JP2015076237A - Crimping terminal - Google Patents

Crimping terminal Download PDF

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JP2015076237A
JP2015076237A JP2013210989A JP2013210989A JP2015076237A JP 2015076237 A JP2015076237 A JP 2015076237A JP 2013210989 A JP2013210989 A JP 2013210989A JP 2013210989 A JP2013210989 A JP 2013210989A JP 2015076237 A JP2015076237 A JP 2015076237A
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Prior art keywords
core wire
crimping
wire
end side
crimp terminal
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準弥 篠原
Junya Shinohara
準弥 篠原
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Yazaki Corp
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Yazaki Corp
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Priority to JP2013210989A priority Critical patent/JP2015076237A/en
Priority to PCT/JP2014/076661 priority patent/WO2015053208A1/en
Publication of JP2015076237A publication Critical patent/JP2015076237A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/188—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping having an uneven wire-receiving surface to improve the contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors

Abstract

PROBLEM TO BE SOLVED: To provide a crimping terminal capable of reducing the electrical resistance at an electrical connection point with a wire.SOLUTION: In a crimping terminal 10A having a core wire crimping part 16 for crimping a core wire 1 consisting of a plurality of strands 1a of a wire W, the core wire crimping part 16 is provided with a notch 19 at an intermediate position of the core wire 1 in the axial direction.

Description

本発明は、電線に接続する圧着端子に関する。   The present invention relates to a crimp terminal connected to an electric wire.

この種の従来の圧着端子として、特許文献１に開示されたものがある。図８及び図９に示すように、圧着端子１１０を接続する電線Ｗは、複数の素線１０１ａからなる芯線１０１と芯線１０１の外周を覆う絶縁外皮１０２とから構成されている。電線Ｗの先端側は、絶縁外皮１０２が除去されて芯線１０１が露出されている。   A conventional crimp terminal of this type is disclosed in Patent Document 1. As shown in FIGS. 8 and 9, the electric wire W to which the crimp terminal 110 is connected is constituted by a core wire 101 composed of a plurality of strands 101 a and an insulating sheath 102 covering the outer periphery of the core wire 101. At the tip end side of the electric wire W, the insulating sheath 102 is removed and the core wire 101 is exposed.

圧着端子１１０は、相手端子接続部１１１と電線接続部１１５を有する。電線接続部１１５は、芯線圧着部１１６と外皮圧着部１１７を有する。芯線圧着部１１６は、基底部１１６ａとこの基底部１１６ａの両側から延設された一対の加締め片部１１６ｂを有する。芯線圧着部１１６の基底部１１６ａと一対の加締め片部１１６ｂの内面には、三本の長溝（セレーション）１１８が形成されている。外皮圧着部１１７は、基底部１１７ａとこの基底部１１７ａの両側から延設された一対の加締め片部１１７ｂを有する。   The crimp terminal 110 has a mating terminal connection portion 111 and a wire connection portion 115. The wire connection portion 115 includes a core wire crimping portion 116 and an outer skin crimping portion 117. The core wire crimping part 116 has a base part 116a and a pair of caulking piece parts 116b extending from both sides of the base part 116a. Three long grooves (serrations) 118 are formed on the inner surfaces of the base portion 116 a and the pair of caulking pieces 116 b of the core wire crimping portion 116. The outer skin crimping part 117 has a base part 117a and a pair of caulking piece parts 117b extending from both sides of the base part 117a.

圧着端子１１０は、芯線圧着部１１６によって露出された芯線１０１を加締め圧着し、外皮圧着部１１７によって絶縁外皮１０２を加締め圧着している。   The crimp terminal 110 crimps and crimps the core wire 101 exposed by the core wire crimping portion 116, and crimps and crimps the insulating sheath 102 by the outer skin crimping portion 117.

特開２００９−１２３６２３号公報JP 2009-123623 A

ところで、加締め圧着は、加締め治具（図示せず）で一対の芯線加締め片部１１６ｂを押圧し、一対の加締め片部１１６ｂを塑性変形することにより行う。この加締め過程では、芯線加締め片部１１６ｂより芯線１０１が圧着力を受ける。すると、図９に示すように、芯線１０１が左右いずれの方向（ａ矢印方向、ｂ矢印方向）にも自由に伸びることができる。一般的には、芯線加締め片部１１６ｂの先端側に位置する芯線１０１は、先端側（ａ矢印方向）に伸び、芯線加締め片部１１６ｂの後端側（絶縁外皮側）に位置する芯線１０１は、後端側（絶縁外皮側）（ｂ矢印方向）に伸びる。   By the way, the crimping is performed by pressing the pair of core wire crimping pieces 116b with a crimping jig (not shown) and plastically deforming the pair of crimping pieces 116b. In this caulking process, the core wire 101 receives a crimping force from the core wire caulking piece portion 116b. Then, as shown in FIG. 9, the core wire 101 can freely extend in either the left or right direction (a arrow direction, b arrow direction). In general, the core wire 101 located on the distal end side of the core wire crimping piece 116b extends to the distal end side (a arrow direction), and the core wire located on the rear end side (insulating outer sheath side) of the core wire crimping piece 116b. 101 extends to the rear end side (insulating skin side) (in the direction of arrow b).

このように芯線１０１が自由に伸び、縮径するため、圧着力が有効に芯線１０１の各素線１０１ａに作用しない。素線１０１ａは、伸びることによって新生面を発生するものの低い圧縮力しか受けないため、凝着が発生しない、若しくは、発生しても凝着が促進されない。凝着が不足すると、素線１０１ａ間の導通特性が向上せず、電気接続箇所の電気抵抗が高くなるという問題があった。   Since the core wire 101 freely expands and contracts in this way, the crimping force does not effectively act on each strand 101a of the core wire 101. Although the strand 101a generates a new surface when it extends, it receives only a low compressive force. Therefore, adhesion does not occur, or even if it occurs, adhesion is not promoted. When the adhesion is insufficient, there is a problem in that the conduction characteristics between the strands 101a are not improved, and the electrical resistance at the electrical connection point is increased.

そこで、本発明は、前記した課題を解決すべくなされたものであり、電線との電気接続箇所における電気抵抗を低減できる圧着端子を提供することを目的とする。   Then, this invention is made | formed in order to solve the above-mentioned subject, and it aims at providing the crimp terminal which can reduce the electrical resistance in the electrical connection location with an electric wire.

本発明は、電線の複数の素線からなる芯線を圧着する芯線圧着部を有する圧着端子であって、前記芯線圧着部には、前記芯線の軸方向の中間位置に切欠部が設けられたことを特徴とする圧着端子である。   The present invention is a crimp terminal having a core wire crimping portion for crimping a core wire composed of a plurality of strands of an electric wire, wherein the core wire crimping portion is provided with a notch at an intermediate position in the axial direction of the core wire. This is a crimp terminal characterized by the following.

前記切欠部は、前記芯線圧着部の芯線軸方向の中央よりも前記芯線の先端側の位置に設けられたものであっても良い。前記切欠部は、複数箇所に設けられたものであっても良い。   The cutout portion may be provided at a position closer to the distal end side of the core wire than the center in the core wire axial direction of the core wire crimping portion. The notch may be provided at a plurality of locations.

本発明によれば、芯線圧着部の加締め過程では、芯線に圧着力が作用するため、各素線が伸びることによって新生面が発生する。又、芯線圧着部の加締め過程では、芯線圧着部の切欠部の両エッジに芯線が食い込むため、芯線の伸びが抑制される箇所が生じ、芯線に圧縮力が効率良く作用する箇所が生じる。つまり、各素線の伸びによる新生面の発生と、各素線に効率良く圧縮力が作用することによって凝着が発生し、素線間の導通特性が向上する。以上より、電気接続箇所の電気抵抗が低減する。   According to the present invention, in the caulking process of the core wire crimping portion, a crimping force acts on the core wire, so that a new surface is generated when each strand extends. Further, in the caulking process of the core wire crimping portion, the core wire bites into both edges of the notch portion of the core wire crimping portion, so that a portion where the core wire is prevented from being stretched occurs, and a portion where the compressive force acts efficiently on the core wire occurs. That is, the generation of a new surface due to the elongation of each strand and the occurrence of adhesion due to the efficient compression force acting on each strand improves the conduction characteristics between the strands. From the above, the electrical resistance at the electrical connection point is reduced.

本発明の第１実施形態を示し、圧着端子に電線を圧着する前の斜視図である。It is a perspective view before showing a 1st embodiment of the present invention and crimping an electric wire to a crimp terminal. 本発明の第１実施形態を示し、（ａ）は電線を圧着した圧着端子の側面図、（ｂ）は（ａ）の要部拡大図である。The 1st Embodiment of this invention is shown, (a) is a side view of the crimp terminal which crimped | bonded the electric wire, (b) is the principal part enlarged view of (a). 本発明の第２実施形態を示し、図２のＡ−Ａ線断面図である。FIG. 3 shows a second embodiment of the present invention and is a cross-sectional view taken along line AA in FIG. 2. 本発明の第１実施形態を示し、加締め治具の斜視図である。1 is a perspective view of a caulking jig according to a first embodiment of the present invention. 本発明の第１実施形態を示し、加締め治具による加締め作業を説明する側面図である。It is a side view which shows 1st Embodiment of this invention and demonstrates the crimping operation | work by a crimping jig. 本発明の第２実施形態を示し、圧着端子に電線を圧着する前の斜視図である。It is a perspective view before showing a 2nd embodiment of the present invention and crimping an electric wire to a crimp terminal. 本発明の第２実施形態を示し、（ａ）は電線を圧着した圧着端子の側面図、（ｂ）は（ａ）の要部拡大図である。2nd Embodiment of this invention is shown, (a) is a side view of the crimp terminal which crimped | bonded the electric wire, (b) is a principal part enlarged view of (a). 従来例を示し、圧着端子に電線を圧着する前の斜視図である。It is a perspective view before showing a prior art example and crimping | bonding an electric wire to a crimp terminal. 従来例を示し、電線を圧着した圧着端子の側面図である。It is a side view of the crimp terminal which showed the prior art example and crimped the electric wire.

以下、本発明の実施形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（第１実施形態）
図１〜図５は本発明の第１実施形態を示す。図１〜図３に示すように、電線Ｗは、複数の素線１ａからなる芯線１と芯線１の外周を覆う絶縁外皮２とから構成されている。電線Ｗの先端側は、絶縁外皮２が除去されて芯線１が露出されている。芯線１は、アルミニウム製又はアルミニウム合金製（以下、アルミ製）の多数の素線１ａから成り、多数の素線１ａが互いに撚られている。つまり、電線Ｗは、アルミ電線である。 (First embodiment)
1 to 5 show a first embodiment of the present invention. As shown in FIGS. 1 to 3, the electric wire W includes a core wire 1 composed of a plurality of strands 1 a and an insulating sheath 2 that covers the outer periphery of the core wire 1. At the tip end side of the electric wire W, the insulating sheath 2 is removed and the core wire 1 is exposed. The core wire 1 is composed of a large number of strands 1a made of aluminum or aluminum alloy (hereinafter referred to as aluminum), and the numerous strands 1a are twisted together. That is, the electric wire W is an aluminum electric wire.

圧着端子１０Ａは、例えば銅合金製であり、所定形状に裁断したプレートを折り曲げ加工することによって形成されている。圧着端子１０Ａは、相手端子接続部１１と電線接続部１５を有する。電線接続部１５は、芯線圧着部１６と外皮圧着部１７を有する。芯線圧着部１６は、基底部１６ａとこの基底部１６ａの両側から延設された一対の加締め片部１６ｂを有する。芯線圧着部１６の基底部１６ａと一対の加締め片部１６ｂの内面には、多数の丸形状の溝（セレーション）１８が形成されている。又、各加締め片部１６ｂには、芯線１の軸方向の中間位置に切欠部１９が一箇所設けられている。切欠部１９は、各加締片部１６ｂの芯線軸方向の中心位置Ｃ１（図２（ｂ）に示す）よりも芯線１の先端側の位置に設けられている。   The crimp terminal 10A is made of, for example, a copper alloy, and is formed by bending a plate cut into a predetermined shape. The crimp terminal 10 </ b> A has a mating terminal connection portion 11 and a wire connection portion 15. The electric wire connecting portion 15 includes a core wire crimping portion 16 and an outer skin crimping portion 17. The core wire crimping part 16 has a base part 16a and a pair of caulking piece parts 16b extending from both sides of the base part 16a. A large number of round grooves 18 are formed on the inner surfaces of the base portion 16a and the pair of caulking piece portions 16b of the core wire crimping portion 16. Each caulking piece portion 16b is provided with a notch 19 at an intermediate position in the axial direction of the core wire 1. The notch 19 is provided at a position closer to the distal end side of the core wire 1 than the center position C1 (shown in FIG. 2B) in the core axis direction of each crimping piece 16b.

外皮圧着部１７は、基底部１７ａとこの基底部１７ａの両側から延設された一対の加締め片部１７ｂを有する。   The outer skin crimping part 17 has a base part 17a and a pair of caulking piece parts 17b extending from both sides of the base part 17a.

圧着端子１０Ａは、芯線圧着部１６によって露出された芯線１を加締め圧着し、外皮圧着部１７によって絶縁外皮２を加締め圧着している。   The crimp terminal 10 </ b> A crimps and crimps the core wire 1 exposed by the core wire crimping portion 16, and crimps and crimps the insulating sheath 2 by the outer skin crimping portion 17.

圧着端子１０Ａは、図４に示す加締め治具２０によって圧着される。加締め治具２０は、その加締め先端側に最終的な加締め外周形状の加締め溝２１を有する。図５に示すように、加締め治具２０によって一対の芯線加締め片部１６ｂを上方から押圧すると、加締め溝２１に沿って一対の加締め片部１６ｂが塑性変形される。   The crimp terminal 10A is crimped by a crimping jig 20 shown in FIG. The caulking jig 20 has a caulking groove 21 having a final caulking outer peripheral shape on the caulking tip side. As shown in FIG. 5, when the pair of core wire crimping pieces 16 b are pressed from above by the crimping jig 20, the pair of crimping pieces 16 b are plastically deformed along the crimping grooves 21.

この加締め過程では、芯線圧着部１６より芯線１が圧着力を受けるため、各素線１ａが伸びることによって新生面が発生する。又、芯線圧着部１６の加締め過程では、芯線圧着部１６の切欠部１９の両エッジに芯線１が食い込むため、芯線１の伸びが抑制される箇所が生じ、芯線１に圧縮力が効率良く作用する箇所が生じる。   In this caulking process, since the core wire 1 receives a crimping force from the core wire crimping portion 16, a new surface is generated when each strand 1a extends. Further, in the caulking process of the core wire crimping portion 16, the core wire 1 bites into both edges of the notch portion 19 of the core wire crimping portion 16, so that a portion where the elongation of the core wire 1 is suppressed occurs, and the core wire 1 is efficiently compressed. The place which acts is produced.

具体的には、この第１実施形態では、図２（ｂ）に示すように、芯線１の先端側のエッジｅ１を起点としてこれより先端側の芯線箇所Ｅ１は、加締め力による圧縮力で芯線１の先端側（ａ矢印方向）に伸びることができる。一方、芯線１の後端側のエッジｅ２を起点としてこれより後端側の芯線箇所Ｅ２は、加締め力による圧縮力で芯線１の後端側（ｂ矢印方向）に伸びることができるものの芯線１の先端側（ａ矢印方向）への伸びが抑制される。換言すれば、後端側の芯線箇所Ｅ２では、各素線１ａの伸びによる新生面の発生と、各素線１ａに効率良く圧縮力が作用することによって凝着が発生し、素線１間の導通特性が向上する。以上より、電気接続箇所の電気抵抗が低減する。   Specifically, in the first embodiment, as shown in FIG. 2 (b), the leading end side edge e1 of the core wire 1 is used as a starting point, and the leading end side core wire portion E1 is compressed by a caulking force. The core wire 1 can extend to the tip side (a arrow direction). On the other hand, starting from the edge e2 on the rear end side of the core wire 1, the core wire portion E2 on the rear end side can extend to the rear end side (in the direction of arrow b) of the core wire 1 by the compressive force of the caulking force. 1 is restrained from extending toward the tip (a arrow direction). In other words, in the core wire portion E2 on the rear end side, adhesion occurs due to the generation of a new surface due to the extension of each strand 1a and the effective compression force acting on each strand 1a. The conduction characteristics are improved. From the above, the electrical resistance at the electrical connection point is reduced.

このように圧着端子１０Ａの一部を設計変更することによって、電気接続箇所における芯線１の導通特性を向上させることができるため、単線化等に較べてほとんどコストアップなしに電気接続箇所の電気抵抗を低減できる。   Thus, by changing the design of a part of the crimp terminal 10A, the conduction characteristics of the core wire 1 at the electrical connection location can be improved. Can be reduced.

切欠部１９は、芯線圧着部１６の芯線軸方向の中心Ｃ１ではなく、中心Ｃ１よりも芯線１の先端側の位置に設けられている。これにより、後端側の芯線箇所Ｅ２が先端側の芯線箇所Ｅ１よりも長くなり、新生面が発生し、且つ、圧縮力が効率良く作用する範囲を広くできる。従って、凝着の発生範囲を広くでき、素線１間の導通特性の向上を図ることができる。   The cutout portion 19 is provided not at the center C1 of the core wire crimping portion 16 in the core wire axis direction but at a position closer to the distal end side of the core wire 1 than the center C1. Thereby, the core wire part E2 on the rear end side is longer than the core wire part E1 on the front end side, a new surface is generated, and the range in which the compressive force acts efficiently can be widened. Accordingly, the range of occurrence of adhesion can be widened, and the conduction characteristics between the strands 1 can be improved.

芯線圧着部１６の内面には、溝（セレーション）１８が設けられている。芯線１の素線１ａが溝１８に入り込むよう変形、つまり、伸び変形するため、新生面が発生し、圧縮力を受けることなどによって凝着が発生するため、芯線１と芯線圧着部１６との間の導通抵抗の低減になると共に素線１ａ間の導通抵抗の低減になる。これによっても、電気接続箇所の電気抵抗の低減を図ることができる。   A groove (serration) 18 is provided on the inner surface of the core wire crimping portion 16. Since the element wire 1a of the core wire 1 is deformed so as to enter the groove 18, that is, is deformed by extension, a new surface is generated, and adhesion occurs due to receiving a compressive force. And the conduction resistance between the strands 1a is reduced. This also makes it possible to reduce the electrical resistance at the electrical connection point.

芯線１は、アルミ製である。アルミ製の素線１ａは、銅合金製に較べて表面にできる酸化被膜が厚い。そのため、アルミ製の芯線１は、素線１ａ間の導通抵抗による電気抵抗の増加が問題であったが、本発明では、素線１ａ間の導通抵抗を低減できるため、特にアルミ電線に有効である。アルミ製の芯線１は、銅合金製に較べて柔らかくて伸び易いが、上記した理由によって芯線圧着部１６の加締め圧着による圧縮力が芯線１に効率良く作用させることができるため、本発明は、この観点からも特にアルミ電線に有効である。   The core wire 1 is made of aluminum. The aluminum strand 1a has a thicker oxide film on the surface than the copper alloy. For this reason, the aluminum core wire 1 has a problem of an increase in electrical resistance due to the conduction resistance between the strands 1a. However, in the present invention, the conduction resistance between the strands 1a can be reduced. is there. Although the aluminum core wire 1 is softer and easier to extend than the copper alloy product, the compression force of the core wire crimping portion 16 can be efficiently applied to the core wire 1 for the reasons described above. From this point of view, it is particularly effective for aluminum electric wires.

（第２実施形態）
図６及び図７は、本発明の第２実施形態を示す。この第２実施形態の圧着端子１０Ｂは、前記第１実施形態のものと比較して、一対の芯線圧着部１６に切欠部１９ａ，１９ｂが間隔を置いて二箇所設けられている点が相違する。そして、先端側の切欠部１９ａは、各加締片部１６ｂの芯線軸方向の中心位置Ｃ１（図７（ｂ）に示す）よりも芯線１の先端側の位置に設けられている。 (Second Embodiment)
6 and 7 show a second embodiment of the present invention. The crimp terminal 10B according to the second embodiment is different from that according to the first embodiment in that notches 19a and 19b are provided at two positions in the pair of core wire crimp parts 16 at intervals. . And the notch part 19a by the side of a front end is provided in the position of the front end side of the core wire 1 rather than the center position C1 (shown in FIG.7 (b)) of each crimping piece part 16b of the core wire axial direction.

他の構成は、前記第１実施形態と同一であるため、同一構成箇所には同一符号を付してその説明を省略する。   Since the other configuration is the same as that of the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

上記構成において、芯線圧着部１６の加締め過程では、芯線圧着部１６より芯線１が圧着力を受ける。すると、前記第１実施形態と同様に、各芯線加締め片部１６ｂの各切欠部１９ａ，１９ｂの各両エッジに芯線１が食い込むため、芯線圧着部１６によって芯線１に圧縮力が作用しても芯線１が自由に先端側や後端側に伸びることができず、芯線１の伸びが抑制される。   In the above configuration, in the caulking process of the core wire crimping portion 16, the core wire 1 receives a crimping force from the core wire crimping portion 16. Then, as in the first embodiment, since the core wire 1 bites into each edge of each notch 19a, 19b of each core wire crimping piece portion 16b, a compressive force acts on the core wire 1 by the core wire crimping portion 16. However, the core wire 1 cannot freely extend to the front end side or the rear end side, and the extension of the core wire 1 is suppressed.

具体的には、この第２実施形態では、図７（ｂ）に示すように、芯線１の先端側のエッジｅ１を起点としてこれより先端側の芯線箇所Ｅ１は、加締め力による圧縮力で芯線１の先端側（ａ矢印方向）に伸びることができる。一方、芯線１の最も後端側のエッジｅ２を起点としてこれより後端側の芯線箇所Ｅ２は、加締め力による圧縮力で芯線１の後端側（ｂ矢印方向）に伸びることができるものの芯線１の先端側（ａ矢印方向）への伸びが抑制される。又、２つの切欠部１９ａ，１９ｂの間に位置する芯線箇所Ｅ３は、加締め力による圧縮力で芯線１の先端側（ａ矢印方向）にも後端側（ｂ矢印方向）にも伸びることが抑制される。換言すれば、後端側の芯線箇所Ｅ２の芯線１は、圧縮力によって抑制されつつではあるが伸びるために芯線１に新生面が発生し、且つ、伸びが抑制されることによって芯線１には圧縮力が効率良く作用する。又、中間位置の芯線箇所Ｅ３の芯線１は、加締め力による圧縮力によって伸びが十分に抑制されるものの、圧縮力による素線１ａ間の摺動（摩擦）によって新生面が発生し、且つ、圧縮力が最も効率良く作用する。つまり、新生面が発生した素線１ａ間が摺動して凝着が発生し、素線１間の導通特性が向上する。第２実施形態では、凝着する範囲が拡大し、電気接続箇所の電気抵抗が更に低減する。   Specifically, in the second embodiment, as shown in FIG. 7 (b), the leading edge edge e1 of the core wire 1 is a starting point, and the leading end core wire portion E1 is compressed by a caulking force. The core wire 1 can extend to the tip side (a arrow direction). On the other hand, starting from the edge e2 on the most rear end side of the core wire 1, the core wire portion E2 on the rear end side can extend to the rear end side (in the direction of arrow b) of the core wire 1 by the compressive force of the caulking force. Elongation to the front end side (a arrow direction) of the core wire 1 is suppressed. Moreover, the core wire part E3 located between the two notches 19a and 19b extends to the front end side (a arrow direction) and the rear end side (b arrow direction) of the core wire 1 by the compressive force of the caulking force. Is suppressed. In other words, the core wire 1 of the core wire portion E2 on the rear end side is stretched while being suppressed by the compressive force, so that a new surface is generated in the core wire 1 and the core wire 1 is compressed by suppressing the stretch. Power works efficiently. Further, the core wire 1 of the core wire portion E3 at the intermediate position is sufficiently restrained from being stretched by the compressive force due to the caulking force, but a new surface is generated by sliding (friction) between the strands 1a due to the compressive force, and The compression force works most efficiently. That is, the wire 1a on which the new surface is generated slides to cause adhesion, and the conduction characteristics between the wires 1 are improved. In 2nd Embodiment, the range to adhere is expanded and the electrical resistance of an electrical connection location further reduces.

第２実施形態では、芯線圧着部１６の各加締片部１６ｂには２箇所に切欠部１９ａ，１９ｂを設けたが、３箇所以上に切欠部を設けても良い。   In the second embodiment, the crimping piece portions 16b of the core wire crimping portion 16 are provided with the notches 19a and 19b at two locations. However, the notch portions may be provided at three or more locations.

（変形例）
各実施形態では、芯線１がアルミ製であるが、本発明はアルミ製以外の芯線１（例えば銅合金製）であっても適用できる。 (Modification)
In each embodiment, the core wire 1 is made of aluminum, but the present invention can also be applied to a core wire 1 other than aluminum (for example, made of copper alloy).

各実施形態では、芯線圧着部１６の内面に設けるセレーションは、溝１８であるが、突部でも良く、又、溝と突部の両方であっても良い。   In each embodiment, the serration provided on the inner surface of the core wire crimping portion 16 is the groove 18, but may be a protrusion, or may be both a groove and a protrusion.

Ｗ 電線
１ 芯線
１ａ 素線
１０Ａ，１０Ｂ 圧着端子
１６ 芯線圧着部
１９，１９ａ，１９ｂ 切欠部 W Electric wire 1 Core wire 1a Wire 10A, 10B Crimp terminal 16 Core wire crimp part 19, 19a, 19b Notch

Claims (3)

電線の複数の素線からなる芯線を圧着する芯線圧着部を有する圧着端子であって、
前記芯線圧着部には、前記芯線の軸方向の中間位置に切欠部が設けられたことを特徴とする圧着端子。 A crimping terminal having a core wire crimping part for crimping a core wire composed of a plurality of wires of an electric wire,
The crimp terminal according to claim 1, wherein the core wire crimping portion is provided with a notch at an intermediate position in the axial direction of the core wire. 請求項１記載の圧着端子であって、
前記切欠部は、前記芯線圧着部の芯線軸方向の中央よりも前記芯線の先端側の位置に設けられたことを特徴とする圧着端子。 The crimp terminal according to claim 1,
The crimp terminal according to claim 1, wherein the cutout portion is provided at a position closer to a distal end side of the core wire than a center of the core wire crimp portion in the core wire axial direction. 請求項１又は請求項２記載の圧着端子であって、
前記切欠部は、複数箇所に設けられたことを特徴とする圧着端子。 The crimp terminal according to claim 1 or 2,
The crimp terminal, wherein the notch is provided at a plurality of locations.
JP2013210989A 2013-10-08 2013-10-08 Crimping terminal Pending JP2015076237A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9905941B2 (en) 2015-09-16 2018-02-27 Autonetworks Technologies, Ltd. Wire with crimped terminal, wire harness, and crimped terminal
DE102017218236B4 (en) 2016-10-13 2022-12-08 Yazaki Corporation Electrical wire with a terminal and method of manufacturing an electrical wire with a terminal

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965985U (en) * 1972-09-20 1974-06-10
JP2005050736A (en) * 2003-07-30 2005-02-24 Furukawa Electric Co Ltd:The Method of manufacturing terminal crimping structure to aluminum wire and aluminum wire with terminal
JP2007180009A (en) * 2005-12-02 2007-07-12 Ngk Spark Plug Co Ltd Crimp terminal, gas sensor including the crimp terminal, and method for manufacturing the crimp terminal
JP5947576B2 (en) * 2012-03-16 2016-07-06 矢崎総業株式会社 Electric wire with crimp terminal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9905941B2 (en) 2015-09-16 2018-02-27 Autonetworks Technologies, Ltd. Wire with crimped terminal, wire harness, and crimped terminal
DE102017218236B4 (en) 2016-10-13 2022-12-08 Yazaki Corporation Electrical wire with a terminal and method of manufacturing an electrical wire with a terminal

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