JP5227877B2 - Crimp terminal - Google Patents

Crimp terminal Download PDF

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JP5227877B2
JP5227877B2 JP2009093251A JP2009093251A JP5227877B2 JP 5227877 B2 JP5227877 B2 JP 5227877B2 JP 2009093251 A JP2009093251 A JP 2009093251A JP 2009093251 A JP2009093251 A JP 2009093251A JP 5227877 B2 JP5227877 B2 JP 5227877B2
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conductor
crimp terminal
conductor crimping
crimping
electric wire
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JP2010244889A (en
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康路 桑山
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Yazaki Corp
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Description

本発明は、例えば、自動車の電装系に使用される断面Ｕ字状の導体圧着部を有したオープンバレルタイプの圧着端子に関する。   The present invention relates to an open barrel type crimp terminal having a conductor crimping portion having a U-shaped cross section used in, for example, an automobile electrical system.

図１３は、例えば、特許文献１に記載されたものと類似の従来の圧着端子の構成を示す斜視図である。   FIG. 13 is a perspective view showing a configuration of a conventional crimp terminal similar to that described in Patent Document 1, for example.

この圧着端子２１０は、端子の長手方向（接続する電線の導体の長手方向でもある）の前部に、相手コネクタ側の端子に接続される電気接続部２１１を備え、その後部に、電線（図示略）の端末の露出した導体に加締められる導体圧着部２１２を備え、さらにその後部に、電線の絶縁被覆の付いた部分に加締められる被覆加締部２１３を備えている。また、電気接続部２１１と導体圧着部２１２の間に、それらの間を繋ぐ第１の繋ぎ部２１４を備え、導体圧着部２１２と被覆加締部２１３の間に、それらの間を繋ぐ第２の繋ぎ部２１５を備えている。   The crimp terminal 210 includes an electrical connection portion 211 connected to a terminal on the mating connector side at the front portion in the longitudinal direction of the terminal (which is also the longitudinal direction of the conductor of the electric wire to be connected). A conductor crimping section 212 that is crimped to the exposed conductor of the terminal (not shown), and a coating crimping section 213 that is crimped to a portion of the electric wire with an insulation coating. In addition, a first connecting portion 214 is provided between the electrical connecting portion 211 and the conductor crimping portion 212, and a second connecting portion is provided between the conductor crimping portion 212 and the covering crimping portion 213. The connection part 215 is provided.

導体圧着部２１２は、底板２３１と、該底板２３１の左右両側縁から上方に延設されて該底板２３１の内面上に配された電線の導体を包むように加締められる一対の導体加締片２３２，２３２と、で断面略Ｕ字状に形成されている。また、被覆加締部２１３は、底板２６１と、該底板２６１の左右両側縁から上方に延設されて該底板２６１の内面上に配された電線（絶縁被覆の付いた部分）を包むように加締められる一対の被覆加締片２６２，２６２と、で断面略Ｕ字状に形成されている。   The conductor crimping portion 212 includes a bottom plate 231 and a pair of conductor crimping pieces 232 that extend upward from the left and right side edges of the bottom plate 231 and are crimped so as to wrap the conductor of the electric wire disposed on the inner surface of the bottom plate 231. , 232, and a substantially U-shaped cross section. Further, the cover crimping portion 213 is formed so as to wrap the bottom plate 261 and an electric wire (a portion with an insulation coating) that extends upward from the left and right side edges of the bottom plate 261 and is disposed on the inner surface of the bottom plate 261. A pair of covering crimping pieces 262 and 262 to be tightened form a substantially U-shaped cross section.

また、導体圧着部２１２の前後の第１の繋ぎ部２１４および第２の繋ぎ部２１５は、共に、底板２２１、２５１と、該底板２２１、２５１の左右両側縁から上方に起立した低背の側板２２２、２５２と、で断面Ｕ字状に形成されている。   The first connecting portion 214 and the second connecting portion 215 before and after the conductor crimping portion 212 are both a bottom plate 221, 251 and a low-profile side plate that stands up from the left and right edges of the bottom plate 221, 251. 222, 252 and a U-shaped cross section.

そして、前部の電気接続部２１１の底板（図示略）から最後部の被覆加締部２１３までの範囲の底板２２１、２３１、２５１、２６１が、１枚の帯板状に連続して形成されている。また、第１の繋ぎ部２１４の低背の側板２２２の前後端は、電線接続部２１１の側板（符号省略）の後端および導体圧着部２１２の導体加締片２３２の前端の各下半部にそれぞれ連続し、第２の繋ぎ部２１５の低背の側板２５２の前後端は、導体圧着部２１２の導体加締片２３２の後端および被覆加締部２１３の被覆加締片２６２の前端の各下半部にそれぞれ連続している。   The bottom plates 221, 231, 251, and 261 in the range from the bottom plate (not shown) of the front electrical connection portion 211 to the last cover crimping portion 213 are continuously formed in a single strip shape. ing. Further, the front and rear ends of the low-profile side plate 222 of the first connecting portion 214 are the lower half portions of the rear end of the side plate (reference number omitted) of the wire connection portion 211 and the front end of the conductor crimping piece 232 of the conductor crimping portion 212. The front and rear ends of the low-profile side plate 252 of the second connecting portion 215 are the rear end of the conductor crimping piece 232 of the conductor crimping portion 212 and the front end of the covering crimping piece 262 of the covering crimping portion 213, respectively. Each lower half is continuous.

また、導体圧着部２１２の内面には、電線の導体の長手方向（端子長手方向）と直交する方向に延びる複数本の凹溝状のセレーション２３５が設けられている。   In addition, a plurality of concave serrations 235 extending in a direction orthogonal to the longitudinal direction of the conductor of the electric wire (terminal longitudinal direction) are provided on the inner surface of the conductor crimping portion 212.

この圧着端子２１０の導体圧着部２１２を電線の端末の導体に圧着するには、図示しない下型（アンビル）の載置面（上面）上に圧着端子２１０を載せると共に、電線の端末の導体を導体圧着部２１２の導体加締片２３２間に挿入し、底板２３１の上面に載せる。そして、上型（クリンパー）を下型に対して相対的に下降させることにより、上型の案内斜面で導体加締片２３２の先端側を徐々に内側に倒して行く。この際、左右の導体加締片２３２は、底板２３１の左右両端部２３１ａ付近を基準にして曲げ変形して行く。   In order to crimp the conductor crimping portion 212 of the crimp terminal 210 to the conductor at the end of the electric wire, the crimp terminal 210 is placed on a mounting surface (upper surface) of a lower mold (anvil) (not shown), and the conductor at the end of the electric wire is attached. It is inserted between the conductor crimping pieces 232 of the conductor crimping part 212 and placed on the upper surface of the bottom plate 231. Then, by lowering the upper die (crimper) relative to the lower die, the leading end side of the conductor crimping piece 232 is gradually tilted inward on the guide slope of the upper die. At this time, the left and right conductor crimping pieces 232 are bent and deformed with reference to the vicinity of the left and right end portions 231a of the bottom plate 231.

そして、さらに上型（クリンパー）を下型に対して相対的に下降させることにより、最終的に、上型の案内斜面から中央の山形部に連なる湾曲面で、導体加締片２３２の先端を導体側に折り返すように丸めて、図１４（ａ）に示すように、導体加締片２３２の先端同士を擦り合わせながら導体Ｗａに食い込ませることにより、導体Ｗａを包むように導体加締片２３２を加締める。   Then, by further lowering the upper die (crimper) relative to the lower die, finally, the tip of the conductor crimping piece 232 is placed on the curved surface that continues from the guide slope of the upper die to the central chevron. As shown in FIG. 14A, the conductor crimping piece 232 is wrapped so as to wrap around the conductor Wa by being rounded back to the conductor side and biting into the conductor Wa while rubbing the tips of the conductor crimping pieces 232 together. Clamp.

以上の操作により、圧着端子２１０の導体圧着部２１２を電線の導体Ｗａに圧着によって接続することができる。なお、被覆加締部２１３についても、同様に、下型と上型を用いて被覆加締片２６２を内側に徐々に曲げて行き、被覆加締片２６２を電線の絶縁被覆の付いた部分に加締める。こうすることにより、圧着端子２１０を電線に電気的および機械的に接続することができる。   By the above operation, the conductor crimping portion 212 of the crimp terminal 210 can be connected to the conductor Wa of the electric wire by crimping. Similarly, with respect to the covering crimping portion 213, the covering crimping piece 262 is gradually bent inward using the lower mold and the upper mold, and the covering crimping piece 262 is attached to the portion of the electric wire with the insulation coating. Clamp. By doing so, the crimp terminal 210 can be electrically and mechanically connected to the electric wire.

ところで、このように圧着端子２１０を電線に接続した場合、その圧着部分の信頼性を評価しておく必要があり、そのためにサーマルショック試験（冷熱衝撃試験）が行われることがある。   By the way, when the crimp terminal 210 is connected to the electric wire in this way, it is necessary to evaluate the reliability of the crimped portion, and therefore a thermal shock test (cooling shock test) may be performed.

サーマルショック試験とは、現実の使用条件を全てカバーし得るような厳しい条件で耐久性能を検査するものであり、例えば、自動車用の端子の圧着部については、低温条件と高温条件とを短時間で繰り返し課す。   The thermal shock test inspects durability performance under severe conditions that can cover all actual usage conditions. For example, for crimped parts of automobile terminals, the low temperature condition and the high temperature condition are set for a short time. Repeatedly.

このようなサーマルショック試験を行った場合、圧着端子２１０の導体圧着部２１２および電線の導体Ｗａが伸び縮み（膨張収縮）する。例えば、図１４（ａ）中の実線で示す形状が常温時の状態であるとすると、高温時には点線のような形状に膨張する。   When such a thermal shock test is performed, the conductor crimping portion 212 of the crimp terminal 210 and the conductor Wa of the electric wire expand and contract (expand and contract). For example, if the shape indicated by the solid line in FIG. 14A is in a state at normal temperature, the shape expands to a shape like a dotted line at high temperature.

導体圧着部２１２の剛性が充分に高い場合には、温度変化に応じて導体圧着部２１２や導体Ｗａが伸び縮みしたとしても、常温時に原形状に復元するのであるが、小型化や薄型化が図られた端子の場合は、端子の剛性が低くなりがちであるため、サーマルショック試験を経た後に原形状への戻りが悪くなり、図１４（ｂ）に示すように元の形状に戻り切らないことがある。つまり、左右の導体加締片２３２の先端の擦り合わせ部分が、開き気味になったまま戻らなくなってしまうことがある。   When the rigidity of the conductor crimping part 212 is sufficiently high, even if the conductor crimping part 212 or the conductor Wa expands or contracts according to the temperature change, it is restored to the original shape at room temperature. In the case of the illustrated terminal, since the rigidity of the terminal tends to be low, the return to the original shape is poor after the thermal shock test, and the original shape is not completely restored as shown in FIG. Sometimes. In other words, the rubbing portions at the ends of the left and right conductor crimping pieces 232 may not be returned while remaining open.

例えば、図１４（ａ）中の実線で示すように、圧着時において、導体圧着部２１２の導体加締片２３２の先端は導体Ｗａに食い込んた状態になっているが、その食い込み量ｅ１があまり大きくないような場合（食い込みが浅い場合）には、サーマルショック試験後に、導体加締片２３２がより原形状に戻り切らない現象が起こりやすく、その結果、図１４（ｂ）の寸法ｅ２に示すように、食い込みが一層浅くなった状態になってしまうことがある。   For example, as shown by the solid line in FIG. 14 (a), the tip of the conductor crimping piece 232 of the conductor crimping portion 212 is bitten into the conductor Wa during crimping, but the biting amount e1 is too small. In the case where it is not large (when the bite is shallow), a phenomenon that the conductor crimping piece 232 does not return to its original shape more easily occurs after the thermal shock test, and as a result, the dimension e2 shown in FIG. As described above, the bite may become shallower.

このように導体加締片２３２の原形状への戻りが悪くなり、導体加締片２３２の先端の擦り合わせ部分が開き気味になったり、導体加締片２３２の導体Ｗａへの食い込みが浅くなったりすると、圧着端子２１０による導体Ｗａへの締め付けが弱くなって、導体加締片２３２による導体Ｗａへの接圧（接触荷重）Ｆが減少することになり、接圧Ｆが減少すると、圧着端子２１０と電線の接続部の固着力（機械的接続力）や導電性（電気的接続性能）が低下することになる。   Thus, the return of the conductor crimping piece 232 to the original shape is deteriorated, the rubbing portion at the tip of the conductor crimping piece 232 becomes open, or the biting of the conductor crimping piece 232 into the conductor Wa becomes shallow. In other words, the crimping to the conductor Wa by the crimp terminal 210 becomes weak, and the contact pressure (contact load) F to the conductor Wa by the conductor crimping piece 232 decreases. Adhesive strength (mechanical connection force) and electrical conductivity (electrical connection performance) between the connecting portion of 210 and the electric wire are reduced.

一方、最近では、ワイヤーハーネスの軽量化のために、銅電線からアルミ電線への転換が検討されるようになってきており、アルミ電線に銅端子を接続する場面も多くなってきた。そのような場合は、圧着端子と電線の導体の間に熱膨張差があることにより、サーマルショック試験後に、圧着端子と導体の接圧が一層減少しやすいことが分かってきた。   On the other hand, recently, in order to reduce the weight of the wire harness, conversion from a copper electric wire to an aluminum electric wire has been studied, and there are many occasions where a copper terminal is connected to the aluminum electric wire. In such a case, it has been found that the contact pressure between the crimp terminal and the conductor is more likely to decrease after the thermal shock test due to the difference in thermal expansion between the crimp terminal and the conductor of the electric wire.

特開２００４−３０３５２６号公報（図１）Japanese Patent Laying-Open No. 2004-303526 (FIG. 1)

以上のように、小型化や薄型化が図られた圧着端子２１０の場合、導体圧着部２１２の剛性の不足により、導体への圧着部分の電気接続性や機械接続性が低下してしまうことがあった。   As described above, in the case of the crimp terminal 210 that is reduced in size and thickness, the electrical connection property and the mechanical connection property of the crimp portion to the conductor may be deteriorated due to insufficient rigidity of the conductor crimp portion 212. there were.

その点について発明者らが詳しく調べてみると、導体加締片２３２の原形状への戻りが悪くなった場合は、導体Ｗａに対する左右側方からの締め付けが弱くなり、圧着部分の両サイドの接圧が減少することが最も大きな原因の一つであることが分かってきた。また、その両サイドの接圧の減少には、特に図１４（ｂ）中のＸ円で示す導体加締片２３２の根元部分の剛性の影響が大きいことが分かってきた。   When the inventors examined in detail about this point, when the return of the conductor crimping piece 232 to the original shape deteriorates, the tightening from the left and right sides with respect to the conductor Wa becomes weak, and the both sides of the crimping part are weakened. It has been found that one of the biggest causes is a decrease in contact pressure. Further, it has been found that the reduction of the contact pressure on both sides is particularly affected by the rigidity of the root portion of the conductor crimping piece 232 indicated by the X circle in FIG.

本発明は、上記事情を考慮し、導体加締片の特に根元部分の剛性増加を図ることにより、サーマルショック試験後の圧着部形状の戻りの悪さを低減することができ、それにより導体圧着部の両サイドの接圧を効果的に高めることができ、その結果として、電気的接続性能と機械的接続性能の両方を向上させることのできる圧着端子を提供することを目的とする。   In consideration of the above circumstances, the present invention can reduce the bad return of the crimped part shape after the thermal shock test by increasing the rigidity of the conductor crimped piece, in particular, the base part, thereby reducing the conductor crimped part. It is an object of the present invention to provide a crimp terminal that can effectively increase the contact pressure on both sides of the sheet and, as a result, improve both the electrical connection performance and the mechanical connection performance.

上記課題を解決するために、請求項１の発明は、電線の導体に圧着して接続される導体圧着部を有し、該導体圧着部が、底板と、該底板の左右両側縁から上方に延設されて該底板の内面上に配された前記導体を包むように加締められる一対の導体加締片と、で断面略Ｕ字状に形成された圧着端子において、前記一対の各導体加締片の根元部分にそれぞれ、内面側が凹部となり外面側が凸部となった端子長手方向に延びる補強レールがプレス加工により形成されていることを特徴としている。   In order to solve the above-mentioned problem, the invention of claim 1 has a conductor crimping portion that is crimped and connected to a conductor of an electric wire, and the conductor crimping portion is located above the bottom plate and the left and right side edges of the bottom plate. A pair of conductor crimping pieces that are extended and are crimped so as to wrap the conductor disposed on the inner surface of the bottom plate, and a crimp terminal that is formed in a substantially U-shaped cross section. Reinforcing rails extending in the longitudinal direction of the terminal, each having a concave portion on the inner surface side and a convex portion on the outer surface side, are formed by pressing at the base portion of each piece.

請求項２の発明は、請求項１に記載の圧着端子であって、前記補強レールの凹部の断面形状が、前記導体加締片を電線の導体に加締めたときに、前記凹部の両内側面が内底面に対して垂直な角度よりも内側に倒れた角度となったアリ溝型となるように形成されていることを特徴としている。   The invention according to claim 2 is the crimp terminal according to claim 1, wherein the cross-sectional shape of the recess of the reinforcing rail is such that when the conductor crimping piece is crimped to the conductor of the electric wire, It is characterized in that the side surface is formed in a dovetail shape with an angle that falls to the inside rather than an angle perpendicular to the inner bottom surface.

請求項３の発明は、請求項１または２に記載の圧着端子であって、前記導体圧着部の内面に、端子長手方向に直交する方向に延びる凹溝状のセレーションが設けられていることを特徴としている。   The invention of claim 3 is the crimp terminal according to claim 1 or 2, wherein the inner surface of the conductor crimping portion is provided with a groove-shaped serration extending in a direction orthogonal to the terminal longitudinal direction. It is a feature.

請求項４の発明は、請求項３に記載の圧着端子であって、前記セレーションが、前記左右の補強レールの凹部を跨いで形成されていることを特徴としている。   A fourth aspect of the present invention is the crimp terminal according to the third aspect, wherein the serration is formed across the concave portions of the left and right reinforcing rails.

請求項５の発明は、請求項３に記載の圧着端子であって、前記セレーションが、前記左右の補強レールの凹部の間に収まるように形成されていることを特徴としている。   A fifth aspect of the present invention is the crimp terminal according to the third aspect, wherein the serration is formed so as to be accommodated between the concave portions of the left and right reinforcing rails.

請求項６の発明は、請求項１〜５のいずれか１項に記載の圧着端子であって、前記補強レールの凹部の深さが、前記セレーションの深さよりも深くなっていることを特徴としている。   Invention of Claim 6 is the crimp terminal of any one of Claims 1-5, Comprising: The depth of the recessed part of the said reinforcement rail is deeper than the depth of the said serration, It is characterized by the above-mentioned. Yes.

請求項７の発明は、請求項１〜６のいずれか１項に記載の圧着端子であって、前記補強レールの凹部の長手方向の両端が閉じていることを特徴としている。   A seventh aspect of the present invention is the crimp terminal according to any one of the first to sixth aspects, characterized in that both ends in the longitudinal direction of the concave portion of the reinforcing rail are closed.

請求項１の発明によれば、導体加締片の根元部分に補強レールを設けたので、導体加締片の根元部分の剛性を高めることができる。そのため、左右の導体加締片を電線の導体に加締めた状態での、サーマルショック試験による導体加締片の緩みを防止することができる。   According to the first aspect of the invention, since the reinforcing rail is provided at the base portion of the conductor crimping piece, the rigidity of the base portion of the conductor crimping piece can be increased. Therefore, loosening of the conductor crimping pieces by the thermal shock test in a state where the left and right conductor crimping pieces are crimped to the conductors of the electric wires can be prevented.

即ち、電線の導体に端子の導体加締片を加締めた部分に対してサーマルショック試験を行った場合、導体圧着部の剛性が不足気味であると、熱膨張と熱収縮の繰り返しにより、常温状態にしたときに導体加締片の先端が原形状に戻り切らずに、導体加締片の先端が開き気味になったり、導体に対する導体加締片の先端の食い込みが浅くなってしまったりすることがある。特に端子材料と導体材料が異なり両者間に熱膨張差があると、その現象が顕著に起こりやすくなる。そうなると、電線に対する端子による締め付け力が低下し、電気接続抵抗が大きくなったり、機械的結合力が弱くなったりする。   That is, when the thermal shock test is performed on the portion where the conductor crimping piece of the terminal is crimped to the conductor of the electric wire, if the rigidity of the conductor crimping portion is insufficient, The tip of the conductor crimping piece does not return to its original shape when it is in a state, the tip of the conductor crimping piece opens and the biting of the tip of the conductor crimping piece into the conductor becomes shallow Sometimes. In particular, if the terminal material and the conductor material are different and there is a difference in thermal expansion between them, the phenomenon is likely to occur remarkably. If it becomes so, the clamping force by the terminal with respect to an electric wire will fall, an electrical connection resistance will become large, or a mechanical coupling force will become weak.

その点、本発明では、補強レールの追加により導体加締片の剛性が強化されていることにより、サーマルショック試験を行った場合の緩み（つまり、導体加締片が原形状に戻り切らずに、導体加締片の先端が開き気味になったり、導体加締片の先端の導体に対する食い込みが浅くなったりする現象）を防止することができ、それにより、電気的接続性能の向上と機械的接続性能の向上を図ることができる。   In that respect, in the present invention, the rigidity of the conductor crimping piece is enhanced by the addition of the reinforcing rail, so that the looseness when the thermal shock test is performed (that is, the conductor crimping piece does not return to its original shape). , The phenomenon that the tip of the conductor crimping piece opens and the biting of the conductor crimping piece into the conductor becomes shallow, thereby improving the electrical connection performance and mechanical Connection performance can be improved.

また、補強レールの内面側が端子長手方向に延びる凹部となっているので、導体加締片を導体に加締める際に、その凹部がセレーションと同様の機能を果たすことになり、導体加締片の導体に対する締め付け力が増加し、その点からも導体加締片による導体に対する接圧の増大が図れる。   Moreover, since the inner surface side of the reinforcing rail is a recess extending in the terminal longitudinal direction, when the conductor crimping piece is crimped to the conductor, the recess serves the same function as the serration. The tightening force on the conductor increases, and from this point, the contact pressure on the conductor by the conductor crimping piece can be increased.

請求項２の発明によれば、導体加締片を導体に加締めた段階で、補強レールの内面側の凹部の断面がアリ溝型に窄まるので、より一層導体加締片の導体に対する締め付け力を高めることができる。   According to the invention of claim 2, since the cross section of the concave portion on the inner surface side of the reinforcing rail is narrowed in the dovetail shape at the stage where the conductor crimping piece is crimped to the conductor, the conductor crimping piece is further tightened on the conductor You can increase your power.

請求項３の発明によれば、導体圧着部の内面にセレーションがあることにより、端子と導体の接圧の増加を図ることができる。また、電線がアルミ電線の場合は、セレーションに対するアルミ導体の摺動により、端子と導体の凝着面積の増大が図れ、電気的接続性能と機械的接続性能の向上が図れる。   According to the invention of claim 3, since there is serration on the inner surface of the conductor crimping portion, the contact pressure between the terminal and the conductor can be increased. Further, when the electric wire is an aluminum electric wire, the adhesion area between the terminal and the conductor can be increased by sliding the aluminum conductor with respect to the serration, and the electrical connection performance and the mechanical connection performance can be improved.

請求項４の発明によれば、長いセレーションを、導体圧着部の底板から導体加締片の内面の広い範囲にわたり形成することができるので、セレーションと凹部の存在により接圧の増加を図ることができる。   According to the invention of claim 4, since long serrations can be formed over a wide range from the bottom plate of the conductor crimping portion to the inner surface of the conductor crimping piece, the contact pressure can be increased by the presence of serrations and recesses. it can.

請求項５の発明によれば、主に導体圧着部の底板の内面に限定してセレーションを形成することができる。従って、セレーションを設けることによる導体加締片の剛性の低下を避けることができる。   According to the invention of claim 5, serrations can be formed mainly on the inner surface of the bottom plate of the conductor crimping portion. Accordingly, it is possible to avoid a decrease in the rigidity of the conductor crimping piece due to the provision of serrations.

請求項６の発明によれば、セレーションを浅く形成し、補強レールの凹部をセレーションよりも深く形成したので、補強レールの凹部が深い分だけ、補強レールによる導体加締片の根元部分に対する補強効果を高めることができる。   According to the invention of claim 6, since the serration is formed shallower and the concave portion of the reinforcing rail is formed deeper than the serration, the reinforcing effect on the root portion of the conductor crimping piece by the reinforcing rail is increased by the depth of the concave portion of the reinforcing rail. Can be increased.

請求項７の発明によれば、補強レールの凹部の長手方向の両端が閉じているので、凹部の両端が導体加締片の幅方向両端に開放している場合と比べて、補強レールの補強効果を大きくすることができる。   According to the invention of claim 7, since both ends in the longitudinal direction of the recessed portion of the reinforcing rail are closed, the reinforcing rail is reinforced compared to the case where both ends of the recessed portion are open to both ends in the width direction of the conductor crimping piece. The effect can be increased.

本発明の第１実施形態の圧着端子の構成を示す斜視図である。It is a perspective view which shows the structure of the crimp terminal of 1st Embodiment of this invention. 同圧着端子の導体圧着部の展開図である。It is an expanded view of the conductor crimping part of the crimp terminal. 図２のＡ−Ａ矢視断面図である。It is AA arrow sectional drawing of FIG. 図２のＢ−Ｂ矢視断面図である。It is a BB arrow sectional view of Drawing 2. 導体圧着部を導体に圧着させた状態を示す断面図である。It is sectional drawing which shows the state which crimped | bonded the conductor crimping | compression-bonding part to the conductor. 導体圧着部を圧着する前の補強レールの内面側の凹部と導体との関係を示す断面図である。It is sectional drawing which shows the relationship between the recessed part by the side of the inner surface of the reinforcement rail before crimping | bonding a conductor crimping part, and a conductor. 導体圧着部を圧着した後の補強レールの内面側の凹部と導体との関係を示す断面図である。It is sectional drawing which shows the relationship between the recessed part and inner surface side of a reinforcement rail after crimping | bonding a conductor crimping | compression-bonding part. 本発明の第２実施形態の圧着端子の導体圧着部の展開図である。It is an expanded view of the conductor crimping | compression-bonding part of the crimp terminal of 2nd Embodiment of this invention. 図８のＡ−Ａ矢視断面図である。It is AA arrow sectional drawing of FIG. 本発明の第３実施形態の圧着端子の構成を示す斜視図である。It is a perspective view which shows the structure of the crimp terminal of 3rd Embodiment of this invention. 同圧着端子の導体圧着部の展開図である。It is an expanded view of the conductor crimping part of the crimp terminal. 図１１のＡ−Ａ矢視断面図である。It is AA arrow sectional drawing of FIG. 従来の圧着端子の構成を示す斜視図である。It is a perspective view which shows the structure of the conventional crimp terminal. 従来の圧着端子の導体圧着部を電線の導体に圧着させた部分を示す断面図で、（ａ）は圧着時の状態を示す図、（ｂ）はサーマルショック試験後に原形状に戻り切らなくなった状態を示す図である。It is sectional drawing which shows the part which crimped the conductor crimping part of the conventional crimp terminal to the conductor of an electric wire, (a) is a figure which shows the state at the time of crimping, (b) is no longer able to return to an original shape after a thermal shock test. It is a figure which shows a state.

以下、本発明の実施形態を図面を参照して説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本発明の第１実施形態の圧着端子の構成を示す斜視図、図２は同圧着端子の導体圧着部の展開図、図３は図２のＡ−Ａ矢視断面図、図４は図２のＢ−Ｂ矢視断面図、図５は導体圧着部を導体に圧着させた状態を示す断面図、図６は導体圧着部を圧着する前の補強レールの内面側の凹部と導体との関係を示す断面図、図７は導体圧着部を圧着した後の補強レールの内面側の凹部と導体との関係を示す断面図である。   1 is a perspective view showing a configuration of a crimp terminal according to a first embodiment of the present invention, FIG. 2 is a development view of a conductor crimp portion of the crimp terminal, FIG. 3 is a cross-sectional view taken along line AA in FIG. 2 is a cross-sectional view taken along the line BB in FIG. 2, FIG. 5 is a cross-sectional view showing a state in which the conductor crimping portion is crimped to the conductor, and FIG. FIG. 7 is a cross-sectional view showing the relationship between the concave portion on the inner surface side of the reinforcing rail and the conductor after crimping the conductor crimping portion.

図１に示すように、この圧着端子１０は、端子の長手方向（接続する電線の導体の長手方向でもある）の前部に、相手コネクタ側の端子に接続される電気接続部１１を備え、その後部に、電線（図示略）の端末の露出した導体Ｗａ（図５〜図７参照）に加締められる導体圧着部１２を備え、さらにその後部に、電線の絶縁被覆の付いた部分に加締められる被覆加締部１３を備えている。また、電気接続部１１と導体圧着部１２の間に、それらの間を繋ぐ第１の繋ぎ部１４を備え、導体圧着部１２と被覆加締部１３の間に、それらの間を繋ぐ第２の繋ぎ部１５を備えている。   As shown in FIG. 1, the crimp terminal 10 includes an electrical connection portion 11 connected to a terminal on the mating connector side at the front portion in the longitudinal direction of the terminal (also the longitudinal direction of the conductor of the electric wire to be connected), The rear portion is provided with a conductor crimping portion 12 that is crimped to the exposed conductor Wa (see FIGS. 5 to 7) of the end of the electric wire (not shown), and further, the rear portion is added to the portion of the electric wire with the insulation coating. A covering caulking portion 13 to be tightened is provided. In addition, a first connecting portion 14 is provided between the electrical connecting portion 11 and the conductor crimping portion 12, and a second is provided between the conductor crimping portion 12 and the covering crimping portion 13. The connection part 15 is provided.

導体圧着部１２は、底板３１と、該底板３１の左右両側縁から上方に延設されて該底板３１の内面上に配された電線の導体を包むように加締められる一対の導体加締片３２，３２と、で断面略Ｕ字状に形成されている。また、被覆加締部１３は、底板６１と、該底板６１の左右両側縁から上方に延設されて該底板６１の内面上に配された電線（絶縁被覆の付いた部分）を包むように加締められる一対の被覆加締片６２，６２と、で断面略Ｕ字状に形成されている。   The conductor crimping portion 12 includes a bottom plate 31 and a pair of conductor crimping pieces 32 that extend upward from the left and right side edges of the bottom plate 31 and are crimped so as to wrap the conductor of the electric wire disposed on the inner surface of the bottom plate 31. , 32, and a substantially U-shaped cross section. Further, the covering crimping portion 13 is applied so as to wrap the bottom plate 61 and the electric wires (parts with insulating coating) that extend upward from the left and right side edges of the bottom plate 61 and are arranged on the inner surface of the bottom plate 61. A pair of covering crimping pieces 62, 62 to be fastened is formed in a substantially U-shaped cross section.

また、導体圧着部１２の前後の第１の繋ぎ部１４および第２の繋ぎ部１５は、共に、底板２１、５１と、該底板２１、５１の左右両側縁から上方に起立した低背の側板２２、５２と、で断面Ｕ字状に形成されている。   In addition, the first connecting portion 14 and the second connecting portion 15 before and after the conductor crimping portion 12 are both a bottom plate 21 and 51 and a low-profile side plate that stands up from the left and right side edges of the bottom plate 21 and 51. 22 and 52, and a U-shaped cross section.

ここでは、前部の電線接続部１１の底板（図示略）から最後部の被覆加締部１３までの範囲の底板２１、３１、５１、６１が、１枚の帯板状に連続して形成されている。また、第１の繋ぎ部１４の低背の側板２２の前後端は、電気接続部１１の側板（符号省略）の後端および導体圧着部１２の導体加締片３２の前端の各下半部にそれぞれ連続し、第２の繋ぎ部１５の低背の側板５２の前後端は、導体圧着部１２の導体加締片３２の後端および被覆加締部１３の被覆加締片６２の前端の各下半部にそれぞれ連続している。   Here, the bottom plates 21, 31, 51, 61 in the range from the bottom plate (not shown) of the front wire connecting portion 11 to the last cover crimping portion 13 are formed continuously in a single strip shape. Has been. Further, the front and rear ends of the low-profile side plate 22 of the first connecting portion 14 are the lower half portions of the rear end of the side plate (reference numeral omitted) of the electrical connection portion 11 and the front end of the conductor crimping piece 32 of the conductor crimping portion 12. The front and rear ends of the low-side side plate 52 of the second connecting portion 15 are the rear end of the conductor crimping piece 32 of the conductor crimping portion 12 and the front end of the covering crimping piece 62 of the covering crimping portion 13. Each lower half is continuous.

そして、この圧着端子１０では、図１〜図４に示すように、一対の各導体加締片３２，３２の根元部分（圧着時に一番小さな曲率で曲がる可能性のある部分）にそれぞれ、内面側が凹部４１となり外面側が凸部４２となった端子長手方向に延びる補強レール４０がプレス加工により形成されている。   In this crimp terminal 10, as shown in FIGS. 1 to 4, the inner surface of each of the pair of conductor crimping pieces 32, 32 (the portion that can be bent with the smallest curvature during crimping) A reinforcing rail 40 extending in the longitudinal direction of the terminal having a concave portion 41 on the side and a convex portion 42 on the outer surface side is formed by pressing.

この場合、補強レール４０の凹部４１の断面形状は、図６に示すように、凹部４１の内底面４１ｂに垂直な線に対する両内側面４１ａのなす角度θが、できるだけ小さい角度となるように設定しておく。プレス加工するため、「θ＞約２０°」あたりになるが、できるだけθがゼロに近づくように設定しておく。   In this case, as shown in FIG. 6, the cross-sectional shape of the concave portion 41 of the reinforcing rail 40 is set so that the angle θ formed by both inner side surfaces 41a with respect to a line perpendicular to the inner bottom surface 41b of the concave portion 41 is as small as possible. Keep it. Since the pressing process is performed, the angle θ is about 20 °. However, θ is set as close to zero as possible.

このように設定することにより、左右の導体加締片３２を図６中矢印Ｎのように内側に曲げて電線Ｗの導体Ｗａに加締めたときに、図７に示すように、補強レール４０の凹部４１の断面形状が、凹部４１の両内側面４１ａが内底面４１ｂに対して垂直な角度よりも内側に倒れた角度となったアリ溝型となり、圧着端子１０から導体Ｗａへの締め付け力が増加する。   By setting in this way, when the left and right conductor crimping pieces 32 are bent inward as indicated by an arrow N in FIG. 6 and crimped to the conductor Wa of the electric wire W, as shown in FIG. The recess 41 has a dovetail shape in which both inner side surfaces 41a of the recess 41 are tilted inward from an angle perpendicular to the inner bottom surface 41b, and the clamping force from the crimp terminal 10 to the conductor Wa Will increase.

また、図１および図２に示すように、導体圧着部１２の内面には、端子長手方向に直交する方向に延びる凹溝状のセレーション３５が３本設けられている。この場合のセレーション３５は、左右の補強レール４０の凹部４１を跨いで形成されており、補強レール４０の凹部４１の深さが、セレーション３５の深さよりも深くなっている。また、補強レール４０の凹部４１の長手方向の両端は、導体加締片３２の幅方向両端に開放していずに閉じている。   As shown in FIGS. 1 and 2, the inner surface of the conductor crimping portion 12 is provided with three groove-shaped serrations 35 extending in a direction orthogonal to the terminal longitudinal direction. The serration 35 in this case is formed across the concave portions 41 of the left and right reinforcing rails 40, and the depth of the concave portions 41 of the reinforcing rail 40 is deeper than the depth of the serrations 35. Further, both ends in the longitudinal direction of the concave portion 41 of the reinforcing rail 40 are closed without opening to both ends in the width direction of the conductor crimping piece 32.

この圧着端子１０の導体圧着部１２を電線の端末の導体Ｗａに圧着する場合は、まず、図示しない下型（アンビル）の載置面（上面）上に圧着端子１０を載せると共に、電線の端末の導体Ｗａを導体圧着部１２の導体加締片３２間に挿入し、底板３１の上面に載せる。そして、上型を下型に対して相対的に下降させることにより、上型の左右の案内斜面で導体加締片３２の先端側を徐々に内側に倒して行く。   When crimping the conductor crimping portion 12 of the crimping terminal 10 to the conductor Wa at the end of the electric wire, first, the crimping terminal 10 is placed on the mounting surface (upper surface) of the lower mold (anvil) (not shown), and the end of the electric wire is placed. The conductor Wa is inserted between the conductor crimping pieces 32 of the conductor crimping portion 12 and placed on the upper surface of the bottom plate 31. Then, by lowering the upper mold relative to the lower mold, the leading end side of the conductor crimping piece 32 is gradually tilted inward on the left and right guide slopes of the upper mold.

そして、さらに上型を下型に対して相対的に下降させることにより、最終的に、上型の左右の案内斜面から中央の山形部に連なる湾曲面で、導体加締片の先端を導体側に折り返すように丸めて、図５に示すように、導体加締片３２の先端同士を擦り合わせながら電線Ｗの導体Ｗａに食い込ませることにより、導体Ｗａを包むように導体加締片３２を加締める。   Further, by lowering the upper mold relative to the lower mold, the end of the conductor crimping piece is finally connected to the conductor side by a curved surface that continues from the left and right guide slopes of the upper mold to the central chevron. As shown in FIG. 5, the conductor crimping piece 32 is crimped so as to wrap the conductor Wa by causing the conductor Wa of the electric wire W to bite into the conductor Wa while rubbing the tips of the conductor crimping pieces 32 as shown in FIG. .

以上の操作により、圧着端子１０の導体圧着部１２を電線Ｗの導体Ｗａに接続することができる。なお、被覆加締部１３についても、同様に、下型と上型を用いて被覆加締片６２を内側に徐々に曲げて行き、被覆加締片６２を電線の絶縁被覆の付いた部分に加締める。こうすることにより、圧着端子１０を電線に電気的および機械的に接続することができる。   Through the above operation, the conductor crimping portion 12 of the crimp terminal 10 can be connected to the conductor Wa of the electric wire W. Similarly, with respect to the covering crimping portion 13, the covering crimping piece 62 is gradually bent inward using the lower mold and the upper mold, and the covering crimping piece 62 is attached to the portion of the electric wire with the insulation coating. Clamp. By carrying out like this, the crimp terminal 10 can be electrically and mechanically connected to an electric wire.

このように圧着を行う本実施形態の圧着端子１０によれば、左右の導体加締片３２の各根元部分に補強レール４０を設けているので、導体加締片３２の根元部分の剛性を高めることができる。そのため、左右の導体加締片３２を電線Ｗの導体Ｗａに加締めた状態での、サーマルショック試験による導体加締片３２の緩みを防止することができる。   According to the crimp terminal 10 of the present embodiment that performs crimping in this way, the reinforcing rails 40 are provided at the respective base portions of the left and right conductor crimping pieces 32, so that the rigidity of the root portion of the conductor crimping pieces 32 is increased. be able to. Therefore, loosening of the conductor crimping pieces 32 due to the thermal shock test in a state where the left and right conductor crimping pieces 32 are crimped to the conductor Wa of the electric wire W can be prevented.

即ち、電線Ｗの導体Ｗａに圧着端子１０の導体加締片３２を加締めた部分に対してサーマルショック試験を行った場合、導体圧着部１２の剛性が不足気味であると、熱膨張と熱収縮の繰り返しにより、常温状態にしたときに導体加締片３２の先端が原形状に戻り切らずに、導体加締片３２の先端が開き気味になったり、導体Ｗａに対する導体加締片３２の先端の食い込みが浅くなってしまったりすることがある。特に端子材料と導体材料が異なり両者間に熱膨張差があると、その現象が顕著に起こりやすくなる。そうなると、電線Ｗに対する圧着端子１０による締め付け力が低下し、電気接続抵抗が大きくなったり、機械的結合力が弱くなったりする。   That is, when the thermal shock test is performed on the portion where the conductor crimping piece 32 of the crimp terminal 10 is crimped on the conductor Wa of the electric wire W, if the rigidity of the conductor crimping portion 12 is insufficient, thermal expansion and heat Due to repeated contraction, the tip of the conductor crimping piece 32 does not return to its original shape when it is brought to a normal temperature state, and the tip of the conductor crimping piece 32 feels open, or the conductor crimping piece 32 with respect to the conductor Wa The leading edge of the tip may become shallow. In particular, if the terminal material and the conductor material are different and there is a difference in thermal expansion between them, the phenomenon is likely to occur remarkably. If it becomes so, the clamping force by the crimp terminal 10 with respect to the electric wire W will fall, an electrical connection resistance will become large, or a mechanical coupling force will become weak.

その点、本実施形態の圧着端子１０では、補強レール４０の追加により導体加締片３２の剛性が強化されていることにより、サーマルショック試験を行った場合の緩み（つまり、導体加締片３２が原形状に戻り切らずに、導体加締片３２の先端が開き気味になったり、導体加締片３２の先端の導体Ｗａに対する食い込みが浅くなったりする現象）を防止することができ、それにより、電気的接続性能の向上と機械的接続性能の向上を図ることができる。   In that respect, in the crimp terminal 10 of the present embodiment, the rigidity of the conductor crimping piece 32 is enhanced by the addition of the reinforcing rail 40, so that the looseness when the thermal shock test is performed (that is, the conductor crimping piece 32). The phenomenon that the tip of the conductor crimping piece 32 becomes open and the bite into the conductor Wa at the tip of the conductor crimping piece 32 becomes shallow without returning to the original shape can be prevented. As a result, it is possible to improve electrical connection performance and mechanical connection performance.

また、補強レール４０の内面側が端子長手方向に延びる凹部４１となっているので、導体加締片３２を導体Ｗａに加締める際に、その凹部Ｗａがセレーション３５と同様の機能を果たすことになり、導体加締片３２の導体Ｗａに対する締め付け力が増加し、その点からも導体加締片３２による導体Ｗａに対する接圧の増大が図れる。   Further, since the inner surface side of the reinforcing rail 40 is a concave portion 41 extending in the terminal longitudinal direction, the concave portion Wa performs the same function as the serration 35 when the conductor crimping piece 32 is crimped to the conductor Wa. The clamping force of the conductor crimping piece 32 to the conductor Wa increases, and from this point, the contact pressure of the conductor crimping piece 32 to the conductor Wa can be increased.

また、本実施形態における補強レール４０の場合、導体加締片３２を導体Ｗａに加締めた段階で、補強レール４０の内面側の凹部４１の断面形状がアリ溝型に窄まるので、より一層導体加締片３２の導体Ｗａに対する締め付け力を高めることができる。   Further, in the case of the reinforcing rail 40 in the present embodiment, the cross-sectional shape of the recess 41 on the inner surface side of the reinforcing rail 40 is narrowed into a dovetail shape at the stage where the conductor crimping piece 32 is crimped to the conductor Wa. The tightening force of the conductor crimping piece 32 on the conductor Wa can be increased.

また、導体圧着部１２の内面には、従来の圧着端子と同様にセレーション３５が設けられているので、圧着端子１０と導体Ｗａの接圧の増加を図ることができる。また、電線Ｗがアルミ電線の場合は、セレーション３５に対するアルミ導体Ｗａの摺動により、圧着端子１０と導体Ｗａの凝着面積の増大が図れ、電気的接続性能と機械的接続性能の向上が図れる。   Moreover, since the serration 35 is provided in the inner surface of the conductor crimping part 12 similarly to the conventional crimp terminal, the contact pressure between the crimp terminal 10 and the conductor Wa can be increased. Further, when the electric wire W is an aluminum electric wire, the adhesion area between the crimp terminal 10 and the conductor Wa can be increased by sliding the aluminum conductor Wa with respect to the serration 35, and the electrical connection performance and the mechanical connection performance can be improved. .

また、セレーション３５を補強レール４０の凹部４１を跨いで設けているので、長いセレーション３５を、導体圧着部１２の底板３１から導体加締片３２の内面の広い範囲にわたり形成することができ、セレーション３５と凹部４１の存在により接圧の増加を図ることができる。   Further, since the serration 35 is provided across the recess 41 of the reinforcing rail 40, the long serration 35 can be formed over a wide range from the bottom plate 31 of the conductor crimping portion 12 to the inner surface of the conductor crimping piece 32. The presence of the recess 35 and the recess 41 can increase the contact pressure.

また、本実施形態によれば、セレーション３５の深さを浅くし、補強レール４０の凹部４１の深さを、セレーション３５の深さよりも深く設定したので、補強レール４０の凹部４１の深さが深い分だけ、補強レール４０による導体加締片３２の根元部分に対する補強効果を高めることができる。   Further, according to the present embodiment, the depth of the serration 35 is made shallow, and the depth of the recess 41 of the reinforcing rail 40 is set deeper than the depth of the serration 35, so that the depth of the recess 41 of the reinforcing rail 40 is The reinforcement effect on the base portion of the conductor crimping piece 32 by the reinforcing rail 40 can be enhanced by the deeper portion.

また、本実施形態の圧着端子１０では、補強レール４０の凹部４１の長手方向の両端が閉じているので、凹部４１の両端が導体加締片３２の幅方向両端に開放している場合と比べて、補強レール４０の補強効果を大きくすることができる。   Moreover, in the crimp terminal 10 of this embodiment, since the both ends of the recessed part 41 of the reinforcement rail 40 in the longitudinal direction are closed, compared with the case where the both ends of the recessed part 41 are open | released at the width direction both ends of the conductor crimping piece 32. Thus, the reinforcing effect of the reinforcing rail 40 can be increased.

なお、上記実施形態においては、セレーション３５の深さよりも補強レール４０の凹部４１の深さが深くなっている場合を示したが、図８および図９に示す第２実施形態の圧着端子の導体圧着部１２Ｂのように、セレーション３５の深さと補強レール４０の凹部７の深さを等しく設定してもよい。   In the above embodiment, the case where the depth of the recess 41 of the reinforcing rail 40 is deeper than the depth of the serration 35 is shown. However, the conductor of the crimp terminal of the second embodiment shown in FIGS. Like the crimping part 12B, the depth of the serration 35 and the depth of the recess 7 of the reinforcing rail 40 may be set equal.

また、図１０〜図１２に示す第３実施形態の圧着端子１０Ｃの導体圧着部１２Ｃのように、セレーション３５を、左右の補強レール４０の凹部４１の間に収まる長さで設けてもよい。   Moreover, you may provide the serration 35 in the length which fits between the recessed parts 41 of the left and right reinforcement rail 40 like the conductor crimping | compression-bonding part 12C of the crimp terminal 10C of 3rd Embodiment shown in FIGS.

この場合は、導体圧着部１２の底板３１の内面に限定してセレーション３５を形成することができるので、セレーション３５を設けることによる導体加締片３２の剛性の低下を避けることができる。   In this case, since the serration 35 can be formed only on the inner surface of the bottom plate 31 of the conductor crimping portion 12, it is possible to avoid a decrease in rigidity of the conductor crimping piece 32 due to the provision of the serration 35.

さらに、前記各実施形態において、圧着端子に接続する電線の導体は、アルミ電線の導体の他に、銅電線の導体等でもよい。   Furthermore, in each said embodiment, the conductor of the electric wire connected to a crimp terminal may be a conductor of a copper electric wire other than the conductor of an aluminum electric wire.

１０ 圧着端子
１１ 電気接続部
１２ 導体圧着部
１３ 被覆加締部
３１ 底板
３２ 導体加締片
４０ 補強レール
４１ 凹部
４２ 凸部
Ｗ 電線
Ｗａ 導体 DESCRIPTION OF SYMBOLS 10 Crimp terminal 11 Electrical connection part 12 Conductor crimping part 13 Covering crimping part 31 Bottom plate 32 Conductor crimping piece 40 Reinforcement rail 41 Concave part 42 Convex part W Electric wire Wa Conductor

Claims (7)

電線の導体に圧着して接続される導体圧着部を有し、該導体圧着部が、底板と、該底板の左右両側縁から上方に延設されて該底板の内面上に配された前記導体を包むように加締められる一対の導体加締片と、で断面略Ｕ字状に形成された圧着端子において、
前記一対の各導体加締片の根元部分にそれぞれ、内面側が凹部となり外面側が凸部となった端子長手方向に延びる補強レールがプレス加工により形成されていることを特徴とする圧着端子。 A conductor crimping portion connected by crimping to a conductor of the electric wire, the conductor crimping portion extending upward from the left and right side edges of the bottom plate and disposed on the inner surface of the bottom plate; In a crimp terminal formed in a substantially U-shaped cross section with a pair of conductor crimping pieces that are crimped so as to wrap
A crimp terminal, wherein a reinforcing rail extending in a longitudinal direction of a terminal having a concave portion on an inner surface side and a convex portion on an outer surface side is formed by pressing at a base portion of each of the pair of conductor crimping pieces. 請求項１に記載の圧着端子であって、
前記補強レールの凹部の断面形状が、前記導体加締片を電線の導体に加締めたときに、前記凹部の両内側面が内底面に対して垂直な角度よりも内側に倒れた角度となったアリ溝型となるように形成されていることを特徴とする圧着端子。 The crimp terminal according to claim 1,
The cross-sectional shape of the concave portion of the reinforcing rail is such that when the conductor crimping piece is crimped to the conductor of the electric wire, both inner side surfaces of the concave portion are tilted inward from an angle perpendicular to the inner bottom surface. A crimp terminal characterized in that it is formed in a dovetail shape. 請求項１または２に記載の圧着端子であって、
前記導体圧着部の内面に、端子長手方向に直交する方向に延びる凹溝状のセレーションが設けられていることを特徴とする圧着端子。 The crimp terminal according to claim 1 or 2,
A crimp terminal having a groove-shaped serration extending in a direction orthogonal to a terminal longitudinal direction on an inner surface of the conductor crimping portion. 請求項３に記載の圧着端子であって、
前記セレーションが、前記左右の補強レールの凹部を跨いで形成されていることを特徴とする圧着端子。 The crimp terminal according to claim 3,
The crimp terminal, wherein the serration is formed across the concave portions of the left and right reinforcing rails. 請求項３に記載の圧着端子であって、
前記セレーションが、前記左右の補強レールの凹部の間に収まるように形成されていることを特徴とする圧着端子。 The crimp terminal according to claim 3,
The crimp terminal, wherein the serration is formed so as to fit between the recesses of the left and right reinforcing rails. 請求項１〜５のいずれか１項に記載の圧着端子であって、
前記補強レールの凹部の深さが、前記セレーションの深さよりも深くなっていることを特徴とする圧着端子。 The crimp terminal according to any one of claims 1 to 5,
The crimp terminal, wherein a depth of the concave portion of the reinforcing rail is deeper than a depth of the serration. 請求項１〜６のいずれか１項に記載の圧着端子であって、
前記補強レールの凹部の長手方向の両端が閉じていることを特徴とする圧着端子。 The crimp terminal according to any one of claims 1 to 6,
A crimp terminal, wherein both ends in the longitudinal direction of the concave portion of the reinforcing rail are closed.
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