-
公开(公告)号：EP0935318A2
公开(公告)日：1999-08-11
申请号：EP99300836.6
申请日：1999-02-04
申请人： Black & Decker Inc.
发明人： Du, Hung T. , Hagan, Todd A.
CPC分类号： H02K5/148 , H01R39/381 , H01R39/383 , H02K13/10 , H02K23/18 , H02K2213/03
摘要： A brush assembly 20 for an electric motor 10 has a base 22 which secures the brush assembly to a motor spider 18. A brush housing 24 is associated with the base and has first and second open ends 42, 44. A brush 28 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 86 which is at a desired angle with respect to the brush axis. A biasing member 26 exerts a force on the brush to bias the brush into an electrical connection with a commutator 16. An electrical connector 30 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10的电刷组件20具有将电刷组件固定到电机齿轮18的基座22.电刷壳体24与基座相关联，并具有第一和第二开口端42,44。限定轴线的电刷28 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处于所需角度的表面86。 偏压构件26对刷子施加力以将刷子偏置成与换向器16的电连接。电连接器30电耦合刷子以在换向器和电源之间提供电连接。
-
公开(公告)号：EP0673105A3
公开(公告)日：1995-11-29
申请号：EP95301097.2
申请日：1995-02-21
申请人： Black & Decker Inc.
摘要： An electric motor such as a universal series wound motor having permanent magnetic segments (38,40) mounted within slots formed in the poles (14,16) of the stator. The permanent magnets are precisely positioned and securely retained within the slots with an injected metal bonding agent having very stable mechanical properties even under severe temperature conditions. The permanent magnets ensure that a predetermined level of braking current exists when the armature is short circuited to effectively dynamically brake the motor. The AC supply signal is rectified to prevent demagnetization of the permanent magnets and to avoid overheating of the permanent magnets and the armature caused by the continuous changing of polarity of the AC supply signal. An alternative embodiment describes a modified armature core construction that sufficiently reduces eddy current losses to offset the addition of the permanent magnet braking members.
-
公开(公告)号：EP1411626A2
公开(公告)日：2004-04-21
申请号：EP03023069.2
申请日：2003-10-14
申请人： Black & Decker Inc.
发明人： Gorti, Bhanuprasad V. , Du, Hung T.
IPC分类号： H02P3/08
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： 耦合在电动机绕组两端的制动功率开关装置（102）被循环启动和关闭以对马达（12）施加制动。 还包括以下独立权利要求：（1）电机控制电路; （2）电动工具; 和（3）电机制动方法。
-
公开(公告)号：EP0673105A2
公开(公告)日：1995-09-20
申请号：EP95301097.2
申请日：1995-02-21
申请人： Black & Decker Inc.
摘要： An electric motor such as a universal series wound motor having permanent magnetic segments (38,40) mounted within slots formed in the poles (14,16) of the stator. The permanent magnets are precisely positioned and securely retained within the slots with an injected metal bonding agent having very stable mechanical properties even under severe temperature conditions. The permanent magnets ensure that a predetermined level of braking current exists when the armature is short circuited to effectively dynamically brake the motor. The AC supply signal is rectified to prevent demagnetization of the permanent magnets and to avoid overheating of the permanent magnets and the armature caused by the continuous changing of polarity of the AC supply signal. An alternative embodiment describes a modified armature core construction that sufficiently reduces eddy current losses to offset the addition of the permanent magnet braking members.
摘要翻译： 一种电动机，例如具有永久磁段（38,40）的通用串联卷绕电动机，其安装在形成在定子的极（14,16）中的槽内。 永久磁铁被精确定位并牢固地保持在槽内，注入的金属粘合剂甚至在恶劣的温度条件下也具有非常稳定的机械性能。 永久磁铁确保当电枢短路时存在预定水平的制动电流，以有效地动态地制动电动机。 交流电源信号被整流以防止永磁体的退磁，并且避免由于交流电源信号的极性的连续变化引起的永磁体和电枢的过热。 替代实施例描述了一种改进的电枢铁芯结构，其充分地减小了涡流损耗以抵消永磁制动构件的添加。
-
公开(公告)号：EP1237252B1
公开(公告)日：2005-01-12
申请号：EP02251261.0
申请日：2002-02-25
申请人： Black & Decker Inc.
发明人： Agnes, Michael , Ortt, Earl , Wang, Ren H. , Boyce, Allyn , Verbrugge, Brandon , Zhang, Jiaqi , Du, Hung T. , Walter, Richard T.
CPC分类号： H02K1/17 , H02K1/2786
-
公开(公告)号：EP1237252A3
公开(公告)日：2002-11-06
申请号：EP02251261.0
申请日：2002-02-25
申请人： Black & Decker Inc.
发明人： Agnes, Michael , Ortt, Earl , Wang, Ren H. , Boyce, Allyn , Verbrugge, Brandon , Zhang, Jiaqi , Du, Hung T. , Walter, Richard T.
CPC分类号： H02K1/17 , H02K1/2786
摘要： A cylinder/magnet assembly for a field of an electric machine, such as a stator of a brush type motor or a rotor of a brushless motor, alternator or generator, is formed by inserting pre-formed magnets on a cylinder having anchors. Plastic is molded around the magnets and anchors to secure the magnets to a surface of the cylinder. In another aspect of the invention, magnets are inserted into magnet pockets of an assembly ring. The assembly ring is inserted into a cylinder and plastic molded around the assembly ring and magnets to secure the assembly ring and magnets to the cylinder. In another aspect of the invention, magnets are inserted in a first assembly ring which is then inserted in one side of a cylinder. A second assembly ring is inserted into the other side of the cylinder and mated to the first assembly ring. Plastic is molded around the assembly rings and magnets to secure them to the cylinder. In another aspect of the invention, magnets are inserted into magnet receiving pockets of a cylinder and plastic molded therearound. In another aspect of the invention, the north and south poles of a cylinder and magnet assembly have unequal distribution angles. In another aspect of the invention, the north and south poles a cylinder and magnet assembly have unequal numbers of magnets. In another aspect of the invention, the anchors are also formed as flux spreaders. In another aspect of the invention, flux spreaders are disposed on inner surfaces of the magnets of each pole of a cylinder and magnet assembly. In another aspect of the invention, the foregoing aspects are used in a stator of a motor. In another aspect of the invention, such a stator is used in a power tool.
-
公开(公告)号：EP1043829A3
公开(公告)日：2002-04-17
申请号：EP00302948.5
申请日：2000-04-07
申请人： Black & Decker Inc.
发明人： Du, Hung T.
IPC分类号： H02K23/36
摘要： A motor for a power tool adapted to be powered by either an AC power source or a DC power source. The motor 12 includes a permanent magnet field 30 having an armature 34 disposed within the field. The armature 34 includes a shaft 36 having a DC commutator 38 disposed at one end of the shaft. The DC commutator is coupled to a first armature winding. An AC commutator 42 is disposed coaxially over a portion of the DC commutator 38 and is coupled to a second armature winding 44. A first pair of brushes 46 are disposed on the DC commutator 38 for coupling power from a DC power source to the first armature winding 40. A second pair of brushes 48 couple rectified AC power to the second armature winding 44. A power module including an AC/DC selector switch 26 enables a user to select whether AC or DC power is to be used to power the tool.
-
公开(公告)号：EP1411626A3
公开(公告)日：2015-08-19
申请号：EP03023069.2
申请日：2003-10-14
申请人： Black & Decker Inc.
发明人： Gorti, Bhanuprasad V. , Du, Hung T.
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.
-
公开(公告)号：EP0935318B1
公开(公告)日：2004-08-11
申请号：EP99300836.6
申请日：1999-02-04
申请人： Black & Decker Inc.
发明人： Du, Hung T. , Hagan, Todd A.
CPC分类号： H02K5/148 , H01R39/381 , H01R39/383 , H02K13/10 , H02K23/18 , H02K2213/03
-
公开(公告)号：EP0935318A3
公开(公告)日：2001-06-27
申请号：EP99300836.6
申请日：1999-02-04
申请人： Black & Decker Inc.
发明人： Du, Hung T. , Hagan, Todd A.
CPC分类号： H02K5/148 , H01R39/381 , H01R39/383 , H02K13/10 , H02K23/18 , H02K2213/03
摘要： A brush assembly 20 for an electric motor 10 has a base 22 which secures the brush assembly to a motor spider 18. A brush housing 24 is associated with the base and has first and second open ends 42, 44. A brush 28 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 86 which is at a desired angle with respect to the brush axis. A biasing member 26 exerts a force on the brush to bias the brush into an electrical connection with a commutator 16. An electrical connector 30 electrically couples the brush to provide an electrical connection between the commutator and a power supply.
-
-
-
-
-
-
-
-
-
搜索结果
13 条记录 (耗时 0.009 秒)
