JP7444700B2

JP7444700B2 - Resin pipe connection device

Info

Publication number: JP7444700B2
Application number: JP2020090506A
Authority: JP
Inventors: 紗弓畑野; 賢司水川; 真一西山; 拓朗山口; 総介東
Original assignee: Sekisui Chemical Co Ltd
Current assignee: Sekisui Chemical Co Ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2024-03-06
Anticipated expiration: 2040-05-25
Also published as: JP2021188621A

Description

本発明は、一端部にフランジ部を有する２本の樹脂管を接続する装置に関する。 The present invention relates to a device for connecting two resin pipes each having a flange at one end.

施工現場で融着作業をせずに樹脂管同士を接続することが求められる場合には、工場でフランジ部付きの短管を樹脂管本体にバット融着することにより、端部にフランジ部を有する樹脂管を製造する。フランジ部は先端側に樹脂管の管軸と直交する突き合わせ面を有し、反対側にテーパ面を有している。施工現場では接続装置を用い、２本の樹脂管のフランジ部の突き合わせ面を突き合わせるようにして接続する。 If it is required to connect resin pipes without performing fusion work at the construction site, a short pipe with a flange can be butt-fused to the resin pipe body at the factory, allowing the flange to be attached to the end. Manufacture resin pipes with The flange portion has an abutting surface perpendicular to the tube axis of the resin tube on the distal end side, and a tapered surface on the opposite side. At the construction site, a connecting device is used to connect the two resin pipes so that the abutting surfaces of the flanges of the pipes butt against each other.

特許文献１に示す接続装置は、上下一対の分割体と、一対の分割体の一端部を互いに回動可能に連結するヒンジ手段と、一対の分割体の他端部同士を近付けるように締め付ける締結手段とを備えている。一対の分割体は、内周に半円をなして延びる嵌合溝をそれぞれ有している。嵌合溝の管軸方向両側には上記フランジ部のテーパ面と等しいテーパ角をなすテーパ面が形成されている。 The connection device disclosed in Patent Document 1 includes a pair of upper and lower divided bodies, a hinge means that rotatably connects one end of the pair of divided bodies to each other, and a fastening mechanism that tightens the other ends of the pair of divided bodies to bring them closer together. and means. Each of the pair of divided bodies has a fitting groove extending semicircularly on the inner periphery. Tapered surfaces having the same taper angle as the tapered surface of the flange portion are formed on both sides of the fitting groove in the tube axis direction.

特許文献１の接続装置による樹脂管の接続工程を簡単に説明する。一対の分割体を開き状態にし、２本の樹脂管のフランジ部を下側の分割体の嵌合溝に乗せる。次に、上側の分割体を閉じ方向に回動させて、上側の分割体の嵌合溝に２本の樹脂管のフランジ部を緩く嵌合させる。最後に、締結手段により一対の分割体の他端部同士を互いに近づけるように締め付ける。これにより、一対の分割体の嵌合溝の両側のテーパ面と２本の樹脂管のフランジ部のテーパ面を介して、上記締め付け力が２本の樹脂管のフランジ部同士を近づける軸方向の力に変換される。その結果、フランジ部の突き合わせ面が突き合わされた状態で２本の樹脂管が接続される。 The process of connecting resin pipes using the connecting device of Patent Document 1 will be briefly described. The pair of divided bodies are opened, and the flanges of the two resin pipes are placed on the fitting grooves of the lower divided body. Next, the upper divided body is rotated in the closing direction to loosely fit the flanges of the two resin pipes into the fitting grooves of the upper divided body. Finally, the other ends of the pair of divided bodies are tightened by the fastening means so as to bring them closer to each other. As a result, the tightening force is applied in the axial direction to bring the flanges of the two resin tubes closer to each other via the tapered surfaces on both sides of the fitting groove of the pair of split bodies and the tapered surfaces of the flanges of the two resin tubes. converted into power. As a result, the two resin pipes are connected with the abutting surfaces of the flanges abutted against each other.

２本の樹脂管の互いに対向する突き合わせ面の一方には環状の収容溝が形成されており、この収容溝にはシールリングが嵌められている。このシールリングは、一対の分割体が締結手段により締め付けられた時に他方の突き合わせ面に密着し、これにより２本の樹脂管の突き合わせ面間がシールされる。 An annular housing groove is formed in one of the mutually opposing abutting surfaces of the two resin tubes, and a seal ring is fitted into this housing groove. When the pair of divided bodies are tightened by the fastening means, this seal ring comes into close contact with the abutting surfaces of the other, thereby sealing the abutting surfaces of the two resin tubes.

特許５７４０１２３号公報Patent No. 5740123

特許文献１の接続装置では、シールリングが収容溝から外れた状態で締結手段の締付により樹脂管の接続を完了した場合、シール不良により樹脂管接合部から漏水が生じてしまうが、このシールの良否を簡単に判別する手段がなかった。 In the connection device of Patent Document 1, if the connection of the resin pipes is completed by tightening the fastening means with the seal ring removed from the accommodation groove, water leaks from the resin pipe joint due to a seal failure. There was no way to easily determine whether the product was good or bad.

上記課題を解決するために、本発明は、突き合わせ面とテーパ面を有する環状のフランジ部が一端部に形成された２本の樹脂管を接続する接続装置において、
第１、第２分割体と、前記第１、第２分割体の一端部を互いに樹脂管の管軸と直交する平面に沿って回動可能に連結するヒンジ手段と、前記第１、第２分割体の他端部同士を近付けるように締め付ける締結手段と、を備え、前記第１、第２分割体は、内周面に円弧状に延びる嵌合溝を有し、前記嵌合溝はその両側にテーパ面を有し、前記締結手段による締め付け時に、前記嵌合溝の前記テーパ面が２本の樹脂管の前記フランジ部の前記テーパ面を押圧することにより、前記第１、第２分割体の前記他端部の対向面が互いに近づくとともに、２本の樹脂管の前記フランジ部の前記突き合わせ面が互いに突き合わされ、一方の樹脂管の前記突き合わせ面の環状の収容溝に収容されたシールリングが、他方の樹脂管の前記突き合わせ面に密着して、２本の樹脂管の前記突き合わせ面間がシールされるようになっており、
前記第１分割体の前記他端部の側面には、第１係合部が形成され、前記第２分割体の前記他端部の側面には、第２係合部が形成され、前記シールリングが前記収容溝に正常に収容された状態で２本の樹脂管が接続された時に、前記第１、第２係合部が弾性変形を伴って係合されることを特徴とする。 In order to solve the above problems, the present invention provides a connection device for connecting two resin pipes each having an annular flange portion formed at one end thereof and having an abutting surface and a tapered surface.
first and second divided bodies; hinge means for rotatably connecting one end of the first and second divided bodies to each other along a plane perpendicular to the tube axis of the resin tube; fastening means for tightening the other ends of the divided bodies so as to bring them closer together; the first and second divided bodies have fitting grooves extending in an arc shape on their inner circumferential surfaces; Both sides have tapered surfaces, and when the fastening means tightens, the tapered surfaces of the fitting groove press the tapered surfaces of the flanges of the two resin pipes, thereby forming the first and second divisions. The opposing surfaces of the other ends of the bodies approach each other, and the abutting surfaces of the flanges of the two resin tubes abut each other, and the seal is accommodated in the annular housing groove of the abutting surface of one of the resin tubes. The ring is in close contact with the abutting surface of the other resin pipe, so that the abutting surface of the two resin pipes is sealed,
A first engaging portion is formed on a side surface of the other end of the first divided body, a second engaging portion is formed on a side surface of the other end of the second divided body, and the seal When the two resin pipes are connected with the ring normally housed in the housing groove, the first and second engaging portions are engaged with each other with elastic deformation.

上記構成によれば、第１、第２分割体にそれぞれ設けられた第１、第２係合部が互いに係合されるか否かを確かめることにより、シールリングが収容溝に正常に収容されてシールが良好な状態にあるか、シールリングが収容溝から外れてシール不良が生じているかを簡単に判別することができる。 According to the above configuration, the seal ring is normally accommodated in the accommodation groove by checking whether the first and second engaging portions provided on the first and second divided bodies are engaged with each other. It is possible to easily determine whether the seal is in good condition or whether the seal ring has come off the housing groove and a seal failure has occurred.

好ましくは、前記第１係合部と前記第２係合部は、前記第１、第２分割体の前記他端部において、樹脂管の管軸方向を向く側面に形成されている。
上記構成によれば、管軸方向からシールの良否判別を行うことができる。 Preferably, the first engaging portion and the second engaging portion are formed on a side surface facing the tube axis direction of the resin tube at the other end portions of the first and second divided bodies.
According to the above configuration, it is possible to determine the quality of the seal from the tube axis direction.

好ましくは、前記第１、第２係合部は、前記第１、第２分割体の前記締結手段による締結位置から遠く、前記第１、第２分割体における前記対向面と前記内周面とが交差する角部に近い位置に形成されている。
上記構成によれば、締結手段の締結力の影響を小さくして、正確シール良品の判別を行うことができる。 Preferably, the first and second engaging portions are far from a fastening position of the first and second divided bodies by the fastening means, and are located between the opposing surfaces and the inner circumferential surfaces of the first and second divided bodies. It is formed near the corner where the two intersect.
According to the above configuration, the influence of the fastening force of the fastening means can be reduced, and it is possible to accurately determine whether the seal is good or not.

具体的態様では、前記第１係合部は、前記第１分割体の側面から突出する係合凸部からなり、前記係合凸部には、前記第１、第２分割体の前記他端部の前記対向面の対向方向に貫通する挿通穴が形成され、前記第２係合部は、前記係合凸部に向かって延びる係合爪からなり、前記シールリングが前記収容溝に正常に収容された状態で２本の樹脂管が接続された時に、前記係合爪の先端部の爪部が前記係合凸部の前記挿通穴を通過して前記係合凸部に係合される。
上記具体的態様において、好ましくは、この前記第１分割体の前記係合凸部において前記第２分割体の反対側の面が第１係合面として提供され、前記係合爪の前記爪部はテーパ面と急峻面とを有し、前記急峻面が第２係合面として提供され、前記シールリングが前記収容溝に正常に収容された状態で２本の樹脂管が接続された時に、前記第１、第２係合面が互いに対向するようになっており、前記第２分割体の前記対向面と前記係合爪の第２係合面との間の距離をＤａとし、前記第１分割体の前記対向面と前記係合凸部の前記第１係合面との間の距離をＤｂとした時、Ｄａ－Ｄｂ≦２ｍｍを満足する。
好ましくは、上記第１、第２分割体がガラス繊維入りの樹脂により形成されている。 In a specific aspect, the first engaging portion includes an engaging protrusion protruding from a side surface of the first divided body, and the engaging convex portion includes the other ends of the first and second divided bodies. An insertion hole is formed that penetrates in the opposing direction of the opposing surface of the part, and the second engaging part includes an engaging claw extending toward the engaging convex part, and the seal ring is normally inserted into the accommodation groove. When the two resin pipes are connected in the housed state, the claw at the tip of the engagement claw passes through the insertion hole of the engagement protrusion and is engaged with the engagement protrusion. .
In the above-mentioned specific aspect, preferably, the surface of the engaging convex portion of the first divided body opposite to the second divided body is provided as a first engaging surface, and the claw portion of the engaging claw has a tapered surface and a steep surface, the steep surface is provided as a second engagement surface, and when the two resin pipes are connected with the seal ring normally accommodated in the accommodation groove, The first and second engaging surfaces face each other, the distance between the opposing surface of the second divided body and the second engaging surface of the engaging claw is Da, and the distance between the opposing surface of the second divided body and the second engaging surface of the engaging claw is When the distance between the opposing surface of the one-piece body and the first engaging surface of the engaging protrusion is Db, Da-Db≦2 mm is satisfied.
Preferably, the first and second divided bodies are made of resin containing glass fiber.

本発明によれば、樹脂管接合部におけるシール良否の判別を簡単に行うことができる。 According to the present invention, it is possible to easily determine whether the seal at the resin pipe joint is good or bad.

本発明の一実施形態に係る樹脂管の接続装置を樹脂管の接続が完了した状態で示す斜視図であり、接続装置および樹脂管の一部を切り欠いて示す。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a resin pipe connecting device according to an embodiment of the present invention in a state where the resin pipes have been connected, with a portion of the connecting device and the resin pipe cut away. 上記接続装置の上下一対の分割体を分離した状態で示す斜視図であり、一対の分割体はそれぞれ幅方向に半分に切断され、見る方向が異なっている。It is a perspective view showing a pair of upper and lower divided bodies of the above-mentioned connecting device in a separated state, each of the pair of divided bodies being cut in half in the width direction and viewed from different directions. 上記接続装置による樹脂管の接続工程を順に示す横断面図であり、（Ａ）は接続工程の途中の状態を示し、（Ｂ）は接続工程が完了した状態を示す。It is a cross-sectional view which shows the connection process of the resin pipe by the said connection apparatus in order, (A) shows the state in the middle of a connection process, and (B) shows the state where the connection process is completed. 上記接続装置による樹脂管の接続工程を順に示す縦断面図であり、（Ａ）は接続工程の途中の状態を示し、（Ｂ）は接続工程が完了した状態を示す。It is a longitudinal cross-sectional view which shows the connection process of the resin pipe by the said connection apparatus in order, (A) shows the state in the middle of a connection process, and (B) shows the state where the connection process is completed. シールリングが正常にセットされた状態で樹脂管の接続が完了した時の上記接続装置を示す正面図であり、樹脂管と締結手段を省略して示す。It is a front view showing the above-mentioned connection device when connection of a resin pipe is completed in a state where a seal ring is set normally, and the resin pipe and a fastening means are omitted. 図５におけるVI-VI線に沿う断面図である。6 is a cross-sectional view taken along the line VI-VI in FIG. 5. FIG.

以下、本発明の一実施形態を図面を参照しながら説明する。
樹脂管の構成
最初に図１、図４を参照しながら接続対象となる樹脂管１，２について説明する。樹脂管１，２はポリエチレン等の樹脂からなり、一端部に環状のフランジ部１ａ，２ａを有している。樹脂管１，２は、上記フランジ部１ａ，２ａを有する短管と長尺の樹脂管本体とをバット融着することにより得られる。フランジ部１ａ，２ａの先端面が管軸Ｌと直交する突き合わせ面１ｘ、２ｘとなっており、反対側の面がテーパ面１ｙ、２ｙとなっている。一方の樹脂管１のフランジ部１ａの突き合わせ面１ｘには、環状の収容溝１ｚが形成され、この収容溝１ｚにシールリング３が嵌められている。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
Composition of resin tube
First, the resin pipes 1 and 2 to be connected will be explained with reference to FIGS. 1 and 4. The resin pipes 1 and 2 are made of resin such as polyethylene and have annular flanges 1a and 2a at one end. The resin pipes 1 and 2 are obtained by butt welding a short pipe having the flange portions 1a and 2a and a long resin pipe main body. The tip surfaces of the flange portions 1a, 2a are abutting surfaces 1x, 2x perpendicular to the tube axis L, and the opposite surfaces are tapered surfaces 1y, 2y. An annular housing groove 1z is formed in the abutting surface 1x of the flange portion 1a of one resin pipe 1, and a seal ring 3 is fitted into this housing groove 1z.

樹脂管１，２の一端部内周には、短筒形状をなすインコア４がそれぞれ配置されている。インコア４はＳＵＳ３０４等のステンレス鋼からなり、その一端には径方向、外方向に突出する環状の鍔４ａが形成されている。この鍔４ａが樹脂管１，２の先端内周に形成された環状の凹部１ｂ、２ｂに係合することにより、インコア４は軸方向の移動が制限された状態で、樹脂管１，２に装着されている。鍔４ａは凹部１ｂ、２ｂに収容されているため、後述するフランジ部１ａ，２ａの突き合わせの支障にはならない。 In-cores 4 each having a short cylindrical shape are arranged on the inner periphery of one end of the resin pipes 1 and 2, respectively. The in-core 4 is made of stainless steel such as SUS304, and has an annular collar 4a projecting radially and outwardly at one end thereof. By engaging the collar 4a with the annular recesses 1b and 2b formed on the inner periphery of the tips of the resin tubes 1 and 2, the in-core 4 is inserted into the resin tubes 1 and 2 while its axial movement is restricted. It is installed. Since the collar 4a is accommodated in the recesses 1b and 2b, it does not interfere with the butting of the flange portions 1a and 2a, which will be described later.

接続装置の基本構成
次に、上記樹脂管１，２を接続するための接続装置５の基本構成について、図１～図４を参照しながら説明する。接続装置５は、上下一対の分割体すなわち上側分割体１０（第１分割体）と下側分割体２０（第２分割体）を備えている。
分割体１０、２０は、例えばガラス繊維強化樹脂（ナイロン、ポリプロピレン、ポリアセタール等）からなり、それぞれ略半円筒形状の本体部１１、２１を有している。本体部１１、２１の内径は樹脂管１，２の外径と略等しい。
分割体１０，２０の本体部１１，２１の管軸Ｌ方向の両側面は、管軸Ｌと直交している。 Basic Configuration of Connecting Device Next, the basic configuration of the connecting device 5 for connecting the resin pipes 1 and 2 will be explained with reference to FIGS. 1 to 4. The connecting device 5 includes a pair of upper and lower divided bodies, that is, an upper divided body 10 (first divided body) and a lower divided body 20 (second divided body).
The divided bodies 10 and 20 are made of, for example, glass fiber-reinforced resin (nylon, polypropylene, polyacetal, etc.), and have substantially semi-cylindrical main bodies 11 and 21, respectively. The inner diameters of the main bodies 11 and 21 are approximately equal to the outer diameters of the resin tubes 1 and 2.
Both side surfaces of the main bodies 11 and 21 of the divided bodies 10 and 20 in the direction of the tube axis L are orthogonal to the tube axis L.

分割体１０，２０の本体部１１，２１は、後述するように樹脂管１，２の接続を完了した状態でその両端部の面が互いに対向している。以下、この面を端部対向面と言う。本体部１１，２１は、完全な半円筒より周方向寸法が短い。すなわち、上側分割体１０の本体部１１の端部対向面１１ａ，１１ｂは、本体部１１の内周の半径中心を通る平面より僅かに後退しており、この平面と平行をなしている。同様に、下側分割体２０の本体部２１の端部対向面２１ａ，２１ｂは、本体部２１の内周の半径中心を通る平面より僅かに後退しており、この平面と平行をなしている。 The main bodies 11 and 21 of the divided bodies 10 and 20 have opposite end surfaces facing each other when the resin pipes 1 and 2 are connected, as will be described later. Hereinafter, this surface will be referred to as the end facing surface. The main body portions 11, 21 have a circumferential dimension shorter than that of a complete semi-cylindrical cylinder. That is, the opposing end surfaces 11a and 11b of the main body 11 of the upper divided body 10 are slightly set back from a plane passing through the radial center of the inner circumference of the main body 11, and are parallel to this plane. Similarly, the opposing end surfaces 21a and 21b of the main body 21 of the lower divided body 20 are slightly set back from a plane passing through the radial center of the inner circumference of the main body 21, and are parallel to this plane. .

分割体１０，２０の本体部１１，２１の内周面には、周方向に略半円をなして延びる嵌合溝１２，２２が形成されている。嵌合溝１２，２２の菅軸方向両側にはテーパ面１２ａ、２２ａが形成されている。このテーパ面１２ａ、２２ａのテーパ角度は、樹脂管１，２のフランジ部１ａ，２ａのテーパ面１ｙ、２ｙと等しい。嵌合溝１２，２２の断面形状は、後述するようにフランジ部１ａ，２ａの突き合わせ面１ｘ、２ｘが接した状態でのフランジ部１ａ、２ａの断面形状と略等しい。
なお、本体部１１，２１の外周には、周方向に延びる肉盗み凹部（本体部１１の肉盗み凹部１３のみ示す）、が形成されている。 Fitting grooves 12 and 22 are formed in the inner circumferential surfaces of the main bodies 11 and 21 of the divided bodies 10 and 20, respectively, and extend in a substantially semicircular manner in the circumferential direction. Tapered surfaces 12a and 22a are formed on both sides of the fitting grooves 12 and 22 in the axial direction. The taper angles of the tapered surfaces 12a, 22a are equal to the tapered surfaces 1y, 2y of the flange portions 1a, 2a of the resin pipes 1, 2. The cross-sectional shapes of the fitting grooves 12 and 22 are approximately equal to the cross-sectional shapes of the flange portions 1a and 2a when the abutting surfaces 1x and 2x of the flange portions 1a and 2a are in contact with each other, as will be described later.
Note that a thinning recess (only the thinning recess 13 of the main body 11 is shown) extending in the circumferential direction is formed on the outer periphery of the main body portions 11 and 21.

上側分割体１０の本体部１１の一端部には、係合部１５が本体部１１と一体をなして設けられている。この係合部１５は、本体部１１の一端部から径方向外側に突出する突出部１５ａと、この突出部１５ａと直交して端部対向面１１ａを超えて下方に（下側分割体２０に向かって）延びる延出部１５ｂと、を有している。 An engaging portion 15 is provided at one end of the main body 11 of the upper divided body 10 so as to be integral with the main body 11 . The engaging portion 15 includes a protruding portion 15a that protrudes radially outward from one end of the main body portion 11, and a protruding portion 15a that is perpendicular to the protruding portion 15a and extends downward (to the lower divided body 20) beyond the end facing surface 11a. 15b.

上側分割体１０の係合部１５には係合穴１６が形成されている。この係合穴１６は、延出部１５ｂに形成され径方向に貫通する主穴部１６ａと、突出部１５ａに形成され主穴部１６ａに連なる逃がし凹部１６ｂとを有している。
主穴部１６ａは略矩形をなし、係合穴１６の下側の面１６ｘと本体部１１の端部対向面１１ａの延長面との間を占めている。この下側の面１６ｘは後述するように荷重受面として提供される。
逃がし凹部１６ｂは、端部対向面１１ａの延長面より上方（下側分割体２０の反対側）に位置しており、径方向外側が開放されている。逃がし凹部１６ｂの横寸法は、主穴部１６ａの横寸法と等しい。 An engagement hole 16 is formed in the engagement portion 15 of the upper divided body 10 . The engagement hole 16 has a main hole 16a formed in the extension 15b and penetrating in the radial direction, and a relief recess 16b formed in the protrusion 15a and connected to the main hole 16a.
The main hole 16a has a substantially rectangular shape and occupies a space between the lower surface 16x of the engagement hole 16 and the extended surface of the end facing surface 11a of the main body 11. This lower surface 16x is provided as a load receiving surface as described later.
The escape recess 16b is located above the extended surface of the end facing surface 11a (on the opposite side of the lower divided body 20), and is open on the outside in the radial direction. The lateral dimension of the escape recess 16b is equal to the lateral dimension of the main hole 16a.

下側分割体２０の本体部２１の一端部には、径方向外方向に延びる係合突起２５が本体部２１と一体に形成されている。係合突起２５の断面形状は矩形をなし、その上面は本体部２１の端部対向面２１ａと面一をなしている。係合突起２５の縦寸法、横寸法は、上側分割体１０の係合穴１６の主穴部１６ａの縦寸法、横寸法より若干短い。
後述するように下側分割体２０の係合突起２５が上側分割体１０の係合穴１６に挿入されることにより、ヒンジ手段Ｈが構成される。このヒンジ手段Ｈは、上側分割体１０を下側分割体２０に対し、樹脂管１，２の管軸Ｌと直交する平面に沿って相対回動可能に連結する。 An engagement protrusion 25 extending radially outward is formed integrally with the main body 21 at one end of the main body 21 of the lower divided body 20 . The cross-sectional shape of the engaging protrusion 25 is rectangular, and its upper surface is flush with the end facing surface 21a of the main body portion 21. The vertical and horizontal dimensions of the engagement protrusion 25 are slightly shorter than the vertical and horizontal dimensions of the main hole portion 16a of the engagement hole 16 of the upper divided body 10.
As will be described later, the engagement protrusion 25 of the lower divided body 20 is inserted into the engagement hole 16 of the upper divided body 10, thereby forming the hinge means H. This hinge means H connects the upper divided body 10 to the lower divided body 20 so as to be relatively rotatable along a plane orthogonal to the tube axis L of the resin tubes 1 and 2.

分割体１０、２０の本体部１１，２１の他端部には、径方向外側に突出する受部１８、２８が、それぞれ本体部１１，２１と一体をなして形成されている。受部１８の下面は本体部１１の端部対向面１１ｂと面一をなし、受部２８の上面は本体部２１の端部対向面２１ｂと面一をなしている。受部１８、２８には、貫通穴１８ａ，２８ａが形成されている。受部２８の下面には、貫通穴２８ａの両側に位置する一対の回り止め用凸部２９が形成されている。
図３（Ｂ）に示すように、上記受部１８，２８を締結するための締結手段３０は、ボルト３１とナット３２を有している。 At the other ends of the main bodies 11 and 21 of the divided bodies 10 and 20, receiving parts 18 and 28 that protrude radially outward are formed integrally with the main bodies 11 and 21, respectively. The lower surface of the receiving portion 18 is flush with the end facing surface 11b of the main body portion 11, and the upper surface of the receiving portion 28 is flush with the end facing surface 21b of the main body portion 21. Through holes 18a, 28a are formed in the receiving parts 18, 28. A pair of anti-rotation protrusions 29 are formed on the lower surface of the receiving portion 28, located on both sides of the through hole 28a.
As shown in FIG. 3(B), a fastening means 30 for fastening the receiving parts 18 and 28 includes a bolt 31 and a nut 32.

接続装置による樹脂管の接続工程
上記接続装置５による樹脂管１，２の接続工程について説明する。図３（Ａ）、図４（Ａ）に示すように、最初に樹脂管１，２のフランジ部１ａ，２ａを、突き合わせ面１ｘの収容溝１ｚに収容されたシールリング３が樹脂管２の突き合わせ面２ｘに軽く接する程度に近づけた状態で、下側分割体２０に乗せる。フランジ部１ａ，２ａが嵌合溝２２に位置合わせされ、その一部が嵌合溝２２に収容される。 Process of connecting resin pipes using the connecting device The process of connecting the resin pipes 1 and 2 using the connecting device 5 will be described. As shown in FIGS. 3(A) and 4(A), the seal ring 3 accommodated in the receiving groove 1z of the abutting surface 1x first attaches the flange portions 1a and 2a of the resin tubes 1 and 2 to the resin tube 2. Place it on the lower divided body 20 while bringing it close enough to lightly touch the abutting surface 2x. The flange portions 1a and 2a are aligned with the fitting groove 22, and a portion thereof is accommodated in the fitting groove 22.

次に、上側分割体１０を下側分割体２０に対して傾斜姿勢のまま横方向から近づけ、係合部１５の係合穴１６に係合突起２５を挿入する。この際、係合突起２５の先端部の一部は係合穴１６の主穴部１６ａから外れるが、逃がし凹部１６ｂに受け入れることができる。そのため、係合突起２５が係合部１５と干渉せずに、上側分割体１０はフランジ部１ａ，２ａに深く被せることができる。 Next, the upper divided body 10 is brought closer to the lower divided body 20 from the side in an inclined position, and the engagement protrusion 25 is inserted into the engagement hole 16 of the engagement portion 15 . At this time, a portion of the tip of the engagement protrusion 25 comes off from the main hole 16a of the engagement hole 16, but can be received in the escape recess 16b. Therefore, the upper divided body 10 can be deeply placed over the flange parts 1a and 2a without the engagement protrusion 25 interfering with the engagement part 15.

具体的に説明すると、係合突起２５が係合穴１６に挿入されてヒンジ手段Ｈが構成された初期段階で、上側分割体１０の嵌合溝１２の最深部の端Ｅ（ヒンジ手段Ｈの反対側の端）は、フランジ部１ａ，２ａの上半部の周方向の半分を越えている。すなわち、上側分割体１０の端Ｅは図３（Ａ）においてフランジ部１ａ，２ａの中心を通る垂直面Ｖより左側（ヒンジ手段Ｈの反対側）に位置する。 Specifically, in the initial stage when the engagement protrusion 25 is inserted into the engagement hole 16 and the hinge means H is configured, the deepest end E of the engagement groove 12 of the upper divided body 10 (of the hinge means H) The opposite end) extends over half of the upper half of the flange portions 1a, 2a in the circumferential direction. That is, the end E of the upper divided body 10 is located on the left side (on the opposite side of the hinge means H) from the vertical plane V passing through the centers of the flange parts 1a and 2a in FIG. 3(A).

次に、上側分割体１０を下側分割体２０に近づけるように支点Ｆを中心として回動させることにより、上側分割体１０の受部１８が下側分割体２０の受部２８に近づき対峙する。この状態で、上側分割体１０の嵌合溝１２内にもフランジ部１ａ，２ａの一部が収容される。また、下側分割体２０の係合突起２５は上側分割体１０の係合穴１６の主穴部１６ａ内に収まる。 Next, by rotating the upper divided body 10 around the fulcrum F so as to approach the lower divided body 20, the receiving portion 18 of the upper divided body 10 approaches the receiving portion 28 of the lower divided body 20 and faces each other. . In this state, part of the flange portions 1a and 2a is also accommodated in the fitting groove 12 of the upper divided body 10. Furthermore, the engagement protrusion 25 of the lower divided body 20 fits within the main hole 16a of the engagement hole 16 of the upper divided body 10.

次に、一対の回り止め用凸部２９間にナット３２を回動不能に嵌めた状態で、図３（Ｂ）に示すようにボルト３１を分割体１０、２０の受部１８、２８の貫通穴１８ａ，２８ａに通してナット３２に螺合させ、締付方向に回す。これにより、下側分割体２０と上側分割体１０を、樹脂管１，２のフランジ部１ａ，２ａを挟んだ状態で締め付ける。この締め付け力は、嵌合溝１２，２２の両側のテーパ面１２ａ，２２ａとフランジ部１ａ，２ａのテーパ面１ｙ、２ｙの作用により、フランジ部１ａ，２ａを互いに近づける軸方向の力に変換される。その結果、図４（Ｂ）に示すように、フランジ部１ａ，２ａの突き合わせ面１ｘ、２ｘ同士が突き合わされ、一方の突き合わせ面１ｘの収容溝１ｚに収容されたシールリング３が、弾性変形を伴って他方の突き合わせ面２ｘに密着し、これにより突き合わせ面１ｘ、２ｘ間がシールされる。このようにして接続工程が完了する。 Next, with the nut 32 unrotatably fitted between the pair of anti-rotation protrusions 29, the bolt 31 is inserted through the receiving parts 18 and 28 of the divided bodies 10 and 20, as shown in FIG. 3(B). Pass it through the holes 18a and 28a, screw it onto the nut 32, and turn it in the tightening direction. Thereby, the lower divided body 20 and the upper divided body 10 are tightened with the flanges 1a and 2a of the resin pipes 1 and 2 sandwiched therebetween. This tightening force is converted into an axial force that brings the flanges 1a, 2a closer together by the action of the tapered surfaces 12a, 22a on both sides of the fitting grooves 12, 22 and the tapered surfaces 1y, 2y of the flanges 1a, 2a. Ru. As a result, as shown in FIG. 4(B), the abutting surfaces 1x and 2x of the flange portions 1a and 2a are abutted against each other, and the seal ring 3 accommodated in the accommodation groove 1z of one of the abutting surfaces 1x undergoes elastic deformation. Accordingly, it comes into close contact with the other abutting surface 2x, thereby sealing between the abutting surfaces 1x and 2x. In this way, the connection process is completed.

上記ボルト３１の締め付けにより、受部１８，２８同士が近づき、ヒンジ手段Ｈでは、係合突起２５が係合部１５の係合穴１６の荷重受面１６ｘに強く当たる。 By tightening the bolt 31, the receiving parts 18 and 28 come close to each other, and in the hinge means H, the engaging protrusion 25 strongly hits the load receiving surface 16x of the engaging hole 16 of the engaging part 15.

本願発明の特徴部について
上記のように、シールリング３が収容溝１ｚに正常に収容された状態で接続装置５により樹脂管１，２を接続した場合には、樹脂管１，２の突き合わせ面１ｘ、２ｘ間は良好にシールされ、漏水が生じない。
しかし、シールリング３の一部が収容溝１ｚから外れた状態で樹脂管１，２を接続した場合には、樹脂管１，２の突き合わせ面１ｘ、２ｘ間にシール不良が生じ、漏水が生じる。 Regarding the characteristics of the present invention As described above, when the resin pipes 1 and 2 are connected by the connecting device 5 with the seal ring 3 normally accommodated in the accommodation groove 1z, the abutting surfaces of the resin pipes 1 and 2 There is a good seal between 1x and 2x, and no water leakage occurs.
However, if the resin pipes 1 and 2 are connected with a part of the seal ring 3 removed from the housing groove 1z, a seal failure will occur between the abutting surfaces 1x and 2x of the resin pipes 1 and 2, resulting in water leakage. .

本願発明では、シールリング３が正常にセットされているか否かを判別するために、分割体１０，２０の端部対向面１１ｂ、２１ｂ間の隙間の大きさの相違に着目した。
詳述すると、シールリング３が正常にセットされた場合には、図３（Ｂ）、図５、図６に示すように、分割体１１，１２の締結側の端部対向面１１ｂ、２１ｂ間の隙間は小さく、例えば１．７ｍｍである。これに対してシールリング３が収容溝１ｚから外れている場合には、シールリング３が樹脂管１，２の突き合わせ面１ｘ、２ｘ間に介在されるため突き合わせ面１ｘ、２ｘが突き合わされない。その結果、分割体１０，２０が互いに近づくのを制限され、端部対向面１１ｂ、２１ｂ間の隙間が大きくなる。本実施形態では例えば５．８ｍｍを超える。 In the present invention, in order to determine whether the seal ring 3 is properly set, attention is paid to the difference in the size of the gap between the opposing end surfaces 11b and 21b of the divided bodies 10 and 20.
To be more specific, when the seal ring 3 is set normally, as shown in FIG. 3(B), FIG. 5, and FIG. The gap is small, for example 1.7 mm. On the other hand, when the seal ring 3 is out of the housing groove 1z, the seal ring 3 is interposed between the abutting surfaces 1x, 2x of the resin pipes 1, 2, so the abutting surfaces 1x, 2x do not abut against each other. As a result, the divided bodies 10 and 20 are restricted from coming close to each other, and the gap between the end facing surfaces 11b and 21b increases. In this embodiment, for example, it exceeds 5.8 mm.

本願発明の接続装置５は、図５、図６に示すように、シールリング３が正常にセットされているか否か（すなわちシールが良好か否か）を判別するための手段として、分割体１０、２０の菅軸方向を向く側面に、係合凸部４０（第１係合部）と係合爪４５（第２係合部）がそれぞれ一体をなして形成されている。これら係合凸部４０と係合爪４５は、締結手段３０による締結箇所から遠く、分割体１０，２０の内周面と端部対向面１１ｂ、２１ｂが交差する角部の近傍に形成するのが好ましい。 As shown in FIGS. 5 and 6, the connecting device 5 of the present invention uses a divided body 10 as a means for determining whether the seal ring 3 is set normally (that is, whether the seal is good or not). , 20, an engaging convex portion 40 (first engaging portion) and an engaging claw 45 (second engaging portion) are integrally formed, respectively, on the side faces facing in the tube axis direction. These engaging convex portions 40 and engaging claws 45 are formed far from the fastening portion by the fastening means 30 and near the corners where the inner circumferential surfaces of the divided bodies 10 and 20 and the end facing surfaces 11b and 21b intersect. is preferred.

係合凸部４０には、端部対向面１１ｂ、２１ｂの対向方向、すなわち端部対向面１１ｂと直角をなす方向に貫通する挿通穴４１が形成されている。係合凸部４０の上面４０ａ（分割体２０の反対側の面）は、端部対向面１１ｂと平行な係合面（第１係合面）として提供される。
係合爪４５は、係合凸部４０に向かう方向、すなわち端部対向面２１ｂと直角をなす方向に延びている。係合爪４５の先端部には、テーパ面４５ｘと急峻面４５ｙ（第２係合面）を有する爪部４５ａが形成されている。 The engagement convex portion 40 is formed with an insertion hole 41 that penetrates in a direction opposite to the end facing surfaces 11b and 21b, that is, in a direction perpendicular to the end facing surface 11b. The upper surface 40a of the engagement protrusion 40 (the surface opposite to the divided body 20) is provided as an engagement surface (first engagement surface) parallel to the end facing surface 11b.
The engagement claw 45 extends in a direction toward the engagement convex portion 40, that is, in a direction perpendicular to the end facing surface 21b. A claw portion 45a having a tapered surface 45x and a steep surface 45y (second engagement surface) is formed at the tip of the engagement claw 45.

端部対向面２１ｂ（より正確には端部対向面２１ｂの延長面）と係合爪４５の爪部４５ａの急峻面４５ｙとの間の距離をＤａとし、端部対向面１１ｂ（より正確には端部対向面１１ｂの延長面）と係合凸部４０の係合面４０ａとの間の距離をＤｂとした時、下記の式を満足するように設計する。
Ｄａ－Ｄｂ≦２ｍｍ
上記式の２ｍｍは、シールリング３が収容溝１ｚに収まった正常なセット状態で接続装置５により樹脂管１，２の接続作業が行われた時の端部対向面１１ｂ、２１ｂ間の隙間寸法Ｄｘ＝１．７ｍｍに許容範囲を加算することにより得られたものである。 The distance between the end facing surface 21b (more precisely, the extended surface of the end facing surface 21b) and the steep surface 45y of the claw portion 45a of the engaging claw 45 is Da, and the distance between the end facing surface 11b (more precisely, is an extension of the end facing surface 11b) and the engagement surface 40a of the engagement convex portion 40 is designed to satisfy the following formula, where Db is the distance between the engagement surface 40a of the engagement convex portion 40.
Da-Db≦2mm
2 mm in the above formula is the gap dimension between the end facing surfaces 11b and 21b when the resin pipes 1 and 2 are connected by the connecting device 5 in a normally set state where the seal ring 3 is accommodated in the housing groove 1z. This was obtained by adding the allowable range to Dx=1.7 mm.

締結手段３０による締結工程において、係合爪４５の爪部４５ａのテーパ面４５ｘが挿通穴４１の下側の側縁に当たることにより、係合爪４５が弾性変形しながら係合凸部４０の挿通穴４１に入り込む。シールリング３が収容溝１ｚに正常にセットされた状態で締結作業が実行された場合には、爪部４５ａが挿通穴４１を通り過ぎて、係合爪４５が弾性復帰し、爪部４５ａの急峻面４５ｙが係合凸部４０の係合面４０ａと対峙する。このように係合爪４５と係合凸部４０が係合された状態を見て、樹脂管１，２の突き合わせ面１ｘ、２ｘ間のシールが良好であると判別することができる。 In the fastening step by the fastening means 30, the tapered surface 45x of the claw portion 45a of the engagement claw 45 hits the lower side edge of the insertion hole 41, so that the engagement protrusion 40 is inserted while the engagement claw 45 is elastically deformed. Enter hole 41. When the fastening operation is performed with the seal ring 3 properly set in the housing groove 1z, the claw portion 45a passes through the insertion hole 41, the engaging claw 45 elastically returns, and the steep part of the claw portion 45a The surface 45y faces the engagement surface 40a of the engagement protrusion 40. By observing the state in which the engaging claw 45 and the engaging protrusion 40 are engaged in this manner, it can be determined that the seal between the abutting surfaces 1x and 2x of the resin tubes 1 and 2 is good.

シールリング３が収容溝１ｚから外れている場合には、締結手段３０による締結が完了しても、係合爪４５の爪部４５ａは係合凸部４０の挿通穴４１を通過することができない。すなわち、係合爪４５と係合凸部４０が係合状態に至らない。この状態を見て、樹脂管１，２の突き合わせ面１ｘ、２ｘ間のシールが不良であると判別することができる。 If the seal ring 3 is out of the accommodation groove 1z, the claw portion 45a of the engagement claw 45 cannot pass through the insertion hole 41 of the engagement convex portion 40 even if the fastening by the fastening means 30 is completed. . That is, the engagement claw 45 and the engagement protrusion 40 do not reach the engaged state. By looking at this state, it can be determined that the seal between the abutting surfaces 1x and 2x of the resin pipes 1 and 2 is defective.

なお、係合凸部４０と係合爪４５は分割体１０，２０の内周面と端部対向面１１ｂ、２１ｂが交差する角部近傍に形成されているので、締付手段３０により締付力の影響による隙間寸法Ｄｘの変化量を小さく抑えることができ、シール良否の判別作業を正確に行うことができる。 In addition, since the engaging convex portion 40 and the engaging claw 45 are formed near the corners where the inner circumferential surfaces of the divided bodies 10 and 20 intersect with the end facing surfaces 11b and 21b, they can be tightened by the tightening means 30. The amount of change in the gap dimension Dx due to the influence of force can be suppressed to a small value, and the work of determining whether the seal is good or bad can be performed accurately.

本発明は、上記実施形態に限定されるものではなく、その趣旨に反しない限りにおいて種々の改変をなすことができる。
上記実施形態では締付手段３０による締付完了後にシールの良否判別を実行したが、締付工程前又は締付工程の途中で判別してもよい。
係合凸部４０と係合爪４５は、分割体１０，２０の管軸方向を向く両側面にそれぞれ形成してもよい。
第１係合部と第２係合部は、シールリングが正常にセットされている状態で締結された時に係合可能であれば、いかなる形状を採用してもよい。例えば第１係合部と第２係合部を、同形状をなす弾性変形可能な係合爪で構成してもよい。この場合、シールリングが正常にセットされている状態で締結された時に、係合爪の先端部の爪部同士が係合する。 The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit thereof.
In the embodiment described above, the determination of whether the seal is good or bad is performed after the tightening by the tightening means 30 is completed, but the determination may be made before or during the tightening process.
The engaging protrusion 40 and the engaging claw 45 may be formed on both side surfaces of the divided bodies 10 and 20 facing in the tube axis direction, respectively.
The first engaging portion and the second engaging portion may have any shape as long as they can be engaged when the seal ring is properly set and fastened. For example, the first engaging portion and the second engaging portion may be constituted by elastically deformable engaging claws having the same shape. In this case, when the seal ring is properly set and fastened, the claws at the tips of the engagement claws engage with each other.

本発明は、端部にフランジ部を有する樹脂管を接続する装置に適用することができる。 INDUSTRIAL APPLICATION This invention can be applied to the apparatus which connects the resin pipe which has a flange part at an end.

１、２樹脂管
１ａ，２ａフランジ部
１ｘ、２ｘ突き合わせ面
１ｙ、２ｙテーパ面
１ｚ収容溝
３シールリング
５接続装置
１０上側分割体（第１分割体）
２０下側分割体（第２分割体）
１１ｂ、２１ｂ端部対向面
１２、２２嵌合溝
１２ａ、２２ａテーパ面
３０締結手段
４０係合凸部（第１係合部）
４０ａ係合面（第１係合面）
４１挿通穴
４５係合爪（第２係合部）
４５ａ爪部
４５ｘテーパ面
４５ｙ急峻面（第２係合面）
Ｈヒンジ手段 1, 2 Resin pipes 1a, 2a Flange parts 1x, 2x Abutting surfaces 1y, 2y Tapered surface 1z Accommodating groove 3 Seal ring 5 Connection device 10 Upper divided body (first divided body)
20 Lower divided body (second divided body)
11b, 21b End facing surfaces 12, 22 Fitting grooves 12a, 22a Tapered surface 30 Fastening means 40 Engagement convex portion (first engagement portion)
40a Engagement surface (first engagement surface)
41 Insertion hole 45 Engagement claw (second engagement part)
45a Claw portion 45x Tapered surface 45y Steep surface (second engagement surface)
H Hinge means

Claims

突き合わせ面とテーパ面を有する環状のフランジ部が一端部に形成された２本の樹脂管を接続する接続装置において、
第１、第２分割体と、前記第１、第２分割体の一端部を互いに樹脂管の管軸と直交する平面に沿って回動可能に連結するヒンジ手段と、前記第１、第２分割体の他端部同士を近付けるように締め付ける締結手段と、を備え、
前記第１、第２分割体は、内周面に円弧状に延びる嵌合溝を有し、前記嵌合溝はその両側にテーパ面を有し、前記締結手段による締め付け時に、前記嵌合溝の前記テーパ面が２本の樹脂管の前記フランジ部の前記テーパ面を押圧することにより、前記第１、第２分割体の前記他端部の対向面が互いに近づくとともに、２本の樹脂管の前記フランジ部の前記突き合わせ面が互いに突き合わされ、一方の樹脂管の前記突き合わせ面の環状の収容溝に収容されたシールリングが、他方の樹脂管の前記突き合わせ面に密着して、２本の樹脂管の前記突き合わせ面間がシールされるようになっており、
前記第１分割体の前記他端部の側面には、第１係合部が形成され、
前記第２分割体の前記他端部の側面には、第２係合部が形成され、
前記締結手段により前記第１、第２分割体が締結され２本の樹脂管の接続が完了した時に、前記シールリングが前記収容溝に正常に収容されている場合には前記第１、第２係合部が弾性変形を伴って係合され、前記シールリングが前記収容溝に正常に収容されていない場合には前記第１、第２係合部が係合されないことを特徴とする樹脂管の接続装置。 In a connecting device for connecting two resin pipes each having an annular flange portion formed at one end thereof and having an abutting surface and a tapered surface,
first and second divided bodies; hinge means for rotatably connecting one end of the first and second divided bodies to each other along a plane perpendicular to the tube axis of the resin tube; A fastening means for tightening the other ends of the divided body so as to bring them closer together,
The first and second divided bodies each have a fitting groove extending in an arc shape on an inner circumferential surface, and the fitting groove has a tapered surface on both sides thereof, and when tightened by the fastening means, the fitting groove By pressing the tapered surfaces of the flange portions of the two resin tubes, the opposing surfaces of the other end portions of the first and second divided bodies approach each other, and the two resin tubes The abutting surfaces of the flange portions of the flange portions abut each other, and the seal ring accommodated in the annular accommodation groove of the abutting surface of one resin tube is in close contact with the abutting surface of the other resin tube, so that the two The abutting surfaces of the resin pipes are sealed,
A first engaging portion is formed on a side surface of the other end of the first divided body,
A second engaging portion is formed on a side surface of the other end of the second divided body,
When the first and second divided bodies are fastened by the fastening means and the connection of the two resin pipes is completed, if the seal ring is normally accommodated in the accommodation groove, the first and second divided bodies The resin tube is characterized in that the engaging portion is engaged with elastic deformation , and the first and second engaging portions are not engaged when the seal ring is not properly accommodated in the accommodation groove. connection device.

前記第１、第２分割体は半円筒形状の本体部をそれぞれ有し、前記第１、第２分割体の前記他端部には、それぞれ前記本体部から径方向外側に延びる受部が形成され、前記第１、第２分割体の前記受部が前記締結手段により締結されるようになっており、
前記第１係合部と前記第２係合部は、それぞれ前記第１、第２分割体の前記他端部において、樹脂管の管軸方向を向く前記本体部の側面に形成されていることを特徴とする請求項１に記載の樹脂管の接続装置。 The first and second divided bodies each have a semi-cylindrical main body, and the other ends of the first and second divided bodies are each formed with a receiving part that extends radially outward from the main body. and the receiving portions of the first and second divided bodies are fastened by the fastening means,
The first engaging portion and the second engaging portion are formed on a side surface of the main body portion facing in the tube axis direction of the resin tube at the other end portions of the first and second divided bodies, respectively . The resin pipe connecting device according to claim 1, characterized in that:

前記第１、第２係合部は、それぞれ前記第１、第２分割体における前記対向面と前記内周面とが交差する角部に近い位置に形成されていることを特徴とする請求項２に記載の樹脂管の接続装置。 The first and second engaging portions are formed at positions close to corners where the opposing surface and the inner circumferential surface of the first and second divided bodies intersect , respectively. 2. The resin pipe connection device according to 2.

前記第１係合部は、前記第１分割体の側面から突出する係合凸部からなり、前記係合凸部には、前記第１、第２分割体の前記他端部の前記対向面の対向方向に貫通する挿通穴が形成され、
前記第２係合部は、前記係合凸部に向かって延びる係合爪からなり、
前記第１分割体の前記係合凸部において前記第２分割体の反対側の面が第１係合面として提供され、前記係合爪の前記爪部はテーパ面と急峻面とを有し、前記急峻面が第２係合面として提供され、
前記シールリングが前記収容溝に正常に収容された状態で２本の樹脂管が接続された時に、前記係合爪の先端部の爪部が前記係合凸部の前記挿通穴を通過して前記係合凸部に係合され、前記第１、第２係合面が、許容範囲内のクリアランスで互いに対向することを特徴とする請求項２または３に記載の樹脂管の接続装置。 The first engaging portion includes an engaging convex portion protruding from a side surface of the first divided body, and the engaging convex portion includes the opposing surfaces of the other ends of the first and second divided bodies. An insertion hole is formed that penetrates in the direction opposite to the
The second engaging portion includes an engaging claw extending toward the engaging convex portion,
In the engagement convex portion of the first divided body, a surface opposite to the second divided body is provided as a first engagement surface, and the claw portion of the engagement claw has a tapered surface and a steep surface. , the steep surface is provided as a second engagement surface,
When the two resin pipes are connected with the seal ring normally accommodated in the accommodation groove, the claw at the tip of the engagement claw passes through the insertion hole of the engagement protrusion. The resin pipe connecting device according to claim 2 or 3 , wherein the first and second engaging surfaces are engaged with the engaging convex portion and face each other with a clearance within an allowable range .

上記第１、第２分割体がガラス繊維入りの樹脂により形成されていることを特徴とする請求項１～４のいずれかに記載の樹脂管の接続装置。 5. The resin pipe connecting device according to claim 1, wherein the first and second divided bodies are made of resin containing glass fiber.