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JP2003343788A - 管継手 - Google Patents

管継手

Info

Publication number
JP2003343788A
JP2003343788A JP2002158916A JP2002158916A JP2003343788A JP 2003343788 A JP2003343788 A JP 2003343788A JP 2002158916 A JP2002158916 A JP 2002158916A JP 2002158916 A JP2002158916 A JP 2002158916A JP 2003343788 A JP2003343788 A JP 2003343788A
Authority
JP
Japan
Prior art keywords
resin
receiving port
pipe
see
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.)
Withdrawn
Application number
JP2002158916A
Other languages
English (en)
Inventor
Sumio Matsuno
純雄 松野
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.)
Mitsubishi Chemical Corp
Original Assignee
Mitsubishi Plastics Industries 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 Mitsubishi Plastics Industries Ltd filed Critical Mitsubishi Plastics Industries Ltd
Priority to JP2002158916A priority Critical patent/JP2003343788A/ja
Publication of JP2003343788A publication Critical patent/JP2003343788A/ja
Withdrawn legal-status Critical Current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
    • B29C65/78—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
    • 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
    • B29C65/56—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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—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
    • B29C66/70—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
    • B29C66/733—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 optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence
    • B29C66/7336—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 optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being opaque, transparent or translucent to visible light
    • B29C66/73365—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 optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being opaque, transparent or translucent to visible light at least one of the parts to be joined being transparent or translucent to visible light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—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 intensive physical properties of the material of the parts to be joined
    • B29C66/7316—Surface properties
    • B29C66/73161—Roughness or rugosity

Landscapes

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

Abstract

(57)【要約】 【課題】 受口内への樹脂管の挿入状態を外部から容易
に確認することができ、確実な接合を行うことができる
管継手を提供する。 【解決手段】 樹脂管１１を接続するための受口１２を
備えた合成樹脂製の管継手において、前記受口１２にお
ける前記樹脂管１１の挿入端基準位置に対応する部分
に、該受口１２に挿入した樹脂管１１の端部を外部から
透視可能な透明合成樹脂製の透視部材１５を設ける。さ
らに、前記透視部材１５は、受口内周に突出して樹脂管
１１の挿入端に当接する突起部１９を備えている。

Description

【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、管継手に関し、特
に、受口内周面に埋設した電熱線を発熱させることによ
って受口内に挿入した樹脂管を融着接合する電気融着方
式の管継手に適した構造の管継手に関する。
【０００２】
【従来の技術及び発明が解決しようとする課題】従来か
ら、各種配管に用いられる樹脂管を接続する管継手とし
て電気融着継手が広く用いられている。この電気融着継
手は、接続する樹脂管が挿入される受口の内周部に電熱
線を埋設したものであって、樹脂管を接続する際には、
受口に樹脂管の端部を挿入した後、前記電熱線に通電し
て発熱させ、受口内周と樹脂管外周との接触面同士を溶
融させることにより、電気融着継手と樹脂管とを融着接
合させるように形成されている。
【０００３】このようにして両者を融着接合する際に
は、両者の融着接合面に酸化膜が存在すると、酸化膜に
よって両者の溶融樹脂同士の混合が不十分となり、必要
な接合強度が得られなくなることがある。このため、電
気融着継手を使用して樹脂管の接続を行う際には、樹脂
管の融着接合面に存在する酸化膜を除去するようにして
いる。また、受口内への樹脂管の挿入量が不足すると、
すなわち、樹脂管が受口内に規定量挿入されていない状
態で溶融接合を行うと、溶融面積が不足して十分な融着
強度が得られなくなることがある。
【０００４】このようなことから、電気融着継手を使用
して樹脂管を接続する際には、樹脂管の端部外周面をス
クレイプして酸化膜を除去するとともに、受口への挿入
代を見込んだ位置に標線を罫書き、この標線の位置まで
樹脂管を受口内に挿入するようにしていた。しかし、標
線を罫書き忘れたり、標線の罫書き位置を間違えたりす
ると、受口内への樹脂管の挿入量が不足することがあ
り、融着強度が低下するおそれがあった。特に、配管の
接続に電気融着継手が一般的に用いられているポリエチ
レンは、配管材料として透明なものを得ることが困難で
あり、また、他の樹脂においても、透明な合成樹脂は高
価であったり、耐候性に問題があったりして、汎用の配
管材料として用いることはできなかった。
【０００５】そこで本発明は、標線を罫書き忘れたり、
標線の罫書き位置を間違えたりしても、受口内への樹脂
管の挿入状態を外部から容易に確認することができ、確
実な接合を行うことができる管継手を提供することを目
的としている。
【０００６】
【課題を解決するための手段】上記目的を達成するた
め、本発明の管継手は、樹脂管を接続するための受口を
備えた合成樹脂製の管継手において、前記受口における
前記樹脂管の挿入端基準位置に対応する部分に、該受口
に挿入した樹脂管の端部を外部から透視可能な透明合成
樹脂製の透視部材を設けたことを特徴としている。さら
に、前記透視部材は、受口内周に突出して樹脂管の挿入
端に当接する突起部を備えていることを特徴としてい
る。
【０００７】
【発明の実施の形態】図１及び図２は本発明の管継手の
一形態例を示すもので、図１は管継手の断面図、図２は
透視部材の断面図である。この管継手は、直管状の継手
本体１０の両側に、樹脂管１１が挿入される受口１２，
１２をそれぞれ有するソケット形状の電気融着継手であ
って、両受口１２の内周部には、電熱線１３が巻回状態
で埋設されるとともに、受口端部外面には、電熱線１３
の端部が接続した一対の端子ピン１４が設けられてい
る。このような電気融着継手の継手本体１０は、通常、
ポリエチレンにより形成されている。
【０００８】そして、継手本体１０の中央部分で、前記
樹脂管１１の挿入端基準位置に対応する部分には、受口
１２に挿入した樹脂管１１の端部を外部から透視可能な
透明合成樹脂製の透視部材１５が設けられている。この
透視部材１５は、大径部１６及び小径部１７からなる二
段円柱状透視部材本体の大径部外周に鋸歯状の凹凸から
なる係合部１８を設けるとともに、透視部材本体の先
端、継手本体１０の内周側に、受口内周に突出して樹脂
管１１の挿入端に当接する突起部１９を設けたものであ
る。また、継手本体１０には、透視部材１５の形状に対
応した大径部及び小径部を有する透視部材取付孔が設け
られており、外周側の大径部内周には、前記係合部１８
の凹凸が係合する鋸歯状の凹凸が形成されている。
【０００９】透視部材１５は、大径部と小径部との間の
段差部にパッキン２０を装着した状態で継手本体１０の
透視部材取付孔に圧入され、前記係合部１８を係合させ
ることによって継手本体１０に取り付けられる。この状
態で前記突起部１９が受口内周に突出し、通常のソケッ
トの中央部分に設けられているストッパーと同様に、樹
脂管１１の挿入量を規制する状態となる。
【００１０】透視部材１５の大きさは、受口１２に挿入
した樹脂管１１の端部が挿入端基準位置に達したことを
確認できる大きさであればよく、透視部材１５を大きく
しすぎると、継手としての強度やシール性に問題が出る
おそれがあるので、一般的に設けられるストッパーの軸
方向の長さに対して２〜４倍程度が適当である。また透
視部材１５の形状は任意であり、角柱状、軸線方向に長
い扁平形状等の形状とすることができる。また、透視部
材１５の外面は、継手本体１０と面一になる円弧面で形
成することが好ましいが、平面であってもよく、継手本
体１０の外面から凹んでいたり、突出していたりしても
よい。
【００１１】このような透視部材１５を設けることによ
り、接続する樹脂管１１が受口１２内の所定位置まで挿
入されたことを、透視部材１５を通して外部から確認す
ることができるので、樹脂管１１を基準位置まで確実に
挿入した状態で融着接合することができる。したがっ
て、標線を罫書かなくても、挿入量不足による融着強度
の低下を回避できる。さらに、透視部材１５の内周側に
ストッパーとなる突起部１９を設けておき、この突起部
１９に管挿入端が当接するまで樹脂管１１を挿入するこ
とにより、樹脂管１１を挿入基準位置まで確実に挿入で
き、挿入し過ぎも防止できる。
【００１２】また、透視部材１５は、継手本体１０に１
箇所あれば十分であるが、複数箇所に設けておいてもよ
い。さらに、継手本体１０の内周に通常のストッパーが
設けられている場合は、突起部１９を省略してもよく、
継手本体１０のストッパーと透視部材１５の突起部１９
とを併用してもよい。
【００１３】なお、透視部材１５は、ポリカーボネート
樹脂、ＰＭＭＡ樹脂、ＭＳ樹脂、透明プロピレン樹脂、
透明ＡＢＳ樹脂、透明ポリスチレン、透明エポキシ樹
脂、ポリアリレート、ポリサルフォン、ポリエーテルサ
ルフォン、透明ナイロン樹脂、透明ポリブチレンテレフ
タレート、透明フッ素樹脂、ＴＰＸ（ポリ−４−メチル
ペンテン−１）、透明フェノキシ樹脂、ポリイミド樹脂
といった透明合成樹脂を用いて形成することができる。
透視部材１５の継手本体１０への取付けは、両者の樹脂
種や内圧等に応じて適宜な方法を採用することができ
る。すなわち、融着、溶着、螺着、接着、嵌着、係着、
圧着等の取付方法により、配管内部の流体が漏洩しない
ような状態で取り付ければよく、両樹脂種によっては、
一体的に射出成形することも可能である。
【００１４】また、継手の形状は前述のソケットに限る
ものではなく、エルボやティーをはじめとして各種継手
形状に適用でき、さらに、電気融着継手以外の各種継手
における受口部分にも適用可能であり、透視部材１５を
介して挿入状態を確認することにより、挿入量の不足に
よる接続強度の低下を未然に防止することができる。加
えて、透視部材１５の耐候性等が継手本体１０より劣る
場合は、管接合後の透視部材１５の外面に、耐候性に優
れた塗料を塗布したり、保護シート等を貼り付けたりす
ることができ、さらに、透視部材１５の外面が継手本体
１０の外面より凹んでいる場合は、この部分に適宜な保
護材を充填することもできる。
【００１５】
【発明の効果】以上説明したように、本発明の管継手に
よれば、受口内への樹脂管の挿入状態を外部から確認す
ることができるので、挿入量不足による融着強度の低下
を回避でき、所定の接合強度で配管を接続することがで
きる。
【図面の簡単な説明】
【図１】 本発明の一形態例を示す管継手の断面図であ
る。
【図２】 透視部材の断面図である。
【符号の説明】
１０…継手本体、１１…樹脂管、１２…受口、１３…電
熱線、１４…端子ピン、１５…透視部材、１６…大径
部、１７…小径部、１８…係合部、１９…突起部、２０
…パッキン

Claims (2)

    【特許請求の範囲】
  1. 【請求項１】 樹脂管を接続するための受口を備えた合
    成樹脂製の管継手において、前記受口における前記樹脂
    管の挿入端基準位置に対応する部分に、該受口に挿入し
    た樹脂管の端部を外部から透視可能な透明合成樹脂製の
    透視部材を設けたことを特徴とする管継手。
  2. 【請求項２】 前記透視部材は、受口内周に突出して樹
    脂管の挿入端に当接する突起部を備えていることを特徴
    とする請求項１記載の管継手。
JP2002158916A 2002-05-31 2002-05-31 管継手 Withdrawn JP2003343788A (ja)

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Country Link
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006266465A (ja) * 2005-03-25 2006-10-05 Ck Metals Co Ltd 管継手
JP2011214686A (ja) * 2010-04-01 2011-10-27 Sekisui Chem Co Ltd 管継手の受口部構造
WO2012059631A1 (en) * 2010-11-01 2012-05-10 Maricap Oy Sleeve part of a pipe joint and a pipe joint
US20130213121A1 (en) * 2010-11-01 2013-08-22 Maricap Oy Method and apparatus for pressure testing a pipe joint
WO2013135951A1 (en) * 2012-03-13 2013-09-19 Maricap Oy Pipe joint and method for forming the pipe joint
JP2018162858A (ja) * 2017-03-27 2018-10-18 積水化学工業株式会社 電気融着継手

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006266465A (ja) * 2005-03-25 2006-10-05 Ck Metals Co Ltd 管継手
JP2011214686A (ja) * 2010-04-01 2011-10-27 Sekisui Chem Co Ltd 管継手の受口部構造
KR20130108408A (ko) * 2010-11-01 2013-10-02 마리캡 오이 파이프 조인트의 슬리브부와 파이프 조인트
CN103201552A (zh) * 2010-11-01 2013-07-10 马里凯普有限公司 管接头的套管部分和管接头
US20130213121A1 (en) * 2010-11-01 2013-08-22 Maricap Oy Method and apparatus for pressure testing a pipe joint
WO2012059631A1 (en) * 2010-11-01 2012-05-10 Maricap Oy Sleeve part of a pipe joint and a pipe joint
JP2014500445A (ja) * 2010-11-01 2014-01-09 マリキャップ オーワイ 管継手のスリーブ部品及び管継手
RU2566515C2 (ru) * 2010-11-01 2015-10-27 Марикап Ой Муфтовая часть трубного соединения и трубное соединение
US9310012B2 (en) 2010-11-01 2016-04-12 Maricap Oy Sleeve part of a pipe joint and a pipe joint
WO2013135951A1 (en) * 2012-03-13 2013-09-19 Maricap Oy Pipe joint and method for forming the pipe joint
RU2616723C2 (ru) * 2012-03-13 2017-04-18 Марикап Ой Соединение труб и способ формирования соединения труб
US9933099B2 (en) 2012-03-13 2018-04-03 Maricap Oy Pipe joint and method for forming the pipe joint
JP2018162858A (ja) * 2017-03-27 2018-10-18 積水化学工業株式会社 電気融着継手

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