Patents by Inventor Kazuhiro Inaba

Kazuhiro Inaba has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11469032
    Abstract: A reactor including: a coil having a wound portion; a magnetic core that is disposed inside and outside the wound portion and forms a closed magnetic circuit; and a resin mold that includes an inner resin disposed between the wound portion and the magnetic core, and does not cover an outer-peripheral face of the wound portion.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: October 11, 2022
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Kazuhiro Inaba
  • Patent number: 11462354
    Abstract: Provided is a reactor including: a coil having wound portions; and a magnetic core including core pieces having inner core portions arranged inside of the wound portions. The core pieces are molded bodies of a composite material including a magnetic powder and a resin, and the reactor includes: projections that are integrally molded with and protrude from outer peripheral surfaces of the inner core portions, and that position the wound portions in radial directions by coming into contact with inner peripheral surfaces of the wound portions; and inner resin portions that fill spaces between the inner peripheral surfaces of the wound portions and the outer peripheral surfaces of the inner core portions excluding the projections.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: October 4, 2022
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Kazuhiro Inaba, Kouhei Yoshikawa
  • Patent number: 11450468
    Abstract: A reactor including: a coil having a winding portion; a magnetic core that is disposed extending inside and outside the winding portion, and is configured to form a closed magnetic circuit; and a resin mold that includes an inner resin disposed between the winding portion and the magnetic core, and does not cover an outer peripheral face of the winding portion.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: September 20, 2022
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Kazuhiro Inaba
  • Patent number: 11443880
    Abstract: A reactor including: a coil having a wound portion; a magnetic core that includes an inner core disposed in the wound portion, the magnetic core forming a closed magnetic circuit; and a resin mold including an inner resin that is interposed between the wound portion and the inner core, and at least partially covers the inner core, the resin mold not covering an outer-peripheral face of the wound portion.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: September 13, 2022
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Kazuhiro Inaba
  • Patent number: 11417455
    Abstract: Provided is a reactor including: a coil including two wound portions obtained by winding a winding wire; and a magnetic core in which the wound portions are arranged. The magnetic core includes: inner leg portions arranged inside the inner peripheries of the wound portions; a central leg portion provided between the wound portions; two outer leg portions that are provided outside the outer peripheries of the wound portions and between which the inner leg portions and the central leg portion are provided; and two coupling portions between which the inner leg portions, the central leg portion, and the outer leg portions, which are arranged in parallel, are sandwiched and with which these portions are coupled.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: August 16, 2022
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Kazuhiro Inaba, Xiaoguang Zheng
  • Patent number: 11404198
    Abstract: Provided is a reactor including a coil provided with two winding portions that are obtained by winding a winding wire such that axes of the winding portions are parallel to each other, and a magnetic core including a rectangular parallelepiped inner core portion disposed in each of the winding portions, and outer core portions that are disposed outside the winding portions and are for linking the inner core portions, in which at least one of two outer corner portions out of four corner portions of each of the inner core portions includes a corner chamfering portion that has been chamfered more than an inner corner portion that is opposite the outer corner portion, the four corner portions facing an inner circumferential surface of the winding portion and the two outer corner portions being disposed on the side of each winding portion that is distant from the other winding portion.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: August 2, 2022
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Kazuhiro Inaba, Kouji Nishi, Kouhei Yoshikawa
  • Patent number: 11398338
    Abstract: A reactor includes a coil including wound portions; and a magnetic core that includes a set of core pieces that engage with each other and is arranged inside and outside of the wound portions. One core piece includes, at an end portion thereof, a recessed portion having a ring-shaped opening edge that is open toward the other core piece. The other core piece includes, at an end portion thereof, a protruding portion that is configured to be fit into the recessed portion. Both of the core pieces include, in the wound portions, ring-shaped contact portions that are provided along the opening edges and at which the core pieces come into surface contact with each other, and gap portions formed by non-contact regions in which the inner peripheral surfaces forming the recessed portions and the outer peripheral surfaces of the protruding portions are not in contact with each other.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: July 26, 2022
    Assignees: AutoNetworks Technologies, Ltd., Summitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventor: Kazuhiro Inaba
  • Patent number: 11342105
    Abstract: A coil includes a tubular winding portion formed by winding a wire, wherein the winding portion includes two coil recessed portions that are provided such that recessed directions toward an inner space surrounded by an inner peripheral face of the winding portion are opposite to each other.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: May 24, 2022
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventor: Kazuhiro Inaba
  • Patent number: 11295888
    Abstract: A reactor includes: a coil including a first winding portion and a second winding portion formed by winding a winding wire, such that axes of the winding portions are parallel; and a magnetic core including: a first inner core portion arranged in the first winding portion; a second inner core portion arranged in the second winding portion; and outer core portions that are arranged outside of the winding portions and couple both inner core portions. A specification of a constituent material of the first inner core portion and a specification of a constituent material of the second inner core portion are different, and the second inner core portion is configured such that alternating-current loss of the second inner core portion and the second winding portion is smaller than alternating-current loss of the first inner core portion and the first winding portion.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: April 5, 2022
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Kazuhiro Inaba, Kouji Nishi, Kouhei Yoshikawa
  • Publication number: 20220005642
    Abstract: A reactor is provided with a coil including a pair of winding portions arranged in parallel, a magnetic core to be arranged inside and outside the winding portions, a case for accommodating an assembly including the coil and the magnetic core, a leaf spring fitting for pressing the assembly toward an inner bottom surface of the case, and a sealing resin portion to be filled into the case. Each of the winding portions is so arranged that an arrangement direction of the winding portions is along a depth direction of the case. The case includes an opening having a rectangular planar shape. The leaf spring fitting is arranged in a state curved toward the inner bottom surface by having both end parts of the leaf spring fitting directly pressed against parts of inner wall surfaces of the case facing each other in a long side direction.
    Type: Application
    Filed: November 8, 2019
    Publication date: January 6, 2022
    Inventors: Takehito KOBAYASHI, Kohei YOSHIKAWA, Seiji SHITAMA, Kazuhiro INABA, Naotoshi FURUKAWA
  • Publication number: 20220005641
    Abstract: A reactor includes: a coil including a pair of winding portions arranged in parallel via a coupling portion; a magnetic core including inner core portions arranged inside the winding portions and a pair of outer core portions arranged outside the winding portions; a pair of holding members arranged so as to face end faces of the winding portions; and a molded resin portion covering at least a portion of outer peripheral surfaces of the outer core portions and fills spaces between inner peripheral surfaces of the winding portions and the inner core portions. The coil is a single continuous winding wire, the coupling portion is formed by bending back a portion of the winding wire, and one of the holding members on a side on which the coupling portion is arranged includes a recessed portion housing the coupling portion and an inward projection is arranged inside the coupling portion.
    Type: Application
    Filed: November 27, 2019
    Publication date: January 6, 2022
    Inventors: Seiji Shitama, Akinori Ooishi, Kohei Yoshikawa, Naotoshi Furukawa, Kazuhiro Inaba
  • Publication number: 20210407725
    Abstract: A reactor includes a coil, a magnetic core, and a resin molded portion. The coil includes two winding portions and a linking portion connecting the two winding portions to each other. The magnetic core includes inner core portions disposed inside the winding portions, and outer core portions disposed outside the winding portions. At least one of the two outer core portions includes a composite core. The composite core has a portion protruding upward in the height direction relative to a virtual surface obtained by extending an outer circumferential surface of the inner core portions, and includes a first composite core in which the compact made of the composite material is disposed on an upper side in the height direction, and the powder compact is stacked on a lower side in the height direction. The resin molded portion includes a first outer resin portion covering the first composite core.
    Type: Application
    Filed: October 9, 2019
    Publication date: December 30, 2021
    Inventor: Kazuhiro Inaba
  • Publication number: 20210407724
    Abstract: A reactor including a coil including a first winding portion and a second winding portion arranged parallel to each other, and a magnetic core that forms a ring-shaped closed magnetic circuit, the magnetic core including an inner core portion respectively disposed inside the first winding portion and the second winding portion, and an outer core portion that forms a ring-shaped magnetic circuit with the inner core portions. The outer core portion includes an inner face that faces the coil; and an inward protruding portion provided on the inner face and protruding toward a space between the first winding portion and the second winding portion.
    Type: Application
    Filed: October 4, 2019
    Publication date: December 30, 2021
    Inventor: Kazuhiro Inaba
  • Publication number: 20210407723
    Abstract: A reactor includes an assembly formed by assembling a coil and a magnetic core, a case for accommodating the assembly inside, a grip member for sandwiching the assembly from the bottom plate portion side and the opening side inside the case, and a screw member for fixing the grip member to the bottom plate portion by penetrating into the case from outside of the bottom plate portion. The grip member includes a first piece to be held in contact with a surface of the assembly on the opening side, a second piece to be held in contact with a surface of the assembly on the bottom plate portion side, and a third piece connecting the first piece and the second piece in a depth direction of the case.
    Type: Application
    Filed: November 8, 2019
    Publication date: December 30, 2021
    Inventors: Takehito KOBAYASHI, Kohei YOSHIKAWA, Takashi MISAKI, Seiji SHITAMA, Kazuhiro INABA, Naotoshi FURUKAWA
  • Publication number: 20210391115
    Abstract: A reactor includes a coil having a wound portion and a magnetic core. The magnetic core includes a first core piece having a molded body of a composite material and a non-magnetic member, the molded body of the composite material contains a magnetic powder and a resin, the non-magnetic member is held by the molded body of the composite material such that the non-magnetic member and the molded body constitute a single piece, the non-magnetic member includes a base portion arranged along an outer peripheral surface of the molded body of the composite material and a protruding piece protruding from the base portion. The protruding piece is inserted into a region of the molded body of the composite material arranged inside of the wound portion so as to intersect an axial direction of the first core piece.
    Type: Application
    Filed: September 27, 2019
    Publication date: December 16, 2021
    Inventor: Kazuhiro Inaba
  • Publication number: 20210391114
    Abstract: A reactor including a coil and a magnetic core, the magnetic core including a first inner core portion, a second inner core portion, a first outer core portion, and a second outer core portion. The reactor includes an inner resin portion and an outer resin portion, and the first outer core portion includes a first inner face that faces the coil, a first outer face on the opposite side to the first inner face, and an outward protruding portion protruding from the first outer face. When viewed from the first outer face side, the outer circumferential contour line of the outward protruding portion is located inside the outer circumferential contour line of the first outer face, and the end face of the outward protruding portion is exposed from the outer resin portion and is flush with the surface of the outer resin portion.
    Type: Application
    Filed: October 4, 2019
    Publication date: December 16, 2021
    Inventor: Kazuhiro Inaba
  • Publication number: 20210383962
    Abstract: A reactor includes an assembly of a coil and a magnetic core; a case; and a sealing resin portion filling the case and sealing at least a portion of the assembly. The case has an inner bottom surface, and a pair of coil facing surfaces that face side surfaces of the coil. The pair of coil facing surfaces have inclined surfaces that incline away from each other in a direction from the inner bottom surface side to an opposite side to the inner bottom surface. The coil includes a first winding portion disposed on the inner bottom surface side, and a second winding portion disposed opposite of the inner bottom surface with respect to the first winding portion. The first winding portion and the second winding portion are in a vertical arrangement and are parallel with each other. The second winding portion is wider than the first winding portion.
    Type: Application
    Filed: October 9, 2019
    Publication date: December 9, 2021
    Inventor: Kazuhiro Inaba
  • Publication number: 20210358671
    Abstract: A reactor includes an assembly of a coil and a magnetic core; a case that houses the assembly; and a sealing resin portion that seals a portion of the assembly. The reactor further includes a heat dissipation member interposed between the coil and the case. The case has an inner bottom surface and the pair of coil facing surfaces have inclined surfaces that are inclined away from each other. The coil includes a first winding portion and a second winding portion disposed opposite of the inner bottom surface with respect to the first winding portion. The first winding portion and the second winding portion are parallel with each other, and have the same width. The heat dissipation member includes a first heat dissipation portion interposed between at least one of the inclined surfaces and the second winding portion.
    Type: Application
    Filed: October 9, 2019
    Publication date: November 18, 2021
    Inventor: Kazuhiro Inaba
  • Publication number: 20210350968
    Abstract: A reactor includes a coil that includes a wound portion and a magnetic core that is arranged inside of the wound portion and outside of the wound portion, wherein the magnetic core is formed by combining a plurality of core pieces, at least one core piece of the plurality of core pieces is a first core piece constituted by a molded body of a composite material containing a magnetic powder and a resin, the first core piece includes a slit portion in a region arranged inside of the wound portion, a depth direction of the slit portion extends along a direction that intersects an axial direction of the first core piece, and the slit portion is provided so as to be open in an outer peripheral surface of the first core piece on one side of the depth direction and be closed on the other side.
    Type: Application
    Filed: September 30, 2019
    Publication date: November 11, 2021
    Inventor: Kazuhiro Inaba
  • Patent number: 11158452
    Abstract: Provided is a reactor including: an assembly that has a coil that has a pair of winding portions that are arranged side by side, and a magnetic core; a base member that has a mount plate on which the assembly is mounted; and a sensor assembly that has a sensor main body that detects a physical value related to the reactor, and a wiring portion extending from the sensor main body. The reactor includes a wire catch member provided on the assembly or the base member, the wire catch member allowing a part of the wiring portion to be arranged thereon, and a cable tie for fixing the wiring portion to the wire catch member.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: October 26, 2021
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Kazuhiro Inaba