JP4172629B2

JP4172629B2 - Connecting structure of shower head and grip

Info

Publication number: JP4172629B2
Application number: JP2002286558A
Authority: JP
Inventors: 智近藤
Original assignee: 株式会社ケーブイケー
Priority date: 2002-09-30
Filing date: 2002-09-30
Publication date: 2008-10-29
Anticipated expiration: 2022-09-30
Also published as: JP2004121335A

Description

【０００１】
【発明の属する技術分野】
本発明は、台所・厨房・洗面台等に配設されるシャワーヘッドのヘッド部と握り部との連結構造に関する。
【０００２】
【従来の技術】
従来、台所等で使用されるシャワーヘッドでは、水や湯等を流出させるヘッド部と把持する握り部とを備えて構成され、さらに、取替可能な浄化剤を握り部に内蔵するものがあった（例えば、特許文献１参照）。
【０００３】
このようなシャワーヘッドでは、浄化剤を取り替える際、ヘッド部と握り部との連結を解除して、浄化剤を取り替えていた。
【０００４】
【特許文献１】
特開２００１−１７３４２公報
【０００５】
【発明が解決しようとする課題】
しかし、上記のようなシャワーヘッドでは、ネジ結合によりヘッド部と握り部とを連結しており、両者の連結作業を簡便に行うことができなかった。
【０００６】
本発明は、上述の課題を解決するものであり、両者の連結を簡便に行なえるシャワーヘッドのヘッド部と握り部との連結構造を提供することを目的とする。
【０００７】
【課題を解決するための手段】
本発明に係る連結構造は、シャワーヘッドのヘッド部と握り部との連結部位相互が、略円筒状の連結筒部として、一方の連結筒部を他方の連結筒部内に挿入して円周方向に相対的に回転させることにより連結されるシャワーヘッドのヘッド部と握り部との連結構造であって、
連結筒部相互における連結時に対向する一方の外周面側若しくは内周面側に、係止突起が設けられ、他方の内周面側若しくは外周面側に、係止突起を挿入させる挿入溝と挿入溝から円周方向に延びて係止突起を係止する係止溝とが設けられ、
係止溝における前記挿入溝から離れた先端側を、連結時の係止突起の収納位置とするとともに、
係止溝を備えた溝側連結筒部が、係止溝における収納位置と挿入溝との間で、かつ、係止突起を備えた突起側連結筒部の溝側連結筒部からの抜け方向側の周壁に、挿入溝との間に隔壁を有して係止突起を収納可能な凹部を備えていることを特徴とする。
【０００８】
本発明に係る連結構造では、突起側連結筒部の係止突起を溝側連結筒部の挿入溝に挿入させ、さらに、係止突起を係止溝の収納位置まで、突起側・溝側連結筒部を円周方向に相対的に回転させれば、シャワーヘッドのヘッド部と握り部とを連結させることができる。
【０００９】
すなわち、本発明に係る連結構造では、ヘッド部と握り部との連結が、一方の連結筒部を他方の連結筒部内に挿入して円周方向に相対的に回転させて連結させる所謂バヨネット結合により、連結させることができることから、簡便に、連結させることができる。そのため、例えば、シャワーヘッド内に内蔵した取替可能な浄化剤を交換する交換作業等が、容易となる。
【００１０】
また、本発明に係る連結構造では、例えば、使用中に誤ってシャワーヘッドを回転させると、すなわち、係止突起を係止溝の収納位置から挿入溝側に移動させるように、突起側連結筒部を溝側連結筒部に対して相対的に回転させると、突起側連結筒部と溝側連結筒部とが相互に離れる方向にシャワーヘッド内の水圧を受けているから、係止突起は、凹部に収納される。従って、凹部の挿入溝側の隔壁により、突起側連結筒部と溝側連結筒部との相対的な回転は止まり、誤ってシャワーヘッドを回転させても両者の抜けを防止することができる。
【００１１】
そして、本発明に係る連結構造では、請求項２に記載するように、挿入溝若しくは係止溝の少なくとも一部を、溝側連結筒部の内外周に貫通させることが望ましい。このような構成では、溝側連結筒部の挿入溝や係止溝の切削等の加工が容易となる。
【００１２】
また、このような構成に関し、突起側連結筒部に設けられた係止突起が溝側連結部に設けられた係止溝における収納位置にある時は、突起側連結筒部に設けられたシール材のシール部位が、係止溝における突起側連結筒部の溝側連結筒部への挿入方向側の周縁に配置され、かつ、突起側連結筒部に設けられた係止突起が溝側連結筒部に設けられた凹部へ収納された時は、突起側連結筒部に設けられたシール材のシール部位が、溝側連結筒部の係止溝や挿入溝の貫通部位に配置されるように構成されていれば、つぎのような作用・効果を得ることができる。すなわち、係止突起が凹部へ収納された時には、シール部材の水密性が破られて、溝側連結筒部の内周側の水が、貫通部位を経て、さらに、挿入溝や係止溝を経て、溝側連結筒部の外周側に漏れ、さらには、シャワーヘッド外に漏れる。そのため、係止突起の凹部への収納を水漏れで確認できて、係止突起の凹部への収納状態をシャワーヘッドの外表面側から直接目視できなくとも、水漏れにより判断でき、係止突起の適正な収納位置へ収納するように、容易に、ヘッド部と握り部とを連結し直すことができる。
【００１３】
【発明の実施の形態】
以下、本発明の一実施形態を図面に基づいて説明すると、実施形態のシャワーヘッド１は、図１・２に示すように、原水ＮＷ若しくは浄水ＣＷを流出させるヘッド部２と、把持する握り部１８と、を備えて構成されている。
【００１４】
シャワーヘッド１のヘッド部２は、上カバー３と下カバー４とに覆われた水切換弁５を備えて構成されている。各カバー３・４は、握り部１８側のカバー１９とともに、後述する連結パイプ２０や弁室７内に高温の温水が流れても、使用者に熱を伝えないように、パイプ２０や弁室７との間に所定の隙間を設けて、配設されている。
【００１５】
水切換弁５は、上カバー３から突出している三つの操作ボタン１０・１１・１２を押圧操作することにより、原水ＮＷと浄水ＣＷとの流出形態を調整している。ちなみに、実施形態の場合、操作ボタン１０を押圧操作すれば、浄水ＣＷをストレート吐水させ、操作ボタン１１を押圧操作すれば、原水ＮＷをシャワー吐水させ、操作ボタン１２を押圧操作すれば、原水ＮＷをストレート吐水させることができる。なお、浄水ＣＷは、原水ＮＷが後述するカートリッジ２１内の浄化剤２２を通過して形成されている。また、この浄水Ｗは、浄化剤２２を通過することにより圧力損失が生じて、円滑にシャワー吐水できないことから、実施形態の水切換弁５では、浄水ＣＷのシャワー吐水は行なえないように構成されている。
【００１６】
さらに、水切換弁５は、各ボタン１０・１１・１２の操作により作動される各種弁機構（図符号省略）を内蔵させた弁室７と、連結パイプ２０やカートリッジ２１のニップル部２１ａと弁室７とを連結するコネクタ６、を備えて構成されている。弁室７は、上部側の外壁を構成するアッパケース８と、下部側の外壁を構成するロアケース９と、から構成されている。コネクタ６は、原水ＮＷとカートリッジ２１のニップル部２１ａからの浄水ＣＷとを弁室７内に流入させるように構成されており、アッパケース８から握り部１８側へ延びる略円筒状のニップル部８ａと結合されている。ロアケース９の上端側は、略円筒状に形成され、アッパケース８のロアケース９側に延びる略円筒状の下端部が水密性を確保して外嵌され、ロアケース９の下端側は、散水板１３の外周側筒部１３ｃが水密性を確保して外装されている。ロアケース９と外周側筒部１３ｃとは、対応する雌ネジと雄ネジとが形成されて、相互にネジ結合されている。
【００１７】
散水板１３は、中央に円形の開口１３ｂを備えた略円板状として、外周側の上方に延びる円筒状の外周側筒部１３ｃと、開口１３ｂの周縁から下方へ延びる円筒状の内周側筒部１３ｄと、を備えて構成されている。外周側筒部１３ｃと内周側筒部１３ｄとの間には、多数の小径の散水孔１３ａが上下面を貫通して形成されている。また、内周側筒部１３ｄ内には、泡沫器１４が配設されている。そして、この散水板１３は、ロアケース９から外周側筒部１３ｃの内周側と内周側筒部１３ｄの外周側との間の散水孔１３ａの配置領域に流出された水を、散水孔１３ａを経てシャワー吐水させることとなる。そしてまた、この散水板１３は、ロアケース９から内周側筒部１３ｄの内周側の開口１３ｂの配置領域に流出させた水を、泡沫器１４を経てストレート吐水させることとなる。
【００１８】
なお、図２に示す符号１５の部材は、カートリッジ２１の交換時期を表示する表示板である。この表示板１５は、略半割円筒状として、アッパケース８の下端部や散水板１３の外周側筒部１３ｃの外周面と下カバー８の内周面との間で、回動させ、かつ、停止可能に、配設されている。そして、表示板１５は、外周面に一年に応じた１２ヶ月の月数が表示されて、所定の月数を、図１に示すように、上カバー３の表示窓３ａから表示できるように、構成されている。
【００１９】
シャワーヘッド１の握り部１８は、原水ＮＷを浄化するための浄化剤２２を備えて取替可能なカートリッジ２１を内蔵させている。カートリッジ２１の上端には、浄化された浄水ＣＷを流出させるニップル部２１ａが配設されるとともに、カートリッジ２１の周囲には、円筒状の連結パイプ２０が配設されている。連結パイプ２０の元部側は、図示しないホースと連結され、さらに、このホースは、水と湯とを切り換えて流入させる図示しない給水具に連結されている。連結パイプ２０の周囲には、シャワーヘッド１の外周側に露出される円筒状のカバー１９が、配設されている。なお、原水ＮＷは、連結パイプ２０の内周面とカートリッジ２１の外周面との間を経て、アッパケース８のニップル部８ａにおける図示しない原水ＮＷの流入口側に流れるように構成されている。
【００２０】
そして、実施形態のヘッド部２と握り部１８との連結構造では、ヘッド部２におけるアッパケース８のニップル部８ａ下端側の先端部８ｂに、略円筒状の突起側連結筒部２４が形成され、握り部１８における連結パイプ２０上端側の先端部２０ａに、略円筒状の溝側連結筒部２８が形成されて、溝側連結筒部２８内に突起側連結筒部２４を挿入させ、両筒部２４・２８を円周方向に相対的に回転させることにより連結させている。
【００２１】
突起側連結筒部２４には、図３・４に示すように、外周面の略点対称の位置に、二つの係止突起２５・２５が配設され、溝側連結筒部２８には、内周面の略点対称の位置に、二つの連結溝２９・３０が配設されている。各連結溝２９・３０は、それぞれ、連結筒部２８の端面から連なって各係止突起２５・２５を挿入させる挿入溝３１と、挿入溝３１の先端から筒部２８の円周方向に延びて各係止突起２５・２５を係止する係止溝３２と、を備えて構成されている。
【００２２】
各係止溝３２・３２における挿入溝３１から離れた先端側は、筒部２４・２８相互の連結時における係止突起２５・２５の収納位置３３としている。さらに、各係止溝３２・３２における収納位置３３と挿入溝３１との間には、突起側連結筒部２４の溝側連結筒部２８からの抜け方向側の周壁３５に、それぞれ、係止突起２５を収納可能な凹部３６・３７が、形成されている。凹部３６は、筒部２８の円周方向で挿入溝３１と連通され、凹部３７は、筒部２８の円周方向における挿入溝３１側に、隔壁３８を設けて配設されている。この凹部３７の筒部２８の円周方向に沿う長さ寸法Ｌ０は、連結溝３０に対応する係止突起２５における筒部２４の円周方向に沿う長さ寸法Ｌ１より、僅かに大きく設定されている。さらに、各連結溝２９・３０には、筒部２８の内外周を貫通するように、貫通孔３９が形成されている。実施形態の場合、各連結溝２９・３０の貫通孔３９は、それぞれ、凹部３６・３７を含めた係止溝３２の略全域に、形成されている。
【００２３】
また、実施形態の場合、突起側連結筒部２４の外周面には、図２・３・５・６に示すように、各係止突起２５・２５より先端側に、筒部２４の円周方向に沿う凹溝２４ａが形成され、シールリング２６が凹溝２４ａに配設されている。筒部２４・２８の連結時におけるシールリング２６のシール部位２７は、図５・６に示すように、各連結溝２９・３０の係止溝３２における突起側連結筒部２４の溝側連結筒部２８への挿入方向側の周縁、に配置されるように設定されている。そして、連結筒部２４が連結筒部２８から抜け方向に相対的に移動して各係止突起２５が凹部３６・３７に収納された時におけるシールリング２７のシール部位２７は、係止溝３２に配置されるように設定されている。
【００２４】
なお、図３に示す符号８ｃの部位は、アッパケース８のニップル部８ａにコネクタ６を連結させるための係止環であり、係止環８ｃには、コネクタ６の図示しない係止爪が係止されることとなる。
【００２５】
また、この実施形態のシャワーヘッド１では、浄化剤２２を備えたカートリッジ２１の交換時等に、ヘッド部２と握り部１８との連結を解除しており、カートリッジ２１の取り替え時には、連結時と逆の操作で、ニップル部８ａにコネクタ６を組み付けた状態で、筒部２４・２８を相対的に回転させ、かつ、筒部２４を筒部２８から引き抜いて、ニップル部８ａを連結パイプ２０から取り外し、連結パイプ２０の上端側から使用済みのカートリッジ２１を取り出し、新たなカートリッジ２１を連結パイプ２０に挿入させ、さらに、ニップル部８ａを連結パイプ２０にバヨネット結合させれば、カートリッジ２１の交換を行なうことができる。なお、カートリッジ２１の交換時には、上・下カバー３・４は、表示板１５や散水板１３と共に、弁室７側に取り付けられた状態で、カバー１９から離脱することとなる。
【００２６】
そして、実施形態の連結構造では、ヘッド部２側の突起側連結筒部２４の各係止突起２５を、握り部１８側の溝側連結筒部２８における各連結溝２９・３０の挿入溝３１に挿入させ、さらに、図５・６に示すように、各係止突起２５を各係止溝３２の収納位置３３まで、突起側・溝側連結筒部２４・２８を円周方向（図３に示す状態では連結筒部２４を連結筒部２８に対して時計方向に回転させる方向）に相対的に回転させれば、シャワーヘッド１のヘッド部２と握り部１８とを連結させることができる。すなわち、ヘッド部２と握り部１８とを、所謂バヨネット結合により、連結させることができることから、両筒部２４・２８を簡便に連結させることができる。そのため、シャワーヘッド１内に内蔵した取替可能な浄化剤を交換する交換作業等が、容易となる。
【００２７】
また、実施形態の連結構造では、通常は突起側連結筒部２４に固定されたシールリング２６の摩擦抵抗により突起側連結筒部２４と溝側連結筒部２８との相対的回転は防止されているが、流出させる水ＮＷ・ＣＷの方向を変える等のためにヘッド部２を誤操作したり、誤ってヘッド部２に触れたりして、突起側連結筒部２４が、溝側連結筒部２８から抜けるように、溝側連結筒部２８に対して相対的に回転しても、突起側連結筒部２４と溝側連結筒部２８とが相互に離れる方向にシャワーヘッド１内の水ＮＷ・ＣＷの水圧を受けていることから、各係止突起２５が凹部３６・３７に収納される。そして、図７に示すように、凹部３７側では挿入溝３１側に隔壁３８が配設されており、凹部３７に収納された係止突起２５が、挿入溝３１側に移動できず、そのため、凹部３６側に収納された係止突起２５も挿入溝３１側に移動できず、その結果、突起側連結筒部２４と溝側連結筒部２８との相対回転が停止する。そして、各係止突起２５が凹部３６・３７に収納されたならば、突起側連結筒部２４と溝側連結筒部２８とが相互に離れる方向にシャワーヘッド１内の水ＮＷ・ＣＷの水圧を受けていることから、係止突起２５の凹部３７からの離脱は、防止される。
【００２８】
したがって、実施形態のシャワーヘッド１のヘッド部２と握り部１８との連結構造では、誤ってシャワーヘッド１を回転させても両者の抜けを防止することができる。
【００２９】
そして、実施形態の連結構造では、溝側連結筒部２８が、各連結溝２９・３０に内外周に貫通させる貫通孔３９を備えている。そのため、挿入溝３１や係止溝３２の加工が容易となる。
【００３０】
また、実施形態では、筒部２４・２８の連結時、図５・６に示すように、係止溝３２における凸部３６・３７の設けられた周壁３５の反対側の周壁３４周縁近傍に、突起側連結筒部２４に固定されたシール材としてのシールリング２６のシール部位２７が配置され、かつ、そのシール部位２７が、係止突起２５の凹部３６・３７への収納時に、溝側連結筒部２８に対して相対移動して係止溝３２の領域に配置されて、シールリング２６の水密性が破られるように構成されている。すなわち、各係止突起２５の凹部３６・３７への収納時に、図７に示すように、シールリング２６の水密性が破られて、溝側連結筒部２８の内周側の水ＮＷ・ＣＷが、貫通孔３９を経て、さらに、挿入溝３１や係止溝３２を経て、溝側連結筒部２８の外周側に漏れ、さらには、図８に示すように、カバー４・１９の間を経て、シャワーヘッド１外に漏れる。そのため、各係止突起２５の凹部３６・３７への収納を水漏れで確認できることから、各係止突起２５の凹部３６・３７への収納状態をシャワーヘッド１の外表面側から直接目視できなくとも、水漏れにより判断でき、係止突起２５の適正な収納位置３３へ収納するように、容易に、ヘッド部２と握り部１８とを連結し直すことができる。
【００３１】
なお、実施形態では、ヘッド部２側に突起側連結筒部２４を設け、握り部１８側に溝側連結筒部２８を設けた場合を示したが、図９に示すように、ヘッド部２側に溝側連結筒部２８を設け、握り部１８側に、溝側連結筒部２８内に挿入させる突起側連結筒部２４を設けてもよい。
【００３２】
また、実施形態では、突起側連結筒部２４の外周面に係止突起２５を設け、溝側連結筒部２８の内周面に挿入溝３１と凹部３７を有した係止溝３２とを設けた場合を示したが、図１０に示すように、内周面に係止突起２５を設けた突起側連結筒部２４Ａと、外周面に挿入溝３１と凹部３７を有した係止溝３２とを設けて、突起側連結筒部２４Ａに挿入させる溝側連結筒部２８Ａと、を、それぞれ、ヘッド部２側若しくは握り部１８側に、配設させて、所謂バヨネット結合させてもよい。
【００３３】
さらに、実施形態では、突起側連結筒部２４に二つの係止突起２５を設け、溝側連結筒部２８に、各係止突起２５を挿入させて係止する連結溝２９・３０を二つ設けた場合を示したが、突起側連結筒部２４には、一つあるいは三つ以上の係止突起２５を設け、溝側連結筒部２８に、対応する数の連結溝２０・３０を設けてもよい。そして、少なくとも一つの係止溝３２に、隔壁３８を備えた凹部３７を設ければよい。
【００３４】
さらにまた、実施形態では、溝側連結筒部２８の内外周を貫通する貫通孔３９を、係止溝３２の略全域に配置させた場合を示したが、図９・１０に示すように、係止溝３２の一部や挿入孔３１の一部に、貫通孔３９を設けてもよい。
【００３５】
なお、図９・１０に示す連結構造においても、係止溝３２における凹部３７の設けられた周壁３５の反対側の周壁３４周縁に、突起側連結筒部２４・２４Ａに固定されたシール材が配置され、かつ、そのシール部位が、係止突起２５の凹部３７への収納時に、溝側連結筒部２８・２８Ａに対して相対移動して係止溝３２や挿入溝３１の領域に配置されて、シール部材の水密性が破られるように構成されていれば、係止突起２５の凹部３７への収納時に、シール部材の水密性が破られて、溝側連結筒部２８・２８Ａの内周側の水が、貫通孔３９を経て、さらに、挿入溝３１や係止溝３２を経て、溝側連結筒部２８・２８Ａの外周側に漏れ、さらには、シャワーヘッド外に漏れることから、係止突起２５の凹部３７への収納を水漏れで確認することができる。
【図面の簡単な説明】
【図１】本発明の一実施形態のシャワーヘッドを示す部分斜視図である。
【図２】同実施形態の概略縦断面図である。
【図３】同実施形態の要部を示す概略分解部分斜視図である。
【図４】同実施形態の突起側・溝側連結筒部の相互の連結完了状態の概略横断面図であり、図５のIV−IV部位に対応する。
【図５】同実施形態の突起側・溝側連結筒部の相互の連結完了状態の概略縦断面図であり、隔壁を備えた凹部側の係止溝と係止突起との係止状態を示す。
【図６】同実施形態の突起側・溝側連結筒部の相互の連結完了状態の概略側面図であり、隔壁を備えない凹部側の係止溝と係止突起との係止状態を示す。
【図７】同実施形態の突起側連結筒部の係止突起が溝側連結筒部における隔壁を備えた凹部内に収納された状態を示す概略縦断面図である。
【図８】同実施形態のシャワーヘッドの水漏れ状態を示す図である。
【図９】実施形態の変形例における要部を示す概略分解部分斜視図である。
【図１０】実施形態の他の変形例における要部を示す概略分解部分斜視図である。
【符号の説明】
１…シャワーヘッド、２…ヘッド部、１８…握り部、２４・２４Ａ…突起側連結筒部、２５…係止突起、２８・２８Ａ…溝側連結筒部、３１…挿入溝、３２…係止溝、３５…周壁、３６・３７…凹部、３８…隔壁、３９…貫通孔。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connection structure between a head portion and a grip portion of a shower head disposed in a kitchen, kitchen, washstand, or the like.
[0002]
[Prior art]
Conventionally, a shower head used in a kitchen or the like is configured to include a head part that allows water or hot water to flow out and a grip part to grip, and further includes a replaceable cleaning agent built into the grip part. (For example, see Patent Document 1).
[0003]
In such a shower head, when the cleaning agent is replaced, the connection between the head portion and the grip portion is released to replace the cleaning agent.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-17342
[Problems to be solved by the invention]
However, in the shower head as described above, the head portion and the grip portion are connected by screw connection, and the connecting operation of both cannot be easily performed.
[0006]
This invention solves the above-mentioned subject, and it aims at providing the connection structure of the head part and grip part of a shower head which can perform both connection simply.
[0007]
[Means for Solving the Problems]
In the connection structure according to the present invention, the connection portions of the head portion and the grip portion of the shower head are arranged in a circumferential direction by inserting one connection tube portion into the other connection tube portion as a substantially cylindrical connection tube portion. A connecting structure of the head part of the shower head and the grip part which are connected by being rotated relative to each other,
A locking projection is provided on one outer peripheral surface or inner peripheral surface facing each other during connection in the connecting cylinder portions, and an insertion groove and an insertion for inserting the locking projection on the other inner peripheral surface or outer peripheral surface are inserted. A locking groove extending in the circumferential direction from the groove and locking the locking projection,
The front end side of the locking groove away from the insertion groove is the storage position of the locking protrusion at the time of connection,
The groove-side connecting cylinder portion provided with the locking groove is between the storage position in the locking groove and the insertion groove, and the protruding direction of the protrusion-side connecting cylinder portion provided with the locking protrusion from the groove-side connecting cylinder portion The peripheral wall on the side is provided with a recess having a partition wall between the insertion groove and capable of accommodating a locking projection.
[0008]
In the connection structure according to the present invention, the locking projection of the projection-side connecting cylinder portion is inserted into the insertion groove of the groove-side connecting cylinder portion, and further, the locking projection is connected to the projection-side / groove-side connection to the storage position of the locking groove. If the tube portion is relatively rotated in the circumferential direction, the head portion and the grip portion of the shower head can be connected.
[0009]
That is, in the connection structure according to the present invention, the so-called bayonet connection is made by connecting the head part and the grip part by inserting one connection cylinder part into the other connection cylinder part and relatively rotating in the circumferential direction. Since it can connect, it can connect simply. Therefore, for example, an exchange operation for exchanging the replaceable purifier built in the shower head is facilitated.
[0010]
Further, in the connection structure according to the present invention, for example, when the shower head is accidentally rotated during use, that is, the protrusion-side connecting cylinder is moved so that the locking protrusion is moved from the storage position of the locking groove to the insertion groove. When the part is rotated relative to the groove-side connecting cylinder part, the protrusion-side connecting cylinder part and the groove-side connecting cylinder part are subjected to the water pressure in the shower head in the direction away from each other. And stored in the recess. Therefore, the relative rotation of the projection-side connecting cylinder part and the groove-side connecting cylinder part is stopped by the partition wall on the insertion groove side of the recess, and even if the shower head is erroneously rotated, the both can be prevented from coming off.
[0011]
And in the connection structure which concerns on this invention, as described in Claim 2, it is desirable to make at least one part of an insertion groove or a locking groove penetrate the inner periphery of a groove side connection cylinder part. In such a configuration, processing such as cutting of the insertion groove and the locking groove of the groove side connecting cylinder portion is facilitated.
[0012]
In addition, with respect to such a configuration, when the locking projection provided on the projection-side connecting cylinder portion is in the storage position in the locking groove provided on the groove-side connecting portion, the seal provided on the projection-side connecting cylinder portion The seal part of the material is arranged on the peripheral edge of the projection side connection cylinder part in the insertion direction side of the projection side connection cylinder part in the engagement groove, and the engagement protrusion provided on the projection side connection cylinder part is connected to the groove side connection. When housed in the recess provided in the tube portion, the seal portion of the sealing material provided in the projection side connecting tube portion is arranged in the locking groove of the groove side connecting tube portion or the through portion of the insertion groove. The following actions and effects can be obtained. That is, when the locking projection is housed in the recess, the water tightness of the seal member is broken, and the water on the inner peripheral side of the groove-side connecting cylinder portion passes through the penetration portion, and further inserts the locking groove and the locking groove. Then, it leaks to the outer peripheral side of a groove side connection cylinder part, and also leaks out of a shower head. For this reason, it is possible to confirm the storage of the locking projection in the recess by water leakage, and even if the storage state of the locking projection in the recess is not directly visible from the outer surface side of the shower head, it can be determined by water leakage. The head portion and the grip portion can be easily reconnected so as to be stored in the proper storage position.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, a shower head 1 according to an embodiment has a head portion 2 that causes raw water NW or purified water CW to flow out, and a grip portion that holds the head portion 2. 18.
[0014]
The head portion 2 of the shower head 1 includes a water switching valve 5 covered with an upper cover 3 and a lower cover 4. Each of the covers 3 and 4, together with the cover 19 on the grip portion 18 side, prevents the heat from being transmitted to the user even if hot water flows in the connecting pipe 20 or the valve chamber 7 which will be described later. 7 is provided with a predetermined gap.
[0015]
The water switching valve 5 adjusts the outflow form of the raw water NW and the purified water CW by pressing the three operation buttons 10, 11, and 12 protruding from the upper cover 3. Incidentally, in the case of the embodiment, if the operation button 10 is pressed, the purified water CW is discharged straight, if the operation button 11 is pressed, the raw water NW is showered, and if the operation button 12 is pressed, the raw water NW. Can be discharged straight. The purified water CW is formed by the raw water NW passing through a purifier 22 in the cartridge 21 described later. Further, since this purified water W causes pressure loss due to passing through the purifier 22 and the shower water cannot be smoothly discharged, the water switching valve 5 of the embodiment is configured such that the shower water discharge of the purified water CW cannot be performed. ing.
[0016]
Further, the water switching valve 5 includes a valve chamber 7 in which various valve mechanisms (not shown) are operated by operating the buttons 10, 11, and 12, a nipple portion 21 a of the connection pipe 20 and the cartridge 21, and a valve. A connector 6 that connects the chamber 7 is provided. The valve chamber 7 includes an upper case 8 that constitutes the outer wall on the upper side, and a lower case 9 that constitutes the outer wall on the lower side. The connector 6 is configured to allow the raw water NW and the purified water CW from the nipple portion 21 a of the cartridge 21 to flow into the valve chamber 7, and the substantially cylindrical nipple portion 8 a extending from the upper case 8 to the grip portion 18 side. Combined with. The upper end side of the lower case 9 is formed in a substantially cylindrical shape, and the lower end portion of the substantially cylindrical shape extending to the lower case 9 side of the upper case 8 is externally fitted to ensure water tightness. The lower end side of the lower case 9 is the water spray plate 13. The outer peripheral side cylinder portion 13c is externally secured to ensure water tightness. The lower case 9 and the outer peripheral side cylinder portion 13c are formed with corresponding female screws and male screws, and are screw-coupled to each other.
[0017]
The water spray plate 13 is formed in a substantially disc shape having a circular opening 13b in the center, and a cylindrical outer cylinder portion 13c extending upward on the outer peripheral side, and a cylindrical inner peripheral side extending downward from the periphery of the opening 13b. And a cylindrical portion 13d. A large number of small-diameter sprinkling holes 13a are formed through the upper and lower surfaces between the outer peripheral side cylindrical portion 13c and the inner peripheral side cylindrical portion 13d. Moreover, the foamer 14 is arrange | positioned in the inner peripheral side cylinder part 13d. And this watering board 13 makes the water which flowed out from the lower case 9 to the arrangement | positioning area | region of the watering hole 13a between the inner peripheral side of the outer peripheral side cylinder part 13c, and the outer peripheral side of the inner peripheral side cylinder part 13d. The water will be discharged through the shower. In addition, the water spray plate 13 causes the water discharged from the lower case 9 to the arrangement region of the inner peripheral side opening 13b of the inner peripheral side cylindrical portion 13d to be discharged straight through the foaming device 14.
[0018]
2 is a display board for displaying the replacement time of the cartridge 21. The display plate 15 is formed in a substantially half-cylindrical shape, and is rotated between the lower end portion of the upper case 8 and the outer peripheral surface of the outer peripheral side cylindrical portion 13c of the water spray plate 13 and the inner peripheral surface of the lower cover 8, and It is arranged so that it can be stopped. And the display board 15 displays the number of months of 12 months according to one year on the outer peripheral surface so that the predetermined number of months can be displayed from the display window 3a of the upper cover 3 as shown in FIG. ,It is configured.
[0019]
The grip portion 18 of the shower head 1 incorporates a replaceable cartridge 21 with a purifying agent 22 for purifying the raw water NW. A nipple portion 21 a for allowing the purified water CW to flow out is disposed at the upper end of the cartridge 21, and a cylindrical connection pipe 20 is disposed around the cartridge 21. The base portion side of the connection pipe 20 is connected to a hose (not shown), and this hose is connected to a water supply tool (not shown) that switches between water and hot water. A cylindrical cover 19 exposed on the outer peripheral side of the shower head 1 is disposed around the connection pipe 20. The raw water NW flows between the inner peripheral surface of the connecting pipe 20 and the outer peripheral surface of the cartridge 21 so as to flow to the inlet side of the raw water NW (not shown) in the nipple portion 8 a of the upper case 8.
[0020]
And in the connection structure of the head part 2 and the grip part 18 of the embodiment, a substantially cylindrical projection-side connecting cylinder part 24 is formed at the tip part 8b at the lower end side of the nipple part 8a of the upper case 8 in the head part 2. A substantially cylindrical groove-side connecting cylinder part 28 is formed at the tip 20a on the upper end side of the connecting pipe 20 in the grip part 18, and the protrusion-side connecting cylinder part 24 is inserted into the groove-side connecting cylinder part 28. The cylindrical portions 24 and 28 are connected by being relatively rotated in the circumferential direction.
[0021]
As shown in FIGS. 3 and 4, the projection-side connecting cylinder portion 24 is provided with two locking projections 25 and 25 at substantially point-symmetrical positions on the outer peripheral surface, and the groove-side connecting cylinder portion 28 includes Two connecting grooves 29 and 30 are disposed at substantially point-symmetrical positions on the inner peripheral surface. Each of the connecting grooves 29 and 30 extends from the end surface of the connecting tube portion 28 to insert the locking protrusions 25 and 25 and extends from the tip of the inserting groove 31 in the circumferential direction of the tube portion 28. And a locking groove 32 that locks the locking protrusions 25 and 25.
[0022]
The distal end side of each of the locking grooves 32 and 32 away from the insertion groove 31 is a storage position 33 of the locking projections 25 and 25 when the cylindrical portions 24 and 28 are connected to each other. Further, between the storage position 33 and the insertion groove 31 in each of the locking grooves 32 and 32, a locking is provided on the peripheral wall 35 on the side of the protrusion-side connecting cylinder part 24 from the groove side connecting cylinder part 28, respectively. Recesses 36 and 37 that can accommodate the protrusions 25 are formed. The concave portion 36 communicates with the insertion groove 31 in the circumferential direction of the cylindrical portion 28, and the concave portion 37 is provided with a partition wall 38 on the insertion groove 31 side in the circumferential direction of the cylindrical portion 28. A length dimension L0 along the circumferential direction of the cylindrical portion 28 of the recess 37 is set slightly larger than a length dimension L1 along the circumferential direction of the cylindrical portion 24 at the locking projection 25 corresponding to the connecting groove 30. ing. Furthermore, a through hole 39 is formed in each of the connecting grooves 29 and 30 so as to penetrate the inner and outer circumferences of the cylindrical portion 28. In the case of the embodiment, the through holes 39 of the connection grooves 29 and 30 are formed in substantially the entire area of the locking groove 32 including the recesses 36 and 37, respectively.
[0023]
Further, in the case of the embodiment, on the outer peripheral surface of the projection-side connecting cylinder portion 24, as shown in FIGS. A concave groove 24a is formed along the direction, and a seal ring 26 is disposed in the concave groove 24a. As shown in FIGS. 5 and 6, the seal portion 27 of the seal ring 26 when the cylindrical portions 24 and 28 are connected is a groove-side connecting cylinder of the projection-side connecting cylindrical portion 24 in the locking groove 32 of each connecting groove 29 and 30. It is set so as to be arranged on the periphery on the insertion direction side to the portion 28. The seal portion 27 of the seal ring 27 when the connecting tube portion 24 is moved relatively away from the connecting tube portion 28 and the locking protrusions 25 are accommodated in the recesses 36 and 37 is formed in the locking groove 32. Is set to be placed in
[0024]
3 is a locking ring for connecting the connector 6 to the nipple portion 8a of the upper case 8, and a locking claw (not shown) of the connector 6 is engaged with the locking ring 8c. It will be stopped.
[0025]
Further, in the shower head 1 of this embodiment, the connection between the head portion 2 and the grip portion 18 is released when the cartridge 21 provided with the cleaning agent 22 is replaced, and when the cartridge 21 is replaced, In the reverse operation, with the connector 6 assembled to the nipple portion 8a, the cylindrical portions 24 and 28 are relatively rotated, and the cylindrical portion 24 is pulled out from the cylindrical portion 28, so that the nipple portion 8a is removed from the connecting pipe 20. Remove and remove the used cartridge 21 from the upper end side of the connection pipe 20, insert a new cartridge 21 into the connection pipe 20, and bayonet-connect the nipple portion 8 a to the connection pipe 20. Can be done. When the cartridge 21 is replaced, the upper and lower covers 3 and 4 are detached from the cover 19 together with the display plate 15 and the water spray plate 13 while being attached to the valve chamber 7 side.
[0026]
In the connection structure of the embodiment, the locking protrusions 25 of the protrusion-side connection cylinder part 24 on the head part 2 side are inserted into the insertion grooves 31 of the connection grooves 29 and 30 in the groove-side connection cylinder part 28 on the grip part 18 side. Further, as shown in FIGS. 5 and 6, the locking projections 25 are moved to the storage positions 33 of the locking grooves 32, and the protrusion-side / groove-side connecting cylindrical portions 24 and 28 are circumferentially moved (see FIG. 3). In the state shown in FIG. 2, the head part 2 of the shower head 1 and the grip part 18 can be connected by rotating the connecting cylinder part 24 relative to the connecting cylinder part 28 in the clockwise direction. . That is, since the head portion 2 and the grip portion 18 can be connected by so-called bayonet coupling, both the cylindrical portions 24 and 28 can be easily connected. Therefore, the exchange work etc. which replace the exchangeable cleaning agent built in shower head 1 become easy.
[0027]
Further, in the coupling structure of the embodiment, the relative rotation between the projection side coupling cylinder part 24 and the groove side coupling cylinder part 28 is normally prevented by the frictional resistance of the seal ring 26 fixed to the projection side coupling cylinder part 24. However, if the head part 2 is erroneously operated or the head part 2 is accidentally touched to change the direction of the water NW / CW to be discharged, the projection-side connecting cylinder part 24 becomes the groove-side connecting cylinder part 28. So that the projection-side connecting cylinder part 24 and the groove-side connecting cylinder part 28 are separated from each other even if they rotate relatively with respect to the groove-side connecting cylinder part 28 so that the water NW · Since the water pressure of CW is received, each latching protrusion 25 is accommodated in the recesses 36 and 37. As shown in FIG. 7, the partition wall 38 is disposed on the insertion groove 31 side on the concave portion 37 side, and the locking protrusion 25 accommodated in the concave portion 37 cannot move to the insertion groove 31 side. The locking projection 25 housed on the concave portion 36 side cannot move to the insertion groove 31 side, and as a result, the relative rotation between the projection side connecting tube portion 24 and the groove side connecting tube portion 28 stops. And if each latching protrusion 25 is accommodated in the recessed part 36 * 37, the water pressure of the water NW * CW in the shower head 1 in the direction which the protrusion side connection cylinder part 24 and the groove side connection cylinder part 28 leave | separate mutually. Therefore, detachment of the locking projection 25 from the concave portion 37 is prevented.
[0028]
Therefore, in the connection structure of the head part 2 and the grip part 18 of the shower head 1 according to the embodiment, even if the shower head 1 is erroneously rotated, both of them can be prevented from coming off.
[0029]
And in the connection structure of embodiment, the groove side connection cylinder part 28 is provided with the through-hole 39 which penetrates each connection groove | channel 29 * 30 to inner and outer periphery. Therefore, processing of the insertion groove 31 and the locking groove 32 is facilitated.
[0030]
In the embodiment, when the cylindrical portions 24 and 28 are connected, as shown in FIGS. 5 and 6, in the vicinity of the periphery of the peripheral wall 34 on the opposite side of the peripheral wall 35 provided with the convex portions 36 and 37 in the locking groove 32, A seal portion 27 of a seal ring 26 as a sealing material fixed to the projection side connecting cylinder portion 24 is disposed, and the seal portion 27 is connected to the groove side when the locking projection 25 is stored in the recesses 36 and 37. The seal ring 26 is configured to be moved relative to the cylindrical portion 28 and disposed in the region of the locking groove 32 so that the water tightness of the seal ring 26 is broken. That is, when the locking projections 25 are stored in the recesses 36 and 37, as shown in FIG. 7, the water tightness of the seal ring 26 is broken, and the water NW / CW on the inner peripheral side of the groove-side connecting tube portion 28 is broken. However, it leaks to the outer peripheral side of the groove-side connecting cylinder portion 28 through the insertion groove 31 and the locking groove 32, and further, as shown in FIG. After that, it leaks out of the shower head 1. For this reason, since the storage of each locking projection 25 in the recesses 36 and 37 can be confirmed by water leakage, the storage state of each locking projection 25 in the recesses 36 and 37 cannot be directly seen from the outer surface side of the shower head 1. In both cases, the head portion 2 and the grip portion 18 can be easily connected to each other so that it can be determined by water leakage and stored in the appropriate storage position 33 of the locking projection 25.
[0031]
In the embodiment, the projection-side connecting cylinder portion 24 is provided on the head portion 2 side, and the groove-side connecting cylinder portion 28 is provided on the grip portion 18 side. However, as shown in FIG. The groove side connecting cylinder part 28 may be provided on the side, and the protrusion side connecting cylinder part 24 inserted into the groove side connecting cylinder part 28 may be provided on the grip part 18 side.
[0032]
In the embodiment, the locking projection 25 is provided on the outer peripheral surface of the projection-side connecting cylinder portion 24, and the insertion groove 31 and the locking groove 32 having the recess 37 are provided on the inner peripheral surface of the groove-side connecting cylinder portion 28. As shown in FIG. 10, as shown in FIG. 10, the projection-side connecting cylindrical portion 24 </ b> A having the locking protrusion 25 on the inner peripheral surface, and the locking groove 32 having the insertion groove 31 and the concave portion 37 on the outer peripheral surface, The groove-side connecting cylinder part 28A to be inserted into the projection-side connecting cylinder part 24A may be disposed on the head part 2 side or the grip part 18 side, and may be so-called bayonet-coupled.
[0033]
Furthermore, in the embodiment, two locking projections 25 are provided on the projection-side connecting tube portion 24, and two connecting grooves 29 and 30 for locking the groove-side connecting tube portion 28 by inserting each locking projection 25 are provided. Although the case where it provided was shown, the projection side connection cylinder part 24 is provided with one or more locking protrusions 25, and the groove side connection cylinder part 28 is provided with a corresponding number of connection grooves 20 and 30. May be. Then, a recess 37 having a partition wall 38 may be provided in at least one locking groove 32.
[0034]
Furthermore, in the embodiment, the case where the through holes 39 penetrating the inner and outer peripheries of the groove-side connecting cylindrical portion 28 are arranged in substantially the entire area of the locking groove 32 is shown, but as shown in FIGS. A through hole 39 may be provided in a part of the locking groove 32 or a part of the insertion hole 31.
[0035]
In the connecting structure shown in FIGS. 9 and 10, the sealing material fixed to the protrusion-side connecting tube portions 24 and 24 </ b> A is provided on the peripheral wall 34 opposite to the peripheral wall 35 provided with the recess 37 in the locking groove 32. The sealing portion is disposed in the region of the locking groove 32 and the insertion groove 31 by moving relative to the groove side connecting cylindrical portions 28 and 28A when the locking protrusion 25 is stored in the recess 37. If the sealing member is configured so that the water tightness of the sealing member is broken, the water tightness of the sealing member is broken when the locking protrusion 25 is stored in the recess 37, and the groove side connecting cylinder portions 28 and 28A are not damaged. Since water on the circumferential side leaks through the through-hole 39, further through the insertion groove 31 and the locking groove 32, to the outer peripheral side of the groove-side connecting cylindrical portions 28 and 28A, and further to the outside of the shower head, Check that the locking protrusion 25 is housed in the recess 37 by water leakage. Can.
[Brief description of the drawings]
FIG. 1 is a partial perspective view showing a shower head according to an embodiment of the present invention.
FIG. 2 is a schematic longitudinal sectional view of the same embodiment.
FIG. 3 is a schematic exploded partial perspective view showing the main part of the embodiment.
4 is a schematic cross-sectional view of the projection-side / groove-side connecting tube portion of the embodiment in a completed connection state corresponding to the IV-IV portion in FIG. 5;
FIG. 5 is a schematic longitudinal sectional view showing a state in which the protrusion side and groove side connecting cylindrical portions of the embodiment are completely connected to each other, and shows a state in which the locking groove and the locking protrusion on the recess side having a partition wall are locked. Show.
FIG. 6 is a schematic side view showing a state in which the protrusion-side and groove-side connecting tube portions of the embodiment are completely connected to each other, and showing a state in which the recess-side locking groove and the locking protrusion are not provided with a partition wall; .
FIG. 7 is a schematic longitudinal sectional view showing a state in which the locking projection of the projection side connecting cylinder portion of the same embodiment is housed in a recess provided with a partition wall in the groove side connecting cylinder portion.
FIG. 8 is a view showing a water leakage state of the shower head of the embodiment.
FIG. 9 is a schematic exploded partial perspective view showing a main part in a modified example of the embodiment.
FIG. 10 is a schematic exploded partial perspective view showing a main part in another modified example of the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Shower head, 2 ... Head part, 18 ... Grip part, 24 * 24A ... Projection side connection cylinder part, 25 ... Locking protrusion, 28 * 28A ... Groove side connection cylinder part, 31 ... Insertion groove, 32 ... Locking Groove, 35 ... peripheral wall, 36, 37 ... recess, 38 ... partition, 39 ... through hole.

Claims

By connecting the connection parts of the shower head part and the grip part to each other as a substantially cylindrical connection cylinder part, by inserting one connection cylinder part into the other connection cylinder part and rotating it relatively in the circumferential direction. It is a connecting structure of the head part and the grip part of the shower head to be connected,
An insertion groove that is provided with a locking projection on one outer peripheral surface side or inner peripheral surface side that faces each other at the time of connection in the connecting cylinder portions, and that inserts the locking projection on the other inner peripheral surface side or outer peripheral surface side; A locking groove extending in the circumferential direction from the insertion groove and locking the locking projection, and
The distal end side of the locking groove away from the insertion groove is set as the storage position of the locking protrusion at the time of connection,
The groove-side connecting cylinder portion provided with the locking groove is between the storage position in the locking groove and the insertion groove, and the groove-side connection of the protrusion-side connecting cylinder portion provided with the locking protrusion. A head part and a grip part of a shower head, characterized in that the peripheral wall on the side in the pulling direction from the cylindrical part has a recess having a partition wall between the insertion groove and capable of accommodating the locking projection. Connection structure.

The connecting structure between the head portion and the grip portion of the shower head according to claim 1, wherein at least a part of the insertion groove or the locking groove penetrates an inner and outer periphery of the groove side connecting cylinder portion. .