在面对轴之间的间隙的两个表面中的一个表面上提供凹槽 和袖子。 在由轴支撑的环形止推板上,保持推力板的下表面和套筒的相对表面之间限定的传统向上推力轴承; 但是推力板的表面上没有凹槽远离轴和面对的对板表面。 此外,轴颈轴承被限定为具有不对称性,使得沿着轴的表面朝推力板的偏压力建立。 轴颈凹槽不对称泵送作用朝向肩部或推力板与单槽推力轴承的组合足以在推力板的远端表面和面向对置板之间以及在凹槽之间建立恒定的压力 推力板和面对的肩部表面。

    ELEKTRONISCH KOMMUTIERTER MOTOR
    73.
    发明申请
    ELEKTRONISCH KOMMUTIERTER MOTOR 审中-公开
    电子换向电机

    公开(公告)号:WO2003042999A1

    公开(公告)日:2003-05-22

    申请号:PCT/DE2002/002365

    申请日:2002-06-29

    CPC classification number: H02P6/18 G11B19/2009

    Abstract: Die Erfindung betrifft einen elektronisch kommutierten Motor mit einer Anzahl (n) von Phasen (Ph1 bis Phn), die über Leistungshalbleiterschalter (T1 bis Tn) in einem Kommutierungszyklus von einem Mikrocontroller μC bestrombar sind, wobei dem Mikrocontroller μC eine Solldrehzahl (n soll ) vorgebbar ist, aus der er die zugehörigen Kommutierungsfrequenz errechnet und wobei an den Phasen (Ph1 bis Phn) des Motors Steuersignale für die Istdrehzahl abgreifbar sind, mit deren Hilfe der Mikrocontroller μC die Istdrehzahl auf die Solldrehzahl (n soll ) nachregelt. Ist nach der Erfindung vorgesehen, dass zumindest an einer Phase (Ph1) der am Ende der Bestromung beim Erreichen der Sättigung auftretende Stromanstieg (di/dt) als Steuersignal für den Mikrocontroller μC auswertbar ist und dass der Zeitabstand (T') dieser Steuersignale (di/dt) im Mikrocontroller μC zur Nachregelung verwendet ist, dann kann der maximal mögliche Kommutierungswinkel ausgenutzt und die maximal mögliche Leistung des Motors erreicht werden (Fig. 1) .

    Abstract translation: 本发明涉及一种具有相(pH为1至pH n),其功率半导体开关(T1至Tn)中的微控制器亩换向通电℃的多个(n个)的电子换向电动机,其中微控制器亩℃的目标转速(n中设定) 可以是预定的,从它计算出发动机的相关联的换向,并且其中用于所述实际转速的控制信号可以在相拾取关闭(PH1至PHN),与微控制器亩C的实际速度的援助的目标转速(n中设定)重新调整。 根据本发明所提供的是在达到饱和电流上升发生在电流供给的端部至少在一个相(PH1)(di / dt的)C被评估为用于微控制器亩的控制信号,并且这些控制信号的时间间隔(T“)( 的di / dt)是在微控制器亩下调整所使用的,则最大可能的换向,可被利用,并且可以实现电动机的最大可能的功率(图1)。

    SPINDELMOTOR FÜR FESTPLATTENLAUFWERKE MIT HYDRODYNAMISCHER LAGERANORDNUNG
    74.
    发明申请
    SPINDELMOTOR FÜR FESTPLATTENLAUFWERKE MIT HYDRODYNAMISCHER LAGERANORDNUNG 审中-公开
    主轴电动机,很难与液体动压轴承安排DRIVES

    公开(公告)号:WO2002071402A1

    公开(公告)日:2002-09-12

    申请号:PCT/EP2002/002051

    申请日:2002-02-27

    Inventor: KULL, Andreas

    Abstract: Die Erfindung betrifft einen Spindelmotor für Festplattenlaufwerke mit hydrodynamischer Lageranordnung, mit einem Stator und einem eine oder mehrere Speicherplatten tragenden Rotor, wobei die Lageranordnung eine Welle, eine Buchse und eine mit der Welle drehfest verbundene Druckscheibe umfasst, wobei die Welle und die Druckscheibe relativ zur Buchse rotieren. Die Erfindung zeichnet sich dadurch aus, dass die Druckscheibe im Bereich der Längsmitte der Welle angeordnet ist. Dadurch vergrößert sich die Spannweite, d.h. die axiale Ausdehnung der Lageranordnung und es ergibt sich ein verbessertes Schwingungsverhalten des Lagers und eine höhere Laufstabilität.

    Abstract translation: 本发明涉及一种主轴电机用于与动压轴承组件的硬盘驱动器,具有一个定子和一个或多个存储盘的轴承转子,所述轴承组件包括轴,衬套和一个与轴的旋转固定地连接压力盘,其中,所述轴和相对于套筒的止推垫圈 旋转。 本发明的特征在于,所述压力盘被布置在所述轴的纵向中心的区域中。 因此,跨度增大,也就是说, 轴承装置的轴向延伸并且它导致轴承的一种改进的振动特性,和更高的行驶稳定性。

    DEVICE FOR SCANNING AN ELECTROMAGNETICALLY SUSPENDED INFORMATION CARRIER
    75.
    发明申请
    DEVICE FOR SCANNING AN ELECTROMAGNETICALLY SUSPENDED INFORMATION CARRIER 审中-公开
    用于扫描电磁暂停信息载体的装置

    公开(公告)号:WO0249012A2

    公开(公告)日:2002-06-20

    申请号:PCT/EP0113814

    申请日:2001-11-26

    Abstract: The invention relates to a device for reading and/or writing a disc-shaped information carrier (17), which comprises a support element (25) of a magnetizable material along its circumference. The device comprises an electromagnetic unit (27) for co-operation with the support element and a scanning unit (23) for reading and/or writing the information carrier. By co-operation between the electromagnetic unit and the support element, the information carrier can be rotated about an axis of rotation (73) and positioned with respect to the scanning unit (23) in five degrees of freedom, i.e. in all degrees of freedom except the rotational degree of freedom around the axis of rotation. According to the invention, the electromagnetic unit (27) comprises a single pair of rows (29, 31) of electromagnets (33, 35), which rows are arranged, along an X-axis perpendicular to the axis of rotation (73), on both sides of the information carrier. The electromagnetic unit (27) further comprises a first pair of electromagnets (37, 39) and a second pair of electromagnets (41, 43) which are diametrically arranged with respect to each other, viewed in a middle position of the information carrier (17) along the X-axis and viewed along a Y-axis perpendicular to the X-axis and the axis of rotation, the magnets of the first and the second pair being arranged on both sides of the information carrier, and the magnetic poles (69, 71) of the electromagnets of each pair being arranged at equal distances from the X-axis and, in each position of the information carrier along the X-axis, on one side of a magnetic point of application (M) of the support element. Thus, the electromagnetic unit has a comparatively simple construction and comprises a limited number of electromagnets, so that also the control unit, which is necessary to control the electromagnetic forces of the electromagnets, is simplified.

    Abstract translation: 本发明涉及一种用于读取和/或写入盘形信息载体(17)的装置,该装置包括沿其圆周的可磁化材料的支撑元件(25)。 该装置包括用于与支撑元件协作的电磁单元(27)和用于读取和/或写入信息载体的扫描单元(23)。 通过电磁单元和支撑元件之间的协作,信息载体可围绕旋转轴线(73)旋转并相对于扫描单元(23)以五个自由度即所有自由度 除了围绕旋转轴线的旋转自由度。 根据本发明,电磁单元(27)包括沿着与旋转轴线(73)垂直的X轴布置的一排电磁体​​(33,35)的一对排(29,31) 在信息载体的两边。 电磁单元(27)还包括第一对电磁体(37,39)和第二对电磁体(41,43),其在信息载体(17)的中间位置相对于彼此直径布置 ),并且沿着与X轴和旋转轴线垂直的Y轴观察,第一和第二对的磁体被布置在信息载体的两侧,并且磁极(69 每一对的电磁体71,110被布置在与X轴相等的距离处,并且在信息载体的沿着X轴的每个位置中,在支撑元件的施加磁点(M)的一侧 。 因此,电磁单元具有相对简单的结构,并且包括有限数量的电磁体,从而也简化了控制电磁体的电磁力所必需的控制单元。

    DISC DRIVE SPINDLE MOTOR HAVING REDUCED ACOUSTIC NOISE
    76.
    发明申请
    DISC DRIVE SPINDLE MOTOR HAVING REDUCED ACOUSTIC NOISE 审中-公开
    DISC驱动主轴电机具有降低的声学噪音

    公开(公告)号:WO0229803A3

    公开(公告)日:2002-06-13

    申请号:PCT/US0129988

    申请日:2001-09-25

    CPC classification number: H02K5/24 F16C17/107 G11B19/2009 H02K5/1677

    Abstract: A disc drive spindle motor for reducing the idle noise of a disc drive includes a stator having a first cylindrical surface for contacting a motor mount of the spindle motor. The motor mount includes a second cylindrical surface for contacting only a portion of the first cylindrical surface of the stator to reduce the transmission of vibrations from the stator to a base plate of the disc drive. The motor mount may be attached to a base plate of the disc drive when the spindle motor is formed separately from the disc drive. Alternatively, the motor mount may be formed integrally with the base plate of the disc drive.

    Abstract translation: 用于降低磁盘驱动器的空转噪声的磁盘驱动器主轴电机包括具有用于接触主轴电机的电机支架的第一圆柱表面的定子。 马达安装件包括用于仅接触定子的第一圆柱形表面的一部分的第二圆柱形表面,以减少来自定子的振动传递到磁盘驱动器的基板。 当主轴电机与磁盘驱动器分开形成时,电机支架可以连接到磁盘驱动器的底板上。 或者,马达座可以与磁盘驱动器的底板一体形成。

    DISC DRIVE SPINDLE MOTOR HAVING REDUCED ACOUSTIC NOISE
    77.
    发明申请
    DISC DRIVE SPINDLE MOTOR HAVING REDUCED ACOUSTIC NOISE 审中-公开
    DISC驱动主轴电机具有减少的声音噪声

    公开(公告)号:WO02029803A2

    公开(公告)日:2002-04-11

    申请号:PCT/US2001/029988

    申请日:2001-09-25

    CPC classification number: H02K5/24 F16C17/107 G11B19/2009 H02K5/1677

    Abstract: A disc drive spindle motor for reducing the idle noise of a disc drive includes a stator having a first cylindrical surface for contacting a motor mount of the spindle motor. The motor mount includes a second cylindrical surface for contacting only a portion of the first cylindrical surface of the stator to reduce the transmission of vibrations from the stator to a base plate of the disc drive. The motor mount may be attached to a base plate of the disc drive when the spindle motor is formed separately from the disc drive. Alternatively, the motor mount may be formed integrally with the base plate of the disc drive.

    Abstract translation: 用于减小盘驱动器的空闲噪声的盘驱动主轴电机包括具有用于接触主轴电动机的电动机支架的第一圆柱形表面的定子。 电动机支架包括用于仅接触定子的第一圆柱形表面的一部分的第二圆柱形表面,以减少振动从定子传递到盘驱动器的基板。 当主轴电机与磁盘驱动器分开形成时,电机安装件可以安装在磁盘驱动器的基板上。 或者,电动机支架可以与盘驱动器的基板一体地形成。

    CIRCUIT AND METHOD FOR DRIVING SPINDLE MOTOR, AND DEVICE AND METHOD FOR DRIVING MAGNETIC DISK
    78.
    发明申请
    CIRCUIT AND METHOD FOR DRIVING SPINDLE MOTOR, AND DEVICE AND METHOD FOR DRIVING MAGNETIC DISK 审中-公开
    用于驱动电动马达的电路和方法,以及用于驱动磁盘的装置和方法

    公开(公告)号:WO01082463A1

    公开(公告)日:2001-11-01

    申请号:PCT/JP2001/002377

    申请日:2001-03-23

    CPC classification number: G11B19/28 G11B19/2009 H02P6/14

    Abstract: A circuit and a method for driving a spindle motor capable of driving the spindle motor by a device having a suppressed structural scale in a driving mode or a driving characteristic optimum for the commands from a host system or types of an application in use; and a device and a method for driving a magnetic disk, wherein a driving is allowed by a spindle motor drive circuit (1) in a drive mode suitable for an application by switching between a drive mode where the spindle motor (9) is driven by a drive system switching means (2) in the spindle motor drive circuit (1) in a pulse width modulation driving mode by a pulse width modulation driving means (5) according to a command from the host system (10) and a drive mode where the spindle motor (9) is driven by a linear driving means (6) in a linear driving mode.

    Abstract translation: 一种用于驱动主轴电动机的电路和方法,该主轴电动机能够通过具有抑制结构规模的装置来驱动主轴电动机,该驱动模式或对于来自主机系统的命令或使用中的应用的类型最佳的驱动特性; 以及用于驱动磁盘的装置和方法,其中,通过在主轴电动机(9)被驱动的驱动模式之间切换,通过主轴电动机驱动电路(1)以适于应用的驱动模式允许驱动, 根据来自主机系统(10)的命令,通过脉冲宽度调制驱动装置(5)以脉冲宽度调制驱动模式在主轴电动机驱动电路(1)中的驱动系统切换装置(2) 主轴电动机(9)由线性驱动装置(6)以线性驱动模式驱动。

    FERROFLUIDIC SEAL BETWEEN A SHAFT AND A HUB FOR A DISK HARD DRIVE
    79.
    发明申请
    FERROFLUIDIC SEAL BETWEEN A SHAFT AND A HUB FOR A DISK HARD DRIVE 审中-公开
    一个轴和一个磁盘驱动器的HUB之间的流体密封

    公开(公告)号:WO0043698A9

    公开(公告)日:2001-09-20

    申请号:PCT/US0001567

    申请日:2000-01-21

    CPC classification number: F16J15/43 G11B17/0282 G11B19/2009

    Abstract: An apparatus and method are provided for sealing an outer surface (170) of a shaft (175) to an inner surface (165) of a hub (160). The seal includes a magnet (155), with top and bottom pole pieces (260 and 265) and a ferrofluid (270) magnetically held in a gap (275) between the pole pieces (260 and 265) and the hub (160) or the shaft (175). The top pole piece (260) has a cross-section that is L-shaped, with a horizontal portion (260a) parallel to the magnet (155) and a shorter vertical portion (260b) facing the shaft (175). In one embodiment, the vertical portion (260b) or the portion of the shaft (175) facing it is contoured to provide a flux gradient that axially concentrates the ferrofluid (270) in the gap (275). In another aspect, a catcher (335) is provided to reduce loss of ferrofluid (270) when the ferrofluidic seal (185) is used to form an outside seal. In yet another aspect, a stationary ferrofluidic seal (345) is provided for sealing a stationary shaft (350) to a rotating hub (355).

    Abstract translation: 提供了一种用于将轴(175)的外表面(170)密封到轮毂(160)的内表面(165)的装置和方法。 密封件包括具有顶极和底极片(260和265)的磁体(155)和磁力保持在极片(260和265)与轮毂(160)之间的间隙(275)中的铁磁流体(270)或 轴(175)。 顶极片(260)具有L形的横截面,水平部分(260a)平行于磁体(155)和与轴(175)相对的较短垂直部分(260b)。 在一个实施例中,垂直部分(260b)或轴(175)面向其的部分的轮廓被设计成提供使铁磁流体(270)在间隙(275)中轴向集中的磁通梯度。 在另一方面,当使用铁磁流体密封件(185)形成外部密封件时,提供捕集器(335)以减少铁磁流体(270)的损失。 在另一方面,提供固定式铁磁流体密封件(345),用于将固定轴(350)密封到旋转毂(355)。

    TOLERANCE RING WITH HIGH HOOP STRENGTH TO RESIST DEFORMATION
    80.
    发明申请
    TOLERANCE RING WITH HIGH HOOP STRENGTH TO RESIST DEFORMATION 审中-公开
    具有高强度耐力变形的耐力环

    公开(公告)号:WO01059314A1

    公开(公告)日:2001-08-16

    申请号:PCT/US2000/028378

    申请日:2000-10-13

    Abstract: A tolerance ring (152) is provided to axially support a first member, such as an actuator cartridge bearing assembly (112), about a second member, such as a post (132). The tolerance ring is configured to have increased hoop strength to resist deformation during handling and installation. The tolerance ring has a substantially cylindrical base portion (148) from which a plurality of spaced apart contact portions, or corrugations (146) extend. A brace portion (154, 164) circumferentially extends from the base portion to increase the hoop strength of the tolerance ring.

    Abstract translation: 公差环(152)设置成围绕例如柱(132)的第二构件轴向地支撑第一构件,例如致动器仓轴承组件(112)。 公差环被配置为具有增加的箍强度以抵抗在处理和安装期间的变形。 公差环具有基本上圆柱形的基部(148),多个间隔开的接触部分或波纹(146)从该基部伸出。 支撑部分(154,164)从基部周向延伸以增加公差环的箍强度。

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