JP4654013B2 - Connection structure between integrated panel and fluidic device - Google Patents

Connection structure between integrated panel and fluidic device Download PDF

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JP4654013B2
JP4654013B2 JP2004351018A JP2004351018A JP4654013B2 JP 4654013 B2 JP4654013 B2 JP 4654013B2 JP 2004351018 A JP2004351018 A JP 2004351018A JP 2004351018 A JP2004351018 A JP 2004351018A JP 4654013 B2 JP4654013 B2 JP 4654013B2
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discharge port
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JP2006161874A (en
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清志 西尾
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Nippon Pillar Packing Co Ltd
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Description

本発明は、集積パネルと流体デバイスとの接続構造に係り、詳しくは、半導体製造や医療・医薬品製造、食品加工、化学工業等の各種技術分野の製造工程で取り扱われる高純度液や超純水、或いは洗浄液の配管系等において今後需要が見込まれる流体用の集積パネルと、ポンプ、バルブ、アキュムレータ等の流体デバイスとをシール状態で連通接続させるための接続構造に関するものである。   The present invention relates to a connection structure between an integrated panel and a fluid device, and more specifically, a high-purity liquid or ultrapure water handled in manufacturing processes in various technical fields such as semiconductor manufacturing, medical / pharmaceutical manufacturing, food processing, chemical industry, and the like. Alternatively, the present invention relates to a connection structure for connecting a fluid integrated panel, which is expected to be demanded in the piping system of cleaning liquid, and a fluid device such as a pump, a valve, and an accumulator in a sealed state.

上記接続構造として、例えば、流体デバイスの一例であるバルブと、流体通路が内部形成された集積パネルとを一対の給排流路どうしを連通させて接続連結するものがあり、特許文献1や特許文献2において開示された接続構造が知られている。特許文献1で開示される接続構造は、一対の給排流路を近接させて配列し、夫々に独立したリング状のガスケットを介して複数のボルトで液密に接続連結させるものであり、特許文献2で開示される接続構造は、一対の給排流路を近接させて配列し、それら一対の給排流路に対応する一対の流路孔を有した単一のガスケットを単一の外ねじナットを用いて接続連結させるものである。   As the above connection structure, for example, there is one in which a valve, which is an example of a fluid device, and an integrated panel in which a fluid passage is formed are connected by connecting a pair of supply / exhaust flow paths to each other. A connection structure disclosed in Document 2 is known. The connection structure disclosed in Patent Document 1 is a structure in which a pair of supply / discharge channels are arranged close to each other, and are connected and connected in a liquid-tight manner with a plurality of bolts via independent ring-shaped gaskets. In the connection structure disclosed in Document 2, a pair of supply / exhaust flow paths are arranged close to each other, and a single gasket having a pair of flow path holes corresponding to the pair of supply / exhaust flow paths is provided as a single outer shell. It is connected and connected using a screw nut.

特許文献1や2に開示されている接続構造は、いずれも多数の流体機器を流体ブロックに集積させて取付ける構造、いわゆる集積配管構造を採るものであり、これは配管系全体のコンパクト化やモジュール化が可能となる点で有用なものである。
特開2001−82609号公報 特開平10−169859号公報
Each of the connection structures disclosed in Patent Documents 1 and 2 adopts a structure in which a large number of fluid devices are integrated and attached to a fluid block, that is, a so-called integrated piping structure. This is useful in that it can be realized.
JP 2001-82609 A Japanese Patent Laid-Open No. 10-169859

上記特許文献1や2に開示された接続構造においては、ガスケットが挟み込まれた一対のフランジ部どうしを所定の面圧に達するまでボルトを締付けることにより、有効なシール性能を出すようになる。しかしながら、ボルトの締付け力が時間と共に低下することは避けられないので、締付け力低下、即ちトルクダウンによる接続部からの漏れを防止するには定期的に増し締めを行う必要があった。ガスケットを用いてシールする場合は非常に高い締付け力が必要になるので、集積パネルや流体デバイスの流体給排口部には高い強度が必要になるとともに、その接続連結するための作業性の点でも不利なものであった。   In the connection structure disclosed in Patent Documents 1 and 2, effective sealing performance is obtained by tightening a bolt between a pair of flange portions sandwiched between gaskets until a predetermined surface pressure is reached. However, since it is inevitable that the bolt tightening force decreases with time, it is necessary to periodically perform additional tightening in order to prevent the tightening force from being reduced, that is, leakage from the connection portion due to torque reduction. When sealing with a gasket, a very high tightening force is required. Therefore, high strength is required for the fluid supply and discharge ports of the integrated panel and fluid device, and workability for connecting and connecting them is also required. But it was disadvantageous.

本発明は、このような実情に鑑みてなされたものであり、その目的とするところは、流体の配管系統における集積パネルと流体デバイスとの接続構造に工夫を凝らすことにより、増し締めを殆ど行わなくても良好なシール性が維持できるとともに、その組付け作業性も改善される集積パネルと流体デバイスとの接続構造を提供することにある。   The present invention has been made in view of such circumstances, and the object of the present invention is to perform additional tightening by devising a connection structure between the integrated panel and the fluid device in the fluid piping system. It is an object of the present invention to provide a connection structure between an integrated panel and a fluid device, which can maintain a good sealing property even if it is not necessary, and can improve its assembling workability.

請求項1に係る発明は、集積パネルと流体デバイスとの接続構造において、管状の流体通路4が開口する第1流体給排口部1Aを備えた集積パネル1の前記第1流体給排口部1Aと、管状の流体通路4が開口する第2流体給排口部2Aを備えた流体デバイス2の前記第2流体給排口部2Aとを、前記流体通路4,4どうしをシールする状態で連通接続するにあたり、
前記第1流体給排口部1A及び前記第2流体給排口部2Aの各端面には、前記各流体通路4が互いに正対する状態で開口され、前記第1流体給排口部1Aと前記第2流体給排口部2Aのいずれか一方には、その端面における前記流体通路4の外径側部分に環状溝6が形成され、前記第1流体給排口部1Aと前記第2流体給排口部2Aのいずれか他方には、その端面における前記流体通路4の外径側部分に前記環状溝6に嵌合する環状突起8が形成され、
前記第1流体給排口部1Aと第2流体給排口部2Aとが互いに引寄せられて、前記環状溝6と前記環状突起8とが圧入嵌合されて嵌合シール部3が形成された接合状態を維持する維持手段Mが装備されるとともに、前記第1及び第2流体給排口部1A,2Aが可撓性を有する合成樹脂材で形成され
前記環状溝6により構成される前記第1流体給排口部1A又は第2流体給排口部2Aには、前記環状溝6と前記流体通路4との間において環状の第1接合端部5が形成され、この第1接合端部5の内周面の先端部に先拡がりテーパ状のテーパ内周面5aが形成されるとともに、
前記環状突起8により構成される前記第2流体給排口部2A又は第1流体給排口部1Aには、前記環状突起8と前記流体通路4との間において環状の第2接合端部7が形成され、この第2接合端部7の外周面の先端部に、先窄まりテーパ状で前記テーパ内周面5aに当接するテーパ外周面7aが形成され、
前記接合状態においては前記テーパ内周面5aと前記テーパ外周面7aとが圧接されるように構成され、
前記第2接合端部7と前記環状突起8との間は、前記流体通路の軸心P方向において先拡がりする環状の谷部分となっており、この谷部分に前記第1接合端部5の先端部が嵌り込み自在に構成され、
前記テーパ内周面5aと前記テーパ外周面7aとが当接している状態では、前記第1流体給排口部1Aの第1外端面1gと前記第2流体給排口部2Aの第2外端面2gとの軸心P方向の間に間隙が存在するように設定されていることを特徴とするものである。
According to the first aspect of the present invention, in the connection structure between the integrated panel and the fluid device, the first fluid supply / discharge port portion of the integrated panel 1 including the first fluid supply / discharge port portion 1A in which the tubular fluid passage 4 opens. 1A and the second fluid supply / discharge port portion 2A of the fluid device 2 including the second fluid supply / discharge port portion 2A in which the tubular fluid passage 4 is opened, in a state in which the fluid passages 4, 4 are sealed with each other. In connection with communication,
Each end face of the first fluid supply / exhaust port portion 1A and the second fluid supply / discharge port portion 2A is opened with the fluid passages 4 facing each other, and the first fluid supply / discharge port portion 1A and the In either one of the second fluid supply / exhaust port portions 2A, an annular groove 6 is formed in the outer diameter side portion of the fluid passage 4 on the end face thereof, and the first fluid supply / discharge port portion 1A and the second fluid supply / discharge port portion 2A are formed. An annular protrusion 8 that fits into the annular groove 6 is formed on the outer diameter side portion of the fluid passage 4 on the end surface of either one of the outlet portions 2A.
The first fluid supply / discharge port portion 1A and the second fluid supply / discharge port portion 2A are attracted to each other, and the annular groove 6 and the annular protrusion 8 are press-fitted to form a fitting seal portion 3. And the first and second fluid supply / exhaust ports 1A and 2A are formed of a flexible synthetic resin material .
The first fluid supply / exhaust port portion 1A or the second fluid supply / discharge port portion 2A constituted by the annular groove 6 has an annular first joint end portion 5 between the annular groove 6 and the fluid passage 4. And a tapered inner circumferential surface 5a having a taper shape is formed at the tip of the inner circumferential surface of the first joint end 5;
The second fluid supply / exhaust port portion 2 </ b> A or the first fluid supply / discharge port portion 1 </ b> A configured by the annular protrusion 8 has an annular second joint end 7 between the annular protrusion 8 and the fluid passage 4. A tapered outer peripheral surface 7a that is tapered and comes into contact with the tapered inner peripheral surface 5a is formed at the tip of the outer peripheral surface of the second joint end portion 7,
In the joined state, the tapered inner peripheral surface 5a and the tapered outer peripheral surface 7a are configured to be in pressure contact with each other,
Between the second joint end portion 7 and the annular protrusion 8 is an annular valley portion that expands in the direction of the axis P of the fluid passage, and the first joint end portion 5 is located in the valley portion. The tip is configured to fit freely,
In a state where the tapered inner peripheral surface 5a and the tapered outer peripheral surface 7a are in contact with each other, the first outer end surface 1g of the first fluid supply / discharge port portion 1A and the second outer surface of the second fluid supply / discharge port portion 2A It is characterized in that it is set so that a gap exists between the end face 2g and the axis P direction .

請求項2に係る発明は、請求項1に記載の集積パネルと流体デバイスとの接続構造において、前記維持手段Mは、前記第1流体給排口部1Aと第2流体給排口部2Aとを引寄せて前記接合状態を得るための引寄せ機能を発揮するものに構成されていることを特徴とするものである。 According to a second aspect of the present invention, in the connection structure between the integrated panel and the fluid device according to the first aspect, the maintaining means M includes the first fluid supply / discharge port portion 1A and the second fluid supply / discharge port portion 2A. It is comprised so that the drawing function for exhibiting the said joining state by pulling out may be exhibited .

請求項3に係る発明は、請求項2に記載の集積パネルと流体デバイスとの接続構造において、前記維持手段Mが、前記第1流体給排口部1Aと第2流体給排口部2Aのいずれか一方の外周部に形成された雄ネジ部1nに螺合自在な雌ネジ部21nを備えた筒状ナット21と、前記第1流体給排口部1Aと第2流体給排口部2Aのいずれか他方の端部に形成された外向きフランジ2bに前記流体通路4の軸心方向で干渉するよう前記第1流体給排口部1Aと第2流体給排口部2Aのいずれか他方の前記外向きフランジ2bに続く管状部2aに外嵌される割型リング25とから成り、
前記筒状ナット21の一端部には、前記外向きフランジ2bの通過は許容し、かつ、前記割型リング25とは前記軸心方向で干渉する開口部24aを有する内向きフランジ24が形成されており、
前記筒状ナット21の前記雄ネジ部1nへの締付け操作によって、前記第1流体給排口部1Aと第2流体給排口部2Aとが互いに引寄せられるように構成されていることを特徴とするものである。
According to a third aspect of the present invention, in the connection structure between the integrated panel and the fluid device according to the second aspect , the maintaining means M includes a first fluid supply / discharge port portion 1A and a second fluid supply / discharge port portion 2A. A cylindrical nut 21 having a female screw portion 21n that can be screwed into a male screw portion 1n formed on one of the outer peripheral portions, the first fluid supply / discharge port portion 1A, and the second fluid supply / discharge port portion 2A. The other one of the first fluid supply / exhaust port portion 1A and the second fluid supply / discharge port portion 2A so as to interfere with the outward flange 2b formed at the other end portion in the axial direction of the fluid passage 4 A split ring 25 fitted on the tubular portion 2a following the outward flange 2b.
An inward flange 24 having an opening 24a that allows passage of the outward flange 2b and interferes with the split ring 25 in the axial direction is formed at one end of the cylindrical nut 21. And
The first fluid supply / exhaust port portion 1A and the second fluid supply / exhaust port portion 2A are configured to be pulled toward each other by a tightening operation of the cylindrical nut 21 to the male screw portion 1n. It is what.

請求項4に係る発明は、請求項3に記載の集積パネルと流体デバイスとの接続構造において、下記(イ)、(ロ)のうちの少なくとも一方の構成を備えていることを特徴とするものである。
(イ)前記筒状ナット21の、前記内向きフランジ24に隣接する割型リング内嵌部分の内周面部21mが、前記管状の流体通路4と同心にフラットな内周面に形成され、かつ、その内周面部21mの内径と、断面矩形に形成された前記割型リング25の外径とがほぼ同一径に形成されている。
(ロ)前記割型リング25の外嵌された前記管状部2aの外径部2kが、前記管状の流体通路4と同心にフラットな外周面に形成され、かつ、その外径部2kの外径と、前記割型リング25の内径とがほぼ同一径に形成されている。
The invention according to claim 4 is characterized in that in the connection structure between the integrated panel and the fluid device according to claim 3, at least one of the following (a) and (b) is provided. It is.
(A) An inner peripheral surface portion 21m of the split ring inner fitting portion adjacent to the inward flange 24 of the cylindrical nut 21 is formed on a flat inner peripheral surface concentrically with the tubular fluid passage 4; The inner diameter of the inner peripheral surface portion 21m and the outer diameter of the split ring 25 formed in a rectangular cross section are formed to have substantially the same diameter.
(B) The outer diameter portion 2k of the tubular portion 2a on which the split ring 25 is fitted is formed on a flat outer peripheral surface concentrically with the tubular fluid passage 4, and the outside of the outer diameter portion 2k. The diameter and the inner diameter of the split ring 25 are formed to have substantially the same diameter.

請求項5に係る発明は、請求項2に記載の集積パネルと流体デバイスとの接続構造において、前記維持手段Mが、前記第1流体給排口部1Aと第2流体給排口部2Aとの少なくともいずれか一方の端部に形成された外向きフランジ2Aと、この外向きフランジ2Aに形成される貫通孔2hと、この貫通孔2hを通して前記第1流体給排口部1Aと第2流体給排口部2Aとのいずれか他方に設けられたナット部42に螺着されるボルト41とを有して構成されており、
前記ボルト41を前記ナット部42に螺着させて締付けることにより、前記第1流体給排口部1Aと第2流体給排口部2Aとが互いに引寄せられるように構成されていることを特徴とするものである。
According to a fifth aspect of the present invention, in the connection structure between the integrated panel and the fluid device according to the second aspect , the maintaining means M includes the first fluid supply / discharge port portion 1A and the second fluid supply / discharge port portion 2A. The outward flange 2A formed at at least one of the end portions, the through hole 2h formed in the outward flange 2A, and the first fluid supply / exhaust port portion 1A and the second fluid through the through hole 2h A bolt 41 that is screwed into a nut portion 42 provided on the other side of the supply / exhaust port portion 2A;
The first fluid supply / exhaust port portion 1A and the second fluid supply / exhaust port portion 2A are configured to be attracted to each other by screwing and tightening the bolt 41 to the nut portion 42. It is what.

請求項6に係る発明は、請求項1〜6の何れか一項に記載の集積パネルと流体デバイスとの接続構造において、前記第1及び第2流体給排口部1A,2Aがフッ素樹脂によって形成されていることを特徴とするものである。 The invention according to claim 6 is the connection structure between the integrated panel and the fluid device according to any one of claims 1 to 6 , wherein the first and second fluid supply / exhaust ports 1A and 2A are made of fluororesin. It is characterized by being formed .

請求項1の発明によれば、集積パネルの第1流体給排口部と流体デバイスの第2流体給排口部とにより、環状溝と環状突起とが各流体通路の軸心方向に沿って嵌め込まれることによる嵌合シール部が形成されるから、この嵌合シール部の存在により、両流体給排口部どうしを互いに強く押し合わなくても優れたシール作用が発揮されるようになる。従って、両流体給排口部どうしを接合状態に維持するための維持手段は、各流体給排口部どうしを嵌合させるにあたり、従来のような高い圧力で押し付けあう必要はなく、接合状態を維持するに足りる程度の押し付け力が生じるようにすれば足りるとともに、強い締付けによる各流体給排口部の変形も生じないので、各流体給排口部の流体通路どうしが凹凸なく一定の径のものとして、液溜りが生じないようにすることも可能になる。その結果、環状溝と環状突起とを径方向に圧接する構造により、維持手段の経時変化に伴うトルクダウンが少なくなって、増し締めが不要或いは殆ど行わなくても良いものとなり、長期に亘って良好なシール性能が維持できるとともに、組付け作業性が改善され、かつ、ガスケットが無い分のコストダウンも図れる集積パネルと流体デバイスとの接続構造を提供することができる。   According to the first aspect of the present invention, the annular groove and the annular protrusion are formed along the axial direction of each fluid passage by the first fluid supply / discharge port portion of the integrated panel and the second fluid supply / discharge port portion of the fluid device. Since the fitting seal portion is formed by fitting, the presence of this fitting seal portion provides an excellent sealing action even if the fluid supply / exhaust port portions are not strongly pressed against each other. Therefore, the maintaining means for maintaining the fluid supply / discharge port portions in the joined state does not need to be pressed at a high pressure as in the prior art when fitting the fluid supply / exhaust port portions. It is sufficient to generate a pressing force sufficient to maintain the pressure, and deformation of each fluid supply / exhaust portion due to strong tightening will not occur. As a matter of fact, it is possible to prevent the liquid from being accumulated. As a result, due to the structure in which the annular groove and the annular protrusion are pressed in the radial direction, the torque down associated with the aging of the maintaining means is reduced, and additional tightening is unnecessary or almost not required. It is possible to provide a connection structure between an integrated panel and a fluid device that can maintain good sealing performance, improve workability of assembly, and reduce the cost because there is no gasket.

第1、2流体給排口部に振り分けられて形成された環状溝と環状突起とが互いに嵌り合って嵌合シール部を形成するので、第1、2流体給排口部間からの液漏れを阻止できて優れたシール性を得ることが可能になる。例えば、半導体製造設備における洗浄装置の配管系統にこのような接続構造を用いれば、良好なシール性を確保し得ながら装置の占有面積を減少できてコスト上有利であるとともに、大流路が確保されることによって循環流量を多くし、薬液の高純度化を高めて歩留まり向上に寄与できるという効果を奏する。そして、維持手段によって両流体給排口部どうしは互いに接近すべく引寄せられた接近状態を維持できるので、集積パネルと流体デバイスとが液漏れなく良好なシール性を確保し得る状態を長期に亘って維持可能となり、信頼性に優れる集積パネルと流体デバイスとの接続構造を提供することができる。   Since the annular groove and the annular projection formed by being distributed to the first and second fluid supply / exhaust portions fit together to form a fitting seal portion, liquid leakage from between the first and second fluid supply / exhaust portions Can be prevented and excellent sealing performance can be obtained. For example, if such a connection structure is used in the piping system of a cleaning device in a semiconductor manufacturing facility, the area occupied by the device can be reduced while ensuring good sealing performance, and a large flow path is secured. As a result, the circulation flow rate is increased, and the high purity of the chemical solution can be enhanced to contribute to the yield improvement. And since both the fluid supply / discharge ports can be kept close to each other by the maintenance means, the integrated panel and the fluid device can maintain a good sealing property without liquid leakage for a long time. Therefore, it is possible to provide a connection structure between an integrated panel and a fluid device that can be maintained for a long time and has excellent reliability.

請求項1の発明によれば、嵌合シール部が形成される接合状態においては、第1流体給排口部と第2流体給排口部とのいずれか一方の環状溝と、いずれか他方の環状突起との嵌合部分の内径側に、第1接合端部5のテーパ内周面と第2接合端部のテーパ外周面とが圧接される構成が存在しており、それによってよりシール性に優れるとともに液溜り箇所がなく高純度化が促進できるシール部が構成されるに加えて、次のような効果を得ることができる。即ち、詳しくは実施例において述べるが、環状溝の内径側部分の剛性が不足するような場合には、環状突起の環状溝への嵌合に伴い、環状突起状の第1接合端部5が内径側に傾き変形するおそれがある。しかしながら、その傾き変形しようとする第1接合端部を内径側から第2接合端部が支える構成となっており、第1接合端部の剛性不足を補ってその内径側への傾き変形を阻止でき、それによって液溜りの生じない流体通路を確保することができる。 According to the first aspect of the present invention, in the joined state in which the fitting seal portion is formed, either one of the first fluid supply / discharge port portion and the second fluid supply / discharge port portion and the other There is a configuration in which the tapered inner peripheral surface of the first joint end portion 5 and the tapered outer peripheral surface of the second joint end portion are in pressure contact with each other on the inner diameter side of the fitting portion with the annular protrusion. In addition to the construction of a seal portion that is excellent in properties and has no liquid reservoir location and can promote high purity, the following effects can be obtained. That is, as will be described in detail in the embodiment, when the rigidity of the inner diameter side portion of the annular groove is insufficient, the annular projection-like first joining end portion 5 is formed along with the fitting of the annular projection to the annular groove. There is a risk of tilting deformation toward the inner diameter side. However, the second joint end supports the first joint end to be inclined and deformed from the inner diameter side, and compensates for the lack of rigidity of the first joint end to prevent the tilt deformation toward the inner diameter. Thus, it is possible to secure a fluid passage in which no liquid pool is generated.

請求項2の発明によれば、維持手段は第1流体給排口部と第2流体給排口部との接合状態を維持するだけでなく、第1流体給排口部と第2流体給排口部とを引寄せて接合状態を得るための引寄せ機能も発揮できるので、他に引寄せ手段を用意する必要が無くなり、全体としての組付け手間の省略化やコストダウンが可能となる利点がある。 According to the invention of claim 2 , the maintaining means not only maintains the joined state of the first fluid supply / exhaust port and the second fluid supply / discharge port, but also the first fluid supply / discharge port and the second fluid supply. Since the drawing function for drawing the outlet part to obtain the joined state can also be exhibited, it is not necessary to prepare any other drawing means, and it is possible to reduce the assembly work and the cost as a whole. There are advantages.

請求項3の発明によれば、いずれか一方の流体給排口部の外向きフランジに割型リングを介して係合されている筒状ナットを、いずれか他方の流体給排口部の雄ネジに螺進させるだけの簡単な操作により、環状突起と環状溝とを嵌合させて第1,2流体給排口部どうしを、つまりは集積パネルと流体デバイスとをシール状態で連通接続することができる。そして、筒状ナットの螺進を止めるだけで、その接合状態を維持することができる便利で扱い易い引き寄せ機能付きの維持手段が、コンパクトで場所を取らない合理的なものとして得られる。 According to the invention of claim 3, the cylindrical nut engaged with the outward flange of one of the fluid supply / exhaust port portions via the split ring is used as the male of either one of the fluid supply / exhaust port portions. By simply operating the screw, the annular protrusion and the annular groove are fitted to connect the first and second fluid supply / discharge ports, that is, the integrated panel and the fluid device in a sealed state. be able to. And the maintenance means with an easy-to-handle pulling function that can maintain the joined state by simply stopping the screwing of the cylindrical nut can be obtained as a compact and space-saving rational means.

また、筒状ナットはいずれか一方の流体給排口部に外嵌装着及び離脱が自在であり、外嵌装着状態では割型リングを介していずれか一方の流体給排口部に軸方向で干渉するから、筒状ナットによる第1,2流体給排口部どうしの接続を可能にしながら、割型リング及び筒状ナットをいずれか他方の流体給排口部に後付け装着することが自在である。加えて、少ない部品数で、かつ、少ない部品種として経済的、合理的なものとしながら筒状ナットの締付け力を確実にいずれか他方の流体給排口部に伝達することができる。従って、いずれか他方の流体給排口部の製造時に筒状ナットをその管状部に外嵌装着させておく、という難しい製造手段を採ることなく、筒状ナットを用いて集積パネルと流体デバイスとの接続操作が簡単で便利に行える。   In addition, the cylindrical nut can be freely fitted and removed from either one of the fluid supply / exhaust ports, and in the fitted state, the cylindrical nut can be axially connected to one of the fluid supply / discharge ports via a split ring. Because it interferes, it is possible to attach the split ring and the cylindrical nut to either one of the other fluid supply / exhaust ports while allowing connection between the first and second fluid supply / exhaust ports by the cylindrical nuts. is there. In addition, the tightening force of the cylindrical nut can be reliably transmitted to one of the other fluid supply / exhaust ports while being economical and rational with a small number of parts and a small number of parts. Therefore, without taking the difficult manufacturing means of fitting and fitting the cylindrical nut to the tubular portion at the time of manufacturing the other fluid supply / discharge port portion, Connection operation is easy and convenient.

請求項4の発明によれば、(イ)筒状ナットの内径部の内奥部における内向きフランジに隣接する部分が管状の流体通路と同心にフラットな内周面部に形成され、かつ、その内周面部の内径と、断面矩形に形成された割型リングの外径とがほぼ同一径に形成される構成と、(ロ)割型リングの外嵌された管状部の外径部が、管状部の流体通路と同心にフラットな外周面に形成され、かつ、その外径部の外径と、割型リングの内径とがほぼ同一径に形成される構成との少なくとも一方を有するから、筒状ナットを螺進させた際に割型リングが傾いて抉るような状態になったり、外向きフランジに筒状ナットの螺進による軸心方向の押圧力がうまく伝わらなかったりする、という不具合を軽減することができ、外向きフランジを効果的に押圧できて、両流体給排口部どうしを互いに接近する方向に良好に引寄せることができる利点が得られる。特に、構成(イ)、(ロ)の双方を備えれば上記不具合を防止する上記作用効果がより強化されるようになる。 According to the invention of claim 4 , (a) the portion adjacent to the inward flange in the inner back portion of the inner diameter portion of the cylindrical nut is formed on the flat inner peripheral surface portion concentrically with the tubular fluid passage, and A configuration in which the inner diameter of the inner peripheral surface portion and the outer diameter of the split ring formed in a rectangular cross section are formed to have substantially the same diameter, and (b) the outer diameter portion of the tubular portion on which the split ring is fitted, Because it has at least one of a configuration in which the outer diameter of the outer diameter portion and the inner diameter of the split ring are formed to be substantially the same diameter, which is formed on a flat outer peripheral surface concentrically with the fluid passage of the tubular portion, When the cylindrical nut is screwed, the split ring may be tilted and the axial force due to the screwing of the cylindrical nut may not be transmitted well to the outward flange. Can effectively reduce the outward flange. , The advantage of being able to satisfactorily attracting the direction approaching both fluid supply and discharge port portion with each other to each other is obtained. In particular, if both the configurations (A) and (B) are provided, the above-described operational effect for preventing the above-described problems can be further enhanced.

請求項5の発明によれば、両流体給排口部に形成された孔を通すことで、それら両流体給排口部どうしに亘って挿通されるボルト及びナット部を設けるだけの簡単な手段で引寄せ機能付きの維持手段を構成することができる。つまり、構造簡単で廉価な維持手段としながら種々の利点を有する集積パネルと流体デバイスとの接続構造を得ることができる。 According to the fifth aspect of the present invention, a simple means is provided simply by providing bolts and nuts that are inserted through the fluid supply / exhaust ports by passing through holes formed in the fluid supply / discharge ports. Thus, it is possible to constitute a maintenance means with a drawing function. That is, it is possible to obtain a connection structure between an integrated panel and a fluid device, which has various advantages while being a simple and inexpensive maintenance means.

請求項6の発明によれば、両流体給排口部が耐薬品性及び耐熱性に優れた特性を有するフッ素系樹脂で形成されているので、流体が薬液であるとか化学液体であっても、或いは高温流体であっても嵌合シール部の構造部分が変形して漏れ易くなることがなく、良好なシール性が維持し得る集積パネルと流体デバイスとの接続構造を提供することができる。尚、フッ素系樹脂は、水素原子の一個以上をフッ素で置換したエチレンおよびその誘導体の重合によって得られる樹脂状物質であり、高温にも安定で、撥水性に優れる。また摩擦係数が小さく、耐薬品性もきわめて高く、電気絶縁性も高い点で好ましい。 According to the invention of claim 6 , since both the fluid supply / exhaust ports are formed of a fluorine-based resin having excellent chemical resistance and heat resistance, even if the fluid is a chemical liquid or a chemical liquid Alternatively, even if it is a high-temperature fluid, the structure portion of the fitting seal portion is not easily deformed and leaks easily, and a connection structure between the integrated panel and the fluid device that can maintain good sealing performance can be provided. The fluororesin is a resinous substance obtained by polymerization of ethylene and derivatives thereof in which one or more hydrogen atoms are substituted with fluorine, and is stable at high temperatures and excellent in water repellency. Further, it is preferable in that it has a small coefficient of friction, extremely high chemical resistance, and high electrical insulation.

以下、本発明による集積パネルと流体デバイスとの接続構造の好適な実施形態を、図面を参照しながら説明する。図1〜図4は、実施例1による集積パネルとバルブとの接続構造等を示す図であり、図5,6は、実施例2による集積パネルとフランジ配管との接続構造等を示す図である。また、図7,8は、実施例3による集積パネルとフランジ配管との接続構造等を示す図である。   Hereinafter, preferred embodiments of a connection structure between an integrated panel and a fluid device according to the present invention will be described with reference to the drawings. 1-4 is a figure which shows the connection structure of the integrated panel and valve | bulb by Example 1, etc., FIG.5, 6 is a figure which shows the connection structure of the integrated panel and flange piping by Example 2, etc. FIG. is there. 7 and 8 are diagrams showing a connection structure between the integrated panel and the flange pipe according to the third embodiment.

〔実施例1〕
実施例1による集積パネルと流体デバイスとの接続構造は、図1に示すように、集積パネル1と手動式ストップバルブ(流体デバイスの一例)2との接続部に構成されている。即ち、軸心Pを有する管状の流体通路4が開口する第1流体給排口部1Aを備えた集積パネル1の第1流体給排口部1Aと、軸心Pを有する管状の流体通路4が開口する第2流体給排口部2Aを備えた手動式ストップバルブ2の第2流体給排口部2Aとを、それぞれの流体通路4,4どうしをシールする状態でダイレクトに連通接続する接続構造である。
[Example 1]
As shown in FIG. 1, the connection structure between the integrated panel and the fluid device according to the first embodiment is configured at a connection portion between the integrated panel 1 and a manual stop valve (an example of a fluid device) 2. That is, the first fluid supply / discharge port portion 1A of the integrated panel 1 including the first fluid supply / discharge port portion 1A in which the tubular fluid passage 4 having the axis P is opened, and the tubular fluid passage 4 having the axis P. The second fluid supply / discharge port portion 2A of the manual stop valve 2 having the second fluid supply / discharge port portion 2A that opens is connected directly to the fluid passages 4 and 4 in a sealed state. Structure.

種々の流体デバイスが接続されるターミナル的な部材である集積パネル1は、図1、図2に示すように、PFAやPTFE等のフッ素樹脂製のパネル材(又はブロック材)1Hの内部に種々の流体通路(図示省略)が形成されているものであり、そのうちの一つが側面1aに開口する横向きの流体通路4である。また、手動式ストップバルブ2は、図1、図2に示すように、バルブ本体2hと、回動操作部2Kと、供給側(IN側)と排出(OUT側)との一対の流体給排口部2A,2B等を有して構成された公知のものである。第2流体給排口部2Aは、管状部2aと、その先端に形成されるフランジ部2bとを有して形成されている。   As shown in FIGS. 1 and 2, the integrated panel 1 that is a terminal member to which various fluidic devices are connected is variously provided inside a panel material (or block material) 1H made of fluororesin such as PFA or PTFE. Fluid passages (not shown) are formed, and one of them is a lateral fluid passage 4 that opens to the side surface 1a. Further, as shown in FIGS. 1 and 2, the manual stop valve 2 has a pair of fluid supply / discharge of a valve body 2h, a rotation operation unit 2K, a supply side (IN side), and a discharge (OUT side). It is a well-known thing comprised with mouth part 2A, 2B. The second fluid supply / exhaust port portion 2A has a tubular portion 2a and a flange portion 2b formed at the tip thereof.

実施例1においては、第1流体給排口部1Aと第2流体給排口部2Aとは互いに共通の軸心Pを有しており、図2に示すように、第1流体給排口部1Aには、その端面に開口する流体通路4の外径側部分に形成された環状溝6を有する第1シール端部t1が構成されている。第2流体給排口部2Aには、その端面に開口する流体通路4の外径側部分に、環状溝6に嵌合するよう突出形成された環状突起8を有する第2シール端部t2が構成されている。第1流体給排口部1Aの流体通路4の径d1と、第2流体給排口部2Aの流体通路4の径d2とは互いに同じ径(d1=d2)に形成されている。そして、第1流体給排口部1Aと第2流体給排口部2Aとに亘って、環状溝6と環状突起8とが互いに嵌め合わされて嵌合シール部3を形成するよう、第1流体給排口部1Aと第2流体給排口部2Aとを互いに引寄せるとともに、この引寄せ状態を維持する引寄せ手段機能付の維持手段Mを備えている。   In the first embodiment, the first fluid supply / exhaust port portion 1A and the second fluid supply / discharge port portion 2A have a common axis P, and as shown in FIG. The part 1A is configured with a first seal end t1 having an annular groove 6 formed in an outer diameter side portion of the fluid passage 4 that opens to the end face thereof. The second fluid supply / exhaust port portion 2A has a second seal end portion t2 having an annular projection 8 formed so as to protrude into the annular groove 6 on the outer diameter side portion of the fluid passage 4 that opens to the end surface thereof. It is configured. The diameter d1 of the fluid passage 4 of the first fluid supply / discharge port portion 1A and the diameter d2 of the fluid passage 4 of the second fluid supply / discharge port portion 2A are formed to have the same diameter (d1 = d2). Then, the first fluid is formed so that the annular groove 6 and the annular protrusion 8 are fitted to each other over the first fluid supply / discharge port portion 1A and the second fluid supply / discharge port portion 2A to form the fitting seal portion 3. The supply / discharge port portion 1A and the second fluid supply / discharge port portion 2A are attracted to each other, and a maintaining means M having an attracting means function for maintaining the attracted state is provided.

集積パネル1の第1シール端部t1は、第1流体給排口部1Aの端面における流体通路4の外径側部分に、流体通路4と同心で、かつ、軸心P方向に開放される状態で形状された環状溝6により構成される。また第1シール端部t1は、環状溝6の内周面6aと流体通路4との間に形成される環状の突起である第1接合端部5を有しており、その先端内周側には先拡がりテーパ状のテーパ内周面5aが形成されている。環状溝6は、流体通路4から外径側に比較的近い位置において流体通路4の軸心P方向に深い断面矩形を呈する形状に形成されており、その内周面6aは第1接合端部5の外周面を兼ねている。   The first seal end t1 of the integrated panel 1 is open to the outer diameter side portion of the fluid passage 4 on the end face of the first fluid supply / exhaust port 1A, concentric with the fluid passage 4 and in the axis P direction. It is comprised by the annular groove 6 shape | molded in the state. The first seal end t1 has a first joint end 5 which is an annular protrusion formed between the inner peripheral surface 6a of the annular groove 6 and the fluid passage 4, and the tip inner peripheral side thereof. Is formed with a taper inner peripheral surface 5a having a tapered shape. The annular groove 6 is formed in a shape having a deep cross-sectional rectangle in the direction of the axis P of the fluid passage 4 at a position relatively close to the outer diameter side from the fluid passage 4, and an inner peripheral surface 6a thereof is a first joint end portion. 5 also serves as an outer peripheral surface.

手動式ストップバルブ2の第2シール端部t2は、第2流体給排口部2Aの端面における流体通路4の外径側部分に、流体通路4と同心で、かつ、環状溝6に圧入嵌合するよう一体に突出形成された環状突起8により構成される。また第2シール端部t2は、環状突起8と流体通路4との間に形成される環状の第2接合端部7を有しており、その先端外周面には、テーパ内周面5aに当接する先窄まりテーパ状のテーパ外周面7aが形成されている。環状突起8は、流体通路4の軸心P方向に長い断面矩形を呈する形状に形成されており、その突出長さは環状溝6の深さよりも若干短い寸法に設定されている。第2接合端部7と環状突起8との間は、軸心P方向において先拡がりする環状の谷部分となっており、この谷部分に第1接合端部5の先端部が嵌り込み自在に構成されている。   The second seal end t2 of the manual stop valve 2 is concentric with the fluid passage 4 and press-fitted into the annular groove 6 on the outer diameter side portion of the fluid passage 4 on the end surface of the second fluid supply / discharge port portion 2A. It is comprised by the annular protrusion 8 integrally formed so as to fit. The second seal end t2 has an annular second joint end 7 formed between the annular protrusion 8 and the fluid passage 4, and the tip outer peripheral surface thereof has a tapered inner peripheral surface 5a. A tapered outer peripheral surface 7a having a tapered shape is formed. The annular protrusion 8 is formed in a shape having a long cross-sectional rectangle in the direction of the axis P of the fluid passage 4, and the protruding length is set to be slightly shorter than the depth of the annular groove 6. Between the 2nd junction end part 7 and the cyclic | annular protrusion 8, it is the cyclic | annular trough part which expands in the axial center P direction, and the front-end | tip part of the 1st junction end part 5 can be freely inserted in this trough part. It is configured.

図2、図4に示すように、環状突起8の自由状態における厚み、即ち径方向寸法が環状溝6の自由状態における溝幅、即ち径方向寸法を上回る値に設定されており、維持手段Mによって環状溝6と環状突起8とが互いに嵌合して形成される嵌合シール部3は、環状溝6の内周面6a及び外周面6bの双方と環状突起8とが径方向で圧接される一次及び二次シール部S1,S2により構成される。この場合、嵌合シール部3としては、一次及び二次シール部S1,S2の両方が形成されることがシール性を高める点で好ましいが、一次シール部S1のみ、又は二次シール部S2のみが形成されるものでも良い。   As shown in FIGS. 2 and 4, the thickness of the annular protrusion 8 in the free state, that is, the radial dimension is set to a value that exceeds the groove width in the free state of the annular groove 6, that is, the radial dimension. In the fitting seal portion 3 formed by fitting the annular groove 6 and the annular protrusion 8 to each other, both the inner peripheral surface 6a and the outer peripheral surface 6b of the annular groove 6 and the annular protrusion 8 are pressed in the radial direction. Primary and secondary seal portions S1 and S2. In this case, as the fitting seal portion 3, it is preferable to form both the primary and secondary seal portions S1 and S2 in terms of enhancing the sealing performance, but only the primary seal portion S1 or only the secondary seal portion S2. May be formed.

維持手段Mによって両流体給排口部1A,2Aが互いに接近する方向に引寄せられて行くと、まず、環状溝6と環状突起8とが嵌合し、その大部分が嵌合してからテーパ内周面5aとテーパ外周面7aとが当接するようになる。そして、これらテーパ内周面5aとテーパ外周面7aとが強く圧接して、第1流体給排口部1Aと第2流体給排口部2Aとの接近移動が止まった状態では、環状溝6と環状突起8との軸心P方向の間、及び第1流体給排口部1Aの端面の環状溝6より外径側の部分である第1外端面1gと、第2流体給排口部2Aの端面の環状突起8より外径側の部分である第2外端面2gとの軸心P方向の間の夫々には、それぞれ間隙が存在するように設定されている。これにより、環状溝6と環状突起8との嵌合による嵌合シール部3の一次及び二次シール部S1,S2の有効なシール機能が得られるとともに、テーパ内周面5aとテーパ外周面7aとの圧接によって形成される三次シール部S3により、互いに同径の両流体通路4,4間に液溜り無くクリーンな状態で液体を流すことができる。   When the fluid supply / discharge port portions 1A and 2A are drawn toward each other by the maintaining means M, the annular groove 6 and the annular protrusion 8 are first fitted, and most of them are fitted. The taper inner peripheral surface 5a and the taper outer peripheral surface 7a come into contact with each other. When the tapered inner peripheral surface 5a and the tapered outer peripheral surface 7a are in strong pressure contact with each other and the approaching movement between the first fluid supply / discharge port portion 1A and the second fluid supply / discharge port portion 2A stops, the annular groove 6 A first outer end face 1g which is a part on the outer diameter side from the annular groove 6 on the end face of the first fluid supply / exhaust port portion 1A, and the second fluid supply / exhaust port portion. A gap is set between each of the 2A end faces between the second outer end face 2g, which is a part on the outer diameter side of the annular protrusion 8 on the end face, in the direction of the axis P. Thus, an effective sealing function of the primary and secondary seal portions S1 and S2 by fitting the annular groove 6 and the annular protrusion 8 is obtained, and the tapered inner peripheral surface 5a and the tapered outer peripheral surface 7a are obtained. By the tertiary seal portion S3 formed by pressure contact with the liquid, the liquid can flow in a clean state without liquid accumulation between the fluid passages 4 and 4 having the same diameter.

維持手段Mの具体例としては、例えば、図2及び図3に示すように、集積パネル1の第1流体給排口部1Aの外周部に形成された雄ネジ1nに螺合自在な雌ネジ21nを備えた筒状ナット21と、手動式ストップバルブ2のフランジ状の第2流体給排口部2Aにこれの軸心P方向で干渉する二つ割り、または三つ割り以上の割型リング25とから構成される。割型リング25が第2流体給排口部2Aの管状部2aに外嵌装備され、かつ、筒状ナット21に内嵌合されている状態として、筒状ナット21を軸心方向に移動させてその雌ネジ21nを雄ネジ1nに螺合させて締付け操作することにより、第1及び第2流体給排口部1A,2Aどうしを互いに接近する方向に引寄せ、かつ、その引寄せ状態を維持することができる。   As a specific example of the maintaining means M, for example, as shown in FIGS. 2 and 3, a female screw that can be screwed into a male screw 1 n formed on the outer peripheral portion of the first fluid supply / discharge port portion 1 </ b> A of the integrated panel 1. A cylindrical nut 21 provided with 21n, and a split ring 25 having two or more split rings that interfere with the flange-like second fluid supply / discharge port portion 2A of the manual stop valve 2 in the direction of the axis P thereof; Consists of Assuming that the split ring 25 is fitted on the tubular portion 2a of the second fluid supply / exhaust port portion 2A and is fitted inside the tubular nut 21, the tubular nut 21 is moved in the axial direction. By pulling the female screw 21n into the male screw 1n and tightening, the first and second fluid supply / exhaust port portions 1A and 2A are drawn toward each other, and the drawing state is changed. Can be maintained.

筒状ナット21の内向きフランジ24の開口部24aは、フランジ部2bの通過を許容するに足りる最小限の内径寸法に設定されており、割型リング25の外径は、筒状ナット21に入り込み自在となるよう雌ネジ21n及びこれに連なる内径部21aの内径よりも若干小さい寸法に設定され、かつ、内径は、管状部2aに外嵌自在となる最小限の寸法に設定されている。   The opening 24 a of the inward flange 24 of the cylindrical nut 21 is set to a minimum inner diameter dimension sufficient to allow passage of the flange portion 2 b, and the outer diameter of the split ring 25 is set to the cylindrical nut 21. The inner screw 21n and the inner diameter portion 21a connected to the inner screw 21n and the inner diameter portion 21a are set to be slightly smaller than the inner diameter, and the inner diameter is set to a minimum dimension that allows the tube portion 2a to be fitted.

また、図2における第2流体給排口部2Aに示すように、割型リング25の外嵌された管状部2aの外径部2kが、流体通路4と同心にフラットな外周面に形成され、かつ、その外径部2kの外径と割型リング25の内径とが、外径部2kの外径よりも割型リング25の内径が大となる領域においてほぼ同一径に形成される構成とすればより好都合である。この構成を採れば、筒状ナット23の締付け操作の際に割型リング25と管状部2aとが抉れたりすることなく円滑に相対移動でき、維持手段Mによる両流体給排口部1A,2Aの引寄せ移動を効率良く行う機能が促進される。   Further, as shown in the second fluid supply / exhaust port 2A in FIG. 2, the outer diameter portion 2k of the tubular portion 2a on which the split ring 25 is fitted is formed on the flat outer peripheral surface concentrically with the fluid passage 4. In addition, the outer diameter of the outer diameter portion 2k and the inner diameter of the split ring 25 are formed to be substantially the same in a region where the inner diameter of the split ring 25 is larger than the outer diameter of the outer diameter portion 2k. This is more convenient. If this configuration is adopted, the split ring 25 and the tubular portion 2a can be smoothly moved relative to each other without being twisted during the tightening operation of the cylindrical nut 23, and both the fluid supply / discharge port portions 1A, 1A, The function of efficiently performing the 2A pulling movement is promoted.

さらに、筒状ナット21における雌ネジ21nの内奥端と内向きフランジ24との間に、割型リング25に軸方向に摺動自在で、かつ割型リング25の幅寸法をカバーする軸心P方向長さを有する内周面部21mが、流体通路4と同心にフラットな状態に形成されている。即ち、筒状ナット21の雌ネジ21nと内向きフランジ24との間における内径部21aが流体通路4と同心にフラットな内周面に形成され、かつ、その内径部21aの内径が、断面矩形に形成された割型リング25の外径よりも極僅かに大きくした嵌め合い公差状態に精度良く寸法設定されることで内周面部21mに仕上げられている。これにより、筒状ナット21を螺進させた際に割型リング25が傾いて抉るような状態になったり、筒状ナット21の螺進による軸心P方向の押圧力がフランジ部2bにうまく伝わらなかったりする、という不都合が生じることが防止され、有効にフランジ部2bを押して、第1及び第2流体給排口部1A,2Aとを互いに接近する方向に円滑に引寄せることができる。   Further, between the inner back end of the female screw 21 n and the inward flange 24 in the cylindrical nut 21, the shaft center is slidable in the axial direction on the split ring 25 and covers the width of the split ring 25. An inner peripheral surface portion 21 m having a length in the P direction is formed in a flat state concentrically with the fluid passage 4. That is, the inner diameter portion 21a between the female screw 21n of the cylindrical nut 21 and the inward flange 24 is formed on a flat inner peripheral surface concentric with the fluid passage 4, and the inner diameter portion 21a has a rectangular cross section. The inner peripheral surface portion 21m is finished by accurately dimensioning a fitting tolerance that is slightly larger than the outer diameter of the split ring 25 formed in the above. As a result, when the cylindrical nut 21 is screwed, the split ring 25 is inclined, and the pressing force in the direction of the axis P due to the screwing of the cylindrical nut 21 is well applied to the flange portion 2b. The inconvenience of not being transmitted can be prevented, and the flange portion 2b can be effectively pushed to smoothly draw the first and second fluid supply / exhaust port portions 1A and 2A toward each other.

維持手段Mを用いて両流体給排口部1A,2Aを接続連結する操作手順は次のようである。まず、図3(a)に示すように、筒状ナット21をフランジ部2bを通過させて第2流体給排口部2Aの管状部2aの外周に嵌装する。次いで、図3(b)に示すように、割型リング25を、フランジ部2bと筒状ナット21の先端との間を通して管状部2aに外嵌装備させる。次いで、第1流体給排口部1Aと第2流体給排口部2Aとを互いにあてがい、その状態で筒状ナット21をスライド移動させてから第1流体給排口部1Aの雄ネジ1nに螺着させて締付け操作[図3(c)参照]することにより、図1や図2に示す接合状態が得られる。   The operation procedure for connecting and connecting the fluid supply / exhaust ports 1A and 2A using the maintenance means M is as follows. First, as shown in FIG. 3A, the cylindrical nut 21 is fitted on the outer periphery of the tubular portion 2a of the second fluid supply / discharge port portion 2A through the flange portion 2b. Next, as shown in FIG. 3 (b), the split ring 25 is fitted on the tubular portion 2 a through the gap between the flange portion 2 b and the tip of the tubular nut 21. Next, the first fluid supply / discharge port portion 1A and the second fluid supply / discharge port portion 2A are attached to each other, and the cylindrical nut 21 is slid in this state, and then the male screw 1n of the first fluid supply / discharge port portion 1A is attached. By screwing and performing a tightening operation [see FIG. 3C], the joined state shown in FIGS. 1 and 2 can be obtained.

前述したように、環状溝6の径方向寸法よりも環状突起8の径方向寸法を若干大きくして圧入状態で挿入させる構造にしておくと、内周面6a及び外周面6bと環状突起8とが径方向に強く圧接されて、極めて有効な一次シール部S1及び二次シール部S2が得られる。この場合、両流体給排口部1A,2Aの環状溝6の外径側部分には十分な厚み(径方向寸法)があり、それによって十分な剛性があるが、環状溝6の内径側部分は、厚みの薄い(径方向寸法の短い)第1接合端部5のみが存在し、剛性に富む状態ではない。そのため、環状突起8の環状溝6への圧入嵌合に伴い、第1接合端部5が内径側に傾き変形して、環状突起8と環状溝6との接触圧が下がるとか、部分的に流体通路4の径が縮小されるといった不都合の生じるおそれがある。   As described above, when the radial dimension of the annular protrusion 8 is slightly larger than the radial dimension of the annular groove 6 and is inserted in a press-fit state, the inner peripheral surface 6a, the outer peripheral surface 6b, the annular protrusion 8 and Are strongly pressed in the radial direction, and an extremely effective primary seal portion S1 and secondary seal portion S2 are obtained. In this case, the outer diameter side portion of the annular groove 6 of both the fluid supply / discharge port portions 1A and 2A has a sufficient thickness (diameter dimension), and thereby has sufficient rigidity, but the inner diameter side portion of the annular groove 6 Is only a thin first joint end portion 5 (short in radial direction), and is not in a state of high rigidity. Therefore, as the annular protrusion 8 is press-fitted into the annular groove 6, the first joint end portion 5 is inclined and deformed toward the inner diameter side, and the contact pressure between the annular protrusion 8 and the annular groove 6 is lowered or partially. There is a risk that the diameter of the fluid passage 4 may be reduced.

しかしながら、図2に示すように、第1接合端部5の内径側には、テーパ内周面5aとテーパ外周面7aとが圧接される状態で第2接合端部7が存在するので、その第2接合端部7の存在によって第1接合端部5の内径側への傾き変形(縮径変形)が阻止されるようになる利点がある。つまり、テーパ内周面5aとテーパ外周面7aとの圧接による三次シール部S3としての機能が得られるばかりでなく、第1接合端部5の剛性不足を補って、円管状の各流体通路4,4の径が変化しないように規制し、かつ、一次シール部S1と二次シール部S2の接触圧力の低下を防ぐことができ、流体の円滑な流れと優れたシール性能とを有効に発揮できるという効果が発揮される。   However, as shown in FIG. 2, the second joint end 7 is present on the inner diameter side of the first joint end 5 in a state where the taper inner peripheral surface 5a and the taper outer peripheral surface 7a are in pressure contact with each other. The presence of the second joint end portion 7 has an advantage that the deformation of the first joint end portion 5 toward the inner diameter side (diameter reduction deformation) is prevented. That is, not only the function as the tertiary seal portion S3 by the press contact between the taper inner peripheral surface 5a and the taper outer peripheral surface 7a can be obtained, but also the lack of rigidity of the first joint end portion 5 can be compensated, and each of the tubular fluid passages 4 is formed. , 4 can be controlled so as not to change, and the contact pressure between the primary seal portion S1 and the secondary seal portion S2 can be prevented from being lowered, and a smooth fluid flow and excellent sealing performance can be effectively exhibited. The effect of being able to be demonstrated.

嵌合シール部3を形成する環状溝6と環状突起8との関係については前にも少し述べたが、図4に示すように、環状溝6の自由状態における径幅(溝幅)6wと環状突起8の自由状態における径幅(厚み)8wとが、6w×(1.05〜1.5)=8wとなるように、環状溝6の径幅(溝幅)を環状突起8の径幅(厚み)よりも狭くして両者を圧入嵌合させて嵌合シール部3を形成することが好ましい。これにより、環状溝6と環状突起8との嵌合により形成される嵌合シール部3により液漏れのない極めて良好なシール性を発揮することが可能となる。また、前述したように、このシール接続状態においては、環状溝6と環状突起8との間に軸心P方向の隙間が形成されるよう、環状溝6の凹入深さを環状突起8の突出量よりもやや大きい値とすれば、テーパ内周面5aとテーパ外周面7aとが確実に押圧当接される点で好都合である。   Although the relationship between the annular groove 6 forming the fitting seal portion 3 and the annular protrusion 8 has been described a little earlier, as shown in FIG. 4, the radial width (groove width) 6w in the free state of the annular groove 6 The diameter width (groove width) of the annular groove 6 is set so that the diameter width (thickness) 8w in the free state of the annular protrusion 8 is 6w × (1.05 to 1.5) = 8w. It is preferable that the fitting seal portion 3 is formed by making the width (thickness) narrower and press-fitting both. As a result, the fitting seal portion 3 formed by fitting the annular groove 6 and the annular projection 8 can exhibit extremely good sealing performance without leakage. Further, as described above, in this seal connection state, the recess depth of the annular groove 6 is set so that a gap in the axial center P direction is formed between the annular groove 6 and the annular protrusion 8. If the value is slightly larger than the protruding amount, it is advantageous in that the taper inner peripheral surface 5a and the taper outer peripheral surface 7a are reliably pressed against each other.

テーパ内周面5aとテーパ外周面7aとの関係は、図4に示すように、両流体給排口部1A,2Aが軸心P方向の移動によって相対接近移動される場合には、第2接合端部7におけるテーパ外周面7aの先端側から第1接合端部5のテーパ内周面5aに当接するよう、テーパ内周面5aの傾斜角度θに比べてテーパ外周面7aの傾斜角度αの方を1〜30度、好ましくは3〜10度小さくする(1〜30度+α=θ)のが良い。また、筒状ナット22の締付け後もテーパ外周面7aの先端部分以外はテーパ内周面5aとの間に隙間を持たせて、テーパ外周面7aの先端部分とテーパ内周面5aとの面圧を高める三次シール部S3を形成することができて好ましい。   As shown in FIG. 4, the relationship between the taper inner peripheral surface 5a and the taper outer peripheral surface 7a is as follows when both fluid supply / discharge port portions 1A, 2A are moved relatively close by movement in the axis P direction. Inclination angle α of the taper outer peripheral surface 7a compared to the inclination angle θ of the taper inner peripheral surface 5a so as to come into contact with the taper inner peripheral surface 5a of the first joint end portion 5 from the tip end side of the taper outer peripheral surface 7a at the joint end portion 7. It is better to reduce the angle by 1 to 30 degrees, preferably 3 to 10 degrees (1 to 30 degrees + α = θ). Further, even after the cylindrical nut 22 is tightened, the gap between the tapered outer peripheral surface 5a and the tapered inner peripheral surface 5a except for the tip portion of the tapered outer peripheral surface 7a is provided, so that the surface between the distal end portion of the tapered outer peripheral surface 7a and the tapered inner peripheral surface 5a. The tertiary seal portion S3 that increases the pressure can be formed, which is preferable.

環状溝6は、図4に示すように、その開口側端部を、環状突起8が入り易くなるように、先拡がりする状態に傾斜させたテーパ面6cに形成しても良い。環状突起8の先端角部8aを、図4に示すように、環状溝6に入り易くするために、面取り加工等によって斜めにカットした形状としても良い。環状突起8とシール端部7との間の隅角部sが、図4に示すように、滑らかに形状変化するよう曲面処理が行われたものとしても良い。また、シール端部7の先端部分7bを、図4に示すように、ピン角とならないよう面取りされた形状としても良い。なお、筒状ナット22、割型リング25はPFAやPTFE等のフッ素樹脂製の他、金属やアルミ合金等の非鉄金属等種々の材質が可能である。   As shown in FIG. 4, the annular groove 6 may be formed on a tapered surface 6 c whose opening side end is inclined so as to be expanded so that the annular protrusion 8 can easily enter. As shown in FIG. 4, the tip corner portion 8 a of the annular protrusion 8 may have a shape that is cut obliquely by chamfering or the like in order to easily enter the annular groove 6. The corner portion s between the annular protrusion 8 and the seal end portion 7 may be subjected to curved surface processing so that the shape thereof smoothly changes as shown in FIG. Further, the tip end portion 7b of the seal end portion 7 may be chamfered so as not to have a pin angle as shown in FIG. The cylindrical nut 22 and the split ring 25 can be made of various materials such as non-ferrous metals such as metals and aluminum alloys in addition to fluororesins such as PFA and PTFE.

ところで、図2における第2流体給排口部2Aに示すように、割型リング25の外嵌された管状部2aの外径部2kが、管状の流体通路4と同心にフラットな外周面に形成され、かつ、その外径部2kの外径と割型リング25の内径とが、外径部2kの外径よりも割型リング25の内径が大となる領域においてほぼ同一径に形成される構成とすればより好都合である。この構成を採れば、筒状ナット21の締付け操作の際に割型リング25と管状部2aとが抉れたりすることなく円滑に相対移動でき、維持手段Mによる両流体給排口部1A,2Aの引寄せ移動を効率良く行う機能が促進される。   By the way, as shown in the second fluid supply / exhaust port 2A in FIG. 2, the outer diameter portion 2k of the tubular portion 2a on which the split ring 25 is fitted is formed on a flat outer peripheral surface concentrically with the tubular fluid passage 4. The outer diameter of the outer ring portion 2k and the inner diameter of the split ring 25 are formed to be substantially the same in a region where the inner diameter of the split ring 25 is larger than the outer diameter of the outer diameter portion 2k. This configuration is more convenient. If this configuration is adopted, the split ring 25 and the tubular portion 2a can be smoothly moved relative to each other without being twisted during the tightening operation of the cylindrical nut 21, and both fluid supply / discharge port portions 1A, 1A, The function of efficiently performing the 2A pulling movement is promoted.

〔実施例2〕
実施例2による集積パネルと流体デバイスとの接続構造は、図5、図6に示すように、集積パネル1とフランジ配管2との接続構造である。つまり、フッ素樹脂製の集積パネル1の第1流体給排口部1Aと、フッ素樹脂製のフランジ配管2の第2流体給排口部2Aとを、それぞれの流体通路4,4どうしをシールする状態で連通接続する構成である。フランジ配管2は、管状部2Bと、これの端部であるフランジ部2Aとで構成されており、フランジ部2Aが第2流体給排口部2Aとして機能する。そして、両流体給排口部1A,2Aに跨って構成される維持手段Mの機能により、集積パネル1の側面で成る第1流体給排口部1Aに形成された第1シール端部t1と、フランジ配管2のフランジ部2Aに形成された第2シール端部t2とが嵌め合わされて嵌合シール部3が形成され、かつ、その嵌合シール部3が形成された接合状態が維持されるように構成されている。
[Example 2]
The connection structure between the integrated panel and the fluid device according to the second embodiment is a connection structure between the integrated panel 1 and the flange pipe 2 as shown in FIGS. That is, the first fluid supply / exhaust port portion 1A of the fluororesin integrated panel 1 and the second fluid supply / discharge port portion 2A of the fluororesin flange pipe 2 are sealed between the fluid passages 4, 4. In this state, the communication connection is established. The flange pipe 2 is composed of a tubular portion 2B and a flange portion 2A that is an end portion thereof, and the flange portion 2A functions as the second fluid supply / discharge port portion 2A. The first sealing end t1 formed in the first fluid supply / exhaust port 1A formed on the side surface of the integrated panel 1 by the function of the maintaining means M configured to straddle both the fluid supply / discharge ports 1A, 2A; The second seal end t2 formed on the flange portion 2A of the flange pipe 2 is fitted together to form the fitting seal portion 3, and the joined state in which the fitting seal portion 3 is formed is maintained. It is configured as follows.

集積パネル1の第1シール端部t1、及びフランジ配管2の第2シール端部t2は、図4等に示す実施例1のものと同じであり、その接続部の構造も図2に示す実施例1のものと同じに付き、その接続構造部分の説明は割愛する。但し、第1流体給排口部1Aと第2流体給排口部2Aとを互いに引寄せ、かつ、その引き寄せ状態を維持する引き寄せ機能付き維持手段Mは、実施例1のものと異なる。   The first seal end t1 of the integrated panel 1 and the second seal end t2 of the flange pipe 2 are the same as those of the first embodiment shown in FIG. 4 and the like, and the structure of the connecting portion is also shown in FIG. It is the same as that of Example 1, and the description of the connection structure portion is omitted. However, the first fluid supply / exhaust port portion 1A and the second fluid supply / discharge port portion 2A are attracted to each other and the maintaining means M with an attracting function for maintaining the attracted state is different from that of the first embodiment.

この場合の維持手段Mは、図5及び図6に示すように、集積パネル1を横方向に貫通する状態に形成された段付き孔1Hと、フランジ配管2のフランジ部2Aに形成された貫通孔2hと、これら段付き孔1Hと貫通孔2hとに亘って軸心P方向に沿う状態で挿通されたボルト41及びナット(ナット部の一例)42とを有して構成されている。段付き孔1Hは、ボルト41の軸部分41a挿通する小孔部31、ナット42の回し工具の入る程度の径に設定された大孔部32、及びこれら小孔部31と大孔部32との境目である段差面33とを有して構成されている。尚、ナット部42としては、集積パネル1自体に形成された雌ネジでも良い。   As shown in FIGS. 5 and 6, the maintaining means M in this case includes a stepped hole 1 </ b> H formed so as to penetrate the integrated panel 1 in the lateral direction and a through hole formed in the flange portion 2 </ b> A of the flange pipe 2. A hole 2h, and a bolt 41 and a nut (an example of a nut portion) 42 inserted through the stepped hole 1H and the through hole 2h in a state along the axial center P direction are configured. The stepped hole 1H includes a small hole portion 31 through which the shaft portion 41a of the bolt 41 is inserted, a large hole portion 32 that is set to a diameter that allows the turning tool of the nut 42 to enter, and the small hole portion 31 and the large hole portion 32 And a step surface 33 which is a boundary between the two. The nut portion 42 may be a female screw formed on the integrated panel 1 itself.

この維持手段Mを構成するボルト41及びナット42は、軸心Pに関する周囲の複数箇所(例:3箇所)に均等角度毎に配備されており、第1流体給排口部1Aと第2流体給排口部2Aとを互いに接近する方向に引寄せ自在に、かつ、引寄せ状態を維持自在である。つまり、ボルト41・ナット42の締付け操作により、集積パネル2とフランジ配管2とを互いに接近移動させて、第1シール端部t1の環状溝6と第2シール端部t2の環状突起8とが圧入嵌合することによる嵌合シール部3、並びに第1接合端部5のテーパ内周面5aと第2接合端部7のテーパ外周面7aとが圧接する状態がもたらされる。これにより、環状溝6と環状突起8との圧入嵌合による一次及び二次シール部S1,S2、及びテーパ内周面5aとテーパ外周面7aとの圧接による三次シール部S3が形成されるとともに、そのシール接続状態の維持が行える。   Bolts 41 and nuts 42 constituting the maintaining means M are disposed at a plurality of positions (eg, three positions) around the shaft center P at equal angles, and the first fluid supply / exhaust port 1A and the second fluid It is possible to draw the supply / discharge port 2A in a direction approaching each other and to maintain the drawing state. That is, the tightening operation of the bolt 41 and the nut 42 moves the integrated panel 2 and the flange pipe 2 closer to each other, so that the annular groove 6 of the first seal end t1 and the annular protrusion 8 of the second seal end t2 are formed. The fitting seal part 3 by press fitting and the taper inner peripheral surface 5a of the first joint end 5 and the taper outer peripheral surface 7a of the second joint end 7 are brought into pressure contact. As a result, primary and secondary seal portions S1 and S2 by press-fitting between the annular groove 6 and the annular protrusion 8 and a tertiary seal portion S3 by pressure contact between the tapered inner peripheral surface 5a and the tapered outer peripheral surface 7a are formed. The seal connection state can be maintained.

〔実施例3〕
実施例3による集積パネルと流体デバイスとの接続構造は、図7に示すように、集積パネルとフランジ配管2との接続構造である。実施例1,2による接続構造では、第1シール端部t1に環状溝6を、かつ、第2シール端部t2に環状突起8を形成する構成であるが、実施例3においてはそれとは反対に、第1シール端部t1に環状突起8を、かつ、第2シール端部t2に環状溝6を形成する構成である。この場合、集積パネル1の第1流体給排口部1Aは、第1管状部1aとその先端の第1フランジ部1bとから構成されており、フランジ部1bの先端面に第1シール端部t1が形成されるとともに、フランジ配管2は、第2管状部2Bと、その先端に形成される第2フランジ部2A、即ち第2流体給排口部2Aとを有して構成される。
Example 3
The connection structure between the integrated panel and the fluid device according to the third embodiment is a connection structure between the integrated panel and the flange pipe 2, as shown in FIG. In the connection structure according to the first and second embodiments, the annular groove 6 is formed at the first seal end t1 and the annular protrusion 8 is formed at the second seal end t2, but in the third embodiment, the opposite is the case. In addition, the annular protrusion 8 is formed at the first seal end t1, and the annular groove 6 is formed at the second seal end t2. In this case, the first fluid supply / discharge port portion 1A of the integrated panel 1 is composed of a first tubular portion 1a and a first flange portion 1b at the tip thereof, and a first seal end portion on the tip surface of the flange portion 1b. While t1 is formed, the flange pipe 2 is configured to have a second tubular portion 2B and a second flange portion 2A formed at the tip thereof, that is, a second fluid supply / discharge port portion 2A.

すなわち、この実施例3による接続構造では、フランジ配管2の第2流体給排口部2Aに形成される第2シール端部t2は、第2流体給排口部2Aの端面における流体通路4の開口端部の外径側部分に、流体通路4と同心で、かつ軸心P方向に開放される状態に形成される環状溝6により構成される。この第2シール端部t2は、環状溝6の内周面6aと流体通路4との間に形成される環状の第1接合端部5を有しており、その先端部の内周側には先拡がりテーパ状のテーパ内周面5aが形成されている。なお、環状溝6は、流体通路4から外径側に比較的近い位置において、流体通路4の軸心P方向に深い断面矩形を呈する形状に形成されており、その内周面6aは第1接合端部5の外周面を兼ねている。   That is, in the connection structure according to the third embodiment, the second seal end t2 formed in the second fluid supply / exhaust port 2A of the flange pipe 2 is connected to the fluid passage 4 at the end surface of the second fluid supply / discharge port 2A. It is comprised by the annular groove 6 formed in the outer-diameter side part of an opening edge part by the state opened concentrically with the fluid channel | path 4 and the axial center P direction. The second seal end t2 has an annular first joint end 5 formed between the inner peripheral surface 6a of the annular groove 6 and the fluid passage 4, and is provided on the inner peripheral side of the tip. A taper inner peripheral surface 5a having a tapered shape is formed. The annular groove 6 is formed in a shape having a deep cross-sectional rectangle in the direction of the axis P of the fluid passage 4 at a position relatively close to the outer diameter side from the fluid passage 4, and the inner peripheral surface 6 a thereof is the first peripheral surface 6 a. It also serves as the outer peripheral surface of the joining end 5.

一方、集積パネル1の第1フランジ配管1Aにおける第1フランジ部1bに形成される第1シール端部t1は、第1フランジ部1bの端面における円管状の流体通路4の開口端部の外径側部分に、流体通路4と同心に、かつ、環状溝6に圧入嵌合するよう一体に突出形成される環状突起8により構成される。この第1シール端部t1は、環状突起8と流体通路4との間に形成される環状の第2接合端部7を有しており、その先端部の外周側には、テーパ内周面5aに当接する先窄まりテーパ状のテーパ外周面7aが形成されている。なお、環状突起8は、流体通路4の軸心P方向に長い断面矩形を呈する形状に形成されており、その突出長さは環状溝6の深さよりも若干短い寸法に設定されている。第2接合端部7と環状突起8との間は、先拡がりする環状の谷部分となっており、この谷部分に第1接合端部5が嵌り込み自在に構成されている。   On the other hand, the first seal end t1 formed in the first flange portion 1b of the first flange pipe 1A of the integrated panel 1 is the outer diameter of the open end portion of the circular fluid passage 4 on the end face of the first flange portion 1b. The side portion is formed by an annular protrusion 8 that is concentric with the fluid passage 4 and is integrally formed so as to be press-fitted into the annular groove 6. The first seal end t1 has an annular second joint end 7 formed between the annular protrusion 8 and the fluid passage 4, and a tapered inner peripheral surface is provided on the outer peripheral side of the tip. A tapered tapered outer peripheral surface 7a is formed in contact with 5a. The annular protrusion 8 is formed in a shape having a long cross-sectional rectangle in the direction of the axis P of the fluid passage 4, and the protruding length is set to be slightly shorter than the depth of the annular groove 6. Between the 2nd junction end part 7 and the cyclic | annular protrusion 8, it is the cyclic | annular trough part which spreads forward, The 1st junction end part 5 is comprised by this trough part so that it can fit freely.

また、第2シール端部t2を構成する環状溝6に、これよりも径方向寸法の大なる環状突起8を圧入嵌合させたシール接続状態において有効な一次及び二次シール部S1,S2の機能を得るべく、環状溝6の外径側には、径方向寸法を十分に大きくして剛性を持たせた環状の外周突起部19が形成されている。そして、第1シール端部t1を構成する環状突起8の外径側には、軸心P方向に隙間を伴って外周突起部19を嵌合させるための環状径大溝20が形成されている。また、外周突起部19の外径側には、外周突起部19に対して軸心P方向及び径方向に隙間を有した状態で第1フランジ部1bの第1外径部分1gが回り込むようにしてある。   Further, the primary and secondary seal portions S1 and S2 effective in the seal connection state in which the annular protrusion 8 having a larger radial dimension than the annular groove 6 constituting the second seal end t2 is press-fitted and fitted. In order to obtain a function, an annular outer peripheral projection 19 having a sufficiently large radial dimension and rigidity is formed on the outer diameter side of the annular groove 6. A large annular diameter groove 20 is formed on the outer diameter side of the annular protrusion 8 constituting the first seal end t1 for fitting the outer peripheral protrusion 19 with a gap in the axis P direction. Further, the first outer diameter portion 1g of the first flange portion 1b turns around on the outer diameter side of the outer peripheral projection portion 19 with a gap in the axial center P direction and the radial direction with respect to the outer peripheral projection portion 19. It is.

本構造においても、環状溝6の内側周面6aと環状突起8との圧接による一次シール部S1、及び環状溝6の外側周面と環状突起8との圧接による二次シール部S2が形成されるとともに、第1接合端部5のテーパ内周面5aと第2接合端部7のテーパ外周面7aとが圧接することによる三次シール部S3が形成される接合状態が得られる。つまり、テーパ内周面5aとテーパ外周面7aとが確実に接触するように、環状溝6と環状突起8との間、外周突起部19と環状径大溝20との間、及び第2流体給排口部2Aの第2外径部分2gと第1外径部分1gとの間における夫々の軸心P方向には隙間が生じるように設定されている。実施例3による接続構造に用いられる維持手段Mは、第1,2流体給排口部1A,2Aどうしを互いに接近する方向に引寄せ自在に、かつ、引寄せ状態を維持自に構成されており、その構造を次に説明する。   Also in this structure, a primary seal portion S1 is formed by pressure contact between the inner peripheral surface 6a of the annular groove 6 and the annular protrusion 8, and a secondary seal portion S2 is formed by pressure contact between the outer peripheral surface of the annular groove 6 and the annular protrusion 8. In addition, a joined state in which the tertiary seal portion S3 is formed by press-contacting the tapered inner peripheral surface 5a of the first joint end 5 and the tapered outer peripheral surface 7a of the second joint end 7 is obtained. That is, between the annular groove 6 and the annular protrusion 8, between the outer peripheral protrusion 19 and the large annular diameter groove 20, and the second fluid supply so that the taper inner peripheral surface 5 a and the taper outer peripheral surface 7 a are reliably in contact with each other. It is set so that a gap is generated in each axial center P direction between the second outer diameter portion 2g and the first outer diameter portion 1g of the discharge port 2A. The maintenance means M used in the connection structure according to the third embodiment is configured such that the first and second fluid supply / exhaust port portions 1A and 2A can be pulled toward each other in a direction in which the first and second fluid supply / discharge ports 1A and 2A approach each other. The structure will be described next.

実施例3に用いられる維持手段Mは、図7,8に示すように、二組の割型リング35,25と一対の筒状ナット22,23との計四個の部品から構成されている。第1流体給排口部1Aに外嵌される第1割型リング35は、第1フランジ部1bより大なる外径を有するとともに流体通路4の軸心P方向で第1フランジ部1bに干渉するように寸法設定されて、第1管状部1aに外嵌自在なものであり、二つ割り、または三つ割り以上の割型リングに構成されている。第1の筒状ナット22は、第1フランジ部1bの通過は許容し、かつ、第1割型リング35とは軸心P方向で干渉する開口部24aを有する内向きフランジ24が一端部に形成され、かつ、他端部の外周に雄ネジ部22nが形成された略筒状部材に構成されている。   As shown in FIGS. 7 and 8, the maintaining means M used in the third embodiment is composed of a total of four parts including two sets of split rings 35 and 25 and a pair of cylindrical nuts 22 and 23. . The first split ring 35 fitted on the first fluid supply / discharge port portion 1A has an outer diameter larger than that of the first flange portion 1b and interferes with the first flange portion 1b in the direction of the axis P of the fluid passage 4. The size is set so that it can be fitted onto the first tubular portion 1a, and it is constituted by a split ring that is divided into two or more than three. The first cylindrical nut 22 is allowed to pass through the first flange portion 1b, and an inward flange 24 having an opening 24a that interferes with the first split ring 35 in the axial center P direction is provided at one end portion. The substantially cylindrical member is formed and has a male screw portion 22n formed on the outer periphery of the other end.

フランジ配管2に外嵌装備される第2割型リング25は、第2フランジ部2Aより大なる外径を有し、かつ、軸心P方向で第2フランジ部2Aに干渉するよう寸法設定されて、第2管状部2Bに外嵌自在なものであり、二つ割り、または三つ割り以上の割型リングに構成されている。本実施例においては、第2割型リング25の外径と第1割型リング35の外径とは互いに同じであるが、互いに異なっても可である。第2の筒状ナット23は、第2フランジ部2Aの通過は許容し、かつ、第2割型リング25とは軸心P方向で干渉する開口部24aを有する内向きフランジ24が一端部に形成され、かつ、他端部の内周には雄ネジ部22nに螺合自在な雌ネジ部23nが形成された略筒状部材に構成されている。つまり、第2の筒状ナット23の径は第1の筒状ナット22の径よりも大径である。そして、雄ネジ部22nと雌ネジ部23nとを螺合させての両筒状ナット22,23どうしの締付け操作によって、第1フランジ部1bと第2フランジ部2Aとが、即ち第1流体給排口部1Aと第2流体給排口部2Aとが互いに接近する方向に引寄せられ、かつ、その引寄せ状態が維持可能に構成されている。   The second split ring 25 that is externally fitted to the flange pipe 2 has a larger outer diameter than the second flange portion 2A, and is dimensioned to interfere with the second flange portion 2A in the axis P direction. The second tubular portion 2B can be externally fitted, and is configured as a split ring that is divided into two or more than three. In the present embodiment, the outer diameter of the second split ring 25 and the outer diameter of the first split ring 35 are the same as each other, but may be different from each other. The second cylindrical nut 23 is allowed to pass through the second flange portion 2A, and an inward flange 24 having an opening 24a that interferes with the second split ring 25 in the axial center P direction is provided at one end portion. A substantially cylindrical member is formed and formed with an internal thread portion 23n that can be screwed into the external thread portion 22n on the inner periphery of the other end portion. That is, the diameter of the second cylindrical nut 23 is larger than the diameter of the first cylindrical nut 22. Then, the first flange portion 1b and the second flange portion 2A are brought into contact with each other by the tightening operation of both the cylindrical nuts 22 and 23 by screwing the male screw portion 22n and the female screw portion 23n, that is, the first fluid supply. The discharge port 1A and the second fluid supply / discharge port 2A are attracted in the direction in which they approach each other, and the attracted state can be maintained.

各筒状ナット22,23の内向きフランジ24の開口部24aは、各フランジ部1b,2Aの通過を許容するに足りる最小限の内径寸法に設定されている。各割型リング35,25の外径は、第1の筒状ナット22の内径部22aに入り込み自在となるよう、この内径部22aの内径よりも若干小さい寸法に設定され、かつ、内径は、各管状部1a,2Bに外嵌自在となる最小限の寸法に設定されている。第2の筒状ナット23における内向きフランジ24に隣接する部分には、第2割型リング25を密に内嵌するために雌ネジ部23n及びこれに連なる内径部23aよりも径の小なる内周面部23mが形成されている。   The openings 24a of the inward flanges 24 of the cylindrical nuts 22 and 23 are set to a minimum inner diameter dimension sufficient to allow passage of the flange portions 1b and 2A. The outer diameter of each split ring 35, 25 is set to a dimension slightly smaller than the inner diameter of the inner diameter portion 22a so that it can enter the inner diameter portion 22a of the first cylindrical nut 22, and the inner diameter is It is set to a minimum dimension that allows the tubular portions 1a and 2B to be fitted externally. A portion of the second cylindrical nut 23 adjacent to the inward flange 24 has a smaller diameter than the female screw portion 23n and the inner diameter portion 23a connected to the inner screw portion 23n in order to closely fit the second split ring 25 therein. An inner peripheral surface portion 23m is formed.

第1の筒状ナット22の内径部22aにおける内向きフランジ24に隣接する部分には、第1割型リング35に軸方向に摺動自在で、かつ、第1割型リング35の幅寸法をカバーする軸心P方向長さを有する内周面部22mが、流体通路4と同心にフラットな内周面に形成されている。また、前述した第2の筒状ナット23の内周面部23mも、流体通路4と同心にフラットな内周面に形成されている。即ち、第1の筒状ナット22の内径部22aの内奥部である内周面部22mが流体通路4と同心にフラットな内周面に形成され、かつ、その内周面部22mの内径が、断面矩形に形成された第1割型リング35の外径よりも極僅かに大きくした嵌め合い公差状態に寸法設定される一方、第2の筒状ナット23の内周面部23mが流体通路4と同心にフラットな外周面に形成され、かつ、その内周面部23mの内径が、断面矩形に形成された第1割型リング35の外径よりも極僅かに大きくした嵌め合い公差状態に寸法設定されている。尚、各割型リング35,25の内径は、各フランジ部1b,2Aと面当接するよう、各々の管状部1a,2Bにおける各フランジ部1b,2Aの付根の径とほぼ同じ径に設定されている。   A portion adjacent to the inward flange 24 in the inner diameter portion 22a of the first cylindrical nut 22 is slidable in the axial direction with respect to the first split mold ring 35, and the width dimension of the first split ring 35 is set. An inner peripheral surface portion 22m having a length in the axial center P direction to cover is formed on a flat inner peripheral surface concentric with the fluid passage 4. The inner peripheral surface portion 23 m of the second cylindrical nut 23 described above is also formed on a flat inner peripheral surface concentric with the fluid passage 4. That is, the inner peripheral surface portion 22m that is the inner back portion of the inner diameter portion 22a of the first cylindrical nut 22 is formed on a flat inner peripheral surface concentric with the fluid passage 4, and the inner diameter of the inner peripheral surface portion 22m is While the fitting tolerance is set to be slightly larger than the outer diameter of the first split ring 35 formed in a rectangular cross section, the inner peripheral surface portion 23 m of the second cylindrical nut 23 is connected to the fluid passage 4. Dimensionally set to a fitting tolerance state in which the inner peripheral surface portion 23m is concentrically flat on the outer peripheral surface and the inner diameter of the inner peripheral surface portion 23m is slightly larger than the outer diameter of the first split ring 35 formed in a rectangular cross section. Has been. The inner diameter of each split ring 35, 25 is set to be approximately the same as the diameter of the root of each flange portion 1b, 2A in each tubular portion 1a, 2B so as to come into surface contact with each flange portion 1b, 2A. ing.

これにより、第1及び第2の筒状ナット22,23どうしを螺着させて各筒状ナット22,23を螺進させた際に各割型リング35,25が傾いて抉るような状態になったり、各フランジ部1b,2Aに第1及び第2の筒状ナット22,23の螺進による軸心P方向の押圧力がうまく伝わらなかったりする、という不都合が生じることが防止され、有効に各フランジ部1b,2Aを押して、両フランジ部1b,2Aを互いに接近する方向に良好に引寄せることができるように構成されている。つまり、筒状ナット22,23の内向きフランジ24に隣接する割型リング内嵌部分の内周面部22m,23mが、管状の流体通路4と同心にフラットな内周面に形成され、かつ、その内周面部22m,23mの内径と、断面矩形に形成された割型リング35,25の外径とが、内周面部22m,23mの内径が割型リング35,25の外径よりも大となる領域においてほぼ同一径に形成されている。   As a result, when the first and second cylindrical nuts 22 and 23 are screwed together and the respective cylindrical nuts 22 and 23 are screwed, the split rings 35 and 25 are tilted so as to be inclined. It is possible to prevent the inconvenience that the pressing force in the axial center P direction due to the screwing of the first and second cylindrical nuts 22 and 23 is not transmitted well to the flange portions 1b and 2A. The flange portions 1b and 2A are pushed to each other, so that both flange portions 1b and 2A can be satisfactorily drawn toward each other. That is, the inner peripheral surface portions 22m and 23m of the split ring inner fitting portion adjacent to the inward flange 24 of the cylindrical nuts 22 and 23 are formed on a flat inner peripheral surface concentric with the tubular fluid passage 4, and The inner diameters of the inner peripheral surface portions 22m and 23m and the outer diameters of the split rings 35 and 25 formed in a rectangular cross section are larger than the outer diameters of the inner peripheral surface portions 22m and 23m. Are formed to have substantially the same diameter.

維持手段Mを用いて両流体給排口部1A,2Aどうしを接続連結する操作手順は次のようである。先ず、図8(a)に示すように、第1の筒状ナット22を、第1フランジ部1bの外径側を通過させて第1流体給排口部1Aの第1管状部1aの外周に嵌装し、かつ、第2の筒状ナット23を、第2フランジ部2Aの外径側を通過させてフランジ配管2の第2管状部2Bの外周に嵌装する。各筒状ナット22,23は、夫々第1、第2フランジ部1b,2Aを通過できるものであるから、これら集積パネル1及びフランジ配管2が、それらの他端が他の流体デバイス等に既に接続されている場合でも、問題なくフランジ部1b,2A側の端部から各管状部1a,2Bに外嵌させることができる。なお、各筒状ナット22,23の内向きフランジ側端に、スパナ工具等で回動操作するための六角部又は二面幅部を形成しておけば、締付け及び分解操作上で好都合である。   The operation procedure for connecting and connecting the fluid supply / exhaust ports 1A and 2A using the maintenance means M is as follows. First, as shown in FIG. 8 (a), the outer circumference of the first tubular portion 1a of the first fluid supply / exhaust port portion 1A is passed through the first cylindrical nut 22 through the outer diameter side of the first flange portion 1b. And the second cylindrical nut 23 is fitted to the outer periphery of the second tubular portion 2B of the flange pipe 2 through the outer diameter side of the second flange portion 2A. Since each of the cylindrical nuts 22 and 23 can pass through the first and second flange portions 1b and 2A, respectively, the integrated panel 1 and the flange pipe 2 have their other ends already connected to other fluid devices or the like. Even when connected, it can be externally fitted to the tubular portions 1a and 2B from the end portions on the flange portions 1b and 2A side without any problem. In addition, if a hexagonal part or a two-sided width part for turning operation with a spanner tool or the like is formed at the inward flange side end of each cylindrical nut 22, 23, it is convenient in tightening and disassembling operation. .

次いで、図8(b)に示すように、第1割型リング35を、第1フランジ1bと第1の筒状ナット22の先端との間を通して、第1フランジ部1bの側面に当接する状態で第1流体給排口部1Aの第1管状部1aの外周に嵌装し、かつ、第2割型リング25を、第2フランジ2Bと第2の筒状ナット23の先端との間を通して、第2フランジ部2Bの側面に当接する状態で第2フランジ配管2の第2管状部2Aの外周に嵌装させる。次いで、両フランジ部1b,2Aどうしをあてがい、その状態で第1の筒状ナット22と第2の筒状ナット23とを螺着させての締付け操作[図8(c)参照]を行うことにより、図7に示す接合状態が得られる。   Next, as shown in FIG. 8B, the first split ring 35 is in contact with the side surface of the first flange portion 1b through the first flange 1b and the tip of the first cylindrical nut 22. Is fitted on the outer periphery of the first tubular portion 1a of the first fluid supply / discharge port portion 1A, and the second split ring 25 is passed between the second flange 2B and the tip of the second cylindrical nut 23. The second flange portion 2B is fitted on the outer periphery of the second tubular portion 2A in a state of being in contact with the side surface of the second flange portion 2B. Next, the two flange portions 1b and 2A are assigned to each other, and in this state, the first cylindrical nut 22 and the second cylindrical nut 23 are screwed together (see FIG. 8C). Thus, the bonded state shown in FIG. 7 is obtained.

集積パネルとバルブとの接続部を示す全体概略図(実施例1)Overall schematic diagram showing connection part of integrated panel and valve (Example 1) 図1の接続部の詳細構造を示す要部の断面図Sectional drawing of the principal part which shows the detailed structure of the connection part of FIG. (a)〜(c)は図1の接続構造の接続手順を示す説明図(A)-(c) is explanatory drawing which shows the connection procedure of the connection structure of FIG. 図2の接続構造の嵌合シール部の種々の別形状を示す要部の断面図Sectional drawing of the principal part which shows various different shapes of the fitting seal part of the connection structure of FIG. 集積パネルとフランジ配管との接続部を示す全体概略図(実施例2)Overall schematic diagram showing the connection between the integrated panel and the flange piping (Example 2) 図5の接続部の詳細構造を示す要部の断面図Sectional drawing of the principal part which shows the detailed structure of the connection part of FIG. 集積パネルとフランジ配管との別接続構造を示す要部の断面図(実施例3)Sectional drawing of the principal part which shows another connection structure of an integrated panel and flange piping (Example 3) (a)〜(c)は図7の接続構造の接続手順を示す説明図(A)-(c) is explanatory drawing which shows the connection procedure of the connection structure of FIG.

1 集積パネル
1A 第1流体給排口部
1n 雄ネジ部
2 流体デバイス
2A 第2流体給排口部、外向きフランジ
2a 管状部
2b 外向きフランジ
2h 貫通孔
2k 外径部
3 嵌合シール部
4 流体通路
5 第1接合端部
5a テーパ内周面
6 環状溝
7 第2接合端部
7a テーパ外周面
8 環状突起
21 筒状ナット
21n 雌ネジ部
21m 内周面部
24 内向きフランジ
24a 開口部
25 割型リング
41 ボルト
42 ナット部
M 維持手段
DESCRIPTION OF SYMBOLS 1 Integrated panel 1A 1st fluid supply / exhaust part 1n Male thread part 2 Fluid device 2A 2nd fluid supply / exhaust part, outward flange 2a Tubular part 2b Outward flange 2h Through-hole 2k Outer diameter part 3 Fitting seal part 4 Fluid passage 5 First joint end 5a Tapered inner peripheral surface 6 Annular groove 7 Second joint end 7a Tapered outer peripheral surface 8 Annular projection 21 Tubular nut 21n Female thread portion 21m Inner peripheral surface portion 24 Inward flange 24a Opening portion 25 Die ring 41 Bolt 42 Nut part M Maintenance means

Claims (6)

管状の流体通路が開口する第1流体給排口部を備えた集積パネルの前記第1流体給排口部と、管状の流体通路が開口する第2流体給排口部を備えた流体デバイスの前記第2流体給排口部とを、前記流体通路どうしをシールする状態で連通接続するにあたり、
前記第1流体給排口部及び前記第2流体給排口部の各端面には、前記各流体通路が互いに正対する状態で開口され、前記第1流体給排口部と前記第2流体給排口部のいずれか一方には、その端面における前記流体通路の外径側部分に環状溝が形成され、前記第1流体給排口部と前記第2流体給排口部のいずれか他方には、その端面における前記流体通路の外径側部分に前記環状溝に嵌合する環状突起が形成され、
前記第1流体給排口部と第2流体給排口部とが互いに引寄せられて、前記環状溝と前記環状突起とが圧入嵌合されて嵌合シール部が形成された接合状態を維持する維持手段が装備されるとともに、前記第1及び第2流体給排口部が可撓性を有する合成樹脂材で形成され
前記環状溝により構成される前記第1流体給排口部又は第2流体給排口部には、前記環状溝と前記流体通路との間において環状の第1接合端部が形成され、この第1接合端部の内周面の先端部に先拡がりテーパ状のテーパ内周面が形成されるとともに、
前記環状突起により構成される前記第2流体給排口部又は第1流体給排口部には、前記環状突起と前記流体通路との間において環状の第2接合端部が形成され、この第2接合端部の外周面の先端部に、先窄まりテーパ状で前記テーパ内周面に当接するテーパ外周面が形成され、
前記接合状態においては前記テーパ内周面と前記テーパ外周面とが圧接されるように構成され、
前記第2接合端部と前記環状突起との間は、前記流体通路の軸心方向において先拡がりする環状の谷部分となっており、この谷部分に前記第1接合端部の先端部が嵌り込み自在に構成され、
前記テーパ内周面と前記テーパ外周面とが当接している状態では、前記第1流体給排口部の第1外端面と前記第2流体給排口部の第2外端面との軸心方向の間に間隙が存在するように設定されている集積パネルと流体デバイスとの接続構造。
A fluid device having the first fluid supply / discharge port portion of the integrated panel having a first fluid supply / discharge port portion in which a tubular fluid passage opens, and the second fluid supply / discharge port portion in which a tubular fluid passage opens. In communicating with the second fluid supply / exhaust port portion in a state of sealing the fluid passages,
The end surfaces of the first fluid supply / discharge port portion and the second fluid supply / discharge port portion are opened with the fluid passages facing each other, and the first fluid supply / discharge port portion and the second fluid supply / discharge port portion are opened. An annular groove is formed in one end of the fluid passage on the outer diameter side portion of the fluid passage on the end face thereof, and either one of the first fluid supply / exhaust port portion and the second fluid supply / exhaust port portion is formed on one of the exhaust ports. Is formed with an annular projection that fits into the annular groove on the outer diameter side portion of the fluid passage on the end surface thereof,
The first fluid supply / exhaust port part and the second fluid supply / exhaust port part are attracted to each other, and the annular groove and the annular projection are press-fitted and maintained in a joined state in which a fitting seal part is formed. And the first and second fluid supply / discharge ports are formed of a flexible synthetic resin material ,
An annular first joint end is formed between the annular groove and the fluid passage in the first fluid supply / exhaust port portion or the second fluid supply / discharge port portion configured by the annular groove. A tapered inner peripheral surface is formed in a tapered shape at the front end of the inner peripheral surface of one joining end,
An annular second joint end is formed between the annular projection and the fluid passage in the second fluid supply / exhaust port portion or the first fluid supply / exhaust port portion configured by the annular projection. A tapered outer peripheral surface that is tapered and comes into contact with the tapered inner peripheral surface is formed at the distal end of the outer peripheral surface of the two joining end portions,
In the joined state, the tapered inner peripheral surface and the tapered outer peripheral surface are configured to be in pressure contact with each other,
Between the second joint end and the annular projection is an annular valley portion that expands in the axial direction of the fluid passage, and the tip of the first joint end fits into this valley portion. It is configured freely,
In a state where the tapered inner peripheral surface and the tapered outer peripheral surface are in contact with each other, the axial center between the first outer end surface of the first fluid supply / discharge port portion and the second outer end surface of the second fluid supply / discharge port portion. A connection structure between an integrated panel and a fluidic device set such that a gap exists between directions .
前記維持手段は、前記第1流体給排口部と第2流体給排口部とを引寄せて前記接合状態を得るための引寄せ機能を発揮するものに構成されている請求項1に記載の集積パネルと流体デバイスとの接続構造。 The said maintenance means is comprised so that the attraction | suction function for attracting the said 1st fluid supply / exhaust part and a 2nd fluid supply / exhaust part and obtaining the said joining state may be exhibited. Connection structure of integrated panel and fluidic device. 前記維持手段が、前記第1流体給排口部と第2流体給排口部のいずれか一方の外周部に形成された雄ネジ部に螺合自在な雌ネジ部を備えた筒状ナットと、前記第1流体給排口部と第2流体給排口部のいずれか他方の端部に形成された外向きフランジに前記流体通路の軸心方向で干渉するよう前記第1流体給排口部と第2流体給排口部のいずれか他方の前記外向きフランジに続く管状部に外嵌される割型リングとから成り、
前記筒状ナットの一端部には、前記外向きフランジの通過は許容し、かつ、前記割型リングとは前記軸心方向で干渉する開口部を有する内向きフランジが形成されており、
前記筒状ナットの前記雄ネジ部への締付け操作によって、前記第1流体給排口部と第2流体給排口部とが互いに引寄せられるように構成されている請求項2に記載の集積パネルと流体デバイスとの接続構造。
A cylindrical nut provided with a female screw portion that can be screwed into a male screw portion formed on an outer peripheral portion of one of the first fluid supply / discharge port portion and the first fluid supply / discharge port portion; The first fluid supply / exhaust port interferes with the outward flange formed at the other end of the first fluid supply / discharge port portion and the second fluid supply / discharge port portion in the axial direction of the fluid passage. A split ring that is externally fitted to the tubular portion following the outward flange of the other of the second fluid supply / exhaust port portion,
An inward flange having an opening that allows passage of the outward flange and that interferes with the split ring in the axial direction is formed at one end of the cylindrical nut,
The accumulation according to claim 2, wherein the first fluid supply / exhaust port portion and the second fluid supply / exhaust port portion are attracted to each other by a tightening operation of the cylindrical nut to the male screw portion. Connection structure between panel and fluidic device.
下記(イ)、(ロ)のうちの少なくとも一方の構成を備えている請求項3に記載の集積パネルと流体デバイスとの接続構造。The connection structure between the integrated panel and the fluidic device according to claim 3, comprising at least one of the following (A) and (B).
(イ)前記筒状ナットの、前記内向きフランジに隣接する割型リング内嵌部分の内周面部が、前記管状の流体通路と同心にフラットな内周面に形成され、かつ、その内周面部の内径と、断面矩形に形成された前記割型リングの外径とがほぼ同一径に形成されている。(A) An inner peripheral surface portion of the split ring inner fitting portion adjacent to the inward flange of the cylindrical nut is formed on a flat inner peripheral surface concentric with the tubular fluid passage, and the inner periphery thereof The inner diameter of the surface portion and the outer diameter of the split ring formed in a rectangular cross section are formed to have substantially the same diameter.
(ロ)前記割型リングの外嵌された前記管状部の外径部が、前記管状の流体通路と同心にフラットな外周面に形成され、かつ、その外径部の外径と、前記割型リングの内径とがほぼ同一径に形成されている。(B) The outer diameter portion of the tubular portion fitted on the split ring is formed on a flat outer peripheral surface concentrically with the tubular fluid passage, and the outer diameter of the outer diameter portion and the split portion The inner diameter of the mold ring is formed to be substantially the same diameter.
前記維持手段が、前記第1流体給排口部と第2流体給排口部との少なくともいずれか一方の端部に形成された外向きフランジと、この外向きフランジに形成される貫通孔と、この貫通孔を通して前記第1流体給排口部と第2流体給排口部とのいずれか他方に設けられたナット部に螺着されるボルトとを有して構成されており、The maintaining means includes an outward flange formed at at least one end of the first fluid supply / exhaust port and the second fluid supply / exhaust port, and a through-hole formed in the outward flange. And a bolt that is screwed into a nut portion provided on the other of the first fluid supply / exhaust port portion and the second fluid supply / discharge port portion through the through hole,
前記ボルトを前記ナット部に螺着させて締付けることにより、前記第1流体給排口部と第2流体給排口部とが互いに引寄せられるように構成されている請求項2に記載の集積パネルと流体デバイスとの接続構造。The accumulation according to claim 2, wherein the first fluid supply / exhaust port portion and the second fluid supply / exhaust port portion are attracted to each other by screwing and tightening the bolt to the nut portion. Connection structure between panel and fluidic device.
前記第1及び第2流体給排口部がフッ素樹脂によって形成されている請求項1〜5の何れか一項に記載の集積パネルと流体デバイスとの接続構造。 The connection structure between the integrated panel and the fluid device according to any one of claims 1 to 5, wherein the first and second fluid supply / discharge ports are formed of a fluororesin .
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