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公开(公告)号：US20180374631A1
公开(公告)日：2018-12-27
申请号：US16006508
申请日：2018-06-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Akio IGARASHI , Kentaro YAMAGUCHI
Abstract: A terminal electrode has a flat surface to which an end portion of a wire is connected, a low surface lower in a thickness direction of the terminal electrode than the flat surface, and a shift surface connects the flat surface and the low surface and increases a height in the thickness direction from the low surface to the flat surface. The wire has a first portion, a second portion and a third portion opposing the flat surface, the shift surface and the low surface, respectively. The first portion has a flattened cross-sectional shape, and the second portion has a semi-flattened cross-sectional shape.
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公开(公告)号：US20180097327A1
公开(公告)日：2018-04-05
申请号：US15714375
申请日：2017-09-25
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Takashi MURAKAMI , Akio IGARASHI , Koji ONISHI
IPC: H01R43/20
Abstract: A metal terminal where a connecting portion has a receiving portion which receives a wire and a contact segment which extends from the receiving portion by way of a bending scheduled portion is prepared. By applying heat and pressure in a state where the wire is placed on the receiving portion for temporarily fixing the wire, the wire is adhered to the receiving portion using a molten or softened insulating resin coating as an adhesive agent. Next, the connecting portion is bent by way of the bending scheduled portion such that the contact segment faces the receiving portion by way of the wire and the contact segment is brought into contact with the wire. Next, by irradiating a laser beam to a portion of the metal terminal, the wire and the metal terminal are welded to each other.
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公开(公告)号：US20180096790A1
公开(公告)日：2018-04-05
申请号：US15716145
申请日：2017-09-26
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Takashi MURAKAMI , Akio IGARASHI , Koji ONISHI
IPC: H01F41/10 , H01F27/29 , H01F41/076
CPC classification number: H01F41/10 , H01F17/045 , H01F27/2828 , H01F27/29 , H01F41/076
Abstract: A method of manufacturing a coil component including a step of welding a wire to a metal terminal by laser welding capable of making positional displacement of the wire only minimally occur. As a metal terminal, a metal terminal having a connecting portion on which a positioning groove for receiving and positioning a portion of the wire is formed is prepared. The wire is temporarily fixed to the connecting portion in a state where the wire is positioned by being fitted in the positioning groove, and the wire and the metal terminal are welded to each other by irradiating a laser beam. The positioning groove is preferably formed into a V shape in cross section.
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公开(公告)号：US20170316873A1
公开(公告)日：2017-11-02
申请号：US15470394
申请日：2017-03-27
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Akio IGARASHI , Takashi MURAKAMI , Koji ONISHI
CPC classification number: H01F27/292 , H01F3/10 , H01F17/045 , H01F27/2823 , H01F27/2828 , H01F2017/0093
Abstract: A terminal electrode includes a base extending along the outer end face of a flange, a mounting part extending from the base along the bottom face of the flange via a first bending part that covers the edge portion where the outer end face and the bottom face meet, and a wire connection part extending from the base along a substantially horizontal face via a second bending part that covers the edge portion where the outer end face and the substantially horizontal face meet, the wire connection part being electrically connected to an end portion of a wire.
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公开(公告)号：US20230198574A1
公开(公告)日：2023-06-22
申请号：US18169736
申请日：2023-02-15
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tarou HIGUCHI , Yoshihiro IMANISHI , Yasushi SAITO , Akio IGARASHI , Hiroyuki HONDA , Masaki INUI , Minehito YOSHIDA
IPC: H04B3/56
Abstract: A transmission system capable of improving transmission characteristics in a low frequency range and having reduced size. A transmission system for superimposing power on a signal transmission path between a first circuit module and a second circuit module includes a first capacitor between the transmission path and a first interface IC in the first circuit module, a second capacitor between the transmission path and a second interface IC in the second circuit module, a first inductor between a first power supply circuit in the first circuit module and the transmission path, and a second inductor between a second power supply circuit in the second circuit module and the transmission path. A capacitance value of the first capacitor and a capacitance value of the second capacitor differ from each other. Inductance values of each of the first and second inductors are in a range from 20 [μH] to 50 [μH].
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Patent Agency Ranking
公开(公告)号：US20220084748A1
公开(公告)日：2022-03-17
申请号：US17455675
申请日：2021-11-19
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Akio IGARASHI , Koji ONISHI
Abstract: A connection section of a terminal electrode includes a reference surface, and an end portion of a wire and the connection section of the terminal electrode are connected to each other via a weld lump rising from the reference surface. A cover section to regulate an upper limit of the rise of the wire from the reference surface is provided in the terminal electrode. The cover section is so positioned as to cover at least part of the wire when viewed in a direction perpendicular to a direction in which the reference surface extends.
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公开(公告)号：US20210098148A1
公开(公告)日：2021-04-01
申请号：US17021693
申请日：2020-09-15
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Koji ONISHI , Takashi MURAKAMI , Akio IGARASHI
Abstract: A weld nugget portion that is obtained by welding a central conductor of a wire and a receiving portion of a metal terminal is formed on the receiving portion that receives an end portion of the wire with the weld nugget portion expanding from a surface of the receiving portion along which the wire is disposed. An area ratio of a blowhole to a section of the weld nugget portion that is along an imaginary cut plane that is perpendicular to the surface of the receiving portion along which the wire is disposed is no less than 0% and no more than 8.4% (i.e., from 0% to 8.4%), preferably no less than 0% and no more than 1.3% (i.e., from 0% to 1.3%). A central axis of the central conductor of the wire in the weld nugget portion extends along the imaginary cut plane.
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公开(公告)号：US20200243249A1
公开(公告)日：2020-07-30
申请号：US16721616
申请日：2019-12-19
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Akio IGARASHI
Abstract: A coil component includes a core including a winding core portion, a first wire, a second wire, a third wire, and a fourth wire that are wound around the winding core portion. A winding portion is formed by winding the respective first to fourth wires around the winding core portion. The winding portion includes a twisted wire portion in which the first wire, the second wire, the third wire, and the fourth wire are collectively twisted.
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公开(公告)号：US20190287710A1
公开(公告)日：2019-09-19
申请号：US16291993
申请日：2019-03-04
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Akio IGARASHI , Yuuji IGARASHI
IPC: H01F27/26 , H01F27/28 , H01F27/32 , C09J163/00
Abstract: In a coil component, a plate-shaped core is fixed to first and second flanges of a drum-shaped core with an adhesive interposed therebetween in a state that a lower principal surface of the plate-shaped core faces top surfaces of the first and second flanges. The adhesive is made of a hardened epoxy-based resin containing dicyandiamide.
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公开(公告)号：US20240047121A1
公开(公告)日：2024-02-08
申请号：US18490594
申请日：2023-10-19
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kazuhiko TAKENAKA , Shigeto YAMAMOTO , Ryota HASHIMOTO , Akio IGARASHI , Yuki KANBE
CPC classification number: H01F27/2823 , H01F27/29 , H01F17/04 , H01F2017/0093
Abstract: A coil component includes a drum core that includes a winding core portion and a pair of flange portions formed at the ends of the winding core portion, electrodes that are included in the pair of flange portions, and first and second wires that are wound around the winding core portion and that include extended portions electrically connected to the electrodes. The flange portions are continuous with the winding core portion and have slopes that guide the extended portions to the electrodes.
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