JPH1096491A - Socket structure of pipe joint - Google Patents
Socket structure of pipe jointInfo
- Publication number
- JPH1096491A JPH1096491A JP25200296A JP25200296A JPH1096491A JP H1096491 A JPH1096491 A JP H1096491A JP 25200296 A JP25200296 A JP 25200296A JP 25200296 A JP25200296 A JP 25200296A JP H1096491 A JPH1096491 A JP H1096491A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- pipe
- pipe joint
- recessed groove
- socket
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
- F16L21/04—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings in which sealing rings are compressed by axially-movable members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Sleeves (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水道管等の配管に
際して樹脂管の挿口を連結すべく使用される樹脂管継手
の受口構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a socket structure of a resin pipe joint used for connecting a resin pipe opening in piping such as a water pipe.
【０００２】[0002]
【従来の技術】従来、樹脂製の管継手の受口構造として
は、図６に示すように、抜止め部材ａをシール部材ｂの
奥部側に設ける構造のものが多いが、管継手の用途によ
っては、図５に示すように、抜止め部材ａをシール部材
ｂより開口部側に設ける構造のものもある。2. Description of the Related Art Conventionally, as a receiving structure for a resin-made pipe joint, as shown in FIG. 6, there is often a structure in which a retaining member a is provided on the back side of a seal member b. In some applications, as shown in FIG. 5, there is a structure in which the retaining member a is provided closer to the opening than the sealing member b.
【０００３】[0003]
【発明が解決しようとする課題】しかし、樹脂材料とし
てポリエチレン等の結晶性熱可塑性樹脂を使用して、図
５に示すように抜止め部材ａをシール部材ｂより開口部
側に設ける受口構造を形成して、その受口ｃ内に樹脂管
の挿口ｄを連結して配管した場合には、受口ｃの抜止め
部材ａを設けた部分に、管内圧Ｐが一方的に外側に対し
てのみ作用するので、受口ｃの部分の抜止め部材の近傍
Ｑに集中して、コールドフローが発生して径が拡大すの
と抜け易くなる危険性があった。However, using a crystalline thermoplastic resin such as polyethylene as the resin material, a receiving structure in which a retaining member a is provided closer to the opening than the sealing member b as shown in FIG. Is formed, and when the pipe d is connected to the insertion port d of the resin pipe in the receiving port c, the pipe pressure P is unilaterally outwardly applied to the portion where the retaining member a of the receiving port c is provided. Therefore, there is a danger that cold flow will occur and the diameter will increase, and it will be easy to come off, because it will act only on the receiving port c and in the vicinity Q of the retaining member.
【０００４】この点に鑑み、受口の管壁を厚肉にすると
いう方法も考えられるが、射出成形法により成形した場
合には、表面のヒケや管壁内に巣が発生し易いという成
形上の問題点があり、熱加工法により受口を後加工した
場合には、熱を充分芯まで均一にするためには長時間の
熱加熱を要するので均一な受口加工が難しいという問題
点がある。[0004] In view of this point, a method of increasing the thickness of the tube wall of the receiving port can be considered. When the port is post-processed by the thermal processing method, a long time heating is required to make the heat uniform enough to the core, so it is difficult to process the port uniformly. There is.
【０００５】本発明は、上記の如き従来の問題点を解消
し、結晶性熱可塑性樹脂を使用して抜止め部材をシール
部材の開口部側に設ける受口構造を形成した場合であっ
ても抜止め部材を設けた部分が拡径したり、樹脂管の挿
口が破損することのない管継手の受口構造を提供するこ
とを目的としてなされたものである。The present invention solves the conventional problems as described above, and is applicable to a case where a stopper structure is provided using a crystalline thermoplastic resin to provide a retaining member on the opening side of a seal member. It is an object of the present invention to provide a pipe joint receiving structure in which a portion provided with a retaining member does not expand in diameter or a resin pipe opening does not break.
【０００６】[0006]
【課題を解決するための手段】本発明は、結晶性熱可塑
性樹脂からなり、接続すべき樹脂管の挿口が挿入される
受口内に、環状シール部材が装着される第１の凹溝が周
方向に沿って設けられ、その第１の凹溝よりも受口開口
部側に、環状抜止め部材が装着される第２の凹溝が周方
向に沿って設けられている管継手の受口構造であって、
前記受口を形成する樹脂壁の少なくとも第２の凹溝の設
けられた部分に、補強部材が配設されている管継手の受
口構造である。SUMMARY OF THE INVENTION According to the present invention, there is provided a first groove formed of a crystalline thermoplastic resin, into which a ring-shaped sealing member is mounted, in a socket into which an opening of a resin tube to be connected is inserted. A receiving part of a pipe joint, which is provided along the circumferential direction, and has a second concave groove along the circumferential direction, on which the annular retaining member is mounted, closer to the opening than the first concave groove. Mouth structure,
A pipe joint receiving structure in which a reinforcing member is disposed at least in a portion of the resin wall forming the receiving port where the second concave groove is provided.
【０００７】本発明において、樹脂管継手を形成する結
晶性熱可塑性樹脂としては、例えば、中密度ポリエチレ
ン、高密度ポリエチレン、ポリプロピレン等が代表的な
ものとして挙げらる。In the present invention, typical examples of the crystalline thermoplastic resin forming the resin pipe joint include medium density polyethylene, high density polyethylene, and polypropylene.
【０００８】補強部材の材質としては、例えば、鋼板、
鋳鉄、ステンレス板、アルミニウム板、アルミニウム鋳
物等の金属製のものの他、ガラス繊維、カーボン繊維等
の各種無機、有機ウィスカーを補強材として用いた繊維
強化樹脂（ＦＲＰ）等が挙げられる。As the material of the reinforcing member, for example, a steel plate,
In addition to metal materials such as cast iron, stainless steel plates, aluminum plates, and aluminum castings, fiber reinforced resins (FRP) using various inorganic or organic whiskers such as glass fiber and carbon fiber as a reinforcing material, and the like.
【０００９】補強部材の大きさは、少なくとも環状抜止
め部材が装着される第２の凹溝の受口開口部側の端部か
ら環状抜止め部材の幅に等しい幅を有することが好まし
いが、図４に示すように、環状抜止め部材１４の斜め上
方向にもコールドフローが発生するので、上記の環状抜
止め部材の幅以上の幅を有するのが更に好ましい。The size of the reinforcing member is preferably at least equal to the width of the annular retaining member from the end of the second groove in which the annular retaining member is mounted on the receiving opening side. As shown in FIG. 4, since a cold flow also occurs in the obliquely upward direction of the annular retaining member 14, it is more preferable that the annular retaining member 14 has a width equal to or greater than the width of the annular retaining member.
【００１０】[0010]
【作用】本発明の管継手の受口構造は、受口を形成する
樹脂壁の少なくとも第２の凹溝の設けられた部分に、補
強部材が配設されていることにより、結晶性熱可塑性樹
脂を使用して抜止め部材をシール部材の開口部側に設け
る受口構造を形成した場合であっても、第２の凹溝の設
けられたた部分に、管内圧が一方的に外側に対してのみ
作用しても、その部分が配設された補強部材によって補
強されているのでコールドフローを引き起こすことがな
く、拡径状態となることがない。In the pipe joint receiving structure of the present invention, the reinforcing member is provided on at least the portion of the resin wall forming the receiving port where the second concave groove is provided. Even in the case where the receiving structure in which the retaining member is provided on the opening side of the seal member using resin is formed, the internal pressure of the pipe is unilaterally outward in the portion where the second concave groove is provided. Even if it acts only on the surface, since that part is reinforced by the reinforcing member provided, no cold flow is caused, and the diameter is not increased.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施の形態を説明
する。図１は、本発明の管継手の受口構造の一例を示す
一部断面図である。管継手１は、高密度ポリエチレン等
の結晶性熱可塑性樹脂からなり、接続すべき樹脂管２の
挿口２１が挿着される円筒状の受口１１を有している。Embodiments of the present invention will be described below. FIG. 1 is a partial cross-sectional view illustrating an example of a socket structure of a pipe joint according to the present invention. The pipe joint 1 is made of a crystalline thermoplastic resin such as high-density polyethylene, and has a cylindrical reception port 11 into which the insertion port 21 of the resin pipe 2 to be connected is inserted.
【００１２】受口１１は、一端に樹脂管２の挿口２１が
挿入される開口部１１１を有し、奥部側には、環状シー
ル部材が装着される第１の凹溝１１２が周方向に沿って
設けられており、第１の凹溝１１２よりも受口開口部側
に、環状抜止め部材が装着される第２の凹溝１１３が周
方向に沿って設けられている。The receiving opening 11 has an opening 111 at one end into which the insertion opening 21 of the resin tube 2 is inserted, and a first concave groove 112 to which an annular sealing member is attached is provided at the back side in the circumferential direction. A second groove 113 to which the annular retaining member is attached is provided along the circumferential direction on the opening side of the receiving port with respect to the first groove 112.
【００１３】受口１１の第２の凹溝１１３が設けられた
部分の樹脂壁の外周面には、リング状の補強部材１２が
被覆されている。尚、この補強部材１２は、図中点線に
て示すように、第１の凹溝１１２の設けられた部分の樹
脂壁の外周囲をも被覆するようにされていてもよい。A ring-shaped reinforcing member 12 is coated on the outer peripheral surface of the resin wall at the portion of the receiving port 11 where the second concave groove 113 is provided. The reinforcing member 12 may also cover the outer periphery of the resin wall at the portion where the first concave groove 112 is provided, as shown by a dotted line in the drawing.
【００１４】第１の凹溝１１２内には、ゴムからなる環
状シール部材１３が装着され、第２の凹溝１１３内に
は、環状抜止め部材１４が装着されている。環状抜止め
部材１４は、１つ割りの略円環状をなし、合成樹脂から
なる管抜止め部材本体の内周面に、樹脂管の挿口の外周
面に係止される複数の掛止刃が設けたもの（特に図示せ
ず）等が好適に使用される。An annular seal member 13 made of rubber is mounted in the first groove 112, and an annular stopper member 14 is mounted in the second groove 113. The annular stopper member 14 has a substantially annular shape, and is formed of a plurality of retaining blades that are engaged with the inner peripheral surface of the tube retaining member body made of synthetic resin and the outer peripheral surface of the insertion opening of the resin tube. (Not particularly shown), etc. are preferably used.
【００１５】図２は、本発明の管継手の受口構造の別の
例を示す一部断面図である。この例の場合には、受口１
１の第２の凹溝１１３が設けられた部分の樹脂壁中に、
リング状の補強部材１２′が埋設されている。尚、この
補強部材１２′は、図中点線にて示すような、第１の凹
溝１１２の設けられた部分の樹脂壁中に延長するように
埋設されていてもよい。その他の構成については、上記
図１を参照して説明した場合と同じであるので、詳細な
説明は省略する（以下、同様）。FIG. 2 is a partial sectional view showing another example of the socket structure of the pipe joint of the present invention. In this example, port 1
In the resin wall of the portion where the first second groove 113 is provided,
A ring-shaped reinforcing member 12 'is embedded. The reinforcing member 12 'may be buried so as to extend into the resin wall of the portion where the first concave groove 112 is provided, as shown by a dotted line in the figure. Other configurations are the same as those described with reference to FIG. 1, and thus detailed description will be omitted (the same applies hereinafter).
【００１６】図３は、本発明の管継手の受口構造の更に
別の例を示す一部断面図である。この例の場合には、受
口１１の第２の凹溝１１３が設けられた部分の樹脂壁の
内周面に、第２の凹溝１１３の内面形状に対応する外面
形状を有する補強部材１２′′が被覆されている。FIG. 3 is a partial sectional view showing still another example of the socket structure of the pipe joint of the present invention. In the case of this example, the reinforcing member 12 having an outer surface shape corresponding to the inner surface shape of the second concave groove 113 is provided on the inner peripheral surface of the resin wall at the portion where the second concave groove 113 of the receiving port 11 is provided. '' Is coated.
【００１７】[0017]
【発明の効果】本発明の管継手の受口構造は、上記の如
くされているので、結晶性熱可塑性樹脂を使用した場合
であっても、環状抜止め部材が装着される第２の凹溝が
設けられた部分の管壁にコールドフローが発生すること
がなく、抜止め部材を設けた部分が拡径したり、樹脂管
の挿口が破損することがない。Since the socket structure of the pipe joint of the present invention is constructed as described above, even if a crystalline thermoplastic resin is used, the second concave portion to which the annular retaining member is attached is provided. Cold flow does not occur on the pipe wall at the portion where the groove is provided, and the diameter of the portion provided with the retaining member does not increase, and the insertion opening of the resin pipe does not break.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の管継手の受口構造の一例を示す一部断
面図である。FIG. 1 is a partial sectional view showing an example of a socket structure of a pipe joint according to the present invention.
【図２】本発明の管継手の受口構造の別の例を示す一部
断面図である。FIG. 2 is a partial cross-sectional view showing another example of the socket structure of the pipe joint of the present invention.
【図３】本発明の管継手の受口構造の更に別の例を示す
一部断面図である。FIG. 3 is a partial sectional view showing still another example of the socket structure of the pipe joint of the present invention.
【図４】本発明の管継手の受口構造における補強部材の
寸法を説明する一部断面図である。FIG. 4 is a partial cross-sectional view illustrating dimensions of a reinforcing member in the socket structure of the pipe joint of the present invention.
【図５】従来の管継手の一例を説明する一部断面図であ
る。FIG. 5 is a partial cross-sectional view illustrating an example of a conventional pipe joint.
【図６】従来の管継手の別の例を説明する一部断面図で
ある。FIG. 6 is a partial cross-sectional view illustrating another example of a conventional pipe joint.
１ 管継手 ２ 接続管 １１ 受口 ２１ 挿口 １３ 環状シール部材 １４ 環状抜止め部材 １２，１２′，１２′′ 補強部材 １１１ 開口部 １１２ 第１の凹溝 １１３ 第２の凹溝 DESCRIPTION OF SYMBOLS 1 Pipe joint 2 Connection pipe 11 Reception port 21 Insertion port 13 Annular sealing member 14 Annular retaining member 12, 12 ', 12' 'Reinforcement member 111 Opening 112 First concave groove 113 Second concave groove
Claims (1)
き樹脂管の挿口が挿入される受口内に、環状シール部材
が装着される第１の凹溝が周方向に沿って設けられ、そ
の第１の凹溝よりも受口開口部側に、環状抜止め部材が
装着される第２の凹溝が周方向に沿って設けられている
管継手の受口構造であって、前記受口を形成する樹脂壁
の少なくとも第２の凹溝の設けられた部分に、補強部材
が配設されていることを特徴とする管継手の受口構造。1. A first groove formed with a crystalline thermoplastic resin, in which a ring-shaped sealing member is mounted is provided along a circumferential direction in a socket into which an insertion opening of a resin pipe to be connected is inserted, A receiving structure for a pipe joint, wherein a second concave groove to which an annular retaining member is attached is provided along a circumferential direction on a receiving opening opening side of the first concave groove. A pipe joint receiving structure, wherein a reinforcing member is provided in at least a portion of the resin wall forming the mouth where the second groove is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25200296A JPH1096491A (en) | 1996-09-24 | 1996-09-24 | Socket structure of pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25200296A JPH1096491A (en) | 1996-09-24 | 1996-09-24 | Socket structure of pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1096491A true JPH1096491A (en) | 1998-04-14 |
Family
ID=17231202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25200296A Pending JPH1096491A (en) | 1996-09-24 | 1996-09-24 | Socket structure of pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1096491A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008051342A (en) * | 2007-10-29 | 2008-03-06 | Smc Corp | Pipe coupling |
| JP2008164090A (en) * | 2006-12-28 | 2008-07-17 | Taifurekkusu Kk | Joint for resin pipe |
| KR101023868B1 (en) | 2008-03-07 | 2011-03-22 | 도아 플렉스 가부시키가이샤 | Resin pipe joint |
| JP2017198267A (en) * | 2016-04-26 | 2017-11-02 | Ｊｆｅ継手株式会社 | Pipe joint |
| JP2022154030A (en) * | 2021-03-30 | 2022-10-13 | タキロンシーアイシビル株式会社 | Liquid transport pipe and manufacturing method for liquid transport pipe |
-
1996
- 1996-09-24 JP JP25200296A patent/JPH1096491A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008164090A (en) * | 2006-12-28 | 2008-07-17 | Taifurekkusu Kk | Joint for resin pipe |
| JP2008051342A (en) * | 2007-10-29 | 2008-03-06 | Smc Corp | Pipe coupling |
| KR101023868B1 (en) | 2008-03-07 | 2011-03-22 | 도아 플렉스 가부시키가이샤 | Resin pipe joint |
| JP2017198267A (en) * | 2016-04-26 | 2017-11-02 | Ｊｆｅ継手株式会社 | Pipe joint |
| JP2022154030A (en) * | 2021-03-30 | 2022-10-13 | タキロンシーアイシビル株式会社 | Liquid transport pipe and manufacturing method for liquid transport pipe |
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