JP2009289558A - Crimp terminal for aluminum wire - Google Patents

Crimp terminal for aluminum wire Download PDF

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JP2009289558A
JP2009289558A JP2008140215A JP2008140215A JP2009289558A JP 2009289558 A JP2009289558 A JP 2009289558A JP 2008140215 A JP2008140215 A JP 2008140215A JP 2008140215 A JP2008140215 A JP 2008140215A JP 2009289558 A JP2009289558 A JP 2009289558A
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wire
aluminum
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crimped
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JP5019626B2 (en
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Yuji Kanzaki
裕次 神崎
Koji Kawakami
耕司 川上
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Furukawa Electric Co Ltd
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<P>PROBLEM TO BE SOLVED: To provide a crimp terminal for an aluminum wire in which setting of an aluminum wire compression rate is easy, in which stable electric connection and tensile strength can be obtained, and which is high in reliability. <P>SOLUTION: In the crimp terminal crimped to the aluminum wire, a wire barrel part 3 has a strong crimp part 7 in which the height of both sidewalls 6 strongly crimped to the aluminum wire is high, and a weak crimp part 8 in which the height of both sidewalls 6 weakly crimped to the aluminum wire is low. The heights of both sidewalls 6 both in the strong crimp part 7 and the weak crimp part 8 are constant in a terminal longitudinal direction, and when the compression rate of the aluminum wire by the strong crimp part is ≥40% and ≤50%, a proportion of the length of the weak crimp part against the length of the wire barrel part is ≥45% and ≤50%. When the compression rate is >50% and ≤60%, a proportion of the length of the weak crimp part is ≥45% and 60%, and when the compression rate is >60% and ≤80%, a proportion of the length of the weak crimp part is ≥45% and ≤70%. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、アルミ電線の端部に取り付けられるアルミ電線用圧着端子に関するものである。   The present invention relates to a crimp terminal for an aluminum wire attached to an end of an aluminum wire.

アルミ電線は、銅電線に比べて、軟らかく強度が弱い上に、表面に強固な酸化皮膜を有している。このため、アルミ電線用の圧着端子は、強固な酸化皮膜を破壊して良好な電気的接続状態を得ようとしてワイヤバレル部をアルミ電線に強く圧着すると、アルミ電線が圧縮されすぎて圧着部の圧着強度が低下してしまい、逆に圧着部の圧着強度を確保しようとしてワイヤバレル部をアルミ電線に弱く圧着すると、酸化皮膜が破壊できないため良好な電気的接続状態を得ることができない、という問題がある。   Aluminum wires are softer and weaker than copper wires, and have a strong oxide film on the surface. For this reason, when crimping terminals for aluminum wires are used to destroy the strong oxide film and obtain a good electrical connection, the wire barrel portion is strongly crimped to the aluminum wires, the aluminum wires are compressed too much, On the other hand, if the wire barrel part is weakly crimped to the aluminum wire in an attempt to secure the crimping strength of the crimping part, the oxide film cannot be broken and a good electrical connection state cannot be obtained. There is.

この問題を解決するものとして、ワイヤバレル部の両側壁の高さを端子先端側（コンタクト部側）で高く、端子後端側（アルミ電線側）で低くした圧着端子が提案されている（特許文献１）。このような構成にすると、ワイヤバレル部の先端側はアルミ電線に強く圧着されるため良好な電気的接続状態が得られ、後端側はアルミ電線に弱く圧着されるため圧着部の圧着強度を確保できる、としている。   As a solution to this problem, a crimp terminal has been proposed in which the height of both side walls of the wire barrel portion is high on the tip end side (contact portion side) and low on the terminal rear end side (aluminum wire side) (patent) Reference 1). With such a configuration, the front end side of the wire barrel portion is strongly crimped to the aluminum electric wire, so that a good electrical connection state is obtained, and the rear end side is weakly crimped to the aluminum electric wire, so the crimping strength of the crimping portion is increased. It can be secured.

実願昭54-139354号（実開昭56-56169号）のマイクロフィルムMicrofilm of actual application No. 54-139354 (No. 56-56169)

しかし、特許文献１の圧着端子は、ワイヤバレル部の両側壁の高さが先端側から後端側に向かって徐々に低くなる構造であるため、強圧着部側のアルミ電線圧縮率の設定や弱圧着部側のアルミ電線圧縮率の設定が難しく、安定した電気的接続状態及び圧着強度が得にくいという問題がある。   However, the crimp terminal of Patent Document 1 has a structure in which the height of both side walls of the wire barrel portion gradually decreases from the front end side toward the rear end side. There is a problem that it is difficult to set the compression rate of the aluminum wire on the weak crimping portion side, and it is difficult to obtain a stable electrical connection state and a crimping strength.

本発明の目的は、強圧着部側のアルミ電線圧縮率の設定や弱圧着部側のアルミ電線圧縮率の設定が容易で、安定した電気的接続状態及び圧着強度が得られる信頼性の高いアルミ電線用圧着端子を提供することにある。   It is an object of the present invention to easily set the aluminum wire compressibility on the strong crimping portion side and the aluminum wire compressibility on the weak crimp portion side, and to provide a highly reliable aluminum that can obtain a stable electrical connection state and crimp strength. It is providing the crimp terminal for electric wires.

この目的を達成するため本発明は、断面略Ｕ字形のワイヤバレル部の両側壁の上端縁を内側に巻き込むようにしてアルミ電線に圧着されるアルミ電線用圧着端子において、
前記ワイヤバレル部は、アルミ電線の酸化皮膜を破壊する程度にアルミ電線に強く圧着される両側壁の高さが高い強圧着部と、アルミ電線に前記強圧着部よりも弱く圧着される両側壁の高さが前記強圧着部より低い弱圧着部とを有し、前記強圧着部及び弱圧着部ともに両側壁の高さが端子長手方向に一定であり、前記弱圧着部が強圧着部よりも端子後端側に存在するように形成されており、
前記強圧着部によるアルミ電線の圧縮率が４０％以上５０％以下のときは、前記ワイヤバレル部の長さに対する弱圧着部の長さの割合が４５％以上５０％以下であり、
前記圧縮率が５０％より大きく６０％以下のときは、前記弱圧着部の長さの割合が４５％以上６０％以下であり、
前記圧縮率が６０％より大きく８０％以下のときは、前記弱圧着部の長さの割合が４５％以上７０％以下である、
ことを特徴とするものである。 In order to achieve this object, the present invention provides a crimp terminal for an aluminum wire that is crimped to an aluminum wire so that the upper end edges of both side walls of the wire barrel portion having a substantially U-shaped cross section are wound inside.
The wire barrel part is a strong pressure-bonding part whose both side walls are strongly crimped to the aluminum wire to such an extent that the oxide film of the aluminum wire is broken, and both side walls which are crimped to the aluminum wire weaker than the strong pressure-bonding part. The height of both side walls is constant in the longitudinal direction of the terminal in both the strong pressure-bonding portion and the weak pressure-bonding portion, and the weak pressure-bonding portion is higher than the strong pressure-bonding portion. Is also formed on the rear end side of the terminal,
When the compression ratio of the aluminum electric wire by the strong crimping portion is 40% or more and 50% or less, the ratio of the length of the weak crimping portion to the length of the wire barrel portion is 45% or more and 50% or less,
When the compression ratio is greater than 50% and 60% or less, the ratio of the length of the weakly crimped portion is 45% or more and 60% or less,
When the compression ratio is greater than 60% and 80% or less, the ratio of the length of the weakly crimped portion is 45% or more and 70% or less.
It is characterized by this.

また、本発明は、断面略Ｕ字形のワイヤバレル部の両側壁の上端縁を内側に巻き込むようにしてアルミ電線に圧着されるアルミ電線用圧着端子において、
前記ワイヤバレル部は、アルミ電線の酸化皮膜を破壊する程度にアルミ電線に強く圧着される両側壁の高さが高い強圧着部と、アルミ電線に前記強圧着部よりも弱く圧着される両側壁の高さが前記強圧着部より低い弱圧着部とを有し、前記強圧着部及び弱圧着部ともに両側壁の高さが端子長手方向に一定であり、前記弱圧着部が強圧着部よりも端子後端側に存在するように形成されており、
前記強圧着部によるアルミ電線の圧縮率が４０％以上４５％未満のときは、前記ワイヤバレル部の長さに対する弱圧着部の長さの割合が４５％以上５０％未満であり、
前記圧縮率が４５％より大きく６０％以下のときは、前記弱圧着部の長さの割合が４５％以上５０％以下であり、
前記圧縮率が６０％より大きく６５％以下のときは、前記弱圧着部の長さの割合が４５％以上６０％以下であり、
前記圧縮率が６５％より大きく８０％以下のときは、前記弱圧着部の長さの割合が４５％以上７０％以下である、
ことが好ましい。 Further, the present invention provides a crimp terminal for an aluminum electric wire that is crimped to an aluminum electric wire so that the upper end edges of both side walls of the wire barrel portion having a substantially U-shaped cross section are wound inside.
The wire barrel part is a strong pressure-bonding part whose both side walls are strongly crimped to the aluminum wire to such an extent that the oxide film of the aluminum wire is broken, and both side walls which are crimped to the aluminum wire weaker than the strong pressure-bonding part. The height of both side walls is constant in the longitudinal direction of the terminal in both the strong pressure-bonding portion and the weak pressure-bonding portion, and the weak pressure-bonding portion is higher than the strong pressure-bonding portion. Is also formed on the rear end side of the terminal,
When the compression ratio of the aluminum electric wire by the strong crimping portion is 40% or more and less than 45%, the ratio of the length of the weak crimping portion to the length of the wire barrel portion is 45% or more and less than 50%,
When the compression ratio is greater than 45% and 60% or less, the ratio of the length of the weakly crimped portion is 45% or more and 50% or less,
When the compression ratio is greater than 60% and 65% or less, the ratio of the length of the weakly crimped portion is 45% or more and 60% or less,
When the compression ratio is greater than 65% and 80% or less, the ratio of the length of the weakly crimped portion is 45% or more and 70% or less.
It is preferable.

本発明によれば、ワイヤバレル部の強圧着部は、両側壁の高さが一定であるため、一定区間で一定の強さでアルミ電線に強く圧着されるため、一定区間でアルミ電線の酸化皮膜を破壊して良好な電気的接続状態を安定して得ることができる。また、ワイヤバレル部の弱圧着部も、両側壁の高さが一定であるため、一定区間で一定の強さでアルミ電線に弱く圧着されるため、所要の圧着強度を安定して得ることができる。さらに、強圧着部によるアルミ電線の圧縮率と、ワイヤバレル部の長さに対する弱圧着部の長さの割合との関係を、請求項１のように設定すると、良好な電気的接続状態と圧着強度５０％以上を得ることができ、請求項２のように設定すると、良好な電気的接続状態と圧着強度６０％以上を得ることができる。   According to the present invention, the high pressure bonding portion of the wire barrel portion has a constant height on both side walls, so that it is strongly bonded to the aluminum wire with a certain strength in a certain section. It is possible to stably obtain a good electrical connection state by breaking the film. Also, the weak crimping part of the wire barrel part has a constant height on both side walls, so it is weakly crimped to the aluminum wire with a certain strength in a certain section, so that the required crimping strength can be stably obtained. it can. Furthermore, when the relationship between the compression ratio of the aluminum electric wire by the strong crimping portion and the ratio of the length of the weak crimping portion to the length of the wire barrel portion is set as in claim 1, a good electrical connection state and crimping are achieved. A strength of 50% or more can be obtained, and when set as in claim 2, a good electrical connection state and a crimping strength of 60% or more can be obtained.

図１は本発明に係るアルミ電線用圧着端子の一実施形態を示す。この圧着端子１は、先端側から順に、コンタクト部２、ワイヤバレル部３、インシュレーションバレル部４を有している。（Ａ）は圧着端子１の斜視図、（Ｂ）は圧着端子１のワイヤバレル部３とインシュレーションバレル部４の展開図である。コンタクト部２は、相手方端子と接触する部分で、図示の例では雌型接触子の形態であるが、雄型接触子やネジ止め板部などの形態であってもよい。ワイヤバレル部３及びインシュレーションバレル部４は断面略Ｕ字形で、ワイヤバレル部３の内面にはセレーション５が形成されている。ワイヤバレル部３は両側壁６の上端縁を内側に巻き込むようにしてアルミ電線に圧着される。インシュレーションバレル部４も同様にしてアルミ電線の絶縁被覆に圧着される。アルミ電線用圧着端子１の材質は、例えば通常の端子用銅合金に錫、インジウム又はそれらの合金などのメッキを施したものである。   FIG. 1 shows an embodiment of a crimp terminal for an aluminum electric wire according to the present invention. The crimp terminal 1 includes a contact portion 2, a wire barrel portion 3, and an insulation barrel portion 4 in order from the distal end side. (A) is a perspective view of the crimp terminal 1, and (B) is a development view of the wire barrel portion 3 and the insulation barrel portion 4 of the crimp terminal 1. The contact portion 2 is a portion that comes into contact with the mating terminal and is in the form of a female contact in the illustrated example, but may be in the form of a male contact or a screwing plate portion. The wire barrel portion 3 and the insulation barrel portion 4 are substantially U-shaped in cross section, and serrations 5 are formed on the inner surface of the wire barrel portion 3. The wire barrel portion 3 is crimped to the aluminum electric wire so that the upper end edges of the side walls 6 are wound inside. The insulation barrel part 4 is also crimped | bonded to the insulation coating of an aluminum electric wire similarly. The material of the crimp terminal 1 for an aluminum wire is, for example, an ordinary copper alloy for terminals plated with tin, indium, or an alloy thereof.

この圧着端子１のワイヤバレル部３は、アルミ電線の酸化皮膜を破壊する程度にアルミ電線に強く圧着される両側壁６の高さが高い強圧着部７と、アルミ電線に前記強圧着部７よりも弱く圧着される両側壁６の高さが強圧着部７より低い弱圧着部８とを有している。強圧着部７及び弱圧着部８とも両側壁６の高さは端子長手方向に一定である。弱圧着部８は強圧着部７よりも端子後端側（インシュレーションバレル部４側）に形成されている。   The wire barrel portion 3 of the crimp terminal 1 includes a strong crimp portion 7 having both side walls 6 that are strongly crimped to the aluminum wire to such an extent that the oxide film of the aluminum wire is broken, and the strong crimp portion 7 on the aluminum wire. The both side walls 6 to be crimped more weakly have a weak crimping portion 8 whose height is lower than that of the strong crimping portion 7. The height of both side walls 6 is constant in the longitudinal direction of the terminal in both the strong crimp portion 7 and the weak crimp portion 8. The weak pressure bonding part 8 is formed on the terminal rear end side (insulation barrel part 4 side) of the strong pressure bonding part 7.

図２は図１の圧着端子１をアルミ電線１１の端部に圧着した状態を示す。ワイヤバレル部３はアルミ電線１１に圧着され、インシュレーションバレル部４はアルミ電線１１の絶縁被覆１２に圧着される。ワイヤバレル部４の強圧着部７は同図（Ｂ）に示すように、アルミ電線１１の酸化皮膜を破壊する程度にアルミ電線１１に強く圧着されて良好な電気的接続状態を確保し、弱圧着部８は同図（Ｃ）に示すように、アルミ電線１１に強圧着部７よりも弱く圧着されて圧着部の圧着強度を確保している。   FIG. 2 shows a state where the crimp terminal 1 of FIG. 1 is crimped to the end of the aluminum electric wire 11. The wire barrel portion 3 is crimped to the aluminum electric wire 11, and the insulation barrel portion 4 is crimped to the insulating coating 12 of the aluminum electric wire 11. As shown in FIG. 2B, the strong pressure bonding portion 7 of the wire barrel portion 4 is strongly pressed to the aluminum electric wire 11 to such an extent that the oxide film of the aluminum electric wire 11 is broken to ensure a good electrical connection state. As shown in FIG. 2C, the crimping portion 8 is crimped to the aluminum wire 11 weaker than the strong crimping portion 7 to ensure the crimping strength of the crimping portion.

図１の圧着端子１を図２のようにアルミ電線９に圧着した圧着部について、強圧着部７によるアルミ電線１１の圧縮率と、ワイヤバレル部３の長さに対する弱圧着部８の長さの割合とを変化させたときの、圧着部の圧着強度を調べた。その結果を表１に示す。供試アルミ電線の断面積は０．７５mm２である。 1, the compression ratio of the aluminum wire 11 by the strong pressure bonding portion 7 and the length of the weak pressure bonding portion 8 with respect to the length of the wire barrel portion 3 for the pressure bonding portion where the crimp terminal 1 of FIG. The pressure-bonding strength of the pressure-bonded part when the ratio of the pressure was changed was examined. The results are shown in Table 1. The cross-sectional area of the test aluminum wire is 0.75 mm 2 .

圧縮率は、圧着前のアルミ電線の断面積を１００％としたときの圧着後のアルミ電線の断面積の割合である（圧縮率の数値が小さいほど強く圧縮されている）。
ワイヤバレル部３の長さに対する弱圧着部８の長さの割合Ｌは、例えばＬ＝１００％はワイヤバレル部が弱圧着部のみの場合であり、Ｌ＝５０％は弱圧着部の長さがワイヤバレル部の長さの半分の場合である。なお、ワイヤバレル部の長さは３mmである。
圧着強度は、アルミ電線の引張強度（１００％）に対する、圧着部の引張試験（圧着端子とアルミ電線を互いに反対方向に引っ張る試験）で圧着部が破断（アルミ電線の引き抜けを含む）したときの強度（引張荷重）の割合である。 The compression rate is the ratio of the cross-sectional area of the aluminum wire after crimping when the cross-sectional area of the aluminum wire before crimping is 100% (the smaller the value of the compression rate, the stronger the compression is).
The ratio L of the length of the weak pressure bonding portion 8 to the length of the wire barrel portion 3 is, for example, L = 100% when the wire barrel portion is only the weak pressure bonding portion, and L = 50% is the length of the weak pressure bonding portion. Is half the length of the wire barrel. Note that the length of the wire barrel portion is 3 mm.
The crimping strength is when the crimped portion is broken (including pulling out of the aluminum wire) in the tensile test of the crimped portion (test that pulls the crimping terminal and the aluminum wire in opposite directions) against the tensile strength (100%) of the aluminum wire. Strength (tensile load) ratio.

Figure 2009289558
Figure 2009289558

この試験結果をグラフに表すと図３のようになる。一般的な圧着端子特性の目安として、圧着強度は５０％以上必要である。   This test result is shown in a graph as shown in FIG. As a standard of general crimp terminal characteristics, the crimp strength needs to be 50% or more.

次に、図１の圧着端子１を図２のようにアルミ電線９に圧着した圧着部について、強圧着部７によるアルミ電線１１の圧縮率と、温度サイクルを加えときの圧着部の接触抵抗と関係を調べた。その結果を表２に示す。供試アルミ電線の断面積は０．７５mm２である。温度サイクルは、−４０℃×３０分←→１２０℃×３０分を２４０サイクルである。 Next, with respect to the crimped portion where the crimp terminal 1 of FIG. 1 is crimped to the aluminum wire 9 as shown in FIG. 2, the compressibility of the aluminum wire 11 by the strong crimp portion 7 and the contact resistance of the crimped portion when a temperature cycle is applied I investigated the relationship. The results are shown in Table 2. The cross-sectional area of the test aluminum wire is 0.75 mm 2 . The temperature cycle is 240 cycles of −40 ° C. × 30 minutes ← → 120 ° C. × 30 minutes.

Figure 2009289558
Figure 2009289558

この試験結果をグラフに表すと図４のようになる。なお、圧着部の接触抵抗は、実質的に強圧着部によるアルミ電線の圧縮率のみに依存し、ワイヤバレル部３の長さに対する弱圧着部８の長さの割合Ｌを変化させても殆ど変化しない   This test result is represented in a graph as shown in FIG. The contact resistance of the crimping part depends substantially only on the compression rate of the aluminum wire by the strong crimping part, and even if the ratio L of the length of the weak crimping part 8 to the length of the wire barrel part 3 is changed. It does not change

以上の試験結果を総合すると、圧着部の良好な電気的接続状態を得るためには、アルミ電線の圧縮率を８０％以下にする必要がある。アルミ電線の圧縮率の数値が大きいと（アルミ電線の断面積減少率が小さいと）、酸化が発生しやすくなり、温度サイクル後の接触抵抗が大きくなる。   Summing up the above test results, in order to obtain a good electrical connection state of the crimping portion, the compression rate of the aluminum electric wire needs to be 80% or less. When the numerical value of the compression rate of the aluminum wire is large (when the cross-sectional area reduction rate of the aluminum wire is small), oxidation tends to occur and the contact resistance after the temperature cycle increases.

また、強圧着部によるアルミ電線の圧縮率が４０％以上５０％以下のときは、前記ワイヤバレル部の長さに対する弱圧着部の長さの割合を４５％以上５０％以下とし、前記圧縮率が５０％より大きく６０％以下のときは、前記弱圧着部の長さの割合を４５％以上６０％以下とし、前記圧縮率が６０％より大きく８０％以下のときは、前記弱圧着部の長さの割合を４５％以上７０％以下とすれば、圧着強度５０％以上を得ることができる。   Further, when the compression rate of the aluminum electric wire by the strong crimping portion is 40% or more and 50% or less, the ratio of the length of the weak crimping portion to the length of the wire barrel portion is 45% or more and 50% or less, and the compression rate Is greater than 50% and less than or equal to 60%, the ratio of the length of the weakly crimped portion is 45% or more and 60% or less, and when the compression ratio is greater than 60% and not more than 80%, If the ratio of the length is 45% or more and 70% or less, a compression strength of 50% or more can be obtained.

また、強圧着部によるアルミ電線の圧縮率が４０％以上４５％未満のときは、前記ワイヤバレル部の長さに対する弱圧着部の長さの割合を４５％以上５０％未満とし、前記圧縮率が４５％より大きく６０％以下のときは、前記弱圧着部の長さの割合を４５％以上５０％以下とし、前記圧縮率が６０％より大きく６５％以下のときは、前記弱圧着部の長さの割合を４５％以上６０％以下とし、前記圧縮率が６５％より大きく８０％以下のときは、前記弱圧着部の長さの割合を４５％以上７０％以下とすれば、圧着強度６０％以上を得ることができる。圧着強度６０％以上が得られれば、製造時のバラツキ等を考慮しても、十分な圧着強度を確保することができる。
また、上記の結果は、アルミ電線の断面積が０．７５mm２の場合であるが、アルミ電線の断面積が０．５mm２の場合でも、上記の結果と同じ特性が確認できた。 Further, when the compression rate of the aluminum electric wire by the strong crimping portion is 40% or more and less than 45%, the ratio of the length of the weak crimping portion to the length of the wire barrel portion is set to 45% or more and less than 50%, and the compression rate Is greater than 45% and less than or equal to 60%, the ratio of the length of the weakly crimped portion is 45% or more and 50% or less, and when the compression ratio is greater than 60% and not more than 65%, When the length ratio is 45% or more and 60% or less, and the compression ratio is greater than 65% and 80% or less, the length ratio of the weak press-bonding portion is 45% or more and 70% or less, and the compression strength 60% or more can be obtained. If a pressure bonding strength of 60% or more is obtained, a sufficient pressure bonding strength can be ensured even in consideration of variations during manufacturing.
Moreover, although the above result is a case where the cross-sectional area of an aluminum electric wire is 0.75 mm < 2 >, even when the cross-sectional area of the aluminum electric wire is 0.5 mm < 2 >, the same characteristics as the above results could be confirmed.

図５は本発明に係るアルミ電線用圧着端子の他の実施形態を示す。この圧着端子１は、ワイヤバレル部３の長手方向の中間部に強圧着部７を設け、両端部に弱圧着部８を設けたものである。それ以外の構成は図１の圧着端子と同じであるので、同一部分には同一符号を付して説明を省略する。   FIG. 5 shows another embodiment of the crimp terminal for an aluminum wire according to the present invention. This crimp terminal 1 is provided with a strong crimp part 7 at the middle part in the longitudinal direction of the wire barrel part 3 and a weak crimp part 8 at both ends. Since the other configuration is the same as that of the crimp terminal in FIG. 1, the same parts are denoted by the same reference numerals and description thereof is omitted.

本発明に係るアルミ電線用圧着端子の一実施形態を示す、（Ａ）は斜視図、（Ｂ）はワイヤバレル部及びインシュレーションバレル部の展開図。BRIEF DESCRIPTION OF THE DRAWINGS One Embodiment of the crimp terminal for aluminum electric wires which concerns on this invention is shown, (A) is a perspective view, (B) is an expanded view of a wire barrel part and an insulation barrel part. 図１の圧着端子をアルミ電線に圧着した状態を示す、（Ａ）は側面図、（Ｂ）は（Ａ）のＢ−Ｂ線拡大断面図、（Ｃ）は（Ａ）のＣ−Ｃ線拡大断面図。1 shows a state where the crimp terminal of FIG. 1 is crimped to an aluminum electric wire, (A) is a side view, (B) is an enlarged sectional view taken along line BB of (A), and (C) is a CC line of (A). FIG. 図１の圧着端子によるアルミ電線の圧縮率と、圧着部の圧着強度との関係を示すグラフ。The graph which shows the relationship between the compression rate of the aluminum electric wire by the crimp terminal of FIG. 1, and the crimping | compression-bonding strength of a crimp part. 図１の圧着端子によるアルミ電線の圧縮率と、圧着部の接触抵抗との関係を示すグラフ。The graph which shows the relationship between the compression rate of the aluminum electric wire by the crimp terminal of FIG. 1, and the contact resistance of a crimp part. 本発明に係るアルミ電線用圧着端子の他の実施形態を示す、ワイヤバレル部及びインシュレーションバレル部の展開図。The expanded view of the wire barrel part and the insulation barrel part which shows other embodiment of the crimp terminal for aluminum electric wires which concerns on this invention.

符号の説明Explanation of symbols

１：アルミ電線用圧着端子
２：コンタクト部
３：ワイヤバレル部
４：インシュレーションバレル部
５：セレーション
６：側壁
７：強圧着部
８：弱圧着部
１１：アルミ電線
１２：絶縁被覆 1: Crimp terminal 2 for aluminum wire 2: Contact portion 3: Wire barrel portion 4: Insulation barrel portion 5: Serration 6: Side wall 7: Strong crimp portion 8: Weak crimp portion 11: Aluminum wire 12: Insulation coating

Claims (2)

断面略Ｕ字形のワイヤバレル部の両側壁の上端縁を内側に巻き込むようにしてアルミ電線に圧着されるアルミ電線用圧着端子において、
前記ワイヤバレル部は、アルミ電線の酸化皮膜を破壊する程度にアルミ電線に強く圧着される両側壁の高さが高い強圧着部と、アルミ電線に前記強圧着部よりも弱く圧着される両側壁の高さが前記強圧着部より低い弱圧着部とを有し、前記強圧着部及び弱圧着部ともに両側壁の高さが端子長手方向に一定であり、前記弱圧着部が強圧着部よりも端子後端側に存在するように形成されており、
前記強圧着部によるアルミ電線の圧縮率が４０％以上５０％以下のときは、前記ワイヤバレル部の長さに対する弱圧着部の長さの割合が４５％以上５０％以下であり、
前記圧縮率が５０％より大きく６０％以下のときは、前記弱圧着部の長さの割合が４５％以上６０％以下であり、
前記圧縮率が６０％より大きく８０％以下のときは、前記弱圧着部の長さの割合が４５％以上７０％以下である、
ことを特徴とするアルミ電線用圧着端子。 In a crimp terminal for an aluminum wire that is crimped to an aluminum wire so that the upper end edges of both side walls of the wire barrel portion having a substantially U-shaped cross section are wound inside,
The wire barrel part is a strong pressure-bonding part whose both side walls are strongly crimped to the aluminum wire to such an extent that the oxide film of the aluminum wire is broken, and both side walls which are crimped to the aluminum wire weaker than the strong pressure-bonding part. The height of both side walls is constant in the longitudinal direction of the terminal in both the strong pressure-bonding portion and the weak pressure-bonding portion, and the weak pressure-bonding portion is higher than the strong pressure-bonding portion. Is also formed on the rear end side of the terminal,
When the compression ratio of the aluminum electric wire by the strong crimping portion is 40% or more and 50% or less, the ratio of the length of the weak crimping portion to the length of the wire barrel portion is 45% or more and 50% or less,
When the compression ratio is greater than 50% and 60% or less, the ratio of the length of the weakly crimped portion is 45% or more and 60% or less,
When the compression ratio is greater than 60% and 80% or less, the ratio of the length of the weakly crimped portion is 45% or more and 70% or less.
This is a crimp terminal for aluminum wires. 断面略Ｕ字形のワイヤバレル部の両側壁の上端縁を内側に巻き込むようにしてアルミ電線に圧着されるアルミ電線用圧着端子において、
前記ワイヤバレル部は、アルミ電線の酸化皮膜を破壊する程度にアルミ電線に強く圧着される両側壁の高さが高い強圧着部と、アルミ電線に前記強圧着部よりも弱く圧着される両側壁の高さが前記強圧着部より低い弱圧着部とを有し、前記強圧着部及び弱圧着部ともに両側壁の高さが端子長手方向に一定であり、前記弱圧着部が強圧着部よりも端子後端側に存在するように形成されており、
前記強圧着部によるアルミ電線の圧縮率が４０％以上４５％未満のときは、前記ワイヤバレル部の長さに対する弱圧着部の長さの割合が４５％以上５０％未満であり、
前記圧縮率が４５％より大きく６０％以下のときは、前記弱圧着部の長さの割合が４５％以上５０％以下であり、
前記圧縮率が６０％より大きく６５％以下のときは、前記弱圧着部の長さの割合が４５％以上６０％以下であり、
前記圧縮率が６５％より大きく８０％以下のときは、前記弱圧着部の長さの割合が４５％以上７０％以下である、
ことを特徴とするアルミ電線用圧着端子。 In a crimp terminal for an aluminum wire that is crimped to an aluminum wire so that the upper end edges of both side walls of the wire barrel portion having a substantially U-shaped cross section are wound inside,
The wire barrel part is a strong pressure-bonding part whose both side walls are strongly crimped to the aluminum wire to such an extent that the oxide film of the aluminum wire is broken, and both side walls which are crimped to the aluminum wire weaker than the strong pressure-bonding part. The height of both side walls is constant in the longitudinal direction of the terminal in both the strong pressure-bonding portion and the weak pressure-bonding portion, and the weak pressure-bonding portion is higher than the strong pressure-bonding portion. Is also formed on the rear end side of the terminal,
When the compression ratio of the aluminum electric wire by the strong crimping portion is 40% or more and less than 45%, the ratio of the length of the weak crimping portion to the length of the wire barrel portion is 45% or more and less than 50%,
When the compression ratio is greater than 45% and 60% or less, the ratio of the length of the weakly crimped portion is 45% or more and 50% or less,
When the compression ratio is greater than 60% and 65% or less, the ratio of the length of the weakly crimped portion is 45% or more and 60% or less,
When the compression ratio is greater than 65% and 80% or less, the ratio of the length of the weakly crimped portion is 45% or more and 70% or less.
This is a crimp terminal for aluminum wires.
JP2008140215A 2008-05-29 2008-05-29 Crimp terminal for aluminum wire Active JP5019626B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012059629A (en) * 2010-09-10 2012-03-22 Furukawa Electric Co Ltd:The Connection structure and terminal
JP5369249B1 (en) * 2013-08-06 2013-12-18 日新製鋼株式会社 Crimp terminal and electric wire with crimp terminal

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047386A (en) * 1983-08-25 1985-03-14 日本端子株式会社 Method of pressure-connecting connection terminal
JP2009176547A (en) * 2008-01-24 2009-08-06 Furukawa Electric Co Ltd:The Terminal crimping structure to aluminum electric wire

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047386A (en) * 1983-08-25 1985-03-14 日本端子株式会社 Method of pressure-connecting connection terminal
JP2009176547A (en) * 2008-01-24 2009-08-06 Furukawa Electric Co Ltd:The Terminal crimping structure to aluminum electric wire

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012059629A (en) * 2010-09-10 2012-03-22 Furukawa Electric Co Ltd:The Connection structure and terminal
JP5369249B1 (en) * 2013-08-06 2013-12-18 日新製鋼株式会社 Crimp terminal and electric wire with crimp terminal
WO2015019462A1 (en) * 2013-08-06 2015-02-12 日新製鋼株式会社 Crimp terminal and crimp-terminal-fitted electrical wire
JP2015032543A (en) * 2013-08-06 2015-02-16 日新製鋼株式会社 Crimp terminal and wire with crimp terminal
EP3032652A4 (en) * 2013-08-06 2017-06-07 Nisshin Steel Co., Ltd. Crimp terminal and crimp-terminal-fitted electrical wire
US9787003B2 (en) 2013-08-06 2017-10-10 Nisshin Steel Co., Ltd. Crimp terminal and electric wire with crimp terminal

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