Patents by Inventor Hirokazu NAKAI

Hirokazu NAKAI 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: 10600530
    Abstract: A conductive member disclosed herein is a conductive member that is routed from the front to the rear of a vehicle, and includes: a shape-retaining tubular pipe member made of a metal having excellent conductivity; a braided wire having flexibility and configured to be crimped to be connected to a crimped connection portion provided at front and rear ends of the pipe member; a round terminal configured to be crimped and connected to the braided wire; and a heat-shrinkable tube that covers from a crimped portion of the round terminal at the front end to a crimped portion of the round terminal at the rear end.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: March 24, 2020
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Takao Kushima, Hirokazu Nakai
  • Patent number: 10596983
    Abstract: Provided is a wire harness capable of maintaining a predetermined bent shape. The wire harness has a conductor, an outer member that encloses the conductor, a rigid conductor portion that is included in the conductor and that has rigidity and is capable of retaining a bent shape, and a rigid outer portion that is included in the outer member and that has rigidity and is capable of retaining a bent shape, with the rigid conductor portion being arranged on the inner side of the rigid outer portion, and a bent portion being formed by the rigid outer portion and the rigid conductor portion together having undergone a bending process.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: March 24, 2020
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu Nakai
  • Publication number: 20200083695
    Abstract: A wire harness, in which a connection portion between a shape retaining conductor and a flexible conductor can be protected, includes a flexible conductor that is flexibly bendable, a shape retaining conductor that retains its shape, and a protective member that surrounds a connection portion between the flexible conductor and the shape retaining conductor and linearly holds the connection portion, and one end portion of the protective member is fixed to an end portion of the shape retaining conductor.
    Type: Application
    Filed: March 22, 2018
    Publication date: March 12, 2020
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu NAKAI
  • Publication number: 20200067292
    Abstract: An exterior structure for a wire harness is provided with a pipe that has an electric wire insertion space that allows an electric wire to be inserted through the inside of the pipe. The pipe includes a diameter reduction portion that is defined by an inward deformation of the pipe in a diameter direction that narrows the electric wire insertion space. In the diameter reduction portion, the clearance between (i) the electric wire that is inserted through the electric wire insertion space of the pipe and (ii) the inner circumferential surface of the pipe can be reduced or eliminated, which suppresses rattling of the electric wire.
    Type: Application
    Filed: October 29, 2019
    Publication date: February 27, 2020
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu NAKAI
  • Patent number: 10532706
    Abstract: An object of the description is to provide a conductive wire with a small diameter. A conductive wire configured to be arranged in a vehicle and electrically connect electrical devices includes: a rigid wire having a first core wire, and a first insulating coating that covers an outer circumference of the first core wire; and a flexible wire having a second core wire that is superior to the first core wire in terms of flexibility and is connected to an end of the first core wire, and a second insulating coating that covers an outer circumference of the second core wire. A wall thickness T1 in a radial direction of the first insulating coating of the rigid wire is smaller than a wall thickness T2 in a radial direction of the second insulating coating of the flexible wire.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: January 14, 2020
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Hirokazu Nakai
  • Publication number: 20190389402
    Abstract: A wire harness that includes a cylindrical connector shell; a cylindrical flexible conductor; a fixing member for fixing the flexible conductor to an end of the connector shell; and a cover that covers the connector shell and the flexible conductor, wherein: the cover is fixed through fastening to the connector shell by a fixing band that is arranged on an outer circumferential surface of a leading end of the cover, and the cover includes: a connector fastener that is fastened to the connector shell by the fixing band; a covering that covers the fixing member; and a rib that protrudes inward between the connector fastener and the covering.
    Type: Application
    Filed: January 16, 2018
    Publication date: December 26, 2019
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Masashi HAYASHI, Ryo KUROISHI, Hirokazu NAKAI
  • Patent number: 10501029
    Abstract: A wire harness that can be arranged in a vehicle, the wire harness including: a cylindrical conductor whose first end is electrically connected to a first flexible conductor that is flexible; and a tubular conductor that is electrically connected to the cylindrical conductor in a state in which a second end of the cylindrical conductor is fitted into an opening at a first end of the tubular conductor.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: December 10, 2019
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Hirokazu Nakai
  • Patent number: 10486625
    Abstract: A grommet that has a tubular shape capable of enveloping a wire harness and is arranged at a middle in a length direction of the wire harness, the grommet including: a main body whose one end in an axial direction is connected to an end of one external member configured to envelope the wire harness and another end is connected to an end of another external member that is different from the one external member; and a housing that is provided in the main body and is capable of housing a magnetic core between the end of the one external member and the end of the other external member.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: November 26, 2019
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu Nakai
  • Publication number: 20190351850
    Abstract: A grommet that has a tubular shape capable of enveloping a wire harness and is arranged at a middle in a length direction of the wire harness, the grommet including: a main body whose one end in an axial direction is connected to an end of one external member configured to envelope the wire harness and another end is connected to an end of another external member that is different from the one external member; and a housing that is provided in the main body and is capable of housing a magnetic core between the end of the one external member and the end of the other external member.
    Type: Application
    Filed: July 30, 2019
    Publication date: November 21, 2019
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu NAKAI
  • Publication number: 20190337473
    Abstract: A wire harness that includes a braid composed of conductive strands; a cylindrical conductor that is electrically connected to the braid and can be attached to an attachment target; and an electrical wire inserted into the braid and the cylindrical conductor, wherein the cylindrical conductor includes a rotation restriction that restricts rotation of the cylindrical conductor with respect to the attachment target by engaging with the attachment target in a circumferential direction of the cylindrical conductor, and the rotation restriction also restricts the cylindrical conductor from moving in an axial direction of the cylindrical conductor by engaging with the attachment target in the axial direction.
    Type: Application
    Filed: January 19, 2018
    Publication date: November 7, 2019
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Hirokazu NAKAI, Tomohiro YABASHI
  • Publication number: 20190337472
    Abstract: A wire harness that can be arranged in a vehicle, the wire harness including: a cylindrical conductor whose first end is electrically connected to a first flexible conductor that is flexible; and a tubular conductor that is electrically connected to the cylindrical conductor in a state in which a second end of the cylindrical conductor is fitted into an opening at a first end of the tubular conductor.
    Type: Application
    Filed: December 27, 2017
    Publication date: November 7, 2019
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu NAKAI
  • Patent number: 10468862
    Abstract: An exterior structure for a wire harness is provided with a pipe that has an electric wire insertion space that allows an electric wire to be inserted through the inside of the pipe. The pipe includes a diameter reduction portion that is defined by an inward deformation of the pipe in a diameter direction that narrows the electric wire insertion space. In the diameter reduction portion, the clearance between (i) the electric wire that is inserted through the electric wire insertion space of the pipe and (ii) the inner circumferential surface of the pipe can be reduced or eliminated, which suppresses rattling of the electric wire.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: November 5, 2019
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu Nakai
  • Publication number: 20190326741
    Abstract: To achieve high waterproofness, a grommet that is attached so as to cover a shield pipe and a corrugated tube so as to bridge therebetween includes a pipe-side end portion that is formed in a tubular shape capable of being sealingly connected to an outer circumferential side of the pipe, and a corrugated-side end portion that is formed in a tubular shape capable of being sealingly connected to an outer circumferential side of the corrugated tube. A plurality of sealing lips that closely contact to an outer surface of the shield pipe are formed on an inner surface of the pipe-side end portion. The sealing lips are disposed inside and outside a width region W that is fastened by a fastening band disposed on an outer surface of the pipe-side end portion.
    Type: Application
    Filed: July 5, 2019
    Publication date: October 24, 2019
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Hirokazu NAKAI, Tomohiro YABASHI, Masashi HAYASHI
  • Patent number: 10424906
    Abstract: To achieve high waterproofness, a grommet that is attached so as to cover a shield pipe and a corrugated tube so as to bridge therebetween includes a pipe-side end portion that is formed in a tubular shape capable of being sealingly connected to an outer circumferential side of the pipe, and a corrugated-side end portion that is formed in a tubular shape capable of being sealingly connected to an outer circumferential side of the corrugated tube. A plurality of sealing lips that closely contact to an outer surface of the shield pipe are formed on an inner surface of the pipe-side end portion. The sealing lips are disposed inside and outside a width region W that is fastened by a fastening band disposed on an outer surface of the pipe-side end portion.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: September 24, 2019
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Hirokazu Nakai, Tomohiro Yabashi, Masashi Hayashi
  • Patent number: 10407002
    Abstract: A grommet that includes a main body configured to fit into a through hole in a wall and come into contact with a circumferential edge of the through hole; and a reinforcement provided in a through space in the main body and configured to suppress inward distortion of the main body, the through space being open in a same direction as a penetrating direction of the through hole.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: September 10, 2019
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu Nakai
  • Patent number: 10389101
    Abstract: To achieve high waterproofness, a grommet that is attached so as to cover a shield pipe and a corrugated tube so as to bridge therebetween includes a pipe-side end portion that is formed in a tubular shape capable of being sealingly connected to an outer circumferential side of the pipe, and a corrugated-side end portion that is formed in a tubular shape capable of being sealingly connected to an outer circumferential side of the corrugated tube. A plurality of sealing lips that closely contact to an outer surface of the shield pipe are formed on an inner surface of the pipe-side end portion. The sealing lips are disposed inside and outside a width region W that is fastened by a fastening band disposed on an outer surface of the pipe-side end portion.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: August 20, 2019
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Hirokazu Nakai, Tomohiro Yabashi, Masashi Hayashi
  • Patent number: 10373736
    Abstract: A single-core cable is protected over a long region by a pipe. A conductive path includes: a single-core cable in which end portions of a single-core wire are exposed; a first stranded cable in which an end portion of a first stranded wire that is exposed is coaxially fixed to the one end portion of the single-core wire; a second stranded cable in which an end portion of a second stranded wire that is exposed is coaxially fixed to the other end portion of the single-core wire; and a pipe that has an inner diameter dimension capable of surrounding the single-core cable and the first stranded cable, and is axially displaceable between a protective position at which only the single-core cable is surrounded, and an exposed position at which the one end portion of the single-core wire and the first stranded cable are surrounded, and the other end portion of the single-core wire is exposed.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: August 6, 2019
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Hirokazu Nakai, Ryo Kuroishi
  • Patent number: 10320165
    Abstract: A shielded conduction path that makes it possible to reduce the diameter of a portion where a braided wire is fixed to a pipe. The shielded conduction path includes a pipe that has a shielding function, reduced diameter portions that are formed in the outer circumference of the pipe, braided wires that have a shielding function and are arranged such that the base end portions thereof envelop the outer circumference of the reduced diameter portions, crimp rings that are arranged so as to envelop the outer circumference of the base end portions of the braided wires and fix the braided wires to the reduced diameter portions, and a conduction path main body that is inserted into the pipe and into the braided wires.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: June 11, 2019
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Ryo Kuroishi, Hirokazu Nakai
  • Publication number: 20190157775
    Abstract: A conductor connecting structure and a wire harness are able to improve connection reliability. An end portion of a first conductor and an end portion of a second conductor overlap each other in a radial direction, and a tubular member encloses, and is crimped onto, an overlapping portion where the first conductor and the second conductor overlap each other. With this configuration, it is possible to make a joint strong enough to resist a force applied in a direction in which the end portion of the first conductor and the end portion of the second conductor are detached from each other, and therefore it is possible to improve the reliability of connection between the first conductor and the second conductor.
    Type: Application
    Filed: April 3, 2017
    Publication date: May 23, 2019
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu NAKAI
  • Publication number: 20190148033
    Abstract: A conductive member disclosed herein is a conductive member that is routed from the front to the rear of a vehicle, and includes: a shape-retaining tubular pipe member made of a metal having excellent conductivity; a braided wire having flexibility and configured to be crimped to be connected to a crimped connection portion provided at front and rear ends of the pipe member; a round terminal configured to be crimped and connected to the braided wire; and a heat-shrinkable tube that covers from a crimped portion of the round terminal at the front end to a crimped portion of the round terminal at the rear end.
    Type: Application
    Filed: January 16, 2019
    Publication date: May 16, 2019
    Inventors: Takao KUSHIMA, Hirokazu NAKAI