Patents by Inventor Hideto Kumakura
Hideto Kumakura 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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Publication number: 20250007203Abstract: A connector includes a casing that holds, on the inside, a terminal provided at the end of an electric wire and includes a cylindrical section fitted with a mating connector of a mating device (a connection target) in a fitting direction, a packing that seals an annular space between the outer peripheral surface of the cylindrical section and the mating connector, a fastening member that is attached to penetrate the inside of the cylindrical section in the fitting direction from a through-hole formed in one end face in the fitting direction of the casing, and is fixed to a fixed wall surface of the mating device in a state in which the cylindrical section and the mating connector are fitted, and a seal member that seals an annular gap between the outer peripheral surface of the fastening member and the inner surface of the through-hole.Type: ApplicationFiled: June 20, 2024Publication date: January 2, 2025Inventors: Hideto Kumakura, Hiroshi Shinba
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Publication number: 20240429652Abstract: A connector includes a housing member having a fitting portion to be fitted with a mating connector, and a fixing member fixed to a fixed wall surface together with the housing member. The fixing member has the through hole of the fastening bolt that is fastened to the fastening hole of the fixed wall surface to fix the fixing member to the fixed wall surface together with the housing member. The housing member is positioned on the opposite side of the through hole provided in the fixing member with the fitting portion interposed therebetween with respect to the vertical direction, and has the positioning projection portion formed to protrude toward the fixed wall surface in the fitted state. The positioning projection portion is inserted into the wall surface groove portion formed in the fixed wall surface along the insertion and removal direction in the fitted state.Type: ApplicationFiled: May 29, 2024Publication date: December 26, 2024Inventors: Hideto Kumakura, Yuuki Hiruta
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Publication number: 20240421528Abstract: A connector includes: a plurality of terminal-attached electric wires in each of which a terminal is attached to an electric wire in a direction intersecting an extending direction of the electric wire; and a housing including a plurality of compartments that holds the terminal in a fitting direction, and a plurality of electric wire insertion portions that is provided penetrating a side wall portion and configured to extract the electric wire in the plurality of terminal-attached electric wires from an internal space in a direction intersecting the fitting direction. The housing has guide portions provided between individual accommodating regions for the plurality of terminal-attached electric wires arrayed and accommodated in the internal space. The guide portion has an inclined surface inclined with respect to the extending direction of the electric wire.Type: ApplicationFiled: May 13, 2024Publication date: December 19, 2024Inventors: Hideto Kumakura, Takuya Ohashi
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Publication number: 20240405457Abstract: A terminal block unit includes a plurality of terminal metal fittings, a terminal block main body configured to hold the plurality of terminal metal fittings, a bas bar unit including a plurality of bus bars each having both end portions in which a first connection hole and a second connection hole to be connected to an electric device are formed, and a plurality of bolts configured to fasten any one of the plurality of bas bars to each of the plurality of terminal metal fittings. The bas bar unit includes a resin molded portion configured to integrally support a part of each of the plurality of bus bars in a non-contact state, and another part of each of the plurality of bus bars at which the resin molded portion is not provided is an exposed portion.Type: ApplicationFiled: May 28, 2024Publication date: December 5, 2024Applicant: YAZAKI CORPORATIONInventors: Shotarou SHIBATA, Hayato IIZUKA, Hideto KUMAKURA, Takumi OKI
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Publication number: 20240258748Abstract: A connector configured to be connected to an object includes: an electric wire with a terminal; a housing; a shield shell; and a fixing element. The fixing element is fixed to the shield shell and protrudes toward a front side. In a state of the fixing element being inserted in a guiding section in the object, displacement of the fixing element along an axial direction is limited. An end of the fixing element oriented toward the front side is located further toward the front side than ends of the housing and the shield shell oriented toward the front side.Type: ApplicationFiled: January 25, 2024Publication date: August 1, 2024Applicant: Yazaki CorporationInventors: Shotarou SHIBATA, Hayato IIZUKA, Hideto KUMAKURA, Takumi OKI, Takuya OHASHI
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Publication number: 20240258738Abstract: A connection structure is a structure for connecting a housing and a cover. In the cover, an engagement portion which protrudes from a main body portion disposed in an opening of the housing is provided. The engagement portion includes a first protruding portion protruding to an outside in an inside-outside direction and a second protruding portion continuing with the first protruding portion to extend in a front-rear direction. In the housing, an accommodation groove for accommodating the engagement portion is provided. The accommodation groove includes a first groove extending in the inside-outside direction and a second groove continuing with the first groove to extend in the front-rear direction. In a state in which the housing and the cover are connected, the first protruding portion is accommodated in the first groove, and the second protruding portion is accommodated in the second groove.Type: ApplicationFiled: January 18, 2024Publication date: August 1, 2024Applicant: Yazaki CorporationInventors: Shotarou SHIBATA, Hayato IIZUKA, Hideto KUMAKURA, Takumi OKI, Takuya OHASHI
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Patent number: 9401549Abstract: A wire-equipped crimp terminal includes a wire, a crimp terminal and a coating agent. The wire has a conductor exposed from an insulative sheath. The crimp terminal has a crimping piece which is press-deformed to embrace the conductor. The coating agent is coated to a first part of the crimp terminal. A recess is formed at a non-coating part of the crimp terminal where the coating agent is not coated. The coating agent is cured by irradiating light or an electron beam to the first part in a state where a part of the coating agent flowing out from the first part is received in the recess.Type: GrantFiled: December 9, 2010Date of Patent: July 26, 2016Assignee: YAZAKI CORPORATIONInventors: Hideto Kumakura, Yuichi Ito, Nobuyuki Asakura
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Patent number: 9088079Abstract: A crimped terminal attached electric wire comprising an electric wire, which is made by covering a conductor part with an insulative coating, and a crimped terminal including a conductor crimping part which is crimped to the conductor part when a pair of crimping strip parts form a joint along the extending direction of the conductor part, wherein the conductor crimping part is swelled in a direction perpendicular to the extending direction of the conductor part, and is formed into a barrel form while the joint is the only joint, when the conductor crimping part is crimped to the conductor part.Type: GrantFiled: March 15, 2013Date of Patent: July 21, 2015Assignee: YAZAKI CORPORATIONInventors: Hideto Kumakura, Takahito Nakashima, Hiroshi Kobayashi, Saori Yamazaki
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Patent number: 9077088Abstract: A fiber conductor wire structure includes a fiber conductor and a terminal. The fiber conductor has a first portion with an outer insulating resin and a second portion with an outer conductive metal. The second portion defines a knot. The terminal has a hole for inserting the fiber conductor. The hole has a receiving portion configured to receive the knot in locked engagement and electrical connection with the terminal. A connecting method for the fiber conductor wire includes forming a knot with a portion of a fiber conductor having an outer conductive metal, inserting the fiber conductor into a hole of a terminal, and pulling the fiber conductor through the hole to engage the knot with a receiving portion of the terminal to place the knot in locked engagement and electrical connection with the terminal.Type: GrantFiled: September 15, 2011Date of Patent: July 7, 2015Assignee: Yazaki CorporationInventors: Toshihiko Yamamoto, Yutaka Terasaka, Hideto Kumakura
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Patent number: 8616927Abstract: A crimping apparatus includes an anvil for supporting a metal terminal including a base plate portion for mounting an electric wire thereon and a pair of crimping piece portions extending upwardly respectively from opposite side edges of the base plate portion and a crimper which includes a groove portion being opposed to a supporting portion of the anvil. An inner surface of the groove portion of the anvil and a terminal support face of the supporting portion of the crimper cooperate to press the crimping piece portions for crimping the crimping piece portions to the electric wire mounted on the metal terminal. A width of the groove portion of the crimper is not more than 1.0 mm. The terminal support surface of the anvil is formed into a concavely curved surface in which a depth of the concavely curved surface is not smaller than 0.06 mm and is not larger than 0.17 mm in a cross-section of the anvil perpendicular to an axis direction of the electric wire.Type: GrantFiled: July 16, 2010Date of Patent: December 31, 2013Assignee: Yazaki CorporationInventors: Satoshi Yagi, Shigeharu Suzuki, Tetsuro Ide, Hideto Kumakura, Kenji Suzuki
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Publication number: 20130252489Abstract: A crimped terminal attached electric wire comprising an electric wire, which is made by covering a conductor part with an insulative coating, and a crimped terminal including a conductor crimping part which is crimped to the conductor part when a pair of crimping strip parts form a joint along the extending direction of the conductor part, wherein the conductor crimping part is swelled in a direction perpendicular to the extending direction of the conductor part, and is formed into a barrel form while the joint is the only joint, when the conductor crimping part is crimped to the conductor part.Type: ApplicationFiled: March 15, 2013Publication date: September 26, 2013Applicant: YAZAKI CORPORATIONInventors: Hideto Kumakura, Takahito Nakashima, Hiroshi Kobayashi, Saori Yamazaki
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Publication number: 20130180778Abstract: There is provided a connecting structure of a fiber conductor wire including: a fiber conductor having a knot; and a terminal having a hole for inserting the fiber conductor, said hole having a receiving portion for receiving the knot, wherein the fiber conductor wire and the terminal are electrically connected to each other by inserting the fiber conductor into the hole and by locking the knot in the receiving portion. There is also provided a connecting method of a fiber conductor wire comprising the steps of forming a not by tying loosely a fiber conductor; inserting the fiber conductor into a hole of a terminal; and pulling the fiber conductor to engage the knot with a receiving portion of the hole and to electrically connect the knot to the receiving portion.Type: ApplicationFiled: September 15, 2011Publication date: July 18, 2013Applicant: YAZAKI CORPORATIONInventors: Toshihiko Yamamoto, Yutaka Terasaka, Hideto Kumakura
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Patent number: 8375578Abstract: This invention provides with an electric wire press fitting method, in which an aluminum core wire of each of two aluminum wires are stranded to each other and inserted into a sleeve, and the aluminum core wire of each of the two aluminum wires are compressed and swaged along with the sleeve, wherein the sleeve includes a main body made of copper or a copper alloy; and the compression is performed on the aluminum core wire of each of the two aluminum wires at a compression ratio of 50 to 85% by the main body.Type: GrantFiled: November 30, 2009Date of Patent: February 19, 2013Assignee: Yazaki CorporationInventor: Hideto Kumakura
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Patent number: 8312625Abstract: An apparatus for crimping a terminal with a wire includes a first crimper and a second crimper. The first crimper presses the terminal with the wire at a first position of the wire. The second crimper presses the terminal with the wire at a second position of the wire after the first crimper presses the terminal at the first position. The first position is disposed between a tip end of the wire and the second position in an extending direction of the wire.Type: GrantFiled: July 28, 2010Date of Patent: November 20, 2012Assignee: Yazaki CorporationInventor: Hideto Kumakura
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Publication number: 20120214360Abstract: A wire-equipped crimp terminal includes a wire, a crimp terminal and a coating agent. The wire has a conductor exposed from an insulative sheath. The crimp terminal has a crimping piece which is press-deformed to embrace the conductor. The coating agent is coated to a first part of the crimp terminal. A recess is formed at a non-coating part of the crimp terminal where the coating agent is not coated. The coating agent is cured by irradiating light or an electron beam to the first part in a state where a part of the coating agent flowing out from the first part is received in the recess.Type: ApplicationFiled: December 9, 2010Publication date: August 23, 2012Applicant: YAZAKI CORPORATIONInventors: Hideto Kumakura, Yuichi Ito, Nobuyuki Asakura
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Patent number: 8187043Abstract: A crimp terminal includes a bottom plate portion for mounting a wire conductor of a wire thereon, a pair of press-fastening portions extended respectively from opposite side edges of the bottom plate portion to press-fasten the wire conductor, a raised portion provided on the bottom plate portion, and that has slanting surfaces slanting along an axis of the wire conductor mounted on the bottom plate portion to form a curved shape projecting toward the wire conductor, and an auxiliary contact portion protrudingly formed on at least one of the slanting surfaces. The auxiliary contact portion is moved in a direction along the axis of the wire conductor by a pressing load applied for crimping the wire conductor so that the wire conductor is elongated.Type: GrantFiled: September 16, 2009Date of Patent: May 29, 2012Assignee: Yazaki CorporationInventors: Hideto Kumakura, Naoki Ito
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Patent number: 7985923Abstract: A terminal crimping structure includes a terminal crimped to a copper alloy wire. The terminal has a crimping piece portion crimped to the copper alloy core wire portion. A rate of compression of the copper alloy core wire portion, of a particular diameter, by the crimping piece portion is determined from a relative relation between a parameter varying according to the ratio of (the cross-sectional area of the copper alloy core wire portion at a crimped portion)/(the cross-sectional area of the copper alloy core wire portion before crimping) and a parameter varying according to the ratio of (a cross-sectional area of an annealed copper core wire portion at a crimped portion)/the cross-sectional area of the annealed copper core wire portion before crimping) which is the rate of compression of the annealed copper core wire portion by the crimping piece portion.Type: GrantFiled: January 7, 2008Date of Patent: July 26, 2011Assignee: Yazaki CorporationInventors: Satoshi Yagi, Shigeharu Suzuki, Tetsuro Ide, Hideto Kumakura, Kenji Suzuki
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Patent number: 7896715Abstract: A crimping terminal includes a pair of core wire crimping pieces raised up from a bottom plate. A contact strip is provided with gaps formed between the core wire crimping pieces and the contact strip for inserting core wires of an aluminum electric wire. The contact strip has a sloped wall or a curved wall for guiding the core wires from the gaps toward the bottom plate. The contact strip is formed in a flat plate shape, and has sloped walls at both left and right sides thereof. The contact strip is formed in an arc sectional shape, and has curved walls at both left and right sides thereof. The contact strip is formed in an inverted V sectional shape, and has sloped walls at both left and right sides thereof. The contact strips are arranged two-tiered. A serration is formed on the contact strip.Type: GrantFiled: October 15, 2009Date of Patent: March 1, 2011Assignee: Yazaki CorporationInventors: Hideto Kumakura, Naoki Ito
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Publication number: 20110030211Abstract: An apparatus for crimping a terminal with a wire includes a first crimper and a second crimper. The first crimper presses the terminal with the wire at a first position of the wire. The second crimper presses the terminal with the wire at a second position of the wire after the first crimper presses the terminal at the first position. The first position is disposed between a tip end of the wire and the second position in an extending direction of the wire.Type: ApplicationFiled: July 28, 2010Publication date: February 10, 2011Applicant: YAZAKI CORPORATIONInventor: Hideto KUMAKURA
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Publication number: 20100285701Abstract: A crimping apparatus includes an anvil for supporting a metal terminal including a base plate portion for mounting an electric wire thereon and a pair of crimping piece portions extending upwardly respectively from opposite side edges of the base plate portion and a crimper which includes a groove portion being opposed to a supporting portion of the anvil. An inner surface of the groove portion of the anvil and a terminal support face of the supporting portion of the crimper cooperate to press the crimping piece portions for crimping the crimping piece portions to the electric wire mounted on the metal terminal. A width of the groove portion of the crimper is not more than 1.0 mm. The terminal support surface of the anvil is formed into a concavely curved surface in which a depth of the concavely curved surface is not smaller than 0.06 mm and is not larger than 0.17 mm in a cross-section of the anvil perpendicular to an axis direction of the electric wire.Type: ApplicationFiled: July 16, 2010Publication date: November 11, 2010Applicant: YAZAKI CORPORATIONInventors: Satoshi Yagi, Shigeharu Suzuki, Tetsuro Ide, Hideto Kumakura, Kenji Suzuki