JP2003129508A - Pipe joint - Google Patents
Pipe jointInfo
- Publication number
- JP2003129508A JP2003129508A JP2001330657A JP2001330657A JP2003129508A JP 2003129508 A JP2003129508 A JP 2003129508A JP 2001330657 A JP2001330657 A JP 2001330657A JP 2001330657 A JP2001330657 A JP 2001330657A JP 2003129508 A JP2003129508 A JP 2003129508A
- Authority
- JP
- Japan
- Prior art keywords
- pipe joint
- manhole
- diameter portion
- cylindrical
- pipe
- 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
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、地震等による揺れ
や振動に対して継手機能を損なうことのない優れた安定
性を有する内嵌式の管継手に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal fitting type pipe joint having excellent stability without damaging the joint function against shaking or vibration due to an earthquake or the like.
【0002】[0002]
【従来の技術】従来のマンホールの管継手は、一般にマ
ンホールの側壁にあけた取付孔に外側から先端部を差し
込み、モルタル、エポキシ樹脂系接着剤等の接着材を用
いて、マンホールに接合一体化して取り付け、さらに、
管継手の外周面にフランジがある場合には、このフラン
ジの一側面をマンホールの外壁面に接合一体化させてい
る。2. Description of the Related Art Conventional manhole fittings are generally integrated into the manhole by inserting the tip from the outside into a mounting hole formed in the side wall of the manhole and using an adhesive such as mortar or epoxy resin adhesive. Installation, and
When the outer peripheral surface of the pipe joint has a flange, one side surface of the flange is joined and integrated with the outer wall surface of the manhole.
【0003】[0003]
【発明が解決しようとする課題】しかし、上記管継手
は、マンホールの取付孔に、外側から差し込んで接着材
で取付ける構造であり、その取付強度は、専ら接着材の
接着力に頼るものであるため、地震等による揺れにより
下水管を介して上記管継手にかかる押圧力や振動あるい
は引抜き力に対して、十分な強度があるとは必ずしも言
えず、マンホールの取付部分に管継手を介して接続した
下水管が傾き、管継手との間で継手機能を維持できなく
なったり、管継手自体がマンホールから引抜ける等の危
険がある。本発明は、こうした危険に対応でき、地震等
の揺れや振動に対して継手機能を損なうことのない優れ
た安定性を有する管継手を提供することを目的とする。However, the pipe joint has a structure in which it is inserted into the mounting hole of the manhole from the outside and attached by an adhesive, and the attachment strength depends exclusively on the adhesive force of the adhesive. Therefore, it cannot be said that the product has sufficient strength against the pressing force, vibration, or pulling force applied to the pipe joint through the sewer pipe due to shaking due to an earthquake, etc., and the manhole mounting portion is connected via the pipe joint. There is a risk that the sewer pipe tilts, the joint function cannot be maintained with the pipe joint, and the pipe joint itself pulls out from the manhole. An object of the present invention is to provide a pipe joint that can cope with such a danger and that has excellent stability that does not impair the joint function against shaking or vibration such as an earthquake.
【0004】[0004]
【課題を解決するための手段】上記課題を解決するた
め、本発明の管継手は、従来の管継手とは異なり、マン
ホールの内側から外側に向けて挿着して取付ける内嵌式
とし、管継手のフランジと管継手の一部をマンホールに
接合一体化させるようにしている。すなわち、本発明の
管継手は、下水管を挿着する円筒状本体とフランジ部と
からなり、前記円筒状本体は、先方の円筒状の縮径部と
これに続く同心円筒状の拡径部とからなり、前記縮径部
の先端部近傍の内周面にはシールリングが装着される周
凹溝が設けられ、前記円筒状本体の後方端部にはフラン
ジ部が一体に設けられ、前記円筒状本体の拡径部の外周
面と前記フランジ部の前記円筒状本体側表面とでマンホ
ールに接合一体化させてマンホールに取付ける。また、
前記拡径部の内周面と下水管の外周面との間には、管保
持リングを介挿させる。In order to solve the above problems, the pipe joint of the present invention is different from the conventional pipe joint in that it is an internal fitting type in which the manhole is inserted and attached from the inside to the outside. The flange of the joint and part of the pipe joint are joined and integrated with the manhole. That is, the pipe joint of the present invention is composed of a cylindrical main body into which a sewer pipe is inserted and a flange portion, and the cylindrical main body is a concentric cylindrical expanded portion followed by a cylindrical reduced diameter portion. The inner peripheral surface near the tip of the reduced diameter portion is provided with a circumferential groove in which a seal ring is mounted, and the rear end portion of the cylindrical body is integrally provided with a flange portion, The outer peripheral surface of the enlarged diameter portion of the cylindrical main body and the surface of the flange portion on the cylindrical main body side are joined and integrated with the manhole to be attached to the manhole. Also,
A pipe holding ring is inserted between the inner peripheral surface of the expanded diameter portion and the outer peripheral surface of the sewer pipe.
【0005】[0005]
【発明の実施の形態】以下、本発明の管継手の一実施の
形態を添付図面に基づいて説明する。図1は、本発明の
管継手の一例を示す正面図であり、図2は、図1のA−
A矢視線に沿う断面図である。また、図3は、本発明の
管継手の装着状態を示す模式的断面図である。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the pipe joint of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front view showing an example of the pipe joint of the present invention, and FIG. 2 is A- of FIG.
It is sectional drawing which follows the A arrow line. Further, FIG. 3 is a schematic cross-sectional view showing a mounted state of the pipe joint of the present invention.
【0006】本発明の管継手は、図2に示すように、円
筒状本体1とフランジ部2とからなり、円筒状本体1
は、先方の円筒状の縮径部3とこれに続く同心円筒状の
拡径部4とから構成されている。円筒状本体1の縮径部
3は、図3に示すように、本発明の管継手に挿着される
下水管5を摺動状に受入れて、この縮径部3で下水管5
を支持するようになっている。さらに、縮径部3の先端
部近傍の内周面には、周凹溝6が設けられており、この
周凹溝6にはシールリング7が装着され、このシールリ
ング7により、円筒状本体1とこれに挿着された下水管
5間との止水性(水密性)が保持されるようになってい
る。なお、周凹溝6は、縮径部3の肉厚内で設けられて
も良いし、図示したように、縮径部3の外径を大きくす
るように設けても良い。As shown in FIG. 2, the pipe joint of the present invention comprises a cylindrical main body 1 and a flange portion 2, and the cylindrical main body 1
Is composed of a forward cylindrical reduced-diameter portion 3 and a concentric cylindrical expanded portion 4 following it. As shown in FIG. 3, the reduced diameter portion 3 of the cylindrical main body 1 slidably receives the sewage pipe 5 inserted into the pipe joint of the present invention, and the reduced diameter portion 3 causes the sewage pipe 5 to move.
To support. Further, a peripheral groove 6 is provided on the inner peripheral surface near the tip of the reduced diameter portion 3, and a seal ring 7 is attached to the peripheral groove 6, and by this seal ring 7, a cylindrical main body is formed. Water resistance (watertightness) between 1 and the sewer pipe 5 inserted therein is maintained. The circumferential recessed groove 6 may be provided within the wall thickness of the reduced diameter portion 3, or may be provided so as to increase the outer diameter of the reduced diameter portion 3 as illustrated.
【0007】また、円筒状本体1の拡径部4は、縮径部
3よりも内周径が大きく、かつ縮径部3よりも軸方向に
長く形成されており、この拡径部4では、図3に示すよ
うに、縮径部3で支持された下水管5の外周面と拡径部
4の内周面との間に、一定の間隙8が保持できるように
なっている。なお、図では、円筒状本体1における縮径
部3と拡径部4との軸方向長さは、約1:2の割合で拡
径部4の方を長く形成したものを示したが、これに限定
されるものではなく、適用する下水管の大きさに合わ
せ、1:1〜1:4の範囲の割合で、縮径部3と拡径部
4を形成すると良い。下水管5の外周面と拡径部4の内
周面との間に、一定の間隙8を保持することによって、
地震の揺れ等によって下水管5とマンホール9との連結
部に加わる振動や衝撃、変位を、間隙8により吸収する
ことができる。The expanded diameter portion 4 of the cylindrical main body 1 has an inner diameter larger than that of the reduced diameter portion 3 and is formed longer than the reduced diameter portion 3 in the axial direction. As shown in FIG. 3, a constant gap 8 can be maintained between the outer peripheral surface of the sewer pipe 5 supported by the reduced diameter portion 3 and the inner peripheral surface of the enlarged diameter portion 4. In the figure, the axial length of the reduced diameter portion 3 and the enlarged diameter portion 4 in the cylindrical body 1 is shown to be such that the enlarged diameter portion 4 is formed longer at a ratio of about 1: 2. The present invention is not limited to this, and it is preferable to form the reduced diameter portion 3 and the enlarged diameter portion 4 in a ratio of 1: 1 to 1: 4 according to the size of the sewer pipe to be applied. By maintaining a constant gap 8 between the outer peripheral surface of the sewer pipe 5 and the inner peripheral surface of the expanded diameter portion 4,
The gap 8 can absorb vibrations, impacts, and displacements applied to the connection between the sewer pipe 5 and the manhole 9 due to shaking of the earthquake or the like.
【0008】さらに、間隙8を一定に保持するために、
円筒状本体1の拡径部4の内周面と下水管5の外周面と
の間に、管保持リング10を介挿するようにすると良
い。この管保持リング10は、マンホール9の取付孔1
1に取り付けた本発明の管継手に下水管5を連結するに
際し、円筒状本体1の縮径部3に摺動状に挿通させた下
水管5の外周に嵌着して取り付ける。この管保持リング
10は、間隙8を一定に保持できる硬度と弾力性を有
し、耐久性に優れたものであれば、どのような材質、形
状のものを用いても良い。Further, in order to keep the gap 8 constant,
A pipe holding ring 10 may be inserted between the inner peripheral surface of the expanded diameter portion 4 of the cylindrical main body 1 and the outer peripheral surface of the sewer pipe 5. This tube holding ring 10 is provided with a mounting hole 1 for the manhole 9.
When connecting the sewage pipe 5 to the pipe joint of the present invention attached to No. 1, it is fitted and attached to the outer periphery of the sewage pipe 5 slidably inserted in the reduced diameter portion 3 of the cylindrical main body 1. The tube holding ring 10 may be made of any material and shape as long as it has hardness and elasticity capable of holding the gap 8 constant and has excellent durability.
【0009】なお、本発明の管継手は、図3に示すよう
に、マンホール9の取付孔11に、マンホール9の内側
から外側へ、円筒状本体1を縮径部3から矢印方向に向
けて挿嵌して取付ける内嵌式の構造であるため、縮径部
3の最大外周径は、拡径部4の外周径と同じか、小さく
形成する必要がある。In the pipe joint of the present invention, as shown in FIG. 3, in the mounting hole 11 of the manhole 9, the cylindrical main body 1 is directed from the inside of the manhole 9 to the outside thereof from the reduced diameter portion 3 in the arrow direction. Since it is an internal fitting type structure that is inserted and attached, the maximum outer diameter of the reduced diameter portion 3 must be the same as or smaller than the outer diameter of the enlarged diameter portion 4.
【0010】本発明の管継手のフランジ部2は、円筒状
本体1における拡径部4の後方端部に一体状に設けられ
る。このフランジ部2は、本発明の管継手をマンホール
9にあけた取付孔11に、マンホールの内側から挿着し
て取り付ける際に、フランジ部2の一側面、すなわち、
円筒状本体側の表面12がマンホール9の内壁面に当接
するようになっている。なお、フランジ部2は、単体で
作製して、施工現場で拡径部4の後方端部に接着一体化
させて設けても良く、管継手の製造時に射出成形等によ
り一体成形するようにして設けても良い。The flange portion 2 of the pipe joint of the present invention is integrally provided at the rear end of the expanded diameter portion 4 of the cylindrical main body 1. This flange part 2 is one side surface of the flange part 2, that is, when the pipe joint of the present invention is inserted into the mounting hole 11 formed in the manhole 9 from the inside of the manhole and mounted,
The surface 12 on the side of the cylindrical body contacts the inner wall surface of the manhole 9. Note that the flange portion 2 may be produced as a single body, and may be provided integrally with the rear end portion of the expanded diameter portion 4 at the construction site by adhesion, and may be integrally formed by injection molding or the like when manufacturing the pipe joint. It may be provided.
【0011】本発明の管継手は、マンホール9の取付孔
11に、マンホール9の内側より、円筒状本体1の先方
の縮径部3から拡径部4、さらにはフランジ部2がマン
ホール9の内壁面に当接するまで挿入し、モルタル、エ
ポキシ樹脂系接着剤等の接着材13を用いて、マンホー
ル9に接合一体化させて取り付ける。この接合一体化
は、フランジ部2の円筒状本体側の表面12とマンホー
ル9の内壁面の接合部から、拡径部4の外周面と取付孔
11の内周面の接合部にかけて連続してなされる。In the pipe joint of the present invention, the mandrel 9 has a mounting hole 11 in which the mandrel 9 has a mandrel 9 from the inner side of the manhole 9 to the radially contracted part 3 to the expanded part 4 of the cylindrical body 1. It is inserted until it comes into contact with the inner wall surface, and is attached integrally to the manhole 9 by using an adhesive 13 such as mortar or epoxy resin adhesive. This joining and unification is continuously performed from the joining portion of the surface 12 of the flange portion 2 on the cylindrical body side and the inner wall surface of the manhole 9 to the joining portion of the outer peripheral surface of the enlarged diameter portion 4 and the inner peripheral surface of the mounting hole 11. Done.
【0012】本発明の管継手は、円筒状本体1をマンホ
ール9に取付けると、フランジ部2がマンホール9の取
付孔11の周囲内壁面に当接一体化し係止状態になるた
め、管継手の円筒状本体1の外周面にかかる圧力や、管
継手にかかる外側からの引抜き力により管継手がマンホ
ールの取付孔から外れたり、外側へ抜けることは無い。
また、円筒状本体1の拡径部4の内周面と下水管5の外
周面との間に保持される間隙8は、下水管5の取付後に
生じる地震等による下水管5の揺れ等を吸収するだけで
なく、下水管5に加えられる全方位からの圧力に対し、
縮径部3を支点として間隙8内で下水管の取付角の変位
を吸収することができる。In the pipe joint of the present invention, when the cylindrical main body 1 is attached to the manhole 9, the flange portion 2 comes into contact with the inner wall surface of the attachment hole 11 of the manhole 9 so as to be in a locked state. Due to the pressure applied to the outer peripheral surface of the cylindrical main body 1 and the pulling force applied to the pipe joint from the outside, the pipe joint does not come off the manhole mounting hole or come out to the outside.
Further, the gap 8 held between the inner peripheral surface of the expanded diameter portion 4 of the cylindrical main body 1 and the outer peripheral surface of the sewer pipe 5 prevents the sewer pipe 5 from shaking due to an earthquake or the like occurring after the sewer pipe 5 is attached. Not only absorbing, but also against the pressure applied to the sewer pipe 5 from all directions,
The displacement of the mounting angle of the sewer pipe can be absorbed in the gap 8 with the reduced diameter portion 3 as a fulcrum.
【0013】なお、本発明の管継手において、マンホー
ル9の取付孔11に管継手を取り付けた際、マンホール
9の取付孔11の内周面に当接する円筒状本体1の拡径
部4の外周面から、フランジ部2の円筒状本体側の表面
12にかけて、砂付き加工(図示せず)を施すと、コン
クリート製マンホールとのより強固な水密性に優れた接
合が得られる。また、拡径部4の内周面と下水管5の外
周面との間に介挿させた管保持リング10と、管継手の
フランジ部2の間に生じる凹み14に、モルタル、シー
ラント等を充填して化粧面とするのが好ましい。さら
に、フランジ部にあらかじめ穴をあけておき、コンクリ
ート製マンホールにアンカーボルト等を埋め込みナット
等により固定保持することもできる。In the pipe joint of the present invention, when the pipe joint is mounted in the mounting hole 11 of the manhole 9, the outer circumference of the enlarged diameter portion 4 of the cylindrical main body 1 abuts the inner peripheral surface of the mounting hole 11 of the manhole 9. By performing sanding processing (not shown) from the surface to the surface 12 of the flange portion 2 on the side of the cylindrical body, a stronger and water-tight joint with a concrete manhole can be obtained. Further, a mortar, a sealant, etc. are provided in the recess 14 formed between the pipe holding ring 10 inserted between the inner peripheral surface of the expanded diameter portion 4 and the outer peripheral surface of the sewer pipe 5 and the flange portion 2 of the pipe joint. It is preferable to fill it to make it a decorative surface. Further, it is possible to make a hole in the flange portion in advance and fix and hold an anchor bolt or the like in a concrete manhole with a nut or the like.
【0014】本発明の管継手の円筒状本体1及びフラン
ジ部2は、硬質ポリ塩化ビニル、ポリエチレン、ポリプ
ロピレン、ABS、PET等の合成樹脂やこれらの成型
品をリサイクルしたもの等が使用でき、また、シールリ
ング7や管保持リング10には、NBR、SBR、EP
DM、シリコーンゴム等のゴム系材料及び軟質塩化ビニ
ル樹脂、EVA等の弾性を有する合成樹脂が使用でき
る。For the cylindrical main body 1 and the flange portion 2 of the pipe joint of the present invention, synthetic resin such as hard polyvinyl chloride, polyethylene, polypropylene, ABS, PET, etc. or recycled products of these molded products can be used. , The seal ring 7 and the pipe holding ring 10 have NBR, SBR, EP
Rubber-based materials such as DM and silicone rubber and elastic synthetic resins such as soft vinyl chloride resin and EVA can be used.
【0015】[0015]
【発明の効果】本発明の管継手によれば、地震等の揺れ
によってマンホールの取付部分から管継手が外れること
がなく、また、下水管とマンホールの連結部に加わる振
動や衝撃を吸収できるため、耐久性に優れた継手機能を
保持できる。According to the pipe joint of the present invention, the pipe joint does not come off from the mounting portion of the manhole due to shaking such as an earthquake, and the vibration and shock applied to the connecting portion between the sewer pipe and the manhole can be absorbed. The joint function with excellent durability can be maintained.
【図1】本発明の管継手の一例を示す正面図である。FIG. 1 is a front view showing an example of a pipe joint of the present invention.
【図2】図1のA−A矢視線に沿う断面図である。FIG. 2 is a cross-sectional view taken along the line AA of FIG.
【図3】本発明の管継手の装着状態を示す模式的断面図
である。FIG. 3 is a schematic cross-sectional view showing a mounted state of the pipe joint of the present invention.
1 管継手の円筒状本体 2 フランジ部 3 円筒状本体の縮径部 4 円筒状本体の拡径部 5 下水管 6 周凹溝 7 シールリング 8 間隙 9 マンホール 10 管保持リング 11 マンホールの取付孔 12 フランジ部の円筒状本体側の表面 13 接着材 14 凹み 1 Cylindrical body of pipe fitting 2 Flange part 3 Reduced diameter of cylindrical body 4 Expanding part of cylindrical body 5 sewer pipe 6 circumferential groove 7 seal ring 8 gap 9 manholes 10 Tube retaining ring 11 Manhole mounting holes 12 Surface of cylindrical body side of flange 13 Adhesive 14 dent
Claims (2)
嵌式の管継手であって、下水管を挿着する円筒状本体と
フランジ部とからなり、前記円筒状本体は、先方の円筒
状の縮径部とこれに続く同心円筒状の拡径部とからな
り、前記縮径部の先端部近傍の内周面にはシールリング
が装着される周凹溝が設けられ、前記円筒状本体の後方
端部にはフランジ部が一体に設けられてなり、前記円筒
状本体の拡径部の外周面と前記フランジ部の円筒状本体
側表面とでマンホールに接合一体化されてなることを特
徴とする管継手。1. An internal fitting type pipe joint for connecting a sewer pipe to a side wall of a manhole, comprising a cylindrical main body into which the sewer pipe is inserted and a flange portion, wherein the cylindrical main body has a cylindrical shape. Of the reduced diameter portion and a concentric cylindrical expanded portion following the reduced diameter portion, the inner peripheral surface near the tip end of the reduced diameter portion is provided with a circumferential groove in which a seal ring is mounted, and the cylindrical main body A flange portion is integrally provided at the rear end portion of the cylindrical body, and the outer peripheral surface of the enlarged diameter portion of the cylindrical body and the cylindrical body side surface of the flange portion are joined and integrated with a manhole. And pipe fittings.
に管保持リングを介挿させてなる請求項1に記載の管継
手。2. The pipe joint according to claim 1, wherein a pipe holding ring is inserted between the inner peripheral surface of the enlarged diameter portion and the outer peripheral surface of the sewer pipe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001330657A JP2003129508A (en) | 2001-10-29 | 2001-10-29 | Pipe joint |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001330657A JP2003129508A (en) | 2001-10-29 | 2001-10-29 | Pipe joint |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2003129508A true JP2003129508A (en) | 2003-05-08 |
Family
ID=19146356
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001330657A Pending JP2003129508A (en) | 2001-10-29 | 2001-10-29 | Pipe joint |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2003129508A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005350944A (en) * | 2004-06-10 | 2005-12-22 | Ito Yogyo Co Ltd | Joint structure of propulsive pipe and connection method between piping connected opening and propulsive pipe |
CN105927807A (en) * | 2016-05-17 | 2016-09-07 | 广东韶钢松山股份有限公司 | Sealing technology of gas inlet pipe of WSA condenser |
KR101820872B1 (en) * | 2016-04-04 | 2018-01-22 | (주)세니츠코퍼레이션 | Reinforcement and waterproof structure of vertical shafts-utility tunnels interface |
-
2001
- 2001-10-29 JP JP2001330657A patent/JP2003129508A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005350944A (en) * | 2004-06-10 | 2005-12-22 | Ito Yogyo Co Ltd | Joint structure of propulsive pipe and connection method between piping connected opening and propulsive pipe |
JP4620385B2 (en) * | 2004-06-10 | 2011-01-26 | 株式会社イトーヨーギョー | Propulsion pipe joint structure and pipe connection port and propulsion pipe connection method |
KR101820872B1 (en) * | 2016-04-04 | 2018-01-22 | (주)세니츠코퍼레이션 | Reinforcement and waterproof structure of vertical shafts-utility tunnels interface |
CN105927807A (en) * | 2016-05-17 | 2016-09-07 | 广东韶钢松山股份有限公司 | Sealing technology of gas inlet pipe of WSA condenser |
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