The Furukawa Electric Co., Ltd.

Furukawa Automotive Systems Inc.

Toyota Jidosha Kabushiki Kaisha

Yasushi Kihara

Yukihiro Kawamura

Takashi Tonoike

Hiroshi Kobayashi

Takahito Nakashima

Hiroyasu Taga

Kengo Mitose

Saburo Yagi

Takashi Shigematsu

Katsuki Suematsu

Akira Tachibana

Masao Shinoda

Jun Yamakawa

Kyutaro Abe

Hiroshi Orito

Koji Yamanaka

Shigeki Sekiya

Sho Yoshida

Tsuneo Aoi

Satoshi Takamura

Takashi Kayahara

Masahiro Hirao

Tomoki Kawamura

When molds (), () are caused to mesh so that a crimping portion () is compressed, the crimping portion () is crimped to conductive wires () and a cover portion (). A conductor crimping portion () is completely compressed by the molds (), (). A cover crimping portion () preliminarily compresses the cover portion (). Next, temporarily compressed terminal-equipped electrical wires are disposed between different molds. When the molds are caused to mesh so that the crimping portion () is compressed, the cover crimping portion () is forcefully compressed. In other words, the cover crimping portion () is subjected to final compression. In other words, the present invention is provided with a first compression step for preliminarily compressing the cover portion () and a second compression step for forcefully compressing the covering part.

Method for manufacturing terminal-equipped electrical wires

Under compression by molds (), a wire (), a covered area (), and a crimping portion () are compressed and their cross-sectional areas decrease. Here, A1 is the cross-sectional area of the wire () after compression. That is, A1 is the sum of the cross-sectional area of the each strand after compression. Also,is the cross-sectional area of the covered area () after compression. In the present invention, the compression rate for the wire () is set between 50% and 80%. Also, the compression rate for the covered area () is set between 40% and 90%. The amount of compression by the molds () is set so that the compression rates are within these ranges. In the present invention, the compression rate is calculated by: (cross-sectional area after compression)/(cross-sectional area before compression). That is, 80% compression rate means that the cross-sectional area has decreased by 20% due to compression. That is, the relationships of 80%&#x2265;(A1/A0)&#x2265;50% and 90%&#x2265;(B1/B0)&#x2265;40% are satisfied.

Wire harness, connection method between covered conducting wire and terminal, and wire harness structure body

An electric wire apparatus includes an electric wire including an aluminum alloy wire rod having an outer periphery portion coated, and a crimp terminal crimped to an end portion of the electric wire, the crimp terminal having a barrel portion crimped with the aluminum alloy wire rod, the barrel portion having a one-end closed tubular shape. The aluminum alloy wire rod has a composition including 0.10 mass % to 1.00 mass % of magnesium (Mg), 0.10 mass % to 1.00 mass % of silicon (Si), 0.01 mass % to 2.50 mass % of iron (Fe), 0.000 mass % to 0.100 mass % of titanium (Ti), 0.000 mass % to 0.030 mass % of boron (B), 0.00 mass % to 1.00 mass % of copper (Cu), 0.00 mass % to 0.50 mass % of silver (Ag), 0.00 mass % to 0.50 mass % of gold (Au), 0.00 mass % to 1.00 mass % of manganese (Mn), 0.00 mass % to 1.00 mass % of chromium (Cr), 0.00 mass % to 0.50 mass % of zirconium (Zr), 0.00 mass % to 0.50 mass % of hafnium (Hf), 0.00 mass % to 0.50 mass % of vanadium (V), 0.00 mass % to 0.50 mass % of scandium (Sc), 0.00 mass % to 0.50 mass % of cobalt (Co), 0.00 mass % to 0.50 mass % of nickel (Ni), and the balance including aluminum and inevitable impurities.

Electric wire apparatus

The height (F) of a protruding portion () is less than the thickness of a crimping portion () before crimping. If the height of the protruding portion () is greater than the thickness of the crimping portion, then a recess is prone to form in the inner surface of the crimping portion (). In other words, because there is more metal flowing outwards, a recess corresponding to the metal flow is prone to form on the inner surface side. If such a recess does form, adhesion with a covered area () is likely to deteriorate. This is problematic because such a gap would be a path allowing the ingress of moisture. On the other hand, if the height of the protruding portion () is less than the thickness of the crimping portion () before crimping, then when the crimping portion () is compressed during crimping, the amount of metal flowing towards the protruding portion () diminishes, making it possible to suppress the formation of a receding portion on the inner surface of the crimping portion ().

Wire harness, method of connecting terminal and coated wire, and mold

A covered conductive wire is configured by covering a conductive wire with an insulating cover portion. The conductive wire is formed of an aluminum-based material, for example. A crimping portion includes a cover crimping portion for crimping the cover portion of the covered conductive wire, and a conductor crimping portion for crimping a portion of the conductive wire that is exposed when the cover portion is removed at the tip portion of the covered conductive wire. It is possible to use polyvinyl chloride and/or a non-halogen member, for example, for the cover portion of the covered conductive wire, and a plasticizer, filler, stabilizer, or the like is compounded as needed. A material that shrinks by a factor of 7% or less after being allowed to stand for 120 hours at a high temperature of 120&#xb0; C. is used for this cover portion.

Electrical wire with terminal, and wire harness structure

A conductor wire crimping portion () has depressions () that are disposed at prescribed intervals in the axial direction and that are linear locking portions. The depressions () are continuously depressed grooves on the inner surface of a crimping portion (). On an upper die (), at a portion corresponding to the conductor wire crimping portion (), a straight portion is formed, and in the front-back direction thereof, tapered portions are formed. More specifically, the upper die () is formed to have an inverted trapezoid shape, a middle portion of which protrudes in the crimping direction. Consequently, at each boundary between the straight portion and the tapered portion, a die angled portion () is formed. At an area corresponding to the straight portion of the upper die (), the depression () is provided, and at an area corresponding to the die angled section (), the depression () is provided.

Terminal, wire harness, terminal and coated conductor wire connection method, and wire harness structure

A method for manufacturing a crimp terminal having a crimp portion adapted to allow crimp connection with a coated wire having a conductor and an insulating coating, the crimp portion being adapted to crimp connect along the coated wire from a portion of the conductor coated with the insulating coating to a portion of the conductor exposed from the insulating coating at a tip of the coated wire includes providing a barrel member formed by arranging edges of a copper alloy plate material side-by-side, the barrel member having a diameter reducing on an end portion side in a longitudinal direction from a coating crimp portion, forming the crimp portion by welding the edges by laser irradiation from a laser irradiation unit onto a position where the edges are arranged side-by-side, while moving a laser light irradiation position in a longitudinal direction of the barrel member, and irradiating laser light with an output power density and a sweep rate for causing fine molten metal particles having a diameter of 60 &#x3bc;m or less to ejected from the weld portion during laser welding to adhere to an inner surface of the barrel member.

Crimp terminal, and method and apparatus for manufacturing a crimp terminal

A barrel portion which allows the pressure-bonding connection of an aluminum core wire exposed on a distal end of an insulated wire covered with an insulating cover is formed into a cylindrical shape by bending barrel portion corresponding portions of a terminal base material in a terminal developed state about a terminal axis. In abutting end portions where the barrel portion corresponding portions abut each other, a welded part which welds the end portions is formed along a long length direction of the insulated wire. The welded part is formed on an upper surface concave portion and a projecting portion where an amount of plastic deformation of a conductor pressure-bonding section generated along with the pressure-bonding of the conductor pressure-bonding section becomes larger compared to other portions in a circumferential direction of the conductor pressure-bonding section.

Crimp terminal, connection structural body, and method of manufacturing connection structural body

In a female crimp terminal including a pressure-bonding section for permitting pressure-bonding and connection to an aluminum core wire of an insulated wire, the pressure-bonding section is configured in a hollow sectional shape by a plate material, and a long length direction weld portion in a long length direction is welded, a forward part in the hollow sectional shape is caused to take an almost flat plate-shaped sealing shape and a width direction weld portion in a width direction is welded.

Crimp terminal, connection structural body and connector

In a female crimp terminal having a pressure-bonding section which allows pressure-bonding and connection of a conductor tip in an insulated wire obtained by coating a conductor with an insulating cover and having the conductor tip in which the conductor is exposed by peeling off the insulating cover in a tip side, the pressure-bonding section is constructed by arranging a conductor pressure-bonding section and a cover pressure-bonding section from a tip side to a base end side in a long length direction in this order, the conductor pressure-bonding section pressure-bonding the conductor tip, and the cover pressure-bonding section pressure-bonding a conductor tip portion in the tip side of the insulating cover, the cover pressure-bonding section is formed into a hollow shape which can surround the conductor tip portion, and the conductor pressure-bonding section is formed to have a smaller diameter than the cover pressure-bonding section, and is formed into a hollow shape which can surround the conductor tip.

Crimp terminal, connection structural body, connector and pressure-bonding method of crimp terminal

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.

A method for producing a ferrule having a plurality of fiber holes for insertion of optical fibers formed between two pin holes for insertion of guide pins, and a ferrule produced by the method. The method comprises a step of injecting a synthetic resin in a mold for forming the ferrule while holding a plurality of pins with a Young's modulus of(22 to 59)&times;10 N/m for forming the fiber holes at two points separated by a distance of 1.5 to 4 mm in a lengthwise direction of the pins.

Method of producing ferrule and ferrule

A manufacturing apparatus for multi-fiber optical ferrule includes a spacer whose hardness is equivalent to or higher than the hardness of pins for forming fiber holes. Further, corner portions with respect to the arrangement direction of the pins for forming fiber holes of the spacer are formed as inclined surfaces or rounded surfaces.

Manufacturing apparatus for producing a multi-fiber optical ferrule

A ferrule for a multi optical connector is formed by filling a cavity in a mold with melted resin and the ferrule is pushed out of the cavity by pressing a face on the side in which an adhesive pouring port is formed of the formed ferrule. Two positions on both outer sides with respect to a center line in the arrangement direction of the fiber or three or more positions including those two positions, near a joint end face on a face on the side in which the adhesive pouring port is formed, are pressed.

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Tokyo, Japan

Yasushi Kihara