JP2561694B2 - Pipe fitting - Google Patents
Pipe fittingInfo
- Publication number
- JP2561694B2 JP2561694B2 JP63072649A JP7264988A JP2561694B2 JP 2561694 B2 JP2561694 B2 JP 2561694B2 JP 63072649 A JP63072649 A JP 63072649A JP 7264988 A JP7264988 A JP 7264988A JP 2561694 B2 JP2561694 B2 JP 2561694B2
- Authority
- JP
- Japan
- Prior art keywords
- connecting pipe
- joint body
- retaining ring
- pipe
- joint
- 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 - Lifetime
Links
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は水道管，ガス管等の配管に使用される管継手
に関する。TECHNICAL FIELD The present invention relates to a pipe joint used for piping such as a water pipe and a gas pipe.
（従来の技術） 水道管などの配管に使用される管継手として，近時，
接続すべき管を挿入するだけで，該接続管を固定し得る
差し込み式の管継手が開発されている。このような差し
込み式の管継手は，接続管の端部を容易に挿入すること
ができると共に，挿入された接続管の端部が容易に抜け
ないことが必要である。このため，差し込み式の管継手
では，通常，特公昭54−21905号公報，特公昭55−25317
号公報等に開示されているように，筒状の継手本体内に
接続管を固定するための割りリングが設けられている。
該割りリングは，周方向の一部が分割されており，縮径
及び拡径が可能である。該割りリングは，接続管の端部
に外嵌されていない状態では，接続管よりも若干小径と
なっており，接続管が継手本体内に挿入された際に，該
接続管が割りリング内に挿入される。該割りリングは接
続管が挿入されることにより拡径し，接続管外周面に外
嵌される。接続管が継手本体内から抜けようとする場合
には，割りリングは継手本体内周面におけるテーパ部に
当接して，縮径され，接続管に係止される。(Prior art) Recently, as a pipe joint used for piping such as water pipes,
Plug-in type pipe joints have been developed which can fix the connecting pipe by simply inserting the pipe to be connected. In such a plug-in type pipe joint, it is necessary that the end of the connecting pipe can be easily inserted and the end of the inserted connecting pipe cannot be easily pulled out. For this reason, plug-in type pipe joints are normally used in Japanese Patent Publication No. Sho 21-21905 and Japanese Examined Patent Publication No. 55-25317.
As disclosed in Japanese Unexamined Patent Publication (Kokai), etc., a split ring for fixing the connecting pipe is provided in the tubular joint body.
The split ring is partly divided in the circumferential direction and can be reduced in diameter and expanded in diameter. The split ring has a diameter slightly smaller than that of the connecting pipe when it is not fitted over the end portion of the connecting pipe, and when the connecting pipe is inserted into the joint main body, the connecting pipe is inside the split ring. Inserted in. The split ring expands in diameter when the connecting pipe is inserted and is fitted onto the outer peripheral surface of the connecting pipe. When the connecting pipe tries to come out from the inside of the joint body, the split ring comes into contact with the tapered portion on the inner peripheral surface of the joint body, is reduced in diameter, and is locked to the connecting pipe.
（発明が解決しようとする課題） このような従来の管継手では，接続管と割りリングと
の係止力を増加させるためには，割りリングが接続管に
広い面積にて係止するように，割りリングを接続管の軸
方向に長くしなければならない。しかし，このようにす
れば，割りリングの断面積が大きくなり，該割りリング
内に接続管を挿入する際に多大な力を要する。また，割
りリングを変形させることが困難になるため，該割りリ
ングを継手本体内の所定位置に嵌入することが容易でな
い。(Problems to be Solved by the Invention) In such a conventional pipe joint, in order to increase the locking force between the connecting pipe and the split ring, the split ring is locked to the connecting pipe in a large area. ， The split ring shall be long in the axial direction of the connecting pipe. However, in this case, the sectional area of the split ring becomes large, and a great deal of force is required when inserting the connecting pipe into the split ring. Further, since it becomes difficult to deform the split ring, it is not easy to fit the split ring at a predetermined position in the joint body.
水道用の配管では，管には通常は,10kg/cm2程度の水
圧しか加わらないが，最大40kg/cm2程度の水圧に耐え得
る必要がある。このため，最大40kg/cm2程度の水圧が加
わった場合にも，継手本体から接続管が抜けないよう
に，割りリングを接続管に強く固定しなければならな
い。しかし，低水圧しか加わらない通常時に，割りリン
グを強く接続管に係止させていれば，接続管の劣化が促
進され，耐久性が低下する。In the case of water pipes, the pipe is normally only subjected to a water pressure of about 10 kg / cm 2, but it must withstand a maximum water pressure of about 40 kg / cm 2 . Therefore, the split ring must be firmly fixed to the connecting pipe so that the connecting pipe does not come off from the joint body even when a maximum water pressure of about 40 kg / cm 2 is applied. However, if the split ring is strongly locked to the connecting pipe at normal times when only low water pressure is applied, deterioration of the connecting pipe is promoted and durability is reduced.
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，継手本体内へ接続管を比較的小さな力で挿入
することができ，しかも，接続管の継手本体からの抜け
止め効果の大きい管継手を提供することにある。The present invention solves the above-mentioned conventional problems, and an object thereof is to be able to insert a connecting pipe into a joint body with a comparatively small force, and to prevent the connecting pipe from coming off from the joint body. It is to provide a large pipe joint.
本発明のさらに他の目的は，接続管に加わる圧力が小
さい場合には，該接続管への係止力が比較的小さい管継
手を提供することにある。Still another object of the present invention is to provide a pipe joint having a relatively small locking force to the connecting pipe when the pressure applied to the connecting pipe is small.
（課題を解決するための手段） 本発明の管継手は，接続管の端部が一端の開口部から
挿入される筒状であって，その内周側部分には，該開口
部側になるに連れて徐々に縮径する円錐状テーパ部を有
する複数の凹溝が軸方向に並設された継手本体と，該継
手本体の各凹溝内にそれぞれ配設されており，該継手本
体内に挿入される接続管に外嵌し得る円環状または円筒
状で，かつ該凹溝の円錐状テーパ部に当接することによ
り接続管外周面に係止する係止部をそれぞれ有する複数
の抜け止め部材と，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 Problem) The pipe joint of the present invention has a tubular shape in which the end portion of the connecting pipe is inserted from the opening portion at one end, and the inner peripheral side portion thereof becomes the opening portion side. A plurality of concave grooves each having a conical taper portion whose diameter gradually decreases with respect to the joint main body, and each of the concave grooves of the joint main body are respectively arranged in the joint main body. Retaining means each having an annular shape or a cylindrical shape that can be externally fitted to the connection pipe inserted into the connection pipe, and each having a locking portion that locks on the outer peripheral surface of the connection pipe by abutting on the conical tapered portion of the concave groove. And a member, 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) Hereinafter, the present invention will be described with reference to Examples.
本発明の管継手は，第１図に示すように，接続管40の
端部に外嵌される筒状の継手本体10と，該継手本体10内
に配設されたシール材20と，同じく継手本体10内に配設
された一対の抜け止めリング31および32とを有する。As shown in FIG. 1, the pipe joint of the present invention includes a tubular joint body 10 that is externally fitted to an end portion of a connecting pipe 40, a sealing material 20 disposed in the joint body 10, It has a pair of retaining rings 31 and 32 arranged in the joint body 10.
本発明の管継手１における継手本体10は，一端部に，
接続管40が挿入される開口部11を有し，該開口部11の近
傍部内周面には，環状のシール材用凹溝12が設けられて
いる。該シール材用凹溝12は，開口部11側が深く，内奥
側が浅い構造となっており，該シール材用凹溝12内に
は，例えばゴム製のシール材20が嵌入されて固定されて
いる。該シール材20は，継手本体10内に挿入される接続
管40の端部外周面に密着し，該接続管40外周面と継手本
体10内周面とを液密にシールする。The joint body 10 in the pipe joint 1 of the present invention has one end
An opening 11 into which the connecting pipe 40 is inserted is provided, and an annular groove 12 for a sealing material is provided on the inner peripheral surface in the vicinity of the opening 11. The groove 12 for the sealing material has a structure in which the opening 11 side is deep and the inner rear side is shallow. For example, a rubber sealing material 20 is fitted and fixed in the groove 12 for the sealing material. There is. The sealing material 20 is in close contact with the outer peripheral surface of the end portion of the connecting pipe 40 inserted into the joint body 10 and liquid-tightly seals the outer peripheral surface of the connecting pipe 40 and the inner peripheral surface of the joint body 10.
継手本体10における該シール材用凹溝12よりも継手本
体10の軸方向内奥側に内周面には，一対の抜け止めリン
グ用凹溝13および14が設けられている。各抜け止めリン
グ用凹溝13および14内には，抜け止めリング31および32
がそれぞれ嵌入されている。A pair of retaining ring recess grooves 13 and 14 are provided on the inner peripheral surface of the joint body 10 on the inner side in the axial direction of the joint body 10 with respect to the sealing material recess groove 12. The retaining rings 31 and 32 are provided in the retaining ring concave grooves 13 and 14, respectively.
Are inserted respectively.
各抜け止めリング31および32は，例えば鋼等により一
部が切り欠かれた環状に形成されている。各抜け止めリ
ング31および32は，断面略円形状をしており，継手本体
10の開口部11側に位置する抜け止めリング31の断面の直
径が，継手本体10の軸方向奥側に位置する抜け止めリン
グ32の断面の直径よりも小さくなっている。各抜け止め
リング31および32の内径はほぼ等しく，継手本体10内に
挿入される接続管40の外径より若干小さい。従って，各
抜け止めリング31および32内に接続管40が挿入される
と，各抜け止めリング31および32が拡径して，該接続管
40外周面に密着される。Each of the retaining rings 31 and 32 is formed in an annular shape with a part cut out, for example, of steel or the like. Each retaining ring 31 and 32 has a substantially circular cross section, and
The diameter of the cross section of the retaining ring 31 located on the side of the opening 11 of 10 is smaller than the diameter of the cross section of the retaining ring 32 located on the axially inner side of the joint body 10. The inner diameters of the retaining rings 31 and 32 are substantially equal to each other, and are slightly smaller than the outer diameter of the connecting pipe 40 inserted into the joint body 10. Therefore, when the connecting pipe 40 is inserted into the retaining rings 31 and 32, the retaining rings 31 and 32 expand in diameter and
40 Closely attached to the outer peripheral surface.
該抜け止めリング31および32における継手本体10の内
奥側の内周側部分には，それぞれ階段状に切欠された係
止部31aおよび32aが全周にわたって形成されている。係
止部31aおよび32aは，例えば，接続管40外周面とは平行
な２面を有するように切欠されていて,3つの角部が形成
されている。継手本体10開口部11側の小径の抜け止めリ
ング31の係止部31aは，継手本体10の内奥側に位置する
大径の抜け止めリング32の係止部32aよりも小さい。Locking portions 31a and 32a, which are notched in a stepwise manner, are formed over the entire circumference on the inner peripheral side portions of the retaining rings 31 and 32 on the inner rear side of the joint body 10. The locking portions 31a and 32a are notched so as to have, for example, two surfaces parallel to the outer peripheral surface of the connecting pipe 40, and three corner portions are formed. The locking portion 31a of the small-diameter retaining ring 31 on the side of the opening 11 of the joint body 10 is smaller than the locking portion 32a of the large-diameter retaining ring 32 located on the inner back side of the joint body 10.
各抜け止めリング31および32が嵌入された抜け止めリ
ング用凹溝13および14は，それぞれ継手本体10の内奥側
部分に，各抜け止めリング31および32より若干大きい空
間部を有する。抜け止めリング用凹溝13および14の継手
本体10内奥側の側面13bおよび14bは，継手本体10の軸心
に対して略直交状態となっている。各抜け止めリング用
凹溝13および14は，継手本体10の開口部11側に，該開口
部11側になるに連れて徐々に縮径した円錐状テーパ部13
aおよび14aを有する。各抜け止めリング用凹溝13および
14の継手本体10内奥側側面13bおよび14bに各抜け止めリ
ング31および32が当接した状態から，各抜け止めリング
31および32が各円錐状テーパ部13aおよび14aに接触した
状態となるまでの各抜け止めリング31および32の中心間
距離ｌおよびｌ′は，継手本体10の開口部11側に位置す
る抜け止めリング用凹溝13の方が短くなっている（ｌ＜
ｌ′）。The retaining ring recess grooves 13 and 14 into which the retaining rings 31 and 32 are fitted have a space portion slightly larger than the retaining rings 31 and 32 in the inner back side of the joint body 10. Side surfaces 13b and 14b on the inner side of the joint body 10 of the retaining ring concave grooves 13 and 14 are substantially orthogonal to the axis of the joint body 10. The retaining ring recess grooves 13 and 14 are provided on the side of the opening 11 of the joint body 10 and have a conical taper portion 13 whose diameter is gradually reduced toward the opening 11 side.
a and 14a. Groove 13 for each retaining ring and
From the state where the retaining rings 31 and 32 are in contact with the inner side surfaces 13b and 14b of the joint body 10 of 14, respectively,
The distances 1 and 1 ′ between the centers of the retaining rings 31 and 32 until the 31 and 32 come into contact with the conical taper portions 13a and 14a are determined by the retaining stoppers located on the opening 11 side of the joint body 10. The ring groove 13 is shorter (l <
l ').
このように，管継手１は，継手本体10の各抜け止めリ
ング用凹溝13および14内に，抜け止めリング31および32
が嵌入され，かつシール材用凹溝12内にシール材20が嵌
入されて固定的に配設されている。そして，該継手本体
10の開口部11から接続管40が挿入されると，該接続管40
の先端部は，抜け止めリング31内に挿入される。接続管
40に挿入された抜け止めリング31は，拡径状態となって
接続管40外周面に密着される。接続管40がさらに継手本
体10内に挿入されると，抜け止めリング31は，接続管40
と一体的に平行移動し，抜け止めリング用凹溝13の継手
本体10内奥側側面13bに当接する。このような状態で，
接続管40はさらに継手本体10の内奥側へ挿入されるが，
このとき，抜け止めリング用凹溝13の該側面13bは，継
手本体10の軸心に略直交する状態となっているため，該
側面13bからは継手本体10の軸方向への力が抜け止めリ
ング31に作用し，抜け止めリング31は該側面13bに当接
した状態で停止する。In this way, the pipe joint 1 has the retaining rings 31 and 32 in the respective retaining ring concave grooves 13 and 14 of the joint body 10.
, And the sealing material 20 is fixedly disposed in the groove 12 for the sealing material. And the joint body
When the connecting pipe 40 is inserted through the opening 11 of the 10, the connecting pipe 40
The tip of the is inserted into the retaining ring 31. Connecting pipe
The retaining ring 31 inserted in 40 is in a diameter-expanded state and is brought into close contact with the outer peripheral surface of the connecting pipe 40. When the connecting pipe 40 is further inserted into the joint main body 10, the retaining ring 31 moves to the connecting pipe 40.
And the parallel movement of the retaining ring and contact the inner side surface 13b of the retaining ring concave groove 13 inside the joint body 10. In such a state,
The connecting pipe 40 is further inserted inside the joint body 10,
At this time, since the side surface 13b of the retaining ring concave groove 13 is in a state of being substantially orthogonal to the axis of the joint body 10, the force in the axial direction of the joint body 10 is prevented from coming off from the side surface 13b. The retaining ring 31 acts on the ring 31 and stops in a state of contacting the side surface 13b.
このような状態で，管継手１および接続管40内に，例
えば上水が，継手本体10の内奥部側から通流される。こ
れにより，接続管40には，継手本体10から抜けようとす
る方向に力が加わり，接続管40は，継手本体10から抜け
る方向へ移動する。この移動に伴い，継手本体10内の接
続管40に外嵌された抜け止めリング31および32は，該接
続管40と一体的に平行移動する。そして，まず，継手本
体10の開口部11側に位置する抜け止めリング31が，第２
図に示すように，抜け止めリング用凹溝13の円錐状テー
パ部13aに当接する。このとき，継手本体10内奥側の抜
け止めリング32は，抜け止めリング用凹溝14の円錐状テ
ーパ部14aには達しておらず，そのテーパ部14aに当接し
ていない。このような状態で，接続間40がさらに継手本
体10から抜ける方向へ移動すると，継手本体10の開口部
11側に位置する抜け止めリング31には，第３図に示すよ
うに，抜け止めリング用凹溝13の円錐状テーパ部13aか
らの反力が和わり，該テーパ部13aに沿った力が加わ
る。これにより，抜け止めリング31には，第３図に矢印
Ａで示す方向へのねじれ力が作用し，該抜け止めリング
31はねじられて，該抜け止めリング31の係止部31aが接
続管40外周面に係止される。このような状態でさらに接
続管40が継手本体10から抜ける方向へ移動すると，抜け
止めリング31はテーパ13aに押圧されて，その係止部31a
は，接続管40外周面に食い込む。これにより，接続管40
が継手本体10から抜けようとする方向への移動が停止さ
れる。In such a state, clean water, for example, flows into the pipe joint 1 and the connection pipe 40 from the inner back side of the joint body 10. As a result, a force is applied to the connecting pipe 40 in a direction in which the connecting pipe 40 tends to come out of the joint body 10, and the connecting pipe 40 moves in a direction in which it comes out of the joint body 10. With this movement, the retaining rings 31 and 32 fitted on the connecting pipe 40 in the joint body 10 move in parallel with the connecting pipe 40 integrally. Then, first, the retaining ring 31 located on the opening 11 side of the joint body 10 is
As shown in the figure, it comes into contact with the conical tapered portion 13a of the retaining ring concave groove 13. At this time, the retaining ring 32 on the inner side of the joint body 10 does not reach the conical taper portion 14a of the retaining ring concave groove 14 and does not contact the taper portion 14a. In this state, when the connection gap 40 moves further in the direction of coming out of the joint body 10, the opening of the joint body 10
As shown in FIG. 3, a reaction force from the conical taper portion 13a of the retaining ring concave groove 13 is added to the retaining ring 31 located on the 11 side, so that the force along the tapered portion 13a is reduced. Join. As a result, a twisting force in the direction indicated by arrow A in FIG. 3 acts on the retaining ring 31, and the retaining ring 31.
31 is twisted so that the locking portion 31a of the retaining ring 31 is locked to the outer peripheral surface of the connecting pipe 40. When the connecting pipe 40 further moves in the direction of coming out of the joint body 10 in such a state, the retaining ring 31 is pressed by the taper 13a, and its locking portion 31a.
Cut into the outer peripheral surface of the connecting pipe 40. As a result, the connecting pipe 40
Is stopped from moving in the direction of coming out of the joint body 10.
このとき，抜け止めリング31における係止部31は比較
的小さいために，接続管40外周面への係止部31aの喰い
込み量が比較的小さく，接続管40は継手本体10に比較的
小さな係止力にて係止される。内部を通流する上水の圧
力が10kg/cm2の場合には，このような状態が維持され
る。At this time, since the locking portion 31 of the retaining ring 31 is relatively small, the engagement amount of the locking portion 31a into the outer peripheral surface of the connecting pipe 40 is relatively small, and the connecting pipe 40 is relatively small in the joint body 10. It is locked by the locking force. This condition is maintained when the pressure of tap water flowing inside is 10 kg / cm 2 .
接続管40にさらに10kg/cm2以上の高水圧が加わると，
前記抜け止めリング31による接続管40の係止力が比較的
小さいため，接続管40は，継手本体10から抜ける方向へ
移動する。その移動に伴い，継手本体10内奥側の抜け止
めリング32は，接続管40と一体的に同方向へ移動する。
そして，該抜け止めリング32が，抜け止めリング用凹溝
14の円錐状テーパ部14aに当接し，さらに接続管40が継
手本体10から抜ける方向へ移動されると，該抜け止めリ
ング32には，第３図に示す場合と同様に，該テーパ部14
aからの反力が加わり，前記抜け止めリング32と同様に
ねじれ力が作用して，その係止部32aが接続管40外周面
に係止される。さらに接続管40が継手本体10から抜けよ
うとする方向へ移動すると，抜け止めリング32はテーパ
部14aに押圧されて，その係止部32aが接続管40外周面に
喰い込む。これれにより，接続管40の移動は停止され
る。When a high water pressure of 10 kg / cm 2 or more is further applied to the connecting pipe 40,
Since the locking force of the connecting pipe 40 by the retaining ring 31 is relatively small, the connecting pipe 40 moves in the direction of coming off the joint body 10. With this movement, the retaining ring 32 on the inner side of the joint body 10 moves integrally with the connecting pipe 40 in the same direction.
Then, the retaining ring 32 is a groove for retaining ring.
When the connecting pipe 40 is moved in the direction of coming out of the joint body 10 by coming into contact with the conical taper portion 14a of 14 and the tapering portion 14a is formed in the retaining ring 32 as in the case shown in FIG.
A reaction force from a is applied, and a twisting force acts similarly to the retaining ring 32, so that the locking portion 32a is locked to the outer peripheral surface of the connecting pipe 40. When the connecting pipe 40 further moves in the direction of coming out of the joint body 10, the retaining ring 32 is pressed by the tapered portion 14a, and the locking portion 32a bites into the outer peripheral surface of the connecting pipe 40. Due to this, the movement of the connecting pipe 40 is stopped.
該抜け止めリング32の係止部32aは，前記抜け止めリ
ング31の係止部31aよりも大きいために，該係止部32aの
接続管40への喰い込み量が，前記抜け止めリング31の係
止部31aの喰い込み量より大きくなる。従って，該抜け
止めリング32が接続管40に係止する力が大きく，接続管
40に高水圧が加わっても，該抜け止めリング32および前
記抜け止めリング31にて接続管40が係止されることによ
り，該接続管40は継手本体10から確実に抜け止めされ
る。Since the retaining portion 32a of the retaining ring 32 is larger than the retaining portion 31a of the retaining ring 31, the biting amount of the retaining portion 32a into the connecting pipe 40 is larger than that of the retaining ring 31. It becomes larger than the engaging amount of the locking portion 31a. Therefore, the force with which the retaining ring 32 is locked to the connecting pipe 40 is large, and
Even if a high water pressure is applied to 40, the connecting pipe 40 is locked by the retaining ring 32 and the retaining ring 31, so that the connecting pipe 40 is reliably retained from the joint body 10.
なお，継手本体10の開口部11側に設けられ，断面小径
の抜け止めリング31が嵌入される抜け止めリング用凹溝
13は，第４図に示すように，円錐状テーパ部13aからさ
らに開口部11側に一定の内径を有する平行部13cを設け
てもよい。該平行部13cは，抜け止めリング31の係止部3
1aが，接続管40外周面に喰い込んだ状態でその内部を移
動し得る大きさとなっている。このような構成とすれ
ば，接続管40外周面に係止された抜け止めリング31が接
続管40にさらに高圧に加わって，該接続管40と共に移動
する場合に，該抜け止めリング31は該凹溝13の平行部13
c内に入り込むため，該抜け止めリング31の係止部31a
が，接続管40外周面に一層喰い込むことが防止される。It should be noted that the retaining ring concave groove provided on the opening 11 side of the joint body 10 and into which the retaining ring 31 having a small cross section is fitted.
As shown in FIG. 4, 13 may have a parallel portion 13c having a constant inner diameter from the conical taper portion 13a to the opening 11 side. The parallel portion 13c is the locking portion 3 of the retaining ring 31.
The size of 1a is such that it can move inside the connection pipe 40 while being embedded in the outer peripheral surface thereof. With such a structure, when the retaining ring 31 locked to the outer peripheral surface of the connecting pipe 40 is further moved to the connecting pipe 40 by high pressure and moves together with the connecting pipe 40, the retaining ring 31 is Parallel part 13 of groove 13
Since it goes into the inside of c, the locking portion 31a of the retaining ring 31
However, it is prevented from further digging into the outer peripheral surface of the connecting pipe 40.
上記実施例では，断面小径の抜け止めリング31を継手
本体10の開口部11側に位置させ，断面大径の抜け止めリ
ング32を継手本体10の内奥部側に位置させる構成とした
が，各抜け止めリング31および32の配設位置を反対にし
て，断面大径の抜け止めリング32を継手本体10の開口部
11側に位置させてもよい。この場合は，断面大径の抜け
止めリング32は，継手本体10の開口部11に近いために，
該継手本体10の凹溝内に容易に装着し得る。In the above-described embodiment, the retaining ring 31 having a small cross-section is located on the opening 11 side of the joint body 10, and the retaining ring 32 having a large cross-section is located on the inner back side of the joint body 10. The disengagement rings 31 and 32 are arranged in opposite positions, and the disengagement ring 32 having a large cross section is inserted into the opening of the joint body 10.
It may be located on the 11th side. In this case, since the retaining ring 32 having a large cross section is close to the opening 11 of the joint body 10,
It can be easily mounted in the groove of the joint body 10.
なお，上記実施例では，断面断円形状の抜け止めリン
グを用いる構成としたが，円筒状で，内周面に係止部を
有し，外周面に継手本体の開口部側になるに連れて徐々
に縮径するテーパ面を有する抜け止め部材を用いる構成
としてもよい。In the above embodiment, the retaining ring having a circular cross section is used. However, the retaining ring is cylindrical and has an engaging portion on the inner peripheral surface, and the outer peripheral surface is closer to the opening side of the joint body. Alternatively, a retaining member having a tapered surface whose diameter gradually decreases may be used.
（発明の効果） 本発明の管継手は，このように，継手本体内に複数の
抜け止め部材が継手本体内の軸方向に並設されており，
各抜け止め部材にて接続管を抜け止めする構成となって
いるため，各抜け止め部材による接続管の係止力を軽減
することができる。従って，抜け止め部材の断面積を小
さくでき、各抜け止め部材の係止部の形状を簡潔にし得
て継手本体内への嵌入が容易となる。また各抜け止め部
材を，接続管に作用する力に応じて接続管に係止させる
ようにすれば，接続管に作用する力が脈動する場合に
も，接続管を破損させることなく，接続管を継手本体か
ら確実に抜け止めし得る。(Effects of the Invention) In the pipe joint of the present invention, as described above, the plurality of retaining members are arranged side by side in the joint body in the axial direction,
Since the connecting pipe is prevented from coming off by each retaining member, the locking force of the connecting pipe by each retaining member can be reduced. Therefore, the cross-sectional area of the retaining member can be reduced, the shape of the locking portion of each retaining member can be simplified, and fitting into the joint body becomes easy. Further, if each retaining member is locked to the connecting pipe according to the force acting on the connecting pipe, even if the force acting on the connecting pipe pulsates, the connecting pipe is not damaged. Can be securely prevented from coming off from the joint body.
第１図は本発明の管継手の一例を示す要部の一部破断側
面図，第２図はその要部拡大図，第３図はその動作説明
図，第４図は本発明の他の実施例における管継手の要部
断面図である。 １……管継手,10……継手本体,11……開口部,12……シ
ール材用凹溝,13,14……抜け止めリング用凹溝,13a,14a
……円錐状テーパ部,13b,14b……側面,20……シール材,
31,32……抜け止めリング,31a……係止部。FIG. 1 is a partially cutaway side view of a main part showing an example of the pipe joint of the present invention, FIG. 2 is an enlarged view of the main part, FIG. 3 is an explanatory view of its operation, and FIG. 4 is another view of the present invention. It is an important section sectional view of a pipe joint in an example. 1 …… Pipe joint, 10 …… Coupling body, 11 …… Opening, 12 …… Seal groove for groove, 13,14 …… Recess ring recess groove, 13a, 14a
...... Conical taper part, 13b, 14b ...... side surface, 20 ...... sealant,
31,32 …… Prevention ring, 31a …… Locking part.
Claims (1)
る筒状であって，その内周側部分には，該開口部側にな
るに連れて徐々に縮径する円錐状テーパ部を有する複数
の凹溝が軸方向に並設された継手本体と， 該継手本体の各凹溝内にそれぞれ配設されており，該継
手本体内に挿入される接続管に外嵌し得る円環状または
円筒状で，かつ該凹溝の円錐状テーパ部に当接すること
により接続管外周面に係止する係止部をそれぞれ有する
複数の抜け止め部材と， を具備する管継手。1. A conical taper having a tubular shape in which an end portion of a connecting pipe is inserted from an opening portion at one end, and an inner peripheral side portion of which has a diameter gradually decreasing toward the opening portion. A plurality of recessed grooves each having a portion arranged in parallel in the axial direction, and a recessed groove of the joint main body, respectively. A pipe joint comprising: a plurality of retaining members each having an annular shape or a cylindrical shape and each having a locking portion that locks on the outer peripheral surface of the connecting pipe by abutting on the conical tapered portion of the concave groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63072649A JP2561694B2 (en) | 1988-03-26 | 1988-03-26 | Pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63072649A JP2561694B2 (en) | 1988-03-26 | 1988-03-26 | Pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01247886A JPH01247886A (en) | 1989-10-03 |
| JP2561694B2 true JP2561694B2 (en) | 1996-12-11 |
Family
ID=13495438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63072649A Expired - Lifetime JP2561694B2 (en) | 1988-03-26 | 1988-03-26 | Pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2561694B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5328215A (en) * | 1992-09-14 | 1994-07-12 | Rovac Corporation | Pipe joint assembly |
| US5496073A (en) * | 1993-11-29 | 1996-03-05 | Rovac Corporation | Disengagement tool for use with a pipe joint assembly |
| JP5052817B2 (en) * | 2006-04-27 | 2012-10-17 | コスモ工機株式会社 | Means for preventing movement of fluid pipe |
-
1988
- 1988-03-26 JP JP63072649A patent/JP2561694B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01247886A (en) | 1989-10-03 |
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