公开(公告)号：US10210988B2

公开(公告)日：2019-02-19

申请号：US15426390

申请日：2017-02-07

Applicant: TDK Corporation

Inventor： Yoshihiro Kawasaki ,  Syun Ashizawa ,  Hirohumi Asou ,  Nobuo Takagi

IPC: H01F27/29 ,  H01F27/255 ,  H01F27/28 ,  H01F3/10

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：US09905355B2

公开(公告)日：2018-02-27

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 ,  H01F27/30 ,  H01F27/02 ,  H01F27/26 ,  H01F19/08

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.

公开(公告)号：US09865386B2

公开(公告)日：2018-01-09

申请号：US15395099

申请日：2016-12-30

Applicant: TDK Corporation

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

IPC: H01F27/29 ,  H01F27/06 ,  H01F3/10

CPC classification number: H01F27/06 ,  H01F3/10 ,  H01F27/29 ,  H01F27/292 ,  H01F2027/065

Abstract: Disclosed herein is a coil component that includes a drum-shaped core having a first flange part provided at one end of a winding core part, first to fourth terminal metal fittings formed on the first flange part so as to be arranged in this order in a second direction, and first to fourth wires wound around the winding core part. One ends of the first to fourth wires are connected to different ones of the first to fourth terminal metal fittings. A distance between the first and second terminal metal fittings is larger than the distance between the third and fourth terminal metal fittings. An amount of an adhesive used to bond each of the third and fourth terminal metal fittings is greater than an amount of an adhesive used to bond each of the first and second metal fittings.

公开(公告)号：USD798814S1

公开(公告)日：2017-10-03

申请号：US29528830

申请日：2015-06-01

Applicant: TDK CORPORATION

Designer： Nobuo Takagi ,  Toshio Tomonari ,  Setu Tsuchida ,  Syun Ashizawa

公开(公告)号：US09736942B2

公开(公告)日：2017-08-15

申请号：US15211967

申请日：2016-07-15

Applicant: TDK Corporation

Inventor： Nobuo Takagi

IPC: H05K1/16 ,  H05K3/30 ,  H01F27/24 ,  H01F27/29 ,  H01F27/28 ,  H05K1/18 ,  H05K1/11 ,  H01F41/076

CPC classification number: H05K1/165 ,  H01F17/045 ,  H01F27/24 ,  H01F27/2823 ,  H01F27/292 ,  H01F41/076 ,  H01F2017/0093 ,  H05K1/111 ,  H05K1/16 ,  H05K1/181 ,  H05K3/30 ,  H05K2201/09409 ,  H05K2201/09427 ,  H05K2201/1003 ,  Y02P70/611

Abstract: Disclosed herein is a coil component that includes a drum-shaped core having a flange portion and a winding core around which a wire is wound. The flange portion includes first and second side surface opposite to each other, and a mounting surface. The mounting surface of the flange portion includes first and second convex portions and a concave portion positioned therebetween. The first convex portion has a third side surface parallel to the first side surface of the flange portion. The second convex portion has a fourth side surface parallel to the second side surface of the flange portion. A level difference between the first side surface and the third side surface is larger than a level difference between the second side surface and the fourth side surface.

公开(公告)号：US20160155561A1

公开(公告)日：2016-06-02

申请号：US14947953

申请日：2015-11-20

Applicant: TDK CORPORATION

Inventor： Nobuo Takagi ,  Toshio Tomonari ,  Setu Tsuchida ,  Syun Ashizawa

IPC: H01F27/28

CPC classification number: H01F27/2823 ,  H01F17/045

Abstract: A pulse transformer includes a winding drum and a coil portion in which wires are wound around the winding core. The coil portion includes a first general winding area, a second general winding area, and a low density winding area. In the first general winding area, the wires are mutually closely wound around the winding core. In the second general winding area, the wires continuing from the wires of the first general winding area are mutually closely wound around the winding core. The low density winding area is formed along a winding axis of the winding core between the first general winding area and the second general winding area and has a low winding density of the wires along the winding axis.

Abstract translation: 脉冲变压器包括卷绕鼓和缠绕在绕组芯上的线圈部分。 线圈部分包括第一通用绕组区域，第二通用绕组区域和低密度绕组区域。 在第一个通用绕组区域中，电线相互紧密缠绕在绕组芯上。 在第二通用绕组区域中，从第一通用绕组区域的电线延续的电线相互紧密缠绕在绕组芯上。 所述低密度卷绕区域沿着所述卷芯的卷绕轴线在所述第一一般卷绕区域和所述第二一般卷绕区域之间形成，并且所述布线沿着卷绕轴线具有低的卷绕密度。