Toyota Jidosha Kabushiki Kaisha

Yazaki Corporation

The Furukawa Electric Co., Ltd.

Furukawa Automotive Systems Inc.

Hiroyasu Taga

Hiroshi Kobayashi

Takahito Nakashima

Motoya Hara

Yukihiro Kawamura

Takashi Tonoike

Takato Yoshida

Yasushi Kihara

Masaru Fukuda

Kei Sato

Hiroshi Aoki

Hirohito Nakata

Kazuhide Takahashi

Takeshi Osada

Kazuto Ohtaka

Shogo Suzuki

Masashi Iwata

Yoshifumi Shinmi

Junya Shinohara

Hironori Kitagawa

Kyutaro Abe

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

A female terminal fitting includes an electric connection portion having a bottom plate, side plates, and a top plate. An elastic contact piece opposed to the top plate or the bottom plate is provided inside the electric connection portion. The elastic contact piece includes a central contact which protrudes toward the top plate or the bottom plate. The top plate or the bottom plate includes a pair of contacts and a curved contact portion. The pair of contacts is provided respectively in widthwise edge portions of an inner surface of the top plate or the bottom plate. The curved contact portion is provided between the pair of contacts so as to be recessed like an arc.

Female terminal fitting and connector provided with the same

In a terminal-attached electric wire (), a resin portion () which covers a conductor-exposed portion of a terminal () to which a conductor is connected is formed by molding resin in the conductor-exposed portion. In the terminal-attached electric wire (), the resin portion () has a peeling preventive portion () which prevents the resin portion () from peeing off in a release direction of a die when the die is released.

Terminal-attached electric wire

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 water stop member of a crimp terminal is affixed to an inner wall surface of an electric wire connecting portion of a terminal fitting before crimping and forms into a first water stop area, a second water stop area, and a third water stop area after the crimping. The first water stop area suppresses entering of water from a space between the outer wall surface of a first barrel piece and the inner wall surface of a second barrel piece in the electric wire connecting portion. The second water stop area suppresses entering of water from the side closer to a terminal connecting portion of the terminal fitting than the distal end position of a core wire. The third water stop area suppresses entering of water from a space between the inner wall surface of a cover crimping portion of the electric wire connecting portion and a cover.

Crimp terminal

A crimp terminal includes: a terminal fitting having a terminal connecting portion electrically connected to a counterpart terminal and an electric wire connecting portion electrically connected by crimping to an end portion of an electric wire placed on an inner wall surface thereof; and a second water stop portion that is pasted on the inner wall surface of the electric wire connecting portion before crimping and that, after crimping, forms a second water stop area capable of suppressing water entry between the electric wire connecting portion and the core wire from the terminal connecting portion side with respect to the distal end position of the core wire at the distal end of the electric wire. The electric wire connecting portion has a core wire crimp portion crimped on the core wire at the distal end of the electric wire.

A water stop member of a crimp terminal is affixed to the inner wall surface of an electric wire connecting portion of a terminal fitting before crimping and forms into a first water stop area, a second water stop area, and a third water stop area after the crimping. The first water stop area suppresses entering of water from a space between the outer wall surface of a first barrel piece and the inner wall surface of a second barrel piece in the electric wire connecting portion. The second water stop area suppresses entering of water from the side closer to a terminal connecting portion of the terminal fitting than the distal end position of a core wire. The third water stop area suppresses entering of water from a space between the inner wall surface of a cover crimping portion of the electric wire connecting portion and a cover.

A terminal fitting includes a terminal connecting portion and an electric wire connecting portion. A water stop member is affixed to an inner wall surface of the electric wire connecting portion before crimping process and suppresses entering of water between the electric wire connecting portion and a core wire of the electric wire after the crimping. The electric wire connecting portion is formed into a U-shape by raising the first barrel piece and the second barrel piece from both ends of the bottom. The distal end of the first barrel piece is bent toward the second barrel piece, to form a gap between a slide contact surface on a descending second die and the distal end of the first barrel piece.

Crimp terminal and terminal crimping device

A crimp-connection structural body, a wire harness, a method of manufacturing a crimp-connection structural body, and a manufacturing device are provided. The crimp-connection structural body includes an insulated wire formed by covering a conductor by an insulating cover, and a crimp terminal having a crimp section allowing connection by crimp of a conductor exposed portion formed by exposing the conductor. The crimp section is formed of a closed-barrel-type crimp section, and a cross-sectional shape of the crimp section in a radial direction is formed into an approximately recessed cross-sectional shape having a crimp recessed portion formed by indenting by inclined portions inclined from positions spaced-apart from each other by a predetermined distance. The predetermined distance is set to 90% or less of an entire width of the crimp section. An opposedly facing angle made by the inclined portions is set to a value which ranges from 10&#xb0; to 120&#xb0; inclusive.

Crimp-connection structural body, wire harness, method of manufacturing crimp-connection structural body, and device of manufacturing crimp-connection structural body

A crimp terminal includes a terminal connecting portion, an electric wire connecting portion, and a coupling portion. The electric wire connecting portion is divided into a bottom placed on a recessed surface of a first die and on which an end of an electric wire is placed during the crimping process, a first barrel piece extending from a first end of the bottom and wound around the end of the electric wire, and a second barrel piece extending from a second end of the bottom and wound around the end of the electric wire. The bottom has a recess formed on an outer wall surface on the recessed surface side and into which a protrusion formed on the recessed surface is inserted during the crimping process, and a protrusion on an inner wall surface formed along with formation of the recess.

A crimp terminal includes a terminal connecting portion and an electric wire connecting portion. The electric wire connecting portion is sectioned into a bottom portion, a first barrel piece, and a second barrel piece, and is sectioned into a core wire crimp portion, a sheath crimp portion, and a coupling crimp portion. A water stop member affixed to the inner wall face of the electric wire connecting portion before crimping processing forms a first water stop area, that suppresses the entry of water, from the gap between the outer wall face of the first barrel piece and the inner wall face of the second barrel piece, a second water stop area from the terminal connecting portion side of the distal end position of a core wire, and a third water stop area from the gap between the inner wall face of the sheath crimp portion and a sheath.

Provided is an electric wire with a terminal (), in which a resin portion () molded by a die covers a conductor exposure portion of a terminal () to which a conductor is connected. At least groove portion () is provided at a part of the terminal () covered with the resin portion () so that the groove portion () prevents the resin portion () from separating from the terminal () in a removing direction of the die after the resin portion () is molded by the die.

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Toyota, Japan

Hiroyasu Taga