公开(公告)号：US20110241811A1

公开(公告)日：2011-10-06

申请号：US13132317

申请日：2009-12-03

申请人： Kohei Ihara ,  Michiya Kume ,  Muneo Yamamoto

发明人： Kohei Ihara ,  Michiya Kume ,  Muneo Yamamoto

IPC分类号： H01F7/02 ,  B22F3/03

CPC分类号： H01F41/0266 ,  H01F7/0205 ,  H01F13/003 ,  H01F41/0273 ,  H02K15/03

摘要： A cylindrical bonded magnet is provided which is multipolar-magnetized in the axial direction and can be produced with high productivity. The cylindrical bonded magnet includes magnetic powder and resin. The cylindrical bond magnet is an integrally formed member. The cylindrical bond magnet is magnetized so that a plurality of N and S poles are alternately provided in the axial direction. In the cylindrical bonded magnet, a totally even number of at least four N and S poles are alternately provided. The surface magnetic flux density distribution has a substantially sinusoidal wave with the both ends of the sinusoidal wave corresponding to nodes when the surface magnetic flux of the cylindrical bonded magnet is measured as viewed from the side surface of the cylindrical bond magnet along the axial direction.

摘要翻译： 提供了一种圆柱形粘结磁体，其在轴向方向上被多极化，并且可以以高生产率制造。 圆柱形粘结磁体包括磁粉和树脂。 圆柱形粘结磁体是整体形成的部件。 圆柱形接合磁体被磁化，使得在轴向上交替地设置多个N极和S极。 在圆柱形粘结磁体中，交替地设置至少四个N极和S极的全偶数个。 当圆柱形粘结磁体的表面磁通量从圆柱形粘结磁体的侧表面沿着轴向方向观察时，表面磁通密度分布具有基本正弦波，正弦波的两端对应于节点。

公开(公告)号：US5402024A

公开(公告)日：1995-03-28

申请号：US41217

申请日：1993-03-31

申请人： Akihiko Watanabe ,  Sotomitsu Maeda ,  Hiroshi Dohi ,  Muneo Yamamoto ,  Yukio Honda ,  Hiromitsu Nakano ,  Masahiro Yasohara ,  Hisataka Kato

发明人： Akihiko Watanabe ,  Sotomitsu Maeda ,  Hiroshi Dohi ,  Muneo Yamamoto ,  Yukio Honda ,  Hiromitsu Nakano ,  Masahiro Yasohara ,  Hisataka Kato

IPC分类号： H02K1/27 ,  H02K21/12

CPC分类号： H02K1/2733

摘要： With a view to reduce vibrations generated by a motor and improve resistance to heat, reliability and vibration isolation properties without increasing the cost or the number of manufacturing steps in a rotor for a permanent-magnet motor, a rotor core is formed of an outer peripheral portion by which the permanent magnet is fixed, and a central portion by which a shaft is fixed, a clearance is provided between the outer peripheral portion and the central portion, and the outer peripheral portion is connected to the central portion by means of a plurality of fastening members. Thus, a rotor having excellent vibration isolation properties can be obtained. Since the rotor core is formed of laminated iron plates on which the outer peripheral portion, the central portion and the fastening members are all formed as one piece, resistance to heat, reliability and the vibration isolation properties can be enhanced without increasing the cost or the number of manufacturing steps.

摘要翻译： 为了减少电动机产生的振动，提高耐热性，可靠性和隔振性能，而不增加用于永磁电动机的转子的成本或制造步骤的数量，转子铁芯由外周 固定永磁体的部分和固定轴的中心部分，在外周部分和中心部分之间设置间隙，并且外周部分通过多个连接到中心部分 的紧固件。 因此，可以获得具有优异的隔振性能的转子。 由于转子铁芯由外周部分，中心部分和紧固部件全部形成为一体的层压铁板形成，因此可以在不增加成本的情况下提高耐热性，可靠性和隔振性能 制造步骤数量。

公开(公告)号：US5300866A

公开(公告)日：1994-04-05

申请号：US908813

申请日：1992-07-08

申请人： Masahiro Yasohara ,  Hiroyuki Oku ,  Hiromitsu Nakano ,  Hiroshi Dohi ,  Muneo Yamamoto

发明人： Masahiro Yasohara ,  Hiroyuki Oku ,  Hiromitsu Nakano ,  Hiroshi Dohi ,  Muneo Yamamoto

IPC分类号： H02P6/06 ,  H02P7/29 ,  H02P6/02

CPC分类号： H02P6/06

摘要： A drive apparatus for use in a brushless motor with a rotor and a drive coil assembly. The drive apparatus comprises an energization-state instruction circuit for generating an energization-state instruction signal instructing an energization state of the drive coil assembly on the basis of the position detection signal indicative of a position of the rotor and an energization switching circuit for outputting an energization switching signal to successively switch the energization state of the drive coil assembly in accordance with the energization-state instruction signal and a duty control signal. A power circuit is coupled to a direct-current voltage source and is responsive to the energization switching signal so as to energize the drive coil assembly by means of a direct-current voltage from the direct-current voltage source in accordance with the energization switching signal therefrom. A duty control circuit is responsive to a speed instruction signal from a speed instruction circuit and a motor speed signal from a speed detecting circuit for outputting the duty control signal to the energization switching circuit so as to control a duty ratio of the energization-state instruction signal on the basis of the duty control signal so as to output the energization switching signal to be inputted to the power circuit.

摘要翻译： 一种用于具有转子和驱动线圈组件的无刷电动机的驱动装置。 驱动装置包括：通电状态指示电路，用于根据表示转子位置的位置检测信号，产生指示驱动线圈组的通电状态的通电状态指示信号;以及通电切换电路， 通电切换信号，根据通电状态指示信号和占空比控制信号依次切换驱动线圈组的通电状态。 电源电路耦合到直流电压源并且响应于通电切换信号，以便根据通电切换信号通过来自直流电压源的直流电压来激励驱动线圈组件 由此。 占空比控制电路响应来自速度指令电路的速度指令信号和来自速度检测电路的电机速度信号，用于将占空比控制信号输出到通电切换电路，以便控制通电状态指令的占空比 信号，以输出要输入到电源电路的通电切换信号。

公开(公告)号：US08643453B2

公开(公告)日：2014-02-04

申请号：US13132317

申请日：2009-12-03

申请人： Kohei Ihara ,  Michiya Kume ,  Muneo Yamamoto

发明人： Kohei Ihara ,  Michiya Kume ,  Muneo Yamamoto

IPC分类号： H01F7/02 ,  H01F7/00 ,  H02K21/00

CPC分类号： H01F41/0266 ,  H01F7/0205 ,  H01F13/003 ,  H01F41/0273 ,  H02K15/03

摘要： A cylindrical bonded magnet is provided which is multipolar-magnetized in the axial direction and can be produced with high productivity. The cylindrical bonded magnet includes magnetic powder and resin. The cylindrical bond magnet is an integrally formed member. The cylindrical bond magnet is magnetized so that a plurality of N and S poles are alternately provided in the axial direction. In the cylindrical bonded magnet, a totally even number of at least four N and S poles are alternately provided. The surface magnetic flux density distribution has a substantially sinusoidal wave with the both ends of the sinusoidal wave corresponding to nodes when the surface magnetic flux of the cylindrical bonded magnet is measured as viewed from the side surface of the cylindrical bond magnet along the axial direction.

摘要翻译： 提供了一种圆柱形粘结磁体，其在轴向方向上被多极化，并且可以以高生产率制造。 圆柱形粘结磁体包括磁粉和树脂。 圆柱形粘结磁体是整体形成的部件。 圆柱形接合磁体被磁化，使得在轴向上交替地设置多个N极和S极。 在圆柱形粘结磁体中，交替地设置至少四个N极和S极的全偶数个。 当圆柱形粘结磁体的表面磁通量从圆柱形粘结磁体的侧表面沿着轴向方向观察时，表面磁通密度分布具有基本正弦波，正弦波的两端对应于节点。

公开(公告)号：US06800979B2

公开(公告)日：2004-10-05

申请号：US10381780

申请日：2003-03-28

申请人： Hisataka Kato ,  Muneo Yamamoto ,  Noriyoshi Nishiyama

发明人： Hisataka Kato ,  Muneo Yamamoto ,  Noriyoshi Nishiyama

IPC分类号： H02K100

CPC分类号： H02K29/03 ,  H02K7/14

摘要： The object of the present invention is to provide a low-noise and low-vibration brushless motor and an electric applicance and a vehicle which have the brushless motor and increase in quietness, by optimizing a ratio of the number of poles on a rotor to the number of slots on a stator, the ratio being suitable for a driving circuit. The present invention is a brushless motor constituted by ten-pole rotor (1), a stator (3) having (12) slots (2) and making three-phase connection to the slots (2), and a driving circuit (5) for applying three-phase full-wave current to the stator (3). Further, the conduction width of the driving circuit is set at an electrical angle of 135 to 180°.