JP3964984B2

JP3964984B2 - Pipe connection structure of water heater

Info

Publication number: JP3964984B2
Application number: JP15533498A
Authority: JP
Inventors: 辰夫栗山
Original assignee: パロマ工業株式会社
Priority date: 1998-05-20
Filing date: 1998-05-20
Publication date: 2007-08-22
Anticipated expiration: 2018-05-20
Also published as: JPH11325605A

Description

【０００１】
【発明の属する技術分野】
この発明は、湯沸器のパイプ接続構造に関し、詳しくは、たとえば、湯沸器の水側本体に対する給水管と給湯管の接続構造に関する。
【０００２】
【従来の技術】
従来の湯沸器のパイプ接続構造は、たとえば、図８に示されているように、給水管４′は水側本体Ｗ′の図示右方に接続されて内胴２′の外面を巻回して熱交換器３′に配管され、また、給湯管７′は内胴２′の図示左側を下方に導かれ、クイックファスナ、接続管を介して給湯接手９′に直接接続されている。そして、給湯接手９′には水側本体Ｗ′の下部又は図示左方に接続された混合管を接続している（以上の詳細は図示されていないが従来より一般に採られている公知の配管手段である）。
【０００３】
【発明が解決しようとする課題】
しかしながら、こうした従来のパイプ接続構造では、給水管と混合管を１つの固定板で接続固定しようとすると、２つのパイプを１つの固定板で抜け止め保持する前にそれぞれのパイプを水側本体に挿入した状態で２つのパイプが抜脱しないように手で押えつけていないと固定板による保持ができないので、その作業性が極めて悪く、水側本体に対する給水管と混合管の接続作業には多くの時間を要するために一般には水側本体に対する給水管と混合管の接続固定は各別に行っている。
また、給湯管が給湯接手に至るまでの間にクイックファスナ及び接続管が必要なため、給湯通路が複雑となるばかりでなく、構成部品も多くなり、メンテナンスにも困難性がともなうものであった。
【０００４】
この発明の湯沸器のパイプ接続構造は上記課題を解決し、たとえば、水側本体に対し給水管と給湯管を接続する場合、スライド式固定金具のスライド量に応じて片方ずつ順次抜け止め保持して仮止めできるようにして、上記従来の技術の問題点を解消した湯沸器のパイプ接続構造の提供を目的としている。
【０００５】
【課題を解決するための手段】
上記課題を解決するこの発明の請求項１の湯沸器のパイプ接続構造は、
湯沸器のパイプ接続部に２個以上のパイプ接続口を偏倚隣接して備え、該２個以上のパイプ接続口に係合部を有するパイプの先端接続部を挿入し、
上記パイプ接続口に挿入された２個以上のパイプに対し、先端にそれぞれのパイプの抜け止め部を有し基端には位置決めストッパーを備えたスライド式固定金具を直角方向へ直線的にスライドさせ、そのスライド量に応じて上記各々のパイプの係合部に抜け止め部が順次係合して上記パイプを１本ずつ順番に抜け止め保持して接続固定できるようにしたことを要旨とする。
【０００６】
上記課題を解決するこの発明の請求項２の湯沸器のパイプ接続構造は、
上記請求項１の湯沸器における水側本体のフランジ面に給水管接続口と給湯管接続口を偏倚隣接して備え、
上記給水管接続口と給湯管接続口に環状の係合凸条を有する給水管と給湯管の先端接続部をシール材を介在して挿入し、
上記給水管と給湯管に対し、先端に抜け止め部を有し基端には位置決め用のストッパーを備えたスライド式固定金具を直角方向へ直線的にスライドさせ、そのスライド量に応じて上記給水管と給湯管の係合凸条に抜け止め部が順次係合して給水管と給湯管を１本ずつ順番に抜け止め保持して水側本体のフランジ面に給水管と給湯管を接続固定できるようにしたことを要旨とする。
【０００７】
上記課題を解決するこの発明の請求項３の湯沸器のパイプ接続構造は、
上記請求項２の給水管と給湯管の先端接続部を鍔出し管に形成して環状の係合凸条を備えたことを要旨とする。
【０００８】
上記課題を解決するこの発明の請求項４の湯沸器のパイプ接続構造は、
上記請求項２のスライド式固定金具は板状体の先端部が上記給水管接続口と給湯管接続口に対応する位置に給水管の外径に適合する係合凹孔を有する抜け止め部に形成され、基端部は位置決め用ストッパーに屈折形成されていることを要旨とする。
【０００９】
上記課題を解決するこの発明の請求項５の湯沸器のパイプ接続構造は、
上記請求項２の水側本体のフランジ面の両側に上記スライド式固定金具をガイドするガイド部を備えたことを要旨とする。
【００１０】
上記課題を解決するこの発明の請求項６の湯沸器のパイプ接続構造は、
上記請求項２の給水管と給湯管を抜け止め保持したスライド式固定金具を１個所のみでビス止め固定したことを要旨とする。
【００１１】
上記構成を有するこの発明の請求項１の湯沸器のパイプ接続構造は、湯沸器のパイプ接続部に偏倚隣接して挿入された２個以上のパイプは、スライド式固定金具を上記各々のパイプに対し直角方向へ直線的にスライドさせるだけで、そのスライド量に応じてパイプの係合部に抜け止め部が順次係合されて２個以上のパイプを１本ずつ順番に抜け止め保持してパイプ接続部に固定する。この結果、パイプの接続作業が能率的に、しかも、適切に行い得て作業性は著しく向上する。
【００１２】
上記構成を有するこの発明の請求項２の湯沸器のパイプ接続構造は、湯沸器の水側本体のフランジ面に偏倚隣接して挿入された給水管と給湯管は、スライド式固定金具を上記給水管と給湯管に対し直角方向へ直線的にスライドさせるだけで、そのスライド量に応じて給水管と給湯管の係合凸条に抜け止め部が順次係合されて給水管と給湯管を１本ずつ順番に抜け止め保持して水側本体のフランジ面に接続固定する。この結果、湯沸器の水側本体に対する給水管と給湯管の接続が簡単な接続作業で適切、かつ、能率的に行える。
【００１３】
上記構成を有するこの発明の請求項３の湯沸器のパイプ接続構造は、給水管と給湯管の先端接続部を鍔出し管に形成して係合凸条を備えたから、係合凸条の作成が容易となる。この結果、均一な係合凸条がコスト安に形成できる。
【００１４】
上記構成を有するこの発明の請求項４の湯沸器のパイプ接続構造は、スライド式固定金具は板状体の先端部に係合凹孔を有する抜け止め部を形成し、基端部には位置決め用のストッパーを屈折形成しているから、給水管と給湯管に対し直角方向へ直線的に予め決められた一定のストロークスライドさせるたけで偏倚隣接している給水管と給湯管の抜け止め固定が１本ずつ順番に行える。この結果、接続作業は簡易で、しかも、確実に行いうる。
【００１５】
上記構成を有するこの発明の請求項５の湯沸器のパイプ接続構造は、水側本体にスライド式固定金具のガイド部を設けたので、スライド式固定金具のスライド動作が狂いなく確実に行いうる。この結果、スライド式固定金具による給水管と給湯管の抜け止め固定が簡易に、しかも、適切に行える。
【００１６】
上記構成を有するこの発明の請求項６の湯沸器のパイプ接続構造は、スライド式固定金具が給水管と給湯管を接続固定した位置において１個所のみでビス止めするだけでスライド方向へ動くことのないように固定できる。この結果、スライド式固定金具の固定作業が容易に行え、給水管と給湯管の抜け止め固定が不慮に外れるようなこともない。
【００１７】
【発明の実施の形態】
以上説明したこの発明の構成、作用を一層明らかにするために、以下にこの発明の湯沸器のパイプ接続構造の好適な実施の形態の一例について図面を参照して詳細に説明する。
【００１８】
図面はこの発明のパイプ接続構造を元止式ガス瞬間湯沸器の給水管と給湯管の接続手段に適用した場合を例示したものであって、Ｗは湯沸器の水側本体で、給水接手１からの水を、たとえば、ダイヤフラム式給水弁ＷＶを経て水ガバナで予め設定された一定の水量に制御して内胴２を巻回して熱交換器３に至る給水管４と混合管とに水量調節弁を介して導くためのもので、この水側本体Ｗの一側上部に設けられたフランジ面５に上記給水管４を接続する給水管接続口６と後述する給湯管７を接続する給湯管接続口８とを前後に一定の寸法ａだけ偏倚隣接して備え、同一フランジ面５で給水管４と給湯管７とが接続固定できるようになっており、たとえば、樹脂で一体成形するものである（図２参照）。
【００１９】
上記給湯管接続口８は水側本体Ｗに備えた給湯路から混合管（ともに図示せず）を経て給湯接手９に連通されており、上記給湯管接続口８には熱交換器３から導出された給湯管７が接続される。
【００２０】
上記水側本体Ｗのフランジ面５に備えた給水管接続口６には、給水管４の先端接続部１０を鍔出し管に形成して給水管４の先端接続部１０に環状の係合凸条１１を備え、給水管４の先端接続部１０を給水管接続部６と係合凸条１１との間にシール材（Ｏリング）１２を介在して挿入し、また、給湯管接続口８には、給湯管７の先端接続部１３を鍔出し管に形成して給湯管７の先端接続部１３に環状の係合凸条１４を備え、給湯管７の先端接続部１３を給湯管接続部１３と係合凸条１４との間にシール材（Ｏリング）１５を介在して挿入し、給水管４と給湯管７をフランジ面５に偏倚隣接して挿入セットし仮接続できるようになっている。
【００２１】
Ａはスライド式固定金具で、板状体の先端部に上記給水管接続部６と給湯管接続口８に対応する位置にそれぞれの接続口６、８に挿入セットして仮接続された給水管４と給湯管７の外径に適合する係合凹孔１６、１７を有する抜け止め部１８、１９が段違い状に形成され、基端部には位置決め用のストッパー２０が下方へ直角に折曲げて形成され、その上部中央に押動片２１が切り抜き起立して形成されている。
【００２２】
２２、２３は上記スライド式固定金具Ａをガイドするためのガイド部で、水側本体Ｗのフランジ面５の両側に一体に設けられ、スライド式固定金具Ａの横幅と略同一で、しかも、その板厚と略同一の凹溝２４、２５を有しており、この凹溝２４、２５にスライド式固定金具Ａの両側縁を挿通支持せしめることによりスライド式固定金具Ａのスライド動作がこのガイド部２２、２３に沿って確実に行えるようになっている。
【００２３】
そこで、スライド式固定金具Ａがガイド部２２、２３にガイドされて上記給水管４と給湯管７に対し直角方向へ直線的に一定のストロークだけスライドすることで、そのスライド量に応じて給水管４と給湯管７の係合凸条１１、１４に抜け止め部１８、１９が順次係合して給水管４と給湯管７を１本ずつ順番に抜け止め保持して水側本体Ｗのフランジ面５に給水管４と給湯管７が接続固定できるようになっている。
【００２４】
詳しくは、先ず、スライド式固定金具Ａを一定のストロークｂだけスライドさせると、手前に位置する給湯管７を一方の先端抜け止め部１９が給湯管７の先端接続部１３の係合凸条１４に係合されて抜け止め保持し仮止めする（図３（イ）の状態参照）。このとき、給水管４は未だ抜け止め保持されていない。
次いで、一定のストロークｃだけスライド式固定金具Ａをさらにスライドさせると、後方に偏倚して位置する給水管４を他方の先端抜け止め部１８が給水管４の先端接続部１０の係合凸条１１に係合されて抜け止め保持するとともに、双方の係合凹孔１６、１７が給水管４と給湯管７とに同時に嵌合され、給水管４と給湯管７はスライド式固定金具Ａで抜脱することのないよう強固、かつ、気密に接続固定される（図３（ロ）の状態参照）。
【００２５】
上記一連の接続固定動作は、スライド式固定金具Ａの基端部の中央上部に起立している押動片２１で押動すると、スライド式固定金具Ａはガイド部２２、２３にガイドされて直線的に押動されてスライドし、基端部の位置決めストッパー２０が水側本体Ｗのフランジ面５の側面に当るまでスライドしたところで、上述したように給水管４と給湯管７をスライド式固定金具Ａで１本ずつ順番に抜け止め保持して水側本体Ｗのフランジ面５に給水管４と給湯管７を確実に接続固定するものである。
【００２６】
２６は上記一連の接続固定動作で給水管４と給湯管７を抜け止め保持したスライド式固定金具Ａをその位置に固定するための止めビスで、スライド式固定金具Ａの１個所のみでビス止め固定するだけでスライド式固定金具Ａは所定位置に固定されてみだりに移動することがないものである。なお、２６ａはスライド式固定金具Ａに穿ったビス挿通孔、２６ｂはフランジ面５に穿った雌ネジ孔である。
【００２７】
なお、図中２７は水抜き栓、２８はガス管接手、２９はフレキシブル出湯管で、先端にキッチンシャワーを備えている。３０は操作ボタン、３１は電装基板、３２は乾電池ケース、３３はガスバーナ、ＦＲはフレームロッド、ＴＣは熱電対、３４は点火ロッド、３５は湯沸器のバックカバーである。
【００２８】
以上この発明の実施の形態の一例について説明したが、この発明はこうした実施の形態に何等限定されるものではなく、この発明の要旨を逸脱しない範囲において種々なる形態で実施しうることは勿論である。
たとえば、上記実施の形態では給水管と給湯管の２本のパイプを接続固定するものであったが、２個以上のパイプを偏倚隣接して接続固定することも可能である。また、各々のパイプの先端接続部を鍔出し管に形成して環状の係合凸条を備えたが、別体の環状凸条をパイプの先端接続部に固定して備えてもよい。さらに、スライド式固定金具の押動片を廃して位置決めストッパーが押動片を兼備してもよい。
【００２９】
【発明の効果】
この発明の湯沸器のパイプ接続構造は以上説明したような形態で実施され、以下に記載されるような効果を奏する。
【００３０】
この発明の請求項１の湯沸器のパイプ接続構造によれば、パイプ接続部に配列された２個以上のパイプは、スライド式固定金具を上記パイプに対し直角方向へ直線的にスライドさせるだけで、そのスライド量に応じてパイプの係合部に抜け止め部が順次係合されて２個以上のパイプを１本ずつ順番に抜け止め保持して固定するから、２個以上のパイプの接続作業が簡易に、しかも、適切に行いうる。したがって、作業性はよく、作業能率は著しく向上する。
【００３１】
この発明の請求項２の湯沸器のパイプ接続構造によれば、湯沸器の水側本体のフランジ面に給水管と給湯管がスライド式固定金具で１本ずつ順番に抜け止め保持して接続固定できるから、従来のようにクイックファスナ及び接続管は不要となって給湯通路がすっきりとなるために部品点数の減少と相まってメンテナンスが容易になるばかりでなく、簡単な接続作業で給水管と給湯管の適切、かつ、確実な接続固定が行える。
【００３２】
この発明の請求項３の湯沸器のパイプ接続構造によれば、給水管と給湯管の先端接続部を鍔出し管に形成して係合凸条を備えたから、均一な係合凸条がコスト安に形成できる。
【００３３】
この発明の請求項４の湯沸器のパイプ接続構造によれば、先端部に係合凹孔を有する抜け止め部を形成し、基端部には位置決め用のストッパーを備えた板状体のスライド式固定金具としたから、給水管と給湯管に対し直角方向へ直線的に一定のストロークスライドさせるだけで給水管と給湯管が１本ずつ順番に確実に抜け止め固定され、接続作業の簡易化と相まって作業性は向上する。
【００３４】
この発明の請求項５の湯沸器のパイプ接続構造によれば、スライド式固定金具はガイド部にガイドされて確実にスライドするから、スライド式固定金具のスライド動作が正確に行い得て給水管と給湯管の抜け止め固定が常時適切に行え作業性はさらに向上する。
【００３５】
この発明の請求項６の湯沸器のパイプ接続構造によれば、給水管と給湯管を抜け止め固定したスライド式固定金具を１個所でビス止めして固定するから、給水管と給湯管の抜け止め固定が不慮に外れるようなことはなく、また、その固定作業も簡易に行いうる。
【図面の簡単な説明】
【図１】この発明のパイプ接続構造を適用した湯沸器の一例を示したフロントカバーを取り外した状態の全体正面図である。
【図２】水側本体だけの正面図である。
【図３】そのフランジ面だけの側面図で、（イ）は一方の給湯管だけを仮止めした状態を示し、（ロ）は給湯管と給水管の双方を完全に抜け止め固定した状態を示す。
【図４】フランジ面とスライド式固定金具を分離して示した側面図である。
【図５】フランジ面の接続口と接続すべきパイプを分離して示した断面図である。
【図６】図３（ロ）のＸ−Ｘ線の断面図である。
【図７】スライド式固定金具だけの斜視図である。
【図８】従来例を示したフロントカバーを取り外した状態の全体正面図である。
【符号の説明】
Ｗ…水側本体
４…給水管
５…フランジ面
６…給水管接続口
７…給湯管
８…給湯管接続口
１０…給水管の先端接続部
１１…環状の係合凸条
１３…給湯管の先端接続部
１４…環状の係合凸条
Ａ…スライド式固定金具
１６…係合凹孔
１７…係合凹孔
１８…抜け止め部
１９…抜け止め部
２０…位置決め用のストッパー
２２…ガイド部
２３…ガイド部
２６…止めビス[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pipe connection structure for a water heater, and more particularly, for example, to a connection structure for a water supply pipe and a hot water supply pipe to a water-side main body of the water heater.
[0002]
[Prior art]
In the conventional water heater pipe connection structure, for example, as shown in FIG. 8, the water supply pipe 4 'is connected to the right side of the water-side main body W' and wound around the outer surface of the inner body 2 '. The hot water supply pipe 7 'is led downward on the left side of the inner cylinder 2' in the figure and is directly connected to the hot water supply joint 9 'via a quick fastener and a connecting pipe. The hot-water supply joint 9 'is connected to a mixing pipe connected to the lower part of the water-side main body W' or to the left of the figure (the above-mentioned details are not shown but are well-known pipes that have been generally used in the past). Means).
[0003]
[Problems to be solved by the invention]
However, in such a conventional pipe connection structure, when the water supply pipe and the mixing pipe are to be connected and fixed with a single fixing plate, the two pipes are attached to the water-side body before the two pipes are retained by the single fixing plate. Since it cannot be held by the fixing plate unless it is pressed by hand so that the two pipes are not pulled out in the inserted state, its workability is extremely poor, and there are many operations for connecting the water supply pipe and the mixing pipe to the water side body. In general, the connection and fixing of the water supply pipe and the mixing pipe to the water-side main body are performed separately.
In addition, since the quick fastener and the connecting pipe are required before the hot water supply pipe reaches the hot water supply joint, not only the hot water supply passage becomes complicated, but also the number of components increases and maintenance is difficult. .
[0004]
The pipe connection structure of the water heater of the present invention solves the above-mentioned problem. For example, when connecting a water supply pipe and a hot water supply pipe to the water side main body, one side is sequentially retained according to the sliding amount of the slide type fixing bracket. Therefore, it is an object of the present invention to provide a pipe connection structure for a water heater that can be temporarily fixed so as to eliminate the problems of the above-described conventional techniques.
[0005]
[Means for Solving the Problems]
The pipe connection structure of the water heater according to claim 1 of the present invention for solving the above-described problem is
Two or more pipe connection ports are provided adjacent to the pipe connection portion of the water heater, and a tip connection portion of a pipe having an engagement portion is inserted into the two or more pipe connection ports,
For two or more pipes inserted into the pipe connection port, slide a slide-type fixture with a pipe stopper at the tip and a positioning stopper at the base. The gist is that the retaining portions are sequentially engaged with the engaging portions of the pipes according to the sliding amount so that the pipes can be retained and fixed in order by retaining the pipes one by one.
[0006]
The pipe connection structure of the water heater according to claim 2 of the present invention for solving the above-mentioned problems is as follows.
A water supply pipe connection port and a hot water supply pipe connection port are provided adjacent to the flange surface of the water-side main body of the water heater of claim 1 above,
Insert the water supply pipe having a ring-shaped engagement protrusion at the water supply pipe connection port and the hot water supply pipe connection port and the tip connection part of the hot water supply pipe with a sealant interposed therebetween,
A sliding fixing bracket having a stopper at the tip and a positioning stopper at the base is linearly slid in a right angle direction with respect to the water supply pipe and the hot water supply pipe, and the water supply according to the amount of sliding. The stoppers are sequentially engaged with the engaging protrusions of the pipe and the hot water pipe, so that the water pipe and the hot water pipe are kept from coming off one by one in order and the water pipe and the hot water pipe are connected and fixed to the flange surface of the water side body. The gist is to make it possible.
[0007]
The pipe connection structure of the water heater according to claim 3 of the present invention for solving the above-mentioned problems is as follows.
The gist of the present invention is that the tip connecting portion of the water supply pipe and the hot water supply pipe of the second aspect is formed in the brewing pipe and provided with an annular engagement protrusion.
[0008]
The pipe connection structure of the water heater according to claim 4 of the present invention for solving the above-mentioned problems is as follows.
The slide-type fixing bracket according to claim 2 is provided with a retaining portion having an engagement concave hole adapted to the outer diameter of the water supply pipe at a position corresponding to the water supply pipe connection port and the hot water supply pipe connection port. The gist is that the base end portion is formed and refracted on the positioning stopper.
[0009]
The pipe connection structure of the water heater according to claim 5 of the present invention for solving the above-mentioned problems is as follows.
The gist of the invention is that guide portions for guiding the slide-type fixing bracket are provided on both sides of the flange surface of the water-side main body according to the second aspect.
[0010]
The pipe connection structure of the water heater according to claim 6 of the present invention for solving the above-described problem is
The gist of the invention is that the slide-type fixing metal fitting that holds the water supply pipe and the hot water supply pipe of the second aspect of the present invention is screwed and fixed at only one place.
[0011]
In the water heater pipe connection structure according to claim 1 of the present invention having the above-described configuration, the two or more pipes inserted adjacent to the pipe connection portion of the water heater are each provided with a slide type fixing bracket. By simply sliding linearly in a direction perpendicular to the pipe, the retaining portions are sequentially engaged with the engaging portions of the pipes according to the sliding amount, and two or more pipes are retained and retained in order one by one. And fix to the pipe connection. As a result, the pipe connection work can be performed efficiently and appropriately, and the workability is remarkably improved.
[0012]
The pipe connection structure of the water heater according to claim 2 of the present invention having the above-described structure is characterized in that the water supply pipe and the hot water supply pipe inserted adjacent to the flange surface of the water-side main body of the water heater include a slide-type fixing bracket. By simply sliding linearly in a direction perpendicular to the water supply pipe and the hot water supply pipe, the retaining portions are sequentially engaged with the engagement protrusions of the water supply pipe and the hot water supply pipe according to the sliding amount, and the water supply pipe and the hot water supply pipe are connected. Are connected and fixed to the flange surface of the water side main body one by one. As a result, the connection of the water supply pipe and the hot water supply pipe to the water side main body of the water heater can be performed appropriately and efficiently by a simple connection operation.
[0013]
Since the pipe connection structure of the water heater according to claim 3 of the present invention having the above-described configuration is provided with the engagement protrusions by forming the tip connection portion of the water supply pipe and the hot water supply pipe in the discharge pipe, Easy to create. As a result, uniform engaging ridges can be formed at low cost.
[0014]
In the pipe connection structure of the water heater according to claim 4 of the present invention having the above-described configuration, the slide-type fixing bracket forms a retaining portion having an engagement concave hole at the distal end portion of the plate-like body, and the proximal end portion has Since the positioning stopper is refracted, it is fixed to prevent the water supply and hot water supply pipes from being displaced by simply sliding a predetermined stroke linearly in a direction perpendicular to the water supply and hot water supply pipes. Can be done one by one in order. As a result, the connection work is simple and can be performed reliably.
[0015]
In the pipe connection structure of the water heater according to claim 5 of the present invention having the above configuration, since the guide portion of the slide type fixing bracket is provided in the water side main body, the sliding operation of the sliding type fixing bracket can be reliably performed without any error. . As a result, it is possible to easily and appropriately fix the water supply pipe and the hot water supply pipe with the slide type fixing bracket.
[0016]
The pipe connection structure of the water heater according to claim 6 of the present invention having the above-described structure is such that the slide type fixing bracket moves in the sliding direction only by screwing at one place at the position where the water supply pipe and the hot water supply pipe are connected and fixed. Can be fixed so that there is no. As a result, the fixing work of the slide-type fixing bracket can be easily performed, and the fixing of the water supply pipe and the hot water supply pipe is not accidentally disconnected.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
In order to further clarify the configuration and operation of the present invention described above, an example of a preferred embodiment of a pipe connection structure for a water heater according to the present invention will be described below in detail with reference to the drawings.
[0018]
The drawing exemplifies a case where the pipe connection structure of the present invention is applied to a connection means between a water supply pipe and a hot water supply pipe of a stop-type gas instantaneous water heater, where W is a water-side main body of the water heater, The water from the joint 1 is controlled to a predetermined amount of water set in advance by a water governor through a diaphragm-type water supply valve WV, for example, and the inner pipe 2 is wound to reach the heat exchanger 3 and the water supply pipe 4 and the mixing pipe A water supply pipe connection port 6 for connecting the water supply pipe 4 and a hot water supply pipe 7 to be described later are connected to a flange surface 5 provided on one upper side of the water side main body W. The hot water supply pipe connection port 8 is provided adjacent to the front and rear by a certain dimension a so that the water supply pipe 4 and the hot water supply pipe 7 can be connected and fixed on the same flange surface 5, for example, integrally molded with resin (See FIG. 2).
[0019]
The hot water pipe connection port 8 communicates with a hot water connection 9 through a mixing pipe (both not shown) from a hot water passage provided in the water side main body W, and is led out from the heat exchanger 3 to the hot water pipe connection port 8. The hot water supply pipe 7 thus connected is connected.
[0020]
In the water supply pipe connection port 6 provided on the flange surface 5 of the water-side main body W, the tip connection part 10 of the water supply pipe 4 is formed as a squeeze pipe, and an annular engagement convexity is formed on the tip connection part 10 of the water supply pipe 4. The tip connection portion 10 of the water supply pipe 4 is inserted with the seal material (O-ring) 12 interposed between the water supply pipe connection portion 6 and the engaging protrusion 11, and the hot water supply pipe connection port 8 is provided. The tip connection part 13 of the hot water supply pipe 7 is formed as a brewing pipe, the tip connection part 13 of the hot water supply pipe 7 is provided with an annular engagement protrusion 14, and the tip connection part 13 of the hot water supply pipe 7 is connected to the hot water supply pipe. A seal member (O-ring) 15 is inserted between the portion 13 and the engaging projection 14 so that the water supply pipe 4 and the hot water supply pipe 7 are inserted adjacent to the flange surface 5 and temporarily connected. It has become.
[0021]
A is a slide-type metal fitting, and a water supply pipe temporarily inserted by being inserted and set in each of the connection ports 6 and 8 at a position corresponding to the water supply pipe connection portion 6 and the hot water supply pipe connection port 8 at the tip of the plate-like body. 4 and the retaining recesses 18 and 19 having engagement concave holes 16 and 17 adapted to the outer diameters of the hot water supply pipes 7 are formed in steps, and a positioning stopper 20 is bent downward at a right angle at the base end portion. The pushing piece 21 is formed by cutting and standing at the center of the upper portion.
[0022]
Reference numerals 22 and 23 are guide portions for guiding the slide-type fixing bracket A, which are integrally provided on both sides of the flange surface 5 of the water-side main body W, and are substantially the same as the lateral width of the slide-type fixing bracket A. Concave grooves 24 and 25 having substantially the same thickness as the plate thickness are provided, and the sliding movement of the slide type fixing bracket A is performed by inserting and supporting both side edges of the slide type fixing bracket A in the concave grooves 24 and 25. 22 and 23 can be reliably performed.
[0023]
Therefore, the slide-type fixing bracket A is guided by the guide portions 22 and 23 and slides linearly in a direction perpendicular to the water supply pipe 4 and the hot water supply pipe 7 by a certain stroke, so that the water supply pipes according to the sliding amount. 4 and the hot water supply pipe 7 are engaged with the protruding protrusions 11 and 14, respectively, so that the retaining portions 18 and 19 are sequentially engaged to hold the water supply pipe 4 and the hot water supply pipe 7 one by one. A water supply pipe 4 and a hot water supply pipe 7 can be connected and fixed to the surface 5.
[0024]
Specifically, first, when the slide-type fixing bracket A is slid by a certain stroke b, one end retaining portion 19 of the hot water supply pipe 7 positioned at the front is engaged with the engagement protrusion 14 of the front end connection portion 13 of the hot water supply pipe 7. Is retained and temporarily fixed (see the state of FIG. 3A). At this time, the water supply pipe 4 is not yet retained.
Next, when the slide-type fixing bracket A is further slid by a fixed stroke c, the other tip end locking portion 18 of the water supply pipe 4 that is biased rearward is engaged with the protruding protrusion of the tip connection portion 10 of the water supply pipe 4. 11, and the engagement concave holes 16 and 17 are fitted into the water supply pipe 4 and the hot water supply pipe 7 at the same time. The water supply pipe 4 and the hot water supply pipe 7 are slidable fixing brackets A. It is firmly and airtightly connected and fixed so as not to be pulled out (see the state of FIG. 3B).
[0025]
In the series of connection fixing operations described above, when the pushing piece 21 standing at the center upper portion of the base end portion of the sliding type fixing bracket A is pushed, the sliding type fixing bracket A is guided by the guide portions 22 and 23 and linearly moved. When the base end positioning stopper 20 is slid until it comes into contact with the side surface of the flange surface 5 of the water side main body W, the water supply pipe 4 and the hot water supply pipe 7 are slidably fixed as described above. The water supply pipe 4 and the hot water supply pipe 7 are securely connected and fixed to the flange surface 5 of the water-side main body W by holding them one by one in order.
[0026]
Reference numeral 26 denotes a set screw for fixing the slide type fixing bracket A holding the water supply pipe 4 and the hot water supply pipe 7 in the above-described series of connection fixing operations, and fixing the screw at only one position of the slide type fixing bracket A. By simply fixing, the slide type fixing bracket A is fixed at a predetermined position and does not move excessively. Reference numeral 26a denotes a screw insertion hole formed in the slide type fixing bracket A, and 26b denotes a female screw hole formed in the flange surface 5.
[0027]
In the figure, 27 is a drain plug, 28 is a gas pipe joint, 29 is a flexible hot water outlet, and has a kitchen shower at the tip. 30 is an operation button, 31 is an electrical board, 32 is a dry battery case, 33 is a gas burner, FR is a frame rod, TC is a thermocouple, 34 is an ignition rod, and 35 is a back cover of a water heater.
[0028]
Although an example of the embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and can of course be implemented in various forms without departing from the gist of the present invention. is there.
For example, in the above embodiment, the two pipes of the water supply pipe and the hot water supply pipe are connected and fixed, but it is also possible to connect and fix two or more pipes adjacent to each other. Moreover, although the tip connection part of each pipe was formed in the squeezing pipe and provided with the annular engagement ridge, a separate annular ridge may be provided fixed to the tip connection part of the pipe. Furthermore, the pushing piece of the slide type fixing bracket may be eliminated, and the positioning stopper may also serve as the pushing piece.
[0029]
【The invention's effect】
The pipe connection structure of the water heater according to the present invention is implemented in the form as described above, and has the following effects.
[0030]
According to the pipe connection structure of the water heater according to the first aspect of the present invention, the two or more pipes arranged in the pipe connection part simply slide the slide-type fixing bracket in a direction perpendicular to the pipe. Then, according to the sliding amount, the retaining portions are sequentially engaged with the engaging portions of the pipes, and the two or more pipes are retained and fixed one by one in order. Work can be done easily and appropriately. Therefore, workability is good and work efficiency is remarkably improved.
[0031]
According to the pipe connection structure of the water heater according to claim 2 of the present invention, the water supply pipe and the hot water supply pipe are held on the flange surface of the water-side main body of the water heater one by one by the slide-type fixing bracket. Since the connection can be fixed, quick fasteners and connection pipes are no longer necessary, and the hot water supply passage is clean, which not only facilitates maintenance in conjunction with the reduction in the number of parts, but also enables simple connection work to connect the water supply pipes. Appropriate and reliable connection and fixing of the hot water supply pipe can be performed.
[0032]
According to the pipe connection structure of the water heater according to claim 3 of the present invention, since the tip connection portion of the water supply pipe and the hot water supply pipe is formed in the brewing pipe and the engagement protrusion is provided, the uniform engagement protrusion is provided. It can be formed at low cost.
[0033]
According to the pipe connection structure of the water heater according to claim 4 of the present invention, the plate-like body having the stopper portion having the engagement concave hole at the distal end portion and the positioning stopper at the proximal end portion is formed. Since it is a slide-type fixing bracket, the water supply pipe and the hot water supply pipe can be securely attached and secured one by one in a straight line by sliding the straight line in a direction perpendicular to the water supply pipe and the hot water supply pipe. Workability is improved in combination with conversion.
[0034]
According to the pipe connection structure of the water heater according to claim 5 of the present invention, the slide type fixing bracket is guided by the guide portion and slides reliably, so that the sliding operation of the sliding type fixing bracket can be performed accurately and the water supply pipe And the hot water pipe can be fixed properly at all times, further improving workability.
[0035]
According to the pipe connection structure of the water heater according to claim 6 of the present invention, the slide-type fixing bracket, which prevents the water supply pipe and the hot water supply pipe from being detached, is fixed by screwing in one place. There is no case where the retaining fixing is not accidentally removed, and the fixing operation can be easily performed.
[Brief description of the drawings]
FIG. 1 is an overall front view showing an example of a water heater to which a pipe connection structure of the present invention is applied, with a front cover removed.
FIG. 2 is a front view of only a water-side main body.
FIG. 3 is a side view of only the flange surface, (A) shows a state where only one hot water supply pipe is temporarily fixed, and (B) shows a state where both of the hot water supply pipe and the water supply pipe are completely prevented from coming off and fixed. Show.
FIG. 4 is a side view showing a flange surface and a slide-type fixing bracket separately.
FIG. 5 is a cross-sectional view showing a pipe to be connected to a connection port on a flange surface in isolation.
6 is a cross-sectional view taken along line XX in FIG.
FIG. 7 is a perspective view of only a slide-type fixing bracket.
FIG. 8 is an overall front view showing a conventional example with a front cover removed.
[Explanation of symbols]
W ... Water side main body 4 ... Water supply pipe 5 ... Flange surface 6 ... Water supply pipe connection port 7 ... Hot water supply pipe 8 ... Hot water supply pipe connection port 10 ... Tip connection portion 11 of water supply pipe ... Annular engagement protrusion 13 ... Tip connection portion 14 ... annular engagement ridge A ... sliding fixing bracket 16 ... engagement concave hole 17 ... engagement concave hole 18 ... retaining part 19 ... retaining part 20 ... positioning stopper 22 ... guide part 23 ... Guide part 26 ... Set screw

Claims

Two or more pipe connection ports are provided adjacent to the pipe connection portion of the water heater, and the tip connection portion of the pipe having an engagement portion is inserted into the two or more pipe connection ports.
For two or more pipes inserted into the pipe connection port, slide a fixed bracket with a stopper at each end and a positioning stopper at the base, linearly sliding in the right-angle direction. According to the sliding amount, the retaining portions are sequentially engaged with the engaging portions of the pipes so that the pipes can be retained and fixed in order by retaining the pipes one by one. Boiler pipe connection structure.

Provided with a water supply pipe connection port and a hot water supply pipe connection port on the flange surface of the water side body of the water heater.
Insert the water supply pipe having a ring-like engagement ridge into the water supply pipe connection port and the hot water supply pipe connection port and the tip connection part of the hot water supply pipe with a sealant interposed therebetween,
A slide-type fixing bracket having a stopper at the distal end and a positioning stopper at the base end is slid linearly in a perpendicular direction with respect to the water supply pipe and the hot water supply pipe, and the water supply pipe The stoppers are sequentially engaged with the engaging protrusions of the pipe and the hot water pipe to hold the water supply pipe and the hot water pipe one by one in order, and the water supply pipe and the hot water pipe are connected and fixed to the flange surface of the water side body. The pipe connection structure for a water heater according to claim 1, wherein the pipe connection structure is made possible.

3. A pipe connection structure for a water heater according to claim 2, further comprising an annular engaging ridge formed by forming a tip connection portion of the water supply pipe and the hot water supply pipe in a brewing pipe.

The slide type fixing bracket is formed in a retaining portion having an engagement concave hole adapted to the outer diameter of the water supply pipe at a position corresponding to the water supply pipe connection port and the hot water supply pipe connection port. 3. The pipe connection structure for a water heater according to claim 2, wherein the end portion is formed to be bent by a positioning stopper.

3. The pipe connection structure for a water heater according to claim 2, further comprising guide portions for guiding the slide-type fixing bracket on both sides of the flange surface of the water-side main body.

3. A pipe connection structure for a water heater according to claim 2, wherein said water supply pipe and said hot water pipe are fixed with screws only at one place.