JP2920331B2 - Pipe fittings - Google Patents
Pipe fittingsInfo
- Publication number
- JP2920331B2 JP2920331B2 JP3312357A JP31235791A JP2920331B2 JP 2920331 B2 JP2920331 B2 JP 2920331B2 JP 3312357 A JP3312357 A JP 3312357A JP 31235791 A JP31235791 A JP 31235791A JP 2920331 B2 JP2920331 B2 JP 2920331B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- joint member
- nut
- gasket
- diameter portion
- 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.)
- Expired - Fee Related
Links
Landscapes
- Joints With Pressure Members (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】この発明は、管継手に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint.
【０００２】[0002]
【従来の技術】管継手として、従来、図２に示すものが
知られている。2. Description of the Related Art Conventionally, a pipe joint shown in FIG. 2 is known.
【０００３】この管継手は、管状継手部材(1) 、２つの
締付けスリーブ（フェルール）(2)(3)およびナット(4)
よりなる。This pipe joint comprises a tubular joint member (1), two tightening sleeves (ferrules) (2) (3) and a nut (4).
Consisting of
【０００４】継手部材(1) の中間部外周に外向きフラン
ジ(1a)が形成され、その左右両端側の外周におねじ(5)
(6)がそれぞれ形成されている。継手部材(1) の右端部
側の内周に左側の部分より少し内径の大きい大径部(1b)
が形成され、その右端部内周に右内向きに傾斜したテー
パ面(1c)が形成されている。An outward flange (1a) is formed on the outer periphery of an intermediate portion of the joint member (1), and screws (5)
(6) are formed respectively. Large diameter part (1b) with a slightly larger inner diameter than the left part on the inner periphery on the right end side of the joint member (1)
Is formed, and a tapered surface (1c) inclined rightward inward is formed on the inner periphery of the right end.
【０００５】継手部材(1) の大径部(1b)の内側に、管
(7)が右側から挿入され、継手部材(1) より右側に突出
した管(7) の周囲に第１締付けスリーブ(2) と第２締付
けスリーブ(3)が左から順にはめられている。[0005] Inside the large diameter portion (1b) of the joint member (1), a pipe is provided.
(7) is inserted from the right side, and a first tightening sleeve (2) and a second tightening sleeve (3) are fitted in order from the left around a pipe (7) projecting rightward from the joint member (1).
【０００６】第１スリーブ(2) の外周面(2a)はわずかに
左向きに傾斜したテーパ面となっており、右端部内周に
右内向きに傾斜したテーパ面(2b)が形成されている。そ
して、第１スリーブ(2) の左側の部分が継手部材(1) の
テーパ面(1c)の内側に入り込んで、外周面(2a)がテーパ
面(1c)に接している。The outer peripheral surface (2a) of the first sleeve (2) is a tapered surface slightly inclined leftward, and a taper surface (2b) inclined rightward inward is formed on the inner periphery of the right end. The left portion of the first sleeve (2) enters the inside of the tapered surface (1c) of the joint member (1), and the outer peripheral surface (2a) is in contact with the tapered surface (1c).
【０００７】第２スリーブ(3) の左端部外周に、左外向
きに傾斜したテーパ面(3a)が形成されている。第２スリ
ーブ(3) の右端部外周に外向きフランジ(3b)が形成さ
れ、その右端部外周にわずかに外向きに傾斜したテーパ
面(3c)が形成されている。そして、第２スリーブ(3) の
左端テーパ面(3a)が第１スリーブ(2) の右端テーパ面(2
b)に接している。[0007] A tapered surface (3a) inclined leftward is formed on the outer periphery of the left end of the second sleeve (3). An outward flange (3b) is formed on the outer periphery of the right end of the second sleeve (3), and a taper surface (3c) inclined slightly outward is formed on the outer periphery of the right end. The left end tapered surface (3a) of the second sleeve (3) is connected to the right end tapered surface (2a) of the first sleeve (2).
touches b).
【０００８】ナット(4) の右端部内周に内向きフランジ
(4a)が形成されており、このフランジ(4a)の部分が第２
スリーブ(3) のすぐ右側の管(7) の周囲にはめられ、こ
れより左側のナット(4) の内側に第２スリーブ(3) 、第
１スリーブ(2) および継手部材(1) の右端側の部分が挿
通されている。[0008] An inward flange is formed on the inner periphery of the right end of the nut (4).
(4a) is formed, and this flange (4a) is
It fits around the tube (7) just to the right of the sleeve (3), and inside the nut (4) on the left-hand side, the second sleeve (3), the first sleeve (2) and the right end of the coupling member (1). Side part is inserted.
【０００９】ナット(4) のフランジ(4a)の左側の面はわ
ずかに内向きに傾斜しており、この面が第２スリーブ
(3) の右端テーパ面(3c)に接している。The left side surface of the flange (4a) of the nut (4) is slightly inclined inward, and this surface is
(3) is in contact with the right end tapered surface (3c).
【００１０】ナット(4) の左端部側の内周にめねじ(8)
が形成されており、これが継手部材(1) の右側のおねじ
(6) にねじはめられている。A female screw (8) is provided on the inner periphery on the left end side of the nut (4).
Is formed on the right side of the joint member (1).
(6) is screwed.
【００１１】ナット(4) を締付けることにより、２つの
スリーブ(2)(3)が継手部材(1) とナット(4) のフランジ
(4a)との間に挟み止められ、これにより、２つのスリー
ブ(2)(3)が締付けられて、管(7) が継手部材(1) に固定
されている。By tightening the nut (4), the two sleeves (2) and (3) are connected to the joint member (1) and the flange of the nut (4).
(4a), whereby the two sleeves (2) and (3) are tightened, and the pipe (7) is fixed to the joint member (1).
【００１２】[0012]
【発明が解決しようとする課題】上記の管継手では、第
１締付けスリーブ(2) が管(7) の外周面と継手部材(1)
のテーパ面(1c)に圧接させられて、この部分で管(7) と
継手部材(1) の間のシールがなされている。このため、
管(7) 内に液体を流す場合、管(7) の第１スリーブ(2)
より先端側の部分と継手部材(1) の大径部(1b)との間の
狭い隙間に液体や異物が入り込み、この隙間に残留す
る。In the above-mentioned pipe joint, the first tightening sleeve (2) is provided between the outer peripheral surface of the pipe (7) and the joint member (1).
Is pressed against the tapered surface (1c), and a seal is formed between the pipe (7) and the coupling member (1) at this portion. For this reason,
When the liquid flows through the pipe (7), the first sleeve (2) of the pipe (7)
Liquid or foreign matter enters a narrow gap between the more distal end portion and the large-diameter portion (1b) of the joint member (1), and remains in this gap.
【００１３】ところで、一般の配管においては、管内お
よび管継手内の残留液体を取除くために、管内に不活性
ガスを吹込んで清浄作業が行なわれるが、このようにし
ても、上記隙間に残留した液体を取除くことができず、
このため、管内を流れる液体と上記隙間に残留する液体
とが混ざって管内を流れる液体の純度が低下したり、反
応性の非常に強い液体を流す場合は、管内を流れる液体
と上記隙間に残留する液体とが反応して反応生成物が生
じたりすることがあり、とくに高清浄度が必要となる配
管には適さないという問題があった。By the way, in a general pipe, an inert gas is blown into the pipe to perform a cleaning operation in order to remove a liquid remaining in the pipe and the pipe joint. Liquid cannot be removed,
For this reason, when the liquid flowing in the pipe and the liquid remaining in the gap are mixed to lower the purity of the liquid flowing in the pipe, or when a very reactive liquid flows, the liquid flowing in the pipe and the liquid remaining in the gap remain. There is a problem that a reaction product may be generated by reacting with a liquid to be produced, which is not particularly suitable for piping requiring high cleanliness.
【００１４】この発明の目的は、上記の問題を解決し、
液体や異物の残留を防止できる管継手を提供することに
ある。An object of the present invention is to solve the above problems,
It is an object of the present invention to provide a pipe joint that can prevent liquid and foreign matter from remaining.
【００１５】[0015]
【課題を解決するための手段】この発明による管継手
は、一端側に形成されている大径部に管が挿入された管
状継手部材、この管状継手部材の一端側から突出した管
の周囲にはめられた締付けスリーブ、およびこの締付け
スリーブを締付けて管を管状継手部材に固定する袋状の
ナットを備えている管継手において、管状継手部材の大
径部に挿入された管の端面とこれに対向する管状継手部
材の肩部との間に円環状ガスケットが挟み止められてお
り、継手部材の大径部と肩部との間の部分に、内径が大
径部より小さくかつ幅がガスケット幅より小さい締過ぎ
防止用環状突部が形成されており、ナットを強く締付け
ると、管の端面が継手部材の環状突部に当たり、それ以
上ナットを締付けることができないようになされている
ことを特徴とするものである。SUMMARY OF THE INVENTION A pipe joint according to the present invention includes a tubular joint member having a pipe inserted into a large diameter portion formed at one end thereof, and a pipe projecting from one end of the tubular joint member. An end face of a pipe inserted into a large-diameter portion of a tubular joint member is provided in a pipe joint including a fitted tightening sleeve and a bag-shaped nut for tightening the tightening sleeve to fix the tube to the tubular joint member. An annular gasket is sandwiched between the shoulder portion of the opposed tubular joint member and a portion between the large diameter portion and the shoulder portion of the joint member has an inner diameter smaller than the large diameter portion and a width smaller than the gasket width. An annular protrusion to prevent overtightening is formed, and the nut is tightly tightened.
Then, the end face of the pipe hits the annular projection of the joint member,
It is characterized in that the upper nut cannot be tightened .
【００１６】[0016]
【作用】管状継手部材に挿入された管の端面とこれに対
向する管状継手部材の肩部との間にガスケットが挟み止
められているので、これより外側の管と管状継手部材と
の間の狭い隙間に液体や異物が入り込むことがなく、し
たがって、この隙間に液体や異物が残留することがな
い。また、継手部材の大径部と肩部との間の部分に、大
径部より少し内径が小さくかつ幅がガスケット幅より小
さい締過ぎ防止用環状突部が形成されており、ナットを
強く締付けると、管の端面が継手部材の環状突部に当た
り、それ以上ナットを締付けることができないようにな
されているので、ナットの締過ぎによるガスケットの破
損が防止される。The gasket is clamped between the end face of the tube inserted into the tubular joint member and the shoulder of the tubular joint member facing the end of the tube. No liquid or foreign matter enters the narrow gap, and therefore no liquid or foreign matter remains in this gap. Further, a portion between the large diameter portion and the shoulder portion of the joint member, and a little inside diameter is smaller and the width than the large-diameter portion is smaller tightening preventing annular projection from the gasket width is formed, a nut
When tightened strongly, the end face of the pipe hits the annular projection of the joint member.
The nut can no longer be tightened.
Because it is, damage to the gasket by tightening of nuts can be prevented.
【００１７】[0017]
【実施例】以下、図１を参照して、この発明の実施例に
ついて説明する。An embodiment of the present invention will be described below with reference to FIG.
【００１８】図１は管継手の要部を拡大して示してお
り、図２の従来例と同じ部分には同一の符号を付してい
る。FIG. 1 shows an enlarged view of a main part of the pipe joint, and the same parts as those in the conventional example of FIG. 2 are denoted by the same reference numerals.
【００１９】図１において、継手部材(1) の大径部(1b)
に挿入された管(7) の左端面とこれに対向する継手部材
(1) の右向きの肩部(1d)との間に間隔があけられてお
り、これらの間に円環状ガスケット(9) が挟み止められ
て、この部分で管(7) と継手部材(1) との間のシールが
なされている。管(7) と継手部材(1) の内径はほぼ等し
く、ガスケット(9) の内径はこれらの内径とほぼ等しい
かこれより少し小さい。ガスケット(9) は、この例では
リング状コイルばねが断面Ｃ形の金属リングで被覆され
たものが使用されているが、もちろんこれに限られな
い。継手部材(1) の大径部(1b)の左端部と肩部(1d)との
間の部分に、大径部(1b)より少し内径の小さくなった締
過ぎ防止用の環状突部(1e)が形成されている。この突部
(1e)の左右方向の幅は、ガスケット(9) の左右方向の幅
（直径）より少し小さい。In FIG. 1, the large diameter portion (1b) of the joint member (1)
End face of the pipe (7) inserted in
There is a gap between the right-handed shoulder (1d) of (1), and an annular gasket (9) is clamped between them, at which point the pipe (7) and the joint member (1) are joined. ). The inside diameters of the pipe (7) and the coupling member (1) are substantially equal, and the inside diameter of the gasket (9) is substantially equal to or slightly smaller than these inside diameters. The gasket 9 used in this example is a ring-shaped coil spring covered with a metal ring having a C-shaped cross section, but is not limited to this. At the portion between the left end of the large-diameter portion (1b) and the shoulder (1d) of the joint member (1), an annular protrusion (a little smaller in inner diameter than the large-diameter portion (1b)) for preventing overtightening ( 1e) is formed. This protrusion
The width in the left-right direction of (1e) is slightly smaller than the width (diameter) in the left-right direction of the gasket (9).
【００２０】他は、図２の従来例の場合と同様である。The other points are the same as those of the conventional example shown in FIG.
【００２１】上記の管継手では、管(7) の端面と継手部
材(1) の肩部(1d)との間にガスケット(9) が挟み止めら
れ、このガスケット(9) の内径が管(7) および継手部材
(1)の内径とほぼ等しいかこれより少し小さいので、管
(7) と継手部材(1) との間に液体や異物が入り込んで残
留するような凹所が形成されない。また、このガスケッ
ト(9) の部分で管(7) と継手部材(1) の間のシールがな
されるので、これより外側の管(7) の外周面と管状継手
部材(1) の大径部(1b)の内周面との間の狭い隙間に液体
や異物が入り込んで残留することがない。また、ナット
(4) を強く締付けても、管(7) の左端面が継手部材(1)
の環状突部(1e)に当たり、それ以上ナット(4) を締付け
ることができなくなる。そして、これにより、ナット
(4) の締過ぎによるガスケット(9) の破損が防止され
る。In the above-mentioned pipe joint, a gasket (9) is sandwiched between the end face of the pipe (7) and the shoulder (1d) of the joint member (1), and the inner diameter of the gasket (9) is 7) and joint members
Since it is almost equal to or slightly smaller than the inner diameter of (1),
No recess is formed between the (7) and the joint member (1) in which liquid or foreign matter enters and remains. Since the gasket (9) seals between the pipe (7) and the joint member (1), the outer peripheral surface of the outer pipe (7) and the large diameter of the tubular joint member (1) are formed. Liquids and foreign substances do not enter the narrow gap between the inner peripheral surface of the portion (1b) and remain. Also nut
Even if (4) is strongly tightened, the left end face of the pipe (7) is
And the nut (4) cannot be further tightened. And this allows the nut
The gasket (9) is prevented from being damaged due to excessive tightening of (4).
【００２２】上記実施例では、締付けスリーブが２個使
用されているが、締付けスリーブは１個でもよい。In the above embodiment, two tightening sleeves are used, but one tightening sleeve may be used.
【００２３】[0023]
【発明の効果】この発明の管継手によれば、上述のよう
に、管状継手部材に挿入された管の端面とこれに対向す
る管状継手部材の肩部との間に挟み止められたガスケッ
トにより、これより外側の管と管状継手部材との間の狭
い隙間に液体や異物が入り込んで残留することが防止さ
れる。したがって、管内を流れる液体と管継手内に残留
する液体とが混ざって純度が低下したり、これらが反応
して反応生成物が生じたりすることがなく、高清浄度が
必要な配管にも使用できる。しかも、ナットの締過ぎに
よるガスケットの破損が防止されるので、その信頼性が
確保される。 According to the pipe joint of the present invention, as described above, the gasket clamped between the end face of the pipe inserted into the tubular joint member and the shoulder of the tubular joint member facing the end face. This prevents liquid and foreign matter from entering and remaining in the narrow gap between the outer pipe and the tubular joint member. Therefore, the liquid flowing in the pipe and the liquid remaining in the pipe joint are not mixed to reduce the purity, and they do not react to produce a reaction product. it can. Moreover, the nut is too tight
Gasket damage due to
Secured.
【図１】この発明の実施例を示す管継手の要部縦断面図
である。FIG. 1 is a longitudinal sectional view of a main part of a pipe joint according to an embodiment of the present invention.
【図２】従来例を示す管継手の縦断面図である。FIG. 2 is a longitudinal sectional view of a pipe joint showing a conventional example.
(1) 管状継手部材 (1b) 大径部 (1d) 肩部 (2)(3) 締付けスリーブ (4) ナット (7) 管 (9) ガスケット (1) Tubular joint member (1b) Large diameter part (1d) Shoulder part (2) (3) Tightening sleeve (4) Nut (7) Pipe (9) Gasket
Claims (1)
された管状継手部材、この管状継手部材の一端側から突
出した管の周囲にはめられた締付けスリーブ、およびこ
の締付けスリーブを締付けて管を管状継手部材に固定す
る袋状のナットを備えている管継手において、 管状継手部材の大径部に挿入された管の端面とこれに対
向する管状継手部材の肩部との間に円環状ガスケットが
挟み止められており、継手部材の大径部と肩部との間の
部分に、内径が大径部より小さくかつ幅がガスケット幅
より小さい締過ぎ防止用環状突部が形成されており、ナ
ットを強く締付けると、管の端面が継手部材の環状突部
に当たり、それ以上ナットを締付けることができないよ
うになされていることを特徴とする管継手。1. A tubular joint member having a tube inserted into a large-diameter portion formed on one end side, a clamping sleeve fitted around a tube protruding from one end side of the tubular joint member, and a clamping sleeve. In a pipe joint provided with a bag-shaped nut for tightening and fixing a pipe to a tubular joint member, a pipe-shaped joint between an end face of a pipe inserted into a large-diameter portion of the tubular joint member and a shoulder portion of the tubular joint member opposed thereto. An annular gasket is pinched and stopped, and a portion between the large diameter portion and the shoulder portion of the joint member is formed with an annular protrusion for preventing overtightening whose inner diameter is smaller than the large diameter portion and whose width is smaller than the gasket width. Have been
When the pipe is strongly tightened, the end face of the pipe will
And the nut can no longer be tightened
A pipe joint characterized by being made .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3312357A JP2920331B2 (en) | 1991-11-27 | 1991-11-27 | Pipe fittings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3312357A JP2920331B2 (en) | 1991-11-27 | 1991-11-27 | Pipe fittings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05149488A JPH05149488A (en) | 1993-06-15 |
| JP2920331B2 true JP2920331B2 (en) | 1999-07-19 |
Family
ID=18028276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3312357A Expired - Fee Related JP2920331B2 (en) | 1991-11-27 | 1991-11-27 | Pipe fittings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2920331B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017073596A1 (en) * | 2015-10-30 | 2017-05-04 | 株式会社フジキン | Piping connection structure, piping connection tool, and piping connection method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040017760A (en) * | 2002-08-23 | 2004-02-27 | 황길연 | Connector for Pipes |
| JP2007285343A (en) * | 2006-04-13 | 2007-11-01 | Ihara Science Corp | Joint structure |
| KR101292919B1 (en) * | 2005-11-29 | 2013-08-02 | 이하라 사이언스 가부시키가이샤 | Coupling structure |
| CN104806826A (en) * | 2015-04-16 | 2015-07-29 | 广东立丰管道科技有限公司 | Clamp ring two-side-locked thin-walled metal pipe intertubular connecting component |
-
1991
- 1991-11-27 JP JP3312357A patent/JP2920331B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017073596A1 (en) * | 2015-10-30 | 2017-05-04 | 株式会社フジキン | Piping connection structure, piping connection tool, and piping connection method |
| CN108351062A (en) * | 2015-10-30 | 2018-07-31 | 株式会社富士金 | The connection method of distribution tube connection structure, piping fastening means and piping |
| JPWO2017073596A1 (en) * | 2015-10-30 | 2018-12-06 | 株式会社フジキン | Piping connection structure, piping connector and piping connection method |
| CN108351062B (en) * | 2015-10-30 | 2019-10-11 | 株式会社富士金 | The connection method of distribution tube connection structure, piping fastening means and piping |
| US11022242B2 (en) | 2015-10-30 | 2021-06-01 | Fujikin Incorporated | Pipe connection structure, pipe connection unit, and connection method of pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05149488A (en) | 1993-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3990204B2 (en) | Reusable coupling attached to the end of a flexible reinforced pipe | |
| JP3388291B2 (en) | Pipe fittings | |
| DE69224029T2 (en) | Connection for tight connection of smooth pipes to screw connection parts | |
| JP2920331B2 (en) | Pipe fittings | |
| JPH09269089A (en) | Improved coupler | |
| US6363973B1 (en) | Device for closing a pipe at its end side | |
| JP2000240874A (en) | Pipe joint for soft pipe | |
| JP2961288B2 (en) | Pipe fittings | |
| JP3328415B2 (en) | Screw-in type pipe fitting | |
| JPH0639191Y2 (en) | Union fittings for glass tubes | |
| JPH0579584A (en) | Pipe joint | |
| JPH1164048A (en) | Attaching structure for fluid-measuring sensor | |
| JPH0750628Y2 (en) | Pipe fitting | |
| JP2984803B2 (en) | Pipe fittings | |
| KR970028028A (en) | Tube joint | |
| JPH068885U (en) | Pipe fitting | |
| JP3475040B2 (en) | Pipe fittings | |
| JPH07190271A (en) | Resin pipe joint and connection method for pipe material | |
| JP2552697Y2 (en) | Pipe fittings | |
| JP3523112B2 (en) | Resin pipe connection joint for fluid equipment with quartz housing | |
| JP2604427Y2 (en) | Pipe fittings | |
| JP2864183B2 (en) | Joint | |
| JPH07127775A (en) | Pipe connecting device | |
| JP2547236B2 (en) | Pipe fitting | |
| JP2552703Y2 (en) | Pipe fittings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19981006 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990302 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |