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    Brushless motor
    16.
    发明授权
    Brushless motor 有权

    公开(公告)号：US08179011B2

    公开(公告)日：2012-05-15

    申请号：US12638567

    申请日：2009-12-15

    Applicant: Yoshiaki Takemoto ,  Seiya Yokoyama ,  Yoji Yamada ,  Shigemasa Kato

    Inventor： Yoshiaki Takemoto ,  Seiya Yokoyama ,  Yoji Yamada ,  Shigemasa Kato

    IPC: H02K21/12

    CPC classification number: H02K1/276 ,  H02K21/16 ,  H02K29/03

    Abstract: A brushless motor including a stator having teeth and a rotor having magnetic pole portions is disclosed. The magnetic pole portions are arranged to have the same polarities as each other. The rotor includes gaps that function as magnetic resistance at circumferential ends of each of the magnetic pole portions so that an iron core portion is formed between the circumferentially adjacent magnetic pole portions. Magnetic flux of the magnetic pole portions passes through the iron core portion along the radial direction. The gaps include a first gap located on the leading end of the magnetic pole portion in the rotation direction of the rotor and a second gap located on the trailing end of the magnetic pole portion in the rotation direction of the rotor. The circumferential width of the first gap is set to be greater than the circumferential width of the second gap.

    MOTOR
    17.
    发明申请
    MOTOR 审中-公开
    发动机

    公开(公告)号：US20120098378A1

    公开(公告)日：2012-04-26

    申请号：US13274064

    申请日：2011-10-14

    Applicant: Yoshiaki TAKEMOTO ,  Toshihiro UCHIDA ,  Shigemasa KATO

    Inventor： Yoshiaki TAKEMOTO ,  Toshihiro UCHIDA ,  Shigemasa KATO

    IPC: H02K1/27

    CPC classification number: H02K29/03 ,  H02K1/276 ,  H02K21/16

    Abstract: A motor includes a rotor of 4n magnetic poles and a stator. The rotor includes a rotor core, 2n magnets embedded in the rotor core and 2n salient pole portions formed integrally with the rotor core. A gap is formed between each magnet and the circumferentially adjacent salient pole portion. The stator has 6n tooth portions arranged to face the magnets and the salient pole portions in the radial direction, and coils. Each coil is wound about one of the tooth portions. An electric angle α that corresponds to a mechanical angle α′ defined by a reference line that passes through a central axis of the rotor and the circumferential center position of each magnet, and a line that passes through the central axis of the rotor and the trailing end of each trailing gap, is set in the range of 90°

    Abstract translation: 电动机包括4n个磁极的转子和定子。 转子包括转子铁心，嵌入转子铁芯中的2n个磁体和与转子铁芯整体形成的2n个凸极部分。 在每个磁体和周向相邻的凸极部分之间形成间隙。 定子具有6n个齿部，其布置成在径向方向上面对磁体和凸极部分，并且线圈。 每个线圈围绕其中一个齿部分缠绕。 对应于通过转子的中心轴线的参考线限定的机械角α'和每个磁体的圆周中心位置的电角度α以及穿过转子的中心轴线的线 每个拖尾间隙的末端设​​定在90°<α<126°的范围内。

    MOTOR AND ROTOR
    18.
    发明申请
    MOTOR AND ROTOR 审中-公开
    电机和转子

    公开(公告)号：US20120001509A1

    公开(公告)日：2012-01-05

    申请号：US13168636

    申请日：2011-06-24

    Applicant: Yoji Yamada ,  Seiya Yokoyama ,  Keisuke Koide ,  Yoshiaki Takemoto ,  Shigemasa Kato ,  Toshihiro Uchida

    Inventor： Yoji Yamada ,  Seiya Yokoyama ,  Keisuke Koide ,  Yoshiaki Takemoto ,  Shigemasa Kato ,  Toshihiro Uchida

    IPC: H02K21/14

    CPC classification number: H02K1/24 ,  H02K1/274 ,  H02K1/2746 ,  H02K1/278 ,  H02K2213/03

    Abstract: A motor including a stator and a rotor. The stator includes teeth and windings. Each tooth has a distal portion defined by a radially inward side of the stator. The rotor, which is arranged inward in the radial direction from the stator, includes a rotor core, magnets, and salient poles. Each salient pole is separated by a void from the magnet that is adjacent in the circumferential direction. The distal portion of each tooth is longer than a radially outward side of each magnet.

    Abstract translation: 一种包括定子和转子的电动机。 定子包括齿和绕组。 每个齿具有由定子的径向内侧限定的远侧部分。 从定子向径向内侧配置的转子包括转子铁心，磁铁和凸极。 每个凸极由与圆周方向相邻的磁体的空隙分开。 每个齿的远端部分比每个磁体的径向外侧长。

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