JPH0258750B2 - - Google Patents

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は被覆電線と被覆電線とを接続する接続
端子を用いてこの接続部を水密状に絶縁接続する
ために用いる電線接続端子の絶縁具とこの絶縁具
を用いて電線を水密状に絶縁接続する方法とに関
する発明である。[Detailed Description of the Invention] <Industrial Application Field> The present invention provides an insulator for a wire connection terminal used to connect a covered wire to a covered wire in a watertight manner using a connection terminal to connect the connection portion in a watertight manner. This invention relates to a method for insulating and connecting electric wires in a watertight manner using this insulator.

〈従来の技術〉 従来この種の電線接続端子の絶縁具としては、
端子に絶縁被覆筒を被せて一体化したものが既に
製品化されている。しかし、この従来のものは電
線接続端子に絶縁用被覆筒を単に被せただけのも
のであつた。<Prior art> Conventional insulators for this type of wire connection terminal include:
Products in which the terminal is covered with an insulating jacket and integrated have already been commercialized. However, this conventional device simply covers the wire connection terminal with an insulating jacket.

〈発明が解決しようとする課題〉 従つて、従来の電線接続端子の接続具は接続す
る電線Ｋ端部の裸部分ｋを挟持する電線挟持部分
（図における１ａ，１１ａ）とその覆い部（図に
おける２ａ，１２ａ）との間に空隙が生じ、水密
性を保つことができず、また、雌雄の絶縁被覆筒
（図における２ｃ１２ｃ）同士の嵌合部間にも空
隙（第８図におけるＣ）があつて水密性を保つこ
とができないものであつたため、水滴等の多い多
湿場所では漏電の危険性があつて使用できないと
いう問題があつた。<Problems to be Solved by the Invention> Therefore, the conventional electric wire connecting terminal connector has a wire clamping part (1a, 11a in the figure) that clamps the bare part k of the end of the electric wire K to be connected, and a covering part (1a, 11a in the figure). 2a, 12a) in Figure 8, making it impossible to maintain watertightness, and also creating a gap (C in Figure 8) between the fitting parts of the male and female insulation covering tubes (2c and 12c in the figure). However, there was a problem that it could not be used in humid places with a lot of water droplets because of the risk of electrical leakage.

また、このような従来品にあつては、前記のよ
うに電線挟持部とこれを被覆する覆い部との間並
びに嵌合された絶縁被覆筒同士の間に空隙がある
ため電線が放射方向に受ける外力や、接続した機
器から伝達される振動が裸電線部分の端子挟持基
部、即ち端子挟持部の接続基部に集中的にかか
り、該電線接続基部が脆弱化し切断するという問
題があつた。 In addition, in the case of such conventional products, as mentioned above, there are gaps between the wire clamping part and the covering part that covers it, as well as between the fitted insulation covering tubes, so the wires do not move in the radial direction. External forces received and vibrations transmitted from connected equipment are concentrated on the terminal clamping base of the bare wire portion, that is, the connection base of the terminal clamping part, which causes the wire connection base to weaken and break.

本発明は、このような従来品の諸問題点を一挙
に解決することを目的とし、被覆筒の覆い部を電
線接続端子挿入時において電線挟持部が容易に挿
入できる大きさとしたものでありながら、電線端
子同士の接続後においては電線挟持部とその覆い
部が電線の被覆部外周面に気密状に密着するよう
に縮小変形するチユーブによつて水密状に密閉す
ることができるとともに、雌雄の延長筒状部間の
空隙部もまた水密状を保持することができるよう
にした電線接続端子の水密絶縁具とこれを用いた
電線の水密絶縁方法とを提案するものである。 The purpose of the present invention is to solve all of the problems of conventional products at once, and the cover part of the sheathing tube is made large enough to allow the wire clamping part to be easily inserted when inserting the wire connection terminal. After the wire terminals are connected, the wire clamping part and its covering part can be sealed watertightly by the tube that shrinks and deforms so as to come into close contact with the outer circumferential surface of the sheathing part of the wire, and the male and female The present invention proposes a watertight insulating device for a wire connection terminal in which the gap between the extended cylindrical portions can also be kept watertight, and a method for insulating a wire in a watertight manner using the same.

〈課題を解決するための手段〉 この目的を達成するための本発明の構成を、実
施例に対応する第１図乃至第９図を用いて説明す
ると、絶縁具の構成は、相互に挿入嵌合すること
によつて電気的接続を行なうように形成した雄型
と雌型とからなる一対の電線接続端子１，１１を
挿入してこれを被覆する雌雄一対の絶縁具Ａ，Ｂ
であつて、電線挟持部１ａと雌雄何れかの接続部
１ｂと抜け止め係止部１ｃとを有する金属製接続
端子１における接続部１ｂと係止部１ｃとを通過
させ電線挟持部１ａを通過させない小孔２ｄを形
成した中間部２ｂと、前記接続端子１の挟持部１
ａを内嵌する覆い部２ａと他方の延長筒状部１２
ｃに内嵌する雄側延長筒状部２ｃとを左右に連設
形成した合成樹脂製被覆筒２と、該被覆筒２の少
なくとも覆い部２ａ上に接着連設した連設部３ａ
と被覆電線Ｋの被覆部ｃ上を外套する外套部３ｂ
とその内面に接着された熱熔融性樹脂層３ｃとを
有する熱収縮性チユーブ３とからなる雄側絶縁具
Ａと、電線挟持部１１ａと前記接続部１ｂと嵌合
して電気的接続をする接続部１１ｂと抜け止め係
止部１１ｃとを有する金属製接続端子１１におけ
る接続部１１ｂと係止部１１ｃとを通過させ電線
挟持部１１ａを通過させない小孔１２ｄを形成し
た中間部１２ｂと、前記接続端子１１の挟持部１
１ａを内嵌する覆い部１２ａと前記雄側延長筒状
部２ｃに外嵌する雌側延長筒状部１２ｃとを左右
に連設形成した合成樹脂製被覆筒１２と、該被覆
筒１２の少なくとも覆い部２ａ上に接着連設した
連設部１３ａと被覆電線Ｋの被覆部ｃ上を外套す
る外套部１３ｂとその内面に接着された熱熔融性
樹脂層３ｃとを有する熱収縮性チユーブ１３とか
らなる雌側絶縁具Ｂとで構成され、かつ、これら
両合成樹脂製被覆筒２，１２の延長筒状部２ｃ，
１２ｃが端子１，１１の接続部１ｂ，１１ｂを相
互に挿入嵌合させた姿勢において相手側の延長筒
状部１２ｃ，２ｃと相互に嵌合する長さに形成さ
れ、かつ、これら延長筒状部２ｃ，１２ｃの嵌合
部分位置に相当する部分に水密用リング５を装着
されている構成としたものである。<Means for Solving the Problems> The structure of the present invention for achieving this object will be explained using FIGS. 1 to 9 corresponding to the embodiments. A pair of male and female insulators A and B for inserting and covering a pair of wire connection terminals 1 and 11 formed of a male type and a female type formed so as to make an electrical connection by mating them together.
The wire is passed through the connecting portion 1b and the locking portion 1c of the metal connecting terminal 1, which has the wire holding portion 1a, either the male or female connecting portion 1b, and the locking portion 1c, and the wire is passed through the wire holding portion 1a. The intermediate portion 2b has a small hole 2d formed therein, and the clamping portion 1 of the connecting terminal 1.
The cover part 2a into which a is fitted and the other extension cylindrical part 12
A synthetic resin covering tube 2 in which a male extension cylindrical portion 2c that fits inside the sleeve 2c is formed in a continuous manner on the left and right, and a continuous portion 3a that is adhesively connected to at least the cover portion 2a of the covering tube 2.
and a jacket part 3b that covers the covering part c of the covered electric wire K.
and a heat-shrinkable tube 3 having a heat-fusible resin layer 3c adhered to its inner surface, the male insulator A is fitted with the wire holding portion 11a and the connection portion 1b to establish an electrical connection. An intermediate portion 12b formed with a small hole 12d that allows the connection portion 11b and the locking portion 11c to pass through and prevents the wire clamping portion 11a from passing through the metal connecting terminal 11 having the connection portion 11b and the retaining portion 11c; Clamping part 1 of connection terminal 11
A synthetic resin covering cylinder 12 in which a cover part 12a into which the cylindrical part 1a is fitted and a female extension cylindrical part 12c which is externally fitted into the male extension cylindrical part 2c are formed in a row on the left and right; A heat-shrinkable tube 13 having a continuous part 13a glued and continuous on the covering part 2a, a mantle part 13b covering the covering part c of the covered electric wire K, and a heat-melting resin layer 3c adhered to the inner surface of the mantle part 13b. and an extension cylindrical part 2c of both synthetic resin covering tubes 2, 12,
12c is formed to a length that fits with the mating extended cylindrical parts 12c, 2c when the connecting parts 1b, 11b of the terminals 1, 11 are inserted and fitted together, and these extended cylindrical parts A watertight ring 5 is attached to a portion corresponding to the fitting portion position of the portions 2c and 12c.

また、絶縁方法の構成は上記のようにした接続
具を用いて電線の水密絶縁接続をする方法であつ
て、相互に挿入嵌合することによつて電気的接続
を行うようにした雌雄の接続部１ｂ，１１ｂと被
覆電線Ｋ，Ｋの裸電線部ｋ，ｋを連結挟持させる
電線挟持部１ａ，１１ａとこれらの中間部に位置
して抜け止め用の係止部１ｃ，１１ｃとを有する
雌雄一対の電線接続端子１，１１を用い、当該電
線挟持部１ａ，１１ａにそれぞれ被覆電線Ｋ，Ｋ
の裸電線部ｋ，ｋを圧着挟持させて連結した後、
それぞれの接続部１ｂ，１１ｂと係止部１ｃ，１
１ｃとを雌雄の絶縁具Ａ，Ｂに、当該絶縁具Ａ，
Ｂにおける熱収縮性チユーブ３，１３側から小孔
２ｄ，１２ｄを通じて延長筒状部２ｃ，１２ｃ側
に突出させ、係止部１ｃ，１１ｃによつて抜け方
向への逆行を阻止させて装着し、しかる後それぞ
れの熱収縮性チユーブ３，１３における外套部３
ｂ，１３ｂを加熱し収縮させると同時にその内面
の熱熔融性樹脂層３ｃ，１３ｃを熔融させて電線
の被覆部ｃ，ｃ上に密着させ、かつ、このように
した雌雄の絶縁具Ａ，Ｂにおける前記延長筒状部
２ｃ，１２ｃ同士とその内部の前記接続端子の雌
雄の接続部１ｂ，１１ｂ同士とを相互に嵌合接続
させ、両延長筒状部２ｃ，１２ｃ間の空隙Ｃを水
密リング５によつて密閉閉塞するようにしたもの
である。 In addition, the structure of the insulation method is a method of watertight insulating connection of electric wires using the above-mentioned connecting tool, and a connection between male and female wires in which an electrical connection is made by inserting and fitting each other. A female and male wire having wire clamping parts 1a, 11a for connecting and clamping parts 1b, 11b and bare wire parts k, k of covered wires K, K, and locking parts 1c, 11c located in the middle of these parts to prevent them from coming off. Using a pair of wire connection terminals 1 and 11, covered wires K and K are attached to the wire clamping portions 1a and 11a, respectively.
After connecting the bare wire parts k and k by crimping,
Respective connection parts 1b, 11b and locking parts 1c, 1
1c to male and female insulators A and B, and the insulators A,
The heat-shrinkable tubes 3 and 13 in B are made to protrude from the sides of the heat-shrinkable tubes 3 and 13 through the small holes 2d and 12d to the extended cylindrical parts 2c and 12c, and the locking parts 1c and 11c are used to prevent the tubes from moving backward in the removal direction. After that, the mantle portion 3 in each heat-shrinkable tube 3, 13 is
Male and female insulators A and B are made by heating and shrinking the wires b and 13b, and at the same time melting the hot-melt resin layers 3c and 13c on the inner surfaces of the wires to make them adhere tightly to the covering parts c and c of the electric wires, and which are made in this way. The extension cylindrical parts 2c, 12c and the male and female connection parts 1b, 11b of the connection terminals therein are fitted and connected to each other, and the gap C between the extension cylindrical parts 2c, 12c is sealed with a watertight ring. 5, it is designed to be hermetically closed.

〈作用〉 本発明はこのような構成としたものであるか
ら、例えばモーター製造工場と、このモーターを
組込む機器の製造工場とにおいて、それぞれ別々
に雄型・雌型の接続端子１，１１のそれぞれの挟
持部１ａ，１１ａに電線Ｋ，Ｋの裸端部ｋ，ｋを
挟持接続した後において、それぞれの合成樹脂製
被覆筒２，１２の中間部２ｂ，１２ｂの小孔２
ｄ，１２ｄを介して接続端子１，１１の接続部１
ｂ，１１ｂと係止部１ｃ，１１ｃを延長筒状部２
ｃ，１２ｃ内に突出させ、その姿勢においてチユ
ーブ３，１３の外套部３ｂ，１３ｂの外周面をホ
ツトガン等の加熱器具を用いて加熱収縮させ、同
時にそれぞれの内面に接着してある熱熔融性樹脂
層３ｃ，３ｃを熔融させることによつて、この熱
熔融した樹脂層３ｃ，３ｃを介して外套部３ｂ，
１３ｂを加熱収縮させて接続電線Ｋ，Ｋの被覆部
ｃ，ｃ上に密着させるのである。<Function> Since the present invention has such a configuration, for example, the male and female connection terminals 1 and 11 can be connected separately in a motor manufacturing factory and a manufacturing factory of equipment into which this motor is installed. After the bare ends k, k of the electric wires K, K are clamped and connected to the clamping parts 1a, 11a of
Connection part 1 of connection terminals 1 and 11 via d and 12d
b, 11b and the locking parts 1c, 11c are extended into the cylindrical part 2
c, 12c, and in that position, heat-shrink the outer peripheral surfaces of the mantle portions 3b, 13b of the tubes 3, 13 using a heating tool such as a hot gun, and at the same time adhere the hot-melt resin to the inner surfaces of each. By melting the layers 3c, 3c, the outer mantle 3b,
13b is heat-shrinked and brought into close contact with the covering portions c, c of the connecting wires K, K.

このようにしておいて、組立工場または組立工
程においてモーターを機器へ組込んだのち、第９
図に示したように雄側絶縁具Ａと雌側絶縁具Ｂと
を相互に挿入連結し、内部の接続端子１，１１の
接続部１ｂ，１１ｂと延長筒状部２ｃ，１２ｃと
を接続させるのである。 In this way, after the motor is assembled into the equipment at the assembly factory or in the assembly process, the 9th
As shown in the figure, the male insulator A and the female insulator B are inserted and connected to each other, and the connection parts 1b and 11b of the internal connection terminals 1 and 11 are connected to the extension cylindrical parts 2c and 12c. It is.

〈実施例〉 以下本発明の実施例について図面に基づいて説
明する。<Examples> Examples of the present invention will be described below based on the drawings.

第１図乃至第４図は本発明の第１実施例を示す
図である。第５図乃至第９図はこれを用いた電線
の接続方法を経時的に説明する説明図である。而
して、該実施例は電線連結用接続部１ｂ，１１ｂ
を筒状とこれに嵌合する棒状とに形成した金属接
続端子１，１１に関する実施例である。而して、
これらの両金属製接続端子１，１１は銅材製で、
これを覆う外部の被覆筒２，１２はポリ塩化ビニ
ール製のインゼクシヨン成形品で、これに連設し
たチユーブ３，１３は薄着色したナイロン製品
で、その内面にポリアミド材の熱熔融層３ｃ，３
ｃが接着されている二重チユーブ状にしてある。
而して、雄雌一対の絶縁具Ａ，Ｂにおける被覆筒
２，１２は全長同芯円形で外径を大小二段の筒状
部としてあり、長手方向の中間部２ｂを接続端子
１，１１における前記接続部１ｂ，１１ｂとその
基部に突出形成した抜け止め用の弾性変形可能な
係止部１ｃ，１１ｃとが挿通可能な小孔２ｄ，１
２ｄを有するものとし、この一側に接続端子１，
１１の電線挟持部１ａ，１１ａを内装する筒状の
覆い部２ａ，１２ａを連設形成し、他側に相互に
嵌合する雄側・雌側の延長筒状部２ｃ，１２ｃを
連設形成してある。また、チユーブ３，１３は該
両被覆筒２，１２における前記外径の小径部分上
に一端側３ａ，１３ａを接着して連設してあり、
他端側３ｂ，１３ｂを外方に向けて突出形成して
ある。 1 to 4 are diagrams showing a first embodiment of the present invention. FIGS. 5 to 9 are explanatory diagrams chronologically explaining a method of connecting electric wires using this. Therefore, in this embodiment, the connecting portions 1b and 11b for connecting electric wires are
This is an embodiment of metal connecting terminals 1 and 11 formed into a cylindrical shape and a rod shape that fits into the cylindrical shape. Then,
Both metal connection terminals 1 and 11 are made of copper material,
The external covering tubes 2 and 12 that cover this are injection molded products made of polyvinyl chloride, and the tubes 3 and 13 connected thereto are made of lightly colored nylon products, and the inner surface of the tubes 3 and 12 are made of heat-fused polyamide material layers 3c and 3.
It is made into a double tube shape to which c is glued.
The covering tubes 2 and 12 of the pair of male and female insulators A and B are concentric circles over the entire length and have two cylindrical portions with outer diameters of large and small sizes, and the intermediate portion 2b in the longitudinal direction is connected to the connecting terminals 1 and 11. Small holes 2d, 1 through which the connecting portions 1b, 11b and elastically deformable locking portions 1c, 11c protruding from their bases are inserted.
2d, and on one side there are connection terminals 1,
11 electric wire clamping parts 1a, 11a are internally formed in a series of cylindrical cover parts 2a, 12a, and on the other side, male side and female side extended cylindrical parts 2c, 12c that fit into each other are formed in a continuous manner. It has been done. Further, the tubes 3, 13 are connected with one end side 3a, 13a glued on the small diameter portion of the outer diameter of both the covering tubes 2, 12,
The other end sides 3b, 13b are formed to protrude outward.

また、該実施例において雄側の延長筒状部２ｃ
にはその長手方向略中間部分の外周部に半円弧状
の環状溝４が形成してあり、該溝４に水密用のゴ
ムリング５が嵌着してある。また、他方の雌側延
長筒状部１２ｃには、前記接続端子１，１１にお
ける雌雄の接続部１ｂ，１１ｂを相互に接続した
姿勢において前記ゴムリング５が位置する部分の
内周面にゴムリング５受け用の浅い弧状の環状溝
１４が形成してある。 In addition, in this embodiment, the male side extension cylindrical portion 2c
A semi-circular annular groove 4 is formed on the outer periphery of the substantially middle portion in the longitudinal direction, and a watertight rubber ring 5 is fitted into the groove 4. Further, the other female side extension cylindrical part 12c has a rubber ring on the inner circumferential surface of the part where the rubber ring 5 is located when the male and female connecting parts 1b and 11b of the connecting terminals 1 and 11 are connected to each other. A shallow arcuate annular groove 14 is formed for receiving 5.

而して、接続端子１，１１の電線挟持部１ａ，
１１ａに被覆電線Ｋ，Ｋの裸電線部分ｋ，ｋを圧
着挟持させるとともに、その外方部に形成した被
覆部挟持部１ｄ，１１ｄに被覆部ｃ，ｃを圧着挟
持させた電線接続端子１，１１の接続部１ｂ，１
１ｂと係止部１ｃ，１１ｃとを、第５，６図に示
したようにそれぞれ前記被覆筒２，１２の小孔２
ｄ，１２ｄを通して延長筒状部２ｃ，１２ｃ内に
突出させ、係止部１ｃ，１１ｃの弾性拡開によつ
て抜け方向への逆移動を阻止させるとともに、該
被覆筒２，１２の覆い部２ａ，１２ａ内に接続端
子１，１１の挟持部１ａ，１１ａをそれぞれ内装
し、しかる後第７，８図のように前記チユーブ
３，１３の外周面をホツトガン等の加熱器具で加
熱収縮させて外套部３ｂ，１３ｂを収縮変化さ
せ、電線Ｋ，Ｋの被覆部ｃ，ｃ上に密着させるの
である。 Thus, the wire holding portions 1a of the connection terminals 1 and 11,
Wire connection terminal 1, in which bare wire portions k, k of coated wires K, K are crimped and clamped by 11a, and coated portions c, c are crimped and clamped by coated portion clamping portions 1d, 11d formed on the outer parts thereof. 11 connection parts 1b, 1
1b and the locking parts 1c, 11c are connected to the small holes 2 of the covering tubes 2, 12, respectively, as shown in FIGS.
d and 12d into the extended cylindrical portions 2c and 12c, and elastic expansion of the locking portions 1c and 11c prevents reverse movement in the withdrawal direction, and the cover portions 2a of the covering tubes 2 and 12 , 12a, respectively, and then, as shown in FIGS. 7 and 8, the outer peripheral surfaces of the tubes 3, 13 are heated and shrunk with a heating device such as a hot gun to form a jacket. The parts 3b and 13b are contracted and brought into close contact with the covering parts c and c of the electric wires K and K.

この加熱操作によつてチユーブ３，１３の内面
に接着されていた熱熔融層３ｃ，３ｃは熔融して
チユーブ３，１３の収縮圧により電線Ｋ，Ｋの被
覆部ｃ，ｃとチユーブ３，１３との間に一部が残
り一部が外面に流出し塊３ｄ，３ｄを形成する。 By this heating operation, the hot melt layers 3c, 3c that have been adhered to the inner surfaces of the tubes 3, 13 are melted, and due to the shrinkage pressure of the tubes 3, 13, the covering portions c, c of the electric wires K, K and the tubes 3, 13 are melted. A portion remains between the two and a portion flows out to the outer surface to form lumps 3d, 3d.

このようにして、被覆筒２，１２内に位置する
電線被覆部ｃ，ｃの端部と端子１，１１の挟持部
１ａ，１１ａの端部との間を熱熔融性樹脂層３
ｃ，３ｃを介して熱収縮性のチユーブ３，１３で
一連一体に、かつ、水密状に被覆させるのであ
る。 In this way, the hot melt resin layer 3
The heat-shrinkable tubes 3 and 13 are connected through the tubes 3 and 3c to cover the tubes 3 and 13 in a series and in a watertight manner.

このようにしておいて、第９図に示したように
雄側絶縁具Ａと雌側絶縁具Ｂとにおける電線接続
端子１，１１の接続部１ｂ，１１ｂを相互に挿入
嵌合させると同時に、これら両接続部１ｂ，１１
ｂ上に位置しこれらを覆う両延長筒状部２ｃ，１
２ｃをも相互に嵌合させ、雄側延長筒状部２ｃの
外周に嵌着させてあるゴムリング５の圧縮反発力
によつてこれら両延長筒状部２ｃ，１２ｃ間の空
隙部Ｃを密閉させるのである。 In this manner, as shown in FIG. 9, the connecting portions 1b and 11b of the wire connection terminals 1 and 11 in the male insulating device A and the female insulating device B are inserted and fitted into each other, and at the same time, Both these connecting parts 1b, 11
Both extended cylindrical portions 2c and 1 located on b and covering these
2c are also fitted into each other, and the gap C between these extension cylindrical parts 2c and 12c is sealed by the compressive repulsion force of the rubber ring 5 fitted on the outer periphery of the male side extension cylindrical part 2c. Let it happen.

このようにすることによつて、電線の電気的接
続を、ハンダ付けやテープ巻き等の複雑で水密性
の不確実な接続を行なうことなく、簡単にかつ完
全な水密状に、しかも振動等によつて外れること
の少ない状態に接続するのである。 By doing this, the electrical connection of the wires can be made easily and completely watertight, without the need for complicated connections such as soldering or wrapping with tape, and also prevents vibrations, etc. It is connected in such a way that it is unlikely to come loose.

該実施例において、第５〜８図に示した電線接
続端子１，１１への雌雄の絶縁具Ａ，Ｂの挿着及
びチユーブ３，１３の電線Ｋ，Ｋの被覆部ｃ，ｃ
上への加熱密着加工をそれぞれ各別に行なうべく
説明したが、この絶縁具Ａ，Ｂの挿着及び加熱密
着加工は電線接続端子１，１１の連結時において
同時に行なつてもよいことはいうまでもない。 In this embodiment, the insertion of male and female insulators A and B into the wire connection terminals 1 and 11 shown in FIGS.
Although it has been explained that the heat adhesion process is performed separately on each side, it goes without saying that the insertion of the insulators A and B and the heat adhesion process may be performed simultaneously when connecting the wire connection terminals 1 and 11. Nor.

第１０図乃至第１３図に示した実施例は、前記
第１実施例に示した雌雄の被覆筒２，１２に相当
する被覆筒２，１２における延長筒状部２ｃ，１
２ｃの形状をそれぞれ角筒形のものとし、その一
方の筒状部１２ｃの外周面に掛止用突起６ａを突
出形成し、他方の筒状部２ｃの外周面に該突起６
ａと掛止する掛止部６ｂを有する起伏自在とした
掛止用レバー６ｃを突出形成した構造としたもの
である。 The embodiment shown in FIGS. 10 to 13 has extended cylindrical portions 2c and 1 in the covering tubes 2 and 12 corresponding to the male and female covering tubes 2 and 12 shown in the first embodiment.
The shape of each of the cylindrical portions 2c is a rectangular cylinder, and a latching protrusion 6a is formed protrudingly on the outer circumferential surface of one of the cylindrical portions 12c, and the protrusion 6a is formed on the outer circumferential surface of the other cylindrical portion 2c.
It has a structure in which a latching lever 6c, which can be raised and lowered, is protruded and has a latching portion 6b that is latched to the latching lever 6c.

このような掛止体６を雌雄の筒状部２ｃ，１２
ｃに形成することによつて、これら筒状部２ｃ，
１２ｃ同士を相互に嵌合姿勢としたとき、第１２
図に示したように突起６ａに掛止部６ｂを掛止さ
せておくと、これら両筒状部２ｃ，１２ｃが振動
等によつて外れることはなく、ひいては内部の電
線接続端子１，１１における接続部１ｂ，１１ｂ
同士の接続状態を確実に保持させておくことがで
きる。 Such a hook 6 is attached to the male and female cylindrical portions 2c, 12.
By forming these cylindrical portions 2c,
When 12c are in the mutually mating position, the 12th
If the hooking portion 6b is hooked to the protrusion 6a as shown in the figure, the two cylindrical portions 2c, 12c will not come off due to vibration etc., and as a result, the inner wire connecting terminals 1, 11 will Connection parts 1b, 11b
The connection state between them can be maintained reliably.

また、該実施例では雄側筒状部２ｃと外周部に
段部７を形成して、雌側筒状部１２ｃとの相対嵌
合時におけるストツパーとして嵌合深さを規制す
るようにしてある。 Further, in this embodiment, a stepped portion 7 is formed on the male side cylindrical portion 2c and the outer peripheral portion, and serves as a stopper to regulate the fitting depth when the male side cylindrical portion 2c and the female side cylindrical portion 12c are fitted relative to each other. .

その他の点については、第１実施例の場合と同
様である。 Other points are the same as in the first embodiment.

第１３図及び第１４図に示した実施例は、前記
第１，２実施例に示した接続端子１，１１におけ
る接続部を筒状１ｂと棒状１１ｂとしたものに代
えて、第１３図に示したように、雄側の接続部１
ｂを銅板材で形成した平板状とし、雌側の接続部
１１ｂを黄銅板材で両側部を半カール状に形成し
た所謂フアストン形とし、これらの両接続部１
ｂ，１１ｂ上を覆う被覆筒２，１２における延長
筒状部２ｃ，１２ｃを平角筒形状としたものであ
る。 In the embodiment shown in FIGS. 13 and 14, the connection terminals 1 and 11 shown in the first and second embodiments have a cylindrical shape 1b and a bar shape 11b. As shown, male side connection 1
b is a flat plate made of a copper plate material, and the female side connection part 11b is made of a brass plate material and has a so-called first-stone shape with both sides formed in a half-curl shape.
The extended cylindrical portions 2c and 12c of the covering tubes 2 and 12 that cover the tops of b and 11b are shaped like rectangular tubes.

而して、該熱収縮性のチユーブ３，１３はイン
ゼクシヨン成形された高密度ポリエチレン
（HDPE）成形品の拡径品で、その内面の全域に
ポリアミド製の熱熔融性樹脂層３ｃ，３ｃを接着
形成したものである。 The heat-shrinkable tubes 3 and 13 are injection-molded high-density polyethylene (HDPE) molded products with enlarged diameter, and polyamide heat-melt resin layers 3c and 3c are bonded to the entire inner surface of the tubes. It was formed.

その他の点については、第１実施例の場合と同
様である。 Other points are the same as in the first embodiment.

本発明にいう雌雄の絶縁具Ａ，Ｂは被覆筒２，
１２における延長筒状部２ｃ，１２ｃの径の大小
によつて雌雄区別したが、その内装接続端子１，
１１の接続部１ｂ，１１ｂの雌雄によつて区別し
てもよいことは言うまでもない。 The male and female insulators A and B according to the present invention include a covering tube 2,
Males and females were distinguished depending on the diameter of the extended cylindrical portions 2c and 12c in the internal connection terminals 1 and 12, respectively.
Needless to say, the connection portions 1b and 11b of 11 may be distinguished by male and female.

また、本発明にいう被覆筒２，１２における両
延長筒状部２ｃ，１２ｃの長さはそれぞれ内部の
端子接続部１ｂ，１１ｂの長さよりも短いものと
し、これら両接続部１ｂ，１１ｂの接続を接続開
始時において裸状態で直接に行なうことができる
程度の長さにし、これら両延長筒状部２ｃ，１２
ｃが先端側の小範囲において重合嵌合できるよう
にしてもよい。この場合において水密用ゴムリン
グ５が両延長筒状部２ｃ，１２ｃ間に確実に位置
するだけの嵌合部分があればよい。また、これら
両延長筒状部２ｃ，１２ｃは雌雄何れかの側のも
のが長尺で他方が短尺のものであつてもよい。 Further, the lengths of both extension cylindrical portions 2c and 12c of the covering tubes 2 and 12 referred to in the present invention are shorter than the lengths of the internal terminal connection portions 1b and 11b, respectively, and the connection between these two connection portions 1b and 11b is made as follows. These extension cylindrical portions 2c, 12 are made long enough to allow direct connection in a bare state at the start of connection.
c may be made to overlap and fit in a small area on the distal end side. In this case, it is sufficient to have a fitting portion that allows the watertight rubber ring 5 to be reliably positioned between both the extended cylindrical portions 2c and 12c. Furthermore, the extended cylindrical portions 2c and 12c may be long on either the male or female side and short on the other side.

本発明にいう熱収縮性のチユーブ３，１３と熱
熔融性樹脂層３ｃ，３ｃとは上記の実施例におい
て説明したもののほか、高温用ナイロンと低温熔
融ナイロンとの二重層のものとしてもよく、内層
部に形成する熱熔融材は熱熔融性接着剤であつて
もよく、殊に電線の被覆材として一般に用いられ
ているポリ塩化ビニール（PVC）との接着性の
よい材料が適している。 The heat-shrinkable tubes 3, 13 and the heat-melting resin layers 3c, 3c referred to in the present invention may be of a double layer of high-temperature nylon and low-melting nylon, in addition to those described in the above embodiments. The hot-melt material formed on the inner layer may be a hot-melt adhesive, and a material that has good adhesion to polyvinyl chloride (PVC), which is generally used as a covering material for electric wires, is particularly suitable.

また、該熱収縮性のチユーブ３，１３は、内層
の熱熔融層３ｃ，３ｃを含めて、透明体若しくは
半透明体としておくと内部への端子挟持部１ａ，
１１ａの挿入状態を透視することができて便利に
用いることができる。また、該チユーブ若しくは
被覆筒を着色して内部へ挿入する接続端子１，１
１電気的容量やサイズによつて、色の異なるもの
としておくと挿入種別を間違えることなく便利に
使用できる。 Furthermore, if the heat-shrinkable tubes 3, 13, including the inner heat-melting layers 3c, 3c, are transparent or translucent, the terminal holding portions 1a,
It is possible to see through the insertion state of 11a, making it convenient to use. In addition, the tube or the covering tube is colored and the connection terminals 1, 1 are inserted into the inside.
1. If you use different colors depending on the electrical capacity and size, you can conveniently use the insertion type without making a mistake.

以上本発明の代表的と思われる実施例について
説明したが、本発明に必ずしもこれらの実施例構
造や実施例方法のみに限定されるものではなく、
本発明にいう構成要件を備えかつ、本発明にいう
目的を達成し、以下にいう効果を有する範囲内に
おいて適宜改変して実施することができるもので
ある。 Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structure or method of these embodiments.
The present invention can be modified and implemented as appropriate within the scope of having the constituent elements defined in the present invention, achieving the objectives defined in the present invention, and having the following effects.

〈発明の効果〉 本発明は以上の説明から既に明らかなように、
電線接続端子を内装して用いる絶縁具において、
絶縁性を保つための金属端子の被覆筒を絶縁性の
ある合成樹脂材料で形成し、その電線挿入側の一
端部において電線の被覆部上を覆うようにして、
その被覆部を熱収縮性樹脂材料を用いて形成し、
かつ、その内面には熱熔融性の樹脂層を形成し、
更に金属接続端子における接続部同士を接続した
姿勢においてその接続部上を覆う延長筒状部を相
互に重合嵌合する構造とし、その少なくとも一方
にこれら両延長筒状部間の空隙を閉塞する水密リ
ングを装着した構成としたので、雌雄の接続端子
を挿入連結した後において、チユーブの外套部を
加熱収縮させると同時に熱熔融性樹脂層を熔融さ
せて電線の被覆上に密着させ、熔融樹脂剤をもつ
て接着剤の役目と密封剤の役目とを果させること
によつて、電線の接続端子への挟持部の水密性を
充分に保たせることができると同時に端子挟持部
と電線被覆端部との間における裸電線基端部への
振動等の局部的集中性を避けさせることができ、
また二つ被覆筒の延長筒状部間に生じる空隙部を
水密リングによつて確実に水密状態に閉塞するこ
とができるので、多湿状雰囲気中においても漏電
の危険性の極めて少ない状態として使用すること
ができ、同時に裸電線基端部の外的振動や引張り
力等による集中的劣化破損を防止し、長年月の使
用に耐え得る電線接続状態を補償することができ
るという大なる利点を有する。<Effects of the Invention> As is already clear from the above description, the present invention has the following advantages:
In insulators used with internal wire connection terminals,
The covering tube of the metal terminal for maintaining insulation is formed of an insulating synthetic resin material, and one end of the wire insertion side is made to cover the covering part of the wire,
The covering portion is formed using a heat-shrinkable resin material,
In addition, a heat-melting resin layer is formed on the inner surface,
Furthermore, when the connecting parts of the metal connection terminal are in a connected position, the extended cylindrical parts that cover the connected parts are designed to overlap and fit each other, and at least one of them has a watertight structure that closes the gap between the two extended cylindrical parts. Since the ring is attached, after the male and female connection terminals are inserted and connected, the outer part of the tube is heated and shrunk, and at the same time, the hot-melt resin layer is melted and adhered to the wire sheathing, and the molten resin is applied. By acting as an adhesive and a sealant, it is possible to maintain sufficient watertightness of the clamping part of the electric wire to the connection terminal, and at the same time, the terminal clamping part and the end of the wire sheathing can be kept sufficiently watertight. It is possible to avoid local concentration of vibrations etc. at the base end of the bare electric wire between the
In addition, since the gap created between the extended cylindrical parts of the two covering tubes can be reliably closed in a watertight state by the watertight ring, it can be used in a state where the risk of electrical leakage is extremely low even in a humid atmosphere. At the same time, it has the great advantage of preventing intensive deterioration and damage at the base end of the bare wire due to external vibrations, tensile forces, etc., and ensuring a wire connection condition that can withstand many years of use.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図乃至第４図は本発明の第１実施例を示す
ものであつて、第１図、第２図は斜視図、第３
図、第４図は中央縦断面図、第５図乃至第９図は
本発明方法を順次的に示した何れも中央縦断面
図、第１０図乃至第１２図は他の実施例を示した
もので、第１０，１１図は斜視図、第１２図は連
結状態を示す中央縦断面図、第１３図及び第１４
図は更に他の実施例を示した斜視図及びその断面
図である。 図中１，１１は接続端子、１ａ，１１ａは挟持
部、１ｂ，１１ｂは接続部、１ｃ，１１ｃは係止
部、２，１２は被覆筒、２ａ，１２ａは覆い部、
２ｂ，１２ｂは中間部、２ｃ，１２ｃは延長筒状
部、２ｄ，１２ｄは小孔、３は熱収縮性チユー
ブ、３ａ，１３ａは連設部、３ｂ，１３ｂは外套
部、３ｃは熱熔融性樹脂層、５は水密リング、Ａ
は雄側絶縁具、Ｂは雌側絶縁具、Ｃは空隙、Ｋは
電線、ｋは裸電線部、ｃは被覆部を示す。 1 to 4 show a first embodiment of the present invention, and FIGS. 1 and 2 are perspective views, and FIGS.
4 is a central longitudinal sectional view, FIGS. 5 to 9 are central longitudinal sectional views sequentially showing the method of the present invention, and FIGS. 10 to 12 are central longitudinal sectional views. Figures 10 and 11 are perspective views, Figure 12 is a central vertical sectional view showing the connected state, Figures 13 and 14.
The figures are a perspective view and a sectional view showing still another embodiment. In the figure, 1 and 11 are connecting terminals, 1a and 11a are holding parts, 1b and 11b are connection parts, 1c and 11c are locking parts, 2 and 12 are covering tubes, 2a and 12a are covering parts,
2b, 12b are intermediate parts, 2c, 12c are extended cylindrical parts, 2d, 12d are small holes, 3 is heat shrinkable tube, 3a, 13a are continuous parts, 3b, 13b are outer mantle parts, 3c is heat meltable Resin layer, 5 is watertight ring, A
denotes a male insulator, B a female insulator, C a gap, K a wire, k a bare wire portion, and c a coated portion.

Claims (1)

【特許請求の範囲】 １ 相互に挿入嵌合することによつて電気的接続
を行なうように形成した雄型と雌型とからなる一
対の電線接続端子１，１１を挿入してこれを被覆
する雌雄一対の絶縁具Ａ，Ｂであつて、電線挟持
部１ａと雌雄何れかの接続部１ｂと抜け止め係止
部１ｃとを有する金属製接続端子１における接続
部１ｂと係止部１ｃとを通過させ電線挟持部１ａ
を通過させない小孔２ｄを形成した中間部２ｂ
と、前記接続端子１の挟持部１ａを内嵌する覆い
部２ａと他方の延長筒状部１２ｃに内嵌する雄側
延長筒状部２ｃとを左右に連設形成した合成樹脂
製被覆筒２と、該被覆筒２の少なくとも覆い部２
ａ上に接着連設した連設部３ａと被覆電線Ｋの被
覆部ｃ上を外套する外套部３ｂとその内面に接着
された熱熔融性樹脂層３ｃとを有する熱収縮性チ
ユーブ３とからなる雄側絶縁具Ａと、電線挟持部
１１ａと前記接続部１ｂと嵌合して電気的接続を
する接続部１１ｂと抜け止め係止部１１ｃとを有
する金属製接続端子１１における接続部１１ｂと
係止部１１ｃとを通過させ電線挟持部１１ａを通
過させない小孔１２ｄを形成した中間部１２ｂ
と、前記接続端子１１の挟持部１１ａを内嵌する
覆い部１２ａと前記雄側延長筒状部２ｃに外嵌す
る雌側延長筒状部１２ｃとを左右に連設形成した
合成樹脂製被覆筒１２と、該被覆筒１２の少なく
とも覆い部２ａ上に接着連設した連設部１３ａと
被覆電線Ｋの被覆部ｃ上を外套する外套部１３ｂ
とその内面に接着された熱熔融性樹脂層３ｃとを
有する熱収縮性チユーブ１３とからなる雌側絶縁
具Ｂとで構成され、かつ、これら両合成樹脂製被
覆筒２，１２の延長筒状部２ｃ，１２ｃが端子
１，１１の接続部１ｂ，１１ｂを相互に挿入嵌合
させた姿勢において相手側の延長筒状部１２ｃ，
２ｃと相互に嵌合する長さに形成され、かつ、こ
れら延長筒状部２ｃ，１２ｃの嵌合部分位置に相
当する部分に水密用リング５を装着させてある電
線接続端子の水密絶縁具。 ２ 請求項１に記載の電線接続端子の水密絶縁具
を用いて電線の水密絶縁接続をする方法であつ
て、相互に挿入嵌合することによつて電気的接続
を行うようにした雌雄の接続部１ｂ，１１ｂと被
覆電線Ｋ，Ｋの裸電線部ｋ，ｋを連結挟持させる
電線挟持部１ａ，１１ａとこれらの中間部に位置
して抜け止め用の係止部１ｃ，１１ｃとを有する
雌雄一対の電線接続端子１，１１を用い、当該電
線挟持部１ａ，１１ａにそれぞれ被覆電線Ｋ，Ｋ
の裸電線部ｋ，ｋを圧着挟持させて連結した後、
それぞれの接続部１ｂ，１１ｂと係止部１ｃ，１
１ｃとを雌雄の絶縁具Ａ，Ｂに、当該絶縁具Ａ，
Ｂにおける熱収縮性チユーブ３，１３側から小孔
２ｄ，１２ｄを通じて延長筒状部２ｃ，１２ｃ側
に突出させ、係止部１ｃ，１１ｃによつて抜け方
向への逆行を阻止させて装着し、しかる後それぞ
れの熱収縮性チユーブ３，１３における外套部３
ｂ，１３ｂを加熱し収縮させると同時にその内面
の熱熔融性樹脂層３ｃ，３ｃを熔融させて電線の
被覆部ｃ，ｃ上に密着させ、かつ、このようにし
た雌雄の絶縁具Ａ，Ｂにおける前記延長筒状部２
ｃ，１２ｃ同士とその内部の前記接続端子の雌雄
の接続部１ｂ，１１ｂ同士とを相互に嵌合接続さ
せ、両延長筒状部２ｃ，１２ｃ間の空隙Ｃを水密
リング５によつて密閉閉塞する電線の水密絶縁接
続方法。[Scope of Claims] 1. A pair of wire connection terminals 1 and 11 consisting of a male type and a female type formed so as to establish an electrical connection by inserting and fitting into each other are inserted and covered. The connecting part 1b and the locking part 1c of a metal connecting terminal 1, which is a pair of male and female insulators A and B, and have a wire clamping part 1a, a male or female connecting part 1b, and a retaining part 1c. Passing electric wire holding part 1a
The intermediate portion 2b has a small hole 2d that does not allow the passage of
and a synthetic resin covering tube 2 in which a covering section 2a into which the holding section 1a of the connection terminal 1 is fitted and a male side extension cylindrical section 2c into which the other extension cylindrical section 12c is fitted are arranged in a row from side to side. and at least the cover portion 2 of the covering tube 2
It consists of a heat-shrinkable tube 3 having a continuous part 3a glued and continuous on a, a mantle part 3b covering the covering part c of the covered electric wire K, and a heat-melting resin layer 3c adhered to the inner surface of the mantle part 3b. The male insulator A is engaged with the connecting portion 11b of the metal connecting terminal 11, which has a connecting portion 11b that fits with the wire holding portion 11a and the connecting portion 1b to establish an electrical connection, and a retaining portion 11c. An intermediate portion 12b formed with a small hole 12d that allows the stop portion 11c to pass through and prevents the wire clamping portion 11a from passing through.
and a synthetic resin covering tube in which a cover portion 12a into which the holding portion 11a of the connection terminal 11 is fitted and a female extension cylindrical portion 12c into which the male extension cylindrical portion 2c is fitted are arranged in a row on the left and right sides. 12, a continuous part 13a adhesively provided on at least the covering part 2a of the covering tube 12, and a mantle part 13b covering the covering part c of the covered electric wire K.
and a heat-shrinkable tube 13 having a heat-fusible resin layer 3c adhered to its inner surface, and an extension cylindrical shape of both synthetic resin covering tubes 2 and 12. In the posture in which the parts 2c and 12c insert and fit the connecting parts 1b and 11b of the terminals 1 and 11 into each other, the mating extended cylindrical part 12c,
2c, and a watertight ring 5 is attached to a portion corresponding to the fitting portion position of these extended cylindrical portions 2c, 12c. 2. A method for watertight insulated connection of electric wires using the watertight insulating device of the electric wire connection terminal according to claim 1, wherein male and female connections are made to electrically connect by inserting and fitting each other. A female and male wire having wire clamping parts 1a, 11a for connecting and clamping parts 1b, 11b and bare wire parts k, k of covered wires K, K, and locking parts 1c, 11c located in the middle of these parts to prevent them from coming off. Using a pair of wire connection terminals 1 and 11, covered wires K and K are attached to the wire clamping portions 1a and 11a, respectively.
After connecting the bare wire parts k and k by crimping,
Respective connection parts 1b, 11b and locking parts 1c, 1
1c to male and female insulators A and B, and the insulators A,
The heat-shrinkable tubes 3 and 13 in B are made to protrude from the sides of the heat-shrinkable tubes 3 and 13 through the small holes 2d and 12d to the extended cylindrical parts 2c and 12c, and the locking parts 1c and 11c are used to prevent the tubes from moving backward in the removal direction. After that, the mantle portion 3 in each heat-shrinkable tube 3, 13 is
Male and female insulators A and B are made by heating and shrinking the wires b and 13b, and at the same time melting the hot-melt resin layers 3c and 3c on the inner surfaces of the wires to tightly adhere them to the covering parts c and c of the electric wires. The extended cylindrical portion 2 in
c and 12c and the male and female connecting portions 1b and 11b of the connection terminals therein are fitted and connected to each other, and the gap C between both the extended cylindrical portions 2c and 12c is hermetically closed by the watertight ring 5. Watertight insulation connection method for electrical wires.