JP2013251181A - Terminal metal fitting - Google Patents

Terminal metal fitting Download PDF

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Publication number
JP2013251181A
JP2013251181A JP2012125969A JP2012125969A JP2013251181A JP 2013251181 A JP2013251181 A JP 2013251181A JP 2012125969 A JP2012125969 A JP 2012125969A JP 2012125969 A JP2012125969 A JP 2012125969A JP 2013251181 A JP2013251181 A JP 2013251181A
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metal wire
bottom plate
barrel
caulking
pair
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JP2012125969A
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Masayuki Taniguchi
谷口　　正幸
Katsuhiro Kinoshita
勝弘 木下
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SMK Corp
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SMK Corp
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Priority to JP2012125969A priority Critical patent/JP2013251181A/en
Priority to CN 201210592681 priority patent/CN103457050A/en
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Abstract

PROBLEM TO BE SOLVED: To provide a terminal metal fitting that can easily connect a metal wire and in which a close contact structure of a conductive portion is difficult to vary after connection.SOLUTION: A conducting barrel 18 of a metal wire connection section 14 has: a first bottom plate section 22 extending from a contact point 16; and a pair of first caulking pieces 24 extending rightward and leftward from the first bottom plate section 22. A first end 32 of a metal wire 12 is arranged in an inner part surrounded by the first bottom plate section 22 and the first caulking pieces 24, and tips of the first caulking pieces 24 are caulked to bite into a periphery 32a, so as to fix the metal wire 12 under a conductive state. A holding barrel 20 of the metal wire connection section 14 has: a second bottom plate section 26 extending from the first bottom plate section 22; and a pair of second caulking pieces 28 that extend rightward and leftward from the second bottom plate section 26, and on the inner face of which an uneven section 30 is formed. A second end of the metal wire 12 is arranged in an inner part surrounded by the second bottom plate section 26 and the second caulking pieces 28, and a tip of the uneven section 30 is caulked to bite into a periphery 34a, so as to fix the metal wire 12.

Description

この発明は、電気配線用の金属線の一端が接続され、外部配線との電気接点となる端子金具に関する。   The present invention relates to a terminal fitting to which one end of a metal wire for electrical wiring is connected and serves as an electrical contact with external wiring.

従来、電気配線用のハーネス等に使用される端子金具として、例えば特許文献１に開示されているように、アルミニウム電線の端部を内側に配して外側から圧着される圧着部と、外部配線との電気接点となる本体とを備え、圧着部の内側面に所定の突起部材を固定したコネクタがあった。このコネクタは、アルミニウム電線が圧着部に圧着されると、突起部材の突起がアルミニウムの周面に食い込んで導通する。その後、アルミニウム電線を引っ張ったり曲げたりしても導通部分の密着力の低下が比較的少なく、導通部分の電気抵抗が大きくなりにくいものである。   Conventionally, as terminal fittings used for electrical wiring harnesses, etc., for example, as disclosed in Patent Document 1, an end portion of an aluminum electric wire is arranged on the inner side and is crimped from the outside, and external wiring There is a connector having a predetermined projecting member fixed to the inner surface of the crimping portion. In this connector, when the aluminum electric wire is crimped to the crimping portion, the projection of the projection member bites into the peripheral surface of the aluminum and becomes conductive. Thereafter, even if the aluminum electric wire is pulled or bent, the decrease in the adhesion strength of the conductive portion is relatively small, and the electrical resistance of the conductive portion is difficult to increase.

特開２０１１−１８７４００号公報JP 2011-187400 A

しかし、特許文献１のコネクタは、アルミニウム電線に加わる張力に対する強度が向上するように改善されているとはいえ、一定以上の強い張力が加わると、やはりアルミニウムと圧着部との密着構造が変化し、導通部分の電気抵抗が大きくなってしまう。従って、より一層の改善が求められていた。   However, although the connector of Patent Document 1 has been improved so as to improve the strength against the tension applied to the aluminum electric wire, when a certain level of strong tension is applied, the adhesion structure between the aluminum and the crimping portion also changes. As a result, the electrical resistance of the conductive portion increases. Therefore, further improvement has been demanded.

また、アルミニウムと圧着部との密着構造の安定度を高めるため、圧着後にハンダ付けを行って補強する方法も考えられるが、作業工数が増加し、アルミニウム用の特殊なハンダやフラックスを用意しなければならないので、コスト増になる。また、ハンダ付け作業のばらつきにより、接続強度に個体差が生じやすい。   In addition, in order to improve the stability of the adhesion structure between aluminum and the crimping part, it is possible to reinforce by soldering after crimping, but the work man-hours increase and special solder and flux for aluminum must be prepared. This will increase costs. Also, individual differences are likely to occur in connection strength due to variations in soldering work.

この発明は、上記背景技術に鑑みて成されたものであり、金属線を容易に接続することができ、接続後も導通部分の密着構造が変化しにくい端子金具を提供することを目的とする。   The present invention has been made in view of the background art described above, and an object of the present invention is to provide a terminal fitting that can easily connect a metal wire and that does not easily change the adhesion structure of the conductive portion even after connection. .

この発明は、金属線の一端が接続される金属線接続部と、外部配線との電気接点となる接点部とを備え、前記金属線接続部は、第一底板部、及び前記第一底板部から左右に延設された一対の第一かしめ片を有し、前記第一底板部及び前記一対の第一かしめ片に囲まれた内側に、前記金属線の終端部分である第一端部を配し、前記第一かしめ片の先端が前記第一端部の周面に食い込むようにかしめ加工され、前記金属線が導通状態で固定される導通用バレルと、前記第一底板部の端部から延設された第二底板部、及び前記第二底板部から左右に延設され内側面に凹凸部が形成された一対の第二かしめ片を有し、前記第二底板部及び前記一対の第二かしめ片に囲まれた内側に、前記金属線の終端から内側に入った部分である第二端部を配し、前記第二かしめ片の前記凹凸部の先端が前記第二端部の周面に食い込むようにかしめ加工され、前記金属線が固定される保持用バレルとで構成されている端子金具である。特に、前記第一底板部が、前記接点部の端部から延設されていると良い。   The present invention includes a metal wire connecting portion to which one end of a metal wire is connected, and a contact portion serving as an electrical contact with an external wiring, and the metal wire connecting portion includes a first bottom plate portion and the first bottom plate portion. A pair of first caulking pieces extended from side to side, and a first end portion which is a terminal portion of the metal wire is formed on the inner side surrounded by the first bottom plate portion and the pair of first caulking pieces. A conductive barrel that is crimped so that a tip of the first crimped piece bites into a peripheral surface of the first end, and the metal wire is fixed in a conductive state, and an end of the first bottom plate portion A second bottom plate portion extending from the second bottom plate portion, and a pair of second caulking pieces extending left and right from the second bottom plate portion and having an uneven portion formed on an inner surface thereof, the second bottom plate portion and the pair of pair Arranged on the inner side surrounded by the second caulking piece is a second end portion that is a portion entering the inner side from the end of the metal wire, Second tip of the concavo-convex portion of the caulking pieces are caulked to bite into the peripheral surface of the second end portion, wherein the metal wire is a terminal fitting is composed of a holding barrel to be fixed. In particular, it is preferable that the first bottom plate portion extends from an end portion of the contact portion.

また、前記金属線接続部には、導電部の周面が絶縁層で被覆された前記金属線が接続され、前記導通用バレルの前記第一かしめ片の先端が、前記第一端部の前記絶縁層を突き破り、前記導電部の周面に食い込むようにかしめ加工される端子金具である。   In addition, the metal wire connecting portion is connected to the metal wire whose peripheral surface of the conductive portion is covered with an insulating layer, and the tip of the first caulking piece of the conduction barrel is connected to the first end portion. It is a terminal fitting that is swaged so as to break through the insulating layer and bite into the peripheral surface of the conductive portion.

また、前記第二かしめ片の前記凹凸部は、平坦面に多数の窪みを形成することによって設けられている。   Moreover, the said uneven | corrugated | grooved part of said 2nd crimping piece is provided by forming many hollows in a flat surface.

この発明の端子金具は、金属線との電気的接続が、導通用バレルの第一かしめ片が金属線の第一端部に食い込むことによって行われ、導通部分の電気抵抗を十分に小さくすることができる。さらに、金属線の機械的接続が、保持用バレル内側面の凹凸部の先端が金属線の第二端部に食い込むことによって行われ、適度な断面積を確保しながら、しっかりと固定される。従って、金属線の第一及び第二端部が接続された状態で、金属線に引っ張り力等によるストレスが生じたとしても、断面積による引っ張り強度が確保されると共に、そのストレスが導電用バレルの導通部分に伝わらないので、導通部分の密着構造が変化せず、電気抵抗の小さい状態が維持される。   In the terminal fitting of the present invention, the electrical connection with the metal wire is performed by the first caulking piece of the conduction barrel biting into the first end portion of the metal wire, and the electrical resistance of the conduction portion is made sufficiently small. Can do. Furthermore, the mechanical connection of the metal wire is performed by the leading end of the concavo-convex portion on the inner side surface of the holding barrel biting into the second end portion of the metal wire, and the metal wire is firmly fixed while securing an appropriate cross-sectional area. Therefore, even if the first and second end portions of the metal wire are connected, even if a stress due to a tensile force or the like is generated on the metal wire, the tensile strength due to the cross-sectional area is secured, and the stress is applied to the conductive barrel. Therefore, the close contact structure of the conductive portion does not change, and the state of low electrical resistance is maintained.

また、導電用バレル及び保持用バレルに金属線を接続する作業は、特別な治工具を準備することなく、一般的な電工ペンチ等の工具でも行うことができる。   Moreover, the operation | work which connects a metal wire to the barrel for electroconductivity and the barrel for holding | maintenance can also be performed with tools, such as a general electric pliers, without preparing a special jig.

この発明の端子金具の一実施形態を示す斜視図である。It is a perspective view which shows one Embodiment of the terminal metal fitting of this invention. この実施形態の端子金具に金属線を接続した状態を示す斜視図である。It is a perspective view which shows the state which connected the metal wire to the terminal metal fitting of this embodiment. 図２のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 図２のＢ−Ｂ断面図である。It is BB sectional drawing of FIG. 図２のＣ−Ｃ断面図である。It is CC sectional drawing of FIG. 絶縁層で被覆された金属線を接続した場合の図２のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 2 at the time of connecting the metal wire coat | covered with the insulating layer. 絶縁層で被覆された金属線を接続した場合の図２のＢ−Ｂ断面図である。It is BB sectional drawing of FIG. 2 at the time of connecting the metal wire coat | covered with the insulating layer.

以下、この発明の端子金具の一実施形態について、図面に基づいて説明する。この実施形態の端子金具１０は、金属線１２の素材よりも硬い金属材料で形成され、図１に示すように、金属線１２の一端が接続される金属線接続部１４と、図示しない外部配線との電気接点となる接点部１６とを備えている。接点部１６は、ここでは略長方形の平板であるが、円形、楕円形、Ｕ字形の平板、筒状に加工した形状など、外部配線の形態に合わせて自由に変更することができる。   Hereinafter, an embodiment of a terminal fitting of the present invention will be described based on the drawings. The terminal fitting 10 of this embodiment is formed of a metal material harder than the material of the metal wire 12, and as shown in FIG. 1, a metal wire connection portion 14 to which one end of the metal wire 12 is connected, and an external wiring (not shown) The contact part 16 used as an electrical contact is provided. The contact portion 16 is a substantially rectangular flat plate here, but can be freely changed according to the form of the external wiring, such as a circular shape, an elliptical shape, a U-shaped flat plate, or a cylindrical shape.

金属線接続部１４は、導通用バレル１８と保持用バレル２０とで構成されている。導通用バレル１８は、接点部１４の端部から延設された第一底板部２２と、第一底板部２２から左右に立設されて対向する一対の第一かしめ片２４とを有している。第一かしめ片２４が対向する間隔は、金属線１２の外径よりも僅かに広い。一方の第一かしめ片２４の先端から第一底板部２２を通って他方の第一かしめ片２４の先端に至る内側面の長さは、金属線１２の外周長さよりも長い。また、第一かしめ片２４の先端部は、角部が面取りされてやや尖っている。   The metal wire connection portion 14 is composed of a conduction barrel 18 and a holding barrel 20. The conduction barrel 18 includes a first bottom plate portion 22 extending from the end of the contact portion 14 and a pair of first caulking pieces 24 that are erected on the left and right sides of the first bottom plate portion 22 and face each other. Yes. The interval at which the first caulking pieces 24 face each other is slightly wider than the outer diameter of the metal wire 12. The length of the inner surface from the tip end of one first caulking piece 24 through the first bottom plate portion 22 to the tip end of the other first caulking piece 24 is longer than the outer peripheral length of the metal wire 12. Further, the tip end portion of the first caulking piece 24 has a corner portion that is chamfered and slightly sharpened.

保持用バレル２０は、第一底板部２２の端部（接点部１６と反対側の端部）から延設された第二底板部２６と、第二底板部２６から左右に立設されて対向する一対の第二かしめ片２８とを有している。第二かしめ片２８が対向する間隔は、金属線１２の外径よりも僅かに広い。一方の第二かしめ片２８の先端から第二底板部２６を通って他方の第二かしめ片２８の先端に至る内側面の長さは、金属線１２の外周長さと同じか、又は僅かに短い。また、一対の第二かしめ片２８の内側面には、平坦な表面に多数の窪みを形成することにより、凹凸部３０が設けられている。ここでは、第二底板部２６の内側面にも同様の凹凸部３０が設けられているが、第二底板部２６の幅が狭い場合は省略してもよい。   The holding barrel 20 is opposed to a second bottom plate portion 26 extending from the end portion of the first bottom plate portion 22 (the end portion on the side opposite to the contact portion 16) and from the second bottom plate portion 26 to the left and right. And a pair of second caulking pieces 28. The interval at which the second caulking pieces 28 face each other is slightly wider than the outer diameter of the metal wire 12. The length of the inner surface from the tip of one second caulking piece 28 through the second bottom plate portion 26 to the tip of the other second caulking piece 28 is the same as or slightly shorter than the outer peripheral length of the metal wire 12. . In addition, on the inner side surfaces of the pair of second caulking pieces 28, the concave and convex portions 30 are provided by forming a large number of depressions on a flat surface. Here, although the same uneven part 30 is provided also in the inner surface of the 2nd bottom plate part 26, when the width | variety of the 2nd bottom plate part 26 is narrow, you may abbreviate | omit.

次に、端子金具１０の金属線接続部１４に金属線１２を接続する方法の手順の一例を説明する。まず、金属線１２の終端部分である第一端部３２を、導通用バレル１８の第一底板部２２及び一対の第一かしめ片２４に囲まれた内側に差し込む。それと同時に、金属線１２の終端から内側に入った部分である第二端部３４を、保持用バレル２０の第二底板部２６及び一対の第二かしめ片２８に囲まれた内側に差し込む。   Next, an example of a procedure of a method for connecting the metal wire 12 to the metal wire connecting portion 14 of the terminal fitting 10 will be described. First, the first end portion 32, which is the terminal portion of the metal wire 12, is inserted inside the first bottom plate portion 22 and the pair of first caulking pieces 24 of the conduction barrel 18. At the same time, the second end portion 34, which is the portion entering the inside from the terminal end of the metal wire 12, is inserted into the inside surrounded by the second bottom plate portion 26 and the pair of second caulking pieces 28 of the holding barrel 20.

この状態で、電工ペンチ等の工具を使用して導通用バレル１８の部分をかしめる。具体的には、図２、図３に示すように、第一底板部２２及び一対の第一かしめ片２４が金属線１２の第一端部３２の周面３２ａを覆い、かつ、第一かしめ片２４の先端が第一端部３２の周面３２ａに深く食い込むようにかしめ加工し、一体に固定する。すると、金属線１２内に食い込んだ第一かしめ片２４の先端部分の密着構造により、金属線１２と導通用バレル１８とが小さい電気抵抗でしっかりと導通する。また、導通用バレル１８の内側面に第一端部３２の周面３２ａが接触する部分も導通する。   In this state, the portion of the conduction barrel 18 is caulked using a tool such as electric pliers. Specifically, as shown in FIGS. 2 and 3, the first bottom plate portion 22 and the pair of first caulking pieces 24 cover the peripheral surface 32 a of the first end portion 32 of the metal wire 12 and the first caulking portion. It crimps so that the front-end | tip of the piece 24 may dig deeply into the surrounding surface 32a of the 1st end part 32, and it fixes integrally. Then, the metal wire 12 and the conduction barrel 18 are firmly connected with a small electric resistance due to the close contact structure of the first caulking piece 24 biting into the metal wire 12. Further, the portion where the peripheral surface 32 a of the first end portion 32 contacts the inner side surface of the conduction barrel 18 is also conducted.

次に、保持用バレルの部分をかしめる。具体的には、図２、図４、図５に示すように、第二底板部２６及び一対の第二かしめ片２８が金属線１２の第二端部３４の周面３４ａを覆い、かつ、凹凸部３０の先端が第二端部３４の周面３４ａに食い込むようにかしめ加工し、一体に固定する。すると、凹凸部３０が有する多数の先端部が金属線１２に食い込むことにより、金属線１２が保持用バレル２０にしっかりと固定される。また、保持用バレル２０の内側面に第二端部３４が接触する部分も導通する。   Next, the holding barrel portion is caulked. Specifically, as shown in FIGS. 2, 4, and 5, the second bottom plate portion 26 and the pair of second caulking pieces 28 cover the peripheral surface 34 a of the second end portion 34 of the metal wire 12, and It crimps so that the front-end | tip of the uneven | corrugated | grooved part 30 may bite into the surrounding surface 34a of the 2nd end part 34, and it fixes integrally. Then, the metal wire 12 is firmly fixed to the holding barrel 20 by the many tip portions of the uneven portion 30 biting into the metal wire 12. Further, the portion where the second end 34 contacts the inner side surface of the holding barrel 20 is also conducted.

以上説明したように、この実施形態の端子金具１０は、金属線１２との電気的接続が、導通用バレル１８の第一かしめ片２４が金属線１２の第一端部３２に適度に食い込むことによって行われ、導通部分の電気抵抗を非常に小さくすることができる。また、金属線１２の機械的接続が、保持用バレル２０の内側面に形成された凹凸部３０の先端が金属線１２の第二端部３４に食い込むことによって行われ、しっかりと固定される。従って、金属線１２の第一及び第二端部３２，３４が接続された状態で、金属線１２に外部からの張力によるストレスが生じたとしても、そのストレスが導電用バレル１８の導通部分に伝わらないので、導通部分の密着構造が変化せず、電気抵抗の小さい状態が維持される。   As described above, in the terminal fitting 10 of this embodiment, the electrical connection with the metal wire 12 is such that the first caulking piece 24 of the conduction barrel 18 appropriately bites into the first end portion 32 of the metal wire 12. The electrical resistance of the conducting part can be made very small. Further, the mechanical connection of the metal wire 12 is performed by the tip of the concavo-convex portion 30 formed on the inner side surface of the holding barrel 20 being bitten into the second end portion 34 of the metal wire 12, and is firmly fixed. Therefore, even if the first and second end portions 32 and 34 of the metal wire 12 are connected and the metal wire 12 is subjected to stress due to external tension, the stress is applied to the conductive portion of the conductive barrel 18. Since it is not transmitted, the close contact structure of the conductive portion does not change, and the state of low electrical resistance is maintained.

また、導電用バレル１８、保持用バレル２０に金属線１２を接続する作業は、特別な治工具を準備することなく、一般的な電工ペンチ等の工具でも容易に行うことができる。   Moreover, the operation | work which connects the metal wire 12 to the barrel 18 for electroconductivity and the barrel 20 for holding can be easily performed with tools, such as a general electric pliers, without preparing a special jig.

さらに、端子金具１０は、接続対象の金属線１２が、導電部１２ａの周面が絶縁層１２ｂで覆われた被覆電線等であってもよく、絶縁層１２ｂを除去する作業を行わなくても、上記と同様の方法で簡単に接続することができる。ここで、絶縁層１２ａとは、例えば、絶縁用エナメル被覆等の絶縁膜や、酸化アルミニウム等の金属の表面に形成された酸化膜等を含むものである。   Further, in the terminal fitting 10, the metal wire 12 to be connected may be a covered electric wire or the like in which the peripheral surface of the conductive portion 12a is covered with the insulating layer 12b, and the work for removing the insulating layer 12b may be omitted. It can be easily connected in the same manner as described above. Here, the insulating layer 12a includes, for example, an insulating film such as an enamel coating for insulation, an oxide film formed on the surface of a metal such as aluminum oxide, and the like.

絶縁層１２ｂがある場合、導通用バレル１８部分の接続は、図６に示すように、第一底板部２２及び一対の第一かしめ片２４が金属線１２の第一端部３２の絶縁層１２ｂの表面を覆い、かつ、第一かしめ片２４の先端が第一端部３２の絶縁層１２ｂを突き破って導電部１２ａの周面に深く食い込むようにかしめ加工し、一体に固定する。すると、導電部１２ａ内に食い込んだ第一かしめ片２４の先端部分の密着構造により、金属線１２と導通用バレル１８とが小さい電気抵抗でしっかりと導通する。このとき、導通用バレル１８の内側面と第一端部３２の導電部１２ａは、間に絶縁層１２ｂが介在するので導通しないが、第一かしめ片２４の先端部分によって導通が十分に確保されるので問題ない。   When the insulating layer 12b is present, the connection of the conductive barrel 18 is performed by connecting the first bottom plate portion 22 and the pair of first caulking pieces 24 to the insulating layer 12b at the first end portion 32 of the metal wire 12, as shown in FIG. The first caulking piece 24 is caulked so that the tip of the first caulking piece 24 penetrates the insulating layer 12b of the first end portion 32 and deeply penetrates into the peripheral surface of the conductive portion 12a, and is fixed integrally. Then, the metal wire 12 and the conduction barrel 18 are firmly connected with a small electric resistance due to the close contact structure of the first caulking piece 24 biting into the conductive portion 12a. At this time, the inner side surface of the conduction barrel 18 and the conductive portion 12a of the first end portion 32 do not conduct because the insulating layer 12b is interposed therebetween, but conduction is sufficiently ensured by the tip portion of the first caulking piece 24. So no problem.

また、保持用バレルの部分の接続は、図７に示すように、第二底板部２６及び一対の第二かしめ片２８が金属線１２の第二端部３４の絶縁層１２ｂの表面を覆い、かつ、凹凸部３０の先端が第二端部３４の導電部１２ａまで食い込むようにかしめ加工し、一体に固定する。すると、凹凸部３０が有する多数の先端部が導体部１２ａに食い込むことにより、金属線１２が保持用バレル２０にしっかりと固定される。このとき、保持用バレル２０の内側面と第一端部３２の導電部１２ａは、間に絶縁層１２ａが介在するので必ずしも導通しないが、導通用バレル１８の接続によって十分な導通が確保されるので問題ない。   Further, as shown in FIG. 7, the connection of the holding barrel portion is such that the second bottom plate portion 26 and the pair of second caulking pieces 28 cover the surface of the insulating layer 12b of the second end portion 34 of the metal wire 12, And it caulks so that the front-end | tip of the uneven | corrugated | grooved part 30 may bite into the electroconductive part 12a of the 2nd edge part 34, and it fixes integrally. Then, the metal wire 12 is firmly fixed to the holding barrel 20 by the many tip portions of the concavo-convex portion 30 biting into the conductor portion 12a. At this time, the inner surface of the holding barrel 20 and the conductive portion 12a of the first end portion 32 do not necessarily conduct because the insulating layer 12a is interposed therebetween, but sufficient conduction is ensured by the connection of the conducting barrel 18. So no problem.

なお、この発明の端子金具は上記実施形態に限定されるものではない。金属線を接続する前の導通用バレルと保持用バレルの形状は、図１に示すような断面Ｕ字状でなくてもよい。かしめ加工により上記の仕上がり状態が得られれば、かしめ加工用の治工具の形状に合わせ、例えば、底板部や一対のかしめ片を外向きに湾曲させた形状にしたり、底板部及び一対のかしめ片を平坦に展開した形状にしたりすることができる。   In addition, the terminal metal fitting of this invention is not limited to the said embodiment. The shapes of the conducting barrel and the holding barrel before connecting the metal wires may not be U-shaped in cross section as shown in FIG. If the above-described finished state is obtained by caulking, for example, the bottom plate part and the pair of caulking pieces are curved outward, or the bottom plate part and the pair of caulking pieces are matched to the shape of the jig for jigging. Can be formed into a flattened shape.

また、保持用バレルの内側面の凹凸部は、図１に示すような平坦な表面に多数の窪みを形成したものに限定されず、例えば、平坦な表面を波目状、網目状その他形状に加工された粗面であって、凹凸の先端が金属線の周面に食い込む程度の粗さを有しものであればよい。   Further, the uneven portion on the inner side surface of the holding barrel is not limited to the flat surface as shown in FIG. 1 formed with many depressions. For example, the flat surface has a wave shape, a mesh shape, or other shapes. What is necessary is just the processed rough surface, Comprising: As long as the front-end | tip of an unevenness | corrugation has the roughness of the extent which bites into the surrounding surface of a metal wire.

また、導通用バレルと保持用バレルは、金属線の軸方向に上記実施形態とは逆に配置されていても良い。接点部から導通用バレルが延設される方向、及び導通用バレルから保持用バレルが延設される方向は、上記の実施形態ように直線的に連接される方向であってもよいし、かしめ加工の支障にならない範囲で、所定の角度（例えば９０度）だけ屈曲させる方向に延設してもよい。   Further, the conduction barrel and the holding barrel may be disposed in the axial direction of the metal wire in the opposite direction to the above embodiment. The direction in which the conducting barrel extends from the contact portion and the direction in which the holding barrel extends from the conducting barrel may be linearly connected or caulked as in the above embodiment. You may extend in the direction bent only a predetermined angle (for example, 90 degree | times) in the range which does not interfere with a process.

１０ 端子金具
１２ 金属線
１２ａ 導電部
１２ｂ 絶縁層
１４ 金属線接続部
１６ 接点部
１８ 導通用バレル
２０ 保持用バレル
２２ 第一底板部
２４ 第一かしめ片
２６ 第二底板部
２８ 第二かしめ片
３０ 凹凸部
３２ 第一端部
３２ａ 周面
３４ 第二端部
３２ａ 周面
DESCRIPTION OF SYMBOLS 10 Terminal metal fitting 12 Metal wire 12a Conductive part 12b Insulating layer 14 Metal wire connection part 16 Contact part 18 Conduction barrel 20 Holding barrel 22 First bottom plate part 24 First caulking piece 26 Second bottom plate part 28 Second caulking piece 30 Unevenness Part 32 First end 32a Perimeter 34 Second end 32a Perimeter

Claims (4)

金属線の一端が接続される金属線接続部と、外部配線との電気接点となる接点部とを備え、
前記金属線接続部は、
第一底板部、及び前記第一底板部から左右に延設された一対の第一かしめ片を有し、前記第一底板部及び前記一対の第一かしめ片に囲まれた内側に、前記金属線の終端部分である第一端部を配し、前記第一かしめ片の先端が前記第一端部の周面に食い込むようにかしめ加工され、前記金属線が導通状態で固定される導通用バレルと、
前記第一底板部の端部から延設された第二底板部、及び前記第二底板部から左右に延設され内側面に凹凸部が形成された一対の第二かしめ片を有し、前記第二底板部及び前記一対の第二かしめ片に囲まれた内側に、前記金属線の終端から内側に入った部分である第二端部を配し、前記第二かしめ片の前記凹凸部の先端が前記第二端部の周面に食い込むようにかしめ加工され、前記金属線が固定される保持用バレルとで構成されていることを特徴とする端子金具。 A metal wire connecting portion to which one end of the metal wire is connected, and a contact portion serving as an electrical contact with the external wiring;
The metal wire connecting portion is
A first bottom plate portion and a pair of first caulking pieces extending from the first bottom plate portion to the left and right; and the inner side surrounded by the first bottom plate portion and the pair of first caulking pieces, The first end portion which is a terminal end portion of the wire is disposed, and the tip of the first caulking piece is caulked so as to bite into the peripheral surface of the first end portion, and the metal wire is fixed in a conductive state. Barrel,
A second bottom plate portion extending from an end portion of the first bottom plate portion, and a pair of second caulking pieces extending from the second bottom plate portion to the left and right and having an uneven portion formed on an inner surface thereof, A second end portion that is a portion that enters the inside from the end of the metal wire is disposed on the inner side surrounded by the second bottom plate portion and the pair of second caulking pieces, and the concave and convex portions of the second caulking piece are arranged. A terminal fitting comprising: a holding barrel to which a leading end is caulked so as to bite into a peripheral surface of the second end portion and to which the metal wire is fixed. 前記第一底板部が、前記接点部の端部から延設されている請求項１記載の端子金具。   The terminal fitting according to claim 1, wherein the first bottom plate portion extends from an end portion of the contact portion. 前記金属線接続部には、導電部の周面が絶縁層で被覆された前記金属線が接続され、前記導通用バレルの前記第一かしめ片の先端が、前記第一端部の前記絶縁層を突き破り、前記導電部の周面に食い込むようにかしめ加工される請求項１記載の端子金具。   The metal wire connecting portion is connected to the metal wire whose peripheral surface of the conductive portion is covered with an insulating layer, and the tip of the first caulking piece of the conduction barrel is connected to the insulating layer of the first end portion. The terminal fitting according to claim 1, wherein the terminal fitting is squeezed so as to penetrate the peripheral surface of the conductive portion. 前記第二かしめ片の前記凹凸部は、平坦面に多数の窪みを形成することによって設けられている請求項１又は２記載の端子金具。
The terminal fitting according to claim 1 or 2, wherein the uneven portion of the second caulking piece is provided by forming a number of depressions on a flat surface.
JP2012125969A 2012-06-01 2012-06-01 Terminal metal fitting Pending JP2013251181A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017022110A (en) * 2015-07-10 2017-01-26 株式会社白山製作所 Crimp connection member, crimp connection structure, and serration member

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017022110A (en) * 2015-07-10 2017-01-26 株式会社白山製作所 Crimp connection member, crimp connection structure, and serration member

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