JPH08303674A - エレクトロフュージョン継手 - Google Patents

エレクトロフュージョン継手

Info

Publication number
JPH08303674A
JPH08303674A JP7138541A JP13854195A JPH08303674A JP H08303674 A JPH08303674 A JP H08303674A JP 7138541 A JP7138541 A JP 7138541A JP 13854195 A JP13854195 A JP 13854195A JP H08303674 A JPH08303674 A JP H08303674A
Authority
JP
Japan
Prior art keywords
joint
pipe
heating wire
opening end
electrofusion
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.)
Granted
Application number
JP7138541A
Other languages
English (en)
Other versions
JP2714773B2 (ja
Inventor
Yoshihiro Fukuhara
原 祥 皓 福
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
II F TECHNO KK
TOA KOUKIYUU KEISHIYU VALVE SEIZO KK
Original Assignee
II F TECHNO KK
TOA KOUKIYUU KEISHIYU VALVE SEIZO KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by II F TECHNO KK, TOA KOUKIYUU KEISHIYU VALVE SEIZO KK filed Critical II F TECHNO KK
Priority to JP7138541A priority Critical patent/JP2714773B2/ja
Publication of JPH08303674A publication Critical patent/JPH08303674A/ja
Application granted granted Critical
Publication of JP2714773B2 publication Critical patent/JP2714773B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B29C65/3432—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding comprising several wires, e.g. in the form of several independent windings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3468—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B29C65/348—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic with a polymer coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5224—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
    • B29C66/52241—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces with two right angles, e.g. for making T-shaped pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52292—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being internal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52297—Joining tubular articles involving the use of a socket said socket comprising slip-off prevention means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/967—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes
    • B29C66/9674—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes involving special data outputs, e.g. special data display means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

(57)【要約】 ［目的］ 管（３）とエレクトロフュージョン継手
（１）とを融着させる際、専用の治具を用いることなく
管（３）の抜け止めを行う。 ［構成］ 継手（１）の管（３）との接触面に電熱線
（５）を埋設し、電熱線（５）に電力を供給することに
よって樹脂を加熱溶融させ、管（３）と継手（１）の融
着を行うエレクトロフュージョン継手において、管
（３）端部を差し込む継手（１）の受け口部（４）の開
口端部に、内面を管外面に締め付け可能な締め止め部
（１８）を一体成形する。

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は上下水道やガスの配管と
して使用される熱可塑性合成樹脂製の管の接合に用いる
エレクトロフュージョン継手に関する。
【０００２】
【従来の技術】エレクトロフュージョン継手は、熱可塑
性合成樹脂製の継手（管がポリエチレン製の場合、継手
もポリエチレン製である）の管との接触面に電熱線を埋
め込んだものであり、この電熱線に電力を供給すること
によって樹脂を加熱融着させ、管と継手の融着を行う。
融着の際には樹脂の熱膨張により継手内部の圧力が高ま
り、この圧力が管を継手から押し出す力として作用する
ため、従来では治具を用いて管と継手または接合する管
同士を連結し、管の抜け止めを行っていた。
【０００３】
【発明が解決しようとする課題】前記従来技術は、継手
の様々な種類やサイズに対応できるように、その種類や
サイズごとの抜け止め治具を保有し、且つ、持ち運ぶこ
とを配管業者に強いることになり、また現在そのように
なっている。
【０００４】本発明は、従来のような治具を用いなくて
も管の抜け止めを行い得るエレクトロフュージョン継手
を提供することを目的としている。
【０００５】
【課題を解決するための手段】上記の目的を達成するた
めに本発明のエレクトロフュージョン継手は、継手の管
との接触面に電熱線を埋設し、電熱線に電力を供給する
ことによって樹脂を加熱溶融させ、管と継手の融着を行
うエレクトロフュージョン継手において、管端部を差し
込む継手の受け口部の開口端部に、内面を管外面に締め
付け可能な締め止め部を一体成形したものである。
【０００６】
【作 用】継手の受け口部に管端部を差し込むと共に、
前記受け口部の開口端部に一体成形された締め止め部の
内面を管外面に締め付け、電熱線に電力を供給すること
によって樹脂を加熱溶融させ、管と継手の融着を行うこ
とによって、専用の治具を用いることなく継手の締め止
め部で管の抜け止めを行い得ると共に、該締め止め部は
管と継手の隙間からの溶融樹脂の流出並びに放熱を抑
え、融着品質の向上を図り得るものである。
【０００７】
【実施例】以下本発明の実施例を図面に基づいて詳述す
る。図１は本発明に係る締め止め部の斜視図、図２は融
着方法の実体図であり、図中（１）はポリエチレン製の
Ｔ形のＥＦ継手で、継手（１）の内部に電熱線を埋め込
んだものである。詳しくは図３にも示すように、上下水
道やガスの配管として使用されるポリエチレン管（３）
の端部を差し込む継手（１）の各受け口部（４）の内
面、すなわち管（３）との接触面に電熱線（５）が埋め
込まれている。この電熱線（５）はニッケル線またはニ
ッケル合金線を素線とし、表面をポリエチレンで被覆し
た被覆線が使用され、受け口部（４）の開口端側（管を
差し込む側）に電熱線（５）の両端を出すように、電熱
線（５）は二つ折り状態で受け口部（４）の開口端より
所定寸法内側に入った所から受け口部（４）の内面にコ
イル状に埋め込まれている。また電熱線（５）の両端に
は一対の端子（６）が接続され、両端子（６）は電熱線
（５）への電力供給を各受け口部（４）の開口端面（３
ａ）から行えるように、両端子（６）を受け口部（４）
の開口端面（３ａ）から軸方向に埋め込んでいる。さら
に前記両端子（６）間の受け口部（４）の開口端面（３
ａ）にＥＦ継手（１）の品種判別用の端子（７）を設け
ている。従って各受け口部（４）の開口端面（３ａ）に
は３つの端子（６）（７）が近接して設けられている。
【０００８】また図中（８）は電熱線（５）に電力を供
給する電源装置であるエレクトロフュージョンコントロ
ーラであり、自動融着制御用の電気（電子）回路基板や
変圧器など（図示省略）をコントロールボックス（９）
に内設すると共に、スタートスイッチ（１０）、リセッ
トスイッチ（１１）、液晶表示器（１２）、漏電ブレー
カ（１３）、電源ケーブル（１４）を接続するためのコ
ネクタ（１５）、継手（１）の電熱線（５）に電力を供
給するための接続ケーブル（１６）を接続するためのコ
ネクタ（１７）を前記コントロールボックス（９）の操
作面（９ａ）に配設している。
【０００９】図４乃至図９にも示す如く、前記ＥＦ継手
（１）の各受け口部（３）の開口端部には、内面を管
（３）外面に締め付け可能な締め止め部（１８）が一体
成形されている。
【００１０】該締め止め部（１８）は割りせみ構造にな
っていて、受け口部（４）の開口端面（３ａ）から軸方
向に形成する第１の割り溝（１９）と、該第１の割り溝
（１９）の終端から連続して受け口部（４）の周方向に
形成する第２の割り溝（２０）を設けると共に、受け口
部（４）の外面から内面に到達する第１の割り溝（１
９）は前記端子（６）（７）と反対側（１８０度異なる
位置）に設け、且つ、受け口部（４）の開口端面（４
ａ）から電熱線（５）埋め込み範囲までの寸法の略半分
の長さに設け、また受け口部（４）の外面から内面に到
達する第２の割り溝（２０）は受け口部（４）の開口端
面（４ａ）と平行に設け、且つ第１の割り溝（１９）終
端から前記端子（６）（７）側に向って、１８０°以内
で前記端子（６）（７）の取付け部の手前までの所定角
度（θ）（略１３５°）に設けるもので、前記第１及び
第２の割り溝（１９）（２０）によって各受け口部
（４）の開口端部に締め付けバンド（２１）を形成して
いる。
【００１１】また、前記バンド（２１）の端部外面に可
動リブ（２２）を一体形成すると共に、前記可動リブ
（２２）に第１の割り溝（１９）を挾んで対向させる固
定リブ（２３）を受け口部（４）の開口端部に一体成形
し、対向する各リブ（２２）（２３）に軸孔（２４）
（２５）を介して挿入する締め付けボルト（２６）を、
このボルト（２６）に融着させるナット（２７）によ
り、固定リブ（２３）に可動リブ（２２）を接近させる
ように締め付け、前記バンド（２１）の内面を管（３）
の外面に締め付け、受け口部（４）に端部を差し込んだ
管（３）の軸方向の移動及び回転を規制し、管（３）の
抜け止めを行うように構成している。
【００１２】本実施例は上記の如く構成するもので、図
２に示すようにＥＦコントローラ（８）の電源コード
（１４）の電源プラグ（１４ａ）を電源に接続させると
共に、管（３）の端部を差し込んだＥＦ継手（１）の受
け口部（４）の開口端面（４ａ）の端子（６）（７）に
ＥＦコントローラ（８）の接続コード（１６）の接続コ
ネクタ（１６ａ）を接続させ、また接続コネクタ（１６
ａ）と反対側でボルト・ナット（２６）（２７）を介し
てバンド（２１）内面を管（３）の外面に締め付けて、
管（３）の抜け止めを行った後、スタートボタン（１
０）をオン操作することにより、ＥＦコントーラ（８）
によってＥＦ継手（１）の種類に応じた電力量が電熱線
（５）に供給され、電熱線（５）埋め込み範囲の継手
（１）の受け口部（４）内面とそれに対応する管（３）
の外面の樹脂が加熱溶融され、管（３）と継手（１）の
融着が自動的に行われるものである。
【００１３】尚、融着完了後は締め止め部（１８）の機
能は終わるため、ボルト・ナット（２６）（２７）は取
外してバンド（２１）の締め付けを解除した状態で放置
することができると共に、受け口部（４）の外表面に突
出するリブ（２２）（２３）が配管の支障となる場合に
はこのリブ（２２）（２３）を切り落してもよい。
【００１４】前記バンド（２１）の締め付けを継手
（１）への電力供給側と反対側の継手（１）外周側で行
うため、締め付け作業を簡単に行うことができると共
に、各端子（６）（７）を避けて設ける必要があるバン
ド（２１）の長さを最大限長く形成することができ、高
い締め付けトルクを得ることができるものである。
【００１５】
【発明の効果】本発明は、以上説明したように構成され
ているので、以下に記載されるような効果を奏する。
【００１６】管（３）端部を差し込む継手（１）の受け
口部（４）の開口端部に、内面を管（３）外面に締め付
け可能な締め止め部（１８）を一体成形したので、専用
の治具を用いることなく継手（１）の締め止め部（１
８）で管（３）の抜け止めを行うことができ、配管業者
が継手の種類やサイズに対応した治具を保有し、且つ、
持ち運ぶ必要がなくなり、経済的及び労力的に負担を軽
減できると共に、融着作業も従来に比べて簡単に行うこ
とができるようになる。
【００１７】また、前記締め止め部（１８）は管（３）
と継手（１）の隙間からの溶融樹脂の流出並びに放熱を
抑えるので、融着品質の向上も同時に図ることができ
る。
【図面の簡単な説明】
【図１】本発明に係る締め止め部の斜視図。
【図２】融着方法の実体図。
【図３】受け口部の断面図。
【図４】締め止め部の右側面図。
【図５】締め止め部の底面図。
【図６】締め止め部の断面図。
【図７】締め止め部の断面図。
【図８】締め止め部の断面図。
【図９】締め止め部の正面図。
【符号の説明】
（１） ＥＦ継手 （３） 管 （４） 受け口部 （５） 電熱線 （１８） 締め止め部

Claims (1)

    【特許請求の範囲】
  1. 【請求項１】 継手の管との接触面に電熱線を埋設し、
    電熱線に電力を供給することによって樹脂を加熱溶融さ
    せ、管と継手の融着を行うエレクトロフュージョン継手
    において、管端部を差し込む継手の受け口部の開口端部
    に、内面を管外面に締め付け可能な締め止め部を一体成
    形したことを特徴とするエレクトロフュージョン継手。
JP7138541A 1995-05-11 1995-05-11 エレクトロフュージョン継手 Expired - Fee Related JP2714773B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7138541A JP2714773B2 (ja) 1995-05-11 1995-05-11 エレクトロフュージョン継手

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7138541A JP2714773B2 (ja) 1995-05-11 1995-05-11 エレクトロフュージョン継手

Publications (2)

Publication Number Publication Date
JPH08303674A true JPH08303674A (ja) 1996-11-22
JP2714773B2 JP2714773B2 (ja) 1998-02-16

Family

ID=15224572

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7138541A Expired - Fee Related JP2714773B2 (ja) 1995-05-11 1995-05-11 エレクトロフュージョン継手

Country Status (1)

Country Link
JP (1) JP2714773B2 (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05322089A (ja) * 1992-05-15 1993-12-07 Osaka Gas Co Ltd 電熱体入り管継手

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05322089A (ja) * 1992-05-15 1993-12-07 Osaka Gas Co Ltd 電熱体入り管継手

Also Published As

Publication number Publication date
JP2714773B2 (ja) 1998-02-16

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