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公开(公告)号：US10260132B2
公开(公告)日：2019-04-16
申请号：US15087651
申请日：2016-03-31
发明人： Minoru Ryu , Shinsuke Takeoka , Yoko Orimo , Yoshiki Iwazaki , Kenji Otake
IPC分类号： H01F1/33 , H01F1/24 , H01F1/147 , C22C38/34 , C22C38/28 , C22C38/02 , C22C38/14 , C22C38/06 , B22F1/02
摘要： In an embodiment, a magnetic body includes soft magnetic alloy grains 11 containing Fe, element L, and element M (where element L is Si or Zr and element M is a metal element other than Si or Zr that oxidizes more easily than Fe), as well as oxide film produced from oxidization of part of these grains 11; wherein at least some of the bonds between adjacent soft magnetic alloy grains 11 are by way of the oxide film; the oxide film has an inner film 12a, and an outer film 12b positioned on the outer side of the inner film 12a; and the inner film 12a contains more of element L than element M, while the outer film 12b contains more of element M than element L.
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公开(公告)号：US09007159B2
公开(公告)日：2015-04-14
申请号：US13708614
申请日：2012-12-07
CPC分类号： H01F5/003 , H01F1/33 , H01F17/045
摘要： A coil-type electronic component having a coil inside or on the surface of a base material is characterized in that the base material of the coil-type electronic component is constituted by a group of soft magnetic alloy grains inter-bonded via oxide layers, multiple crystal grains are present in each soft magnetic alloy grain, and the oxide layers preferably have a two-layer structure whose outer layer is thicker than the inner layer.
摘要翻译： 线圈型电子部件在基材的内侧或表面上具有线圈，其特征在于，所述线圈型电子部件的基材由一组通过氧化物层互连的软磁性合金晶粒构成，多个 每个软磁合金晶粒中都存在晶粒，氧化物层优选具有外层比内层厚的两层结构。
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公开(公告)号：US08866579B2
公开(公告)日：2014-10-21
申请号：US13679291
申请日：2012-11-16
发明人： Masahiro Hachiya , Takayuki Arai , Kenji Otake
IPC分类号： H01F5/00 , H01F27/28 , H01F17/00 , H01F27/255
CPC分类号： H01F27/255 , H01F17/0033 , H01F27/2804
摘要： A laminated inductor offers higher magnetic permeability, high inductance, low resistance and high rated current, while also supporting downsizing of device, by using a soft magnetic alloy as the magnetic material. Provided is a laminated inductor, comprising: an internal conductor forming area and a top cover area and a bottom cover area formed in a manner sandwiching the internal conductor forming area from above and below, wherein the internal conductor forming area has a magnetic material part formed by soft magnetic alloy particles, and internal conductors buried in the magnetic material part, and at least one of the top cover area and bottom cover area is formed by soft magnetic alloy particles exhibiting a two-peak particle size distribution curve (based on count).
摘要翻译： 层叠电感器通过使用软磁性合金作为磁性材料，提供更高的磁导率，高电感，低电阻和高额定电流，同时还支持器件的小型化。 本发明提供一种层叠电感器，其特征在于，包括：内部导体形成区域和顶盖区域和底盖区域，其以从上下夹着内部导体形成区域的方式形成，其中，所述内部导体形成区域形成有磁性材料部分 通过软磁性合金颗粒和埋在磁性材料部分中的内部导体，并且顶盖区域和底部覆盖区域中的至少一个由表示双峰分布曲线（基于计数）的软磁性合金颗粒形成， 。
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公开(公告)号：US10096418B2
公开(公告)日：2018-10-09
申请号：US15849966
申请日：2017-12-21
发明人： Takayuki Arai , Ryuichi Kondou , Akiko Yamaguchi , Shinsuke Takeoka , Kazuhiko Oyama , Kenji Otake
IPC分类号： H01F5/00 , H01F27/245 , H01F27/29 , H01F17/04 , H01F1/03 , H01F27/28 , H01F17/00 , H01F27/255 , H01F1/28
摘要： One object is to provide a laminated inductor having a reduced thickness without reduction in the magnetic characteristic and the insulation quality. The laminated inductor includes a first magnetic layer, an internal conductor, second magnetic layers, third magnetic layers, and a pair of external electrodes. The first magnetic layer includes three or more magnetic alloy particles arranged in the thickness direction and an oxide film binding the magnetic alloy particles together and containing Cr. The three or more magnetic alloy particles have an average particle diameter of 4 μm or smaller. The internal conductor includes a plurality of conductive patterned portions electrically connected to each other via the first magnetic layer. The second magnetic layers are composed of magnetic alloy particles and disposed around the conductive patterned portions. The third magnetic layers are composed of magnetic alloy particles and disposed so as to be opposed to each other in thickness direction.
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公开(公告)号：US09685267B2
公开(公告)日：2017-06-20
申请号：US15132102
申请日：2016-04-18
发明人： Hitoshi Matsuura , Tomomi Kobayashi , Yoshikazu Okino , Hidemi Iwao , Kenichiro Nogi , Kenji Otake
CPC分类号： H01F27/2823 , H01F1/047 , H01F1/08 , H01F17/0033 , H01F27/255 , H01F27/2804 , H01F27/29 , H01F2027/2809
摘要： A coil component is of the type where a helical coil is directly contacting a magnetic body where such coil component still meets the demand for electrical current amplification. The coil component is structured in such a way that a helical coil is covered with a magnetic body. The magnetic body is mainly constituted by magnetic alloy grains and contains substantially no glass component, and each of the magnetic alloy grains has an oxide film of the grain on its surface.
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公开(公告)号：US09287033B2
公开(公告)日：2016-03-15
申请号：US14162427
申请日：2014-01-23
发明人： Hitoshi Matsuura , Kenji Otake
CPC分类号： H01F41/0246 , B22F2998/00 , B22F2998/10 , C22C38/34 , C22C2202/02 , H01F1/14783 , H01F1/14791 , H01F1/24 , H01F1/33 , H01F5/00 , H01F27/24 , H01F27/255 , Y10T428/249956 , B22F9/082 , B22F3/02 , B22F3/10 , B22F1/02 , C22C33/0278
摘要： A magnetic material contains multiple metal grains constituted by soft magnetic alloy and oxide film formed on a surface of the metal grains, which soft magnetic alloy includes Fe and a metal element that oxidizes more easily than Fe, wherein the magnetic material forms a grain compact having first bonding parts where adjacent metal grains are contacted and directly bonded together, second bonding parts where adjacent metal grains are bonded together via the oxide film formed around the entire surface of said adjacent metal grains other than the first bonding parts, and voids formed in an area other than the first and second bonding parts and surrounded by the oxide film.
摘要翻译： 磁性材料包含由软磁性合金构成的多个金属颗粒和形成在金属颗粒的表面上的氧化膜，该软磁性合金包含Fe和比Fe更容易氧化的金属元素，其中磁性材料形成具有 相邻的金属颗粒接触并直接接合在一起的第一接合部分，通过形成在除了第一接合部分之外的所述相邻金属颗粒的整个表面上形成的氧化膜将相邻的金属颗粒结合在一起的第二接合部分， 除了第一和第二接合部分之外并被氧化物膜包围。
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公开(公告)号：US09165705B2
公开(公告)日：2015-10-20
申请号：US14070386
申请日：2013-11-01
发明人： Hitoshi Matsuura , Takayuki Arai , Kenji Otake
CPC分类号： H01F17/0013 , H01F17/0033
摘要： A laminated inductor having an internal conductor forming region, as well as a top cover region and bottom cover region formed in a manner sandwiching the internal conductor forming region between top and bottom; wherein the internal conductor forming region has a magnetic part formed with soft magnetic alloy grains, as well as helical internal conductor embedded in the magnetic part; and at least one of the top cover region and bottom cover region (or preferably both) is/are formed with soft magnetic alloy grains whose average grain size is greater than that of grains in the internal conductor forming region including the soft magnetic alloy grains constituting the magnetic part.
摘要翻译： 具有内部导体形成区域的层叠电感器，以及以在顶部和底部之间夹持内部导体形成区域的方式形成的顶部覆盖区域和底部覆盖区域; 其特征在于，所述内部导体形成区域具有形成有软磁性合金晶粒的磁性部分，以及埋设在所述磁性部分中的螺旋状内部导体。 并且顶盖区域和底盖区域（或优选两者）中的至少一个由平均粒径大于包括构成的软磁性合金颗粒的内部导体形成区域的晶粒的平均粒径的软磁性合金晶粒形成 磁性部分。
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公开(公告)号：US08797136B2
公开(公告)日：2014-08-05
申请号：US13717117
申请日：2012-12-17
发明人： Takashi Nakajima , Mika Tamanoi , Kenji Otake
CPC分类号： H01F5/003 , H01F17/0013 , H01F2017/0073 , H01F2017/0093
摘要： A laminated common-mode choke coil offering higher insulation reliability has a glass ceramic layer, two spiral internal conductors facing each other and sandwiching the glass ceramic layer in between, and insulation layers sandwiching the two internal conductors, wherein the glass ceramic layer contains segregated Al regions and the maximum dimension t1 of each segregated Al region in the glass ceramic layer, in the layer-thickness direction, is no more than 80% of the distance t0 between the two internal conductors.
摘要翻译： 提供更高的绝缘可靠性的叠层共模扼流线圈具有玻璃陶瓷层，两个彼此面对的螺旋内部导体和夹在其间的玻璃陶瓷层以及夹住两个内部导体的绝缘层，其中玻璃陶瓷层包含分离的Al 区域和玻璃陶瓷层中的每个分离的Al区域在层厚度方向上的最大尺寸t1不大于两个内部导体之间的距离t0的80％。
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公开(公告)号：US10658103B2
公开(公告)日：2020-05-19
申请号：US15465489
申请日：2017-03-21
摘要： A coil component has a magnetic body of rectangular solid shape, a coil with N turns (N is a positive number of 2 or greater) provided inside the magnetic body, an insulating intermediate part, and external electrodes. The coil has a first conductor layer, a second conductor layer, and an inter-layer connection part. The first conductor layer has a first multiple winding part which is wound around one axis with a first spacing. The second conductor layer has a second multiple winding part which is wound around the one axis with the first spacing and faces the first conductor layer. The insulating intermediate part is provided inside the magnetic body and forms, between the first conductor layer and second conductor layer, a second spacing corresponding to a thickness equal to or less than the product of the first spacing and (N−1).
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公开(公告)号：US10566118B2
公开(公告)日：2020-02-18
申请号：US15087612
申请日：2016-03-31
发明人： Shinsuke Takeoka , Akiko Yamaguchi , Kenji Otake
IPC分类号： H01F1/14 , H01F17/04 , H01F27/255
摘要： In an embodiment, a coil component includes a magnetic body, and an internal conductor 21 having a center axis and formed in a spiral shape; wherein the internal conductor 21 is embedded in the magnetic body; in a cross sectional view of a plane that includes the center axis extending in the vertical direction, wherein a conductor region part 11 positioned between the adjacent windings of the spiral shape has a higher oxygen content than that of a core part 12 including the center axis and positioned on the inner side of the windings of the spiral shape. the magnetic body is constituted by iron-based soft magnetic grains and oxide film of at least one type of element that oxidizes more easily than iron, which oxide film bonds at least partly the iron-based soft magnetic grains.
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