JP4666735B2 - Polygon filter for use in respiratory protective equipment - Google Patents
Polygon filter for use in respiratory protective equipment Download PDFInfo
- Publication number
- JP4666735B2 JP4666735B2 JP2000260535A JP2000260535A JP4666735B2 JP 4666735 B2 JP4666735 B2 JP 4666735B2 JP 2000260535 A JP2000260535 A JP 2000260535A JP 2000260535 A JP2000260535 A JP 2000260535A JP 4666735 B2 JP4666735 B2 JP 4666735B2
- Authority
- JP
- Japan
- Prior art keywords
- filter
- case
- polygon
- circular
- peripheral surface
- 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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- Respiratory Apparatuses And Protective Means (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Description
【0001】
【発明の属する技術分野】
本発明は呼吸用保護具に使用する多角形フィルタに関する。
【0002】
【従来技術】
呼吸用保護具は、防塵マスク、防毒マスクのように浮遊粉塵や有毒ガスの人体に有害な環境下での作業に際して着用され、作業者が有害な粉塵やガスを吸い込まないように工夫されている。そして、これに使用されるフィルタは、このような有害な環境下において、清浄な空気の呼吸を保証するために設けられており、濾紙や濾布等のろ過材を折り畳んで作られている。このフィルタはケース内に組み込まれた状態で使用するものと、ケースに入っていない状態のまま使用するものとがある。ケース内に入っていないものはフィルタ単体のまま使用するものであり、それ自体では強度が弱く、変形などを起こしやすく、また有効濾過面積の拡大にも限度があった。従って、フィルタをケース内に組み込んで使用する場合が多い。
【0003】
フィルタをケース内に組み込む方法としては、フィルタの側面をケースに挟み込んだり、或いはフィルタの側面をシールしたりしている。フィルタの側面をシールする方法は、フィルタを円形に切断した後、円形のケースまたは型(以下、いずれの場合も単にケースという)に入れ、ケースとフィルタとの隙間にシーリング剤を注入して一体とするのであるが、その際、フィルタを回転させながらシーリング剤を注入している。このとき、中に入れたフィルタが、中心から動かないように、また、フィルタとケースの間、シーリング剤が流れ込む隙間が、一定にできるように、また、回転によってフィルタが中心からずれるのを防止するためフィルタを接着剤等でケースに固定している。しかしながら、このような方法ではフィルタをケースに合うように円形に切断しなければならず、また、フィルタを接着剤で固定すると有効ろ過面積の減少により通気抵抗が上昇するなどという問題点があった。
【0004】
【発明が解決しようとする課題】
本発明者は、上記の問題点を解決するために、接着剤等を使用せずにフィルタとケースが一定間隔になるようにフィルタを固定すると共にフィルタを円形に切断することのない方法について種々検討した結果、本発明を完成したもので、本発明の目的は接着剤を使用せずに、フィルタとケースが一定間隔になるようにフィルタを固定させシーリング剤の注入がたやすく、また、ケースに合うようにフィルタを円形に切断することなく、製造工程が容易な多角形フィルタを提供することを目的とする。
【0005】
【課題を解決するための手段】
本願発明の要旨は、円形ケースと、該ケース内に収納したフィルタとよりなる呼吸保護具用多角形フィルタであって、前記多角形フィルタの頂点が円形ケースの内周面に接するようにフィルタを多角形に切断して円形ケース内に収納し、接着剤を使用することなく固定させ、円形ケース内周面とフィルタの側面との隙間にシーリング剤を注入して一体としたことを特徴とする呼吸保護具用多角形フィルタである。
即ち、本発明はフィルタを円形のケースに入れて側面をシールする場合、多角形の頂点がケースの内周面に接するようにフィルタをあらかじめ多角形に加工したものを使用し、これをケース内に入れると、多角形に加工されたフィルタの頂点はケースの内周面に接するので、フィルタはケースの中心に固定される。そして、円形のケースと多角形の辺の隙間ができるので、そこにシーリング剤を流し込み、シールされる。
【0006】
【発明の実施の形態】
本発明について詳細に述べる。
本発明における呼吸用保護具とは、作業者が有害な粉塵を吸い込まないように工夫された防塵マスクをいい、また、これに使用するフィルタはこのような有害な環境下において、清浄な空気の呼吸を保証するために設けられたろ紙等をいう。 そして、本発明はこのフィルタを多角形に切断する。多角形としては特に限定はなく、通常四角形〜多角形の何れでもよいが、作業性及びケースの内周面に接して固定しやすさから八角形が好ましい。その際、多角形の頂点がケースの内周面に接するように切断する。ケース内周面に接するとは全ての多角形の頂点がケース内周面に接する必要は無く要はフィルタが固定できればよいのである。
フィルタの側面とケースの内周面との隙間へのシーリング剤の注入は、従来の場合と何ら変わらず、シーリング剤を注入、ケースを回転させることにより行い、また、シーリング剤は従来より使用されているものが使用できる。
【0007】
【実施例】
本発明の実施例として図面をもって具体的に説明する。
図1はろ過材を折り畳んだフィルタを示す。このフィルタを、例えば隅部を切断して八角形に加工する(図2参照)。次いでこの八角形フィルタを円形ケースに入れる(図3参照)。その際、円形ケースの内周面に、フィルタの頂点が接する様にすることでフィルタは固定される。しかる後、円形のケースと、八角形の辺の間にできる隙間に、シーリング剤をかたよりなく流し込み、フィルタの側面をシールする(図4参照)。
【0008】
【発明の効果】
以上述べたように、本発明はろ過材に使用するフィルタを、あらかじめ多角形に加工しておくことで、フィルタを接着剤などで固定せずに、容易にフィルタをシールすることができ、シーリング剤を注入するためにケースを回転させても、フィルタをケースの中心に固定することが出来た。また、円形のフィルタを使用するより、少ないフィルタの使用量で、同性能のフィルタを得ることができた。
【図面の簡単な説明】
【図1】折り畳んだフィルタを示す。
【図2】図1のフィルタを正八角形に切断した状態を示す。
【図3】図2のフィルタをケースに収納した状態を示す。
【図4】図3のフィルタをシールした状態を示す。
【符号の説明】
1 フィルタ 2 円形ケース 3 フィルタ頂点
4 隙間 5 シーリング剤[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a polygonal filter used for a respirator.
[0002]
[Prior art]
Respirators are worn when working in environments that are harmful to the human body of airborne dust and toxic gases, such as dust masks and gas masks, and are designed to prevent workers from inhaling harmful dust and gases. . And the filter used for this is provided in order to guarantee the breath of clean air in such a harmful environment, and is made by folding filter materials, such as a filter paper and a filter cloth. This filter may be used in a state where it is incorporated in the case, or may be used while not in the case. Those which are not contained in the case are used as a filter alone, and as such, are weak in strength, easily deformed, and there is a limit to the expansion of the effective filtration area. Therefore, the filter is often used by being incorporated in the case.
[0003]
As a method for incorporating the filter into the case, the side surface of the filter is sandwiched in the case, or the side surface of the filter is sealed. The method for sealing the side of the filter is to cut the filter into a circular shape, then place it in a circular case or mold (hereinafter simply referred to as the case), and inject a sealing agent into the gap between the case and the filter At that time, the sealing agent is injected while rotating the filter. At this time, so that the filter placed inside does not move from the center, and the gap where the sealing agent flows between the filter and the case can be made constant, and the filter is prevented from being displaced from the center by rotation. Therefore, the filter is fixed to the case with an adhesive or the like. However, in such a method, the filter has to be cut into a circle so as to fit the case, and when the filter is fixed with an adhesive, there is a problem that the ventilation resistance increases due to a decrease in the effective filtration area. .
[0004]
[Problems to be solved by the invention]
In order to solve the above-mentioned problems, the present inventor has various methods for fixing the filter so that the filter and the case are spaced apart without using an adhesive or the like and without cutting the filter into a circle. As a result of the study, the present invention has been completed. The object of the present invention is to facilitate the injection of a sealing agent by fixing the filter so that the filter and the case are at a fixed interval without using an adhesive. It is an object of the present invention to provide a polygonal filter that can be easily manufactured without cutting the filter into a circle so as to meet the requirements.
[0005]
[Means for Solving the Problems]
SUMMARY of the present invention, a circular case, a polygonal filter respirator made more and storage the filter in the casing, the vertex of the polygon filter filters so as to contact the inner circumferential surface of the circular casing It is cut into polygons, stored in a circular case, fixed without using an adhesive, and a sealing agent is injected into the gap between the inner peripheral surface of the circular case and the side surface of the filter, and is integrated. polygonal filter respirator.
That is, in the present invention, when the filter is put in a circular case and the side is sealed, the filter is processed into a polygon in advance so that the vertex of the polygon is in contact with the inner peripheral surface of the case. In this case, the vertex of the filter processed into a polygon contacts the inner peripheral surface of the case, so that the filter is fixed to the center of the case. And since the clearance of a circular case and a polygonal side is made, a sealing agent is poured there and it seals.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail.
The respirator in the present invention refers to a dust mask designed to prevent workers from inhaling harmful dust, and the filter used for this is clean air in such a harmful environment. It refers to filter paper provided to ensure breathing. The present invention cuts this filter into polygons. The polygon is not particularly limited, and may be any of a square to a polygon, but an octagon is preferable from the viewpoint of workability and ease of fixing in contact with the inner peripheral surface of the case. At that time, the polygon is cut so that the vertex of the polygon is in contact with the inner peripheral surface of the case. To contact the inner peripheral surface of the case does not require that the vertexes of all the polygons touch the inner peripheral surface of the case.
Injection of the sealing agent into the gap between the side of the filter and the inner peripheral surface of the case is not different from the conventional case, it is performed by injecting the sealing agent and rotating the case, and the sealing agent is conventionally used. You can use what you have.
[0007]
【Example】
Embodiments of the present invention will be specifically described with reference to the drawings.
FIG. 1 shows a filter in which a filter medium is folded. For example, the filter is processed into an octagon by cutting a corner (see FIG. 2). Next, the octagonal filter is put in a circular case (see FIG. 3). At this time, the filter is fixed by making the apex of the filter contact the inner peripheral surface of the circular case. After that, the sealing agent is poured into the gap formed between the circular case and the octagonal side as much as possible to seal the side surface of the filter (see FIG. 4).
[0008]
【The invention's effect】
As described above, according to the present invention, the filter used for the filter medium is processed into a polygon in advance, so that the filter can be easily sealed without fixing the filter with an adhesive or the like. Even if the case was rotated to inject the agent, the filter could be fixed at the center of the case. Moreover, the filter of the same performance was able to be obtained with the usage amount of a small filter rather than using a circular filter.
[Brief description of the drawings]
FIG. 1 shows a folded filter.
FIG. 2 shows a state where the filter of FIG. 1 is cut into a regular octagon.
3 shows a state in which the filter of FIG. 2 is housed in a case.
FIG. 4 shows a state in which the filter of FIG. 3 is sealed.
[Explanation of symbols]
1 Filter 2 Circular Case 3 Filter Apex 4 Clearance 5 Sealing Agent
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000260535A JP4666735B2 (en) | 2000-08-30 | 2000-08-30 | Polygon filter for use in respiratory protective equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000260535A JP4666735B2 (en) | 2000-08-30 | 2000-08-30 | Polygon filter for use in respiratory protective equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2002065880A JP2002065880A (en) | 2002-03-05 |
JP4666735B2 true JP4666735B2 (en) | 2011-04-06 |
Family
ID=18748527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000260535A Expired - Fee Related JP4666735B2 (en) | 2000-08-30 | 2000-08-30 | Polygon filter for use in respiratory protective equipment |
Country Status (1)
Country | Link |
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JP (1) | JP4666735B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4674064B2 (en) * | 2004-07-27 | 2011-04-20 | ニッタ株式会社 | Method for manufacturing circular filter |
DE102015014017B4 (en) * | 2015-10-30 | 2021-02-18 | Dräger Safety AG & Co. KGaA | Particulate filters and processes for their manufacture |
DE102021117356B4 (en) | 2020-07-16 | 2024-01-11 | Dräger Safety AG & Co. KGaA | Pleated filter element and its use, filter and method for producing the filter element and the filter |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6279827A (en) * | 1985-10-03 | 1987-04-13 | Toyo Roki Seizo Kk | Air cleaner element |
JPH01179725U (en) * | 1988-06-01 | 1989-12-25 | ||
JPH04310202A (en) * | 1991-04-08 | 1992-11-02 | Toyo Roki Seizo Kk | Filter element and manufacture thereof |
-
2000
- 2000-08-30 JP JP2000260535A patent/JP4666735B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6279827A (en) * | 1985-10-03 | 1987-04-13 | Toyo Roki Seizo Kk | Air cleaner element |
JPH01179725U (en) * | 1988-06-01 | 1989-12-25 | ||
JPH04310202A (en) * | 1991-04-08 | 1992-11-02 | Toyo Roki Seizo Kk | Filter element and manufacture thereof |
Also Published As
Publication number | Publication date |
---|---|
JP2002065880A (en) | 2002-03-05 |
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