JPH09280461A - Branch pipe joint - Google Patents
Branch pipe jointInfo
- Publication number
- JPH09280461A JPH09280461A JP8119706A JP11970696A JPH09280461A JP H09280461 A JPH09280461 A JP H09280461A JP 8119706 A JP8119706 A JP 8119706A JP 11970696 A JP11970696 A JP 11970696A JP H09280461 A JPH09280461 A JP H09280461A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- main pipe
- saddle
- joint
- wall
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/04—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor
- F16L41/06—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor making use of attaching means embracing the pipe
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Surface Heating Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、上下水道やガスの
配管として近年用いられているポリエチレンなどの合成
樹脂製の本管の管壁に金属製の枝管を接続させるための
鋳鉄などの金属製の分岐管継手における漏れ防止技術に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal pipe such as cast iron for connecting a metal branch pipe to a pipe wall of a main pipe made of a synthetic resin such as polyethylene which is recently used as a pipe for water supply and sewage and gas. The present invention relates to a technique for preventing leakage in a branch pipe joint made of steel.
【０００２】[0002]
【従来の技術】従来の分岐管継手は、図６及び図７に示
すように、中央部に円形の貫通穴（１）（分岐穴と同時
に明ける場合もある。）を有し、且つ、接合すべき合成
樹脂製の本管（２）の管外壁と同じ曲率のサドル接合面
（サドル内面）を有する略半割り筒状（鞍形）のサドル
（３）と、貫通穴（１）の周囲よりサドル（３）外面に
突出形成し、且つ、継手先端部に接合すべき金属製の枝
管（４）の管端に対するオネジ、メネジ、ユニオン、回
転・摺動自在などの接合手段（５）を有する筒状の継手
本体（６）と、貫通穴（１）の周囲に形成するサドル
（３）の円形パッキン嵌込み部（３ａ）に装着される環
状のゴムパッキン（７）とで構成され、本管（２）の管
外壁と同じ曲率の接合面（内面）を有する略半割り筒状
のサドル締付け座金（８）と前記サドル（３）を本管
（２）の管外壁で抱き合わせると共に、座金（８）とサ
ドル（３）の側端縁より突出して対向するフランジ
（９）（１０）間に締付けボルト（１１）を締付けナッ
ト（１２）を介して掛け、座金（８）とサドル（３）を
本管（２）の管外壁に締付ける。これによって、本管
（２）の管外壁に分岐管継手が取付けられ、且つ、貫通
穴（１）の周囲でパッキン（７）がサドル（３）内面と
本管（２）の管外壁に圧着し、止水が行われる。そし
て、本管（２）に分岐管継手を取付けた後、その継手本
体（６）の継手先端部開口よりドリルなどの穴明け工具
を挿入し、貫通穴（１）に対応する本管（２）の管壁に
円形の分岐穴（１３）を明け、その後、継手本体（６）
の継手先端部に枝管（４）を接合手段（５）を介して接
合させる。これによって、本管（２）の管壁からの枝管
（４）の分岐が行われる。2. Description of the Related Art As shown in FIGS. 6 and 7, a conventional branch pipe joint has a circular through hole (1) at the center (it may be drilled at the same time as the branch hole) and is joined. A substantially half-cylindrical (saddle-shaped) saddle (3) having a saddle joint surface (saddle inner surface) having the same curvature as the outer wall of the main pipe (2) made of a synthetic resin to be formed, and a periphery of the through hole (1). A joining means (5) such as a male screw, a female screw, a union, and freely rotatable and slidable with respect to the pipe end of a metal branch pipe (4) to be formed so as to project from the outer surface of the saddle (3) and to be joined to the joint tip. And a ring-shaped rubber packing (7) mounted on a circular packing fitting portion (3a) of a saddle (3) formed around the through hole (1). , A substantially half-tubular saddle fastening washer having a joint surface (inner surface) having the same curvature as the outer wall of the main tube (2). 8) and the saddle (3) are held together by the outer wall of the main pipe (2), and clamped between the washer (8) and the flanges (9) (10) that project from the side edge of the saddle (3) and face each other. The bolt (11) is hung via the tightening nut (12), and the washer (8) and the saddle (3) are tightened on the outer wall of the main pipe (2). Thereby, the branch pipe joint is attached to the outer pipe wall of the main pipe (2), and the packing (7) is crimped to the inner surface of the saddle (3) and the outer pipe wall of the main pipe (2) around the through hole (1). Then, the water is stopped. Then, after attaching the branch pipe joint to the main pipe (2), a drilling tool such as a drill is inserted into the joint main body (6) through an opening at the end of the joint, and the main pipe (2) corresponding to the through hole (1) is inserted. ), A circular branch hole (13) is made in the pipe wall, and then the joint body (6) is formed.
The branch pipe (4) is joined to the joint tip of the above (1) via the joining means (5). Thereby, the branch pipe (4) branches from the pipe wall of the main pipe (2).
【０００３】[0003]
【発明が解決しようとする課題】本管（２）が合成樹脂
管の場合、パッキン（７）の圧着力によるクリープ現
象、並びに、本管（２）のたわみ（合成樹脂管の特性）
による分岐穴（１３）の延び変形、によって本管（２）
の分岐穴（１３）の周囲の管壁が内側に湾曲変形し、パ
ッキン（７）が働かなくなり、漏れが発生する問題があ
った。When the main pipe (2) is a synthetic resin pipe, the creep phenomenon due to the pressing force of the packing (7) and the deflection of the main pipe (2) (characteristics of the synthetic resin pipe).
Main branch (2) due to extension and deformation of branch hole (13) due to
There is a problem that the pipe wall around the branch hole (13) is curvedly deformed inward, the packing (7) does not work, and leakage occurs.
【０００４】[0004]
【課題を解決するための手段】然るに、本発明は、合成
樹脂製の本管の管壁に金属製の枝管を接続させる金属製
の分岐管継手であって、本管の管壁に接合させるサドル
と、サドル上面に突出する筒状の継手本体と、サドルと
本管の間に配置する弾性材より成るパッキンとを備えた
分岐管継手において、パッキンの内側でサドルと本管の
間に配置する合成樹脂製の補強環体を備え、この補強環
体の本管の管壁との接触面には通電によって加熱される
発熱体を設け、本管の管壁に補強環体を融着することに
より、本管の分岐穴の周囲の管壁を部分的に肉厚にして
該部の強度を高め、パッキンの圧着力によるクリープ現
象、並びに、本管のたわみによる分岐穴の変形、によっ
て本管の分岐穴の周囲の管壁が内側に湾曲変形するのを
防止し、パッキンを適正に働かせて、漏れの発生を防止
するものである。SUMMARY OF THE INVENTION The present invention is directed to a metal branch pipe joint for connecting a metal branch pipe to a pipe wall of a main pipe made of synthetic resin, which is joined to a pipe wall of the main pipe. In a branch pipe joint including a saddle to be made, a tubular joint main body protruding from the upper surface of the saddle, and a packing made of an elastic material disposed between the saddle and the main pipe, between the saddle and the main pipe inside the packing. A reinforcing ring made of synthetic resin to be placed is provided, and a heating element heated by energization is provided on the contact surface of the reinforcing ring with the pipe wall of the main pipe, and the reinforcing ring is fused to the pipe wall of the main pipe. By doing so, the pipe wall around the branch hole of the main pipe is partially thickened to increase the strength of the part, and the creep phenomenon due to the crimping force of the packing, and the deformation of the branch hole due to the deflection of the main pipe, Prevents the pipe wall around the branch hole of the main pipe from bending inward and packing. Properly and worked, it is intended to prevent the occurrence of leakage.
【０００５】また、補強環体が本管の管壁の突起にな
り、その突起にサドルが嵌合されて本管に取付けられる
ので、本管に対する分岐管継手の回転及び前後のずれが
防止され、本管の分岐穴に対する分岐管継手の位置ずれ
による漏れも同時に防止するものである。Further, since the reinforcing ring forms a projection on the pipe wall of the main pipe, and a saddle is fitted to the projection and attached to the main pipe, rotation of the branch pipe joint with respect to the main pipe and displacement between the front and rear are prevented. In addition, leakage due to displacement of the branch pipe joint with respect to the branch hole of the main pipe is simultaneously prevented.
【０００６】さらに、前記発熱体は一本の発熱線を中間
部で折り返して平面上で外側から内側に巻回し板状に保
形して製造され、発熱線の両端を中央部より引出すこと
により、本管に分岐管継手を取付けた状態で、継手本体
の内部又は継手本体の継手先端部開口より外部に、発熱
体の発熱線の両端を引出して電気を供給し得、融着作業
が簡単に、且つ、適正に行い得るものである。Further, the heating element is manufactured by folding a single heating wire at an intermediate portion, winding the heating wire from outside to inside on a plane, and keeping the shape of a plate, and drawing both ends of the heating wire from a central portion. With the branch pipe joint attached to the main pipe, both ends of the heating wire of the heating element can be drawn out of the joint body or outside through the joint tip opening of the joint body to supply electricity, facilitating the fusion work. And can be performed appropriately.
【０００７】[0007]
【発明の実施の形態】以下本発明の実施例を図面に基づ
いて詳述する。図１及び図２は本発明に係る分岐管継手
を示すものであって、中央部に円形の貫通穴（２０）
（分岐穴と同時に明ける場合もある。）を有し、且つ、
接合すべき合成樹脂製の本管（２１）の管外壁と同じ曲
率のサドル接合面（サドル内面）を有する略半割り筒状
（鞍形）のサドル（２２）と、貫通穴（２０）の周囲よ
りサドル（２２）外面に（本管（２１）の半径方向に）
突出形成し、且つ、継手先端部に接合すべき金属製の枝
管（４）の管端に対するオネジ、メネジ、ユニオン、回
転・摺動自在などの接合手段（２４）（実施例ではメネ
ジを図示している）を有する筒状の継手本体（２５）
と、貫通穴（２０）の周囲に形成するサドル（２２）の
円形パッキン嵌込み部（２２ａ）に装着される環状のゴ
ムパッキン（２６）とで構成され、本管（２１）の管外
壁と同じ曲率の接合面（内面）を有する略半割り筒状の
サドル締付け座金（２７）と前記サドル（２２）を本管
（２１）の管外壁で抱き合わせると共に、座金（２７）
とサドル（２２）の側端縁より突出して対向するフラン
ジ（２８）（２９）間に締付けボルト（３０）を締付け
ナット（３１）を介して掛け、座金（２７）とサドル
（２２）を本管（２１）の管外壁に締付ける。これによ
って、本管（２１）の管外壁に分岐管継手が取付けら
れ、且つ、貫通穴（２０）の周囲でパッキン（２６）が
サドル（２２）内面と本管（２１）の管外壁に圧着し、
止水が行われる。そして、本管（２１）に分岐管継手を
取付けた後、その継手本体（２５）の継手先端部開口よ
りドリルなどの穴明け工具を挿入し、貫通穴（２０）に
対応する本管（２１）の管壁に円形の分岐穴（３２）を
明け、その後、継手本体（２５）の継手先端部に枝管
（２３）を接合手段（２４）を介して接合させる。これ
によって、本管（２１）の管壁からの枝管（２３）の分
岐が行われる。Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 show a branch pipe joint according to the present invention, in which a circular through hole (20) is provided at the center.
(May be drilled at the same time as the branch hole.)
A substantially half-cylinder (saddle-shaped) saddle (22) having a saddle joint surface (saddle inner surface) having the same curvature as the outer tube wall of the synthetic resin main tube (21) to be joined, and a through hole (20). On the outer surface of the saddle (22) from the periphery (in the radial direction of the main pipe (21))
A joining means (24) such as a male screw, a female screw, a union, and rotatable and slidable with respect to a pipe end of a metallic branch pipe (4) to be formed to be projected and to be joined to a joint tip portion (in the embodiment, a female screw is shown). Tubular joint body (25)
And an annular rubber packing (26) mounted on a circular packing fitting portion (22a) of a saddle (22) formed around the through hole (20), and an outer wall of the main pipe (21). The saddle fastening washer (27), which is substantially half-split and has the same curvature (joint surface) (inner surface), and the saddle (22) are held together by the outer wall of the main pipe (21), and the washer (27)
A fastening bolt (30) is hung between a flange (28) (29) protruding from a side edge of the saddle (22) and a facing nut via a fastening nut (31), and a washer (27) and a saddle (22) are attached to a book. Tighten to the outer wall of the pipe (21). Thereby, the branch pipe joint is attached to the outer pipe wall of the main pipe (21), and the packing (26) is crimped to the inner surface of the saddle (22) and the outer pipe wall of the main pipe (21) around the through hole (20). And
Water shutoff is performed. Then, after attaching the branch pipe joint to the main pipe (21), a drilling tool such as a drill is inserted into the joint main body (25) through an opening of the joint tip, and the main pipe (21) corresponding to the through hole (20) is inserted. ), A circular branch hole (32) is made in the pipe wall, and then the branch pipe (23) is joined to the joint tip of the joint body (25) via the joining means (24). Thereby, the branch pipe (23) branches from the pipe wall of the main pipe (21).
【０００８】また、本発明の分岐管継手におけるサドル
（２２）のパッキン嵌込み部（２２ａ）は貫通穴（２
０）の周囲に所定の間隔を設けて形成されており、この
パッキン嵌込み部（２２ａ）内側でサドル（２２）の貫
通穴（２０）の周囲に円形の補強環体嵌込み部（２２
ｂ）が形成され、パッキン（２６）の内側で、且つ、貫
通穴（２０）周囲でサドル（２２）と本管（２１）の間
に合成樹脂製の補強環体（３３）が配置される。Further, in the branch pipe joint according to the present invention, the packing fitting portion (22a) of the saddle (22) has a through hole (2).
0), and is formed at a predetermined interval around the through hole (20) of the saddle (22) inside the packing fitting portion (22a).
b) is formed, and a reinforcing ring made of synthetic resin (33) is arranged between the saddle (22) and the main pipe (21) inside the packing (26) and around the through hole (20). .
【０００９】尚、前記パッキン（２６）には補強環体
（３３）の外周側から上面に被せる肉薄な補助パッキン
（２６ａ）を上面内周縁より延設し、サドル（２２）の
補強環体嵌込み部（２２ｂ）の内面に水が回り、さびを
発生させるのを防止している。The packing (26) has a thin auxiliary packing (26a) that extends from the outer peripheral side of the reinforcing ring (33) to the upper surface and extends from the inner peripheral edge of the upper surface, and the saddle (22) is fitted with the reinforcing ring. Water is prevented from flowing around the inner surface of the insertion portion (22b) to generate rust.
【００１０】前記補強環体（３３）はドーナツ形で下面
に本管（２１）の管外壁の曲率と同じ曲率を与えてお
り、貫通穴（２０）の周囲で本管（２１）の管外壁に補
強環体（３３）の下面が接合される。その補強環体（３
３）の下面に発熱体（３４）が装着されている。この発
熱体（３４）は図３及び図４に示すように、ニッケル等
の導線（３４ａ）の周囲にガラス繊維網組等による絶縁
層（３４ｂ）を介して合成樹脂被膜（３４ｃ）が被覆さ
れた一本の発熱線を中間部で折り返して平面状で螺旋板
状に巻回し、部分融着又は部分接着で円板状に保形し、
両端部を中央部から引出して接続端子（３４ｄ）（３４
ｄ）として構成されており、この発熱体（３４）への補
強環体（３３）の装着は、補強環体（３３）を成形時に
発熱体（３４）を同時にインサートするが、補強環体
（３３）を成形時に発熱体装着溝を同時に形成して成形
後に装着する方法がある。また発熱体（３４）は補強環
体（３３）の内径と同じ内径になった位置で巻回しを止
める場合と、中心まで中実に巻回す場合があり、前者で
は接続端子（３４ｄ）（３４ｄ）が補強環体（３３）の
内周面より貫通穴（２０）内部に突出し、サドル（２
２）を本管（２１）に取付ける前に電源線を継手本体
（２５）の継手先端部開口より挿入して前記接続端子
（３４ｄ）（３４ｄ）に接続しておき、それからサドル
（２２）の本管（２１）の取付けを行ったり、先端に接
続端子（３４ｄ）（３４ｄ）と接続可能な継手本体（２
５）より長い棒状の電源コネクタを設け、サドル（２
２）を本管（２１）に取付けた後、コネクタを継手本体
（２５）の継手先端部開口より挿入してこの先端に接続
端子（３４ｄ）（３４ｄ）を接続させるなどの手段で、
発熱体（３４）に通電することができ、後者ではサドル
（２２）を本管（２１）に取付けた後貫通穴（２０）の
中心部に位置する接続端子（３４ｄ）（３４ｄ）を発熱
体（３４）の内径が補強環体（３３）の内径になるまで
継手本体（２５）の継手先端部開口より引出し、電源線
に接続する手段で、発熱体（３４）に通電することがで
き、特に後者では水回りの作業で継手本体（２５）内部
での電気接続では接続端子（３４ｄ）（３４ｄ）が水に
触れる場合に有効であり、効果的である。The reinforcing ring (33) has a donut shape and its lower surface has the same curvature as the outer wall of the main pipe (21), and the outer wall of the main pipe (21) is provided around the through hole (20). The lower surface of the reinforcing ring (33) is joined to the lower ring. The reinforcing ring (3
A heating element (34) is mounted on the lower surface of 3). As shown in FIGS. 3 and 4, the heating element (34) has a synthetic resin film (34c) coated around a conductive wire (34a) of nickel or the like via an insulating layer (34b) of a glass fiber braid or the like. One heating wire is folded back in the middle part, wound in a flat spiral shape, and shaped into a disk by partial fusion or partial adhesion,
Both ends are pulled out from the center and the connection terminals (34d) (34)
When the reinforcing ring (33) is attached to the heating element (34), the heating element (34) is simultaneously inserted when the reinforcing ring (33) is molded. 33), there is a method in which a heating element mounting groove is simultaneously formed at the time of molding and then mounted after molding. Further, the heating element (34) may be wound at a position where the inner diameter is the same as the inner diameter of the reinforcing ring body (33) or may be wound to the center solidly. In the former case, the connection terminals (34d) (34d) Project inside the through hole (20) from the inner peripheral surface of the reinforcing ring (33), and the saddle (2
Before attaching 2) to the main pipe (21), a power supply line is inserted from the joint tip opening of the joint body (25) and connected to the connection terminals (34d) and (34d), and then the saddle (22) is connected. The joint body (2) that can be attached to the main pipe (21) or can be connected to the connection terminals (34d) (34d) at the end.
5) Provide a longer rod-shaped power connector, and use the saddle (2
After 2) is attached to the main pipe (21), a connector is inserted through the joint tip opening of the joint body (25), and connection terminals (34d) and (34d) are connected to the tip, for example.
The heating element (34) can be energized. In the latter case, after connecting the saddle (22) to the main pipe (21), the connection terminals (34d) (34d) located at the center of the through hole (20) are connected to the heating element. Until the inside diameter of (34) becomes the inside diameter of the reinforcing ring (33), it can be pulled out from the joint tip opening of the joint body (25), and the heating element (34) can be energized by means for connecting to the power line, In particular, the latter is effective and effective when the connection terminals (34d) (34d) come into contact with water in the electrical connection inside the joint body (25) in the work around the water.
【００１１】そして、サドル（２２）を本管（２１）に
取付けた後で、分岐穴（３２）を明ける前に、発熱体
（３４）に通電して図５に示すように本管（２１）の管
外壁に補強環体（３３）を融着し、その後、補強環体
（３３）の内側の本管（２１）の管外壁に分岐穴（３
２）を明ける。これによって本管（２１）の分岐穴（３
２）の周囲の管壁が部分的に肉厚に形成され、該部の強
度が高まり、パッキン（２６）の圧着力によるクリープ
現象、並びに、本管（２１）のたわみによる分岐穴（３
２）の延び変形、によって本管（２１）の分岐穴（３
２）の周囲の管壁が内側に湾曲変形するのが防止され、
パッキン（２６）を適正に働かせて、漏れの発生を防止
している。After the saddle (22) is attached to the main pipe (21), and before the branch hole (32) is opened, the heating element (34) is energized as shown in FIG. ), The reinforcing ring (33) is fused to the outer wall of the pipe, and then the branch hole (3) is formed in the outer wall of the main pipe (21) inside the reinforcing ring (33).
Open 2). Thereby, the branch hole (3) of the main pipe (21) is formed.
The wall of the pipe around (2) is partially thickened, the strength of this part is increased, the creep phenomenon due to the crimping force of the packing (26), and the branch hole (3) due to the deflection of the main pipe (21).
2), the branch hole (3) of the main pipe (21) is extended.
The tube wall around 2) is prevented from being curved inward,
The packing (26) works properly to prevent leakage.
【００１２】また、図５に示すように補強環体（３３）
が本管（２１）の管壁の突起となり、その突起にサドル
（２２）が嵌合されて本管（２１）に取付けられるの
で、本管（２１）に対する分岐管継手の回転及び前後の
ずれが防止され、本管（２１）の分岐穴（３２）に対す
る分岐管継手の位置ずれによる漏れも同時に防止してい
る。Also, as shown in FIG. 5, a reinforcing ring (33)
Becomes a projection on the pipe wall of the main pipe (21), and the saddle (22) is fitted to the projection and attached to the main pipe (21). Is prevented, and leakage due to displacement of the branch pipe joint with respect to the branch hole (32) of the main pipe (21) is also prevented at the same time.
【００１３】尚、本管（２１）及び補強環体（３３）及
び発熱体（３４）の発熱線の被覆（３４ｃ）の成形材料
は熱可塑性の合成樹脂であって、本管（２１）の成形材
料に統一され、例えば本管（２１）の成形材料がポリエ
チレン（又はポリブデン）の場合補強環体（３３）及び
発熱体（３４）の発熱線の被覆（３４ｃ）の成形材料も
ポリエチレン（又はポリブデン）となる。The molding material of the main pipe (21) and the covering (34c) of the heating wire of the reinforcing ring (33) and the heating element (34) is a thermoplastic synthetic resin. For example, when the molding material of the main pipe (21) is polyethylene (or polybutene), the molding material of the reinforcing ring (33) and the covering (34c) of the heating wire of the heating element (34) is also polyethylene (or). Polybutene).
【００１４】[0014]
【発明の効果】以上実施例から明らかなように本発明
は、合成樹脂製の本管（２１）の管壁に金属製の枝管
（２３）を接続させる金属製の分岐管継手であって、本
管（２１）の管壁に接合させるサドル（２２）と、サド
ル（２２）上面に突出する筒状の継手本体（２５）と、
サドル（２２）と本管（２１）の間に配置する弾性材よ
り成るパッキン（２６）とを備えた分岐管継手におい
て、パッキン（２６）の内側でサドル（２２）と本管
（２１）の間に配置する合成樹脂製の補強環体（３３）
を備え、この補強環体（３３）の本管（２１）の管壁と
の接触面には通電によって加熱される発熱体（３４）を
設け、本管（２１）の管壁に補強環体（３３）を融着す
ることにより、本管（２１）の分岐穴（３２）の周囲の
管壁を部分的に肉厚にして該部の強度を高め、パッキン
（２６）の圧着力によるクリープ現象、並びに、本管
（２１）のたわみによる分岐穴（３２）の変形、によっ
て本管（２１）の分岐穴（２２）の周囲の管壁が内側に
湾曲変形するのを防止し、パッキン（２６）を適正に働
かせて、漏れの発生を防止する効果がある。As is apparent from the above embodiments, the present invention relates to a metal branch pipe joint for connecting a metal branch pipe (23) to a pipe wall of a synthetic resin main pipe (21). A saddle (22) to be joined to the pipe wall of the main pipe (21), a tubular joint body (25) projecting from the upper surface of the saddle (22),
In a branch pipe joint provided with a packing (26) made of an elastic material disposed between a saddle (22) and a main pipe (21), the saddle (22) and the main pipe (21) are connected inside the packing (26). Reinforcing ring made of synthetic resin placed between (33)
A heating element (34) heated by energization is provided on a contact surface of the reinforcing ring (33) with the pipe wall of the main pipe (21), and a reinforcing ring is provided on the pipe wall of the main pipe (21). By fusing (33), the pipe wall around the branch hole (32) of the main pipe (21) is partially thickened to increase the strength of the section, and creep due to the crimping force of the packing (26) This prevents the pipe wall around the branch hole (22) of the main pipe (21) from being bent inward by the phenomenon and the deformation of the branch hole (32) due to the deflection of the main pipe (21), and the packing ( 26) has the effect of preventing leaks from occurring by properly operating.
【００１５】また、補強環体（３３）が本管（２１）の
管壁の突起になり、その突起にサドル（２２）が嵌合さ
れて本管（２１）に取付けられるので、本管（２１）に
対する分岐管継手の回転及び前後のずれが防止され、本
管（２１）の分岐穴（３２）に対する分岐管継手の位置
ずれによる漏れも同時に防止する効果がある。The reinforcing ring (33) becomes a projection on the pipe wall of the main pipe (21), and the saddle (22) is fitted to the projection and attached to the main pipe (21). Rotation of the branch pipe joint with respect to 21) and displacement of the branch pipe joint with respect to front and back are prevented, and leakage due to displacement of the branch pipe joint with respect to the branch hole (32) of the main pipe (21) is also simultaneously prevented.
【００１６】さらに、前記発熱体（３４）は一本の発熱
線を中間部で折り返して平面上で外側から内側に巻回し
板状に保形して製造され、発熱線の両端を中央部より引
出すことにより、本管（２１）に分岐管継手を取付けた
状態で、継手本体（２５）の内部又は継手本体（２５）
の継手先端部開口より外部に、発熱体（３４）の発熱線
の両端を引出して電気を供給でき、融着作業が簡単に、
且つ、適正に行うことができる効果がある。Further, the heating element (34) is manufactured by folding one heating wire at an intermediate portion, winding the heating wire from outside to inside on a plane, and keeping the shape of a plate, and both ends of the heating wire from the center portion. By pulling out, the inside of the joint body (25) or the joint body (25) with the branch pipe joint attached to the main pipe (21)
Both ends of the heating wire of the heating element (34) can be drawn to the outside from the opening of the joint tip portion of, and electricity can be supplied, facilitating fusion work,
In addition, there is an effect that it can be performed properly.
【図１】本発明に係る分岐管継手の断面側面図。FIG. 1 is a sectional side view of a branch pipe joint according to the present invention.
【図２】同断面側面図。FIG. 2 is a sectional side view of the same.
【図３】発熱体の外観斜視図。FIG. 3 is an external perspective view of a heating element.
【図４】発熱線の説明図。FIG. 4 is an explanatory diagram of a heating wire.
【図５】補強環体の融着状態を示す本管の外観斜視図。FIG. 5 is an external perspective view of the main pipe showing a fused state of the reinforcing ring.
【図６】従来の分岐管継手の断面正面図。FIG. 6 is a sectional front view of a conventional branch pipe joint.
【図７】同断面側面図。FIG. 7 is a sectional side view of the same.
（２１） 本管 （２２） サドル （２３） 枝管 （２５） 継手本体 （２６） パッキン （３２） 分岐穴 （３３） 補強環体 （３４） 発熱体 (21) Main pipe (22) Saddle (23) Branch pipe (25) Joint body (26) Packing (32) Branch hole (33) Reinforcing ring (34) Heating element
Claims (2)
を接続させる金属製の分岐管継手であって、本管の管壁
に接合させるサドルと、サドル上面に突出する筒状の継
手本体と、サドルと本管の間に配置する弾性材より成る
パッキンとを備えた分岐管継手において、パッキンの内
側でサドルと本管の間に配置する合成樹脂製の補強環体
を備え、この補強環体の本管の管壁との接触面には通電
によって加熱される発熱体を設け、本管の管壁に補強環
体を融着することを特徴とする分岐管継手。1. A metal branch pipe joint for connecting a metal branch pipe to a pipe wall of a synthetic resin main pipe, a saddle joined to the pipe wall of the main pipe, and a cylinder protruding from the upper surface of the saddle. In a branch pipe joint comprising a joint body in the shape of a letter and a packing made of an elastic material disposed between the saddle and the main pipe, a reinforcing ring made of synthetic resin disposed between the saddle and the main pipe inside the packing is provided. A branch pipe joint comprising: a heating element heated by energization provided on a contact surface of the reinforcing ring with a pipe wall of the main pipe; and the reinforcing ring fused to the pipe wall of the main pipe.
り返して平面上で外側から内側に巻回し板状に保形して
製造され、発熱線の両端を中央部より引出すことを特徴
とする請求項１記載の分岐管継手。2. The heating element is manufactured by folding one heating wire at an intermediate portion, winding the heating wire from outside to inside on a plane, and keeping the shape of a plate, and drawing both ends of the heating wire from a central portion. The branch pipe joint according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8119706A JP2756952B2 (en) | 1996-04-16 | 1996-04-16 | Branch pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8119706A JP2756952B2 (en) | 1996-04-16 | 1996-04-16 | Branch pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09280461A true JPH09280461A (en) | 1997-10-31 |
| JP2756952B2 JP2756952B2 (en) | 1998-05-25 |
Family
ID=14768084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8119706A Expired - Fee Related JP2756952B2 (en) | 1996-04-16 | 1996-04-16 | Branch pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2756952B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030092733A (en) * | 2002-05-31 | 2003-12-06 | 이정연 | Coupling manufactured by pressing for connecting manifold |
| KR20040011191A (en) * | 2002-07-29 | 2004-02-05 | 이도연 | Coupling for connecting branch pipe in which the branch pipe connector is divided into two |
| JP2013035076A (en) * | 2011-08-03 | 2013-02-21 | Cosmo Koki Co Ltd | Fluid pipe cutting method |
| CN103586619A (en) * | 2013-11-08 | 2014-02-19 | 上海锅炉厂有限公司 | Large-caliber pipe connector assembly device |
| KR20150000765U (en) * | 2013-08-14 | 2015-02-25 | 대우조선해양 주식회사 | Reinforcing Apparatus for Branch pipe |
| CN108869923A (en) * | 2018-06-15 | 2018-11-23 | 江苏英杰铝业有限公司 | The end pipe bonding agency of aluminum profile water-cooled radiator |
-
1996
- 1996-04-16 JP JP8119706A patent/JP2756952B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030092733A (en) * | 2002-05-31 | 2003-12-06 | 이정연 | Coupling manufactured by pressing for connecting manifold |
| KR20040011191A (en) * | 2002-07-29 | 2004-02-05 | 이도연 | Coupling for connecting branch pipe in which the branch pipe connector is divided into two |
| JP2013035076A (en) * | 2011-08-03 | 2013-02-21 | Cosmo Koki Co Ltd | Fluid pipe cutting method |
| KR20150000765U (en) * | 2013-08-14 | 2015-02-25 | 대우조선해양 주식회사 | Reinforcing Apparatus for Branch pipe |
| CN103586619A (en) * | 2013-11-08 | 2014-02-19 | 上海锅炉厂有限公司 | Large-caliber pipe connector assembly device |
| CN108869923A (en) * | 2018-06-15 | 2018-11-23 | 江苏英杰铝业有限公司 | The end pipe bonding agency of aluminum profile water-cooled radiator |
| CN108869923B (en) * | 2018-06-15 | 2023-09-15 | 江苏英杰铝业有限公司 | End pipe bonding mechanism of aluminum profile water-cooling radiator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2756952B2 (en) | 1998-05-25 |
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