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    CASE-BODY BONDED MAGNET, AND METHOD FOR PRODUCING SAME
    1.
    发明公开
    CASE-BODY BONDED MAGNET, AND METHOD FOR PRODUCING SAME 有权
    EINENGEHÄUSEKÖRPERGEBUNDENER磁铁VERFAHREN ZU SEINER HERSTELLUNG

    公开(公告)号：EP2562775A4

    公开(公告)日：2014-04-09

    申请号：EP11765926

    申请日：2011-04-05

    申请人： AICHI STEEL CORP

    发明人： HONKURA YOSHINOBU ,  MITARAI HIRONARI ,  MATSUOKA HIROSHI ,  KATO MASAYUKI ,  OKUMURA IKUZOU

    IPC分类号： H01F41/02 ,  H01F1/08 ,  H02K15/03

    CPC分类号： H01F41/0266 ,  B22F3/004 ,  B22F3/03 ,  B22F3/04 ,  B22F3/24 ,  B22F2003/248 ,  B22F2202/05 ,  B22F2998/10 ,  B29C43/003 ,  H01F1/01 ,  H01F1/0578 ,  H01F1/083 ,  H01F1/28 ,  H01F41/0273 ,  H01F41/028 ,  H02K15/03

    摘要： A production method for an anisotropic bonded magnet is provided which can improve the productivity for annular anisotropic bonded magnets and reduce the cost thereof. The production method for an anisotropic bonded magnet according to the present invention comprises: an alignment step that applies, from aligning magnetic pole bodies (13, 14) which include an even number of permanent magnets arranged uniformly around the outer periphery of an annular cavity (c) filled with magnetic raw material, aligning magnetic fields to cause rare-earth anisotropic magnet powder to be semi-radially aligned; a molding step that compressively molds the semi-radially aligned magnet raw material to obtain an annular compact; and a discharging step that discharges the compact from the annular cavity, and is characterized by further comprising a demagnetizing step that causes the aligning magnetic pole bodies to relatively move only in circumferential direction with respect to the compact after the molding step thereby to apply demagnetization magnetic fields to the compact, wherein the demagnetization magnetic fields are applied from the aligning magnetic pole bodies with opposite poles to those during the alignment step, and the demagnetization magnetic fields are in directions for cancelling the magnetization of the compact caused by the aligning magnetic fields. This allows considerable number of anisotropic bonded magnets to be produced in a short time.

    摘要翻译： 提供了一种用于各向异性粘结磁体的制造方法，其可以提高环状各向异性粘结磁体的生产率并降低其成本。 根据本发明的用于各向异性粘结磁体的制造方法包括：对准步骤，从对准包括均匀地排列在环形空腔的外周周围的偶数个永磁体的磁极体（13,14） c）填充磁性原料，对准磁场以使稀土各向异性磁体粉末半径向对齐; 模制步骤，对半径向对准的磁体原料进行压缩成型，得到环形压块; 以及从环形空腔排出压块的放电步骤，其特征在于还包括使成对磁极体在成型步骤之后相对于压块在圆周方向上相对移动的去磁步骤，从而施加消磁磁性 其中从对准磁极体的取向磁极体与取向步骤中的磁极相反地施加退磁磁场，并且退磁磁场在抵消由定向磁场引起的压实磁化的方向上。 这允许在短时间内产生相当数量的各向异性粘结磁体。

    METHOD FOR PRODUCING ANISOTROPIC BONDED MAGNET, AND DEVICE FOR PRODUCING SAME
    2.
    发明公开
    METHOD FOR PRODUCING ANISOTROPIC BONDED MAGNET, AND DEVICE FOR PRODUCING SAME 有权
    用于生产各向异性粘结磁体的制造装置

    公开(公告)号：EP2557577A4

    公开(公告)日：2014-04-02

    申请号：EP11765923

    申请日：2011-04-05

    申请人： AICHI STEEL CORP

    发明人： HONKURA YOSHINOBU ,  MITARAI HIRONARI ,  MATSUOKA HIROSHI ,  KATO MASAYUKI ,  OKUMURA IKUZOU

    IPC分类号： H01F41/02 ,  H01F1/08 ,  H02K15/03

    CPC分类号： H01F41/0266 ,  B22F3/004 ,  B22F3/03 ,  B22F3/04 ,  B22F3/24 ,  B22F2003/248 ,  B22F2202/05 ,  B22F2998/10 ,  B29C43/003 ,  H01F1/01 ,  H01F1/0578 ,  H01F1/083 ,  H01F1/28 ,  H01F41/0273 ,  H01F41/028 ,  H02K15/03

    摘要： A production method for an anisotropic bonded magnet is provided which can improve the productivity for annular anisotropic bonded magnets and reduce the cost thereof. The production method for an anisotropic bonded magnet according to the present invention comprises: an alignment step that applies, from aligning magnetic pole bodies (13, 14) which include an even number of permanent magnets arranged uniformly around the outer periphery of an annular cavity (c) filled with magnetic raw material, aligning magnetic fields to cause rare-earth anisotropic magnet powder to be semi-radially aligned; a molding step that compressively molds the semi-radially aligned magnet raw material to obtain an annular compact; and a discharging step that discharges the compact from the annular cavity, and is characterized by further comprising a demagnetizing step that causes the aligning magnetic pole bodies to relatively move only in circumferential direction with respect to the compact after the molding step thereby to apply demagnetization magnetic fields to the compact, wherein the demagnetization magnetic fields are applied from the aligning magnetic pole bodies with opposite poles to those during the alignment step, and the demagnetization magnetic fields are in directions for cancelling the magnetization of the compact caused by the aligning magnetic fields. This allows considerable number of anisotropic bonded magnets to be produced in a short time.

    THIN HYBRID MAGNETIZATION TYPE RING MAGNET, YOKE-EQUIPPED THIN HYBRID MAGNETIZATION TYPE RING MAGNET, AND BRUSH-LESS MOTOR
    3.
    发明公开
    THIN HYBRID MAGNETIZATION TYPE RING MAGNET, YOKE-EQUIPPED THIN HYBRID MAGNETIZATION TYPE RING MAGNET, AND BRUSH-LESS MOTOR 审中-公开
    RINGMAGNET DES D NN-HYBRIDMAGNETISIERUNGSTYPS，RINGMAGNET-D NN-HYBRIDMAGNETISIERUNGSTYP MIT JOCHAUSSTATTUNG UND B RSTENLOSER MOTOR

    公开(公告)号：EP1648073A4

    公开(公告)日：2007-08-22

    申请号：EP04770869

    申请日：2004-07-22

    申请人： AICHI STEEL CORP

    发明人： HONKURA YOSHINOBU ,  MATSUOKA HIROSHI ,  NAGAYA DAISUKE

    IPC分类号： H02K1/27 ,  H01F7/02 ,  H01F13/00 ,  H01F41/02 ,  H02K29/03

    CPC分类号： H01F7/0273 ,  H01F13/003 ,  H01F41/028 ,  H02K1/2733 ,  H02K29/03

    摘要： The present invention provides miniaturization of brushless motors and brush motors used in electric devices, a ring magnet which simultaneously achieves both high torque and a reduction in cogging torque, a ring magnet with yoke, and a brushless motor. The thin hybrid magnetized ring magnet of the present invention is structured of, in a ring magnet comprised of a plurality of magnetic poles, a radially magnetized main pole and an interface for which the interface of the adjoining main pole is polar anisotropic. When the thin hybrid magnetized ring magnet structured in this manner is applied to a brushless motor, in the case of radial magnetizing, the abrupt change in magnetic flux of the interface between the magnetic poles becomes smooth and cogging torque is greatly reduced due to polar anisotropic magnetization of the interface. At the same time, by polar anisotropically magnetizing the interface between the magnetic poles, magnetic flux is concentrated on the radially magnetized main pole, and in comparison to only radial magnetization, maximum surface magnetic flux improves and it is possible to attain high torque.

    摘要翻译： 本发明提供一种能够同时实现齿槽转矩的降低的电动设备，小型有刷电动机，环形磁铁，带轭铁的环形磁铁，无刷电动机等中使用的无刷电动机。 扭矩。 解决问题的手段一种薄型混合磁化型环形磁体，包括由多个磁极组成的环形磁体，所述多个磁极具有径向磁化的主磁极部分和边界部分，其中相邻主磁极部分的边界极性各向异性 磁化。 当具有这种结构的薄型混合磁化型环形磁体应用于无刷电动机时，由于边界部分的磁极各向异性磁化，径向磁化中磁极之间边界的突然磁通量变化平滑，从而显着 减少齿槽转矩。 与此同时，磁极之间的边界部分的磁极各向异性磁化导致主磁极部分中的磁通集中于径向磁化。 与单独径向磁化的情况相比，最大表面磁通得到改善，并且可以实现高转矩。