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    • 3. 发明申请
    • SMALL-SIZED MOTOR HAVING RING-SHAPED FIELD MAGNET
    • 具有环形磁场的小尺寸电机
    • US20080030095A1
    • 2008-02-07
    • US11833475
    • 2007-08-03
    • Satoshi IizukaMitsushi Kinoshita
    • Satoshi IizukaMitsushi Kinoshita
    • H02K1/27
    • H02K1/17H02K23/04
    • A small-sized motor includes a field magnet attached to an inner circumferential surface of a metallic motor casing and having four or more magnetic poles. The field magnet is formed of a single ring-shaped magnet member having a predetermined thickness with respect to the radial direction and a predetermined length with respect to the thrust direction. At each of portions between the magnetic poles formed through magnetization, the magnet member has a thin portion having a reduced thickness with respect to the radial direction, the thin portion being formed by cutting the magnet member from the radially outward side. The magnetization is performed in the radial direction so as to alternately form S poles and N poles in the circumferential direction. At each of portions between the magnetic poles, the magnet member may have cut portions formed at opposite end portions of the magnet member with respect to the thrust direction.
    • 小型电动机包括附接到金属电动机壳体的内周面并具有四个或更多个磁极的场磁体。 场磁体由相对于径向具有预定厚度并且相对于推力方向具有预定长度的单个环形磁体构件形成。 在通过磁化形成的磁极之间的每个部分,磁体部件具有相对于径向减小的厚度的薄部分,薄部分通过从径向向外侧切割磁体部件而形成。 在径向上进行磁化,以便在圆周方向上交替地形成S极和N极。 在磁极之间的每个部分处,磁体构件可以具有相对于推力方向形成在磁体构件的相对端部处的切割部分。
    • 8. 发明授权
    • Small-sized motor having ring-shaped field magnet
    • 小型电机具有环形磁场
    • US07732963B2
    • 2010-06-08
    • US11833475
    • 2007-08-03
    • Satoshi IizukaMitsushi Kinoshita
    • Satoshi IizukaMitsushi Kinoshita
    • H02K21/26H02K21/38H02K23/04H02K1/17
    • H02K1/17H02K23/04
    • A small-sized motor includes a field magnet attached to an inner circumferential surface of a metallic motor casing and having four or more magnetic poles. The field magnet is formed of a single ring-shaped magnet member having a predetermined thickness with respect to the radial direction and a predetermined length with respect to the thrust direction. At each of portions between the magnetic poles formed through magnetization, the magnet member has a thin portion having a reduced thickness with respect to the radial direction, the thin portion being formed by cutting the magnet member from the radially outward side. The magnetization is performed in the radial direction so as to alternately form S poles and N poles in the circumferential direction. At each of portions between the magnetic poles, the magnet member may have cut portions formed at opposite end portions of the magnet member with respect to the thrust direction.
    • 小型电动机包括附接到金属电动机壳体的内周面并具有四个或更多个磁极的场磁体。 场磁体由相对于径向具有预定厚度并且相对于推力方向具有预定长度的单个环形磁体构件形成。 在通过磁化形成的磁极之间的每个部分,磁体部件具有相对于径向减小的厚度的薄部分,薄部分通过从径向向外侧切割磁体部件而形成。 在径向上进行磁化,以便在圆周方向上交替地形成S极和N极。 在磁极之间的每个部分处,磁体构件可以具有相对于推力方向形成在磁体构件的相对端部处的切割部分。