JP6913540B2 - Connection structure of fluid equipment - Google Patents

Connection structure of fluid equipment Download PDF

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JP6913540B2
JP6913540B2 JP2017130824A JP2017130824A JP6913540B2 JP 6913540 B2 JP6913540 B2 JP 6913540B2 JP 2017130824 A JP2017130824 A JP 2017130824A JP 2017130824 A JP2017130824 A JP 2017130824A JP 6913540 B2 JP6913540 B2 JP 6913540B2
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receiving portion
screw
fluid device
fluid
tubular member
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JP2019015299A (en
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俊英 飯田
俊英 飯田
藤井　達也
達也 藤井
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Nippon Pillar Packing Co Ltd
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Nippon Pillar Packing Co Ltd
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Priority to JP2017130824A priority Critical patent/JP6913540B2/en
Application filed by Nippon Pillar Packing Co Ltd filed Critical Nippon Pillar Packing Co Ltd
Priority to PCT/JP2018/023024 priority patent/WO2019009049A1/en
Priority to EP18828286.7A priority patent/EP3650737A4/en
Priority to CN201880028421.1A priority patent/CN110573783B/en
Priority to US16/608,402 priority patent/US11953135B2/en
Priority to KR1020197031399A priority patent/KR102566389B1/en
Priority to TW107122452A priority patent/TWI767020B/en
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Description

本発明は、流体機器の接続構造に関する。 The present invention relates to a connection structure of a fluid device.

従来、半導体製造、医療・医薬品製造、食品加工および化学工業等の技術分野の製造装置に設けられる流体機器同士は、特許文献１に記載のような管継手により接続される。この種の製造装置に関しては、管継手が適用された流体機器同士を流体的（流体が内部を流れることができるよう）に接続することが望まれる。この場合、流体機器同士は、一方の第１流体機器に適用された第１管継手と、他方の第２流体機器に適用された第２管継手とが管継手とは別部材のチューブ等により接続される。 Conventionally, fluid devices provided in manufacturing devices in technical fields such as semiconductor manufacturing, medical / pharmaceutical manufacturing, food processing, and chemical industry are connected by pipe fittings as described in Patent Document 1. For this type of manufacturing equipment, it is desirable to fluidly connect the fluid devices to which the fittings are applied (so that the fluid can flow inside). In this case, the fluid devices have a tube or the like in which the first pipe joint applied to one first fluid device and the second pipe joint applied to the other second fluid device are different from the pipe joint. Be connected.

特開平１０−０５４４８９号公報Japanese Unexamined Patent Publication No. 10-054489

従来のような流体機器の接続構造においては、第１流体機器と第２流体機器とを第１管継手および第２管継手を介して互いに流体的に接続するために、チューブを使用する必要があった。さらに、前記チューブの長手方向両端部をそれぞれ前記第１管継手および第２管継手に接合するために、各管継手において軸方向の寸法が比較的大きなインナーリングおよびユニオンナットを使用する必要もある。 In the conventional connection structure of fluid equipment, it is necessary to use a tube to fluidly connect the first fluid equipment and the second fluid equipment to each other via the first pipe joint and the second pipe joint. there were. Further, in order to join both ends of the tube in the longitudinal direction to the first pipe joint and the second pipe joint, respectively, it is necessary to use an inner ring and a union nut having a relatively large axial dimension in each pipe joint. ..

したがって、前記第１流体機器と前記第２流体機器とを互いに流体的に接続する場合に、前記第１流体機器における第１管継手の適用箇所と前記第２流体機器における第２管継手の適用箇所との間に、チューブ、更には各管継手におけるインナーリングおよびユニオンナットのためのスペースを確保しなければならなかった。よって、互いに流体的に接続される前記第１流体機器と前記第２流体機器との設置スペースの省スペース化を実現することが困難であった。 Therefore, when the first fluid device and the second fluid device are fluidly connected to each other, the application location of the first pipe joint in the first fluid device and the application of the second pipe joint in the second fluid device Space had to be reserved between the points for the tubes, as well as the inner rings and union nuts in each pipe joint. Therefore, it has been difficult to save the installation space between the first fluid device and the second fluid device that are fluidly connected to each other.

本発明は、このような事情に鑑みてなされたものであり、流体機器の設置スペースの省スペース化を図ることができる流体機器の接続構造の提供を目的とする。 The present invention has been made in view of such circumstances, and an object of the present invention is to provide a connection structure for a fluid device, which can save space for installing the fluid device.

本発明は、
第１流体機器と第２流体機器とを接続する流体機器の接続構造であって、
前記第１流体機器の第１流体流路に接続され、前記第１流体機器に設けられた筒状の第１受口部と、
前記第２流体機器の第２流体流路に接続され、前記第２流体機器に設けられた筒状の第２受口部と、
前記第１受口部に設けられ、第１螺合部を外周側に有する第１筒状部材と、
前記第２受口部に設けられ、前記第１螺合部と螺合可能な第２螺合部を内周側に有する第２筒状部材と、
前記第１受口部と前記第２受口部との間に設けられ、前記第１受口部との間をシールし、かつ、前記第２受口部との間をシールする接続体と、を備え、
前記第１筒状部材と前記第２筒状部材とが、前記第１螺合部と前記第２螺合部により固定されるものである。 The present invention
It is a connection structure of the fluid equipment that connects the first fluid equipment and the second fluid equipment.
A tubular first receiving portion connected to the first fluid flow path of the first fluid device and provided in the first fluid device.
A tubular second receiving portion connected to the second fluid flow path of the second fluid device and provided in the second fluid device,
A first tubular member provided in the first receiving portion and having a first screwed portion on the outer peripheral side, and
A second tubular member provided on the second receiving portion and having a second screwed portion that can be screwed with the first screwed portion on the inner peripheral side.
With a connecting body provided between the first receiving portion and the second receiving portion, sealing between the first receiving portion and sealing between the second receiving portion and the second receiving portion. , Equipped with
The first tubular member and the second tubular member are fixed by the first screwed portion and the second screwed portion.

この構成によれば、前記第１筒状部材と前記第２筒状部材との固定状態を保ちつつ、前記第１流体機器と前記第２流体機器とを流体的に接続することができる。そのうえで、２台の流体機器の接続部からの流体の漏洩を防止することができる。また、第１流体機器と第２流体機器とを流体的に接続するために、第１流体機器と第２流体機器との間にチューブ等の部材を介在させる必要がない。よって、２台の流体機器をできるだけ近接させた状態で流体的に接続して、これらの流体機器の設置スペースの省スペース化を図ることができる。 According to this configuration, the first fluid device and the second fluid device can be fluidly connected while maintaining the fixed state of the first tubular member and the second tubular member. In addition, it is possible to prevent fluid leakage from the connection portion of the two fluid devices. Further, in order to fluidly connect the first fluid device and the second fluid device, it is not necessary to interpose a member such as a tube between the first fluid device and the second fluid device. Therefore, it is possible to save the installation space of these fluid devices by fluidly connecting the two fluid devices in a state of being as close as possible to each other.

本発明の別の態様によれば、
前記第１筒状部材と前記第２筒状部材とが、径方向に対向して配置される。 According to another aspect of the invention
The first tubular member and the second tubular member are arranged so as to face each other in the radial direction.

本発明のまた別の態様によれば、
前記第１受口部と前記第１筒状部材、及び前記第２受口部と前記第２筒状部材の少なくとも一方は、固定用ネジを用いて固定されており、
前記第１螺合部は、第１螺合部用ネジを有し、
前記第２螺合部は、前記第２筒状部材が前記第１筒状部材から離反することを規制し、前記第１螺合部用ネジに締め付けられる第２螺合部用ネジを有し、
前記第１螺合部用ネジに対する前記第２螺合部用ネジの締付方向が、前記固定用ネジの締付方向と反対である。 According to yet another aspect of the invention.
At least one of the first receiving portion and the first tubular member, and the second receiving portion and the second tubular member is fixed by using a fixing screw.
The first screwed portion has a screw for the first screwed portion and has a screw.
The second screwed portion has a second screwed portion screw that regulates the second tubular member from separating from the first tubular member and is fastened to the first screwed portion screw. ,
The tightening direction of the second screw portion screw with respect to the first screw portion screw is opposite to the tightening direction of the fixing screw.

本発明のまた別の態様によれば、
前記接続体が、前記第１受口部と前記第２受口部との間に位置する張出部を有する。 According to yet another aspect of the invention.
The connecting body has an overhanging portion located between the first receiving portion and the second receiving portion.

本発明のまた別の態様によれば、
前記第１受口部は、前記第２受口部と同じ形状を有する。 According to yet another aspect of the invention.
The first receiving portion has the same shape as the second receiving portion.

本発明によれば、流体機器の設置スペースの省スペース化を図ることができる。 According to the present invention, it is possible to save the installation space of the fluid device.

本発明の第１実施形態に係る流体機器の接続構造の断面図である。It is sectional drawing of the connection structure of the fluid device which concerns on 1st Embodiment of this invention. 図１の部分拡大図である。It is a partially enlarged view of FIG. 図１の流体機器の接続構造における２台の流体機器の離反状態を示す図である。It is a figure which shows the separation state of two fluid devices in the connection structure of the fluid device of FIG. 図１の流体機器の接続構造における２台の流体機器の接続途中の状態を示す図である。It is a figure which shows the state in the process of connecting two fluid devices in the connection structure of the fluid device of FIG. 本発明の第２実施形態に係る流体機器の接続構造の断面図である。It is sectional drawing of the connection structure of the fluid device which concerns on 2nd Embodiment of this invention. 本発明の第３実施形態に係る流体機器の接続構造の断面図である。It is sectional drawing of the connection structure of the fluid device which concerns on 3rd Embodiment of this invention. 本発明の第４実施形態に係る流体機器の接続構造の断面図である。It is sectional drawing of the connection structure of the fluid device which concerns on 4th Embodiment of this invention.

本発明の第１実施形態について図面を参照しつつ説明する。 The first embodiment of the present invention will be described with reference to the drawings.

図１は、本発明の第１実施形態に係る流体機器の接続構造の断面図である。図２は、図１の部分拡大図である。図３は、図１の流体機器の接続構造における２台の流体機器の離反状態を示す図である。図４は、図１の流体機器の接続構造における２台の流体機器の接続途中の状態を示す図である。 FIG. 1 is a cross-sectional view of a connection structure of a fluid device according to a first embodiment of the present invention. FIG. 2 is a partially enlarged view of FIG. FIG. 3 is a diagram showing a separated state of two fluid devices in the connection structure of the fluid devices of FIG. FIG. 4 is a diagram showing a state in which two fluid devices are being connected in the connection structure of the fluid devices of FIG.

図１〜図４に示すように、本実施形態に係る流体機器の接続構造は、第１流体機器１と第２流体機器２とを流体的に接続するために用いられる。換言すれば、流体機器の接続構造は、第１流体機器１と第２流体機器２とが接続されることにより、内部に流体を流すことができるものである。 As shown in FIGS. 1 to 4, the fluid device connection structure according to the present embodiment is used to fluidly connect the first fluid device 1 and the second fluid device 2. In other words, the connection structure of the fluid device is such that the fluid can flow inside by connecting the first fluid device 1 and the second fluid device 2.

第１流体機器１および第２流体機器２は、互いに近接した状態で並置され得る形状を有する。第１流体機器１および第２流体機器２の各々の具体例としては、所定の流体流路を有するバルブ、流量計、ポンプおよび継手が挙げられるが、これに限定されるものではない。 The first fluid device 1 and the second fluid device 2 have a shape that can be juxtaposed in close proximity to each other. Specific examples of each of the first fluid device 1 and the second fluid device 2 include, but are not limited to, valves, flow meters, pumps and joints having a predetermined fluid flow path.

前記流体機器の接続構造は、第１受口部１１と、第２受口部１２と、第１筒状部材１３と、第２筒状部材１４と、接続体１５とを備える。 The connection structure of the fluid device includes a first receiving portion 11, a second receiving portion 12, a first tubular member 13, a second tubular member 14, and a connecting body 15.

第１受口部１１は、第１流体機器１に設けられる。第１受口部１１は、第１流体機器１の第１流体流路２１に接続される。第１受口部１１は、筒状に形成される。 The first receiving portion 11 is provided in the first fluid device 1. The first receiving portion 11 is connected to the first fluid flow path 21 of the first fluid device 1. The first receiving portion 11 is formed in a tubular shape.

第２受口部１２は、第２流体機器２に設けられる。第２受口部１２は、第２流体機器２の第２流体流路２５に接続される。第２受口部１２は、筒状に形成される。 The second receiving portion 12 is provided in the second fluid device 2. The second receiving portion 12 is connected to the second fluid flow path 25 of the second fluid device 2. The second receiving portion 12 is formed in a tubular shape.

第１筒状部材１３は、第１受口部１１に設けられる。第１筒状部材１３は、その外周側に第１螺合部５３を有する。 The first tubular member 13 is provided in the first receiving portion 11. The first tubular member 13 has a first screwed portion 53 on the outer peripheral side thereof.

第２筒状部材１４は、第２受口部１２に設けられる。第２筒状部材１４は、その内周側に第２螺合部５４を有する。 The second tubular member 14 is provided in the second receiving portion 12. The second tubular member 14 has a second screwed portion 54 on the inner peripheral side thereof.

接続体１５は、第１受口部１１と第２受口部１２との間に設けられる。接続体１５は、第１受口部１１との間をシールし、かつ、第２受口部１２との間をシールするように構成されている。 The connecting body 15 is provided between the first receiving portion 11 and the second receiving portion 12. The connecting body 15 is configured to seal between the first receiving portion 11 and the second receiving portion 12.

そして、前記流体機器の接続構造において、第１筒状部材１３と第２筒状部材１４とが、第１螺合部５３と第２螺合部５４により固定される。 Then, in the connection structure of the fluid device, the first tubular member 13 and the second tubular member 14 are fixed by the first screwed portion 53 and the second screwed portion 54.

本実施形態において、前記流体機器の接続構造に係る２台の流体機器１・２は、それぞれの受口部１１・１２が互いに軸方向に対向した状態で設置される。 In the present embodiment, the two fluid devices 1 and 2 related to the connection structure of the fluid devices are installed with their respective receiving portions 11 and 12 facing each other in the axial direction.

第１受口部１１は、第１流体機器１に適用されるものである。第１受口部１１は、本実施形態においては第１流体機器１のケーシング３５と一体化されたものである。なお、第１受口部１１は、ケーシング３５と一体に形成されている必要はなく、別体としてもよい。 The first receiving portion 11 is applied to the first fluid device 1. In the present embodiment, the first receiving portion 11 is integrated with the casing 35 of the first fluid device 1. The first receiving portion 11 does not have to be integrally formed with the casing 35, and may be a separate body.

第１受口部１１は、外筒部４１と、内筒部４２とを有する。外筒部４１は、概ね一定の内径を有する円筒体からなり、ケーシング３５における第１流体流路２１の開口部周囲近傍にケーシング３５の外部へ突出するように設けられる。 The first receiving portion 11 has an outer cylinder portion 41 and an inner cylinder portion 42. The outer cylinder portion 41 is made of a cylindrical body having a substantially constant inner diameter, and is provided so as to project to the outside of the casing 35 in the vicinity of the vicinity of the opening of the first fluid flow path 21 in the casing 35.

外筒部４１は、その突出端部（軸方向一方の端部）４３側から接続体１５の一部を嵌め込むことができるように形成される。外筒部４１は、その径方向において、嵌込後の接続体１５の一部に対して略隙間なく配置される。 The outer cylinder portion 41 is formed so that a part of the connecting body 15 can be fitted from the protruding end portion (one end in the axial direction) 43 side. The outer cylinder portion 41 is arranged with substantially no gap with respect to a part of the connected body 15 after fitting in the radial direction thereof.

また、外筒部４１は、第１ネジ（固定用ネジ）２３を含む。第１ネジ２３は、外筒部４１の外周に、外筒部４１の軸方向に沿って設けられる。第１ネジ２３は、雄ネジから構成される。 Further, the outer cylinder portion 41 includes a first screw (fixing screw) 23. The first screw 23 is provided on the outer periphery of the outer cylinder portion 41 along the axial direction of the outer cylinder portion 41. The first screw 23 is composed of a male screw.

内筒部４２は、外筒部４１の内径よりも小さく、概ね一定の外径を有する円筒体からなり、ケーシング３５における第１流体流路２１の開口部周囲近傍に外筒部４１の突出方向（第１受口部１１の軸方向一方）と同方向へ突出するように設けられる。内筒部４２は、外筒部４１の径方向内方に所定間隔を隔てて配置されるとともに、外筒部４１との関係において軸方向に伸びている。 The inner cylinder portion 42 is formed of a cylindrical body that is smaller than the inner diameter of the outer cylinder portion 41 and has a substantially constant outer diameter, and the outer cylinder portion 41 protrudes in the vicinity of the vicinity of the opening of the first fluid flow path 21 in the casing 35. It is provided so as to project in the same direction as (one of the axial directions of the first receiving portion 11). The inner cylinder portion 42 is arranged inward in the radial direction of the outer cylinder portion 41 at predetermined intervals, and extends in the axial direction in relation to the outer cylinder portion 41.

ここで、内筒部４２は、その突出端部４４が外筒部４１の突出端部４３よりも突出方向に対して反対側に位置するように、即ちケーシング３５から外筒部４１よりも突出しないように設けられる。こうして、第１受口部１１が、外筒部４１の軸方向（第１受口部１１の軸方向）において外筒部４１の軸方向他方側（ケーシング３５側）で二重筒状を呈するように形成される。 Here, the inner cylinder portion 42 protrudes from the casing 35 from the outer cylinder portion 41 so that the protruding end portion 44 is located on the opposite side of the protruding end portion 43 of the outer cylinder portion 41 with respect to the protruding direction. It is provided so as not to. In this way, the first receiving portion 11 exhibits a double tubular shape in the axial direction of the outer cylinder portion 41 (axial direction of the first receiving portion 11) on the other side (casing 35 side) of the outer cylinder portion 41 in the axial direction. Is formed like this.

内筒部４２は、第１流体流路２１の流路径と略同一の内径を有し、かつ、接続体１５の内径と略同一の内径を有する。内筒部４２は、第１受口部１１により第１流体機器１と接続体１５とを流体的に接続させるべく、第１流体流路２１と接続体１５の内部空間４８とを連通させるように第１流体機器１と接続体１５との間に配置される。 The inner cylinder portion 42 has substantially the same inner diameter as the flow path diameter of the first fluid flow path 21, and has substantially the same inner diameter as the inner diameter of the connecting body 15. The inner cylinder portion 42 communicates the first fluid flow path 21 with the internal space 48 of the connecting body 15 so that the first fluid device 1 and the connecting body 15 are fluidly connected by the first receiving portion 11. Is arranged between the first fluid device 1 and the connecting body 15.

内筒部４２の外周面と、これに対向する外筒部４１の内周面との間には、環状の溝部４６が形成される。溝部４６は、外筒部４１および内筒部４２の突出方向（第２受口部１２側）へ開口しかつ全周にわたって形成される。また、内筒部４２の突出端部４４近傍には、傾斜面４７が形成される。傾斜面４７は、第１流体流路２１側から内筒部４２の突出端部４４側へ向かって径が漸次拡大するように形成される。 An annular groove 46 is formed between the outer peripheral surface of the inner cylinder portion 42 and the inner peripheral surface of the outer cylinder portion 41 facing the outer peripheral surface. The groove portion 46 is formed so as to open in the projecting direction (second receiving portion 12 side) of the outer cylinder portion 41 and the inner cylinder portion 42 and over the entire circumference. Further, an inclined surface 47 is formed in the vicinity of the protruding end portion 44 of the inner cylinder portion 42. The inclined surface 47 is formed so that the diameter gradually increases from the first fluid flow path 21 side toward the protruding end portion 44 side of the inner cylinder portion 42.

本実施形態において、第１受口部１１は、所定の樹脂、例えば、ＰＦＡ（テトラフルオロエチレン・パーフルオロアルキルビニルエーテル共重合体）、ＰＶＤＦ（ポリビニリデンフルオライド）、ＥＴＦＥ（テトラフルオロエチレン・エチレン共重合体）、ＦＥＰ（テトラフルオロエチレン・ヘキサフルオロプロピレン共重合体）またはＰＴＦＥ（ポリテトラフルオロエチレン）等のフッ素樹脂により製造される。なお、フッ素樹脂に限定されず、ポロプロピレン（ＰＰ）等のその他の樹脂であってもよい。 In the present embodiment, the first receiving portion 11 is formed of a predetermined resin, for example, PFA (tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer), PVDF (polyvinylidene fluoride), ETFE (tetrafluoroethylene / ethylene). It is produced from a fluororesin such as polymer), FEP (tetrafluoroethylene / hexafluoropropylene copolymer) or PTFE (polytetrafluoroethylene). The resin is not limited to fluororesin, and may be other resin such as polypropylene (PP).

本実施形態において、第２受口部１２は、第１受口部１１を仮想中央面６８に沿って反転させた形状であって、第１受口部１１と実質的に同じ形状を有する。そのため、第２受口部１２については、第１受口部１１の構成要素と略同じ構成要素には同じ符号を付して、その説明を省略する。なお、説明の便宜上、固定用ネジとしての第１ネジ２３および第２ネジ２６のように実質的に同じ構成要素であっても異なる符号を付していることもある。 In the present embodiment, the second receiving portion 12 has a shape in which the first receiving portion 11 is inverted along the virtual central surface 68, and has substantially the same shape as the first receiving portion 11. Therefore, with respect to the second receiving portion 12, substantially the same components as the constituent elements of the first receiving portion 11 are designated by the same reference numerals, and the description thereof will be omitted. For convenience of explanation, the first screw 23 and the second screw 26 as the fixing screws may have different reference numerals even if they are substantially the same component.

接続体１５は、第１シール部３１と、第２シール部３２とを有する。ここで、第１シール部３１は、接続体１５と第１受口部１１との間をシールするものである。第２シール部３２は、接続体１５と第２受口部１２との間をシールするものである。 The connecting body 15 has a first seal portion 31 and a second seal portion 32. Here, the first seal portion 31 seals between the connecting body 15 and the first receiving portion 11. The second sealing portion 32 seals between the connecting body 15 and the second receiving portion 12.

詳しくは、接続体１５は、筒状に形成される。接続体１５は、第１受口部１１に対応する第１の部分１５ａと、第２受口部１２に対応する第２の部分１５ｂとを有する（図２参照）。第１の部分１５ａは、概ね一定の内径を有する円筒体からなり、接続体１５の内部空間４８の一部からなる流体流路を備える。第１の部分１５ａの流体流路は、第１流体流路２１と連通するように、外筒部４１に嵌め込まれた状態で第１受口部１１に装着される。 Specifically, the connecting body 15 is formed in a tubular shape. The connecting body 15 has a first portion 15a corresponding to the first receiving portion 11 and a second portion 15b corresponding to the second receiving portion 12 (see FIG. 2). The first portion 15a is composed of a cylindrical body having a substantially constant inner diameter, and includes a fluid flow path formed of a part of the internal space 48 of the connecting body 15. The fluid flow path of the first portion 15a is mounted on the first receiving portion 11 in a state of being fitted in the outer cylinder portion 41 so as to communicate with the first fluid flow path 21.

第１の部分１５ａには、嵌合部６１と、突部６２と、突起６３とが含まれる。嵌合部６１は、円筒状に形成される。嵌合部６１は、第１の部分１５ａが第１受口部１１に装着された際、外筒部４１を全周にわたって径方向内側から包囲した状態で嵌合される。そして、嵌合部６１の軸方向両端部のうちの一方の端部（第１流体機器１側）には、突部６２および突起６３がそれぞれ形成される。 The first portion 15a includes a fitting portion 61, a protrusion 62, and a protrusion 63. The fitting portion 61 is formed in a cylindrical shape. When the first portion 15a is attached to the first receiving portion 11, the fitting portion 61 is fitted in a state of surrounding the outer cylinder portion 41 from the inside in the radial direction over the entire circumference. Then, a protrusion 62 and a protrusion 63 are formed at one end (on the side of the first fluid device 1) of both ends in the axial direction of the fitting portion 61, respectively.

突部６２および突起６３は、それぞれ円環状に形成される。突部６２は、第１の部分１５ａが第１受口部１１に装着された際に、第１受口部１１の溝部４６に対して全周にわたって圧入される。また、突部６２は、第１受口部１１に形成された溝部４６の第１流体機器１側の側面に接触しない状態で挿通される。 The protrusion 62 and the protrusion 63 are each formed in an annular shape. When the first portion 15a is attached to the first receiving portion 11, the protrusion 62 is press-fitted into the groove portion 46 of the first receiving portion 11 over the entire circumference. Further, the protrusion 62 is inserted without contacting the side surface of the groove 46 formed in the first receiving portion 11 on the first fluid device 1 side.

突起６３には、仮想中央面６８側から第１流体機器１側に向かって漸次縮小するテーパ面６５が形成される。テーパ面６５は、第１の部分１５ａの径方向において、突部６２の内方に配置される。テーパ面６５は、第１の部分１５ａの軸方向において、内筒部４２の傾斜面４７に対向して配置される。テーパ面６５は、第１の部分１５ａが第１受口部１１に装着された際に内筒部４２の傾斜面４７に圧接される。 The protrusion 63 is formed with a tapered surface 65 that gradually shrinks from the virtual central surface 68 side toward the first fluid device 1 side. The tapered surface 65 is arranged inward of the protrusion 62 in the radial direction of the first portion 15a. The tapered surface 65 is arranged so as to face the inclined surface 47 of the inner cylinder portion 42 in the axial direction of the first portion 15a. The tapered surface 65 is pressed against the inclined surface 47 of the inner cylinder portion 42 when the first portion 15a is attached to the first receiving portion 11.

本実施形態において、接続体１５は、その軸方向と直交しかつ当該軸方向における接続体１５の中央に位置する仮想中央面６８に対して対称な形状を有する。 すなわち、第１の部分１５ａおよび第２の部分１５ｂが実質的に同じ形状を有する。そのため、第２の部分１５ｂについては、図中で第１の部分１５ａの構成要素と略同じ構成要素に同一符号を付して、その説明を省略する。 In the present embodiment, the connecting body 15 has a shape orthogonal to the axial direction thereof and symmetrical with respect to the virtual central surface 68 located at the center of the connecting body 15 in the axial direction. That is, the first portion 15a and the second portion 15b have substantially the same shape. Therefore, with respect to the second portion 15b, substantially the same components as those of the first portion 15a in the drawing are designated by the same reference numerals, and the description thereof will be omitted.

本実施形態において、接続体１５は、所定の樹脂、例えば、ＰＦＡ、ＰＶＤＦ、ＥＴＦＥ、ＦＥＰまたはＰＴＦＥ等のフッ素樹脂やその他の熱可塑性樹脂により製造される。 In this embodiment, the connector 15 is made of a predetermined resin, for example, a fluororesin such as PFA, PVDF, ETFE, FEP or PTFE or other thermoplastic resin.

なお、接続体１５は、本実施形態においては実質的に同じ形状を有する第１の部分１５ａおよび第２の部分１５ｂを一体化したものとしているが、これに代えて、互いに異なる形状を有する第１の部分および第２の部分を連結したものとしてもよい。 In the present embodiment, the connecting body 15 integrates the first portion 15a and the second portion 15b having substantially the same shape, but instead, the connecting body 15 has a different shape from each other. The first part and the second part may be connected.

本実施形態において、第１筒状部材１３は、第１受口部１１、詳しくはその外筒部４１を包囲した状態で、第１受口部１１（外筒部４１）に着脱可能に固定される。第１筒状部材１３は、第１螺合部５３に加え、第１ネジ２３に螺合された第３ネジ（固定用ネジ）２８を更に有する。第３ネジ２８は、第１筒状部材１３の内周に形成される。第１螺合部５３は、第１筒状部材１３の外周に形成される。 In the present embodiment, the first tubular member 13 is detachably fixed to the first receiving portion 11 (outer cylinder portion 41) while surrounding the first receiving portion 11, specifically the outer cylinder portion 41 thereof. Will be done. The first tubular member 13 further has a third screw (fixing screw) 28 screwed into the first screw 23 in addition to the first screwed portion 53. The third screw 28 is formed on the inner circumference of the first tubular member 13. The first screwed portion 53 is formed on the outer periphery of the first tubular member 13.

第２筒状部材１４は、第２受口部１２、詳しくはその外筒部４１を包囲した状態で、第２受口部１２（外筒部４１）に着脱可能に固定される。第２筒状部材１４は、第２螺合部５４に加え、第２ネジ２６に螺合された第４ネジ（固定用ネジ）２９を更に有する。第４ネジ２９は、第２筒状部材１４の内周に形成される。第２螺合部５４は、第２筒状部材１４の内周に形成される。 The second tubular member 14 is detachably fixed to the second receiving portion 12 (outer cylinder portion 41) in a state of surrounding the second receiving portion 12, specifically the outer cylinder portion 41 thereof. The second tubular member 14 further has a fourth screw (fixing screw) 29 screwed into the second screw 26 in addition to the second screwed portion 54. The fourth screw 29 is formed on the inner circumference of the second tubular member 14. The second screw portion 54 is formed on the inner circumference of the second tubular member 14.

ここで、第１筒状部材１３は、第３ネジ２８が第１ネジ２３に螺合した状態で、第１受口部１１の外筒部４１をその全周にわたって包囲しつつ第１受口部１１に取り付けられる。第３ネジ２８は、雌ネジから構成される。第１筒状部材１３において、第３ネジ２８は、第１流体機器１側（第１筒状部材１３の軸方向他方側）に形成される。 Here, the first tubular member 13 has the first socket while surrounding the outer cylinder portion 41 of the first socket portion 11 over the entire circumference in a state where the third screw 28 is screwed into the first screw 23. It is attached to the portion 11. The third screw 28 is composed of a female screw. In the first tubular member 13, the third screw 28 is formed on the first fluid device 1 side (the other side in the axial direction of the first tubular member 13).

第１螺合部５３は、第１筒状部材１３において、外筒部４１の突出方向側である第１流体機器１の反対側（第１筒状部材１３の軸方向一方側）に配置される。本実施形態において、第１螺合部５３は、第１筒状部材１３の外周に第５ネジ（第１螺合部用ネジ）５６を有する。第５ネジ５６は、第１筒状部材１３の軸方向に沿って形成され、雄ネジから構成される。 The first screwed portion 53 is arranged in the first tubular member 13 on the opposite side of the first fluid device 1 (one side in the axial direction of the first tubular member 13), which is the protruding direction side of the outer tubular member 41. NS. In the present embodiment, the first screw portion 53 has a fifth screw (screw for the first screw portion) 56 on the outer circumference of the first tubular member 13. The fifth screw 56 is formed along the axial direction of the first tubular member 13 and is composed of a male screw.

第２筒状部材１４は、第４ネジ２９が第２ネジ２６に螺合した状態で、第２受口部１２の外筒部４１をその全周にわたって包囲しつつ第２受口部１２に取り付けられる。第４ネジ２９は、雌ネジから構成される。第２筒状部材１４において、第４ネジ２９は、第２流体機器２側（第２筒状部材１４の軸方向他方側）に配置される。 In the state where the fourth screw 29 is screwed into the second screw 26, the second tubular member 14 encloses the outer cylinder portion 41 of the second receiving portion 12 over the entire circumference thereof and forms the second receiving portion 12. It is attached. The fourth screw 29 is composed of a female screw. In the second tubular member 14, the fourth screw 29 is arranged on the second fluid device 2 side (the other side in the axial direction of the second tubular member 14).

第２螺合部５４は、第２筒状部材１４において、外筒部４１の突出方向側である第２流体機器２の反対側（第２筒状部材１４の軸方向一方側）に配置される。本実施形態において、第２螺合部５４は、第２筒状部材１４の内周に第６ネジ（第２螺合部用ネジ）５７を有する。第６ネジ５７は、第２筒状部材１４の軸方向に沿って形成され、雌ネジから構成される。 The second screw portion 54 is arranged in the second tubular member 14 on the opposite side of the second fluid device 2 (one side in the axial direction of the second tubular member 14), which is the protruding direction side of the outer cylinder portion 41. NS. In the present embodiment, the second screw portion 54 has a sixth screw (screw for the second screw portion) 57 on the inner circumference of the second tubular member 14. The sixth screw 57 is formed along the axial direction of the second tubular member 14, and is composed of a female screw.

第６ネジ５７は、第２筒状部材１４が第１筒状部材１３から離反することを規制するように第１筒状部材１３の第５ネジ５６と螺合される。ここで、第５ネジ５６に対する第６ネジ５７のネジ方向が、第２ネジ２６に対する第４ネジ２９のネジ方向と反対とされている。すなわち、第５ネジ５６および第６ネジ５７が、第２ネジ２６および第４ネジ２９に対して逆ネジ構造を有するものとされている。 The sixth screw 57 is screwed with the fifth screw 56 of the first tubular member 13 so as to restrict the second tubular member 14 from separating from the first tubular member 13. Here, the screw direction of the sixth screw 57 with respect to the fifth screw 56 is opposite to the screw direction of the fourth screw 29 with respect to the second screw 26. That is, the fifth screw 56 and the sixth screw 57 have a reverse screw structure with respect to the second screw 26 and the fourth screw 29.

第２筒状部材１４は、第４ネジ２９を備える基部５８と、第６ネジ５７を備える先端部５９とを有する。基部５８は、先端部５９よりも小さい内径を有し、先端部５９に対して第２筒状部材１４の軸方向他方側に設けられる。先端部５９は、第６ネジ５７が第５ネジ５６に螺合することにより、第１筒状部材１３の第５ネジ５６を略包囲した状態で第１筒状部材１３に固定される。 The second tubular member 14 has a base 58 having a fourth screw 29 and a tip 59 having a sixth screw 57. The base portion 58 has an inner diameter smaller than that of the tip portion 59, and is provided on the other side of the second tubular member 14 in the axial direction with respect to the tip portion 59. The tip portion 59 is fixed to the first tubular member 13 in a state of substantially surrounding the fifth screw 56 of the first tubular member 13 by screwing the sixth screw 57 into the fifth screw 56.

本実施形態において、第１筒状部材１３は、所定の樹脂、例えば、ＰＦＡ、ＰＶＤＦ、ＥＴＦＥ、ＦＥＰまたはＰＴＦＥ等のフッ素樹脂により製造される。また、第２筒状部材１４は、第１筒状部材１３と同様に、所定の樹脂、例えば、ＰＦＡ、ＰＶＤＦ、ＥＴＦＥ、ＦＥＰまたはＰＴＦＥ等のフッ素樹脂により製造される。 In the present embodiment, the first tubular member 13 is manufactured from a predetermined resin, for example, a fluororesin such as PFA, PVDF, ETFE, FEP or PTFE. Further, the second tubular member 14 is manufactured of a predetermined resin, for example, a fluororesin such as PFA, PVDF, ETFE, FEP or PTFE, like the first tubular member 13.

以上のような構成により、第１流体機器１と第２流体機器２とが流体的に接続される。このときには、第２筒状部材１４の第６ネジ５７が、第１筒状部材１３の第５ネジ５６と螺合する。すなわち、第２筒状部材１４が、第１筒状部材１３に固定される。接続体１５の突部６２が、溝部４６に圧入され、かつ、突起６３のテーパ面６５が、内筒部４２の突出端部４４および傾斜面４７に圧接される。 With the above configuration, the first fluid device 1 and the second fluid device 2 are fluidly connected. At this time, the sixth screw 57 of the second tubular member 14 is screwed with the fifth screw 56 of the first tubular member 13. That is, the second tubular member 14 is fixed to the first tubular member 13. The protrusion 62 of the connecting body 15 is press-fitted into the groove 46, and the tapered surface 65 of the protrusion 63 is pressed against the protruding end 44 and the inclined surface 47 of the inner cylinder 42.

第１流体機器１と第２流体機器２との接続に際しては、まず、図３に示すように、第３ネジ２８を第１ネジ２３に螺合して、第１受口部１１に第１筒状部材１３を着脱可能に固定する。第４ネジ２９を第２ネジ２６に螺合して、第２受口部１２に第２筒状部材１４を着脱可能に固定する。 When connecting the first fluid device 1 and the second fluid device 2, first, as shown in FIG. 3, the third screw 28 is screwed into the first screw 23, and the first receiving portion 11 is first screwed into the first receiving portion 11. The tubular member 13 is detachably fixed. The fourth screw 29 is screwed into the second screw 26, and the second tubular member 14 is detachably fixed to the second receiving portion 12.

次に、第１受口部１３および第２受口部１４のいずれか一方に接続体１５を挿入する。そして、図４に示すように、互いに離反状態にある第１流体機器１と第２流体機器２とを対向させて、接続体１５を第１受口部１３および第２受口部１４の他方に近づける。 Next, the connecting body 15 is inserted into either the first receiving portion 13 or the second receiving portion 14. Then, as shown in FIG. 4, the first fluid device 1 and the second fluid device 2 that are separated from each other are opposed to each other, and the connecting body 15 is connected to the other of the first receiving portion 13 and the second receiving portion 14. Get closer to.

さらに、接続体１５を第１受口部１３および第２受口部１４の他方に挿入しつつ、第１筒状部材１３と第２筒状部材１４とを近づける。そしてて、第５ネジ５６と第６ネジ５７とを螺合して、第１筒状部材１３を第２筒状部材１４に嵌め込む。このように、前記逆ネジ構造を有する第５ネジ５６および第６ネジ５７を用いて、第１筒状部材１３と第２筒状部材１４を締結する。 Further, the first tubular member 13 and the second tubular member 14 are brought close to each other while the connecting body 15 is inserted into the other of the first receiving portion 13 and the second receiving portion 14. Then, the fifth screw 56 and the sixth screw 57 are screwed together to fit the first tubular member 13 into the second tubular member 14. In this way, the first tubular member 13 and the second tubular member 14 are fastened using the fifth screw 56 and the sixth screw 57 having the reverse screw structure.

第１筒状部材１３と第２筒状部材１４を締結後、即ち第１流体機器１と第２流体機器２との接続後には、第１流体機器１側において、第１シール部３１により接続体１５と第１受口部１１との間がシールされる。また、第２流体機器２側において、第２シール部３２により接続体１５と第２受口部１２との間がシールされる。第１シール部３１と第２シール部３２とによれば、シール力が軸方向に作用する一次シール領域８１と、シール力が径方向に作用する二次シール領域８２とが形成される。 After fastening the first tubular member 13 and the second tubular member 14, that is, after connecting the first fluid device 1 and the second fluid device 2, the first fluid device 1 is connected by the first seal portion 31. The space between the body 15 and the first receiving portion 11 is sealed. Further, on the second fluid device 2 side, the connection body 15 and the second receiving portion 12 are sealed by the second sealing portion 32. According to the first seal portion 31 and the second seal portion 32, a primary seal region 81 in which the seal force acts in the axial direction and a secondary seal region 82 in which the seal force acts in the radial direction are formed.

このように、本実施形態に係る流体機器の接続構造によれば、２台の流体機器１・２の接続部からの流体の漏洩を防止することができる。また、第１流体機器１と第２流体機器２とを流体的に接続するために、第１流体機器１と第２流体機器２との間にチューブ等の部材を介在させる必要がない。よって、２台の流体機器１・２をできるだけ近接させた状態で流体的に接続して、これらの流体機器１・２の設置スペースの省スペース化を図ることができる。 As described above, according to the fluid device connection structure according to the present embodiment, it is possible to prevent the fluid from leaking from the connection portion of the two fluid devices 1 and 2. Further, in order to fluidly connect the first fluid device 1 and the second fluid device 2, it is not necessary to interpose a member such as a tube between the first fluid device 1 and the second fluid device 2. Therefore, the two fluid devices 1 and 2 can be fluidly connected in a state of being as close as possible to each other, and the installation space of these fluid devices 1 and 2 can be saved.

また、本実施形態における接続体１５は、張出部８８を有する。張出部８８は、第１流体機器１と第２流体機器２とが流体的に接続された状態において、第１受口部１１と第２受口部１２との間に配置される。 Further, the connecting body 15 in the present embodiment has an overhanging portion 88. The overhanging portion 88 is arranged between the first receiving portion 11 and the second receiving portion 12 in a state where the first fluid device 1 and the second fluid device 2 are fluidly connected.

張出部８８は、第１受口部１１と第２受口部１２との間に非接触状態で挟まれる。張出部８８は、接続体１５の径方向外方へ張り出しており、環状に形成される。 The overhanging portion 88 is sandwiched between the first receiving portion 11 and the second receiving portion 12 in a non-contact state. The overhanging portion 88 projects outward in the radial direction of the connecting body 15 and is formed in an annular shape.

張出部８８は、第１受口部１１および第２受口部１２の各々の突出端部４３の外径よりも大きい外径を有する。張出部８８は、接続体１５における仮想中央面６８上であって、接続体１５の軸方向中途部（接続体１５における第１の部分１５ａと第２の部分１５ｂとの境界部）に設けられる。 The overhanging portion 88 has an outer diameter larger than the outer diameter of each of the protruding end portions 43 of the first receiving portion 11 and the second receiving portion 12. The overhanging portion 88 is provided on the virtual central surface 68 of the connecting body 15 and at an axially intermediate portion of the connecting body 15 (the boundary portion between the first portion 15a and the second portion 15b of the connecting body 15). Be done.

より詳しくは、張出部８８は、接続体１５が第１受口部１１と第２受口部１２とに装着される際に各々の突出端部４３・４３間に介在するように配置される。張出部８８は、第１受口部１１の突出端部４３と軸方向に対向し、かつ、第１受口部１１の突出端部４３と軸方向に対向する。張出部８８は、第１受口部１１および第２受口部１２から接続体１５を取り外すことを容易にする。 More specifically, the overhanging portion 88 is arranged so as to intervene between the protruding end portions 43 and 43 when the connecting body 15 is attached to the first receiving portion 11 and the second receiving portion 12. NS. The overhanging portion 88 faces the protruding end portion 43 of the first receiving portion 11 in the axial direction and faces the protruding end portion 43 of the first receiving portion 11 in the axial direction. The overhanging portion 88 facilitates the removal of the connecting body 15 from the first receiving portion 11 and the second receiving portion 12.

以下、図５乃至図７を用いて、本発明の第２実施形態乃至第４実施形態について説明する。なお、図中、前述の第１実施形態に係る流体機器の接続構造の構成要素と実質的に同じ構成要素については、図中で同じ符号を付して、その説明を適宜省略する。 Hereinafter, the second to fourth embodiments of the present invention will be described with reference to FIGS. 5 to 7. In the drawings, the components substantially the same as the components of the connection structure of the fluid device according to the above-described first embodiment are designated by the same reference numerals in the drawings, and the description thereof will be omitted as appropriate.

図５は、本発明の第２実施形態に係る流体機器の接続構造の断面図である。同図に示すように、本実施形態に係る流体機器の接続構造は、第１受口部１１１と接続体１１５との間をシールする第１シール部１２１に関する構成、および、第２受口部１１２と接続体１１５との間をシールするための第２シール部１２２に関する構成が、前述の第１実施形態に係る流体機器の接続構造と相違する。 FIG. 5 is a cross-sectional view of a connection structure of a fluid device according to a second embodiment of the present invention. As shown in the figure, the connection structure of the fluid device according to the present embodiment includes a configuration relating to a first seal portion 121 that seals between the first socket portion 111 and the connecting body 115, and a second socket portion. The configuration of the second sealing portion 122 for sealing between the 112 and the connecting body 115 is different from the connecting structure of the fluid device according to the first embodiment described above.

第１受口部１１１は、第１流体機器１に適用されるものであり、本実施形態においては第１流体機器１のケーシング３５と一体化されたものである。第１受口部１１１は、筒部１２５と、環状突起１２６とを有する。筒部１２５は、概ね一定の内径を有する円筒体からなり、ケーシング３５における第１流体流路２１の開口部周囲近傍にケーシング３５の外部に向かって突出するように設けられる。 The first receiving portion 111 is applied to the first fluid device 1, and is integrated with the casing 35 of the first fluid device 1 in the present embodiment. The first receiving portion 111 has a tubular portion 125 and an annular protrusion 126. The tubular portion 125 is made of a cylindrical body having a substantially constant inner diameter, and is provided so as to project toward the outside of the casing 35 in the vicinity of the periphery of the opening of the first fluid flow path 21 in the casing 35.

筒部１２５は、その突出端部（軸方向一方の端部）側から接続体１１５の一部を嵌め込むことができるように形成される。筒部１２５は、嵌込後の接続体１１５の一部に対して、前記突出端部付近を除き略隙間なく配置される。また、筒部１２５の外周には、第１ネジ２３が筒部１２５の軸方向に沿って形成される。第１ネジ２３は、雄ネジから構成される。 The tubular portion 125 is formed so that a part of the connecting body 115 can be fitted from the protruding end portion (one end in the axial direction) side. The tubular portion 125 is arranged with respect to a part of the connecting body 115 after fitting, except in the vicinity of the protruding end portion, with substantially no gap. Further, a first screw 23 is formed on the outer circumference of the tubular portion 125 along the axial direction of the tubular portion 125. The first screw 23 is composed of a male screw.

環状突起１２６は、筒部１２５の内径よりも小さい外径を有するリング状体からなり、ケーシング３５における第１流体流路２１の開口部周囲近傍に筒部１２５の突出方向（筒部１２５の軸方向一方）と同方向へ突出するように設けられる。環状突起１２６は、筒部１２５の径方向内方に所定間隔を隔てて配置されるとともに、筒部１２５と同一方向に延長する。 The annular protrusion 126 is formed of a ring-shaped body having an outer diameter smaller than the inner diameter of the tubular portion 125, and the protrusion direction of the tubular portion 125 (the axis of the tubular portion 125) is formed in the vicinity of the periphery of the opening of the first fluid flow path 21 in the casing 35. It is provided so as to project in the same direction as (one of the directions). The annular protrusion 126 is arranged inward in the radial direction of the tubular portion 125 at a predetermined interval, and extends in the same direction as the tubular portion 125.

環状突起１２６は、第１流体流路２１の流路径と略同一の内径を有し、かつ、接続体１１５の内径と略同一の内径を有する。環状突起１２６は、第１流体機器１と接続体１１５との間に配置され、第１流体流路２１と接続体１１５の内部空間１３８とを連通させる。第１受口部１１１により第１流体機器１と接続体１１５とが流体的（流体が内部を流れることができるよう）に接続される。 The annular projection 126 has an inner diameter substantially the same as the flow path diameter of the first fluid flow path 21, and has an inner diameter substantially the same as the inner diameter of the connecting body 115. The annular projection 126 is arranged between the first fluid device 1 and the connecting body 115, and communicates the first fluid flow path 21 with the internal space 138 of the connecting body 115. The first fluid device 1 and the connecting body 115 are fluidly (so that the fluid can flow inside) are connected by the first receiving portion 111.

環状突起１２６の外周面には、テーパ面１２８が含まれる。テーパ面１２８は、その外径が環状突起１２６の突出方向（第１受口部１１１の軸方向一方）へ向かって軸方向に漸次縮小するように形成される。テーパ面１２８は、環状突起１２６の外周において全周にわたって延設され、当該テーパ面１２８と対向する筒部１２５の内周面とが所定間隔を隔てて配置される。 The outer peripheral surface of the annular projection 126 includes a tapered surface 128. The tapered surface 128 is formed so that its outer diameter gradually decreases in the axial direction toward the projecting direction of the annular projection 126 (one of the axial directions of the first receiving portion 111). The tapered surface 128 extends over the entire circumference of the annular projection 126, and the tapered surface 128 and the inner peripheral surface of the tubular portion 125 facing the tapered surface 128 are arranged at predetermined intervals.

第２受口部１１２は、本実施形態においては第１受口部１１１と実質的に同じ形状を有する。そのため、第２受口部１１２については、第１受口部１１１の構成要素と略同じ構成要素には同じ符号を付して、その説明を省略する。なお、説明の便宜上、第１ネジ２３、第２ネジ２６のように実質的に同じ構成要素であっても異なる符号を付していることもある。 The second receiving portion 112 has substantially the same shape as the first receiving portion 111 in the present embodiment. Therefore, with respect to the second receiving portion 112, substantially the same components as the constituent elements of the first receiving portion 111 are designated by the same reference numerals, and the description thereof will be omitted. For convenience of explanation, even substantially the same components such as the first screw 23 and the second screw 26 may have different reference numerals.

接続体１１５は、第１受口部１１１に対応する第１の部分１１５ａと、第２受口部１１２に対応する第２の部分１１５ｂとを有する。第１の部分１１５ａは、概ね一定の内径を有する円筒体からなり、流体流路を備える。この第１の部分１１５ａの流体流路は、接続体１１５において第１の部分１１５ａに対応する内部空間から形成される。第１の部分１１５ａの流体流路は、第１流体流路２１と連通するように、筒部１２５に嵌め込まれた状態で第１受口部１１１に装着される。 The connecting body 115 has a first portion 115a corresponding to the first receiving portion 111 and a second portion 115b corresponding to the second receiving portion 112. The first portion 115a is made of a cylindrical body having a substantially constant inner diameter, and includes a fluid flow path. The fluid flow path of the first portion 115a is formed from the internal space corresponding to the first portion 115a in the connecting body 115. The fluid flow path of the first portion 115a is mounted on the first receiving portion 111 in a state of being fitted in the tubular portion 125 so as to communicate with the first fluid flow path 21.

第１の部分１１５ａには、嵌合部１３１と、突出部１３２とが含まれる。嵌合部１３１は、円筒状に形成される。嵌合部１３１は、第１の部分１１５ａが第１受口部１１１に装着された際、筒部１２５に内嵌される。そして、第１の部分１１５ａにおける嵌合部１３１の軸方向両端部のうちの一方の端部（嵌合部１３１の第１流体機器１側）には、突出部１３２が軸方向に突出するように形成される。 The first portion 115a includes a fitting portion 131 and a protruding portion 132. The fitting portion 131 is formed in a cylindrical shape. The fitting portion 131 is internally fitted into the tubular portion 125 when the first portion 115a is attached to the first receiving portion 111. Then, the protruding portion 132 projects in the axial direction to one end of the axially both ends of the fitting portion 131 in the first portion 115a (the first fluid device 1 side of the fitting portion 131). Is formed in.

突出部１３２は、円環状に形成される。突出部１３２は、第１の部分１１５ａが第１受口部１１１に装着された際に、当該突出部１３２の内周側に形成された傾斜面１３５を環状突起１２６のテーパ面１２８に対して圧接させる。傾斜面１３５は、突出部１３２の突出方向（第１流体機器１側）へ向かって漸次拡大するように形成される。傾斜面１３５は、突出部１３２と対向し、突出部１３２の全周にわたって延設される。 The protrusion 132 is formed in an annular shape. When the first portion 115a is attached to the first receiving portion 111, the protruding portion 132 has an inclined surface 135 formed on the inner peripheral side of the protruding portion 132 with respect to the tapered surface 128 of the annular projection 126. Press contact. The inclined surface 135 is formed so as to gradually expand in the projecting direction (first fluid device 1 side) of the projecting portion 132. The inclined surface 135 faces the protruding portion 132 and extends over the entire circumference of the protruding portion 132.

本実施形態に係る接続体１１５は、その軸方向と直交しかつ当該軸方向において接続体１１５の中央に位置する仮想中央面１４８に対して対称な形状を有する。すなわち、第１の部分１１５ａおよび第２の部分１１５ｂが実質的に同じ形状を有する。 The connecting body 115 according to the present embodiment has a shape orthogonal to the axial direction thereof and symmetrical with respect to the virtual central surface 148 located at the center of the connecting body 115 in the axial direction. That is, the first portion 115a and the second portion 115b have substantially the same shape.

このような流体機器の接続構造により、前述した第１実施形態に係る流体機器の接続構造と同様に、互いに流体的に接続された第１流体機器１および第２流体機器２の設置スペースの省スペース化を図ることができる。また、第１流体機器１と第２流体機器２との接続時、接続体１１５が、第１シール部１２１および第２シール部１２２を形成する。そして、接続体１１５の第１の部分１１５ａの傾斜面１３５が、第１受口部１１１におけるテーパ面１２８に圧接され、第２の部分１１５ｂの傾斜面１３５が、第２受口部１１２におけるテーパ面１２８に圧接される。 With such a fluid device connection structure, the installation space of the first fluid device 1 and the second fluid device 2 that are fluidly connected to each other can be saved as in the fluid device connection structure according to the first embodiment described above. Space can be achieved. Further, when the first fluid device 1 and the second fluid device 2 are connected, the connecting body 115 forms the first seal portion 121 and the second seal portion 122. Then, the inclined surface 135 of the first portion 115a of the connecting body 115 is pressed against the tapered surface 128 of the first receiving portion 111, and the inclined surface 135 of the second portion 115b is tapered at the second receiving portion 112. It is pressed against the surface 128.

よって、第１流体機器１と第２流体機器２との接続部から流体が漏洩することを防止でき、第１流体機器１と第２流体機器２とを従来のチューブ等の部材を用いずに短距離で接続することが可能となる。 Therefore, it is possible to prevent fluid from leaking from the connection portion between the first fluid device 1 and the second fluid device 2, and the first fluid device 1 and the second fluid device 2 can be connected to each other without using a conventional member such as a tube. It is possible to connect in a short distance.

図６は、本発明の第３実施形態に係る流体機器の接続構造の断面図である。同図に示すように、本実施形態に係る流体機器の接続構造は、第１受口部１５１と接続体１５５との間をシールする第１シール部１６１に関する構成、および、第２受口部１５２と接続体１５５との間をシールするための第２シール部１６２に関する構成が、前述の第１実施形態に係る流体機器の接続構造と相違する。 FIG. 6 is a cross-sectional view of a connection structure of a fluid device according to a third embodiment of the present invention. As shown in the figure, the connection structure of the fluid device according to the present embodiment includes a configuration relating to a first seal portion 161 that seals between the first socket portion 151 and the connecting body 155, and a second socket portion. The configuration of the second seal portion 162 for sealing between the 152 and the connecting body 155 is different from the connection structure of the fluid device according to the first embodiment described above.

第１受口部１５１は、第１流体機器１に適用されるものであり、本実施形態においては第１流体機器１のケーシング３５と一体化されたものである。第１受口部１５１の外周には、第１ネジ２３が第１受口部１５１の軸方向に沿って形成される。第１ネジ２３は、雄ネジから構成される。 The first receiving portion 151 is applied to the first fluid device 1, and is integrated with the casing 35 of the first fluid device 1 in the present embodiment. A first screw 23 is formed on the outer periphery of the first receiving portion 151 along the axial direction of the first receiving portion 151. The first screw 23 is composed of a male screw.

第１受口部１５１は、筒部１６５と、突出部１６６とを有する。筒部１６５は、段差を内周に有する円筒体からなり、ケーシング３５から離れる方向に向かって突出するように設けられる。筒部１６５は、ケーシング３５に形成される第１流体流路２１の開口部近傍に設けられる。 The first receiving portion 151 has a tubular portion 165 and a protruding portion 166. The tubular portion 165 is formed of a cylindrical body having a step on the inner circumference, and is provided so as to project in a direction away from the casing 35. The tubular portion 165 is provided in the vicinity of the opening of the first fluid flow path 21 formed in the casing 35.

筒部１６５は、段差部１６７よりも軸方向一方側（第１受口部１５１の開口部側）に、第１筒状部分１６５ａを有する。この第１筒状部分１６５ａは、接続体１５５の一部を嵌め込むことができるように形成される。この第１筒状部分１６５ａは、嵌込後の接続体１５５の一部に対して概ねの領域で隙間なく配置される。 The tubular portion 165 has a first tubular portion 165a on one side in the axial direction (the opening side of the first receiving portion 151) with respect to the step portion 167. The first tubular portion 165a is formed so that a part of the connecting body 155 can be fitted. The first tubular portion 165a is arranged without a gap in a general area with respect to a part of the connecting body 155 after fitting.

筒部１６５は、段差部１６７よりも軸方向他方側（第１流体機器１側）に、第２筒状部分１６５ｂを有する。この第２筒状部分１６５ｂは、第１流体流路２１の流路径と略同一の内径を有し、かつ、接続体１１５の内径と略同一の内径を有する。第２筒状部分１６５ｂは、第１受口部１５１により第１流体機器１と接続体１５５とを流体的に接続させるべく、第１流体流路２１と接続体１５５の内部空間１７８とを連通させるように第１流体機器１と接続体１５５との間に配置される。 The tubular portion 165 has a second tubular portion 165b on the other side (first fluid device 1 side) in the axial direction from the step portion 167. The second tubular portion 165b has substantially the same inner diameter as the flow path diameter of the first fluid flow path 21, and has substantially the same inner diameter as the inner diameter of the connecting body 115. The second tubular portion 165b communicates the first fluid flow path 21 with the internal space 178 of the connecting body 155 so that the first fluid device 1 and the connecting body 155 are fluidly connected by the first receiving portion 151. It is arranged between the first fluid device 1 and the connecting body 155 so as to be allowed to do so.

突出部１６６は、環状体からなり、第１筒状部分１６５ａから筒部１６５の軸方向一方側に突出するように設けられる。突出部１６６の内周側は、傾斜面１６８が形成される。傾斜面１６８は、その径が筒部１６５側から突出部１６６の突出端部側（第１受口部１５１の開口部側）へ向かって漸次拡大するように形成される。傾斜面１６８は、突出部１６６の全周にわたって延設される。 The projecting portion 166 is made of an annular body and is provided so as to project from the first tubular portion 165a to one side in the axial direction of the tubular portion 165. An inclined surface 168 is formed on the inner peripheral side of the protruding portion 166. The inclined surface 168 is formed so that its diameter gradually expands from the tubular portion 165 side toward the protruding end portion side of the protruding portion 166 (the opening side of the first receiving portion 151). The inclined surface 168 extends over the entire circumference of the protrusion 166.

本実施形態に係る第２受口部１５２は、第１受口部１５１を仮想中央面１９８において反転させた形状であって、第１受口部１５１と実質的に同じ形状を有する。 The second receiving portion 152 according to the present embodiment has a shape in which the first receiving portion 151 is inverted on the virtual central surface 198, and has substantially the same shape as the first receiving portion 151.

接続体１５５は、第１受口部１５１に対応する第１の部分１５５ａと、第２受口部１５２に対応する第２の部分１５５ｂとを有する。第１の部分１５５ａは、概ね一定の内径を有する円筒体からなり、流体流路を備える。この第１の部分１５５ａの流体流路は、接続体１５５において第１の部分１５５ａに対応する内部空間から形成される。第１の部分１５５ａは、筒部１６５に嵌め込まれ、第１受口部１５１に装着されることにより、この流体流路としての内部空間１７８が第１流体流路２１と接続される。 The connecting body 155 has a first portion 155a corresponding to the first receiving portion 151 and a second portion 155b corresponding to the second receiving portion 152. The first portion 155a comprises a cylindrical body having a substantially constant inner diameter and includes a fluid flow path. The fluid flow path of the first portion 155a is formed from the internal space corresponding to the first portion 155a in the connecting body 155. The first portion 155a is fitted into the tubular portion 165 and attached to the first receiving portion 151, so that the internal space 178 as the fluid flow path is connected to the first fluid flow path 21.

第１の部分１５５ａには、嵌合部１７１と、突出部１７２とが形成される。嵌合部１７１は、円筒状に形成される。嵌合部１７１は、第１の部分１５５ａが第１受口部１５１に装着された際、筒部１６５に対し全周にわたって包囲された状態で嵌合される。第１の部分１５５ａの嵌合部１７１の端部（接続体１５の軸方向中途部）には、突出部１７２が接続体１５５の径方向外方へ突出するように設けられる。 A fitting portion 171 and a protruding portion 172 are formed in the first portion 155a. The fitting portion 171 is formed in a cylindrical shape. When the first portion 155a is attached to the first receiving portion 151, the fitting portion 171 is fitted to the tubular portion 165 in a state of being surrounded over the entire circumference. A protruding portion 172 is provided at the end of the fitting portion 171 of the first portion 155a (an axially intermediate portion of the connecting body 15) so as to project outward in the radial direction of the connecting body 155.

突出部１７２は、円環状に形成される。突出部１７２は、第１の部分１５５ａが第１受口部１５１に装着された際に、当該突出部１７２の外周面であるテーパ面１７５を突出部１６６の傾斜面１６８に圧接させる。テーパ面１７５は、その径が筒部１６５側から径方向外側に向かうにつれて、漸次拡大するように形成される。テーパ面１７５は、突出部１７２の全周にわたって延設される。 The protrusion 172 is formed in an annular shape. When the first portion 155a is attached to the first receiving portion 151, the protruding portion 172 presses the tapered surface 175, which is the outer peripheral surface of the protruding portion 172, with the inclined surface 168 of the protruding portion 166. The tapered surface 175 is formed so that its diameter gradually expands from the tubular portion 165 side toward the outer side in the radial direction. The tapered surface 175 extends over the entire circumference of the protrusion 172.

本実施形態に係る接続体１５５は、その軸方向と直交しかつ当該軸方向において接続体１５５の中央に位置する仮想中央面１９８に対して対称な形状を有する。すなわち、第１の部分１５５ａおよび第２の部分１５５ｂが実質的に同じ形状を有する。 The connecting body 155 according to the present embodiment has a shape orthogonal to the axial direction thereof and symmetrical with respect to the virtual central surface 198 located at the center of the connecting body 155 in the axial direction. That is, the first portion 155a and the second portion 155b have substantially the same shape.

このような構成により、第１流体機器１と第２流体機器２との接続時に、接続体１５５が、第１シール部１６１および第２シール部１６２を形成する。そして、接続体１５５の第１の部分１５５ａのテーパ面１７５が、第１受口部１５１における傾斜面１６８に圧接され、第２の部分１５５ｂのテーパ面１７５が、第２受口部１５２における傾斜面１６８に圧接される。これにより、流体が第１流体機器１と第２流体機器２との接続部から漏洩することを防止でき、第１流体機器１と第２流体機器２とを従来のチューブ等の部材を用いずに短距離で接続することが可能となる。 With such a configuration, when the first fluid device 1 and the second fluid device 2 are connected, the connecting body 155 forms the first seal portion 161 and the second seal portion 162. Then, the tapered surface 175 of the first portion 155a of the connecting body 155 is pressed against the inclined surface 168 of the first receiving portion 151, and the tapered surface 175 of the second portion 155b is inclined at the second receiving portion 152. It is pressed against the surface 168. As a result, it is possible to prevent the fluid from leaking from the connection portion between the first fluid device 1 and the second fluid device 2, and the first fluid device 1 and the second fluid device 2 can be connected to each other without using a conventional member such as a tube. It is possible to connect to a short distance.

よって、第１実施形態に係る流体機器の接続構造と同様に、互いに流体的に接続された第１流体機器１および第２流体機器２の設置スペースの省スペース化を図ることができる。 Therefore, similarly to the connection structure of the fluid devices according to the first embodiment, it is possible to save the installation space of the first fluid device 1 and the second fluid device 2 which are fluidly connected to each other.

図７は、本発明の第４実施形態に係る流体機器の接続構造の断面図である。同図に示すように、本実施形態に係る流体機器の接続構造は、第１受口部２１１と接続体２１５との間をシールする第１シール部２２１に関する構成、および、第２受口部２１２と接続体２１５との間をシールする第２シール部２２２に関する構成が、前述の第１実施形態に係る流体機器の接続構造と相違する。 FIG. 7 is a cross-sectional view of the connection structure of the fluid device according to the fourth embodiment of the present invention. As shown in the figure, the connection structure of the fluid device according to the present embodiment includes a configuration relating to a first seal portion 221 that seals between the first socket portion 211 and the connecting body 215, and a second socket portion. The configuration of the second seal portion 222 that seals between the 212 and the connecting body 215 is different from the connection structure of the fluid device according to the first embodiment described above.

本実施形態において、第１受口部２１１は、第１流体機器１に適用されるものであり、本実施形態においては第１流体機器１のケーシング３５と一体化されたものである。第１受口部２１１は、外筒部２２５と、内筒部２２６とを有する。外筒部２２５は、概ね一定の内径を有する円筒体からなり、ケーシング３５の外部に向かって突出し、ケーシング３５における第１流体流路２１の近傍に設けられる。 In the present embodiment, the first receiving portion 211 is applied to the first fluid device 1, and in the present embodiment, the first receiving portion 211 is integrated with the casing 35 of the first fluid device 1. The first receiving portion 211 has an outer cylinder portion 225 and an inner cylinder portion 226. The outer cylinder portion 225 is made of a cylindrical body having a substantially constant inner diameter, projects toward the outside of the casing 35, and is provided in the vicinity of the first fluid flow path 21 in the casing 35.

外筒部２２５は、その突出端部（軸方向一方の端部）側から接続体２１５の一部を嵌め込むことができるように形成される。外筒部２２５は、嵌込後の接続体２１５の一部に対して略隙間なく配置される。また、外筒部２２５の外周には、第１ネジ２３が外筒部２２５の軸方向に沿って形成される。第１ネジ２３は、雄ネジから構成される。 The outer cylinder portion 225 is formed so that a part of the connecting body 215 can be fitted from the protruding end portion (one end in the axial direction) side. The outer cylinder portion 225 is arranged with substantially no gap with respect to a part of the connecting body 215 after fitting. Further, a first screw 23 is formed on the outer circumference of the outer cylinder portion 225 along the axial direction of the outer cylinder portion 225. The first screw 23 is composed of a male screw.

内筒部２２６は、外筒部２２５の内径よりも小さい概ね一定の外径を有する円筒体である。内筒部２２６は、外筒部２２５の突出方向（第１受口部２１１の軸方向一方）と同方向へ突出し、ケーシング３５における第１流体流路２１の近傍に設けられる。内筒部２２６は、外筒部２２５に対して所定間隔を隔てるように径方向内方に配置されるとともに、外筒部２２５と同方向に延長する。 The inner cylinder portion 226 is a cylindrical body having a substantially constant outer diameter smaller than the inner diameter of the outer cylinder portion 225. The inner cylinder portion 226 protrudes in the same direction as the protrusion direction of the outer cylinder portion 225 (one of the axial directions of the first receiving portion 211), and is provided in the vicinity of the first fluid flow path 21 in the casing 35. The inner cylinder portion 226 is arranged inward in the radial direction so as to be separated from the outer cylinder portion 225 by a predetermined interval, and extends in the same direction as the outer cylinder portion 225.

ここで、内筒部２２６は、その突出端部が外筒部２２５の突出端部よりも突出方向側（第１流体機器１、第２流体機器２から離れる方向）に位置するように、即ちケーシング３５から外筒部２２５よりも突出するように設けられる。こうして、第１受口部２１１が、外筒部２２５の軸方向（第１受口部２１１の軸方向）において外筒部２２５の軸方向中途部で二重筒状を呈するように形成される。 Here, the inner cylinder portion 226 is positioned so that the protruding end portion thereof is located on the protruding direction side (the direction away from the first fluid device 1 and the second fluid device 2) with respect to the protruding end portion of the outer cylinder portion 225, that is. It is provided so as to protrude from the casing 35 with respect to the outer cylinder portion 225. In this way, the first receiving portion 211 is formed so as to exhibit a double tubular shape in the axial direction of the outer cylinder portion 225 in the axial direction of the outer cylinder portion 225 (axial direction of the first receiving portion 211). ..

内筒部２２６は、第１流体流路２１の流路径と略同一の内径を有し、かつ接続体２１５の内径と略同一の内径を有する。内筒部２２６は、第１流体機器１と接続体２１５との間に配置され、第１流体流路２１と接続体２１５の内部空間とを連通させる。第１受口部２１１により第１流体機器１と接続体２１５とが流体的に接続される。 The inner cylinder portion 226 has an inner diameter substantially the same as the inner diameter of the flow path of the first fluid flow path 21, and has an inner diameter substantially the same as the inner diameter of the connecting body 215. The inner cylinder portion 226 is arranged between the first fluid device 1 and the connecting body 215, and communicates the first fluid flow path 21 with the internal space of the connecting body 215. The first fluid device 1 and the connecting body 215 are fluidly connected by the first receiving portion 211.

内筒部２２６の突出端部は、内筒部２２６の突出方向へ向かって先細り状に形成される。内筒部２２６の突出端部の外周面には、テーパ面２２８が形成される。テーパ面２２８は、その径が内筒部２２６の突出方向（第１受口部２１１の軸方向一方）である仮想中央面２４８側へ向かって漸次縮小するように形成される。テーパ面２２８は、内筒部２２６の突出端部の全周にわたって延設される。 The protruding end of the inner cylinder 226 is formed in a tapered shape in the protruding direction of the inner cylinder 226. A tapered surface 228 is formed on the outer peripheral surface of the protruding end of the inner cylinder portion 226. The tapered surface 228 is formed so that its diameter gradually decreases toward the virtual central surface 248, which is the protruding direction of the inner cylinder portion 226 (one of the axial directions of the first receiving portion 211). The tapered surface 228 extends over the entire circumference of the protruding end of the inner cylinder 226.

第２受口部２１２は、本実施形態においては第１受口部２１１と実質的に同じ形状を有する。 In the present embodiment, the second receiving portion 212 has substantially the same shape as the first receiving portion 211.

接続体２１５は、第１受口部２１１に対応する第１の部分２１５ａと、第２受口部２１２に対応する第２の部分２１５ｂとを有する。第１の部分２１５ａは、円筒体からなり、流体流路を備える。この第１の部分２１５ａの流体流路は、接続体２１５において第１の部分２１５ａに対応する内部空間から形成される。第１の部分２１５ａは、内筒部２２６に嵌合された状態で第１受口部２１１に装着されることにより、第１の部分２１５ａの流体流路が第１流体流路２１と接続される。 The connecting body 215 has a first portion 215a corresponding to the first receiving portion 211 and a second portion 215b corresponding to the second receiving portion 212. The first portion 215a is made of a cylindrical body and includes a fluid flow path. The fluid flow path of the first portion 215a is formed from the internal space corresponding to the first portion 215a in the connecting body 215. The first portion 215a is mounted on the first receiving portion 211 in a state of being fitted to the inner cylinder portion 226, so that the fluid flow path of the first portion 215a is connected to the first fluid flow path 21. NS.

第１の部分２１５ａには、嵌合部２３１と、突出部２３２とが含まれる。嵌合部２３１は、円筒状に形成される。嵌合部２３１は、第１の部分２１５ａが第１受口部２１１に装着された際、内筒部２２６に外嵌される。そして、嵌合部２３１の軸方向両端部のうちの一方の端部（接続体２１５の中途部）において、突出部２３２が接続体２１５の径方向内方へ突出するように設けられる。 The first portion 215a includes a fitting portion 231 and a protruding portion 232. The fitting portion 231 is formed in a cylindrical shape. The fitting portion 231 is externally fitted to the inner cylinder portion 226 when the first portion 215a is attached to the first receiving portion 211. Then, at one end of the fitting portion 231 in the axial direction (the middle portion of the connecting body 215), the protruding portion 232 is provided so as to project inward in the radial direction of the connecting body 215.

突出部２３２は、円環状に形成される。突出部２３２は、第１の部分２１５ａが第１受口部２１１に装着された際に当該突出部２３２の内周面にある傾斜面２３５を内筒部２２６のテーパ面２２８に圧接させる。傾斜面２３５は、その径が仮想中央面２４８から第１流体機器１又は第２流体機器２側へ向かって漸次拡大するように形成される。傾斜面２３５は、突出部２３２の全周にわたって延設される。 The protrusion 232 is formed in an annular shape. When the first portion 215a is attached to the first receiving portion 211, the protruding portion 232 presses the inclined surface 235 on the inner peripheral surface of the protruding portion 232 with the tapered surface 228 of the inner cylinder portion 226. The inclined surface 235 is formed so that its diameter gradually expands from the virtual central surface 248 toward the first fluid device 1 or the second fluid device 2. The inclined surface 235 extends over the entire circumference of the protrusion 232.

本実施形態において、接続体２１５は、その軸方向と直交しかつ当該軸方向において接続体２１５の中央に位置する中央面２４８に対して対称な形状を有する。すなわち、第１の部分２１５ａおよび第２の部分２１５ｂが実質的に同じ形状を有する。 In the present embodiment, the connecting body 215 has a shape orthogonal to the axial direction thereof and symmetrical with respect to the central surface 248 located at the center of the connecting body 215 in the axial direction. That is, the first portion 215a and the second portion 215b have substantially the same shape.

このような流体機器の接続構造により、第１流体機器１と第２流体機器２との接続時、接続体２１５が、第１シール部２２１及び第２シール部２２２を形成する。そして、接続体２１５の第１の部分２１５ａの傾斜面２３５が、第１受口部２１１におけるテーパ面２２８に圧接され、第２の部分２１５ｂの傾斜面２３５が、第２受口部２１２におけるテーパ面２２８に圧接される。これにより、第１流体機器１と第２流体機器２との接続部から流体が漏洩することを防止でき、第１流体機器１と第２流体機器２とを従来のチューブ等の部材を用いずに短距離で接続することが可能となる。 With such a connection structure of the fluid device, when the first fluid device 1 and the second fluid device 2 are connected, the connecting body 215 forms the first seal portion 221 and the second seal portion 222. Then, the inclined surface 235 of the first portion 215a of the connecting body 215 is pressed against the tapered surface 228 of the first receiving portion 211, and the inclined surface 235 of the second portion 215b is tapered at the second receiving portion 212. It is pressed against the surface 228. As a result, it is possible to prevent fluid from leaking from the connection portion between the first fluid device 1 and the second fluid device 2, and the first fluid device 1 and the second fluid device 2 can be connected to each other without using a conventional member such as a tube. It is possible to connect to a short distance.

よって、第１実施形態に係る流体機器の接続構造と同様に、互いに流体的に接続された第１流体機器１および第２流体機器２の設置スペースの省スペース化を図ることができる。 Therefore, similarly to the connection structure of the fluid devices according to the first embodiment, it is possible to save the installation space of the first fluid device 1 and the second fluid device 2 which are fluidly connected to each other.

上述の教示を考慮すれば、本発明が多くの変更形態および変形形態をとり得ることは明らかである。したがって、本発明が、添付の特許請求の範囲内において、本明細書に記載された以外の方法で実施され得ることを理解されたい。 In view of the above teachings, it is clear that the present invention can take many modified and modified forms. Therefore, it should be understood that the present invention may be practiced in a manner other than that described herein, within the scope of the appended claims.

１ 第１流体機器
２ 第２流体機器
１１ 第１受口部
１２ 第２受口部
１３ 第１筒状部材
１４ 第２筒状部材
１５ 接続体
２１ 第１流体流路
２３ 第１ネジ（固定用ネジ）
２５ 第２流体流路
２６ 第２ネジ（固定用ネジ）
２８ 第３ネジ（固定用ネジ）
２９ 第４ネジ（固定用ネジ）
５３ 第１螺合部
５４ 第２螺合部
５６ 第５ネジ（第１螺合部用ネジ）
５７ 第６ネジ（第２螺合部用ネジ）
８８ 張出部
１１１ 第１受口部
１１２ 第２受口部
１１５ 接続体
１５１ 第１受口部
１５２ 第２受口部
１５５ 接続体
２１１ 第１受口部
２１２ 第２受口部
２１５ 接続体 1 1st fluid equipment 2 2nd fluid equipment 11 1st receiving part 12 2nd receiving part 13 1st tubular member 14 2nd tubular member 15 Connector 21 1st fluid flow path 23 1st screw (for fixing) screw)
25 2nd fluid flow path 26 2nd screw (fixing screw)
28 Third screw (fixing screw)
29 4th screw (fixing screw)
53 1st screw part 54 2nd screw part 56 5th screw (screw for 1st screw part)
57 6th screw (screw for 2nd screw part)
88 Overhanging part 111 1st receiving part 112 2nd receiving part 115 connecting body 151 1st receiving part 152 2nd receiving part 155 connecting body 211 1st receiving part 212 2nd receiving part 215 connecting body

Claims (4)

第１流体機器と第２流体機器とを接続する流体機器の接続構造であって、
前記第１流体機器の第１流体流路に接続され、前記第１流体機器に設けられた筒状の第１受口部と、
前記第２流体機器の第２流体流路に接続され、前記第２流体機器に設けられた筒状の第２受口部と、
前記第１受口部に設けられ、第１螺合部を外周側に有する第１筒状部材と、
前記第２受口部に設けられ、第１螺合部と螺合可能な第２螺合部を内周側に有する第２筒状部材と、
前記第１受口部と前記第２受口部との間に設けられ、前記第１受口部との間をシールし、かつ、前記第２受口部との間をシールする接続体と
を備え、
前記第１筒状部材と前記第２筒状部材とが、前記第１螺合部と前記第２螺合部とにより互いに固定され、
前記第１受口部と前記第２受口部とは同じ形状を有し、それぞれ、軸方向へ開口した環状の溝部を含み、
前記接続体は、軸方向における両側へ突出した環状の突部を含み、
前記第１受口部の溝部と前記第２受口部の溝部とのそれぞれに前記接続体の突部のそれぞれが圧入されて、各溝部と各突部との間に、シール力が径方向に作用するシール領域が形成される
ことを特徴とする流体機器の接続構造。 It is a connection structure of the fluid equipment that connects the first fluid equipment and the second fluid equipment.
A tubular first receiving portion connected to the first fluid flow path of the first fluid device and provided in the first fluid device.
A tubular second receiving portion connected to the second fluid flow path of the second fluid device and provided in the second fluid device,
A first tubular member provided in the first receiving portion and having a first screwed portion on the outer peripheral side, and
A second tubular member provided on the second receiving portion and having a second screwed portion that can be screwed with the first screwed portion on the inner peripheral side.
With a connecting body provided between the first receiving portion and the second receiving portion, sealing between the first receiving portion and sealing between the second receiving portion and the second receiving portion. With
The first tubular member and the second tubular member are fixed to each other by the first screwed portion and the second screwed portion.
The first receiving portion and the second receiving portion have the same shape, and each includes an annular groove portion that opens in the axial direction.
The connecting body includes an annular protrusion protruding from both sides in the axial direction.
Each of the protrusions of the connecting body is press-fitted into each of the groove of the first socket and the groove of the second socket, and a sealing force is applied in the radial direction between each groove and each protrusion. A fluid device connection structure, characterized in that a sealing area is formed that acts on the fluid. 前記第１筒状部材と前記第２筒状部材とが、径方向に対向して配置される請求項１に記載の流体機器の接続構造。 The connection structure for a fluid device according to claim 1, wherein the first tubular member and the second tubular member are arranged so as to face each other in the radial direction. 前記第１受口部と前記第１筒状部材、及び前記第２受口部と前記第２筒状部材の少なくとも一方は、固定用ネジを用いて固定されており、
前記第１螺合部は、第１螺合部用ネジを有し、
前記第２螺合部は、前記第１螺合部用ネジに締め付けられ、前記第２筒状部材が前記第１筒状部材から離反することを規制する第２螺合部用ネジを有し、
前記第１螺合部用ネジに対する前記第２螺合部用ネジの締付方向が、前記固定用ネジの締付方向と反対である、請求項１または請求項２に記載の流体機器の接続構造。 At least one of the first receiving portion and the first tubular member, and the second receiving portion and the second tubular member is fixed by using a fixing screw.
The first screwed portion has a screw for the first screwed portion and has a screw.
The second screwed portion has a second screwed portion screw that is fastened to the first screwed portion screw and regulates the second tubular member from separating from the first tubular member. ,
The connection of a fluid device according to claim 1 or 2, wherein the tightening direction of the second screw portion screw to the first screw portion screw is opposite to the tightening direction of the fixing screw. Construction. 前記接続体が、前記第１受口部と前記第２受口部との間に位置する張出部を有する請求項１から請求項３のいずれか一項に記載の流体機器の接続構造。 The connection structure for a fluid device according to any one of claims 1 to 3, wherein the connecting body has an overhanging portion located between the first receiving portion and the second receiving portion.
JP2017130824A 2017-07-04 2017-07-04 Connection structure of fluid equipment Active JP6913540B2 (en)

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JP2017130824A JP6913540B2 (en) 2017-07-04 2017-07-04 Connection structure of fluid equipment
EP18828286.7A EP3650737A4 (en) 2017-07-04 2018-06-15 Connection structure for fluid device
CN201880028421.1A CN110573783B (en) 2017-07-04 2018-06-15 Connection structure of fluid equipment
US16/608,402 US11953135B2 (en) 2017-07-04 2018-06-15 Fitting assembly for fluid device
PCT/JP2018/023024 WO2019009049A1 (en) 2017-07-04 2018-06-15 Connection structure for fluid device
KR1020197031399A KR102566389B1 (en) 2017-07-04 2018-06-15 Connection structure of fluid equipment
TW107122452A TWI767020B (en) 2017-07-04 2018-06-29 Connection structure of fluid machines

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US1794905A (en) * 1925-10-01 1931-03-03 Samuel M Kass Pipe joint
JPS57117491U (en) * 1981-01-14 1982-07-21
JPH07233887A (en) * 1993-12-27 1995-09-05 Nikkiso Co Ltd Annular sealing member and flange
US5547229A (en) * 1994-05-13 1996-08-20 Eidsmore; Paul G. Fluid coupling assembly
US6318766B1 (en) * 1997-09-15 2001-11-20 Swagelok Company Face seal gland with raised peripheral ring having circumferentially spaced recesses
JP4221348B2 (en) * 2004-09-17 2009-02-12 日本ピラー工業株式会社 Connection structure between flange piping and connection structure between flange piping and fluid equipment
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JP2017067176A (en) * 2015-09-30 2017-04-06 イハラサイエンス株式会社 Joint structure

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