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公开(公告)号：US20240079176A1
公开(公告)日：2024-03-07
申请号：US18457064
申请日：2023-08-28
Applicant: TDK CORPORATION
Inventor： Toshiyuki HORIKAWA , Shinji HIGA
CPC classification number: H01F27/29 , H01F27/2828 , H01F27/306
Abstract: A coil device includes: a bobbin having a winding core portion with a hollow cylindrical shape; a core at least partially disposed inside the winding core portion; a wire having a coil portion wound around the winding core portion and a lead portion having a wire connection portion led out from the coil portion to extend substantially parallel to a winding axis O of the coil portion; and a terminal portion having a connection portion connected to the wire at the wire connection portion. A connection portion inner end, which is a position closest to the winding axis in an X-axis direction perpendicular to the winding axis O, of contact portions of the wire connection portion in the connection portion is disposed closer to the winding axis O in the X-axis direction than a first outer end portion located at a position farthest from the winding axis O in the X-axis direction in the bobbin.
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公开(公告)号：US20250054676A1
公开(公告)日：2025-02-13
申请号：US18794672
申请日：2024-08-05
Applicant: TDK Corporation
Inventor： Masayuki NAGATA , Toshiyuki HORIKAWA , Masaaki IWAKURA , Tomohiro FURUICHI , Kaito TANIZAKI
Abstract: A coil device includes a core containing a magnetic material and a wire disposed in a coil shape around at least a part of the core. The core includes a middle leg portion and a first base portion. The middle leg portion has a winding portion of the wire disposed therearound. The first base portion is disposed apart by a predetermined distance from one end of the middle leg portion along a winding axis of the winding portion. 70% or more, preferably 80% or more, more preferably 90% or more, or still more preferably 95% or more of a volume of the middle leg portion is located below a venting surface of a heat-dissipating resin.
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公开(公告)号：US20240136120A1
公开(公告)日：2024-04-25
申请号：US18491149
申请日：2023-10-19
Applicant: TDK CORPORATION
Inventor： Ge LI , Toshiyuki HORIKAWA
CPC classification number: H01F27/325 , H01F38/08 , H01F27/306
Abstract: A coil device includes a bobbin, a first coil provided to the bobbin, and a second coil provided outside the first coil. The first coil includes a first portion provided inside the second coil and a second portion next to the first portion and the second coil along a winding axis of the first portion. A first protrusion portion, a second protrusion portion, and a partition protrusion portion each protruding in a radial direction of the bobbin are formed on an outer peripheral surface of the bobbin.
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公开(公告)号：US20240321506A1
公开(公告)日：2024-09-26
申请号：US18608112
申请日：2024-03-18
Applicant: TDK CORPORATION
Inventor： Kiho HWANG , Toshiyuki HORIKAWA
CPC classification number: H01F27/2823 , H01F27/292 , H01F27/325 , H01F27/24
Abstract: A coil device including bobbins, a continuous first wire wound around the bobbins, and a continuous second wire wound around the bobbins. The bobbins include a first bobbin, a second bobbin, and a third bobbin. The first wire is wound around the first bobbin to form a first coil. The second wire is wound around the second bobbin to form a second coil. The first wire is wound around the third bobbin to form a third primary coil and the second wire is wound around the third bobbin to form a third secondary coil.
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公开(公告)号：US20240321499A1
公开(公告)日：2024-09-26
申请号：US18588237
申请日：2024-02-27
Applicant: TDK CORPORATION
Inventor： Toshiyuki HORIKAWA , Shinichiro KOKUBO , Ryoji ONO
CPC classification number: H01F27/08 , H01F27/263 , H01F27/2823 , H01F27/323
Abstract: A coil device including a first winding unit around which a first wire is wound, a second winding unit around which a second wire is wound, a middle leg core disposed radially inside the first winding portion and the second winding portion, an outer leg core disposed radially outside the first winding unit and the second winding unit, and a first combining core coupling the middle leg core with the outer leg core. At least one of an inner circumferential surface of the first winding portion and an inner circumferential surface of the second winding portion is in contact with an outer circumferential surface of the middle leg core.
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Patent Agency Ranking
公开(公告)号：US20240249876A1
公开(公告)日：2024-07-25
申请号：US18419011
申请日：2024-01-22
Applicant: TDK Corporation
Inventor： Toshiyuki HORIKAWA , Kiho Hwang
CPC classification number: H01F27/325 , H01F27/24 , H01F27/306
Abstract: A coil device includes a first coil and a second coil, bobbins combined with each other and provided with the first coil and the second coil, and a core attached to the bobbins. The core includes a pair of outer leg portions, a middle leg portion located between the pair of outer leg portions, and a protrusion located between one of the outer leg portions and the middle leg portion. The second coil is disposed in a range different from that of the first coil so as to surround the middle leg portion and the protrusion.
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公开(公告)号：US20210249180A1
公开(公告)日：2021-08-12
申请号：US17089859
申请日：2020-11-05
Applicant: TDK CORPORATION
Inventor： Toshiyuki HORIKAWA , Masaaki IWAKURA , Masaru KUMAGAI , Shoichi SASAKI
Abstract: A coil device includes a bobbin, a terminal, and a terminal block. The bobbin includes a winding portion for winding a wire around an outer circumference of the winding portion. The terminal is connectable with an end of the wire. The terminal block holds the terminal. The terminal is movable both in a first axis and a second axis of the bobbin.
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公开(公告)号：US20250157723A1
公开(公告)日：2025-05-15
申请号：US18930017
申请日：2024-10-29
Applicant: TDK CORPORATION
Inventor： Shoichi TANI , Toshiyuki HORIKAWA
Abstract: A coil device includes a core including a winding core portion, a winding portion of a wire disposed in a coil shape around the winding core portion, and a base plate provided with a terminal to which a leading portion of the wire led out from the winding portion is attached. The core is disposed on a first surface as one surface of the base plate. A wire connection portion of the terminal is disposed on a second surface as the other surface of the base plate located opposite to the first surface. The base plate is provided with a base-side passage for passing and guiding the leading portion of the wire from the winding portion to the wire connection portion.
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公开(公告)号：US20250054678A1
公开(公告)日：2025-02-13
申请号：US18925546
申请日：2024-10-24
Applicant: TDK Corporation
Inventor： Masayuki NAGATA , Toshiyuki HORIKAWA , Masaaki IWAKURA , Tomohiro FURUICHI , Kaito TANIZAKI
Abstract: A coil device has a core including a magnetic material and a wire disposed in a coil shape around at least a part of the core. 70% or more of a volume of a middle leg portion of the core is located below an atmosphere open surface of a heat dissipation resin. An outer division gap of the core is provided in a middle or an end portion of the outer leg portion, and a partial adhesive portion in which an adhesive is interposed and an air layer in which an adhesive is not interposed are provided in the outer division gap.
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公开(公告)号：US20250054677A1
公开(公告)日：2025-02-13
申请号：US18794700
申请日：2024-08-05
Applicant: TDK Corporation
Inventor： Masayuki NAGATA , Toshiyuki HORIKAWA , Masaaki IWAKURA , Tomohiro FURUICHI , Kaito TANIZAKI
Abstract: A coil device includes a core containing a magnetic material and a wire disposed in a coil shape around at least a part of the core. 70% or more of a volume of a middle leg portion of the core is located below a venting surface of a heat-dissipating resin. Between a first base portion of the core and one end of the middle leg portion is an air layer. The air layer is located below the venting surface of the heat-dissipating resin.
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