JP3742629B2

JP3742629B2 - Eccentric tube for mixer tap

Info

Publication number: JP3742629B2
Application number: JP2003077702A
Authority: JP
Inventors: 明西岡
Original assignee: 株式会社三栄水栓製作所
Priority date: 2003-03-20
Filing date: 2003-03-20
Publication date: 2006-02-08
Anticipated expiration: 2023-03-20
Also published as: JP2004285653A

Description

【０００１】
【発明の属する技術分野】
本発明は、湯水混合栓における栓本体と給水用あるいは給湯用配管とを接続する場合に用いられる混合栓用偏心管に関するものである。
【０００２】
【従来の技術】
この混合栓用偏心管は、一端側に混合栓本体に対する接続部を有するとともに、その接続部の軸線に対して直交する方向に延びる第１水路部を有する偏心管本体と、一端側に給水・給湯配管にねじ込み固定される接続ねじ部を有するとともに、その接続ねじ部の軸線の方向に延びる第２水路部を有する固定管とを備え、前記偏心管本体の他端側に前記固定管の他端側を第１水路部の軸線と第２水路部の軸線とが互いに直交し、かつ、両水路部が連通する状態に嵌合保持させることにより、偏心管本体を固定管に対して前記第２水路部の軸線の周りに回動可能に組み付けて全体がクランク状に折れ曲がった形態に構成されている。
【０００３】
そして、このクランク状に折れ曲がった偏心管を用いて給水・給湯配管と混合栓本体を現場で接続するにあたっては、まず、固定管側の接続ねじ部を給水・給湯配管にねじ込み固定した後、偏心管本体の一端側の接続部を混合栓本体に袋ナット等を介して接続するといった順序の取付け作業要領が採られる。この場合、固定管側の接続ねじ部を給水・給湯配管にねじ込み開始する位置にはばらつきが生じやすく、それに起因して、ねじ込みが完了した時点での偏心管本体の接続部の位置と混合栓本体側の接続部の位置とがぴったりと合致することは稀であり、ほとんどの場合、両接続部の位置はずれている。そのため、一旦ねじ込んだ固定管側の接続ねじ部を配管から取り外し、ねじ込み開始位置を変えて再度ねじ込むといった具合に、前記両接続部の位置が合致するまで固定管側の接続ねじ部の取り外し及びねじ込みを何回となく繰り返す必要があり、所定の取付け作業に多大かつ面倒な手数と時間を要するという問題がある。
【０００４】
このような取付け作業に纏わる問題を解決するために、従来、偏心管本体と固定管との第２水路部軸線の周りでの相対回動部に、偏心管本体を固定管側の接続ねじ部のねじ込み方向と同一方向に回動させたとき、固定管が同方向に一体に回動し、また、接続ねじ部の弛み方向と同一方向に回動させたとき、偏心管本体のみが回動するといった、例えばラチェット機構等のような一方向回転クラッチ式の噛み合い機構を設けたものが知られている（例えば、特許文献１参照）。
【０００５】
【特許文献１】
特許第３２９４８３０号公報（図１３、図１４）
【０００６】
【発明が解決しようとする課題】
上記のような一方向回転クラッチ式の噛み合い機構を設けた従来の混合栓用偏心管では、偏心管本体を固定管側の接続ねじ部のねじ込み方向と同一方向に回動させると、噛み合い機構の噛み合いにより固定管が同方向に一体に回動して該固定管側の接続ねじ部が給水・給湯配管にねじ込み固定される。そして、そのようなねじ込みが完了した時点で偏心管本体の接続部の位置と混合栓本体側の接続部の位置とが合致していなかった場合は、偏心管本体を固定管側の接続ねじ部の弛み方向と同一方向に回動させると、噛み合い機構の噛み合いが解除されて偏心管本体のみが回動されて前記両接続部の位置を合致させることが可能である。このように、給水・給湯配管と混合栓本体を偏心管を用いて現場で接続する取付け作業時、偏心管本体を接続ねじ部のねじ込み方向およびその逆方向に回動操作することで、先にねじ込んだ固定管を取り外したり、再びねじ込む作業を繰り返さずとも固定管側のねじ接続部の給水・給湯配管へのねじ込み固定を維持したままで前記両接続部の位置合わせを行えるので、所定の取付け作業を手数少なく容易かつ能率よく行うことができる。
【０００７】
また、ラチェット機構のような一方向回転クラッチ式の噛み合い機構の一方を構成するラチェッ部のような被係合部の数を多くすることにより、偏心管本体と固定管とがねじ込み方向に一体回動するときの単位角度範囲を｛Ｎ（被係合部の数）／３６０｝と小さくすることが可能であり、これによって、現場の障害物等の存在により偏心管本体の回動作業スペースが制約されている場合でも、偏心管本体をその制約されたスペース内でねじ込み方向とその逆方向とに交互に繰り返し回動することで、固定管側の接続ねじ部を給水・給湯配管に容易にねじ込み固定することができるといった利点を有している。
【０００８】
しかしながら、上記した従来の混合栓用偏心管においては、一方向回転クラッチ式の噛み合い機構が、偏心管本体を固定管側の接続ねじ部のねじ込み方向と同一方向に回動させたとき固定管を同方向に一体に回動させ、その逆方向に回動させたとき固定管に関係なく偏心管本体のみが回動するといった具合に、クランク状形態の偏心管を用いて給水・給湯配管と混合栓本体を接続する際の取付け作業手数の削減化及び制約スペース内でのねじ込み固定作業の容易化に寄与する機能を発揮するだけであって、例えば偏心管本体の第１水路部に内蔵されているストレーナの点検や交換、清掃あるいは固定管側に内蔵されている流量調整栓部の点検や補修等々といった各種メンテナンスを行うために、当該クランク状形態の偏心管を給水・給湯配管及び混合栓本体から接続解除する取り外し作業、特に給水・給湯配管にねじ込み固定した固定管側のねじ接続部を弛ませて配管から取り外す作業時に、取付け時と同様な機能を期待することができない。したがって、上述のような各種メンテナンス時には、別に準備した特殊な工具等を用いて固定管のねじ接続部を給水・給湯配管から弛ませて取り外すといった面倒かつ手数のかかる作業を行わなければならないという問題があった。
【０００９】
本発明は上記実情に鑑みてなされたもので、給水・給湯配管への取付け作業時だけでなく、各種メンテナンスを行うための取り外し作業時にも、作業手数の削減化及び制約スペース内での作業の容易化に寄与する機能を発揮させることができる混合栓用偏心管を提供することを目的としている。
【００１０】
【課題を解決するための手段】
上記目的を達成するために、本発明に係る混合栓用偏心管は、一端側に混合栓本体に対する接続部を有するとともに、その接続部の軸線に対して直交する方向に延びる第１水路部を有する偏心管本体と、一端側に給水・給湯配管にねじ込み固定される接続ねじ部を有するとともに、その接続ねじ部の軸線の方向に延びる第２水路部を有する固定管とを備え、前記偏心管本体の他端側に前記固定管の他端側を第１水路部の軸線と第２水路部の軸線とが互いに直交し、かつ、両水路部が連通する状態に嵌合保持させることにより、偏心管本体を固定管に対して前記第２水路部の軸線の周りに回動可能に組み付けてなる混合栓用偏心管において、
前記固定管の他端外周部の全域には周方向に等間隔で複数の被係合部が形成されている一方、前記偏心管本体の他端部には前記被係合部に互いに異なる方向から弾性的に係合する二つの係合爪が被係合部に対して係合切換可能に設けられており、一方の係合爪を被係合部の一つに弾性係合させた第１状態では、偏心管本体を第２水路部の軸線の周りで前記接続ねじ部のねじ込み方向と同一方向に回動させたとき、固定管が同方向に一体に回動し、また、前記接続ねじ部の弛み方向と同一方向に回動させたとき、偏心管本体のみが回動し、かつ、他方の係合爪を被係合部の一つに弾性係合させた第２状態では、偏心管本体を第２水路部の軸線の周りで前記接続ねじ部の弛み方向と同一方向に回動させたとき、固定管が同方向に一体に回動し、また、前記接続ねじ部のねじ込み方向と同一方向に回動させたとき、偏心管本体のみが回動するように構成されていることを特徴とするものである。
【００１１】
上記のごとき構成を有する本発明によれば、給水・給湯配管と混合栓本体を現場接続する際の第一作業、つまり、固定管側の接続ねじ部を給水・給湯配管にねじ込む時は、二つの係合爪のうち一方の係合爪を被係合部の一つに係合させた第１状態とした上、偏心管本体を前記接続ねじ部のねじ込み方向と同一方向（以下、単にねじ込み方向という）に回動させることにより、固定管が同方向に一体回動して接続ねじ部が配管にねじ込み固定される。このとき、偏心管本体の回動スペースが障害物等の存在によって制約される場合は、その制約されたスペース内での回動を一旦中断して、該偏心管本体をねじ込み方向とは逆方向（以下、単に弛み方向という）に回動させる。この弛み方向への回動時には係合爪が被係合部から係合解除されるので、それまでの接続ねじ部のねじ込みは維持されたまま偏心管本体のみが弛み方向に回動することになる。そして、制約スペース内での弛み方向への回動により障害物等との干渉を回避できる位置に達した時点で、再び偏心管本体をねじ込み方向に回動させると、前記係合爪が被係合部の一つに係合した状態となって、固定管が一体回動して配管へのねじ込みが継続される。この作業の繰り返しによって、制約されたスペース内であっても、固定管の配管に対するねじ込み固定を容易に行うことができる。
【００１２】
上記のようにして固定管の接続ねじ部の配管に対する所定のねじ込みが完了した時点で、次に給水・給湯配管と混合栓本体を接続する際の第二作業、つまり、偏心管本体の一端側の接続部を混合栓本体に袋ナット等を介して接続する作業を行うが、このとき、偏心管本体の接続部の位置と混合栓本体側の接続部の位置とが合致していなかった場合は、偏心管本体を固定管側の接続ねじ部の弛み方向に回動させる。この弛み方向への回動時には係合爪が被係合部から係合解除されるので、前記接続ねじ部の配管に対するねじ込み固定は維持されたまま偏心管本体のみが弛み方向に回動され、この回動によって前記両接続部の位置を合致させることが可能であるから、固定管側の接続ねじ部の取り外し及びねじ込みを繰り返す必要がなく、両者を手数少なく容易かつ能率よく接続することができる。
【００１３】
また、上記のようにして給水・給湯配管と混合栓本体が接続された混合栓の使用状態において、既述のような各種メンテナンスを行うために、該クランク状形態の偏心管を給水・給湯配管及び混合栓本体から接続解除する取り外し作業が必要となった場合は、まず、偏心管本体の一端側接続部を混合栓本体から接続解除した上、二つの係合爪のうち他方の係合爪を被係合部の一つに係合させた第２状態とし、この状態で偏心管本体を前記接続ねじ部の弛み方向に回動させることにより、固定管が同方向に一体回動して接続ねじ部が配管から弛み外される。このときも、偏心管本体の回動スペースが障害物等の存在によって制約されている場合、その制約されたスペース内での回動を一旦中断して、該偏心管本体をねじ込み方向に回動させる。このねじ込み方向への回動時には係合爪が被係合部から係合解除されるので、それまでに弛み外された接続ねじ部がねじ込まれることなく、その弛み位置は維持されたまま偏心管本体のみがねじ込み方向に回動することになる。そして、制約スペース内でのねじ込み方向への回動により障害物等との干渉を回避できる位置に達した時点で、再び偏心管本体を弛み方向に回動させると、前記係合爪が被係合部の一つに係合した状態となって、固定管が一体回動して配管からの弛みが継続される。この作業の繰り返しによって、制約されたスペース内であっても、固定管を配管から少ない手数で容易かつ能率よく弛み外しすることができる。
【００１４】
本発明に係る混合栓用偏心管において、前記二つの係合爪をそれぞれ個別に被係合部に対して係合及び係合解除可能に構成してもよいが、特に、請求項２に記載のように、前記二つの係合爪を、支軸の周りに揺動自在に枢支された単一の揺動レバーの揺動方向の両側に形成し、この単一揺動レバーの支軸周りの揺動によって前記第１状態と第２状態とに切換操作可能に構成することが望ましい。この場合は、部品数を少なくして構造の簡単化が図れるだけでなく、単一揺動レバーを揺動操作するのみで前記第１状態と第２状態とを切り換えることが可能で、切換操作そのものを容易化、単純化することができる。
【００１５】
また、本発明において、請求項３に記載のように、前記偏心管本体の一端側の第１水路部にストレーナが交換可能に内蔵されている一方、前記固定管の他端側内部に流量調整栓部が設けられているような構成の混合栓用偏心管を対象とする場合は、それら内蔵部品に対するメンテナンスの必要頻度が高く、それだけ前記第２状態での取り外し作業機会が多くなるために、本発明における取付け、取り外し作業の容易化による有用性がより顕著である。
【００１６】
【発明の実施の形態】
以下、本発明の実施例を図面にもとづいて説明する。
図１は本発明に係る混合栓用偏心管を用いてなる湯水混合栓全体の平面図であり、同図において、１は湯水混合栓本体で、両側部に同一方向に向けて突出する状態で湯流入口２と水流入口３が形成されているとともに、中央部にはそれら流入口２，３から流入される湯、水を適宜混合してシャワー・止水・吐出の切換えが可能な流量調整バルブ４が、また、一端部には湯温調整ハンドル５が設けられている。
【００１７】
６は給湯側の偏心管、７は給水側の偏心管であり、給湯側の偏心管６は、図示省略した給湯配管と湯水混合栓本体１の湯流入口２間に亘り設置されて湯流路を形成する一方、給水側の偏心管７は、図示省略した給水配管と湯水混合栓本体１の水流入口３間に亘り設置された水流路を形成するものである。なお、これら給湯側偏心管６と給水側偏心管７とは同一の構造に構成されているため、以下においてはその一方の給水側偏心管７についてのみ詳細に説明し、給湯側偏心管６についてはそれの給水側偏心管７に該当する部分、部位に図面上、同一の符号を付して詳細な説明を省略する。
【００１８】
図２は前記給水側偏心管７の具体的な構造を示す断面図であり、この偏心管７は、大別して偏心管本体８と固定管９とを備え、全体がクランク状の形態に構成されている。偏心管本体８は筒状に形成され、その筒軸線方向の一端側には混合栓本体１に袋ナット１０を介してねじ接続可能な接続部１１が筒軸線ａに対して直交する方向への突出状態で形成されているとともに、前記筒軸線に沿う方向に延びる第１水路部１２を有し、かつ、この第１水路部１２の上流端部にはストレーナ１３がキャップ１４を介して着脱交換可能に内蔵されている。
【００１９】
一方、固定管９は、筒状に形成されてその軸線ｂが直線状に延びており、その筒軸線方向の一端部外周には給水配管にねじ込み固定される雄ねじからなる接続ねじ部１５が形成されているとともに、その筒軸線ｂに沿う方向に延びる第２水路部１６を有し、かつ、この第２水路部１６の延長線上で筒軸線方向の他端側内部には止水弁１７、該止水弁１７を弁座２８に対し遠近移動させる操作螺軸１８、該操作螺軸１８を螺合保持するナット状部材２９等から構成される流量調整栓部１９が設けられている。
【００２０】
そして、前記偏心管本体８の筒軸線方向の他端側には、前記固定管９の筒軸線方向の他端部が、第１水路部１２の軸線ａと第２水路部１６の軸線ｂとが互いに直交し、かつ、それら両水路部１２，１６が前記流量調整栓部１９を経て互いに連通するようにパッキン２０，２０を介して水密状態で嵌合保持されており、これによって、偏心管本体８が固定管９に対して前記第２水路部１６の軸線ｂの周りに回動可能に組み付けられている。
【００２１】
上記のように構成された混合栓用偏心管において、前記固定管９の他端外周部の全域には、図３〜図５に明示のように、周方向に等間隔で複数、この例では、２０個の略Ｖ形の被係合部２１…が形成されている一方、前記偏心管本体８の他端部には前記被係合部２１…に互いに異なる角度方向から係合する二つの係合爪２２，２３が設けられている。この二つの係合爪２２，２３は、偏心管本体８の周壁に連ねて形成の平坦部２４に埋め込み固定した支軸２５の周りに揺動自在に枢支された単一の揺動レバー２６の揺動方向の両側に形成されており、この揺動レバー２６を支軸２５周りに揺動操作することにより、一方の係合爪２２が被係合部２１…の一つに係合された第１状態（図３）と、他方の係合爪２３が被係合部２１…の一つに係合された第２状態（図５）とに係合切換可能に構成されている。
【００２２】
なお、前記揺動レバー２６の支軸２５上方部には、スプリングボール利用の弾性付勢機構２７が設けられており、この弾性付勢機構２７の中立点（図４）を乗り越えて揺動レバー２６が揺動することで前記第１状態と第２状態とに切り換わり、二つの係合爪２２，２３のいずれが被係合部２１…に係合されたときも、弾性付勢機構２７による弾性係合力が付与されるように構成されている。また、図中の３０は二つの係合爪２２，２３をもった揺動レバー２６の全面を被うカバーであり、揺動レバー２６の係合切換操作部２６ａ，２６ｂのいずれか一方が突出する大きさに形成されている。
【００２３】
次に、上記構成の混合栓用偏心管を用いて、給水（給湯）配管と湯水混合栓本体１とを施工現場で接続する取付け作業手順について説明する。
まず、固定管９側の接続ねじ部１５を給水（給湯）配管にねじ込む作業が行われるが、この時は、図３に示すように、揺動レバー２６を支軸２５周りで揺動させて二つの係合爪２２，２３のうち一方の係合爪２２が被係合部２１…の一つに弾性係合された第１状態とする。この状態で、偏心管本体８を第２水路部１６の軸線ｂ周りで前記接続ねじ部１５のねじ込み方向Ｐ１に回動させると、係合爪２２及び被係合部２１を介して固定管９が同方向Ｐ１に一体回動し接続ねじ部１５が配管にねじ込み固定される。このねじ込み時において、偏心管本体８の回動スペースが障害物等の存在によって制約される場合は、その制約されたスペース内での回動を一旦中断して、該偏心管本体８を弛み方向Ｐ２に回動させる。この弛み方向Ｐ２への回動時には係合爪２２が弾性付勢機構２７の弾性力に抗して被係合部２１…から係合解除されるので、それまでに配管にねじ込まれた接続ねじ部１５のねじ込みは維持されたままで偏心管本体８のみが弛み方向Ｐ２に回動することになる。そして、制約スペース内での弛み方向への回動により障害物等との干渉を回避できる位置にまで達した時点で、再び偏心管本体８をねじ込み方向Ｐ１に回動させることにより、前記係合爪２２が被係合部２１…の一つに係合した第１状態となって、固定管９が一体回動して配管へのねじ込みが継続される。この作業の繰り返しによって、制約されたスペース内であっても、固定管９の配管に対するねじ込み固定作業を容易に行うことができる。
【００２４】
上記のようにして固定管９の接続ねじ部１５の配管に対する所定のねじ込みが完了した時点で、次に偏心管本体８の一端側の接続部１１を混合栓本体１の水流入口３に袋ナット１０を介して接続する作業が行われるが、このとき、偏心管本体８の接続部１１の位置と混合栓本体１側の接続部である水流入口３の位置とが合致していないことが往々に発生する。この場合は、偏心管本体８を弛み方向Ｐ２に回動させる。この弛み方向への回動時には係合爪２２が被係合部２１から係合解除されるので、前記固定管９側の接続ねじ部１５の配管に対するねじ込み固定は維持されたまま偏心管本体８のみが弛み方向Ｐ２に回動され、この回動によって前記両接続部１１，３の位置を合致させることが可能となり、固定管９側の接続ねじ部１５の取り外し及びねじ込みを繰り返す必要がなく、両者１１，３を手数少なく容易かつ能率よく接続することができる。
【００２５】
また、上記のようにして給水（給湯）配管と混合栓本体１が偏心管７により接続された混合栓の使用状態において、例えばストレーナ１３の点検や交換、清掃あるいは固定管９側の流量調整栓部１９の点検や補修等々といった各種メンテナンスを行うために、当該クランク状形態の偏心管７を給水（給湯）配管及び混合栓から接続解除する取り外し作業が必要となった場合は、まず、偏心管本体８の一端側接続部１１を混合栓本体１の水流入口３から接続解除したうえ、図５に示すように、揺動レバー２６を支軸２５周りで揺動させて二つの係合爪２２，２３のうち他方の係合爪２３が被係合部２１…の一つに弾性係合された第２状態とする。
【００２６】
この第２状態で、偏心管本体８を弛み方向Ｐ２に回動させることにより、固定管９が同方向に一体回動して接続ねじ部１５が給水（給湯）配管から弛み外される。このときも、偏心管本体８の回動スペースが障害物等の存在によって制約されている場合、その制約されたスペース内での回動を一旦中断して、該偏心管本体８をねじ込み方向Ｐ１に回動させる。このねじ込み方向への回動時には係合爪２３が被係合部２１から係合解除されるので、それまでに弛み外された接続ねじ部１５がねじ込まれることなく、その弛み位置は維持されたまま偏心管本体８のみがねじ込み方向Ｐ１に回動することになる。そして、制約スペース内でのねじ込み方向への回動により障害物等との干渉を回避できる位置に達した時点で、再び偏心管本体８を弛み方向に回動させると、前記係合爪２３が被係合部２１の一つに弾性係合した第２状態となって、固定管９が一体回動して配管からの弛みが継続される。この作業の繰り返しによって、制約されたスペース内であっても、固定管９を配管から弛み外して偏心管７全体を給水（給湯）配管及び混合栓本体１から少ない手数で容易かつ能率よく取り外して、所定のメンテナンスを任意に行うことができる。
【００２７】
なお、本発明は、上述した実施の形態に限定されるものでなく、その他の種々の構造変更が可能である。例えば、二つの係合爪２２，２３をそれぞれ個別の揺動レバーに設けて、これら二つの揺動レバーの選択揺動によって両係合爪２２，２３を被係合部２１…に対して係合切換え可能に構成してもよい。
【００２８】
また、上述の実施の形態では、被係合部２１…を周方向に等間隔で２０個形成することにより、偏心管本体８と固定管９とがねじ込み方向Ｐ１及び弛み方向Ｐ２に一体回動するときの単位角度範囲を（２０／３６０＝１８°）に設定したものについて説明したが、例えば被係合部２１…の数を３６個にすると、単位角度範囲は（３６／３６０＝１０°）になるといったように、被係合部２１…の数を増やせば増やすほど単位角度範囲を小さくすることが可能で、狭いスペースでの作業を一層容易なものとすることができる。
【００２９】
【発明の効果】
以上説明したように、本発明によれば、クランク状の偏心管を混合栓と給水・給湯配管との間に取付ける時は、偏心管本体を接続ねじ部のねじ込み方向およびその逆方向に回動操作することで、先にねじ込んだ固定管を取り外したり、再びねじ込む作業を繰り返さずとも固定管側のねじ接続部の給水・給湯配管へのねじ込み固定を維持したままで偏心管本体側の接続部と混合栓側の接続部の位置合わせを行えるので、所定の取付け作業を手数少なく容易かつ能率よく行うことができるだけでなく、該偏心管における構成部品、内蔵部品に対する各種メンテナンスを行う場合の取り外し時にも、特殊な工具を別に準備しなくても、二つの係合爪の被係合部に対する係合を切り換えて偏心管本体を弛み方向に回動操作するだけで、所定の取外し作業を少ない手数で容易かつ迅速に行うことができる。しかも、取付け時及び取外し時において、障害物等の存在により偏心管本体の回動作業スペースが制約されるとしても、偏心管本体をその制約されたスペース内でねじ込み方向または弛みとその逆方向とに交互に繰り返し回動することで、固定管側の接続ねじ部を給水・給湯配管に容易にねじ込み固定したり、弛み解除することができるという効果を奏する。
【００３０】
特に、請求項２に記載のような構成を採用することによって、部品数を少なくして構造の簡単化が図れるだけでなく、単一揺動レバーを揺動操作するのみで第１状態と第２状態とを切り換えることが可能で、切換操作そのものを容易化、単純化することができる。
【図面の簡単な説明】
【図１】本発明に係る混合栓用偏心管を用いてなる湯水混合栓全体の平面図である。
【図２】同上混合栓用偏心管の具体的な構造を示す断面図である。
【図３】同上混合栓用偏心管の取付け状態（第１状態）を説明するための断面図である。
【図４】同上混合栓用偏心管の取付け状態（第１状態）から取外し状態（第２状態）への切換え過渡時の状態を示す断面図である。
【図５】同上混合栓用偏心管の取外し状態（第２状態）を説明するための断面図である。
【符号の説明】
１…混合栓本体、６…給水側偏心管、７…給湯側偏心管、８…偏心管本体、９…固定管、１１…接続部、１２…第１水路部、１３…ストレーナ、１５…接続ねじ部、１６…第２水路部、１９…流量調整栓部、２１…被係合部、２２，２
３…係合爪、２５…支軸、２６…揺動レバー、ａ，ｂ…軸線。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an eccentric tube for a mixing plug used when connecting a plug main body and a water supply or hot water supply pipe in a hot water mixing plug.
[0002]
[Prior art]
The eccentric tube for the mixing plug has a connecting portion with respect to the mixing plug main body on one end side, an eccentric tube main body having a first water channel portion extending in a direction orthogonal to the axis of the connecting portion, A fixed pipe having a second thread portion extending in the direction of the axis of the connection screw portion and having a connection screw portion screwed and fixed to the hot water supply pipe, and the other end of the eccentric tube main body. By fitting and holding the end side so that the axis of the first water channel part and the axis of the second water channel part are orthogonal to each other and the both water channel parts communicate with each other, the eccentric pipe body is fixed to the fixed pipe. The two water channel portions are assembled so as to be rotatable around the axis, and the whole is bent into a crank shape.
[0003]
And, when connecting the water supply / hot water supply pipe and the mixing plug main body in the field using the eccentric pipe bent into the crank shape, first, screw the connection thread part on the fixed pipe side into the water supply / hot water supply pipe and fix it. A sequence of attachment work procedures is adopted in which the connecting portion on one end side of the tube body is connected to the mixing plug body via a cap nut or the like. In this case, the position at which the connecting screw portion on the fixed pipe side starts to be screwed into the water / hot water supply pipe is likely to vary, and as a result, the position of the connecting portion of the eccentric pipe main body and the mixing plug when the screwing is completed. It is rare that the position of the connecting portion on the main body side exactly matches, and in most cases, the positions of both connecting portions are shifted. For this reason, once the fixed screw side connecting screw part is removed from the pipe, and the screwing start position is changed and screwed again, the fixing pipe side connecting screw part is removed and screwed in until the positions of the two connecting parts match. Has to be repeated several times, and there is a problem that a predetermined mounting operation requires a great amount of trouble and time.
[0004]
In order to solve the problems associated with such mounting work, conventionally, the eccentric tube main body is connected to the fixed thread side connecting screw portion at the relative rotation portion around the second water channel portion axis of the eccentric tube main body and the fixed tube. When rotating in the same direction as the screwing direction, the fixed tube rotates integrally in the same direction, and when rotating in the same direction as the loosening direction of the connecting screw, only the eccentric tube body rotates. For example, a one-way rotation clutch type engagement mechanism such as a ratchet mechanism is known (see, for example, Patent Document 1).
[0005]
[Patent Document 1]
Japanese Patent No. 3294830 (FIGS. 13 and 14)
[0006]
[Problems to be solved by the invention]
In the conventional mixing plug eccentric tube provided with the one-way rotating clutch type meshing mechanism as described above, when the eccentric tube body is rotated in the same direction as the screwing direction of the connecting thread portion on the fixed tube side, the meshing mechanism As a result of the meshing, the fixed pipe integrally rotates in the same direction, and the connecting screw portion on the fixed pipe side is screwed and fixed to the water supply / hot water supply pipe. And when such screwing is completed, if the position of the connecting portion of the eccentric tube main body and the position of the connecting portion on the mixing plug main body side do not match, the eccentric tube main body is connected to the connecting screw portion on the fixed tube side. By rotating in the same direction as the slack direction, the meshing mechanism is released and only the eccentric tube main body is rotated so that the positions of the two connecting portions can be matched. In this way, when connecting the water supply / hot water supply piping and the mixing plug main body in the field using the eccentric pipe, the eccentric pipe main body is rotated in the screwing direction of the connecting screw portion and the opposite direction, so that Without fixing the screwed fixed pipe or screwing it in again, it is possible to align the two connecting parts while maintaining the screwed fixing of the fixed pipe side screw connection to the water and hot water supply pipes. Work can be done easily and efficiently with less effort.
[0007]
Also, by increasing the number of engaged parts such as a ratchet part that constitutes one of the one-way rotation clutch type meshing mechanisms such as the ratchet mechanism, the eccentric pipe main body and the fixed pipe can be integrally rotated in the screwing direction. It is possible to reduce the unit angle range when moving to {N (number of engaged parts) / 360}, so that the rotation work space of the eccentric tube main body is reduced due to the presence of obstacles in the field. Even when restricted, the connecting pipe on the fixed pipe side can be easily connected to water supply and hot water supply piping by rotating the eccentric pipe body alternately and repeatedly in the restricted space in the screwing direction and the opposite direction. It has the advantage that it can be fixed by screwing.
[0008]
However, in the conventional mixing plug eccentric tube described above, the one-way rotating clutch type meshing mechanism rotates the fixed tube when the eccentric tube main body is rotated in the same direction as the screwing direction of the connecting screw portion on the fixed tube side. When rotating in the same direction and rotating in the opposite direction, only the eccentric tube body rotates regardless of the fixed tube, and mixed with water / hot water piping using a crank-shaped eccentric tube. It only functions to contribute to the reduction of the number of installation work when connecting the plug body and the ease of screwing and fixing work in the constrained space. For example, it is built in the first water channel of the eccentric pipe body. In order to perform various maintenance such as inspection and replacement of existing strainers, cleaning, and inspection and repair of the flow rate adjustment plugs built in the fixed pipe side, the crank-shaped eccentric pipe is connected to a water supply / hot water supply pipe. Removing to disconnect from the micro mixing valve body, in particular during operation of removing from the pipe by slack threaded connection of the fixed pipe side which is screwed onto the water supply and hot water supply pipe, it can not be expected Fitted and similar functions. Therefore, at the time of various kinds of maintenance as described above, it is necessary to perform troublesome and troublesome work such as loosening and removing the screw connection portion of the fixed pipe from the water supply / hot water supply pipe using a special tool prepared separately. was there.
[0009]
The present invention has been made in view of the above circumstances, and not only at the time of attaching to water supply / hot water supply pipes, but also at the time of detaching work for performing various maintenance, the number of work can be reduced and the work in the restricted space can be performed. It aims at providing the eccentric tube for mixing stoppers which can exhibit the function which contributes to facilitation.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the eccentric tube for a mixing plug according to the present invention has a connection portion for the mixing plug main body on one end side, and a first water channel portion extending in a direction orthogonal to the axis of the connection portion. The eccentric pipe main body, and a fixed pipe having a connection thread portion screwed and fixed to the water supply / hot water supply pipe on one end side, and a second pipe portion extending in the direction of the axis of the connection screw portion, By fitting and holding the other end side of the fixed pipe on the other end side of the main body in a state where the axis of the first water channel portion and the axis of the second water channel portion are orthogonal to each other and the both water channel portions communicate with each other. In the eccentric tube for a mixing plug formed by assembling the eccentric tube main body so as to be rotatable around the axis of the second water channel portion with respect to the fixed tube,
A plurality of engaged portions are formed at equal intervals in the circumferential direction in the entire area of the outer peripheral portion of the other end of the fixed tube, while the other end portion of the eccentric tube main body is in a direction different from the engaged portion. The two engaging claws that are elastically engaged with each other are provided so that the engagement can be switched with respect to the engaged part, and one engaging claw is elastically engaged with one of the engaged parts. In the first state, when the eccentric tube body is rotated around the axis of the second water channel portion in the same direction as the screwing direction of the connection screw portion, the fixed tube rotates integrally in the same direction, and the connection When rotated in the same direction as the slack direction of the threaded portion, in the second state where only the eccentric tube main body is rotated and the other engaging claw is elastically engaged with one of the engaged portions, When the eccentric tube body is rotated in the same direction as the loosening direction of the connecting screw portion around the axis of the second water channel portion, the fixed tube rotates integrally in the same direction. , When rotated in the screwing direction and the same direction of the connecting screw portion, only the eccentric tube body is characterized in that it is configured to rotate.
[0011]
According to the present invention having the above-described configuration, the first operation when connecting the water supply / hot water supply pipe and the mixing plug main body in the field, that is, when screwing the connection screw portion on the fixed pipe side into the water supply / hot water supply pipe, One of the two engaging claws is in a first state in which one of the engaging claws is engaged with one of the engaged parts, and the eccentric tube body is in the same direction as the screwing direction of the connecting screw part (hereinafter simply screwed). The fixing pipe is integrally rotated in the same direction, and the connection screw portion is screwed and fixed to the pipe. At this time, when the rotation space of the eccentric tube main body is restricted by the presence of an obstacle, the rotation in the restricted space is temporarily interrupted, and the eccentric tube main body is moved in the direction opposite to the screwing direction. (Hereinafter simply referred to as the slack direction). Since the engaging claw is disengaged from the engaged portion during the rotation in the slack direction, only the eccentric tube main body rotates in the slack direction while the screwing of the connecting screw portion is maintained. Become. When the eccentric tube main body is rotated again in the screwing direction when reaching the position where the interference with the obstacles can be avoided by the rotation in the slack direction within the constrained space, the engaging claw is engaged. The fixed pipe is rotated integrally with one of the joints, and screwing into the pipe is continued. By repeating this operation, the fixed pipe can be easily screwed and fixed even in a restricted space.
[0012]
When the predetermined screw-in to the pipe of the connection thread portion of the fixed pipe is completed as described above, the second operation when the water supply / hot water supply pipe and the mixing plug main body are connected next, that is, one end side of the eccentric pipe main body. If the position of the connecting part of the eccentric tube body does not match the position of the connecting part on the side of the mixing plug body Rotates the eccentric tube main body in the loosening direction of the connecting screw portion on the fixed tube side. Since the engaging claw is disengaged from the engaged portion at the time of rotation in the slack direction, only the eccentric tube main body is rotated in the slack direction while maintaining the screwing of the connection screw portion to the pipe, Since it is possible to match the positions of the two connecting portions by this rotation, it is not necessary to repeat the removal and screwing of the connecting screw portion on the fixed tube side, and both can be connected easily and efficiently with less effort. .
[0013]
In addition, in the use state of the mixing plug in which the water supply / hot water supply pipe and the mixing plug main body are connected as described above, the crank-shaped eccentric pipe is connected to the water supply / hot water supply pipe in order to perform various maintenance as described above. When the removal work for releasing the connection from the mixing plug main body is necessary, first, the one end side connecting portion of the eccentric tube main body is disconnected from the mixing plug main body, and then the other engaging claw of the two engaging claws In this state, the eccentric tube body is rotated in the slack direction of the connecting screw portion, so that the fixed tube is integrally rotated in the same direction. The connecting screw is loosened from the pipe. At this time, if the rotation space of the eccentric tube body is restricted by the presence of an obstacle, the rotation in the restricted space is temporarily interrupted and the eccentric tube body is rotated in the screwing direction. Let Since the engaging claw is disengaged from the engaged portion during rotation in this screwing direction, the connecting screw portion that has been loosened up to that point is not screwed in, and the loosened position is maintained and the eccentric tube is maintained. Only the main body rotates in the screwing direction. When the eccentric tube main body is rotated again in the loosening direction when reaching a position where interference with an obstacle or the like can be avoided by rotation in the screwing direction within the constrained space, the engaging claw is engaged. The fixed pipe is rotated integrally with one of the joints, and the slack from the pipe is continued. By repeating this operation, it is possible to easily and efficiently remove the fixed pipe from the pipe with less effort even in a restricted space.
[0014]
In the mixing tube eccentric tube according to the present invention, the two engaging claws may be configured to be individually engageable and disengageable with respect to the engaged portion. As described above, the two engaging claws are formed on both sides of the swinging direction of a single swinging lever pivotably supported around the support shaft. It is desirable to be able to switch between the first state and the second state by swinging around. In this case, not only can the structure be simplified by reducing the number of parts, but also the first state and the second state can be switched only by swinging the single swing lever. It can be made easier and simpler.
[0015]
In the present invention, as described in claim 3, a strainer is replaceably incorporated in the first water channel portion on one end side of the eccentric tube main body, while the flow rate is adjusted inside the other end side of the fixed tube. When targeting an eccentric tube for a mixing plug having a configuration in which a plug portion is provided, the frequency of maintenance for these built-in parts is high, so that the opportunity for removal work in the second state increases accordingly, The usefulness of the present invention due to the ease of attachment and removal work is more remarkable.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a plan view of the entire hot and cold water mixing tap using the eccentric pipe for mixing tap according to the present invention. In FIG. 1, reference numeral 1 denotes a hot and cold water mixing tap main body in a state of projecting in the same direction on both sides. A hot water inlet 2 and a water inlet 3 are formed, and in the center, hot water and water flowing in from the inlets 2 and 3 are mixed as appropriate so that the flow rate can be switched between shower, water stop and discharge. The valve 4 is provided with a hot water temperature adjusting handle 5 at one end.
[0017]
6 is an eccentric pipe on the hot water supply side, 7 is an eccentric pipe on the water supply side, and the eccentric pipe 6 on the hot water supply side is installed between the hot water supply pipe (not shown) and the hot water inlet 2 of the hot-water mixing tap main body 1. On the other hand, the eccentric pipe 7 on the water supply side forms a water flow path installed between the water supply pipe (not shown) and the water inlet 3 of the hot-water mixing tap main body 1. Since the hot water supply side eccentric tube 6 and the water supply side eccentric tube 7 have the same structure, only one water supply side eccentric tube 7 will be described in detail below. The same reference numerals are given to the portions and portions corresponding to the water supply side eccentric tube 7 in the drawing, and the detailed description is omitted.
[0018]
FIG. 2 is a cross-sectional view showing a specific structure of the water supply side eccentric tube 7. The eccentric tube 7 is roughly divided into an eccentric tube main body 8 and a fixed tube 9, and is configured in a crank shape as a whole. ing. The eccentric tube main body 8 is formed in a cylindrical shape, and a connecting portion 11 that can be screw-connected to the mixing plug main body 1 via a cap nut 10 on one end side in the cylindrical axis direction in a direction perpendicular to the cylindrical axis a. It has a first water channel portion 12 that is formed in a protruding state and extends in the direction along the cylinder axis, and a strainer 13 is attached to and removed from the upstream end of the first water channel portion 12 via a cap 14. Built in possible.
[0019]
On the other hand, the fixed tube 9 is formed in a cylindrical shape, and its axis line b extends linearly, and a connecting screw portion 15 formed of a male screw screwed into a water supply pipe is formed on the outer periphery of one end portion in the cylindrical axis direction. And has a second water channel portion 16 extending in the direction along the cylinder axis b, and a water stop valve 17 on the other end side in the cylinder axis direction on the extension line of the second water channel portion 16. A flow rate adjusting plug portion 19 is provided that includes an operation screw shaft 18 that moves the water stop valve 17 toward and away from the valve seat 28, a nut-like member 29 that screw-holds the operation screw shaft 18, and the like.
[0020]
Then, on the other end side of the eccentric tube main body 8 in the tube axis direction, the other end portion of the fixed tube 9 in the tube axis direction is connected to the axis a of the first water channel portion 12 and the axis b of the second water channel portion 16. Are orthogonally connected to each other, and are fitted and held in a watertight state via packings 20 and 20 so that both the water channel portions 12 and 16 communicate with each other through the flow rate adjusting plug portion 19. The main body 8 is assembled to the fixed pipe 9 so as to be rotatable around the axis b of the second water channel portion 16.
[0021]
In the eccentric tube for a mixing plug configured as described above, the entire area of the outer peripheral portion of the other end of the fixed tube 9 has a plurality at equal intervals in the circumferential direction, as clearly shown in FIGS. , 20 substantially V-shaped engaged portions 21 are formed, and the other end portion of the eccentric tube main body 8 is engaged with the engaged portions 21 from two different angular directions. Engaging claws 22 and 23 are provided. The two engaging claws 22 and 23 are connected to the peripheral wall of the eccentric tube main body 8 so as to be swingable around a support shaft 25 embedded and fixed in a flat portion 24 formed. The engaging lever 22 is engaged with one of the engaged portions 21 by operating the swinging lever 26 to swing around the support shaft 25. The first state (FIG. 3) and the second state (FIG. 5) in which the other engaging claw 23 is engaged with one of the engaged portions 21.
[0022]
An elastic urging mechanism 27 using a spring ball is provided above the support shaft 25 of the oscillating lever 26. The oscillating lever moves over the neutral point (FIG. 4) of the elastic urging mechanism 27. The elastic biasing mechanism 27 is switched even when either of the two engaging claws 22, 23 is engaged with the engaged portions 21... The elastic engagement force by is provided. Reference numeral 30 in the figure denotes a cover that covers the entire surface of the swing lever 26 having two engagement claws 22 and 23, and one of the engagement switching operation portions 26a and 26b of the swing lever 26 protrudes. It is formed in the size to be.
[0023]
Next, an installation work procedure for connecting a water supply (hot water supply) pipe and the hot water mixing plug main body 1 at a construction site using the eccentric pipe for a mixing plug having the above configuration will be described.
First, an operation of screwing the connecting screw portion 15 on the fixed pipe 9 side into the water supply (hot water supply) pipe is performed. At this time, the swing lever 26 is swung around the support shaft 25 as shown in FIG. One engagement claw 22 of the two engagement claws 22 and 23 is in a first state in which it is elastically engaged with one of the engaged portions 21. In this state, when the eccentric tube main body 8 is rotated around the axis b of the second water channel portion 16 in the screwing direction P1 of the connecting screw portion 15, the fixed tube 9 is interposed via the engaging claw 22 and the engaged portion 21. Are integrally rotated in the same direction P1, and the connecting screw portion 15 is screwed into the pipe and fixed. At the time of this screwing, when the rotation space of the eccentric tube main body 8 is restricted by the presence of an obstacle or the like, the rotation in the restricted space is temporarily interrupted, and the eccentric tube main body 8 is slackened. Rotate to P2. Since the engaging claw 22 is disengaged from the engaged portion 21 against the elastic force of the elastic urging mechanism 27 during the rotation in the slack direction P2, the connection screw screwed into the pipe until then is engaged. Only the eccentric tube main body 8 rotates in the slack direction P2 while the screwing of the portion 15 is maintained. When the eccentric tube body 8 is rotated in the screwing direction P1 again when reaching a position where interference with an obstacle or the like can be avoided by rotation in the slack direction within the constrained space, the engagement is performed. The nail | claw 22 will be in the 1st state engaged with one of the to-be-engaged parts 21 ..., the fixed pipe | tube 9 will rotate integrally, and the screwing into piping will be continued. By repeating this operation, it is possible to easily perform the screwing and fixing operation on the pipe of the fixed tube 9 even in a restricted space.
[0024]
When the predetermined screw-in to the pipe of the connection screw portion 15 of the fixed tube 9 is completed as described above, the connection portion 11 on one end side of the eccentric tube main body 8 is then connected to the water inlet 3 of the mixing plug main body 1 with a cap nut. In this case, the position of the connecting portion 11 of the eccentric tube main body 8 and the position of the water inlet 3 which is the connecting portion on the mixing plug main body 1 side often do not match. Occurs. In this case, the eccentric tube body 8 is rotated in the slack direction P2. Since the engaging claw 22 is disengaged from the engaged portion 21 during the rotation in the slack direction, the eccentric tube main body 8 is maintained while being fixed to the pipe of the connecting screw portion 15 on the fixed tube 9 side. Only in the slack direction P2, and by this rotation, it becomes possible to match the positions of the two connection portions 11, 3, and there is no need to repeat removal and screwing of the connection screw portion 15 on the fixed tube 9 side, Both 11 and 3 can be connected easily and efficiently with less effort.
[0025]
Further, in the use state of the mixing plug in which the water supply (hot water supply) pipe and the mixing plug main body 1 are connected by the eccentric tube 7 as described above, for example, the strainer 13 is inspected, replaced, cleaned, or the flow rate adjusting plug on the fixed tube 9 side. In order to perform various maintenance such as inspection and repair of the section 19, when the removal work for disconnecting the crank-shaped eccentric tube 7 from the water supply (hot water supply) piping and the mixing plug is necessary, first, the eccentric tube The connection end 11 of the main body 8 is disconnected from the water inlet 3 of the mixing plug main body 1 and, as shown in FIG. , 23, the second engagement claw 23 is elastically engaged with one of the engaged portions 21.
[0026]
In this second state, the eccentric tube main body 8 is rotated in the slack direction P2, whereby the fixed tube 9 is integrally rotated in the same direction, and the connection screw portion 15 is loosened from the water supply (hot water supply) pipe. Also at this time, when the rotation space of the eccentric tube body 8 is restricted by the presence of an obstacle or the like, the rotation in the restricted space is temporarily interrupted, and the eccentric tube body 8 is screwed in the direction P1. Turn to. Since the engaging claw 23 is disengaged from the engaged portion 21 during the rotation in the screwing direction, the loosened position is maintained without screwing the connecting screw portion 15 that has been loosened so far. Only the eccentric tube main body 8 rotates in the screwing direction P1. When the eccentric tube body 8 is rotated in the slack direction again when reaching a position where interference with an obstacle or the like can be avoided by rotation in the screwing direction within the constrained space, the engaging claw 23 is In the second state in which it is elastically engaged with one of the engaged portions 21, the fixed tube 9 rotates integrally and the slack from the piping is continued. By repeating this operation, even in a restricted space, the fixed pipe 9 is loosened from the pipe, and the entire eccentric pipe 7 is easily and efficiently removed from the water supply (hot water supply) pipe and the mixing plug main body 1 with less effort. Predetermined maintenance can be performed arbitrarily.
[0027]
The present invention is not limited to the above-described embodiment, and various other structural changes can be made. For example, two engaging claws 22 and 23 are provided on individual swing levers, and both the engaging claws 22 and 23 are engaged with the engaged portions 21 by selective swinging of the two swing levers. You may comprise so that switching is possible.
[0028]
Further, in the above-described embodiment, by forming 20 engaged portions 21 at equal intervals in the circumferential direction, the eccentric tube body 8 and the fixed tube 9 rotate integrally in the screwing direction P1 and the loosening direction P2. In the above description, the unit angle range is set to (20/360 = 18 °). For example, when the number of engaged portions 21 is 36, the unit angle range is (36/360 = 10 °). As the number of engaged portions 21 increases, the unit angle range can be reduced and the work in a narrow space can be further facilitated.
[0029]
【The invention's effect】
As described above, according to the present invention, when the crank-shaped eccentric pipe is attached between the mixing plug and the water supply / hot water supply pipe, the eccentric pipe body is rotated in the screwing direction of the connecting screw portion and in the opposite direction. By operating, without removing the previously screwed fixed pipe or screwing it in again, the screw connection on the fixed pipe side remains screwed into the water supply / hot water supply pipe, and the connection on the eccentric pipe main body side is maintained. Because the position of the connecting part on the mixing plug side can be adjusted, not only can the required installation work be done easily and efficiently, but also when removing various components for the eccentric tube and when performing maintenance on the built-in parts. However, even if a special tool is not separately prepared, the engagement of the two engaging claws with the engaged portion is switched and the eccentric tube main body is rotated in the slack direction to perform a predetermined removal operation. It can be easily and quickly performed with a small trouble to. Moreover, even when the rotation work space of the eccentric tube body is restricted due to the presence of obstacles or the like at the time of attachment and removal, the eccentric tube body is screwed or loosened in the restricted space and the opposite direction. By rotating alternately and alternately, there is an effect that the connecting screw portion on the fixed pipe side can be easily screwed and fixed to the water supply / hot water supply pipe and the slack can be released.
[0030]
In particular, by adopting the configuration as described in claim 2, not only can the number of components be reduced and the structure can be simplified, but also the first state and the first state can be achieved only by swinging the single swing lever. It is possible to switch between the two states, and the switching operation itself can be facilitated and simplified.
[Brief description of the drawings]
FIG. 1 is a plan view of an entire hot and cold water mixing tap using an eccentric pipe for a mixing tap according to the present invention.
FIG. 2 is a cross-sectional view showing a specific structure of the eccentric tube for a mixing stopper.
FIG. 3 is a cross-sectional view for explaining an attachment state (first state) of the eccentric plug for the mixing stopper;
FIG. 4 is a cross-sectional view showing a state at the time of switching from the attached state (first state) to the detached state (second state) of the mixing plug eccentric tube.
FIG. 5 is a cross-sectional view for explaining a removed state (second state) of the eccentric tube for a mixing stopper.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Mixing plug main body, 6 ... Feed water side eccentric pipe, 7 ... Hot water supply side eccentric pipe, 8 ... Eccentric pipe body, 9 ... Fixed pipe, 11 ... Connection part, 12 ... 1st water channel part, 13 ... Strainer, 15 ... Connection Threaded portion, 16 ... second water channel portion, 19 ... flow rate adjusting plug portion, 21 ... engaged portion, 22,2
3 ... engaging claw, 25 ... support shaft, 26 ... swing lever, a, b ... axis.

Claims

An eccentric pipe body having a first water passage portion extending in a direction orthogonal to the axis of the connection portion at one end side and having a connection portion to the mixing plug main body, and a connection screwed and fixed to a water supply / hot water supply pipe at one end side And a fixed pipe having a second water passage portion extending in the direction of the axis of the connection screw portion, and the other end side of the fixed pipe is connected to the other end side of the eccentric pipe body. By fitting and holding the axis line and the axis of the second water channel part orthogonal to each other and in a state where both water channel parts communicate with each other, the eccentric pipe body is moved around the axis of the second water channel part with respect to the fixed pipe. In the eccentric tube for mixing plugs assembled in a rotatable manner,
A plurality of engaged portions are formed at equal intervals in the circumferential direction in the entire area of the outer peripheral portion of the other end of the fixed tube, while the other end portion of the eccentric tube main body is in a direction different from the engaged portion. Two engagement claws that are elastically engaged with each other are provided so that the engagement can be switched with respect to the engaged portion.
In the first state in which one of the engaging claws is elastically engaged with one of the engaged portions, the eccentric pipe body is rotated around the axis of the second water channel portion in the same direction as the screwing direction of the connecting screw portion. When the fixed tube is rotated integrally in the same direction, and when rotated in the same direction as the slack direction of the connecting screw portion, only the eccentric tube main body is rotated,
In the second state in which the other engaging claw is elastically engaged with one of the engaged portions, the eccentric tube main body is arranged in the same direction as the loosening direction of the connecting screw portion around the axis of the second water channel portion. The fixed tube rotates integrally in the same direction when rotated, and only the eccentric tube main body rotates when rotated in the same direction as the screwing direction of the connecting screw portion. An eccentric tube for a mixing stopper.

The two engaging claws are formed on both sides of a swinging direction of a single swinging lever pivotally supported around the support shaft, and swinging around the support shaft of the single swinging lever. The eccentric tube for a mixing plug according to claim 1, configured to be switchable between the first state and the second state.

3. The strainer is built in the first water channel portion at one end side of the eccentric tube main body so as to be replaceable, and a flow rate adjusting plug portion is provided inside the other end side of the fixed tube. The eccentric tube for a mixing stopper as described.