JP2004150145A - Piping work execution method - Google Patents

Piping work execution method Download PDF

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Publication number
JP2004150145A
JP2004150145A JP2002317154A JP2002317154A JP2004150145A JP 2004150145 A JP2004150145 A JP 2004150145A JP 2002317154 A JP2002317154 A JP 2002317154A JP 2002317154 A JP2002317154 A JP 2002317154A JP 2004150145 A JP2004150145 A JP 2004150145A
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JP
Japan
Prior art keywords
water
pipe
joint
water pipe
protection
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JP2002317154A
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Japanese (ja)
Inventor
Ryota Imamiya
亮太 今宮
Masatoshi Enoki
正寿 榎
Muneo Araki
宗雄 荒木
Tomoaki Yamaura
智章 山浦
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Toto Ltd
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Toto Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a piping work execution method for water supply/hot water supply in a house for reducing connecting work of a water supply/hot water supply pipe at a construction site, minimizing damage by water leakage, and replaceable without removing a wall plate and a floorboard when replacing a water feeding pipe by solving the problems of having fear of boring a hole in the pipe by occasionally driving a nail in the water feeding pipe by mistake since a worker must perform work by making a guess without visually confirming an accurate position of a skeleton when driving and fixing a floor and a wall to the skeleton such as a column by the nail. <P>SOLUTION: A joint is connected in advance to both ends of the flexible water feeding pipe, and after laying a protective pipe, the water feeding pipe is inserted into the protective pipe, and the joint connected to both ends of the water feeding pipe is connected to a water feeding apparatus. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、住宅などの建物に用いられる通水管の配管施工方法に関する。
【0002】
【従来の技術】
従来の住宅などの建物に用いられる通水管の例を以下に説明する。図15は従来の保護管付管の外観図、図16は従来の保護管付管の施工状態斜視図である。例えば図15のように所定の長さの通水管1に合成樹脂製の保護管2が工場などで事前に外嵌されるとともに前記通水管1の両端にも事前に継手3が接続され、この継手3により通水管1が保護管2内から抜け外れないように構成された保護管付の管というものがある。これは通水管1と継手3の接続という煩雑な作業を施工現場からなくすことを目的としており、施工現場では図16のように通水管1の両端に接続されている継手3をヘッダー118のヘッダー側継手6または末端側継手7などの通水器具に接続するようになっている。
(特許文献1参照。)
また図示はしないが別の例として、通水管の一端に水栓が予め取り付けられ、他端には何も接続されていないものが提案されている。これは、通水管と水栓との接続作業を現場からなくすというものであり、施工現場において保護管を予め配管した後に、通水管を何も接続していない端部より保護管内に挿通する。この通水管は必要な長さより長くしてあるため、他端に接続されている水栓を設置位置に固定した後、通水管端部をヘッダーまでの必要長さに切断しヘッダーに接続する施工方法をとっている。
(特許文献2参照。)
【0003】
【特許文献1】
特開平4−92191(第1−3、第1、2図)
【特許文献2】
特開平2000−34752(第3−4頁、第2図)
【0004】
【発明が解決しようとする課題】
しかしながら前記構成では下記の課題を有している。
(第一課題)
前記特開平4−92191号の管を用いると、まず予め保護管に挿通された通水管を建築現場に施工する。これは柱等の建築骨組を組立後、管をこの骨組みにサドル等を使用して骨組みに沿って固定する。次に柱等の骨組みに床や壁を釘等でを打ち付けて固定する。これは床板や壁板を骨組に押さえつけた状態で釘打ちを行うことになるが、このとき作業者は室内側より作業を行うため、骨組みの正確な位置が目視できるわけではなく、見当をつけて作業をすることになる。このときに誤って通水管に釘を打ってしまい、管に穴を開けてしまう恐れがある。この場合、管に穴が開いていることは住宅の完成後に水道の元栓を開き、水使用器具を使用するまで判らない。また管は壁裏もしくは床下という隠蔽部にあるため、そのままでは管の漏水部位すなわち管に釘が打たれている部位が特定できず、漏水部分を取り替える作業が必要となる場合は、住宅が完成した後に壁板や床板を剥がすという大掛かりな工事をすることになり、多大なコストが発生する。
【0005】
(第二課題)
また前記特開平4−92191号の管を用いると、配管の取り替えの際に問題を生じる。前述のように管の新設時は予め保護管2に挿通された通水管1を建築骨組みに沿って固定し、壁床の施工を行った後、両端部の継手3を使用して水栓やヘッダー118等の通水器具と接続する。通水管1は建築骨組みより寿命が短く、経年後通水管1を取替える必要がある。このときは前記通水管1端部の継手3の一方を切断して他方より保護管2から通水管1のみを引き抜いた後、新しい通水管1を保護管2に挿通して端部に継手3を接続する。その後前記継手3と通水器具を接続することになる。しかしながらこの方法では通水管1を保護管2に挿通する際は両者の間に発生する摩擦抵抗に抗する力を加えなくてはならない。この施工方法では管の新設の際に挿通時の摩擦抵抗を確認せずに保護管2を通水管1と共に固定するため、保護管2の曲がりが多い場合や曲げ半径が小さい場合では取り替えの際に摩擦抵抗の大きさに抗するだけの挿通力で挿通できず、やむなく壁床等を剥がして保護管2の固定位置を移動する必要があり、多大なコストが発生するという問題がある。
【0006】
(第三課題)
さらに、特開平2000−34752号では、通水管1の一端にしか通水器具が接続されておらず他端には何も接続されていないため、施工現場で通水管1とヘッダー118など他の通水器具を接続することになる。施工現場での通水管1の接続作業には施工ミスや通水管1端部の傷つきにより漏水の恐れがあり、その接続部の水密性を確認をするために接続作業後、耐圧検査を実施する必要がある。この施工現場での耐圧検査の要領を以下に説明する。まず通水管1両端部を塞いで通水管1内部を密閉状態としたうえで、耐圧検査機から通水管に水を送り込んで圧力をかけ、一定時間(通常1時間程度)内で接続部から漏水がないことを確認する。これは手間と労力が非常にかかる作業になる。
【0007】
(第四課題)
さらに特開平2000−34752号では耐圧検査にて漏水が発見された場合の処理が大変である。通水管1と通水器具との接続構造は通水管1との取り外し不可能なものと可能なものがあるが、前者では接続をやり直す場合、通水管1を途中で切断する必要があり、後者では取り外したのち傷を有する端部を切断しなくてはならない。いずれにしても当初調整を行い最良の長さにした管長が短くなり、この通水管1の長さが不足するため使用できず、一端に水栓が接続されている通水管1を新たに手配しなくてはならない。これはコストがかかるのみではなく、手配した後、前記水栓が接続されている通水管1を入手するまで建築工期が延びてしまうことや、使用不可能になった配管という廃棄物が建築現場にて発生してしまうという問題を有している。
そこで本発明では上記の問題点を解決するため、施工現場での給水・給湯管の接続作業を削減でき、漏水による被害を最小限に抑えるとともに、通水管の取替えの際も、壁板や床板を取り外すことなく取り替えできる住宅における給水・給湯の配管施工方法を提供するものである。
【0008】
【課題を解決するための手段】
上記問題を解決するため本発明の請求項1では、配管施工方法において可撓性を有する通水管の両端に継手を予め接続し、保護管を敷設した後に前記通水管を前記保護管内に挿通し、前記通水管の両端に接続した継手を通水器具に接続するようにした。
【0009】
これにより、予め継手が接続された通水管を施工現場へ出荷する前に、接続部分の漏水確認を工場で行うことができる。また施工された保護管に対し通水管を保護管に挿通しているため、挿通できることの確認を行うことができる。
【0010】
本発明の請求項2では、配管施工方法において可撓性を有する通水管の両端に継手を予め接続し、保護管を敷設した後に壁板または床板などの建築部材を施工し、次に前記通水管を前記保護管内に挿通し、前記通水管の両端に接続した継手を通水器具に接続するようにした。
【0011】
これにより、予め継手が接続された通水管を施工現場へ出荷する前に、接続部分の漏水確認を工場で行うことができる。また施工された保護管に対し通水管を保護管に挿通しているため、挿通できることの確認を行うことができる。また、壁板または床板などの建築部材の施工の際に誤って保護管敷設位置に釘を打った場合でも、この時点では保護管しか敷設しておらず通水管へは釘打ちされない。
【0012】
本発明の請求項3では、配管施工方法において前記通水管の一端は、通水器具が予め接続されているようにした。
【0013】
これにより施工現場では通水管の一端において通水器具と継手との接続作業が不要になる。
【0014】
【発明の実施の形態】
本発明の実施の形態1について、以下の図に基づいて説明を行う。
図2は本発明の実施の形態1における通水管16の一部断面外観図である。この通水管16を以下に製作手順に沿って説明する。まず架橋ポリエチレンにて成形された通水管16の両端に継手15の一端をカシメ接続する。この継手15の他端は略円筒状の凸形状をなし、内周部は通水用の空間を形成すると共に外周部にはシール部材17であるOリングが2個配置されている。後述するが通水器具との接続時は通水器具の接続部の円筒形内周に前記シール部材17が圧接され水密状態にシールすることになる。この状態にて通水管16と継手15は水密に接続されおり、両端の継手から水圧を印加することによる漏水の検査を行う。前記検査にて漏水の無いことを確認した後、シール部材17の傷つき防止のための保護カバー18を取り付ける。この通水管16は所定の長さごとにまとめて製作しておくことができる。本例では、1m、2mと1m毎に製作しておく。このようにすることにより一本あたりの製作コストを抑えることができる。また複数の長さの通水管16を保管するため、通水管16の長さを記載した表示ラベル19を両端の継手15に貼り付けている。このようにすることにより倉庫での保管時に容易に識別できる。またこの長さの記載方法には数字(1m、2m等)や、記号(○、×、△等)、色等さまざまな方法があり、状況によって使い分けをすることができる。
【0015】
前述のようにして製作した通水管16を施工現場にて施工する手順について説明する。図1は本発明の実施の形態1における配管施工完了状態の概念図である。図1において上水道の給水本管から分岐された給水主管は水道メーター13を介して水圧を一定圧力に減圧する減圧弁ユニット14に接続配管される。ここで2本の配管に分岐され一方は給湯機100を介して、また他方は直接、各々湯水のヘッダー9に接続配管される。またヘッダー9からは直接、または配管により途中に通水エルボ39等の中間部材を経由して各水使用場所の水栓等の末端器具10に接続配管される。これらの水道メーター13、減圧弁ユニット14、ヘッダー9、通水エルボ39、末端器具10はいずれも水または湯が通る通水器具である。この各通水器具間の接続配管として、前記図2に記載の通水管16が配管される。施工手順としてはまず建築躯体に保護管8をサドル101を使用して固定したのち通水管16を保護管8に挿通する。この手順について図3を用いて説明する。図3は保護管8端部に通水管16を挿通する際の断面図である。図3において、通水管16の端部には継手15の一端が接続されており他端の前記円筒状凸形状部には、一端に穴27を有する半球部25を備える挿通保護キャップ24が接続されている。この円筒状凸形状内周部は雌ネジ部30を有しており、ここに端部の雄ネジ部29をねじ込んだ状態で案内ガイド26が穴27を貫通して接続されている。この挿通保護キャップ24は前記図2の保護カバー18とは異なる。これは保護カバー18は通水管16の保管時や輸送時のシール部材17の傷つきを防止することが目的であるのに対し、挿通保護キャップ24は保護管8へ通水管を挿通する際のシール部材17の保護が目的であり、施工現場にて取り替えられる。挿通保護キャップ24の端部は前述のように半球形状をしているため保護管8に挿通する際に保護管8との摩擦による挿通抵抗が小さくなる。また、前記案内ガイド26は柔軟性をもつ棒形状をしており紡錘形状をした先端部28を有する。このため、保護管8への挿通時にこの案内ガイド26が保護管8に沿って曲がり、継手15即ち通水管16の挿通がしやすくなる。また前述のように案内ガイド26の端部の雄ネジ部29を継手15の雌ネジ部30に直接接続しているため、挿通時に案内ガイド26に力が加わっても挿通保護キャップ24には力がかからない。このため挿通保護キャップ24を継手15にネジ等で強固に固定する必要は無く、継手15の円筒状凸形状部にかぶせるだけでよい。これにより作業が非常に簡単である。さらに挿通する際には通水管16の周囲に消音テープ31を巻きながら押し込んでいく。この消音テープ31は、末端に位置する水栓金具などが止水時の急閉止によって発生する水撃作用による騒音を低減する働きをする。このように通水管16を挿通していくと通水管16の先端の継手15は保護管8の他端に接続された給水ボックス33に達する。この給水ボックス33は壁内に壁面室内側に開口部を有する状態で固定されている。
【0016】
挿通作業を終了後、給水ボックス33に通水部材の一つである通水エルボ39を取り付ける。このことについて図4、図6を用いて説明する。図4は給水ボックス33の開口部正面から見た通水エルボ39の取付完了状態の図、図6は前記通水エルボ39を継手15に取り付ける状態の斜視図である。図6に示すようにこの通水エルボ39は全体がL形の通水部材で、一端は円筒形で内周が平滑であり外周端部に鍔部42を有している。また他端はワンタッチ接続可能なソケット形状をなしている。まず前述の給水ボックス33に達している継手15に挿通のため取り付けられている挿通保護キャップ24と案内ガイド26を継手15から取り外す。この後、継手15の円筒状凸形状部に通水エルボ39の鍔部42を有する円筒部端を接続する。この円筒部内周面は継手15のシール部材17と圧接し、継手15と通水エルボ39は水密状態で接続される。継手15は外周に鍔部41を有し、継手15と通水エルボ39の接続状態では鍔部41と鍔部42が当接している。ここに金属製のファスナ43を取り付ける。このファスナ43は断面が内側に凹部形状をなす2つの腕部112を有しており、取り付け状態では、前記腕部112の凹部に鍔部41、42が嵌りこむ。こうすることにより使用時、内部に水圧がかかっても継手15と通水エルボ39が外れることはない。後述するがこうして取付が完了した後、給水ボックス33の室内側に開口を設けた壁板106を取り付ける。この状態が図4である。
【0017】
この通水管16の他端は通水器具の一つであるヘッダー9に接続される。この状態について図5を用いて説明する。図5は通水管16のヘッダー9への接続状態図である。まず通水管16端部の継手15に取り付けてある保護カバー18を継手15より取外した後、図5に示すようにヘッダー9の複数ある継手接続口102の一つに接続する。この継手接続口102は略円筒形で外周部に鍔部50を有し内周面は平滑になっている。このため継手15との接続時には継手15のシール部材17が前記内周面に圧接され、継手15とヘッダー9が水密状態に接続される。このとき外周部は継手15の鍔部41と、ヘッダー9の継手接続口102の鍔部50が当接状態になっており、前述の継手15と通水エルボ39の接続の場合と同様に金属製のファスナ43を取り付けることにより、通水時にもヘッダー9と継手15が外れることがない。
【0018】
上述のように各通水器具間を通水管16にて順次水密状態にて接続していく。挿通作業の中で通水管16が挿通できないときは、保護管8の建築骨組みへのサドル101による固定位置が不適切で曲り半径が小さすぎるためである。このときはそれまで挿通した通水管16の長さにより通水管16がどの位置で挿通できなくなっているか、即ち保護管8のどの部位のサドル101の固定位置が影響しているのかが判り、このサドル101の位置を修正した後、当該通水管16を再び挿通し、挿通作業を終える。
【0019】
全ての通水管16の保護管8への挿通および継手15の通水器具への接続が終了した後、床板や壁板の工事を行う。例として給水ボックス33を水栓に接続する場合を図7を使用して説明する。図7は給水ボックス33に取付した通水エルボ39に水栓113を接続する場合の概要図である。図7において給水ボックス33の前面に取り付けた壁板106の室内側より、カバー114を取り付ける。洗面カウンター115に水栓113を上面より取り付けた後、水栓113の2本の給水給湯管119を各々カバー114の開口部より突出している通水エルボ39のソケット部に接続する。この給水給湯管119の端部117はプラグ形状をしており、前記ソケット部にワンタッチにて接続できるようになっている。なおここでは給水ボックス33の例を説明したが、通水器具設置部の壁や床には全て開口部を有している。これは前述の給水ボックス33のような開口部を有するボックス内部に収納される場合もあるが、そうではないヘッダー9等の場合には設置部の床や壁に点検口を有している。
【0020】
つぎに経年後、通水管16の取り替え作業について説明する。上述のように通水器具設置部はすべて開口部を有している。前述の通水エルボ39とヘッダー9間の通水管16を例にとって説明すると、まずヘッダー9の設置部床に設けられている点検口を開け、ヘッダー9と継手15とを固定しているファスナ43を取外す。つぎに給水ボックス33の開口部から通水エルボ39と継手15とを接続しているファスナ43を取外した後、給水ボックス33側より通水管16を引き出す。この引き出し作業の後、新しい通水管16を前述の新設時と同様に挿通保護キャップ24と案内ガイド26を継手15に接続し、給水ボックス33側から保護管8に挿入する。挿通し終えた後、挿通保護キャップ24と案内ガイド26を継手15より取り外し、ヘッダー9にファスナ43にて接続、他端は保護カバー18を継手15より取り外し、継手15を通水エルボ39にファスナ43にて固定する。このときの通水管16の保護管8への挿通性については上述の新設時に確認しているため、取り替えの際に挿通できないことが判るということが無く、問題なく取り替え作業が終了する。上述のように取り替え作業を各通水管16について順次行うことで通水管16の取り替え作業は完了する。なお、ここでは例として給水ボックス33の開口部より通水管16の引き抜きおよび挿通を行う場合について説明したが、通水器具設置部すなわち通水管16端部は全て壁または床の開口部に位置しているため、両端のどちらからでも引き抜きおよび挿入の作業は可能である。また継手15には通水管16の長さを表示した表示ラベル19が貼り付けてあるため、事前に取り替える通水管16の長さを確認することができ、予め必要な通水管16を準備して取り替え作業をすることで、作業効率が大幅に向上する。
【0021】
なお本発明の実施の形態1では、給水ボックス33に通水エルボ39を設置し、これを介して、水栓113を接続する例(図7)について説明したが、通水エルボ39は必ずしも必要ない。例えば図8のように、継手15をファスナ43にて直接水栓116に接続してもよく、この場合通水管16を保護管8に挿通後、給水ボックス33開口部から取り出して水栓116に接続することができる。こうすることにより前述の通水エルボ39を使用する場合と比べて接続箇所を一箇所減らすことができ、漏水の危険を小さくすることができる。
【0022】
また本発明の実施の形態1では案内ガイド26を取り付けて通水管16を押し込む例にて説明したが、この例に限定されるものではない。すなわち通水管16の保護管8への挿通は前述のように押し込む場合の他に、保護管8の他端よりワイヤーを挿通し、保護管8より出てきたワイヤーの端部を通水管16の端部に接続し、保護管他端よりワイヤーを引くことで挿通する方法がある。この方法にて挿通する場合は案内ガイドの形状が前述の場合と異なっている。図9はこの案内ガイド120を、通水管16端部の継手15に取り付けている状態の断面図である。図9において、継手15の端部には前述のように挿通保護キャップ24が取り付けられており、この挿通保護キャップ24の穴27を貫通する形で案内ガイド120の雄ネジ部29が継手15の雌ネジ部30にねじ込まれて固定されている。また案内ガイド120はワイヤー接続用の穴121を有している。保護管8への挿通の際は保護管8の一端よりワイヤー(図示せず)を挿通し他端より出てきたワイヤー端部を穴121に接続する。その後、前述のワイヤー挿入元よりワイヤーを引き、通水管16を挿通する。この際、前述のように案内ガイド120の雄ネジ部29を直接継手15の雌ネジ部30に接続しているため挿通保護キャップ24に力がかかることは無く、挿通保護キャップ24の強度は挿通時の保護管8との摩擦力のみを考慮すればよいので低コストで製作することができる。
【0023】
さらに本発明の実施の形態1では、継手15の鍔部41が継手と一体の場合にて説明をしたが、これに限定されるものではない。通常、鍔部41が継手15を一体の場合では、継手15の外径の最大部が鍔部41になる。このことついて説明する。継手15と通水部材との接続の際にファスナ43にて接続するがに、このときファスナ43にて挟み込むための鍔部41が必要である。ファスナ43は形状を対称形にすると使い勝手がよく、対称形にするためには継手15を接続する通水部材の鍔部(例えば図4、図6の鍔部42)と外径を同一寸法にしなくてはならない。このため鍔部41が最大になってしまう。通常であればこの状態で、保護管8への挿通は問題ないが、特に内径の小さな保護管8に挿通使用とする場合はこの鍔部41が保護管8の内面との間で大きな摩擦抵抗を発生し挿通が難しくなる。この場合は、鍔部41を継手15と別部材とする方法をとることができる。この例を図10、図11を用いて説明する。図10は鍔部を外し、挿通保護キャップ24と案内ガイド26を継手123に取り付けた状態の断面図。図11は継手123を保護管に挿通後、鍔部122を接続した状態の断面図である。図11において略円筒形の継手123の外周には雄ネジ部124を有しており、ここに外周部に凸形状を有する略円筒形の鍔部122の内周の雌ネジ部125をねじ込み固定している。この状態においてはファスナ43が挟み込む鍔部122を有するため通水部材との接続が可能である。この継手123を保護管8に挿通する際は、図10のように鍔部122が接続されていない継手123に、挿通保護キャップ24と案内ガイド26が接続されている。このときの最大外径は、図11の状態より小さくなっている。この状態にて挿通することにより内径の小さな保護管に対しても、挿通しやすくなる。
【0024】
以上のように本発明の実施の形態1では、通水管16両端に予め継手15を取り付けて施工現場に輸送しているため、従来のように施工現場で通水管の傷つきによる接続不良により、水栓が予め取り付けられた通水管を無駄にして建築現場で廃材を発生させてしまうということがない。さらに通水管の新設時に保護管への挿通性を確認しているため通水管の取り替え時に保護管への挿通ができず問題になることはない。
【0025】
つぎに本発明の実施の形態2として、壁や床板を施工後、通水管を保護管に挿通する例について図12、図13を使用して説明する。図12は住宅の骨組みに保護管を施工した状態を示す斜視図、図13は保護管施工後、壁板および床板を施工した状態の斜視図である。図12において住宅の基礎103の上に土台104および柱105等の骨組みが施工される。この骨組みに対し、保護管8が基礎103から2階の給水ボックス(図示せず)に柱105に沿って施工されている。その際、保護管8は柱105にサドル101を使用して固定されている。
【0026】
この後、壁板106および床板107を施工する。図13において、破線110は壁板106および床板107の裏側にある柱105および土台104の外形線、破線111は同じく壁板106および床板107の裏側にある保護管8の外形線である。壁板106および床板107は柱105および土台104に釘108にて固定される。この際、施工者は壁板106および床板107を柱105および土台104に押し付け、室内側より釘打ち作業を行う。このため釘打ち位置がずれることもあり、釘109のように保護管8に相対する位置に打ちつけた場合には釘109が保護管8を傷つけ、最悪は貫通することになる。
【0027】
つぎに、通水管16を保護管8に挿通する。図示はしないが本発明の実施の形態2においても全ての通水器具設置部には壁板106および床板107に開口部を有しており、その開口部より通水管16を挿通することができる。通水管16の挿通については本発明の実施の形態1の場合と同じである。この挿通作業を前記釘109が打ち込まれている保護管8に対して行うと、挿通保護キャップ24が保護管8中の釘109のところまで挿通されたときに釘109に当たりそれ以上挿通できない。このときの挿通長さは作業者が把握できるため、保護管8のどの部位に釘109が打たれているか判る。このためその釘109を抜き、正しい位置に打ち変えることができる。その後、通水管16を挿通することができる。
【0028】
本発明の実施の形態2では、壁106や床107を施工後、通水管16を保護管8に挿通するため、施工者が誤って釘を保護管に打った場合でも、そのときは通水管16は保護管8内にはなく、通水管16を傷つけて漏水させることはない。
【0029】
つぎに本発明の実施の形態3として予め通水管の一端に継手を、他端に通水器具を取付けている例を図14を用いて説明する。通水器具とは前述のように水を分岐するヘッダーや、配管の末端に位置する水栓器具、あるいは水栓器具に接続するための通水エルボ等で水を通水する器具全てである。図14は予め一端に継手を、他端に通水器具を取り付けた通水管16の外観図である。そして、通水器具の例として、エルボ、ヘッダーそして水栓が取り付けられたものである。図14(A)は各通水管66の一端には継手15が取り付けられており、他端には通水エルボ68が取り付けられている。また図14(B)は各通水管66の一端には継手15が取り付けられており、他端にはヘッダー69が取り付けられている。また図14(C)は各通水管66の一端には継手15が取り付けられており、他端には水栓器具70が取り付けられている。この状態で設備の整った工場にて生産され、漏水検査を行った後、施工現場に出荷される。
【0030】
施工現場では保護管8を建築骨組みに取り付けた後、通水管66を継手15側より保護管8に挿通する。また一端に複数の通水管66が接続されている水栓器具70やヘッダー69の場合には、接続されている全ての通水管66を保護管8に挿通する。この後、通水器具を設置場所に固定する。
【0031】
以上のようにすることにより、両端に継手を有する通水管を使用した場合と比べ継手と通水器具との接続部が無くなり、より漏水の危険の少ない通水経路を構成することができる。
【0032】
【発明の効果】
以上説明したように、配管施工方法において可撓性を有する通水管の両端に継手を予め接続し、施工現場において、保護管を敷設した後に前記通水管を前記保護管内に挿通し、そして前記通水管の両端に接続した継手を通水器具に接続するようにしたので、予め継手が接続された通水管を施工現場へ出荷する前に、接続部分の漏水確認を工場で行うことができる。(第三、第四課題)また施工された保護管に対し通水管を保護管に挿通しているため、挿通できることの確認を行うことができる。(第二課題)このため、施工現場で通水管と継手の接続とそれに伴う漏水検査という手間のかかる作業をする必要が無く、無駄な通水管という廃材を発生させない、低コストな給水配管を実現できる。また通水管の取り替え作業を短工期で行うことができ、取り替え時に発生する費用を低減することができる。
【0033】
また、配管施工方法において可撓性を有する通水管の両端に継手を予め接続し、施工現場において、保護管を敷設した後に壁板または床板などの建築部材を施工し、次に前記通水管を前記保護管内に挿通し、そして前記通水管の両端に接続した継手を通水器具に接続するようにしたので、予め継手が接続された通水管を施工現場へ出荷する前に、接続部分の漏水確認を工場で行うことができる。(第三、第四課題)また施工された保護管に対し通水管を保護管に挿通しているため、挿通できることの確認を行うことができる。(第二課題)また壁板または床板などの建築部材の施工の際に誤って保護管敷設位置に釘を打った場合でも、この時点では保護管しか敷設しておらず通水管へは釘打ちされない。(第一課題)このため釘打ちによる漏水をなくすことができ、漏水の心配の無い給水配管を実現できる。また、再述するが、施工現場で通水管と継手の接続とそれに伴う漏水検査という手間のかかる作業をする必要が無く、無駄な通水管という廃材を発生させない、低コストな給水配管を実現できる。また、スムーズな通水管の取り替え作業を、短工期で行うことができ、取り替え時に発生する費用を低減することができる。
【0034】
さらに、配管施工方法において前記通水管の一端は、通水器具が予め接続されているようにしたので、施工現場では通水管の一端において通水器具と継手との接続作業が不要になる。このため、施工現場での接続箇所が削減できることで施工者による接続ミスによって発生する漏水の可能性を低くすることができる。
【図面の簡単な説明】
【図1】本発明の実施の形態1における配管施工状態の概念図
【図2】本発明の実施の形態1における通水管の一部断面外観図
【図3】本発明の実施の形態1における保護管への通水管挿通作業状態の断面図
【図4】本発明の実施の形態1における通水エルボ取付完了状態図
【図5】本発明の実施の形態1における通水管のヘッダーへの接続状態図
【図6】本発明の実施の形態1における通水エルボ取付状態斜視図
【図7】本発明の実施の形態1における通水エルボに水栓を接続する場合の概要図
【図8】本発明の実施の形態1における通水管継手を水栓に直接接続する場合の概要図
【図9】本発明の実施の形態1における保護管への通水管挿通時の通水管端部の断面図
【図10】本発明の実施の形態1における保護管への通水管挿通時の通水管端部の断面図
【図11】本発明の実施の形態1における継手に鍔部材を接続した状態の断面図
【図12】本発明の実施の形態2における住宅の骨組みへの保護管施工状態図
【図13】本発明の実施の形態2における壁板および床板を施工した状態の斜視図
【図14】本発明の実施の形態3における通水管の外観図
【図15】従来の保護管付管の外観図
【図16】従来の保護管付管の施工状態斜視図
【符号の説明】
1 通水管
2 保護管
3 継手
6 ヘッダー側継手
7 末端側継手
8 保護管
9 ヘッダー
10 末端器具
13 水道メーター
14 減圧弁ユニット
15 継手
16 通水管
17 シール部材
18 保護カバー
19 表示ラベル
24 挿通保護キャップ
25 半球部
26 案内ガイド
27 穴
28 先端部
29 雄ネジ部
30 雌ネジ部
31 消音テープ
33 給水ボックス
39 通水エルボ
41 鍔部
42 鍔部
43 ファスナ
50 鍔部
66 通水管
68 通水エルボ
69 ヘッダー
70 水栓器具
100 給湯機
101 サドル
102 継手接続口
103 基礎
104 土台
105 柱
106 壁板
107 床板
108 釘
109 釘
110 破線
111 破線
112 腕部
113 水栓
114 カバー
115 洗面カウンター
117 端部
116 水栓
118 ヘッダー
119 給水給湯管
120 案内ガイド
121 穴
122 鍔部
123 継手
124 雄ネジ部
125 雌ネジ部
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a piping method for a water pipe used in a building such as a house.
[0002]
[Prior art]
An example of a water pipe used in a building such as a conventional house will be described below. FIG. 15 is an external view of a conventional pipe with a protective tube, and FIG. 16 is a perspective view of a state of construction of the conventional pipe with a protective pipe. For example, as shown in FIG. 15, a protective pipe 2 made of a synthetic resin is externally fitted to a water pipe 1 having a predetermined length in advance at a factory or the like, and joints 3 are connected to both ends of the water pipe 1 in advance. There is a pipe with a protective tube configured so that the water pipe 1 is not removed from the inside of the protective pipe 2 by the joint 3. This aims at eliminating the complicated work of connecting the water pipe 1 and the joint 3 from the construction site. At the construction site, the joint 3 connected to both ends of the water pipe 1 as shown in FIG. It is designed to be connected to a water flow device such as the side joint 6 or the terminal side joint 7.
(See Patent Document 1)
Although not shown, another example is proposed in which a water faucet is attached to one end of a water pipe in advance, and nothing is connected to the other end. This is to eliminate the connection work between the water pipe and the faucet from the site. After the protection pipe is previously piped at the construction site, the water pipe is inserted into the protection pipe from the end where nothing is connected. Since this water pipe is longer than necessary, fix the faucet connected to the other end at the installation position, cut the water pipe end to the required length up to the header, and connect to the header Is taking the method.
(See Patent Document 2)
[0003]
[Patent Document 1]
JP-A-4-92191 (FIGS. 1-3, 1, 2)
[Patent Document 2]
JP-A-2000-34752 (page 3-4, FIG. 2)
[0004]
[Problems to be solved by the invention]
However, the above configuration has the following problems.
(First issue)
When the pipe disclosed in Japanese Patent Application Laid-Open No. 4-92191 is used, first, a water pipe previously inserted into a protective pipe is installed at a construction site. In this method, after assembling a building framework such as a pillar, a pipe is fixed to the framework along the framework using a saddle or the like. Next, the floor or the wall is fixed to a frame such as a pillar by hitting with a nail or the like. In this case, nailing is performed with the floor plate and wall plate pressed against the frame, but at this time, since the worker works from the indoor side, the exact position of the frame can not be seen visually, Work. At this time, there is a risk that a nail may be accidentally hit into the water pipe and a hole may be made in the pipe. In this case, it is not known that the pipe has a hole until the main tap of the water supply is opened after the completion of the house and the water use equipment is used. In addition, because the pipe is in a hidden part behind the wall or under the floor, it is not possible to identify the leaked part of the pipe as it is, that is, the part where the pipe is nailed, and if it is necessary to replace the leaked part, the house is completed After that, a large-scale construction of peeling off a wall plate or a floor plate is required, and a great cost is generated.
[0005]
(Second assignment)
In addition, when the pipe disclosed in Japanese Patent Application Laid-Open No. 4-92191 is used, a problem occurs when the pipe is replaced. As described above, at the time of new installation of the pipe, the water pipe 1 previously inserted into the protective pipe 2 is fixed along the architectural framework, and the wall floor is constructed. Connect to a water flow device such as header 118. The life of the water pipe 1 is shorter than that of the building frame, and it is necessary to replace the water pipe 1 after a long time. At this time, after cutting one of the joints 3 at the end of the water pipe 1 and pulling out only the water pipe 1 from the protection pipe 2 from the other, a new water pipe 1 is inserted into the protection pipe 2 and the joint 3 is inserted into the end. Connect. After that, the joint 3 and the water flowing device are connected. However, in this method, when the water pipe 1 is inserted into the protective pipe 2, a force against the frictional resistance generated between the two must be applied. In this construction method, since the protection pipe 2 is fixed together with the water pipe 1 without checking the frictional resistance at the time of insertion when the pipe is newly installed, when the protection pipe 2 has a large bend or a small bending radius, it needs to be replaced. However, there is a problem that it is necessary to move the fixing position of the protective tube 2 by peeling off the wall floor or the like, which results in a large cost.
[0006]
(Third task)
Furthermore, in Japanese Patent Application Laid-Open No. 2000-34752, since a water-flow device is connected to only one end of the water-flow pipe 1 and nothing is connected to the other end, other water-flow pipes 1 and other headers such as a header 118 are installed at the construction site. You will need to connect a water supply device. In the connection work of the water pipe 1 at the construction site, there is a risk of water leakage due to construction mistake or damage to the end of the water pipe 1, and after the connection work to check the water tightness of the connection part, perform a pressure resistance test There is a need. The procedure of the pressure test at this construction site will be described below. First, after closing both ends of the water pipe 1 to seal the inside of the water pipe 1, water is sent from the pressure resistance tester to the water pipe to apply pressure, and water leaks from the connection within a certain time (usually about one hour). Make sure there are no This is a very labor-intensive task.
[0007]
(Fourth assignment)
Further, in Japanese Patent Application Laid-Open No. 2000-34752, processing when water leakage is found by a pressure test is difficult. The connection structure between the water pipe 1 and the water supply device may or may not be removable from the water pipe 1, but in the former case, when the connection is re-established, the water pipe 1 needs to be cut off in the middle, and the latter. Then, after removal, the damaged end must be cut. In any case, the length of the pipe, which was adjusted initially and made the best length, was shortened, and the length of the water pipe 1 was insufficient, so that it could not be used, and a new water pipe 1 with a faucet connected to one end was newly arranged. I have to do it. This is not only costly, but also after the arrangement, the construction period is extended until the water pipe 1 to which the faucet is connected is obtained. There is a problem that this occurs in
Therefore, in the present invention, in order to solve the above problems, it is possible to reduce the work of connecting the water supply and hot water supply pipes at the construction site, to minimize the damage due to water leakage, and to replace the water pipes, wall boards and floor boards. It is intended to provide a piping method for supplying water and hot water in a house which can be replaced without removing it.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, in claim 1 of the present invention, a joint is previously connected to both ends of a flexible water pipe in a piping construction method, and after the protection pipe is laid, the water pipe is inserted into the protection pipe. The fittings connected to both ends of the water pipe were connected to a water flow device.
[0009]
Thereby, before shipping the water pipe to which the joint has been connected in advance to the construction site, it is possible to check for water leakage at the connection portion at the factory. Further, since the water pipe is inserted into the installed protective tube, it can be confirmed that the water can be inserted.
[0010]
According to a second aspect of the present invention, in a piping construction method, joints are connected in advance to both ends of a flexible water pipe, a protection pipe is laid, and a building member such as a wall plate or a floor plate is constructed. A water pipe was inserted into the protection pipe, and a joint connected to both ends of the water pipe was connected to a water passage device.
[0011]
Thereby, before shipping the water pipe to which the joint has been connected in advance to the construction site, it is possible to check for water leakage at the connection portion at the factory. Further, since the water pipe is inserted into the installed protective tube, it can be confirmed that the water can be inserted. Also, even if a nail is mistakenly hit at the protection pipe laying position at the time of construction of a building member such as a wall board or a floor board, only the protection pipe is laid at this time and the water pipe is not nailed.
[0012]
According to a third aspect of the present invention, in the piping construction method, one end of the water pipe is connected to a water flow device in advance.
[0013]
This eliminates the need for a connection work between the water flow device and the joint at one end of the water flow pipe at the construction site.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 of the present invention will be described with reference to the following drawings.
FIG. 2 is a partial cross-sectional external view of the water pipe 16 according to Embodiment 1 of the present invention. The water pipe 16 will be described below in accordance with the manufacturing procedure. First, one end of a joint 15 is caulked to both ends of a water pipe 16 formed of cross-linked polyethylene. The other end of the joint 15 has a substantially cylindrical convex shape, an inner peripheral portion forms a space for water passage, and two O-rings serving as seal members 17 are arranged on the outer peripheral portion. As will be described later, at the time of connection with the water flow device, the seal member 17 is pressed against the inner periphery of the cylindrical portion of the connection portion of the water flow device to seal in a watertight state. In this state, the water pipe 16 and the joint 15 are connected to each other in a watertight manner, and a water leak test is performed by applying a water pressure from the joints at both ends. After confirming that there is no water leakage in the above inspection, a protective cover 18 for preventing the seal member 17 from being damaged is attached. The water pipes 16 can be manufactured collectively for each predetermined length. In this example, it is manufactured every 1 m, 2 m and 1 m. By doing so, the manufacturing cost per unit can be reduced. Further, in order to store the water pipes 16 having a plurality of lengths, a display label 19 indicating the length of the water pipe 16 is attached to the joints 15 at both ends. In this way, it can be easily identified at the time of storage in a warehouse. There are various methods for describing the length, such as numbers (1 m, 2 m, etc.), symbols (記号, ×, Δ, etc.), colors, etc., and they can be used properly depending on the situation.
[0015]
A procedure for constructing the water pipe 16 manufactured as described above at the construction site will be described. FIG. 1 is a conceptual diagram of a completed state of the piping work according to the first embodiment of the present invention. In FIG. 1, a water supply main pipe branched from a water supply water supply main pipe is connected via a water meter 13 to a pressure reducing valve unit 14 for reducing the water pressure to a constant pressure. Here, it is branched into two pipes, one of which is connected to the hot water header 9 via the water heater 100 and the other is directly connected to the hot water header 9. In addition, the pipe is connected to the end device 10 such as a faucet at each water use place from the header 9 directly or through an intermediate member such as a water passage elbow 39 on the way by piping. The water meter 13, the pressure reducing valve unit 14, the header 9, the water passage elbow 39, and the terminal device 10 are all water passage devices through which water or hot water passes. The water pipe 16 shown in FIG. 2 is connected as a connection pipe between the water flowing devices. As a construction procedure, first, the protection pipe 8 is fixed to the building frame using the saddle 101, and then the water pipe 16 is inserted into the protection pipe 8. This procedure will be described with reference to FIG. FIG. 3 is a cross-sectional view when the water pipe 16 is inserted into the end of the protection pipe 8. In FIG. 3, one end of a joint 15 is connected to an end of a water pipe 16 and an insertion protection cap 24 having a hemispherical portion 25 having a hole 27 at one end is connected to the cylindrical convex portion at the other end. Have been. The inner peripheral portion of the cylindrical convex shape has a female screw portion 30, and a guide guide 26 is connected through the hole 27 with a male screw portion 29 at the end screwed into the female screw portion 30. This insertion protection cap 24 is different from the protection cover 18 of FIG. This is for the purpose of preventing the seal member 17 from being damaged when the water pipe 16 is stored or transported, while the protection cover 24 is used to seal the water pipe when the water pipe is inserted into the protection pipe 8. The purpose is to protect the member 17 and is replaced at the construction site. Since the end of the insertion protection cap 24 has a hemispherical shape as described above, the insertion resistance due to friction with the protection tube 8 when the protection cap 24 is inserted is reduced. The guide 26 has a flexible rod-like shape and a spindle-shaped tip 28. Therefore, when the guide guide 26 is bent along the protection tube 8 when the protection tube 8 is inserted, the joint 15, that is, the water pipe 16 is easily inserted. Further, as described above, since the male screw portion 29 at the end of the guide guide 26 is directly connected to the female screw portion 30 of the joint 15, even if a force is applied to the guide guide 26 at the time of insertion, a force is applied to the insertion protection cap 24. It does not take. For this reason, it is not necessary to firmly fix the insertion protection cap 24 to the joint 15 with a screw or the like, and it is only necessary to cover the cylindrical convex portion of the joint 15. This makes the work very simple. Further, when inserting, the sound absorbing tape 31 is pushed in while being wound around the water pipe 16. The sound deadening tape 31 has a function of reducing noise caused by a water hammer action generated by a water faucet fitting or the like located at the end when the water stops suddenly. When the water pipe 16 is inserted in this way, the joint 15 at the tip of the water pipe 16 reaches the water supply box 33 connected to the other end of the protection pipe 8. The water supply box 33 is fixed in a state where the water supply box 33 has an opening inside the wall.
[0016]
After the insertion operation is completed, a water supply elbow 39, which is one of the water supply members, is attached to the water supply box 33. This will be described with reference to FIGS. FIG. 4 is a view showing a state in which the water supply elbow 39 is completely mounted as viewed from the front of the opening of the water supply box 33, and FIG. 6 is a perspective view showing a state in which the water flow elbow 39 is mounted on the joint 15. As shown in FIG. 6, the water passage elbow 39 is an L-shaped water passage member as a whole. One end is cylindrical, the inner periphery is smooth, and a flange 42 is provided at the outer end. The other end has a socket shape capable of one-touch connection. First, the insertion protection cap 24 and the guide 26 attached to the joint 15 reaching the water supply box 33 for insertion are removed from the joint 15. Thereafter, the end of the cylindrical portion having the flange 42 of the water-flow elbow 39 is connected to the cylindrical convex portion of the joint 15. The inner peripheral surface of the cylindrical portion comes into pressure contact with the seal member 17 of the joint 15, and the joint 15 and the water-flow elbow 39 are connected in a watertight state. The joint 15 has a flange 41 on the outer periphery, and the flange 41 and the flange 42 are in contact with each other when the joint 15 is connected to the water-flowing elbow 39. Here, a metal fastener 43 is attached. The fastener 43 has two arms 112 each having a concave cross section on the inside, and the flanges 41 and 42 fit into the recesses of the arm 112 when mounted. Thus, during use, the joint 15 and the water-flow elbow 39 do not come off even if water pressure is applied inside. As will be described later, after the mounting is completed, the wall plate 106 having an opening provided on the indoor side of the water supply box 33 is mounted. This state is shown in FIG.
[0017]
The other end of the water pipe 16 is connected to the header 9 which is one of the water flowing devices. This state will be described with reference to FIG. FIG. 5 is a diagram showing a connection state of the water pipe 16 to the header 9. First, after removing the protective cover 18 attached to the joint 15 at the end of the water pipe 16 from the joint 15, it is connected to one of the plurality of joint connection ports 102 of the header 9 as shown in FIG. 5. The joint connection port 102 has a substantially cylindrical shape, and has a flange portion 50 on an outer peripheral portion, and an inner peripheral surface is smooth. Therefore, at the time of connection with the joint 15, the seal member 17 of the joint 15 is pressed against the inner peripheral surface, and the joint 15 and the header 9 are connected in a watertight state. At this time, the outer peripheral portion is in contact with the flange portion 41 of the joint 15 and the flange portion 50 of the joint connection port 102 of the header 9. By attaching the fastener 43 made of stainless steel, the header 9 and the joint 15 do not come off even when water is supplied.
[0018]
As described above, the water pipes are sequentially connected in a watertight state by the water pipe 16 between the water pipes. If the water pipe 16 cannot be inserted during the insertion work, the fixing position of the protective tube 8 to the building frame by the saddle 101 is inappropriate and the bending radius is too small. At this time, it is possible to determine at which position the water pipe 16 cannot be inserted due to the length of the water pipe 16 inserted up to that time, that is, which part of the protection tube 8 has an influence on the fixing position of the saddle 101, and After correcting the position of the saddle 101, the water pipe 16 is inserted again, and the insertion operation is completed.
[0019]
After all the water pipes 16 have been inserted into the protection pipes 8 and the connection of the joints 15 to the water pipes has been completed, floor and wall boards are constructed. As an example, a case where the water supply box 33 is connected to a faucet will be described with reference to FIG. FIG. 7 is a schematic diagram in the case where the faucet 113 is connected to the water passage elbow 39 attached to the water supply box 33. In FIG. 7, a cover 114 is attached from the indoor side of the wall plate 106 attached to the front surface of the water supply box 33. After the faucet 113 is attached to the wash counter 115 from above, the two hot water supply pipes 119 of the faucet 113 are connected to the sockets of the water flow elbows 39 projecting from the openings of the cover 114, respectively. The end 117 of the hot water supply pipe 119 has a plug shape so that it can be connected to the socket with one touch. Here, the example of the water supply box 33 has been described, but all the walls and floors of the water supply device installation portion have openings. This may be housed inside a box having an opening such as the water supply box 33 described above, but in the case of a header 9 or the like which is not so, the installation section has an inspection port on the floor or wall.
[0020]
Next, the operation of replacing the water pipe 16 after a lapse of time will be described. As described above, all of the water passing device installation sections have openings. Taking the water pipe 16 between the water-flow elbow 39 and the header 9 as an example, first, an inspection port provided on the floor where the header 9 is installed is opened, and a fastener 43 for fixing the header 9 and the joint 15 is provided. Remove. Next, after removing the fastener 43 connecting the water flow elbow 39 and the joint 15 from the opening of the water supply box 33, the water flow pipe 16 is pulled out from the water supply box 33 side. After this drawing operation, a new water pipe 16 is connected to the joint 15 with the insertion protection cap 24 and the guide 26 in the same manner as in the case of the new installation described above, and inserted into the protection pipe 8 from the water supply box 33 side. After the insertion is completed, the insertion protection cap 24 and the guide 26 are removed from the joint 15 and connected to the header 9 with a fastener 43. The other end is removed from the protection cover 18 from the joint 15, and the fitting 15 is inserted into the water elbow 39 with a fastener. Fix at 43. Since the penetration of the water pipe 16 into the protection pipe 8 at this time was confirmed at the time of the above-mentioned new installation, it is not known that the water pipe 16 cannot be inserted at the time of replacement, and the replacement operation ends without any problem. As described above, the replacement work of the water pipes 16 is completed by sequentially performing the replacement work for each water pipe 16. Here, as an example, the case where the water pipe 16 is pulled out and inserted from the opening of the water supply box 33 has been described, but the installation part of the water flowing apparatus, that is, the end of the water pipe 16 is all located at the opening of the wall or floor. Therefore, the operation of pulling out and inserting from both ends is possible. In addition, since the display label 19 indicating the length of the water pipe 16 is attached to the joint 15, the length of the water pipe 16 to be replaced can be confirmed in advance, and the necessary water pipe 16 is prepared in advance. By performing the replacement work, the work efficiency is greatly improved.
[0021]
In the first embodiment of the present invention, an example in which the water supply elbow 39 is installed in the water supply box 33 and the faucet 113 is connected via the water supply elbow 39 (FIG. 7) has been described. However, the water supply elbow 39 is not necessarily required. Absent. For example, as shown in FIG. 8, the joint 15 may be directly connected to the faucet 116 with the fastener 43. In this case, after the water pipe 16 is inserted into the protective pipe 8, the water pipe 16 is taken out from the opening of the water supply box 33, and is connected to the faucet 116. Can be connected. By doing so, the number of connection points can be reduced by one compared with the case where the water-flow elbow 39 is used, and the danger of water leakage can be reduced.
[0022]
In the first embodiment of the present invention, an example has been described in which the guide 26 is attached and the water pipe 16 is pushed in. However, the present invention is not limited to this example. That is, the water pipe 16 is inserted into the protection pipe 8 in addition to the case where the water pipe 16 is pushed as described above, and a wire is inserted from the other end of the protection pipe 8 and the end of the wire coming out of the protection pipe 8 is passed through the water pipe 16. There is a method of connecting to the end portion and inserting the wire by pulling a wire from the other end of the protection tube. When the guide is inserted by this method, the shape of the guide is different from the above-mentioned case. FIG. 9 is a sectional view showing a state in which the guide 120 is attached to the joint 15 at the end of the water pipe 16. In FIG. 9, the insertion protection cap 24 is attached to the end of the joint 15 as described above, and the male screw portion 29 of the guide guide 120 is inserted into the hole 27 of the insertion protection cap 24 to It is screwed into the female screw part 30 and fixed. The guide 120 has a hole 121 for wire connection. At the time of insertion into the protective tube 8, a wire (not shown) is inserted from one end of the protective tube 8, and a wire end protruding from the other end is connected to the hole 121. Then, the wire is pulled from the wire insertion source described above, and the water pipe 16 is inserted. At this time, since the male screw portion 29 of the guide guide 120 is directly connected to the female screw portion 30 of the joint 15 as described above, no force is applied to the insertion protection cap 24, and the strength of the insertion protection cap 24 is reduced. Since only the frictional force with the protective tube 8 at the time needs to be taken into account, it can be manufactured at low cost.
[0023]
Furthermore, in the first embodiment of the present invention, the case where the flange 41 of the joint 15 is integral with the joint has been described, but the present invention is not limited to this. Normally, when the flange 41 is integrated with the joint 15, the maximum outer diameter of the joint 15 is the flange 41. This will be described. The connection between the joint 15 and the water-passing member is made by the fastener 43, but at this time, the flange 41 is required to be sandwiched by the fastener 43. When the fastener 43 is formed in a symmetrical shape, it is easy to use. In order to make the fastener 43 symmetrical, the outer diameter of the flange (for example, the flange 42 in FIGS. 4 and 6) for connecting the joint 15 is made the same. Must-have. For this reason, the flange 41 is maximized. Normally, in this state, there is no problem in insertion into the protection tube 8. However, when the protection tube 8 having a small inner diameter is used, the flange portion 41 has a large frictional resistance with the inner surface of the protection tube 8. Occurs and insertion becomes difficult. In this case, a method can be adopted in which the flange 41 is formed as a separate member from the joint 15. This example will be described with reference to FIGS. FIG. 10 is a cross-sectional view showing a state in which the flange portion has been removed and the insertion protection cap 24 and the guide 26 have been attached to the joint 123. FIG. 11 is a cross-sectional view showing a state where the flange 123 is connected after the joint 123 is inserted through the protective tube. In FIG. 11, a substantially cylindrical joint 123 has an externally threaded portion 124 on the outer periphery thereof, and a female screw portion 125 on the inner periphery of a substantially cylindrically shaped flange portion 122 having a convex shape on the outer periphery is screwed in here. are doing. In this state, the connection with the water-permeable member is possible because of the presence of the flange portion 122 between which the fastener 43 is sandwiched. When inserting the joint 123 into the protective tube 8, the insertion protection cap 24 and the guide 26 are connected to the joint 123 to which the flange 122 is not connected as shown in FIG. The maximum outer diameter at this time is smaller than the state shown in FIG. By inserting in this state, it becomes easy to insert even into a protective tube having a small inner diameter.
[0024]
As described above, in the first embodiment of the present invention, the joint 15 is attached to both ends of the water pipe 16 in advance and transported to the construction site. There is no waste of water at the construction site by wasting water pipes with pre-attached plugs. Furthermore, since the penetration of the protection pipe was confirmed when the water pipe was newly installed, there is no problem since the water pipe cannot be inserted into the protection pipe when the water pipe is replaced.
[0025]
Next, as Embodiment 2 of the present invention, an example in which a water pipe is inserted into a protective pipe after construction of a wall or a floor plate will be described with reference to FIGS. FIG. 12 is a perspective view showing a state in which a protective tube is constructed on a frame of a house, and FIG. 13 is a perspective view showing a state in which a wall plate and a floor plate are constructed after the protective tube is constructed. In FIG. 12, a framework such as a base 104 and a pillar 105 is constructed on a foundation 103 of a house. For this framework, a protective tube 8 is installed along a pillar 105 from a foundation 103 to a water supply box (not shown) on the second floor. At this time, the protection tube 8 is fixed to the pillar 105 using the saddle 101.
[0026]
Thereafter, the wall plate 106 and the floor plate 107 are constructed. In FIG. 13, a dashed line 110 is an outline of the pillar 105 and the base 104 behind the wall plate 106 and the floor plate 107, and a dashed line 111 is an outline of the protection tube 8 also behind the wall plate 106 and the floor plate 107. The wall plate 106 and the floor plate 107 are fixed to the pillar 105 and the base 104 with nails 108. At this time, the builder presses the wall plate 106 and the floor plate 107 against the pillar 105 and the base 104, and performs a nailing operation from the indoor side. For this reason, the nailing position may be shifted. When the nail is hit at a position opposite to the protection tube 8 like the nail 109, the nail 109 damages the protection tube 8 and, at worst, penetrates.
[0027]
Next, the water pipe 16 is inserted into the protection pipe 8. Although not shown, also in the second embodiment of the present invention, all the water-passing device installation portions have openings in the wall plate 106 and the floor plate 107, and the water passage pipe 16 can be inserted through the openings. . The insertion of the water pipe 16 is the same as in the first embodiment of the present invention. When this insertion operation is performed on the protection tube 8 into which the nail 109 is driven, when the insertion protection cap 24 is inserted to the nail 109 in the protection tube 8, the insertion protection cap 24 hits the nail 109 and cannot be further inserted. Since the insertion length at this time can be grasped by the operator, it is possible to know which part of the protective tube 8 is nailed. For this reason, the nail 109 can be pulled out and can be driven to the correct position. Thereafter, the water pipe 16 can be inserted.
[0028]
In the second embodiment of the present invention, after the wall 106 and the floor 107 are constructed, the water pipe 16 is inserted into the protection pipe 8. 16 is not in the protective tube 8 and does not damage the water pipe 16 to leak water.
[0029]
Next, as Embodiment 3 of the present invention, an example in which a joint is attached to one end of a water pipe and a water fitting is attached to the other end in advance will be described with reference to FIG. As described above, the water passing device is a header that branches water, a water faucet device located at the end of the pipe, or a water flowing elbow for connecting to the water faucet device. FIG. 14 is an external view of a water pipe 16 in which a joint is previously attached to one end and a water passage device is attached to the other end. An elbow, a header, and a faucet are attached as examples of the water flow device. In FIG. 14A, a joint 15 is attached to one end of each water pipe 66, and a water elbow 68 is attached to the other end. In FIG. 14B, a joint 15 is attached to one end of each water pipe 66, and a header 69 is attached to the other end. In FIG. 14C, a joint 15 is attached to one end of each water pipe 66, and a faucet device 70 is attached to the other end. In this state, it is produced in a fully equipped factory, subjected to water leakage inspection, and then shipped to the construction site.
[0030]
At the construction site, after attaching the protection pipe 8 to the building frame, the water pipe 66 is inserted into the protection pipe 8 from the joint 15 side. In the case of the faucet device 70 or the header 69 in which a plurality of water pipes 66 are connected to one end, all the connected water pipes 66 are inserted into the protection pipe 8. After that, the water flow device is fixed to the installation location.
[0031]
By doing as described above, there is no connection between the joint and the water passage device as compared with the case where a water pipe having joints at both ends is used, and a water passage with less risk of water leakage can be configured.
[0032]
【The invention's effect】
As described above, in the piping construction method, joints are previously connected to both ends of the flexible water pipe, and at the construction site, after the protection pipe is laid, the water pipe is inserted into the protection pipe, and Since the joints connected to the both ends of the water pipe are connected to the water-supplying equipment, it is possible to check for water leakage at the connection portion at the factory before shipping the water pipe connected to the joint in advance to the construction site. (Third and fourth problems) In addition, since the water pipe is inserted into the installed protection pipe, it can be confirmed that the water pipe can be inserted. (Second problem) For this reason, there is no need to perform the laborious work of connecting the water pipes and fittings and the accompanying water leakage inspection at the construction site, and realize a low-cost water supply pipe that does not generate waste materials such as wasted water pipes. it can. In addition, the replacement work of the water pipe can be performed in a short period of time, and the cost of replacement can be reduced.
[0033]
In addition, in the piping construction method, a joint is connected in advance to both ends of a flexible water pipe, and at a construction site, a construction member such as a wall plate or a floor plate is constructed after laying a protective tube, and then the water pipe is constructed. Since the fittings connected to both ends of the water pipe and the water pipe are connected to the water fittings, before the water pipe with the joint connected thereto is shipped to the construction site, water leakage at the connection part is required. Confirmation can be made at the factory. (Third and fourth problems) In addition, since the water pipe is inserted into the installed protection pipe, it can be confirmed that the water pipe can be inserted. (Second problem) In addition, even if a nail is accidentally driven into the protection pipe laying position when building members such as wall boards or floor boards are constructed, only the protection pipe is laid at this point and the water pipe is nailed. Not done. (First problem) Therefore, water leakage due to nailing can be eliminated, and a water supply pipe free from water leakage can be realized. In addition, as described again, there is no need to perform a troublesome work of connecting a water pipe and a joint at the construction site and inspecting a leak therewith, and it is possible to realize a low-cost water supply pipe that does not generate wasted water pipes. . Moreover, the smooth replacement work of the water pipe can be performed in a short construction period, and the cost of replacement can be reduced.
[0034]
Further, in the piping construction method, one end of the water pipe is connected to a water-flow device in advance, so that at the construction site, the work of connecting the water-flow device and the joint at one end of the water pipe becomes unnecessary. For this reason, since the number of connection points at the construction site can be reduced, the possibility of water leakage caused by a connection error by the installer can be reduced.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram of a piping construction state in Embodiment 1 of the present invention.
FIG. 2 is a partial cross-sectional external view of a water pipe according to Embodiment 1 of the present invention.
FIG. 3 is a cross-sectional view showing a state in which a water pipe is inserted into a protective tube according to the first embodiment of the present invention.
FIG. 4 is a diagram showing a completed state of a water-flow elbow according to the first embodiment of the present invention.
FIG. 5 is a connection state diagram of the water pipe to the header according to the first embodiment of the present invention.
FIG. 6 is a perspective view of a water-flow elbow according to the first embodiment of the present invention;
FIG. 7 is a schematic diagram showing a case where a faucet is connected to the water passage elbow according to the first embodiment of the present invention.
FIG. 8 is a schematic diagram in a case where the water pipe coupling according to the first embodiment of the present invention is directly connected to a faucet.
FIG. 9 is a cross-sectional view of the end of the water pipe when the water pipe is inserted into the protection pipe according to the first embodiment of the present invention.
FIG. 10 is a sectional view of the end of the water pipe when the water pipe is inserted into the protection pipe according to the first embodiment of the present invention.
FIG. 11 is a sectional view showing a state where a flange member is connected to the joint according to the first embodiment of the present invention;
FIG. 12 is a view showing a state in which a protective tube is installed on a frame of a house according to the second embodiment of the present invention.
FIG. 13 is a perspective view of a state in which a wall plate and a floor plate according to Embodiment 2 of the present invention are constructed.
FIG. 14 is an external view of a water pipe according to Embodiment 3 of the present invention.
FIG. 15 is an external view of a conventional tube with a protective tube.
FIG. 16 is a perspective view showing a state of construction of a conventional pipe with a protective tube.
[Explanation of symbols]
1 water pipe
2 Protection tube
3 Fitting
6 Header side fitting
7 Terminal side joint
8 Protection tube
9 Header
10 Terminal equipment
13 water meter
14 Pressure reducing valve unit
15 Fitting
16 Water pipe
17 Sealing member
18 Protective cover
19 Label
24 Insertion Protection Cap
25 Hemisphere
26 Information Guide
27 holes
28 Tip
29 Male thread
30 Female thread
31 sound deadening tape
33 Water supply box
39 Water elbow
41 Tsuba
42 collar
43 Fastener
50 Tsubabe
66 water pipe
68 Water elbow
69 header
70 faucet equipment
100 water heater
101 saddle
102 Joint connection port
103 Basics
104 Foundation
105 pillar
106 wallboard
107 floorboard
108 nails
109 Nail
110 Dashed line
111 broken line
112 arms
113 faucet
114 cover
115 Wash counter
117 end
116 faucet
118 header
119 Hot water supply pipe
120 Information Guide
121 holes
122 collar
123 Fitting
124 Male thread
125 female thread

Claims (3)

可撓性を有する通水管の両端に継手を予め接続し、保護管を敷設した後に前記通水管を前記保護管内に挿通し、前記通水管の両端に接続した継手を通水器具に接続することを特徴とする配管施工方法。A joint is connected in advance to both ends of a flexible water pipe, and after laying a protective pipe, the water pipe is inserted into the protective pipe, and a joint connected to both ends of the water pipe is connected to a water flow device. A piping construction method characterized by the following. 可撓性を有する通水管の両端に継手を予め接続し、保護管を敷設した後に壁板または床板などの建築部材を施工し、次に前記通水管を前記保護管内に挿通し、前記通水管の両端に接続した継手を通水器具に接続することを特徴とする配管施工方法。A joint is connected in advance to both ends of a flexible water pipe, a protection pipe is laid, a building member such as a wall plate or a floor plate is constructed, and then the water pipe is inserted into the protection pipe, and the water pipe is A piping construction method, characterized in that a joint connected to both ends of the pipe is connected to a water appliance. 前記通水管の一端には継手に替えて通水器具が予め接続されていることを特徴とする請求項1から請求項2に記載の配管施工方法。The piping construction method according to claim 1, wherein a water flow device is connected in advance to one end of the water flow pipe in place of a joint.
JP2002317154A 2002-10-31 2002-10-31 Piping work execution method Pending JP2004150145A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008095925A (en) * 2006-10-16 2008-04-24 Maruichi Fujii:Kk Terminal pipe for header pipe
JP2021085502A (en) * 2019-11-29 2021-06-03 株式会社タブチ Piping renewal method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008095925A (en) * 2006-10-16 2008-04-24 Maruichi Fujii:Kk Terminal pipe for header pipe
JP2021085502A (en) * 2019-11-29 2021-06-03 株式会社タブチ Piping renewal method
JP7478405B2 (en) 2019-11-29 2024-05-07 株式会社タブチ Piping renewal method

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