JP2007239986A - Resin tube connection joint - Google Patents

Resin tube connection joint Download PDF

Info

Publication number
JP2007239986A
JP2007239986A JP2006106903A JP2006106903A JP2007239986A JP 2007239986 A JP2007239986 A JP 2007239986A JP 2006106903 A JP2006106903 A JP 2006106903A JP 2006106903 A JP2006106903 A JP 2006106903A JP 2007239986 A JP2007239986 A JP 2007239986A
Authority
JP
Japan
Prior art keywords
resin tube
fastening ring
peripheral surface
joint
resin
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.)
Granted
Application number
JP2006106903A
Other languages
Japanese (ja)
Other versions
JP4864514B2 (en
Inventor
Toshiaki Nishioka
利明 西岡
Mitsuaki Shimasaka
光明 島坂
Takashi Mori
孝 森
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.)
SanEi Faucet Manufacturing Co Ltd
Original Assignee
SanEi Faucet Manufacturing 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 SanEi Faucet Manufacturing Co Ltd filed Critical SanEi Faucet Manufacturing Co Ltd
Priority to JP2006106903A priority Critical patent/JP4864514B2/en
Publication of JP2007239986A publication Critical patent/JP2007239986A/en
Application granted granted Critical
Publication of JP4864514B2 publication Critical patent/JP4864514B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resin tube connection joint, capable of surely and easily performing a connection work in a strongly stopped state while practically reducing the cost by dispensing with use of a resin tube with a diameter larger than necessary. <P>SOLUTION: A connection cylindrical part 3 of a joint main body 12 to which a resin tube 2 is inserted includes an engagement tooth part 4 to be engaged with the inside surface 2a of the resin tube 2 to stop the resin tube 2, and a return arresting mechanism which arrests return of a fastening ring 5 fitted to the outside of the resin tube 2 to the loosening direction, when the fastening ring 5 is screwed to the joint main body 12 by a predetermined quantity, by elastically engagingly fitting a projection member 15 retained on the joint body 12 side into a recessed part 17 formed on the inside surface of the fastening ring 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、樹脂管接続継手に関する。詳しくは、継手本体の接続筒部に樹脂管を挿入し、この樹脂管の内周面を前記接続筒部側に設けられた鋸歯状の係合歯部に係合させることにより該樹脂管を抜止めするように構成されている樹脂管接続継手に関するものである。  The present invention relates to a resin pipe connection joint. Specifically, the resin tube is inserted into the connecting tube portion of the joint body, and the inner peripheral surface of the resin tube is engaged with a serrated engaging tooth portion provided on the connecting tube portion side. The present invention relates to a resin pipe connection joint that is configured to be retained.

この種の樹脂管接続継手として、従来一般には、図６に示すように、樹脂管４４が挿入される継手本体４５の接続筒部４２の外周面に、鋸歯状断面の係合歯部４３を形成し、この係合歯部４３を接続筒部４２に圧入された樹脂管４４の内周面に係合させることにより、樹脂管４４を抜止めし、かつ、水漏れも防止するように構成された樹脂管接続継手４１が汎用されていた（例えば、特許文献１参照）。  As a resin pipe connection joint of this type, conventionally, as shown in FIG. 6, an engagement tooth portion 43 having a sawtooth cross section is provided on the outer peripheral surface of the connection cylinder portion 42 of the joint body 45 into which the resin pipe 44 is inserted. The engaging tooth portion 43 is formed and engaged with the inner peripheral surface of the resin tube 44 press-fitted into the connecting tube portion 42, thereby preventing the resin tube 44 from being removed and preventing water leakage. The made resin pipe connection joint 41 has been widely used (see, for example, Patent Document 1).

特開２００３−２２２２８２号公報  JP 2003-222282 A

しかしながら、図６に示したような従来一般の樹脂管接続継手４１の場合は、接続筒部４２の強度を十分に確保しつつ、樹脂管４４内周面への係合歯部４３の係合力に依存する抜止め力を十分に確保するためには谷部と山部との径差が大きい鋸歯状断面の係合歯部４３が必要であり、また、その係合歯部４３を削り出し加工により形成する必要がある。そのため、接続状態において、配管を流れる許容流量を決定する要素となる接続筒部４２の内径Ｄ２に対して必要以上に内径Ｄ１の大きい樹脂管４４を余儀なく用いねばならず、実質許容流量からみてコスト面での不利（不経済さ）は避けられないという問題があった。  However, in the case of the conventional general resin pipe connection joint 41 as shown in FIG. 6, the engagement force of the engagement tooth portion 43 to the inner peripheral surface of the resin pipe 44 while ensuring the strength of the connection cylinder portion 42 sufficiently. In order to sufficiently secure the retaining force depending on the diameter, the engagement tooth portion 43 having a sawtooth cross section with a large diameter difference between the valley portion and the mountain portion is necessary, and the engagement tooth portion 43 is cut out. It must be formed by processing. Therefore, in the connected state, it is necessary to use a resin pipe 44 having an inner diameter D1 larger than necessary with respect to the inner diameter D2 of the connecting cylinder portion 42 which is an element for determining the allowable flow rate flowing through the pipe. There was a problem that disadvantages (uneconomical) in terms of the surface was inevitable.

本発明は上記のような実情に鑑みてなされたもので、その目的は、必要以上に径の大きい樹脂管の使用を不要にして実用面でのコストダウンを図ることができるものでありながら、強力な抜止め作用を発揮させることができ、しかも、そのような強力抜止め状態での接続作業を確実容易に行うことができる樹脂管接続継手を提供することにある。  The present invention has been made in view of the above circumstances, and its purpose is to eliminate the use of a resin pipe having a diameter larger than necessary and to reduce the cost in practical use. An object of the present invention is to provide a resin pipe connection joint that can exert a strong retaining action and that can easily and reliably perform connection work in such a strong retaining state.

上記目的を達成するために、本発明に係る樹脂管接続継手は、樹脂管が挿入される継手本体の接続筒部に、樹脂管の内周面に係合してその樹脂管を抜止めする係合歯部が設けられているとともに、前記接続筒部に挿入された樹脂管の外側に嵌合されてその樹脂管の内周面を前記係合歯部側に押圧する締め輪が、前記継手本体にねじ部を介して締付け固定可能に構成されている樹脂管接続継手であって、前記継手本体と前記締め輪との間に、両者のねじ部が所定量ねじ込まれたとき、継手本体側に径方向外方へ向けて弾性移動付勢状態に保持されている突起部材が締め輪の内周面に形成されている凹部に弾性的に係入して該締め輪のねじ緩み方向への戻りを阻止する戻り阻止機構が設けられていることを特徴としている。  In order to achieve the above object, the resin pipe connection joint according to the present invention is engaged with the inner peripheral surface of the resin pipe in the connection cylinder portion of the joint body into which the resin pipe is inserted to prevent the resin pipe from being pulled out. An engagement tooth portion is provided, and a fastening ring that is fitted to the outside of the resin tube inserted into the connection tube portion and presses the inner peripheral surface of the resin tube toward the engagement tooth portion side A resin pipe connection joint that is configured to be fastened and fixed to a joint body via a threaded portion, and when both of the threaded parts are screwed in between the joint body and the fastening ring, the joint body The projecting member, which is held in an elastically urged state toward the outer side in the radial direction, is elastically engaged with a recess formed in the inner peripheral surface of the fastening ring, and in the direction of loosening the screw of the fastening ring. It is characterized in that a return prevention mechanism is provided for preventing the return.

上記構成の樹脂管接続継手において、請求項２に記載のように、前記係合歯部を、前記継手本体の接続筒部の外周面に形成した環状凹部に嵌合保持させる構成とすることが望ましい。  In the resin pipe connection joint having the above-described configuration, as described in claim 2, the engagement tooth portion is configured to be fitted and held in an annular recess formed on an outer peripheral surface of the connection tube portion of the joint body. desirable.

また、上記構成の樹脂管接続継手において、請求項３に記載のように、前記締め輪に、該締め輪内周面の凹部に弾性的に係入した突起部材を締め輪外側からの操作により前記凹部から係入離脱させるための工具差し入れ用の孔を形成することが好ましい。  Further, in the resin pipe connection joint having the above-described configuration, as described in claim 3, a protruding member elastically engaged with the concave portion of the inner peripheral surface of the fastening ring is operated on the fastening ring from the outside of the fastening ring. It is preferable to form a tool insertion hole for engaging and disengaging from the recess.

上記のような特徴構成を有する本発明によれば、樹脂管の外側に嵌合させた締め輪によって、該樹脂管の内周面を係合歯部に押圧することにより、谷部と山部との径差が小さい係合歯部を用いたとしても、その係合力に依存する抜止め力を十分に大きく確保することが可能であり、その分だけ強度低下を招かずに接続筒部の肉厚を小さくして内径の割に外径を小さくすることができる。これによって、接続筒部の内径に対して必要以上に内径の大きい樹脂管を用いる必要がなくなり、従来一般の樹脂管接続継手に比べて実用面でのコストダウンを図ることができる。  According to the present invention having the above-described characteristic configuration, by pressing the inner peripheral surface of the resin tube against the engagement tooth portion by the fastening ring fitted to the outside of the resin tube, the valley portion and the mountain portion Even if an engagement tooth portion with a small diameter difference is used, it is possible to secure a sufficiently large retaining force depending on the engagement force, and the connection cylinder portion is not reduced by that much. The wall thickness can be reduced to reduce the outer diameter relative to the inner diameter. As a result, it is not necessary to use a resin pipe having an inner diameter larger than necessary with respect to the inner diameter of the connecting tube portion, and a practical cost can be reduced as compared with a conventional general resin pipe connecting joint.

しかも、樹脂管の外側に嵌合させた締め輪を継手本体にねじ部を介して締付け固定することにより、樹脂管が温度変化等によって拡径変形力を受けたとしても、その内周面への前記係合歯部の係合状態を確保して強力な抜止め作用を発揮させることができる。  Moreover, even if the resin tube receives a diameter expansion deformation force due to a temperature change or the like, the fastening ring fitted to the outside of the resin tube is fastened and fixed to the joint body via the threaded portion. The engagement state of the engagement tooth portion can be secured and a strong retaining action can be exhibited.

その上、初期の接続作業時において、継手本体と締め輪のねじ部が所定量ねじ込まれたとき、戻り阻止機構を構成する継手本体側の突起部材が締め輪の内周面側の凹部に弾性的に係入して該締め輪のねじ緩み方向への戻りを阻止できるとともに、その突起部材が凹部に弾性係入する時に発生する音（クリック音）により締付け接続を確認することができる。したがって、接続時の締付けのばらつきをなくすることができるのはもとより、熟練を要することなく、強力な抜止め状態での締付け接続を確実かつ容易に完遂でき、接続作業性及び抜止め性能の信頼性向上を達成することができるという効果を奏する。  In addition, during the initial connection operation, when the threaded portion of the joint body and the fastening ring is screwed in a predetermined amount, the joint body-side protruding member that constitutes the return prevention mechanism is elasticated in the recess on the inner peripheral surface side of the fastening ring. Thus, the fastening ring can be prevented from returning in the direction of loosening the screw, and the tightening connection can be confirmed by a sound (click sound) generated when the protruding member is elastically engaged with the recess. Therefore, it is possible not only to eliminate variations in tightening during connection, but also to reliably and easily complete a tightening connection in a strong retaining state without requiring skill, and to ensure reliable connection workability and retaining performance. There is an effect that it is possible to achieve an improvement in performance.

特に、係合歯部を接続筒部の外周面に形成した環状凹部に嵌合保持させる構成を採用した場合は、環状凹部の内径を樹脂管の外径に近似させることができ、その分接続筒部の内径を小さくする必要がなくなり、より細径樹脂管の使用を可能にして一層のコストダウンを図ることができる。  In particular, when adopting a configuration in which the engagement tooth portion is fitted and held in an annular recess formed on the outer peripheral surface of the connection cylinder portion, the inner diameter of the annular recess can be approximated to the outer diameter of the resin tube, and the connection is made accordingly. It is no longer necessary to reduce the inner diameter of the cylindrical portion, and it is possible to use a thinner resin tube, thereby further reducing the cost.

また、締め輪に、該締め輪内周面の凹部に弾性的に係入した突起部材を締め輪外側からの操作により前記凹部から係入離脱させるための工具差し入れ用の孔を形成する場合は、突起部材の凹部への係入付勢力を強めたり、係入深さを大きくしたりして戻り阻止機構を非可逆的な構成とし、抜止め性能の信頼性を一段と高めつつも、例えば樹脂管の交換等で接続解除が必要になったときは、前記孔から工具を差し入れることにより、突起部材を凹部から係入離脱させて所定の接続を解除することができる。  Further, when forming a tool insertion hole in the fastening ring for engaging and releasing the protruding member elastically engaged with the concave portion of the inner peripheral surface of the fastening ring from the concave portion by an operation from the outside of the fastening ring. The return blocking mechanism has an irreversible configuration by increasing the engagement biasing force to the recess of the protruding member or increasing the engagement depth, and while further improving the reliability of the retaining performance, for example, resin When it is necessary to release the connection due to tube replacement or the like, by inserting a tool from the hole, the projecting member can be engaged and disengaged from the recess to release the predetermined connection.

以下、本発明の実施の形態について説明する。
図１は、例えば宅内の給湯管や給水管として用いられる樹脂管と、湯水混合栓の湯水導入部の上流側に設けた止水栓とを接続するために使用される樹脂管接続継手１の接続状態を示す半截縦断面図であり、この樹脂管接続継手１は、樹脂管２が挿入される接続筒部３を有する継手本体１２と、樹脂管２の内周面２ａに係合してその樹脂管２を抜止めするように前記接続筒部３に設けられた係合歯部４と、樹脂管２の内周面２ａを前記係合歯部４側に押圧するように樹脂管２の外側に嵌合され前記継手本体１２に雌雄のねじ部Ａ，Ｂを介して締付け固定可能な締め輪５とからなる。Embodiments of the present invention will be described below.
FIG. 1 shows a resin pipe connection joint 1 used for connecting, for example, a resin pipe used as a hot water supply pipe or a water supply pipe in a house and a stop cock provided on the upstream side of a hot water introduction part of a hot water mixing plug. FIG. 2 is a half-longitudinal longitudinal sectional view showing a connection state. The resin pipe connection joint 1 is engaged with a joint body 12 having a connection cylinder portion 3 into which the resin pipe 2 is inserted and an inner peripheral surface 2a of the resin pipe 2; The resin tube 2 so as to press the engagement tooth portion 4 provided in the connecting tube portion 3 so as to prevent the resin tube 2 from being pulled out and the inner peripheral surface 2a of the resin tube 2 toward the engagement tooth portion 4 side. And a tightening ring 5 that can be fixed to the joint body 12 via male and female threaded portions A and B.

前記係合歯部４は、図５（Ａ）及び（Ｂ）で明示するように、外周面の軸方向複数箇所に鋸歯状断面形状を呈する環状の係合歯７を有し、かつ、周方向の一箇所を切欠いて拡縮変形可能な半割りリング状をなして前記継手本体１２とは別体に加工され、前記接続筒部３の外周面３ａに形成した広幅の環状凹部６に嵌合保持されている。そして、この係合歯部４は拡径変形した状態で環状凹部６に嵌合させると、係合歯部４がそれ自体の弾性により初期状態に縮径復元して係合歯７が接続筒部３の外周面３ａより径外側に突出した状態となる。  As clearly shown in FIGS. 5A and 5B, the engaging tooth portion 4 has annular engaging teeth 7 having a sawtooth cross-sectional shape at a plurality of axial positions on the outer peripheral surface, A halved ring shape that can be expanded and contracted by cutting out at one location in the direction is processed separately from the joint body 12 and fitted into a wide annular recess 6 formed on the outer peripheral surface 3a of the connection tube portion 3 Is retained. Then, when the engaging tooth portion 4 is fitted into the annular recess 6 in a state where the diameter of the engaging tooth 4 is deformed, the engaging tooth portion 4 is restored to its initial diameter by its own elasticity, and the engaging tooth 7 is connected to the connecting cylinder. It will be in the state which protruded to the diameter outer side from the outer peripheral surface 3a of the part 3. FIG.

前記継手本体１２は、大径のナット状鍔部９を境にして前記接続筒部３と反対側に、例えば湯水混合栓の湯水導入部の上流側に設けた止水栓などに締付け接続可能な雄ねじ部分８を有するとともに、前記ナット状鍔部９と接続筒部３との間には前記雄ねじＡが形成され、かつ、前記樹脂管２の挿入限界ストッパーとなる段差１１が形成された大径厚肉部分１０を有する。また、接続筒部３の外周面には、前記広幅の環状凹部６と複数の幅狭環状溝部１３が形成されており、幅狭の環状溝部１３内には弾力性を有するＯリングなどのシールリング１４が嵌め込み保持されている。そして、前記接続筒部３に樹脂管２を差し込み挿入すると、係合歯部４の係合歯７が樹脂管２の内周面２ａに食い込んで（係合して）樹脂管２を抜け止めするとともに、複数のシールリング１４が樹脂管２の内周面２ａに密着して水密にシールする。  The joint body 12 can be tightened and connected to a stop cock provided on the opposite side of the connecting cylinder portion 3 with the large-diameter nut-like flange 9 as a boundary, for example, on the upstream side of the hot water introduction portion of the hot water mixing tap. A large male screw portion 8 is formed, the male screw A is formed between the nut-shaped flange 9 and the connecting tube portion 3, and a step 11 serving as an insertion limit stopper for the resin tube 2 is formed. It has a diameter-thick part 10. Further, the wide annular recess 6 and a plurality of narrow annular grooves 13 are formed on the outer peripheral surface of the connecting cylinder portion 3, and a seal such as an elastic O-ring is provided in the narrow annular groove 13. The ring 14 is fitted and held. When the resin tube 2 is inserted and inserted into the connecting tube portion 3, the engagement teeth 7 of the engagement tooth portion 4 bite into (engage with) the inner peripheral surface 2a of the resin tube 2 to prevent the resin tube 2 from coming off. At the same time, the plurality of seal rings 14 are brought into close contact with the inner peripheral surface 2a of the resin tube 2 and sealed in a watertight manner.

また、前記継手本体１２における大径厚肉部分１０には、図２にも明示するように、その外周面に開口する状態で径方向に比較的深い凹入部１９が形成されており、この凹入部１９内には、突起部材１５とこれを径方向外方へ向けて弾性移動付勢するコイルバネ等の弾性部材１６と前記突起部材１５の径方向外方への移動を制限するリングストッパー２０が収容保持されている。前記突起部材１５は、薄肉略半円盤状の突出部１５ａとこの略半円盤状突出部１５ａのみを大径厚肉部分１０の外方へ突出させるように前記リングストッパー２０に弾接する断面ほぼ円弧状のストッパー片部１５ｂとを有している。  In addition, the large-diameter thick-walled portion 10 of the joint body 12 is formed with a relatively deep recessed portion 19 in the radial direction so as to open to the outer peripheral surface, as clearly shown in FIG. In the insertion portion 19, there are a protruding member 15, an elastic member 16 such as a coil spring that elastically biases the protruding member 15 outward in the radial direction, and a ring stopper 20 that restricts the outward movement of the protruding member 15 in the radial direction. Contained and held. The projecting member 15 has a thin substantially semi-disc-shaped protrusion 15a and a substantially circular cross section that elastically contacts the ring stopper 20 so that only the substantially semi-disc-shaped protrusion 15a protrudes outward from the large-diameter thick-walled portion 10. And an arcuate stopper piece 15b.

一方、前記締め輪５は、図３及び図５にも明示するように、その軸心方向一端の内周面部に継手本体１２側の雄ねじＢに螺合する雌ねじＡが形成されているとともに、この雌ねじＡに隣接する内周面部分に前記突起部材１５を弾性部材１６の付勢力に抗して径方向内方へ押し戻すカム面５ａが形成され、かつ、このカム面５ａに続く内周面部分に前記突起部材１５の突出部分１５ａが弾性的に係入する深さの浅い凹部１７が形成されている。この凹部１７は、円弧状底面１７ａと円弧状開口１７ｂを有する平面視矩形状をなしており、この凹部１７と前記突起部材１５とにより、締め輪５のねじ緩み方向への戻りを阻止する戻り阻止機構が構成されている。  On the other hand, as shown clearly in FIGS. 3 and 5, the fastening ring 5 is formed with a female screw A that is screwed into a male screw B on the joint body 12 side on the inner peripheral surface portion at one end in the axial direction. A cam surface 5a is formed on the inner peripheral surface portion adjacent to the female screw A to push the protruding member 15 radially inward against the biasing force of the elastic member 16, and the inner peripheral surface following the cam surface 5a. A shallow concave portion 17 into which the protruding portion 15a of the protruding member 15 is elastically engaged is formed in the portion. The recess 17 has a rectangular shape in plan view having an arc-shaped bottom surface 17a and an arc-shaped opening 17b, and the recess 17 and the protruding member 15 prevent the return of the fastening ring 5 in the screw loosening direction. A blocking mechanism is configured.

また、凹部１７の円弧状底面１７ａの中央から締め輪５の外周面に至るまでの締め輪壁部分には、前記凹部１７に弾性的に係入した前記突起部材１５を締め輪５の外側からの操作によって該凹部１７から弾性に抗して係入離脱させるための工具差し入れ用のスリット孔１８が形成されている。このスリット孔１８の周方向に沿う長さは凹部１７の周幅よりも若干短く設定されている。  Further, the projecting member 15 elastically engaged with the recess 17 is provided from the outside of the clamp ring 5 to the clamp ring wall portion from the center of the arcuate bottom surface 17 a of the recess 17 to the outer peripheral surface of the clamp ring 5. A slit hole 18 for inserting a tool for engaging and disengaging from the recess 17 against elasticity is formed by the above operation. The length along the circumferential direction of the slit hole 18 is set slightly shorter than the circumferential width of the recess 17.

上記のように構成された樹脂管接続継手１においては、係合歯部４を接続筒部３外周面３ａの環状凹部６に嵌合保持させているので、環状凹部６の内径を樹脂管２の外径に近似させることができ、その分接続筒部３の内径を小さくする必要はなくなり、樹脂管２の内径に見合う流体流量を確保できる。これによって、図６に示す従来一般の樹脂管接続継手に比べ必要以上に内径の大きな樹脂管４４を用いる必要がなくなり、細い樹脂管２を用いて流量を多くすることができる。  In the resin pipe connection joint 1 configured as described above, the engagement tooth portion 4 is fitted and held in the annular recess 6 of the outer peripheral surface 3a of the connection cylinder portion 3, so that the inner diameter of the annular recess 6 is set to the resin tube 2. Therefore, it is not necessary to reduce the inner diameter of the connecting tube portion 3 and the fluid flow rate corresponding to the inner diameter of the resin tube 2 can be secured. Accordingly, it is not necessary to use a resin pipe 44 having an inner diameter larger than necessary as compared with the conventional general resin pipe connection joint shown in FIG. 6, and the flow rate can be increased using the thin resin pipe 2.

また、継手本体１２の接続筒部３に樹脂管２を差込み挿入した後、この樹脂管２の外側に嵌合させた締め輪５を雌雄ねじ部Ａ，Ｂのねじ込みを介して継手本体１２に締付け固定することにより所定の管接続を行うが、この締付け接続作業時で雌雄ねじ部Ａ，Ｂのねじ込み量に少し余裕がある締付け完了直前の状態では、図２（Ａ）に示すように、戻り阻止機構の一方の構成要素である突起部材１５がカム面５ａにより弾性部材１６の付勢力に抗して径方向内方側へ押し戻されており、所定量ねじ込まれた時点では、図２（Ｂ）に示すように、前記突起部材１５が弾性部材１６の付勢力により径方向外方に移動して該突起部材１５の突出部分１５ａが締め輪５内周面の凹部１７に弾性的に係入し、これによって、締め輪５のねじ緩み方向への戻りが阻止されるとともに、突起部材１５が凹部１７に弾性係入する時に発生するカチッという音（クリック音）により所定どおりの締付け接続が完了したことを確認できる。したがって、接続時の締付けのばらつきをなくすることができるのはもとより、熟練を要することなく、強力な抜止め状態での締付け接続を確実かつ容易に完遂することが可能で、接続作業性及び抜止め性能の信頼性向上を達成することができる。  Further, after inserting and inserting the resin tube 2 into the connecting tube portion 3 of the joint body 12, the fastening ring 5 fitted to the outside of the resin tube 2 is inserted into the joint body 12 via the screwing of the male and female screw portions A and B. As shown in FIG. 2 (A), a predetermined pipe connection is performed by tightening and fixing. In the state immediately before the completion of tightening, which has a slight margin in the screwing amount of the male and female screw parts A and B at the time of the tightening connection work, The projection member 15 which is one component of the return prevention mechanism is pushed back inward in the radial direction against the urging force of the elastic member 16 by the cam surface 5a, and when it is screwed in a predetermined amount, FIG. B), the protruding member 15 is moved radially outward by the biasing force of the elastic member 16, and the protruding portion 15a of the protruding member 15 is elastically engaged with the concave portion 17 on the inner peripheral surface of the fastening ring 5. And thereby return the fastening ring 5 in the direction of loosening the screw. There together is prevented, the projection member 15 can be confirmed that the predetermined exactly clamping connection is completed by audible click that occurs (click sound) when the resilient enter the recess 17. Therefore, it is possible not only to eliminate variations in tightening at the time of connection, but also to securely and easily complete a tightening connection in a strong retaining state without requiring skill. An improvement in the reliability of the stopping performance can be achieved.

そして、締付け接続が完了した状態では、樹脂管２の外側に嵌合させた締め輪５によって該樹脂管２の内周面２ａが係合歯部４に押圧保持されることになるため、谷部と山部との径差が小さい係合歯部４を用いたとしても、その係合力に依存する抜止め力を十分に大きく確保して信頼性の高い抜止め性能を発揮し維持させることが可能である。  When the tightening connection is completed, the inner peripheral surface 2a of the resin tube 2 is pressed and held by the engagement tooth portion 4 by the fastening ring 5 fitted to the outside of the resin tube 2. Even if the engagement tooth portion 4 having a small diameter difference between the head portion and the ridge portion is used, a sufficiently large retaining force depending on the engagement force is ensured and a highly reliable retaining performance is exhibited and maintained. Is possible.

また、上記のような締付け接続状態での使用時において、例えば樹脂管２の交換等のために接続解除が必要になったときは、前記スリット孔１８からドライバーなど工具を差し入れて突起部材１５の突出部分１５ａを凹部１７から係入離脱させ、この状態で締め輪５をねじ部Ａ，Ｂを介して継手本体１２から緩めるように操作することによって、所定の締付け接続を解除することができる。  Further, when it is necessary to release the connection due to, for example, replacement of the resin tube 2 during use in the above-described tightened connection state, a tool such as a screwdriver is inserted through the slit hole 18 to A predetermined tightening connection can be released by operating the projecting portion 15a to be engaged and disengaged from the concave portion 17 and to loosen the fastening ring 5 from the joint body 12 via the screw portions A and B in this state.

なお、突起部材１５の形状としては、上記実施の形態で説明したもの以外、例えばピン状のものであっても、ボール状のものであってもよく、凹部１７はその突起部材１５の形状に合わせた形状にすればよい。  The protrusion member 15 may have a shape other than the one described in the above embodiment, for example, a pin shape or a ball shape, and the concave portion 17 has the shape of the protrusion member 15. What is necessary is just to make it the shape combined.

本発明に係る樹脂管接続継手の実施の形態を示す半截縦断面図である。  It is a semi-longitudinal longitudinal sectional view showing an embodiment of a resin pipe connection joint according to the present invention. （Ａ）本発明に係る樹脂管接続継手における締め輪の締付け完了直前の状態を示す要部拡大断面図、（Ｂ）その締め輪の締付け完了状態を示す要部拡大断面図である。  (A) It is a principal part expanded sectional view which shows the state immediately before completion of fastening of the fastening ring in the resin pipe connection joint which concerns on this invention, (B) It is a principal part expanded sectional view which shows the fastening completion state of the fastening ring. 本発明に係る樹脂管接続継手における戻り阻止機構を説明するための外観斜視図である。  It is an external appearance perspective view for demonstrating the return prevention mechanism in the resin pipe connection joint which concerns on this invention. 図３におけるＸ−Ｘ線断面図である。  It is the XX sectional view taken on the line in FIG. （Ａ）本発明に係る樹脂管接続継手における係合歯部の半截縦断面図、（Ｂ）その係合歯部の正面図である。  (A) The half hook longitudinal cross-sectional view of the engagement tooth part in the resin pipe connection joint which concerns on this invention, (B) The front view of the engagement tooth part. 従来一般の樹脂管接続継手の縦断面図である。  It is a longitudinal cross-sectional view of the conventional general resin pipe connection joint.

符号の説明Explanation of symbols

１ 樹脂管接続継手
２ 樹脂管
２ａ 内周面
３ 接続筒部
４ 係合歯部
５ 締め輪
６ 環状凹部
１２ 継手本体
１５ 突起部材
１７ 凹部
１８ スリット孔
Ａ，Ｂ 雌雄ねじ部DESCRIPTION OF SYMBOLS 1 Resin pipe connection joint 2 Resin pipe 2a Inner peripheral surface 3 Connection cylinder part 4 Engagement tooth part 5 Fastening ring 6 Annular recessed part 12 Joint main body 15 Protrusion member 17 Recessed part 18 Slit hole A, B Female and male screw part

Claims (3)

樹脂管が挿入される継手本体の接続筒部に、樹脂管の内周面に係合してその樹脂管を抜止めする係合歯部が設けられているとともに、前記接続筒部に挿入された樹脂管の外側に嵌合されてその樹脂管の内周面を前記係合歯部側に押圧する締め輪が、前記継手本体にねじ部を介して締付け固定可能に構成されている樹脂管接続継手であって、
前記継手本体と前記締め輪との間に、両者のねじ部が所定量ねじ込まれたとき、継手本体側に径方向外方へ向けて弾性移動付勢状態に保持されている突起部材が締め輪の内周面に形成されている凹部に弾性的に係入して該締め輪のねじ緩み方向への戻りを阻止する戻り阻止機構が設けられていることを特徴とする樹脂管接続継手。The connecting tube portion of the joint body into which the resin tube is inserted is provided with an engaging tooth portion that engages with the inner peripheral surface of the resin tube and prevents the resin tube from being inserted, and is inserted into the connecting tube portion. A resin tube that is fitted to the outside of the resin tube and presses the inner peripheral surface of the resin tube toward the engaging tooth portion is configured to be fastened and fixed to the joint body via a screw portion. A connecting joint,
When a predetermined amount of both screw portions are screwed between the joint body and the fastening ring, a protruding member that is held in a state of elastic movement toward the radially outward direction on the joint body side is a fastening ring. A resin pipe connection joint, characterized in that a return prevention mechanism is provided that elastically engages in a recess formed on the inner peripheral surface of the inner ring to prevent the fastening ring from returning in the screw loosening direction. 前記係合歯部が、前記継手本体の接続筒部の外周面に形成した環状凹部に嵌合保持されている請求項１に記載の樹脂管接続継手。  The resin pipe connection joint according to claim 1, wherein the engagement tooth portion is fitted and held in an annular recess formed on an outer peripheral surface of a connection tube portion of the joint body. 前記締め輪には、該締め輪内周面の凹部に弾性的に係入した突起部材を締め輪外側からの操作により前記凹部から係入離脱させるための工具差し入れ用の孔が形成されている請求項１または２に記載の樹脂管接続継手。  The fastening ring is formed with a tool insertion hole for engaging and disengaging the protruding member elastically engaged with the concave portion of the inner peripheral surface of the fastening ring from the concave portion by an operation from the outside of the fastening ring. The resin pipe connection joint according to claim 1 or 2.
JP2006106903A 2006-03-10 2006-03-10 Resin pipe joint Expired - Fee Related JP4864514B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006106903A JP4864514B2 (en) 2006-03-10 2006-03-10 Resin pipe joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006106903A JP4864514B2 (en) 2006-03-10 2006-03-10 Resin pipe joint

Publications (2)

Publication Number Publication Date
JP2007239986A true JP2007239986A (en) 2007-09-20
JP4864514B2 JP4864514B2 (en) 2012-02-01

Family

ID=38585713

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006106903A Expired - Fee Related JP4864514B2 (en) 2006-03-10 2006-03-10 Resin pipe joint

Country Status (1)

Country Link
JP (1) JP4864514B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010127427A (en) * 2008-11-28 2010-06-10 Nippon Pillar Packing Co Ltd Resin pipe joint

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111643837B (en) * 2020-05-09 2021-09-14 哈尔滨松江拖拉机有限公司 Fire engine with water pipe convenient to disassemble and assemble

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5228113A (en) * 1975-08-29 1977-03-02 Nippon Concrete Ind Co Ltd Casing for excavating pile driving hole
JPS5274977A (en) * 1975-12-18 1977-06-23 Nippon Steel Corp Method of cutting plastic material in equal division for continuous pl astic material machine tool and control device for cutting same
JPH04331894A (en) * 1991-05-08 1992-11-19 Toyoda Gosei Co Ltd Connection structure for hose
JPH0650480A (en) * 1992-07-30 1994-02-22 Hitachi Metals Ltd Pipe fitting incorporating function of confirming insertion of pipe
JPH10196873A (en) * 1997-01-08 1998-07-31 Mitsubishi Kagaku Sanshi Corp Connecting member for plastic pipe
JP2002156084A (en) * 2000-11-21 2002-05-31 Mirai Ind Co Ltd Connection device for pipe body made of synthetic resin
JP2003222285A (en) * 2002-01-30 2003-08-08 Denso Corp Hose coupling structure
JP2004293702A (en) * 2003-03-27 2004-10-21 Fujii Gokin Seisakusho Co Ltd Flexible tube joint

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5228113A (en) * 1975-08-29 1977-03-02 Nippon Concrete Ind Co Ltd Casing for excavating pile driving hole
JPS5274977A (en) * 1975-12-18 1977-06-23 Nippon Steel Corp Method of cutting plastic material in equal division for continuous pl astic material machine tool and control device for cutting same
JPH04331894A (en) * 1991-05-08 1992-11-19 Toyoda Gosei Co Ltd Connection structure for hose
JPH0650480A (en) * 1992-07-30 1994-02-22 Hitachi Metals Ltd Pipe fitting incorporating function of confirming insertion of pipe
JPH10196873A (en) * 1997-01-08 1998-07-31 Mitsubishi Kagaku Sanshi Corp Connecting member for plastic pipe
JP2002156084A (en) * 2000-11-21 2002-05-31 Mirai Ind Co Ltd Connection device for pipe body made of synthetic resin
JP2003222285A (en) * 2002-01-30 2003-08-08 Denso Corp Hose coupling structure
JP2004293702A (en) * 2003-03-27 2004-10-21 Fujii Gokin Seisakusho Co Ltd Flexible tube joint

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010127427A (en) * 2008-11-28 2010-06-10 Nippon Pillar Packing Co Ltd Resin pipe joint

Also Published As

Publication number Publication date
JP4864514B2 (en) 2012-02-01

Similar Documents

Publication Publication Date Title
JP5311795B2 (en) Pipe fitting
JP2004176760A (en) Pipe joint
WO2010013339A1 (en) Single action joint for piping
JP2007198523A (en) Pipe joint
JP2001124258A (en) Pipe joint
JP4864514B2 (en) Resin pipe joint
JP4145183B2 (en) Pipe fitting
JP2006105269A (en) Pipe joint
JP2005076676A (en) Connecting structure of connector and gas valve provided therewith
JP2008106920A (en) Pipe joint
JP2006242348A (en) Pipe joint
JP4644113B2 (en) Pipe fitting
JP2009144740A (en) Joint having adapter
JP2007232121A (en) Pipe joint
JP6343131B2 (en) Fitting
JP2005090531A (en) Pipe joint
JP4227081B2 (en) Pipe fitting
JP3919763B2 (en) Pipe connection device
JP2002098276A (en) Pipe joint
JP2009287646A (en) Pipe joint
JP2003287181A (en) Pipe fitting
JP2013221586A (en) Pipe joint
JP2019503460A (en) Fittings for plug-in connection of conduits, especially plastic conduits
WO2011001376A1 (en) Pipe coupling
JP2000329270A (en) Connector for gas cock

Legal Events

Date Code Title Description
RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20081112

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20081119

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110112

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110208

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110318

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110628

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110803

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: 20111108

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: 20111109

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

Free format text: PAYMENT UNTIL: 20141118

Year of fee payment: 3

R150 Certificate of patent (=grant) or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees