JP2015090742A - Crimp terminal - Google Patents

Crimp terminal Download PDF

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Publication number
JP2015090742A
JP2015090742A JP2013229140A JP2013229140A JP2015090742A JP 2015090742 A JP2015090742 A JP 2015090742A JP 2013229140 A JP2013229140 A JP 2013229140A JP 2013229140 A JP2013229140 A JP 2013229140A JP 2015090742 A JP2015090742 A JP 2015090742A
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Japan
Prior art keywords
core wire
center
crimp terminal
crimping
serrations
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JP2013229140A
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Japanese (ja)
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孝裕 松尾
Takahiro Matsuo
孝裕 松尾
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Yazaki Corp
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Yazaki Corp
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Priority to JP2013229140A priority Critical patent/JP2015090742A/en
Priority to PCT/JP2014/078953 priority patent/WO2015068639A1/en
Publication of JP2015090742A publication Critical patent/JP2015090742A/en
Abandoned legal-status Critical Current

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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
    • H01R4/188—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
    • H01R4/10—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
    • H01R4/185—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 combined with a U-shaped insulation-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
    • H01R4/58—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

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  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a crimp terminal capable of securing conduction between element wires of a core wire and reducing resistance of an entire circuit.SOLUTION: A crimp terminal 10 includes a core wire crimp part 16, having a base part 16a and a caulking piece part 16b extended from a side of the base part 16a, for crimping a core wire 1 composed of a plurality of element wires 1a of electric wires. At a surface side with which the core wire of the core wire crimp part 16 is brought in contact, a plurality of serrations 18 are provided. The plurality of serrations 18 is taper shaped in which a depth becomes deeper from a side closer to a center O toward a far side by making the center O in an axial direction C1 of the core wire as a boundary. A groove side face 18a at a far side from the center is formed to be almost a vertical surface.

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６〜図８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. 6-8, the electric wire W which connects the crimp terminal 110 is comprised from the core wire 101 which consists of several strand 101a, and the insulation skin | cover 102 which covers the outer periphery of the core wire 101. As shown in FIG. 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、三本の長溝状のセレーション１１８が形成されている。   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 groove serrations 118 are formed on the inner surface of the base portion 116a and the pair of caulking pieces 116b of the core wire crimping portion 116.

各セレーション１１８は、芯線１０１の軸方向の直交方向を長手方向として配置されている。各セレーション１１８の各溝側面１１８ａは、垂直に近い傾斜に設定されている。   Each serration 118 is arranged with the direction perpendicular to the axial direction of the core wire 101 as the longitudinal direction. Each groove side surface 118a of each serration 118 is set to an inclination close to vertical.

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 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.

この加締め過程では、加締め片部１１６ｂより芯線１０１が圧縮力を受ける。すると、図７に示すように、加締め片部１１６ｂに芯線１０１の軸方向の中心Ｏより先端側に位置する芯線１０１は、先端側（ａ矢印方向）に伸び、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）に伸びて新生面が発生する。又、芯線１０１の素線１０１ａがセレーション１１８内に入り込むことにより、芯線１０１の素線１０１ａの伸びが促進される。   In this caulking process, the core wire 101 receives a compressive force from the caulking piece portion 116b. Then, as shown in FIG. 7, the core wire 101 positioned on the distal end side from the center O in the axial direction of the core wire 101 extends to the distal end side (a arrow direction) in the crimping piece portion 116 b, and The core wire 101 located on the end side (insulating skin side) extends to the rear end side (insulating skin side) (in the direction of arrow b) to generate a new surface. Further, when the strand 101a of the core wire 101 enters the serration 118, the elongation of the strand 101a of the core wire 101 is promoted.

特開２００９−１２３６２３号公報JP 2009-123623 A 特開２０１０−１００００号公報JP 2010-10000 A

しかしながら、前記従来例では、セレーション１１８に入り込んだ素線１０１ａとセレーション１１８の内面との間に隙間ａ（図８（ｂ）に示す）が発生し、溝側面１１８ａに確実に掛からない。これにより、素線１０１ａが溝側面１１８ａに掛かることによる素線１０１ａの確実な伸びが得られず、凝着も促進されないため、芯線１０１の素線１０１ａ間の確実な導通が得られない恐れがある。   However, in the conventional example, a gap a (shown in FIG. 8B) is generated between the strand 101a entering the serration 118 and the inner surface of the serration 118, and the groove side surface 118a is not reliably hooked. As a result, the wire 101a does not stretch reliably due to the wire 101a hitting the groove side surface 118a, and adhesion is not promoted. Therefore, there is a risk that reliable conduction between the wires 101a of the core wire 101 cannot be obtained. is there.

又、図９に示すように、多数の菱形状のセレーション１１８を設けたもの（特許文献２参照）であっても、セレーション１１８に入り込んだ素線１０１ａとセレーション１１８の内面との間に隙間が発生し、前記従来例と同様に素線１０１aの十分な伸びを促進させることができず、芯線１０１の素線１０１ａ間の確実な導通が得られない発生させることができない恐れがある。   Further, as shown in FIG. 9, even in the case where a large number of rhombus-shaped serrations 118 are provided (see Patent Document 2), there is a gap between the strand 101 a entering the serration 118 and the inner surface of the serration 118. As in the case of the conventional example, it is impossible to promote sufficient elongation of the wire 101a, and there is a risk that reliable conduction between the wires 101a of the core wire 101 cannot be obtained.

芯線１０１の素線１０１ａ間の確実な導通が得られない場合には回路全体の抵抗が高くなる。芯線１０１の素線１０１ａ間の導通を確実に得る構造が望まれている。   When reliable conduction between the strands 101a of the core wire 101 cannot be obtained, the resistance of the entire circuit increases. A structure that reliably obtains conduction between the strands 101a of the core wire 101 is desired.

そこで、本発明は、芯線の素線間の導通を確実に確保でき、回路全体の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, an object of this invention is to provide the crimp terminal which can ensure the conduction | electrical_connection between the strands of a core wire reliably, and can reduce the resistance of the whole circuit.

本発明は、基底部と前記基底部の側方から延設された加締め片部を有し、電線の複数の素線からなる芯線が圧着する芯線圧着部を有する圧着端子であって、前記芯線圧着部の前記芯線が接触する面側には、複数のセレーションが複数設けられ、複数の前記セレーションは、前記芯線の軸方向の中心を境として、中心に近い側より遠い側に向かって徐々に深さが深くなるテーパ状で、且つ、中心より遠い側の溝側面がほほ垂直面に形成されていることを特徴とする圧着端子である。   The present invention is a crimp terminal having a base wire and a crimping piece portion extending from a side of the base portion, and having a core wire crimping portion to which a core wire composed of a plurality of strands of an electric wire is crimped, A plurality of serrations are provided on the surface side of the core wire crimping portion that comes into contact with the core wire, and the plurality of serrations gradually increase from the axial center of the core wire toward the side farther from the side closer to the center. The crimp terminal has a taper shape with a deeper depth, and a groove side surface farther from the center is formed on a substantially vertical surface.

複数の前記セレーションは、前記芯線の軸方向の中心を境として対称位置に配置されているものを含む。複数の前記セレーションは、前記芯線の軸方向の中心を境として、中心より遠い位置に行くに従って狭くなる間隔で配置されているものを含む。前記各セレーションは、中心より遠い側の溝側面が前記芯線の軸方向の直交方向に沿って配置された三角形であるものを含む。   The plurality of serrations include those arranged at symmetrical positions with the axial center of the core wire as a boundary. The plurality of serrations include ones arranged at intervals that become narrower toward a position farther from the center with the axial center of the core wire as a boundary. Each of the serrations includes one in which a groove side surface far from the center is a triangle arranged along a direction orthogonal to the axial direction of the core wire.

本発明によれば、加締め過程で芯線に圧縮力が作用すると、芯線の素線は、セレーションのスロープ状のテーパ面に沿ってスムーズに入り込み、且つ、伸びるため、素線とセレーションの内面との間に隙間を発生せず、中心より遠い側のほぼ垂直な溝側面に確実に掛かる。従って、素線がセレーションの溝側面に確実に掛かることによる伸びが得られ、これによって凝着も促進される。以上より、芯線の素線間の導通を確実に確保でき、回路全体の抵抗を低減できる。   According to the present invention, when a compressive force is applied to the core wire in the caulking process, the core wire smoothly enters and extends along the sloped tapered surface of the serration, and the strand and the inner surface of the serration No gap is generated between them, and it is surely hooked on the substantially vertical groove side surface farther from the center. Therefore, elongation is obtained when the wire is surely applied to the side surface of the groove of the serration, thereby promoting adhesion. From the above, the conduction between the core wires can be reliably ensured, and the resistance of the entire circuit can be reduced.

本発明の一実施形態を示し、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 an embodiment of the present invention and crimping an electric wire to a crimp terminal. 本発明の一実施形態を示し、（ａ）は電線を圧着した圧着端子の側面図、（ｂ）は芯線圧着部の縦拡大断面図、（ｃ）は（ａ）のＡ−Ａ線断面図である。1 shows an embodiment of the present invention, (a) is a side view of a crimp terminal to which a wire is crimped, (b) is a longitudinally enlarged sectional view of a core wire crimping portion, and (c) is a sectional view taken along line AA in (a). It is. 本発明の一実施形態を示し、（ａ）は芯線圧着部の展開図、（ｂ）は加締め圧着時の各位置での芯線伸び量とセレーションの間隔を説明する図、（ｃ）はセレーション内の素線に作用する応力を示す断面図である。1 shows an embodiment of the present invention, (a) is a development view of a core wire crimping part, (b) is a diagram for explaining the amount of core wire elongation and serration spacing at each position during crimping, and (c) is a serration. It is sectional drawing which shows the stress which acts on the inner strand. 本発明の一実施形態を示し、加締め治具の斜視図である。1 is a perspective view of a caulking jig according to an embodiment of the present invention. 本発明の一実施形態を示し、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 one Embodiment of this invention and demonstrates the crimping operation | work by a crimping jig. 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. 従来例を示し、芯線圧着部の縦拡大断面図、（ｂ）は（ａ）の要部拡大断面図である。A prior art example is shown, the longitudinal expanded sectional view of a core wire crimping part, (b) is the principal part expanded sectional view of (a). 他の従来例の芯線圧着部の展開図である。It is an expanded view of the core wire crimping part of another conventional example.

本発明の実施形態を図面に基づいて説明する。図１〜図５は本発明の一実施形態を示す。図１及び図２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からなり、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。   Embodiments of the present invention will be described with reference to the drawings. 1 to 5 show an embodiment of the present invention. As shown in FIG.1 and FIG.2, the electric wire W is comprised from the insulated wire 2 which covers the outer periphery of the core wire 1 which consists of several strand 1a, and the core wire 1. As shown in FIG. 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１０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１０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。   The crimp terminal 10 is made of, for example, a copper alloy, and is formed by bending a plate cut into a predetermined shape. The crimp terminal 10 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.

芯線圧着部１６の基底部１６ａと一対の加締め片部１６ｂの芯線１が接触する面（以下、内面という）側には、複数のセレーション１８が設けられている。   A plurality of serrations 18 are provided on a surface (hereinafter referred to as an inner surface) side where the base portion 16a of the core wire crimping portion 16 and the core wire 1 of the pair of caulking piece portions 16b are in contact with each other.

各セレーション１８は、同一寸法で、素線１ａが入り込むことができる寸法である。各セレーション１８は、図３（ａ）、（ｂ）に詳しく示すように、上方から見て三角形状で、中心Ｏから最も近い位置に頂点を有し、中心Ｏより遠い側の溝側面１８ａが芯線１の軸方向の直交方向Ｃ２になる向きに配置されている。そして、複数のセレーション１８は、芯線圧着部１６における、芯線１の軸方向Ｃ１の中心Ｏを境として、中心Ｏに近い側より遠い側に向かって徐々に深さが深くなるスロープ状のテーパ面で、且つ、中心Ｏより遠い側の溝側面１８ａがほほ垂直面に形成されている。   Each serration 18 has the same size and is a size that allows the strand 1a to enter. As shown in detail in FIGS. 3A and 3B, each serration 18 has a triangular shape when viewed from above, has a vertex at a position closest to the center O, and has a groove side surface 18 a farther from the center O. It arrange | positions in the direction which becomes the orthogonal direction C2 of the axial direction of the core wire 1. FIG. The plurality of serrations 18 are sloped tapered surfaces that gradually increase in depth toward the side farther from the side closer to the center O, with the center O of the core wire 1 in the axial direction C1 as the boundary. In addition, the groove side surface 18a far from the center O is formed on a substantially vertical surface.

複数のセレーション１８は、芯線１の軸方向Ｃ１とその直交方向Ｃ２に次のような規則性を持って点在されている。つまり、複数のセレーション１８は、芯線１の軸方向Ｃ１の中心Ｏを境として対称位置に配置され、芯線１の軸方向Ｃ１の中心Ｏを境として、中心Ｏより遠い位置に行くに従って狭くなる間隔で配置されている。具体的には、図３（ａ）、（ｂ）に示すように、左右対称の各セレーション１８は、芯線１の軸方向Ｃ１の中心ＯからＤ１＞Ｄ２＞Ｄ３＞Ｄ４の間隔で設定されている。   The plurality of serrations 18 are dotted with the following regularity in the axial direction C1 of the core wire 1 and the orthogonal direction C2. That is, the plurality of serrations 18 are arranged at symmetrical positions with the center O in the axial direction C1 of the core wire 1 as a boundary, and the intervals become narrower as the distance from the center O increases with the center O in the axial direction C1 of the core wire 1 as a boundary. Is arranged in. Specifically, as shown in FIGS. 3A and 3B, the symmetrical serrations 18 are set at intervals of D1> D2> D3> D4 from the center O of the core wire 1 in the axial direction C1. Yes.

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１０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 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１０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 10 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 caulking pieces 16 b are pressed from above by the caulking jig 20, the pair of caulking pieces 16 b are plastically deformed along the caulking groove 21.

この加締め過程では、芯線圧着部１６より芯線１が圧縮力を受ける。すると、加締め片部１６ｂ内にあって、芯線１の軸方向Ｃ１の中心Ｏより先端側に位置する芯線１は、先端側（図２（ｂ）のａ矢印方向）に伸び、加締め片部１６ｂの後端側（絶縁外皮側）に位置する芯線１は、後端側（絶縁外皮側）（図２（ｂ）のｂ矢印方向）に伸び、新生面が発生する。芯線１は、芯線１の素線１ａは、セレーション１８のスロープ状のテーパ面に沿ってスムーズに入り込み、且つ、伸びるため、素線１ａとセレーション１８の内面との間に隙間を発生せず、中心Ｏより遠い側のほぼ垂直な溝側面１８ａに確実に掛かる。より詳細には、図３（ｃ）に示すように、セレーション１８の上方より芯線１に作用する圧縮力Ｆは、セレーション１８のテーパ面によって芯線１の素線１ａの軸方向に分力ｆ１として作用するため、この分力ｆ１によって芯線１の素線１ａの伸びが大きくなると共に、伸びた素線１ａが溝側面１８ａに突き当たるため、素線１ａとセレーション１８の内面との間に隙間を発生せず、ほぼ垂直な溝側面１８ａに確実に掛かる。   In this caulking process, the core wire 1 receives a compressive force from the core wire crimping portion 16. Then, the core wire 1 located in the crimping piece portion 16b and located on the distal end side from the center O in the axial direction C1 of the core wire 1 extends to the distal end side (a arrow direction in FIG. 2 (b)), and the crimping piece The core wire 1 located on the rear end side (insulating skin side) of the portion 16b extends to the rear end side (insulating skin side) (in the direction of arrow b in FIG. 2B), and a new surface is generated. In the core wire 1, the strand 1 a of the core wire 1 smoothly enters and extends along the slope-shaped tapered surface of the serration 18, and thus no gap is generated between the strand 1 a and the inner surface of the serration 18. It is surely hooked on the substantially vertical groove side surface 18a farther from the center O. More specifically, as shown in FIG. 3C, the compressive force F acting on the core wire 1 from above the serration 18 is a component force f <b> 1 in the axial direction of the strand 1 a of the core wire 1 by the tapered surface of the serration 18. Because of this, the component force f1 increases the elongation of the strand 1a of the core wire 1 and the stretched strand 1a hits the groove side surface 18a, so that a gap is generated between the strand 1a and the inner surface of the serration 18. Without being hooked on the substantially vertical groove side surface 18a.

つまり、芯線１には、セレーション１８の底面がテーパであることによる伸びと、溝側面１８ａに確実に掛かることによる局部的な伸びが発生し、従来例より新生面の発生が促進され、凝着も促進される。以上より、芯線１の素線１ａ間の導通を確実に確保でき、回路全体の抵抗を低減できる。   That is, the core wire 1 is stretched by the bottom surface of the serration 18 being tapered, and is locally stretched by being surely hooked on the groove side surface 18a. Promoted. From the above, the conduction between the strands 1a of the core wire 1 can be reliably ensured, and the resistance of the entire circuit can be reduced.

芯線１の素線１ａは、セレーション１８内に隙間なく入り込むため、芯線１と芯線圧着部１６間の接触面積が増え、芯線１と芯線圧着部１６（圧着端子１０）の間の導通抵抗の低減になる。これによっても、回路全体の抵抗が低減する。又、芯線１がセレーション１８の溝側面１８ａに確実に掛かるため、芯線１と芯線圧着部１６間の引っ張り強度（機械的強度）の向上にもなる。   Since the strand 1a of the core wire 1 enters the serration 18 without a gap, the contact area between the core wire 1 and the core wire crimping portion 16 increases, and the conduction resistance between the core wire 1 and the core wire crimping portion 16 (crimp terminal 10) is reduced. become. This also reduces the resistance of the entire circuit. Further, since the core wire 1 is surely hooked on the groove side surface 18a of the serration 18, the tensile strength (mechanical strength) between the core wire 1 and the core wire crimping portion 16 is also improved.

複数のセレーション１８は、芯線圧着部１６にあって、芯線１の軸方向Ｃ１の中心Ｏを境として対称位置に配置されている。従って、芯線１の軸方向Ｃ１の中心Ｏを境として均等に互いに反対方向に芯線１が伸びるため、伸び量を促進できる。   The plurality of serrations 18 are in the core wire crimping portion 16 and are arranged at symmetrical positions with the center O in the axial direction C1 of the core wire 1 as a boundary. Therefore, since the core wire 1 extends equally in the opposite directions with respect to the center O in the axial direction C1 of the core wire 1, the amount of elongation can be promoted.

複数のセレーション１８は、芯線１の軸方向Ｃ１の中心Ｏを境として、中心Ｏより遠い位置に行くに従って狭くなる間隔で配置されている。芯線１は、図３（ｂ）にて矢印（矢印の長さは、伸び量の大きさを示す）で示すように、加締め圧着時に中心Ｏより遠い位置になるほど伸び量が多く、芯線１の伸び量に対応してセレーション１８の間隔が狭く設定されているため、凝着の効率が向上する。   The plurality of serrations 18 are arranged at intervals that become narrower toward the position farther from the center O, with the center O in the axial direction C1 of the core wire 1 as a boundary. As shown by an arrow (the length of the arrow indicates the amount of elongation) in FIG. 3B, the core wire 1 has a larger amount of elongation as it becomes farther from the center O during crimping. Since the interval between the serrations 18 is set to correspond to the amount of elongation, the adhesion efficiency is improved.

各セレーション１８は、その溝側面１８ａが芯線１の軸方向の直交方向Ｃ２になる向きに配置されている。従って、加締め圧着時に、軸方向Ｃ１に伸びる芯線１の素線１ａが確実に溝側面１８ａに強く掛かるため、芯線１の素線１ａが溝側面１８ａに掛かることによる局部的な伸び量が多くなり、新生面の発生が更に促進される。又、芯線１と芯線圧着部１６間の引っ張り強度（機械的強度）が更に向上する。   Each serration 18 is disposed in a direction in which the groove side surface 18 a is in a direction C 2 orthogonal to the axial direction of the core wire 1. Accordingly, since the element wire 1a of the core wire 1 extending in the axial direction C1 is surely strongly applied to the groove side surface 18a during crimping and crimping, the amount of local elongation due to the element wire 1a of the core wire 1 being applied to the groove side surface 18a is large. Thus, the generation of a new surface is further promoted. Further, the tensile strength (mechanical strength) between the core wire 1 and the core wire crimping portion 16 is further improved.

このように圧着端子１０の一部を設計変更することによって、圧着箇所における芯線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圧着箇所の電気抵抗を低減できる。   By changing the design of a part of the crimp terminal 10 in this way, it is possible to improve the conduction characteristics of the core wire 1 at the crimping part, so that the electrical resistance at the crimping part is reduced with almost no cost increase compared to the single wire etc. it can.

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硬い。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。   The core wire 1 is made of aluminum. The aluminum wire 1a has a harder 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.

実施形態では、セレーション１８は、三角形状であるが、どのような形状（例えば、四角形状（菱形を含む）、長溝形状、同心円形状）であっても良い。又、三角形は、正三角形、二等辺三角形等の形状を問わない。   In the embodiment, the serration 18 has a triangular shape, but may have any shape (for example, a rectangular shape (including rhombus), a long groove shape, or a concentric circular shape). The triangle may be in any shape such as a regular triangle or an isosceles triangle.

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。   In the 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).

Ｗ 電線
１ 芯線
１ａ 素線
１０ 圧着端子
１６ 芯線圧着部
１６ａ 基底部
１６ｂ 加締め片部
１８ セレーション
１８ａ 溝側面 W electric wire 1 core wire 1a element wire 10 crimp terminal 16 core wire crimp portion 16a base portion 16b crimping piece portion 18 serration 18a groove side surface

Claims (4)

基底部と前記基底部の側方から延設された加締め片部を有し、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、
前記芯線圧着部の前記芯線が接触する面側には、複数のセレーションが複数設けられ、複数の前記セレーションは、前記芯線の軸方向の中心を境として、中心に近い側より遠い側に向かって徐々に深さが深くなるテーパ状で、且つ、中心より遠い側の溝側面がほほ垂直面に形成されていることを特徴とする圧着端子。 A crimping terminal having a base wire and a crimping piece portion extending from the side of the base portion, and having a core wire crimping portion for crimping a core wire composed of a plurality of strands of an electric wire,
A plurality of serrations are provided on the surface side of the core wire crimping portion that contacts the core wires, and the plurality of serrations toward the side farther from the side closer to the center with the center in the axial direction of the core wire as a boundary. A crimp terminal having a tapered shape with a gradually increasing depth, and a groove side surface farther from the center formed on a substantially vertical surface. 請求項１記載の圧着端子であって、
複数の前記セレーションは、前記芯線の軸方向の中心を境として対称位置に配置されていることを特徴とする圧着端子。 The crimp terminal according to claim 1,
The crimp terminal, wherein the plurality of serrations are arranged at symmetrical positions with an axial center of the core wire as a boundary. 請求項２記載の圧着端子であって、
複数の前記セレーションは、前記芯線の軸方向の中心を境として、中心より遠い位置に行くに従って狭くなる間隔で配置されていることを特徴とする圧着端子。 The crimp terminal according to claim 2,
The plurality of serrations are arranged at intervals that become narrower toward a position farther from the center with the center in the axial direction of the core wire as a boundary. 請求項１〜請求項３のいずれかに記載の圧着端子であって、
前記各セレーションは、中心より遠い側の前記溝側面が前記芯線の軸方向の直交方向に沿って配置された三角形であることを特徴とする圧着端子。 The crimp terminal according to any one of claims 1 to 3,
Each serration is a crimp terminal characterized in that the groove side surface on the side farther from the center is a triangle arranged along the direction perpendicular to the axial direction of the core wire.
JP2013229140A 2013-11-05 2013-11-05 Crimp terminal Abandoned JP2015090742A (en)

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JP2009176672A (en) * 2008-01-28 2009-08-06 Yazaki Corp Aluminum wire crimp terminal
JP2009176673A (en) * 2008-01-28 2009-08-06 Yazaki Corp Crimp terminal for aluminum electric wire
JP2009193891A (en) * 2008-02-15 2009-08-27 Autonetworks Technologies Ltd Terminal fitting, and wire harness
JP2010055931A (en) * 2008-08-28 2010-03-11 Autonetworks Technologies Ltd Terminal metal fitting and electric wire with terminal metal fitting

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US3735331A (en) * 1972-04-19 1973-05-22 Ark Les Switch Corp Electrical connector
JPS5166792U (en) * 1974-11-21 1976-05-26
JPH10125362A (en) * 1996-10-21 1998-05-15 Yazaki Corp Terminal fitting
JP2009176672A (en) * 2008-01-28 2009-08-06 Yazaki Corp Aluminum wire crimp terminal
JP2009176673A (en) * 2008-01-28 2009-08-06 Yazaki Corp Crimp terminal for aluminum electric wire
JP2009193891A (en) * 2008-02-15 2009-08-27 Autonetworks Technologies Ltd Terminal fitting, and wire harness
JP2010055931A (en) * 2008-08-28 2010-03-11 Autonetworks Technologies Ltd Terminal metal fitting and electric wire with terminal metal fitting

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