JP4484186B2 - 樹脂管接続用継手 - Google Patents

樹脂管接続用継手 Download PDF

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Publication number
JP4484186B2
JP4484186B2 JP2000304845A JP2000304845A JP4484186B2 JP 4484186 B2 JP4484186 B2 JP 4484186B2 JP 2000304845 A JP2000304845 A JP 2000304845A JP 2000304845 A JP2000304845 A JP 2000304845A JP 4484186 B2 JP4484186 B2 JP 4484186B2
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Japan
Prior art keywords
stopper
joint
resin pipe
joint body
pipe
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Expired - Lifetime
Application number
JP2000304845A
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JP2002106778A (ja
Inventor
崇朗 吉井
茂 水谷
久幸 安田
秀一 森川
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
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Hitachi Metals Ltd
Tokyo Gas Co Ltd
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    • 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)

Description

【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８−２７０８７３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１１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１６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２〜３ｍｍ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１４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１．０ｍｍ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

Claims (3)

  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. 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. 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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