JP2011140997A - Sealant with separation preventive function and separation preventing pipe coupling - Google Patents

Sealant with separation preventive function and separation preventing pipe coupling Download PDF

Info

Publication number
JP2011140997A
JP2011140997A JP2010002436A JP2010002436A JP2011140997A JP 2011140997 A JP2011140997 A JP 2011140997A JP 2010002436 A JP2010002436 A JP 2010002436A JP 2010002436 A JP2010002436 A JP 2010002436A JP 2011140997 A JP2011140997 A JP 2011140997A
Authority
JP
Japan
Prior art keywords
receiving port
receiving
sealing material
port
lock body
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
Application number
JP2010002436A
Other languages
Japanese (ja)
Other versions
JP5534821B2 (en
Inventor
Keita Kaneko
啓太 兼子
Takatoshi Ochi
孝敏 越智
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 JP2010002436A priority Critical patent/JP5534821B2/en
Publication of JP2011140997A publication Critical patent/JP2011140997A/en
Application granted granted Critical
Publication of JP5534821B2 publication Critical patent/JP5534821B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Joints With Sleeves (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealant with the separation preventive function for easily performing joining work of a pipe in a short time, without requiring large force when joining a spigot to a socket. <P>SOLUTION: This sealant 7 arranged in a sealant storage groove 6 of the socket 3 is constituted by embedding a separation preventive lock body 10 in an elastic and compressible sealant body 9, and the sealant storage groove 6 of the socket 3 is formed with a socket inner surface projection part 8 projecting inside in the pipe diameter direction, and the lock body 10 is formed with a claw part 10a biting in an outer peripheral surface of the spigot 5 when the spigot 5 tries to slip out of the socket 3 and a projection part storage recess part 10b capable of storing the socket inner surface projection part 8 when the spigot 5 is inserted into the socket 3 in the sealant storage groove 6 of the socket 3. Thus, only by moving the lock body 10 by a relatively small rotation angle, it becomes an attitude capable of allowing insertion of the spigot 5, so that inserting time force can be reduced. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、互いに接続した管同士が離脱することを防止する離脱防止管継手に用いる離脱防止機能付きシール材、および離脱防止用管継手に関するものである。   The present invention relates to a sealing material with a separation preventing function used for a separation preventing pipe joint for preventing the pipes connected to each other from separating and a separation preventing pipe joint.

地中に敷設される水道管路などとして、ダクタイル鋳鉄管などの管を複数接続して管路を構成することは既に広く知られている。この種の管路において、曲管やT字管などの異形管を用いる場合には、この異形管の曲がり部分や分岐部分(すなわち、水の流れ方向が変更される箇所)で水圧によって管を移動させようとする力(不平均力)が作用するため、このような不平均力が作用しても管同士が互いに離脱することを防止する機能を付加している。   It is already widely known that pipes are configured by connecting a plurality of pipes such as ductile cast iron pipes as water pipes laid in the ground. In this type of pipe, when using a deformed pipe such as a curved pipe or a T-shaped pipe, the pipe is connected by water pressure at a bent portion or a branched portion (that is, a location where the water flow direction is changed). Since a force (non-average force) to be moved acts, a function is added to prevent the tubes from separating from each other even if such an unbalance force is applied.

従来の管の離脱防止構造としては、図6に示すように、異形管(図6においては曲管)51と、この異形管51に接続された管52、53との接合部(継手部)54とにわたって、コンクリートブロック55で覆う構造(コンクリートブロック構造と称す)が用いられており、このように管52、53と異形管51とをコンクリートブロック55で一体化して、管52、53と異形管51との離脱を防止している。また、別の管の離脱防止構造として、図7、図8に示すように、管61、62の受口63の内周面と挿口64の外周面とに、ロックリング65を配設するロックリング収容溝66、67を形成して、これらの溝66、67にわたって周方向1つ割りのロックリング65を配設するとともに、管61、62の接合後に、ロックリング65を、受口63を管径方向に貫通するセットボルト68により管径方向内側に押圧して、ロックリング65の拡径を阻止し、これにより、ロックリング65を介して管61、62の離脱を防止する構造が用いられている。   As a conventional structure for preventing the separation of the pipe, as shown in FIG. 6, a joint (joint part) between a deformed pipe (bent pipe in FIG. 6) 51 and pipes 52 and 53 connected to the deformed pipe 51. 54, a structure covered with a concrete block 55 (referred to as a concrete block structure) is used, and the pipes 52 and 53 and the deformed pipe 51 are integrated with the concrete block 55 in this way, and the pipes 52 and 53 and the deformed form are formed. The separation from the tube 51 is prevented. As another pipe detachment prevention structure, as shown in FIGS. 7 and 8, a lock ring 65 is disposed on the inner peripheral surface of the receiving port 63 and the outer peripheral surface of the insertion port 64 of the tubes 61 and 62. The lock ring receiving grooves 66 and 67 are formed, and the lock ring 65 divided in the circumferential direction is disposed over the grooves 66 and 67. After the pipes 61 and 62 are joined, the lock ring 65 is inserted into the receiving port 63. A structure is provided in which the lock ring 65 is prevented from being expanded by pressing the inner side of the lock ring 65 by a set bolt 68 penetrating through the lock ring 65, thereby preventing the pipes 61 and 62 from being detached via the lock ring 65. It is used.

しかし、図6に示すようなコンクリートブロック構造を用いる場合には、コンクリートブロック55を完全に硬化させてから、地中に配設しなければならないので、コンクリートが硬化するまでに多くの時間を要する。したがって、道路を早期に復旧させる必要がある場合には、図6に示すようなコンクリートブロック構造は採用されず、図8に示すようなロックリング65を用いる構造が採用される。   However, when a concrete block structure as shown in FIG. 6 is used, since the concrete block 55 must be completely hardened and then placed in the ground, it takes a long time for the concrete to harden. . Therefore, when it is necessary to restore the road at an early stage, the concrete block structure as shown in FIG. 6 is not adopted, and the structure using the lock ring 65 as shown in FIG. 8 is adopted.

ところが、図8に示すようなロックリング構造を用いる場合には、ロックリング65を縮径させながら受口63の溝66に嵌め込む際に、縮径用の治具や設備を必要として設備費などのコストの増加を招いたり、この嵌め込み作業に多くの時間を要したりする欠点を生じてしまう。   However, when the lock ring structure as shown in FIG. 8 is used, when fitting the lock ring 65 into the groove 66 of the receiving port 63 while reducing the diameter, a reduction diameter jig and equipment are required. This causes a disadvantage that the cost increases and the fitting operation takes a lot of time.

このような欠点を改善可能な離脱防止管継手として、図9〜図12に示すような離脱防止機能を付与したシール材(以下、離脱防止機能付きシール材、或いは単にシール材と称す)70を離脱防止管継手に設けることが提案されている。すなわち、図10、図11に示すように、受口71の内周面に形成したシール材収容溝72に、弾性を有するシール材本体78を配設させるが、このシール材本体78に、内周部に爪部73aが形成されたロック体73を埋設する。そして、前記不平均力などによって、図12に示すように、管同士が離脱方向に移動しようとした際(つまり、受口71に対して、相対的に挿口75がc方向に移動しようとして、受口71から挿口75が離脱しようとした際)には、ロック体73が、受口71のシール材収容溝72に形成した受口内面突部76に当接しながらa方向に回転して、ロック体73の爪部73aが挿口75の外周面に食い込み、この結果、管同士の離脱を阻止する(つまり、受口71から挿口75が離脱することを阻止する)よう構成されている。   As a detachment prevention pipe joint that can improve such a defect, a seal material (hereinafter referred to as a seal material with a detachment prevention function, or simply referred to as a seal material) 70 provided with a detachment prevention function as shown in FIGS. It has been proposed to be provided in a detachment prevention pipe joint. That is, as shown in FIGS. 10 and 11, a sealing material body 78 having elasticity is disposed in a sealing material housing groove 72 formed on the inner peripheral surface of the receiving port 71. A lock body 73 having a claw 73a formed in the periphery is embedded. Then, due to the non-average force or the like, as shown in FIG. 12, when the tubes try to move in the separation direction (that is, the insertion port 75 tries to move in the c direction relative to the receiving port 71. When the insertion port 75 is about to be detached from the receiving port 71), the lock body 73 rotates in the direction a while abutting against the receiving port inner protrusion 76 formed in the sealing material accommodation groove 72 of the receiving port 71. Thus, the claw portion 73a of the lock body 73 bites into the outer peripheral surface of the insertion port 75, and as a result, the separation of the tubes is prevented (that is, the insertion port 75 is prevented from being detached from the receiving port 71). ing.

なお、ロック体73における上部には、受口71のシール材収容溝72に形成した受口内面突部76に当接する湾曲溝部73bが、受口内面突部76よりも大きな曲率半径で浅く窪んだ形状で形成されている。そして、挿口挿入時(管接合時)には、図11に示すように、受口71のシール材収容溝72に形成した受口内面突部76に、ロック体73に形成した湾曲溝部73bが摺接した状態で、ロック体73が挿口75の挿入を許容するように、すなわちロック体73の爪部73aが挿口75の外周面よりも外側に移動するまで、ロック体73全体がシール材本体78を変形させながらd方向に回転する。   Note that a curved groove portion 73 b that abuts the receiving inner surface protrusion 76 formed in the sealing material receiving groove 72 of the receiving port 71 is shallowly recessed with a larger radius of curvature than the receiving port inner surface protruding portion 76. It is formed in a shape. At the time of insertion insertion (at the time of pipe joining), as shown in FIG. 11, a curved groove portion 73 b formed in the lock body 73 is formed on the receiving port inner surface protrusion 76 formed in the sealing material accommodation groove 72 of the receiving port 71. In a state where the lock body 73 is in sliding contact, the lock body 73 as a whole permits the insertion of the insertion opening 75, that is, until the claw portion 73 a of the lock body 73 moves outward from the outer peripheral surface of the insertion opening 75. The seal member main body 78 is rotated in the d direction while being deformed.

この離脱防止管継手構造を用いることで、離脱防止のための必要な作業としては、前記ロック体73を埋設した離脱防止機能付きシール材70を予め準備しておき、受口71内にこのシール材70を配設するだけで済む。したがって、縮径用の治具や設備などが不要となるとともに、ロックリングの縮径作業が不要であるので、この縮径作業を行う手間や時間を省くことができる。   By using this detachment prevention pipe joint structure, as a necessary work for detachment prevention, a seal member 70 with a detachment prevention function in which the lock body 73 is embedded is prepared in advance, and this seal is provided in the receiving port 71. It is only necessary to arrange the material 70. This eliminates the need for a diameter reduction jig and equipment, and also eliminates the need for a diameter reduction operation of the lock ring, thereby saving labor and time for the diameter reduction operation.

なお、図9〜図12に示す離脱防止管継手と類似した構造の離脱防止管継手が、特許文献1に開示されている。   Note that a separation preventing pipe joint having a structure similar to that of the separation preventing pipe joint shown in FIGS.

特開平6−221478号公報JP-A-6-221478

しかしながら、図9〜図12に示す離脱防止管継手や特許文献1に開示された離脱防止管継手では、挿口75を受口71に挿入して管を接合するときの挿入力として極めて大きな力が必要となるという課題がある。   However, in the detachment prevention pipe joint shown in FIGS. 9 to 12 and the detachment prevention pipe joint disclosed in Patent Document 1, an extremely large force is used as an insertion force when the insertion port 75 is inserted into the receiving port 71 to join the tubes. There is a problem that is necessary.

すなわち、図9〜図12に示す離脱防止管継手や、特許文献1に開示された離脱防止管継手を採用して管同士を接合する場合には、受口71のシール材収容溝72に離脱防止機能付きシール材70を配設した状態で、一方の管の受口71内に他方の管の挿口75を挿入するが、この際に、弾性を有するシール材本体78が、挿口75と受口71との間で圧縮されて挿口75に対して反発力を発生する。したがって、挿口75の挿入時には前記反発力を上回る力を加えてシール材本体78を圧縮させながら、挿口75を押し込む必要がある。   That is, when the separation preventing pipe joint shown in FIG. 9 to FIG. 12 or the separation preventing pipe joint disclosed in Patent Document 1 is employed to join the pipes together, it is detached in the sealing material accommodation groove 72 of the receiving port 71. In the state where the sealing material 70 with the preventing function is disposed, the insertion port 75 of the other tube is inserted into the receiving port 71 of one tube. And the receiving port 71 are compressed to generate a repulsive force with respect to the insertion port 75. Therefore, when inserting the insertion opening 75, it is necessary to push the insertion opening 75 while compressing the sealing material body 78 by applying a force exceeding the repulsive force.

ところが、シール材本体78には、金属片からなる剛性の大きなロック体73が埋設されているので、このロック体73が、シール材本体78を変形させながら挿口75の挿入を許容できる姿勢に傾く(回転する)だけの大きな力が、挿口75の挿入時に必要となる。つまり、図9〜図12に示す離脱防止管継手や特許文献1に開示された離脱防止管継手では、図11に示すように、挿口75の挿入時(管接合時)に、受口71のシール材収容溝72に形成した受口内面突部76に、ロック体73に形成した湾曲溝部73bが摺接しつつ、ロック体73全体が回転する構造であるので、ロック体73が挿口75の挿入を許容する姿勢となるまで、比較的大きい回転角度θ1だけ回転させなければならない。このためには、シール材本体78を極めて大きな力で圧縮させる必要があり、挿口75を受口71に挿入する力として極めて大きな力が必要となる。   However, since the sealing material body 78 is embedded with a highly rigid locking body 73 made of a metal piece, the locking body 73 is in a posture that allows the insertion port 75 to be inserted while deforming the sealing material body 78. A large force that only tilts (rotates) is required when the insertion opening 75 is inserted. That is, in the detachment prevention pipe joint shown in FIGS. 9 to 12 and the detachment prevention pipe joint disclosed in Patent Document 1, as shown in FIG. 11, when the insertion opening 75 is inserted (at the time of pipe joining), the receiving port 71 is provided. Since the curved groove 73b formed in the lock body 73 is in sliding contact with the receiving-portion inner surface protrusion 76 formed in the sealing material accommodation groove 72, the lock body 73 rotates in its entirety, and therefore the lock body 73 is inserted into the insertion port 75. Must be rotated by a relatively large rotation angle θ1 until the posture allows the insertion of. For this purpose, it is necessary to compress the sealing material main body 78 with an extremely large force, and an extremely large force is required as a force for inserting the insertion port 75 into the receiving port 71.

したがって、このようなロック体73が埋設されたシール材70を備えた離脱防止管継手を採用した場合には、管同士を接合する際に、ロック体73が埋設されていない通常のシール材の離脱防止管継手を採用する場合とは異なる、大きな挿入力を得ることができる特殊な接合用治具が必要となっていた。その結果、縮径用の治具は不要でありながら、前記特殊な接合用治具を要して、設備費などのコストの低減を十分には図ることができなくなるという課題を有していた。   Therefore, when the separation preventing pipe joint including the sealing material 70 in which the lock body 73 is embedded is employed, when the pipes are joined to each other, a normal sealing material in which the lock body 73 is not embedded is used. Different from the case of adopting the separation preventing pipe joint, a special joining jig capable of obtaining a large insertion force has been required. As a result, there is a problem that a jig for reducing the diameter is not necessary, but the special joining jig is required, and it is impossible to sufficiently reduce costs such as equipment costs. .

本発明は上記課題を解決するもので、管の接合作業を容易かつ短時間で行うことができ、しかも、挿口の受口への接合時にあまり大きな力を要しなくても済む離脱防止管継手および離脱防止機能付きシール材を提供することを目的とするものである。   The present invention solves the above-mentioned problem, and can be easily and quickly joined to a tube, and the separation preventing tube does not require much force when joining the insertion port to the receiving port. An object of the present invention is to provide a joint and a sealing material with a detachment preventing function.

上記課題を解決するために本発明の離脱防止機能付きシール材は、互いに接合される一方の管の端部に形成された受口の内部に、他方の管の端部に形成された挿口が挿入される離脱防止管継手に用いられ、受口の内周に形成されたシール材収容溝に配設されて、受口と挿口との間で圧縮されることで挿口受口間のシールを行うシール材であって、弾性を有して圧縮可能なシール材本体に、離脱防止用のロック体が埋設された構成とされ、前記ロック体に、受口に対して挿口が抜け出ようとする際に挿口の外周面に食い込む爪部と、前記受口のシール材収容溝において管径方向の内側に突出するように形成された受口内面突部を収容可能な突部収容窪み部とが形成されていることを特徴とする。   In order to solve the above-mentioned problems, the sealing material with a detachment preventing function of the present invention has an insertion port formed at the end of the other tube inside the receiving port formed at the end of one of the tubes joined together. Is used in the separation prevention pipe joint, and is arranged in the sealing material receiving groove formed on the inner periphery of the receiving port, and compressed between the receiving port and the inserting port, A sealing material body that is elastic and compressible, and has a structure in which a lock body for detachment prevention is embedded in the lock body. A claw portion that bites into the outer peripheral surface of the insertion opening when trying to come out, and a protrusion that can receive the inner protrusion of the receiving port formed so as to protrude inward in the tube diameter direction in the sealing material receiving groove of the receiving port An accommodation recess is formed.

上記構成によれば、一方の管の受口に他方の管の挿口を挿入させる際に、ロック体の突部収容窪み部に、受口の受口内面突部が収容可能とされているので、従来のようにロック体を受口内面突部に摺接させながらロック体全体を回転させる動作を行わなくても済み、その分、ロック体を比較的小さな回転角度移動しただけで、挿口の挿入を許容可能な姿勢となる。したがって挿口挿入時の、ロック体が埋設されているシール材本体の圧縮量を少なくでき、ひいては挿入する際の力を低減することができる。   According to the above configuration, when the insertion port of the other tube is inserted into the reception port of the one tube, the receiving port inner surface protruding portion of the receiving port can be accommodated in the protruding portion receiving recess of the lock body. Therefore, there is no need to perform the operation of rotating the entire lock body while sliding the lock body against the protrusion on the inner surface of the receiving port as in the prior art. The posture allows the insertion of the mouth. Therefore, the amount of compression of the sealing material main body in which the lock body is embedded at the time of inserting the insertion opening can be reduced, and thus the force at the time of insertion can be reduced.

また、本発明の離脱防止機能付きシール材は、ロック体に爪部が複数形成され、少なくとも1つの爪部が、受口内面突部よりも受口の奥側に形成され、受口における受口内面突部よりも受口の開口端寄り箇所に設けられた、シール材のヒール部を嵌め込む嵌め込み溝に当接する箇所に、挿口の挿入時に前記ロック体が回動する支点となるロック体回動支点が設けられていることを特徴とする。   In the sealing material with a separation preventing function of the present invention, a plurality of claw portions are formed on the lock body, and at least one claw portion is formed on the back side of the receiving port with respect to the receiving port inner surface protruding portion. A lock that is provided at a location closer to the opening end of the receiving port than the projection on the inner surface of the mouth and that contacts the fitting groove into which the heel portion of the sealing material is fitted, and serves as a fulcrum for the lock body to rotate when the insertion port is inserted A body rotation fulcrum is provided.

上記構成によれば、ロック体回動支点が受口内面突部よりも受口の開口端寄り箇所に設けられるので、図9〜図12に示す離脱防止管継手や特許文献1の離脱防止管継手のようにロック体全体が受口内面突部に摺接しながら回転する場合、すなわち受口内面突部が設けられている箇所を中心として回転する構成の場合と比較して、ロック体の回転角度が小さくても爪部の挿口厚み方向(管径方向)の移動距離が大きくなる。したがって、ロック体を比較的小さな回転角度移動しただけで、挿口の挿入を許容可能な姿勢となり、挿口挿入時の、ロック体が埋設されているシール材本体の圧縮量を少なくでき、ひいては挿入する際の力を低減することができる。   According to the above configuration, the lock body rotation fulcrum is provided at a location closer to the opening end of the receiving port than the receiving port inner surface protrusion, so that the disconnection preventing pipe joint shown in FIGS. Rotation of the lock body as compared to the case where the entire lock body rotates like the joint while sliding in contact with the protrusion on the inner surface of the receiving port, that is, the structure rotating around the place where the protrusion on the inner surface of the receiving port is provided. Even if the angle is small, the moving distance of the claw portion in the insertion thickness direction (tube diameter direction) becomes large. Therefore, only by moving the lock body at a relatively small rotation angle, the posture allows the insertion of the insertion opening, and the amount of compression of the seal material body in which the lock body is embedded can be reduced when the insertion opening is inserted. The force at the time of insertion can be reduced.

また、本発明の離脱防止機能付きシール材は、突部収容窪み部が、挿口を受口に挿入しない状態において、受口開口寄り側の窪んだ面積が受口奥側の窪んだ面積よりも大きく形成されていることを特徴とする。   Further, in the sealing material with a detachment preventing function of the present invention, in a state in which the protruding portion receiving recess portion does not insert the insertion opening into the receiving opening, the recessed area closer to the receiving opening is more than the recessed area on the receiving end deep side. Is also formed large.

上記構成によれば、突部収容窪み部における受口開口寄り側の部分がより大きく窪んでいるので、受口のシール材収容溝や受口内面突部や挿口の外周面など、または、シール材やロック体の製造誤差などがあった場合でも、受口内面突部を良好に収容させることができる。つまり、突部収容窪み部における受口開口寄り側の部分が比較的小さめに窪んでいると、受口や挿口、または、シール材(ロック体を含む)の製造工程での製品寸法誤差などがあった場合に、受口内面突部を良好には収容できなくなるおそれがあるが、上記構成によれば、このような不具合の発生を最小限に抑えることができる。   According to the above configuration, since the portion closer to the opening of the receiving opening in the protruding portion receiving recess is recessed more greatly, the sealing material receiving groove of the receiving port, the protruding inner surface of the receiving port, the outer peripheral surface of the insertion port, or the like, or Even when there is a manufacturing error of the sealing material or the lock body, the receiving port inner surface protrusion can be satisfactorily accommodated. In other words, if the portion close to the opening of the receiving opening in the projecting portion receiving recess is recessed to a relatively small size, the product dimensional error in the manufacturing process of the receiving opening, the insertion opening, or the sealing material (including the lock body), etc. However, the above-described configuration can minimize the occurrence of such a problem.

以上のように本発明によれば、シール材本体内に埋設されたロック体に、受口のシール材収容溝において挿口が受口に挿入された際に、受口内面突部を収容可能な突部収容窪み部を形成することにより、挿口挿入時の力を低減させて、大きな挿入力を得るための特殊な接合用治具を必要としなくても済ますことが可能となり、この結果、設備費などのコストの低減を図ることができるとともに、管接合作業における作業能率を向上させることができる。   As described above, according to the present invention, the lock inner surface protruding portion can be accommodated in the lock body embedded in the seal material main body when the insertion port is inserted in the seal material receiving groove of the receiving port. As a result of the formation of a concave projection receiving recess, it is possible to reduce the force at the time of insertion and eliminate the need for a special joining jig to obtain a large insertion force. In addition, it is possible to reduce costs such as equipment costs and improve work efficiency in pipe joining work.

また、受口内面突部よりも受口の開口端寄り箇所に、挿口の挿入時にロック体が回動する支点となるロック体回動支点を設けることにより、挿口挿入時の力を低減することができて、特殊な接合用治具を必要としなくても済み、この結果、設備費などのコストの低減を図ることができるとともに、管接合作業における作業能率を向上させることができる。   In addition, by providing a lock body rotation fulcrum that serves as a fulcrum for the lock body to rotate when the insertion port is inserted closer to the opening end of the reception port than the protrusion on the inner surface of the reception port, the force during insertion of the insertion port is reduced. This eliminates the need for a special joining jig. As a result, it is possible to reduce costs such as equipment costs and improve work efficiency in pipe joining work.

(a)は本発明の実施の形態に係る離脱防止機能付きシール材を備えた離脱防止管継手を示す断面図、(b)は同離脱防止機能付きシール材の要部拡大断面図である。(A) is sectional drawing which shows the detachment prevention pipe joint provided with the sealing material with a detachment preventing function according to the embodiment of the present invention, (b) is an enlarged sectional view of the main part of the sealing material with the detachment preventing function. 同離脱防止管継手の要部拡大断面図で、受口に挿口を挿入する直前の状態を示す。It is a principal part expanded sectional view of the same detachment prevention pipe joint, and shows a state immediately before the insertion port is inserted into the receiving port. 同離脱防止管継手の要部拡大断面図で、受口に挿口を挿入した状態を示す。It is a principal part expanded sectional view of the separation prevention pipe joint, and shows the state where the insertion slot is inserted into the receiving slot. 同離脱防止管継手の要部拡大断面図で、挿口が受口から離脱しようとした際の状態を示す。It is a principal part expanded sectional view of the same detachment prevention pipe joint, and shows a state when the insertion port is about to detach from the receiving port. 同離脱防止管継手の離脱防止機能付きシール材の正面図である。It is a front view of the sealing material with a separation prevention function of the separation prevention pipe joint. 従来の管の離脱防止構造(コンクリートブロック構造)を概略的に示す図である。It is a figure which shows schematically the conventional detachment | leave prevention structure (concrete block structure) of a pipe | tube. 他の従来の離脱防止構造としての同離脱防止管継手の外観を示す図である。It is a figure which shows the external appearance of the separation prevention pipe joint as another conventional separation prevention structure. 同従来の離脱防止管継手の断面図である。It is sectional drawing of the same conventional detachment prevention pipe joint. さらに他の従来の離脱防止管継手の断面図である。It is sectional drawing of other conventional detachment prevention pipe joints. 同従来の離脱防止管継手の要部拡大断面図で、受口に挿口を挿入する直前の状態を示す。It is a principal part expanded sectional view of the conventional disconnection prevention pipe joint, and shows the state just before inserting an insertion port into a receptacle. 同従来の離脱防止管継手の要部拡大断面図で、受口に挿口を挿入した状態を示す。It is a principal part expanded sectional view of the conventional separation prevention pipe joint, and shows the state which inserted the insertion slot into the receptacle. 同従来の離脱防止管継手の要部拡大断面図で、挿口が受口から離脱しようとした際の状態を示す。It is a principal part expanded sectional view of the conventional separation prevention pipe joint, and shows the state at the time of an insertion port trying to detach | leave from a receptacle.

以下、本発明の実施の形態に係る離脱防止機能付きシール材、およびこの離脱防止機能付きシール材を備えた離脱防止管継手を図面に基づき説明する。なお、図1(a)、図2、図3、図4は、本発明の実施の形態に係る離脱防止機能付きシール材を備えた離脱防止管継手の断面図で、図2は受口に挿口を挿入する直前の状態を示し、図3は受口に挿口を挿入した状態を示し、図4は挿口が受口から離脱しようとした際の状態を示す。また、図1(b)は同離脱防止機能付きシール材の要部拡大断面図、図5は同離脱防止機能付きシール材の正面図である。   Hereinafter, a sealing material with a separation preventing function according to an embodiment of the present invention and a separation preventing pipe joint including the sealing material with a separation preventing function will be described with reference to the drawings. 1 (a), 2, 3, and 4 are cross-sectional views of a separation preventing pipe joint including a sealing material with a separation preventing function according to an embodiment of the present invention, and FIG. FIG. 3 shows a state immediately before the insertion port is inserted, FIG. 3 shows a state where the insertion port is inserted into the receiving port, and FIG. 4 shows a state when the insertion port tries to detach from the receiving port. FIG. 1B is an enlarged cross-sectional view of the main part of the sealing material with the separation preventing function, and FIG. 5 is a front view of the sealing material with the separation preventing function.

図1〜図3に示すように、本発明の実施の形態に係る離脱防止管継手1は、互いに接合される一方の管2の端部に形成された受口3の内部に、他方の管4の端部に形成された挿口5が挿入され、受口3の内周(詳しくは、受口3の管端面3aよりも奥側の部分の内周)に形成されたシール材収容溝6に環状のシール材7が配設され、受口3と挿口5との間でシール材7が圧縮されることで挿口受口間のシールが行われる。なお、図1における5aは挿口5の先端部外周に形成されて先端ほど細くなるように形成された挿口5の傾斜面である。   As shown in FIGS. 1 to 3, the detachment prevention pipe joint 1 according to the embodiment of the present invention includes the other pipe inside the receiving port 3 formed at the end of one pipe 2 to be joined to each other. 4 is inserted, and the sealing material accommodation groove formed on the inner periphery of the receiving port 3 (specifically, the inner periphery of the portion on the back side of the tube end surface 3a of the receiving port 3). 6 is provided with an annular sealing material 7, and the sealing material 7 is compressed between the receiving port 3 and the insertion port 5, whereby the insertion port is sealed. In addition, 5a in FIG. 1 is the inclined surface of the insertion port 5 formed in the outer periphery of the front-end | tip part of the insertion port 5, and formed so that it might become so thin that the front-end | tip.

ここで、本発明の実施の形態に係る離脱防止管継手1に備えられているシール材7は、後述するように、互いに接続した管2、4同士が離脱することを防止する離脱防止機能を有している。なお、管2、4は例えばダクタイル鋳鉄製とされているが、これに限るものではない。   Here, as will be described later, the sealing material 7 provided in the separation preventing pipe joint 1 according to the embodiment of the present invention has a separation preventing function for preventing the mutually connected tubes 2 and 4 from separating. Have. The pipes 2 and 4 are made of, for example, ductile cast iron, but are not limited thereto.

以下、シール材(離脱防止機能付きシール材)7と、このシール材7が配設される受口3のシール材収容溝6の構造などについて詳しく説明する。図1(a)、(b)、図2などに示すように、シール材7は、シール材7をシール材収容溝6内の所定位置に保持させるヒール部7aと、挿口受口間のシールを行うバルブ部7bとを一体化した形状とされ、図2に示すように、バルブ部7bは、外力を受けていない状態では断面略円形(あるいは断面略楕円形)とされている。また、これに対応して、シール材収容溝6にもシール材7のヒール部7aが嵌め込まれてシール材7を係止する嵌め込み溝6aと、シール材7のバルブ部7bが収容されるバルブ部収容溝6bとが形成されている。   Hereinafter, the structure of the sealing material (sealing material with a separation preventing function) 7 and the sealing material accommodation groove 6 of the receiving port 3 in which the sealing material 7 is disposed will be described in detail. As shown in FIGS. 1 (a), 1 (b), 2 and the like, the sealing material 7 includes a heel portion 7a that holds the sealing material 7 in a predetermined position in the sealing material accommodation groove 6 and an insertion port. The valve portion 7b for sealing is integrated with the valve portion 7b. As shown in FIG. 2, the valve portion 7b has a substantially circular cross section (or a substantially oval cross section) when not receiving external force. Correspondingly, a fitting groove 6a in which the heel portion 7a of the sealing material 7 is fitted into the sealing material accommodation groove 6 to lock the sealing material 7, and a valve in which the valve portion 7b of the sealing material 7 is accommodated. A part receiving groove 6b is formed.

さらに、受口3のシール材収容溝6における嵌め込み溝6aとバルブ部収容溝6bとの間には、管径方向の内側に突出する受口内面突部8が形成されている。なお、この実施の形態では受口内面突部8の先端部は断面略半円形状とされているが、この形状に限るものではない。   Furthermore, between the fitting groove 6a and the valve portion housing groove 6b in the sealing material housing groove 6 of the receiving port 3, a receiving port inner surface protruding portion 8 protruding inward in the pipe diameter direction is formed. In this embodiment, the tip of the receiving inner surface protrusion 8 has a substantially semicircular cross section, but the shape is not limited to this.

図1(a)、図2などに示すように、シール材7は、弾性を有して圧縮可能なゴム製などからなる環状のシール材本体9に、金属片などの剛性の大きな材料で形成された離脱防止用のロック体10が、図5に示すように周方向に間隔をおいて複数埋設された構成とされている。なお、この実施の形態では、8つのロック体10が周方向に等間隔で配設されている場合を図示しているが、これに限るものではなく、ロック体10の数を増減させたり、これに応じて配設する間隔を変更させたりしてもよい。   As shown in FIG. 1A, FIG. 2, and the like, the sealing material 7 is formed of a material having high rigidity such as a metal piece on an annular sealing material body 9 made of rubber that has elasticity and can be compressed. As shown in FIG. 5, a plurality of the locking members 10 for preventing separation are embedded at intervals in the circumferential direction. In addition, in this embodiment, although the case where the eight lock bodies 10 are arrange | positioned at equal intervals in the circumferential direction is illustrated, it is not restricted to this, The number of the lock bodies 10 can be increased / decreased, In accordance with this, the arrangement interval may be changed.

ロック体10には、図4に示すように、受口3に対して挿口5が抜け出ようとする際、すなわち、管2、4同士が互いに離脱方向に移動しようとする際に、挿口5の外周面に食い込む爪部10aと、図1〜図3に示すように、挿口5が受口3に挿入されて管2、4同士が接合された際に、受口3のシール材収容溝6において受口内面突部8を収容可能な突部収容窪み部10bとが形成されている。   As shown in FIG. 4, the lock body 10 has an insertion port when the insertion port 5 is about to come out of the receiving port 3, that is, when the tubes 2 and 4 are about to move away from each other. The claw portion 10a that bites into the outer peripheral surface of 5 and the sealing material of the receiving port 3 when the insertion port 5 is inserted into the receiving port 3 and the tubes 2 and 4 are joined to each other as shown in FIGS. In the housing groove 6, a projection housing recess 10 b capable of housing the receiving port inner surface projection 8 is formed.

爪部10aは、ロック体10よりシール材7の内側、より詳しくは、受口3の奥側および管径方向内側に斜めに突出する姿勢で、管軸心方向に対して並ぶように形成されている。なお、この実施の形態では、爪部10aは、管軸心方向に対して、一方の爪部10aが受口内面突部8よりも受口3の奥側に形成され、他方の爪部10aが受口内面突部8の内側先端部とほぼ同等の位置に形成されている。また、この実施の形態では、各ロック体10に2つの爪部10aが形成されている場合を示しているが、爪部10aを1つあるいは3つ以上形成してもよい。なお、爪部10aを1つだけ形成した場合には、受口3と挿口5との隙間が大きく変動する場合などに爪部10aが良好には食い込まないことがあるので、爪部10aは複数設けることが好ましい。   The claw portion 10a is formed so as to line up with respect to the tube axis direction in a posture that protrudes obliquely to the inner side of the seal material 7 from the lock body 10, more specifically, to the back side of the receiving port 3 and the inner side in the tube radial direction. ing. In this embodiment, the claw portion 10a is formed such that one claw portion 10a is formed on the back side of the receiving port 3 with respect to the tube inner surface protruding portion 8 with respect to the tube axis direction, and the other claw portion 10a. Is formed at substantially the same position as the inner tip of the receiving port inner protrusion 8. Moreover, in this embodiment, although the case where the two claw parts 10a are formed in each lock body 10 is shown, one or three or more claw parts 10a may be formed. In addition, when only one nail | claw part 10a is formed, when the clearance gap between the receiving port 3 and the insertion port 5 is fluctuate | varied largely, the nail | claw part 10a may not bite well, It is preferable to provide a plurality.

ロック体10の突部収容窪み部10bは、シール材7の内側、より詳しくは、ロック体10における管径方向外側部分において、管径方向内側に略半円形状より若干大きく窪むように形成されている。そして、図1(b)、図2に示すように、突部収容窪み部10bが、挿口5を受口3に挿入しない状態において、受口開口寄り側の窪んだ面積が受口奥側の窪んだ面積よりも大きく形成されている。また、この実施の形態では、突部収容窪み部10bにおける受口開口寄り側部分は、対応する受口内面突部8の形状よりもより深く窪ませた凹部10b’が形成されている。   The protrusion housing recess 10b of the lock body 10 is formed to be slightly larger than the substantially semicircular shape on the inner side of the seal member 7, more specifically, on the outer side in the tube radial direction of the lock body 10, on the inner side in the tube radial direction. Yes. Then, as shown in FIGS. 1B and 2, in the state in which the protruding portion receiving recess 10 b does not insert the insertion port 5 into the receiving port 3, the recessed area closer to the receiving port opening is the receiving back side. It is formed larger than the recessed area. Further, in this embodiment, a recessed portion 10 b ′ that is recessed deeper than the shape of the corresponding receiving port inner surface protruding portion 8 is formed in the portion closer to the receiving port opening in the protruding portion receiving recess portion 10 b.

図2、図3に示すように、シール材7のロック体10は、受口3に挿口5を挿入した際に、受口3の受口内面突部8が突部収容窪み部10bに収容されるb方向(図3参照)に回転するが、この際にロック体10が回転する支点となるロック体回動支点10cが、受口内面突部8よりも受口3の開口端寄り箇所に設けられている。詳しくは、ロック体回動支点10cは、受口3における受口内面突部8よりも受口3の開口端寄り箇所に設けられた、シール材7のヒール部7aを嵌め込む嵌め込み溝6aに当接する箇所、この実施の形態では、嵌め込み溝6aにおける受口内面突部8との接続部分に設けられている。   As shown in FIGS. 2 and 3, the lock body 10 of the seal member 7 is configured such that when the insertion port 5 is inserted into the receiving port 3, the receiving port inner surface protruding portion 8 of the receiving port 3 becomes the protruding portion receiving recess 10 b. The lock body rotation fulcrum 10c, which is a fulcrum for rotating the lock body 10 at this time, rotates closer to the accommodated b direction (see FIG. 3). It is provided in the place. Specifically, the lock body rotation fulcrum 10 c is provided in a fitting groove 6 a that is provided near the opening end of the receiving port 3 than the receiving port inner surface protruding portion 8 in the receiving port 3 and into which the heel portion 7 a of the sealing material 7 is fitted. In the contact portion, in this embodiment, the contact portion is provided at the connection portion with the receiving-portion inner surface protrusion 8 in the fitting groove 6a.

上記構成において、管2、4同士がまだ接合されていない状態、すなわち、受口3に挿口5がまだ挿入されていない状態では、シール材7は、受口3のシール材収容溝6に装着されているだけの状態であるので、図1(b)、図2に示すように、シール材7のバルブ部7bが管径方向の内側に大きく膨らんだ姿勢となっている。したがって、これに伴い、ロック体10も、後述する挿口5の挿入時と比べて、管径方向の内側(図2などにおける紙面の下方側)に寄った姿勢となって、爪部10aが管径方向の内側に大きく突出し、かつ、受口3の受口内面突部8が突部収容窪み部10bから離脱している姿勢である。   In the above configuration, in a state where the tubes 2 and 4 are not yet joined, that is, in a state where the insertion port 5 is not yet inserted into the receiving port 3, the sealing material 7 is inserted into the sealing material accommodation groove 6 of the receiving port 3. Since it is only attached, the valve portion 7b of the sealing material 7 is in a posture that swells greatly inward in the pipe radial direction, as shown in FIGS. Accordingly, the lock body 10 also has a posture closer to the inner side in the tube radial direction (lower side of the paper surface in FIG. 2 and the like) than when the insertion port 5 described later is inserted, and the claw portion 10a is It is a posture that protrudes greatly inward in the tube diameter direction and that the receiving port inner surface protruding portion 8 of the receiving port 3 is detached from the protruding portion receiving recess portion 10b.

この状態から、管2、4同士を接合すべく、受口3に挿口5を挿入させていくと、まず、シール材7のロック体10が、その爪部10aが挿口5の傾斜面5aに沿う姿勢(挿口5の傾斜面5aが導入できる姿勢となる)まで移動し、その後、シール材7のバルブ部7bも挿口5の傾斜面5aに沿いながら受口3と挿口5との間で圧縮される。そして、挿口5をさらに挿入させていくと、シール材7のロック体10が、その爪部10aが挿口5の傾斜面5aを乗り越えるようにして移動し、また、シール材7のバルブ部7bも挿口5の外周面と受口3との間でさらに圧縮される(図3参照)。   From this state, when the insertion port 5 is inserted into the receiving port 3 in order to join the tubes 2, 4, first, the lock body 10 of the sealing material 7, and the claw portion 10 a is the inclined surface of the insertion port 5. It moves to the attitude | position (it becomes an attitude | position which can introduce | transduce the inclined surface 5a of the insertion port 5) along 5a, and the valve part 7b of the sealing material 7 is also along the inclined surface 5a of the insertion port 5 after that, and the receiving port 3 and the insertion port 5 Compressed between. When the insertion port 5 is further inserted, the locking body 10 of the sealing material 7 moves so that the claw portion 10a gets over the inclined surface 5a of the insertion port 5, and the valve portion of the sealing material 7 7b is further compressed between the outer peripheral surface of the insertion port 5 and the receiving port 3 (see FIG. 3).

この場合において、ロック体10には、受口3のシール材収容溝6において挿口5が受口3に挿入された際に、受口内面突部8を収容可能な突部収容窪み部10bが形成されているので、ロック体10は、ロック体10全体が回転するのではなくて、ロック体回動支点10cを中心として、受口内面突部8に当接することなく、b方向に回転することができる。また、ロック体回動支点10cが受口内面突部8よりも受口3の開口端寄り箇所に設けられるので、図9〜図12に示す離脱防止管継手や特許文献1のようにロック体73全体が受口内面突部76に摺接しながら回転する場合、すなわち受口内面突部76が設けられている箇所を中心としてロック体73全体が回転する場合(回転角度θ1)と比較して、ロック体10の回転角度θ2が小さくても爪部10aの挿口厚み方向(管径方向)の移動距離が大きくなる。したがって、ロック体10は、ロック体回動支点10cを中心として、比較的小さな回転角度θ2移動しただけで、挿口5の挿入を許容可能な姿勢となる。このとき、ロック体10は、シール材本体9を圧縮させながら回転するが、ロック体10の回転角度θ2が小さくて済むので、挿口挿入時の、ロック体10が埋設されているシール材本体9の圧縮量(変形量)を少なくでき、ひいては挿口5を挿入する際の力を低減することができる。   In this case, the lock body 10 has a protrusion receiving recess 10b that can receive the receiving port inner protrusion 8 when the insertion port 5 is inserted into the receiving port 3 in the sealing material receiving groove 6 of the receiving port 3. Therefore, the lock body 10 does not rotate the entire lock body 10 but rotates in the b direction around the lock body rotation fulcrum 10c without contacting the receiving port inner protrusion 8. can do. Further, since the lock body rotation fulcrum 10c is provided closer to the opening end of the receiving port 3 than the receiving port inner surface projection 8, the locking member as shown in FIGS. Compared to the case where the entire body 73 is rotated while being in sliding contact with the receiving surface inner protrusion 76, that is, the entire locking body 73 is rotated around the position where the receiving surface inner surface protrusion 76 is provided (rotation angle θ1). Even if the rotation angle θ2 of the lock body 10 is small, the moving distance of the claw portion 10a in the insertion thickness direction (tube diameter direction) becomes large. Therefore, the lock body 10 has a posture in which the insertion of the insertion slot 5 can be permitted only by moving by a relatively small rotation angle θ2 around the lock body rotation fulcrum 10c. At this time, the lock body 10 rotates while compressing the seal material main body 9, but the rotation angle θ <b> 2 of the lock body 10 may be small, and therefore the seal material main body in which the lock body 10 is embedded at the time of insertion. The compression amount (deformation amount) 9 can be reduced, and as a result, the force when inserting the insertion slot 5 can be reduced.

この結果、大きな挿入力を得ることができる特殊な接合用治具を用いなくても、挿口5の挿入作業を行うことができて、設備費などのコストの低減を図ることができるとともに、挿入作業にかかる時間も少なくて済んで作業能率を向上させることができる。   As a result, the insertion operation of the insertion slot 5 can be performed without using a special joining jig capable of obtaining a large insertion force, and costs such as equipment costs can be reduced. The time required for the insertion work can be reduced and the work efficiency can be improved.

また、上記の構成によれば、ロック体10の突部収容窪み部10bが、挿口5を受口3に挿入しない状態において、受口開口寄り側の窪んだ面積が受口奥側の窪んだ面積よりも大きく形成されて、受口開口寄り側の部分がより大きく窪んでおり、また、この実施の形態では、突部収容窪み部10bにおける受口開口寄り側部分に、対応する受口内面突部8の形状よりも深く窪ませた凹部10b’が形成されているので、受口3のシール材収容溝6や受口内面突部8、挿口5の外周面、または、シール材7やロック体10などに、製造誤差などがあるなどして、挿口挿入時に万一、受口3の受口内面突部8が突部収容窪み部10bに当接した場合でも、ロック体10の突部収容窪み部10bの窪みが大きくなるように広がり易くなり、受口内面突部8を良好に収容させることができる。つまり、突部収容窪み部10における受口開口寄り側の部分が比較的小さめに窪んでいると、受口3や挿口5、または、シール材7(ロック体10を含む)の製造工程での製品寸法誤差などがあって、挿口挿入時に受口3の受口内面突部8が突部収容窪み部10bに当接した場合に、ロック体10の突部収容窪み部10bが広がり難いため、受口内面突部8を良好には収容できなくなり、結局、ロック体10全体が大きな回転角度で回転せざるを得なくなり、大きな挿入力が必要となるおそれがあるが、上記構成によれば、このような不具合の発生を最小限に抑えることができる。   Moreover, according to said structure, in the state which the protrusion accommodating hollow part 10b of the lock body 10 does not insert the insertion port 5 in the receiving port 3, the recessed area near the receiving port opening is a hollow in the receiving port back side. The portion closer to the receiving opening is formed to be larger than the area, and the portion closer to the receiving opening is further recessed, and in this embodiment, the receiving opening corresponding to the portion near the receiving opening in the protruding portion receiving recess 10b is provided. Since the concave portion 10b ′ is formed so as to be deeper than the shape of the inner surface protrusion 8, the sealing material receiving groove 6 and the inner surface protrusion 8 of the receiving port 3, the outer peripheral surface of the insertion port 5, or the sealing material 7 or the lock body 10 due to a manufacturing error or the like, even if the receiving surface inner protrusion 8 of the receiving port 3 comes into contact with the protruding portion receiving recess 10b when the insertion port is inserted, the locking body 10 protrusion housing recesses 10b are easily expanded so that the recesses are larger, and the inner surface of the receiving port The part 8 can be satisfactorily accommodated. That is, if the portion closer to the opening of the receiving portion in the protruding portion receiving recess 10 is recessed relatively small, the manufacturing process of the receiving port 3, the insertion port 5, or the sealing material 7 (including the lock body 10). When the insertion-portion inner-surface projection 8 of the receptacle 3 comes into contact with the projection-receiving recess 10b when the insertion port is inserted, the projection-receiving recess 10b of the lock body 10 is difficult to expand. For this reason, it is impossible to satisfactorily accommodate the receiving-portion inner-surface protrusion 8 and eventually the lock body 10 as a whole must be rotated at a large rotation angle, which may require a large insertion force. Thus, the occurrence of such problems can be minimized.

1 離脱防止管継手
2、4 管
3 受口
5 挿口
6 シール材収容溝
7 シール材
8 受口内面突部
9 シール材本体
10 ロック体
10a 爪部
10b 突部収容窪み部
10b’凹部
10c ロック体回動支点
DESCRIPTION OF SYMBOLS 1 Detachment prevention pipe joint 2, 4 Pipe 3 Receptacle 5 Insertion 6 Seal material accommodation groove 7 Seal material 8 Receptacle inner surface protrusion 9 Seal material main body 10 Lock body 10a Claw part 10b Protrusion accommodation hollow part 10b 'recessed part 10c Lock Body rotation fulcrum

Claims (4)

互いに接合される一方の管の端部に形成された受口の内部に、他方の管の端部に形成された挿口が挿入される離脱防止管継手に用いられ、受口の内周に形成されたシール材収容溝に配設されて、受口と挿口との間で圧縮されることで挿口受口間のシールを行う離脱防止用のシール材であって、
弾性を有して圧縮可能なシール材本体に、離脱防止用のロック体が埋設された構成とされ、
前記ロック体に、受口に対して挿口が抜け出ようとする際に挿口の外周面に食い込む爪部と、前記受口のシール材収容溝において管径方向の内側に突出するように形成された受口内面突部を収容可能な突部収容窪み部とが形成されていることを特徴とする離脱防止機能付きシール材。
Used in an anti-separation fitting where an insertion port formed at the end of the other pipe is inserted into the receiving port formed at the end of one of the pipes that are joined together. It is disposed in the formed sealing material receiving groove, and is a sealing material for preventing detachment that seals between the insertion port and receiving port by being compressed between the receiving port and the insertion port,
It has a structure in which a lock body for preventing separation is embedded in an elastic and compressible sealing material body,
The lock body is formed so as to protrude into the inner diameter in the pipe radial direction in the sealing member receiving groove of the receiving port, and a claw portion that bites into the outer peripheral surface of the receiving port when the insertion port tries to come out from the receiving port A seal material with a detachment preventing function, characterized in that a projecting portion recess portion capable of storing the projected inner surface of the receiving port is formed.
ロック体に爪部が複数形成され、少なくとも1つの爪部が、受口内面突部よりも受口の奥側に形成され、受口における受口内面突部よりも受口の開口端寄り箇所に設けられた、シール材のヒール部を嵌め込む嵌め込み溝に当接する箇所に、挿口の挿入時に前記ロック体が回動する支点となるロック体回動支点が設けられていることを特徴とする請求項1に記載の離脱防止機能付きシール材。   A plurality of claw portions are formed on the lock body, at least one claw portion is formed on the back side of the receiving port with respect to the inner surface of the receiving port, and a location closer to the opening end of the receiving port than the inner surface of the receiving port at the receiving port A lock body rotation fulcrum that is a fulcrum for rotating the lock body when the insertion port is inserted is provided at a position that contacts the fitting groove into which the heel portion of the sealing material is fitted. The sealing material with a separation preventing function according to claim 1. 突部収容窪み部が、挿口を受口に挿入しない状態において、受口開口寄り側の窪んだ面積が受口奥側の窪んだ面積よりも大きく形成されていることを特徴とする請求項1または2に記載の離脱防止機能付きシール材。   The protrusion housing recess is formed so that a recessed area closer to the opening of the receiving opening is formed to be larger than a recessed area on the back of the receiving opening when the insertion opening is not inserted into the receiving opening. The sealing material with a separation preventing function according to 1 or 2. 請求項1〜3の何れか1項に記載の離脱防止機能付きシール材を備えていることを特徴とする離脱防止管継手。   A separation preventing pipe joint comprising the sealing material with a separation preventing function according to any one of claims 1 to 3.
JP2010002436A 2010-01-08 2010-01-08 Sealing material with separation prevention function and separation prevention pipe joint Active JP5534821B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010002436A JP5534821B2 (en) 2010-01-08 2010-01-08 Sealing material with separation prevention function and separation prevention pipe joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010002436A JP5534821B2 (en) 2010-01-08 2010-01-08 Sealing material with separation prevention function and separation prevention pipe joint

Publications (2)

Publication Number Publication Date
JP2011140997A true JP2011140997A (en) 2011-07-21
JP5534821B2 JP5534821B2 (en) 2014-07-02

Family

ID=44456994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010002436A Active JP5534821B2 (en) 2010-01-08 2010-01-08 Sealing material with separation prevention function and separation prevention pipe joint

Country Status (1)

Country Link
JP (1) JP5534821B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101186998B1 (en) 2012-07-16 2012-09-28 권태응 Synthetic resin pipe
KR101188807B1 (en) 2012-07-16 2012-10-09 권태응 Synthetic resin pipe
KR101673451B1 (en) * 2015-07-14 2016-11-07 주식회사 한양하이텍 Double watertight structure for water service pipe
KR102273554B1 (en) * 2021-03-08 2021-07-05 이문승 Connecting structure of water pipe
KR102273397B1 (en) * 2020-07-07 2021-07-06 (주) 삼정디씨피 Connecting structure of water pipe

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9829137B2 (en) 2014-03-20 2017-11-28 Griffin Pipe Products Co., Llc Flexible pipe joint

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963298A (en) * 1972-05-29 1976-06-15 Georg Seiler Socket connection of tubes or tubular elements, in particular of metal
JPS53104422A (en) * 1976-12-06 1978-09-11 United States Pipe Foundry Seal for pipe joint
US4229026A (en) * 1978-03-03 1980-10-21 Eisenwerke Friedr. Wilh. Duker Gmbh & Co. Socket connection for pipes and pipe elements
JPS59177890U (en) * 1983-05-17 1984-11-28 山口 正三 Disengagement prevention pipe fitting
JPS60178692U (en) * 1984-05-09 1985-11-27 株式会社クボタ conductive pipe fittings
JPS62181784U (en) * 1986-05-12 1987-11-18
JPH01112095A (en) * 1987-10-01 1989-04-28 Cie Saint Gobain Pont A Mousson Sealed packing for telescopic type fixing joint
JPH04249690A (en) * 1989-12-11 1992-09-04 Cie Saint Gobain Pont A Mousson Composite gasket for assembly for fitting spigot pipe and socket pipe together
JPH0632880U (en) * 1992-09-29 1994-04-28 株式会社クボタ Rubber ring for separation prevention fitting
JPH06221478A (en) * 1992-11-04 1994-08-09 United States Pipe Foundry Co Improved fixture for pressure tube junction
JP2005511997A (en) * 2001-12-12 2005-04-28 ユナイテッド ステイツ パイプ アンド ファンダリィ カンパニー インコーポレーテッド Fixing device and method for joining telescoping tubes

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963298A (en) * 1972-05-29 1976-06-15 Georg Seiler Socket connection of tubes or tubular elements, in particular of metal
JPS53104422A (en) * 1976-12-06 1978-09-11 United States Pipe Foundry Seal for pipe joint
US4229026A (en) * 1978-03-03 1980-10-21 Eisenwerke Friedr. Wilh. Duker Gmbh & Co. Socket connection for pipes and pipe elements
JPS59177890U (en) * 1983-05-17 1984-11-28 山口 正三 Disengagement prevention pipe fitting
JPS60178692U (en) * 1984-05-09 1985-11-27 株式会社クボタ conductive pipe fittings
JPS62181784U (en) * 1986-05-12 1987-11-18
JPH01112095A (en) * 1987-10-01 1989-04-28 Cie Saint Gobain Pont A Mousson Sealed packing for telescopic type fixing joint
JPH04249690A (en) * 1989-12-11 1992-09-04 Cie Saint Gobain Pont A Mousson Composite gasket for assembly for fitting spigot pipe and socket pipe together
JPH0632880U (en) * 1992-09-29 1994-04-28 株式会社クボタ Rubber ring for separation prevention fitting
JPH06221478A (en) * 1992-11-04 1994-08-09 United States Pipe Foundry Co Improved fixture for pressure tube junction
JP2005511997A (en) * 2001-12-12 2005-04-28 ユナイテッド ステイツ パイプ アンド ファンダリィ カンパニー インコーポレーテッド Fixing device and method for joining telescoping tubes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101186998B1 (en) 2012-07-16 2012-09-28 권태응 Synthetic resin pipe
KR101188807B1 (en) 2012-07-16 2012-10-09 권태응 Synthetic resin pipe
KR101673451B1 (en) * 2015-07-14 2016-11-07 주식회사 한양하이텍 Double watertight structure for water service pipe
KR102273397B1 (en) * 2020-07-07 2021-07-06 (주) 삼정디씨피 Connecting structure of water pipe
KR102273554B1 (en) * 2021-03-08 2021-07-05 이문승 Connecting structure of water pipe

Also Published As

Publication number Publication date
JP5534821B2 (en) 2014-07-02

Similar Documents

Publication Publication Date Title
JP5534821B2 (en) Sealing material with separation prevention function and separation prevention pipe joint
JP4836870B2 (en) Pipe joint sealing material and pipe joint using this sealing material
JP6289122B2 (en) Detachment prevention fitting
JP5455381B2 (en) Sealing material
JP5455382B2 (en) Pipe fittings and seals
JP4827171B2 (en) Pipe end blocking method using pipe stoppers
JP5489843B2 (en) Sealing material with separation prevention function and separation prevention pipe joint
JP6525636B2 (en) How to connect backup ring, fittings and pipes
JP5312181B2 (en) Detachment prevention fitting and lock ring centering member
JP2004211831A (en) Pipe joint structure
JP2009144755A (en) Pipe joint with anti-rotation function
JP2010174907A (en) Pipe joint
JP2005133928A (en) Pipe joint
JP2007255684A (en) Pipe joint
JP6571987B2 (en) Joint structure and pipe laying method
JP5610823B2 (en) Pipe fittings and seals for pipe fittings
JP2011106671A (en) Pipe joint
JP5377095B2 (en) Fitting structure and connecting pipe
JP2571432Y2 (en) Captive fittings
JP6675835B2 (en) Joint structure and pipe laying method
JP5473495B2 (en) Sealing material with pipe detachment prevention function and detachment prevention pipe joint
JP5105999B2 (en) Pipe fitting
JP5264284B2 (en) Pipe joint sealing material and pipe joint using this sealing material
JP2004060829A (en) Tube joint structure
JP2000170968A (en) Separation preventing pipe coupling

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120921

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130911

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130917

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20140325

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140422

R150 Certificate of patent or registration of utility model

Ref document number: 5534821

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150