JPH05118486A - 管の接続部構造 - Google Patents

管の接続部構造

Info

Publication number
JPH05118486A
JPH05118486A JP3281211A JP28121191A JPH05118486A JP H05118486 A JPH05118486 A JP H05118486A JP 3281211 A JP3281211 A JP 3281211A JP 28121191 A JP28121191 A JP 28121191A JP H05118486 A JPH05118486 A JP H05118486A
Authority
JP
Japan
Prior art keywords
pipe
synthetic resin
metal
joint
sealant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3281211A
Other languages
English (en)
Inventor
Saneki Kishida
実樹 岸田
Kazuto Kobayashi
一人 小林
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
Original Assignee
Sekisui Chemical 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 Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP3281211A priority Critical patent/JPH05118486A/ja
Publication of JPH05118486A publication Critical patent/JPH05118486A/ja
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential 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
    • 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"
    • B29C65/36—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" heated by induction
    • B29C65/3604—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" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/362—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" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—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" heated by induction
    • B29C65/3604—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" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/362—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" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B29C65/3628—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" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising at least a single wire, e.g. in the form of a winding said at least a single wire having a waveform, e.g. a sinusoidal form
    • 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
    • B29C66/12—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
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12463—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered
    • B29C66/12464—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered being V-shaped
    • 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
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12469—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being asymmetric
    • 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
    • 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
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52293—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being external
    • 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
    • B29C66/52294—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being heated
    • 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
    • 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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/723—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 structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

(57)【要約】 （修正有） 【目的】合成樹脂管，内面樹脂被覆金属管等を、その管
端面を管内通水から止水して接続する場合、パテ状シ−
ル剤または接着剤を使用する場合のはみ出しシ−ル剤等
の管内面からの脱離による通水詰りを防止する。 【構成】筒状コア部２１を有する合成樹脂製管継手２の
その筒状コア部２１外面と合成樹脂管１の端部内面との
間を熱融着したことを特徴とする構成、及び筒状コア部
２１を有する合成樹脂製継手部材のその筒状コア部２１
外面と、内面に合成樹脂被覆層を有する金属管の管端部
内面の合成樹脂層との間を熱融着し、両管端部の外面間
に金属製カバ−を装着したことを特徴とする構成

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は合成樹脂管または内面樹
脂被覆金属管等の接続に使用する管の接続部構造に関す
るものである。
【０００２】
【従来の技術】管内通水から金属管内面を防食するため
に金属管内面に合成樹脂層を被覆した金属管（内面樹脂
被覆金属管）を接続する場合、管端面を管内通水から止
水し、管端面における金属管と合成樹脂層との境界部位
から当該金属管と樹脂層との層間への管内通水の侵入を
防止することが重要である。
【０００３】そこで、従来においては、図７の（イ）に
示すように雌ねじ溝ａ’を有するねじ込み式可鍛鋳鉄製
継手本体Ａ’の内部に、筒状コア部２１’を有する合成
樹脂体２’を成形・固設した継手の管端部収容間隙２
３’にシ−ラント等のパテ状シ−ル剤ｂ’を充填し、雄
ねじ溝を金属管外面に加工した管端部１０’を継手の雌
ねじ溝ａ’にねじ込み、上記のパテ状シ−ル剤ｂ’を加
圧して筒状コア部外面２１１’と管端部内面１０１’と
の間に圧入し、管端面ｅ’を管内通水から止水してい
る。
【０００４】また、塩化ビニル樹脂管等の合成樹脂管を
接続する場合、ＴＳ工法等、接着剤を使用することが多
いが、この場合も、管端面が管内通水に曝されれば、管
端面においては、スキン層で覆われている管内面とは異
なり可塑剤の溶出が懸念されるから、図７の（ロ）に示
すように、筒状コア部２１”を有する合成樹脂製管継手
２”を用い、管端部外面１０２’のみならず管端部内面
１０１’をも継手２”に接着することが安全である。
【０００５】
【発明が解決しようとする課題】しかしながら、上記の
パテ状シ−ル剤を使用する接続部構造においては、パテ
状シ−ル剤の管内面へのはみ出しが避けられず、このは
み出したパテ状シ−ル剤が管内水流のために管内面から
脱離し、この脱離したシ−ル剤片が弁等の複雑な通水路
にひっかかって通水詰りの原因となる畏れがある。
【０００６】上記の接着剤を使用する接続部構造におい
ても、管内面にはみ出した接着剤が膨潤し、この膨潤フ
ロックが管内水流のために管内面から脱離して上記と同
様に通水詰りを惹起する危険性がある。
【０００７】本発明の目的は、合成樹脂管，内面樹脂被
覆金属管等を、その管端面を管内通水から止水して接続
する場合、パテ状シ−ル剤または接着剤を使用する場合
のはみ出しシ−ル剤等の管内面からの脱離による通水詰
りを防止することにある。
【０００８】
【課題を解決するための手段】第１発明の管の接続部構
造は筒状コア部を有する合成樹脂製管継手のその筒状コ
ア部外面と合成樹脂管の端部内面との間を熱融着したこ
とを特徴とする構成であり、第２発明の管の接続部構造
は筒状コア部を有する合成樹脂製継手部材のその筒状コ
ア部外面と、内面に合成樹脂被覆層を有する金属管の管
端部内面の合成樹脂層との間を熱融着し、両管端部の外
面間に金属製カバ−を装着したことを特徴とする構成で
ある。
【０００９】
【作用】管端部の内面と管継手または管継手部材の外面
との熱融着のために、管端面を管内通水から止水でき
る。
【００１０】また、パテ状シ−ル剤または接着剤を使用
する場合とは異なり、管内面へのシ−ル剤または接着剤
のはみ出しがなく、従って、はみ出したパテ状シ−ル剤
等の管内水流による脱離片が弁内面等に付着することが
原因の通水詰りを確実に排除できる。
【００１１】
【実施例】以下、本発明の実施例を図面により説明す
る。図は第１発明の実施例を示す断面図である。
【００１２】図１において、１は合成樹脂管、例えば塩
化ビニル樹脂管である。２は合成樹脂、例えば塩化ビニ
ル樹脂製の管継手であり、筒状コア部２１を有し、この
コア部２１と継手２の外部スリ−ブ部２２との間に管端
部挿入用間隙２３を備えている。
【００１３】１０は合成樹脂管１の管端部を示し、継手
２の管端部挿入用間隙２３に挿入し、管端部内面１０１
と筒状コア部外面２１１との間を熱融着してある。ま
た、継手２の管端部挿入用間隙２３と管端部１０との前
記熱融着部位以外の部分は接着剤により接着してある。
【００１４】上記管端部内面１０１と継手２の筒状コア
部外面２１１との熱融着には、例えば、合成樹脂製継手
２の筒状コア部２１に金属リング３を埋設し、管接続部
外周より高周波磁界を作用させ、金属リング３に誘導電
流を流し、この誘導電流によるジュ−ル熱で金属リング
３を発熱させる方法を使用することができる。この金属
リング３の発熱により、金属リング３近傍の合成樹脂が
熱溶融されて合成樹脂管１の管端部内面１０１と合成樹
脂製継手２の筒状コア部外面２１１との接触界面が熱融
着される。
【００１５】上記の金属リング３には、交鎖する高周波
磁束によって電流が誘導され、この誘導電流によって充
分に大なるジュ−ル熱を発生するものであれは適宜のも
のを使用でき、形状的には、筒状板、筒状メッシュ、ま
たは図２の（イ）に示すように、蛇行状導線を筒状に形
成したもの、図２の（ロ）に示すように、スパイラル導
線の両端を連結したもの等を使用できる。
【００１６】上記の熱融着には、上記と同様に合成樹脂
製継手の筒状コア部に金属リングを埋着し、管接続部の
外周より超音波等のエネルギ−波を照射して金属リング
を発熱させる方法を使用することもできる。
【００１７】上記の実施例においては、合成樹脂製継手
の筒状コア部にのみ金属リングを埋設し、その筒状コア
部外面のみを管端部に熱融着しているが、図３の（イ）
並びに（ロ）に示すように、金属リング３の断面形状
を、継手２の外部スリ−ブ部２２と筒状コア部２１との
間のブリッジ部２４並びに外部スリ−ブ部２２における
管端部との近接部分にも誘導電流を通電し得る形状に
し、継手のブリッジ部と管端部との間並びに外部スリ−
ブ部と管端部外面との間をも熱融着によって接着するこ
とが望ましい。
【００１８】図４は第２発明の実施例を示す断面図であ
る。図４において、１は内面樹脂被覆金属管であり（１
１は金属管を、１２は樹脂層をそれぞれ示している）、
例えば、塩化ビニル樹脂管を接着剤により鋼管内面に貼
着したもの、鋼管内面に粉体塗装法によってポリエチレ
ン層、ナイロン層を被覆したもの等を使用できる。２は
合成樹脂製の継手部材であり、筒状コア部２１を有し、
内面樹脂被覆金属管１の内面樹脂層１２に熱融着可能な
合成樹脂、好ましくはその内面樹脂層と同材質の合成樹
脂で成形してある。
【００１９】１０は内面樹脂被覆金属管１の管端部を示
し、継手部材２の筒状コア部２１上に挿通し、この筒状
コア部外面２１１と内面樹脂被覆金属管端部内面の樹脂
層部分１０１とを熱融着してある。４は両管端部１０，
１０の外面上に跨って装着した金属製カバ−であり、一
方の管に引き通しておいた金属筒を引き戻し、この金属
筒４の各端部と各管端部１０との間に粘着テ−プ５を巻
き付けてある。
【００２０】図４において、継手部材２の筒状コア部外
面２１１と管端部内面の樹脂層部分１０１との熱融着に
は、継手部材２の両筒状コア部２１，２１間のほぼ全幅
にわたって金属リング３を埋設し、この金属リング３に
高周波磁束または超音波を交鎖または照射して金属リン
グ３を発熱させる方法を使用することができる。この場
合、継手部材２の筒状コア部２１がこの筒状コア部２１
を覆う内面樹脂被覆金属管端部１０の金属管部分によっ
て高周波磁束または超音波から遮蔽されるので、継手部
材中間部位の金属リング部分の幅Ｌを筒状コア部位の金
属リング部分の合計幅２Ｌ’よりも大とすること（図４
において、Ｌ＞２Ｌ’）が望ましい。
【００２１】上記第２発明の実施例においても、金属リ
ング３の断面形状を図５に示すように、継手部材２の中
央突出部２０における管端部との近接部分にも電流を流
し得る形状にし、その突出部側面と管端面との間をも熱
融着することが望ましい。
【００２２】上記において、金属製カバ−４は管接続部
に内面樹脂被覆金属管の耐外圧強度と同程度の耐外圧強
度を付与するために使用している。この金属製カバ−に
は、図６の（イ）に示すように、蝶番４１で結合した二
つ割れカバ−を使用することもできる〔図６の（イ）に
おいて、４２はワンタッチ式の止め具を示している）。
また、耐引き抜き強度が要求される場合は、図６の
（ロ）に示すように金属製カバ−４の各端部と各管端部
１０との間に抜け止めリング４３を嵌め込むことが望ま
しい。
【００２３】
【発明の効果】本発明の管の接続部構造は上述した通り
の構成であり、筒状コア部を有する継手のその筒状コア
部外面と管端部内面との間を熱融着してあるから、管端
面を管内通水から止水でき、管が内面樹脂被覆金属管の
場合は、管端面からの金属管と樹脂内層との層間への管
内通水の侵入を防止して金属管の内面防食を良好に行な
うことができ、管が塩化ビニル樹脂管のような合成樹脂
管の場合は、管切断端面からの可塑剤の溶出を防止し
て、合成樹脂管の強度を良好に保持できる。
【００２４】また、パテ状シ−ル剤または接着剤使用の
場合とは異なり、管内面にはみ出したパテ状シ−ル剤ま
たは接着剤が管内水流により管内面から脱離し、そのシ
−ル剤片等が弁等の複雑な通水路にひっかかって通水詰
りが生じるといったことがあり得ず、通水管路の保安に
も有利である。
【図面の簡単な説明】
【図１】第１発明の実施例を示す一部断面図である。
【図２】上記実施例において使用する金属リングの異な
る例を示す斜視図である。
【図３】同上実施例において使用する継手の異なる例を
示す一部断面図である。
【図４】第２発明の実施例を示す一部断面図である。
【図５】第２発明において使用する継手部材の一例を示
す一部断面図である。
【図６】図６の（イ）は第２発明において使用する金属
製カバ−の一例を示す正面図、図６の（ロ）は別例の金
属製カバ−を使用した第２発明の実施例を示す一部断面
図である。
【図７】異なる従来例を示す一部断面図である。
【符号の説明】
１ 合成樹脂管または内面樹脂被覆金属管 ２ 継手または継手部材 ２１ 筒状コア部 ４ 金属製カバ−

Claims (2)

    【特許請求の範囲】
  1. 【請求項１】筒状コア部を有する合成樹脂製管継手のそ
    の筒状コア部外面と合成樹脂管の端部内面との間を熱融
    着したことを特徴とする管の接続部構造。
  2. 【請求項２】筒状コア部を有する合成樹脂製継手部材の
    その筒状コア部外面と、内面に合成樹脂被覆層を有する
    金属管の管端部内面の合成樹脂層との間を熱融着し、両
    管端部の外面間に金属製カバ−を装着したことを特徴と
    する管の接続部構造。
JP3281211A 1991-10-28 1991-10-28 管の接続部構造 Pending JPH05118486A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3281211A JPH05118486A (ja) 1991-10-28 1991-10-28 管の接続部構造

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3281211A JPH05118486A (ja) 1991-10-28 1991-10-28 管の接続部構造

Publications (1)

Publication Number Publication Date
JPH05118486A true JPH05118486A (ja) 1993-05-14

Family

ID=17635910

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3281211A Pending JPH05118486A (ja) 1991-10-28 1991-10-28 管の接続部構造

Country Status (1)

Country Link
JP (1) JPH05118486A (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997049540A1 (en) * 1996-06-25 1997-12-31 Uponor B.V. Electrofusion fitting
US5961154A (en) * 1998-09-16 1999-10-05 Williams; Douglas Fume duct joint with clamping collar
EP2172328A1 (de) * 2008-10-02 2010-04-07 Leister Process Technologies Induktionsverbindungsmuffe zum Schmelzverbinden schweißbarer Thermoplastkörper
WO2015132783A3 (en) * 2014-03-04 2015-10-29 Huliot A.C.S. Ltd Electromagnetic induction welding of fluid distribution systems
US9528638B2 (en) 2011-04-07 2016-12-27 Huliot A.C.S. Ltd. Electromagnetic induction welding of plastic pipe distribution systems
US10710312B2 (en) 2017-03-13 2020-07-14 Huliot Agricultural Cooperative Society Ltd Induction weldable pipe connector having thermally insulated induction weldable socket mouth rims
NL2032647B1 (nl) * 2022-07-31 2024-02-06 Merisa Invest Bv Werkwijze voor het aan elkaar bevestigen van twee kunststof buizen, alsmede inductieverbindingsmof voor toepassing in de werkwijze

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997049540A1 (en) * 1996-06-25 1997-12-31 Uponor B.V. Electrofusion fitting
AU727163B2 (en) * 1996-06-25 2000-12-07 Uponor Innovation Ab Electrofusion fitting
US5961154A (en) * 1998-09-16 1999-10-05 Williams; Douglas Fume duct joint with clamping collar
EP2172328A1 (de) * 2008-10-02 2010-04-07 Leister Process Technologies Induktionsverbindungsmuffe zum Schmelzverbinden schweißbarer Thermoplastkörper
US8327900B2 (en) 2008-10-02 2012-12-11 Leister Technologies Ag Induction connecting sleeve for connecting weldable thermoplastic elements by means of fusion
US9528638B2 (en) 2011-04-07 2016-12-27 Huliot A.C.S. Ltd. Electromagnetic induction welding of plastic pipe distribution systems
WO2015132783A3 (en) * 2014-03-04 2015-10-29 Huliot A.C.S. Ltd Electromagnetic induction welding of fluid distribution systems
US10828840B2 (en) 2014-03-04 2020-11-10 Huliot A.C.S. Ltd Electromagnetic induction welding of fluid distribution systems
US10710312B2 (en) 2017-03-13 2020-07-14 Huliot Agricultural Cooperative Society Ltd Induction weldable pipe connector having thermally insulated induction weldable socket mouth rims
NL2032647B1 (nl) * 2022-07-31 2024-02-06 Merisa Invest Bv Werkwijze voor het aan elkaar bevestigen van twee kunststof buizen, alsmede inductieverbindingsmof voor toepassing in de werkwijze
WO2024030020A1 (en) * 2022-07-31 2024-02-08 Merisa Investments Bv Method for connecting two plastic pipes together, as well as an induction connecting sleeve for use in the method

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