公开(公告)号：US10998130B2

公开(公告)日：2021-05-04

申请号：US16555169

申请日：2019-08-29

申请人： TDK CORPORATION

发明人： Hitoshi Ohkubo ,  Masazumi Arata ,  Manabu Ohta ,  Shou Kawadahara ,  Yoshihiro Maeda ,  Takahiro Kawahara ,  Hokuto Eda ,  Shigeki Sato

IPC分类号： H01F41/04 ,  H01F17/00 ,  H01F27/29

摘要： In a coil component and a method for manufacturing the same, a winding part of a coil is grown by plating so as to extend between resin walls of a resin body provided before the coil is grown by plating. The resin wall is interposed between adjacent turns of the winding part of the coil during the plating growth, and therefore contact between adjacent turns of the winding part of the coil cannot occur.

公开(公告)号：US10468184B2

公开(公告)日：2019-11-05

申请号：US14951004

申请日：2015-11-24

申请人： TDK CORPORATION

发明人： Hitoshi Ohkubo ,  Masazumi Arata ,  Manabu Ohta ,  Shou Kawadahara ,  Yoshihiro Maeda ,  Takahiro Kawahara ,  Hokuto Eda ,  Shigeki Sato

IPC分类号： H01F41/04 ,  H01F17/00 ,  H01F27/29

摘要： In a coil component 1 and a method for manufacturing the same, a winding part of a coil is grown by plating so as to extend between resin walls of a resin body provided before the coil is grown by plating. The resin wall is interposed between adjacent turns of the winding part of the coil during the plating growth, and therefore contact between adjacent turns of the winding part of the coil cannot occur.

公开(公告)号：US20190006088A1

公开(公告)日：2019-01-03

申请号：US15852662

申请日：2017-12-22

申请人： TDK Corporation

发明人： Toshio Tomonari ,  Sachiko Takano ,  Shigeki Sato

IPC分类号： H01F27/28 ,  H01F27/24 ,  H05K1/18 ,  H01F27/29 ,  H05K1/02 ,  H01F27/32 ,  H01F41/12

CPC分类号： H01F27/2885 ,  H01F17/0013 ,  H01F27/24 ,  H01F27/2847 ,  H01F27/292 ,  H01F27/323 ,  H01F41/122 ,  H01F2027/2857 ,  H05K1/0218 ,  H05K1/111 ,  H05K1/181 ,  H05K3/3442 ,  H05K2201/1003

摘要： Disclosed herein is a coil component that includes a coil conductor part, and first and second high permeability parts provided respectively on both sides of the coil conductor part in a coil axis direction. The second high permeability part has a larger thickness in the coil axis direction than the first high permeability part. A low permeability part that segments at least a part of a magnetic path exists between the first and second high permeability parts in an outer diameter area of the coil conductor part when viewed in the coil axis direction.

公开(公告)号：US11049641B2

公开(公告)日：2021-06-29

申请号：US15363938

申请日：2016-11-29

申请人： TDK Corporation

发明人： Hitoshi Ohkubo ,  Kyohei Tonoyama ,  Shigeki Sato

IPC分类号： H01F5/00 ,  H01F27/255 ,  H01F17/00 ,  H01F17/04 ,  H01F27/02 ,  H01F27/28 ,  H01F27/29 ,  H01F27/32 ,  H01F27/42

摘要： A coil device comprising a coil, and a magnetic metal powder containing resin covering said coil. Said magnetic metal powder comprises at least two types of magnetic metal powders with different D50. The magnetic metal powder having larger D50 is defined as a large diameter powder, and the magnetic metal powder having smaller D50 is defined as a small diameter powder among the two types of said magnetic metal powder. Said large diameter powder is made of iron or iron based alloy. Said small diameter powder is made of Ni—Fe alloy. Said small diameter powder has D50 of 0.5 to 1.5 μm. Said large diameter powder and said small diameter powder respectively comprises an insulation coating layer.

公开(公告)号：US10319506B2

公开(公告)日：2019-06-11

申请号：US15590341

申请日：2017-05-09

申请人： TDK Corporation

发明人： Toshio Tomonari ,  Sachiko Takano ,  Shigeki Sato

IPC分类号： H01F27/36 ,  H01F5/00 ,  H01F17/00 ,  H01F10/26 ,  H01F27/29 ,  H01F17/04 ,  H01F27/28 ,  H01F3/10

摘要： Disclosed herein is a coil component that includes an element body made of a first magnetic material, a coil conductor embedded in the element body, and first and second magnetic films made of a second magnetic material having higher permeability than that of the first magnetic material. The element body has an upper surface crossing a coil axis of the coil conductor and first and second side surfaces extending substantially parallel to the coil axis. The first magnetic film is formed on the upper surface and first side surface of the element body, and the second magnetic film is formed on the upper surface and second side surface of the element body.

公开(公告)号：US11557427B2

公开(公告)日：2023-01-17

申请号：US16733293

申请日：2020-01-03

申请人： TDK CORPORATION

发明人： Hitoshi Ohkubo ,  Masazumi Arata ,  Manabu Ohta ,  Yuuya Kaname ,  Yoshihiro Maeda ,  Takahiro Kawahara ,  Hokuto Eda ,  Shigeki Sato

IPC分类号： H01F27/32 ,  H01F17/00 ,  H01F17/04

摘要： A coil component in which a change in thicknesses of the winding part is prevented is provided. According to the coil component, since each of a pair of neighboring resin walls and a seed part between the pair of resin walls are separated by a predetermined distance, a plating part grown on the seed part is easy to grow uniformly between the pair of neighboring resin walls. For this reason, the winding part whose surface is gentle and in which a change in thickness is prevented is obtained by plating growth.

公开(公告)号：US10559417B2

公开(公告)日：2020-02-11

申请号：US15166519

申请日：2016-05-27

申请人： TDK CORPORATION

发明人： Hitoshi Ohkubo ,  Masazumi Arata ,  Manabu Ohta ,  Yuuya Kaname ,  Yoshihiro Maeda ,  Takahiro Kawahara ,  Hokuto Eda ,  Shigeki Sato

IPC分类号： H01F5/00 ,  H01F27/32

摘要： A coil component in which a change in thicknesses of the winding part is prevented is provided. According to the coil component, since each of a pair of neighboring resin walls and a seed part between the pair of resin walls are separated by a predetermined distance, a plating part grown on the seed part is easy to grow uniformly between the pair of neighboring resin walls. For this reason, the winding part whose surface is gentle and in which a change in thickness is prevented is obtained by plating growth.

公开(公告)号：US10388452B2

公开(公告)日：2019-08-20

申请号：US15852662

申请日：2017-12-22

申请人： TDK Corporation

发明人： Toshio Tomonari ,  Sachiko Takano ,  Shigeki Sato

IPC分类号： H01F27/28 ,  H01F27/24 ,  H05K1/18 ,  H01F27/29 ,  H01F27/32 ,  H01F41/12 ,  H05K1/02 ,  H01F17/00 ,  H05K1/11

摘要： Disclosed herein is a coil component that includes a coil conductor part, and first and second high permeability parts provided respectively on both sides of the coil conductor part in a coil axis direction. The second high permeability part has a larger thickness in the coil axis direction than the first high permeability part. A low permeability part that segments at least a part of a magnetic path exists between the first and second high permeability parts in an outer diameter area of the coil conductor part when viewed in the coil axis direction.

公开(公告)号：US10210974B2

公开(公告)日：2019-02-19

申请号：US14952028

申请日：2015-11-25

申请人： TDK CORPORATION

发明人： Hitoshi Ohkubo ,  Masazumi Arata ,  Manabu Ohta ,  Shou Kawadahara ,  Yoshihiro Maeda ,  Takahiro Kawahara ,  Hokuto Eda ,  Shigeki Sato

IPC分类号： H01F1/24 ,  H01F17/00 ,  H01F17/04 ,  H01F27/29

摘要： In a coil component (planar coil element), at least part of a third metal magnetic powder constituting a metal magnetic powder and having a minimum average grain diameter is uncoated, which suppresses a reduction in magnetic permeability. On the other hand, the remaining metal powders are coated with glass, which improves the insulating properties of a metal magnetic powder-containing resin and reduces core loss.