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WO2015068639A1 - 圧着端子 - Google Patents

圧着端子 Download PDF

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Publication number
WO2015068639A1
WO2015068639A1 PCT/JP2014/078953 JP2014078953W WO2015068639A1 WO 2015068639 A1 WO2015068639 A1 WO 2015068639A1 JP 2014078953 W JP2014078953 W JP 2014078953W WO 2015068639 A1 WO2015068639 A1 WO 2015068639A1
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WO
WIPO (PCT)
Prior art keywords
core wire
center
crimp terminal
serration
serrations
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/JP2014/078953
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English (en)
French (fr)
Inventor
孝裕 松尾
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Yazaki Corp
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Yazaki Corp
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Filing date
Publication date
Application filed by Yazaki Corp filed Critical Yazaki Corp
Publication of WO2015068639A1 publication Critical patent/WO2015068639A1/ja
Anticipated expiration legal-status Critical
Ceased 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

Definitions

  • the present invention relates to a crimp terminal for connecting to an electric wire.
  • the electric wire W connected to the crimp terminal 110 of the first conventional example includes a core wire 101 composed of a plurality of strands 101a 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.
  • the crimp terminal 110 includes 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 includes 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.
  • Each serration 118 is disposed with the orthogonal direction of 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.
  • the outer skin crimping part 117 includes a base part 117a and a pair of caulking piece parts 117b extending from both sides of the base part 117a.
  • 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.
  • 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 FIG. 7). The core wire 101 located on the rear end side (insulating skin side) 116b extends to the rear end side (insulating skin side) (in the direction of arrow b in FIG. 7) 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.
  • JP 2009-123623 A JP 2009-123623 A
  • JP2010-10000A JP 2010-010000 A
  • a gap a (see 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.
  • 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.
  • an object of the present invention is to provide a crimp terminal that can reliably ensure conduction between the core wires and can reduce the resistance of the entire circuit.
  • the crimp terminal includes a base part and a crimped piece part extending from the side of the base part, and includes a core crimp part that can be crimped to a core made of a plurality of strands of the electric wire.
  • a plurality of serrations are provided on the side of the core wire crimping portion that contacts the core wire.
  • Each serration has a tapered shape in which the depth is gradually increased toward the side farther from the side closer to the center of the core wire crimping portion at the center in the axial direction of the core wire, and the groove side surface farther from the center Is formed on a substantially vertical surface.
  • the serrations may be arranged at symmetrical positions with the center in the axial direction of the core wire in the core wire crimping portion as a boundary.
  • the serrations may be arranged at intervals that become narrower toward the position farther away from the center of the core wire crimping portion in the axial direction of the core wire.
  • Each serration may be a triangle in which the groove side surface far from the center is arranged along the direction orthogonal to the axial direction of the core wire.
  • the crimp terminal according to the aspect of the present invention when a compressive force is applied to the core wire in the caulking process, the strand of the core wire smoothly enters and extends along the sloped tapered surface of the serration. For this reason, a gap is not generated between the strand and the inner surface of the serration, but it is surely hooked on the substantially vertical groove side surface on the side 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. As described above, the crimp terminal according to the aspect of the present invention can reliably ensure conduction between the core wires, and can reduce the resistance of the entire circuit.
  • FIG. 1 is a perspective view of a state before an electric wire is crimped to a crimp terminal according to the embodiment.
  • 2A is a side view of a state where an electric wire is crimped to a crimp terminal according to the embodiment
  • FIG. 2B is a longitudinally enlarged cross-sectional view of the core wire crimping portion of FIG. 2A
  • FIG. FIG. 2 is a cross-sectional view taken along line AA in FIG.
  • FIG. 3A is a development view of the core wire crimping portion of the crimp terminal according to the embodiment
  • FIG. 3B illustrates the core wire extension amount and the serration interval at each position when the crimp terminal according to the embodiment is crimped.
  • FIG. 4 is a perspective view of a crimping jig used for the crimp terminal according to the embodiment.
  • FIG. 5 is a side view for explaining the crimping operation by the crimping jig for the crimp terminal according to the embodiment.
  • FIG. 6 is a perspective view before the electric wire is crimped to the crimp terminal of the first conventional example.
  • FIG. 7 is a side view of a state in which an electric wire is crimped to the crimp terminal of the first conventional example.
  • FIG. 8A is a longitudinally enlarged sectional view of a core wire crimping part of the crimp terminal of the first conventional example
  • FIG. 8B is an enlarged sectional view of a main part of FIG. 8A
  • FIG. 9 is a development view of the core wire crimping portion of the crimp terminal of the second conventional example.
  • 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.
  • the crimp terminal 10 is made of, for example, a copper alloy.
  • the crimp terminal 10 is formed by bending a plate cut into a predetermined shape.
  • the crimp terminal 10 includes a mating terminal connection portion 11 and a wire connection portion 15.
  • the wire connection portion 15 includes a core wire crimping portion 16 and an outer skin crimping portion 17.
  • the core wire crimping portion 16 includes a base portion 16a and a pair of caulking piece portions 16b extending from both sides of the base portion 16a.
  • 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 contact each other.
  • each serration 18 has the same dimensions and can accommodate the strands 1a. 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 is a groove side surface 18 a farther from the center O. Are arranged in a direction that is perpendicular to the axial direction C2 of the core wire 1. Each serration 18 is a slope-shaped taper surface that gradually becomes deeper toward the side farther from the side closer to the center O, with the center O in the axial direction C1 of the core wire 1 in the core wire crimping portion 16 as a boundary, and The groove side surface 18a far from the center O is formed in a substantially vertical plane.
  • the plurality of serrations 18 are interspersed 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. ing.
  • the outer skin crimping portion 17 includes a base portion 17a and a pair of caulking piece portions 17b extending from both sides of the base portion 17a.
  • 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.
  • the crimp terminal 10 is crimped by a crimping jig 20 as 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.
  • 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.
  • the strand 1a of the core wire 1 smoothly enters and extends along the slope-shaped tapered surface of the serration 18, and therefore does not generate a gap between the strand 1a and the inner surface of the serration 18, and is far from the center O. It is securely hooked to the substantially vertical groove side surface 18a on the side. 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.
  • 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.
  • 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, it is possible to reliably ensure conduction between the strands 1a of the core wire 1 and to reduce the resistance of the entire circuit.
  • 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.
  • 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.
  • 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.
  • Each serration 18 is arranged in a direction in which the groove side surface 18a becomes a direction C2 orthogonal to the axial direction of the core wire 1. Accordingly, since the strand 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 strand 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.
  • 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 embodiment, the conduction resistance between the strands 1a can be reduced. is there.
  • the serration 18 has a triangular shape, but may have any shape (for example, a quadrangular shape (including a 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.
  • the core wire 1 is made of aluminum, but the core wire 1 other than aluminum may be applicable (for example, made of copper alloy).
  • the crimp terminal which can ensure reliably the conduction

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

Abstract

　圧着端子（１０）は、基底部（１６ａ）と基底部（１６ａ）の側方から延設された加締め片部（１６ｂ）とを有し、電線（Ｗ）の複数の素線（１ａ）からなる芯線（１）に圧着可能な芯線圧着部（１６）を備える。芯線圧着部（１６）の芯線が接触する面側には、複数のセレーション（１８）が複数設けられる。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テーパ状で、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る。

Description

圧着端子
　本発明は、電線に接続するための圧着端子に関する。
　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―８に示すように、第１従来例の圧着端子１１０に接続される電線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とを備える。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。
　圧着端子１１０は、相手端子接続部１１１と、電線接続部１１５とを備える。電線接続部１１５は、芯線圧着部１１６と、外皮圧着部１１７とを備える。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とを備える。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、３本の長溝状のセレーション１１８が形成されている。
　各々のセレーション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。各々のセレーション１１８の各溝側面１１８ａは、垂直に近い傾斜に設定されている。
　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とを備える。
　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。
　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（図７の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）（図７の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。
特開２００９－１２３６２３号公報(JP 2009-123623 A) 特開２０１０－１００００号公報(JP 2010-010000 A)
　しかしながら、第１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）参照）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。
　又、図９に示す第２従来例のように、多数の菱形状のセレーション１１８を設けた圧着端子（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、第１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。
　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。そのため、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。
　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。
　本発明の態様に係る圧着端子は、基底部と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に圧着可能な芯線圧着部を備える。芯線圧着部の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る。各々のセレーションは、芯線圧着部における芯線の軸方向の中心を境として、この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。
　セレーションは、芯線圧着部における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てもよい。セレーションは、芯線圧着部における芯線の軸方向の中心を境として、この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てもよい。各々のセレーションは、中心より遠い側の溝側面が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ってもよい。
　本発明の態様に係る圧着端子によれば、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。このため、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、本発明の態様に係る圧着端子は、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することができる。
図１は、実施形態に係る圧着端子に電線を圧着する前の状態の斜視図である。 図２（ａ）は実施形態に係る圧着端子に電線を圧着した状態の側面図、図２（ｂ）は図２（ａ）の芯線圧着部の縦拡大断面図、図２（ｃ）は図２（ａ）のＡ－Ａ線断面図である。 図３（ａ）は実施形態に係る圧着端子の芯線圧着部の展開図、図３（ｂ）は実施形態に係る圧着端子の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、図３（ｃ）は実施形態に係る圧着端子の圧着時の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。 図４は、実施形態に係る圧着端子に用いる加締め治具の斜視図である。 図５は、実施形態に係る圧着端子の加締め治具による加締め作業を説明する側面図である。 図６は、第１従来例の圧着端子に電線を圧着する前の斜視図である。 図７は、第１従来例の圧着端子に電線を圧着した状態の側面図である。 図８（ａ）は第１従来例の圧着端子の芯線圧着部の縦拡大断面図、図８（ｂ）は図８（ａ）の要部拡大断面図である。 図９は、第２従来例の圧着端子の芯線圧着部の展開図である。
　実施形態に係る圧着端子について図１－５に基づいて説明する。図１、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とを備える。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。
　圧着端子１０は、例えば、銅合金製である。圧着端子１０は、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とを備える。電線接続部１５は、芯線圧着部１６と、外皮圧着部１７とを備える。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とを備える。
　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とが接触する面（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。
　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）、３（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。各々のセレーション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。
　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）、３（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。
　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とを備える。
　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。
　圧着端子１０は、図４に示すような、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。
　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。
　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することができる。
　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。
　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。
　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。
　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。
　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。
　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、実施形態では、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。
　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。
　実施形態では、芯線１がアルミ製であるが、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。
　本発明によれば、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ができる。
 

Claims (4)

  1. 　圧着端子であって、
    　基底部と前記基底部の側方から延設された加締め片部とを有し、電線の複数の素線からなる芯線に圧着可能な芯線圧着部を備え
    　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、
    　各々の前記セレーションは、前記芯線圧着部における前記芯線の軸方向の中心を境として、前記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、前記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。
  2. 　請求項１に記載の圧着端子であって、
    　前記セレーションは、前記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。
  3. 　請求項２に記載の圧着端子であって、
    　前記セレーションは、前記中心を境として、前記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。
  4. 　請求項１―３のいずれか一項に記載の圧着端子であって、
    　各々の前記セレーションは、前記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。
     
PCT/JP2014/078953 2013-11-05 2014-10-30 圧着端子 Ceased WO2015068639A1 (ja)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109792126A (zh) * 2016-09-14 2019-05-21 Seg汽车德国有限公司 电的转子和用于在转子绕组与接触金属箍之间提供电接触的方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735331A (en) * 1972-04-19 1973-05-22 Ark Les Switch Corp Electrical connector
JPS5166792U (ja) * 1974-11-21 1976-05-26
JPH10125362A (ja) * 1996-10-21 1998-05-15 Yazaki Corp 端子金具
JP2009176672A (ja) * 2008-01-28 2009-08-06 Yazaki Corp アルミ電線用圧着端子
JP2009176673A (ja) * 2008-01-28 2009-08-06 Yazaki Corp アルミ電線用圧着端子
JP2009193891A (ja) * 2008-02-15 2009-08-27 Autonetworks Technologies Ltd 端子金具及びワイヤーハーネス
JP2010055931A (ja) * 2008-08-28 2010-03-11 Autonetworks Technologies Ltd 端子金具及び端子金具付き電線

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735331A (en) * 1972-04-19 1973-05-22 Ark Les Switch Corp Electrical connector
JPS5166792U (ja) * 1974-11-21 1976-05-26
JPH10125362A (ja) * 1996-10-21 1998-05-15 Yazaki Corp 端子金具
JP2009176672A (ja) * 2008-01-28 2009-08-06 Yazaki Corp アルミ電線用圧着端子
JP2009176673A (ja) * 2008-01-28 2009-08-06 Yazaki Corp アルミ電線用圧着端子
JP2009193891A (ja) * 2008-02-15 2009-08-27 Autonetworks Technologies Ltd 端子金具及びワイヤーハーネス
JP2010055931A (ja) * 2008-08-28 2010-03-11 Autonetworks Technologies Ltd 端子金具及び端子金具付き電線

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109792126A (zh) * 2016-09-14 2019-05-21 Seg汽车德国有限公司 电的转子和用于在转子绕组与接触金属箍之间提供电接触的方法

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