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公开(公告)号：US20240105381A1
公开(公告)日：2024-03-28
申请号：US18464853
申请日：2023-09-11
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Motoki MATSUI , Tomoo KASHIWA
CPC classification number: H01F27/292 , H01F1/24 , H01F1/33 , H01F17/045 , H01F41/0246 , H01F2017/048
Abstract: At least one embodiment of the present invention provides a coil component including a base body; a coil conductor provided in the base body; a first external electrode electrically connected to the coil conductor; and a second external electrode electrically connected to the coil conductor. In at least one embodiment of the present invention, the base body includes a first group of metal magnetic particles and a resin binder, where the first group of metal magnetic particles has a plurality of first metal magnetic particles, the first group of metal magnetic particles has a first average circularity greater than 0.8, each of the first metal magnetic particles contains a main component and an additive, the main component includes at least one of Fe or Ni, and the additive accounts for less than 10 wt %.
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公开(公告)号：US20220351895A1
公开(公告)日：2022-11-03
申请号：US17864218
申请日：2022-07-13
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Makoto SHIMIZU , Tomoo KASHIWA
Abstract: A coil component includes: a core part including: a winding shaft; and a flange part provided on an axial-direction end of the winding shaft, which has an exterior face on the opposite side of the winding shaft, first and second side faces, and first and second groove parts provided on the exterior face and having a cut-out part on each the first and second side faces; a coil part including: a winding part of a conductor wound around the winding shaft; and two lead parts of the conductor led out from the winding part; and two terminal parts formed on the exterior face of the flange part; wherein the two lead parts are led in from the cut-out parts on the first and second side faces and fitted inside the groove parts, respectively, on the exterior face, and included in the pair of terminal parts, respectively.
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公开(公告)号：US20220285067A1
公开(公告)日：2022-09-08
申请号：US17751097
申请日：2022-05-23
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Hidenori AOKI , Tomoo KASHIWA
Abstract: A coil element according to one embodiment of the present invention has a rectangular parallelepiped shape and has a principal surface including long sides and short sides. The coil element includes a drum core, a winding wound around the drum core, a first external electrode, a second external, and a covering portion covering at least a part of the winding core. The drum core in the embodiment includes a first flange, a second flange, and a winding core connecting between the first flange and the second flange. The winding core extends along the short sides of the principal surface. In one embodiment, the coil element has a height less than 0.85 mm.
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公开(公告)号：US20200381166A1
公开(公告)日：2020-12-03
申请号：US16995215
申请日：2020-08-17
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Satoshi KOBAYASHI , Tomoo KASHIWA
Abstract: One object of the present invention is to provide a magnetic coupling coil component having a coupling coefficient that can be readily adjusted. A coil component according to one embodiment of the present invention includes: a drum core including a winding core, a first flange, and a second flange, the first flange being provided on one axial end of the winding core, the second flange being provided on another axial end of the winding core; a spacer provided on a surface of the winding core between the first flange and the second flange, the spacer being separate from the winding core; a first winding wire wound around the winding core between the first flange and the spacer; and a second winding wire wound around the winding core between the second flange and the spacer.
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公开(公告)号：US20240222007A1
公开(公告)日：2024-07-04
申请号：US18609705
申请日：2024-03-19
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Takayuki ARAI , Tomoo KASHIWA
CPC classification number: H01F41/04 , B22F1/16 , H01F1/26 , H01F17/04 , H01F27/2852 , H01F27/292 , H01F41/0246 , B22F2998/10 , B22F2999/00
Abstract: A method of manufacturing a coil component includes providing an intermediate body, heating the intermediate body at a first temperature ranging from 100 to 350° C., and after the heating at the first temperature, heating the intermediate body at a higher second temperature ranging from 600 to 900° C. The providing of the intermediate body including (i) preparing a base material having a flat plate shape or a wire shape, (ii) bending the base material to form a conductor portion, (iii) preparing a metal magnetic paste containing a resin and a plurality of metal magnetic particles mainly composed of iron, and (iv) applying a molding pressure to the metal magnetic paste covering the base material to form the intermediate body including a substrate body containing the plurality of metal magnetic particles and the conductor portion. The magnetic base body including an oxide coating film containing iron oxide on a surface of each of the metal magnetic particles.
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Patent Agency Ranking
公开(公告)号：US20240096544A1
公开(公告)日：2024-03-21
申请号：US18523405
申请日：2023-11-29
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Hidenori AOKI , Tomoo KASHIWA
CPC classification number: H01F27/2804 , H01F27/29 , H05K1/181 , H01F2027/2809 , H05K2201/1003
Abstract: A coil component includes a base body containing metal magnetic particles and a binder binding together the metal magnetic particles and having a first surface extending along a coil axis and a second surface opposing the first surface, a first external electrode, a second external electrode, and a coil conductor electrically connected to the first and second external electrodes. In one embodiment, the coil conductor has a winding portion, the winding portion has first conductor portions and one or more second conductor portions smaller in number than the first conductor portions. The first and second conductor portions alternate with and are connected to each other. A first dimension of the base body representing a dimension between the first surface and the second surface is greater than a second dimension of the base body representing a dimension of the base body between the third and fourth surface.
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公开(公告)号：US20230335331A1
公开(公告)日：2023-10-19
申请号：US18341348
申请日：2023-06-26
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Hidenori AOKI , Tomoo KASHIWA
CPC classification number: H01F27/292 , H05K3/301 , H01F27/306 , H01F27/2828 , H01F17/0013
Abstract: A method for manufacturing a coil component comprises: forming a coil conductor including a winding portion, the winding portion including a plurality of first conductor portions and one or more second conductor portions smaller in number than the first conductor portions, the first and second conductor portions alternate with and connected to each other; forming a molded body by molding composite magnetic material including metal magnetic particles and a binder with the coil conductor being disposed inside the composite magnetic material; and heating the molded body to produce a magnetic base body. The magnetic base body is formed such that a distance between the first conductor portions and a first surface of the magnetic body is greater than a distance between the second conductor portions and a second surface of the magnetic base body opposite to the first surface, by molding, cutting or polishing.
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8.发明申请公开(公告)号：US20220037067A1
公开(公告)日：2022-02-03
申请号：US17370800
申请日：2021-07-08
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Yoko ORIMO , Tomoo KASHIWA
Abstract: A metal magnetic powder is constituted by metal magnetic grains that each include: a metal phase where the mass percentage of Fe at its center part is lower than that at its contour part; and an oxide film covering the metal phase so as to allow the magnetic body resistant to magnetic saturation and low in iron loss.
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公开(公告)号：US20210272744A1
公开(公告)日：2021-09-02
申请号：US17186994
申请日：2021-02-26
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Satoshi TOKUNAGA , Tomoo KASHIWA
Abstract: A coil component according to one or more embodiments includes a base body having first to sixth surfaces, and a coil conductor including a winding portion that extends around a coil axis intersecting the first and second surfaces. The winding portion includes first, second, third, and fourth portions facing the third, fourth, fifth, and sixth surfaces, respectively when viewed from a direction of the coil axis. The radii of curvature of the first and second portions are both smaller than the radii of curvature of the third and fourth portions. When viewed from the direction of the coil axis, the distance between the first portion and the third surface and the distance between the second portion and the fourth surface are both larger than the distance between the third portion and the fifth surface and the distance between the fourth portion and the sixth surface.
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公开(公告)号：US20200312523A1
公开(公告)日：2020-10-01
申请号：US16828835
申请日：2020-03-24
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Makoto SHIMIZU , Tomoo KASHIWA
Abstract: A coil component includes: a magnetic body part having a first compact containing a first magnetic material and a first resin, and a second compact placed on the outside of the first compact and containing a second magnetic material and a second resin; a coil formed by a conductive wire which comprises a metal conductor covered with an insulating film, and embedded in the magnetic body part; and lead parts of the coil placed on the outside of the first compact; wherein the filling rate of the first magnetic material constituting the first compact is higher than the filling rate of the second magnetic material constituting the second compact. The filling rate of magnetic grains can be improved while also ensuring the insulating property of the coil, etc.
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