JP2007040329A - Pipe connector - Google Patents

Pipe connector Download PDF

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Publication number
JP2007040329A
JP2007040329A JP2005222348A JP2005222348A JP2007040329A JP 2007040329 A JP2007040329 A JP 2007040329A JP 2005222348 A JP2005222348 A JP 2005222348A JP 2005222348 A JP2005222348 A JP 2005222348A JP 2007040329 A JP2007040329 A JP 2007040329A
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JP
Japan
Prior art keywords
main body
pipe
tube
pair
tubes
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
JP2005222348A
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Japanese (ja)
Inventor
Seijiro Ohashi
清次郎 大橋
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.)
KYOWA NISSEI KK
Original Assignee
KYOWA NISSEI KK
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 KYOWA NISSEI KK filed Critical KYOWA NISSEI KK
Priority to JP2005222348A priority Critical patent/JP2007040329A/en
Publication of JP2007040329A publication Critical patent/JP2007040329A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—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"
    • B29C65/3468—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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—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
    • B29C66/116—Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
    • B29C66/1162—Single bevel to bevel joints, e.g. mitre joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5224—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
    • B29C66/52241—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces with two right angles, e.g. for making T-shaped pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52292—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being internal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52294—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being heated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52297—Joining tubular articles involving the use of a socket said socket comprising slip-off prevention means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52298—Joining tubular articles involving the use of a socket said socket being composed by several elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B29C66/01—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
    • 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
    • B29C66/114—Single butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe connector for connecting pipes made of thermoplastic resin, having a simple structure, and capable of being easily and inexpensively manufactured. <P>SOLUTION: This pipe connector is composed of a thermoplastic resin material, a heating wire 4 is buried in a thin main body 3, and electric current is distributed to the heating wire 4, thus both faces of the main body 3 are melted. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ポリエチレン（以下ＰＥと省略する。）管等の熱可塑性樹脂の管どうしを接続する管接続体に関する。   The present invention relates to a pipe connection body for connecting pipes of thermoplastic resin such as polyethylene (hereinafter abbreviated as PE) pipes.

都市ガスの埋設管等に広く普及しているＰＥのガス管は、丈夫で 軽量且つ、取り扱い易く、耐腐食性があり、曲げても自立的に原形復帰し、その曲げの痕跡を残さない特性を有する。そのため地震や軟弱地盤に強く理想的なガス管となりうる。
しかしながら、その管どうしを接続するには、同一材料どうしで融着させる他なく、接着剤の使用ができない。そのＰＥ管は熱可塑性樹脂であり、その管の接続は特殊継ぎ手により行うのが一般的である。 PE gas pipes that are widely used for city gas buried pipes, etc. are durable, lightweight, easy to handle, corrosion resistant, and return to their original shape even when bent, leaving no trace of bending. Have Therefore, it can be an ideal gas pipe that is strong against earthquakes and soft ground.
However, in order to connect the pipes, an adhesive cannot be used except for fusing the same materials. The PE pipe is a thermoplastic resin, and the pipe is generally connected by a special joint.

この特殊継ぎ手は、一対の管を挿入する挿入部を有し、その内面に近接して予めコイルヒータが埋設されている。そして、両管をその継ぎ手内に挿入した状態で、コイルヒータに電気を供給し、その継ぎ手内面および接続しようとする管どうしの外周面の一部を溶融させ（エレクトロフィージョン融着）、それを冷却固化することにより、一体的に両管を接続していた。
また、一対の管どうしの突合せ接続の場合には、円盤状の金属加熱体を用い、その両面に一対の管端を押し当てて、加熱溶融させ、次いで金属加熱体を取り除くとともに、両管どうしを圧着して接続（バット融着）していた。 This special joint has an insertion portion for inserting a pair of tubes, and a coil heater is embedded in advance in the vicinity of the inner surface thereof. Then, with both pipes inserted into the joint, electricity is supplied to the coil heater, and the joint inner surface and a part of the outer peripheral surface of the pipes to be connected are melted (electrofusion fusion). Both pipes were integrally connected by cooling and solidifying.
In addition, in the case of a butt connection between a pair of tubes, a disc-shaped metal heating element is used, the ends of the pair of pipes are pressed against both sides to heat and melt, and then the metal heating element is removed and the two tubes are connected to each other. Were connected by crimping (butt fusion).

実開２０００−３２９２８４号公報Japanese Utility Model Publication No. 2000-329284 特開平０６−０９９４９６号公報Japanese Patent Laid-Open No. 06-099496

前者の特殊な樹脂継ぎ手を用いる接続方法は、継ぎ手の内表面に近接し、コイル状の電熱線を埋設するため、その製造が面倒で継ぎ手の製造コストが極めて高くなる。
次に、後者の接続方法は、樹脂の端部どうしを円盤状の加熱体に圧着して溶融させ、次いでそれを引き抜いた後に管どうしを圧着するものであるから、加熱体を引き抜く間およびパイプどうしを突合せ接触する間に、樹脂の冷却硬化が起こり好ましくない。
そこで本発明は係る問題点を解決することを課題とする。 The former connection method using a special resin joint is close to the inner surface of the joint and embeds a coiled heating wire, which is cumbersome to manufacture and extremely expensive to manufacture the joint.
Next, in the latter connection method, the end portions of the resin are pressed and melted to the disc-shaped heating body, and then the pipes are pressure-bonded after being pulled out. It is not preferable that the resin is cooled and cured during the butt contact.
Therefore, an object of the present invention is to solve such problems.

請求項１に記載の本発明は、一対の熱可塑性樹脂の管(1) (2) を夫々一部加熱溶融して互いに接続する管接続体において、
熱可塑性樹脂材よりなる薄肉の本体(3) と、その本体(3) に埋設され、その本体(3) の一方の面(3a)および他方の面(3b)の両面および前記一対の管(1) (2) の一部を加熱溶融する電熱線(4) とを具備し、
本体(3) は、前記両面(3a)(3b)が、前記一対の管(1) (2) の端部間に共に接して介装される形状を有すると共に、両管(1) (2) の厚みより薄肉に形成されたことを特徴とする管接続体である。 The present invention according to claim 1 is a pipe connection body in which a pair of thermoplastic resin pipes (1) and (2) are partially heated and melted and connected to each other.
A thin-walled main body (3) made of a thermoplastic resin material, embedded in the main body (3), both surfaces of one surface (3a) and the other surface (3b) of the main body (3) and the pair of tubes ( 1) A heating wire (4) for heating and melting a part of (2),
The main body (3) has a shape in which the both surfaces (3a) and (3b) are interposed between the ends of the pair of tubes (1) and (2), and both the tubes (1) and (2) The pipe connector is characterized in that it is formed thinner than the thickness.

請求項２に記載の本発明は、請求項１において、
前記本体(3) が薄肉の筒状に形成され、一方の前記管(1) の端部外周に整合する内周を有すると共に、外周が他方の前記管(2) の内周に整合する管接続体である。 The present invention according to claim 2 is the method according to claim 1,
The main body (3) is formed in a thin cylindrical shape, has an inner periphery that matches the outer periphery of the end of one of the tubes (1), and a tube whose outer periphery matches the inner periphery of the other tube (2) It is a connected body.

請求項３に記載の本発明は、請求項２において、
筒状に形成された前記本体(3) の開口端に外フランジ部(5) および／または内フランジ部(6) が形成された管接続体である。 The present invention described in claim 3 provides the method according to claim 2,
It is a pipe connection body in which an outer flange portion (5) and / or an inner flange portion (6) are formed at the open end of the body (3) formed in a cylindrical shape.

請求項４に記載の本発明は、請求項１において、
前記本体(3) が薄肉のリング状に形成され、その両面が突き合わされる被接続用の一対の管(1) (2) の両端面に整合される管接続体である。 The present invention according to claim 4 provides the method according to claim 1,
The main body (3) is a pipe connection body formed in a thin ring shape and aligned with both end faces of a pair of pipes (1) and (2) for connection to which both faces are abutted.

請求項５に記載の本発明は、請求項２〜請求項４のいずれかにおいて、
その本体(3) の肉厚は、その両面および前記一対の管(1) (2) の一部がそれに埋設された一列のコイル状電熱線(4) により溶融する程度の厚みとされた管接続体である。 The present invention according to claim 5 provides the method according to any one of claims 2 to 4,
The thickness of the main body (3) is such that the both sides and part of the pair of tubes (1) (2) are melted by a row of coiled heating wires (4) embedded therein. It is a connected body.

請求項６に記載の本発明は、請求項１〜請求項５のいずれかにおいて、
本体(3) が半径方向および／または軸線方向に弾性変形可能に形成された管接続体である。 A sixth aspect of the present invention provides the method according to any one of the first to fifth aspects,
The main body (3) is a pipe connector formed so as to be elastically deformable in the radial direction and / or the axial direction.

請求項７に記載の本発明は、請求項１において、
前記本体(3) が帯状または線状に形成され、被接続用の一方の管(1) の外周に螺旋状に被着される管接続体である。 The present invention described in claim 7 provides the method according to claim 1,
The main body (3) is a pipe connection body formed in a strip shape or a line shape and spirally attached to the outer periphery of one of the pipes (1) for connection.

請求項８に記載の本発明は、請求項１〜請求項７のいずれかにおいて、
前記電熱線(4) は、前記本体(3) に並列して二条に埋設され、その二条の電熱線(4) の端どうしが本体(3) の一端で互いに連結され、本体(3) の他端に一対の電熱線(4) が導かれた管接続体である。 The present invention according to claim 8 provides the method according to any one of claims 1 to 7,
The heating wire (4) is embedded in two strips in parallel with the main body (3), and the ends of the two heating wires (4) are connected to each other at one end of the main body (3). This is a pipe connector in which a pair of heating wires (4) is led to the other end.

請求項９に記載の本発明は、請求項１〜請求項８のいずれかにおいて、
被接続用の管(1) (2) および本体(3) がポリエチレン材料よりなる管接続体である。 The present invention according to claim 9 provides the method according to any one of claims 1 to 8,
The pipes to be connected (1) (2) and the main body (3) are pipe connections made of polyethylene material.

本発明の管接続体は、内部に電熱線４が埋設された薄肉の熱可塑性材料よりなり、それが被接続用の管１，２の端部に被着される形状を有する。そして電熱線４に電気を供給して、本体３自体およびそれに接触する管を一部溶融し、短時間で管の接続を行いうる。しかも、本体３は薄肉に形成され、構造が簡単で安価にそれを提供できる。そして、搬送および保管が容易である。   The pipe connection body of the present invention is made of a thin thermoplastic material in which the heating wire 4 is embedded, and has a shape that is attached to the ends of the pipes 1 and 2 to be connected. Then, electricity can be supplied to the heating wire 4 to melt part of the main body 3 itself and the tube in contact therewith, and the tubes can be connected in a short time. Moreover, the main body 3 is formed to be thin and has a simple structure and can be provided at low cost. And it is easy to carry and store.

上記構成において、本体３を薄肉の筒状に形成し、その内周を管１の外周に整合させるとともに、その外周を管２の内周に整合させた場合には、管１と管２とを筒状の本体３を介して、比較的広い面積で管１,２を加熱溶融させ、両者を一体に接続することができる。   In the above configuration, when the main body 3 is formed in a thin cylindrical shape, the inner periphery thereof is aligned with the outer periphery of the tube 1, and the outer periphery thereof is aligned with the inner periphery of the tube 2, the tube 1 and the tube 2 Through the cylindrical main body 3, the tubes 1 and 2 can be heated and melted over a relatively large area, and the two can be connected together.

上記構成において、本体３の開口端に外フランジ部５および/または内フランジ部６を形成したものにおいては、本体３と管１と管２との間の位置決めを行い、その位置決め状態で正確な接合を行うことができる。   In the above configuration, in the case where the outer flange portion 5 and / or the inner flange portion 6 is formed at the opening end of the main body 3, positioning between the main body 3, the pipe 1 and the pipe 2 is performed, and the positioning state is accurate. Bonding can be performed.

上記構成において、本体３を薄肉のリング状にし、その両面に一対の管１、管２の端面をつき合わせるようにしたものにおいては、極めて簡単な管接続体により、一対の管どうしを突合せ接合を容易に行い得る。   In the above configuration, when the main body 3 is formed into a thin ring shape and the end faces of the pair of tubes 1 and 2 are brought together on both surfaces thereof, the pair of tubes are butt-joined by a very simple tube connecting body. Can be easily performed.

上記構成において、一列に巻いた電熱線４によりその両面および管１，２の接触表面が十分溶融する程度のものとした場合には、一対の管１、管２どうしを迅速に溶融接合させることができる。   In the above configuration, when the heating wires 4 wound in a row are such that both surfaces and the contact surfaces of the tubes 1 and 2 are sufficiently melted, the pair of tubes 1 and 2 are rapidly melt-bonded. Can do.

上記構成において、本体３が半径方向および/または軸線方向に弾性変形自在に構成したものにおいては、本体３と各管１、管２との整合性を確保し、管の接続の信頼性を向上できる。   In the above configuration, in the case where the main body 3 is configured to be elastically deformable in the radial direction and / or the axial direction, the consistency between the main body 3 and each of the tubes 1 and 2 is ensured, and the reliability of the connection of the tubes is improved. it can.

上記構成において、本体３を帯状または線状にし、管１の外周にそれを螺旋状に被着したものにおいては、管１の直径が各種異なっても、同一の本体３で、管１、管２を溶融固定することができる。   In the above configuration, in the case where the main body 3 is formed in a band shape or a linear shape and is spirally attached to the outer periphery of the tube 1, the tube 1, the tube is the same main body 3, even if the diameter of the tube 1 is different. 2 can be melt-fixed.

上記構成において、電熱線４を本体３に並列して二条に埋設し、その二条の電熱線４の端どうしを連結したものにおいては、本体３の一方側に一対の給電用のリード線18を導くことができる。それにより作業性のよい管接続体を提供できる。   In the above configuration, the heating wire 4 is embedded in two strips in parallel with the main body 3 and the ends of the two heating wires 4 are connected to each other, and a pair of power supply lead wires 18 are provided on one side of the main body 3. Can lead. Thereby, a pipe connection body with good workability can be provided.

上記いずれかの構成において、管１、管２並びに本体３をポリエチレン材料で構成したものにおいては、ガス管等の耐震性を有する埋設管の接続を確実に行うことができる。   In any one of the above configurations, in the case where the tube 1, the tube 2 and the main body 3 are made of polyethylene material, it is possible to reliably connect a buried tube having earthquake resistance such as a gas tube.

次に、図面に基づいて本発明の実施の形態につき説明する。
図１は本発明の管接続体21を用いて管１と管２との間および管1aと管２との間を接続する説明図であり、(Ａ)はその管接続体21と管１、管1aとの分離状態を示し、 (Ｂ)はその管１に本管接続体21を被嵌した状態を示し、(Ｃ)は三つの管どうしの接続準備を完了した状態を示し、(Ｄ)は(Ｃ)のＤ部拡大図である。また、図２は本体３に埋設される電熱線４の展開状態の一例を示す説明図である。 Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory view for connecting the pipe 1 and the pipe 2 and between the pipe 1a and the pipe 2 using the pipe connecting body 21 of the present invention. FIG. (B) shows a state in which the main pipe connection body 21 is fitted to the pipe 1, (C) shows a state in which preparation for connecting the three pipes is completed, D) is an enlarged view of a D portion of (C). FIG. 2 is an explanatory view showing an example of a developed state of the heating wire 4 embedded in the main body 3.

この管接続体21は、管１,管２,管1aと同一材料からなる。従って、それらがＰＥ管の場合には、管接続体21自体もＰＥ材料で形成されている。この例では薄肉の本体３が筒状に形成され、その内部に図１(Ｄ)、図２に示す如く電熱線４が一列にコイル状に埋設されている。更にこの例では、電熱線４が本体３に並列して二条（正確には半径方向に一列、周方向に二条）に埋設され、その二条の電熱線４の端どうしが本体３の一端で互いに連結されて、そこにＵ字連結部4aを形成する。そして、その他端は本体３から外部へ導かれリード線18と接続される。この電熱線４はニクロム線等から構成することができる。また、リード線18はその端部に接続された銅線とすることができる。   The pipe connector 21 is made of the same material as the pipe 1, the pipe 2, and the pipe 1a. Therefore, when they are PE pipes, the pipe connector 21 itself is also formed of PE material. In this example, a thin main body 3 is formed in a cylindrical shape, and heating wires 4 are embedded in a coil in a row as shown in FIG. 1 (D) and FIG. Furthermore, in this example, the heating wires 4 are embedded in two strips (exactly one row in the radial direction and two strips in the circumferential direction) in parallel with the main body 3, and the ends of the two heating wires 4 are mutually connected at one end of the main body 3. Connected to form a U-shaped connecting portion 4a. The other end is led out from the main body 3 and connected to the lead wire 18. The heating wire 4 can be composed of a nichrome wire or the like. Further, the lead wire 18 can be a copper wire connected to the end thereof.

本体３の厚みは、一列にコイル状に埋設された電熱線４に電流を流通させたとき、本体３両面が溶融するとともに、それに接触する管１、管２の外周および内周の表面が溶融するように設計される。電熱線４の直径は0.2〜2.0ｍｍ程度であり、その太さは接続する管の外直径や肉厚、その他により適宜設計される。本体３の肉厚は電熱線４の直径の1.5〜4.0倍程度とすることができ、その埋設位置は厚み方向中央が好ましい。図１はソケットとして用いる管２および一対の管接続体21を介し、一対の管１、管1aを互いに接続するものである。そのためにはそれぞれの管接続体21の内直径が管１、管1aの外直径に整合し、外直径が管２の内直径に整合する。   The thickness of the main body 3 is such that when current is passed through the heating wire 4 embedded in a coil in a row, both surfaces of the main body 3 are melted, and the outer periphery and inner peripheral surfaces of the tube 1 and the tube 2 that are in contact with it are melted. Designed to do. The diameter of the heating wire 4 is about 0.2 to 2.0 mm, and the thickness is appropriately designed depending on the outer diameter and thickness of the pipe to be connected. The thickness of the main body 3 can be about 1.5 to 4.0 times the diameter of the heating wire 4, and the embedding position is preferably the center in the thickness direction. In FIG. 1, a pair of pipes 1 and 1a are connected to each other via a pipe 2 used as a socket and a pair of pipe connecting bodies 21. For this purpose, the inner diameter of each pipe connector 21 matches the outer diameter of the pipe 1 and the pipe 1a, and the outer diameter matches the inner diameter of the pipe 2.

そこで、管接続体21の内周である面3a内に管１の端部を図１(Ｂ)の如く嵌着する。その状態で管１を管２内に嵌着する。すると、管１の先端が管２のストッパ7aに当接する。同様に管1aを管２に嵌着する。このときリード線18は管接続体21の一端から外部に導かれる。そこで、リード線18を介し電熱線４に電流を流通させ、管接続体21の内周および外周面を溶融させるとともに、それに接触する管１外表面および管２内表面を溶融させ、ついで電流を停止させ、各溶融部を冷却硬化し、本体３を介し管１と管２、管1aと管２との間を接続する。ついで、リード線18を管接続体21の側端で切断し、管接続作業を終了する。   Therefore, the end of the tube 1 is fitted into the surface 3a which is the inner periphery of the tube connector 21 as shown in FIG. In this state, the tube 1 is fitted into the tube 2. Then, the tip of the tube 1 comes into contact with the stopper 7a of the tube 2. Similarly, the tube 1a is fitted to the tube 2. At this time, the lead wire 18 is led to the outside from one end of the pipe connector 21. Therefore, an electric current is passed through the heating wire 4 through the lead wire 18 to melt the inner and outer peripheral surfaces of the tube connecting body 21, and the outer surface of the tube 1 and the inner surface of the tube 2 that are in contact with them are melted. Each melted part is cooled and hardened, and the pipes 1 and 2 and the pipes 1a and 2 are connected via the main body 3. Next, the lead wire 18 is cut at the side end of the pipe connection body 21 to complete the pipe connection work.

なお、図１および図２に示すような管接続体21を製造するには、電熱線４をインサートした樹脂の各種成形技術によって作ることができる。例えば、樹脂の雄型外周に電熱線４をコイル状に螺嵌し、その雄型と雌型との間に熱可塑性樹脂材を充填し、型開きすることにより、そのコイル電熱線の内面側と外面側とに同じ肉圧の樹脂が被嵌された管接続体21を製造することができる。更には平面内で蛇行状に電熱線４を敷設し、それを厚み方向の中央に位置するように埋設した樹脂板を形成し、ついでそれを筒状に丸めて図１に示す管接続体21を形成してもよい。いずれにしても、本体３の肉厚は比較的薄くすればよく、その電熱線を厚み方向中央にすればよいので、容易にそれを製造することができる。   In addition, in order to manufacture the pipe connection body 21 as shown in FIG. 1 and FIG. 2, it can make with the various shaping | molding techniques of the resin which inserted the heating wire 4. FIG. For example, the heating wire 4 is screwed in a coil shape around the outer periphery of the male mold of the resin, a thermoplastic resin material is filled between the male mold and the female mold, and the mold is opened. The pipe connector 21 in which the resin with the same wall pressure is fitted on the outer surface side can be manufactured. Further, the heating wire 4 is laid in a meandering manner in a plane, a resin plate is formed so as to be located at the center in the thickness direction, and then rounded into a cylindrical shape to connect the pipe connector 21 shown in FIG. May be formed. In any case, the thickness of the main body 3 may be relatively thin, and the heating wire may be centered in the thickness direction, so that it can be easily manufactured.

次に、図３は本発明の管接続体21の第２の実施の形態を示し、これが前記図１のそれと異なる点は管接続体21の一端部に内フランジ部６が他端部に外フランジ部５がそれぞれ一体に成形されている点である。内フランジ部６は管１の先端を突き当てて位置決めし、外フランジ部５は管２の後端に突き当てて位置決めし得る。それにより本体３と管２、管１との位置決めが可能であり、この場合には図３におけるストッパ7aを不要とすることもできる。なお、外フランジ部５と内フランジ部６のうち一方を省略することもできる。   Next, FIG. 3 shows a second embodiment of the pipe connection body 21 of the present invention, which differs from that of FIG. 1 in that one end of the pipe connection body 21 has an inner flange 6 on the other end. The flange portion 5 is integrally formed with each other. The inner flange portion 6 can be positioned by abutting the tip of the tube 1, and the outer flange portion 5 can be positioned by abutting the rear end of the tube 2. As a result, the main body 3, the pipe 2 and the pipe 1 can be positioned. In this case, the stopper 7a in FIG. 3 can be dispensed with. One of the outer flange portion 5 and the inner flange portion 6 can be omitted.

次に、図４は本発明の管接続体21の他の例である。この例では本体３が細い帯状または線状に形成され、それが被接続用の管１外周に螺旋状に被着されるものである。この例では、本体３は断面が略三角形に形成され内部に電熱線４がＵ字状に配設されている。そして、本体３の断面Ｖ字状（断面Ｕ字状を含む）の外周に整合する溝が管１外周面に形成され、そこに本体３が巻回される。なお、巻回が開始される先端部は適宜なテープで止めることができる。そして、図４(Ｄ)の如く管接続体21が巻回された管１を管２内に嵌着し、電熱線４に電流を供給することにより、本体３および管２内周および管１の螺旋溝部を溶融させ、管１と管２との間をこの例の管接続体21を介して接続する。   Next, FIG. 4 shows another example of the pipe connector 21 of the present invention. In this example, the main body 3 is formed in a thin band shape or a linear shape, and it is helically attached to the outer periphery of the tube 1 to be connected. In this example, the main body 3 has a substantially triangular cross section, and the heating wire 4 is arranged in a U shape inside. And the groove | channel which aligns with the outer periphery of the cross-section V-shape (a cross-section U-shape is included) of the main body 3 is formed in the outer peripheral surface of the pipe | tube 1, and the main body 3 is wound there. In addition, the front-end | tip part from which winding is started can be stopped with a suitable tape. Then, the pipe 1 around which the pipe connection body 21 is wound as shown in FIG. 4D is fitted into the pipe 2, and the current is supplied to the heating wire 4, whereby the main body 3 and the inner circumference of the pipe 2 and the pipe 1 are supplied. The pipe 1 and the pipe 2 are connected via the pipe connector 21 of this example.

次に、図５は本発明の管接続体21の更に他の例であり、この例が図４のそれと異なる点は本体３の断面外周のみである。この例では本体３の横断面は、台形状に形成され、それに整合するように管１の螺旋溝が形成されている。
次に、図６は本発明の更に他の実施の形態を示し、この形態は一対の半割の本体３によって管接続体21を構成するものである。これは特に大口径の管どうしを接続するとき、その作業性を良くするためのものである。現場において管接続体21を嵌着するスペースが狭小のとき等に有効である。 Next, FIG. 5 shows still another example of the pipe connection body 21 of the present invention, and this example is different from that of FIG. In this example, the cross section of the main body 3 is formed in a trapezoidal shape, and the spiral groove of the tube 1 is formed so as to be aligned therewith.
Next, FIG. 6 shows still another embodiment of the present invention. In this embodiment, a pipe connector 21 is constituted by a pair of halved main bodies 3. This is to improve the workability especially when connecting large diameter pipes. This is effective when the space for fitting the pipe connector 21 is small in the field.

次に図７は本発明の更に他の実施の形態を示し、この例が図１のそれと異なる点は本体３の両端外周に一対の爪部８が突設されるとともに、本体３内周の中央にストッパ９が設けられたものである。この例では管接続体21を管２に嵌着し、その管接続体21内周に管１を図７(Ｄ)の如く嵌着するものである。即ち、図７(Ａ)に示す管接続体21を同(Ｃ)の如く管２内に圧入する。このとき管接続体21は変形し、軸方向に移動され、(Ｄ)の如く管２内周に抜け止め固定される。そこで、その管接続体21内に管１端部を嵌着すればよい。   Next, FIG. 7 shows still another embodiment of the present invention. This example is different from that of FIG. 1 in that a pair of claw portions 8 project from the outer periphery of both ends of the main body 3 and A stopper 9 is provided at the center. In this example, the pipe connection body 21 is fitted to the pipe 2, and the pipe 1 is fitted to the inner periphery of the pipe connection body 21 as shown in FIG. That is, the pipe connector 21 shown in FIG. 7A is press-fitted into the pipe 2 as shown in FIG. At this time, the pipe connection body 21 is deformed, moved in the axial direction, and fixed to the inner periphery of the pipe 2 as shown in (D). Therefore, the pipe 1 end may be fitted into the pipe connector 21.

次に図８は本発明の更に他の例であり、この例は本体３の横断面がＴ字状に形成され、その短筒部が管１、管２外周を被嵌するものである。このように構成することにより、管接続体21と管１と管２との位置決めを容易にすることができる。薄肉のリング状部には、電熱線４が渦巻状に埋設されている。この例でも二条の電熱線４の先端が接続され、そこにＵ字連結部4aを形成している。なお、この薄肉リング状部の厚みは、一列の電熱線４に電流を流通させた場合に、その両面側が溶融するとともに、一対の管１、管２の端面を溶融できる程度のものとする。   Next, FIG. 8 shows still another example of the present invention. In this example, the cross section of the main body 3 is formed in a T-shape, and the short cylinder part fits the outer periphery of the tube 1 and the tube 2. By comprising in this way, positioning with the pipe connection body 21, the pipe | tube 1, and the pipe | tube 2 can be made easy. A heating wire 4 is spirally embedded in the thin ring-shaped portion. Also in this example, the tips of the two heating wires 4 are connected, and a U-shaped connecting portion 4a is formed there. The thickness of the thin ring-shaped portion is such that when current is passed through one row of heating wires 4, both sides thereof are melted and the end surfaces of the pair of tubes 1 and 2 can be melted.

このような管接続体21は図８(Ｃ)に示す圧接装置10を用いて、一対の管１、管２どうしを圧着状態で接続することができる。この例では、基部13上に一対の把持部12が立設され、一方の把持部12は基部13のガイド溝17に案内されて移動する。そして、その移動側がシリンダ11のピストンロッドに接続されている。一対の把持部12が管１、管２の外周を着脱自在に把持し、その状態で左側の把持部12を右側に移動して一対の管１、管２間を圧着する。ついでリード線18に電流を供給し、管接続体21および管１、管２端面を溶融させ、ついで電流を遮断し冷却硬化させることにより、一対の管１、管２間を管接続体21を介して接続するものである。   Such a pipe connection body 21 can connect a pair of pipes 1 and 2 in a crimped state using a pressure welding apparatus 10 shown in FIG. In this example, a pair of gripping portions 12 are erected on the base portion 13, and one gripping portion 12 moves while being guided by the guide groove 17 of the base portion 13. The moving side is connected to the piston rod of the cylinder 11. The pair of gripping portions 12 detachably grip the outer circumferences of the tubes 1 and 2, and in this state, the left gripping portion 12 is moved to the right side to crimp the pair of tubes 1 and 2. Next, an electric current is supplied to the lead wire 18 to melt the end faces of the pipe connecting body 21 and the pipe 1 and the pipe 2, and then the electric current is cut off to cool and harden the pipe connecting body 21 between the pair of pipes 1 and 2. Is connected through the network.

次に、図９は本発明の更に他の例であり、この例はリング状の管接続体21によって、一対の管１,管２間をＴ字状に溶融接続させるものである。そのためにこの例では(Ａ)の如く管１の先端と管２の開口との間に管接続体21を介挿する。そして、(Ｂ)の如く圧接装置10の一対のシリンダ11によって管１、管２間を圧着する。その状態でリード線18を介し、電熱線４内に電流を供給し両者間を溶融接続するものである。   Next, FIG. 9 shows still another example of the present invention. In this example, a pair of pipes 1 and 2 are fused and connected in a T shape by a ring-shaped pipe connection body 21. Therefore, in this example, a pipe connector 21 is inserted between the tip of the pipe 1 and the opening of the pipe 2 as shown in FIG. Then, the pipe 1 and the pipe 2 are pressure-bonded by a pair of cylinders 11 of the pressure welding apparatus 10 as shown in FIG. In this state, a current is supplied into the heating wire 4 via the lead wire 18, and the two are melt-connected.

次に、図10は本発明の管接続体21の更に他の例であり、この例は管接続体21の本体３の両面がテーパ状に形成されたものである。即ち、皿状ワッシャの如く形成されている。そして、その外周側の面3bには管２の開先部15が接触し、内周側の面3aには管１のテーパ部16が接触する。そして接触状態でリード線18を介し、電熱線４に電流を供給し、管１、管２間を溶融接続するものである。   Next, FIG. 10 shows still another example of the pipe connection body 21 of the present invention. In this example, both surfaces of the main body 3 of the pipe connection body 21 are tapered. That is, it is formed like a dish-shaped washer. The groove portion 15 of the tube 2 contacts the outer peripheral surface 3b, and the tapered portion 16 of the tube 1 contacts the inner peripheral surface 3a. Then, current is supplied to the heating wire 4 via the lead wire 18 in the contact state, and the tube 1 and the tube 2 are fused and connected.

次に、図11は、管１、管２がＴ字状に接続されるものであり、この場合にも皿ワッシャ状の本体３を有する管接続体21によって両管１、管２間を溶融接続するものである。なお、本発明はガス管に限らず、水道管、下水管、その他の熱可塑性樹脂の管に適用できる。   Next, FIG. 11 shows that the tube 1 and the tube 2 are connected in a T shape, and in this case also, the tube 1 and the tube 2 are melted by the tube connecting body 21 having the main body 3 in the shape of a washer. To connect. The present invention is not limited to gas pipes, but can be applied to water pipes, sewage pipes, and other thermoplastic resin pipes.

本発明の第１の実施の形態を示す管接続体21の説明図であり、(Ａ)はその接続方法を示す分解斜視図、(Ｂ)は管接続体21を管１端部に被嵌した状態を示し、(Ｃ)は接続のためのセット状態を示す。また、(Ｄ)は(Ｃ)のＤ部拡大図である。BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of the pipe connection body 21 which shows the 1st Embodiment of this invention, (A) is an exploded perspective view which shows the connection method, (B) is fitting the pipe connection body 21 to the pipe 1 end part. (C) shows a set state for connection. Further, (D) is an enlarged view of a D part of (C). 管接続体21の本体３に埋設された電熱線４の埋設状態の一例を示す説明図。Explanatory drawing which shows an example of the embedment state of the heating wire 4 embed | buried in the main body 3 of the pipe connection body 21. FIG. 本発明の管接続体21の第２の実施の携帯を示す縦断面図(Ａ)。図(Ｂ)同管接続体21の使用状態を示す要部縦断面拡大図。The longitudinal cross-sectional view (A) which shows carrying of 2nd implementation of the pipe connection body 21 of this invention. FIG. 2B is an enlarged view of a main part longitudinal section showing a use state of the pipe connector 21. 本発明の第３の実施の形態を示し、(Ａ)はその管接続体21の斜視図、 (Ｂ)はその先端部における縦断面図、(Ｃ)は同管接続体21の使用状態を示す説明図、(Ｄ)は同使用状態を示す縦断面拡大図。The third embodiment of the present invention is shown, (A) is a perspective view of the pipe connection body 21, (B) is a longitudinal sectional view at the tip, and (C) is a use state of the pipe connection body 21. Explanatory drawing which shows, (D) is a longitudinal cross-sectional enlarged view which shows the use condition. 本発明の第４の実施の形態を示す管接続体21の斜視図および使用状態を示す縦断面拡大図。The perspective view of the pipe connector 21 which shows the 4th Embodiment of this invention, and the longitudinal cross-sectional enlarged view which shows a use condition.

本発明の第５の実施の形態を示す管接続体21の斜視図。The perspective view of the pipe connection body 21 which shows the 5th Embodiment of this invention. 本発明の第６の実施の形態を示す管接続体21であって(Ａ)はその縦断面図、(Ｂ)は(Ａ)のＢ‐Ｂ横断面図、(Ｃ)は管接続体21を管２に嵌入する途中段階を示す説明図、(Ｄ)は同嵌入状態を示す縦断面図。It is the pipe connection body 21 which shows the 6th Embodiment of this invention, Comprising: (A) is the longitudinal cross-sectional view, (B) is a BB cross-sectional view of (A), (C) is the pipe connection body 21 Explanatory drawing which shows the intermediate | middle step which inserts in the pipe | tube 2, (D) is a longitudinal cross-sectional view which shows the same insertion state. 本発明の第７の実施の形態を示し、(Ａ)はその縦断面図、(Ｂ)は(Ａ)のＢ‐Ｂ矢視図、(Ｃ)は同管接続体21により管１、管２間を圧接装置10を介して接続する説明図。7 shows a seventh embodiment of the present invention, where (A) is a longitudinal sectional view thereof, (B) is a view taken along the line BB of (A), and (C) is a tube 1, tube by means of the tube connector 21; 2 is an explanatory diagram for connecting the two via a pressure welding device 10. FIG. 本発明の第８の実施の形態を示す管接続体21であって、(Ａ)はその使用状態の分解説明図、(Ｂ)は同使用状態の縦断面図、(Ｃ)は同平面図。It is the pipe connection body 21 which shows the 8th Embodiment of this invention, Comprising: (A) is the exploded explanatory view of the use condition, (B) is the longitudinal cross-sectional view of the use condition, (C) is the top view . 本発明の第９の実施の形態を示す管接続体21の縦断面図。The longitudinal cross-sectional view of the pipe connection body 21 which shows the 9th Embodiment of this invention. 本発明の更に他の実施の形態を示す管接続体21の説明図。Explanatory drawing of the pipe connection body 21 which shows other embodiment of this invention.

符号の説明Explanation of symbols

１ 管
1a 管
２ 管
３ 本体
3a 面
3b 面 1 tube
1a tube 2 tube 3 body
3a side
3b side

４ 電熱線
4a Ｕ字連結部
５ 外フランジ部
６ 内フランジ部
7a ストッパ
８ 爪部
９ ストッパ 4 Heating wire
4a U-shaped connecting part 5 Outer flange part 6 Inner flange part
7a Stopper 8 Claw 9 Stopper

10 圧接装置
11 シリンダ
12 把持部
13 基部
14 支持部
15 開先部 10 Pressure welding equipment
11 cylinders
12 Grip part
13 Base
14 Support section
15 Groove

16 テーパ部
17 ガイド溝
18 リード線
19 ヒンジ
20 締結具
21 管接続体 16 Taper
17 Guide groove
18 Lead wire
19 Hinge
20 Fastener
21 Pipe connector

Claims (9)

一対の熱可塑性樹脂の管(1) (2) を夫々一部加熱溶融して互いに接続する管接続体において、
熱可塑性樹脂材よりなる薄肉の本体(3) と、その本体(3) に埋設され、その本体(3) の一方の面(3a)および他方の面(3b)の両面および前記一対の管(1) (2) の一部を加熱溶融する電熱線(4) とを具備し、
本体(3) は、前記両面(3a)(3b)が、前記一対の管(1) (2) の端部間に共に接して介装される形状を有すると共に、両管(1) (2) の厚みより薄肉に形成されたことを特徴とする管接続体。 In a pipe connection body in which a pair of thermoplastic resin pipes (1) and (2) are partially heated and melted and connected to each other,
A thin-walled main body (3) made of a thermoplastic resin material, embedded in the main body (3), both surfaces of one surface (3a) and the other surface (3b) of the main body (3) and the pair of tubes ( 1) A heating wire (4) for heating and melting a part of (2),
The main body (3) has a shape in which the both surfaces (3a) and (3b) are interposed between the ends of the pair of tubes (1) and (2), and both the tubes (1) and (2) A pipe connector characterized in that it is formed thinner than the thickness. 請求項１において、
前記本体(3) が薄肉の筒状に形成され、一方の前記管(1) の端部外周に整合する内周を有すると共に、外周が他方の前記管(2) の内周に整合する管接続体。 In claim 1,
The main body (3) is formed in a thin cylindrical shape, has an inner periphery that matches the outer periphery of the end of one of the tubes (1), and a tube whose outer periphery matches the inner periphery of the other tube (2) Connected body. 請求項２において、
筒状に形成された前記本体(3) の開口端に外フランジ部(5) および／または内フランジ部(6) が形成された管接続体。 In claim 2,
A pipe connection body in which an outer flange portion (5) and / or an inner flange portion (6) are formed at an opening end of the cylindrical body (3). 請求項１において、
前記本体(3) が薄肉のリング状に形成され、その両面が突き合わされる被接続用の一対の管(1) (2) の両端面に整合される管接続体。 In claim 1,
A pipe connection body in which the main body (3) is formed in a thin ring shape and aligned with both end faces of a pair of pipes (1) and (2) for connection to which both surfaces are abutted. 請求項２〜請求項４のいずれかにおいて、
その本体(3) の肉厚は、その両面および前記一対の管(1) (2) の一部がそれに埋設された一列のコイル状電熱線(4) により溶融する程度の厚みとされた管接続体。 In any one of Claims 2-4,
The thickness of the main body (3) is such that the both sides and part of the pair of tubes (1) (2) are melted by a row of coiled heating wires (4) embedded therein. Connected body. 請求項１〜請求項５のいずれかにおいて、
本体(3) が半径方向および／または軸線方向に弾性変形可能に形成された管接続体。 In any one of Claims 1-5,
A pipe connector in which the main body (3) is formed to be elastically deformable in the radial direction and / or the axial direction. 請求項１において、
前記本体(3) が帯状または線状に形成され、被接続用の一方の管(1) の外周に螺旋状に被着される管接続体。 In claim 1,
A pipe connection body in which the main body (3) is formed in a strip shape or a line shape and is spirally attached to the outer periphery of one of the pipes (1) for connection. 請求項１〜請求項７のいずれかにおいて、
前記電熱線(4) は、前記本体(3) に並列して二条に埋設され、その二条の電熱線(4) の端どうしが本体(3) の一端で互いに連結され、本体(3) の他端に一対の電熱線(4) が導かれた管接続体。 In any one of Claims 1-7,
The heating wire (4) is embedded in two strips in parallel with the main body (3), and the ends of the two heating wires (4) are connected to each other at one end of the main body (3). A pipe connector in which a pair of heating wires (4) is led to the other end. 請求項１〜請求項８のいずれかにおいて、
被接続用の管(1) (2) および本体(3) がポリエチレン材料よりなる管接続体。
In any one of Claims 1-8,
A pipe connection body in which the pipe (1) (2) and the main body (3) for connection are made of a polyethylene material.
JP2005222348A 2005-08-01 2005-08-01 Pipe connector Pending JP2007040329A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
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JP2011158007A (en) * 2010-01-29 2011-08-18 Inoac Housing & Construction Materials Co Ltd Thermal fusion tool for resin pipe
JP2011236933A (en) * 2010-05-06 2011-11-24 Tokyo Gas Co Ltd Electric fusion joint and method of manufacturing electric fusion joint
WO2017072886A1 (en) * 2015-10-28 2017-05-04 ミライアル株式会社 Resin piping member, resin pipe joint, and piping production method
CN107364051A (en) * 2017-09-14 2017-11-21 长春燃气热力设计研究院有限责任公司 A kind of polyethylene pipe welding firing equipment and its heating means
JP2019520248A (en) * 2016-05-13 2019-07-18 アーベーエネ パイプ システムス，エセ．エレ．ウー． Pipe element connection device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011158007A (en) * 2010-01-29 2011-08-18 Inoac Housing & Construction Materials Co Ltd Thermal fusion tool for resin pipe
JP2011236933A (en) * 2010-05-06 2011-11-24 Tokyo Gas Co Ltd Electric fusion joint and method of manufacturing electric fusion joint
WO2017072886A1 (en) * 2015-10-28 2017-05-04 ミライアル株式会社 Resin piping member, resin pipe joint, and piping production method
JP2019520248A (en) * 2016-05-13 2019-07-18 アーベーエネ パイプ システムス，エセ．エレ．ウー． Pipe element connection device
CN107364051A (en) * 2017-09-14 2017-11-21 长春燃气热力设计研究院有限责任公司 A kind of polyethylene pipe welding firing equipment and its heating means
CN107364051B (en) * 2017-09-14 2023-07-28 长春燃气热力设计研究院有限责任公司 Polyethylene pipeline welding heating equipment and heating method thereof

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