JPH09100964A - Pipe joint with slip-off stop mechanism - Google Patents
Pipe joint with slip-off stop mechanismInfo
- Publication number
- JPH09100964A JPH09100964A JP25992695A JP25992695A JPH09100964A JP H09100964 A JPH09100964 A JP H09100964A JP 25992695 A JP25992695 A JP 25992695A JP 25992695 A JP25992695 A JP 25992695A JP H09100964 A JPH09100964 A JP H09100964A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- slip
- joint
- pipe joint
- 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.)
- Withdrawn
Links
Landscapes
- Joints With Sleeves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ポリエチレン管等
のクリーク変形を起こし易い管材を接続するのに使用さ
れる抜け止め機構付管継手に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint with a retaining mechanism used for connecting a pipe material such as a polyethylene pipe which is prone to clique deformation.
【０００２】[0002]
【従来の技術】一般に管継手にも各種のものがあるが、
例えば図８および図９に示すように継手本体１の内面に
テーパ面２が形成され、このテーパ面２に拡径および縮
径を許容する切り欠き部３を備えた抜け止め部材４が装
着され、この抜け止め部材４の位置より奥側にシール部
材５を装着するようにした管継手Ａがある。2. Description of the Related Art Generally, there are various types of pipe joints,
For example, as shown in FIGS. 8 and 9, a tapered surface 2 is formed on the inner surface of the joint body 1, and a retaining member 4 having a cutout portion 3 that allows expansion and contraction is attached to the tapered surface 2. There is a pipe joint A in which the seal member 5 is mounted on the inner side of the position of the retaining member 4.
【０００３】このような管継手Ａでは、図１０に示すよ
うに管Ｂに内圧Ｐが負荷されたとき、管Ｂが管継手Ａか
ら抜けようとしているのを、抜け止め部材４が管Ｂに食
い込むことによって防止するようにしてある。In such a pipe joint A, as shown in FIG. 10, when the internal pressure P is applied to the pipe B, the pipe B is about to come out of the pipe joint A. I try to prevent it by cutting in.
【０００４】しかしながら、上記の管継手Ａでは、管が
柔らかく、クリープ変形が起こりやすい例えばポリエチ
レン管等に内圧が負荷された時は、図１１に示すように
抜け止め部材４が縮径しようとして管Ｂに食い込み、管
Ｂが変形して時間がたてば図１２に示すように管Ｂが管
継手Ａから抜けるといった問題があった（コールドフロ
ー）。However, in the above-mentioned pipe joint A, when the internal pressure is applied to, for example, a polyethylene pipe or the like because the pipe is soft and is susceptible to creep deformation, as shown in FIG. There was a problem that the pipe B bites into the pipe B, and the pipe B is deformed and the pipe B comes out of the pipe joint A as shown in FIG. 12 with time (cold flow).
【０００５】そこで、この問題を回避するために、例え
ば図１３に示すように管Ａの内面に剛性の高い金属製の
インコアＣを装着して、管Ｂの変形を防止するといった
手段が一般にとられていた。Therefore, in order to avoid this problem, generally, for example, as shown in FIG. 13, a means of preventing deformation of the pipe B by mounting a highly rigid metal incore C on the inner surface of the pipe A is generally used. It was being done.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記の
ようなインコアＣを装着すれば、管内径が小さくなり、
流体の圧力損失が大きくなり、施工性が面倒であった
り、コストがかかるといった問題があっった。However, when the in-core C as described above is mounted, the inner diameter of the pipe becomes small,
There was a problem that the pressure loss of the fluid was large, the workability was troublesome, and the cost was high.
【０００７】本発明は上記のような点に鑑みて開発され
たものであり、その目的とするところは、上記のような
問題点を解決し、接続する管の変形を防止できて、流体
の圧力損失を大きくすることもなく、管の抜けを確実に
防止できるようにした抜け止め機構付管継手を提供する
ことにある。The present invention was developed in view of the above points, and an object of the present invention is to solve the above-mentioned problems and prevent the deformation of the connecting pipes, and An object of the present invention is to provide a pipe joint with a retaining mechanism capable of reliably preventing the pipe from coming off without increasing the pressure loss.
【０００８】[0008]
【課題を解決するための手段】そこで、本発明は上記の
ような目的を有効に達成するために、次のような構成に
してある。すなわち、継手本体の内面にテーパ面が形成
され、このテーパ面に抜け止め部材が装着され、接続す
る管とのシール部が上記抜け止め部材より奥側に形成さ
れている管継手において、上記管との抜け止め部材の当
たり面の軸方向の幅寸法が、下記の式に相当するように
した構成にしてある。Therefore, the present invention has the following configuration in order to effectively achieve the above object. That is, in a pipe joint in which a tapered surface is formed on the inner surface of the joint body, a retaining member is attached to the tapered surface, and a sealing portion with a pipe to be connected is formed on the inner side of the retaining member, The axial width dimension of the contact surface of the retaining member for and corresponds to the following formula.
【０００９】Ｘ＞Ｄ・ｓｉｎθ・ｃｏｓθ／４ Ｘ；抜け止め部材の管との当たり面の軸方向の幅寸法 Ｄ；管の外径 θ；テーパ部の内面と管軸方向の角度X> D · sin θ · cos θ / 4 X; axial width dimension of the contact surface of the retaining member against the pipe D; outer diameter of the pipe θ; angle between the inner surface of the tapered portion and the pipe axial direction
【００１０】[0010]
【発明の実施の形態】本発明の実施の形態について図１
に基づいて説明する。図に示すように管継手Ａと接続し
た管Ｂに内圧Ｐが作用したとき、管Ｂの軸方向にＷ＝Ｐ
・π／４・Ｄ2 のスラスト力が作用する。（Ｄは管Ｂの
外径）。その反力が、管Ｂの縮径方向に作用する力Ｒを
求めると、管継手Ａのテーパ面２と管軸方向の角度がθ
の角度を持っているときは、Ｒ＝Ｗ・ｓｉｎθ・ｃｏｓ
θになる。FIG. 1 shows an embodiment of the present invention.
It will be described based on. As shown in the drawing, when the internal pressure P acts on the pipe B connected to the pipe joint A, W = P in the axial direction of the pipe B.
・ A thrust force of π / 4 · D 2 acts. (D is the outer diameter of the tube B). When the reaction force determines the force R acting in the diameter reducing direction of the pipe B, the angle between the tapered surface 2 of the pipe joint A and the pipe axis direction is θ.
When the angle is R = W · sin θ · cos
becomes θ.
【００１１】そして、この縮径力を抜け止め部材４（リ
ング状部材）全体で受けるので、抜け止め部材４の幅寸
法をＸとしたとき、抜け止め部材４の管Ｂとの当たり面
の単位面積当たりの圧力は、Ｗ・ｓｉｎθ・ｃｏｓθ／
π・Ｄ・Ｘとなる。この圧力が管Ｂに作用する内圧以下
であれば、管の縮径は進行しない。Further, since this retaining force is received by the retaining member 4 (ring-shaped member) as a whole, when the width dimension of the retaining member 4 is X, the unit of the contact surface of the retaining member 4 with the pipe B. The pressure per area is W · sin θ · cos θ /
It becomes π · D · X. If this pressure is equal to or lower than the internal pressure acting on the pipe B, the diameter reduction of the pipe does not proceed.
【００１２】よって、Ｗ・ｓｉｎθ・ｃｏｓθ／π・Ｄ
・Ｘ＜内圧Ｐより、Ｘ＞Ｄ・ｓｉｎθｃｏｓθ／４を満
足する幅寸法Ｘの抜け止め部材４にすれば良い。Therefore, W · sin θ · cos θ / π · D
-From X <internal pressure P, X> D.sin θ cos θ / 4 may be used as the retaining member 4 having a width dimension X.
【００１３】[0013]
【実施例】次に本発明に係る実施例を説明する。図２及
び図３に示す実施例１は、管Ｂが呼びΦ２００のＩＳＯ
規格の管にＪＩＳ１０Ｋ２００Ａフランジで接合使用と
しているものである。Next, an embodiment according to the present invention will be described. In the first embodiment shown in FIGS. 2 and 3, the pipe B has an ISO of Φ200.
It is used to join a standard pipe with a JIS 10K200A flange.
【００１４】継手本体１は、ポリエチレン製で射出成形
で作られ、抜け止めリング４（抜け止め部材）はパリア
セタール樹脂で射出成形したものを使用している。勿
論、金属製でもなんら問題ない。シール部材５はゴム輪
を用いている。管継手Ａは呼び径Φ１００（外径１１４
ｍｍ）のもので、テーパ角度θは１０°である。The joint body 1 is made of polyethylene and is injection molded, and the retaining ring 4 (retaining member) is injection molded of polyacetal resin. Of course, there is no problem if it is made of metal. The seal member 5 uses a rubber ring. Pipe fitting A has a nominal diameter Φ100 (outer diameter 114
mm), and the taper angle θ is 10 °.
【００１５】抜け止めリング４（抜け止め部材）の幅寸
法Ｘは、１１４×ｓｉｎ１０°×ｃｏｓ１０°／４＝
４．９ｍｍ以上の８ｍｍの幅をもっている。The width dimension X of the retaining ring 4 (retaining member) is 114 × sin10 ° × cos10 ° / 4 =
It has a width of 8 mm, which is 4.9 mm or more.
【００１６】尚、図２の管継手Ａを直管Ｄに融着接合
し、片受け直管（図４参照）としても良いし、図５に示
すように管継手Ａどおしを融着してソケット継手として
もよい。The pipe joint A shown in FIG. 2 may be fusion-bonded to the straight pipe D to form a single receiving straight pipe (see FIG. 4). Alternatively, as shown in FIG. It may be used as a socket joint.
【００１７】また、図３に示す抜け止めリング４（抜け
止め部材）は、図６のような前面が円形でもよいが、管
と接触する箇所の長さＸが前記したＸ＞Ｄ・ｓｉｎθｃ
ｏｓθ／４の式で表されるＸ以上であればよい。Further, the retaining ring 4 (retaining member) shown in FIG. 3 may have a circular front surface as shown in FIG. 6, but the length X of the portion in contact with the pipe is X> D · sin θc.
It may be X or more, which is represented by the equation of osθ / 4.
【００１８】図７は、継手本体１の材質が硬質塩化ビニ
ル６を射出成形したものの外側をガラス繊維７によって
被覆し、このガラス繊維７の外側を熱硬化性樹脂８で固
めた材質の継手ａである。この継手ａは強度も強く内圧
に対する歪みも少ない。尚、抜け止めリング４（抜け止
め部材）は金属製のものであり、管と接触する箇所の長
さＸは、前記同様にＸ＞Ｄ・ｓｉｎθｃｏｓθ／４の式
で表されるＸ以上である。FIG. 7 shows a joint a made of injection-molded hard vinyl chloride 6 as the material of the joint body 1, the outside of which is covered with glass fiber 7, and the outside of this glass fiber 7 is hardened with a thermosetting resin 8. Is. This joint a has high strength and little strain with respect to internal pressure. The retaining ring 4 (retaining member) is made of metal, and the length X of the portion in contact with the pipe is X or more, which is represented by the equation X> D · sin θ cos θ / 4 as described above. .
【００１９】[0019]
【発明の効果】囲繞、上述のように本発明の抜け止め機
構付管継手では、従来のようにインコアを使用せずに、
管を変形させずに管の接続を確実なものとすることがで
きる。また、経済的、施工性が良く、管を流動する流体
の圧力損失を高めることもない。As described above, in the pipe joint with the retaining mechanism of the present invention as described above, the in-core is not used as in the conventional case,
The pipe connection can be ensured without deforming the pipe. In addition, it is economical and easy to work with, and does not increase the pressure loss of the fluid flowing through the pipe.
【図１】本発明の抜け止め機構付管継手の要部を示す説
明図である。FIG. 1 is an explanatory view showing a main part of a pipe joint with a retaining mechanism according to the present invention.
【図２】本発明の抜け止め機構付管継手の要部を示す断
面図である。FIG. 2 is a cross-sectional view showing a main part of a pipe joint with a retaining mechanism according to the present invention.
【図３】抜け止め部材４の正面図である。FIG. 3 is a front view of a retaining member 4.
【図４】本発明の抜け止め機構付管継手を使用した片受
け直管の正面図である。FIG. 4 is a front view of a single-sided straight pipe using the pipe joint with a retaining mechanism of the present invention.
【図５】本発明の抜け止め機構付管継手を加工した製品
の正面図である。FIG. 5 is a front view of a product obtained by processing the pipe joint with a retaining mechanism of the present invention.
【図６】抜け止め部材４の横断面図である。FIG. 6 is a cross-sectional view of a retaining member 4.
【図７】本発明に係る他の抜け止め機構付管継手の縦断
面図である。FIG. 7 is a vertical cross-sectional view of another pipe joint with a retaining mechanism according to the present invention.
【図８】従来の抜け止め機構付管継手の一部断面図であ
る。FIG. 8 is a partial cross-sectional view of a conventional pipe joint with a retaining mechanism.
【図９】従来の抜け止め機構付管継手と管を接続した状
態の一部断面図である。FIG. 9 is a partial cross-sectional view of a state in which a conventional pipe joint with a retaining mechanism and a pipe are connected.
【図１０】従来の抜け止め機構付管継手の作用説明図で
ある。FIG. 10 is an operation explanatory view of a conventional pipe joint with a retaining mechanism.
【図１１】管Ｂが変形した状態の従来の抜け止め機構付
管継手の作用説明図である。FIG. 11 is an operation explanatory view of the conventional pipe joint with a retaining mechanism with the pipe B deformed.
【図１２】管Ｂが抜けた状態の従来の抜け止め機構付管
継手の作用説明図である。FIG. 12 is an operation explanatory view of a conventional pipe joint with a retaining mechanism with a pipe B pulled out.
【図１３】従来の抜け止め機構付管継手の他の例を示す
説明図である。FIG. 13 is an explanatory view showing another example of a conventional pipe joint with a retaining mechanism.
１ 継手本体 ２ テーパ面 ４ 抜け止め部材 ５ シール部材 Ａ 管継手 Ｂ 管 Ｐ 内圧 θ テーパ面２と管軸方向の角度 1 joint body 2 taper surface 4 retaining member 5 seal member A pipe joint B pipe P internal pressure θ angle between taper surface 2 and pipe axial direction
Claims (1)
このテーパ面に抜け止め部材が装着され、接続する管と
のシール部が上記抜け止め部材より奥側に形成されてい
る管継手において、上記管との抜け止め部材の当たり面
の軸方向の幅寸法が、下記の式に相当するようにしたこ
とを特徴とする抜け止め機構付管継手。 Ｘ＞Ｄ・ｓｉｎθ・ｃｏｓθ／４ Ｘ；抜け止め部材の管との当たり面の軸方向の幅寸法 Ｄ；管の外径 θ；テーパ面と管軸方向の角度1. A tapered surface is formed on the inner surface of the joint body,
In a pipe joint in which a retaining member is attached to the tapered surface and a sealing portion with a pipe to be connected is formed on the inner side of the retaining member, the axial width of the contact surface of the retaining member with the pipe is in the axial direction. A pipe fitting with a retaining mechanism, the dimensions of which correspond to the following formula. X> D · sin θ · cos θ / 4 X: Width in the axial direction of the contact surface of the retaining member with the pipe D: Outer diameter of the pipe θ: Angle between the tapered surface and the pipe axial direction
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25992695A JPH09100964A (en) | 1995-10-06 | 1995-10-06 | Pipe joint with slip-off stop mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25992695A JPH09100964A (en) | 1995-10-06 | 1995-10-06 | Pipe joint with slip-off stop mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09100964A true JPH09100964A (en) | 1997-04-15 |
Family
ID=17340855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25992695A Withdrawn JPH09100964A (en) | 1995-10-06 | 1995-10-06 | Pipe joint with slip-off stop mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09100964A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009019645A (en) * | 2007-07-10 | 2009-01-29 | Jfe Pipe Fitting Mfg Co Ltd | Insertion type pipe joint |
| JP2009019644A (en) * | 2007-07-10 | 2009-01-29 | Jfe Pipe Fitting Mfg Co Ltd | Insertion type pipe joint |
-
1995
- 1995-10-06 JP JP25992695A patent/JPH09100964A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009019645A (en) * | 2007-07-10 | 2009-01-29 | Jfe Pipe Fitting Mfg Co Ltd | Insertion type pipe joint |
| JP2009019644A (en) * | 2007-07-10 | 2009-01-29 | Jfe Pipe Fitting Mfg Co Ltd | Insertion type pipe joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20050317 |
|
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