JP2002188787A - Connecting device for pipe joint with built-in heating wire - Google Patents

Connecting device for pipe joint with built-in heating wire

Info

Publication number
JP2002188787A
JP2002188787A JP2001288696A JP2001288696A JP2002188787A JP 2002188787 A JP2002188787 A JP 2002188787A JP 2001288696 A JP2001288696 A JP 2001288696A JP 2001288696 A JP2001288696 A JP 2001288696A JP 2002188787 A JP2002188787 A JP 2002188787A
Authority
JP
Japan
Prior art keywords
peripheral surface
synthetic resin
heating wire
pipe joint
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.)
Pending
Application number
JP2001288696A
Other languages
Japanese (ja)
Inventor
Tadao Ando
忠雄 安藤
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 Plastics Inc
Original Assignee
Mitsubishi Plastics Inc
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 Inc filed Critical Mitsubishi Plastics Inc
Priority to JP2001288696A priority Critical patent/JP2002188787A/en
Publication of JP2002188787A publication Critical patent/JP2002188787A/en
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
    • B29C66/51—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
    • 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
    • B29C65/3432—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 comprising several wires, e.g. in the form of several independent windings
    • 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
    • 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
    • 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
    • B29C65/7805—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features
    • B29C65/7814—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features in the form of inter-cooperating positioning features, e.g. tenons and mortises
    • 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
    • B29C66/5229—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
    • B29C66/52297—Joining tubular articles involving the use of a socket said socket comprising slip-off prevention means
    • 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
    • B29C65/78—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
    • B29C65/7841—Holding or clamping means for handling purposes
    • 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

Landscapes

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

Abstract

PROBLEM TO BE SOLVED: To provide a connecting device for a pipe joint with built-in heating wires allowing easy and exact piping. SOLUTION: This connecting device for the pipe joint with built-in heating wires is provided with a female screw 3a in the inner peripheral surface of a tip of a socket 11, in which heating wires 12 are not embedded, and a male screw 3b in the outer peripheral surface of a tip of a synthetic resin pipe 2. The female screw 3a of the union joint 1 and the male screw 3b of the synthetic resin pipe 2 are screwed to each other for fixation, and the heating wires 12 are heated to fuse the inner peripheral surface of the socket 11 and the outer peripheral surface of the end of the synthetic resin pipe 2 for connection.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、電熱線を内蔵した
管継手に合成樹脂管を確実、かつ強固に融着接合できる
接続装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection device capable of securely and firmly fusion-bonding a synthetic resin pipe to a pipe joint containing a heating wire.

【０００２】[0002]

【従来の技術】従来からガス管等の配管分野では、図２
に部分断面図で示した如く、受口１１の内周面に電熱線
１２を埋設した管継手１を用いて合成樹脂管２を融着接
合することが行われている。2. Description of the Related Art Conventionally, in the field of piping such as gas pipes, FIG.
As shown in the partial sectional view of FIG. 1, a synthetic resin pipe 2 is fusion-bonded using a pipe joint 1 in which a heating wire 12 is embedded in an inner peripheral surface of a receiving port 11.

【０００３】ところで、管継手１に合成樹脂管２を融着
接合する場合、管継手１の受口１１内に合成樹脂管２の
端部を嵌挿してから電熱線１２を発熱させて受口１１の
内周面と合成樹脂管２の端部外周面とを同時に溶融させ
たときに、該溶融樹脂の圧力が高まって受口１１内から
合成樹脂管２が押し出されて脱出するという問題が起き
る。このため、従来は管継手１の受口１１内に合成樹脂
管２の端部を嵌挿してからそれぞれの合成樹脂管２をク
ランプＣで把持し、受口１１内から合成樹脂管２が脱出
するのを防止しながら電熱線１２を発熱させて融着接合
していた。When the synthetic resin pipe 2 is fusion-bonded to the pipe joint 1, the end of the synthetic resin pipe 2 is inserted into the socket 11 of the pipe joint 1, and then the heating wire 12 is heated to generate heat. When the inner peripheral surface of the resin tube 11 and the outer peripheral surface of the end portion of the synthetic resin tube 2 are simultaneously melted, the pressure of the molten resin increases and the synthetic resin tube 2 is pushed out from the receiving port 11 and escapes. Get up. For this reason, conventionally, the end of the synthetic resin pipe 2 is inserted into the socket 11 of the pipe joint 1 and then each synthetic resin pipe 2 is gripped with the clamp C, and the synthetic resin pipe 2 escapes from the socket 11. In this case, the heating wire 12 is caused to generate heat while performing fusion bonding.

【０００４】[0004]

【発明が解決しようとする課題】しかしながら、現場で
の配管施工の際に、それぞれの合成樹脂管２をクランプ
Ｃで把持したり、取り外したりする作業が非常に面倒で
あった。また、施工時間の短縮を図るために溶融樹脂が
十分に固化していない間に配管施工業者がクランプＣを
取り外してしまうことがあるため、受口１１内から合成
樹脂管２が押し出されて接続不良が発生するという問題
があった。However, the work of grasping and removing each synthetic resin pipe 2 with the clamp C during piping work on site is very troublesome. In addition, since the plumbing contractor may remove the clamp C while the molten resin is not sufficiently solidified in order to shorten the construction time, the synthetic resin pipe 2 is pushed out from the receiving port 11 and connected. There was a problem that defects occurred.

【０００５】本発明はかかる課題を解決したものであっ
て、配管施工が簡単に行なえると共に、管継手と合成樹
脂管とを確実かつ強固に融着接合できる接続装置を提供
するものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a connecting device which can easily perform piping work and can surely and firmly fusion-bond a pipe joint and a synthetic resin pipe.

【０００６】[0006]

【課題を解決するための手段】本発明は、管継手１の一
端部に設けた受口１１の内周面に電熱線１２を所定間隔
で螺旋状に埋設し、該受口１１内に合成樹脂管２の端部
を嵌挿してから前記電熱線１２を発熱させて受口１１の
内周面と合成樹脂管２の端部外周面とを溶融させて融着
接合する電熱線１２を内蔵した管継手であって、電熱線
１２が埋設されていない受口１１の奥部内周面に雌ねじ
３ａを設けると共に合成樹脂管２の先端部外周面に雄ね
じ３ｂを設け、前記管継手１の雌ねじ３ａと合成樹脂管
２の雄ねじ３ｂを螺合させて両者を固定してから電熱線
１２を発熱させて受口１１の内周面と合成樹脂管２の端
部外周面とを融着接合することを特徴とするものであ
る。According to the present invention, a heating wire 12 is helically embedded at a predetermined interval on an inner peripheral surface of a receiving port 11 provided at one end of a pipe joint 1 and is synthesized in the receiving port 11. After the end of the resin tube 2 is inserted, the heating wire 12 is heated so that the inner peripheral surface of the receiving port 11 and the outer peripheral surface of the end of the synthetic resin tube 2 are melted and bonded. And a female screw 3a is provided on an inner peripheral surface of a deep portion of the receptacle 11 in which the heating wire 12 is not buried, and a male screw 3b is provided on an outer peripheral surface of a distal end portion of the synthetic resin pipe 2. 3a and the male screw 3b of the synthetic resin tube 2 are screwed together to fix them, and then the heating wire 12 is heated to fuse and join the inner peripheral surface of the receptacle 11 and the outer peripheral surface of the end of the synthetic resin tube 2. It is characterized by the following.

【０００７】[0007]

【発明の実施の形態】以下、本発明の実施例を図面にて
詳細に説明する。図１は本発明の一実施例を示す接続装
置の要部断面図である。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view of a main part of a connection device showing one embodiment of the present invention.

【０００８】図中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からなる管継手、２は管継手１
と同種の樹脂からなる合成樹脂管である。管継手１の一
端部には合成樹脂管２の外径とほぼ等しい内径を有する
受口１１が設けられており、該受口１１の内周面に電熱
線１２が所定間隔で螺旋状に埋設されている。一方、受
口１１の外周面には電源接続端子１３を内蔵したコネク
ター１４が設けられており、該電源接続端子１３に前記
電熱線１２の両端部が接続している。１５は受口１１の
奥部に設けたストッパー段部である。In the figure, reference numeral 1 denotes polyethylene, polypropylene,
Pipe fitting made of synthetic resin such as polybutene, 2 is pipe fitting 1
And a synthetic resin tube made of the same kind of resin. A receiving port 11 having an inner diameter substantially equal to the outer diameter of the synthetic resin pipe 2 is provided at one end of the pipe joint 1, and a heating wire 12 is helically embedded at a predetermined interval in an inner peripheral surface of the receiving port 11. Have been. On the other hand, a connector 14 containing a power supply connection terminal 13 is provided on the outer peripheral surface of the receptacle 11, and both ends of the heating wire 12 are connected to the power supply connection terminal 13. Reference numeral 15 denotes a stopper step provided at the back of the receiving port 11.

【０００９】管継手１の受口１１の奥部内周面、即ち電
熱線１２が埋設されていない受口１１の奥部内周面から
ストッパー段部１５の手前までの間に雌ねじ３ａが設け
られている。また、合成樹脂管２の先端部外周面には前
記雌ねじ３ａと螺合する雄ねじ３ｂが設けられている。A female screw 3 a is provided between the inner peripheral surface of the inner part of the receiving port 11 of the pipe joint 1, that is, from the inner peripheral surface of the inner part of the receiving port 11 where the heating wire 12 is not embedded, to just before the stopper step 15. I have. A male screw 3b screwed with the female screw 3a is provided on the outer peripheral surface of the distal end portion of the synthetic resin tube 2.

【００１０】この管継手１に合成樹脂管２を接続する場
合、管継手１の受口１１内に合成樹脂管２の端部を奥部
まで押し込んでから回転させる。すると、受口１１の奥
部内周面に設けられた雌ねじ３ａと、合成樹脂管２の先
端部外周面に設けられた雄ねじ３ｂとが螺合するので、
更に回転させつつ合成樹脂管２の先端部がストッパー段
部１５に当接するまでねじ込む。When the synthetic resin pipe 2 is connected to the pipe joint 1, the end of the synthetic resin pipe 2 is pushed into the receiving port 11 of the pipe joint 1 to the inner part and then rotated. Then, the female screw 3a provided on the inner peripheral surface at the back of the receiving port 11 and the male screw 3b provided on the outer peripheral surface at the distal end of the synthetic resin tube 2 are screwed together.
While further rotating, screw in the synthetic resin tube 2 until the distal end portion contacts the stopper step portion 15.

【００１１】この様にして、管継手１の雌ねじ３ａと合
成樹脂管２の雄ねじ３ｂとを螺合して両者を固定したの
ち、コネクター１４の電源接続端子１３に電力線を接続
して電熱線１２に所定時間電流を流す。すると、電熱線
１２が発熱して受口１１の内周面と合成樹脂管２の端部
外周面とが同時に溶融する。In this manner, the female screw 3a of the pipe joint 1 and the male screw 3b of the synthetic resin pipe 2 are screwed together and fixed, and then the power line is connected to the power supply connection terminal 13 of the connector 14 to connect the heating wire 12 Current for a predetermined time. Then, the heating wire 12 generates heat and the inner peripheral surface of the receiving port 11 and the outer peripheral surface of the end of the synthetic resin tube 2 are simultaneously melted.

【００１２】電熱線１２の発熱によって受口１１の内周
面と合成樹脂管２の端部外周面とが同時に溶融すると、
該溶融樹脂の圧力が高まって受口１１内から合成樹脂管
２を押し出そうとする力が発生するが、受口１１の奥部
内周面に設けられた雌ねじ３ａと合成樹脂管２の先端部
外周面に設けられた雄ねじ３ｂとが螺合しているため、
合成樹脂管２の抜け出しが確実に防止され、両者は強固
に融着接合する。If the inner peripheral surface of the receptacle 11 and the outer peripheral surface of the end of the synthetic resin tube 2 are simultaneously melted by the heat generated by the heating wire 12,
The pressure of the molten resin is increased to generate a force for pushing out the synthetic resin tube 2 from the inside of the receiving port 11. However, the female screw 3 a provided on the inner peripheral surface at the back of the receiving port 11 and the tip of the synthetic resin tube 2 are formed. Since it is screwed with the male screw 3b provided on the outer peripheral surface of the
The detachment of the synthetic resin tube 2 is reliably prevented, and the two are firmly fused and joined.

【００１３】[0013]

【発明の効果】以上詳述した如く、本発明の接続装置
は、電熱線が埋設されていない受口の奥部内周面に雌ね
じを設けると共に合成樹脂管の先端部外周面に雄ねじを
設け、前記管継手の雌ねじと合成樹脂管の雄ねじを螺合
させて両者を固定してから電熱線を発熱させるので、受
口の内周面と合成樹脂管の端部外周面とが溶融して樹脂
圧力が高まっても受口内から合成樹脂管が押し出されて
脱出することがなく、管継手と合成樹脂管とが確実かつ
強固に融着接合する。また、本発明の接続装置はクラン
プによる固定、および取り外し操作が不要となるので、
従来装置と比較して施工時間を大幅に短縮することがで
きる。As described in detail above, the connecting device of the present invention provides a female screw on the inner peripheral surface at the back of the socket where the heating wire is not embedded, and a male screw on the outer peripheral surface at the distal end of the synthetic resin pipe. The female screw of the pipe joint and the male screw of the synthetic resin tube are screwed together to fix the two, and then the heating wire is heated, so that the inner peripheral surface of the receiving port and the outer peripheral surface of the end of the synthetic resin tube melt and the resin is melted. Even when the pressure increases, the synthetic resin pipe is not pushed out from the inside of the receiving port and does not escape, so that the pipe joint and the synthetic resin pipe are securely and firmly fusion-bonded. In addition, since the connection device of the present invention does not require fixing and removal operations by a clamp,
The construction time can be greatly reduced as compared with the conventional apparatus.

【図面の簡単な説明】[Brief description of the drawings]

【図１】図１は本発明の一実施例を示す接続装置の要部
断面図である。FIG. 1 is a sectional view of a main part of a connection device showing one embodiment of the present invention.

【図２】図２は従来例を示す部分断面図である。FIG. 2 is a partial sectional view showing a conventional example.

【符号の説明】[Explanation of symbols]

１ 管継手 ２ 合成樹脂管 １１ 受口 １２ 電熱線 ３ａ 雌ねじ ３ｂ 雄ねじ DESCRIPTION OF SYMBOLS 1 Pipe joint 2 Synthetic resin pipe 11 Socket 12 Heating wire 3a Female screw 3b Male screw

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 管継手（１）の一端部に設けた受口（１
１）の内周面に電熱線（１２）を所定間隔で螺旋状に埋
設し、該受口（１１）内に合成樹脂管（２）の端部を嵌
挿してから前記電熱線（１２）を発熱させて受口（１
１）の内周面と合成樹脂管（２）の端部外周面とを溶融
させて融着接合する電熱線（１２）を内蔵した管継手で
あって、電熱線（１２）が埋設されていない受口（１
１）の奥部内周面に雌ねじ（３ａ）を設けると共に合成
樹脂管（２）の先端部外周面に雄ねじ（３ｂ）を設け、
前記管継手（１）の雌ねじ（３ａ）と合成樹脂管（２）
の雄ねじ（３ｂ）を螺合させて両者を固定してから電熱
線（１２）を発熱させて受口（１１）の内周面と合成樹
脂管（２）の端部外周面とを融着接合することを特徴と
する電熱線を内蔵した管継手の接続装置。A socket (1) provided at one end of a pipe joint (1).
A heating wire (12) is helically embedded at a predetermined interval on the inner peripheral surface of 1), and an end of a synthetic resin pipe (2) is inserted into the receiving port (11), and then the heating wire (12) is inserted. To generate heat and
A pipe joint having a built-in heating wire (12) for melting the inner peripheral surface of (1) and the outer peripheral surface of the end portion of the synthetic resin pipe (2) and fusing them together, wherein the heating wire (12) is embedded. No socket (1
A female screw (3a) is provided on the inner peripheral surface of the inner part of (1), and a male screw (3b) is provided on the outer peripheral surface of the distal end of the synthetic resin pipe (2).
Female thread (3a) of the pipe joint (1) and synthetic resin pipe (2)
The external heating screw (3b) is screwed together to fix them, and then the heating wire (12) is heated to fuse the inner peripheral surface of the receptacle (11) and the outer peripheral surface of the end of the synthetic resin pipe (2). A pipe joint connecting device incorporating a heating wire, which is characterized by joining.
JP2001288696A 2001-09-21 2001-09-21 Connecting device for pipe joint with built-in heating wire Pending JP2002188787A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001288696A JP2002188787A (en) 2001-09-21 2001-09-21 Connecting device for pipe joint with built-in heating wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001288696A JP2002188787A (en) 2001-09-21 2001-09-21 Connecting device for pipe joint with built-in heating wire

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP11497192A Division JP3258369B2 (en) 1992-05-07 1992-05-07 Pipe joint connection device with built-in heating wire

Publications (1)

Publication Number Publication Date
JP2002188787A true JP2002188787A (en) 2002-07-05

Family

ID=19111301

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001288696A Pending JP2002188787A (en) 2001-09-21 2001-09-21 Connecting device for pipe joint with built-in heating wire

Country Status (1)

Country Link
JP (1) JP2002188787A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009228761A (en) * 2008-03-21 2009-10-08 Jfe Pipe Fitting Mfg Co Ltd Pipe coupling

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009228761A (en) * 2008-03-21 2009-10-08 Jfe Pipe Fitting Mfg Co Ltd Pipe coupling

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