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1. 发明申请

US20170169924A1 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.

2. 发明申请

US20180233268A1 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).

3. 发明申请

US20180040405A1 COMPRESSION-BONDED MAGNET WITH CASE AND METHOD FOR PRODUCING THE SAME 审中-公开
公开(公告)号：US20180040405A1
公开(公告)日：2018-02-08
申请号：US15785400
申请日：2017-10-16
申请人： NTN CORPORATION
发明人： Shinji MIYAZAKI , Takuji HARANO , Tatsuo NAKAJIMA
IPC分类号： H01F7/02 , H01F41/02 , C22C38/00 , C22C33/02 , B22F3/02 , G01D5/14 , B23K35/36 , 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.

4. 发明申请

US20170110233A1 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.

5. 发明申请

US20160314887A1 COMPRESSION-BONDED MAGNET WITH CASE AND METHOD FOR PRODUCING THE SAME 有权
标题翻译：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。

6. 发明申请

US20160146630A1 MAGNETIC ENCODER DEVICE AND ROTATION DETECTION DEVICE 有权
标题翻译：磁性编码器装置和旋转检测装置
公开(公告)号：US20160146630A1
公开(公告)日：2016-05-26
申请号：US14904223
申请日：2014-07-02
申请人： Toru TAKAHASHI , Tatsuo NAKAJIMA , Hiroyuki HAKAMATA , Ikuo UEMOTO , Shinji MIYAZAKI , Takuji HARANO , Takayuki ODA , NTN CORPORATION
发明人： Toru TAKAHASHI , Tatsuo NAKAJIMA , Hiroyuki HAKAMATA , Ikuo UEMOTO , Shinji MIYAZAKI , Takuji HARANO , Takayuki ODA
IPC分类号： G01D5/14
CPC分类号： G01D5/14 , G01D5/24438 , G01D5/2452 , G01D5/246
摘要： A magnetic encoder device (3) of the present invention includes a base portion (33) having a mounting surface (33b) for mounting to a rotary shaft (2), a cored bar (35) fitted and fixed over the base portion (33), and a double-row magnetic encoder track (30) formed on the cored bar (35). Through movement of each of magnetic poles of the magnetic encoder track (30) over a region opposed to a magnetic sensor (4), an angle of the rotating rotary shaft is detected. The base portion (33) is formed of a sintered metal, and the mounting surface (33b) is subjected to sizing.
摘要翻译：本发明的磁性编码器装置（3）包括具有用于安装到旋转轴（2）的安装表面（33b）的基部（33），安装并固定在基部（33）上的芯棒）和形成在芯棒（35）上的双列磁性编码器轨道（30）。通过磁性编码器轨道（30）的每个磁极在与磁性传感器（4）相对的区域上移动，检测旋转的旋转轴的角度。基部（33）由烧结金属形成，安装面（33b）进行上胶。

7. 发明申请

US20170098499A1 MAGNETIC CORE PART, MAGNETIC ELEMENT, AND METHOD FOR PRODUCING MAGNETIC CORE PART 审中-公开
公开(公告)号：US20170098499A1
公开(公告)日：2017-04-06
申请号：US15129320
申请日：2015-03-25
申请人： NTN CORPORATION
发明人： Natsuhiko MORI , Hiroyuki NODA , Eiichirou SHIMAZU , Nobuyoshi YAMASHITA , Shougo KANBE , Takayuki ODA , Shinji MIYAZAKI
IPC分类号： H01F27/255 , H01F41/02 , H01F27/28
CPC分类号： H01F27/255 , B22F1/02 , B22F3/006 , B22F2998/10 , B22F2999/00 , C22C33/00 , C22C33/02 , C22C38/00 , C22C45/02 , C22C2202/02 , H01F1/15383 , H01F1/24 , H01F3/08 , H01F27/2823 , H01F41/0246 , C22C45/08 , B22F1/0011 , B22F1/0085 , B22F3/02 , B22F2001/0066 , B22F1/0014 , B22F2003/023 , B22F2001/0092 , B22F2207/13
摘要： The present invention provides a magnetic core part by which failures such as cracks do not occur even if the magnetic core part contains 90% by mass or more of an amorphous metal powder. The magnetic core part is formed by thermoset molding at least one magnetic powder selected from an amorphous metal powder alone and an amorphous metal powder coated with an insulating material, and a thermosetting binder resin. The magnetic core part contains the magnetic powder in an amount of 90% by mass or more and 99% by mass or less with respect to the total amount of the magnetic powder and the thermosetting binder resin.

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