WO2014097692A1 - Aluminum material for connector terminals and connector terminal for automobiles - Google Patents
Aluminum material for connector terminals and connector terminal for automobiles Download PDFInfo
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- WO2014097692A1 WO2014097692A1 PCT/JP2013/074487 JP2013074487W WO2014097692A1 WO 2014097692 A1 WO2014097692 A1 WO 2014097692A1 JP 2013074487 W JP2013074487 W JP 2013074487W WO 2014097692 A1 WO2014097692 A1 WO 2014097692A1
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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
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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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
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/26—Connectors or connections adapted for particular applications for vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
- H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
- H01R4/184—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
- 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
Definitions
- the present invention relates to an aluminum material for a connector terminal used for a connector terminal of an aluminum electric wire for automobiles, a manufacturing method thereof, and an automobile connector terminal.
- Cu wires are generally used as electric wires for automobiles, and connector terminals using copper or a copper alloy as a base material are also used as connector terminals.
- JP 2003-168502 A Japanese Patent Laid-Open No. 2004-199934
- the present invention provides an aluminum material for connector terminals in which strength required for a structure as an aluminum connector terminal for an automobile and bending workability required for bending are sufficiently secured, a manufacturing method thereof, and an automobile It is an object to provide a connector terminal.
- the present inventor conducted various experiments and studies to solve the above problems, and as a result, it was found that the strength required for the structure of the aluminum connector terminal can be represented by the tensile strength of the aluminum material. It was.
- the bending workability can be controlled by controlling the elongation of the aluminum material.
- the elongation and the tensile strength are contradictory, it is necessary to identify an aluminum material suitable as an automobile connector terminal in consideration of the balance between the two. is there.
- the male terminal of the connector terminal is subjected to a severe bending process such as a 180 ° bending process, so that it can withstand such a severe process. Is needed.
- 1 is an electrical contact portion of a male terminal
- 1a is a vertex portion of bending.
- the strength required as a connector terminal for automobiles and the necessary strength during bending are satisfied by satisfying a tensile strength of 200 MPa or more and an elongation of 5% or more. It was found that both the bending workability can be satisfied.
- an aluminum material having an elongation of 5% or more can be obtained by heat-treating the tempered and expanded aluminum alloy at 250 to 300 ° C. .
- the aluminum material in which elongation of 5% or more is secured when a material having high tensile strength is selected as a base material and a tensile strength of 200 MPa or more is secured, as an aluminum material for connector terminals used for automobile connector terminals, It can be preferably used.
- the present invention is an invention based on the above findings, and the invention according to claim 1 It is an aluminum material for connector terminals used for connector terminals for automobiles,
- the aluminum material for connector terminals is characterized by having a tensile strength of 200 MPa or more and an elongation of 5% or more.
- Claim 2 is The aluminum material for connector terminals of Claim 1 is used, The connector terminal for motor vehicles characterized by the above-mentioned.
- the invention according to claim 3 The said connector terminal for motor vehicles is a male connector terminal, The connector terminal for motor vehicles of Claim 2 characterized by the above-mentioned.
- strength required for the structure as an aluminum connector terminal for automobiles, and the bending workability required at the time of a bending process were fully ensured, its manufacturing method, and an automobile Connector terminals can be provided.
- FIG. 1 It is sectional drawing which shows typically the shape of the electrical contact part of the male connector terminal which concerns on one embodiment of this invention. It is a figure explaining the measuring method of the structural strength of a connector terminal. It is a figure which shows the relationship between the tensile strength of the various aluminum materials from which heat processing temperature differs, and the structural strength of the connector terminal manufactured using these aluminum materials. It is a figure which shows the SEM observation result of the vertex part when various aluminum materials in which heat processing temperature differs are bent 180 degree
- the strength that the terminal to which the electric wire is connected does not break during use is required, and the load resistance performance is evaluated. It was confirmed that the load bearing performance of the connector terminal correlates well with the tensile strength of the aluminum material, and the load bearing performance of the connector terminal can be represented by the tensile strength of the aluminum material.
- FIG. 2 shows an overview of a measuring device that measures the load bearing performance of connector terminals.
- 2A is a side view
- FIG. 2B is a cross-sectional view taken along line X-X ′ in FIG. 2A.
- the load bearing performance was measured for each terminal made from an aluminum material that was heat-treated at each temperature shown in Table 1 for 3 hours (number of samples: 5 each).
- Table 1 shows the measurement results of load bearing performance and tensile strength of each aluminum material. Table 1 also shows the average load resistance performance of Samples 1 to 5, the difference between the maximum value and the average (“+”), and the difference between the average and the minimum value (“ ⁇ ”).
- FIG. 3 is plotted with the load bearing performance (N) as the horizontal axis (shown as load (N) in FIG. 3) and the tensile strength (MPa) as the vertical axis. The relationship between performance (average) and tensile strength is shown.
- Table 2 shows the measurement results of the tensile strength and elongation of the aluminum material at each heat treatment temperature.
- FIG. 3 shows that the load bearing performance and the tensile strength are well correlated, and the tensile strength of the aluminum material can represent the strength (load bearing performance) required for the connector terminal structure. I understand.
- a nickel base plating with a thickness of 0.3 ⁇ m and a tin plating with a thickness of 2.0 ⁇ m were applied, and further shown in FIG.
- a male terminal having the shape shown in FIG. 1 was prepared using an aluminum material heat-treated at each temperature, and the vicinity of the bent vertex was observed with an SEM to confirm the occurrence of breakage and the like.
- Fig. 4 shows the observed SEM photograph.
- the photograph shown in the lower stage in FIG. 4 is an enlarged photograph of a portion surrounded by a square in the upper picture.
- FIG. 4 shows that the fracture occurred when the heat treatment temperature was 225 ° C., but the fracture did not occur at 250 ° C. or higher.
- an aluminum material having a tensile strength of 200 MPa or more and an elongation of 5% or more is suitable as an aluminum material for connector terminals.
- an aluminum material having a tensile strength of 200 MPa or more in which an elongation of 5% or more is secured is obtained by performing heat treatment at 250 to 300 ° C. using a tempered appropriate aluminum alloy for extension.
- a connector terminal preferable as a connector terminal with an aluminum electric wire can be provided.
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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Abstract
Provided are: an aluminum material for connector terminals that has sufficiently secured the strength required for a structure serving as an aluminum connector terminal for automobiles and the bending workability required for bending work; a production method therefor; and a connector terminal for automobiles. The aluminum material for connector terminals is used for connector terminals for automobiles, has a tensile strength of at least 200 MPa, and has elongation of at least 5%. The connector terminal for automobiles uses said aluminum material for connector terminals.
Description
本発明は、自動車用アルミニウム電線のコネクタ端子に用いられるコネクタ端子用アルミニウム材料とその製造方法および自動車用コネクタ端子に関する。
The present invention relates to an aluminum material for a connector terminal used for a connector terminal of an aluminum electric wire for automobiles, a manufacturing method thereof, and an automobile connector terminal.
従来、自動車用電線としては一般に銅（Ｃｕ）線が使用され、コネクタ端子にも銅や銅合金を母材としたコネクタ端子が用いられている。
Conventionally, copper (Cu) wires are generally used as electric wires for automobiles, and connector terminals using copper or a copper alloy as a base material are also used as connector terminals.
しかし、近年、自動車などの車両重量の一層の軽量化を図る目的から、自動車用電線として、銅に比べて密度が約３分の１であるアルミニウムを芯線に用いたアルミニウム電線が注目されている（例えば、特許文献１）。
However, in recent years, for the purpose of further reducing the weight of a vehicle such as an automobile, an aluminum electric wire using aluminum, which has a density of about one-third that of copper as a core wire, has attracted attention as an electric wire for an automobile. (For example, patent document 1).
このようなアルミニウム電線の端子として、従来の銅線の場合と同様に銅製のコネクタ端子を使用すると、アルミニウムのイオン化傾向は銅に比べて非常に大きいため、アルミニウム電線とコネクタ端子との接触部分においてアルミニウムが電食されるという問題があった。そこで、コネクタ端子にもアルミニウムを使用することが提案されている（例えば、特許文献２）。
As a terminal of such an aluminum electric wire, if a copper connector terminal is used as in the case of a conventional copper wire, the ionization tendency of aluminum is much larger than that of copper, so in the contact portion between the aluminum electric wire and the connector terminal. There was a problem that aluminum was eroded. Therefore, it has been proposed to use aluminum for the connector terminals (for example, Patent Document 2).
しかしながら、このようなコネクタ端子の構造に必要な強度や曲げ加工時に必要な曲げ加工性は、今日まで十分に把握することができておらず、適切な強度および曲げ加工性を有するコネクタ端子用アルミニウム材料が得られていなかった。
However, the strength required for the structure of such connector terminals and the bending workability required for bending have not been fully grasped until now, and aluminum for connector terminals having appropriate strength and bending workability. The material was not obtained.
そこで、本発明は、アルミニウム製の自動車用コネクタ端子としての構造に必要とされる強度、および曲げ加工時に必要な曲げ加工性が十分に確保されたコネクタ端子用アルミニウム材料とその製造方法および自動車用コネクタ端子を提供することを課題とする。
Therefore, the present invention provides an aluminum material for connector terminals in which strength required for a structure as an aluminum connector terminal for an automobile and bending workability required for bending are sufficiently secured, a manufacturing method thereof, and an automobile It is an object to provide a connector terminal.
本発明者は、上記課題を解決するために種々の実験と検討を行い、その結果、アルミニウム製のコネクタ端子の構造に必要とされる強度はアルミニウム材料の引張強度で代表させることができることが分かった。
The present inventor conducted various experiments and studies to solve the above problems, and as a result, it was found that the strength required for the structure of the aluminum connector terminal can be represented by the tensile strength of the aluminum material. It was.
一方、曲げ加工性は、アルミニウム材料の伸びを制御することにより制御できるが、伸びと引張強度は背反するため、両者のバランスを考慮して自動車用コネクタ端子として好適なアルミニウム材料を特定する必要がある。
On the other hand, the bending workability can be controlled by controlling the elongation of the aluminum material. However, since the elongation and the tensile strength are contradictory, it is necessary to identify an aluminum material suitable as an automobile connector terminal in consideration of the balance between the two. is there.
また、コネクタ端子におけるオス端子とメス端子の内、図１に示すように、オス端子は、１８０°曲げ加工という厳しい曲げ加工が施されるため、このような厳しい加工にも耐えることができる伸びが必要とされる。なお、図１において、１はオス端子の電気接触部であり、１ａは曲げの頂点部である。
Further, as shown in FIG. 1, the male terminal of the connector terminal is subjected to a severe bending process such as a 180 ° bending process, so that it can withstand such a severe process. Is needed. In FIG. 1, 1 is an electrical contact portion of a male terminal, and 1a is a vertex portion of bending.
以上の点を考慮して本発明者が種々の実験と検討を行った結果、引張強度２００ＭＰａ以上、伸び５％以上を満足させることにより、自動車用コネクタ端子として必要な強度と曲げ加工時に必要な曲げ加工性の両者を満足させられることが分かった。
As a result of conducting various experiments and examinations by the inventor in consideration of the above points, the strength required as a connector terminal for automobiles and the necessary strength during bending are satisfied by satisfying a tensile strength of 200 MPa or more and an elongation of 5% or more. It was found that both the bending workability can be satisfied.
そして、種々の実験と検討を行った結果、調質済展伸用アルミニウム合金を、２５０～３００℃で熱処理することにより、伸び５％以上が確保されたアルミニウム材料を得ることができることが分かった。
As a result of various experiments and examinations, it was found that an aluminum material having an elongation of 5% or more can be obtained by heat-treating the tempered and expanded aluminum alloy at 250 to 300 ° C. .
この伸び５％以上が確保されたアルミニウム材料において、母材として引張強度が高い材料を選択して２００ＭＰａ以上の引張強度が確保されていると、自動車用コネクタ端子に用いられるコネクタ端子用アルミニウム材料として好適に使用することができる。
In the aluminum material in which elongation of 5% or more is secured, when a material having high tensile strength is selected as a base material and a tensile strength of 200 MPa or more is secured, as an aluminum material for connector terminals used for automobile connector terminals, It can be preferably used.
本発明は上記の知見に基づく発明であり、請求項１に記載の発明は、
自動車用コネクタ端子に用いられるコネクタ端子用アルミニウム材料であって、
引張強度が２００ＭＰａ以上であり、且つ伸びが５％以上であることを特徴とするコネクタ端子用アルミニウム材料である。 The present invention is an invention based on the above findings, and the invention according toclaim 1
It is an aluminum material for connector terminals used for connector terminals for automobiles,
The aluminum material for connector terminals is characterized by having a tensile strength of 200 MPa or more and an elongation of 5% or more.
自動車用コネクタ端子に用いられるコネクタ端子用アルミニウム材料であって、
引張強度が２００ＭＰａ以上であり、且つ伸びが５％以上であることを特徴とするコネクタ端子用アルミニウム材料である。 The present invention is an invention based on the above findings, and the invention according to
It is an aluminum material for connector terminals used for connector terminals for automobiles,
The aluminum material for connector terminals is characterized by having a tensile strength of 200 MPa or more and an elongation of 5% or more.
そして、請求項２に記載の発明は、
請求項１に記載のコネクタ端子用アルミニウム材料が用いられていることを特徴とする自動車用コネクタ端子である。 And the invention of Claim 2 is
The aluminum material for connector terminals ofClaim 1 is used, The connector terminal for motor vehicles characterized by the above-mentioned.
請求項１に記載のコネクタ端子用アルミニウム材料が用いられていることを特徴とする自動車用コネクタ端子である。 And the invention of Claim 2 is
The aluminum material for connector terminals of
また、請求項３に記載の発明は、
前記自動車用コネクタ端子が、雄型コネクタ端子であることを特徴とする請求項２に記載の自動車用コネクタ端子である。 The invention according to claim 3
The said connector terminal for motor vehicles is a male connector terminal, The connector terminal for motor vehicles of Claim 2 characterized by the above-mentioned.
前記自動車用コネクタ端子が、雄型コネクタ端子であることを特徴とする請求項２に記載の自動車用コネクタ端子である。 The invention according to claim 3
The said connector terminal for motor vehicles is a male connector terminal, The connector terminal for motor vehicles of Claim 2 characterized by the above-mentioned.
本発明によれば、アルミニウム製の自動車用コネクタ端子としての構造に必要とされる強度、および曲げ加工時に必要な曲げ加工性が十分に確保されたコネクタ端子用アルミニウム材料とその製造方法および自動車用コネクタ端子を提供することができる。
ADVANTAGE OF THE INVENTION According to this invention, the aluminum material for connector terminals in which the intensity | strength required for the structure as an aluminum connector terminal for automobiles, and the bending workability required at the time of a bending process were fully ensured, its manufacturing method, and an automobile Connector terminals can be provided.
以下、本発明を実施の形態に基づき、図面を用いて説明する。
Hereinafter, the present invention will be described based on embodiments with reference to the drawings.
１．実験１（コネクタ端子の構造に必要とされる強度）
最初に、アルミニウム製のコネクタ端子（以下、単に「端子」ともいう）の構造に必要とされる強度について説明する。 1. Experiment 1 (Strength required for connector terminal structure)
First, the strength required for the structure of an aluminum connector terminal (hereinafter also simply referred to as “terminal”) will be described.
最初に、アルミニウム製のコネクタ端子（以下、単に「端子」ともいう）の構造に必要とされる強度について説明する。 1. Experiment 1 (Strength required for connector terminal structure)
First, the strength required for the structure of an aluminum connector terminal (hereinafter also simply referred to as “terminal”) will be described.
自動車用コネクタ端子の構造においては、電線が接続された端子が使用中に折れたりすることがない強度が必要とされ、耐荷重性能で評価されるが、本発明者は、以下の実験により、このコネクタ端子の耐荷重性能がアルミニウム材料の引張強度とよく相関しており、アルミニウム材料の引張強度でコネクタ端子の耐荷重性能を代表させることができることを確認した。
In the structure of the connector terminal for automobiles, the strength that the terminal to which the electric wire is connected does not break during use is required, and the load resistance performance is evaluated. It was confirmed that the load bearing performance of the connector terminal correlates well with the tensile strength of the aluminum material, and the load bearing performance of the connector terminal can be represented by the tensile strength of the aluminum material.
図２に、コネクタ端子における耐荷重性能を測定する測定装置の概要を示す。なお、図２（ａ）は側面図であり、図２（ｂ）は図２（ａ）のＸ－Ｘ’における断面図である。
Fig. 2 shows an overview of a measuring device that measures the load bearing performance of connector terminals. 2A is a side view, and FIG. 2B is a cross-sectional view taken along line X-X ′ in FIG. 2A.
図２に示すように、電線が接続された端子の首部近傍を治具に固定した後、端子の電線側の端部に白抜き矢印方向の荷重を掛け、端子の首部で折れたときの荷重を測定し、耐荷重性能とする。
As shown in FIG. 2, after fixing the vicinity of the neck of the terminal to which the electric wire is connected to the jig, a load in the direction of the white arrow is applied to the end of the terminal on the electric wire side, and the load when it is broken at the neck of the terminal Is measured as load bearing performance.
具体的には、表１に示す各温度で３時間の熱処理が施されたアルミニウム材料から作製された各端子について、耐荷重性能を測定した（試料数：各５個）。
Specifically, the load bearing performance was measured for each terminal made from an aluminum material that was heat-treated at each temperature shown in Table 1 for 3 hours (number of samples: 5 each).
並行して、各アルミニウム材料の引張強度、および伸びをＪＩＳ Ｚ ２２４１に規定する金属材料引張試験方法を用いて測定した。
In parallel, the tensile strength and elongation of each aluminum material were measured using a metal material tensile test method specified in JIS Z 2241.
各アルミニウム材料の耐荷重性能と引張強度の測定結果を表１に示す。なお、表１には、試料１～５の耐荷重性能の平均、最大値と平均との差（「＋」）、および平均と最小値との差（「－」）も併せて示した。
Table 1 shows the measurement results of load bearing performance and tensile strength of each aluminum material. Table 1 also shows the average load resistance performance of Samples 1 to 5, the difference between the maximum value and the average (“+”), and the difference between the average and the minimum value (“−”).
また、表１に示す結果に基づいて、図３に、耐荷重性能（Ｎ）を横軸（図３では荷重（Ｎ）と表示）、引張強度（ＭＰａ）を縦軸としてプロットし、耐荷重性能（平均）と引張強度との関係を示す。
Further, based on the results shown in Table 1, FIG. 3 is plotted with the load bearing performance (N) as the horizontal axis (shown as load (N) in FIG. 3) and the tensile strength (MPa) as the vertical axis. The relationship between performance (average) and tensile strength is shown.
また、各熱処理温度におけるアルミニウム材料の引張強度と伸びの測定結果を表２に示す。
In addition, Table 2 shows the measurement results of the tensile strength and elongation of the aluminum material at each heat treatment temperature.
図３より、耐荷重性能と引張強度とはよく相関していることが分かり、アルミニウム材料の引張強度により、コネクタ端子の構造に必要とされる強度（耐荷重性能）を代表させることができることが分かる。
FIG. 3 shows that the load bearing performance and the tensile strength are well correlated, and the tensile strength of the aluminum material can represent the strength (load bearing performance) required for the connector terminal structure. I understand.
そして、現状の銅製コネクタ端子における耐荷重性能と同等の耐荷重性能を維持するためには、１０Ｎ以上の耐荷重性能が必要であることから、アルミニウム材料の引張強度としては余裕を見込むと、２００ＭＰａ以上が好ましいことが分かる。
And, in order to maintain the load bearing performance equivalent to the load bearing performance of the current copper connector terminals, a load bearing performance of 10 N or more is necessary. It turns out that the above is preferable.
また、表１より、熱処理温度２２５℃の場合を除いて、熱処理温度が高くなるにつれて耐荷重性能が低下していることが分かり、表２より、熱処理温度が高くなるにつれて伸びが向上していることが分かる。
In addition, from Table 1, it can be seen that the load bearing performance decreases as the heat treatment temperature increases, except for the case where the heat treatment temperature is 225 ° C. From Table 2, the elongation increases as the heat treatment temperature increases. I understand that.
２．実験２（コネクタ端子の製造に必要とされるアルミニウム材料の曲げ加工性）
次に、アルミニウム製のコネクタ端子の製造に必要とされるアルミニウム材料の曲げ加工性について説明する。 2. Experiment 2 (Bendability of aluminum material required for manufacturing connector terminals)
Next, the bending workability of the aluminum material required for manufacturing the aluminum connector terminal will be described.
次に、アルミニウム製のコネクタ端子の製造に必要とされるアルミニウム材料の曲げ加工性について説明する。 2. Experiment 2 (Bendability of aluminum material required for manufacturing connector terminals)
Next, the bending workability of the aluminum material required for manufacturing the aluminum connector terminal will be described.
３０００系非熱処理型合金のＨ１４調質材（厚み：０．２５ｍｍ）を母材として、厚み０．３μｍのニッケル下地めっき、および厚み２．０μｍの錫めっきが施され、さらに図４に示した各温度で熱処理が施されたアルミニウム材料を用いて、図１に示す形状のオス端子を作製し、曲げ加工された頂点部の近傍をＳＥＭにより観察して、破断の発生などを確認した。
Using an H14 tempered material (thickness: 0.25 mm) of a 3000 series non-heat treatment type alloy as a base material, a nickel base plating with a thickness of 0.3 μm and a tin plating with a thickness of 2.0 μm were applied, and further shown in FIG. A male terminal having the shape shown in FIG. 1 was prepared using an aluminum material heat-treated at each temperature, and the vicinity of the bent vertex was observed with an SEM to confirm the occurrence of breakage and the like.
図４に観察したＳＥＭ写真を示す。なお、図４において下段に示す写真は、上段の写真で四角く囲った部分の拡大写真である。
Fig. 4 shows the observed SEM photograph. In addition, the photograph shown in the lower stage in FIG. 4 is an enlarged photograph of a portion surrounded by a square in the upper picture.
図４より、熱処理温度２２５℃の場合には破断が発生しているが、２５０℃以上では破断の発生が見られないことが分かる。
FIG. 4 shows that the fracture occurred when the heat treatment temperature was 225 ° C., but the fracture did not occur at 250 ° C. or higher.
以上の各実験の結果より、引張強度が２００ＭＰａ以上で、伸びが５％以上であるアルミニウム材料が、コネクタ端子用アルミニウム材料として好適なことが分かる。
From the results of the above experiments, it can be seen that an aluminum material having a tensile strength of 200 MPa or more and an elongation of 5% or more is suitable as an aluminum material for connector terminals.
即ち、実験１の結果より２００ＭＰａ以上の引張強度は３００℃以下の熱処理で得られることが分かる一方、実験２の結果より十分な曲げ加工性は２５０℃以上の熱処理で得られ、このときのアルミニウム材料の伸びは５％以上であることが表２より分かる。
That is, it can be seen from the results of Experiment 1 that a tensile strength of 200 MPa or more can be obtained by a heat treatment of 300 ° C. or less, whereas from the results of Experiment 2, a sufficient bending workability can be obtained by a heat treatment of 250 ° C. or more. It can be seen from Table 2 that the elongation of the material is 5% or more.
そして、このように、調質された適切な展伸用アルミニウム合金を用いて、２５０～３００℃での熱処理を施すことにより伸び５％以上が確保された引張強度２００ＭＰａ以上のアルミニウム材料が得られ、このようなアルミニウム材料を用いて、プレス加工などの曲げ加工を施すことにより、アルミニウム電線とのコネクタ端子として好ましいコネクタ端子を提供することができる。
In this way, an aluminum material having a tensile strength of 200 MPa or more in which an elongation of 5% or more is secured is obtained by performing heat treatment at 250 to 300 ° C. using a tempered appropriate aluminum alloy for extension. By using such an aluminum material and performing a bending process such as a press process, a connector terminal preferable as a connector terminal with an aluminum electric wire can be provided.
以上、本発明を実施の形態に基づき説明したが、本発明は上記の実施の形態に限定されるものではない。本発明と同一および均等の範囲内において、上記の実施の形態に対して種々の変更を加えることが可能である。
As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to said embodiment. Various modifications can be made to the above-described embodiment within the same and equivalent scope as the present invention.
１ オス端子の電気接触部
１ａ 曲げの頂点部 1Electrical contact part 1a of the male terminal
１ａ 曲げの頂点部 1
Claims (3)
- 自動車用コネクタ端子に用いられるコネクタ端子用アルミニウム材料であって、
引張強度が２００ＭＰａ以上であり、且つ伸びが５％以上であることを特徴とするコネクタ端子用アルミニウム材料。 It is an aluminum material for connector terminals used for connector terminals for automobiles,
An aluminum material for connector terminals, having a tensile strength of 200 MPa or more and an elongation of 5% or more. - 請求項１に記載のコネクタ端子用アルミニウム材料が用いられていることを特徴とする自動車用コネクタ端子。 A connector terminal for automobiles, wherein the aluminum material for connector terminals according to claim 1 is used.
- 前記自動車用コネクタ端子が、雄型コネクタ端子であることを特徴とする請求項２に記載の自動車用コネクタ端子。 3. The automobile connector terminal according to claim 2, wherein the automobile connector terminal is a male connector terminal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012275675A JP2014120376A (en) | 2012-12-18 | 2012-12-18 | Aluminum material for connector terminal, method for producing the same, and connector terminal for automobile |
| JP2012-275675 | 2012-12-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2014097692A1 true WO2014097692A1 (en) | 2014-06-26 |
| WO2014097692A8 WO2014097692A8 (en) | 2015-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2013/074487 WO2014097692A1 (en) | 2012-12-18 | 2013-09-11 | Aluminum material for connector terminals and connector terminal for automobiles |
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| Country | Link |
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| JP (1) | JP2014120376A (en) |
| WO (1) | WO2014097692A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002184508A (en) * | 2000-12-12 | 2002-06-28 | Yazaki Corp | Connector |
| WO2012011447A1 (en) * | 2010-07-20 | 2012-01-26 | 古河電気工業株式会社 | Aluminium alloy conductor and manufacturing method for same |
| WO2012077740A1 (en) * | 2010-12-08 | 2012-06-14 | 古河電気工業株式会社 | Crimp terminal, connection structure, and production method for same |
-
2012
- 2012-12-18 JP JP2012275675A patent/JP2014120376A/en active Pending
-
2013
- 2013-09-11 WO PCT/JP2013/074487 patent/WO2014097692A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002184508A (en) * | 2000-12-12 | 2002-06-28 | Yazaki Corp | Connector |
| WO2012011447A1 (en) * | 2010-07-20 | 2012-01-26 | 古河電気工業株式会社 | Aluminium alloy conductor and manufacturing method for same |
| WO2012077740A1 (en) * | 2010-12-08 | 2012-06-14 | 古河電気工業株式会社 | Crimp terminal, connection structure, and production method for same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014097692A8 (en) | 2015-03-26 |
| JP2014120376A (en) | 2014-06-30 |
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