JPH0735195Y2 - Welding joint - Google Patents
Welding jointInfo
- Publication number
- JPH0735195Y2 JPH0735195Y2 JP1990109599U JP10959990U JPH0735195Y2 JP H0735195 Y2 JPH0735195 Y2 JP H0735195Y2 JP 1990109599 U JP1990109599 U JP 1990109599U JP 10959990 U JP10959990 U JP 10959990U JP H0735195 Y2 JPH0735195 Y2 JP H0735195Y2
- Authority
- JP
- Japan
- Prior art keywords
- boss
- joint
- joint body
- heating element
- peripheral portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、熱可塑性樹脂製のガス管や水道管等の溶着接
合に用いられる溶着継手に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a welding joint used for welding and joining a thermoplastic resin gas pipe or water pipe.
（従来の技術） 継手には、継手本体が熱可塑性樹脂で形成され、継手本
体の内周部に導電線等の加熱要素が埋設され、この加熱
要素の両端と接続した端子が、継手本体の外周部に形成
された筒状ボスの内部に配設された溶着継手とよばれる
ものがある。この溶着継手は、継手本体に熱可塑性樹脂
管を差し込んだ状態で端子間に電圧をかけて通電させ、
加熱要素を発熱させることにより、継手本体の内周部と
熱可塑性樹脂管の外周部が溶融して互いに溶着するよう
になっている（特公昭63−24820号公報参照）。(Prior Art) In a joint, a joint body is formed of a thermoplastic resin, a heating element such as a conductive wire is embedded in an inner peripheral portion of the joint body, and terminals connected to both ends of the heating element are connected to the joint body. There is a so-called welding joint arranged inside a cylindrical boss formed on the outer peripheral portion. In this welding joint, a voltage is applied between the terminals with the thermoplastic resin tube inserted in the joint body, and the
By heating the heating element, the inner peripheral portion of the joint body and the outer peripheral portion of the thermoplastic resin tube are melted and welded to each other (see Japanese Patent Publication No. 63-24820).
（考案が解決しようとする課題） しかしながら、このような従来の溶着継手にあっては、
雨天の下で敷設作業を行う場合、ボスの中に水が浸入し
て溜ってしまう。(Problems to be solved by the invention) However, in such a conventional welding joint,
When laying under rainy weather, water gets into the boss and collects.
従って、端子間に電圧をかけても漏電して通電できない
という問題が生じる。Therefore, there is a problem that even if a voltage is applied between the terminals, the current leaks and the current cannot flow.
また、熱可塑性樹脂間を溶着できたとしてもボスの中に
水が溜ったまま放置されることにより、端子が腐食した
り電食したりし、それが原因となって継手本体の腐食が
生じるという問題もあった。In addition, even if the thermoplastic resins can be welded together, if the water remains in the boss, the terminals may corrode or cause galvanic corrosion, which causes corrosion of the joint body. There was also a problem.
本考案は、上記従来の問題に着目し、雨天の下でも管の
敷設作業を行うことができると共に、敷設後における端
子の腐食や電食を防止することができる溶着継手を提供
することを目的としている。The present invention focuses on the above conventional problems, and an object of the present invention is to provide a welded joint that can perform pipe laying work even in rainy weather and can prevent corrosion and electrolytic corrosion of terminals after laying. I am trying.
（課題を解決するための手段） 本考案は、上述のような課題を解決することを目的とし
たもので、この目的達成のために、本考案の溶着継手
は、熱可塑性樹脂製継手本体の内周部に加熱要素が埋設
され、該加熱要素の両端と接続した端子が前記継手本体
の外周部に形成された筒状のボス内に配設され、該ボス
の基部を貫通して水抜き穴が形成されているものであ
る。(Means for Solving the Problems) The present invention is intended to solve the above-described problems, and in order to achieve this object, the fusion-bonded joint of the present invention is made of a thermoplastic resin joint body. A heating element is embedded in the inner peripheral portion, terminals connected to both ends of the heating element are disposed in a cylindrical boss formed on the outer peripheral portion of the joint body, and drains through the base of the boss. A hole is formed.
（作用） 本考案の溶着継手では、筒状のボスの基部を貫通して水
抜き穴が形成されているので、ボスの中に水が浸入した
としても水抜き穴から水が外部に流れ出し、ボスの中に
水が溜らない。(Operation) In the welding joint of the present invention, the drain hole is formed through the base of the cylindrical boss, so even if water enters the boss, the water will flow out through the drain hole. Water doesn't collect in the boss.
（実施例） 以下、本考案の実施例を図面により詳述する。Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.
尚、実施例を説明するにあたり、ソケット状の溶着継手
を例にとる。In describing the embodiment, a socket-shaped welding joint will be taken as an example.
まず、第１図及び第２図に基づいて、実施例の構成を説
明する。First, the configuration of the embodiment will be described with reference to FIGS. 1 and 2.
第１図は本考案実施例の溶着継手を示す縦断面図、第２
図は第１図の要部IIを示す拡大図である。FIG. 1 is a longitudinal sectional view showing a welding joint according to an embodiment of the present invention, and FIG.
The drawing is an enlarged view showing the main part II of FIG.
本実施例の溶着継手は、第１図に示すように、継手本体
１が円筒状に形成され、該継手本体１の開口端11,12
に、熱可塑性樹脂管P1,P2の端部が挿入状態で溶着接合
されるソケット状の溶着継手である。In the welded joint of this embodiment, as shown in FIG. 1, the joint body 1 is formed in a cylindrical shape, and the open ends 11, 12 of the joint body 1 are formed.
A socket-shaped welding joint in which the ends of the thermoplastic resin pipes P1 and P2 are welded and joined in an inserted state.
前記継手本体１は、ポリプロピレン樹脂，ポリエチレン
樹脂，塩化ビニル樹脂，ポリブテン樹脂等の熱可塑性樹
脂を素材として、例えば射出成形により形成されてお
り、内面には、軸方向略中央部に、両開口端11,12から
挿入した熱可塑性樹脂管P1,P2の挿入を所定位置で規制
するための突起13が環状に形成されている。The joint body 1 is made of a thermoplastic resin such as polypropylene resin, polyethylene resin, vinyl chloride resin, or polybutene resin by injection molding, for example. A protrusion 13 is formed in an annular shape to regulate the insertion of the thermoplastic resin pipes P1 and P2 inserted from 11, 12 at a predetermined position.
また、図中２は加熱要素として設けられた導電線で、こ
の導電線２は、ニクロム線、銅・ニッケル合金線、マン
ガン・ニッケル合金線、クロメル線、鉄クロム線等の一
本の一般抵抗用線材で、継手本体１の内周部に螺旋状に
埋設されている。また、前記導電線２は、継手本体１の
突起13を中心として、一方の開口端11から挿入する熱可
塑性樹脂管P1との溶着用の第１群21と、他方の開口端12
から挿入する熱可塑性樹脂管P2との溶着用の第２群22と
に分割して設けられている。Reference numeral 2 in the figure is a conductive wire provided as a heating element, and this conductive wire 2 is one general resistance such as a nichrome wire, a copper / nickel alloy wire, a manganese / nickel alloy wire, a chromel wire, and an iron / chrome wire. It is a wire rod and is embedded in the inner peripheral portion of the joint body 1 in a spiral shape. The conductive wire 2 has a first group 21 for welding with the thermoplastic resin pipe P1 inserted from one opening end 11 around the projection 13 of the joint body 1 and the other opening end 12 thereof.
It is divided into a second group 22 for welding with a thermoplastic resin pipe P2 inserted from.
また、図中３は円筒状のボスで、前記継手本体１の外周
部の両端二箇所に設けられている。そして、前記ボス３
には、基部を貫通して円形の水抜き穴31が形成されてい
る。更に、各ボス３の内部には、主として真鍮や砲金、
銅等の低抵抗材料で形成された端子４が内蔵されてい
る。Reference numeral 3 in the drawing denotes a cylindrical boss, which is provided at two positions on both ends of the outer peripheral portion of the joint body 1. And the boss 3
A circular drainage hole 31 is formed through the base. Furthermore, inside each boss 3, mainly brass and gun metal,
A terminal 4 made of a low resistance material such as copper is built in.
尚、前記端子４の底には孔41が形成されており、前記導
電線２の両端がこの孔41に差し込まれて接続されてい
る。A hole 41 is formed in the bottom of the terminal 4, and both ends of the conductive wire 2 are inserted into the hole 41 to be connected.
次に、実施例の作用を説明する。Next, the operation of the embodiment will be described.
上述のように本実施例の溶着継手は、ボス３の基部を貫
通して水抜き穴31が形成されているので、ボス３の中に
水が浸入したとしても水抜き穴31から水が外部に流れ出
るので、ボスの中に水が溜らない。つまり、雨天の下で
も管の敷設作業を行うことができると共に、敷設後にお
ける端子の腐食や電食を防止することができる。As described above, in the welding joint of the present embodiment, the water drain hole 31 is formed by penetrating the base portion of the boss 3. Therefore, even if water enters the boss 3, the water will not flow outside from the water drain hole 31. The water doesn't collect in the boss because it flows out. That is, the pipe laying work can be performed even in rainy weather, and the corrosion and electrolytic corrosion of the terminals after laying can be prevented.
以上、本考案の実施例を図面により詳述してきたが、具
体的な構成はこの実施例に限れるものではなく本考案の
要旨を逸脱しない範囲の設計変更等があっても本考案に
含まれる。Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and even if there is a design change or the like within a range not departing from the gist of the present invention, it is included in the present invention. Be done.
例えば、実施例では、ソケット形状の溶着継手に適用し
た例を示したが、分岐継手やエルボ、チーズ、レジュー
サ等、形状の異なる溶着継手に適用してもよい。For example, in the embodiment, an example in which the invention is applied to a socket-shaped welding joint is shown, but the invention may be applied to welding joints having different shapes such as a branch joint, an elbow, cheese, and a reducer.
また、加熱要素は、本質的なものではなく、例えば、多
数の細い長尺のニクロム線や炭素繊維等の導電線が束ね
られた加熱抵抗線であってもよい。また、長さが10〜20
0mmのニクロム線や炭素繊維等の導電性繊維がシート状
に抄造されたものであってもよい。Further, the heating element is not essential, and may be, for example, a heating resistance wire in which a large number of thin and long nichrome wires or conductive wires such as carbon fibers are bundled. Also, the length is 10 ~ 20
A 0 mm nichrome wire or conductive fibers such as carbon fibers may be formed into a sheet.
更に、実施例では、水抜き穴の形状を円形にしたが、四
角形、楕円形、三角形等何でも良い。Further, in the embodiment, the shape of the drain hole is circular, but it may be square, elliptical, triangular or any other shape.
また、ターミナルピンは、特開平２−129493号公報に開
示されているように、継手本体に埋設されている加熱要
素より大きな抵抗値を有する識別抵抗を内蔵したもので
あってもよい。あるいは、特開昭58−131025号公報に開
示されているように、上記と同様の抵抗値を有する識別
抵抗に接続された補助ターミナルピンを有するものであ
ってもよい。Further, the terminal pin may have a built-in identification resistor having a resistance value larger than that of the heating element embedded in the joint body, as disclosed in JP-A-2-129493. Alternatively, as disclosed in Japanese Patent Laid-Open No. 58-131025, it may have an auxiliary terminal pin connected to an identification resistor having a resistance value similar to the above.
（考案の効果） 以上説明してきたように、本考案の溶着継手は、筒状の
ボスの基部を貫通して水抜き穴が形成されているので、
ボスの中に水が溜らないようになって、雨天の下でも管
の敷設作業を行うことができると共に、敷設後における
端子の腐食や電食を防止することができるという効果が
得られる。(Effect of the Invention) As described above, the welding joint of the present invention has the drain hole formed through the base of the cylindrical boss.
Since the water does not collect in the boss, it is possible to perform the work of laying the pipe even in rainy weather, and it is possible to prevent the corrosion and electrolytic corrosion of the terminal after the laying.
第１図は本考案実施例の溶着継手を示す縦断面図、第２
図は第１図の要部IIを示す拡大図である。 １……継手本体 ２……導電線（加熱要素） ３……ボス 31……水抜き穴 ４……端子FIG. 1 is a longitudinal sectional view showing a welding joint according to an embodiment of the present invention, and FIG.
The drawing is an enlarged view showing the main part II of FIG. 1 ... Fitting body 2 ... Conductive wire (heating element) 3 ... Boss 31 ... Drain hole 4 ... Terminal
Claims (1)
素が埋設され、該加熱要素の両端と接続した端子が前記
継手本体の外周部に形成された筒状のボス内に配設さ
れ、該ボスの基部を貫通して水抜き穴が形成されている
ことを特徴とする溶着継手。1. A heating element is embedded in an inner peripheral portion of a thermoplastic resin joint body, and terminals connected to both ends of the heating element are disposed in a cylindrical boss formed in the outer peripheral portion of the joint body. And a water drain hole is formed through the base of the boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990109599U JPH0735195Y2 (en) | 1990-10-18 | 1990-10-18 | Welding joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990109599U JPH0735195Y2 (en) | 1990-10-18 | 1990-10-18 | Welding joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0464690U JPH0464690U (en) | 1992-06-03 |
| JPH0735195Y2 true JPH0735195Y2 (en) | 1995-08-09 |
Family
ID=31856825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990109599U Expired - Lifetime JPH0735195Y2 (en) | 1990-10-18 | 1990-10-18 | Welding joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0735195Y2 (en) |
-
1990
- 1990-10-18 JP JP1990109599U patent/JPH0735195Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0464690U (en) | 1992-06-03 |
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