JP5563245B2 - Vent plug and inspection method of vent plug - Google Patents
Vent plug and inspection method of vent plug Download PDFInfo
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- JP5563245B2 JP5563245B2 JP2009140889A JP2009140889A JP5563245B2 JP 5563245 B2 JP5563245 B2 JP 5563245B2 JP 2009140889 A JP2009140889 A JP 2009140889A JP 2009140889 A JP2009140889 A JP 2009140889A JP 5563245 B2 JP5563245 B2 JP 5563245B2
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- vent plug
- permeable membrane
- gas permeable
- vent
- cylindrical member
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- 238000007689 inspection Methods 0.000 title claims description 5
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- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000005080 phosphorescent agent Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000005871 repellent Substances 0.000 description 9
- 238000009423 ventilation Methods 0.000 description 8
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 7
- 230000002940 repellent Effects 0.000 description 7
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- 239000004094 surface-active agent Substances 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
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- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
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- 229910052782 aluminium Inorganic materials 0.000 description 1
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- 239000007850 fluorescent dye Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
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- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
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- 229920001778 nylon Polymers 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
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- 229920003031 santoprene Polymers 0.000 description 1
- 239000013514 silicone foam Substances 0.000 description 1
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- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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- 239000002759 woven fabric Substances 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/16—Closures not otherwise provided for with means for venting air or gas
- B65D51/1605—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior
- B65D51/1616—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior by means of a filter
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Examining Or Testing Airtightness (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Description
本発明は、気体を通過させつつも水滴や油滴のような液体を遮断する機能を有する通気膜を備えた通気栓及び通気栓の検査方法に関するものである。 The present invention relates to a vent plug provided with a vent film having a function of blocking liquid such as water droplets and oil droplets while allowing gas to pass through, and a method for inspecting the vent plug.
自動車のヘッドランプ、リアランプ、フォグランプ、パワーウィンドー、圧力センサー、圧力スイッチ、エンジンコントロールユニット等の電気装置は、水や油、界面活性剤等の液体に曝される環境下で使用されるものである。また一般家電製品の中でも、電気カミソリ、携帯電話、電動歯ブラシ等、水や油、界面活性剤等の液体に曝される環境下で使用されるものがある。これらの電気装置では、内部に電子部品を収納するケースの防滴性を高くする必要があるが、全くの密閉状態にしてしまうと、温度変化によってケース内部の気体が膨張・収縮する際に、ケース内外に圧力差が発生し、ケースに過大な負荷がかかってしまう。従って上記ケースは、液体の侵入を防止しつつも、気体は出入り可能な状態にしておく必要がある。 Electrical devices such as automotive headlamps, rear lamps, fog lamps, power windows, pressure sensors, pressure switches, and engine control units are used in environments exposed to liquids such as water, oil, and surfactants. is there. Moreover, among general household electrical appliances, there are those used in environments exposed to liquids such as water, oil, and surfactants such as electric razors, mobile phones, and electric toothbrushes. In these electric devices, it is necessary to increase the drip-proof property of the case containing the electronic components inside, but if it is completely sealed, the gas inside the case expands and contracts due to temperature change, A pressure difference occurs inside and outside the case, and an excessive load is applied to the case. Therefore, the case needs to be in a state where gas can enter and exit while preventing liquid from entering.
特許文献１〜３には、筒状の部材の一端部に防滴性の通気膜を形成することにより、水滴等の液体の侵入を防止しつつも、気体の出入りを可能とする通気栓が記載されている。また、当該通気栓がモーターケース等の電気装置類に好適に使用されることが記載されている。 In Patent Documents 1 to 3, there is a vent plug that allows gas to enter and exit while preventing intrusion of liquid such as water droplets by forming a drip-proof vent film at one end of a cylindrical member. Have been described. Further, it is described that the vent plug is suitably used for electric devices such as a motor case.
上記従来の通気栓を使用した場合、通気栓の取り扱い時、例えば、通気栓をモーターケースに装着する際に、作業者の手指や取り付け装置等（以下、「手指等」という）が通気膜に接触して破損することがあった。斯かる状況のもと、本出願人はこれまでに、手指等が通気膜に直接接触しにくくするための構造を検討してきた。 When the conventional vent plug is used, when the vent plug is handled, for example, when the vent plug is mounted on the motor case, the operator's fingers and attachment devices (hereinafter referred to as “finger fingers”) are used as the vent membrane. There was a case where it was damaged by contact. Under such circumstances, the applicant has so far studied a structure for making it difficult for fingers and the like to come into direct contact with the gas permeable membrane.
例えば、図１３の断面図に示すように、通気膜２を筒状部材１の端面に形成するのではなく、筒状部材１の端部から少し内部寄りの位置において筒状部材１内に通気膜２を挟み込む構造を検討してきた。このような構成により、筒状部材１の端部は、通気膜２を含む平面よりも上方に突出する構造となるため、筒状部材１の端面が手指等に対する防護堤として機能し、通気膜２に手指等が直接接触してしまう確率を低減させることができる。 For example, as shown in the cross-sectional view of FIG. 13, the ventilation film 2 is not formed on the end surface of the cylindrical member 1, but is vented into the cylindrical member 1 at a position slightly inward from the end of the cylindrical member 1. A structure for sandwiching the film 2 has been studied. With such a configuration, the end portion of the cylindrical member 1 has a structure that protrudes upward from the plane including the gas permeable membrane 2, so that the end surface of the cylindrical member 1 functions as a protective bank against fingers and the like. The probability that a finger etc. will contact 2 directly can be reduced.
しかしながら、この方法では、筒状部材１の内部に通気膜２が適切な位置に挟み込まれているかどうかは、通気栓の外部からは検査することはできなかった。例えば、図１４に示すように、通気膜２の端部が皺になっていても、図１６の外観図に示すように外部からこれを容易に判別することはできない。また、図１５に示すように、通気膜２の中心位置が筒状部材１の中心位置から大きくずれて形成された場合も同様であり、外部からこれを容易に判別することはできない。 However, according to this method, it has not been possible to inspect from the outside of the vent plug whether the gas permeable membrane 2 is sandwiched at an appropriate position inside the cylindrical member 1. For example, as shown in FIG. 14, even if the end portion of the gas permeable membrane 2 is wrinkled, it cannot be easily distinguished from the outside as shown in the external view of FIG. Further, as shown in FIG. 15, the same applies to the case where the center position of the gas permeable membrane 2 is largely deviated from the center position of the tubular member 1, and this cannot be easily determined from the outside.
図１４や図１５のように通気膜２の保持が不均一である場合、或いは不完全である場合、手指等、或いは風圧等の影響により、通気膜２が筒状部材１から外れてしまい、そこから水滴等が漏れ出てしまう可能性がある。そこで本発明は、筒状部材１の内部に通気膜２が適切に挟み込まれているかどうかを外観の観察によって容易に識別できる通気栓を提供することを目的とするものである。 When the holding of the gas permeable membrane 2 is not uniform or incomplete as shown in FIGS. 14 and 15, the gas permeable membrane 2 is detached from the tubular member 1 due to the influence of fingers, wind pressure, etc. There is a possibility that water droplets or the like leak from there. Therefore, an object of the present invention is to provide a vent plug that can easily identify whether or not the gas permeable membrane 2 is properly sandwiched inside the cylindrical member 1 by observing the appearance.
上記目的を達成し得た本発明の通気栓は、
貫通孔を有する筒状部材と、前記貫通孔を横断する通気膜とを備えた通気栓であって、前記通気膜の周縁部は前記筒状部材により挟持され、前記筒状部材の側面には前記通気膜の周縁端部を視認できる開口部が形成されているものである。
The vent plug of the present invention capable of achieving the above-mentioned object is
A vent plug comprising a tubular member having a through hole and a gas permeable membrane crossing the through hole, wherein a peripheral portion of the gas permeable membrane is sandwiched between the cylindrical members, and on the side surface of the cylindrical member The opening part which can visually recognize the peripheral edge part of the said air permeable membrane is formed.
上記通気栓において、下記（１）〜（３）の条件のうち、少なくとも１つを満足することが推奨される。
前記筒状部材と前記通気膜の色相は、色相の尺度である色相環の全周を３６０°とした場合に、互いに１５°以上離れている。 （１）
前記筒状部材と前記通気膜は、明度が１度以上異なる。 （２）
前記筒状部材と前記通気膜は、彩度が２度以上異なる。 （３）
In the vent plug, it is recommended that at least one of the following conditions (1) to (3) is satisfied.
The hues of the tubular member and the gas permeable membrane are separated from each other by 15 ° or more when the entire circumference of the hue ring, which is a measure of hue, is 360 °. (1)
The tubular member and the gas permeable membrane differ in brightness by 1 degree or more. (2)
The cylindrical member and the gas permeable membrane differ in saturation by 2 degrees or more. (3)
上記通気栓において、前記開口部が前記筒状部材側面の全周にわたり形成されていてもよい。 In the vent plug, the opening may be formed over the entire circumference of the cylindrical member side surface.
上記通気栓において、前記通気膜および／または前記筒状部材が、蓄光剤、蛍光剤、光反射材のいずれか１種以上を含有していることが望ましい。 In the vent plug, it is preferable that the gas permeable membrane and / or the cylindrical member contain one or more of a phosphorescent agent, a fluorescent agent, and a light reflecting material.
上記通気栓において、前記筒状部材は、前記通気膜の周縁部を挟持する面に凹凸形状を有していることが望ましい。 In the vent plug, it is preferable that the cylindrical member has a concavo-convex shape on a surface sandwiching a peripheral edge portion of the vent film.
上記通気栓において、前記筒状部材の側面には、前記開口部を挟んで少なくとも２つの環状の凸部が形成されていることが望ましい。 In the vent plug, it is preferable that at least two annular convex portions are formed on a side surface of the cylindrical member with the opening interposed therebetween.
上記通気栓において、前記開口部を2つ以上有し、前記筒状部材の側面全周を３６０°としたとき、隣り合う開口部同士の間の非開口部分をいずれも９０°以下とすることが望ましい。 In the vent plug, when there are two or more openings and the entire side surface of the cylindrical member is 360 °, the non-opening portion between adjacent openings is 90 ° or less. Is desirable.
上記通気栓において、前記通気膜の片面または両面に補強膜が形成されていることが望ましい。 In the vent plug, it is desirable that a reinforcing film is formed on one side or both sides of the vent film.
上記通気栓において、前記通気膜が撥液性を有することが望ましい。 In the vent plug, it is desirable that the vent film has liquid repellency.
上記通気栓において、前記通気膜を多孔質ポリテトラフルオロエチレン膜で構成することが望ましい。 In the vent plug, it is preferable that the vent film is made of a porous polytetrafluoroethylene film.
上記通気栓の望ましい検査方法は、上記通気栓の側面像を撮影する工程と、該側面像から、前記通気膜が適切に固定されているか否かを判定する工程とを含む。 A desirable inspection method for the vent plug includes a step of photographing a side image of the vent plug and a step of determining whether or not the vent film is appropriately fixed from the side image.
本発明の通気栓では、通気膜の周縁部が筒状部材により挟持され、筒状部材の側面には通気膜の周縁端部を視認できる所定の開口部が形成されている。この開口部を通して筒状部材の内部を視認することができるため、通気膜が適切に保持されていることを判別することができる。 In the vent plug of the present invention, the peripheral portion of the gas permeable membrane is sandwiched by the cylindrical member, and a predetermined opening that allows the peripheral edge portion of the gas permeable membrane to be visually recognized is formed on the side surface of the cylindrical member. Since the inside of the cylindrical member can be visually recognized through the opening, it can be determined that the gas permeable membrane is appropriately held.
１．通気栓の構造
以下、本発明の実施の形態における通気栓の構造について図面を参照しながら説明する。
1. Structure of Vent Plug Hereinafter, the structure of the vent plug in the embodiment of the present invention will be described with reference to the drawings.
（実施の形態１）
図１は本発明の実施の形態１に係る通気栓の外観図、図２は同通気栓の側面図、図３は同通気栓の断面図である。図１〜３において、貫通孔１ａを有する筒状部材１と、貫通孔１ａを横断する通気膜２により通気栓が構成されている。通気膜２の周縁部は筒状部材１により挟持され、筒状部材１の側面には通気膜２の周縁端部を視認できる開口部３が形成されている。
(Embodiment 1)
1 is an external view of a vent plug according to Embodiment 1 of the present invention, FIG. 2 is a side view of the vent plug, and FIG. 3 is a cross-sectional view of the vent plug. 1 to 3, a tubular plug 1 having a through hole 1a and a vent film 2 crossing the through hole 1a constitute a vent plug. The peripheral part of the gas permeable membrane 2 is sandwiched between the cylindrical members 1, and an opening 3 is formed on the side surface of the cylindrical member 1 so that the peripheral edge of the gas permeable film 2 can be visually recognized.
上記通気栓の作製後、この開口部３を通して通気膜２の周縁端部の存在状態を把握することができる。例えば、開口部３において、通気膜２の周縁端部の存在が確認されれば、通気膜２は所定の位置に適切に固定されていると判断される。一方、開口部３において通気膜２の存在が確認されなければ、通気膜２は、図１４、或いは図１５に示した例のように、所定の位置に配置されていないと判定することができる。そのように判定された通気栓は、不良品として廃棄される。 After producing the vent plug, the existence state of the peripheral edge of the vent film 2 can be grasped through the opening 3. For example, if the presence of the peripheral edge of the gas permeable membrane 2 is confirmed in the opening 3, it is determined that the gas permeable membrane 2 is appropriately fixed at a predetermined position. On the other hand, if the presence of the gas permeable membrane 2 is not confirmed in the opening 3, it can be determined that the gas permeable membrane 2 is not arranged at a predetermined position as in the example shown in FIG. 14 or FIG. . The vent plug thus determined is discarded as a defective product.
通気膜２の検査は目視によって行うこともできるが、自動化することもできる。製造された通気栓の側面像を撮影する工程と、側面像から、通気膜が適切に固定されているか否かを判定する工程とを含む通気栓の検査方法を採用してもよい。上記判定には、側面像において、開口部３内に所定割合以上（例えば８０面積％以上）の通気膜２が存在している場合に良品と判断し、所定割合未満（例えば８０面積％未満）しか通気膜２が確認されない場合に不良品と判断するステップを含ませることができる。 The inspection of the gas permeable membrane 2 can be performed visually, but can also be automated. You may employ | adopt the test | inspection method of a vent plug including the process of image | photographing the side image of the manufactured vent plug, and the process of determining whether a ventilation film is appropriately fixed from a side image. In the above determination, when the air-permeable membrane 2 is present in the opening 3 in a predetermined ratio or more (for example, 80 area% or more) in the side image, it is determined as a non-defective product and less than the predetermined ratio (for example, less than 80 area%) Only when the gas permeable membrane 2 is confirmed, a step of determining a defective product can be included.
以上のように、筒状部材１の側面に開口部３を設けることにより、製造された通気栓の良／不良を容易かつ確実に判定することができる。 As described above, by providing the opening 3 on the side surface of the cylindrical member 1, it is possible to easily and reliably determine whether the manufactured vent plug is good or bad.
（実施の形態２）
図４は、本発明の実施の形態２に係る通気栓の外観図である。実施の形態１に係る通気栓と同様のものであるが、実施の形態１に係る通気栓とは筒状部材１と通気膜２の色が異なる。実施の形態１に係る通気栓では、筒状部材１が黒に近い色を有しており、通気膜２が白に近い色を有していたため、筒状部材１と通気膜２のコントラストがよいものである。実施の形態２に係る通気栓では、筒状部材１が白に近い色を有し、通気膜２が黒に近い色を有しており、同様にコントラストがよい。本発明の要旨は、上記の通り、筒状部材１の開口部３を通して通気膜２の存在を確認することにある。したがって、筒状部材１と通気膜２との間で、外観上の差異が大きいことがより好ましい。外観上の差異が生じる要因としては、材質の違いによる色の違い、光反射率の違い、表面粗さの違い、質感の違い等、様々な違いが考えられるが、中でも色に違いがあることが識別する上で好ましい。
(Embodiment 2)
FIG. 4 is an external view of a vent plug according to Embodiment 2 of the present invention. Although the same as the vent plug according to the first embodiment, the color of the tubular member 1 and the vent film 2 is different from the vent plug according to the first embodiment. In the vent plug according to Embodiment 1, the tubular member 1 has a color close to black, and the vent film 2 has a color close to white. Therefore, the contrast between the tubular member 1 and the vent film 2 is high. It ’s good. In the vent plug according to the second embodiment, the tubular member 1 has a color close to white, and the vent film 2 has a color close to black, and similarly has good contrast. The gist of the present invention is to confirm the presence of the gas permeable membrane 2 through the opening 3 of the tubular member 1 as described above. Therefore, it is more preferable that the difference in appearance between the tubular member 1 and the gas permeable membrane 2 is large. Various factors such as color differences due to material differences, light reflectance differences, surface roughness differences, texture differences, etc. can be considered as factors that cause differences in appearance. Is preferable for identification.
色には、よく知られているように、色相・明度・彩度の三要素が存在する。本実施の形態では、筒状部材１と通気膜２との間でどの程度の色の違いがあれば通気膜２の識別を行う上で好ましいのか、三要素のそれぞれについて規定するものである。 As is well known, color has three elements: hue, lightness, and saturation. In the present embodiment, it is defined for each of the three elements whether a color difference between the tubular member 1 and the gas permeable membrane 2 is preferable for identifying the gas permeable membrane 2.
（１）色相（Ｈ）
色相Ｈは、色相環(hue circle)を用いて特定することができる。色相環とは、色相の総体を順序立てて、色相知覚の差がほぼ等歩度になるように分割して円環状に並べたものである。色相環上では、補色は反対の位置に設ける。色相環は、理論的には境目がなく連続的なものである。ＪＩＳ Ｚ１８２１では、色相環が３０分割で表現されている。その他、２４分割で表現されたもの（日本色研事業株式会社の色相環）も知られている。色相Ｈの違いは、色相環の全周を３６０°としたときの２色間の角度で示すものである。本発明では、筒状部材１と通気膜２との間の色相差は、１５°以上であることが好ましい。この１５°という角度は、全周３６０°を２４分割した色相環において、隣り合う色相の間隔を表す角度である。より好ましくは３０°以上である。
(1) Hue (H)
The hue H can be specified using a hue circle. The hue circle is an arrangement in which the total hue is divided and arranged in an annular shape so that the difference in hue perception is approximately equal. On the hue circle, complementary colors are provided at opposite positions. The color wheel is theoretically continuous and continuous. In JIS Z1821, the hue circle is expressed in 30 divisions. In addition, what is expressed in 24 divisions (Nippon Color Research Co., Ltd. hue ring) is also known. The difference in hue H is indicated by the angle between the two colors when the entire circumference of the hue circle is 360 °. In the present invention, the hue difference between the tubular member 1 and the gas permeable membrane 2 is preferably 15 ° or more. The angle of 15 ° is an angle representing the interval between adjacent hues in the hue circle obtained by dividing the entire circumference of 360 ° into 24 parts. More preferably, it is 30 ° or more.
（２）明度（Ｖ）
色知覚の属性のうち、明度Ｖは、無彩色を基準として理想的な黒を０度、理想的な白を１０度とし、その間を明度知覚の差がほぼ等歩度になるように分割し、その間に属する中間的な明度Ｖを１〜９度で表したものである（ＪＩＳ Ｚ１８２１の３．２「明度の表示方法」参照）。本発明では、筒状部材１と通気膜２との間の明度差は、１度以上であることが好ましい。より好ましくは２度以上である。明度の表示記号は、ＪＩＳ Ｚ１８２１の６（２）「標準色標との直接比較から定める方法」を用いることができる。
(2) Lightness (V)
Among the attributes of color perception, the lightness V is divided so that the ideal black is 0 degrees and the ideal white is 10 degrees on the basis of the achromatic color, and the difference in lightness perception is approximately equal. The intermediate lightness V belonging to that time is expressed by 1 to 9 degrees (see 3.2 “Lightness Display Method” of JIS Z1821). In the present invention, the lightness difference between the tubular member 1 and the gas permeable membrane 2 is preferably 1 degree or more. More preferably, it is 2 degrees or more. As the lightness display symbol, JIS Z1821 6 (2) “Method determined from direct comparison with standard color standard” can be used.
（３）彩度（Ｃ）
色知覚の属性のうち、彩度Ｃは、有彩色の程度を示すものであり、無彩色を０とし、彩度の度合いの一定の増加分に従って順次１，２，３，４のように表したものである（ＪＩＳ Ｚ１８２１の３．３「彩度の表示方法」参照）。本発明では、筒状部材１と通気膜２との間の彩度差は、２度以上であることが好ましい。より好ましくは３度以上である。彩度の表示記号は、ＪＩＳ Ｚ１８２１の６（２）「標準色標との直接比較から定める方法」を用いることができる。
(3) Saturation (C)
Of the color perception attributes, saturation C indicates the degree of chromatic color, achromatic color is set to 0, and is sequentially expressed as 1, 2, 3, 4 in accordance with a constant increase in the degree of saturation. (See 3.3 “Saturation Display Method” of JIS Z1821). In the present invention, the saturation difference between the tubular member 1 and the gas permeable membrane 2 is preferably 2 degrees or more. More preferably, it is 3 degrees or more. As the display symbol of saturation, JIS Z1821 6 (2) “Method determined from direct comparison with standard color standard” can be used.
以上説明したように、上記（１）〜（３）の条件のうち、少なくとも１つを満足するように筒状部材１と通気膜２の材料を選択すれば、開口部３を通しての通気膜２の確認作業（確認工程）が一層容易かつ確実となる。 As described above, if the material of the tubular member 1 and the gas permeable membrane 2 is selected so as to satisfy at least one of the above conditions (1) to (3), the gas permeable membrane 2 through the opening 3 is selected. This confirmation work (confirmation process) becomes easier and more reliable.
また、色の相違以外に、或いは色の相違に加え、筒状部材１と通気膜２との識別性を高めるために、発光材料（自発光・反射光を含む）を添加する手法を用いてもよい。発光材料として、筒状部材１または通気膜２のいずれか一方、或いは両方に、蓄光剤、蛍光剤、光反射材のいずれか１種以上を添加することができる。 Further, in addition to the color difference or in addition to the color difference, a method of adding a light emitting material (including self-luminous / reflected light) is used in order to improve the distinguishability between the tubular member 1 and the gas permeable membrane 2. Also good. As the luminescent material, one or more of a phosphorescent agent, a fluorescent agent, and a light reflecting material can be added to one or both of the tubular member 1 and the gas permeable membrane 2.
蓄光剤としては、例えば、硫化亜鉛に銅を賦活したものや酸化アルミニウム或いは酸化ストロンチウムを結晶化したものが用いられる。蛍光剤としては、硫化亜鉛蛍光体やハロリン酸蛍光体等が代表的に知られている。光反射材としては、例えば、白金、金、銀、アルミニウムなどの金属粒子、ホウ珪酸、ソーダライムなどのガラス粒子、マイカ粒子などの鉱物粒子等を使用することができる。 As the luminous agent, for example, zinc sulfide activated copper or aluminum oxide or strontium oxide crystallized is used. As fluorescent agents, zinc sulfide phosphors, halophosphate phosphors and the like are typically known. As the light reflecting material, for example, metal particles such as platinum, gold, silver, and aluminum, glass particles such as borosilicate and soda lime, mineral particles such as mica particles, and the like can be used.
（実施の形態３）
図５は、本発明の実施の形態３に係る通気栓の外観図である。基本的には、実施の形態１に係る通気栓と同様のものであるが、実施の形態３では、開口部３を４つ備えている（そのうち、図５に示されている開口部は、開口部３ａ、３ｂの２つである）。さらに、実施の形態３では、筒状部材１の側面全周を３６０°としたとき、隣り合う開口部同士の間の非開口部分がいずれも９０°以下となるように設計されている。すなわち、図５に示すように開口部３ａと開口部３ｂとの間の非開口部分が、筒状部材１の中心軸から見てα（９０°以下）の拡がり角となるように設計されている。このような構成とすることにより、開口部３ａから確認する限りにおいて通気膜２が適切に固定されていれば、仮に非開口部分における通気膜２に多少のズレが生じていたとしても通気栓の機能には問題がないレベルであると判断することができる。
(Embodiment 3)
FIG. 5 is an external view of a vent plug according to Embodiment 3 of the present invention. Basically, it is the same as the vent plug according to the first embodiment, but in the third embodiment, four openings 3 are provided (of which the opening shown in FIG. Two openings 3a and 3b). Furthermore, in Embodiment 3, when the whole side surface circumference of the cylindrical member 1 is set to 360 °, all the non-opening portions between adjacent opening portions are designed to be 90 ° or less. That is, as shown in FIG. 5, the non-opening portion between the opening 3a and the opening 3b is designed to have an expansion angle α (90 ° or less) when viewed from the central axis of the tubular member 1. Yes. By adopting such a configuration, as long as the air-permeable membrane 2 is appropriately fixed as long as it is confirmed from the opening 3a, even if some deviation occurs in the air-permeable membrane 2 in the non-opening portion, It can be determined that there is no problem in the function.
なお、実施の形態３においては、開口部３の数を４つとした場合について説明したが、開口部３の延在範囲や通気栓の大きさ等によって適宜調整することは可能であり、例えば、２つ以上存在することが好ましい。 In the third embodiment, the case where the number of the opening portions 3 is four has been described. However, it can be appropriately adjusted depending on the extension range of the opening portions 3 and the size of the vent plug, for example, Two or more are preferably present.
（実施の形態４）
図６は、本発明の実施の形態４に係る通気栓の外観図である。基本的には、実施の形態１〜３に係る通気栓と同様のものであるが、実施の形態４では、開口部３が筒状部材１側面の全周にわたって形成されている。これにより、あらゆる方向から通気膜２の形成状態を確認することができる。
(Embodiment 4)
FIG. 6 is an external view of a vent plug according to Embodiment 4 of the present invention. Basically, it is the same as the vent plug according to the first to third embodiments, but in the fourth embodiment, the opening 3 is formed over the entire circumference of the side surface of the tubular member 1. Thereby, the formation state of the ventilation film 2 can be confirmed from all directions.
筒状部材１のうち通気膜２の下側に存在する部分を「下部筒状部材」、上側に存在する部分を「上部筒状部材」とした場合において、下部筒状部材の内径と上部筒状部材の内径が略同一であり、下部筒状部材の外径と上部筒状部材の外径が略同一であることが好ましい。その理由は、内径又は外径が大きく異なる場合は、上部筒状部材と下部筒状部材の熱収縮の程度差によりストレスが生じ、通気栓に変形が生じてしまう可能性があるからである。上記内径および外径は、通気膜２に接する部分において特定されるものとする。 In the case where the lower part of the gas permeable membrane 2 in the cylindrical member 1 is the “lower cylindrical member” and the upper part is the “upper cylindrical member”, the inner diameter of the lower cylindrical member and the upper cylinder Preferably, the inner diameter of the cylindrical member is substantially the same, and the outer diameter of the lower cylindrical member and the outer diameter of the upper cylindrical member are substantially the same. The reason is that when the inner diameter or the outer diameter is greatly different, stress may be generated due to the difference in thermal contraction between the upper cylindrical member and the lower cylindrical member, and the vent plug may be deformed. The inner diameter and the outer diameter are specified at a portion in contact with the gas permeable membrane 2.
なお、後述するように通気膜２に補強層を積層して用いる場合は、補強層が通気膜２から剥離する可能性を低くするために、筒状部材１のうち通気膜２の下側に存在する部分と上側に存在する部分とがより広い面積で繋がっている通気栓（例えば図１〜３）を用いることが好ましい。 As will be described later, in the case of using a reinforcing layer laminated on the gas permeable membrane 2, in order to reduce the possibility that the reinforcing layer peels from the gas permeable membrane 2, the tubular member 1 is provided below the gas permeable membrane 2. It is preferable to use a vent plug (for example, FIGS. 1 to 3) in which the existing portion and the upper portion are connected by a wider area.
（実施の形態５）
図７の（ａ）は、本発明の実施の形態５に係る通気栓の平面図（上面図）であり、（ｂ）は、同側面図である。実施の形態５では、筒状部材１において、通気膜２の周縁部を挟持する面に凹凸形状を有している。後述するように、通気膜２には膜の方向によって異方性が存在する場合があるため、凹凸形状の付与により通気膜２の方向性を表示することができる。また、凹凸形状により、通気膜２と筒状部材１とがより強固に固定される。
(Embodiment 5)
FIG. 7A is a plan view (top view) of a vent plug according to Embodiment 5 of the present invention, and FIG. 7B is a side view thereof. In the fifth embodiment, the cylindrical member 1 has a concavo-convex shape on the surface sandwiching the peripheral edge portion of the gas permeable membrane 2. As will be described later, since the gas permeable membrane 2 may have anisotropy depending on the direction of the membrane, the directionality of the gas permeable membrane 2 can be displayed by providing an uneven shape. Moreover, the gas permeable membrane 2 and the cylindrical member 1 are more firmly fixed by the uneven shape.
（実施の形態６）
図８の（ａ）は、本発明の実施の形態６に係る通気栓の平面図（上面図）であり、（ｂ）は、同側面図である。実施の形態６においても、通気膜２の周縁部を挟持する面に凹凸形状を有している。実施の形態５の場合と同様に、通気膜２には膜の方向によって異方性が存在する場合があるため、凹凸形状の付与により通気膜２の方向性を表示することができる。本実施の形態では、通気膜２の通気面にも凹凸形状が付与されるように構成しているため、通気栓の上面側から見ても通気膜２の方向性を確認することができる。また、このように通気面に凹凸形状が付与されている場合、通気膜２の通気面積が増えるため、通気栓の圧力損失が低減される。また、実施の形態５の場合と同様に通気膜２と筒状部材１とがより強固に固定される。
(Embodiment 6)
FIG. 8A is a plan view (top view) of a vent plug according to Embodiment 6 of the present invention, and FIG. 8B is a side view thereof. Also in the sixth embodiment, the surface sandwiching the peripheral edge of the gas permeable membrane 2 has an uneven shape. As in the case of the fifth embodiment, since the gas permeable membrane 2 may have anisotropy depending on the direction of the membrane, the directionality of the gas permeable membrane 2 can be displayed by providing an uneven shape. In this Embodiment, since it is comprised so that an uneven | corrugated shape may be provided also to the ventilation surface of the ventilation film 2, the directionality of the ventilation film 2 can also be confirmed even if it sees from the upper surface side of a ventilation plug. In addition, when the vent surface is provided with an uneven shape in this way, the vent area of the vent film 2 is increased, so that the pressure loss of the vent plug is reduced. Further, as in the case of the fifth embodiment, the gas permeable membrane 2 and the tubular member 1 are more firmly fixed.
２．通気栓の各構成要素の詳細な説明
次に、本発明の通気栓における筒状部材１および通気膜２の詳細（好ましい材料等）について説明する。
2. Detailed description of each component of the vent plug Next, details (preferable materials and the like) of the tubular member 1 and the vent film 2 in the vent plug of the present invention will be described.
（１）筒状部材
筒状部材１は、上述したように電気装置の筐体等に通気栓を差し込む用途を考慮すれば、弾力性のある樹脂で構成されることが好ましい。樹脂の例としては、サントプレーン、ミナストマー等のオレフィン系を主とした弾性樹脂、エチレンプロピレンゴム（ＥＰＤＭ）、アクリルゴム、シリコンゴム、フッ素ゴムなどのゴム系若しくはゴム代替の弾性樹脂、ポリプロピレン（ＰＰ）を含むものが望ましい。筒状部材１は、上述したように通気膜２を上下から挟み込んだ構造を有しているが、通気膜２の上側と下側とで異なる種類の材料を用いてもよい。電気装置の一部に本発明の通気栓を容易に差し込むためには、筒状部材１の硬度（ＪＩＳ Ｋ ６２５３）は１００度以下、より好ましくは８０度以下である。筒状部材のシール性を担保するためには、１０度以上、より好ましくは４０度以上である。ゴム硬度の計測には、デュロメータ（株式会社島津製作所製：ＤＵＲＯＭＥＴＥＲ Ａ）が用いられる。
(1) Cylindrical member The cylindrical member 1 is preferably made of an elastic resin in consideration of the use of inserting a vent plug into a casing or the like of an electric device as described above. Examples of the resin include olefin-based elastic resins such as santoprene and minastomer, rubber-based elastic resins such as ethylene propylene rubber (EPDM), acrylic rubber, silicon rubber, and fluorine rubber, or polypropylene (PP ) Is desirable. The cylindrical member 1 has a structure in which the gas permeable membrane 2 is sandwiched from above and below as described above, but different types of materials may be used for the upper side and the lower side of the gas permeable membrane 2. In order to easily insert the vent plug of the present invention into a part of the electric device, the cylindrical member 1 has a hardness (JIS K 6253) of 100 degrees or less, more preferably 80 degrees or less. In order to ensure the sealing performance of the tubular member, the angle is 10 degrees or more, more preferably 40 degrees or more. A durometer (manufactured by Shimadzu Corporation: DUROMETER A) is used for measuring the rubber hardness.
通気膜２を含む平面からみた筒状部材１の端部（突起部）の高さは、筒状部材１の貫通孔１ａの直径に対し、５〜２００％が好ましく、より好ましくは１０〜１００％、さらに好ましくは１５〜５０％とすることが望ましい。 The height of the end (projection) of the cylindrical member 1 as viewed from the plane including the gas permeable membrane 2 is preferably 5 to 200%, more preferably 10 to 100, with respect to the diameter of the through hole 1a of the cylindrical member 1. %, More preferably 15 to 50%.
（２）通気膜
通気膜２の構成材料としては、ポリエチレン、ポリプロピレン、ポリスチレン、ポリイミド等を使用することができるが、好ましくは防水性に優れたフッ素樹脂、更に好ましくは、多孔質ポリテトラフルオロエチレン（多孔質ＰＴＦＥ）のフィルムを用いることが推奨される。通気膜２の微視的形状としては、ネット状、メッシュ状、多孔質のものを用いることができる。多孔質ＰＴＦＥフィルムは、防滴性に優れ、水滴、油滴、塵埃の侵入を防止しつつ電気装置の内外に通気性を持たせる用途に適している。
(2) Breathable membrane As a constituent material of the breathable membrane 2, polyethylene, polypropylene, polystyrene, polyimide, etc. can be used, preferably a fluororesin excellent in waterproofness, more preferably porous polytetrafluoroethylene. It is recommended to use (porous PTFE) film. As the microscopic shape of the gas permeable membrane 2, a net shape, a mesh shape, or a porous shape can be used. The porous PTFE film is excellent in drip-proofing properties and is suitable for applications in which the inside and outside of an electric device have air permeability while preventing intrusion of water droplets, oil droplets and dust.
多孔質ＰＴＦＥフィルムは、ＰＴＦＥのファインパウダーを成形助剤と混合することにより得られるペーストの成形体から、成形助剤を除去した後、高温高速度で延伸、さらに必要に応じて焼成することにより得られるものである。一軸延伸の場合、ノード（折り畳み結晶）が延伸方向に直角に細い島状となっていて、このノード間を繋ぐようにすだれ状にフィブリル（折り畳み結晶が延伸により解けて引出された直鎖状の分子束）が延伸方向に配向している。そして、フィブリル間、又はフィブリルとノードとで画される空間が空孔となった繊維質構造となっている。また、二軸延伸の場合には、フィブリルが放射状に広がり、フィブリルを繋ぐノードが島状に点在して、フィブリルとノードとで画された空間が多数存在するクモの巣状の繊維質構造となっている。 A porous PTFE film is obtained by removing a molding aid from a molded body of a paste obtained by mixing PTFE fine powder with a molding aid, stretching at a high temperature and a high speed, and further firing if necessary. It is obtained. In the case of uniaxial stretching, the nodes (folded crystals) are in the form of thin islands perpendicular to the stretching direction, and the fibrils (straight-lined drawn by unfolding the folded crystals by stretching to connect the nodes) Molecular bundle) is oriented in the stretching direction. And it has a fibrous structure in which spaces defined between fibrils or between fibrils and nodes become holes. In the case of biaxial stretching, the fibrils spread radially, the nodes connecting the fibrils are scattered in islands, and a cobweb-like fibrous structure in which many spaces defined by the fibrils and the nodes exist. ing.
通気膜２は、一軸延伸多孔質ＰＴＦＥフィルムであっても良いし、二軸延伸多孔質ＰＴＦＥフィルムであってもよい。 The gas permeable membrane 2 may be a uniaxially stretched porous PTFE film or a biaxially stretched porous PTFE film.
通気膜２は、単独で（単層で）使用できるだけの強度を有することが好ましいが、不織布、織物や編物等のネット等、伸縮性を持ち、好ましくは１２０℃の高温に耐え得る通気性の補強層（補強膜）と積層して使用してもよい。 The gas permeable membrane 2 is preferably strong enough to be used alone (in a single layer), but has elasticity such as a nonwoven fabric, a net such as a woven fabric or a knitted fabric, and preferably has a breathability capable of withstanding a high temperature of 120 ° C. You may use it, laminating | stacking with a reinforcement layer (reinforcement membrane).
通気膜２の物理的特性としては、１ｋＰａ以上、より好ましくは１０ｋＰａ以上の耐水圧と、１０００秒以下、より好ましくは１００秒以下の透気度（ＪＩＳ Ｐ ８１１７）を備えることが望ましい。 As physical characteristics of the gas permeable membrane 2, it is desirable to have a water pressure resistance of 1 kPa or more, more preferably 10 kPa or more, and an air permeability (JIS P 8117) of 1000 seconds or less, more preferably 100 seconds or less.
通気膜２は、その細孔内表面に撥液性を付与されているのが好ましい。通気膜２に撥液性を持たせることで、体脂や機械油、水滴などの様々な汚染物が、通気膜の細孔内に浸透若しくは保持されるのを抑制できる。これらの汚染物質は、通気膜の捕集特性や通気特性を低下させ、通気膜としての機能を損なわせる原因となる。なお、筒状部材１の表面全体に撥液性を付与してもよい。 The gas permeable membrane 2 is preferably provided with liquid repellency on the inner surface of the pores. By imparting liquid repellency to the gas permeable membrane 2, it is possible to prevent various contaminants such as body fat, machine oil, and water droplets from penetrating or being retained in the pores of the gas permeable membrane. These contaminants reduce the trapping characteristics and ventilation characteristics of the gas permeable membrane and cause the function of the gas permeable membrane to be impaired. In addition, you may provide liquid repellency to the whole surface of the cylindrical member 1. FIG.
なお、特許請求の範囲及び本明細書において、撥液性を付与する方法としては、撥液性材料を使用する、もしくは、撥液剤を添加することでも可能であり、この場合の「撥液」とは、液体をはじく性質乃至は機能を指すものであるとし、「撥液剤」には、「撥水剤」、「撥油剤」、「撥水撥油剤」等を含むものとする。以下、撥水撥油性ポリマーを例に挙げて説明する。 In the claims and the present specification, as a method for imparting liquid repellency, a liquid repellent material can be used, or a liquid repellent can be added. The term “liquid repellent” includes “water repellent”, “oil repellent”, “water repellent”, and the like. Hereinafter, the water- and oil-repellent polymer will be described as an example.
撥水撥油性ポリマーとしては、含フッ素側鎖を有するポリマーを用いることができる。撥水撥油性ポリマーおよびそれを多孔質ＰＴＦＥフィルムに複合化する方法の詳細についてはＷＯ９４／２２９２８号公報などに開示されている。 As the water / oil repellent polymer, a polymer having a fluorine-containing side chain can be used. Details of the water- and oil-repellent polymer and the method of combining it with a porous PTFE film are disclosed in WO94 / 22928.
（３）その他
筒状部材１と通気膜２との接合には、後述するように溶融した筒状部材１に通気膜２を圧着させる方法を用いることができるし、両面粘着テープを使用することもできるが本発明の必須の構成要素ではない。その両面粘着テープには、ポリエチレン不織布、ポリプロピレン不織布、ナイロン不織布等を芯材とした不織布基材両面粘着テープ、ＰＥＴ基材両面粘着テープ、ポリイミド基材両面粘着テープ、ナイロン基材両面粘着テープ、発泡体（例えば、ウレタンフォーム、シリコーンフォーム、アクリルフォーム、ポリエチレンフォーム）基材両面粘着テープ、基材レス両面粘着テープなど様々なタイプのものを用いることができる。
(3) Others For joining the tubular member 1 and the gas permeable membrane 2, a method of pressing the gas permeable membrane 2 to the molten cylindrical member 1 as described later can be used, and a double-sided adhesive tape is used. However, it is not an essential component of the present invention. The double-sided pressure-sensitive adhesive tape includes a nonwoven fabric-based double-sided pressure-sensitive adhesive tape, a PET-based double-sided pressure-sensitive adhesive tape, a polyimide-based double-sided pressure-sensitive adhesive tape, a nylon-based double-sided pressure-sensitive adhesive tape, and foam. Various types of body (for example, urethane foam, silicone foam, acrylic foam, polyethylene foam) base material double-sided pressure-sensitive adhesive tape and base material-less double-sided pressure-sensitive adhesive tape can be used.
３．通気栓の使用例
本発明の通気栓は、例えば内部に電子部品を収納するケース（筐体）に直接又は間接に取り付けられるが、取り付け部位の形状によって筒状部材１の形状は種々変更され得る。
3. Example of Use of Vent Plug Although the vent plug of the present invention is attached directly or indirectly to a case (housing) that houses an electronic component inside, for example, the shape of the cylindrical member 1 can be variously changed depending on the shape of the attachment portion. .
（使用例１）
図９に示すように、通気栓が通気パイプ６の先端部に取り付けられる場合には、筒状部材１の内側に通気パイプ６の先端が当接する段差部を設けてもよい。また、図示はしていないが、筒状部材１の形状を通気パイプ６の内側と外側の両方に勘合するように形成すれば、通気栓の取り付け強度が高くなる。
(Usage example 1)
As shown in FIG. 9, when the vent plug is attached to the tip end portion of the vent pipe 6, a step portion where the tip end of the vent pipe 6 abuts inside the tubular member 1 may be provided. Although not shown, if the shape of the cylindrical member 1 is formed so as to fit both the inside and the outside of the vent pipe 6, the attachment strength of the vent plug is increased.
（使用例２）
図１０に示すように、通気栓が上記ケース（筐体）７の一部に設けられた有底穴に取り付けられてもよい。当該穴との勘合性を高めることによりシールド性、取り付け強度に優れた通気栓を作製することができる。
(Usage example 2)
As shown in FIG. 10, a vent plug may be attached to a bottomed hole provided in a part of the case (housing) 7. By increasing the fit with the hole, a vent plug excellent in shielding properties and attachment strength can be produced.
（使用例３）
使用例２の場合と同様に通気栓が上記筐体７の穴に取り付けられる場合には、筒状部材１の側面に開口部３を挟んで少なくとも２つの環状の凸部５を形成してもよい。通気栓と穴の内壁面との勘合性及びシールド性（密封性）を高めるために凸部５を１つ設けることは通常考えられるが、通気栓の勘合性及びシールド性を一層高めるためには、凸部５を２つ設けることが好ましい。例えば、通気栓と穴との間に異物やゴミが挟み込まれた場合、または、穴に傷がある場合には通気栓の勘合性が悪く、気体リークが発生する可能性がある。その点、凸部５を2つ設けると気体リークの可能性は減少する。
(Usage example 3)
When the vent plug is attached to the hole of the casing 7 as in the case of the usage example 2, at least two annular convex portions 5 may be formed on the side surface of the cylindrical member 1 with the opening 3 interposed therebetween. Good. Although it is usually considered to provide one convex portion 5 in order to enhance the fit between the vent plug and the inner wall surface of the hole and the shielding performance (sealing performance), in order to further enhance the fitting and shielding performance of the vent plug. It is preferable to provide two convex portions 5. For example, if foreign matter or dust is sandwiched between the vent plug and the hole, or if the hole is scratched, the fit of the vent plug is poor, and gas leakage may occur. In that respect, the possibility of gas leakage decreases if two convex portions 5 are provided.
また、開口部３を挟んで２つ設けることにより、筒状部材１と凸部５と穴とで密閉空間が形成される。通気膜２の面内方向に沿って流れる気体が開口部３から抜けることによって、密閉空間の圧力変化を制御できる。そのため、開口部３のシールド性が安定する。 Moreover, by providing two with the opening 3 interposed therebetween, a sealed space is formed by the tubular member 1, the convex portion 5, and the hole. When the gas flowing along the in-plane direction of the gas permeable membrane 2 escapes from the opening 3, the pressure change in the sealed space can be controlled. Therefore, the shielding property of the opening 3 is stabilized.
４．通気栓の製造プロセス例
以下、本発明の通気栓の製造に適用し得るプロセス例について説明する。
4). Example of Process for Manufacturing Vent Plug Hereinafter, an example of a process that can be applied to manufacture of the vent plug of the present invention will be described.
（１）射出成型（インジェクションモールディング）
溶融させた熱可塑性樹脂を所定の凹状に加工した金型内に圧入し、その後、熱可塑性樹脂を冷却することで通気栓の成型品を得る方法である。工程手順は、図１２（ａ）〜（ｂ）の工程断面図によって示される。
(1) Injection molding (injection molding)
In this method, a melted thermoplastic resin is press-fitted into a mold processed into a predetermined concave shape, and then the thermoplastic resin is cooled to obtain a molded product of a vent plug. The process procedure is shown by the process cross-sectional views of FIGS.
まず、図１２（ａ）に示すように第１の金型１１及び第２の金型１２を向かい合わせて密着させることにより、金型の内部に筒状部材１の形状の空洞を形成する。第１の金型１１及び第２の金型１２の間には、予め通気膜２を挟持しておく。 First, as shown in FIG. 12A, the first mold 11 and the second mold 12 are brought into close contact with each other to form a cavity having the shape of the cylindrical member 1 inside the mold. The gas permeable membrane 2 is sandwiched between the first mold 11 and the second mold 12 in advance.
次に、図１２（ｂ）に示すように、注入口１３から溶融させた熱可塑性樹脂を第１の金型１１内に注入する。溶融樹脂の注入の際、樹脂の注入圧力で通気膜２（例えばＰＴＦＥ多孔質体）の空隙部分に樹脂を含侵させ、さらに樹脂を冷却し、硬化させることで樹脂（すなわち成型された筒状部材１）と通気膜２とがアンカー効果によって強固に固着された状態となる。 Next, as shown in FIG. 12B, the thermoplastic resin melted from the injection port 13 is injected into the first mold 11. When the molten resin is injected, the resin is impregnated into the void portion of the gas permeable membrane 2 (for example, PTFE porous body) by the injection pressure of the resin, and further, the resin is cooled and cured, so that the resin (that is, the molded cylindrical shape) The member 1) and the gas permeable membrane 2 are firmly fixed by the anchor effect.
最後に、第１の金型１１及び第２の金型１２を脱型するとともに、余分の通気膜２をカットすることにより、筒状部材１と通気膜２で構成された通気栓を得ることができる。 Finally, the first metal mold 11 and the second metal mold 12 are removed from the mold, and the excess air-permeable membrane 2 is cut to obtain a vent plug composed of the tubular member 1 and the air-permeable membrane 2. Can do.
なお、ここでは１つの筒状部材１に対して１枚の通気膜２を配置して１つの通気栓を成型する工程を例にして説明したが、複数の筒状部材１を成型できる金型を用い、１枚の通気膜２を配置して複数の通気栓を成型し、その後に、個々の筒状部材１の側面において通気膜２をカットすることにより、製造効率のよい並列処理式の製造工程を実現できる。 Here, although the description has been given by taking as an example the process of forming one vent plug by arranging one gas permeable membrane 2 for one cylindrical member 1, a mold capable of molding a plurality of cylindrical members 1 Is used to form a plurality of vent plugs, and then cut the vent film 2 on the side surface of each tubular member 1 to produce a parallel processing type with high manufacturing efficiency. A manufacturing process can be realized.
（２）圧縮成型（コンプレッションモールディング）
工程手順としては上述の射出成型と同様であるが、圧縮成型では加硫によって硬化する樹脂（上記ＥＰＤＭ等のゴム系材料）を高圧のプレス機で所定形状に加工した金型内に圧入し、その後、加硫によって樹脂を硬化させることで通気栓の成型品を得る方法である。樹脂の注入圧力で、通気膜２（例えばＰＴＦＥ多孔質体）の空隙部分に樹脂を含侵させ、樹脂を冷却・硬化することでアンカー効果による強固な固着効果を得ることができる。
(2) Compression molding (compression molding)
The process procedure is the same as the above-described injection molding, but in compression molding, a resin that is cured by vulcanization (a rubber-based material such as EPDM) is pressed into a mold processed into a predetermined shape by a high-pressure press, Thereafter, the resin is cured by vulcanization to obtain a molded product of the vent plug. The resin can be impregnated into the void portion of the gas permeable membrane 2 (for example, PTFE porous body) by the resin injection pressure, and the resin can be cooled and cured to obtain a strong fixing effect due to the anchor effect.
１ 筒状部材
１ａ 貫通孔
２ 通気膜
３、３ａ、３ｂ 開口部
５ 環状部材
６ 通気パイプ
７ ケース（筐体）
１１ 第１の金型
１２ 第２の金型
１３ 注入口
DESCRIPTION OF SYMBOLS 1 Cylindrical member 1a Through-hole 2 Venting membrane 3, 3a, 3b Opening part 5 Annular member 6 Venting pipe 7 Case (housing)
11 First mold 12 Second mold 13 Inlet
Claims (11)
前記筒状部材と前記通気膜の色相は、色相の尺度である色相環の全周を３６０°とした場合に、互いに１５°以上離れている。 （１）
前記筒状部材と前記通気膜は、明度が１度以上異なる。 （２）
前記筒状部材と前記通気膜は、彩度が２度以上異なる。 （３） The vent plug according to claim 1, wherein at least one of the following conditions (1) to (3) is satisfied.
The hues of the tubular member and the gas permeable membrane are separated from each other by 15 ° or more when the entire circumference of the hue ring, which is a measure of hue, is 360 °. (1)
The tubular member and the gas permeable membrane differ in brightness by 1 degree or more. (2)
The cylindrical member and the gas permeable membrane differ in saturation by 2 degrees or more. (3)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009140889A JP5563245B2 (en) | 2009-06-12 | 2009-06-12 | Vent plug and inspection method of vent plug |
| PCT/JP2010/059687 WO2010143624A1 (en) | 2009-06-12 | 2010-06-08 | Air-permeable plug and method of inspecting air-permeable plug |
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| JP2009140889A JP5563245B2 (en) | 2009-06-12 | 2009-06-12 | Vent plug and inspection method of vent plug |
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| JP5563245B2 true JP5563245B2 (en) | 2014-07-30 |
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| WO (1) | WO2010143624A1 (en) |
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| CN102407732A (en) * | 2011-10-26 | 2012-04-11 | 东风汽车股份有限公司 | Hanging pipe type automobile rear axle vent plug |
| JP5792603B2 (en) * | 2011-11-28 | 2015-10-14 | 日東電工株式会社 | Ventilation member |
| JP2013254909A (en) * | 2012-06-08 | 2013-12-19 | Nitto Denko Corp | Waterproof ventilation member and ventilation structure |
| EP3168512B1 (en) * | 2014-07-07 | 2019-09-04 | The University of Tokyo | Fluid device and method for manufacturing valve |
| JP6560001B2 (en) * | 2015-04-06 | 2019-08-14 | 積水樹脂株式会社 | Manufacturing method of film winding pipe |
| JP6726984B2 (en) * | 2016-02-29 | 2020-07-22 | フクダ電子株式会社 | Waterproof inspection structure of pulse oximeter |
| CN111122071A (en) * | 2019-12-31 | 2020-05-08 | 广东罗曼智能科技股份有限公司 | Air tightness detection device of electric toothbrush |
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| JPS63153410U (en) * | 1987-03-30 | 1988-10-07 | ||
| JPH0647182Y2 (en) * | 1988-07-15 | 1994-11-30 | 住友電気工業株式会社 | Breathing valve |
| DE19626792C1 (en) * | 1996-07-03 | 1998-02-26 | Gore W L & Ass Gmbh | Method for producing a closure element in the form of a plastic injection-molded part and a closure element produced by this method |
| DE10029760A1 (en) * | 2000-06-16 | 2002-01-03 | Kador Utz | closure device |
| JP2002143624A (en) * | 2000-11-14 | 2002-05-21 | Saint-Gobain Norton Kk | Air permeable filter and vessel provided with filter |
| JP2003090721A (en) * | 2001-09-19 | 2003-03-28 | Bridgestone Corp | Rubber member detecting method and rubber member pasting method |
| JP2006085100A (en) * | 2004-09-17 | 2006-03-30 | Ricoh Co Ltd | Component discriminating device, manufacturing system, and image forming apparatus |
| JP4879475B2 (en) * | 2004-11-19 | 2012-02-22 | 日東電工株式会社 | Ventilation filter member and ventilation casing using the same |
| JP4683625B2 (en) * | 2005-05-13 | 2011-05-18 | 東海興業株式会社 | Ventilation component, method for manufacturing ventilation component, and waterproof breathable membrane |
| JP4652121B2 (en) * | 2005-05-18 | 2011-03-16 | 日東電工株式会社 | Ventilation member and ventilation casing using the same |
| JP4680220B2 (en) * | 2007-03-23 | 2011-05-11 | 日東電工株式会社 | Waterproof ventilation filter, waterproof ventilation member and housing |
| JP2009007439A (en) * | 2007-06-27 | 2009-01-15 | Nitto Denko Corp | Method for producing breathable film having liquid repellency, breathable film having liquid repellency and breathable member |
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| JP2010286378A (en) | 2010-12-24 |
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