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JP2004162855A - Pressing ring for pipe joint and pipe joint - Google Patents

Pressing ring for pipe joint and pipe joint Download PDF

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Publication number
JP2004162855A
JP2004162855A JP2002331442A JP2002331442A JP2004162855A JP 2004162855 A JP2004162855 A JP 2004162855A JP 2002331442 A JP2002331442 A JP 2002331442A JP 2002331442 A JP2002331442 A JP 2002331442A JP 2004162855 A JP2004162855 A JP 2004162855A
Authority
JP
Japan
Prior art keywords
ring
rubber ring
pressing
pipe
pipe joint
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002331442A
Other languages
Japanese (ja)
Inventor
Toshio Toshima
敏雄 戸島
Takashi Hara
毅史 原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP2002331442A priority Critical patent/JP2004162855A/en
Publication of JP2004162855A publication Critical patent/JP2004162855A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To transport a pipe while a rubber ring and a pressing ring are set in a receive port in advance and perform speedy connection work of pipes by merely tightening the pressing ring after inserting an insertion port into the receive port. <P>SOLUTION: This pipe joint is constituted in such a way that the insertion port 3 formed in an end part of the pipe on one side is inserted into the receive port 2 formed in an end part of the pipe on the other side and the rubber ring 5 for sealing is pressed in between an inner face of the receive port 2 and an outer face of the insertion port 3 in the axial direction by the pressing ring for sealing. A side face 10a of a receive port opening of the pressing ring 10 is a tapered face 10a inclined in the direction of center from the outer periphery toward an opening side of the receive port 2. A bolt 14 screw-fitted in a screw hole 13 formed on an outer face of the receive port 2 and passing through in the radial direction is screwed in the tapered face 10a. The pressing ring 10 can move in the radial direction by tightening force of the bolt 14, and the rubber ring 5 for sealing is pressed into an innermost part of the receive port 2 in accordance with moving of the pressing ring 10. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
この発明は、管継手に関する。
【0002】
【従来の技術】
一方の管の端部に形成された受口の内部に他方の管の端部に形成された挿口が挿入される管継手の一種として、図6に示すような管継手が知られている(例えば特許文献1、特許文献2参照)。
この継手は、一方の管1の端部に形成された受口2の内部に他方の管1の端部に形成された挿口3を挿入し、受口2内面に形成された受口奥方へ向け径が小さくなるテーパ状空間4と挿口3外面との間にシール用ゴム輪5を挿入し押輪6を受口端面側から当てがい、ボルトナット7で締め付けて軸方向へ圧入しシールするように構成したものである。
【0003】
【特許文献1】
特開平10−184923号公報 図3
【0004】
【特許文献2】
特開平10−185034号公報 図3
【0005】
【発明が解決しようとする課題】
ところで、上記のような構造の管継手で管を接合する場合、押輪6や、シール用ゴム輪5を予め受口2内にセットしておくことが出来ず、管の接続毎にシール用ゴム輪5を受口2内に組み付けると共に、挿口3外面に押輪6を託した後、挿口3を受口2内に挿入し、次いで挿口3外面に沿って押輪6をずらしてシール用ゴム輪5に当接させ、フランジ8との間にボルト7を係止しナットを締め付けてシール用ゴム輪5を圧縮していく手順で行わねばならず、管接続作業に手間と時間が掛かる問題があった。
【0006】
この発明は、上記問題を解消し、受口内にゴム輪、押輪を予めセットした状態で管を運搬し、接続作業は挿口を受口内に挿入したあと押輪を締め付けるだけで管の接続を迅速に出来るようにすることを課題としてなされたものである。
【0007】
【課題を解決するための手段】
請求項1の発明は押輪に関し、受口外面から径方向へねじ込まれるセットボルトと、該セットボルト先端と当接し径方向押圧力を軸方向移動力に変換するテーパ面を有した径方向押圧ブロックと、該ブロックの前記テーパ面に接するテーパ面を有し、該斜面の接触により軸方向へ移動可能とされ、管受口奥方端がシール用ゴム輪に対する接触押圧面とされてなる軸方向押圧ブロックとからなるものである。
【0008】
この押輪は、受口外面からねじ込んだセットボルト先端に支持された径方向押圧ブロックにより、軸方向押圧ブロックとシール用ゴム輪が仮支持できるので接続作業前であってもこれらを受口内に組み込んでおくことができ、施工管理が容易になる。
【0009】
請求項2の発明は管継手に関し、一方の管の端部に形成された受口の内部に他方の管の端部に形成された挿口を挿入し、受口内面と挿口外面との間にシール用ゴム輪を押輪によって軸方向へ圧入しシールするように構成した管継手において、前記押輪の受口開口側面が受口開口側へ向け外周から中心方向へ傾斜するテーパ面とされ、該テーパ面に対して、受口外面に形成した径方向に貫通するねじ孔にねじ嵌合するボルトをねじ込み、該ボルトの締め付け力により前記押輪が径方向へ移動可能とされ、該移動に伴い前記シール用ゴム輪が受口奥方へと押圧されるように構成されたものである。
【0010】
従って、この構成によれば、管継手部にシールゴムを装着し、押輪を挿入したあとボルトを押輪のテーパ面に当接させて軽く締め付けておけば、ボルトによりシール用ゴム輪ならびに押輪が受口内に仮支持されるので、受口内に予めこれらを収納した状態で運搬することができ、接合時での面倒な操作が省略できる。また、接続に際しては受口外面からボルトを締めこんでいけば径方向へねじ込まれていくボルト先端のテーパ面に対する押圧接触により、押輪が軸方向へと移動しシール用ゴム輪が圧縮されていく。
【0011】
【発明の実施の形態】
次に、この発明の管継手の実施の形態について説明する。
図1はこの発明の実施の形態の管継手の要部拡大断面図、図2は図1のA−A線部分断面図、図3はブロック体の正面図である。
【0012】
図1において、挿口3を受容する受口2の内面には、管奥方へ行くほどテーパ状に径の小さくなる空間が設けられ、この中にシール用ゴム輪5が配置されている。
【0013】
このシール用ゴム輪5の受口開口側端面5aに対して全周にわたって均一に当接するリング状の軸方向押圧ブロック10がシール用ゴム輪5の端面5aに当接して配置される。
【0014】
この軸方向押圧ブロック10の受口開口側面10aが、受口2の開口側2aへ向け外周から中心方向へ傾斜するテーパ面とされ、このテーパ面10aに沿うテーパ面11aを有する径方向押圧ブロック11が複数個、図2に示すように軸方向押圧ブロック10の開口側面10aに沿って均等位置に配置されている。この径方向押圧ブロック11は、相互が樹脂製のリング12で環状に連結されている。
【0015】
それぞれの径方向押圧径方向押圧ブロック11には、受口2外面に形成されたねじ孔13…にねじ込まれるボルト14の先端が当接するようにされ、また、径方向押圧ブロック11のボルト14当接部は、ボルト14の位置ずれを起こさないように嵌合部15が設けられている。
【0016】
なお、上記における径方向押圧ブロック11は、ボルト14の径方向ねじ込み力を軸方向推力に変換するときに軸方向押圧ブロック10の移動を確実にするためのもので、ボルト先端だけでも十分に軸方向押圧ブロック10を移動させ得、シール用ゴム輪5を確実に軸方向へ押圧出来る場合は、径方向押圧ブロック11は不要である。
また、上記実施の形態において、軸方向押圧ブロック10の材質は径方向押圧部材11により押圧されたときに軸方向移動力に力を変換でき、かつ、シール用ゴム輪5を緊締し得る力を発揮できれば、硬質プラスチック製としても良く、さらにはシール用ゴム輪5と一体的に成形されたものを使用しても良い。
【0017】
次に上記管継手の接合方法を説明する。
図3は管継手の接合前の要部断面図、図4以下は管継手の接合手順を説明する図である。
【0018】
図3に示すように受口2内にシール用ゴム輪5を設置し、シール用ゴム輪5の開口側端面に軸方向押圧ブロック10を当接状態で設置する。
そして、軸方向押圧ブロック10のテーパ面10aに当接するように径方向押圧ブロック11を設置する。この径方向押圧ブロック11は、図2に示したように相互が樹脂製のリング12で環状に接続されているので、受口2内面に沿うように支持され、落下してしまうようなことはない。
【0019】
そして、受口2外部からボルト14をねじ孔13にねじ込み、軽く径方向押圧ブロック11を押し付けることで、軸方向押圧ブロック10、シール用ゴム輪5を仮支持しておく。
【0020】
したがって、受口2内にシール用ゴム輪5、押輪6を収納した状態で管を運搬することが可能となる。
次に、管を接続する場合、図4に示すように、挿口3をそのまま受口2内に挿入する。
【0021】
軸方向押圧ブロック10にはボルトの締め付け力が加わっておらず、シール用ゴム輪5も圧縮されていないので、挿口3は容易に挿入できる。
そして、挿口3を挿入後、図5に示すように、ボルト14を締め付ければ、径方向押圧ブロック11が軸方向押圧ブロック10のテーパ面に接触しながら径方向へ移動する。
【0022】
このとき、径方向押圧ブロック11は、ボルト14と嵌合しており管の軸方向への移動は制限されているので、軸方向押圧ブロック10が管奥方へと移動し、シール用ゴム輪5を圧縮する。したがって、全周にわたってボルトを締め付けていけば、シール用ゴム輪5は、軸方向押圧ブロック10に押されて受口2内面と挿口3外面との間に圧縮充填されシールが達成される。
【0023】
また、ボルトを締め付けていった場合、径方向押圧ブロック11が挿口3外面に当接すればそれ以上の押輪の締め付けはなくなるので、シール用ゴム輪5の過締めといった弊害も防止できる。
【0024】
なお、小径管などで、径方向押圧ブロック11を用いなくともボルト体14だけで軸方向押圧ブロック10を軸方向へ移動できる場合は、径方向押圧ブロック11を省略できる。
【0025】
【発明の効果】
この発明は以上説明したように、受口内にシール用ゴム輪と押輪を収納しボルトで仮支持することができるので、これらを予め受口内に収納した状態で運搬保管することができ、また、管接続作業時にはシール用ゴム輪は全く軸方向に圧縮されていないので挿口挿入時の抵抗が少なく、管接続作業が容易に行え、また管接続後は、管の外側から径方向へボルトを締め込んでいけばよいだけであるので作業がしやすく、迅速かつ確実に管継手の接続作業が出来るといった効果を有する。
【図面の簡単な説明】
【図1】この発明の実施の形態である管継手の要部断面図である。
【図2】図1のA−A線矢視断面図である。
【図3】この発明の実施の形態である管継手の接続前の状態を示す要部断面図である。
【図4】この発明の実施の形態である管継手の接続状態を示す要部断面図である。
【図5】管継手の接合終了状態を示す断面図である。
【図6】従来の継手を示した要部断面図である。
【符号の説明】
1 管
2 受口
3 挿口
4 テーパ上空間
5 シール用ゴム輪
6 従来例の押輪
7 ボルトナット
8 フランジ
10 軸方向押圧ブロック
11 径方向押圧ブロック
13 ねじ孔
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pipe joint.
[0002]
[Prior art]
As one type of a pipe joint in which an insertion hole formed at the end of the other pipe is inserted into a socket formed at the end of one pipe, a pipe joint as shown in FIG. 6 is known. (For example, see Patent Documents 1 and 2).
In this joint, an insertion port 3 formed at an end of the other pipe 1 is inserted into a reception port 2 formed at an end of one pipe 1, and a reception port formed on an inner surface of the reception port 2. The rubber ring 5 for sealing is inserted between the tapered space 4 having a smaller diameter toward the outside and the outer surface of the insertion opening 3, the pressing ring 6 is applied from the end face of the receiving opening, tightened with the bolt nut 7, and pressed in the axial direction to seal. It is configured so that
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. H10-184923 FIG.
[0004]
[Patent Document 2]
JP, 10-185034, A
[0005]
[Problems to be solved by the invention]
By the way, when the pipes are joined with the pipe joint having the above structure, the pressing ring 6 and the sealing rubber ring 5 cannot be set in the receiving port 2 in advance, and each time the pipes are connected, the sealing rubber ring 5 cannot be set. After assembling the ring 5 into the socket 2 and placing the pressing ring 6 on the outer surface of the insertion port 3, insert the insertion port 3 into the receiving port 2, and then slide the pressing ring 6 along the outer surface of the insertion port 3 for sealing. The procedure must be performed in such a manner that the rubber ring 5 is brought into contact with the rubber ring 5, the bolt 7 is locked between the flange 8 and the nut, and the sealing rubber ring 5 is compressed by tightening the nut. There was a problem.
[0006]
The present invention solves the above-described problem, and transports a pipe with a rubber ring and a press ring set in a socket in advance, and quickly connects the pipes by simply tightening the push ring after inserting the insertion port into the socket. The task was to be able to do so.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 relates to a pressing wheel, and includes a set bolt screwed in a radial direction from an outer surface of a receiving port, and a radial pressing block having a tapered surface that comes into contact with a tip of the set bolt and converts a radial pressing force into an axial moving force. And a taper surface that is in contact with the tapered surface of the block, and can be moved in the axial direction by the contact of the slope, and an axial pressing in which the inner end of the pipe receiving port is a contact pressing surface against a rubber ring for sealing. It consists of blocks.
[0008]
Since this pressing ring can temporarily support the axial pressing block and the rubber ring for sealing by the radial pressing block supported on the tip of the set bolt screwed from the outer surface of the receiving port, they are incorporated in the receiving port even before the connection work. And the construction management becomes easy.
[0009]
The invention according to claim 2 relates to a pipe joint, wherein an insertion opening formed at an end of the other pipe is inserted into a reception opening formed at an end of one pipe, and a connection between an inner surface of the reception opening and an outer surface of the insertion opening is formed. In a pipe joint configured to press-fit a sealing rubber ring in the axial direction by a pressing ring to seal therebetween, a receiving opening side surface of the pressing ring is formed as a tapered surface inclined from the outer circumference toward the center toward the receiving opening side, With respect to the tapered surface, a bolt is screwed into a threaded hole formed in the outer surface of the receiving hole and penetrated in the radial direction, and the pressing ring can be moved in the radial direction by the tightening force of the bolt. The sealing rubber ring is configured to be pressed toward the back of the receiving port.
[0010]
Therefore, according to this configuration, the seal rubber is mounted on the fitting, and after inserting the pressing ring, the bolt is brought into contact with the tapered surface of the pressing ring and lightly tightened. Since these are temporarily supported, they can be transported in a state where they are stored in the receiving port in advance, and a troublesome operation at the time of joining can be omitted. When the bolt is tightened from the outer surface of the socket at the time of connection, the pressing ring moves in the axial direction due to the pressure contact with the tapered surface of the bolt tip that is screwed in the radial direction, and the rubber ring for sealing is compressed .
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the pipe joint of the present invention will be described.
FIG. 1 is an enlarged sectional view of a main part of a pipe joint according to an embodiment of the present invention, FIG. 2 is a partial sectional view taken along line AA of FIG. 1, and FIG. 3 is a front view of a block body.
[0012]
In FIG. 1, a space is provided on the inner surface of the receiving port 2 that receives the insertion port 3, with a tapered shape having a diameter decreasing toward the inside of the pipe, and a sealing rubber ring 5 is disposed therein.
[0013]
A ring-shaped axial pressing block 10 that uniformly contacts the end face 5a of the sealing rubber ring 5 on the receiving opening side is arranged in contact with the end face 5a of the sealing rubber ring 5.
[0014]
The receiving opening side surface 10a of the axial pressing block 10 is a tapered surface inclined from the outer periphery toward the center toward the opening side 2a of the receiving port 2, and a radial pressing block having a tapered surface 11a along the tapered surface 10a. As shown in FIG. 2, a plurality of reference numerals 11 are arranged at equal positions along the opening side surface 10a of the axial pressing block 10. The radial pressing blocks 11 are connected to each other in a ring shape by a resin ring 12.
[0015]
The tip of a bolt 14 screwed into a screw hole 13 formed on the outer surface of the receiving port 2 is brought into contact with each radial pressing block 11. The contact portion is provided with a fitting portion 15 so as not to cause a displacement of the bolt 14.
[0016]
The radial pressing block 11 described above is for ensuring the movement of the axial pressing block 10 when converting the radial screwing force of the bolt 14 into the axial thrust. If the directional pressing block 10 can be moved and the sealing rubber ring 5 can be reliably pressed in the axial direction, the radial pressing block 11 is unnecessary.
In the above embodiment, the material of the axial pressing block 10 is capable of converting a force into an axial moving force when pressed by the radial pressing member 11, and a force capable of tightening the sealing rubber ring 5. If it can be exhibited, it may be made of a hard plastic, or may be one integrally formed with the sealing rubber ring 5.
[0017]
Next, a method of joining the above pipe joints will be described.
FIG. 3 is a sectional view of a main part before joining of the pipe joint, and FIGS.
[0018]
As shown in FIG. 3, a sealing rubber ring 5 is installed in the receiving port 2, and an axial pressing block 10 is installed on an end face on the opening side of the sealing rubber ring 5 in an abutting state.
Then, the radial pressing block 11 is set so as to contact the tapered surface 10a of the axial pressing block 10. Since the radial pressing blocks 11 are connected to each other in an annular shape by a resin ring 12 as shown in FIG. 2, the radial pressing blocks 11 are supported along the inner surface of the receptacle 2 and do not fall. Absent.
[0019]
Then, the bolt 14 is screwed into the screw hole 13 from the outside of the socket 2 and the radial pressing block 11 is lightly pressed to temporarily support the axial pressing block 10 and the sealing rubber ring 5.
[0020]
Therefore, the pipe can be transported in a state where the sealing rubber ring 5 and the pressing ring 6 are stored in the receiving port 2.
Next, when connecting a pipe, the insertion port 3 is directly inserted into the receiving port 2 as shown in FIG.
[0021]
Since the bolt pressing force is not applied to the axial pressing block 10 and the sealing rubber ring 5 is not compressed, the insertion opening 3 can be easily inserted.
When the bolt 14 is tightened as shown in FIG. 5 after the insertion opening 3 is inserted, the radial pressing block 11 moves in the radial direction while contacting the tapered surface of the axial pressing block 10.
[0022]
At this time, since the radial pressing block 11 is fitted with the bolt 14 and the movement of the pipe in the axial direction is restricted, the axial pressing block 10 moves to the back of the pipe, and the rubber ring 5 for sealing. Compress. Therefore, if the bolts are tightened over the entire circumference, the sealing rubber ring 5 is pressed by the axial pressing block 10 and is compressed and filled between the inner surface of the receiving port 2 and the outer surface of the insertion port 3 to achieve a seal.
[0023]
Further, when the bolt is tightened, if the radial pressing block 11 comes into contact with the outer surface of the insertion opening 3, no further tightening of the pressing ring is necessary, so that the adverse effect such as excessive tightening of the sealing rubber ring 5 can be prevented.
[0024]
In the case where the axial pressing block 10 can be moved in the axial direction only by the bolt body 14 without using the radial pressing block 11 such as a small diameter pipe, the radial pressing block 11 can be omitted.
[0025]
【The invention's effect】
As described above, since the sealing rubber ring and the pressing ring can be stored and temporarily supported by bolts in the socket as described above, these can be transported and stored in a state where they are stored in the socket in advance, At the time of pipe connection work, the rubber ring for sealing is not compressed in the axial direction at all, so there is little resistance at the time of insertion of the insertion hole, pipe connection work can be done easily, and after connecting the pipe, bolts from the outside of the pipe in the radial direction Since it is only necessary to tighten them, the work is easy, and there is an effect that the connection work of the pipe joint can be performed quickly and reliably.
[Brief description of the drawings]
FIG. 1 is a sectional view of a main part of a pipe joint according to an embodiment of the present invention.
FIG. 2 is a sectional view taken along line AA of FIG. 1;
FIG. 3 is a fragmentary cross-sectional view showing a state before connection of the pipe joint according to the embodiment of the present invention;
FIG. 4 is a fragmentary cross-sectional view showing a connection state of the pipe joint according to the embodiment of the present invention.
FIG. 5 is a cross-sectional view showing a state where the joining of the pipe joint is completed.
FIG. 6 is a sectional view of a main part showing a conventional joint.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pipe 2 Reception opening 3 Insertion opening 4 Taper upper space 5 Rubber ring for sealing 6 Conventional press ring 7 Bolt and nut 8 Flange 10 Axial pressing block 11 Radial pressing block 13 Screw hole

Claims (2)

受口外面から径方向へねじ込まれるセットボルトと、該セットボルト先端と当接し径方向押圧力を軸方向移動力に変換するテーパ面を有した径方向押圧ブロックと、該ブロックの前記テーパ面に接するテーパ面を有し、該斜面の接触により軸方向へ移動可能とされ、管受口奥方端がシール用ゴム輪に対する接触押圧面とされてなる軸方向押圧ブロックとからなる管継手の押輪。A set bolt that is screwed in the radial direction from the outer surface of the receiving port, a radial pressing block having a tapered surface that comes into contact with the set bolt tip and converts the radial pressing force into an axial moving force, and the tapered surface of the block. A push ring for a pipe joint, comprising: an axial pressing block having a tapered surface in contact with the slanted surface, the axially movable block being movable in the axial direction by the contact of the inclined surface, and the inner end of the pipe receiving port serving as a contact pressing surface against a rubber ring for sealing. 一方の管の端部に形成された受口の内部に他方の管の端部に形成された挿口を挿入し、受口内面と挿口外面との間にシール用ゴム輪を押輪によって軸方向へ圧入しシールするように構成した管継手において、前記押輪のシール用ゴム輪を押圧する軸方向押圧ブロックの受口開口側面が受口開口側へ向け外周から中心方向へ傾斜するテーパ面とされ、該テーパ面に対して、受口外面に形成した径方向に貫通するねじ孔にねじ嵌合するボルトをねじ込み、該ボルトの締め付け力により、前記軸方向押圧ブロックを受口奥方へと移動させ、該移動に伴い前記シール用ゴム輪を受口奥方へと押圧するように構成した管継手。The insertion hole formed at the end of the other tube is inserted into the reception hole formed at the end of one tube, and a rubber ring for sealing is pressed between the inner surface of the reception hole and the outer surface of the insertion hole by the pressing ring. In a pipe joint configured to be press-fitted and sealed in a direction, a receiving opening side surface of an axial pressing block that presses a sealing rubber ring of the pressing ring has a tapered surface inclined from the outer periphery toward the center toward the receiving opening side. Then, with respect to the tapered surface, a bolt which is screwed into a screw hole formed in the outer surface of the receiving hole and which penetrates in the radial direction is screwed in, and the axial pressing block is moved to the back of the receiving hole by the tightening force of the bolt. And a pipe joint configured to press the sealing rubber ring toward the back of the socket with the movement.
JP2002331442A 2002-11-15 2002-11-15 Pressing ring for pipe joint and pipe joint Pending JP2004162855A (en)

Priority Applications (1)

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JP2002331442A JP2004162855A (en) 2002-11-15 2002-11-15 Pressing ring for pipe joint and pipe joint

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JP2002331442A JP2004162855A (en) 2002-11-15 2002-11-15 Pressing ring for pipe joint and pipe joint

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JP2004162855A true JP2004162855A (en) 2004-06-10

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100927166B1 (en) 2009-05-08 2009-11-18 현대주철산업 주식회사 Socket for connecting a pipe with another pipe
JP2010190374A (en) * 2009-02-20 2010-09-02 Sekisui Chem Co Ltd Joint for connecting different type pipe
CN110726017A (en) * 2019-09-23 2020-01-24 川消消防工程有限公司 Fire-fighting pipe fitting and connecting structure thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0669574U (en) * 1993-03-16 1994-09-30 株式会社栗本鐵工所 Cast iron pipe mechanical coupling
JPH09144962A (en) * 1995-11-27 1997-06-03 Suiken Technol:Kk Seal structure of fluid pipe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0669574U (en) * 1993-03-16 1994-09-30 株式会社栗本鐵工所 Cast iron pipe mechanical coupling
JPH09144962A (en) * 1995-11-27 1997-06-03 Suiken Technol:Kk Seal structure of fluid pipe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010190374A (en) * 2009-02-20 2010-09-02 Sekisui Chem Co Ltd Joint for connecting different type pipe
KR100927166B1 (en) 2009-05-08 2009-11-18 현대주철산업 주식회사 Socket for connecting a pipe with another pipe
CN110726017A (en) * 2019-09-23 2020-01-24 川消消防工程有限公司 Fire-fighting pipe fitting and connecting structure thereof

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