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7 条记录 (耗时 0.016 秒)

    COMPOSITE MAGNETIC CORE AND MAGNETIC ELEMENT
    1.
    发明申请
    COMPOSITE MAGNETIC CORE AND MAGNETIC ELEMENT 审中-公开

    公开(公告)号：US20170169924A1

    公开(公告)日：2017-06-15

    申请号：US15445649

    申请日：2017-02-28

    申请人： NTN CORPORATION

    发明人： Ikuo UEMOTO ,  Shinji MIYAZAKI ,  Takuji HARANO

    IPC分类号： H01F1/37 ,  H01F27/28 ,  H01F27/255

    CPC分类号： H01F1/37 ,  H01F3/08 ,  H01F3/10 ,  H01F17/04 ,  H01F27/255 ,  H01F27/2823 ,  H01F41/005 ,  H01F41/0246 ,  H01F2003/106

    摘要： The present invention provides a composite magnetic core, containing magnetic powders poor in its moldability, which can be configured arbitrarily and has a magnetic characteristic excellent in direct current superimposition characteristics and a magnetic element composed of the composite magnetic core and a coil wound around the circumference thereof. A compressed magnetic body (2) obtained by compression-molding magnetic powders is combined with an injection-molded magnetic body (3) obtained by mixing a binding resin with magnetic powders having surfaces thereof electrically insulated and by injection-molding a mixture of the magnetic powders and the binding resin. The compressed magnetic body (2) is press-fitted into the injection-molded magnetic body (3) or bonded thereto at a combining portion thereof to obtain the combined body. The combined body is composed of the injection-molded magnetic body (3) constituting a housing in which the compressed magnetic body (2) is disposed.

    MAGNETIC CORE COMPONENT AND CHIP INDUCTOR
    2.
    发明申请
    MAGNETIC CORE COMPONENT AND CHIP INDUCTOR 审中-公开

    公开(公告)号：US20180233268A1

    公开(公告)日：2018-08-16

    申请号：US15516411

    申请日：2015-09-18

    申请人： NTN CORPORATION

    发明人： Kayo SAKAI ,  Eiichirou SHIMAZU ,  Shinji MIYAZAKI ,  Takayuki ODA

    IPC分类号： H01F27/255 ,  H01F27/26 ,  H01F27/28 ,  H01F27/06

    CPC分类号： H01F27/255 ,  H01F27/06 ,  H01F27/263 ,  H01F27/2823

    摘要： To provide a magnetic core component capable of suppressing leakage flux while suppressing the number of molds required at the time of molding, and a chip inductor using the same. A magnetic core component (1) includes a winding shaft portion (1a) for winding a winding wire (4); is formed by joining two half-members (2, 3), which are magnetic bodies and have the same shape; includes a leg portion (1b) arranged at both ends of the winding shaft portion (1a) and a cover portion (1c) arranged across one end of the leg portions in parallel with the winding shaft portion (1a); and has a joining surface (1d) which is formed in the winding shaft portion (1a) and the cover portion (1c) and which is a surface non-perpendicular to an axial direction of the winding shaft portion (1a).

    MAGNETIC ELEMENT
    4.
    发明申请
    MAGNETIC ELEMENT 审中-公开

    公开(公告)号：US20170110233A1

    公开(公告)日：2017-04-20

    申请号：US15128893

    申请日：2015-03-18

    申请人： NTN CORPORATION

    发明人： Kayo SAKAI ,  Eiichirou SHIMAZU ,  Shinji MIYAZAKI ,  Takayuki ODA

    IPC分类号： H01F27/255 ,  H01F27/28

    CPC分类号： H01F27/255 ,  H01F1/14733 ,  H01F1/14791 ,  H01F3/10 ,  H01F17/043 ,  H01F27/2823 ,  H01F37/00 ,  H01F2003/106

    摘要： The present invention provides a magnetic element in which iron loss-caused heat generation is restrained and which can be produced with a high productivity. The magnetic element has a magnetic body which allows a magnetic flux generated by a coil (4) to pass therethrough. The magnetic body is a combined body formed by combining two halves, of the magnetic body composed of the compression molded and injection molded bodies, obtained by bisection made in an axial direction of the coil with each other. A compression molded magnetic body (2) is disposed at a portion generating iron loss-caused heat to a high extent or a portion inferior in heat dissipation performance. An injection molded magnetic body (3) is disposed at a portion other than the portion where the compression molded magnetic body is disposed. The compression molded and injection molded magnetic bodies are combined with each other.

    COMPRESSION-BONDED MAGNET WITH CASE AND METHOD FOR PRODUCING THE SAME
    5.
    发明申请
    COMPRESSION-BONDED MAGNET WITH CASE AND METHOD FOR PRODUCING THE SAME 有权
    带有壳体的压电粘合磁体及其制造方法

    公开(公告)号：US20160314887A1

    公开(公告)日：2016-10-27

    申请号：US15104224

    申请日：2014-12-10

    申请人： NTN CORPORATION

    发明人： Shinji MIYAZAKI ,  Takuji HARANO ,  Tatsuo NAKAJIMA

    IPC分类号： H01F7/02 ,  H01F41/02 ,  H01F1/057

    CPC分类号： H01F7/021 ,  B22F3/02 ,  B23K35/3613 ,  C22C33/02 ,  C22C38/00 ,  C22C2202/02 ,  G01D5/14 ,  G01D5/145 ,  H01F1/0576 ,  H01F1/0578 ,  H01F7/0221 ,  H01F41/026 ,  H01F41/0266

    摘要： There is provided a compression-bonded magnet with a case, which can realize high magnetic properties, high corrosion resistance and high durability strength even at low cost. The compression-bonded magnet with a case is a compression-bonded magnet with a case 1, comprising: a compression-bonded magnet 2 comprising a rare earth magnet powder such as an isotropic Nd—Fe—B magnet powder and a resin binder of a thermosetting resin; a case 3 for inserting the compression-bonded magnet 2; and a sealing member 4, wherein the compression-bonded magnet 2 is formed by compression-molding a mixture comprising the rare earth magnet powder and the resin binder into a green compact and curing the resin binder contained in the green compact, the rare earth magnet powder is contained in a large amount with respect to the entire compression-bonded magnet (for example, in a volume ratio of 85% to 90%), the sealing member 4 is fixed at an insertion opening part 3a of the case 3, and the compression-bonded magnet 2 is hermetically sealed by the sealing member 4 and the case 3.

    摘要翻译： 提供了一种具有壳体的压缩粘合磁体，即使以低成本也能实现高磁性，高耐腐蚀性和高耐久强度。 具有壳体的压缩粘合磁体是具有壳体1的压缩粘合磁体，包括：压电粘合磁体2，其包括诸如各向同性Nd-Fe-B磁体粉末的稀土磁体粉末和 热固性树脂; 用于插入压缩粘结磁体2的壳体3; 以及密封部件4，其中，压缩粘合磁体2通过将包含稀土类磁体粉末和树脂粘合剂的混合物压缩成型为生坯而形成，并使包含在生坯中的树脂粘合剂固化，稀土磁体 相对于整个压缩粘结磁体（例如，体积比为85％至90％），粉末被大量包含，密封构件4固定在壳体3的插入开口部分3a处，并且 压缩粘结磁体2被密封构件4和壳体3气密地密封。