JPH01661A - Wire connection structure of crimp terminal - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は圧着端子の電線導体圧着部における電線接続構
造に関するものであり、詳しくは、電線圧着部の電気抵
抗が小さ（、且つ、電線の圧着作業が容易となる電線接
続構造に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a wire connection structure in a wire conductor crimping portion of a crimp terminal, and more specifically, the electric wire crimping portion has a low electrical resistance (and the wire conductor has a low electrical resistance). The present invention relates to a wire connection structure that facilitates crimping work.

〔従来の技術と問題点〕　　　　、 従来の圧着端子を第４図に示す。[Conventional technology and problems] A conventional crimp terminal is shown in FIG.

同図に示すように、圧着端子Ａは接触部１と、接触部１
に連接する電線導体圧着部２と、電線導体圧着部２に連
接される被覆加締部３とによって構成される。As shown in the figure, the crimp terminal A has a contact portion 1 and a contact portion 1.
The wire conductor crimping part 2 is connected to the wire conductor crimping part 2, and the covering crimping part 3 is connected to the wire conductor crimping part 2.

電線導体圧着部２及び被覆加締部３は、ともに、接触部
１に連らなる板状体の両端を上方に屈折し、更にその端
部を内側に湾曲して弾性挾持腕２ａ及び３ａを構成し、
底壁となるもとの板状体と弾性挾持腕２ａ及び３ａによ
って、内部にそれぞれ電線の導体である芯線４及び電線
の被覆５を収容する空間が形成される。Both the wire conductor crimping part 2 and the covering crimping part 3 bend both ends of the plate-shaped body connected to the contact part 1 upward, and further curve the ends inward to form elastic clamping arms 2a and 3a. configure,
The original plate-shaped body serving as the bottom wall and the elastic clamping arms 2a and 3a form a space therein for accommodating the core wire 4 and the wire sheath 5, which are the conductors of the electric wire, respectively.

以上のように構成された圧着端子Ａは、電線導体圧着部
２に被覆５を除去した芯線４が、被覆加締部３に被覆５
のままの電線が挿入され、それぞれ弾性挾持腕２ａ及び
３ａを加締して電線が接続される。□　。In the crimp terminal A configured as above, the core wire 4 with the sheath 5 removed is attached to the wire conductor crimping part 2, and the sheath 5 is attached to the sheath crimp part 3.
The electric wires are inserted as they are, and the elastic clamping arms 2a and 3a are tightened to connect the electric wires. □.

工具の締付力により、弾性挾持腕２ａは塑性変形して芯
１４に密着し、工具の締付力を除いた後も弾性挾持腕２
ａに残留する弾性力で芯線４に押圧接触する。Due to the tightening force of the tool, the elastic clamping arm 2a is plastically deformed and comes into close contact with the core 14, and even after the tightening force of the tool is removed, the elastic clamping arm 2a
It presses into contact with the core wire 4 by the elastic force remaining in a.

この弾性挾持腕２ａの芯線４の押圧接触力は、工具締付
による弾性挾持腕２ａの塑性変形量に左右され、塑性変
形量が不足すれば芯線４の接触力が不充分となり、電線
導体圧着部２と芯線４との間の電気抵抗が増大し、発熱
、焼損の事故が生じたり、或は、接続している機器側に
誤動作を生ずる原因となる。The pressing contact force of the core wire 4 of the elastic clamping arm 2a depends on the amount of plastic deformation of the elastic clamping arm 2a due to tool tightening, and if the amount of plastic deformation is insufficient, the contact force of the core wire 4 will be insufficient, and the wire conductor will be crimped. The electrical resistance between the portion 2 and the core wire 4 increases, causing accidents such as heat generation and burnout, or malfunction of connected equipment.

そこで、第５図に示すように、電線導体圧着部２の高さ
Ｈに寸法公差を設けて電線導体圧着に過不足がないよう
に品質管理されている。Therefore, as shown in FIG. 5, a dimensional tolerance is provided for the height H of the wire conductor crimping portion 2 to control the quality so that there is no excess or deficiency in the wire conductor crimping.

しかし、このようにきびしい公差を設ければ、品質が安
定する反面工数の増大は避けられない。However, if such tight tolerances are provided, quality is stabilized, but an increase in man-hours is unavoidable.

又、芯線４は断面形状が略円形であり、電線圧着部２と
芯線４との間、及び芯線４相互間には多数の空孔６を生
じ、芯線４の外表面と電線導体圧着部２の内周面に酸化
皮膜等の絶縁物が発生し、電気抵抗が経時的に増大する
。Further, the core wire 4 has a substantially circular cross-sectional shape, and a large number of holes 6 are formed between the wire crimping portion 2 and the core wire 4 and between the core wires 4, so that the outer surface of the core wire 4 and the wire conductor crimping portion 2 are formed. An insulating material such as an oxide film is formed on the inner peripheral surface of the wire, and the electrical resistance increases over time.

電気抵抗を減少するために半田付けを施工することがあ
るが、半田付けの工数が必要となり、半田付不良がなく
ても、半田付部は硬化によって脆くなり振動等が加わる
と容易に断線する。Soldering is sometimes performed to reduce electrical resistance, but soldering requires a lot of man-hours, and even if there is no soldering defect, the soldered part becomes brittle due to hardening and easily breaks when subjected to vibrations, etc. .

本発明は、かかる問題点に着目してなされたもので、電
線導体圧着部２にきびしい寸法公差を設ける必要がなく
、又、芯線４と電線導体圧着部２との間及び芯線２相互
間に絶縁物を生じることなく、極めて電気抵抗の少ない
電線接続構造を提供するものである。The present invention has been made with attention to such problems, and there is no need to provide strict dimensional tolerances for the wire conductor crimping portion 2, and between the core wire 4 and the wire conductor crimping portion 2 and between the core wires 2. The present invention provides a wire connection structure with extremely low electrical resistance without forming an insulator.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は圧着端子の電線導体圧着部の内部又は電線導体
のいずれかに導電性ペーストおよび（または）導電性オ
イルを塗布した後に、上記電線導体圧着部に上記電線導
体を挿入して上記電線導体圧着部と電線導体部との間に
生ずる空隙内を導電性ペーストおよび（または）導電性
オイルにて充満する構造とした。The present invention applies conductive paste and/or conductive oil either inside the wire conductor crimping part of the crimp terminal or to the wire conductor, and then inserting the wire conductor into the wire conductor crimping part. The structure is such that the gap created between the crimping part and the wire conductor part is filled with conductive paste and/or conductive oil.

〔作　用〕[For production]

電線導体圧着部の内周面と電線導体である芯線との間及
び上記電線芯線相互間に生ずる空隙に導電性ペーストを
充満しているため、電線導体圧着部と電線芯線との接続
部の電気抵抗は大巾に減少し、電線導体圧着部の寸法が
公差から若干外れても電気抵抗の減少はない、導電性ペ
ーストの代りに、導電性オイルまたは両者の混合物を使
用した場合も同様である。Since the conductive paste is filled in the voids created between the inner circumferential surface of the wire conductor crimping portion and the core wire that is the wire conductor, and between the wire core wires, electrical conductivity at the connection portion between the wire conductor crimping portion and the wire core wire is filled with conductive paste. The electrical resistance decreases significantly, and even if the dimensions of the wire conductor crimping part deviate slightly from the tolerance, the electrical resistance does not decrease.The same is true when using conductive oil or a mixture of both instead of conductive paste. .

又、空隙は導電線ペーストおよび（または）導電性オイ
ルによって充填されているため酸化等により電線接続部
の電気抵抗が増加することもない。Furthermore, since the voids are filled with the conductive wire paste and/or conductive oil, the electrical resistance of the wire connection portion does not increase due to oxidation or the like.

〔実施例〕〔Example〕

本発明の実施例を図面を参照して説明する。 Embodiments of the present invention will be described with reference to the drawings.

なお、従来例と同一部品には同一符号を付す。Note that the same parts as in the conventional example are given the same reference numerals.

第１図は本発明の圧着端子の斜視図を示し、圧着端子Ａ
は、接触部１と、接触部１に接続される電線導体圧着部
２と、電線導体圧着部２に連接される被覆加締部３とに
よって構成されることは従来例と同様であるが、電線導
体圧着部２の内部又は電線導体圧着部２に挿入される電
線芯線４に導電性ペーストを塗布した後に、電線導体圧
着部２内に電線を挿入して電線導体圧着部２を加締する
ことにより、導電性ペーストが電線芯線４と電線導体圧
着部２との間に生じている空隙及び電線芯線４相互間の
空隙に充填されることが従来例と相異する。FIG. 1 shows a perspective view of the crimp terminal of the present invention, and shows a crimp terminal A.
This is similar to the conventional example in that it is composed of a contact part 1, a wire conductor crimping part 2 connected to the contact part 1, and a covering crimping part 3 connected to the wire conductor crimping part 2. After applying conductive paste to the inside of the electric wire conductor crimping part 2 or to the electric wire core wire 4 inserted into the electric wire conductor crimping part 2, the electric wire is inserted into the electric wire conductor crimping part 2 and the electric wire conductor crimping part 2 is swaged. This is different from the conventional example in that the conductive paste is filled in the gap between the wire core wire 4 and the wire conductor crimped portion 2 and the gap between the wire core wires 4.

導電性ペーストは銅ペースト等の導電性の優れたものが
用いられる。As the conductive paste, one having excellent conductivity such as copper paste is used.

導電性ペーストの塗布方法は、第２図（イ）に示すよう
に導電性ペースト７を容器８内に入れ、第２図（ロ）に
示すように電線芯線４を導電性ペースト７内に浸漬する
。The method for applying the conductive paste is to place the conductive paste 7 into a container 8 as shown in FIG. 2 (a), and immerse the wire core wire 4 in the conductive paste 7 as shown in FIG. do.

そして、導電性ペースト７よりとり出した電線芯線４を
端子Ｂの電線導体圧着部２内に挿入する（第２図（ハ）
及び（ニ）参照）。Then, the wire core wire 4 taken out from the conductive paste 7 is inserted into the wire conductor crimping part 2 of the terminal B (see Fig. 2(c)).
and (d)).

電線芯線４はほとんど隙間なく導電性ペースト７が塗布
されるため、電線圧着部２を加締めした際に、電線導体
圧着部２及び電線芯線４との隙間及び電線芯線４相互間
に充分導電性ペースト７がいきわたる。Since the conductive paste 7 is applied to the wire core wire 4 with almost no gaps, when the wire crimping portion 2 is crimped, there is sufficient conductivity between the wire conductor crimping portion 2 and the wire core wire 4 and between the wire core wires 4. Paste 7 spreads.

電線芯線４を浸漬するかわりに、電線導体圧着部２を導
電性さ−スト７に浸漬して充分に塗布し、これに電線芯
線４を挿入して電線導体圧着部２を加締めしても導電性
ペースト７は隙間なく充填される。Instead of dipping the wire core wire 4, the wire conductor crimp portion 2 may be dipped in the conductive strip 7 to sufficiently coat it, the wire core wire 4 is inserted therein, and the wire conductor crimp portion 2 is crimped. The conductive paste 7 is filled without any gaps.

また、導電性オイルもたとえば接点グリースＰＳ（日本
砿油■製）のような比較的粘度が高く、導電性の優れた
ものが用いられる。導電性ペーストの代りに導電性オイ
ルを使用する場合は、電線導体圧着部２を加締める直前
にスポイトのような容器で電線芯線４に数滴滴下すれば
よく、塗布操作は簡単である。Further, as the conductive oil, one having relatively high viscosity and excellent conductivity, such as contact grease PS (manufactured by Nippon Toyu ■), is used. When using conductive oil instead of conductive paste, the application operation is simple, as it is only necessary to apply a few drops onto the wire core wire 4 using a dropper-like container just before crimping the wire conductor crimping portion 2.

なお、導電性ペーストとオイルを混合して使用する場合
には何れかに順、じて塗布すればよい。In addition, when using a mixture of the conductive paste and oil, it is sufficient to apply either one in that order.

圧着端子の形状は、電線導体圧着部２を有するものであ
れば、第１図に示す孔付丸形端子Ａであっても、第２図
に示す雌型端子Ｂであってもよく、形状に制限されるも
のではない。The shape of the crimp terminal may be the round terminal A with a hole shown in FIG. 1 or the female terminal B shown in FIG. 2 as long as it has the wire conductor crimping part 2. It is not limited to.

導電性ペースト（または導電性オイル）７が充填された
電線導体接続部は電線導体圧着部２と電線芯線４との接
触面積が増加し、電気抵抗が減少するのみならず、導電
性ペースト７によって密閉されるため酸化皮膜の生成が
抑制され、従来の電線導体接触部に生じていたような電
気抵抗の経時的漸増が防止される。The wire conductor connection portion filled with conductive paste (or conductive oil) 7 not only increases the contact area between the wire conductor crimped portion 2 and the wire core wire 4 and reduces electrical resistance, but also Since it is sealed, the formation of an oxide film is suppressed, and the gradual increase in electrical resistance over time that occurs in conventional wire conductor contact parts is prevented.

第３図は電線接続部の高温雰囲気における電気抵抗の経
時変化を示すもので、縦軸に抵抗、横軸に時間をとった
場合、従来の電線導体接続部の電気抵抗Ｃは経時的に漸
増するのに対して、本発明の電線接続部の電気抵抗りは
低い値を示し且つ経時的変化がみられない。Figure 3 shows the change over time in the electrical resistance of a wire connection in a high-temperature atmosphere.If the vertical axis is resistance and the horizontal axis is time, the electrical resistance C of a conventional wire conductor connection gradually increases over time. In contrast, the electrical resistance of the wire connection portion of the present invention exhibits a low value and does not change over time.

〔効　果〕〔effect〕

本発明は次の効果を有する。 The present invention has the following effects.

（ａ）　　圧着部内の空隙は導電性ペーストおよび（ま
たは）導電性オイルによって充填され接触面が大気と隔
絶されるために酸化皮膜の生成が抑制され、従来避ける
ことのできなかった電気抵抗の経時的漸増問題を防止す
ることができる。(a) The void in the crimped part is filled with conductive paste and/or conductive oil, and the contact surface is isolated from the atmosphere, which suppresses the formation of an oxide film and reduces electrical resistance over time, which was previously unavoidable. The problem of gradual increase can be prevented.

従って、電線導体圧着部に発熱、焼損の事故が発生する
ことはなく、又、接続機器側が誤動作する虞れも生じな
い極めて信頼性の高い電線圧着部を得ることができる。Therefore, it is possible to obtain an extremely reliable wire crimping part that does not generate heat or burn out in the wire conductor crimping part, and does not cause any risk of malfunction on the connected equipment side.

しかも、半田付けのように硬化することなく、割れや脱
落を生ずる虞れもないので、振動条件が加わる悪い環境
下に使用することができる。Moreover, unlike soldering, it does not harden and there is no risk of cracking or falling off, so it can be used in harsh environments where vibration conditions are present.

山）　電線導体圧着部と電線芯線との間は適当な接触圧
を保持する必要があり、従来の圧着作業には電線圧着部
にきびしい寸法公差を設けていたため、設定値管理上可
成りの工数を要する作業であったが、本発明によればき
びしい公差を設ける必要がなくなったため圧着作業が容
易になり、工数が短縮される。It is necessary to maintain an appropriate contact pressure between the wire conductor crimping part and the wire core wire, and conventional crimping work requires strict dimensional tolerances for the wire crimping part, which requires a considerable amount of man-hours in terms of setting value management. However, according to the present invention, there is no need to provide strict tolerances, making the crimping work easier and reducing the number of man-hours.

【図面の簡単な説明】[Brief explanation of drawings]

第１図〜第３図は本発明の実施例及び性能曲線を示し、 第１図は電線を圧着した端子の斜視図、第２図は導電性
ペースト塗布要領説明図、第３図は圧着部の電気抵抗と
時間との関係を示す性能曲線図、 第４図は従来例における電線を圧着した端子の斜視図、 第５図は第４図のＸ−Ｘ断面図である。 １・・・接触部、２・・・電線導体圧着部、４・・・電
線芯線、６・・・空隙、７・・・導電性ペースト。 第１図 第４図 ば）　　　　　　　　　　　　　（ロ）第２図 →Ｔ・ 第５図Figures 1 to 3 show examples and performance curves of the present invention, Figure 1 is a perspective view of a terminal with wires crimped, Figure 2 is an explanatory diagram of the conductive paste application procedure, and Figure 3 is a crimped part. FIG. 4 is a perspective view of a conventional terminal with wires crimped thereto, and FIG. 5 is a sectional view taken along line XX in FIG. 4. DESCRIPTION OF SYMBOLS 1... Contact part, 2... Wire conductor crimping part, 4... Wire core wire, 6... Gap, 7... Conductive paste. Figure 1 Figure 4 B) (B) Figure 2 → T・ Figure 5

Claims (1)

【特許請求の範囲】[Claims] 　圧着端子の電線導体圧着部の内部又は電線導体のいず
れかに導電性ペーストおよび（または）導電性オイルを
塗布した後に、上記電線導体圧着部に上記電線導体を挿
入して上記電線導体圧着部を加締することにより、上記
電線導体圧着部と電線導体部との間に生ずる空隙内を導
電性ペーストおよび（または）導電性オイルにて充満す
る構造としたことを特徴とする圧着端子の電線接続構造
。After applying conductive paste and/or conductive oil to either the inside of the wire conductor crimping portion of the crimp terminal or the wire conductor, inserting the wire conductor into the wire conductor crimping portion to close the wire conductor crimping portion. An electric wire connection of a crimp terminal, characterized in that the gap created between the electric wire conductor crimped part and the electric wire conductor part is filled with conductive paste and/or conductive oil by crimping. structure.