JP5017156B2 - Crimping method of terminal to electric wire - Google Patents

Crimping method of terminal to electric wire Download PDF

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JP5017156B2
JP5017156B2 JP2008075716A JP2008075716A JP5017156B2 JP 5017156 B2 JP5017156 B2 JP 5017156B2 JP 2008075716 A JP2008075716 A JP 2008075716A JP 2008075716 A JP2008075716 A JP 2008075716A JP 5017156 B2 JP5017156 B2 JP 5017156B2
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crimping
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electric wire
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JP2009231079A (en
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康路 桑山
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矢崎総業株式会社
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description

本発明は、特にアルミニウム電線に対して端子を圧着する場合に有効な圧着方法に関するものである。   The present invention relates to a crimping method effective particularly when crimping a terminal to an aluminum electric wire.

自動車用のワイヤーハーネスに使用されている電線は、従来では一般的に銅電線であったが、最近では、軽量性やリサイクル性の良さからアルミニウム電線に置き換える動きがある。   Conventionally, the electric wire used for the wire harness for automobiles is generally a copper electric wire, but recently, there is a movement to replace it with an aluminum electric wire because of its light weight and good recyclability.

アルミニウムは、銅に比べて、導電率が60%程度であるが、重さが1/3ですむので、大幅な軽量化が期待できるからである。また、銅の融点は1083℃であるのに対し、アルミニウムの融点は660℃であるので、金属回収しやすい利点もあるからである。   This is because aluminum has a conductivity of about 60% as compared with copper, but the weight only needs to be 1/3, so that significant weight reduction can be expected. Further, the melting point of copper is 1083 ° C., whereas the melting point of aluminum is 660 ° C., so that there is an advantage that the metal can be easily recovered.

自動車用のワイヤーハーネスの電線をアルミニウム電線にした場合、特にアルミニウムやアルミニウム合金製の導体部の表面に、強固で電気抵抗の大きい酸化被膜が存在することが、端子を接続する上での問題となることがある。   When the wire of an automobile wire harness is made of an aluminum wire, there is a problem in connecting terminals that there is a strong oxide film with high electrical resistance, especially on the surface of the conductor made of aluminum or aluminum alloy. May be.

図4は、特許文献1に記載されたアルミニウム電線21とアルミニウム端子30を圧着接続する場合の一般的な例を示している。端子30は、前部に孔31a付きの接続板部31を持ち、後部に圧着部32を持つ。圧着部32は、底板33と、該底板33の幅方向両側縁から上に延設された一対の圧着片34、34とを持つU字形状をなしており、内面にセレーション35を有する。アルミニウム電線21は、撚線等よりなる導体部22の外周を絶縁被覆23で覆ったもので、端子30を圧着する際には、皮剥きした電線21の端末の露出導体22を底板33の上に挿入し、両側の圧着片34を加締装置で内側に曲げて、導体部32を包み込むように加締める。それにより、導体部22に端子30を圧着接続することができる。   FIG. 4 shows a general example in the case where the aluminum electric wire 21 and the aluminum terminal 30 described in Patent Document 1 are connected by crimping. The terminal 30 has a connection plate part 31 with a hole 31a at the front part and a crimping part 32 at the rear part. The crimping portion 32 has a U-shape having a bottom plate 33 and a pair of crimping pieces 34, 34 extending upward from both lateral edges of the bottom plate 33, and has a serration 35 on the inner surface. The aluminum electric wire 21 is obtained by covering the outer periphery of a conductor portion 22 made of stranded wire or the like with an insulating coating 23. When crimping the terminal 30, the exposed conductor 22 at the end of the peeled electric wire 21 is placed on the bottom plate 33. The crimping pieces 34 on both sides are bent inward by a crimping device and crimped so as to wrap the conductor portion 32. Thereby, the terminal 30 can be crimped to the conductor portion 22.

このように、従来では、圧着部32の内面にセレーション35を形成することによって、圧着時に導体部22の表面の酸化被膜を破壊するようにしている。また、導体部22の表面の酸化被膜を破壊する効果を一層増すために、このセレーション35を斜めに形成することも、特許文献1において提案されている。   Thus, conventionally, by forming serrations 35 on the inner surface of the crimping part 32, the oxide film on the surface of the conductor part 22 is destroyed during crimping. Further, in order to further increase the effect of destroying the oxide film on the surface of the conductor portion 22, it is proposed in Patent Document 1 to form the serration 35 obliquely.

また、導体部の表面の酸化被膜を破壊しながら端子を圧着する方法として、特許文献2には、電線の導体部に端子の圧着部をセットした状態で、超音波振動を付与して導体部と端子を金属接合させつつ、端子の圧着部を加締めにより導体部に圧着する方法が提案されている。
特開2003−249284号公報 特開2003−86259号公報
In addition, as a method of crimping a terminal while destroying an oxide film on the surface of the conductor portion, Patent Document 2 discloses that the conductor portion is provided with ultrasonic vibration in a state where the crimp portion of the terminal is set on the conductor portion of the electric wire. A method has been proposed in which the crimping portion of the terminal is crimped to the conductor portion by caulking while the terminal is metal-joined.
JP 2003-249284 A JP 2003-86259 A

ところで、特許文献1に記載の技術は、セレーションを有する端子の板面に接触しながら導体部が伸びる際の摺動によって、導体部の表面の酸化被膜を除去するものであるため、電線の導体部を構成する素線と素線の接触面間に存在する酸化被膜の問題を解消ことはできなかった。即ち、導体部を構成する素線と素線の接触面にも酸化被膜が存在するが、特に太物電線の場合は、この素線間の酸化被膜が障害となって、端子を圧着した際の接続抵抗が小さくならないという問題があった。素線間の抵抗が大きいと、大電流を流す太物電線(例えば、30sq以上の電線)の場合、素線間の抵抗で端子の接続部の温度が上昇し、最悪の場合は溶損という事態にもつながるおそれがある。特に、アルミニウム電線の場合は、アルミニウムが銅に比べて熱伝導率が低いために放熱性が悪いという問題があり、素線間の抵抗を無視できないという事情がある。   By the way, since the technique of patent document 1 removes the oxide film on the surface of a conductor part by the sliding at the time of a conductor part extending, contacting the board surface of a terminal which has a serration, the conductor of an electric wire The problem of the oxide film existing between the contact surfaces of the strands constituting the part could not be solved. In other words, an oxide film is also present on the contact surface between the wires constituting the conductor part, but particularly in the case of thick wires, the oxide film between the wires becomes an obstacle and the terminal is crimped. There was a problem that the connection resistance was not reduced. When the resistance between the strands is large, in the case of a thick wire (for example, 30 sq or more) that carries a large current, the resistance between the strands raises the temperature of the terminal connection, and in the worst case, it is called erosion. There is also a risk of a situation. In particular, in the case of an aluminum electric wire, there is a problem that the heat conductivity is poor because aluminum has a lower thermal conductivity than copper, and the resistance between the wires cannot be ignored.

この点、特許文献2に記載の技術によれば、超音波振動の印加によって、素線間を金属接合させることができるので、素線間の抵抗の問題を無くすことができる。   In this regard, according to the technique described in Patent Document 2, since the strands can be metal-bonded by applying ultrasonic vibration, the problem of resistance between the strands can be eliminated.

しかしながら、加圧による圧着と同時に超音波振動を印加するので、素線間に有効な振動を起こさせるのに必要なエネルギーが非常に大きくなり、太物電線に適用するのには無理があった。   However, since ultrasonic vibration is applied simultaneously with pressure bonding, the energy required to cause effective vibration between the wires becomes very large, making it impossible to apply to thick wires. .

本発明は、上記事情を考慮し、太物電線に適用した場合にも、小さなエネルギーの超音波振動を加えることにより、電線の導体部を構成する素線間の抵抗を有効に低減することのできる圧着方法を提供することを目的とする。   In consideration of the above circumstances, the present invention effectively reduces the resistance between the strands constituting the conductor portion of the electric wire by applying ultrasonic vibration with a small energy even when applied to a thick electric wire. It aims at providing the crimping method which can be performed.

請求項1の発明の電線に対する端子の圧着方法は、端子の圧着部を、多数の素線の束よりなる電線の導体部に対して、外側から包み込むように圧着する電線に対する端子の圧着方法において、前記電線の導体部を単体のまま超音波接合機にセットし、該超音波接合機により前記導体部に超音波振動を加えることで、前記導体部を構成している素線と素線の接触面間に摺動を起こさせて、素線の表面を粗にする予備工程を実行した後、前記導体部の外周に前記端子の圧着部を加圧により圧着する本工程を実行することを特徴とする。   The method for crimping a terminal to an electric wire according to the invention of claim 1 is a method for crimping a terminal against an electric wire, wherein the crimping portion of the terminal is crimped so as to be wrapped from the outside with respect to the conductor portion of the electric wire formed of a bundle of many strands. The conductor portion of the electric wire is set in an ultrasonic bonding machine as a single unit, and ultrasonic vibration is applied to the conductor portion by the ultrasonic bonding machine, so that the wire constituting the conductor portion and the wire After performing the preliminary step of causing the sliding between the contact surfaces to roughen the surface of the wire, performing this step of pressing the crimp portion of the terminal to the outer periphery of the conductor portion by pressurization. Features.

請求項2の発明は、請求項1に記載の電線に対する端子の圧着方法であって、前記予備工程にて、表面を粗にした素線と素線の接触面間が予備的に接合するまで超音波振動を加えることを特徴とする。   Invention of Claim 2 is the crimping method of the terminal with respect to the electric wire of Claim 1, Comprising: In the said preliminary | backup process, between the contact surface of the strand which roughened the surface and the strand is preliminarily joined It is characterized by applying ultrasonic vibration.

請求項3の発明は、請求項1または2に記載の電線に対する端子の圧着方法であって、前記素線が、アルミニウムあるいはアルミニウム合金よりなる非メッキ素線であることを特徴とする。   A third aspect of the invention is a method for crimping a terminal against an electric wire according to the first or second aspect, wherein the strand is a non-plated strand made of aluminum or an aluminum alloy.

請求項1の発明によれば、素線同士の接触表面を超音波振動の印加によって粗にする予備工程と、電線の導体部に端子を加圧により圧着する本工程とを別に行うので、予備工程において、小さなエネルギーの超音波振動を加えるだけで、表面を粗にするのに必要な有効な摺動を素線間に起こさせることができる。即ち、従来のように、端子を加圧圧着する工程で同時に超音波振動を印加する場合は、端子による拘束が効いた状態での摺動となるために、大きな超音波エネルギーが必要となっていたが、本発明では、端子を圧着する時点ではなくて、端子を接合する前の時点で、つまり素線に対して全く拘束がない自由な状態で、素線間に摺動を起こさせので、太物電線の場合であっても、小さなエネルギーで超音波振動により素線間に摺動を起こして、素線の表面を粗にすることが可能となる。従って、表面を粗にした状態で、本工程の加圧圧着を行うことにより、酸化被膜を破りながら、端子と電線の導体部の間の凝着性や素線と素線の間の凝着性を高めることができる。その結果、接続部の抵抗を低減することができて、それにより、大電流が流れた場合の温度上昇を回避することができる。このことは、銅に比べて熱伝導率の低いアルミの場合に特に有用なことと言える。また、小さなエネルギーの超音波振動を加えるだけでよいので、製造上の負担を軽くすることもできる。   According to the first aspect of the present invention, the preliminary step of roughening the contact surfaces of the strands by applying ultrasonic vibration and the main step of pressing the terminal to the conductor portion of the electric wire by pressurization are performed separately. In the process, the effective sliding required for roughening the surface can be caused between the strands only by applying a small energy ultrasonic vibration. That is, when ultrasonic vibration is simultaneously applied in the process of press-bonding the terminal as in the conventional case, a large amount of ultrasonic energy is required because sliding is performed in a state in which the terminal is restrained. However, in the present invention, the sliding between the strands is caused not at the time of crimping the terminals but before the joining of the terminals, that is, in a free state where there is no constraint on the strands. Even in the case of a thick electric wire, it is possible to cause the surface of the wire to be rough by sliding between the wires by ultrasonic vibration with small energy. Therefore, by pressing and pressing in this step with the surface roughened, the adhesion between the terminal and the conductor part of the wire and the adhesion between the strand and the strand while breaking the oxide film Can increase the sex. As a result, it is possible to reduce the resistance of the connection portion, thereby avoiding an increase in temperature when a large current flows. This can be said to be particularly useful in the case of aluminum, which has a lower thermal conductivity than copper. Moreover, since it is only necessary to apply ultrasonic vibration with a small energy, the manufacturing burden can be reduced.

請求項2の発明によれば、予備工程の段階において、表面を粗にした素線と素線の接触面間を予備的に接合するので、素線間の接触抵抗をより小さくすることができる。   According to the second aspect of the present invention, the contact surface between the strands whose surfaces are roughened and the strands are preliminarily joined in the preliminary process stage, so that the contact resistance between the strands can be further reduced. .

請求項3の発明によれば、アルミニウム電線と端子を圧着する場合に特に有効性を発揮することができる。即ち、アルミニウム電線の場合は、アルミニウムあるいはアルミニウム合金製の素線の表面に強固な酸化被膜が存在し、それが接続抵抗を小さくする上での阻害要因となっているが、素線の表面を粗にした状態で圧着するので、その酸化被膜の影響を排除しながら、小さい電気接続抵抗で端子とアルミニウム電線を接続することができる。   According to the invention of claim 3, the effectiveness can be exhibited particularly when the aluminum electric wire and the terminal are crimped. That is, in the case of an aluminum electric wire, a strong oxide film exists on the surface of the aluminum or aluminum alloy wire, which is an obstacle to reducing the connection resistance. Since crimping is performed in a rough state, the terminal and the aluminum electric wire can be connected with a small electric connection resistance while eliminating the influence of the oxide film.

以下、本発明の実施形態を図面を参照して説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図1(a)〜(c)は実施形態の圧着方法の工程説明図、図2は予備工程の原理説明図で、図2(a)は超音波振動を加えているときの電線の導体部を正面から見た図、図2(b)は同側面から見た図、図3は本工程による効果の説明用の模式図で、図3(a)は表面を特に粗にしないで圧着を行った場合の圧着作業中の図(左図)と圧着後の図(右図)、図3(b)は表面を粗にした上で圧着を行った場合の圧着作業中の図(左図)と圧着後の図(右図)である。   1A to 1C are process explanatory views of the crimping method according to the embodiment, FIG. 2 is a principle explanatory view of a preliminary process, and FIG. 2A is a conductor portion of an electric wire when ultrasonic vibration is applied. 2B is a diagram seen from the same side, FIG. 3 is a schematic diagram for explaining the effect of this process, and FIG. 3A is a diagram showing that the surface is not particularly roughened. Figure (left figure) during crimping operation when done, figure after right crimping (right figure), and Fig. 3 (b) are figures during crimping work after roughing the surface (left figure) ) And the figure after crimping (right figure).

本実施形態の圧着方法は、自動車に使用するワイヤーハーネス用のアルミニウム電線に対して銅製またはアルミ製のアルミ電線用圧着端子(端子)を圧着する場合の方法である。図1(a)に示すように、アルミニウム電線1は、アルミニウムまたはアルミニウム合金製の非メッキ素線2を複数本撚り合わせて構成した導体部2の外周に絶縁被覆4を被せたものである。   The crimping method of this embodiment is a method in the case of crimping a copper or aluminum aluminum wire crimp terminal (terminal) to an aluminum wire for a wire harness used in an automobile. As shown to Fig.1 (a), the aluminum electric wire 1 covers the outer periphery of the conductor part 2 comprised by twisting the non-plating strand 2 made from aluminum or aluminum alloy, and covered the insulation coating 4. As shown in FIG.

本圧着方法では、最初の工程で、図1(a)に示すように、電線1の端末部の絶縁被覆4を皮剥きして、導体部2を必要長さだけ露出させる。   In this crimping method, in the first step, as shown in FIG. 1A, the insulating coating 4 at the end of the electric wire 1 is peeled off to expose the conductor 2 by a required length.

次に、予備工程で、図2に示すように、超音波接合機7のホーン8とアンビル9の間に、電線1の導体部2を単体のままにセットし、超音波接合機7により導体部2に超音波振動を加えることで、導体部2を構成している素線3と素線3の接触面間に摺動(凝着)を起こさせて、素線3の表面を粗にする。   Next, in a preliminary process, as shown in FIG. 2, the conductor portion 2 of the electric wire 1 is set as it is between the horn 8 and the anvil 9 of the ultrasonic bonding machine 7, and the ultrasonic bonding machine 7 conducts the conductor. By applying ultrasonic vibration to the part 2, sliding (adhesion) is caused between the contact surfaces of the strand 3 and the strand 3 constituting the conductor portion 2, thereby roughening the surface of the strand 3. To do.

この際、超音波振動の向きは、図2(a)中に矢印Aで示すように、導体部2の長手方向に直交する向きに設定してもよいし、図2(b)中に矢印Bで示すように、導体部2の長手方向に沿った向きに設定してもよいし、その両方の向きに設定してもよい。   At this time, the direction of the ultrasonic vibration may be set to a direction orthogonal to the longitudinal direction of the conductor portion 2 as indicated by an arrow A in FIG. 2A, or an arrow in FIG. As indicated by B, it may be set in the direction along the longitudinal direction of the conductor portion 2 or may be set in both directions.

次に、上述の予備工程を実行した後に、導体部2の外周にアルミ電線用圧着端子としての端子10の圧着部12を加圧により圧着する本工程を実行することで、図1(c)に示すような圧着後の完成品を得る。この端子10は、前部に孔11a付きの接続板部11を持ち、後部に圧着部12を持つもので、圧着部12は、接続板部11から連続する底板13と、該底板13の幅方向両側縁から上に延設された一対の圧着片14、14とを持つU字形状をなしている。   Next, after performing the preliminary step described above, the present step of crimping the crimping portion 12 of the terminal 10 as the crimping terminal for the aluminum wire to the outer periphery of the conductor portion 2 by pressurization is performed, whereby FIG. A finished product after crimping as shown in FIG. This terminal 10 has a connecting plate part 11 with a hole 11a in the front part and a crimping part 12 in the rear part. The crimping part 12 includes a bottom plate 13 continuous from the connecting plate part 11, and the width of the bottom plate 13. It has a U-shape with a pair of crimping pieces 14 and 14 extending upward from both side edges in the direction.

本工程では、この端子10の圧着部12の底板13の上に、図1(b)に示す予備的に接合した導体部2を載せ、その状態で両圧着片14を内側に丸めてB型に加締めることで、圧着を完了する。   In this step, the preliminarily joined conductor portion 2 shown in FIG. 1B is placed on the bottom plate 13 of the crimping portion 12 of the terminal 10, and in this state, both crimping pieces 14 are rolled inward to form the B type. Crimping is completed by crimping.

図3は、圧着による素線間の接合状態の違いを示す模式図で、図3(a)は表面を特に粗にしないで圧着を行った比較例の場合の圧着作業中の状態(左)と圧着後の状態(右)を示す図、図3(b)は表面を粗にした上で圧着を行った本実施形態の場合の圧着作業中の状態(左)と圧着後の状態(右)を示す図である。   FIG. 3 is a schematic diagram showing a difference in bonding state between the strands by crimping, and FIG. 3A is a state during the crimping operation in the comparative example in which the crimping is performed without particularly roughening the surface (left). FIG. 3B is a view showing the state (right) after crimping, and FIG. 3B is a state during the crimping operation (left) and the state after crimping (right) in this embodiment in which the surface is roughened and crimped. ).

図3(a)に示すように、接触表面Sを特に粗にしない状態で、本工程の加圧圧着を行うと、素線3と素線3の凝着をあまり進行させることができず、凝着面Gの面積が小さくなる。これに対して、図3(b)に示すように、接触表面Sを粗にした状態で、本工程の加圧圧着を行うと、表面に存在する酸化被膜を破りながら、素線3と素線3を凝着させることができ、凝着面Gの面積を増やすことができて、接触抵抗を低減することができる。   As shown in FIG. 3 (a), when pressure bonding is performed in this step without particularly roughening the contact surface S, the adhesion between the strands 3 and 3 cannot be progressed much, The area of the adhesion surface G becomes small. On the other hand, as shown in FIG. 3 (b), when pressure bonding is performed in this step with the contact surface S roughened, the wire 3 and the element wire 3 are broken while breaking the oxide film present on the surface. The line 3 can be adhered, the area of the adhesion surface G can be increased, and the contact resistance can be reduced.

以上のように、本実施形態の圧着方法では、素線3同士の接触表面を超音波振動の印加によって粗にする予備工程と、電線1の導体部2に端子10を加圧により圧着する本工程とを別に行うようにしているので、予備工程において、小さなエネルギーの超音波振動を加えるだけで、表面を粗にするのに必要な有効な摺動を素線3間に起こさせることができる。   As described above, in the crimping method of the present embodiment, the preliminary process of roughening the contact surfaces of the strands 3 by applying ultrasonic vibration and the book for crimping the terminal 10 to the conductor portion 2 of the electric wire 1 by pressing. Since the process is performed separately, effective sliding necessary for roughening the surface can be caused between the strands 3 only by applying a small energy ultrasonic vibration in the preliminary process. .

即ち、従来のように、端子を加圧圧着する工程で同時に超音波振動を印加する場合は、端子による拘束が効いた状態での摺動となるために、大きな超音波エネルギーが必要となっていたが、本実施形態においては、端子10を圧着する時点ではなくて、端子10を接合する前の時点で、つまり素線3に対して全く拘束がない自由な状態で、素線3間に摺動を起こさせので、太物(大径)電線の場合であっても、小さなエネルギーで超音波振動により素線3間に摺動を起こさせて、素線3の表面を粗にすることが可能となる。   That is, when ultrasonic vibration is simultaneously applied in the process of press-bonding the terminal as in the conventional case, a large amount of ultrasonic energy is required because sliding is performed in a state in which the terminal is restrained. However, in the present embodiment, not between the time when the terminals 10 are crimped but before the terminals 10 are joined, that is, in a free state where there is no restriction on the wires 3, between the wires 3. Since the sliding is caused, even in the case of a thick (large diameter) electric wire, the surface of the strand 3 is roughened by sliding between the strands 3 by ultrasonic vibration with a small energy. Is possible.

従って、表面を粗にした状態で、本工程の加圧圧着を行うことにより、酸化被膜を破りながら、端子10と電線1の導体部2の間の凝着性や素線3と素線3の間の凝着性を高めることができ、その結果として、端子接続部の抵抗を低減することができて、それにより、大電流が流れた場合の温度上昇を回避することができる。   Therefore, by pressing and pressing in this step with the surface roughened, the adhesion between the terminal 10 and the conductor portion 2 of the electric wire 1 and the strands 3 and 3 are broken while breaking the oxide film. As a result, the resistance of the terminal connection portion can be reduced, thereby avoiding an increase in temperature when a large current flows.

このことは、銅電線に比べて放熱性の低いアルミニウム電線の場合に特に有用なことである。また、小さなエネルギーの超音波振動を加えるだけでよいので、製造上の負担を軽くすることもできる。   This is particularly useful in the case of an aluminum wire that has a lower heat dissipation than a copper wire. Moreover, since it is only necessary to apply ultrasonic vibration with a small energy, the manufacturing burden can be reduced.

なお、前述の予備工程において、表面を粗にした素線3と素線3の接触面間に更に超音波振動を加えることにより、素線3と素線3の接触面を溶融させて、素線3同士を予備的に接合させておいてもよい。そのようにすれば、素線3間の接触抵抗をより小さくすることができる。   In addition, in the above-described preliminary process, by further applying ultrasonic vibration between the contact surfaces of the strand 3 and the strand 3 whose surfaces are roughened, the contact surface of the strand 3 and the strand 3 is melted, The wires 3 may be preliminarily joined. By doing so, the contact resistance between the strands 3 can be further reduced.

(a)〜(c)は本発明の実施形態の圧着方法の工程説明図である。(A)-(c) is process explanatory drawing of the crimping | compression-bonding method of embodiment of this invention. 同方法における予備工程の原理説明図で、(a)は超音波振動を加えているときの電線の導体部を正面から見た図、(b)は同側面から見た図である。It is a principle explanatory view of a preliminary process in the method, (a) is a view of the conductor portion of the wire when applying ultrasonic vibration from the front, (b) is a view from the side. 圧着による素線間の接合状態の違いを示す模式図で、(a)は表面を特に粗にしないで圧着を行った比較例の場合の圧着作業中の状態(左)と圧着後の状態(右)を示す図、(b)は表面を粗にした上で圧着を行った本実施形態の場合の圧着作業中の状態(左)と圧着後の状態(右)を示す図である。FIG. 4 is a schematic diagram showing a difference in bonding state between strands by crimping, in which (a) shows a state during the crimping operation (left) and a state after crimping (in the case of the comparative example in which the crimping is performed without particularly roughening the surface ( (B) is a diagram showing a state during the crimping operation (left) and a state after the crimping (right) in the present embodiment in which the crimping is performed after the surface is roughened. 一般的な端子の圧着方法の説明図である。It is explanatory drawing of the crimping method of a general terminal.

符号の説明Explanation of symbols

1 電線
2 導体部
3 素線
7 超音波接合機
10 アルミ電線用圧着端子(端子)
12 圧着部
14 圧着片
DESCRIPTION OF SYMBOLS 1 Electric wire 2 Conductor part 3 Elementary wire 7 Ultrasonic bonding machine 10 Crimp terminal (terminal) for aluminum electric wires
12 Crimp part 14 Crimp piece

Claims (3)

  1. 端子の圧着部を、多数の素線の束よりなる電線の導体部に対して、外側から包み込むように圧着する電線に対する端子の圧着方法において、
    前記電線の導体部を単体のまま超音波接合機にセットし、該超音波接合機により前記導体部に超音波振動を加えることで、前記導体部を構成している素線と素線の接触面間に摺動を起こさせて、素線の表面を粗にする予備工程を実行した後、前記導体部の外周に前記端子の圧着部を加圧により圧着する本工程を実行することを特徴とする電線に対する端子の圧着方法。
    In the crimping method of the terminal against the electric wire to be crimped so that the crimping portion of the terminal is wrapped from the outside with respect to the conductor portion of the electric wire consisting of a bundle of many strands,
    The conductor part of the electric wire is set in an ultrasonic bonding machine as a single unit, and the ultrasonic wave is applied to the conductor part by the ultrasonic bonding machine, so that the wire constituting the conductor part is in contact with the wire. After performing a preliminary step of causing the sliding between the surfaces to roughen the surface of the wire, this step of pressing the crimping portion of the terminal on the outer periphery of the conductor portion by pressing is performed. Crimping method of the terminal to the wire.
  2. 請求項1に記載の電線に対する端子の圧着方法であって、
    前記予備工程にて、表面を粗にした素線と素線の接触面間が予備的に接合するまで超音波振動を加えることを特徴とする電線に対する端子の圧着方法。
    A method for crimping a terminal to an electric wire according to claim 1,
    A method for crimping a terminal against an electric wire, wherein ultrasonic vibration is applied until a contact between the surface of the wire whose surface is roughened and the contact surface of the wire is preliminarily joined in the preliminary step.
  3. 請求項1または2に記載の電線に対する端子の圧着方法であって、
    前記素線が、アルミニウムあるいはアルミニウム合金よりなる非メッキ素線であることを特徴とする電線に対する端子の圧着方法。
    A method for crimping a terminal against an electric wire according to claim 1 or 2,
    A method for crimping a terminal against an electric wire, wherein the element wire is a non-plated element wire made of aluminum or an aluminum alloy.
JP2008075716A 2008-03-24 2008-03-24 Crimping method of terminal to electric wire Active JP5017156B2 (en)

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JP2013016430A (en) * 2011-07-06 2013-01-24 Auto Network Gijutsu Kenkyusho:Kk Wire with terminal metal and manufacturing method therefor
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JP6163149B2 (en) * 2014-12-15 2017-07-12 株式会社オートネットワーク技術研究所 Manufacturing method of electric wire with terminal
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JP2019096569A (en) 2017-11-28 2019-06-20 矢崎総業株式会社 Terminal-equipped electric wire, manufacturing method of terminal-equipped electric wire, and electric wire
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