CN110559566A

CN110559566A - Dust-proof mask

Info

Publication number: CN110559566A
Application number: CN201810573224.XA
Authority: CN
Inventors: 郑贞大
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-06-06
Filing date: 2018-06-06
Publication date: 2019-12-13

Abstract

The invention relates to a dust mask mainly used in an industrial field. The dust mask of the present invention comprises: a three-dimensional filter body; a three-dimensional orthopedic device which is arranged in the detachable way. In particular, in the present invention, the orthosis comprises: a support body which is made of non-woven fabric, is harder than the filter body, has a loose air-permeable tissue structure and can absorb moisture generated by the breath of a user; a nose bridge pressing means transversely attached to an outer upper end of the support body, covered by the filter body, and capable of performing a bending adjustment; and the cushion sponge is transversely attached to the position, corresponding to the extrusion tool, of the upper end of the inner surface of the support body. According to the dust mask of the present invention, the fitting force and wearing feeling of the nose portion of the user can be improved, and the moisture generated by breathing can be easily treated.

Description

Dust-proof mask

Technical Field

The present invention relates to a dust mask, and more particularly, to a dust mask which can be conveniently and effectively used by a user in an industrial field work.

Background

In general, since many harmful substances such as dust, dirt, and smoke are distributed in the air in an industrial site, workers use a closed dust mask that can cover the nose and the mouth. The dustproof mask is divided into two types, one type is that the dustproof mask can be semi-permanently used only by replacing the filter from the face body; the other is a filter which is made of the body of the crisp noodles and is discarded after being used for one time or more. In particular, the latter type is known in the industry as a "face-filtering" dust mask, and all dust masks described below are of this type.

In addition, the nose of the user has a shape with a sharply protruding curved structure in terms of human body structure, and the size and shape of each person are slightly different. Therefore, the dust mask produced by sizing cannot be tightly attached to the nose part of a user, and a space is easily generated. In this case, the harmful material is directly introduced into the respiratory organ through the space. To solve this problem, there are 2 options.

one solution is to attach a so-called "nose bridge pressing tool" to the dust mask. For example, fig. 1 shows a dust mask proposed in korean registered utility model publication No. 0179830, and this dust mask 1 includes: a generally hemispherical filter body 2; a headband 3 for wearing the filter body 2. On the upper side of the outer side surface of the filter body 2, an iron piece 4 is attached as a nose bridge pressing tool capable of bringing the filter body 2 into close contact with the nose bridge portion of the user.

Here, the bending state of the iron piece 4 can be adjusted according to the size and shape of the nose of the user by pressing with fingers, so that the filter body 2 can be made to be in close contact with the nose bridge of the user. However, this type of dust mask 1 has the following problems: the iron piece 4 is not stable in appearance and structure; secondly, the iron sheet 4 attached to the filter body 2 can cause the loss of the filtering function of the part of the area; the filter body 2 is directly contacted with the breath of a user, hydration occurs quickly, and thus the filtering efficiency is reduced.

Another solution is to provide a so-called "orthosis" on the dust mask. For example, fig. 2 shows a dust mask proposed in japanese laid-open patent publication No. 2003-320041, in which a dust mask 5 is configured by inserting a mesh or mesh-shaped orthosis 7 molded with a plastic resin into a substantially hemispherical filter body 6, and a protruding curved portion 8 having a shape capable of contacting the bridge of the nose of a user is formed on the upper side of the orthosis 7.

Here, the orthosis 7 supports and maintains the circular shape of the filter body 6 while the bent portion 8 corresponds to the nose portion of the user, thereby helping to bring the filter body 6 to the nose bridge portion of the user to some extent. However, this type of dust mask 5 has the following problems: corresponding to a considerable loss in filtering function of the contact area of the orthosis 7 with the filter body 6; the bent part 8 can not flexibly deal with the noses with different sizes and shapes, thereby reducing the close contact with the nose bridge part and the wearing feeling; sixthly, the filter body 6 is directly contacted with the breath of a user, and hydration rapidly occurs, thereby causing the rapid decrease of the filtering efficiency and the rapid increase of the respiratory resistance.

Due to these problems, the first and second types of dust masks 1 and 5 are hardly used in actual industrial fields.

Prior art documents

Korean registered Utility model publication No. 0179830

japanese laid-open patent publication No. 2003-320041

japanese laid-open patent publication No. 2004-242905

Disclosure of Invention

Technical problem to be solved

The present invention has been made to solve the above-mentioned problems occurring in the prior art. An object of the present invention is to provide a dust mask in which a nose bridge pressing tool is configured by a so-called orthosis (shape retaining tool), the configuration of the pressing tool is stable, the orthosis and the pressing tool do not cause a loss of a filter area of a filter body, the orthosis and the pressing tool can be deformed to flexibly cope with noses having different sizes and shapes, a wearing feeling is good, and the orthosis can prevent hydration of the filter body.

Means for solving the problems

The invention relates to a dust mask, the basic structure of which comprises: a filter body which is a three-dimensional type and wraps the periphery of the nose and the mouth of a user; a facing portion which is annular and whose outer peripheral edge is joined to an end of the edge of the filter body; and an orthosis which is a three-dimensional type and is detachably provided inside the filter body, and an edge end of the orthosis is inserted into a joint portion of the filter body and the facing portion.

in particular, here, the orthosis comprises: a support body which is made of water-absorbing non-woven fabric, is harder than the filter body, has a loose air-permeable tissue structure, is in direct contact with the breath of a user, and can absorb moisture generated by the breath; a nose bridge pressing tool made of a material capable of adjusting a curvature formed according to a shape of a nose bridge of a user, transversely attached to an upper end of an outer surface of the support body, and covered by the filter body to prevent the nose bridge pressing tool from being exposed to the outside; and a porous pad sponge transversely attached to the upper end of the inner surface of the support body at a position corresponding to the pressing tool, wherein the pressing tool (18) and the pad sponge (25) clamp the support body (16) in the middle and are arranged opposite to each other.

Preferably, the pressing means may be a rectangular metal sheet or a composite sheet of transverse metal cores inserted into a flexible material.

Effects of the invention

According to the dust mask of the present invention, the support body of the orthosis is made of a nonwoven fabric and is detachably provided. Meanwhile, the extrusion tool is arranged at the upper end of the non-woven fabric support body in a mode of adjusting the curvature, and the extrusion tool is covered by the filter body. In the mask structure of the present invention, the rigidity of the pressing tool and the support is cushioned by a cushion sponge on the inner surface of the support.

With this structure, the dust mask can improve the stability and maintainability of the pressing tool, the close contact with the nose bridge portion, the wearing feeling, and the like. In addition, according to the dust mask of the present invention, most of the moisture generated by the user's breath is absorbed and processed by the supporter of the orthosis before contacting the filter body, thereby having effects of improving dust capture efficiency of the dust mask, preventing rapid increase of inhalation resistance, prolonging the service life of the product, and the like.

Drawings

Fig. 1 is a schematic view of a conventional dust mask.

Fig. 2 is a schematic view of another conventional dust mask.

Fig. 3 is a perspective view of a dust mask according to the present invention.

fig. 4 is an exploded view of fig. 3.

fig. 5 is a sectional view taken along line a-a of fig. 3.

Fig. 6 is a state diagram for use of fig. 3.

Fig. 7 and 8 are schematic views illustrating a method of forming the orthosis shown in fig. 3, respectively.

Description of the reference numerals

10: the dust mask 11: filter body

12: a facing portion 13: orthosis

14: the headband 15: joint part

16: support body 17: v-shaped groove

18: pressing tool 19: main body

20: metal core 21: trace of joint

22: valves 23, 24: sheet

25: sponge cushion

Detailed Description

The features and effects of the "dust mask" of the present invention, which may or may not be mentioned above, will be more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings. In the figures following fig. 3, a dust mask according to the present invention is indicated by reference numeral 10.

Referring to fig. 3 and 5, the dust mask 10 of the present invention includes: a filter body 11 which is a three-dimensional type and wraps the circumference of the nose and mouth of a user; a facing portion 12 having a ring shape and an outer peripheral edge joined to an edge end of the filter body 11; and an orthosis 13 which is a three-dimensional type and is detachably provided inside the filter body 11, and an edge end of the orthosis 13 is inserted into a joint portion 15 of the filter body 11 and the facing portion 12. The filter body 11 is connected at both sides with head bands 14, and the dust mask 10 can be fixed at a proper position on the user's face.

Although the basic structure of such a dust mask is a known structure proposed in Japanese laid-open patent publication No. 2003-320041 and shown in FIG. 2 in this specification, the dust mask 10 of the present invention has its technical features in the specific construction of the below-described orthosis 13.

any known mask filter material that can filter out dust, dirt, and the like in the air can be used as the filter body 11. For example, a structure in which filtration layers of the same kind or different kinds are stacked in plural layers may be employed. The filter body 11 is shaped to form a face space, and has a substantially hemispherical shape. However, since the filter material is flexible, its form is easily broken even by a small pressure or load. Thus, an orthosis 13 for maintaining the form is provided.

The facing portion 12 is a sheet material formed by laminating (laminating) a soft resin such as polyurethane on one surface of a synthetic fiber fabric such as nylon fiber or polyester fiber or a fabric such as cotton. The facing portion 12 may be made of a rubber material such as rubber, silicone, or urethane. However, the sheet material is generally considered to be advantageous if the factors of the tactile sensation or flexibility of the face are taken into consideration. In addition, the attachment portion 12 is formed in a shape of a special ring in consideration of the shape of the bridge of the nose, so that it can flexibly cope with different shapes of users, and has good adhesion.

For the filter body 11 and the facing portion 12, the edge end of the filter body 11 and the outer peripheral edge of the facing portion 12 are integrally joined to each other. As a method of joining, a method such as adhesive, sewing, welding, or the like can be employed. In addition, the orthosis 13 is disposed inside the filter body 11 by inserting the edge end thereof into the engaging portion 15. In the present invention, the orthosis 13 includes: a support body 16 for supporting the entire three-dimensional shape of the filter body 11 and the dust mask 10; a nose bridge pressing tool 18 attached and fixed to the outer upper end of the support body 16.

Specifically, the support body 16 is made of a water-absorbent nonwoven fabric material having a material harder than the filter body 11 and a loose air-permeable structure, the support body 16 is formed in a three-dimensional shape, and the support body 16 is provided so that the outer surface thereof is in contact with the inner surface of the filter body 11, thereby supporting the three-dimensional shape of the entire filter body 11 and the dust mask 10.

In general, a "nonwoven fabric" is formed in a form of a felt or sheet by arranging fibers in parallel or in a non-directional manner and bonding them with a resin binder or by thermal fusion without using a weaving process such as weaving or weaving. The fiber can be polyester, polypropylene, rayon, vinylon, nylon, or other chemical fiber. Such nonwoven fabrics exhibit different physical properties depending on the kind of raw materials used, the thickness of the fibers, the method of forming and bonding, the kind of binder, and the like, and therefore, a desired nonwoven fabric can be selected or produced depending on the purpose and use thereof.

In the present invention, the support body 16 is used to absorb moisture generated by the user's breath while supporting the shape of the filter body 11. Therefore, it is required to have so-called "rigidity" and "water absorption property". However, the support body 16 does not have the function of a filter. Therefore, for example, even if the so-called nonwoven fabric has a dense weave structure or an areal density structure, this leads to a reduction in the air permeability of the dust mask as compared with the filter body 11, thereby increasing the breathing resistance of the user, which is a factor that must be considered. Thus, in the present invention, the support body 16 is defined as: "is made of a water-absorbent nonwoven fabric material which is harder than the filter body 11 and has a loose air-permeable weave structure", and the outer side thereof is in contact with the inner side of the filter body 11.

Preferably, the support body 16 includes a V-shaped groove 17 formed at an upper end of an edge thereof. The V-shaped groove 17 corresponds to the bridge of the nose of the user, so that the filter body 11 can be perfectly fitted to the bridge of the nose of the user. For example, in conventional dust masks 1 and 5 shown in fig. 1 and 2, a protruding bent portion 8 is formed corresponding to the bridge of the nose of the user. In this case, the bent portion 8 excessively covers the nose, thereby causing inconvenience to the user and hindering breathing. In contrast, the V-shaped groove 17 of the present embodiment does not cause inconvenience to the bridge of the nose of the user even if it is closely fitted to the bridge of the nose, and can still breathe freely.

The pressing tool 18 is made of a material capable of adjusting a curvature according to a shape of a bridge of a nose of a user, is transversely attached to an outer upper end of the support body 16, and is covered by the filter body 11 to prevent the pressing tool 18 from being exposed to the outside. That is, the pressing tool 18 is made of a material that can be bent and adjusted according to the size and shape of the bridge of the nose of the user, and the pressing tool 18 is covered by the filter body 11 in a state of being attached to the support body 16. Preferably, the pressing tool 18 is a thin rectangular sheet of metal or composite sheet of metal with a transverse metal core inserted into a flexible material, and may be attached to the support 16 by sewing, adhesive, ultrasonic, heat fusion, or the like.

In the present embodiment, the pressing tool 18 is a composite sheet composed of a main body 19 of flexible rubber or plastic and metal cores 20 inserted respectively to the upper and lower sides thereof, and has advantages of being lighter than a metal sheet, being easily attached, being freely adjustable in bending, and the like. Preferably, the thickness of the middle portion of the main body 19 is made thinner than the upper and lower metal core 20 portions, and it is easier to attach the pressing tool 18 to the support body 16 by various methods using the middle portion. For example, the reference numeral 21 denotes an ultrasonic bonding trace formed in the middle portion of the body 19.

As described above, the support body 16 is rigid and rigid with respect to the filter body 11, and a pressing tool 18 is attached to the outer upper end of the support body. Therefore, when the surface of the support body 16 is directly pressed against the bridge of the nose of the person, the wearing feeling is reduced, and in a more serious case, the bridge portion is peeled or scratched. Therefore, the dust mask 10 of the present invention solves this problem by attaching a porous cushion sponge 25 to the upper end of the inner surface of the support 16 at a position corresponding to the pressing tool 18, and by providing a cushioning effect.

That is, the pressing tool 18 and the cushion sponge 25 are disposed opposite to each other with the support body 16 interposed therebetween. Preferably, the pad sponge 25 is attached laterally the same as the pressing tool 18. In this case, the pad sponge 25 is designed to have a surface area larger than that of the pressing tool 18, so that the opposed pressing tool 18 is located inside the surface area of the pad sponge 25. Otherwise, the opposite effect of the bridge being severely compressed by the edge of the pressing tool 18 may occur.

The reference numeral 22 denotes a valve provided through the filter body 11 and the support body 16 to assist the breathing of the user of the dust mask 10, and is a so-called check-valve (exhaust-only) for allowing air to flow only in one direction. The valve 22 is not necessarily limited to this position, and may be disposed on the left, right, or center, from the perspective of a user wearing the dust mask 10 of the present invention. The symbol "H" is a hole for installing the valve 22.

Referring to fig. 6, the dust mask 10 of the present invention is disposed at a proper position on the face of the user by means of the head bands 14 provided at both sides of the filter body 11. In this case, the V-shaped groove 17 and the pressing tool 18 at the upper end of the support body 16 are disposed on the bridge of the nose of the user. The cushion sponge 25 is disposed inside the support body 16 and the pressing tool 18, and gently presses the nasal bridge skin of the user.

In this state, the user can bend the bridge of the nose according to the size and shape thereof by pressing the pressing tool 18 with the fingers to the left and right uniformly against the bridge of the nose. Thus, the pressing tool 18 can be adjusted to fit the curved shape of different users, and the entire dust mask 10 including the support body 16, the facing portion 12, and the filter body 11 can be completely brought into close contact with the bridge of the nose of the user. In this case, the cushion sponge 25 gently pressurizes the skin of the bridge of the nose of the user, so that the user does not feel a sense of repulsion in wearing.

Moreover, the user can breathe safely. In this case, the moisture produced by breathing is largely already absorbed by the support body 16 of the orthosis 13 before coming into contact with the filter body 11, the support body 16 being separate from the filter body 11, so that the moisture can be disposed of very easily. Therefore, the dust mask 10 of the present invention is hardly damaged or deteriorated in filtering efficiency due to moisture generated by the breathing of the user.

Fig. 7 and 8 show a method of forming the support body 16 in a three-dimensional shape. In the first method, the central portion of the substantially circular nonwoven fabric sheet 23 is pressed by hot pressing to form a substantially hemispherical shape. In the second method, the upper side and the lower side of the nonwoven fabric sheet 24, which is substantially oblong in the vertical direction, are cut at a predetermined length, and the opposing cut pieces are superimposed in the direction crossing each other (see the arrows shown in fig. 8), whereby a three-dimensional shape with a convex center can be formed.

The support body 16 has the same value in the present invention, regardless of the method of any one of the listed methods, as long as it is under the condition defined above, i.e., "it is made of a water-absorbent nonwoven material which is harder than the filter body 11 and has a loose air-permeable weave structure".

Claims

1. A dust mask, comprising: a filter body (11) which is a three-dimensional type and is used for wrapping the periphery of the nose and the mouth of a user; a facing portion (12) which is annular and whose outer peripheral edge is joined to the edge end of the filter body; an orthosis (13) which is a three-dimensional type and is detachably provided inside the filter body, and an edge end of the orthosis (13) is inserted into a joint portion (15) of the filter body and the facing portion,

This dust mask's characterized in that:

The orthosis (13) comprising: a support (16), which is made of water-absorbing non-woven fabric, is harder than the filter body, has a loose air-permeable structure, and absorbs moisture generated by breathing by directly contacting with the breathing of a user; a nose bridge pressing means (18) made of a material capable of adjusting a curvature according to a shape of a nose bridge of a user, the nose bridge pressing means (18) being attached to an upper outer end of the support body (16) in a lateral direction, and the filter body (11) covering the nose bridge pressing means (18) to prevent the nose bridge pressing means (18) from being exposed to the outside; and a porous pad sponge (25) laterally attached to a position corresponding to the pressing tool at the upper end of the inner surface of the support, wherein the pressing tool (18) and the pad sponge (25) are disposed opposite to each other with the support (16) therebetween.

2. The dust mask of claim 1, wherein:

The support body (16) comprises: a V-shaped groove (17) formed at the upper end of the edge thereof corresponding to the bridge of the nose of the user.

3. The dust mask of claim 1, wherein:

The pressing tool (18) is a rectangular metal sheet or a composite sheet formed by inserting a transverse metal core (20) into a body (19) made of a flexible material.

4. The dust mask of claim 1, wherein:

The pressing tool (18) is a composite sheet formed by inserting a transverse metal core (20) into the upper and lower sides of the interior of a main body (19) made of a flexible material, and the composite sheet is adhered to the support body (16) through the middle part of the main body (19) when the thickness of the middle part is smaller than that of the upper and lower metal cores (20).

5. The dust mask of claim 1, wherein:

The support body (16) is three-dimensional through the following two methods:

A method of cutting the upper and lower sides of a sheet (23) having an oblong shape along the upper and lower sides thereof by a predetermined length, and stacking the opposed slices in the direction intersecting each other; alternatively, the first and second electrodes may be,

A method of forming a hemispherical space by thermally pressurizing the central portion of a circular nonwoven fabric sheet (24).

6. The dust mask of claim 1, wherein:

the pad sponge (25) is designed to have a surface area greater than the surface area of the pressing tool (18) so that the opposing pressing tool (18) is located inside the surface area of the pad sponge (25).