JP2002106778A - 樹脂管接続用継手 - Google Patents

樹脂管接続用継手

Info

Publication number
JP2002106778A
JP2002106778A JP2000304845A JP2000304845A JP2002106778A JP 2002106778 A JP2002106778 A JP 2002106778A JP 2000304845 A JP2000304845 A JP 2000304845A JP 2000304845 A JP2000304845 A JP 2000304845A JP 2002106778 A JP2002106778 A JP 2002106778A
Authority
JP
Japan
Prior art keywords
joint
stopper
resin pipe
resin
pipe
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
JP2000304845A
Other languages
English (en)
Other versions
JP4484186B2 (ja
Inventor
Takaaki Yoshii
崇朗 吉井
Shigeru Mizutani
茂 水谷
Hisayuki Yasuda
久幸 安田
Shuichi Morikawa
秀一 森川
Toshihiro Nanba
俊博 難波
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.)
Tokyo Gas Co Ltd
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
Tokyo 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 Hitachi Metals Ltd, Tokyo Gas Co Ltd filed Critical Hitachi Metals Ltd
Priority to JP2000304845A priority Critical patent/JP4484186B2/ja
Publication of JP2002106778A publication Critical patent/JP2002106778A/ja
Application granted granted Critical
Publication of JP4484186B2 publication Critical patent/JP4484186B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/02—Welded joints; Adhesive joints
    • F16L47/03—Welded joints with an electrical resistance incorporated in the joint
    • 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
    • B29C65/78—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
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/7832—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the overlap between the parts to be joined, e.g. the overlap between sheets, plates or web-like materials
    • 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
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/7835—Positioning the parts to be joined, e.g. aligning, indexing or centring by using stops
    • 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
    • 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
    • B29C66/01—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
    • B29C66/124—Tongue and groove joints
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12441—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • 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
    • B29C66/5224—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
    • 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
    • B29C66/52298—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
    • B29C66/63—Internally supporting the article during joining
    • B29C66/636—Internally supporting the article during joining using a support which remains in the joined object

Landscapes

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

Abstract

(57)【要約】 【課題】 通常は継手本体内にストッパーを装着してス
トッパー付き継手として樹脂管挿入時の押し力でも簡単
に外れることなく挿入量を適正に規制し、配管施工現場
での施工状況に必要に応じて作業者がストッパーを容易
に外すことも可能で、突き合わせ配管も容易に行うこと
ができる樹脂管接続用継手を提供する。 【解決手段】 接続樹脂管の端部外面を差し込んで接続
する円筒状に形成された継手本体１０と、前記継手本体
の樹脂管１５を受け入れる内周部に嵌入可能に形成さ
れ、樹脂管の端面に当接して管の差し込み深さが規制さ
れる樹脂製のストッパー２０とからなり、該ストッパー
は、前記継手本体の内周面に環状凹溝１６を形成し、該
環状凹溝に嵌合する円周上複数箇所に突出する嵌合突部
２２と、樹脂管の端面に当接する環状部２１と、該環状
部の一方の側面に設けた軸直角方向の折り曲げ溝２３と
からなることを特徴とする樹脂管接続用継手である。

Description

【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は樹脂管接続用継手に
関し、特に樹脂管を継手本体内に差し込む際の差し込み
深さを規制するストッパーに関するものである。
【０００２】
【従来の技術】従来、図４で示す特開平８−２７０８７
３号の図１で開示された、熱可塑性樹脂製継手本体の内
周面に電熱線が埋設され、中央部に熱可塑性樹脂管の差
し込み長さを規制するストッパーを継手本体と一体で形
成した電気融着継手がある。また別の例として、例えば
図５で示す同じく特開平８−２７０８７３号の図５で開
示された、継手本体内に環状溝を設けて別体のストッパ
ーの役目をするコア部材を嵌合装着した電気融着継手も
見られる。
【０００３】
【発明が解決しようとする課題】上記従来技術の内前者
では、継手本体とストッパーが一体であり、樹脂管と接
続作業時において、ストッパーをなしにすることが出来
ない。また上記従来技術の内後者では、継手本体内の環
状溝に別体のコア部材を嵌合してあり、この例の場合も
樹脂管と接続作業時においてストッパーの役目をするコ
ア部材を取り外すことが出来ず、ストッパーなしにする
ことが出来ない。また、取付け取り外しを出来るように
嵌合部を緩くした場合は、管差し込み時の管の押圧力で
ストッパーが容易に外れてしまい、ストッパーの役目を
果たさなくなる問題がある。
【０００４】従って上記従来技術では、継手本体を接続
樹脂管に挿通できないため、配管の最終接続において管
同士を突き合わせて継手接続するいわゆる突き合わせ配
管が行えない問題があった。また取り外し可能にしたも
のでは、接続作業時に管の差し込み力でストッパーが外
れてしまい、ストッパーの役目を果たさない問題があっ
た。本発明は上記の課題を解消して、通常は継手本体内
にストッパーを装着してストッパー付き継手として樹脂
管挿入時の押し圧力でも簡単に外れることなく挿入量を
適正に規制し、配管施工現場での施工状況に必要に応じ
て作業者がストッパーを容易に外すことも可能で、突き
合わせ配管も容易に行うことができる樹脂管接続用継手
を提供する。
【０００５】
【課題を解決するための手段】本発明の要旨は、接続樹
脂管の端部外面を差し込んで接続する円筒状に形成され
た継手本体と、前記継手本体の樹脂管を受け入れる内周
部に嵌入可能に形成され、樹脂管の端面に当接して管の
差し込み深さが規制される樹脂製のストッパーとからな
り、該ストッパーは、前記継手本体の内周面に環状凹溝
を形成し、該環状凹溝に嵌合する円周上複数箇所に突出
する嵌合突部と、樹脂管の端面に当接する環状部と、該
環状部の一方の側面に設けた折り曲げ溝とからなること
を特徴とする樹脂管接続用継手である。上記において、
前記継手本体の嵌合凹溝に前記ストッパーの嵌合突部が
嵌合すると共に、継手本体の内周面に前記ストッパーの
環状部外面が当接することを特徴とする樹脂管接続用継
手である。
【０００６】上記において、前記継手本体の内周部に
は、発熱によって樹脂管と溶融着する融着部が形成され
たことを特徴とする樹脂管接続用継手である。上記にお
いて、前記継手本体の環状凹溝の深さは、約１ｍｍ程度
で、環状凹溝の幅は約２．５ｍｍ程度に設けてある。ま
た上記において、ストッパーの嵌合突部の幅より環状部
の幅を大きく設けて、管を継手内へ挿入時の差し込み力
に対する安定性を増すように設けてある。
【０００７】
【作用】本発明は上記の構成であって、継手本体の内周
面に形成した環状凹溝にストッパーの嵌合突部が嵌合す
る。この嵌合突部は樹脂管端面に当接する環状部の外面
に円周上複数箇所あり、全周面ではなく、また環状部の
一方の面に折り曲げ溝があるので、この環状のストッパ
ーを折り曲げ溝から折り曲げて継手本体内周面に挿入で
き、本体内周面の環状凹溝に容易に装着することが出
来、また環状凹溝に装着したストッパーの折り曲げ溝部
を押すことで環状凹溝からストッパーを容易に取り外す
ことができる。
【０００８】接続作業時において、本体の環状凹溝に装
着されたストッパーに樹脂管が当接して、継手本体内へ
の管の差し込み量が規制されるが、樹脂管端部は環状に
ストッパーに当接するため、本体内から管の差し込み力
によってストッパーが外れるようなことがない。また、
環状凹溝に嵌合するストッパーの嵌合突部の幅より、環
状部の幅を大きくして本体内周面に環状部の外面を当接
させることで、より安定して本体内にストッパーが装着
される。従って通常は管の挿入量が規制されるストッパ
ー付の継手として使用され、また作業現場において、配
管の状況に応じて作業者が本体内のストッパーを取り外
すことが出来、管に継手を装通して突き合わせ配管接続
を行うことが出来る。
【０００９】
【発明の実施の形態】以下図面を参照しながら本発明の
実施例を詳細に説明する。図１は本発明の第１実施例を
示す樹脂管接続用電気融着チーズ継手を示し、図２は継
手本体とストッパーとの嵌合部拡大断面図で、図３はス
トッパーの正面図を示す。図１において、継手本体１０
は本管部１１と枝管部１２からなり、本管部１１は接続
する樹脂管の外周を挿通可能な円筒状内面に形成してあ
り、本管部１１の両端内周面に電熱線 を埋設して接続
樹脂管との融着部としてある。本管部１１の中央部から
枝管部１２が分岐しており、この枝管分岐口１３内を塞
がないようにストッパー２０，２０を設けて、本管部１
１の両端から差し込まれる樹脂管１５の差し込み量を規
制している。
【００１０】継手本体１０とストッパー２０の嵌合部を
示す図２において、継手本体１０内周面には環状凹溝１
６を設けてある。この環状凹溝１６の内周面１４からの
深さは０．３〜１ｍｍ程度で、継手本体の肉厚寸法に影
響しない程度の深さである。また環状凹溝の幅は２〜３
ｍｍ程度である。ストッパー２０は樹脂製で図２、図３
に示すように、接続樹脂管１５の端部に当接する環状部
２１と環状部から円周上外周面に複数箇所に突出する嵌
合突部２２を有す。環状部２１の外径は継手本体の内周
面にほぼ同じで、内径寸法は接続樹脂管１５の内径程度
である。また嵌合突部２２の幅より環状部２１の幅を大
きくしてあり、環状部２１の外周面が継手本体内周面１
４に当接して嵌合されている。
【００１１】また環状部２１の一方側面に深さ約１．０
ｍｍ程度の折り曲げ溝２３を設けてある。この折り曲げ
溝２３によって環状の樹脂製ストッパー２０は容易に折
り曲げることが出来、ストッパー２０を継手本体の環状
凹溝１６に装着する際、また本体内に装着されたストッ
パーを取り外す際に、折り曲げ溝２３から容易に折り曲
げられて装着と取り外しが簡単に行える。
【００１２】
【発明の効果】以上説明した様に、本発明による樹脂管
接続用継手は、通常は管の挿入量が規制されるストッパ
ー付の継手として使用され、また作業現場において、配
管の状況に応じて作業者が本体内のストッパーを取り外
すことが出来、管の外面に継手を装通して突き合わせ配
管接続を行うことが出来るもので、施工性がよい樹脂管
接続用継手である。
【図面の簡単な説明】
【図１】 本発明の一実施例を示す樹脂管接続用チーズ
継手の断面図である。
【図２】 図１のストッパー部を示す拡大断面図であ
る。
【図３】 ストッパー２０を示す正面図である。
【図４】 従来技術を示す断面図である。
【図５】 別の従来技術を示す断面図である。
【符号の説明】
１０ 継手本体 １１ 本管部 １２ 枝管部 １３ 枝管分岐口 １４ 本管内周面 １５ 樹脂管 １６環状凹溝 ２０ ストッパー ２１ 環状部 ２２ 嵌合突部 ２３ 折り曲げ溝
───────────────────────────────────────────────────── フロントページの続き (72)発明者 安田 久幸 三重県桑名市大福２番地日立金属株式会社 桑名工場内 (72)発明者 森川 秀一 三重県桑名市大福２番地日立金属株式会社 桑名工場内 (72)発明者 難波 俊博 三重県桑名市大福２番地日立金属株式会社 桑名工場内 Ｆターム(参考） 3H019 GA03 GA12 4F211 AD05 AD12 AD23 AG08 AH11 AH43 AR07 TA01 TC11 TD07 TD11 TD13 TH06 TH17 TH18 TJ22 TJ29 TN31

Claims (3)

    【特許請求の範囲】
  1. 【請求項１】 接続樹脂管の端部外面を差し込んで接
    続する円筒状に形成された継手本体と、前記継手本体の
    樹脂管を受け入れる内周部に嵌入可能に形成され、樹脂
    管の端面に当接して管の差し込み深さが規制される樹脂
    製のストッパーとからなり、該ストッパーは、前記継手
    本体の内周面に環状凹溝を形成し、該環状凹溝に嵌合す
    る円周上複数箇所に突出する嵌合突部と、樹脂管の端面
    に当接する環状部と、該環状部の一方の側面に設けた折
    り曲げ溝とからなることを特徴とする樹脂管接続用継
    手。
  2. 【請求項２】 前記継手本体の嵌合凹溝に前記ストッ
    パーの嵌合突部が嵌合すると共に、継手本体の内周面に
    前記ストッパーの環状部外面が当接することを特徴とす
    る請求項１記載の樹脂管接続用継手。
  3. 【請求項３】 前記継手本体の内周部には、発熱によ
    って樹脂管と溶融着する融着部が形成されたことを特徴
    とする請求項１乃至２記載の樹脂管接続用継手。
JP2000304845A 2000-10-04 2000-10-04 樹脂管接続用継手 Expired - Lifetime JP4484186B2 (ja)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03194294A (ja) * 1989-12-22 1991-08-23 Sekisui Chem Co Ltd 溶着継手
JPH07260055A (ja) * 1994-03-22 1995-10-13 Nippon Kokan Pipe Fittings Mfg Co Ltd 通信ケーブル等保護管用管継手
JPH08270873A (ja) * 1994-11-10 1996-10-15 Hitachi Metals Ltd 電気融着継手

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03194294A (ja) * 1989-12-22 1991-08-23 Sekisui Chem Co Ltd 溶着継手
JPH07260055A (ja) * 1994-03-22 1995-10-13 Nippon Kokan Pipe Fittings Mfg Co Ltd 通信ケーブル等保護管用管継手
JPH08270873A (ja) * 1994-11-10 1996-10-15 Hitachi Metals Ltd 電気融着継手

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