JP4368049B2

JP4368049B2 - Hot and cold mixer tap

Info

Publication number: JP4368049B2
Application number: JP2000286350A
Authority: JP
Inventors: 功根岸
Original assignee: Nippon Thermostat Co Ltd
Current assignee: Nippon Thermostat Co Ltd
Priority date: 2000-09-21
Filing date: 2000-09-21
Publication date: 2009-11-18
Anticipated expiration: 2020-09-21
Also published as: JP2002098243A

Description

【０００１】
【発明が属する技術分野】
本発明は、湯と水とを混合して吐出する湯水混合栓のうちで、ワックスサーモエレメントのかわりに温度により力が変わる感温ばねを用いて、混合弁を自動調整させるようにした形態の湯水混合栓についての改良に関する。
【０００２】
【従来の技術】
上述の感温ばねを用いる形態の湯水混合栓Ａは、従前のものにあっては、弁箱本体と一体に連続させて形成される筒状のケース、または、図１にあるように、筒状に形成して弁箱本体ａに対しカートリッジ状に挿抜自在に嵌装して組み付けるケース１の周壁に、湯流入口１０と水流入口１１とを、それらのうちの湯流入口１０がケース１の軸方向の一端側（図１において左端側）に寄り、水流入口１１が内側（右側）に寄るように軸方向に並列させて開設し、これらの内面側には、図２にあるように、湯弁座１２と水弁座１３とをそれぞれ装設しておき、ケース１の内腔には、これら湯弁座１２と水弁座１３との間を自在に動くように筒弁状に形成した制御弁体２を嵌装して、それの筒壁の軸方向の端面にそれぞれ形成した湯弁２ａと水弁２ｂとを前記湯弁座１２と水弁座１３とにそれぞれ対向させる。
【０００３】
この制御弁体２を、それに対し、軸方向の一端側（図２において左端側）から突き当てるバイアスばね３と他端側から突き当てる感温ばね４との二つのばねを連繋して、それらばね３・４により挟持させる。それらばね３・４のうちのバイアスばね３にあっては、制御弁体２と反対側の端部を、ケース１の軸方向の一端側に装設せる温度調整ダイヤルＤ１により回動する調整ねじ軸５によってケース１内を軸方向に摺動するスライドブロック５０に突き当てて支承させ、感温ばね４にあっては、制御弁体２と反対側の端部を、ケース１の筒壁に一体または一体的に連結して装設しておくばね受け１４に支承させて、この制御弁体２を一対に対向するバイアスばね３と感温ばね４との二つのばねのバランスされた位置に保持させておく。
【０００４】
そして、これにより、温度調整ダイアルＤ１の回動操作でスライドブロック５０を所望の設定温度位置に動かしてその位置に保定した状態で、ケース１の他端側に組付けておく切換ダイヤルＤ２の回転操作により、ケース１内に嵌装した筒状の切換弁体６を回動させて、ケース１’の周壁に設けた流出ポートＰ１・Ｐ２と切換弁体６の筒壁に設けた連通口６０・６１とを整合させて、混合室ｂを吐水管側またはホース側に対し連通させることで、湯流入口１０から湯弁座１２と湯弁２ａとの間隔により制御された流量で混合室ｂに流入する湯と水流入口１１から水弁座１３と水弁２ｂとの間隔により制御された流量をもって混合室ｂ内に流入する水とが混合して、混合水となって混合水流路ｃを経て吐水管側またはホース側に流出していくようになる。
【０００５】
このとき、混合室ｂ内における混合水の温度が設定した温度より低いときは、感温ばね４が流過する混合水の温度変化に応じてばね定数を変化させて収縮する側に変形することでバイアスばね３側の荷重の方が大きくなることにより、制御弁体２が図２において右側に移動して、湯弁座１２と湯弁２ａとの間隔を拡げて湯の流入量を多くし、同時に水弁座１３と水弁２ｂとの間隔を狭めて水の流入量を少なくして、混合水の温度を上げ、その温度を設定値に戻すようになる。
【０００６】
また、混合室ｂを流過する混合水の温度が設定値よりも高くなると、感温ばね４が膨張変形して、それの付勢がバイアスばね３のばね荷重よりも大きくなることで、制御弁体２を図２において左側に動かし、湯弁座１２と湯弁２ａとの間の開度を狭めて湯の流入量を小さくし、同時に水弁座１３と水弁２ｂとの間の開度を拡げて水の流入量を多くして、混合水の温度を下げるようになり、これにより、吐水管側またはホース側から取り出す混合水の温度を設定温度に保持するようにしてある。
【０００７】
【発明が解決しようとする課題】
上述のワックスサーモエレメントは用いないで、これにかえて、形状記憶合金製の感温ばね４を用いる形態の湯水混合栓Ａは、ケース１内にそのケース１の軸方向に可動に設ける制御弁体２を、それの前記軸方向の一方の側からバイアスばね３を突き当て、他方の側から感温ばね４を突き当てて、それら二つのばねに制御弁体２を挟持させて、それら二つのばねの対向するばね荷重がバランスしてくる位置に制御弁体２を保持させておき、一方のばねである感温ばね４が、温度変化に応じてばね定数を変化させることにより、この二つのばねのバランス位置を軸方向に変動させることで、制御弁体２に温度に応じた制御作動を行なわせることから、ケース内にバイアスばね３と感温ばね４とが、制御弁体２を挟んで軸方向に並列することになることから、ケース１の軸方向の寸法が長くなる問題がある。
【０００８】
また、バイアスばね３を、温度調製ダイヤルＤ１の回動により軸方向に変位するスライドブロック５０の作動に対応させて、軸方向の長さが変動するようにすることから、図３にあるように、一対に対向する座板３０・３１の間に、ガイド金具３２を介し軸方向に伸縮するように渡架装着して組立て、これを、前記スライドブロック５０と制御弁体２と制御弁体との間に組込むようにすることで、このバイアスばね３の組立て、組付けが面倒な問題がある。
【０００９】
また、湯流入口１０から流入してくる湯が、このバイアスばね３のコイル状に巻かれた内腔に流れ込み、そこを流路として混合室ｂに流れていくようにしていることから、バイアスばね３が軸方向に押し縮められてコイル巻き目の間隔が詰まった状態時にも、その巻き目の間隔を流過する湯の流量に変化を生ぜしめないように、バイアスばね３を軸方向に長いコイル状に成形しておくか、または、図３にあるように、バイアスばね３の一対の座板３０・３１のうちの、制御弁体２側に位置する座板３１に、制御弁体２側に延出する脚柱を設けてその脚柱の間隔を連通口とするか、この座板３１に筒状部を設けてそれの筒壁に連通口３３…を開設しておいて、湯流入口１０から流入してくる湯の一部が、バイアスばね３の巻き目の間隔を流過してケース１内の中心部位に流入するようにしておく外に、この別の連通口３３…を流過してケース１内の軸心部位を混合室ｂ側に流れるようにしておくことが必要であり、このため、バイアスばね３の軸方向の長さを長くし、湯水混合栓Ａの全体の軸方向の寸法を短くするのを困難にしている問題がある。
【００１０】
また、湯流入口１０から流入する湯をケース１内の軸心部位に導いて、その部位から混合室ｂの軸心部位に流入させ、それの外周側に水流入口１１から流入する水を合流させて混合させることで、混合水とするようにしていることから、湯と水との混りが悪い問題がある。
【００１１】
さらに、感温ばねの応答性が良いことから湯と水の混合ムラによる温度変化にも応答することで、制御弁体が振動してハンチング現象を起こし易い問題がある。
【００１２】
本発明は、従前の形状記憶合金製の感温ばねを用いた湯水混合栓に生じているこれらの問題を解消するためになされたものであって、この湯水混合栓を、長さ方向の寸法を長くすることなく小型化し得るようにし、しかも、バイアスばねの組付けを容易にし、また、湯と水との混じりを良くし、また、制御弁体の制御作動がハンチング現象を起こさずに円滑に行なわれるようにする新たな手段を提供することを目的とする。
【００１３】
【課題を解決するための手段】
そして、本発明においては、上述の目的を達成するための手段として、筒状に形成した弁箱本体となるボディまたはそのボディ内にカートリッジ状に装着する筒状のケース１の周壁に、湯流入口１０と水流入口１１とを軸方向に並列させて設け、それらの内面側に湯弁座１２と水弁座１３とをそれらが軸方向において互いに向き合うように設け、ボディまたはケース１内には、前記湯弁座１２と水弁座１３とにそれぞれ対向する湯弁２ａと水弁２ｂとを軸方向の両端に具備する筒状の制御弁体２を軸方向に移動可能に配置し、その制御弁体２に水弁座１３側から湯弁座１２側に付勢する感温ばね４と湯弁座１２側から水弁座１３側に付勢するバイアスばね３とを連繋して、それらばね３・４の均り合いにより制御弁体２を移動可能に支持せしめ、感温ばね４またはバイアスばね３の力の変化により混合水温度を制御する湯水混合栓において、ボディまたはケースに設けた水流入口１１には、その水流入口１１の内面側に形成した水弁座１３に、径方向に略平行して内側に向かう平行部１３０とその平行部１３０の内端から混合室ｂ側に傾斜して内側に向かうテーパー部１３１を設け、制御弁体２には、それの水弁２ｂに、前記水弁座１３に設けた平行部１３０と対向する平行部２０と水弁座１３のテーパー部１３１と対向するテーパー部２１を装設し、この水弁座１３のテーパー部１３１と水弁２ｂのテーパー部２１とにより水流入口１１から流入する水を混合室ｂ側に向かわせる流路ｗを形成し、前記制御弁体２には、それの中心部位に流れを塞ぐばね座２２を設けそのばね座２２の外周で前記流路ｗよりも下流の位置に、上流側に向かう側がテーパー若しくはアール状（弧状）のリング２３を外周側に突起するように設けることを特徴とする湯水混合栓を提起するものである。
【００１４】
また、これに併せて、上述の湯水混合栓において、制御弁体２の内腔で水弁２ｂ側の中心部位に、ボディまたはケース１内の制御弁体２よりも下流側の混合室ｂ内に収蔵した感温ばね４の一端側を懸架するばね座２２をその制御弁体２の内腔の中心部位を塞ぐ状態に設け、制御弁体２から混合室ｂに向けて流れる湯と水の流路ｖを、ケース１の内壁と前記ばね座２２の外周側との間に形成し、混合室ｂの下流側の端部には中心部位に感温ばね４の他端側を懸架するばね支持金具８を、混合室ｂの中心部位を塞ぐ状態で設け、そのばね支持金具８の外周側に、混合水の流路ｙを形成して、混合室ｂ内を流過する混合水の主な流路を感温ばね４の外周側としたことを特徴とする湯水混合栓。
【００１５】
および、上述の湯水混合栓において、制御弁体２の内腔で水弁２ｂ側の中心部位に、ボディまたはケース１内の制御弁体２よりも下流側の混合室ｂ内に収蔵した感温ばね４の一端側を懸架するばね座２２をその制御弁体２の内腔の中心部位を塞ぐ状態に設け、制御弁体２から混合室ｂに向けて流れる湯と水の流路ｖをケース１の内壁と前記ばね座２２の外周側との間に形成し、混合室ｂの下流側の端部には中心部位に感温ばね４の他端側を懸架するばね支持金具８を、混合室ｂの中心部位を塞ぐ状態で設け、そのばね支持金具８の外周側に、混合水の流路ｙを形成し、混合室ｂの中心部位には、感温ばね４の内腔に位置する円筒状体または円柱状体８０を、前記ばね座２２またはばね支持金具８またはそれらの両方から突出するように装設し、混合室ｂ内を流過する混合水の主な流路を感温ばね４の外周側としたことを特徴とする湯水混合栓。
【００１７】
および、上記湯水混合栓において、制御弁体２の内腔で水弁２ｂ側の中心部位に、ボディまたはケース１内の制御弁体２よりも下流側に形成した混合室ｂ内に収蔵した感温ばね４の一端側を懸架するばね座２２をその制御弁体２の内腔の中心部位を塞ぐ状態に設け、制御弁体２から混合室ｂに向けて流れる湯と水の流路ｖをケース１の内壁と前記ばね座２２の外周側との間に形成し、混合室ｂの下流側の端部には中心部位に感温ばね４の他端側を懸架するばね支持金具８を、混合室ｂの中心部位を塞ぐ状態で設け、そのばね支持金具８の外周側に、混合水の流路ｙを形成したことを特徴とする湯水混合栓。
【００１９】
および、上記湯水混合栓において、ボディまたはケースに設けた水流入口１１には、その水流入口１１の内面側に形成した水弁座１３に、径方向に略平行して内側に向かう平行部１３０とその平行部１３０の内端から混合室ｂ側に傾斜して内側に向かうテーパー部１３１を設け、制御弁体２には、それの水弁２ｂに、前記水弁座１３に設けた平行部１３０と対向する平行部２０と水弁座１３のテーパー部１３１と対向するテーパー部２１を装設し、この水弁座１３のテーパー部１３１と水弁２ｂのテーパー部２１とにより水流入口１１から流入する水を混合室ｂ側に向かわせる流路ｗを形成し、前記制御弁体２には、それの中心部位に、湯弁座１２側に開放する穴７を軸方向に沿わせて形成し、その穴７の内腔にバイアスばね３を挿入して内端側をその穴７の底部に支持させ、そのバイアスばね３の外端側を、前記穴７に湯弁座１２側から出入自在に挿入したばね受け軸７０に支持させ、そのばね受軸７０を制御弁体２に固定して設ける押さえ金具７１により穴７よりの脱出を阻止せしめて、このバイアスばね３を制御弁体２の内腔に収納したことを特徴とする湯水混合栓。
【００２０】
および、上記湯水混合栓において、ボディまたはケースに設けた水流入口１１には、その水流入口１１の内面側に形成した水弁座１３に、径方向に略平行して内側に向かう平行部１３０とその平行部１３０の内端から混合室ｂ側に傾斜して内側に向かうテーパー部１３１を設け、制御弁体２には、それの水弁２ｂに、前記水弁座１３に設けた平行部１３０と対向する平行部２０と水弁座１３のテーパー部１３１と対向するテーパー部２１を装設し、この水弁座１３のテーパー部１３１と水弁２ｂのテーパー部２１とにより水流入口１１から流入する水を混合室ｂ側に向かわせる流路ｗを形成し、前記制御弁体２には、それの中心部位に湯弁座１２側に開放する軸方向に沿う穴７を形成し、その穴７の内腔にバイアスばね３を挿入してそれの内端側を穴７の底部に支持せしめ外端側を穴７内に出入自在に挿入して押さえ金具７１により穴７からの脱出を阻止したばね受軸７０に支承してバイアスばね３を穴７内に収納し、その穴７の周壁の外周側で、湯弁２ａおよび水弁２ｂの内側となる部位に、湯弁２ａを流過した湯を導く流路ｕを形成したことを特徴とする湯水混合栓。
【００２１】
ならびに、上記湯水混合栓において、ボディまたはケースに設けた水流入口１１には、その水流入口１１の内面側に形成した水弁座１３に、径方向に略平行して内側に向かう平行部１３０とその平行部１３０の内端から混合室ｂ側に傾斜して内側に向かうテーパー部１３１を設け、制御弁体２には、それの水弁２ｂに、前記水弁座１３に設けた平行部１３０と対向する平行部２０と水弁座１３のテーパー部１３１と対向するテーパー部２１を装設し、この水弁座１３のテーパー部１３１と水弁２ｂのテーパー部２１とにより水流入口１１から流入する水を混合室ｂ側に向かわせる流路ｗを形成し、制御弁体２には、それの湯弁２ａを設けた側に、軸方向視において放射状に並列する複数の案内羽根２ｃを、湯弁２ａから水弁２ｂと反対側に突出するように延出させて設け、それら案内羽根２ｃの外周面を、ボディまたはケース１の内壁面の、湯弁座１２から水弁座１３と反対側に越した部位に摺接させて、制御弁体２のガイドとしたことを特徴とする湯水混合栓を提起するものである。
【００２２】
【発明の実施の形態】
本発明による湯水混合栓Ａは、弁箱本体となるボディａまたはそれの内腔にカートリッジ状に装入して組付ける筒状のケース１の周壁に、図４にあるように湯流入口１０と水流入口１１とを軸方向に並列させて開設し、それらの各内側部位に、湯弁座１２と水弁座１３とを、それらが軸方向において互いに対向するように形設しておき、ケース１内には、筒弁状に形成した制御弁体２を、それの軸方向の両端部に湯弁２ａと水弁２ｂとを形成している筒状の弁部２’が、この湯弁座１２と水弁座１３との間を軸方向に自在に動くように嵌装する。
【００２３】
この制御弁体２に、湯弁座１２の側から水弁座１３側に押し出すよう付勢するバイアスばね３と、水弁座１３側から湯弁座１２側に押し出すよう付勢する感温ばね４とを連繋し、これらばね３・４のうちのバイアスばね３にあっては、それの制御弁体２に連繋する側と反対側を、ケース１の一方の軸端側（図４において左端側）に設ける温度調整ダイヤルＤ１の操作により回転する調整ねじ軸５によってケース１を軸方向に移動するスライドブロック５０に対し連繋してそれに支持せしめ、他方の感温ばね４にあっては、ケース１内の制御弁体２の下流側に形成する混合室ｂ内において、制御弁体２に対し連繋する側と反対側を、ケース１内に位置を固定して設けるばね支持金具８に支持せしめ、これにより、制御弁体２をバイアスばね３と感温ばね４との対向する二つのばね３・４に挟持させて、これら二つのばねの対向するばね荷重がバランスしてくる位置に制御弁体２を保持させ、一方のばねである感温ばね４が、温度変化に応じてばね定数を変化させることにより二つのばねのバランス位置を軸方向に変動させることで、制御弁体２に混合室ｂ内を流過する混合水の温度に応じた制御作動を行なわせるようにすることについては、従前の記憶合金製の感温ばねを用いる湯水混合栓と同様に構成してよい。
【００２４】
しかし、制御弁体２に一端側を連繋させるバイアスばね３は、制御弁体２の中心部位に、湯弁座１２側に開放する穴７を形成して、この穴７内にバイアスばね３を挿入し、それの内端側を穴７の底部側に支持させて制御弁体２に連繋し、外端側を穴７に対し出入自在としたばね受軸７０に支承させ、そのばね受軸７０を、制御弁体２に固定して組付ける押さえ金具７１により穴７よりの脱出を阻止せしめるなどによって、このバイアスばね３を制御弁体２の内腔に収納した形態とし、これにより、二つのばねのうちの一方のばねを、それの軸方向の長さが制御弁体２の軸方向の長さにラップした状態として、このばねの軸方向の長さ分だけ湯水混合栓Ａの全体の長さを短くし得るようにする。
【００２５】
このバイアスばね３の調整ねじ軸５に対する連繋は、バイアスばね３の外端側を内端側で受けるばね受軸７０の外端側を、温度調整ダイヤルＤ１の操作により回動する調整ねじ軸５によってケース１を軸方向にスライドするスライドブロック５０に衝合させることでよい。
【００２６】
このバイアスばね３を収蔵させるために制御弁体２の中心部位に形成する穴７は、そこに、バイアスばね３およびそのばね３の外端側を支承させるばね受軸７０を挿入するための挿入口となる開放口が、湯弁座１２の側に開放していればよく、制御弁体２の中心部位を軸方向に貫通しているように形成してよい。この穴７はそれの周壁を利用して、制御弁体２の湯弁２ａおよび水弁２ｂにより制御されてケース１内に流入してくる湯および水を、穴７の外周側において混合室ｂに向けて誘導する流路ｕが形成されるようになる。これには、この穴７の周壁を形成する制御弁体２のボディに、図８および図９にあるように、湯弁２ａおよび水弁２ｂを形成している筒状の弁部２’の内側で、穴７の内壁面の外周側となる部位に、軸方向に貫通する透孔２ｄ…を環状に整列させて開設しておき、これら透孔２ｄ…により、湯弁２ａおよび水弁２ｂにより制御されてケース１内に流入してくる湯と水とを混合室ｂ側に導く流路ｕを形成するようにしてよい。
【００２７】
このように、穴７の外周側に流路ｕを形成することで、制御弁体２の湯弁２ａおよび水弁２ｂに制御されてケース１内に流入する湯および水は、この穴７の外周側の流路ｕにより、この穴７内に収蔵されているバイアスばね３の間を通ることなく混合室ｂに向け流れ込んでいくようになる。
【００２８】
このとき、穴７内に挿入するバイアスばね３の内端側を支持させるために、穴７の底部側に設けておくばね受座２２を、穴７の底部側を塞ぐように形成して装設することで、制御弁体２により制御されてケース１内に流入する湯および水の、バイアスばね３およびそれを収蔵する穴７内に対する遮断が一層確実に行なわれるようになる。
【００２９】
また、この制御弁体２の中心部位に形成する穴７は、筒弁状に形成する制御弁体２のボディに、それの外周側の筒状の弁部２’と対応する長さに形成してよいものであるが、図５にあるように、制御弁体２のボディの、穴７の周壁となる部位を、湯弁２ａの側に、その湯弁２ａを越して長く延出するように延長させておくことで、前述の流入してくる湯と水の、穴７内およびバイアスばね３に対する遮断が一層効果的になる。
【００３０】
このとき、この湯弁２ａを越して延出する延長部の外周側には、軸方向視において図１０に示しているように、穴７の周壁部の外面から放射状に突出する案内羽根２ｃ…を、周方向に整列させて装設し、かつ、それら案内羽根２ｃ…を設けた部位の外径の寸法を、それら案内羽根２ｃ…の外周面が、ケース１の内壁面で湯弁座１２を越した部位に略摺接する程度に形成しておくことで、制御弁体２が軸方向に動くときに、この案内羽根２ｃ…がケース１の内壁面のうちの、湯弁座１２を水弁座１３と反対側に越した部位に摺接して、制御弁体２の動きをガイドするようになり、制御弁体２が感温ばね４の感温作動により制御作動を行なうときのハンチング現象を防止するようになる。
【００３１】
また、この制御弁体２の水弁２ｂとケース１の水流入口１１の内面側の水弁座１３とで構成する水弁機構部は、それの制御弁体２の水弁２ｂには、図５にあるように、そこを流過する水を案内する案内面に、径方向に略平行する平行部２０と、その平行部２０の内端側から混合室ｂ側に傾斜して内側に向かうテーパー部２１とを形設し、水弁座１３には、前記水弁２ｂの平行部２０と平行して対向する平行部１３０と、それの内端側から混合室ｂ側に傾斜内側に向かうテーパー部１３１とを形設し、これにより、水弁２ｂの平行部２０と水弁座１３の平行部１３０との間を流過した水を混合室ｂに向け斜めに誘導する流路ｗを、対向する水弁２ｂのテーパー部２１と水弁座１３のテーパー部１３１とで形成するようにする。
【００３２】
このとき、水弁２ｂの内端側に形成するテーパー部２１は、それの外径を、水弁座１３の内端側に形成するテーパー部１３１の内径よりも小径に形成しておいて、制御弁体２が水弁座１３側に突き当たるまで動いたときに、図７にあるように、水弁２ｂの平行部２０と水弁座１３の平行部１３０とだけが衝合し、水弁２ｂのテーパー部２１と水弁座１３のテーパー部１３１とは衝合しないで、それらの間に間隙が形成されるようにしておくことで、制御弁体２が水弁座１３側に動いたときの水弁２ｂと水弁座１３とによる閉塞作動が精確に行なわれるようになる。
【００３３】
また、水弁２ｂのテーパー部２１と水弁座１３のテーパー部１３１とで形成される流路ｗの下流側には、その流路ｗを経て混合室に向かう水の流れと湯弁２ａを流過してくる湯との混合を良くしてから、コイル状に巻かれて混合室ｂ内に収蔵される感温ばね４と接触をさせるために、この湯と水の流れを混合室ｂ内の外周部に誘導する案内面が存在するようにしておくことが有効である。
【００３４】
これには、制御弁体２の前述の穴７を形成するボディの中心部位を、図６にあるように、混合室ｂ側にも延出させて、穴７の周壁部が、湯弁２ａと水弁２ｂを形成した筒状の弁部２’を越して混合室ｂ側に深く突入するようにして、これの突出端部に、外周方向に突出するリング２３を設け、そのリング２３の上流側に向かう面２３ａを、アール状（弧状）ないしテーパーに形成しておくことでよい。
【００３５】
これにより、この流路ｗを経て流れ込んでくる水の流れに対し、弁部２’の内側に形成した流路ｕを流れてくる湯が、リング２３の上流側に向かう面２３ａに形成したテーパーまたはアールにより外周側に向けて誘導されて流路ｗから流入してくる水に混合しながら、それによる混合水を混合室ｂ内の外周部に向けて誘導するようになる。
【００３６】
また、制御弁体２の湯弁２ａおよび水弁２ｂを流過した湯および水を流入させる混合室ｂは、それの下流側の端部に、その混合室ｂ内に配位して制御弁体２に一端側を連繋する感温ばね４の他端側を支持させるばね支持金具８を装設するが、そのばね支持金具８は、混合室ｂの中心部位の下流側の端部を塞ぐ状態に装設し、かつ、このばね支持金具８の外周側には、混合室ｂの内周壁との間に、混合室ｂ内に流入してきた湯と水との混合水を流出させる流路ｙを形成しておく。
【００３７】
これにより、制御弁体２により制御されて混合室ｂ内に流入する湯と水との混合水は、コイル状に巻かれて混合室ｂ内に配設される感温ばね４の外周側に沿った部位を主な流路として混合室ｂ内を流過するようになり、感温ばね４に接触する混合水を均質に混ざり合ったものとして感温ばね４を正しく作動させるようにする。
【００３８】
このとき、混合室ｂの下流側の端部に配設するばね支持金具８は、混合室ｂの下流側の端部の中心部位を密閉する栓状に形成しておき、また、混合室ｂ内に配設する感温ばね４の内腔に位置する部位に、円柱状または円筒状に形成した円柱状体または円筒状体８０を配位し、それを混合室ｂ内の下流側の端部に設けたばね支持金具８に一体または一体的に組付け支持せしめるか、混合室ｂ内の上流側の端部に設けておくばね受座２２の、混合室ｂ側に対面する背面側に一体または一体的に組付け支持せしめておいて、この感温ばね４の内腔側となる混合室ｂの中心部位を混合室ｂ内の外周部位から遮断した状態となるようにしておくことで、制御弁体２に制御されて混合室ｂ内に流入する湯と水との混合水が、感温ばね４の外周側を主な流路として混合室ｂ内を流過していくようにするのを一層確実にする。
【００３９】
このとき、混合室ｂ内の中心部位に配設する上述の円筒状体または円柱状体８０を、図４にあるように、中空の円筒状体８０とした場合は、混合室ｂの中心部位に混合水が流れ込むようになるが、この混合水が流動しない滞留水となって、そこに停滞し、混合室ｂ内を流過する混合水と混じり合うことがないようになるから、混合水に温度むらを生ぜしめることがなく、感温ばね４の感温作動にハンチング現象を生ぜしめることはない。
【００４０】
【発明の効果】
以上説明したように、本発明手段による湯水混合栓Ａは、制御弁体２にそれの軸方向の両側から、対抗するように連繋する感温ばね４とバイアスばね３との二つのばねのうちの一方のばねであるバイアスばね３を、制御弁体２の中心部位に設ける穴７内に収納した状態とすることから、バイアスばね３の軸方向の長さ分だけ、全体の長さ寸法を短くできて小型化し得るようになる。
【００４１】
また、制御弁体２の湯弁２ａおよび水弁２ｂに制御されて混合室ｂ内に流入する湯と水との混合水が、混合室ｂ内に配設する感温ばね４の外周側に沿い混合室ｂ内を流過していくようにしていることから、感温ばね４の混合水の温度に応じた作動が正確となり、制御弁体２の制御作動がハンチング現象を起こさずに円滑に行なわれるようになる。
【図面の簡単な説明】
【図１】従前の湯水混合栓の一部破断した正面図である。
【図２】同上の制御弁機構部の縦断正面図である。
【図３】同上のバイアスばね部の湯の流れ状態の説明図である。
【図４】本発明を実施せる湯水混合栓の縦断正面図である。
【図５】同上の制御弁部の制御弁体の湯弁が湯弁座に衝合した状態時の縦断正面図である。
【図６】同上の制御弁部の制御弁体が湯弁座と水弁座との中間に位置している状態時の縦断正面図である。
【図７】同上の制御弁部の制御弁体の水弁が水弁座に衝合した状態時の縦断正面図である。
【図８】同上の制御弁体の図９における I−I 線断面図である。
【図９】同上の制御弁体の縦断正面図である。
【図１０】同上の制御弁体の図９におけるII−II線断面図である。
【符号の説明】
Ａ…湯水混合栓、ａ…弁箱本体（ボディ）、ｂ…混合室、ｃ…混合水流路、ｕ・ｖ・ｗ・ｙ…流路、Ｄ１…温度調整ダイヤル、Ｄ２…切換ダイヤル、Ｐ１・Ｐ２…流出ポート、１・１’…ケース、１０…湯流入口、１１…水流入口、１２…湯弁座、１３…水弁座、１３０…平行部、１３１…テーパー部、１４…ばね受け、２…制御弁体、２’…筒状の弁部、２ａ…湯弁、２ｂ…水弁、２ｃ…案内羽根、２ｄ…透孔、２０…平行部、２１…テーパー部、２２…ばね座、２３…リング、２３ａ…上流側に向かう面、３…バイアスばね、３０・３１…座板、３２…ガイド金具、３３…連通口、４…感温ばね、５…調整ねじ軸、５０…スライドブロック、６…切換弁体、６０・６１…連通口、７…穴、７０…ばね受軸、７１…押さえ金具、８…ばね支持金具、８０…円柱状体（円筒状体）。[0001]
[Technical field to which the invention belongs]
The present invention has a configuration in which a mixing valve is automatically adjusted using a temperature-sensitive spring whose force changes depending on temperature, instead of a wax thermoelement, in a hot and cold water mixing tap for mixing and discharging hot water and water. It is related with the improvement about a hot-and-water mixer tap.
[0002]
[Prior art]
The hot water / water mixing tap A in the form using the above-described temperature-sensitive spring is a cylindrical case formed integrally with the valve box main body or a cylinder as shown in FIG. The hot water inlet 10 and the water inlet 11 are formed on the peripheral wall of the case 1 which is formed in a shape and is detachably fitted to the valve box body a so as to be inserted into and removed from the cartridge, and the hot water inlet 10 is the case 1 As shown in FIG. 2, the water inlet 11 is arranged in parallel in the axial direction so as to be closer to one end side (left end side in FIG. 1) and closer to the inner side (right side). The hot water valve seat 12 and the water valve seat 13 are respectively installed, and the inner cavity of the case 1 has a cylindrical valve shape so as to move freely between the hot water valve seat 12 and the water valve seat 13. Hot water valve 2a and water valve 2 formed on the end face in the axial direction of the cylindrical wall by fitting the formed control valve body 2 Preparative respectively made to face the said hot water valve seat 12 and water valve seat 13 a.
[0003]
The control valve body 2 is connected to two springs, a bias spring 3 that abuts from one end side in the axial direction (left end side in FIG. 2) and a temperature-sensitive spring 4 that abuts from the other end side. Clamped by springs 3 and 4. Among the springs 3 and 4, the bias spring 3 has an adjustment screw that is rotated by a temperature adjustment dial D 1 that is provided with an end on the opposite side of the control valve body 2 on one end in the axial direction of the case 1. The shaft 5 is abutted against and supported by a slide block 50 that slides in the axial direction in the case 1. In the temperature-sensitive spring 4, the end opposite to the control valve body 2 is attached to the cylindrical wall of the case 1. The control valve body 2 is supported by a spring receiver 14 which is integrally or integrally connected and installed, and the two springs, ie, a bias spring 3 and a temperature sensitive spring 4, which are opposed to each other, are placed in a balanced position. Keep it.
[0004]
As a result, the rotation of the switching dial D2 assembled to the other end of the case 1 in a state where the slide block 50 is moved to a desired set temperature position by the rotation operation of the temperature adjustment dial D1 and held at that position. By the operation, the cylindrical switching valve body 6 fitted in the case 1 is rotated so that the outflow ports P1 and P2 provided on the peripheral wall of the case 1 ′ and the communication port 60 provided on the cylindrical wall of the switching valve body 6 are provided. 61 is aligned, and the mixing chamber b is communicated with the water discharge pipe side or the hose side so that the mixing chamber b is controlled at a flow rate controlled by the distance between the hot water inlet 12 and the hot water valve seat 12 and the hot water valve 2a. The water flowing into the mixing chamber b is mixed with the water flowing into the mixing chamber b at a flow rate controlled by the distance between the water valve seat 13 and the water valve 2b from the water inlet 11 into the mixed water flow path c. After that, it flows out to the water discharge pipe side or the hose side. become.
[0005]
At this time, when the temperature of the mixed water in the mixing chamber b is lower than the set temperature, the temperature-sensitive spring 4 is deformed to contract by changing the spring constant according to the temperature change of the mixed water flowing through. As the load on the bias spring 3 side increases, the control valve body 2 moves to the right side in FIG. 2, and the distance between the hot water valve seat 12 and the hot water valve 2a is increased to increase the amount of inflow of hot water. At the same time, the interval between the water valve seat 13 and the water valve 2b is narrowed to reduce the amount of inflow of water, the temperature of the mixed water is raised, and the temperature is returned to the set value.
[0006]
Further, when the temperature of the mixed water flowing through the mixing chamber b becomes higher than the set value, the temperature-sensitive spring 4 expands and deforms, and the urging force thereof becomes larger than the spring load of the bias spring 3, thereby controlling the temperature. The valve body 2 is moved to the left in FIG. 2 to narrow the opening between the hot water valve seat 12 and the hot water valve 2a to reduce the inflow amount of hot water, and at the same time, the opening between the water valve seat 13 and the water valve 2b. The temperature of the mixed water is lowered by increasing the degree of inflow of water to lower the temperature of the mixed water, thereby maintaining the temperature of the mixed water taken out from the water discharge pipe side or the hose side at the set temperature.
[0007]
[Problems to be solved by the invention]
Instead of using the above-described wax thermoelement, a hot water / water mixing tap A using a shape memory alloy temperature-sensitive spring 4 is provided in the case 1 so as to be movable in the axial direction of the case 1. The body 2 is abutted against the bias spring 3 from one side in the axial direction thereof, the temperature-sensitive spring 4 is abutted against the other side, and the control valve body 2 is sandwiched between the two springs. The control valve body 2 is held at a position where the opposing spring loads of the two springs are balanced, and the temperature-sensitive spring 4 which is one of the springs changes the spring constant according to the temperature change, thereby By varying the balance position of the two springs in the axial direction, the control valve body 2 is controlled according to the temperature, so that the bias spring 3 and the temperature-sensitive spring 4 are placed in the case by the control valve body 2. And put them in parallel in the axial direction. Since, there is a problem that the axial dimension of the case 1 is increased.
[0008]
Further, the length of the bias spring 3 varies in the axial direction in accordance with the operation of the slide block 50 that is displaced in the axial direction by the rotation of the temperature adjustment dial D1, as shown in FIG. In addition, a pair of seat plates 30 and 31 facing each other are assembled by being mounted and assembled so as to extend and contract in the axial direction via a guide fitting 32, and are assembled with the slide block 50, the control valve body 2, and the control valve body. As a result, the assembly and assembly of the bias spring 3 are troublesome.
[0009]
Further, since the hot water flowing in from the hot water inlet 10 flows into the coiled inner cavity of the bias spring 3 and flows into the mixing chamber b as a flow path, the bias Even when the spring 3 is pushed and shrunk in the axial direction and the interval between the coil turns is clogged, the bias spring 3 is moved in the axial direction so that the flow rate of the hot water flowing through the interval between the turns does not change. As shown in FIG. 3, the control valve body is formed on the seat plate 31 located on the control valve body 2 side of the pair of seat plates 30 and 31 of the bias spring 3 as shown in FIG. A pedestal extending to the 2 side is provided and the interval between the pedestals is used as a communication port, or a cylindrical portion is provided on the seat plate 31 and a communication port 33 is opened on the cylindrical wall thereof. A part of the hot water flowing in from the hot water inlet 10 flows through the gap of the winding of the bias spring 3. In addition to being allowed to flow into the central part in the case 1, it is necessary to flow through the other communication port 33, so that the axial part in the case 1 flows toward the mixing chamber b. For this reason, there is a problem that it is difficult to lengthen the axial length of the bias spring 3 and shorten the overall axial dimension of the hot and cold water mixing tap A.
[0010]
Moreover, the hot water flowing in from the hot water inlet 10 is led to the axial center part in the case 1 and is introduced into the axial center part of the mixing chamber b from that part, and the water flowing in from the water inlet 11 is joined to the outer peripheral side thereof. Since the mixture water is made to be mixed water, there is a problem that mixing of hot water and water is bad.
[0011]
Furthermore, since the responsiveness of the temperature sensitive spring is good, there is a problem that the control valve body vibrates easily and causes a hunting phenomenon by responding to a temperature change caused by uneven mixing of hot water and water.
[0012]
The present invention has been made in order to solve these problems occurring in a hot and cold water mixing tap using a temperature sensitive spring made of a conventional shape memory alloy. The bias spring can be easily assembled, hot water and water are mixed well, and the control operation of the control valve body is smooth without causing hunting. It aims to provide a new means to be performed.
[0013]
[Means for Solving the Problems]
In the present invention, as a means for achieving the above-described object, a hot water flow is applied to the body that forms the valve box body formed in a cylindrical shape or the peripheral wall of the cylindrical case 1 that is mounted in a cartridge shape in the body. The inlet 10 and the water inlet 11 are provided in parallel in the axial direction, and the hot water valve seat 12 and the water valve seat 13 are provided on the inner surface side thereof so that they face each other in the axial direction. A cylindrical control valve body 2 having hot water valves 2a and water valves 2b opposed to the hot water valve seat 12 and the water valve seat 13, respectively, at both axial ends is arranged to be movable in the axial direction. The control valve body 2 is connected to a temperature-sensitive spring 4 that urges from the water valve seat 13 side to the hot water valve seat 12 side and a bias spring 3 that urges from the hot water valve seat 12 side to the water valve seat 13 side. The control valve body 2 is movably supported by the balance of the springs 3 and 4. In the hot and cold water mixing valve for controlling the mixed water temperature by a change in the force of the temperature sensing spring 4 or bias spring 3, The water inlet 11 provided in the body or the case is connected to a water valve seat 13 formed on the inner surface side of the water inlet 11 from a parallel portion 130 that is substantially parallel to the radial direction and directed inward from the inner end of the parallel portion 130. The control valve body 2 is provided with a tapered portion 131 that inclines toward the mixing chamber b and faces inward, and the water valve 2b of the control valve body 2 includes a parallel portion 20 that faces the parallel portion 130 provided on the water valve seat 13, and water A tapered portion 21 facing the tapered portion 131 of the valve seat 13 is installed, and the water flowing in from the water inlet 11 by the tapered portion 131 of the water valve seat 13 and the tapered portion 21 of the water valve 2b is brought to the mixing chamber b side. The control valve element 2 is provided with a spring seat 22 that closes the flow at the central portion of the control valve body 2, and the upstream side of the outer periphery of the spring seat 22 is positioned downstream of the flow path w. Taper or rounded (arc) on the side toward Provided so as to protrude the ring 23 on the outer peripheral side A hot and cold water mixing tap is proposed.
[0014]
In addition, in addition to this, A spring that suspends one end side of the temperature-sensitive spring 4 stored in the mixing chamber b downstream of the control valve body 2 in the body or the case 1 in the central portion on the water valve 2b side in the lumen of the control valve body 2 A seat 22 is provided so as to block the central portion of the inner cavity of the control valve body 2, and a flow path v of hot water and water flowing from the control valve body 2 toward the mixing chamber b is provided between the inner wall of the case 1 and the spring seat 22. A spring support fitting 8 that is formed between the outer peripheral side of the mixing chamber b and suspends the other end side of the temperature-sensitive spring 4 at the central portion at the downstream end of the mixing chamber b is closed in the central portion of the mixing chamber b. The mixed water flow path y is formed on the outer peripheral side of the spring support fitting 8, and the main flow path of the mixed water flowing through the mixing chamber b is the outer peripheral side of the temperature-sensitive spring 4. A hot and cold water mixing tap.
[0015]
And in the above-mentioned hot and cold water mixing tap, A spring that suspends one end side of the temperature-sensitive spring 4 stored in the mixing chamber b downstream of the control valve body 2 in the body or the case 1 in the central portion on the water valve 2b side in the lumen of the control valve body 2 A seat 22 is provided so as to block the central portion of the inner cavity of the control valve body 2, and a flow path v of hot water and water flowing from the control valve body 2 toward the mixing chamber b is provided between the inner wall of the case 1 and the spring seat 22. A spring support fitting 8 is formed between the outer periphery and the downstream end of the mixing chamber b, and the other end of the temperature-sensitive spring 4 is suspended from the central portion in a state where the central portion of the mixing chamber b is closed. A mixed water flow path y is formed on the outer peripheral side of the spring support fitting 8, and a cylindrical body or a columnar body 80 located in the lumen of the temperature-sensitive spring 4 is formed at the central portion of the mixing chamber b. The main component of the mixed water that is installed so as to protrude from the spring seat 22 and / or the spring support fitting 8 and that flows through the mixing chamber b. The outer peripheral side of the temperature sensing spring 4 the road A hot and cold water mixing tap.
[0017]
And in the hot water and water mixing tap, One end side of the temperature-sensitive spring 4 stored in the mixing chamber b formed downstream of the control valve body 2 in the body or the case 1 is suspended in the central part on the water valve 2b side in the lumen of the control valve body 2. A spring seat 22 is provided so as to block the central portion of the inner cavity of the control valve body 2, and a flow path v of hot water and water flowing from the control valve body 2 toward the mixing chamber b is provided between the inner wall of the case 1 and the spring seat. 22 is formed between the outer peripheral side of the mixing chamber b and a spring support fitting 8 that suspends the other end side of the temperature-sensitive spring 4 at the center portion at the downstream end portion of the mixing chamber b. The mixed water flow path y is formed on the outer peripheral side of the spring support fitting 8. Hot water mixer tap.
[0019]
And in the hot water and water mixing tap, The water inlet 11 provided in the body or the case is connected to a water valve seat 13 formed on the inner surface side of the water inlet 11 from a parallel portion 130 that is substantially parallel to the radial direction and directed inward from the inner end of the parallel portion 130. The control valve body 2 is provided with a tapered portion 131 that inclines toward the mixing chamber b and faces inward, and the water valve 2b of the control valve body 2 includes a parallel portion 20 that faces the parallel portion 130 provided on the water valve seat 13, and water A tapered portion 21 facing the tapered portion 131 of the valve seat 13 is installed, and the water flowing in from the water inlet 11 by the tapered portion 131 of the water valve seat 13 and the tapered portion 21 of the water valve 2b is brought to the mixing chamber b side. A flow path w to be directed is formed, and the control valve body 2 is formed with a hole 7 opened in the axial direction at the center portion of the control valve body 2 along the axial direction. The bias spring 3 is inserted to support the inner end side at the bottom of the hole 7, The outer end side of the bias spring 3 is supported by a spring receiving shaft 70 which is inserted into the hole 7 so as to be freely inserted and removed from the hot water valve seat 12 side, and the spring receiving shaft 70 is fixed to the control valve body 2 and provided. 71 prevents the escape from the hole 7, and the bias spring 3 is accommodated in the lumen of the control valve body 2. A hot and cold water mixing tap.
[0020]
And in the hot water and water mixing tap, The water inlet 11 provided in the body or the case is connected to a water valve seat 13 formed on the inner surface side of the water inlet 11 from a parallel portion 130 that is substantially parallel to the radial direction and directed inward from the inner end of the parallel portion 130. The control valve body 2 is provided with a tapered portion 131 that inclines toward the mixing chamber b and faces inward, and the water valve 2b of the control valve body 2 includes a parallel portion 20 that faces the parallel portion 130 provided on the water valve seat 13, and water A tapered portion 21 facing the tapered portion 131 of the valve seat 13 is installed, and the water flowing in from the water inlet 11 by the tapered portion 131 of the water valve seat 13 and the tapered portion 21 of the water valve 2b is brought to the mixing chamber b side. The control valve body 2 is formed with a hole 7 along the axial direction that opens to the hot water valve seat 12 side, and the bias spring 3 is formed in the inner cavity of the hole 7. Is inserted and the inner end side is supported on the bottom of the hole 7 and the outer end Is inserted into the hole 7 so as to be freely inserted and removed, and is supported by a spring bearing shaft 70 which is prevented from being removed from the hole 7 by the presser fitting 71, and the bias spring 3 is accommodated in the hole 7, and the outer peripheral side of the peripheral wall of the hole 7 Thus, a flow path u for guiding the hot water that has flowed through the hot water valve 2a is formed in a portion that is inside the hot water valve 2a and the water valve 2b. A hot and cold water mixing tap.
[0021]
And in the hot and cold water mixing tap, The water inlet 11 provided in the body or the case is connected to a water valve seat 13 formed on the inner surface side of the water inlet 11 from a parallel portion 130 that is substantially parallel to the radial direction and directed inward from the inner end of the parallel portion 130. The control valve body 2 is provided with a tapered portion 131 that inclines toward the mixing chamber b and faces inward, and the water valve 2b of the control valve body 2 includes a parallel portion 20 that faces the parallel portion 130 provided on the water valve seat 13, and water A tapered portion 21 facing the tapered portion 131 of the valve seat 13 is installed, and the water flowing in from the water inlet 11 by the tapered portion 131 of the water valve seat 13 and the tapered portion 21 of the water valve 2b is brought to the mixing chamber b side. The control valve element 2 is provided with a plurality of guide vanes 2c radially parallel to each other on the side where the hot water valve 2a is provided, and the hot water valve 2a to the water valve 2b. Provide them so that they protrude to the opposite side. The outer peripheral surface of the inner blade 2c is slidably brought into contact with a portion of the inner wall surface of the body or the case 1 that extends from the hot water valve seat 12 to the opposite side of the water valve seat 13, thereby serving as a guide for the control valve body 2. To A hot and cold water mixer tap is proposed.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
A hot-water mixing tap A according to the present invention has a hot water inlet 10 as shown in FIG. 4 on the peripheral wall of a cylindrical case 1 that is inserted into a body a serving as a valve box body or a lumen thereof and assembled. The water inlet 11 and the water inlet 11 are opened in parallel in the axial direction, and the hot water valve seat 12 and the water valve seat 13 are formed in the inner portions thereof so that they face each other in the axial direction, In the case 1, a control valve body 2 formed in a cylindrical valve shape is provided, and a cylindrical valve portion 2 ′ in which a hot water valve 2a and a water valve 2b are formed at both ends in the axial direction thereof is provided with this hot water. The valve seat 12 and the water valve seat 13 are fitted so as to freely move in the axial direction.
[0023]
A bias spring 3 that urges the control valve body 2 to push from the hot water valve seat 12 side to the water valve seat 13 side, and a temperature sensitive spring that urges the control valve body 2 to push from the water valve seat 13 side to the hot water valve seat 12 side. 4 is connected to the bias spring 3 of these springs 3 and 4, the side opposite to the side connected to the control valve body 2 is set as one shaft end side of the case 1 (the left end in FIG. 4). The case 1 is connected to and supported by the slide block 50 that moves in the axial direction by the adjusting screw shaft 5 that is rotated by the operation of the temperature adjustment dial D1 provided on the side). In the mixing chamber b formed on the downstream side of the control valve body 2 in 1, the side opposite to the side connected to the control valve body 2 is supported by a spring support fitting 8 provided in a fixed position in the case 1. Thereby, the control valve body 2 is connected to the bias spring 3. The temperature sensing spring, which is one of the springs, is held between the two springs 3 and 4 opposed to the thermal spring 4 to hold the control valve body 2 at a position where the opposing spring loads of the two springs are balanced. 4 changes the balance position of the two springs in the axial direction by changing the spring constant in accordance with the temperature change, and according to the temperature of the mixed water flowing through the mixing chamber b through the control valve body 2. About performing control operation, you may comprise similarly to the hot and cold water mixing tap using the temperature sensitive spring made from a conventional memory alloy.
[0024]
However, the bias spring 3 that connects one end side to the control valve body 2 is formed with a hole 7 that opens to the side of the hot water valve seat 12 in the central portion of the control valve body 2, and the bias spring 3 is placed in the hole 7. The inner end side thereof is supported on the bottom side of the hole 7 and connected to the control valve body 2, and the outer end side is supported by a spring receiving shaft 70 which can be freely inserted into and removed from the hole 7. The bias spring 3 is accommodated in the inner cavity of the control valve body 2 by, for example, preventing the escape from the hole 7 by a press fitting 71 fixed to the control valve body 2 and assembled. Assuming that one of the two springs is wrapped with the axial length of the control valve body 2 in the axial direction, the entire hot-water mixing tap A is equal to the axial length of the spring. The length of can be shortened.
[0025]
The bias spring 3 is linked to the adjustment screw shaft 5 by adjusting the adjustment screw shaft 5 that rotates the outer end side of the spring receiving shaft 70 that receives the outer end side of the bias spring 3 on the inner end side by operating the temperature adjustment dial D1. The case 1 may be brought into contact with the slide block 50 that slides in the axial direction.
[0026]
The hole 7 formed in the central portion of the control valve body 2 for storing the bias spring 3 is inserted for inserting the bias spring 3 and a spring bearing shaft 70 for supporting the outer end side of the spring 3 therein. It is only necessary that the opening serving as the mouth is open to the hot water valve seat 12 side, and the opening may be formed so as to penetrate the central portion of the control valve body 2 in the axial direction. This hole 7 uses the peripheral wall of the hole 7 to control the hot water and water flowing into the case 1 under the control of the hot water valve 2a and the water valve 2b of the control valve body 2 on the outer peripheral side of the hole 7. A flow path u is formed to guide toward. For this purpose, as shown in FIGS. 8 and 9, the cylindrical valve portion 2 ′ forming the hot water valve 2a and the water valve 2b is formed on the body of the control valve body 2 forming the peripheral wall of the hole 7. On the inner side, through holes 2d penetrating in the axial direction are opened in a ring-like manner at the outer peripheral side of the inner wall surface of the hole 7, and the hot water valve 2a and the water valve 2b are opened by these through holes 2d. A flow path u that guides hot water and water flowing into the case 1 to the side of the mixing chamber b may be formed.
[0027]
In this way, by forming the flow path u on the outer peripheral side of the hole 7, hot water and water flowing into the case 1 under the control of the hot water valve 2 a and the water valve 2 b of the control valve body 2 are transferred to the hole 7. The flow path u on the outer peripheral side flows into the mixing chamber b without passing between the bias springs 3 stored in the hole 7.
[0028]
At this time, in order to support the inner end side of the bias spring 3 to be inserted into the hole 7, a spring seat 22 provided on the bottom side of the hole 7 is formed so as to close the bottom side of the hole 7. As a result, the hot water and water that are controlled by the control valve body 2 and flow into the case 1 are more securely blocked from the bias spring 3 and the hole 7 for storing it.
[0029]
Further, the hole 7 formed in the central portion of the control valve body 2 is formed in the body of the control valve body 2 formed in a cylindrical valve shape with a length corresponding to the cylindrical valve portion 2 'on the outer peripheral side thereof. However, as shown in FIG. 5, the portion of the body of the control valve body 2 that becomes the peripheral wall of the hole 7 extends to the hot water valve 2a side beyond the hot water valve 2a. By extending in this way, the above-described inflowing hot water and water are more effectively blocked from the hole 7 and the bias spring 3.
[0030]
At this time, on the outer peripheral side of the extended portion extending beyond the hot water valve 2a, as shown in FIG. 10, the guide blades 2c projecting radially from the outer surface of the peripheral wall portion of the hole 7 as viewed in the axial direction. Are arranged in the circumferential direction, and the outer diameter of the portion provided with the guide vanes 2c is set so that the outer peripheral surface of the guide vanes 2c. When the control valve body 2 moves in the axial direction, the guide vanes 2c... The hunting phenomenon when the control valve body 2 performs the control operation by the temperature sensing operation of the temperature sensing spring 4 by slidingly contacting the portion beyond the valve seat 13 and guiding the movement of the control valve body 2. Will come to prevent.
[0031]
In addition, the water valve mechanism portion constituted by the water valve 2b of the control valve body 2 and the water valve seat 13 on the inner surface side of the water inlet 11 of the case 1 is provided in the water valve 2b of the control valve body 2 as shown in FIG. As shown in FIG. 5, the guide surface that guides water flowing therethrough has a parallel portion 20 that is substantially parallel to the radial direction, and is inclined inward from the inner end side of the parallel portion 20 toward the mixing chamber b. The tapered portion 21 is formed, and the water valve seat 13 is parallel to the parallel portion 20 of the water valve 2b and is opposed to the parallel portion 130, and the inner end side thereof is inclined inward from the inner end side to the mixing chamber b side. The tapered portion 131 is formed, and thereby the flow path w for guiding the water flowing between the parallel portion 20 of the water valve 2b and the parallel portion 130 of the water valve seat 13 obliquely toward the mixing chamber b is formed. The tapered portion 21 of the opposing water valve 2b and the tapered portion 131 of the water valve seat 13 are formed.
[0032]
At this time, the tapered portion 21 formed on the inner end side of the water valve 2b has an outer diameter smaller than the inner diameter of the tapered portion 131 formed on the inner end side of the water valve seat 13, When the control valve body 2 moves to abut against the water valve seat 13 side, as shown in FIG. 7, only the parallel portion 20 of the water valve 2b and the parallel portion 130 of the water valve seat 13 collide, and the water valve The control valve body 2 is moved to the water valve seat 13 side by forming a gap between the tapered portion 21 of 2b and the taper portion 131 of the water valve seat 13 so as not to collide with each other. Then, the closing operation by the water valve 2b and the water valve seat 13 is accurately performed.
[0033]
Further, on the downstream side of the flow path w formed by the taper portion 21 of the water valve 2b and the taper portion 131 of the water valve seat 13, a water flow and hot water valve 2a toward the mixing chamber via the flow path w are provided. In order to improve the mixing with the flowing hot water and then to make contact with the temperature sensitive spring 4 wound in a coil and stored in the mixing chamber b, the flow of the hot water and water is mixed with the mixing chamber b. It is effective to have a guide surface that guides to the inner periphery.
[0034]
For this purpose, as shown in FIG. 6, the central portion of the body forming the aforementioned hole 7 of the control valve body 2 is extended also to the mixing chamber b side, and the peripheral wall portion of the hole 7 is connected to the hot water valve 2a. A ring 23 projecting in the outer peripheral direction is provided at the projecting end of the ring 23 so as to penetrate deeply into the mixing chamber b side through the cylindrical valve portion 2 ′ in which the water valve 2 b is formed. The surface 23a toward the upstream side may be formed in a round shape (arc shape) or a taper.
[0035]
As a result, with respect to the flow of water flowing in through the flow path w, the hot water flowing in the flow path u formed inside the valve portion 2 ′ is a taper formed on the surface 23 a toward the upstream side of the ring 23. Alternatively, the mixed water is guided toward the outer peripheral portion in the mixing chamber b while being mixed with the water that is guided toward the outer peripheral side by the radius and flows in from the flow path w.
[0036]
In addition, the mixing chamber b into which hot water and water that have passed through the hot water valve 2a and the water valve 2b of the control valve body 2 flow in is arranged in the mixing chamber b at the downstream end of the mixing chamber b. A spring support fitting 8 for supporting the other end side of the temperature-sensitive spring 4 linking one end side to the body 2 is installed. The spring support fitting 8 closes the downstream end of the central portion of the mixing chamber b. The flow path is installed in a state, and on the outer peripheral side of the spring support fitting 8, the mixed water of hot water and water flowing into the mixing chamber b flows out between the inner peripheral wall of the mixing chamber b. y is formed.
[0037]
Thereby, the mixed water of hot water and water that is controlled by the control valve body 2 and flows into the mixing chamber b is wound around the outer periphery of the temperature-sensitive spring 4 that is wound in a coil shape and disposed in the mixing chamber b. The temperature-sensitive spring 4 is made to flow properly in the mixing chamber b with the portion along the flow path as a main flow path, and the mixed water in contact with the temperature-sensitive spring 4 is uniformly mixed so that the temperature-sensitive spring 4 operates correctly.
[0038]
At this time, the spring support fitting 8 disposed at the downstream end of the mixing chamber b is formed in a plug shape that seals the central portion of the downstream end of the mixing chamber b, and the mixing chamber b A columnar body or a cylindrical body 80 formed in a columnar shape or a cylindrical shape is arranged at a position located in the inner cavity of the temperature-sensitive spring 4 disposed therein, and is arranged at the downstream end in the mixing chamber b. The spring support bracket 8 provided in the part is integrally or integrally assembled and supported, or the spring receiving seat 22 provided at the upstream end in the mixing chamber b is integrated with the back side facing the mixing chamber b side. Alternatively, by assembling and supporting integrally, the central part of the mixing chamber b on the lumen side of the temperature-sensitive spring 4 is blocked from the outer peripheral part in the mixing chamber b, The mixed water of hot water and water that is controlled by the control valve body 2 and flows into the mixing chamber b passes through the outer periphery of the temperature-sensitive spring 4 as a main flow path. To further ensure to so go flowed through the mixing chamber b and.
[0039]
At this time, when the above-described cylindrical body or columnar body 80 disposed at the central portion in the mixing chamber b is a hollow cylindrical body 80 as shown in FIG. 4, the central portion of the mixing chamber b However, the mixed water becomes a stagnant water that does not flow, stays there, and does not mix with the mixed water flowing through the mixing chamber b. Therefore, no temperature unevenness occurs, and no hunting phenomenon occurs in the temperature sensing operation of the temperature sensing spring 4.
[0040]
【The invention's effect】
As described above, the hot and cold water mixing plug A according to the means of the present invention is one of the two springs of the temperature-sensitive spring 4 and the bias spring 3 that are connected to the control valve body 2 from both sides in the axial direction thereof. Since the bias spring 3 which is one of the springs is housed in the hole 7 provided in the central portion of the control valve body 2, the entire length dimension is set by the length of the bias spring 3 in the axial direction. It can be shortened and can be downsized.
[0041]
Further, the mixed water of hot water and water flowing into the mixing chamber b under the control of the hot water valve 2a and the water valve 2b of the control valve body 2 is placed on the outer peripheral side of the temperature sensitive spring 4 disposed in the mixing chamber b. Since the flow in the mixing chamber b is made to flow along, the operation according to the temperature of the mixed water of the temperature sensing spring 4 becomes accurate, and the control operation of the control valve body 2 is smooth without causing a hunting phenomenon. Will be performed.
[Brief description of the drawings]
FIG. 1 is a partially broken front view of a conventional hot and cold water mixing tap.
FIG. 2 is a longitudinal front view of the control valve mechanism unit of the above.
FIG. 3 is an explanatory view of a hot water flow state in the bias spring portion.
FIG. 4 is a longitudinal front view of a hot and cold water mixing tap for carrying out the present invention.
FIG. 5 is a longitudinal front view of the control valve body of the control valve unit in the state where the hot water valve of the control valve member abuts on the hot water valve seat.
FIG. 6 is a longitudinal sectional front view when the control valve body of the control valve unit is located between the hot water valve seat and the water valve seat.
FIG. 7 is a longitudinal sectional front view when the water valve of the control valve body of the control valve unit is in contact with a water valve seat.
8 is a cross-sectional view taken along the line II of FIG. 9 of the control valve body.
FIG. 9 is a longitudinal front view of the control valve body.
10 is a cross-sectional view of the control valve body taken along the line II-II in FIG.
[Explanation of symbols]
A ... Hot water / water mixing tap, a ... Valve box body (body), b ... Mixing chamber, c ... Mixed water flow path, u / v / w / y ... Flow path, D1 ... Temperature adjustment dial, D2 ... Switching dial, P1 / P2: Outflow port, 1.1 ′ ... Case, 10: Hot water inlet, 11 ... Water inlet, 12 ... Hot valve seat, 13 ... Water valve seat, 130 ... Parallel part, 131 ... Tapered part, 14 ... Spring holder, 2 ... control valve body, 2 '... cylindrical valve part, 2a ... hot water valve, 2b ... water valve, 2c ... guide vane, 2d ... through hole, 20 ... parallel part, 21 ... taper part, 22 ... spring seat, DESCRIPTION OF SYMBOLS 23 ... Ring, 23a ... Upstream surface, 3 ... Bias spring, 30 * 31 ... Seat plate, 32 ... Guide metal fitting, 33 ... Communication port, 4 ... Temperature-sensitive spring, 5 ... Adjustment screw shaft, 50 ... Slide block , 6 ... switching valve body, 60/61 ... communication port, 7 ... hole, 70 ... spring bearing shaft, 71 ... presser fitting, 8 ... spring support Ingredients, 80 ... cylindrical body (cylindrical body).

Claims

A hot water inlet 10 and a water inlet 11 are provided in parallel in the axial direction on a peripheral wall of a cylindrical case 1 that is mounted in a cartridge shape in a body that is a valve box body formed in a cylindrical shape, The hot water valve seat 12 and the water valve seat 13 are provided on the inner surface side so as to face each other in the axial direction, and the hot water valve facing the hot water valve seat 12 and the water valve seat 13 in the body or case 1 respectively. A cylindrical control valve body 2 having 2a and a water valve 2b at both ends in the axial direction is disposed so as to be movable in the axial direction, and the control valve body 2 is attached to the hot water valve seat 12 side from the water valve seat 13 side. The temperature sensing spring 4 that is energized and the bias spring 3 that is energized from the hot water valve seat 12 side to the water valve seat 13 side are connected to each other, and the control valve body 2 is movably supported by the balance of the springs 3 and 4. The temperature of the mixed water is controlled by changing the force of the temperature sensing spring 4 or the bias spring 3. In the hot and cold water mixing tap, the water inlet 11 provided in the body or case has a parallel part 130 parallel to the water valve seat 13 formed on the inner surface side of the water inlet 11 and substantially parallel to the radial direction. A tapered portion 131 that is inclined inward from the inner end of the portion 130 toward the mixing chamber b is provided, and the control valve body 2 is opposed to the parallel portion 130 provided on the water valve seat 13 on the water valve 2b thereof. The tapered portion 21 facing the parallel portion 20 and the tapered portion 131 of the water valve seat 13 is installed, and the water flowing in from the water inlet 11 by the tapered portion 131 of the water valve seat 13 and the tapered portion 21 of the water valve 2b. the forming a mixing chamber b flows to direct the side path w, wherein the control valve member 2, downstream from the channel w at the outer periphery of the spring seat 22 provided that the spring seat 22 to close the flow to that of the central portion The taper is on the upstream side. Or round shape mixer tap, characterized in that provided to the projection of the ring 23 of the (arc) on the outer peripheral side.

A hot water inlet 10 and a water inlet 11 are provided in parallel in the axial direction on a peripheral wall of a cylindrical case 1 that is mounted in a cartridge shape in a body that is a valve box body formed in a cylindrical shape, The hot water valve seat 12 and the water valve seat 13 are provided on the inner surface side so as to face each other in the axial direction, and the hot water valve facing the hot water valve seat 12 and the water valve seat 13 in the body or case 1 respectively. A cylindrical control valve body 2 having 2a and a water valve 2b at both ends in the axial direction is disposed so as to be movable in the axial direction, and the control valve body 2 is attached to the hot water valve seat 12 side from the water valve seat 13 side. The temperature sensing spring 4 that is energized and the bias spring 3 that is energized from the hot water valve seat 12 side to the water valve seat 13 side are connected to each other, and the control valve body 2 is movably supported by the balance of the springs 3 and 4. The temperature of the mixed water is controlled by changing the force of the temperature-sensitive spring 4 or bias spring 3 In the hot water / water mixing tap, the temperature sensing spring 4 stored in the mixing chamber b in the downstream of the control valve body 2 in the body or the case 1 is located in the central part of the control valve body 2 on the water valve 2b side. A spring seat 22 that suspends one end side is provided so as to close the central portion of the inner cavity of the control valve body 2, and a flow path v of hot water and water flowing from the control valve body 2 toward the mixing chamber b is provided in the case 1. A spring support fitting 8 is formed between the inner wall and the outer peripheral side of the spring seat 22 and suspends the other end side of the temperature-sensitive spring 4 at the central portion at the downstream end of the mixing chamber b. The mixed water flow path y is formed on the outer peripheral side of the spring support fitting 8, and the main flow path of the mixed water flowing through the mixing chamber b is provided in the temperature-sensitive spring 4. A hot and cold water mixing tap characterized by having an outer peripheral side.

A hot water inlet 10 and a water inlet 11 are provided in parallel in the axial direction on a peripheral wall of a cylindrical case 1 that is mounted in a cartridge shape in a body that is a valve box body formed in a cylindrical shape, The hot water valve seat 12 and the water valve seat 13 are provided on the inner surface side so as to face each other in the axial direction, and the hot water valve facing the hot water valve seat 12 and the water valve seat 13 in the body or case 1 respectively. A cylindrical control valve body 2 having 2a and a water valve 2b at both ends in the axial direction is disposed so as to be movable in the axial direction, and the control valve body 2 is attached to the hot water valve seat 12 side from the water valve seat 13 side. The temperature sensing spring 4 that is energized and the bias spring 3 that is energized from the hot water valve seat 12 side to the water valve seat 13 side are connected to each other, and the control valve body 2 is movably supported by the balance of the springs 3 and 4. The temperature of the mixed water is controlled by changing the force of the temperature-sensitive spring 4 or bias spring 3 One end of the temperature-sensitive spring 4 stored in the mixing chamber b downstream of the control valve body 2 in the body or case at the central portion on the water valve 2b side in the lumen of the control valve body 2 A spring seat 22 that suspends the side is provided so as to block the central portion of the inner cavity of the control valve body 2, and a flow path v of hot water and water flowing from the control valve body 2 toward the mixing chamber b is provided between the inner wall of the case 1 and A spring support fitting 8 is formed between the outer periphery of the spring seat 22 and suspends the other end of the temperature-sensitive spring 4 at the center of the downstream end of the mixing chamber b. A cylindrical body located in the lumen of the temperature-sensitive spring 4 is formed in the central portion of the mixing chamber b. A cylindrical body 80 is installed so as to protrude from the spring seat 22 and / or the spring support fitting 8, and the mixing chamber b The hot and cold water mixing valve, wherein a has a main flow path of the mixed water flowing past the outer peripheral side of the temperature sensing spring 4.

A hot water inlet 10 and a water inlet 11 are provided in parallel in the axial direction on a peripheral wall of a cylindrical case 1 that is mounted in a cartridge shape in a body that is a valve box body formed in a cylindrical shape, The hot water valve seat 12 and the water valve seat 13 are provided on the inner surface side so as to face each other in the axial direction, and the hot water valve facing the hot water valve seat 12 and the water valve seat 13 in the body or case 1 respectively. A cylindrical control valve body 2 provided with 2a and a water valve 2b at both ends in the axial direction is arranged so as to be movable in the axial direction, and attached to the control valve body 2 from the water valve seat 13 side to the hot water valve seat 14 side. The temperature sensing spring 4 that is energized and the bias spring 3 that is energized from the hot water valve seat 12 side to the water valve seat 13 side are connected to each other, and the control valve body 2 is movably supported by the balance of the springs 3 and 4. The temperature of the mixed water is controlled by changing the force of the temperature-sensitive spring 4 or bias spring 3 In the hot and cold water mixing plug, the temperature sensitive spring housed in the mixing chamber b formed in the center of the control valve body 2 on the water valve 2b side and downstream of the control valve body 2 in the case 1 A spring seat 22 that suspends one end side of the control valve body 2 is provided so as to close the central portion of the inner cavity of the control valve body 2, and a flow path v of hot water and water flowing from the control valve body 2 toward the mixing chamber b is provided in the case 1 And a spring support fitting 8 that is formed between the inner wall of the spring seat 22 and the outer peripheral side of the spring seat 22 and suspends the other end of the temperature-sensitive spring 4 at the central portion at the downstream end of the mixing chamber b. provided in a state of closing the central site b, and the outer peripheral side of the spring support bracket 8, hot water according to claim 1 or claim 2 or claim 3 Symbol mounting, characterized in that the formation of the flow channel y of mixing water mixture plug.

A hot water inlet 10 and a water inlet 11 are provided in parallel in the axial direction on a peripheral wall of a cylindrical case 1 that is mounted in a cartridge shape in a body that is a valve box body formed in a cylindrical shape, The hot water valve seat 12 and the water valve seat 13 are provided on the inner surface side so as to face each other in the axial direction, and the hot water valve facing the hot water valve seat 12 and the water valve seat 13 in the body or case 1 respectively. A cylindrical control valve body 2 having 2a and a water valve 2b at both ends in the axial direction is disposed so as to be movable in the axial direction, and the control valve body 2 is attached to the hot water valve seat 12 side from the water valve seat 13 side. The temperature sensing spring 4 that is energized and the bias spring 3 that is energized from the hot water valve seat 12 side to the water valve seat 13 side are connected to each other, and the control valve body 2 is movably supported by the balance of the springs 3 and 4. The temperature of the mixed water is controlled by changing the force of the temperature sensing spring 4 or the bias spring 3. In the hot and cold water mixing valve which, in the water inlet 11 provided in the body or case, the water valve seat 13 formed on the inner surface side of the water inlet 11, the parallel portion 130 toward the inner side substantially in parallel with the radial direction and its parallel A tapered portion 131 that is inclined inward from the inner end of the portion 130 toward the mixing chamber b is provided, and the control valve body 2 is opposed to the parallel portion 130 provided on the water valve seat 13 on the water valve 2b thereof. The tapered portion 21 facing the parallel portion 20 and the tapered portion 131 of the water valve seat 13 is installed, and the water flowing in from the water inlet 11 by the tapered portion 131 of the water valve seat 13 and the tapered portion 21 of the water valve 2b. Is formed in the central portion of the control valve body 2 along the axial direction, and a hole 7 that opens to the hot water valve seat 12 side is formed. Insert the bias spring 3 into the bore of the hole 7 The outer end side of the bias spring 3 is supported by a spring receiving shaft 70 which is inserted into the hole 7 from the side of the hot water valve seat 12 so as to be freely inserted and removed, and the spring receiving shaft 70 is controlled by a control valve. A hot and cold water mixing plug, wherein the bias spring 3 is prevented from escaping from the hole 7 by a presser fitting 71 fixed to the body 2 and the bias spring 3 is housed in the inner cavity of the control valve body 2.

A hot water inlet 10 and a water inlet 11 are provided in parallel in the axial direction on a peripheral wall of a cylindrical case 1 that is mounted in a cartridge shape in a body that is a valve box body formed in a cylindrical shape, The hot water valve seat 12 and the water valve seat 13 are provided on the inner surface side so as to face each other in the axial direction, and the hot water valve facing the hot water valve seat 12 and the water valve seat 13 in the body or case 1 respectively. A cylindrical control valve body 2 having 2a and a water valve 2b at both ends in the axial direction is disposed so as to be movable in the axial direction. The temperature sensing spring 4 that is energized and the bias spring 3 that is energized from the hot water valve seat 12 side to the water valve seat 13 side are connected to each other, and the control valve body 2 is movably supported by the balance of the springs 3 and 4. The temperature of the mixed water is controlled by changing the force of the temperature-sensitive spring 4 or bias spring 3 In the hot and cold water mixing valve which, in the water inlet 11 provided in the body or case, the water valve seat 13 formed on the inner surface side of the water inlet 11, the parallel portion 130 toward the inner side substantially in parallel with the radial direction and its parallel A tapered portion 131 that is inclined inward from the inner end of the portion 130 toward the mixing chamber b is provided, and the control valve body 2 is opposed to the parallel portion 130 provided on the water valve seat 13 on the water valve 2b thereof. The tapered portion 21 facing the parallel portion 20 and the tapered portion 131 of the water valve seat 13 is installed, and the water flowing in from the water inlet 11 by the tapered portion 131 of the water valve seat 13 and the tapered portion 21 of the water valve 2b. The control valve body 2 is formed with a hole 7 along the axial direction that opens to the hot water valve seat 12 side in the central portion of the control valve body 2. Insert the bias spring 3 into the inner cavity The bias spring 3 is accommodated in the hole 7 by being supported by a spring bearing shaft 70 that is supported on the bottom of the base plate 7 and is inserted in the hole 7 so that the outer end side can be freely inserted into and removed from the hole 7. A hot and cold water mixing tap characterized in that a flow path u for guiding the hot water that has flowed through the hot water valve 2a is formed on the inner side of the hot water valve 2a and the water valve 2b on the outer peripheral side of the peripheral wall of the hole 7.

A hot water inlet 10 and a water inlet 11 are provided in parallel in the axial direction on a peripheral wall of a cylindrical case 1 that is mounted in a cartridge shape in a body that is a valve box body formed in a cylindrical shape, The hot water valve seat 12 and the water valve seat 13 are provided on the inner surface side so as to face each other in the axial direction, and the hot water valve facing the hot water valve seat 12 and the water valve seat 13 in the body or case 1 respectively. A cylindrical control valve body 2 having 2a and a water valve 2b at both ends in the axial direction is disposed so as to be movable in the axial direction. The temperature sensing spring 4 that is energized and the bias spring 3 that is energized from the hot water valve seat 12 side to the water valve seat 13 side are connected to each other, and the control valve body 2 is movably supported by the balance of the springs 3 and 4. The temperature of the mixed water is controlled by changing the force of the temperature-sensitive spring 4 or bias spring 3 In the hot and cold water mixing valve which, in the water inlet 11 provided in the body or case, the water valve seat 13 formed on the inner surface side of the water inlet 11, the parallel portion 130 toward the inner side substantially in parallel with the radial direction and its parallel A tapered portion 131 that is inclined inward from the inner end of the portion 130 toward the mixing chamber b is provided, and the control valve body 2 is opposed to the parallel portion 130 provided on the water valve seat 13 on the water valve 2b thereof. The tapered portion 21 opposite to the tapered portion 131 of the water valve seat 13 and the tapered portion 131 of the water valve seat 13 is installed. The control valve element 2 is provided with a plurality of guide vanes 2c radially parallel to the side on which the hot water valve 2a is provided. It protrudes from 2a to the opposite side of the water valve 2b The control valve body is provided by extending the outer peripheral surface of the guide vanes 2c to the portion of the inner wall surface of the body or case 1 that extends from the hot water valve seat 12 to the opposite side of the water valve seat 13. A hot and cold water mixing tap characterized by being a guide of No. 2.