JPH084974A - Electrically fusible joint - Google Patents
Electrically fusible jointInfo
- Publication number
- JPH084974A JPH084974A JP6131704A JP13170494A JPH084974A JP H084974 A JPH084974 A JP H084974A JP 6131704 A JP6131704 A JP 6131704A JP 13170494 A JP13170494 A JP 13170494A JP H084974 A JPH084974 A JP H084974A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- thermoplastic resin
- electric fusion
- joint
- fusion 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
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
- B29C66/53—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"
- B29C65/3404—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
- 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
- B29C66/01—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
- B29C66/1226—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 one bevelled 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
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Pipe Accessories (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は熱可塑性樹脂製管の接続
に使用する電気融着継手に関する。更に詳細には、短管
の両端部に受け口が設けられ、この受け口の内周面に電
気発熱素子が埋設されている電気融着継手に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric fusion joint used for connecting thermoplastic resin pipes. More specifically, the present invention relates to an electric fusion joint in which receiving ports are provided at both ends of a short pipe, and an electric heating element is embedded in an inner peripheral surface of the receiving port.
【0002】[0002]
【従来の技術】熱可塑性樹脂製管を接続する管継手には
種々あるが、その中に、特開平5−164288号公報
に記載されているように、端部に受け口が設けられ、こ
の受け口の内周面にニクロム線の如き電気発熱素子が埋
設されている電気融着継手が知られている。この電気融
着継手は受け口に熱可塑性樹脂製管の端部を挿入し、こ
の電気発熱素子に通電して、受け口の内周面と管の外周
面とを融着させて熱可塑性樹脂製管を接続するものであ
る。2. Description of the Related Art There are various types of pipe joints for connecting thermoplastic resin pipes. Among them, as described in JP-A-5-164288, a receiving end is provided at the end, and this receiving end is provided. There is known an electric fusion joint in which an electric heating element such as a nichrome wire is embedded on the inner peripheral surface of the. In this electric fusion joint, the end portion of the thermoplastic resin tube is inserted into the receiving port, the electric heating element is energized, and the inner peripheral surface of the receiving port and the outer peripheral surface of the pipe are fused to form a thermoplastic resin tube. Are to be connected.
【0003】一方、管路の途中まで施工していて、将
来、この管路を延長する予定の場所等には、配管施工時
に管の先端部を一時的に閉じておくことが多い。かかる
ときに使用されるものとしては、JIS−K−6743
に規定されているキャップがある。このキャップは管路
の先端に取り付けていて、将来、このキャップの手前か
ら管を切断し、この先に新しい管を接続して管路を延長
するのである。又、このキャップに替わるものとして、
実公平3−25505号公報に記載あるように、ソケッ
トの一方の受け口の先端部に蓋体を設けて受け口を塞い
でいる管継手が知られている。On the other hand, in many cases where the pipe is constructed halfway and the pipe is to be extended in the future, the tip of the pipe is often temporarily closed at the time of construction of the pipe. In this case, JIS-K-6743 is used.
There is a cap specified in. This cap is attached to the tip of the pipe line, and in the future, the pipe line will be cut by cutting the pipe from the front side of the cap and connecting a new pipe to the end. Also, as an alternative to this cap,
As described in Japanese Utility Model Publication No. 3-25505, there is known a pipe joint in which a lid is provided at one end of a socket to close the socket.
【0004】[0004]
【発明が解決しようとする課題】従来の電気融着継手は
通常の管継手であって、管路の先端を塞ぐときには使用
できない。又、JIS−K−6743に規定されている
キャップや上記公報に記載されている管継手は塩化ビニ
ル樹脂製管の如き接着し易い硬質管の管端を塞ぐときに
は使用できるが、ポリエチレン製管等のオレフィン系樹
脂製管の如く接着し難い弾性を有する管の先端を塞ぐに
は不適当である。即ち、一般に、オレフィン系樹脂製品
を接着剤で接着すると、この接着部分の機械的強度は他
の部分より弱いから、オレフィン系樹脂製管の先端にオ
レフィン系樹脂製キャップや上記公報記載の管継手で塞
いでも、管の内圧が増すと管が膨張して比較的機械的強
度の弱いキャップや管継手の接続部が剥がれて、この接
続部分から内部の液体等が漏れるという問題が生ずる。
そこで、本発明の目的は、オレフィン系樹脂製管の管端
を塞ぐときにも使用しても強固に閉じることができ、し
かも、この管路の先端に管を延長し易い電気融着継手を
提供することである。The conventional electric fusion splicing joint is an ordinary pipe joint and cannot be used when the tip of the pipe is closed. Also, the caps specified in JIS-K-6743 and the pipe joints described in the above publications can be used when closing the ends of hard pipes such as vinyl chloride resin pipes that are easily bonded, but polyethylene pipes, etc. It is unsuitable for closing the tip of a tube having elasticity that is difficult to bond like the olefin resin tube. That is, in general, when an olefin resin product is bonded with an adhesive, the mechanical strength of this bonded portion is weaker than other parts, so that the olefin resin cap or the pipe joint described in the above publication is attached to the tip of the olefin resin pipe. Even if it is closed with, if the internal pressure of the pipe increases, the pipe expands and the cap or the joint of the pipe joint, which has relatively weak mechanical strength, is peeled off, and the liquid inside leaks from the joint.
Therefore, an object of the present invention is to provide an electric fusion-bonding joint that can be firmly closed even when used when closing the pipe end of an olefin resin pipe, and that is easy to extend the pipe to the tip of this pipe line. Is to provide.
【0005】[0005]
【課題を解決するための手段】本発明は上記目的を達成
するためになされたものであって、請求項1の発明は、
短管の両端部に受け口が設けられ、この両端部の受け口
の内周面に電気発熱素子が埋設されている電気融着継手
において、一方の受け口の端部に蓋体が設けられて受け
口が塞がれているものである。The present invention has been made to achieve the above object, and the invention of claim 1 is as follows.
Receptacles are provided at both ends of the short pipe, and in the electric fusion joint in which electric heating elements are embedded in the inner peripheral surfaces of the receptacles at both ends, a lid is provided at the end of one of the receptacles to form the receptacle. It is blocked.
【0006】又、請求項2の発明は、請求項1記載の電
気融着継手であって、両端部の受け口の間に管の肉厚と
ほぼ等しい高さに突出しているストッパーが設けられて
いるものである。又、請求項3の発明は、請求項1また
は2記載の電気融着継手であって、受け口と蓋体との間
に肉薄にされている肉薄部が設けられているものであ
る。本発明電気融着継手の材質は接続する熱可塑性樹脂
製管と融着する材質であればいかなるものでもよいが、
熱可塑性樹脂製管と同じ材質が最も好ましい。Further, the invention of claim 2 is the electric fusion joint according to claim 1, wherein a stopper protruding at a height substantially equal to the wall thickness of the pipe is provided between the receiving ports of both ends. There is something. The invention according to claim 3 is the electric fusion joint according to claim 1 or 2, wherein a thinned portion is provided between the receiving port and the lid. The material of the electric fusion joint of the present invention may be any material as long as it is fused with the thermoplastic resin pipe to be connected,
Most preferably, the same material as the thermoplastic resin tube is used.
【0007】好ましい材質を示すと、ポリエチレンやポ
リプロピレンやポリブテン等のオレフィン系樹脂、ポリ
スチレン、ポリ塩化ビニル、ポリカーボネート、ポリフ
ェニレンサルファイド等を挙げることができる。特に、
オレフィン系樹脂が好適である。本発明に使用する電気
発熱素子とは、通電すると発熱するものをいい、ニクロ
ム線、鉄クロム線等の抵抗線が好適である。Preferred materials include olefin resins such as polyethylene, polypropylene and polybutene, polystyrene, polyvinyl chloride, polycarbonate and polyphenylene sulfide. In particular,
Olefinic resins are preferred. The electric heating element used in the present invention is one that generates heat when energized, and a resistance wire such as a nichrome wire or an iron chrome wire is suitable.
【0008】[0008]
【作用】本発明電気融着継手の施工方法を説明しながら
作用について説明する。管路の最終部分の熱可塑性樹脂
製管の端部を電気融着継手の開口している受け口の中に
挿入し、この受け口の内周面に埋設されている電気発熱
素子に通電する。すると、電気融着継手の受け口の内周
面が溶融し熱可塑性樹脂製管の外周面に融着する。この
ように電気融着継手を融着させると、融着してない側の
電気融着継手の受け口の端部には蓋体が設けられて受け
口が塞がれているから、管路の端部は塞がれる。又、電
気融着継手の内周面と熱可塑性樹脂製管の外周面とが融
着して一体となるから、強固に接続され熱可塑性樹脂製
管と電気融着継手とが剥離することがない。The operation will be described while explaining the method of constructing the electric fusion joint of the present invention. The end of the thermoplastic resin tube at the final portion of the pipe is inserted into the opening of the electric fusion joint, and the electric heating element embedded in the inner peripheral surface of the opening is energized. Then, the inner peripheral surface of the receptacle of the electric fusion joint is melted and fused to the outer peripheral surface of the thermoplastic resin pipe. When the electric fusion joint is fused in this manner, a lid is provided at the end of the receptacle of the electric fusion joint on the non-fusion side, and the receptacle is closed. The part is closed. In addition, since the inner peripheral surface of the electric fusion joint and the outer peripheral surface of the thermoplastic resin pipe are fused and integrated with each other, the thermoplastic resin pipe and the electric fusion joint may be separated firmly and separated from each other. Absent.
【0009】このように、管路の先端が塞がれるし、管
路の中を流体が通過し、この流体の圧力によって熱可塑
性樹脂製管が膨張しても管から電気融着継手が剥がれる
ことがない。特に、ポリエチレン等のオレフィン系樹脂
は接着し難いが融着し易いので、電気発熱素子に通電し
て本発明電気融着継手の受け口の内周面を溶融させてオ
レフィン系樹脂製管と接続させると極めて強固に接続で
きるから、オレフィン系樹脂製管の中を通過する流体の
圧力により管が膨張しても、オレフィン系樹脂製管と電
気融着継手とが剥がれることがない。In this way, the tip of the pipe is blocked, the fluid passes through the pipe, and even if the thermoplastic resin pipe expands due to the pressure of this fluid, the electrofusion joint is peeled from the pipe. Never. In particular, since an olefin resin such as polyethylene is difficult to adhere but is easily fused, the electric heating element is energized to melt the inner peripheral surface of the receptacle of the electric fusion joint of the present invention and connect it to the olefin resin pipe. Therefore, even if the pipe expands due to the pressure of the fluid passing through the olefin resin pipe, the olefin resin pipe and the electric fusion joint are not separated from each other.
【0010】次に、このようにして先端が塞がれている
管路を延長するときの施工方法について説明する。先
ず、電気融着継手の一方の端部に設けられている蓋体の
手前を切断して蓋体を取り除く。すると、電気融着継手
の受け口が顕れるから、この受け口の中に熱可塑性樹脂
製管の端部を挿入し、この受け口の内周面に設けられて
いる電気発熱素子に通電する。すると、この内周面が電
気発熱素子の発生する熱により溶融し、熱可塑性樹脂製
管の外周面と融着する。このように簡単に延長すること
ができる。Next, a construction method for extending the conduit whose tip is blocked in this way will be described. First, the front side of the lid provided at one end of the electric fusion joint is cut to remove the lid. Then, the receiving port of the electric fusion joint appears, so that the end of the thermoplastic resin tube is inserted into the receiving port and the electric heating element provided on the inner peripheral surface of the receiving port is energized. Then, the inner peripheral surface is melted by the heat generated by the electric heating element and fused with the outer peripheral surface of the thermoplastic resin tube. It can be easily extended in this way.
【0011】本発明においては管路を塞ぐときや、管路
を延長するときに、電気融着継手の受け口の中に熱可塑
性樹脂製管を挿入するが、請求項2の発明のように、両
端部の受け口の間にストッパーを設けていると、熱可塑
性樹脂製管の端面をこのストッパーに衝突するまで挿入
すればよいから、熱可塑性樹脂製管の接続工事が容易に
なる。又、本発明においては管路を延長するときに蓋体
を取り除くが、請求項3の発明のように、受け口と蓋体
との間に肉薄にされている肉薄部を設けていると、この
肉薄部を切断すればよいから切断し易い。According to the present invention, when the pipe is closed or the pipe is extended, the thermoplastic resin pipe is inserted into the receiving port of the electric fusion joint. If the stoppers are provided between the receiving ports at both ends, the end face of the thermoplastic resin pipe can be inserted until it collides with the stoppers, which facilitates the connection work of the thermoplastic resin pipes. Further, in the present invention, the lid is removed when the conduit is extended. However, as in the third aspect of the present invention, when a thinned portion is provided between the receiving port and the lid, It is easy to cut because it is enough to cut the thin part.
【0012】[0012]
【実施例】次に、本発明の実施例を説明する。図1およ
び図2は本発明の一実施例を示すもので、図1は電気融
着継手の断面を示す説明図、図2は図1の電気融着継手
を使用して熱可塑性樹脂製管を接続している状態を示す
もので、(イ)は受け口の中に管を挿入している状態を
示す説明図、(ロ)は電気融着継手と管とを接続した状
態を示す説明図、図3は管路を延長している状態を示す
もので、(イ)は蓋体を切断している状態を示す説明
図、(ロ)は管路を延長している状態を示す説明図であ
る。Next, embodiments of the present invention will be described. 1 and 2 show one embodiment of the present invention. FIG. 1 is an explanatory view showing a cross section of an electric fusion joint, and FIG. 2 is a thermoplastic resin pipe using the electric fusion joint of FIG. FIG. 3B shows a state in which the pipe is connected, (A) is an explanatory view showing a state where the pipe is inserted into the receiving port, and (B) is an explanatory view showing a state in which the electric fusion joint and the pipe are connected FIG. 3 shows a state in which the pipeline is extended, (a) is an explanatory view showing a state in which the lid body is cut, and (b) is an explanatory diagram showing a state in which the pipeline is extended. Is.
【0013】図1〜図3において、1はポリエチレン製
管からなる熱可塑性樹脂製管である。2はソケット型の
ポリエチレン製電気融着継手であり、この電気融着継手
2は両端部に受け口21、21が設けられ、この受け口
21の内周面22にニクロム線からなる電気発熱素子3
が埋設されている。この電気発熱素子3はターミナル3
1、31を電源に接続すると発熱し、電気融着継手2の
内周面22が溶融するようになっている。尚、この受け
口21は熱可塑性樹脂製管1の端部が挿入し易いように
入口方向が広くなるテーパーがついている。1 to 3, reference numeral 1 denotes a thermoplastic resin tube made of polyethylene. Reference numeral 2 denotes a socket-type polyethylene electric fusion-bonding joint. The electric fusion-bonding joint 2 is provided with receiving ports 21, 21 at both ends, and an electric heating element 3 made of a nichrome wire is provided on an inner peripheral surface 22 of the receiving port 21.
Is buried. This electric heating element 3 is a terminal 3
When 1 and 31 are connected to a power source, heat is generated and the inner peripheral surface 22 of the electric fusion joint 2 is melted. The receiving opening 21 is tapered so that the end of the thermoplastic resin tube 1 can be easily inserted into the receiving opening 21.
【0014】4は電気融着継手2の一方の端部に設けら
れた蓋体であり、この蓋体4によって一方の受け口21
が塞がれている。この蓋体4と受け口21との間には肉
薄にされている肉薄部41が設けられている。5は両側
の受け口21、21の間に管1の肉厚とほぼ等しい高さ
に突出しているストッパーである。Reference numeral 4 denotes a lid body provided at one end of the electric fusion joint 2, and the lid body 4 allows one of the receiving ports 21 to be provided.
Is blocked. A thinned portion 41, which is thinned, is provided between the lid 4 and the receiving port 21. Reference numeral 5 is a stopper that protrudes between the receiving ports 21 on both sides at a height approximately equal to the wall thickness of the tube 1.
【0015】次に、この電気融着継手で熱可塑性樹脂製
管を接続する方法について説明する。図2の(イ)に示
すように、電気融着継手2の端部に設けられている受け
口21の中に熱可塑性樹脂製管1を挿入する。この際、
両側の受け口21、21の間にはストッパー5が設けら
れているから、熱可塑性樹脂製管1はこのストッパー5
まで挿入すればよいから施工し易い。次に、ターミナル
31を電源に接続して通電する。すると、ターミナル3
1に接続されている電気発熱素子3が発熱し、この熱に
より電気融着継手2の受け口21の内周面22が溶融
し、図2の(ロ)に示すように、熱可塑性樹脂製管1の
端部外周面と電気融着継手2の内周面22とが一体に融
着する。Next, a method of connecting the thermoplastic resin pipes by this electric fusion joint will be described. As shown in FIG. 2A, the thermoplastic resin tube 1 is inserted into the receiving port 21 provided at the end of the electric fusion joint 2. On this occasion,
Since the stopper 5 is provided between the receiving ports 21 on both sides, the thermoplastic resin pipe 1 is provided with the stopper 5.
Easy to install as it can be inserted up to Next, the terminal 31 is connected to a power source and energized. Then Terminal 3
The electric heating element 3 connected to 1 heats, the inner peripheral surface 22 of the receiving port 21 of the electric fusion joint 2 is melted by this heat, and as shown in FIG. The outer peripheral surface of the end portion 1 and the inner peripheral surface 22 of the electric fusion joint 2 are integrally fused.
【0016】このように熱可塑性樹脂製管1と電気融着
継手2とが一体に融着すると、管路の先端は蓋体4によ
って塞がれる。又、この管路の中に流体が流れ、この流
体の内圧によって熱可塑性樹脂製管1が膨らんでも、電
気融着継手2が一体に融着し極めて強固に接続されてい
るから、熱可塑性樹脂製管1と電気融着継手2とが剥が
れるとがない。When the thermoplastic resin pipe 1 and the electric fusion joint 2 are integrally fused as described above, the end of the pipe line is closed by the lid 4. Further, even if the fluid flows in this pipe line and the thermoplastic resin pipe 1 swells due to the internal pressure of this fluid, the electric fusion-bonding joint 2 is integrally fused and connected very firmly. The pipe 1 and the electric fusion joint 2 will not come off.
【0017】次に、この管路を延長するときについて説
明する。図3の(イ)に示すように、蓋体4と受け口2
1との間に設けられている肉薄部41(点線で示す部
分)を切断して蓋体4を取り除く。このように肉薄部4
1を切断するから切断し易い。このように蓋体4を取り
除くと、内部から受け口21が顕れるから、この受け口
21に熱可塑性樹脂製管1の端部を受け口21の中に挿
入する。この際、ストッパー5が設けられているから、
熱可塑性樹脂製管1を入るまで挿入すればよく挿入し易
い。その後、ターミナル31を電源と接続し電気発熱素
子3に通電する。すると、電気融着継手2の受け口21
の内周面が溶融し、受け口21の内周面と熱可塑性樹脂
製管1の外周面とが融着し、強固に接続できる。このよ
うに簡単に管路を延長させることができる。Next, a description will be given of how to extend this conduit. As shown in FIG. 3A, the lid 4 and the receptacle 2
The thin portion 41 (the portion indicated by the dotted line) provided between the lid body 4 and 1 is cut to remove the lid 4. In this way, the thin part 4
Since 1 is cut, it is easy to cut. When the lid 4 is removed in this manner, the receiving port 21 is exposed from the inside, so that the end of the thermoplastic resin pipe 1 is inserted into the receiving port 21. At this time, since the stopper 5 is provided,
It is sufficient to insert the thermoplastic resin tube 1 until it is inserted, and it is easy to insert. After that, the terminal 31 is connected to a power source and the electric heating element 3 is energized. Then, the receptacle 21 of the electric fusion joint 2
The inner peripheral surface of is melted, and the inner peripheral surface of the receiving port 21 and the outer peripheral surface of the thermoplastic resin pipe 1 are fused and can be firmly connected. In this way, the conduit can be easily extended.
【0018】[0018]
【発明の効果】本発明電気融着継手では一方の受け口の
端部に蓋体が設けられて受け口が塞がれているから、反
対側の開口している受け口に熱可塑性樹脂製管を挿入し
融着させて、管路の端部を塞ぐことができる。又、電気
融着継手の受け口内周面と熱可塑性樹脂製管の外周面と
は強固に融着できるから、この接続部分から剥がれるこ
とがない。又、この蓋体を取り去ると、蓋体により塞が
れていた受け口が顕れるから、この受け口に熱可塑性樹
脂製管を接続することにより、簡単に、管路を延長する
ことができる。According to the electric fusion joint of the present invention, since the lid is provided at the end of one receiving port to close the receiving port, the thermoplastic resin pipe is inserted into the opening on the opposite side. Then, the ends of the conduit can be closed by fusion. Further, since the inner peripheral surface of the receiving end of the electric fusion joint and the outer peripheral surface of the thermoplastic resin tube can be firmly fused, they will not be separated from this connecting portion. Further, when the lid is removed, the receiving port closed by the lid is exposed. Therefore, by connecting the thermoplastic resin pipe to the receiving port, the pipeline can be easily extended.
【0019】又、このようにして管路を延長すると、取
り去った蓋体だけを廃棄処分すればよいから、従来のキ
ャップのようにキャップの手前の管を切断するより廃棄
処分する量が少なくなり、便利である。本発明におい
て、請求項2のように、両端部の受け口の間にストッパ
ーを設けていると、熱可塑性樹脂製管をこのストッパー
まで挿入すればよいから施工が極めて簡単になるので便
利である。本発明において、請求項3のように、受け口
と蓋体との間に肉薄部を設けていると、この蓋体を取り
去り易いので便利である。Further, when the pipe line is extended in this way, since only the removed lid body needs to be discarded, the amount to be discarded is smaller than the case of cutting the pipe in front of the cap as in the conventional cap. It's convenient. In the present invention, when the stoppers are provided between the receiving ports at both ends as in claim 2, it is convenient because the thermoplastic resin pipe can be inserted up to the stoppers, which makes the construction extremely simple. In the present invention, when the thin portion is provided between the receiving port and the lid as in claim 3, the lid can be easily removed, which is convenient.
【図1】本発明の一実施例を示すもので、電気融融着継
手の断面を示す説明図である。FIG. 1 shows an embodiment of the present invention and is an explanatory view showing a cross section of an electric fusion splicing joint.
【図2】図1の電気融着継手を使用して熱可塑性樹脂製
管を接続している状態を示すもので、(イ)は受け口の
中に管を挿入している状態を示す説明図、(ロ)は電気
融着継手と管とを接続した状態を示す説明図である。FIG. 2 is a view showing a state where a thermoplastic resin pipe is connected using the electric fusion joint of FIG. 1, and (a) is an explanatory view showing a state where the pipe is inserted into the receiving port. , (B) are explanatory views showing a state in which the electric fusion joint and the pipe are connected.
【図3】本発明の管路を延長している状態を示すもの
で、(イ)は蓋体を切断している状態を示す説明図、
(ロ)は管路を延長している状態を示す説明図である。FIG. 3 is a view showing a state in which the pipeline of the present invention is extended, and (a) is an explanatory view showing a state in which the lid is cut;
(B) is an explanatory view showing a state in which the pipeline is extended.
1 熱可塑性樹脂製管(ポリエチレン製
管) 2 電気融着継手 21 受け口 22 内周面 3 電気発熱素子(ニクロム線) 4 蓋体 41 肉薄部 5 ストッパー1 Thermoplastic Resin Pipe (Polyethylene Pipe) 2 Electric Fusion Joint 21 Receiving Port 22 Inner Surface 3 Electric Heating Element (Nichrome Wire) 4 Lid 41 Thin Wall 5 Stopper
Claims (3)
両端部の受け口の内周面に電気発熱素子が埋設されてい
る電気融着継手において、一方の受け口の端部に蓋体が
設けられて受け口が塞がれていることを特徴とする電気
融着継手。1. An electric fusion joint in which receptacles are provided at both ends of a short pipe, and electric heating elements are embedded in the inner peripheral surfaces of the receptacles at both ends, and a lid is provided at one end of the receptacle. An electric fusion-bonding joint, characterized in that it is provided and the receiving port is closed.
両端部の受け口の間に管の肉厚とほぼ等しい高さに突出
しているストッパーが設けられていることを特徴とする
電気融着継手。2. The electric fusion joint according to claim 1,
An electric fusion joint, characterized in that stoppers projecting at a height approximately equal to the wall thickness of the pipe are provided between the receiving ports at both ends.
て、受け口と蓋体との間に肉薄にされている肉薄部が設
けられていることを特徴とする電気融着継手。3. The electric fusion joint according to claim 1 or 2, wherein a thinned portion is provided between the receiving port and the lid body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6131704A JPH084974A (en) | 1994-06-14 | 1994-06-14 | Electrically fusible joint |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6131704A JPH084974A (en) | 1994-06-14 | 1994-06-14 | Electrically fusible joint |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH084974A true JPH084974A (en) | 1996-01-12 |
Family
ID=15064257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6131704A Pending JPH084974A (en) | 1994-06-14 | 1994-06-14 | Electrically fusible joint |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH084974A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007192321A (en) * | 2006-01-19 | 2007-08-02 | Mitsui Chemicals Inc | Blocking joint |
-
1994
- 1994-06-14 JP JP6131704A patent/JPH084974A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007192321A (en) * | 2006-01-19 | 2007-08-02 | Mitsui Chemicals Inc | Blocking joint |
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