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).

  • Publication number: 20190135205
    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: Application
    Filed: June 5, 2017
    Publication date: May 9, 2019
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu NAKAI
  • Publication number: 20190126861
    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: Application
    Filed: April 3, 2017
    Publication date: May 2, 2019
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu NAKAI
  • Publication number: 20190092255
    Abstract: A wire harness where the hard conductor portion is arranged inside of the hard outer covering portion and the hard outer covering portion and the hard conductor portion are bent together to form a bent portion, the conductor is formed by twisting together a plurality of strands, and includes a single core that is formed by the strands coming into close contact with each other and being integrated due to pressure being applied to a predetermined part of the conductor, and a twisted wire that is not pressed and is left in a state in which the plurality of strands are twisted together, the single core forms the hard conductor portion, a level difference is formed on a boundary between the single core and the twisted wire, and a positioner for positioning the level difference is provided on an inner circumferential surface of the outer covering.
    Type: Application
    Filed: April 3, 2017
    Publication date: March 28, 2019
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hirokazu NAKAI
  • Patent number: 10217542
    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: April 21, 2016
    Date of Patent: February 26, 2019
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Takao Kushima, Hirokazu Nakai
  • Publication number: 20190023199
    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: Application
    Filed: June 6, 2018
    Publication date: January 24, 2019
    Inventor: Hirokazu Nakai
  • Patent number: 10177552
    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: April 24, 2017
    Date of Patent: January 8, 2019
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Hirokazu Nakai, Tomohiro Yabashi, Masashi Hayashi
  • Patent number: 10141727
    Abstract: A wire harness with a fixing member that is provided can prevent a fixing member from becoming shifted a large amount in the axial direction of a pipe, and enables adjustment of the position of the fixing member. The wire harness includes: a pipe (P) into which electrical wires (W) are inserted; an exterior member that has a bellows portion and surrounds the outer side of at least a portion of the pipe (P) in the axial direction, the bellows portion having mountain portions and valley portions that are successively formed in an alternating manner in the axial direction; and a fixing member that has locking portions, is attached to the exterior member, and is to be fixed to a fixing portion (B). The locking portions are locked to the bellows portion.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: November 27, 2018
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Masashi Fujiki, Hirokazu Nakai
  • Patent number: 10128027
    Abstract: There is provided an electric wire holder for holding electric wires connected to terminal fittings at end portions of the wires, the holder configured to attach to a shielding pipe to cover an edge of the shielding pipe into which the electric wires are inserted and from which the terminal fittings and a portion of the electric wires are drawn out to an outside of the shielding pipe, the holder comprising: a first holding piece configured to hold the portion of the electric wires that is drawn out from the shielding pipe and to fix a draw-out position of the terminal fittings.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: November 13, 2018
    Assignee: SUMITOMO WIRING SYSTEMS, Ltd.
    Inventors: Hirokazu Nakai, Masashi Fujiki, Hiroyuki Yoshikawa
  • Patent number: 10118573
    Abstract: A conductive member to be routed in a vehicle includes a pipe member being tubular in shape and capable of keeping a shape, a core wire connected to an end portion of the pipe member and having flexibility, a connector terminal connected to an end portion of the core wire on a side that is opposite to the pipe member, and a corrugated tube covering the pipe member and the core wire and having flexibility.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: November 6, 2018
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Hirokazu Nakai
  • Publication number: 20180191144
    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: Application
    Filed: January 24, 2018
    Publication date: July 5, 2018
    Inventors: Ryo KUROISHI, Hirokazu NAKAI
  • Publication number: 20180131167
    Abstract: A single-core wire that is to be connected to a core wire of a coated electrical wire in which the core wire obtained by combining a plurality of element wires is coated with an insulating coating, including: a main portion in the shape of a solid bar extending in an axial direction; and an electrical wire fixing portion constituting part of the main portion, and having an inner wall arranged around an outer circumference of the core wire before the core wire is fixed and formed so as to be continuous, in which the core wire is fixed in a state of being surrounded by the inner wall.
    Type: Application
    Filed: March 28, 2016
    Publication date: May 10, 2018
    Applicant: Sumitomo Wiring Systems, Ltd.
    Inventor: Hirokazu NAKAI
  • Patent number: 9966166
    Abstract: An electric wire and a shielding member configured to electrically shield the electric wire by enclosing an outer circumference thereof. A core wire of the electric wire has a single-core portion which is formed by applying pressure to a portion of a conductor obtained by twisting a plurality of strands together to reduce their cross section. This causes the strands to be brought into intimate contact with each other and form a single body, and a stranded wire portion in which the strands remain in a twisted-together state with no pressure having been applied thereto. The shielding member has a first shielding portion enclosing a portion of the electric wire where the core wire constitutes the single-core portion, and a second shielding portion enclosing a portion of the electric wire where the core wire constitutes the stranded wire portion. The second shielding portion has higher flexibility than the first shielding portion.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: May 8, 2018
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Hirokazu Nakai
  • Publication number: 20180122532
    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: April 21, 2016
    Publication date: May 3, 2018
    Inventors: Takao KUSHIMA, Hirokazu NAKAI
  • Publication number: 20180102203
    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: Application
    Filed: September 22, 2017
    Publication date: April 12, 2018
    Inventors: Hirokazu NAKAI, Ryo KUROISHI
  • Publication number: 20180079374
    Abstract: A routing space for a wire harness is reduced in size and includes a body panel BP in which an attachment hole having an oval shape is formed; and a grommet that is formed using a rubber material. The grommet includes: a tube portion that is formed into a cylinder into which a wire harness WH can be inserted and passes through the attachment hole in an orientation of being inclined with respect to the body panel BP; and a body seal portion that is formed so as to protrude from an outer circumferential surface of the tube portion and conform to the body panel BP, and comes into contact watertightly with the vehicle body.
    Type: Application
    Filed: July 31, 2017
    Publication date: March 22, 2018
    Inventors: Hirokazu NAKAI, Yuki OOHIRA
  • Publication number: 20180076572
    Abstract: Drain portions are formed by extracting portions of braided members of shield wires to the outside, one of the drain portions is used as a main drain portion, and a ground terminal to be connected to a ground point is attached to the leading end thereof. End portions on one side of relay wires are respectively connected to the remaining drain portions, and the other end portions of the relay wires are collectively connected to the ground terminal.
    Type: Application
    Filed: August 1, 2017
    Publication date: March 15, 2018
    Inventors: Hirokazu NAKAI, Yuki OOHIRA
  • Publication number: 20180072247
    Abstract: A conductive member to be routed in a vehicle includes a pipe member being tubular in shape and capable of keeping a shape, a core wire connected to an end portion of the pipe member and having flexibility, a connector terminal connected to an end portion of the core wire on a side that is opposite to the pipe member, and a corrugated tube covering the pipe member and the core wire and having flexibility.
    Type: Application
    Filed: April 26, 2016
    Publication date: March 15, 2018
    Inventor: Hirokazu NAKAI
  • Patent number: 9912132
    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: December 20, 2016
    Date of Patent: March 6, 2018
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Ryo Kuroishi, Hirokazu Nakai
  • Patent number: 9871360
    Abstract: It is aimed to enable the use of existing components even if the size of an exterior material is changed. A wire protecting member disclosed by this specification is a wire protecting member for accommodating and protecting wires to be routed in a vehicle inside and includes a corrugated tube having wires inserted therein, a clamp including an inserting portion having an inner diameter larger than an inner diameter in the case of inserting the corrugated tube therethrough without any clearance and configured to fix the corrugated tube to a vehicle, and an auxiliary clamp interposed between the corrugated tube and the inserting portion and configured to fix the corrugated tube to the inserting portion.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: January 16, 2018
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Hirokazu Nakai
  • Patent number: 9809180
    Abstract: An electric wire sheathing member including a resin pipe with which springback can be suppressed, and a wire harness are provided. The electric wire sheathing member includes a resin pipe that has a tubular shape into which an electric wire can be inserted and that is bent into a predetermined shape, and a metal body that is integrally provided in at least a bent portion of the resin pipe and continuously extends in the axial direction. With this configuration, the rigidity of a bent portion of the resin pipe is increased by the metal body, thus making it possible to suppress the springback of the resin pipe.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: November 7, 2017
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Ryo Kuroishi, Hirokazu Nakai