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1. 发明公开

EP2905791A1 MAGNETIC CORE AND PROCESS FOR PRODUCING SAME 无效
标题翻译： MAGNETKERN UND VERFAHREN ZUR HERSTELLUNG DAVON
公开(公告)号：EP2905791A1
公开(公告)日：2015-08-12
申请号：EP13843337.0
申请日：2013-09-27
申请人： NTN Corporation
发明人： UEMOTO, Ikuo , MIYAZAKI, Shinji , HARANO, Takuji , MORI, Natsuhiko , NODA, Hiroyuki
IPC分类号： H01F1/26 , H01F27/255 , H01F41/02
CPC分类号： H01F27/255 , B22F1/0062 , B22F2998/10 , C22C2202/02 , H01F1/22 , H01F1/26 , H01F3/08 , H01F41/0246 , B22F3/02 , B22F9/04 , B22F2003/248
摘要： The present invention provides a magnetic core which can be produced with improved productivity without increasing a material cost and has required magnetic and mechanical properties and a process for producing the same. The magnetic core is produced by compression molding and thereafter thermally hardening iron-based soft magnetic powder having resin films formed on surfaces of particles thereof. The resin film is an uncured resin film formed by dry mixing the iron-based soft magnetic powder and epoxy resin containing a latent curing agent with each other at a temperature not less than a softening temperature of the epoxy resin and less than a thermal curing starting temperature thereof. The iron-based soft magnetic powder having the resin films formed on the surfaces of the particles thereof is compression molded by using a die to produce a compression molded body. The compression molded body having the resin films formed on the surfaces of the particles thereof is thermally hardened at a temperature not less than the thermal curing starting temperature of the epoxy resi
摘要翻译：本发明提供一种磁芯，其可以在不增加材料成本的情况下以提高的生产率生产并且需要磁性和机械性能及其制造方法。磁芯通过压缩成型制造，然后热硬化铁基软磁性粉末，其具有在其颗粒表面上形成的树脂膜。树脂膜是通过在不低于环氧树脂的软化温度的温度下将包含潜固化剂的铁基软磁性粉末和环氧树脂彼此干燥混合而形成的未固化树脂膜，并且小于热固化起始温度。在其颗粒表面上形成有树脂膜的铁基软磁性粉末通过使用模具进行压缩成型以制造压缩成型体。将具有形成在其颗粒表面上的树脂膜的压模体在不低于环氧树脂的热固化起始温度的温度下热固化

2. 发明公开

EP2983179A1 ELECTRIC CIRCUIT-USE CORE AND DEVICE USING SAME 审中-公开
标题翻译： KERNFÜRELEKTRISCHE SCHALTUNG UND VORRICHTUNG DAMIT
公开(公告)号：EP2983179A1
公开(公告)日：2016-02-10
申请号：EP14772880.2
申请日：2014-03-17
申请人： NTN Corporation
发明人： NODA, Hiroyuki , MORI, Natsuhiko , UEMOTO, Ikuo
IPC分类号： H01F27/24 , H01F27/255 , H01F41/02 , H02M3/155 , H02M3/28
CPC分类号： H01F27/255 , B22F3/02 , B60L11/1803 , C22C1/002 , C22C1/0433 , C22C33/02 , C22C45/02 , C22C45/04 , H01F1/153 , H01F1/15308 , H01F1/15316 , H01F1/1535 , H01F1/22 , H01F27/263 , H01F41/0246 , H02J7/007 , H02J9/06 , H02M3/155 , H02M3/335 , H02M7/537
摘要： An electric circuit-use core which has low loss, is less susceptible to magnetic saturation, thus allows for size reduction and current increase, and has a wide operation range in high-frequency region, and a manufacturing method for the core are provided. The electric circuit-use core (1) is a dust core formed by compression molding or injection molding with an iron-based amorphous material, a cobalt-based amorphous material, or a sendust material as a magnetic material, and is used as a transformer core, a choke core, or a core of a reactor. The electric circuit-use core (1) includes cylindrical pillar portions (2) and connection portions (3).
摘要翻译：具有低损耗的电路用磁芯不易受到磁饱和的影响，因此可以实现尺寸减小和电流增加，并且在高频区域具有宽的工作范围，并且提供了用于芯的制造方法。电路用铁心（1）是通过使用铁基非晶材料，钴基非晶材料或铁硅铝铁氧体材料作为磁性材料进行压缩成形或注射成型形成的压粉芯，并且用作变压器核心，扼流圈或反应堆的核心。电路用铁芯（1）包括圆柱形支柱（2）和连接部分（3）。

3. 发明公开

EP2988102A1 MAGNETIC ENCODER AND PRODUCTION METHOD THEREFOR 审中-公开
标题翻译：磁编码器及其制造方法
公开(公告)号：EP2988102A1
公开(公告)日：2016-02-24
申请号：EP14783372.7
申请日：2014-04-04
申请人： NTN Corporation
发明人： HARANO, Takuji , UEMOTO, Ikuo , MIYAZAKI, Shinji , ODA, Takayuki , NODA, Hiroyuki
IPC分类号： G01D5/245
CPC分类号： G01D5/12 , F16C19/184 , F16C33/723 , F16C41/007 , F16C2326/02 , G01D5/2451 , G01P3/443
摘要： A magnetic encoder is a magnetic encoder including a core metal and a multipolar magnet provided on the core metal and having magnetic poles formed alternately in a circumferential direction. The core metal includes an inner diameter cylindrical portion, an upright plate portion extending from one end of the inner diameter cylindrical portion toward an outer diameter side, and an outer diameter cylindrical portion extending axially from an outer diameter side end of the upright plate portion; the multipolar magnet is integrally molded on an annular portion, of the core metal, extending over the upright plate portion and the outer diameter cylindrical portion, by insert-molding such that an end surface of the outer diameter cylindrical portion is embedded; and a gap between the core metal and the multipolar magnet is filled with a sealing agent.
摘要翻译：磁性编码器是一种磁性编码器，其包括芯金属和设置在芯金属上并且具有在圆周方向上交替形成的磁极的多极磁体。核心金属包括内径圆筒部分，从内径圆筒部分的一端向外径侧延伸的立板部分和从立板部分的外径侧端部沿轴向延伸的外径圆筒部分; 所述多极磁铁通过嵌入成型使所述外径圆筒部的端面埋入而在所述立板部和所述外径圆筒部的整个面上一体成型在所述芯骨的环状部上，芯金属和多极磁体之间的间隙填充有密封剂。

4. 发明公开

EP2879139A1 COMPOSITE MAGNETIC CORE AND MAGNETIC ELEMENT 审中-公开
标题翻译：复合材料磁芯与磁性体
公开(公告)号：EP2879139A1
公开(公告)日：2015-06-03
申请号：EP13823707.8
申请日：2013-07-24
申请人： NTN Corporation
发明人： UEMOTO, Ikuo , MIYAZAKI, Shinji , HARANO, Takuji
IPC分类号： H01F27/24 , H01F27/255 , H01F41/02
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.

5. 发明授权

EP3023746B1 MAGNETIC ENCODER DEVICE AND ROTATION DETECTION DEVICE 有权
公开(公告)号：EP3023746B1
公开(公告)日：2018-11-21
申请号：EP14825711.6
申请日：2014-07-02
申请人： NTN Corporation
发明人： TAKAHASHI, Toru , NAKAJIMA, Tatsuo , HAKAMATA, Hiroyuki , UEMOTO, Ikuo , MIYAZAKI, Shinji , HARANO, Takuji , ODA, Takayuki
IPC分类号： G01D5/245 , G01D5/14 , G01D5/246 , G01D5/244
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.

6. 发明公开

EP3023746A1 MAGNETIC ENCODER DEVICE AND ROTATION DETECTION DEVICE 审中-公开
标题翻译： MAGNETISCHE CODIERUNGSVORRICHTUNG UND ROTATIONSERKENNUNGSVORRICHTUNG
公开(公告)号：EP3023746A1
公开(公告)日：2016-05-25
申请号：EP14825711.6
申请日：2014-07-02
申请人： NTN Corporation
发明人： TAKAHASHI, Toru , NAKAJIMA, Tatsuo , HAKAMATA, Hiroyuki , UEMOTO, Ikuo , MIYAZAKI, Shinji , HARANO, Takuji , ODA, Takayuki
IPC分类号： G01D5/245
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）的磁极的每个磁体在与磁性传感器（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。

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