公开(公告)号：US20210319942A1

公开(公告)日：2021-10-14

申请号：US17223869

申请日：2021-04-06

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Tatsuya SASAKI ,  Shinya HIRAI ,  Yuuji IGARASHI ,  Shin HASEGAWA

IPC: H01F17/06 ,  H01F41/04 ,  H01F27/29

Abstract: An inductor component having such a characteristic property that the assembly of the inductor component can be made simple and the welded state in the inductor component can be made stable. The inductor component comprises a ring-shaped core; a coil which comprises a plurality of pin members, and in which adjacent pin members are connected and are wound around the coil; and a connecting member which connects the pin members adjacent to each other in a direction of an axis of the coil.

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.

公开(公告)号：US20200373076A1

公开(公告)日：2020-11-26

申请号：US16849903

申请日：2020-04-15

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yuuji IGARASHI ,  Akio IGARASHI

IPC: H01F27/29 ,  H01F41/10 ,  H01F27/30

Abstract: A coil component includes a wire; a core having a winding core around which the wire is wound and a flange portion provided at an end portion of the winding core in an axial direction; and a terminal electrode to which the wire is connected and that is provided on the flange portion. The terminal electrode has a projecting portion that sticks out in the axial direction relative to the flange portion. The projecting portion has a flat surface along which the wire is thermocompression-bonded. Thermocompression bonding of the wire is performed in a state where an interval between a head surface of a heater chip and the flat surface becomes narrower from a flange portion side toward a front end side of the projecting portion. A degree of crushing of the wire decreases from the front end side toward the flange portion side of the projecting portion.

公开(公告)号：US20200258677A1

公开(公告)日：2020-08-13

申请号：US16782982

申请日：2020-02-05

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Akio IGARASHI ,  Yuuji IGARASHI ,  Koji ONISHI ,  Takuya ISHIDA ,  Takao MIYAMOTO

IPC: H01F27/29 ,  H01F41/069 ,  H01F41/10 ,  H01F27/28 ,  H01F41/076 ,  H01F27/30

Abstract: Advantage is taken of the fact that tin has a higher efficiency of absorption of a laser beam than, for example, copper. A method of manufacturing a coil component includes preparing a wire that includes a linear, central conductor and an insulating coating that covers a circumferential surface of the central conductor, preparing a metal terminal that is to be electrically connected to the central conductor at an end portion of the wire and that has a surface on which a tin-containing film that contains tin is disposed and above which at least the end portion of the wire is to be disposed, and welding the central conductor of the wire to the metal terminal by irradiating at least the tin-containing film with a laser beam with the end portion of the wire disposed along the tin-containing film.

公开(公告)号：US20210358672A1

公开(公告)日：2021-11-18

申请号：US17320122

申请日：2021-05-13

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Toshimitsu TAMURA ,  Tatsuya SASAKI ,  Shin HASEGAWA ,  Ikuno SUGIYAMA ,  Shinya HIRAI ,  Yuuji IGARASHI

IPC: H01F27/24 ,  H01F27/32 ,  H01F41/04

Abstract: An inductor component includes a core having an annular shape; an insulating member that covers a portion of the core; a coil wound around the core and the insulating member; and a buffer member that is elastic. The core has a first face, a second face that crosses the first face, and a third face that faces the second face and crosses the first face. The insulating member is provided to cover the first face, a portion of the second face, and a portion of the third face. The core and the insulating member are bonded to each other with the buffer member interposed therebetween.

公开(公告)号：US20200258678A1

公开(公告)日：2020-08-13

申请号：US16783299

申请日：2020-02-06

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Akio IGARASHI ,  Yuuji IGARASHI ,  Takao MIYAMOTO ,  Takuya ISHIDA ,  Koji ONISHI

IPC: H01F27/29 ,  H01F27/24 ,  H01F27/28

Abstract: An adhesive layer is in contact with a rising portion of a metal terminal and an outer end surface of a flange portion of a drum-shaped core. A surface of the rising portion that faces the outer end surface is an inclined surface that inclines with respect to the outer end surface. The thickest portion of the adhesive layer is located near a position at which a distance between the inclined surface and the outer end surface is largest. The thickness of the thickest portion of the adhesive layer is 13 μm or more.

公开(公告)号：US20190287715A1

公开(公告)日：2019-09-19

申请号：US16292016

申请日：2019-03-04

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Akio IGARASHI ,  Yuuji IGARASHI

IPC: H01F27/32 ,  H01F27/28

Abstract: A coil component includes a blocking material that contains a resin and that blocks a route that leads to a gap between turns of a wire from an outside at portions of the wire that are in close contact with each other between adjoining turns.

公开(公告)号：US20190156990A1

公开(公告)日：2019-05-23

申请号：US16169685

申请日：2018-10-24

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Akio IGARASHI ,  Yuuji IGARASHI ,  Kenji HASHIMOTO

IPC: H01F27/28 ,  H01F27/24

Abstract: A coil component includes a drum core including a winding core portion and a flange portion disposed on an end portion thereof the winding core portion in its axial direction, a planar core having a lower principal surface, and a wire wound around the winding core portion. The flange portion includes an inner end surface, an outer end surface, a bottom surface, and a top surface. The inner end surface positions the end portion of the winding core portion. The bottom surface links the inner end surface and the outer end surface and placed so as to face a mounting substrate side when being mounted. The lower principal surface of the planar core is fixed to the top surface with an adhesive interposed therebetween. The top surface includes a protrusion with a vertex positioned closer to the inner end surface than to the outer end surface.