Yazaki Corporation

Satoshi Yagi

Hideto Kumakura

Tetsuro Ide

Kenji Suzuki

Shigeharu Suzuki

Naoki Kakuta

Osamu Murata

Koji Higuchi

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.

Crimping apparatus and metal terminal

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.

Terminal crimping structure and terminal crimping method of crimping terminal to copper alloy wire and wire harness with the terminal crimping structure

A terminal crimping apparatus includes an anvil for supporting a metal terminal including a base plate portion for placing 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 press-deforming portion having a generally arch-shape formed of two arc-shaped surfaces which are opposed to the anvil. The anvil and the crimper cooperate to press the crimping piece portions for crimping the crimping piece portions to the electric wire placed on the metal terminal. The shape of the crimper satisfies a formula, Index a=c&#xb7;cos &#x3b8;, where c represents a length of the arc-shaped surface of the crimper, and &#x3b8; represents an angle formed by a tangential line to the arc-shaped surface at a central portion of the crimper and a vertical line.

Terminal crimping 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.

Crimping apparatus

An apparatus for measuring a metal terminal includes a crimping unit which crimps core wire crimping piece portions to a core wire of a sheathed electric wire to form a core wire crimping portion and crimps sheath crimping piece portions to a sheath portion of the sheathed electric wire to form a sheath crimping portion, a gripping member which grips the core wire crimping portion in a direction perpendicular to an extending direction of a base plate portion of the metal terminal, and a measuring unit which measures a dimension of the core wire crimping portion and a dimension of the sheath crimping portion. A height of the sheath crimping portion is measured in a direction intersecting with or parallel to the direction of gripping of the core wire crimping portion in a state that the core wire crimping portion is gripped in a direction perpendicular to an extending direction of the base plate portion.

Method of measuring metal terminal and apparatus for measuring the same

A metal terminal includes a base plate portion for placing an electric wire thereon and a pair of crimping piece portions which extend upwardly respectively from opposite side edges of the base plate portion for press-contacting the electric wire. Each of the crimping piece portions has a distal end portion and a body portion such that a thickness of the each of crimping piece portions is tapered toward a distal end surface of the distal end portion from the body portion. A thickness of a distal end of the distal end portion relative to a board thickness T of the body portion of the each of crimping piece portions is not smaller than &#x2155;T and is less than &#xbd;T. An exterior angle of an angle formed by the distal end surface of the distal end portion and a tapered surface of the distal end portion is 60&#xb0; to 30&#xb0;.

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Makinohara, Japan

Satoshi Yagi