JPS60139988A - Pipe joint - Google Patents
Pipe jointInfo
- Publication number
- JPS60139988A JPS60139988A JP58245057A JP24505783A JPS60139988A JP S60139988 A JPS60139988 A JP S60139988A JP 58245057 A JP58245057 A JP 58245057A JP 24505783 A JP24505783 A JP 24505783A JP S60139988 A JPS60139988 A JP S60139988A
- Authority
- JP
- Japan
- Prior art keywords
- annular body
- pipe
- joint
- nut
- wedge
- 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 With Pressure Members (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔技術分野〕
本発明は、管継手に係り、特にフッ化水素酸等のエツチ
ング液のような腐蝕性の液体を流す管を接続する場合等
に好適な管継手に関する。[Detailed Description of the Invention] [Technical Field] The present invention relates to a pipe joint, and particularly to a pipe joint suitable for connecting a pipe through which a corrosive liquid such as an etching solution such as hydrofluoric acid flows. .
第１図は従来のこの種の管継手を示す。この図において
、１は接続すべき管、２は継手本体、３は環状体、４は
ナツトであり、これらの部材１〜４はそれぞれフッ素樹
脂等の耐蝕性に優れた材料によって構成されている。前
記環状体３は先端側および後端側にそれぞれ縦断面がく
さび状をなすくさび状部３ａ、３ｂを形成されており、
かつ管１の端部付近に嵌合されている。また、前記ナツ
ト４はその内部に環状体３を収容した状態で継手本体２
に螺合される。FIG. 1 shows a conventional pipe joint of this type. In this figure, 1 is a pipe to be connected, 2 is a joint body, 3 is an annular body, and 4 is a nut, and each of these members 1 to 4 is made of a material with excellent corrosion resistance such as fluororesin. . The annular body 3 has wedge-shaped portions 3a and 3b each having a wedge-shaped longitudinal section formed on the front end side and the rear end side,
And it is fitted near the end of the tube 1. Further, the nut 4 is attached to the joint body 2 with the annular body 3 accommodated therein.
is screwed into the
そして、ナツト４が締め付けられると、環状体３の後端
側のくさび状部３ｂが管１の外周面とナツト４の内部に
形成されたテーパー面４ａとの間に食い込むと同時に、
ナツト４によって環状体３が継手本体２の方に押される
ことにより、環状体３の先端側のくさび状部３ａも管１
の外周面と継手本体２の内部に形成されたテーパー面２
ａとの３−
間に食い込む。When the nut 4 is tightened, the wedge-shaped portion 3b on the rear end side of the annular body 3 bites between the outer peripheral surface of the tube 1 and the tapered surface 4a formed inside the nut 4, and at the same time,
As the annular body 3 is pushed toward the joint body 2 by the nut 4, the wedge-shaped portion 3a on the tip side of the annular body 3 also
A tapered surface 2 formed on the outer peripheral surface of the joint body 2 and inside the joint body 2.
It cuts into the space between 3- and a.
これにより、くさび状部３ａが管１の外周面およびテー
パー面２ａに押圧されるため、環状体３と管１との間の
シールおよび環状体３と継手本体２との間のシールがな
される。また、同時に、くさび状部３ａおよび３ｂが管
１の外周面に押圧される結果、環状体３ひいては継手本
体２およびナツト４が管１に対して固定される。As a result, the wedge-shaped portion 3a is pressed against the outer peripheral surface and the tapered surface 2a of the tube 1, so that a seal is created between the annular body 3 and the tube 1 and between the annular body 3 and the joint body 2. . At the same time, the wedge-shaped portions 3a and 3b are pressed against the outer circumferential surface of the tube 1, so that the annular body 3, as well as the joint body 2 and the nut 4, are fixed to the tube 1.
しかしながら、この従来の管継手においては、単に環状
体３のくさび状部３ａ、３ｂを管１の外周面に対し押圧
することによってのみ、管１に対して環状体３ひいては
継手本体２を固定せんとする構造であるため、管路に作
用する振動、圧力、熱等によって、管１が、環状体３ひ
いては継手本体２から抜けてしまうことがあるという欠
点があった。However, in this conventional pipe joint, the annular body 3 and thus the joint body 2 are fixed to the pipe 1 only by pressing the wedge-shaped parts 3a and 3b of the annular body 3 against the outer peripheral surface of the pipe 1. Because of this structure, there was a drawback that the pipe 1 could come off from the annular body 3 and eventually from the joint body 2 due to vibrations, pressure, heat, etc. acting on the pipe line.
また、この従来の管継手においては、管１に対して環状
体３を適正な位置に確実に位置決めする機構が設けられ
ていないため、この管継手と管１との接続作業の際、管
１に対する環状体３の位置 −
決めに神経を使わなければならず、作業性が悪いという
欠点もあった。そして、もし誤って第２図のように管１
が環状体３から半ば抜けかけている状態で、ナツト４を
継手本体２に螺合してしまうとＪ管１が前記振動等によ
り環状体３ひいては継手本体２から簡単に抜は落ちてし
まうこととなっていた。In addition, this conventional pipe joint is not provided with a mechanism for reliably positioning the annular body 3 at an appropriate position with respect to the pipe 1, so when connecting the pipe joint and the pipe 1, the pipe The position of the annular body 3 relative to the cylindrical body 3 must be determined with great care, which also has the drawback of poor workability. Then, if you accidentally turn tube 1 as shown in Figure 2.
If the nut 4 is screwed into the joint body 2 while the J-tube 1 is about to fall out of the annular body 3, the J pipe 1 will easily fall out of the annular body 3 and eventually the joint body 2 due to the vibrations. It became.
第３図および４図は他の従来の管継手を示す。Figures 3 and 4 show other conventional pipe fittings.
これらの図において、５は接続されるべき管、６は継手
本体、７はナツト、８はナツト７と一体に設けられた環
状体であり、これらの部材５〜８はフッ素樹脂等の耐蝕
性に優れた材料によって構成されている。また、前記管
５は、一端部付近の外周面に溝５ａを設けられている。In these figures, 5 is a pipe to be connected, 6 is a joint body, 7 is a nut, and 8 is an annular body provided integrally with the nut 7. These members 5 to 8 are made of corrosion-resistant material such as fluororesin. Constructed from superior materials. Further, the tube 5 is provided with a groove 5a on the outer circumferential surface near one end.
また、前記環状体３の縦断面はくさび状とされている。Further, the longitudinal section of the annular body 3 is wedge-shaped.
そして、ナツト７が継手本体６に螺合されて締め付けら
れると、環状体８の先端部が管５の溝５ａと継手本体６
の内周面の一部との間に食い込み、該環状体８の先端部
が溝５８および継手本体６の両胸面の一部に押圧される
ことにより、環状体８−ｔ＋−
と管５との間のシールおよび環状体８と継手本体６との
間のシールが図られる。また、同時に、環状体８の先端
部と溝５ａとが係合されるため、振動、圧力、熱等によ
って管５が継手本体６から抜は出る虞がなくなる。また
、環状体８と１Ｉ５ａとの係合により、環状体８が管５
に対して自ずと適正な位置に確実に位置決めされるので
、前記第１図の管継手の場合のように、管５に対する環
状体８の位置決めに神経を使う必要がなく、作業性が非
常に良くなる。When the nut 7 is screwed into the joint body 6 and tightened, the tip of the annular body 8 is connected to the groove 5a of the pipe 5 and the joint body 6.
The distal end of the annular body 8 is pressed against the groove 58 and a part of both chest surfaces of the joint body 6, so that the annular body 8-t+- and the tube 5 A seal between the annular body 8 and the joint body 6 is achieved. At the same time, since the tip of the annular body 8 and the groove 5a are engaged, there is no possibility that the pipe 5 will be pulled out of the joint body 6 due to vibration, pressure, heat, or the like. Also, due to the engagement between the annular body 8 and 1I5a, the annular body 8 is connected to the pipe 5.
Since the annular body 8 is automatically and reliably positioned at the proper position, unlike the case of the pipe joint shown in FIG. Become.
しかしながら、この管継手においては、上述のように環
状体８の同一部分（先端部）に、（＋）管５および継手
本体６に押圧されて環状体８と管５との間および継手本
体６との間をシールする機能と、（１１）溝５ａに係合
されて管５の軸方向の移動を阻止する機能との両方を果
させなければならないので、
（ａ）環状体８、継手本体６および溝５ａを＾精度に加
工する必要があるので、環状体８および継手本体６の製
造コスト並びに溝５ａの加工コストが高くなる。However, in this pipe joint, as described above, the same part (tip part) of the annular body 8 is pressed by the (+) pipe 5 and the joint body 6, and the space between the annular body 8 and the pipe 5 and the joint body 6 are pressed. (a) Annular body 8, joint body 6 and the groove 5a need to be machined with precision, the manufacturing cost of the annular body 8 and the joint body 6 and the machining cost of the groove 5a become high.
（ｂ）ナラ１〜７を手で締め付けるのみでは、環状体８
と管５および継手本体６との間のシールを良好にするこ
とができず、器具を用いてナツト７を非常にきつく締め
付ける必要がある。(b) If only the nuts 1 to 7 are tightened by hand, the annular body 8
It is not possible to obtain a good seal between the pipe 5 and the fitting body 6, and it is necessary to tighten the nut 7 very tightly using instruments.
等の欠点があった。There were other drawbacks.
本発明は、前記従来の欠点を解消するためになされたも
ので、振動、圧ノコ、熱等の影響によって管が継手本体
から抜ける虞がないとともに、環状体、継手本体、管等
の部品の加工精度を比較的に高精度とする必要がなく、
コストの低減を図ることでき、しかもナツトを手で締め
るだけで十分なシール性能を得ることができる管継手を
提供することを目的とする。The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional art, and there is no possibility that the pipe will come out of the joint body due to the effects of vibration, pressure saw, heat, etc. There is no need for relatively high machining accuracy,
To provide a pipe joint that can reduce costs and provide sufficient sealing performance just by manually tightening a nut.
本発明による管継手は、環状体と管の外周面との間のシ
ールおよび環状体と継手本体との間のシールを図る部分
と、環状体ひいてはナツトおよび継手本体に対する管の
軸方向の移動を阻止する部７−
分とを、別個に設けることにより、上述の目的を達成せ
んとするものである。すなわち、本発明による管継手は
、中空状の継手本体と、この継手本体の外周部に形成さ
れた雄ねじ部と、この雄ねじ部に螺合されるナツトと、
このナツトの内部に収容された環状体と、この環状体の
先端部に形成された縦断面がくさび状をなすくさび状部
とを有してなり、前記ナツトが締め付けられると、該ナ
ツトとともに前記環状体が移動しようとして、前記くさ
び状部が前記継手本体と前記管の外周部との間に食い込
む管継手において、前記環状体に、該環状体に対して少
なくとも軸方向かつ前記継手本体から遠ざかる向きには
移動不能なように、前記くさび状部とは別個の突起を設
けるとともに、この突起を前記管の外周部に、該管が前
記環状体に対して少なくとも軸方向かつ前記継手本体か
ら遠ざかる向ぎには移動不能となるように係合するもの
である。The pipe fitting according to the present invention includes a portion that provides a seal between the annular body and the outer peripheral surface of the pipe and a seal between the annular body and the joint body, and a portion that prevents axial movement of the pipe relative to the annular body, the nut, and the joint body. The above object is achieved by separately providing the blocking portion 7-. That is, the pipe joint according to the present invention includes a hollow joint body, a male threaded portion formed on the outer periphery of the joint body, and a nut screwed into the male threaded portion.
The nut includes an annular body housed inside the nut, and a wedge-shaped part formed at the tip of the annular body and having a wedge-shaped longitudinal section. When the nut is tightened, the nut and the In a pipe joint in which the wedge-shaped portion bites between the fitting body and the outer circumference of the pipe when the annular body is about to move, the annular body is moved at least axially relative to the annular body and away from the joint body. a protrusion separate from the wedge-shaped part so as to be immovable in the direction, and this protrusion is provided on the outer periphery of the tube so that the tube is at least axially relative to the annular body and away from the coupling body; It is engaged so that it cannot be moved in the opposite direction.
以下、本発明を図面に示す実施例に基づいて説８− 明する。 Hereinafter, the present invention will be explained based on the embodiments shown in the drawings. I will clarify.
第５図は本発明による管継手の一実施例を示す半断面図
、第６図は該実施例の要部を示す拡大断面図である。こ
れらの図において、９は接続されるべき管であり、フッ
化水素酸等の腐蝕性の液体を通すために、フッ素樹脂等
の耐蝕性に優れた材料によって構成されている。この管
９の一端部付近の外周部には、横断面直角三角形状の溝
９ａが周方向に沿って環状に設けられている。FIG. 5 is a half-sectional view showing an embodiment of the pipe joint according to the present invention, and FIG. 6 is an enlarged sectional view showing the main parts of the embodiment. In these figures, 9 is a pipe to be connected, which is made of a material with excellent corrosion resistance such as fluororesin in order to pass a corrosive liquid such as hydrofluoric acid. A groove 9a having a right triangular cross section is provided in an annular manner along the circumferential direction on the outer circumference near one end of the tube 9.
１０は環状体であり、ＰＴＦＥ （ポリ四フッ化エチレ
ン樹脂）等の耐蝕性に優れかつ比較的に柔らかい材料に
よって構成されている。この環状体１０の内周側には、
管９の溝９ａに対応して横断面直角三角形状の突起１０
ａが周方向に沿って環状に設けられており、この突起１
０ａは溝９ａに係合されている。そして、これにより、
管９は環状体１０に対して軸方向かつ後述する継手本体
１１から遠ざかる向きには移動不能とされている。Reference numeral 10 denotes an annular body made of a relatively soft material with excellent corrosion resistance, such as PTFE (polytetrafluoroethylene resin). On the inner peripheral side of this annular body 10,
A protrusion 10 having a right triangular cross section corresponds to the groove 9a of the tube 9.
a is provided in an annular shape along the circumferential direction, and this protrusion 1
0a is engaged with the groove 9a. And with this,
The tube 9 cannot be moved in the axial direction relative to the annular body 10 and in the direction away from a joint body 11, which will be described later.
前記環状体１０の両端部は、その外周部にテーパーを付
けられている。この結果、環状体１０の両端部には、縦
断面がくさび状をなすくさび状部１０ｂ、１０Ｇが形成
されている。Both ends of the annular body 10 are tapered at their outer peripheries. As a result, wedge-shaped portions 10b and 10G each having a wedge-shaped longitudinal section are formed at both ends of the annular body 10.
１１は継手本体であり、ＰＴＦＥ等の耐蝕性に優れかつ
比較的柔かい材料によって構成されている。この継手本
体１１は、その中心部に流体通路１２を貫通されること
によって中空状とされている。また、この継手本体１１
の一端部側の外周部には雄ねじ部１１ａ１他端部側の外
周部には雄ねじ部１１ｂ１中央部の外周部には六角部１
１Ｇがそれぞれ一体に設けられている（なお、雄ねじ部
１１ａは管９とは別の部材に継手本体１１を接続するた
めに用いられるものである）。さらに、この継手本体１
１の雄ねじ部１１ｂ側の端部付近の内周面には、環状体
１０のくさび状部１０ｂに対応するテーパー面１１ｄが
形成されている。Reference numeral 11 denotes a joint body, which is made of a relatively soft material with excellent corrosion resistance, such as PTFE. The joint body 11 has a hollow shape with a fluid passage 12 passing through its center. In addition, this joint body 11
A male threaded portion 11a is provided on the outer periphery of one end, a male threaded portion 11b is provided on the outer periphery of the other end, and a hexagonal portion 1 is provided on the outer periphery of the central portion.
1G are provided integrally with each other (the male threaded portion 11a is used to connect the joint body 11 to a member other than the pipe 9). Furthermore, this joint body 1
A tapered surface 11d corresponding to the wedge-shaped portion 10b of the annular body 10 is formed on the inner circumferential surface near the end on the male threaded portion 11b side of the annular body 10.
１３はナツトであり、ＰＦＡ （四フッ化エチレンーパ
〜）［ｌロアルキルビニルエーテル共重合樹脂）または
ＰＰ（ポリプロピレン〉等の耐蝕性に優れかつ比較的に
硬い＠利によって構成されており、このナツト１３の内
周側には、環状体１０のくさび状部１０ｃに対応するテ
ーパー面１３ａが設けられている。13 is a nut, which is made of PFA (tetrafluoroethylene polymer) [l-roalkyl vinyl ether copolymer resin] or PP (polypropylene), which has excellent corrosion resistance and is relatively hard. A tapered surface 13a corresponding to the wedge-shaped portion 10c of the annular body 10 is provided on the inner peripheral side of the annular body 10.
この管継手においても、前記第１図の従来の管継手の場
合と同様にして、ナツト１３は、その内部に環状体１０
を収容した状態で継手本体１１に螺合される。そして、
このナツト１３が締め付けられると、該ナツト１３のテ
ーパー面１３ａが環状体１０の一方のくさび状部１０Ｃ
に当接されることにより、環状体１０が継手本体１１の
方に押され、環状体１０の他方のくさび状部１０ｂが管
９の外周面と継手本体１１のテーパー面１１ｄとの間に
食い込む。In this pipe joint as well, the nut 13 has an annular body 10 inside it, as in the case of the conventional pipe joint shown in FIG.
is screwed into the joint main body 11 in a state where it is accommodated. and,
When this nut 13 is tightened, the tapered surface 13a of the nut 13 is attached to one wedge-shaped portion 10C of the annular body 10.
, the annular body 10 is pushed toward the joint body 11, and the other wedge-shaped portion 10b of the annular body 10 bites between the outer peripheral surface of the tube 9 and the tapered surface 11d of the joint body 11. .
これにより、くさび状部１０ｂが管９の外周面およびテ
ーパー面ｌｉｄに強（押圧され、環状体１０と管９との
間のシールおよび環状体１０と継手本体１１との間のシ
ールが図られる。As a result, the wedge-shaped portion 10b is strongly pressed against the outer circumferential surface of the tube 9 and the tapered surface lid, and a seal is achieved between the annular body 10 and the tube 9 and between the annular body 10 and the joint body 11. .
この管継手においては、前記のように、環状体１０の突
起１０ａが管９の溝９ａに係合されることにより、環状
体１０に対して管９が軸方向かつ移動体１１から遠ざか
る向きにはに移動不能とさ−１１−
れているので、振動、圧力、熱等によって管９が環状体
１０ひいては継手本体１１１’ｌ−ら扱けてしまう虞が
ない。In this pipe joint, as described above, the protrusion 10a of the annular body 10 is engaged with the groove 9a of the tube 9, so that the tube 9 is axially moved relative to the annular body 10 and away from the movable body 11. Since the tube 9 is not movable, there is no risk that the tube 9 will be manipulated by the annular body 10 and the joint body 111'l due to vibration, pressure, heat, etc.
そして、環状体１０のくさび状部１０ｂは、継手本体１
１と管９の外周面との間に食い込んで、環状体１０と管
９の外周面との間のシールおよび環状体１０と継手本体
１１との間のシールを図る機能のみを果し、また突起１
０ａは溝９８に係合されて管９の軸方向の移動を阻止す
る機能のみを果すので、くさび状部１０ｂ、突起１０ｄ
、テーパー面１１ｄおよび溝９ａの加工精度を高精度と
する必要がなく、環状体１０および継手本体１１の製造
コストおよび管９に対する溝９８の加工コストを安価と
することができるとともに、ナツト１３を手で締め付け
るだけで、前記２つの部分のシールを充分なものにする
ことができる。The wedge-shaped portion 10b of the annular body 10 is connected to the joint body 1.
1 and the outer circumferential surface of the tube 9, and serves only to seal between the annular body 10 and the outer circumferential surface of the tube 9 and between the annular body 10 and the joint body 11, and Protrusion 1
0a is engaged with the groove 98 and serves only to prevent the tube 9 from moving in the axial direction, so the wedge-shaped portion 10b and the protrusion 10d
, it is not necessary to make the tapered surface 11d and the groove 9a highly accurate, and the manufacturing cost of the annular body 10 and the joint body 11 and the machining cost of the groove 98 for the pipe 9 can be reduced, and the nut 13 can be Manual tightening is sufficient to provide a sufficient seal between the two parts.
また、突起１０ａと満９ａとの係合により、環状体１０
が管９に対して自ずと適正な位置に確実に位置決めされ
るので、前記第１図の管継手の場合のように、管９に対
する環状体１００位置決めに神経を使う必要がなく、作
業性が非常に良くなる。Further, due to the engagement between the protrusion 10a and the ring 9a, the annular body 10
Since the annular body 100 is automatically and reliably positioned at the proper position relative to the pipe 9, there is no need to be careful in positioning the annular body 100 relative to the pipe 9, unlike in the case of the pipe joint shown in FIG. 1, and the work efficiency is extremely high. It gets better.
なお、この種の管継手においては、一般にナツトは強度
の関係上、比較的に硬い材料で構成する必要があるので
、仮に環状体１０をナツト１３と一体とすると、必然的
に環状□体１０も硬い材料で構成する必要が生じる。こ
のた′め、管９および継手水□体１１も硬い材料で構成
されている場合には、環状体１０と管９および継手水・
休１１との間の接触が硬い材料同士の接触となる□ため
、これらの間のシールを良好にするには、□す・ット１
３の締め付は力を比較的に大きくするとともに、環状体
１０および管９の溝９ａの加工精度を高精度とする必要
が生じる。しかし、本実施例□′では、環状体１０がナ
ツト１３と別体とされているので、上述のような不都合
を避けることができる。In addition, in this type of pipe joint, the nut generally needs to be made of a relatively hard material in terms of strength, so if the annular body 10 is integrated with the nut 13, the annular body 10 will inevitably be made of a relatively hard material. It also becomes necessary to construct it from a hard material. Therefore, when the pipe 9 and the joint water body 11 are also made of hard materials, the annular body 10, the pipe 9 and the joint water body 11 are made of hard materials.
Since the contact between hard materials □ is between hard materials, in order to have a good seal between them, □
The tightening method 3 requires a relatively large force and requires high precision machining of the annular body 10 and the groove 9a of the tube 9. However, in this embodiment □', the annular body 10 is separate from the nut 13, so the above-mentioned inconvenience can be avoided.
また、前記環状体１０の突起１０ａおよび管９の溝９ａ
の横断面形状は必ずしも第５図および第６図に示される
ような形状である必要は□なく、例えば、第７図のよう
な２等辺”三角形状や、第８図□−１２−
に示されるにうな蒲鉾状であってもよく、要するにこれ
らの形状は、突起１０ａと１Ｉ９ａとが互いに嵌合され
たとき、環□状体１０に対し管９が少なくとも軸方向か
つ継手本体１１から遠ざかる向きに移動でき□なくなる
形−状であればよい。Further, the protrusion 10a of the annular body 10 and the groove 9a of the tube 9
The cross-sectional shape of □ does not necessarily have to be the shape shown in Figs. In short, these shapes are such that when the protrusions 10a and 1I9a are fitted together, the tube 9 is directed at least axially and away from the joint body 11 with respect to the annular body 10. Any shape is acceptable as long as it cannot be moved to □.
第９図は本発明によする□管継手の他の実施例を示□す
半断面図□、第１０図は該実施例の要部を示す拡大断面
図である。FIG. 9 is a half-sectional view □ showing another embodiment of the □ pipe joint according to the present invention, and FIG. 10 is an enlarged sectional view showing the main parts of this embodiment.
本実施例においては、゛環状体１０には突起が設けられ
ておらず、その□代わりに環状体１０の一端部付近の内
周側に溝１０ｅが周方向に沿って環状に設けられており
、かつこの溝１０８には、ＰＦＡ等の耐触性に優れかつ
比較的に硬い材料から゛な□る環状の抜１す止め材１４
が嵌合されている。また、管９には、前記実施例におけ
る溝９ａに相当する溝は設けられて□いない。そして、
溝１０ｅに抜は止め材１４が嵌合されている状態で環状
体１０を：管９に嵌合し、かつすりト１３を継手本体１
１に螺合して締め付けると；突起１４ａが管９の外一部
に食い込み、環状体１０に対して管９が軸方向に移動不
能になるようになっている。他の構成は前記実施例と同
様である。In this embodiment, the annular body 10 is not provided with a protrusion; instead, a groove 10e is annularly provided along the circumferential direction on the inner circumferential side near one end of the annular body 10. , and this groove 108 is provided with an annular pull-out prevention material 14 made of a relatively hard material with excellent corrosion resistance such as PFA.
are fitted. Further, the tube 9 is not provided with a groove corresponding to the groove 9a in the previous embodiment. and,
With the pull-out stopper 14 fitted in the groove 10e, the annular body 10 is fitted into the pipe 9, and the slot 13 is inserted into the joint body 1.
1 and tightened; the protrusion 14a bites into the outer part of the tube 9, and the tube 9 becomes immovable in the axial direction with respect to the annular body 10. The other configurations are the same as those in the previous embodiment.
本実施例においても、上）本のように突起１４ａにより
、環状体１０に対して管９が軸方向に移動不能になるの
で、前記実施例の場合と同様の効果を得ることができる
。そして、本実施例によれば、管９には溝を加工する必
要がなくなるので、管９の加工コストの増大を避けるこ
とができる。Also in this embodiment, the tube 9 cannot be moved in the axial direction with respect to the annular body 10 due to the protrusion 14a as shown in the upper part, so that the same effect as in the previous embodiment can be obtained. According to this embodiment, there is no need to process grooves in the tube 9, so an increase in the cost of fabricating the tube 9 can be avoided.
また、本実施例では、環状体１０と抜は止め材１４とが
別体とされているので、環状体１０と管９と継手本体１
１との間のシール良好にするために、環状体１０を比較
的に柔かい材料で構成しても、扱は止め材１４ひいては
突起１４ａは比較的に硬い材料で構成し、突起１４ａを
管９の外周部に十分食い込ませ、環状体１０に対して管
９が軸方向に移動不能になるようにすることができる。Further, in this embodiment, since the annular body 10 and the removal stopper 14 are separate bodies, the annular body 10, the pipe 9, and the joint body 14 are separated.
In order to achieve a good seal between the annular body 10 and the tube 9, the stopper 14 and the protrusion 14a are made of a relatively hard material even if the annular body 10 is made of a relatively soft material. The tube 9 can be sufficiently bitten into the outer periphery of the annular body 10 so that the tube 9 cannot be moved in the axial direction with respect to the annular body 10.
第１１図は本発明による管継手のさらに他の実施例を示
す半断面図、第１２図は該実施例の要部を示す拡大断面
図である。これらの図において、１５は接続されるべき
管であり、フッ素樹脂等の１５−
耐触性に優れた材料によって構成されており、その一端
部付近の外周部に、溝１５ａ（第１２図参照）が周方向
に沿って環状に設けられている。FIG. 11 is a half sectional view showing still another embodiment of the pipe joint according to the present invention, and FIG. 12 is an enlarged sectional view showing the main parts of this embodiment. In these figures, 15 is a pipe to be connected, which is made of a material with excellent corrosion resistance such as fluororesin, and has a groove 15a (see Fig. 12) on its outer periphery near one end. ) are provided in an annular shape along the circumferential direction.
１６は継手本体であり、ＰＴＦＥ等の耐蝕性に優れかつ
比較的柔かい材料によって構成されている。この継手本
体１６は、その中心部に流体通路１７を貫通されること
によって中空状とされている。また、この継手本体１６
の一端部側の外周部には雄ねじ部１６ａ、他端部側の外
周部には雄ねじ部１６ｂ１中央部の外周部には六角部１
６ｃがそれぞれ一体的に設けられている。さらに、この
継手本体１６の雄ねじ部１６ｂ側の端部付近の内周面は
、湾曲面１６ｄを形成している。Reference numeral 16 denotes a joint body, which is made of a relatively soft material with excellent corrosion resistance, such as PTFE. The joint body 16 has a hollow shape with a fluid passage 17 passing through its center. In addition, this joint body 16
A male threaded portion 16a is provided on the outer periphery of one end, a male threaded portion 16b is provided on the outer periphery of the other end, and a hexagonal portion 1 is provided on the outer periphery of the central portion.
6c are each provided integrally. Further, the inner peripheral surface of the joint body 16 near the end on the male threaded portion 16b side forms a curved surface 16d.
１８はナツトであり、ＰＦＡまたはＰＰ（ボリプＯピレ
ン）等の耐蝕性に優れた材料によって構成されており、
このナツト１８の内部には、該ナツト１８と一体に環状
体１９が設けられている。18 is a nut, which is made of a material with excellent corrosion resistance such as PFA or PP (Volip-O-Pyrene),
Inside the nut 18, an annular body 19 is provided integrally with the nut 18.
そして、この環状体１９の先端部には、縦断面くさび状
のくさび状部１９ａと、やはり縦断面くさび状の突起１
９ｂとが二股状に分岐して該環状体−１６−
１９に一体に設けられている。なお、くさび状部１９ａ
は環状体１９の外周側、突起１９ｂは内周側に位置して
いる。At the tip of this annular body 19, there is a wedge-shaped part 19a having a wedge-shaped longitudinal section and a protrusion 1 which also has a wedge-shaped longitudinal section.
9b is bifurcated and integrally provided on the annular body-16-19. Note that the wedge-shaped portion 19a
is located on the outer peripheral side of the annular body 19, and the protrusion 19b is located on the inner peripheral side.
本実施例においては、ナツト１８が継手本体１６の雄ね
じ部１６ｂに螺合されて締め付けられると、くさび状部
１９ａが管１５の外周面と継手本体１６の湾曲面１６ｄ
との間に食い込んで環状体１９と管１５との間のシール
および環状体１９と継手本体１６との間のシールが図ら
れると同時に、突起１９ｂが管１５の溝１５ａに係合さ
れて、管１５の軸方向かつ継手本体１６から遠ざかる向
きの移動を阻止するようになる。In this embodiment, when the nut 18 is screwed into the male threaded portion 16b of the joint body 16 and tightened, the wedge-shaped portion 19a is connected to the outer peripheral surface of the pipe 15 and the curved surface 16d of the joint body 16.
At the same time, the protrusion 19b is engaged with the groove 15a of the tube 15, and a seal is achieved between the annular body 19 and the pipe 15 and between the annular body 19 and the joint body 16. Movement of the tube 15 in the axial direction and away from the joint body 16 is prevented.
そして、本実施例においても、くさび状部１９ａは環状
体１９と管１５の外周面との間および環状体１９と継手
本体１６との間をシールする機能のみを果し、また突起
１９ｂは管１５の軸方向の移動を阻止する機能のみを果
すので、くさび状部１９ａ、突起１９ｂ１湾曲面１６ｄ
および溝１５ａの加工精度を高精度とする必要がなく、
環状体１９および継手本体１６の製造コストおよび管１
５に対する溝１５ａの加工コストを安価とすることがで
きるとともに、ナツト１８を手で締め付けるだけで、前
記２つの部分のシールを充分なものにすることができる
。Also in this embodiment, the wedge-shaped portion 19a only functions to seal between the annular body 19 and the outer circumferential surface of the pipe 15 and between the annular body 19 and the joint body 16, and the protrusion 19b functions to 15, the wedge-shaped portion 19a, the protrusion 19b1, the curved surface 16d
And it is not necessary to make the processing precision of the groove 15a high precision,
Manufacturing costs of the annular body 19 and the joint body 16 and the pipe 1
The manufacturing cost of the groove 15a for the groove 15a can be reduced, and the sealing between the two parts can be made sufficient just by tightening the nut 18 by hand.
また、環状体１９と溝１５ａとの係合により、環状体１
９が管１５に対して自ずと適正な位置に確実に位置決め
されるので、管１５に対する環状体１９の位置決めに神
経を使う必要がなく、作業性が非常に良くなる。Furthermore, due to the engagement between the annular body 19 and the groove 15a, the annular body 1
Since the annular body 9 is automatically and reliably positioned at an appropriate position with respect to the tube 15, there is no need to be careful in positioning the annular body 19 with respect to the tube 15, and work efficiency is greatly improved.
（発明の効果）
以上のように本発明による管継手は、環状体と管の外周
面との間のシールおよび環状体と継手本体との間のシー
ルを図る部分と、環状体ひいてはナツトおよび継手本体
に対する管の軸方向の移動を阻止する部分とを、別個に
設けることにより、振動、圧力、熱等の影響によって管
が継手本体から抜ける虞がないとともに、環状体、継手
本体おＪ：び管の加工精度を比較的に高精度とする必要
がなく、コストの低減を図ることでき、しかもナツトを
手で締めるだけで十分なシール性能を得ることができる
という優れた効果を得られるものである。(Effects of the Invention) As described above, the pipe joint according to the present invention has a part for sealing between the annular body and the outer peripheral surface of the pipe and a seal between the annular body and the joint body, and a part for sealing between the annular body and the nut and the joint body. By separately providing a portion that prevents the pipe from moving in the axial direction with respect to the main body, there is no risk that the pipe will come out of the joint body due to the effects of vibration, pressure, heat, etc., and the annular body, joint body, and It does not require relatively high precision pipe machining, reduces costs, and has the excellent effect of being able to obtain sufficient sealing performance just by tightening the nut by hand. be.
第１図は従来の管継手を示す半断面図、第２図は前記従
来の管継手において管が環状体から半ば抜けかけている
状態を示す断面図、第３図は他の従来の管継手を示す半
断面図、第４図は該従来の管継手の一部を示す拡大断面
図、第５図は本発明による管継手の一実施例を示す半断
面図、第６図は該実施例の要部を示す拡大断面図、第７
図および第８図は環状体の突起および管の溝の形状の他
の実施例を示す断面図、第９図は本発明による管継手の
他の実施例を示す半断面図、第１０図は該実施例の要部
を示す拡大断面図、第１１図は本発明による管継手のさ
らに他の実施例を示す半断面図、第１２図は該実施例の
要部を示す拡大断面図である。
９・・・管、９ａ・・・溝、１０・・・環状体、１０ａ
・・・突起、１０ｂ・・・くさび状部、１１・・・継手
本体、１３・・・ナツト、１４・・・抜は止め材、１４
ａ・・・突起、１−１０−
５・・・管、１６・・・継手本体、１８・・・ナツト、
１９・・・環状体、１９ａ・・・くさび状部、１９ｂ・
・・突起。
特許出願人 有限会社 イー・ティー・イー代理人 弁
理士 大 森 泉
第１図
Ｏ
第２図
第３図
２０−
第５図
第６図
多１３７図
第８図
０
第９図
第１０図
３
第１１図
第１２図
手続補正書
昭和５９年１１月λ７日
特許庁長官 志 賀 学 殿
１、事件の表示
昭和５８年特許願第 ２４５０５７ Ｍ２、発明の名称
管継手
３、補正をする者
事件との関係 特許出願人
住 所 東京都新宿区西新宿７丁目１５番１号 拍ビル
内氏 名（名称） 有限会社 イー・ティー・イー６、
補正により増加する発明の数 なし７、補正の対象
明細書の特γＦｉｌｌ求の範囲の欄
８、補正の内容
別紙の通り
（別紙）
２、特許請求の範囲
１〉中空状の継手本体と、この継手本体の外周部に形成
された雄ねじ部と、この雄ねじ部に螺合されるナツトと
、このナツトの内部に収容された環状体と、この環状体
の先端部に形成されたＬ縦断面がくさび状をなすくさび
状部とを有してなり、Ｘ−前記ナツトが締め付けられる
と、該ナツトとともに前記環状体が移動しようと１ノで
、前記くさび状部が前記継手本体の■」と前記管の外周
部との間に食い込む管継手において、前記環状体に、該
環状体に対して少なくとも軸方向かつ前記継手本体から
遠ざかる向きには移動不能なように、前記くさび状部と
は別個の突起を設けるとともに、この突起を前記管の外
周部に、該管が前記環状体に対して少なくとも軸方向か
つ前記継手本体から遠ざかる向きには移動不能となるよ
うに係合することを特徴とする管継手。
２）環状体をナツトと別体とした特許請求の範囲第１項
記載の管継手。 ’、” ’ｊ、。
３）環状体をナツトと一体とした特許請求の範、１４□
、□。 １
４）突起を環状体と一体とし、た特許請求の範囲第２項
または第３項記載の管継、手！
５）環状体の内周側に扱は正め部材を、該環状体に対し
て軸方向かつ継手本体から遠ざかる向きには移動不能に
嵌合し、この抜は止め材の内周部に突起を一体に設けた
特許請求の範囲第２項または第３項記載の管継手。
６）突起を、管の外周部に設けられた溝に嵌合する特許
請求の範・−第２項または第３項記載の管継手。 ・
７）突起を、溝を設けられていない管の外周部に食い□
込ませる特許請求の範囲第２項または第３項記載の管継
手。 ′ □。Fig. 1 is a half-sectional view showing a conventional pipe fitting, Fig. 2 is a sectional view showing a state in which the pipe is about to come out of the annular body in the conventional pipe fitting, and Fig. 3 is another conventional pipe fitting. 4 is an enlarged sectional view showing a part of the conventional pipe joint, FIG. 5 is a half sectional view showing an embodiment of the pipe joint according to the present invention, and FIG. 6 is a half sectional view showing the embodiment. Enlarged sectional view showing the main parts of 7th
8 and 8 are cross-sectional views showing other embodiments of the shapes of the protrusion of the annular body and the grooves of the pipe, FIG. 9 is a half-sectional view showing another embodiment of the pipe joint according to the present invention, and FIG. FIG. 11 is a half sectional view showing still another embodiment of the pipe joint according to the present invention; FIG. 12 is an enlarged sectional view showing the main part of this embodiment. . 9... Pipe, 9a... Groove, 10... Annular body, 10a
...Protrusion, 10b... Wedge-shaped portion, 11... Joint body, 13... Nut, 14... Pull-out prevention material, 14
a...Protrusion, 1-10-5...Pipe, 16...Joint body, 18...Nut,
19... Annular body, 19a... Wedge-shaped part, 19b.
··protrusion. Patent Applicant E.T.E Ltd. Agent Patent Attorney Izumi Omori Fig. 1 O Fig. 2 Fig. 3 Fig. 20- Fig. 5 Fig. 6 137 Fig. 8 Fig. 0 Fig. 9 Fig. 10 Fig. 3 Figure 11 Figure 12 Procedural amendments November 7, 1980 Manabu Shiga, Commissioner of the Patent Office 1, Indication of the case 1982 Patent application No. 245057 M2, Name of the invention Pipe joint 3, Person making the amendment Related Patent Applicant Address: Inside the Su Building, 7-15-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Name: E.T.E. 6, Ltd.
Number of inventions increased by the amendment None 7. Column 8 of the scope of special γFill request in the specification subject to the amendment. Contents of the amendment as per attached sheet (attached sheet) 2. Scope of claim 1〉A hollow joint body and this A male thread formed on the outer periphery of the joint body, a nut screwed into this male thread, an annular body housed inside this nut, and an L vertical section formed at the tip of this annular body. and a wedge-shaped part forming a wedge shape; In a pipe fitting that cuts in between the pipe fitting and the outer periphery of a pipe, a wedge-shaped part separate from the wedge-shaped part is attached to the annular body so as to be immovable at least axially with respect to the annular body and in a direction away from the joint body. A projection is provided, and the projection is engaged with the outer periphery of the tube such that the tube cannot move relative to the annular body at least in the axial direction and in the direction away from the joint body. pipe fittings. 2) The pipe joint according to claim 1, wherein the annular body is separate from the nut. ``,'''j,. 3) Claim in which the annular body is integrated with the nut, 14□
, □. 1 4) A pipe joint according to claim 2 or 3, in which the protrusion is integrated with the annular body! 5) A fitting member is fitted to the inner circumferential side of the annular body so that it cannot move in the axial direction to the annular body and in the direction away from the joint body, and a protrusion is provided on the inner circumferential part of the retaining member. A pipe joint according to claim 2 or 3, which is integrally provided with. 6) The pipe joint according to claim 2 or 3, wherein the protrusion fits into a groove provided on the outer periphery of the pipe.・7) Insert the protrusion into the outer periphery of the pipe that does not have a groove □
The pipe joint according to claim 2 or 3. ′ □.
Claims (1)
された雄ねじ部と、この雄ねじ部に螺合されるナツトと
、このナツトの内部に収容された環状体と、この環状体
の先端部に形成された縦断面がくさび状をなすくさび状
部とを有してなり、前記ナツトが締め付けられると、該
ナツトとともに前記環状体が移動しようとして、前記く
さび状部が前記継手本体と前記管の外周部との間に食い
込む管継手において、前記環状体に、該環状体に対して
少なくとも軸方向かつ前記継手本体から遠ざかる向きに
は移動不能なように、前記くさび状部とは別個の突起を
設けるとともに、この突起を前記管の外周部に、咳管が
前記環状体に対して少な（とも軸方向かつ前記継手本体
から遠ざかる向きには移動不能となるように係合するこ
とを特徴とする管継手。 ２）環状体をナツトと別体とした特許請求の範囲第１項
記載の管継手。 ３）環状体をナツトと一体とした特許請求の範囲第１項
記載の管継手。 ４）突起を環状体と一体とした特許請求の範囲第２項ま
たは第３項記載の管継手。 ５）環状体の内周側に抜は止め部材を、該環状体に対し
て軸方向かつ継手本体から遠ざかる向きには移動不能に
嵌合し、この抜は止め材の内周部に突起を一体に設けた
特許請求の範囲第２項または第３項記載の管継手。 ６）突起を、管の外周部に設けられた溝に嵌合する特許
請求の範囲第２項または第３項記載の管継手。 ７）突起を、溝を設けられていない管の外周部に食い込
ませる特許請求の範囲第２項または第３項記載の管継手
。[Claims] 1) A hollow joint body, a male threaded portion formed on the outer periphery of the joint body, a nut screwed into the male threaded portion, and an annular body housed inside the nut. and a wedge-shaped portion having a wedge-shaped longitudinal section formed at the tip of the annular body, and when the nut is tightened, the annular body tries to move together with the nut, and the wedge-shaped portion is formed at the tip of the annular body. In a pipe joint in which a portion of the pipe wedges between the joint body and the outer circumferential portion of the pipe, the annular body is provided with the annular body so as to be immovable at least in the axial direction with respect to the annular body and in the direction away from the joint body. A projection separate from the wedge-shaped portion is provided, and the projection is placed on the outer periphery of the tube so that the cough tube cannot move relative to the annular body (both in the axial direction and in the direction away from the joint body). 2) The pipe joint according to claim 1, wherein the annular body is separate from the nut. 3) The pipe joint according to claim 1, in which the annular body is integrated with the nut. 4) A pipe joint according to claim 2 or 3, in which the protrusion is integrated with the annular body. 5) Fit a retaining member on the inner circumferential side of the annular body such that it cannot move axially to the annular body and in a direction away from the joint body, and a protrusion is provided on the inner circumferential portion of the retaining member. A pipe joint according to claim 2 or 3, which is integrally provided. 6) The pipe joint according to claim 2 or 3, wherein the protrusion fits into a groove provided on the outer periphery of the pipe. 7) The pipe joint according to claim 2 or 3, wherein the protrusion bites into the outer periphery of a pipe that is not provided with a groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58245057A JPS60139988A (en) | 1983-12-28 | 1983-12-28 | Pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58245057A JPS60139988A (en) | 1983-12-28 | 1983-12-28 | Pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60139988A true JPS60139988A (en) | 1985-07-24 |
| JPH0330038B2 JPH0330038B2 (en) | 1991-04-26 |
Family
ID=17127940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58245057A Granted JPS60139988A (en) | 1983-12-28 | 1983-12-28 | Pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60139988A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007037367A1 (en) * | 2005-09-30 | 2007-04-05 | Daikin Industries, Ltd. | Pipe joint, refrigeration device, heat pump hot water supply device, closing valve, water supply piping, method of connecting piping, and in-the-field piping method |
| US7350828B2 (en) * | 2002-09-18 | 2008-04-01 | Swagelok Company | Tube fitting with sealant |
| JP2011169410A (en) * | 2010-02-18 | 2011-09-01 | Ckd Corp | Port structure and fluid device provided with the port structure |
| JP2016516645A (en) * | 2013-03-18 | 2016-06-09 | アルケマ フランス | Plunger tube connector for containers for packaging products, especially chemical products |
| US10215315B2 (en) | 2008-09-05 | 2019-02-26 | Parker-Hannifin Corporation | Tube compression fitting and flared fitting used with connection body and method of making same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5336713U (en) * | 1976-09-06 | 1978-03-31 | ||
| JPS5710580U (en) * | 1980-06-23 | 1982-01-20 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5336713B2 (en) * | 1974-04-24 | 1978-10-04 | ||
| US4173763A (en) * | 1977-06-09 | 1979-11-06 | International Business Machines Corporation | Heterojunction tunneling base transistor |
-
1983
- 1983-12-28 JP JP58245057A patent/JPS60139988A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5336713U (en) * | 1976-09-06 | 1978-03-31 | ||
| JPS5710580U (en) * | 1980-06-23 | 1982-01-20 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7350828B2 (en) * | 2002-09-18 | 2008-04-01 | Swagelok Company | Tube fitting with sealant |
| WO2007037367A1 (en) * | 2005-09-30 | 2007-04-05 | Daikin Industries, Ltd. | Pipe joint, refrigeration device, heat pump hot water supply device, closing valve, water supply piping, method of connecting piping, and in-the-field piping method |
| US7971909B2 (en) | 2005-09-30 | 2011-07-05 | Daikin Industries, Ltd. | Pipe joint, refrigeration device, heat pump hot water supply device, closing valve, water supply piping, method of connecting piping, and in-the field piping method |
| US10215315B2 (en) | 2008-09-05 | 2019-02-26 | Parker-Hannifin Corporation | Tube compression fitting and flared fitting used with connection body and method of making same |
| JP2011169410A (en) * | 2010-02-18 | 2011-09-01 | Ckd Corp | Port structure and fluid device provided with the port structure |
| JP2016516645A (en) * | 2013-03-18 | 2016-06-09 | アルケマ フランス | Plunger tube connector for containers for packaging products, especially chemical products |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0330038B2 (en) | 1991-04-26 |
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