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    Brush assembly
    1.
    发明授权
    Brush assembly 失效
    刷子总成

    公开(公告)号：US06744170B1

    公开(公告)日：2004-06-01

    申请号：US09019871

    申请日：1998-02-06

    申请人： Hung T. Du ,  Todd A. Hagan

    发明人： Hung T. Du ,  Todd A. Hagan

    IPC分类号： H01R3938

    CPC分类号： H02K5/148 ,  H01R39/381 ,  H01R39/383 ,  H02K13/10 ,  H02K23/18 ,  H02K2213/03

    摘要： A brush assembly for an electric motor has a base which secures the brush assembly to a motor spider. A brush housing is associated with the base and has first and second open ends. A brush defining an axis is movably positioned in the housing between the first and second open ends. The brush extends from one of the open ends of the housing. The brush includes a surface which is at a desired angle with respect to the brush axis. A biasing member exerts a force on the brush to bias the brush into an electrical connection with a commutator. An electrical connector electrically couples the brush to provide an electrical connection between the commutator and a power supply.

    摘要翻译： 用于电动机的电刷组件具有将电刷组件固定到电机齿轮的基座。 刷子壳体与底座相关联并且具有第一和第二开口端。 限定轴的刷子可移动地定位在第一和第二开口端之间的壳体中。 刷子从壳体的开口端之一延伸。 刷子包括相对于刷轴线所需的角度的表面。 偏置构件对刷子施加力以将刷子偏置成与换向器的电连接。 电连接器电耦合刷子以在换向器和电源之间提供电连接。

    Motor with permanent magnets having essentially the same inner and outer radius; and method of manufacturing a motor stator housing with permanent magnets
    2.
    发明授权
    Motor with permanent magnets having essentially the same inner and outer radius; and method of manufacturing a motor stator housing with permanent magnets 有权

    公开(公告)号：US08823234B2

    公开(公告)日：2014-09-02

    申请号：US12443191

    申请日：2007-10-12

    申请人： Earl M. Ortt ,  Hung T. Du ,  Sankarshan Murthy

    发明人： Earl M. Ortt ,  Hung T. Du ,  Sankarshan Murthy

    IPC分类号： H02K21/26 ,  H02K23/04 ,  H02K1/17 ,  H02K15/03 ,  H02K1/27

    CPC分类号： H02K1/17 ,  H02K1/2786 ,  H02K15/03 ,  H02K23/04 ,  Y10T29/49009

    摘要： An electric motor has a rotor and a stator. The rotor or the stator has arced permanent magnets that have essentially the same inner radius (IR) and outer radius (OR). In an aspect, the stator has a stator housing having a plurality of poles. Each pole includes a plurality of flat magnets affixed to an inner surface of the stator housing. In an aspect, flats on the outside of the stator housing key the stator assembly in a power tool housing. In an aspect, flat magnets are pre-magnetized, pre-assembled with alternating magnetic polarities, inserted into a stator housing, and remagnetized to a final, desired magnetic polarity configuration. In an aspect, pre-magnetized magnets and unmagnetized magnets are pre-assembled with unmagnetized magnets between magnetized magnets, the pre-assembled magnets inserted into a stator housing, and the unmagnetized magnets magnetized to a final, desired magnetic polarity configuration. In an aspect, pre-magnetized magnets are inserted between anchors inwardly extending from an inner surface of a stator housing with the anchors retaining each magnet placed in the stator housing between anchors from being angularly displaced by subsequently inserted magnets. In an aspect, pre-magnetized magnets are inserted in recesses in an inner surface of a stator housing with the recesses retaining each magnet placed in the stator housing between anchors from being angularly displaced by subsequently inserted magnets. In an aspect, each pole has at least three magnets, at least one of the magnets being thinner than the other magnets. In an aspect, the outer most magnets are made of magnetic material that is more resistant to demagnetization than at least one of the other magnets. In an aspect, the magnets of each pole are unevenly spaced over the pole In an aspect, a power tool includes such an electric motor.

    Method For Forming A Power Tool
    3.
    发明申请
    Method For Forming A Power Tool 有权
    形成电动工具的方法

    公开(公告)号：US20120222288A1

    公开(公告)日：2012-09-06

    申请号：US13472829

    申请日：2012-05-16

    申请人： Hung T. Du ,  Richard T. Walter

    发明人： Hung T. Du ,  Richard T. Walter

    IPC分类号： H01R43/06

    CPC分类号： H02K3/30 ,  H01R43/10 ,  H02K3/48 ,  H02K7/04 ,  H02K15/0056 ,  H02K15/02 ,  H02K15/12 ,  H02K15/165 ,  Y10T29/49009 ,  Y10T29/49011 ,  Y10T29/49012 ,  Y10T29/49071 ,  Y10T29/49073 ,  Y10T29/49075 ,  Y10T29/49995 ,  Y10T29/49996

    摘要： An electric motor has a stator in which an armature is disposed. The armature has a lamination stack having slots in which magnet wires are wound. An armature shaft extends coaxially through the lamination stack and a commutator is disposed on the armature shaft to which ends of the magnet wires are electrically coupled. The magnet wires are at least partially encased in thermally conductive plastic. When the thermally conductive plastic is molded, a balancing feature is formed of the thermally conductive plastic. In aspects, the balancing feature can include a layer of the plastic from which plastic can be removed during balancing; one or more balancing rings adjacent axial sides of the lamination stack from which plastic can be removed to balance the armature; or one or more balancing rings having one or more pockets therein in which one or more weights are disposed to balance the armature.

    摘要翻译： 电动机具有设置有电枢的定子。 电枢具有层叠叠层，其具有缠绕有电磁线的槽。 电枢轴同轴地延伸穿过层压叠层，并且换向器设置在电枢轴上，电磁线的端部电耦合到该电枢轴上。 磁线至少部分地被包裹在导热塑料中。 当导热塑料被模制时，由导热塑料形成平衡特征。 在一些方面，平衡特征可以包括塑料层，在平衡期间可以从其中去除塑料; 一个或多个邻近层压叠层的轴向侧面的平衡环，可以从该平面环移除塑料以平衡电枢; 或一个或多个在其中具有一个或多个凹穴的平衡环，其中设置一个或多个重物以平衡电枢。

    METHOD OF FORMING A POWER TOOL
    4.
    发明申请
    METHOD OF FORMING A POWER TOOL 有权
    形成电动工具的方法

    公开(公告)号：US20110018370A1

    公开(公告)日：2011-01-27

    申请号：US12895176

    申请日：2010-09-30

    申请人： Hung T. Du ,  Richard T. Walter

    发明人： Hung T. Du ,  Richard T. Walter

    IPC分类号： H02K1/04 ,  H02K15/00

    CPC分类号： H02K3/30 ,  H01R43/10 ,  H02K3/48 ,  H02K7/04 ,  H02K15/0056 ,  H02K15/02 ,  H02K15/12 ,  H02K15/165 ,  Y10T29/49009 ,  Y10T29/49011 ,  Y10T29/49012 ,  Y10T29/49071 ,  Y10T29/49073 ,  Y10T29/49075 ,  Y10T29/49995 ,  Y10T29/49996

    摘要： An electric motor has a stator in which an armature is disposed. The armature has a lamination stack having slots in which magnet wires are wound. An armature shaft extends coaxially through the lamination stack and a commutator is disposed on the armature shaft to which ends of the magnet wires are electrically coupled. The magnet wires are at least partially encased in thermally conductive plastic. When the thermally conductive plastic is molded, a balancing feature is formed of the thermally conductive plastic. In aspects, the balancing feature can include a layer of the plastic from which plastic can be removed during balancing; one or more balancing rings adjacent axial sides of the lamination stack from which plastic can be removed to balance the armature; or one or more balancing rings having one or more pockets therein in which one or more weights are disposed to balance the armature.

    摘要翻译： 电动机具有设置有电枢的定子。 电枢具有层叠叠层，其具有缠绕有电磁线的槽。 电枢轴同轴地延伸穿过层压叠层，并且换向器设置在电枢轴上，电磁线的端部电耦合到该电枢轴上。 磁线至少部分地被包裹在导热塑料中。 当导热塑料被模制时，由导热塑料形成平衡特征。 在一些方面，平衡特征可以包括塑料层，在平衡期间可以从其中去除塑料; 一个或多个邻近层压叠层的轴向侧面的平衡环，可以从该平面环移除塑料以平衡电枢; 或一个或多个在其中具有一个或多个凹穴的平衡环，其中设置一个或多个重物以平衡电枢。