JP2006161891A - Metal pipe joint structure and resin sleeve to be used for the same - Google Patents

Metal pipe joint structure and resin sleeve to be used for the same Download PDF

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Publication number
JP2006161891A
JP2006161891A JP2004351601A JP2004351601A JP2006161891A JP 2006161891 A JP2006161891 A JP 2006161891A JP 2004351601 A JP2004351601 A JP 2004351601A JP 2004351601 A JP2004351601 A JP 2004351601A JP 2006161891 A JP2006161891 A JP 2006161891A
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Japan
Prior art keywords
metal pipe
joint
ring
resin sleeve
metal tube
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Pending
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JP2004351601A
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Japanese (ja)
Inventor
Akinori Sakurada
秋能 桜田
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Bridgestone Corp
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Bridgestone Corp
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Publication date
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP2004351601A priority Critical patent/JP2006161891A/en
Publication of JP2006161891A publication Critical patent/JP2006161891A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/091—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint structure between a metal pipe and a joint, joining technology with no damage to an O-ring in the joint and a resin sleeve to be used for the same, wherein completely no damage is given to the O-ring even when cutting burrs are left at the front end of the metal pipe. <P>SOLUTION: In the joint structure, the metal pipe is inserted into the joint storing the O-ring and the joint is connected to the inner or outer peripheral face of the metal pipe via the water-proofing O-ring. The resin sleeve having a cover portion for covering the front end face of the metal pipe is inserted through the front end of the metal pipe. The sleeve is selected out of PPS, PE, PP and PVC resins, and a cylinder portion to be inserted into the metal pipe has a slit formed in the longitudinal direction of the metal pipe and it is inserted into the inner face of the metal pipe with resilient force. Refers to 20: the resin sleeve, 21: the cover portion, 22: the cylinder portion, 23: the slit, 24: a protrusion. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は金属管の接合構造に関するものであり、継手内のＯ−リングを傷付けることなく接合する技術に係るものである。   The present invention relates to a joining structure of metal pipes, and relates to a technique for joining without damaging an O-ring in a joint.

銅管等の金属管は切断時に切断端部にバリが発生する。そして、必要であれば金属管の外面と内面を夫々リーマーと呼ばれる面取り治具を使用してバリの除去を行っていた。   When a metal tube such as a copper tube is cut, burrs are generated at the cut end. If necessary, the outer surface and the inner surface of the metal tube are removed using a chamfering jig called a reamer.

しかるに、プッシュロック等のワンタッチ式継手に銅管等の金属管を差し込む際、金属管の先端が０−リングを通過する際に、前記した切断端部のバリによって０−リングを破損させてしまい、漏水事故や銅管自体の腐食事故につながっていた。かかるバリは前記したリ−マ−面取り治具によって加工するが、かかる面取り加工の不備は避けられないところであり、仮に十分な面取り加工を行っていたとしても、金属管の先端部とゴム様の０−リングとの接触であるため、０−リングの破損は免れられない。   However, when a metal tube such as a copper tube is inserted into a one-touch joint such as a push lock, the 0-ring is damaged by the burr at the cut end as described above when the tip of the metal tube passes through the 0-ring. , Led to water leakage accidents and corrosion of copper pipes themselves. Such burrs are processed by the above-described reamer chamfering jig. However, such chamfering defects are unavoidable. Even if sufficient chamfering is performed, the tip of the metal tube and the rubber-like chamfering Because of the contact with the 0-ring, damage to the 0-ring is inevitable.

本発明は上記のような金属管と継手との接合構造の新たな構造に関するものであり、継手内のＯ−リングを傷付けることなく接合する技術及びこれに用いる樹脂スリ−ブに係るものである。   The present invention relates to a new structure of a joint structure between a metal pipe and a joint as described above, and relates to a technique for joining without damaging an O-ring in the joint and a resin sleeve used therefor. .

本発明の第１の要旨は、Ｏ−リングを内蔵した継手内に金属管を差し込み、継手と金属管の内周面或いは外周面をＯ−リングにて止水して接続する接合構造であって、金属管の先端より当該金属管の先端面を覆う傘部を備えた樹脂スリ−ブを挿入したことを特徴とする金属管の接合構造にかかるものである。   The first gist of the present invention is a joining structure in which a metal pipe is inserted into a joint with a built-in O-ring, and the inner peripheral surface or outer peripheral surface of the joint and the metal pipe is stopped by the O-ring and connected. Thus, the present invention relates to a metal tube joining structure in which a resin sleeve having an umbrella portion covering the tip surface of the metal tube is inserted from the tip of the metal tube.

そして、本発明の第２の要旨は、前記発明に用いられる樹脂スリ−ブであり、金属管の先端を覆う傘部と金属管内に差し込まれる筒部とよりなり、当該筒部は金属管の長手方向にスリットが形成され、金属管の内面に弾発力をもって挿入されることを特徴とする、例えば、ＰＰＳ、ＰＥ、ＰＰ、ＰＶＣ等の耐浸出性能に優れた樹脂から選択された樹脂スリ−ブにかかるものである。   And the 2nd summary of this invention is the resin sleeve used for the said invention, Comprising: The umbrella part which covers the front-end | tip of a metal pipe, and the cylinder part inserted in a metal pipe, The said cylinder part is a metal pipe. A slit formed in the longitudinal direction and elastically inserted into the inner surface of the metal tube, for example, a resin sleeve selected from resins excellent in leaching resistance such as PPS, PE, PP, PVC, etc. -It is a thing concerning

本発明は以上の通りであり、継手内に挿入される金属管の先端面が樹脂製の傘で覆われていることから万一先端部に切断バリが残っていても、樹脂による傘によってこれが覆われてしまい、これと接触するＯ−リングには全く傷が付くことがなくなったものであり、実用価値の高い接合構造及び樹脂スリ−ブが提供できたものである。   The present invention is as described above, and since the tip surface of the metal tube inserted into the joint is covered with a resin umbrella, even if a cutting burr remains at the tip, this is caused by the umbrella made of resin. The O-ring that is covered and in contact with the O-ring is not damaged at all, and a highly practical joining structure and resin sleeve can be provided.

以下、本発明の第１を中心に述べるが、金属管の先端部における０−リングの破損を防止するため、銅管先端部に樹脂製のスリーブを差し込み、これによって金属管先端部の切断時のバリや鋭利な部分をカバ−することができたものである。よって、金属管の継手内への差し込み時に０−リングを破損することなく挿入が完了し、漏水の危険性が大幅に削減できることとなったものであり、更に、差し込み力が大きくなくて済むという特徴も合わせ持つものである。   Hereinafter, the first aspect of the present invention will be mainly described. In order to prevent damage to the 0-ring at the tip of the metal tube, a resin sleeve is inserted into the tip of the copper tube, thereby cutting the tip of the metal tube. It was possible to cover the burrs and sharp parts. Therefore, when the metal pipe is inserted into the joint, the insertion is completed without damaging the 0-ring, the risk of water leakage can be greatly reduced, and the insertion force is not required to be large. It also has characteristics.

金属管の先端に差し込まれるスリーブの材質は樹脂が最適であり、金属製のものでもでも可能だが、金属の場合は銅管との電食の懸念があるため安心できる材質とは言えない。このため、本発明は特に樹脂製のスリーブを採用することによって、軽量で腐食の懸念がなくなる。   The material of the sleeve inserted into the tip of the metal tube is optimally resin, and even a metal material is possible. However, in the case of metal, there is a concern of electrolytic corrosion with the copper tube, so it cannot be said that the material can be relieved. For this reason, especially by adopting a resin sleeve, the present invention is lightweight and eliminates the concern of corrosion.

又、飲料水の接水部に採用するため、浸出性能は十分確保する必要があり、中でも、ＰＰＳ、ＰＥ、ＰＰ、ＰＶＣ等の耐浸出性能に優れた材質を選定するべきである。   Moreover, since it is employ | adopted as a water-contact part of drinking water, it is necessary to ensure sufficient leaching performance, and should select the material excellent in leaching-resistant performance, such as PPS, PE, PP, PVC among them.

樹脂スリーブは、金属管の先端面を覆うに足る傘部と、金属管の内周側に差し込まれる筒部とよりなっており、この筒部には金属管の長手方向に向けてスリットが形成され、金属管の内周面に弾発性をもって装着されるものがよい。   The resin sleeve is composed of an umbrella portion sufficient to cover the tip surface of the metal tube and a cylindrical portion inserted into the inner peripheral side of the metal tube, and a slit is formed in the cylindrical portion toward the longitudinal direction of the metal tube. It is preferable that the metal tube is elastically attached to the inner peripheral surface.

尚、樹脂パイプを継手に接合するに際しては、樹脂パイプの先端に金属製のサポートスリーブを差し込み継手との接合に供されているが、かかるサポ−トスリ−ブは接合のために樹脂管が変形したり凹んだりすることを防ぐためのものであり、主として、樹脂管の表面にパイプ保持リングに備えた爪の食い込みを確実にするためのものであり、一方、本発明の場合には、バリや鋭利な部分を覆うためのものであり、その機能は全く異なることは明らかである。   When joining the resin pipe to the joint, a metal support sleeve is inserted at the tip of the resin pipe and used for joining with the joint. However, the support sleeve is deformed for joining. The main purpose is to prevent the nail provided in the pipe holding ring on the surface of the resin tube, and in the case of the present invention, It is for covering sharp and sharp parts, and its function is clearly different.

以下、本発明を図面をもって更に詳細に説明する。図１は本発明の第１の金属管の接合構造を示すものであり、継手１には拡径部１ａ内に管保持リング２、スぺ−サ−３、Ｏ−リング４を嵌め込み、これをソケット５にて抜けを阻止した形状のものである。そして、差し込まれる金属管１０の先端には樹脂スリ−ブ２０が差し込まれるものであり、金属管１０の先端面１１を覆う傘部２１と金属管１０内に差し込まれる筒部２２とよりなる樹脂スリ−ブである。   Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 shows a first metal tube joining structure according to the present invention. In a joint 1, a tube holding ring 2, a spacer 3 and an O-ring 4 are fitted in an enlarged diameter portion 1a. Is a shape in which the socket 5 is prevented from being pulled out. A resin sleeve 20 is inserted into the tip of the metal tube 10 to be inserted, and a resin comprising an umbrella portion 21 that covers the tip surface 11 of the metal tube 10 and a cylindrical portion 22 that is inserted into the metal tube 10. It is a sleeve.

図２は樹脂スリ−ブ２０を示す一部切断側面図であり、図３はその正面図である。金属管１０の先端面１１を覆う傘部２１と金属管１０内に差し込まれる筒部２２とよりなり、この筒部２２には複数のスリット２３が形成され、場合によっては突起２４が形成されている。これらによって筒部２２は金属管１０の内周面に弾発性をもって装着されるものである。   2 is a partially cut side view showing the resin sleeve 20, and FIG. 3 is a front view thereof. It comprises an umbrella portion 21 that covers the distal end surface 11 of the metal tube 10 and a cylindrical portion 22 that is inserted into the metallic tube 10. A plurality of slits 23 are formed in the cylindrical portion 22, and projections 24 are formed in some cases. Yes. Thus, the cylindrical portion 22 is attached to the inner peripheral surface of the metal tube 10 with elasticity.

樹脂製サポートスリーブを装着することにより、金属管（銅管）のみで差込をおこなった場合に比べて０−リングの破損率が大幅に減少することが確認された。即ち、従来の金属管では、８割程度がＯ−リングに影響を与えていたのに対し、本発明の場合には、Ｏ−リングへの影響はほとんど確認できなかった。   It was confirmed that the damage rate of the 0-ring was significantly reduced by attaching the resin support sleeve as compared with the case where the insertion was performed only with the metal tube (copper tube). That is, in the conventional metal pipe, about 80% affected the O-ring, but in the case of the present invention, the influence on the O-ring could hardly be confirmed.

本発明は以上の通りであり、金属管と接触するＯ−リングには全く傷が付くことがなくなったものであり、価値の高い接合構造が提供できたものである。   The present invention is as described above, and the O-ring in contact with the metal tube is not damaged at all, and a high-value joint structure can be provided.

図１は本発明の第１の金属管の接合構造を示すものである。FIG. 1 shows a first metal tube joining structure according to the present invention. 図２は本発明の第２の樹脂スリ−ブの一部側断面図である。FIG. 2 is a partial sectional side view of the second resin sleeve of the present invention. 図３は図２の樹脂スリ−ブの正面図である。FIG. 3 is a front view of the resin sleeve of FIG.

符号の説明Explanation of symbols

１‥継手、
１ａ‥継手の拡径部、
２‥管保持リング、
３‥スぺ−サ−、
４‥Ｏ−リング、
５‥ソケット、
１０‥金属管、
１１‥金属管の先端面、
２０‥樹脂スリ−ブ、
２１‥傘部、
２２‥筒部、
２３‥スリット、
２４‥突起。 1 ... Fitting,
1a ... Diameter expansion part of joint,
2. Tube holding ring,
3. Spacer,
4. O-ring,
5. Socket,
10. Metal pipe,
11. The tip of the metal tube,
20. Resin sleeve,
21. Umbrella,
22 ... cylinder part,
23 ... slit,
24 Projection.

Claims (3)

Ｏ−リングを内蔵した継手内に金属管を差し込み、継手と金属管の内周面或いは外周面をＯ−リングにて止水して接続する接合構造であって、金属管の先端より当該金属管の先端面を覆う傘部を備えた樹脂スリ−ブを挿入したことを特徴とする金属管の接合構造。   A joint structure in which a metal pipe is inserted into a joint incorporating an O-ring, and the inner peripheral surface or the outer peripheral surface of the joint and the metal pipe is stopped and connected by an O-ring. A metal tube joining structure, wherein a resin sleeve having an umbrella portion covering the tip end surface of the tube is inserted. 金属管の切断端部に差し込まれる樹脂スリ−ブであって、前記金属管の先端を覆う傘部と金属管内に差し込まれる筒部とよりなり、当該筒部は金属管の長手方向にスリットが形成され、金属管の内面に弾発力をもって挿入されることを特徴とする樹脂スリ−ブ。   A resin sleeve inserted into a cut end of a metal tube, comprising an umbrella portion covering the tip of the metal tube and a cylinder portion inserted into the metal tube, the cylinder portion having a slit in the longitudinal direction of the metal tube. A resin sleeve formed and inserted into the inner surface of a metal tube with elasticity. 前記樹脂スリ−ブは、ＰＰＳ、ＰＥ、ＰＰ、ＰＶＣ樹脂から選択された請求項２記載の樹脂スリ−ブ。   3. The resin sleeve according to claim 2, wherein the resin sleeve is selected from PPS, PE, PP, and PVC resins.
JP2004351601A 2004-12-03 2004-12-03 Metal pipe joint structure and resin sleeve to be used for the same Pending JP2006161891A (en)

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JP2004351601A JP2006161891A (en) 2004-12-03 2004-12-03 Metal pipe joint structure and resin sleeve to be used for the same

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008001652A1 (en) * 2006-06-29 2008-01-03 Surpass Industry Co., Ltd. Structure of connector for fluid tube
WO2008099841A1 (en) * 2007-02-16 2008-08-21 Nix, Inc. Pipe fitting
GB2471097A (en) * 2009-06-15 2010-12-22 Wavin Bv A push-fit pipe fitting system with support sleeve

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5945389U (en) * 1982-09-20 1984-03-26 前澤給装工業株式会社 Steel pipe connection structure
JPH0442985U (en) * 1990-08-09 1992-04-13
JPH0771680A (en) * 1993-08-31 1995-03-17 Bridgestone Corp Pipe reinforcing inner sleeve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5945389U (en) * 1982-09-20 1984-03-26 前澤給装工業株式会社 Steel pipe connection structure
JPH0442985U (en) * 1990-08-09 1992-04-13
JPH0771680A (en) * 1993-08-31 1995-03-17 Bridgestone Corp Pipe reinforcing inner sleeve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008001652A1 (en) * 2006-06-29 2008-01-03 Surpass Industry Co., Ltd. Structure of connector for fluid tube
JP2008008403A (en) * 2006-06-29 2008-01-17 Surpass Kogyo Kk Fluid-pipe connector structure
KR101497581B1 (en) * 2006-06-29 2015-03-02 사파스고교 가부시키가이샤 Structure of connector for fluid tube
WO2008099841A1 (en) * 2007-02-16 2008-08-21 Nix, Inc. Pipe fitting
JP2008202643A (en) * 2007-02-16 2008-09-04 Nix Inc Pipe joint
GB2471097A (en) * 2009-06-15 2010-12-22 Wavin Bv A push-fit pipe fitting system with support sleeve
GB2471097B (en) * 2009-06-15 2011-10-26 Wavin Bv Push-fit pipe fitting system with support sleeve

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