JP2004200018A - Connector - Google Patents

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Publication number
JP2004200018A
JP2004200018A JP2002367610A JP2002367610A JP2004200018A JP 2004200018 A JP2004200018 A JP 2004200018A JP 2002367610 A JP2002367610 A JP 2002367610A JP 2002367610 A JP2002367610 A JP 2002367610A JP 2004200018 A JP2004200018 A JP 2004200018A
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JP
Japan
Prior art keywords
mass
connection terminal
aluminum alloy
aluminum
alloy material
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JP2002367610A
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Japanese (ja)
Inventor
Toshiyuki Horikoshi
稔之 堀越
Hiromitsu Kuroda
洋光 黒田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Cable Ltd
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Hitachi Cable Ltd
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Filing date
Publication date
Application filed by Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP2002367610A priority Critical patent/JP2004200018A/en
Publication of JP2004200018A publication Critical patent/JP2004200018A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector which has a high conductivity and is superior in thermal resistance, has a high strength, and is easy in recycling of steel. <P>SOLUTION: The connector 4 is constructed of a compound metal material 3 in which ferrous material 2 and aluminum alloy material made of mainly aluminum are laminated, therefore, recycling of steel is easy. In the connector 4, the aluminum alloy material 1 of the connector 4 and the conductors 6a, 6b of the cables 5a, 5b are connected, therefor, high conductivity is obtained, and since the ferrous material 2 is used, high strength and thermal resistance can be obtained. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、ケーブルの導体に接続される接続端子に関する。
【0002】
【従来の技術】
ケーブルの導体に接続される接続端子の材料として、純銅の他、黄銅やリン青銅及び洋白(洋銀)等の銅を主成分とした合金が使用されている。また、導体との接続性の観点から、接続端子の材料の表面には、錫(Sn)やニッケル(Ni)めっきが施されている(例えば、特許文献1参照。)。
【0003】
【特許文献1】
特開平11−135226号公報
【0004】
【発明が解決しようとする課題】
ところで、近年、鉄鋼リサイクルの観点から、鉄スクラップ中に含まれる銅(Cu)をはじめとする特定の金属材料が問題となっている。これは、鉄鋼中に銅をはじめとする錫、ニッケル、クロム(Cr)等の特定金属材料が含まれていると、鉄鋼材料に表面割れや傷が発生し低品質の鉄鋼製品となるためである。また、銅をはじめとする錫、ニッケル、クロム等の特定金属材料は、鉄鋼溶湯中から除去することが非常に困難であるため、鉄鋼のリサイクルを繰り返す毎に濃縮され、さらに鉄鋼の品質を低下させてしまう。このため、鉄スクラップ中に含まれる家電製品や自動車等のケーブルに、銅をはじめとする錫、ニッケル、クロム等の特定金属材料以外の金属材料が望まれている。
【0005】
また、従来技術においては、ケーブル用の接続端子の金属材料は、純銅の他、黄銅やリン青銅及び洋白等の銅を主成分とする合金が使用されており、端子表面には、錫めっきやニッケルめっきが施されているため、鉄鋼リサイクルの点から、使用を避けるのが望まれる金属材料である。
【0006】
さらに、黄銅、リン青銅、洋白及びアルミニウム合金等の導電率の低い合金を材料とする端子の場合、接続部が接触抵抗によるジュール熱により高温になり、クリープによる変形が生じる。この結果、ケーブルの接続状態が緩んで接触抵抗が増加し、さらに接続部が高温になる。このサイクルが繰り返し起こることによってついには接続端子の接続部が破壊されてしまうという問題があった。
【0007】
そこで、本発明の目的は、上記課題を解決し、導電率が高く、耐熱性に優れ、高強度で、しかも鉄鋼リサイクルが容易な接続端子を提供することにある。
【0008】
【課題を解決するための手段】
上記目的を達成するために、請求項1の発明は、ケーブルの導体に接続される接続端子において、鉄鋼材料と、アルミニウムを主成分とするアルミニウム合金材料とが積層された複合金属材料からなり、アルミニウム合金材料が導体に接続されるようにしたものである。
【0009】
請求項2の発明は、請求項1に記載の構成に加え、アルミニウム合金材料と鉄鋼材料とが肉厚比1:1〜5:1でクラッド圧延加工されるのが好ましい。
【0010】
請求項3の発明は、請求項1または2に記載の構成に加え、鉄鋼材料は、鉄の他、0.01質量%未満の銅、錫、ニッケル、クロム等の不純物を含んでいてもよい。
【0011】
請求項4の発明は、請求項1または2に記載の構成に加え、アルミニウム合金材料は、アルミニウムの他、0.01質量%〜0.5質量%の範囲内のジルコニウムと、0.01質量%未満の不純物とを含んでいてもよい。
【0012】
請求項5の発明は、請求項1または2に記載の構成に加え、アルミニウム合金材料は、アルミニウムの他、0.5質量%〜5.0質量%の範囲内のマグネシウムと、0.01質量%〜0.5質量%の範囲内のジルコニウムと、0.02質量%未満の不純物とを含んでいてもよい。
【0013】
請求項6の発明は、請求項1または2に記載の構成に加え、アルミニウム合金材料は、アルミニウムの他、0.5質量%〜5.0質量%の範囲内のマグネシウムと、0.1質量%〜1.0質量%の範囲内のシリコンと、0.01質量%〜0.5質量%の範囲内のジルコニウムと、0.02質量%未満の不純物とを含んでいてもよい。
【0014】
請求項7の発明は、請求項1または2に記載の構成に加え、アルミニウム合金は、アルミニウムの他、0.3質量%〜1.0質量%の範囲内の鉄と、0.02質量%〜0.1質量%の範囲内のジルコニウムと、0.02質量%未満の不純物とを含んでいてもよい。
【0015】
請求項8の発明は、請求項1または2に記載の構成に加え、アルミニウム合金材料は、アルミニウムの他、0.01質量%未満の銅、錫、ニッケル、クロム等の不純物を含んでいてもよい。
【0016】
ここで、本発明者らは、所定値以上の純度を有するアルミニウムに、微量のマグネシウム、シリコン、鉄、ジルコニウム等を特定の比率で添加して得られるアルミニウム合金がアルミニウムの特長である高導電率を維持したまま、機械的強度が向上し、かつ伸びがあり、加えて耐熱性が改善されることを見出し、このアルミニウム合金と、高強度を有する鉄鋼材料とをクラッド圧延加工して複合材料化することで本発明の完成に至った。
【0017】
すなわち、本発明によれば、接続端子が鉄鋼材料と、アルミニウムを主成分とするアルミニウム合金材料とが積層された複合金属材料からなるので、鉄鋼リサイクルが容易である。また、本発明の接続端子は、アルミニウム合金材料とケーブルの導体とが接続されるので、高い導電率が得られ、鉄鋼材料を用いているので、高い強度と耐熱性とが得られる。
【0018】
【発明の実施の形態】
以下、本発明の実施の形態について詳述する。
【0019】
本発明の接続端子は、ケーブルの導体に接続される接続端子であって、鉄鋼材料と、アルミニウムを主成分とするアルミニウム合金材料とが積層された複合金属材料からなり、アルミニウム合金材料が導体に接続されるようにしたものである。
【0020】
本接続端子に用いられる複合金属材料は、アルミニウム合金材料と鉄鋼材料とが肉厚比1:1〜5:1でクラッド圧延加工された複合金属材料からなるのが好ましい。
【0021】
鉄鋼材料は、鉄の他、0.01質量%未満の銅、錫、ニッケル、クロム等の除去が不可能な不純物を含んでいてもよい。
【0022】
アルミニウム合金は、アルミニウムの他、0.01質量%〜0.5質量%の範囲内のジルコニウムと、0.01質量%未満の除去が不可能な不純物とを含んでいてもよく、また、アルミニウムの他、0.5質量%〜5.0質量%の範囲内のマグネシウムと、0.01質量%〜0.5質量%の範囲内のジルコニウムと、0.02質量%未満の除去が不可能な不純物とを含んでいてもよい。さらに、アルミニウム合金材料は、アルミニウムの他、0.5質量%〜5.0質量%の範囲内のマグネシウムと、0.1質量%〜1.0質量%の範囲内のシリコンと、0.01質量%〜0.5質量%の範囲内のジルコニウムと、0.02質量%未満の除去が不可能な不純物とを含んでいてもよく、また、アルミニウムの他、0.3質量%〜1.0質量%の範囲内の鉄と、0.02質量%〜0.1質量%の範囲内のジルコニウムと、0.02質量%の除去が不可能な不純物とを含んでいてもよく、アルミニウムの他、0.01質量%未満の銅、錫、ニッケル、クロム等の除去が不可能な不純物を含んでいてもよい。
【0023】
本発明の接続端子に用いられる複合金属材料は、前述した特定の元素及び質量比で構成されるアルミニウム合金材料と鉄鋼材料とをクラッド圧延加工し、アルミニウム合金材料側をケーブルの導体と接触させる構造の接続端子とすることにより、従来の黄銅、リン青銅、洋白等の銅合金、あるいはアルミニウム合金と比べて、導電率を大きく低下させることなく、引っ張り強さ及び伸びが大きく向上し、さらに高温環境下でも引っ張り強さが低下しないという高耐熱性を有する接続端子となる。
【0024】
このため、接続端子とケーブルの導体部との接続部が接触抵抗によるジュール熱により高温になり、クリープによる変形が生じた結果、ケーブルの導体との接続が緩んで接触抵抗が増加し、さらに接続部が高温になるといった接続部の破壊サイクルが生じにくくなる。
【0025】
また、アルミニウム合金材料の強度不足を鉄鋼材料が補うため、十分な接続強度を得ることができる。
【0026】
さらに、本発明の接続端子が廃棄処理された後、鉄スクラップ中に含まれていても、本接続端子を構成する金属材料は鉄鋼溶湯中からの除去が容易なため、リサイクルされた鉄鋼の品質を低下させることがない。
【0027】
すなわち、本発明の接続端子は、鉄鋼材料と、アルミニウムを主成分とするアルミニウム合金材料とが積層された複合金属材料で構成されているので、鉄鋼リサイクルが容易である。また、本発明の接続端子は、アルミニウム合金材料とケーブルの導体とが接続されるので、高い導電率が得られ、鉄鋼材料を用いているので、高い強度と耐熱性とが得られる。
【0028】
【実施例】
次に本発明の接続端子の実施例について図面を参照して詳述する。
【0029】
図1(a)は本発明の接続端子に用いられる複合金属材料の部分外観斜視図であり、図1(b)は図1(a)に示した複合金属材料を用いた接続端子の一実施例を示す外観斜視図である。図2(a)は図1(b)に示した接続端子を用いてケーブルの導体同士を突き合わせ接続した状態を示す部分外観斜視図であり、図2(b)は図2(a)のIIb−IIb線断面図である。
【0030】
尚、化学組成の単位は全て質量%である。
【0031】
(実施例1)
端子材料として、純度99.95%のアルミニウムを用い、Al−1.0%Mg−0.3%Si−0.05%Zrのアルミニウム合金材料1を鋳造した。アルミニウム合金材料1を鋳造した後、鉄鋼材料2に対し、肉厚比が1:4(鉄鋼材料2:アルミニウム合金材料1)になるように加工率90%のクラッド圧延加工を行い、150℃〜250℃で1時間〜10時間の熱処理を行って複合金属材料3を形成した。
【0032】
その後、複合金属材料3を加工して接続端子4の形状に加工した。
【0033】
(実施例2)
端子材料として、純度99.95%のアルミニウムを用い、Al−0.6%Fe−0.02%Zrのアルミニウム合金材料1を鋳造した。アルミニウム合金材料1を鋳造した後、鉄鋼材料2に対し、肉厚比が1:4(鉄鋼材料2:アルミニウム合金材料1)になるように加工率90%のクラッド圧延加工を行い、250℃〜350℃で約1時間の熱処理を行って複合金属材料3を形成した。
【0034】
その後、複合金属材料3を加工して接続端子4の形状に加工した。
【0035】
(比較例1)
端子材料として、純度99.95%のアルミニウムを用い、アルミニウム材料を鋳造した後、断面減少率90%で塑性加工を行い、250℃〜350℃で約1時間の熱処理を行った。
【0036】
その後、アルミニウム材料を加工して接続端子4の形状に加工した。
【0037】
以上のようにして得られた端子材料について、室温(20℃)での導電率、引っ張り強さ及び280℃の高温環境下での引っ張り強さをそれぞれ測定した。高温環境下での引っ張り強さは、室温での引っ張り強さに対する残存率で評価した。
【0038】
各実施例及び比較例について、上記特性を測定した結果を表1に示す。
【0039】
【表1】

Figure 2004200018
【0040】
表1から明らかなように、実施例1の複合金属材料3は、比較例1の端子材料と比べて、導電率が約66%に低下するが、著しく引っ張り強さ及び伸びが大きいことが分かる。さらに、実施例1の複合金属材料3は、高温下での強度残存率も95%を超え、耐熱性が著しく改善されていることが分かる。このように、実施例1の複合金属材料3は高強度で伸びが大きく、かつ、耐熱性を有する材料であることが容易に理解できる。
【0041】
また、表1から明らかなように、実施例2の複合金属材料3は、実施例1の複合金属材料3と比べて、引っ張り強さが劣るが、比較例1の端子材料と比べて、約80%の導電率が得られ、引っ張り強さ及び伸びが大きいことが分かる。さらに、実施例2の複合金属材料3は、高温下での強度残存率も95%を超え、耐熱性が著しく改善されている。
【0042】
このように、実施例2の複合金属材料3は、高強度で伸びが大きく、かつ、耐熱性を有する材料であることが容易に理解できる。
【0043】
さらに、各実施例で得られた複合金属材料3を図1(b)に示すようにケーブル5a、5bの導体6a、6bと直接接触するように接続端子4の形状に加工すると、図2(a)に示すようにケーブル5a、5bの各導体6a、6bと導電率の高いアルミニウム合金材料1とが直接接触するため、接触抵抗が小さくなる。このため、各実施例で得られた複合金属材料3からなる接続端子4は、接触抵抗によるジュール熱の発生を抑制することができる。
【0044】
ここで、本実施例では接続端子4の形状が両側面に凹部を有するU字断面形状の場合について説明したが、本発明の接続端子はこれに限定されず、U字断面形状部とボルト接続用のハト目形状部とが一体化した形状であってもよく、U字断面形状部とU字平面形状部とが一体化した形状であってもよい。また、加工率及び熱処理条件等についても限定されるものではない。
【0045】
以上において、本発明の接続端子に用いられる複合金属材料は、従来の接続端子に用いられる金属材料である黄銅、リン青銅及び洋白等の銅合金やアルミニウム合金に比べて、導電率が高いため、ジュール熱の発生によるエネルギー損失が少なく、エネルギーの高効率化が達成できる。また、本発明の接続端子に用いられる複合金属材料は、高温環境下での強度残存率が高いことから、高耐熱性が要求される電気自動車のケーブルの端子材料等(例えば、自動車ハーネス用接続端子、巻き線用接続端子及びその他のアッセンブリー品の端子)に適用すれば、自動車の信頼性が著しく向上する。
【0046】
【発明の効果】
以上要するに本発明によれば、導電率が高く、耐熱性に優れ、高強度で、しかも鉄鋼リサイクルが容易な接続端子の提供を実現することができる。
【図面の簡単な説明】
【図1】(a)は本発明の接続端子に用いられる複合金属材料の部分外観斜視図であり、(b)は(a)に示した複合金属材料を用いた接続端子の一実施例を示す外観斜視図である。
【図2】(a)は図1(b)に示した接続端子を用いてケーブルの導体同士を突き合わせ接続した状態を示す部分外観斜視図であり、(b)は図2(a)のIIb−IIb線断面図である。
【符号の説明】
1 アルミニウム合金材料
2 鉄鋼材料
3 複合金属材料
4 接続端子
5a、5b ケーブル
6a、6b 導体[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a connection terminal connected to a conductor of a cable.
[0002]
[Prior art]
As a material of the connection terminal connected to the conductor of the cable, an alloy mainly containing copper, such as brass, phosphor bronze, and nickel silver (nickel silver), is used in addition to pure copper. Further, from the viewpoint of connectivity with a conductor, the surface of the material of the connection terminal is plated with tin (Sn) or nickel (Ni) (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-11-135226
[Problems to be solved by the invention]
By the way, in recent years, from the viewpoint of steel recycling, specific metal materials such as copper (Cu) contained in iron scrap have become a problem. This is because if steel contains specific metal materials such as copper, tin, nickel, chromium (Cr), etc., surface cracks and scratches occur on the steel materials, resulting in low quality steel products. is there. Also, specific metal materials such as tin, nickel, and chromium, such as copper, are very difficult to remove from the molten steel, so they are concentrated each time the steel is recycled, further deteriorating the quality of the steel. Let me do it. For this reason, metal materials other than specific metal materials, such as copper, tin, nickel, and chromium, are desired for cables for home appliances and automobiles contained in iron scrap.
[0005]
Further, in the prior art, the metal material of the connection terminal for the cable, in addition to pure copper, an alloy mainly containing copper such as brass, phosphor bronze, and nickel silver is used. It is a metal material whose use is desired to be avoided in terms of steel recycling because it is coated with nickel and nickel.
[0006]
Furthermore, in the case of a terminal made of an alloy having a low conductivity, such as brass, phosphor bronze, nickel silver, and an aluminum alloy, the connection portion becomes high in temperature due to Joule heat due to contact resistance and is deformed by creep. As a result, the connection state of the cable is loosened, the contact resistance increases, and the temperature of the connection becomes high. There is a problem that the connection portion of the connection terminal is eventually destroyed due to repeated occurrence of this cycle.
[0007]
Then, an object of the present invention is to solve the above-mentioned problems, and to provide a connection terminal having high conductivity, excellent heat resistance, high strength and easy steel recycling.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is a connection terminal connected to a conductor of a cable, wherein the connection terminal is made of a composite metal material in which a steel material and an aluminum alloy material containing aluminum as a main component are laminated, An aluminum alloy material is connected to the conductor.
[0009]
According to a second aspect of the present invention, in addition to the configuration of the first aspect, it is preferable that the aluminum alloy material and the steel material are clad rolled at a thickness ratio of 1: 1 to 5: 1.
[0010]
According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the steel material may contain less than 0.01% by mass of impurities such as copper, tin, nickel, and chromium in addition to iron. .
[0011]
According to a fourth aspect of the present invention, in addition to the configuration according to the first or second aspect, in addition to aluminum, the aluminum alloy material contains zirconium in a range of 0.01% by mass to 0.5% by mass, and 0.01% by mass. % Of impurities.
[0012]
According to a fifth aspect of the present invention, in addition to the configuration according to the first or second aspect, in addition to aluminum, the aluminum alloy material includes magnesium in a range of 0.5% by mass to 5.0% by mass, and 0.01% by mass. % To 0.5% by mass of zirconium and less than 0.02% by mass of impurities.
[0013]
According to a sixth aspect of the present invention, in addition to the configuration according to the first or second aspect, in addition to aluminum, the aluminum alloy material includes magnesium in a range of 0.5% by mass to 5.0% by mass, and 0.1% by mass. % To 1.0% by mass of silicon, 0.01% to 0.5% by mass of zirconium, and less than 0.02% by mass of impurities.
[0014]
According to a seventh aspect of the present invention, in addition to the configuration according to the first or second aspect, in addition to aluminum, the aluminum alloy includes iron in the range of 0.3% by mass to 1.0% by mass, and 0.02% by mass. It may contain zirconium in the range of -0.1% by mass and impurities of less than 0.02% by mass.
[0015]
According to the invention of claim 8, in addition to the structure of claim 1 or 2, the aluminum alloy material may contain less than 0.01% by mass of impurities such as copper, tin, nickel, and chromium in addition to aluminum. Good.
[0016]
Here, the present inventors have found that an aluminum alloy obtained by adding a trace amount of magnesium, silicon, iron, zirconium, etc. to aluminum having a purity equal to or higher than a predetermined value at a specific ratio is a high conductivity which is a feature of aluminum. It is found that the mechanical strength is improved and the elongation is improved, and the heat resistance is also improved while maintaining the aluminum alloy.The aluminum alloy and the high-strength steel material are clad and rolled into a composite material. As a result, the present invention was completed.
[0017]
That is, according to the present invention, since the connection terminal is made of a composite metal material in which a steel material and an aluminum alloy material containing aluminum as a main component are laminated, steel recycling is easy. Further, the connection terminal of the present invention has a high electrical conductivity because the aluminum alloy material is connected to the conductor of the cable, and has high strength and heat resistance because it uses a steel material.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
[0019]
The connection terminal of the present invention is a connection terminal connected to a conductor of a cable, and is made of a composite metal material in which a steel material and an aluminum alloy material containing aluminum as a main component are laminated, and the aluminum alloy material is used as the conductor. It is intended to be connected.
[0020]
The composite metal material used for the present connection terminal is preferably composed of a composite metal material obtained by clad rolling an aluminum alloy material and a steel material at a thickness ratio of 1: 1 to 5: 1.
[0021]
The steel material may contain, in addition to iron, less than 0.01% by mass of non-removable impurities such as copper, tin, nickel, and chromium.
[0022]
The aluminum alloy may contain zirconium in the range of 0.01% by mass to 0.5% by mass and impurities that cannot be removed less than 0.01% by mass in addition to aluminum. In addition, magnesium in the range of 0.5% to 5.0% by mass, zirconium in the range of 0.01% to 0.5% by mass, and removal of less than 0.02% by mass are impossible. Impurities may be included. Further, in addition to aluminum, the aluminum alloy material contains magnesium in the range of 0.5% to 5.0% by mass, silicon in the range of 0.1% to 1.0% by mass, It may contain zirconium in a range of from 0.5% by mass to 0.5% by mass and impurities that cannot be removed by less than 0.02% by mass. In addition to aluminum, 0.3% by mass to 1.% by mass. It may contain iron in a range of 0% by mass, zirconium in a range of 0.02% by mass to 0.1% by mass, and impurities that cannot be removed in an amount of 0.02% by mass. In addition, it may contain impurities that cannot be removed, such as less than 0.01% by mass of copper, tin, nickel, and chromium.
[0023]
The composite metal material used for the connection terminal of the present invention has a structure in which an aluminum alloy material and a steel material composed of the specific elements and mass ratios described above are clad and rolled, and the aluminum alloy material side is brought into contact with the conductor of the cable. As compared with conventional copper alloys such as brass, phosphor bronze, nickel silver, or aluminum alloys, the tensile strength and elongation are greatly improved without significantly lowering the conductivity, and even higher temperatures A connection terminal having high heat resistance, in which the tensile strength does not decrease even under an environment.
[0024]
For this reason, the connection between the connection terminal and the conductor of the cable becomes hot due to the Joule heat due to the contact resistance and deforms due to creep.As a result, the connection with the conductor of the cable is loosened and the contact resistance increases, further connecting This makes it difficult for the connection portion to be broken at a high temperature.
[0025]
Further, since the steel material compensates for the insufficient strength of the aluminum alloy material, a sufficient connection strength can be obtained.
[0026]
Furthermore, even after the connection terminal of the present invention is discarded, even if it is included in the iron scrap, the metal material constituting the connection terminal can be easily removed from the molten steel, so that the quality of the recycled steel can be improved. Is not reduced.
[0027]
That is, since the connection terminal of the present invention is composed of a composite metal material in which a steel material and an aluminum alloy material containing aluminum as a main component are laminated, steel recycling is easy. Further, the connection terminal of the present invention has a high electrical conductivity because the aluminum alloy material is connected to the conductor of the cable, and has high strength and heat resistance because it uses a steel material.
[0028]
【Example】
Next, embodiments of the connection terminal of the present invention will be described in detail with reference to the drawings.
[0029]
FIG. 1A is a partial external perspective view of a composite metal material used for a connection terminal of the present invention, and FIG. 1B is an embodiment of a connection terminal using the composite metal material shown in FIG. It is an appearance perspective view showing an example. FIG. 2A is a partial external perspective view showing a state where the conductors of the cable are butt-connected using the connection terminals shown in FIG. 1B, and FIG. 2B is IIb in FIG. 2A. It is a IIb line sectional view.
[0030]
The units of the chemical composition are all mass%.
[0031]
(Example 1)
Aluminum alloy material 1 of Al-1.0% Mg-0.3% Si-0.05% Zr was cast using aluminum having a purity of 99.95% as a terminal material. After casting the aluminum alloy material 1, the clad rolling process is performed on the steel material 2 at a working ratio of 90% so that the thickness ratio becomes 1: 4 (steel material 2: aluminum alloy material 1). Heat treatment was performed at 250 ° C. for 1 hour to 10 hours to form a composite metal material 3.
[0032]
Thereafter, the composite metal material 3 was processed into the shape of the connection terminal 4.
[0033]
(Example 2)
Aluminum alloy material 1 of Al-0.6% Fe-0.02% Zr was cast using aluminum having a purity of 99.95% as a terminal material. After casting the aluminum alloy material 1, clad rolling at a working ratio of 90% is performed on the steel material 2 so that the thickness ratio becomes 1: 4 (steel material 2: aluminum alloy material 1). Heat treatment was performed at 350 ° C. for about 1 hour to form a composite metal material 3.
[0034]
Thereafter, the composite metal material 3 was processed into the shape of the connection terminal 4.
[0035]
(Comparative Example 1)
As a terminal material, aluminum having a purity of 99.95% was used. After casting the aluminum material, plastic working was performed at a cross-sectional reduction rate of 90%, and heat treatment was performed at 250 to 350 ° C. for about 1 hour.
[0036]
Thereafter, the connection material 4 was formed by processing an aluminum material.
[0037]
With respect to the terminal material obtained as described above, the electrical conductivity at room temperature (20 ° C.), the tensile strength, and the tensile strength under a high temperature environment of 280 ° C. were measured. The tensile strength under a high temperature environment was evaluated by a residual ratio to the tensile strength at room temperature.
[0038]
Table 1 shows the results of measuring the above characteristics for each of the examples and comparative examples.
[0039]
[Table 1]
Figure 2004200018
[0040]
As is clear from Table 1, the composite metal material 3 of Example 1 has a conductivity lower than that of the terminal material of Comparative Example 1 to about 66%, but has significantly higher tensile strength and elongation. . Furthermore, the composite metal material 3 of Example 1 also has a strength residual ratio at a high temperature of more than 95%, which indicates that the heat resistance is significantly improved. Thus, it can be easily understood that the composite metal material 3 of Example 1 is a material having high strength, large elongation, and heat resistance.
[0041]
Further, as is apparent from Table 1, the composite metal material 3 of Example 2 has a lower tensile strength than the composite metal material 3 of Example 1, but has a lower tensile strength than the terminal material of Comparative Example 1. It can be seen that a conductivity of 80% was obtained and the tensile strength and elongation were large. Further, the composite metal material 3 of Example 2 has a strength retention at a high temperature of more than 95%, and the heat resistance is remarkably improved.
[0042]
Thus, it can be easily understood that the composite metal material 3 of Example 2 is a material having high strength, large elongation, and heat resistance.
[0043]
Further, when the composite metal material 3 obtained in each example is processed into the shape of the connection terminal 4 so as to be in direct contact with the conductors 6a and 6b of the cables 5a and 5b as shown in FIG. As shown in a), since the conductors 6a and 6b of the cables 5a and 5b and the aluminum alloy material 1 having high conductivity are in direct contact, the contact resistance is reduced. For this reason, the connection terminal 4 made of the composite metal material 3 obtained in each embodiment can suppress generation of Joule heat due to contact resistance.
[0044]
Here, in the present embodiment, the case where the shape of the connection terminal 4 is a U-shaped cross-section having concave portions on both side surfaces has been described, but the connection terminal of the present invention is not limited to this, and the U-shaped cross-section and the bolt connection And the U-shaped cross-section and the U-shaped planar shape may be integrated. Further, the processing rate and the heat treatment conditions are not limited.
[0045]
In the above, the composite metal material used for the connection terminal of the present invention has a higher conductivity than copper alloys and aluminum alloys such as brass, phosphor bronze and nickel silver which are metal materials used for the conventional connection terminal. In addition, energy loss due to generation of Joule heat is small, and higher energy efficiency can be achieved. Further, since the composite metal material used for the connection terminal of the present invention has a high strength retention rate under a high temperature environment, a terminal material of an electric vehicle cable or the like which requires high heat resistance (for example, a connection material for an automobile harness). (Terminals, winding connection terminals, and terminals of other assembly products), the reliability of automobiles is significantly improved.
[0046]
【The invention's effect】
In summary, according to the present invention, it is possible to provide a connection terminal having high conductivity, excellent heat resistance, high strength, and easy steel recycling.
[Brief description of the drawings]
FIG. 1A is a partial external perspective view of a composite metal material used for a connection terminal of the present invention, and FIG. 1B is an example of a connection terminal using the composite metal material shown in FIG. It is an external appearance perspective view shown.
2 (a) is a partial external perspective view showing a state in which conductors of a cable are butt-connected using the connection terminals shown in FIG. 1 (b), and FIG. 2 (b) is IIb in FIG. 2 (a). It is a IIb line sectional view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Aluminum alloy material 2 Steel material 3 Composite metal material 4 Connection terminal 5a, 5b Cable 6a, 6b Conductor

Claims (8)

ケーブルの導体に接続される接続端子において、鉄鋼材料と、アルミニウムを主成分とするアルミニウム合金材料とが積層された複合金属材料からなり、上記アルミニウム合金材料が上記導体に接続されるようにしたことを特徴とする接続端子。In the connection terminal connected to the conductor of the cable, the connection terminal is made of a composite metal material in which a steel material and an aluminum alloy material containing aluminum as a main component are laminated, and the aluminum alloy material is connected to the conductor. A connection terminal. 上記アルミニウム合金材料と上記鉄鋼材料とが肉厚比1:1〜5:1でクラッド圧延加工された請求項1に記載の接続端子。The connection terminal according to claim 1, wherein the aluminum alloy material and the steel material are clad-rolled at a thickness ratio of 1: 1 to 5: 1. 上記鉄鋼材料は、鉄の他、0.01質量%未満の銅、錫、ニッケル、クロム等の不純物を含む請求項1または2に記載の接続端子。The connection terminal according to claim 1, wherein the steel material includes, in addition to iron, less than 0.01% by mass of impurities such as copper, tin, nickel, and chromium. 上記アルミニウム合金材料は、アルミニウムの他、0.01質量%〜0.5質量%の範囲内のジルコニウムと、0.01質量%未満の不純物とを含む請求項1または2に記載の接続端子。The connection terminal according to claim 1, wherein the aluminum alloy material contains zirconium in a range of 0.01% by mass to 0.5% by mass and impurities of less than 0.01% by mass, in addition to aluminum. 上記アルミニウム合金材料は、アルミニウムの他、0.5質量%〜5.0質量%の範囲内のマグネシウムと、0.01質量%〜0.5質量%の範囲内のジルコニウムと、0.02質量%未満の不純物とを含む請求項1または2に記載の接続端子。The aluminum alloy material contains, in addition to aluminum, magnesium in a range of 0.5% to 5.0% by mass, zirconium in a range of 0.01% to 0.5% by mass, and 0.02% by mass. The connection terminal according to claim 1, wherein the connection terminal contains less than about 0.5% of impurities. 上記アルミニウム合金材料は、アルミニウムの他、0.5質量%〜5.0質量%の範囲内のマグネシウムと、0.1質量%〜1.0質量%の範囲内のシリコンと、0.01質量%〜0.5質量%の範囲内のジルコニウムと、0.02質量%未満の不純物とを含む請求項1または2に記載の接続端子。The aluminum alloy material includes, in addition to aluminum, magnesium in a range of 0.5% by mass to 5.0% by mass, silicon in a range of 0.1% by mass to 1.0% by mass, and 0.01% by mass. 3. The connection terminal according to claim 1, comprising zirconium in a range of 0.5% to 0.5% by mass and impurities of less than 0.02% by mass. 上記アルミニウム合金材料は、アルミニウムの他、0.3質量%〜1.0質量%の範囲内の鉄と、0.02質量%〜0.1質量%の範囲内のジルコニウムと、0.02質量%未満の不純物とを含む請求項1または2に記載の接続端子。The aluminum alloy material contains, in addition to aluminum, iron in the range of 0.3% to 1.0% by mass, zirconium in the range of 0.02% to 0.1% by mass, and 0.02% by mass. The connection terminal according to claim 1, wherein the connection terminal contains less than about 0.5% of impurities. 上記アルミニウム合金材料は、アルミニウムの他、0.01質量%未満の銅、錫、ニッケル、クロム等の不純物を含む請求項1または2に記載の接続端子。The connection terminal according to claim 1, wherein the aluminum alloy material contains, in addition to aluminum, impurities of less than 0.01% by mass, such as copper, tin, nickel, and chromium.
JP2002367610A 2002-12-19 2002-12-19 Connector Pending JP2004200018A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3611800A1 (en) * 2018-08-13 2020-02-19 Hitachi Metals, Ltd. Terminal-equipped electric wire

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3611800A1 (en) * 2018-08-13 2020-02-19 Hitachi Metals, Ltd. Terminal-equipped electric wire
JP2020027758A (en) * 2018-08-13 2020-02-20 日立金属株式会社 Terminal-equipped wire
EP3611800B1 (en) * 2018-08-13 2022-02-16 Hitachi Metals, Ltd. Terminal-equipped electric wire
JP7228087B2 (en) 2018-08-13 2023-02-24 株式会社プロテリアル Wire with terminal

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