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: 11536367
    Abstract: A seal structure that includes: a grommet with a cylindrical shape that is installed in an attachment panel, the grommet including an opposing surface facing an attachment surface of the attachment panel; and a bracket that presses the opposing surface of the grommet against the attachment surface of the attachment panel.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: December 27, 2022
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Hirokazu Nakai, Keigo Matsushima
  • Patent number: 11437741
    Abstract: A complex terminal with a fastening structure for collectively fastening ends of a plurality of electric wires to a fastening target, the complex structure including: a plurality of couplers to which the ends of the plurality of electric wires are to be respectively coupled; a plurality of extensions respectively extending from the plurality of couplers; and a joint that is provided at a portion where end edges or side edges of the plurality of extensions are abutted against each other, and is formed by friction stir welding, wherein a fastening hole formed by a tool used in the friction stir welding is provided passing through the joint.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: September 6, 2022
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu Nakai
  • Patent number: 11414029
    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: Grant
    Filed: January 16, 2018
    Date of Patent: August 16, 2022
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Masashi Hayashi, Ryo Kuroishi, Hirokazu Nakai
  • Patent number: 11400875
    Abstract: A holder configured to be fitted to a tube that is made of metal and through which a wire is to be inserted, the holder including: a tubular main body that includes a first end and a second end opposite to the first end, and is configured to be inserted into the tube; and a cover formed protruding radially outward from an outer circumferential surface of the main body at the first end, wherein: the cover is formed only in a portion of the main body in a circumferential direction, and the cover includes a wall that protrudes radially outward from the outer circumferential surface of the main body, and a guard that extends from a radially outward end of the wall toward the second end of the main body.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: August 2, 2022
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu Nakai
  • Patent number: 11338745
    Abstract: A holder including a tubular main body that includes a pair of split bodies, and a hinge that couples the pair of split bodies so that the pair of split bodies can be opened and closed, the tubular main body being configured to be inserted into the tube; and a pair of projections that each have a press surface to be pressed against by an ejector pin, and are respectively formed protruding radially outward from outer circumferential surfaces of the pair of split bodies, wherein the pair of projections are formed so that when the pair of split bodies are opened with the hinge used as a pivot point, the pair of projections come into contact with each other before the outer circumferential surfaces of the pair of split bodies come into contact with each other.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: May 24, 2022
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu Nakai
  • Patent number: 11279301
    Abstract: A wire harness, wherein: the holder surrounds the electric wire and is inserted into the end of the pipe, a groove extending along a circumferential direction of the holder and facing an inner circumferential surface of the pipe is provided on an outer circumferential surface of the holder, and the end of the pipe is crimped and the holder is flexurally deformed, whereby the inner circumferential surface of the pipe and the outer circumferential surface of the holder are brought into intimate contact with each other, and an inner circumferential surface of the holder and an outer circumferential surface of the electric wire are brought into intimate contact with each other, a crimped portion of the end of the pipe being reduced in diameter inward in a radial direction of the pipe and being engaged with the groove of the holder.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: March 22, 2022
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu Nakai
  • Patent number: 11273774
    Abstract: A wire harness, including: a first wire including a first core wire and a second wire including a second core wire, the first core wire and the second core wire being joined together, wherein the first core wire includes a first flat surface extending along an entire length of the first core wire in a length direction, the second core wire includes a second flat surface extending along an entire length of the second core wire in a length direction, and the first flat surface and the second flat surface are overlapped and joined.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: March 15, 2022
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu Nakai
  • Publication number: 20220049770
    Abstract: A seal structure that includes: a grommet with a cylindrical shape that is installed in an attachment panel, the grommet including an opposing surface facing an attachment surface of the attachment panel; and a bracket that presses the opposing surface of the grommet against the attachment surface of the attachment panel.
    Type: Application
    Filed: August 20, 2019
    Publication date: February 17, 2022
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Hirokazu NAKAI, Keigo MATSUSHIMA
  • Patent number: 11217362
    Abstract: A wire harness, including: a plurality of wire groups that each include a plurality of wires; a plurality of tubular first flexible shields that each encase a different one wire group of the plurality of wire groups; a tube that is made of a metal and into which drawn-out portions of the wires, which are drawn out from the first flexible shields, are inserted; and a tubular second flexible shield that bunches together and encases the drawn-out portions of the wires at positions thereof that are outside of the tube, and is electrically connected to the first flexible shields and the tube.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: January 4, 2022
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Yuya Hiromori, Hirokazu Nakai
  • Publication number: 20210331632
    Abstract: A holder including a tubular main body that includes a pair of split bodies, and a hinge that couples the pair of split bodies so that the pair of split bodies can be opened and closed, the tubular main body being configured to be inserted into the tube; and a pair of projections that each have a press surface to be pressed against by an ejector pin, and are respectively formed protruding radially outward from outer circumferential surfaces of the pair of split bodies, wherein the pair of projections are formed so that when the pair of split bodies are opened with the hinge used as a pivot point, the pair of projections come into contact with each other before the outer circumferential surfaces of the pair of split bodies come into contact with each other.
    Type: Application
    Filed: August 15, 2019
    Publication date: October 28, 2021
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu NAKAI
  • Patent number: 11139591
    Abstract: A conductive member includes (i) a conductive pipe and (ii) a conductor that is inserted into the pipe and is brought into electro-conductive contact with an inner surface of the pipe. The pipe is provided with a stopper section that abuts against and stops the conductor and thereby regulates an insertion amount of the conductor. The conductor includes an insulation coating surrounding a conductor section, the conductor section is exposed at an end portion, and an end of the insulation coating forms a step with respect to the conductor section and creates a stopped section that abuts against and is stopped by the stopper section.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: October 5, 2021
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu Nakai
  • Publication number: 20210291757
    Abstract: A wire harness, wherein: the holder surrounds the electric wire and is inserted into the end of the pipe, a groove extending along a circumferential direction of the holder and facing an inner circumferential surface of the pipe is provided on an outer circumferential surface of the holder, and the end of the pipe is crimped and the holder is flexurally deformed, whereby the inner circumferential surface of the pipe and the outer circumferential surface of the holder are brought into intimate contact with each other, and an inner circumferential surface of the holder and an outer circumferential surface of the electric wire are brought into intimate contact with each other, a crimped portion of the end of the pipe being reduced in diameter inward in a radial direction of the pipe and being engaged with the groove of the holder.
    Type: Application
    Filed: April 25, 2019
    Publication date: September 23, 2021
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu NAKAI
  • Patent number: 11121483
    Abstract: A terminal holder for accommodating a plurality of terminal fittings that are attached to respective ends of a plurality of electrical wires, each of the plurality of terminal fittings including a connection that is connected and fixed to an attachment object through a bolt inserted in the connection, and a fixing portion that is fixed to the electrical wire, the terminal holder including: a plurality of through holes in which the connections of the plurality of terminal fittings are to be respectively disposed and that expose the connections; a plurality of accommodations for respectively accommodating the fixing portions of the plurality of terminal fittings; and a partition wall continuously extending between the fixing portions and between the connections of adjacent terminal fittings.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: September 14, 2021
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Hirokazu Nakai, Toshimitsu Nakamura
  • Publication number: 20210245685
    Abstract: A wire harness, including: a first wire including a first core wire and a second wire including a second core wire, the first core wire and the second core wire being joined together, wherein the first core wire includes a first flat surface extending along an entire length of the first core wire in a length direction, the second core wire includes a second flat surface extending along an entire length of the second core wire in a length direction, and the first flat surface and the second flat surface are overlapped and joined.
    Type: Application
    Filed: June 18, 2019
    Publication date: August 12, 2021
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu NAKAI
  • Publication number: 20210203089
    Abstract: A complex terminal with a fastening structure for collectively fastening ends of a plurality of electric wires to a fastening target, the complex structure including: a plurality of couplers to which the ends of the plurality of electric wires are to be respectively coupled; a plurality of extensions respectively extending from the plurality of couplers; and a joint that is provided at a portion where end edges or side edges of the plurality of extensions are abutted against each other, and is formed by friction stir welding, wherein a fastening hole formed by a tool used in the friction stir welding is provided passing through the joint.
    Type: Application
    Filed: May 17, 2019
    Publication date: July 1, 2021
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu NAKAI
  • Patent number: 11050170
    Abstract: A pipe conductor is formed by a conductive tubular body. The pipe conductor includes a connection for connecting with another conductor. The connection is formed by crushing an end of the conductive tubular body in an axial direction. A flat surface is formed on a first surface of the connection, and a surface having a groove is formed on a second surface of the connection. The groove reaches a tip end of the connection, and an end of the another conductor is in contact with only the flat surface.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: June 29, 2021
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Ryo Fujioka, Hirokazu Nakai
  • Publication number: 20210178994
    Abstract: A holder configured to be fitted to a tube that is made of metal and through which a wire is to be inserted, the holder including: a tubular main body that includes a first end and a second end opposite to the first end, and is configured to be inserted into the tube; and a cover formed protruding radially outward from an outer circumferential surface of the main body at the first end, wherein: the cover is formed only in a portion of the main body in a circumferential direction, and the cover includes a wall that protrudes radially outward from the outer circumferential surface of the main body, and a guard that extends from a radially outward end of the wall toward the second end of the main body.
    Type: Application
    Filed: August 15, 2019
    Publication date: June 17, 2021
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu NAKAI
  • Publication number: 20210159612
    Abstract: A terminal joining structure including: a first member that is made of a metal material and has a connection to be connected to an electric wire; a second member that is made of a metal material; and an abutment where an end edge or a side edge of the first member and an end edge or a side edge of the second member abut against each other, wherein the abutment is provided with a joint formed through solid-state joining.
    Type: Application
    Filed: May 21, 2019
    Publication date: May 27, 2021
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu NAKAI
  • Publication number: 20210104823
    Abstract: A conductive member includes (i) a conductive pipe and (ii) a conductor that is inserted into the pipe and is brought into electro-conductive contact with an inner surface of the pipe. The pipe is provided with a stopper section that abuts against and stops the conductor and thereby regulates an insertion amount of the conductor. The conductor includes an insulation coating surrounding a conductor section, the conductor section is exposed at an end portion, and an end of the insulation coating forms a step with respect to the conductor section and creates a stopped section that abuts against and is stopped by the stopper section.
    Type: Application
    Filed: March 26, 2018
    Publication date: April 8, 2021
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu NAKAI
  • Patent number: 10965113
    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: Grant
    Filed: March 22, 2018
    Date of Patent: March 30, 2021
    Assignee: Sumitomo Wiring Systems, LTD.
    Inventor: Hirokazu Nakai