JP2530768B2 - 電気融着継手と金属管との接続構造 - Google Patents

電気融着継手と金属管との接続構造

Info

Publication number
JP2530768B2
JP2530768B2 JP3134053A JP13405391A JP2530768B2 JP 2530768 B2 JP2530768 B2 JP 2530768B2 JP 3134053 A JP3134053 A JP 3134053A JP 13405391 A JP13405391 A JP 13405391A JP 2530768 B2 JP2530768 B2 JP 2530768B2
Authority
JP
Japan
Prior art keywords
electric fusion
joint
resin
pipe
peripheral surface
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 - Fee Related
Application number
JP3134053A
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English (en)
Other versions
JPH04362395A (ja
Inventor
勉 祖母井
英樹 影山
秀世 吉川
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.)
Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Priority to JP3134053A priority Critical patent/JP2530768B2/ja
Publication of JPH04362395A publication Critical patent/JPH04362395A/ja
Application granted granted Critical
Publication of JP2530768B2 publication Critical patent/JP2530768B2/ja
Anticipated expiration legal-status Critical
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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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C65/561—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using screw-threads being integral at least to one 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • 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
    • B29C66/01—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
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap 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
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1284—Stepped joint cross-sections comprising at least one butt joint-segment
    • B29C66/12841—Stepped joint cross-sections comprising at least one butt joint-segment comprising at least two butt joint-segments
    • 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
    • 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
    • B29C66/52298—Joining tubular articles involving the use of a socket said socket being composed by several elements
    • 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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • 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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • 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
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/748—Machines or parts thereof not otherwise provided for
    • B29L2031/7506—Valves

Landscapes

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

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、電気融着継手と金属管
との接続構造に関するものである。
【０００２】
【従来の技術】従来より、電気融着によって、樹脂管と
金属管とを接続する場合、例えば、特開昭６２−４９８
８号公報に示すような管継手によって行われていた。
【０００３】すなわち、この管継手は、樹脂製継手本体
の一端側に、樹脂管の端部が挿入可能となされるととも
に、通電によって発熱するコイルが埋設されている。ま
た、他端側に、金属管の端部に形成された螺子部に螺合
可能なナットがインサート加工されている。
【０００４】この管継手によると、樹脂管と管継手との
接続は電気融着によって行われ、金属管と管継手との接
続は、螺合によって行われることとなる。
【０００５】
【発明が解決しようとする課題】しかし、上記従来の管
継手の場合、金属管の螺子切り、螺子込み等の施工ばら
つきによって漏水を生じるといった不都合があった。
【０００６】本発明は、係る実情に鑑みてなされたもの
で、施工のばらつきを生じることなく、電気融着継手と
金属管とを確実に接続することのできる接続構造を提供
することを目的としている。
【０００７】
【課題を解決するための手段】上記課題を解決するため
の本発明の電気融着継手と金属管との接続構造は、管体
が挿入可能となされるとともに、通電によって発熱する
コイルが埋設された接続部が形成されてなる電気融着継
手と、金属管との接続構造であって、金属管の端部外周
面には、凹凸が設けられるとともに、接着性樹脂が溶着
された挿入部が形成されてなり、電気融着継手の接続部
に金属管の挿入部が挿入された状態でコイルに通電する
ことによって、電気融着継手の接続部内周面の樹脂と、
金属管の挿入部外周面の接着性樹脂とが溶融一体化され
たものである。
【０００８】
【作用】本発明の電気融着継手と金属管との接続構造に
よると、電気融着継手の接続部に金属管の挿入部を挿入
した状態でコイルに通電することによって、電気融着継
手の接続部内周面の樹脂と、金属管の挿入部外周面の接
着性樹脂とが溶融一体化し、この溶融一体化した樹脂が
挿入部の凹凸部分に噛み込んで、電気融着継手と金属管
とが強固に接続されることとなる。
【０００９】
【実施例】以下、本発明の一実施例を図面を参照して説
明する。
【００１０】図１は、電気融着継手１と金属製蛇口部材
２との接続構造の全体構成の概略を示している。
【００１１】すなわち、この接続構造は、電気融着継手
１の接続部１１に金属製蛇口部材２の挿入部２１が挿入
された状態でコイル１２に通電することによって、電気
融着継手１の接続部１１内周面の樹脂と、金属製蛇口部
材２の挿入部２１外周面の接着性樹脂２２とが溶融一体
化されたものである。
【００１２】電気融着継手１は、円筒状に形成された継
手本体１０の両端部に、樹脂管３の端部３０を嵌合でき
るようになされた接続部１１が形成されている。この接
続部１１の内周壁面には、通電によって発熱するコイル
１２が埋設されている。また、継手本体１０の内周壁面
には、両端部から挿入される樹脂管３の貫通を抑止する
ストッパ１３が突設されている。
【００１３】そして、この電気融着継手１は、接続部１
１に埋設されたコイル１２の発熱によって、該コイル１
２周縁の樹脂が溶融するようになされている。すなわ
ち、接続部１１に樹脂管３の端部３０を挿入してコイル
１２に通電することによって、接続部１１の内周壁面と
樹脂管３の外周壁面とが溶融して融着することとなる。
そのため、コイル１２は、接続部１１の全体を周回して
埋設され、融着による接合面積を充分に確保することが
できるようになされている。このコイル１２は、その端
部が、接続部１１の外周に突設された通電ターミナル１
４に配線されており、該通電ターミナル１４から通電で
きるようになされている。
【００１４】金属製蛇口部材２は、図２に示すように、
その基端部に挿入部２１が形成されている。この挿入部
２１は、円筒状に形成されてなり、その外周面全体に渡
って周方向に溝が設けられ複数の凹凸が形成されてい
る。また、この挿入部２１の凹凸部分には接着性樹脂２
２（例えば、三井石油化学社製 変性ポリエチレン 商
品名 アドマーＮＲ１０６）が溶着されている。この溶
着は、あらかじめ、金属製蛇口部材２を１８０℃以上に
加熱し、接着性樹脂２２を塗布して溶融固着させること
によって溶着される。この接着性樹脂２２の溶着厚みと
しては、最大で１mm程度となるように溶着される。そし
て、この接着性樹脂２２が溶着された状態で、挿入部２
１の外径は、電気融着継手１の接続部１１の内径とほぼ
同一径となされ、該挿入部２１を接続部１１に挿入可能
となされている。
【００１５】このようになる金属製蛇口部材２を、電気
融着継手１によって、樹脂管３に接続する場合は、ま
ず、電気融着継手１の一方の接続部１１に樹脂管３の端
部３０を挿入するとともに、他方の接続部１１に金属製
蛇口部材２の挿入部２１を挿入し、各部材の位置決めを
する。
【００１６】そして、通電ターミナル１４を通じてコイ
ル１２に通電する。
【００１７】すると、樹脂管３側では、接続部１１の内
周面の樹脂と樹脂管３の端部３０の外周面の樹脂とが溶
融一体化して電気融着継手１と樹脂管３とが接続される
こととなる。
【００１８】また、金属製蛇口部材２側では、接続部１
１の内周面の樹脂と金属製蛇口部材２の挿入部２１の外
周面の接着性樹脂２２とが溶融一体化し、この溶融一体
化した樹脂が挿入部２１の凹凸部分に噛み込んで、電気
融着継手１と金属製蛇口部材２とが強固に接続されるこ
ととなる。
【００１９】なお、本実施例では、金属製蛇口部材２と
電気融着継手１との接続構造を示しているが、これに限
定されるものではなく、上記金属製蛇口部材２に示す挿
入部２１を備えたものであれば、銅管、鋼管、インサー
ト継手等の各種金属継手および金属管と電気融着継手１
とを接続することができる。
【００２０】また、図３に示すように、従来からある螺
合構造となされた金属管４を電気融着継手１と接続する
場合、一方にこの金属管４の螺子部４１と螺合可能な螺
子部２３を備え、他方に挿入部２１を備えた金属製接続
部材２４を使用することができる。
【００２１】さらに、本実施例では、電気融着継手１と
金属製蛇口部材２とを接続しているが、樹脂管３の端部
３０が電気融着継手１の接続部１１と同様に構成されて
いる場合は、樹脂管３の端部３０と金属製蛇口部材２と
を直接的に接続することができる。
【００２２】
【発明の効果】以上述べたように、本発明によると、電
気融着継手の接続部内周面の樹脂と、金属管の端部外周
面の接着性樹脂とが溶融一体化し、この溶融一体化した
樹脂が挿入部の凹凸部分に噛み込んで、電気融着継手と
金属管とが強固に接続されることとなるので、施工のば
らつきを生じることなく樹脂管と金属管とを簡単に接続
することができる。
【図面の簡単な説明】
【図１】電気融着継手と金属製蛇口部材との接続構造の
全体構成の概略を示す断面図である。
【図２】金属製蛇口部材の全体構成の概略を示す部分破
断図である。
【図３】電気融着継手と金属製接続部材との接続構造の
全体構成の概略を示す断面図である。
【符号の説明】
１ 電気融着継手 １１ 接続部 １２ コイル ２ 金属製蛇口部材（金属管） ２１ 挿入部 ２２ 接着性樹脂 ３ 樹脂管（管体）

Claims (1)

    (57)【特許請求の範囲】
  1. 【請求項１】 管体が挿入可能となされるとともに、通
    電によって発熱するコイルが埋設された接続部が形成さ
    れてなる電気融着継手と、金属管との接続構造であっ
    て、金属管の端部外周面には、凹凸が設けられるととも
    に、接着性樹脂が溶着された挿入部が形成されてなり、
    電気融着継手の接続部に金属管の挿入部が挿入された状
    態でコイルに通電することによって、電気融着継手の接
    続部内周面の樹脂と、金属管の挿入部外周面の接着性樹
    脂とが溶融一体化されたことを特徴とする電気融着継手
    と金属管との接続構造。
JP3134053A 1991-06-05 1991-06-05 電気融着継手と金属管との接続構造 Expired - Fee Related JP2530768B2 (ja)

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JP3134053A JP2530768B2 (ja) 1991-06-05 1991-06-05 電気融着継手と金属管との接続構造

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JPH04362395A JPH04362395A (ja) 1992-12-15
JP2530768B2 true JP2530768B2 (ja) 1996-09-04

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