JP6933536B2

JP6933536B2 - Terminal with electric wire

Info

Publication number: JP6933536B2
Application number: JP2017183771A
Authority: JP
Inventors: 博規北川; 一栄高橋; 伊藤　直樹; 直樹伊藤
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2017-09-25
Filing date: 2017-09-25
Publication date: 2021-09-08
Anticipated expiration: 2037-09-25
Also published as: JP2019061785A

Description

本発明は、Ｕ字状の導体圧着部を備えた圧着端子に電線が接続された電線付端子に関するものである。 The present invention relates to a terminal with an electric wire in which an electric wire is connected to a crimp terminal provided with a U-shaped conductor crimping portion.

一般的な圧着端子は、その長手方向（電線の長手方向と一致）の一端側に、相手側端子に対して接続するための電気接続部を有し、他端側に、電線の端末部に対して加締め接続される電線接続部を有している。 A general crimp terminal has an electrical connection portion for connecting to the other side terminal on one end side in the longitudinal direction (corresponding to the longitudinal direction of the electric wire), and on the other end side, the terminal portion of the electric wire. On the other hand, it has an electric wire connection part to be crimped and connected.

ここで、圧着端子の長手方向を前後方向といい、相手側端子に接続するための電気接続部のある側を前側、電線接続部のある側を後側という。また、圧着端子の電線接続部に対して電線を載せる側を上方、その反対側を下方、上方を基準に前方に向かって左側および右側（端子の幅方向の一方側及び他方側）を端子の左側および端子の右側という。 Here, the longitudinal direction of the crimp terminal is referred to as the front-rear direction, the side having the electrical connection portion for connecting to the mating terminal is referred to as the front side, and the side having the electric wire connection portion is referred to as the rear side. Further, the side on which the electric wire is placed is upward with respect to the electric wire connection portion of the crimp terminal, the opposite side is downward, and the left side and the right side (one side and the other side in the width direction of the terminal) of the terminal are directed toward the front with reference to the upper side. It is called the left side and the right side of the terminal.

図６は、従来の一般的な圧着端子の電線接続部の斜視図である。
図６に示す圧着端子１０１の電線接続部１０５は、前側に導体圧着部１１０を配置し、その後側に間隔をおいて被覆加締部１２０を配置した構成となっている。 FIG. 6 is a perspective view of an electric wire connection portion of a conventional general crimp terminal.
The electric wire connecting portion 105 of the crimp terminal 101 shown in FIG. 6 has a configuration in which the conductor crimping portion 110 is arranged on the front side and the covering crimping portion 120 is arranged on the rear side at intervals.

前側の導体圧着部１１０は、底板部１１１と、底板部１１１の左右方向の両側縁から上方に延出した左右一対の板状の導体加締片１１２、１１３と、を有する断面視略Ｕ字状に形成されている。左右一対の導体加締片１１２、１１３は、接続すべき電線の端末部の絶縁被覆を除去して露出させた導体を包み込むように内側に曲げられることで、導体を底板部１１１の上面に密着した状態となるように加締めるものである。 The conductor crimping portion 110 on the front side has a bottom plate portion 111 and a pair of left and right plate-shaped conductor crimping pieces 112 and 113 extending upward from both left and right edges of the bottom plate portion 111 in the left-right direction. It is formed in a shape. The pair of left and right conductor crimping pieces 112 and 113 are bent inward so as to wrap the exposed conductor by removing the insulating coating on the end portion of the electric wire to be connected, so that the conductor adheres to the upper surface of the bottom plate portion 111. It is to be crimped so that it will be in the state of being tightened.

従来の圧着端子１０１では、導体圧着部１１０の左右の導体加締片１１２、１１３の先端縁１１２ａ、１１３ａが、前後方向に平行な直線状に形成されていた。 In the conventional crimp terminal 101, the tip edges 112a and 113a of the left and right conductor crimping pieces 112 and 113 of the conductor crimping portion 110 are formed in a straight line parallel to the front-rear direction.

この圧着端子１０１に電線の端末部を接続する場合には、下型（アンビル）の上に圧着端子１０１を載せて、圧着端子１０１の電線接続部１０５の内側に電線の端末部を挿入し、上型（クリンパ）を下型に対して相対的に下降させることで行う。 When connecting the terminal portion of the electric wire to the crimp terminal 101, the crimp terminal 101 is placed on the lower mold (anvil), and the terminal portion of the electric wire is inserted inside the electric wire connection portion 105 of the crimp terminal 101. This is done by lowering the upper mold (crimp) relative to the lower mold.

図７は、従来の圧着端子１０１の導体圧着部１１０を電線の端末部の導体Ｗａに対して加締めている状態を示す断面図である。 FIG. 7 is a cross-sectional view showing a state in which the conductor crimping portion 110 of the conventional crimping terminal 101 is crimped to the conductor Wa of the terminal portion of the electric wire.

導体圧着部１１０を電線の導体Ｗａに加締める場合は、まず、図７に示すように、下型（アンビル）Ｎの上に導体圧着部１１０の底板部１１１を載せて、導体圧着部１１０の内側に電線の端末部の導体Ｗａを挿入し、上型（クリンパ）Ｍを下型Ｎに対して相対的に下降させる。そうすると、上型Ｍの案内面Ｍａが左右一対の導体加締片１１２、１１３の先端縁１１２ａ、１１３ａに接触し、上型Ｍの案内面Ｍａの働きで、導体加締片１１２、１１３が徐々に内側に曲げられて行く。 When crimping the conductor crimping portion 110 to the conductor Wa of the electric wire, first, as shown in FIG. 7, the bottom plate portion 111 of the conductor crimping portion 110 is placed on the lower mold (anvil) N, and the conductor crimping portion 110 The conductor Wa at the end of the electric wire is inserted inside, and the upper mold (crimp) M is lowered relative to the lower mold N. Then, the guide surface Ma of the upper die M comes into contact with the tip edges 112a, 113a of the pair of left and right conductor crimping pieces 112, 113, and the conductor crimping pieces 112, 113 gradually move due to the action of the guide surface Ma of the upper die M. It is bent inward.

上型Ｍを続けて下降させると、左右の導体加締片１１２、１１３がさらに内側に曲げられて行き、導体加締片１１２、１１３の先端縁１１２ａ、１１３ａが、上型Ｍの案内面Ｍａの中央の山形湾曲面の働きで、導体Ｗａ側に折り返すように丸められて、導体Ｗａに食い込む。その結果、導体Ｗａを包むように導体加締片１１２、１１３が加締められて、導体Ｗａが底板部１１１の上面に密着した状態になる。 When the upper die M is continuously lowered, the left and right conductor crimping pieces 112 and 113 are further bent inward, and the tip edges 112a and 113a of the conductor crimping pieces 112 and 113 form the guide surface Ma of the upper die M. By the action of the chevron curved surface in the center of, it is rolled so as to be folded back toward the conductor Wa and bites into the conductor Wa. As a result, the conductor crimping pieces 112 and 113 are crimped so as to wrap the conductor Wa, and the conductor Wa is in close contact with the upper surface of the bottom plate portion 111.

このように導体加締片１１２、１１２が加締められることによって、圧着端子を構成する導電性金属と電線の導体とが凝着（分子や原子レベルで結合）することになる。その結果、圧着端子と電線とが電気的および機械的に強く結合されることになる。 By crimping the conductor crimping pieces 112 and 112 in this way, the conductive metal constituting the crimp terminal and the conductor of the electric wire are adhered (bonded at the molecular or atomic level). As a result, the crimp terminal and the electric wire are strongly electrically and mechanically coupled.

ところで、従来の圧着端子１０１の場合、上述した圧着工程の際に、図７中の符号Ｊで示す部分のように、左右の導体加締片１１２、１１３の先端縁１１２ａ、１１３ａが互いに干渉しながら導体Ｗａに食い込んで行く。また、導体加締片１１２、１１３の先端縁１１２ａ、１１３ａが直線状に形成されているので、図８中の符号Ｋで示す部分のように、先端縁１１２ａの全体がほぼ同時に導体Ｗａに線状に接触して食い込んで行く。そして、最終的には、図９（ａ）に示すように、導体加締片１１２、１１３の先端縁１１２ａ、１１３ａを導体Ｗａに食い込ませながら、良好な圧着性能が得られるＣ／Ｈまで上型Ｍを下降させて圧着工程を完了する。 By the way, in the case of the conventional crimp terminal 101, during the crimping process described above, the tip edges 112a and 113a of the left and right conductor crimping pieces 112 and 113 interfere with each other as shown by the reference numeral J in FIG. While digging into the conductor Wa. Further, since the tip edges 112a and 113a of the conductor crimping pieces 112 and 113 are formed in a straight line, the entire tip edge 112a is lined with the conductor Wa almost at the same time as shown by the reference numeral K in FIG. It touches the shape and bites into it. Finally, as shown in FIG. 9A, the tip edges 112a and 113a of the conductor crimping pieces 112 and 113 are made to bite into the conductor Wa, and the pressure is increased to C / H where good crimping performance can be obtained. The mold M is lowered to complete the crimping process.

しかし、従来の圧着端子１０１の場合、上述したように、圧着時に、導体加締片１１２、１１３の先端縁１１２ａ、１１３ａが、互いに干渉し合いながら、全体がほぼ同時に導体Ｗａに対して線状に接触して食い込んで行く。そのため、導体加締片１１２、１１３の先端縁１１２ａ、１１３ａの導体Ｗａへの食い込み量が左右でバラツキやすい。 However, in the case of the conventional crimp terminal 101, as described above, at the time of crimping, the tip edges 112a and 113a of the conductor crimping pieces 112 and 113 interfere with each other, and the whole is linear with respect to the conductor Wa at almost the same time. Contact and bite into. Therefore, the amount of bite into the conductor Wa of the tip edges 112a and 113a of the conductor crimping pieces 112 and 113 tends to vary from side to side.

図９（ａ）、（ｂ）は、左右の導体加締片１１２、１１３の食い込み量のバラツキを示す図で、（ａ）は一方の導体加締片１１３が他方の導体加締片１１２よりも食い込み量が大きい場合を示す断面図、（ｂ）は他方の導体加締片１１２が一方の導体加締片１１３よりも食い込み量が大きい場合を示す断面図である。 9 (a) and 9 (b) are views showing the variation in the biting amount of the left and right conductor crimping pieces 112 and 113, and FIG. 9A shows that one conductor crimping piece 113 is more than the other conductor crimping piece 112. The cross-sectional view shows the case where the bite amount is large, and (b) is the cross-sectional view showing the case where the other conductor crimping piece 112 has a larger bite amount than the one conductor crimping piece 113.

図９（ａ）、（ｂ）に示すように、左右の導体加締片１１２、１１３の先端縁１１２ａ、１１３ａが、直線状に形成されていて、導体Ｗａへの食い込みの際に互いに干渉するので、左右の導体加締片１１２、１１３の食い込み量にバラツキが出ることになる。しかも、１つの端子についてみると、前後方向のどの位置の断面でも同じような食い込みが生じることになる。このように食い込み量の左右バラツキが出ると、圧着性能に影響を与える可能性がある。 As shown in FIGS. 9A and 9B, the tip edges 112a and 113a of the left and right conductor crimping pieces 112 and 113 are formed in a straight line and interfere with each other when biting into the conductor Wa. Therefore, the biting amount of the left and right conductor crimping pieces 112 and 113 will vary. Moreover, when looking at one terminal, the same bite occurs at any position in the front-rear direction. If the amount of bite varies from side to side in this way, the crimping performance may be affected.

一方、特許文献１や特許文献２に、食い込みを大きくする目的などのために、導体加締片の先端縁に凹凸を設ける例が開示されている。しかし、左右の導体加締片の先端縁の同じ位置に凹凸があると、食い込み量を大きくする点では有効となり得るかもしれないが、凸部と凸部の干渉による左右のバラツキの問題は変わらずに残る可能性がある。 On the other hand, Patent Document 1 and Patent Document 2 disclose an example in which unevenness is provided on the tip edge of a conductor crimping piece for the purpose of increasing biting. However, if there is unevenness at the same position on the tip edge of the left and right conductor crimping pieces, it may be effective in increasing the amount of bite, but the problem of left and right variation due to interference between the convex parts changes. It may remain without.

特開２０１０−５５８７５号公報Japanese Unexamined Patent Publication No. 2010-55575 特開平６−１０４０２０号公報Japanese Unexamined Patent Publication No. 6-104020

本発明は、上述した事情に鑑みてなされたものであり、その目的は、左右の導体加締片の導体への食い込み量のバラツキを減らすことのできる圧着端子に電線が接続された電線付端子を提供することにある。 The present invention has been made in view of the above circumstances, and an object of the present invention is a terminal with an electric wire in which an electric wire is connected to a crimp terminal capable of reducing the variation in the amount of biting into the conductor of the left and right conductor crimping pieces. Is to provide.

前述した目的を達成するために、本発明に係る電線付端子は、下記（１）、（２）を特徴としている。
（１）
圧着端子に備わる断面Ｕ字状の導体圧着部に電線の端末部の露出した導体が圧着接続された電線付端子であって、
前記導体圧着部が、
上面に前記導体が載置される底板部と、
前記底板部の左右方向両側縁からそれぞれ上方に延出し、前記導体を包み込むように内側に曲げられることで、前記導体を前記底板部の上面に密着状態で加締める左右一対の板状の導体加締片と、
前記一対の導体加締片の前記導体の長手方向に沿った各先端縁に、該先端縁に沿って交互に設けられた凸部と凹部と、
を備え、
前記一対の導体加締片のうちの一方の前記導体加締片の先端縁に設けられた前記凸部と他方の前記導体加締片の先端縁に設けられた前記凹部とが互いに対向し、且つ、一方の前記導体加締片の先端縁に設けられた前記凹部と他方の前記導体加締片の先端縁に設けられた前記凸部とが互いに対向するように、前記左右の導体加締片における前記凸部と前記凹部の位置が前記導体の長手方向にずれており、
前記底板部の上面に前記電線の端末部の露出した導体が載置された状態で、前記一対の導体加締片が前記導体を包み込むように内側に曲げられることで、前記導体が前記底板部の上面に密着状態で加締められ、前記導体加締片の先端縁に設けられた前記凸部が前記導体に食い込み、
前記各導体加締片の少なくとも上半部の板面が、前記凸部の位置で内方から見て谷になり、前記凹部の位置で内方から見て山になるように、前後方向に沿って波形に屈曲形成されている、
ことを特徴とする電線付端子。
（２）圧着端子に備わる断面Ｕ字状の導体圧着部に電線の端末部の露出した導体が圧着接続された電線付端子であって、
前記導体圧着部が、
上面に前記導体が載置される底板部と、
前記底板部の左右方向両側縁からそれぞれ上方に延出し、前記導体を包み込むように内側に曲げられることで、前記導体を前記底板部の上面に密着状態で加締める左右一対の板状の導体加締片と、
前記一対の導体加締片の前記導体の長手方向に沿った各先端縁に、該先端縁に沿って交互に設けられた凸部と凹部と、
を備え、
前記一対の導体加締片のうちの一方の前記導体加締片の先端縁に設けられた前記凸部と他方の前記導体加締片の先端縁に設けられた前記凹部とが互いに対向し、且つ、一方の前記導体加締片の先端縁に設けられた前記凹部と他方の前記導体加締片の先端縁に設けられた前記凸部とが互いに対向するように、前記左右の導体加締片における前記凸部と前記凹部の位置が前記導体の長手方向にずれており、
前記底板部の上面に前記電線の端末部の露出した導体が載置された状態で、前記一対の導体加締片が前記導体を包み込むように内側に曲げられることで、前記導体が前記底板部の上面に密着状態で加締められ、前記導体加締片の先端縁に設けられた前記凸部が前記導体に食い込み、
前記凸部が先端の尖った三角形板状に形成され、
前記各導体加締片の少なくとも上半部の板面が、前記凸部の位置で内方から見て谷になり、前記凹部の位置で内方から見て山になるように、前後方向に沿って波形に屈曲形成されている、
ことを特徴とする電線付端子。 In order to achieve the above-mentioned object, the terminal with an electric wire according to the present invention is characterized by the following (1) and (2).
(1)
A conductor with a U-shaped cross section provided in the crimp terminal A terminal with an electric wire in which the exposed conductor of the terminal portion of the electric wire is crimp-connected to the crimp portion.
The conductor crimping part
The bottom plate on which the conductor is placed on the upper surface,
A pair of left and right plate-shaped conductors that extend upward from both left and right edges of the bottom plate and are bent inward so as to wrap the conductor so that the conductor is crimped to the upper surface of the bottom plate in close contact with the conductor. Shards and
On each tip edge of the pair of conductor crimping pieces along the longitudinal direction of the conductor, convex portions and concave portions alternately provided along the tip edge,
With
The convex portion provided on the tip edge of one of the conductor crimping pieces of the pair of conductor crimping pieces and the concave portion provided on the tip edge of the other conductor crimping piece face each other. The left and right conductors are crimped so that the concave portion provided on the tip edge of one of the conductor crimping pieces and the convex portion provided on the tip edge of the other conductor crimping piece face each other. The positions of the convex portion and the concave portion on the piece are displaced in the longitudinal direction of the conductor.
With the exposed conductor of the end portion of the electric wire placed on the upper surface of the bottom plate portion, the pair of conductor crimping pieces are bent inward so as to wrap the conductor, so that the conductor becomes the bottom plate portion. upper surface crimped in close contact of the protrusion provided on the leading edge of the conductor caulking pieces are seen write bite into the conductor,
The plate surface of at least the upper half of each conductor crimping piece becomes a valley when viewed from the inside at the position of the convex portion, and becomes a mountain when viewed from the inside at the position of the concave portion, in the front-rear direction. It is bent and formed along the waveform,
A terminal with an electric wire.
(2) A conductor with a U-shaped cross section provided in the crimp terminal A terminal with an electric wire in which the exposed conductor of the terminal portion of the electric wire is crimp-connected to the crimp portion.
The conductor crimping part
The bottom plate on which the conductor is placed on the upper surface,
A pair of left and right plate-shaped conductors that extend upward from both left and right edges of the bottom plate and are bent inward so as to wrap the conductor so that the conductor is crimped to the upper surface of the bottom plate in close contact with the conductor. Shards and
On each tip edge of the pair of conductor crimping pieces along the longitudinal direction of the conductor, convex portions and concave portions alternately provided along the tip edge,
With
The convex portion provided on the tip edge of one of the conductor crimping pieces of the pair of conductor crimping pieces and the concave portion provided on the tip edge of the other conductor crimping piece face each other. The left and right conductors are crimped so that the concave portion provided on the tip edge of one of the conductor crimping pieces and the convex portion provided on the tip edge of the other conductor crimping piece face each other. The positions of the convex portion and the concave portion on the piece are displaced in the longitudinal direction of the conductor.
With the exposed conductor of the end portion of the electric wire placed on the upper surface of the bottom plate portion, the pair of conductor crimping pieces are bent inward so as to wrap the conductor, so that the conductor becomes the bottom plate portion. It is crimped in close contact with the upper surface of the conductor, and the convex portion provided on the tip edge of the conductor crimping piece bites into the conductor.
The convex portion is formed in the shape of a triangular plate with a pointed tip.
The plate surface of at least the upper half of each conductor crimping piece becomes a valley when viewed from the inside at the position of the convex portion, and becomes a mountain when viewed from the inside at the position of the concave portion, in the front-rear direction. It is bent and formed along the waveform,
A terminal with an electric wire.

上記（１）の構成の電線付端子によれば、左右の導体加締片の先端縁に形成された凹部と凸部の位置が導体の長手方向にずれているので、圧着過程における左右の導体加締片の先端縁の凸部同士の干渉を防止することができる。また、導体加締片の先端縁が直線状ではなく凹凸状になっていることで、導体に対する食い込み量を安定して大きくすることができる。従って、例えば、左側の導体加締片の凸部と右側の導体加締片の凹部が対向している位置の断面で見た場合の導体加締片の食い込み量の偏りと、右側の導体加締片の凸部と左側の導体加締片の凹部が対向している位置の断面で見た場合の導体加締片の食い込み量の偏りとが、左右対称形状となり、全体としてみれば、バランスが取れることになり、食い込み量の左右のバラツキを減らすことができる。
上記（２）の構成の電線付端子によれば、凸部の位置では、導体加締片の少なくとも上半部の板面が内方から見て谷となるので、圧着工程の初期の段階において、凸部の位置での導体加締片の内面を導体の表面から離すことができる。また、凹部の位置では、導体加締片の少なくとも上半部の板面が内方から見て山となるので、圧着工程の初期の段階において、凹部の位置での導体加締片の内面を導体の表面に近づけることができる。従って、凸部の先端を、導体に対して遠い位置から導体に向けて丸めながら食い込ませて行くことができ、導体の表面に対して凸部の先端を突き立てた角度で食い込ませることができる。そのため食い込みやすくなり、左右のバラツキを減らすことができる。 According to the terminal with electric wire having the configuration of (1) above, the positions of the concave portion and the convex portion formed on the tip edges of the left and right conductor crimping pieces are deviated in the longitudinal direction of the conductor, so that the left and right conductors in the crimping process. It is possible to prevent the convex portions of the tip edge of the crimping piece from interfering with each other. Further, since the tip edge of the conductor crimping piece is not straight but uneven, the amount of biting into the conductor can be stably increased. Therefore, for example, when viewed in cross section at a position where the convex portion of the conductor crimping piece on the left side and the concave portion of the conductor crimping piece on the right side face each other, the deviation of the bite amount of the conductor crimping piece and the conductor addition on the right side. The unevenness of the bite amount of the conductor crimping piece when viewed in cross section at the position where the convex part of the crimping piece and the concave part of the conductor crimping piece on the left side face each other has a symmetrical shape, and is balanced as a whole. It is possible to reduce the variation in the amount of bite on the left and right.
According to the terminal with electric wire having the configuration of (2) above, at the position of the convex portion, the plate surface of at least the upper half of the conductor crimping piece becomes a valley when viewed from the inside, so that in the initial stage of the crimping process. , The inner surface of the conductor crimping piece at the position of the convex portion can be separated from the surface of the conductor. Further, at the position of the recess, the plate surface of at least the upper half of the conductor crimping piece becomes a mountain when viewed from the inside. Therefore, in the initial stage of the crimping process, the inner surface of the conductor crimping piece at the position of the recess is It can be brought closer to the surface of the conductor. Therefore, the tip of the convex portion can be made to bite into the conductor from a position far away from the conductor while being rolled toward the conductor, and the tip of the convex portion can be made to bite into the surface of the conductor at an angle of protrusion. .. Therefore, it becomes easier to bite and the left-right variation can be reduced.

本発明によれば、左右の導体加締片の導体への食い込み量のバラツキを減らすことができ、圧着性能の安定化を図ることができる。 According to the present invention, it is possible to reduce the variation in the amount of biting of the left and right conductor crimping pieces into the conductor, and it is possible to stabilize the crimping performance.

以上、本発明について簡潔に説明した。更に、以下に説明される発明を実施するための形態（以下、「実施形態」という。）を添付の図面を参照して通読することにより、本発明の詳細は更に明確化されるであろう。 The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments described below (hereinafter referred to as "embodiments") with reference to the accompanying drawings. ..

図１は、本発明の実施形態の圧着端子の斜視図である。FIG. 1 is a perspective view of a crimp terminal according to an embodiment of the present invention. 図２（ａ）〜（ｃ）は、本発明の実施形態の圧着端子の電線接続部の構成を示す図で、図２（ａ）は展開図、図２（ｂ）は斜視図、図２（ｃ）は上方から見た平面図である。2 (a) to 2 (c) are views showing the configuration of the electric wire connection portion of the crimp terminal according to the embodiment of the present invention, FIG. 2 (a) is a developed view, FIG. 2 (b) is a perspective view, and FIG. (C) is a plan view seen from above. 図３は、本発明の実施形態の圧着端子の導体加締片の凸部が導体に食い込み始める様子を模式的に示す斜視図である。FIG. 3 is a perspective view schematically showing how the convex portion of the conductor crimping piece of the crimp terminal according to the embodiment of the present invention begins to bite into the conductor. 図４は、本発明の実施形態の圧着端子の電線接続部の圧着後の状態を示す平面図である。FIG. 4 is a plan view showing a state after crimping of the electric wire connection portion of the crimp terminal according to the embodiment of the present invention. 図５（ａ）〜（ｃ）は、本発明の実施形態の圧着端子の圧着後の状態を示す断面図で、図５（ａ）は図４のＸ１−Ｘ１矢視断面図（図３の同矢視断面に相当）、図５（ｂ）は図４のＸ２−Ｘ２矢視断面図（図３の同矢視断面に相当）、図５（ｃ）は図４のＸ３矢印方向から見た断面図である。5 (a) to 5 (c) are cross-sectional views showing a state after crimping of the crimp terminal according to the embodiment of the present invention, and FIG. 5 (a) is a cross-sectional view taken along the line X1-X1 of FIG. 4 (FIG. 3). (Corresponding to the same arrow cross section), FIG. 5 (b) is a cross section taken from the X2-X2 arrow in FIG. 4 (corresponding to the same cross section in FIG. 3), and FIG. It is a cross-sectional view. 図６は、従来の一般的な圧着端子の電線接続部の斜視図である。FIG. 6 is a perspective view of an electric wire connection portion of a conventional general crimp terminal. 図７は、従来の圧着端子の導体圧着部を電線の端末部の導体に加締めている状態を示す断面図である。FIG. 7 is a cross-sectional view showing a state in which the conductor crimping portion of the conventional crimping terminal is crimped to the conductor of the terminal portion of the electric wire. 図８は、従来の圧着端子の導体加締片を加締めている時の導体加締片の先端縁の導体への食い込み方を説明するための斜視図である。FIG. 8 is a perspective view for explaining how to bite the tip edge of the conductor crimping piece into the conductor when the conductor crimping piece of the conventional crimp terminal is crimped. 図９（ａ）、（ｂ）は、従来の圧着端子の導体圧着部の圧着状態のバラツキを示す断面図で、図９（ａ）は一方の導体加締片の食い込み量が大きくなった状態を示す断面図、図９（ｂ）は他方の導体加締片の食い込み量が大きくなった状態を示す断面図である。9 (a) and 9 (b) are cross-sectional views showing variations in the crimping state of the conductor crimping portion of the conventional crimp terminal, and FIG. 9 (a) shows a state in which the bite amount of one of the conductor crimping pieces is large. 9 (b) is a cross-sectional view showing a state in which the biting amount of the other conductor crimping piece is increased.

本発明に関する具体的な実施形態について、各図を参照しながら以下に説明する。
図１は、実施形態の圧着端子の斜視図である。
図１に示す圧着端子１は、所定形状に打ち抜いた金属板体に曲げ加工を施すことによって形成されている。
この圧着端子１は、その長手方向（電線Ｗの長手方向と一致）の一端側に、相手側端子に対して接続するための電気接続部２を有し、他端側に、電線Ｗの端末部に対して加締め接続される電線接続部５を有している。 Specific embodiments of the present invention will be described below with reference to the respective figures.
FIG. 1 is a perspective view of a crimp terminal of the embodiment.
The crimp terminal 1 shown in FIG. 1 is formed by bending a metal plate body punched into a predetermined shape.
The crimp terminal 1 has an electrical connection portion 2 for connecting to a terminal on the other side on one end side in the longitudinal direction (corresponding to the longitudinal direction of the electric wire W), and the terminal of the electric wire W on the other end side. It has an electric wire connecting portion 5 that is crimped and connected to the portion.

ここで、圧着端子１の長手方向を前後方向といい、相手側端子に接続するための電気接続部２のある側を前側、電線接続部５のある側を後側という。また、圧着端子１の電線接続部５に対して電線Ｗを載せる側を上方、その反対側を下方、上方を基準に前方に向かって左側および右側（端子の幅方向の一方側及び他方側）を端子の左側および端子の右側という。 Here, the longitudinal direction of the crimp terminal 1 is referred to as the front-rear direction, the side with the electrical connection portion 2 for connecting to the mating terminal is referred to as the front side, and the side with the electric wire connection portion 5 is referred to as the rear side. Further, the side on which the electric wire W is placed is upward with respect to the electric wire connection portion 5 of the crimp terminal 1, the opposite side is downward, and the left side and the right side (one side and the other side in the width direction of the terminal) are forward with reference to the upper side. Is called the left side of the terminal and the right side of the terminal.

図１に示すように、圧着端子１の電線接続部５は、前側に導体圧着部１０を配置し、その後側に間隔をおいて被覆加締部２０を配置した構成となっている。 As shown in FIG. 1, the electric wire connecting portion 5 of the crimp terminal 1 has a configuration in which a conductor crimping portion 10 is arranged on the front side and a covering crimping portion 20 is arranged on the rear side at intervals.

圧着接続する電線Ｗは、例えば、金属細線を撚り合わせた撚線からなる導体Ｗａと、導体Ｗａを包囲する絶縁被覆Ｗｂと、を備えた被覆電線である。電線Ｗの先端部においては、圧着端子１との接続準備として、予め、絶縁被覆Ｗｂが除去されることにより、導体Ｗａが露出した状態となっている。導体Ｗａの材料としては、銅や、銅以外の金属（例えば、アルミニウムやアルミニウム合金など）が用いられる。 The electric wire W to be crimp-connected is, for example, a coated electric wire including a conductor Wa made of a stranded wire obtained by twisting thin metal wires and an insulating coating Wb surrounding the conductor Wa. At the tip of the electric wire W, the conductor Wa is exposed by removing the insulating coating Wb in advance in preparation for connection with the crimp terminal 1. As the material of the conductor Wa, copper or a metal other than copper (for example, aluminum or an aluminum alloy) is used.

電線接続部５の前側に位置する導体圧着部１０は、導体Ｗａが載置される底板部１１と、該底板部１１の左右方向（底板部１１の幅方向ともいう）の両側縁から上方に延出した左右一対の導体加締片１２、１３と、を有する断面視略Ｕ字状に形成されている。一対の導体加締片１２、１３は、接続すべき電線Ｗの端末部の絶縁被覆Ｗｂを除去して露出させた導体Ｗａを包み込むように内側に曲げられることで、導体Ｗａを底板部１１の上面に密着した状態となるように加締めるものである。 The conductor crimping portion 10 located on the front side of the electric wire connecting portion 5 is upward from the bottom plate portion 11 on which the conductor Wa is placed and both side edges of the bottom plate portion 11 in the left-right direction (also referred to as the width direction of the bottom plate portion 11). It is formed in a substantially U-shape in cross section having a pair of left and right conductor crimping pieces 12 and 13 extending. The pair of conductor crimping pieces 12 and 13 are bent inward so as to wrap the exposed conductor Wa by removing the insulating coating Wb at the end of the electric wire W to be connected, so that the conductor Wa is formed on the bottom plate portion 11. It is crimped so that it is in close contact with the upper surface.

また、後側の被覆加締部２０も、底板部２１と、該底板部２１の左右方向の両側縁から上方に延出した左右一対の被覆加締片２２、２３と、を有する断面視略Ｕ字状に形成されている。左右一対の被覆加締片２２、２３は、接続すべき電線Ｗの端末部の絶縁被覆Ｗｂの付いた部分を包み込むように内側に曲げられることで、電線Ｗの端末部の絶縁被覆Ｗｂ部分を底板部２１の上面に密着した状態となるように加締めるものである。導体圧着部１０の底板部１１および被覆加締部２０の底板部２１は、前方の電気接続部２の底板部３と共通の底板部として連続して形成されている。 Further, the covering crimping portion 20 on the rear side also has a bottom plate portion 21 and a pair of left and right covering crimping pieces 22 and 23 extending upward from both left and right edges of the bottom plate portion 21 in the left-right direction. It is formed in a U shape. The pair of left and right covering crimping pieces 22 and 23 are bent inward so as to wrap the portion of the terminal portion of the electric wire W to be connected with the insulating coating Wb, thereby forming the insulating coating Wb portion of the terminal portion of the electric wire W. It is crimped so as to be in close contact with the upper surface of the bottom plate portion 21. The bottom plate portion 11 of the conductor crimping portion 10 and the bottom plate portion 21 of the covering crimping portion 20 are continuously formed as a bottom plate portion common to the bottom plate portion 3 of the front electrical connection portion 2.

図２（ａ）〜（ｃ）は、実施形態の圧着端子の電線接続部の構成を示す図で、図２（ａ）は展開図、図２（ｂ）は斜視図、図２（ｃ）は上方から見た平面図である。 2 (a) to 2 (c) are views showing the configuration of the electric wire connection portion of the crimp terminal of the embodiment, FIG. 2 (a) is a developed view, FIG. 2 (b) is a perspective view, and FIG. 2 (c). Is a plan view seen from above.

図１および図２（ａ）〜（ｃ）に示すように、導体圧着部１０の底板部１１の左右両側縁から上方に延出する左右一対の板状の導体加締片１２、１３の先端縁１２ａ、１３ａは、前後方向（接続すべき導体Ｗａの長手方向）に沿って延在している。これら各先端縁１２ａ、１３ａには、凸部１５と凹部１６が先端縁１２ａ、１３ａに沿って交互に配置されている。 As shown in FIGS. 1 and 2 (a) to 2 (c), the tips of a pair of left and right plate-shaped conductor crimping pieces 12 and 13 extending upward from the left and right side edges of the bottom plate portion 11 of the conductor crimping portion 10. The edges 12a and 13a extend along the front-rear direction (longitudinal direction of the conductor Wa to be connected). On each of these tip edges 12a and 13a, convex portions 15 and recesses 16 are alternately arranged along the tip edges 12a and 13a.

ここで重要なことは、図２（ａ）に示すように、左右の導体加締片１２、１３のうちの右側の導体加締片１２の先端縁１２ａに設けられた凸部１５と、左側の導体加締片１３の先端縁１３ａに設けられた凹部１６とが互いに対向している。また、右側の導体加締片１２の先端縁１２ａに設けられた凹部１６と左側の導体加締片１３の先端縁１３ａに設けられた凸部１５とが互いに対向している。そのように、右側と左側の導体加締片１２、１３における凸部１５と凹部１６の位置が、前後方向（導体Ｗａの長手方向）にずれていることである。 What is important here is that, as shown in FIG. 2A, the convex portion 15 provided on the tip edge 12a of the right conductor crimping piece 12 of the left and right conductor crimping pieces 12 and 13 and the left side. The recesses 16 provided in the tip edge 13a of the conductor crimping piece 13 of the above are opposed to each other. Further, the concave portion 16 provided on the tip edge 12a of the conductor crimping piece 12 on the right side and the convex portion 15 provided on the tip edge 13a of the conductor crimping piece 13 on the left side face each other. As described above, the positions of the convex portion 15 and the concave portion 16 on the right and left conductor crimping pieces 12 and 13 are deviated in the front-rear direction (longitudinal direction of the conductor Wa).

また、各凸部１５は、先端の尖った三角形板状に形成されている。同様に、各凹部１６は、相手側の凸部１５に対応した三角形状に形成されている。そして、図２（ｂ）、（ｃ）に示すように、導体圧着部１０が断面Ｕ字状に曲げ加工された際に、左右の各導体加締片１２、１３の少なくとも上半部の板面が、凸部１５の位置で内方から見て谷（Ｔ）になり、凹部１６の位置で内方から見て山（Ｙ）になるように、前後方向に沿って波形に屈曲形成されている。ここで内方とは、断面Ｕ字状に曲げ加工された導体圧着部１０の内側のことであり、電線の導体Ｗａが挿入される側である。 Further, each convex portion 15 is formed in the shape of a triangular plate with a sharp tip. Similarly, each recess 16 is formed in a triangular shape corresponding to the convex portion 15 on the mating side. Then, as shown in FIGS. 2 (b) and 2 (c), when the conductor crimping portion 10 is bent into a U-shaped cross section, at least the upper half plates of the left and right conductor crimping pieces 12 and 13 are formed. The surface is bent and formed in a wavy shape along the front-rear direction so that the surface becomes a valley (T) when viewed from the inside at the position of the convex portion 15 and a peak (Y) when viewed from the inside at the position of the concave portion 16. ing. Here, the inside is the inside of the conductor crimping portion 10 bent into a U-shaped cross section, and is the side on which the conductor Wa of the electric wire is inserted.

この場合、谷（Ｔ）の深さと山（Ｙ）の高さは、底板部１１に近い位置から先端縁１２ａ、１３ａに向けて徐々に大きくなるように設定されている。図２（ｃ）の上から見た平面図において、△で示す位置が凸部１５の位置、○で示す位置が凹部１６の位置である。△で示す凸部１５の位置で板面が外側に突き出しており（内方から見て谷（Ｔ）となっており）、○で示す凹部１６の位置で板面が内側に突き出している（内方から見て山となっている）。 In this case, the depth of the valley (T) and the height of the peak (Y) are set so as to gradually increase from a position close to the bottom plate portion 11 toward the tip edges 12a and 13a. In the plan view seen from above in FIG. 2C, the position indicated by Δ is the position of the convex portion 15, and the position indicated by ◯ is the position of the concave portion 16. The plate surface protrudes outward at the position of the convex portion 15 indicated by Δ (it is a valley (T) when viewed from the inside), and the plate surface protrudes inward at the position of the concave portion 16 indicated by ○ (the plate surface protrudes inward). It is a mountain when viewed from the inside).

次に、この圧着端子１に電線Ｗの端末部を圧着接続する手順を説明する。この説明の中に、圧着端子１に電線Ｗの端末部を接続して構成した電線付端子も含まれる。 Next, a procedure for crimping and connecting the terminal portion of the electric wire W to the crimp terminal 1 will be described. This description also includes a terminal with an electric wire formed by connecting the terminal portion of the electric wire W to the crimp terminal 1.

この圧着端子１に電線Ｗの端末部を接続する場合には、図７に示す従来例と同様に、下型（アンビル）Ｎの上に圧着端子１を載せて、圧着端子１の電線接続部５の内側に電線Ｗの端末部を挿入し、上型（クリンパ）を下型に対して相対的に下降させることで行う。上型Ｍを下型Ｎに対して相対的に下降させると、上型Ｍの案内面Ｍａが左右一対の導体加締片１２、１３の先端縁１２ａ、１３ａに接触し、上型Ｍの案内面Ｍａの働きで、導体加締片１２、１３が徐々に内側に曲げられて行く。 When connecting the terminal portion of the electric wire W to the crimp terminal 1, the crimp terminal 1 is placed on the lower mold (anvil) N as in the conventional example shown in FIG. 7, and the electric wire connection portion of the crimp terminal 1 is connected. This is done by inserting the terminal portion of the electric wire W inside 5 and lowering the upper mold (crimp) relative to the lower mold. When the upper die M is lowered relative to the lower die N, the guide surface Ma of the upper die M comes into contact with the tip edges 12a, 13a of the pair of left and right conductor crimping pieces 12, 13 to guide the upper die M. The conductor crimping pieces 12 and 13 are gradually bent inward by the action of the surface Ma.

上型Ｍを続けて下降させると、左右の導体加締片１２、１３がさらに内側に徐々に曲げられて行き、導体加締片１２、１３の先端縁１２ａ、１３ａが、上型Ｍの案内面Ｍａの中央の山形湾曲面の働きで、導体Ｗａ側に折り返すように丸められて、導体Ｗａに食い込み始める。 When the upper die M is continuously lowered, the left and right conductor crimping pieces 12 and 13 are gradually bent inward, and the tip edges 12a and 13a of the conductor crimping pieces 12 and 13 guide the upper die M. By the action of the chevron curved surface in the center of the surface Ma, it is rolled so as to be folded back toward the conductor Wa, and begins to bite into the conductor Wa.

その際、左右の導体加締片１２、１３の先端縁１２ａ、１３ａに凸部１５と凹部１６が形成されていること、しかも、凸部１５と凹部１６の位置が左右で導体Ｗａの長手方向にずれていることにより、次のように導体Ｗａに対する食い込みが進行する。 At that time, the convex portion 15 and the concave portion 16 are formed on the tip edges 12a and 13a of the left and right conductor crimping pieces 12 and 13, and the positions of the convex portion 15 and the concave portion 16 are left and right in the longitudinal direction of the conductor Wa. Due to the deviation to, the bite into the conductor Wa proceeds as follows.

すなわち、まず、凸部１５と凹部１６の位置が左右の導体加締片１２、１３でずれていることにより、左右の導体加締片１２、１３の先端縁１２ａ、１３ａの凸部１５同士の干渉が防止される。次に、導体加締片１２、１３の先端縁１２ａ、１３ａが直線状ではなく凹凸状になっていることにより、導体Ｗａに対する食い込みが安定して大きくなる。この２つのことにより、全体的に見た場合の左右の食い込み量のバラツキが抑制される。その点をさらに次の図を参照しながら詳しく述べる。 That is, first, the positions of the convex portion 15 and the concave portion 16 are deviated between the left and right conductor crimping pieces 12 and 13, so that the convex portions 15 of the tip edges 12a and 13a of the left and right conductor crimping pieces 12 and 13 are aligned with each other. Interference is prevented. Next, since the tip edges 12a and 13a of the conductor crimping pieces 12 and 13 are not linear but uneven, the bite into the conductor Wa is stably increased. By these two things, the variation of the amount of bite on the left and right when viewed as a whole is suppressed. This point will be described in more detail with reference to the following figure.

図３は、実施形態の圧着端子１の導体加締片１２（１３）の凸部１５が導体Ｗａに食い込み始める様子を模式的に示す斜視図である。図４は、実施形態の圧着端子１の電線接続部５の圧着後の状態を示す平面図である。 FIG. 3 is a perspective view schematically showing how the convex portion 15 of the conductor crimping piece 12 (13) of the crimp terminal 1 of the embodiment starts to bite into the conductor Wa. FIG. 4 is a plan view showing a state after crimping of the electric wire connecting portion 5 of the crimping terminal 1 of the embodiment.

図３に示すように、圧着工程の進行により、左右の導体加締片１２（１３）が徐々に内側に丸められて行く。やがて、左右の導体加締片１２（１３）の先端縁１２ａ（１３ａ）が導体Ｗａに対して食い込み始める。そのとき、まず、三角形板状の凸部１５の尖った先端が、図中符号Ｇで示す部分のように、導体Ｗａの表面に接触して食い込んで行くことになる。 As shown in FIG. 3, as the crimping process progresses, the left and right conductor crimping pieces 12 (13) are gradually rolled inward. Eventually, the tip edges 12a (13a) of the left and right conductor crimping pieces 12 (13) begin to bite into the conductor Wa. At that time, first, the sharp tip of the triangular plate-shaped convex portion 15 comes into contact with the surface of the conductor Wa and bites into it, as shown by the reference numeral G in the drawing.

その食い込み始めの段階において、凸部１５の位置では、導体加締片１２（１３）の板面が、内方から見て谷となっているので、凸部１５の位置での導体加締片１２（１３）の内面は、導体Ｗａの表面から離れている。また、凹部１６の位置では、導体加締片１２（１３）の板面が、内方から見て山となっているので、凹部１６の位置での導体加締片１２（１３）の内面は導体Ｗａの表面に近づいている。従って、図３に示すように、凸部１５の先端を導体Ｗａに対して遠い位置から導体Ｗａに向けて丸めながら食い込ませて行くことができる。つまり、導体Ｗａの表面に対して凸部１５の先端を突き立てた角度で食い込ませることができる。そのため、食い込ませやすくなる。 At the stage of the start of biting, at the position of the convex portion 15, the plate surface of the conductor crimping piece 12 (13) is a valley when viewed from the inside, so that the conductor crimping piece at the position of the convex portion 15 The inner surface of 12 (13) is separated from the surface of the conductor Wa. Further, at the position of the recess 16, the plate surface of the conductor crimping piece 12 (13) is a mountain when viewed from the inside, so that the inner surface of the conductor crimping piece 12 (13) at the position of the recess 16 is a mountain. It is approaching the surface of the conductor Wa. Therefore, as shown in FIG. 3, the tip of the convex portion 15 can be made to bite into the conductor Wa from a position far from the conductor Wa while being rounded toward the conductor Wa. That is, the tip of the convex portion 15 can be made to bite into the surface of the conductor Wa at an angle of protrusion. Therefore, it becomes easy to bite.

食い込ませた後は、そのまま良好な圧着性能が得られるＣ／Ｈまで上型Ｍを下降させて圧着工程を完了する。その結果、導体Ｗａを包むように導体加締片１２、１３が加締められて、導体Ｗａが底板部１１の上面に密着した状態になる。外観的には、図４に示すような圧着済みの導体圧着部１０が出来上がる。この段階で、電線付端子が完成する。 After biting, the upper die M is lowered to C / H where good crimping performance can be obtained as it is, and the crimping process is completed. As a result, the conductor crimping pieces 12 and 13 are crimped so as to wrap the conductor Wa, and the conductor Wa is in close contact with the upper surface of the bottom plate portion 11. Appearance, the crimped conductor crimped portion 10 as shown in FIG. 4 is completed. At this stage, the terminal with electric wire is completed.

図５（ａ）〜（ｃ）は、実施形態の圧着端子１の導体圧着部１０の圧着後の状態を示す断面図で、図５（ａ）は図４のＸ１−Ｘ１矢視断面図（図３の同矢視断面に相当）、図５（ｂ）は図４のＸ２−Ｘ２矢視断面図（図３の同矢視断面に相当）、図５（ｃ）は図４のＸ３矢印方向から見た断面図である。 5 (a) to 5 (c) are cross-sectional views showing a state after crimping the conductor crimping portion 10 of the crimp terminal 1 of the embodiment, and FIG. 5 (a) is a cross-sectional view taken along the line X1-X1 of FIG. FIG. 3 (b) is a cross-sectional view taken along the line X2-X2 (corresponding to a cross-section taken along the same arrow in FIG. 3), FIG. It is a cross-sectional view seen from a direction.

図５（ａ）〜（ｃ）に示すように、圧着済みの導体圧着部１０においては、底板部１１の上面に電線Ｗの端末部の露出した導体Ｗａが載置され、一対の導体加締片１２、１３が導体Ｗａを包み込むように内側に曲げられることで、導体Ｗａが底板部１１の上面に密着状態で加締められている。そして、導体加締片１２、１３の先端縁１２ａ、１３ａに設けられた凸部１５が導体Ｗａに食い込んでいる。 As shown in FIGS. 5A to 5C, in the crimped conductor crimping portion 10, the exposed conductor Wa of the end portion of the electric wire W is placed on the upper surface of the bottom plate portion 11, and a pair of conductors are crimped. By bending the pieces 12 and 13 inward so as to wrap the conductor Wa, the conductor Wa is crimped to the upper surface of the bottom plate portion 11 in a close contact state. Then, the convex portions 15 provided on the tip edges 12a and 13a of the conductor crimping pieces 12 and 13 bite into the conductor Wa.

この場合、例えば、左側の導体加締片１３の凸部１５と右側の導体加締片１２の凹部１６が対向している位置の断面（Ｘ１−Ｘ１矢視断面）で見た場合は、図５（ａ）に示すように、左側の凸部１５が大きく食い込んだ状態になる。また、左側の導体加締片１３の凹部１６と右側の導体加締片１２の凸部１５が対向している位置の断面（Ｘ２−Ｘ２矢視断面）で見た場合は、図５（ｂ）に示すように、右側の凸部１５が大きく食い込んだ状態になる。 In this case, for example, when viewed in a cross section (X1-X1 arrow cross section) at a position where the convex portion 15 of the conductor crimping piece 13 on the left side and the concave portion 16 of the conductor crimping piece 12 on the right side face each other, FIG. As shown in 5 (a), the convex portion 15 on the left side is in a state of being greatly bitten. Further, when viewed in a cross section (X2-X2 arrow cross section) at a position where the concave portion 16 of the conductor crimping piece 13 on the left side and the convex portion 15 of the conductor crimping piece 12 on the right side face each other, FIG. ), The convex portion 15 on the right side is in a state of being greatly bitten.

このように、断面の位置によって、導体加締片１２、１３の食い込みの仕方に左右の偏りが生じる。しかし、図５（ａ）の断面の位置での食い込みの条件と、図５（ｂ）の断面の位置での食い込みの条件は同じであり、両方の食い込み量Ｄは、左右の偏りの違いこそあれ同じになる。つまり、図５（ａ）の断面の位置での食い込み量の偏りと図５（ｂ）の断面の位置での食い込み量の偏りは、左右対称形状となり、全体としてみれば、図５（ｃ）に示すように、左右の偏りを均すことができる。従って、左右でバランスが取れることになって、食い込み量の左右のバラツキを減らすことができる。その結果、安定した圧着性能が得られることになる。 As described above, depending on the position of the cross section, the way of biting the conductor crimping pieces 12 and 13 is biased to the left and right. However, the condition of biting at the position of the cross section of FIG. 5 (a) and the condition of biting at the position of the cross section of FIG. 5 (b) are the same. That will be the same. That is, the bias of the bite amount at the position of the cross section of FIG. 5 (a) and the bias of the bite amount at the position of the cross section of FIG. 5 (b) have a symmetrical shape. As shown in, the left-right bias can be evened out. Therefore, the left and right sides are balanced, and the variation in the amount of bite between the left and right sides can be reduced. As a result, stable crimping performance can be obtained.

このように導体加締片１２、１３が加締められることによって、圧着端子を構成する導電性金属と電線の導体とが凝着（分子や原子レベルで結合）することになる。その結果、圧着端子と電線とが電気的および機械的に強く結合されることになる。 By crimping the conductor crimping pieces 12 and 13 in this way, the conductive metal constituting the crimp terminal and the conductor of the electric wire are adhered (bonded at the molecular or atomic level). As a result, the crimp terminal and the electric wire are strongly electrically and mechanically coupled.

なお、本発明は、上述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。その他、上述した実施形態における各構成要素の材質、形状、寸法、数、配置箇所、等は本発明を達成できるものであれば任意であり、限定されない。 The present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, and the like. In addition, the material, shape, dimensions, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

ここで、上述した本発明に係る圧着端子および電線付端子の実施形態の特徴をそれぞれ以下［１］、［２］に簡潔に纏めて列記する。
［１］
圧着端子（１）に備わる断面Ｕ字状の導体圧着部（１０）に電線（Ｗ）の端末部の露出した導体（Ｗａ）が圧着接続された電線付端子であって、
前記導体圧着部（１０）が、
上面に前記導体（Ｗａ）が載置される底板部（１１）と、
前記底板部（１１）の左右方向両側縁からそれぞれ上方に延出し、前記導体（Ｗａ）を包み込むように内側に曲げられることで、前記導体（Ｗａ）を前記底板部（１１）の上面に密着状態で加締める左右一対の板状の導体加締片（１２、１３）と、
前記一対の導体加締片（１２、１３）の前記導体（Ｗａ）の長手方向に沿った各先端縁（１２ａ、１３ａ）に、該先端縁（１２ａ、１３ａ）に沿って交互に設けられた凸部（１５）と凹部（１６）と、
を備え、
前記一対の導体加締片（１２、１３）のうちの一方の前記導体加締片（１２）の先端縁（１２ａ）に設けられた前記凸部（１５）と他方の前記導体加締片（１３）の先端縁（１３ａ）に設けられた前記凹部（１６）とが互いに対向し、且つ、一方の前記導体加締片（１２）の先端縁（１２ａ）に設けられた前記凹部（１６）と他方の前記導体加締片（１３）の先端縁（１３ａ）に設けられた前記凸部（１５）とが互いに対向するように、前記左右の導体加締片（１２、１３）における前記凸部（１５）と前記凹部（１６）の位置が前記導体（Ｗａ）の長手方向にずれており、
前記底板部（１１）の上面に前記電線（Ｗ）の端末部の露出した導体（Ｗａ）が載置された状態で、前記一対の導体加締片（１２、１３）が前記導体（Ｗａ）を包み込むように内側に曲げられることで、前記導体（Ｗａ）が前記底板部（１１）の上面に密着状態で加締められ、前記導体加締片（１２、１３）の先端縁（１２ａ、１３ａ）に設けられた前記凸部（１５）が前記導体（Ｗａ）に食い込んでいる、
ことを特徴とする電線付端子。
［２］
上記［１］に記載の電線付端子であって、
前記凸部（１５）が先端の尖った三角形板状に形成され、
前記各導体加締片（１２、１３）の少なくとも上半部の板面が、前記凸部（１５）の位置で内方から見て谷（Ｔ）になり、前記凹部（１６）の位置で内方から見て山（Ｙ）になるように、前後方向に沿って波形に屈曲形成されている、
ことを特徴とする電線付端子。 Here, the features of the above-described embodiments of the crimp terminal and the terminal with electric wire according to the present invention are briefly summarized and listed below in [1] and [2], respectively.
[1]
A conductor with a U-shaped cross section provided in the crimp terminal (1) A terminal with an electric wire in which the exposed conductor (Wa) of the terminal portion of the electric wire (W) is crimp-connected to the crimp portion (10).
The conductor crimping portion (10)
A bottom plate portion (11) on which the conductor (Wa) is placed on the upper surface, and
The conductor (Wa) is brought into close contact with the upper surface of the bottom plate portion (11) by extending upward from both left and right edges of the bottom plate portion (11) and being bent inward so as to wrap the conductor (Wa). A pair of left and right plate-shaped conductor crimping pieces (12, 13) to be crimped in the state,
The tip edges (12a, 13a) of the pair of conductor crimping pieces (12, 13) along the longitudinal direction of the conductor (Wa) are alternately provided along the tip edges (12a, 13a). Convex part (15) and concave part (16),
With
The convex portion (15) provided on the tip edge (12a) of one of the pair of conductor crimping pieces (12, 13) and the other conductor crimping piece (12a). The recess (16) provided on the tip edge (13a) of 13) faces the recess (16) and is provided on the tip edge (12a) of one of the conductor crimping pieces (12). The convex portion of the left and right conductor crimping pieces (12, 13) so that the convex portion (15) provided on the tip edge (13a) of the other conductor crimping piece (13) faces each other. The positions of the portion (15) and the recess (16) are displaced in the longitudinal direction of the conductor (Wa).
The pair of conductor crimping pieces (12, 13) are the conductor (Wa) in a state where the exposed conductor (Wa) of the terminal portion of the electric wire (W) is placed on the upper surface of the bottom plate portion (11). The conductor (Wa) is crimped in close contact with the upper surface of the bottom plate portion (11) by being bent inward so as to wrap around the conductor crimping pieces (12, 13). ), The convex portion (15) bites into the conductor (Wa).
A terminal with an electric wire.
[2]
The terminal with an electric wire according to the above [1].
The convex portion (15) is formed in the shape of a triangular plate with a sharp tip.
The plate surface of at least the upper half of each of the conductor crimping pieces (12, 13) becomes a valley (T) when viewed from the inside at the position of the convex portion (15), and at the position of the concave portion (16). It is bent and formed in a wavy shape along the front-back direction so that it becomes a mountain (Y) when viewed from the inside.
A terminal with an electric wire.

１圧着端子
１０導体圧着部
１１底板部
１２右側の導体加締片
１２ａ先端縁
１３左側の導体加締片
１３ａ先端縁
１５凸部
１６凹部
Ｗ電線
Ｗａ導体
Ｔ谷
Ｙ山 1 Crimping terminal 10 Conductor crimping part 11 Bottom plate part 12 Right conductor crimping piece 12a Tip edge 13 Left conductor crimping piece 13a Tip edge 15 Convex part 16 Recessed W Electric wire Wa Conductor T valley Y mountain

Claims

A conductor with a U-shaped cross section provided in the crimp terminal A terminal with an electric wire in which the exposed conductor of the terminal portion of the electric wire is crimp-connected to the crimp portion.
The conductor crimping part
The bottom plate on which the conductor is placed on the upper surface,
A pair of left and right plate-shaped conductors that extend upward from both left and right edges of the bottom plate and are bent inward so as to wrap the conductor so that the conductor is crimped to the upper surface of the bottom plate in close contact with the conductor. Shards and
On each tip edge of the pair of conductor crimping pieces along the longitudinal direction of the conductor, convex portions and concave portions alternately provided along the tip edge,
With
The convex portion provided on the tip edge of one of the conductor crimping pieces of the pair of conductor crimping pieces and the concave portion provided on the tip edge of the other conductor crimping piece face each other. The left and right conductors are crimped so that the concave portion provided on the tip edge of one of the conductor crimping pieces and the convex portion provided on the tip edge of the other conductor crimping piece face each other. The positions of the convex portion and the concave portion on the piece are displaced in the longitudinal direction of the conductor.
With the exposed conductor of the end portion of the electric wire placed on the upper surface of the bottom plate portion, the pair of conductor crimping pieces are bent inward so as to wrap the conductor, so that the conductor becomes the bottom plate portion. upper surface crimped in close contact of the protrusion provided on the leading edge of the conductor caulking pieces are seen write bite into the conductor,
The plate surface of at least the upper half of each conductor crimping piece becomes a valley when viewed from the inside at the position of the convex portion, and becomes a mountain when viewed from the inside at the position of the concave portion, in the front-rear direction. It is bent and formed along the waveform,
A terminal with an electric wire.

A conductor with a U-shaped cross section provided in the crimp terminal A terminal with an electric wire in which the exposed conductor of the terminal portion of the electric wire is crimp-connected to the crimp portion.
The conductor crimping part
The bottom plate on which the conductor is placed on the upper surface,
A pair of left and right plate-shaped conductors that extend upward from both left and right edges of the bottom plate and are bent inward so as to wrap the conductor so that the conductor is crimped to the upper surface of the bottom plate in close contact with the conductor. Shards and
On each tip edge of the pair of conductor crimping pieces along the longitudinal direction of the conductor, convex portions and concave portions alternately provided along the tip edge,
With
The convex portion provided on the tip edge of one of the conductor crimping pieces of the pair of conductor crimping pieces and the concave portion provided on the tip edge of the other conductor crimping piece face each other. The left and right conductors are crimped so that the concave portion provided on the tip edge of one of the conductor crimping pieces and the convex portion provided on the tip edge of the other conductor crimping piece face each other. The positions of the convex portion and the concave portion on the piece are displaced in the longitudinal direction of the conductor.
With the exposed conductor of the end portion of the electric wire placed on the upper surface of the bottom plate portion, the pair of conductor crimping pieces are bent inward so as to wrap the conductor, so that the conductor becomes the bottom plate portion. It is crimped in close contact with the upper surface of the conductor, and the convex portion provided on the tip edge of the conductor crimping piece bites into the conductor.
The convex portion is formed in the shape of a triangular plate with a pointed tip.
The plate surface of at least the upper half of each conductor crimping piece becomes a valley when viewed from the inside at the position of the convex portion, and becomes a mountain when viewed from the inside at the position of the concave portion, in the front-rear direction. It is bent and formed along the waveform,
A terminal with an electric wire.