JP3978405B2 - Pipe connection device for bathtub - Google Patents

Pipe connection device for bathtub Download PDF

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JP3978405B2
JP3978405B2 JP2003112081A JP2003112081A JP3978405B2 JP 3978405 B2 JP3978405 B2 JP 3978405B2 JP 2003112081 A JP2003112081 A JP 2003112081A JP 2003112081 A JP2003112081 A JP 2003112081A JP 3978405 B2 JP3978405 B2 JP 3978405B2
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bathtub
flange
tank
flow path
packing
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JP2004317030A (en
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光則 波多野
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株式会社ハタノ製作所
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【0001】
【発明の属する技術分野】
この発明は、浴槽壁部に設けられ、浴槽内に温水を吐出するようにした浴槽用配管連結装置に関する。
【0002】
【従来の技術】
従来、浴槽と給湯機とが配管接続されて、貯湯処理や追い焚き処理を行うようにした浴槽システムが周知である。この浴槽システムにおいては、浴槽の側壁に貫通状態に配管連結装置が取り付けられるとともに、この装置と室外の給湯機とが配管接続されている。そして、貯湯時には、給湯機から供給された温水を配管連結装置を介して浴槽内に導入するとともに、追い焚き時には、槽内の温水を配管連結装置から吸入して給湯機に送り込み、そこで再加熱した後、槽内に戻すようにしている。
【0003】
このような浴槽システムに用いられる配管連結装置としては、下記特許文献1に示すように、一端にフランジが設けられた鍔付き筒状の槽外取付具及び槽内取付具を具備するものが周知である。この配管連結装置は、槽外取付具がそのフランジを浴槽外面の取付孔周縁部に沿わせた状態に配置されるとともに、槽内取付具がそのフランジを浴槽内面の取付孔周縁部に圧接させる態様に、浴槽取付孔を通じて槽外取付具の筒孔にねじ込み固定されるよう構成されている。
【0004】
【特許文献1】
特開2001−65995号(3頁右欄、図1)
【0005】
【発明が解決しようとする課題】
上記従来の浴槽用配管連結装置においては、槽内取付具のフランジと浴槽内壁面との間には、リング状のゴム製平パッキンが介在されて、浴槽内面と槽内取付具との間の水密性が確保されている。しかしながら、長期間使用していくうちに、ゴムパッキンとフランジ及び浴槽内壁面との間の隙間から水分が徐々に浸入していき、場合によっては、水分が連結装置内部まで浸入してしまう恐れがあった。
【0006】
このため、従来においては、浴槽内面と浴槽配管連結装置との間の水密性を一段と向上させて、より高い信頼性を得ることが切望されている。
【0007】
この発明は、上記の実情に鑑みてなされたもので、浴槽内面との水密性をより一層向上させることができ、装置内部への水分の浸入を確実に防止することができる浴槽用配管連結装置を提供することを目的とする。
【0008】
【課題を解決するための手段】
上記目的を達成するため、この発明は、浴槽壁部の取付孔に貫通状態に組み付けられるとともに、外部から槽内に温水を供給するための配管が連結される浴槽用配管連結装置であって、一端外周にフランジが設けられ、そのフランジを浴槽外面における取付孔の周縁部に沿わせた状態に配置される槽外取付具と、一端外周にフランジが設けられ、そのフランジを浴槽内面における取付孔の周縁部に弾性パッキンを介して圧接させる態様に、取付孔を通じて前記槽外取付具に固定される鍔付き筒状の槽内取付具とを備え、前記槽内取付具のフランジにおける浴槽内面側に、周方向に沿って突条部が設けられてなるものを要旨としている。
【0009】
この発明の浴槽用配管連結装置によれば、槽内取付具のフランジに突条部を形成し、その突条部付きのフランジを弾性パッキンを介して浴槽内面に圧接するものであるため、突条部によってパッキンが押圧変形されて、パッキンとフランジとの間のシール部の密着面積が増大するとともに、そのシール部の水分浸入経路が複雑になり、シール部の水密性を向上させることができる。
【0010】
しかも、突条部周辺において、パッキンのフランジ及び浴槽内面に対する密着力が高められ、浴槽内面及びフランジ間の水密性をより一層向上させることができる。
【0011】
本発明においては、前記槽内取付具のフランジと前記弾性パッキンとの間に、前記突条部による前記パッキンの切り裂きを防止するための緩衝部材が設けられてなる構成を採用するのが好ましい。
【0012】
この構成を採用する場合には、パッキンが切り裂かれる等の不具合を確実に防止することができる。すなわち、槽内取付具は、槽外取付具にねじ込み等によって固定するものであるが、このねじ込み操作時に、突条部が直接パッキンに接触すると、突条部によってパッキンが擦り切れたり、切り裂かれたりする恐れがある。これに対し、突条部を緩衝部材を介してパッキンに圧接させる構成を採用した場合には、突条部の圧接によるパッキンへの応力を緩衝部材により分散して吸収できるので、応力の局部集中を回避でき、パッキンの切り裂き(ねじ切れ)等を有効に防止することができる。
【0013】
また本発明においては、前記突条部が複数条並列に設けられてなる構成を採用するのが望ましい。
【0014】
すなわちこの構成を採用する場合には、パッキンとフランジとの間のシール部の密着面積を、より一層増大できるとともに、そのシール部の水分浸入経路を、より一層複雑にすることができ、シール部の水密性を一段と向上させることができる。
【0015】
【発明の実施の形態】
図1ないし図3はこの発明の実施形態である浴槽用配管連結装置(P)を示す図である。これらの図に示すように、この実施形態の配管連結装置(P)は、浴槽(T)の側壁に設けられた取付孔(H)に取り付けられるものであって、浴槽(T)の外部に設けられた給湯機から供給される温水を浴槽(T)内に供給して、湯はり等の貯湯処理を行うことができる。更に浴槽(T)内の温水を吸い込んで給湯機に送り、そこで再加熱して、その高温の温水を浴槽(T)に戻して、追い焚き等の強制循環処理を行うこともできる。
【0016】
なお、この配管連結装置(P)は、この装置(P)が備える2つの外管接続部(1a)(1b)に対して、給湯機につながる往き管及び戻り管のどちらを接続しても使用可能な、いわゆる無極性タイプのものである。
【0017】
図1ないし図3に示すように、本実施形態の配管連結装置(P)は、槽外取付具(1)と、装置本体(10)と、フィルター部材(9)とを基本的な構成要素として備え、更に装置本体(10)は、槽内取付具(2)と、流路形成部材(3)とを備えている。
【0018】
槽外取付具(1)は、一端側(前面側)が開放され、かつ他端側(後面側)が閉塞された円筒形状の外筒体(12)と、その外筒体(12)の内部に同軸心上に配置される円筒形状の内筒体(11)と、外筒体(12)の一端外周に設けられた平板リング状のフランジ(15)と、外筒体(12)の他端閉塞壁に設けられ、かつ軸心方向に沿って他端側に延びる管状の第1及び第2外管接続部(1a)(1b)とを一体に有する金属製品をもって構成されている
内筒体(11)の内側空間は、第1流路(A)の一部として構成されるとともに、内筒体(11)及び外筒体(12)との間の空間は、第2流路(B)の一部として構成されており、上記第1外管接続部(1a)が第1流路(A)に連通されるとともに、第2外管接続部(1b)が第2流路(B)に連通されている。
【0019】
更に外筒体(11)の一端側内周面には、雌ねじ(14)が刻設されている。
【0020】
また内筒体(11)の内周面前端部には、合成ゴム製のオーリング(81)が収容配置される。
【0021】
槽外取付具(1)のフランジ(15)に設けられるリング状の合成ゴム製被覆パッキン(82)は、その内周面に沿って嵌合溝(82a)が形成されている。そして、この被覆パッキン(82)が、その嵌合溝(82a)をフランジ(15)に嵌め込むことにより、フランジ(15)の外周面ほぼ全域を被覆した状態で密着固定される。
【0022】
更に被覆パッキン(82)の前面側は、厚板状に形成されて、パッキン本体(82b)として構成されるとともに、そのパッキン本体(82b)の表裏面には、周方向に連続する複数の密着用突条リブ(82c)が一体に形成されている。
【0023】
図1ないし図4に示すように、装置本体(10)の槽内取付具(2)は、両端が開放された円筒形状の筒体(21)と、その筒体(21)の一端外周に設けられた平板リング状のフランジ(25)とを一体に有するポリアセテート樹脂等からなる鍔付き円筒形状の硬質合成樹脂成形品をもって構成されている。
【0024】
筒体(21)は、外周面に雄ねじ(24)が刻設されており、その雄ねじ(24)及び上記雌ねじ(14)を介して、上記槽外取付具(1)における外筒体(12)の筒孔内に螺着できるよう構成されている。
【0025】
更にフランジ(25)の前面側には、複数の円柱形のビス受け用ボス(26)が周方向に沿って所定の間隔おきに一体に形成されている(図3参照)。
【0026】
また図4及び図5に示すように、フランジ(25)の後面側には、互いに平行な2本の突条リブ(20)が周方向に連続して一体に形成されている。各リブ(20)は、断面山型形状で先端側が先細に形成されている。
【0027】
槽内取付具(2)と浴槽(T)の内壁との間に介在される弾性パッキン(83)は、フランジ(25)の形状に対応する平板リング状の合成ゴム成形品をもって構成されている。
【0028】
更にフランジ(25)とパッキン(83)との間に介在される緩衝部材(84)は、フランジ(25)の形状に対応する平板リング状に形成されている。この緩衝部材(84)は、軟質性ないしは弾力性を有するポリエチレン樹脂等の軟質合成樹脂の成形品をもって構成されている。
【0029】
そして、上記槽外取付具(1)のフランジ(15)が、浴槽(T)の外壁面における取付孔(H)の周縁部に沿うように配置された状態で、槽内取付具(2)のフランジ(15)が、緩衝部材(84)及びパッキン(83)を介して浴槽内壁面における取付孔(H)の周縁部に圧接されるようにして、槽内取付具(2)の筒体(21)が取付孔(H)を通じてねじ込み固定される。これにより、両取付具(1)(2)のフランジ(15)(25)が、浴槽側壁における取付孔周縁部を挟持することにより、両取付具(1)(2)が浴槽側壁に貫通状態に組付固定される。
【0030】
この組付状態においては、図5に示すように、槽内取付具(2)におけるフランジ(25)の後面側に、突条リブ(20)が形成されているため、このリブ(20)によって緩衝部材(84)及びパッキン(83)が押圧変形されて、パッキン(83)とフランジ(25)との間のシール部の密着面積が増大するとともに、シール部における水分の浸入経路が複雑になり、シール部の水密性を向上させることができる。更にリブ形成部周辺において、パッキン(83)のフランジ側及び浴槽壁面側に対する密着力が高められ、浴槽壁面及びフランジ(25)間の水密性をより一層向上させることができる。
【0031】
また、槽内取付具(2)を槽外取付具(1)にねじ込み固定する際には、リブ(20)が緩衝部材(84)を介してパッキン(83)に圧接させるものであるため、パッキン(83)が引き裂かれる等の不具合を確実に防止することができる。すなわち、槽内取付具(2)のねじ込み操作時に、リブ(20)が直接パッキン(83)に接触する場合には、リブ(20)がパッキン(83)に対し高い圧力で接触した状態で摺動するため、リブ(20)によってパッキン(83)が擦り切れたり、切り裂かれたりする恐れがある。これに対し、本実施形態においては、リブ(20)を緩衝部材(84)を介してパッキン(83)に圧接させるものであるため、リブ(20)の圧接によるパッキン(83)への応力を緩衝部材(84)により分散して吸収できるので、応力の局部集中を回避でき、パッキン(83)の切り裂き(ねじ切れ)等を有効に防止することができる。
【0032】
図6ないし図10に示すように、装置本体(10)の流路形成部材(3)は、流路形成部材本体(4)と、蓋体(6)とを備えている。
【0033】
流路形成部材本体(4)は、硬質合成樹脂の一体成形品からなり、細長円筒形状の筒体(41)と、その一端に設けられた区画室部材(5)とを有している。
【0034】
筒体(41)は、上記槽外取付具(1)における内筒体(11)の内部に適合状態に挿入できる大きさに形成されている。
【0035】
区画室部材(5)は、筒体(41)の一端に設けられた円板状の底壁(51)と、その底壁(51)の前面側外周を囲うようにして設けられた外周壁(52)とを一体に有している。この区画室部材(5)は、径方向の大きさが上記槽内取付具(2)のフランジ(25)とほぼ同じ大きさに形成されている。
【0036】
図6及び図7に示すように、区画室部材(5)は、その前面側に複数の仕切壁(53)が一体に形成されて、区画室部材(5)の内部が3つの室(5a)〜(5c)に区分けされている。このうち第1区画室(5a)は、図7に示すように区画室部材(5)の略中心部から右上部にかけての領域に形成されるとともに、第2区画室(5b)は、略左上部の領域に形成されている。更に排出室(5c)は、中心部左寄りの部分から下方斜め右寄りの部分にかけての領域に形成されている。なお、図7においては、発明の理解を容易にするため、仕切壁(53)が形成されている部分にハッチングを施しておく。
【0037】
区画室部材(5)における第1及び第2区画室(5a)(5b)間は、互いに独立して非連通状態に形成されている。更に第1区画室(5a)と吐出室(5c)との間は第1吐出弁設置口(53a)を介して連通されるとともに、第2区画室(5b)と吐出室(5c)との間は第2吐出弁設置口(53b)を介して連通されている。
【0038】
なお、仕切壁(53)における吐出弁設置口(53a)(53b)の両側部には、後述する弁部材(7a)(7b)を支持するための凹段部(54)(54)がそれぞれ形成されている。
【0039】
区画室部材(5)の第1区画室(5a)内における底壁(51)には、筒体(41)の内部に連通する第1開口(51a)が形成されており、第1区画室(5a)が、後述するように第1流路(A)に連通される。更に第2区画室(5b)内における底壁(51)には、筒体(51)の外部に連通する第2開口(51b)が形成されており、第2区画室(5b)が、後述するように第2流路(B)に連通される。
【0040】
区画室部材(5)の外周壁(52)における下部の側方寄りの位置には、吐出口(55)が形成され、この吐出口(55)介して吐出室(5c)が外部に開放されている。
【0041】
また図7及び図8に示すように、区画室部材(5)における底壁(51)の後面側外周部には、上記槽内取付具(2)の複数のビス受け用ボス(26)にそれぞれ対応して、各ボス(26)を収納可能なボス受け凹部(57)が周方向に所定の間隔おきに形成されている。更に区画室部材(5)における底壁(51)の前面側外周部には、ボス受け凹部(57)のいずれか3つに対応して、軸心方向に延びる3つの筒状のビス挿通部(56)が周方向に等間隔おきに形成されている。
【0042】
図9及び図10に示すように、蓋体(6)は、区画室部材(5)の前面開口部に対応する円板状の硬質合成樹脂成形品をもって構成されている。
【0043】
この蓋体(6)には、上記区画室部材(5)の第1吐出弁設置口(53a)に対応して、第1吸込弁設置口としての矩形状の第1吸込口(6a)が形成されるとともに、第2吐出弁設置口(53b)の近傍に対応して、第2吸込弁設置口としての矩形状の第2吸込口(6b)が形成されている。
【0044】
また、蓋体(6)の後面側には、第1及び第2吐出弁設置口(53a)(53b)に対応して、弁取付溝(61a)(61b)が形成されている。
【0045】
更に蓋体(6)の裏面側には、区画室部材(5)の3つのビス挿通部(56)に対応して、軸心方向に沿って延びる筒状の3つのビス挿通部(66)がそれぞれ形成されている。
【0046】
なお蓋体(6)の裏面側には、区画室部材(5)の仕切壁(53)の上端やビス挿通部(56)の上端を位置決め状態に収容するための溝(69)が形成されている。
【0047】
そして図1ないし図3に示すように、蓋体(6)及び流路形成部材本体(4)が、3本のタッピングビス(37)によって上記槽内取付具(2)に組付固定される。すなわち、流路形成部材本体(4)の筒体(41)が槽内取付具(2)の筒体(21)を通じて、槽外取付具(1)の内筒体(11)の筒孔に、上記オーリング(81)を介して適合状態に挿入されるとともに、流路形成部材本体(4)ボス受け凹部(57)内に槽内取付具(2)のボス(26)が挿入されることにより、流路形成部材本体(4)の3つのビス挿通部(56)が、槽内取付具(2)の複数のボス(26)のうち、対応するいずれか3つのボス(26)に適合される。更に蓋体(6)のビス挿通部(66)が流路形成部材本体(4)のビス挿通部(56)にそれぞれ適合状態に挿入されて、蓋体(6)が流路形成部材本体(4)の前面開口部に閉塞状に配置される。その状態で、蓋体(6)の前面側からビス(37)が、ビス挿通部(66)(56)に挿通されて、対応するボス(26)にねじ止め固定される。これにより、蓋体(6)が流路形成部材本体(4)に固定されて、流路形成部材(3)が組み付けられると同時に、その流路形成部材(3)が槽内取付具(2)に固定される。
【0048】
このとき、槽外取付具(1)の内筒体(11)の内部が、流路形成部材(3)の筒体(41)の内部が連通して、第1流路(A)として構成されるとともに、その第1流路(A)が第1開口(51a)を介して第1区画室(5a)に連通されている。更に槽外取付具(1)の内外筒体(11)(12)間が、槽内取付具(2)の筒体(21)及び流路形成部材(4)の筒体(41)間に連通して、第2流路(B)が構成されるとともに、その第2流路(B)が第2開口(51b)を介して第2区画室(5b)に連通されている。
【0049】
また、この組付状態においては、装置本体(10)の前部、すなわち区画室部材(5)及び蓋体(6)が、浴槽内側面よりも内方に突出した状態に配置されている。
【0050】
なお図3に示すように、流路形成部材(3)における区画室部材(5)の後面側外周縁部と、槽内取付具(2)におけるフランジ(35)の外周縁部との間には、平板リング状の合成ゴム製パッキン(85)が介装されて、その間の水密が図られるよう構成されている。
【0051】
また流路形成部材(3)の区画室部材(5)及び蓋体(6)には、その外周面に、フィルター部材取付用の3つの鉤状溝(36)が形成されている。
【0052】
一方、図11ないし図14に示すように、流路形成部材(3)に設けられる弁部材(7a)(7b)は、合成ゴムの一体成形品をもって構成されている。この弁部材(7a)(7b)は、断面略L字型に形成されており、その一片(水平片)が矩形板状の吐出弁(71)として構成されるとともに、他片(垂直片)が矩形板状の吸込弁(72)として構成されている。更に吐出弁(71)及び吸込弁(72)との間の連結部には、略角棒状の弁支持軸(73)が設けられている。
【0053】
吐出弁(71)の上面側には、流路形成部材(3)の第1及び第2吐出弁設置口(53a)(53b)の内周縁部に対応して、リブ(71a)が形成されるとともに、吸込弁(72)の前面側には、蓋体(6)の第1及び第2吸込口(6a)(6b)の内周縁部に対応して、リブ(72a)が形成されている。
【0054】
この弁部材(7)(7)における弁支持軸(73)の前部が、流路形成部材(3)における蓋体裏面の弁取付溝(61a)(61b)に嵌着されるとともに、弁支持軸(73)の両側端部が、流路形成部材(3)における第1及び第2吐出弁設置口(53a)(53b)両側の凹段部(54)(54)に嵌着される(図7参照)。これにより図11に示すように、自然状態においては、弁部材(7a)(7b)の吐出弁(71)(71)が、吐出弁設置口(53a)(53a)を吐出室(5c)側から閉塞するように配置されるとともに、吸込弁(72)(72)が、吸込口(6a)(6b)を区画室(5a)(5b)側から閉塞するように配置される。このとき、吐出弁(71)(71)は、その外周縁部が吐出室(5c)側における吐出弁設置口(53a)(53b)の周縁部(弁座部)に弾性力により密着しており、吐出室(5c)側から区画室(5a)(5b)側に温水が流れ込もうとした際には、その水圧によって、吐出弁(71)(71)の吐出弁設置口(53a)(53b)に対する閉塞状態が維持されて、その方向の温水の流通が規制されるとともに、逆に、区画室(5a)(5b)側から吐出室(5c)側に温水が流れ込もうとした際には、その水圧によって、吐出弁(71)(71)が吐出室(5c)側に弾性変形することにより、吐出弁設置口(53a)(53b)が開放されて、その方向の温水の流通が許容されるよう構成されている。従って弁部材(7a)(7b)の吐出弁(71)(71)は、吐出室(5c)に対し、温水の排出方向の流通は許容し、かつ吸込方向の流通は阻止する逆止弁として機能する。
【0055】
更に弁部材(7a)(7b)の吸込弁(72)(72)は、その外周縁部が区画室(5a)(5b)側における吸込口(6a)(6b)の周縁部(弁座部)に弾性力により密着しており、区画室(5a)(5b)側から外部に温水が流れ出そうとした際には、その水圧によって、吸込弁(72)(72)の吸込口(6a)(6b)に対する閉塞状態が維持されて、その方向の温水の流通が規制されるとともに、逆に、外部から区画室(5a)(5b)側に温水が流れ込もうとした際には、その水圧によって、吸込弁(72)(72)が内側に弾性変形することにより、吸込口(6a)(6b)が開放されて、その方向の温水の流通が許容されるよう構成されている。従って、弁部材(7a)(7b)の吸込弁(72)(72)は、区画室(5a)(5b)に対し、温水の吸込方向の流通は許容し、かつ吐出方向の流通は阻止する逆止弁として機能する。
【0056】
なお、図11ないし図14に示すように、弁部材(7)における弁支持軸(73)の前面側には、嵌合溝(73a)が形成されるとともに、その溝(73a)に対応して蓋体(6)の裏面側には、嵌合突起(63)が形成されており、この嵌合突起(63)が嵌合溝(73a)に嵌着されている。更に弁部材(7a)(7b)における吸込弁(72)の基端部には、嵌合孔(72b)が形成されるとともに、その孔(72b)に対応して、蓋体(6)の裏面側には、嵌合突起(62)が形成されており、この嵌合突起(62)が嵌合孔(72b)に嵌着されている。
【0057】
一方、図1ないし図3、図15に示すように、フィルター部材(9)は、流路形成部材(3)における蓋体(6)の前面から区画室部材(5)の外周側面を覆うように配置されるもので、外装体(91)と、内枠体(92)と、フィルター本体(93)とを備えている。
【0058】
外装体(91)は、装置本体(3)の前面側を覆う円板状の前面カバーと、その前面カバーの周縁部に沿って設けられ、かつ装置本体前部(区画室部材)の外周側面を覆う側面カバーとを有するステンレス等の金属のプレス成形品をもって構成されている。
【0059】
フィルター本体(93)は、略円板形状の金属製メッシュシートからなり、外装体(91)の内部における前面カバー裏面側に配置される。
【0060】
内枠体(92)は、略円板形状を有し、外装体(91)の内部における前面カバーの裏面側にフィルター本体(93)を介して嵌着固定され、これにより、フィルター本体(93)が、外装体(91)と内枠体(92)とに挟持される。
【0061】
また、外装体(91)の前面カバーには、前後に貫通する複数の吸込用開口(95)が放射状に形成されている。
【0062】
更に図2及び図3に示すように外装体(93)の側面カバーには、流路形成部材(3)の吐出口(55)に対応して、吐出用開口(97)が形成されている。
【0063】
また外装体(91)における内周側面には、流路形成部材(3)の外周面に設けられた3つの鉤状溝(36)に対応して、3つの係合突起(96)が内方突出状に形成されている。そして、この係合突起(96)が鉤状溝(36)に挿入係合されることにより、フィルター部材(9)が、流路形成部材(3)に着脱自在に取り付けられている。
【0064】
なお、この取付状態においては、フィルター部材(9)の吐出用開口(97)が、流路形成部材(3)の吐出口(55)に適合して配置される。
【0065】
本実施形態において、配管連結装置(P)の浴槽(T)への組付手順は特に限定されるものではないが、例えば、以下のようにして組み付けられる。
【0066】
まず、浴槽(T)の側壁外面側における取付孔(H)に対応する位置に、槽外取付金具(1)を配置する一方、槽内取付具(2)におけるフランジ(15)の後面側に緩衝部材(84)及びパッキン(83)を配置しておいて、その状態で槽内取付具(2)の筒体(21)を、浴槽(T)の内側から取付孔(H)に挿通して槽外取付具(1)の外筒体(12)にねじ込んで固定する。
【0067】
次に、流路形成部材(3)を槽内取付具(2)に取り付ける。この際、流路形成部材(3)において、上記したように蓋体(6)に弁部材(7a)(7b)をセットしておき、その弁部材付きの蓋体(6)を本体(4)に仮組みしておく。なお、弁部材(7a)(7b)は、搬送時や組付時等における脱落を防止するため、予め蓋体(6)や流路形成部材本体(4)に接着剤等を用いて接着固定しておいても良い。
【0068】
この状態で、流路形成部材(3)をその筒体(41)を槽内取付具(2)の筒体(21)に挿通して、槽外取付具(1)の内筒体(11)の筒孔に適合状態に挿入する。そして、蓋体(6)の前面側からビス(37)を、ビス挿通部(66)(56)に挿通して、ボス(26)にねじ込んで固定する。
【0069】
その後、流路形成部材(3)にフィルター部材(9)を被せて取り付けることにより、配管連結装置(P)の浴槽(T)への組付作業が完了する。
【0070】
こうして浴槽(T)に組み付けられた配管連結装置(P)においては、槽外取付具(1)の外管接続部(1a)(1b)に、室外給湯機からの配管が連結されて、浴槽システムが形成される。
【0071】
この浴槽システムにおいて、浴槽(T)内に温水を供給して貯湯する場合には、2つの外管接続部(1a)(1b)の双方に温水を供給して、2つの流路(A)(B)の両方が浴槽(T)に温水を供給する吐出流路として利用される。すなわち温水が流路(A)(B)を通って、流路形成部材(3)の2つの区画室(5a)(5b)内に流入された際には、その水圧によって、弁部材(7)(7)の吐出弁(71)(71)が開放されて、温水が区画室(5a)(5b)内から吐出室(5c)に流入して合流し、流路形成部材(3)の吐出口(55)及びフィルター開口(97)を通って、浴槽(T)の内部に供給される。
【0072】
なお、この貯湯処理によって、浴槽(T)内の湯面が配管連結装置(P)よりも上方に達したとしても、温水の逆流は防止される。すなわち、温水が流路形成部材(3)の区画室(5a)(5b)を流通する際には、その水圧によって、弁部材(7)(7)の吸込弁(72)(72)は、吸込口(6a)(6b)に密着して閉じられるため、浴槽内の温水が、吸込口(6a)(6b)を流通するのが阻止され、温水の連結装置(P)内への逆流が防止される。
【0073】
一方、浴槽(T)内の温水を再加熱するような追い焚き処理を行う場合には、配管連結装置(P)の2つの流路(A)のうち、室外給湯機の往き管に接続された側の流路が吐出流路として機能し、戻り管に接続された側の流路が吸込流路として機能して、いわゆる強制循環が行われる。例えば第1流路(A)が吐出流路、第2流路(B)が吸込流路となるように配管接続された場合には、給湯機から供給される温水は、第1流路(A)を通って第1区画室(5a)に流入され、吐出弁(71)を開いて、排出室(5c)に流入されて、吐出口(55)及びフィルター開口(97)を介して浴槽(T)内に供給される。
【0074】
また吸込流路においては、室外給湯機の戻り管及び第2流路(B)の負圧に伴い、第2区画室(5b)が負圧となる。このため、浴槽(T)内の水圧によって、流路形成部材(3)における第2吸込口(6b)の吸込弁(72)が開放して、浴槽(T)内の温水がフィルター部材(9)を介して第2吸込口(6b)を通って第2区画室(5b)内に流入されて、更に第2流路(B)を通って室外給湯機に戻される。
【0075】
なお、配管連結装置(P)の2の流路(A)(B)が、室外給湯機の往き管及び戻り管に対し、上記とは逆に接続した場合には、各流路(A)(B)を温水が上記とは逆方向に流通して、強制循環されるものである。
【0076】
こうして浴槽(T)内の温水が循環されて、追い焚き処理が行われる。
【0077】
本実施形態の配管連結装置(P)によれば、槽内取付具(2)のフランジ後面を、緩衝部材(84)及びパッキン(83)を介して浴槽内壁面に密着するに際して、フランジ(25)の後面側に、突条リブ(20)を形成しているため、このリブ(20)によって緩衝部材(84)及びパッキン(83)が押圧変形されて、パッキン(83)とフランジ(25)との間の密着面積が増大するとともに、その間の水分浸入経路が複雑になり、水密性を向上させることができる。その上更に、リブ形成部周辺において、パッキン(83)のフランジ(25)側及び浴槽壁面側に対する密着力が高められ、浴槽壁面及びフランジ(25)間の水密性を一層向上させることができる。
【0078】
また本実施形態においては、突条リブ(20)を2本設けるものであるため、フランジ(25)及び浴槽壁面間におけるシール部分の密着面積を、より一層増大できるとともに、水分浸入経路を、より複雑に形成することができ、より一層水密性を向上させることができる。
【0079】
また本実施形態においては、槽内取付具(2)のフランジ(25)を、緩衝部材(84)を介してパッキン(83)に圧接するものであるため、槽内取付具(2)を槽外取付具(1)にねじ込み固定する際に、パッキン(83)が切り裂かれる等の不具合を確実に防止することができる。
【0080】
なお、上記実施形態においては、槽内取付具のフランジに設けられる突条部(突条リブ)を2本設ける場合について説明したが、本発明において、突条部は1本だけ設けても良いし、3本以上設けるようにしても良い。
【0081】
更に突条部は、周方向に沿って必ずしも連続させる必要はなく、断続的に設けるようにしても良い。
【0082】
また上記実施形態においては、吐出口を1つ設ける場合について説明したが、本発明は、2つ以上の吐出口を有する配管連結装置にも適用することができる。
【0083】
更に上記実施形態においては、本発明を無極性タイプの配管連結装置に適用した場合を例に挙げて説明したが、本発明は、給湯機につながる往き管及び戻り管が予め設定されている配管連結装置にも適用することができる。
【0084】
また上記実施形態においては、フィルター部材の外周側面から温水を吐出するように構成しているが、本発明は、フィルター部材と浴槽内壁面との隙間から温水を吐出するように構成しても良い。
【0085】
更に上記実施形態においては、強制循環タイプの追い焚き可能な装置を例に挙げて説明したが、本発明は、湯はり等の貯湯処理のみを行う配管連結装置にも適用することができる。
【0086】
【発明の効果】
以上のように、本発明の浴槽用配管連結装置によれば、槽内取付具のフランジに突条部を形成し、その突条部付きのフランジを弾性パッキンを介して浴槽内壁面に圧接するものであるため、槽内取付具と浴槽内壁面との間の水密性を向上させることができ、両者間からの水分の浸入を確実に防止することができるという効果がある。
【0087】
また本発明において、槽内取付具のフランジと弾性パッキンとの間に緩衝部材を設ける場合には、フランジの突条部によって弾性パッキンが切り裂かれる等の不具合を有効に防止することができるという利点がある。
【図面の簡単な説明】
【図1】この発明の実施形態である浴槽用配管連結装置を示す断面図である。
【図2】実施形態の配管連結装置を分解して示す断面図である。
【図3】実施形態の配管連結装置を分解して示す斜視図である。
【図4】実施形態の配管連結装置における槽内取付具を裏面側から見た状態で示す斜視図である。
【図5】実施形態の配管連結装置における槽内取付具と浴槽内面との間のシール部を拡大して示す断面図である。
【図6】実施形態の配管連結装置における流路形成部材を分解して示す斜視図である。
【図7】実施形態における流路形成部材の本体を示す正面図である。
【図8】実施形態の流路形成部材本体を示す背面図である。
【図9】実施形態における流路形成部材の蓋体を示す正面図である。
【図10】実施形態の流路形成部材の蓋体を示す背面図である。
【図11】実施形態の配管連結装置における弁部材周辺を拡大して示す断面図である。
【図12】実施形態の配管連結装置における弁部材を示す断面図である。
【図13】実施形態の弁部材を示す正面図である。
【図14】実施形態の弁部材を示す下面図である。
【図15】実施形態の配管連結装置を示す正面図である。
【符号の説明】
1…槽外取付具
2…槽内取付具
20…突条リブ(突条部)
25…フランジ
83…弾性パッキン
84…緩衝部材
H…取付孔
P…浴槽用配管連結装置
T…浴槽
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pipe connecting device for a bathtub that is provided on a bathtub wall and discharges hot water into the bathtub.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a bathtub system in which a bathtub and a water heater are connected by piping to perform hot water storage processing and reheating processing is well known. In this bathtub system, a pipe connecting device is attached in a penetrating manner to the side wall of the bathtub, and this device and an outdoor water heater are connected by piping. When hot water is stored, hot water supplied from the water heater is introduced into the bathtub via the pipe connection device, and when reheating, the hot water in the tank is drawn from the pipe connection device and sent to the water heater, where it is reheated. After that, it returns to the tank.
[0003]
As a pipe connecting device used for such a bathtub system, as shown in Patent Document 1 below, a pipe connecting device having a flanged tubular outer attachment and an inner attachment provided with a flange at one end is well known. It is. In this pipe connecting device, the tank outer fitting is arranged in a state in which the flange extends along the peripheral edge of the mounting hole on the outer surface of the bathtub, and the inner mounting tool presses the flange against the peripheral edge of the mounting hole on the inner surface of the bathtub. It is comprised so that it may be screwed and fixed to the cylinder hole of the fixture outside a tank through the bathtub attachment hole.
[0004]
[Patent Document 1]
JP 2001-65995 (right column of page 3, FIG. 1)
[0005]
[Problems to be solved by the invention]
In the conventional bathtub pipe connecting device, a ring-shaped rubber flat packing is interposed between the flange of the tank fixture and the wall surface of the bathtub, and between the bathtub inner surface and the tank fixture. Water tightness is ensured. However, as it is used for a long period of time, moisture gradually enters from the gap between the rubber packing, the flange, and the inner wall surface of the bathtub, and in some cases, moisture may enter the inside of the coupling device. there were.
[0006]
For this reason, in the past, it has been eagerly desired to further improve the watertightness between the bathtub inner surface and the bathtub pipe coupling device to obtain higher reliability.
[0007]
The present invention has been made in view of the above circumstances, and can further improve the water tightness with the inner surface of the bathtub, and can reliably prevent the ingress of moisture into the apparatus. The purpose is to provide.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is a bathtub pipe coupling device that is assembled in a penetrating state in an attachment hole of a bathtub wall part, and a pipe for supplying hot water into the tank from the outside. A flange is provided on the outer periphery of one end, and the outer tank fixture is disposed in a state where the flange is aligned with the peripheral edge of the mounting hole on the outer surface of the bathtub, and a flange is provided on the outer periphery of the one end, and the flange is provided on the inner surface of the bathtub And an inner tank side of the flange of the in-tank fitting, wherein the flange is fixed to the out-of-tank fitting through the attachment hole. In addition, the gist is provided with protrusions along the circumferential direction.
[0009]
According to the pipe connecting device for a bathtub of the present invention, the protrusion is formed on the flange of the in-tank fitting, and the flange with the protrusion is pressed against the inner surface of the bathtub through the elastic packing. The packing is pressed and deformed by the strip portion, and the adhesion area of the seal portion between the packing and the flange increases, and the moisture intrusion path of the seal portion becomes complicated, and the water tightness of the seal portion can be improved. .
[0010]
In addition, the adhesion of the packing to the flange and the inner surface of the bathtub is increased in the vicinity of the protruding portion, and the watertightness between the inner surface of the bathtub and the flange can be further improved.
[0011]
In this invention, it is preferable to employ | adopt the structure by which the buffer member for preventing the tearing of the said packing by the said rib part is provided between the flange of the said fixture in a tank, and the said elastic packing.
[0012]
In the case of adopting this configuration, it is possible to reliably prevent problems such as the packing being torn. In other words, the in-tank fixture is fixed to the external fixture by screwing or the like, but if the ridges come into direct contact with the packing during this screwing operation, the rubs may cause the packing to be worn out or torn. There is a fear. On the other hand, when the configuration in which the protruding portion is pressed against the packing through the buffer member, the stress on the packing due to the pressing of the protruding portion can be dispersed and absorbed by the buffer member, so the stress is concentrated locally. Can be avoided, and tearing (thread breakage) of the packing can be effectively prevented.
[0013]
Moreover, in this invention, it is desirable to employ | adopt the structure by which the said protrusion part is provided in parallel with multiple item | stripes.
[0014]
That is, when this configuration is adopted, the contact area of the seal portion between the packing and the flange can be further increased, and the moisture intrusion path of the seal portion can be further complicated, and the seal portion It is possible to further improve the water-tightness.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3 are views showing a bathtub pipe coupling device (P) according to an embodiment of the present invention. As shown in these drawings, the pipe coupling device (P) of this embodiment is attached to a mounting hole (H) provided in the side wall of the bathtub (T), and is provided outside the bathtub (T). Hot water supplied from the provided hot water heater can be supplied into the bathtub (T) to perform hot water storage processing such as hot water. Further, the hot water in the bathtub (T) can be sucked and sent to the hot water heater, where it is reheated, and the hot water at the high temperature is returned to the bathtub (T) to perform forced circulation processing such as reheating.
[0016]
In addition, this pipe | tube connection apparatus (P) connects any of the forward pipe and return pipe | tube connected to a water heater with respect to two outer pipe connection parts (1a) (1b) with which this apparatus (P) is equipped. It is a so-called nonpolar type that can be used.
[0017]
As shown in FIGS. 1 to 3, the pipe coupling device (P) of the present embodiment includes basic components including an outside tank fixture (1), a device main body (10), and a filter member (9). The apparatus main body (10) further includes an in-tank fixture (2) and a flow path forming member (3).
[0018]
The outer tank fixture (1) includes a cylindrical outer cylinder (12) having one end (front side) opened and the other end (rear side) closed, and the outer cylinder (12). A cylindrical inner cylinder (11) disposed coaxially inside, a flat ring-shaped flange (15) provided on one end outer periphery of the outer cylinder (12), and an outer cylinder (12) It is comprised with the metal product which has the tubular 1st and 2nd outer pipe | tube connection part (1a) (1b) integrally provided in the other end obstruction | occlusion wall, and extends to the other end side along an axial center direction.
The inner space of the inner cylinder (11) is configured as a part of the first flow path (A), and the space between the inner cylinder (11) and the outer cylinder (12) is a second flow. The first outer pipe connecting portion (1a) is communicated with the first flow path (A), and the second outer pipe connecting portion (1b) is the second flow. It is connected to the road (B).
[0019]
Furthermore, the internal thread (14) is engraved on the inner peripheral surface of the one end side of the outer cylinder (11).
[0020]
Further, an O-ring (81) made of synthetic rubber is accommodated in the front end portion of the inner peripheral surface of the inner cylinder (11).
[0021]
The ring-shaped synthetic rubber covering packing (82) provided on the flange (15) of the outside-mounting fixture (1) has a fitting groove (82a) formed along the inner peripheral surface thereof. And this covering packing (82) is tightly fixed in a state where the outer peripheral surface of the flange (15) is almost entirely covered by fitting the fitting groove (82a) into the flange (15).
[0022]
Further, the front surface side of the covering packing (82) is formed in a thick plate shape and is configured as a packing body (82b), and a plurality of continuous contact in the circumferential direction is provided on the front and back surfaces of the packing body (82b). The projecting rib (82c) is integrally formed.
[0023]
As shown in FIGS. 1 to 4, the in-tank fitting (2) of the apparatus main body (10) has a cylindrical cylinder (21) whose both ends are open and an outer periphery of one end of the cylinder (21). It is constituted by a cylindrical rigid synthetic resin product with a flange made of a polyacetate resin or the like integrally having a flat plate ring-shaped flange (25) provided.
[0024]
The cylindrical body (21) has a male screw (24) engraved on the outer peripheral surface thereof, and the outer cylindrical body (12) in the outside-mounting fixture (1) via the male screw (24) and the female screw (14). ) In the cylindrical hole.
[0025]
Further, a plurality of cylindrical screw receiving bosses (26) are integrally formed at predetermined intervals along the circumferential direction on the front side of the flange (25) (see FIG. 3).
[0026]
Moreover, as shown in FIG.4 and FIG.5, the two rib ribs (20) parallel to each other are integrally formed in the circumferential direction at the rear surface side of the flange (25). Each rib (20) has a mountain-shaped cross section and is tapered on the tip side.
[0027]
The elastic packing (83) interposed between the in-tank fixture (2) and the inner wall of the bathtub (T) is configured with a flat ring-shaped synthetic rubber molded product corresponding to the shape of the flange (25). .
[0028]
Further, the buffer member (84) interposed between the flange (25) and the packing (83) is formed in a flat ring shape corresponding to the shape of the flange (25). This buffer member (84) is formed of a molded product of a soft synthetic resin such as a polyethylene resin having softness or elasticity.
[0029]
And in the state arrange | positioned so that the flange (15) of the said tank outer attachment tool (1) may be along the peripheral part of the attachment hole (H) in the outer wall surface of a bathtub (T), (2) The cylinder (15) of the in-tank fitting (2) is configured such that the flange (15) is pressed against the peripheral edge of the mounting hole (H) on the inner wall surface of the bathtub via the buffer member (84) and the packing (83). (21) is screwed and fixed through the mounting hole (H). As a result, the flanges (15) and (25) of both fixtures (1) and (2) sandwich the peripheral edge of the mounting hole in the bathtub side wall, so that both fixtures (1) and (2) penetrate the bathtub side wall. It is assembled and fixed to.
[0030]
In this assembled state, as shown in FIG. 5, since the rib rib (20) is formed on the rear surface side of the flange (25) in the in-tank fitting (2), the rib (20) The buffer member (84) and the packing (83) are pressed and deformed to increase the contact area of the seal portion between the packing (83) and the flange (25), and the water infiltration path in the seal portion becomes complicated. The water tightness of the seal portion can be improved. Further, in the vicinity of the rib forming portion, the adhesion of the packing (83) to the flange side and the bathtub wall surface side is enhanced, and the water tightness between the bathtub wall surface and the flange (25) can be further improved.
[0031]
Further, when the in-tank fixture (2) is screwed and fixed to the out-of-tank fixture (1), the rib (20) is pressed against the packing (83) via the buffer member (84). Problems such as tearing of the packing (83) can be reliably prevented. That is, when the rib (20) is in direct contact with the packing (83) during the screwing operation of the in-tank fitting (2), the sliding is performed with the rib (20) in contact with the packing (83) at a high pressure. Therefore, the rib (20) may cause the packing (83) to be frayed or torn. On the other hand, in the present embodiment, the rib (20) is pressed against the packing (83) via the buffer member (84), and therefore stress on the packing (83) due to the pressure contact of the rib (20) is applied. Since it can be dispersed and absorbed by the buffer member (84), local concentration of stress can be avoided, and tearing (thread breakage) and the like of the packing (83) can be effectively prevented.
[0032]
As shown in FIGS. 6 to 10, the flow path forming member (3) of the apparatus main body (10) includes a flow path forming member main body (4) and a lid (6).
[0033]
The flow path forming member main body (4) is made of an integrally molded product of hard synthetic resin, and has an elongated cylindrical cylindrical body (41) and a compartment member (5) provided at one end thereof.
[0034]
The cylindrical body (41) is formed in a size that can be inserted into the inner cylindrical body (11) of the above-described tank external fixture (1) in an adapted state.
[0035]
The partition chamber member (5) includes a disc-shaped bottom wall (51) provided at one end of the cylindrical body (41) and an outer peripheral wall provided so as to surround the outer periphery on the front side of the bottom wall (51). (52) are integrated. The compartment member (5) has a radial size that is substantially the same as the flange (25) of the in-tank fixture (2).
[0036]
As shown in FIGS. 6 and 7, the partition chamber member (5) has a plurality of partition walls (53) integrally formed on the front side thereof, and the interior of the partition chamber member (5) has three chambers (5a). ) To (5c). Of these, the first compartment (5a) is formed in a region from the substantially central part to the upper right part of the compartment member (5) as shown in FIG. 7, and the second compartment (5b) is substantially upper left. It is formed in the area of the part. Further, the discharge chamber (5c) is formed in a region extending from the left part of the central part to the diagonally lower right part. In FIG. 7, in order to facilitate understanding of the invention, hatching is applied to a portion where the partition wall (53) is formed.
[0037]
The first and second compartments (5a) (5b) in the compartment member (5) are formed in a non-communication state independently of each other. Further, the first compartment (5a) and the discharge chamber (5c) communicate with each other via the first discharge valve installation port (53a), and the second compartment (5b) and the discharge chamber (5c) are connected to each other. The space is communicated via the second discharge valve installation port (53b).
[0038]
Recessed step portions (54) and (54) for supporting valve members (7a) and (7b) described later are provided on both sides of the discharge valve installation ports (53a) and (53b) in the partition wall (53), respectively. Is formed.
[0039]
The bottom wall (51) in the first compartment (5a) of the compartment member (5) is formed with a first opening (51a) communicating with the inside of the cylindrical body (41). (5a) communicates with the first flow path (A) as described later. Furthermore, the bottom wall (51) in the second compartment (5b) is formed with a second opening (51b) communicating with the outside of the cylinder (51), and the second compartment (5b) is described later. As such, the second flow path (B) is communicated.
[0040]
A discharge port (55) is formed at a position near the lower side of the outer peripheral wall (52) of the partition chamber member (5), and the discharge chamber (5c) is opened to the outside through the discharge port (55). ing.
[0041]
Moreover, as shown in FIG.7 and FIG.8, in the rear surface side outer peripheral part of the bottom wall (51) in a partition chamber member (5), it is in the some boss | hub (26) for screw reception of the said fixture (2) in a tank. Correspondingly, boss receiving recesses (57) capable of accommodating the respective bosses (26) are formed at predetermined intervals in the circumferential direction. Further, three cylindrical screw insertion portions extending in the axial direction corresponding to any three of the boss receiving recesses (57) on the outer peripheral portion on the front surface side of the bottom wall (51) in the compartment member (5) (56) are formed at equal intervals in the circumferential direction.
[0042]
As shown in FIG.9 and FIG.10, the cover body (6) is comprised with the disk-shaped hard synthetic resin molded product corresponding to the front-surface opening part of a compartment member (5).
[0043]
The lid (6) has a rectangular first suction port (6a) as a first suction valve installation port corresponding to the first discharge valve installation port (53a) of the compartment member (5). A rectangular second suction port (6b) as a second suction valve installation port is formed corresponding to the vicinity of the second discharge valve installation port (53b).
[0044]
Further, on the rear surface side of the lid (6), valve mounting grooves (61a) (61b) are formed corresponding to the first and second discharge valve installation ports (53a) (53b).
[0045]
Further, on the back side of the lid (6), three cylindrical screw insertion portions (66) extending along the axial direction corresponding to the three screw insertion portions (56) of the compartment member (5). Are formed respectively.
[0046]
A groove (69) for accommodating the upper end of the partition wall (53) of the partition chamber member (5) and the upper end of the screw insertion portion (56) in a positioning state is formed on the back side of the lid (6). ing.
[0047]
As shown in FIGS. 1 to 3, the lid (6) and the flow path forming member main body (4) are assembled and fixed to the in-tank fixture (2) by three tapping screws (37). . That is, the cylinder (41) of the flow path forming member main body (4) passes through the cylinder (21) of the in-tank fitting (2) and into the cylindrical hole of the inner cylinder (11) of the out-of-tank fitting (1). The boss (26) of the in-tank fitting (2) is inserted into the flow path forming member body (4) and the boss receiving recess (57) while being inserted through the O-ring (81). Thus, the three screw insertion portions (56) of the flow path forming member main body (4) are connected to any three corresponding bosses (26) among the plurality of bosses (26) of the in-tank fixture (2). Be adapted. Furthermore, the screw insertion part (66) of the lid (6) is inserted into the screw insertion part (56) of the flow path forming member main body (4) in an adapted state, and the lid (6) is inserted into the flow path forming member main body ( 4) is arranged in a closed manner in the front opening. In this state, the screw (37) is inserted into the screw insertion portion (66) (56) from the front side of the lid (6), and fixed to the corresponding boss (26) with screws. Thereby, the lid (6) is fixed to the flow path forming member main body (4), and the flow path forming member (3) is assembled. At the same time, the flow path forming member (3) is attached to the in-tank fitting (2 ).
[0048]
At this time, the inside of the inner cylindrical body (11) of the outer tank fixture (1) is connected to the inside of the cylindrical body (41) of the flow path forming member (3) to form the first flow path (A). In addition, the first flow path (A) communicates with the first compartment (5a) through the first opening (51a). Further, the space between the inner and outer cylinders (11) and (12) of the tank outer fitting (1) is between the cylinder (21) of the tank inner fitting (2) and the cylinder (41) of the flow path forming member (4). The second flow path (B) is configured to communicate with the second flow path (B), and the second flow path (B) is communicated with the second compartment (5b) through the second opening (51b).
[0049]
Moreover, in this assembled state, the front part of the apparatus main body (10), that is, the compartment member (5) and the lid (6) are arranged in a state of projecting inward from the inner surface of the bathtub.
[0050]
In addition, as shown in FIG. 3, between the rear surface side outer peripheral edge of the compartment member (5) in the flow path forming member (3) and the outer peripheral edge of the flange (35) in the in-tank fitting (2). Is configured such that a flat ring-shaped synthetic rubber packing (85) is interposed to achieve watertightness therebetween.
[0051]
The partition member (5) and the lid (6) of the flow path forming member (3) are formed with three bowl-shaped grooves (36) for attaching the filter member on the outer peripheral surface thereof.
[0052]
On the other hand, as shown in FIGS. 11 to 14, the valve members (7 a) and (7 b) provided in the flow path forming member (3) are composed of an integrally molded product of synthetic rubber. The valve members (7a) and (7b) are formed in a substantially L-shaped cross section, and one piece (horizontal piece) is configured as a rectangular plate-like discharge valve (71) and the other piece (vertical piece). Is configured as a rectangular plate-like suction valve (72). Furthermore, a substantially square bar-shaped valve support shaft (73) is provided at the connecting portion between the discharge valve (71) and the suction valve (72).
[0053]
On the upper surface side of the discharge valve (71), ribs (71a) are formed corresponding to the inner peripheral edges of the first and second discharge valve installation ports (53a) and (53b) of the flow path forming member (3). In addition, ribs (72a) are formed on the front side of the suction valve (72) corresponding to the inner peripheral edges of the first and second suction ports (6a) and (6b) of the lid (6). Yes.
[0054]
The front part of the valve support shaft (73) in the valve members (7) and (7) is fitted into the valve mounting grooves (61a) and (61b) on the back surface of the lid in the flow path forming member (3), and the valve Both end portions of the support shaft (73) are fitted into the recessed step portions (54) (54) on both sides of the first and second discharge valve installation ports (53a) (53b) in the flow path forming member (3). (See FIG. 7). Thus, as shown in FIG. 11, in the natural state, the discharge valves (71) (71) of the valve members (7a) (7b) connect the discharge valve installation ports (53a) (53a) to the discharge chamber (5c) side. The suction valves (72) and (72) are disposed so as to block the suction ports (6a) and (6b) from the compartments (5a) and (5b) side. At this time, the outer peripheral edge of the discharge valve (71) (71) is in close contact with the peripheral edge (valve seat) of the discharge valve installation port (53a) (53b) on the discharge chamber (5c) side by elastic force. When hot water is about to flow from the discharge chamber (5c) side to the compartment (5a) (5b) side, the discharge valve installation port (53a) of the discharge valves (71) (71) is caused by the water pressure. (53b) is maintained closed and the flow of warm water in that direction is restricted, and conversely, warm water tends to flow from the compartments (5a) (5b) to the discharge chamber (5c). At that time, the discharge valve (71) (71) is elastically deformed toward the discharge chamber (5c) by the water pressure, so that the discharge valve installation port (53a) (53b) is opened and the hot water in that direction is opened. It is configured to allow distribution. Therefore, the discharge valves (71) and (71) of the valve members (7a) and (7b) are non-return valves that allow the hot water to flow in the discharge direction and prevent the flow in the suction direction from the discharge chamber (5c). Function.
[0055]
Further, the suction valve (72) (72) of the valve member (7a) (7b) has a peripheral edge portion (valve seat portion) of the suction port (6a) (6b) at the outer peripheral edge portion on the compartment (5a) (5b) side. ) By elastic force, and when hot water is about to flow out from the compartments (5a) and (5b) side, the water pressure causes the suction port (6a) of the suction valves (72) and (72). (6b) is maintained closed, the flow of warm water in that direction is restricted, and conversely, when warm water tries to flow into the compartment (5a) (5b) side from the outside, The suction valves (72) and (72) are elastically deformed inward by the water pressure, so that the suction ports (6a) and (6b) are opened, and the hot water in that direction is allowed to flow. Therefore, the suction valves (72) and (72) of the valve members (7a) and (7b) allow the warm water in the suction direction and block the flow in the discharge direction with respect to the compartments (5a) and (5b). Functions as a check valve.
[0056]
As shown in FIGS. 11 to 14, a fitting groove (73a) is formed on the front surface side of the valve support shaft (73) in the valve member (7) and corresponds to the groove (73a). A fitting projection (63) is formed on the back side of the lid (6), and the fitting projection (63) is fitted in the fitting groove (73a). Furthermore, a fitting hole (72b) is formed at the base end of the suction valve (72) in the valve member (7a) (7b), and the lid (6) of the lid (6) corresponds to the hole (72b). A fitting projection (62) is formed on the back surface side, and the fitting projection (62) is fitted into the fitting hole (72b).
[0057]
On the other hand, as shown in FIGS. 1 to 3 and 15, the filter member (9) covers the outer peripheral side surface of the compartment member (5) from the front surface of the lid (6) in the flow path forming member (3). It is provided with an exterior body (91), an inner frame body (92), and a filter body (93).
[0058]
The exterior body (91) is provided along a disc-shaped front cover that covers the front side of the apparatus main body (3), and a peripheral edge of the front cover, and an outer peripheral side surface of the front part of the apparatus main body (partition chamber member) And a press-molded product made of metal such as stainless steel having a side cover for covering.
[0059]
The filter body (93) is made of a substantially disc-shaped metal mesh sheet, and is arranged on the back surface side of the front cover inside the exterior body (91).
[0060]
The inner frame body (92) has a substantially disc shape, and is fitted and fixed to the back surface side of the front cover inside the exterior body (91) via the filter body (93), whereby the filter body (93 ) Is sandwiched between the exterior body (91) and the inner frame body (92).
[0061]
The front cover of the exterior body (91) is formed with a plurality of suction openings (95) penetrating in the front-rear direction.
[0062]
Further, as shown in FIGS. 2 and 3, the side cover of the exterior body (93) is formed with a discharge opening (97) corresponding to the discharge port (55) of the flow path forming member (3). .
[0063]
Further, on the inner peripheral side surface of the exterior body (91), there are three engagement protrusions (96) corresponding to the three flanged grooves (36) provided on the outer peripheral surface of the flow path forming member (3). It is formed in a protruding direction. The engaging protrusion (96) is inserted and engaged with the bowl-shaped groove (36), so that the filter member (9) is detachably attached to the flow path forming member (3).
[0064]
In this attached state, the discharge opening (97) of the filter member (9) is disposed in conformity with the discharge port (55) of the flow path forming member (3).
[0065]
In the present embodiment, the procedure for assembling the pipe connecting device (P) to the bathtub (T) is not particularly limited, but for example, it is assembled as follows.
[0066]
First, the tank external fitting (1) is disposed at a position corresponding to the mounting hole (H) on the side wall outer surface side of the bathtub (T), while the flange (15) in the tank internal fitting (2) is disposed on the rear surface side. The buffer member (84) and the packing (83) are arranged, and in this state, the cylindrical body (21) of the in-tank fitting (2) is inserted into the mounting hole (H) from the inside of the bathtub (T). Then, it is screwed and fixed to the outer cylinder (12) of the tank outer fixture (1).
[0067]
Next, the flow path forming member (3) is attached to the in-tank fixture (2). At this time, in the flow path forming member (3), the valve members (7a) and (7b) are set on the lid (6) as described above, and the lid (6) with the valve member is attached to the main body (4). ) Temporarily assembled. The valve members (7a) and (7b) are bonded and fixed in advance to the lid (6) and the flow path forming member main body (4) in order to prevent the valve members (7a) and (7b) from falling off during transport or assembly. You can keep it.
[0068]
In this state, the flow path forming member (3) is inserted into the cylinder (21) of the in-tank fitting (2) through the cylinder (41), and the inner cylinder (11) of the out-of-tank attachment (1) is inserted. ) To fit into the cylindrical hole. Then, the screw (37) is inserted into the screw insertion portion (66) (56) from the front side of the lid (6), and screwed into the boss (26) to be fixed.
[0069]
Then, the assembly work to the bathtub (T) of the pipe connection device (P) is completed by covering the flow path forming member (3) with the filter member (9).
[0070]
In the pipe connecting device (P) thus assembled to the bathtub (T), the pipe from the outdoor water heater is connected to the outer pipe connecting portions (1a) and (1b) of the external fixture (1). A system is formed.
[0071]
In this bathtub system, when hot water is supplied into the bathtub (T) to store hot water, the hot water is supplied to both of the two outer pipe connecting portions (1a) and (1b), and the two flow paths (A). Both (B) are used as discharge channels for supplying hot water to the bathtub (T). That is, when warm water flows into the two compartments (5a) and (5b) of the flow path forming member (3) through the flow paths (A) and (B), the valve member (7 The discharge valves (71) and (71) of (7) are opened, and hot water flows into the discharge chamber (5c) from the compartments (5a) and (5b) and joins, and the flow path forming member (3) The product is supplied to the inside of the bathtub (T) through the discharge port (55) and the filter opening (97).
[0072]
In addition, even if the hot_water | molten_metal surface in a bathtub (T) reaches upwards rather than the piping connection apparatus (P) by this hot water storage process, the backflow of warm water is prevented. That is, when the warm water flows through the compartments (5a) and (5b) of the flow path forming member (3), the suction valves (72) and (72) of the valve members (7) and (7) Since it closes in close contact with the suction ports (6a) and (6b), the hot water in the bathtub is prevented from flowing through the suction ports (6a) and (6b), and the backflow into the coupling device (P) of the hot water is prevented. Is prevented.
[0073]
On the other hand, when performing a reheating process such as reheating the hot water in the bathtub (T), it is connected to the forward pipe of the outdoor water heater among the two flow paths (A) of the pipe coupling device (P). The flow path on the other side functions as a discharge flow path, and the flow path on the side connected to the return pipe functions as a suction flow path, so-called forced circulation is performed. For example, when the pipes are connected so that the first flow path (A) is a discharge flow path and the second flow path (B) is a suction flow path, the hot water supplied from the water heater is the first flow path ( A) flows into the first compartment (5a), opens the discharge valve (71), flows into the discharge chamber (5c), and passes through the discharge port (55) and the filter opening (97). (T) is supplied.
[0074]
Further, in the suction channel, the second compartment (5b) becomes negative pressure due to the negative pressure of the return pipe of the outdoor water heater and the second flow channel (B). For this reason, the suction valve (72) of the second suction port (6b) in the flow path forming member (3) is opened by the water pressure in the bathtub (T), and the hot water in the bathtub (T) is filtered by the filter member (9). ) Through the second suction port (6b) and into the second compartment (5b), and then returned to the outdoor water heater through the second channel (B).
[0075]
In addition, when the two flow paths (A) and (B) of the pipe connecting device (P) are connected to the forward pipe and the return pipe of the outdoor water heater in the reverse manner, the flow paths (A) In (B), hot water is circulated in the opposite direction to that described above and forcedly circulated.
[0076]
In this way, the hot water in the bathtub (T) is circulated, and the reheating process is performed.
[0077]
According to the pipe coupling device (P) of the present embodiment, when the rear surface of the flange of the in-tank fitting (2) is brought into close contact with the inner wall surface of the bathtub via the buffer member (84) and the packing (83), the flange (25 ) Is formed on the rear surface side, the buffer member (84) and the packing (83) are pressed and deformed by the rib (20), and the packing (83) and the flange (25) are formed. The adhesion area between them increases and the water intrusion path between them becomes complicated, and the water tightness can be improved. Furthermore, in the vicinity of the rib forming portion, the adhesion of the packing (83) to the flange (25) side and the bathtub wall surface side is enhanced, and the water tightness between the bathtub wall surface and the flange (25) can be further improved.
[0078]
Moreover, in this embodiment, since two rib ribs (20) are provided, the contact area of the seal portion between the flange (25) and the bathtub wall surface can be further increased, and the moisture intrusion path can be further increased. It can be formed in a complicated manner, and water tightness can be further improved.
[0079]
In this embodiment, since the flange (25) of the in-tank fitting (2) is pressed against the packing (83) via the buffer member (84), the in-tank fitting (2) is placed in the tank. When screwing and fixing to the outer fixture (1), it is possible to reliably prevent problems such as the packing (83) being torn.
[0080]
In addition, in the said embodiment, although the case where two protrusion parts (protrusion rib) provided in the flange of a tank fixture was demonstrated, in this invention, you may provide only one protrusion part. Three or more may be provided.
[0081]
Furthermore, the protrusions are not necessarily continuous along the circumferential direction, and may be provided intermittently.
[0082]
Moreover, in the said embodiment, although the case where one discharge port was provided was demonstrated, this invention is applicable also to the piping connection apparatus which has two or more discharge ports.
[0083]
Further, in the above embodiment, the case where the present invention is applied to a non-polar type pipe coupling device has been described as an example. However, the present invention is a pipe in which an outgoing pipe and a return pipe connected to a water heater are set in advance. It can also be applied to a coupling device.
[0084]
Moreover, in the said embodiment, although comprised so that hot water may be discharged from the outer peripheral side surface of a filter member, you may comprise this invention so that warm water may be discharged from the clearance gap between a filter member and a bathtub inner wall surface. .
[0085]
Furthermore, in the above-described embodiment, the description has been given by taking an example of a forced circulation type replenishable device, but the present invention can also be applied to a pipe connecting device that performs only hot water storage processing such as hot water.
[0086]
【The invention's effect】
As described above, according to the pipe connecting device for bathtubs of the present invention, a protrusion is formed on the flange of the in-tank fitting, and the flange with the protrusion is pressed against the inner wall of the bathtub via the elastic packing. Therefore, it is possible to improve the water-tightness between the tank fixture and the inner wall surface of the bathtub, and to reliably prevent moisture from entering between the two.
[0087]
Moreover, in this invention, when providing a buffer member between the flange of a tank fixture and an elastic packing, the advantage that malfunctions, such as an elastic packing being torn by the rib part of a flange, can be prevented effectively. There is.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a bathtub pipe coupling device according to an embodiment of the present invention.
FIG. 2 is an exploded cross-sectional view of the pipe connecting device according to the embodiment.
FIG. 3 is an exploded perspective view showing the pipe connecting device according to the embodiment.
FIG. 4 is a perspective view showing the in-tank fixture in the pipe coupling device of the embodiment as seen from the back side.
FIG. 5 is an enlarged cross-sectional view showing a seal portion between the in-tank fixture and the inner surface of the bathtub in the pipe coupling device of the embodiment.
FIG. 6 is an exploded perspective view showing a flow path forming member in the pipe connecting device of the embodiment.
FIG. 7 is a front view showing the main body of the flow path forming member in the embodiment.
FIG. 8 is a rear view showing the flow path forming member main body of the embodiment.
FIG. 9 is a front view showing a lid of the flow path forming member in the embodiment.
FIG. 10 is a rear view showing a lid of the flow path forming member of the embodiment.
FIG. 11 is an enlarged cross-sectional view of the periphery of the valve member in the pipe connecting device according to the embodiment.
FIG. 12 is a cross-sectional view showing a valve member in the pipe connecting device of the embodiment.
FIG. 13 is a front view showing the valve member of the embodiment.
FIG. 14 is a bottom view showing the valve member of the embodiment.
FIG. 15 is a front view showing the pipe connecting device of the embodiment.
[Explanation of symbols]
1 ... Attachment outside the tank
2 ... In-tank fixture
20 ... ridge rib (ridge portion)
25 ... Flange
83 ... Elastic packing
84 ... Buffer member
H ... Mounting hole
P ... Pipe connection device for bathtub
T ... bathtub

Claims (2)

浴槽壁部の取付孔に貫通状態に組み付けられるとともに、外部から槽内に温水を供給するための配管が連結される浴槽用配管連結装置であって、
一端外周にフランジが設けられ、そのフランジを浴槽外面における取付孔の周縁部に沿わせた状態に配置される槽外取付具と、
一端外周にフランジが設けられ、そのフランジを浴槽内面における取付孔の周縁部に弾性パッキンを介して圧接させる態様に、取付孔を通じて前記槽外取付具に固定される鍔付き筒状の槽内取付具とを備え、
前記槽内取付具のフランジにおける浴槽内面側に、周方向に沿って突条部が設けられ
前記槽内取付具のフランジと前記弾性パッキンとの間に、前記突条部による前記パッキンの切り裂きを防止するための緩衝部材が設けられてなることを特徴とする浴槽用配管連結装置。
A bathtub connecting device that is assembled in a penetrating state in a mounting hole of a bathtub wall portion and connected to a pipe for supplying hot water from the outside into the tank,
A flange is provided on the outer periphery of the one end, and the outer tank fixture is arranged in a state in which the flange extends along the peripheral edge of the mounting hole on the outer surface of the bathtub,
A flanged tube is installed on the outer periphery of the one end, and the flange is fixed to the external fixture through the mounting hole in a manner in which the flange is pressed against the peripheral edge of the mounting hole on the inner surface of the bathtub via an elastic packing. With tools,
A ridge is provided along the circumferential direction on the inner surface of the bathtub in the flange of the in-tank fixture ,
A pipe connecting device for a bathtub , wherein a buffer member is provided between the flange of the in-tank fixture and the elastic packing to prevent the packing from being torn by the protrusion .
前記突条部が複数条並列に設けられてなる請求項1記載の浴槽用配管連結装置。The bathtub connecting device according to claim 1, wherein a plurality of the protrusions are provided in parallel .
JP2003112081A 2003-04-16 2003-04-16 Pipe connection device for bathtub Expired - Lifetime JP3978405B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015230106A (en) * 2014-06-03 2015-12-21 株式会社ガスター Additional boiling circulation metal fitting and bath device connected to bath tub through additional boiling circulation metal fitting

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4629595B2 (en) * 2006-02-28 2011-02-09 株式会社ハタノ製作所 Bathtub adapter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015230106A (en) * 2014-06-03 2015-12-21 株式会社ガスター Additional boiling circulation metal fitting and bath device connected to bath tub through additional boiling circulation metal fitting

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