JPH08152090A - Electric fusion joint - Google Patents

Electric fusion joint

Info

Publication number
JPH08152090A
JPH08152090A JP6294719A JP29471994A JPH08152090A JP H08152090 A JPH08152090 A JP H08152090A JP 6294719 A JP6294719 A JP 6294719A JP 29471994 A JP29471994 A JP 29471994A JP H08152090 A JPH08152090 A JP H08152090A
Authority
JP
Japan
Prior art keywords
joint body
thermoplastic resin
union nut
pipes
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
JP6294719A
Other languages
Japanese (ja)
Inventor
Shingo Nishikawa
真午 西川
Kenji Mizukawa
賢司 水川
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 JP6294719A priority Critical patent/JPH08152090A/en
Publication of JPH08152090A publication Critical patent/JPH08152090A/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
    • B29C66/01—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
    • 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
    • B29C65/56—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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • 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
    • B29C66/52298—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
    • 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"
    • B29C65/3468—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 means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings

Landscapes

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

Abstract

PURPOSE: To easily connect together thermoplastic resin pipes even if the gap between them is narrow by connecting joint main bodies to the thermoplastic resin pipes through a union nut, and electrification fusing them together. CONSTITUTION: A union nut 4 is inserted on the extreme ends of joint main bodies 2, 3 connected to thermoplastic resin pipes (pipes), and the pipes are inserted into the other end parts 22, 32 of the joint main bodies 2, 3. When there is no gap between the pipes to be connected and they cannot move in the axial direction of the pipe, both extreme ends are a little shifted in the lateral direction so as to respectively insert in them. The flange 43 of union nut 4 is locked with the flange of one end part of the joint main body 3, and hence the joint main bodies 23 can be connected together. Next heating wires 24, 34 are electrified, the inner circumferential faces of the other end parts 22, 32 of the joint main bodies 2, 3 are fused, and hence the main bodies 2, 3 and the pipes can be respectively fusedly fitted together. In this way, an electric fusion joint is constituted of the main bodies, the union nut, and packing, the number of parts is a few, connection is possible even if the pipes cannot move in the axial direction of pipe, and hence it is suitable for connection of existing pipes.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は電気融着継手に関する。FIELD OF THE INVENTION The present invention relates to an electrofusion joint.

【０００２】[0002]

【従来の技術】従来の電気融着継手は、特開平６−２３
８４６号公報に記載あるように、両端部に受け口が設け
られた熱可塑性樹脂製の筒状体で、この両方の受け口の
内周面に沿って螺旋状の電熱線が設けられているもので
あって、この両方の受け口の中に接続する２本の熱可塑
性樹脂製管の管端をそれぞれ挿入し、電熱線に通電し加
熱することにより、熱可塑性樹脂製の電気融着継手の内
周面と、熱可塑性樹脂製管の外周面とを融着させて接続
するものである。2. Description of the Related Art A conventional electric fusion joint is disclosed in Japanese Patent Laid-Open No. 6-23.
As described in Japanese Patent Publication No. 846, a tubular body made of a thermoplastic resin having receiving ports provided at both ends, and spiral heating wires are provided along the inner peripheral surfaces of both receiving ports. By inserting the ends of the two thermoplastic resin pipes that are connected to both of these receiving ports and energizing the heating wire to heat it, the inner circumference of the thermoplastic fusion bonding The surface and the outer peripheral surface of the thermoplastic resin pipe are fused and connected.

【０００３】又、金属管と熱可塑性樹脂製管とを接続す
る電気融着継手としては、実開平５−６２７９７号公報
記載のように、一端部に外側に突出した鍔が設けられ、
他端部の内周面に沿って螺旋状の電熱線が設けられた継
手本体と、一端部に内側に突出した鍔が設けられ、他端
部の内周面に沿って螺旋状のネジ山が設けられたユニオ
ンナットとからなり、ユニオンナットの鍔が継手本体の
鍔に係止されて、継手本体とユニオンナットとが接続さ
れているものが知られている。この電気融着継手は継手
本体の他端部の中に熱可塑性樹脂製管を挿入し、電熱線
に通電して継手本体と熱可塑性樹脂製管とを接続した
後、ユニオンナットの他端部に、外周面にネジ山が設け
られた金属管を挿入し、ユニオンナットを回転させて金
属管にユニオンナットを螺入することによって、熱可塑
性樹脂管と金属管とを接続するものである。Further, as an electric fusion joint for connecting a metal pipe and a thermoplastic resin pipe, as described in Japanese Utility Model Laid-Open No. 5-62797, a flange protruding outward is provided at one end.
A joint body provided with a spiral heating wire along the inner peripheral surface of the other end, and a flange protruding inward at one end, and a spiral screw thread along the inner peripheral surface of the other end. It is known that the union nut is provided with the union nut, and the collar of the union nut is locked to the collar of the joint body to connect the joint body and the union nut. In this electrofusion joint, a thermoplastic resin tube is inserted into the other end of the joint body, the heating wire is energized to connect the joint body and the thermoplastic resin pipe, and then the other end of the union nut. A metal pipe having a screw thread on the outer peripheral surface is inserted into the above, and the union nut is rotated to screw the union nut into the metal pipe, thereby connecting the thermoplastic resin pipe and the metal pipe.

【０００４】又、特開平５−２４８５８６号公報記載の
ように、一端部に外側に突出している鍔が設けられ、他
端部の内周面に沿って螺旋状の電熱線が設けられた左側
継手本体と、同じく、一端部に外側に突出している鍔が
設けられ、他端部の内周面に沿って螺旋状の電熱線が設
けられた右側継手本体と、鍔を係止させる端面を有し、
外周面にネジ山が設けられた押さえナットと、両端部に
それぞれ、この押さえナットのネジ山に螺合するネジ山
が内周面に設けられた継手体とからなる電気融着継手も
知られている。この電気融着継手は、右側継手本体と左
側継手本体の中にそれぞれ熱可塑性樹脂管を挿入し、継
手体の両側と左側継手本体や右側継手本体との間にパッ
キンを挟んで当接させ、両側からそれぞれ別々の押さえ
ナットを右側継手本体と継手体との間と、左側継手本体
と継手体との間とに螺入して両者を接続した後、電熱線
に通電して右側継手本体と熱可塑性樹脂製管とを、又、
左側継手本体と熱可塑性樹脂製管とをそれぞれ融着して
熱可塑性樹脂製管と熱可塑性樹脂製管とを接続するので
ある。Further, as described in JP-A-5-248586, the left side is provided with a flange projecting outward at one end and a spiral heating wire along the inner peripheral surface of the other end. Similarly to the joint main body, a flange protruding outward is provided at one end, and a right joint main body provided with a spiral heating wire along the inner peripheral surface of the other end, and an end face for locking the flange. Have,
There is also known an electric fusion joint including a holding nut having a thread provided on the outer peripheral surface and a joint body having threaded threads on the inner peripheral surface, which are screwed into the thread of the holding nut at both ends. ing. This electric fusion-bonding joint inserts a thermoplastic resin tube into each of the right-side joint body and the left-side joint body, and puts a packing between both sides of the joint body and the left-side joint body or the right-side joint body to bring them into contact with each other. After screwing separate holding nuts from both sides into the space between the right joint body and the joint body and between the left joint body and the joint body, the two are connected, and then the heating wire is energized to connect to the right joint body. A thermoplastic resin tube,
The left joint body and the thermoplastic resin pipe are fused together to connect the thermoplastic resin pipe and the thermoplastic resin pipe.

【０００５】[0005]

【発明が解決しようとする課題】しかし、実開平６−２
３８４６号公報記載の電気融着継手は熱可塑性樹脂製管
の先端に次々と新しい熱可塑性樹脂製管を継ぎ足して行
くときには便利であるが、既に敷設されている熱可塑性
樹脂同士を接続するときには不便である。即ち、既に敷
設されている熱可塑性樹脂同士を接続するときには、接
続する熱可塑性樹脂製管との間に、両端部に受け口が設
けられている電気融着継手を挿入するだけの隙間がない
し、両方の熱可塑性樹脂製管を管軸方向に移動させるこ
とができないから、熱可塑性樹脂製管に電気融着継手を
取り付けることができない。[Problems to be Solved by the Invention] However, the actual Kaihei 6-2
The electric fusion joint described in Japanese Patent No. 3846 is convenient when adding new thermoplastic resin pipes to the ends of the thermoplastic resin pipes one after another, but it is inconvenient when connecting already laid thermoplastic resins. Is. That is, when connecting the thermoplastic resin already laid, between the thermoplastic resin pipes to be connected, there is no gap enough to insert the electric fusion joint having the receptacle at both ends, Since both thermoplastic resin pipes cannot be moved in the pipe axial direction, the electric fusion joint cannot be attached to the thermoplastic resin pipes.

【０００６】又、実開平５−６２７９７号公報記載の電
気融着継手は熱可塑性樹脂製管と金属管とを接続すると
きに便利であって、熱可塑性樹脂製管同士を接続し難
い。The electric fusion joint described in Japanese Utility Model Laid-Open No. 5-62797 is convenient when connecting a thermoplastic resin pipe and a metal pipe, and it is difficult to connect the thermoplastic resin pipes together.

【０００７】又、特開平５−２４５８６号公報記載の電
気融着継手は、接続する熱可塑性樹脂製管同士の間が狭
くても電気融着継手を挿入することができるので、既に
敷設されている熱可塑性樹脂製管を接続することができ
便利であるが、複雑で多数の部品を使用するために、施
工方法が煩瑣であるし、部品の製造や管理が煩瑣である
という問題がある。そこで、本発明の目的は、部品点数
が少なく、接続する熱可塑性樹脂製管の間が狭くても容
易に接続することができる電気融着継手を提供すること
である。The electric fusion joint described in JP-A-5-24586 can be inserted even if the space between the thermoplastic resin pipes to be connected is small, so that the electric fusion joint has already been laid. It is convenient to connect existing thermoplastic resin pipes, but there are problems that the construction method is complicated and manufacturing and management of the parts are complicated because a large number of complicated parts are used. Therefore, an object of the present invention is to provide an electric fusion joint that has a small number of parts and can be easily connected even when the thermoplastic resin pipes to be connected are narrow.

【０００８】[0008]

【課題を解決するための手段】本発明は上記目的を達成
するためになしたものであって、一端部の外周面に沿っ
て螺旋状のネジ山が設けられ、内周面に沿って螺旋状の
電熱線が設けられ、この電熱線の両端に接続されている
通電ターミナルが外周面に設けられている筒状の左側継
手本体と、一端部に外側に突出している鍔が設けられ、
内周面に沿って螺旋状の電熱線が設けられ、この電熱線
の両端に接続されている通電ターミナルが外周面に設け
られている筒状の右側継手本体と、一端部に内側に突出
している鍔が設けられ、他端部の内周面に沿って螺旋状
のネジ山が設けられているユニオンナットとからなる電
気融着継手であって、左側継手本体の端面と右側継手本
体の端面との間にパッキンが挟まれ、ユニオンナットの
鍔が右側継手本体の鍔に係止され、ユニオンナットのネ
ジ山が左側継手本体のネジ山に螺入されて、左側継手本
体と右側継手本体とが接続されているものである。SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, in which a spiral thread is provided along the outer peripheral surface of one end and the spiral thread is formed along the inner peripheral surface. -Shaped heating wire is provided, and a cylindrical left side joint main body having energization terminals connected to both ends of the heating wire on the outer peripheral surface, and a brim protruding outward at one end,
A spiral heating wire is provided along the inner peripheral surface, and a tubular right joint body is provided on the outer peripheral surface with energizing terminals connected to both ends of this heating wire, and one end projecting inward. An electric fusion joint comprising a flange and a union nut having spiral threads along the inner peripheral surface of the other end, the end surface of the left joint body and the end surface of the right joint body. The packing is sandwiched between and, the collar of the union nut is locked to the collar of the right joint body, the screw thread of the union nut is screwed into the screw thread of the left joint body, and the left joint body and the right joint body are connected. Is connected.

【０００９】[0009]

【作用】本発明電気融着継手の使用方法を説明しながら
作用について説明する。本発明電気融着継手は、左側継
手本体の他端部と右側継手本体の他端部の中にそれぞれ
接続する熱可塑性樹脂管の端部を挿入し、左側継手本体
の端面と右側継手本体の端面との間にパッキンを挟み、
右側継手本体の一端部の鍔にユニオンナットの一端部の
鍔を係止させて、ユニオンナットの他端部に左側継手本
体の一端部を挿入し、ユニオンナットを回転させて、ユ
ニオンナットの一端部を左側継手本体の一端部に螺入し
て右側継手本体と左側継手本体とを接続した後、電熱線
に通電して右側継手本体と熱可塑性樹脂製管とを、又、
左側継手本体と熱可塑性樹脂製管とをそれぞれ融着させ
て熱可塑性樹脂製管と熱可塑性樹脂製管とを接続するの
である。The operation will be described while explaining the method of using the electric fusion joint of the present invention. The electric fusion joint of the present invention, the other end of the left joint body and the other end of the right joint body are inserted into the ends of the thermoplastic resin pipes respectively connected, the end face of the left joint body and the right joint body. Insert packing between the end face,
Engage one end of the union nut with the flange of one end of the right joint body, insert one end of the left joint body into the other end of the union nut, and rotate the union nut to rotate one end of the union nut. After connecting the part to one end of the left side joint body to connect the right side joint body and the left side joint body, the heating wire is energized to connect the right side joint body and the thermoplastic resin pipe,
The left joint body and the thermoplastic resin pipe are fused together to connect the thermoplastic resin pipe and the thermoplastic resin pipe.

【００１０】尚、上記方法は右側継手本体と左側継手本
体とをユニオンナットで接続した後に通電して右側継手
本体と熱可塑性樹脂製管とを、又、左側継手本体と熱可
塑性樹脂製管とをそれぞれ融着させたが、先に、熱可塑
性樹脂製管と右側継手本体とを、又、熱可塑性樹脂製管
と左側継手本体とをそれぞれ融着させて接続した後に、
ユニオンナットで右側継手本体と左側継手本体とを接続
してもよい。このように、ユニオンナットで左側継手本
体と右側継手本体とを接続した後、左側継手本体と熱可
塑性樹脂製管とを、又、右側継手本体と熱可塑性樹脂製
管とを融着させて接続するか、左側継手本体と熱可塑性
樹脂製管とを、又、右側継手本体と熱可塑性樹脂製管と
を融着させて接続した後、ユニオンナットで右側継手本
体と左側継手本体とを接続させるだけであるから施工が
簡単である。In the above method, the right joint body and the left joint body are connected with a union nut and then energized to connect the right joint body and the thermoplastic resin pipe, or the left joint body and the thermoplastic resin pipe. Were respectively fused, first, the thermoplastic resin pipe and the right side joint body, also, after the thermoplastic resin pipe and the left side joint body are respectively fused and connected,
You may connect a right side joint main body and a left side joint main body with a union nut. In this way, after connecting the left side joint body and the right side joint body with the union nut, the left side joint body and the thermoplastic resin pipe are fused and the right side joint body and the thermoplastic resin pipe are fused and connected. Or the left joint body and the thermoplastic resin pipe, and the right joint body and the thermoplastic resin pipe are fused and connected, and then the union nut connects the right joint body and the left joint body. Because it is only, construction is easy.

【００１１】又、本発明電気融着継手は右側継手本体と
左側継手本体とユニオンナットとパッキンからなるから
部品の点数が少なく、製造や保管に便利である。又、左
側継手本体と右側継手本体とを接続してユニオンナット
を螺入して接続した後に、左側継手本体と熱可塑性樹脂
製管とを、又、右側継手本体と熱可塑性樹脂製管とを融
着させて、熱可塑性樹脂製管を接続すると、両方の熱可
塑性樹脂製管を管軸方向に移動させることなく接続でき
る。従って、既設の熱可塑性樹脂製管を接続するのに適
している。Further, since the electric fusion-bonding joint of the present invention comprises the right joint body, the left joint body, the union nut and the packing, the number of parts is small and it is convenient for manufacture and storage. Also, after connecting the left joint body and the right joint body and screwing in the union nuts, connect the left joint body and the thermoplastic resin pipe, or the right joint body and the thermoplastic resin pipe. By fusing and connecting the thermoplastic resin pipes, both thermoplastic resin pipes can be connected without moving in the pipe axis direction. Therefore, it is suitable for connecting an existing thermoplastic resin pipe.

【００１２】[0012]

【実施例】次に、本発明の実施例を説明する。図１は本
発明の一実施例を示すもので、電気融着継手の断面図で
ある。Next, embodiments of the present invention will be described. FIG. 1 shows an embodiment of the present invention and is a sectional view of an electric fusion joint.

【００１３】図１において、１は電気融着継手であり、
この電気融着継手１は左側継手本体２と右側継手本体３
とユニオンナット４とパッキン５とからなる。左側継手
本体２は熱可塑性樹脂製の筒状体であり、この筒状体の
一端部２１の外周面に沿って螺旋状のネジ山２３が設け
られ、他端部２２の内周面に沿って螺旋状のニクロム線
からなる電熱線２４が設けられている。又、この電熱線
２４の両端はそれぞれ外周面に設けられている通電ター
ミナル２５、２５（この２個の内の１個の通電ターミナ
ルは図示されてない）に接続されている。In FIG. 1, 1 is an electric fusion joint,
This electric fusion joint 1 includes a left side joint body 2 and a right side joint body 3.
And a union nut 4 and a packing 5. The left joint body 2 is a tubular body made of a thermoplastic resin, and a spiral screw thread 23 is provided along the outer peripheral surface of one end portion 21 of the tubular body, and along the inner peripheral surface of the other end portion 22. A heating wire 24 made of spiral nichrome wire is provided. Both ends of the heating wire 24 are connected to energization terminals 25, 25 (one of the two energization terminals is not shown) provided on the outer peripheral surface.

【００１４】右側継手本体３は熱可塑性樹脂製の筒状体
であり、この筒状体の一端部３１に外側に突出している
鍔３３が設けられ、他端部３２の内周面に沿って螺旋状
のニクロム線からなる電熱線３４が設けられている。
又、この電熱線３４の両端はそれぞれ外周面に設けられ
ている通電ターミナル３５、３５（この２個の内の１個
の通電ターミナルは図示されてない）に接続されてい
る。The right joint body 3 is a tubular body made of a thermoplastic resin. One end portion 31 of the tubular body is provided with a flange 33 projecting outward, and the other end portion 32 is provided with an inner peripheral surface. A heating wire 34 made of a spiral nichrome wire is provided.
Further, both ends of the heating wire 34 are connected to energization terminals 35, 35 (one of the two energization terminals is not shown) provided on the outer peripheral surface.

【００１５】ユニオンナット４は一端部４１に内側に突
出している鍔４３が設けられ、他端部４２の内周面に沿
って螺旋状のネジ山４４が設けられている。パッキン５
は左側継手本体２の端面や右側継手本体３の端面とほぼ
同じ形状をしている合成ゴムからなる環状体である。The union nut 4 is provided with a flange 43 projecting inward at one end 41 and a spiral thread 44 along the inner peripheral surface of the other end 42. Packing 5
Is an annular body made of synthetic rubber and having substantially the same shape as the end surface of the left joint body 2 and the end surface of the right joint body 3.

【００１６】次に、この電気融着継手を使用して熱可塑
性樹脂製管を接続する方法について説明する。予め、右
側継手本体３を接続する一方の熱可塑性樹脂製管の先端
に、ユニオンナット４を鍔４３側から挿入しておく。次
に、左側継手本体２の他端部２２と右側継手本体３の他
端部３２の中にそれぞれ接続する熱可塑性樹脂管を挿入
する。この作業は既設の熱可塑性樹脂製管を接続すると
きのように、接続する熱可塑性樹脂製管の間にほとんど
隙間がなく、しかも、管軸方向に移動させることができ
ないときには、両方の先端を横方向に少しずらして、一
方の熱可塑性樹脂製管の先端に左側継手本体２の他端部
２２を、又、他方の熱可塑性樹脂製管の先端に右側継手
本体３の他端部３３を、それぞれ挿入する。Next, a method for connecting thermoplastic resin pipes using this electric fusion joint will be described. In advance, the union nut 4 is inserted from the flange 43 side into the tip of one thermoplastic resin tube connecting the right joint body 3. Next, the thermoplastic resin pipes to be connected are inserted into the other end portion 22 of the left joint body 2 and the other end portion 32 of the right joint body 3, respectively. This work is similar to when connecting an existing thermoplastic resin pipe, there is almost no gap between the thermoplastic resin pipes to be connected, and when both ends cannot be moved in the pipe axis direction, both ends are The other end 22 of the left joint body 2 is attached to the tip of one thermoplastic resin pipe, and the other end 33 of the right joint body 3 is attached to the other end of the thermoplastic resin pipe. , Insert each.

【００１７】その後、左側継手本体２の端面と右側継手
本体３の端面との間にパッキン５を挟みながら両方の継
手本体２、３をほぼ一直線状にし、熱可塑性樹脂製管の
先端に挿入しているユニオンナット４をこの接続部方向
にずらし、ユニオンナット４の他端部４２を左側継手本
体２の一端部２１に当接させ、ユニオンナット４を回転
させて、ユニオンナット４の一端部４１を左側継手本体
２の一端部２１のネジ山２３に螺入する。すると、右側
継手本体の一端部の鍔にユニオンナット４の一端部４１
の鍔４３が係止して、右側継手本体３と左側継手本体２
とが接続できる。After that, the packing bodies 5 are sandwiched between the end surface of the left joint body 2 and the end surface of the right joint body 3, and both joint bodies 2 and 3 are made substantially straight and inserted into the tip of the thermoplastic resin pipe. The union nut 4 is displaced toward this connecting portion, the other end 42 of the union nut 4 is brought into contact with the one end 21 of the left joint main body 2, and the union nut 4 is rotated so that the one end 41 of the union nut 4 is rotated. Is screwed into the thread 23 of the one end 21 of the left joint body 2. Then, one end portion 41 of the union nut 4 is attached to the collar at one end portion of the right joint body.
43 of the right side joint body 3 and the left side joint body 2 are locked.
And can be connected.

【００１８】次に、通電ターミナル２５、２５を電源に
接続し、電熱線２４、３４に通電する。すると、右側継
手本体３の他端部３２の内周面と、左側継手本体２の他
端部２２の内周面が溶融して、右側継手本体３と熱可塑
性樹脂製管とが、又、左側継手本体２と熱可塑性樹脂製
管とがそれぞれ融着して、熱可塑性樹脂製管と熱可塑性
樹脂製管とが接続する。このように、既設の熱可塑性樹
脂製管と熱可塑性樹脂製管との間にほとんど隙間がな
く、管軸方向に移動できない場合にも簡単に接続でき
る。Next, the energizing terminals 25, 25 are connected to a power source to energize the heating wires 24, 34. Then, the inner peripheral surface of the other end portion 32 of the right joint body 3 and the inner peripheral surface of the other end portion 22 of the left joint body 2 melt, and the right joint body 3 and the thermoplastic resin pipe are The left joint body 2 and the thermoplastic resin pipe are fused together, and the thermoplastic resin pipe and the thermoplastic resin pipe are connected. In this way, there is almost no gap between the existing thermoplastic resin pipe and the thermoplastic resin pipe, and even if the pipe cannot be moved in the pipe axial direction, connection can be easily performed.

【００１９】尚、接続する熱可塑性樹脂製管の隙間があ
る場合には、上記方法のように、熱可塑性樹脂製管に左
側継手本体２や右側継手本体３をユニオンナット４で接
続した後、通電して熱可塑性樹脂製管と左側継手本体２
や右側継手本体３を融着してもよいし、予め、熱可塑性
樹脂に左側継手本体２や右側継手本体３を融着して接続
した後、ユニオンナット４で左側継手本体２と右側継手
本体３とを接続してもよい。If there is a gap between the thermoplastic resin pipes to be connected, after connecting the left joint body 2 and the right joint body 3 with the union nut 4 to the thermoplastic resin pipe as in the above method, When energized, the thermoplastic resin pipe and the left joint body 2
Or the right joint body 3 may be fused, or the left joint body 2 and the right joint body 3 may be fused and connected to the thermoplastic resin in advance, and then the left joint body 2 and the right joint body may be joined with the union nut 4. 3 may be connected.

【００２０】[0020]

【発明の効果】本発明電気融着継手は、熱可塑性樹脂製
管に左側継手本体や右側継手本体をユニオンナットで接
続した後、通電して熱可塑性樹脂製管と左側継手本体や
右側継手本体を融着して熱可塑性樹脂製管を接続した
り、予め、熱可塑性樹脂に左側継手本体や右側継手本体
を融着して接続した後、ユニオンナットで左側継手本体
と右側継手本体とを接続して熱可塑性樹脂製管を接続で
きるので、熱可塑性樹脂製管を接続する施工方法が簡単
である。EFFECTS OF THE INVENTION The electric fusion-bonded joint of the present invention has a structure in which the left joint body and the right joint body are connected to the thermoplastic resin pipe with a union nut, and then the electric current is applied to the thermoplastic resin pipe and the left joint body and the right joint body After connecting the thermoplastic resin pipe by welding, or by connecting the left joint body and the right joint body to the thermoplastic resin in advance, connect the left joint body and the right joint body with the union nut. Since the thermoplastic resin pipes can be connected to each other, the construction method for connecting the thermoplastic resin pipes is simple.

【００２１】又、本発明電気融着継手は右側継手本体と
左側継手本体とユニオンナットとパッキンとからなるか
ら、部品点数が少なく、製造や保管に便利である。又、
左側継手本体と右側継手本体とユニオンナットで接続し
た後、熱可塑性樹脂製管に左側継手本体と右側継手本体
とを接続すると、管軸方向に移動できなくても接続でき
る。従って、既設の熱可塑性樹脂製管を接続するのに適
している。Further, since the electric fusion splicing joint of the present invention comprises the right joint body, the left joint body, the union nut and the packing, the number of parts is small and it is convenient for manufacturing and storing. or,
If the left joint body and the right joint body are connected with the union nut and then the left joint body and the right joint body are connected to the thermoplastic resin pipe, the connection can be made even if the pipe joint cannot move in the axial direction. Therefore, it is suitable for connecting an existing thermoplastic resin pipe.

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

【図１】本発明の一実施例を示すもので、電気融着継手
の断面図である。FIG. 1 is a cross-sectional view of an electric fusion joint, showing an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１ 電気融着継手 ２ 左側継手本体 ２１ 一端部 ２２ 他端部 ２３ ネジ山 ２４ 電熱線 ２５ 通電ターミナル ３ 右側継手本体 ３１ 一端部 ３２ 他端部 ３３ 鍔 ３４ 電熱線 ３５ 通電ターミナル ４ ユニオンナット ４１ 一端部 ４２ 他端部 ４３ 鍔 ４４ ネジ山 ５ パッキン DESCRIPTION OF SYMBOLS 1 Electrofusion joint 2 Left side joint main body 21 One end 22 The other end 23 Screw thread 24 Electric heating wire 25 Energizing terminal 3 Right side joint body 31 One end 32 The other end 33 Tsuba 34 Heating wire 35 Energizing terminal 4 Union nut 41 One end 42 other end 43 collar 44 screw thread 5 packing

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 一端部の外周面に沿って螺旋状のネジ山
が設けられ、内周面に沿って螺旋状の電熱線が設けら
れ、この電熱線の両端に接続されている通電ターミナル
が外周面に設けられている筒状の左側継手本体と、一端
部に外側に突出している鍔が設けられ、内周面に沿って
螺旋状の電熱線が設けられ、この電熱線の両端に接続さ
れている通電ターミナルが外周面に設けられている筒状
の右側継手本体と、一端部に内側に突出している鍔が設
けられ、他端部の内周面に沿って螺旋状のネジ山が設け
られているユニオンナットとからなる電気融着継手であ
って、左側継手本体の端面と右側継手本体の端面との間
にパッキンが挟まれ、ユニオンナットの鍔が右側継手本
体の鍔に係止され、ユニオンナットのネジ山が左側継手
本体のネジ山に螺入されて、左側継手本体と右側継手本
体とが接続されていることを特徴とする電気融着継手。1. A spiral screw thread is provided along an outer peripheral surface of one end portion, a spiral heating wire is provided along an inner peripheral surface, and an energization terminal connected to both ends of the heating wire is provided. A cylindrical left side joint body provided on the outer peripheral surface and a flange protruding outward at one end are provided, and a spiral heating wire is provided along the inner peripheral surface and connected to both ends of this heating wire. A cylindrical right joint body with an energized terminal on the outer peripheral surface and a flange protruding inward at one end are provided, and a spiral thread is formed along the inner peripheral surface at the other end. An electric fusion joint consisting of a provided union nut, packing is sandwiched between the end face of the left joint body and the end face of the right joint body, and the collar of the union nut is locked to the collar of the right joint body. The union nut thread is screwed into the left joint body thread. And the left joint body and the right joint body are connected to each other.
JP6294719A 1994-11-29 1994-11-29 Electric fusion joint Pending JPH08152090A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6294719A JPH08152090A (en) 1994-11-29 1994-11-29 Electric fusion joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6294719A JPH08152090A (en) 1994-11-29 1994-11-29 Electric fusion joint

Publications (1)

Publication Number Publication Date
JPH08152090A true JPH08152090A (en) 1996-06-11

Family

ID=17811429

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6294719A Pending JPH08152090A (en) 1994-11-29 1994-11-29 Electric fusion joint

Country Status (1)

Country Link
JP (1) JPH08152090A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100688997B1 (en) * 2006-02-06 2007-03-08 주식회사 태일 Fitting for electric fusion with pressing device using screw
KR100746980B1 (en) * 2007-01-29 2007-08-07 주식회사 태일 Electric fusion piping materials with screw pressing device
WO2007091799A1 (en) * 2006-02-06 2007-08-16 Taeil Co., Ltd. Electric fusion piping materials with screw pressing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100688997B1 (en) * 2006-02-06 2007-03-08 주식회사 태일 Fitting for electric fusion with pressing device using screw
WO2007091799A1 (en) * 2006-02-06 2007-08-16 Taeil Co., Ltd. Electric fusion piping materials with screw pressing device
US7798531B2 (en) 2006-02-06 2010-09-21 Taeil Co., Ltd. Electric fusion piping materials with screw pressing device
KR100746980B1 (en) * 2007-01-29 2007-08-07 주식회사 태일 Electric fusion piping materials with screw pressing device

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