JPH08109988A - Pipe coupling device - Google Patents
Pipe coupling deviceInfo
- Publication number
- JPH08109988A JPH08109988A JP6245927A JP24592794A JPH08109988A JP H08109988 A JPH08109988 A JP H08109988A JP 6245927 A JP6245927 A JP 6245927A JP 24592794 A JP24592794 A JP 24592794A JP H08109988 A JPH08109988 A JP H08109988A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- packing
- flange member
- mouthpiece
- annular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、略直線状に配列された
二本の管を互いにシール性を維持して接続する管継手装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint device for connecting two pipes arranged in a substantially straight line to each other while maintaining a sealing property.
【０００２】[0002]
【従来の技術】例えば、下水道の管路は略直線状に配列
された二本の管を接続することにより形成されている
が、その接続方法に種々のものがある。以下、その従来
の接続方法について述べる。第一の方法は、図４に示す
ように、接続すべき管１００の端部にフランジ１０１を
溶接し、フランジ１０１間でドーナツ状のパッキン１０
２を挾み、フランジ１０１同士を複数のボルト１０３と
ナット１０４とにより結合する方法である。2. Description of the Related Art For example, a sewer pipe is formed by connecting two pipes arranged in a substantially straight line, but there are various connecting methods. The conventional connection method will be described below. In the first method, as shown in FIG. 4, a flange 101 is welded to an end of a pipe 100 to be connected, and a donut-shaped packing 10 is provided between the flanges 101.
2 is sandwiched between the flanges 101 and the plurality of bolts 103 and nuts 104 are connected to each other.
【０００３】第二の方法は、図５に示すように、継手本
体１０５の両端部にリング状の食い込み環１０６と環状
のパッキン１０７とを収納した継手１０８を設け、接続
すべき管１００の端部近傍の外周面に環状の溝１０９を
形成し、これらの溝１０９に食い込み環１０６が係合す
るところまで管１００を継手１０８に嵌合することによ
り、継手１０８に対する管１００の抜止めをする方法で
ある。As a second method, as shown in FIG. 5, a joint 108 accommodating a ring-shaped biting ring 106 and an annular packing 107 is provided at both ends of the joint body 105, and the end of the pipe 100 to be connected is provided. An annular groove 109 is formed on the outer peripheral surface near the portion, and the pipe 100 is fitted into the joint 108 until the biting ring 106 engages with the groove 109, thereby preventing the pipe 100 from being pulled out from the joint 108. Is the way.
【０００４】第三の方法は、図６に示すように、継手本
体１１０の両端部に環状のパッキン１１１とリング１１
２と断面が山形の形状をしたリングチップ１１３とを設
けるとともに、外周の一部に装着確認窓１１４が形成さ
れたナット１１５を螺合してなる継手１１６を設け、管
１００の端部付近の外周に複数の環状の溝１１７を形成
し、継手１１６に管１００を挿入し、ナット１１５を締
め付けたときに、ナット１１５でリング１１２を管１０
０の軸方向に移動させてリング１１２によりパッキン１
１１を圧縮し、このナット１１５の移動時にその内面の
傾斜面でリングチップ１１３を押圧してリングチップ１
１３のエッジ部を管１００の溝１１７に係合させ、この
係合状態を装着確認窓１１４から確認した状態をもっ
て、正しい接続がなされたものとして認識する方法であ
る。The third method is, as shown in FIG. 6, an annular packing 111 and a ring 11 at both ends of the joint body 110.
2 and a ring tip 113 having a chevron-shaped cross section, and a joint 116 formed by screwing a nut 115 having a mounting confirmation window 114 formed on a part of the outer periphery thereof. When a plurality of annular grooves 117 are formed on the outer circumference, the pipe 100 is inserted into the joint 116, and the nut 115 is tightened, the ring 112 is connected to the pipe 112 by the nut 115.
The ring 112 is moved in the axial direction of 0 and packing 1
11 is compressed, and when the nut 115 is moved, the ring tip 113 is pressed by the inclined surface of the inner surface of the nut 115 so that the ring tip 1
This is a method in which the edge portion of 13 is engaged with the groove 117 of the pipe 100, and the state where this engagement state is confirmed through the mounting confirmation window 114 is recognized as a correct connection.
【０００５】第四の方法は、図７に示すように、継手本
体１１８の両端にそれぞれ環状のパッキン１１９とテー
パーリング１２０とを設けるとともに袋ナット１２１を
螺合してなる継手１２２を設け、この継手１２２の端部
に管１００を挿入し、袋ナット１２１を締め付けてテー
パーリング１２０を移動させ、このテーパーリング１２
０と継手本体１１８の端部との間でパッキン１１９を圧
縮する方法である。As a fourth method, as shown in FIG. 7, an annular packing 119 and a taper ring 120 are provided at both ends of a joint body 118, and a joint 122 formed by screwing a cap nut 121 is provided. Insert the pipe 100 into the end of the joint 122, tighten the cap nut 121, and move the taper ring 120.
The packing 119 is compressed between 0 and the end of the joint body 118.
【０００６】[0006]
【発明が解決しようとする課題】図４に示すものは、作
業現場において管１００の端部にフランジ１０１を溶接
する作業が大変でコストが高くなる。また、図５及び図
６に示すものは、管１００に溝１０９又は溝１１７を形
成する工程を必要とするため、配管工事が大変である。
さらに、図７に示すものは、袋ナット１２１の締付力に
よって管１００に対するパッキン１１９の圧接力が左右
され、シール性に影響が生ずるため、配管工事作業者に
よって水洩れ等が発生するおそれがある。In the structure shown in FIG. 4, the work of welding the flange 101 to the end of the pipe 100 at the work site is difficult and the cost is high. In addition, the pipes shown in FIGS. 5 and 6 require a step of forming the groove 109 or the groove 117 in the pipe 100, and thus the piping work is difficult.
Further, in the structure shown in FIG. 7, the pressure of the packing 119 against the pipe 100 is influenced by the tightening force of the cap nut 121, and the sealing property is affected. Therefore, water leakage or the like may occur by a plumbing worker. is there.
【０００７】[0007]
【課題を解決するための手段】請求項１記載の発明は、
管を囲繞する筒状部の一端に前記管の端部近傍の外周面
に圧接される環状の第一のシール部が連続して形成され
るとともに前記管を接続すべき相手側の管の端面に圧接
される環状の第二のシール部が前記筒状部の他端に連続
して形成された屈撓自在のパッキンと、このパッキンに
隣接されて前記管の外周面に嵌合される縮径自在の環状
の口金と、この口金の外周面を縮径方向に押圧する押圧
部と相手側の前記管の端面に結合される取付部とを有す
るフランジ部材とにより構成した管継手装置である。According to the first aspect of the present invention,
An annular first seal portion, which is in pressure contact with the outer peripheral surface near the end of the pipe, is continuously formed at one end of a tubular portion surrounding the pipe, and the end face of the mating pipe to which the pipe is to be connected A ring-shaped second seal portion, which is pressed into contact with the tubular portion, is formed continuously at the other end of the tubular portion, and is flexible and flexible, and a compression member that is adjacent to the packing and is fitted to the outer peripheral surface of the pipe. A pipe joint device constituted by a freely-circular annular base, and a flange member having a pressing portion for pressing the outer peripheral surface of the base in a diameter reducing direction and a mounting portion connected to the end surface of the mating pipe. .
【０００８】請求項２記載の発明は、請求項１記載の発
明において、前記フランジ部材の内側に遊嵌されて前記
パッキンの外周を囲繞する環状壁と、この環状壁の一端
に連続して形成されて前記口金の前記管の端部側の端面
を支える受部と、前記環状壁の他端に連続して形成され
て相手側の前記管の端面に当接される当接部とを有して
硬質材料により形成されたパッキンケースを設けた管継
手装置である。According to a second aspect of the present invention, in the first aspect of the present invention, an annular wall that is loosely fitted inside the flange member and surrounds the outer periphery of the packing is formed continuously with one end of the annular wall. And a receiving portion that supports the end surface of the pipe on the end portion side of the pipe, and a contact portion that is formed continuously at the other end of the annular wall and that abuts on the end surface of the mating pipe. And a packing case formed of a hard material.
【０００９】請求項３記載の発明は、請求項１又は２記
載の発明において、前記パッキンは前記筒状部と前記第
一のシール部との間及び前記筒状部と前記第二のシール
部との間に管路側に開口する環状の凹部を有する管継手
装置である。According to a third aspect of the present invention, in the first or second aspect of the invention, the packing has a space between the tubular portion and the first seal portion and between the tubular portion and the second seal portion. Is a pipe joint device having an annular concave portion that is open to the pipe path side between and.
【００１０】[0010]
【作用】請求項１記載の発明は、管の端部に遊嵌したフ
ランジ部材と、他の管の端面とを結合したときに、口金
が軸方向に変位するフランジ部材の押圧部により押圧さ
れて縮径するため、押圧部と管の外周との間で口金が楔
状に固定され、これにより、管に対してフランジ部材が
口金とともに固定される。したがって、相手側の管に接
続される管にフランジ加工や溝加工を施すことなく、管
同士が高いシール性をもって接続される。このため、管
の抜け止め防止を図ることが可能となる。According to the first aspect of the present invention, when the flange member loosely fitted to the end of the pipe and the end face of another pipe are connected, the mouthpiece is pressed by the pressing portion of the flange member which is displaced in the axial direction. Since the diameter is reduced, the base is fixed in a wedge shape between the pressing portion and the outer circumference of the pipe, whereby the flange member is fixed to the pipe together with the base. Therefore, the pipes connected to the mating pipe are connected to each other with a high sealing property without performing flange processing or groove processing on the pipes. Therefore, it is possible to prevent the pipe from coming off.
【００１１】請求項２記載の発明は、パッキンケースの
当接部を相手側の管の端面に当接させ、口金の端面をパ
ッキンケースの受部に当接させた状態で、管に嵌合した
フランジ部材を相手側の管の端面に結合するときに、口
金の軸方向の位置の動きがパッキンケースにより規制さ
れる。これにより、配管工事中に管の軸方向に対するフ
ランジ部材及び口金の位置のずれが防止される。さら
に、パッキンケースによりパッキンに無理な圧力が作用
する状態が回避される。According to a second aspect of the present invention, the contact portion of the packing case is brought into contact with the end surface of the mating pipe, and the end surface of the mouthpiece is brought into contact with the receiving portion of the packing case. When the flange member is joined to the end surface of the mating pipe, the movement of the die in the axial direction is restricted by the packing case. This prevents the flange member and the base from being displaced in the axial direction of the pipe during the piping work. Furthermore, the packing case avoids a state in which excessive pressure is applied to the packing.
【００１２】請求項３記載の発明は、配管工事後に液体
やガス等の流体を流したときに、その流体の圧力がパッ
キンの凹部の内面に作用するため、管の外周面に対する
パッキンの第一のシール部の圧接力、相手側の管の端面
に対するパッキンの第二のシール部の圧接力が高められ
る。According to the third aspect of the present invention, when a fluid such as a liquid or gas is flowed after the piping work, the pressure of the fluid acts on the inner surface of the recess of the packing, so that the first packing The pressure contact force of the seal part and the pressure contact force of the second seal part of the packing with respect to the end surface of the opposite pipe are increased.
【００１３】[0013]
【実施例】本発明の第一の実施例を図１及び図２に基づ
いて説明する。１は外周面がストレートな形状に定めら
れた管である。この管１の外周にはフランジ部材２と縮
径自在の環状の口金３とパッキンケース４とパッキン５
とが嵌合されている。フランジ部材２と口金３とパッキ
ンケース４とは剛性の高い金属により形成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. Reference numeral 1 denotes a pipe whose outer peripheral surface is determined to be straight. On the outer periphery of the pipe 1, a flange member 2, a ring-shaped base 3 that can be reduced in diameter, a packing case 4, and a packing 5
And are fitted. The flange member 2, the base 3, and the packing case 4 are made of metal having high rigidity.
【００１４】前記口金３の外周面には前記管１の端面に
向かうに従い次第に外径寸法が大きくなるテーパー球面
６が形成され、内周面には管１の外周に食い込む複数の
鋭利な爪７が形成されている。また、前記フランジ部材
２には、ボルト８が貫通される取付部である複数の取付
孔９と、前記パッキンケース４が遊嵌される円形の開口
部１０と、略前記テーパー球面６に沿って傾斜されてそ
のテーパー球面６を押圧する環状の押圧部１１とが形成
されている。そして、口金３はフランジ部材２の押圧部
１１に押圧されたときに弾性的に縮径して爪７を管１の
外周に食い込ませるように外周の一部に切欠１２を有し
ている。A tapered spherical surface 6 is formed on the outer peripheral surface of the mouthpiece 3 whose outer diameter gradually increases toward the end surface of the tube 1, and a plurality of sharp claws 7 that bite into the outer peripheral surface of the tube 1 are formed on the inner peripheral surface. Are formed. Further, the flange member 2 is provided with a plurality of mounting holes 9 which are mounting portions through which the bolts 8 penetrate, a circular opening 10 into which the packing case 4 is loosely fitted, and substantially along the tapered spherical surface 6. An annular pressing portion 11 that is inclined and presses the tapered spherical surface 6 is formed. The mouthpiece 3 has a notch 12 in a part of its outer circumference so that when it is pressed by the pressing portion 11 of the flange member 2, the diameter of the mouthpiece 3 is elastically reduced and the claw 7 bites into the outer circumference of the tube 1.
【００１５】前記パッキンケース４は、前記フランジ部
材２の開口部１０に遊嵌されて前記パッキン５の外周を
囲繞する環状壁１３と、この環状壁１３の一端に連続し
て形成されて前記口金３の前記管１の端部側の端面を支
える受部１４と、環状壁１３の他端に連続して形成され
た当接部１５とを有する。The packing case 4 is loosely fitted in the opening 10 of the flange member 2 and surrounds the outer periphery of the packing 5, and an annular wall 13 is formed continuously with one end of the annular wall 13 to form the mouthpiece. 3 has a receiving portion 14 that supports the end surface of the pipe 1 on the end portion side, and an abutting portion 15 that is formed continuously with the other end of the annular wall 13.
【００１６】前記パッキン５は、前記管１を囲繞する筒
状部１６と、この筒状部１６の一端に連続して形成され
て管１の端部近傍の外周面に圧接される環状の第一のシ
ール部１７と、筒状部１６の他端に連続して形成された
環状の第二のシール部１８とを有する。そして、筒状部
１６と第一のシール部１７との間及び筒状部１６と第二
のシール部１８との間に環状の凹部１９，２０が形成さ
れている。このようなパッキン５は、自由状態では図２
に示すように第一のシール部１７の内径ｄが管１の外径
よりも小さな値に定められている。また、パッキンケー
ス４にパッキン５を収納した状態では、パッキンケース
４の当接部１５の端面よりも、パッキン５の筒状部１６
の端部が僅かに突出するように、パッキンケース４及び
パッキン５が設計されている。The packing 5 has a tubular portion 16 surrounding the pipe 1, and an annular first portion continuously formed at one end of the tubular portion 16 and pressed against the outer peripheral surface near the end of the pipe 1. It has one seal portion 17 and an annular second seal portion 18 which is continuously formed at the other end of the tubular portion 16. Further, annular recesses 19 and 20 are formed between the tubular portion 16 and the first seal portion 17 and between the tubular portion 16 and the second seal portion 18. Such a packing 5 is shown in FIG.
As shown in, the inner diameter d of the first seal portion 17 is set to a value smaller than the outer diameter of the tube 1. Further, in the state where the packing 5 is housed in the packing case 4, the tubular portion 16 of the packing 5 is larger than the end surface of the contact portion 15 of the packing case 4.
The packing case 4 and the packing 5 are designed such that the ends of the packings 4 and 6 slightly project.
【００１７】図１において、２１は前記管１が接続され
る相手側の管で、この管２１の端部には前記取付孔９に
対応する複数の取付孔２２を有するフランジ２３が固定
的に設けられている。前記パッキンケース４の当接部１
５と前記パッキン５の第二のシール部１８とは、管２１
の端面２４（フランジ２３の端面）に当接されるもので
ある。In FIG. 1, reference numeral 21 denotes a mating pipe to which the pipe 1 is connected, and a flange 23 having a plurality of mounting holes 22 corresponding to the mounting holes 9 is fixedly provided at an end of the pipe 21. It is provided. Contact part 1 of packing case 4
5 and the second seal portion 18 of the packing 5 are
The end surface 24 (the end surface of the flange 23) is abutted.
【００１８】このような構成において、管１の外周面を
清掃した後に、フランジ部材２と口金３とパッキンケー
ス４とを順次管１の端部側から嵌合し、その後にパッキ
ン５の第一のシール部１７を弾性的に広げながら管１の
端部に圧入する。そして、第二のシール部１８が相手側
の管２１の端面に接触する位置までパッキン５をパッキ
ンケース４とともに管１の端部側に戻し、口金３をその
端部が受部１４に当接するまで戻し、フランジ部材２を
その押圧部１１が口金３のテーパー球面６に当接するま
で戻す。In such a structure, after cleaning the outer peripheral surface of the pipe 1, the flange member 2, the base 3 and the packing case 4 are sequentially fitted from the end side of the pipe 1, and then the first packing 5 is inserted. The seal portion 17 is elastically expanded and pressed into the end portion of the tube 1. Then, the packing 5 is returned to the end side of the pipe 1 together with the packing case 4 to the position where the second seal part 18 comes into contact with the end face of the mating pipe 21, and the end of the mouthpiece 3 abuts on the receiving part 14. And the flange member 2 is returned until its pressing portion 11 contacts the tapered spherical surface 6 of the mouthpiece 3.
【００１９】しかる後に、管１に嵌合されたフランジ部
材２と相手側の管２１のフランジ２３とを取付孔９，２
２の位置を合わせながら対向させ、取付孔９，２２にボ
ルト８を貫通させ、これらのボルト８の端部にナット２
５を螺合する。このとき、ボルト８とナット２５との締
付力によりフランジ部材２とフランジ２３との間は次第
に狭められ、フランジ部材２の押圧部１１が口金３のテ
ーパー球面６を押圧する。これにより、口金３は切欠１
２の幅を狭めながら縮径して爪７を管１の外周に食い込
ませた状態で押圧部１１と管１の外周面との間で楔状に
固定される。この場合、口金３の内周面に爪７に代わる
高摩擦面を形成しても、口金３を楔状に固定することが
可能である。これにより、管１に対してフランジ部材２
を口金３とともに固定することができる。したがって、
フランジ部材２を管１の端部に溶接する煩わしさを解消
することができる。また、ストレートの管１をそのまま
使用することができるため、配管工事を簡略化すること
が可能となる。さらに、管１の軸方向に口金３の位置を
変えることにより、接続すべき管１，２１の端部の間隔
に自由度をもたせることが可能となる。以上は請求項１
記載の発明に対応する効果である。Thereafter, the flange member 2 fitted to the pipe 1 and the flange 23 of the mating pipe 21 are attached to the mounting holes 9 and 2.
The two bolts 8 are made to face each other while aligning the positions of the two bolts, and the bolts 8 are passed through the mounting holes 9 and 22, and the nuts 2 are attached to the ends of these bolts 8.
Screw 5 together. At this time, the space between the flange member 2 and the flange 23 is gradually narrowed by the tightening force of the bolt 8 and the nut 25, and the pressing portion 11 of the flange member 2 presses the tapered spherical surface 6 of the base 3. As a result, the base 3 has the notch 1
While narrowing the width of 2 and reducing the diameter, the claw 7 is fixed in a wedge shape between the pressing portion 11 and the outer peripheral surface of the pipe 1 in a state where the pawl 7 bites into the outer periphery of the pipe 1. In this case, even if a high-friction surface that replaces the claw 7 is formed on the inner peripheral surface of the base 3, the base 3 can be fixed in a wedge shape. As a result, the flange member 2
Can be fixed together with the base 3. Therefore,
The trouble of welding the flange member 2 to the end of the pipe 1 can be eliminated. Moreover, since the straight pipe 1 can be used as it is, the piping work can be simplified. Furthermore, by changing the position of the mouthpiece 3 in the axial direction of the pipe 1, it becomes possible to give a degree of freedom to the interval between the ends of the pipes 1 and 21 to be connected. The above is Claim 1
This is an effect corresponding to the described invention.
【００２０】なお、口金３を軸心と平行に断面した状態
で側面から見た場合、口金３の外周面にはテーパー球面
６に代えて直線状に傾斜するテーパー面を形成してもよ
い。しかし、本実施例においては、口金３の外周面には
軸方向にも曲面をもって傾斜するテーパー球面６を形成
し、押圧部１１は直線的に傾斜する面であるため、テー
パー球面６と押圧部１１とは円を描く線で接触する。こ
れにより、管１及び口金３の軸心をフランジ部材２の軸
心に対して相対的に傾斜させることが可能である。本実
施例における傾斜許容角度は±４°である。このような
作用は、口金３の外周面とフランジ部材２の押圧部１１
との少なくとも何れか一方を直線状又は曲面状に傾斜さ
せ、この傾斜面に対して他方を線又は点接触状態で接触
する形状にしても得ることできる。この点においても配
管工事を容易にすることができる。また、フランジ部材
２の軸心に対する管１の軸心の傾斜が許容されると言う
ことは接続部に無理な力がかかることがなく、これによ
り、接続部の強度は極めて高い。When the die 3 is viewed from the side in a cross section parallel to the axis, the outer peripheral surface of the die 3 may be formed with a taper surface which is inclined linearly, instead of the tapered spherical surface 6. However, in this embodiment, the tapered spherical surface 6 is formed on the outer peripheral surface of the mouthpiece 3 so as to have a curved surface in the axial direction, and the pressing portion 11 is a linearly inclined surface. 11 is in contact with a line that draws a circle. Thereby, the axes of the pipe 1 and the base 3 can be inclined relative to the axis of the flange member 2. The allowable tilt angle in this embodiment is ± 4 °. Such an operation is performed by the outer peripheral surface of the base 3 and the pressing portion 11 of the flange member 2.
It is also possible to form a shape in which at least one of and is inclined linearly or curvedly, and the other is in line or point contact with the inclined surface. Also in this respect, piping work can be facilitated. In addition, the fact that the axis of the tube 1 can be tilted with respect to the axis of the flange member 2 does not apply an unreasonable force to the connecting portion, whereby the strength of the connecting portion is extremely high.
【００２１】また、口金３はフランジ部材２の押圧部１
１で押圧されたときに、縮径方向のみならず軸方向に押
圧力を受ける。しかし、本実施例においては、上述した
ように、フランジ部材２の内側に位置させてパッキン５
を囲繞するパッキンケース４を管１に嵌合し、パッキン
ケース４の一端に形成された受部１４を口金３の一端に
当接させ、他端に形成された当接部１５を相手側の管２
１の端面２４に当接させてフランジ部材２とフランジ２
３とを結合するようにしたので、配管工事中に管１の軸
方向に対するフランジ部材２及び口金３の位置のずれを
防止することができる。Further, the base 3 is a pressing portion 1 of the flange member 2.
When pressed by 1, the pressing force is applied not only in the diameter reducing direction but also in the axial direction. However, in the present embodiment, as described above, the packing 5 is placed inside the flange member 2.
The packing case 4 surrounding the is fitted into the pipe 1, the receiving portion 14 formed at one end of the packing case 4 is brought into contact with one end of the mouthpiece 3, and the abutting portion 15 formed at the other end is provided on the other side. Tube 2
1 and the flange member 2 and the flange 2
Since they are connected to each other, it is possible to prevent the positions of the flange member 2 and the base 3 from being displaced with respect to the axial direction of the pipe 1 during the plumbing work.
【００２２】さらに、パッキンケース４を用いた場合に
は、図１に示すように、フランジ部材２の端面よりパッ
キンケース４の当接部１５を突出させて相手側の管２１
の端面２４に当接させるが、口金３の軸方向の位置の動
きがパッキンケース４の受部１４により規制されるた
め、配管工事中に管１の軸方向に対するフランジ部材２
及び口金３の位置のずれが防止される。さらに、パッキ
ンケース４によりパッキン５に無理な圧力が作用する状
態が回避されるため、パッキン５を保護することが可能
である。以上、パッキンケース４を用いたことによる効
果は、請求項２記載の発明に対応する効果である。Further, when the packing case 4 is used, as shown in FIG. 1, the abutting portion 15 of the packing case 4 is projected from the end surface of the flange member 2 so that the mating pipe 21 is formed.
Of the flange member 2 with respect to the axial direction of the pipe 1 during the plumbing work because the axial movement of the mouthpiece 3 is restricted by the receiving portion 14 of the packing case 4.
And the displacement of the position of the base 3 is prevented. Furthermore, since the packing case 4 avoids a state in which an excessive pressure is applied to the packing 5, the packing 5 can be protected. As described above, the effect obtained by using the packing case 4 corresponds to the invention according to claim 2.
【００２３】さらに、パッキン５は筒状部１６と第一の
シール部１７との間及び筒状部１６と第二のシール部１
８との間に管路側に開口する環状の凹部１９，２０を有
するため、配管工事後に液体やガス等の流体を流したと
きに、その流体の圧力によりパッキン５が外側に膨満さ
れパッキンケース４の内面に密着する。また、このとき
の流体の圧力はパッキン５の凹部１９，２０の内面に作
用するため、管１の外周面に対するパッキン５の第一の
シール部１７の圧接力と、相手側の管２１の端面２４に
対する第二のシール部１８の圧接力とが高められる。こ
れにより、シール性をさらに高めることができる。これ
は請求項３記載の発明に対応する効果である。なお、管
１，２１に液体を流した場合、その液体はパッキン５の
外側に洩れることがないので、口金３やパッキンケース
４は鉄材等を用いても防錆処理は必ずしも必要としな
い。Further, the packing 5 is provided between the tubular portion 16 and the first seal portion 17 and between the tubular portion 16 and the second seal portion 1.
8 has annular recesses 19 and 20 that open to the pipeline side, the packing 5 is expanded to the outside by the pressure of the fluid when a fluid such as liquid or gas is flowed after the piping work, and the packing case 4 Adhere to the inner surface of In addition, since the fluid pressure at this time acts on the inner surfaces of the recesses 19 and 20 of the packing 5, the pressure contact force of the first seal portion 17 of the packing 5 against the outer peripheral surface of the tube 1 and the end surface of the mating tube 21. The pressing force of the second seal portion 18 against 24 is increased. Thereby, the sealing property can be further enhanced. This is an effect corresponding to the invention of claim 3. It should be noted that when a liquid is flown through the pipes 1 and 21, the liquid does not leak to the outside of the packing 5, so that the mouthpiece 3 and the packing case 4 are not necessarily required to be rustproof even if they are made of an iron material.
【００２４】次いで、本発明の第二の実施例を図３に基
づいて説明する。前記実施例と同一部分は同一符号を用
い説明も省略する。本実施例はバタフライ弁２６を介し
て管２１同士を接続する例である。このバタフライ弁２
６は、管１の内径と略同径の通孔２７が形成された管２
８と、通孔２７内に回動自在に設けられた円形の弁体２
９とよりなり、この弁体２９の軸３０は外部から操作す
るために管２８の外周から突出されている。Next, a second embodiment of the present invention will be described with reference to FIG. The same parts as those in the above-mentioned embodiment are designated by the same reference numerals and the description thereof will be omitted. This embodiment is an example in which pipes 21 are connected to each other via a butterfly valve 26. This butterfly valve 2
6 is a tube 2 in which a through hole 27 having a diameter substantially the same as the inner diameter of the tube 1 is formed.
8 and a circular valve body 2 rotatably provided in the through hole 27.
9, the shaft 30 of the valve element 29 is projected from the outer circumference of the pipe 28 for external operation.
【００２５】このような構成において、バタフライ弁２
６の両側に配列された管１の外周に、フランジ部材２と
口金３とパッキンケース４とパッキン５とを順次嵌合
し、バタフライ弁２６を間に対向するフランジ部材２の
取付孔９にボルト８を通し、前記実施例に示した配管工
事の要領でバタフライ弁２６の管２８の両端面３１に管
１を接続する。この場合、管１に嵌合されたパッキン５
の第二のシール部１８は管２８の端面３１に圧接され
る。この実施例においても、前記実施例で述べた効果を
得ることができる。In such a structure, the butterfly valve 2
6, the flange member 2, the mouthpiece 3, the packing case 4, and the packing 5 are sequentially fitted to the outer periphery of the pipe 1 arranged on both sides of the pipe 6, and the butterfly valve 26 is bolted to the mounting hole 9 of the flange member 2 facing each other. 8, the pipe 1 is connected to both end faces 31 of the pipe 28 of the butterfly valve 26 in the same manner as the piping work shown in the above embodiment. In this case, the packing 5 fitted to the pipe 1
The second seal portion 18 is pressed against the end surface 31 of the tube 28. Also in this embodiment, the effects described in the above embodiment can be obtained.
【００２６】[0026]
【発明の効果】請求項１記載の発明は、管の端部近傍の
外周面に圧接される環状の第一のシール部と相手側の管
の端面に圧接される環状の第二のシール部とを有するパ
ッキンと、縮径自在の環状の口金と、この口金を縮径方
向に押圧する押圧部と相手側の管の端面に結合される取
付部とを有するフランジ部材とを設けたので、管の端部
に遊嵌したフランジ部材と、他の管の端面とを結合した
ときに、口金が軸方向に変位するフランジ部材の押圧部
により押圧されて縮径するため、押圧部と管の外周との
間で口金が楔状に固定され、これにより、相手側の管に
接続される管にフランジ加工や溝加工を施すことなく、
管同士を高いシール性をもって接続することができ、こ
れにより、管の抜け止めを図ることができ、さらに、管
の軸方向に口金の位置を変えることにより、接続すべき
管の端部の間隔に自由度をもたせることが可能となり、
したがって、配管工事を簡略化することが可能となる。According to the first aspect of the present invention, an annular first seal portion press-contacted to the outer peripheral surface near the end portion of the pipe and an annular second seal portion press-contacted to the end surface of the mating pipe. Since a packing having, a ring-shaped mouthpiece capable of reducing the diameter, a flange member having a pressing portion for pressing the mouthpiece in the diameter-reducing direction and a mounting portion joined to the end surface of the mating pipe, When the flange member loosely fitted to the end of the pipe and the end face of another pipe are joined, the cap is pressed by the pressing portion of the flange member that is displaced in the axial direction to reduce the diameter. The mouthpiece is fixed in a wedge shape between the outer circumference and the pipe connected to the mating pipe without flange processing or groove processing.
The pipes can be connected with a high sealing property, which prevents the pipes from coming off, and by changing the position of the mouthpiece in the axial direction of the pipes, the gap between the ends of the pipes to be connected. It will be possible to give freedom to
Therefore, the piping work can be simplified.
【００２７】請求項２記載の発明は、請求項１記載の発
明において、フランジ部材の内側に遊嵌されてパッキン
の外周を囲繞する環状壁と、この環状壁の一端に連続し
て形成された受部と、環状壁の他端に連続して形成され
た当接部とを有する硬質のパッキンケースを設けたの
で、パッキンケースの当接部を相手側の管の端面に当接
させ、口金の端面をパッキンケースの受部に当接させた
状態で、管に嵌合したフランジ部材を相手側の管の端面
に結合するときに、口金の軸方向の位置の動きをパッキ
ンケースで規制することができ、これにより、配管工事
中に管の軸方向に対するフランジ及び口金の位置のずれ
を防止することができ、また、パッキンケースによりパ
ッキンに無理な圧力が作用する状態を回避することがで
きる。According to a second aspect of the present invention, in the first aspect of the present invention, an annular wall that is loosely fitted inside the flange member and surrounds the outer periphery of the packing is formed continuously with one end of the annular wall. Since the hard packing case having the receiving part and the contact part continuously formed at the other end of the annular wall is provided, the contact part of the packing case is brought into contact with the end face of the mating pipe, When the flange member fitted to the pipe is connected to the end face of the mating pipe with the end face of the contacting abutment part of the packing case, the axial movement of the mouthpiece is restricted by the packing case. As a result, it is possible to prevent displacement of the positions of the flange and the mouthpiece with respect to the axial direction of the pipe during the piping work, and it is possible to avoid a state where excessive pressure acts on the packing due to the packing case. .
【００２８】請求項３記載の発明は、請求項１又は２記
載の発明において、パッキンは筒状部と第一のシール部
との間及び筒状部と第二のシール部との間に管路側に開
口する環状の凹部を有するので、配管工事後に液体やガ
ス等の流体を流したときに、その流体の圧力をパッキン
の凹部の内面に作用させることができ、これにより、管
の外周面に対するパッキンの第一のシール部の圧接力
と、相手側の管の端面に対するパッキンの第二のシール
部の圧接力とを高め、シール性をさらに高めることがで
きる。According to a third aspect of the present invention, in the invention according to the first or second aspect, the packing includes a pipe between the tubular portion and the first seal portion and between the tubular portion and the second seal portion. Since it has an annular recess that opens to the road side, when a fluid such as a liquid or gas flows after piping work, the pressure of the fluid can act on the inner surface of the recess of the packing, which allows the outer peripheral surface of the pipe to be treated. The pressure contact force of the first seal portion of the packing with respect to and the pressure contact force of the second seal portion of the packing with respect to the end surface of the mating tube can be increased to further improve the sealing property.
【図１】本発明の第一の実施例を示す縦断側面図であ
る。FIG. 1 is a vertical sectional side view showing a first embodiment of the present invention.
【図２】図１のパッキンを管から外した自由状態を示す
縦断側面図である。FIG. 2 is a vertical sectional side view showing a free state in which the packing of FIG. 1 is removed from a pipe.
【図３】本発明の第二の実施例を示す縦断側面図であ
る。FIG. 3 is a vertical sectional side view showing a second embodiment of the present invention.
【図４】第一の従来例を示す縦断側面図である。FIG. 4 is a vertical side view showing a first conventional example.
【図５】第二の従来例を示す縦断側面図である。FIG. 5 is a vertical sectional side view showing a second conventional example.
【図６】第三の従来例を示す縦断側面図である。FIG. 6 is a vertical sectional side view showing a third conventional example.
【図７】第四の従来例を示す縦断側面図である。FIG. 7 is a vertical sectional side view showing a fourth conventional example.
１ 管 ２ フランジ部材 ３ 口金 ４ パッキンケース ５ パッキン ９ 取付部 １１ 押圧部 １３ 環状壁 １４ 受部 １５ 当接部 １６ 筒状部 １７ 第一のシール部 １８ 第二のシール部 １９，２０ 凹部 ２１ 管 ２４ 端面 ２８ 管 ３１ 端面 DESCRIPTION OF SYMBOLS 1 pipe 2 flange member 3 mouthpiece 4 packing case 5 packing 9 mounting part 11 pressing part 13 annular wall 14 receiving part 15 abutting part 16 tubular part 17 first sealing part 18 second sealing part 19, 20 recess 21 pipe 24 end face 28 pipe 31 end face
Claims (3)
部近傍の外周面に圧接される環状の第一のシール部が連
続して形成されるとともに前記管を接続すべき相手側の
管の端面に圧接される環状の第二のシール部が前記筒状
部の他端に連続して形成された屈撓自在のパッキンと、
このパッキンに隣接されて前記管の外周面に嵌合される
縮径自在の環状の口金と、この口金の外周面を縮径方向
に押圧する押圧部と相手側の前記管の端面に結合される
取付部とを有するフランジ部材とよりなることを特徴と
する管継手装置。1. A ring-shaped first seal portion, which is in pressure contact with an outer peripheral surface near the end of the pipe, is continuously formed at one end of a tubular portion surrounding the pipe, and the other end to which the pipe is to be connected. A flexible packing in which an annular second seal portion press-contacted to the end face of the side tube is formed continuously with the other end of the tubular portion,
Adjacent to this packing, a ring-shaped mouthpiece having a diameter that can be freely fitted is fitted to the outer peripheral surface of the pipe, a pressing portion that presses the outer peripheral surface of the mouthpiece in the diameter-reducing direction, and an end surface of the mating pipe. A pipe joint device comprising: a flange member having a mounting portion.
記パッキンの外周を囲繞する環状壁と、この環状壁の一
端に連続して形成されて前記口金の前記管の端部側の端
面を支える受部と、前記環状壁の他端に連続して形成さ
れて相手側の前記管の端面に当接される当接部とを有し
て硬質材料により形成されたパッキンケースを設けたこ
とを特徴とする請求項１記載の管継手装置。2. An annular wall which is loosely fitted inside the flange member and surrounds the outer periphery of the packing, and an end face of the mouthpiece which is formed continuously with one end of the annular wall on the end side of the pipe. A packing case formed of a hard material is provided, which has a support receiving portion and an abutting portion that is formed continuously with the other end of the annular wall and abuts against the end surface of the mating pipe. The pipe joint device according to claim 1.
シール部との間及び前記筒状部と前記第二のシール部と
の間に管路側に開口する環状の凹部を有することを特徴
とする請求項１又は２記載の管継手装置。3. The packing has an annular recess that opens toward the conduit side between the tubular portion and the first seal portion and between the tubular portion and the second seal portion. The pipe joint device according to claim 1 or 2, which is characterized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6245927A JP2670239B2 (en) | 1994-10-12 | 1994-10-12 | Pipe fitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6245927A JP2670239B2 (en) | 1994-10-12 | 1994-10-12 | Pipe fitting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08109988A true JPH08109988A (en) | 1996-04-30 |
| JP2670239B2 JP2670239B2 (en) | 1997-10-29 |
Family
ID=17140926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6245927A Expired - Fee Related JP2670239B2 (en) | 1994-10-12 | 1994-10-12 | Pipe fitting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2670239B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100740166B1 (en) * | 2005-10-10 | 2007-07-16 | 조정래 | A structure of bypass pipe |
| JP2014190512A (en) * | 2013-03-28 | 2014-10-06 | Sekisui Chem Co Ltd | Joint structure of resin pipe |
| KR102190003B1 (en) * | 2020-04-03 | 2020-12-11 | 심인철 | Joint for pipe connection |
| KR102195335B1 (en) * | 2020-04-03 | 2020-12-24 | 김굉선 | Joint for pipe connection |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55165390A (en) * | 1979-06-08 | 1980-12-23 | Kawachi Aluminum Kogyo Kk | Expansible gate door |
-
1994
- 1994-10-12 JP JP6245927A patent/JP2670239B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55165390A (en) * | 1979-06-08 | 1980-12-23 | Kawachi Aluminum Kogyo Kk | Expansible gate door |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100740166B1 (en) * | 2005-10-10 | 2007-07-16 | 조정래 | A structure of bypass pipe |
| JP2014190512A (en) * | 2013-03-28 | 2014-10-06 | Sekisui Chem Co Ltd | Joint structure of resin pipe |
| KR102190003B1 (en) * | 2020-04-03 | 2020-12-11 | 심인철 | Joint for pipe connection |
| KR102195335B1 (en) * | 2020-04-03 | 2020-12-24 | 김굉선 | Joint for pipe connection |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2670239B2 (en) | 1997-10-29 |
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