JP2004235003A

JP2004235003A - Crimp terminal and connection structure of crimp terminal and wire

Info

Publication number: JP2004235003A
Application number: JP2003021748A
Authority: JP
Inventors: Hideki Matsunaga; 英樹松永; Katsuji Suzuura; 克二鈴浦; Yoshio Kamimura; 嘉男神村
Original assignee: Sumitomo Wiring Systems Ltd; Toyota Motor Corp
Current assignee: Sumitomo Wiring Systems Ltd; Toyota Motor Corp
Priority date: 2003-01-30
Filing date: 2003-01-30
Publication date: 2004-08-19
Anticipated expiration: 2023-01-30
Also published as: JP4054265B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection structure without tensile force and bending stress loaded on a core wire when crimping a thick wire to the middle position of a terminal. <P>SOLUTION: The crimp terminal made of a conductive metal plate is formed by arranging a first insulation coating barrel 13 at one end of a base plate part 11; a core wire barrel 12 located with a necessary distance 16 from the first insulation coating barrel 13 crimped to a core wire 100a exposed with an insulation coating 100b of an electric cable 100 peeled; and a second insulation coating barrel 14 with a necessary distance 17 from the core wire barrel 12. Those insulation coating barrels 13, 14 and the core wire barrel 12 are made to protrude from both sides in a direction of a width of the base plate part 11 in a spreading direction. The base plate part 11 is further extended from the second insulation coating barrel 14, and a bolt hole 20a is formed on the extended part 18. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、電線に接続する端子に関し、特に、自動車用ワイヤハーネスを構成する太物電線の中間部でアース接続できるようにするものである。
【０００２】
従来より電線と接続する圧着端子として、導電性金属板を端子形状に打ち抜き加工した後、芯線バレルと絶縁被覆バレルとを屈曲加工した圧着端子が提供されている。
図８（Ａ）に示すように、圧着端子をアース用端子１とする場合は、基板部１ａの一端に絶縁被覆バレル１ｂを設け、該絶縁被覆バレル１ｂと所要間隔をあけて芯線バレル１ｃを設け、該芯線バレル１ｃを設けた位置の基板部より直線状に延在させて円形状としたアース接続部１ｄにボルト穴１ｅを設けた形状とされている（特許文献１）。
【０００３】
上記アース用端子１に対して、電線ｗの先端を皮剥して芯線ｗａを露出させ、該芯線ｗａに芯線バレル１ｃを圧着すると共に、芯線露出部に近接する絶縁被覆ｗｂを絶縁被覆バレル１ｂに圧着している。このようにアース用端子１を接続した電線ｗは自動車に配索するとき、図８（Ｂ）に示すように、ボルト穴１ｅを車体パネルＰに穿設しているボルト穴Ｐｈと一致させ、ボルトＢをボルト穴１ｅ、Ｐｈに通し、車体パネルＰに予め溶接しているナットＮに締結して、電線ｗを車体アースしている。
【０００４】
【特許文献１】
特開平９−９２３６０号公報
【０００５】
【発明が解決しようとする課題】
上記のように、通常、アース用端子は電線端末に接続されるが、電線の中間部でアース接続する際は、電線の中間部の絶縁被覆を皮剥ぎして芯線を露出させてアース用端子と圧着接続することとなる。
この場合、芯線バレルの一方側の絶縁被覆は絶縁被覆バレルと圧着されるが、他方側の絶縁被覆は絶縁被覆バレルと圧着されず、芯線バレルとの圧着部より外れた芯線の一部が露出されたままとなる。よって、電線に引張力が負荷されると、露出した芯線にも引張され、特に、電線が１５ｓｑ以上の太物電線であると、該太物電線に負荷される引張力も大きなものとなり、芯線に損傷が生じる恐れがある。
【０００６】
更に、中間位置でアース用端子と圧着した電線を、絶縁被覆バレルと圧着していない側で屈曲させる場合、曲げ応力が露出した芯線に負荷され、芯線に損傷が生じやすい問題がある。特に、上記太物電線の場合には、曲げ応力も大きなものとなるため、より芯線に損傷が生じやすくなる。
【０００７】
本発明は上記問題に鑑みてなされたもので、特に、太物電線を中間位置で端子に圧着する場合に、芯線への引張力、曲げ応力が負荷しないようにすることを課題としている。
【０００８】
【課題を解決するための手段】
本発明は、上記課題を解決するため、第１に、導電性金属板からなり、電線の絶縁被覆を皮剥ぎして露出させた芯線に圧着する芯線バレルを挟んで、その両側に絶縁被覆バレルを設けていることを特徴とする圧着端子を提供している。
【０００９】
上記のように、従来は芯線バレルの一側方にのみ設けられていた絶縁被覆バレルを芯線バレルの両側に設けると、露出させた芯線の両側の絶縁被覆が絶縁被覆バレルに圧着され、電線に負荷される引張力は両側の絶縁被覆バレルで強く圧着された部位で受け止められ、芯線への伝わる引張力を遮断、低減でき、芯線の保護を図ることができる。
【００１０】
具体的には、上記圧着端子は、基板部の一端に第１の上記絶縁被覆バレルを設け、該絶縁被覆バレルと所要間隔をあけて上記芯線バレルを設け、該芯線バレルと所要間隔をあけて第２の上記絶縁被覆バレルを設け、これら第１、第２の絶縁被覆バレルおよび上記芯線バレルは上記基板部の幅方向両側より互いに開き方向に突出させ、かつ、上記第２の絶縁被覆バレルより基板部を延在させ、該延在部にボルト穴を設けてアース用圧着端子としている。
【００１１】
上記アース用圧着端子とした場合、ボルト穴を設けた延在部が車体パネル等のアース接続部にボルト固定される際、電線に引っ張り力が加わる場合があるが、電線引っ張り側の絶縁被覆を上記第２の絶縁被覆バレルで電線を圧着しているため、芯線への引張力の伝達を遮断、低減できる。
【００１２】
上記アース圧着端子の基板部の延在部は、上記芯線バレルおよび絶縁被覆バレルを設けた基板部に対して同一水平面上で側方に屈曲させ、該屈曲部に上記ボルト穴を設けている。
電線の中間部でアース接続するため、該アース接続位置の真上に電線は配線すると、アース接続作業がやりにくくなるため、ボルト穴を設けた延在部は芯線バレル及び絶縁被覆バレルを設けた基板より屈曲させ、アース用圧着端子を圧着した電線と離れた位置とすることが好ましい。
【００１３】
あるいは、上記基板部の延在部は、上記芯線バレルおよび絶縁被覆バレルを設けた基板部に対して同一水平面上で側方に屈曲させた後に、該屈曲部を更に下向きあるいは上向きの垂直方向に屈曲させ、該垂直方向の屈曲部に上記ボルト穴を設けている。
アース用圧着端子をアース接続する車体パネル等のアース接続材の構造に応じて、側方に屈曲させた後に更に垂直方向に屈曲させて、該垂直方向の位置でアース接続している。このように、芯線バレルおよび絶縁被覆バレルとの圧着部に対して、アース接続部がひねった位置にある場合には、ボルト固定時に電線に引張力と曲げ負荷の両方が作用するため、上記のように芯線の両側を絶縁被覆バレルで圧着しておくと、芯線への上記負荷を遮断、軽減することが出来る。
【００１４】
上記アース用圧着端子の屈曲部の基板部に補強ビードを設け、あるいは／および屈曲部の少なくとも内周縁に沿って補強リブを突設している。
上記のようにアース用圧着端子に屈曲部を設けると、特に、アース用圧着端子と接続する電線が太物電線である場合には、電線の引張力が大きくなるため、アース用端子への負荷も大きくなり、ボルト固定部との間で捩れや破損が発生しやすくなる。そのため、上記補強ビードや補強リブを設けてアース用圧着端子自体の強度を高めている。
【００１５】
第２に、本発明は、上記したアース用圧着端子を用いて太物電線に接続しており、該太物電線の中間部を皮剥ぎして芯線を露出させ、該芯線に上記芯線バレルを圧着して電気接続すると共に、上記芯線両側の絶縁被覆に上記第１、第２の絶縁被覆バレルを圧着し、該第２の絶縁被覆バレルに圧着された上記太物電線を上記延在部より離反する側方に屈曲させ、該太物電線より離れた位置となる上記延在部で上記太物電線の中間部をアース接続する構成としている端子と電線の接続構造を提供している。
【００１６】
上記のように、太物電線の中間位置にアース用圧着端子を接続し、該接続位置から太物電線を屈曲させる場合には、圧着部に大きな曲げ応力が負荷されるため、芯線バレルの両側の第１、第２の絶縁被覆バレルを設けて、芯線露出部の両側の絶縁被覆を上記第１、第２の絶縁被覆バレルで圧着しておくと、曲げ応力を露出した芯線に伝わるのを効果的に遮断、低減することができる。
【００１７】
なお、上記アース用端子に限らず、芯線バレルの両側に第１、第２の絶縁被覆バレルを設けただけで延在部を設けていない中間接続用の端子として用いてもよい。即ち、１本の電線を中間皮剥ぎして芯線を露出させると共に、他の電線の端末を皮剥して芯線を露出させ、電線端末の芯線を中間皮剥ぎした１本の電線の芯線に重ねわせて中間スプライスする際、重ね合わせた芯線を芯線バレルで圧着し、それぞれの電線を第１と第２の絶縁被覆バレルでそれぞれ圧着してもよい。
さらに、芯線バレルの両側に第１、第２の絶縁被覆バレルを設け、第２の絶縁被覆バレルより延在させた基板部に他の電線と接続する雌端子あるいは雄端子、さらには圧接刃を設けた圧接部を設けてもよい。
【００１８】
【発明の実施の形態】
本発明の実施形態を図面を参照して説明する。
図１乃至図５は第１実施形態を示す。
本実施形態の圧着端子は一枚板の導電性金属板を打抜加工したアース用圧着端子１０であって、基板部１１の一端で幅方向の両側より立設された第１絶縁被覆バレル１３と、第１絶縁被覆バレル１３と所要間隔をあけて幅方向の両側より立設された芯線バレル１２と、芯線バレル１２と所要間隔をあけて幅方向の両側より立設された第２絶縁被覆バレル１４と、第２絶縁被覆バレル１４より基板部１１を延在させた延在部１８とを備えている。延在部１８は芯線バレル１２および第１・第２絶縁被覆バレル１３、１４を設けた基板部１１に対して同一水平面上で側方に屈曲させた水平屈曲部１９を設けると共に、屈曲部１９を更に下向きの垂直方向に屈曲させた垂直屈曲部２０を連続し、垂直屈曲部２０にボルト穴２０ａを穿設している。
【００１９】
芯線バレル１２は、その内面に幅方向に切り欠かれた複数の溝部１５を備え、芯線１００ａと点接触で確実な導通を図ることできるようにしていると共に、図３（Ａ）に示すように真上に突出され、図２に示す端子長手方向の長さＬ１を１２〜１６ｍｍとしている。
第１絶縁被覆バレル１３および第２絶縁被覆バレル１４は、図３（Ｂ）（Ｃ）に示すように逆ハの字状の開き方向に突出され、図２に示す端子長手方向の長さＬ２を３〜８ｍｍとしている。
また、芯線バレル１２と第１・第２絶縁バレル１３、１４の間の隙間１６、１７の端子長手方向の長さＬ３は、３〜８ｍｍとしている。
水平屈曲部１９には、基板部１１を上面側に膨出させた補強ビード２１を設けていると共に、水平屈曲部１９の内周縁に沿って補強リブ２２を突設している。
【００２０】
次に、図５を用いて上記アース用圧着端子１０の使用状況を説明する。
アース用圧着端子１０に接続される太物電線１００は、その中間部の絶縁被覆１００ｂを皮剥ぎして芯線１００ａを露出させている。ここで、芯線１００ａの露出部分の長手方向の長さは、芯線バレル１２の長さＬ１より若干長くしている。
そして、上記太物電線１００をアース用圧着端子１０の基板部１１上に配置し、芯線１００ａが芯線バレル１２に位置する状態で、芯線バレル１２で芯線１００ａをカシメると共に、第１・第２絶縁被覆バレル１３、１４を芯線１００ａの両側の絶縁被覆１００ｂにカシメている。
【００２１】
この状態のアース用圧着端子１０を車体パネルＰの角部Ｐａに延在部１８の水平屈曲部１９と垂直屈曲部２０とが沿うようにして配置し、アース用圧着端子１０のボルト穴２０ａと車体パネルＰのボルト穴（図示せず）とにボルトＢで締結して、太物電線１００の芯線１００ａを車体パネルＰにアース接続している。ここで、太物電線１００の第２絶縁被覆バレル１４側より導出される部位は、延在部１８より離反する側方に屈曲するよう屈曲部Ａを設けている。
【００２２】
上記構成のアース用圧着端子１０によれば、芯線バレル１２の両側に第１・第２絶縁被覆バレル１３、１４を設け、露出させた芯線１００ａの両側の絶縁被覆１００ｂが第１・第２絶縁被覆バレル１３、１４に圧着され、電線１００に負荷される引張力は両側の絶縁被覆バレル１３、１４で受け止めて芯線１００ａへの伝わる引張力を遮断、低減でき、芯線１００ａの保護を図ることができる。
また、芯線バレル１２および第１・第２絶縁被覆バレル１３、１４との圧着部に対して、アース接続部であるボルトＢ締結部分がひねった位置にある場合には、ボルトＢ固定時に電線１００に引張力と曲げ負荷の両方が作用するため、上記のように芯線１００ａの両側を第１・第２絶縁被覆バレル１３、１４で圧着しておくと、芯線１００ａへの負荷を遮断、軽減することが出来る。
【００２３】
さらに、アース用圧着端子１０の水平屈曲部１９には補強ビード２１や補強リブ２２を設けてアース用圧着端子１０の強度を高めているので、太物電線１００の引張力などによるアース用圧着端子１０の水平屈曲部１９での捩れや破損を防止することができる。
また、太物電線１００の中間位置にアース用圧着端子１０を接続して太物電線１００を屈曲させる場合には大きな曲げ応力が負荷されるが、電線１００の屈曲部Ａと芯線バレル１２との間に第２絶縁被覆バレル１４を設けているので、該曲げ応力が露出した芯線１００ａに伝わるのを効果的に遮断、低減することができる。特に、電線１００の屈曲部Ａが芯線１００ａ露出部分の近接位置に設けられて芯線１００ａへの応力伝達が大きくなる場合には、従来はなかった第２絶縁被覆バレル１４を設けることで芯線１００ａへの応力伝達を効果的に遮断することが可能となる。
なお、第２絶縁被覆バレル１４より延在させた基板部１１に他の電線と接続する雌端子あるいは雄端子、さらには圧接刃を設けた圧接部を設けても構わない。
【００２４】
図６は第２実施形態を示す。
第１実施形態との相違点は、延在部１８’に垂直方向に屈曲された垂直屈曲部を設けてない点である。
即ち、アース用圧着端子３０の第２絶縁被覆バレル１４より基板部１１を延在させた延在部１８’には、芯線バレル１２および第１・第２絶縁被覆バレル１３、１４を設けた基板部１１’に対して同一水平面上で側方に屈曲させた水平屈曲部１９を設け、水平屈曲部１９の先端側にボルト穴１９ａ’を穿設している。
上記構成とすると、太物電線１００の中間部でアース接続する際に、太物電線１００の真下にボルトＢ締結位置がこないので、アース接続作業がやり易くなる。
なお、他の構成は第１実施形態と同様であるため同一符号を付して説明を省略する
【００２５】
図７（Ａ）（Ｂ）は第３実施形態を示す。
第１実施形態との相違点は、アース用の圧着端子ではなく、延在部の無い中間スプライス用の圧着端子４０としている点である。
【００２６】
圧着端子４０は、一枚板の導電性金属板を打抜加工したものであって、基板部１１”の一端で幅方向の両側より立設された第１絶縁被覆バレル１３と、基板部１１”の他端で幅方向の両側より立設された第２絶縁被覆バレル１４と、第１絶縁被覆バレル１３と第２絶縁被覆バレル１４との間で所要の隙間１６、１７をあけて幅方向の両側より立設された芯線バレル１２とを備え、芯線バレル１２の内面には幅方向に切り欠かれた複数の溝部１５が設けられている。
なお、第１実施形態と同一符号の各種長さ、形状等は、第１実施形態と同様であるため説明を省略する。
【００２７】
次に、図７（Ｂ）を用いて中間スプライス用の圧着端子４０の使用状況を説明する。
圧着端子４０には３本の電線１００、１０１、１０２がスプライス接続され、１本の電線１００は、その中間部の絶縁被覆１００ｂを皮剥ぎして芯線１００ａを露出させている一方、２本の電線１０１、１０２は端末を皮剥ぎして芯線１０１ａ、１０２ａを露出させている。
そして、各電線１００、１０１、１０２の芯線１００ａ、１０１ａ、１０２ａを重ね合わせて圧着端子４０の芯線バレル１２に位置する状態で、芯線バレル１２で芯線１００ａ、１０１ａ、１０２ａをカシメると共に、第１・第２絶縁被覆バレル１３、１４で絶縁被覆１００ｂ、１０１ｂ、１０２ｂをカシメている。
【００２８】
【発明の効果】
以上の説明より明らかなように、本発明の上記圧着端子によれば、上記芯線バレルの両側に上記第１絶縁被覆バレルおよび第２絶縁被覆バレルが、露出された芯線の両側の絶縁被覆に圧着され、電線に負荷される引張力を両側の第１・第２絶縁被覆バレルで受け止めて芯線への伝わる引張力を遮断、低減するので、芯線の保護を図ることができる。
特に、電線の中間位置に圧着端子を接続して電線を屈曲させる場合には大きな曲げ応力が負荷されるが、電線の屈曲部と芯線バレルとの間に第１絶縁被覆バレルあるいは第２絶縁被覆バレルのいずれか一方が介在するので、該曲げ応力が露出した芯線に伝わるのを効果的に遮断、低減することができる。
【図面の簡単な説明】
【図１】本発明の第１実施形態のアース用圧着端子（圧着端子）の斜視図である。
【図２】アース用圧着端子の側面図である。
【図３】（Ａ）は図２のＡ−Ａ線断面図、（Ｂ）はＢ−Ｂ線断面図、（Ｃ）はＣ−Ｃ線断面図である。
【図４】アース用圧着端子の背面図である。
【図５】アース用圧着端子の使用状態を示す斜視図である。
【図６】第２実施形態のアース用圧着端子の斜視図である。
【図７】（Ａ）は第３実施形態の圧着端子の斜視図、（Ｂ）は圧着端子を用いたスプライス接続を示す図面である。
【図８】（Ａ）（Ｂ）は従来例を示す図面である。
【符号の説明】
１０、３０アース用圧着端子（圧着端子）
１１基板部
１２芯線バレル
１３第１絶縁被覆バレル
１４第２絶縁被覆バレル
１５溝部
１６、１７隙間
１８延在部
１９水平屈曲部
２０垂直屈曲部
２０ａボルト穴
２１補強ビード
２２補強リブ
４０圧着端子
１００電線
１００ａ芯線
１００ｂ絶縁被覆
Ｂボルト
Ｐ車体パネル[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a terminal connected to an electric wire, and in particular, enables ground connection at an intermediate portion of a thick wire constituting an automobile wire harness.
[0002]
2. Description of the Related Art Conventionally, as a crimping terminal connected to an electric wire, a crimping terminal obtained by punching a conductive metal plate into a terminal shape and then bending a core wire barrel and an insulating coating barrel is provided.
As shown in FIG. 8A, in the case where the crimp terminal is the ground terminal 1, an insulating coating barrel 1b is provided at one end of the substrate portion 1a, and the core barrel 1c is separated from the insulating coating barrel 1b by a required distance. It is made into the shape which provided the bolt hole 1e in the earth | grounding connection part 1d which was extended and linearly extended from the board | substrate part of the position which provided this core wire barrel 1c, and was circular shape (patent document 1).
[0003]
The end of the electric wire w is peeled off from the ground terminal 1 to expose the core wire wa, the core wire barrel 1c is crimped to the core wire wa, and the insulating coating wb close to the core wire exposed portion is applied to the insulating coating barrel 1b. Crimped. When the electric wire w to which the grounding terminal 1 is connected in this way is routed to the automobile, the bolt hole 1e is made to coincide with the bolt hole Ph formed in the vehicle body panel P as shown in FIG. The bolt B is passed through the bolt holes 1e and Ph and fastened to a nut N that is welded to the vehicle body panel P in advance, and the electric wire w is grounded.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-92360
[Problems to be solved by the invention]
As described above, the grounding terminal is normally connected to the end of the electric wire. However, when connecting to the ground at the middle part of the electric wire, the insulation coating on the middle part of the electric wire is peeled off to expose the core wire and the grounding terminal. And crimping connection.
In this case, the insulation coating on one side of the core wire barrel is crimped to the insulation coating barrel, but the insulation coating on the other side is not crimped to the insulation coating barrel, and a part of the core wire that is detached from the crimping portion with the core wire barrel is exposed. Will remain. Therefore, when a tensile force is applied to the electric wire, the exposed core wire is also pulled. In particular, if the electric wire is a thick electric wire of 15 sq or more, the tensile force applied to the thick electric wire becomes large, Damage may occur.
[0006]
Further, when the electric wire crimped to the ground terminal at an intermediate position is bent on the side not crimped to the insulation coating barrel, there is a problem that bending stress is applied to the exposed core wire and the core wire is easily damaged. In particular, in the case of the above thick wire, the bending stress is also large, so that the core wire is more easily damaged.
[0007]
The present invention has been made in view of the above problems, and in particular, when a thick electric wire is crimped to a terminal at an intermediate position, it is an object to prevent a tensile force or bending stress from being applied to the core wire.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention firstly consists of a conductive metal plate, and a core wire barrel that is crimped to a core wire exposed by peeling off the insulation coating of an electric wire is sandwiched, and an insulation coating barrel is provided on both sides thereof. A crimp terminal is provided.
[0009]
As described above, when the insulation coating barrels that are conventionally provided only on one side of the core wire barrel are provided on both sides of the core wire barrel, the insulation coating on both sides of the exposed core wire is crimped to the insulation coating barrel, and The applied tensile force is received at the parts strongly pressed by the insulating coating barrels on both sides, and the tensile force transmitted to the core wire can be cut off and reduced, and the core wire can be protected.
[0010]
Specifically, the crimp terminal is provided with the first insulating coating barrel at one end of the substrate portion, the core wire barrel is provided at a required interval from the insulating coating barrel, and the required interval from the core wire barrel is provided. The second insulating coating barrel is provided, and the first and second insulating coating barrels and the core wire barrel project in the opening direction from both sides of the substrate portion in the width direction, and from the second insulating coating barrel. The substrate portion is extended, and a bolt hole is provided in the extended portion to form a grounding crimp terminal.
[0011]
In the case of the above-mentioned grounding crimp terminal, when the extension part provided with the bolt hole is bolted to the ground connection part such as the vehicle body panel, a tensile force may be applied to the electric wire. Since the electric wire is crimped by the second insulation coating barrel, transmission of the tensile force to the core wire can be cut off and reduced.
[0012]
The extending portion of the substrate portion of the ground crimp terminal is bent laterally on the same horizontal plane with respect to the substrate portion provided with the core barrel and the insulation coating barrel, and the bolt hole is provided in the bent portion.
In order to connect to the ground at the middle part of the wire, if the wire is wired directly above the ground connection position, it becomes difficult to perform the ground connection work. Therefore, the extension portion provided with the bolt holes is provided with a core wire barrel and an insulation coating barrel. It is preferable to be bent from the substrate and away from the crimped electric wire.
[0013]
Alternatively, the extending portion of the substrate portion is bent sideways on the same horizontal plane with respect to the substrate portion provided with the core wire barrel and the insulating coating barrel, and then the bent portion is further directed downward or upward in the vertical direction. The bolt hole is provided at the bent portion in the vertical direction.
In accordance with the structure of the ground connection member such as a vehicle body panel for grounding the crimp terminal for grounding, the ground terminal is bent sideways and further bent in the vertical direction to be grounded at the vertical position. As described above, when the ground connection portion is in a twisted position with respect to the crimping portion between the core wire barrel and the insulation coating barrel, both the tensile force and the bending load act on the electric wire when the bolt is fixed. Thus, if both sides of a core wire are crimped | bonded with an insulation coating barrel, the said load to a core wire can be interrupted | blocked and reduced.
[0014]
A reinforcing bead is provided on the substrate portion of the bent portion of the ground crimp terminal, or / and a reinforcing rib is provided along at least the inner peripheral edge of the bent portion.
When a bent portion is provided in the grounding crimp terminal as described above, the tensile force of the wire increases particularly when the wire connected to the grounding crimping terminal is a thick wire, so the load on the grounding terminal And the twist and breakage between the bolt fixing portion and the bolt fixing portion are likely to occur. Therefore, the reinforcing beads and reinforcing ribs are provided to increase the strength of the grounding crimp terminal itself.
[0015]
Secondly, the present invention is connected to a thick electric wire using the above-described grounding crimp terminal, and peels off the middle portion of the thick electric wire to expose the core wire, and the core wire barrel is attached to the core wire. The first and second insulation coating barrels are crimped to the insulation coatings on both sides of the core wire, and the thick electric wires crimped to the second insulation coating barrels are connected to the extension portions through the extension portions. Provided is a terminal-to-wire connection structure in which the intermediate portion of the thick wire is connected to the ground at the extended portion which is bent to the side away from the thick wire and located away from the thick wire.
[0016]
As described above, when a grounding crimp terminal is connected to the middle position of the thick wire and the thick wire is bent from the connection position, a large bending stress is applied to the crimping portion. If the first and second insulation coating barrels are provided and the insulation coatings on both sides of the core wire exposed portion are crimped by the first and second insulation coating barrels, the bending stress is transmitted to the exposed core wire. It can be effectively cut off and reduced.
[0017]
Not only the ground terminal but also the first and second insulation coating barrels provided on both sides of the core barrel may be used as an intermediate connection terminal without an extension. That is, one wire is peeled off to expose the core wire, the other wire end is peeled off to expose the core wire, and the wire end of the wire end is overlapped with the intermediate wire peeled off on the one wire core wire. When intermediate splicing is performed, the superposed core wires may be crimped by a core wire barrel, and the respective electric wires may be crimped by the first and second insulation coating barrels.
Further, first and second insulation coating barrels are provided on both sides of the core wire barrel, and a female terminal or a male terminal connected to another electric wire is connected to the substrate portion extended from the second insulation coating barrel, and further, a press contact blade is provided. You may provide the provided press-contact part.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
1 to 5 show a first embodiment.
The crimp terminal of the present embodiment is a ground crimp terminal 10 obtained by punching a single conductive metal plate, and a first insulating coating barrel 13 erected from both ends in the width direction at one end of the substrate portion 11. And a core wire barrel 12 erected from both sides in the width direction with a predetermined interval from the first insulation coating barrel 13, and a second insulation coating erected from both sides in the width direction with a necessary interval from the core wire barrel 12. A barrel 14 and an extending portion 18 in which the substrate portion 11 extends from the second insulating coating barrel 14 are provided. The extending portion 18 is provided with a horizontal bent portion 19 bent sideways on the same horizontal plane with respect to the substrate portion 11 provided with the core wire barrel 12 and the first and second insulating coating barrels 13 and 14, and the bent portion 19. The vertical bent portion 20 is further bent in the downward vertical direction, and a bolt hole 20a is formed in the vertical bent portion 20.
[0019]
The core wire barrel 12 is provided with a plurality of grooves 15 cut out in the width direction on the inner surface thereof so that reliable conduction can be achieved by point contact with the core wire 100a, as shown in FIG. The length L1 of the terminal longitudinal direction shown in FIG. 2 is 12-16 mm.
The first insulating coating barrel 13 and the second insulating coating barrel 14 protrude in the reverse C-shaped opening direction as shown in FIGS. 3B and 3C, and have a length L2 in the terminal longitudinal direction shown in FIG. 3 to 8 mm.
The length L3 in the terminal longitudinal direction of the gaps 16 and 17 between the core wire barrel 12 and the first and second insulating barrels 13 and 14 is 3 to 8 mm.
The horizontal bent portion 19 is provided with a reinforcing bead 21 that bulges the substrate portion 11 on the upper surface side, and a reinforcing rib 22 is provided along the inner peripheral edge of the horizontal bent portion 19.
[0020]
Next, the use situation of the said crimp terminal 10 for earth | grounds is demonstrated using FIG.
The thick wire 100 connected to the grounding crimping terminal 10 has the intermediate coating 100b peeled off to expose the core wire 100a. Here, the length of the exposed portion of the core wire 100a in the longitudinal direction is slightly longer than the length L1 of the core wire barrel 12.
Then, the thick wire 100 is disposed on the substrate portion 11 of the grounding crimping terminal 10, and the core wire 100 a is caulked with the core wire barrel 12 in a state where the core wire 100 a is positioned on the core wire barrel 12. The insulation coating barrels 13 and 14 are crimped to the insulation coating 100b on both sides of the core wire 100a.
[0021]
The grounding crimping terminal 10 in this state is arranged so that the horizontal bending part 19 and the vertical bending part 20 of the extending part 18 extend along the corner part Pa of the vehicle body panel P, and the bolt hole 20a of the grounding crimping terminal 10 and The core wire 100a of the thick wire 100 is grounded to the vehicle body panel P by fastening with bolts B to bolt holes (not shown) of the vehicle body panel P. Here, the portion led out from the second insulation coating barrel 14 side of the thick wire 100 is provided with a bent portion A so as to bend to the side away from the extending portion 18.
[0022]
According to the grounding crimp terminal 10 having the above-described configuration, the first and second insulation coating barrels 13 and 14 are provided on both sides of the core wire barrel 12, and the exposed insulation coatings 100b on both sides of the exposed core wire 100a are the first and second insulations. The tensile force that is crimped to the covering barrels 13 and 14 and applied to the electric wire 100 can be received by the insulating covering barrels 13 and 14 on both sides to cut off or reduce the tensile force transmitted to the core wire 100a, thereby protecting the core wire 100a. it can.
Further, when the bolt B fastening portion as the ground connection portion is in a twisted position with respect to the crimping portion between the core wire barrel 12 and the first and second insulation coating barrels 13 and 14, the electric wire 100 is fixed when the bolt B is fixed. Since both the tensile force and the bending load act on the core, if both sides of the core wire 100a are pressure-bonded with the first and second insulation coating barrels 13 and 14 as described above, the load on the core wire 100a is cut off and reduced. I can do it.
[0023]
Furthermore, since the strength of the grounding crimp terminal 10 is increased by providing the reinforcing bead 21 and the reinforcing rib 22 at the horizontal bent portion 19 of the grounding crimping terminal 10, the grounding crimping terminal due to the tensile force of the thick wire 100 is used. It is possible to prevent twisting and breakage at the 10 horizontal bent portions 19.
Further, when the thick wire 100 is bent by connecting the grounding crimp terminal 10 to the middle position of the thick wire 100, a large bending stress is applied, but the bent portion A of the wire 100 and the core wire barrel 12 are Since the second insulation coating barrel 14 is provided therebetween, it is possible to effectively block and reduce the transmission of the bending stress to the exposed core wire 100a. In particular, when the bent portion A of the electric wire 100 is provided in the vicinity of the exposed portion of the core wire 100a and the stress transmission to the core wire 100a is increased, the second insulating coating barrel 14 that has not been provided conventionally is provided to the core wire 100a. It is possible to effectively block the stress transmission.
In addition, you may provide the press contact part which provided the female terminal or male terminal connected to another electric wire, and also the press contact blade to the board | substrate part 11 extended from the 2nd insulation coating barrel 14. FIG.
[0024]
FIG. 6 shows a second embodiment.
The difference from the first embodiment is that a vertical bent portion bent in the vertical direction is not provided in the extending portion 18 ′.
That is, a substrate in which the core wire barrel 12 and the first and second insulation coating barrels 13 and 14 are provided in the extending portion 18 ′ in which the substrate portion 11 is extended from the second insulation coating barrel 14 of the ground crimp terminal 30. A horizontal bent portion 19 that is bent laterally on the same horizontal plane with respect to the portion 11 ′ is provided, and a bolt hole 19 a ′ is formed on the distal end side of the horizontal bent portion 19.
With the above configuration, when the ground connection is made at the middle portion of the thick wire 100, the bolt B fastening position does not come directly under the thick wire 100, so that the ground connection work is facilitated.
Other configurations are the same as those in the first embodiment, and thus the same reference numerals are given and description thereof is omitted.
7A and 7B show a third embodiment.
The difference from the first embodiment is that it is not a grounding crimp terminal but an intermediate splice crimping terminal 40 having no extension.
[0026]
The crimp terminal 40 is obtained by punching a single conductive metal plate, and includes a first insulating coating barrel 13 erected from both sides in the width direction at one end of the substrate portion 11 ″, and the substrate portion 11. ”In the width direction with a necessary gap 16, 17 between the second insulation coating barrel 14 erected from both sides in the width direction at the other end, and the first insulation coating barrel 13 and the second insulation coating barrel 14. The core wire barrel 12 is erected from both sides, and a plurality of groove portions 15 cut out in the width direction are provided on the inner surface of the core wire barrel 12.
Note that various lengths, shapes, and the like of the same reference numerals as those in the first embodiment are the same as those in the first embodiment, and a description thereof will be omitted.
[0027]
Next, the use situation of the crimp terminal 40 for intermediate splice will be described with reference to FIG.
Three electric wires 100, 101, and 102 are spliced to the crimp terminal 40, and one electric wire 100 peels off the insulation coating 100b in the middle portion to expose the core wire 100a while two electric wires 100 are exposed. The wires 101 and 102 have their terminals peeled off to expose the core wires 101a and 102a.
Then, the core wires 100a, 101a, 102a of the electric wires 100, 101, 102 are overlapped and positioned in the core wire barrel 12 of the crimp terminal 40, and the core wires 100a, 101a, 102a are caulked with the core wire barrel 12, and the first The second insulation coating barrels 13 and 14 are crimped to the insulation coatings 100b, 101b, and 102b.
[0028]
【The invention's effect】
As is clear from the above description, according to the crimp terminal of the present invention, the first insulation coating barrel and the second insulation coating barrel are crimped to the insulation coating on both sides of the exposed core wire on both sides of the core wire barrel. Since the tensile force applied to the electric wire is received by the first and second insulation coating barrels on both sides and the tensile force transmitted to the core wire is cut off and reduced, the core wire can be protected.
In particular, when a crimp terminal is connected to the middle position of the electric wire to bend the electric wire, a large bending stress is applied, but the first insulation coating barrel or the second insulation coating is provided between the bending portion of the electric wire and the core wire barrel. Since any one of the barrels is interposed, the transmission of the bending stress to the exposed core wire can be effectively blocked and reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view of a grounding crimp terminal (crimp terminal) according to a first embodiment of the present invention.
FIG. 2 is a side view of a grounding crimp terminal.
3A is a cross-sectional view taken along line AA in FIG. 2, FIG. 3B is a cross-sectional view taken along line BB, and FIG. 3C is a cross-sectional view taken along line CC.
FIG. 4 is a rear view of a grounding crimp terminal.
FIG. 5 is a perspective view showing a use state of a grounding crimp terminal.
FIG. 6 is a perspective view of a grounding crimp terminal according to a second embodiment.
7A is a perspective view of a crimp terminal according to a third embodiment, and FIG. 7B is a diagram showing splice connection using the crimp terminal.
8A and 8B are drawings showing a conventional example.
[Explanation of symbols]
10, 30 Crimp terminal for ground (crimp terminal)
DESCRIPTION OF SYMBOLS 11 Board | substrate part 12 Core wire barrel 13 1st insulation coating barrel 14 2nd insulation coating barrel 15 Groove parts 16 and 17 Gap 18 Extension part 19 Horizontal bending part 20 Vertical bending part 20a Bolt hole 21 Reinforcement bead 22 Reinforcement rib 40 Crimp terminal 100 Electric wire 100a Core wire 100b Insulation coating B Bolt P Car body panel

Claims

A crimp terminal comprising a conductive metal plate, and having an insulation coating barrel provided on both sides of a core wire barrel that is crimped to an exposed core wire by peeling off the insulation coating of the electric wire.

The first insulating coating barrel is provided at one end of the substrate portion, the core wire barrel is provided at a predetermined interval from the insulating coating barrel, the second insulating coating barrel is provided at a predetermined interval from the core wire barrel, The first and second insulation coating barrels and the core wire barrel project in the opening direction from both sides in the width direction of the substrate portion, and the substrate portion extends from the second insulation coating barrel. The crimp terminal according to claim 1, wherein a bolt hole is provided in the part to serve as a ground terminal.

The extension part of the said board | substrate part is bent to the side on the same horizontal surface with respect to the board | substrate part which provided the said core wire barrel and the insulation coating barrel, The said bolt hole is provided in this bending part. Crimp terminal.

The extending portion of the substrate portion is bent sideways on the same horizontal plane with respect to the substrate portion provided with the core wire barrel and the insulating coating barrel, and then the bent portion is further bent downward or upward in the vertical direction. The crimp terminal according to claim 2, wherein the bolt hole is provided in the bent portion in the vertical direction.

The crimp terminal according to claim 3 or 4, wherein a reinforcing bead is provided on the substrate portion of the bent portion, and / or a reinforcing rib is projected along at least the inner peripheral edge of the bent portion.

The crimp terminal according to any one of claims 2 to 5 is connected to a thick electric wire, and an intermediate portion of the thick electric wire is peeled off to expose a core wire, and the core wire barrel is connected to the core wire. The first and second insulation coating barrels are crimped to the insulation coating on both sides of the core wire, and the thick wire crimped to the second insulation coating barrel is connected to the extension portion. A terminal-to-wire connection structure in which the intermediate portion of the thick electric wire is grounded at the extended portion that is bent to the side farther away from the thick electric wire.