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1. 发明授权

US08054024B2 Brushless motor 有权
标题翻译：无刷电机
公开(公告)号：US08054024B2
公开(公告)日：2011-11-08
申请号：US12328001
申请日：2008-12-04
申请人： Shigeo Hayashi , Yosuke Kawano , Satoshi Komatsu
发明人： Shigeo Hayashi , Yosuke Kawano , Satoshi Komatsu
IPC分类号： H02P6/18
CPC分类号： H02P6/18 , Y10S388/923
摘要： A brushless motor driven by a sensorless driving circuit includes a rotating body capable of being rotated about a center axis; a rotor magnet arranged coaxially with the rotating body; a stator disposed opposite the rotor magnet; and at least one coil wound around the stator. The brushless motor is driven according to a signal containing a third harmonic component relative to a fundamental wave component in an induced electromotive force. Further, an amplitude ratio of the third harmonic component to the fundamental wave component in the induced electromotive force generated in the coil preferably is about 1% or higher.
摘要翻译：由无传感器驱动电路驱动的无刷电动机包括能够围绕中心轴旋转的旋转体; 与旋转体同轴设置的转子磁体; 与转子磁体相对设置的定子; 以及缠绕在定子上的至少一个线圈。根据感应电动势中相对于基波分量的三次谐波分量的信号来驱动无刷电动机。此外，在线圈中产生的感应电动势中的三次谐波分量与基波分量的振幅比优选为约1％以上。

2. 发明授权

US08082561B2 Motor provided with chucking device and disk driving device equipped with the motor 有权
标题翻译：电机配有夹紧装置和装有电机的磁盘驱动装置
公开(公告)号：US08082561B2
公开(公告)日：2011-12-20
申请号：US12252483
申请日：2008-10-16
申请人： Hitoshi Takaki , Shigeo Hayashi , Yusuke Iwai , Nobuaki Yasumoto , Yosuke Kawano
发明人： Hitoshi Takaki , Shigeo Hayashi , Yusuke Iwai , Nobuaki Yasumoto , Yosuke Kawano
IPC分类号： G11B17/00
CPC分类号： H02K7/09 , G11B19/2009 , H02K7/085 , H02K21/22 , H02N13/00
摘要： A motor includes a rotating body including a magnet, and a fixed body including a stator. The stator includes a stator core having an annular core back portion with an upper and a lower surface, and a plurality of circumferentially spaced-apart tooth portions extending from the core back portion in a direction away from the rotational axis, and a plurality of coils provided by winding a conductive wire around the tooth portions of the stator core with multiple turns. The rotor holder is arranged axially above the stator to cover the stator. Further, an annular or arc-shaped attracting magnet arranged to attract the rotor holder toward the stator is arranged radially inwardly of the core back portion, the attracting magnet having an upper surface axially facing toward the rotor holder, and a lower surface arranged axially below the upper surface of the core back portion of the stator core.
摘要翻译：电动机包括具有磁体的旋转体和具有定子的固定体。定子包括具有上下表面的环形芯背部的定子芯和从远离旋转轴线的方向从芯背部延伸的多个周向间隔开的齿部，以及多个线圈通过绕多个匝的定子芯的齿部部分缠绕导电线来提供。转子保持器轴向地布置在定子上方以覆盖定子。此外，设置成将转子保持器朝向定子吸引的环形或弧形吸引磁体布置在芯部后部的径向内侧，吸引磁体具有轴向面向转子保持器的上表面，并且下表面轴向地布置定子芯的芯部后部的上表面。

3. 发明授权

US08018107B2 Brushless motor having a substantially flat attachment plate and a circuit board, and disk drive apparatus provided with the same 有权
标题翻译：具有基本上平坦的附接板和电路板的无刷电动机以及具有该电路板的盘驱动装置
公开(公告)号：US08018107B2
公开(公告)日：2011-09-13
申请号：US12416214
申请日：2009-04-01
申请人： Nobuaki Yasumoto , Hitoshi Takaki , Masahiro Yamada , Yosuke Kawano
发明人： Nobuaki Yasumoto , Hitoshi Takaki , Masahiro Yamada , Yosuke Kawano
IPC分类号： H02K5/04 , H02K5/00
CPC分类号： H02K5/04 , G11B19/2009 , H02K11/33 , H05K1/189
摘要： A brushless motor includes a substantially flat attachment plate and a circuit board. The attachment plate includes a plurality of motor attachment portions and a base portion arranged to interconnect the motor attachment portions. The circuit board is arranged on an upper surface of the base portion and includes a first area to which electronic parts are attached. The upper surfaces of the motor attachment portions are arranged higher than the upper surface of the base portion. The height of the upper surface of the circuit board in the first area is substantially equal to or greater than the height of the upper surfaces of the motor attachment portions.
摘要翻译：无刷电动机包括基本平坦的附接板和电路板。附接板包括多个马达安装部和布置成互连马达安装部的基部。电路板设置在基部的上表面上，并且包括附接有电子部件的第一区域。马达安装部分的上表面布置成高于基部的上表面。第一区域中电路板的上表面的高度基本上等于或大于马达安装部分的上表面的高度。

4. 发明申请

US20090252015A1 BRUSHLESS MOTOR AND DISK DRIVE APPARATUS PROVIDED WITH THE SAME 有权
标题翻译：无刷电动机和磁碟驱动装置
公开(公告)号：US20090252015A1
公开(公告)日：2009-10-08
申请号：US12416214
申请日：2009-04-01
申请人： Nobuaki YASUMOTO , Hitoshi TAKAKI , Masahiro YAMADA , Yosuke KAWANO
发明人： Nobuaki YASUMOTO , Hitoshi TAKAKI , Masahiro YAMADA , Yosuke KAWANO
IPC分类号： G11B7/00 , H02K5/04
CPC分类号： H02K5/04 , G11B19/2009 , H02K11/33 , H05K1/189
摘要： A brushless motor includes a substantially flat attachment plate and a circuit board. The attachment plate includes a plurality of motor attachment portions and a base portion arranged to interconnect the motor attachment portions. The circuit board is arranged on an upper surface of the base portion and includes a first area to which electronic parts are attached. The upper surfaces of the motor attachment portions are arranged higher than the upper surface of the base portion. The height of the upper surface of the circuit board in the first area is substantially equal to or greater than the height of the upper surfaces of the motor attachment portions.
摘要翻译：无刷电动机包括基本平坦的附接板和电路板。附接板包括多个马达安装部和布置成互连马达安装部的基部。电路板设置在基部的上表面上，并且包括附接有电子部件的第一区域。马达安装部分的上表面布置成高于基部的上表面。第一区域中电路板的上表面的高度基本上等于或大于马达安装部分的上表面的高度。

5. 发明申请

US20090096303A1 MOTOR PROVIDED WITH CHUCKING DEVICE AND DISK DRIVING DEVICE EQUIPPED WITH THE MOTOR 有权
标题翻译：带电动机的电动马达和电动马达驱动装置
公开(公告)号：US20090096303A1
公开(公告)日：2009-04-16
申请号：US12252483
申请日：2008-10-16
申请人： Hitoshi TAKAKI , Shigeo HAYASHI , Yusuke IWAI , Nobuaki YASUMOTO , Yosuke KAWANO
发明人： Hitoshi TAKAKI , Shigeo HAYASHI , Yusuke IWAI , Nobuaki YASUMOTO , Yosuke KAWANO
IPC分类号： H02K7/09
CPC分类号： H02K7/09 , G11B19/2009 , H02K7/085 , H02K21/22 , H02N13/00
摘要： A motor includes a rotating body including a magnet, and a fixed body including a stator. The stator includes a stator core having an annular core back portion with an upper and a lower surface, and a plurality of circumferentially spaced-apart tooth portions extending from the core back portion in a direction away from the rotational axis, and a plurality of coils provided by winding a conductive wire around the tooth portions of the stator core with multiple turns. The rotor holder is arranged axially above the stator to cover the stator. Further, an annular or arc-shaped attracting magnet arranged to attract the rotor holder toward the stator is arranged radially inwardly of the core back portion, the attracting magnet having an upper surface axially facing toward the rotor holder, and a lower surface arranged axially below the upper surface of the core back portion of the stator core.
摘要翻译：电动机包括具有磁体的旋转体和具有定子的固定体。定子包括具有上下表面的环形芯背部的定子芯和从远离旋转轴线的方向从芯背部延伸的多个周向间隔开的齿部，以及多个线圈通过绕多个匝的定子芯的齿部部分缠绕导电线来提供。转子保持器轴向地布置在定子上方以覆盖定子。此外，设置成将转子保持器朝向定子吸引的环形或弧形吸引磁体布置在芯部后部的径向内侧，吸引磁体具有轴向面向转子保持器的上表面，并且下表面轴向地布置定子芯的芯部后部的上表面。

6. 发明申请

US20090146598A1 BRUSHLESS MOTOR 有权
标题翻译：无刷电机
公开(公告)号：US20090146598A1
公开(公告)日：2009-06-11
申请号：US12328001
申请日：2008-12-04
申请人： Shigeo HAYASHI , Yosuke KAWANO , Satoshi KOMATSU
发明人： Shigeo HAYASHI , Yosuke KAWANO , Satoshi KOMATSU
IPC分类号： H02P6/18
CPC分类号： H02P6/18 , Y10S388/923
摘要： A brushless motor driven by a sensorless driving circuit includes a rotating body capable of being rotated about a center axis; a rotor magnet arranged coaxially with the rotating body; a stator disposed opposite the rotor magnet; and at least one coil wound around the stator. The brushless motor is driven according to a signal containing a third harmonic component relative to a fundamental wave component in an induced electromotive force. Further, an amplitude ratio of the third harmonic component to the fundamental wave component in the induced electromotive force generated in the coil preferably is about 1% or higher.
摘要翻译：由无传感器驱动电路驱动的无刷电动机包括能够围绕中心轴旋转的旋转体; 与旋转体同轴设置的转子磁体; 与转子磁体相对设置的定子; 以及缠绕在定子上的至少一个线圈。根据感应电动势中相对于基波分量的三次谐波分量的信号来驱动无刷电动机。此外，在线圈中产生的感应电动势中的三次谐波分量与基波分量的振幅比优选为约1％以上。

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