JP2003074773A - Flange fixing structure for connecting synthetic resin pipe - Google Patents
Flange fixing structure for connecting synthetic resin pipeInfo
- Publication number
- JP2003074773A JP2003074773A JP2001266166A JP2001266166A JP2003074773A JP 2003074773 A JP2003074773 A JP 2003074773A JP 2001266166 A JP2001266166 A JP 2001266166A JP 2001266166 A JP2001266166 A JP 2001266166A JP 2003074773 A JP2003074773 A JP 2003074773A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- resin pipe
- flange
- opening end
- end edge
- 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
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はポリエチレン管等の
合成樹脂管を接合するためのフランジの固着構造に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing structure for a flange for joining a synthetic resin pipe such as a polyethylene pipe.
【０００２】[0002]
【従来の技術】上水道，下水道等の配管として使用され
るポリエチレン管は、接着剤による接合ができないの
で、従来から電気融着工法による配管工事がなされてい
る。しかし配管現場で電気融着工法を使うことには以下
のような不都合がある。即ち、現場では配管が土で汚れ
たり雨天時等に水濡れし易いが、そうした場合に融着が
不完全になり、また、配管を融着時に水平に保たないと
融着が不完全になるので現場地面に勾配があると完全な
融着が困難となり、さらには、融着時に両ポリエチレン
管を固定するための冶具を搬入しなければならずスペー
スが狭いことと相俟って作業が容易でないという問題が
ある。また、従来の電気融着工法では一旦接合すると離
脱が困難であるという問題もあった。2. Description of the Related Art Polyethylene pipes used as pipes for waterworks, sewers, etc. cannot be joined by an adhesive, and therefore, piping work has been conventionally performed by an electric fusion method. However, the use of the electric fusion welding method at the piping site has the following disadvantages. That is, in the field, the pipes are easily soiled or wet with water when it rains, but in such a case, the fusion will be incomplete, and if the pipes are not kept horizontal during fusion, the fusion will be incomplete. Therefore, if there is a slope on the site ground, it will be difficult to perform complete fusion bonding.Furthermore, it is necessary to carry in a jig for fixing both polyethylene pipes at the time of fusion, and the space is narrow, which makes work difficult. There is a problem that it is not easy. In addition, the conventional electric fusion bonding method has a problem that it is difficult to separate once joined.
【０００３】[0003]
【発明が解決しようとする課題】本発明は上記問題点を
解決し、現場で強固な接合が容易にでき、工事の簡略化
およびコストが軽減される合成樹脂管を接合するための
フランジの固着構造を提供するものである。SUMMARY OF THE INVENTION The present invention solves the above problems and facilitates strong joints on site, simplifies construction and reduces costs, and secures flanges for joining synthetic resin pipes. It provides the structure.
【０００４】[0004]
【課題を解決するための手段】そのために本発明は、接
合用フランジの内周縁に先端が合成樹脂管の開口端縁の
内側に入り得るように外周面がテーパ状に先細に形成さ
れたテーパ筒部を一体に突設し、剛性リングを合成樹脂
管の開口端縁の外周に遊嵌するとともに、少なくとも２
分割された締付リングの内周に合成樹脂管の外周面に係
合する鋸刃形の爪が形成された係合部材を設け、該締付
リングを前記接合用フランジにボルトで締付することに
より合成樹脂管の開口端縁を前記テーパ筒部の挿入によ
り拡径させ、該開口端縁の外周面を前記剛性リングの内
周面に密着させてなることを特徴とする。また本発明は
上記フランジの固着構造において、テーパ筒部の基部外
周に弾性パッキンを外嵌するとともに、合成樹脂管の開
口端縁の内周を面取したことを特徴とする。また本発明
は上記フランジの固着構造において、係合部材を締付リ
ングと一体に形成したことを特徴とする。To this end, according to the present invention, the outer peripheral surface is tapered so that its tip can enter the inside of the opening end of the synthetic resin pipe at the inner peripheral edge of the joining flange. The cylindrical portion is integrally projected, and the rigid ring is loosely fitted to the outer periphery of the opening end edge of the synthetic resin pipe, and at least 2
An engaging member having saw blade-shaped claws that engage with the outer peripheral surface of the synthetic resin pipe is provided on the inner circumference of the divided tightening ring, and the tightening ring is tightened to the joining flange with a bolt. Thus, the opening end edge of the synthetic resin pipe is expanded by inserting the tapered cylindrical portion, and the outer peripheral surface of the opening end edge is brought into close contact with the inner peripheral surface of the rigid ring. Further, the present invention is characterized in that, in the above-mentioned flange fixing structure, an elastic packing is externally fitted to the outer periphery of the base of the tapered cylindrical portion, and the inner periphery of the opening edge of the synthetic resin pipe is chamfered. Further, the present invention is characterized in that, in the above-mentioned flange fixing structure, the engaging member is formed integrally with the tightening ring.
【０００５】[0005]
【発明の実施の形態】次に本発明の実施の形態を図面と
共に説明する。図１は本発明により接合用フランジが固
着された合成樹脂管の外観斜視図、図２はその縦断面
図、図３は図２のＡ−Ａ線断面図、図４は分解斜視図で
ある。図中、１は合成樹脂管（ポリエチレン管）、２は
外周寄りに接合用ボルト（図示せず）を貫挿するための
透孔３ａ〜３ｄが形成された鋼材製の接合用フランジ、
４は鋼材製の剛性リング、５ａ，５ｂは２分割された合
成樹脂製の締付リング、６ａ，６ｂは２分割された鋼材
製の係合部材、７ａ〜７ｄは締付用ボルト、８は弾性パ
ッキン（Ｏリング）である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of a synthetic resin pipe having a joining flange fixed thereto according to the present invention, FIG. 2 is a longitudinal sectional view thereof, FIG. 3 is a sectional view taken along the line AA of FIG. 2, and FIG. 4 is an exploded perspective view. . In the drawing, 1 is a synthetic resin pipe (polyethylene pipe), 2 is a steel-made joining flange in which through holes 3a to 3d for inserting joining bolts (not shown) are formed near the outer periphery,
4 is a rigid ring made of steel, 5a and 5b are tightening rings made of synthetic resin divided into two, 6a and 6b are engaging members made of steel divided into two, 7a to 7d are tightening bolts, and 8 is Elastic packing (O-ring).
【０００６】接合用フランジ２の内周縁には、先端が合
成樹脂管１の開口端縁の内側に入り得るように外周面が
１０〜１５°のテーパ状に先細に形成されたテーパ筒部
９が一体に突設され、該テーパ筒部９の基部外周には前
記弾性パッキンを外嵌し得る周溝１０が形成される。な
お、１１ａ〜１１ｄは該接合用フランジ２のテーパ筒部
突設側に穿設された螺子孔である。上記剛性リング４は
合成樹脂管１の開口端縁の外周に遊嵌されるもので、そ
の内周面１２を１０〜１５°のテーパ状に形成してい
る。また、締付リング５ａ，５ｂは、内周面に剛性リン
グ４を包持し得る溝１３と係合部材６ａ，６ｂを止着す
るための溝１４が形成され、軸方向には締付用ボルト７
ａ〜７ｄを貫挿するための透孔１５ａ〜１５ｄが形成さ
れているほか、両端部に周方向の透孔１６ａ，１６ｂが
形成され、これに締付用ボルト１７ａ，１７ｂを貫挿し
ナット２０ａ，２０ｂを締付することによりこの２分割
された締付リング５ａ，５ｂを合着し得る。また、係合
部材６ａ，６ｂの内周面には合成樹脂管１の外周面に係
合する鋸刃形の爪１８が形成されている。At the inner peripheral edge of the joining flange 2, the outer peripheral surface is tapered to a taper shape of 10 to 15 ° so that the tip can enter the inside of the opening end edge of the synthetic resin pipe 1. Are formed integrally with each other, and a peripheral groove 10 into which the elastic packing can be fitted is formed on the outer periphery of the base of the tapered cylindrical portion 9. Note that 11a to 11d are screw holes formed on the protruding side of the joining flange 2 of the tapered cylindrical portion. The rigid ring 4 is loosely fitted to the outer periphery of the opening edge of the synthetic resin pipe 1, and the inner peripheral surface 12 thereof is formed in a tapered shape of 10 to 15 °. Further, the tightening rings 5a and 5b are formed with a groove 13 capable of enclosing the rigid ring 4 and a groove 14 for fixing the engaging members 6a and 6b on the inner peripheral surface thereof, so that the tightening rings 5a and 5b can be tightened in the axial direction. Bolt 7
Through holes 15a to 15d for inserting a to 7d are formed, and circumferential through holes 16a and 16b are formed at both ends, and tightening bolts 17a and 17b are inserted into the nuts 20a. , 20b, the two tightening rings 5a, 5b can be joined together. Further, saw blade-shaped claws 18 that engage with the outer peripheral surface of the synthetic resin pipe 1 are formed on the inner peripheral surfaces of the engaging members 6a and 6b.
【０００７】そこで、合成樹脂管１の開口端縁に接合用
フランジ２を固着するに際しては、該合成樹脂管１の開
口端縁の内周１９を約４５°に面取し、周溝１０に弾性
パッキン８を外嵌し、該開口端縁の内側に該接合用フラ
ンジ２のテーパ筒部９の先端を挿入するとともに、該合
成樹脂管１の開口端縁の外周に剛性リング４を遊嵌し、
その背後に締付リング５ａ，５ｂを締付用ボルト１７
ａ，１７ｂにより合着させて係合部材６ａ，６ｂの爪１
８を該合成樹脂管１の外周面に係合させ、透孔１５ａ〜
１５ｄに貫挿した締付用ボルト７ａ〜７ｄを螺子孔１１
ａ〜１１ｄに螺合締付することにより、該合成樹脂管の
開口端縁を該テーパ筒部９の外周面に沿って拡径させ、
該開口端縁の外周面を剛性リング４の内周面１２に密着
させる。なお、このとき開口端縁の内周１９は弾性パッ
キン８に密着する。Therefore, when the joining flange 2 is fixed to the opening edge of the synthetic resin pipe 1, the inner circumference 19 of the opening end of the synthetic resin pipe 1 is chamfered at about 45 ° and the circumferential groove 10 is formed. The elastic packing 8 is externally fitted, the tip of the tapered cylindrical portion 9 of the joining flange 2 is inserted inside the opening edge, and the rigid ring 4 is loosely fitted around the opening edge of the synthetic resin pipe 1. Then
Behind it, tighten the tightening rings 5a and 5b with the tightening bolts 17
The claw 1 of the engaging members 6a and 6b is made to adhere by a and 17b.
8 is engaged with the outer peripheral surface of the synthetic resin pipe 1, and the through holes 15a ...
Tightening bolts 7a to 7d inserted into 15d are screw holes 11
By screwing to a to 11d, the opening end edge of the synthetic resin pipe is expanded along the outer peripheral surface of the tapered cylindrical portion 9,
The outer peripheral surface of the opening edge is brought into close contact with the inner peripheral surface 12 of the rigid ring 4. At this time, the inner circumference 19 of the opening edge is in close contact with the elastic packing 8.
【０００８】このように、ボルト７ａ〜７ｄを締付しテ
ーパ筒部９を合成樹脂管１の開口端縁内に進入させるこ
とで該開口端縁は該テーパ筒部９と剛性リング４に挟着
されることから、高水圧が掛かっても水漏れのおそれな
く、高度な密封性能を持ち得る。As described above, the bolts 7a to 7d are tightened to allow the tapered cylindrical portion 9 to enter the opening end edge of the synthetic resin pipe 1, so that the opening end edge is sandwiched between the tapered cylindrical portion 9 and the rigid ring 4. Since it is worn, even if a high water pressure is applied, there is no fear of water leakage, and high sealing performance can be achieved.
【０００９】なおこの実施形態では、締付リング５ａ，
５ｂを合成樹脂製としたために係合部材６ａ，６ｂを別
体に形成したが、締付リング５ａ，５ｂを鋼材製とした
場合にはその内周面に係合用の鋸刃形爪等を一体に形成
してもよい。In this embodiment, the tightening rings 5a,
The engaging members 6a and 6b are formed separately because 5b is made of synthetic resin. However, when the tightening rings 5a and 5b are made of steel, a saw blade claw for engagement is provided on the inner peripheral surface thereof. You may form integrally.
【００１０】一方、図５は本発明の他の実施形態を示す
もので、この実施形態では、接合用フランジ２を介して
合成樹脂管１ａと合成樹脂管１ｂとを接合するべく、該
フランジ２の両側にテーパ筒部９ａ，９ｂを一体に形成
し、該各合成樹脂管１ａ,１ｂの外周に前記と同様に剛
性リング４，締付リング５ａ，５ｂ等を設け、該フラン
ジ２に貫挿した締付用ボルト２１とナット２２を締付す
ることにより、該各合成樹脂管の開口端縁を該テーパ筒
部９ａ，９ｂの外周面に沿って拡径させ密着させたもの
である。その他、図２と同一符号は同一部分を示す。こ
れによって合成樹脂管どうしを簡単に接合することもで
きる。On the other hand, FIG. 5 shows another embodiment of the present invention. In this embodiment, in order to join the synthetic resin pipe 1a and the synthetic resin pipe 1b through the joining flange 2, the flange 2 Taper tube portions 9a, 9b are integrally formed on both sides of the same, and a rigid ring 4, a tightening ring 5a, 5b, etc. are provided on the outer periphery of each synthetic resin pipe 1a, 1b in the same manner as described above, and are inserted into the flange 2. By tightening the tightening bolts 21 and the nuts 22, the opening end edges of the synthetic resin pipes are expanded in diameter along the outer peripheral surfaces of the tapered cylindrical portions 9a and 9b to be in close contact with each other. In addition, the same reference numerals as those in FIG. 2 indicate the same parts. This allows the synthetic resin pipes to be easily joined together.
【００１１】[0011]
【発明の効果】このように本発明では、合成樹脂管の開
口端に接合用フランジをボルトを締付するだけで簡単に
しかも強固で高度な密封性能をもって固着することがで
きるので、配管現場での工事が簡略化され、コストを大
幅に軽減し得る有益な効果がある。As described above, according to the present invention, it is possible to easily and firmly secure the joint flange to the open end of the synthetic resin pipe by tightening the bolt with a high degree of sealing performance. The construction is simplified and there is a beneficial effect that the cost can be greatly reduced.
【図１】本発明に係るフランジの固着構造の実施形態を
示す外観斜視図。FIG. 1 is an external perspective view showing an embodiment of a flange fixing structure according to the present invention.
【図２】本発明に係るフランジの固着構造の実施形態を
示す縦断面図。FIG. 2 is a longitudinal sectional view showing an embodiment of a fixing structure for a flange according to the present invention.
【図３】図２のＡ−Ａ線断面図。3 is a sectional view taken along the line AA of FIG.
【図４】本発明に係るフランジの固着構造の実施形態を
示す分解斜視図。FIG. 4 is an exploded perspective view showing an embodiment of a flange fixing structure according to the present invention.
【図５】本発明に係るフランジの固着構造の他の実施形
態を示す縦断面図。FIG. 5 is a vertical cross-sectional view showing another embodiment of a flange fixing structure according to the present invention.
１ 合成樹脂管 ２ 接合用フランジ ４ 剛性リング ５ａ，５ｂ 締付リング ６ａ，６ｂ 係合部材 ７ａ〜７ｄ 締付用ボルト ８ 弾性パッキン ９ テーパ筒部 １０ 周溝 １１ａ〜１１ｄ 螺子孔 １２ 内周面 １５ａ〜１５ｄ 透孔 １６ａ，１６ｂ 透孔 １７ａ，１７ｂ 締付用ボルト １８ 爪 １９ 内周 1 synthetic resin tube 2 Flange for joining 4 Rigid ring 5a, 5b Tightening ring 6a, 6b Engagement member 7a to 7d Tightening bolt 8 Elastic packing 9 Tapered tube 10 circumferential grooves 11a to 11d screw holes 12 Inner surface 15a to 15d through hole 16a, 16b through hole 17a, 17b Tightening bolt 18 nails 19 inner circumference
Claims (3)
脂管の開口端縁の内側に入り得るように外周面がテーパ
状に先細に形成されたテーパ筒部を一体に突設し、剛性
リングを合成樹脂管の開口端縁の外周に遊嵌するととも
に、少なくとも２分割された締付リングの内周に合成樹
脂管の外周面に係合する鋸刃形の爪が形成された係合部
材を設け、該締付リングを前記接合用フランジにボルト
で締付することにより合成樹脂管の開口端縁を前記テー
パ筒部の挿入により拡径させ、該開口端縁の外周面を前
記剛性リングの内周面に密着させてなることを特徴とし
た合成樹脂管を接合するためのフランジの固着構造。1. A rigidity is provided by integrally projecting a tapered cylindrical portion having a tapered outer peripheral surface on the inner peripheral edge of the joining flange so that the tip can enter the inside of the opening edge of the synthetic resin pipe. Engagement in which a ring is loosely fitted to the outer periphery of the opening end edge of the synthetic resin pipe, and a saw-toothed claw that engages with the outer peripheral surface of the synthetic resin pipe is formed on the inner periphery of at least two tightening rings. A member is provided, and by tightening the tightening ring to the joining flange with a bolt, the opening end edge of the synthetic resin pipe is expanded by inserting the tapered cylindrical portion, and the outer peripheral surface of the opening end edge is made to have the rigidity. A fixing structure for a flange for joining a synthetic resin pipe, which is characterized in that it is closely attached to the inner peripheral surface of the ring.
外嵌するとともに、合成樹脂管の開口端縁の内周を面取
した請求項１に記載の合成樹脂管を接合するためのフラ
ンジの固着構造。2. A flange for joining a synthetic resin pipe according to claim 1, wherein an elastic packing is externally fitted to the outer periphery of the base of the tapered cylindrical portion, and the inner periphery of the opening edge of the synthetic resin pipe is chamfered. Fixed structure.
請求項１または２に記載の合成樹脂管を接合するための
フランジの固着構造。3. A flange fixing structure for joining a synthetic resin pipe according to claim 1, wherein the engaging member is formed integrally with the tightening ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001266166A JP2003074773A (en) | 2001-09-03 | 2001-09-03 | Flange fixing structure for connecting synthetic resin pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001266166A JP2003074773A (en) | 2001-09-03 | 2001-09-03 | Flange fixing structure for connecting synthetic resin pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003074773A true JP2003074773A (en) | 2003-03-12 |
Family
ID=19092508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001266166A Pending JP2003074773A (en) | 2001-09-03 | 2001-09-03 | Flange fixing structure for connecting synthetic resin pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003074773A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107758A (en) * | 2019-05-22 | 2019-08-09 | 许吉界 | A kind of steel flange |
| KR20210113724A (en) * | 2020-03-09 | 2021-09-17 | 주식회사 포스코 | Hot material transfer pipe |
-
2001
- 2001-09-03 JP JP2001266166A patent/JP2003074773A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107758A (en) * | 2019-05-22 | 2019-08-09 | 许吉界 | A kind of steel flange |
| KR20210113724A (en) * | 2020-03-09 | 2021-09-17 | 주식회사 포스코 | Hot material transfer pipe |
| KR102391060B1 (en) | 2020-03-09 | 2022-04-28 | 주식회사 포스코 | Hot material transfer pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20040203 |