JP4832866B2 - Piping joint and piping connection structure - Google Patents

Piping joint and piping connection structure Download PDF

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JP4832866B2
JP4832866B2 JP2005338469A JP2005338469A JP4832866B2 JP 4832866 B2 JP4832866 B2 JP 4832866B2 JP 2005338469 A JP2005338469 A JP 2005338469A JP 2005338469 A JP2005338469 A JP 2005338469A JP 4832866 B2 JP4832866 B2 JP 4832866B2
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pipe
diameter
joint
relay
hole
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昌之 渡辺
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DKK TOA Corp
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Description

本発明は、分析装置、実験装置、製造装置などに備えられる配管継手および配管の接続構造に関する。   The present invention relates to a pipe joint and pipe connection structure provided in an analysis apparatus, an experimental apparatus, a manufacturing apparatus, and the like.

ガスなどの流体が流動する配管を備えた装置（例えば、分析装置、実験装置、製造装置など）では、同じ外径の配管同士あるいは互いに異なる外径の配管同士を接続することがある。配管同士を接続する際には、一般的には、配管継手が使用される。
従来の配管継手としては、例えば、両端に雄ネジが設けられ、該雄ネジ先端から内部にかけて形成された配管挿入孔と、両端の配管挿入孔同士を連通するように形成された貫通孔とを有するものが挙げられる（例えば、特許文献１，２参照）。このような配管継手を用いた配管の接続では、前記配管継手の雄ネジに螺合され、底部が配管貫通用に開口した袋ナットと、配管が挿通される配管挿通用孔が形成され、配管継手の配管挿入孔内に挿入されるフェルールとを用いる。具体的には、配管に袋ナット、フェルールを順次通した後、配管先端を配管継手の配管挿入孔に挿入し、袋ナットを配管継手の雄ネジに螺合する。袋ナットを配管継手の雄ネジに螺合すると、フェルールが配管継手の配管挿入孔に密着しつつ配管に固定されるため、気密性を確保しつつ配管を配管継手に固定することができる。このように２本の配管を配管継手に固定して、配管同士を接続することが行われていた。
実開昭６２−５２３９１号公報 特開平４−３９４９１号公報 In an apparatus (for example, an analysis apparatus, an experimental apparatus, a manufacturing apparatus, or the like) provided with a pipe through which a fluid such as gas flows, pipes having the same outer diameter or pipes having different outer diameters may be connected. When connecting pipes, a pipe joint is generally used.
As a conventional pipe joint, for example, a male screw is provided at both ends, a pipe insertion hole formed from the tip of the male screw to the inside, and a through hole formed to communicate the pipe insertion holes at both ends. (For example, refer to Patent Documents 1 and 2). In pipe connection using such a pipe joint, a cap nut screwed into the male thread of the pipe joint and having a bottom portion opened for pipe penetration and a pipe insertion hole through which the pipe is inserted are formed. A ferrule inserted into the pipe insertion hole of the joint is used. Specifically, after sequentially passing a cap nut and ferrule through the pipe, the tip of the pipe is inserted into the pipe insertion hole of the pipe joint, and the cap nut is screwed into the male thread of the pipe joint. When the cap nut is screwed onto the male thread of the pipe joint, the ferrule is fixed to the pipe while being in close contact with the pipe insertion hole of the pipe joint, so that the pipe can be fixed to the pipe joint while ensuring airtightness. In this way, two pipes are fixed to a pipe joint and the pipes are connected to each other.
Japanese Utility Model Publication No. 62-52391 JP-A-4-39491

しかしながら、従来の配管継手では、高い気密性を確保できる反面、配管を固定する際にねじ込みを必要とするため、配管接続作業が簡便ではなかった。また、従来の配管継手は構造が複雑であるため、高価であり、この配管継手を備えた場合には、装置のコストが高くなっていた。特に、高い気密性を必要としない装置に前記配管継手を用いると費用の面で無駄が多くなった。
本発明は、前記事情を鑑みてなされたものであり、２本の配管を簡便に接続することができ、しかも安価である配管継手および配管の接続構造を提供することを目的とする。 However, in the conventional pipe joint, high airtightness can be ensured, but on the other hand, screwing is required when fixing the pipe, so that the pipe connection work is not simple. Moreover, since the conventional pipe joint has a complicated structure, it is expensive. When this pipe joint is provided, the cost of the apparatus is high. In particular, when the pipe joint is used in an apparatus that does not require high airtightness, waste is increased in terms of cost.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a pipe joint and a pipe connection structure that can easily connect two pipes and are inexpensive.

本発明は、以下の構成を含むものである。
（１） 外径が異なる２本の配管同士を接続する配管継手において、
弾性高分子材料製の継手本体と、中継用管とを具備し、
継手本体が、外径が大きい方の配管である大径配管が挿入される大径配管挿入孔と、外径が小さい方の配管である小径配管が挿入される小径配管挿入孔と、大径配管挿入孔の終端と小径配管挿入孔の終端とを連通し、大径配管の内径と略同等の口径を有する貫通孔とが形成されたものであり、
中継用管は、外径全体が前記継手本体の貫通孔の口径および前記大径配管の内径と略同等であり、内径全体が前記小径配管の外径と略同等であり、前記継手本体の貫通孔内から前記大径配管挿入孔内の終端側までの範囲に配設され、
小径配管を中継用管の一端に挿入し、中継用管の他端を大径配管に挿入するように構成されたものであることを特徴とする配管継手。
（２） 同じ外径の２本の配管同士を接続する配管継手において、
弾性高分子材料製の継手本体と、中継用管とを具備し、
継手本体が、各配管が挿入される２つの配管挿入孔と、各配管挿入孔の終端同士を連通し、前記配管の内径と略同等の口径を有する貫通孔とが形成されたものであり、
中継用管は、外径全体が前記継手本体の貫通孔の口径および前記配管の内径と略同等であり、前記継手本体の貫通孔内から各配管挿入孔内の終端側までの範囲に配設され、
中継用管の一端を一方の配管に挿入し、中継用管の他端を他方の配管に挿入するように構成されたものであることを特徴とする配管継手。
（３） 同じ外径の２本の配管同士を接続する配管継手において、
弾性高分子材料製の継手本体と、中継用管とを具備し、
継手本体が、各配管が挿入される２つの配管挿入孔と、各配管挿入孔の終端同士を連通し、前記配管の外径より大きい口径を有する貫通孔とが形成されたものであり、
中継用管は、外径全体が前記継手本体の貫通孔の口径と略同等であり、かつ、内径全体が前記配管の外径と略同等であり、前記継手本体の貫通孔内に配設され、
一方の配管を中継用管の一端に挿入し、他方の配管を中継用管の他端に挿入するように構成されたものであることを特徴とする配管継手。
（４） 中継用管がフッ素樹脂製である（１）〜（３）のいずれか一項に記載の配管継手。
（５） 継手本体がシリコーンゴム製である（１）〜（４）のいずれか一項に記載の配管継手。
（６） （１）〜（５）のいずれかに記載の配管継手によって２本の配管同士が接続されたことを特徴とする配管の接続構造。 The present invention includes the following configurations.
(1) In a pipe joint that connects two pipes with different outer diameters,
It comprises a joint body made of an elastic polymer material and a relay pipe,
The joint body has a large-diameter pipe insertion hole into which a large-diameter pipe that has a larger outer diameter is inserted, a small-diameter pipe insertion hole into which a small-diameter pipe that has a smaller outer diameter is inserted, and a large-diameter pipe. The end of the pipe insertion hole and the end of the small diameter pipe insertion hole communicate with each other, and a through hole having a diameter substantially equal to the inner diameter of the large diameter pipe is formed.
The relay pipe has an entire outer diameter substantially equal to the diameter of the through hole of the joint body and the inner diameter of the large diameter pipe , and the entire inner diameter is substantially equal to the outer diameter of the small diameter pipe. Arranged in the range from the hole to the end side in the large-diameter pipe insertion hole ,
A pipe joint characterized in that a small-diameter pipe is inserted into one end of a relay pipe and the other end of the relay pipe is inserted into a large-diameter pipe .
(2) In a pipe joint that connects two pipes with the same outer diameter,
It comprises a joint body made of an elastic polymer material and a relay pipe,
The joint body is formed with two pipe insertion holes into which the respective pipes are inserted, and through holes having a diameter substantially equal to the inner diameter of the pipes, communicating with the terminal ends of the respective pipe insertion holes.
Relay tube outer径全body is substantially equal to the diameter and the inner diameter of the pipe of the through hole of the joint body, arranged from the through hole of the joint body to a range to the end side in each pipe insertion hole It is,
A pipe joint characterized in that one end of a relay pipe is inserted into one pipe and the other end of the relay pipe is inserted into the other pipe.
(3) In a pipe joint that connects two pipes with the same outer diameter,
It comprises a joint body made of an elastic polymer material and a relay pipe,
The joint body is formed with two pipe insertion holes into which the pipes are inserted, and through holes having a diameter larger than the outer diameter of the pipes, communicating the terminal ends of the pipe insertion holes.
Relay tube outer径全body is equal to approximately the diameter of the through hole of the joint body, and the entire inner diameter is substantially equal to the outer diameter of the pipe, is disposed in the through hole of the joint body ,
A pipe joint characterized in that one pipe is inserted into one end of a relay pipe and the other pipe is inserted into the other end of the relay pipe.
(4) The pipe joint according to any one of (1) to (3), wherein the relay pipe is made of a fluororesin.
(5) The pipe joint according to any one of (1) to (4), wherein the joint body is made of silicone rubber.
(6) A pipe connection structure, wherein two pipes are connected by the pipe joint according to any one of (1) to (5) .

本発明の配管継手または配管の接続構造は、２本の配管を簡便に接続することができ、しかも安価である。   The pipe joint or pipe connection structure of the present invention can easily connect two pipes and is inexpensive.

（第１の実施形態）
本発明の配管継手および配管の接続構造の第１の実施形態について説明する。
図１に、本実施形態の配管継手を示す。本実施形態の配管継手１は、互いに異なる外径の２本の配管（以下、外径が大きい方の配管を大径配管といい、外径が小さい方の配管を小径配管という。）を接続するものであって、弾性高分子材料製で円筒状の継手本体１０ａと、中継用管２０ａとを具備するものである。なお、配管は、内部にガスまたは液体からなる流体を流動させるものである。 (First embodiment)
A first embodiment of a pipe joint and pipe connection structure of the present invention will be described.
FIG. 1 shows a pipe joint of the present embodiment. The pipe joint 1 of the present embodiment connects two pipes having different outer diameters (hereinafter, a pipe having a larger outer diameter is referred to as a large diameter pipe, and a pipe having a smaller outer diameter is referred to as a small diameter pipe). And a cylindrical joint body 10a made of an elastic polymer material and a relay pipe 20a. In addition, piping is made to flow the fluid which consists of gas or a liquid inside.

継手本体１０ａは、大径配管Ｔ１が挿入される大径配管挿入孔１１と、小径配管Ｔ２が挿入される小径配管挿入孔１２と、大径配管挿入孔１１の終端と小径配管挿入孔１２の終端とを連通する貫通孔１３とが形成されたものである。
本実施形態における継手本体１０ａでは、大径配管挿入孔１１の口径が、大径配管Ｔ１の外径と略同等であり、小径配管挿入孔１２の口径が、小径配管Ｔ２の外径と略同等であり、貫通孔１３の口径が、大径配管Ｔ１の内径と略同等である（図２参照）。 Joint body 10a is provided with a large diameter pipe insertion hole 11 with large diameter pipe T 1 is inserted, a small diameter pipe insertion hole 12 diameter pipe T 2 is inserted, the large-diameter pipe insertion hole 11 terminating with a small-diameter pipe insertion hole A through hole 13 communicating with the end of 12 is formed.
In joint body 10a in the present embodiment, the diameter of the large diameter pipe insertion hole 11 is substantially equal to the outer diameter of the large diameter pipe T 1, the diameter of the small diameter pipe insertion hole 12, the outer diameter of the small diameter pipe T 2 is substantially equal to, the diameter of the through-hole 13 is substantially equal to the inner diameter of the large diameter pipe T 1 (see FIG. 2).

また、本実施形態における継手本体１０ａは、弾性高分子材料を成形した２つの部材からなるものである。すなわち、大径配管挿入孔１１および継手本体１０ａの貫通孔１３の一部を構成する孔１４ａが形成された大径配管挿入用部材Ａ（図３参照）と、小径配管挿入孔１２および継手本体１０ａの貫通孔１３の一部を構成する孔１４ｂが形成された小径配管挿入用部材Ｂ（図４参照）とが一体化されたものである。   Moreover, the joint main body 10a in this embodiment consists of two members which shape | molded the elastic polymer material. That is, the large-diameter pipe insertion member 11 (see FIG. 3) in which the large-diameter pipe insertion hole 11 and the hole 14a constituting a part of the through hole 13 of the joint main body 10a are formed, the small-diameter pipe insertion hole 12 and the joint main body. The small-diameter pipe insertion member B (see FIG. 4) in which a hole 14b constituting a part of the through hole 13 of 10a is formed is integrated.

継手本体１０ａを構成する弾性高分子材料としては、例えば、シリコーンゴム、フッ素ゴム、エチレン−プロピレン共重合体などのポリオレフィン系エラストマーなどが挙げられる。これらの中でも、半透明であり、大径配管Ｔ１および小径配管Ｔ２の挿入状態を視認できることから、シリコーンゴムが好ましい。
なお、本実施形態では、中継用管２０ａを有しており、継手本体１０ａに流体が接することがないため、耐ガス性または耐液性や弾性高分子材料中の不純物等を考慮する必要がない。 Examples of the elastic polymer material constituting the joint body 10a include polyolefin-based elastomers such as silicone rubber, fluoro rubber, and ethylene-propylene copolymer. Among these, translucent, because it can be visually recognized insertion state of the large diameter pipe T 1 and a small-diameter pipe T 2, silicone rubber is preferred.
In this embodiment, since the relay pipe 20a is provided and no fluid contacts the joint body 10a, it is necessary to consider gas resistance or liquid resistance, impurities in the elastic polymer material, and the like. Absent.

中継用管２０ａは、継手本体１０ａの貫通孔１３の口径および大径配管Ｔ１の内径と略同等の外径を有し、かつ、小径配管Ｔ２の外径と略同等の内径を有するものである（図５参照）。また、中継用管２０ａは、継手本体１０ａの貫通孔１３内から大径配管挿入孔１１内の終端側までの範囲に配設されている。 Relay pipe 20a has an outer diameter bore and a large diameter pipe T 1 inside diameter substantially equal to the through-hole 13 of the joint body 10a, and having an outer diameter substantially equal to the inner diameter of the small-diameter pipe T 2 (See FIG. 5). Further, the relay pipe 20a is disposed in a range from the inside of the through hole 13 of the joint body 10a to the end side in the large diameter pipe insertion hole 11.

中継用管２０ａの材質としては特に制限されないが、簡単な加工によって得られることから、樹脂であることが好ましい。さらに、中継用管２０ａ内にも流体が流れるから、耐食性の高いものが好ましく、具体的には、フッ素樹脂が好ましい。フッ素樹脂としては、例えば、ポリ四フッ化エチレン（ＰＴＦＥ）、四フッ化エチレン−フルオロアルキルビニルエーテル共重合体（ＰＦＡ）などが挙げられる。また、フッ素樹脂は不純物が少なく、中継用管２０ａ内を流れる流体の耐汚染性にも優れるという利点を有する。   The material of the relay pipe 20a is not particularly limited, but is preferably a resin because it can be obtained by simple processing. Furthermore, since the fluid flows also in the relay pipe 20a, one having high corrosion resistance is preferable, and specifically, a fluororesin is preferable. Examples of the fluororesin include polytetrafluoroethylene (PTFE) and tetrafluoroethylene-fluoroalkyl vinyl ether copolymer (PFA). In addition, the fluororesin has an advantage that it has few impurities and is excellent in contamination resistance of the fluid flowing in the relay pipe 20a.

大径配管Ｔ１、小径配管Ｔ２の材質としては特に制限されないが、各配管内を流動する流体が腐食性を有することもあるため、耐食性材料であることが好ましい。耐食性材料としては、例えば、フッ素樹脂、ステンレス鋼、ガラスなどが挙げられる。中でも、耐汚染性に優れることから、フッ素樹脂が好ましい。
さらに、大径配管Ｔ１、小径配管Ｔ２の材質および中継用管２０ａの材質がいずれもフッ素樹脂であれば、流体の汚染をより防止でき、耐汚染性により優れる。 The material of the large-diameter pipe T 1 and the small-diameter pipe T 2 is not particularly limited, but a fluid flowing through each pipe may be corrosive, so that it is preferably a corrosion-resistant material. Examples of the corrosion resistant material include fluororesin, stainless steel, and glass. Among these, a fluororesin is preferable because of excellent contamination resistance.
Furthermore, if the material of the large-diameter pipe T 1 and the small-diameter pipe T 2 and the material of the relay pipe 20a are both fluororesins, the contamination of the fluid can be further prevented and the contamination resistance is excellent.

この配管継手１を用いた配管の接続構造では、図６に示すように、大径配管挿入用部材Ａと小径配管挿入用部材Ｂとが一体化されて形成された継手本体１０ａの貫通孔１３内に中継用管２０ａが配設され、継手本体１０ａの大径配管挿入孔１１内に大径配管Ｔ１が挿入され、さらに大径配管Ｔ１の終端に中継用管２０ａが挿入されている。また、継手本体１０ａの小径配管挿入孔１２内に小径配管Ｔ２が挿入され、さらに小径配管Ｔ２の終端が中継用管２０ａ内に挿入されている。このようにして、大径配管Ｔ１と小径配管Ｔ２とが中継用管２０ａによって接続されている。 In the pipe connection structure using this pipe joint 1, as shown in FIG. 6, the through hole 13 of the joint body 10 a formed by integrating the large diameter pipe insertion member A and the small diameter pipe insertion member B. relay pipe 20a is disposed within the large diameter pipe T 1 is inserted into the large diameter pipe insertion hole 11 of the fitting body 10a, further relay tube 20a to the end of the large diameter pipe T 1 is inserted . Further, the small diameter pipe T 2 is inserted into the small-diameter pipe insertion hole 12 of the fitting body 10a, further the end of the small diameter pipe T 2 is inserted in the relay pipe 20a. In this manner, a large diameter pipe T 1 and the small-diameter pipe T 2 are connected by the relay pipe 20a.

上記配管の接続構造を形成する手順としては、例えば、下記（ａ）や（ｂ）の手順を採ることができるが、これらに限定されるものではない。
（ａ）大径配管挿入用部材Ａの孔１４ａ内に中継用管２０ａの一端を挿入する共に、小径配管挿入用部材Ｂの孔１４ｂ内に中継用管２０ａの他端を挿入して、配管継手１を形成する。次いで、配管継手１の大径配管挿入孔１１に大径配管Ｔ１を挿入し、さらに、挿入した大径配管Ｔ１に中継用管２０ａを挿入する。また、継手本体１０ａの小径配管挿入孔１２に小径配管Ｔ２を挿入し、さらに、中継用管２０ａに小径配管Ｔ２を挿入する。
（ｂ）小径配管挿入用部材Ｂの孔１４ｂ内に中継用管２０ａの一端を挿入しつつ、小径配管挿入用部材Ｂの小径配管挿入孔１２に小径配管Ｔ２を挿入し、中継用管２０ａ内に小径配管Ｔ２を挿入する。次いで、中継用管２０ａの他端を小径配管挿入用部材Ｂの孔１４ｂ内に挿入し、次いで、大径配管挿入孔１１に大径配管Ｔ１を挿入しつつ、挿入した大径配管Ｔ１に中継用管２０ａの他端を挿入する。 As a procedure for forming the pipe connection structure, for example, the following procedures (a) and (b) can be adopted, but the procedure is not limited thereto.
(A) One end of the relay pipe 20a is inserted into the hole 14a of the large-diameter pipe insertion member A, and the other end of the relay pipe 20a is inserted into the hole 14b of the small-diameter pipe insertion member B. A joint 1 is formed. Then, insert the large diameter pipe T 1 to the large diameter pipe insertion hole 11 of the pipe fitting 1, further inserting the relay pipe 20a inserted into the large diameter pipe T 1. Moreover, by inserting a small diameter tubing T 2 to the small diameter pipe insertion hole 12 of the fitting body 10a, further, inserting the small diameter tubing T 2 in the relay pipe 20a.
(B) while inserting one end of the relay pipe 20a to the small-diameter piping insertion member B of the hole 14b, inserting the small diameter tubing T 2 to the small diameter pipe insertion hole 12 of the small diameter pipe insertion member B, the relay pipe 20a inserting the small diameter tubing T 2 within. Then, insert the other end of the relay pipe 20a to the small-diameter piping insertion member B of the holes 14b, then, while inserting a large diameter pipe T 1 to the large diameter pipe insertion hole 11, the inserted large-diameter pipe T 1 Insert the other end of the relay pipe 20a.

上述した配管継手１では、大径配管挿入孔１１の口径が大径配管Ｔ１の外径と略同等であるため、大径配管挿入孔１１内に大径配管Ｔ１が密着しながら挿入され、小径配管挿入孔１２の口径が小径配管Ｔ２の外径と略同等であるため、小径配管挿入孔１２内に小径配管Ｔ２が密着しながら挿入されている。ここで、大径配管Ｔ１と小径配管Ｔ２とが挿入される継手本体１０ａが弾性高分子材料製であるから、継手本体１０ａと大径配管Ｔ１と小径配管Ｔ２との摩擦力（密着力）が大きい。したがって、大径配管Ｔ１と小径配管Ｔ２内に流体が流動した際または大径配管Ｔ１と小径配管Ｔ２内を減圧した際には、充分な気密性を確保でき、しかも充分な接続強度を持たせることができる。
また、継手本体１０ａを構成する弾性高分子材料製は不純物を含むため、これに流体が接触すると、流体を汚染するおそれがあるが、この配管継手１では、大径配管Ｔ１と小径配管Ｔ２とが、中継用管２０ａにより接続されているから、流体が継手本体１０ａに触れることがなく、耐汚染性に優れる。 In the pipe joint 1 described above, the diameter of the large-diameter pipe insertion hole 11 is substantially the same as the outer diameter of the large-diameter pipe T 1 , so the large-diameter pipe T 1 is inserted into the large-diameter pipe insertion hole 11 while closely contacting. since the diameter of the small diameter pipe insertion hole 12 is equal to approximately the outer diameter of the small diameter pipe T 2, the small-diameter pipe T 2 to the small diameter pipe insertion hole 12 is inserted with close contact. Here, the frictional force from the joint body 10a is made of elastic polymeric material, and the joint body 10a and the large-diameter pipe T 1 and the small-diameter pipe T 2 of the large diameter pipe T 1 and the small-diameter pipe T 2 is inserted ( Adhesion strength) is large. Therefore, when the fluid is depressurized flow was during or large diameter pipe T 1 and a small-diameter pipe T in 2 for large diameter pipe T 1 and a small-diameter pipe T 2, can secure sufficient airtightness, yet sufficient connection Strength can be given.
Moreover, since elastic polymer material constituting a joint body 10a is impure and this fluid contacts, there is a risk of contaminating the fluid, in the pipe joint 1, the large diameter pipe T 1 and the small diameter pipe T 2 is connected by the relay pipe 20a, the fluid does not touch the joint body 10a, and is excellent in contamination resistance.

また、弾性高分子材料製の継手本体１０ａは容易に変形するから、この配管継手１では、中継用管２０ａを貫通孔１３に容易に挿入することができ、配管を大径配管挿入孔１１、小径配管挿入孔１２に容易に挿入することができる。したがって、ねじ込み作業が不要であり、外径が互いに異なる大径配管Ｔ１と小径配管Ｔ２とを簡便に接続することができる。
さらに、上述した配管継手１の継手本体１０ａおよび中継用管２０ａは共に、ネジが形成されておらず、単純な構造であるから、簡単な成形加工により得ることができ、安価である。したがって、これらを具備する配管継手１も安価である。 Further, since the joint body 10a made of an elastic polymer material is easily deformed, in this pipe joint 1, the relay pipe 20a can be easily inserted into the through hole 13, and the pipe can be inserted into the large-diameter pipe insertion hole 11, It can be easily inserted into the small diameter pipe insertion hole 12. Accordingly, screwing work is unnecessary, it is possible outer diameter conveniently connect different large diameter pipe T 1 and a small-diameter pipe T 2 together.
Further, since the joint body 10a and the relay pipe 20a of the pipe joint 1 described above are not formed with screws and have a simple structure, they can be obtained by a simple molding process and are inexpensive. Therefore, the pipe joint 1 including these is also inexpensive.

上述した配管継手１を用いた場合には、配管継手１内を流動する流体の圧力がゲージ圧力で−７０〜＋５０ｋＰａであることが好ましく、−５０〜＋１０ｋＰａであることがより好ましい。流体の圧力がゲージ圧力で−７０ｋＰａ未満では、配管継手１にて流体内に外気が混入することがあり、ゲージ圧力で＋５０ｋＰａを超えると、配管継手１にて流体が漏れ出すことがある。   When the pipe joint 1 described above is used, the pressure of the fluid flowing in the pipe joint 1 is preferably −70 to +50 kPa as a gauge pressure, and more preferably −50 to +10 kPa. When the pressure of the fluid is less than -70 kPa as the gauge pressure, outside air may be mixed into the fluid at the pipe joint 1, and when it exceeds +50 kPa as the gauge pressure, the fluid may leak out from the pipe joint 1.

（第２の実施形態）
本発明の配管継手および配管の接続構造の第２の実施形態について説明する。
図７に、本実施形態の配管継手を示す。本実施形態の配管継手２は、同じ外径の２本の配管同士を接続するものであって、弾性高分子材料製で円筒状の継手本体１０ｂと、中継用管２０ｂとを具備するものである。
なお、本実施形態の配管継手２で接続される配管は、第１の実施形態における大径配管Ｔ１である。 (Second Embodiment)
A second embodiment of the pipe joint and pipe connection structure of the present invention will be described.
FIG. 7 shows the pipe joint of this embodiment. The pipe joint 2 of the present embodiment connects two pipes having the same outer diameter and includes a cylindrical joint body 10b made of an elastic polymer material and a relay pipe 20b. is there.
In addition, piping connected with the piping joint 2 of this embodiment is the large diameter piping T1 in 1st Embodiment.

継手本体１０ｂは、２本の大径配管Ｔ１が挿入される２つの大径配管挿入孔１１と、各大径配管挿入孔１１の終端同士を連通し、大径配管Ｔ１の内径と略同等の口径を有する貫通孔１３とが形成されたものである（図８参照）。
本実施形態における継手本体１０ｂは、第１の実施形態における大径配管挿入用部材Ａを２つ用いたものであり、具体的には、大径配管挿入用部材Ａの孔１４ａ同士が接続されて貫通孔１３が形成されるように、２つの大径配管挿入用部材Ａが一体化されたものである。 Fitting body 10b includes two large diameter pipe insertion hole 11 a large diameter pipe T 1 of the two is inserted, communicates the termination of the respective large-diameter pipe insertion hole 11, the large-diameter pipe T 1 inside diameter substantially A through hole 13 having the same diameter is formed (see FIG. 8).
The joint body 10b in this embodiment uses two large-diameter pipe insertion members A in the first embodiment, and specifically, the holes 14a of the large-diameter pipe insertion member A are connected to each other. The two large-diameter pipe insertion members A are integrated so that the through hole 13 is formed.

中継用管２０ｂは、継手本体１０ｂの貫通孔１３の口径および大径配管Ｔ１の内径と略同等の外径を有するものである（図９参照）。また、中継用管２０ｂは、継手本体１０ｂの貫通孔１３内から各大径配管挿入孔１１内の終端側までの範囲に配設されている。
中継用管２０ｂの材質は第１の実施形態と同様である。 Relay tube 20b are those having an outer diameter bore and a large diameter pipe T 1 inside diameter substantially equal to the through-hole 13 of the joint body 10b (see FIG. 9). Further, the relay pipe 20b is disposed in a range from the inside of the through hole 13 of the joint body 10b to the terminal end side in each large diameter pipe insertion hole 11.
The material of the relay pipe 20b is the same as that in the first embodiment.

この配管継手２を用いた配管の接続構造では、図１０に示すように、２つの大径配管挿入用部材Ａが一体化されて形成された継手本体１０ｂの貫通孔１３内に中継用管２０ｂが配設され、継手本体１０ｂの大径配管挿入孔１１，１１内に大径配管Ｔ１，Ｔ１が各々挿入され、さらに大径配管Ｔ１，Ｔ１の終端に中継用管２０ｂが挿入されている。このようにして、大径配管Ｔ１，Ｔ１同士が中継用管２０ｂによって接続されている。 In the pipe connection structure using the pipe joint 2, as shown in FIG. 10, the relay pipe 20b is inserted into the through hole 13 of the joint body 10b formed by integrating the two large-diameter pipe insertion members A. Are arranged, large-diameter pipes T 1 and T 1 are respectively inserted into the large-diameter pipe insertion holes 11 and 11 of the joint body 10b, and a relay pipe 20b is inserted at the end of the large-diameter pipes T 1 and T 1. Has been. In this way, the large-diameter pipes T 1 and T 1 are connected to each other by the relay pipe 20b.

上記配管の接続構造を形成する手順としては、例えば、下記（ｃ）や（ｄ）の手順を採ることができるが、これらに限定されるものではない。
（ｃ） 上記配管の接続構造を形成するためには、例えば、一方の大径配管挿入用部材Ａの孔１４ａ内に中継用管２０ｂの一端を挿入する共に、他方の大径配管挿入用部材Ａの孔１４ａ内に中継用管２０ｂの他端を挿入して、配管継手２を形成する。次いで、配管継手２の各大径配管挿入孔１１に大径配管Ｔ１を各々挿入し、さらに、挿入した大径配管Ｔ１に中継用管２０ｂを挿入する。
（ｄ） 各大径配管挿入用部材Ａの大径配管挿入孔１１に大径配管Ｔ１を各々挿入し、中継用管２０ｂの一端を一方の大径配管挿入用部材Ａの孔１４ａ内に挿入し、さらに大径配管Ｔ１に挿入する。次いで、中継用管２０ｂの他端を他方の大径配管挿入用部材Ａの孔１４ａ内に挿入し、さらに大径配管Ｔ１を挿入する。 As a procedure for forming the pipe connection structure, for example, the following procedures (c) and (d) can be adopted, but the procedure is not limited thereto.
(C) In order to form the pipe connection structure, for example, one end of the relay pipe 20b is inserted into the hole 14a of one large-diameter pipe insertion member A and the other large-diameter pipe insertion member. The other end of the relay pipe 20b is inserted into the A hole 14a to form the pipe joint 2. Then, each insert a large diameter pipe T 1 to the respective large diameter pipe insertion hole 11 of the pipe joint 2, further inserting the relay tube 20b inserted into the large diameter pipe T 1.
(D) Each of the large-diameter pipe insertion holes 11 of each large-diameter pipe insertion member A is inserted into the large-diameter pipe T1, and one end of the relay pipe 20b is inserted into the hole 14a of one large-diameter pipe insertion member A. inserted, is further inserted into the large diameter pipe T 1. Then, insert the other end of the relay tube 20b in the hole 14a of the other large diameter pipe insertion member A, further inserting the large-diameter pipe T 1.

上述した配管継手２では、大径配管挿入孔１１の口径が大径配管Ｔ１の外径と略同等であるため、大径配管挿入孔１１内に大径配管Ｔ１が密着しながら挿入されている。ここで、大径配管Ｔ１が挿入される継手本体１０ｂが弾性高分子材料製であるから、継手本体１０ｂと大径配管Ｔ１との摩擦力（密着力）が大きい。したがって、大径配管Ｔ１内を流体が流動した際または大径配管Ｔ１内を減圧した際には、充分な気密性を確保でき、しかも充分な接続強度を持たせることができる。
また、弾性高分子材料製の継手本体１０ｂは容易に変形するから、第１の実施形態と同様に、配管継手２によれば、大径配管Ｔ１，Ｔ１同士を簡便に接続することができる。さらに、上述した配管継手２は、第１の実施形態と同様の理由から安価である。 In the piping joint 2 described above, since the diameter of the large-diameter pipe insertion hole 11 is substantially equal to the outer diameter of the large diameter pipe T 1, large diameter pipe T 1 is inserted while in close contact with the large-diameter pipe insertion hole 11 ing. Here, since the joint body 10b a large diameter pipe T 1 is inserted is made of elastic polymeric material, the friction force between the large diameter pipe T 1 and the fitting body 10b (adhesion) is large. Accordingly, a large diameter pipe T 1 when the fluid is depressurized when the flow or a large diameter pipe T 1 can secure sufficient airtightness, yet can have a sufficient connection strength.
Further, since the joint body 10b made of an elastic polymer material is easily deformed, the large-diameter pipes T 1 and T 1 can be easily connected to each other according to the pipe joint 2 as in the first embodiment. it can. Furthermore, the pipe joint 2 described above is inexpensive for the same reason as in the first embodiment.

（第３の実施形態）
本発明の配管継手および配管の接続構造の第３の実施形態について説明する。
図１１に、本実施形態の配管継手を示す。本実施形態の配管継手３は、同じ外径の２本の配管同士を接続するものであって、弾性高分子材料製で円筒状の継手本体１０ｃと、中継用管２０ｃとを具備するものである。
なお、本実施形態の配管継手３で接続される配管は、第１の実施形態における小径配管Ｔ２である。 (Third embodiment)
A third embodiment of the pipe joint and pipe connection structure of the present invention will be described.
FIG. 11 shows the pipe joint of this embodiment. The pipe joint 3 of the present embodiment connects two pipes having the same outer diameter, and includes a cylindrical joint body 10c made of an elastic polymer material and a relay pipe 20c. is there.
Note that pipe connected by a pipe joint 3 of the present embodiment is a small-diameter pipe T 2 in the first embodiment.

継手本体１０ｃは、２本の小径配管Ｔ２が挿入される２つの小径配管挿入孔１２と、各小径配管挿入孔１２の終端同士を連通し、小径配管Ｔ２の外径より大きい口径を有する貫通孔１３とが形成されたものである（図１２参照）。
本実施形態における継手本体１０ｃは、第１の実施形態における小径配管挿入用部材Ｂを２つ用いたものであり、具体的には、小径配管挿入用部材Ｂの孔１４ｂ同士が接続されて貫通孔１３が形成されるように、２つの小径配管挿入用部材Ｂが一体化されたものである。 Fitting body 10c includes two small-diameter pipe insertion hole 12 diameter pipe T 2 of the two is inserted, it communicates the termination of the respective small-diameter pipe insertion hole 12, the larger diameter than the outer diameter of the small diameter pipe T 2 A through hole 13 is formed (see FIG. 12).
The joint body 10c in the present embodiment uses two small-diameter pipe insertion members B in the first embodiment. Specifically, the holes 14b of the small-diameter pipe insertion member B are connected to each other and penetrated. Two small-diameter pipe insertion members B are integrated so that the holes 13 are formed.

中継用管２０ｃは、継手本体１０ｃの貫通孔１３の口径と略同等の外径を有し、かつ、小径配管Ｔ２の外径と略同等の内径を有するものである（図１３参照）。また、中継用管２０ｃは、継手本体１０ｃの貫通孔１３内に配設されている。
なお、図示例では、中継用管２０ｃの長さ貫通孔１３の長さと同じであるが、必ずしも同じである必要はない。ただし、中継用管２０ｃの長さと貫通孔１３の長さと同じであれば、中継用管２０ｃと貫通孔１３とが同じ大きさになり、位置決めが容易になる。 Relay pipe 20c has an outer diameter bore and substantially equal to the through-hole 13 of the fitting body 10c, and those having an outer diameter substantially equal to the inner diameter of the small-diameter pipe T 2 (see FIG. 13). The relay pipe 20c is disposed in the through hole 13 of the joint body 10c.
In the illustrated example, the length of the relay pipe 20c is the same as the length of the through hole 13, but it is not necessarily the same. However, if the length of the relay pipe 20c and the length of the through hole 13 are the same, the relay pipe 20c and the through hole 13 have the same size, and positioning becomes easy.

この配管継手３を用いた配管の接続構造では、図１４に示すように、２つの小径配管挿入用部材Ｂが一体化されて形成された継手本体１０ｃの貫通孔１３内に中継用管２０ｃが配設され、継手本体１０ｃの小径配管挿入孔１２，１２内に小径配管Ｔ２，Ｔ２が各々挿入され、さらに小径配管Ｔ２，Ｔ２の終端が中継用管２０ｃ内に挿入されている。このようにして、小径配管Ｔ２，Ｔ２同士が中継用管２０ｃによって接続されている。 In the pipe connection structure using this pipe joint 3, as shown in FIG. 14, the relay pipe 20c is provided in the through hole 13 of the joint body 10c formed by integrating the two small diameter pipe insertion members B. is disposed, a small-diameter pipe T 2, T 2 is inserted respectively into the small diameter pipe insertion hole 12, 12 of the fitting body 10c, further the end of the small diameter pipe T 2, T 2 is inserted in the relay pipe 20c . In this way, the small diameter pipes T 2 and T 2 are connected to each other by the relay pipe 20c.

上記配管の接続構造を形成する手順としては、例えば、下記（ｅ）の手順を採ることができるが、これらに限定されるものではない。
（ｅ）一方の小径配管挿入用部材Ｂの孔１４ｂ内に中継用管２０ｃの一端を挿入する共に、他方の小径配管挿入用部材Ｂの孔１４ｂ内に中継用管２０ｃの他端を挿入して、配管継手３を形成する。次いで、配管継手３の各小径配管挿入孔１２に小径配管Ｔ２を各々挿入し、さらに、挿入した小径配管Ｔ２を中継用管２０ｃに挿入する。 As a procedure for forming the pipe connection structure, for example, the following procedure (e) can be adopted, but is not limited thereto.
(E) One end of the relay pipe 20c is inserted into the hole 14b of one small diameter pipe insertion member B, and the other end of the relay pipe 20c is inserted into the hole 14b of the other small diameter pipe insertion member B. Thus, the pipe joint 3 is formed. Then, each insert a small diameter pipe T 2 in each small-diameter pipe insertion hole 12 of the pipe joint 3, further inserting the inserted small diameter pipe T 2 in the relay pipe 20c.

上述した配管継手３では、小径配管挿入孔１２の口径が小径配管Ｔ２の外径と略同等であるため、小径配管挿入孔１２内に小径配管Ｔ２が密着しながら挿入されている。ここで、小径配管Ｔ２が挿入される継手本体１０ｃが弾性高分子材料製であるから、継手本体１０ｃと小径配管Ｔ２との摩擦力（密着力）が大きくなっている。したがって、小径配管Ｔ２内を流体が流動した際または小径配管Ｔ２内を減圧した際には、充分な気密性を確保でき、しかも充分な接続強度を持たせることができる。
また、弾性高分子材料製の継手本体１０ｃは容易に変形するから、第１の実施形態と同様に、配管継手３によれば、小径配管Ｔ２，Ｔ２同士を簡便に接続することができる。さらに、上述した配管継手３も、第１の実施形態と同様の理由から安価である。 In the pipe joint 3 described above, since the diameter of the small diameter pipe insertion hole 12 is equal to approximately the outer diameter of the small diameter pipe T 2, the small-diameter pipe T 2 are inserted while in close contact with the small-diameter pipe insertion hole 12. Here, since the joint body 10c of the small diameter pipe T 2 is inserted is made of elastic polymeric material, the frictional force between the joint body 10c and the small diameter pipe T 2 (adhesion) increases. Therefore, a small-diameter pipe T in 2 when the fluid is depressurized flow was during or small pipe T in 2 can secure sufficient airtightness, yet can have a sufficient connection strength.
Further, since the joint body 10c made of an elastic polymer material is easily deformed, the small-diameter pipes T 2 and T 2 can be easily connected to each other according to the pipe joint 3 as in the first embodiment. . Furthermore, the pipe joint 3 described above is also inexpensive for the same reason as in the first embodiment.

なお、本発明は、上述した実施形態に限定されない。例えば、上述した実施形態では、配管挿入孔の口径が配管の外径と略同等であったが、継手本体は弾性高分子材料製であり、容易に変形するから、配管を挿入できる範囲で、配管挿入孔の口径が配管の外径より小さくても構わない。   In addition, this invention is not limited to embodiment mentioned above. For example, in the above-described embodiment, the diameter of the pipe insertion hole is substantially the same as the outer diameter of the pipe, but the joint body is made of an elastic polymer material and easily deforms. The diameter of the pipe insertion hole may be smaller than the outer diameter of the pipe.

また、上述した実施形態では、継手本体は２つの部材が一体化されたものであったが、１つの部材であってもよいし、３つ以上の部材が一体化されたものであっても構わない。しかし、継手本体が２つの部材を一体化したものであれば、上述した第１〜第３の実施形態のように、大径配管挿入用部材Ａと小径配管挿入用部材Ｂとの組み合わせを変更することにより、接続する配管の外径に応じて継手本体の種類を容易に変更できる。このことから、本発明における継手本体は、２つの部材が一体化されたものが好ましい。   Further, in the above-described embodiment, the joint main body is the one in which two members are integrated, but may be one member, or may be one in which three or more members are integrated. I do not care. However, if the joint main body is an integration of two members, the combination of the large-diameter pipe insertion member A and the small-diameter pipe insertion member B is changed as in the first to third embodiments described above. By doing, the kind of joint main body can be easily changed according to the outer diameter of the piping to connect. From this, the joint main body in the present invention is preferably one in which two members are integrated.

上述した第２の実施形態では、大径配管Ｔ１，Ｔ１同士を接続したが、小径配管Ｔ２，Ｔ２同士を接続してもよく、第３の実施形態では、小径配管Ｔ２，Ｔ２同士を接続したが、大径配管Ｔ１，Ｔ１同士を接続してもよい。 In the second embodiment described above has been connected to the large diameter pipe T 1, T 1 each other may be connected to the small diameter pipe T 2, T 2 together, in the third embodiment, the small diameter pipe T 2, was connected to T 2 together, it may be connected to the large diameter pipe T 1, T 1 together.

本発明に係る第１の実施形態の配管継手を示す断面図である。It is sectional drawing which shows the piping joint of 1st Embodiment which concerns on this invention. 第１の実施形態における継手本体を示す断面図である。It is sectional drawing which shows the coupling main body in 1st Embodiment. 図２の継手本体を構成する大径配管挿入用部材を示す断面図である。It is sectional drawing which shows the member for large diameter piping insertion which comprises the coupling main body of FIG. 図２の継手本体を構成する小径配管挿入用部材を示す断面図である。It is sectional drawing which shows the member for small diameter piping insertion which comprises the coupling main body of FIG. 第１の実施形態における中継用管を示す断面図である。It is sectional drawing which shows the pipe | tube for relay in 1st Embodiment. 本発明に係る第１の実施形態の配管の接続構造を示す断面図である。It is sectional drawing which shows the connection structure of piping of 1st Embodiment which concerns on this invention. 本発明に係る第２の実施形態の配管継手を示す断面図である。It is sectional drawing which shows the piping joint of 2nd Embodiment which concerns on this invention. 第２の実施形態における継手本体を示す断面図である。It is sectional drawing which shows the coupling main body in 2nd Embodiment. 第２の実施形態における中継用管を示す断面図である。It is sectional drawing which shows the pipe for relays in 2nd Embodiment. 本発明に係る第２の実施形態の配管の接続構造を示す断面図である。It is sectional drawing which shows the connection structure of piping of 2nd Embodiment which concerns on this invention. 本発明に係る第３の実施形態の配管継手を示す断面図である。It is sectional drawing which shows the piping joint of 3rd Embodiment which concerns on this invention. 第３の実施形態における継手本体を示す断面図である。It is sectional drawing which shows the coupling main body in 3rd Embodiment. 第３の実施形態における中継用管を示す断面図である。It is sectional drawing which shows the pipe for relay in 3rd Embodiment. 本発明に係る第３の実施形態の配管の接続構造を示す断面図である。It is sectional drawing which shows the connection structure of piping of 3rd Embodiment which concerns on this invention.

符号の説明Explanation of symbols

１，２，３ 配管継手
１０ａ，１０ｂ，１０ｃ 継手本体
１１ 大径配管挿入孔
１２ 小径配管挿入孔
１３ 貫通孔
１４ａ，１４ｂ 孔
２０ａ，２０ｂ，２０ｃ 中継用管
Ａ 大径配管挿入用部材
Ｂ 小径配管挿入用部材
Ｔ１ 大径配管
Ｔ２ 小径配管
1, 2, 3 Piping joints 10a, 10b, 10c Joint body 11 Large diameter pipe insertion hole 12 Small diameter pipe insertion hole 13 Through hole 14a, 14b Hole 20a, 20b, 20c Relay pipe A Large diameter pipe insertion member B Small diameter pipe Insertion member T 1 Large diameter piping T 2 Small diameter piping

Claims (6)

外径が異なる２本の配管同士を接続する配管継手において、
弾性高分子材料製の継手本体と、中継用管とを具備し、
継手本体が、外径が大きい方の配管である大径配管が挿入される大径配管挿入孔と、外径が小さい方の配管である小径配管が挿入される小径配管挿入孔と、大径配管挿入孔の終端と小径配管挿入孔の終端とを連通し、大径配管の内径と略同等の口径を有する貫通孔とが形成されたものであり、
中継用管は、外径全体が前記継手本体の貫通孔の口径および前記大径配管の内径と略同等であり、内径全体が前記小径配管の外径と略同等であり、前記継手本体の貫通孔内から前記大径配管挿入孔内の終端側までの範囲に配設され、
小径配管を中継用管の一端に挿入し、中継用管の他端を大径配管に挿入するように構成されたものであることを特徴とする配管継手。 In a pipe joint that connects two pipes with different outer diameters,
It comprises a joint body made of an elastic polymer material and a relay pipe,
The joint body has a large-diameter pipe insertion hole into which a large-diameter pipe that has a larger outer diameter is inserted, a small-diameter pipe insertion hole into which a small-diameter pipe that has a smaller outer diameter is inserted, and a large-diameter pipe. The end of the pipe insertion hole and the end of the small diameter pipe insertion hole communicate with each other, and a through hole having a diameter substantially equal to the inner diameter of the large diameter pipe is formed.
The relay pipe has an entire outer diameter substantially equal to the diameter of the through hole of the joint body and the inner diameter of the large diameter pipe , and the entire inner diameter is substantially equal to the outer diameter of the small diameter pipe. Arranged in the range from the hole to the end side in the large-diameter pipe insertion hole ,
A pipe joint characterized in that a small-diameter pipe is inserted into one end of a relay pipe and the other end of the relay pipe is inserted into a large-diameter pipe . 同じ外径の２本の配管同士を接続する配管継手において、
弾性高分子材料製の継手本体と、中継用管とを具備し、
継手本体が、各配管が挿入される２つの配管挿入孔と、各配管挿入孔の終端同士を連通し、前記配管の内径と略同等の口径を有する貫通孔とが形成されたものであり、
中継用管は、外径全体が前記継手本体の貫通孔の口径および前記配管の内径と略同等であり、前記継手本体の貫通孔内から各配管挿入孔内の終端側までの範囲に配設され、
中継用管の一端を一方の配管に挿入し、中継用管の他端を他方の配管に挿入するように構成されたものであることを特徴とする配管継手。 In a pipe joint that connects two pipes with the same outer diameter,
It comprises a joint body made of an elastic polymer material and a relay pipe,
The joint body is formed with two pipe insertion holes into which the respective pipes are inserted, and through holes having a diameter substantially equal to the inner diameter of the pipes, communicating with the terminal ends of the respective pipe insertion holes.
Relay tube outer径全body is substantially equal to the diameter and the inner diameter of the pipe of the through hole of the joint body, arranged from the through hole of the joint body to a range to the end side in each pipe insertion hole It is,
A pipe joint characterized in that one end of a relay pipe is inserted into one pipe and the other end of the relay pipe is inserted into the other pipe. 同じ外径の２本の配管同士を接続する配管継手において、
弾性高分子材料製の継手本体と、中継用管とを具備し、
継手本体が、各配管が挿入される２つの配管挿入孔と、各配管挿入孔の終端同士を連通し、前記配管の外径より大きい口径を有する貫通孔とが形成されたものであり、
中継用管は、外径全体が前記継手本体の貫通孔の口径と略同等であり、かつ、内径全体が前記配管の外径と略同等であり、前記継手本体の貫通孔内に配設され、
一方の配管を中継用管の一端に挿入し、他方の配管を中継用管の他端に挿入するように構成されたものであることを特徴とする配管継手。 In a pipe joint that connects two pipes with the same outer diameter,
It comprises a joint body made of an elastic polymer material and a relay pipe,
The joint body is formed with two pipe insertion holes into which the pipes are inserted, and through holes having a diameter larger than the outer diameter of the pipes, communicating the terminal ends of the pipe insertion holes.
Relay tube outer径全body is equal to approximately the diameter of the through hole of the joint body, and the entire inner diameter is substantially equal to the outer diameter of the pipe, is disposed in the through hole of the joint body ,
A pipe joint characterized in that one pipe is inserted into one end of a relay pipe and the other pipe is inserted into the other end of the relay pipe. 中継用管がフッ素樹脂製である請求項１〜３のいずれか一項に記載の配管継手。 The pipe joint according to any one of claims 1 to 3, wherein the relay pipe is made of a fluororesin. 継手本体がシリコーンゴム製である請求項１〜４のいずれか一項に記載の配管継手。The joint body according to any one of claims 1 to 4, wherein the joint body is made of silicone rubber. 請求項１〜５のいずれか一項に記載の配管継手によって２本の配管同士が接続されたことを特徴とする配管の接続構造。 A pipe connection structure in which two pipes are connected to each other by the pipe joint according to any one of claims 1 to 5 .
JP2005338469A 2005-11-24 2005-11-24 Piping joint and piping connection structure Expired - Fee Related JP4832866B2 (en)

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WO2014033775A1 (en) * 2012-08-29 2014-03-06 株式会社島津製作所 Tube connecting connector
JP6236942B2 (en) * 2013-07-10 2017-11-29 富士通株式会社 Piping connection structure, cooling system, and electronic equipment
GB2551694A (en) * 2016-05-27 2018-01-03 Vip-Polymers Ltd Coupling
JP7530255B2 (en) 2020-09-17 2024-08-07 積水化学工業株式会社 Pipe fittings, piping and piping systems

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JPS5023864Y1 (en) * 1969-12-31 1975-07-18
US4480860A (en) * 1983-08-29 1984-11-06 Clamp-All Corp. Transition coupling and clamp assembly containing same
JPS60129582U (en) * 1984-02-10 1985-08-30 松下電器産業株式会社 pipe fittings
JPS62172887U (en) * 1986-04-23 1987-11-02
JP3035096B2 (en) * 1992-10-14 2000-04-17 英光 合田 Connection devices for pipes, rods, etc.
JPH07217934A (en) * 1993-06-21 1995-08-18 Sekisui Chem Co Ltd Drain pipe, fitting for drain pipe and drain piping using them
JPH0791573A (en) * 1993-09-24 1995-04-04 Fuji Electric Co Ltd Pipe coupling structure for beverage supplier
DE4334570A1 (en) * 1993-10-11 1995-04-13 Bayerische Motoren Werke Ag Pipe connection with length compensation
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