JPH04171392A - 電気融着管継手 - Google Patents

電気融着管継手

Info

Publication number
JPH04171392A
JPH04171392A JP2298429A JP29842990A JPH04171392A JP H04171392 A JPH04171392 A JP H04171392A JP 2298429 A JP2298429 A JP 2298429A JP 29842990 A JP29842990 A JP 29842990A JP H04171392 A JPH04171392 A JP H04171392A
Authority
JP
Japan
Prior art keywords
pipe joint
pipe
joint body
heating wire
locking member
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
JP2298429A
Other languages
English (en)
Inventor
Yoichiro Ozaki
尾崎　洋一郎
Hiroshi Shimizu
博 清水
Junichi Kuratani
倉谷　純一
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.)
Osaka Gas Co Ltd
Original Assignee
Osaka Gas Co Ltd
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 Osaka Gas Co Ltd filed Critical Osaka Gas Co Ltd
Priority to JP2298429A priority Critical patent/JPH04171392A/ja
Publication of JPH04171392A publication Critical patent/JPH04171392A/ja
Pending 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
    • 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
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/565—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits involving interference fits, e.g. force-fits or press-fits
    • 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
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • 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
    • B29C66/52296—Joining tubular articles involving the use of a socket said socket comprising sealing elements, e.g. gaskets
    • 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
    • B29C66/73—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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • 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
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91441—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time
    • B29C66/91443—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile
    • 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
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91441—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time
    • B29C66/91443—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile
    • B29C66/91445—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile by steps
    • 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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/959—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables
    • B29C66/9592—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables in explicit relation to another variable, e.g. X-Y diagrams

Landscapes

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

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、電気融着管継手に関し、もつと詳しくは、熱
可塑性合成樹脂製管と融着して気密に接続される電気融
着管継手に関する。
従来の技術 従来から、電気融着管継手を用いて熱可塑性合成樹脂製
管を接続するに当っては、その電気融着管継手の熱可塑
性合成樹脂製管継手本体の接続孔内に前記管を挿入した
状態とし、これらの管継手本体と管とを、クランプ治具
で相互に変位しないように固定し、この状態で管継手本
体に埋込まれている加熱線に電力を供給して管継手本体
と管とを熱融着して気密に接続している。
発明が解決しようとする課題 このような先行技術では、クランプ治具を必要とするの
で、作業性が悪いとともに、管が地中に埋設されている
状態では、管継手の接続のために大きな掘削孔を形成し
なければならず、この観点からもまた、作業性が悪い。
さらに丈な、管継手本体の接続孔の内面とその接続孔に
挿入される管の外周面との間の間隔が存在しており、こ
の間隔を周方向に均一となるようにクラン１治具によっ
て管継手本体と管とを相互に固定した状態とすることは
困難である。もしもこのような間隔が周方向に不均一の
ままで、加熱線によって熱融着を行うと、融着性能のば
らつきが生じ、信頼性が低下する− 本発明の目的は、作業性が良好であり、しかも熱融着接
合部分の信頼性を向上することができるようにした電気
融着管継手を提供することである。
課題を解決するための手段 本発明は、熱可塑性合成樹脂製管継手本体と、管継手本
体の内部または接続されるべき熱可塑性合成樹脂製管が
挿入される接続孔の内面付近に設けられる加熱線と、 管継手本体に設けられ、前記管を外囲し、加熱線の熱に
よって管の外表面を締付けて抜止めをする形状記憶合金
から成る大略的に環状の係止部材とを含むことを特徴と
する電気融着管継手である６作　　用 本発明に従えば、熱可塑性合成樹脂製管継手本体には加
熱線が設けられているとともに、係止部材が設けられて
いる。この係止部材は、形状記憶合金から成り、接続さ
れるべき熱可塑性合成樹脂製管を大略的に環状に外囲し
、加熱線に電力が供給されて加熱されることによって、
管の外周面を締付ける。これによって管継手本体と管と
の相対的な位置が固定された状態で、管継手本体と管と
が相互に熱融着接合される。したがって作業性が極めて
容易であり、前述の先行技術におけるクランプ治具など
が不要であり、したがって管がたとえば地中に埋設され
ているとき、大きな掘削孔を形成する必要がない。
しかもまた係止部材は、大略的に環状であり、したがっ
て管継手本体の接続孔の内面と管の外周面との間の間隔
を周方向に均一にした状態で、上述のように熱融着接合
を行うことができる。これによって融着性能のばらつき
が生じることを防ぎ、熱融着接合の信頼性を向上するこ
とができる。
実施例 第１図は本発明の一実施例の熱融着接合された電気融着
管継手１と管２とを示す断面図であり、第２図はその電
気融着管継手１を用いて管２を接続する作業を説明する
ための図である。これらの図面を参照して、電気融着管
継手１は、たとえばポリエチレンなどのような熱可塑性
合成樹脂製管継手本体３と、その管継手本体３に設けら
れるコ、イル状のニクロム線などから成る加熱線４，５
と、管２，２ａを外囲する大略的に環状の係止部材１２
．１３とを含む。管２は、たとえばポリエチレンなどの
熱可塑性合成樹脂製である。加熱線４゜５は、管継手本
体３の肉厚の内部に設けられていて６よく、また接続さ
れるべき管２，２ａの端部が挿入される接続孔７，８の
内面付近に部分的に露出して、または露出しないで設け
られていてもよい。加熱線４．５は、単一本の素線から
成り、その両端部は、管継手本体３に固定されている端
子９．１０に接続される。端子９，１０に電源回路１１
から電力が供給されることによって、加熱線４，５はジ
ュール熱を発生し、管継手本体３とそれに接続されるべ
き管２，２ａを熱溶融する。
管継手本体３にはまた、加熱線４，５よりも軸線方向外
方寄りに大略的に環状の係止部材１２゜１３がそれぞれ
設けられる。
第３図はこの係止部材１３の断面図であり、第４図はそ
の係止部材１２の正面図である。この係止部材１２は、
参照符１４で示されるように周方向に部分的に分断され
ており、これによって径が変化可能とされる。この係止
部材１２は、形状記憶合金から成り、管継手本体３と管
２との熱融着接合時の温度、たとえば２００〜２５０℃
未満の低い温度、たとえば１００℃で、その内径が縮小
して管２を締付けるように変形する。係止部材１２は、
−旦、径が縮小した後、温度がたとえば常温に戻った後
には、その径が大きくなって復帰するように変形可能で
あってもよいけれども、常温の状態で径が縮小されたま
まに保たれてもよい。
係止部材１２は、管継手本体３の接続孔７に臨んで形成
された環状の凹所１５に嵌込まれている。
他の実施例として、この係止部材１２は、管継手本体３
内に埋込まれており、加熱線４の発熱によって管継手本
体３が軟化し、しかもこの係止部材１２が加熱されるこ
とによって、前述のように縮径されて管２を締付けるよ
うにしてもよい。係止部材１２は、半径方向内方に突出
した抜止め用爪１６を有し、この爪１６は、半径方向内
方に突出した立上り部１６ａと傾斜した傾斜部１６ｂと
を有し、係止部材１２が縮径することによって爪１６が
管２の外表面に当接し、また食込み、このことによって
、管２の矢符１７方向の抜止めをする。
もう１つの係止部材１３は、本件管継手１の対称面１８
に関して第１図および第２図の左右対称に設けられる。
管継手本体３にはまた、係止部材１２．１３よりも軸線
方向外方側に環状凹所１８，１９が形成され、各凹所１
８，１９には耐熱性ゴムなどから成る０リング２０．２
１が嵌込まれる。このＯリング２０．２１は、管２，２
ａの外周面に弾発的に当接し、したがって管２，２ａ内
に輸送されるガスなどの流体の漏洩を防ぐとともに、外
部からごみなどが係止部材１２．１３寄りに、すなわち
管継手本体３の軸線方向内方に、入り込むことを防ぐ。
０リング２０は、第５図に示されるように自然状態では
真円であり、その軸直角断面は円形であり、このことは
もう１つの０リング２１に関しても同様である。
管継手１を用いて管２，２ａを接続するに当っては、管
２．２ａの端部を管継手本体３の接続孔７．８内に挿入
した状態とし、端子９．１０に電源回路１１を接続して
加熱線４．５に電力を供給する。これによって加熱線４
，５は、第２図（１）に示される常温の状態から、ジュ
ール熱によって昇温される。この加熱線４，５が昇温し
ている状態において、管継手本体３が僅かに軟化した状
態で、または軟化していない状態で、係止部材１２゜１
３が約１００℃にまで昇温されると、これらの係止部材
１２．１３は縮径し、管２，２ａの外周面に当接し、こ
れによって係止部材１２の爪１６の働きによって管２の
抜止めを防止するとともに、管継手本体３の接続孔７の
内面と管２の外周面との間の間隔δ（第３図参照）を周
方向に均一とし、したがって接続孔７の軸線と、管２の
軸線とが一致した状態に保たれる。このことは、もう１
つの管２ａに関しても同様である。
加熱線４，５がさらに昇温されて約２５０℃になること
によって、その加熱線４，５付近で管継手本体３と管２
，２ａとが溶融して第１図に示される熱融着接合された
状態となる。この熱融着接合時における管継手本体３の
接続孔７．８の内面付近の軸線方向の温度分布は、第２
図（２）で示された状態となっている。係止部材１２．
１３は管２．２ａを把持した状態を保ち、こうして管継
手３の接続孔７，８の共通な一直線上に管２，２ａの軸
線が一致した状態が係止部材１２．１３によって保たれ
たままで、管継手本体３と管２．２ａとの熱融着接合が
上述のように達成される。０リング２０．２１は、管２
．２ａを接続のために管継手本体３の接続孔７，８内に
挿入するときに、管継手本体３の接続孔７．８内にごみ
などが侵入することを防ぐ。
熱融着接合が終了した後には、加熱線４．５に供給する
電力を遮断し、管継手本体３と管２，２ａとを常温にま
で冷却して硬化させる。
本発明は、エルボおよびティー、さらにはその他の形状
を有する管継手に関して、広範囲に実施することができ
る。
発明の効果 以上のように本発明によれば、加熱線に電力を供給して
係止部材を加熱することによって、管継手本体に設けら
れている大略的に環状の係止部材は、管の外周面を締付
けて抜止めを行い、こうして管継手本体と管とを相互に
固定した状態で、加熱線による管継手本体と管との熱融
着接合が可能となる。したがって作業性が向上され、前
述の先行技術におけるクランプ治具が不要であり、しか
もまた管が地中に埋設されているとき、その掘削孔を大
きく形成する必要がなくなる。さらにまた係止部材は大
略的に環状であり、管継手本体の接続孔の内面と管の外
周面との間の間隙を周方向に均一として融着性能のばら
つきを防ぎ、熱融着接合の信頼性の向上を図ることがで
きる。
【図面の簡単な説明】
第１図は本発明の一実施例の熱融着接合が行われた状態
を示す断面図、第２図はその熱融着接合を行うときの状
態を示す図、第３図は係止部材１２の断面図、第４図は
係止部材１２の正面図、第５図はＯリング２０の正面図
である。 １・・・電気融着管継手、２，２ａ・・・管、３・・・
管継手本体、４．５・・・加熱線、７，８・・・接続孔
、１１・・・電源回路、１２．ｊ３・・・係止部材、２
０．２１・・・Ｏリング 代理人　　弁理士　画数　圭一部 第３図 第４図 第５図

Claims (1)

  1. 【特許請求の範囲】 熱可塑性合成樹脂製管継手本体と、 管継手本体の内部または接続されるべき熱可塑性合成樹
    脂製管が挿入される接続孔の内面付近に設けられる加熱
    線と、 管継手本体に設けられ、前記管を外囲し、加熱線の熱に
    よつて管の外表面を締付けて抜止めをする形状記憶合金
    から成る大略的に環状の係止部材とを含むことを特徴と
    する電気融着管継手。
JP2298429A 1990-11-02 1990-11-02 電気融着管継手 Pending JPH04171392A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2298429A JPH04171392A (ja) 1990-11-02 1990-11-02 電気融着管継手

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2298429A JPH04171392A (ja) 1990-11-02 1990-11-02 電気融着管継手

Publications (1)

Publication Number Publication Date
JPH04171392A true JPH04171392A (ja) 1992-06-18

Family

ID=17859592

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2298429A Pending JPH04171392A (ja) 1990-11-02 1990-11-02 電気融着管継手

Country Status (1)

Country Link
JP (1) JPH04171392A (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04258594A (ja) * 1991-02-14 1992-09-14 Sekisui Chem Co Ltd 電気融着継手
US5921587A (en) * 1994-06-27 1999-07-13 Alois Gruber Ges.M.B.H. Fusion jointing of plastic pipes
US6375226B1 (en) * 1996-11-20 2002-04-23 Uponor Innovation Ab Pipe connector having mechanical and fusion connections
KR100586798B1 (ko) * 1999-12-18 2006-06-08 주식회사 케이티 통신구용 열융착 지수판
ITUB20152378A1 (it) * 2015-07-08 2017-01-08 Maristella Ferrari Sistema di saldatura ad elettrofusione con tenuta per tubazioni
EP4414149A1 (en) * 2023-02-08 2024-08-14 The Boeing Company Apparatuses, tacking sticks, and systems for tacking workpieces in composite manufacturing and methods associated therewith

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04258594A (ja) * 1991-02-14 1992-09-14 Sekisui Chem Co Ltd 電気融着継手
US5921587A (en) * 1994-06-27 1999-07-13 Alois Gruber Ges.M.B.H. Fusion jointing of plastic pipes
US6156144A (en) * 1994-06-27 2000-12-05 Alois Gruber Ges.M.B.H. Method for fusion jointing of plastic pipes
US6375226B1 (en) * 1996-11-20 2002-04-23 Uponor Innovation Ab Pipe connector having mechanical and fusion connections
KR100586798B1 (ko) * 1999-12-18 2006-06-08 주식회사 케이티 통신구용 열융착 지수판
ITUB20152378A1 (it) * 2015-07-08 2017-01-08 Maristella Ferrari Sistema di saldatura ad elettrofusione con tenuta per tubazioni
EP4414149A1 (en) * 2023-02-08 2024-08-14 The Boeing Company Apparatuses, tacking sticks, and systems for tacking workpieces in composite manufacturing and methods associated therewith

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