JP2015170471A - Gas transmission member and breathable container - Google Patents

Gas transmission member and breathable container Download PDF

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JP2015170471A
JP2015170471A JP2014044305A JP2014044305A JP2015170471A JP 2015170471 A JP2015170471 A JP 2015170471A JP 2014044305 A JP2014044305 A JP 2014044305A JP 2014044305 A JP2014044305 A JP 2014044305A JP 2015170471 A JP2015170471 A JP 2015170471A
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gas
container
hole
sheet
gas permeable
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恭子 石井
Kyoko Ishii
恭子 石井
陽三 矢野
Yozo Yano
陽三 矢野
古内　浩二
Koji Kouchi
浩二 古内
福岡　孝博
Takahiro Fukuoka
孝博 福岡
佳子 吉良
Yoshiko Kira
佳子 吉良
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Nitto Denko Corp
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Nitto Denko Corp
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Priority to JP2014044305A priority Critical patent/JP2015170471A/en
Priority to TW104107259A priority patent/TW201544741A/en
Priority to PCT/JP2015/056700 priority patent/WO2015133618A1/en
Publication of JP2015170471A publication Critical patent/JP2015170471A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/14—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors
    • H01G11/20—Reformation or processes for removal of impurities, e.g. scavenging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • H01G11/80—Gaskets; Sealings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/08—Housing; Encapsulation
    • H01G9/12—Vents or other means allowing expansion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/394—Gas-pervious parts or elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/14—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • 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
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Packages (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a gas transmission member capable of suppressing contamination of a foreign substance into the internal space of a container body, while enhancing the strength and design of the container body, and capable of downsizing the container body, and to provide a breathable container.SOLUTION: A gas transmission member 1 is formed in a container body A having an internal space S, so that it can be attached to a through hole C1 interconnecting the space on the outside of the body A and the internal space S. The gas transmission member 1 includes a gas transmission sheet 2 capable of transmitting the gas in the internal space S to the space on the outside of the container body A, and a holder 4 having a gas flow hole 4a for circulating gas, and holding the gas transmission sheet 2 in the gas flow hole 4a. The holder 4 has a pressure valve 3 which can discharge the gas in the internal space S to the space on the outside of the container body A, when the pressure in the internal space S exceeds a predetermined pressure.

Description

本発明は、気体を透過させる気体透過部材と、該気体透過部材を備える通気性容器とに関する。   The present invention relates to a gas permeable member that allows gas to permeate, and a breathable container including the gas permeable member.

密封された容器内で気体が発生すると、容器の内圧が上昇して容器が破損したり爆発したりする虞がある。例えば、二次電池、電解コンデンサ、電気二重層キャパシタなどのような蓄電素子においては、使用時に、電極が収容された容器内において特定のガスが発生するため、斯かるガスが容器外へ排出されないと、内圧の上昇によって容器の破損や爆発を生じる虞がある。このため、容器内の気体を容器の外側へ排出する構造が種々提案されている。   If gas is generated in the sealed container, the internal pressure of the container rises and the container may be damaged or explode. For example, in a storage element such as a secondary battery, an electrolytic capacitor, an electric double layer capacitor, etc., a specific gas is generated in a container in which an electrode is accommodated, and thus such gas is not discharged outside the container. If the internal pressure increases, the container may be damaged or explode. For this reason, various structures for discharging the gas in the container to the outside of the container have been proposed.

例えば、電解コンデンサの通気性容器としては、電極や電解液を収容する内部空間を有して上面開口する外装ケースおよび前記上面開口を閉塞する封口板を有する容器本体と、気体を透過させる透過性ゴムからなるガス抜き弁（気体透過部材）と、容器本体内の圧力が所定圧を上回った際に内部空間の気体を容器本体の外側の空間に放出可能な圧力弁とを備えるものが知られている（特許文献１参照）。斯かる通気性容器では、容器本体の封口板に複数の貫通孔が設けられ、複数の貫通孔のうち異なる貫通孔に対してガス抜き弁と圧力弁とが各々設けられている。   For example, as an air-permeable container for an electrolytic capacitor, a container main body having an outer case having an internal space for accommodating an electrode and an electrolytic solution and having an upper surface opened, and a sealing plate for closing the upper surface opening, and a gas-permeable permeability A gas venting valve (gas permeable member) made of rubber and a pressure valve capable of releasing the gas in the internal space to the space outside the container main body when the pressure in the container main body exceeds a predetermined pressure are known. (See Patent Document 1). In such a breathable container, a plurality of through holes are provided in the sealing plate of the container body, and a gas vent valve and a pressure valve are provided for different through holes among the plurality of through holes.

前記ガス抜き弁は、シート状の透過性ゴムと該透過性ゴムを貫通孔に対して固定する固定手段とを有してなり、複数の貫通孔のうち一つの貫通孔に嵌合して設けられている（特許文献１の図４参照）。一方、前記圧力弁は、複数の貫通孔のうち前記ガス抜き弁用の貫通孔とは異なる他貫通孔に嵌合して設けられている。   The degassing valve has a sheet-like permeable rubber and a fixing means for fixing the permeable rubber to the through-hole, and is provided by fitting into one through-hole among the plurality of through-holes. (See FIG. 4 of Patent Document 1). On the other hand, the pressure valve is fitted and provided in another through hole different from the through hole for the gas vent valve among the plurality of through holes.

特開２００６−１０８１８５号公報JP 2006-108185 A

つまり、上記のような通気性容器では、ガス抜き弁（気体透過部材）を設ける貫通孔と圧力弁を設ける貫通孔とが容器本体（具体的には、封口板）に別個に形成される必要があるが、通気性容器においては、容器本体（具体的には、封口板）の強度や意匠性の向上、内部空間への異物の混入の防止、容器本体（具体的には、封口板）の小型化等の観点から、容器本体（具体的には、封口板）に形成される貫通孔は、少ない方が望ましい。   That is, in the above-described breathable container, a through hole for providing a gas vent valve (gas permeable member) and a through hole for providing a pressure valve need to be separately formed in the container body (specifically, a sealing plate). However, in the case of breathable containers, the strength and design of the container body (specifically, the sealing plate) is improved, foreign matter is prevented from entering the internal space, and the container body (specifically, the sealing plate) From the standpoint of downsizing and the like, it is desirable that the number of through holes formed in the container main body (specifically, the sealing plate) is small.

そこで、本発明は、容器本体の内部空間への異物の混入を抑制することができると共に、容器本体の強度および意匠性を向上させることができ、更には、容器本体を小型化することができる気体透過部材および通気性容器を提供することを課題とする。   Therefore, the present invention can suppress the mixing of foreign matter into the internal space of the container body, can improve the strength and design of the container body, and can further reduce the size of the container body. It is an object to provide a gas permeable member and a breathable container.

本発明に係る気体透過部材は、内部空間を有する容器本体に形成されて該容器本体の外側の空間と前記内部空間とを連通させる貫通孔に対し取付可能に構成され、内部空間の気体を容器本体の外側の空間に透過可能な気体透過シートと、気体が流通するための気体流通孔を有すると共に該気体流通孔内に気体透過シートを保持する保持体とを備える気体透過部材であって、前記保持体は、前記内部空間の圧力が所定圧を上回った際に内部空間の気体を容器本体の外側の空間に放出可能な圧力弁を有することを特徴とする。   The gas permeable member according to the present invention is formed in a container main body having an internal space, and is configured to be attachable to a through hole that communicates the space outside the container main body with the internal space. A gas permeable member comprising a gas permeable sheet that is permeable to a space outside the main body, and a holding body that has a gas flow hole for gas to flow and holds the gas permeable sheet in the gas flow hole, The holding body includes a pressure valve capable of releasing the gas in the internal space to the space outside the container body when the pressure in the internal space exceeds a predetermined pressure.

斯かる構成によれば、内部空間から排出される気体を透過させる部位（気体透過シートおよび気体流通孔を備える部位）と圧力弁とを気体透過部材が備えるため、該気体透過部材を一つの貫通孔に取り付けることで、内部空間から排出される気体を透過させる部位（気体透過シートおよび気体流通孔を備える部位）と圧力弁とを一つの貫通孔に対して設けることができる。このため、気体を透過させる部位（気体透過シートおよび気体流通孔を備える部位）を設ける貫通孔と、圧力弁を設ける貫通孔とを別個に形成する場合よりも、容器本体に貫通孔を設ける数を少なくすることができる。これにより、容器本体の内部空間へ貫通孔から異物が混入するのを抑制することができると共に、容器本体の強度および意匠性を向上させることができ、更には、容器本体の小型化を図ることができる。   According to such a configuration, since the gas permeable member includes a portion (a portion including the gas permeable sheet and the gas circulation hole) that allows the gas discharged from the internal space to pass therethrough and the pressure valve, the gas permeable member passes through the gas permeable member. By attaching to a hole, the site | part (part provided with a gas permeable sheet and a gas circulation hole) and the pressure valve which permeate | transmit the gas discharged | emitted from internal space can be provided with respect to one through-hole. For this reason, the number of the through holes provided in the container main body is larger than the case where the through holes for providing the gas permeable portion (the portion having the gas permeable sheet and the gas flow hole) and the through holes for providing the pressure valve are formed separately. Can be reduced. As a result, it is possible to prevent foreign matters from entering the internal space of the container body from the through hole, improve the strength and design of the container body, and further reduce the size of the container body. Can do.

また、本発明に係る気体透過部材では、前記気体透過シートは、複数の気体透過シートからなり、該複数の気体透過シートは、特定の気体を選択的に透過させる選択性透過シートと、特定の気体に対する選択性を有さない非選択性透過シートとを備え、前記選択性透過シートの少なくとも一方の面側に、前記非選択性透過シートが重なるように配置されることも可能である。   Further, in the gas permeable member according to the present invention, the gas permeable sheet includes a plurality of gas permeable sheets, and the plurality of gas permeable sheets include a selective permeable sheet that selectively transmits a specific gas, and a specific permeable sheet. It is also possible to provide a non-selective permeable sheet that does not have selectivity for gas, and to dispose the non-selective permeable sheet so as to overlap at least one surface side of the selective permeable sheet.

斯かる構成によれば、前記気体透過シートは、複数の気体透過シートからなり、該複数の気体透過シートは、特定の気体を選択的に透過させる選択性透過シートと、特定の気体に対する選択性を有さない非選択性透過シートとを備え、前記選択性透過シートの少なくとも一方の面側に、前記非選択性透過シートが重なるように配置されるため、非選択性透過シートによって選択性透過シートが保護されており、選択性透過シートの性能低下を抑制して特定の気体に対する透過性能を担保できる。   According to such a configuration, the gas permeable sheet includes a plurality of gas permeable sheets, and the plurality of gas permeable sheets include a selective permeable sheet that selectively transmits a specific gas, and selectivity to the specific gas. A non-selective permeation sheet, and the non-selective permeation sheet is arranged so that the non-selective permeation sheet overlaps at least one side of the selective permeation sheet. The sheet | seat is protected and the permeation performance with respect to specific gas can be ensured by suppressing the performance fall of a selective permeation | transmission sheet | seat.

また、前記圧力弁が気体流通孔内に設けられて構成されることも可能である。   Further, the pressure valve may be provided in the gas flow hole.

斯かる構成によれば、気体透過シートと圧力弁とが気体流通孔内に位置するため、気体透過部材の構成を極めて簡易化することができると共に、気体透過部材の小型化を図ることができる。   According to such a configuration, since the gas permeable sheet and the pressure valve are located in the gas flow hole, the configuration of the gas permeable member can be extremely simplified and the gas permeable member can be miniaturized. .

本発明に係る通気性容器では、前記気体透過部材と、該気体透過部材が取り付けられる貫通孔を有する容器本体と備えることを特徴とする。   The breathable container according to the present invention includes the gas permeable member and a container body having a through hole to which the gas permeable member is attached.

本発明の気体透過部材および通気性容器によれば、容器本体の内部空間への異物の混入を抑制することができると共に、容器本体の強度および意匠性を向上させることができ、更には、容器本体を小型化することができる。   According to the gas permeable member and the air permeable container of the present invention, it is possible to suppress the mixing of foreign matters into the internal space of the container body, improve the strength and design of the container body, and further The main body can be miniaturized.

本願発明の一実施形態に係る気体透過部材を備える通気性容器を示した断面斜視図を示す。The cross-sectional perspective view which showed the air permeable container provided with the gas permeable member which concerns on one Embodiment of this invention is shown. 同実施形態に係る気体透過部材を示した断面斜視の分解図を示す。The exploded view of the section perspective view showing the gas permeable member concerning the embodiment is shown.

以下、本発明の一実施形態について図１と図２を参照しながら説明する。   Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

本実施形態に係る通気性容器は、例えば二次電池や電解コンデンサ（アルミ電解コンデンサ等）や電気二重層キャパシタ等の蓄電素子の容器である。図１に示すように、通気性容器Ａ１は、所定部材（例えば電極や電解液）を収容する内部空間Ｓを有する容器本体Ａと、該容器本体Ａに取り付けられて内部空間Ｓからの気体を透過させて容器本体の外側の空間（以下、外部空間とも記す）へ排出する気体透過部材１とを備える。具体的には、容器本体Ａは、内部空間Ｓと外部空間とを連通させる貫通孔Ｃ１を備え、該貫通孔Ｃ１に気体透過部材１が取り付けられることで、通気性容器Ａ１が構成される。   The breathable container according to the present embodiment is a container for a storage element such as a secondary battery, an electrolytic capacitor (such as an aluminum electrolytic capacitor), or an electric double layer capacitor. As shown in FIG. 1, the air permeable container A1 includes a container body A having an internal space S that accommodates a predetermined member (for example, an electrode or an electrolyte), and gas from the internal space S attached to the container body A. And a gas permeable member 1 that is permeated and discharged to a space outside the container body (hereinafter also referred to as an external space). Specifically, the container body A includes a through-hole C1 that allows the internal space S and the external space to communicate with each other, and the gas-permeable member 1 is attached to the through-hole C1, whereby the breathable container A1 is configured.

本実施形態の容器本体Ａは、開口部を有し該開口部から所定部材を収容可能な本体部Ｂと、該本体部Ｂの前記開口部を閉塞する容器蓋体Ｃ（閉塞体）とを有する。本実施形態の本体部Ｂは、有底筒状をなして上面開口しており、具体的には円板状の底壁と該底壁の周縁に立設される側壁とを有して構成される。本実施形態の容器蓋体Ｃは、板状体であり具体的には円板である。容器蓋体Ｃには、厚み方向に貫通する貫通孔Ｃ１が設けられている。貫通孔Ｃ１は、一又は複数の孔であり、本実施形態の貫通孔Ｃ１は、円板である容器蓋体Ｃの径方向中央部に貫通する一の孔である。この容器蓋体Ｃは、本体部Ｂの上面開口を閉塞するように本体部Ｂに嵌合可能に構成される。   The container main body A of the present embodiment includes a main body B that has an opening and can accommodate a predetermined member from the opening, and a container lid C (closing body) that closes the opening of the main body B. Have. The main body B of the present embodiment has a bottomed cylindrical shape and is open on the top surface, and specifically includes a disk-shaped bottom wall and side walls that are provided upright at the periphery of the bottom wall. Is done. The container lid C of the present embodiment is a plate-like body, specifically a disc. The container lid C is provided with a through hole C1 penetrating in the thickness direction. The through-hole C1 is one or a plurality of holes, and the through-hole C1 of the present embodiment is one hole that penetrates through the central portion in the radial direction of the container lid C that is a disk. The container lid C is configured to be fitted to the main body B so as to close the upper surface opening of the main body B.

斯かる容器本体Ａでは、容器蓋体Ｃが本体部Ｂの開口部に嵌合されることにより、本体部Ｂと容器蓋体Ｃとの内面により確定される内部空間Ｓが形成されており、該内部空間Ｓに所定部材が収容され得る。また容器蓋体Ｃの貫通孔Ｃ１は内部空間Ｓと外部空間とを連通する孔になっており、該貫通孔Ｃ１に気体透過部材１が取り付けられる。   In such a container main body A, the inner space S defined by the inner surfaces of the main body B and the container lid C is formed by fitting the container lid C into the opening of the main body B. A predetermined member can be accommodated in the internal space S. The through hole C1 of the container lid C is a hole that communicates the internal space S and the external space, and the gas permeable member 1 is attached to the through hole C1.

本実施形態の気体透過部材１は、図２に示すように、内部空間Ｓの気体を透過させる気体透過シート２と、内部空間Ｓの圧力である内圧が所定圧を上回った際に内部空間Ｓの気体を外部空間に放出可能な圧力弁（防爆弁）３と、気体透過シート２および圧力弁３を保持して貫通孔Ｃ１に取付可能な保持体４と、保持体４が貫通孔Ｃ１に取り付けられる際に保持体４と貫通孔Ｃ１の間に介在する封止体５とを備える。   As shown in FIG. 2, the gas permeable member 1 of the present embodiment includes a gas permeable sheet 2 that allows gas in the internal space S to pass through and the internal space S when the internal pressure that is the pressure in the internal space S exceeds a predetermined pressure. A pressure valve (explosion proof valve) 3 capable of releasing the gas in the external space, a holding body 4 that holds the gas permeable sheet 2 and the pressure valve 3 and can be attached to the through hole C1, and the holding body 4 in the through hole C1. A sealing body 5 is provided between the holding body 4 and the through hole C1 when attached.

気体透過シート２としては、特定の気体を選択的に透過させる選択性透過シート２ａや、特定の気体に対して選択性を有さない非選択性透過シート２ｂが用いられる。本実施形態では、複数（具体的には３枚）の気体透過シート２が用いられ、一つが選択性透過シート２ａであり、他の二つが非選択性透過シート２ｂである。   As the gas permeable sheet 2, a selective permeable sheet 2a that selectively permeates a specific gas or a non-selective permeable sheet 2b that does not have selectivity with respect to a specific gas is used. In the present embodiment, a plurality (specifically, three) of gas permeable sheets 2 are used, one is a selective permeable sheet 2a, and the other two are non-selective permeable sheets 2b.

選択性透過シート２ａは、一方の面側から他方の面側へ特定の気体を選択的に透過可能に構成される。選択性透過シート２ａが透過可能な気体としては、特に限定されるものではなく、例えば、水素、二酸化炭素、酸素等のガスが挙げられる。   The selective permeation sheet 2a is configured to be able to selectively permeate a specific gas from one surface side to the other surface side. The gas that can be transmitted through the selective permeable sheet 2a is not particularly limited, and examples thereof include gases such as hydrogen, carbon dioxide, and oxygen.

水素ガスに対する選択性を有する選択性透過シート２ａとしては、例えば、芳香族ポリイミド等の樹脂を含むシート材や、水素透過性金属（バナジウム、バナジウム合金、パラジウム合金、ニオブ、ニオブ合金等）の層を含むシート材から構成されたものが挙げられる。水素透過性金属層を含むシート材としては、水素透過性金属層のみからなるシート材（金属箔）や、樹脂シート等の基材層に金属層が蒸着等されてなるシート材等が挙げられる。二酸化炭素を選択的に透過させる選択性透過シート２ａとしては、シリコーンゴムからなるシート材、ＰＶＡ架橋シート材、ＰＥＧ架橋シート材等から構成されるものが挙げられる。   Examples of the selective permeable sheet 2a having selectivity for hydrogen gas include a sheet material containing a resin such as aromatic polyimide, and a layer of hydrogen permeable metal (vanadium, vanadium alloy, palladium alloy, niobium, niobium alloy, etc.). What is comprised from the sheet | seat material containing is mentioned. Examples of the sheet material including the hydrogen permeable metal layer include a sheet material (metal foil) composed of only the hydrogen permeable metal layer, a sheet material obtained by depositing a metal layer on a base material layer such as a resin sheet, and the like. . Examples of the selectively permeable sheet 2a that selectively transmits carbon dioxide include a sheet material made of silicone rubber, a PVA crosslinked sheet material, a PEG crosslinked sheet material, and the like.

非選択性透過シート２ｂは、選択性透過シート２ａと重なるように選択性透過シート２ａの少なくとも一方の面側（本実施形態では両面側）に配置される。非選択性透過シート２ｂとしては、重ねられる選択性透過シート２ａの性状等に応じて適宜選択可能であるが、例えば、ポリテトラフルオロエチレン（ＰＴＦＥ）、セラミック、金属、樹脂等からなる多孔質膜等のシート材から構成されるものが挙げられる。特に、ＰＴＦＥからなる多孔質膜は、撥水性が高く、耐熱性、耐薬品性も高いため、非選択性透過シート２ｂを構成するシート材として好ましい。本実施形態の非選択性透過シート２ｂは、ＰＴＦＥからなる多孔質膜のシート材で構成される。   The non-selective permeable sheet 2b is disposed on at least one side of the selective permeable sheet 2a (both sides in the present embodiment) so as to overlap the selective permeable sheet 2a. The non-selective permeable sheet 2b can be appropriately selected according to the properties of the selective permeable sheet 2a to be overlaid. For example, a porous film made of polytetrafluoroethylene (PTFE), ceramic, metal, resin, or the like The thing comprised from sheet materials, such as these, is mentioned. In particular, a porous membrane made of PTFE has high water repellency, high heat resistance, and high chemical resistance, and thus is preferable as a sheet material constituting the non-selective permeable sheet 2b. The non-selective permeable sheet 2b of the present embodiment is composed of a porous membrane sheet material made of PTFE.

圧力弁３は、内部空間Ｓの圧力である内圧が所定圧を上回った際に容器本体Ａが破裂することを防止すべく内部空間Ｓの気体を外部空間に放出可能に構成された破断弁又は開閉弁である。破断弁は、内圧が所定圧を上回った際に破断するように構成され、例えばシート状やキャップ状のシリコーンゴム等である。開閉弁は、内圧が所定圧を上回ると気体流路に対し開口状態となり、内圧が所定圧に至っていないと気体流路に対し閉口状態となるように、内圧に応じて気体流路に対し開閉可能に構成され、例えば気体流路を内側に形成する筒状体と該筒状体の開口を開閉可能な開閉体とを備えてなる。本実施形態の圧力弁３は、キャップ状（具体的には天壁部と該天壁部の下面外周縁から垂設される側壁部とを有するキャップ状）のシリコーンゴムで構成される。   The pressure valve 3 is a break valve configured to be capable of releasing the gas in the internal space S to the external space in order to prevent the container body A from bursting when the internal pressure, which is the pressure in the internal space S, exceeds a predetermined pressure. Open / close valve. The break valve is configured to break when the internal pressure exceeds a predetermined pressure, and is, for example, a sheet-like or cap-like silicone rubber. The on-off valve opens and closes to the gas flow path according to the internal pressure so that it opens to the gas flow path when the internal pressure exceeds a predetermined pressure, and closes to the gas flow path when the internal pressure does not reach the predetermined pressure. For example, a cylindrical body that forms a gas flow path inside and an opening / closing body that can open and close the opening of the cylindrical body are provided. The pressure valve 3 of the present embodiment is made of a cap-like silicone rubber (specifically, a cap shape having a top wall portion and a side wall portion suspended from the outer periphery of the lower surface of the top wall portion).

保持体４は、貫通孔Ｃ１に取付可能に構成され、本実施形態では板状体をなす。具体的には、本実施形態の保持体４は、封止体５を介して貫通孔Ｃ１に取り付けられるように貫通孔Ｃ１の径よりも小さい径を有する円板状をなす。保持体４を構成する材質としては、特に限定されるものではなく、例えば、ポリブチレンテレフタレート（ＰＢＴ）、アクリロニトリルブタジエンスチレン樹脂（ＡＢＳ樹脂）、熱可塑性エラストマー等の熱可塑性樹脂等が挙げられる。成形が容易である点から熱可塑性樹脂を用いることが好ましい。なお、保持体４を構成する材質は、金属材料として、ステンレス鋼材（ＳＵＳ）、アルミ等で構成することも可能である。   The holding body 4 is configured to be attachable to the through-hole C1, and forms a plate-like body in the present embodiment. Specifically, the holding body 4 of the present embodiment has a disk shape having a diameter smaller than the diameter of the through hole C1 so as to be attached to the through hole C1 via the sealing body 5. The material constituting the holder 4 is not particularly limited, and examples thereof include thermoplastic resins such as polybutylene terephthalate (PBT), acrylonitrile butadiene styrene resin (ABS resin), and thermoplastic elastomer. It is preferable to use a thermoplastic resin from the viewpoint of easy molding. In addition, the material which comprises the holding body 4 can also be comprised with a stainless steel material (SUS), aluminum, etc. as a metal material.

斯かる保持体４は、内部空間Ｓ側から外部空間への一方向に気体を流通させる気体流通孔４ａを備え、該気体流通孔４ａの両端部には、内部空間Ｓ側の流入口と外部空間側の排出口とが形成される。つまり、保持体４は、気体流通孔４ａ内に、気体流通孔４ａの流入口側から排出口側へ向かって気体を流通させる流路を備える。これにより、保持体４は、気体流通孔４ａの流入口を備える裏面４ｂ側から気体流通孔４ａ内に流入する気体を気体流通孔４ａの排出口を備える表面４ｃ側に向かって排出可能に構成される。本実施形態では、保持体４には、表面４ｃの径方向中央部寄りに裏面４ｂまで貫通する二つの気体流通孔４ａが形成される。一方の気体流通孔４１ａは、気体透過シート２が設けられるための気体透過用孔であり、他方の気体流通孔４２ａは、圧力弁３が設けられるための圧力弁用孔である。   The holding body 4 includes a gas flow hole 4a for flowing gas in one direction from the internal space S side to the external space, and an inlet and an external port on the internal space S side are provided at both ends of the gas flow hole 4a. A space-side discharge port is formed. That is, the holding body 4 includes a flow path through which gas flows in the gas flow hole 4a from the inlet side to the discharge port side of the gas flow hole 4a. Thereby, the holding body 4 is configured to be able to discharge the gas flowing into the gas circulation hole 4a from the back surface 4b side including the inlet of the gas circulation hole 4a toward the surface 4c side including the discharge port of the gas circulation hole 4a. Is done. In the present embodiment, the holding body 4 is formed with two gas flow holes 4a penetrating to the back surface 4b near the radial center of the front surface 4c. One gas flow hole 41 a is a gas transmission hole for providing the gas permeable sheet 2, and the other gas flow hole 42 a is a pressure valve hole for providing the pressure valve 3.

気体透過用孔である一方の気体流通孔４１ａは、気体透過シート２が保持されるように構成される。本実施形態の一方の気体流通孔４１ａは、孔の軸線に沿って一端側（裏面４ｂ側）から他端側（表面４ｃ側）へ向かって、軸線に直交する断面形状が断続的および／又は連続的（本実施形態では、断続的）に大きくなるように形成される。具体的には、一方の気体流通孔４１ａは、最も一端側に形成される第一壁部４１０と、該第一壁部４１０よりも他端側に形成されて第一壁部４１０よりも断面形状が大きい第二壁部４１１と、該第二壁部４１１よりも他端側に形成されて第二壁部４１１よりも断面形状が大きい第三壁部４１２と、最も他端側に形成される第四壁部４１３とを備える。各壁部４１０，４１１，４１２，４１３は、軸線に沿って形成される。この各壁部４１０，４１１，４１２，４１３により段差が形成されている。すなわち第一壁部４１０の上端部と第二壁部４１１の下端部とは連結され、第二壁部４１１の上端部と第三壁部４１２の下端部とは連結され、第三壁部４１２の上端部と第四壁部４１３の下端部とは連結されており、斯かる各壁部４１０，４１１，４１２，４１３間の連結部に気体透過シート２が配置可能になっている。本実施形態の連結部は、環状の平面をなし、一端側から他端側にかけて３つ形成され、各連結部には一端側から順に非選択性透過シート２ｂ、選択性透過シート２ａ、非選択性透過シート２ｂが設けられている。   One gas flow hole 41a which is a gas permeation hole is configured such that the gas permeable sheet 2 is held. One gas flow hole 41a of the present embodiment has an intermittent and / or cross-sectional shape perpendicular to the axis from one end side (back surface 4b side) to the other end side (front surface 4c side) along the axis of the hole. It is formed so as to increase continuously (in the present embodiment, intermittently). Specifically, one of the gas flow holes 41 a is formed on the first wall portion 410 that is formed on the most end side, and is formed on the other end side of the first wall portion 410 and has a cross section that is wider than the first wall portion 410. A second wall portion 411 having a large shape, a third wall portion 412 formed on the other end side than the second wall portion 411 and having a larger cross-sectional shape than the second wall portion 411, and formed on the other end side. And a fourth wall portion 413. Each wall part 410,411,412,413 is formed along an axis. Steps are formed by these wall portions 410, 411, 412 and 413. That is, the upper end portion of the first wall portion 410 and the lower end portion of the second wall portion 411 are connected, the upper end portion of the second wall portion 411 and the lower end portion of the third wall portion 412 are connected, and the third wall portion 412 is connected. Are connected to the lower end of the fourth wall portion 413, and the gas permeable sheet 2 can be arranged at the connecting portion between the wall portions 410, 411, 412, and 413. The connection part of this embodiment comprises an annular plane, and is formed in three from one end side to the other end side. In each connection part, the non-selective transmission sheet 2b, the selective transmission sheet 2a, and the non-selection are sequentially formed from one end side. A transparent permeable sheet 2b is provided.

圧力弁３用孔である他方の気体流通孔４２ａは、圧力弁３が保持されるように構成される。本実施形態の他方の気体流通孔４２ａは、圧力弁３の径と同じ又は圧力弁３の径よりも僅かに小さい径を有する略円柱状の孔であり、圧力弁３を嵌合して圧着可能に形成されている。   The other gas flow hole 42a, which is a hole for the pressure valve 3, is configured to hold the pressure valve 3. The other gas flow hole 42a of the present embodiment is a substantially cylindrical hole having a diameter that is the same as or slightly smaller than the diameter of the pressure valve 3, and is fitted with the pressure valve 3 for pressure bonding. It is made possible.

封止体５は、貫通孔Ｃ１に設けられる保持体４（側面）と貫通孔Ｃ１（貫通孔Ｃ１を形成する容器蓋体Ｃの内面）との隙間から容器本体Ａの内部空間Ｓに、外部空間からの異物混入を防止すべく、該隙間を封止するように構成される。本実施形態の封止体５は、筒状の本体部と、保持体４を係止する保持体係止部５ａと、容器蓋体Ｃに係止する蓋体係止部５ｂとを有してなる。具体的には、本実施形態の封止体５は、円筒状の本体部と、該本体部（上端部）の内面から径方向内側に凸設する保持体係止部５ａと、該本体部（下端部）の外面から径方向外側に凸設する蓋体係止部５ｂとを有してなる。保持体係止部５ａは、環状の突出部であり、その下面と本体部内面とにより保持体４を係止（例えば接着）するように構成される。蓋体係止部５ｂは、環状の突出部であり、その上面と本体部外面とにより容器蓋体Ｃに係止（例えば接着）するように構成される。斯かる封止体５は、例えばシリコーンゴムやエチレン−プロピレン−ジエンゴム（ＥＰＤＭ）からなる弾性体樹脂のパッキンで構成され得る。   The sealing body 5 is connected to the internal space S of the container main body A from the gap between the holding body 4 (side surface) provided in the through hole C1 and the through hole C1 (inner surface of the container lid C forming the through hole C1). In order to prevent foreign matter from entering from the space, the gap is sealed. The sealing body 5 of the present embodiment includes a cylindrical main body, a holding body locking portion 5a that locks the holding body 4, and a lid locking portion 5b that locks the container lid C. It becomes. Specifically, the sealing body 5 of the present embodiment includes a cylindrical main body portion, a holding body locking portion 5a that protrudes radially inward from the inner surface of the main body portion (upper end portion), and the main body portion. And a lid locking portion 5b that protrudes radially outward from the outer surface of the (lower end). The holding body locking portion 5a is an annular projecting portion, and is configured to lock (for example, bond) the holding body 4 with the lower surface and the inner surface of the main body portion. The lid locking portion 5b is an annular protruding portion, and is configured to be locked (for example, bonded) to the container lid C by the upper surface and the outer surface of the main body. Such a sealing body 5 may be formed of an elastic resin packing made of, for example, silicone rubber or ethylene-propylene-diene rubber (EPDM).

以上の構成からなる通気性容器Ａ１では、本体部Ｂの内部空間Ｓに所定部材を収納し、本体部Ｂの上面開口を閉塞するように本体部Ｂに容器蓋体Ｃが取り付けられ、該容器蓋体Ｃの貫通孔Ｃ１に封止体５を介して気体透過部材１が取り付けられている。封止体５は、蓋体係止部５ｂにより貫通孔Ｃ１に係止されると共に保持体係止部５ａにより気体透過部材１を係止している。気体透過部材１の保持体４は、一方の気体流通孔４１ａの連結部に気体透過シート２の周縁部を載置し接着（具体的には、両面テープやヒートシールを用いて接着）することにより気体透過シート２を保持している。気体透過シート２は、一方の気体流通孔４１ａにおいて一端側（裏面４ｂ側）から非選択性透過シート２ｂ、選択性透過シート２ａ、非選択性透過シート２ｂの順に気体流路と交差して配置されている。また、各気体透過シート２は、気体流通孔４１ａの軸線方向に互いに離間して間隔を空けた状態で重なるように配置されており、気体透過シート２間に空間が形成される。   In the breathable container A1 configured as described above, a predetermined member is accommodated in the internal space S of the main body B, and a container lid C is attached to the main body B so as to close the upper surface opening of the main body B. The gas permeable member 1 is attached to the through hole C <b> 1 of the lid C via the sealing body 5. The sealing body 5 is locked to the through-hole C1 by the lid locking portion 5b and locks the gas permeable member 1 by the holding body locking portion 5a. The holding body 4 of the gas permeable member 1 is placed and bonded (specifically, bonded using a double-sided tape or a heat seal) on the periphery of the gas permeable sheet 2 at the connecting portion of one gas flow hole 41a. Holds the gas permeable sheet 2. The gas permeable sheet 2 is arranged so as to cross the gas flow path in order of the non-selective permeable sheet 2b, the selective permeable sheet 2a, and the non-selective permeable sheet 2b from one end side (the back surface 4b side) in one gas flow hole 41a. Has been. Further, the gas permeable sheets 2 are arranged so as to be separated from each other in the axial direction of the gas flow holes 41 a and are overlapped with each other, and a space is formed between the gas permeable sheets 2.

ここで、気体透過部材１の保持体４は、他方の気体流通孔４２ａに圧力弁３を接着（具体的には、両面テープやヒートシールを用いて接着）して保持している。このように容器本体Ａ（容器蓋体Ｃ）の貫通孔Ｃ１に取り付けられた気体透過部材１の保持体４が気体透過シート２と圧力弁３を気体流通孔４ａに保持した状態では、気体透過シート２と圧力弁３は貫通孔Ｃ１内（又は貫通孔Ｃ１による気体流路）に配置される。よって、容器本体Ａでは、気体透過部材１を設けるための貫通孔Ｃ１の他に圧力弁を設けるための貫通孔を要しない。   Here, the holding body 4 of the gas permeable member 1 holds the pressure valve 3 bonded to the other gas flow hole 42a (specifically, bonded using a double-sided tape or heat seal). Thus, in the state where the holding body 4 of the gas permeable member 1 attached to the through hole C1 of the container main body A (container lid C) holds the gas permeable sheet 2 and the pressure valve 3 in the gas flow hole 4a, the gas permeable The seat 2 and the pressure valve 3 are disposed in the through hole C1 (or a gas flow path by the through hole C1). Therefore, the container main body A does not require a through hole for providing a pressure valve in addition to the through hole C1 for providing the gas permeable member 1.

斯かる通気性容器Ａ１では、蓄電素子（電極）の通常使用時に通気性容器Ａ１（具体的には、容器本体Ａ）の内部で発生した気体が気体透過部材１の気体透過シート２を通じて外側へ排出可能となる。具体的には、容器本体Ａ内で気体が発生することによって容器本体Ａの内圧が上昇する。これに伴って、容器本体Ａ内の気体は、一方の気体流通孔４１ａ内へ容器蓋体裏面４ｂ側の流入口から流入する。そして、一方の気体流通孔４１ａに流入した気体は、容器蓋体表面４ｃ側の排出口側へ向かって一方の気体流通孔４１ａ内を流通する際に、各気体透過シート２を透過する。そして、各気体透過シート２を透過した気体は、一方の気体流通孔４１ａの排出口から通気性容器Ａ１の外側へ排出される。これにより、容器本体Ａの内圧が低下することになる。一方、蓄電素子（電極）の使用時に、通気性容器Ａ１の内圧が異常に急上昇して所定圧を上回った際には、通気性容器Ａ１の内部で発生した気体が気体透過部材１の圧力弁３を通じて外側へ排出可能となる。具体的には、圧力弁３が破断することにより内部空間Ｓの気体を外部空間に放出し、容器本体Ａが高い内圧により爆発することを防止する。   In such a breathable container A1, the gas generated inside the breathable container A1 (specifically, the container main body A) during normal use of the electricity storage element (electrode) is exposed to the outside through the gas permeable sheet 2 of the gas permeable member 1. It becomes possible to discharge. Specifically, when gas is generated in the container main body A, the internal pressure of the container main body A increases. Along with this, the gas in the container main body A flows into the one gas circulation hole 41a from the inlet on the container lid rear surface 4b side. And the gas which flowed into one gas circulation hole 41a permeate | transmits each gas permeation | transmission sheet | seat 2 when distribute | circulating the inside of one gas circulation hole 41a toward the discharge port side by the side of the container lid body 4c. And the gas which permeate | transmitted each gas permeable sheet 2 is discharged | emitted from the discharge port of one gas distribution hole 41a to the outer side of air permeable container A1. Thereby, the internal pressure of the container main body A will fall. On the other hand, when the internal pressure of the air permeable container A1 rises abnormally and exceeds a predetermined pressure during use of the electricity storage element (electrode), the gas generated inside the air permeable container A1 is a pressure valve of the gas permeable member 1. 3 can be discharged outside. Specifically, when the pressure valve 3 is broken, the gas in the internal space S is released to the external space, and the container body A is prevented from exploding due to a high internal pressure.

以上のように、本発明に係る気体透過部材１は、内部空間Ｓを有する容器本体Ａに形成されて該容器本体Ａの外側の空間と前記内部空間Ｓとを連通させる貫通孔Ｃ１に対し取付可能に構成され、内部空間Ｓの気体を容器本体Ａの外側の空間に透過可能な気体透過シート２と、気体が流通するための気体流通孔４ａを有すると共に該気体流通孔４ａ内に気体透過シート２を保持する保持体４とを備える気体透過部材１であって、前記保持体４は、前記内部空間Ｓの圧力が所定圧を上回った際に内部空間Ｓの気体を容器本体Ａの外側の空間に放出可能な圧力弁を有することを特徴とする。   As described above, the gas permeable member 1 according to the present invention is attached to the through hole C1 that is formed in the container main body A having the internal space S and communicates the space outside the container main body A with the internal space S. The gas permeable sheet 2 that is configured to be capable of transmitting the gas in the internal space S to the space outside the container main body A, and the gas flow holes 4a through which the gas flows, and gas is transmitted through the gas flow holes 4a. The gas permeable member 1 includes a holding body 4 that holds a sheet 2, and the holding body 4 causes the gas in the internal space S to flow outside the container body A when the pressure in the internal space S exceeds a predetermined pressure. It has the pressure valve which can discharge | release to the space of this.

また、本実施形態に係る通気性容器Ａは、前記気体透過部材１と、該気体透過部材１が取り付けられる貫通孔Ｃ１を有する容器本体Ａとを備えることを特徴とする。   Moreover, the air permeable container A which concerns on this embodiment is provided with the said gas permeable member 1, and the container main body A which has the through-hole C1 to which this gas permeable member 1 is attached, It is characterized by the above-mentioned.

よって、内部空間Ｓから排出される気体を透過させる部位（気体透過シート２および気体流通孔４ａを備える部位）と圧力弁３とを気体透過部材１が備えるため、該気体透過部材１を一つの貫通孔Ｃ１に取り付けることで、内部空間Ｓから排出される気体を透過させる部位（気体透過シート２および気体流通孔４ａを備える部位）と圧力弁３とを一つの貫通孔Ｃ１に対して設けることができる。このため、気体を透過させる部位（気体透過シート２および気体流通孔４ａを備える部位）を設ける貫通孔Ｃ１と、圧力弁３を設ける貫通孔Ｃ１とを別個に形成する場合よりも、容器本体Ａに貫通孔Ｃ１を設ける数を少なくすることができる。これにより、容器本体Ａの内部空間Ｓへ貫通孔Ｃ１から異物が混入するのを抑制することができると共に、容器本体Ａの強度および意匠性を向上させることができ、更には、容器本体Ａの小型化を図ることができる。   Therefore, since the gas permeable member 1 is provided with the part (the part provided with the gas permeable sheet 2 and the gas flow hole 4a) and the pressure valve 3 that allow the gas discharged from the internal space S to pass through, By attaching to the through-hole C1, the site | part (part provided with the gas permeable sheet 2 and the gas distribution hole 4a) and the pressure valve 3 which permeate | transmit the gas discharged | emitted from the internal space S are provided with respect to one through-hole C1. Can do. For this reason, rather than the case where the through-hole C1 that provides the gas-permeable portion (the portion that includes the gas-permeable sheet 2 and the gas flow hole 4a) and the through-hole C1 that provides the pressure valve 3 are formed separately, the container body A The number of through-holes C1 can be reduced. Thereby, while being able to suppress a foreign material mixing into the internal space S of the container main body A from the through-hole C1, the intensity | strength and designability of the container main body A can be improved, Furthermore, the container main body A of Miniaturization can be achieved.

また、本実施形態に係る端子１では、前記気体透過シート２は、複数の気体透過シートからなり、該複数の気体透過シートは、特定の気体を選択的に透過させる選択性透過シート２ａと、特定の気体に対する選択性を有さない非選択性透過シート２ｂとを備え、前記選択性透過シート２ａの少なくとも一方の面側に、前記非選択性透過シート２ｂが重なるように配置される。ここで、選択性透過シート２ａは、例えば、水素ガスに対する選択性を有する選択性透過シートとして、水素透過性金属（バナジウム、バナジウム合金、パラジウム合金、ニオブ、ニオブ合金等）の層を含むシート材から構成され得る。さらに、前記水素透過性金属層を含むシート材としては、水素透過性金属層のみからなるシート材（金属箔）や、樹脂シート等の基材層に金属層が蒸着等されてなるシート材等で構成され得る。また、非選択性透過シート２ｂは、例えば、ポリテトラフルオロエチレンからなる多孔質膜のシート材を有して構成される。   Further, in the terminal 1 according to the present embodiment, the gas permeable sheet 2 includes a plurality of gas permeable sheets, and the plurality of gas permeable sheets include a selective permeable sheet 2a that selectively transmits a specific gas; And a non-selective permeable sheet 2b that does not have selectivity for a specific gas, and is arranged so that the non-selective permeable sheet 2b overlaps at least one surface side of the selective permeable sheet 2a. Here, the selective permeable sheet 2a is, for example, a sheet material including a layer of a hydrogen permeable metal (vanadium, vanadium alloy, palladium alloy, niobium, niobium alloy, etc.) as a selective permeable sheet having selectivity for hydrogen gas. Can be constructed. Furthermore, examples of the sheet material including the hydrogen permeable metal layer include a sheet material (metal foil) including only a hydrogen permeable metal layer, a sheet material obtained by depositing a metal layer on a base material layer such as a resin sheet, and the like. Can be configured. Further, the non-selective permeable sheet 2b is configured to have a porous membrane sheet material made of, for example, polytetrafluoroethylene.

かかる端子１によれば、前記気体透過シート２は、複数の気体透過シートからなり、該複数の気体透過シートは、特定の気体を選択的に透過させる選択性透過シート２ａと、特定の気体に対する選択性を有さない非選択性透過シート２ｂとを備え、前記選択性透過シート２ａの少なくとも一方の面側に、前記非選択性透過シート２ｂが重なるように配置されるため、非選択性透過シート２ｂによって選択性透過シート２ａが保護されており、選択性透過シート２ａの性能低下を抑制して特定の気体に対する透過性能を担保できる。さらに、非選択性透過シート２ｂは、ポリテトラフルオロエチレンからなる多孔質膜のシート材で構成されるため、気体透過シート２を所定サイズに成形することが極めて容易にできる。すなわち、斯かる気体透過部材１および通気性容器Ａ１によれば、気体透過シート２のサイズを容易に抑制でき気体透過部材１および通気性容器Ａ１を小型化できる。さらに、このように気体透過シート２のサイズを容易に小型化することができるため、気体透過部材１の保持体４にスペースを確保し易くなり、保持体４に対し圧力弁３を極めて設け易くできる。   According to the terminal 1, the gas permeable sheet 2 is composed of a plurality of gas permeable sheets, and the plurality of gas permeable sheets are selectively permeable to a specific gas and a specific permeable sheet 2a. A non-selective transparent sheet 2b having no selectivity, and the non-selective transparent sheet 2b is disposed so as to overlap at least one surface side of the selective transparent sheet 2a. The selective permeation sheet 2a is protected by the sheet 2b, and the permeation performance with respect to a specific gas can be secured by suppressing the performance degradation of the selective permeation sheet 2a. Furthermore, since the non-selective permeable sheet 2b is composed of a porous membrane sheet material made of polytetrafluoroethylene, the gas permeable sheet 2 can be very easily formed into a predetermined size. That is, according to the gas permeable member 1 and the air permeable container A1, the size of the gas permeable sheet 2 can be easily suppressed, and the gas permeable member 1 and the air permeable container A1 can be downsized. Furthermore, since the size of the gas permeable sheet 2 can be easily reduced as described above, it is easy to secure a space in the holding body 4 of the gas permeable member 1, and the pressure valve 3 is very easily provided to the holding body 4. it can.

また、本実施形態の気体透過シート２では、選択性透過シート２ａの両面側に非選択性透過シート２ｂ,２ｂが配置されることで、選択性透過シート２ａが両面側（具体的には、容器本体Ａの内部および外部）から汚染されるのが防止される。つまり、非選択性透過シート２ｂは、選択性透過シート２ａを汚染や損傷から保護する保護シートとして機能することにより、選択性透過シート２ａの質の低下を防止して製品価値を向上できる。   Further, in the gas permeable sheet 2 of the present embodiment, the non-selective permeable sheets 2b and 2b are arranged on both sides of the selective permeable sheet 2a, so that the selective permeable sheet 2a is on both sides (specifically, Contamination from the inside and outside of the container body A is prevented. That is, the non-selective permeable sheet 2b functions as a protective sheet that protects the selective permeable sheet 2a from contamination and damage, thereby preventing deterioration of the quality of the selective permeable sheet 2a and improving the product value.

なお、本発明に係る気体透過部材および通気性容器は、上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の変更が可能である。   The gas permeable member and the air permeable container according to the present invention are not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

例えば、上記実施形態では、気体透過部材１が封止体５を備える場合について説明したが、これに限らず、気体透過部材１は、封止体５を備えることなく、保持体４が貫通孔Ｃ１に嵌合して取り付けられるように構成することも可能である。例えば、保持体４は、貫通孔Ｃ１に接着（具体的には、両面テープやヒートシールを用いて接着）して取り付けられることが可能である。   For example, although the said embodiment demonstrated the case where the gas permeable member 1 was equipped with the sealing body 5, not only this but the gas permeable member 1 is not equipped with the sealing body 5, but the holding body 4 is a through-hole. It is also possible to configure so as to be fitted and attached to C1. For example, the holding body 4 can be attached to the through hole C1 by adhesion (specifically, adhesion using a double-sided tape or heat seal).

また、本実施形態の気体透過部材１では、保持体４の気体流通孔４ａは二つの孔で構成される場合について説明したが、これに限らず、気体流通孔４ａは一つの孔で構成することも可能である。   Moreover, in the gas permeable member 1 of this embodiment, although the case where the gas circulation hole 4a of the holding body 4 was comprised by two holes was demonstrated, not only this but the gas circulation hole 4a is comprised by one hole. It is also possible.

この場合、保持体４は、一つの気体流通孔４ａに対して、気体透過シート２と圧力弁３とを共に保持するように構成され得る。例えば、気体透過シート２と圧力弁３とは、一つの気体流通孔４ａに隣接して設けられる。斯かる気体透過部材１および通気性容器Ａ１によれば、保持体４に気体流通孔４ａが一つ設けられ、気体透過シート２と圧力弁３とが同じ気体流通孔４ａに設けられるため、気体透過部材１の構成を極めて簡易化でき製造費用の低減並びに小型化に資する。   In this case, the holding body 4 can be configured to hold both the gas permeable sheet 2 and the pressure valve 3 with respect to one gas flow hole 4a. For example, the gas permeable sheet 2 and the pressure valve 3 are provided adjacent to one gas flow hole 4a. According to the gas permeable member 1 and the air permeable container A1, the gas permeable sheet 4 and the pressure valve 3 are provided in the same gas flow hole 4a because the holding body 4 is provided with one gas flow hole 4a. The configuration of the transmissive member 1 can be greatly simplified, contributing to reduction in manufacturing cost and miniaturization.

あるいは、保持体４は、圧力弁３に連結して圧力弁３を保持可能な連結保持部を有し、前記一つの気体流通孔４ａに気体透過シート２を保持して前記連結保持部で圧力弁３を保持するように構成されることも可能である。   Alternatively, the holding body 4 has a connection holding portion that can be connected to the pressure valve 3 and hold the pressure valve 3, hold the gas permeable sheet 2 in the one gas flow hole 4 a, and pressurize with the connection holding portion. It can also be configured to hold the valve 3.

また、本実施形態では、保持体４の一方の気体流通孔４１ａの連結部に気体透過シート２が取り付けられるように構成されているが、これに限定されるものではなく、例えば、保持体４は、選択性透過シート２ａを設けるための連結部を有さず、保持体４を成形（例えば樹脂成形）する際に、気体流通孔４ａに気体透過シート２が設けられるように保持体４と気体透過シート２とが一体成形されてもよい。   Moreover, in this embodiment, although it comprises so that the gas permeable sheet 2 may be attached to the connection part of one gas circulation hole 41a of the holding body 4, it is not limited to this, For example, the holding body 4 Does not have a connecting part for providing the selectively permeable sheet 2a, and when the holder 4 is molded (for example, resin molding), the gas permeable sheet 2 is provided in the gas flow hole 4a. The gas permeable sheet 2 may be integrally formed.

また、本実施形態の他方の気体流通孔４２ａは、圧力弁３が嵌合して圧着可能に形成される場合について説明したが、これに限らず、他方の気体流通孔４２ａは、圧力弁３を係止するための係止部を有し、圧力弁３は係止部に係止される被係止部を備えて構成されることも可能である。   Moreover, although the other gas circulation hole 42a of this embodiment demonstrated the case where the pressure valve 3 fits and is formed so that crimping | compression-bonding is possible, not only this but the other gas circulation hole 42a is the pressure valve 3 The pressure valve 3 can be configured to include a locked portion that is locked to the locking portion.

また、本実施形態では、気体透過シート２として、選択性透過シート２ａと非選択性透過シート２ｂとが用いられているが、これに限定されるものではなく、例えば、選択性透過シート２ａ又は非選択性透過シート２ｂの何れか一方のみが気体透過シート２として一つ又は複数用いられてもよい。   Moreover, in this embodiment, although the selective permeable sheet 2a and the non-selective permeable sheet 2b are used as the gas permeable sheet 2, it is not limited to this, For example, the selective permeable sheet 2a or Only one or a plurality of the non-selective permeable sheets 2 b may be used as the gas permeable sheet 2.

また、本実施形態の選択性透過シート２ａを構成する素材は、特に限定されないが、通気性容器Ａ１内で発生する気体の種類に応じて選択されることで、特定の気体のみを通気性容器Ａ１の外側へ排出することが可能である。   Moreover, although the raw material which comprises the selective permeation | transmission sheet | seat 2a of this embodiment is not specifically limited, By selecting according to the kind of gas which generate | occur | produces in the air permeable container A1, only a specific gas is breathable container. It is possible to discharge to the outside of A1.

１…気体透過部材、２…気体透過シート、２ａ…選択性透過シート、２ｂ…非選択性透過シート、３…圧力弁、４…保持体、４ａ…気体流通孔、４１ａ…一方の気体流通孔（気体透過シート用孔）、４２ａ…他方の気体流通孔（圧力弁用孔）、５…封止体、Ａ１…通気性容器、Ａ…容器本体、Ｂ…本体部、Ｃ…容器蓋体、Ｃ１…貫通孔   DESCRIPTION OF SYMBOLS 1 ... Gas permeable member, 2 ... Gas permeable sheet, 2a ... Selective permeable sheet, 2b ... Non-selective permeable sheet, 3 ... Pressure valve, 4 ... Holding body, 4a ... Gas flow hole, 41a ... One gas flow hole (Hole for gas permeable sheet), 42a ... the other gas flow hole (hole for pressure valve), 5 ... sealed body, A1 ... breathable container, A ... container body, B ... body part, C ... container lid body, C1 ... through hole

Claims (4)

内部空間を有する容器本体に形成されて該容器本体の外側の空間と前記内部空間とを連通させる貫通孔に対し取付可能に構成され、
内部空間の気体を容器本体の外側の空間に透過可能な気体透過シートと、
気体が流通するための気体流通孔を有すると共に該気体流通孔内に気体透過シートを保持する保持体とを備える気体透過部材であって、
前記保持体は、前記内部空間の圧力が所定圧を上回った際に内部空間の気体を容器本体の外側の空間に放出可能な圧力弁を有することを特徴とする気体透過部材。 It is configured to be attachable to a through-hole formed in a container body having an internal space and communicating the space outside the container body with the internal space,
A gas permeable sheet capable of transmitting the gas in the internal space to the space outside the container body;
A gas permeable member having a gas flow hole for gas flow and a holding body for holding a gas permeable sheet in the gas flow hole,
The gas permeable member, wherein the holding body has a pressure valve capable of releasing the gas in the internal space to the space outside the container body when the pressure in the internal space exceeds a predetermined pressure. 前記気体透過シートは、複数の気体透過シートからなり、該複数の気体透過シートは、特定の気体を選択的に透過させる選択性透過シートと、特定の気体に対する選択性を有さない非選択性透過シートとを備え、
前記選択性透過シートの少なくとも一方の面側に、前記非選択性透過シートが重なるように配置されることを特徴とする請求項１に記載の気体透過部材。 The gas permeable sheet includes a plurality of gas permeable sheets, and the plurality of gas permeable sheets selectively transmit a specific gas and a non-selectivity that does not have selectivity for a specific gas. A transparent sheet,
The gas permeable member according to claim 1, wherein the non-selective permeable sheet is disposed so as to overlap at least one surface side of the selective permeable sheet. 前記圧力弁が気体流通孔内に設けられることを特徴とする請求項１又は２に記載の気体透過部材。   The gas permeable member according to claim 1, wherein the pressure valve is provided in the gas flow hole. 請求項１乃至３のいずれか一項に記載の気体透過部材と、該気体透過部材が取り付けられる貫通孔を有する容器本体と備えることを特徴とする通気性容器。   A breathable container comprising: the gas permeable member according to claim 1; and a container main body having a through hole to which the gas permeable member is attached.
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