JP2001311492A - Slip-on pipe joint - Google Patents
Slip-on pipe jointInfo
- Publication number
- JP2001311492A JP2001311492A JP2000131917A JP2000131917A JP2001311492A JP 2001311492 A JP2001311492 A JP 2001311492A JP 2000131917 A JP2000131917 A JP 2000131917A JP 2000131917 A JP2000131917 A JP 2000131917A JP 2001311492 A JP2001311492 A JP 2001311492A
- Authority
- JP
- Japan
- Prior art keywords
- guide member
- joint
- tube
- insertion hole
- pipe
- 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.)
- Granted
Links
Landscapes
- Joints That Cut Off Fluids, And Hose Joints (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、シール性が良好な
差込式管継手に関するものであり、主として蛇腹管を継
手本体内に差し込むだけで、良好なシール性と抜け止め
が行える差込式管継手に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug-in type pipe joint having a good sealing property. The plug-in type pipe joint can provide a good sealing property and a retaining property only by inserting a bellows pipe into a joint body. It relates to a pipe joint.
【０００２】[0002]
【従来の技術】一般に、ガス等の流体を流すフレキシブ
ル管を接続する差込式管継手としては、例えば実用新案
公報第２５６５４６９号公報等にて開示されている継手
が知られている。図８は上記公報にて開示されている管
継手を示す断面図であり、図示するようにこの管継手
は、フレキシブルになされた蛇腹管Ｆが挿入される接続
孔２が形成されたソケット４と、このソケット４の開口
端に螺合された締付け部材６と、上記締付け部材６がね
じ込み初期位置に位置決めするために上記ソケット４と
上記締付け部材６の両端部間に装着した略Ｃ字状の位置
決め部材８と、上記ソケット４の接続孔２の内部に放射
状に配置されて内周面が上記蛇腹管Ｆの外周面に対応し
て凹凸状に形成された複数のリテーナ１０と、この複数
のリテーナ１０を内径が拡大縮小するように弾性的に保
持する保持部材１２を備えている。そして、上記蛇腹管
Ｆを複数のリテーナ１０間に挿入した後、位置決め部材
８を外して締付け部材６をねじ込んで締め付けることに
より、このリテーナ１０を接続孔２の底部側へ押圧し
て、この蛇腹管Ｆをソケット４に固定するようにしてい
る。2. Description of the Related Art Generally, as a plug-in type pipe joint for connecting a flexible pipe through which a fluid such as gas flows, a joint disclosed in, for example, Japanese Utility Model Publication No. 2565469 is known. FIG. 8 is a cross-sectional view showing a pipe joint disclosed in the above-mentioned publication. As shown, the pipe joint includes a socket 4 having a connection hole 2 into which a flexible bellows tube F is inserted. A tightening member 6 screwed to the open end of the socket 4; and a substantially C-shaped mounting member mounted between both ends of the socket 4 and the tightening member 6 for positioning the tightening member 6 at the screwing initial position. A positioning member 8, a plurality of retainers 10 radially arranged inside the connection hole 2 of the socket 4, and having a plurality of retainers 10 whose inner peripheral surface is formed in an uneven shape corresponding to the outer peripheral surface of the bellows tube F; A retainer (12) is provided for elastically retaining the retainer (10) such that the inner diameter expands and contracts. Then, after inserting the bellows tube F between the plurality of retainers 10, the positioning member 8 is removed, and the tightening member 6 is screwed and tightened, whereby the retainer 10 is pressed toward the bottom side of the connection hole 2 and the bellows is pressed. The tube F is fixed to the socket 4.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上記した従
来の管継手では、蛇腹管Ｆを接続孔２内へ挿入した後、
位置決め部材８を外してから締付け部材６をソケット４
に締め付けるに際して、図示しない工具を用いて、これ
を行なうようになっている。このため、依然として工具
を用いて締め付ける作業が有り、このため、例えば蛇腹
管Ｆを挿入した後この締付けを忘れて漏れを発生させて
しまう場合があるなどの問題がある。また、位置決め部
材を外す手間が有り、簡単に接続できない。更に、複数
のリテーナを保持する弾性保持部材が必要で、構造が複
雑である。By the way, in the conventional pipe joint described above, after the bellows pipe F is inserted into the connection hole 2,
After the positioning member 8 is removed, the tightening member 6 is connected to the socket 4.
This is done by using a tool (not shown). For this reason, there is still a work of tightening using a tool. For this reason, there is a problem in that, for example, after the bellows tube F is inserted, the tightening may be forgotten and leakage may occur. In addition, there is trouble in removing the positioning member, and the connection cannot be easily performed. Further, an elastic holding member for holding a plurality of retainers is required, and the structure is complicated.
【０００４】そこで、本出願人は、先の出願（特願平１
１−３１６１５５号）において、蛇腹管を差し込むだけ
で簡単に接続できる差込式管継手を開示した。しかしな
がら、この管継手の場合には、差し込むだけで接続でき
る、という利点は有するが、内部にスプリング等を設け
ていることからやや構造が複雑化する、という改良点を
有していた。本発明は、以上のような問題点に着目し、
これを有効に解決すべく創案されたものである。本発明
の目的は、蛇腹管を継手本体内に挿入するだけでシール
部材を圧縮して確実にシールし、且つ抜け止めを果たす
ようにし、構造が簡単で安全な差込式管継手を提供する
ものである。Accordingly, the present applicant has filed an earlier application (Japanese Patent Application No.
No. 1-316155) discloses a plug-in type pipe joint which can be easily connected simply by inserting a bellows tube. However, in the case of this pipe joint, there is an advantage that the connection can be made by simply inserting the pipe joint, but there is an improvement in that the structure is slightly complicated because a spring or the like is provided inside. The present invention focuses on the above problems,
It was created to solve this effectively. SUMMARY OF THE INVENTION An object of the present invention is to provide a plug-in type pipe joint which has a simple structure and a safe structure, in which a sealing member is compressed and securely sealed by only inserting a bellows pipe into a joint main body, and is prevented from coming off. Things.
【０００５】[0005]
【課題を解決するための手段】請求項１に規定する発明
は、外周面が波山状に凹凸部を有する蛇腹管を接続する
差込式管継手において、前記蛇腹管を挿入するために内
部に段部状になされた管挿入孔が形成された継手本体
と、管挿通孔が形成され、先端に前記管挿入孔に内接し
てその長さ方向へ摺動移動可能になされた案内部材を有
する入口本体と、前記管挿入孔内に設けられて、前記案
内部材の挿入により押圧された時に前記蛇腹管の先端外
周面と密接するリング状の低硬質シール部材と、前記管
挿入孔内に設けられて、前記案内部材が挿入された時に
前記蛇腹管の凹部と係合するリテーナ部材と、前記案内
部材に設けられて、これが前記管挿入孔へ挿入された時
に前記管挿入孔の内壁側と係合する係合部材とを備える
ようにしたものである。The invention as defined in claim 1 is a plug-in type pipe joint for connecting a bellows tube having an uneven portion with a wave-shaped outer peripheral surface. A joint main body having a stepped tube insertion hole formed therein, and a guide member having a tube insertion hole formed at its distal end so as to be inscribed in the tube insertion hole and slidable in the length direction thereof. An inlet main body, a ring-shaped low-hard sealing member provided in the tube insertion hole and in close contact with the outer peripheral surface of the distal end of the bellows tube when pressed by the insertion of the guide member; and provided in the tube insertion hole. And a retainer member that is engaged with the concave portion of the bellows tube when the guide member is inserted, and an inner wall side of the tube insertion hole that is provided on the guide member when the guide member is inserted into the tube insertion hole. And an engaging member for engaging. .
【０００６】これにより、まず、上記蛇腹管を入口部材
の管挿入孔に挿通させ、継手本体の管挿入孔に挿入す
る。この状態で入口本体を継手本体側へ押圧して移動さ
せることにより、入口本体の案内部材の先端が低硬質シ
ール部材を押圧してこれを変形させることによって蛇腹
管の先端外周面に液密に密着させる。この時、上記案内
部材の先端に押圧されたリテーナ部材は、蛇腹管の外周
面の凹部と係合してロックされ、蛇腹管が抜け落ちない
ようになる。更に、上記案内部材が摺動移動した時に、
これに設けた係合部材が管挿入孔の内壁側と係合し、こ
の案内部材及びこれに一体化されている入口本体が脱落
しないように接合されることになる。このようにして、
蛇腹管を入口本体及び継手本体内に差し込んで挿入し、
次に、入口本体を継手本体側へ押し込むだけで、良好な
シール性を維持した状態で蛇腹管の接続を行なうことが
可能となる。[0006] Thus, first, the bellows tube is inserted through the tube insertion hole of the inlet member, and is inserted into the tube insertion hole of the joint body. In this state, by moving the inlet main body toward the joint main body side and moving the inlet main body, the front end of the guide member of the inlet main body presses and deforms the low rigid seal member, so that the outer peripheral end of the bellows tube is liquid-tight. Adhere. At this time, the retainer member pressed against the distal end of the guide member is locked by engaging with the concave portion on the outer peripheral surface of the bellows tube, so that the bellows tube does not fall out. Further, when the guide member slides,
The engaging member provided on the guide member engages with the inner wall side of the tube insertion hole, and the guide member and the inlet main body integrated with the guide member are joined so as not to fall off. In this way,
Insert and insert the bellows tube into the inlet body and the joint body,
Next, it is possible to connect the bellows tube while maintaining good sealing properties only by pushing the inlet main body toward the joint main body.
【０００７】この場合、請求項２に規定するように、前
記案内部材の先端には、前記案内部材が挿入された時
に、前記リテーナ部材と当接してこれを前記蛇腹管の軸
中心方向へ押圧する押圧テーパ面が形成されているよう
にしてもよい。これによれば、上記リテーナ部材が案内
部材の先端の押圧テーパ面と当接してリテーナ部材を蛇
腹管の中心軸方向へ押圧付勢するので、このリテーナ部
材は蛇腹管の凹部に強固に嵌まり込み、両者の結合が更
に確実となる。In this case, when the guide member is inserted into the distal end of the guide member, the guide member comes into contact with the retainer member and presses the retainer member in the axial center direction of the bellows tube. A pressing tapered surface may be formed. According to this, the retainer member comes into contact with the pressing tapered surface at the tip of the guide member to urge the retainer member in the direction of the central axis of the bellows tube, so that the retainer member is firmly fitted into the concave portion of the bellows tube. As a result, the connection between the two is further ensured.
【０００８】また、請求項３に規定するように、前記リ
ング状の低硬質シール部材の一端には、前記案内部材の
先端と当接する硬質スペーサ部材が設けられているよう
にしてもよい。これによれば、この硬質スペーサ部材
が、上記挿入されてくる上記案内部材の先端により押圧
されることになるので、低硬質シール部材をその長さ方
向に対して均一に圧縮して変形させることが可能となる
ので、これが蛇腹管の外摺面に一層均一に密着し、その
シール性を更に高めることが可能となる。[0008] Further, a rigid spacer member may be provided at one end of the ring-shaped low rigid seal member, the rigid spacer member being in contact with the tip of the guide member. According to this, the rigid spacer member is pressed by the tip of the inserted guide member, so that the low rigid seal member is uniformly compressed and deformed in the longitudinal direction. This makes it possible to more uniformly adhere to the outer sliding surface of the bellows tube, thereby further improving the sealing performance.
【０００９】また、請求項４に規定するように、例えば
前記係合部材は、前記入口本体の半径方向外方へ突出し
た突起部よりなる。また、請求項５に規定するように、
例えば前記突起部は、前記管挿入孔の内壁に設けられた
リング状の止め輪部材に係合されるようにしてもよい。Further, as defined in claim 4, for example, the engagement member comprises a projection projecting outward in the radial direction of the entrance main body. Also, as defined in claim 5,
For example, the projection may be engaged with a ring-shaped retaining ring member provided on the inner wall of the tube insertion hole.
【００１０】更に、請求項６に規定するように、例えば
前記継手本体の入口端には、前記止め輪部材を着脱する
ナット部材が螺合されているようにしてもよい。これに
よれば、一度結合した蛇腹管を取り外す場合には、螺合
されている上記ナット部材を取り外して分解すれば、蛇
腹管の取り外し、及び再接続が可能となる。また、請求
項７に規定するように、前記継手本体の内周面には、前
記入口本体を工具で押し込む場合に前記工具を係止させ
る工具止め突起が形成されているようにしてもよい。こ
の場合には、工具止め突起に工具を係合させて、入口本
体を工具により継手本体側へ押し込むことが可能とな
る。Further, as defined in claim 6, for example, a nut member for attaching and detaching the retaining ring member may be screwed to an inlet end of the joint body. According to this, in order to remove the bellows tube once connected, if the nut member screwed is removed and disassembled, the bellows tube can be removed and reconnected. Further, as defined in claim 7, the inner peripheral surface of the joint main body may be formed with a tool stopper projection for locking the tool when the inlet main body is pushed in with the tool. In this case, the tool can be engaged with the tool stopper projection, and the inlet body can be pushed into the joint body by the tool.
【００１１】[0011]
【発明の実施の形態】以下に、本発明に係る差込式管継
手の一実施例を添付図面に基づいて詳述する。図１は本
発明の差込式管継手を示す断面図、図２は低硬質シール
部材を示す斜視図、図３はリテーナ部材を示す斜視図、
図４は入口本体の結合前の状態を示す断面図、図５は入
口本体の結合後の状態を示す断面図、図６は必要な場合
に用いる工具の一例を示す斜視図、図７は工具を用いた
時の使用方法を示す図である。図示するように、この差
込式管継手１６は、例えばステンレスよりなるフレキシ
ブルな蛇腹管Ｆを接続するためのものであり、この蛇腹
管Ｆの外周面は波山状に凹部１８及び凸部２０が形成さ
れ、また、接続される先端部を除いて、軟質塩化ビニー
ルなどの軟質樹脂等よりなる被覆層２２により覆われて
いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a plug-in type pipe joint according to the present invention will be described below in detail with reference to the accompanying drawings. 1 is a sectional view showing a plug-in type pipe joint of the present invention, FIG. 2 is a perspective view showing a low-hardness seal member, FIG. 3 is a perspective view showing a retainer member,
FIG. 4 is a cross-sectional view showing a state before the inlet body is connected, FIG. 5 is a cross-sectional view showing a state after the inlet body is connected, FIG. 6 is a perspective view showing an example of a tool used when necessary, and FIG. It is a figure which shows the usage method at the time of using. As shown in the figure, the plug-in type pipe joint 16 is for connecting a flexible bellows tube F made of, for example, stainless steel, and the outer peripheral surface of the bellows tube F has a concave portion 18 and a convex portion 20 in a wave-like shape. It is formed and covered with a coating layer 22 made of a soft resin such as a soft vinyl chloride except for a tip portion to be connected.
【００１２】上記差込式管継手１６は、上記蛇腹管Ｆを
挿入するために内部に段部状になされた管挿入孔２４が
形成された継手本体２６と、中心に管挿通孔２８が形成
された入口本体３０とにより主に構成されている。上記
入口本体３０は、例えば黄銅等によりリング状に形成さ
れており、上記蛇腹管Ｆを挿通し得る大きさの管挿通孔
２８を中心に有する。この入口本体３０の外面は、例え
ば円柱状或いは六角柱状になされている。この入口本体
３０の一端には、これと一体的になされた例えば中空円
形リング状になされた案内部材３２が延出されて設けら
れており、この案内部材３２は、この外周面を、上記継
手本体２６の管挿入孔２４の内周面に摺接させて長さ方
向へ摺動移動可能に嵌め込まれている。この案内部材３
２も、上記入口本体３０と一体的に例えば黄銅により形
成されている。The plug-in type pipe joint 16 has a joint body 26 having a stepped tube insertion hole 24 formed therein for inserting the bellows tube F therein, and a tube insertion hole 28 formed at the center. And the main body 30 formed. The inlet main body 30 is formed in a ring shape by, for example, brass or the like, and has, at the center, a tube insertion hole 28 large enough to allow the bellows tube F to be inserted. The outer surface of the inlet main body 30 is formed in, for example, a column shape or a hexagonal column shape. At one end of the inlet main body 30, a guide member 32 integrally formed with the guide body 32, for example, in the form of a hollow circular ring is provided so as to extend therefrom. The main body 26 is slidably fitted in the inner peripheral surface of the tube insertion hole 24 so as to be slidable in the length direction. This guide member 3
2 is also formed integrally with the inlet main body 30 by, for example, brass.
【００１３】また、上記継手本体２６の管挿入孔２４の
拡径された段部３４には、図２にも示すような所定の高
さを有する円形リング状の低硬質シール部材３６が設置
されており、その中心孔は上記蛇腹管Ｆを挿通し得る大
きさになっている。この低硬質シール部材３６は、後述
するようにその高さ方向から押圧圧縮されることによっ
て蛇腹管Ｆの先端外周面と気密に密接される必要がある
ことから、このような機能を有する材料であるならば、
どのようなシール部材でもよく、例えばＪＩＳＡ硬度で
０〜２５度程度の低硬質ゴムを用いることができる。そ
して、この低硬質シール部材３６の先端側（入口側）に
は、これに当接させて例えば樹脂よりなる円形リング状
の硬質スペーサ部材３８が装着されており、後述するよ
うに、シール時に上記低硬質シール部材３６に対して均
一な圧縮押圧力を付与し得るようになっている。また、
この硬質スペーサ部材３８と上記挿入されている案内部
材３２の先端との間には、円形リング状のリテーナ部材
４０が介在されている。このリテーナ部材４０は、図３
にも示すように、例えば円形リング状のゴム部材４２
に、円弧状に分割された例えば金属片よりなる複数の係
合片４４を接合してなり、また各係合片４４の先端４４
Ａは、上記蛇腹間Ｆの凹部１８に嵌まり込み易いように
断面略半円状に成形されている。尚、このリテーナ部材
４０の材質及び構造は、上記蛇腹間Ｆの凹部１８に強固
に嵌合し得るものであれば、上記したものに限定されな
い。A circular ring-shaped low rigid seal member 36 having a predetermined height as shown in FIG. 2 is provided in the stepped portion 34 of the pipe insertion hole 24 of the joint main body 26 whose diameter is enlarged. The center hole is sized to allow the bellows tube F to pass therethrough. The low-hard sealing member 36 is required to be pressed and compressed from the height direction as described later, so that the low-rigid sealing member 36 must be in air-tight contact with the outer peripheral surface of the distal end of the bellows tube F. Therefore, a material having such a function is used. If there is
Any sealing member may be used, for example, a low hard rubber having a JISA hardness of about 0 to 25 degrees can be used. A circular ring-shaped hard spacer member 38 made of, for example, a resin is mounted on the distal end side (entrance side) of the low rigid seal member 36 so as to be in contact with the low rigid seal member 36. A uniform compression pressing force can be applied to the low rigid seal member 36. Also,
A circular ring-shaped retainer member 40 is interposed between the hard spacer member 38 and the tip of the inserted guide member 32. This retainer member 40 is shown in FIG.
As shown in FIG.
And a plurality of engaging pieces 44 made of, for example, metal pieces divided in an arc shape.
A is formed in a substantially semicircular cross section so as to be easily fitted into the concave portion 18 between the bellows F. The material and structure of the retainer member 40 are not limited to those described above, as long as the retainer member 40 can be firmly fitted in the concave portion 18 between the bellows F.
【００１４】そして、上記リテーナ部材４０に当接する
上記案内部材３２の先端は、蛇腹管Ｆの軸心方向へ内向
き傾斜した押圧テーパ面４６として形成されており、こ
の案内部材３２が挿入された際に、このリテーナ部材４
０を効率的に、且つ確実に蛇腹管Ｆの軸心方向へ、すな
わち蛇腹管Ｆの中心方向へ押し出すようになっている。
そして、上記案内部材３２の途中の外周面には、リング
状になされた２つの溝、すなわち前溝４８（図５も参
照）と後溝５０とが微少間隔だけ隔てて並行に形成され
ており、そして、この前溝４８と後溝５０との間が、結
果的に、入口本体３０の半径方向外方へ突出した突起部
よりなる係合部材５２として形成されることになる。
尚、この突起部（係合部材）５２の先端は、実際には、
案内部材３２の外周面の平面レベルと同一になされてい
る。The distal end of the guide member 32 that contacts the retainer member 40 is formed as a pressing tapered surface 46 that is inclined inward in the axial direction of the bellows tube F, and the guide member 32 is inserted. At this time, the retainer member 4
0 is efficiently and reliably pushed out in the axial direction of the bellows tube F, that is, in the center direction of the bellows tube F.
On the outer peripheral surface in the middle of the guide member 32, two ring-shaped grooves, that is, a front groove 48 (see also FIG. 5) and a rear groove 50 are formed in parallel at a slight interval. And, between the front groove 48 and the rear groove 50, as a result, an engagement member 52 formed of a protrusion protruding outward in the radial direction of the inlet main body 30 is formed.
The tip of the projection (engaging member) 52 is actually
It is the same as the plane level of the outer peripheral surface of the guide member 32.
【００１５】そして、上記前溝４８に対応させて、上記
管挿入孔２４の内周面には、同じく円形リング状の係止
溝５４が形成されている。そして、この前溝４８と上記
係止溝５４とが一体となった円形リング状の溝内には、
例えばステンレスよりなる円形リング状で、且つ断面略
矩形状の止め輪部材５６が収容されている。この止め輪
部材５６は、その半径方向において両溝４８、５４間を
跨がった状態となるような大きさに設定されている。ま
た、上記前溝４８を区画する後方側壁４８Ａ（図５参
照）、すなわち突起部５２の前方側面は、半径方向外方
に後向き（入口本体３０側）傾斜したテーパ面として形
成されており、案内部材３２の挿入時に、上記止め輪部
材５６が容易に上記突起部５２を乗り越えられるように
なっている。A circular ring-shaped locking groove 54 is formed on the inner peripheral surface of the tube insertion hole 24 so as to correspond to the front groove 48. Then, in the circular ring-shaped groove in which the front groove 48 and the locking groove 54 are integrated,
For example, a retaining ring member 56 having a circular ring shape made of stainless steel and having a substantially rectangular cross section is accommodated. The retaining ring member 56 is sized so as to straddle both grooves 48 and 54 in the radial direction. Further, a rear side wall 48A (see FIG. 5) that divides the front groove 48, that is, a front side surface of the projection 52 is formed as a tapered surface that is inclined rearward outward (toward the entrance main body 30) in the radial direction. When the member 32 is inserted, the retaining ring member 56 can easily get over the protrusion 52.
【００１６】そして、この継手本体２６の入口端には、
上記止め輪部材５６を着脱できるように、ナット部材６
０がねじ部６２により螺合されている。そして、上記案
内部材３２の基部には、補助的にシール性を確保するた
めの例えばＯリングよりなる水密シール部材６４が受け
られる。また、上記入口本体３０の内周面には、水密パ
ッキン６６が装着されており、挿入された蛇腹管Ｆの被
覆と密封シールし、外部より管継手内に腐食水等が浸入
することを防止するようになっている。また、この水密
パッキン６６の前方側（図中、継手本体側）には、一部
に半径方向へ抜ける貫通口６８を設け、この貫通口６８
に内部から外部へ気体を透過するが固体や液体は透過し
ない選択透過性部材７０（商品名サンマップ）を装着し
てある。この選択透過性部材７０は継手内部から外部へ
気体が透過するので、万が一蛇腹管Ｆに釘打ち等で穴が
開けられてガス漏れした際、蛇腹管Ｆの表面とこの外面
に被覆した樹脂の被覆層２２との間の間隙を伝わってガ
スが継手内に進入し、このガスが選択透過性部材７０を
透過して管継手１６の外部に噴出することになる。この
ため蛇腹管Ｆを配管した後、この管継手１６の貫通孔６
８の部分にガス漏れ検出器を近づけることで、蛇腹管Ｆ
の穴開き不良を容易に検出することができ、未然にガス
事故を防止できる。At the inlet end of the joint body 26,
The nut member 6 is attached so that the retaining ring member 56 can be attached and detached.
0 is screwed by the screw portion 62. A watertight seal member 64 made of, for example, an O-ring for ensuring the sealing performance is received at the base of the guide member 32. A watertight packing 66 is mounted on the inner peripheral surface of the inlet main body 30 to cover and seal the inserted bellows tube F, thereby preventing corrosive water and the like from entering the pipe joint from the outside. It is supposed to. In addition, a through hole 68 is provided at a part of the front side of the watertight packing 66 (in the figure, on the side of the joint main body) so as to partially pass through in the radial direction.
A selectively permeable member 70 (trade name: Sunmap) that transmits gas from the inside to the outside but does not transmit solids and liquids. Since the gas permeates through the joint from the inside to the outside of the joint, if a gas leaks due to a hole made in the bellows tube F by nailing or the like, if the gas leaks, the surface of the bellows tube F and the resin coated on the outer surface thereof may The gas passes through the gap between the coating layer 22 and enters the joint, and the gas permeates through the selectively permeable member 70 and is ejected to the outside of the pipe joint 16. For this reason, after piping the bellows pipe F, the through-hole 6
By bringing the gas leak detector close to the part 8, the bellows tube F
Can easily be detected, and a gas accident can be prevented beforehand.
【００１７】また、継手本体２６の他端側には他の部品
への接続用のねじ山７２が形成されると共に、中央部外
周面には必要な場合に、図６に示すような工具７２を用
いる時に使用される一対の工具止め突起７４が形成され
ている。尚、蛇腹管Ｆ同士を接続する場合には、上記し
たような構造を左右対称に両端に設けた継手を用いれば
よい。A thread 72 for connection to other parts is formed on the other end of the joint body 26, and a tool 72 as shown in FIG. A pair of tool stopper projections 74 used when using the tool are formed. When the bellows tubes F are connected to each other, a joint having the above-described structure provided at both ends symmetrically may be used.
【００１８】以上のように構成された差込式管継手１６
の使用方法について説明する。まず、作業者は図１に示
す状態から、蛇腹管Ｆの先端部を、入口本体３０の管挿
通孔２８及び継手本体２６の管挿通孔２４内に挿通させ
てこれを差し込み、図４に示すように蛇腹管Ｆの先端
を、管挿入孔２４の段部３４に当接させる。次に、作業
者は工具を用いないで入口本体３０のみを図４柱の矢印
Ａに示すように継手本体２６側へ完全に押し込む。尚、
工具を用いる場合は後述する。すると、図５に示すよう
に、この入口本体３０から前方へ突出している案内部材
３２の先端が硬質スペーサ部材３８と当接して低硬質シ
ール部材３６を圧縮するように作用する。この圧縮によ
り、低硬質シール部材３６は、弾性的に変形してその厚
みが大きくなって、すでに挿入されている蛇腹管Ｆの外
周面と液密に密接してここでシールされることになる。
また、この案内部材３２の挿入により、この先端の押圧
テーパ面４６に当接しているリテーナ部材４０は継手本
体２６の中心方向へ縮径するように押し出され、この結
果、リテーナ部材４０の先端半円状の各係合片４４は上
記蛇腹管Ｆの外周面の凹部１８に嵌まり込み、ここで強
固に係合されることになる。従って、この状態で蛇腹管
Ｆを引っ張ってもこれが継手本体２６から抜け出ること
はない。The plug-in type pipe joint 16 constructed as described above
How to use will be described. First, the worker inserts the tip of the bellows tube F into the tube insertion hole 28 of the inlet main body 30 and the tube insertion hole 24 of the joint main body 26 from the state shown in FIG. The bellows tube F is brought into contact with the step 34 of the tube insertion hole 24 as described above. Next, the operator completely pushes only the inlet main body 30 toward the joint main body 26 as shown by an arrow A in FIG. still,
The case where a tool is used will be described later. Then, as shown in FIG. 5, the distal end of the guide member 32 protruding forward from the inlet main body 30 contacts the hard spacer member 38 and acts to compress the low-hard seal member 36. Due to this compression, the low-rigid sealing member 36 is elastically deformed and its thickness is increased, and the low-rigid sealing member 36 is in liquid-tight contact with the outer peripheral surface of the bellows tube F already inserted, and is sealed here. .
The insertion of the guide member 32 pushes the retainer member 40 in contact with the pressing tapered surface 46 at the distal end so as to reduce the diameter toward the center of the joint main body 26. As a result, the distal half of the retainer member 40 Each circular engaging piece 44 fits into the concave portion 18 on the outer peripheral surface of the bellows tube F, and is firmly engaged here. Therefore, even if the bellows tube F is pulled in this state, the bellows tube F does not fall out of the joint main body 26.
【００１９】また更に、これと同時に、上記案内部材３
２が挿入される時、管挿入孔２４の内周壁に設けたリン
グ状の止め輪部材５６は、案内部材３２に設けた突起部
５２のテーパ面４８Ａと接触し、案内部材３２の挿入に
従って、止め輪部材５６の径が大きくなり、或いはこれ
と同時に案内部材３２の径が小さくなり、結果的に、突
起部５２は止め輪部材５６の内側をくぐり抜けて前進
し、この止め輪部材５６は図５に示すように係止溝５４
と後溝５０とにより一体的に形成されたリング状の溝内
に納まることになる。この時、この止め輪部材５６は、
突起部５２の後端にひっかかって係合された状態となる
ので、この状態で固定されることになり、結果的に、案
内部材３２及び入口本体３０が元の位置にスライド移動
することはない。Furthermore, at the same time, the guide member 3
When the guide member 32 is inserted, the ring-shaped retaining ring member 56 provided on the inner peripheral wall of the tube insertion hole 24 comes into contact with the tapered surface 48A of the projection 52 provided on the guide member 32. The diameter of the retaining ring member 56 increases, or at the same time, the diameter of the guide member 32 decreases. As a result, the protrusion 52 advances through the inside of the retaining ring member 56, and the retaining ring member 56 As shown in FIG.
And the rear groove 50 are housed in a ring-shaped groove formed integrally. At this time, the retaining ring member 56
Since it is engaged with the rear end of the protruding portion 52 and is engaged, it is fixed in this state, and as a result, the guide member 32 and the inlet main body 30 do not slide to the original position. .
【００２０】このように、図５に示すような状態で固定
されることになり、蛇腹管Ｆを、差し込みにより容易に
管継手１６に接続することができ、しかも良好なシール
性を維持し、抜けも確実に防止することができる。ま
た、このように蛇腹管Ｆを接合した後に、何らかの理由
で、この接合を解く場合には、継手本体２６の一端に螺
合により取り付けてあるナット部材６０を取り外し方向
へ回転し、このナット部材６０を継手本体２６側から外
す。これにより、上記止め輪部材５６も外れることから
蛇腹管Ｆの接合を断って、これを抜き取ることができ
る。また、ここでは工具を何ら用いることなく、手作業
で蛇腹管Ｆの接続を行なったが、図６に示すような工具
７２を補助的に用いるようにしてもよい。この工具７２
は、一対のＪ字状の支持フック８０と作用片８２を有
し、図７に示すようこの支持フック８０を上記継手本体
２６の工具止め突起７４に係合させ、この状態で工具７
２の他端を押し下げることにより作用片８２と当接する
入口本体３０は、継手本体２６側へスライド移動してこ
れに挿入されることになる。As described above, the bellows tube F is fixed in a state as shown in FIG. 5, so that the bellows tube F can be easily connected to the pipe joint 16 by insertion, and a good sealing property is maintained. It is possible to surely prevent the falling off. When the bellows tube F is joined and the joining is released for any reason, the nut member 60 screwed to one end of the joint main body 26 is rotated in the removing direction, and the nut member is rotated. Remove 60 from the joint body 26 side. Thereby, since the retaining ring member 56 also comes off, the joining of the bellows tube F can be cut off and removed. Further, here, the bellows tube F is manually connected without using any tool, but a tool 72 as shown in FIG. 6 may be used as an auxiliary. This tool 72
Has a pair of J-shaped support hooks 80 and an action piece 82, and engages the support hooks 80 with the tool fixing projections 74 of the joint body 26 as shown in FIG.
By pushing down the other end of 2, the inlet main body 30 that comes into contact with the action piece 82 slides toward the joint main body 26 and is inserted therein.
【００２１】尚、上記実施例における各部材の材料は、
単に一例を示したに過ぎず、これらに限定されないのは
勿論である。また、上記実施例では案内部材３２を円筒
体状に成形したが、これに限定されず、その長さ方向に
適当数のスリット（切れ目）を設け、挿入時にこの案内
部材３２の先端側が継手本体の中心方向へ屈曲容易とし
て止め輪部材５６の突起部５２に対する乗り越えを容易
に行なうようにしてもよい。また、逆に、止め輪部材５
６をある程度伸縮が容易な材料で構成するようにしても
よい。The material of each member in the above embodiment is as follows.
This is merely an example, and it is a matter of course that the present invention is not limited to these. In the above embodiment, the guide member 32 is formed in a cylindrical shape. However, the present invention is not limited to this. A suitable number of slits (cuts) are provided in the length direction, and the distal end side of the guide member 32 is inserted into the joint body at the time of insertion. May be easily bent in the direction of the center, so that the retaining ring member 56 can easily get over the projection 52. Conversely, the retaining ring member 5
6 may be made of a material which can be easily expanded and contracted to some extent.
【００２２】[0022]
【発明の効果】以上説明したように、本発明の差込式管
継手によれば、次のように優れた作用効果を発揮するこ
とができる。請求項１乃至５に規定する発明によれば、
蛇腹管を入口本体及び継手本体内に差し込んで挿入し、
次に、入口本体を継手本体側へ押し込むだけで、良好な
シール性を維持した状態で蛇腹管の接続を行なうことが
できる。従って、蛇腹管の接続操作を簡単に且つ確実に
行なうことができる。請求項６に規定する発明によれ
ば、一度結合した蛇腹管を取り外す場合には、螺合され
ている上記ナット部材を取り外して分解すれば、蛇腹管
の取り外し、及び再接続ができる。As described above, according to the plug-in type pipe joint of the present invention, the following excellent functions and effects can be exhibited. According to the invention defined in claims 1 to 5,
Insert and insert the bellows tube into the inlet body and the joint body,
Next, the bellows tube can be connected while maintaining good sealing properties only by pushing the inlet main body toward the joint main body. Therefore, the connecting operation of the bellows tube can be easily and reliably performed. According to the invention defined in claim 6, when removing the bellows tube once connected, if the nut member screwed is removed and disassembled, the bellows tube can be removed and reconnected.
【図１】本発明の差込式管継手を示す断面図である。FIG. 1 is a sectional view showing a plug-in type pipe joint of the present invention.
【図２】低硬質シール部材を示す斜視図である。FIG. 2 is a perspective view showing a low rigid seal member.
【図３】リテーナ部材を示す斜視図である。FIG. 3 is a perspective view showing a retainer member.
【図４】入口本体の結合前の状態を示す断面図である。FIG. 4 is a sectional view showing a state before the inlet main body is connected.
【図５】入口本体の結合後の状態を示す断面図である。FIG. 5 is a cross-sectional view showing a state after the inlet main body is connected.
【図６】必要な場合に用いる工具の一例を示す斜視図で
ある。FIG. 6 is a perspective view showing an example of a tool used when necessary.
【図７】工具を用いた時の使用方法を示す図である。FIG. 7 is a diagram showing a method of using a tool.
【図８】従来の管継手の一例を示す断面図である。FIG. 8 is a sectional view showing an example of a conventional pipe joint.
１６ 差込式管継手 １８ 凹部 ２０ 凸部 ２２ 被覆層 ２４ 管挿入孔 ２６ 継手本体 ２８ 管挿通孔 ３０ 入口本体 ３２ 案内部材 ３６ 低硬質シール部材 ４０ リテーナ部材 ４６ 押圧テーパ面 ５２ 係合部材（突起部） ５６ 止め輪部材 ６０ ナット部材 ７４ 工具止め突起 Ｆ 蛇腹管 16 Plug-in type pipe joint 18 Depression 20 Convex part 22 Coating layer 24 Pipe insertion hole 26 Joint main body 28 Pipe insertion hole 30 Inlet main body 32 Guide member 36 Low rigid seal member 40 Retainer member 46 Press taper surface 52 Engagement member (projection ) 56 retaining ring member 60 nut member 74 tool retaining projection F bellows tube
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤吉 稔 三重県桑名市大福二番地 日立金属株式会 社桑名工場内 (72)発明者 大久保 淳 東京都港区海岸１丁目５番20号 東京瓦斯 株式会社内 (72)発明者 南 智之 東京都港区海岸１丁目５番20号 東京瓦斯 株式会社内 (72)発明者 藤縄 靖志 埼玉県川口市新井町13−14−102 Ｆターム(参考） 3C031 DD28 3H017 CA05 3J106 AB01 BA01 BB01 BC04 BD01 BE12 BE13 BE29 BE32 CA16 EA03 EB05 EC01 EC07 ED12 EE02 EF05 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Minoru Fujiyoshi 2nd Daifuku, Kuwana-shi, Mie Hitachi Metals Co., Ltd. Kuwana Plant (72) Inventor Jun Okubo 1-5-20 Kaigan, Minato-ku, Tokyo Tokyo Gas Co., Ltd. In-company (72) Inventor Tomoyuki Minami 1-5-20 Kaigan, Minato-ku, Tokyo Tokyo Gas Co., Ltd. (72) Inventor Yasushi Fujina 13-14-102 Araicho, Kawaguchi-shi, Saitama F-term (reference) 3C031 DD28 3H017 CA05 3J106 AB01 BA01 BB01 BC04 BD01 BE12 BE13 BE29 BE32 CA16 EA03 EB05 EC01 EC07 ED12 EE02 EF05
Claims (7)
を接続する差込式管継手において、前記蛇腹管を挿入す
るために内部に段部状になされた管挿入孔が形成された
継手本体と、管挿通孔が形成され、先端に前記管挿入孔
に内接してその長さ方向へ摺動移動可能になされた案内
部材を有する入口本体と、前記管挿入孔内に設けられ
て、前記案内部材の挿入により押圧された時に前記蛇腹
管の先端外周面と密接するリング状の低硬質シール部材
と、前記管挿入孔内に設けられて、前記案内部材が挿入
された時に前記蛇腹管の凹部と係合するリテーナ部材
と、前記案内部材に設けられて、これが前記管挿入孔へ
挿入された時に前記管挿入孔の内壁側と係合する係合部
材とを備えたことを特徴とする差込式管継手。1. A plug-in type pipe joint for connecting a bellows tube having a corrugated portion with a corrugated outer peripheral surface, wherein a stepped tube insertion hole is formed inside for inserting the bellows tube. A joint main body, an inlet main body having a pipe insertion hole formed therein, and a guide member at the tip end inscribed in the pipe insertion hole and slidably movable in the length direction; and provided in the pipe insertion hole. A ring-shaped low-hard seal member that is in close contact with the outer peripheral surface of the bellows tube when pressed by the insertion of the guide member; and a bellows provided in the tube insertion hole when the guide member is inserted. A retainer member for engaging with the concave portion of the tube; and an engaging member provided on the guide member and engaging with an inner wall side of the tube insertion hole when the guide member is inserted into the tube insertion hole. Plug-in type pipe fitting.
が挿入された時に、前記リテーナ部材と当接してこれを
前記蛇腹管の軸中心方向へ押圧する押圧テーパ面が形成
されていることを特徴とする請求項１記載の差込式管継
手。2. A distal end of the guide member is formed with a pressing taper surface which, when the guide member is inserted, comes into contact with the retainer member and presses the retainer member in the axial center direction of the bellows tube. The plug-in type pipe joint according to claim 1, wherein:
には、前記案内部材の先端と当接する硬質スペーサ部材
が設けられていることを特徴とする請求項１または２記
載の差込式管継手。3. The plug-in tube according to claim 1, wherein a rigid spacer member is provided at one end of the ring-shaped low rigid seal member, the rigid spacer member being in contact with the distal end of the guide member. Fittings.
向外方へ突出した突起部よりなることを特徴とする請求
項１乃至３のいずれかに記載の差込式管継手。4. The plug-in type pipe joint according to claim 1, wherein said engagement member comprises a projection projecting outward in a radial direction of said inlet main body.
けられたリング状の止め輪部材に係合されることを特徴
とする請求項４記載の差込式管継手。5. The plug-in type pipe joint according to claim 4, wherein the projection is engaged with a ring-shaped retaining ring member provided on an inner wall of the pipe insertion hole.
部材を着脱するナット部材が螺合されていることを特徴
とする請求項５記載の差込式管継手。6. The plug-in type pipe joint according to claim 5, wherein a nut member for attaching and detaching the retaining ring member is screwed to an inlet end of the joint body.
体を工具で押し込む場合に前記工具を係止させる工具止
め突起が形成されていることを特徴とする請求項１乃至
６のいずれかに記載の差込式管継手。7. The joint body according to claim 1, wherein a tool stopper projection is formed on an inner peripheral surface of the joint body to lock the tool when the inlet body is pushed by the tool. The plug-in type pipe joint described in Crab.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000131917A JP4429472B2 (en) | 2000-05-01 | 2000-05-01 | Plug-in fittings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000131917A JP4429472B2 (en) | 2000-05-01 | 2000-05-01 | Plug-in fittings |
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| Publication Number | Publication Date |
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| JP2001311492A true JP2001311492A (en) | 2001-11-09 |
| JP4429472B2 JP4429472B2 (en) | 2010-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2000131917A Expired - Fee Related JP4429472B2 (en) | 2000-05-01 | 2000-05-01 | Plug-in fittings |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009127758A (en) * | 2007-11-26 | 2009-06-11 | Osaka Gas Co Ltd | Pipe fitting for flexible pipe |
| JP2009127759A (en) * | 2007-11-26 | 2009-06-11 | Osaka Gas Co Ltd | Pipe fitting for flexible pipe |
| JP2009127757A (en) * | 2007-11-26 | 2009-06-11 | Osaka Gas Co Ltd | Pipe fitting for flexible pipe |
| JP2012233587A (en) * | 2012-07-17 | 2012-11-29 | Osaka Gas Co Ltd | Flexible pipe joint |
| CN113418070A (en) * | 2021-06-02 | 2021-09-21 | 真兰管业科技有限公司 | Direct-insertion and direct-drawing type stainless steel corrugated pipe quick connector |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130088023A (en) | 2010-06-29 | 2013-08-07 | 미쯔비시 가스 케미칼 컴파니, 인코포레이티드 | Polyamide compound |
-
2000
- 2000-05-01 JP JP2000131917A patent/JP4429472B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009127758A (en) * | 2007-11-26 | 2009-06-11 | Osaka Gas Co Ltd | Pipe fitting for flexible pipe |
| JP2009127759A (en) * | 2007-11-26 | 2009-06-11 | Osaka Gas Co Ltd | Pipe fitting for flexible pipe |
| JP2009127757A (en) * | 2007-11-26 | 2009-06-11 | Osaka Gas Co Ltd | Pipe fitting for flexible pipe |
| JP2012233587A (en) * | 2012-07-17 | 2012-11-29 | Osaka Gas Co Ltd | Flexible pipe joint |
| CN113418070A (en) * | 2021-06-02 | 2021-09-21 | 真兰管业科技有限公司 | Direct-insertion and direct-drawing type stainless steel corrugated pipe quick connector |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4429472B2 (en) | 2010-03-10 |
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