JP2006009884A - Pipe joint - Google Patents

Pipe joint Download PDF

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Publication number
JP2006009884A
JP2006009884A JP2004185968A JP2004185968A JP2006009884A JP 2006009884 A JP2006009884 A JP 2006009884A JP 2004185968 A JP2004185968 A JP 2004185968A JP 2004185968 A JP2004185968 A JP 2004185968A JP 2006009884 A JP2006009884 A JP 2006009884A
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Prior art keywords
pipe
retainer
joint
bolt
seal member
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Kazumi Kato
一三 加藤
Masakazu Mizutani
正教 水谷
Tsumoru Nakada
積 中田
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Hitachi Metals Ltd
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Hitachi Metals Ltd
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Priority to JP2004185968A priority Critical patent/JP2006009884A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive pipe joint capable of shortening piping work time. <P>SOLUTION: The pipe joint 1 is provided with a joint main body 2 in which a connection pipe 6 is inserted into at least one end side, a seal member 3 fitted into inside of the joint main body 2, a retainer member 4 abutting on the seal member 3 and a plurality of bolts 5 pressing the retainer member 4 in the pipe axis direction. At least in its one end part, the joint main body 2 has a flange part 21 with inner diameter into which the connection pipe 6 can be inserted. A bolt 5 is screwed into the flange part 21. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、複数の接続管を接続する管継手に係り、例えばビル屋内の排水配管を接続するために使用され施工性および経済性に優れたメカニカル式管継手に関するものである。   The present invention relates to a pipe joint that connects a plurality of connecting pipes, and relates to a mechanical pipe joint that is used, for example, to connect a drain pipe in a building and has excellent workability and economy.

従来より、ビル等の屋内の雑排水や汚水排水などを排水するための配管には鋳鉄管、鋼管又は塩化ビニール管が使用されており、これらのうち鋼管を接続する管継手として以前はねじ込み式管継手が多く使用されていた。しかし、ねじ込み式管継手を使用する場合は、接続管の管端部にネジ加工を施す必要があり、特に、呼び径が4インチを越えるような大口径の接続管を接続する場合は、接続管のネジ加工に加えて、大型の接続工具を使用するので、配管施工に要する時間が長くなるという問題があった。このような不具合を解消するために、現在は、接続管の管端加工が不要なメカニカル式管継手で排水用配管を接続することが一般的である。   Conventionally, cast iron pipes, steel pipes or vinyl chloride pipes have been used as pipes for draining miscellaneous wastewater and sewage drainage in buildings, etc., and among these pipe fittings that used to connect steel pipes were previously screwed. Many pipe fittings were used. However, when using a screw-type pipe joint, it is necessary to thread the pipe end of the connection pipe, especially when connecting a large-diameter connection pipe with a nominal diameter exceeding 4 inches. Since a large connecting tool is used in addition to pipe threading, there is a problem that the time required for pipe construction becomes long. In order to eliminate such problems, it is common to connect the drainage pipe with a mechanical pipe joint that does not require pipe end processing of the connection pipe.

鋼管を接続するためのメカニカル式管継手(以下単に管継手という)としては、種々の構造のものが提案されているが、奥側に接続管の受け口を有しかつ端部外周部にフランジ部を有する継手本体の内部に、シール部材と抜け止め部材を収容し、このシール部材を継手本体のフランジ部にボルトで連結された押圧部で押し込むようにした構造の管継手が一般的である。この管継手によれば、ねじ込み式管継手に比べ大幅に施工時間を短縮できるものの、シール部材および抜け止め部材を施工現場にて継手本体に組み付ける際に、組付け順序の間違い、部品の未挿入、あるいは施工現場に運搬する間に部品が紛失するなどの不具合が生じることがある。そこで、本出願人は、特許文献1に記載されている管継手を提案した。この管継手の要部を図7に示す。図7に示す管継手は、シール部材66と抜け止め部材67を連結ピン68で結合・一体化し、このシール用部品を継手本体62とシール部材押圧部63との間に挟み込んだ状態で、継手本体62とシール部材押圧部63をボルト64及びナット65で締付けることにより、接続管6の外周部をシールするように構成されている。この管継手によれば、シール部材66と抜け止め部材67が一体的に連結されるため、配管施工時の部品の組み付け作業が簡略化されことから、組み付け不良の発生頻度を低減できるという利点がある。   Various types of mechanical pipe joints (hereinafter simply referred to as pipe joints) for connecting steel pipes have been proposed. However, there are connection pipe receptacles on the back side and flanges on the outer periphery of the ends. In general, a pipe joint having a structure in which a seal member and a retaining member are accommodated inside a joint main body having a structure, and the seal member is pushed into a flange portion of the joint main body by a pressing portion connected by a bolt. According to this pipe joint, the construction time can be shortened significantly compared to screw-in type pipe joints, but when assembling the seal member and retaining member to the joint body at the construction site, the assembly order is incorrect and the parts are not inserted. Or, there may be a problem that parts are lost during transportation to the construction site. Therefore, the present applicant has proposed a pipe joint described in Patent Document 1. The main part of this pipe joint is shown in FIG. In the pipe joint shown in FIG. 7, the seal member 66 and the retaining member 67 are joined and integrated by the connecting pin 68, and the seal component is sandwiched between the joint body 62 and the seal member pressing portion 63. By tightening the main body 62 and the seal member pressing portion 63 with a bolt 64 and a nut 65, the outer peripheral portion of the connection pipe 6 is sealed. According to this pipe joint, since the seal member 66 and the retaining member 67 are integrally connected, the assembling work of the parts at the time of piping construction is simplified, so that the frequency of occurrence of poor assembly can be reduced. is there.

特開2002−005354号公報(第2頁、図1)Japanese Patent Laying-Open No. 2002-005354 (second page, FIG. 1)

近年の建築設備の配管施工においては、配管部材の低コスト化と熟練作業者によらずに速やかに配管施工できることが望まれている。しかしながら、上記の管継手を使用して鋼管を接続する場合は、接続管6の端部に押圧部63と一体化したシール用部品の装着、これらの継手本体への組み付け及びボルト64とナット65による締付けと3つの工程が必要とされるため、施工時間をそれほど短縮できないという難点がある。また、上記の構造を有する管継手によれば、部品点数が多くなり、低コスト化が困難である。   In recent years, it has been desired to reduce the cost of piping members and to be able to quickly perform piping work regardless of skilled workers. However, when connecting a steel pipe using the above pipe joint, mounting of a sealing part integrated with the pressing portion 63 to the end of the connection pipe 6, assembling to these joint bodies, and the bolt 64 and nut 65 Since the tightening and three processes are required, the construction time cannot be reduced so much. Moreover, according to the pipe joint having the above-described structure, the number of parts increases and it is difficult to reduce the cost.

従って、本発明の目的は、上記課題を解決し、施工時間の短縮とコスト低減が可能な管継手を提供することである。   Accordingly, an object of the present invention is to solve the above-described problems and provide a pipe joint that can reduce the construction time and cost.

上記目的を達成するために、本発明の管継手は、少なくとも一端側に接続管が挿入される継手本体と、前記継手本体の内部に装着されたシール部材と、前記シール部材に当接するリテーナ部材と、前記リテーナ部材を管軸方向に押圧する複数のボルトを備え、前記継手本体は、その少なくとも一端部に前記接続管が挿通可能な内径を有するフランジ部を有し、前記フランジ部には前記ボルトが螺合されていることを特徴とするものである。   In order to achieve the above object, a pipe joint according to the present invention includes a joint main body into which a connecting pipe is inserted at least on one end side, a seal member mounted inside the joint main body, and a retainer member that contacts the seal member. And a plurality of bolts that press the retainer member in the tube axis direction, and the joint body has a flange portion having an inner diameter through which the connection tube can be inserted at least at one end thereof, The bolt is screwed together.

本発明においては、前記リテーナ部材は、前記ボルトの端面が当接するリテーナフランジ部とそこから前記継手本体の奥側に向かって下り勾配に形成されたリテーナテーパ部からなるリング状の部材であることが好ましい。   In the present invention, the retainer member is a ring-shaped member comprising a retainer flange portion with which the end face of the bolt abuts and a retainer taper portion formed downwardly from the retainer flange portion toward the back side of the joint body. Is preferred.

本発明においては、前記リテーナ部材は、弾性変形可能な形状を有することが好ましく、さらに、前記リテーナフランジ部は、前記ボルトの端面と相互に補完する形状に形成された部分を有することがより好ましい。   In the present invention, the retainer member preferably has an elastically deformable shape, and more preferably, the retainer flange portion has a portion formed in a shape complementary to the end face of the bolt. .

本発明の管継手によれば、接続管を継手本体の端部に形成された開口部から継手本体の奥まで挿入した後、継手本体の端部に形成されたフランジ部に螺合されたボルトを締付けるという簡単な作業を実施することで接続管と管継手の接続を行なうことができる。   According to the pipe joint of the present invention, after the connecting pipe is inserted from the opening formed at the end of the joint main body to the depth of the joint main body, the bolt is screwed into the flange formed at the end of the joint main body. Connection pipes and pipe joints can be connected by carrying out a simple operation of tightening.

また、施工前に予め継手本体の内部にシール部材などの部品を組込むことが可能となるため、部品の誤装着や未装着が解消されるとともに、施工時間を短縮することができる。   Moreover, since components such as a seal member can be incorporated in the joint main body in advance before construction, erroneous mounting and non-mounting of components can be eliminated, and the construction time can be shortened.

また、継手本体の外部に、シール部材を圧縮するための押圧部材を設けることが不要となり、従来のメカニカル式管継手と比べて、部品点数が削減されて低コスト化が可能となる。   In addition, it is not necessary to provide a pressing member for compressing the seal member outside the joint body, and the number of parts can be reduced and the cost can be reduced as compared with a conventional mechanical pipe joint.

以下、本発明の実施の形態について図面に基づいて説明する。
図1は、本発明の管継手の一実施の形態に係わり、管継手に接続管を挿入し、ボルトを締付ける前の状態を示す半戴縦断面図、図2は図1の要部を示す断面図、図3は、ボルトを締付けて管接続が完了した状態を示す、図1の要部を示す断面図、図4は管継手に装着前のリテーナ部材の断面図、図5は同平面図、図6は管継手に装着された状態を示すリテーナ部材の平面図である。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 relates to an embodiment of a pipe joint of the present invention, and is a half-longitudinal sectional view showing a state before a connecting pipe is inserted into the pipe joint and tightened with a bolt, and FIG. 2 shows a main part of FIG. FIG. 3 is a cross-sectional view showing a main part of FIG. 1, showing a state where a pipe connection is completed by tightening a bolt, FIG. 4 is a cross-sectional view of a retainer member before being attached to a pipe joint, and FIG. FIG. 6 and FIG. 6 are plan views of the retainer member showing a state where it is attached to the pipe joint.

図1に示す管継手1は、その両端に(図1では一方のみ示す)流体(例えば排水)が流動する接続管6が挿入されかつ接続管6との間に間隙20が形成される継手本体2と、継手本体2の内部に装着されるシール部材3及びリテーナ部材4と、継手本体2の端部に螺合されかつ円周方向に沿って配置された(例えば対称に配置された)複数のボルト5を備えている。この管継手1は管軸方向の中央を中心に左右対称な構造なので、以下の説明では、一方の部分のみその詳細を記載し、他方の部分の説明を省略する。   The pipe joint 1 shown in FIG. 1 has a joint body in which a connection pipe 6 in which a fluid (for example, drainage) flows is inserted at both ends (only one is shown in FIG. 1) and a gap 20 is formed between the pipes 1. 2, a seal member 3 and a retainer member 4 that are mounted inside the joint body 2, and a plurality of screws that are screwed into the end of the joint body 2 and arranged along the circumferential direction (for example, symmetrically arranged). The bolt 5 is provided. Since this pipe joint 1 has a bilaterally symmetric structure around the center in the pipe axis direction, in the following description, only one part is described in detail, and the description of the other part is omitted.

図2に示すように継手本体2は、全体が略円筒状に形成され、その端部にはフランジ部21を有し、フランジ部21の内径は接続管6との間に間隙20が形成されるような寸法に設定されている。図2の例では、このフランジ部21は、プレス成形などにより継手本体2の端部を内側に折り曲げることにより一体に形成されているが、リング状部材を作製しておき、溶接あるいはボルトなどにより継手本体2に固定することもできる。継手本体2の端部において、その内周部には、接続管6の挿入長さを規制するために、接続管6の端面が突き当たる壁部25と、接続管6を管軸方向に沿って案内するための第1の平行部24とからなる受け口26が形成されている。また、受け口26からフランジ部21に向かって上り勾配となるテーパ面27とそこから管軸方向に伸びる第2の平行部28とが形成されることにより、テーパ面27、第2の平行部28及びフランジ内面29と接続管6の外周面とで囲まれた領域(以下シール部材収容部という)23にシール部材3と、シール部材を均一に圧縮しかつ接続管の抜け出しを防止するためのリテーナ部材4が装着されている。リテーナ部材4は、シール部材3のテーパ面27が形成された側とは反対側の端面に当接するように組み付けられている。継手本体2は、例えばJIS G 5501に記載されているねずみ鋳鉄、JIS G 5502に記載されている球状黒鉛鋳鉄あるいは炭素鋼で形成することができる。また、継手本体2に耐食性を付与するために、亜鉛めっきやエポキシ塗装などで表面処理することが望ましい。   As shown in FIG. 2, the joint body 2 is formed in a substantially cylindrical shape as a whole, and has a flange portion 21 at its end, and a gap 20 is formed between the inner diameter of the flange portion 21 and the connection pipe 6. It is set to such a dimension. In the example of FIG. 2, the flange portion 21 is integrally formed by bending the end portion of the joint body 2 inward by press molding or the like, but a ring-shaped member is prepared and welded or bolted or the like. It can also be fixed to the joint body 2. In order to restrict the insertion length of the connecting pipe 6 at the end of the joint body 2, the wall part 25 against which the end face of the connecting pipe 6 abuts and the connecting pipe 6 are arranged along the pipe axis direction. A receiving port 26 including a first parallel portion 24 for guiding is formed. Further, the tapered surface 27 and the second parallel portion 28 are formed by forming a tapered surface 27 that is inclined upward from the receiving port 26 toward the flange portion 21 and a second parallel portion 28 that extends in the tube axis direction therefrom. And a seal member 3 in a region (hereinafter referred to as a seal member housing portion) 23 surrounded by the flange inner surface 29 and the outer peripheral surface of the connection pipe 6, and a retainer for uniformly compressing the seal member and preventing the connection pipe from coming out A member 4 is mounted. The retainer member 4 is assembled so as to abut on the end surface of the seal member 3 opposite to the side where the tapered surface 27 is formed. The joint body 2 can be formed of, for example, gray cast iron described in JIS G 5501, spheroidal graphite cast iron described in JIS G 5502, or carbon steel. Further, in order to impart corrosion resistance to the joint body 2, it is desirable to perform a surface treatment by galvanization or epoxy coating.

シール部材3は弾性体からなる環状の部材で、シール部材収容部23に収容されかつ圧縮された時にテーパ面27及び第2の平行部28に密着するために、その外周にテーパ部31および平行部32が形成された形状を有する。シール部材3の内周部は管軸方向に平行な形状で、かつ非圧縮時の内径寸法は接続管6の外径より大きくなるように設定されている。接続管6の挿入し易さとシール性を考慮すると、シール部材3の内径寸法は接続管6の外径寸法の1.01〜1.05倍程度であることが望ましい。シール部材3は、例えば耐水性を有するスチレンブタジエンゴム(SBR)や、耐薬品性に優れるニトリルゴム(NBR)で形成することができる。   The seal member 3 is an annular member made of an elastic body. When the seal member 3 is accommodated in the seal member accommodating portion 23 and compressed, the seal member 3 closely contacts the tapered surface 27 and the second parallel portion 28. The portion 32 has a formed shape. The inner peripheral portion of the seal member 3 has a shape parallel to the tube axis direction, and the inner diameter dimension when not compressed is set to be larger than the outer diameter of the connection pipe 6. Considering ease of insertion of the connecting pipe 6 and sealing performance, the inner diameter of the sealing member 3 is desirably about 1.01 to 1.05 times the outer diameter of the connecting pipe 6. The seal member 3 can be formed of, for example, water-resistant styrene butadiene rubber (SBR) or nitrile rubber (NBR) having excellent chemical resistance.

リテーナ部材4は、図4に示すように、例えば金属製薄板で形成された縦断面が略コ字状のリング状部材で、リテーナテーパ部44と半径リテーナ外周部42とリテーナフランジ部43を有する。図5に示すように、リテーナテーパ部44には円周方向に沿って(例えば等間隔で)複数の切込み47が形成されるとともに、リテーナ部材4の円周方向の一部に切欠部45が形成されている。リテーナフランジ部43の端面には、切欠部45と対称の位置に、継手の開口側に向かって管軸方向に突出するピン41が設けられている。リテーナ4及びピン41は、長期間使用しても腐食しにくく、また、機械的強度の強い金属材料、例えばステンレス鋼板で形成することが望ましい。   As shown in FIG. 4, the retainer member 4 is a ring-shaped member formed of, for example, a metal thin plate and having a substantially U-shaped longitudinal section, and includes a retainer taper portion 44, a radius retainer outer peripheral portion 42, and a retainer flange portion 43. . As shown in FIG. 5, a plurality of cuts 47 are formed in the retainer taper portion 44 along the circumferential direction (for example, at equal intervals), and the notch portions 45 are formed in a part of the retainer member 4 in the circumferential direction. Is formed. On the end face of the retainer flange portion 43, a pin 41 is provided at a position symmetrical to the notch portion 45 and protrudes in the tube axis direction toward the opening side of the joint. It is desirable that the retainer 4 and the pin 41 are made of a metal material that is not easily corroded even when used for a long period of time and has a high mechanical strength, for example, a stainless steel plate.

継手本体2の端部に形成されたフランジ部21には、同一円周上に例えば等間隔で4箇所のメネジ部22が形成され、そこにボルト5が螺合されている。ボルト5の端面には、リテーナ部材4の端面から突設するピン41を受取る凹部51が形成されている。これにより、ボルト5をねじ込む時に、ピン41がボルト51で支持されるので、リテーナ部材4の円周方向の回動が阻止され、リテーナ部材4を継手本体2の内部に固定することが可能となる。ここで、リテーナフランジ部43の端面とボルト5の端面とが相互に補完しうる形状であれば、リテーナ部材4の位置決めを行うことができるので、リテーナ部材4にピン41を設ける代わりに、リテーナフランジ部43に凹部あるいは貫通孔を設け、一方ボルト5の端面に凸部を設けてもよい。ボルト5としては、市販の鋼製ボルトをそのまま使用してもよいし、あるいは、緩み防止のために、ネジ部に例えば嫌気性接着剤を塗布してもよい。   For example, four internal thread portions 22 are formed at equal intervals on the same circumference on the flange portion 21 formed at the end of the joint body 2, and the bolts 5 are screwed there. On the end face of the bolt 5, a recess 51 for receiving a pin 41 protruding from the end face of the retainer member 4 is formed. Accordingly, when the bolt 5 is screwed in, the pin 41 is supported by the bolt 51, so that the retainer member 4 is prevented from rotating in the circumferential direction, and the retainer member 4 can be fixed inside the joint body 2. Become. Here, if the end surface of the retainer flange portion 43 and the end surface of the bolt 5 can complement each other, the retainer member 4 can be positioned. Therefore, instead of providing the pin 41 on the retainer member 4, the retainer A concave portion or a through hole may be provided in the flange portion 43, while a convex portion may be provided on the end surface of the bolt 5. As the bolt 5, a commercially available steel bolt may be used as it is, or, for example, an anaerobic adhesive may be applied to the screw portion to prevent loosening.

上記の管継手1を使用することにより、例えば次の手順で接続管を接続することができる。先ず、継手本体2の内部にシール部材3とリテーナ部材4を装着しておく。シール部材3とリテーナ部材4はそれぞれ単独で継手本体2に装着することも可能であるが、両部材を予め組み付けて一体化しておくことにより、配管施工作業を効率的に行なうことが可能となる。   By using the pipe joint 1 described above, for example, the connection pipe can be connected by the following procedure. First, the seal member 3 and the retainer member 4 are mounted inside the joint body 2. The seal member 3 and the retainer member 4 can be attached to the joint main body 2 independently, but the pipe construction work can be efficiently performed by assembling and integrating both the members in advance. .

リテーナ部材4を継手本体2に装着する際には、外周から内周に向かって加圧すればよい。そうすることで、上記切込み47及び切欠部45があるため、全体が弾性変形して、図6に示すように、切欠部45を挟んで一方の端部が他方の端部と周方向に重なりあって重なり部46が形成される。このように縮径されたリテーナ部材4は、継手本体2の内部に装着される。
また、リテーナ部材4の継手本体2への装着を容易に行なうために、リテーナ部材4は内周側に所定の数の切欠部45が形成された二分割リングとすることもできる。二分割リングは夫々管軸方向に突出するピン41が固定され、ボルト5端面の凹部51と嵌合するように継手本体2に内挿される。そうすることで、機械的強度の高い2箇所の重なり部46を形成することができる。
What is necessary is just to pressurize from the outer periphery toward an inner periphery, when attaching the retainer member 4 to the coupling main body 2. FIG. By doing so, since the notch 47 and the notch 45 are present, the whole is elastically deformed, and as shown in FIG. 6, one end overlaps the other end in the circumferential direction with the notch 45 interposed therebetween. Thus, an overlapping portion 46 is formed. The retainer member 4 thus reduced in diameter is mounted inside the joint body 2.
Further, in order to easily attach the retainer member 4 to the joint body 2, the retainer member 4 may be a two-part ring in which a predetermined number of notch portions 45 are formed on the inner peripheral side. Each of the two split rings is fixed with a pin 41 protruding in the tube axis direction, and is inserted into the joint body 2 so as to be fitted with the recess 51 on the end face of the bolt 5. By doing so, two overlapping portions 46 having high mechanical strength can be formed.

次いで接続管6を継手本体2の端部から管端が壁部25に突き当たるまで挿入する。この時、接続管6の管端は第1の平行部24に沿って挿入されるので、円滑な挿入を行うことができる。接続管6が継手本体2の奥まで差込まれたことを確認した後、ボルト5を締め込むことによって、リテーナ部材4を介してシール部材3が押圧される。これにより、シール部材3は圧縮されて、その楔状端部がテーパ面27と壁部25との間に食い込むとともに、第2の平行部28および接続管6の外周面に強く密着されることにより、確実なシールが行われる。   Next, the connecting pipe 6 is inserted from the end of the joint body 2 until the pipe end abuts against the wall 25. At this time, since the pipe end of the connection pipe 6 is inserted along the first parallel portion 24, smooth insertion can be performed. After confirming that the connecting pipe 6 has been inserted into the joint body 2, the bolt 5 is tightened, whereby the seal member 3 is pressed via the retainer member 4. As a result, the seal member 3 is compressed, and the wedge-shaped end portion thereof bites between the taper surface 27 and the wall portion 25 and is tightly adhered to the outer peripheral surface of the second parallel portion 28 and the connecting pipe 6. Secure sealing is performed.

また、ボルト5の締付けによるシール部材3の圧縮に伴い、リテーナテーパ部44は接続管6側に倒れるように変形するので、リテーナテーパ部44の内周縁のエッジ部48が接続管6の外周面に食い込み。これにより、接続管6の抜け出しが防止されて、管継手1と接続管6が強固に接続される。なお、ボルト5の本数は、締付け力などに応じて適宜設定すればよい。   Further, as the seal member 3 is compressed by tightening the bolt 5, the retainer taper portion 44 is deformed so as to fall toward the connection tube 6, so that the edge portion 48 at the inner peripheral edge of the retainer taper portion 44 is the outer peripheral surface of the connection tube 6. Bite into. Thereby, the connection pipe 6 is prevented from being pulled out, and the pipe joint 1 and the connection pipe 6 are firmly connected. The number of bolts 5 may be set as appropriate according to the tightening force or the like.

上記の接続構造によれば、接続管6の外周部とシール部材収容部23の内周とはシール部材3でシールされ、良好な水密作用を得ることができる。またシール部材収容部23の内周にリテーナ部材外周部42が接触し、リテーナテーパ部44の内径が管6の外周に斜め状態で当接することにより接続管6が継手1より容易に抜出さないように接合することができる。したがって、図1に示す継手構造によれば、上述の構成部品が組み込まれた管継手に接続管を差込み、ボルト5を締付けるといった簡単な操作で、接続管を確実に接合することができるので、施工時間が大幅に短縮され、かつ信頼性の高い配管を実現することができる。   According to said connection structure, the outer peripheral part of the connecting pipe 6 and the inner periphery of the sealing member accommodating part 23 are sealed with the sealing member 3, and a favorable watertight effect | action can be acquired. Further, the retainer member outer peripheral portion 42 is in contact with the inner periphery of the seal member accommodating portion 23, and the inner diameter of the retainer taper portion 44 is in contact with the outer periphery of the tube 6 in an oblique state so that the connecting tube 6 is not easily pulled out from the joint 1. Can be joined together. Therefore, according to the joint structure shown in FIG. 1, the connection pipe can be reliably joined by a simple operation such as inserting the connection pipe into the pipe joint in which the above-described components are incorporated and tightening the bolt 5. Construction time is greatly shortened and highly reliable piping can be realized.

なお、本発明によれば前述により説明した構造に限らず、発明の要旨を変更しない範囲で種々の変更をすることができることは言うまでもない。   Needless to say, the present invention is not limited to the structure described above, and various changes can be made without changing the gist of the invention.

本発明の実施の形態に係わる管継手の接続管を挿入後ボルトを締付ける前の状態を示す半戴縦断面図である。FIG. 5 is a half-longitudinal sectional view showing a state before inserting a connecting pipe of a pipe joint according to an embodiment of the present invention and before tightening a bolt. 図1の要部を示す断面図である。It is sectional drawing which shows the principal part of FIG. 図1の管継手に接続管を挿入後ボルト締付け完了状態の要部を示す部分断面図である。It is a fragmentary sectional view which shows the principal part of a bolt fastening completion state after inserting a connection pipe in the pipe joint of FIG. リテーナ部材の断面図である。It is sectional drawing of a retainer member. リテーナ部材の平面図である。It is a top view of a retainer member. 継手本体に装着された後のリテーナ部材の平面図である。It is a top view of a retainer member after being attached to a joint main part. 従来の管継手の要部を示す縦断面図である。It is a longitudinal cross-sectional view which shows the principal part of the conventional pipe joint.

符号の説明Explanation of symbols

1:管継手、2:継手本体、3:シール部材、4:リテーナ部材、5:ボルト、6:接続管、20:隙間、21:フランジ部、22:メネジ部、23:シール部材収容部、24:第1の平行部、25:壁部、26:受け口、27:テーパ面、28:第2の平行部、29:フランジ内面、31:テーパ部、32:平行部、41:ピン、42:リテーナ外周部、43:リテーナフランジ部、44:リテーナテーパ部、45:切欠部、46:重なり部、47:切込み、48:エッジ部、51:凹部 1: pipe joint, 2: joint body, 3: seal member, 4: retainer member, 5: bolt, 6: connecting pipe, 20: gap, 21: flange part, 22: female thread part, 23: seal member accommodating part, 24: 1st parallel part, 25: Wall part, 26: Receptor, 27: Tapered surface, 28: 2nd parallel part, 29: Flange inner surface, 31: Tapered part, 32: Parallel part, 41: Pin, 42 : Retainer outer peripheral part, 43: retainer flange part, 44: retainer taper part, 45: notch part, 46: overlap part, 47: notch, 48: edge part, 51: recessed part

Claims (4)

少なくとも一端側に接続管が挿入される継手本体と、前記継手本体の内部に装着されたシール部材と、前記シール部材に当接するリテーナ部材と、前記リテーナ部材を管軸方向に押圧する複数のボルトを備え、前記継手本体は、その少なくとも一端部に前記接続管が挿通可能な内径を有するフランジ部を有し、前記フランジ部には前記ボルトが螺合されていることを特徴とする管継手。 A joint main body into which a connecting pipe is inserted at least at one end side, a seal member mounted inside the joint main body, a retainer member that comes into contact with the seal member, and a plurality of bolts that press the retainer member in the pipe axis direction The joint main body has a flange portion having an inner diameter through which the connection pipe can be inserted at least at one end thereof, and the bolt is screwed into the flange portion. 前記リテーナ部材は、前記ボルトの端面が当接するリテーナフランジ部とそこから前記継手本体の奥側に向かって下り勾配に形成されたリテーナテーパ部からなるリング状の部材であることを特徴とする請求項1に記載の管継手。 The retainer member is a ring-shaped member comprising a retainer flange portion with which an end face of the bolt abuts and a retainer taper portion formed downwardly from the retainer flange portion toward the back side of the joint body. Item 1. The pipe joint according to Item 1. 前記リテーナ部材は、弾性変形可能な形状を有することを特徴とする請求項2に記載の管継手。 The pipe joint according to claim 2, wherein the retainer member has an elastically deformable shape. 前記リテーナフランジ部は、前記ボルトの端面と相互に補完する形状に形成された部分を有することを特徴とする請求項3に記載の管継手。 4. The pipe joint according to claim 3, wherein the retainer flange portion has a portion formed in a shape complementary to the end surface of the bolt.
JP2004185968A 2004-06-24 2004-06-24 Pipe joint Pending JP2006009884A (en)

Priority Applications (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010175028A (en) * 2009-01-30 2010-08-12 Waterworks Technology Development Organization Co Ltd Pipe joint and packing ring
KR101323175B1 (en) * 2011-11-17 2013-10-30 노현호 Connecting and sealing device for a plastic corrugated pipes
CN110274070A (en) * 2019-05-21 2019-09-24 高邮市特种紧固件厂 A kind of sealing effect is good and the valve that is easily installed
JP7016140B2 (en) 2017-09-12 2022-02-04 古林工業株式会社 Pipe fittings

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010175028A (en) * 2009-01-30 2010-08-12 Waterworks Technology Development Organization Co Ltd Pipe joint and packing ring
KR101323175B1 (en) * 2011-11-17 2013-10-30 노현호 Connecting and sealing device for a plastic corrugated pipes
JP7016140B2 (en) 2017-09-12 2022-02-04 古林工業株式会社 Pipe fittings
CN110274070A (en) * 2019-05-21 2019-09-24 高邮市特种紧固件厂 A kind of sealing effect is good and the valve that is easily installed

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