JP2001208261A - Pipe joint - Google Patents
Pipe jointInfo
- Publication number
- JP2001208261A JP2001208261A JP2000017466A JP2000017466A JP2001208261A JP 2001208261 A JP2001208261 A JP 2001208261A JP 2000017466 A JP2000017466 A JP 2000017466A JP 2000017466 A JP2000017466 A JP 2000017466A JP 2001208261 A JP2001208261 A JP 2001208261A
- Authority
- JP
- Japan
- Prior art keywords
- portions
- sealing material
- pipe
- joint
- flange
- 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
Links
Landscapes
- Joints That Cut Off Fluids, And Hose Joints (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、2本の管それぞれ
の端部同士を突き合わせた状態で該管同士を接続するた
めの管継手に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint for connecting two pipes in a state where the ends of the pipes face each other.
【0002】[0002]
【従来の技術】上記管継手の一例として、例えば図10
(a),(b)に示すものがある。これは、一枚の薄い
板状体を2本の管6,6の一端部同士の接続部外面を覆
うことができるように円弧状に湾曲することができるよ
うに構成された継手本体20と、この継手本体20の両
端に管径方向外方側に突出し、かつ、一体形成された平
板状のフランジ部20A,20Aとを備え、前記継手本
体20の内面に製造時等にパッキンシート21を貼り付
け、前記湾曲させた継手本体20の両端のフランジ部2
0A,20A同士を引き寄せて締め付けるための締付具
としてのボルト22及びナット23を備えている。従っ
て、円弧状に湾曲させて管6,6の一端部同士の接続部
外面を覆った継手本体20のフランジ部20A,20A
を、ボルト22とナット23により引き寄せて締め付け
ることによって、2本の管6,6(図では1本のみ図
示)をシール処理した状態で接続することができるよう
にしている(本願発明の図1参照)。2. Description of the Related Art FIG.
(A) and (b) are shown. This is because the joint body 20 is configured so that one thin plate-like body can be curved in an arc shape so as to cover the outer surface of the connection portion between the one ends of the two tubes 6 and 6. The joint body 20 is provided with flat flange portions 20A, 20A protruding outward in the pipe diameter direction at both ends thereof and integrally formed. A packing sheet 21 is provided on the inner surface of the joint body 20 at the time of manufacturing or the like. Flange portions 2 at both ends of the joint body 20 that are attached and curved.
A bolt 22 and a nut 23 are provided as fasteners for pulling the 0A and 20A together. Accordingly, the flange portions 20A, 20A of the joint body 20 that are curved in an arc shape and cover the outer surfaces of the connection portions of the one ends of the pipes 6, 6 are provided.
The two pipes 6 and 6 (only one is shown in the figure) can be connected in a sealed state by pulling and tightening with a bolt 22 and a nut 23 (FIG. 1 of the present invention). reference).
【0003】上記構成の管継手を締め付けていくと、フ
ランジ部同士間に位置するパッキンシート21が圧縮力
を受けて弾性変形し、図10(b)に示すように弾性変
形したパッキンシート21の一部分21Aがフランジ部
20A,20Aの間から外側に逃げてしまうため、フラ
ンジ部20A,20A間におけるシールを確実に行うこ
とができず、シール不良を招く不都合があった。When the pipe joint having the above structure is tightened, the packing sheet 21 located between the flange portions is elastically deformed by receiving a compressive force, and as shown in FIG. 10 (b), the packing sheet 21 is elastically deformed. Since the portion 21A escapes outward from between the flange portions 20A, 20A, sealing between the flange portions 20A, 20A cannot be reliably performed, and there has been a problem of inferior sealing.
【0004】[0004]
【発明が解決しようとする課題】本発明が前述の状況に
鑑み、解決しようとするところは、シールを確実に行え
る管継手を提供する点にある。SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and has as its object to provide a pipe joint which can reliably perform sealing.
【0005】[0005]
【課題を解決するための手段】本発明の管継手は、前述
の課題解決のために、2本の管それぞれの端部同士を突
き合わせた状態で該両端部の外面を覆い被せるために、
両端に合わせ部をそれぞれ備えた単一の部材からなる又
は両端に合わせ部をそれぞれ備えた複数の部材を連結し
てなる継手本体と、前記継手本体の内面に備えたシール
材と、前記継手本体の合わせ部同士を引き寄せるための
締付具とを備え、前記締付具にて合わせ部同士を引き寄
せることにより圧縮力を受けたシール材が該合わせ部か
ら食み出すことを阻止する阻止手段を設けている。上記
のように阻止手段を設けることによって、シール材を継
手本体の合わせ部間で的確にシール作用させることがで
き、シール不良となることを回避することができる。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the pipe joint of the present invention is intended to cover the outer surfaces of two ends of the two pipes with the ends thereof abutting each other.
A joint body composed of a single member provided with mating portions at both ends or a plurality of members connected with mating portions at both ends, a seal member provided on an inner surface of the joint body, and the joint body A fastener for pulling together the mating portions of the sealing member, and a blocking means for preventing the sealing material subjected to the compressive force from coming out of the mating portion by drawing the mating portions together with the fastener. Provided. By providing the blocking means as described above, it is possible to cause the sealing material to properly perform the sealing action between the mating portions of the joint main body, and it is possible to avoid the occurrence of poor sealing.
【0006】前記合わせ部それぞれを、前記継手本体か
ら管径方向外方側に突出したフランジ部と、このフラン
ジ部の内面に備えるシール材の管軸芯方向両端を取り囲
む両側部と、これら両側部の管径方向外側端部同士を連
結する連結部の4つの部材から構成し、前記合わせ部に
それぞれ備えさせたシール材の間に該シール材の硬度よ
りも高硬度を有する補助シール材を配置している。上記
のようにシール材に比べて変形し難い補助シール材をシ
ール材間に配置することによって、締付具にて合わせ部
同士を引き寄せる際において、先に変形するシール材の
一部が閉じようとする合わせ部同士の隙間から食み出す
ことを補助シール材にて阻止することができる。[0006] Each of the mating portions is formed by a flange protruding outward in the pipe diameter direction from the joint body, two side parts surrounding both ends in the pipe axis center of a sealing material provided on an inner surface of the flange part, and both side parts. Auxiliary sealing material having a hardness higher than the hardness of the sealing material is disposed between the sealing materials provided in the joining portions, each of which is composed of four members of a connecting portion that connects the outer ends of the pipes in the radial direction. are doing. By arranging the auxiliary sealing material that is less likely to deform as compared to the sealing material between the sealing materials as described above, a part of the sealing material that deforms first may be closed when the fittings are pulled together by the fastener. It can be prevented by the auxiliary sealing material from protruding from the gap between the mating portions.
【0007】前記補助シール材を一方の前記シール材の
表面に一体化することによって、別体形成した補助シー
ル材を貼り付ける作業を不用にすることができるだけで
なく、貼り付け時の位置決め等も不用になる。By integrating the auxiliary sealing material on the surface of one of the sealing materials, not only can the operation of attaching the separately formed auxiliary sealing material be unnecessary, but also the positioning and the like at the time of application can be made. Become useless.
【0008】前記合わせ部のそれぞれを、前記継手本体
から管径方向外方側に突出したフランジ部から構成し、
前記2つのフランジ部を合わせた状態において一方のフ
ランジ部の外面に接当する接当部と、前記接当部の管軸
芯方向両端から延出され、かつ、フランジ部の内面側に
位置するシール材の管軸芯方向両端を取り囲む両側部
と、これら両側部の管径方向外側端部同士を連結する連
結部の4つの部材からなるカバー体を前記2つのフラン
ジ部に装着して前記阻止手段を構成することによって、
従来の継手を用いながらも、カバー体によるシール材の
食み出しを確実に阻止することができる。しかも、締め
付け前にカバー体にて両フランジ部の間の隙間を覆って
いるから、請求項2のように締め付け中において合わせ
部間の隙間が無くなる閉じ状態になる構成に比べて、シ
ール材の食み出しを確実に阻止することができると共
に、締め付け度合いを自由に変更することができる。[0008] Each of the joining portions is constituted by a flange portion projecting outward from the joint body in the pipe radial direction,
A contact portion that contacts the outer surface of one of the flange portions in a state where the two flange portions are combined, and extends from both ends in the tube axis direction of the contact portion and is located on the inner surface side of the flange portion. A cover body consisting of four members, that is, both sides surrounding both ends of the sealing material in the pipe axis direction and a connecting portion connecting the outer ends in the pipe radial direction of the both sides, is attached to the two flanges to prevent the blocking. By configuring the means,
Even though the conventional joint is used, it is possible to reliably prevent the seal member from protruding from the cover body. In addition, since the gap between the two flange portions is covered by the cover body before the tightening, the sealing member has a smaller size than the closed state in which the gap between the mating portions is eliminated during the tightening. Extrusion can be reliably prevented, and the degree of tightening can be freely changed.
【0009】前記一方の合わせ部を、前記継手本体から
管径方向外方側に突出したフランジ部と、このフランジ
部の内面に備えるシール材の管軸芯方向両端を取り囲む
両側部と、これら両側部の管径方向外側端部同士を連結
する連結部の4つの部材から構成し、他方の合わせ部
を、前記継手本体から管径方向外方側に突出したフラン
ジ部から構成し、かつ、前記一方の合わせ部に入り込み
自在に構成することによって、請求項2のように締め付
け中において合わせ部間の隙間が無くなる閉じ状態にな
る構成に比べて、シール材の食み出しを確実に阻止する
ことができると共に、締め付け度合いを自由に変更する
ことができる。又、請求項4の場合に比べて、部材点数
の削減化を図ることができるだけでなく、カバー体を取
り付ける作業を不用にすることができる。[0009] The one mating portion includes a flange protruding outward from the joint main body in the pipe radial direction, two side portions surrounding both ends of the seal member provided on the inner surface of the flange portion in the pipe axis center direction, and both sides thereof. The four ends of the connecting portion connecting the outer ends of the pipes in the radial direction of the pipe, and the other mating part is composed of a flange projecting outward from the joint body in the radial direction of the pipe, and By making it so that it can be inserted into one of the joints, it is possible to reliably prevent the sealing material from protruding, as compared with a structure in which the gap between the joints is closed during tightening as in claim 2. And the degree of tightening can be freely changed. Further, as compared with the case of the fourth aspect, not only can the number of members be reduced, but also the work of attaching the cover body can be made unnecessary.
【0010】[0010]
【発明の実施の形態】図1及び図2に、本発明の管継手
1を示している。この管継手1は、図2に2点鎖線(紙
面の広さの関係で右半分しか示していない)で示す一枚
の薄い平板状体を円弧状に湾曲させてなる継手本体2
と、この継手本体2の両端に備えた合わせ部3,3と、
前記継手本体2と合わせ部3,3の内面に貼着されたシ
ール材4(図に2点鎖線で示す平板状のものを円弧状に
湾曲させたもの)と、前記湾曲させることにより接近し
た合わせ部3,3を引き寄せるためのボルト8及びナッ
ト9(これらの構成以外でもよい)でなる締付具5とか
ら構成している。従って、シール材4を備えた継手本体
2をそれのほぼ中央部が一端部同士を管軸芯方向で突き
合わせた2本の管6,6の下面に位置する状態で敷いた
後、前記のように円弧状に湾曲させることにより、2本
の管6,6の一端部外面を覆い、次に、接近した合わせ
部3,3同士を締付具5により締め付けて、2本の管を
シール処理した状態で接続することができるようにして
いる。ここでは、継手本体2が単一の部材から構成した
ものを示しているが、図9(a)に示すように、両端に
合わせ部3,3をそれぞれ備えた半割状の2つの部材1
1,12(これら2つを同一のものから構成してもよい
し、異なるもので構成してもよい)から構成してもよい
し、又、図9(b)に示すように、両端に合わせ部3,
3をそれぞれ備えた4つの部材13,14,15,16
(これら4つを同一のものから構成してもよいし、異な
るもので構成してもよい)から構成してもよく、継手本
体2の構成部材は、管の太さや使用する場所等に応じて
変更することができる。図9(a),(b)で示してい
る他の構成は、図2のものと同一であるため、同一符号
を付すと共に、説明を省略する。又、図9(a),
(b)では、シール材4を省略している。1 and 2 show a pipe joint 1 according to the present invention. The pipe joint 1 is a joint main body 2 formed by bending a single thin flat plate-like body shown by a two-dot chain line (only the right half is shown due to the space of the paper) in FIG.
And mating portions 3, 3 provided at both ends of the joint main body 2,
The joint body 2 and the sealing material 4 (the flat plate shown by a two-dot chain line in the figure, which is curved in an arc shape) adhered to the inner surfaces of the joining portions 3 and 3 were brought closer to each other by the bending. It comprises a bolt 8 for pulling the mating portions 3 and 3 and a fastener 5 comprising a nut 9 (other than these configurations). Therefore, after laying the joint main body 2 provided with the sealing material 4 in a state where the substantially central portion thereof is located on the lower surfaces of the two tubes 6 and 6 whose one ends abut each other in the tube axis direction, as described above. The outer surfaces of the two tubes 6, 6 are covered at one end by bending them into an arc shape, and then the joined portions 3, 3 which are close to each other are tightened by the fasteners 5 to seal the two tubes. It is possible to connect in a state where it has been done. Here, the joint main body 2 is shown as being composed of a single member, but as shown in FIG. 9A, two half-shaped members 1 each having mating portions 3 at both ends are provided.
1 and 12 (these two may be made of the same material or may be made of different materials). Alternatively, as shown in FIG. Fitting part 3,
Four members 13, 14, 15, 16 each having 3
(These four members may be constituted by the same member or different members), and the components of the joint body 2 may be determined according to the thickness of the pipe or the place where the joint is used. Can be changed. The other configurations shown in FIGS. 9A and 9B are the same as those in FIG. 2, and therefore are denoted by the same reference numerals and description thereof is omitted. 9 (a),
In (b), the sealing material 4 is omitted.
【0011】前記管6は、図1に示すように、外面に凹
部6Aと凸部6B(図では矩形状になっているが、半円
形や円形あるいは三角形等でもよい)とを交互に備え、
かつ、それらが螺旋状に形成されている。前記管6とし
ては、前記のように螺旋状に構成したものの他、凹部6
Aと凸部6Bとを環状に構成したものでもよい。又、前
記凸部6Bの無いストレートな管で構成してもよい。As shown in FIG. 1, the tube 6 has concave portions 6A and convex portions 6B (rectangular, but may be semicircular, circular, or triangular in the figure) on its outer surface.
And they are formed in a spiral shape. As the tube 6, in addition to the helically configured tube as described above,
A and the convex portion 6B may be configured in a ring shape. Further, it may be constituted by a straight tube without the convex portion 6B.
【0012】前記シール材4は、ゴム又はゴムの発泡体
あるいは発泡ポリエチレン等のプラスチック発泡体等か
らなると共に、フラットなシート状(図2の2点鎖線参
照)に形成されている。このシール材4は、管の接続作
業前、例えば管継手1を製造する過程で継手本体2に備
えさせておけば、その分、管の接続作業を迅速に行うこ
とができる利点があるが、管の接続時に継手本体2に備
えさせるようにしてもよい。前記シール材4と継手本体
2との接合を、接着剤により行う他、熱融着等により行
うようにしてもよい。又、前記シール材4は、管6の凸
部6B表面に圧接されて凸部間の止水を行うことができ
るものであるが、管の凹部6Aの特定2箇所に凸部6B
よりも少し盛り上がるようにコーキング材K(図1参
照)を充填し、それらの上面にシール材4を圧接するこ
とによって、凹部間の止水を行うようにする他、シール
材4に管5の凹部5Aと凸部5Bとにそれぞれ入り込む
凸部と凹部とを備えさせておけば、前記コーキング材を
不用にすることができる利点がある。The sealing member 4 is made of rubber or a foam of rubber or a plastic foam such as foamed polyethylene, and is formed in a flat sheet shape (see a two-dot chain line in FIG. 2). If the sealing material 4 is provided in the joint body 2 before the pipe connection operation, for example, in the process of manufacturing the pipe joint 1, there is an advantage that the pipe connection operation can be performed quickly by that much. You may make it provide in the joint main body 2 at the time of a pipe connection. The bonding between the sealing member 4 and the joint body 2 may be performed by heat fusion or the like, instead of using an adhesive. The sealing member 4 is pressed against the surface of the convex portion 6B of the tube 6 to stop water between the convex portions. However, the convex portion 6B is provided at two specific portions of the concave portion 6A of the tube.
Filling the caulking material K (see FIG. 1) so that it rises slightly, and pressing the sealing material 4 on the upper surface thereof so as to stop the water between the concave portions. Providing a convex portion and a concave portion that enter the concave portion 5A and the convex portion 5B, respectively, has an advantage that the caulking material can be made unnecessary.
【0013】前記継手本体2は、一枚の平坦でかつ薄い
合成樹脂板(図2の2点鎖線参照)でなり、前記合わせ
部3,3を前記合成樹脂板の両端に一体形成することに
よって、製造面において有利になるが、金属等の他の材
料を用いて形成することもできる。前記継手本体2は、
薄く構成することによって、接続時に円弧状に湾曲させ
て使用し、非使用時に平板状のするタイプを構成するこ
とができるから、軽量化を図りながらも、平板状のまま
運搬したり保管することができ、取扱面において有利に
なるが、最初から湾曲した円弧状の継手本体2に構成し
てもよい。この場合、保形性を確保するために少し厚み
を厚くして実施することになる。図2に示す2Aは、前
記継手本体2の内面に管軸芯方向に突出形成した複数の
突起であり、これら突起2Aが管6の凹部6Bに入り込
むことによって、管継手1が管軸芯方向に不測に移動さ
れることがないようにストッパーとして作用するように
構成しているが、必ずしも必要ではない。The joint body 2 is made of a single flat and thin synthetic resin plate (see a two-dot chain line in FIG. 2), and the joining portions 3 are integrally formed at both ends of the synthetic resin plate. Although it is advantageous in terms of manufacturing, it can also be formed using other materials such as metal. The joint body 2 includes:
By making it thin, it can be used in a curved shape when connected, and it can be configured as a flat plate when not in use, so it can be transported or stored as a flat plate while reducing the weight Although this is advantageous in terms of handling, the joint body 2 may be formed in a curved arc shape from the beginning. In this case, the thickness is slightly increased in order to ensure shape retention. 2A shown in FIG. 2 are a plurality of protrusions formed on the inner surface of the joint main body 2 so as to protrude in the pipe axis direction. When these protrusions 2A enter the recesses 6B of the pipe 6, the pipe joint 1 moves in the pipe axis direction. Although it is configured to act as a stopper so that it is not accidentally moved, it is not always necessary.
【0014】前記合わせ部3,3は、同一構成であるた
め、一方の合わせ部3についてのみ説明する。つまり、
図2及び図3(a),(b),(c)に示すように、前
記継手本体2の端部に管径方向外方側に突出する平板状
のフランジ部3Aと、このフランジ部3Aの内面に備え
る前記シール材4の管軸芯方向両端を囲む平板状の両側
部3B,3Cと、これら両側部3B,3Cの管径方向外
側端部同士を連結する平板状の連結部3Dの4つの部材
からシール材4の外周縁を取り囲むように構成して、前
記締付具5により合わせ部3,3を引き寄せたときに、
シール材4の一部が合わせ部3,3から外部に食み出す
ことを両側部3B,3C及び連結部3Dの内面にて接当
阻止することができる阻止手段を構成している。図に示
す3a,3aは、前記フランジ部3Aの2箇所に形成さ
れた前記ボルト8,8の貫通孔である。Since the joining portions 3 and 3 have the same configuration, only one joining portion 3 will be described. That is,
As shown in FIGS. 2 and 3 (a), (b), and (c), a flat flange portion 3A protruding outward in the pipe diameter direction at the end of the joint body 2, and the flange portion 3A A flat plate-shaped side portion 3B, 3C surrounding both ends in the tube axis direction of the sealing material 4 provided on the inner surface of the seal member 4 and a flat plate-shaped connection portion 3D connecting the pipe radial outer ends of the both side portions 3B, 3C. It is configured so as to surround the outer peripheral edge of the sealing material 4 from the four members, and when the fitting portions 3 and 3 are drawn by the fastener 5,
A part of the sealing material 4 that protrudes outside from the mating parts 3, 3 constitutes a blocking means that can be prevented from coming into contact with the inner surfaces of the side parts 3B, 3C and the connecting part 3D. 3a, 3a shown in the figure are through holes for the bolts 8, 8 formed at two places on the flange 3A.
【0015】図2及び図3(a),(b),(c)に示
すように、前記シール材4として、例えば15°〜40
°の硬度を有したものを用い、合わせ部3,3に備えさ
せた2つのシール材4,4の間に例えば50°〜80°
の硬度を有する平板矩形状の補助シール材7を配置する
ことによって、合わせ部3,3を引き寄せている最中に
弾性変形しているシール材4,4の一部が合わせ部3,
3の間から外部に食み出すことがないようにしている。
この場合、合わせ部3,3を引き寄せている最中は、補
助シール材7が変形しないような硬度にすることが好ま
しいが、シール材4,4の一部が合わせ部3,3の間か
ら外部に食み出さない程度に少し変形する硬度であって
もよい。前記シール材4の内面4Aと合わせ部3の合わ
せ面3Eとを面一に設定したが、シール材4の内面4A
を合わせ部3の合わせ面3Eよりもフランジ部3A側に
寄った位置に設定してもよい。前記補助シール材7を一
方のシール材4の内面に接着剤又は熱融着等により予め
備えさせておくと、管の接続作業を迅速に行うことがで
きる利点がある。尚、前記シール材4,4及び補助シー
ル材7にボルト8貫通孔4a,7aを形成しておくと、
接続時に貫通孔を形成するものに比べて作業の迅速化を
図ることができる。As shown in FIGS. 2 and 3 (a), (b) and (c), the sealing material 4 is, for example, 15 ° to 40 °.
Between the two sealing members 4, 4 provided in the mating portions 3, 3, for example, 50 ° to 80 °.
By arranging the flat rectangular auxiliary seal member 7 having a hardness of 3 mm, a part of the seal members 4, 4 elastically deformed during the pulling of the joint portions 3, 3
3 so that it does not protrude outside.
In this case, it is preferable that the hardness is such that the auxiliary sealing material 7 is not deformed while the joining portions 3 and 3 are being drawn. The hardness may be such that it is slightly deformed so as not to protrude outside. The inner surface 4A of the sealing material 4 and the mating surface 3E of the mating portion 3 are set to be flush with each other.
May be set at a position closer to the flange portion 3A side than the mating surface 3E of the mating portion 3. If the auxiliary sealing material 7 is previously provided on the inner surface of one of the sealing materials 4 by an adhesive or heat fusion, there is an advantage that the pipe connection operation can be performed quickly. In addition, if the bolts 8 through holes 4a, 7a are formed in the seal members 4, 4 and the auxiliary seal member 7,
The work can be speeded up as compared with the case where a through hole is formed at the time of connection.
【0016】前記管継手1にて、2本の管6,6を接続
する場合には、前述のようにコーキング材Kを一端部同
士を突き合わせた状態の2本の管6,6(図示せず)の
端部外面の所定2箇所に充填した後、継手本体2を接続
したい管6,6の一端部同士の下面に位置させてから、
継手本体2を円弧状に湾曲させることにより、2本の管
6,6(図示せず)の端部外面に管継手1を覆い被せる
(図3(a)参照)。この後、図3(b)に示すよう
に、補助シール材7を合わせ部3,3間に配置し、ボル
ト8を補助シール材7を挟んだ合わせ部3,3間に貫通
させてからナット9に螺合させ、締め付け操作すること
により、2本の管6,6(図示せず)の接続を完了する
のである(図3(c)参照)。尚、図3(a),
(b),(c)では管6を省略している。又、前記合わ
せ部3,3を管6の直上方に位置させた場合を示してい
るが、管6に対する合わせ部3,3の位置は自由に変更
できる。When the two pipes 6 and 6 are connected by the pipe joint 1, as described above, the two pipes 6 and 6 (shown in FIG. After filling at two predetermined locations on the outer surface of the end of the pipe, the joint body 2 is positioned on the lower surface of one end of each of the pipes 6 and 6 to be connected.
By bending the joint main body 2 in an arc shape, the pipe joint 1 is covered on the outer surfaces of the ends of the two pipes 6, 6 (not shown) (see FIG. 3A). Thereafter, as shown in FIG. 3B, the auxiliary sealing material 7 is arranged between the joining portions 3 and 3, and the bolt 8 is passed through the joining portions 3 and 3 with the auxiliary sealing material 7 interposed therebetween, and then the nut is By connecting the two pipes 6 and 6 (not shown) by screwing to the pipe 9 (see FIG. 3C). In addition, FIG.
The tubes 6 are omitted in (b) and (c). Although the case where the fitting portions 3 and 3 are located immediately above the tube 6 is shown, the position of the fitting portions 3 and 3 with respect to the tube 6 can be freely changed.
【0017】前記補助シール材7をどの部位においても
同一厚みのものに構成したが、図4(a)に示すよう
に、管側ほど厚くなる断面形状台形状に構成してもよい
し、図4(b)に示すように、管径方向ほぼ中間部から
管側にかけて管側ほど厚くなる断面形状ほぼフラスコ状
に構成してもよい。図4(a),(b)に示すように構
成することによって、管側ほどシール材4の変形量を大
きくして、シール処理を確実にしながらも、シール材
4,4の一部が合わせ部3,3の間から外部に食み出す
ことを確実に阻止することができる利点がある。Although the auxiliary sealing material 7 is formed to have the same thickness at any part, as shown in FIG. 4A, the auxiliary sealing material 7 may be formed to have a cross-sectional trapezoidal shape that becomes thicker toward the tube side. As shown in FIG. 4 (b), the cross section may be formed in a substantially flask shape with a thickness increasing from the substantially middle portion to the tube side in the tube diameter direction toward the tube side. By configuring as shown in FIGS. 4 (a) and 4 (b), the amount of deformation of the sealing material 4 is increased toward the pipe side, and while the sealing process is ensured, a part of the sealing materials 4 and 4 are aligned. There is an advantage that it is possible to reliably prevent the spilling out of the space between the parts 3 and 3.
【0018】前記合わせ部3,3のそれぞれを、図5及
び図6に示すように構成してもよい。つまり継手本体2
から管径方向外方側に突出したフランジ部3Aから構成
し、前記2つのフランジ部3A,3Aを合わせた状態に
おいて一方のフランジ部3Aの外面に接当し、かつ、前
記ボルト8,8の貫通孔10a,10aが形成された接
当部10Aと、前記接当部10Aの管軸芯方向両端から
延出され、かつ、フランジ部10Aの内面側に位置する
シール材4の管軸芯方向両端を取り囲む両側部10B,
10Cと、これら両側部10B,10Cの管径方向外側
端部同士を連結する連結部10Dの4つの部材からなる
カバー体10を前記2つのフランジ部3A,3Aに装着
して前記阻止手段を構成している。この場合には、ボル
ト8を締め付ける前にカバー体10にて両フランジ部3
A,3Aの間の隙間を覆っているから、図3(a),
(b),(c)で示したように締め付け中において合わ
せ部3,3の合わせ面3E,3E間の隙間が無くなるよ
うに接近移動させる構成の場合に必要であった補助シー
ル材7を不用にすることができながらも、合わせ部3,
3からのシール材4の食み出しを確実に阻止することが
できると共に、締め付け度合いを自由に変更することが
できる利点がある。図5及び図6において説明しなかっ
た他の構成は、図2のものと同一であるため、同一符号
を付すと共に、説明を省略している。Each of the joining portions 3 and 3 may be configured as shown in FIGS. That is, the joint body 2
A flange portion 3A protruding outward in the pipe diameter direction from the outside, and abuts on the outer surface of one flange portion 3A in a state where the two flange portions 3A, 3A are put together, and the bolts 8, 8 A contact portion 10A in which the through holes 10a are formed, and a tube core direction of the sealing material 4 extending from both ends of the contact portion 10A in the tube axis direction and located on the inner surface side of the flange portion 10A. Both sides 10B surrounding both ends,
10C and a cover body 10 composed of four members of a connecting portion 10D connecting the outer ends in the pipe diameter direction of both side portions 10B, 10C to the two flange portions 3A, 3A to constitute the blocking means. are doing. In this case, before the bolt 8 is tightened, the two flange portions 3
3A, 3A because the space between A and 3A is covered.
As shown in (b) and (c), the auxiliary sealing material 7 which is necessary in the case of the structure in which the gaps between the mating surfaces 3E and 3E of the mating portions 3 and 3E during the tightening are eliminated so as to be eliminated is unnecessary. But the matching part 3,
There is an advantage that the protrusion of the sealing material 4 from the portion 3 can be reliably prevented and the degree of tightening can be freely changed. The other components not described in FIGS. 5 and 6 are the same as those in FIG. 2, and thus are denoted by the same reference numerals and description thereof is omitted.
【0019】又、前記合わせ部3,3を、図7及び図8
に示すように構成してもよい。つまり、一方の合わせ部
3を、前記継手本体2から管径方向外方側に突出したフ
ランジ部3Aと、このフランジ部3Aの内面に備えるシ
ール材4の管軸芯方向両端を取り囲む両側部3B,3C
と、これら両側部3B,3Cの管径方向外側端部同士を
連結する連結部3Dの4つの部材から構成し、他方の合
わせ部3を、前記継手本体2から管径方向外方側に突出
したフランジ部3Aから構成し、かつ、前記一方の合わ
せ部3Aに入り込み自在な寸法に構成することによっ
て、図3(a),(b),(c)で示したように締め付
け中において合わせ部3,3の合わせ面3E,3E間の
隙間が無くなるように接近移動させる構成の場合に必要
であった補助シール材7を不用にすることができながら
も、合わせ部3,3からのシール材4の食み出しを確実
に阻止することができると共に、締め付け度合いを自由
に変更することができる利点がある。又、図5及び図6
で示したカバー体10を設ける場合に比べて、部材点数
の削減化を図ることができるだけでなく、カバー体10
を取り付ける作業を不用にすることができる利点があ
る。図5及び図6において説明しなかった他の構成は、
図2のものと同一であるため、同一符号を付すと共に、
説明を省略している。尚、図6及び図8に、フランジ部
3A,3Aの内面のそれぞれにシール材4を備えさせた
場合を示しているが、一方のフランジ部3Aの内面のシ
ール材4を省略して実施することもできる。Further, the joining portions 3 and 3 are connected to each other as shown in FIGS.
May be configured as shown in FIG. That is, one of the mating portions 3 is formed by a flange portion 3A protruding outward from the joint body 2 in the pipe diameter direction, and both side portions 3B surrounding both ends in the pipe axis direction of the sealing material 4 provided on the inner surface of the flange portion 3A. , 3C
And four connecting members 3D for connecting the outer ends of these two side portions 3B and 3C in the radial direction of the tube, and the other mating portion 3 projects outward from the joint body 2 in the radial direction of the tube. As shown in FIGS. 3 (a), 3 (b) and 3 (c), the flange portion 3A is formed so that it can enter the one mating portion 3A. The sealing material from the mating portions 3 and 3 can be made unnecessary, although the auxiliary sealing material 7 required in the case of the structure in which the gaps between the mating surfaces 3E and 3E of the mating surfaces 3E and 3E are moved away from each other can be made unnecessary. There is an advantage that the protrusion of No. 4 can be reliably prevented and the degree of tightening can be freely changed. 5 and 6
The number of members can be reduced as compared with the case where the cover body 10 is provided as shown in FIG.
There is an advantage that the operation of attaching the helmet can be made unnecessary. Other configurations not described in FIGS. 5 and 6 are:
Since it is the same as that of FIG.
Description is omitted. Although FIGS. 6 and 8 show the case where the sealing material 4 is provided on each of the inner surfaces of the flange portions 3A, 3A, the sealing material 4 on the inner surface of one of the flange portions 3A is omitted. You can also.
【0020】[0020]
【発明の効果】請求項1によれば、締付具にて合わせ部
同士を引き寄せることにより圧縮力を受けたシール材が
合わせ部から食み出すことを阻止する阻止手段を設ける
ことによって、シール材を継手本体の合わせ部間で的確
にシール作用させることができ、シール不良となること
を回避することができる管継手を提供することができ
る。According to the first aspect of the present invention, the sealing member is provided by preventing the sealing material, which has been subjected to the compressive force by pulling the mating portions together with the fastening tool, out of the mating portion. A pipe joint can be provided in which a material can be properly sealed between mating portions of a joint main body, and a sealing failure can be avoided.
【0021】請求項2によれば、合わせ部それぞれを、
シール材の外周縁を覆うための4つの部材から構成し、
合わせ部にそれぞれ備えさせたシール材の間にシール材
の硬度よりも変形し難い高硬度を有する補助シール材を
配置することによって、締付具にて合わせ部同士を引き
寄せる際において、先に変形するシール材の一部が閉じ
ようとする合わせ部同士の隙間から食み出すことを補助
シール材にて確実に阻止することができる。According to the second aspect, each of the joining portions is
Consisting of four members for covering the outer peripheral edge of the sealing material,
By arranging an auxiliary sealing material with high hardness that is less likely to be deformed than the hardness of the sealing material between the sealing materials provided in each of the fitting parts, it deforms first when the fitting parts are pulled together by the fastener. The auxiliary sealing material can reliably prevent the part of the sealing material to be protruded from the gap between the mating portions to be closed.
【0022】請求項3によれば、補助シール材を一方の
シール材の表面に一体化することによって、別体形成し
た補助シール材を貼り付ける作業を不用にすることがで
きるだけでなく、貼り付け時の位置決め等も不用にな
り、接続作業の迅速化を図ることができる。According to the third aspect, by integrating the auxiliary sealing material on the surface of one of the sealing materials, not only can the operation of attaching the separately formed auxiliary sealing material be unnecessary, but also the attaching operation can be performed. Positioning or the like at the time becomes unnecessary, and the connection work can be sped up.
【0023】請求項4によれば、合わせ部のそれぞれ
を、シール材の外周縁を覆うための4つの部材からなる
カバー体とし、このカバー体を2つのフランジ部に装着
して阻止手段を構成することによって、従来の継手を用
いながらも、カバー体によるシール材の食み出しを確実
に阻止することができる。しかも、締め付け前にカバー
体にて両フランジ部の間の隙間を覆っているから、請求
項2のように締め付け中において合わせ部間の隙間が無
くなる閉じ状態になる構成に比べて、シール材の食み出
しを確実に阻止することができると共に、締め付け度合
いを自由に変更することができ、シール面及び使用面の
両方において有利になる。According to the fourth aspect, each of the joining portions is a cover member composed of four members for covering the outer peripheral edge of the sealing material, and the cover members are attached to the two flange portions to constitute the blocking means. By doing so, it is possible to reliably prevent the seal member from being protruded by the cover body while using the conventional joint. In addition, since the gap between the two flange portions is covered by the cover body before the tightening, the sealing member has a smaller size than the closed state in which the gap between the mating portions is eliminated during the tightening. Extrusion can be reliably prevented, and the degree of tightening can be freely changed, which is advantageous in both the sealing surface and the use surface.
【0024】請求項5によれば、一方の合わせ部を、シ
ール材の外周縁を覆うための4つの部材から構成し、他
方の合わせ部を、継手本体から管径方向外方側に突出し
たフランジ部から構成し、かつ、一方の合わせ部に入り
込み自在に構成することによって、請求項2のように締
め付け中において合わせ部間の隙間が無くなる閉じ状態
になる構成に比べて、シール材の食み出しを確実に阻止
することができると共に、締め付け度合いを自由に変更
することができ、請求項4と同様にシール面及び使用面
の両方において有利になる。又、請求項4の場合に比べ
て、部材点数の削減化を図ることができるだけでなく、
カバー体を取り付ける作業を不用にすることができ、コ
スト面及び接続作業面において有利になる。According to the fifth aspect, one of the mating portions is composed of four members for covering the outer peripheral edge of the sealing material, and the other mating portion projects outward from the joint body in the pipe radial direction. The seal member is made of a flange portion and is configured to be able to enter one of the joining portions so that the gap between the joining portions is eliminated during tightening. The protrusion can be reliably prevented, and the degree of tightening can be freely changed, which is advantageous in both the sealing surface and the use surface as in the fourth aspect. Further, as compared with the case of claim 4, not only can the number of members be reduced,
The work of attaching the cover body can be made unnecessary, which is advantageous in terms of cost and connection work.
【図1】管継手により2本の管を接続した状態を示す断
面図である。FIG. 1 is a cross-sectional view showing a state where two pipes are connected by a pipe joint.
【図2】管継手の分解斜視図である。FIG. 2 is an exploded perspective view of a pipe joint.
【図3】管継手の合わせ部の断面図を示しており、
(a)は、合わせ部を接近させた状態を示し、(b)
は、合わせ部にボルトとナットを装着する直前の状態を
示し、(c)は、合わせ部をボルトとナットにより締め
付けた状態を示している。FIG. 3 is a sectional view of a fitting portion of the pipe joint,
(A) shows a state in which the joining portion is brought closer, and (b)
Shows a state immediately before the bolt and the nut are attached to the joint, and (c) shows a state where the joint is tightened by the bolt and the nut.
【図4】(a),(b)は、補助シール材の他の形状を
示す断面図である。FIGS. 4A and 4B are cross-sectional views showing other shapes of the auxiliary sealing material.
【図5】管継手の別の構成の合わせ部を示す分解斜視図
である。FIG. 5 is an exploded perspective view showing a mating portion of another configuration of the pipe joint.
【図6】図5の管継手の合わせ部を締め付けた状態を示
す断面図である。FIG. 6 is a cross-sectional view showing a state where a fitting portion of the pipe joint of FIG. 5 is tightened.
【図7】管継手の別の構成の合わせ部を示す分解斜視図
である。FIG. 7 is an exploded perspective view showing a mating portion of another configuration of the pipe joint.
【図8】図7の管継手の合わせ部を締め付けた状態を示
す断面図である。FIG. 8 is a cross-sectional view showing a state where a fitting portion of the pipe joint of FIG. 7 is tightened.
【図9】別の管継手の構成を示す正面図であり、(a)
は、2つの部材からなるものを示し、(b)は、4つの
部材からなるものを示している。FIG. 9 is a front view showing the configuration of another pipe joint, and FIG.
Indicates a member composed of two members, and (b) indicates a member composed of four members.
【図10】管継手の従来例を示す正面図であり、(a)
は、締付具にて締め付ける直前の状態を示し、(b)
は、締付具にて締め付けた後の状態を示している。FIG. 10 is a front view showing a conventional example of a pipe joint, and FIG.
Indicates a state immediately before fastening with a fastener, and (b)
Shows the state after fastening with the fastener.
1 管継手 2 継手本体 2A 突起 3 合わせ部 3A フランジ部 3B,3C 両側部 3D 連結部 3E 合わせ面 4 シール材 4A 内面 4a 貫通孔 5 締付具 6 管 6A 凹部 6B 凸部 7 補助シール材 7a 貫通孔 8 ボルト 9 ナット 10 カバー体 10A 接当部 10B,10C 両側部 10D 連結部 10a 貫通孔 11〜16 部材 20 継手本体 20A フランジ部 21 パッキンシート 21A 一部分 22 ボルト 23 ナット K コーキング材 DESCRIPTION OF SYMBOLS 1 Fitting 2 Fitting body 2A Projection 3 Fitting part 3A Flange part 3B, 3C Both sides 3D Connecting part 3E Fitting surface 4 Seal material 4A Inner surface 4a Through hole 5 Fastening tool 6 Pipe 6A Concave part 6B Convex part 7 Auxiliary seal material 7a Penetration Hole 8 Bolt 9 Nut 10 Cover body 10A Contact part 10B, 10C Both sides 10D Connecting part 10a Through hole 11-16 Member 20 Joint body 20A Flange 21 Packing sheet 21A Part 22 Bolt 23 Nut K Caulking material
Claims (5)
せた状態で該両端部の外面を覆い被せるために、両端に
合わせ部をそれぞれ備えた単一の部材からなる又は両端
に合わせ部をそれぞれ備えた複数の部材を連結してなる
継手本体と、前記継手本体の内面に備えたシール材と、
前記継手本体の合わせ部同士を引き寄せるための締付具
とを備え、前記締付具にて合わせ部同士を引き寄せるこ
とにより圧縮力を受けたシール材が該合わせ部から食み
出すことを阻止する阻止手段を設けたことを特徴とする
管継手。1. A single member having mating portions at both ends or a mating portion at both ends for covering the outer surfaces of both ends with the ends of the two tubes abutting each other. A joint body formed by connecting a plurality of members provided respectively, and a sealing material provided on an inner surface of the joint body,
A fastener for pulling together the mating portions of the joint body, and preventing the sealing material subjected to the compressive force from protruding from the mating portion by drawing the mating portions together with the fastener. A pipe joint, comprising a blocking means.
から管径方向外方側に突出したフランジ部と、このフラ
ンジ部の内面に備えるシール材の管軸芯方向両端を取り
囲む両側部と、これら両側部の管径方向外側端部同士を
連結する連結部の4つの部材から構成し、前記合わせ部
にそれぞれ備えさせたシール材の間に該シール材の硬度
よりも高硬度を有する補助シール材を配置してなる請求
項1記載の管継手。2. A flange part projecting outward from the joint main body in the pipe diameter direction, two side parts surrounding both ends of a sealing material provided on an inner surface of the flange part in a pipe axis direction, and Auxiliary sealing material having a hardness higher than the hardness of the sealing material between the sealing materials provided in the joining portions, each of which is composed of four members of a connecting portion connecting the radially outer ends of the pipes on both sides. The pipe joint according to claim 1, wherein
の表面に一体化してなる請求項2記載の管継手。3. The pipe joint according to claim 2, wherein said auxiliary sealing material is integrated with a surface of one of said sealing materials.
体から管径方向外方側に突出したフランジ部から構成
し、前記2つのフランジ部を合わせた状態において一方
のフランジ部の外面に接当する接当部と、前記接当部の
管軸芯方向両端から延出され、かつ、フランジ部の内面
側に位置するシール材の管軸芯方向両端を取り囲む両側
部と、これら両側部の管径方向外側端部同士を連結する
連結部の4つの部材からなるカバー体を前記2つのフラ
ンジ部に装着して前記阻止手段を構成してなる請求項1
記載の管継手。4. Each of the joining portions is constituted by a flange portion projecting outward in the pipe diameter direction from the joint body, and abuts on an outer surface of one of the flange portions in a state where the two flange portions are joined. Contacting portions, two side portions extending from both ends in the tube axis direction of the contact portion and surrounding both ends in the tube axis direction of the sealing material located on the inner surface side of the flange portion, and tubes on these both side portions. 2. The blocking means comprising a cover body comprising four members of a connecting portion connecting radially outer end portions to the two flange portions.
The described pipe fitting.
ら管径方向外方側に突出したフランジ部と、このフラン
ジ部の内面に備えるシール材の管軸芯方向両端を取り囲
む両側部と、これら両側部の管径方向外側端部同士を連
結する連結部の4つの部材から構成し、他方の合わせ部
を、前記継手本体から管径方向外方側に突出したフラン
ジ部から構成し、かつ、前記一方の合わせ部に入り込み
自在に構成してなる請求項1記載の管継手。5. A flange part projecting outward from the joint main body in the pipe radial direction, one side part surrounding both ends of a sealing material provided on an inner surface of the flange part in a pipe axis direction, and These two side portions are formed of four members of a connecting portion that connects the outer ends of the tubes in the radial direction, and the other mating portion is formed of a flange portion projecting outward in the radial direction of the tube from the joint body, and 2. The pipe joint according to claim 1, wherein said pipe joint is configured so as to be able to enter said one mating portion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000017466A JP2001208261A (en) | 2000-01-26 | 2000-01-26 | Pipe joint |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000017466A JP2001208261A (en) | 2000-01-26 | 2000-01-26 | Pipe joint |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2001208261A true JP2001208261A (en) | 2001-08-03 |
Family
ID=18544460
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000017466A Pending JP2001208261A (en) | 2000-01-26 | 2000-01-26 | Pipe joint |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2001208261A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014214758A (en) * | 2013-04-22 | 2014-11-17 | 日本ヴィクトリック株式会社 | Pipe joint |
-
2000
- 2000-01-26 JP JP2000017466A patent/JP2001208261A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014214758A (en) * | 2013-04-22 | 2014-11-17 | 日本ヴィクトリック株式会社 | Pipe joint |
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