JPH11101378A - Connection structure of ribbed pipe - Google Patents
Connection structure of ribbed pipeInfo
- Publication number
- JPH11101378A JPH11101378A JP9267073A JP26707397A JPH11101378A JP H11101378 A JPH11101378 A JP H11101378A JP 9267073 A JP9267073 A JP 9267073A JP 26707397 A JP26707397 A JP 26707397A JP H11101378 A JPH11101378 A JP H11101378A
- Authority
- JP
- Japan
- Prior art keywords
- rubber ring
- pipe
- rib
- ribs
- tube
- 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.)
- Withdrawn
Links
Landscapes
- Joints That Cut Off Fluids, And Hose Joints (AREA)
- Joints Allowing Movement (AREA)
Abstract
(57)【要約】
【課題】リブ付管をゴム輪を介して挿入方式で接続する
場合、接続部の可撓性を増大するためにゴム輪の高さを
リブ高さに対してかなり高くしても、ゴム輪による接続
部のシ−ル性を充分に保証できるリブ付管の接続構造を
提供する。
【解決手段】外周に環状リブ１１を有する管挿口１に、
内面に環状スリット若しくは溝２１を有するゴム輪２を
その環状スリット若しくは溝２１を環状リブ１１に嵌合
して装着し、該ゴム輪装着管挿口を相手管端部３内に挿
入した。
(57) [Summary] [PROBLEMS] When connecting a tube with ribs by an insertion method via a rubber ring, the height of the rubber ring is considerably higher than the rib height in order to increase the flexibility of the connecting portion. Even so, there is provided a connection structure for a tube with ribs that can sufficiently guarantee the sealing property of the connection portion by a rubber ring. A pipe insertion port having an annular rib on an outer periphery is provided.
A rubber ring 2 having an annular slit or groove 21 on its inner surface was fitted by fitting the annular slit or groove 21 to the annular rib 11, and the rubber ring-fitting tube opening was inserted into the end 3 of the mating tube.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は外周面に環状リブを
有するリブ付管の接続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 connection structure for a tube with ribs having an annular rib on an outer peripheral surface.
【０００２】[0002]
【従来の技術】管外周面に環状リブを長手方向に一定の
間隔で形成したリブ付管においては、そのリブの補強効
果のために耐圧潰性に優れ、特に、下水管やケ−ブル保
護管等の地中埋設管として使用されている。従来、この
リブ付管を接続するには、図６の（イ）に示すように、
管挿口外周面のリブ１１’，１１’間にゴム輪２’を装
着し、このゴム輪装着挿口を管受口１３’に挿入して受
口内面でゴム輪２’を圧縮している。2. Description of the Related Art A ribbed pipe in which annular ribs are formed at regular intervals in the longitudinal direction on the outer peripheral surface of the pipe has excellent pressure-resistant crushability due to the reinforcing effect of the ribs, and in particular, protects sewer pipes and cables. It is used as an underground pipe such as a pipe. Conventionally, to connect this ribbed tube, as shown in FIG.
A rubber ring 2 'is mounted between the ribs 11' and 11 'on the outer peripheral surface of the pipe insertion port, and the rubber ring mounting port is inserted into the pipe receiving port 13' to compress the rubber ring 2 'on the inner surface of the receiving port. I have.
【０００３】周知の通り、地中埋設管路においては、地
盤沈下や地震時に過大な曲げ応力を発生して曲げ破断を
生じることのないように、管接続部に可撓性を付与する
ことが有効である。而して、上記のリブ付管接続部の可
撓性を高めるには、受口内径を大きくしてその受口内面
と挿口のリブ外周とのクリアランスを大きくし、ゴム輪
を支点としての接続部の傾動可能な角度を大きくするこ
とが有効である。[0003] As is well known, in underground pipes, it is necessary to provide flexibility to pipe connections so as not to generate excessive bending stress due to land subsidence or earthquake and to cause bending fracture. It is valid. Therefore, in order to increase the flexibility of the above-mentioned ribbed pipe connecting portion, the inner diameter of the receiving port is increased to increase the clearance between the inner surface of the receiving port and the outer periphery of the rib of the insertion port, and the rubber ring is used as a fulcrum. It is effective to increase the tiltable angle of the connecting portion.
【０００４】[0004]
【発明が解決しようとする課題】上記のゴム輪装着挿口
を受口内に挿入する際、図６の（ロ）に示すように、受
口内面１３１’との摩擦でゴム輪２’の外面に作用する
力Ｆに対しゴム輪２’のリブ係止部位ｐ’が支点として
働き、ゴム輪２’に転倒モ−メントｍ’が作用する。As shown in FIG. 6 (b), when the rubber ring mounting slot is inserted into the socket, the outer surface of the rubber ring 2 'is formed by friction with the inner surface 131' of the socket. The rib locking portion p 'of the rubber ring 2' acts as a fulcrum against the force F acting on the rubber ring 2 ', and a falling moment m' acts on the rubber ring 2 '.
【０００５】而るに、受口内径を大きくするとリブ高さ
に対しゴム輪の高さがますます高くなり、その転倒モ−
メントｍ’が大きくなるため、ゴム輪２’の転倒による
シ−ル性低下が懸念される。かかる不都合は、口径差の
大きい異径リブ付管を上記ゴム輪方式により接続する場
合も、同様に生じる問題である。However, when the inner diameter of the receiving port is increased, the height of the rubber ring is further increased with respect to the height of the rib.
Since the size of the m 'increases, there is a concern that the sealing performance may be reduced due to the falling of the rubber ring 2'. Such inconvenience is also a problem that occurs when a pipe with a different diameter rib having a large diameter difference is connected by the rubber ring method.
【０００６】本発明の目的は、リブ付管をゴム輪を介し
挿入方式で接続する場合、接続部の可撓性を増大するた
めにゴム輪の高さをリブ高さに対してかなり高くして
も、ゴム輪による接続部のシ−ル性を充分に保証できる
リブ付管の接続構造を提供することにある。[0006] An object of the present invention is to increase the height of the rubber ring with respect to the rib height in order to increase the flexibility of the connecting portion when the ribbed tube is connected by an insertion method via a rubber ring. In particular, it is an object of the present invention to provide a connection structure for a pipe with a rib, which can sufficiently guarantee the sealing property of a connection portion by a rubber ring.
【０００７】[0007]
【課題を解決するための手段】本発明に係るリブ付管の
接続構造は、外周に環状リブを有する管挿口に、内面に
環状スリット若しくは溝を有するゴム輪をその環状スリ
ット若しくは溝を環状リブに嵌合して装着し、該ゴム輪
装着管挿口を相手管端部内に挿入したことを特徴とする
構成である。According to the present invention, there is provided a connection structure for a tube with ribs, wherein a rubber ring having an annular slit or groove on the inner surface is formed in a tube insertion opening having an annular rib on the outer periphery. It is characterized in that it is fitted and mounted on a rib, and the rubber ring-mounted pipe insert is inserted into the end of the mating pipe.
【０００８】[0008]
【発明の実施の形態】以下、図面を参照しつつ本発明の
実施の形態について説明する。図１は本発明に係るリブ
付管の接続構造の一例を示している。図１において、１
は外周面に環状リブ１１を長手方向に一定の間隔で形成
したリブ付管１０の挿口であり、リブ付管１０として
は、プラスチック管（例えば、ポリ塩化ビニル管、ポリ
エチレン管等）の外、金属管の使用も可能である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of a connection structure for a tube with ribs according to the present invention. In FIG. 1, 1
Is an opening of a ribbed pipe 10 having annular ribs 11 formed at regular intervals in the longitudinal direction on the outer peripheral surface. The ribbed pipe 10 is formed of a plastic pipe (for example, a polyvinyl chloride pipe, a polyethylene pipe, or the like). Also, the use of a metal tube is possible.
【０００９】２は管挿口１の外面に装着したゴム輪であ
り、内面に環状スリット若しくは溝２１を有し、この環
状スリット若しくは溝２１を環状リブ１１に嵌合してあ
る。この環状スリット若しくは溝２１の深さは環状リブ
１１の高さにほぼ等しくしてある。このゴム輪２の材質
としては、天然ゴム、ブチルゴム、エチレン・プロピレ
ンゴム等を使用できる。Reference numeral 2 denotes a rubber ring mounted on the outer surface of the tube insertion port 1, having an annular slit or groove 21 on the inner surface. The annular slit or groove 21 is fitted to the annular rib 11. The depth of the annular slit or groove 21 is substantially equal to the height of the annular rib 11. The rubber ring 2 may be made of natural rubber, butyl rubber, ethylene / propylene rubber, or the like.
【００１０】３は相手管端部を示し、ゴム輪装着管挿口
を挿入してあり、この相手管端部３の内径と管挿口１の
リブ１１の外径との差をΔｈで示してある。勿論、この
相手管端部３の内径に較べて上記ゴム輪２の外径を大と
してあり、その差はΔｔとする。上記において、ゴム輪
装着管挿口の相手管端部内への挿入時、ゴム輪がこのΔ
ｔを圧縮代として圧縮され、この圧縮力に比例した摩擦
力がゴム輪外面に作用し、この摩擦力及びゴム輪の高さ
に比例した転倒モ−メントがゴム輪に作用する。Reference numeral 3 denotes an end of the mating pipe, into which a rubber ring-fitted pipe mouth is inserted. The difference between the inner diameter of the mating pipe end 3 and the outer diameter of the rib 11 of the pipe mouth 1 is indicated by Δh. It is. Of course, the outer diameter of the rubber ring 2 is larger than the inner diameter of the counter tube end 3, and the difference is Δt. In the above, when the rubber ring-fitting tube insertion is inserted into the end of the mating tube, the rubber ring
t is used as a compression allowance, and a frictional force proportional to the compression force acts on the outer surface of the rubber ring, and a falling moment proportional to the frictional force and the height of the rubber ring acts on the rubber ring.
【００１１】而るに、ゴム輪２に内面側からリブ１１を
埋入してあるから、リブ１１がアンカ−として作用して
ゴム輪２の固定強度を強固にでき、かつ転倒モ−メント
Ｍ（曲げモ−メント）に対しリブ１１が補強芯として作
用してゴム輪の曲げ剛性も高くされている結果、ゴム輪
２の転倒及び変形をよく防止できる。而して、（１）ゴ
ム輪の高さを高くし、また（２）ゴム輪の圧縮代を大き
くしても、ゴム輪に充分なシ−ル性を奏させ得、（１）
のために、接続部の傾動可能角を増して可撓性を向上で
き、（２）のために、シ−ル性を保証できる。Since the ribs 11 are embedded in the rubber ring 2 from the inner side, the ribs 11 act as anchors so that the fixing strength of the rubber ring 2 can be increased, and the falling moment M The rib 11 acts as a reinforcing core for (bending moment) and the bending rigidity of the rubber ring is also increased, so that the rubber ring 2 can be well prevented from falling and deforming. Thus, even if (1) the height of the rubber ring is increased, and (2) the compression allowance of the rubber ring is increased, the rubber ring can exhibit sufficient sealing properties.
Therefore, the tilting angle of the connecting portion can be increased to improve the flexibility, and (2) the sealability can be guaranteed.
【００１２】従って、地盤の不等沈下や地震時での曲げ
モ−メントを接続部の傾動で吸収して曲げ破損を防止し
得、その後も、良好なシ−ル性の保持で管路を本来の用
途（下水管路、電力ケ−ブルや通信ケ−ブルの地中埋設
管路）で支障なく継続使用できる。なお、上記の実施形
態では、ゴム輪の内周を１個のリブに嵌合しているが、
図２に示すように、ゴム輪の内周面に複数本（図では２
本）の環状スリット若しくは溝２１を設け、これらの環
状スリット若しくは溝２１によりゴム輪２の内周面を複
数個（図では２個）のリブ１１に嵌合することもでき
る。Therefore, bending moments caused by uneven settlement of the ground or an earthquake can be absorbed by tilting of the connecting portion to prevent bending damage, and thereafter, the pipeline can be maintained by maintaining good sealing properties. It can be continuously used without any problems in its intended use (underground pipes for sewage pipes, electric power cables and communication cables). In the above embodiment, the inner circumference of the rubber ring is fitted to one rib.
As shown in FIG. 2, a plurality of rubber rings (in FIG.
The annular slits or grooves 21 are provided, and the inner peripheral surface of the rubber ring 2 can be fitted to a plurality of (two in the figure) ribs 11 by these annular slits or grooves 21.
【００１３】また、ゴム輪２の外周面は図３の（イ）に
示すような山形、または図３の（ロ）に示すような谷形
とすることも可能である。また、管挿口のリブヘのゴム
輪の環状スリット若しくは溝の嵌合位置は、挿口先端か
ら２番目のリブとし、最前のリブはゴム輪前面のガ−ド
として使用することが好ましい（３番目以降のリブでは
ゴム輪の装着がやや困難になる）。Further, the outer peripheral surface of the rubber ring 2 may have a mountain shape as shown in FIG. 3A or a valley shape as shown in FIG. It is preferable that the annular slit or groove of the rubber ring is fitted to the rib of the pipe insertion port at the second rib from the front end of the insertion port, and the frontmost rib is used as a guard on the front face of the rubber ring (3). The mounting of the rubber ring is slightly more difficult on the ribs after the th).
【００１４】本発明は、図１に示すように異径のリブ付
管（例えば、口径３００ｍｍのリブ付管と口径２５０ｍ
ｍのリブ付管）の接続の外、図４に示すように、同径の
リブ付管１０，１０の接続にも使用できる。図４におい
て、１はリブ付管の挿口、１３はリブ付管の拡径受口、
２は内周面の環状スリット若しくは溝２１をリブ１１に
嵌合したゴム輪である。As shown in FIG. 1, the present invention relates to a pipe with a different diameter (for example, a pipe with a diameter of 300 mm and a pipe with a diameter of 250 m).
In addition to the connection of the ribbed tubes (m), as shown in FIG. In FIG. 4, 1 is an insertion opening of a ribbed tube, 13 is an enlarged-diameter receiving opening of a ribbed tube,
Reference numeral 2 denotes a rubber ring in which an annular slit or groove 21 on the inner peripheral surface is fitted to the rib 11.
【００１５】また、本発明は、図５に示すようにマンホ
−ル壁４に取付けた接続用短管３にリブ付下水管１０を
接続する場合にも適用できる。図５において、２は内周
面の環状スリット若しくは溝２１をリブ１１に嵌合した
ゴム輪である。上記マンホ−ルにおいては、厳重な基礎
工のうえに設置してあるから安定であるが、マンホ−ル
周辺の地盤が軟弱であると、マンホ−ルと周辺地盤との
間で不等沈下が生じ易く、この場合、接続部への曲げモ
−メントの作用が避けられない。しかし、本発明に係る
接続構造においては、傾動可能角が大きく、曲げモ−メ
ントをよく吸収できるから、かかる不等沈下にもかかわ
らず、接続部を安定に保持できる。The present invention can also be applied to a case where a ribbed sewer pipe 10 is connected to a connecting short pipe 3 mounted on a manhole wall 4 as shown in FIG. In FIG. 5, reference numeral 2 denotes a rubber ring in which an annular slit or groove 21 on the inner peripheral surface is fitted to the rib 11. The above-mentioned manhole is stable because it is installed on strict foundation work, but if the ground around the manhole is soft, uneven settlement between the manhole and the surrounding ground will occur. This is likely to occur, in which case the action of bending moment on the connection is unavoidable. However, in the connection structure according to the present invention, since the tiltable angle is large and the bending moment can be well absorbed, the connection portion can be stably held despite such uneven settlement.
【００１６】[0016]
〔実施例〕図１の接続構造を使用して、口径２５０ｍｍ
φの塩化ビニル樹脂製リブ付管を口径３００ｍｍφの塩
化ビニル樹脂製リブ付管に挿入接続し、ゴム輪の環状ス
リット若しくは溝数を１個としこの１個の環状スリット
若しくは溝を１個のリブに嵌合し、ゴム輪の圧縮代を２
０％としたところ、ゴム輪の転倒は生じなかった。[Embodiment] The connection structure shown in FIG.
A pipe with a vinyl chloride resin rib of φ is inserted and connected to a pipe with a rib of vinyl chloride resin with a diameter of 300 mm, and the number of annular slits or grooves of the rubber ring is set to one and this one annular slit or groove is connected to one rib. And the compression allowance of the rubber ring is 2
At 0%, the rubber ring did not fall.
【００１７】〔比較例〕実施例に対し、ゴム輪に環状ス
リット若しくは溝を設けず、リブ間にゴム輪を装着した
以外は実施例と同様にして挿入接続したところ、ゴム輪
の転倒が観られた。更に、両接続部について、曲げ角４
°〜６°で曲げ、水圧３．０ｋｇ／ｃｍ2で内圧試験を
行ったところ、比較例では水漏れが観察されたが、実施
例での水漏れは認められなかった。COMPARATIVE EXAMPLE The rubber ring was inserted and connected in the same manner as in the example except that the rubber ring was not provided with an annular slit or groove and the rubber ring was attached between the ribs. Was done. Further, the bending angle of each connection portion is 4
When an internal pressure test was performed at a water pressure of 3.0 kg / cm 2 by bending at an angle of 6 ° to 6 °, water leakage was observed in the comparative example, but no water leakage was observed in the example.
【００１８】[0018]
【発明の効果】本発明に係るリブ付管の接続構造によれ
ば、管挿口のリブ高さに対しゴム輪の高さを相当に高く
しても、リブ付管挿口を相手管端部に挿入する際でのゴ
ム輪の転倒を防止でき、良好なシ−ル性を保証できる。
而して、ゴム輪の高さを高くし管挿口のリブ外周と相手
管端部の内周とのクリアランスを大きくすることにより
接続部の可撓性を向上し、地盤沈下時での曲げモ−メン
トを接続部の傾動で吸収して管路を安定に維持できる。According to the ribbed pipe connection structure of the present invention, even if the height of the rubber ring is considerably higher than the rib height of the pipe insertion port, the ribbed pipe insertion port can be connected to the mating pipe end. The rubber ring can be prevented from tipping over when it is inserted into the part, and good sealing properties can be guaranteed.
Thus, by increasing the height of the rubber ring and increasing the clearance between the outer periphery of the rib of the pipe insertion port and the inner circumference of the end of the mating pipe, the flexibility of the connection part is improved, and bending at the time of ground subsidence is achieved. Moment is absorbed by the tilting of the connecting portion, so that the pipeline can be maintained stably.
【図１】本発明に係るリブ付管の接続構造の一例を示す
図面である。FIG. 1 is a drawing showing an example of a connection structure for a pipe with ribs according to the present invention.
【図２】本発明に係るリブ付管の接続構造の上記とは別
の例の要部を示す図面である。FIG. 2 is a view showing a main part of another example of the connection structure for a pipe with ribs according to the present invention, which is different from the above.
【図３】本発明に係るリブ付管の接続構造の上記とは別
の異なる例の要部を示す図面である。FIG. 3 is a drawing showing a main part of a different example of the connection structure for a pipe with ribs according to the present invention, which is different from the above.
【図４】本発明に係るリブ付管の接続構造の上記とは別
の例を示す図面である。FIG. 4 is a drawing showing another example of the connection structure of the pipe with ribs according to the present invention.
【図５】本発明に係るリブ付管の接続構造の上記とは別
の例を示す図面である。FIG. 5 is a drawing showing another example of the connection structure for a pipe with ribs according to the present invention.
【図６】従来例を示す図面である。FIG. 6 is a drawing showing a conventional example.
１ リブ付管挿口 １０ リブ付管 １１ リブ ２ ゴム輪 ２１ 環状スリット若しくは溝 ３ 相手管端部 DESCRIPTION OF SYMBOLS 1 Pipe insertion with a rib 10 Pipe with a rib 11 Rib 2 Rubber ring 21 Annular slit or groove 3 End of mating pipe
Claims (1)
環状スリット若しくは溝を有するゴム輪をその環状スリ
ット若しくは溝を環状リブに嵌合して装着し、該ゴム輪
装着管挿口を相手管端部内に挿入したことを特徴とする
リブ付管の接続構造。A rubber ring having an annular slit or groove on its inner surface is fitted into a tube insertion opening having an annular rib on its outer periphery by fitting said annular slit or groove into said annular rib, and said rubber ring-attached tube insertion opening. A connection structure for a pipe with ribs, wherein the pipe is inserted into the end of the mating pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9267073A JPH11101378A (en) | 1997-09-30 | 1997-09-30 | Connection structure of ribbed pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9267073A JPH11101378A (en) | 1997-09-30 | 1997-09-30 | Connection structure of ribbed pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11101378A true JPH11101378A (en) | 1999-04-13 |
Family
ID=17439660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9267073A Withdrawn JPH11101378A (en) | 1997-09-30 | 1997-09-30 | Connection structure of ribbed pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11101378A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010230145A (en) * | 2009-03-30 | 2010-10-14 | Mitsubishi Plastics Inc | Method for connecting ribbed pipe, pipe and bending prevention ring used therefor |
| JP2016070390A (en) * | 2014-09-30 | 2016-05-09 | 積水化学工業株式会社 | Underground pipe connection structure |
-
1997
- 1997-09-30 JP JP9267073A patent/JPH11101378A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010230145A (en) * | 2009-03-30 | 2010-10-14 | Mitsubishi Plastics Inc | Method for connecting ribbed pipe, pipe and bending prevention ring used therefor |
| JP2016070390A (en) * | 2014-09-30 | 2016-05-09 | 積水化学工業株式会社 | Underground pipe connection structure |
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