JP2004360183A

JP2004360183A - Piping fitting

Info

Publication number: JP2004360183A
Application number: JP2003155944A
Authority: JP
Inventors: Masanori Adachi; 正範安達
Original assignee: KVK Corp
Current assignee: KVK Corp
Priority date: 2003-05-30
Filing date: 2003-05-30
Publication date: 2004-12-24

Abstract

【課題】熟練度を必要とすることなく、継手本体からの給水栓の突出量、すなわち取付面からの給水栓の突出量を所定値に容易に定めることができ、配管と給水栓本体との接続作業を容易にしたり、給水栓本体の向きを所望の方向とすることのできる配管継手を提供すること。
【解決手段】取付面２の裏側に引き回された配管と給水栓とを接続するために、配管の端末に接続されるとともに取付面２に固定される継手本体１０と、給水栓がねじ込まれるとともに継手本体１０内に回動自在に装着される円筒状の接続部材３０とが備えられる配管継手１において、接続部材３０の外周面には回動規制用の規制凸部４６を設け、継手本体１０の内周面には、接続部材３０の規制凸部４６が係止可能な規制凸部２５を設けた。
【選択図】図１A projecting amount of a water tap from a fitting body, that is, a projecting amount of a water tap from a mounting surface can be easily determined to a predetermined value without requiring skill, and a pipe and a water tap body can be easily defined. Provided is a pipe joint that facilitates connection work and allows a water tap main body to be oriented in a desired direction.
In order to connect a pipe and a water tap which are routed to the rear side of a mounting face, a fitting body connected to an end of the pipe and fixed to the mounting face, and a water tap are screwed. In addition, in the pipe joint 1 provided with a cylindrical connecting member 30 rotatably mounted in the joint main body 10, a restricting convex portion 46 for restricting rotation is provided on the outer peripheral surface of the connecting member 30. On the inner peripheral surface of 10, there is provided a regulating protrusion 25 which can be locked by the regulating protrusion 46 of the connection member 30.
[Selection diagram] Fig. 1

Description

【０００１】
【発明の属する技術分野】
本発明は、給水配管や給湯配管等の配管の端末に接続される継手本体と、給水栓とを接続する配管継手に関する。
【０００２】
【従来の技術】
従来、壁面などの取付面の裏側に引き回された配管と給水栓とを接続するために、配管の端末に接続されるとともに取付面に固定される継手本体であって、この継手本体に給水栓を接続するためのねじ部を備えた種々の配管継手が用いられている。このような配管継手は、配管に継手本体が接続され、この継手本体が壁面に開口された取付穴を通してその先端側が壁面表側に露呈され、この継手本体先端側のねじ部に給水栓が接続されることにより、配管と給水栓とが接続されるものである。また、配管と給水栓の間にクランク継手を介して接続する場合もある。
【０００３】
例えば湯水混合水栓には、水が流入される水側接続部、湯が流入される湯側接続部がその本体にそれぞれ設けられているが、このような給水栓では、給水・給湯の両配管と水側・湯側の両接続部をそれぞれ接続するために、クランク継手を用いて接続することが多い。クランク継手はクランク状に折曲形成された継手であり、継手本体側に螺着される第１接続部と、この第１接続部の軸心に対してほぼ直角に折曲形成されるとともにその先端には第１接続部の軸心と同一で、反対方向に開口され給水栓本体に接続される接続口が形成された第２接続部が設けられているものである。このような場合には、継手本体にねじ込んだクランク継手を若干回転調節して、２つのクランク継手の接続口の間隔を給水栓本体の両接続部の間隔に合わせることとして２つのクランク継手の接続口と給水栓本体の両接続部との位置合わせが行えるようにされているものが多い。そしてこのような配管継手を用いた接続作業においては、まず、上記した２つのクランク継手の第１接続部を継手本体にそれぞれねじ込んでいき、次いで、ねじを締めきった位置から第１接続部の軸心回りにクランク継手を多少回転調節して、二つのクランク継手の接続口の間隔を給水栓本体の水側・湯側の接続部の間隔に合わせている。
【０００４】
ここで、上記のようなクランク継手と継手本体とは、継手本体の雌ねじを平行ねじとし、クランク継手の第１接続部の雄ねじをテーパねじとしており、クランク継手の第１接続部の雄ねじのテーパねじにシールテープを巻き付けて継手本体にねじ込むことで接続されていた（例えば、特許文献１参照。）。
【０００５】
【特許文献１】
特開２００２−１７３９６３号公報（００２１欄、図１）
【０００６】
【発明が解決しようとする課題】
上記のように従来の配管継手では、平行雌ねじにテーパ雄ねじをねじ込むことにより接続していたので、クランク継手を継手本体にねじ込むと平行雌ねじやテーパ雄ねじの加工のバラツキにより壁面などからのそれぞれのクランク継手の突出量が異なってしまい給水栓本体への接続が困難となるおそれがあった。一方、このような場合に２つのクランク継手の壁面などからの突出量を揃えるために、クランク継手の第１接続部のテーパ雄ねじに巻き付けるシールテープの巻き数を増やしたり、巻き付け位置を加減することにより、クランク継手のねじ込み量を調節していたが、シールテープの巻き数を増やしたり、巻き付け位置を加減したりするには高度な熟練度が必要とされ、配管と給水栓本体との接続作業の作業性が低下する要因となっていた。
【０００７】
また、例えば、突設される吐水口の向きを所望の方向とするなど給水栓本体の向きを変えることが望まれる給水栓であっても、従来の平行雌ねじにテーパ雄ねじをねじ込むことにより接続する配管継手では、ねじを締めきった状態で給水栓本体の向きが固定されてしまい、給水栓の利便性が損なわれる。。
【０００８】
本発明は上記した従来の配管継手の問題点を解消するものであり、熟練度を必要とすることなく、継手本体からの給水栓の突出量、すなわち取付面からの給水栓の突出量を所定値に容易に定めることができ、配管と給水栓本体との接続作業を容易にしたり、給水栓本体の向きを所望の方向とすることのできる配管継手を提供することを目的とする。
【０００９】
【課題を解決するための手段】
以上の課題を解決するために、本発明の採った手段を以下に説明する。本発明の配管継手は「壁面などの取付面の裏側に引き回された配管と給水栓とを接続するために、前記配管の端末に接続されるとともに前記取付面に固定される継手本体と、前記給水栓がねじ込まれるとともに前記継手本体内に回動自在に装着される円筒状の接続部材とが備えられる配管継手であって、前記接続部材の外周面には回動規制用の規制凸部が設けられるとともに、前記継手本体の内周面には、前記接続部材の前記規制凸部が係止可能な規制凸部が設けられたことを特徴とする配管継手。」（請求項１）である。
【００１０】
接続部材は、継手本体内に回動自在に装着されるとともに、互いの規制凸部が係止されて所定範囲（３６０°未満）内で回動されるに止まる。そして、給水栓を接続部材にねじ込んでいくと、当初は接続部材も給水栓とともに共回りするが、上記した接続部材の規制凸部が係止された後は接続部材の共回りが規制されて、給水栓は接続部材に徐々にねじ込まれて接続部材に対して螺進していくことになる。そして、給水栓が接続部材の雌ねじ奥端までねじ込まれる。この状態で、継手本体に対する給水栓のねじ込み方向における適切な位置決めがなされていることとなる。
【００１１】
このようにして、例えば給水配管側及び給湯配管側の継手本体と給水栓本体の間にそれぞれ給水栓の一例であるクランク継手がねじ込まれるような場合において、両クランク継手を給水栓本体の各接続部に接続するために、クランク継手の給水栓本体に接続される接続口の間隔を給水栓本体の接続部の間隔に合わせる必要がある。そのため、いずれか一方または両方のクランク継手を逆に回転させて調節することになるが、この際に、それまで継手本体の規制凸部によりクランク継手との共回りを規制されていた接続部材は、逆方向に回転していって再度その規制凸部が係止されるまでは、クランク継手と共回りすることとなる。よって、この共回りされている際には、接続部材に対するクランク継手ねじ込み量が変化することはない。したがって、接続部材に対するクランク継手のねじ込み方向における位置決めも変化することがない。よって、継手本体からのクランク継手の突出量、すなわち取付面からのクランク継手の突出量を所定値に容易に定めることができ、配管と給水栓本体との接続作業を容易とすることができる。
【００１２】
また、このような配管継手を用いて、例えば水のみを吐出する給水栓である単水栓を配管に接続する場合などには、上記のように、給水栓を接続部材の雌ねじ奥端までねじ込んで接続する。ここで、接続部材に対してねじ込んでいた給水栓を逆に回転させると、それまで継手本体の規制凸部により給水栓との共回りを規制されていた接続部材は、逆方向に回転していって再度その規制凸部が係止されるまでは、給水栓と共回りすることとなる。よって、規制凸部によって規制される所定範囲内において、接続部材を介して継手本体に接続される給水栓の向きを変えることができる。
【００１３】
また、上記請求項１の発明において、給水栓としてクランク継手を用いる配管継手としてもよい（請求項２）。
【００１４】
上記したように、湯水混合水栓の給水栓本体に配管継手を用いるような場合には、給水栓としてクランク継手を用いた配管継手を使用して、給水栓本体の２つの接続部の間隔に配管継手側の接続口の間隔を合わせる必要がある。このクランク継手を用いた配管継手に本発明を適用すると、上記のようにクランク継手の接続部材に対するねじ込み方向における位置決めを適切に行うことができるほか、このねじ込み方向における位置決めがなされた状態で、ねじ込んだクランク継手を回転調節することもできるので、給水栓本体の接続部の間隔に合わせる調整も極めて容易に行うことができ、接続作業を容易かつ正確に行うことができる。
【００１５】
また、「壁面などの取付面の裏側に引き回された配管と給水栓とを接続するために、前記配管の端末に接続されるとともに前記取付面に固定される継手本体と、前記給水栓が取付けられるとともに前記継手本体内に回動自在に装着されるクランク状の接続部材とが備えられたことを特徴とする配管継手。」（請求項３）とすることもできる。
【００１６】
上記したように、湯水混合水栓の給水栓本体に配管継手を用いるような場合には、クランク継手を用いて、給水栓本体の２つの接続部の間隔に配管継手側の接続口の間隔を合わせる必要がある。このような場合に、クランク状を成す接続部材を適用することによりクランク継手を介することなく直接給水栓本体を継手本体に接続することができる。この場合にも接続部材の回動軸方向における位置決めを行う必要がないほか、接続部材を回転調節することもできるので、給水栓本体の接続部の間隔に合わせる調整も極めて容易に行うことができ、接続作業を容易かつ正確に行うことができる。
【００１７】
また、上記した各発明において、接続部材と継手本体との間にシール部材が装着され、給水栓と接続部材との間にシール部材が装着されるようにすることもできる（請求項４）。
【００１８】
このようにシール部材を装着することにより、継手本体に対して回動自在に装着される接続部材と継手本体とが、接続部材が回動されても常に確実に水密されるとともに、接続部材と、接続部材にねじ込まれる給水栓水栓金具との水密も確実に行われる。特に、上記したように、本発明では接続部材に対する給水栓のねじ込み方向における位置決めを正確に行うことができるので、接続部材と給水栓との間に装着されたシール部材の潰れ具合を適切なものとすることが容易であり、シール部材の適切な潰しを容易に得ることができる。
【００１９】
【発明の実施の形態】
次に、本発明の配管継手の実施の形態を図を参考にして詳細に説明する。図１及び図２に示すように、本発明の配管継手１は、取付面２に固定される継手本体１０と、継手本体１０内に装着された接続部材３０と、接続部材３０にねじ込まれて固定される、本発明の給水栓の一例であるクランク継手５０を備えている。
【００２０】
取付面２には、取付穴３が穿設されており、この取付穴３に継手本体１０が挿通固定されている。継手本体１０は、略Ｌ字状に折曲形成された全体形状をしており、その一端側には、配管（図示省略）に接続される配管接続部１２が、他端側には、この配管接続部１２からほぼ直角に折曲形成されるとともにクランク継手５０が接続されるクランク継手接続部１４が設けられている。また、クランク継手接続部１４の外周面には雄ねじが刻設されている。クランク継手接続部１４の奥端寄りには、取付面２裏側の取付穴３周縁にシートパッキン４を介在して当接されるフランジ部１６が周設されており、シートパッキン４を介在して取付面１表側から雄ねじに螺着されるナット５とこのフランジ部１６とが協働して取付面１を狭持固定することにより、継手本体１０が取付面１に固定されている。また、クランク継手接続部１４の雄ねじにねじ込まれたナット５には、その固定用孔６に挿通されて取付面２にねじ込まれる皿付き木ねじ７が取り付けられ、給水栓本体８の操作ハンドル９の操作などにより伝わる応力やウォーターハンマなどによってもクランク継手接続部１４に螺着されたナット５が緩まないように設けられて、継手本体１０の取付面２への固定が一層強固となるように構成されている。
【００２１】
また、クランク継手接続部１４の内部奥端には、配管接続部１２内部よりも大径に形成されるとともに後述する接続部材３０の小径部３２よりも僅かに大径に形成された第１収容部１８が形成されており、配管接続部１２側の内周面との間に、接続部材３０の端面が係止される段部２０が形成されている。また、この収容部１８よりもクランク継手接続部１４先端側には、収容部１８よりもさらに大径に形成されるとともに接続部材３０の大径部３４よりも大径の内径に形成された第２収容部２２が設けられており、第１収容部１８との間に、接続部材３０の大径部３４が係止される段部２４が形成されている。そして、第２収容部２２の開口部寄りには、図１及び図３に示すように、接続部材３０の規制凸部４６に係止可能な位置に規制凸部２５が内方に向けて突設されている。また、クランク継手接続部１４の開口部近傍の内周面には、図４に示すＣリング２８が装着固定可能な周溝２６が周設されている。
【００２２】
次いで、接続部材３０について説明する。接続部材３０は、略円筒状の全体形状に形成されており、一端側が継手本体１０の第１収容部１８に収容される小径部３２と、他端側が第２収容部２２に収容される大径部３４とが備えられている。接続部材３０の小径部３２の端面は継手本体１０内の段部２０に係止され、また、小径部３２と大径部３４との段部３６は段部２４に係止される一方、大径部３４の端面は継手本体１０の周溝２６に装着されたＣリング２８に係止されて、接続部材３０が継手本体１０内にその軸心周りに回動自在に装着されている。
【００２３】
小径部３２の外周面には、第１収容部１８の内周面との水密を図るＯリング３８がそれぞれ装着された周溝４０が２つ周設されている。また、大径部３４の内部奥端には、後述するクランク継手５０の開口端面が位置する部位に、接続部材３０の軸心方向に凹設された周溝４２が形成されており、この周溝４２内に、接続部材３０内部とクランク継手５０との水密を図るパッキン４４が装着されている。また、大径部３４内周面には、クランク継手５０が螺着される雌ねじが刻設されている。この雌ねじは平行雌ねじである。
【００２４】
そして、図１及び図３に示すように、大径部３４の外周面には、接続部材３０が回動する際に継手本体１０の第２収容部２２内に突設された規制凸部２５に当接可能な規制凸部４６が外方に向けて突設されている。規制凸部２５を除く大径部３４の外径は、第２収容部２２の内径よりも小さく設けられて両者の間には継手本体１０内で接続部材３０が回動自在であるのに充分な隙間が設けられている。また図３に示すように、接続部材３０の軸心周り方向における規制凸部２５及び規制凸部４６の幅は、それぞれ接続部材３０の外周の約２００分の９に形成されており、接続部材３０が約３２７度の範囲内で回動自在となるように設けられている。また、図１に示すように、継手本体１０側の規制凸部２５は第２収容部２２奥端寄りにのみ形成され、一方、接続部材３０側の規制凸部４６は、大径部３４先端寄りにのみ形成されており、接続部材３０が継手本体１０の第２収容部２２に充分に押し込まれた状態でのみ規制凸部４６が規制凸部２５に係止されるように設けられている。
【００２５】
次いで、クランク継手５０について説明する。クランク継手５０は図１に示すように全体がクランク状に形成されており、接続部材３０に螺着される第１接続部５２と、第１接続部５２から第１接続部５２の軸心に対してほぼ直角に折曲形成されて連接される第２接続部５４と、第２接続部５４の先端に第１接続部の軸心と同一で、反対方向に開口され給水栓本体８側に接続される接続口５６とが備えられている。
【００２６】
第１接続部５２の外周面には平行雄ねじが刻設されており、接続部材３０の大径部３４内周面の雌ねじに螺着されている。また、第１接続部５２の開口先端面は、接続部材３０の周溝４２に装着されたパッキン４４と対向する位置に設けられ、第１接続部５２をねじ込んでいった際に、第１接続部５２の先端面によりパッキン４４が潰されるように設けられている。
【００２７】
また、接続部材３０に螺着された状態で外部に露呈する部位の第１接続部５２の外周面には、美観のために上記したナット５及び皿付き木ねじ７を被覆するカバー５８が係止される複数の突条６０が形成されている。カバー５８には第１接続部５２が挿通される挿通孔が備えられるとともに、この挿通孔から連設される円筒部６２が形成されている。そしてまた、円筒部６２の内周面には、突条６０が係止可能な突条６４が複数形成されており、この突条６４が第１接続部５２の突条６０に係止されて、カバー５８が第１接続部５２に対して位置決めされるように設けられている。また、第１接続部５２の内部には、止水機能付きの流量調節弁６１とストレーナ６３が内蔵されている。
【００２８】
そして、第１接続部５２には、第１接続部５２の軸心とほぼ直角に折曲形成された第２接続部５４が連設され、この第２接続部５４の先端には、給水栓本体８の各接続部６６が接続される接続口５６が第１接続部５２の軸心方向に開口して設けられている。
【００２９】
次いで、この配管継手１を用いた配管と給水栓本体８との接続方法について説明する。まず、継手本体１０内に接続部材３０を装着する。継手本体１０側の規制凸部２５と接続配管３０側の規制凸部４６とが干渉しないように、図３のように両者の位置をずらした状態で接続部材３０を継手本体１０内に挿入し、小径部３２が第１収容部１８の段部２０に当接するまで押し込む。なお、配管継手１の出荷時に、あらかじめ接続部材３０を継手本体１０内に装着しておいても良い。次いで、継手本体１０を取付面２に固定する。継手本体１０のクランク継手接続部１４を取付穴３に挿通し、シートパッキン４を間に介在させたフランジ部１６を取付穴３周縁に当接させる。そしてこの状態で、シートパッキン４を間に介在させて取付面２表側からクランク継手接続部１４にナット５を螺着して、フランジ部１６とナット５により取付面２を狭持固定させて、継手本体１０を取付面２に固定する。さらにナット５の固定用孔６から皿付き木ねじ７を取付面２にねじ込んでナット５の回り止めを行う。
【００３０】
次いで、クランク継手５０を接続部材３０に螺着する。まず、カバー５８を第１接続部５２の奥端まで挿通させておき、第１接続部５２を大径部３４内にねじ込む。接続部材３０は、上記の通り継手本体１０に対して回動自在に装着されているので、このねじ込みの際には、当初は接続部材３０も第１接続部５２とともに共回りしてしまうが、図３に示すように接続部材３０側の規制凸部４６が継手本体１０側の規制凸部２５に当接するまで回動された後は、接続部材３０の回動が規制されて、第１接続部５２が徐々にねじ込まれて接続部材３０に対して螺進していく。そして、第１接続部５２が大径部３４の雌ねじ奥端までねじ込まれていくと、大径部３４奥端に周溝４０に装着されたパッキン４４が適度に潰れ第１接続部５２と接続部材３０との水密が充分に行える状態にまで第１接続部５２がねじ込まれることとなる。湯水混合水栓の給水栓本体８に関しては、ここまでの接続作業を給水配管側及び給湯配管側の２つの配管継手１について行う。この状態で、接続部材３０を介して継手本体１０に対するクランク継手５０の第１接続部５２の軸心方向（ねじ込み方向）、すなわち取付面２に対する適切な位置決めがなされていることとなる。また、小径部３２外周面と継手本体１０内周面との間は、常時Ｏリング３８により水密がなされている。
【００３１】
そして、図２に示すＢ矢印方向において、二つのクランク継手５０の接続口５６の間隔を給水栓本体８の接続部６６の間隔に合わせる。この間隔調節のためには、いずれか一方または両方のクランク継手５０の第２接続部５４をねじ込み方向と逆に回転させて間隔調節を行う。この際に、それまで規制凸部４６が規制凸部２５に係止されることにより回動が規制されていた接続部材３０は、規制凸部２５，４６が離隔することによって、再度逆回りにて規制凸部４６が規制凸部２５に係止されるまでは、クランク継手５０とともに共回りすることとなる。このようにしてクランク継手５０の接続口５６の間隔を調節することができる。この時、接続部材３０が共回りされている間は、接続部材３０に対するクランク継手５０のねじ込み量が変化することはない。したがって、接続部材３０の大径部３４奥端のパッキン４４の潰れ具合が変化することがなく、依然充分なシールを確保できる。そしてこれと同時に、Ｃリング２８等によって継手本体１０及び取付面２に対して位置決めされている接続部材３０に対して、クランク継手５０の位置決め（クランク継手５０のねじ込み方向における位置決め）も変化することがない。よって、取付面２に対するクランク継手５０の突出量が２つのクランク継手５０において異なってしまうことが無いので、図２のＣ矢印方向において２つの接続口５６の位置を揃えて、給水栓本体８の各接続部６６への接続口５６の接続作業を円滑に行うことができる。そして最後に、カバー５８の円筒部６２内周面の突条６４が第１接続部５２の突条６０を順次乗り越えるように円筒部６２をスライドさせ、カバー５８の外周端が取付面２に押し付けられるようにしてナット５等を被覆させる。なお、このカバー５８のスライド作業は、上記したクランク継手５０のねじ込み作業の直後に行ってもよい。
【００３２】
なお、上記実施の形態は例示でありこれに限られることなく、本発明の趣旨の範囲内で種々の変更が可能である。例えば、各規制凸部は上記した形状・幅などに限定されることはなく、接続部材が継手本体に対して所定の範囲で回動可能となり、所定範囲外となるときは回動が規制されるものであれば良い。また、規制凸部を接続部材や継手本体に後付けする別部材としても良い。
【００３３】
次いで、本発明の第２の実施の形態について説明する。本実施の形態は、給水栓としての単水栓と配管とを接続する配管継手であって、単水栓をそのまま配管継手にねじ込む例である。なお、以下の説明において、第１の実施の形態と共通する構成については、同一の符号を付して説明を省略する。図５に示すように、この配管継手１’には、単水栓８’を接続する。単水栓８’は給水配管（図示省略）に配管継手１’を介して接続されるものであり、単水栓８’側面から斜め上方に突設された吐水口７０に、ホース（図示省略）を接続する接続金具７２を取り付けたものであり、散水栓として用いられる。また、単水栓８’の下部には平行雄ねじが刻設された接続部７８が設けられている。
【００３４】
この配管継手１’においては、単水栓８’の接続部７８を接続部材３０の平行雌ねじに直接ねじ込んで単水栓８’を配管継手１’に接続固定するとともに給水配管に接続する。
【００３５】
このようにして配管継手１’に接続固定された単水栓８’は、その接続金具７２に接続されたホースを引き回すのに、規制凸部４６が規制凸部２５により規制されない範囲内において単水栓８’のねじ込み方向回りに回動可能となり、使用の最中に様々な方向にホースが引き回されてもホースの接続部付近が折れ曲がり難く、給水栓としての単水栓の利便性が高まる。また、この際にも、Ｏリング３８、パッキン４４により配管継手１’各接続部の水密が確実になされる。なお、単水栓８’を配管継手１’に接続固定後、吐水口７０の向きを所望の方向に向けてその後はその向きを変更する必要がない場合には、給水栓本体８’下部に設けられたフランジ部８０などを取付面２に固定する手段を別途設けて、以降給水栓本体８’の向きが変更されないようにすることもできる。
【００３６】
次いで本発明の第３の実施の形態について説明する。本実施の形態は、接続部材をクランク状に形成したものであり、給水栓本体を接続するクランク継手の代わりにそのまま用いることのできる接続部材を利用するものである。図６に示すように、この配管継手１’の継手本体１０に接続部材３０’が挿嵌接続されている。接続部材３０’は全体がクランク状に形成されており、継手本体１０に挿入される第１接続部５２と、第１接続部５２から第１接続部５２の軸心に対してほぼ直角に折曲形成されて連接される第２接続部５４と、第２接続部５４の先端に第１接続部の軸心と同一で、反対方向に開口され給水栓本体８側に接続される接続口５６とが備えられている。接続部材３０’の第１接続部５２は略円筒状に設けられるとともに、その先端に小径部３２’が形成され、この小径部３２’の奥端側に大径部３４’が形成されている。そして、小径部３２’は継手本体１０の第１収容部１８内に、大径部３４’は第２収容部２２内に収容されている。また、小径部３２’の先端面は継手本体１０内の段部２０に係止されるとともに小径部３２’と大径部３４’との段部３６は段部２４に係止される一方、大径部３４’には周溝９０が設けられていて、周溝９０には２つに分割された割りリング９１が装着されている。この割りリング９１の端面が、継手本体１０の周溝２６に装着されたＣリング２８に係止されて抜け止めされている。なお、継手本体１０の周溝２６の奥側に割りリング９１が収容される収容部９２が形成されている。このようにして、接続部材３０の第１接続部５２が継手本体１０内にその軸心周りに回動自在に装着されている。また、小径部３２’の外周面には、第１収容部１８の内周面との水密を図るＯリング３８がそれぞれ装着された周溝４０が２つ周設されている。また、図示は省略するが、給水栓本体８側と接続される接続口５６には、給水栓本体８の接続部６６との間に介在されるパッキンが装着されており、接続部材３０’と給水栓本体８との水密が図られている。なお、本実施の形態では第１、第２の実施の形態とは異なり、接続部材３０’や継手本体１０に規制凸部は設けられていないので、接続部材３０’は第１接続部５２の軸回りに３６０度を越えて自由に回転させることができる。
【００３７】
【発明の効果】
本発明は上記のように、配管の端末に接続されるとともに取付面に固定される継手本体と、給水栓がねじ込まれるとともに継手本体内に回動自在に装着される円筒状の接続部材とが備えられる配管継手であって、接続部材の外周面には回動規制用の規制凸部が設けられるとともに、継手本体の内周面には、接続部材の規制凸部が係止可能な規制凸部が設けられる構成（請求項１）を採用することにより、熟練度を必要とすることなく、継手本体からのクランク継手の突出量を所定値に容易に定めることができ、配管と給水栓本体との接続作業を容易とすることができる。また、上記請求項１の発明において、給水栓としてクランク継手を用いること（請求項２）により、クランク継手の接続部材に対するねじ込み方向における位置決めを適切に行うことができるほか、このねじ込み方向における位置決めがなされた状態で、ねじ込んだクランク継手を回転調節することもできるので、給水栓本体の接続部の間隔に合わせる調整も極めて容易に行うことができる。また、配管の端末に接続されるとともに取付面に固定される継手本体と、給水栓が取付けられるとともに継手本体内に回動自在に装着されるクランク状の接続部材とが備えられる構成（請求項３）を採用することにより、クランク継手を介することなく直接給水栓本体を継手本体に接続することができ、また、上記と同様に、熟練度を必要とすることなく継手本体からのクランク継手の突出量を所定値に容易に定めることができ、配管と給水栓本体との接続作業を容易とすることができる。また、これらの各発明において、接続部材と継手本体との間にシール部材が装着され、給水栓と接続部材との間にシール部材が装着されるようにすることにより（請求項４）、継手本体と接続部材との水密、接続部材と給水栓との水密を容易・確実に行うことができる。
【図面の簡単な説明】
【図１】本発明の配管継手の側面視一部破断面図である。
【図２】配管継手及び給水栓本体の平面図である。
【図３】図１のＡ−Ａ線における継手本体及び接続部材の縦断面図である。
【図４】Ｃリングの正面図である。
【図５】本発明の別の配管継手の側面視一部破断面図である。
【図６】本発明のさらに別の配管継手の側面視一部破断面図である。
【符号の説明】
１，１’；配管継手、２；取付面、３；取付穴、４；シートパッキン、５；ナット、６；固定用孔、７；皿付き木ねじ、８；給水栓本体、８’；単水栓、９；操作ハンドル、１０；継手本体、１２；配管接続部、１４；クランク継手接続部、１６；フランジ部、１８；第１収容部、２０；段部、２２；第２収容部、２４；段部、２５；規制凸部、２６；周溝、２８；Ｃリング、３０；接続部材、３２；小径部、３４；大径部、３６；段部、３８；Ｏリング、４０；周溝、４２；周溝、４４；パッキン、４６；規制凸部、５０；クランク継手、５２；第１接続部、５４；第２接続部、５６；接続口、５８；カバー、６０；突条、６１；流量調節弁、６２；円筒部、６３；ストレーナ、６４；突条、６６；接続部、７０；吐水口、７２：接続金具、７６；ナット、７８；接続部、８０；フランジ部、９０；周溝、９１；割りリング、９２；収容部。[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a pipe joint for connecting a water tap to a joint body connected to a terminal of a pipe such as a water supply pipe or a hot water supply pipe.
[0002]
[Prior art]
Conventionally, a joint body connected to the end of the pipe and fixed to the mounting surface for connecting a pipe and a water tap provided on the back side of the mounting surface such as a wall surface. Various piping joints having a thread for connecting a plug are used. In such a pipe joint, a joint main body is connected to the pipe, the distal end side of the joint main body is exposed to the front side of the wall surface through a mounting hole opened in the wall surface, and a water tap is connected to a threaded portion on the distal end side of the joint main body. By doing so, the pipe and the water tap are connected. In some cases, a connection is made between a pipe and a water tap via a crank joint.
[0003]
For example, a hot-water mixing faucet is provided with a water-side connecting portion into which water flows in and a hot-water-side connecting portion into which hot water flows, respectively, in such a main body. In order to connect the pipe and both the water-side and hot-water-side connection parts, respectively, the connection is often made using a crank joint. The crank joint is a joint bent and formed into a crank shape. The first joint is screwed to the joint body side, and the first joint is bent substantially at right angles to the axis of the first joint. The distal end is provided with a second connecting portion which is the same as the axis of the first connecting portion and which is opened in the opposite direction and has a connecting port connected to the hydrant body. In such a case, the crank joint screwed into the joint main body is slightly rotated to adjust the interval between the connection ports of the two crank joints to the interval between the two connection portions of the hydrant main body, thereby connecting the two crank joints. In many cases, the position of the mouth and the connection portion of the water tap main body can be adjusted. In the connection work using such a pipe joint, first, the first connection portions of the two crank joints described above are screwed into the joint body, respectively, and then the first connection portion is tightened from the position where the screw is fully tightened. The crank joint is slightly rotated around the axis to adjust the distance between the connection ports of the two crank joints to the distance between the water-side and hot-water-side connection portions of the hydrant body.
[0004]
Here, the crank joint and the joint body as described above are such that the female screw of the joint body is a parallel thread, the male screw of the first connection part of the crank joint is a taper screw, and the taper of the male screw of the first connection part of the crank joint is The connection is made by winding a seal tape around the screw and screwing it into the joint body (for example, see Patent Document 1).
[0005]
[Patent Document 1]
JP-A-2002-173963 (column 0021, FIG. 1)
[0006]
[Problems to be solved by the invention]
As described above, in conventional pipe joints, the connection was made by screwing a tapered male thread into the parallel female thread.Therefore, when the crank joint was screwed into the joint body, the variation in the processing of the parallel female thread and the tapered male thread caused each crank from the wall etc. There was a possibility that the amount of protrusion of the joint would be different, making it difficult to connect to the hydrant body. On the other hand, in such a case, in order to equalize the amount of protrusion of the two crank joints from the wall surface or the like, increase the number of turns of the seal tape wound around the tapered male screw of the first connection part of the crank joint, or adjust the winding position. However, to increase the number of turns of the seal tape or to adjust the winding position requires a high degree of skill, and the connection work between the pipe and the hydrant body This is a factor that lowers the workability.
[0007]
In addition, for example, even in the case of a water faucet where it is desired to change the direction of the water faucet body such that the direction of the projected water outlet is a desired direction, connection is made by screwing a tapered male screw into a conventional parallel female screw. In a pipe joint, the direction of the hydrant body is fixed in a state where the screw is tightened, and the convenience of the hydrant is impaired. .
[0008]
The present invention solves the above-described problems of the conventional pipe joint, and requires a predetermined amount of protrusion of the water tap from the fitting body, that is, the protrusion of the water tap from the mounting surface, without requiring skill. It is an object of the present invention to provide a pipe joint which can be easily set to a value, facilitates a connection operation between a pipe and a hydrant main body, and can set a direction of a hydrant main body to a desired direction.
[0009]
[Means for Solving the Problems]
Means taken by the present invention to solve the above problems will be described below. The pipe joint of the present invention is `` a joint body connected to the end of the pipe and fixed to the mounting surface, for connecting a pipe and a water tap which are routed to the back side of the mounting surface such as a wall surface, A pipe joint having a cylindrical connection member rotatably mounted in the joint body while the water tap is screwed in, and a regulating protrusion for regulating rotation on an outer peripheral surface of the connection member. And a restricting convex portion on which the restricting convex portion of the connection member can be locked is provided on an inner peripheral surface of the joint main body. " is there.
[0010]
The connecting member is rotatably mounted in the joint main body, and is stopped within a predetermined range (less than 360 °) with the restricting projections locked together. Then, when the water tap is screwed into the connection member, the connection member also initially rotates together with the water tap, but after the above-described restricting projection of the connection member is locked, the rotation of the connection member is restricted. Then, the water tap is gradually screwed into the connection member and is advanced with respect to the connection member. Then, the water tap is screwed into the female screw deep end of the connection member. In this state, proper positioning of the water tap with respect to the joint body in the screwing direction is performed.
[0011]
In this way, for example, in a case where a crank joint, which is an example of a water tap, is screwed between the joint main body and the water tap main body on the water supply pipe side and the hot water supply pipe side, both crank joints are connected to each connection of the water tap main body. It is necessary to match the interval of the connection port connected to the hydrant main body of the crank joint to the interval of the connection part of the hydrant main body in order to connect to the part. Therefore, one or both of the crank joints are adjusted by rotating them in the opposite direction, but at this time, the connecting member, which has been restricted from rotating together with the crank joint by the regulating protrusion of the joint body up to that time, However, it rotates together with the crank joint until it rotates in the opposite direction and its regulating projection is locked again. Therefore, during this co-rotation, the amount of screwing of the crank joint into the connecting member does not change. Therefore, the positioning of the crank joint in the screwing direction with respect to the connecting member does not change. Therefore, the protrusion amount of the crank joint from the joint body, that is, the protrusion amount of the crank joint from the mounting surface can be easily determined to a predetermined value, and the connection work between the pipe and the hydrant body can be facilitated.
[0012]
Further, using such a pipe joint, for example, when connecting a single faucet which is a faucet that discharges only water to the pipe, as described above, screw the faucet to the female screw deep end of the connection member. Connect with. Here, when the water tap which has been screwed into the connection member is rotated in the opposite direction, the connection member which has been restricted from rotating co-rotating with the water tap by the regulating protrusion of the joint body is rotating in the opposite direction. Until the regulating projection is locked again, it rotates together with the water faucet. Therefore, the direction of the water tap connected to the joint body via the connecting member can be changed within a predetermined range regulated by the regulating protrusion.
[0013]
In the first aspect of the present invention, a pipe joint using a crank joint as a water tap may be used (claim 2).
[0014]
As described above, in a case where a pipe joint is used for the hydrant body of the hot and cold water mixing faucet, a pipe joint using a crank joint is used as a hydrant, and the distance between the two connecting portions of the hydrant body is adjusted. It is necessary to adjust the interval of the connection port on the pipe joint side. When the present invention is applied to a pipe joint using the crank joint, the crank joint can be appropriately positioned in the screwing direction with respect to the connection member as described above, and the screw can be screwed in a state where the positioning in the screwing direction has been performed. Since the rotation of the crank joint can also be adjusted, adjustment to match the interval of the connecting portion of the water faucet main body can be extremely easily performed, and the connecting operation can be performed easily and accurately.
[0015]
Further, `` in order to connect the piping and the hydrant which are routed to the back side of the mounting surface such as a wall surface, the joint body connected to the end of the piping and fixed to the mounting surface, and the hydrant is And a crank-shaped connecting member that is attached and rotatably mounted in the joint body. "(Claim 3).
[0016]
As described above, in a case where a pipe joint is used for the hydrant body of the hot and cold water mixing faucet, the interval between the connection ports on the pipe joint side is set to the interval between the two connection portions of the hydrant body using a crank joint. Need to match. In such a case, the hydrant main body can be directly connected to the joint main body without using a crank joint by applying the crank-shaped connecting member. In this case as well, there is no need to position the connection member in the direction of the rotation axis, and since the rotation of the connection member can be adjusted, the adjustment to match the interval of the connection portion of the water faucet main body can be performed very easily. The connection work can be performed easily and accurately.
[0017]
In each of the above-mentioned inventions, a seal member may be provided between the connection member and the joint body, and a seal member may be provided between the water faucet and the connection member.
[0018]
By attaching the seal member in this manner, the connection member and the joint body rotatably mounted on the joint body are always reliably watertight even when the connection member is rotated, and the connection member and Also, watertightness with a water tap faucet fitting screwed into the connection member is reliably performed. In particular, as described above, in the present invention, it is possible to accurately position the hydrant with respect to the connecting member in the screwing direction, so that the degree of collapse of the seal member mounted between the connecting member and the hydrant is appropriate. And it is possible to easily obtain appropriate crushing of the seal member.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the pipe joint of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1 and FIG. 2, the pipe joint 1 of the present invention has a joint main body 10 fixed to the mounting surface 2, a connection member 30 mounted in the joint main body 10, and screwed into the connection member 30. It has a fixed crank joint 50 which is an example of a water tap of the present invention.
[0020]
A mounting hole 3 is formed in the mounting surface 2, and the joint body 10 is inserted and fixed in the mounting hole 3. The joint main body 10 has an overall shape bent and formed in a substantially L-shape, and a pipe connection portion 12 connected to a pipe (not shown) is provided at one end of the joint body 10, and is provided at the other end thereof. A crank joint connecting portion 14 is provided which is bent substantially at a right angle from the pipe connecting portion 12 and to which the crank joint 50 is connected. Further, a male screw is engraved on the outer peripheral surface of the crank joint connecting portion 14. Near the rear end of the crank joint connecting portion 14, a flange 16 is provided around the periphery of the mounting hole 3 on the back side of the mounting surface 2 with the sheet packing 4 interposed therebetween. The joint body 10 is fixed to the mounting surface 1 by holding and fixing the mounting surface 1 in cooperation with the nut 5 screwed to the male screw from the front side of the mounting surface 1. A nut 5 screwed into a male screw of the crank joint connection portion 14 is provided with a dished wood screw 7 inserted into the fixing hole 6 and screwed into the mounting surface 2. The nut 5 screwed to the crank joint connecting portion 14 is provided so as not to be loosened by the stress transmitted by the operation or the water hammer or the like, so that the joint body 10 is more securely fixed to the mounting surface 2. Have been.
[0021]
Further, a first housing formed at the inner rear end of the crank joint connecting portion 14 has a larger diameter than the inside of the pipe connecting portion 12 and has a slightly larger diameter than a small diameter portion 32 of the connecting member 30 described later. A portion 18 is formed, and a step portion 20 to which an end surface of the connection member 30 is locked is formed between the portion 18 and the inner peripheral surface on the pipe connection portion 12 side. Further, on the tip end side of the crank joint connecting portion 14 with respect to the housing portion 18, a second portion formed with a larger diameter than the housing portion 18 and with a larger inner diameter than the large diameter portion 34 of the connecting member 30. The two accommodating portions 22 are provided, and a step portion 24 is formed between the first accommodating portion 18 and the large-diameter portion 34 of the connecting member 30 to be locked. As shown in FIGS. 1 and 3, the regulating protrusion 25 protrudes inward to a position where the regulating protrusion 25 can be locked to the regulating protrusion 46 of the connecting member 30 near the opening of the second housing portion 22. Is established. Further, a circumferential groove 26 to which a C-ring 28 shown in FIG. 4 can be attached and fixed is provided on the inner peripheral surface near the opening of the crank joint connecting portion 14.
[0022]
Next, the connection member 30 will be described. The connection member 30 is formed in a substantially cylindrical overall shape, and has a small-diameter portion 32 whose one end is accommodated in the first accommodation portion 18 of the joint body 10 and a large-diameter portion whose other end is accommodated in the second accommodation portion 22. A diameter portion 34 is provided. The end surface of the small diameter portion 32 of the connecting member 30 is locked to the step portion 20 in the joint body 10, and the step portion 36 between the small diameter portion 32 and the large diameter portion 34 is locked to the step portion 24, The end face of the diameter portion 34 is locked by a C-ring 28 mounted on the circumferential groove 26 of the joint body 10, and the connecting member 30 is mounted inside the joint body 10 so as to be rotatable around its axis.
[0023]
The outer peripheral surface of the small diameter portion 32 is provided with two peripheral grooves 40 each having an O-ring 38 for watertightness with the inner peripheral surface of the first housing portion 18. A peripheral groove 42 is formed at the inner rear end of the large-diameter portion 34 at a position where an opening end surface of a crank joint 50 described later is located. The peripheral groove 42 is recessed in the axial direction of the connecting member 30. In the groove 42, a packing 44 for watertightness between the inside of the connecting member 30 and the crank joint 50 is mounted. A female screw into which the crank joint 50 is screwed is formed on the inner peripheral surface of the large diameter portion 34. This female screw is a parallel female screw.
[0024]
As shown in FIGS. 1 and 3, on the outer peripheral surface of the large-diameter portion 34, when the connecting member 30 rotates, the regulating convex portion 25 protruding into the second housing portion 22 of the joint body 10. A restricting convex portion 46 that can abut the protruding portion protrudes outward. The outer diameter of the large-diameter portion 34 excluding the restricting convex portion 25 is provided smaller than the inner diameter of the second accommodation portion 22, and between the two is sufficient for the connection member 30 to be rotatable in the joint body 10. Gap is provided. As shown in FIG. 3, the width of each of the restricting convex portions 25 and 46 in the direction around the axis of the connecting member 30 is formed at about 9/200 of the outer circumference of the connecting member 30. 30 is provided so as to be rotatable within a range of about 327 degrees. Further, as shown in FIG. 1, the regulating protrusion 25 on the joint body 10 side is formed only near the innermost end of the second housing portion 22, while the regulating protrusion 46 on the connecting member 30 side is It is formed only on the side, and is provided so that the restricting convex portion 46 is locked to the restricting convex portion 25 only when the connecting member 30 is sufficiently pressed into the second housing portion 22 of the joint body 10. .
[0025]
Next, the crank joint 50 will be described. As shown in FIG. 1, the crank joint 50 is formed in a crank shape as a whole. The first joint 52 is screwed to the connecting member 30, and the first joint 52 extends from the first joint 52 to the axis of the first joint 52. A second connecting portion 54 that is bent and formed substantially at a right angle to the connecting portion, and a tip of the second connecting portion 54, which is the same as the axis of the first connecting portion, is opened in the opposite direction and is connected to the faucet main body 8 side. A connection port 56 to be connected is provided.
[0026]
A parallel male screw is engraved on the outer peripheral surface of the first connecting portion 52, and is screwed to a female screw on the inner peripheral surface of the large diameter portion 34 of the connecting member 30. The opening end surface of the first connection portion 52 is provided at a position facing the packing 44 mounted on the peripheral groove 42 of the connection member 30, and when the first connection portion 52 is screwed in, the first connection portion 52 is closed. The packing 44 is provided so as to be crushed by the distal end surface of the portion 52.
[0027]
Further, a cover 58 that covers the nut 5 and the wood screw 7 with a flat head described above for aesthetic purposes is engaged with the outer peripheral surface of the first connecting portion 52 at a portion exposed to the outside while being screwed to the connecting member 30. A plurality of ridges 60 are formed. The cover 58 is provided with an insertion hole through which the first connection portion 52 is inserted, and a cylindrical portion 62 is formed continuously from the insertion hole. Further, a plurality of protrusions 64 are formed on the inner peripheral surface of the cylindrical portion 62 so that the protrusions 60 can be locked. The protrusions 64 are locked by the protrusions 60 of the first connection portion 52. , The cover 58 is provided so as to be positioned with respect to the first connection portion 52. Further, inside the first connection portion 52, a flow rate control valve 61 having a water stopping function and a strainer 63 are incorporated.
[0028]
The first connecting portion 52 is provided with a second connecting portion 54 which is bent substantially at right angles to the axis of the first connecting portion 52, and a water tap is provided at an end of the second connecting portion 54. A connection port 56 to which each connection section 66 of the main body 8 is connected is provided so as to open in the axial direction of the first connection section 52.
[0029]
Next, a description will be given of a method of connecting the pipe using the pipe joint 1 and the water tap main body 8. First, the connection member 30 is mounted in the joint body 10. As shown in FIG. 3, the connecting member 30 is inserted into the joint main body 10 with the positions thereof shifted so as not to interfere with the restricting convex portion 25 on the joint body 10 side and the restricting convex portion 46 on the connection pipe 30 side. , Until the small diameter portion 32 comes into contact with the step portion 20 of the first accommodation portion 18. In addition, the connection member 30 may be mounted in the joint body 10 in advance when the piping joint 1 is shipped. Next, the joint body 10 is fixed to the mounting surface 2. The crank joint connection part 14 of the joint body 10 is inserted into the mounting hole 3, and the flange part 16 with the seat packing 4 interposed therebetween is brought into contact with the periphery of the mounting hole 3. In this state, the nut 5 is screwed into the crank joint connecting portion 14 from the front side of the mounting surface 2 with the seat packing 4 interposed therebetween, and the mounting surface 2 is clamped and fixed by the flange portion 16 and the nut 5. The joint body 10 is fixed to the mounting surface 2. Further, a countersunk wood screw 7 is screwed into the mounting surface 2 from the fixing hole 6 of the nut 5 to prevent the nut 5 from rotating.
[0030]
Next, the crank joint 50 is screwed to the connection member 30. First, the cover 58 is inserted to the far end of the first connection portion 52, and the first connection portion 52 is screwed into the large diameter portion 34. Since the connecting member 30 is rotatably attached to the joint body 10 as described above, at the time of this screwing, the connecting member 30 initially rotates together with the first connecting portion 52, As shown in FIG. 3, after the restricting protrusion 46 on the connecting member 30 is rotated until it comes into contact with the restricting protrusion 25 on the joint body 10, the rotation of the connecting member 30 is restricted and the first connection is performed. The part 52 is gradually screwed and screwed into the connecting member 30. Then, when the first connection portion 52 is screwed into the female screw deep end of the large diameter portion 34, the packing 44 attached to the circumferential groove 40 at the deep end of the large diameter portion 34 is appropriately crushed and connected to the first connection portion 52. The first connection portion 52 is screwed into a state where the watertightness with the member 30 can be sufficiently performed. Regarding the faucet main body 8 of the hot and cold water mixing faucet, the connection work up to this point is performed for the two pipe joints 1 on the water supply pipe side and the hot water supply pipe side. In this state, appropriate positioning with respect to the mounting surface 2 is performed with respect to the axial direction (screw-in direction) of the first connection portion 52 of the crank joint 50 with respect to the joint body 10 via the connection member 30. Further, between the outer peripheral surface of the small diameter portion 32 and the inner peripheral surface of the joint body 10, the O-ring 38 constantly keeps water tight.
[0031]
Then, in the direction of arrow B shown in FIG. 2, the interval between the connection ports 56 of the two crank joints 50 is adjusted to the interval between the connection portions 66 of the water tap main body 8. In order to adjust the interval, the interval is adjusted by rotating the second connecting portion 54 of one or both of the crank joints 50 in a direction opposite to the screwing direction. At this time, the connection member 30, whose rotation has been restricted by the locking of the regulating protrusions 46 to the regulating protrusions 25, is again rotated in the reverse direction by the separation of the regulating protrusions 25 and 46. Until the restricting protrusion 46 is locked by the restricting protrusion 25, it rotates together with the crank joint 50. Thus, the interval between the connection ports 56 of the crank joint 50 can be adjusted. At this time, the amount of screwing of the crank joint 50 into the connection member 30 does not change while the connection member 30 is rotated. Therefore, the degree of collapse of the packing 44 at the deep end of the large-diameter portion 34 of the connection member 30 does not change, and a sufficient seal can still be ensured. At the same time, the positioning of the crank joint 50 (positioning in the screwing direction of the crank joint 50) with respect to the connecting member 30 positioned with respect to the joint body 10 and the mounting surface 2 by the C ring 28 and the like also changes. There is no. Therefore, since the protrusion amount of the crank joint 50 with respect to the mounting surface 2 does not differ between the two crank joints 50, the positions of the two connection ports 56 are aligned in the direction of the arrow C in FIG. The connection work of the connection port 56 to each connection portion 66 can be performed smoothly. Finally, the cylindrical portion 62 is slid so that the ridge 64 on the inner peripheral surface of the cylindrical portion 62 of the cover 58 sequentially passes over the ridge 60 of the first connection portion 52, and the outer peripheral end of the cover 58 is pressed against the mounting surface 2. And the nut 5 and the like are covered. The sliding operation of the cover 58 may be performed immediately after the screwing operation of the crank joint 50 described above.
[0032]
The above embodiment is an exemplification, and the present invention is not limited to this, and various changes can be made within the scope of the present invention. For example, each restricting convex portion is not limited to the above-described shape and width, and the connecting member can rotate in a predetermined range with respect to the joint body, and when the connecting member is out of the predetermined range, the rotation is restricted. Anything is fine. Further, the restricting convex portion may be a separate member to be retrofitted to the connecting member or the joint body.
[0033]
Next, a second embodiment of the present invention will be described. The present embodiment relates to a pipe joint for connecting a single faucet as a water tap and a pipe, and is an example in which the single faucet is directly screwed into the pipe joint. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. As shown in FIG. 5, a single faucet 8 'is connected to the pipe joint 1'. The single faucet 8 ′ is connected to a water supply pipe (not shown) via a pipe joint 1 ′, and a hose (not shown) is connected to a water outlet 70 projecting obliquely upward from the side of the single faucet 8 ′. ) To which a fitting 72 is attached, and is used as a water tap. In addition, a connection portion 78 provided with a parallel male screw is provided below the single faucet 8 '.
[0034]
In this pipe joint 1 ′, the connecting portion 78 of the single faucet 8 ′ is directly screwed into the parallel female screw of the connecting member 30 to connect and fix the single faucet 8 ′ to the pipe joint 1 ′ and to connect to the water supply pipe.
[0035]
The single faucet 8 'connected and fixed to the pipe joint 1' in this manner draws the hose connected to the connection fitting 72 so that the restricting convex portion 46 does not move within the range in which the restricting convex portion 25 is not restricted. It is possible to rotate around the screwing direction of the faucet 8 ′, even if the hose is drawn in various directions during use, it is difficult for the vicinity of the hose connection part to be bent, and the convenience of a single faucet as a faucet is improved. Increase. Also at this time, the O-ring 38 and the packing 44 ensure the watertightness of each connection portion of the pipe joint 1 ′. In addition, after connecting and fixing the single faucet 8 ′ to the pipe joint 1 ′, if it is not necessary to change the direction of the spout 70 to a desired direction and thereafter change the direction, the lower part of the faucet main body 8 ′ is provided. A means for fixing the provided flange portion 80 or the like to the mounting surface 2 may be separately provided so that the direction of the water faucet main body 8 'is not changed thereafter.
[0036]
Next, a third embodiment of the present invention will be described. In the present embodiment, a connecting member is formed in a crank shape, and a connecting member that can be used as it is instead of a crank joint for connecting a water faucet body is used. As shown in FIG. 6, a connection member 30 'is inserted and connected to the joint main body 10 of the pipe joint 1'. The connecting member 30 ′ is formed in a crank shape as a whole, and is bent substantially perpendicularly to the first connecting portion 52 inserted into the joint body 10 and the axis of the first connecting portion 52 from the first connecting portion 52. A second connecting portion 54 that is formed in a curved shape and connected thereto, and a connecting port 56 that is opened at the end of the second connecting portion 54 in the same direction as the axis of the first connecting portion and that is opened in the opposite direction and is connected to the faucet main body 8 side. And are provided. The first connecting portion 52 of the connecting member 30 'is provided in a substantially cylindrical shape, a small-diameter portion 32' is formed at the tip thereof, and a large-diameter portion 34 'is formed at the far end side of the small-diameter portion 32'. . The small diameter portion 32 ′ is accommodated in the first accommodation portion 18 of the joint body 10, and the large diameter portion 34 ′ is accommodated in the second accommodation portion 22. The distal end face of the small diameter portion 32 ′ is locked by the step portion 20 in the joint body 10, and the step portion 36 of the small diameter portion 32 ′ and the large diameter portion 34 ′ is locked by the step portion 24, A peripheral groove 90 is provided in the large diameter portion 34 ', and a split ring 91 divided into two is mounted in the peripheral groove 90. An end face of the split ring 91 is locked by a C ring 28 attached to the circumferential groove 26 of the joint body 10 and is prevented from falling off. An accommodation portion 92 for accommodating the split ring 91 is formed on the inner side of the circumferential groove 26 of the joint body 10. In this manner, the first connecting portion 52 of the connecting member 30 is mounted in the joint body 10 so as to be rotatable around its axis. In the outer peripheral surface of the small-diameter portion 32 ′, two peripheral grooves 40 each having an O-ring 38 for watertightness with the inner peripheral surface of the first housing portion 18 are provided. Although not shown in the drawings, a packing interposed between the connection port 66 of the hydrant main body 8 and the connection port 56 connected to the hydrant main body 8 side is attached, and the connection member 30 ′ Watertightness with the hydrant main body 8 is achieved. Note that, in the present embodiment, unlike the first and second embodiments, the connecting member 30 ′ and the joint body 10 are not provided with the restricting projections. It can rotate freely over 360 degrees around the axis.
[0037]
【The invention's effect】
As described above, the present invention includes a joint body connected to the end of the pipe and fixed to the mounting surface, and a cylindrical connecting member into which the water tap is screwed and which is rotatably mounted in the joint body. The joint is provided with a regulating projection for regulating rotation on the outer peripheral surface of the connecting member, and a regulating convex on the inner peripheral surface of the joint body, the regulating convex of the connecting member being lockable. By adopting the configuration in which the portion is provided (claim 1), the protrusion amount of the crank joint from the joint body can be easily determined to a predetermined value without requiring skill, and the pipe and the hydrant body can be easily determined. Connection work with the device can be facilitated. Further, in the invention of the first aspect, by using the crank joint as the water tap (Claim 2), the crank joint can be appropriately positioned in the screwing direction with respect to the connecting member, and the positioning in the screwing direction can be performed. In this state, the screwed-in crank joint can be rotationally adjusted, so that the adjustment to the interval of the connecting portion of the water faucet main body can be performed very easily. A joint body connected to the end of the pipe and fixed to the mounting surface, and a crank-shaped connecting member to which a water tap is attached and which is rotatably mounted in the joint body are provided. By adopting 3), the hydrant body can be directly connected to the joint body without going through the crank joint, and the crank joint from the joint body can be directly connected to the joint body without requiring skill as described above. The amount of protrusion can be easily set to a predetermined value, and the connection work between the pipe and the hydrant body can be facilitated. Further, in each of these inventions, the seal member is mounted between the connection member and the joint body, and the seal member is mounted between the water tap and the connection member (claim 4). Watertightness between the main body and the connecting member and watertightness between the connecting member and the water tap can be easily and reliably performed.
[Brief description of the drawings]
FIG. 1 is a partially cutaway side view of a piping joint of the present invention.
FIG. 2 is a plan view of a pipe joint and a water tap main body.
FIG. 3 is a longitudinal sectional view of the joint main body and the connecting member taken along line AA of FIG. 1;
FIG. 4 is a front view of a C-ring.
FIG. 5 is a side view partially broken sectional view of another pipe joint of the present invention.
FIG. 6 is a side view partially broken sectional view of still another pipe joint of the present invention.
[Explanation of symbols]
1, 1 '; Piping joint, 2; Mounting surface, 3; Mounting hole, 4; Sheet packing, 5; Nut, 6; Fixing hole, 7; Wood screw with plate, 8; Water tap main body, 8'; Plug, 9; operation handle, 10; joint body, 12; pipe connection part, 14; crank joint connection part, 16; flange part, 18; first accommodation part, 20; step part, 22; second accommodation part, 24 Step portion, 25; regulating convex portion, 26; circumferential groove, 28; C ring, 30; connecting member, 32; small diameter portion, 34; large diameter portion, 36; step portion, 38; O ring, 40; , 42; peripheral groove, 44; packing, 46; regulating convex part, 50; crank joint, 52; first connecting part, 54; second connecting part, 56; connection port, 58; cover, 60; Flow control valve, 62; cylindrical portion, 63; strainer, 64; ridge, 66; connecting portion, 70; water outlet, 72: connecting fitting, 6; nut 78; connecting portion, 80; flange, 90; circumferential groove, 91; split ring, 92; accommodating portion.

Claims

In order to connect the piping and the hydrant which are routed to the back side of the mounting surface such as a wall surface, a joint body connected to the end of the piping and fixed to the mounting surface, and the hydrant is screwed in A pipe joint provided with a cylindrical connection member rotatably mounted in the joint body,
A regulating protrusion for regulating rotation is provided on an outer peripheral surface of the connecting member, and a regulating convex portion capable of locking the regulating convex portion of the connecting member is provided on an inner peripheral surface of the joint body. A pipe joint characterized by the following.

The said water tap is a crank joint, The piping joint of Claim 1 characterized by the above-mentioned.

In order to connect the piping and the hydrant which are routed to the back side of the mounting surface such as a wall surface, the joint body connected to the terminal of the piping and fixed to the mounting surface, and the hydrant is attached And a crank-shaped connecting member rotatably mounted in the joint body.

The seal member is mounted between the connecting member and the joint body, and a seal member is mounted between the water tap and the connecting member. The described pipe fitting.