公开(公告)号：US06522042B1

公开(公告)日：2003-02-18

申请号：US09492059

申请日：2000-01-27

申请人： Hung T. Du ,  Earl M. Ortt ,  Robert J. Marcinkowski ,  Brandon Verbrugge ,  Michael Kunz

发明人： Hung T. Du ,  Earl M. Ortt ,  Robert J. Marcinkowski ,  Brandon Verbrugge ,  Michael Kunz

IPC分类号： H02K2126

CPC分类号： H02K1/17 ,  Y10T29/49009

摘要： A power tool includes a flux ring with an annular member. At least one molded magnet is received on the annular member. An anchor is on the annular member to retain the at least one magnet on the annular member. The anchor is unitarily formed with the annular member to receive the magnet.

摘要翻译： 电动工具包括具有环形构件的磁通环。 至少一个模制磁体被容纳在环形构件上。 锚固件在环形构件上以将至少一个磁体保持在环形构件上。 锚固体与环形构件整体形成以接收磁体。

公开(公告)号：US20110298313A1

公开(公告)日：2011-12-08

申请号：US13112136

申请日：2011-05-20

申请人： Stephen Osborne ,  Colin Crosby ,  Sankarshan Murthy ,  Hung T. Du ,  Earl M. Ortt

发明人： Stephen Osborne ,  Colin Crosby ,  Sankarshan Murthy ,  Hung T. Du ,  Earl M. Ortt

IPC分类号： H02K7/14

CPC分类号： H02K1/185 ,  H02K1/17 ,  H02K23/04

摘要： A permanent magnet electric motor has a stator and a rotor. The stator has a stator housing with at least a North pole and a South pole, each pole including permanent magnets affixed to an inner surface of the stator housing, where at least two of the magnets within a pole have dissimilar characteristics, e.g., different widths or different grades of demagnetization resistance.

摘要翻译： 永磁电动机具有定子和转子。 定子具有至少具有北极和南极的定子壳体，每个极包括固定在定子壳体的内表面上的永久磁体，其中极内的至少两个磁体具有不同的特性，例如不同的宽度 或不同等级的消磁阻力。

公开(公告)号：US20100033036A1

公开(公告)日：2010-02-11

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： H02K7/14 ,  H02K15/00 ,  H02K1/27 ,  H02K1/17

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.

摘要翻译： 电动机具有转子和定子。 转子或定子具有具有基本相同的内半径（IR）和外半径（OR）的弧形永磁体。 在一方面，定子具有具有多个极的定子壳体。 每个极包括固定在定子壳体的内表面上的多个扁平磁体。 在一个方面，定子外壳外侧的平面将定子组件锁定在动力工具壳体中。 在一方面，扁平磁体被预先磁化，预先组装成具有交替的磁极性，插入定子壳体中，并且被重新磁化成最终期望的磁极性配置。 在一方面，预磁化磁体和非磁化磁体在磁化磁体之间预先组装有非磁化磁体，预组装的磁体插入定子壳体中，而磁化的磁体磁化到最终期望的磁极性结构。 在一个方面，预磁化的磁体被插入到从定子壳体的内表面向内延伸的锚固件之间，锚固件将放置在定子壳体中的每个磁体保持在锚固件之间，以便由随后插入的磁体进行角度位移。 在一方面，预磁化的磁体被插入定子壳体的内表面中的凹槽中，其中保持放置在定子壳体中的每个磁体的凹槽不会被随后插入的磁体角位移。 在一个方面，每个极具有至少三个磁体，至少一个磁体比其它磁体薄。 在一个方面，最外面的磁体由比其它磁体中的至少一个更能抵抗退磁的磁性材料制成。 在一方面，每个极的磁体在极点上不均匀地间隔开。在一个方面，电动工具包括这种电动机。

公开(公告)号：US06781267B2

公开(公告)日：2004-08-24

申请号：US10170996

申请日：2002-06-12

申请人： Earl M. Ortt ,  Brandon Verbrugge ,  Hung T. Du ,  Morris R. Davies

发明人： Earl M. Ortt ,  Brandon Verbrugge ,  Hung T. Du ,  Morris R. Davies

IPC分类号： H02K516

CPC分类号： H02K1/28 ,  H02K1/17 ,  H02K5/15 ,  H02K5/1732 ,  H02K9/06 ,  H02K15/12 ,  H02K23/04

摘要： A power tool has a motor with end caps secured by cold forming to the motor. The end caps include bearings retained in the end cap by deformation of the end cap. The motor includes an armature shaft which is staked to retain laminates as well as a retainer on the shaft. Also, a pinion gear with a shoulder which limits movement of the shaft in the motor. A fan is on the motor armature which is secured by an adhesive which changes color during assembly. The motor also includes a demagnetization member which increases resistance to demagnetization due to elevated temperature, as well as armature reaction field.

摘要翻译： 电动工具具有电动机，其端盖通过冷成型固定到电动机上。 端盖包括通过端盖的变形保持在端盖中的轴承。 电动机包括一个电枢轴，该电枢轴被固定以保持层压板以及轴上的保持器。 另外，具有肩部的小齿轮限制了电动机中轴的移动。 风扇位于电机电枢上，电机电枢由组装时颜色变化的粘合剂固定。 该电动机还包括一个退磁元件，该退磁元件增加了由于升温导致的退磁阻力以及电枢反应场。

公开(公告)号：US08171616B2

公开(公告)日：2012-05-08

申请号：US13023854

申请日：2011-02-09

申请人： David J. Smith ,  John C. Stone ,  Robert Tumberlinson ,  Earl M. Ortt

发明人： David J. Smith ,  John C. Stone ,  Robert Tumberlinson ,  Earl M. Ortt

IPC分类号： H01R43/10

CPC分类号： H02K3/44 ,  Y10T29/49 ,  Y10T29/49009 ,  Y10T29/49011 ,  Y10T29/49012 ,  Y10T29/49071 ,  Y10T29/53148

摘要： An armature for an electric motor has a lamination stack on a shaft with a commutator mounted on one end of the shaft. Magnet wires wound in slots in the lamination stack, the commutator and armature shaft are at least partially encapsulated in thermoset. The commutator has a commutator ring divided into a plurality of segments with slots between the segments that are filled with a second plastic when the commutator is made by molding a core of the second plastic, such as phenolic, in the commutator ring before the commutator ring is mounted on the armature shaft. Prior to molding the thermoset, the commutator ring is sealed. The seal prevents the thermoset from flowing into the slots between the commutator ring segments or over the commutator ring.

摘要翻译： 用于电动机的电枢在轴上具有叠片，其上安装有在轴的一端上的换向器。 缠绕在叠片堆叠中的槽中的磁铁线，换向器和电枢轴至少部分地封装在热固性材料中。 换向器具有一个换向器环，当换向器通过在换向器环之前在换向器环中模制第二塑料（例如酚醛树脂）的芯而制成换向器 安装在电枢轴上。 在模制热固性材料之前，将换向器环密封。 密封件防止热固性材料流入换向器环段之间或换向器环上的槽中。

公开(公告)号：US07791232B2

公开(公告)日：2010-09-07

申请号：US12114211

申请日：2008-05-02

申请人： Madhur M. Purohit ,  Earl M. Ortt

发明人： Madhur M. Purohit ,  Earl M. Ortt

IPC分类号： H02K11/00

CPC分类号： H02K5/15 ,  B24B23/03 ,  H02K1/278 ,  H02K5/08 ,  H02K5/1732 ,  H02K7/145 ,  H02K29/08 ,  Y10T29/49071

摘要： A power tool has a housing a housing having an electronically commutated motor disposed therein. The motor has a rotor and a stator. The rotor has permanent magnets. The stator has a lamination stack and windings wound therein. Features are provided to provide double insulation.

摘要翻译： 动力工具具有壳体，壳体具有设置在其中的电子换向马达。 电动机具有转子和定子。 转子具有永磁体。 定子具有层压叠层和缠绕在其中的绕组。 提供特性以提供双重绝缘。

公开(公告)号：US07119469B2

公开(公告)日：2006-10-10

申请号：US11113412

申请日：2005-04-22

申请人： Earl M. Ortt ,  Michael J. Agnes ,  Hung Du

发明人： Earl M. Ortt ,  Michael J. Agnes ,  Hung Du

IPC分类号： H02K1/17

CPC分类号： H02K1/2786 ,  H02K1/17 ,  H02K5/00 ,  H02K5/08 ,  H02K5/1735 ,  H02K7/145 ,  H02K9/06 ,  H02K23/04 ,  Y10T29/49009 ,  Y10T29/49012 ,  Y10T29/49075

摘要： A stator assembly for an electric motor includes a stator housing, a flux ring inserted into the stator housing after the stator housing is formed and a plurality of magnets on an inner surface of the flux ring. Overmold material is molded around the magnets in the flux ring, such as by injection molding. The overmold material secures the magnets to the flux ring and the flux ring to the housing. In an aspect, the overmold material is molded to form at least one of a commutator end or rear bearing support, front bearing support and fan baffle.

摘要翻译： 一种用于电动机的定子组件包括定子壳体，在形成定子壳体之后插入定子壳体中的磁通环和在磁通环的内表面上的多个磁体。 包覆模制材料围绕磁通环中的磁体模制，例如通过注塑成型。 包覆成型材料将磁体固定到磁通环和磁通环到壳体。 一方面，二次模塑材料被模制以形成换向器端部或后轴承支撑件，前轴承支撑件和风扇挡板中的至少一个。

公开(公告)号：US06750579B2

公开(公告)日：2004-06-15

申请号：US10189688

申请日：2002-07-03

申请人： Brandon Verbrugge ,  Robert J. Marcinkowski ,  Earl M. Ortt

发明人： Brandon Verbrugge ,  Robert J. Marcinkowski ,  Earl M. Ortt

IPC分类号： H02K117

CPC分类号： H02K1/17 ,  H02K7/145 ,  Y10T29/49009

摘要： A power tool includes a motor with a flux ring. The flux ring includes a ring member with a first and second end. The ends are positioned with respect to one another such that the ends move towards and away from one another during compressing and expanding of the ring. At least one anchor is unitarily formed with the ring. A pair of magnets are coupled with unitarily formed anchors to couple the pair of magnets with the ring. The magnets are coupled with the ring such that the ring may be compressed and expanded with the magnets secured in the ring.

摘要翻译： 电动工具包括具有磁通环的电动机。 磁通环包括具有第一和第二端的环形构件。 端部相对于彼此定位，使得端部在环的压缩和膨胀期间彼此移动并远离彼此。 至少一个锚与环一体形成。 一对磁体与单一形成的锚固件联接，以将该对磁体与环相耦合。 磁体与环联接，使得环可以被固定在环中的磁体压缩和扩展。

公开(公告)号：US06606779B2

公开(公告)日：2003-08-19

申请号：US09803254

申请日：2001-03-09

申请人： Brandon Verbrugge ,  Robert J. Marcinkowski ,  Earl M. Ortt

发明人： Brandon Verbrugge ,  Robert J. Marcinkowski ,  Earl M. Ortt

IPC分类号： H02K1516

CPC分类号： H02K1/17 ,  H02K7/145 ,  Y10T29/49009

摘要： A power tool includes a motor with a flux ring. The flux ring includes a ring member with a first and second end. The ends are positioned with respect to one another such that the ends move towards and away from one another during compressing and expanding of the ring. At least one anchor is unitarily formed with the ring. A pair of magnets are coupled with unitarily formed anchors to couple the pair of magnets with the ring. The magnets are coupled with the ring such that the ring may be compressed and expanded with the magnets secured in the ring.

公开(公告)号：US09318932B2

公开(公告)日：2016-04-19

申请号：US13712200

申请日：2011-06-14

申请人： Madhur M. Purohit ,  Earl M. Ortt ,  Erik Ekstrom ,  Shailesh P. Waikar ,  Marcell E. Coates ,  Eric E. Hatfield

发明人： Madhur M. Purohit ,  Earl M. Ortt ,  Erik Ekstrom ,  Shailesh P. Waikar ,  Marcell E. Coates ,  Eric E. Hatfield

IPC分类号： H02K7/14 ,  H02K9/06 ,  H02K3/28 ,  H02K3/52 ,  H02K5/22 ,  H02K21/12 ,  H02K1/27 ,  H02K7/116 ,  H02K11/00

CPC分类号： H02K9/06 ,  H02K1/276 ,  H02K3/28 ,  H02K3/522 ,  H02K5/225 ,  H02K7/116 ,  H02K7/145 ,  H02K9/22 ,  H02K11/20 ,  H02K11/21 ,  H02K11/215 ,  H02K11/30 ,  H02K11/33 ,  H02K21/12 ,  H02K21/16 ,  H02K2203/03 ,  H02K2203/09

摘要： A power tool includes a brushless DC motor housed inside an upper body of the tool housing and a control unit housed inside a handle of the housing, the control unit including a micro-controller mounted on a control circuit board, a power unit electronically coupled to the micro-controller and mounted on a power circuit board arranged substantially parallel the control circuit board inside the handle, and a heat sink in thermal contact with the power unit. An input unit may be mounted directly on the control circuit board. An upper portion of the heat sink extending towards the upper body of the housing may include a tab protruding underneath a fan assembly of the motor to transfer heat from the power unit to the airflow created by the fan.

摘要翻译： 电动工具包括容纳在所述工具壳体的上部主体内的无刷直流电动机和容纳在所述壳体的手柄内的控制单元，所述控制单元包括安装在控制电路板上的微控制器，所述控制单元电连接到 微控制器并且安装在基本上平行于手柄内的控制电路板的电源电路板上，以及散热器与动力单元热接触。 输入单元可以直接安装在控制电路板上。 散热器朝向壳体的上部延伸的上部可以包括突出在电动机的风扇组件下面的突片，以将热量从动力单元传递到由风扇产生的气流。