JPH06331088A - 電気融着式ヘッダー継手 - Google Patents

電気融着式ヘッダー継手

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Publication number
JPH06331088A
JPH06331088A JP5119549A JP11954993A JPH06331088A JP H06331088 A JPH06331088 A JP H06331088A JP 5119549 A JP5119549 A JP 5119549A JP 11954993 A JP11954993 A JP 11954993A JP H06331088 A JPH06331088 A JP H06331088A
Authority
JP
Japan
Prior art keywords
branch
header
fusion
portions
electric fusion
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.)
Pending
Application number
JP5119549A
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English (en)
Inventor
Hiroshi Oya
博 大矢
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.)
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
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Filing date
Publication date
Application filed by Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP5119549A priority Critical patent/JPH06331088A/ja
Publication of JPH06331088A publication Critical patent/JPH06331088A/ja
Pending legal-status Critical Current

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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
    • 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
    • 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
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/70—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
    • 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
    • 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
    • B29C66/7394—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 thermoset
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/24—Pipe joints or couplings
    • B29L2031/246—T-joints

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】 呼び径の異なる分岐管を接続しようとする場
合でも融通性よく簡単に融着できると共に全体的にコン
パクトにした電気融着式ヘッダー継手を提供すること。 【構成】 本発明は、主管接続部を有する胴体と、複数
の分岐管を接続するための枝部とを有する熱可塑性樹脂
からなるヘッダーにおいて、前記それぞれの枝部の内径
を胴体側を小径とし、先端側に向けて大径となる少なく
とも２段の接続部とし、この接続部の異径内周面にそれ
ぞれ独立して電熱線を設けた電気融着式ヘッダー継手で
ある。

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は主に給水・給湯配管にお
いて、ヘッダー配管工法に使用するヘッダー継手（以下
単にヘッダーという）に関し、特に能率的に配管作業が
行える電気融着式ヘッダーに関するものである。
【０００２】
【従来の技術】従来、樹脂製（熱可塑性樹脂で例えばポ
リエチレンやポリブテンを指す。以下同様）ヘッダーと
しては図４に示すものがある。ヘッダー10は、胴体11
と、主管を接続するための主管接続部12と、複数の分岐
管を接続するための枝部13ａ，13ｂ，13ｃ…とからなっ
ている。ここでヘッダー10と分岐樹脂管40又は50ａ，50
ｂを接続しようとすると、従来からある電気融着継手20
又は30ａ，30ｂを用意して、これらを介して電気融着接
続を行う。即ち、枝部13ａについていえば、異なる径の
枝部と分岐管を接続するので、例えば呼び径13mmの枝部
13ａと呼び径10mmの分岐管50ａを径違いソケット30ａの
両受口にそれぞれ挿入し、両端コネクタピン32に図示せ
ぬコントローラから通電して電熱線31を発熱させ両者を
融着するというものである。尚、呼び径が同じときはソ
ケット20を用いて同様に融着接続できる。ところが、こ
のヘッダーでは融着接合面となる各枝部の外面が紫外線
による劣化や取扱い上の傷を受けやすく、いずれにして
も外面を薄く（0.2mm程度）削り落す必要がある。しか
し、ヘッダーの場合複数の枝部が並んでいるため表面を
削るのは困難な作業であるし、逆に切削作業を容易にす
るため枝間隔を大きくするとヘッダー全長が大きくなり
広い配管スペースが必要となるという不都合がある。
【０００３】そこで、特開平２−253084号では、図５に
示すようにヘッダーＨの各枝部Ｂ，Ｃ，Ｄ，Ｅに一体的
に電気融着継手構造Ｆを備えることが開示されている。
このヘッダーによれば直接分岐管を枝部に電気融着でき
るし、枝部側の融着面を削るような作業は必要でなくな
る。
【０００４】
【発明が解決しようとする課題】しかしながら、呼び径
の異なる枝部と分岐管とを接続する場合、あるいは現場
で急にその必要が生じた場合、上記のヘッダーでは少な
くとも複数種類の呼び径にあった専用の枝部、即ち電気
融着接続部が備わっている必要がある。そうでなければ
前述の例のように径違いソケット等を用意し面倒な作業
が必要となる。また、ヘッダーの場合、後面や側面には
それぞれ壁や枝部が隣接しているのでコネクターピンは
前面に並列配置した方がコンパクトにもなるし、作業性
の面でも好ましい。上記特開平２−253084号にあるヘッ
ダーはこれらの点で考慮がなく、融通性や作業性が悪い
ものであった。本発明は、このような問題を解決するも
ので、呼び径の異なる分岐管を接続しようとする場合で
も融通性がよく簡単に融着ができ、なおかつ枝部の長さ
と間隔を比較的小とし全体的にコンパクトにした電気融
着式ヘッダーを提供することを目的とする。
【０００５】
【課題を解決するための手段】本発明は、主管接続部を
有する胴体と、複数の分岐管を接続するための枝部とを
有する熱可塑性樹脂からなるヘッダーにおいて、前記そ
れぞれの枝部の内径を胴体側を小径とし、先端側に向け
て大径となる少なくとも２段の接続部とし、この接続部
の異径内周面にそれぞれ独立して電熱線を設けた電気融
着式ヘッダー継手である。
【０００６】上記の接続部としては、例えば小径側の接
続部は呼び径10mmの分岐管に対応する内径とし、その次
に呼び径13mmに対応する内径の２段として２種類の分岐
管に対応できるようにすると良い。無論呼び径13mm用の
次に20mm用等の接続部を形成し３段の接続部としてもよ
い。また各接続部の内周面に埋設する電熱線は２条巻き
として一対のコネクターピンが枝部の前面に隣同士に並
んで配置されるようにすることが望ましい。
【０００７】
【作用】上記の通り各枝部には、少なくとも２段の異な
った電気融着接続部があるので１つの枝部に対して異な
る呼び径の分岐管、つまり２つの管に対応できる態勢と
なっており現場で臨機応変にどちらでも融着することが
できる。また、各接続部に埋設する電熱線はそれぞれ独
立して２条巻きとし、一対のコネクターピンを一カ所に
並列して設けたので、従来コネクターピン付近で電熱線
との接続に必要な長さが半分ですみ、枝部の長さを短く
できる。そしてこれらはヘッダーの前面に並列している
のでコントローラ側のコネクターも差し込み操作しやす
いなど全般的に作業性が良くなる。
【０００８】
【実施例】以下、本発明の実施例を図面により説明す
る。図１〜図３は一実施例を示し、図１はヘッダーに分
岐管を接続した後の断面図。図２は電熱線の形態を示す
斜視図。図３は図１の正面図である。ヘッダー１は、中
空筒状の胴体２と、円筒状の主管接続部３及び複数の分
岐管を接続するための枝部４ａ，４ｂ，４ｃとがポリブ
テンにより一体形成されている。主管接続部３は胴部２
の一端側に開口し、枝部４ａ，４ｂ，４ｃはこれと直角
方向に開口するように並列して設けられている。枝部の
数はこれに限定されることはないが、主管接続部３から
流入した流体は直角方向に曲がり分配され分岐管を通っ
て目的部に供給される。なお、このヘッダーは図面の後
側に位置する建物の壁に取付け金具等によって固定され
る。枝部４ａ，４ｂ，４ｃの内部は分岐管の接続部とな
っている。例えば枝部４ｃについていえば、胴体側の内
径は比較的小径の呼び径、例えば10mmの分岐管の外径に
対応した径の接続部５ｃに形成し、その次の接続部６ｃ
は５ｃより大径の例えば13mmの分岐管に対応した径に形
成している。このように本実施例では呼び径10mm，又は
13mmの２段の接続部を連結して設けている。
【０００９】そして、この接続部の内周面には各々独立
して電熱線を埋設している。従って、接続部５ｃと６ｃ
を別個に融着することができる。この電熱線の巻き方等
の形態は、図２に示すように接続部５については２条巻
きした電熱線７を設け、一対のコネクターピン97を並列
に取り出している。また接続部６についても同様に２条
巻きした電熱線８を設け、コネクターピン98を並列に取
り出している。このような電熱線の巻き方をすれば、コ
ネクターピンが隣同士で近くに位置している分、コネク
ターピン接続に要する軸方向の長さが省略できるので、
２段の接続部を設けても比較的枝部の長さを短く抑える
ことができる。（従来のコネクターピンを両端に離して
設けたものよりは短くてすむ。）また、コネクターピン
が並んでいるのでコントローラ側のコネクターを差し込
み易いし融着状態を確認するインジケータ等も見やすい
などの利点がある。
【００１０】次に分岐管を融着接続する場合について説
明する。今、呼び径13mmの分岐管40と同じく10mmの分岐
管50ａ，50ｂをヘッダーに融着しようとすると、例えば
分岐管40は接続部６ｃへ挿入し、一方分岐管50ａは接続
部５ａへ、分岐管50ｂは接続部５ｂへそれぞれ挿入す
る。そしてヘッダーと各分岐管を適宜の固定手段で固定
し、コネクターピン97ａ，97ｂ，98ｃへコントローラの
コネクターをそれぞれ接続する。その後、電流を流して
電熱線を加熱して樹脂を溶融して両者を融着する。冷却
がすめば固定手段をはずして（あるいはそのままでも良
い）接続作業が完了する。
【００１１】本発明の他の実施例としては適宜考えられ
るが、例えば、２段の接続部でなくとも３段、４段の接
続部を形成してもよく、そのときの対応する呼び径は各
々の枝部によって変化させるなどすればよい。また、主
管接続部３についても本発明を実施して電気融着式の接
続部としてもよい。
【００１２】
【発明の効果】本発明のヘッダーによれば、１つの枝部
に対し、少なくとも呼び径の異なる２つの管に対してど
ちらでも融着することができ、現場で臨機応変に対応で
き、能率的な作業ができる。また、２管種対応の割りに
は枝部の長さは短く抑えることができ全体的にコンパク
トなヘッダーとなった。
【図面の簡単な説明】
【図１】 本発明の一実施例を示すヘッダーの断面図で
ある。
【図２】 電熱線の巻き方の例を示す斜視図である。
【図３】 図１の正面図である。
【図４】 従来のヘッダーの例を示す断面図である。
【図５】 従来の他のヘッダーの例を示す一部断面図で
ある。
【符号の説明】
１…ヘッダー本体 ２…胴部 ３…主管接続部 ４…枝部 ５…１段目の接続部 ６…２段目の接続部 ７…１段目の電熱線 ８…２段目の電熱線 97，98…コネクターピン 40，50…分岐管

Claims (1)

    【特許請求の範囲】
  1. 【請求項１】 主管接続部を有する胴体と、複数の分岐
    管を接続するための枝部とを有する熱可塑性樹脂からな
    るヘッダー継手において、前記それぞれの枝部の内径を
    胴体側を小径とし、先端側に向けて大径となる少なくと
    も２段の接続部とし、各接続部の異径内周面にそれぞれ
    独立して電熱線を設けたことを特徴とする電気融着式ヘ
    ッダー継手。
JP5119549A 1993-05-21 1993-05-21 電気融着式ヘッダー継手 Pending JPH06331088A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5119549A JPH06331088A (ja) 1993-05-21 1993-05-21 電気融着式ヘッダー継手

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5119549A JPH06331088A (ja) 1993-05-21 1993-05-21 電気融着式ヘッダー継手

Publications (1)

Publication Number Publication Date
JPH06331088A true JPH06331088A (ja) 1994-11-29

Family

ID=14764065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5119549A Pending JPH06331088A (ja) 1993-05-21 1993-05-21 電気融着式ヘッダー継手

Country Status (1)

Country Link
JP (1) JPH06331088A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001193886A (ja) * 1999-11-10 2001-07-17 Georg Fischer Haustechnik Ag 流体管接続のための配置
JP2019071948A (ja) * 2017-10-12 2019-05-16 三井化学産資株式会社 分岐ヘッダー
JP2023057646A (ja) * 2021-10-12 2023-04-24 東尾メック株式会社 ヘッダー構造体

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001193886A (ja) * 1999-11-10 2001-07-17 Georg Fischer Haustechnik Ag 流体管接続のための配置
JP2019071948A (ja) * 2017-10-12 2019-05-16 三井化学産資株式会社 分岐ヘッダー
JP2023057646A (ja) * 2021-10-12 2023-04-24 東尾メック株式会社 ヘッダー構造体

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