JPH0257789A - Pipe joint - Google Patents
Pipe jointInfo
- Publication number
- JPH0257789A JPH0257789A JP20402488A JP20402488A JPH0257789A JP H0257789 A JPH0257789 A JP H0257789A JP 20402488 A JP20402488 A JP 20402488A JP 20402488 A JP20402488 A JP 20402488A JP H0257789 A JPH0257789 A JP H0257789A
- Authority
- JP
- Japan
- Prior art keywords
- joint body
- slit
- pipe
- connecting pipe
- retaining member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 17
- 230000007423 decrease Effects 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract 2
- 239000003566 sealing material Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 101001020552 Rattus norvegicus LIM/homeobox protein Lhx1 Proteins 0.000 description 1
- 101700004678 SLIT3 Proteins 0.000 description 1
- 102100027339 Slit homolog 3 protein Human genes 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Joints With Sleeves (AREA)
Abstract
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。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a pipe joint used for piping such as water pipes and gas pipes.
(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。(Conventional technology) As a pipe fitting used for plumbing such as water pipes.
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、しかも、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9通常、実開昭55−80586号公報に開
示されているように、内周面にテーパ面を有する筒状の
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9周方向の一部にスリット
が形成されて分割された状態となっており、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る際に、該割りリ
ングが拡径されて該割りリング内に接続管が挿入される
。Recently, plug-in type pipe joints have been developed that can secure connecting pipes by simply inserting the pipes 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 that the inserted end of the connecting pipe cannot be easily pulled out. For this reason, in plug-in type pipe fittings, as disclosed in Japanese Utility Model Application Publication No. 55-80586, it is usually necessary to fix the connecting pipe within the cylindrical joint body having a tapered inner surface. A split ring is provided. The split ring is divided into parts with slits formed in a part of the nine circumferential directions, and the diameter can be contracted or expanded. The split ring has a slightly smaller diameter than the connecting pipe when it is not fitted onto the end of the connecting pipe, and when the connecting pipe is inserted into the fitting body, the split ring expands in diameter. A connecting tube is then inserted into the split ring.
該割りリングは接続管外周面に外嵌され、接続管が継手
本体内から抜けようとする場合には1割リリングは継手
本体内周面におけるテーパ面に当接して縮径され、接続
管に係止される。これにより、接続管は割りリングに拘
束され、継手本体から抜け止めされる。The split ring is fitted onto the outer circumferential surface of the connecting pipe, and when the connecting pipe is about to come out of the joint body, the 10-split ring comes into contact with the tapered surface on the inner peripheral surface of the joint body and its diameter is reduced, causing the connecting pipe to It is locked. As a result, the connecting pipe is restrained by the split ring and prevented from coming off from the joint body.
(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1割りリング内に挿入され
た接続管には、該割りリングからは、径方向に、全周に
わたってほぼ均一な力が加わっている。そして、接続管
に継手本体から抜ける方向へ力が加わり1割りリングが
継手本体内周面のテーパ面に当接して縮径した場合には
1例えば接続管が塩化ビニル管の場合であれば1割りリ
ングの縮径により割りリングの係止部が該塩化ビニル管
の全周にわたって喰い込む。さらに接続管に作用する継
手本体から抜ける方向への力が大きくなると、該塩化ビ
ニル管が縮径変形して該塩化ビニル外周面に該割りリン
グ内面の係止部が食い込み。(Problems to be Solved by the Invention) In such conventional pipe joints, a substantially uniform force is applied from the split ring over the entire circumference in the radial direction to the connecting pipe inserted into the split ring. There is. If a force is applied to the connecting pipe in the direction of pulling it out of the joint body, and the split ring contacts the tapered surface of the inner circumferential surface of the joint body and contracts in diameter, then 1. For example, if the connecting pipe is a vinyl chloride pipe, 1 As the diameter of the split ring is reduced, the locking portion of the split ring bites into the entire circumference of the vinyl chloride pipe. Furthermore, when the force acting on the connecting pipe in the direction of pulling it out of the joint body increases, the vinyl chloride pipe is deformed to reduce its diameter, and the locking part on the inner surface of the split ring bites into the outer circumferential surface of the vinyl chloride.
塩化ビニル管外周面に該割りリングは強固に外嵌される
。The split ring is firmly fitted onto the outer peripheral surface of the vinyl chloride pipe.
該割りリングは、継手本体のテーパ面に当接して縮径す
る場合には2周方向の一部が分割された状態であるため
、そのスリット近傍部が相互に接近するように2周方向
に引張力が作用する。このとき、スリット近傍部はその
引張力により比較的容易に縮径するが、該スリットより
離れるに連れて、該引張力の作用が弱まり、その縮径率
が小さくなる。割りリングの縮径率は、該スリットの対
向部では最小になる。従って2割りリングは周方向にお
いて、縮径率が異なった状態になる。When the split ring comes into contact with the tapered surface of the joint body and reduces its diameter, it is in a state where parts of the two circumferential directions are divided, so it is split in the two circumferential directions so that the parts near the slits approach each other. A tensile force acts. At this time, the diameter of the area near the slit is relatively easily reduced by the tensile force, but as the distance from the slit increases, the action of the tensile force weakens and the diameter reduction rate decreases. The diameter reduction rate of the split ring is minimized at the portion facing the slit. Therefore, the 2-split ring has different diameter reduction rates in the circumferential direction.
割りリング内面に設けられた鋸歯状の係止部多よ通常9
周方向全周にわたって切込み量が一定となっており、全
周にわたって一定の形状になっている。割りリングは、
前述のように、縮径率が周方向で異なっているため、該
割りリングのスリット近傍部の係止部ば、接続管の縮径
変形により接続管に強固に係止するが、スリットと対向
する部分では接続管の変形が小さいため係止力が小さく
なる。その結果、接続管のスリットと対向する部分では
接続管が割りリングから抜けようとする力が作用し2割
りリングのスリット対向部における係止部と接続管外周
面との係止がはずれるおそれがある。このような状態に
なると1割りリングには接続管に対して傾倒するように
力が働き、接続管は割りリングのスリットを広げる方向
、すなわち割りリングを拡径する方向へ力が働く。そし
て。There are usually 9 serrated locking parts on the inner surface of the split ring.
The depth of cut is constant over the entire circumference, and the shape is constant over the entire circumference. The split ring is
As mentioned above, since the diameter reduction ratio differs in the circumferential direction, the locking portion of the split ring near the slit will firmly lock onto the connecting pipe due to the diameter reduction deformation of the connecting pipe, but the Since the deformation of the connecting pipe is small in the part where the connecting pipe is connected, the locking force is small. As a result, a force that tries to pull the connecting pipe out of the split ring acts on the part of the connecting pipe that faces the slit, and there is a risk that the locking part of the split ring at the part facing the slit and the outer circumferential surface of the connecting pipe will become unlatched. be. In this state, a force is applied to the split ring so that it is tilted with respect to the connecting pipe, and a force is applied to the connecting pipe in a direction that widens the slit of the split ring, that is, a direction that increases the diameter of the split ring. and.
その力が大きくなれば、接続管は割りリングから抜けて
しまう。If the force increases, the connecting tube will come out of the split ring.
また、係止部の切込み量を大きくすれば、接続管は割り
リングから抜けることはなくなるが、その切込み量を大
きくすれば2割りリングの縮径により、スリット近傍部
における接続管への喰込み量が大きくなり、接続管が破
損してしまう。In addition, if the depth of cut of the locking part is increased, the connecting pipe will not come out from the split ring, but if the depth of cut is increased, the diameter of the split ring will be reduced and the connection pipe will be bitten in the vicinity of the slit. The amount will increase and the connecting pipe will be damaged.
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 its purpose is to provide a pipe joint that is highly effective in preventing the connecting pipe from coming off the joint body.
本発明のさらに他の目的は、接続管に継手本体から抜け
る方向に高圧が加わった場合にも該接続管を破損するこ
となく、確実に接続管を拘束し得る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 that can reliably restrain a connecting pipe without damaging the connecting pipe even when high pressure is applied to the connecting pipe in a direction in which the connecting pipe is pulled out from the joint body. .
(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のテーパ部を有
する継手本体と、該継手本体内に配設されており、該継
手本体内に挿入される接続管に外嵌し得るように周方向
の一部にてスリットが形成されて分割された環状であっ
て、その内周側部分全周に鋸歯状の係止部を有する抜け
止め部材と、を具備し、該係止部の切込み量が。(Means for Solving the Problems) The pipe joint of the present invention has a cylindrical shape in which the end of the connecting pipe is inserted through an opening at one end, and the inner circumferential side of the pipe joint has a cylindrical shape that is inserted into the opening at one end. The joint body has a conical tapered part whose diameter gradually decreases as the diameter increases, and the joint body has a circumferentially tapered part disposed within the joint body so as to be able to fit onto a connecting pipe inserted into the joint body. A retaining member has a ring shape divided into parts with a slit formed therein, and has a sawtooth-like locking portion around the entire inner circumference of the retaining member, and the cutting amount of the locking portion is adjustable. .
該スリット近傍部が小さく、該スリットより離れるに連
れて大きくなっていることを特徴としてなり、そのこと
により上記目的が達成される。It is characterized in that the area near the slit is small and becomes larger as it moves away from the slit, thereby achieving the above object.
(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図に示すように1例えば塩化ビ
ニル製の接続管40の端部に外嵌される筒状の継手本体
lOと、該継手本体IO内に配設されたシール材20と
、同じく該継手本体10内に配設された抜け止め部材3
0とを有する。As shown in FIG. 1, the pipe joint of the present invention includes a cylindrical joint body 1O that is fitted onto the end of a connecting pipe 40 made of, for example, vinyl chloride, and a seal disposed inside the joint body IO. material 20 and the retaining member 3 similarly disposed within the joint body 10.
0.
本発明の管継手における継手本体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。The joint body 10 in the pipe joint of the present invention has an opening 11 at one end into which the connecting pipe 40 is inserted, and the opening 11
An annular sealing material concave groove 12 is provided on the inner circumferential surface of the vicinity. The sealing material concave groove 12 is.
開口部11側部分が深く、内奥側部分が浅い構造となっ
ており、該シール材用凹溝12内には9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。The opening 11 side part is deep and the inner back side part is shallow, and a sealing material 20 made of, for example, rubber is fitted and fixed in the groove 12 for sealing material.
該シール材20は、継手本体lO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 sealing material 20 is in close contact with the outer circumferential surface of the end of the connecting tube 40 inserted into the joint body 1O, and liquid-tightly seals the outer circumferential surface of the connecting tube 40 and the inner circumferential 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の軸方向内奥側の内周面には、抜け止め部材用
凹溝13が設けられている。該抜け止め部材用凹溝13
内には、環状の抜け止め部材30が嵌入されている。A retaining member groove 13 is provided on the inner circumferential surface of the joint body 10 on the axially innermost side of the joint body 10 than the sealing material groove 12 . Recessed groove 13 for the retaining member
An annular retaining member 30 is fitted inside.
該抜け止め部材30は第2図に示すように1例えば径が
一定の断面円形状をした金属線材を環状に形成したもの
であり9周方向の一部が分割されるように、スリット3
1が形成されている。該抜け止め部材30は、継手本体
10内に挿入される接続管40の外径より若干小径であ
り、該抜け止め部材30内に接続管40が挿入される際
には、該抜け止め部材30は、スリット31が広がるよ
うに拡径する。そして、該抜け止め部材30内に接続管
40が挿入されると、該抜け止め部材30に働く縮径に
より、接続管40外周面に係止される。The retaining member 30 is, as shown in FIG.
1 is formed. The retaining member 30 has a slightly smaller diameter than the outer diameter of the connecting pipe 40 inserted into the joint body 10, and when the connecting pipe 40 is inserted into the retaining member 30, the retaining member 30 expands in diameter so that the slit 31 widens. When the connecting tube 40 is inserted into the retaining member 30, the connecting tube 40 is locked to the outer circumferential surface of the connecting tube 40 due to the diameter reduction acting on the retaining member 30.
該抜け止め部材30の内周側部分には、鋸歯状の係止部
32が形成されている。該係止部32は9例えば、第3
図および第4図に示すように、環状の抜け止めリング3
0の径方向に沿った第1平坦面32a。A sawtooth-shaped locking portion 32 is formed on the inner peripheral side of the retaining member 30 . The locking portion 32 has 9, for example, a third
As shown in the figure and FIG. 4, an annular retaining ring 3
A first flat surface 32a along the radial direction of 0.
該第1平坦面32aの継手本体lO内奥側に連設された
該第1平坦面32aと直交する第1内周面32b、該第
1内周面32bに直交する第2平坦面32c、および該
第2平坦面32cの継手本体10内臭側に連設された第
2内周面32dおよび抜け止めリング30の周面により
鋸歯状に形成されている。該抜け止めリング30の鋸歯
状の該係止部32における切込み量は。A first inner circumferential surface 32b orthogonal to the first flat surface 32a, which is connected to the inner back side of the joint body IO of the first flat surface 32a, a second flat surface 32c orthogonal to the first inner circumferential surface 32b, The second inner peripheral surface 32d of the second flat surface 32c connected to the inner side of the joint body 10 and the peripheral surface of the retaining ring 30 form a sawtooth shape. The amount of cut in the serrated locking portion 32 of the retaining ring 30 is as follows.
スリット31近傍部では小さ(、該スリット31から離
れるに連れて徐々に大きくなっており、該スリット31
対向部では最も大きくなっている。すなわち、第4図に
示すスリン)31対向部における第1平坦面32aの切
込み深さHlが、第3図における第1平坦面32aの切
込み深さHzよりも、大きくなっている。このような抜
け止め部材30は1例えば、金属線材を環状に成形した
後に、その金属線材を、中心位置がスリット対向部側に
若干ずらせた状態で切割加工することにより容易に製造
し得る。It is small in the vicinity of the slit 31 (but gradually becomes larger as it moves away from the slit 31;
It is largest in the opposing part. That is, the cutting depth Hl of the first flat surface 32a at the opposing portion of the sulin 31 shown in FIG. 4 is larger than the cutting depth Hz of the first flat surface 32a in FIG. Such a retaining member 30 can be easily manufactured by, for example, forming a metal wire into an annular shape and then cutting the metal wire with the center position slightly shifted toward the side facing the slit.
抜け止め部材30が嵌入された抜け止め部材用凹溝13
は、継手本体10の内奥側部分に、抜け止め部材30よ
り若干大きい空間部を有する。抜け止め部材用凹溝13
における継手本体10内奥側の側面13bは、継手本体
10の軸心に対して略直交状態となっている。抜け止め
リング用凹溝13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13aを有する。Recessed groove 13 for retaining member into which retaining member 30 is fitted
has a space slightly larger than the retaining member 30 in the innermost part of the joint body 10. Concave groove 13 for retaining member
The inner back side surface 13b of the joint body 10 is approximately orthogonal to the axis of the joint body 10. The retaining ring concave groove 13 is located on the opening 11 side of the joint body 10.
It has a conical taper portion 13a whose diameter gradually decreases toward the opening 11 side.
このような構成の管継手は、継手本体10の抜け止め部
材用凹溝13内に、環状の抜け止め部材30が嵌入され
ており、また、シール材用凹溝12内にシール材20が
嵌入されて固定されている。そして。In the pipe joint having such a configuration, an annular retaining member 30 is fitted into the retaining member groove 13 of the joint body 10, and a sealing material 20 is fitted into the sealing material concave groove 12. It has been fixed. and.
該継手本体IO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、抜け止め部材30を押
圧し、該抜け止め部材30を凹溝13の内奥側面13b
に突き当てる。このような状態でさらに接続管40が継
手本体10内に押込まれると、抜け止め部材用凹溝13
の内奥側面13bに当接した抜け止め部材30を拡径し
て、接続管40が挿入される。When the connecting tube 40 is inserted from the opening 11 of the joint body IO, the tip of the connecting tube 40 presses the retaining member 30 and pushes the retaining member 30 against the inner side surface 13b of the groove 13.
hit it against. When the connecting pipe 40 is further pushed into the joint body 10 in this state, the retaining member concave groove 13
The connecting pipe 40 is inserted by expanding the diameter of the retaining member 30 that is in contact with the inner inner side surface 13b.
このような接合状態で1例えば上水が、継手本10およ
び接続管40内に通流されると、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IOから抜ける方向へ移動する。この
移動に伴い、継手本体IO内の接続管40に外嵌された
抜け止め部材30は、該接続管40と一体的に平行移動
する。そして、抜け止め部材30の外周面が、第5図に
示すように、抜け止め部材用凹溝13の円錐状テーパ部
13aに当接する。When water, for example, is passed through the joint body 10 and the connecting pipe 40 in such a joined state, a force is applied to the connecting pipe 40 in the direction of pulling it out from the joint body 10, and the connecting pipe 40 , moves in the direction of coming out of the joint body IO. With this movement, the retaining member 30 fitted onto the connecting pipe 40 in the joint main body IO moves in parallel with the connecting pipe 40. Then, the outer peripheral surface of the retaining member 30 comes into contact with the conical tapered portion 13a of the retaining member concave groove 13, as shown in FIG.
このような状態で、接続管40がさらに継手本体10か
ら抜ける方向へ移動すると、抜け止め部材30には、第
5図に示すように、抜け止め部材用凹溝13の円錐状テ
ーパ部13aからの反力が加わり、該テーパ部13aに
沿った力が加わる。これにより。In this state, when the connecting pipe 40 further moves in the direction of coming out from the joint body 10, the retaining member 30 has a gap from the conical taper portion 13a of the retaining member concave groove 13, as shown in FIG. A reaction force is applied, and a force along the tapered portion 13a is applied. Due to this.
抜け止め部材30には第5図に矢印Aで示す方向へのね
じれ力が作用しながら9.最小径の係止部32が接続管
40外周面に食い込む。さらに、大きな引抜け力が加わ
ると、液抜け止め部材30はねじられて。9. While a torsional force is applied to the retaining member 30 in the direction indicated by arrow A in FIG. The locking portion 32 with the smallest diameter bites into the outer peripheral surface of the connecting pipe 40. Furthermore, when a large pullout force is applied, the liquid stopper member 30 is twisted.
第6図に示すようにして、液抜け止め部材30の係止部
32が接続管40外周面に食い込んで係止される。As shown in FIG. 6, the locking portion 32 of the liquid leak prevention member 30 bites into the outer peripheral surface of the connecting pipe 40 and is locked.
このとき、抜け止め部材30の鋸歯状の係止部32は、
スリット31近傍部の切込み量が小さく、スリット31
から離れるに連れて徐々に大きくなっている。その結果
、該係止部32は、スリット31から離れるに連れて、
接続管40外周面への喰い込み量が増加し、スリット3
1と対向する部分ではその喰い込み量が最大になる。こ
れに対し、抜け止め部材30は、スリット31近傍部で
は、縮径量が大きくなるため、該スリット近傍部での係
止部32の喰い込み量が比較的小さいにもかかわらず、
接続管40外周面への係止力は大きくなり、結局、抜け
止め部材30は、接続管40外周面を周方向全周にわた
ってほぼ均一な係止力にて拘束する。At this time, the serrated locking portion 32 of the retaining member 30 is
The amount of cut near the slit 31 is small, and the slit 31
It gradually gets bigger as you move away from it. As a result, as the locking portion 32 moves away from the slit 31,
The amount of biting into the outer peripheral surface of the connecting pipe 40 increases, and the slit 3
In the part facing 1, the amount of biting is maximum. On the other hand, the retaining member 30 has a large diameter reduction in the vicinity of the slit 31, so even though the amount of biting of the locking part 32 in the vicinity of the slit is relatively small,
The locking force on the outer peripheral surface of the connecting tube 40 increases, and eventually the retaining member 30 restrains the outer peripheral surface of the connecting tube 40 with a substantially uniform locking force over the entire circumference in the circumferential direction.
抜け止め部材30における鋸歯状の係止部32の切込み
量は、接続管40の材質や形状、あるいは抜け止め部材
30を構成する金属線材の径等により異なるが8例えば
、接続管40が外径216rlIm、肉厚11閣の塩化
ビニル管であり、抜け止め部材30を構成する金属線材
の外径が9園の場合には、液抜け止め部材30の係止部
32におけるスリット近傍部の第1平担面32の切り込
み深さH3は0.7M程度、スリット対向部の第1平坦
面の切込み深さH!は1.0〜1.1 an程度とされ
る。The amount of cut of the serrated locking portion 32 in the retaining member 30 varies depending on the material and shape of the connecting pipe 40, the diameter of the metal wire constituting the retaining member 30, etc.8 For example, if the connecting pipe 40 has an outer diameter 216 rlIm, a PVC pipe with a wall thickness of 11 mm, and when the outer diameter of the metal wire constituting the retaining member 30 is 9 mm, the first The cutting depth H3 of the flat surface 32 is about 0.7M, and the cutting depth H3 of the first flat surface of the part facing the slit! is approximately 1.0 to 1.1 an.
なお、上記実施例では、抜け止め部材として。In addition, in the above embodiment, it is used as a retaining member.
金属線材を環状に成形したものについて説明したが9本
発明はこのようなものに限定されるものではなく2例え
ば、抜け止め部材としては2円筒状であって、その内周
面に複数の鋸歯状の係止部が形成され、その係止部の切
込み量がスリット近傍部では小さく、スリットより離れ
るにつれて太き(なっているものであってよい。Although the description has been made regarding a metal wire formed into an annular shape, the present invention is not limited to this type of material.2 For example, the retaining member may have a cylindrical shape and have a plurality of saw teeth on its inner peripheral surface. A locking portion having a shape is formed, and the depth of cut of the locking portion is small in the vicinity of the slit and becomes thicker as the distance from the slit increases.
(発明の効果)
本発明の管継手は、このように、スリットを有する抜け
止め部材の内周側部分に形成された鋸歯状の係止部にお
ける切込み量が、スリット近傍部では小さく、スリット
より離れるた連れて大きくなっているため、縮径率の小
さいスリット対向部では、該係止部の接続管外周面への
喰い込み量が大きくなり2反対に縮径率の大きいスリッ
ト近傍部では、該係止部の接続管外周面への喰い込み量
が小さくなって、液抜け止め部材は、全周面にわたって
ほぼ均一な係止力にて接続管を拘束する。(Effects of the Invention) As described above, in the pipe joint of the present invention, the depth of cut in the serrated locking portion formed on the inner peripheral side of the retaining member having a slit is smaller in the vicinity of the slit, and is smaller than the slit. Since the diameter increases as the distance increases, the amount of biting of the locking portion into the outer circumferential surface of the connecting pipe increases in the portion facing the slit where the diameter reduction rate is small, and on the other hand, in the portion near the slit where the diameter reduction rate is large, The amount of bite of the locking portion into the outer circumferential surface of the connecting tube is reduced, and the liquid stopper member restrains the connecting tube with a substantially uniform locking force over the entire circumferential surface.
その結果2m手本体内に挿入された接続管の端部に局所
的に力が作用して該接続管を破損するおそれがない。ま
た、抜け止め部材が均一な係止力にて接続管を拘束して
いるため、接続管に対して抜け止め部材が傾倒し、接続
管が抜け止め部材がら抜けるおそれもない。As a result, there is no risk of local force acting on the end of the connecting tube inserted into the 2m hand body and damaging the connecting tube. Further, since the retaining member restrains the connecting pipe with a uniform locking force, there is no risk that the retaining member will tilt with respect to the connecting pipe and the connecting pipe will come off from the retaining member.
4 パ の な蕾゛■ 第1図は本発明の管継手の一例を示す断面図。4 Pa's buds■ FIG. 1 is a sectional view showing an example of the pipe joint of the present invention.
第2図は抜け止め部材の一例を示す正面図、第3図は第
2図の■−■線における断面図、第4図は第2図のIV
−IV線における断面図、第5図および第6図はそれぞ
れ本発明の管継手の動作説明のための要部断面図である
。Fig. 2 is a front view showing an example of the retaining member, Fig. 3 is a sectional view taken along the line ■-■ in Fig. 2, and Fig. 4 is an IV in Fig. 2.
5 and 6 are cross-sectional views of essential parts for explaining the operation of the pipe joint of the present invention, respectively.
lO・・・継手本体、 11・・・開口部、30・・・
抜け止め部材31・・・スリット、32・・・係止部、
40・・・接続管。lO...Joint body, 11...Opening, 30...
Retaining member 31...slit, 32...locking part,
40...Connecting pipe.
以上that's all
Claims (1)
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のテーパ部を有する継手本体と
、 該継手本体内に配設されており、該継手本体内に挿入さ
れる接続管に外嵌し得るように周方向の一部にてスリッ
トが形成されて分割された環状であって、その内周側部
分全周に鋸歯状の係止部を有する抜け止め部材と、を具
備し、 該係止部切込み量が、該スリット近傍部が小さく、該ス
リットより離れるに連れて大きくなっていることを特徴
とする管継手。[Claims] 1. The end of the connecting pipe has a cylindrical shape that is inserted through an opening at one end, and the inner peripheral portion thereof has a diameter that gradually decreases as it approaches the opening. A joint body having a conical tapered portion, and a slit formed in a part of the circumference so that a connecting pipe inserted into the joint body can be fitted onto the outside of the joint body. a retaining member that is divided into annular shapes and has a sawtooth-like locking portion around the entire inner circumference thereof, and the locking portion has a small cutting amount near the slit; A pipe joint characterized in that the size increases as the distance from the slit increases.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63204024A JP2561709B2 (en) | 1988-08-17 | 1988-08-17 | Pipe fitting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63204024A JP2561709B2 (en) | 1988-08-17 | 1988-08-17 | Pipe fitting |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0257789A true JPH0257789A (en) | 1990-02-27 |
JP2561709B2 JP2561709B2 (en) | 1996-12-11 |
Family
ID=16483499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63204024A Expired - Lifetime JP2561709B2 (en) | 1988-08-17 | 1988-08-17 | Pipe fitting |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2561709B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5769462A (en) * | 1993-07-08 | 1998-06-23 | Angell; Jonathan George Cordy | Releasable coupling |
-
1988
- 1988-08-17 JP JP63204024A patent/JP2561709B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5769462A (en) * | 1993-07-08 | 1998-06-23 | Angell; Jonathan George Cordy | Releasable coupling |
Also Published As
Publication number | Publication date |
---|---|
JP2561709B2 (en) | 1996-12-11 |
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