公开(公告)号：US20170011843A1

公开(公告)日：2017-01-12

申请号：US15200383

申请日：2016-07-01

Applicant: TDK Corporation

Inventor： Tasuku MIKOGAMI ,  Nobuo TAKAGI ,  Kouyu OHI ,  Syun ASHIZAWA ,  Setu TSUCHIDA

IPC: H01F27/29 ,  H01F41/069 ,  H01F27/28

CPC classification number: H01F41/069 ,  H01F17/045 ,  H01F27/263 ,  H01F27/2828 ,  H01F27/292

Abstract: Disclosed herein is a coil component that includes a drum core including a pair of flange portions and a winding core portion positioned between the flange portions, a plurality of terminal electrodes formed on the flange portions, and a plurality of wires wound around the winding core portion, each end of the wires being electrically connected to an associated one of the terminal electrodes. Each of the flange portions has an inner side surface connected to the winding core portion and an outer side surface opposite to the inner side surface, the outer side surface has a plurality of ridges and at least one groove, and the terminal electrodes are formed on at least the ridges of the outer side surfaces such that the terminal electrodes are isolated from each other by the groove.

Abstract translation: 本发明公开了一种线圈部件，其包括鼓芯，该鼓芯包括一对凸缘部分和位于凸缘部分之间的卷绕芯部分，形成在凸缘部分上的多个端子电极和缠绕在卷芯部分上的多根线 电线的每一端电连接到相关联的一个端子电极。 每个凸缘部分具有连接到卷绕芯部的内侧表面和与内侧表面相对的外侧表面，外侧表面具有多个脊和至少一个凹槽，并且端子电极形成在 至少外侧的脊部使得端子电极通过槽彼此隔离。

公开(公告)号：US20160379751A1

公开(公告)日：2016-12-29

申请号：US15192907

申请日：2016-06-24

Applicant: TDK Corporation

Inventor： Syun ASHIZAWA ,  Nobuo TAKAGI ,  Setu TSUCHIDA ,  Tasuku MIKOGAMI

IPC: H01F27/28 ,  H01F27/255

CPC classification number: H01F27/2823 ,  H01F27/255 ,  H01F27/30 ,  H01F27/325

Abstract: A pulse transformer has a winding core and a coil portion formed around an outer circumference of the winding core and composed of a primary coil and a secondary coil. The primary coil has a first wire and a second wire. The secondary coil has a third wire and a fourth wire. The coil portion includes a first layer formed by the first wire, a second layer positioned around an outer circumference of the first layer and formed by the third wire, a third layer positioned around an outer circumference of the second layer and firmed by the fourth wire, and a fourth layer positioned around an outer circumference of the third layer and formed by the second wire.

Abstract translation: 脉冲变压器具有卷绕芯和形成在绕组芯的外周周围并由初级线圈和次级线圈组成的线圈部分。 初级线圈具有第一线和第二线。 次级线圈具有第三线和第四线。 线圈部分包括由第一线形成的第一层，围绕第一层的外周定位并由第三线形成的第二层，第三层，围绕第二层的外圆周定位并由第四线确定 以及第四层，该第四层围绕第三层的外周设置并由第二导线形成。

公开(公告)号：US20160020012A1

公开(公告)日：2016-01-21

申请号：US14789540

申请日：2015-07-01

Applicant: TDK CORPORATION

Inventor： Nobuo TAKAGI ,  Tasuku MIKOGAMI ,  Setu TSUCHIDA ,  Hiroyuki ABE

IPC: H01F27/06

CPC classification number: H01F27/306 ,  H01F27/266 ,  H01F2019/085

Abstract: A coil component includes a first core, a second core, a lead wire, an outside mark, and an inside mark. The first core includes a winding portion and a pair of core ends. The second core connects a pair of the core ends and includes an inside surface and an outside surface. The lead wire is wound around the winding portion. The outside mark is formed on the outside surface of the second core and designed to change its arrangement at the time of rotating the second core by 90 degrees in a rotational direction whose central axis is along a normal direction of the outside surface. The inside mark with undulation is formed on the inside surface of the second core and designed to change its arrangement at the time of rotating the second core by 90 degrees in the rotational direction.

Abstract translation: 线圈部件包括第一芯，第二芯，引线，外部标记和内部标记。 第一芯包括绕组部分和一对芯部端部。 第二芯连接一对芯端，并包括内表面和外表面。 引线围绕绕组部分缠绕。 外部标记形成在第二芯的外表面上，并且被设计成在中心轴沿着外表面的​​法线方向的旋转方向使第二芯旋转90度时改变其布置。 具有起伏的内部标记形成在第二芯的内表面上，并被设计成在第二芯沿旋转方向旋转90度时改变其布置。

公开(公告)号：US20150084731A1

公开(公告)日：2015-03-26

申请号：US14492669

申请日：2014-09-22

Applicant: TDK Corporation

Inventor： Nobuo TAKAGI ,  Setu TSUCHIDA ,  Tasuku MIKOGAMI ,  Tomonao SUTO

IPC: H01F27/26 ,  H01F27/28

CPC classification number: H01F27/263 ,  H01F19/08 ,  H01F2019/085

Abstract: Disclosed herein is a pulse transformer that includes a drum core having a winding core portion and first and second flange portions, a plate core connected to the first and second flange portions, and a plurality of wires that are wound around the winding core portion. The first and second flange portions and the plate core are ground such that an inductance of the pulse transformer is 350 μH or more when a bias current of 8 mA is applied to the wires.

Abstract translation: 本文公开了一种脉冲变压器，其包括具有卷绕芯部分和第一和第二凸缘部分的鼓芯，连接到第一和第二凸缘部分的板芯和缠绕在卷芯部分上的多根线。 第一和第二凸缘部分和板芯被研磨，使得当对电线施加8mA的偏置电流时，脉冲变压器的电感为350μH或更大。

公开(公告)号：US20180261367A1

公开(公告)日：2018-09-13

申请号：US15912702

申请日：2018-03-06

Applicant: TDK Corporation

Inventor： Nobuo TAKAGI ,  Motohisa MURATA

IPC: H01F7/02 ,  H02K1/27 ,  H02K1/26

CPC classification number: H01F7/021 ,  H02K1/265 ,  H02K1/2766 ,  H02K21/16 ,  H02K2213/03

Abstract: In a magnet stack, an eddy current channel is cut off by an insulating layer in an insulating region of facing surface regions of the pair of magnets. Meanwhile, in a conducting region of the facing surface region of the pair of magnets, electrons can move between the pair of magnets via a conductor, and heat can be exchanged between the pair of magnets by the movement of electrons. Therefore, in the magnet stack, by cutting off the eddy current channel in the insulating region of the facing surface region of the pair of magnets, the degradation in magnet performance is suppressed and the cooling efficiency of the magnet is enhanced in the conducting region.

公开(公告)号：US20180090259A1

公开(公告)日：2018-03-29

申请号：US15717404

申请日：2017-09-27

Applicant: TDK CORPORATION

Inventor： Yuji SEZAI ,  Hironobu FURUKAWA ,  Nobuo TAKAGI

IPC: H01F27/255 ,  H01F27/28 ,  H01F27/29

CPC classification number: H01F27/255 ,  H01F17/04 ,  H01F27/28 ,  H01F27/29 ,  H01F2017/048

Abstract: A coil device including: a core, including a magnetic powder and a resin; an air-core coil; a lead, led from the air-core coil; and a terminal, in which at least the entire air-core coil is buried inside the core, an outer shape of the core is a shape where at least one corner part is removed from an approximate rectangular parallelepiped shape, the removed corner includes an entire side of the approximate rectangular parallelepiped shape in the removed corner, approximately parallel to a direction of a winding axis of the air-coil, and a volume of the removed part is 2% or more of a volume of the approximate rectangular parallelepiped shape, is provided. The coil device can reduce a used amount of the magnetic body while maintaining the magnetic characteristic.

公开(公告)号：US20170229233A1

公开(公告)日：2017-08-10

申请号：US15422156

申请日：2017-02-01

Applicant: TDK CORPORATION

Inventor： Nobuo TAKAGI ,  Kazuteru KAKIZAKI ,  Setu TSUCHIDA

IPC: H01F27/29 ,  H01F27/24 ,  H01F27/28

CPC classification number: H01F27/29 ,  H01F3/10 ,  H01F17/04 ,  H01F27/24 ,  H01F27/2828 ,  H01F27/292 ,  H01F2017/048

Abstract: A coil device comprising a winding coil including Cu and having a winding part and an extension line part which is pulled out from said winding part, a pair of electrodes made of a conductive material having a base part provided with a mounting base face at one of the face, and a connecting wire part having a connecting wire face connected with the extension line part and said connecting wire part projects out towards an opposite side of said mounting base face with respect to the base part, a magnetic part including a magnetic material and said magnetic part uncovering said mounting base and covering at least said winding part and said connecting wire face, wherein Sn amount per unit area of said connecting wire face is less than Sn amount per unit area of said mounting base.

公开(公告)号：US20170229229A1

公开(公告)日：2017-08-10

申请号：US15426390

申请日：2017-02-07

Applicant: TDK Corporation

Inventor： Yoshihiro KAWASAKI ,  Syun ASHIZAWA ,  Hirohumi ASOU ,  Nobuo TAKAGI

IPC: H01F27/255 ,  H01F27/29 ,  H01F27/28

CPC classification number: H01F27/255 ,  H01F3/10 ,  H01F27/2823 ,  H01F27/2828 ,  H01F27/292

Abstract: Disclosed herein is a coil component that includes a drum core having a winding core and first and second flange portions provided at opposite ends of the winding core; a wire wound around the winding core; terminal electrodes provided in the first and second flange portions, the terminal electrodes being connected to ends of the wire; and a magnetic top plate made of magnetic-powder containing resin in which magnetic powder is mixed in binder resin, the magnetic top plate being fixed to the first and second flange portions. The magnetic top plate has a lower surface facing the first and second flange portions and an upper surface located opposite to the lower surface. The density of the binder resin is higher in a surface layer part on a side of the lower surface than in a surface layer part on a side of the upper surface.

公开(公告)号：US20170200548A1

公开(公告)日：2017-07-13

申请号：US15401504

申请日：2017-01-09

Applicant: TDK Corporation

Inventor： Nobuo TAKAGI ,  Kouyu Ohi ,  Tasuku Mikogami ,  Setu Tsuchida

IPC: H01F27/24 ,  H01F27/29 ,  H01F27/28

CPC classification number: H01F27/2828 ,  H01F3/10 ,  H01F27/292 ,  H01F27/306

Abstract: Disclosed herein is a coil component that includes a drum-shaped core having a winding part, first and second terminal electrodes provided on the first flange part of the drum-shaped core, third and fourth terminal electrodes provided on the second flange part of the drum-shaped core, a first coil wound around the winding core part connected between the first and third terminal electrodes, and a second coil wound around the winding core part connected between the second and fourth terminal electrodes. The first and second coils cross each other at the first drawing part positioned between the winding part and the first flange part. The first coil is constituted by two or more wires.

公开(公告)号：US20150287520A1

公开(公告)日：2015-10-08

申请号：US14675914

申请日：2015-04-01

Applicant: TDK Corporation

Inventor： Nobuo TAKAGI ,  Setu Tsuchida ,  Tasuku Mikogami

IPC: H01F27/29 ,  H01F27/28

CPC classification number: H01F27/29 ,  H01F5/00 ,  H01F27/00 ,  H01F27/02 ,  H01F27/2823 ,  H01F27/292

Abstract: Disclosed herein is a coil component that includes first and second terminal electrodes provided on the core. The first wire includes a first lead, section extending from a winding core portion toward the first terminal electrode so as to cross the winding core portion, and a first connecting section connected to the first terminal electrode. The second wire includes a second lead section extending from the winding core portion toward the second terminal electrode so as to cross the winding core portion, and a second connecting section connected to the second terminal electrode. The first lead section crosses the second lead section so as to pass under the second lead section. The second connecting section is located closer to a far side in an extending direction of the winding core portion than the first connecting section.

Abstract translation: 这里公开了包括设置在芯上的第一和第二端子电极的线圈部件。 第一线包括从绕组芯部朝向第一端子电极延伸以跨过绕组芯部的第一引线部分和与第一端子电极连接的第一连接部分。 第二线包括从绕组芯部分朝向第二端子电极延伸以跨过绕组芯部分的第二引线部分，以及连接到第二端子电极的第二连接部分。 第一引线部分穿过第二引线部分以通过第二引线部分。 第二连接部位于比第一连接部更靠近卷绕芯部的延伸方向的远侧。