Patents by Inventor Yukihiro Kawamura

Yukihiro Kawamura 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: 20150079857
    Abstract: There is provided a pressure-bonding connection structural body and a female connector which can surely prevent the intrusion of moisture from an insulating cover side, and a method of manufacturing the connection structural body. In the connection structural body which is configured by connecting a crimp terminal and an insulated wire to each other, the crimp terminal having a barrel portion which is an integral body formed of; a cover pressure-bonding section which pressure-bonds by caulking the insulating cover; and a core wire pressure-bonding section which pressure-bonds an aluminum core wire by caulking, a water blocking projecting portion which prevents the intrusion of moisture in a longitudinal direction in a pressure-bonding state is formed, at the time of pressure-bonding the barrel portion, on an inner surface of the cover pressure-bonding section of the barrel portion where a cross-sectional shape in a width direction is formed into a closed cross-sectional shape.
    Type: Application
    Filed: November 25, 2014
    Publication date: March 19, 2015
    Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS, INC.
    Inventors: Yukihiro KAWAMURA, Takashi TONOIKE, Satoshi TAKAMURA
  • Publication number: 20150072573
    Abstract: A crimp terminal (10) comprises a box part (20) and a cable connector (30). The box part (20) is connected to another terminal. The cable connector (30) is coupled with the box terminal (20) and connected with a covered cable (50). Also, the cable connector (30) includes a hollow formed by welding a metal plate, in which a pressing part for conduction (33b) and a compression part for waterproofing (33a) are formed. The pressing part for conduction (33b) presses a conduction part (51) of the covered cable (50) to ensure conduction with the covered cable. The compression for waterproofing (33a) presses and compresses a covered part (52) of the covered cable (50) inwardly to prevent water from entering inside.
    Type: Application
    Filed: September 9, 2014
    Publication date: March 12, 2015
    Inventors: Yukihiro KAWAMURA, Takashi TONOIKE, Hiroshi ORITO, Yasushi KIHARA, Takuro YAMADA, Masakazu KOZAWA
  • Patent number: 8974258
    Abstract: A crimp terminal includes barrel pieces respectively on both of two sides in a width direction thereof. The barrel pieces are included in a pressure-bonding section for pressure-bonding an exposed part of an electric wire conductor of an insulated wire. The insulated wire includes the electric wire conductor and an insulating cover for covering an outer circumference of the electric wire conductor, and the exposed part is a part of the electric wire conductor which is exposed from a tip of the cover by a predetermined length. The barrel pieces have a length in a longitudinal direction which is longer than the length of the exposed part of the electric wire conductor. The pressure-bonding section pressure-bonds, by the barrel pieces, a continuous part from a tip of the electric wire conductor to a position rear to the tip of the cover.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: March 10, 2015
    Assignees: Furukawa Electric Co., Ltd., Furukawa Automotive Systems Inc.
    Inventors: Kengo Mitose, Yasushi Kihara, Yukihiro Kawamura
  • Publication number: 20150064991
    Abstract: A crimp terminal includes a pressure-bonding section to which at least a conductor tip of an insulated wire is connected by pressure bonding, the insulated wire in which a conductor is covered with an insulating cover and an insulating cover on a tip side is peeled to expose the conductor to obtain the conductor tip, and a terminal connection section to which another connection terminal is allowed to be connected. The terminal connection section and the pressure-bonding section are configured as different parts, and a connection section in which the terminal connection section and the pressure-bonding section are connected in series in the order named from a tip side to a rear side in a long length direction is configured.
    Type: Application
    Filed: October 22, 2014
    Publication date: March 5, 2015
    Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Yukihiro KAWAMURA, Takashi Tonoike, Saburo Yagi
  • Patent number: 8936421
    Abstract: A locking structure of a screw-fastening block includes: a screw-fastening block made by providing a screw member for screwing and connecting a bus bar, a terminal, or the like on an upper portion of a screw-fastening block main body; and an electrically connecting block main body having a receiver into which the screw-fastening block is inserted upward side and in which the screw-fastening block is received. Locking portions are provided on both sidewalls of the receiver, and a bottom surface of the screw-fastening block main body is a lock-receiving portion to be engaged with the locking portion. The locking portions are locking arms projected obliquely upward from the both sidewalls, and a tip end of the locking arm is provided with a locking surface for supporting the bottom surface of the screw-fastening block main body, and a projecting piece for supporting a side surface of the screw-fastening block main body.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: January 20, 2015
    Assignee: Yazaki Corporation
    Inventor: Yukihiro Kawamura
  • Publication number: 20140374155
    Abstract: In an electrical wire connecting structure and a method of manufacturing the electrical wire connecting structure, a terminal having a tube-shaped portion of 2.0 mm in inner diameter is prepared for an electrical wire having a conductor cross-sectional area of 0.72 to 1.37 mm2, the electrical wire 13 is inserted into an electrical wire insertion port of the tube-shaped portion of the electrical wire, and the tube-shaped portion and the core wire portion of the electrical wire are compressed to be crimp-connected to each other. Furthermore, a terminal having a tube-shaped portion of 3.0 mm in inner diameter is prepared for an electrical wire having a conductor cross-sectional area of 1.22 to 2.65 mm2, the electrical wire is inserted into the electrical wire insertion port of the tube-shaped portion 25 of the electrical wire, and the tube-shaped portion and the core wire portion of the electrical wire are compressed to be crimp-connected to each other.
    Type: Application
    Filed: September 4, 2014
    Publication date: December 25, 2014
    Inventors: Akira TACHIBANA, Kengo MITOSE, Kyota SUSAI, Takao TATEYAMA, Yukihiro KAWAMURA, Takashi TONOIKE, Masakazu KOZAWA, Takuro YAMADA
  • Publication number: 20140378009
    Abstract: A crimp terminal includes; a crimping portion and a cover, the crimping portion is formed in a hollow cylindrical shape in cross section and has a first and a second end portion opposite to the first end portion. The conductor portion is inserted into the first end portion in a longitudinal direction, and the second end is sealed. The second end portion at the opposite side is sealed by welding. The crimping portion has a guide section inside the crimping portion into which the exposed conductor portion is inserted. An inner diameter of the guide section is smaller than an outer diameter of the cover of the insulated wire and larger than an outer diameter of the conductor portion. A length between the first end portion into which the conductor portion is inserted and the guide section is smaller than a length of the exposed conductor portion of the insulated wire.
    Type: Application
    Filed: September 11, 2014
    Publication date: December 25, 2014
    Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Takuro Yamada, Yukihiro Kawamura, Masakazu Kozawa, Takashi Tonoike
  • Publication number: 20140377991
    Abstract: A crimp terminal includes; a crimping portion and a cover covering the conductor portion, the crimping portion is formed in a hollow cylindrical shape in cross section and has a first end portion and a second end portion opposite to the first end portion. The conductor portion is inserted into the first end portion in a longitudinal direction, and the second end is sealed. The second end portion at the opposite side is sealed by welding. The crimping portion, in which the exposed conductor portion is crimped, further includes a locking section locking the exposed conductor portion. A length between the first end portion into which the conductor portion is inserted and a portion, of the locking section, that is the closest to the first end portion is larger than a length of the exposed conductor portion of the insulated wire.
    Type: Application
    Filed: September 9, 2014
    Publication date: December 25, 2014
    Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Yukihiro KAWAMURA, Takashi Tonoike, Takuro Yamada
  • Publication number: 20140335745
    Abstract: The present invention has an object of providing a crimp terminal capable of maintaining a high level of water-blocking performance for a long time in a state of being pressure-bonded to an insulated wire, a connection structural body including the same, and a connector including such a connection structural body.
    Type: Application
    Filed: July 29, 2014
    Publication date: November 13, 2014
    Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS, INC.
    Inventors: Yukihiro KAWAMURA, Takashi Tonoike
  • Patent number: 8641461
    Abstract: Has an object of providing a crimp terminal, a connection structural body, and a method for producing the crimp terminal, which has a conducting function with certainty, with no galvanic corrosion occurring due to an electric wire and the terminal formed of different metal materials. A crimp terminal 1 includes a box section, and a pressure-bonding section including a wire barrel section and an insulation barrel section, which are provided in this order. The crimp terminal is formed of a metal plate which is formed of a copper alloy having a higher potential than aluminum used to form core wires of an insulated wire which is to be pressure-bonded by the pressure-bonding section. The crimp terminal 1 includes, in at least a part thereof, a resin cover section for covering a surface of the metal plate with a resin.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: February 4, 2014
    Assignees: Furukawa Electric Co., Ltd., Furukawa Automotive Systems Inc.
    Inventors: Kengo Mitose, Yukihiro Kawamura
  • Patent number: 8633388
    Abstract: An attaching wall 82 is interposed between first and second walls 81a, 81b. A banding band 9 is inserted from a first gap 83a provided between the attaching wall 82 and the first wall 81a to a second gap 83b provided between the attaching wall 82 and the second wall 81b, there by the banding band 9 is attached to the attaching wall 82. A through-hole 8 is provided on the attaching wall 82. A first guide wall 85a inclined toward the attaching wall 82 as extended toward the second wall 81b is arranged at a position facing the through-hole 84. Further, a second guide wall 85b inclined toward the attaching wall 82 as extended toward the second wall 81b is arranged at a position facing the second gap 83b.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: January 21, 2014
    Assignee: Yazaki Corporation
    Inventors: Yukihiro Kawamura, Hiroaki Kamo
  • Patent number: 8622775
    Abstract: In a connection structural body, an aluminum electric wire tip part and a crimp terminal are connected to each other. The aluminum electric wire tip part is an exposed tip part of an insulated wire including an aluminum core wire and an insulating cover for covering the aluminum core wire. The crimp terminal includes a wire barrel section for pressure-bonding and thus connecting the aluminum electric wire tip part and is formed of a metal material having a higher potential than that of the aluminum core wire. The aluminum electric wire tip part is covered with a cover solder and/or a cover resin, pressure-bonded, and connected to the wire barrel section such that the aluminum electric wire tip part is covered with the cover and/or the cover resins, with no gap, from an insulating cover tip part to a rear end portion of the wire barrel section.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: January 7, 2014
    Assignees: Furukawa Electric Co., Ltd., Furukawa Automotive Systems Inc.
    Inventors: Naoya Takashima, Kengo Mitose, Yukihiro Kawamura
  • Publication number: 20130273787
    Abstract: An insulating body-forming part is formed on a border between a surface of a crimp terminal formed of an aluminum material and a conductive contact body provided on the surface and containing a nobler metal material than the aluminum material.
    Type: Application
    Filed: June 10, 2013
    Publication date: October 17, 2013
    Inventors: Kengo Mitose, Naoya Takashima, Yukihiro Kawamura
  • Publication number: 20130095708
    Abstract: A crimp terminal includes barrel pieces respectively on both of two sides in a width direction thereof. The barrel pieces are included in a pressure-bonding section for pressure-bonding an exposed part of an electric wire conductor of an insulated wire. The insulated wire includes the electric wire conductor and an insulating cover for covering an outer circumference of the electric wire conductor, and the exposed part is a part of the electric wire conductor which is exposed from a tip of the cover by a predetermined length. The barrel pieces have a length in a longitudinal direction which is longer than the length of the exposed part of the electric wire conductor. The pressure-bonding section pressure-bonds, by the barrel pieces, a continuous part from a tip of the electric wire conductor to a position rear to the tip of the cover.
    Type: Application
    Filed: October 1, 2012
    Publication date: April 18, 2013
    Inventors: Kengo Mitose, Yasushi Kihara, Yukihiro Kawamura
  • Publication number: 20130040511
    Abstract: In a connection structural body, an aluminum electric wire tip part and a crimp terminal are connected to each other. The aluminum electric wire tip part is an exposed tip part of an insulated wire including an aluminum core wire and an insulating cover for covering the aluminum core wire. The crimp terminal includes a wire barrel section for pressure-bonding and thus connecting the aluminum electric wire tip part and is formed of a metal material having a higher potential than that of the aluminum core wire. The aluminum electric wire tip part is covered with a cover solder and/or a cover resin, pressure-bonded, and connected to the wire barrel section such that the aluminum electric wire tip part is covered with the cover and/or the cover resins, with no gap, from an insulating cover tip part to a rear end portion of the wire barrel section.
    Type: Application
    Filed: August 6, 2012
    Publication date: February 14, 2013
    Applicants: Furukawa Automotive Systems Inc., FURUKAWA ELECTRIC CO., LTD.
    Inventors: Naoya Takashima, Kengo Mitose, Yukihiro Kawamura
  • Publication number: 20130040509
    Abstract: Has an object of providing a crimp terminal, a connection structural body, and a method for producing the crimp terminal, which has a conducting function with certainty, with no galvanic corrosion occurring due to an electric wire and the terminal formed of different metal materials. A crimp terminal 1 includes a box section, and a pressure-bonding section including a wire barrel section and an insulation barrel section, which are provided in this order. The crimp terminal is formed of a metal plate which is formed of a copper alloy having a higher potential than aluminum used to form core wires of an insulated wire which is to be pressure-bonded by the pressure-bonding section. The crimp terminal 1 includes, in at least a part thereof, a resin cover section for covering a surface of the metal plate with a resin.
    Type: Application
    Filed: August 6, 2012
    Publication date: February 14, 2013
    Applicants: FURUKAWA AUTOMOTIVE SYSTEMS INC., FURUKAWA ELECTRIC CO., LTD.
    Inventors: Kengo Mitose, Yukihiro Kawamura
  • Publication number: 20130017012
    Abstract: An attaching wall 82 is interposed between first and second walls 81a, 81b. A banding band 9 is inserted from a first gap 83a provided between the attaching wall 82 and the first wall 81a to a second gap 83b provided between the attaching wall 82 and the second wall 81b, there by the banding band 9 is attached to the attaching wall 82. A through-hole 8 is provided on the attaching wall 82. A first guide wall 85a inclined toward the attaching wall 82 as extended toward the second wall 81b is arranged at a position facing the through-hole 84. Further, a second guide wall 85b inclined toward the attaching wall 82 as extended toward the second wall 81b is arranged at a position facing the second gap 83b.
    Type: Application
    Filed: July 10, 2012
    Publication date: January 17, 2013
    Applicant: YAZAKI CORPORATION
    Inventors: Yukihiro Kawamura, Hiroaki Kamo
  • Patent number: 7566230
    Abstract: An electric distribution block includes a printed circuit board that has a distribution installation circuit, a block that has a plurality of terminals and is attached to the printed circuit board, and a power bus bar that has a rigid structure. The printed circuit board on which the block is attached is fixed to the power bus bar.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: July 28, 2009
    Assignee: Yazaki Corporation
    Inventors: Keisuke Ozawa, Katsuhiro Kubota, Yukihiro Kawamura, Akinori Nakashima
  • Publication number: 20060141822
    Abstract: An electric distribution block includes a printed circuit board that has a distribution installation circuit, a block that has a plurality of terminals and is attached to the printed circuit board, and a power bus bar that has a rigid structure. The printed circuit board on which the block is attached is fixed to the power bus bar.
    Type: Application
    Filed: December 23, 2005
    Publication date: June 29, 2006
    Inventors: Keisuke Ozawa, Katsuhiro Kubota, Yukihiro Kawamura, Akinori Nakashima