JP2005308087A - Fluid storing device - Google Patents

Fluid storing device Download PDF

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JP2005308087A
JP2005308087A JP2004125502A JP2004125502A JP2005308087A JP 2005308087 A JP2005308087 A JP 2005308087A JP 2004125502 A JP2004125502 A JP 2004125502A JP 2004125502 A JP2004125502 A JP 2004125502A JP 2005308087 A JP2005308087 A JP 2005308087A
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base
pressure
tank
base part
cylindrical
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Japanese (ja)
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Yoshimasa Negishi
良昌 根岸
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Toyota Motor Corp
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Toyota Motor Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0308—Protective caps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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  • Fuel Cell (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a fluid storing device for reliably preventing the displacement of a sealing means, such as an in-tank valve, by the high pressure of fluid stored in the device body without increasing the size of a mouthpiece section. <P>SOLUTION: An external thread 38 is formed at the outer periphery section of the mouthpiece section 16 in a tank 10, and an internal thread 36 of a box nut 32 is screwed to the external thread 38, thus fitting the box nut 32 to the mouthpiece section 16. In the in-tank valve 22, a flange section 30 is pressed to a flange section 40 of the box nut 32 while a valve body 24 is being inserted into the mouthpiece section 16. As a result, the area between the flange section 30 and the upper end section of the mouthpiece section 16 is sealed. Although the pressure of fluid stored in the tank body 12 operates on the box nut 32 via the in-tank valve 22, the external thread 38 becomes a pressure reception section and the displacement in the box nut 22 is regulated, thus regulating the displacement of the in-tank valve 22. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、ガス等の流体を貯蔵するための流体貯蔵装置に係り、特に、高圧のガスの貯蔵に対して好適な流体貯蔵装置に関する。   The present invention relates to a fluid storage device for storing a fluid such as a gas, and more particularly to a fluid storage device suitable for storing a high-pressure gas.

近年、車両用の動力用エネルギー源等として実用的な所謂燃料電池の開発が進められている。この燃料電池は、水素と酸素との電気化学反応を利用して発電するシステムであり、その一例としては、固体高分子型燃料電池がある。この固体高分子型燃料電池は、複数のセルを積層することで構成されたスタックを備えている。スタックを構成するセルは、アノード（燃料極）とカソード（空気極）とを備えており、これらのアノードとカソードとの間には、イオン交換基としてスルフォン酸基を有する固体高分子電解質膜が介在している。   In recent years, development of a so-called fuel cell that is practical as a power energy source for vehicles has been underway. This fuel cell is a system that generates electric power by utilizing an electrochemical reaction between hydrogen and oxygen. An example thereof is a polymer electrolyte fuel cell. This polymer electrolyte fuel cell includes a stack constituted by stacking a plurality of cells. The cell constituting the stack includes an anode (fuel electrode) and a cathode (air electrode), and a solid polymer electrolyte membrane having a sulfonic acid group as an ion exchange group is interposed between the anode and the cathode. Intervene.

アノードには燃料ガス（水素ガス又は炭化水素を改質して水素リッチにした改質水素）を含む燃料ガスが供給され、カソードには酸化剤として酸素を含むガス、一例として空気が供給される。アノードに燃料ガスが供給されることで、燃料ガスに含まれる水素がアノードを構成する触媒層の触媒と反応し、これによって水素イオンが発生される。発生した水素イオンは固体高分子電解質膜を通過して、カソードで酸素と電気化学反応を起す。この電気化学反応により発電される構成となっている。   A fuel gas containing a fuel gas (hydrogen gas or reformed hydrogen made by reforming hydrocarbons to be hydrogen rich) is supplied to the anode, and a gas containing oxygen as an oxidant, for example, air is supplied to the cathode. . By supplying the fuel gas to the anode, hydrogen contained in the fuel gas reacts with the catalyst of the catalyst layer constituting the anode, thereby generating hydrogen ions. The generated hydrogen ions pass through the solid polymer electrolyte membrane and cause an electrochemical reaction with oxygen at the cathode. It has a configuration in which power is generated by this electrochemical reaction.

ところで、燃料電池には、上記のように燃料ガスとして水素ガスや炭化水素を改質して水素リッチにした改質水素が用いられる。このような燃料ガスをタンクに充填するにあたっては、できるだけ充填量が多い方が好ましいが、車両に搭載することを考えるとタンクは小さい方が好ましい。このため、下記特許文献１に開示されているような高圧ガス貯蔵用のガスタンクに燃料ガスを非常に高圧の状態で充填する構成になる。
特開２００２−１８１２９５公報 By the way, in the fuel cell, as described above, reformed hydrogen obtained by reforming hydrogen gas or hydrocarbons to make hydrogen rich is used as the fuel gas. When filling such a fuel gas into the tank, it is preferable that the filling amount be as large as possible, but considering that it is mounted on a vehicle, the smaller tank is preferable. For this reason, the fuel tank is filled with fuel gas in a very high pressure state as disclosed in Patent Document 1 below.
JP 2002-181295 A

ところで、上記特許文献１に開示されているガスタンクでは、ガスタンクの開口端であるトップボス（口金部）にインタンク電磁弁を装着している。これにより、インタンク電磁弁に設けられたフランジ部分をトップボスの端部に圧接させてを封止していると共に、適宜にガスタンクの内部のガスを送給できる構成となっている。   By the way, in the gas tank disclosed in Patent Document 1, an in-tank electromagnetic valve is mounted on a top boss (base portion) that is an open end of the gas tank. Thus, the flange portion provided in the in-tank solenoid valve is sealed by being brought into pressure contact with the end portion of the top boss, and the gas inside the gas tank can be appropriately fed.

ここで、ガスタンク内にガスを高圧の状態で充填すると、ガスタンク内のガス圧がトップボスからインタンク電磁弁を押し出そうとする。特許文献１に開示されたガスタンクは、トップボスの内周部に形成された雌ねじにインタンク電磁弁の外周部に形成された雄ねじを螺合させてインタンク電磁弁をトップボスにねじ込むことでトップボスにインタンク電磁弁を装着する構造である。したがって、インタンク電磁弁の雄ねじの斜面は、ガス圧に基づく押圧力でトップボスの内周部に形成された雌ねじの斜面を押圧する。   Here, when the gas is filled in the gas tank in a high pressure state, the gas pressure in the gas tank tends to push out the in-tank electromagnetic valve from the top boss. In the gas tank disclosed in Patent Document 1, a male screw formed on the outer peripheral portion of the in-tank solenoid valve is screwed into a female screw formed on the inner peripheral portion of the top boss, and the in-tank solenoid valve is screwed into the top boss. In-tank solenoid valve is mounted on the top boss. Therefore, the slope of the male thread of the in-tank solenoid valve presses the slope of the female thread formed on the inner peripheral portion of the top boss with a pressing force based on the gas pressure.

このため、ガスタンクの内部に充填するガスの圧力を高くするほどトップボスの内周部に形成する雌ねじ部分の機械的強度を高くしなければならない。このような雌ねじの強度を高くするための一手段としては、雄ねじから押圧力を受ける雌ねじの受圧面積を大きくすればよい。しかしながら、このように雌ねじの受圧面積を大きくすることは、トップボスの内径寸法を大きくしたり、トップボスの開口方向に沿った全長を長くしなければならない。   For this reason, the mechanical strength of the internal thread portion formed on the inner peripheral portion of the top boss must be increased as the pressure of the gas filled in the gas tank is increased. One means for increasing the strength of such an internal thread is to increase the pressure receiving area of the internal thread that receives a pressing force from the external thread. However, increasing the pressure receiving area of the female screw in this way requires increasing the inner diameter of the top boss or increasing the total length along the opening direction of the top boss.

本発明は、上記事実を考慮して、口金部を大型化することなく、装置本体内に貯蔵した流体の高い圧力によるインタンクバルブ等の封止手段の変位を確実に防止できる流体貯蔵装置を得ることが目的である。   In view of the above facts, the present invention provides a fluid storage device that can reliably prevent displacement of sealing means such as an in-tank valve due to high pressure of fluid stored in the device body without increasing the size of the base. The purpose is to obtain.

請求項１に記載の本発明に係る流体貯蔵装置は、内部に大気圧よりも高圧の流体を貯蔵する装置本体と、外周形状が円形で両端が開口した筒状に形成されると共に、貫通方向一方の端部の側から他方の端部の側へ向いた圧力を受けることが可能な受圧部が外周部に設けられ、前記貫通方向一方の開口端側で前記装置本体に一体的に結合されて内部が前記装置本体の内部に連通した口金部と、前記口金部の開口端から前記口金部の内側に嵌挿される嵌挿部を有すると共に、前記口金部に対する前記嵌挿部の嵌挿状態で前記口金部の開口方向に沿って前記口金部の前記装置本体とは反対側の開口端に当接して前記口金部の開口端との間を封止する当接部が前記嵌挿部に一体形成された封止手段と、前記口金部を外側から被覆可能な筒状に形成されると共に、前記圧力の向きとは反対側から前記受圧部に係合する係合部を有し、前記係合部が前記受圧部に係合した状態では前記圧力の向きと同方向への変位が規制される筒状部を有すると共に、前記筒状部を前記口金部の外周部を被覆した状態で前記当接部を介して前記口金部とは反対側から前記当接部に干渉して、前記口金部の開口端から離間する方向への前記当接部の変位を規制する干渉部が前記筒状部の内周部から延設された保持手段と、を備えている。   The fluid storage device according to the first aspect of the present invention includes a device main body that stores a fluid having a pressure higher than atmospheric pressure therein, a cylindrical shape having a circular outer periphery and open at both ends, and a penetrating direction. A pressure receiving portion capable of receiving a pressure directed from one end side to the other end side is provided on the outer peripheral portion, and is integrally coupled to the apparatus main body at one opening end side in the penetration direction. And a fitting part inserted into the base part from the opening end of the base part, and a fitting state of the fitting part with respect to the base part. A contact portion that contacts the opening end of the base portion opposite to the device main body along the opening direction of the base portion and seals between the opening end of the base portion in the fitting insertion portion. It is formed in a cylindrical shape that can cover the sealing part formed integrally and the base part from the outside. And an engaging portion that engages with the pressure receiving portion from a side opposite to the direction of the pressure, and in a state where the engaging portion engages with the pressure receiving portion, displacement in the same direction as the direction of the pressure is performed. While having a cylindrical portion to be regulated, the cylindrical portion interferes with the contact portion from the side opposite to the base portion through the contact portion in a state of covering the outer peripheral portion of the base portion, The interference part which controls the displacement of the said contact part to the direction away from the opening end of the said nozzle | cap | die part is provided with the holding means extended from the inner peripheral part of the said cylindrical part.

請求項１に記載の本発明に係る流体貯蔵装置では、装置本体に口金部が形成されており、この口金部に封止手段の嵌挿部が嵌挿されると、嵌挿部に形成された当接部が口金部の開口端に当接し、これにより、口金部が封止される。さらに、封止手段が口金部に装着された状態で保持手段の筒状部が口金部を覆うように口金部に嵌められる。このように、口金部に筒状部が嵌められた状態では、当接部を介して口金部とは反対側から干渉部が当接部に干渉する。   In the fluid storage device according to the first aspect of the present invention, the base portion is formed in the device main body, and when the insertion portion of the sealing means is inserted into the base portion, the insertion portion is formed. The abutting part comes into contact with the opening end of the base part, and thereby the base part is sealed. Further, the cylindrical part of the holding means is fitted to the base part so as to cover the base part while the sealing means is mounted on the base part. Thus, in a state where the cylindrical portion is fitted to the base portion, the interference portion interferes with the contact portion from the side opposite to the base portion via the contact portion.

この状態で、装置本体内に貯蔵された流体の圧力が嵌挿部を外部に押し出そうとすると、嵌挿部に形成された当接部が干渉部に干渉される。この状態では、当接部が干渉部を圧力の作用方向に押圧する。当接部に押圧された干渉部は筒状部を伴い移動しようとするが、筒状部が上記の圧力の作用方向に移動しようとすると、係合部が受圧部に干渉されて圧力の作用方向への係合部の移動が受圧部に規制される。   In this state, when the pressure of the fluid stored in the apparatus main body tries to push the insertion portion outward, the contact portion formed in the insertion portion is interfered with the interference portion. In this state, the contact portion presses the interference portion in the pressure acting direction. The interference part pressed by the abutting part tries to move with the cylindrical part. However, when the cylindrical part tries to move in the direction of the pressure, the engaging part is interfered with the pressure receiving part and the pressure acts. The movement of the engaging portion in the direction is restricted by the pressure receiving portion.

これにより、筒状部の移動、ひいては干渉部の移動が規制される。このように、圧力の作用方向への干渉部の移動が規制されることで、圧力により口金部から抜け出ようとする封止手段の移動は干渉部により規制される。これにより、口金部に対する封止手段の装着状態が維持される。   As a result, the movement of the cylindrical portion, and hence the movement of the interference portion is restricted. In this way, by restricting the movement of the interference part in the pressure acting direction, the movement of the sealing means that tries to escape from the base part by the pressure is restricted by the interference part. Thereby, the mounting state of the sealing means with respect to the base part is maintained.

ところで、本発明における受圧部と同様の受圧部を口金部の内周部に形成し、嵌挿部の外周部に係合部を形成した場合にも、嵌挿部が口金部から抜け出ようとすると、係合部が受圧部に干渉される。   By the way, even when the pressure receiving part similar to the pressure receiving part in the present invention is formed on the inner peripheral part of the base part and the engaging part is formed on the outer peripheral part of the insertion part, the insertion part tends to come out of the base part. Then, the engaging portion is interfered with the pressure receiving portion.

ここで、受圧部を口金部と同心のリング形状として考えると、受圧部を口金部の内周部に形成した場合には、受圧部の外径寸法は口金部の内径寸法に等しく、受圧部の内径寸法は口金部の内径寸法よりも更に小さくなる。   Here, considering the pressure receiving part as a concentric ring shape with the base part, when the pressure receiving part is formed on the inner peripheral part of the base part, the outer diameter dimension of the pressure receiving part is equal to the inner diameter dimension of the base part. Is smaller than the inner diameter of the base.

これに対し、受圧部を口金部の外周部に形成した場合には、受圧部の内径寸法は口金部の外径寸法に等しく、受圧部の外径寸法は口金部の外径寸法よりも更に大きくなる。   On the other hand, when the pressure receiving part is formed on the outer periphery of the base part, the inner diameter dimension of the pressure receiving part is equal to the outer diameter dimension of the base part, and the outer diameter dimension of the pressure receiving part is further than the outer diameter dimension of the base part. growing.

当然のことながら、口金部の外径寸法は内径寸法よりも大きい。したがって、口金部の開口径方向に沿った受圧部の幅寸法が同じであれば、口金部の内周部に設けられた受圧部の受圧面積よりも口金部の外周部に設けられた受圧部の受圧面積の方が大きくなる。   Naturally, the outer diameter of the base is larger than the inner diameter. Therefore, if the width dimension of the pressure receiving part along the opening radial direction of the base part is the same, the pressure receiving part provided in the outer peripheral part of the base part rather than the pressure receiving area of the pressure receiving part provided in the inner peripheral part of the base part The pressure receiving area is larger.

このため、本発明に係る流体貯蔵装置では、受圧部の単位受圧面積当たりに受ける圧力を小さくできる。これにより、口金部自体を大型化しなくても装置本体内の流体の圧力に基づいて係合部が受圧部を押圧する際の押圧力に十分に耐え得る強度を受圧部に付与できる。   For this reason, in the fluid storage device according to the present invention, the pressure received per unit pressure receiving area of the pressure receiving portion can be reduced. Thereby, the pressure receiving portion can be provided with a strength that can sufficiently withstand the pressing force when the engaging portion presses the pressure receiving portion based on the pressure of the fluid in the apparatus main body without increasing the size of the base portion itself.

したがって、本発明に係る流体貯蔵装置では、装置本体内に貯蔵する流体が高圧であっても、口金部に対する保持手段の相対的な変位や変形を防止又は効果的に抑制でき、ひいては、保持手段に保持される封止手段の口金部に対する変位や変形を防止又は効果的に抑制できる。   Therefore, in the fluid storage device according to the present invention, even when the fluid stored in the device main body is at a high pressure, the relative displacement and deformation of the holding means with respect to the base portion can be prevented or effectively suppressed, and thus the holding means. It is possible to prevent or effectively suppress displacement and deformation of the sealing means held by the base.

請求項２に記載の本発明に係る流体貯蔵装置は、請求項１に記載の本発明において、前記口金部の外周部に形成された雄ねじを前記受圧部とし、当該雄ねじに螺合可能に前記筒状部の内周部に形成された雌ねじを前記係合部とした、ことを特徴としている。   The fluid storage device according to a second aspect of the present invention is the fluid storage device according to the first aspect of the present invention, wherein the male screw formed on the outer peripheral portion of the base portion is the pressure receiving portion, and can be screwed into the male screw. The female screw formed in the inner peripheral part of the cylindrical part was made into the said engaging part, It is characterized by the above-mentioned.

請求項２に記載の本発明に係る流体貯蔵装置では、筒状部に形成された雌ねじを口金部の外周部に形成された雄ねじに螺合させることで筒状部、すなわち、保持手段が口金部に装着される。   In the fluid storage device according to the second aspect of the present invention, the cylindrical portion, that is, the holding means is connected to the base by screwing the female screw formed on the cylindrical portion with the male screw formed on the outer peripheral portion of the base portion. It is attached to the part.

嵌挿部が装置本体内の流体の圧力により口金部から押し出されそうになると、当接部が干渉部を押圧する。   When the fitting insertion part is about to be pushed out from the base part by the pressure of the fluid in the apparatus main body, the contact part presses the interference part.

しかしながら、干渉部が形成された筒状部の雌ねじが口金部の外周部に形成された雄ねじに干渉されることで筒状部の移動、ひいては干渉部の移動が規制され、その結果、口金部から抜け出ようとする封止手段の移動は干渉部により規制される。これにより、口金部に対する封止手段の装着状態が維持される。   However, the movement of the cylindrical part, and consequently the movement of the interference part is restricted by the interference of the female screw of the cylindrical part in which the interference part is formed with the male screw formed on the outer peripheral part of the base part. The movement of the sealing means that is about to escape is regulated by the interference portion. Thereby, the mounting state of the sealing means with respect to the base part is maintained.

請求項３に記載の本発明に係る流体貯蔵装置は、請求項１又は請求項２に記載の本発明において、前記口金部の開口方向を軸方向とする軸周り方向への前記口金部に対する前記封止手段の相対的な回動を規制する回動規制手段を備える、ことを特徴としている。   According to a third aspect of the present invention, in the fluid storage device according to the first or second aspect of the present invention, the fluid storage device according to the first aspect or the second aspect is configured so that the opening portion of the base portion is an axial direction and the base portion in the axial direction is the axial direction. A rotation restricting means for restricting relative rotation of the sealing means is provided.

請求項３に記載の本発明に係る流体貯蔵装置では、口金部の開口方向を軸方向とする軸周り方向に、封止手段が口金部に対して回動しようとすると、回動規制手段により封止手段の回動が規制される。このように、口金部に対する封止手段の回動が規制され、しかも、口金部の開口方向に沿った変位は保持手段の干渉部に規制されるため、基本的に口金部に対して封止手段が変位することがない。このため、封止手段による口金部の封止が良好に維持される。   In the fluid storage device according to the third aspect of the present invention, when the sealing means tries to rotate with respect to the base in the axial direction in which the opening direction of the base is the axial direction, the rotation restricting means The rotation of the sealing means is restricted. In this way, the rotation of the sealing means with respect to the base part is restricted, and the displacement along the opening direction of the base part is restricted by the interference part of the holding means. The means will not be displaced. For this reason, the sealing of the base portion by the sealing means is favorably maintained.

特に、請求項３に記載の本発明を請求項２に記載の本発明に従属させたならば、受圧部は雄ねじで、係合部が雌ねじであることから筒状部を口金部に装着するにあたり筒状部を回転させなくてはならない。このため、干渉部が当接部に当接した状態で、更に、筒状部を回転させると、干渉部と当接部との摩擦で当接部、ひいては封止手段が回転しようとする。しかしながら、本発明では、口金部に対して封止手段が回転することはいため、封止手段による口金部の封止が良好に維持される。   In particular, if the present invention described in claim 3 is made dependent on the present invention described in claim 2, since the pressure receiving portion is a male screw and the engaging portion is a female screw, the cylindrical portion is attached to the base portion. In this case, the cylindrical part must be rotated. For this reason, when the cylindrical portion is further rotated in a state where the interference portion is in contact with the contact portion, the contact portion, and thus the sealing means, tends to rotate due to friction between the interference portion and the contact portion. However, in the present invention, since the sealing means does not rotate with respect to the base portion, the sealing of the base portion by the sealing means is favorably maintained.

以上説明したように、本発明に係る流体貯蔵装置では、口金部を大型化することなく、装置本体内に貯蔵した流体の高い圧力によるインタンクバルブ等の封止手段の変位を確実に防止できる。   As described above, in the fluid storage device according to the present invention, the displacement of the sealing means such as the in-tank valve due to the high pressure of the fluid stored in the device main body can be reliably prevented without increasing the size of the base portion. .

＜第１の実施の形態の構成＞
図１には本発明の第１の実施の形態に係る流体貯蔵装置としてのタンク１０の要部の構造が分解斜視図によって示されており、図３には本タンク１０の要部の構造が断面図によって示されている。なお、以下、各図の上方（上側）を便宜上、各部位の上方（上側）とし、各図の下方（下側）を便宜上、各部位の下方（下側）として説明するが、これは実際にタンク１０を製造する際や使用する際の向きや方向とは何ら関係がなく、本発明を何ら限定するものではない。 <Configuration of First Embodiment>
FIG. 1 is an exploded perspective view showing the structure of the main part of the tank 10 as a fluid storage device according to the first embodiment of the present invention. FIG. 3 shows the structure of the main part of the tank 10. It is shown by a cross-sectional view. In the following description, the upper side (upper side) of each figure is described as an upper side (upper side) of each part, and the lower side (lower side) of each figure is described as a lower side (lower side) of each part for convenience. Further, there is no relation to the direction and direction when the tank 10 is manufactured or used, and the present invention is not limited in any way.

これらの図に示されるように、本タンク１０は装置本体としてのタンク本体１２を備えている。タンク本体１２は上下方向を軸方向とする円筒状の芯材の外周部に対して溶融状態の合成樹脂材を含浸させたガラス繊維を巻き付け、熱処理等によって溶融状態の合成樹脂材を硬化させることで形成された所謂「繊維強化プラスチック（ＦＲＰ）」により形成されている。   As shown in these drawings, the tank 10 includes a tank body 12 as an apparatus body. The tank body 12 is formed by winding a glass fiber impregnated with a molten synthetic resin material around an outer peripheral portion of a cylindrical core material whose vertical direction is an axial direction, and curing the molten synthetic resin material by heat treatment or the like. The so-called “fiber reinforced plastic (FRP)” is used.

なお、本実施の形態では、タンク本体１２を繊維強化プラスチックにより形成したが、例えば、鉄等、比較的機械的強度が高い金属によって形成してもよい。   In the present embodiment, the tank body 12 is formed of fiber reinforced plastic, but may be formed of a metal having a relatively high mechanical strength, such as iron.

また、タンク本体１２の上端側は縮径部１４とされている。縮径部１４は上方へ向けて絞られており、内径寸法が漸次縮小されている。縮径部１４の上端部からは連続して口金部１６が形成されている。   The upper end side of the tank body 12 is a reduced diameter portion 14. The reduced diameter portion 14 is narrowed upward, and the inner diameter dimension is gradually reduced. A base portion 16 is continuously formed from the upper end portion of the reduced diameter portion 14.

口金部１６は上下方向を軸方向とする円筒形状に形成されており、その下方の開口端は縮径部１４の上端にて開口している。また、口金部１６の上端も開口しており、口金部１６を介してタンク本体１２の内部空間は外部に連通している。   The base portion 16 is formed in a cylindrical shape having the vertical direction as an axial direction, and the lower opening end thereof is opened at the upper end of the reduced diameter portion 14. The upper end of the base part 16 is also open, and the internal space of the tank body 12 communicates with the outside through the base part 16.

また、口金部１６の上端面には環状溝１８が形成されている。環状溝１８は口金部１６の内周形状及び外周形状に対して略同軸の円形に形成されており、上方へ向けて開口している。この環状溝１８には、封止部材として後述する封止手段の一部を構成するＯリング（オーリング）２０が嵌挿されている。Ｏリング２０は、例えば、ゴム材程度の弾性を有する弾性材料によりリング状に形成されている。   An annular groove 18 is formed on the upper end surface of the base part 16. The annular groove 18 is formed in a circular shape that is substantially coaxial with the inner peripheral shape and the outer peripheral shape of the base portion 16, and opens upward. An O-ring (O-ring) 20 that constitutes a part of sealing means described later as a sealing member is fitted into the annular groove 18. For example, the O-ring 20 is formed in a ring shape from an elastic material having elasticity equivalent to that of a rubber material.

また、口金部１６には、上記のＯリング２０と共に封止手段を構成するインタンクバルブ２２が設けられる。インタンクバルブ２２はバルブ本体２４を備えている。バルブ本体２４は外径寸法が口金部１６の内径寸法よりも極僅かに小さな円柱形状に形成されており、口金部１６の内周部との間に基本的に隙間無く嵌挿可能とされている。   The base part 16 is provided with an in-tank valve 22 that constitutes a sealing means together with the O-ring 20. The in-tank valve 22 includes a valve body 24. The valve body 24 is formed in a cylindrical shape whose outer diameter is slightly smaller than the inner diameter of the base portion 16, and can basically be inserted between the inner peripheral portion of the base portion 16 without a gap. Yes.

バルブ本体２４の内側には図示しない弁機構が設けられており、弁機構を構成する弁体を開閉することで、インタンクバルブ２２の上側（すなわち、タンク本体１２の外部側）の開口端と、インタンクバルブ２２の下側（すなわち、タンク本体１２の内部側）の開口端との間を開放、遮断できる構造になっている。   A valve mechanism (not shown) is provided inside the valve body 24, and an opening end on the upper side of the in-tank valve 22 (that is, the outside of the tank body 12) is opened and closed by opening and closing the valve body constituting the valve mechanism. In this structure, the opening between the lower side of the in-tank valve 22 (that is, the inner side of the tank body 12) can be opened and closed.

さらに、バルブ本体２４の上端側の外周部には、当接部としてのフランジ部３０が形成されている。フランジ部３０は外径寸法が口金部１６の外径寸法に略等しい（又は小さな）略円板形状（又はリング状）に形成されており、バルブ本体２４の上端側の外周部からがバルブ本体２４の半径方向外方側へ延出されている。バルブ本体２４を口金部１６の内側に嵌挿した状態では、フランジ部３０は口金部１６の上端面に対向して当接する。   Further, a flange portion 30 as a contact portion is formed on the outer peripheral portion on the upper end side of the valve body 24. The flange portion 30 is formed in a substantially disk shape (or ring shape) whose outer diameter is substantially equal to (or smaller than) the outer diameter of the base portion 16, and from the outer peripheral portion on the upper end side of the valve body 24 to the valve body. 24 extends radially outward. In a state in which the valve body 24 is fitted inside the base part 16, the flange part 30 faces and abuts the upper end surface of the base part 16.

また、フランジ部３０が口金部１６の上端面に当接した状態では上記のＯリング２０が圧接されて弾性変形する。Ｏリング２０はフランジ部３０からの圧力で弾性変形することでフランジ部３０に密着すると共に環状溝１８の底部に密着し、口金部１６の上端部とフランジ部３０との間を封止する。   Further, when the flange portion 30 is in contact with the upper end surface of the base portion 16, the O-ring 20 is pressed and elastically deformed. The O-ring 20 is elastically deformed by the pressure from the flange portion 30 so as to be in close contact with the flange portion 30 and close to the bottom portion of the annular groove 18 to seal between the upper end portion of the base portion 16 and the flange portion 30.

さらに、口金部１６には保持手段としての袋ナット３２が装着される。袋ナット３２は筒状部３４を備えている。筒状部３４は外周形状が所定の正多角形（例えば、正六角形）で内周形状が円形の筒状に形成されている。   Further, a cap nut 32 as a holding means is attached to the base portion 16. The cap nut 32 includes a cylindrical portion 34. The cylindrical portion 34 is formed in a cylindrical shape whose outer peripheral shape is a predetermined regular polygon (for example, regular hexagon) and whose inner peripheral shape is circular.

筒状部３４の内周部には係合部としての雌ねじ３６が形成されている。この雌ねじ３６は、口金部１６の外周部に形成された受圧部としての雄ねじ３８に螺合可能に形成されており、雌ねじ３６を雄ねじ３８に螺合させることで筒状部３４が口金部１６の外側を略同軸的に被覆した状態で筒状部３４（すなわち、袋ナット３２）を口金部１６に装着できる構造になっている。   A female screw 36 as an engaging portion is formed on the inner peripheral portion of the cylindrical portion 34. The female screw 36 is formed so as to be able to be screwed to a male screw 38 as a pressure receiving portion formed on the outer peripheral portion of the base part 16, and the cylindrical part 34 is screwed to the male screw 38 by screwing the female screw 36 to the male screw 38. The cylindrical portion 34 (that is, the cap nut 32) can be attached to the base portion 16 in a state in which the outer side of the cylindrical portion is covered substantially coaxially.

また、筒状部３４の上端部又は上端側近傍には干渉部としてのフランジ部４０が設けられている。フランジ部４０は筒状部３４の上端部又は上端部近傍における内周部から、筒状部３４の内周部の半径方向内方側へ向けて延出されている。上記のように筒状部３４の雌ねじ３６を口金部１６の雄ねじ３８に螺合させて口金部１６に筒状部３４を装着すると、フランジ部４０は上下方向に沿ってフランジ部３０に対向する。   Further, a flange portion 40 as an interference portion is provided in the upper end portion of the cylindrical portion 34 or in the vicinity of the upper end side. The flange portion 40 extends from the inner peripheral portion in the vicinity of the upper end portion or the upper end portion of the cylindrical portion 34 toward the radially inner side of the inner peripheral portion of the cylindrical portion 34. As described above, when the female screw 36 of the cylindrical part 34 is screwed into the male screw 38 of the base part 16 and the cylindrical part 34 is attached to the base part 16, the flange part 40 faces the flange part 30 along the vertical direction. .

さらに、フランジ部４０には筒状部３４に対して同軸の円孔４２が形成されている。円孔４２によって筒状部３４の内側とフランジ部４０を介して筒状部３４とは反対側とが連通しており、タンク本体１２内に貯蔵したガスが送給される機器とインタンクバルブ２２とを直接又は間接的に接続するパイプやチューブ等の接続部材や他のバルブ等は円孔４２を貫通する如くインタンクバルブ２２に装着される。   Further, a circular hole 42 coaxial with the cylindrical portion 34 is formed in the flange portion 40. The inner side of the cylindrical part 34 is communicated with the opposite side of the cylindrical part 34 via the flange part 40 through the circular hole 42, and a device for supplying the gas stored in the tank body 12 and the in-tank valve A connecting member such as a pipe or a tube that directly or indirectly connects to 22 or another valve or the like is attached to the in-tank valve 22 so as to penetrate the circular hole 42.

＜第１の実施の形態の作用、効果＞
次に、本実施の形態の作用並びに効果について説明する。 <Operation and Effect of First Embodiment>
Next, the operation and effect of the present embodiment will be described.

本タンク１０は、例えば、タンク本体１２内にガスが貯蔵されていない空の状態でインタンクバルブ２２のバルブ本体２４が口金部１６の内側に嵌挿される。このように、口金部１６にバルブ本体２４が嵌挿されることで、インタンクバルブ２２のフランジ部３０が口金部１６の上端部に当接する。   In the tank 10, for example, the valve body 24 of the in-tank valve 22 is fitted inside the base portion 16 in an empty state where no gas is stored in the tank body 12. Thus, the flange main body 30 of the in-tank valve 22 is brought into contact with the upper end of the base part 16 by fitting the valve body 24 into the base part 16.

次いで、口金部１６の雄ねじ３８に袋ナット３２の雌ねじ３６が螺合させられ、口金部１６の開口方向を軸方向とする軸周り方向一方に袋ナット３２が口金部１６に対して相対的に回転させられる。これにより、口金部１６に対して袋ナット３２が下降し、フランジ部３０に対向する袋ナット３２のフランジ部４０が接近する。   Next, the female screw 36 of the cap nut 32 is screwed into the male screw 38 of the cap portion 16, and the cap nut 32 is relatively relative to the cap portion 16 in one axial direction with the opening direction of the cap portion 16 being the axial direction. Rotated. Thereby, the cap nut 32 descends with respect to the cap portion 16, and the flange portion 40 of the cap nut 32 facing the flange portion 30 approaches.

袋ナット３２が所定量回転しつつ下降するとフランジ部４０がフランジ部３０に圧接して、フランジ部３０を下方へ押圧する。フランジ部４０からの押圧力を受けたフランジ部３０は口金部１６の上端部に圧接し、Ｏリング２０を弾性変形させる。これにより、図２及び図３に示されるように、Ｏリング２０がフランジ部３０及び環状溝１８の底部に密着し、口金部１６の上端部とフランジ部３０との間が封止される。   When the cap nut 32 is lowered while rotating a predetermined amount, the flange portion 40 comes into pressure contact with the flange portion 30 and presses the flange portion 30 downward. The flange portion 30 that has received the pressing force from the flange portion 40 comes into pressure contact with the upper end portion of the base portion 16 and elastically deforms the O-ring 20. As a result, as shown in FIGS. 2 and 3, the O-ring 20 is in close contact with the flange portion 30 and the bottom of the annular groove 18, and the upper end portion of the base portion 16 and the flange portion 30 are sealed.

このような状態のタンク本体１２の内部にインタンクバルブ２２を介してガス等の流体が大気圧よりも十分に高圧の状態になるまで供給され、タンク本体１２の内部に貯蔵される。   A fluid such as gas is supplied into the tank body 12 in such a state through the in-tank valve 22 until the pressure is sufficiently higher than the atmospheric pressure, and is stored in the tank body 12.

この状態では、タンク本体１２の内部に貯蔵された流体の圧力がインタンクバルブ２２のバルブ本体２４を押圧し、口金部１６から押し出そうとする。このように流体の圧力を受けたバルブ本体２４はフランジ部３０によって袋ナット３２のフランジ部４０を押圧する。   In this state, the pressure of the fluid stored in the tank body 12 presses the valve body 24 of the in-tank valve 22 and tries to push it out from the base part 16. The valve body 24 receiving the fluid pressure in this way presses the flange portion 40 of the cap nut 32 by the flange portion 30.

フランジ部３０からの押圧力を受けて袋ナット３２が上昇しようとすると、口金部１６の外周部に形成された雄ねじ３８の下側斜面が筒状部３４の内周部に形成されや雌ねじ３６の上側斜面に干渉する。このような雄ねじ３８からの干渉を雌ねじ３６が受けることで筒状部３４、すなわち、袋ナット３２の口金部１６に対する上昇が規制される。   When the cap nut 32 is lifted by receiving the pressing force from the flange portion 30, the lower slope of the male screw 38 formed on the outer peripheral portion of the base portion 16 is formed on the inner peripheral portion of the cylindrical portion 34 and the female screw 36. Interfering with the upper slope of the. When the female screw 36 receives such interference from the male screw 38, the cylindrical portion 34, that is, the rise of the cap nut 32 with respect to the cap portion 16 is restricted.

さらに、袋ナット３２の上昇が規制されることで、流体の圧力によって口金部１６から抜け出ようとするインタンクバルブ２２は、フランジ部３０がフランジ部４０に干渉される。このため、口金部１６から抜け出ようとする方向へのインタンクバルブ２２の移動がフランジ部４０（すなわち、袋ナット３２）により規制され、インタンクバルブ２２が袋ナット３２に保持される。これにより、口金部１６の上端部及びＯリング２０に対するフランジ部３０の圧接状態が維持され、口金部１６の上端部とフランジ部３０との間が封止される。   Further, the rise of the cap nut 32 is restricted, and the flange portion 30 of the in-tank valve 22 that is about to come out of the base portion 16 due to the fluid pressure is interfered with the flange portion 40. For this reason, the movement of the in-tank valve 22 in the direction of coming out of the base portion 16 is regulated by the flange portion 40 (that is, the cap nut 32), and the in-tank valve 22 is held by the cap nut 32. Thereby, the pressure contact state of the flange part 30 with respect to the upper end part of the base part 16 and the O-ring 20 is maintained, and the gap between the upper end part of the base part 16 and the flange part 30 is sealed.

ここで、雄ねじ３８は口金部１６の外周部に形成されているため、雄ねじ３８の歯元円の直径寸法は口金部１６の外周部の外径寸法に等しく、当然のことながら雄ねじ３８の歯先円の直径寸法は口金部１６の外径寸法よりも十分に大きい。   Here, since the male screw 38 is formed on the outer peripheral portion of the base portion 16, the diameter dimension of the root circle of the male screw 38 is equal to the outer diameter size of the outer peripheral portion of the base portion 16. The diameter of the tip circle is sufficiently larger than the outer diameter of the base part 16.

これに対して、仮に、口金部１６の内周部に雌ねじを形成した場合には、この雌ねじの歯元円の直径寸法は口金部１６の内径寸法に等しく、当然のことながら雌ねじの歯先円の直径寸法は口金部１６の内径寸法よりも十分に小さい。   On the other hand, if a female screw is formed on the inner peripheral portion of the base portion 16, the diameter dimension of the root circle of this female screw is equal to the inner diameter size of the base portion 16, and naturally the tooth tip of the female screw. The diameter of the circle is sufficiently smaller than the inner diameter of the base part 16.

また、当然ではあるが口金部１６の外径寸法は内径寸法よりも十分に大きい。   Of course, the outer diameter of the cap portion 16 is sufficiently larger than the inner diameter.

以上のことから、仮に、歯元から歯先までの寸法が等しければ、ねじの斜面部の総面積は口金部１６の内周部に雌ねじを形成した場合に比べて外周部に形成した雄ねじ３８を方が遥かに広い。   From the above, if the dimensions from the tooth base to the tooth tip are equal, the total area of the inclined surface portion of the screw is a male screw 38 formed on the outer peripheral portion as compared with the case where a female screw is formed on the inner peripheral portion of the base portion 16. Is much wider.

上記のように、雄ねじ３８の斜面が筒状部３４の雌ねじ３６からタンク本体１２内のガスの圧力に基づく押圧力を受けるため、ねじの斜面部の総面積は広い方が単位面積当たりにかかる圧力が小さくなる。このように、本実施の形態に係るタンク１０では、口金部１６の外周部に形成した雄ねじ３８によってタンク本体１２内のガスの圧力に基づく押圧力を受ける構造にしたため、口金部１６の形状を大きくすることなく、上記の押圧力の受圧面積の増加を図ることができる。   As described above, the inclined surface of the male screw 38 receives a pressing force based on the pressure of the gas in the tank body 12 from the female screw 36 of the cylindrical portion 34, so that the larger the total area of the inclined surface portion of the screw, the more per unit area it takes. Pressure is reduced. As described above, in the tank 10 according to the present embodiment, the male screw 38 formed on the outer peripheral portion of the base portion 16 is configured to receive a pressing force based on the pressure of the gas in the tank main body 12. An increase in the pressure receiving area of the pressing force can be achieved without increasing the pressure.

受圧面積の増加が可能になることで、タンク本体１２内の流体の圧力に基づく力により、口金部１６に対して袋ナット３２が変位したり変形することを防止又は効果的に抑制できる。このように、袋ナット３２の変位や変形を防止又は効果的に抑制できることで、袋ナット３２のフランジ部４０は、確実にフランジ部３０を押さえ付け、これにより、タンク本体１２内の流体の圧力でインタンクバルブ２２が変位したり変形することを防止できる。   Since the pressure receiving area can be increased, it is possible to prevent or effectively suppress the cap nut 32 from being displaced or deformed with respect to the cap portion 16 due to the force based on the pressure of the fluid in the tank body 12. In this way, the displacement and deformation of the cap nut 32 can be prevented or effectively suppressed, so that the flange portion 40 of the cap nut 32 reliably presses the flange portion 30, and thereby the pressure of the fluid in the tank body 12. Thus, the in-tank valve 22 can be prevented from being displaced or deformed.

また、タンク本体１２内に貯蔵した流体の圧力が高圧であると、その圧力が縮径部１４を内側から押圧すると縮径部１４の上端側、ひいては口金部１６を押し開こうとする。ここで、口金部１６の内周部に雌ねじを形成して、バルブ本体２４の外周部に形成した雄ねじを螺合させてインタンクバルブ２２を装着した構成では、流体の圧力により口金部１６が押し開かれることで、口金部１６の内周部に形成された雌ねじがバルブ本体２４の外周部に形成された雄ねじから離間する。このため、口金部１６の内周部とバルブ本体２４の外周部との間に隙間が形成され、流体が漏れやすくなる。   Further, if the pressure of the fluid stored in the tank body 12 is high, when the pressure presses the reduced diameter portion 14 from the inside, the upper end side of the reduced diameter portion 14 and thus the base portion 16 tries to be opened. Here, in a configuration in which a female screw is formed on the inner peripheral portion of the base portion 16 and a male screw formed on the outer peripheral portion of the valve body 24 is screwed to mount the in-tank valve 22, the base portion 16 is moved by the pressure of the fluid. By being pushed open, the female screw formed on the inner peripheral part of the base part 16 is separated from the male screw formed on the outer peripheral part of the valve body 24. For this reason, a gap is formed between the inner peripheral portion of the base portion 16 and the outer peripheral portion of the valve main body 24, and the fluid easily leaks.

これに対して、本実施の形態では、筒状部３４（袋ナット３２）の内周部に形成された雌ねじ３６が口金部１６の外周部に形成された雄ねじ３８に螺合する構成である。このため、仮に、流体の圧力により口金部１６が押し開かれそうになっても、本実施の形態では口金部１６の外周部が筒状部３４の内周部に接近するだけのことであり、口金部１６の拡径は筒状部３４の内周部によって規制される。これにより、流体の圧力に起因してバルブ本体２４の外周部と口金部１６の内周部との間に隙間が形成されたり、隙間が拡大されることを効果的に防止でき、極めて高いシール性（封止性能）を確保、維持できる。   On the other hand, in the present embodiment, the female screw 36 formed on the inner peripheral portion of the cylindrical portion 34 (cap nut 32) is screwed into the male screw 38 formed on the outer peripheral portion of the base portion 16. . For this reason, even if the base part 16 is likely to be pushed open by the pressure of the fluid, in this embodiment, the outer peripheral part of the base part 16 only approaches the inner peripheral part of the cylindrical part 34. The diameter of the base part 16 is restricted by the inner peripheral part of the cylindrical part 34. As a result, it is possible to effectively prevent a gap from being formed between the outer peripheral portion of the valve body 24 and the inner peripheral portion of the base portion 16 due to the pressure of the fluid or to enlarge the gap, and an extremely high seal (Sealing performance) can be secured and maintained.

なお、本実施の形態では、封止手段をインタンクバルブ２２としたが、このインタンクバルブ２２の具体的な内部構造に関しては何ら限定されるものではない。したがって、インタンクバルブ２２は、手動のバルブであってもよいし、減圧弁や電磁弁であってもよい。また、封止手段はインタンクバルブ２２のような弁機構を備えた構造でなくてもよく、単純な栓であってもよい。   In this embodiment, the sealing means is the in-tank valve 22, but the specific internal structure of the in-tank valve 22 is not limited at all. Therefore, the in-tank valve 22 may be a manual valve, a pressure reducing valve, or an electromagnetic valve. Further, the sealing means may not be a structure having a valve mechanism such as the in-tank valve 22, and may be a simple stopper.

＜第２の実施の形態の構成＞
次に、本発明の第２の実施の形態について説明する。なお、本実施の形態を説明するにあたり、前記第１の実施の形態と基本的に同一の部位に関しては、同一の符号を付与してその説明を省略する。 <Configuration of Second Embodiment>
Next, a second embodiment of the present invention will be described. In the description of the present embodiment, the same reference numerals are assigned to the same parts as those in the first embodiment, and the description thereof is omitted.

図４には本発明の第２の実施の形態に係る流体貯蔵装置としてのタンク６０の要部の構造が断面図によって示されている。   FIG. 4 is a cross-sectional view showing the structure of the main part of a tank 60 as a fluid storage device according to the second embodiment of the present invention.

この図に示されるように、本タンク６０のタンク本体１２には口金部１６に代わり口金部６２が形成されている。口金部６２は基本的に口金部１６と同じ構造であるが、上端部に孔部６４が形成されている点で口金部１６とは構成が異なる。   As shown in this figure, a base 62 is formed in the tank body 12 of the main tank 60 instead of the base 16. The base part 62 basically has the same structure as the base part 16, but differs in configuration from the base part 16 in that a hole 64 is formed in the upper end part.

一方、本タンク６０のインタンクバルブ２２には、フランジ部３０に代わり当接部としてのフランジ部６６が形成されている。フランジ部６６は基本的にフランジ部３０と同じ構造であるが、バルブ本体２４を口金部６２に嵌挿した状態で口金部６２の上端部と対向するフランジ部６６の端面に孔部６８が形成されている点でフランジ部６６はフランジ部４０と構成が異なる。孔部６８は、フランジ部６６の中心までの距離は、孔部６４から口金部６２の中心までの距離に概ね等しく、バルブ本体２４を口金部６２に嵌挿した状態で孔部６８を孔部６４に対向させることができるようになっている。   On the other hand, the in-tank valve 22 of the tank 60 is formed with a flange portion 66 as a contact portion instead of the flange portion 30. The flange portion 66 has basically the same structure as the flange portion 30, but a hole portion 68 is formed on the end surface of the flange portion 66 facing the upper end portion of the base portion 62 in a state where the valve body 24 is fitted into the base portion 62. The flange portion 66 is different from the flange portion 40 in configuration. The distance between the hole portion 68 and the center of the flange portion 66 is substantially equal to the distance from the hole portion 64 to the center of the base portion 62, and the hole portion 68 is inserted into the hole portion 62 in a state where the valve body 24 is fitted into the base portion 62. 64 can be made to face each other.

また、孔部６４の内側には回動規制手段としてのピン７０が配置されている。ピン７０は全体的に柱状（円柱形状）に形成されている。ピン７０の外周形状は孔部６４及び孔部６８の開口形状に対応しており、孔部６４及び孔部６８に対してピン７０を嵌挿できる構造となっている。   In addition, a pin 70 as a rotation restricting means is disposed inside the hole 64. The pin 70 is formed in a columnar shape (cylindrical shape) as a whole. The outer peripheral shape of the pin 70 corresponds to the opening shape of the hole 64 and the hole 68, and the pin 70 can be inserted into the hole 64 and the hole 68.

また、ピン７０の全高寸法（ピン７０が円柱形状であるならば軸方向に沿った全長）は、孔部６４の深さよりも大きく、孔部６４の深さと孔部６８の深さの和よりも小さい。したがって、孔部６４にピン７０を嵌挿した状態では、ピン７０はその一部が孔部６４から突出する。   The total height of the pin 70 (the total length along the axial direction if the pin 70 is cylindrical) is larger than the depth of the hole 64, and is the sum of the depth of the hole 64 and the depth of the hole 68. Is also small. Therefore, in a state where the pin 70 is inserted into the hole 64, a part of the pin 70 protrudes from the hole 64.

孔部６４から突出したピン７０の先端側を孔部６８に嵌挿した状態では、孔部６８の内底部がピン７０の先端に干渉することがなく、この状態で口金部６２の上端面とフランジ部６６の下端面（口金部６２と対向する側の端面）とを互いに付き合わせる（当接させる）ことができる。   In a state where the tip side of the pin 70 protruding from the hole 64 is fitted into the hole 68, the inner bottom portion of the hole 68 does not interfere with the tip of the pin 70, and in this state, the upper end surface of the base portion 62 The lower end surface of the flange portion 66 (the end surface on the side facing the base portion 62) can be brought into contact (contacted).

＜第２の実施の形態の作用、効果＞
前記第１の実施の形態でも説明したように、口金部６２の外周部に形成された雄ねじ３８に袋ナット３２を構成する筒状部３４の内周部に形成された雌ねじ３６を螺合させた状態で、袋ナット３２をその軸周り一方に回転させつつ袋ナット３２を下降させることで袋ナット３２が口金部６２に装着される。 <Operation and Effect of Second Embodiment>
As described in the first embodiment, the female screw 36 formed on the inner peripheral portion of the cylindrical portion 34 constituting the cap nut 32 is screwed onto the male screw 38 formed on the outer peripheral portion of the base portion 62. In this state, the cap nut 32 is mounted on the base 62 by lowering the cap nut 32 while rotating the cap nut 32 around one of its axes.

このように袋ナット３２を口金部６２に装着するに際して、袋ナット３２が下降すると袋ナット３２のフランジ部４０がインタンクバルブ２２のフランジ部６６に当接する。フランジ部６６を口金部６２の上端部に圧接させてＯリング２０を弾性変形させるためには、通常、単純にフランジ部６６にフランジ部４０が当接した状態から更に袋ナット３２を回転させて締め込まなくてはならない。   In this way, when the cap nut 32 is attached to the cap portion 62, when the cap nut 32 is lowered, the flange portion 40 of the cap nut 32 comes into contact with the flange portion 66 of the in-tank valve 22. In order to press the flange portion 66 against the upper end portion of the base portion 62 and elastically deform the O-ring 20, normally, the cap nut 32 is further rotated from the state in which the flange portion 40 is in contact with the flange portion 66. It must be tightened.

このように、フランジ部６６にフランジ部４０が当接した状態で袋ナット３２を回転させると、フランジ部４０、６６間で生じた摩擦により、フランジ部４０がフランジ部６６を回転させようとする。フランジ部６６が回転しようとすると、フランジ部６６の孔部６８の内周部がピン７０をその回転方向に押圧する。   As described above, when the cap nut 32 is rotated while the flange portion 40 is in contact with the flange portion 66, the flange portion 40 tries to rotate the flange portion 66 due to the friction generated between the flange portions 40, 66. . When the flange portion 66 tries to rotate, the inner peripheral portion of the hole portion 68 of the flange portion 66 presses the pin 70 in the rotation direction.

ピン７０は孔部６８の内周部からの押圧力を受けることで、フランジ部４０と共に回転しようとするが、ピン７０は口金部６２の孔部６４内にも嵌挿されているため、ピン７０が口金部６２の軸心周りに回転しようとすると、孔部６４の内周部がピン７０に干渉して、ピン７０の回転を規制する。このようにピン７０は口金部６２の軸心周りの回転が規制されることで、孔部６８の内周部の回転、すなわち、フランジ部６６の回転を規制する。   The pin 70 receives a pressing force from the inner peripheral portion of the hole portion 68 and tries to rotate together with the flange portion 40, but the pin 70 is also inserted into the hole portion 64 of the base portion 62. When 70 tries to rotate around the axis of the base 62, the inner peripheral portion of the hole 64 interferes with the pin 70 and restricts the rotation of the pin 70. Thus, the pin 70 restricts the rotation of the inner periphery of the hole 68, that is, the rotation of the flange 66, by restricting the rotation of the base 62 around the axis.

したがって、本実施の形態では、袋ナット３２を口金部６２に装着するにあたり、フランジ部４０が摩擦でフランジ部４０を回転させようとしてもフランジ部４０が回転することはない。これにより、フランジ部４０が回転することでＯリング２０が引きずられて回転することもなく、袋ナット３２を装着する際のＯリング２０の磨耗や損傷を効果的に防止でき、これにより、フランジ部６６と口金部６２との間の高いシール性（封止性能）を確保できる。   Therefore, in the present embodiment, when the cap nut 32 is attached to the base portion 62, the flange portion 40 does not rotate even if the flange portion 40 tries to rotate the flange portion 40 by friction. This prevents the O-ring 20 from being dragged and rotated by the rotation of the flange portion 40, and can effectively prevent the O-ring 20 from being worn or damaged when the cap nut 32 is mounted. A high sealing property (sealing performance) between the portion 66 and the base portion 62 can be ensured.

なお、本実施の形態では、上記のようにインタンクバルブ２２や口金部６２とは別にピン７０を設け、このピン７０を回転規制手段とした。しかしながら、回転規制手段は結果的に口金部６２に対するフランジ部６６の回転を規制できる構造であればよく、その具体的な構造に何ら限定されるものではない。   In the present embodiment, the pin 70 is provided separately from the in-tank valve 22 and the base part 62 as described above, and this pin 70 is used as the rotation restricting means. However, the rotation restricting means may be any structure that can restrict the rotation of the flange portion 66 relative to the base portion 62 as a result, and is not limited to the specific structure.

本発明の第１の実施の形態に係る流体貯蔵装置の要部の構成を示す分解斜視図である。It is a disassembled perspective view which shows the structure of the principal part of the fluid storage apparatus which concerns on the 1st Embodiment of this invention. 封止手段及び保持手段を装着した状態を示す斜視図である。It is a perspective view which shows the state which mounted | wore the sealing means and the holding means. 本発明の第１の実施の形態に係る流体貯蔵装置の要部の構成を示す断面図である。It is sectional drawing which shows the structure of the principal part of the fluid storage apparatus which concerns on the 1st Embodiment of this invention. 本発明の第２の実施の形態に係る流体貯蔵装置の要部の構成を示す図３に対応した断面図である。It is sectional drawing corresponding to FIG. 3 which shows the structure of the principal part of the fluid storage apparatus which concerns on the 2nd Embodiment of this invention.

符号の説明Explanation of symbols

１０ タンク
１２ タンク本体（装置本体）
１６ 口金部
２０ Ｏリング（封止手段）
２２ インタンクバルブ（封止手段）
２４ バルブ本体（嵌挿部）
３０ フランジ部（当接部）
３２ 袋ナット（保持手段）
３６ 雌ねじ（係合部）
３８ 雄ねじ（受圧部）
４０ フランジ部（干渉部）
６０ タンク
６２ 口金部
６６ フランジ部（当接部）
７０ ピン（回転規制手段） 10 Tank 12 Tank body (Device body)
16 Base 20 O-ring (sealing means)
22 In-tank valve (sealing means)
24 Valve body (insertion part)
30 Flange part (contact part)
32 Cap nut (holding means)
36 Female thread (engagement part)
38 Male thread (pressure receiving part)
40 Flange (interference part)
60 Tank 62 Base part 66 Flange part (contact part)
70 pins (rotation restricting means)

Claims (3)

内部に大気圧よりも高圧の流体を貯蔵する装置本体と、
外周形状が円形で両端が開口した筒状に形成されると共に、貫通方向一方の端部の側から他方の端部の側へ向いた圧力を受けることが可能な受圧部が外周部に設けられ、前記貫通方向一方の開口端側で前記装置本体に一体的に結合されて内部が前記装置本体の内部に連通した口金部と、
前記口金部の開口端から前記口金部の内側に嵌挿される嵌挿部を有すると共に、前記口金部に対する前記嵌挿部の嵌挿状態で前記口金部の開口方向に沿って前記口金部の前記装置本体とは反対側の開口端に当接して前記口金部の開口端との間を封止する当接部が前記嵌挿部に一体形成された封止手段と、
前記口金部を外側から被覆可能な筒状に形成されると共に、前記圧力の向きとは反対側から前記受圧部に係合する係合部を有し、前記係合部が前記受圧部に係合した状態では前記圧力の向きと同方向への変位が規制される筒状部を有すると共に、前記筒状部を前記口金部の外周部を被覆した状態で前記当接部を介して前記口金部とは反対側から前記当接部に干渉して、前記口金部の開口端から離間する方向への前記当接部の変位を規制する干渉部が前記筒状部の内周部から延設された保持手段と、
を備える流体貯蔵装置。 An apparatus body for storing a fluid having a pressure higher than atmospheric pressure inside;
The outer peripheral portion is formed in a cylindrical shape having a circular outer shape and both ends open, and a pressure receiving portion capable of receiving pressure from one end side to the other end side in the penetrating direction is provided on the outer peripheral portion. A base part integrally connected to the apparatus main body at one opening end side in the penetrating direction, and the inside communicated with the inside of the apparatus main body,
While having an insertion part inserted into the inside of the base part from the opening end of the base part, in the insertion state of the insertion part with respect to the base part, the opening of the base part along the opening direction of the base part A sealing means in which a contact portion that contacts the opening end opposite to the apparatus main body and seals between the opening end of the base portion is formed integrally with the fitting insertion portion;
The cap portion is formed in a cylindrical shape that can be covered from the outside, and has an engaging portion that engages with the pressure receiving portion from a side opposite to the direction of the pressure, and the engaging portion is engaged with the pressure receiving portion. In the combined state, it has a cylindrical part whose displacement in the same direction as the direction of the pressure is restricted, and the base part is covered with the outer periphery of the base part through the contact part. An interference portion that interferes with the contact portion from the side opposite to the portion and regulates displacement of the contact portion in a direction away from the opening end of the base portion extends from the inner peripheral portion of the cylindrical portion Holding means,
A fluid storage device comprising: 前記口金部の外周部に形成された雄ねじを前記受圧部とし、当該雄ねじに螺合可能に前記筒状部の内周部に形成された雌ねじを前記係合部とした、
ことを特徴とする請求項１に記載の流体貯蔵装置。 The male screw formed on the outer peripheral part of the base part is used as the pressure receiving part, and the female screw formed on the inner peripheral part of the cylindrical part so as to be screwable with the male screw is used as the engaging part.
The fluid storage device according to claim 1. 前記口金部の開口方向を軸方向とする軸周り方向への前記口金部に対する前記封止手段の相対的な回動を規制する回動規制手段を備える、
請求項１又は請求項２に記載の流体貯蔵装置。 A rotation restricting means for restricting the relative rotation of the sealing means with respect to the base portion in the direction around the axis with the opening direction of the base portion as an axial direction;
The fluid storage device according to claim 1 or 2.
JP2004125502A 2004-04-21 2004-04-21 Fluid storing device Pending JP2005308087A (en)

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JP2016223494A (en) * 2015-05-28 2016-12-28 シャインスターホールディング株式会社 Mouthpiece structure of composite container and composite container
KR20180020937A (en) * 2016-08-19 2018-02-28 엘앤에프 주식회사 Pressure Vessel for safety Lock
KR20180020936A (en) * 2016-08-19 2018-02-28 엘앤에프 주식회사 Pressure Vessel for safety Lock
CN114941797A (en) * 2021-02-15 2022-08-26 丰田自动车株式会社 High-pressure tank
JP7433589B2 (en) 2019-11-05 2024-02-20 サムテック株式会社 Tank gathering device

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JPS6465400A (en) * 1987-08-17 1989-03-10 Messer Griesheim Gmbh Valve sleeve for receiving gas bomb valve for compressed gas vessel
JPH022591U (en) * 1988-06-16 1990-01-09
JPH02217697A (en) * 1988-11-24 1990-08-30 Sandvik Ab Gas container and its manufacturing method and coupling
JP2002349796A (en) * 2001-05-29 2002-12-04 Asahi Seisakusho Co Ltd Valve installation structure for mouthpiece of pressure vessel

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Publication number Priority date Publication date Assignee Title
JPS6465400A (en) * 1987-08-17 1989-03-10 Messer Griesheim Gmbh Valve sleeve for receiving gas bomb valve for compressed gas vessel
JPH022591U (en) * 1988-06-16 1990-01-09
JPH02217697A (en) * 1988-11-24 1990-08-30 Sandvik Ab Gas container and its manufacturing method and coupling
JP2002349796A (en) * 2001-05-29 2002-12-04 Asahi Seisakusho Co Ltd Valve installation structure for mouthpiece of pressure vessel

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101438821B1 (en) 2008-04-22 2014-09-05 현대자동차주식회사 Method for controlling thrust force of automatic transmission
KR101433245B1 (en) 2012-10-16 2014-08-25 가스탱크코리아 (주) Valve unit for gas tank and gas tank including the same
JP2016223494A (en) * 2015-05-28 2016-12-28 シャインスターホールディング株式会社 Mouthpiece structure of composite container and composite container
KR20180020937A (en) * 2016-08-19 2018-02-28 엘앤에프 주식회사 Pressure Vessel for safety Lock
KR20180020936A (en) * 2016-08-19 2018-02-28 엘앤에프 주식회사 Pressure Vessel for safety Lock
KR101842442B1 (en) * 2016-08-19 2018-03-28 엘앤에프 주식회사 Pressure Vessel for safety Lock
KR101842444B1 (en) * 2016-08-19 2018-03-28 엘앤에프 주식회사 Pressure Vessel for safety Lock
KR101894797B1 (en) * 2016-08-19 2018-09-04 엘앤에프 주식회사 Pressure Vessel for safety Lock
KR101894795B1 (en) * 2016-08-19 2018-09-04 엘앤에프 주식회사 Pressure Vessel for safety Lock
JP7433589B2 (en) 2019-11-05 2024-02-20 サムテック株式会社 Tank gathering device
CN114941797A (en) * 2021-02-15 2022-08-26 丰田自动车株式会社 High-pressure tank

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