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公开(公告)号：US5469005A
公开(公告)日：1995-11-21
申请号：US227114
申请日：1994-04-13
申请人： Kiichi Asama , Hiroo Ashibe
发明人： Kiichi Asama , Hiroo Ashibe
摘要： A brushless motor comprises a rotor, a driving magnet which is rotated integrally with the rotor and a stator core disposed so as to oppose the driving magnet and being wound therearound with a coil. The stator core has salient poles with umbrella portions except for notched portions thereof. A magnetic sensor is disposed in the vicinity of the stator core in a first notched portion prepared by partly removing two corresponding adjacent salient-pole umbrella portions of the stator core for detecting a magnetic pole of the driving magnet. A second notched portion is formed by partly removing two corresponding adjacent salient-pole umbrella portions in a zone of the whole circumferential area of the stator core. The second notched portion is magnetically balanced with the first notched portion.
摘要翻译： 无刷电动机包括转子，与转子一体旋转的驱动磁体和与驱动磁体相对设置并以线圈缠绕的定子芯。 定子芯具有除了凹口部分之外的具有伞部分的凸极。 磁传感器设置在定子铁芯附近的第一切口部分中，该第一切口部分通过部分地去除用于检测驱动磁体的磁极的定子铁芯的两个对应的相邻的凸极伞部分来制备。 第二切口部分通过在定子芯的整个圆周区域的区域中部分地去除两个对应的相邻的凸极伞部而形成。 第二切口部分与第一切口部分磁性平衡。
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公开(公告)号：US5461271A
公开(公告)日：1995-10-24
申请号：US239337
申请日：1994-05-06
申请人： Kiichi Asama , Hiroo Ashibe
发明人： Kiichi Asama , Hiroo Ashibe
CPC分类号： H02K5/1735 , H02K1/187
摘要： A brushless motor comprises a bearing rotatably supporting a spindle and a rotor mounted on the spindle. A drive magnet rotates integrally with the rotor. A stator core is disposed to face the drive magnet and has a drive coil wound thereon. A base plate is included on which the stator core is mounted. A bearing holder is provided for holding the bearing, which engages the base plate. A fixing plate is arranged for positioning and fixing the bearing holder and the stator core on the base plate. A fastening member is arranged for fastening the fixing plate to the base plate with bearing holder disposed between the base plate and the fixing plate and with the fixing plate engaged with the bearing holder.
摘要翻译： 无刷电动机包括可旋转地支撑主轴的轴承和安装在主轴上的转子。 驱动磁体与转子一体旋转。 定子铁芯设置成与驱动磁体相对并且具有缠绕在其上的驱动线圈。 其中包括定子芯安装在其上的基板。 设置有用于保持与基板接合的轴承的轴承座。 固定板被布置用于将轴承座和定子芯定位并固定在基板上。 紧固构件被布置成用于将固定板紧固到基板上，其中轴承座设置在基板和固定板之间，并且固定板与轴承座接合。
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公开(公告)号：US4350937A
公开(公告)日：1982-09-21
申请号：US174429
申请日：1980-08-01
申请人： Kiyoshi Miyazaki , Tsuneto Takeuchi , Jinichi Ito , Hiroo Ashibe
发明人： Kiyoshi Miyazaki , Tsuneto Takeuchi , Jinichi Ito , Hiroo Ashibe
CPC分类号： H02P7/2885 , Y10S388/934
摘要： A motor speed control device for a small DC motor in which the speed of rotation of the motor is maintained stable during ambient temperature changes and changes in the load applied to the motor. A temperature compensation resistor is coupled in series with a voltage divider circuit and the combination thereof coupled across the motor. A motor control circuit is provided having first through fourth control terminals. The first control terminal is coupled to the junction between the temperature compensation resistor and the voltage divider circuit, the second control terminal to the voltage division point, the third control terminal to the junction between the voltage divider circuit and the motor, and the fourth control terminal is coupled to ground. The motor control circuit includes an error detecting circuit having inputs coupled to the first and second control terminals with a voltage reference source coupled in series with the first input terminal to the error detecting circuit. The output of the error detecting circuit drives both shunt transistors coupled between the first and fourth control terminals and a drive transistor means coupled between the first and fourth control terminals.
摘要翻译： 一种用于小直流电动机的电动机速度控制装置，其中电动机的转速在环境温度变化和施加到电动机的负载变化时保持稳定。 温度补偿电阻器与分压器电路串联耦合，并且其组合耦合在电动机两端。 提供具有第一至第四控制端的电动机控制电路。 第一控制端子耦合到温度补偿电阻器和分压器电路之间的接点，第二控制端子连接到分压点，第三控制端子连接到分压器电路和电动机之间的连接点，以及第四控制端子 终端耦合到地面。 马达控制电路包括误差检测电路，其具有与第一和第二控制端子耦合的输入，其具有与第一输入端串联耦合到误差检测电路的电压参考源。 误差检测电路的输出驱动耦合在第一和第四控制端之间的分流晶体管和耦合在第一和第四控制端之间的驱动晶体管装置。
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