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Hideto Kumakura

Hideto Kumakura, Makinohara-Shi JP

Patent application numberDescriptionPublished
20080209716CRIMPING APPARATUS - 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 has a press-fastening portion for press-fastening the crimping piece portions. The anvil and the press-fastening portion of the crimper cooperate to press-fasten the crimping piece portions for crimping the crimping piece portions to the electric wire mounted on the metal terminal. The press-fastening portion is subjected to a mirror finish.09-04-2008
20090247001FEMALE TERMINAL AND CHAIN TERMINAL THEREOF - A female terminal, includes: a tubular portion which is formed by bending a metal sheet into a tubular shape; a peripheral wall which has a trapezoidal cross section having a pair of opposed shorter and longer sides to form a space extending in an axial direction of the female terminal inside the tubular portion; and a spring portion for pressing a male terminal inserted in the space, in a direction toward the shorter side of the peripheral wall. A maximum width of the male terminal is longer than the shorter side and is shorter than the longer side.10-01-2009
20100105257CRIMP TERMINAL AND METHOD OF PRODUCING CRIMP TERMINAL - 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.04-29-2010
20100120302CRIMP TERMINAL AND WIRE FIXING STRUCTURE - A crimp terminal includes a sheath mounting portion for mounting a sheath portion of a wire thereon, at least two sheath fixing portions that press-fastens to the sheath portion of the wire, wherein each of the sheath fixing portions has a pair of sheath press-fastening pieces extended respectively from opposite side edges of the sheath mounting portion, and a crimping connection portion that electrically connects to the conductor portion of the wire exposed at a distal end of the sheath portion. Extending directions and lengths of the pair of sheath press-fastening pieces of each of the sheath fixing portions are set so that distal end portions of the pair of sheath press-fastening pieces of each of the sheath fixing portions are superposed to each other when the pair of sheath press-fastening pieces are press-fastened on the sheath portion.05-13-2010
20100154212ELECTRIC WIRE PRESS FITTING METHOD - 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.06-24-2010
20100285701CRIMPING APPARATUS AND METAL TERMINAL - 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.11-11-2010
20110030211METHOD OF CRIMPING TERMINAL AND APPARATUS FOR CRIMPING TERMINAL - 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.02-10-2011

Patent applications by Hideto Kumakura, Makinohara-Shi JP

Hideto Kumakura, Makinohara JP

Patent application numberDescriptionPublished
20100144217Crimping terminal - 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.06-10-2010

Hideto Kumakura, Shizuoka JP

Patent application numberDescriptionPublished
20080214065Flat circuit device - The present invention is to provide a terminal and a mounting method thereof, which can fit in a conductor of a flat circuit device without increase in cost. A FFC has a conductor of a belt-shape and a covering portion for covering the conductor. The conductor has a groove along a longitudinal direction thereon, and is fixed in a terminal by placing on a bottom wall sandwiched between a pair of crimping pieces of the terminal and by crimping the pair of the crimping pieces.09-04-2008
20090269970TERMINAL CRIMPING STRUCTURE - A terminal crimping structure includes a terminal connection portion which connects an insulation-coated electric wire having a core wire covered with an insulation coating portion. The terminal connection portion has a first crimping member and a second crimping member. The first crimping member crimps a folded-back portion formed by folding back the core wire exposed from the insulation coating portion. The second crimping member crimps both of the insulation coating portion and an end of the folded-back portion which is superposed on the insulation coating portion.10-29-2009

Patent applications by Hideto Kumakura, Shizuoka JP