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公开(公告)号：US09852841B2
公开(公告)日：2017-12-26
申请号：US14596446
申请日：2015-01-14
IPC分类号： H01F27/28 , H01F27/30 , H01F41/061
CPC分类号： H01F27/2847 , H01F27/303 , H01F27/306 , H01F41/061
摘要： A coil structure includes a conductor band and a first insulating plate. The conductor band turns around a coil axis in such a manner that the conductor band folds at a plurality of portions which form a plurality of folded portions. The first insulating plate includes a first edge portion which abuts along at least one of the plurality of folded portions. At least part of the conductor band is wound around the first insulating plate.
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公开(公告)号：US09660546B2
公开(公告)日：2017-05-23
申请号：US14636995
申请日：2015-03-03
摘要： A coil structure includes: a magnetic core that defines a closed loop magnetic path in which a magnetic flux flows, the magnetic core including a core leg; a coil that is wound around the core leg about a coil axis extending in a first direction, the coil generating the magnetic flux; a detour member that is separate from the magnetic core, the detour member defining a detour magnetic path that detours around the closed loop magnetic path between first and second points, the detour member including a first piece that defines the first point and a second piece that defines the second point; and a fixing portion that includes an adjoining member adjoining the core leg and a connecting portion connecting at least one of the first piece and the second piece to the adjoining member and fixes positional relations among the core leg and the first and second points.
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公开(公告)号：US12101034B2
公开(公告)日：2024-09-24
申请号：US17441184
申请日：2020-02-14
CPC分类号： H02M3/33573 , H02M1/0064 , H02M3/003 , H02M3/015
摘要： A power conversion device is equipped with at least one leg circuit containing two switching elements connected in series, respectively, a transformer having a primary winding and a secondary winding, a capacitor connected between the leg circuit and one end of the primary winding, a switch circuit, and a rectifier circuit. The switch circuit selectively connects one of a plurality of winding sections of the secondary winding that are different from each other to the rectifier circuit.
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公开(公告)号：US12057282B2
公开(公告)日：2024-08-06
申请号：US18112376
申请日：2023-02-21
发明人： Takehiko Yamakawa , Kazuyuki Sakiyama , Akira Kato
CPC分类号： H01H50/546 , H01H47/22 , H01H50/18 , H01H50/36 , H01H50/44
摘要： An electromagnetic relay includes a fixed contact, a moving contact, an electromagnet device, and a second coil. The moving contact moves from a closed position where the moving contact is in contact with the fixed contact to an open position where the moving contact is out of contact with the fixed contact, and vice versa. The electromagnet device includes a first coil and a mover. The mover is actuated on receiving a magnetic flux generated when a current flows through the first coil to move the moving contact from one of the closed position or the open position to the other position. The second coil gives, when a current flows through the second coil, at least a magnetic flux, of which a direction is opposite from a direction of the magnetic flux generated by the first coil, to the mover.
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公开(公告)号：US11373828B2
公开(公告)日：2022-06-28
申请号：US17040966
申请日：2019-02-12
摘要： An electromagnet device moves two moving contacts from one of a closed position or an open position to the other position when an electric current flows through a coil. A regenerative current coming from the coil flows through a regeneration unit when the coil makes a transition from an energized state where the coil is supplied with an electric current from a power supply to a non-energized state where the coil is supplied with no electric current from the power supply. The control unit causes the regenerative current to flow through a load by controlling a switch when the coil makes the transition from the energized state to the non-energized state.
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公开(公告)号：US09705409B2
公开(公告)日：2017-07-11
申请号：US14933592
申请日：2015-11-05
发明人： Masahiro Yamaoka , Takehiko Yamakawa , Akira Kato
CPC分类号： H02M3/33523 , H01F21/00 , H01F21/08 , H01F30/10 , H01F30/12 , H02M3/3378 , H02M2001/0058 , Y02B70/1491
摘要： A power converter includes a transformer including a transformer including a primary winding and a secondary winding magnetically coupled to the primary winding, a bridge circuit including a switching element, and an inductor. A direct current voltage is converted into an alternating current voltage by turning on and off the switching element in the bridge circuit. An output voltage in the secondary winding is induced by supplying the alternating current voltage to the primary winding. The inductor is disposed on a path connecting the switching element and the primary winding. A resonance inductance value Lr including a leakage inductance value of the transformer and an inductance value of the inductor satisfies Formula 1.
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7.发明授权公开(公告)号：US11705260B2
公开(公告)日：2023-07-18
申请号：US16942480
申请日：2020-07-29
CPC分类号： H01F5/02 , H01F5/06 , H01F27/325 , H01F2005/025 , H02M1/0058 , H02M3/01 , H02M3/33571 , H02M3/33573 , Y02B70/10
摘要： A magnetic device includes a winding, and insulators by which the winding is surrounded. Each of the insulators is in contact with the winding. A gap exists between each two adjacent of the insulators in a winding direction of the winding.
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公开(公告)号：US20230207243A1
公开(公告)日：2023-06-29
申请号：US18112376
申请日：2023-02-21
发明人： Takehiko Yamakawa , Kazuyuki Sakiyama , Akira Kato
CPC分类号： H01H50/546 , H01H47/22 , H01H50/18 , H01H50/36 , H01H50/44
摘要： An electromagnetic relay includes a fixed contact, a moving contact, an electromagnet device, and a second coil. The moving contact moves from a closed position where the moving contact is in contact with the fixed contact to an open position where the moving contact is out of contact with the fixed contact, and vice versa. The electromagnet device includes a first coil and a mover. The mover is actuated on receiving a magnetic flux generated when a current flows through the first coil to move the moving contact from one of the closed position or the open position to the other position. The second coil gives, when a current flows through the second coil, at least a magnetic flux, of which a direction is opposite from a direction of the magnetic flux generated by the first coil, to the mover.
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