Patents by Inventor Takuji Otsuka
Takuji Otsuka 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).
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Patent number: 11745290Abstract: A metal member-welded structure includes: a Cu member; an Al member; and a welded portion formed by melting and solidifying each of materials of the Cu member and the Al member. The Cu member includes a Cu-based material containing Cu as a main component. The Al member includes an Al-based material containing Al as a main component and a plating layer that covers a side of the Al-based material, the side being close to a surface of the Cu member. The welded portion includes a sea-island structure in a vicinity of the surface of the Cu member. The sea-island structure includes: a plurality of island portions containing pure Al, and a sea portion interposed among the island portions. The sea portion has a eutectic structure having: a phase of an intermetallic compound of Cu and Al; and a phase of pure Al.Type: GrantFiled: July 24, 2019Date of Patent: September 5, 2023Assignees: Sumitomo Electrical Industries, Ltd., AutoNetworks Technologies, Ltd, Sumitomo Wiring Systems, Ltd.Inventors: Koki Sugimura, Tetsuya Kuwabara, Kazuhiro Goto, Hiroki Hirai, Tetsuji Tanaka, Junichi Ono, Takuji Otsuka, Kenji Miyamoto, Osamu Nakayama, Kazuaki Hamada, Kazuhiro Washio
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Publication number: 20230271569Abstract: A door wiring module includes: a service hole cover including a cover body part and a route indication part provided to the cover body part; and a wiring member whose route is regulated so that the wiring member passes through a first position and a second position on the cover body part. The route indication part indicates a plurality of routes each having a route length different from each other as routes of the wiring member between the first position and the second position, and a route of the wiring member is regulated so that the wiring member passes through any route selected from the plurality of routes.Type: ApplicationFiled: October 6, 2021Publication date: August 31, 2023Applicants: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Housei MIZUNO, Hiroki HIRAI, Takuji OTSUKA, Makoto HIGASHIKOZONO, Koji YAMAGUCHI
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Publication number: 20230145632Abstract: It is an object to provide a technique with which the length of a portion of a terminal-equipped electric wire disposed in a cavity of a connector housing can be shortened. A terminal-equipped electric wire including: a coated electric wire including a conductor core wire and an insulation coating that covers the conductor core wire; a joint terminal connected to the conductor core wire; a connector terminal to be connected to a partner terminal; a single-core relay conductor in which one end thereof is connected to the joint terminal and another end thereof is connected to the connector terminal; and a sealing member that covers an intermediate portion of the relay conductor. A wire barrel of the joint terminal is crimped to the conductor core wire and the relay conductor at the same position in a longitudinal direction of the joint terminal.Type: ApplicationFiled: April 5, 2021Publication date: May 11, 2023Inventors: Yoshitaka IKEDA, Takuji OTSUKA, Kosuke SONE, Keisuke KONDO, Takahiro MARUYAMA, Yasuto TAKEDA, Tomoyuki KONDO
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Publication number: 20210339339Abstract: A metal member-welded structure includes: a Cu member; an Al member; and a welded portion formed by melting and solidifying each of materials of the Cu member and the Al member. The Cu member includes a Cu-based material containing Cu as a main component. The Al member includes an Al-based material containing Al as a main component and a plating layer that covers a side of the Al-based material, the side being close to a surface of the Cu member. The welded portion includes a sea-island structure in a vicinity of the surface of the Cu member. The sea-island structure includes: a plurality of island portions containing pure Al, and a sea portion interposed among the island portions. The sea portion has a eutectic structure having: a phase of an intermetallic compound of Cu and Al; and a phase of pure Al.Type: ApplicationFiled: July 24, 2019Publication date: November 4, 2021Applicants: Sumitomo Electric Industries, Ltd., AutoNetworks Technologies, Ltd, Sumitomo Wiring Systems, Ltd.Inventors: Koki SUGIMURA, Tetsuya KUWABARA, Kazuhiro GOTO, Hiroki HIRAI, Tetsuji TANAKA, Junichi ONO, Takuji OTSUKA, Kenji MIYAMOTO, Osamu NAKAYAMA, Kazuaki HAMADA, Kazuhiro WASHIO
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Patent number: 10559403Abstract: A composition having an oil film retention function which an oil film can be stably retained on surfaces of various metals, an anticorrosive agent using same, and insulated terminated electric wire. A composition having oil film retention function for being added to base oil to be applied onto a metal surface and retaining base oil on metal surface, and composition contains a component that is an adduct of an azole compound and acidic alkyl phosphate ester including one or more compounds represented by General Formulae (1) (Chemical Formula 1) P(?O)(—OR1)(—OH)2 . . . (1) or General Formula (2) (Chemical Formula 2) P(?O)(—OR1)2(—OH) . . . (2) where R1 represents an organic group having four or more carbon atoms, and component that is an adduct of a metal and/or organic amine compound and acidic alkyl phosphate ester including one or more compounds represented by General Formulae (1) or (2).Type: GrantFiled: September 26, 2014Date of Patent: February 11, 2020Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., KYUSHU UNIVERSITYInventors: Tatsuya Hase, Takehiro Hosokawa, Kazuo Nakashima, Kazuhiro Goto, Hiroki Hirai, Junichi Ono, Takuji Otsuka, Hideki Nomura, Makoto Mizoguchi
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Patent number: 10290957Abstract: A terminal-equipped wire includes a wire with a core wire and an insulating coating with which the core wire is coated, and a terminal fitting that is attached to a leading end of the wire. The terminal fitting is electrically connected to the core wire in a core-wire crimp portion, and is fixed to the wire from an external side of the insulating coating in a coating crimp portion that is located rearward of the core-wire crimp portion in a longitudinal direction of the wire. The terminal-equipped wire also includes a resin-coated portion where a region containing the core-wire crimp portion and the coating crimp portion is coated with a resin. The resin-coated portion has a thin-walled portion with a reduced thickness, in a portion of the resin-coated portion that covers the insulating coating.Type: GrantFiled: May 31, 2018Date of Patent: May 14, 2019Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Takuya Yamashita, Tetsuya Nakamura, Yoshiaki Yamano, Junichi Ono, Takuji Otsuka, Takaaki Ito
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Patent number: 10224647Abstract: A wire with terminal includes a wire in which a core is covered with a coating, and a terminal 20 including a wire barrel 24 to be crimped to the core exposed from the coating of the wire and an insulation barrel 26 to be crimped to the coating of the wire. The wire is pulled rearwardly from the terminal. Recesses 26B are provided on a surface of the insulation barrel 26 to be crimped and openings of the recesses 26B are shaped to become narrower toward a rear side. As the wire is pulled more rearwardly, the coating penetrating into the recesses 26B moves rearwardly of the recesses 26B to be compressed and hardened and becomes less likely to come out of the recesses 26B. Thus, impact strength can be enhanced.Type: GrantFiled: February 16, 2016Date of Patent: March 5, 2019Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Hiroshi Hamada, Satoshi Morikawa, Takehiro Nakata, Takuji Otsuka, Takanobu Shimada
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Publication number: 20180366842Abstract: A terminal-equipped wire includes a wire with a core wire and an insulating coating with which the core wire is coated, and a terminal fitting that is attached to a leading end of the wire. The terminal fitting is electrically connected to the core wire in a core-wire crimp portion, and is fixed to the wire from an external side of the insulating coating in a coating crimp portion that is located rearward of the core-wire crimp portion in a longitudinal direction of the wire. The terminal-equipped wire also includes a resin-coated portion where a region containing the core-wire crimp portion and the coating crimp portion is coated with a resin. The resin-coated portion has a thin-walled portion with a reduced thickness, in a portion of the resin-coated portion that covers the insulating coating.Type: ApplicationFiled: May 31, 2018Publication date: December 20, 2018Inventors: Takuya Yamashita, Tetsuya Nakamura, Yoshiaki Yamano, Junichi Ono, Takuji Otsuka, Takaaki Ito
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Publication number: 20180062277Abstract: A wire with terminal includes a wire in which a core is covered with a coating, and a terminal 20 including a wire barrel 24 to be crimped to the core exposed from the coating of the wire and an insulation barrel 26 to be crimped to the coating of the wire. The wire is pulled rearwardly from the terminal. Recesses 26B are provided on a surface of the insulation barrel 26 to be crimped and openings of the recesses 26B are shaped to become narrower toward a rear side. As the wire is pulled more rearwardly, the coating penetrating into the recesses 26B moves rearwardly of the recesses 26B to be compressed and hardened and becomes less likely to come out of the recesses 26B. Thus, impact strength can be enhanced.Type: ApplicationFiled: February 16, 2016Publication date: March 1, 2018Inventors: Hiroshi Hamada, Satoshi Morikawa, Takehiro Nakata, Takuji Otsuka, Takanobu Shimada
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Publication number: 20170117650Abstract: To provide a surface protective agent composition that suppresses corrosion of members of different kinds of metals close to each other due to corrosion current between the metals of the members, and to provide an electric connection structure and a method for producing an electric connection structure using the same. The surface protective agent composition contains (a) a lubricant base oil; (b) a prescribed amount of at least one compound selected from the group consisting of particular phosphorus compounds and a metal salt or an amine salt thereof; and (c) a prescribed amount of an amide compound, and in the case where the component (b) does not contain the metal salt of the phosphorus compound, the surface protective agent composition further contains (d) a prescribed amount of a salicylate of a particular metal and/or a basic (or perbasic) salt thereof, and the electric connection structure containing a surface protective layer consisting of the surface protective agent composition.Type: ApplicationFiled: March 24, 2015Publication date: April 27, 2017Applicants: JX Nippon Oil & Energy Corporation, Sumitomo Electric Industries, Ltd., Sumitomo Wiring Systems, Ltd., Autonetworks Technologies, Ltd., Kyushu University, National University CorporationInventors: Koichi Yoshida, Takashi Arai, Yuji Shitara, Kenichi Komiya, Makoto Mizoguchi, Hideki Nomura, Takuji Otsuka, Junichi Ono, Hiroki Hirai, Kazuo Nakashima, Tatsuya Hase, Takehiro Hosokawa, Kazuhiro Goto
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Patent number: 9490550Abstract: Provided are an aluminum-based terminal fitting in which a Sn layer has high peel resistance, and a terminal connecting structure of an electric wire provided with the terminal fitting. The aluminum-based terminal fitting includes a wire barrel portion (110) for connection to a conductor (210) constituted by aluminum or an aluminum alloy and provided in an electric wire (200), and a fitting portion (female fitting portion (130) or male fitting portion (140)) provided to extend from the wire barrel portion (110) and electrically connected to a separate terminal fitting. A Sn layer formed directly on a base material constituting the terminal fitting is provided on the contact region in the fitting portion.Type: GrantFiled: August 22, 2012Date of Patent: November 8, 2016Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.Inventors: Takuji Otsuka, Hiroki Hirai, Junichi Ono, Kingo Furukawa, Teruyoshi Munekata, Hajime Ota, Yoshihiro Nakai, Taichiro Nishikawa, Tetsuya Kuwabara, Yoshiyuki Takaki, Hiroyuki Kobayashi
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Publication number: 20160211053Abstract: A composition having an oil film retention function which an oil film can be stably retained on surfaces of various metals, an anticorrosive agent using same, and insulated terminated electric wire. A composition having oil film retention function for being added to base oil to be applied onto a metal surface and retaining base oil on metal surface, and composition contains a component that is an adduct of an azole compound and acidic alkyl phosphate ester including one or more compounds represented by General Formulae (1) (Chemical Formula 1) P(?O)(—OR1)(—OH) 2 . . . (1) or General Formula (2) (Chemical Formula 2) P(?O)(—OR1)2(—OH) . . . (2) where R1 represents an organic group having four or more carbon atoms, and component that is an adduct of a metal and/or organic amine compound and acidic alkyl phosphate ester including one or more compounds represented by General Formulae (1) or (2).Type: ApplicationFiled: September 26, 2014Publication date: July 21, 2016Inventors: Tatsuya HASE, Takehiro HOSOKAWA, Kazuo NAKASHIMA, Kazuhiro GOTO, Hiroki HIRAI, Junichi ONO, Takuji OTSUKA, Hideki NOMURA, Makoto MIZOGUCHI
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Patent number: 9252505Abstract: An object is to obtain a stable electric connection resistance under a mild crimping condition. The present invention is a terminal connector 12 that includes a crimp portion 30 to be crimped to an electric wire. The crimp portion 30 includes a base material, an aluminum layer or an aluminum alloy layer a surface on the base material, and a hard layer on a surface of the aluminum layer or the aluminum alloy layer. The hard layer is harder than the base material. The present invention may be an electric wire with a terminal connector 10 that includes the above terminal connector 12 and a covered electric wire 40 that includes a core wire 42 made of aluminum or aluminum alloy. The crimp portion 30 of the terminal connector 12 is crimped to the core wire 42.Type: GrantFiled: August 30, 2012Date of Patent: February 2, 2016Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Takuji Otsuka, Hiroki Hirai, Junichi Ono, Kingo Furukawa, Teruyoshi Munekata, Hajime Ota, Yoshihiro Nakai, Taichiro Nishikawa, Tetsuya Kuwabara, Yoshiyuki Takaki, Hiroyuki Kobayashi
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Patent number: 9209615Abstract: An electric wire with terminal includes an electric wire covering an outer periphery of a core wire with an insulating coating and a female terminal. The female terminal includes: a wire barrel having a bottom plate on which the core wire is placed and crimped onto the core wire; a groove portion extending from the bottom plate in a direction in which the core wire extends and whose surface on the side where the core wire is placed is bent into a concave shape. The groove portion has a water blocking wall molded by synthetic resin. The water blocking wall is provided to fill the inside of the groove portion. A region extending from the water blocking wall to the end of the insulating coating is covered with a water blocking coating, and the inner surface of the water blocking coating is in close contact with the water blocking wall.Type: GrantFiled: August 3, 2011Date of Patent: December 8, 2015Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Junichi Ono, Eiji Saijo, Hiroki Hirai, Takuji Otsuka, Hiroki Shimoda, Hajime Kawase, Takuya Inoue, Masaaki Tabata, Takehiro Nakata, Satoshi Morikawa, Mikiko Kosaka
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Patent number: 9184541Abstract: A terminal-provided wire (10) includes a wire (13) with a core (11) whose end is exposed, and a terminal (20) crimped to the end of the core (11) and connectable to a mating side. The terminal (20) includes a front terminal portion (21) and a rear terminal portion (22). The rear terminal portion (22) includes a bottom plate portion (26) on which the core (11) is to be placed, a pair of wire barrel portions (27) extending from the bottom plate portion (26) and to be crimped to the core (11), an easily breakable portion (28) extending in an axial direction from the bottom plate portion (26) and to be broken at the time of disassembling, and a fixing portion (29) extending in the axial direction from the easily breakable portion (28).Type: GrantFiled: March 15, 2013Date of Patent: November 10, 2015Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kenji Miyamoto, Junichi Ono, Toshiya Oota, Takuji Otsuka, Takashi Tonosaki
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Publication number: 20150079825Abstract: A terminal-provided wire (10) includes a wire (13) with a core (11) whose end is exposed, and a terminal (20) crimped to the end of the core (11) and connectable to a mating side. The terminal (20) includes a front terminal portion (21) and a rear terminal portion (22). The rear terminal portion (22) includes a bottom plate portion (26) on which the core (11) is to be placed, a pair of wire barrel portions (27) extending from the bottom plate portion (26) and to be crimped to the core (11), an easily breakable portion (28) extending in an axial direction from the bottom plate portion (26) and to be broken at the time of disassembling, and a fixing portion (29) extending in the axial direction from the easily breakable portion (28).Type: ApplicationFiled: March 15, 2013Publication date: March 19, 2015Inventors: Kenji Miyamoto, Junichi Ono, Toshiya Oota, Takuji Otsuka, Takashi Tonosaki
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Publication number: 20140235116Abstract: Provided are an aluminum-based terminal fitting in which a Sn layer has high peel resistance, and a terminal connecting structure of an electric wire provided with the terminal fitting. The aluminum-based terminal fitting includes a wire barrel portion (110) for connection to a conductor (210) constituted by aluminum or an aluminum alloy and provided in an electric wire (200), and a fitting portion (female fitting portion (130) or male fitting portion (140)) provided to extend from the wire barrel portion (110) and electrically connected to a separate terminal fitting. A Sn layer formed directly on a base material constituting the terminal fitting is provided on the contact region in the fitting portion.Type: ApplicationFiled: August 22, 2012Publication date: August 21, 2014Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.Inventors: Takuji Otsuka, Hiroki Hirai, Junichi Ono, Kingo Furukawa, Teruyoshi Munekata, Hajime Ota, Yoshihiro Nakai, Taichiro Nishikawa, Tetsuya Kuwabara, Yoshiyuki Takaki, Hiroyuki Kobayashi
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Publication number: 20140224535Abstract: An object is to obtain a stable electric connection resistance under a mild crimping condition. The present invention is a terminal connector 12 that includes a crimp portion 30 to be crimped to an electric wire. The crimp portion 30 includes a base material, an aluminum layer or an aluminum alloy layer a surface on the base material, and a hard layer on a surface of the aluminum layer or the aluminum alloy layer. The hard layer is harder than the base material. The present invention may be an electric wire with a terminal connector 10 that includes the above terminal connector 12 and a covered electric wire 40 that includes a core wire 42 made of aluminum or aluminum alloy. The crimp portion 30 of the terminal connector 12 is crimped to the core wire 42.Type: ApplicationFiled: August 30, 2012Publication date: August 14, 2014Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.Inventors: Takuji Otsuka, Hiroki Hirai, Junichi Ono, Kingo Furukawa, Teruyoshi Munekata, Hajime Ota, Yoshihiro Nakai, Taichiro Nishikawa, Tetsuya Kuwabara, Yoshiyuki Takaki, Hiroyuki Kobayashi
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Patent number: 8802987Abstract: An aluminum electric wire (10) has a metallic core wire (11) coated with an insulation coating (13). A female terminal fitting (20) made of metal different from the core wire (11) has a wire barrel (25) to be connected to the aluminum electric wire (10). A solder seal (30) is formed of solder having a main component with an ionizing tendency close to that of the terminal fitting. The wire barrel (25) is crimped to the core wire (11) exposed by peeling off the insulation coating (13) of the aluminum electric wire (10) and partially sealed with the solder. A seal connection portion (14) connects the insulation coating (13), the exposed core wire (11) and the solder seal (30) to each other in a condition where the coating (13) and the solder seal (30) are sealed off from each other.Type: GrantFiled: March 11, 2011Date of Patent: August 12, 2014Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd, Sumitomo Electric Industries, LtdInventors: Satoshi Morikawa, Kazumasa Kobayashi, Takuji Otsuka, Hiroki Shimoda
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Patent number: 8726500Abstract: A method for manufacturing an electric wire with a terminal, includes crimping a barrel portion of the terminal onto a core wire constructed of metal wires and creating a crack in a metal oxide layer immediately before the crimping. The metal oxide layer is formed on a metal surface of the core wire. The creating of crack is accomplished by applying a mechanical force to the metal oxide layer.Type: GrantFiled: March 18, 2010Date of Patent: May 20, 2014Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Masahiro Hagi, Hiroki Shimoda, Hiroki Hirai, Junichi Ono, Tetsuji Tanaka, Takuji Otsuka