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公开(公告)号：US10453600B2
公开(公告)日：2019-10-22
申请号：US15483099
申请日：2017-04-10
申请人： TDK Corporation
发明人： Tsutomu Kobayashi , Toshio Tomonari , Emi Ito , Yuma Koyama
摘要： Disclosed herein is a differential mode filter including a core including a winding core part, a first wire wound around the winding core part in a first winding direction, and a second wire wound around the winding core part in a second winding direction opposite to the first winding direction. The winding core part includes first and second winding surfaces. A first crossing angle between the first and second wires that cross a plurality of times on the first winding surface is smaller than that a second crossing angle between the first and second wires that cross a plurality of times on the second winding surface.
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公开(公告)号：US12040116B2
公开(公告)日：2024-07-16
申请号：US17342051
申请日：2021-06-08
申请人： TDK Corporation
发明人： Kosuke Kunitsuka , Keigo Higashida , Emi Ito
CPC分类号： H01F17/045 , H01F27/2828 , H01F27/292 , H01F27/306 , H01F2017/0093
摘要： Disclosed herein is a common mode filter that includes a core having a winding core part and first and second wires wound in a same direction around the winding core part. The first and second wires have a first crossing portion at which first turns thereof counted from one ends thereof cross each other and a second crossing portion at which first turns thereof counted from the other ends thereof cross each other. The first and second wires are wound by layer winding in an aligned state with one of the first and second wires positioned in a lower layer and other one thereof positioned in an upper layer in at least parts of the first and second wires between second turns thereof counted from the one ends thereof and second turns thereof counted from the other ends thereof.
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公开(公告)号：US11605485B2
公开(公告)日：2023-03-14
申请号：US16236534
申请日：2018-12-30
申请人： TDK Corporation
发明人： Yugo Asai , Tsutomu Kobayashi , Daisuke Urabe , Hiroshi Suzuki , Emi Ito , Toshio Tomonari
摘要： Disclosed herein is a common mode filter that includes: a winding core part including first and second winding areas and a third winding area positioned between the first and second winding areas; and first and second wires wound in a same direction around the winding core part. The first and second wires constitute a first winding block wound in the first winding area and a second winding block wound in the second winding area. The first and second wires cross each other in the third winding area. Each of the first and second winding blocks has first and second winding layers. The difference in a number of turns between the first winding layer and the second winding layer is larger in the first winding block than in the second winding block.
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公开(公告)号：US20190228895A1
公开(公告)日：2019-07-25
申请号：US16236534
申请日：2018-12-30
申请人： TDK Corporation
发明人： Yugo Asai , Tsutomu Kobayashi , Daisuke Urabe , Hiroshi Suzuki , Emi Ito , Toshio Tomonari
摘要： Disclosed herein is a common mode filter that includes: a winding core part including first and second winding areas and a third winding area positioned between the first and second winding areas; and first and second wires wound in a same direction around the winding core part. The first and second wires constitute a first winding block wound in the first winding area and a second winding block wound in the second winding area. The first and second wires cross each other in the third winding area. Each of the first and second winding blocks has first and second winding layers. The difference in a number of turns between the first winding layer and the second winding layer is larger in the first winding block than in the second winding block.
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公开(公告)号：US10186365B2
公开(公告)日：2019-01-22
申请号：US15446321
申请日：2017-03-01
申请人： TDK CORPORATION
发明人： Syun Ashizawa , Toshio Tomonari , Hirohumi Asou , Emi Ito
摘要： A coil device includes a winding core with a coil portion wound by a wire and a pair of flanges respectively formed on both sides of the winding core in an axial direction. The coil portion includes a bank winding portion with double layer constituted by the wire wound around an outer circumference of the winding core and a layer winding portion with single layer constituted by the wire wound closely and adjacently to the bank winding portion along the axial direction of the winding core.
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公开(公告)号：US12073972B2
公开(公告)日：2024-08-27
申请号：US17342080
申请日：2021-06-08
申请人： TDK Corporation
发明人： Kosuke Kunitsuka , Keigo Higashida , Emi Ito , Daisuke Urabe , Yugo Asai
CPC分类号： H01F17/045 , H01F27/2828 , H01F27/292 , H01F27/306 , H01F2017/0093
摘要： Disclosed herein is a common mode filter that includes first and second wires wound in the same direction around the winding core part. The first and second wires have first to third layer winding portions, a first crossing portion positioned between the first and third layer winding portions, and a second crossing portion positioned between the second and third layer winding portions. The vertical positions of the first and second wires are reversed at least partially between the first and third layer winding portions, and the vertical positions of the first and second wires are reversed at least partially between the second and third layer winding portions.
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公开(公告)号：US10958233B2
公开(公告)日：2021-03-23
申请号：US16236563
申请日：2018-12-30
申请人： TDK Corporation
发明人： Yugo Asai , Tsutomu Kobayashi , Daisuke Urabe , Hiroshi Suzuki , Emi Ito , Toshio Tomonari
摘要： Disclosed herein is a common mode filter that includes a winding core part and first and second wires wound in a same direction around the winding core part. A predetermined one turn of the first wire crosses a predetermined one turn of the second wire a plurality of times.
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公开(公告)号：US10374568B2
公开(公告)日：2019-08-06
申请号：US16192047
申请日：2018-11-15
申请人： TDK Corporation
发明人： Tsutomu Kobayashi , Toshio Tomonari , Emi Ito , Yuma Koyama
摘要： Disclosed herein is a common mode filter that includes first and second terminal electrodes provided on the first flange part, third and fourth terminal electrodes provided on the second flange part, a first wire wound around the winding core part and having one end connected to the first terminal electrode and other end connected to the third terminal electrode, and a second wire wound around the winding core part and having one end connected to the second terminal electrode and other end connected to the fourth terminal electrode. The winding core part includes a first winding region, a second winding region, and a third winding region positioned between the first and second winding regions in the axial direction. The first and second wires are bifilar-wound in the first and second winding regions and layer-wound in the third winding region.
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公开(公告)号：US10193516B2
公开(公告)日：2019-01-29
申请号：US15461303
申请日：2017-03-16
申请人： TDK Corporation
发明人： Tsutomu Kobayashi , Toshio Tomonari , Emi Ito , Yuma Koyama
IPC分类号： H01F27/06 , H03H1/00 , H01F5/00 , H01F17/04 , H01F27/00 , H01F27/28 , H01F41/069 , H01F17/00
摘要： Disclosed herein is a common mode filter that includes first and second terminal electrodes provided on the first flange part, third and fourth terminal electrodes provided on the second flange part, a first wire wound around the winding core part and having one end connected to the first terminal electrode and other end connected to the third terminal electrode, and a second wire wound around the winding core part and having one end connected to the second terminal electrode and other end connected to the fourth terminal electrode. The winding core part includes a first winding region, a second winding region, and a third winding region positioned between the first and second winding regions in the axial direction. The first and second wires are bifilar-wound in the first and second winding regions and layer-wound in the third winding region.
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公开(公告)号：US12020839B2
公开(公告)日：2024-06-25
申请号：US17342119
申请日：2021-06-08
申请人： TDK Corporation
发明人： Kosuke Kunitsuka , Keigo Higashida , Emi Ito
CPC分类号： H01F17/045 , H01F27/2828 , H01F27/292 , H01F27/306 , H01F2017/0093
摘要： Disclosed herein is a common mode filter that includes first and second wires wound in the same direction around the winding core part. The first and second wires include first and second layer winding portions each including a plurality of blocks axially alternately arranged. A first block belonging to the first layer winding portion is disposed closest to the first flange part. A second block belonging to the second layer winding portion is disposed closest to the second flange part. The first and second wires cross each other in a region between axially adjacent blocks.
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