公开(公告)号：US07023159B2

公开(公告)日：2006-04-04

申请号：US10647807

申请日：2003-08-25

申请人： Bhanuprasad V. Gorti ,  Hung T. Du

发明人： Bhanuprasad V. Gorti ,  Hung T. Du

IPC分类号： H02P7/00

CPC分类号： H02P3/12

摘要： A method and apparatus for braking a motor has a braking power switching device coupled across windings of the motor. To brake the motor, the braking power switching device is cycled on and off.

摘要翻译： 用于制动电动机的方法和装置具有耦合在电动机的绕组上的制动功率开关装置。 为了制动电动机，制动电源开关装置被开启和关闭。

公开(公告)号：US07013552B2

公开(公告)日：2006-03-21

申请号：US10365065

申请日：2003-02-12

申请人： Hung T. Du

发明人： Hung T. Du

IPC分类号： H02K15/00 ,  H02K1/04

CPC分类号： H02K13/04 ,  H02K9/06 ,  H02K13/006 ,  Y10T29/49009 ,  Y10T29/49012

摘要： An electric motor having an armature which includes a coating of thermally conductive plastic applied in a conventional injection molding process. The armature also includes a fan which is integrally formed from the thermally conductive plastic applied to the armature. This completely eliminates the need to apply one or more coatings of a trickle resin to the armature. It also eliminates the need to separately form and secure a fan by a suitable adhesive to the armature, which together significantly simplifies the manufacturing and cost of the armature. The plastic coating also better fills the spaces between the magnet wires, thus promoting even more efficient cooling and better holding of the magnet wires stationary relative to one another. The thermally conductive plastic coating may be mixed with other suitable materials to provide a density approximately equal to the magnet wires. This eliminates the need to balance the armature after the injection molding step.

摘要翻译： 一种具有电枢的电动机，其包括以常规注射成型工艺施加的导热塑料涂层。 衔铁还包括由施加到电枢的导热塑料整体形成的风扇。 这完全不需要将一个或多个滴液树脂的涂层施加到电枢上。 它也消除了通过合适的粘合剂分别形成和固定风扇到电枢的需要，这一起显着地简化了电枢的制造和成本。 塑料涂层还更好地填充电磁线之间的空间，从而促进更有效的冷却和更好地保持电磁线相对于彼此固定。 导热塑料涂层可以与其它合适的材料混合以提供大致等于磁体线的密度。 这消除了在注塑步骤之后平衡电枢的需要。

公开(公告)号：US06462448B1

公开(公告)日：2002-10-08

申请号：US09609855

申请日：2000-07-05

申请人： Hung T. Du

发明人： Hung T. Du

IPC分类号： H02K106

CPC分类号： H02K15/03 ,  H02K1/17 ,  H02K23/04 ,  Y10T29/49009 ,  Y10T29/49011 ,  Y10T29/49012 ,  Y10T29/49075 ,  Y10T29/4998 ,  Y10T29/49986 ,  Y10T29/49988 ,  Y10T29/53161

摘要： A flux ring for a motor of a power tool has an annular housing which fits inside the motor can of the motor. At least one magnet is on the ring. The at least one magnet includes a portion formed from an isotropic magnetic material and a portion formed from an anisotropic magnetic material. Preferably, the isotropic magnetic material is sandwiched by the anisotropic magnetic material. The magnets being molded onto the flux ring in a two shot process.

摘要翻译： 用于电动工具的电动机的磁通环具有安装在电动机的电动机壳内的环形壳体。 环上至少有一个磁铁。 至少一个磁体包括由各向同性磁性材料形成的部分和由各向异性磁性材料形成的部分。 优选地，各向同性磁性材料被各向异性磁性材料夹持。 这些磁体在两次喷射过程中被模制到磁通环上。

公开(公告)号：US08203239B2

公开(公告)日：2012-06-19

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

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。

公开(公告)号：US07814641B2

公开(公告)日：2010-10-19

申请号：US11491457

申请日：2006-07-21

申请人： Hung T. Du ,  Richard T. Walter

发明人： Hung T. Du ,  Richard T. Walter

IPC分类号： B23P13/04

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： A method of forming a power tool includes forming and balancing an armature by securing a lamination stack having slots therein on an armature shaft securing a commutator on one end of the armature shaft, winding magnet wires in the slots in the lamination stack and securing ends of the magnet wires to the commutator, and molding plastic to at least partially encase the magnet wires in plastic and forming a balancing feature. Plastic is removed from the balancing feature during dynamic balancing of the armature. The armature is then disposed in a stator to form an electric motor and the electric motor is disposed in a power tool.

摘要翻译： 一种形成电动工具的方法包括：通过将电枢轴固定在电枢轴的一端固定其上具有狭槽的叠层叠层来形成和平衡电枢，在电枢轴的一端固定换向器，将电磁线缠绕在叠片堆叠中的槽中， 电磁线到换向器，以及模制塑料以至少部分地将电线缠绕在塑料中并形成平衡特征。 在电枢的动平衡过程中，塑料被从平衡特征中移出。 然后将电枢设置在定子中以形成电动机，并且电动机设置在电动工具中。

公开(公告)号：US07685697B2

公开(公告)日：2010-03-30

申请号：US11491455

申请日：2006-07-21

申请人： Hung T. Du ,  Joshua F. West ,  Richard T. Walter

发明人： Hung T. Du ,  Joshua F. West ,  Richard T. Walter

IPC分类号： H01R43/06 ,  H01R43/10

CPC分类号： H02K1/30 ,  H01R43/10 ,  H02K1/32 ,  H02K3/12 ,  H02K3/30 ,  H02K3/345 ,  H02K3/46 ,  H02K3/48 ,  H02K3/487 ,  H02K3/50 ,  H02K3/51 ,  H02K7/04 ,  H02K9/06 ,  H02K9/20 ,  H02K9/22 ,  H02K13/006 ,  H02K13/04 ,  H02K15/0056 ,  H02K15/02 ,  H02K15/12 ,  H02K15/165 ,  Y10T29/49 ,  Y10T29/49009 ,  Y10T29/49011 ,  Y10T29/49012 ,  Y10T29/49071 ,  Y10T29/49073 ,  Y10T29/53148

摘要： A method of manufacturing a power tool includes forming an armature by placing an electrically insulative sleeve on an armature shaft, securing a lamination stack having slots therein on the armature shaft with the insulative sleeve disposed therebetween, securing a commutator on one end of the armature shaft with the insulative sleeve disposed therebetween, winding magnet wires in the slots in the lamination stack and securing ends of the magnet wires to the commutator, and molding thermally conductive plastic to at least partially encase the magnet wires in plastic. The armature is then disposed in a stator to form an electric motor and the electric motor is disposed in a power tool. In an aspect, electrically insulative plastic is molded in the slots of the lamination stack to form slot liners and around the ends of the lamination stack to form end spiders.In an aspect, the method includes disposing an electrically insulative seal around the insulative sleeve and abutting the commutator to seal any gap between an end of the insulative sleeve and the commutator.

摘要翻译： 制造动力工具的方法包括：通过将电绝缘套管放置在电枢轴上来形成电枢，将其中具有狭槽的叠片叠片固定在电枢轴上，其中绝缘套筒位于电枢轴之间，将换向器固定在电枢轴的一端 其中绝缘套管设置在其间，将电磁线缠绕在叠片堆叠中的狭槽中，并将电磁线的固定端固定到换向器，并且模制导热塑料以至少部分地将电线缠绕在塑料中。 然后将电枢设置在定子中以形成电动机，并且电动机设置在电动工具中。 在一个方面，电绝缘塑料被模制在层压叠层的槽中以形成槽衬套并且围绕层压叠层的端部形成末端蜘蛛。

公开(公告)号：US07602137B2

公开(公告)日：2009-10-13

申请号：US11676482

申请日：2007-02-19

申请人： Hung T. Du ,  Uday S. Deshpande ,  Joshua D. West ,  Bhanuprasad V. Gorti ,  Shailesh Waikar

发明人： Hung T. Du ,  Uday S. Deshpande ,  Joshua D. West ,  Bhanuprasad V. Gorti ,  Shailesh Waikar

IPC分类号： H02P1/26

CPC分类号： H02P25/18 ,  H02K1/278 ,  H02K3/28 ,  H02K5/225 ,  H02K7/116 ,  H02K7/145 ,  H02K11/28 ,  H02K11/33 ,  H02P6/34

摘要： A power tool having an electronically commutated DC motor capable of providing various operating modes ranging from a maximum efficiency operating mode to a maximum power operating mode. The motor has a rotor having permanent magnets mounted in recesses in a back iron of the rotor. In one embodiment the motor has three phase windings, each having at least a pair of coils. The phase windings are connected in either a delta or a wye configuration via electromechanical or electronic switching components, or a combination of both, by a controller within the tool. The coils in each phase winding can also be switched between series and parallel configurations to configure the motor to provide its various operating modes. In one embodiment a dual wound motor is disclosed that has its phase coils dynamically or statically switchable between series and parallel configurations.

摘要翻译： 一种具有电子换向直流电机的电动工具，其能够提供从最大效率操作模式到最大功率操作模式的各种操作模式。 电动机具有转子，该转子具有安装在转子的后铁中的凹部中的永磁体。 在一个实施例中，电机具有三相绕组，每个绕组具有至少一对线圈。 相位绕组由工具内的控制器通过机电或电子开关部件或两者的组合以三角形或者Y形配置连接。 每个相绕组中的线圈也可以在串联和并联配置之间切换，以配置电机以提供其各种工作模式。 在一个实施例中，公开了一种双绕组电动机，其具有在串联和并联配置之间动态或可静态切换的其相线圈。

公开(公告)号：US20090101379A1

公开(公告)日：2009-04-23

申请号：US12224358

申请日：2007-03-02

申请人： Hung T. Du ,  Josh West

发明人： Hung T. Du ,  Josh West

IPC分类号： B23B45/02 ,  B23B47/06

CPC分类号： B25B21/00 ,  H02P7/29

摘要： A cordless power tool (300) has a transmission (12) having multiple speed ranges In the light torque range, the speed of a motor (8) of the cordless power tool is held constant to hold an output speed of the transmission (12) constant until motor power reaches a predetermined percentage of the maximum watts out of the motor.

摘要翻译： 无绳电动工具（300）具有多个速度范围的变速器（12）在光转矩范围内，无绳电动工具的电动机（8）的速度保持恒定以保持变速器（12）的输出速度， 直到电机功率达到电机以外的最大瓦特的预定百分比。

公开(公告)号：US07464455B2

公开(公告)日：2008-12-16

申请号：US11201073

申请日：2005-08-10

申请人： Hung T. Du ,  Richard T. Walter ,  Michael R. Sell ,  Joshua F. West

发明人： Hung T. Du ,  Richard T. Walter ,  Michael R. Sell ,  Joshua F. West

IPC分类号： H02R15/00 ,  H02R1/04

CPC分类号： H02K3/50 ,  H01R39/14 ,  H01R39/32 ,  H02K1/30 ,  H02K1/32 ,  H02K3/12 ,  H02K3/30 ,  H02K3/345 ,  H02K3/46 ,  H02K3/48 ,  H02K3/487 ,  H02K3/51 ,  H02K5/08 ,  H02K7/04 ,  H02K9/06 ,  H02K9/20 ,  H02K9/22 ,  H02K13/006 ,  H02K13/04 ,  H02K15/12 ,  H02K15/165 ,  H02K23/00 ,  Y10T29/49009 ,  Y10T29/49011 ,  Y10T29/49012 ,  Y10T29/49071 ,  Y10T29/49075 ,  Y10T29/49078

摘要： A method for forming an armature for an electric motor includes securing a lamination stack having slots therein on an armature shaft. A commutator is secured on one end of the armature shaft. Magnet wires are wound in the slots in the lamination stack and ends of the magnet wires are secured to the commutator. Plastic is molded around the lamination stack, commutator and magnet wires. Excess plastic is machined off. The magnet wires can have a layer of heat activated adhesive that is activated when the plastic is molded. Slots in the lamination stack can include slot liners formed of thermally conductive plastic. A fan can be formed when the thermally conductive plastic is molded to encapsulate the magnet wires.

摘要翻译： 一种用于形成用于电动机的电枢的方法包括将其中具有槽的叠片叠片固定在电枢轴上。 换向器固定在电枢轴的一端。 磁体线卷绕在层压叠层中的槽中，并且电磁线的端部固定到换向器。 塑料围绕叠片堆叠，换向器和电磁线模制。 加工过多的塑料。 电磁线可以具有一层热活化的粘合剂，当塑料被模制时被激活。 层叠堆叠中的槽可以包括由导热塑料形成的槽衬。 当形成导热塑料以封装电磁线时，可以形成风扇。

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。