JPH06331088A - Electric fusion type header joint - Google Patents

Electric fusion type header joint

Info

Publication number
JPH06331088A
JPH06331088A JP5119549A JP11954993A JPH06331088A JP H06331088 A JPH06331088 A JP H06331088A JP 5119549 A JP5119549 A JP 5119549A JP 11954993 A JP11954993 A JP 11954993A JP H06331088 A JPH06331088 A JP H06331088A
Authority
JP
Japan
Prior art keywords
header
branch
branches
pipes
diameter
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
JP5119549A
Other languages
Japanese (ja)
Inventor
Hiroshi Oya
博 大矢
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.)
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP5119549A priority Critical patent/JPH06331088A/en
Publication of JPH06331088A publication Critical patent/JPH06331088A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5224—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
    • B29C66/70—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
    • 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
    • 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
    • B29C66/7394—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 thermoset
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/24—Pipe joints or couplings
    • B29L2031/246—T-joints

Abstract

PURPOSE:To enable selective connection of two kinds of pipes in a header joint which has a barrel provided with a main pipe connection part and a plurality of branches branched therefrom, by providing the branches each with a stepped shape composed of a small diameter portion on the barrel side, and embedding heat wires in the inner peripheral surfaces having different diameters. CONSTITUTION:A header 1 used for water supply or hot water supply piping has a hollow barrel 2 made of thermosetting resin with which a main pipe connection part 3 is integrated. A plurality of branches 4a to 4c are integrated with the barrel 2 for connecting branched pipes 50a, 50b, 40. In such a header 1, the branches 4a to 4c respectively have stepped structure composed of small- diameter connection parts 5a to 5c and large-diameter connection parts 6a to 6c. Electroconductive heat wires 7a to 7c and 8a to 8c are embedded in the connection parts 5a to 5c and 6a to 6c, independently. At least two pipes having different port diameters can be fused to one of the branches 4a to 4c, and management at site is speedily performed.

Description

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

【０００１】[0001]

【産業上の利用分野】本発明は主に給水・給湯配管にお
いて、ヘッダー配管工法に使用するヘッダー継手（以下
単にヘッダーという）に関し、特に能率的に配管作業が
行える電気融着式ヘッダーに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a header joint (hereinafter simply referred to as "header") used for a header piping method mainly in water supply and hot water supply piping, and more particularly to an electric fusion type header capable of efficient piping work. is there.

【０００２】[0002]

【従来の技術】従来、樹脂製（熱可塑性樹脂で例えばポ
リエチレンやポリブテンを指す。以下同様）ヘッダーと
しては図４に示すものがある。ヘッダー10は、胴体11
と、主管を接続するための主管接続部12と、複数の分岐
管を接続するための枝部13ａ，13ｂ，13ｃ…とからなっ
ている。ここでヘッダー10と分岐樹脂管40又は50ａ，50
ｂを接続しようとすると、従来からある電気融着継手20
又は30ａ，30ｂを用意して、これらを介して電気融着接
続を行う。即ち、枝部13ａについていえば、異なる径の
枝部と分岐管を接続するので、例えば呼び径13mmの枝部
13ａと呼び径10mmの分岐管50ａを径違いソケット30ａの
両受口にそれぞれ挿入し、両端コネクタピン32に図示せ
ぬコントローラから通電して電熱線31を発熱させ両者を
融着するというものである。尚、呼び径が同じときはソ
ケット20を用いて同様に融着接続できる。ところが、こ
のヘッダーでは融着接合面となる各枝部の外面が紫外線
による劣化や取扱い上の傷を受けやすく、いずれにして
も外面を薄く（0.2mm程度）削り落す必要がある。しか
し、ヘッダーの場合複数の枝部が並んでいるため表面を
削るのは困難な作業であるし、逆に切削作業を容易にす
るため枝間隔を大きくするとヘッダー全長が大きくなり
広い配管スペースが必要となるという不都合がある。2. Description of the Related Art Conventionally, a header made of resin (a thermoplastic resin such as polyethylene or polybutene; hereinafter the same) is shown in FIG. Header 10 is fuselage 11
And a main pipe connecting portion 12 for connecting the main pipe, and branch portions 13a, 13b, 13c ... For connecting a plurality of branch pipes. Here, the header 10 and the branched resin pipe 40 or 50a, 50
When attempting to connect b, the conventional electric fusion splicing joint 20
Alternatively, 30a and 30b are prepared, and electric fusion connection is performed through them. That is, regarding the branch portion 13a, since the branch portion and the branch pipe having different diameters are connected to each other, for example, the branch portion having a nominal diameter of 13 mm is used.
13a and a branch pipe 50a with a nominal diameter of 10 mm are inserted into both sockets of the different-diameter socket 30a, and a connector (not shown) is energized by a controller (not shown) to heat the heating wire 31 and fuse the two. is there. When the nominal diameters are the same, the fusion connection can be similarly performed using the socket 20. However, in this header, the outer surface of each branch, which is the fusion-bonded surface, is easily deteriorated by ultraviolet rays and scratched during handling, and in any case, the outer surface must be thinly cut (about 0.2 mm). However, in the case of a header, it is difficult to scrape the surface because multiple branch parts are lined up, and conversely, if the branch interval is increased to make the cutting work easier, the overall length of the header becomes large and a large piping space is required. There is an inconvenience that

【０００３】そこで、特開平２−253084号では、図５に
示すようにヘッダーＨの各枝部Ｂ，Ｃ，Ｄ，Ｅに一体的
に電気融着継手構造Ｆを備えることが開示されている。
このヘッダーによれば直接分岐管を枝部に電気融着でき
るし、枝部側の融着面を削るような作業は必要でなくな
る。Therefore, Japanese Patent Laid-Open No. 2-253084 discloses that the branch portions B, C, D and E of the header H are integrally provided with the electric fusion joint structure F as shown in FIG. .
According to this header, the branch pipe can be directly electrically fused to the branch portion, and the work of cutting the fused surface on the branch portion side is not necessary.

【０００４】[0004]

【発明が解決しようとする課題】しかしながら、呼び径
の異なる枝部と分岐管とを接続する場合、あるいは現場
で急にその必要が生じた場合、上記のヘッダーでは少な
くとも複数種類の呼び径にあった専用の枝部、即ち電気
融着接続部が備わっている必要がある。そうでなければ
前述の例のように径違いソケット等を用意し面倒な作業
が必要となる。また、ヘッダーの場合、後面や側面には
それぞれ壁や枝部が隣接しているのでコネクターピンは
前面に並列配置した方がコンパクトにもなるし、作業性
の面でも好ましい。上記特開平２−253084号にあるヘッ
ダーはこれらの点で考慮がなく、融通性や作業性が悪い
ものであった。本発明は、このような問題を解決するも
ので、呼び径の異なる分岐管を接続しようとする場合で
も融通性がよく簡単に融着ができ、なおかつ枝部の長さ
と間隔を比較的小とし全体的にコンパクトにした電気融
着式ヘッダーを提供することを目的とする。However, when connecting a branch portion and a branch pipe having different nominal diameters or when there is a sudden need for them in the field, the above header has at least a plurality of types of nominal diameters. It is necessary to have a dedicated branch, that is, an electric fusion splicing part. Otherwise, it is necessary to prepare a socket with a reduced diameter and the like as in the above-mentioned example, which is a troublesome work. Further, in the case of the header, since the wall and the branch are adjacent to the rear surface and the side surface, respectively, it is preferable to arrange the connector pins in parallel on the front surface in order to make it compact and in terms of workability. The header disclosed in JP-A-2-253084 does not take these points into consideration and has poor flexibility and workability. The present invention solves such a problem. Even when trying to connect branch pipes having different nominal diameters, the flexibility is good and the fusion can be easily performed, and the lengths and intervals of the branch portions are relatively small. It is an object of the present invention to provide an electro-fusion type header which is compact as a whole.

【０００５】[0005]

【課題を解決するための手段】本発明は、主管接続部を
有する胴体と、複数の分岐管を接続するための枝部とを
有する熱可塑性樹脂からなるヘッダーにおいて、前記そ
れぞれの枝部の内径を胴体側を小径とし、先端側に向け
て大径となる少なくとも２段の接続部とし、この接続部
の異径内周面にそれぞれ独立して電熱線を設けた電気融
着式ヘッダー継手である。The present invention is directed to a header made of a thermoplastic resin having a body having a main pipe connecting portion and a branch portion for connecting a plurality of branch pipes. Is a fusion-bonded header joint in which the body side has a small diameter and at least two stages of connecting portions with a large diameter toward the tip side are provided, and heating wires are independently provided on the inner peripheral surfaces of different diameters of this connecting portion. is there.

【０００６】上記の接続部としては、例えば小径側の接
続部は呼び径10mmの分岐管に対応する内径とし、その次
に呼び径13mmに対応する内径の２段として２種類の分岐
管に対応できるようにすると良い。無論呼び径13mm用の
次に20mm用等の接続部を形成し３段の接続部としてもよ
い。また各接続部の内周面に埋設する電熱線は２条巻き
として一対のコネクターピンが枝部の前面に隣同士に並
んで配置されるようにすることが望ましい。As the above-mentioned connecting portion, for example, the connecting portion on the small diameter side has an inner diameter corresponding to a branch pipe having a nominal diameter of 10 mm, and then has two stages of an inner diameter corresponding to a nominal diameter of 13 mm, corresponding to two kinds of branch pipes. It would be good to be able to. Of course, it is also possible to form a connection portion for the nominal diameter of 13 mm and then for the 20 mm diameter to form a three-stage connection portion. Further, it is desirable that the heating wire buried in the inner peripheral surface of each connection portion is wound in two strands so that the pair of connector pins are arranged next to each other on the front surface of the branch portion.

【０００７】[0007]

【作用】上記の通り各枝部には、少なくとも２段の異な
った電気融着接続部があるので１つの枝部に対して異な
る呼び径の分岐管、つまり２つの管に対応できる態勢と
なっており現場で臨機応変にどちらでも融着することが
できる。また、各接続部に埋設する電熱線はそれぞれ独
立して２条巻きとし、一対のコネクターピンを一カ所に
並列して設けたので、従来コネクターピン付近で電熱線
との接続に必要な長さが半分ですみ、枝部の長さを短く
できる。そしてこれらはヘッダーの前面に並列している
のでコントローラ側のコネクターも差し込み操作しやす
いなど全般的に作業性が良くなる。As described above, since each branch portion has at least two different stages of electric fusion splicing portions, it is possible to deal with branch pipes having different nominal diameters for one branch portion, that is, two pipes. Therefore, either one can be fused flexibly on site. In addition, the heating wire embedded in each connection part has two independent windings, and a pair of connector pins are provided in parallel at one place. Therefore, the length required to connect the heating wire near the conventional connector pin Can be cut in half and the branch length can be shortened. And since these are parallel to the front surface of the header, the connector on the controller side can be easily inserted and the workability is improved.

【０００８】[0008]

【実施例】以下、本発明の実施例を図面により説明す
る。図１〜図３は一実施例を示し、図１はヘッダーに分
岐管を接続した後の断面図。図２は電熱線の形態を示す
斜視図。図３は図１の正面図である。ヘッダー１は、中
空筒状の胴体２と、円筒状の主管接続部３及び複数の分
岐管を接続するための枝部４ａ，４ｂ，４ｃとがポリブ
テンにより一体形成されている。主管接続部３は胴部２
の一端側に開口し、枝部４ａ，４ｂ，４ｃはこれと直角
方向に開口するように並列して設けられている。枝部の
数はこれに限定されることはないが、主管接続部３から
流入した流体は直角方向に曲がり分配され分岐管を通っ
て目的部に供給される。なお、このヘッダーは図面の後
側に位置する建物の壁に取付け金具等によって固定され
る。枝部４ａ，４ｂ，４ｃの内部は分岐管の接続部とな
っている。例えば枝部４ｃについていえば、胴体側の内
径は比較的小径の呼び径、例えば10mmの分岐管の外径に
対応した径の接続部５ｃに形成し、その次の接続部６ｃ
は５ｃより大径の例えば13mmの分岐管に対応した径に形
成している。このように本実施例では呼び径10mm，又は
13mmの２段の接続部を連結して設けている。Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment, and FIG. 1 is a sectional view after a branch pipe is connected to a header. FIG. 2 is a perspective view showing the form of the heating wire. FIG. 3 is a front view of FIG. In the header 1, a hollow cylindrical body 2 and a cylindrical main pipe connecting portion 3 and branch portions 4a, 4b and 4c for connecting a plurality of branch pipes are integrally formed of polybutene. Main pipe connecting part 3 is body part 2
The branch portions 4a, 4b, and 4c are provided in parallel with each other so that the branch portions 4a, 4b, and 4c are opened at one end side thereof. Although the number of branch portions is not limited to this, the fluid flowing from the main pipe connecting portion 3 is bent at right angles and distributed, and is supplied to the target portion through the branch pipe. The header is fixed to the wall of the building located on the rear side of the drawing by a mounting bracket or the like. The insides of the branch portions 4a, 4b, 4c are the connecting portions of the branch pipes. For example, in the case of the branch portion 4c, the inner diameter on the body side is formed as a connecting portion 5c having a relatively small nominal diameter, for example, a diameter corresponding to the outer diameter of the branch pipe of 10 mm, and the next connecting portion 6c.
Has a diameter corresponding to a branch pipe having a diameter larger than 5c, for example, 13 mm. Thus, in this embodiment, the nominal diameter is 10 mm, or
It is provided by connecting the 13mm two-stage connection part.

【０００９】そして、この接続部の内周面には各々独立
して電熱線を埋設している。従って、接続部５ｃと６ｃ
を別個に融着することができる。この電熱線の巻き方等
の形態は、図２に示すように接続部５については２条巻
きした電熱線７を設け、一対のコネクターピン97を並列
に取り出している。また接続部６についても同様に２条
巻きした電熱線８を設け、コネクターピン98を並列に取
り出している。このような電熱線の巻き方をすれば、コ
ネクターピンが隣同士で近くに位置している分、コネク
ターピン接続に要する軸方向の長さが省略できるので、
２段の接続部を設けても比較的枝部の長さを短く抑える
ことができる。（従来のコネクターピンを両端に離して
設けたものよりは短くてすむ。）また、コネクターピン
が並んでいるのでコントローラ側のコネクターを差し込
み易いし融着状態を確認するインジケータ等も見やすい
などの利点がある。Further, heating wires are independently embedded in the inner peripheral surface of the connecting portion. Therefore, the connecting portions 5c and 6c
Can be fused separately. With respect to the form of winding of the heating wire, as shown in FIG. 2, the connection part 5 is provided with a double heating wire 7, and a pair of connector pins 97 are taken out in parallel. Similarly, the connecting portion 6 is also provided with a double heating wire 8 and the connector pins 98 are taken out in parallel. By winding the heating wire in this way, the connector pins are located close to each other, so the axial length required to connect the connector pins can be omitted.
Even if two connecting portions are provided, the length of the branch portion can be relatively shortened. (It is shorter than the conventional connector pins that are provided at both ends.) Also, because the connector pins are lined up, it is easy to insert the connector on the controller side and it is easy to see the indicator etc. to confirm the fusion state. There is.

【００１０】次に分岐管を融着接続する場合について説
明する。今、呼び径13mmの分岐管40と同じく10mmの分岐
管50ａ，50ｂをヘッダーに融着しようとすると、例えば
分岐管40は接続部６ｃへ挿入し、一方分岐管50ａは接続
部５ａへ、分岐管50ｂは接続部５ｂへそれぞれ挿入す
る。そしてヘッダーと各分岐管を適宜の固定手段で固定
し、コネクターピン97ａ，97ｂ，98ｃへコントローラの
コネクターをそれぞれ接続する。その後、電流を流して
電熱線を加熱して樹脂を溶融して両者を融着する。冷却
がすめば固定手段をはずして（あるいはそのままでも良
い）接続作業が完了する。Next, the case where the branch pipes are fusion-spliced will be described. Now, when trying to fuse the 10 mm branch pipes 50a and 50b to the header as well as the branch pipe 40 having the nominal diameter of 13 mm, for example, the branch pipe 40 is inserted into the connection portion 6c, while the branch pipe 50a is branched into the connection portion 5a. The tubes 50b are respectively inserted into the connecting portions 5b. Then, the header and each branch pipe are fixed by appropriate fixing means, and the connector of the controller is connected to the connector pins 97a, 97b, 98c, respectively. Then, an electric current is applied to heat the heating wire to melt the resin and fuse the two. When cooling is completed, the fixing means is removed (or it may be left as it is), and the connection work is completed.

【００１１】本発明の他の実施例としては適宜考えられ
るが、例えば、２段の接続部でなくとも３段、４段の接
続部を形成してもよく、そのときの対応する呼び径は各
々の枝部によって変化させるなどすればよい。また、主
管接続部３についても本発明を実施して電気融着式の接
続部としてもよい。Although another embodiment of the present invention can be considered as appropriate, for example, not only two connecting portions but also three connecting portions or four connecting portions may be formed, and the corresponding nominal diameter at that time is It may be changed depending on each branch. Further, the main pipe connecting portion 3 may be an electric fusion type connecting portion by implementing the present invention.

【００１２】[0012]

【発明の効果】本発明のヘッダーによれば、１つの枝部
に対し、少なくとも呼び径の異なる２つの管に対してど
ちらでも融着することができ、現場で臨機応変に対応で
き、能率的な作業ができる。また、２管種対応の割りに
は枝部の長さは短く抑えることができ全体的にコンパク
トなヘッダーとなった。According to the header of the present invention, one branch portion can be fused to at least two pipes having different nominal diameters, which can be flexibly coped with on-site and efficient. You can do various tasks. In addition, the length of the branch can be kept short for two pipe types, resulting in a compact header overall.

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

【図１】 本発明の一実施例を示すヘッダーの断面図で
ある。FIG. 1 is a sectional view of a header showing an embodiment of the present invention.

【図２】 電熱線の巻き方の例を示す斜視図である。FIG. 2 is a perspective view showing an example of a method of winding a heating wire.

【図３】 図１の正面図である。FIG. 3 is a front view of FIG.

【図４】 従来のヘッダーの例を示す断面図である。FIG. 4 is a sectional view showing an example of a conventional header.

【図５】 従来の他のヘッダーの例を示す一部断面図で
ある。FIG. 5 is a partial cross-sectional view showing another example of a conventional header.

【符号の説明】[Explanation of symbols]

１…ヘッダー本体 ２…胴部 ３…主管接続部 ４…枝部 ５…１段目の接続部 ６…２段目の接続部 ７…１段目の電熱線 ８…２段目の電熱線 97，98…コネクターピン 40，50…分岐管 1 ... Header body 2 ... Body part 3 ... Main pipe connection part 4 ... Branch part 5 ... First stage connection part 6 ... Second stage connection part 7 ... First stage heating wire 8 ... Second stage heating wire 97 , 98… Connector pins 40, 50… Branch pipe

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 主管接続部を有する胴体と、複数の分岐
管を接続するための枝部とを有する熱可塑性樹脂からな
るヘッダー継手において、前記それぞれの枝部の内径を
胴体側を小径とし、先端側に向けて大径となる少なくと
も２段の接続部とし、各接続部の異径内周面にそれぞれ
独立して電熱線を設けたことを特徴とする電気融着式ヘ
ッダー継手。1. A header joint made of a thermoplastic resin having a body having a main pipe connecting portion and a branch portion for connecting a plurality of branch pipes, wherein each of the branch portions has a small inner diameter on the body side, An electric fusion-bonding header joint, characterized in that at least two stages of connecting portions having a large diameter toward the tip side are provided, and heating wires are independently provided on the inner peripheral surfaces having different diameters of each connecting portion.
JP5119549A 1993-05-21 1993-05-21 Electric fusion type header joint Pending JPH06331088A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5119549A JPH06331088A (en) 1993-05-21 1993-05-21 Electric fusion type header joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5119549A JPH06331088A (en) 1993-05-21 1993-05-21 Electric fusion type header joint

Publications (1)

Publication Number Publication Date
JPH06331088A true JPH06331088A (en) 1994-11-29

Family

ID=14764065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5119549A Pending JPH06331088A (en) 1993-05-21 1993-05-21 Electric fusion type header joint

Country Status (1)

Country Link
JP (1) JPH06331088A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001193886A (en) * 1999-11-10 2001-07-17 Georg Fischer Haustechnik Ag Arrangement for fluid pipe connection
JP2019071948A (en) * 2017-10-12 2019-05-16 三井化学産資株式会社 Branch header

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001193886A (en) * 1999-11-10 2001-07-17 Georg Fischer Haustechnik Ag Arrangement for fluid pipe connection
JP2019071948A (en) * 2017-10-12 2019-05-16 三井化学産資株式会社 Branch header

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