JP3721218B2 - Hydrant fitting - Google Patents

Hydrant fitting Download PDF

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Publication number
JP3721218B2
JP3721218B2 JP26255195A JP26255195A JP3721218B2 JP 3721218 B2 JP3721218 B2 JP 3721218B2 JP 26255195 A JP26255195 A JP 26255195A JP 26255195 A JP26255195 A JP 26255195A JP 3721218 B2 JP3721218 B2 JP 3721218B2
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Japan
Prior art keywords
sleeve
hole
pipe
joint
outer peripheral
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JPH0979442A (en
Inventor
博義 大畑
潤 福山
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Higashio Mech Co Ltd
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Higashio Mech Co Ltd
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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Domestic Plumbing Installations (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、金属製の給水栓とプラスチック配管とを接続する給水栓継手に関する。
【０００２】
【従来の技術】
従来、例えば図８に示すように、ポリ塩化ビニル（以下塩ビと呼ぶ）配管40と、金属製の給水栓30とを接続する継手として、金属製のエルボ型管継手42と塩ビ製の管継手41とを併用していた。材質が同じ塩ビである配管40と管継手41とは、各々接合する部分（配管40上端の外周面32と管継手41の内面39）に接着剤を塗布し、管継手41を配管40に差し込み、塩ビの膨潤と弾性を利用した接着剤塗布圧入工法により接続される。即ち、接着剤を塗布した配管40と管継手41の、各々の塗布面には、微小な厚さ（約0.1mm ）の溶解膨潤層ができるので、ある程度は無理なく挿入できる。しかし、管継手41の挿入孔47はテーパー状であるため、さらに力を加えて塩ビ管を弾性変形させることによって差し込んで接続し、その後の接着剤の硬化により、確実に接続する。次に、管継手41の雄ネジ43ａに（水漏れ防止用の）シールテープを巻きつけ、管継手41を管継手42のネジ孔44ａに螺合し、そして、給水栓30の雄ネジ43ｂにシールテープを巻きつけて、給水栓30を管継手42のネジ孔44ｂに螺合することによって接続が完了する。
【０００３】
【発明が解決しようとする課題】
しかしながら、塩ビ製の管継手41と金属製の管継手42とは材質が異り、各々の強度や熱膨張率が異なるため、長期間使用すると、管継手41の雄ネジ43ａが折損し、管継手42との間で水漏れを起こしていた。また、施工時、配管40と躯体50との隙間寸法Ｍが小さいと背後の躯体50が邪魔となって、（仮想線で示す如く）管継手42を回転させて取付けることができない場合がある。さらに、図示省略するが、管継手41，42を１本の塩ビ製のエルボ型管継手とすることもあるが、（後に給水栓30側に設けられた）仕上げ用壁板50ａから突出させると、塩ビ製であるため強度も弱く、長期間使用すると（給水栓30との接続部分が）折損して水漏れを生じたり、また、継手が安っぽく見えて不都合であった。
【０００４】
そこで、本発明は、塩ビ配管等のプラスチック配管に金属製の給水栓（蛇口）を確実に接続できると共に、コンパクトとなって部品点数が減少し、取付けが容易となる給水栓継手を提供することを目的とする。
【０００５】
【課題を解決するための手段】
上述の目的を達成するために本発明に係る給水栓継手は、給水栓とプラスチック配管とを接続する継手に於て、該給水栓の雄ネジが螺合するネジ孔を一端に有し、開口端側の雌ネジ部と、内部側の円形孔部と、から成るスリーブ用孔を他端に有する金属製継手本体と；該スリーブ用孔に挿入されて上記円形孔部に対応する円形外周面と、上記雌ネジ部に螺合される雄ネジとを有し、かつ、内部にプラスチック配管を挿入するテーパー孔を有する円筒状のプラスチック製スリーブと；上記金属製継手本体のスリーブ用孔の奥面と、上記スリーブの端縁との間に介装されるシール材と；を備え、上記スリーブ用孔の円形孔部の内面と、上記スリーブの円形外周面との間に、上記プラスチック配管の上記テーパー孔への挿入により、該スリーブのうち該円形外周面が形成される周壁部分の拡径変形を許容する微小間隙を形成し、さらに、上記微小間隙の微小間隙寸法Ｗを、 0.15mm ≦Ｗ≦ 0.5mm に設定したものである。
【０００６】
【発明の実施の形態】
以下、実施の形態を示す図面に基づき本発明を詳説する。
【０００７】
図１及び図２は、本発明に係る給水栓継手の実施の一形態を示す分解断面図及び組立状態の断面図であり、この給水栓継手は、給水栓と（塩ビ等の）プラスチック配管との接続に使用するものであり、エルボ型の金属製継手本体１と、円筒状のプラスチック製スリーブ２と、ゴム等を素材とするＯリング型のシール材３と、を備えている。
【０００８】
継手本体１は、可鍛鋳鉄、鋼、鋳鉄、銅合金等の金属製で、一端（給水栓30取付け側）に蛇口等の給水栓30の雄ネジ43ｂが螺合するネジ孔５を有し、他端には、スリーブ２を挿入するスリーブ用孔６を有している。スリーブ用孔６は、開口端20側が雌ネジ部６ａで、内部21側が円形孔部６ｂとなっている。
【０００９】
スリーブ２は、塩ビ等のプラスチック製で、継手本体１のスリーブ用孔６に対応した形状で、かつ、僅かに小さな寸法で成形されている。つまり、スリーブ２はその外周に、スリーブ用孔６の円形孔部６ｂに対応して嵌合される円形外周面７を有すると共に、雌ネジ部６ａに螺合される雄ネジ８を有し、かつ、内部には、プラスチック配管31を挿入するテーパー孔９を有している。テーパー孔９は、継手本体１内部21側の端縁10に、周方向に沿って段付部11を有している。
【００１０】
そして、継手本体１のスリーブ用孔６に、スリーブ２を挿入し螺合することによって、シール材３は、スリーブ用孔６円形孔部６ｂの奥面12とスリーブ２段付部11との間に介装される。このとき、シール材３の厚さ寸法をＴ1 とし、スリーブ２の段付部11から端縁10までの高さ寸法をＴ2 とすると、Ｔ1 ＞Ｔ2 に設定されているため、シール材３は、スリーブ２に押圧されて円形孔部６ｂの奥面12に完全に密着している。
【００１１】
さらに、スリーブ用孔６の円形孔部６ｂの内面13と、スリーブ２の円形外周面７との間には、スリーブ２の拡径変形───即ち、スリーブ２のテーパー孔９に配管が挿入されたときに、弾性変形によってテーパー孔９の内径及びスリーブ２の外径が拡がる───を許容する微小間隙Ｅが形成されている。つまり、円形外周面７側のスリーブ２の厚さ寸法Ｔ3 と、雄ネジ８側のスリーブ２の厚さ寸法Ｔ4 （ネジ山の厚みを除く）は、Ｔ3 ＜Ｔ4 に設定されている。
【００１２】
しかして、図３は、本発明の給水栓継手にプラスチック配管31を接続する状態を示している。継手のテーパー孔９はスリーブ２の開口端22側から内部21側へ向かってその内径が小さくなっているので、配管31をテーパー孔９に挿入すると、（開口端22からの）挿入寸法ａの位置で、配管31の上端縁14角部14ａがスリーブ２の内面15に突き当たり、それ以上の挿入が困難となる。即ち、この位置Ａに於けるテーパー孔９の内径は、配管31の外径Ｄと等しいことを意味する。なお、この挿入寸法ａは、配管31の最終的な挿入寸法をＬ（テーパー孔９の深さ寸法に等しい）とすると、約１／３Ｌに設定されている。
【００１３】
従って、（上述の説明による）接着剤塗布圧入工法によっての接続を行うため、スリーブ２の内面15全面と、配管31の上端縁14から挿入寸法Ｌまでの外周面32前面とに、夫々接着剤を均一に適量塗布し、配管31を継手のテーパー孔９に挿入する。すると、図４に示す如く、配管31を挿入寸法ｂまで難無く挿入することができる。なお、この挿入寸法ｂは、挿入寸法Ｌに対し、約２／３Ｌに設定されている。
【００１４】
そして、さらに力を加えて、図５に示す如く、配管31をテーパー孔９の奥面16まで挿入する。このとき、塩ビの弾性によって、配管31は範囲26（微小間隙Ｅに対応する位置）に於て、僅かにしぼられる（外径が小さくなる）。と同時に、スリーブ２内面15は僅かに押し広げられ（内径が大きくなり）、これに伴い、スリーブ２の外径も僅かに大きくなるが、継手本体１との微小間隙Ｅによってスリーブ２の拡径変形が許容されるため、その変形が妨げられることはない。その後、接着剤が硬化して、配管31外周面32とスリーブ２のテーパー孔９内面15とは確実に密着し、強固に接続される。
【００１５】
この微小間隙Ｅは、その微小間隙寸法をＷとすると、0.15mm≦Ｗ≦0.5mm に設定されている。つまり、スリーブ２の拡径変形───外径の変化───が、0.3mm 〜1.0mm 内で起こるので、それに対応した寸法・形状に予め、スリーブ２および継手本体１のスリーブ用孔６が形成されている。なお、間隙寸法Ｗが0.15mmより小さいと、拡径変形の際、スリーブ２の円形外周面７が継手本体１の円形孔部６ｂにつかえてしまうため、配管31の挿入が困難である。また、0.5mm よりも大きいと、配管31挿入後、間隙Ｅに余裕がありすぎて継手と配管31とがぐらついたり、それによっての水漏れの原因となる。なお、（一層の密封性向上のため）雌ネジ部６ａと雄ネジ８の間に（ロック用の）接着剤を介在させる場合もある。
【００１６】
図６は、本発明に係る給水栓継手の実施の他の形態を示している。同図（イ）は、座付エルボ型の継手であって、取付ネジ用の貫孔34を有する帯板状の座部33が、継手本体１の弯曲部35に設けられている。同図（ロ）は、ソケット型の継手であり、継手本体１の端部は雄ネジ36となっていると共に、中央付近には６角のナット部37が設けられている。そして、同図（ハ）は、倒立Ｔ字型の継手本体１に、プラスチック配管を接続するスリーブ２，２を二股状に２箇所設けたものである。これらの継手は、使用する施工現場の種々の条件（配管の数や向き及び給水栓の種類等）に対応できるよう、その形状等を考慮してつくられる。
【００１７】
しかして、図７は、施工時に於る本発明の給水栓継手の使用状態を示している。エルボ型の継手は、全体としてコンパクトであるため、（立上げて設けられた）配管31に接続する際、配管31と背後の躯体50の隙間寸法Ｍが小さく、近接していても（仮想線で示す如く）難無く回転させて取付けることができる。また、部品点数の減少により、接続工事が容易であり、かつ、効率良く行い得る。従って、躯体50から比較的近い位置に仕上げ用壁板50ａを取付けることができる。
【００１８】
また、従来、図８に於て、予め金属製管継手42と塩ビ管継手41とを雄ネジ43ａの螺合にて一体化して後、（現場では）接着剤を塩ビ管継手41の内面39に塗布して、塩ビ配管40の上端に外嵌し、接続（配管作業）を行う場合もあった。しかし、接着剤は比較的早く固化するため、ネジ孔44ｂ（給水栓30取付孔）の向きがずれている場合に、その修正が出来なくなる。その時、金属製管継手42と塩ビ管継手41の螺合部にて少し回転させて金属製管継手42のネジ孔44ｂの向きを修正する場合があったため、雄ネジ43ａ（螺合部）が緩んで外部漏洩を生ずる虞があった。これに対し、本発明に係る給水栓継手では、シール材３を有するため、（そのような特別な作業が行われたとしても）外部漏洩を防ぎ得る。即ち、図７に於て、予め、継手本体１とスリーブ２とを螺合一体化してから、接着剤を介してプラスチック配管31と接続する作業に於て、継手本体１のネジ孔５の向きを少し修正したい場合に、上記接着剤が固化してしまっているときには継手本体１をスリーブ２に対してその螺合部にて少し回転させても、シール材３があることによって、外部漏洩が生じないという利点がある。
【００１９】
【発明の効果】
本発明は上述の如く構成されるので、次に記載する効果を奏する。
【００２０】
継手本体１とスリーブ２とが一体化することによって、金属製の給水栓30と、プラスチック配管31との接続が確実に行い得る。また、全体がコンパクトであり、部品点数が減少することによって、背後に躯体50が近接した現場でも、配管31との接続が容易に、かつ、効率良く行い得る。さらに、仕上げ用壁板50ａから突出して外部に露出する外観が金属製であるため、強度・耐久性が大きく、かつ、見栄えが良い。
また、予め、継手本体１とスリーブ２とを螺合一体化してから、接着剤を介してプラスチック配管31と接続する作業に於て、継手本体１のネジ孔５の向きを少し修正したい場合に、上記接着剤が固化してしまっているときには継手本体１をスリーブ２に対してその螺合部にて少し回転させて、修正できる。
【００２１】
また、接着剤塗布圧入工法によるプラスチック配管31との接続を、容易に、かつ、確実に行い得る。また、熱膨張等によるスリーブ２の折損を生ぜず、長期間使用しても配管31とスリーブ２の間からの水漏れを起こさない。
【図面の簡単な説明】
【図１】 本発明の給水栓継手の実施の一形態を示す分解断面図である。
【図２】 組立状態の断面図である。
【図３】 テーパー孔に配管を挿入する状態を示す第１の要部断面図である。
【図４】 テーパー孔に配管を挿入する状態を示す第２の要部断面図である。
【図５】 テーパー孔に配管を挿入する状態を示す第３の要部断面図である。
【図６】 本発明の給水栓継手の実施の他の形態を示す断面図である。
【図７】 施工時の使用状態を示す説明図である。
【図８】 施工時の従来の使用状態を示す説明図である。
【符号の説明】
１ 継手本体
２ スリーブ
３ シール材
５ ネジ孔
６ スリーブ用孔
６ａ 雌ネジ部
６ｂ 円形孔部
７ 円形外周面
８ 雄ネジ
９ テーパー孔
13 内面
20 開口端
21 内部
30 給水栓
31 プラスチック配管
43ｂ 雄ネジ
Ｅ 微小間隙
Ｗ 微小間隙寸法[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water faucet joint that connects a metal water faucet and a plastic pipe.
[0002]
[Prior art]
Conventionally, as shown in FIG. 8, for example, a metal elbow-type pipe joint 42 and a PVC pipe joint are used as a joint for connecting a polyvinyl chloride (hereinafter referred to as PVC) pipe 40 and a metal faucet 30. 41 was used together. Pipe 40 and pipe joint 41, which are made of the same PVC material, apply adhesive to the joints (the outer peripheral surface 32 at the upper end of the pipe 40 and the inner surface 39 of the pipe joint 41), and insert the pipe joint 41 into the pipe 40. They are connected by an adhesive application press-in method using the swelling and elasticity of PVC. That is, since the melted and swollen layer having a very small thickness (about 0.1 mm) is formed on each of the coated surfaces of the pipe 40 and the pipe joint 41 to which the adhesive is applied, it can be inserted without difficulty to some extent. However, since the insertion hole 47 of the pipe joint 41 is tapered, it is inserted and connected by applying a further force to elastically deform the PVC pipe, and then securely connected by curing of the adhesive. Next, a seal tape (for preventing water leakage) is wound around the male thread 43a of the pipe joint 41, the pipe joint 41 is screwed into the screw hole 44a of the pipe joint 42, and then the male thread 43b of the water tap 30 is engaged. The connection is completed by winding the seal tape and screwing the water tap 30 into the screw hole 44b of the pipe joint 42.
[0003]
[Problems to be solved by the invention]
However, since the PVC pipe joint 41 and the metal pipe joint 42 are made of different materials and have different strengths and thermal expansion coefficients, the male thread 43a of the pipe joint 41 breaks down when used for a long period of time. Water leakage occurred between the joint 42. Further, at the time of construction, if the gap size M between the pipe 40 and the casing 50 is small, the rear casing 50 may become an obstacle, and the pipe joint 42 may not be rotated and attached (as indicated by a virtual line). Further, although not shown in the drawings, the pipe joints 41 and 42 may be a single elbow pipe joint made of vinyl chloride, but when projected from the finishing wall plate 50a (provided on the faucet 30 side later), Since it is made of polyvinyl chloride, its strength is weak, and when it is used for a long period of time (the connecting part with the water tap 30) breaks, water leakage occurs, and the joint looks cheap, which is inconvenient.
[0004]
Accordingly, the present invention provides a water faucet joint that can securely connect a metal water faucet (faucet) to a plastic pipe such as a vinyl chloride pipe, is compact, reduces the number of parts, and is easy to install. With the goal.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, a water tap joint according to the present invention has a screw hole into which a male screw of the water tap is screwed at one end of the joint connecting the water tap and the plastic pipe. A metal joint main body having a sleeve hole at the other end formed of an internal thread portion on the end side and a circular hole portion on the inner side; a circular outer peripheral surface inserted into the sleeve hole and corresponding to the circular hole portion A cylindrical plastic sleeve having a male screw threadedly engaged with the female screw portion and having a tapered hole into which a plastic pipe is inserted; and a depth of the sleeve hole of the metal joint body And a sealing material interposed between the edge of the sleeve and the inner surface of the circular hole portion of the sleeve hole and the circular outer peripheral surface of the sleeve. By inserting into the tapered hole, the sleeve The minute gap to allow expanded deformation of the peripheral wall portion circular outer peripheral surface is formed to form, further, a minute gap dimension W of the minute gap is obtained by setting the 0.15 mm ≦ W ≦ 0.5 mm.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
[0007]
1 and 2 are an exploded sectional view and an assembled sectional view showing an embodiment of a faucet joint according to the present invention. The faucet joint includes a faucet, a plastic pipe (such as PVC), and the like. And includes an elbow-type metal joint body 1, a cylindrical plastic sleeve 2, and an O-ring type sealing material 3 made of rubber or the like.
[0008]
The joint body 1 is made of metal such as malleable cast iron, steel, cast iron, copper alloy, and has a screw hole 5 into which one end (the faucet 30 mounting side) of the faucet or other male screw 43b is screwed. The other end has a sleeve hole 6 into which the sleeve 2 is inserted. The sleeve hole 6 has a female screw portion 6a on the opening end 20 side and a circular hole portion 6b on the inner 21 side.
[0009]
The sleeve 2 is made of plastic such as vinyl chloride, and has a shape corresponding to the sleeve hole 6 of the joint body 1 and is formed with a slightly small size. That is, the sleeve 2 has a circular outer peripheral surface 7 fitted to the outer periphery of the sleeve 2 corresponding to the circular hole portion 6b of the sleeve hole 6 and a male screw 8 screwed into the female screw portion 6a. In addition, a taper hole 9 into which the plastic pipe 31 is inserted is provided inside. The tapered hole 9 has a stepped portion 11 along the circumferential direction at the end edge 10 on the inside 21 side of the joint body 1.
[0010]
Then, by inserting and screwing the sleeve 2 into the sleeve hole 6 of the joint body 1, the sealing material 3 is placed between the inner surface 12 of the sleeve hole 6 circular hole portion 6 b and the sleeve two stepped portion 11. Is intervened. At this time, if the thickness dimension of the sealing material 3 is T 1 and the height dimension from the stepped portion 11 of the sleeve 2 to the end edge 10 is T 2 , T 1 > T 2 is set. The material 3 is pressed against the sleeve 2 and is completely in close contact with the inner surface 12 of the circular hole 6b.
[0011]
Further, between the inner surface 13 of the circular hole 6 b of the sleeve hole 6 and the circular outer peripheral surface 7 of the sleeve 2, the pipe 2 is inserted into the tapered hole 9 of the sleeve 2. In this case, a minute gap E is formed that allows the inner diameter of the tapered hole 9 and the outer diameter of the sleeve 2 to expand due to elastic deformation. That is, the thickness dimension T 3 of the sleeve 2 on the circular outer peripheral surface 7 side and the thickness dimension T 4 (excluding the thread thickness) of the sleeve 2 on the male screw 8 side are set to T 3 <T 4. Yes.
[0012]
FIG. 3 shows a state in which the plastic pipe 31 is connected to the water tap joint of the present invention. Since the inner diameter of the tapered hole 9 of the joint decreases from the opening end 22 side of the sleeve 2 toward the inner side 21, when the pipe 31 is inserted into the tapered hole 9, the insertion dimension a (from the opening end 22) At the position, the upper end edge 14 corner 14a of the pipe 31 hits the inner surface 15 of the sleeve 2, and it becomes difficult to insert further. That is, the inner diameter of the tapered hole 9 at the position A means that the outer diameter D of the pipe 31 is equal. The insertion dimension a is set to about 1/3 L when the final insertion dimension of the pipe 31 is L (equal to the depth dimension of the tapered hole 9).
[0013]
Accordingly, in order to perform the connection by the adhesive application press-fitting method (according to the above description), the adhesive is applied to the entire inner surface 15 of the sleeve 2 and the front surface of the outer peripheral surface 32 from the upper end edge 14 of the pipe 31 to the insertion dimension L. Is applied uniformly, and the pipe 31 is inserted into the tapered hole 9 of the joint. Then, as shown in FIG. 4, the pipe 31 can be inserted without difficulty up to the insertion dimension b. The insertion dimension b is set to about 2/3 L with respect to the insertion dimension L.
[0014]
Further, a force is further applied to insert the pipe 31 up to the inner surface 16 of the tapered hole 9 as shown in FIG. At this time, the piping 31 is slightly squeezed (the outer diameter is reduced) in the range 26 (position corresponding to the minute gap E) due to the elasticity of the vinyl chloride. At the same time, the inner surface 15 of the sleeve 2 is slightly expanded (inner diameter is increased), and the outer diameter of the sleeve 2 is slightly increased accordingly, but the diameter of the sleeve 2 is increased by the minute gap E with the joint body 1. Since the deformation is allowed, the deformation is not hindered. Thereafter, the adhesive is hardened, and the outer peripheral surface 32 of the pipe 31 and the inner surface 15 of the taper hole 9 of the sleeve 2 are securely adhered and firmly connected.
[0015]
The minute gap E is set to 0.15 mm ≦ W ≦ 0.5 mm, where W is the dimension of the minute gap. In other words, the diameter expansion deformation of the sleeve 2 —the change in the outer diameter—occurs within 0.3 mm to 1.0 mm, so the sleeve 2 and the sleeve hole 6 of the joint body 1 are preliminarily dimensioned and shaped accordingly. Is formed. If the gap dimension W is smaller than 0.15 mm, the circular outer peripheral surface 7 of the sleeve 2 is caught by the circular hole 6b of the joint body 1 during the diameter expansion deformation, so that it is difficult to insert the pipe 31. On the other hand, if it is larger than 0.5 mm, the gap E is too large after the pipe 31 is inserted, and the joint and the pipe 31 are loosened, thereby causing water leakage. In some cases, an adhesive (for locking) is interposed between the female screw portion 6a and the male screw 8 (in order to further improve the sealing performance).
[0016]
FIG. 6 shows another embodiment of the faucet joint according to the present invention. FIG. 2A shows a seated elbow-type joint, and a band-shaped seat portion 33 having a through hole 34 for a mounting screw is provided in a bent portion 35 of the joint body 1. FIG. 2B shows a socket-type joint. The end of the joint body 1 is a male screw 36, and a hexagonal nut 37 is provided near the center. FIG. 6C shows an inverted T-shaped joint body 1 in which two sleeves 2 and 2 for connecting plastic pipes are provided in two forks. These joints are made in consideration of the shape and the like so as to be able to cope with various conditions (the number and direction of pipes and the type of hydrant) of the construction site to be used.
[0017]
Thus, FIG. 7 shows a use state of the water tap joint of the present invention at the time of construction. Since the elbow joint is compact as a whole, when it is connected to the pipe 31 (provided by being set up ) , the gap dimension M between the pipe 31 and the rear housing 50 is small, even if they are close to each other (virtual line It can be rotated and installed without difficulty. In addition, since the number of parts is reduced, connection work is easy and efficient. Therefore, the finishing wall plate 50a can be attached at a position relatively close to the housing 50.
[0018]
Conventionally, in FIG. 8, the metal pipe joint 42 and the vinyl chloride pipe joint 41 are integrated in advance by screwing of the male screw 43 a, and then the adhesive is applied (in the field) to the inner surface 39 of the PVC pipe joint 41. In some cases, it was externally fitted to the upper end of the PVC pipe 40 and connected (pipe work). However, since the adhesive hardens relatively quickly, it cannot be corrected when the direction of the screw hole 44b (water faucet 30 mounting hole) is deviated. At that time, since there was a case where the direction of the screw hole 44b of the metal pipe joint 42 is corrected by rotating it slightly at the threaded part of the metal pipe joint 42 and the PVC pipe joint 41, the male screw 43a (screwed part) is There was a risk of loosening and external leakage. On the other hand, since the faucet joint according to the present invention has the sealing material 3, it can prevent external leakage (even if such a special operation is performed). That is, in FIG. 7, the joint body 1 and the sleeve 2 are preliminarily screwed together and then connected to the plastic pipe 31 via an adhesive. When the adhesive is solidified, the external leakage may be caused by the presence of the sealing material 3 even if the joint body 1 is slightly rotated with respect to the sleeve 2 at the threaded portion. There is an advantage that it does not occur.
[0019]
【The invention's effect】
Since this invention is comprised as mentioned above, there exists an effect described below.
[0020]
By integrating the joint body (1) and the sleeve 2 are, the faucet 30 of the metallic, can reliably perform connection between the plastic pipe 31. Further, since the whole is compact and the number of parts is reduced, connection to the pipe 31 can be easily and efficiently performed even at a site where the housing 50 is close to the back. Furthermore, since the appearance that protrudes from the finishing wall plate 50a and is exposed to the outside is made of metal, the strength and durability are high and the appearance is good.
In addition, when the joint body 1 and the sleeve 2 are screwed and integrated in advance and then connected to the plastic pipe 31 via an adhesive, the direction of the screw hole 5 of the joint body 1 is to be slightly corrected. When the adhesive is solidified, the joint body 1 can be corrected by slightly rotating the joint body 1 with respect to the sleeve 2 at its threaded portion.
[0021]
Further, the connection with the plastic pipe 31 by the adhesive application press-fitting method can be easily and reliably performed. Further, the sleeve 2 does not break due to thermal expansion or the like, and water leakage from between the pipe 31 and the sleeve 2 does not occur even when used for a long time.
[Brief description of the drawings]
FIG. 1 is an exploded cross-sectional view showing an embodiment of a water faucet joint of the present invention.
FIG. 2 is a cross-sectional view in an assembled state.
FIG. 3 is a first cross-sectional view of a main part showing a state where a pipe is inserted into a tapered hole.
FIG. 4 is a second cross-sectional view showing a main part of a state where a pipe is inserted into a tapered hole.
FIG. 5 is a third cross-sectional view showing a main part of a state where a pipe is inserted into a tapered hole.
FIG. 6 is a cross-sectional view showing another embodiment of the faucet joint of the present invention.
FIG. 7 is an explanatory view showing a use state at the time of construction.
FIG. 8 is an explanatory view showing a conventional use state at the time of construction.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Joint body 2 Sleeve 3 Sealing material 5 Screw hole 6 Sleeve hole 6a Female screw part 6b Circular hole part 7 Circular outer peripheral surface 8 Male screw 9 Tapered hole
13 Inside
20 Open end
21 Inside
30 Water tap
31 Plastic piping
43b Male thread E Minute gap W Minute gap dimension

Claims (1)

給水栓30とプラスチック配管31とを接続する継手に於て、該給水栓30の雄ネジ43ｂが螺合するネジ孔５を一端に有し、開口端20側の雌ネジ部６ａと、内部21側の円形孔部６ｂと、から成るスリーブ用孔６を他端に有する金属製継手本体１と；該スリーブ用孔６に挿入されて上記円形孔部６ｂに対応する円形外周面７と、上記雌ネジ部６ａに螺合される雄ネジ８とを有し、かつ、内部にプラスチック配管31を挿入するテーパー孔９を有する円筒状のプラスチック製スリーブ２と；上記金属製継手本体１のスリーブ用孔６の奥面12と、上記スリーブ２の端縁10との間に介装されるシール材３と；を備え、上記スリーブ用孔６の円形孔部６ｂの内面13と、上記スリーブ２の円形外周面７との間に、上記プラスチック配管31の上記テーパー孔９への挿入により、該スリーブ２のうち該円形外周面７が形成される周壁部分の拡径変形を許容する微小間隙Ｅを形成し、
さらに、上記微小間隙Ｅの微小間隙寸法Ｗを、 0.15mm ≦Ｗ≦ 0.5mm に設定したことを特徴とする給水栓継手。The joint connecting the water tap 30 and the plastic pipe 31 has a screw hole 5 into which the male screw 43b of the water tap 30 is screwed. A metal joint body 1 having a sleeve hole 6 formed at the other end; a circular outer peripheral surface 7 inserted into the sleeve hole 6 and corresponding to the circular hole 6b; A cylindrical plastic sleeve 2 having a male screw 8 screwed into the female screw portion 6a and having a tapered hole 9 into which a plastic pipe 31 is inserted; and for the sleeve of the metal joint body 1 A sealing material 3 interposed between the inner surface 12 of the hole 6 and the edge 10 of the sleeve 2, the inner surface 13 of the circular hole 6 b of the sleeve hole 6, and the sleeve 2. By inserting the plastic pipe 31 into the tapered hole 9 between the circular outer peripheral surface 7 and , Forming a minute gap E that allows diameter expansion deformation of the peripheral wall portion of the sleeve 2 where the circular outer peripheral surface 7 is formed ,
Furthermore, the faucet joint characterized in that the minute gap dimension W of the minute gap E is set to 0.15 mm ≦ W ≦ 0.5 mm .
JP26255195A 1995-09-13 1995-09-13 Hydrant fitting Expired - Lifetime JP3721218B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26255195A JP3721218B2 (en) 1995-09-13 1995-09-13 Hydrant fitting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26255195A JP3721218B2 (en) 1995-09-13 1995-09-13 Hydrant fitting

Publications (2)

Publication Number Publication Date
JPH0979442A JPH0979442A (en) 1997-03-25
JP3721218B2 true JP3721218B2 (en) 2005-11-30

Family

ID=17377385

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26255195A Expired - Lifetime JP3721218B2 (en) 1995-09-13 1995-09-13 Hydrant fitting

Country Status (1)

Country Link
JP (1) JP3721218B2 (en)

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WO2009130776A1 (en) * 2008-04-24 2009-10-29 木村 洋一 Small-size precision bent tube joint and assembly for reducing sum total of specific environmetal load, process for producing the small-size precision bent tube joint and assembly, and mold and working machine for execution of the process
JP2012112411A (en) * 2010-11-22 2012-06-14 Togawa Rubber Co Ltd Joint member, resin pipe and pipe connecting structure
DE102014101484A1 (en) * 2014-02-06 2015-08-06 Marco Systemanalyse Und Entwicklung Gmbh connection system
JP2016050589A (en) * 2014-08-28 2016-04-11 ブリヂストンフローテック株式会社 Socket, and connection structure using the same
KR102536793B1 (en) * 2022-08-24 2023-05-26 김재옥 Drain trap assembly

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101625368B1 (en) * 2014-09-15 2016-05-31 주식회사 파이텍 Water supply distributor box assembly with mounting compatability function

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