JPH11270763A - Anti-release pipe joint - Google Patents

Anti-release pipe joint

Info

Publication number
JPH11270763A
JPH11270763A JP6916398A JP6916398A JPH11270763A JP H11270763 A JPH11270763 A JP H11270763A JP 6916398 A JP6916398 A JP 6916398A JP 6916398 A JP6916398 A JP 6916398A JP H11270763 A JPH11270763 A JP H11270763A
Authority
JP
Japan
Prior art keywords
lock ring
stopper
insertion port
peripheral surface
port
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
Application number
JP6916398A
Other languages
Japanese (ja)
Inventor
Masayuki Sakaguchi
眞幸 坂口
Atsushi Maki
厚 槇
Yorinobu Akaishi
▲頼▼信 赤石
Yoshiki Yamada
良樹 山田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP6916398A priority Critical patent/JPH11270763A/en
Publication of JPH11270763A publication Critical patent/JPH11270763A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide an anti-release pipe joint having an earthquake-resisting function. SOLUTION: An anti-release pipe joint comprises a pipe body 1 having at its one end a socket 1a that is provided on its inner surface with an elastic annular sealing member 5 and a locking ring 7, and another pipe body 2 having at its one end a spigot 2a that is formed on its tip periphery with a stopper 8. When the socket 1a and the spigot 2a are fitted together, the free end 5a of the elastic sealing member 5 is placed in close contact with the periphery of the spigot 2a as well as the locking ring 7 and the stopper 8 are engaged with each other. Both pipe bodies 1 and 2 are made of a synthetic resin material and the locking ring 7 has a thin-walled part 7a near its root, so that tensile force of or over a preset value acting between the socket 1a and the spigot 2a presses the stopper 8 against the locking ring 7 until the thin-walled part 7a ruptures to allow the extension of the spigot 2a.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、耐震機能を備えた
離脱防止管継手に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint having a seismic function.

【0002】[0002]

【従来の技術】図8及び図9に示すように、管路Aを構
成する管体A1,A2間に伸縮継手Bを介在させして耐
震性を付与する場合には、伸縮継手Bの接続が解除され
ないようにするため、管路Aの適所をアンカーCで固定
する必要があり、これでは、工期が長期化すると共に、
工事費が高くつく。
2. Description of the Related Art As shown in FIGS. 8 and 9, when an expansion joint B is interposed between pipes A1 and A2 constituting a conduit A to provide earthquake resistance, the connection of the expansion joint B is required. In order not to be released, it is necessary to fix the right place of the pipeline A with the anchor C. In this case, the construction period becomes longer,
Construction costs are high.

【0003】そこで、前記管体A1,A2を合成樹脂材
により形成すると共に、その管体A1,A2を離脱防止
管継手により接続し、地震時の地盤変動に対しては管体
A1,A2の伸びで対応することによって、アンカーC
を省略することが考えられる。
Therefore, the pipes A1 and A2 are formed of a synthetic resin material, and the pipes A1 and A2 are connected by a joint for preventing the pipes A1 and A2 from coming off. By responding with elongation, anchor C
May be omitted.

【0004】[0004]

【発明が解決しようとする課題】上記構成では、地震時
の地盤変動による引張力が過大な場合に、管体A1,A
2の伸びだけでは対応することができず、その管体A
1,A2が破断されたり、離脱防止管継手が損傷された
りする虞れがある。
In the above configuration, when the tensile force due to the ground deformation during the earthquake is excessive, the pipes A1, A
It is not possible to cope with only the elongation of 2
1 and A2 may be broken, or the detachment prevention pipe joint may be damaged.

【0005】本発明は、上記問題点に鑑み、耐震機能を
備えた離脱防止管継手を提供することを目的としてい
る。
[0005] In view of the above problems, an object of the present invention is to provide a separation preventing pipe joint having an earthquake-resistant function.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するた
め、請求項1記載の発明は、一方の管体の端部に設けた
受口の内周面に環状弾性シール材とロックリングとが設
けられると共に、他方の管体の端部に設けた挿口の外周
面先端にストッパーが設けられ、前記受口と挿口とを嵌
合させることにより、前記弾性シール材の先端部が挿口
の外周面に密着されると共に、前記ロックリングとスト
ッパーとが互いに係合されるようにした離脱防止管継手
において、前記両管体が合成樹脂材により形成され、前
記ロックリングまたは前記ストッパーの根元付近に薄肉
部が形成されており、前記受口と挿口との間に所定以上
の引張力が作用して前記ストッパーが前記ロックリング
に押し付けられることにより、前記薄肉部が破断されて
前記挿口が伸長移動されるように構成したことを特徴と
している。
In order to achieve the above object, according to the first aspect of the present invention, an annular elastic sealing material and a lock ring are provided on an inner peripheral surface of a receiving port provided at an end of one of the tubular bodies. A stopper is provided at the end of the outer peripheral surface of the insertion port provided at the end of the other pipe body, and the front end of the elastic sealing material is inserted by fitting the reception port and the insertion port. In a detachment prevention pipe joint in which the lock ring and the stopper are engaged with each other while being in close contact with the outer peripheral surface of the lock ring or the stopper, a root of the lock ring or the stopper is formed. A thin portion is formed in the vicinity, and a predetermined or more tensile force acts between the receiving port and the insertion port so that the stopper is pressed against the lock ring, whereby the thin portion is broken and the insertion is performed. Mouth extends It is characterized by being configured as.

【0007】上記構成によれば、通常使用時の水圧や温
度変化の影響による引張力が両管体にかかっても、挿口
のストッパーが受口のロックリングに係合しているの
で、その両管体の連結状態が維持される。また、地震時
の地盤変動による過大な引張力が両管体にかかってスト
ッパーがロックリングに押し付けられると、ロックリン
グまたはストッパーの根元付近に形成した薄肉部がが破
断され、挿口が伸長移動されるから、過大な引張力が前
記両管体にかからない。
According to the above construction, even if a tensile force is exerted on both pipes due to the influence of water pressure and temperature change during normal use, the stopper of the insertion hole is engaged with the lock ring of the receiving hole. The connected state of both tubes is maintained. In addition, if excessive tension is applied to both pipes due to ground deformation during the earthquake and the stopper is pressed against the lock ring, the thin part formed near the base of the lock ring or the stopper is broken, and the insertion port extends. Therefore, no excessive tensile force is applied to the two pipes.

【0008】この場合、受口と挿口との嵌合状態を維持
する離脱防止機能を備えているから、アンカーが不要で
あり、工期を大幅に短縮することができると共に、工事
費を安くすることができる。また、地震時の地盤変動に
よる過大な引張力が受口と挿口との間にかかったときに
は、受口または挿口に設けた薄肉部が破断されて、挿口
を伸長移動させるから、過大な引張力を吸収することが
でき、耐震機能も備えている。
In this case, since there is provided a detachment preventing function for maintaining the fitting state between the receiving port and the insertion port, no anchor is required, the construction period can be greatly reduced, and the construction cost can be reduced. be able to. Also, if excessive tensile force due to ground deformation during an earthquake is applied between the receiving port and the insertion port, the thin portion provided at the receiving port or the insertion port will be broken, and the insertion port will be extended and moved. It is capable of absorbing a high tensile force and has an earthquake-resistant function.

【0009】請求項2記載の発明は、一方の管体の端部
に設けた受口の内周面に環状弾性シール材とロックリン
グとが設けられると共に、他方の管体の端部に設けた挿
口の外周面先端にストッパーが設けられ、前記受口と挿
口とを嵌合させることにより、前記弾性シール材の先端
部が挿口の外周面に密着されると共に、前記ロックリン
グとストッパーとが互いに係合されるようにした離脱防
止管継手において、前記両管体が合成樹脂材により形成
され、前記ロックリングの内周面が挿口の外周面に係止
され、前記挿口の内周面に嵌合させたインナーコアの前
記ロックリングに対応する部分に切欠き部が形成されて
おり、前記受口と挿口との間に所定以上の引張力が作用
して該挿口の前記ロックリングに対応する部分が弾性変
形されることにより、その挿口とロックリングとの係止
状態が解除されて挿口が伸長移動されるように構成した
ことを特徴としている。
According to a second aspect of the present invention, an annular elastic sealing material and a lock ring are provided on an inner peripheral surface of a receiving port provided at one end of one tube, and provided at an end of the other tube. A stopper is provided at the end of the outer peripheral surface of the insertion port, and by fitting the receiving port and the insertion port, the distal end of the elastic sealing material is in close contact with the outer peripheral surface of the insertion port, and the lock ring and In a disengagement-preventive pipe joint in which a stopper and a stopper are engaged with each other, the two pipes are formed of a synthetic resin material, an inner peripheral surface of the lock ring is locked to an outer peripheral surface of the insertion port, and the insertion port is A notch is formed in a portion corresponding to the lock ring of the inner core fitted on the inner peripheral surface of the inner core, and a predetermined or more tensile force acts between the receiving port and the insertion port to insert the notch. The portion of the mouth corresponding to the lock ring is elastically deformed. It is characterized in that the spigot and the locked state is released and the lock ring spigot is configured to be extended moved.

【0010】上記構成によれば、通常使用時の水圧や温
度変化の影響による引張力が両管体にかかっても、受口
に設けたロックリングの内周面が挿口の外周面に係止さ
れているので、その両管体の連結状態が維持される。ま
た、地震時の地盤変動による過大な引張力が受口と挿口
との間にかかると、挿口のロックリングに対応する部分
が弾性変形されることにより、その挿口とロックリング
との係止状態が解除されて挿口が所定間隔だけ伸長移動
されるから、過大な引張力が前記両管体にかからない。
According to the above construction, even when a tensile force is exerted on both pipes due to a change in water pressure or temperature during normal use, the inner peripheral surface of the lock ring provided on the receiving port is engaged with the outer peripheral surface of the insertion port. Since the two tubes are stopped, the connected state of the two tubes is maintained. Also, if an excessive tensile force due to ground deformation during an earthquake is applied between the receiving port and the insertion port, the portion corresponding to the lock ring of the insertion port is elastically deformed, so that the connection between the insertion port and the locking ring may occur. Since the locked state is released and the insertion opening is extended and moved by a predetermined interval, an excessive tensile force is not applied to the two pipes.

【0011】この場合、請求項1記載の発明と同様に、
離脱防止機能を備えているから、アンカーが不要であ
り、工期を大幅に短縮することができると共に、工事費
を安くすることができる。また、地震時の地盤変動によ
る過大な引張力が受口と挿口との間にかかったときに
は、挿口とロックリングとの係止状態が解除されて、挿
口を伸長移動させるから、過大な引張力を吸収すること
ができ、耐震機能も備えている。
In this case, similar to the first aspect of the present invention,
Since a detachment prevention function is provided, no anchor is required, the construction period can be significantly reduced, and the construction cost can be reduced. Also, if excessive tensile force due to ground deformation during an earthquake is applied between the receiving port and the insertion port, the locking state between the insertion port and the lock ring is released, and the insertion port is extended and moved. It is capable of absorbing a high tensile force and has an earthquake-resistant function.

【0012】[0012]

【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。図1及び図2は本発明の第1の実
施の形態である離脱防止管継手を示すものであって、ポ
リオレフィンなどの合成樹脂材からなる一方の管体1の
端部に接合した受口1aの内周面に開口部側環状溝3と
奥部側環状溝4とが形成され、開口部側環状溝3にゴム
製環状弾性シール材5が嵌合されると共に、奥部側環状
溝4の内周面中央部に該奥部側環状溝4の開口部側端面
4aから所定間隔をおいてロックリング7が一体突設さ
れ、該ロックリング7の根元部に略V字状溝20を形成
することにより薄肉部7aが形成されている。また、ポ
リオレフィンなどの合成樹脂材からなる他方の管体2の
端部に接合した挿口2aの外周面先端にストッパー8が
一体突設されている。なお、11は挿口2aの内周面に
嵌合された補強用金属製インナーコアである。
Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a detachment prevention pipe joint according to a first embodiment of the present invention, and a receiving port 1a joined to an end of one pipe 1 made of a synthetic resin material such as polyolefin. An opening-side annular groove 3 and a back-side annular groove 4 are formed on the inner peripheral surface of the inner ring. A rubber annular elastic sealing material 5 is fitted into the opening-side annular groove 3 and the inner-side annular groove 4 is formed. A lock ring 7 is integrally formed at a central portion of the inner peripheral surface at a predetermined distance from the opening side end surface 4a of the inner annular groove 4, and a substantially V-shaped groove 20 is formed at the root of the lock ring 7. The thin part 7a is formed by forming. Further, a stopper 8 is integrally provided at the end of the outer peripheral surface of the insertion opening 2a joined to the end of the other tubular body 2 made of a synthetic resin material such as polyolefin. Reference numeral 11 denotes a metal inner core for reinforcement fitted on the inner peripheral surface of the insertion opening 2a.

【0013】離脱防止管継手を組み立てる場合には、図
3(a)に示すように、開口部側環状溝3に弾性シール
材5を嵌合させた受口1aと挿口2aとをその基端部ど
うしが対向するように同心状に配置した後、同図(b)
の実線に示すように、受口1aと挿口2aとを嵌合させ
て、ロックリング7とストッパー8とを係合させると共
に、弾性シール材5の先端部5aを挿口2aの外周面に
密着させ、続いて、同図(b)の仮想線に示すように、
受口1aの基端部に一方の管体1を接合し、挿口2aの
基端部に他方の管体2を接合すればよい。
In order to assemble the detachable pipe joint, as shown in FIG. 3 (a), the receiving port 1a in which the elastic sealing material 5 is fitted in the opening side annular groove 3 and the insertion port 2a are formed on the basis thereof. After being arranged concentrically so that the ends face each other, FIG.
As shown by the solid line, the receiving port 1a and the insertion port 2a are fitted to each other, so that the lock ring 7 and the stopper 8 are engaged with each other, and the distal end portion 5a of the elastic sealing material 5 is attached to the outer peripheral surface of the insertion port 2a. Then, as shown by the imaginary line in FIG.
One tube 1 may be joined to the base end of the receptacle 1a, and the other tube 2 may be joined to the base end of the insertion opening 2a.

【0014】上記構成によれば、図1に実線で示すよう
に、通常使用時の水圧や温度変化の影響による引張力が
両管体1,2にかかっても、挿口2aのストッパー8が
受口1aのロックリング7に係合しているので、その両
管体1,2の連結状態が維持される。また、地震時の地
盤変動による過大な引張力が両管体1,2にかかってス
トッパー8がロックリング7に押し付けられると、薄肉
部7aが破断され、図1に仮想線で示すように、ストッ
パー8が破断されたロックリング7を介して端面4aに
当たるまで挿口2aが伸長移動されるから、過大な引張
力が両管体1,2にかからない。
According to the above configuration, as shown by a solid line in FIG. 1, even when a tensile force is exerted on both the pipes 1 and 2 due to the influence of water pressure and temperature change during normal use, the stopper 8 of the insertion opening 2a can be used. Since the two pipes 1 and 2 are engaged with the lock ring 7 of the receiving port 1a, the connected state is maintained. Further, when an excessive tensile force due to the ground deformation at the time of the earthquake is applied to both the pipes 1 and 2 and the stopper 8 is pressed against the lock ring 7, the thin portion 7a is broken, and as shown by an imaginary line in FIG. Since the insertion opening 2a is extended and moved until the stopper 8 comes into contact with the end face 4a via the broken lock ring 7, an excessive tensile force is not applied to both the tubular bodies 1 and 2.

【0015】この場合、受口1aと挿口2aとの嵌合状
態を維持する離脱防止機能を備えているから、アンカー
C(図8及び図9参照)が不要であり、工期を大幅に短
縮することができると共に、工事費を安くすることがで
きる。また、地震時の地盤変動による過大な引張力が受
口1aと挿口2aとの間にかかったときには、薄肉部7
aを破断して、挿口2aを伸長移動させるから、過大な
引張力を吸収することができ、耐震機能も備えている。
In this case, since a detachment preventing function for maintaining the fitting state of the receiving port 1a and the insertion port 2a is provided, the anchor C (see FIGS. 8 and 9) is unnecessary, and the construction period is greatly reduced. Construction costs can be reduced. Further, when an excessive tensile force due to the ground fluctuation at the time of the earthquake is applied between the receiving port 1a and the insertion port 2a, the thin portion 7
Since a is broken and the insertion opening 2a is extended and moved, an excessive tensile force can be absorbed, and a seismic function is also provided.

【0016】図4及び図5は本発明の第2の実施の形態
である離脱防止管継手を示すものであって、受口1aが
一方の管体1の端部に一体形成されると共に、挿口2a
が他方の管体2の端部に一体形成され、ロックリング7
に周方向に沿って所定間隔をおいて多数の凹部21が形
成されると共に、ストッパー8に各凹部21を通過可能
な凸部22が周方向に沿って所定間隔をおいて多数設け
られている。上記以外の構成及び作用効果は図1及び図
2に記載の第1の実施の形態とほぼ同じであるから、同
一部分に同一符号を付してその説明を省略する。
FIG. 4 and FIG. 5 show a second embodiment of the present invention, in which a receiving joint 1a is integrally formed at one end of one tubular body 1. Insert 2a
Are formed integrally with the end of the other tubular body 2, and the lock ring 7
A large number of concave portions 21 are formed at predetermined intervals along the circumferential direction, and a large number of convex portions 22 that can pass through each concave portion 21 are provided in the stopper 8 at predetermined intervals along the circumferential direction. . Since the configuration, operation and effect other than the above are substantially the same as those of the first embodiment shown in FIGS. 1 and 2, the same portions are denoted by the same reference numerals and description thereof will be omitted.

【0017】上記構成において、離脱防止管継手を組み
立てる場合には、図5(a)に示すように、開口部側環
状溝3に弾性シール材5を嵌合させた受口1aと挿口2
aとをその先端部どうしを対向させて同心状に配置した
後、同図(b)に示すように、挿口2aを受口1aに挿
入し、各凸部22が各凹部21を通過してロックリング
7より奥部まで差し込まれた状態で、挿口2aを所定角
度αだけ回転させて、各凸部22を各凹部21間の切り
残し部に対向させればよい。これによって、ストッパー
8をロックリング7に係合させることができる。
In the above configuration, when assembling the separation preventing pipe joint, as shown in FIG. 5A, the receiving port 1a and the insertion port 2 in which the elastic sealing material 5 is fitted in the opening side annular groove 3 are used.
a and concentrically arranged with their leading ends facing each other, the insertion port 2a is inserted into the receiving port 1a as shown in FIG. In this state, the insertion opening 2 a is rotated by a predetermined angle α in a state in which the projection 22 is inserted farther from the lock ring 7 so that each projection 22 faces the uncut portion between the recesses 21. Thereby, the stopper 8 can be engaged with the lock ring 7.

【0018】上記構成によれば、一方の管体1の受口1
aに他方の管体2の挿口2aをスリップオン式に簡単に
嵌合させることができる。図6は本発明の第3の実施の
形態である離脱防止管継手を示すものであって、挿口2
aの外周面先端に設けたストッパー8が所定間隔をおい
て平行する第1、第2のストッパー8a,8bからな
り、該両ストッパー8a,8b間の挿口2aの部分に薄
肉部24が形成され、ロックリング7が第1ストッパー
8aに対向して受口1aに一体突設されている。上記以
外の構成は図1及び図2に記載の第1の実施の形態とほ
ぼ同じであるから、同一部分に同一符号を付してその説
明を省略する。
According to the above configuration, the receiving port 1 of the one tubular body 1
The insertion opening 2a of the other tube body 2 can be easily fitted in a in a slip-on manner. FIG. 6 shows a fitting for preventing disengagement according to a third embodiment of the present invention.
The stopper 8 provided at the tip of the outer peripheral surface of the first member a comprises first and second stoppers 8a and 8b which are parallel to each other at a predetermined interval, and a thin portion 24 is formed at the insertion opening 2a between the stoppers 8a and 8b. The lock ring 7 protrudes integrally with the receiving port 1a so as to face the first stopper 8a. Since the configuration other than the above is almost the same as that of the first embodiment shown in FIGS. 1 and 2, the same reference numerals are given to the same parts and the description thereof will be omitted.

【0019】上記構成によれば、通常使用時の水圧や温
度変化の影響による引張力が両管体1,2にかかって
も、挿口2aの第1ストッパー8aが受口1aのロック
リング7に係合しているので、その両管体1,2の連結
状態が維持される。また、地震時の地盤変動による過大
な引張力が両管体1,2にかかって第1ストッパー8a
がロックリング7に押し付けられると、薄肉部24が破
断され、第2ストッパー8bが端面4aに当たるまで挿
口2aが伸長移動されるから、過大な引張力が両管体
1,2にかからない。
According to the above configuration, the first stopper 8a of the insertion port 2a can be connected to the lock ring 7 of the receiving port 1a even when a tensile force due to the influence of water pressure or temperature change during normal use is applied to both the pipes 1 and 2. , The connected state of the two tubes 1, 2 is maintained. In addition, an excessive tensile force due to the ground deformation at the time of the earthquake is applied to both pipes 1 and 2, and the first stopper 8a
Is pressed against the lock ring 7, the thin portion 24 is broken, and the insertion opening 2a is extended and moved until the second stopper 8b hits the end face 4a, so that an excessive tensile force is not applied to both pipes 1 and 2.

【0020】図7は本発明の第4の実施の形態である離
脱防止管継手を示すものであって、ポリオレフィンなど
の合成樹脂材からなる一方の管体1の端部に一体形成し
た受口1aの奥部側環状溝4に支持リング6を介してロ
ックリング7が嵌合されると共に、該ロックリング7の
内周面に形成した歯部7bを挿口2aのストッパー8か
ら所定間隔をおいた外周面に食い込ませることにより、
そのロックリング7が挿口2aに係止され、インナーコ
ア11のロックリング7に対応する部分に切欠き部25
が形成されている。上記以外の構成は図4及び図5に記
載の第2の実施の形態とほぼ同じであるから、同一部分
に同一符号を付してその説明を省略する。
FIG. 7 shows a pipe joint for preventing separation according to a fourth embodiment of the present invention, which is formed integrally with an end of one pipe 1 made of a synthetic resin material such as polyolefin. The lock ring 7 is fitted into the inner annular groove 4 of the base 1a via the support ring 6, and the teeth 7b formed on the inner peripheral surface of the lock ring 7 are separated from the stopper 8 of the insertion opening 2a by a predetermined distance. By penetrating the outer peripheral surface
The lock ring 7 is locked in the insertion opening 2a, and a notch 25 is formed in a portion of the inner core 11 corresponding to the lock ring 7.
Are formed. Since the configuration other than the above is substantially the same as that of the second embodiment shown in FIGS. 4 and 5, the same portions are denoted by the same reference numerals and description thereof will be omitted.

【0021】上記構成によれば、通常使用時の水圧や温
度変化の影響による引張力が両管体1,2にかかって
も、受口1aに設けたロックリング7が挿口2aに係止
されているので、その両管体1,2の連結状態が維持さ
れる。また、地震時の地盤変動による過大な引張力が受
口1aと挿口2aとの間にかかると、図7に仮想線で示
すように、挿口2aのロックリング7に対応する部分が
弾性変形されることにより、その挿口2aとロックリン
グ7との係止状態が解除されて挿口2aが伸長移動され
るから、過大な引張力が両管体1,2にかからない。
According to the above configuration, even when a tensile force due to the influence of water pressure or temperature change during normal use is applied to both pipes 1 and 2, the lock ring 7 provided in the receiving port 1a is locked to the insertion port 2a. Therefore, the connected state of the two tubes 1 and 2 is maintained. When an excessive tensile force due to the ground deformation at the time of the earthquake is applied between the receiving port 1a and the insertion port 2a, a portion of the insertion port 2a corresponding to the lock ring 7 is elastic as shown by a virtual line in FIG. By being deformed, the locked state between the insertion port 2a and the lock ring 7 is released, and the insertion port 2a is extended and moved, so that an excessive tensile force is not applied to both the tubular bodies 1 and 2.

【0022】この場合、受口1aと挿口2aとの嵌合状
態を維持する離脱防止機能を備えているから、アンカー
C(図8及び図9参照)が不要であり、工期を大幅に短
縮することができると共に、工事費を安くすることがで
きる。また、地震時の地盤変動による過大な引張力が受
口1aと挿口2aとの間にかかったときには、挿口2a
とロックリング7との係止状態を解除して、挿口2aを
伸長移動させるから、過大な引張力を吸収することがで
き、耐震機能も備えている。
In this case, since a detachment preventing function for maintaining the fitting state of the receiving port 1a and the insertion port 2a is provided, the anchor C (see FIGS. 8 and 9) is unnecessary, and the construction period is greatly reduced. Construction costs can be reduced. Further, when an excessive tensile force due to the ground deformation at the time of the earthquake is applied between the receiving opening 1a and the insertion opening 2a, the insertion opening 2a
The locking state between the lock ring 7 and the lock ring 7 is released to extend the insertion opening 2a, so that an excessive tensile force can be absorbed, and a seismic function is also provided.

【0023】[0023]

【発明の効果】請求項1記載の発明によれば、受口と挿
口との嵌合状態を維持する離脱防止機能を備えているか
ら、アンカーが不要であり、工期を大幅に短縮すること
ができると共に、工事費を安くすることができる。ま
た、地震時の地盤変動による過大な引張力が受口と挿口
との間にかかったときには、受口または挿口に設けた薄
肉部が破断されて、挿口を伸長移動させるから、過大な
引張力を吸収することができ、耐震機能も備えている。
According to the first aspect of the present invention, since there is provided a detachment preventing function for maintaining the fitting state of the receiving port and the insertion port, no anchor is required, and the construction period is greatly reduced. And construction costs can be reduced. Also, if excessive tensile force due to ground deformation during an earthquake is applied between the receiving port and the insertion port, the thin portion provided at the receiving port or the insertion port will be broken, and the insertion port will be extended and moved. It is capable of absorbing a high tensile force and has an earthquake-resistant function.

【0024】請求項2記載の発明によれば、請求項1記
載の発明と同様に、離脱防止機能を備えているから、ア
ンカーが不要であり、工期を大幅に短縮することができ
ると共に、工事費を安くすることができる。また、地震
時の地盤変動による過大な引張力が受口と挿口との間に
かかったときには、挿口とロックリングとの係止状態が
解除されて、挿口を伸長移動させるから、過大な引張力
を吸収することができ、耐震機能も備えている。
According to the second aspect of the present invention, similar to the first aspect of the present invention, since a detachment preventing function is provided, an anchor is not required, and the construction period can be greatly shortened, and the construction work can be shortened. Costs can be reduced. Also, if excessive tensile force due to ground deformation during an earthquake is applied between the receiving port and the insertion port, the locking state between the insertion port and the lock ring is released, and the insertion port is extended and moved. It is capable of absorbing a high tensile force and has an earthquake-resistant function.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明の第1の実施の形態である離脱防止管
継手の縦断面図である。
FIG. 1 is a longitudinal sectional view of a separation-preventing pipe joint according to a first embodiment of the present invention.

【図2】 図1のA−A矢視図である。FIG. 2 is a view as viewed in the direction of arrows AA in FIG. 1;

【図3】 (a)及び(b)は同離脱防止管継手の組立
手順を示す縦断面図である。
FIGS. 3 (a) and 3 (b) are longitudinal sectional views showing a procedure for assembling the pipe joint.

【図4】 本発明の第2の実施の形態である離脱防止管
継手の横断面図である。
FIG. 4 is a cross-sectional view of a separation-preventing pipe joint according to a second embodiment of the present invention.

【図5】 (a)及び(b)は同離脱防止管継手の組立
手順を示す縦断面図である。
5 (a) and 5 (b) are longitudinal sectional views showing an assembling procedure of the same separation preventing pipe joint.

【図6】 本発明の第3の実施の形態である離脱防止管
継手の縦断面図である。
FIG. 6 is a longitudinal sectional view of a separation-preventing pipe joint according to a third embodiment of the present invention.

【図7】 本発明の第4の実施の形態である離脱防止管
継手の縦断面図である。
FIG. 7 is a longitudinal sectional view of a separation-preventing pipe joint according to a fourth embodiment of the present invention.

【図8】 従来の一例を示す概略側面図である。FIG. 8 is a schematic side view showing an example of the related art.

【図9】 従来の他の例を示す概略側面図である。FIG. 9 is a schematic side view showing another conventional example.

【符号の説明】[Explanation of symbols]

1 一方の管体 1a 受口 2 他方の管体 2a 挿口 5 弾性シール材 7 ロックリング 7a 薄肉部 8 ストッパー 11 インナーコア 24 薄肉部 25 切欠き部 DESCRIPTION OF SYMBOLS 1 One pipe 1a Reception port 2 The other pipe 2a Insertion port 5 Elastic seal material 7 Lock ring 7a Thin part 8 Stopper 11 Inner core 24 Thin part 25 Notch

───────────────────────────────────────────────────── フロントページの続き (72)発明者 山田 良樹 大阪府堺市石津北町64番地 株式会社クボ タビニルパイプ工場内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshiki Yamada 64 Ishizukita-cho, Sakai-shi, Osaka Inside Kubota Vinyl Pipe Factory

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 一方の管体の端部に設けた受口の内周面
に環状弾性シール材とロックリングとが設けられると共
に、他方の管体の端部に設けた挿口の外周面先端にスト
ッパーが設けられ、前記受口と挿口とを嵌合させること
により、前記弾性シール材の先端部が挿口の外周面に密
着されると共に、前記ロックリングとストッパーとが互
いに係合されるようにした離脱防止管継手において、前
記両管体が合成樹脂材により形成され、前記ロックリン
グまたは前記ストッパーの根元付近に薄肉部が形成され
ており、前記受口と挿口との間に所定以上の引張力が作
用して前記ストッパーが前記ロックリングに押し付けら
れることにより、前記薄肉部が破断されて前記挿口が伸
長移動されるように構成したことを特徴とする離脱防止
管継手。
1. An annular elastic seal member and a lock ring are provided on an inner peripheral surface of a receiving port provided at one end of one tubular body, and an outer peripheral surface of an insertion port provided at an end of the other tubular body. A stopper is provided at the distal end, and by fitting the receiving port and the insertion port, the distal end of the elastic sealing material is brought into close contact with the outer peripheral surface of the insertion port, and the lock ring and the stopper are engaged with each other. In the detachment prevention pipe joint, the two pipes are formed of a synthetic resin material, and a thin portion is formed near a base of the lock ring or the stopper, and the gap between the receiving port and the insertion port is formed. Wherein a predetermined or more tensile force acts on the stopper to press the stopper against the lock ring, so that the thin portion is broken and the insertion opening is extended and moved. .
【請求項2】 一方の管体の端部に設けた受口の内周面
に環状弾性シール材とロックリングとが設けられると共
に、他方の管体の端部に設けた挿口の外周面先端にスト
ッパーが設けられ、前記受口と挿口とを嵌合させること
により、前記弾性シール材の先端部が挿口の外周面に密
着されると共に、前記ロックリングとストッパーとが互
いに係合されるようにした離脱防止管継手において、前
記両管体が合成樹脂材により形成され、前記ロックリン
グの内周面が挿口の外周面に係止され、前記挿口の内周
面に嵌合させたインナーコアの前記ロックリングに対応
する部分に切欠き部が形成されており、前記受口と挿口
との間に所定以上の引張力が作用して該挿口の前記ロッ
クリングに対応する部分が弾性変形されることにより、
その挿口とロックリングとの係止状態が解除されて挿口
が伸長移動されるように構成したことを特徴とする離脱
防止管継手。
2. An annular elastic seal material and a lock ring are provided on an inner peripheral surface of a receiving port provided at one end of one tubular body, and an outer peripheral surface of an insertion port provided at an end of the other tubular body. A stopper is provided at the distal end, and by fitting the receiving port and the insertion port, the distal end of the elastic sealing material is brought into close contact with the outer peripheral surface of the insertion port, and the lock ring and the stopper are engaged with each other. In the detachment prevention pipe joint, the two pipe bodies are formed of a synthetic resin material, and the inner peripheral surface of the lock ring is locked to the outer peripheral surface of the insertion port, and is fitted to the inner peripheral surface of the insertion port. A cutout portion is formed in a portion of the combined inner core corresponding to the lock ring, and a predetermined or more tensile force acts between the receiving port and the insertion port to apply a force to the lock ring of the insertion port. The corresponding part is elastically deformed,
A detachment prevention pipe joint characterized in that the locking state between the insertion opening and the lock ring is released and the insertion opening is extended.
JP6916398A 1998-03-19 1998-03-19 Anti-release pipe joint Pending JPH11270763A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6916398A JPH11270763A (en) 1998-03-19 1998-03-19 Anti-release pipe joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6916398A JPH11270763A (en) 1998-03-19 1998-03-19 Anti-release pipe joint

Publications (1)

Publication Number Publication Date
JPH11270763A true JPH11270763A (en) 1999-10-05

Family

ID=13394775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6916398A Pending JPH11270763A (en) 1998-03-19 1998-03-19 Anti-release pipe joint

Country Status (1)

Country Link
JP (1) JPH11270763A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112008001502T5 (en) 2007-06-05 2010-05-12 Suiken Co., Ltd. Boltless connection structure and method for producing a boltless connection structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112008001502T5 (en) 2007-06-05 2010-05-12 Suiken Co., Ltd. Boltless connection structure and method for producing a boltless connection structure
US8118331B2 (en) 2007-06-05 2012-02-21 Suiken Co., Ltd. Non-bolt joint structure and method for producing non-bolt joint structure
DE112008001502B4 (en) 2007-06-05 2020-08-06 Suiken Co., Ltd. Boltless connection structure

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