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公开(公告)号：US11935679B2
公开(公告)日：2024-03-19
申请号：US17487057
申请日：2021-09-28
申请人： TDK CORPORATION
CPC分类号： H01F27/24 , H01F17/04 , H01F27/2823 , H01F27/2828 , H01F27/29 , H01F27/292 , H01F41/064 , H01F41/10 , H01F17/045
摘要： A coil device includes: a core including a winding core part and a flange part at an axial end part of the winding core part, a coil part including a first wire and a second wire wound around the winding core part, a first terminal electrode, formed on a flange part mounting surface and a lead-out part of the first wire is connected, and a second terminal electrode, formed on the mounting surface of the flange part spaced apart from the first terminal electrode and a lead-out part of the second wire is connected, in which the flange part includes a concave part, recessed from the upper surface of the flange part and from an outer end surface of the flange part in order to have bottoms. The coil device is easy to connect a wire and has excellent bonding strength even when the connecting part becomes the mounting surface.
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公开(公告)号：US11636967B2
公开(公告)日：2023-04-25
申请号：US17000963
申请日：2020-08-24
申请人： TDK CORPORATION
摘要： A coil device has a core including a winding core portion and a flange portion formed on an X-axis-direction end portion of the winding core portion, a coil portion formed by wires being wound around the winding core portion, and terminal electrodes provided on the flange portion. Leadout portions of the wires are respectively connected to the terminal electrodes. A main protuberance having a protuberating shape is formed on an upper surface of the flange portion. The first and second leadout portions of the wires are connected to the first and second terminal electrodes outside the main protuberance in the X-axis direction.
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公开(公告)号：US11164692B2
公开(公告)日：2021-11-02
申请号：US16027865
申请日：2018-07-05
申请人： TDK CORPORATION
摘要： A coil device includes: a core including a winding core part and a flange part at an axial end part of the winding core part, a coil part including a first wire and a second wire wound around the winding core part, a first terminal electrode, formed on a flange part mounting surface and a lead-out part of the first wire is connected, and a second terminal electrode, formed on the mounting surface of the flange part spaced apart from the first terminal electrode and a lead-out part of the second wire is connected, in which the flange part includes a concave part, recessed from the upper surface of the flange part and from an outer end surface of the flange part in order to have bottoms. The coil device is easy to connect a wire and has excellent bonding strength even when the connecting part becomes the mounting surface.
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公开(公告)号：US10312013B2
公开(公告)日：2019-06-04
申请号：US15426445
申请日：2017-02-07
申请人： TDK Corporation
发明人： Yoshihiro Kawasaki , Syun Ashizawa , Hirohumi Asou , Nobuo Takagi
IPC分类号： H01F27/29 , H01F27/255 , H01F27/28 , H01F3/10
摘要： 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 soft magnetic metal powder having a flat shape is mixed in binder resin, the magnetic top plate being fixed to the first and second flange portions.
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公开(公告)号：US11515075B2
公开(公告)日：2022-11-29
申请号：US16198300
申请日：2018-11-21
申请人： TDK CORPORATION
IPC分类号： H01F27/28 , H01F41/069 , H01F17/04 , H01F27/24 , H01F41/076 , H01F27/29
摘要： A coil device includes a core and a coil portion. The core includes a winding core part and a flange part disposed at one end of the winding core part in an axial direction thereof. The coil portion is formed by winding a first wire and a second wire around the winding core part. The flange part includes first and second grooves passed by a leading part of the first wire or the second wire. The first groove extends toward an outside of the flange part. The second groove extends toward the outside of the flange part at an angle differing from that of the first groove.
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公开(公告)号：US10770219B2
公开(公告)日：2020-09-08
申请号：US15848618
申请日：2017-12-20
申请人： TDK Corporation
发明人： Yoshihiro Kawasaki , Kouyu Ohi , Hirohumi Asou , Syun Ashizawa
摘要： Disclosed herein is a coil component that includes a drum core having a winding core part and first and second flange parts provided on both sides of the winding core part; a wire wound around the winding core part; a plurality of terminal electrodes connected with end portions of the wire, each of the terminal electrodes being provided on an associated one of the first and second flange parts; and a top plate fixed to the first and second flange parts. The top plate includes a magnetic layer comprising magnetic powder and binder resin, and a resin layer having a smaller content of the magnetic powder than that of the magnetic layer. The resin layer is positioned between the first and second flange parts and the magnetic layer.
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公开(公告)号：US10210988B2
公开(公告)日：2019-02-19
申请号：US15426390
申请日：2017-02-07
申请人： TDK Corporation
发明人： Yoshihiro Kawasaki , Syun Ashizawa , Hirohumi Asou , Nobuo Takagi
IPC分类号： H01F27/29 , H01F27/255 , H01F27/28 , H01F3/10
摘要： 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.
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公开(公告)号：US11948717B2
公开(公告)日：2024-04-02
申请号：US17002094
申请日：2020-08-25
申请人： TDK CORPORATION
CPC分类号： H01F27/24 , H01F17/045 , H01F27/263 , H01F27/29 , H01F27/292 , H01F41/0206 , H01F41/04 , H01F1/344
摘要： A coil device includes: a drum core having first and second flange portions and a winding core portion therebetween; a coil wound around the core portion; a plate core connected to first and second flange portions first and second flange surfaces at a first direction side; a first electrode terminal on the first flange portion, one coil end portion electrically connected on the first electrode terminal; and a second electrode terminal on the second flange portion, the other coil end portion electrically connected on the second electrode terminal. The plate core has a first and second projecting portions respectively protruding toward the first and second flange surfaces and having first and second flat surfaces facing the first and second flange surfaces. The drum core and the plate core are connected by abutting and bonding the first and second flange surfaces against the first and second flat surfaces.
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公开(公告)号：US11621118B2
公开(公告)日：2023-04-04
申请号：US16782148
申请日：2020-02-05
申请人： TDK CORPORATION
摘要： A coil device includes a core including a winding core portion and a flange portion provided in an end portion of the winding core portion in an X-axis direction, a coil portion formed by a first wire and a second wire being wound around the winding core portion, and a first terminal electrode formed on one end side of the flange portion in a Y-axis direction, a first lead portion of the first wire being connected to the first terminal electrode, and a second terminal electrode formed on the other end side of the flange portion in the Y-axis direction, a second lead portion of the second wire being connected to the second terminal electrode. The width of the flange portion along X-axis-direction is different between one end and the other end of the flange portion in the Y-axis-direction.
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公开(公告)号：US10014101B2
公开(公告)日：2018-07-03
申请号：US15426325
申请日：2017-02-07
申请人： TDK Corporation
发明人： Yoshihiro Kawasaki , Syun Ashizawa , Hirohumi Asou , Nobuo Takagi
CPC分类号： H01F27/255 , H01F3/10 , H01F17/045 , H01F27/2823 , H01F27/2828 , H01F27/29 , H01F27/292
摘要： 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 upper surface than in a surface layer part on a side of the lower surface.
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