公开(公告)号：US20020063494A1

公开(公告)日：2002-05-30

申请号：US09990125

申请日：2001-11-21

发明人： Rikio Yoshikawa ,  Katsuhiro Mochizuki

IPC分类号： H02K001/22 ,  H02K007/00 ,  H02K005/00 ,  H02K011/00

CPC分类号： H02K1/187 ,  H02K5/165 ,  H02K9/22 ,  H02K11/33

摘要： An outer rotor type brushless motor comprising an outer rotor having permanent magnets fixed onto an inner periphery of a rotor yoke, a stator including a stator core having a plural of magnetic pole portions protruded on an outer periphery thereof and coils wound on the magnetic pole portions, a cylindrical boss disposed on an inner periphery of an annular portion of the stator core, a rotational shaft extending along an axis of the boss and rotationally supported on the boss through a bearing with a leading end of the shaft having a center portion of the rotor yoke fixed thereto and a mounting plate fixed onto an outer periphery of the boss wherein the boss is formed of resin mold and extending through a hole in the mounting plate and fixed thereto and the annular portion of the stator core is mounted on and fixed to a rising portion on the inner periphery of the mounting plate.

摘要翻译： 一种外转子型无刷电动机，其包括固定在转子磁轭的内周上的具有永久磁铁的外转子，具有定子铁心的定子，所述定子铁芯具有在其外周上突出的多个磁极部分，并且缠绕在所述磁极部分上的线圈 ，设置在所述定子铁心的环形部分的内周上的圆柱形凸台，沿所述凸台的轴线延伸的旋转轴，并通过轴承旋转地支撑在所述凸台上，所述轴承的前端具有所述轴的中心部分 固定在其上的转子轭和固定到凸台的外周上的安装板，其中凸起由树脂模具形成并且延伸穿过安装板中的孔并固定到其上，并且定子芯的环形部分安装并固定到 在安装板的内周上的上升部分。

公开(公告)号：US20020060501A1

公开(公告)日：2002-05-23

申请号：US09963229

申请日：2001-09-26

申请人： Seagate Technology, LLC

发明人： Menachem Rafaelof

IPC分类号： H02K007/00 ,  H02K011/00 ,  H02K005/24

CPC分类号： H02K5/24 ,  F16C17/107 ,  G11B19/2009 ,  H02K5/1677

摘要： 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.

摘要翻译： 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，以减少振动从定子到盘驱动器的基板的传递。 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。

公开(公告)号：US20020053840A1

公开(公告)日：2002-05-09

申请号：US09420109

申请日：1999-10-18

发明人： JURGEN OELSCH

IPC分类号： H02K007/00 ,  H02K011/00

CPC分类号： F16C33/765 ,  F16C2370/12 ,  G11B19/2009 ,  H02K5/124 ,  Y10T29/49025

摘要： The present invention relates to a spindle motor with a magnetic seal. A method and an apparatus are described for sealing spindle motors, preferably those used for disk storage units.

摘要翻译： 本发明涉及一种具有磁性密封的主轴电动机。 描述了用于密封主轴电机的方法和装置，优选用于磁盘存储单元的主轴电机。

公开(公告)号：US20020047344A1

公开(公告)日：2002-04-25

申请号：US09865240

申请日：2001-05-24

发明人： Troy M. Herndon ,  Jeffry A. LeBlanc

IPC分类号： H02K007/00 ,  H02K011/00

CPC分类号： H02K1/187 ,  H02K11/40

摘要： A spindle motor incorporates a shaft having a known outer diameter and a stator having a known inner diameter which is slightly larger than the outer diameter of the shaft so that it may slip over the shaft. Die cut sharp features are defined in the inner diameter of the stator laminations. These features extending radially inward from the generally circular inner diameter of the stator laminations so that these features establish an interference fit with the outer surface of the shaft which the structure is mounted. When the stack is pressed onto the outer surface of the shaft to which it is mounted and supported, the coating on the stack will scrape off, thus establishing a metal-to-metal contact between the stack and the adjoining outer surface of the shaft. As a result of this, a tight interference fit will be established between the inner surface of the stack and the outer surface of the shaft, thus both radially fixing the stack on the shaft, and grounding the stack to the shaft.

摘要翻译： 主轴电动机包括具有已知外径的轴和具有已知内径的定子，该内径略大于轴的外径，使得其可能在轴上滑动。 切割的尖锐特征限定在定子叠片的内径中。 这些特征从定子叠片的大致圆形内径径向向内延伸，使得这些特征与安装结构的轴的外表面建立过盈配合。 当堆叠被按压到其被安装和支撑的轴的外表面上时，堆叠上的涂层将被刮掉，从而在堆和邻近的轴的外表面之间建立金属对金属的接触。 因此，在堆的内表面和轴的外表面之间将建立紧密的过盈配合，从而将堆叠径向地固定在轴上，并将堆叠接地到轴上。

公开(公告)号：US20010045782A1

公开(公告)日：2001-11-29

申请号：US09738268

申请日：2000-12-15

发明人： Dennis K. Lieu ,  Griffith D. Neal

IPC分类号： H02K001/04 ,  H02K007/00 ,  H02K015/12

CPC分类号： H02K1/04 ,  G11B19/2009 ,  H02K1/146 ,  H02K1/18 ,  H02K1/185 ,  H02K1/187 ,  H02K3/38 ,  H02K5/08 ,  H02K5/10 ,  H02K5/165 ,  H02K5/1737 ,  H02K15/12 ,  Y10T29/49009 ,  Y10T29/49073

摘要： A spindle motor comprises a baseplate. a shaft supported by said baseplate, a stator assembly having windings, the stator being rigidly attached to said baseplate, injection molded thermoplastic material encapsulating said windings, and a hub supported on said shaft, said hub having a magnet connected thereto in operable proximity to the stator assembly. In one embodiment, the stator is cordless. In other embodiments, the stator has a core and the core is substantially encapsulated by the thermoplastic material. In preferred embodiments, the thermoplastic material secures the stator to the baseplate or forms the baseplate.

摘要翻译： 主轴电机包括底板。 由所述基板支撑的轴，具有绕组的定子组件，所述定子刚性地附接到所述基板，封装所述绕组的注射成型热塑性材料和支撑在所述轴上的毂，所述毂具有连接到其上的磁体， 定子总成。 在一个实施例中，定子是无绳的。 在其它实施例中，定子具有芯，并且芯基本上被热塑性材料包封。 在优选实施例中，热塑性材料将定子固定到底板或形成基板。

公开(公告)号：US20010040411A1

公开(公告)日：2001-11-15

申请号：US09730258

申请日：2000-12-05

发明人： Hiroki Kitahori ,  David W. Albrecht

IPC分类号： H02K007/00

CPC分类号： G11B21/12 ,  G11B19/2009

摘要： A spindle motor employed for a hard disk unit, including a hub having an outer peripheral wall portion provided with a rotor magnet on its outer peripheral surface and formed so as to be able to support the inner peripheral portion of a hard disk and a stator coil fixed so as to be positioned outwards in the radial direction of the disk and face the rotor magnet. This spindle motor is assembled in the disk unit, in which each stator coil is disposed so that the tracing of the magnetic head in movement is positioned between adjacent cores, thereby the magnetic head is affected less by the leak magnetic flux from the stator coil. In addition, the scanning head is moved to its unloading position with use of an energy accumulated in the capacitor when the power of the disk unit is turned off.

摘要翻译： 一种用于硬盘单元的主轴电机，包括具有外周壁部的轮毂，所述外周壁部在其外周面上设置有转子磁铁，并且形成为能够支撑硬盘的内周部分和定子线圈 被固定成沿着盘的径向向外定位并面向转子磁体。 该主轴电动机组装在盘单元中，其中每个定子线圈被布置成使得磁头的运动轨迹位于相邻芯之间，由此磁头受到来自定子线圈的泄漏磁通的影响较小。 此外，当盘单元的电源关闭时，扫描头利用积聚在电容器中的能量移动到其卸载位置。

公开(公告)号：US20010011847A1

公开(公告)日：2001-08-09

申请号：US09760603

申请日：2001-01-17

发明人： Jean-Marie Laurent

IPC分类号： H02K007/00

CPC分类号： H02P6/085

摘要： The motor has a stator and a rotor. One of the elements has coils constituting a three-phase winding and an electronic control module having inputs connected to rotor position sensors and to a speed reference signal (Vc), and including a power circuit for powering the phases from a DC source under the control of a processor. The processor causes the phases to be powered at variable duty ratio so as to regulate speed in a first mode without overlap in time between the periods in which the various phases are powered with voltage pulses, and in a second mode in which there is 33% overlap of power to two phases, and it causes a changeover from the first mode to the second mode when the duty ratio reaches a predetermined value lying in the range 70% to 100%, and a changeover from the second mode to the first mode when the duty ratio falls below another predetermined value.

摘要翻译： 电机具有定子和转子。 元件中的一个具有构成三相绕组的线圈和具有连接到转子位置传感器和速度参考信号（Vc）的输入的电子控制模块，并且包括用于在控制下从DC源供电相的电源电路 的处理器。 所述处理器使所述相以可变占空比供电，以便在第一模式中调节速度，而在各个相位用电压脉冲供电的周期之间的时间重叠，而在第三模式中，存在33％ 当占空比达到70％至100％的范围内的预定值，并且当从第二模式切换到第一模式时，从第一模式切换到第二模式， 占空比低于另一预定值。

公开(公告)号：US20040256926A1

公开(公告)日：2004-12-23

申请号：US10893690

申请日：2004-07-16

申请人： Nidec Corporation

发明人： Eiji Miyamoto

IPC分类号： H02K007/00 ,  H02K011/00 ,  H02P001/18 ,  H02P003/08

CPC分类号： H02K29/08 ,  Y10S310/06

摘要： A brushless motor includes a rotor position detecting device disposed between stator teeth, rather than directly below a rotor magnet, so that the distance between a lower end of a rotor magnet and a stationary frame is minimized. This results in a thinner brushless motor than conventional designs. In the preferred embodiment of the present invention, the rotor position detecting device is a Hall device.

公开(公告)号：US20040239198A1

公开(公告)日：2004-12-02

申请号：US10624563

申请日：2003-07-23

申请人： Sunonwealth Electric Machine Industry Co., Ltd.

发明人： Alex Horng ,  Yin-Rong Hong

IPC分类号： H02K007/00 ,  H02K011/00

CPC分类号： H02K7/083 ,  H02K5/15 ,  H02K5/1675

摘要： An axial tube assembly of a motor includes an axial tube around which a stator assembly is mounted, an engaging member, and a sleeve in which a bearing is mounted. The engaging member includes a base and a plurality of resilient legs projecting from the base. Each resilient leg has a hook on a distal end thereof. The base of the engaging member is engaged with and thus seals a bottom end of an axial hole of the axial tube. The sleeve is mounted in the engaging member and has a base portion. The hook of each resilient leg is pressed outward to thereby retain the stator assembly in place when the sleeve and the engaging member are received in the axial tube, with the resilient legs of the engaging member together holding the sleeve to thereby allow tight engagement between the sleeve and the bearing.

摘要翻译： 电动机的轴向管组件包括轴向管，定子组件安装在该轴上，接合构件以及安装有轴承的套筒。 接合构件包括基部和从基部突出的多个弹性腿。 每个弹性腿在其远端具有钩。 接合构件的基部与轴向管的轴向孔的底端接合并密封。 套筒安装在接合件中，并具有基座部分。 每个弹性腿的钩被向外挤压，从而当套筒和接合构件容纳在轴向管中时将定子组件保持在适当位置，其中接合构件的弹性腿一起保持套筒，从而允许 套筒和轴承。

公开(公告)号：US20040233576A1

公开(公告)日：2004-11-25

申请号：US10683816

申请日：2003-10-09

发明人： Raquib Uddin Khan ,  Mohammad Mahbubul Ameen

IPC分类号： H02K007/00

CPC分类号： G11B19/2009 ,  F16C33/12 ,  F16C2370/12

摘要： A system and means is provided for preserving bearing surfaces and maintaining bearing life, for use with spindle motors. In an aspect, adhesive and abrasive wear is minimized, corrosion is reduced, and bearing dynamic performance and fluid purity is maintained. In an aspect, a silicon containing copper alloy is utilized for one bearing surface and a stainless steel is utilized for an adjacent surface. The present invention also satisfies considerations including hardness, thermal expansion, thermal conductivity and use with grooved surfaces.

摘要翻译： 提供了一种用于保持轴承表面并保持轴承寿命的系统和装置，用于主轴电机。 在一个方面，粘合剂和磨料磨损最小化，腐蚀降低，并保持动态性能和流体纯度。 在一方面，一种含硅铜合金用于一个支承表面，并且不锈钢用于相邻表面。 本发明还满足包括硬度，热膨胀，导热性和带槽表面使用的考虑。