JPH0262498A - Tube fitting - Google Patents
Tube fittingInfo
- Publication number
- JPH0262498A JPH0262498A JP21448988A JP21448988A JPH0262498A JP H0262498 A JPH0262498 A JP H0262498A JP 21448988 A JP21448988 A JP 21448988A JP 21448988 A JP21448988 A JP 21448988A JP H0262498 A JPH0262498 A JP H0262498A
- Authority
- JP
- Japan
- Prior art keywords
- groove
- ring
- diameter
- joint body
- connecting pipe
- 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
Links
- 238000007789 sealing Methods 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000013459 approach Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 206010011224 Cough Diseases 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Joints With Pressure Members (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
Abstract
Description
【発明の詳細な説明】
、（産業上の利用分野）
本発明は、給湯管、給水管等の管材を所定の機器に接合
する際、あるいは管材同士を接合する際に使用される管
継手に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a pipe joint used when joining pipe materials such as hot water pipes and water supply pipes to predetermined equipment, or when joining pipe materials together. .
（従来の技術）
合成樹脂管、あるいは金属管の内周面または内外側周面
を合成樹脂で複覆しだ複合管を用いて。(Prior art) A composite pipe is used in which the inner circumferential surface or inner and outer circumferential surfaces of a synthetic resin tube or metal tube are covered with synthetic resin.
給湯管、給水管等を配管する際に使用される管継手が、
実開昭６１−２２９９１号公報に開示されている。Pipe fittings used when piping hot water pipes, water supply pipes, etc.
It is disclosed in Japanese Utility Model Application No. 61-22991.
該管継手は、第４図に示すように、−側部に。The pipe fitting is on the - side as shown in FIG.
バルブ等の機器や他の管継手に接続される円筒状の接続
部６３が設けられた継手本体６０を有する。該継手本体
６０の他側部には接続管５０の端部内に嵌合される円筒
状の案内部６２が設けられており、該案内部６２と接続
部６３との間に、外面六角形状のナット部６４が設けら
れている。該ナツト部６４には、筒状の締付は部材７０
の内面が六角形状になった連結部７１が嵌合されて固定
されている。該連結部７１の外面は、スパナ等の締付は
具が係合し得るように角形状になっている。該締付は部
材７０には、継手本体６０における案内部６２に所定の
間隔をあけて外嵌される締付は部７２が該連結部７１に
連設されている。該締付は部７２の外径は、連結部７１
の外径よりも小さく、その基端部外周面にはねじ溝が設
けられている。該締付は部７２の先端部には、先端から
軸方向に延びるスリットが周方向に適当な間隔をあけて
形成されており、従って該先端部は縮径可能となってい
る。そして、該締付は部７２のねし溝に袋ナツト８０が
螺合され、該袋ナツト８０を締付けることにより、該締
付は部７２先端部が縮径される。It has a joint body 60 provided with a cylindrical connecting portion 63 that is connected to equipment such as a valve or other pipe joints. A cylindrical guide part 62 that fits into the end of the connecting pipe 50 is provided on the other side of the joint body 60, and a hexagonal outer surface is provided between the guide part 62 and the connecting part 63. A nut portion 64 is provided. The nut portion 64 has a cylindrical tightening member 70.
A connecting portion 71 having a hexagonal inner surface is fitted and fixed. The outer surface of the connecting portion 71 has a rectangular shape so that a tightening tool such as a spanner can be engaged therewith. The tightening member 70 has a tightening portion 72 connected to the connecting portion 71 and externally fitted onto the guide portion 62 of the joint body 60 at a predetermined interval. The outer diameter of the tightening portion 72 is the same as that of the connecting portion 71.
The outer circumferential surface of the proximal end thereof has a threaded groove. At the tip of the tightening portion 72, slits extending in the axial direction from the tip are formed at appropriate intervals in the circumferential direction, so that the diameter of the tip can be reduced. Then, a cap nut 80 is screwed into the threaded groove of the portion 72, and by tightening the cap nut 80, the diameter of the tip portion of the portion 72 is reduced.
該管継手は１次のように使用される。まず、継手本体６
０の接続部６３を、バルブ等の所定部に装着し１袋ナツ
ト８０を緩めた状態で。The fitting is used in the following manner. First, the joint body 6
0 connection part 63 is attached to a predetermined part such as a valve, and one bag nut 80 is loosened.
継手本体６０における案内部６２と、締付は部材７０の
締付は部７２との間に接続管５０の端部を挿入する。The end of the connecting pipe 50 is inserted between the guide portion 62 of the joint body 60 and the tightening portion 72 of the tightening member 70.
そして２袋ナンド８０を回転させて締付けることにより
、締付は部材７０における締付は部７２先端部を縮径さ
せ、該締付は部７２先端部により接続管５０を。Then, by rotating and tightening the two-bag nand 80, the tightening in the member 70 reduces the diameter of the tip of the portion 72, and the tightening causes the tip of the portion 72 to connect the connecting pipe 50.
継手本体６０における案内部６２の外周面に設けられた
凹溝６２ａ内のシール部材９０に圧着させる。これによ
り、接続管５０の端部は、継手本体１０の案内部６２と
締付は部材７０の締付は部７２とにより挟持されて抜は
止めされると共に、シール部材９０により。The seal member 90 in the groove 62a provided on the outer circumferential surface of the guide portion 62 in the joint body 60 is crimped. As a result, the end of the connecting pipe 50 is held between the guide section 62 of the joint body 10 and the tightening section 72 of the tightening member 70 to prevent it from coming out, and is also prevented from coming out by the sealing member 90.
継手本体６００案内部６２と接続管５０との間が液密に
シールされる。The space between the guide portion 62 of the joint body 600 and the connecting pipe 50 is liquid-tightly sealed.
（発明が解決しようとする課題）
このような構成の従来の管継手では、継手本体６０の案
内部６２と、締付は部材７０の締付は部７２との間に接
続管５０の端部を挿入する際に、シール部材９０が締付
は部７２先端の対向位置からずれ、ひど（なると接続管
５０の先端でシール部材９０を案内部６２の凹溝６２ａ
から奥の方へ押しやってしまうおそれがある。(Problems to be Solved by the Invention) In the conventional pipe joint having such a configuration, there is a connection between the guide portion 62 of the joint body 60 and the fastening portion 72 of the fastening member 70 at the end of the connecting pipe 50. When inserting the seal member 90, the tightening of the seal member 90 may deviate from the position facing the tip of the portion 72, causing the seal member 90 at the tip of the connecting pipe 50 to become stuck in the concave groove 62a of the guide portion 62.
There is a risk that it will be pushed to the back.
また バルブ等の所定の機器に装着された継手本体６０
の案内部６２と締付は部材７０の締付は部７２との間に
接続管５０の端部を挿入し１袋ナツト８０を回転させて
該締付は部７２先端部を縮径させる際に。In addition, the joint body 60 is attached to a predetermined device such as a valve.
To tighten the member 70, insert the end of the connecting pipe 50 between the guide part 62 and the part 72, rotate the bag nut 80, and tighten the member 70. To.
該袋ナツト８０を過度に締付けると、締付は部材７０が
袋ナツト８０側に引き寄せられるおそれがある。If the cap nut 80 is excessively tightened, there is a risk that the member 70 will be drawn toward the cap nut 80 side.
その結果、締付は部材７０の締付は部７２先端部が継手
本体６０の案内部６２外周面に設けられた凹溝６２ａの
対向位置からずれ、接続管５０がシール部材９０に確実
に圧着されないおそれがある。このようになれば、漏水
の原因となり、また、接続管５０が案内部６２と締付は
部７２との間から抜けるおそれもある。As a result, when tightening the member 70, the tip of the part 72 deviates from the position facing the groove 62a provided on the outer peripheral surface of the guide part 62 of the joint body 60, and the connecting pipe 50 is securely crimped to the sealing member 90. There is a possibility that it will not be done. If this happens, it may cause water leakage, and there is also a risk that the connecting pipe 50 may come off from between the guide portion 62 and the fastening portion 72.
本発明は上記従来の問題を解決するものでありその目的
は、接合された接続管を確実に抜は止めし、かつその接
続管との接合部との漏水性に優れた管継手を提供するこ
とにある。The present invention solves the above-mentioned conventional problems, and its purpose is to provide a pipe joint that reliably prevents the connected connecting pipe from being pulled out and has excellent water leakage properties at the joint with the connecting pipe. There is a particular thing.
（課題を解決するための手段）
本発明の管継手は、接続すべき接続管に内嵌される円筒
状でその外周部に環状の凹溝が周方向に設けられた案内
部を有する継手本体と、該継手本体の案内部における凹
溝内に該案内部の軸方向への摺動可能に配設されており
、縮径力の作用により該凹溝内を摺動し得るように外周
面がテーバ状になったスライドリングと、該スライドリ
ングの摺動により該スライドリングにて圧縮されて径方
向へ膨出するように、前記案内部の凹溝内に嵌合された
シール部材と、該継手本体の案内部に接続管が挿入され
る間隙を有して同心状に外嵌されており、該案内部の凹
溝に対向する部分が縮径可能である締付はリングと、該
締付はリングの縮径可能な部分を縮径させるべく該締付
はリングに外嵌されており、前記案内部の凹溝内に配設
されたストライドリングに縮径力を作用させるべく該締
付はリングに内嵌された接続管を変形させる圧縮部材と
、を具備してなり、そのことにより上記目的が達成され
る。(Means for Solving the Problems) The pipe joint of the present invention has a cylindrical guide part that is fitted into a connecting pipe to be connected and has an annular groove provided in the circumferential direction on the outer periphery of the joint body. and is disposed so as to be slidable in the axial direction of the guide part in a groove in the guide part of the joint body, and the outer circumferential surface is slidable in the groove in the groove by the action of diameter reduction force. a slide ring having a tapered shape, and a seal member fitted into a concave groove of the guide portion so as to be compressed by the slide ring and bulge in the radial direction as the slide ring slides; The connecting pipe is fitted concentrically to the guide part of the joint body with a gap for insertion, and the part of the guide part facing the concave groove can be reduced in diameter. The tightening is fitted onto the ring so as to reduce the diameter of the part of the ring that can be reduced in diameter, and the tightening is applied to apply a reducing force to the stride ring disposed in the concave groove of the guide section. The tightening comprises a compression member which deforms the connecting tube fitted in the ring, whereby the above object is achieved.
（実施例） 以下に本発明を実施例について説明する。(Example) The present invention will be described below with reference to Examples.
本発明の管継手は、第１図（ａ）に示すように、継手本
体１０．締付はリング４０および圧縮部材としての袋ナ
ツト５０を有している。As shown in FIG. 1(a), the pipe joint of the present invention has a joint main body 10. The tightening device has a ring 40 and a cap nut 50 as a compression member.
継手本体１０は、中央部に例えば外面六角形状のナツト
部１１を有し、該ナツト部１１の一端面には円筒状の案
内部１２が設けられ、他端面に管状の接続部１３が設け
られている。案内部１２は接続すべき接続管５０内に嵌
合され得るように、該接続管５０の内径より若干小さい
外径を有している。該案内部１２の先端近傍部外周面に
は１周方向に環状の凹溝１４が全周にわたって設けられ
ている。該凹溝１４は。The joint body 10 has, for example, a hexagonal outer nut portion 11 in the center, a cylindrical guide portion 12 is provided on one end surface of the nut portion 11, and a tubular connecting portion 13 is provided on the other end surface. ing. The guide portion 12 has an outer diameter slightly smaller than the inner diameter of the connecting tube 50 so that it can be fitted into the connecting tube 50 to be connected. An annular groove 14 is provided on the outer circumferential surface of the guide portion 12 in the vicinity of the tip end thereof in one circumferential direction over the entire circumference. The groove 14 is.
第２図（ａ）に示すように、案内部１２外周面とは平行
な底面１４ａと該底面１４ａに対して直角な状態となっ
た一対の側面１４ｂおよび１４ｂとにより構成されてい
る。該凹溝１４の深さは案内部１２の厚みにより変化す
るが１通常は接続管６０の厚みの１７２程度に設定され
ている。As shown in FIG. 2(a), the guide portion 12 is composed of a bottom surface 14a parallel to the outer peripheral surface and a pair of side surfaces 14b and 14b perpendicular to the bottom surface 14a. The depth of the concave groove 14 varies depending on the thickness of the guide portion 12, but is usually set to about 172 times the thickness of the connecting pipe 60.
該凹溝１４内には、２本のスライドリング１５ａおよび
１５ｂと、２本の環状のシール部材１６および１６とが
嵌合されている。Two slide rings 15a and 15b and two annular seal members 16 and 16 are fitted into the groove 14.
２本のスライドリング１５ａおよび１５ｂは、該凹溝１
４内の中央部に嵌合されている。案内部１２の先端側に
位置する一方のスライドリング１５ａは、外周面が先端
側になるにつれて外径が漸増するテーパー状になってい
る。案内部１２の基端側に位置する他方のスライドリン
グ１５ｂの外周面は、上記スライドリング１５ａとは逆
に、基端側になるにつれて外径が漸増するテーパー状に
なっている。いずれのスライドリング１５ａおよび１５
ｂ も、凹溝１４の底面１４ａにゆるく外嵌し、テーパ
ー状外周面に半径方向への縮径力が作用した場合に、該
凹溝１４の底面１４ａに沿って相互に離反する方向へ移
動するようになっている。スライドリング１．５ａおよ
び１５ｂの外径は、案内部１２の外径よりは小さく、凹
溝１４内に収容されるのが好ましいが、接続管５０内径
より小さければ凹溝１４より多少飛び出ていてもよい。The two slide rings 15a and 15b are arranged in the groove 1.
It is fitted in the center part of the inner part of 4. One slide ring 15a located on the distal end side of the guide portion 12 has a tapered outer circumferential surface whose outer diameter gradually increases as it approaches the distal end side. The outer peripheral surface of the other slide ring 15b located on the proximal end side of the guide portion 12 has a tapered shape in which the outer diameter gradually increases toward the proximal end, contrary to the slide ring 15a. Which slide rings 15a and 15
b are also loosely fitted onto the bottom surface 14a of the groove 14, and move in directions away from each other along the bottom surface 14a of the groove 14 when a diameter reducing force in the radial direction is applied to the tapered outer peripheral surface. It is supposed to be done. The outer diameters of the slide rings 1.5a and 15b are preferably smaller than the outer diameter of the guide portion 12 and accommodated in the groove 14, but if they are smaller than the inner diameter of the connecting pipe 50, they may protrude somewhat from the groove 14. Good too.
シール部材工６および１６は１例えばゴム製の０リング
が用いられており、各スライドリング１５ａおよび１５
ｂを軸線方向の両側から挟むように凹溝１４内に嵌合さ
れている。スライドリング１５ａおよび１５ｂとシール
部材１６および１６は、スライドリング１５ａおよび１
５ｂが僅かに軸方向へ移動してもシール部材１６および
１６が軸方向に圧縮されるように。For example, rubber O-rings are used for the sealing members 6 and 16, and each slide ring 15a and 15
b is fitted into the groove 14 so as to sandwich it from both sides in the axial direction. Slide rings 15a and 15b and seal members 16 and 16 are
so that even if 5b moves slightly in the axial direction, the sealing members 16 and 16 are compressed in the axial direction.
凹溝１４の各側面１４ｂおよび１４ｂとスライドリング
１５ａおよび１５ｂにて緩く圧縮された状態になってい
る。シール部材１６および１６の外径は、案内部１２の
外径よりは若干小さ（、スライドリング１５ａおよび１
５ｂの外径よりは若干小さく設定されている。The groove 14 is in a loosely compressed state between the side surfaces 14b and 14b and the slide rings 15a and 15b. The outer diameters of the seal members 16 and 16 are slightly smaller than the outer diameter of the guide portion 12 (and the slide rings 15a and 16).
It is set slightly smaller than the outer diameter of 5b.
これにより、案内部１２に接続管５０の端部が外嵌され
た場合に、該接続管５０の端部内周面をスライドリング
１５ａおよび１５ｂの最大外径部分で案内することによ
り、シール部材１６および１６が接続管５０の端面で傷
付いたり、端面で押されて凹溝１４から脱出することが
防止される。As a result, when the end of the connecting tube 50 is externally fitted onto the guide portion 12, the sealing member 16 and 16 are prevented from being damaged by the end face of the connecting pipe 50 or being pushed by the end face and escaping from the groove 14.
継手本体１０における接続部１３は、第１図（ａ）に示
すように、案内部１２よりも若干大きい内径および外径
を有し、ナツト部１１を介して案内部１２内に連通して
いる。該接続部１３の外周面には、バルブ等の機器と接
続されるように、ねじ溝が形成されている。As shown in FIG. 1(a), the connecting portion 13 in the joint body 10 has an inner diameter and an outer diameter slightly larger than the guide portion 12, and communicates with the inside of the guide portion 12 via the nut portion 11. . A thread groove is formed on the outer peripheral surface of the connecting portion 13 so as to be connected to a device such as a valve.
締付はリング４０は、継手本体１０のナツト部１１に外
嵌された鍔部４１と、継手本体１０の案内部１２とは所
定の間隙を有して外嵌されるように該鍔部４１の一端面
に設けられた円筒状の縮径部４２と、ををする。鍔部４
１は、継手本体１０のナツト部１１外周面に密着する内
周面を有し、またその外周面は、スパナ等の締付は工具
が係止し得るように１例えば六角形状になっている。To tighten the ring 40, the flange 41 is fitted onto the nut 11 of the joint body 10 and the guide part 12 of the joint body 10 is fitted with a predetermined gap between the flange 41 and the guide part 12 of the joint body 10. A cylindrical diameter-reduced portion 42 provided on one end surface is used. Tsuba 4
1 has an inner circumferential surface that closely contacts the outer circumferential surface of the nut portion 11 of the joint body 10, and the outer circumferential surface has a hexagonal shape, for example, so that a tightening tool such as a spanner can be locked therein. .
円筒状の縮径部４２の先端は、継手本体１０の案内部１
２外周面に設けられた凹溝１４内のスライドリング１５
ａおよび１５ｂに対向している。該縮径部４２は。The tip of the cylindrical reduced diameter portion 42 is connected to the guide portion 1 of the joint body 10.
2 Slide ring 15 in groove 14 provided on the outer peripheral surface
a and 15b. The reduced diameter portion 42 is.
先端部に軸線方向に延びる複数の切欠き部４２ａが周方
向に適当な間隙をあけて配設されており、該先端部が外
部から加わる径方向への縮径力にて縮径され得る。該縮
径部４２の外周には、切欠き部４２ａが形成された先端
部を除いて、ねじ溝４２ｂが設けられている。該縮径部
４２の内径は、継手本体１０の案内部１２に外嵌される
接続管５０の外径よりも若干大きくなっている。A plurality of notches 42a extending in the axial direction are arranged at appropriate intervals in the circumferential direction at the distal end, and the diameter of the distal end can be reduced by a radial reducing force applied from the outside. A thread groove 42b is provided on the outer periphery of the reduced diameter portion 42, except for the tip portion where the cutout portion 42a is formed. The inner diameter of the reduced diameter portion 42 is slightly larger than the outer diameter of the connecting pipe 50 that is fitted onto the guide portion 12 of the joint body 10 .
袋ナツト３０は、内径に円筒空間を有する角筒状をして
いる。その内周面の一側部には、前記締付はリング４０
の縮径部４２外周面に設けられたねじ溝４２ｂと螺合す
るねじ溝３１が形成されており、咳ねし溝３１が縮径部
４２のねし溝４２ｂに螺合するようになっている。該袋
ナンド３０は、該ねじ溝３１に連続する内周面の中央部
が、ねじ溝３１から離れるに連れて徐々に縮径するテー
パ面３２となっており該テーバ面３２が前記縮径部４２
の先端に当接し得る。袋ナツト３０のねじ溝３１が形成
された一側部とは反対側の側部の内周面３３は、該テー
バ面３２に連続しており、その内径は一定で、締付はリ
ング４０の縮径部４２の外径よりも若干小さくなってい
る。The cap nut 30 has a rectangular tube shape with a cylindrical space in its inner diameter. On one side of its inner peripheral surface, the tightening ring 40
A threaded groove 31 is formed to engage with a threaded groove 42b provided on the outer peripheral surface of the reduced diameter portion 42, and the cough groove 31 is adapted to be threaded into the threaded groove 42b of the reduced diameter portion 42. There is. The center part of the inner peripheral surface of the bag nand 30 that is continuous with the thread groove 31 is a tapered surface 32 whose diameter gradually decreases as the distance from the thread groove 31 increases. 42
can come into contact with the tip of the The inner circumferential surface 33 of the cap nut 30 on the side opposite to the one side where the thread groove 31 is formed is continuous with the tapered surface 32, has a constant inner diameter, and is tightened by the ring 40. It is slightly smaller than the outer diameter of the reduced diameter portion 42.
このような構成の管継手と接続管との接続は次のように
行われる。Connection between the pipe joint having such a configuration and the connecting pipe is performed as follows.
締付はリング４０の縮径部４２外周面のねじ溝４２ｂに
袋ナツト３０のねじ溝３１を緩く螺合させた状態で。Tighten with the thread groove 31 of the cap nut 30 loosely screwed into the thread groove 42b on the outer peripheral surface of the reduced diameter portion 42 of the ring 40.
該袋ナツト３０を通して、締付はリング４０の縮径部４
２と継手本体１０の案内部１２の間隙内に接続管５０を
挿入する。そして、該接続管５０の端面を継手本体１０
のナツト部１１端面に突き当てる。Through the cap nut 30, the tightening is performed using the reduced diameter portion 4 of the ring 40.
2 and the guide portion 12 of the joint body 10, the connecting pipe 50 is inserted into the gap. Then, the end face of the connecting pipe 50 is connected to the joint body 10.
abut against the end face of the nut portion 11 of.
このような状態で１袋ナツト３０を回転させて。Rotate one bag of nuts 30 in this state.
該袋ナツト３０を締付はリング４０の鍔部４１に接近す
るように、縮径部４２に対してねし送りする。袋ナンド
３０がねし送りされると、該袋ナツト３０の内周面中央
部のテーバ面３２が縮径部４２の先端に当接し。To tighten the cap nut 30, the cap nut 30 is threaded toward the reduced diameter portion 42 so as to approach the flange portion 41 of the ring 40. When the cap nut 30 is fed, the tapered surface 32 at the center of the inner peripheral surface of the cap nut 30 comes into contact with the tip of the reduced diameter portion 42.
さらに袋ナツト３０が回転して同方向にねし送りされる
と、切欠き部４２ａが設けられた縮径部４２先端部が該
テーバ面３２により縮径される。これにより。When the cap nut 30 is further rotated and threaded in the same direction, the diameter of the tapered surface 32 is reduced at the tip of the reduced diameter portion 42 provided with the notch 42a. Due to this.
該縮径部４２先端は、第１図（ｂ）に示すように、接続
管５０の外周面を全周にわたって内方へ押圧し、該接続
管５０の一部を変形させて凹状に窪まず。As shown in FIG. 1(b), the tip of the reduced diameter portion 42 presses the outer peripheral surface of the connecting tube 50 inward over the entire circumference, deforming a part of the connecting tube 50 so that it does not become depressed. .
接続管５０の窪んだ部分は、第２図（ｂ）に示すように
、継手本体１０における案内部１２の凹溝１４内に嵌合
された２本のスライドリング１５ａおよび１５ｂのテー
パー状外周面を外周側から半径方向に縮径させる。これ
により２本のスライドリング１５ａおよび１５ｂはくさ
び作用により互いに離反する方向へ移動する。案内部１
２の先端側のスライドリング１５ａが該案内部１２の先
端側へ移動することにより、該案内部１２の先端側に位
置するシール部材１６が凹溝１４の案内部１２に先端側
側面１４ｂと該スライドリング１５ａとにより圧縮され
、外周側へ膨出する。案内部１２の基部側のシール部材
１６はスライドリング１５ｂと凹溝１４の端面とにより
圧縮されて同様に外周側へ膨出する。その結果、シール
部材１６および１６は凹溝１４の底面１４ａと接続管５
０の外周面とに密着され、接続管５０と案内部１２との
間を液密にシールする。As shown in FIG. 2(b), the recessed portion of the connecting pipe 50 corresponds to the tapered outer peripheral surface of the two slide rings 15a and 15b fitted in the groove 14 of the guide portion 12 in the joint body 10. The diameter is reduced in the radial direction from the outer circumferential side. This causes the two slide rings 15a and 15b to move away from each other due to the wedge action. Guide section 1
As the slide ring 15a on the distal end side of the guide section 12 moves toward the distal end side of the guide section 12, the seal member 16 located on the distal end side of the guide section 12 is brought into contact with the distal side side surface 14b of the guide section 12 of the concave groove 14. It is compressed by the slide ring 15a and expands toward the outer circumference. The seal member 16 on the base side of the guide portion 12 is compressed by the slide ring 15b and the end face of the groove 14, and similarly bulges toward the outer circumference. As a result, the sealing members 16 and 16 are connected to the bottom surface 14a of the groove 14 and the connecting pipe 5.
The connecting pipe 50 and the guide portion 12 are in close contact with the outer circumferential surface of the connecting pipe 50 and the guide portion 12, thereby liquid-tightly sealing the space between the connecting pipe 50 and the guide portion 12.
このとき、接続管５０の富んだ部分は、２本のスライド
リング１５ａおよび１５ｂの間に嵌入し、各スライドリ
ング１５ａおよび１５ｂ と締付はリング４０の縮径部
４２とにより挟持される。その結果、該接続管５０の端
部は、継手本体１０の案内部１２および締付はリング４
０の縮径部４２に嵌合された状態で抜は止めされる。At this time, the full portion of the connecting tube 50 is fitted between the two slide rings 15a and 15b, and is held between each slide ring 15a and 15b and the reduced diameter portion 42 of the tightening ring 40. As a result, the end of the connecting pipe 50 is connected to the guide portion 12 of the joint body 10 and the tightening ring 4
Removal is prevented in a state where it is fitted into the reduced diameter portion 42 of 0.
第３図（ａ）および（ｂ）は本発明の他の実施例を示す
案内部１２先端部の断面図である。本実施例では。FIGS. 3(a) and 3(b) are sectional views of the tip of the guide portion 12 showing another embodiment of the present invention. In this example.
継手本体１０における案内部１２の凹溝１４内に１本の
スライドリング１５ｃが、案内部１２の軸方向に摺動可
能に遊嵌されている。該スライドリング１５ｃは。A slide ring 15c is loosely fitted into the groove 14 of the guide section 12 in the joint body 10 so as to be slidable in the axial direction of the guide section 12. The slide ring 15c is.
外周面が案内部１２の基端側になるにつれて外径が漸増
するテーパ状になっており、シール部材１６は。The sealing member 16 has a tapered outer circumferential surface whose outer diameter gradually increases as it approaches the proximal end of the guide portion 12.
凹溝１４内のスライドリング１５ｃにおける案内部１２
基端側に隣接して嵌合されている。また、第１図の実施
例と同様に、締付はリング４０の縮径部４２の先端は、
凹溝１４内のスライドリング１５ｃの外周面に対向して
いる。Guide portion 12 in slide ring 15c in groove 14
It is fitted adjacent to the proximal end side. Further, as in the embodiment shown in FIG. 1, the tip of the reduced diameter portion 42 of the ring 40 is
It faces the outer peripheral surface of the slide ring 15c within the groove 14.
本実施例の場合も、第１図の実施例と同様に。This embodiment is similar to the embodiment shown in FIG.
締付はリング４０の縮径部４２に対して袋ナツト３０を
ねじ送りすることにより、接続管５０の管壁が内周側へ
窪み、スライドリング１５ｃのテーパ状外周面が外周側
から径方向へ縮径される。これによりスライドリング１
５ｃは案内部１２の基端側へ移動しスライドリング１５
に隣接して嵌合されているシール部材１６を凹溝１４の
側面１４ｂと該スライドリング１５ｃとにより圧縮する
。その結果、シール部材１６は外周側へ膨出し、接続管
５０と案内部１２との間を液密にシールする。このとき
、同時に、接続管５０は継手本体１０の案内部１２と締
付はリング４０の縮径部４２とにより挟持される。Tightening is carried out by threading the cap nut 30 against the reduced diameter portion 42 of the ring 40, so that the wall of the connecting pipe 50 is recessed toward the inner circumferential side, and the tapered outer circumferential surface of the slide ring 15c is radially moved from the outer circumferential side. The diameter is reduced to This allows slide ring 1
5c moves toward the proximal end of the guide portion 12 and slides into the slide ring 15.
The seal member 16 fitted adjacent to the groove 14 is compressed by the side surface 14b of the groove 14 and the slide ring 15c. As a result, the sealing member 16 swells toward the outer periphery and provides a fluid-tight seal between the connecting pipe 50 and the guide portion 12. At this time, the connecting pipe 50 is simultaneously held between the guide portion 12 of the joint body 10 and the reduced diameter portion 42 of the tightening ring 40.
（発明の効果）
本発明の管継手は、このように、継手本体の案内部に外
嵌された接続管の端部における一部を縮径させ、該案内
部の凹溝内に設けられたスライドリングを該凹溝内にて
接続管の軸方向に摺動させることにより１該凹溝内に嵌
合されたシール部材を圧縮して該シール部材を径方向へ
膨出させているため、該案内部と接続管との間が該シー
ル部材により確実にシールされる。また、このシールは
スライドリングによる押付力が小さ（でも、太き（でも
確実となるため、締付はリングの締付度合に多少の差が
生じても、また接続管の径に多少のハラつきがあっても
確実にシールできる。(Effects of the Invention) In this way, the pipe joint of the present invention reduces the diameter of a part of the end of the connecting pipe that is fitted onto the guide part of the joint body, and By sliding the slide ring in the axial direction of the connecting pipe within the groove, the seal member fitted in the groove is compressed and the seal member expands in the radial direction. The sealing member reliably seals between the guide portion and the connecting pipe. In addition, this seal has a small (but thick) pressing force from the slide ring, so it is reliable, so it can be tightened even if there is a slight difference in the degree of tightening of the ring, or even if there is some variation in the diameter of the connecting pipe. Can be reliably sealed even if there is a stick.
さらに、シール部材は、圧縮されない状態では。Additionally, the seal member is in an uncompressed state.
案内部に外嵌される接続管内周面とはほとんど摺接しな
いため、該シール部材が凹溝内からずれるおそれがない
。また、シール部材として、シール効果の高いＯリング
を使用し得るため、シール効果をより一層向上させるこ
とができる。Since there is almost no sliding contact with the inner circumferential surface of the connecting tube that is fitted onto the guide portion, there is no risk that the sealing member will shift from the inside of the concave groove. Furthermore, since an O-ring with a high sealing effect can be used as the sealing member, the sealing effect can be further improved.
４、′ のＩＣ−なｉゝ■ 第１図（ａ）は本発明の管継手の一部破断側面図。4. IC-naiゝ■ FIG. 1(a) is a partially cutaway side view of the pipe joint of the present invention.
第１図（ｂ）はその動作説明のための一部破断側面図第
２図（ａ）は第１図（ａ）における要部拡大図、第２図
（ｂ）は第１図（ｂ）における要部拡大図、第３図（ａ
）は本発明の管継手の他の実施例の要部断面図、第３図
（ｂ）はその動作説明図、第４図は従来の管継手の一部
破断側面図である。Fig. 1(b) is a partially cutaway side view for explaining its operation. Fig. 2(a) is an enlarged view of the main part in Fig. 1(a), and Fig. 2(b) is the same as Fig. 1(b). Enlarged view of the main parts in Figure 3 (a
) is a sectional view of a main part of another embodiment of the pipe joint of the present invention, FIG. 3(b) is an explanatory diagram of its operation, and FIG. 4 is a partially cutaway side view of a conventional pipe joint.
１０・・・継手本体、１２・・・案内部、１４・・・凹
溝。10... Joint body, 12... Guide portion, 14... Concave groove.
１５ａ 、 １５ｂ 、 １５ｃ・・・スライドリング
、１６・・・シール部材、３０・・・袋ナツト、４０・
・・締付はリング、５０・・・接続管。15a, 15b, 15c... Slide ring, 16... Seal member, 30... Cap nut, 40...
...Tighten with a ring, 50...connection pipe.
以上that's all
Claims (1)
に環状の凹溝が周方向に設けられた案内部を有する継手
本体と、 該継手本体の案内部における凹溝内に該案内部の軸方向
への摺動可能に配設されており、縮径力の作用により該
凹溝内を摺動し得るように外周面がテーパ状になったス
ライドリングと、 該スライドリングの摺動により該スライドリングにて圧
縮されて径方向へ膨出するように、前記案内部の凹溝内
に嵌合されたシール部材と、該継手本体の案内部に接続
管が挿入される間隙を有して同心状に外嵌されており、
該案内部の凹溝に対向する部分が縮径可能である締付け
リングと、 該締付けリングの縮径可能な部分を縮径させるべく該締
付けリングに外嵌されており、前記案内部の凹溝内に配
設されたストライドリングに縮径力を作用させるべく該
締付けリングに内嵌された接続管を変形させる圧縮部材
と、 を具備する管継手。[Scope of Claims] 1. A joint body having a cylindrical guide part that is fitted into a connecting pipe to be connected and has an annular groove circumferentially provided on its outer periphery, and a guide part of the joint body. a slide ring that is disposed so as to be slidable in the axial direction of the guide part in a groove, and has a tapered outer circumferential surface so as to be able to slide in the groove by the action of a diameter-reducing force; and a sealing member fitted into the groove of the guide portion and connected to the guide portion of the joint body so that the slide ring is compressed by the slide ring and bulges in the radial direction as the slide ring slides. It is fitted concentrically to the outside with a gap into which the tube is inserted,
a tightening ring whose diameter can be reduced in a portion facing the concave groove of the guide portion; A pipe joint comprising: a compression member that deforms a connecting pipe fitted into the tightening ring so as to apply a diameter reducing force to a stride ring disposed therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21448988A JPH0718515B2 (en) | 1988-08-29 | 1988-08-29 | Pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21448988A JPH0718515B2 (en) | 1988-08-29 | 1988-08-29 | Pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0262498A true JPH0262498A (en) | 1990-03-02 |
| JPH0718515B2 JPH0718515B2 (en) | 1995-03-06 |
Family
ID=16656562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21448988A Expired - Lifetime JPH0718515B2 (en) | 1988-08-29 | 1988-08-29 | Pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0718515B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388871A (en) * | 1992-05-22 | 1995-02-14 | Kakizaki Manufacturing Co., Ltd. | Fittings with box nuts |
| US5776239A (en) * | 1995-10-27 | 1998-07-07 | E. I. Du Pont De Nemours And Company | Hydrothermal process for making ultafine metal oxide powders |
| US7300076B2 (en) * | 2004-09-29 | 2007-11-27 | Higashio Mech Co., Ltd. | Pipe joint |
| JP2010139061A (en) * | 2008-11-14 | 2010-06-24 | Nippon Flex Kk | Hose connector |
| CN106402548A (en) * | 2016-12-20 | 2017-02-15 | 浙江省新昌县华佳国财塑胶有限公司 | Flexible-pipe adapter connector |
-
1988
- 1988-08-29 JP JP21448988A patent/JPH0718515B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388871A (en) * | 1992-05-22 | 1995-02-14 | Kakizaki Manufacturing Co., Ltd. | Fittings with box nuts |
| US5776239A (en) * | 1995-10-27 | 1998-07-07 | E. I. Du Pont De Nemours And Company | Hydrothermal process for making ultafine metal oxide powders |
| US7300076B2 (en) * | 2004-09-29 | 2007-11-27 | Higashio Mech Co., Ltd. | Pipe joint |
| JP2010139061A (en) * | 2008-11-14 | 2010-06-24 | Nippon Flex Kk | Hose connector |
| CN106402548A (en) * | 2016-12-20 | 2017-02-15 | 浙江省新昌县华佳国财塑胶有限公司 | Flexible-pipe adapter connector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0718515B2 (en) | 1995-03-06 |
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