JPH09296890A - Pipe joint - Google Patents
Pipe jointInfo
- Publication number
- JPH09296890A JPH09296890A JP8132737A JP13273796A JPH09296890A JP H09296890 A JPH09296890 A JP H09296890A JP 8132737 A JP8132737 A JP 8132737A JP 13273796 A JP13273796 A JP 13273796A JP H09296890 A JPH09296890 A JP H09296890A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- pipes
- joined
- slip
- inner sleeve
- 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.)
- Withdrawn
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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
- F16L27/127—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement with means for locking the longitudinal adjustment or movement in the final mounted position
- F16L27/1274—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement with means for locking the longitudinal adjustment or movement in the final mounted position by means of a swivel nut
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
- Joints Allowing Movement (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は配管を簡単に継管
施工することができ、且つ、風や地震などによる敷設さ
れた管の接続部の軸方向の変位を許容し、発生する応力
を緩和する管継手に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes it possible to easily connect pipes and to allow axial displacement of the connecting portions of the pipes laid due to wind or earthquake to alleviate the generated stress. Pipe fittings.
【０００２】[0002]
【従来の技術】従来、配管の接合には、溶接やねじ込み
継手或いはフランジ継手等が用いられてきた。しかし、
これらの方法では施工に時間と労力を要することから、
簡単に施工のできる管継手が開発されるようになった。2. Description of the Related Art Conventionally, welding, threaded joints, flange joints, etc. have been used for joining pipes. But,
Since these methods require time and labor for construction,
Pipe fittings that can be easily installed have been developed.
【０００３】例えば、特開平７−９１５７６号公報に
は、硬質プラスチック管用の管継手として次のような管
継手が開示されている。管継手の本体をなす外筒は二分
割されており、その中にシーリング用の内筒と抜け防止
用のウエッジリングを有する。これらの部材を予め組み
立てておき、管継手の両端から接合すべき管を差し込み
挿入する。管に引抜き力が作用し管が抜けようとする
と、ウエッジが管の外面に食い込み抜けを防止する。For example, Japanese Patent Laid-Open No. 7-91576 discloses the following pipe joint as a pipe joint for a hard plastic pipe. The outer cylinder forming the main body of the pipe joint is divided into two parts, and has an inner cylinder for sealing and a wedge ring for preventing it from falling out. These members are assembled in advance and the pipes to be joined are inserted from both ends of the pipe joint. When a pulling force acts on the pipe to pull it out, the wedge cuts into the outer surface of the pipe and prevents the pipe from coming off.
【０００４】又、特開平６−１４７３７３号公報には、
管端に雄ねじを有する管を接合する次の機構が開示され
ている。内面に管端の雄ねじに噛み合う雌ねじを刻んだ
分割可能な内筒を被せる。この内筒の外表面はテーパー
面となっており、内筒の上に内表面が同じくテーパー面
である外筒を被せることによって内筒を固定する機構で
ある。Further, Japanese Patent Laid-Open No. 6-147373 discloses that
The following mechanism for joining a tube with male threads at the tube end is disclosed. The inner surface is covered with a separable inner cylinder engraved with a female screw that meshes with the male screw at the pipe end. The outer surface of the inner cylinder is a tapered surface, and the inner cylinder is fixed by covering the inner cylinder with an outer cylinder whose inner surface is also a tapered surface.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、従来の
敷設管では地震や風により、管に大きな引っ張り力がか
かることがある。この場合、接合部にも応力が発生す
る。上記の管継手や接合機構では接合される管同士の位
置が固定され相対的な変位が許されないので、応力を緩
和する余地がない。このため、ウエッジが滑ったりねじ
山が変形するなど管継手の損傷を招き、接合部の気密性
が損なわれたり或いは管が抜けたりすることがあった。However, in the conventional laid pipe, a large tensile force may be applied to the pipe due to an earthquake or wind. In this case, stress also occurs at the joint. In the above-mentioned pipe joint and joining mechanism, the positions of the pipes to be joined are fixed and relative displacement is not allowed, so there is no room for relaxing the stress. As a result, the pipe joint may be damaged, for example, the wedge may slip or the thread may be deformed, and the airtightness of the joint may be impaired or the pipe may come off.
【０００６】この発明はこの問題を解決するために行わ
れたもので、接合されている管に所定の変移を許すこと
によって、管継手の破損や損傷を防ぐものである。即
ち、接合されている管は所定の範囲にわたって変位する
ことができ、所定の範囲を超えようとすると抜け防止凸
部と抜け防止凸部溝が当接し接合された管が離脱でき
ず、且つ変位しても接合部の気密性が維持され、更に施
工が簡単である管継手の提供を目的とする。The present invention has been made to solve this problem, and it is intended to prevent breakage or damage of the pipe joint by allowing the pipes to be joined to undergo a predetermined displacement. That is, the joined pipes can be displaced over a predetermined range, and when the predetermined range is exceeded, the slip-out preventing projections and the slip-out preventing projection groove come into contact with each other, and the joined pipes cannot be separated, Even if the airtightness of the joint is maintained, the pipe joint can be easily constructed.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成する手段
は、以下に記載する手段である。第１の発明は、次の部
材を備えた管継手である。（ａ）抜け防止凸部を一体成
型または固着により管端部の外周面に設け、気密性を確
保するための弾性体リングを管端部の外周に密接させて
ある接合される管と、（ｂ）前記接合される管を突き合
わせた状態で前記抜け防止凸部が嵌合される抜け防止凸
部溝及び前記弾性体リングが嵌合される弾性体リング溝
を内面に備え、前記抜け防止凸部溝のうち少なくとも一
本は前記抜け防止凸部の幅よりも大きな幅を持った内ス
リーブ管で、その外面がテーパー面をなし、その一部又
は全部が雄ねじとなっており、そして管軸に沿って少く
とも２以上に分割可能な、前記接合される管を押圧する
ための内スリーブ管と、（ｃ）前記内スリーブ管の外面
に密接する内面を有し、この一部又は全部が前記雄ねじ
に螺合できる雌ねじとなっている外スリーブ管。Means for achieving the above object is the means described below. 1st invention is a pipe joint provided with the following members. (A) A joined pipe in which a slip-out preventing convex portion is integrally formed or adhered to the outer peripheral surface of the pipe end, and an elastic ring for ensuring airtightness is brought into close contact with the outer periphery of the pipe end, b) An inner surface is provided with a slip-out preventing convex groove into which the slip-out preventing projection is fitted and an elastic ring groove into which the elastic ring is fitted in a state where the pipes to be joined are abutted, and the slip-out preventing projection is provided. At least one of the groove portions is an inner sleeve tube having a width larger than the width of the slip-off preventing convex portion, the outer surface of which is a tapered surface, and part or all of which is a male screw, and the tube shaft Has an inner sleeve tube for pressing the joined tubes, which is divisible by at least two or more, and (c) has an inner surface in close contact with the outer surface of the inner sleeve tube, part or all of which is An outer sleeve that is a female screw that can be screwed into the male screw .
【０００８】接合される管に一体成形又は固着された抜
け防止凸部は、内スリーブ管内面の抜け防止凸部溝に嵌
合し、接合される管が抜けることを防止する。そして、
接合される管外周に密接する弾性体リングは、管継手の
内スリーブ管内面の弾性体リング溝に嵌合し、接合され
る管外面と管継手内スリーブ管内面との間の隙間を塞ぎ
接合部の気密性を維持する。したがって、一般には抜け
防止凸部と弾性体リングが各一本づつ一対あればよい
が、溝を充分に深くすることが困難な場合など、複数対
にして補ってもよい。The slip-out preventing convex portion integrally formed or fixed to the pipe to be joined fits into the slip-out preventing convex portion groove on the inner surface of the inner sleeve pipe to prevent the pipe to be joined from coming off. And
The elastic body ring that is in close contact with the outer circumference of the pipe to be joined fits into the elastic body ring groove on the inner surface of the inner sleeve pipe of the pipe joint, and closes the gap between the outer surface of the pipe to be joined and the inner surface of the pipe sleeve inside the pipe joint to form a joint. Maintains the airtightness of the section. Therefore, in general, a pair of the pull-out preventing convex portion and the elastic body ring is required, but a plurality of pairs may be supplemented when it is difficult to sufficiently deepen the groove.
【０００９】管継手の内スリーブ管を分割可能とするこ
とによって、接合される管の管端部同士を付き合わせて
から、内スリーブ管を被せることができるので施工が容
易である。この内スリーブ管の内面は接合される管の外
面に沿わせるために円筒状であるが、内スリーブ管が外
スリーブ管に押し込められたとき押圧され締めつけられ
るように、その外面は管軸方向に勾配を持ったテーパー
面とする。By making the inner sleeve pipe of the pipe joint separable, the inner sleeve pipe can be covered after the pipe ends of the pipes to be joined are brought into contact with each other, so that the construction is easy. The inner surface of this inner sleeve tube is cylindrical to fit the outer surface of the pipe to be joined, but its outer surface is axially oriented so that when the inner sleeve tube is pushed into the outer sleeve tube, it is pressed and tightened. Make a tapered surface with a gradient.
【００１０】又、内面に設けられる抜け防止凸部溝と弾
性体リング溝は、二本の接合される管の各々の抜け防止
凸部と弾性体リングとに嵌合するように、内スリーブ管
の両端側に少なくとも一対づつ設ける。一般には一対づ
つあればよい。Further, the slip-out preventing convex groove and the elastic ring groove provided on the inner surface are fitted in the inner sleeve pipe so that the slip-out preventing convex portion and the elastic ring of each of the two pipes to be joined are fitted. At least one pair is provided on both ends of the. Generally, one pair is enough.
【００１１】抜け止防止凸部は、リング状でも、飛び飛
びの凸部でもよく、その凸部用の溝の少なくとも一方の
溝幅を抜け防止凸部の幅より大きくするのは、接合され
る管の管軸方向の変位を許容するためである。即ち、接
合される管は、上記の溝幅から凸部の幅を差し引いた量
だけ変位することが許される。The slip-out preventing convex portion may be a ring shape or an irregular convex portion, and the groove width of at least one of the grooves for the convex portion is made larger than the width of the slip-out preventing convex portion because the pipes to be joined are joined together. This is to allow the displacement in the direction of the tube axis. That is, the pipe to be joined is allowed to be displaced by the amount obtained by subtracting the width of the convex portion from the groove width.
【００１２】弾性体リング溝の深さは弾性体リングの高
さか又はやや小さめの深さとし、弾性体リングが接合さ
れる管外面とともに内スリーブ管内面とも充分に密接す
るようにする。接合される管が変位し両管端に隙間が生
じても、弾性体リングが接合される管外面及び管継手内
面に密接しているので、接合される管内の気密性は維持
される。The depth of the elastic ring groove is set to the height of the elastic ring or a slightly smaller depth so that the elastic ring groove is sufficiently close to both the outer surface of the tube to which the elastic ring is joined and the inner surface of the inner sleeve tube. Even if the pipes to be joined are displaced and gaps are formed at both pipe ends, the elastic ring is in close contact with the outer surface of the pipe to be joined and the inner face of the pipe joint, so that the airtightness inside the joined pipes is maintained.
【００１３】内スリーブ管外面の一部又は全部に設けら
れた雄ねじは外スリーブ管内面の一部又は全部に設けら
れた雌ねじと螺合し、外スリーブ管の回転に伴って外ス
リーブ管内に内スリーブ管を押し込むと同時に、内スリ
ーブ管が軸芯に向かって圧接される。接合される管は鋼
管、その他の金属管（銅管、鉛管等）、プラスチック管
等がある。そこで、内スリーブ管、外スリーブ管の材質
も鋼製、その他の金属製、プラスチック管等があり、使
用目的に応じて適当な組み合わせを選択すればよい。A male thread provided on a part or all of the outer surface of the inner sleeve tube is screwed with a female thread provided on a part or all of the inner surface of the outer sleeve tube, so that the inner thread is inserted into the outer sleeve tube as the outer sleeve tube rotates. At the same time as the sleeve tube is pushed in, the inner sleeve tube is pressed against the shaft core. The pipes to be joined include steel pipes, other metal pipes (copper pipes, lead pipes, etc.), and plastic pipes. Therefore, the inner sleeve pipe and the outer sleeve pipe may be made of steel, other metal, plastic pipe, or the like, and an appropriate combination may be selected according to the purpose of use.
【００１４】第２の発明は、上記第１の発明において、
前記内スリーブ管が、その外面の大径側がテーパー面で
小径側の端部がテーパーのない円筒面でこの円筒部が雄
ねじであるか、又は小径側がテーパー面で大径側の端部
がテーパーのない円筒面でこの円筒部が雄ねじである管
継手である。According to a second aspect, in the first aspect,
The outer diameter of the inner sleeve tube is a tapered surface on the outer diameter side and the end portion on the small diameter side is a non-tapered cylindrical surface, and the cylindrical portion is a male screw, or the small diameter side is a tapered surface and the end on the large diameter side is tapered. This is a pipe joint in which there is a non-cylindrical surface and this cylindrical portion is a male screw.
【００１５】内スリーブ管はその外面にねじが刻まれた
雄ねじであり、外スリーブ管はこれに螺合する雌ねじで
あるが、このねじ部のみを外面がテーパーを持たない円
筒面とする。そして、このねじ部の位置を大径側か小径
側の端部とする。又、ねじ部はテーパのない円筒状であ
る方が製作が容易で精度の高いねじが加工し易い。The inner sleeve tube is a male thread having a thread engraved on the outer surface thereof, and the outer sleeve tube is a female thread which is screwed into the outer sleeve tube. However, only the threaded portion is a cylindrical surface having no taper on the outer surface. Then, the position of this threaded portion is the end portion on the large diameter side or the small diameter side. Further, if the threaded portion has a cylindrical shape without a taper, it is easier to manufacture and a highly accurate screw can be easily processed.
【００１６】[0016]
【発明の実施の形態】第１の発明の実施の形態を図１及
び図２に示す。図は、接合された状態の管継手の縦断面
を示す。１ａ，１ｂは接合される管、２は内スリーブ
管、３は外スリーブ管である。接合される管１及び１ｂ
の管端部に各々抜け防止凸部４ａ，４ｂが固設され、各
々弾性体リング５ａ，５ｂが密接している。抜け防止凸
部４ａ，４ｂの断面形状は図では円形であるが、必ずし
も円形ではなく楕円或いは角形であってもよい。又、抜
け防止凸部４ａ，４ｂの固着については、溶接、接着等
により固着してもよい。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the first invention is shown in FIGS. The figure shows a longitudinal section of the pipe joint in the joined state. 1a and 1b are pipes to be joined, 2 is an inner sleeve pipe, and 3 is an outer sleeve pipe. Pipes 1 and 1b to be joined
The pull-out preventing projections 4a and 4b are fixedly provided at the respective pipe ends, and the elastic body rings 5a and 5b are in close contact with each other. Although the cross-sectional shape of the slip-out preventing convex portions 4a and 4b is circular in the drawing, it may not be necessarily circular but may be elliptical or rectangular. Further, as for the fixation of the slip-out preventing convex portions 4a, 4b, they may be fixed by welding, adhesion or the like.
【００１７】内スリーブ管は、図２に示すように、管軸
に沿って分割できる構造で、その外面にねじが刻まれて
いる。この内スリーブ管２に外スリーブ管３を外挿して
ねじ込むことにより内スリーブ管２は締めつけられる。As shown in FIG. 2, the inner sleeve tube has a structure in which it can be divided along the tube axis, and a screw is carved on the outer surface thereof. The inner sleeve tube 2 is tightened by externally inserting and screwing the outer sleeve tube 3 into the inner sleeve tube 2.
【００１８】分割した内スリーブの相互の合わせ面にゴ
ム、布、又は樹脂等のパッキンを介在物させると止水性
が向上する。そして、内スリーブ管の外面及び外スリー
ブ管の内面が互いに密接するテーパー面であるから、螺
合を進めるに従い分割面は互いに押圧され、更に止水性
が向上する。If a packing made of rubber, cloth, resin, or the like is provided as an interposition between the mating surfaces of the divided inner sleeves, the water stopping property is improved. Further, since the outer surface of the inner sleeve tube and the inner surface of the outer sleeve tube are tapered surfaces that are in close contact with each other, the divided surfaces are pressed against each other as the screwing proceeds, and the water stopping property is further improved.
【００１９】再び図１戻って、内スリーブ管２の内面に
は抜け防止凸部４ａ，４ｂ及び弾性体リング５ａ，５ｂ
が各々嵌合する抜け防止凸部溝６ａ，６ｂ及び弾性体リ
ング溝７ａ，７ｂが設けられている。この場合、抜け防
止凸部溝６ａの幅は抜け防止凸部４ａの幅と同じにした
が、抜け防止凸部溝６ｂの幅を抜け防止凸部４ａの幅よ
り大きくした。これらの幅の差は、例えば数ｍｍ〜数１
００ｍｍ程度が適当である。Referring back to FIG. 1 again, the inner sleeve tube 2 has an inner surface on which projections 4a and 4b for preventing slippage and elastic rings 5a and 5b are formed.
The pull-out preventing convex grooves 6a and 6b and the elastic body ring grooves 7a and 7b which are fitted with each other are provided. In this case, the width of the drop-out preventing convex groove 6a was made the same as the width of the drop-out preventing convex section 4a, but the width of the drop-out preventing convex section groove 6b was made larger than the width of the drop-preventing convex section 4a. The difference between these widths is, for example, several mm to several 1.
A length of about 00 mm is suitable.
【００２０】外スリーブ管２の外面と外スリーブ管３の
内面の互いに螺合するねじ８は、一方の端の近くに刻ん
だが、その位置は中央よりであってもよく、どこであっ
てもよい。Screws 8 for screwing into each other on the outer surface of the outer sleeve tube 2 and the inner surface of the outer sleeve tube 3 are cut near one end, but the position may be from the center or anywhere. .
【００２１】施工に際しては、接合される管１ｂを外ス
リーブ管３に挿入した状態で、両接合される管１ａ，１
ｂを接合される位置に設置する。設置後内スリーブ管２
を接合される管１ａ，１ｂにリングと溝とを嵌合して被
せ、その後外スリーブ管３を外挿しねじ込んで内スリー
ブ管を充分に締めつけ、接合される管１ａ，１ｂに圧接
される。At the time of construction, with the pipe 1b to be joined inserted in the outer sleeve pipe 3, both pipes 1a, 1 to be joined
Set b at the position to be joined. Inner sleeve tube 2 after installation
The pipes 1a and 1b to be joined are fitted with a ring and a groove, and then the outer sleeve pipe 3 is externally inserted and screwed to sufficiently tighten the inner sleeve pipe, and the pipes 1a and 1b to be joined are pressure-welded.
【００２２】第２の発明の実施例の形態を図３及び図４
に示す。ねじ８が刻まれた面は、内スリーブ管２の外
面、外スリーブ管３の内面ともテーパーを有しない円周
面である。図３ではねじ面が大径側にあり、図４ではね
じ面は小径側にある。An embodiment of the second invention is shown in FIGS.
Shown in The surface on which the screw 8 is engraved is a circumferential surface that does not have a taper on both the outer surface of the inner sleeve tube 2 and the inner surface of the outer sleeve tube 3. In FIG. 3, the screw surface is on the large diameter side, and in FIG. 4, the screw surface is on the small diameter side.
【００２３】なお、抜け防止凸部４ａ，４ｂを螺合緊締
する場合を除くと、抜け防止凸部とと弾性体リングとの
管端に対する位置関係は、これまでの図に示した関係に
限定されず反対であってもよい。図５は、弾性体リング
５ａ，５ｂを管端側に位置せしめたもので、これにとも
ない弾性体リング溝７ａ，７ｂを抜け防止凸部溝６ａ，
６ｂよりも内スリーブ管２中央部側に設けたものであ
る。Except for the case where the slip-out preventing projections 4a and 4b are screwed together, the positional relationship between the slip-out preventing projections and the elastic ring with respect to the tube end is limited to the relationship shown in the above figures. The opposite may be the case. In FIG. 5, the elastic rings 5a and 5b are positioned on the tube end side. With this, the elastic ring grooves 7a and 7b are removed from the protrusion preventing groove 6a.
It is provided closer to the center of the inner sleeve tube 2 than 6b.
【００２４】又、抜け防止凸部溝６ａ，６ｂの幅を共に
抜け防止凸部４ａ，４ｂの幅よりも大きくしてもよく、
図５には、その例が示されている。この例では、接合さ
れる管が変位した場合接合される管内を流れる流体が、
抜け防止凸部にまで達しなくて済む。しかし、変位量を
考慮して弾性体リングの位置を決めなけれはならない。
抜け防止凸部溝の幅で許される変位量の範囲までは、接
合される管の管端から弾性体リングが外れないようにし
なければならない。Further, both the widths of the slip-out preventing projection grooves 6a and 6b may be made larger than the widths of the slip-out preventing projections 4a and 4b.
An example thereof is shown in FIG. In this example, when the joined pipes are displaced, the fluid flowing in the joined pipes is
It is not necessary to reach the slip-out prevention convex part. However, the position of the elastic ring must be determined in consideration of the displacement amount.
It is necessary to prevent the elastic body ring from coming off from the pipe ends of the pipes to be joined within the range of the displacement amount allowed by the width of the slip-out preventing convex groove.
【００２５】以上説明してきた管継手において、接合さ
れる管は鋼であれ、鉛やアルミニュウム等の金属管であ
れ、或いは塩化ビニルやポリエチレン等の樹脂管であ
れ、それらの種類を問わない。また、管継手の各部材も
材質も特に限定されず、鋼、鋳鉄、その他の金属或いは
樹脂でもよい。In the pipe joint described above, the pipes to be joined are not limited to steel, metal pipes such as lead and aluminum, and resin pipes such as vinyl chloride and polyethylene. Further, each member and material of the pipe joint are not particularly limited, and may be steel, cast iron, other metal or resin.
【００２６】例えば、鋼製又は鋳鉄製の管継手により鋼
管を接合すれば電磁遮蔽効果があり、電源又は通信ケー
ブルを敷設したとき周囲を妨害したり、周囲から妨害さ
れることがない。For example, if a steel pipe is joined by a steel or cast iron pipe joint, it has an electromagnetic shielding effect, and does not interfere with the surroundings when the power supply or the communication cable is laid, or from the surroundings.
【００２７】更に、内スリーブ管は、接合される管内を
流れる物質により制限を受ける場合がある。例えば、流
体が腐食性物質で一般の金属が用いられない場合等であ
る。このような場合、内スリーブ管と外スリーブ管とで
材質を替えてもよい。Further, the inner sleeve tube may be limited by the material flowing in the tubes to be joined. For example, when the fluid is a corrosive substance and a general metal is not used. In such a case, the material may be changed between the inner sleeve tube and the outer sleeve tube.
【００２８】近年、プラスチック管が普及しているが、
接合される管がプラスチックの場合、内スリーブ管は流
送物が接触することを前提としているので、内スリーブ
管もプラスチックであることが望ましい。しかし、外ス
リーブ管には内スリーブ管を充分な力で押圧するだけの
強度と配管に働く曲げ応力に耐える強度が必要なため、
鋼製とすることが好ましい。In recent years, plastic pipes have become popular,
If the pipes to be joined are plastic, it is desirable that the inner sleeve pipes are also plastic, as the inner sleeve pipes are supposed to come into contact with the consignment. However, the outer sleeve tube must have sufficient strength to press the inner sleeve tube with sufficient force and withstand the bending stress that acts on the pipe.
It is preferably made of steel.
【００２９】特に、地震や風等により、管継手に曲げ応
力が作用する場合には、管継手の外スリーブにプラスチ
ックよりも強度がある鋼製のスリーブを使用することが
望ましい。また、外スリーブ管を鋼製とプラスチック製
の二重管とし、地震等に耐える強度を確保するとともに
軽量化したので、更に安価に製造することができた。Particularly, when bending stress acts on the pipe joint due to an earthquake or wind, it is desirable to use a steel sleeve having a strength higher than that of plastic as the outer sleeve of the pipe joint. Further, since the outer sleeve tube is made of a steel and a plastic double tube to ensure the strength to withstand an earthquake and the like and to reduce the weight, it was possible to manufacture at a lower cost.
【００３０】別の実施例では、内スリーブ管を塩化ビニ
ル樹脂で作製し、外スリーブ管を塩化ビニル製のスリー
ブの外側に鋼管を被せた二重管とした。そして、弾性体
リングには、弾性率が大きく化学的にも安定なポリウレ
タンゴムを使用した。In another embodiment, the inner sleeve pipe is made of vinyl chloride resin, and the outer sleeve pipe is a double pipe in which a vinyl chloride sleeve is covered with a steel pipe. For the elastic ring, polyurethane rubber having a large elastic modulus and being chemically stable was used.
【００３１】[0031]
【発明の効果】以上述べてきたように、この発明によれ
ば接合される管に抜け防止凸部を固設し弾性体リングを
密接させ、管継手を分割可能な内スリーブ管と内スリー
ブ管を締めつける外スリーブ管とで構成し、内スリーブ
管内面の抜け防止凸部溝には接合される管の変位を許す
だけの幅をもたせてある。このため、配管施工が簡単で
あり、加えて、施工後地震などにより接合される管に大
きな力がかかっても、接合される管の変位が許されるの
で管継手の破損損傷が免れる。このように、安全度の高
い管の敷設を可能としたこの発明の効果は大きい。As described above, according to the present invention, the inner sleeve pipe and the inner sleeve pipe in which the pipe joint can be divided by fixing the slip-out preventing convex portion to the pipe to be joined and closely contacting the elastic ring. The outer sleeve tube for tightening the inner sleeve tube is provided with a width sufficient to allow displacement of the joined tube in the groove of the inner surface of the inner sleeve tube for preventing slippage. Therefore, the pipe construction is simple, and in addition, even if a large force is applied to the joined pipes due to a post-construction earthquake or the like, displacement of the joined pipes is allowed and damage to the pipe joint is avoided. As described above, the effect of the present invention that enables the laying of a highly safe pipe is great.
【図１】発明の実施の一形態である管継手の縦断面図で
ある。FIG. 1 is a vertical cross-sectional view of a pipe joint which is an embodiment of the invention.
【図２】発明の実施の一形態である管継手の見取り図で
ある。FIG. 2 is a sketch drawing of a pipe joint according to an embodiment of the invention.
【図３】発明の実施の他の形態である管継手の縦断面図
である。FIG. 3 is a vertical sectional view of a pipe joint according to another embodiment of the invention.
【図４】発明の実施の他の形態である管継手の縦断面図
である。FIG. 4 is a vertical sectional view of a pipe joint according to another embodiment of the invention.
【図５】発明の実施の他の形態である管継手の縦断面図
である。FIG. 5 is a longitudinal sectional view of a pipe joint according to another embodiment of the invention.
１a 、1 b 接合される管 ２ 内スリーブ管 ３ 外スリーブ管 ４a 、４b 抜け防止凸部 ５a 、５b 弾性体リング ６a 、６b 抜け防止凸部溝 ７a 、７b 弾性体リング溝 ８ ねじ 1a, 1b Pipes to be joined 2 Inner sleeve pipe 3 Outer sleeve pipe 4a, 4b Detachment prevention projections 5a, 5b Elastic body rings 6a, 6b Detachment prevention projection groove 7a, 7b Elastic body ring groove 8 Screw
───────────────────────────────────────────────────── フロントページの続き (71)出願人 000001258 川崎製鉄株式会社 兵庫県神戸市中央区北本町通１丁目１番28 号 (72)発明者 南部 俊彦 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 堀池 潔 大阪府大阪市中央区北浜４丁目５番33号 住友金属工業株式会社内 (72)発明者 辻井 正人 千葉県富津市新富20−１ 新日本製鐵株式 会社技術開発本部内 (72)発明者 辰見 夕一 東京都千代田区内幸町二丁目２番３号 川 崎製鉄株式会社東京本社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000001258 Kawasaki Steel Co., Ltd. 1-228 Kitahonmachi-dori, Chuo-ku, Kobe-shi, Hyogo Prefecture (72) Inventor Toshihiko Minami 1-2-1 Marunouchi, Chiyoda-ku, Tokyo Nippon Steel Pipe Co., Ltd. (72) Inventor Kiyoshi Horiike 4-53-3 Kitahama, Chuo-ku, Osaka City, Osaka Prefecture Sumitomo Metal Industries, Ltd. (72) Inventor Masato Tsujii 20-1 Shintomi, Futtsu, Chiba Prefecture (72) Inventor Yuichi Tatsumi 2-3-3 Uchisaiwaicho, Chiyoda-ku, Tokyo Kawasaki Steel Co., Ltd.
Claims (2)
継手。（ａ）抜け防止凸部を一体成型または固着により
管端部の外周面に設け、気密性を確保するための弾性体
リングを管端部の外周に密接させてある接合される管
と、（ｂ）前記接合される管を突き合わせた状態で前記
抜け防止凸部が嵌合される抜け防止凸部溝及び前記弾性
体リングが嵌合される弾性体リング溝を内面に備え、前
記抜け防止凸部溝のうち少なくとも一本は前記抜け防止
凸部の幅よりも大きな幅を持った内スリーブ管で、その
外面がテーパー面をなし、その一部又全部が雄ねじとな
っており、そして管軸に沿って少くとも２以上に分割可
能な、前記接合される管を押圧するための内スリーブ管
と、（ｃ）前記内スリーブ管の外面に密接する内面を有
し、この一部又は全部が前記雄ねじに螺合できる雌ねじ
となっている外スリーブ管。1. A pipe joint comprising the following members. (A) A joined pipe in which a slip-out preventing convex portion is integrally formed or adhered to the outer peripheral surface of the pipe end, and an elastic ring for ensuring airtightness is brought into close contact with the outer periphery of the pipe end, b) An inner surface is provided with a slip-out preventing convex groove into which the slip-out preventing projection is fitted and an elastic ring groove into which the elastic ring is fitted in a state where the pipes to be joined are abutted, and the slip-out preventing projection is provided. At least one of the groove portions is an inner sleeve tube having a width larger than the width of the slip-off preventing convex portion, the outer surface of which is a tapered surface, and part or all of which is a male screw, and the tube shaft Has an inner sleeve tube for pressing the joined tubes, which is divisible by at least two or more, and (c) has an inner surface in close contact with the outer surface of the inner sleeve tube, part or all of which is An outer sleeve tube that is a female thread that can be screwed into the male thread
がテーパー面で小径側の端部がテーパーのない円筒面で
この円筒面が雄ねじであるか、又は小径側がテーパー面
で大径側の端部がテーパーのない円筒面でこの円筒面が
雄ねじである請求項１記載の管継手。2. The inner sleeve tube has a tapered surface on the large diameter side of the outer surface and a non-tapered cylindrical surface at the end on the small diameter side, or the cylindrical surface is a male thread, or the small diameter side is a tapered surface on the large diameter side. The pipe joint according to claim 1, wherein an end portion of the cylindrical surface is a non-tapered cylindrical surface, and the cylindrical surface is a male screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8132737A JPH09296890A (en) | 1996-04-30 | 1996-04-30 | Pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8132737A JPH09296890A (en) | 1996-04-30 | 1996-04-30 | Pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09296890A true JPH09296890A (en) | 1997-11-18 |
Family
ID=15088426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8132737A Withdrawn JPH09296890A (en) | 1996-04-30 | 1996-04-30 | Pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09296890A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190108324A (en) * | 2018-03-14 | 2019-09-24 | 주식회사 대정밸브 | Loosening prevention device for high pressure valve |
| CN113028158A (en) * | 2021-04-09 | 2021-06-25 | 大连理工大学 | Distributed assembly end connector is strengthened to ladder of LNG multilayer flexible pipeline |
-
1996
- 1996-04-30 JP JP8132737A patent/JPH09296890A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190108324A (en) * | 2018-03-14 | 2019-09-24 | 주식회사 대정밸브 | Loosening prevention device for high pressure valve |
| CN113028158A (en) * | 2021-04-09 | 2021-06-25 | 大连理工大学 | Distributed assembly end connector is strengthened to ladder of LNG multilayer flexible pipeline |
| CN113028158B (en) * | 2021-04-09 | 2022-01-04 | 大连理工大学 | Distributed assembly end connector is strengthened to ladder of LNG multilayer flexible pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20030701 |