JP3935817B2 - Gas mask with gas sensor - Google Patents

Gas mask with gas sensor Download PDF

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Publication number
JP3935817B2
JP3935817B2 JP2002310167A JP2002310167A JP3935817B2 JP 3935817 B2 JP3935817 B2 JP 3935817B2 JP 2002310167 A JP2002310167 A JP 2002310167A JP 2002310167 A JP2002310167 A JP 2002310167A JP 3935817 B2 JP3935817 B2 JP 3935817B2
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JP
Japan
Prior art keywords
gas
sensor
gas sensor
absorption
lid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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JP2002310167A
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Japanese (ja)
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JP2004141427A (en
Inventor
雄司 斎藤
展也 堀口
暁彦 西田
克一 芝崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Riken Keiki KK
Koken Co Ltd
Original Assignee
Riken Keiki KK
Koken Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to JP2002310167A priority Critical patent/JP3935817B2/en
Publication of JP2004141427A publication Critical patent/JP2004141427A/en
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Publication of JP3935817B2 publication Critical patent/JP3935817B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、吸収缶からの有毒ガスの破過を検知するガスセンサを備えたガスセンサ付き防毒マスクに関する。
【0002】
【従来の技術】
空気中に含まれる有毒ガスを吸収缶で捕集し、吸収缶を通過した清浄な空気が面体内に流入するようにした防毒マスクでは、吸収缶の吸着能力が低下すると有害ガスの破過が発生し、着用者が面体内に達した有毒ガスを吸入して中毒を起こす虞がある。
このような事故を防ぐために、吸収缶の破過を検知するセンサを設け、センサが有毒ガスを検知したら警報を発して、吸収缶の交換時期を知らせるようにした防毒マスクが公知である(特許文献1及び特許文献2参照)。
ところが、これら従来の防毒マスクに設置されているセンサは、ガス検知のみを目的とするものであるため、粒子状物質が共存するような環境、例えば塗装作業等においては、吸収缶を透過した粒子状物質によってセンサ表面が汚染され、故障や感度低下が生じ易い。
【0003】
また、高補集性能の防塵フィルタ(特許文献3参照)を吸収缶に内蔵すると粒子状物質がほとんど透過せず、センサが粒子状物質によって汚染される可能性は低い。
しかし、防塵フィルタを有する吸収缶であっても、粒子状物質が存在する環境下で交換する場合には、センサが汚染の危険性にさらされるため、クリーンな環境下での交換が強いられていた。
さらに、ガスセンサを防塵フィルタで被覆して保護する技術も知られている(特許文献4参照)。
しかし、このものは、箱形の防塵フィルタをガスセンサから間隔をおいて被せてあるので、防塵フィルタ自体の形状が複雑で、交換も面倒であった。
【0004】
【特許文献1】
特開昭57−131458号公報
【特許文献2】
特開平9−196830号公報
【特許文献3】
特開2000−288105号公報
【特許文献4】
実開平7−32559号公報
【0005】
【発明が解決しようとする課題】
この発明は、吸収缶を透過した粒子状物質からガスセンサを保護し、粒子状物質が存在する環境下で吸収缶を交換してもガスセンサが汚染されることが無く、ガスセンサの故障及び検知感度の低下を防止でき、しかも防塵フィルタの交換が容易なガスセンサ付き防毒マスクを提供することを課題とする。
【0006】
【課題を解決するための手段】
本発明のガスセンサ付き防毒マスクは、面体に形成された吸収缶嵌合筒に有毒ガスを捕集する吸収缶を着脱可能に装着し、前記吸収缶の下流側において前記面体に、前記吸収缶に面する端面が開口したセンサホルダを取付け、該センサホルダの内部に前記吸収缶から破過した有毒ガスを検知するガスセンサを収納し、前記センサホルダの開口した端面に貫通孔を有する蓋を被せ、前記蓋と前記ガスセンサとの間に、前記蓋の貫通孔及び前記ガスセンサの検出面を覆うように防塵フィルタを着脱自在に設置し、前記防塵フィルタの外面周縁部に着脱可能に装着されたパッキングを介して、前記防塵フィルタを前記蓋によって押圧固定してある。
【0007】
防塵フィルタで粒子状物質を濾過して、ガスセンサの検出面に粒子状物質が付着するのを防ぐ。
ガスセンサは、センサホルダ及び蓋で適正位置に安定して支持されると共に、保護される。
防塵フィルタが粒子状物質で汚れた時は、センサホルダに被せた蓋を着脱することにより、簡単に交換できる。
【0008】
前記パッキングを介して、前記防塵フィルタを前記ガスセンサに対して押圧固定しても良い。
前記面体の前面に前記吸収缶が嵌合される吸収缶嵌合筒を設け、該吸収缶嵌合筒の奥部に前記ガスセンサを設置することもできる。
【0009】
【発明の実施の形態】
以下、本発明の実施形態を図面に基づいて詳細に説明する。
図5に示すように、本発明のガスセンサ付き防毒マスクは、着用者の鼻及び口を覆う面体1と、面体1の外面に着脱自在に取り付けられる吸収缶2とを有する。
面体1はベルト3で顔面に装着できるようになっており、図3及び図4に示すように、その外面には円形の吸収缶嵌合筒4が形成される。
吸収缶嵌合筒4の外周面にネジ溝22が形成され(図4)、吸収缶嵌合筒4の内部に吸収缶2をはめ込むと共に、その外面から締め付けリング23を被せ(図5)、締め付けリング23の内周面に形成されたネジ溝と吸収缶嵌合筒4のネジ溝22とを螺合して、吸収缶2を取り付けてある。
【0010】
吸収缶嵌合筒4で囲まれた内側、即ち、吸収缶2の下流側には、面体1の内面に連通する吸気口5と、有毒ガスを検知するガスセンサ6とが設置される。
また、面体1の下方には、回路基板、電池及び警報装置7を収納した回路部8が装着される。さらに、回路部8に収納された回路基板、電池及び警報装置7と、吸収缶嵌合筒4の内側に設置されたガスセンサ6とは、面体1の下部に設けられた回路部装着用アダプタ9を通るリード線によって接続されている。
そして、ガスセンサ6は、吸収缶2を破過した有毒ガスを検出すると信号を発し、この信号を受けて警報装置7が音或いは光によって警報を発する。
このように、ガスセンサ6、リード線及び回路部8が面体1に組み込まれているため、防毒マスクが小型化され、リード線が外部に露出して、物に引っかかる心配がない。
【0011】
図1及び図2に示すように、ガスセンサ6は円筒状のセンサケース10の内部に収納され、センサケース10は、面体1に取り付けられた円筒形のセンサホルダ11の内部に収納されている。
センサケース10及びセンサホルダ11の吸収缶2に面する外側端面は開口し、センサホルダ11の内側端面には透孔12が形成されている。
センサケース10は、ガスセンサ6と基盤13とを取り付けやすくするためのものであって、センサケース10の底部外面に装着された基盤13とガスセンサ6とは、センサケース10に形成された孔を通して電気的に接続されている。なお、センサケース10に形成された孔は、基盤13側でハンダ付けにより完全に塞いである。
【0012】
基盤13には温度調節用素子が設けられて、ガスセンサ6内の温度調整が行われるようになっている。
また、基盤13の外周部とセンサホルダ11の底面との間にはOリング14が介在されて、センサホルダ11内と外部との気密性が確保されている。
さらに、センサケース10の外面には蓋15が、2本のネジ16で着脱可能に取り付けられる。なお、センサケース10及び蓋15はプラスチック製であり、耐薬品性を必要としない。
【0013】
蓋15の中央には貫通孔17が形成され、蓋15とガスセンサ6との間に防塵フィルタ18が装填されて、蓋15の貫通孔17を塞ぐと共に、ガスセンサ6の検出面を被覆している。
防塵フィルタ18は、厚み0.2〜0.3mmの不織布より成り、耐薬品性は必用としない。なお、防塵フィルタ18には、防塵マスク用の高捕集性フィルタを用いることができ、一例として、静電フィルタやメカニカルフィルタが考えられる。
【0014】
また、防塵フィルタ18と蓋15との間において、防塵フィルタ18の周縁部には、ゴム製のパッキング19が着脱可能に介在される。そして、このパッキング19によって防塵フィルタ18をガスセンサ6に押し付けて固定すると共に、蓋15と防塵フィルタ18との気密性を維持し、ガスセンサ6の検出面が粒子状物質で汚染されないようにしてある。
従って、空気中に存在する粒子状物質が吸収缶2を透過したり、粒子状物質が存在する環境下で吸収缶2を取り外しても、防塵フィルタ18で保護されたガスセンサ6の検出面が粒子状物質で汚染されることはない。
また、防塵フィルタ18が粒子状物質で汚れた場合は、ネジ16を抜いて蓋15及びパッキング19を外すことにより、簡単に交換することができる。
【0015】
図6は、本発明の第2の実施形態を示す。
センサケース10を用いずに、ガスセンサ6を耐圧性プラスチック製のセンサホルダ11内へ直接収納してある。そして、ガスセンサ6の検出面を防塵フィルタ18で被覆して、防塵フィルタ18の外面周縁部と蓋15との間にパッキング19を介在し、蓋15をセンサホルダ11へネジ16で止め付けて、防塵フィルタ18をパッキング19でガスセンサ6へ押圧固定してある。
その他の構成は第1の実施形態とほぼ同様なので、詳細な説明は省略する。
【0016】
図7は本発明の第3の実施形態を示す。
センサホルダ11の高さをガスセンサ6の高さより大とし、センサホルダ11の内周面に雌ネジ20を形成してある。
また、蓋15の裏面中央部には、センサホルダ11の雌ネジ20と螺合する雄ネジ21を突出してある。
ガスセンサ6の検出面を覆うようにして、センサホルダ11の内部に防塵フィルタ18を収納すると共に、防塵フィルタ18の外面周縁部にパッキング19をあてがい、さらに、センサホルダ11の開口面に蓋15を被せて、蓋15の雄ネジ21をセンサホルダ11の雌ネジ20にねじ込むと、パッキング19が防塵フィルタ18をガスセンサ6に対して押圧固定する。
本実施形態では、ネジ16等の別部材を用いずに、ガスセンサ6及び防塵フィルタ18を取り付けることができる。
その他の構成は、第2の実施形態とほぼ同様である。
【0019】
【発明の効果】
本発明によれば、ガスセンサの検出面が防塵フィルタで保護されているので、吸収缶を粒子状物質が透過したり、粒子状物質が存在する環境下で吸収缶を交換しても、ガスセンサの検出面が粒子状物質で汚染される心配が無く、経時変化によるガスセンサの故障や検知感度低下を防ぐことが可能であり、この結果、ガスセンサの寿命を延ばすことができる。
また、防塵フィルタは、その外面周縁部に装着されたパッキングによって押圧固定されているので、気密性が高くて防塵フィルタの下流側へ粒状物質が侵入しにくい。
さらに、防塵フィルタが汚れた場合には、パッキングを外すだけで簡単に防塵フィルタを交換することができる。
【図面の簡単な説明】
【図1】 第1の実施形態に係るガスセンサ部分の断面図
【図2】 第1の実施形態に係るガスセンサ部分の平面図
【図3】 ガスセンサ付き防毒マスクの吸収缶を外した時の正面図
【図4】 同上の側面図
【図5】 ガスセンサ付き防毒マスクの斜視図
【図6】 第2の実施形態に係るガスセンサ部分の分解斜視図
【図7】 第3の実施形態に係るガスセンサ部分の分解斜視
【符号の説明】
1 面体
2 吸収缶
3 ベルト
4 吸収缶嵌合筒
5 吸気口
6 ガスセンサ
7 警報装置
8 回路部
9 回路部装着用アダプタ
10 センサケース
11 センサホルダ
12 透孔
13 基盤
14 Oリング
15 蓋
16 ネジ
17 貫通孔
18 防塵フィルタ
19 パッキング
20 雌ネジ
21 雄ネジ
22 ネジ溝
23 締め付けリング
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gas sensor-equipped gas mask provided with a gas sensor that detects breakthrough of toxic gas from an absorption can.
[0002]
[Prior art]
In a gas mask in which toxic gas contained in the air is collected by an absorption can and clean air that has passed through the absorption can flow into the face, if the absorption capacity of the absorption can decreases, harmful gas breakthrough may occur. There is a risk that the wearer may intoxicate by inhaling toxic gas that has reached the body.
In order to prevent such an accident, a gas mask that is provided with a sensor that detects breakthrough of the absorption canister and issues a warning when the sensor detects toxic gas to notify the time for replacement of the absorption canister is known (patent) Reference 1 and Patent Document 2).
However, since the sensors installed in these conventional gas masks are intended only for gas detection, in an environment where particulate matter coexists, such as painting work, particles that have passed through the absorption canister. The surface of the sensor is contaminated by the particulate matter, and failure and sensitivity reduction are likely to occur.
[0003]
In addition, if a dustproof filter with high collection performance (see Patent Document 3) is built in the absorption can, the particulate matter hardly transmits, and the possibility that the sensor is contaminated by the particulate matter is low.
However, even if an absorption can with a dustproof filter is replaced in an environment where particulate matter is present, the sensor is exposed to the risk of contamination, so replacement in a clean environment is compelling. It was.
Furthermore, a technique for covering and protecting a gas sensor with a dustproof filter is also known (see Patent Document 4).
However, in this case, since the box-shaped dustproof filter is placed at a distance from the gas sensor, the shape of the dustproof filter itself is complicated and the replacement is troublesome.
[0004]
[Patent Document 1]
JP-A-57-131458 [Patent Document 2]
JP-A-9-196830 [Patent Document 3]
JP 2000-288105 A [Patent Document 4]
Japanese Utility Model Publication No. 7-32559
[Problems to be solved by the invention]
The present invention protects the gas sensor from particulate matter that has passed through the absorption canister, and does not contaminate the gas sensor even if the absorption canister is replaced in an environment where particulate matter is present. It is an object of the present invention to provide a gas sensor-equipped gas mask that can prevent a drop and that allows easy replacement of a dust filter.
[0006]
[Means for Solving the Problems]
The gas sensor-equipped gas mask of the present invention has an absorbent can fitting cylinder formed on a face piece, which is detachably mounted with an absorbent can for collecting toxic gas, and is attached to the face piece on the downstream side of the absorbent can. mounting the sensor holder end surface is opened facing, accommodating a gas sensor for detecting toxic gas breakthrough from the canister to the inside of the sensor holder, capped with a through-hole in the end face of the opening of the sensor holder, A dustproof filter is detachably installed between the lid and the gas sensor so as to cover the through hole of the lid and the detection surface of the gas sensor, and a packing that is detachably attached to the outer peripheral edge of the dustproof filter. The dust filter is pressed and fixed by the lid.
[0007]
The particulate matter is filtered with a dust filter to prevent the particulate matter from adhering to the detection surface of the gas sensor.
The gas sensor is stably supported and protected at an appropriate position by the sensor holder and the lid.
When the dustproof filter is contaminated with particulate matter, it can be easily replaced by removing the lid on the sensor holder.
[0008]
The dustproof filter may be pressed and fixed to the gas sensor via the packing.
Said canister fitting tube which the canister is fitted to the front is provided in the face piece, the gas sensor in the back portion of the canister fitting cylinder can also Installation to Rukoto.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 5, the gas mask with a gas sensor of the present invention includes a face body 1 that covers a wearer's nose and mouth, and an absorption can 2 that is detachably attached to the outer surface of the face body 1.
The face body 1 can be attached to the face with a belt 3, and as shown in FIGS. 3 and 4, a circular absorbent can fitting tube 4 is formed on the outer surface thereof.
A screw groove 22 is formed on the outer peripheral surface of the absorption can fitting cylinder 4 (FIG. 4), and the absorption can 2 is fitted inside the absorption can fitting cylinder 4, and a tightening ring 23 is put on the outer surface thereof (FIG. 5). The absorbent can 2 is attached by screwing the thread groove formed on the inner peripheral surface of the tightening ring 23 with the thread groove 22 of the absorbent can fitting tube 4.
[0010]
An intake port 5 communicating with the inner surface of the face piece 1 and a gas sensor 6 for detecting toxic gas are installed on the inner side surrounded by the absorption can fitting cylinder 4, that is, on the downstream side of the absorption can 2.
A circuit unit 8 that houses a circuit board, a battery, and an alarm device 7 is mounted below the face piece 1. Further, the circuit board, battery, and alarm device 7 housed in the circuit unit 8 and the gas sensor 6 installed inside the absorption can fitting cylinder 4 include a circuit unit mounting adapter 9 provided in the lower part of the face piece 1. Are connected by lead wires that pass through.
The gas sensor 6 emits a signal when it detects the toxic gas that broke through the absorption can 2, and the alarm device 7 issues an alarm by sound or light in response to this signal.
As described above, since the gas sensor 6, the lead wire, and the circuit unit 8 are incorporated in the face body 1, the gas mask is reduced in size, and the lead wire is exposed to the outside, and there is no fear of being caught by an object.
[0011]
As shown in FIGS. 1 and 2, the gas sensor 6 is housed in a cylindrical sensor case 10, and the sensor case 10 is housed in a cylindrical sensor holder 11 attached to the face body 1.
The sensor case 10 and the outer end surface of the sensor holder 11 facing the absorption can 2 are opened, and a through hole 12 is formed in the inner end surface of the sensor holder 11.
The sensor case 10 is for facilitating the attachment of the gas sensor 6 and the base 13, and the base 13 and the gas sensor 6 mounted on the bottom outer surface of the sensor case 10 are electrically connected through a hole formed in the sensor case 10. Connected. The hole formed in the sensor case 10 is completely closed by soldering on the base 13 side.
[0012]
The base 13 is provided with a temperature adjusting element so that the temperature in the gas sensor 6 is adjusted.
In addition, an O-ring 14 is interposed between the outer peripheral portion of the base 13 and the bottom surface of the sensor holder 11 to ensure airtightness between the inside and outside of the sensor holder 11.
Further, a lid 15 is detachably attached to the outer surface of the sensor case 10 with two screws 16. The sensor case 10 and the lid 15 are made of plastic and do not require chemical resistance.
[0013]
A through-hole 17 is formed in the center of the lid 15, and a dust filter 18 is loaded between the lid 15 and the gas sensor 6 to close the through-hole 17 of the lid 15 and cover the detection surface of the gas sensor 6. .
The dustproof filter 18 is made of a nonwoven fabric having a thickness of 0.2 to 0.3 mm, and does not require chemical resistance. The dust filter 18 can be a high collection filter for a dust mask, and an electrostatic filter or a mechanical filter can be considered as an example.
[0014]
A rubber packing 19 is detachably interposed between the dust filter 18 and the lid 15 at the peripheral edge of the dust filter 18. The dust filter 18 is pressed and fixed to the gas sensor 6 by the packing 19, and the airtightness between the lid 15 and the dust filter 18 is maintained, so that the detection surface of the gas sensor 6 is not contaminated with particulate matter.
Therefore, even if particulate matter existing in the air passes through the absorption can 2 or is removed in an environment where the particulate matter is present, the detection surface of the gas sensor 6 protected by the dustproof filter 18 is particles. It will not be contaminated with particulate matter.
Further, when the dust filter 18 is contaminated with particulate matter, it can be easily replaced by removing the screw 16 and removing the lid 15 and packing 19.
[0015]
FIG. 6 shows a second embodiment of the present invention.
Without using the sensor case 10, the gas sensor 6 is directly housed in a pressure-resistant plastic sensor holder 11. Then, the detection surface of the gas sensor 6 is covered with a dust filter 18, a packing 19 is interposed between the outer peripheral edge of the dust filter 18 and the lid 15, and the lid 15 is fastened to the sensor holder 11 with screws 16. The dustproof filter 18 is pressed and fixed to the gas sensor 6 with the packing 19.
Since other configurations are substantially the same as those of the first embodiment, detailed description thereof is omitted.
[0016]
FIG. 7 shows a third embodiment of the present invention.
The height of the sensor holder 11 is larger than the height of the gas sensor 6, and a female screw 20 is formed on the inner peripheral surface of the sensor holder 11.
Further, a male screw 21 that is screwed with the female screw 20 of the sensor holder 11 protrudes from the center of the back surface of the lid 15.
The dustproof filter 18 is housed inside the sensor holder 11 so as to cover the detection surface of the gas sensor 6, the packing 19 is applied to the outer peripheral edge of the dustproof filter 18, and the lid 15 is placed on the opening surface of the sensor holder 11. Then, when the male screw 21 of the lid 15 is screwed into the female screw 20 of the sensor holder 11, the packing 19 presses and fixes the dust filter 18 to the gas sensor 6.
In the present embodiment, the gas sensor 6 and the dustproof filter 18 can be attached without using another member such as the screw 16.
Other configurations are substantially the same as those of the second embodiment.
[0019]
【The invention's effect】
According to the present invention, since the detection surface of the gas sensor is protected by the dust filter, even if the particulate matter passes through the absorption canister or is replaced in an environment where the particulate matter is present, There is no concern that the detection surface is contaminated with particulate matter, and it is possible to prevent a gas sensor failure and a decrease in detection sensitivity due to changes over time. As a result, the life of the gas sensor can be extended.
Further, since the dustproof filter is pressed and fixed by the packing attached to the outer peripheral edge portion thereof, the airtightness is high and the particulate matter is difficult to enter the downstream side of the dustproof filter.
Furthermore, when the dustproof filter becomes dirty, the dustproof filter can be easily replaced by simply removing the packing.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a gas sensor portion according to the first embodiment. FIG. 2 is a plan view of the gas sensor portion according to the first embodiment. FIG. 3 is a front view of the gas mask with gas sensor when an absorption can is removed. 4 is a side view of the same. FIG. 5 is a perspective view of a gas mask with a gas sensor. FIG. 6 is an exploded perspective view of a gas sensor portion according to the second embodiment. FIG. 7 is an exploded perspective view of the gas sensor portion according to the third embodiment. Exploded perspective view
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Face body 2 Absorbing can 3 Belt 4 Absorbing can fitting cylinder 5 Intake port 6 Gas sensor 7 Alarm device 8 Circuit unit 9 Circuit unit mounting adapter 10 Sensor case 11 Sensor holder 12 Through hole 13 Base 14 O-ring 15 Lid 16 Screw 17 Through Hole 18 Dustproof filter 19 Packing 20 Female screw 21 Male screw 22 Screw groove 23 Tightening ring

Claims (3)

面体に形成された吸収缶嵌合筒に有毒ガスを捕集する吸収缶を着脱可能に装着し、前記吸収缶の下流側において前記面体に、前記吸収缶に面する端面が開口したセンサホルダを取付け、該センサホルダの内部に前記吸収缶から破過した有毒ガスを検知するガスセンサを収納し、前記センサホルダの開口した端面に貫通孔を有する蓋を被せ、前記蓋と前記ガスセンサとの間に、前記蓋の貫通孔及び前記ガスセンサの検出面を覆うように防塵フィルタを着脱自在に設置し、前記防塵フィルタの外面周縁部に着脱可能に装着されたパッキングを介して、前記防塵フィルタを前記蓋によって押圧固定したことを特徴とするガスセンサ付き防毒マスク。 An absorption can for collecting toxic gas is detachably attached to an absorption can fitting cylinder formed on a face piece, and a sensor holder having an end face facing the absorption can opened on the face piece on the downstream side of the absorption can. mounting, houses a gas sensor for detecting toxic gas breakthrough from the canister to the inside of the sensor holder, capped with a through-hole in the end face of the opening of the sensor holder, between the lid and the gas sensor The dustproof filter is detachably installed so as to cover the through hole of the lid and the detection surface of the gas sensor, and the dustproof filter is attached to the lid via a packing removably attached to the outer peripheral edge of the dustproof filter. A gas mask with a gas sensor, wherein the gas mask is fixed by pressing. 前記パッキングを介して、前記防塵フィルタを前記ガスセンサに対して押圧固定した請求項1に記載のガスセンサ付き防毒マスク。  The gas sensor-equipped gas mask according to claim 1, wherein the dust filter is pressed and fixed to the gas sensor through the packing. 前記面体の前面に前記吸収缶が嵌合される吸収缶嵌合筒を設け、該吸収缶嵌合筒の奥部に前記ガスセンサを設置した請求項1又は2に記載のガスセンサ付き防毒マスク。  The gas mask with a gas sensor according to claim 1 or 2, wherein an absorption can fitting cylinder into which the absorption can is fitted is provided on the front surface of the face piece, and the gas sensor is installed in a back portion of the absorption can fitting cylinder.
JP2002310167A 2002-10-24 2002-10-24 Gas mask with gas sensor Expired - Fee Related JP3935817B2 (en)

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GB0423526D0 (en) * 2004-10-22 2004-11-24 Boc Group Plc Protectors
KR102140471B1 (en) * 2019-01-21 2020-08-03 국방과학연구소 Canister for gas mask capable of identifying residual life and measurement kit for indentifying residual life of canister
US20220134147A1 (en) * 2019-02-28 2022-05-05 3M Innovative Properties Company Sensor-enabled wireless respirator fit-test system

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JPS481995Y1 (en) * 1968-07-26 1973-01-19
JPS5346797Y2 (en) * 1976-08-28 1978-11-09
JPS57131458A (en) * 1981-02-04 1982-08-14 Shigetaka Tomokiyo Gas mask with poison removing capacity reduction alarm apparatus
JPH0480554U (en) * 1990-11-27 1992-07-14
JP2535356Y2 (en) * 1992-11-27 1997-05-14 関西電力株式会社 Combustible gas detector Gas sensor poisoning prevention filter
JP3566821B2 (en) * 1995-11-14 2004-09-15 株式会社リコー Solid collection device
DE50014087D1 (en) * 1999-03-17 2007-04-05 T E M Techn Entwicklungen Und METHOD AND SENSOR DEVICE FOR DETECTING GASES OR VAPORS CONTAINED IN AIR
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JP4245266B2 (en) * 2000-10-03 2009-03-25 株式会社重松製作所 Gas mask with an absorber can time detection device
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