JP4145123B2 - Fitting - Google Patents

Fitting Download PDF

Info

Publication number
JP4145123B2
JP4145123B2 JP2002333753A JP2002333753A JP4145123B2 JP 4145123 B2 JP4145123 B2 JP 4145123B2 JP 2002333753 A JP2002333753 A JP 2002333753A JP 2002333753 A JP2002333753 A JP 2002333753A JP 4145123 B2 JP4145123 B2 JP 4145123B2
Authority
JP
Japan
Prior art keywords
joint body
peripheral surface
resin pipe
end portion
core member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2002333753A
Other languages
Japanese (ja)
Other versions
JP2004169758A (en
Inventor
延彦 林
剛一 中村
昌宏 置田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ONDA MFG.CO.,LTD.
Original Assignee
ONDA MFG.CO.,LTD.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ONDA MFG.CO.,LTD. filed Critical ONDA MFG.CO.,LTD.
Priority to JP2002333753A priority Critical patent/JP4145123B2/en
Publication of JP2004169758A publication Critical patent/JP2004169758A/en
Application granted granted Critical
Publication of JP4145123B2 publication Critical patent/JP4145123B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Branch Pipes, Bends, And The Like (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Joints With Sleeves (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば水道配管、温水配管等と樹脂パイプとの間を接続する継手に関するものである。
【０００２】
【従来の技術】
従来より、例えば水道配管に、架橋ポリエチレン又はポリブテン製の樹脂パイプを接続するために継手が使用されている。この種の継手としては、以下に示すものが知られている（例えば、特許文献１参照）。すなわち、内部に樹脂パイプを接続可能に構成した継手本体と、樹脂パイプの端部に内嵌されるコア部材と、継手本体から樹脂パイプを抜け止め保持するためのロックリングとを備えているタイプのものである。
【０００３】
前記継手本体の中央部内周面には溝部が周設され、その溝部にはＯリングが嵌着されている。また、前記コア部材は略円筒状をなし、その外端側には樹脂パイプの内側に嵌入可能な外径を有する筒部が形成され、該筒部の略中央部外周面には収容溝が周設されている。この収容溝にはシールリングが嵌着され、樹脂パイプの端部にコア部材が内嵌された際には、樹脂パイプの端部内周面と筒部の外周面との間をシールするようになっている。そして、コア部材が内嵌された樹脂パイプを継手本体内に挿入すると、前記Ｏリングの内周面とコア部材の内端部外周面とが密接されることにより、継手本体の内周面とコア部材の内端部外周面との間が完全にシールされるようになっている。
【０００４】
【特許文献１】
特開２００１―２５４８８４号公報 （第３〜５頁、図２）
【０００５】
【発明が解決しようとする課題】
ところが、上記従来構成の場合、継手本体の内周面とコア部材の内端部外周面との間が密接し、コア部材の内端部が継手本体内に実質上固定されている。このため、樹脂パイプに対して曲げ応力が加わった際には、樹脂パイプが前記曲げ応力に応じて変形される。従って、コア部材の外周面の収容溝に嵌着されたシールリングと樹脂パイプの端部内周面との間に隙間が生じ、その部分を通じて漏水するおそれがあるという問題があった。
【０００６】
この発明は、このような従来技術に存在する問題点に着目してなされたものである。その目的とするところは、樹脂パイプの変形を防ぎ、コア部材の外周面と樹脂パイプの内周面との間の隙間をなくして漏水を防止することができる継手を提供することにある。
【０００７】
【課題を解決するための手段】
上記の目的を達成するために、請求項１に記載の発明の継手は、筒状をなし、基端部には管体が接続され、先端部には樹脂パイプが挿入されて接続されるとともに、中央部内周面は基端部の内径よりも先端部の内径が大きくなる段差状に形成され、その段差部分に樹脂パイプの先端が当接される当接面が設けられた継手本体と、略円筒状をなし、内端部は継手本体の基端部内に挿着され、外端部は継手本体の先端部内に位置し、中央部外周面は内端部の外径よりも外端部の外径が小さくなる段差状に形成され、その段差部分に樹脂パイプの先端が係合される係合面が設けられ、内端部外周面と継手本体の基端部内周面との間には両者間をシールするシール手段が設けられるとともに、外端部外周面には樹脂パイプ内周面との間をシールするシール機構が設けられたコア部材と、継手本体の先端部に設けられ、樹脂パイプを抜け止め保持するための保持手段とを備え、前記コア部材の内端部外周面と継手本体の基端部内周面との間には、樹脂パイプに加わる曲げ応力による変形に追従して継手本体の軸線と交差する方向へのコア部材の動きを許容する空隙が設けられているものである。
【０００８】
請求項２に記載の発明の継手は、請求項１に記載の発明において、前記継手本体の当接面の近傍位置には継手本体の軸線と直交する方向に延びる貫通孔が透設され、該貫通孔には継手本体の先端部から挿入された樹脂パイプが当接することにより継手本体の外周面から突出して視認できるような押出ピンが挿通支持されているものである。
【０００９】
請求項３に記載の発明の継手は、請求項１又は請求項２に記載の発明において、前記コア部材の内端部が継手本体の基端部内に挿着された状態で、コア部材のシール手段から係合面までの距離は、継手本体の当接面から押出ピンの樹脂パイプ当接部までの距離より長くなるように設定されているものである。
【００１０】
【発明の実施の形態】
以下、本発明の実施形態を図面に基づいて詳細に説明する。
図１及び図２に示すように、継手本体１１は略円筒状をなし、その基端部外周面には第１雄ねじ部１２が螺刻され、図示しない水道配管等の管体に螺合可能になっている。継手本体１１の基端部内周面は基端部の内径よりも先端部の内径が大きくなる段差状に形成されており、その段差部分が第１当接面１３となっている。
【００１１】
継手本体１１の軸線１４方向の中央部内周面は、基端部の内径よりも先端部の内径が大きくなる段差状に形成され、その段差部分が第２当接面１５となっている。この第２当接面１５を境界として、第２当接面１５よりも継手本体１１の先端側には樹脂パイプ１６等が挿入される空間が形成されている。また、第２当接面１５の内端縁には、継手本体１１の基端側に向かうに従い縮径する第１面取り部１７が設けられている。
【００１２】
第２当接面１５より僅かに先端側には、略円柱状をなす貫通孔１８が継手本体１１の軸線１４と直交する方向に延びるように１箇所形成されている。貫通孔１８の内周面には第１段差部１８ａが形成され、その第１段差部１８ａよりも上方における孔径はその下方における孔径に比べて大きくなっている。第１段差部１８ａよりも上方には略円筒状をなすカラー１９が嵌入されており、その内周面には第２段差部１９ａが設けられ、同第２段差部１９ａより内部に環状凹部１９ｂが形成されている。そして、樹脂パイプ１６の継手本体１１内への挿入状態を視認するための略円柱状をなす押出ピン２０が前記カラー１９を介して貫通孔１８に挿通支持されている。この押出ピン２０の内端部は円錐形状をなし、内方に向かうほど縮径するテーパ面２０ａが形成されている。また、押出ピン２０の中間部には大径部２１が形成されており、この大径部２１が前記環状凹部１９ｂをスライドすることによって、押出ピン２０が貫通孔１８内を往復動可能に構成されている。
【００１３】
貫通孔１８内における押出ピン２０の往復動は、押出ピン２０の大径部２１の内端面が貫通孔１８の第１段差部１８ａに係合する位置と、大径部２１の外端面がカラー１９の第２段差部１９ａに係合する位置との間において規制されている。つまり、押出ピン２０の外端部が貫通孔１８内に没入し、内端部が貫通孔１８から内方へ突出する位置と、押出ピン２０の外端部が継手本体１１の外周面から外方に突出し、内端部が貫通孔１８内に没入する位置との間を変位しうる構成となっている。また、押出ピン２０の外周面は赤色に着色されており、押出ピン２０が継手本体１１の外周面から外方に突出した際に押出ピン２０の外端部が視認し易くなっている。
【００１４】
図２に示すように、継手本体１１内に樹脂パイプ１６を挿入する以前は、押出ピン２０の大径部２１の内端面が貫通孔１８の第１段差部１８ａに係合するとともに、押出ピン２０の外端面と継手本体１１の外周面とが面一となっている。一方、図１に示すように、樹脂パイプ１６の先端が第２当接面１５に当接した際には、押出ピン２０の大径部２１の外端面がカラー１９の第２段差部１９ａに係合するとともに、押出ピン２０の外端部が継手本体１１の外周面から外方に突出するようになっている。
【００１５】
継手本体１１の先端部内周面には雌ねじ部２２が螺刻され、略円筒状をなす押し輪２３の先端部外周面に螺刻された第２雄ねじ部２４が螺合されることにより、継手本体１１の先端部に押し輪２３が取付けられる。該押し輪２３の中心には、挿入孔２５が貫通形成されており、先端部内周面には挿入孔側端縁から継手本体１１の軸線１４方向内方に向かうに従い縮径する第２面取り部２６が設けられている。
【００１６】
継手本体１１の内周部において、雌ねじ部２２よりも基端側には、内周全体にわたって係止段部２７が形成されている。この係止段部２７と押し輪２３の先端面との間には、樹脂パイプ１６を抜け止め保持する保持手段としての一対のロックリング２８が、その間に円環状のスペーサ２９を介装した状態で挟着されている。図３に示すように、これらロックリング２８は、ステンレス鋼等の金属材料製の円環状をなすベースリング２８ａと、ベースリング２８ａから内方へ同一長さで一定の角度をもって突出する複数の規制片２８ｂとからそれぞれ構成されている。
【００１７】
そして、継手本体１１内に接続された樹脂パイプ１６に引き抜き力が作用したときには、両ロックリング２８の各規制片２８ｂの先端が樹脂パイプ１６の外周面にそれぞれ食い込むことにより、樹脂パイプ１６は継手本体１１内に抜け止め保持されるようになっている。このため、継手は、継手本体１１内に樹脂パイプ１６を挿入する作業のみで樹脂パイプ１６を挿着することができるワンタッチ継手として構成されている。
【００１８】
図２に示すように、コア部材３０は略円筒状をなし、その内端部が継手本体１１の基端部内に挿着されている。継手本体１１の先端部内周面とコア部材３０の外端部外周面との間には樹脂パイプ挿入空間３１が設けられ、該樹脂パイプ挿入空間３１の厚みは樹脂パイプ１６の厚みと略同一に設定されている。コア部材３０の外周面は内端部の外径よりも外端部の外径が小さくなる段差状に形成されており、その段差部分が係合面３２となっている。この係合面３２とコア部材３０の内端面との継手本体１１の軸線１４方向への距離は、継手本体１１内の第２当接面１５と第１当接面１３との前記軸線１４方向への距離と略同一に形成されている。そして、図１に示すように、継手本体１１に樹脂パイプ１６が接続された際には、その先端が継手本体１１内の第２当接面１５に当接するとともに、コア部材３０の係合面３２に係合するようになっている。
【００１９】
係合面３２よりも内端側には一対の第１収容溝３３が周設され、各第１収容溝３３にはゴム材料製の断面円形状をなすシール手段としてのＯリング３４が嵌着されている。そして、継手本体１１の基端部内周面に各Ｏリング３４の外周面がそれぞれ密接されることにより、継手本体１１の基端部内周面とコア部材３０の内端部外周面との間がシールされるようになっている。また、コア部材３０の内端部外周面と継手本体１１の基端部内周面との間には前記軸線１４方向に均一の間隔を有する空隙３５が設けられている。この空隙３５は継手本体１１に接続された樹脂パイプ１６に加わる曲げ応力による樹脂パイプ１６の変形に追従して、継手本体１１の軸線１４と交差する方向へのコア部材３０の動きを許容するためのものである。従って、空隙３５はコア部材３０の内端部を継手本体１１の基端部内に挿入するために必要な設計上の隙間よりも大きくなるように設定しなければならない。具体的にはその空隙３５は、好ましくは０．０５〜０．５ｍｍ、さらに好ましくは０．１〜０．２ｍｍに設定される。
【００２０】
この空隙３５が０．０５ｍｍ未満では、コア部材３０の内端部外周面と継手本体１１の基端部内周面との間がほぼ密接された状態となり、コア部材３０がその内端部を介して継手本体１１内に実質上固定される。このため、継手本体１１に接続された樹脂パイプ１６に対して曲げ応力が加わった際には、継手本体１１の軸線１４と交差する方向へのコア部材３０の動きが抑制され、樹脂パイプ１６のみが前記曲げ応力に応じて変形する。従って、コア部材３０の外端部外周面と樹脂パイプ１６の端部内周面との間に隙間が生じ、この隙間を通じて漏水するおそれがある。一方、０．５ｍｍを越えると、前記シールリング３９によるコア部材３０の内端部外周面と継手本体１１の基端部内周面との間のシール状態を保持することが困難になり、空隙３５を通じて漏水するおそれがある。加えて、継手本体１１内へのコア部材３０の仮固定が不十分となり、継手本体１１内に樹脂パイプ１６を挿入する際にはコア部材３０にがたつきが生じ、接続し難くなる可能性がある。
【００２１】
また、先端側のＯリング３４から係合面３２までの距離（ａ）は、継手本体１１内に挿入された樹脂パイプ１６の先端が前記押出ピン２０と当接し、その外端部が継手本体１１の外周面から外方へ最大量突出したときの押出ピン２０の樹脂パイプ当接部３７から係合面３２までの距離（ｂ）よりも長く設定されている。このため、樹脂パイプ１６の先端が第２当接面１５に当接せず、押出ピン２０のテーパ面２０ａの先端と第２当接面１５との間に位置したときでも、一対のＯリング３４によって継手本体１１の基端部内周面とコア部材３０の内端部外周面との間のシール状態が保持されるようになっている。
【００２２】
前記係合面３２よりも外端側は円筒状の筒部３６となっており、その外径は樹脂パイプ１６の内径と略同一に形成されている。また、コア部材３０の外端部外周面、つまり筒部３６の外周面には継手本体１１の軸線１４方向に沿って一対の第２収容溝３８が周設され、各第２収容溝３８にはシール機構を構成するシールリング３９が嵌着されている。図２及び図３に示すように、シールリング３９には筒部３６の外周面よりも径方向外側に突出する突出部３９ａが形成され、該突出部３９ａよりも外端側には筒部３６の外周面と略面一に形成された外周面を有する平坦部３９ｂが設けられている。そして、継手本体１１に樹脂パイプ１６が挿入接続されたときには、樹脂パイプ１６の内周面に各シールリング３９の外周面がそれぞれ密接されることにより、樹脂パイプ１６の内周面と筒部３６の外周面との間がシールされるようになっている。
【００２３】
前記継手本体１１と、継手本体１１に内嵌されるコア部材３０と、継手本体１１に挿入接続された樹脂パイプ１６を抜け止め保持するためのロックリング２８等とにより本実施形態の継手が構成されている。
【００２４】
次に、前記継手の作用について以下に記載する。
さて、図２に示すような継手を組み立てる場合には、まず図３に示すように、継手本体１１内にコア部材３０を挿入する。このとき、継手本体１１内の第１面取り部１７がコア部材３０の挿入案内の役割をし、コア部材３０の内端面が継手本体１１内の第１当接面１３に当接するまで挿入する。次いで、スペーサ２９が介装された一対のロックリング２８を継手本体１１内に挿入し、係止段部２７に係止させる。そして、継手本体１１の先端部内周面の雌ねじ部２２に押し輪２３の第２雄ねじ部２４を螺合し、継手本体１１の先端部に押し輪２３を取付け、その先端面と係止段部２７との間に一対のロックリング２８を挟着する。
【００２５】
次いで、継手本体１１に樹脂パイプ１６を接続する場合には、まず樹脂パイプ１６の先端を樹脂パイプ挿入空間３１に挿入する。このとき、前記押し輪２３の第２面取り部２６が樹脂パイプ１６の挿入案内の役割をし、樹脂パイプ１６の端部にコア部材３０の筒部３６が内嵌される。そして、図４に示すように、樹脂パイプ１６の端部がシールリング３９を通過するときには、まずシールリング３９の平坦部３９ｂが最初に樹脂パイプ１６に内挿され、続いて突出部３９ａが内挿される。樹脂パイプ１６を継手本体１１の内奥側へさらに挿入すると、両ロックリング２８の各規制片２８ｂの先端が外方へ押圧されながら樹脂パイプ１６にそれぞれ摺接される。このとき、樹脂パイプ１６は各規制片２８ｂの元に戻ろうとする力に基づく内方への付勢力に抗して継手本体１１の内奥側へ挿入される。
【００２６】
図５に示すように、樹脂パイプ１６を継手本体１１の内奥側へさらに挿入すると、もう１つの第２収容溝３８に嵌着されたシールリング３９も同様に樹脂パイプ１６に内挿されるとともに、樹脂パイプ１６の先端が押出ピン２０のテーパ面２０ａに当接する。このテーパ面２０ａは内方に向かうほど縮径しているため、樹脂パイプ１６によって側方から力を受けると、その力が径方向の力に変換され、押出ピン２０の大径部２１が環状凹部１９ｂ内を外方へ移動する。このとき、押出ピン２０の外端部が貫通孔１８内に没入した状態から外方へ突出し、押出ピン２０の外周面の赤色の着色が視認される。そして、樹脂パイプ１６をさらに内奥側へ押し込むにつれて押出ピン２０は大径部２１を介して徐々に外方へ移動し、樹脂パイプ１６の先端が前記テーパ面２０ａの先端まで摺動したとき、押出ピン２０の外端部の突出量は最大となる。
【００２７】
続いて、図１に示すように、樹脂パイプ１６の先端が継手本体１１内の第２当接面１５及びコア部材３０の係合面３２に当接するまで樹脂パイプ１６を継手本体１１の内奥側へさらに挿入する。その後、二点鎖線で示すように、継手本体１１に接続された樹脂パイプ１６に曲げ応力が加わったときには、コア部材３０は前記空隙３５により樹脂パイプ１６の変形に追従した動きが許容される。また、樹脂パイプ１６に引き抜き力が作用したときには、両ロックリング２８の各規制片２８ｂの先端が樹脂パイプ１６の外周面に食い込むことにより、樹脂パイプ１６は継手本体１１内に抜け止め保持される。そして、継手本体１１に内嵌されたコア部材３０にその抜け出し方向への力が作用したときには、前記係合面３２が樹脂パイプ１６の先端に係合することによりコア部材３０の動きが規制される。
【００２８】
以上の実施形態によって発揮される効果について、以下に記載する。
・ 本実施形態の継手は、継手本体１１にコア部材３０が内嵌して構成されており、コア部材３０の内端部外周面と継手本体１１の基端部内周面との間には空隙３５が設けられている。このため、継手本体１１に接続された樹脂パイプ１６に曲げ応力が加わったときには、コア部材３０は前記空隙３５により樹脂パイプ１６の変形に追従して継手本体１１の軸線１４と交差する方向への動きが許容され、樹脂パイプ１６の変形を防ぐことができる。このとき、樹脂パイプ１６の端部内周面に各シールリング３９の外周面がそれぞれ密接された状態が維持されるため、コア部材３０の外周面と樹脂パイプ１６の内周面との間の隙間をなくして漏水を防止することができる。
【００２９】
・ また、継手本体１１内の第２当接面１５より僅かに先端側には貫通孔１８が設けられ、この貫通孔１８には押出ピン２０が挿通支持されている。そして、継手本体１１内に樹脂パイプ１６を挿入する際には、樹脂パイプ１６の先端が押出ピン２０のテーパ面２０ａに当接することにより、押出ピン２０の外端部が貫通孔１８から突出するようになっている。このため、押出ピン２０の外端部が継手本体１１の外周面から外方へ突出しているか否かによって樹脂パイプ１６の挿入状態を容易に視認することができる。
【００３０】
・ さらに、コア部材３０の先端側のＯリング３４から係合面３２までの距離（ａ）は、押出ピン２０の樹脂パイプ当接部３７から係合面３２までの距離（ｂ）よりも長く設定されている。このため、樹脂パイプ１６の先端が押出ピン２０の樹脂パイプ当接部３７と第２当接面１５との間で止まっているときでも、一対のＯリング３４によって継手本体１１の基端部内周面とコア部材３０の内端部外周面との間のシール状態が保持され、両者間の空隙３５を通じての漏水を防止することができる。
【００３１】
・ 前記第２収容溝３８に嵌着されたシールリング３９には、コア部材３０の筒部３６の外周面と略面一に形成された外周面を有する平坦部３９ｂが設けられ、該平坦部３９ｂよりも内端側には突出部３９ａが設けられている。このため、樹脂パイプ１６の先端がシールリング３９の突出部３９ａに突き当たるときには、既に同シールリング３９の平坦部３９ｂが樹脂パイプ１６に内挿された状態にある。従って、樹脂パイプ１６の先端が斜めに切断され、その先端部分がシールリング３９の突出部３９ａに当たった状態から樹脂パイプ１６をさらに内奥側へ押し込んだとしても、第２収容溝３８からのシールリング３９の抜け出しを効果的に抑制することができる。
【００３２】
・ 継手本体１１の軸線１４方向に沿って並んで配置される一対のシールリング３９によって樹脂パイプ１６の端部の内周面とコア部材３０の筒部３６の外周面との間をシールするようにしているので、高いシール性を発揮することができる。
【００３３】
・ 押出ピン２０の外周面は赤色に着色されているため、継手本体１１の外周面から外方に突出した際の押出ピン２０の外端部を容易に視認することができる。
【００３４】
なお、本実施形態は、次のように変更して具体化することも可能である。
・ コア部材３０の先端側のＯリング３４から係合面３２までの距離（ａ）が、押出ピン２０の前記軸線１４方向外端から係合面３２までの距離よりも長く設定される構成を採用してもよい。このように構成した場合、押出ピン２０の外端部が継手本体１１の外周面から僅かに外方に突出した状態を以って樹脂パイプ１６の接続を完了した場合でも、コア部材３０の内端部外周面と継手本体１１の基端部内周面との間のシール性能を確実に維持することができる。
【００３５】
・ 押出ピン２０の内端部の形状をかまぼこ状、三角柱状等に変更してもよい。
・ コア部材３０の内端部を継手本体１１の軸線１４方向外方に向かうに従い僅かに縮径するテーパ状に形成してもよい。すなわち、前記空隙３５は継手本体１１の軸線１４方向外方に向かうに従い僅かに拡大される。このように構成した場合、継手本体１１に接続された樹脂パイプ１６に曲げ応力が加わったときには、コア部材３０は樹脂パイプ１６の変形に追従できる許容範囲が大きくなり、樹脂パイプ１６の変形をさらに効果的に防ぐことができる。
【００３６】
・ 本実施形態の継手の保持手段を次のように構成してもよい。
即ち、継手本体１１の先端部内周面には、継手本体１１の軸線１４方向外方に向かうに従い拡径するテーパ面が形成される。継手本体１１と押し輪２３との間には保持手段としての前記軸線１４方向に延びる切り割りが形成され、その外周面に継手本体１１内のテーパ面に対応するテーパ面を有する押圧リングが介装される。
【００３７】
継手に樹脂パイプ１６を接続するときには、樹脂パイプ１６を継手本体１１内に挿入した後、スパナ等を用いて押し輪２３を継手本体１１に締付ける。このとき、押圧リングは、継手本体１１内のテーパ面によってガイドされることにより縮径しながら継手本体１１内に押し込まれ、押圧リングの内周面が樹脂パイプ１６の外周面に圧接することにより、樹脂パイプ１６は継手本体１１内に抜け止め保持される。
【００３８】
・ コア部材３０の筒部３６に設けられた各第２収容溝３８に嵌着されるシールリング３９の形状を断面円形状、断面楕円形状等に変更してもよい。
・ 継手本体１１の基端部内周面にコア部材３０の内端部外周面との間をシールするシール手段を設ける構成を採用してもよい。すなわち、継手本体１１の基端部内周面に一対の第１収容溝３３が周設されるとともに、各第１収容溝３３にはＯリング３４が嵌着される。
【００３９】
・ コア部材３０の外端部外周面と樹脂パイプ１６の端部内周面との間をシールするシールリング３９の数は一対に限定されるものでなく、１つでもよいし、３つ以上でもよい。
【００４０】
・ 押出ピン２０の外周面を黄色、緑色等の赤色以外の色で着色してもよい。
さらに、前記実施形態より把握できる技術的思想について以下に記載する。
・ 前記コア部材はその内端部外周面と継手本体の基端部内周面との間に設けられたシール手段によって継手本体内に仮固定されている請求項１から請求項３のいずれか一項に記載の継手。この構成によれば、コア部材を継手本体に予め挿入接続しておくことができる。
【００４１】
・ 前記コア部材に設けられたシール機構にはシールリングが用いられ、該シールリングには外端部外周面よりも径方向外側に突出する突出部が形成され、該突出部よりも外端側には外端部外周面と略面一に形成された外周面を有する平坦部が設けられている請求項１から請求項３のいずれか一項に記載の継手。この構成によれば、継手本体に樹脂パイプを接続する際に、シール機構を確実に維持することができる。
【００４２】
・ 前記継手本体の内周部には係止段部が形成され、先端部には押し輪が螺合接続され、係止段部と押し輪の先端面との間には樹脂パイプを抜け止め保持するための保持手段が介装されている請求項１から請求項３のいずれか一項に記載の継手。この構成によれば、樹脂パイプを継手本体内に容易に挿入することができるとともに、樹脂パイプの抜け止めを効果的に行うことができる。
【００４３】
【発明の効果】
以上詳述したように、この発明によれば、次のような効果を奏する。
請求項１に記載の発明の継手によれば、樹脂パイプの変形を防ぎ、コア部材の外周面と樹脂パイプの内周面との間の隙間をなくして漏水を防止することができる。
【００４４】
請求項２に記載の発明の継手によれば、請求項１に記載の発明の効果に加えて、樹脂パイプの挿入状態を容易に視認することができる。
請求項３に記載の発明の継手によれば、請求項１又は請求項２に記載の発明の効果に加えて、コア部材の内端部外周面と継手本体の基端部内周面との間のシール性能を確実に維持することができる。
【図面の簡単な説明】
【図１】 実施形態の継手に樹脂パイプを接続した状態を示す部分破断側面図。
【図２】 継手を示す部分破断側面図。
【図３】 継手を示す分解側断面図。
【図４】 継手本体内に樹脂パイプを挿入し始めた状態の部分破断側面図。
【図５】 樹脂パイプの先端が押出ピンに当接した状態を示す部分破断側面図。
【符号の説明】
１１…継手本体、１４…軸線、１５…当接面としての第２当接面、１６…樹脂パイプ、１８…貫通孔、２０…押出ピン、２８…保持手段としてのロックリング、３０…コア部材、３２…係合面、３４…シールリングとしてのＯリング、３５…空隙、３７…樹脂パイプ当接部、３９…シール機構を構成するシールリング。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint for connecting, for example, water pipes, hot water pipes and the like and resin pipes.
[0002]
[Prior art]
Conventionally, for example, a joint has been used to connect a resin pipe made of cross-linked polyethylene or polybutene to a water pipe. As this type of joint, the following is known (for example, see Patent Document 1). That is, a type including a joint body configured to be able to connect a resin pipe therein, a core member fitted in an end portion of the resin pipe, and a lock ring for preventing the resin pipe from being detached from the joint body belongs to.
[0003]
A groove portion is provided around the inner peripheral surface of the central portion of the joint body, and an O-ring is fitted in the groove portion. The core member has a substantially cylindrical shape, and a cylindrical portion having an outer diameter that can be fitted inside the resin pipe is formed on the outer end side of the core member. A housing groove is formed on the outer peripheral surface of the substantially central portion of the cylindrical portion. It is installed around. A seal ring is fitted into the housing groove, and when the core member is fitted into the end of the resin pipe, the gap between the inner peripheral surface of the end of the resin pipe and the outer peripheral surface of the cylindrical portion is sealed. It has become. Then, when the resin pipe in which the core member is fitted is inserted into the joint body, the inner peripheral surface of the joint body is brought into close contact with the inner peripheral surface of the O-ring and the inner end portion outer peripheral surface of the core member. The space between the outer peripheral surface of the inner end portion of the core member is completely sealed.
[0004]
[Patent Document 1]
JP 2001-254884 A (3rd to 5th pages, FIG. 2)
[0005]
[Problems to be solved by the invention]
However, in the case of the conventional configuration, the inner peripheral surface of the joint body and the outer peripheral surface of the inner end portion of the core member are in close contact, and the inner end portion of the core member is substantially fixed in the joint main body. For this reason, when a bending stress is applied to the resin pipe, the resin pipe is deformed according to the bending stress. Accordingly, there is a problem that a gap is generated between the seal ring fitted in the receiving groove on the outer peripheral surface of the core member and the inner peripheral surface of the end portion of the resin pipe, and there is a possibility that water leaks through the portion.
[0006]
The present invention has been made paying attention to such problems existing in the prior art. An object of the invention is to provide a joint capable of preventing water leakage by preventing deformation of the resin pipe and eliminating a gap between the outer peripheral surface of the core member and the inner peripheral surface of the resin pipe.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the joint according to the first aspect of the present invention has a cylindrical shape, a tubular body is connected to the base end portion, and a resin pipe is inserted and connected to the distal end portion. The inner peripheral surface of the central portion is formed in a stepped shape in which the inner diameter of the distal end portion is larger than the inner diameter of the base end portion, and a joint body provided with a contact surface on which the tip of the resin pipe is in contact with the stepped portion; It has a substantially cylindrical shape, the inner end is inserted into the base end of the joint body, the outer end is located in the tip of the joint body, and the outer peripheral surface of the center is the outer end of the outer diameter of the inner end. The outer surface of the joint body is formed in a stepped shape, and the stepped portion is provided with an engagement surface with which the tip of the resin pipe is engaged, and between the outer peripheral surface of the inner end portion and the inner peripheral surface of the base end portion of the joint body. Is provided with a sealing means for sealing between the two and a seal for sealing between the outer peripheral surface of the outer end and the inner peripheral surface of the resin pipe. A core member provided with a screw mechanism and a holding means provided at the distal end portion of the joint main body for preventing the resin pipe from coming off and holding the outer peripheral surface of the inner end portion of the core member and the proximal end portion of the joint main body. A gap is provided between the peripheral surface and the core member to allow movement of the core member in a direction intersecting the axis of the joint body following the deformation caused by the bending stress applied to the resin pipe.
[0008]
According to a second aspect of the present invention, there is provided the joint according to the first aspect, wherein a through-hole extending in a direction perpendicular to the axis of the joint main body is formed in the vicinity of the contact surface of the joint main body. An extrusion pin is inserted and supported in the through hole so that the resin pipe inserted from the tip of the joint body comes into contact with the through hole and can be seen from the outer peripheral surface of the joint body.
[0009]
The joint according to a third aspect of the present invention is the joint according to the first or second aspect, wherein the core member is sealed in a state where the inner end portion of the core member is inserted into the base end portion of the joint body. The distance from the means to the engagement surface is set to be longer than the distance from the contact surface of the joint body to the resin pipe contact portion of the extrusion pin.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 1 and 2, the joint body 11 has a substantially cylindrical shape, and a first male screw portion 12 is threaded on the outer peripheral surface of the base end portion, and can be screwed into a pipe body such as a water pipe (not shown). It has become. The inner peripheral surface of the base end portion of the joint main body 11 is formed in a stepped shape in which the inner diameter of the distal end portion is larger than the inner diameter of the base end portion, and the step portion serves as the first contact surface 13.
[0011]
The inner peripheral surface of the central portion in the direction of the axis 14 of the joint body 11 is formed in a step shape in which the inner diameter of the distal end portion is larger than the inner diameter of the base end portion, and the step portion serves as the second contact surface 15. With the second contact surface 15 as a boundary, a space into which the resin pipe 16 or the like is inserted is formed on the distal end side of the joint body 11 with respect to the second contact surface 15. In addition, a first chamfered portion 17 that is reduced in diameter toward the proximal end side of the joint body 11 is provided at the inner edge of the second contact surface 15.
[0012]
A through-hole 18 having a substantially columnar shape is formed at one point slightly on the tip side from the second contact surface 15 so as to extend in a direction orthogonal to the axis 14 of the joint body 11. A first step portion 18a is formed on the inner peripheral surface of the through hole 18, and the hole diameter above the first step portion 18a is larger than the hole diameter below the first step portion 18a. A collar 19 having a substantially cylindrical shape is fitted above the first stepped portion 18a, a second stepped portion 19a is provided on the inner peripheral surface thereof, and an annular recess 19b is provided inside the second stepped portion 19a. Is formed. An extrusion pin 20 having a substantially cylindrical shape for visually confirming the insertion state of the resin pipe 16 into the joint main body 11 is inserted and supported in the through hole 18 through the collar 19. The inner end portion of the push pin 20 has a conical shape, and a tapered surface 20a that is reduced in diameter toward the inner side is formed. In addition, a large diameter portion 21 is formed at an intermediate portion of the push pin 20, and the large diameter portion 21 slides on the annular recess 19 b so that the push pin 20 can reciprocate in the through hole 18. Has been.
[0013]
The reciprocating motion of the push pin 20 in the through hole 18 is such that the inner end surface of the large diameter portion 21 of the push pin 20 engages with the first stepped portion 18a of the through hole 18 and the outer end surface of the large diameter portion 21 is colored. It is regulated between 19 and the position where it engages with the second step portion 19a. That is, the position where the outer end portion of the push pin 20 is immersed in the through hole 18 and the inner end portion protrudes inward from the through hole 18, and the outer end portion of the push pin 20 is outside the outer peripheral surface of the joint body 11. And the inner end portion can be displaced between the position where the inner end portion is immersed in the through hole 18. Further, the outer peripheral surface of the push pin 20 is colored in red, and when the push pin 20 protrudes outward from the outer peripheral surface of the joint body 11, the outer end portion of the push pin 20 is easily visible.
[0014]
As shown in FIG. 2, before the resin pipe 16 is inserted into the joint body 11, the inner end surface of the large diameter portion 21 of the push pin 20 is engaged with the first step portion 18 a of the through hole 18 and the push pin. The outer end surface of 20 and the outer peripheral surface of the joint body 11 are flush with each other. On the other hand, as shown in FIG. 1, when the tip of the resin pipe 16 comes into contact with the second contact surface 15, the outer end surface of the large-diameter portion 21 of the push pin 20 becomes the second step portion 19 a of the collar 19. In addition to engaging, the outer end portion of the push pin 20 protrudes outward from the outer peripheral surface of the joint body 11.
[0015]
A female threaded portion 22 is threaded on the inner peripheral surface of the distal end portion of the joint body 11, and a second male threaded portion 24 threaded on the outer peripheral surface of the distal end portion of the substantially cylindrical push ring 23 is threadedly engaged. A push ring 23 is attached to the tip of the main body 11. An insertion hole 25 is formed through the center of the push ring 23, and a second chamfered portion whose diameter decreases from the insertion hole side end edge toward the inside of the joint body 11 in the direction of the axis 14 on the inner peripheral surface of the push ring 23. 26 is provided.
[0016]
In the inner peripheral portion of the joint body 11, a locking step portion 27 is formed over the entire inner periphery on the proximal end side with respect to the female screw portion 22. A pair of lock rings 28 as holding means for preventing and retaining the resin pipe 16 is interposed between the locking step portion 27 and the front end surface of the push ring 23 with an annular spacer 29 interposed therebetween. It is pinched by. As shown in FIG. 3, the lock ring 28 includes a base ring 28a formed of an annular shape made of a metal material such as stainless steel, and a plurality of restrictions protruding from the base ring 28a inward at the same length and at a constant angle. Each piece is composed of a piece 28b.
[0017]
When a pulling force is applied to the resin pipe 16 connected in the joint body 11, the tip of each regulating piece 28 b of both lock rings 28 bites into the outer peripheral surface of the resin pipe 16, so that the resin pipe 16 The main body 11 is held so as not to come off. For this reason, the joint is configured as a one-touch joint that allows the resin pipe 16 to be inserted only by the operation of inserting the resin pipe 16 into the joint body 11.
[0018]
As shown in FIG. 2, the core member 30 has a substantially cylindrical shape, and an inner end portion thereof is inserted into a proximal end portion of the joint body 11. A resin pipe insertion space 31 is provided between the inner peripheral surface of the distal end portion of the joint body 11 and the outer peripheral surface of the outer end portion of the core member 30, and the thickness of the resin pipe insertion space 31 is substantially the same as the thickness of the resin pipe 16. Is set. The outer peripheral surface of the core member 30 is formed in a stepped shape in which the outer diameter of the outer end portion is smaller than the outer diameter of the inner end portion. The distance between the engagement surface 32 and the inner end surface of the core member 30 in the direction of the axis 14 of the joint body 11 is the direction of the axis 14 between the second contact surface 15 and the first contact surface 13 in the joint body 11. It is formed approximately the same as the distance to. As shown in FIG. 1, when the resin pipe 16 is connected to the joint body 11, the tip of the resin pipe 16 comes into contact with the second contact surface 15 in the joint body 11 and the engagement surface of the core member 30. 32 is engaged.
[0019]
A pair of first accommodation grooves 33 are provided on the inner end side of the engagement surface 32, and an O-ring 34 as a sealing means made of a rubber material and having a circular cross section is fitted in each first accommodation groove 33. Has been. Then, the outer peripheral surface of each O-ring 34 is brought into close contact with the inner peripheral surface of the base end portion of the joint main body 11, so that the space between the inner peripheral surface of the base end portion of the joint main body 11 and the outer peripheral surface of the inner end portion of the core member 30 is established. It is designed to be sealed. Further, a gap 35 having a uniform spacing in the direction of the axis 14 is provided between the outer peripheral surface of the inner end portion of the core member 30 and the inner peripheral surface of the base end portion of the joint body 11. The gap 35 follows the deformation of the resin pipe 16 due to the bending stress applied to the resin pipe 16 connected to the joint body 11 and allows the movement of the core member 30 in the direction intersecting the axis 14 of the joint body 11. belongs to. Therefore, the gap 35 must be set so as to be larger than a design gap necessary for inserting the inner end portion of the core member 30 into the proximal end portion of the joint body 11. Specifically, the gap 35 is preferably set to 0.05 to 0.5 mm, more preferably 0.1 to 0.2 mm.
[0020]
When the gap 35 is less than 0.05 mm, the outer peripheral surface of the inner end portion of the core member 30 and the inner peripheral surface of the base end portion of the joint body 11 are in close contact with each other, and the core member 30 is interposed via the inner end portion. In the joint body 11. For this reason, when a bending stress is applied to the resin pipe 16 connected to the joint body 11, the movement of the core member 30 in the direction intersecting the axis 14 of the joint body 11 is suppressed, and only the resin pipe 16. Deforms according to the bending stress. Therefore, a gap is formed between the outer peripheral surface of the outer end portion of the core member 30 and the inner peripheral surface of the end portion of the resin pipe 16, and there is a possibility that water leaks through this gap. On the other hand, if it exceeds 0.5 mm, it becomes difficult to maintain the seal state between the outer peripheral surface of the inner end portion of the core member 30 and the inner peripheral surface of the base end portion of the joint body 11 by the seal ring 39. There is a risk of water leaking through. In addition, the temporary fixing of the core member 30 in the joint body 11 becomes insufficient, and when the resin pipe 16 is inserted into the joint body 11, the core member 30 may be rattled and difficult to connect. There is.
[0021]
The distance (a) from the O-ring 34 on the distal end side to the engagement surface 32 is such that the distal end of the resin pipe 16 inserted into the joint body 11 abuts on the push pin 20 and the outer end portion thereof is the joint body. 11 is set to be longer than the distance (b) from the resin pipe contact portion 37 of the extrusion pin 20 to the engagement surface 32 when the maximum amount protrudes outward from the outer peripheral surface of 11. Therefore, even when the tip of the resin pipe 16 does not contact the second contact surface 15 and is positioned between the tip of the tapered surface 20a of the push pin 20 and the second contact surface 15, a pair of O-rings The seal state between the inner peripheral surface of the base end portion of the joint body 11 and the outer peripheral surface of the inner end portion of the core member 30 is maintained by 34.
[0022]
The outer end side of the engaging surface 32 is a cylindrical tube portion 36, and the outer diameter thereof is substantially the same as the inner diameter of the resin pipe 16. Further, a pair of second receiving grooves 38 are provided around the outer peripheral surface of the outer end portion of the core member 30, that is, the outer peripheral surface of the cylindrical portion 36, along the direction of the axis 14 of the joint body 11. Is fitted with a seal ring 39 constituting a seal mechanism. As shown in FIGS. 2 and 3, the seal ring 39 is formed with a protruding portion 39a that protrudes radially outward from the outer peripheral surface of the cylindrical portion 36, and the cylindrical portion 36 is located on the outer end side of the protruding portion 39a. A flat portion 39b having an outer peripheral surface formed substantially flush with the outer peripheral surface is provided. When the resin pipe 16 is inserted and connected to the joint main body 11, the outer peripheral surface of each seal ring 39 is brought into close contact with the inner peripheral surface of the resin pipe 16, so that the inner peripheral surface of the resin pipe 16 and the cylindrical portion 36. The space between the outer peripheral surfaces of the two is sealed.
[0023]
The joint of this embodiment is constituted by the joint body 11, the core member 30 fitted in the joint body 11, the lock ring 28 for retaining the resin pipe 16 inserted and connected to the joint body 11, and the like. Has been.
[0024]
Next, the operation of the joint will be described below.
Now, when assembling a joint as shown in FIG. 2, first, the core member 30 is inserted into the joint body 11 as shown in FIG. At this time, the first chamfered portion 17 in the joint main body 11 serves as an insertion guide for the core member 30, and the core member 30 is inserted until the inner end surface abuts on the first contact surface 13 in the joint main body 11. Next, the pair of lock rings 28 in which the spacers 29 are interposed are inserted into the joint main body 11 and locked to the locking step portion 27. Then, the second male screw portion 24 of the push ring 23 is screwed to the female thread portion 22 on the inner peripheral surface of the tip end portion of the joint main body 11, the push ring 23 is attached to the tip end portion of the joint main body 11, and the tip end surface and the locking step portion are attached. A pair of lock rings 28 are sandwiched between the two.
[0025]
Next, when the resin pipe 16 is connected to the joint body 11, first, the tip of the resin pipe 16 is inserted into the resin pipe insertion space 31. At this time, the second chamfered portion 26 of the push ring 23 serves as an insertion guide for the resin pipe 16, and the cylindrical portion 36 of the core member 30 is fitted into the end of the resin pipe 16. As shown in FIG. 4, when the end portion of the resin pipe 16 passes through the seal ring 39, the flat portion 39b of the seal ring 39 is first inserted into the resin pipe 16, and then the protruding portion 39a is inward. Inserted. When the resin pipe 16 is further inserted into the inner side of the joint body 11, the tips of the restricting pieces 28b of the lock rings 28 are slidably contacted with the resin pipe 16 while being pressed outward. At this time, the resin pipe 16 is inserted into the inner side of the joint body 11 against the inward biasing force based on the force of returning to the original of each regulating piece 28b.
[0026]
As shown in FIG. 5, when the resin pipe 16 is further inserted into the inner side of the joint body 11, the seal ring 39 fitted in the other second accommodation groove 38 is similarly inserted into the resin pipe 16. The tip of the resin pipe 16 comes into contact with the tapered surface 20a of the extrusion pin 20. Since this taper surface 20a is reduced in diameter toward the inner side, when the force is received from the side by the resin pipe 16, the force is converted into a radial force, and the large-diameter portion 21 of the extrusion pin 20 is annular. It moves outward in the recess 19b. At this time, the outer end portion of the push pin 20 protrudes outward from the state of being immersed in the through hole 18, and the red coloring of the outer peripheral surface of the push pin 20 is visually recognized. Then, as the resin pipe 16 is further pushed inward, the extrusion pin 20 gradually moves outward through the large diameter portion 21, and when the tip of the resin pipe 16 slides to the tip of the tapered surface 20a, The protrusion amount of the outer end portion of the push pin 20 is maximized.
[0027]
Subsequently, as shown in FIG. 1, the resin pipe 16 is moved inwardly of the joint body 11 until the tip of the resin pipe 16 comes into contact with the second contact surface 15 in the joint body 11 and the engagement surface 32 of the core member 30. Insert further to the side. Thereafter, as indicated by a two-dot chain line, when bending stress is applied to the resin pipe 16 connected to the joint body 11, the core member 30 is allowed to move following the deformation of the resin pipe 16 by the gap 35. Further, when a pulling force is applied to the resin pipe 16, the tip of each regulating piece 28 b of both the lock rings 28 bites into the outer peripheral surface of the resin pipe 16, so that the resin pipe 16 is retained in the joint body 11. . When a force in the pull-out direction is applied to the core member 30 fitted in the joint main body 11, the engagement surface 32 is engaged with the tip of the resin pipe 16 to restrict the movement of the core member 30. The
[0028]
The effects exhibited by the above embodiment will be described below.
The joint of the present embodiment is configured by fitting the core member 30 into the joint body 11, and there is a gap between the inner end portion outer peripheral surface of the core member 30 and the base end portion inner peripheral surface of the joint main body 11. 35 is provided. For this reason, when bending stress is applied to the resin pipe 16 connected to the joint body 11, the core member 30 follows the deformation of the resin pipe 16 by the gap 35 in the direction intersecting the axis 14 of the joint body 11. The movement is allowed and deformation of the resin pipe 16 can be prevented. At this time, since the outer peripheral surface of each seal ring 39 is kept in close contact with the inner peripheral surface of the end portion of the resin pipe 16, a gap between the outer peripheral surface of the core member 30 and the inner peripheral surface of the resin pipe 16 is maintained. Water leakage can be prevented by eliminating
[0029]
A through hole 18 is provided slightly on the tip side from the second contact surface 15 in the joint body 11, and an extrusion pin 20 is inserted and supported in the through hole 18. When the resin pipe 16 is inserted into the joint body 11, the outer end portion of the push pin 20 protrudes from the through hole 18 by the tip of the resin pipe 16 coming into contact with the tapered surface 20 a of the push pin 20. It is like that. For this reason, the insertion state of the resin pipe 16 can be easily visually recognized depending on whether or not the outer end portion of the push pin 20 protrudes outward from the outer peripheral surface of the joint body 11.
[0030]
Furthermore, the distance (a) from the O-ring 34 on the distal end side of the core member 30 to the engagement surface 32 is longer than the distance (b) from the resin pipe contact portion 37 of the extrusion pin 20 to the engagement surface 32. Is set. For this reason, even when the front end of the resin pipe 16 is stopped between the resin pipe contact portion 37 and the second contact surface 15 of the extrusion pin 20, the inner periphery of the base end portion of the joint main body 11 by the pair of O-rings 34. The sealing state between the surface and the outer peripheral surface of the inner end portion of the core member 30 is maintained, and water leakage through the gap 35 between them can be prevented.
[0031]
The seal ring 39 fitted in the second receiving groove 38 is provided with a flat portion 39b having an outer peripheral surface substantially flush with the outer peripheral surface of the cylindrical portion 36 of the core member 30, and the flat portion A protrusion 39a is provided on the inner end side than 39b. For this reason, when the tip of the resin pipe 16 hits the protruding portion 39 a of the seal ring 39, the flat portion 39 b of the seal ring 39 is already inserted in the resin pipe 16. Therefore, even if the tip of the resin pipe 16 is cut obliquely and the tip of the resin pipe 16 hits the projecting portion 39a of the seal ring 39, the resin pipe 16 is pushed further inwardly from the second housing groove 38. The escape of the seal ring 39 can be effectively suppressed.
[0032]
The seal between the inner peripheral surface of the end portion of the resin pipe 16 and the outer peripheral surface of the cylindrical portion 36 of the core member 30 is sealed by a pair of seal rings 39 arranged side by side along the direction of the axis 14 of the joint body 11. Therefore, high sealing performance can be exhibited.
[0033]
-Since the outer peripheral surface of the extrusion pin 20 is colored red, the outer end portion of the extrusion pin 20 when protruding outward from the outer peripheral surface of the joint body 11 can be easily visually confirmed.
[0034]
In addition, this embodiment can also be changed and embodied as follows.
A configuration in which the distance (a) from the O-ring 34 on the distal end side of the core member 30 to the engagement surface 32 is set to be longer than the distance from the outer end of the push pin 20 in the axis 14 direction to the engagement surface 32. It may be adopted. In such a configuration, even when the connection of the resin pipe 16 is completed with the outer end of the push pin 20 protruding slightly outward from the outer peripheral surface of the joint body 11, The sealing performance between the outer peripheral surface of the end portion and the inner peripheral surface of the base end portion of the joint body 11 can be reliably maintained.
[0035]
-The shape of the inner end portion of the extrusion pin 20 may be changed to a kamaboko shape, a triangular prism shape, or the like.
The inner end portion of the core member 30 may be formed in a tapered shape that is slightly reduced in diameter as it goes outward in the direction of the axis 14 of the joint body 11. That is, the gap 35 is slightly enlarged as it goes outward in the direction of the axis 14 of the joint body 11. In this configuration, when a bending stress is applied to the resin pipe 16 connected to the joint body 11, the core member 30 has a larger allowable range in which the deformation of the resin pipe 16 can be followed. Can be effectively prevented.
[0036]
-You may comprise the holding | maintenance means of the coupling of this embodiment as follows.
That is, on the inner peripheral surface of the distal end portion of the joint body 11, a tapered surface is formed that increases in diameter as it goes outward in the direction of the axis 14 of the joint body 11. A slit extending in the direction of the axis 14 as a holding means is formed between the joint body 11 and the push ring 23, and a pressing ring having a taper surface corresponding to the taper surface in the joint body 11 is provided on the outer peripheral surface thereof. Is done.
[0037]
When the resin pipe 16 is connected to the joint, the resin pipe 16 is inserted into the joint body 11 and then the push ring 23 is fastened to the joint body 11 using a spanner or the like. At this time, the pressing ring is pushed into the joint body 11 while being reduced in diameter by being guided by the tapered surface in the joint body 11, and the inner peripheral surface of the pressing ring is in pressure contact with the outer peripheral surface of the resin pipe 16. The resin pipe 16 is held in the joint body 11 so as not to come off.
[0038]
-You may change the shape of the seal ring 39 fitted to each 2nd accommodation groove 38 provided in the cylinder part 36 of the core member 30 in cross-sectional circular shape, cross-sectional elliptical shape, etc. FIG.
-You may employ | adopt the structure which provides the sealing means which seals between the inner end part outer peripheral surfaces of the core member 30 in the proximal end inner peripheral surface of the coupling main body 11. FIG. That is, a pair of first accommodation grooves 33 are provided around the inner peripheral surface of the base end portion of the joint body 11, and an O-ring 34 is fitted in each first accommodation groove 33.
[0039]
The number of seal rings 39 for sealing between the outer peripheral surface of the outer end portion of the core member 30 and the inner peripheral surface of the end portion of the resin pipe 16 is not limited to a pair, and may be one or three or more. Good.
[0040]
-You may color the outer peripheral surface of the extrusion pin 20 with colors other than red, such as yellow and green.
Further, the technical idea that can be grasped from the embodiment will be described below.
The core member is temporarily fixed in the joint main body by a sealing means provided between an outer peripheral surface of the inner end portion and an inner peripheral surface of the base end portion of the joint main body. The joint according to item. According to this configuration, the core member can be inserted and connected to the joint body in advance.
[0041]
A seal ring is used for the seal mechanism provided in the core member, and the seal ring is formed with a protruding portion that protrudes radially outward from the outer peripheral surface of the outer end portion, and the outer end side of the protruding portion. The joint according to any one of claims 1 to 3, wherein a flat portion having an outer peripheral surface formed substantially flush with an outer peripheral surface of the outer end portion is provided. According to this configuration, the sealing mechanism can be reliably maintained when the resin pipe is connected to the joint body.
[0042]
A locking step is formed on the inner periphery of the joint body, a push ring is screwed to the tip, and a resin pipe is prevented from slipping between the lock step and the tip surface of the push ring. The joint according to any one of claims 1 to 3, wherein holding means for holding is interposed. According to this configuration, the resin pipe can be easily inserted into the joint body, and the resin pipe can be effectively prevented from coming off.
[0043]
【The invention's effect】
As described in detail above, the present invention has the following effects.
According to the joint of the first aspect of the present invention, it is possible to prevent deformation of the resin pipe and to prevent water leakage by eliminating a gap between the outer peripheral surface of the core member and the inner peripheral surface of the resin pipe.
[0044]
According to the joint of the invention of the second aspect, in addition to the effect of the invention of the first aspect, the insertion state of the resin pipe can be easily visually confirmed.
According to the joint of the invention described in claim 3, in addition to the effect of the invention described in claim 1 or claim 2, between the outer peripheral surface of the inner end portion of the core member and the inner peripheral surface of the base end portion of the joint body. The sealing performance can be reliably maintained.
[Brief description of the drawings]
FIG. 1 is a partially cutaway side view showing a state in which a resin pipe is connected to a joint according to an embodiment.
FIG. 2 is a partially cutaway side view showing a joint.
FIG. 3 is an exploded side sectional view showing a joint.
FIG. 4 is a partially cutaway side view showing a state in which a resin pipe has started to be inserted into a joint body.
FIG. 5 is a partially cutaway side view showing a state in which a tip of a resin pipe is in contact with an extrusion pin.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Joint body, 14 ... Axis, 15 ... 2nd contact surface as contact surface, 16 ... Resin pipe, 18 ... Through-hole, 20 ... Extrusion pin, 28 ... Lock ring as holding means, 30 ... Core member , 32 ... engagement surface, 34 ... O-ring as a seal ring, 35 ... gap, 37 ... resin pipe contact portion, 39 ... seal ring constituting a seal mechanism.

Claims (3)

筒状をなし、基端部には管体が接続され、先端部には樹脂パイプが挿入されて接続されるとともに、中央部内周面は基端部の内径よりも先端部の内径が大きくなる段差状に形成され、その段差部分に樹脂パイプの先端が当接される当接面が設けられた継手本体と、略円筒状をなし、内端部は継手本体の基端部内に挿着され、外端部は継手本体の先端部内に位置し、中央部外周面は内端部の外径よりも外端部の外径が小さくなる段差状に形成され、その段差部分に樹脂パイプの先端が係合される係合面が設けられ、内端部外周面と継手本体の基端部内周面との間には両者間をシールするシール手段が設けられるとともに、外端部外周面には樹脂パイプ内周面との間をシールするシール機構が設けられたコア部材と、継手本体の先端部に設けられ、樹脂パイプを抜け止め保持するための保持手段とを備え、前記コア部材の内端部外周面と継手本体の基端部内周面との間には、樹脂パイプに加わる曲げ応力による変形に追従して継手本体の軸線と交差する方向へのコア部材の動きを許容する空隙が設けられていることを特徴とする継手。It has a cylindrical shape, a tube is connected to the base end, a resin pipe is inserted and connected to the tip, and the inner peripheral surface of the central part has a larger inner diameter at the tip than the inner diameter of the base. The joint body is formed in a stepped shape and is provided with an abutting surface on which the tip of the resin pipe is in contact with the stepped portion, and has a substantially cylindrical shape, and the inner end portion is inserted into the base end portion of the joint body. The outer end is located in the tip of the joint body, and the outer peripheral surface of the center is formed in a stepped shape in which the outer diameter of the outer end is smaller than the outer diameter of the inner end. Is provided between the inner peripheral surface of the inner end and the inner peripheral surface of the base end of the joint body. A core member provided with a seal mechanism that seals between the inner peripheral surface of the resin pipe and the tip of the joint body Holding means for preventing and holding the resin pipe, and between the outer peripheral surface of the inner end portion of the core member and the inner peripheral surface of the base end portion of the joint body, follows deformation due to bending stress applied to the resin pipe. And a gap allowing movement of the core member in a direction intersecting the axis of the joint body. 前記継手本体の当接面の近傍位置には継手本体の軸線と直交する方向に延びる貫通孔が透設され、該貫通孔には継手本体の先端部から挿入された樹脂パイプが当接することにより継手本体の外周面から突出して視認できるような押出ピンが挿通支持されている請求項１に記載の継手。A through-hole extending in a direction perpendicular to the axis of the joint body is provided in the vicinity of the contact surface of the joint body, and a resin pipe inserted from the tip of the joint body is in contact with the through-hole. The joint according to claim 1, wherein an extrusion pin that protrudes from the outer peripheral surface of the joint body and is visible is inserted and supported. 前記コア部材の内端部が継手本体の基端部内に挿着された状態で、コア部材のシール手段から係合面までの距離は、継手本体の当接面から押出ピンの樹脂パイプ当接部までの距離より長くなるように設定されている請求項１又は請求項２に記載の継手。With the inner end of the core member inserted into the base end of the joint body, the distance from the sealing means of the core member to the engagement surface is the resin pipe contact of the extrusion pin from the contact surface of the joint body. The joint according to claim 1 or 2, wherein the joint is set to be longer than a distance to the portion.
JP2002333753A 2002-11-18 2002-11-18 Fitting Expired - Fee Related JP4145123B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002333753A JP4145123B2 (en) 2002-11-18 2002-11-18 Fitting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002333753A JP4145123B2 (en) 2002-11-18 2002-11-18 Fitting

Publications (2)

Publication Number Publication Date
JP2004169758A JP2004169758A (en) 2004-06-17
JP4145123B2 true JP4145123B2 (en) 2008-09-03

Family

ID=32698382

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002333753A Expired - Fee Related JP4145123B2 (en) 2002-11-18 2002-11-18 Fitting

Country Status (1)

Country Link
JP (1) JP4145123B2 (en)

Cited By (88)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1080590C (en) * 1998-04-29 2002-03-13 中国科学院山西煤炭化学研究所 Double metal cyanide catalyst and its prepn. method
CN1080589C (en) * 1998-04-29 2002-03-13 中国科学院山西煤炭化学研究所 Double metal cyanide catalyst and its prepn. method
CN100419000C (en) * 2001-07-16 2008-09-17 国际壳牌研究有限公司 Double metal complex catalyst
US7786251B2 (en) 2005-08-17 2010-08-31 Asahi Glass Company, Limited Process for producing polyester ether poly- or mono-ol
WO2011089120A1 (en) 2010-01-20 2011-07-28 Bayer Materialscience Ag Method for activating double metal cyanide catalysts for producing polyether carbonate polyols
WO2011101403A1 (en) 2010-02-18 2011-08-25 Bayer Materialscience Ag Process for preparing polyether carbonate polyols with double metal cyanide catalysts and in the presence of metal salts
WO2011117332A1 (en) 2010-03-24 2011-09-29 Bayer Materialscience Ag Method for producing polyether carbonate polyols
WO2011135027A1 (en) 2010-04-30 2011-11-03 Basf Se Polyether polyols, method for producing polyether polyols, and use thereof for producing polyurethanes
WO2011144523A1 (en) 2010-05-18 2011-11-24 Bayer Materialscience Ag Method for producing polyether carbonate polyols
JP2012047280A (en) * 2010-08-27 2012-03-08 Kubota-Ci Co Pipe joint
EP2441788A1 (en) 2010-10-14 2012-04-18 Bayer MaterialScience AG Method for manufacturing polyether polyols
WO2012062683A1 (en) 2010-11-09 2012-05-18 Basf Se Polyetherester polyols
EP2465890A1 (en) 2010-12-17 2012-06-20 Bayer MaterialScience AG Method for producing polyether carbonate polyols with primary hydroxyl end groups and polyurethane polymers prepared thereof
WO2012130760A1 (en) 2011-03-28 2012-10-04 Bayer Materialscience Ag Method for producing flexible polyurethane foam materials
EP2530101A1 (en) 2011-06-01 2012-12-05 Bayer MaterialScience AG Method for manufacturing polyether polyols
EP2548906A1 (en) 2011-07-18 2013-01-23 Bayer MaterialScience AG Method for activating double metal cyanide catalysts to produce polyether polyols
EP2548908A1 (en) 2011-07-18 2013-01-23 Bayer MaterialScience AG Method for manufacturing polyether polyols
EP2548907A1 (en) 2011-07-18 2013-01-23 Bayer MaterialScience AG Method for manufacturing polyether polyols
EP2548905A1 (en) 2011-07-18 2013-01-23 Bayer MaterialScience AG Method for activating double metal cyanide catalysts to produce polyether polyols
WO2013087582A2 (en) 2011-12-16 2013-06-20 Bayer Intellectual Property Gmbh Method for producing polyetherester carbonate polyols
WO2013087583A1 (en) 2011-12-16 2013-06-20 Bayer Intellectual Property Gmbh Method for producing polyether carbonate polyols
EP2703426A1 (en) 2012-08-27 2014-03-05 Bayer MaterialScience AG Method for manufacturing polyether carbonate polyols
EP2703425A1 (en) 2012-08-27 2014-03-05 Bayer MaterialScience AG Method for manufacturing polyether carbonate polyols
EP2730602A1 (en) 2012-11-09 2014-05-14 Bayer MaterialScience AG Method for manufacturing polyether carbonate polyols
WO2014072336A1 (en) 2012-11-09 2014-05-15 Bayer Materialscience Ag Method for producing polyether carbonate polyols
WO2014158791A1 (en) 2013-03-12 2014-10-02 Bayer Materials Science Llc Catalyst for the production of polyols having lower amounts of high molecular weight tail
EP2845872A1 (en) 2013-09-05 2015-03-11 Bayer MaterialScience AG Low viscosity polyether carbonate polyols with side chains
EP2845871A1 (en) 2013-09-05 2015-03-11 Bayer MaterialScience AG Crosslinking of polyether carbonate polyols containing double bonds by the addition of mercaptans
EP2845873A1 (en) 2013-09-05 2015-03-11 Bayer MaterialScience AG Radical cross-linking of polyether carbonate polyols containing low electron and electron-rich double bonds
EP2851384A1 (en) 2013-09-20 2015-03-25 Bayer MaterialScience AG Branched polyether carbonate polyols and method for their preparation
EP2865700A1 (en) 2013-10-23 2015-04-29 Bayer MaterialScience AG Method for manufacturing polyether carbonate polyols
EP2894180A1 (en) 2014-01-08 2015-07-15 Bayer MaterialScience AG Polymer Polyols comprising a Polyether Carbonate Polyol as the Base Polyol
EP3023447A1 (en) 2014-11-18 2016-05-25 Covestro Deutschland AG Method for manufacturing polyether carbonate polyols
US9375509B2 (en) 2011-12-20 2016-06-28 Medical Adhesive Revolution Gmbh Isocyanate-functional prepolymer for a biologically degradable fabric adhesive
EP3098250A1 (en) 2015-05-26 2016-11-30 Covestro Deutschland AG Method for manufacturing polyether carbonate polyols
US9580540B2 (en) 2011-12-20 2017-02-28 Adhesys Medical Gmbh Hydroxy amino polymer and use thereof in polyurea/polyurethane tissue adhesives
US9714216B2 (en) 2013-11-22 2017-07-25 Covestro Deutschland Ag Use of urethane alcohols for preparation of polyether polyols
WO2018026571A1 (en) 2016-08-05 2018-02-08 Covestro Llc Systems and processes for producing polyether polyols
KR101836133B1 (en) * 2017-08-04 2018-03-08 (주)아람엔지니어링 Piping connection device of fire fighting
WO2018069350A1 (en) 2016-10-12 2018-04-19 Covestro Deutschland Ag Method for producing a multiple bond-containing prepolymer as elastomer precursor
WO2018069348A1 (en) 2016-10-12 2018-04-19 Covestro Deutschland Ag Process for producing elastomers
US9957352B2 (en) 2013-12-17 2018-05-01 Covestro Deutschland Ag Use of urethane alcohols for preparing polyether carbonate polyols
US9957354B2 (en) 2013-09-05 2018-05-01 Covestro Deutschland Ag Higher functional polyether carbonate polyols obtained using branching molecules
EP3336130A1 (en) 2016-12-19 2018-06-20 Covestro Deutschland AG Method for manufacturing polyether thiocarbonate polyols
EP3424967A1 (en) 2017-07-07 2019-01-09 Covestro Deutschland AG Method for manufacturing functionalised polyoxyalkylene polyoles
EP3461852A1 (en) 2017-09-28 2019-04-03 Covestro Deutschland AG Method for producing a polymer containing multiple bonds as elastomer prestage
EP3473658A1 (en) 2017-10-18 2019-04-24 Covestro Deutschland AG Diblock copolymers and their use as surfactants
WO2019076862A1 (en) 2017-10-18 2019-04-25 Covestro Deutschland Ag Diblock copolymeres and their use as surfactants
EP3489278A1 (en) 2017-11-23 2019-05-29 Covestro Deutschland AG High molecular weight polyoxyethylene with deep glass temperature made using the grafting through method
EP3502162A1 (en) 2017-12-19 2019-06-26 Covestro Deutschland AG Method for manufacturing polyether ester polyols
WO2019158592A1 (en) 2018-02-16 2019-08-22 Covestro Deutschland Ag Process for preparing polyether carbonate polyols
EP3587469A1 (en) 2018-06-22 2020-01-01 Covestro Deutschland AG Method for the preparation of polyol
EP3597690A1 (en) 2018-07-19 2020-01-22 Covestro Deutschland AG Heterocycle-functional polyether or polyether carbonates and method for their manufacture
EP3604320A1 (en) 2018-08-01 2020-02-05 Covestro Deutschland AG Flame retardant phosphorous functional polyether carbonate polyols and method for their preparation
EP3608348A1 (en) 2018-08-07 2020-02-12 Covestro Deutschland AG Method for producing an organooxysilyl-crosslinked polymer
EP3608018A1 (en) 2018-08-08 2020-02-12 Covestro Deutschland AG Method for the production of double metal cyanide catalysts
EP3617248A1 (en) 2018-08-30 2020-03-04 Covestro Deutschland AG Method for the separation of gaseous components
EP3643730A1 (en) 2018-10-26 2020-04-29 Covestro Deutschland AG Method for the preparation of polyoxymethylene polyoxyalkylene block copolymers
EP3670571A1 (en) 2018-12-21 2020-06-24 Covestro Deutschland AG Method for producing a polyester-polyetherpolyol block copolymer
EP3670557A1 (en) 2018-12-21 2020-06-24 Covestro Deutschland AG Method for producing a polyoxyalkylenpolyesterpolyol
EP3670568A1 (en) 2018-12-21 2020-06-24 Covestro Deutschland AG Method for producing a polyester
EP3683251A1 (en) 2019-01-15 2020-07-22 Covestro Deutschland AG Process for the preparation of diol
US10836858B2 (en) 2016-06-22 2020-11-17 Covestro Deutschland Ag Method for producing polyether carbonate polyols
EP3747927A1 (en) 2019-06-05 2020-12-09 Covestro Deutschland AG Method for continuous production of polyoxyalkylenpolyols
EP3750940A1 (en) 2019-06-11 2020-12-16 Covestro Deutschland AG Method for manufacturing polyether carbonate polyols
WO2020249433A1 (en) 2019-06-11 2020-12-17 Covestro Deutschland Ag Method for preparing polyether carbonate polyols
EP3760663A1 (en) 2019-07-05 2021-01-06 Covestro Deutschland AG Method for manufacturing polyether ester carbonate polyols
EP3763768A1 (en) 2019-07-12 2021-01-13 Covestro Deutschland AG Polyether carbonate polyols having narrow segment length distribution
EP3771724A1 (en) 2019-07-31 2021-02-03 Covestro Deutschland AG Process for producing polyether carbonate polyols
WO2021018753A1 (en) 2019-07-31 2021-02-04 Covestro Deutschland Ag Method for producing polyether carbonate polyols
EP3831867A1 (en) 2019-12-04 2021-06-09 Covestro Deutschland AG Process for producing polyether carbonate polyols
WO2021110691A1 (en) 2019-12-04 2021-06-10 Covestro Intellectual Property Gmbh & Co. Kg Process for producing polyether carbonate polyols
EP3838938A1 (en) 2019-12-18 2021-06-23 Covestro Deutschland AG Method for the preparation of polyoxymethylene polyoxyalkylene copolymers
EP3878885A1 (en) 2020-03-10 2021-09-15 Covestro Deutschland AG Process for producing polyether carbonate polyols
EP3882297A1 (en) 2020-03-17 2021-09-22 Covestro Deutschland AG Process for producing polyether carbonate polyols
EP3885390A1 (en) 2020-03-25 2021-09-29 Covestro Deutschland AG Method for producing an ether estol
EP3889204A1 (en) 2020-04-02 2021-10-06 Covestro Deutschland AG Method for producing a polyoxyalkylene carbonate polyol
EP3922659A1 (en) 2020-06-08 2021-12-15 Covestro Deutschland AG Process for producing polyether carbonate polyols
EP3922661A1 (en) 2020-06-12 2021-12-15 Covestro Deutschland AG Method for the preparation of polyoxymethylene polyoxyalkylene copolymers
EP3922660A1 (en) 2020-06-08 2021-12-15 Covestro Deutschland AG Process for producing polyether carbonate polyols
EP3988600A1 (en) 2020-10-20 2022-04-27 Covestro Deutschland AG Method for the preparation of polyether carbonate alcohols
WO2022189318A1 (en) 2021-03-12 2022-09-15 Covestro Deutschland Ag Process for purifying cyclic carbonates
WO2022258570A1 (en) 2021-06-10 2022-12-15 Covestro Deutschland Ag Process for producing polyoxymethylene-polyoxyalkylene copolymers
EP4151669A1 (en) 2021-09-15 2023-03-22 Covestro Deutschland AG Process for producing polyether carbonate polyols
EP4169963A1 (en) 2021-10-18 2023-04-26 Covestro LLC Processes and production plants for producing polymer polyols
EP4177294A1 (en) 2021-11-05 2023-05-10 Covestro LLC Processes for producing polyols
EP4302874A1 (en) 2022-07-04 2024-01-10 Covestro Deutschland AG Method for the production of double metal cyanide catalysts
EP4397691A1 (en) 2023-01-06 2024-07-10 Covestro Deutschland AG Method for producing polyoxyalkylene polyol

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5325508B2 (en) * 2008-09-11 2013-10-23 株式会社タブチ Pipe fitting

Cited By (143)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1080590C (en) * 1998-04-29 2002-03-13 中国科学院山西煤炭化学研究所 Double metal cyanide catalyst and its prepn. method
CN1080589C (en) * 1998-04-29 2002-03-13 中国科学院山西煤炭化学研究所 Double metal cyanide catalyst and its prepn. method
CN100419000C (en) * 2001-07-16 2008-09-17 国际壳牌研究有限公司 Double metal complex catalyst
US7786251B2 (en) 2005-08-17 2010-08-31 Asahi Glass Company, Limited Process for producing polyester ether poly- or mono-ol
WO2011089120A1 (en) 2010-01-20 2011-07-28 Bayer Materialscience Ag Method for activating double metal cyanide catalysts for producing polyether carbonate polyols
WO2011101403A1 (en) 2010-02-18 2011-08-25 Bayer Materialscience Ag Process for preparing polyether carbonate polyols with double metal cyanide catalysts and in the presence of metal salts
WO2011117332A1 (en) 2010-03-24 2011-09-29 Bayer Materialscience Ag Method for producing polyether carbonate polyols
WO2011135027A1 (en) 2010-04-30 2011-11-03 Basf Se Polyether polyols, method for producing polyether polyols, and use thereof for producing polyurethanes
WO2011144523A1 (en) 2010-05-18 2011-11-24 Bayer Materialscience Ag Method for producing polyether carbonate polyols
JP2012047280A (en) * 2010-08-27 2012-03-08 Kubota-Ci Co Pipe joint
EP2441788A1 (en) 2010-10-14 2012-04-18 Bayer MaterialScience AG Method for manufacturing polyether polyols
WO2012049162A1 (en) 2010-10-14 2012-04-19 Bayer Materialscience Ag Method for the production of polyether carbonate polyols
US9062156B2 (en) 2010-10-14 2015-06-23 Bayer Intellectual Property Gmbh Process for the production of polyether carbonate polyols
WO2012062683A1 (en) 2010-11-09 2012-05-18 Basf Se Polyetherester polyols
EP2465890A1 (en) 2010-12-17 2012-06-20 Bayer MaterialScience AG Method for producing polyether carbonate polyols with primary hydroxyl end groups and polyurethane polymers prepared thereof
WO2012130760A1 (en) 2011-03-28 2012-10-04 Bayer Materialscience Ag Method for producing flexible polyurethane foam materials
EP2530101A1 (en) 2011-06-01 2012-12-05 Bayer MaterialScience AG Method for manufacturing polyether polyols
WO2012163944A1 (en) 2011-06-01 2012-12-06 Bayer Intellectual Property Gmbh Method for producing polyether polyols
US11130842B2 (en) 2011-06-01 2021-09-28 Covestro Deutschland Ag Process for the preparation of polyether polyols
EP2548907A1 (en) 2011-07-18 2013-01-23 Bayer MaterialScience AG Method for manufacturing polyether polyols
EP2548908A1 (en) 2011-07-18 2013-01-23 Bayer MaterialScience AG Method for manufacturing polyether polyols
EP2548905A1 (en) 2011-07-18 2013-01-23 Bayer MaterialScience AG Method for activating double metal cyanide catalysts to produce polyether polyols
WO2013010986A1 (en) 2011-07-18 2013-01-24 Bayer Intellectual Property Gmbh Process for the production of polyether carbonate polyols
WO2013011015A1 (en) 2011-07-18 2013-01-24 Bayer Intellectual Property Gmbh Method for producing polyether polyols
WO2013010987A1 (en) 2011-07-18 2013-01-24 Bayer Intellectual Property Gmbh Method for activating double metal cyanide catalysts for the production of polyether carbonate polyols
WO2013011014A1 (en) 2011-07-18 2013-01-24 Bayer Intellectual Property Gmbh Method for activating double metal cyanide catalysts for producing polyether polyols
US9120894B2 (en) 2011-07-18 2015-09-01 Bayer Intellectual Property Gmbh Method for producing polyether polyols
US9249259B2 (en) 2011-07-18 2016-02-02 Bayer Intellectual Property Gmbh Method for activating double metal cyanide catalysts for producing polyether polyols
US9309356B2 (en) 2011-07-18 2016-04-12 Bayer Intellectual Property Gmbh Method for activating double metal cyanide catalysts for the production of polyether carbonate polyols
US9315622B2 (en) 2011-07-18 2016-04-19 Covestro Deutschland Ag Process for the production of polyether carbonate polyols
EP2548906A1 (en) 2011-07-18 2013-01-23 Bayer MaterialScience AG Method for activating double metal cyanide catalysts to produce polyether polyols
WO2013087583A1 (en) 2011-12-16 2013-06-20 Bayer Intellectual Property Gmbh Method for producing polyether carbonate polyols
WO2013087582A2 (en) 2011-12-16 2013-06-20 Bayer Intellectual Property Gmbh Method for producing polyetherester carbonate polyols
US9375509B2 (en) 2011-12-20 2016-06-28 Medical Adhesive Revolution Gmbh Isocyanate-functional prepolymer for a biologically degradable fabric adhesive
US9757492B2 (en) 2011-12-20 2017-09-12 Adhesys Medical Gmbh Hydroxy amino polymer and use thereof in polyurea/polyurethane tissue adhesives
US9580540B2 (en) 2011-12-20 2017-02-28 Adhesys Medical Gmbh Hydroxy amino polymer and use thereof in polyurea/polyurethane tissue adhesives
US9468701B2 (en) 2011-12-20 2016-10-18 Adhesys Medical Gmbh Isocyanate-functional prepolymer for a biologically degradable fabric adhesive
EP2703425A1 (en) 2012-08-27 2014-03-05 Bayer MaterialScience AG Method for manufacturing polyether carbonate polyols
US9273183B2 (en) 2012-08-27 2016-03-01 Covestro Deutschland Ag Polyether carbonate polyol production method
EP2703426A1 (en) 2012-08-27 2014-03-05 Bayer MaterialScience AG Method for manufacturing polyether carbonate polyols
US9676905B2 (en) 2012-08-27 2017-06-13 Covestro Deutschland Ag Polyether carbonate polyol production method
EP2730602A1 (en) 2012-11-09 2014-05-14 Bayer MaterialScience AG Method for manufacturing polyether carbonate polyols
WO2014072336A1 (en) 2012-11-09 2014-05-15 Bayer Materialscience Ag Method for producing polyether carbonate polyols
WO2014158791A1 (en) 2013-03-12 2014-10-02 Bayer Materials Science Llc Catalyst for the production of polyols having lower amounts of high molecular weight tail
US9708446B2 (en) 2013-09-05 2017-07-18 Covestro Deutschland Ag Cross-linking of polyether carbonate polyols containing double-bonds, by adding mercapto-compounds
EP2845872A1 (en) 2013-09-05 2015-03-11 Bayer MaterialScience AG Low viscosity polyether carbonate polyols with side chains
US9957354B2 (en) 2013-09-05 2018-05-01 Covestro Deutschland Ag Higher functional polyether carbonate polyols obtained using branching molecules
EP2845871A1 (en) 2013-09-05 2015-03-11 Bayer MaterialScience AG Crosslinking of polyether carbonate polyols containing double bonds by the addition of mercaptans
US10179835B2 (en) 2013-09-05 2019-01-15 Covestro Deutschland Ag Radical crosslinking of polyether carbonate polyols that have electron-poor and electron-rich double bonds
US9957353B2 (en) 2013-09-05 2018-05-01 Covestro Deutschland Ag Low viscosity polyether carbonate polyols having side chains
WO2015032717A1 (en) 2013-09-05 2015-03-12 Bayer Materialscience Ag Low viscosity polyether carbonate polyols having side chains
EP2845873A1 (en) 2013-09-05 2015-03-11 Bayer MaterialScience AG Radical cross-linking of polyether carbonate polyols containing low electron and electron-rich double bonds
EP2851384A1 (en) 2013-09-20 2015-03-25 Bayer MaterialScience AG Branched polyether carbonate polyols and method for their preparation
EP2865700A1 (en) 2013-10-23 2015-04-29 Bayer MaterialScience AG Method for manufacturing polyether carbonate polyols
US9714216B2 (en) 2013-11-22 2017-07-25 Covestro Deutschland Ag Use of urethane alcohols for preparation of polyether polyols
US9957352B2 (en) 2013-12-17 2018-05-01 Covestro Deutschland Ag Use of urethane alcohols for preparing polyether carbonate polyols
EP2894180A1 (en) 2014-01-08 2015-07-15 Bayer MaterialScience AG Polymer Polyols comprising a Polyether Carbonate Polyol as the Base Polyol
EP3023447A1 (en) 2014-11-18 2016-05-25 Covestro Deutschland AG Method for manufacturing polyether carbonate polyols
EP3098250A1 (en) 2015-05-26 2016-11-30 Covestro Deutschland AG Method for manufacturing polyether carbonate polyols
WO2016188991A1 (en) 2015-05-26 2016-12-01 Covestro Deutschland Ag Method for producing polyether carbonate polyols
US10836858B2 (en) 2016-06-22 2020-11-17 Covestro Deutschland Ag Method for producing polyether carbonate polyols
WO2018026571A1 (en) 2016-08-05 2018-02-08 Covestro Llc Systems and processes for producing polyether polyols
US10258953B2 (en) 2016-08-05 2019-04-16 Covestro Llc Systems and processes for producing polyether polyols
WO2018069348A1 (en) 2016-10-12 2018-04-19 Covestro Deutschland Ag Process for producing elastomers
WO2018069350A1 (en) 2016-10-12 2018-04-19 Covestro Deutschland Ag Method for producing a multiple bond-containing prepolymer as elastomer precursor
US11312812B2 (en) 2016-10-12 2022-04-26 Covestro Deutschland Ag Process for producing elastomers
WO2018114837A1 (en) 2016-12-19 2018-06-28 Covestro Deutschland Ag Method for producing polyether thiocarbonate polyols
EP3336130A1 (en) 2016-12-19 2018-06-20 Covestro Deutschland AG Method for manufacturing polyether thiocarbonate polyols
EP3424967A1 (en) 2017-07-07 2019-01-09 Covestro Deutschland AG Method for manufacturing functionalised polyoxyalkylene polyoles
WO2019007771A1 (en) 2017-07-07 2019-01-10 Covestro Deutschland Ag Process for the preparation of functionalized polyoxyalkylene polyols
KR101836133B1 (en) * 2017-08-04 2018-03-08 (주)아람엔지니어링 Piping connection device of fire fighting
EP3461852A1 (en) 2017-09-28 2019-04-03 Covestro Deutschland AG Method for producing a polymer containing multiple bonds as elastomer prestage
WO2019063582A1 (en) 2017-09-28 2019-04-04 Covestro Deutschland Ag Method for producing a polymer which contains multiple bonds as an elastomer precursor
EP3473658A1 (en) 2017-10-18 2019-04-24 Covestro Deutschland AG Diblock copolymers and their use as surfactants
WO2019076862A1 (en) 2017-10-18 2019-04-25 Covestro Deutschland Ag Diblock copolymeres and their use as surfactants
WO2019101702A1 (en) 2017-11-23 2019-05-31 Covestro Deutschland Ag High molecular weight polyoxyalkylene with low glass transition temperature, produced by the grafting through method
EP3489278A1 (en) 2017-11-23 2019-05-29 Covestro Deutschland AG High molecular weight polyoxyethylene with deep glass temperature made using the grafting through method
WO2019121205A1 (en) 2017-12-19 2019-06-27 Covestro Deutschland Ag Method for producing polyetherester polyols
EP3502162A1 (en) 2017-12-19 2019-06-26 Covestro Deutschland AG Method for manufacturing polyether ester polyols
WO2019158592A1 (en) 2018-02-16 2019-08-22 Covestro Deutschland Ag Process for preparing polyether carbonate polyols
EP3587469A1 (en) 2018-06-22 2020-01-01 Covestro Deutschland AG Method for the preparation of polyol
EP3597690A1 (en) 2018-07-19 2020-01-22 Covestro Deutschland AG Heterocycle-functional polyether or polyether carbonates and method for their manufacture
WO2020016201A1 (en) 2018-07-19 2020-01-23 Covestro Deutschland Ag Heterocyclic functional polyethers or polyethercarbonates and method for the production thereof
EP3604320A1 (en) 2018-08-01 2020-02-05 Covestro Deutschland AG Flame retardant phosphorous functional polyether carbonate polyols and method for their preparation
WO2020030538A1 (en) 2018-08-07 2020-02-13 Covestro Deutschland Ag Method for producing a polymer which contains double bonds as an elastomer precursor
US11091589B1 (en) 2018-08-07 2021-08-17 Covestro Intellectual Property Gmbh & Co. Kg Method for producing a polymer which contains double bonds as an elastomer precursor
EP3608348A1 (en) 2018-08-07 2020-02-12 Covestro Deutschland AG Method for producing an organooxysilyl-crosslinked polymer
WO2020030617A1 (en) 2018-08-08 2020-02-13 Covestro Deutschland Ag Method for producing double metal cyanide catalysts
US11813595B2 (en) 2018-08-08 2023-11-14 Covestro Intellectual Property Gmbh & Co. Kg Method for producing double metal cyanide catalysts
EP3608018A1 (en) 2018-08-08 2020-02-12 Covestro Deutschland AG Method for the production of double metal cyanide catalysts
EP3617248A1 (en) 2018-08-30 2020-03-04 Covestro Deutschland AG Method for the separation of gaseous components
WO2020043484A1 (en) 2018-08-30 2020-03-05 Covestro Deutschland Ag Process for separating gaseous constituents
EP3643730A1 (en) 2018-10-26 2020-04-29 Covestro Deutschland AG Method for the preparation of polyoxymethylene polyoxyalkylene block copolymers
WO2020083814A1 (en) 2018-10-26 2020-04-30 Covestro Deutschland Ag Method for producing polyoxymethylene polyoxyalkylene block copolymers
WO2020127015A1 (en) 2018-12-21 2020-06-25 Covestro Intellectual Property Gmbh & Co. Kg Process for producing a polyester
WO2020127016A1 (en) 2018-12-21 2020-06-25 Covestro Intellectual Property Gmbh & Co. Kg Method for producing a polyester-polyetherpolyol block copolymer
EP3670571A1 (en) 2018-12-21 2020-06-24 Covestro Deutschland AG Method for producing a polyester-polyetherpolyol block copolymer
EP3670557A1 (en) 2018-12-21 2020-06-24 Covestro Deutschland AG Method for producing a polyoxyalkylenpolyesterpolyol
EP3670568A1 (en) 2018-12-21 2020-06-24 Covestro Deutschland AG Method for producing a polyester
WO2020127582A1 (en) 2018-12-21 2020-06-25 Covestro Intellectual Property Gmbh & Co. Kg Method for producing a polyoxyalkylene polyester polyol
US12054581B2 (en) 2018-12-21 2024-08-06 Covestro Intellectual Property Gmbh & Co. Kg Method for producing a polyoxyalkylene polyester polyol
EP3683251A1 (en) 2019-01-15 2020-07-22 Covestro Deutschland AG Process for the preparation of diol
US12060454B2 (en) 2019-06-05 2024-08-13 Covestro Intellectual Property Gmbh & Co. Kg Process for the continuous production of polyoxyalkylene polyols
EP3747927A1 (en) 2019-06-05 2020-12-09 Covestro Deutschland AG Method for continuous production of polyoxyalkylenpolyols
WO2020245039A1 (en) 2019-06-05 2020-12-10 Covestro Intellectual Property Gmbh & Co. Kg Process for the continuous production of polyoxyalkylene polyols
EP3750940A1 (en) 2019-06-11 2020-12-16 Covestro Deutschland AG Method for manufacturing polyether carbonate polyols
WO2020249433A1 (en) 2019-06-11 2020-12-17 Covestro Deutschland Ag Method for preparing polyether carbonate polyols
WO2021004814A1 (en) 2019-07-05 2021-01-14 Covestro Intellectual Property Gmbh & Co. Kg Method for producing polyether ester carbonate polyols
EP3760663A1 (en) 2019-07-05 2021-01-06 Covestro Deutschland AG Method for manufacturing polyether ester carbonate polyols
EP3763768A1 (en) 2019-07-12 2021-01-13 Covestro Deutschland AG Polyether carbonate polyols having narrow segment length distribution
WO2021018753A1 (en) 2019-07-31 2021-02-04 Covestro Deutschland Ag Method for producing polyether carbonate polyols
EP3771724A1 (en) 2019-07-31 2021-02-03 Covestro Deutschland AG Process for producing polyether carbonate polyols
WO2021110589A1 (en) 2019-12-04 2021-06-10 Covestro Intellectual Property Gmbh & Co. Kg Process for producing polyether carbonate polyols
EP3831867A1 (en) 2019-12-04 2021-06-09 Covestro Deutschland AG Process for producing polyether carbonate polyols
WO2021110691A1 (en) 2019-12-04 2021-06-10 Covestro Intellectual Property Gmbh & Co. Kg Process for producing polyether carbonate polyols
WO2021122402A1 (en) 2019-12-18 2021-06-24 Covestro Intellectual Property Gmbh & Co. Kg Method for producing polyoxymethylene polyoxyalkylene copolymers
EP3838938A1 (en) 2019-12-18 2021-06-23 Covestro Deutschland AG Method for the preparation of polyoxymethylene polyoxyalkylene copolymers
EP3878885A1 (en) 2020-03-10 2021-09-15 Covestro Deutschland AG Process for producing polyether carbonate polyols
WO2021180567A1 (en) 2020-03-10 2021-09-16 Covestro Deutschland Ag Process for preparing polyether carbonate polyols
EP3882297A1 (en) 2020-03-17 2021-09-22 Covestro Deutschland AG Process for producing polyether carbonate polyols
WO2021185710A1 (en) 2020-03-17 2021-09-23 Covestro Deutschland Ag Process for producing polyether carbonate polyols
EP3885390A1 (en) 2020-03-25 2021-09-29 Covestro Deutschland AG Method for producing an ether estol
WO2021191069A1 (en) 2020-03-25 2021-09-30 Covestro Deutschland Ag Method for producing an ether esterol
WO2021198054A1 (en) 2020-04-02 2021-10-07 Covestro Deutschland Ag Process for preparing a polyoxyalkylene carbonate polyol
EP3889204A1 (en) 2020-04-02 2021-10-06 Covestro Deutschland AG Method for producing a polyoxyalkylene carbonate polyol
WO2021249814A1 (en) 2020-06-08 2021-12-16 Covestro Deutschland Ag Process for producing polyether carbonate polyols
WO2021249815A1 (en) 2020-06-08 2021-12-16 Covestro Deutschland Ag Process for producing polyether carbonate polyols
EP3922660A1 (en) 2020-06-08 2021-12-15 Covestro Deutschland AG Process for producing polyether carbonate polyols
EP3922659A1 (en) 2020-06-08 2021-12-15 Covestro Deutschland AG Process for producing polyether carbonate polyols
EP3922661A1 (en) 2020-06-12 2021-12-15 Covestro Deutschland AG Method for the preparation of polyoxymethylene polyoxyalkylene copolymers
WO2021249905A1 (en) 2020-06-12 2021-12-16 Covestro Deutschland Ag Process for producing polyoxymethylene-polyoxyalkylene copolymers
EP3988600A1 (en) 2020-10-20 2022-04-27 Covestro Deutschland AG Method for the preparation of polyether carbonate alcohols
WO2022084115A1 (en) 2020-10-20 2022-04-28 Covestro Deutschland Ag Process for preparing polyether carbonate alcohols
WO2022189318A1 (en) 2021-03-12 2022-09-15 Covestro Deutschland Ag Process for purifying cyclic carbonates
WO2022258570A1 (en) 2021-06-10 2022-12-15 Covestro Deutschland Ag Process for producing polyoxymethylene-polyoxyalkylene copolymers
EP4151669A1 (en) 2021-09-15 2023-03-22 Covestro Deutschland AG Process for producing polyether carbonate polyols
WO2023041364A1 (en) 2021-09-15 2023-03-23 Covestro Deutschland Ag Method for producing polyether carbonate polyols
EP4169963A1 (en) 2021-10-18 2023-04-26 Covestro LLC Processes and production plants for producing polymer polyols
US11952454B2 (en) 2021-10-18 2024-04-09 Covestro Llc Processes and production plants for producing polymer polyols
EP4177294A1 (en) 2021-11-05 2023-05-10 Covestro LLC Processes for producing polyols
EP4302874A1 (en) 2022-07-04 2024-01-10 Covestro Deutschland AG Method for the production of double metal cyanide catalysts
WO2024008546A2 (en) 2022-07-04 2024-01-11 Covestro Deutschland Ag Process for preparing double metal cyanide catalysts
EP4397691A1 (en) 2023-01-06 2024-07-10 Covestro Deutschland AG Method for producing polyoxyalkylene polyol

Also Published As

Publication number Publication date
JP2004169758A (en) 2004-06-17

Similar Documents

Publication Publication Date Title
JP4145123B2 (en) Fitting
JP3077817B2 (en) Joint for outer surface engagement of resin pipe
JP5311795B2 (en) Pipe fitting
WO2015029815A1 (en) Tube joint
US6843507B2 (en) Tube joint
KR100366129B1 (en) The pipe coupler
KR20070046145A (en) Metallic cutting ring
JP5322679B2 (en) Insert member and joint used for joint
JP5537982B2 (en) Pipe fitting
JP2006170379A (en) Joint
JP5472706B2 (en) Pipe fitting
JP2009257358A (en) Connecting hardware of water flow pipe
JP5515495B2 (en) Fitting
JP2007170658A (en) Pipe joint
JP2009287646A (en) Pipe joint
WO2011001376A1 (en) Pipe coupling
KR200473400Y1 (en) Apparatus for connecting a pipe and a connecting pipe
CN113412387A (en) Connection structure
JP6662099B2 (en) Pipe fittings
JP6613136B2 (en) Tube unit
JPH10141557A (en) Pipe connecting device
JP7491596B2 (en) Pipe Fittings
CN210566881U (en) Self-locking pipe connector
TWM544464U (en) Oil pipe connection structure
JP4982201B2 (en) Pipe fitting

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050825

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080604

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080610

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080617

R150 Certificate of patent or registration of utility model

Ref document number: 4145123

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110627

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140627

Year of fee payment: 6

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140627

Year of fee payment: 6

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees