JPH0710676U - Corrosion resistant connection structure - Google Patents
Corrosion resistant connection structureInfo
- Publication number
- JPH0710676U JPH0710676U JP4464393U JP4464393U JPH0710676U JP H0710676 U JPH0710676 U JP H0710676U JP 4464393 U JP4464393 U JP 4464393U JP 4464393 U JP4464393 U JP 4464393U JP H0710676 U JPH0710676 U JP H0710676U
- Authority
- JP
- Japan
- Prior art keywords
- bellows tube
- joint body
- outer collar
- bent outer
- connection structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Joints With Pressure Members (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
(57)【要約】
【目的】 異種金属の接触による継手本体の腐蝕を防止
できる防蝕接続構造を提供する。
【構成】 ステンレス製蛇腹管１の端部に所定小寸法Ｅ
の最先端ストレート部８と折曲外鍔部９を形成する。蛇
腹管１の端部が対応する金属製継手本体３の挿入端18に
於て、最先端ストレート部８が挿入される部位及び折曲
外鍔部９が押圧される端面部に渡って止水面受圧樹脂部
14を被覆状に形成する。
(57) [Abstract] [Purpose] To provide a corrosion-resistant connection structure capable of preventing corrosion of a joint body due to contact of dissimilar metals. [Structure] A predetermined small dimension E is attached to the end of the bellows tube 1 made of stainless steel.
The frontmost straight part 8 and the bent outer collar part 9 are formed. At the insertion end 18 of the metal joint body 3 to which the end of the bellows tube 1 corresponds, the water-stopping surface extends over the part into which the most distal straight part 8 is inserted and the end face on which the bent outer collar part 9 is pressed. Pressure receiving resin part
14 is formed into a coating.
Description
【０００１】[0001]
本考案は防蝕接続構造に関する。 The present invention relates to a corrosion resistant connection structure.
【０００２】[0002]
水，工場排水，薬品，化学液，ガス等を流すための配管用ステンレス製蛇腹管 は、従来、筒状の鋳物製継手本体の内端縁部に、蛇腹管の端部に形成された最先 端ストレート部を挿入し、袋ナット等の締結により蛇腹管と継手本体を接続する 構造になっていた。 Conventionally, stainless steel bellows pipes for flowing water, factory wastewater, chemicals, chemical liquids, gas, etc., are the innermost edges of the tubular casting joint body, and are the largest formed at the end of the bellows pipe. The structure was such that the bellows pipe and the joint body were connected by inserting the straight portion at the tip and fastening a cap nut or the like.
【０００３】[0003]
しかし、この接続構造では、蛇腹管の最先端ストレート部と継手本体の内端縁 部とが直接的に金属接触するために、異種金属（ステンレスと鉄）接触により、 継手本体の内端縁部が腐蝕する問題があった。 However, in this connection structure, since the most advanced straight part of the bellows tube and the inner end edge of the joint body are in direct metal contact, dissimilar metal (stainless steel and iron) contact causes the inner end edge of the joint body. There was a problem of corrosion.
【０００４】 そこで、本考案は従来のこのような問題点を解決して、異種金属の接触による 継手本体の腐蝕を防止できる防蝕接続構造を提供することを目的とする。Therefore, an object of the present invention is to solve the above-mentioned conventional problems and to provide a corrosion-resistant connection structure capable of preventing corrosion of the joint body due to contact of dissimilar metals.
【０００５】[0005]
本考案は、上記目的を達成するために、ステンレス製蛇腹管の端部に所定小寸 法の最先端ストレート部と折曲外鍔部を形成し、該蛇腹管の端部が対応する金属 製継手本体の挿入端に於て、該最先端ストレート部が挿入される部位及び該折曲 外鍔部が押圧される端面部に渡って止水面受圧樹脂部を被覆状に形成したもので ある。 According to the present invention, in order to achieve the above object, a stainless steel bellows tube is formed with a front end straight part and a bent outer collar part of a predetermined small size, and the end part of the bellows tube is made of a corresponding metal. In the insertion end of the joint body, the water-stop surface pressure-receiving resin portion is formed in a cover shape over the portion into which the most distal straight portion is inserted and the end surface portion against which the bent outer collar portion is pressed.
【０００６】[0006]
止水面受圧樹脂部に、蛇腹管の最先端ストレート部を挿入し、かつ、折曲外鍔 部を押圧して継手本体と蛇腹管を接続すれば、蛇腹管と金属製継手本体が直接接 触しないので、異種金属接触による継手本体の腐蝕を防止できる。 Insert the cutting-edge straight part of the bellows pipe into the water-stop surface pressure-receiving resin part, and press the bent outer collar part to connect the joint body and the bellows pipe. Since it does not, it is possible to prevent corrosion of the joint body due to contact with dissimilar metals.
【０００７】[0007]
以下実施例を示す図面に基づいて本考案を詳説する。 Hereinafter, the present invention will be described in detail with reference to the drawings illustrating an embodiment.
【０００８】 図１は、本考案に係る防蝕接続構造の一例で、ステンレス製蛇腹管１と被接続 用パイプ２を、鋳造等にて形成された金属製継手本体３と、袋ナット４にて接続 した場合を示している。FIG. 1 shows an example of a corrosion-resistant connection structure according to the present invention, in which a stainless steel bellows tube 1 and a pipe 2 to be connected are made of a metal joint body 3 formed by casting and a cap nut 4. Shown when connected.
【０００９】 パイプ２は、鋼管５の内面に樹脂層６を被覆してなり、鋼管５の外周端部には 、雄ネジ部７が形成される。The pipe 2 is formed by coating the inner surface of the steel pipe 5 with a resin layer 6, and a male screw portion 7 is formed on the outer peripheral end of the steel pipe 5.
【００１０】 また、蛇腹管１の端部には、所定小寸法Ｅの最先端ストレート部８と折曲外鍔 部９が形成される。Further, the end portion of the bellows tube 1 is formed with a front end straight portion 8 having a predetermined small dimension E and a bent outer collar portion 9.
【００１１】 なお、図例では、蛇腹管１の本体部19と折曲外鍔部９の間に短円筒状ストレー ト部20を形成し、該ストレート部20に、リンク21と袋ナット４の内鍔部22が遊嵌 状に外嵌されている。In the illustrated example, a short cylindrical straight portion 20 is formed between the body portion 19 of the bellows tube 1 and the bent outer collar portion 9, and the link 21 and the cap nut 4 are formed on the straight portion 20. The inner collar 22 is loosely fitted on the outer side.
【００１２】 次に、図１と図２に示すように、短筒状の継手本体３は、その外面に、袋ナッ ト４の雌ネジ部10が螺合する雄ネジ部11を有しており、継手本体３の内部には、 外面に小突条を有する円筒部12，Ｌ字状断面の外周壁部13及び止水面受圧樹脂部 14からなる防蝕樹脂体15が、射出成型等にて形成される。Next, as shown in FIGS. 1 and 2, the joint body 3 in the form of a short cylinder has a male threaded portion 11 to which the female threaded portion 10 of the bag nut 4 is screwed, on its outer surface. In the inside of the joint body 3, a corrosion-resistant resin body 15 including a cylindrical portion 12 having a small ridge on the outer surface, an outer peripheral wall portion 13 having an L-shaped cross section, and a water-stop surface pressure-receiving resin portion 14 is formed by injection molding or the like. It is formed.
【００１３】 継手本体３の内面には、雌ネジ部16、内周凹溝17及び蛇腹管１の端部が対応す る挿入端18が、形成されており、この挿入端18は、ガスケット23及び止水面受圧 樹脂部14を介して蛇腹管１の折曲外鍔部９が対応する受圧支持端面26を有してい る。そして、防蝕樹脂体15の外周壁部13は、内周凹溝17に被覆状に形成される。The inner surface of the joint body 3 is formed with an internal threaded portion 16, an inner peripheral groove 17, and an insertion end 18 corresponding to the end of the bellows tube 1. The insertion end 18 is formed by a gasket 23. Further, the bent outer flange portion 9 of the bellows tube 1 has a corresponding pressure receiving support end surface 26 through the water blocking surface pressure receiving resin portion 14. The outer peripheral wall portion 13 of the anticorrosion resin body 15 is formed in the inner peripheral recessed groove 17 so as to cover it.
【００１４】 さらに、防蝕樹脂体15の止水面受圧樹脂部14は、挿入端18に於て、蛇腹管１の 最先端ストレート部８が挿入される部位及び折曲外鍔部９が押圧される端面部に 渡って被覆状に形成される。Further, the water-stopping surface pressure-receiving resin portion 14 of the anticorrosion resin body 15 is pressed at the insertion end 18 by the portion into which the most distal straight portion 8 of the bellows tube 1 is inserted and the bent outer collar portion 9. It is formed in a covering shape over the end face portion.
【００１５】 しかして、パイプ２は、その雄ネジ部７を継手本体３の雌ネジ部16にねじ込む ことにより、継手本体３に接続され、防蝕樹脂体15の円筒部12の外面が、パイプ ２の樹脂層６の内面に密着してシールされる。Then, the pipe 2 is connected to the joint body 3 by screwing the male screw portion 7 into the female screw portion 16 of the joint body 3, and the outer surface of the cylindrical portion 12 of the anticorrosion resin body 15 is The inner surface of the resin layer 6 is closely adhered and sealed.
【００１６】 また、蛇腹管１の最先端ストレート部８に円環状ガスケット23を外嵌して、該 最先端ストレート部８を止水面受圧樹脂部14の内面に挿入し、継手本体３の雄ネ ジ部11に袋ナット４の雌ネジ部10をねじ込んで、内鍔部22及びリンク21にて、折 曲外鍔部９を、ガスケット23を介して間接に、止水面受圧樹脂部14の端面24に押 圧して、継手本体３に蛇腹管１が接続される。Further, an annular gasket 23 is externally fitted to the most distal straight portion 8 of the bellows tube 1, and the most distal straight portion 8 is inserted into the inner surface of the water blocking surface pressure receiving resin portion 14, and the male connector of the joint body 3 is inserted. The female screw part 10 of the cap nut 4 is screwed into the screw part 11, and the bent outer flange part 9 is indirectly connected to the inner flange part 22 and the link 21 via the gasket 23 and the end surface of the water-stop surface pressure-receiving resin part 14. The bellows tube 1 is connected to the joint body 3 by pressing it to 24.
【００１７】 図１の接続状態では、パイプ２、防蝕樹脂体15及び蛇腹管１で形成される流路 25に於て、異種金属である継手本体３と蛇腹管１が相互に接触する部位が全く無 いので、継手本体３の腐蝕が確実に防止できる。In the connected state of FIG. 1, in the flow path 25 formed by the pipe 2, the anticorrosive resin body 15 and the bellows tube 1, there is a portion where the joint body 3 and the bellows tube 1 which are different metals come into contact with each other. Since there is nothing, corrosion of the joint body 3 can be reliably prevented.
【００１８】 なお、本考案は上述の実施例に限定されず、本考案の要旨を逸脱しない範囲で 設計変更自由である。It should be noted that the present invention is not limited to the above-described embodiments, and design changes can be freely made without departing from the gist of the present invention.
【００１９】 例えば、図３に示すように、蛇腹管１は（図示省略の）各種被覆保護層を有す ることもあり、また、ストレート部20に、袋ナット４の内鍔部22の軸方向厚みよ り長い短円筒体27を、外嵌させて上記被覆保護層を蛇腹管１に固定した構造のも のであっても良い。For example, as shown in FIG. 3, the bellows tube 1 may have various coating protection layers (not shown), and the straight portion 20 has a shaft of the inner flange portion 22 of the cap nut 4. It is also possible to have a structure in which a short cylindrical body 27, which is longer than the thickness in the direction, is externally fitted to fix the coating protective layer to the bellows tube 1.
【００２０】[0020]
本考案は上述の如く構成されているので、次に記載するような著大な効果を奏 する。 Since the present invention is constructed as described above, it has a great effect as described below.
【００２１】 止水面受圧樹脂部14に、蛇腹管１の最先端ストレート部８を挿入し、かつ、折 曲外鍔部９を押圧して継手本体３と蛇腹管１を接続すれば、これにより形成され る流路に於て、異種金属である継手本体３と蛇腹管１が相互に接触する部位が全 く無くなるので、継手本体３の腐蝕が確実に防止できる。By inserting the most distal straight portion 8 of the bellows tube 1 into the water blocking surface pressure receiving resin portion 14 and pressing the bent outer collar portion 9 to connect the joint body 3 and the bellows tube 1, In the formed flow path, the joint main body 3 which is a dissimilar metal and the bellows pipe 1 are completely eliminated from contact with each other, so that the corrosion of the joint main body 3 can be reliably prevented.
【図１】本考案の一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】分解状態を示す断面図である。FIG. 2 is a cross-sectional view showing a disassembled state.
【図３】他の実施例を示す断面図である。FIG. 3 is a sectional view showing another embodiment.
１ 蛇腹管 ３ 継手本体 ８ 最先端ストレート部 ９ 折曲外鍔部 14 止水面受圧樹脂部 18 挿入端 Ｅ 小寸法 1 Bellows tube 3 Joint body 8 Cutting edge straight part 9 Bending outer collar part 14 Water stop surface pressure receiving resin part 18 Insertion end E Small size
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ１６Ｌ 58/18 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location F16L 58/18
Claims (1)
法Ｅの最先端ストレート部８と折曲外鍔部９を形成し、
該蛇腹管１の端部が対応する金属製継手本体３の挿入端
18に於て、該最先端ストレート部８が挿入される部位及
び該折曲外鍔部９が押圧される端面部に渡って止水面受
圧樹脂部14を被覆状に形成したことを特徴とする防蝕接
続構造。1. A front end straight portion 8 having a predetermined small dimension E and a bent outer collar portion 9 are formed on an end portion of a stainless bellows tube 1.
The insertion end of the metal joint body 3 to which the end of the bellows tube 1 corresponds
In 18, a water-stop surface pressure-receiving resin portion 14 is formed in a covering shape over a portion into which the most distal straight portion 8 is inserted and an end surface portion against which the bent outer collar portion 9 is pressed. Corrosion resistant connection structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4464393U JPH0710676U (en) | 1993-07-22 | 1993-07-22 | Corrosion resistant connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4464393U JPH0710676U (en) | 1993-07-22 | 1993-07-22 | Corrosion resistant connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0710676U true JPH0710676U (en) | 1995-02-14 |
Family
ID=12697124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4464393U Pending JPH0710676U (en) | 1993-07-22 | 1993-07-22 | Corrosion resistant connection structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0710676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014122697A (en) * | 2012-12-21 | 2014-07-03 | Paradise Industry Co Ltd | Pipe connecting device and pipe connecting method |
-
1993
- 1993-07-22 JP JP4464393U patent/JPH0710676U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014122697A (en) * | 2012-12-21 | 2014-07-03 | Paradise Industry Co Ltd | Pipe connecting device and pipe connecting method |
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