JPH05248586A - 電熱線を内蔵したメカニカル継手 - Google Patents

電熱線を内蔵したメカニカル継手

Info

Publication number
JPH05248586A
JPH05248586A JP4051386A JP5138692A JPH05248586A JP H05248586 A JPH05248586 A JP H05248586A JP 4051386 A JP4051386 A JP 4051386A JP 5138692 A JP5138692 A JP 5138692A JP H05248586 A JPH05248586 A JP H05248586A
Authority
JP
Japan
Prior art keywords
socket
heating wire
synthetic resin
joint body
joint
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
JP4051386A
Other languages
English (en)
Inventor
Ryuichiro Nakamura
隆一郎 中村
Hiroshi Takeuchi
博司 竹内
Kazunori Umeda
一徳 梅田
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 JP4051386A priority Critical patent/JPH05248586A/ja
Publication of JPH05248586A publication Critical patent/JPH05248586A/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
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—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
    • B29C66/52291—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
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/24—Pipe joints or couplings

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】 【目的】 配管施工が簡単かつ確実に行える電熱線を内
蔵したメカニカル継手を提供する。 【構成】 端部内面に雌ねじ１１を有する継手本体１
と、前記雌ねじ１１と螺合する雄ねじ２１を有する押え
ナット２と、継手本体１内に装填される合成樹脂製ソケ
ット３からなるメカニカル継手であって、前記ソケット
３の内周面に電熱線３２を所定間隔で埋設する。 【効果】 ソケットの内周面と合成樹脂管の端部外周面
とを融着接合するので、配管施工が短時間に、簡単かつ
確実に行える。

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は配管施工が簡単、かつ確
実に行える電熱線を内蔵したメカニカル継手に関する。
【０００２】
【従来の技術】従来から、各種の配管施工分野でメカニ
カル継手が使用されている。このメカニカル継手は、継
手本体の雌ねじに押えナットの雄ねじを螺合して継手本
体内に装填したソケットを前記押えナットで押圧する構
成からなっており、このメカニカル継手を用いて合成樹
脂管を接続する場合には、次の手順で配管施工を行なっ
ていた。即ち、両側から配管してきたそれぞれの合成樹
脂管の端部に押えナットとソケットをセットしてから継
手本体の両端部に嵌挿し、該継手本体に螺合した押えナ
ットでソケットを押圧する。
【０００３】
【発明が解決しようとする課題】しかしながら、従来の
メカニカル継手は、合成樹脂管の端部とソケットとを接
着剤を用いて接続していたので、両者が完全に接着接合
するまでに長時間を要するため、配管施工に時間がかか
るという問題があった。
【０００４】本発明はかかる課題を解決したものであっ
て、配管施工が短時間に、簡単かつ確実に行える電熱線
を内蔵したメカニカル継手を提供するものである。
【０００５】
【課題を解決するための手段】本発明は、端部内面に雌
ねじを有する継手本体と、前記雌ねじと螺合する雄ねじ
を有する押えナットと、一端部外周に鍔を設けた合成樹
脂製ソケットとからなり、前記継手本体内に装填したソ
ケットの鍔を継手本体と螺合した押えナットで押圧する
ようになしたメカニカル継手において、前記ソケットの
内周面に電熱線を所定間隔で埋設したことを特徴とする
ものである。
【０００６】
【作用】合成樹脂製ソケットの内周面に電熱線を埋設し
たので、合成樹脂管の端部にソケットを外挿してから電
熱線に通電して発熱させると、該ソケットの内周面と合
成樹脂管の端部外周面とが溶融して融着接合する。
【０００７】
【実施例】以下、本発明の実施例を図面に基づいて詳細
に説明する。図１は本発明の一実施例を示すメカニカル
継手の半断面正面図、図２は本発明の他の実施例を示す
メカニカル継手の縦断面図、図３は更に本発明の他の実
施例を示すメカニカル継手の縦断面図である。
【０００８】まず、図１に示したメカニカル継手Ａ１に
ついて説明する。このメカニカル継手Ａ１は継手本体
１、押えナット２、ソケット３およびシールパッキン４
からなるものである。継手本体１は外面が六角形、八角
形等の多角形に形成されており、その両端部内面には雌
ねじ１１が設けられいる。また、継手本体１の内面中央
部にはストッパー１２が設けられており、該ストッパー
１２の両側にシールパッキン４およびソケット３の一端
部を収納するための環状溝１２０が設けられている。
【０００９】押えナット２には前記継手本体１の雌ねじ
１１と螺合する雄ねじ２１が設けられており、その一端
部外周に設けたフランジ部２２の外面は六角形、八角形
等の多角形に形成されている。この実施例の継手本体１
および押えナット２は、鋳鉄等の金属、塩化ビニル樹脂
等の合成樹脂その他適宜の素材で形成されるものであ
る。一方、ソケット３はポリエチレン、ポリプロピレ
ン、ポリブテン等の合成樹脂からなる筒体の一端部外周
に鍔３１を設けたものであって、その内周面には電熱線
３２が所定間隔で螺旋状に埋設されている。
【００１０】このメカニカル継手Ａ１に合成樹脂管５を
接続する場合、まず図１の右側に示した如く合成樹脂管
５の端部に押えナット２とソケット３をセットし、スト
ッパー１２の両側に設けた環状溝１２０にシールパッキ
ン４を装着する。そこで、図１の左側に示した如く合成
樹脂管５の端部を継手本体１に嵌挿し、該継手本体１の
雌ねじ１１に押えナット２の雄ねじ２１を螺合させてね
じ込む。すると、ソケット３の鍔３１が押えナット２で
押圧され、その端面がシールパッキン４を介してストッ
パー１２と圧接する。
【００１１】この接続操作の際に、両側から配管してき
たそれぞれの合成樹脂管５の端部の間に所定の間隔を設
けておくと、押えナット２でソケット３の鍔３１を押圧
したときソケット３は合成樹脂管５の端部から前進して
シールパッキン４と圧接する。一方、合成樹脂管５はた
るむことなく継手本体１の両端部に嵌挿される。そこ
で、ソケット３の内周面に埋設した電熱線３２に電流を
所定時間流して発熱させると、ソケット３の内周面と合
成樹脂管５の端部外周面とが同時に溶融して融着接合す
る。
【００１２】尚、合成樹脂管５を一方から他方に向かっ
て順次配管する場合には、予め合成樹脂管５の端部にソ
ケット３を融着接合してから継手本体１に嵌挿してもよ
い。即ち、合成樹脂管５の端部にソケット３を外挿し、
該ソケット３の内周面に埋設した電熱線３２に通電して
ソケット３の内周面と合成樹脂管５の端部外周面とを融
着接合する。そこで、合成樹脂管５の端部を継手本体１
に嵌挿し、該継手本体１に螺合した押えナット２でソケ
ット３の鍔３１を押圧して接続する。
【００１３】図２に示した他の実施例のメカニカル継手
Ａ２は、前記実施例のシールパッキン４を不要としたも
のである。継手本体１はポリエチレン、ポリプロピレ
ン、ポリブテン等の合成樹脂で形成すると共に該継手本
体１の内面中央部にストッパー１２を設け、該ストッパ
ー１２の両側面に電熱線１３を所定間隔で埋設したもの
である。電熱線１３の両端部は継手本体１の外面に設け
たコネクター１４のピン１５と接続している。
【００１４】この実施例のメカニカル継手Ａ２に合成樹
脂管５を接続する場合、図２の右側に示した如く、合成
樹脂管５の端部に押えナット２とソケット３をセットし
てから継手本体１に嵌挿する。このようにして継手本体
１の両端部に合成樹脂管５の端部を嵌挿した後、ソケッ
ト３の内周面に埋設した電熱線３２およびストッパー１
２の側面に埋設した電熱線１３に通電して発熱させる
と、ソケット３の内周面と合成樹脂管５の端部外周面と
が溶融して融着接合し、またソケット３の端面とストッ
パー１２の側面とが溶融して融着接合する。
【００１５】図３に更に他の実施例を示したメカニカル
継手Ａ３は、図２に示した実施例におけるストッパー１
２に代えて渦巻き状に巻回した電熱線１３を配設したも
のである。電熱線１３の外面はポリエチレン等によって
被覆されており、相互に接触しないように渦巻き状に巻
回された電熱線１３の両端部は継手本体１の外面に設け
たコネクター１４のピン１５と接続している。この実施
例のメカニカル継手Ａ３には、図２に示した実施例と同
様にして合成樹脂管５が接続される。
【００１６】
【発明の効果】以上詳述した如く、本発明のメカニカル
継手はソケットの内周面に電熱線を埋設したので、該ソ
ケットを合成脂管の端部に外挿してから電熱線に通電し
て発熱させるだけで、合成樹脂管の端部にソケットを融
着接合することができる。従って、接着剤を用いて合成
樹脂管の端部にソケットを接着接合していた従来継手と
比較して、本発明のメカニカル継手を使用すると現場で
の配管施工が短時間に、簡単かっ確実に行なえる。
【図面の簡単な説明】
【図１】図１は、本発明の一実施例を示すメカニカル継
手の半断面正面図である。
【図２】図２は、本発明の他の実施例を示すメカニカル
継手の縦断面図である。
【図３】図３は、更に本発明の他の実施例を示すメカニ
カル継手の縦断面図である。
【符号の説明】
Ａ１ メカニカル継手 Ａ２ メカニカル継手 Ａ３ メカニカル継手 １ 継手本体 ２ 押えナット ３ ソケット

Claims (1)

    【特許請求の範囲】
  1. 【請求項１】 端部内面に雌ねじ（１１）を有する継手
    本体（１）と、前記雌ねじ（１１）と螺合する雄ねじ
    （２１）を有する押えナット（２）と、一端部外周に鍔
    （３１）を設けた合成樹脂製ソケット（３）とからな
    り、前記継手本体（１）内に装填したソケット（３）の
    鍔（３１）を継手本体（１）と螺合した押えナット
    （２）で押圧するようになしたメカニカル継手におい
    て、前記ソケット（３）の内周面に電熱線（３２）を所
    定間隔で埋設したことを特徴とする電熱線を内蔵したメ
    カニカル継手。
JP4051386A 1992-03-10 1992-03-10 電熱線を内蔵したメカニカル継手 Pending JPH05248586A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4051386A JPH05248586A (ja) 1992-03-10 1992-03-10 電熱線を内蔵したメカニカル継手

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4051386A JPH05248586A (ja) 1992-03-10 1992-03-10 電熱線を内蔵したメカニカル継手

Publications (1)

Publication Number Publication Date
JPH05248586A true JPH05248586A (ja) 1993-09-24

Family

ID=12885511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4051386A Pending JPH05248586A (ja) 1992-03-10 1992-03-10 電熱線を内蔵したメカニカル継手

Country Status (1)

Country Link
JP (1) JPH05248586A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07224989A (ja) * 1994-02-07 1995-08-22 Toa Koukiyuu Keishiyu Valve Seizo Kk ねじ込み形管継手
WO2003100310A1 (en) * 2002-05-23 2003-12-04 Lattice Intellectual Property Ltd Method and apappratus for joining plastic pipes
EP1445089A1 (en) * 2002-11-01 2004-08-11 Synventive Molding Solutions B.V. Screw connection assembly for tubes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07224989A (ja) * 1994-02-07 1995-08-22 Toa Koukiyuu Keishiyu Valve Seizo Kk ねじ込み形管継手
WO2003100310A1 (en) * 2002-05-23 2003-12-04 Lattice Intellectual Property Ltd Method and apappratus for joining plastic pipes
EP1445089A1 (en) * 2002-11-01 2004-08-11 Synventive Molding Solutions B.V. Screw connection assembly for tubes

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