JP2002327884A - Connection metal fitting for pipes - Google Patents

Connection metal fitting for pipes

Info

Publication number
JP2002327884A
JP2002327884A JP2001134577A JP2001134577A JP2002327884A JP 2002327884 A JP2002327884 A JP 2002327884A JP 2001134577 A JP2001134577 A JP 2001134577A JP 2001134577 A JP2001134577 A JP 2001134577A JP 2002327884 A JP2002327884 A JP 2002327884A
Authority
JP
Japan
Prior art keywords
fitting
seal member
sealing
seal
face
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
Application number
JP2001134577A
Other languages
Japanese (ja)
Other versions
JP4602590B2 (en
Inventor
Akira Horimoto
章 堀本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sakura Rubber Co Ltd
Original Assignee
Sakura Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sakura Rubber Co Ltd filed Critical Sakura Rubber Co Ltd
Priority to JP2001134577A priority Critical patent/JP4602590B2/en
Publication of JP2002327884A publication Critical patent/JP2002327884A/en
Application granted granted Critical
Publication of JP4602590B2 publication Critical patent/JP4602590B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a connection metal fitting for pipes capable of expanding an application range by a constitution without staying fluid after connection metal fitting main bodies can be connected, attached and detached each other in a single operation and a sealing property is secured in the connection state. SOLUTION: A fitting projecting part 5 and a fitting recessed part 6 are formed on the connection metal fitting main body 1. A sealing member 4 made of an elastic material is mounted on a front end face. On end face and an outside diameter surface of the sealing member 4 are fitted into a bottom surface and a peripheral surface of a recessed part 5 for mounting provided on the front end face of the connection metal fitting main body 1 and the other end face is projected from the front end face of the connection metal fitting main body 1. The projecting end face is inclined and formed so that projecting amount may be larger on the inside diameter side as compared with the outside diameter side. The one end face of the sealing member 4 and the bottom surface of the recessed part 5 for mounting are inclined and formed each other so that the projecting amount may be smaller on the inside diameter side as compared with the outside diameter side.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、雌雄の区別のない
一対の同一構造の結合金具本体から構成される配管類の
結合金具であって、特に、結合金具本体に取付けられ、
結合金具本体相互をシールするシール構造の改良に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fitting for pipes composed of a pair of fittings having the same structure without distinction between males and females.
The present invention relates to an improvement in a seal structure for sealing between coupling metal bodies.

【0002】[0002]

【従来の技術】ホース、たとえば消防ホースの結合金具
として差し込み型のものが知られているが、これは結合
される一対の結合金具本体に雌雄の区別があって、雄金
具相互、または雌金具相互の結合ができない。
2. Description of the Related Art A plug-in type hose is known as a fitting for a fire hose, for example, in which a pair of connecting fittings to be joined has a distinction between male and female, and male fittings or female fittings. No mutual connection.

【0003】特に、消火作業のように迅速性と確実性が
求められるところに用いられるものとしては、取扱い上
の不便さがあり、また、構造の相違する雄金具と雌金具
の2種類の金具を製造しなければならず、製造コストが
高くなっている。
[0003] In particular, there are two types of metal fittings, male and female, which are inconvenient in handling and are used in places where quickness and certainty are required, such as fire extinguishing work. Must be manufactured, and the manufacturing cost is high.

【0004】このような不具合を解消するため、雌雄の
区別のない同一の形状の一対の結合金具本体からなるホ
ースの結合金具が開発された。たとえば、本出願人にお
いて出願した特願平7−275835号があり、すでに
特許登録(特許第3107507号)に至っている。
[0004] In order to solve such a problem, a hose connecting fitting having a pair of connecting fitting bodies of the same shape without gender difference has been developed. For example, there is Japanese Patent Application No. 7-275835 filed by the present applicant, which has already been registered as a patent (Japanese Patent No. 3107507).

【0005】近時、このホースの結合金具を、たとえば
食品プラント関係(いわゆる、サニタリーと呼ばれる)
を構成する配管類の結合や、医薬品あるいは化粧品など
の製造ラインを構成する配管類の結合に転用することの
要望が大である。
[0005] Recently, a hose fitting has been used, for example, in connection with a food plant (so-called sanitary).
There is a great demand for diversion to the connection of the pipes that make up the product and the connection of the pipes that make up the production line for pharmaceuticals or cosmetics.

【0006】すなわち、結合金具本体相互の結合と離脱
がワンタッチで行えて、作業性の大幅な改善が得られる
こと、および必要に応じて分解(分離)が簡単に行える
ことなどの利点がある。
[0006] That is, there is an advantage that the connection and disconnection of the connection metal fittings can be performed with one touch, so that a great improvement in workability can be obtained, and that disassembly (separation) can be easily performed if necessary.

【0007】[0007]

【発明が解決しようとする課題】ここで問題は、配管内
に導かれる流体が、結合金具本体内においても常に円滑
に流れることである。すなわち、流体として完全に新鮮
であることが求められ、少しでも溜まる部位が存在して
はならない。
The problem here is that the fluid introduced into the pipe always flows smoothly in the fitting body. That is, the fluid must be completely fresh, and there must not be any part that accumulates even a little.

【0008】図10(A)に示す特願平7−27583
5号においては、円筒状のシール面部材aの前端面に取
付けられるシール部材bが、結合金具本体S相互の結合
時に、互いに密接状態となってシールすることの他に、
シール部材bとシール面部材a端面と間に凹部空間dが
形成されてしまう。
[0008] Japanese Patent Application No. 7-27584 shown in FIG.
In No. 5, in addition to the sealing member b attached to the front end face of the cylindrical sealing surface member a being in a state of being in close contact with each other when the coupling metal members S are connected to each other, the sealing member b is sealed.
A concave space d is formed between the seal member b and the end face of the seal face member a.

【0009】当然、配管内を導かれる流体には流体圧が
あって円滑に流通しているのだけれども、一旦、上記凹
部空間dに入り込んだ流体はここから出難い。すなわ
ち、凹部空間dが流体の溜まり部となってしまう。
Naturally, the fluid guided in the pipe has a fluid pressure and flows smoothly, but the fluid once entering the recessed space d is difficult to exit therefrom. That is, the concave space d becomes a reservoir for the fluid.

【0010】図10(B)は、シール部材b1がシール
面部材a1から軸方向に抜け出ないように改良されたも
のであるが、ここでは図示しない結合金具本体相互の結
合時に、互いのシール部材b1の基端に凹部空間dが存
在することに変わりがなく、ここが流体の溜まり部とな
ってしまう。
FIG. 10 (B) shows a modification in which the sealing member b1 is prevented from slipping out of the sealing surface member a1 in the axial direction. The presence of the concave space d at the base end of b1 remains unchanged, and this becomes a pool of fluid.

【0011】図10(C)に示す実用新案登録第306
4938号は、送水ホースの接手筒S1相互を接合した
ときに、相互の接合面を圧着シールするシールパッキン
b2の形態が特徴であるが、やはりシールパッキンb2
と接手筒S1との間に凹部空間dが形成されていて、流
体が容易に浸入して溜まり部になる。
The utility model registration No. 306 shown in FIG.
No. 4938 is characterized by a form of a seal packing b2 which presses and seals a joint surface between joint pipes S1 of a water supply hose when they are joined together.
A concave space d is formed between the joint tube S1 and the joint tube S1, and the fluid easily penetrates into a reservoir portion.

【0012】すなわち、いずれのシールパッキンb,b
1,b2であっても、いわゆる舌片状に形成されて取付
け部から突出しているので、互いに密接するシール状態
では、非密接側と取付け部との間に凹部空間が生じるこ
とが避けられない。
That is, any of the seal packings b, b
Even in the case of 1, b2, since it is formed in a so-called tongue-like shape and protrudes from the mounting portion, it is inevitable that a concave space is formed between the non-close side and the mounting portion in a sealed state in which they are in close contact with each other. .

【0013】そのため、ワンタッチで結合着脱できる結
合金具であって、結合着脱作業性に優れ、かつ結合金具
本体相互に対するシール性を確保しているのであるが、
流体の溜まり部が生じることにより、適用範囲が規制さ
れるという不具合がある。
[0013] For this reason, it is a connection fitting which can be connected and detached with one touch, and is excellent in connection and detachment workability and secures the sealing property between the connection fitting main bodies.
There is a problem that the application range is regulated by the generation of the fluid reservoir.

【0014】本発明は上記事情に着目してなされたもの
であり、その目的とするところは、結合金具本体相互を
ワンタッチで結合着脱でき、かつ結合状態でシール性を
確保したうえで、流体が溜まることの全くない構成で、
常に新鮮な流体が得られ、適用範囲の拡大が得られる配
管類の結合金具を提供しようとするものである。
The present invention has been made in view of the above circumstances, and it is an object of the present invention to make it possible to connect and remove the connecting metal fittings with one touch with one touch, and to secure the sealing property in the connected state, and to prevent the fluid from flowing. With a configuration that does not collect at all,
It is an object of the present invention to provide a fitting for piping that can always obtain fresh fluid and expand the range of application.

【0015】[0015]

【課題を解決するための手段】上記目的を満足するため
本発明の配管類の結合金具は、請求項1として、一対の
結合金具本体が配管端部もしくは配管要素に一体に接続
され、各結合金具本体の周端部に沿い所定間隔を存して
軸方向に突出する複数の嵌合突部が設けられて、これら
嵌合突部相互間に嵌合凹部が形成され、嵌合突部の一方
の側面に周方向に突出する係止鉤部が設けられ、他方の
側面に周方向に弾性力を付勢する付勢機構が設けられ、
結合金具本体の前端面に弾性材料からなるシール部材が
取付けられ、結合金具本体相互における係止鉤部相互の
係合と付勢機構の弾性付勢力をもって結合金具本体相互
を着脱自在に結合し、この結合によりシール部材相互が
当接してシールを維持する配管類の結合金具において、
シール部材は、結合金具本体の前端面に設けられる取付
用凹部に取付けられ、所定の内径と外径とを有するリン
グ状をなし、その一端面と外径面が取付用凹部の底面と
周面に嵌め込まれ、他端面が結合金具本体前端面から突
出して他方の結合金具本体に取付けられるシール部材に
密接シールをなし、突出端面は、その突出量が外径側よ
りも内径側が大になるよう傾斜形成され、シール部材の
一端面と結合金具本体の取付用凹部底面は互いに、その
突出量が外径側よりも内径側が小になるよう傾斜形成さ
れることを特徴とする。
According to a first aspect of the present invention, there is provided a pipe fitting of the present invention, in which a pair of connecting metal bodies are integrally connected to a pipe end or a pipe element. A plurality of fitting protrusions protruding in the axial direction at predetermined intervals along the peripheral end of the metal fitting body are provided, a fitting recess is formed between these fitting protrusions, and a fitting recess is formed. A locking hook that protrudes in the circumferential direction is provided on one side surface, and a biasing mechanism that biases the elastic force in the circumferential direction is provided on the other side surface,
A seal member made of an elastic material is attached to the front end surface of the coupling body, and the coupling bodies are detachably coupled with each other by the engagement of the locking hooks between the coupling bodies and the elastic urging force of the urging mechanism. In this connection fitting for pipes, the seal members contact each other to maintain the seal by this connection,
The seal member is attached to a mounting recess provided on the front end surface of the coupling body, and has a ring shape having a predetermined inner diameter and an outer diameter. One end surface and the outer diameter surface are the bottom surface and the peripheral surface of the mounting recess. And the other end surface protrudes from the front end face of the fitting body to form a tight seal with a seal member attached to the other fitting body, and the protruding end face is such that the amount of protrusion is larger on the inner diameter side than on the outer diameter side. The one end surface of the seal member and the bottom surface of the mounting recess of the fitting body are formed so as to be inclined so that the protrusion amount is smaller on the inner diameter side than on the outer diameter side.

【0016】なお、シール部材の材質としては、ゴムな
どの弾性材料に限定されるものではなく、弾性変形する
ものであればテフロン(登録商標)、あるいはメタル等
であっても支障がない。
The material of the seal member is not limited to an elastic material such as rubber, and any material that can be elastically deformed, such as Teflon (registered trademark) or metal, does not cause any problem.

【0017】請求項2として、請求項1記載の配管類の
結合金具においてシール部材の外径面および、このシー
ル部材外径面と係合する取付用凹部周面に、シール部材
の取付用凹部から軸方向への抜けを防止する係止突起お
よび係止凹部が設けられることを特徴とする。
According to a second aspect of the present invention, in the pipe fitting of the first aspect, the outer peripheral surface of the seal member and the outer peripheral surface of the mounting recess engaging with the outer peripheral surface of the seal member are provided with the mounting concave portion of the seal member. A locking projection and a locking recess for preventing the shaft from coming off in the axial direction are provided.

【0018】請求項3として、請求項1記載の配管類の
結合金具においてシール部材に、配管内部が負圧状態に
なったとき互いに密接してシールする負圧シール部が一
体に設けられることを特徴とする。
According to a third aspect of the present invention, in the fitting for connecting pipes according to the first aspect, the seal member is provided integrally with a negative pressure seal portion that seals tightly with each other when the inside of the pipe is in a negative pressure state. Features.

【0019】請求項4として、請求項1記載の配管類の
結合金具において取付用凹部底面およびシール部材一端
面に、配管内部が負圧状態になったときシール部材の内
径方向への移動を規制する移動規制用突部および移動規
制用凹部が設けられることを特徴とする。
According to a fourth aspect of the present invention, in the fitting for pipes according to the first aspect, the bottom of the mounting recess and the one end face of the seal member are restricted from moving in the radial direction of the seal member when the inside of the pipe is in a negative pressure state. A movement restricting projection and a movement restricting recess.

【0020】上述の課題を解決する手段を採用すること
により、請求項1の発明によれば、結合金具本体相互を
ワンタッチ結合した状態でシール性を確保するととも
に、流体の溜まることのない構成で、流体を常に新鮮な
状態で流通させる。
According to the first aspect of the present invention, by adopting the means for solving the above-mentioned problem, the sealing members are secured in a one-touch connection state with each other, and the structure is such that fluid does not accumulate. The fluid is always circulated in a fresh state.

【0021】請求項2の発明によれば、ワンタッチ結合
金具本体相互を結合した状態でシール性を確保し、流体
の溜まることのない構成で、さらに、シール部材の取付
け用凹部からの軸方向への抜けを確実に防止する。
According to the second aspect of the present invention, the sealability is ensured in a state where the one-touch coupling metal fittings are connected to each other, so that the fluid does not accumulate, and further, in the axial direction from the mounting concave portion of the seal member. To prevent slipping out.

【0022】請求項3の発明によれば、結合金具本体相
互をワンタッチ結合した状態でシール性を確保し、流体
の溜まることのない構成で、さらに、配管内部の洗浄時
など負圧がかかっても、シール性が損なわれることがな
い。
According to the third aspect of the present invention, the sealing performance is ensured in a state in which the connecting fitting bodies are connected to each other in a one-touch manner, the fluid does not accumulate, and further, a negative pressure is applied when the inside of the pipe is washed. Also, the sealing performance is not impaired.

【0023】請求項4の発明によれば、結合金具本体相
互をワンタッチ結合した状態でシール性を確保し、流体
の溜まることのない構成で、さらに、配管内部の洗浄時
など負圧がかかっても、シール部材の内径方向への移動
を確実に規制する。
According to the fourth aspect of the present invention, the sealing performance is ensured in a state in which the connecting fitting bodies are connected to each other by one-touch, the fluid does not accumulate, and further, a negative pressure is applied when cleaning the inside of the pipe. Also, the movement of the seal member in the inner diameter direction is reliably restricted.

【0024】[0024]

【発明の実施の形態】以下、本発明の実施の形態を図面
にもとづいて説明する。
Embodiments of the present invention will be described below with reference to the drawings.

【0025】図1は、分離した結合金具を示している。
この結合金具は、雌雄のない同一の構造の一対の結合金
具本体1,1から構成される。それぞれの結合金具本体
1は、たとえば配管2端部にロー付けなどの適宜な手段
で連結固定される。
FIG. 1 shows a separate fitting.
This joint is composed of a pair of joint main bodies 1 and 1 having the same structure without male and female. Each of the fitting main bodies 1 is connected and fixed to an end of the pipe 2 by an appropriate means such as brazing.

【0026】上記結合金具本体1は略円筒体からなって
いて、その外径は配管2の連結部から先端に亘って直径
が拡大するテーパー状に形成され、内径は連結される配
管2の内径と略同一に形成される。
The connecting fitting body 1 is formed of a substantially cylindrical body, the outer diameter of which is formed in a tapered shape whose diameter increases from the connecting portion of the pipe 2 to the tip thereof, and the inner diameter of which is the inner diameter of the connecting pipe 2. And are formed substantially identically.

【0027】結合金具本体1の内径先端から円筒状のシ
ール面円筒体3が螺装されている。そして、シール面円
筒体3の前端面に、後述するようにして、ゴムパッキン
など弾性材からなるシール部材4が取付け固定される。
A cylindrical sealing surface cylindrical body 3 is screwed from the distal end of the inner diameter of the coupling body 1. Then, a sealing member 4 made of an elastic material such as rubber packing is attached and fixed to the front end surface of the sealing surface cylindrical body 3 as described later.

【0028】上記結合金具本体1の先端はシール面円筒
体3を囲んでおり、ここには周方向に所定間隔を存し
て、かつ軸方向に突出する複数の嵌合突部5が一体に設
けられる。これら嵌合突部5の相互間を、それぞれ嵌合
凹部6と呼ぶ。
The distal end of the coupling metal body 1 surrounds a sealing surface cylindrical body 3, in which a plurality of fitting projections 5 projecting in the axial direction at predetermined intervals in the circumferential direction are integrally formed. Provided. The space between the fitting projections 5 is called a fitting recess 6.

【0029】上記結合金具本体1相互が軸方向に結合さ
れると、一方の結合金具本体1の嵌合突部5が他方の結
合金具本体1の嵌合凹部6内に挿入され、また一方の結
合金具本体1の嵌合凹部6内に他方の結合金具本体1の
嵌合突部5が挿入されて、互いに相補形に挿入するよう
になっている。
When the connecting metal members 1 are axially connected to each other, the fitting projection 5 of one connecting metal member 1 is inserted into the fitting recess 6 of the other connecting metal member 1, and the other one of the connecting metal members 1 is inserted into the fitting concave portion 6. The fitting projections 5 of the other fitting body 1 are inserted into the fitting recesses 6 of the fitting body 1 so as to be complementarily inserted into each other.

【0030】なお、嵌合凹部6の幅寸法は嵌合突部5の
幅寸法よりも広く形成されていて、嵌合凹部6内に嵌合
突部5が挿入した状態で、対向する側面相互間に隙間を
存することになる。
The width of the fitting recess 6 is formed wider than the width of the fitting projection 5. There will be gaps between them.

【0031】上記嵌合突部5の一方の側面5aには、周
方向に突出する係止鉤部7が一体に設けられる。したが
って、互いの嵌合突部5に突設される係止鉤部7相互が
係合することにより、結合金具本体1相互が軸方向に結
合されることとなる。
A locking hook 7 projecting in the circumferential direction is integrally provided on one side surface 5a of the fitting projection 5. Therefore, when the locking hooks 7 projecting from the fitting projections 5 are engaged with each other, the coupling metal bodies 1 are axially coupled to each other.

【0032】また、係止鉤部7の係止面は、周方向に対
して所定の角度だけオーバーハング状に傾斜しており、
これらが係合した状態で流体圧などにより結合金具本体
1相互を引き離す方向の荷重が作用した場合に、係止鉤
部7相互はより強く係合し、結合金具本体1相互の抜け
を確実に防止するように構成される。
The locking surface of the locking hook 7 is inclined by a predetermined angle with respect to the circumferential direction so as to overhang.
When a load is applied in a direction in which the coupling metal bodies 1 are separated from each other due to fluid pressure or the like in a state where they are engaged, the locking hooks 7 are more strongly engaged with each other, so that the coupling metal bodies 1 can be securely removed from each other. It is configured to prevent.

【0033】さらに、係止鉤部7相互が係合した状態
で、嵌合突部5の先端面と嵌合凹部6の奥壁面との間に
隙間を存している。したがって、係止鉤部7相互が係合
した状態から、嵌合突部5と嵌合凹部6とがさらに軸方
向に互いに進入するように移動可能である。
Further, a gap exists between the distal end surface of the fitting projection 5 and the inner wall surface of the fitting recess 6 in a state where the locking hooks 7 are engaged with each other. Therefore, from the state in which the locking hooks 7 are engaged with each other, the fitting protrusion 5 and the fitting recess 6 can move so as to further enter each other in the axial direction.

【0034】係止鉤部7が設けられていない嵌合突部5
の他方の側面5bは、結合金具本体1の軸方向に対して
傾斜している。すなわち、嵌合突部5は嵌合凹部6の底
部に相当する基端から先端に亘って周方向の幅寸法が狭
くなるテーパー状に形成され、上記側面5bは嵌合突部
5を嵌合凹部6に挿入する際のガイド面をなす。
The fitting projection 5 not provided with the locking hook 7
The other side surface 5b is inclined with respect to the axial direction of the fitting body 1. That is, the fitting protrusion 5 is formed in a tapered shape in which the width in the circumferential direction becomes narrower from the base end corresponding to the bottom of the fitting recess 6 to the tip thereof, and the side surface 5b is fitted with the fitting protrusion 5. It forms a guide surface when inserted into the recess 6.

【0035】上記テーパー状側面5bには、それぞれ付
勢機構8が設けられている。この付勢機構8は、図2に
拡大して示すように、円筒形のケース部材9内に突没自
在に収容される付勢部材としての鋼球10と、この鋼球
10を嵌合突部側面5bから突出する方向に弾性的に押
圧付勢するスプリング11とから構成される。
An urging mechanism 8 is provided on each of the tapered side surfaces 5b. As shown in an enlarged view in FIG. 2, the urging mechanism 8 includes a steel ball 10 as an urging member housed in a cylindrical case member 9 so as to be freely protruded and retracted. And a spring 11 that elastically presses and biases in a direction protruding from the side surface 5b.

【0036】同図に示すように、嵌合突部5が相手側の
嵌合凹部6内に嵌合されると、付勢機構8相互が対向し
て鋼球10相互が互いに当接し押圧しあう。その結果、
嵌合突部5の付勢機構8が設けられる側面5b相互が離
反し、かつ反対側の側面5a相互が密接するよう押圧付
勢される。
As shown in the drawing, when the fitting projection 5 is fitted into the mating recess 6 on the other side, the urging mechanisms 8 face each other, and the steel balls 10 abut against each other and press. meet. as a result,
The side surfaces 5b of the fitting protrusion 5 where the urging mechanism 8 is provided are separated from each other, and are pressed and urged so that the opposite side surfaces 5a are in close contact with each other.

【0037】そして、これら側面5aには係止鉤部7が
設けられているので、上記付勢機構8、8の作用によっ
て係止鉤部7、7相互はより強固に係合し、衝撃などに
よって問題が発生しない。
Since the locking hooks 7 are provided on these side surfaces 5a, the locking hooks 7, 7 are more firmly engaged with each other by the action of the urging mechanisms 8, 8, and the impacts, etc. Causes no problems.

【0038】このようにして構成される結合金具本体
1,1相互を結合するには、一方の結合金具本体1の嵌
合突起5に対して他方の結合金具本体1の嵌合凹部6を
正対させる。必然的に、一方の結合金具本体1の嵌合凹
部6に対して他方の結合金具本体1の嵌合突部5が正対
する。
In order to connect the thus-constructed fitting main bodies 1 and 1 to each other, the fitting recess 5 of the other fitting main body 1 is oriented correctly with respect to the fitting projection 5 of one fitting main body 1. Let it be. Inevitably, the fitting projection 5 of the other fitting body 1 faces the fitting recess 6 of one fitting body 1.

【0039】そのままの姿勢を保持して、少なくとも一
方の結合金具本体1を軸方向に移動すればよい。結合金
具本体1,1相互の嵌合凹部6内に嵌合突部5が挿入さ
れ、かつ付勢機構8の鋼球10,10相互が転接した状
態で、互いの係止鉤部7,7相互が係合する。
It is only necessary to move at least one of the coupling metal members 1 in the axial direction while maintaining the posture. In a state where the fitting projection 5 is inserted into the fitting recess 6 of the coupling metal fittings 1 and 1 and the steel balls 10 and 10 of the urging mechanism 8 are in rolling contact with each other, the locking hooks 7 and 7 engage each other.

【0040】結合金具本体1,1相互が結合されて、配
管2,2相互の結合がなされる。同時に、後述するよう
にシール部材4,4相互が密接状態となり、結合金具本
体1,1と配管2,2相互に対するシール性が確保され
る。
The connection fitting bodies 1 and 1 are connected to each other, so that the pipes 2 and 2 are connected to each other. At the same time, the sealing members 4 and 4 are in close contact with each other, as described later, and the sealing performance with respect to the coupling metal bodies 1 and 1 and the pipes 2 and 2 is ensured.

【0041】必要に応じて配管2を分解(分離)する場
合は、いずれか一方の結合金具本体1を周方向に回動付
勢すればよい。このときの回動付勢方向は、付勢機構8
が設けられる側面5b、5b相互が密接する方向であ
る。
When the pipe 2 is to be disassembled (separated) as necessary, one of the coupling metal bodies 1 may be urged to rotate in the circumferential direction. The rotation urging direction at this time is the urging mechanism 8
Is a direction in which the side surfaces 5b and 5b provided with each other are in close contact with each other.

【0042】すなわち、付勢機構8の押圧付勢力に抗し
て結合金具本体1を回動することとなり、側面5b,5
b相互が密接したところで、それまで係合状態にあった
係止鉤部7,7相互が離反する。結合金具本体1,1相
互の結合状態が解除されて、結合金具本体は互いに自由
になり、分解できる。
That is, the coupling body 1 is rotated against the urging force of the urging mechanism 8, and the side surfaces 5b and 5
When the b is close to each other, the locking hooks 7, 7 which have been in the engaged state are separated from each other. The connection state of the coupling metal bodies 1 and 1 is released, and the coupling metal bodies are free from each other and can be disassembled.

【0043】なお、ここでは結合金具本体1に配管2を
接続したが、配管に変わって弁類などの配管接続機器あ
るいはホース類でもよく、また、結合金具本体1を、本
体部と、嵌合部とから構成するよう変更してもよい。
Although the pipe 2 is connected to the fitting body 1 here, a pipe connecting device such as a valve or a hose may be used instead of the pipe. The fitting body 1 may be connected to the main body by fitting. It may be changed so that it is constituted by a part.

【0044】すなわち、本体部の一端に配管2を接続
し、他端にシール面円筒体3を取付け、嵌合部には嵌合
突部5、嵌合凹部6、係止鉤部7、付勢機構8などを形
成する。このことにより、結合金具本体1,1相互の結
合と分解(分離)の際は、嵌合部に対する操作ですみ、
嵌合部が容易に扱えて作業性の向上を得る。
That is, the pipe 2 is connected to one end of the main body, and the sealing surface cylindrical body 3 is attached to the other end, and the fitting portion has a fitting projection 5, a fitting recess 6, a locking hook 7, and the like. The biasing mechanism 8 and the like are formed. As a result, when connecting and disassembling (separating) the connection metal fittings 1 and 1, the operation on the fitting portion is sufficient.
The fitting portion can be easily handled to improve workability.

【0045】いずれの構成の係合金具本体1であって
も、シール面円筒体3と、このシール面円筒体3に取付
けられるシール部材4は、図3以下に示すようになって
いる。以下、詳細に説明する。
Regardless of the configuration of the engagement fitting main body 1 of any structure, the seal surface cylindrical body 3 and the seal member 4 attached to the seal surface cylindrical body 3 are as shown in FIG. The details will be described below.

【0046】図3は、第1の実施の形態のシール面円筒
体3Aと、このシール面円筒体3Aに取付けられるシー
ル部材4Aを示す。
FIG. 3 shows the seal face cylindrical body 3A of the first embodiment and a seal member 4A attached to the seal face cylindrical body 3A.

【0047】上記シール面円筒体3Aの前端面には、周
方向に亘って取付用凹部15が設けられていて、この取
付用凹部15に上記シール部材4Aが取付けられる。取
付用凹部15は、シール面円筒体3Aの内径側から外径
側に亘って漸次突出する方向に斜めに形成される底面1
5aと、シール面円筒体3Aの軸方向に平行な周面15
bを備えている。上記底面15aの傾斜角度は、たとえ
ば、15度に設定されている。
A mounting recess 15 is provided in the front end surface of the sealing surface cylindrical body 3A in the circumferential direction, and the sealing member 4A is mounted in the mounting recess 15. The mounting recess 15 is formed on the bottom surface 1 that is formed obliquely in a direction that gradually protrudes from the inner diameter side to the outer diameter side of the sealing surface cylindrical body 3A.
5a and a peripheral surface 15 parallel to the axial direction of the sealing surface cylindrical body 3A.
b. The inclination angle of the bottom surface 15a is set to, for example, 15 degrees.

【0048】さらに、取付用凹部15の周面15b前端
には、内径方向に突出する係止突起15cが一体に設け
られる。この係止突起15cは、周面全面に亘って設け
てもよく、あるいは周方向に所定間隔を存して設けても
よい。
Further, at the front end of the peripheral surface 15b of the mounting concave portion 15, a locking projection 15c projecting in the inner diameter direction is integrally provided. The locking projections 15c may be provided over the entire peripheral surface, or may be provided at predetermined intervals in the circumferential direction.

【0049】上記シール部材4Aは、所定の肉厚および
内径と外径とを有するリング状をなす。内径はシール面
円筒体3Aの内径と同一寸法に形成され、外径は取付用
凹部15の周面15b直径と略同一である。詳しくは、
シール部材4Aの方を5%位大きくしておき、これを縮
めて取付けることによって、外れ難くしている。
The seal member 4A has a ring shape having a predetermined thickness, an inner diameter and an outer diameter. The inner diameter is formed to be the same as the inner diameter of the sealing surface cylindrical body 3A, and the outer diameter is substantially the same as the diameter of the peripheral surface 15b of the mounting recess 15. For more information,
The seal member 4A is made larger by about 5%, and is shrunk and attached to make it difficult to come off.

【0050】シール部材4Aの一端面4aは、内径側か
ら外径側に亘って漸次突出する傾斜面をなしていて、こ
の傾斜角度は取付用凹部底面15aの傾斜角度と同一で
ある。また、シール部材4Aの周面は軸方向と平行であ
り、この外径前端には内径方向に凹陥形成される係止凹
部16が設けられる。
The one end face 4a of the seal member 4A forms an inclined surface that gradually projects from the inner diameter side to the outer diameter side, and the inclination angle is the same as the inclination angle of the mounting recess bottom surface 15a. The peripheral surface of the seal member 4A is parallel to the axial direction, and a locking recess 16 is formed at the front end of the outer diameter so as to be recessed in the inner diameter direction.

【0051】上記係止凹部16は、取付用凹部15に設
けられる係止突起15cの寸法形状と対応するよう形成
されていて、このことからシール部材4Aはシール面円
筒体3Aの取付用凹部15に嵌め込まれる。
The locking recess 16 is formed so as to correspond to the size and shape of the locking projection 15c provided in the mounting recess 15, so that the sealing member 4A can be attached to the mounting recess 15 of the sealing surface cylindrical body 3A. Fit into.

【0052】しかも、シール面円筒体3Aの係止突起1
5cにシール部材4Aの係止凹部16が係止されている
ところから、シール部材4Aがシール面円筒体3Aから
軸方向へ抜け出ることの防止がなされている。
In addition, the locking projection 1 of the sealing surface cylindrical body 3A
Since the locking recess 16 of the seal member 4A is locked to 5c, the seal member 4A is prevented from coming off the seal face cylindrical body 3A in the axial direction.

【0053】シール部材4Aがシール面円筒体3Aに取
付けられた状態で、シール部材4Aの一端面4bはシー
ル面円筒体3Aの前端面から突出している。なお説明す
れば、シール部材4Aの突出端面4bは、その突出量が
外径側よりも内径側が大になるよう傾斜形成される。
With the sealing member 4A attached to the sealing surface cylinder 3A, one end surface 4b of the sealing member 4A protrudes from the front end surface of the sealing surface cylinder 3A. To be more specific, the projecting end surface 4b of the seal member 4A is formed so as to be inclined such that the amount of protrusion is greater on the inner diameter side than on the outer diameter side.

【0054】シール部材4Aの突出端面4bに形成され
る傾斜角度は、シール部材4Aの一端面4aと取付用凹
部15の底面15aに形成される傾斜角度と同程度であ
り、したがって例えば15度に設定されている。
The inclination angle formed on the protruding end surface 4b of the seal member 4A is substantially the same as the inclination angle formed on the one end surface 4a of the seal member 4A and the bottom surface 15a of the mounting recess 15; Is set.

【0055】結局、シール部材4Aの最も肉厚の厚い部
位は内径側であり、肉厚の薄い部位は外径側であって、
その両端面は内径側から外径側に下がり勾配となる傾斜
面に形成されることになる。
After all, the thickest portion of the seal member 4A is on the inner diameter side, and the thinner portion is on the outer diameter side,
Both end surfaces are formed as inclined surfaces having a downward slope from the inner diameter side to the outer diameter side.

【0056】図3(A)は、結合金具本体1相互を正対
させ、互いのシール面円筒体3Aに取付けられるシール
部材4Aが対向している状態を示している。すなわち、
結合金具本体1相互の結合前である。
FIG. 3 (A) shows a state in which the coupling metal bodies 1 face each other, and the sealing members 4A attached to the sealing surface cylinders 3A face each other. That is,
Before the joining metal fittings 1 are joined to each other.

【0057】図3(B)は、いずれか一方の結合金具本
体1を軸方向に移動して、結合金具本体1相互を結合さ
せることにより、シール部材4A相互が弾性変形して密
接しシール性を確保している状態を示している。
FIG. 3 (B) shows that one of the metal fittings 1 is moved in the axial direction and the metal fittings 1 are connected to each other, whereby the sealing members 4A are elastically deformed and come into close contact with each other to achieve a sealing property. Is shown.

【0058】シール部材4Aの突出端面4bにおける傾
斜角度の設定から、シール部材4A相互を突き合わせて
も突出端面4bの外径側周縁は互いに密着せずに残り、
かつシール面円筒体3A相互の前端面は所定の間隔を存
する。
From the setting of the inclination angle at the protruding end surface 4b of the sealing member 4A, even if the sealing members 4A abut against each other, the outer peripheral edges of the protruding end surfaces 4b do not adhere to each other and remain.
In addition, the front end surfaces of the sealing surface cylindrical bodies 3A are at a predetermined interval.

【0059】このとき、上記配管2および結合金具本体
1相互内には流体は流通せず、内部が無加圧状態であ
る。また、シール部材4Aは弾性材からなるので、全体
の体積は結合前と結合後で全く変化しない。そのため、
シール部材4Aの外径側は結合前の傾斜面4bから突出
して断面R状をなし、内径側は中心軸方向に突出するよ
う弾性変形する。
At this time, no fluid flows between the pipe 2 and the joint fitting main body 1, and the inside is in a non-pressurized state. Further, since the sealing member 4A is made of an elastic material, the entire volume does not change at all before and after the coupling. for that reason,
The outer diameter side of the seal member 4A protrudes from the inclined surface 4b before coupling to form an R-shaped cross section, and the inner diameter side elastically deforms so as to protrude in the central axis direction.

【0060】図3(C)は、実際に配管2および結合金
具本体1内に流体を流通させた状態を示していて、内部
に所定の圧力がかかっている。シール部材4Aの内径面
は流体圧を受けて外径側へ押圧され、その分、外径側周
縁は外方へ突出する。
FIG. 3 (C) shows a state where a fluid is actually circulated in the pipe 2 and the fitting body 1, and a predetermined pressure is applied inside. The inner diameter surface of the seal member 4A is pressed to the outer diameter side by receiving the fluid pressure, and the outer diameter side peripheral edge protrudes outward accordingly.

【0061】結合金具本体1相互を結合してシール部材
4A相互を密接させれば、シール部材4A相互によりシ
ール性を確保する。その一方で、シール部材4Aとシー
ル面円筒体3Aとの間に凹部空間が形成されないから、
流体の液溜まりが生じることがなく、円滑に流通して常
に新鮮な流体が得られる。
If the joining members 1 are joined to each other so that the sealing members 4A are in close contact with each other, the sealing properties between the sealing members 4A are ensured. On the other hand, since no concave space is formed between the sealing member 4A and the sealing surface cylindrical body 3A,
There is no accumulation of fluid, and fresh fluid is always obtained by flowing smoothly.

【0062】図4は、第2の実施の形態のシール面円筒
体3Bと、このシール面円筒体3Bに取付けられるシー
ル部材4Bを示す。
FIG. 4 shows a sealing surface cylinder 3B of the second embodiment and a sealing member 4B attached to the sealing surface cylinder 3B.

【0063】第1の実施の形態と同一部位については同
番号を付していて、シール面円筒体3Bに設けられる係
止突起15と、シール部材4Bに設けられる係止凹部1
6が、シール部材4Bの突出端面4bよりも内側に形成
されることが相違する。すなわち、シール部材4Bの外
径側周縁がシール面円筒体3Bの前端面を覆っていて、
シール面円筒体3Bの前端面は少しも露出していない。
The same parts as those in the first embodiment are denoted by the same reference numerals, and the locking projection 15 provided on the sealing surface cylinder 3B and the locking recess 1 provided on the sealing member 4B
6 is formed inside the protruding end surface 4b of the seal member 4B. That is, the outer peripheral edge of the sealing member 4B covers the front end surface of the sealing surface cylindrical body 3B,
The front end face of the sealing face cylindrical body 3B is not exposed at all.

【0064】図4(A)から図4(C)に亘って、先に
図3(A)から図3(C)に亘る作用とほとんど同一の
作用をなす。特に相違する点として、図4(C)の流体
を流通させた状態で、内部に所定圧力がかかっているの
で、シール部材4Bの内周面は流体圧を受けて外径側へ
押圧され、その分、外径側周縁がシール面円筒体3Bか
ら外方へ突出することである。
In FIGS. 4A to 4C, the operation is almost the same as that in FIGS. 3A to 3C. 4C, in which a predetermined pressure is applied to the inside while the fluid shown in FIG. 4C is circulated, the inner peripheral surface of the seal member 4B receives the fluid pressure and is pressed to the outer diameter side. That is, the outer diameter side peripheral edge protrudes outward from the sealing surface cylindrical body 3B.

【0065】そして、結合金具本体1相互を結合してシ
ール部材4B相互を密接させれば、シール性を確保する
一方で、シール部材4Bとシール面円筒体3Bとの間に
凹部空間が形成されないから、流体の液溜まりが生じる
ことがなく、円滑に流通して常に新鮮な流体が得られ
る。
If the sealing members 4B are brought into close contact with each other by connecting the fitting bodies 1 to each other, the sealing performance is ensured, but no concave space is formed between the sealing member 4B and the sealing surface cylindrical body 3B. As a result, the fluid does not accumulate, and the fluid flows smoothly and a fresh fluid is always obtained.

【0066】図5は、第3の実施の形態のシール面円筒
体3Cと、このシール面円筒体3Cに取付けられるシー
ル部材4Cとを示している。
FIG. 5 shows a seal face cylindrical body 3C of the third embodiment and a seal member 4C attached to the seal face cylindrical body 3C.

【0067】第1の実施の形態と同一部位については同
番号を付していて、ここでの特徴は、たとえば配管2内
部を蒸気洗浄したあと配管が冷えて水蒸気が結露した場
合に、配管2および結合金具本体1内に負圧がかかるの
で、正圧ばかりでなく負圧にも対応できるシール構造を
備えることである。
The same parts as those in the first embodiment are denoted by the same reference numerals. The feature here is that, for example, when the inside of the pipe 2 is steam-cleaned and the pipe cools down and the water vapor condenses, the pipe 2 In addition, since a negative pressure is applied to the inside of the fitting body 1, a seal structure capable of coping with not only a positive pressure but also a negative pressure is provided.

【0068】すなわち、シール面円筒体3Cの前端面に
取付用凹部15を備え、かつ取付用凹部15にシール部
材4Cが取付けられることは変わりがないが、シール部
材4Cの突出端面4bにおける外径側周端部に沿って負
圧シール部17Aが一体に設けられていることが相違す
る。
That is, although the mounting concave portion 15 is provided on the front end surface of the sealing surface cylindrical body 3C, and the sealing member 4C is mounted in the mounting concave portion 15, the outer diameter of the sealing end member 4C at the protruding end surface 4b remains unchanged. The difference is that the negative pressure seal portion 17A is provided integrally along the side peripheral end portion.

【0069】この負圧シール部17Aは、突出端面4b
の内径側から外径側に亘る傾斜とは逆に、内径側から外
径側に突出量が大になる傾斜になっていて、負圧シール
部17A全体がシール面円筒体3C前端に設けられる係
止突起15c上に載る。
The negative pressure seal portion 17A is provided with a protruding end face 4b.
In contrast to the inclination from the inner diameter side to the outer diameter side, the inclination is such that the projection amount increases from the inner diameter side to the outer diameter side, and the entire negative pressure seal portion 17A is provided at the front end of the sealing surface cylindrical body 3C. It rests on the locking projection 15c.

【0070】図5(A)は、結合金具本体1相互を正対
させ、互いのシール面円筒体3Cに取付けられるシール
部材4Cが対向している状態を示している。すなわち、
結合金具本体1相互の結合前である。
FIG. 5 (A) shows a state in which the joint fitting bodies 1 face each other, and the sealing members 4C attached to the sealing surface cylinders 3C face each other. That is,
Before the joining metal fittings 1 are joined to each other.

【0071】図5(B)は、結合金具本体1相互を結合
させ、シール部材4Cの突出端面4b相互を密接させて
いる。シール性を確保しているが、流体は流通していな
い無圧状態である。負圧シール部17A相互もある程度
密接しており、これより内径側のシール傾斜面4bとの
間に略菱形状の空間部が形成される。
In FIG. 5B, the connecting metal members 1 are connected to each other, and the protruding end surfaces 4b of the sealing member 4C are brought into close contact with each other. A non-pressure state where fluid is not circulated, although the sealing property is ensured. The negative pressure seal portions 17A are also close to each other to some extent, and a substantially rhombus-shaped space is formed between the negative pressure seal portions 17A and the seal inclined surface 4b on the inner diameter side.

【0072】配管2および結合金具本体1内に流体を流
通させると、特に図示しないが、シール部材4Cに正圧
がかかることにより内周面は外径側へ押圧され、その
分、外径側周縁は外方へ突出する。
When a fluid is caused to flow through the pipe 2 and the fitting body 1, although not shown, the inner peripheral surface is pressed to the outer diameter side by applying a positive pressure to the seal member 4C, and the outer diameter side is correspondingly pressed. The periphery protrudes outward.

【0073】負圧シール部17A横の菱形空間部は変形
するが、依然として空間部として残ることは間違えな
い。ただし、ここには流体が導かれず、シール部材4C
によるシール性が確保される一方で、凹部空間が形成さ
れず液溜りがないから、流体は結合金具本体1内を円滑
に流通する。
Although the diamond-shaped space beside the negative pressure seal portion 17A is deformed, it is undeniable that it remains as a space. However, no fluid is introduced here and the sealing member 4C
While the sealing performance is ensured by the above, since the concave space is not formed and there is no liquid pool, the fluid smoothly flows through the inside of the fitting body 1.

【0074】図5(C)は、たとえば配管2内部を蒸気
洗浄した場合で、配管2および結合金具本体1相互内部
に負圧がかかった状態を示している。配管内が負圧にな
ると、結合金具本体1相互を押し付ける方向の荷重が作
用する。係止鉤部7相互が係合した状態で、嵌合突部5
の先端面と嵌合凹部6の奥壁面との間に隙間を有してい
るので、この荷重によって嵌合突部5と嵌合凹部6とが
さらに軸方向に互いに進入するように移動する。
FIG. 5C shows a state in which, for example, the inside of the pipe 2 is subjected to steam cleaning, and a state in which a negative pressure is applied to the inside of the pipe 2 and the joint fitting body 1. When a negative pressure is applied to the inside of the pipe, a load is applied in a direction in which the joint fitting bodies 1 are pressed against each other. With the locking hooks 7 engaged with each other, the fitting projection 5
Since there is a gap between the distal end surface and the inner wall surface of the fitting recess 6, the fitting protrusion 5 and the fitting recess 6 are further moved in the axial direction by this load.

【0075】つまり、互いのシール面円筒体3Cを押し
付けるように移動するので、シール部材4Cの外径側に
一体に設けられる負圧シール部17A相互も軸方向に圧
縮力を受けて弾性変形し、互いの密接長さがより長くな
ってシール力を増す。
That is, the negative pressure seal portions 17A integrally provided on the outer diameter side of the seal member 4C are elastically deformed by receiving the compressive force in the axial direction because they move so as to press the cylindrical surfaces 3C of each other. , The length of close contact with each other is longer, and the sealing force is increased.

【0076】また、配管内が真空になった場合を考える
と、負圧シール部17Aには大気圧による約0.1MP
aの圧力がかかって、負圧シール部17Aは内径側へ押
圧される。
Further, considering the case where the inside of the pipe is evacuated, the negative pressure seal portion 17A has a pressure of about 0.1 MPa due to the atmospheric pressure.
The pressure a is applied, and the negative pressure seal portion 17A is pressed toward the inner diameter side.

【0077】このとき、負圧シール部17Aが取付いて
いるシール面円筒体3Cの前端の周面全面に亘って設け
られた係止突起15cの最先端には、シール面円筒体3
Cの外径側から内径側に亘って漸次突出する方向に斜め
に形成される負圧シール受け面15dが設けてある。こ
の負圧シール受け面15dの傾斜角度は、例えば20度
に設定されている。
At this time, at the tip of the locking projection 15c provided over the entire peripheral surface of the front end of the sealing surface cylinder 3C to which the negative pressure sealing portion 17A is attached, the sealing surface cylinder 3C is provided.
There is provided a negative pressure seal receiving surface 15d which is formed obliquely in a direction gradually protruding from the outer diameter side to the inner diameter side of C. The inclination angle of the negative pressure seal receiving surface 15d is set to, for example, 20 degrees.

【0078】一方、シール部材4Cの外径側に設けられ
た負圧シール部17Aに形成される傾斜角度は、突出端
面4bに形成された傾斜角度より多少大きい方がよいの
で、例えば25度に設定されている。
On the other hand, the inclination angle formed on the negative pressure seal portion 17A provided on the outer diameter side of the seal member 4C is preferably slightly larger than the inclination angle formed on the protruding end face 4b. Is set.

【0079】ここで、負圧がかかった状態でのシール機
構を、図5(C)から説明する。対向する負圧シール受
け面15dで挟まれて密接した、2つの負圧シール部1
7Aを一体として見ると、その断面形状はシール面円筒
体3Cの内径側を向いたクサビ形状をなしている。
Here, the sealing mechanism under a negative pressure will be described with reference to FIG. Two negative pressure seal portions 1 closely sandwiched between opposed negative pressure seal receiving surfaces 15d.
When 7A is viewed integrally, its cross-sectional shape is a wedge shape facing the inner diameter side of the sealing surface cylindrical body 3C.

【0080】上記負圧シール部17Aには、大気圧によ
る約0.1MPaの圧力が加わって負圧シール部17A
は内径側へ押圧されるので、あたかもクサビを打ち込ん
だような状態となってシール効果を発揮するものであ
る。
A pressure of about 0.1 MPa due to the atmospheric pressure is applied to the negative pressure seal 17A.
Is pressed to the inner diameter side, so that it is as if a wedge is driven in, and exhibits a sealing effect.

【0081】なお、この機構は内圧を受ける場合でも同
様である。図3に示す取付用凹部15の底面15aで挟
まれて密接した2つのシール部材4を一体として見る
と、その断面形状はシール面円筒体3Aの外径側を向い
たクサビ形状をなしている。
This mechanism is the same even when receiving an internal pressure. When the two sealing members 4 sandwiched and closely contacted by the bottom surface 15a of the mounting concave portion 15 shown in FIG. 3 are integrally viewed, the cross-sectional shape is a wedge shape facing the outer diameter side of the sealing surface cylindrical body 3A. .

【0082】シール部材4には内圧による大きな圧力が
加わって、シール部材4は外径側へ押圧されるので、あ
たかもクサビを打ち込むような状態となってシール効果
を発揮するものである。
Since a large pressure due to the internal pressure is applied to the seal member 4 and the seal member 4 is pressed to the outer diameter side, the sealing effect is exhibited as if a wedge is driven.

【0083】また、内圧用のシール部材4と負圧シール
部17Aの大きさを比べると、負圧シール部17Aの方
が小さいが、その理由は、3.0MPaにも達する流体
の圧力に比べて、真空時に受ける大気圧の方が約0.1
MPaと非常に小さいからである。
When the size of the internal pressure sealing member 4 and the size of the negative pressure sealing portion 17A are compared, the negative pressure sealing portion 17A is smaller than that of the fluid pressure reaching 3.0 MPa. Atmospheric pressure received in vacuum is about 0.1
This is because it is very small as MPa.

【0084】すなわち、結合金具本体1相互を結合して
シール部材4C相互を密接させれば、配管2と結合金具
本体1内に正圧がかかったときは勿論のこと、負圧がか
かった状態でも、負圧シール部17Aを備えたシール部
材4C相互によってシール性を確保する。
That is, if the joint members 1 are joined to each other so that the seal members 4C are brought into close contact with each other, the pipe 2 and the joint member 1 can be in a state where a positive pressure is applied or a negative pressure is applied. However, the sealability is ensured by the seal members 4C provided with the negative pressure seal portions 17A.

【0085】その一方で、シール部材4Cと結合金具本
体1との間に凹部空間が形成されないから、流体の液溜
まりが生じることがなく、円滑に流通して常に新鮮な流
体が得られる。
On the other hand, since no recessed space is formed between the seal member 4C and the coupling fitting main body 1, no fluid pool is generated, and the fluid flows smoothly and fresh fluid is always obtained.

【0086】図6は、第4の実施の形態のシール面円筒
体3Dと、このシール円筒体3Dに取付けられるシール
部材4Dとを示している。
FIG. 6 shows a seal face cylindrical body 3D of the fourth embodiment and a seal member 4D attached to the seal cylindrical body 3D.

【0087】上記第1の実施の形態と同一部位について
は同番号を付していて、ここでは第3の実施の形態と同
様、正圧ばかりでなく負圧にも対応できるシール部材4
Dを備えることを特徴としている。
The same parts as those in the first embodiment are denoted by the same reference numerals, and here, as in the third embodiment, the sealing member 4 which can handle not only positive pressure but also negative pressure.
D is provided.

【0088】負圧シール部17Bとして、シール部材4
Dの突出端面4bにおける外径側周縁に沿って舌片状の
ものが一体に設けられてなる。この舌片状負圧シール部
17Bは、シール面円筒体3D前端の係止突起15cと
は離間している。
As the negative pressure sealing portion 17B, the sealing member 4
A tongue-like member is integrally provided along the outer peripheral edge of the protruding end surface 4b of D. The tongue-shaped negative pressure sealing portion 17B is separated from the locking projection 15c at the front end of the sealing surface cylindrical body 3D.

【0089】図6(A)から図6(C)に亘って、先に
図5(A)から図5(C)に亘る作用とほとんど同一の
作用をなす。すなわち、図6(C)に示す配管2と結合
金具本体1内部に負圧がかかった状態で、負圧シール部
17B相互の密接長さがより長くなるよう弾性変形す
る。
From FIG. 6 (A) to FIG. 6 (C), the operation is almost the same as the operation from FIG. 5 (A) to FIG. 5 (C). In other words, in a state where a negative pressure is applied to the pipe 2 and the inside of the coupling fitting main body 1 shown in FIG. 6C, the negative pressure seal portions 17B are elastically deformed so that the close contact length between them becomes longer.

【0090】このようにして、配管2と結合金具本体1
内に正圧がかかったときは勿論のこと、負圧がかかって
もシール性が確保される一方で、シール部材4Dとシー
ル用円筒体3Dとの間に凹部空間が形成されないから、
流体の液溜まりが生じることがなく、円滑に流通して常
に新鮮な流体が得られる。
In this manner, the pipe 2 and the coupling fitting body 1
Not only when a positive pressure is applied, but also when a negative pressure is applied, the sealing performance is ensured, but no concave space is formed between the sealing member 4D and the sealing cylinder 3D.
No fluid accumulation occurs, and a fresh fluid is always obtained by flowing smoothly.

【0091】図7は、第5の実施の形態のシール面円筒
体3Eと、このシール面円筒体3Eに取付けられるシー
ル部材4Eとを示している。
FIG. 7 shows a seal face cylindrical body 3E of the fifth embodiment and a seal member 4E attached to the seal face cylindrical body 3E.

【0092】上記第1の実施の形態と同一部位について
は同番号を付していて、ここでは、負圧がかかった場合
のシール部材4Eの内径方向への位置ズレを規制するこ
とを特徴にしている。
The same portions as those in the first embodiment are denoted by the same reference numerals, and here, a feature is to limit the displacement of the seal member 4E in the inner diameter direction when a negative pressure is applied. ing.

【0093】すなわち、以上説明した実施の形態では、
取付用凹部15の底面15aと周面15bに、シール部
材4の一端面4aと周面が嵌め込まれおり、上記底面1
5aおよび一端面4aは外径側よりも内径側の突出量が
小になるように傾斜形成されている。
That is, in the embodiment described above,
One end surface 4a and the peripheral surface of the sealing member 4 are fitted into the bottom surface 15a and the peripheral surface 15b of the mounting concave portion 15, and
5a and one end surface 4a are formed so as to be inclined such that the amount of protrusion on the inner diameter side is smaller than that on the outer diameter side.

【0094】密接するシール部材4相互に正圧がかかっ
た場合は、外径方向へ圧力を受けるが、この方向は上記
底面15aと一端面4aとの傾斜面で受けられる方向で
あって、何らの問題もない。
When a positive pressure is applied to the sealing members 4 that are in close contact with each other, a pressure is applied in the outer radial direction. This direction is a direction that can be received by the inclined surface between the bottom surface 15a and the one end surface 4a. No problem.

【0095】ただし、負圧を受けるとシール部材4は内
径側へ移動する圧力を受ける。この方向は、上記底面1
5aと一端面4aの傾斜に沿う方向でもあり、以上説明
したシール部材4では内径方向に位置ズレする虞れがあ
る。
However, when receiving a negative pressure, the seal member 4 receives a pressure moving toward the inner diameter side. This direction corresponds to the bottom 1
This is also a direction along the inclination of 5a and the one end surface 4a, and there is a possibility that the position of the seal member 4 described above is shifted in the inner diameter direction.

【0096】そこで、上記シール面円筒体3Eに設けら
れる取付用凹部15の底面15a一部と、シール部材4
Eの一端面4aに、移動規制用突部18aと移動規制用
凹部19aを設けている。
Therefore, a part of the bottom surface 15a of the mounting recess 15 provided in the sealing surface cylindrical body 3E and the sealing member 4
On one end surface 4a of E, a movement regulating projection 18a and a movement regulating recess 19a are provided.

【0097】なお説明すれば、基本的には、シール部材
4Eの一端面4aと取付用凹部15の底面15aが、外
径側よりも内径側の突出量が小になるように傾斜形成さ
れるが、特に、内径から所定の距離までの間は、逆に、
外径側よりも内径側の突出量が大になるように傾斜形成
される。
To be more specific, basically, the one end face 4a of the seal member 4E and the bottom face 15a of the mounting recess 15 are formed so as to be inclined so that the amount of protrusion on the inner diameter side is smaller than the outer diameter side. However, in particular, during a predetermined distance from the inner diameter,
The projection is formed so that the amount of protrusion on the inner diameter side is larger than that on the outer diameter side.

【0098】このことから、シール部材4Eの一端面4
aには突部18aが設けられることになり、これを移動
規制用突部と呼ぶ。また、取付用凹部15の底面15a
には移動規制用突部18aと係合する凹部19aが設け
られ、これを移動規制用凹部と呼ぶ。
Therefore, one end face 4 of the seal member 4E
a is provided with a projection 18a, which is referred to as a movement regulating projection. Also, the bottom surface 15a of the mounting recess 15
Is provided with a concave portion 19a which engages with the movement restricting projection 18a, which is referred to as a movement restricting concave portion.

【0099】図7(A)は、結合金具本体1相互を正対
させ、互いのシール面円筒体3Eに取付けられるシール
部材4Eが対向している状態を示している。すなわち、
結合金具本体1相互の結合前である。
FIG. 7 (A) shows a state in which the joint fitting bodies 1 face each other, and the sealing members 4E attached to the sealing surface cylinders 3E face each other. That is,
Before the joining metal fittings 1 are joined to each other.

【0100】図7(B)は、シール部材4E相互の突出
端面4bを密接させてシールを確保し、かつ流体が流通
していない無圧状態を示している。シール部材4Eによ
るシール性が確保される一方で、凹部空間が形成されな
いから、流体は結合金具本体内を円滑に流通して澱むこ
とがなく、常に新鮮な流体が得られる。
FIG. 7B shows a non-pressure state in which the protruding end surfaces 4b of the seal members 4E are brought into close contact with each other to secure a seal and no fluid flows. While the sealing property of the sealing member 4E is ensured, the concave space is not formed, so that the fluid smoothly flows through the inside of the fitting body and does not stagnate, so that a fresh fluid is always obtained.

【0101】図7(C)は、配管2内部に負圧がかかっ
た状態を示していて、シール部材4E相互の内周面は中
心線方向に引張られて突出し、かつ結合金具本体1の前
端面相互がより接近する。
FIG. 7 (C) shows a state in which a negative pressure is applied to the inside of the pipe 2, the inner peripheral surfaces of the seal members 4E are pulled out in the center line direction and protrude, and the front end of the joint fitting body 1 is formed. The surfaces are closer together.

【0102】このようにして、配管2と結合金具本体1
内に正圧がかかったときは勿論のこと、負圧がかかって
もシール部材4E相互においてシール性が確保される一
方で、流体は結合金具本体1内を円滑に流通する。
In this way, the pipe 2 and the coupling metal body 1
Not only when a positive pressure is applied to the inside, but also when a negative pressure is applied, the sealability between the seal members 4E is ensured, while the fluid smoothly flows through the inside of the fitting body 1.

【0103】特に、負圧状態でシール部材4Eは内径方
向へ移動するよう付勢されるが、ここではシール部材4
Eに移動規制用突起19aが設けられ、取付用凹部15
には規制用凹部18aが設けられて、互いに係合されて
いるので、シール部材4Eの内径方向の位置ズレが確実
に規制される。
In particular, the seal member 4E is urged to move in the inner diameter direction in a negative pressure state.
E is provided with a movement regulating projection 19a,
Are provided with regulating recesses 18a and are engaged with each other, so that the positional deviation of the seal member 4E in the inner diameter direction is reliably regulated.

【0104】図8は、第6の実施の形態のシール面円筒
体3Fと、このシール面円筒体3Fに取付けられるシー
ル部材4Fとを示している。
FIG. 8 shows a seal face cylindrical body 3F of the sixth embodiment and a seal member 4F attached to the seal face cylindrical body 3F.

【0105】上記第1の実施の形態と同一部位について
は同番号を付していて、ここでは、第5の実施の形態と
同様、負圧がかかった状態でシール部材4Fの内径側へ
の位置ズレを規制することを特徴としている。
The same parts as those in the first embodiment are denoted by the same reference numerals. Here, similarly to the fifth embodiment, when the negative pressure is applied to the inner side of the seal member 4F. It is characterized in that displacement is regulated.

【0106】すなわち、シール部材4Fの一端面4aと
取付用凹部15の底面15aは、基本的には先に説明し
た傾斜形状と同様とし、かつ移動規制用突部18bと移
動規制用凹部19bを備えてはいるが、ここでは内径側
から外径側に亘って曲面状をなしている。この形状は、
シールを取外して洗浄するときに、曲面なので洗浄し易
いところに特徴がある。
That is, the one end face 4a of the seal member 4F and the bottom face 15a of the mounting recess 15 have basically the same inclined shape as described above, and the movement regulating projection 18b and the movement regulating recess 19b are formed. Although provided, it has a curved shape from the inner diameter side to the outer diameter side. This shape
When the seal is removed for cleaning, it is characterized by its curved surface, which makes it easy to clean.

【0107】したがって、図8(A)から図8(C)に
亘って、先に説明した図7(A)から図7(C)に亘る
作用とほとんど同一の作用をなす。すなわち、配管2と
結合金具本体1内に正圧あるいは負圧がかかっても、シ
ール性が確保される一方で、流体は結合金具本体1内を
円滑に流通する。
Accordingly, the operation from FIG. 8 (A) to FIG. 8 (C) is almost the same as the operation from FIG. 7 (A) to FIG. 7 (C) described above. That is, even when a positive pressure or a negative pressure is applied between the pipe 2 and the inside of the joint body 1, the fluid is smoothly circulated inside the joint body 1 while the sealing property is secured.

【0108】特に、負圧状態でシール部材4Fは内径方
向へ移動するよう付勢されるが、移動規制用突部18b
と移動規制用凹部19bとで、シール部材4Fの内径方
向の位置ズレが確実に規制される。
In particular, the seal member 4F is urged to move in the inner diameter direction in a negative pressure state.
The displacement in the inner diameter direction of the seal member 4F is reliably restricted by the and the movement restricting recess 19b.

【0109】図9は、第7の実施の形態のシール面円筒
体3Gと、このシール面円筒体3Gに取付けられるシー
ル部材4Gとを示している。
FIG. 9 shows a seal face cylindrical body 3G according to the seventh embodiment and a seal member 4G attached to the seal face cylindrical body 3G.

【0110】上記第1の実施の形態と同一部位について
は同番号を付していて、ここでは、第5の実施の形態と
同様、負圧がかかった状態でシール部材4Gの内径側へ
の位置ズレを規制することを特徴としている。
The same parts as those in the first embodiment are denoted by the same reference numerals, and here, similarly to the fifth embodiment, when the negative pressure is applied to the inner side of the seal member 4G. It is characterized in that displacement is regulated.

【0111】すなわち、シール部材4Gの一端面4aと
取付用凹部15の底面15aは、基本的には先に説明し
た傾斜形状と同様とし、かつこれらの内径側から外径側
に亘る中間部に、移動規制用突部18cと移動規制用凹
部19cを備えているしたがって、図9(A)から図9
(C)に亘って、先に説明した図7(A)から図7
(C)に亘る作用とほとんど同一の作用をなす。すなわ
ち、配管2と結合金具本体1内に正圧あるいは負圧がか
かっても、シール性が確保される一方で、流体は結合金
具本体1内を円滑に流通する。
That is, the one end face 4a of the sealing member 4G and the bottom face 15a of the mounting concave portion 15 are basically the same as the inclined shape described above, and are provided at the intermediate portion extending from the inner diameter side to the outer diameter side. 9A and 9B are provided with the movement restricting projection 18c and the movement restricting recess 19c.
7 (A) to FIG. 7 described above over (C).
It has almost the same operation as the operation over (C). That is, even when a positive pressure or a negative pressure is applied between the pipe 2 and the inside of the joint body 1, the fluid is smoothly circulated inside the joint body 1 while the sealing property is secured.

【0112】特に、負圧状態でシール部材4Gは内径方
向へ移動するよう付勢されるが、移動規制用突部18c
と移動規制用凹部19cとで、シール部材4Gの内径方
向の位置ズレが確実に規制される。
In particular, the seal member 4G is urged to move in the inner diameter direction in a negative pressure state.
The displacement of the seal member 4G in the inner diameter direction is reliably restricted by the movement restricting recess 19c.

【0113】[0113]

【発明の効果】以上説明したように本発明によれば、結
合金具本体相互をワンタッチで結合着脱でき作業性の向
上を得られ、かつ結合状態でシール性を確保して高い信
頼性が得られ、配管内部に流通する流体の液溜まりの発
生する余地が全くなく、適用範囲の大幅な拡大が得られ
るなどの効果を奏する。
As described above, according to the present invention, the connecting metal members can be connected and detached by one-touch operation, so that the workability can be improved, and the sealing performance can be ensured in the connected state, and high reliability can be obtained. In addition, there is no room for a liquid pool to be generated in the fluid flowing inside the pipe, so that an effect that the application range is greatly expanded can be obtained.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施の形態の、配管類の結合金具を分
離して示す側面図と断面図。
FIG. 1 is a side view and a cross-sectional view showing a pipe joint according to an embodiment of the present invention separately.

【図2】同実施の形態の、付勢機構を説明する結合金具
本体の一部断面図。
FIG. 2 is a partial cross-sectional view of the fitting body for explaining the urging mechanism of the embodiment.

【図3】第1の実施の形態の、シール部材のシール構造
を説明する断面図。
FIG. 3 is a cross-sectional view illustrating a seal structure of a seal member according to the first embodiment.

【図4】第2の実施の形態の、シール部材のシール構造
を説明する断面図。
FIG. 4 is a cross-sectional view illustrating a seal structure of a seal member according to a second embodiment.

【図5】第3の実施の形態の、シール部材のシール構造
を説明する断面図。
FIG. 5 is a cross-sectional view illustrating a seal structure of a seal member according to a third embodiment.

【図6】第4の実施の形態の、シール部材のシール構造
を説明する断面図。
FIG. 6 is a cross-sectional view illustrating a seal structure of a seal member according to a fourth embodiment.

【図7】第5の実施の形態の、シール部材のシール構造
を説明する断面図。
FIG. 7 is a cross-sectional view illustrating a seal structure of a seal member according to a fifth embodiment.

【図8】第6の実施の形態の、シール部材のシール構造
を説明する断面図。
FIG. 8 is a cross-sectional view illustrating a seal structure of a seal member according to a sixth embodiment.

【図9】第7の実施の形態の、シール部材のシール構造
を説明する断面図。
FIG. 9 is a cross-sectional view illustrating a seal structure of a seal member according to a seventh embodiment.

【図10】従来の、互いに異なるシール部材と、シール
構造を説明する断面図。
FIG. 10 is a cross-sectional view illustrating a conventional sealing member and a sealing structure that are different from each other.

【符号の説明】[Explanation of symbols]

1…結合金具本体、 2…配管、 5…嵌合突部、 6…嵌合凹部、 7…係止鉤部、 8…付勢機構、 4…シール部材、 5…取付用凹部、 15c…係止突起、 16…係止凹部、 17A…負圧シール部、 18a…移動規制用突部、 19a…移動規制用凹部。 DESCRIPTION OF SYMBOLS 1 ... Connection metal fittings, 2 ... Piping, 5 ... Fitting protrusion, 6 ... Fitting concave part, 7 ... Locking hook part, 8 ... Urging mechanism, 4 ... Seal member, 5 ... Mounting concave part, 15c ... Stop projection, 16: locking concave portion, 17A: negative pressure seal portion, 18a: projection for regulating movement, 19a: concave portion for regulating movement.

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】一対の結合金具本体が配管端部、もしくは
配管要素に一体に接続され、 各結合金具本体の周端部に沿い所定間隔を存して軸方向
に突出する複数の嵌合突部が設けられて、これら嵌合突
部相互間に嵌合凹部が形成され、 上記嵌合突部の一方の側面に周方向に突出する係止鉤部
が設けられ、他方の側面に周方向に弾性力を付勢する付
勢機構が設けられ、 上記結合金具本体の前端面に弾性材料からなるシール部
材が取付けられ、 上記結合金具本体相互における係止鉤部相互の係合と、
付勢機構の弾性付勢力をもって結合金具本体相互を着脱
自在に結合し、この結合により上記シール部材相互が当
接してシールを維持する配管類の結合金具において、 上記シール部材は、上記結合金具本体の前端面に設けら
れる取付用凹部に取付けられ、 上記シール部材は、所定の内径と外径とを有するリング
状をなし、その一端面と外径面が上記取付用凹部の底面
と周面に嵌め込まれ、他端面が結合金具本体前端面から
突出して他方の結合金具本体に取付けられるシール部材
に密接シールをなし、 上記シール部材の突出端面は、その突出量が外径側より
も内径側が大になるよう傾斜形成され、 上記シール部材の一端面と結合金具本体の取付用凹部底
面は、互いに、その突出量が外径側よりも内径側が小に
なるよう傾斜形成されることを特徴とする配管類の結合
金具。
1. A plurality of fitting projections, wherein a pair of connecting metal bodies are integrally connected to a pipe end or a pipe element, and project axially at predetermined intervals along a peripheral end of each connecting metal body. A fitting recess is formed between the fitting protrusions, a locking hook projecting in the circumferential direction is provided on one side surface of the fitting protrusion, and the engaging hook portion is provided on the other side surface in the circumferential direction. An urging mechanism for urging an elastic force is provided, a seal member made of an elastic material is attached to a front end surface of the coupling metal body, engagement of the locking hooks in the coupling metal bodies,
A coupling fitting for piping that removably couples coupling fitting bodies with an elastic urging force of an urging mechanism, and the sealing members abut each other by this coupling to maintain a seal. The sealing member includes the coupling fitting body. The sealing member is formed in a ring shape having a predetermined inner diameter and an outer diameter, and one end surface and an outer diameter surface thereof are formed on the bottom surface and the peripheral surface of the mounting concave portion. The other end face is projected from the front end face of the fitting body to form a close seal with the seal member attached to the other fitting body, and the projecting end face of the seal member has a larger amount of protrusion on the inner diameter side than on the outer diameter side. The one end face of the seal member and the bottom face of the mounting recess of the coupling fitting body are formed so as to be inclined such that the protrusion amount is smaller on the inner diameter side than on the outer diameter side. Fittings for plumbing.
【請求項2】上記シール部材の外径面および、このシー
ル部材外径面と係合する取付用凹部周面に、シール部材
の取付用凹部から軸方向への抜けを防止する係止突起お
よび係止凹部が設けられることを特徴とする請求項1記
載の配管類の結合金具。
2. An outer peripheral surface of the seal member and a peripheral surface of a mounting recess engaging with the outer peripheral surface of the seal member. The fitting for pipes according to claim 1, wherein a locking recess is provided.
【請求項3】上記シール部材に、配管内部が負圧状態に
なったとき互いに密接してシールする負圧シール部が一
体に設けられることを特徴とする請求項1記載の配管類
の結合金具。
3. The fitting for piping according to claim 1, wherein said sealing member is integrally provided with a negative pressure seal portion for sealing tightly to each other when the inside of the pipe is in a negative pressure state. .
【請求項4】上記取付用凹部底面および上記シール部材
一端面に、配管内部が負圧状態になったときシール部材
の内径方向への移動を規制する移動規制用突部および移
動規制用凹部が設けられることを特徴とする請求項1記
載の配管類の結合金具。
4. A movement restricting projection and a movement restricting recess on the bottom surface of the mounting recess and one end surface of the seal member for restricting the movement of the seal member in the inner diameter direction when the inside of the pipe is in a negative pressure state. The fitting for pipes according to claim 1, wherein the fitting is provided.
JP2001134577A 2001-05-01 2001-05-01 Pipe fittings Expired - Lifetime JP4602590B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001134577A JP4602590B2 (en) 2001-05-01 2001-05-01 Pipe fittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001134577A JP4602590B2 (en) 2001-05-01 2001-05-01 Pipe fittings

Publications (2)

Publication Number Publication Date
JP2002327884A true JP2002327884A (en) 2002-11-15
JP4602590B2 JP4602590B2 (en) 2010-12-22

Family

ID=18982229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001134577A Expired - Lifetime JP4602590B2 (en) 2001-05-01 2001-05-01 Pipe fittings

Country Status (1)

Country Link
JP (1) JP4602590B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010236644A (en) * 2009-03-31 2010-10-21 Denso Corp Connecting joint and method of manufacturing the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63106990U (en) * 1986-12-26 1988-07-11
JPH09119577A (en) * 1995-10-24 1997-05-06 Sakura Gomme Kk Hose joint

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63106990U (en) * 1986-12-26 1988-07-11
JPH09119577A (en) * 1995-10-24 1997-05-06 Sakura Gomme Kk Hose joint

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010236644A (en) * 2009-03-31 2010-10-21 Denso Corp Connecting joint and method of manufacturing the same

Also Published As

Publication number Publication date
JP4602590B2 (en) 2010-12-22

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