JPH10153291A - Branch coupling for pipeline - Google Patents
Branch coupling for pipelineInfo
- Publication number
- JPH10153291A JPH10153291A JP31157796A JP31157796A JPH10153291A JP H10153291 A JPH10153291 A JP H10153291A JP 31157796 A JP31157796 A JP 31157796A JP 31157796 A JP31157796 A JP 31157796A JP H10153291 A JPH10153291 A JP H10153291A
- Authority
- JP
- Japan
- Prior art keywords
- branch
- leg
- joint
- nut
- fixed
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/04—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor
- F16L41/06—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor making use of attaching means embracing the pipe
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば都市ガスの
本管等から分岐管（供内管）を取り出す際に、この取り
出し部分に用いられる継手に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint used for a take-out portion when taking out a branch pipe (service pipe) from a main pipe of city gas, for example.
【０００２】[0002]
【従来の技術】都市ガスの本管から分岐管を取り出す際
に、サービスチーズを直接本管にねじ接合してこれに分
岐管を接続する方法と、溶接サドルを使用する方法と、
クランプ等を本管に取り付けた後、このクランプ等に直
接分岐管を接続するか、クランプ等にサービスチーズを
ねじ接合してこれに分岐管を接続する方法等がある。2. Description of the Related Art When a branch pipe is taken out from a main pipe of city gas, a service cheese is directly screwed to the main pipe and a branch pipe is connected thereto, and a method using a welding saddle;
After a clamp or the like is attached to the main pipe, a branch pipe may be directly connected to the clamp or the like, or a service cheese may be screwed to the clamp or the like and a branch pipe may be connected thereto.
【０００３】上記従来の分岐方法において、本管に直接
サービスチーズをねじ接合する方法の場合は耐震性等の
点に問題があり、サドルを使用する場合は溶接工事が必
要となり、クランプを利用する方法の場合は、クランプ
部分が大型化することにより、例えば作業溝を大きく掘
削する必要が生じたり、クランプの取り付けに手数がか
かると云った欠点がある。そこで、本管に長孔を穿孔
し、ここに鞍型の本体を締結部材を用いて取り付けると
共に、この本体に供給管（分岐管）を接続する方法（管
用分岐継手）が提案されている（特公平７−５８１１７
号公報参照）。[0003] In the conventional branching method described above, the method of screwing a service cheese directly to the main pipe has a problem in terms of earthquake resistance and the like. When a saddle is used, welding work is required, and a clamp is used. In the case of the method, there is a drawback that, for example, it is necessary to excavate a large working groove, and the mounting of the clamp is troublesome due to an increase in the size of the clamp portion. Therefore, there has been proposed a method (a branch joint for pipes) in which a long hole is bored in the main pipe, a saddle-shaped main body is attached thereto using a fastening member, and a supply pipe (branch pipe) is connected to the main body. Tokuhei 7-58117
Reference).
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記公報に掲
載されている公知例の場合、既設配管に長孔を穿孔する
必要があるが、長孔を穿孔するためには、例えば２ヶ所
に接近してホルソーで孔をあけたり、この２ヶ所の孔を
連続孔に加工して長孔に仕上げることが必要であり、大
変手間がかかる。又、この公知例にあっては、既設配管
内に第２締結部材が組み込まれるため、これが障害とな
ってガスの圧損を招くという問題もある。However, in the case of the known example described in the above-mentioned publication, it is necessary to drill a long hole in the existing piping. It is necessary to make a hole with a hole saw, or to process these two holes into a continuous hole to finish it into a long hole, which is very troublesome. Further, in this known example, since the second fastening member is incorporated in the existing pipe, there is a problem that this becomes an obstacle and causes a pressure loss of gas.
【０００５】本発明の目的は、既設配管には１ヶの分岐
孔をホルソー等を用いて穿孔するだけでよく、又本管内
を流れる流体の圧損が最少になるように工夫した配管用
分岐継手を提供することである。[0005] An object of the present invention is to pierce only one branch hole in an existing pipe using a forsaw or the like, and a pipe branch joint devised so as to minimize the pressure loss of a fluid flowing in the main pipe. It is to provide.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に提案する継手の構成は次のとおりである。 １．底部に既設配管に対する接続口を形成し、側方に前
記接続口に続く分岐管接続口を形成して成る継手本体
と、前記継手本体内に垂直にボルトを遊転自在に挿入す
ると共に、このボルトのネジ部に開脚用ナットをねじ込
んで成る締結手段と、前記継手本体内において、前記締
結手段の開脚用ナットを中央に配置し、この開脚用ナッ
トが上昇することにより下端側が開脚して配管に穿孔し
た分岐口の内縁に係合部が係合するように構成した固定
足と、から成る配管用分岐継手。The structure of a joint proposed to achieve the above object is as follows. 1. A joint body formed with a connection port for the existing pipe at the bottom and a branch pipe connection port following the connection port formed on the side, and a bolt is inserted vertically into the joint body in a freely rotatable manner. A fastening means in which a nut for opening the leg is screwed into the screw portion of the bolt, and a nut for opening the leg of the fastening means in the center of the joint body, and the lower end is opened by raising the nut for opening the leg. A branch joint for piping, comprising: a fixed foot configured so that an engaging portion is engaged with an inner edge of a branch port formed by legging and drilling a pipe.
【０００７】２．前記１において、継手本体の底部に形
成されている接続口は真円に形成してあり、この接続口
の周囲には配管と密着するようにＯリングが装着されて
いることを特徴とする配管用分岐継手。 ３．前記１記載の開脚用ナットは、その外形が台形を呈
していることを特徴とする配管用分岐継手。[0007] 2. In the above 1, the connection port formed at the bottom of the joint body is formed in a perfect circle, and an O-ring is attached around the connection port so as to be in close contact with the pipe. Branch joint. 3. 2. The branch joint for piping according to claim 1, wherein the outer shape of the split leg nut has a trapezoidal shape.
【０００８】４．前記１記載の固定足は、二股形状を呈
していることを特徴とする配管用分岐継手。 ５．前記１記載の固定足は、四股形状を呈していること
を特徴とする配管用分岐継手。[0008] 4. 2. The branch joint according to claim 1, wherein the fixed foot has a forked shape. 5. 2. The branch joint according to claim 1, wherein the fixed foot has a quadruple shape.
【０００９】６．前記１又は４又は５記載の固定足の内
側にはテーパー部とこれに続く係合段部が形成されてい
て、ボルトを回転させて開脚用ナットを上昇させ、固定
足を開脚させたのち、開脚用ナットの上縁が係合段部に
係合し、更に開脚用ナットが上昇すると固定足を上方に
吊り上げて固定足の係合部を分岐口の内縁に係合させる
ことができ、更にボルトを締め込んで開脚用ナットを上
昇させることにより、継手本体を配管に設けた分岐口に
固定できることを特徴とする配管用分岐継手。6. A tapered portion and an engagement step portion following the tapered portion are formed inside the fixed foot according to the above item 1, 4 or 5, and the fixed leg is opened by rotating a bolt to raise a leg opening nut. After that, when the upper edge of the split leg nut is engaged with the engaging step portion, and when the split leg nut further rises, the fixed leg is lifted upward to engage the engaging portion of the fixed leg with the inner edge of the branch port. A branch joint for piping, characterized in that the joint body can be fixed to a branch port provided in the piping by further tightening a bolt and raising a nut for opening legs.
【００１０】７．前記１又は４又は５又は６記載の固定
足は、その上部が継手本体の内側に形成された固定足支
持部により遊動自在に支持されていると共に、自重で閉
脚する方向にバランスが調整されていることを特徴とす
る配管用分岐継手。[0010] 7. The fixed foot according to the above 1 or 4 or 5 or 6 has an upper portion movably supported by a fixed foot support portion formed inside the joint body, and the balance is adjusted in a direction in which the leg is closed by its own weight. A branch joint for piping.
【００１１】８．前記１又は２記載の開脚用ナットの外
周には、固定足を等間隔で配置し、併せてナットの供廻
りを防止するための固定脚係合溝が形成されていること
を特徴とする配管用分岐継手。8. 3. The fixed leg engaging groove for disposing the fixed feet at equal intervals and preventing the nut from turning around is also formed on the outer periphery of the nut for leg opening according to 1 or 2 above. Branch joint for piping.
【００１２】９．前記１記載の継手本体の分岐管接続口
をトランジション継手構造に形成して成る配管用分岐継
手。 １０．前記１又は３又は４において、固定足の固定部の
上面に滑り止め手段を形成して成る配管用分岐継手。9. 2. A branch joint for piping, wherein the branch pipe connection port of the joint body according to the above item 1 is formed in a transition joint structure. 10. In the above 1 or 3 or 4, a branch joint for piping comprising a non-slip means formed on an upper surface of a fixed portion of a fixed foot.
【００１３】[0013]
【作用】既設配管に分岐口を穿孔し、この分岐口から閉
脚した状態の固定足の先端側を管内に挿入し、継手本体
の接続口部分を分岐口に被せるようにしてセットする。
この状態で継手本体の外からボルトを回転し、開脚用ナ
ットをボルトに沿って上昇させると、この上昇につれて
固定足が序々に開脚し、やがて分岐口の内縁に当って開
脚が止まる。The branch port is bored in the existing pipe, the distal end of the fixed foot with the legs closed from the branch port is inserted into the pipe, and the joint port of the joint body is set so as to cover the branch port.
In this state, when the bolt is rotated from the outside of the joint body and the leg-opening nut is raised along the bolt, the fixed foot gradually opens as this rises, and eventually the inner leg of the branch port stops and the leg stops. .
【００１４】更にボルトを回転すると、固定足は開脚用
ナットにより上方に吊り上げられ、やがて係合部が分岐
口の内周縁に係合して止まる。この状態でボルトを強く
締め付けることにより、継手本体は配管に固定される。
分岐管は、分岐継手本体の分岐管接続口に接続する。When the bolt is further rotated, the fixed leg is lifted upward by the nut for opening the leg, and the engaging portion is engaged with the inner peripheral edge of the branch port and then stopped. By strongly tightening the bolts in this state, the joint body is fixed to the pipe.
The branch pipe is connected to a branch pipe connection port of the branch joint body.
【００１５】次に、継手本体を配管から取り外す場合に
は、ボルトを先程とは逆回転させると、開脚用ナットが
下降し、これに連れて固定足が下降すると共に、バラン
ス（自重）で閉脚し、分岐口の内周縁から係合部が外れ
る。そこで、そのまま継手本単を上方に引き上げると継
手本体は簡単に配管から外れる。Next, when the joint body is removed from the pipe, when the bolt is rotated in the reverse direction as before, the nut for opening the leg is lowered, and the fixed foot is lowered with this, and the balance (own weight) is maintained. The legs are closed, and the engaging portion is disengaged from the inner peripheral edge of the branch port. Therefore, if the joint itself is pulled upward as it is, the joint main body is easily detached from the pipe.
【００１６】[0016]
【実施例１】図１〜図４に本発明に係る継手の実施例を
示す。この図１〜図４において、１は底面に接続口２を
形成し、上面を閉塞し、側方に分岐管接続口３を形成
し、この分岐管接続口３と前記接続口２を連通する流路
４を内部に形成して成る継手本体、５は前記継手本体１
の底面に取り付けられたＯリングである。Embodiment 1 FIGS. 1 to 4 show an embodiment of a joint according to the present invention. 1 to 4, reference numeral 1 denotes a connection port 2 formed on the bottom face, a top face closed, a branch pipe connection port 3 formed on a side, and communication between the branch pipe connection port 3 and the connection port 2. A joint body 5 having a flow passage 4 formed therein is a joint body 5.
An O-ring attached to the bottom surface of the.
【００１７】６は継手本体１の上面にＯリング８付の頭
部７を露出させ、ねじ部９側を継手本体１内に挿入した
ボルトである。１０は前記ボルト６のねじ部９に螺合さ
せた台形ナット（開脚用ナット）である。Reference numeral 6 denotes a bolt having a head 7 with an O-ring 8 exposed on the upper surface of the joint body 1 and having the thread 9 side inserted into the joint body 1. Reference numeral 10 denotes a trapezoidal nut (spreading nut) screwed into the screw portion 9 of the bolt 6.
【００１８】１１、１１ａは、継手本体１内に形成した
支持鍔１２によりその上部１３、１３ａが保持されてい
ることにより、下方が開閉自在の固定足であって、この
固定足１１、１１ａはその間に位置する台形ナット１０
が上昇する過程で台形ナット１０の外輪１０ａが固定足
１１、１１ａの内側に形成したテーパー１５、１５ａに
接して開脚する構造である。又、前記テーパー１５、１
５ａの終りの部分には、係合段部１４、１４ａが形成し
てあり、ここに台形ナット１０の角１０ｂが係合すると
固定足１１、１１ａは台形ナット１０により吊り上げら
れる構造である。１６、１６ａは固定足１１、１１ａの
下端を外方に折り曲げて形成した係合部である。図２に
おいて、１９はスティフナー、１９ａはＯリング、図
１、図２において、２０は既設配管、２１は分岐口、２
２は分岐管（プラスチック管）である。The fixed legs 11 and 11a are openable and closable at their lower portions because their upper portions 13 and 13a are held by support flanges 12 formed in the joint main body 1. Trapezoidal nut 10 located in between
The outer ring 10a of the trapezoidal nut 10 is opened in contact with the tapers 15, 15a formed inside the fixed feet 11, 11a in the process of ascending. The taper 15, 1
At the end of 5a, engaging step portions 14 and 14a are formed, and when the corners 10b of the trapezoid nut 10 are engaged with the engaging step portions 14 and 14a, the fixed feet 11 and 11a are lifted by the trapezoid nut 10. Reference numerals 16 and 16a denote engagement portions formed by bending the lower ends of the fixed feet 11 and 11a outward. 2, 19 is a stiffener, 19a is an O-ring, and in FIGS. 1 and 2, 20 is an existing pipe, 21 is a branch port, 2
2 is a branch pipe (plastic pipe).
【００１９】上記継手の固定方法を次に説明する。 ノーブローバッグ等を使用し、大気を遮断した状態で
既設配管２０の上面を穿孔して分岐口２１を設ける。 ボルト６を緩め、固定足１１、１１ａをフリーの状態
にした上で、継手本体１を既設配管２０の分岐口２１部
のところに押し当てる。この際、固定足１１、１１ａが
二股の場合には、固定足１１、１１ａを管軸方向に向け
る（図１、図２参照）。Next, a method for fixing the above joint will be described. Using a no-blow bag or the like, a branch port 21 is provided by piercing the upper surface of the existing pipe 20 in a state where the atmosphere is shut off. After loosening the bolt 6 and leaving the fixed feet 11 and 11a free, the joint body 1 is pressed against the branch port 21 of the existing pipe 20. At this time, when the fixed feet 11, 11a are forked, the fixed feet 11, 11a are directed in the tube axis direction (see FIGS. 1 and 2).
【００２０】ボルト６を締め込み方向に回転させて台
形ナット１０を上昇させ、台形ナット１０の外輪１０ａ
とテーパー１５、１５ａの作用で固定足１１、１１ａを
開脚し、係合部１６、１６ａを既設配管２０に設けた分
岐口２１の内径以上に広げる。 更にボルト６を締め込むと、台形ナット１０の角１０
ｂが固定足１１、１１ａの係合段部１４、１４ａに係合
し、固定足１１、１１ａは吊り上げられる（図５参
照）。The trapezoid nut 10 is raised by rotating the bolt 6 in the tightening direction, and the outer ring 10a of the trapezoid nut 10 is rotated.
The fixed legs 11, 11a are opened by the action of the taper 15, 15a and the engaging portions 16, 16a are expanded to the inner diameter of the branch port 21 provided in the existing pipe 20. When the bolt 6 is further tightened, the corner 10
b engages with the engaging steps 14, 14a of the fixed feet 11, 11a, and the fixed feet 11, 11a are lifted (see FIG. 5).
【００２１】継手本体１のＯリング５と固定足１１、
１１ａの係合部１６、１６ａとで、既設配管２０の内面
と外面を挟み込み、継手本体１は固定される（図６参
照）。 ボルト６側のＯリング８と継手本体１のＯリング５と
で、気密性が維持される。The O-ring 5 and the fixed feet 11 of the joint body 1
The joint body 1 is fixed by sandwiching the inner surface and the outer surface of the existing pipe 20 between the engaging portions 16 and 16a of 11a (see FIG. 6). The O-ring 8 of the bolt 6 and the O-ring 5 of the joint body 1 maintain airtightness.
【００２２】[0022]
【実施例２】本実施例は、図７に示すように、固定足１
１、１１ａと台形ナット１０との係合（摺り合い）を安
定させ、且つ固定足１１、１１ａがバランスよく１８０
°方向（管軸方向）に配置されるように、台形ナット１
０の２ヶ所（１８０°）に溝１７を形成し、ここに固定
足１１、１１ａを夫々係合させたものである。又、この
ように溝１７を形成すると、ボルト６を回転させたとき
に、台形ナット１０が供廻りするのを防止できる。Embodiment 2 In this embodiment, as shown in FIG.
1, 11a and the trapezoidal nut 10 stabilize the engagement (sliding), and the fixed feet 11, 11a are well balanced.
° so that the trapezoid nut 1
The groove 17 is formed at two positions (180 °) of the groove 0, and the fixed feet 11 and 11a are engaged with the groove 17 respectively. Further, when the groove 17 is formed in this way, it is possible to prevent the trapezoid nut 10 from rotating around when the bolt 6 is rotated.
【００２３】[0023]
【実施例３】本実施例は、固定足１１、１１ａを４本、
すなわち四股構成とした実施例であって、図８に示すよ
うに、等間隔（９０°）に固定足１１、１１ａ、１１
ｂ、１１ｃを配置するものである。このように固定足１
１、１１ａ、１１ｂ、１１ｃを四股にすると、特に大口
径の管の場合、安定度を増すことになる。Embodiment 3 In this embodiment, four fixed feet 11 and 11a are used.
That is, in this embodiment, the fixed legs 11, 11a, 11 are arranged at regular intervals (90 °) as shown in FIG.
b, 11c. Thus fixed foot 1
If the 1, 1, 11a, 11b, and 11c are forked, the stability will be increased, particularly in the case of a large-diameter pipe.
【００２４】[0024]
【実施例４】本実施例は、図９に示すように、固定足１
１（１１ａ）の係合部１６（１６ａ）の上面に滑り止め
手段１８を形成した実施例である。Embodiment 4 In this embodiment, as shown in FIG.
This is an embodiment in which a non-slip means 18 is formed on the upper surface of the engaging portion 16 (16a) of 1 (11a).
【００２５】[0025]
【発明の効果】本発明に係る継手は以上の如き構成と作
用により、次の効果を奏することができる。 １．配管に穿孔する分岐孔は１ヶの真円でよく、したが
って分岐孔を穿孔するのに手間がかからない。 ２．クランプを用いないで簡単に継手を配管に取り付け
ることができるので、継手取り付けに要する手数と時間
がクランプ利用時に比較して半減する。The joint according to the present invention has the following effects by the above configuration and operation. 1. The branch hole to be drilled in the pipe may be a single perfect circle, so that it does not take much time to drill the branch hole. 2. Since the joint can be easily attached to the piping without using a clamp, the number and time required for attaching the joint are reduced by half as compared with the case where the clamp is used.
【００２６】３．特に大口径の管の場合、従来であると
大型のクランプを用いていたことから工事が大変であ
り、又、作業溝も大きく掘削する必要があったが、本発
明は、配管の上方からの作業のみで継手の取り付けを行
うことができるので、工事が大変やりやすい。3. Especially in the case of large-diameter pipes, construction was difficult because conventional large clamps were used, and it was necessary to excavate large work grooves. The work can be done very easily because the fittings can be installed only by work.
【図１】本発明に係る継手を断面して正面側から見た状
態の説明図。FIG. 1 is an explanatory view of a state in which a joint according to the present invention is sectioned and viewed from the front side.
【図２】本発明に係る継手を断面して側面側から見た状
態の説明図。FIG. 2 is an explanatory view of a state in which a joint according to the present invention is cross-sectionally viewed from a side.
【図３】Ａ−Ａ′線断面図。FIG. 3 is a sectional view taken along line AA ′.
【図４】Ｂ−Ｂ′線断面図。FIG. 4 is a sectional view taken along line BB ′.
【図５】ボルトを締めて固定足を開脚している状態の説
明図。FIG. 5 is an explanatory view of a state in which a fixed leg is opened by tightening a bolt.
【図６】継手を配管に固定した状態の説明図。FIG. 6 is an explanatory view of a state in which a joint is fixed to a pipe.
【図７】台形ナットに固定足を収める溝を形成した実施
例の説明図。FIG. 7 is an explanatory view of an embodiment in which a groove for accommodating a fixing foot is formed in a trapezoidal nut.
【図８】固定足を四股状に形成した実施例の説明図。FIG. 8 is an explanatory view of an embodiment in which fixed legs are formed in a forked shape.
【図９】固定足の固定部の上面に滑り止め手段を形成し
た実施例の説明図。FIG. 9 is an explanatory view of an embodiment in which a non-slip means is formed on an upper surface of a fixing portion of a fixed foot.
１ 継手本体 ２ 接続口 ３ 分岐管接続口 ４ 流路 ５ Ｏリング ６ ボルト ７ 頭部 ８ Ｏリング ９ ねじ部 １０ 台形ナット １０ａ 外輪 １０ｂ 角 １１、１１ａ、１１ｂ、１１ｃ 固定足 １２ 支持鍔 １３、１３ａ 上部 １４、１４ａ 係合段部 １５、１５ａ テーパー １６、１６ａ 係合部 １７ 溝 １８ 滑り止め手段 １９ スティフナー １９ａ Ｏリング ２０ 既設配管 ２１ 分岐口 ２２ 分岐管 DESCRIPTION OF SYMBOLS 1 Joint main body 2 Connection port 3 Branch pipe connection port 4 Flow path 5 O-ring 6 Bolt 7 Head 8 O-ring 9 Screw part 10 Trapezoidal nut 10a Outer ring 10b Square 11, 11a, 11b, 11c Fixed foot 12 Support flange 13, 13a Upper part 14, 14a Engagement step part 15, 15a Taper 16, 16a Engagement part 17 Groove 18 Non-slip means 19 Stiffener 19a O-ring 20 Existing piping 21 Branch port 22 Branch pipe
Claims (10)
し、側方に前記接続口に続く分岐管接続口を形成して成
る継手本体と、 前記継手本体内に垂直にボルトを遊転自在に挿入すると
共に、このボルトのネジ部に開脚用ナットをねじ込んで
成る締結手段と、 前記継手本体内において、前記締結手段の開脚用ナット
を中央に配置し、この開脚用ナットが上昇することによ
り下端側が開脚して配管に穿孔した分岐口の内縁に係合
部が係合するように構成した固定足と、 から成る配管用分岐継手。1. A joint body having a bottom formed with a connection port for an existing pipe and a side formed with a branch pipe connection port following the connection port, and a bolt vertically rotatable in the joint body. A fastening means that is inserted and a nut for screwing a leg is screwed into a screw portion of the bolt, and a nut for opening the leg of the fastening means is disposed at a center in the joint body, and the nut for spreading the leg is raised. And a fixed foot configured such that the engaging portion is engaged with an inner edge of a branch port formed by drilling a pipe by opening a lower end side of the pipe.
成されている接続口は真円に形成してあり、この接続口
の周囲には配管と密着するようにＯリングが装着されて
いることを特徴とする配管用分岐継手。2. The connection port according to claim 1, wherein the connection port formed at the bottom of the joint body is formed in a perfect circle, and an O-ring is mounted around the connection port so as to be in close contact with the pipe. A branch joint for piping characterized by the above-mentioned.
形が台形を呈していることを特徴とする配管用分岐継
手。3. The branch joint for piping according to claim 1, wherein the outer shape of the leg-spreading nut has a trapezoidal shape.
していることを特徴とする配管用分岐継手。4. The branch joint for piping according to claim 1, wherein the fixed foot has a forked shape.
していることを特徴とする配管用分岐継手。5. The branch joint for piping according to claim 1, wherein the fixed foot has a forked shape.
側にはテーパー部とこれに続く係合段部が形成されてい
て、ボルトを回転させて開脚用ナットを上昇させ、固定
足を開脚させたのち、開脚用ナットの上縁が係合段部に
係合し、更に開脚用ナットが上昇すると固定足を上方に
吊り上げて固定足の係合部を分岐口の内縁に係合させる
ことができ、更にボルトを締め込んで開脚用ナットを上
昇させることにより、継手本体を配管に設けた分岐口に
固定できることを特徴とする配管用分岐継手。6. The fixed foot according to claim 1, wherein a tapered portion and an engaging step portion following the tapered portion are formed on the inside of the fixed foot, and the bolt is rotated to raise the leg opening nut, thereby fixing the leg. After the leg is opened, the upper edge of the leg opening nut engages with the engaging step, and when the leg opening nut further rises, the fixed foot is lifted upward and the engaging portion of the fixed leg is connected to the branch port. A branch joint for piping, characterized in that the joint body can be fixed to a branch port provided in piping by being able to engage with an inner edge, and further tightening a bolt to raise a nut for leg opening.
足は、その上部が継手本体の内側に形成された固定足支
持部により遊動自在に支持されていると共に、自重で閉
脚する方向にバランスが調整されていることを特徴とす
る配管用分岐継手。7. The fixed foot according to claim 1, 4 or 5 or 6, wherein an upper portion thereof is freely movably supported by a fixed foot support portion formed inside the joint body, and the leg is closed by its own weight. A branch joint for piping, characterized in that the balance is adjusted.
周には、固定足を等間隔で配置し、併せてナットの供廻
りを防止するための固定脚係合溝が形成されていること
を特徴とする配管用分岐継手。8. A fixed leg engaging groove for preventing the nut from turning around is provided on the outer periphery of the nut for leg opening according to claim 1 or 2 at a fixed interval. A branch joint for piping.
をトランジション継手構造に形成して成る配管用分岐継
手。9. A branch joint for piping, wherein the branch pipe connection port of the joint body according to claim 1 is formed in a transition joint structure.
足の固定部の上面に滑り止め手段を形成して成る配管用
分岐継手。10. The branch joint for piping according to claim 1, 3 or 4, wherein a non-slip means is formed on an upper surface of a fixed portion of the fixed foot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31157796A JPH10153291A (en) | 1996-11-22 | 1996-11-22 | Branch coupling for pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31157796A JPH10153291A (en) | 1996-11-22 | 1996-11-22 | Branch coupling for pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10153291A true JPH10153291A (en) | 1998-06-09 |
Family
ID=18018916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31157796A Pending JPH10153291A (en) | 1996-11-22 | 1996-11-22 | Branch coupling for pipeline |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10153291A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008169980A (en) * | 2007-01-15 | 2008-07-24 | Tabuchi Corp | Water cut-off device of saddle diversion cock, water cut-off method and of saddle diversion cock replacing method |
| JP2008223804A (en) * | 2007-03-09 | 2008-09-25 | Tokyo Metropolis | Repair structure and repair method for snap tap |
| JP2009210023A (en) * | 2008-03-04 | 2009-09-17 | Sekisui Chem Co Ltd | Branch joint |
-
1996
- 1996-11-22 JP JP31157796A patent/JPH10153291A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008169980A (en) * | 2007-01-15 | 2008-07-24 | Tabuchi Corp | Water cut-off device of saddle diversion cock, water cut-off method and of saddle diversion cock replacing method |
| JP2008223804A (en) * | 2007-03-09 | 2008-09-25 | Tokyo Metropolis | Repair structure and repair method for snap tap |
| JP2009210023A (en) * | 2008-03-04 | 2009-09-17 | Sekisui Chem Co Ltd | Branch joint |
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