JP4986961B2 - Ventilation member - Google Patents

Ventilation member Download PDF

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JP4986961B2
JP4986961B2 JP2008228967A JP2008228967A JP4986961B2 JP 4986961 B2 JP4986961 B2 JP 4986961B2 JP 2008228967 A JP2008228967 A JP 2008228967A JP 2008228967 A JP2008228967 A JP 2008228967A JP 4986961 B2 JP4986961 B2 JP 4986961B2
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metal body
hole
gas permeable
ventilation
ventilation member
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JP2010062094A (en
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陽三 矢野
和弘 大村
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Nitto Denko Corp
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0213—Venting apertures; Constructional details thereof
    • H05K5/0216—Venting plugs comprising semi-permeable membranes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/30—Ventilation or drainage of lighting devices

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  • Microelectronics & Electronic Packaging (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

本発明は、通気部材に関する。   The present invention relates to a ventilation member.

ランプ、モータ、センサ、スイッチ、ＥＣＵ等の自動車の電装部品を収容する筐体には、筐体の内部と外部との通気を確保することによって圧力変化に基づく不具合の発生を防止するとともに、筐体内部への異物の侵入を阻止するための通気部材が取り付けられている。そのような通気部材の一例が特許文献１に開示されている。特許文献１に開示された通気部材を図１０Ａおよび図１０Ｂに示す。   The housing that houses the electrical components of automobiles such as lamps, motors, sensors, switches, ECUs, etc. prevents the occurrence of problems due to pressure changes by ensuring ventilation between the inside and outside of the housing, and the housing. A ventilation member for preventing foreign substances from entering the body is attached. An example of such a ventilation member is disclosed in Patent Document 1. The ventilation member disclosed in Patent Document 1 is shown in FIGS. 10A and 10B.

通気部材６０は、通気膜６３と、通気膜６３が溶着された支持体６２と、支持体６２を覆うカバー６１とを備えている。支持体６２が熱可塑性エラストマーでできており、熱可塑性エラストマーの弾性を利用して通気部材６０が筐体５０のノズル５０ａに固定されている。この通気部材６０は、ワンタッチで筐体５０に取り付け可能であり、作業性に優れている。しかし、通気部材６０を筐体５０に取り付ける際に、支持体６２の弾性変形に伴って通気膜６３が変形する問題がある。   The ventilation member 60 includes a ventilation film 63, a support body 62 on which the ventilation film 63 is welded, and a cover 61 that covers the support body 62. The support body 62 is made of a thermoplastic elastomer, and the ventilation member 60 is fixed to the nozzle 50a of the housing 50 using the elasticity of the thermoplastic elastomer. The ventilation member 60 can be attached to the housing 50 with one touch, and is excellent in workability. However, when the ventilation member 60 is attached to the housing 50, there is a problem that the ventilation film 63 is deformed along with the elastic deformation of the support body 62.

また、近年の自動車は電子制御化が高度に進み、ＥＣＵなどの電装部品が車内だけでなくエンジンルームにも設置されるようになっている。そのため、通気部材に対する耐熱性や耐薬品性などの耐環境性の要求も以前より厳しいものとなっている。図１０Ａおよび図１０Ｂに示す通気部材６０によると、通気膜６３を支持体６２に溶着または接着する必要があるので、通気膜６３の材料と支持体６２の材料との相性を考慮することが不可欠である。つまり、支持体６２の材料選択の余地が狭く、このことが耐環境性の改善を妨げている。
特開２００１−１４３５２４号公報 In recent years, automobiles have become highly electronically controlled, and electrical components such as ECUs are installed not only in the car but also in the engine room. For this reason, the requirements for environmental resistance such as heat resistance and chemical resistance for the ventilation member are stricter than before. According to the ventilation member 60 shown in FIGS. 10A and 10B, the ventilation film 63 needs to be welded or bonded to the support body 62, so it is essential to consider the compatibility between the material of the ventilation film 63 and the material of the support body 62. It is. That is, the room for selecting the material of the support 62 is narrow, which prevents improvement in environmental resistance.
JP 2001-143524 A

上記事情に鑑み、本発明は、筐体等に取り付ける際に通気膜が変形しにくく、かつ耐薬品性などの耐環境性にも優れる通気部材を提供することを目的とする。   In view of the above circumstances, an object of the present invention is to provide a ventilation member in which a ventilation film is not easily deformed when attached to a housing or the like and is excellent in environmental resistance such as chemical resistance.

すなわち、本発明は、
中空の胴部と、前記胴部の一端に位置するとともに通気用の第１貫通孔が形成された平坦部とを有する第１金属体と、
前記第１貫通孔を前記胴部のある側から塞ぐように前記平坦部の上に配置された通気膜と、
前記通気膜の厚さ方向に関して前記第１金属体の前記第１貫通孔と重なっている第２貫通孔を有し、前記第１金属体の前記平坦部に前記通気膜を押し付けることによって前記通気膜と前記平坦部との隙間ならびに前記通気膜と自身との隙間が封じられ、かつ前記第１貫通孔、前記通気膜および前記第２貫通孔を通じた通気が可能となるように、前記第１金属体の前記胴部に圧入された第２金属体と、
を備えた、通気部材を提供する。 That is, the present invention
A first metal body having a hollow body part and a flat part located at one end of the body part and formed with a first through hole for ventilation;
A gas permeable membrane disposed on the flat portion so as to close the first through hole from the side of the body portion;
A second through hole overlapping the first through hole of the first metal body with respect to a thickness direction of the gas permeable film, and pressing the gas permeable film against the flat portion of the first metal body The first gap is sealed so that the gap between the membrane and the flat portion and the gap between the gas permeable membrane and itself are sealed, and air can be vented through the first through hole, the gas permeable membrane, and the second through hole. A second metal body press-fitted into the body of the metal body;
A ventilation member is provided.

上記本発明の通気部材によると、第１金属体と第２金属体との間に通気膜が保持される。従来の樹脂製の支持体に比べて各金属体の剛性が高いので、当該通気部材を筐体等に取り付ける際の通気膜の変形を防止できる。また、第１金属体と第２金属体との間に通気膜を挟むことによって隙間をシールするため、金属体と通気膜との溶着または接着が本質的に不要である。そのため、溶着または接着不良、経年劣化による剥離の問題を排除できる。また、従来の樹脂製の支持体に比べ、第１金属体および第２金属体が耐薬品性などの耐環境性に優れているので、本発明の通気部材は、エンジンルーム等の厳しい環境下での使用にも適している。   According to the ventilation member of the present invention, the ventilation film is held between the first metal body and the second metal body. Since the rigidity of each metal body is higher than that of a conventional resin support, it is possible to prevent the ventilation film from being deformed when the ventilation member is attached to a housing or the like. Further, since the gap is sealed by sandwiching the gas permeable film between the first metal body and the second metal body, welding or adhesion between the metal body and the gas permeable film is essentially unnecessary. Therefore, it is possible to eliminate the problem of peeling due to welding or adhesion failure and aging deterioration. In addition, since the first metal body and the second metal body are excellent in environmental resistance such as chemical resistance as compared with a conventional resin support, the ventilation member of the present invention is used in a severe environment such as an engine room. Also suitable for use in.

以下、添付の図面を参照しつつ本発明のいくつかの実施形態について説明する。   Hereinafter, some embodiments of the present invention will be described with reference to the accompanying drawings.

（第１実施形態）
図１および図２に示すように、本実施形態の通気部材１０は、第１金属体４、通気膜２および第２金属体６を備えている。第２金属体６が第１金属体４に圧入されることによって、第１金属体４と第２金属体６との間に通気膜２が保持されている。第１金属体４および第２金属体６は、通気膜２を支持するための支持体としての役割を果たす。 (First embodiment)
As shown in FIGS. 1 and 2, the ventilation member 10 of the present embodiment includes a first metal body 4, a ventilation film 2 and a second metal body 6. When the second metal body 6 is press-fitted into the first metal body 4, the gas permeable membrane 2 is held between the first metal body 4 and the second metal body 6. The first metal body 4 and the second metal body 6 serve as a support for supporting the gas permeable membrane 2.

第１金属体４は、中空の胴部４ｂと、胴部４ｂの一端に位置している平坦部４ａとを有する。胴部４ｂは円筒の形状を有し、第２金属体６の後方に十分な広さの空間ＳＨが形成される位置まで延びている。平坦部４ａの中央には、通気用の第１貫通孔４ｈが形成されている。   The 1st metal body 4 has the hollow trunk | drum 4b and the flat part 4a located in the end of the trunk | drum 4b. The trunk 4b has a cylindrical shape and extends to a position where a sufficiently large space SH is formed behind the second metal body 6. A first through hole 4h for ventilation is formed in the center of the flat portion 4a.

第２金属体６は、円板の形状を有する。第２金属体６の中央には、第２貫通孔６ｈが形成されている。第２金属体６によって通気膜２が第１金属体４の平坦部４ｈに押し付けられている。これにより、通気膜２と平坦部４ａとの隙間ならびに通気膜２と第２金属体６との隙間が封じられている。結果として、第１貫通孔４ｈ、通気膜２および第２貫通孔６ｈを通じた通気が可能になっている。   The second metal body 6 has a disc shape. A second through hole 6 h is formed at the center of the second metal body 6. The gas permeable membrane 2 is pressed against the flat portion 4 h of the first metal body 4 by the second metal body 6. Thereby, the clearance gap between the ventilation film 2 and the flat part 4a and the clearance gap between the ventilation film 2 and the 2nd metal body 6 are sealed. As a result, ventilation through the first through hole 4h, the gas permeable membrane 2 and the second through hole 6h is possible.

第２金属体６の外周部は、周方向の全域にわたって第１金属体４の胴部４ｂに接している。第１金属体４の胴部４ｂの内径と第２金属体６の外径とが一致している。そのため、面内で均一な保持力を通気膜２に付与できる。本実施形態では、第２貫通孔６ｈの直径Ｄ2と第１貫通孔４ｈの直径Ｄ1とが等しく、第１貫通孔４ｈ、第２貫通孔６ｈおよび通気膜２の各中心が同一の軸Ｏ上にある。ただし、直径Ｄ2と直径Ｄ1とが相違していてもよいし、第１貫通孔４ｈ、第２貫通孔６ｈおよび通気膜２が同軸に並んでいなくてもよい。 The outer peripheral portion of the second metal body 6 is in contact with the body portion 4b of the first metal body 4 over the entire circumferential direction. The inner diameter of the body portion 4 b of the first metal body 4 and the outer diameter of the second metal body 6 are the same. Therefore, a uniform holding force can be imparted to the gas permeable membrane 2 in the plane. In the present embodiment, equal to the diameter D 2 of the second through-hole 6h and the diameter D 1 of the first through-hole 4h is, the first through hole 4h, the second through hole 6h and the centers the same axis of the breathable film 2 O is on. However, the diameter D 2 may be different from the diameter D 1, and the first through hole 4h, the second through hole 6h, and the gas permeable membrane 2 may not be arranged coaxially.

本発明では、通気膜２が第１金属体４および／または第２金属体６に接着または溶着されている必要はない。ただし、仮留めの必要性がある場合には、通気膜２の外周部が第１金属体４または第２金属体６に接着されていてもよい。   In the present invention, the gas permeable membrane 2 does not need to be bonded or welded to the first metal body 4 and / or the second metal body 6. However, when there is a need for temporary fastening, the outer peripheral portion of the gas permeable membrane 2 may be bonded to the first metal body 4 or the second metal body 6.

第１金属体４および第２金属体６の材料として、ステンレス、鋳鉄、炭素鋼、アルミニウムなどの汎用の金属を用いることができる。酸化を防止するために表面処理がなされた材料や酸化しにくい材料を用いることが望ましい。プレス加工、切削加工、絞り加工、ダイキャストなどの一般的な加工・成形方法によって各金属体を作製できる。通気膜２が金属体４，６から損傷を受けるのを防ぐために、図３に示すように、金属体４，６の貫通孔４ｈ，６ｈの開口縁に面取りやフィレット４ｆ，６ｆが形成されていてもよい。   As the material of the first metal body 4 and the second metal body 6, general-purpose metals such as stainless steel, cast iron, carbon steel, and aluminum can be used. It is desirable to use a material that has been surface-treated or a material that is difficult to oxidize in order to prevent oxidation. Each metal body can be produced by a general processing / forming method such as pressing, cutting, drawing, and die casting. In order to prevent the gas permeable membrane 2 from being damaged from the metal bodies 4 and 6, as shown in FIG. 3, chamfers and fillets 4f and 6f are formed at the opening edges of the through holes 4h and 6h of the metal bodies 4 and 6. May be.

通気膜２は、第１貫通孔４ｈを胴部４ｂのある側（第１金属体４の内側）から塞ぐように平坦部４ａの上に配置されている。通気膜２によって、第１金属体４の貫通孔４ｈと第２金属体６の貫通孔６ｈとが隔てられている。本実施形態では、通気膜２の外径と第２金属体６の外径とが一致している。そのため、第１金属体４に対する通気膜２の位置決めが簡単であるとともに、第２金属体６を第１金属体４に圧入する際に通気膜２が動いたり捩れたりしにくい。   The gas permeable membrane 2 is disposed on the flat portion 4a so as to close the first through hole 4h from the side where the body portion 4b is located (inside the first metal body 4). The ventilation film 2 separates the through hole 4 h of the first metal body 4 from the through hole 6 h of the second metal body 6. In the present embodiment, the outer diameter of the gas permeable membrane 2 and the outer diameter of the second metal body 6 are the same. Therefore, the positioning of the gas permeable membrane 2 with respect to the first metal body 4 is simple, and the gas permeable membrane 2 is unlikely to move or twist when the second metal body 6 is press-fitted into the first metal body 4.

通気膜２は、気体の透過を許容し、液体の透過を阻止する性質を有するものであればよく、その構造や材料は特に限定されない。図４に示すように、本実施形態では、通気膜２は、膜本体２ａと、膜本体２ａに重ね合わされた補強材２ｂとを有する。補強材２ｂを設けることにより、通気膜２の強度が向上する。   The gas permeable membrane 2 is not particularly limited as long as it has a property of allowing gas permeation and preventing liquid permeation. As shown in FIG. 4, in the present embodiment, the gas permeable membrane 2 includes a membrane body 2 a and a reinforcing material 2 b superimposed on the membrane body 2 a. By providing the reinforcing material 2b, the strength of the gas permeable membrane 2 is improved.

膜本体２ａには、撥油処理や撥水処理が施されていてもよい。これらの撥液処理は、表面張力の小さい物質を膜本体２ａに塗布し、乾燥後、キュアすることにより行える。撥液処理に用いる撥液剤は、膜本体２ａよりも低い表面張力の皮膜を形成できるものであればよく、例えば、パーフルオロアルキル基を有する高分子を含む撥液剤が好適である。撥液剤は、含浸、スプレー等の公知の方法で膜本体２ａに塗布される。   The film body 2a may be subjected to oil repellent treatment or water repellent treatment. These liquid repellent treatments can be performed by applying a substance having a small surface tension to the film body 2a, and curing after drying. The liquid repellent used for the liquid repellent treatment is not particularly limited as long as it can form a film having a surface tension lower than that of the film body 2a. For example, a liquid repellent containing a polymer having a perfluoroalkyl group is suitable. The liquid repellent is applied to the film body 2a by a known method such as impregnation or spraying.

膜本体２ａの典型例は、フッ素樹脂またはポリオレフィンでできた多孔質膜である。十分な防水性を確保する観点から、０．０１〜１０μｍの平均孔径を有する樹脂多孔質膜を膜本体２ａに用いるのがよい。   A typical example of the membrane body 2a is a porous membrane made of fluororesin or polyolefin. From the viewpoint of ensuring sufficient waterproofness, a resin porous membrane having an average pore diameter of 0.01 to 10 μm is preferably used for the membrane body 2a.

膜本体２ａに好適なフッ素樹脂として、ポリテトラフルオロエチレン（ＰＴＦＥ）、ポリクロロトリフルオロエチレン、テトラフルオロエチレン−ヘキサフルオロプロピレン共重合体、テトラフルオロエチレン−エチレン共重合体が挙げられる。膜本体２ａに好適なポリオレフィンとして、エチレン、プロピレン、４−メチルペンテン−１，１ブテンなどのモノマーの重合体または共重合体が挙げられる。ポリアクリロニトリル、ナイロン、ポリ乳酸を用いたナノファイバーフィルム多孔体を用いてもよい。中でも、小面積で高い通気性が確保でき、筐体の内部への異物の侵入を阻止する能力にも優れているＰＴＦＥが好ましい。ＰＴＦＥ多孔質膜は、延伸法や抽出法等の公知の成形方法によって製造できる。   Examples of the fluororesin suitable for the membrane body 2a include polytetrafluoroethylene (PTFE), polychlorotrifluoroethylene, tetrafluoroethylene-hexafluoropropylene copolymer, and tetrafluoroethylene-ethylene copolymer. Examples of suitable polyolefin for the membrane body 2a include polymers or copolymers of monomers such as ethylene, propylene, 4-methylpentene-1,1butene. A nanofiber film porous body using polyacrylonitrile, nylon, or polylactic acid may be used. Among them, PTFE is preferable because it has a small area and can ensure high air permeability and is excellent in ability to prevent foreign matter from entering the inside of the housing. The PTFE porous membrane can be produced by a known molding method such as a stretching method or an extraction method.

補強材２ｂは、ポリエステル、ポリエチレン、アラミドなどの樹脂で作られた部材でありうる。補強材２ｂの形態は、通気膜２の通気性を維持できるものであれば特に限定されず、例えば、織布、不織布、ネット、メッシュ、スポンジ、フォームまたは多孔体である。膜本体２ａと補強材２ｂとは、熱ラミネーション、熱溶着、超音波溶着または接着剤によって貼り合わされているとよい。   The reinforcing material 2b can be a member made of a resin such as polyester, polyethylene, or aramid. The form of the reinforcing material 2b is not particularly limited as long as the air permeability of the gas permeable membrane 2 can be maintained, and is, for example, a woven fabric, a nonwoven fabric, a net, a mesh, a sponge, a foam, or a porous body. The membrane body 2a and the reinforcing material 2b are preferably bonded together by thermal lamination, thermal welding, ultrasonic welding, or an adhesive.

通気膜２の厚さは、強度やハンドリングの容易性を考慮して、１μｍ〜５ｍｍの範囲にあるとよい。通気膜２の通気度は、ＪＩＳ Ｐ ８１１７に規定されたガーレー試験機法で得られるガーレー値にて０．１〜３００ｓｅｃ／１００ｃｍ3の範囲にあるとよい。通気膜２の耐水圧は、１．０ｋＰａ以上あるとよい。 The thickness of the gas permeable membrane 2 is preferably in a range of 1 μm to 5 mm in consideration of strength and ease of handling. The air permeability of the gas permeable membrane 2 is preferably in the range of 0.1 to 300 sec / 100 cm 3 as a Gurley value obtained by the Gurley tester method specified in JIS P 8117. The water pressure resistance of the gas permeable membrane 2 is preferably 1.0 kPa or more.

（第２実施形態）
図５に示すように、本実施形態の通気部材２０は、第１金属体１４、通気膜２、第２金属体６およびゴム製部品１６を有する。通気膜２および第２金属体６は、第１実施形態で説明したものと共通である。第１金属体１４に第２金属体６を圧入することによって、第１金属体１４と第２金属体６との間に通気膜２が保持されている。 (Second Embodiment)
As shown in FIG. 5, the ventilation member 20 of the present embodiment includes a first metal body 14, a ventilation film 2, a second metal body 6, and a rubber part 16. The gas permeable membrane 2 and the second metal body 6 are the same as those described in the first embodiment. The air-permeable film 2 is held between the first metal body 14 and the second metal body 6 by press-fitting the second metal body 6 into the first metal body 14.

ゴム製部品１６は、筐体等の要通気物品に設けられた通気用のノズルを挿入可能な第３貫通孔１６ｈを有する部品であり、第３貫通孔１６ｈが第２金属体６の第２貫通孔６ｈと連通するように、第１金属体１４の胴部１４ｂと第２金属体６とに囲まれた空間ＳＨ（図２参照）に配置されている。図６に示すように、ゴム製部品１６を設けることによって、当該通気部材２０を筐体１８にワンタッチで取り付け可能となる。ゴム製部品１６が第１金属体１４に拘束されて外側に殆ど膨らまないので、筐体１８への通気部材２０の取り付け強度は良好である。   The rubber part 16 is a part having a third through hole 16h into which a ventilation nozzle provided in a ventilation-requiring article such as a housing can be inserted. The third through hole 16h is a second part of the second metal body 6. It arrange | positions in space SH (refer FIG. 2) enclosed by the trunk | drum 14b of the 1st metal body 14, and the 2nd metal body 6 so that it may communicate with the through-hole 6h. As shown in FIG. 6, by providing the rubber part 16, the ventilation member 20 can be attached to the housing 18 with one touch. Since the rubber component 16 is restrained by the first metal body 14 and hardly bulges outward, the attachment strength of the ventilation member 20 to the housing 18 is good.

具体的に、ゴム製部品１６は円筒の形状を有する。ゴム製部品１６の外径が第１金属体１４の胴部１４ｂの内径よりも若干大きいか等しい。すなわち、弾性変形することによってゴム製部品１６が胴部１４ｂに固定されていてもよいし、弾性変形することなくゴム製部品１６が第１金属体１４の胴部１４ｂにぴったり収まっていてもよい。   Specifically, the rubber part 16 has a cylindrical shape. The outer diameter of the rubber component 16 is slightly larger than or equal to the inner diameter of the body portion 14b of the first metal body 14. That is, the rubber part 16 may be fixed to the body part 14b by elastically deforming, or the rubber part 16 may be exactly fit in the body part 14b of the first metal body 14 without elastically deforming. .

ゴム製部品１６の第３貫通孔１６ｈの直径Ｄ3は、第２金属体６の第２貫通孔６ｈの直径Ｄ2よりも大きい。そのため、第２金属体６の一部がゴム製部品１６の第３貫通孔１６ｈ内に露出している。このような構成によると、図６に示すように、筐体１８に設けられた通気用のノズル１８１を第３貫通孔１６ｈに挿入したとき、ノズル１８１の先端が第２金属体６に突き当たる。第２金属体６がストッパとして機能するので、ノズル１８１の挿入深さを調節する必要がなく、筐体１８への通気部材２０の取り付け作業が容易である。第２金属体６が十分な剛性を有するので、ノズル１８１を多少強く押し込んでも通気膜２に過剰な力が加わりにくいという利点もある。 The diameter D 3 of the third through hole 16 h of the rubber part 16 is larger than the diameter D 2 of the second through hole 6 h of the second metal body 6. Therefore, a part of the second metal body 6 is exposed in the third through hole 16 h of the rubber part 16. According to such a configuration, as shown in FIG. 6, when the ventilation nozzle 181 provided in the housing 18 is inserted into the third through hole 16 h, the tip of the nozzle 181 hits the second metal body 6. Since the second metal body 6 functions as a stopper, there is no need to adjust the insertion depth of the nozzle 181 and the work of attaching the ventilation member 20 to the housing 18 is easy. Since the second metal body 6 has sufficient rigidity, there is an advantage that it is difficult to apply an excessive force to the gas permeable membrane 2 even if the nozzle 181 is pushed in somewhat strongly.

本実施形態において、ゴム製部品１６は、第１金属体１４および第２金属体６に包囲されている。そのため、劣化を促進する薬品や油脂類がゴム製部品１６に触れにくい。また、ゴム製部品１６が第１金属体１４に拘束されているので、通気部材２０を筐体１８のノズル１８１に取り付ける際、径方向へのゴム製部品１６の弾性変形が妨げられる。そのため、ゴム製部品１６の筐体１８への取り付け強度が向上する。   In the present embodiment, the rubber part 16 is surrounded by the first metal body 14 and the second metal body 6. Therefore, chemicals and oils and fats that promote deterioration are difficult to touch the rubber part 16. Further, since the rubber part 16 is restrained by the first metal body 14, when the ventilation member 20 is attached to the nozzle 181 of the housing 18, elastic deformation of the rubber part 16 in the radial direction is prevented. Therefore, the attachment strength of the rubber component 16 to the housing 18 is improved.

ゴム製部品１６の材料に特に限定はないが、耐熱性を重視するならば熱硬化性エラストマーの使用が推奨される。具体的には、ニトリルゴム（ＮＢＲ）、エチレン−プロピレンゴム（ＥＰＤＭ）、シリコーンゴム、フッ素ゴム、アクリルゴム、水素化ニトリルゴムを使用できる。耐熱性と同時に耐寒性も求められる場合には、ＥＰＤＭやシリコーンゴムを使用するとよい。ゴム製部品１６は、発泡体であってもよい。   The material of the rubber part 16 is not particularly limited, but if heat resistance is important, use of a thermosetting elastomer is recommended. Specifically, nitrile rubber (NBR), ethylene-propylene rubber (EPDM), silicone rubber, fluorine rubber, acrylic rubber, and hydrogenated nitrile rubber can be used. When heat resistance and cold resistance are also required, EPDM or silicone rubber may be used. The rubber part 16 may be a foam.

本実施形態によると、ゴム製部品１６と通気膜２とが第２金属体６によって隔てられており、通気膜２とゴム製部品１６とは接していない。そのため、通気膜２とゴム製部品１６との相性（溶着性または接着性）を考慮する必要がなく、ゴム製部品１６の材料選択の余地が大きい。つまり、通気膜２との溶着性や接着性はよくないが、耐熱性や耐薬品性に優れたエラストマーをゴム製部品１６に好適に使用できる。   According to this embodiment, the rubber component 16 and the gas permeable membrane 2 are separated by the second metal body 6, and the gas permeable membrane 2 and the rubber component 16 are not in contact with each other. Therefore, it is not necessary to consider the compatibility (weldability or adhesiveness) between the gas permeable membrane 2 and the rubber part 16, and there is a large room for selecting a material for the rubber part 16. That is, although the weldability and adhesiveness with the gas permeable membrane 2 are not good, an elastomer having excellent heat resistance and chemical resistance can be suitably used for the rubber part 16.

第１金属体１４の胴部１４ｂは、平坦部４ａが位置している側とは反対側において、ゴム製部品１６の空間ＳＨ（図２参照）からの離脱を妨げているかしめ部１４ｃを含む。かしめ部１４ｃは、平坦部４ａがある側とは反対側における胴部１４ｂの端を内側に塑性変形させることによって形成された部分である。典型的には、胴部１４ｂの端を内向きに曲げ加工することによってかしめ部１４ｃを形成しうる。かしめ部１４ｃは、胴部１４ｂの周方向の全域に形成されていてもよいし、胴部１４ｂの周方向の一部にのみ形成されていてもよい。   The body portion 14b of the first metal body 14 includes a caulking portion 14c that prevents the rubber component 16 from being detached from the space SH (see FIG. 2) on the side opposite to the side where the flat portion 4a is located. . The caulking portion 14c is a portion formed by plastically deforming the end of the body portion 14b on the side opposite to the side where the flat portion 4a is present. Typically, the caulking portion 14c can be formed by bending the end of the body portion 14b inward. The caulking portion 14c may be formed in the entire circumferential direction of the trunk portion 14b, or may be formed only in a part of the circumferential direction of the trunk portion 14b.

なお、かしめ部１４ｃを省略することも可能である。すなわち、第１実施形態の通気部材１０にゴム製部品１６を追加した構成も採用しうる。ゴム製部品１６が十分に縮んだ状態で第１金属体１４に収容されているのであれば、ゴム製部品１６が空間ＳＨ（図２）から離脱する可能性も低い。また、かしめ部１４ｃを形成した後で、第１金属体１４の胴部１４ｂへの樹脂充填によりゴム製部品１６を形成してもよい。   It is also possible to omit the caulking portion 14c. That is, a configuration in which the rubber component 16 is added to the ventilation member 10 of the first embodiment can be employed. If the rubber component 16 is accommodated in the first metal body 14 in a sufficiently contracted state, the rubber component 16 is less likely to be detached from the space SH (FIG. 2). Alternatively, after forming the caulking portion 14c, the rubber part 16 may be formed by filling the body portion 14b of the first metal body 14 with resin.

（第３実施形態）
図７および図８に示すように、本実施形態の通気部材３０は、第１金属体２４、通気膜２および第２金属体６を有する。第１金属体２４は、筐体の一部（例えば上部）を構成する部品である。第１金属体２４は、通気用の第１貫通孔２４ｈが形成された平坦部２４ａと、第１貫通孔２４ｈの周囲に設けられた胴部２４ｂとを有している。第２金属体６を第１金属体２４の胴部２４ｂに圧入することによって、第１金属体２４と第２金属体６との間に通気膜２が保持されている。この点は、先行する実施形態と共通である。 (Third embodiment)
As shown in FIGS. 7 and 8, the ventilation member 30 of the present embodiment includes a first metal body 24, a gas permeable membrane 2, and a second metal body 6. The first metal body 24 is a component that constitutes a part (for example, the upper part) of the housing. The first metal body 24 has a flat portion 24a in which a first through hole 24h for ventilation is formed and a body portion 24b provided around the first through hole 24h. The air-permeable membrane 2 is held between the first metal body 24 and the second metal body 6 by press-fitting the second metal body 6 into the body portion 24 b of the first metal body 24. This point is common to the preceding embodiments.

本実施形態によると、筐体を構成する第１金属体２４に通気膜２を直接固定できる点で有効である。特に、筐体を構成する部品が金属製の場合には、接着や溶着が難しいため、本実施形態の構成が有効である。また、平坦部２４ａの表面からの胴部２４ｂの突出高さを大幅に抑えることができるという利点がある。   This embodiment is effective in that the gas permeable membrane 2 can be directly fixed to the first metal body 24 constituting the housing. In particular, when the parts constituting the casing are made of metal, adhesion and welding are difficult, and therefore the configuration of this embodiment is effective. Moreover, there exists an advantage that the protrusion height of the trunk | drum 24b from the surface of the flat part 24a can be suppressed significantly.

また、図９に示すように、平坦部２４ａが位置している側とは反対側における胴部２４ｂの端が、第２金属体６の外周部を平坦部２４ａに向かって押すように塑性変形しているかしめ部２４ｃを形成していてもよい。このようにすれば、熱膨張や振動の影響で第２金属体６の圧入が緩んで第２金属体６が胴部２４ｂから抜け落ちるのを完全に防止できる。   Further, as shown in FIG. 9, plastic deformation is performed so that the end of the body portion 24b on the side opposite to the side where the flat portion 24a is located pushes the outer peripheral portion of the second metal body 6 toward the flat portion 24a. The caulking portion 24c may be formed. In this way, it is possible to completely prevent the press-in of the second metal body 6 from being loosened due to the effects of thermal expansion and vibration and the second metal body 6 from falling off the body portion 24b.

本発明の第１実施形態にかかる通気部材の分解斜視図The disassembled perspective view of the ventilation member concerning 1st Embodiment of this invention. 図１に示す通気部材の断面斜視図Cross-sectional perspective view of the ventilation member shown in FIG. 図１に示す通気部材の部分拡大断面図Partial enlarged sectional view of the ventilation member shown in FIG. 通気膜の断面図Cross section of the ventilation membrane 本発明の第２実施形態にかかる通気部材の断面斜視図Sectional perspective view of the ventilation member concerning 2nd Embodiment of this invention. 図５に示す通気部材の使用状態図FIG. 5 shows a state of use of the ventilation member shown in FIG. 本発明の第３実施形態にかかる通気部材の分解斜視図The disassembled perspective view of the ventilation member concerning 3rd Embodiment of this invention. 図７に示す通気部材の断面図Sectional drawing of the ventilation member shown in FIG. 図７に示す通気部材の変形例の断面図Sectional drawing of the modification of the ventilation member shown in FIG. 従来の通気部材の分解斜視図An exploded perspective view of a conventional ventilation member 従来の通気部材の断面図Sectional view of a conventional ventilation member

符号の説明Explanation of symbols

２ 通気膜
４，１４，２４ 第１金属体
４ａ，２４ａ 平坦部
４ｂ，１４ｂ，２４ｂ 胴部
４ｈ，２４ｈ 第１貫通孔
６ 第２金属体
６ｈ 第２貫通孔
１０，２０，３０，４０ 通気部材
１４ｃ，２４ｃ かしめ部
１６ ゴム製部品
１６ｈ 第３貫通孔
１８ 筐体
１８１ ノズル 2 Ventilation films 4, 14, 24 First metal bodies 4a, 24a Flat portions 4b, 14b, 24b Body portions 4h, 24h First through hole 6 Second metal body 6h Second through holes 10, 20, 30, 40 Ventilation member 14c, 24c Caulking portion 16 Rubber part 16h Third through hole 18 Housing 181 Nozzle

Claims (6)

中空の胴部と、前記胴部の一端に位置するとともに通気用の第１貫通孔が形成された平坦部とを有する第１金属体と、
前記第１貫通孔を前記胴部のある側から塞ぐように前記平坦部の上に配置された通気膜と、
前記通気膜によって前記第１金属体の前記第１貫通孔と隔てられた第２貫通孔を有し、前記第１金属体の前記平坦部に前記通気膜を押し付けることによって前記通気膜と前記平坦部との隙間ならびに前記通気膜と自身との隙間が封じられ、かつ前記第１貫通孔、前記通気膜および前記第２貫通孔を通じた通気が可能となるように、前記第１金属体の前記胴部に圧入された第２金属体と、
を備えた、通気部材。 A first metal body having a hollow body part and a flat part located at one end of the body part and formed with a first through hole for ventilation;
A gas permeable membrane disposed on the flat portion so as to close the first through hole from the side of the body portion;
A second through hole separated from the first through hole of the first metal body by the gas permeable film, and pressing the gas permeable film against the flat portion of the first metal body to form the gas permeable film and the flat The first metal body of the first metal body so that a gap between the first metal body and the gas permeable membrane and the gas permeable membrane is sealed and air can be vented through the first through hole, the gas permeable membrane, and the second through hole. A second metal body press-fitted into the body,
A ventilation member comprising: 前記第１金属体の前記胴部が円筒の形状を有し、
前記第２金属体が円板の形状を有し、
前記第２金属体の外周部が周方向の全域にわたって前記第１金属体の前記胴部に接している、請求項１に記載の通気部材。 The body of the first metal body has a cylindrical shape;
The second metal body has a disk shape;
2. The ventilation member according to claim 1, wherein an outer peripheral portion of the second metal body is in contact with the body portion of the first metal body over an entire circumferential direction. 筐体等の要通気物品に設けられた通気用のノズルを挿入可能な第３貫通孔を有し、前記第３貫通孔が前記第２金属体の前記第２貫通孔と連通するように前記第１金属体の前記胴部と前記第２金属体とに囲まれた空間に配置されたゴム製部品をさらに備えた、請求項１または請求項２に記載の通気部材。   A third through hole into which a ventilation nozzle provided in an article requiring ventilation such as a housing can be inserted, and the third through hole communicates with the second through hole of the second metal body. The ventilation member according to claim 1 or 2, further comprising a rubber part disposed in a space surrounded by the body portion of the first metal body and the second metal body. 前記ゴム製部品の前記第３貫通孔の直径が前記第２金属体の前記第２貫通孔の直径よりも大きい、請求項３に記載の通気部材。   The ventilation member according to claim 3, wherein a diameter of the third through hole of the rubber component is larger than a diameter of the second through hole of the second metal body. 前記第１金属体の前記胴部は、前記平坦部が位置している側とは反対側において、前記ゴム製部品の前記空間からの離脱を妨げているかしめ部を含む、請求項３または請求項４に記載の通気部材。   The body portion of the first metal body includes a caulking portion that prevents the rubber part from being detached from the space on a side opposite to a side where the flat portion is located. Item 5. The ventilation member according to Item 4. 前記平坦部が位置している側とは反対側における前記胴部の端が、前記第２金属体の外周部を前記平坦部に向かって押すように塑性変形しているかしめ部を形成している、請求項１または請求項２に記載の通気部材。   An end of the body portion on the side opposite to the side where the flat portion is located forms a caulking portion that is plastically deformed so as to push the outer peripheral portion of the second metal body toward the flat portion. The ventilation member according to claim 1 or 2.
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KR101837218B1 (en) 2010-05-13 2018-03-09 더블유.엘. 고어 앤드 어소시에이트스, 인코포레이티드 Improved vent installation method

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JP4953663B2 (en) * 2006-03-02 2012-06-13 日東電工株式会社 Ventilation member and ventilation structure

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101837218B1 (en) 2010-05-13 2018-03-09 더블유.엘. 고어 앤드 어소시에이트스, 인코포레이티드 Improved vent installation method

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