JP3172707B2 - Connection structure of underground pipe to connection part - Google Patents

Connection structure of underground pipe to connection part

Info

Publication number
JP3172707B2
JP3172707B2 JP12497298A JP12497298A JP3172707B2 JP 3172707 B2 JP3172707 B2 JP 3172707B2 JP 12497298 A JP12497298 A JP 12497298A JP 12497298 A JP12497298 A JP 12497298A JP 3172707 B2 JP3172707 B2 JP 3172707B2
Authority
JP
Japan
Prior art keywords
connection
pipe
fixed
underground pipe
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.)
Expired - Fee Related
Application number
JP12497298A
Other languages
Japanese (ja)
Other versions
JPH11318024A (en
Inventor
茂樹 金尾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kanaflex Corp Co Ltd
Original Assignee
Kanaflex Corp Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kanaflex Corp Co Ltd filed Critical Kanaflex Corp Co Ltd
Priority to JP12497298A priority Critical patent/JP3172707B2/en
Publication of JPH11318024A publication Critical patent/JPH11318024A/en
Application granted granted Critical
Publication of JP3172707B2 publication Critical patent/JP3172707B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Electric Cable Installation (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、ハンドホールやマ
ンホール等の接続部に地中埋設管を接続する接続部への
地中埋設管の接続構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure of an underground pipe to a connection for connecting an underground pipe to a connection part such as a handhole or a manhole.

【0002】[0002]

【従来の技術】上記接続部への地中埋設管の接続構造
は、一般的に、ハンドホールやマンホール等の接続部に
形成の孔に先端部がその先端部側ほど外拡がりとなるベ
ルマウスの基端部を貫通させた状態において、ベルマウ
スの先端部をモルタルを用いて孔に固定した後、ベルマ
ウスの基端部と地中埋設管の一端部とを嵌合して連結す
るようにしている。前記ベルマウスは、接続部と地中埋
設管とを接続するための連結部材としての機能と、接続
部内部にケーブルを傷つけることなく引き込むことがで
きるケーブル案内機能とを備えるものである。
2. Description of the Related Art In general, a connection structure of an underground pipe to the above-mentioned connection portion is a bell mouth in which a tip portion is formed so as to extend outward toward the tip portion in a hole formed in a connection portion such as a handhole or a manhole. After the base end of the bell mouth is penetrated, the tip of the bell mouth is fixed to the hole using mortar, and then the base end of the bell mouth and one end of the underground pipe are fitted and connected. I have to. The bell mouth has a function as a connecting member for connecting the connecting portion and the underground pipe, and a cable guiding function for pulling the cable into the connecting portion without damaging the inside.

【0003】上記ベルマウスは、取扱上において有利な
ように合成樹脂でなるとともに、ベルマウスの基端部が
ストレートに構成されている場合が多い。このようなベ
ルマウスの耐久性においては、ベルマウスの厚みによっ
て決まるものであり、十分な耐久性を得るためには、ベ
ルマウスの厚みを大きくしなければならず、重量の増大
による取扱上の不利を招くものであった。又、ベルマウ
スの先端部が先端部側ほど外拡がりとなるなだらかな湾
曲部により、接続部に形成の孔に対してベルマウスが外
部側へ抜けてしまうことを阻止するようにしているが、
前記のようになだらかな湾曲部では、ベルマウスに外部
から大きな引っ張り力が作用すると、ベルマウスが外部
へ移動して孔から抜けてしまう不都合が発生していた。
[0003] The bell mouth is made of a synthetic resin to be advantageous in handling, and the base end of the bell mouth is often straight. The durability of such a bellmouth is determined by the thickness of the bellmouth, and in order to obtain sufficient durability, the thickness of the bellmouth must be increased. It was disadvantageous. In addition, the tip of the bell mouth is gently curved so that the tip of the bell mouth becomes wider toward the tip, so that the bell mouth is prevented from falling out of the hole formed in the connection part to the outside.
In the gently curved portion as described above, when a large pulling force acts on the bellmouth from outside, there has been a problem that the bellmouth moves outside and comes out of the hole.

【0004】[0004]

【発明が解決しようとする課題】本発明が前述の状況に
鑑み、解決しようとするところは、接続部への地中埋設
管の接続を取扱上有利にしながらも、耐久性を十分に確
保でき、しかも、接続部と地中埋設管との連結部材が接
続部外部に抜けてしまうことを確実に阻止することがで
きる接続部への地中埋設管の接続構造を提供する点にあ
る。
SUMMARY OF THE INVENTION In view of the above-mentioned situation, the present invention is intended to solve the problem that the connection of the underground pipe to the connection portion is advantageous in handling, but the durability is sufficiently secured. In addition, it is an object of the present invention to provide a connection structure of an underground pipe to a connection part which can reliably prevent a connection member between the connection part and the underground pipe from falling out of the connection part.

【0005】[0005]

【課題を解決するための手段】本発明は、前述の課題解
決のために、ハンドホールやマンホール等の接続部へ地
中埋設管を接続する構造において、前記接続部に形成の
貫通孔に外面に突出部を備え、且つ、内面がフラットに
構成された固定側接続用管の一端を固定し、この固定側
接続用管の他端に、外面に該接続用管の内面とのシール
を行うためのシール部材を備えた前記地中埋設管をスラ
イド可能に内嵌し、先端部がその先端部側ほど外拡がり
となるベルマウスの基端部を前記固定側接続用管の接続
部側一端に該接続部の内部から内挿して取り付けたこと
を特徴としている。接続部に地中埋設管を接続するため
の連結部材としての固定側接続用管の外面に突出部を備
えさせる構成にすることによって、固定側接続用管自体
の保形強度を向上させることができるから、固定側接続
用管の厚みを従来のストレート管よりも薄くしても同等
又はそれ以上の保形強度を得ることができるだけでな
く、固定側接続用管を接続部に形成の貫通孔にモルタル
等を用いて固定したときに、前記突出部がアンカー効果
となり、固定側接続用管が接続部から抜け難くすること
ができる。しかも、ベルマウスの基端部を固定側接続用
管の一端に内挿することによって、固定側接続用管の一
端部の補強を行うことができるだけでなく、接続部内部
にケーブルを傷つけることなく引き込むことができる。
又、固定側接続用管に対して地中埋設管が移動可能に構
成することによって、地震や地盤沈下等により発生する
前後の振動を地中埋設管が移動して良好に吸収すること
ができる。
According to the present invention, there is provided a structure for connecting an underground pipe to a connection part such as a handhole or a manhole in order to solve the above-mentioned problem. , And one end of a fixed-side connection pipe having a flat inner surface is fixed, and the other end of the fixed-side connection pipe is sealed on the outer surface with the inner surface of the connection pipe. The underground pipe provided with a sealing member for slidably fitting the underground pipe, and the base end of the bell mouth having a distal end that expands outward toward the distal end side is connected to one end of the connection side of the fixed connection pipe. The connection portion is inserted and attached from inside the connection portion. By providing a protrusion on the outer surface of the fixed connection pipe as a connecting member for connecting the underground pipe to the connection part, it is possible to improve the shape retention strength of the fixed connection pipe itself. Therefore, even if the thickness of the fixed-side connection pipe is made thinner than the conventional straight pipe, not only the same or higher shape retention strength can be obtained, but also the fixed-side connection pipe is formed at the connection portion through hole. When fixed using a mortar or the like, the protruding portion serves as an anchor effect, and the fixed-side connecting pipe can be made hard to come off from the connecting portion. Moreover, by inserting the base end of the bell mouth into one end of the fixed-side connection tube, not only can one end of the fixed-side connection tube be reinforced, but also the cable is not damaged inside the connection portion. Can be withdrawn.
In addition, by arranging the underground pipe to be movable relative to the fixed connection pipe, the underground pipe can move and absorb the vibration before and after that occurs due to an earthquake, land subsidence, or the like. .

【0006】前記地中埋設管よりも小径な管の複数を該
地中埋設管の内部に配置し、前記ベルマウスを、前記管
の端部に該管の外径よりも大きな内径を有する、又は該
管の内径よりも小さな外径を有する複数のベルマウスか
ら構成し、これらベルマウスの基端部を支持部材に形成
の複数の孔にそれぞれ貫通させた状態において連結し、
前記支持部材を接続部に固定している。地中埋設管より
も小径な管の複数を地中埋設管の内部に配置し、それら
小径な管に光ケーブルや情報ケーブル、あるいは通信ケ
ーブル等の重要なケーブルを挿入して二重保護を行う場
合に、複数のベルマウス同士の間隔を支持部材に形成し
た孔により任意に設定することができるとともに、ベル
マウスを孔に挿入するだけで支持部材に対するベルマウ
スの位置決めを容易に行うことができる。又、固定側接
続用管が接続部の内部に突出することを回避することが
できるから、複数のベルマウスが貫通した支持部材を接
続部の側壁に容易に固定することができる。
[0006] A plurality of pipes smaller in diameter than the underground pipe are arranged inside the underground pipe, and the bell mouth has an inner diameter larger than an outer diameter of the pipe at an end of the pipe. Or composed of a plurality of bell mouths having an outer diameter smaller than the inner diameter of the tube, connected in a state where the base end of these bell mouths respectively penetrate the plurality of holes formed in the support member,
The support member is fixed to the connection part. When multiple pipes smaller than the underground pipe are placed inside the underground pipe, and important cables such as optical cables, information cables, or communication cables are inserted into those small pipes to provide double protection. In addition, the interval between the plurality of bellmouths can be arbitrarily set by a hole formed in the support member, and the bellmouth can be easily positioned with respect to the support member only by inserting the bellmouth into the hole. In addition, since the fixed-side connection pipe can be prevented from protruding into the connection portion, the support member through which the plurality of bellmouths penetrate can be easily fixed to the side wall of the connection portion.

【0007】前記シール部材を地中埋設管の長手方向に
沿って複数設けることによって、固定側接続用管に対す
る地中埋設管の移動をスムーズに行わせることができる
とともに、シール機能を長期間に渡って確実に発揮させ
ることができる。
By providing a plurality of the sealing members along the longitudinal direction of the underground pipe, the underground pipe can be smoothly moved with respect to the fixed connection pipe, and the sealing function can be performed for a long period of time. It can be reliably demonstrated across the board.

【0008】前記管を、外面又は内面もしくはそれら両
面に凹部と凸部とを交互に備え、且つ、それらが螺旋状
に形成されたものから構成し、この管に内側又は外側か
ら螺合可能な螺合部を前記ベルマウスの基端部に備えさ
せている。つまり、管とベルマウスとの連結をねじ込み
により行う構成であるから、例えば接着剤等を用いて連
結するものに比べて、連結作業の迅速化を図ることがで
きるとともに、接着不良等がなく確実な連結を行うこと
ができる。
[0008] The tube is constituted by alternately providing concave portions and convex portions on the outer surface or the inner surface or on both surfaces thereof and formed in a spiral shape, and can be screwed into the tube from inside or outside. A threaded portion is provided at the base end of the bell mouth. That is, since the connection between the pipe and the bell mouth is made by screwing, the connection work can be sped up as compared with a connection using, for example, an adhesive, and the connection can be made without adhesion failure. Connection can be performed.

【0009】[0009]

【発明の実施の形態】図1に、配管経路に配設された2
つの接続部1,1同士を複数の地中埋設管2を介して接
続した状態を示している。前記地中埋設管2,2同士
は、地中埋設管の外径よりも大きな内径を有する連結部
材3により連結され、接続部1,1に近接位置する地中
埋設管2,2それぞれは、接続部1としてのハンドホー
ルに固定された固定側接続用管4にスライド可能に内嵌
され、地震や地盤沈下等により発生する振動を固定側接
続用管4に対して地中埋設管2が移動することで吸収す
ることができるようにしている。そして、前記地中埋設
管2内部に、光ケーブルや情報ケーブル、あるいは通信
ケーブル等の重要なケーブルを挿入するための複数の小
径な管6を配設している。尚、図に示す5は、前記地中
埋設管2の端部に外嵌したゴム製又は合成樹脂製のOリ
ングであり、この地中埋設管2の端部を連結部材3に差
し込むだけで、地中埋設管2と連結部材3とのシール処
理が完了するように構成している。又、接続部1,1に
近接位置する地中埋設管2,2のハンドホール側端部に
は、シール部材としての前記Oリング5の2個が所定間
隔を置いて外嵌しており、シール性能を長期間に渡って
確実に発揮するようにしている。このOリング5を2個
設ける他、3個以上設けて実施することによって、シー
ル性能を更に高めることができる。前記接続部1として
は、ハンドホールの他、ハンドホールよりも大きなマン
ホールの他、ハンドホールよりも小さなボックス等、ど
のような大きさのものでもよい。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
1 shows a state in which two connection parts 1 and 1 are connected via a plurality of underground pipes 2. The underground pipes 2 and 2 are connected to each other by a connecting member 3 having an inner diameter larger than the outer diameter of the underground pipe, and the underground pipes 2 and 2 located close to the connection portions 1 and 1, respectively. The underground pipe 2 is slidably fitted in the fixed connection pipe 4 fixed to the handhole as the connection section 1, and the underground pipe 2 is subjected to vibration generated by an earthquake, land subsidence, or the like with respect to the fixed connection pipe 4. It can be absorbed by moving. A plurality of small-diameter pipes 6 for inserting important cables such as an optical cable, an information cable, and a communication cable are arranged inside the underground pipe 2. Reference numeral 5 shown in the figure is an O-ring made of rubber or synthetic resin externally fitted to the end of the underground pipe 2, and only by inserting the end of the underground pipe 2 into the connecting member 3. The sealing process between the underground pipe 2 and the connecting member 3 is completed. Also, two O-rings 5 as seal members are externally fitted at predetermined intervals on the handhole side ends of the underground pipes 2 and 2 located close to the connection parts 1 and 1, The sealing performance is ensured over a long period of time. By providing two or more O-rings 5 and providing three or more O-rings 5, the sealing performance can be further improved. The connecting portion 1 may be of any size, such as a handhole, a manhole larger than the handhole, and a box smaller than the handhole.

【0010】前記固定側接続用管4は、合成樹脂又は硬
質ゴム等でなり、図2に示すように外面に断面形状矩形
状の突出部4Aを螺旋状に備えるとともに、内面4Bを
フラットに形成している。そして、この固定側接続用管
4を接続部1の側壁に形成の貫通孔1Aに接続部1の内
部又は外部から挿入し、固定側接続用管4の端面と接続
部1の内壁面とが面一状になる状態でモルタルMを用い
て固定するのである。前記固定側接続用管4の端面と接
続部1の内壁面とが面一状になるようにしたが、固定側
接続用管4の端面が接続部1の内壁面よりも内部側に突
出しないように固定側接続用管4を外部側に位置するよ
うにしてもよい。前記突出部4Aは、前記のように断面
形状矩形状にする他、断面形状三角形状等の多角形状あ
るいは円形状や楕円形状の他、図8に示すようにフィン
形状の突出部4Aでもよく、突出部4Aの形状はどのよ
うな形状のものでもよい。図8では、フィン形状の突出
部4Aの多数を固定側接続用管4の外面に軸芯方向に適
当間隔を置いて環状に備えさせたものであり、突出部4
Aは連続する一連のもので構成する他、断続する複数個
のものから構成してもよい。
The fixed connection pipe 4 is made of synthetic resin or hard rubber or the like. As shown in FIG. 2, the outer surface is provided with a projecting portion 4A having a rectangular cross section on the outer surface in a spiral shape and the inner surface 4B is formed flat. are doing. Then, the fixed connection pipe 4 is inserted into the through hole 1A formed in the side wall of the connection section 1 from inside or outside of the connection section 1 so that the end face of the fixed connection pipe 4 and the inner wall surface of the connection section 1 are connected. The mortar M is used for fixing in a state where the surfaces are flush. The end face of the fixed-side connection pipe 4 and the inner wall surface of the connection part 1 are made flush, but the end face of the fixed-side connection pipe 4 does not protrude more inward than the inner wall face of the connection part 1. Thus, the fixed connection pipe 4 may be located on the outside. The projecting portion 4A may be a fin-shaped projecting portion 4A as shown in FIG. 8 in addition to a polygonal shape such as a triangular cross-section, a circular shape or an elliptical shape in addition to the rectangular shape as described above, The shape of the protrusion 4A may be any shape. In FIG. 8, a large number of fin-shaped protrusions 4A are annularly provided on the outer surface of the fixed-side connection pipe 4 at appropriate intervals in the axial direction.
A may be composed of a continuous series or a plurality of intermittent ones.

【0011】前記地中埋設管2は、図2にも示すよう
に、外面に凹部2Aと凸部2Bとを交互に備え、且つ、
それらが螺旋状に形成されるとともに、内面2Cをフラ
ットに形成している。そして、前記のように地中埋設管
2の固定側接続用管4側端部の外面の2箇所にOリング
5を設けることによって、固定側接続用管4に対して地
中埋設管2をスムーズに移動させることができるように
している。前記凸部2B内に、補強用の金属板11を備
えさせている。
As shown in FIG. 2, the underground pipe 2 is provided with concave portions 2A and convex portions 2B alternately on its outer surface.
They are formed spirally and the inner surface 2C is formed flat. The O-rings 5 are provided at two places on the outer surface of the end of the underground pipe 2 on the fixed-side connection pipe 4 side as described above, so that the underground pipe 2 is fixed to the fixed-side connection pipe 4. It is designed to be able to move smoothly. A reinforcing metal plate 11 is provided in the protrusion 2B.

【0012】前記各管6を、外面及び内面に凹凸面が管
軸芯方向に沿って交互に備え、且つそれらが螺旋状に形
成されたものから構成し、図6にも示すように前記管6
の内面側の凹部6Aに入り込む螺子部である螺旋状の突
起部8Aをベルマウス8の外面に備えさせている。従っ
て、接続部1の側壁にボルト固定される支持部材7(図
7参照)に形成の複数の孔7Aそれぞれに貫通させたベ
ルマウス8の基端部8Bを管6の接続部1側端部にねじ
込むことによりベルマウス8と管6との連結を完了する
とともに、管6をベルマウス8を介して支持部材7に固
定することができるようにしている。前記ベルマウス8
は、合成樹脂又は合成ゴム等の他、セラミックや金属等
どのような材料で構成してもよい。又、前記ベルマウス
8は、先端部側ほど外拡がり形状となるラッパ状の先端
部8Aの湾曲内面8aで引き込み時のケーブルを案内す
ることによって、ケーブルが傷付くことがないようにし
ている。前記ベルマウス8を管6に内挿する構成とする
他、ベルマウス8を管6に外挿する構成としてもよい。
又、ベルマウス8と管6とを螺合により連結するように
したが、接着剤等を用いて連結してもよい。前記支持部
材7は、複数の孔7Aが形成された円板状の本体部7a
と、この本体部7aの裏面から裏面側に突出する環状部
7bとからなり、この環状部7bを前記固定側接続用管
4に内嵌することができるようにしている。
Each of the tubes 6 is constituted by an outer surface and an inner surface provided with an uneven surface alternately along the axis of the tube and formed in a spiral shape. As shown in FIG. 6
A spiral projection 8A, which is a screw portion that enters the recess 6A on the inner surface side of the bell mouth 8, is provided on the outer surface of the bell mouth 8. Therefore, the base end portion 8B of the bell mouth 8 penetrated through each of the plurality of holes 7A formed in the support member 7 (see FIG. 7) bolted to the side wall of the connection portion 1 is connected to the connection portion 1 side end portion of the pipe 6. Screwing the bell mouth 8 with the tube 6 is completed, and the tube 6 can be fixed to the support member 7 via the bell mouth 8. The bellmouth 8
May be made of any material such as ceramic or metal other than synthetic resin or synthetic rubber. Further, the bell mouth 8 guides the cable at the time of pulling in by the curved inner surface 8a of the trumpet-shaped tip portion 8A having a shape expanding outward toward the tip portion, so that the cable is not damaged. The bell mouth 8 may be inserted into the tube 6, or the bell mouth 8 may be inserted into the tube 6.
Although the bell mouth 8 and the tube 6 are connected by screwing, they may be connected using an adhesive or the like. The support member 7 has a disk-shaped main body portion 7a in which a plurality of holes 7A are formed.
And an annular portion 7b protruding from the back surface of the main body portion 7a to the back surface side. The annular portion 7b can be fitted inside the fixed side connection tube 4.

【0013】前記接続部1,1同士間の配管作業順序に
ついて簡単に説明すれば、まず、固定側接続用管4を接
続部1,1それぞれにモルタルを用いて固定する。次
に、複数の地中埋設管2を連結部材3を介して連結する
とともに、両端に位置する地中埋設管2,2を、固定さ
れた固定側接続用管4,4にそれぞれ内挿する。この
後、複数の管6を一方の固定側接続用管4の接続部1側
開口部4Cを通して他方の固定側接続用管4まで挿入配
置した後、前述のように支持部材7,7にベルマウス8
を複数の管6を固定する。そして、支持部材7,7を固
定側接続用管4,4に内嵌した後、ボルト9により接続
部1,1の側壁にそれぞれ固定し、作業を終了する。前
記固定側接続用管4を接続部1にモルタルMを用いて固
定する他、接着剤により固定してもよい。
In brief, the order of the piping work between the connecting portions 1 and 1 is as follows. First, the fixed side connecting pipe 4 is fixed to each of the connecting portions 1 and 1 using mortar. Next, the plurality of underground pipes 2 are connected via the connecting member 3, and the underground pipes 2, 2 located at both ends are inserted into the fixed fixed connection pipes 4, 4. . Thereafter, the plurality of tubes 6 are inserted and arranged to the other fixed-side connection tube 4 through the connection portion 1 side opening 4C of one fixed-side connection tube 4, and bellows are attached to the support members 7, 7 as described above. Mouse 8
Is fixed to a plurality of tubes 6. Then, after the support members 7, 7 are fitted inside the fixed connection tubes 4, 4, the support members 7, 7 are fixed to the side walls of the connection portions 1, 1 by bolts 9, respectively, and the operation is completed. The fixed connection pipe 4 may be fixed to the connection portion 1 using mortar M, or may be fixed using an adhesive.

【0014】前記実施例では、複数の管6を地中埋設管
2の内部に備えさせたものを示したが、図9に示すよう
に、複数の管6を省略し、地中埋設管2の内部に直接ケ
ーブルを備えさせるように構成してもよい。この場合、
図に示す10がベルマウスである。
In the above embodiment, a plurality of pipes 6 are provided inside the underground pipe 2. However, as shown in FIG. 9, the plurality of pipes 6 are omitted and the underground pipe 2 is omitted. A cable may be provided directly inside the device. in this case,
10 shown in the figure is a bell mouth.

【0015】[0015]

【発明の効果】請求項1によれば、接続部に地中埋設管
を接続するための連結部材としての固定側接続用管の外
面に突出部を備えさせる構成にすることによって、固定
側接続用管自体の保形強度を向上させることができるか
ら、固定側接続用管の厚みを従来のストレート管よりも
薄くしても同等又はそれ以上の保形強度を得ることがで
きるだけでなく、固定側接続用管を接続部に形成の貫通
孔にモルタル等を用いて固定したときに、突出部がアン
カー効果となり、固定側接続用管が接続部から抜け難く
することができる。しかも、ベルマウスの基端部を固定
側接続用管の一端に内挿することによって、固定側接続
用管の一端部の補強を行うことができるだけでなく、接
続部内部にケーブルを傷つけることなく引き込むことが
できる。従って、固定側接続用管に対する取扱を容易に
行えるものでありながら、保形強度も十分に確保するこ
とができるとともに、固定側接続用管が接続部から抜け
てしまうことを確実に阻止することができ、長期間に渡
って良好に使用することができる。加えて、固定側接続
用管に対して地中埋設管が移動可能に構成することによ
って、地震や不等沈下等により発生する前後の振動を地
中埋設管が移動して良好に吸収することができる。
According to the first aspect of the present invention, the fixed-side connection pipe is provided with a projection on the outer surface of the fixed-side connection pipe as a connecting member for connecting the underground pipe to the connection section. Since the shape-retaining strength of the pipe itself can be improved, even if the thickness of the fixed-side connection pipe is made thinner than a conventional straight pipe, not only can the same or higher shape-retaining strength be obtained, but also the fixing When the side connection tube is fixed to the through hole formed in the connection portion by using mortar or the like, the protruding portion serves as an anchor effect, and the fixed side connection tube can be hardly removed from the connection portion. Moreover, by inserting the base end of the bell mouth into one end of the fixed-side connection tube, not only can one end of the fixed-side connection tube be reinforced, but also the cable is not damaged inside the connection portion. Can be withdrawn. Therefore, while being able to easily handle the fixed-side connection pipe, it is possible to secure sufficient shape-retaining strength and to reliably prevent the fixed-side connection pipe from falling out of the connection portion. And can be used favorably over a long period of time. In addition, by configuring the underground pipe to be movable with respect to the fixed-side connection pipe, the underground pipe can move and absorb the vibration before and after that occurs due to an earthquake, uneven settlement, etc. Can be.

【0016】請求項2によれば、地中埋設管よりも小径
な管の複数を地中埋設管の内部に配置し、それら小径な
管に光ケーブルや情報ケーブル、あるいは通信ケーブル
等の重要なケーブルを挿入して二重保護を行う場合に、
複数のベルマウス同士の間隔を支持部材に形成した孔に
より任意に設定することができるとともに、ベルマウス
を孔に挿入するだけで支持部材に対するベルマウスの位
置決めを容易に行うことができ、施工作業の迅速化を図
ることができる。又、固定側接続用管が接続部の内部に
突出することを回避することができるから、複数のベル
マウスが貫通した支持部材を接続部の側壁に容易に固定
することができ、施工面において有利である。
According to the second aspect, a plurality of pipes smaller in diameter than the underground pipe are arranged inside the underground pipe, and important cables such as an optical cable, an information cable, and a communication cable are connected to the small diameter pipe. To provide double protection by inserting
The spacing between the bellmouths can be arbitrarily set by the holes formed in the support member, and the bellmouth can be easily positioned with respect to the support members simply by inserting the bellmouth into the holes, and Can be accelerated. In addition, since the fixed-side connection pipe can be prevented from protruding into the connection portion, the support member through which the plurality of bellmouths penetrate can be easily fixed to the side wall of the connection portion. It is advantageous.

【0017】請求項3によれば、シール部材を地中埋設
管の長手方向に沿って複数設けることによって、固定側
接続用管に対する地中埋設管の移動をスムーズに行わせ
ることができるとともに、シール機能を長期間に渡って
確実に発揮させることができ、耐久性に優れたものにす
ることができる。
According to the third aspect, by providing a plurality of seal members along the longitudinal direction of the underground pipe, it is possible to smoothly move the underground pipe relative to the fixed-side connection pipe, The sealing function can be reliably exerted over a long period of time, and the durability can be improved.

【0018】請求項4によれば、管を、外面又は内面も
しくはそれら両面に凹部と凸部とを交互に備え、且つ、
それらが螺旋状に形成されたものから構成し、この管に
内側又は外側から螺合可能な螺合部を前記ベルマウスの
基端部に備えさせている。つまり、管とベルマウスとの
連結をねじ込みにより行う構成であるから、例えば接着
剤等を用いて連結するものに比べて、連結作業の迅速化
を図ることができるとともに、接着不良等がなく確実な
連結を行うことができる。
According to claim 4, the tube is provided with concave portions and convex portions alternately on the outer surface or the inner surface or on both surfaces thereof, and
These tubes are formed in a spiral shape, and a threaded portion that can be threaded into the tube from inside or outside is provided at the base end of the bell mouth. That is, since the connection between the pipe and the bell mouth is made by screwing, the connection work can be sped up as compared with a connection using, for example, an adhesive, and the connection can be made without adhesion failure. Connection can be performed.

【図面の簡単な説明】[Brief description of the drawings]

【図1】接続部同士を地中埋設管により接続した状態を
示す一部切欠き断面図。
FIG. 1 is a partially cutaway sectional view showing a state in which connecting portions are connected by an underground pipe.

【図2】接続部と地中埋設管との接続部構造を示す断面
図。
FIG. 2 is a sectional view showing a structure of a connecting portion between the connecting portion and an underground pipe.

【図3】固定側接続用管に地中埋設管を挿入した状態を
示す断面図。
FIG. 3 is a cross-sectional view showing a state where an underground pipe is inserted into a fixed-side connection pipe.

【図4】管を地中埋設管に挿入した状態を示す断面図。FIG. 4 is a sectional view showing a state where the pipe is inserted into an underground pipe.

【図5】管を支持部材に固定する直前の状態を示す断面
図。
FIG. 5 is a sectional view showing a state immediately before fixing the pipe to the support member.

【図6】管を支持部材に固定した状態を示す要部の断面
図。
FIG. 6 is a sectional view of a main part showing a state in which the tube is fixed to a support member.

【図7】支持部材の斜視図。FIG. 7 is a perspective view of a support member.

【図8】固定側接続用管の別の形態を示す断面図。FIG. 8 is a sectional view showing another embodiment of the fixed connection pipe.

【図9】支持部材の別の形態を示す断面図。FIG. 9 is a sectional view showing another form of the support member.

【符号の説明】[Explanation of symbols]

1 接続部 1A 貫通孔 2 地中埋設管 2A 凹部 2B 凸部 2C 内面 3 連結部材 4 固定側接続用
管 4A 突出部 4B 内面 4C 開口部 5 Oリング 6 管 6A 凹部 7 支持部材 8 ベルマウス 8A ラッパ部 8B 基端部 8C 螺子部 8a 湾曲内面 9 ボルト 10 ベルマウス 11 金属板
DESCRIPTION OF SYMBOLS 1 Connection part 1A Through hole 2 Underground pipe 2A Depression 2B Convex part 2C Inner surface 3 Connecting member 4 Fixed side connection pipe 4A Projection 4B Inner surface 4C Opening 5 O-ring 6 Tube 6A Recess 7 Support member 8 Bell mouth 8A Wrapper Part 8B Base end 8C Screw part 8a Curved inner surface 9 Bolt 10 Bell mouth 11 Metal plate

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) H02G 9/00 F16L 1/024 H02G 1/06 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H02G 9/00 F16L 1/024 H02G 1/06

Claims (4)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 ハンドホールやマンホール等の接続部へ
地中埋設管を接続する構造において、前記接続部に形成
の貫通孔に外面に突出部を備え、かつ、内面がフラット
に構成された固定側接続用管の一端を固定し、この固定
側接続用管の他端に、外面に該接続用管の内面とのシー
ルを行うためのシール部材を備えた前記地中埋設管をス
ライド可能に内嵌し、先端部がその先端部側ほど外拡が
りとなるベルマウスの基端部を前記固定側接続用管の接
続部側一端に該接続部の内部から内挿して取り付けたこ
とを特徴とする接続部への地中埋設管の接続構造。
In a structure for connecting an underground pipe to a connection part such as a handhole or a manhole, a through hole formed in the connection part is provided with a protruding part on an outer surface, and a fixed inner surface is formed. One end of the side connection pipe is fixed, and the underground pipe provided with a seal member for sealing the outer surface with the inner surface of the connection pipe at the other end of the fixed connection pipe is slidable. The base end portion of the bell mouth whose inner end is fitted inside and whose outer end portion is more outwardly expanded toward the end portion side is attached to one end of the connection portion side of the fixed side connection tube by being inserted from inside the connection portion. Connection structure of underground pipe to the connecting part to be connected.
【請求項2】 前記地中埋設管よりも小径な管の複数を
該地中埋設管の内部に配置し、前記ベルマウスを、前記
管の端部に該管の外径よりも大きな内径を有する、又は
該管の内径よりも小さな外径を有する複数のベルマウス
から構成し、これらベルマウスの基端部を支持部材に形
成の複数の孔にそれぞれ貫通させた状態において連結
し、前記支持部材を接続部に固定したことを特徴とする
請求項1記載の接続部への地中埋設管の接続構造。
2. A plurality of pipes having a smaller diameter than the underground pipe are disposed inside the underground pipe, and the bell mouth is provided at an end of the pipe with an inner diameter larger than an outer diameter of the pipe. Comprising, or a plurality of bell mouths having an outer diameter smaller than the inner diameter of the tube, and connecting the base ends of these bell mouths in a state of being penetrated through a plurality of holes formed in the support member, respectively, The underground pipe connecting structure to a connecting part according to claim 1, wherein the member is fixed to the connecting part.
【請求項3】 前記シール部材を地中埋設管の長手方向
に沿って複数設けたものでなる請求項1記載の接続部へ
の地中埋設管の接続構造。
3. The underground pipe connection structure according to claim 1, wherein a plurality of said seal members are provided along a longitudinal direction of the underground pipe.
【請求項4】 前記管を、外面又は内面もしくはそれら
両面に凹部と凸部とを交互に備え、且つ、それらが螺旋
状に形成されたものから構成し、この管に内側又は外側
から螺合可能な螺合部を前記ベルマウスの基端部に備え
させてなる請求項1記載の接続部への地中埋設管の接続
構造。
4. The tube is provided with a concave portion and a convex portion alternately provided on an outer surface or an inner surface or on both surfaces thereof, and they are formed in a spiral shape, and are screwed into the tube from inside or outside. 2. A connection structure for an underground pipe to a connection portion according to claim 1, wherein a possible screw portion is provided at a base end portion of said bell mouth.
JP12497298A 1998-05-07 1998-05-07 Connection structure of underground pipe to connection part Expired - Fee Related JP3172707B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12497298A JP3172707B2 (en) 1998-05-07 1998-05-07 Connection structure of underground pipe to connection part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12497298A JP3172707B2 (en) 1998-05-07 1998-05-07 Connection structure of underground pipe to connection part

Publications (2)

Publication Number Publication Date
JPH11318024A JPH11318024A (en) 1999-11-16
JP3172707B2 true JP3172707B2 (en) 2001-06-04

Family

ID=14898784

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12497298A Expired - Fee Related JP3172707B2 (en) 1998-05-07 1998-05-07 Connection structure of underground pipe to connection part

Country Status (1)

Country Link
JP (1) JP3172707B2 (en)

Also Published As

Publication number Publication date
JPH11318024A (en) 1999-11-16

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