JP2007257905A

JP2007257905A - Terminal and connector using it

Info

Publication number: JP2007257905A
Application number: JP2006078069A
Authority: JP
Inventors: Tomishige Tai; 富茂田井
Original assignee: Japan Aviation Electronics Industry Ltd
Current assignee: Japan Aviation Electronics Industry Ltd
Priority date: 2006-03-22
Filing date: 2006-03-22
Publication date: 2007-10-04

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection structure to connect a cable core wire by caulking in which the deterioration of conduction caused by the relaxation of stress other than residual stress by caulking itself is prevented. <P>SOLUTION: A plurality of projections 2 are dispersevely formed at the contact face of the cable core wire of a caulking part 3 of a contact 1, or a viscoelastic material 7 is arranged. When the projections 2 are dispersevely formed when caulking is applied, they bite into the core wire thin wires 5 in a bending state and with bending released, stress is caused in an axial direction and the deterioration of conduction caused by the spring-back of the caulking part 3 is supplemented. When a viscoelastic material 7 is arranged, even if a gap is likely formed by the spring-back of the caulking part 3, the cable core wire 6 is pressed to the inner wall of the caulking part 3 by elastic stress, and conduction is maintained. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、電線芯線を加締めによって接続する端子及びそれを用いたコネクタに関し、端子としてコンタクトや接続端子等を用いる技術分野に属する。 The present invention relates to a terminal for connecting a wire core wire by caulking and a connector using the terminal, and belongs to a technical field using a contact, a connection terminal, or the like as a terminal.

従来、コンタクトや接続端子への電線芯線の接続は圧接によって行われている例が多い。
例えば、図３の（ａ）のように電線芯線６を両側から加締め部３でイ、ロ、ハのように巻き込むようにして締め付け、加締め部３の加締め変形とそれに対する電線芯線の残留応力により圧接状態を保っている（例えば、特許文献１参照）。 Conventionally, there are many examples in which the connection of the wire core wire to the contact or the connection terminal is performed by pressure welding.
For example, as shown in FIG. 3 (a), the wire core wire 6 is tightened from both sides by the caulking portion 3 so as to be wound like a, b, c, and the caulking deformation of the caulking portion 3 and the wire core wire corresponding thereto are The pressure contact state is maintained by the residual stress (see, for example, Patent Document 1).

また、別の例として図３の（ｂ）のイのように接続しようとする電線の軸方向から見てＹ字形をし、側面から見た場合ロのように垂直部１６と傾斜部１７を有する逆Ｙ字形をし内側縁が刃になっている圧接刃１５を有し、Ｙ字形の部分に被覆電線１２を置き上から押し込み治具１１で押し込むことにより、圧接刃１５で絶縁被覆１３を切り込み、傾斜部１７で押し拡げて電線芯線６を露出させ、圧接刃１５との接触および接触突起１４との接触により電気的に接続するとともに、この接続状態の保持は、圧接刃１５が電線芯線６によって押し拡げられたときの反作応力によって維持されるというものがある（例えば、特許文献２参照）。 Further, as another example, a Y-shape when viewed from the axial direction of an electric wire to be connected as shown in FIG. It has a press-contact blade 15 having an inverted Y-shape and an inner edge serving as a blade, and the insulation wire 13 is applied by the press-contact blade 15 by placing the covered electric wire 12 on the Y-shaped portion and pressing it with the pressing jig 11. The wire core 6 is exposed by cutting and expanding at the inclined portion 17 and is electrically connected by contact with the press contact blade 15 and contact with the contact protrusion 14. The connection state is maintained by the press contact blade 15. There is one that is maintained by the counteracting stress when expanded by 6 (see, for example, Patent Document 2).

以上の他、図３の（ｃ）に示すように被覆電線加締め部１８や芯線加締め部１９に横方向に溝２１を設けたものもある（例えば、特許文献３参照）。
特開２００２−１００４５２号公報（図２）特開平０８−１１５７５６号公報（図１）実用新案登録第３１１２１４３号公報（図１０） In addition to the above, as shown in FIG. 3 (c), there is a case in which a groove 21 is provided in the lateral direction in the covered wire crimping portion 18 or the core wire crimping portion 19 (see, for example, Patent Document 3).
JP 2002-100452 A (FIG. 2) Japanese Patent Laid-Open No. 08-115756 (FIG. 1) Utility Model Registration No. 3112143 (FIG. 10)

以上のような、加締め部による圧着は加締めることによって芯線内に生ずる残留応力を接圧（接点荷重）として接点を形成し、流れる電流で接触点がフリッティング（溶解）することで成立しているが、近年の高速・省電力化に伴う低電圧・微少電流の場合フリッティングが発生せず、残留応力の接圧のみで接触が保たれており、経時的な応力弛緩、特に、加締めにより巻き込んだ部分（シェル部と呼んでいる）のスプリングバックにより接圧が低下して、接触抵抗が上昇し導通不良などの不具合を生ずるという問題がある。 Crimping by the caulking part as described above is established by forming a contact point using the residual stress generated in the core wire as a contact pressure (contact load), and fritting (dissolving) the contact point with the flowing current. However, in the case of low voltage and very small current due to recent high speed and power saving, fritting does not occur and the contact is maintained only by the contact pressure of the residual stress. There is a problem that the contact pressure is lowered by the spring back of the portion (called the shell portion) that is wound by tightening, the contact resistance is increased, and problems such as poor conduction occur.

また、図３の（ｂ）のような圧接刃による接続構造のものは、圧接刃の、押し拡げた場合に元に戻ろうとする弾性力を接圧付与に貢献させているものであるが、上下方向に移動する可能性があり、弾性利用の効果も限られるという問題がある。また、図３の（ｃ）のように加締め部に溝を設けても電線の抜け防止には効果があるが接圧付与の効果はあまりない。 In addition, the connection structure using the press contact blade as shown in FIG. 3B contributes to the application of the contact pressure by the elastic force of the press contact blade that is intended to return to the original when it is expanded. There is a possibility of moving in the vertical direction, and there is a problem that the effect of utilizing elasticity is limited. Further, even if a groove is provided in the crimped portion as shown in FIG. 3C, there is an effect in preventing the wire from coming out, but there is not much effect in applying the contact pressure.

本発明は、上記従来技術の問題点に鑑みて、コンタクトや接続端子において、加締め部と芯線との接触性が低下しないようにすることを課題とするものである。 In view of the above-described problems of the prior art, an object of the present invention is to prevent contact between a crimped portion and a core wire from being deteriorated in a contact or a connection terminal.

本発明は上記の課題を解決するために以下の各手段構成を有する。
本発明の第１の構成は、電線の芯線を加締めによって接続する加締め部分の芯線接触面に複数の突起が分散配置されていることを特徴とする端子である。 In order to solve the above-described problems, the present invention has the following means configurations.
A first configuration of the present invention is a terminal characterized in that a plurality of protrusions are dispersedly arranged on a core wire contact surface of a caulking portion that connects the core wires of an electric wire by caulking.

本発明の第２の構成は、電線芯線を加締めによって接続する加締め部分の芯線接触面の１ないし複数箇所に粘弾性材を付着させたことを特徴とする端子である。 The second configuration of the present invention is a terminal characterized in that a viscoelastic material is attached to one or a plurality of locations on the core wire contact surface of the crimped portion where the wire core wire is connected by crimping.

本発明の第３の構成は、前記第１の構成又は第２の構成の端子をハウジングに収容保持したことを特徴とするコネクタである。 A third configuration of the present invention is a connector characterized in that the terminal of the first configuration or the second configuration is accommodated and held in a housing.

本発明の第１の構成では、端子の加締め部分の芯線接触面に複数の突起が分散配置されており、芯線を巻き込んで加締めると、良好な導通状態を維持できるという利点がある。 In the first configuration of the present invention, a plurality of protrusions are dispersedly arranged on the core wire contact surface of the crimped portion of the terminal, and there is an advantage that a good conduction state can be maintained when the core wire is wound and crimped.

第２の構成では、端子の加締め部分の芯線接触面の１ないし複数箇所に粘弾性材を付着させているので、芯線を加締めた場合、良好な導通状態が維持できるという利点がある。 In the second configuration, since the viscoelastic material is attached to one or a plurality of locations on the core wire contact surface of the crimped portion of the terminal, there is an advantage that a good conduction state can be maintained when the core wire is crimped.

第３の構成は、第１又は第２の構成の端子を用いたコネクタであるから、各構成で述べた利点が得られる。 Since the third configuration is a connector using the terminals of the first or second configuration, the advantages described in each configuration can be obtained.

本発明の第１の構成においては、突起の大きさおよび分散の程度は芯線束を構成する細線の半径の２分の１よりは小さく、且つ１本の細線に対して数箇所で当る位の分散が最良である。
こうすることにより、加締め部の内側面に接している細線に軸方向の応力が生じ易いからである。 In the first configuration of the present invention, the size of the protrusion and the degree of dispersion are smaller than one half of the radius of the thin wires constituting the core wire bundle, and the projections are in several places against one thin wire. Dispersion is best.
By doing so, stress in the axial direction is likely to be generated in the thin line in contact with the inner surface of the crimped portion.

第２の構成においては、芯線を加締めた後、断面で見た場合、スプリングバックによって、隙間が生じそうな方向へ芯線を押しやるような弾性応力を生ずる位置に軸方向で数箇所粘弾性材を配するのがよい。
粘弾性材自体に非導電性のものを用いた場合には、導通面積があまり少なくならないよう断面で見た場合、芯線の周囲で４分の１以下にするのがよい。 In the second configuration, after crimping the core wire, when viewed in a cross section, the springback causes several elastic viscoelastic materials in the axial direction to generate elastic stress that pushes the core wire in a direction in which a gap is likely to occur. It is good to arrange.
When a non-conductive material is used as the viscoelastic material itself, it is preferable that the viscoelastic material itself be less than or equal to one-fourth around the core wire when viewed in cross section so that the conduction area does not decrease so much.

以下、端子としてコンタクトを用いた場合の本発明の実施例を、図面を参照して説明する。
図１は、本発明の第１の構成の実施例を示す図である。（ａ）はコンタクトの斜視図である。
コンタクト１の左部分は、コンタクト部４で図示されていない相手方ピンコンタクトと接触する。右部分が電線芯線を加締め接続する加締め部３である。加締め部３の内側で芯線に接する部分には多数の突起２が設けられている。
この突起を設ける方法としては、例えば複合メッキがある。複合メッキとはメッキ液に例えばジルコニアのような異分子を入れると、被メッキ体にその異分子が付着したうえからメッキがかかるので、表面がブツブツになるというものである。
また、溶融金属を吹き付けることによっても生成することができる。 Hereinafter, embodiments of the present invention using contacts as terminals will be described with reference to the drawings.
FIG. 1 is a diagram showing an embodiment of the first configuration of the present invention. (A) is a perspective view of a contact.
The left part of the contact 1 comes into contact with a counterpart pin contact not shown in the contact part 4. The right part is a caulking portion 3 for caulking and connecting the wire core wire. A large number of protrusions 2 are provided on the inside of the caulking portion 3 and in contact with the core wire.
As a method of providing this protrusion, there is, for example, composite plating. In composite plating, when different molecules such as zirconia are put in the plating solution, plating is applied after the different molecules adhere to the object to be plated.
It can also be produced by spraying molten metal.

（ｂ）は電線芯線６を加締めた状態の断面図である。
このような加締め部３に細線が束になっている電線芯線６を置き、突起分布面に接する芯線細線５について見れば、加締める前は芯線細線は図１の（ｃ）のように波打っているが、加締めると（ｄ）のように突起が芯線細線５に食い込むとともに加締め圧によって真直ぐになる。
即ち、突起２、２の間に若干長いものを押し込んだような形になり、突起２と芯線細線５との間に軸方向の応力を生じる。もし突起２がなければ、軸方向に直交する方向の応力しか生じないが、突起２を設けることにより突起２が芯線にめり込み、かつ芯線のたわみ分が突起間に押し込まれるため、芯線の軸方向の応力が生じるので、加締め部３がスプリングバックによって、開く方向に緩み半径方向の残留応力が減じても、すなわち、加締めによる応力以外の軸方向の応力がこれを補って、全体としては接触性が低下せず、良好な導通状態が得られる。 (B) is sectional drawing of the state which crimped the electric wire core wire 6. FIG.
If the wire core wire 6 in which the thin wires are bundled is placed on the crimping portion 3 and the core wire 5 in contact with the projection distribution surface is viewed, the core wire before the caulking is corrugated as shown in FIG. Although it is struck, as shown in (d), the protrusion bites into the core wire 5 and is straightened by the crimping pressure.
That is, a slightly long object is pushed between the protrusions 2 and 2, and an axial stress is generated between the protrusion 2 and the core wire 5. If there is no protrusion 2, only a stress in a direction perpendicular to the axial direction is generated. However, by providing the protrusion 2, the protrusion 2 is indented into the core wire, and the deflection of the core wire is pushed between the protrusions. Therefore, even if the caulking portion 3 is loosened in the opening direction by the spring back and the residual stress in the radial direction is reduced, that is, the axial stress other than the stress due to caulking compensates for this. Contactability does not decrease and a good conduction state is obtained.

図２は、本発明の第２の構成の実施例を示す図である。
（ａ）は斜視図であり、（ｂ）は加締めた状態の断面図である。（ａ）に示すように加締め部３の電線芯線接触面に粘弾性材７が設けられている。図では１箇所であるが２箇所でも３箇所でもよい。ただし粘弾性材は通常非導電性物質であるのであまり多く設けると加締め部３と電線芯線６の導通接触面が少なくなってしまうので、この点配慮する必要がある。
又、公知の導電性粒子（カーボン、金属粉末等）を含有させて導電性部材とした粘弾性材を用いた場合には、非導電性の粘弾性材に比べ芯線とコンタクトとの接触が更に安定する。 FIG. 2 is a diagram showing an embodiment of the second configuration of the present invention.
(A) is a perspective view, (b) is a sectional view in a crimped state. As shown to (a), the viscoelastic material 7 is provided in the electric wire core wire contact surface of the crimping part 3. As shown in FIG. Although it is one place in the figure, it may be two places or three places. However, since the viscoelastic material is usually a non-conductive material, the conductive contact surface between the caulking portion 3 and the electric wire core 6 is reduced if it is provided in a large amount.
In addition, when a viscoelastic material containing conductive particles (carbon, metal powder, etc.) as a conductive member is used, the contact between the core wire and the contact is further improved as compared with the nonconductive viscoelastic material. Stabilize.

粘弾性材とは、弾性変形と粘性流動が重なって現れる材料であり、ゴム等のような高分子物質、ゲル、コロイド分散系、金属などの多結晶質がある。
このような物質を設けて電線芯線６を加締めると図２の（ｂ）に示すように、弾性によって、加締め部３と電線芯線６との間の空隙を埋めるようにして変形するとともに体積も圧縮されるが、元の形、体積に戻ろうとする弾性応力が生ずる。 The viscoelastic material is a material in which elastic deformation and viscous flow appear, and includes a polymer material such as rubber, a gel, a colloidal dispersion system, and a polycrystalline material such as metal.
When such a substance is provided and the electric wire core 6 is crimped, as shown in FIG. 2 (b), it deforms so as to fill the gap between the caulking portion 3 and the electric wire core 6 by elasticity, and the volume. Is also compressed, but elastic stress is generated to return to its original shape and volume.

従って、加締め部３のスプリングバックによって、芯線と加締め部が直接接触している部分の加締めが緩み、例えば右側の方で電線芯線６と加締め部３の内壁との間に隙間が生じようとしても加締めによる応力以外の粘弾性材の弾性応力によって電線芯線６を加締め部３の内面に押し付けるようになるので、結果的に隙間が生ぜず両者間の導電性が維持されるということになる。 Accordingly, the springback of the crimping portion 3 loosens the portion where the core wire and the crimping portion are in direct contact, and for example, a gap is formed between the wire core wire 6 and the inner wall of the crimping portion 3 on the right side. Even if it occurs, the wire core wire 6 is pressed against the inner surface of the caulking portion 3 by the elastic stress of the viscoelastic material other than the stress due to caulking. As a result, there is no gap and the conductivity between the two is maintained. It turns out that.

第３の構成は、図１又は図２のコンタクトを用いたコネクタということで、前記発明の効果の得られるコネクタということになる。 The third configuration is a connector using the contact shown in FIG. 1 or FIG.

本発明第１の構成の実施例の構造図である。1 is a structural diagram of an embodiment of a first configuration of the present invention. 本発明第２の構成の実施例の構造図である。It is a structural diagram of the Example of the 2nd structure of this invention. 従来の圧接による電線芯線の接続構造を示す図である。It is a figure which shows the connection structure of the electric wire core wire by the conventional press-contact.

符号の説明Explanation of symbols

１コンタクト
２突起
３加締め部
４コンタクト部
５芯線細線
６電線芯線
７粘弾性材
１１押し込み治具
１２被覆電線
１３絶縁被覆
１４接触突起
１５圧接刃
１６垂直部
１７傾斜部
１８被覆電線加締め部
１９芯線加締め部
２０接続端
２１溝 DESCRIPTION OF SYMBOLS 1 Contact 2 Protrusion 3 Clamping part 4 Contact part 5 Core wire thin wire 6 Electric wire core wire 7 Viscoelastic material 11 Pushing jig 12 Covered electric wire 13 Insulation coating 14 Contact protrusion 15 Pressure contact blade 16 Vertical part 17 Inclination part 18 Covered electric wire crimping part 19 Core wire crimping part 20 Connection end 21 Groove

Claims

電線の芯線を加締めによって接続する加締め部分の芯線接触面に複数の突起が分散配置されていることを特徴とする端子。 A terminal characterized in that a plurality of protrusions are dispersedly arranged on a core wire contact surface of a caulking portion that connects the core wires of an electric wire by caulking.

電線芯線を加締めによって接続する加締め部分の芯線接触面の１ないし複数箇所に粘弾性材を付着させたことを特徴とする端子。 A terminal characterized in that a viscoelastic material is attached to one or a plurality of locations of a core wire contact surface of a caulking portion to which an electric wire core wire is connected by caulking.

請求項１又は請求項２の端子をハウジングに収容保持したことを特徴とするコネクタ。

A connector characterized in that the terminal of claim 1 or 2 is housed and held in a housing.