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公开(公告)号：US20170288626A1
公开(公告)日：2017-10-05
申请号：US15461303
申请日：2017-03-16
Applicant: TDK Corporation
Inventor： Tsutomu KOBAYASHI , Toshio Tomonari , Emi Ito , Yuma Koyama
CPC classification number: H03H1/00 , H01F5/00 , H01F17/045 , H01F27/006 , H01F27/2823 , H01F41/069 , H01F2017/0093 , H03H7/427 , H03H2001/0021 , H03H2001/0035 , H03H2001/0092
Abstract: 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：US20230223180A1
公开(公告)日：2023-07-13
申请号：US18121819
申请日：2023-03-15
Applicant: TDK CORPORATION
Inventor： Toshio TOMONARI , Tsutomu KOBAYASHI , Kazunori ARIMITSU , Yuma KOMAYA
CPC classification number: H01F17/045 , H01F27/2823 , H01F2017/0093
Abstract: A device includes a core having a first end and a second end, and first and second wires wound around the core, where the core has first, second, and third sections, the second section being arranged between the first and third sections. Each of the first and second wires includes an ith turn located on the first section, a jth turn located on the second section, and a kth turn located on the third section. The ith turn of the first wire is closer to the first end than the ith turn of the second wire, the jth turn of the first wire is closer to the second end than the jth turn of the second wire, and the kth turn of the first wire is closer to the first end than the kth turn of the second wire.
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公开(公告)号：US20200090857A1
公开(公告)日：2020-03-19
申请号：US16690691
申请日：2019-11-21
Applicant: TDK Corporation
Inventor： Toshio TOMONARI , Tsutomu KOBAYASHI , Kazunori ARIMITSU
Abstract: Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.
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Patent Agency Ranking
公开(公告)号：US20190089320A1
公开(公告)日：2019-03-21
申请号：US16192047
申请日：2018-11-15
Applicant: TDK Corporation
Inventor： Tsutomu KOBAYASHI , Toshio TOMONARI , Emi ITO , Yuma KOYAMA
CPC classification number: H03H1/00 , H01F5/00 , H01F17/045 , H01F27/006 , H01F27/2823 , H01F41/069 , H01F2017/0093 , H03H7/427 , H03H2001/0021 , H03H2001/0035 , H03H2001/0092
Abstract: 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：US20230136361A1
公开(公告)日：2023-05-04
申请号：US18088674
申请日：2022-12-26
Applicant: TDK Corporation
Inventor： Yugo ASAI , Tsutomu KOBAYASHI , Daisuke URABE , Hiroshi SUZUKI , Emi ITO , Toshio TOMONARI
Abstract: 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. The first and second wires constitute a first winding block on one endmost side in an axial direction of the winding core part, a second winding block on other endmost side in the axial direction of the winding core part, and a third winding block positioned between the first and second winding blocks. The second winding block is a winding block at an odd-numbered position counted from the first winding block. The first and second wires cross each other in an area between the first and third winding blocks and in an area between the second and third winding blocks.
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公开(公告)号：US20180286553A1
公开(公告)日：2018-10-04
申请号：US15903696
申请日：2018-02-23
Applicant: TDK CORPORATION
Inventor： Tsutomu KOBAYASHI , Toshio TOMONARI , Kiyofumi FUJIWARA , Emi ITO
Abstract: A coil device includes a core, an inner coil portion, an outer coil portion, and an intermediate resin layer. The core includes a winding portion and a flange positioned at an end of the winding portion in an axial direction. The inner coil portion is constituted by winding a first wire around the winding portion. The outer coil portion is constituted by winding a second wire outside the inner coil portion. The intermediate resin layer exists between the inner coil portion and the outer coil portion.
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公开(公告)号：US20170221626A1
公开(公告)日：2017-08-03
申请号：US15487784
申请日：2017-04-14
Applicant: TDK CORPORATION
Inventor： Toshio TOMONARI , Tsutomu KOBAYASHI , Kazunori ARIMITSU , Yuma KOMAYA
CPC classification number: H01F27/2823 , H01F17/045 , H01F27/29 , H01F2017/0093
Abstract: A device is provided that includes a core having a first end and a second end, and first and second wires wound around the core so as to cross each other on the core to form a cross point. The a winding structure of an ith turn of the first and second wires counting from the cross point toward the first end, and a winding structure of an ith turn of the first and second wires counting from the cross point toward the second end, are substantially symmetrical about the cross point.
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公开(公告)号：US20140167903A1
公开(公告)日：2014-06-19
申请号：US14132550
申请日：2013-12-18
Applicant: TDK CORPORATION
Inventor： Toshio TOMONARI , Tsutomu KOBAYASHI , Kazunori ARIMITSU , Yuma KOMAYA
IPC: H01F27/28
CPC classification number: H01F27/2823 , H01F17/045 , H01F27/29 , H01F2017/0093
Abstract: A common mode filter includes first and second wires wound around a winding core portion by the same number of turns. Each of the first and second wires is wound by a number m1 of turns in a first winding area and wound by a number m2 of turns in a second winding area. A distance D1 between an n1th turn (1≦n1≦m1−1) of the second wire and an n1+1th turn of the first wire is shorter than a distance D2 between an n1th turn of the first wire and an n1+1th turn of the second wire in the winding area. A distance D3 between an n2th (m1+1≦n2≦m1+m2−1) turn of the first wire and an n2+1th turn of the second wire is shorter than a distance D4 between an n2th turn of the second wire and an n2+1th turn of the first wire in the winding area.
Abstract translation: 共模滤波器包括缠绕在绕组芯部分上相同匝数的第一和第二线。 第一线和第二线中的每一条在第一绕组区域中缠绕数m1匝，并在第二绕组区域中缠绕数m2匝。 第二线的第n1匝（1＆nlE; n1＆nlE; m1-1）与第一线的第n1 + 1匝之间的距离D1短于第一线的第n匝和第n1 + 1匝之间的距离D2 的绕组区域中的第二根线。 第一线的第n2（m1 + 1＆nlE; n2＆nlE; m1 + m2-1）之间的距离D3和第二线的n2 + 1圈的距离D3短于第二线的第n2圈与 n2 +第1圈绕线区域的第一根线。
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