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    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

    Applicant: NTN CORPORATION

    Inventor： Ikuo UEMOTO ,  Shinji MIYAZAKI ,  Takuji HARANO

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

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

    Abstract: 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 AND METHOD FOR MANUFACTURING SAME
    2.
    发明申请
    MAGNETIC CORE AND METHOD FOR MANUFACTURING SAME 审中-公开

    公开(公告)号：US20170297096A1

    公开(公告)日：2017-10-19

    申请号：US15512823

    申请日：2015-09-17

    Applicant: NTN CORPORATION

    Inventor： Takuji HARANO ,  Hiroyuki NODA

    IPC: B22F1/00 ,  H01F1/24 ,  B32B27/26 ,  C08K9/02 ,  B32B27/38 ,  H01F41/02 ,  H01F1/33 ,  H01F3/08

    Abstract: The present invention provides a magnetic core having insulating properties, and a method for manufacturing the magnetic core. Provided is a magnetic core manufactured by compression molding and subsequent thermal curing of an iron-based soft magnetic powder having a resin coating formed on particle surfaces thereof. The iron-based soft magnetic powder is one in which the particle surfaces have been coated with an inorganic insulator; the resin coating is an uncured resin coating formed by dry blending the powder with a thermosetting resin at a temperature equal to or greater than the softening point of the thermosetting resin and lower than the thermal curing initiation temperature of the resin; the compression molding is carried out by using a mold to produce a compression molded body; and the thermal curing is carried out at a temperature equal to or greater than the thermal curing initiation temperature of the thermosetting resin.

    SLIDING MEMBER
    3.
    发明申请
    SLIDING MEMBER 审中-公开

    公开(公告)号：US20190226525A1

    公开(公告)日：2019-07-25

    申请号：US16337194

    申请日：2017-09-28

    Applicant: NTN CORPORATION

    Inventor： Takuji HARANO ,  Toshihiko MOURI

    IPC: F16C33/20 ,  B22F3/26 ,  B22F7/00 ,  B22F7/06 ,  B22F5/10 ,  B22F3/12

    Abstract: A sliding member having a sliding surface that is at least partially formed of a surface of a lubricating member is provided. The sliding member includes: a base body as a sintered body of a compact containing metal powder, the base body being integrated with the lubricating member; and the lubricating member as an injection molded product of a resin composition containing a polyarylene sulfide-based resin and a carbon material.

    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

    Applicant: NTN CORPORATION

    Inventor： Shinji MIYAZAKI ,  Takuji HARANO ,  Tatsuo NAKAJIMA

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

    CPC classification number: 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

    Abstract: 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.

    Abstract translation: 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。

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