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公开(公告)号：US20180166783A1
公开(公告)日：2018-06-14
申请号：US15835973
申请日：2017-12-08
Applicant: SUMIDA CORPORATION
Inventor： Yoshinori Inoue , Isao Douchi , Kei Tanaka , Takanari Fujimaki , Yoshinori Miura , Hiroshi Kawasaki , Hiromitsu Kuriki , Takanobu Rokuka , Hiroyuki Miyazaki
IPC: H01Q7/08
CPC classification number: H01Q7/08 , H01F27/02 , H01F27/266 , H01F38/14 , H01Q1/3241
Abstract: An antenna device including a first rod-shaped core having a flange portion and a second rod-shaped core having a flange portion, which are arranged in series and including a first coil and a second coil, wherein the end surface of the first rod-shaped core and the end surface of the second rod-shaped core are spaced.
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公开(公告)号：US11855546B2
公开(公告)日：2023-12-26
申请号：US17685440
申请日：2022-03-03
Applicant: SUMIDA CORPORATION
Inventor： Hiroyuki Miyazaki
CPC classification number: H02M3/3388 , H02M1/08
Abstract: An output stabilization circuit includes: a primary-side circuit including first and second self-excited oscillator circuits connected to a direct-current power supply; and a secondary-side circuit, wherein the first and second self-excited oscillator circuits include power transmission coils, resonant capacitors, switching element pairs, and feedback coils, the second self-excited oscillator circuit further includes a phase shift filter, the phase shift filter includes a primary-side control coil that is magnetically coupled to a secondary-side control coil included in the secondary-side circuit and that has a characteristic that an inductance changes depending on a current flowing through the secondary-side control coil.
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公开(公告)号：US11257618B2
公开(公告)日：2022-02-22
申请号：US15890442
申请日：2018-02-07
Applicant: SUMIDA CORPORATION
Inventor： Hiroyuki Miyazaki
Abstract: A transformer includes: an upper E core; a lower E core; a first coil portion disposed so as to cover a magnetic leg of the upper E core and a magnetic leg of the lower E core; and a second coil portion disposed so as to cover the periphery of the first coil portion in a direction perpendicular to the central axis of winding of the first coil portion. The first coil portion includes a bobbin and an edgewise coil wound around the bobbin. The second coil portion includes a bobbin and an edgewise coil wound around the bobbin.
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公开(公告)号：US10447281B2
公开(公告)日：2019-10-15
申请号：US15889683
申请日：2018-02-06
Applicant: SUMIDA CORPORATION
Inventor： Hiroyuki Miyazaki
IPC: H03L7/085 , H02M7/5395 , H03L7/093 , H03L7/107 , H02M7/5387 , H02M1/00 , H02M7/48
Abstract: A phase adjusting circuit is provided that can highly precisely adjust frequencies throughout the entire frequency range to be dealt with. A PLL circuit includes: a reference-signal input terminal from which a reference signal is input; a feedback-signal input terminal from which a feedback signal is input; and an output terminal from which an output signal based on a phase difference between the reference signal and the feedback signal is output. A filter circuit is connected to the reference-signal input terminal and the output terminal, and causes a phase of the reference signal to be delayed when the oscillation frequency of an inverter circuit including the PLL circuit falls in a high range. A delay circuit is connected to the output terminal, and causes the output signal to be delayed when the oscillation frequency of the inverter circuit falls in a low range lower than the high range.
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公开(公告)号：US20180218831A1
公开(公告)日：2018-08-02
申请号：US15840148
申请日：2017-12-13
Applicant: SUMIDA CORPORATION
Inventor： Hiroyuki Miyazaki
IPC: H01F27/32 , H01F27/28 , H01F41/061 , H01F41/098
CPC classification number: H01F27/325 , H01F5/02 , H01F27/006 , H01F27/2823 , H01F27/323 , H01F41/061 , H01F41/098
Abstract: A coil component includes an edgewise coil and a bobbin around which the edgewise coil is wound. The bobbin includes a tubular bobbin body, and plural position-limiting protruding portions arranged in plural portions on the outer peripheral surface of the bobbin body and limit the position of each winding portion of the edgewise coil in the axial direction of the bobbin body. The plural position-limiting protruding portions include first and second position-limiting protruding portions, which are disposed at different positions in the axial direction of the bobbin body. The edgewise coil includes a first winding portion that is in pressure contact with the first position-limiting protruding portion toward the second position-limiting protruding portion, and a second winding portion that is in pressure contact with the second position-limiting protruding portion toward the first position-limiting protruding portion.
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Patent Agency Ranking
公开(公告)号：US11340267B2
公开(公告)日：2022-05-24
申请号：US16926826
申请日：2020-07-13
Applicant: SUMIDA CORPORATION
Inventor： Hiroyuki Miyazaki
Abstract: A current detection device is configured by a current path through which a first current flows, a current path through which a second current flows, a switching element that switches the current paths and allows the first current and the second current to flow alternately, a common coil section through which an induction current flows by the first current and the second current, and a turn current path that alternates a first induction current flowing through the coil section by the first current and a second induction current flowing through the coil section by the second current.
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公开(公告)号：US10305188B2
公开(公告)日：2019-05-28
申请号：US15672740
申请日：2017-08-09
Applicant: SUMIDA CORPORATION
Inventor： Yoshinori Inoue , Isao Douchi , Kei Tanaka , Takanari Fujimaki , Yoshinori Miura , Hiroshi Kawasaki , Hiromitsu Kuriki , Takanobu Rokuka , Hiroyuki Miyazaki
Abstract: An antenna device includes: a plurality of cores arranged in series; a coil; and a capacitor connected to the coil, in which a first core, which is selected from the plurality of cores, and a second core, which is selected from the plurality of cores and is arranged on any one end portion side of the first core, are arranged apart from each other, and in which at least one end surface, which is selected from an end surface of the first core on a side on which the second core is arranged and an end surface of the second core on a side on which the first core is arranged, is located on an inner peripheral side of the coil.
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公开(公告)号：US12198849B2
公开(公告)日：2025-01-14
申请号：US17570495
申请日：2022-01-07
Applicant: SUMIDA CORPORATION
Inventor： Hiroyuki Miyazaki
Abstract: A method is provided for manufacturing a transformer. The method includes preparing a core, a first coil portion that covers at least part of the core, and a second coil portion that covers a periphery of the first coil portion perpendicular to a central axis of winding of the first coil portion. The first and second coil portions each include a bobbin and a coil wound therearound. The coil of the first or second coil portion is an edgewise coil. The method also includes: screwing the bobbin and coil of the first coil portion with each other, and screwing the bobbin and coil of the second coil portion with each other; and attaching the second coil portion to the outside of the first coil portion perpendicular to the central axis of winding of the first coil portion, and attaching the core to sandwich the first and second coil portions in an axial direction of the first coil portion.
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公开(公告)号：US11239815B2
公开(公告)日：2022-02-01
申请号：US16976437
申请日：2019-02-25
Applicant: SUMIDA CORPORATION
Inventor： Hiroyuki Miyazaki
Abstract: A resonance matching circuit used in a power supply system that supplies electric power by an electric field coupling method is provided. The resonance matching circuit includes an inverter circuit that functions as a voltage source, parallel transformer devices that are connected in parallel to the inverter circuit and transmit a current supplied from the inverter circuit, and a timing adjustment circuit that is located between the inverter circuit and the parallel transformer devices and adjusts an input timing of a pulse current supplied by the inverter circuit.
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公开(公告)号：US11201552B2
公开(公告)日：2021-12-14
申请号：US16909293
申请日：2020-06-23
Applicant: SUMIDA CORPORATION
Inventor： Hiroyuki Miyazaki
Abstract: A power supply system is provided that can synchronize a primary circuit and a secondary circuit with high accuracy and are advantageous in downsizing and simplification. The system includes a first circuit including: a battery device; transistor elements to which a voltage is supplied; coil units to which a feeding current is supplied in an on state of the transistor elements; a capacitor that changes a flow direction of the feeding current; and a driving coil that turns on/off the transistor elements, and a second circuit including: coil units and a driving coil in which induced electromotive force is generated; transistor elements that are turned on/off by the induced electromotive force; and a battery device that receives supply of power in an on state of the transistor elements.
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