JP3593510B2

JP3593510B2 - Assembled pipe

Info

Publication number: JP3593510B2
Application number: JP2001206145A
Authority: JP
Inventors: 茂高田
Original assignee: 株式会社高田製作所
Priority date: 2001-07-06
Filing date: 2001-07-06
Publication date: 2004-11-24
Anticipated expiration: 2021-07-06
Also published as: JP2003021294A

Description

【０００１】
【発明の属する技術分野】
本発明は、主としてケーブルなどの防護管として用いる組立式管体に関するものである。
【０００２】
【従来の技術】
従来のこの種の組立式管体として、一対の半管体の互いに対向する割り面の、一方の割り面には係合溝を形成し、他方の割り面には前記係合溝に係合する突片を形成して、前記一対の半管体を凹面側で向かい合わせに突き合わせて前記一方の半管体の割り面の係合溝に他方の半管体の割り面の突片を係合させるようにして組み立てる組立式管体が知られている。また、組み立てられた管体の敷設にあっては、その開口端部を挿入するようにして順次接続されて敷設されるものがある。また、敷設ラインに曲がり部がある場合には、この曲がりに対応した曲がった形状の管体が用意されている。
【０００３】
【発明が解決しようとする課題】
上記従来の組立式管体によれば、一対の半管体の接続固定が、一方の半管体の割り面の係合溝に他方の半管体の割り面の突片を係合させる構造となっているため、強い外力が加わったとき外れるおそれがあり、また割り面に形成されている突片は半管体の肉厚より薄く強度の面で難があり、この強度を増そうとすれば半管体の肉厚を必要以上に厚くせざるを得ず、材料の無駄になるばかりか重くなるため作業性が悪くなるといった問題がある。また、組み立てられた管体の敷設にあって、順次敷設された管体同士はその開口端部が挿入されて接続されているだけなので、埋設時に土砂などの強い力が加わると接続されている管体が外れてしまい、内に通してあるケーブル等が露出してしまうおそれがあるといった問題がある。また、敷設ラインに曲がり部がある場合には、この曲がりに対応した曲がった形状の管体を用意しなければならないため、その分製造コストのアップも避けられず、また取り扱いが煩雑となるといった問題がある。更には、前記管体では、接続された管体の長さ調整に対する対応がなされておらず、長さ調整ができない或いは困難であるといった問題がある。
【０００４】
本発明の目的は、突き合わせた一対の半管体を固定して管本体を維持するとともに該管本体に同様に構成した他の管本体を接続でき、更には曲がりや長さ調整にも対応できる組立式管体を提供することにある。
【０００５】
【課題を解決するための手段】
上記目的を達成するために、請求項１に記載の組立式管体は、凹面側で向かい合わせに突き合わせて管本体を構成する一対の半管体と、凹面側で向かい合わせに突き合わせて管状体を構成し、前記突き合わせた一対の半管体を固定して管本体を維持するとともに該管本体に同様に構成した他の管本体を接続する合成樹脂製の一対の接続半管状体とからなり、前記一対の半管体は、半管本体部と、該半管本体部の軸方向両端に延設した接続用半管部とからなり、前記接続用半管部の軸方向の端部外周には外方向に突出する鍔状突部が周方向に設けられ、更に前記接続用半管部には該接続用半管部の軸方向の端部に開口するスリットが形成されており、前記一対の接続半管状体にあっては、前記一対の半管体を突き合わせて構成した管本体と、同様にして構成した他の管本体の接続用半管部の外周に跨って嵌合可能となっており、その軸方向両端には前記接続用半管部に設けられた鍔状突部の内側に係止する鍔状係止突部が２つの管本体の接続用半管部に設けられた鍔状突部と軸方向に所定の間隔を空けて内方に突出して設けられ、周方向両端には、前記突き合わせて管本体を構成する一対の半管体の接続用半管部に跨って双方の接続用半管部のスリットに挿入される挿入片が内方に突出して設けられていることを特徴とする。
【０００６】
かかる構成から、一対の半管体を凹面側で向かい合わせに突き合わせて管本体を構成し、該管本体の両側を構成している一対の接続用半管部に、それぞれ外周から跨るようにして一対の接続半管状体の一方の接続半管状体を嵌合し、該接続半管状体の周方向両端に設けられている挿入片を樹脂の弾性変形を利用して双方の接続用半管部のスリットに挿入し、同様にして一対の接続半管状体の他方の接続半管状体を前記一対の接続用半管部に反対側から嵌合し、該接続半管状体の周方向両端に設けられている挿入片を樹脂の弾性変形を利用して双方の接続用半管部の前記スリットに挿入すると、前記一対の半管体を突き合わせて構成した管本体は、双方の接続用半管部に、それぞれ外周から跨るようにして両側から嵌合した一対の接続半管状体により確実に接続固定される。そして、双方の接続用半管部に嵌合した一対の接続半管状体は、その軸方向両端に設けられた鍔状係止突部が前記接続用半管部に設けられた鍔状突部の内側に係止するので、双方の接続用半管部から軸方向に抜け出るおそれがない。
【０００７】
また、一対の半管体を突き合わせて構成した管本体と、該管本体に同様に構成した他の管本体を接続する場合、一対の半管体を突き合わせて構成した管本体の開口端部と、同様に構成した他の管本体の開口端部とを突き合わせた状態で、２つの管本体の接続用半管部に、それぞれ外周から跨るようにして一対の接続半管状体の一方の接続半管状体を嵌合し、該接続半管状体の周方向両端に設けられている挿入片を樹脂の弾性変形を利用して２つの接続用半管部のスリットに挿入し、同様にして一対の接続半管状体の他方の接続半管状体を前記一対の接続用半管部に反対側から嵌合し、該接続半管状体の周方向両端に設けられている挿入片を樹脂の弾性変形を利用して２つの接続用半管部の前記スリットに挿入すると、前記一対の半管体を突き合わせて構成した２つの突き合わせ状態にある管本体は、２つの接続用半管部に、それぞれ外周から跨るようにして両側から嵌合した一対の接続半管状体により確実に接続固定される。そして、２つの接続用半管部に嵌合した一対の接続半管状体は、その軸方向両端に設けられた鍔状係止突部が前記２つの接続用半管部に設けられた鍔状突部の内側に係止するので、２つの接続用半管部から軸方向に抜け出るおそれがなく、前記２つの管本体は一対の接続半管状体により確実に接続される。更に、このような組立式管体は、突き合わせた一対の半管体を固定して管本体を構成する工程と該管本体に同様に構成した他の管本体を接続する工程とを同時に行うことができるので、組み立て作業性がよい。
【０００８】
請求項２に記載の組立式管体は、請求項１に記載の前記一対の接続半管状体の軸方向両端に内方に向けて設けられた鍔状係止突部は、前記一対の半管体により構成した管本体と同様にして構成した他の管本体の接続用半管部同士を突き合わせた状態で、該２つの管本体の接続用半管部に跨って嵌合したとき、２つの管本体の接続用半管部に設けられた鍔状突部と軸方向に所定の間隔を空けるように設けられていることを特徴とする。
【０００９】
かかる構成から、一対の接続半管状体により接続された２つの管本体は、接続半管状体の鍔状係止突部と管本体の接続用半管部の鍔状突部との間の所定間隔内において軸方向に移動が可能となり、この範囲で接続された管本体の全長の調整を行うことができる。
【００１０】
請求項３に記載の組立式管体は、請求項１又は２に記載の前記一対の接続半管状体の軸方向両端に内方に突出して設けられている鍔状係止突部は、前記接続用半管部に設けられた鍔状突部の外径より小径で且つ接続用半管部の外径より所定寸法大径な内径を有していることを特徴とする。
【００１１】
かかる構成から、接続半管状体で一対の半管体を突き合わせて構成した管本体と、該管本体に同様に構成した他の管本体を接続したとき、前記接続半管状体に設けられた鍔状係止突部が２つの管本体の接続用半管部に設けられた鍔状突部の外径より小径で且つ接続用半管部の外径より所定寸法大径な内径を有しているので、前記接続半管状体に設けられた鍔状係止突部の内径と２つの管本体の接続用半管部の外径との寸法差の範囲で２つの管本体を曲げることが可能となる。
【００１２】
請求項４に記載の組立式管体は、請求項３に記載の前記半管体の接続用半管部は、その外周面が、前記端部外周に突出する鍔状突部から前記半管体の半管本体部に向かって縮径するテーパ状となっていることを特徴とする。
【００１３】
このように接続用半管部の外周面が、テーパ状となっているので、接続用半管状体に設けられた鍔状係止突部の内径と２つの管本体の接続用半管部の外径との間に所定の間隔が空き、かかる間隔の範囲で２つの管本体を曲げることが可能となる。
【００１４】
請求項５に記載の組立式管体は、請求項１、２、３又は４に記載の前記接続半管状体の周方向両端の内方に突出して設けられている挿入片には、前記一対の接続半管状体で接続された管本体が相互に曲がったとき、前記挿入片が挿入されるスリットが形成されている半管体の接続用半管部の先端部の移動を許容する切欠部が形成されていることを特徴とする。
【００１５】
かかる構成から、一対の接続半管状体で接続された管本体が相互に曲がったときでも、半管体の接続用半管部の先端部が接続半管状体の挿入片に形成された切欠部に入ることから、大きな角度で曲がったとしても接続用半管部の先端部が接続半管状体の挿入片によって妨げられない。従って、管本体同士を大きく曲げて接続することができる。
【００１６】
請求項６に記載の組立式管体は、請求項１、２、３、４又は５に記載の前記一対の半管体の互いに対向する左右の割り面の各々を、一方の割り面には長手方向に沿って嵌合突部を設け、他方の割り面には長手方向に沿って前記嵌合突部が嵌合する嵌合溝を設けて構成したことを特徴とする。
【００１７】
かかる構成から、一対の半管体の互いに対向する左右の割り面のうちの一方の割り面と他方の割り面にそれぞれ設けられた嵌合突部と嵌合溝を嵌合して、一対の半管体をその凹面側で向かい合わせに突き合わせて管本体を仮接続すれば、双方の接続用半管部に、それぞれ外周から跨るようにして両側から一対の接続半管状体を嵌合する作業が容易となる。
【００１８】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて詳細に説明する。
図１は本発明に係る組立式管体の実施の形態の一例を示す正面図、図２は本例の組立式管体を構成する半管体の平面図、図３は図２に示された半管体の一部切り欠き側面図、図４は図２に示された半管体の底面側からの斜視図、図５は本例の組立式管体を構成する接続半管状体の断面図、図６は図５に示された接続半管状体の背面図である。
【００１９】
本例に係る組立式管体は、凹面側で向かい合わせに突き合わせて管本体１を構成する合成樹脂製の一対の半管体２，３と、凹面側で向かい合わせに突き合わせて管状体４を構成し、前記突き合わせた一対の半管体２，３を固定して管本体１を維持するとともに、該管本体１に同様に構成した他の管本体１を接続する合成樹脂製の一対の接続半管状体５，６とからなっている。
【００２０】
なお、本例では、一対の半管体２，３及び一対の接続半管状体５，６として、形状と寸法が同じ１種類の半管体２，３及び接続半管状体５，６を用いているが、説明の便宜上、両半管体２，３及び両接続半管状体５，６には異なる符号をそれぞれ付してある。
【００２１】
前記一対の半管体２，３は、半管本体部７，８と、半管本体部７，８の軸方向両端に延設した接続用半管部９，１０とからなっており、接続用半管部９，１０の軸方向の端部外周には外方向に突出する鍔状突部１１，１２が周方向に設けられ、更に接続用半管部９，１０には、該接続用半管部９，１０の軸方向の端部に開口するスリット１３，１４が形成されている。この接続用半管部９，１０の外周面１５，１６は、前記端部外周に突出する鍔状突部１１，１２から半管本体部７，８に向かって縮径するテーパ状となっている。
【００２２】
前記半管体２，３の一方の割り面１７ａ，１８ａには、長手方向に沿って嵌合突部１９，２０が設けられ、他方の割り面１７ｂ，１８ｂには長手方向に沿って嵌合突部１９，２０が嵌合する嵌合溝２１，２２が設けられており、一対の半管体２，３を凹面側で向かい合わせに突き合わせ、嵌合突部１９，２０が嵌合溝２１，２２に嵌合して管本体１を構成するようになっている。
【００２３】
前記一対の接続半管状体５，６にあっては、一対の半管体２，３を突き合わせて構成した管本体１と同様にして構成した他の管本体１の接続用半管部９，１０の外周に跨って嵌合可能となっており、その軸方向両端には、前記接続用半管部９，１０に設けられた鍔状突部１１，１２の内側に係止する鍔状係止突部２３，２４が内方に突出して設けられ、周方向両端には、前記突き合わせて管本体１を構成する一対の半管体２，３の接続用半管部９，１０に跨って双方の接続用半管部９，１０のスリット１３，１４に挿入される挿入片２５，２６が内方に突出して設けられている。
【００２４】
前記一対の接続半管状体５，６の軸方向両端に内方に向けて設けられた鍔状係止突部２３，２４は、前記２つの管本体１，１の接続用半管部９，１０に跨って嵌合したとき、２つの管本体１，１の接続用半管部９，１０に設けられた鍔状突部１１，１２と軸方向に所定の間隔を空けるように設けられている。また、前記鍔状係止突部２３，２４は、前記接続用半管部９，１０に設けられた鍔状突部１１，１２の外径より小径で且つ接続用半管部９，１０の外径より所定寸法大径な内径を有している。
【００２５】
また、前記接続半管状体５，６の周方向両端の内方に突出して設けられている挿入片２５，２６には、一対の接続半管状体５，６で接続された管本体１，１が相互に曲がったとき、前記挿入片２５，２６が挿入されるスリット１３，１４が形成されている半管体２，３の接続用半管部９，１０の先端部の移動を許容する切欠部２７，２８が形成されている
次に、このように構成された組立式管体の組み立てについて説明する。まず、一対の半管体２，３を凹面側で向かい合わせに突き合わせ、両半管体２，３の左右の割り面のうち、一方の割り面１７ａ，１７ｂに設けられた嵌合突部１９，２０を他方の割り面１８ａ，１８ｂに設けられた嵌合溝２１，２２に嵌合して、管本体１を構成する（図７）。
【００２６】
そして、管本体１の両側を構成している一対の接続用半管部９，１０に、それぞれ外周から跨るようにして一対の接続半管状体５，６の一方の接続半管状体５を嵌合し、該接続半管状体５の周方向両端に設けられている挿入片２５を樹脂の弾性変形を利用して双方の接続用半管部９，１０のスリット１３，１４に挿入する（図９）。また、同様にして一対の接続半管状体５，６の他方の接続半管状体６を前記一対の接続用半管部９，１０に反対側から嵌合し、該接続半管状体６の周方向両端に設けられている挿入片２６を樹脂の弾性変形を利用して双方の接続用半管部９，１０の前記スリット１３，１４に挿入する（図８、図９、図１０）。
【００２７】
これにより、前記一対の半管体２，３を突き合わせて構成した管本体１は、双方の接続用半管部９，１０に、それぞれ外周から跨るようにして両側から嵌合した一対の接続半管状体５，６により確実に接続固定される。そして、双方の接続用半管部９，１０に嵌合した一対の接続半管状体５，６は、その軸方向両端に設けられた鍔状係止突部２３，２４が前記接続用半管部９，１０に設けられた鍔状突部１１，１２の内側に係止するので、双方の接続用半管部９，１０から軸方向に抜け出るおそれがない。
【００２８】
また、一対の半管体２，３を突き合わせて構成した管本体１と、該管本体１に同様に構成した他の管本体１を接続する場合、一対の半管体２，３を突き合わせて構成した管本体１の開口端部と、同様に構成した他の管本体１の開口端部とを突き合わせた状態で、２つの管本体１，１の接続用半管部９，１０に、それぞれ外周から跨るようにして一対の接続半管状体５，６の一方の接続半管状体５を嵌合し、該接続半管状体５の周方向両端に設けられている挿入片２５を樹脂の弾性変形を利用して２つの接続用半管部９，１０のスリット１３，１４に挿入し、同様にして一対の接続半管状体５，６の他方の接続半管状体６を前記一対の接続用半管部９，１０に反対側から嵌合し、該接続半管状体６の周方向両端に設けられている挿入片２６を樹脂の弾性変形を利用して２つの接続用半管部９，１０の前記スリット１３，１４に挿入すると、前記一対の半管体２，３を突き合わせて構成した２つの突き合わせ状態にある管本体１，１は、２つの接続用半管部９，１０に、それぞれ外周から跨るようにして両側から嵌合した一対の接続半管状体５，６により確実に接続固定される（図１１、図１２）。そして、２つの接続用半管部９，１０に嵌合した一対の接続半管状体５，６は、その軸方向両端に設けられた鍔状係止突部２３，２４が前記２つの接続用半管部９，１０に設けられた鍔状突部１１，１２の内側に係止するので、２つの接続用半管部９，１０から軸方向に抜け出るおそれがなく、前記２つの管本体１，１は一対の接続半管状体５，６により確実に接続される。
【００２９】
なお、上述のように、一対の半管体２，３を突き合わせて構成した管本体１，１を一対の接続半管状体５，６によって接続固定する工程と、管本体１，１同士を接続固定する工程は、説明の便宜上別に説明したが、実際にはこれら２つの工程は同時に行われる。
【００３０】
前記のように構成された組立式管体によれば、管の組立を簡単な作業で容易に行うことができ、しかも管の組立工程と管同士の接続工程を同時に行うことができるので組み立て作業性が向上する。
【００３１】
また、前記一対の接続半管状体５，６の軸方向両端に内方に向けて設けられた鍔状係止突部２３，２４は、前記一対の半管体２，３により構成した管本体１と同様にして構成した他の管本体１の接続用半管部９，１０同士を突き合わせた状態で、該２つの管本体１，１の接続用半管部９，１０に跨って嵌合したとき、２つの管本体１，１の接続用半管部９，１０に設けられた鍔状突部１１，１２と軸方向に所定の間隔を空けるように設けられているので、一対の接続半管状体５，６により接続された２つの管本体１，１は、接続半管状体５，６の鍔状係止突部２３，２４と管本体１，１の接続用半管部９，１０の鍔状突部１１，１２との間の所定間隔内において軸方向に移動が可能となり、この範囲で接続された管本体１，１の全長の調整を行うことができる。
【００３２】
また、前記一対の接続半管状体５，６の軸方向両端に内方に突出して設けられている鍔状係止突部２３，２４は、前記接続用半管部９，１０に設けられた鍔状突部１１，１２の外径より小径で且つ接続用半管部９，１０の外径より所定寸法大径な内径を有しているので、接続半管状体５，６で一対の半管体２，３を突き合わせて構成した管本体１と、該管本体１に同様に構成した他の管本体１を接続したとき、前記接続半管状体５，６に設けられた鍔状係止突部２３，２４の内径と２つの管本体１，１の接続用半管部９，１０の外径との寸法差の範囲で２つの管本体１，１を曲げることが可能となる。
【００３３】
そして、前記接続半管状体５，６の周方向両端の内方に突出して設けられている挿入片２５，２６には、前記一対の接続半管状体５，６で接続された管本体１，１が相互に曲がったとき、前記挿入片２５，２６が挿入されるスリット１３，１４が形成されている半管体２，３の接続用半管部９，１０の先端部の移動を許容する切欠部２７，２８が形成されているので、前記のように、一対の接続半管状体５，６で接続された管本体１，１が相互に曲がったときでも、半管体２，３の接続用半管部９，１０の先端部が接続半管状体５，６の挿入片２５，２６に形成された切欠部２７，２８に入ることから、大きな角度で曲がったとしても接続用半管部９，１０の先端部が接続半管状体５，６の挿入片２５，２６によって妨げられず、管本体１，１同士を大きく曲げて接続することができる（図１３）。
【００３４】
更に、前記一対の半管体２，３の互いに対向する左右の割り面１７ａ，１７ｂ，１８ａ，１８ｂの各々を、一方の割り面１７ａ，１７ｂには長手方向に沿って嵌合突部１９，２０を設け、他方の割り面１８ａ，１８ｂには長手方向に沿って前記嵌合突部１９，２０が嵌合する嵌合溝２１，２２を設けて構成したので、一対の半管体２，３の互いに対向する左右の割り面のうちの一方の割り面１７ａ，１７ｂと他方の割り面１８ａ，１８ｂにそれぞれ設けられた嵌合突部１９，２０と嵌合溝２１，２２を嵌合して、一対の半管体２，３をその凹面側で向かい合わせに突き合わせて管本体１を仮接続すれば、双方の接続用半管部９，１０に、それぞれ外周から跨るようにして両側から一対の接続半管状体５，６を嵌合する作業が容易となる。
【００３５】
【発明の効果】
以上のように、本発明に係る組立式管体によれば、管の組立を簡単な作業で容易に行うことができ、しかも管の組立工程と管同士の接続工程を同時に行うことができるので組み立て作業性が向上するといった効果がある。
【図面の簡単な説明】
【図１】本発明に係る組立式管体の実施の形態の一例を示す正面図である。
【図２】本例の組立式管体を構成する半管体の平面図である。
【図３】図２に示された半管体の一部切り欠き側面図である。
【図４】図２に示された半管体の底面側からの斜視図である。
【図５】本例の組立式管体を構成する接続半管状体の断面図である。
【図６】図５に示された接続半管状体の背面図である。
【図７】本例の組立式管体を構成する一対の半管体の嵌合突部と嵌合溝を嵌合した状態を示す横断面図である。
【図８】半管体同士が接続半管状体によって接続された状態を示す一部切り欠き平面図である。
【図９】図８のＡ−Ａ線断面図である。
【図１０】図８の側面図である。
【図１１】２つの管本体を一対の接続半管状体によってを接続した状態を示す一部切り欠き平面図である。
【図１２】図１１のＢ−Ｂ線断面図である。
【図１３】接続された管本体同士を曲げた状態を示す説明図である。
【符号の説明】
１管本体
２，３半管体
４管状体
５，６接続半管状体
７，８半管本体部
９，１０接続用半管部
１１，１２鍔状突部
１３，１４スリット
１５，１６外周面
１７ａ，１７ｂ，１８ａ，１８ｂ割り面
１９，２０嵌合突部
２１，２２嵌合溝
２３，２４鍔状係止突部
２５，２６挿入片
２７，２８切欠部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a prefabricated pipe used mainly as a protective pipe for cables and the like.
[0002]
[Prior art]
As a conventional assembled pipe of this type, an engagement groove is formed on one of the opposed split surfaces of a pair of half-tubes, and the other is provided with an engagement groove on the other. The pair of half pipes are formed so as to face each other on the concave side, and the projections of the split surface of the other half pipe are engaged with the engagement grooves of the split surface of the one half pipe. 2. Description of the Related Art There are known assembling-type tubes that are assembled so as to be combined. In the case of laying the assembled pipe, there is a pipe which is connected and laid in such a manner that an open end thereof is inserted. In the case where the laying line has a bent portion, a pipe having a bent shape corresponding to the bent is prepared.
[0003]
[Problems to be solved by the invention]
According to the above-mentioned conventional assembling type tubular body, the connection and fixing of the pair of half tubular bodies is such that the projections of the split face of the other half tubular body are engaged with the engaging grooves of the split face of one half tubular body. Therefore, there is a possibility that it will come off when a strong external force is applied, and the protruding piece formed on the split surface is difficult to have a strength thinner than the thickness of the half pipe body, and it is difficult to increase this strength If this is the case, the thickness of the half-pipe must be increased more than necessary, and there is a problem that not only the material is wasted but also the weight becomes heavy, so that workability deteriorates. Also, in the laying of the assembled pipes, the pipes laid sequentially are only connected by inserting their open ends, so they are connected when a strong force such as earth and sand is applied at the time of embedding. There is a problem that the pipe may come off and the cables and the like passing through may be exposed. Also, if the laying line has a bent portion, it is necessary to prepare a bent-shaped tube body corresponding to this bend, so that an increase in manufacturing cost is unavoidable and handling becomes complicated. There's a problem. Furthermore, in the above-mentioned tube, there is a problem that adjustment of the length of the connected tube is not performed, and the length cannot be adjusted or is difficult.
[0004]
An object of the present invention is to fix a pair of abutted half-pipe bodies to maintain the pipe body, connect another similarly configured pipe body to the pipe body, and also bend and adjust the length. An object of the present invention is to provide an assembled tube.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the assembled tubular body according to claim 1 comprises a pair of semi-tubular bodies that face each other on a concave side to form a pipe main body, and a pair of half tubular bodies facing each other on a concave side. And a pair of synthetic resin connecting semi-tubular bodies for fixing the pair of butted semi-tubular bodies but maintaining the main pipe body and connecting another main pipe body similarly configured to the main pipe body. The pair of half-pipe bodies includes a half-pipe main body, and a connecting half-pipe portion extending at both ends in the axial direction of the half-pipe main body. A flange-shaped protrusion that protrudes outward is provided in the circumferential direction, and a slit that opens at an axial end of the connection half-tube portion is formed in the connection half-tube portion, In the case of a pair of connecting semi-tubular bodies, the pipe main body is formed by abutting the pair of semi-tubular bodies. It is possible to fit over the outer periphery of the connecting half-pipe portion of the other pipe main body configured as described above, and at both ends in the axial direction, inside the flange-shaped protrusion provided in the connecting half-pipe section A flange-shaped locking projection for locking is provided to protrude inward at a predetermined interval in the axial direction from a flange-shaped projection provided on the connecting half-pipe portion of the two pipe bodies, and is provided at both ends in the circumferential direction. The insertion piece inserted into the slits of the two connecting half-pipe portions across the connecting half-pipe portions of the pair of half-pipe bodies forming the pipe body in abutting manner is provided so as to protrude inward. It is characterized by.
[0006]
From such a configuration, a pair of half-pipe bodies are formed so as to face each other on the concave side to face each other, and a pair of connecting half-pipe portions constituting both sides of the pipe body are respectively straddled from the outer periphery. One connecting semi-tubular body of a pair of connecting semi-tubular bodies is fitted, and insert pieces provided at both ends in the circumferential direction of the connecting semi-tubular body are connected to each other by using elastic deformation of resin. And the other connecting semi-tubular body of the pair of connecting semi-tubular bodies is fitted to the pair of connecting semi-tubular portions from opposite sides in the same manner, and provided at both circumferential ends of the connecting semi-tubular body. When the inserted insert piece is inserted into the slits of the two connecting half-pipe portions by utilizing the elastic deformation of the resin, the pipe main body formed by abutting the pair of half-pipe bodies forms the two connecting half-pipe portions. A pair of connecting semi-tubular bodies fitted from both sides so as to straddle the outer circumference, respectively. It is more reliably connected and fixed. The pair of connecting semi-tubular bodies fitted to both the connecting half-pipe portions have flange-shaped locking projections provided at both ends in the axial direction of the connection semi-tubular bodies. Because there is no risk of slipping out of both connecting half pipes in the axial direction.
[0007]
Further, when connecting a pipe main body formed by abutting a pair of half-pipe bodies and another pipe main body similarly configured to the pipe main body, an opening end of the pipe body formed by abutting the pair of half-pipe bodies is provided. In a state where the opening ends of the other pipe bodies having the same configuration are abutted against each other, the connecting half pipe sections of the pair of connecting half tubular bodies are respectively laid on the connecting half pipe sections of the two pipe bodies so as to straddle from the outer periphery. The tubular bodies are fitted, and the insertion pieces provided at both ends in the circumferential direction of the connecting semi-tubular body are inserted into the slits of the two connecting half-pipe parts using elastic deformation of the resin. The other connecting semi-tubular body of the connecting semi-tubular body is fitted to the pair of connecting semi-tubular portions from opposite sides, and insert pieces provided at both ends in the circumferential direction of the connecting semi-tubular body are subjected to elastic deformation of the resin. When inserted into the slits of the two connecting half-pipe portions by utilizing the pair of half-pipe bodies, Pipe main body at the two abutting state configured Te Align is a semi-tube portion for the two connections, are securely connected and fixed by a pair of connecting semi-tubular body respectively fitted from both sides so as to straddle the outer periphery. The pair of connection semi-tubular bodies fitted to the two connection half-pipe portions have flange-shaped locking projections provided at both ends in the axial direction thereof, and have a flange-like shape provided at the two connection half-pipe portions. Since it is locked inside the protruding portion, there is no danger that the two pipe main bodies will fall out in the axial direction from the two connecting half pipe sections, and the two pipe main bodies are securely connected by a pair of connecting half pipe bodies. Further, in such an assembling pipe body, a step of fixing a pair of butted half pipe bodies to form a pipe body and a step of connecting another similarly configured pipe body to the pipe body are performed simultaneously. Therefore, assembly workability is good.
[0008]
According to a second aspect of the present invention, in the assembled tubular body, the flange-shaped locking projections provided inward at both axial ends of the pair of the connecting semi-tubular bodies according to the first embodiment are provided with the pair of half-tubes. In a state where the connecting half-pipe portions of the other pipe main bodies formed in the same manner as the pipe main body formed of the pipe bodies are abutted against each other, when they are fitted across the connecting half-pipe portions of the two pipe main bodies, 2 It is characterized in that it is provided so as to be spaced apart from the flange-shaped protrusion provided on the connecting half-pipe portion of the two pipe bodies by a predetermined distance in the axial direction.
[0009]
With such a configuration, the two pipe bodies connected by the pair of connecting half-tubular bodies are provided between the flange-shaped locking projection of the connecting half-tubular body and the flange-shaped projection of the connecting half-tube part of the pipe body. It is possible to move in the axial direction within the interval, and it is possible to adjust the total length of the connected pipe main bodies in this range.
[0010]
According to a third aspect of the present invention, in the assembled tubular body according to the first or second aspect, the flange-shaped locking projections provided inwardly at both ends in the axial direction of the pair of connecting semi-tubular bodies are provided. It is characterized in that it has an inner diameter smaller than the outer diameter of the flange-shaped projection provided on the connecting half-pipe portion and larger than the outer diameter of the connecting half-pipe portion by a predetermined dimension.
[0011]
With such a configuration, when a pipe main body formed by abutting a pair of half pipes with a connecting semi-tubular body and another pipe main body similarly configured to the pipe main body are connected, a flange provided on the connection semi-tubular body The locking projection has an inner diameter smaller than the outer diameter of the flange-shaped projection provided on the connecting half-pipe portion of the two pipe bodies and having a predetermined diameter larger than the outer diameter of the connecting half-pipe. Therefore, the two pipe bodies can be bent within a range of a dimensional difference between the inner diameter of the flange-shaped locking projection provided on the connecting semi-tubular body and the outer diameter of the connecting half pipe section of the two pipe bodies. It becomes.
[0012]
According to a fourth aspect of the present invention, there is provided an assembly-type pipe body, wherein a half pipe portion for connection of the half pipe body according to the third aspect has an outer peripheral surface formed from a flange-shaped protrusion projecting to the outer periphery of the end portion. It is characterized in that it has a tapered shape whose diameter decreases toward the half tube main body of the body.
[0013]
As described above, since the outer peripheral surface of the connecting half-pipe portion is tapered, the inner diameter of the flange-shaped locking projection provided on the connecting semi-tubular body and the connecting half-pipe portion of the two pipe bodies are formed. A predetermined space is provided between the tube body and the outer diameter, and the two pipe bodies can be bent in the range of the space.
[0014]
The assembled tubular body according to claim 5 is configured such that the insertion piece projecting inward at both ends in the circumferential direction of the connecting semi-tubular body according to claim 1, 2, 3, or 4 includes the pair of inserts. A notch for allowing movement of the distal end of the connecting half-pipe portion of the half-pipe where the slit into which the insertion piece is inserted is formed when the pipe bodies connected by the connecting half-pipe are bent mutually. Is formed.
[0015]
With such a configuration, even when the pipe bodies connected by the pair of connecting semi-tubular bodies are mutually bent, the notch formed in the insertion piece of the connecting semi-tubular body has a distal end portion of the connecting semi-tubular portion of the semi-tubular body. Therefore, even if the connecting portion is bent at a large angle, the distal end portion of the connecting half-tube portion is not hindered by the insertion piece of the connecting semi-tubular body. Therefore, the pipe bodies can be connected to each other by being greatly bent.
[0016]
According to a sixth aspect of the present invention, there is provided a prefabricated pipe body, wherein each of the left and right split surfaces facing each other of the pair of half pipe bodies according to the first, second, third, fourth, or fifth aspect is provided with one split surface. A fitting protrusion is provided along the longitudinal direction, and a fitting groove for fitting the fitting protrusion is provided along the longitudinal direction on the other split surface.
[0017]
From such a configuration, the fitting protrusions and the fitting grooves provided on one of the left and right split surfaces of the pair of half pipes, which are opposed to each other, are fitted to each other to form a pair of half pipes. If the pipe main bodies are temporarily connected by abutting the half pipes face-to-face on the concave side thereof, an operation of fitting a pair of connection half pipes from both sides to both connection half pipes so as to straddle each from the outer periphery. Becomes easier.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view showing an example of an embodiment of a prefabricated pipe according to the present invention, FIG. 2 is a plan view of a half pipe constituting the prefabricated pipe of this example, and FIG. 3 is shown in FIG. FIG. 4 is a perspective view from the bottom side of the half-pipe shown in FIG. 2, and FIG. 5 is a perspective view of the connecting half-pipe which constitutes the assembled pipe of this embodiment. 6 is a rear view of the connecting semi-tubular body shown in FIG.
[0019]
The assembled tubular body according to the present embodiment has a pair of synthetic resin half-tubes 2 and 3 constituting the tube main body 1 facing each other on the concave side, and a tubular body 4 facing each other on the concave side. A pair of synthetic resin connections for fixing the pair of half pipes 2 and 3 butted together to maintain the pipe main body 1 and connect another pipe main body 1 similarly configured to the pipe main body 1. It consists of semi-tubular bodies 5,6.
[0020]
In this example, as the pair of semi-tubular bodies 2 and 3 and the pair of connecting semi-tubular bodies 5 and 6, one kind of semi-tubular bodies 2 and 3 and connecting semi-tubular bodies 5 and 6 having the same shape and dimensions are used. However, for convenience of explanation, the two half tubes 2, 3 and the two connecting half tubes 5, 6 are given different reference numerals.
[0021]
The pair of half-pipe bodies 2 and 3 include half-pipe main bodies 7 and 8 and connection half-pipe sections 9 and 10 extending at both axial ends of the half-pipe main bodies 7 and 8, respectively. The flange-shaped projections 11 and 12 protruding outward are provided on the outer periphery of the end portions in the axial direction of the half pipe portions 9 and 10 in the circumferential direction. Slits 13 and 14 are formed at the axial ends of the half-pipe portions 9 and 10, respectively. The outer peripheral surfaces 15 and 16 of the connecting half-pipe portions 9 and 10 are tapered so as to decrease in diameter from the flange-shaped protrusions 11 and 12 protruding to the outer periphery of the end portions toward the half-pipe main bodies 7 and 8. I have.
[0022]
Fitting projections 19 and 20 are provided on one of the split surfaces 17a and 18a of the half pipes 2 and 3 along the longitudinal direction, and are fitted on the other split surfaces 17b and 18b along the longitudinal direction. Fitting grooves 21 and 22 into which the projections 19 and 20 are fitted are provided, and the pair of half pipes 2 and 3 are faced to face each other on the concave side, and the fitting projections 19 and 20 are fitted into the fitting grooves 21. , 22 to form the tube body 1.
[0023]
In the pair of connecting semi-tubular bodies 5 and 6, the connecting half-pipe portion 9 of another pipe main body 1 configured in the same manner as the pipe main body 1 configured by abutting the pair of semi-tubular bodies 2 and 3. 10 can be fitted over the outer periphery thereof, and at both ends in the axial direction, flange-shaped engagement members which are locked inside flange-shaped projections 11 and 12 provided on the connection half-pipe portions 9 and 10, respectively. Stop projections 23 and 24 are provided so as to protrude inward, and straddle the connecting half pipe sections 9 and 10 of the pair of half pipe bodies 2 and 3 constituting the pipe body 1 at the circumferential ends at the opposite ends. Inserting pieces 25 and 26 inserted into the slits 13 and 14 of both the connecting half pipe sections 9 and 10 are provided to protrude inward.
[0024]
The flange-shaped locking projections 23 and 24 provided inward at both ends in the axial direction of the pair of connecting semi-tubular bodies 5 and 6 are connected to the connecting semi-tubular sections 9 and 9 of the two pipe bodies 1 and 1, respectively. When fitted over straddle 10, they are provided so as to be spaced apart from flange-shaped projections 11, 12 provided on connecting half-pipe portions 9, 10 of two pipe bodies 1, 1 by a predetermined distance in the axial direction. I have. The flange-shaped locking projections 23 and 24 have a diameter smaller than the outer diameter of the flange-shaped projections 11 and 12 provided on the connection half-pipe portions 9 and 10 and are smaller than those of the connection half-pipe sections 9 and 10. It has an inner diameter that is larger than the outer diameter by a predetermined dimension.
[0025]
In addition, insert pieces 25 and 26 projecting inward from both ends in the circumferential direction of the connection semi-tubular bodies 5 and 6 are connected to the pipe bodies 1 and 1 connected by the pair of connection semi-tubular bodies 5 and 6. Notches that allow the distal ends of the connecting half-pipe portions 9 and 10 of the half-pipe bodies 2 and 3 in which the slits 13 and 14 are formed to be inserted when the insertion pieces 25 and 26 are bent. Next, assembling of the assembled tubular body configured as described above will be described. First, a pair of half pipes 2 and 3 are faced to face each other on the concave side, and fitting projections 19 provided on one of the left and right split faces 17a and 17b of the two half pipes 2 and 3 are provided. , 20 are fitted into fitting grooves 21, 22 provided in the other split surfaces 18 a, 18 b to form the tube body 1 (FIG. 7).
[0026]
Then, one connecting half-tubular body 5 of the pair of connecting half-tubular bodies 5 and 6 is fitted to a pair of connecting half-tubular parts 9 and 10 constituting both sides of the pipe main body 1 so as to straddle from the outer circumference. At the same time, the insertion pieces 25 provided at both ends in the circumferential direction of the connecting semi-tubular body 5 are inserted into the slits 13 and 14 of both the connecting semi-tubular parts 9 and 10 using elastic deformation of the resin (FIG. 9). Similarly, the other connecting half-tubular body 6 of the pair of connecting half-tubular bodies 5 and 6 is fitted into the pair of connecting half-tube sections 9 and 10 from opposite sides, and the circumference of the connecting half-tubular body 6 is Inserting pieces 26 provided at both ends in the direction are inserted into the slits 13 and 14 of both connecting half-pipe portions 9 and 10 by utilizing elastic deformation of the resin (FIGS. 8, 9 and 10).
[0027]
As a result, the pipe main body 1 formed by abutting the pair of half pipes 2 and 3 has a pair of connection halves fitted on both connection half pipe portions 9 and 10 from both sides so as to straddle the outer circumference thereof. The tubular bodies 5 and 6 securely connect and fix. The pair of connecting semi-tubular bodies 5 and 6 fitted to the two connecting half-pipe parts 9 and 10 respectively have flange-shaped locking projections 23 and 24 provided at both ends in the axial direction thereof. Since it locks inside the flange-shaped protrusions 11 and 12 provided in the parts 9 and 10, there is no possibility that it will fall out in the axial direction from both connecting half pipe parts 9 and 10.
[0028]
Further, when connecting a pipe main body 1 formed by abutting a pair of half pipes 2 and 3 to another pipe main body 1 similarly configured to the pipe main body 1, a pair of the half pipes 2 and 3 are connected to each other. In a state where the open end of the configured tube main body 1 and the open end of another similarly configured tube main body 1 abut against each other, the connecting half-tube portions 9 and 10 of the two tube main bodies 1 and 1 are respectively connected to One connecting semi-tubular body 5 of the pair of connecting semi-tubular bodies 5 and 6 is fitted so as to straddle from the outer periphery, and the insertion pieces 25 provided at both circumferential ends of the connecting semi-tubular body 5 are made of resin elastic. Utilizing the deformation, it is inserted into the slits 13 and 14 of the two connecting semi-tubular parts 9 and 10, and the other connecting semi-tubular body 6 of the pair of connecting semi-tubular bodies 5 and 6 is similarly connected to the pair of connecting semi-tubular parts 5 and 6. Inserting pieces 26 provided at both ends in the circumferential direction of the connecting semi-tubular body 6 are fitted to the semi-tubular portions 9 and 10 from opposite sides. When the pair of half pipes 2 and 3 are inserted into the slits 13 and 14 of the two connecting half pipes 9 and 10 by utilizing the elastic deformation of the two pipe halfs 9 and 10, the pipe main body 1 is in two butted states. , 1 are securely connected and fixed to the two connecting half-pipe portions 9 and 10 by a pair of connecting half-pipe bodies 5 and 6 fitted from both sides so as to straddle from the outer circumference, respectively (FIGS. 11 and 12). ). A pair of connecting semi-tubular bodies 5, 6 fitted to the two connecting half-pipe portions 9, 10 have flange-shaped locking projections 23, 24 provided at both ends in the axial direction thereof. The two pipe main bodies 1 and 2 are secured to the inside of the flange-shaped projections 11 and 12 provided on the half pipe sections 9 and 10, respectively, so that there is no possibility of the two pipe halfs 9 and 10 coming off in the axial direction. , 1 are securely connected by a pair of connecting semi-tubular bodies 5,6.
[0029]
As described above, the step of connecting and fixing the pipe bodies 1, 1 formed by abutting the pair of half pipes 2, 3 by the pair of connecting half pipes 5, 6 and connecting the pipe bodies 1, 1 to each other The fixing step has been described separately for convenience of explanation, but actually, these two steps are performed simultaneously.
[0030]
According to the assembling type tubular body configured as described above, the assembling of the pipes can be easily performed with a simple operation, and the steps of assembling the pipes and connecting the pipes can be performed simultaneously. The performance is improved.
[0031]
Further, flange-shaped locking projections 23 and 24 provided inward at both ends in the axial direction of the pair of connecting semi-tubular bodies 5 and 6 are pipe bodies constituted by the pair of semi-tubular bodies 2 and 3. In a state where the connecting half-pipe portions 9 and 10 of the other pipe main body 1 configured in the same manner as in FIG. In this case, the flanges 11 and 12 provided on the connecting half-pipe portions 9 and 10 of the two pipe bodies 1 and 1 are provided at a predetermined interval in the axial direction. The two pipe bodies 1, 1 connected by the semi-tubular bodies 5, 6 are connected to the flange-shaped locking projections 23, 24 of the connecting semi-tubular bodies 5, 6 and the connecting half-pipe section 9, 9, It is possible to move in the axial direction within a predetermined interval between the ten flange-shaped protrusions 11 and 12, and to adjust the total length of the connected pipe bodies 1 and 1 in this range. Ukoto can.
[0032]
Further, flange-shaped locking projections 23 and 24 protruding inward at both ends in the axial direction of the pair of connecting semi-tubular bodies 5 and 6 are provided on the connecting half-tubular sections 9 and 10. The connecting semi-tubular bodies 5 and 6 have a pair of half-tubes because the connecting semi-tubular bodies 5 and 6 have an inner diameter smaller than the outer diameter of the flange-shaped protrusions 11 and 12 and larger than the outer diameter of the connecting half-pipe parts 9 and 10 by a predetermined dimension. When a pipe main body 1 formed by abutting the pipe bodies 2 and 3 and another pipe main body 1 similarly configured to the pipe main body 1 are connected to each other, the flange-shaped latch provided on the connection semi-tubular bodies 5 and 6 is provided. The two pipe bodies 1, 1 can be bent within a range of a dimensional difference between the inner diameters of the projections 23, 24 and the outer diameters of the connecting half pipe sections 9, 10 of the two pipe bodies 1, 1.
[0033]
The inserts 25 and 26 projecting inward from both ends in the circumferential direction of the connecting semi-tubular bodies 5 and 6 are connected to the pipe bodies 1 and 2 connected by the pair of connecting semi-tubular bodies 5 and 6. When the bent portions 1 are mutually bent, the distal ends of the connecting half pipe portions 9 and 10 of the half pipe bodies 2 and 3 in which the slits 13 and 14 into which the insertion pieces 25 and 26 are inserted are allowed. Since the cutouts 27 and 28 are formed, even when the pipe bodies 1 and 1 connected by the pair of connecting half-tubular bodies 5 and 6 are mutually bent as described above, the half-pipe bodies 2 and 3 are not bent. Since the distal ends of the connecting half-pipe portions 9 and 10 enter the cutouts 27 and 28 formed in the insertion pieces 25 and 26 of the connecting semi-tubular bodies 5 and 6, the connecting half-pipe is bent even at a large angle. The distal ends of the parts 9, 10 are not hindered by the inserts 25, 26 of the connecting semi-tubular bodies 5, 6, It can be connected to each other greatly bent (Figure 13).
[0034]
Further, each of the left and right split surfaces 17a, 17b, 18a, 18b of the pair of half pipes 2, 3 facing each other is fitted to one of the split surfaces 17a, 17b along the longitudinal direction. 20 is provided, and the other split surfaces 18a, 18b are provided with fitting grooves 21, 22 in which the fitting projections 19, 20 are fitted along the longitudinal direction. The fitting protrusions 19, 20 provided on one of the left and right split surfaces 17a, 17b and the other split surfaces 18a, 18b of the left and right split surfaces 3 and the fitting grooves 21, 22 are fitted. If the pair of half-pipe bodies 2 and 3 are opposed to each other on the concave side to temporarily connect the pipe main body 1, the two half-pipe sections 9 and 10 are connected to both connection half-pipe sections 9 and 10 from both sides so as to straddle from the outer circumference. The work of fitting the pair of connecting semi-tubular bodies 5, 6 is facilitated.
[0035]
【The invention's effect】
As described above, according to the assembling type pipe body according to the present invention, the assembling of the pipes can be easily performed by a simple operation, and the steps of assembling the pipes and connecting the pipes can be performed simultaneously. There is an effect that the assembling workability is improved.
[Brief description of the drawings]
FIG. 1 is a front view showing an example of an embodiment of an assembled tube according to the present invention.
FIG. 2 is a plan view of a half-pipe constituting the prefabricated pipe of the present embodiment.
FIG. 3 is a partially cutaway side view of the half-pipe shown in FIG. 2;
FIG. 4 is a perspective view of the half pipe shown in FIG. 2 as viewed from the bottom side.
FIG. 5 is a cross-sectional view of a connecting semi-tubular body constituting the assembled tubular body of the present embodiment.
FIG. 6 is a rear view of the connecting semi-tubular body shown in FIG. 5;
FIG. 7 is a cross-sectional view showing a state in which a fitting protrusion and a fitting groove of a pair of half pipes constituting the assembly type tubular body of the present embodiment are fitted.
FIG. 8 is a partially cutaway plan view showing a state in which the semi-tubular bodies are connected by a connecting semi-tubular body.
FIG. 9 is a sectional view taken along line AA of FIG. 8;
FIG. 10 is a side view of FIG. 8;
FIG. 11 is a partially cutaway plan view showing a state where two pipe bodies are connected by a pair of connecting semi-tubular bodies.
FIG. 12 is a sectional view taken along line BB of FIG. 11;
FIG. 13 is an explanatory view showing a state in which connected tube bodies are bent.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pipe main body 2, 3 Half-pipe 4 Tubular body 5, 6 Connection semi-tubular body 7, 8 Half-pipe main part 9, 10, Half-pipe part 11,12 Flange-like protrusion 13,14 Slit 15,16 Outer peripheral surface 17a, 17b, 18a, 18b Split surfaces 19, 20 Fitting projections 21, 22 Fitting grooves 23, 24 Flange-shaped locking projections 25, 26 Insert pieces 27, 28 Notch

Claims

A pair of half-pipe bodies that face each other on the concave side to form a tube body, and a tubular body that face-to-face each other on the concave side to fix the pair of butted half pipe bodies to maintain the pipe body And a pair of synthetic resin connecting semi-tubular bodies for connecting another pipe body similarly configured to the pipe body,
The pair of half-pipe bodies are composed of a half-pipe main body, and a connecting half-pipe portion extending at both axial ends of the half-pipe main body. Is provided with a flange-shaped protrusion projecting outwardly in the circumferential direction, and a slit is formed in the connection half-pipe portion at an axial end of the connection half-pipe section,
In the pair of connecting semi-tubular bodies, a pipe main body formed by abutting the pair of semi-tubular bodies can be fitted over the outer periphery of a connecting half-pipe portion of another pipe main body configured in the same manner. At both ends in the axial direction, flange-shaped locking projections that lock inside the flange-shaped projections provided on the connecting half-pipe portion are provided so as to protrude inward, and both ends in the circumferential direction are provided. Is provided with an insertion piece that protrudes inward and that is inserted into the slits of the two connecting half-pipe portions across the connecting half-pipe portion of the pair of half-pipe bodies that form the pipe body in abutting relationship. A prefabricated tube characterized by the above-mentioned.

The flange-shaped locking projections provided inward at both ends in the axial direction of the pair of connecting semi-tubular bodies are provided in the same manner as the tubular main body constituted by the pair of semi-tubular bodies. In a state where the connecting half-pipe portions are abutted with each other, when fitting over the connecting half-pipe portions of the two pipe main bodies, a flange-shaped projection provided on the connecting half-pipe portion of the two pipe main bodies is provided. The assembly type tubular body according to claim 1, wherein the tubular body is provided so as to have a predetermined interval in an axial direction.

The flange-shaped locking projections provided to project inward at both ends in the axial direction of the pair of connection semi-tubular bodies have a smaller diameter than the outer diameter of the flange-shaped projections provided in the connection half-tube section, and The assembly type tubular body according to claim 1 or 2, wherein the inner diameter has a predetermined diameter larger than the outer diameter of the connecting half-pipe portion.

The connecting half-pipe portion of the half-pipe body has an outer peripheral surface having a tapered shape whose diameter is reduced from a protrusion projecting to the outer periphery of the end toward the half-pipe main body of the half-pipe body. The assembled tube according to claim 3, characterized in that:

The insertion piece is provided to protrude inward at both ends in the circumferential direction of the connecting semi-tubular body, when the pipe body connected by the pair of connecting semi-tubular bodies bends each other, the insertion piece is inserted. The assembly type according to claim 1, 2, 3, or 4, wherein a cut-out portion is formed to allow movement of a distal end portion of a connecting half-tube portion of the half-tube body having a slit formed therein. Tube.

Each of the left and right split surfaces of the pair of half pipes facing each other is provided with a fitting protrusion on one split surface along the longitudinal direction, and the fitting is formed on the other split surface along the longitudinal direction. The assembly type tubular body according to any one of claims 1, 2, 3, 4, and 5, wherein the projection is provided with a fitting groove for fitting.