KR102325079B1 - Multi-purpose dust proof mask - Google Patents

Abstract

The present invention relates to a multi-purpose anti-vibration mask, in which an upper reinforcing rib is formed on the upper side of the front surface of the mask to keep the shape of the mask constant. The original shape of the mask can be maintained for a long time, and it can be used universally in the outdoor for leisure, chemical plants, or work sites where metal powder and welding fumes are generated, thereby reducing safety accidents and improving the health and hygiene of the wearer. Since it has a certain space inside and protrudes to the front, it does not come into contact with the wearer's mouth, making it more hygienic.
In addition, the dust mask of the present invention is formed in a shape that gradually narrows in width from the center of the front to both sides and is formed in a streamlined shape, has a beautiful appearance and is in close contact with the face, does not impede the wearer's activity, and has resistance to wind. It has no effect.
In addition, the dust mask of the present invention can be closely adhered to the face to increase the anti-vibration effect, and when the wearer exhales, the gas generated inside the dust mask is quickly discharged to the outside by the exhaust valve assembly, so that even if the dust mask is worn, breathing Because it does not hinder the air, breathing is easy and fogging can be effectively prevented.

Description

Multipurpose dust mask {MULTI-PURPOSE DUST PROOF MASK}

The present invention relates to a dust mask used for special purposes in various fields, and more specifically, the dust mask can be in close contact with the face to increase the anti-vibration effect, and the gas generated inside the mask when the wearer exhales is discharged by an exhaust valve By quickly discharging to the outside by the assembly, it does not interfere with breathing even when wearing a dust mask, so breathing is easy and fogging can be effectively prevented. In particular, by always maintaining the shape of the flat part where the goggles are mounted and keeping it flat, the original shape of the dust mask can be maintained for a long time. Because it can be used universally, it can reduce safety accidents and improve the health and hygiene of the wearer. it's about

A general dust mask is used throughout the industry. For example, to protect the health of workers in chemical factories that emit toxic gas, metal smelting sites where metal powder and welding fumes are generated, or paper-related or textile factories, etc. It is worn a lot.

In addition, in semiconductor laboratories where dust generation should be extremely limited, dust masks are used to create a clean workspace for product quality rather than wearer's health.

On the other hand, in our daily life, we wear a dust mask a lot. Recently, a lot of yellow dust wind blows from China in the spring, so a yellow dust warning is issued, so we wear a lot of dust masks in the spring. is a trend, and the general public also wears it a lot for health reasons.

A conventional dust mask includes a mask body made of a nonwoven fabric that can cover and cover the mouth and nose at the same time and has a filtering function, and is attached to the outer upper part of the mask body and is shaped by an external force so that the mask body can adhere along the contour of the nose. It consists of an arbitrarily deformable shape adjusting plate, a sponge attached to the inner upper part of the mask body and contacting the bridge of the nose to block the gap, and a hanging band connected to both sides of the mask body and elastically fixed to the head or ears.

However, the conventional dust mask does not have a function to freely adjust the length of the hanging band, so it is very inconvenient to wear, and it is very difficult to maintain the shape of the mask body in its original state.

In addition, there is a problem that the adhesion rate of the dust mask is low, so that the function as the dust mask cannot be fully performed.

Domestic Publication No. 10-2007-0042720

According to the present invention, the dust mask is in close contact with the face to increase the anti-vibration effect, and when the wearer exhales, the gas generated inside the mask is quickly discharged to the outside by the exhaust valve assembly, thereby preventing breathing difficulties even when wearing the dust mask. It is intended to provide a multi-purpose dust mask that is easy to breathe and can effectively prevent fogging.

In addition, according to the present invention, the upper reinforcing rib is formed on the upper side of the front side of the mask to keep the shape of the mask constant. It can be used universally in the outdoor for leisure, chemical factories, work sites where metal powder and welding fumes are generated, etc., so it can reduce safety accidents and improve the health and hygiene of the wearer, and Since it has a shape that protrudes from the front, it is intended to provide a hygienic, multi-purpose dust mask that does not come into contact with the wearer's mouth.

In addition, the present invention integrally forms a hanging band mounting part on one side of the exhaust discharge valve assembly to adjust the length of the hanging band using the hanging band mounting part according to the physical skeletal condition of the wearer, but the band hook of a cutout structure It is intended to provide a multi-purpose dust mask that is very convenient to adjust the length of the hanging band as the hanging band can be flexibly adjusted by one side.

In order to achieve the above object, the present invention is configured to cover the wearer's nose and mouth and to be in close contact with the chin to cover the face, but has a certain space inside so that the wearer's mouth does not contact, and is formed in a shape protruding to the front, a mask body in which an air intake grill for sucking outside air is formed on the front side; an exhaust discharge valve assembly installed on both sides of the mask body to discharge the exhaust generated inside the mask body to the outside of the mask body when the wearer exhales; a filter detachably installed on the inner surface of the mask body to block harmful substances contained in the air flowing into the mask body through the air intake grill and to purify the air; and hanging bands disposed on both sides of the mask body to wear the mask body,

A filter fixing part for fixing the position of the filter is formed on an inner side of the mask body, a goggle mounting plane part for mounting goggles is formed on an upper upper surface of the mask body, and goggles are formed on a bottom surface of the goggles mounting plane part A goggle mounting bracket for alternatively mounting the

In addition, the exhaust discharge valve assembly is coupled to the mask body through mounting holes formed on both sides of the mask body, and has an exhaust discharge hole for discharging the exhaust generated inside the mask body to the outside of the mask body exhaust valve body; an exhaust valve membrane installed in the exhaust valve body to open the exhaust exhaust hole only when exhaust is discharged; And coupled with the exhaust valve body from the outside of the mask body through the mounting hole, one side is provided with an opening for discharging the exhaust discharged through the exhaust discharge hole, the other side is adjustable in length of the hanging band and an exhaust valve cover formed with a hanger band mounting portion for installation.

In addition, the hanging band mounting portion is formed in a semi-arc shape, and two hook band hook pieces are arranged at regular intervals along the half arc shape, and a length for adjusting the length of the hook band between the two hook band hook pieces. An adjustment groove is formed.

In addition, fitting portions for fitting and covering the end portions of the exhaust discharge valve may be formed on both ends of the front surface of the mask body.

In addition, the goggle mounting bracket includes a body that is in close contact with a bottom surface of the goggles mounting plane, and coupling protrusions formed on both upper surfaces of the body,

The coupling protrusion is exposed upward through the protrusion through-hole formed on the flat surface for mounting the goggles, and the coupling protrusion is engaged in the coupling groove formed on the lower surface of the goggles to selectively mount the goggles on the flat surface for mounting the goggles. It can be configured to

In addition, the air intake grill may be formed in multiple stages, and an air inclined guide surface may be formed on the air intake grill to guide sucked air into the mask body.

In addition, the filter fixing portion side filter fixing pieces formed at both ends of the mask body; a lower filter fixing piece formed at a lower end of the mask body; and an upper filter fixing piece formed on a bottom surface of the goggle mounting plane and covering the goggle bracket so as not to contact the wearer's skin.

In addition, the filter is manufactured by ultrasonic fusion method of the inner filter and the outer filter, and is in close contact with the inside of the mask body to maintain a certain space inside so that the wearer's mouth does not come into contact and has a shape that protrudes to the front.

As described above, the upper reinforcing rib is formed on the upper side of the front surface of the mask to keep the shape of the mask constant. It can be used universally, such as outdoors for leisure, in chemical plants, or at work sites where metal powder and welding fumes are generated, so it can reduce safety accidents, improve the health and hygiene of the wearer, and save a certain space inside. Because it has a shape that protrudes from the front, it is more hygienic as it does not come into contact with the wearer's mouth.

In addition, the dust mask of the present invention is formed in a shape that gradually narrows in width from the center of the front to both sides and is formed in a streamlined shape, has a beautiful appearance and is in close contact with the face, does not impede the wearer's activity, and has resistance to wind. It has no effect.

In addition, since the dust mask of the present invention is in close contact with the face to increase the anti-vibration effect, and the gas generated during exhalation is rapidly discharged to the outside by the exhaust valve assembly, even if the dust mask is worn, it does not interfere with breathing. It is easy to breathe and can effectively prevent fogging.

In addition, it is possible to quickly put on the dust mask in case of an emergency (for example,

In the event of a safety accident in which toxic gas leaks into the air), it is possible to quickly protect workers from safety accidents by minimizing the time to wear a dust mask, thereby increasing reliability and safety.

In addition, since the mask body is made of eco-friendly materials such as synthetic resin (thermoplastic elastomer, silicone) with excellent resilience and shock absorption, it can be compressed to reduce the volume when not in use, making it easy to carry or store. Because it is restored to its original form, it is very convenient to use, and the risk of bacterial propagation is low due to low water absorption, making it hygienic.

In addition, the hanging band mounting part is integrally formed on one side of the exhaust discharge valve assembly to adjust the length of the hanging band using the hanging band mounting part according to the wearer's physical skeletal condition, for example, the size of the head or face, but cut It is very convenient to adjust the length of the hanging band as the hanging band can be flexibly adjusted by the (切開) structure of the band hook.

1 is a front perspective view showing a multi-purpose dust mask of the present invention;
2 and 3 are front views showing a multi-purpose dust mask of the present invention.
Figure 4 is a rear perspective view showing a multi-purpose dust mask of the present invention;
5 is a rear view showing a multi-purpose dust mask of the present invention;
6 is a front perspective view showing the mask body and the exhaust valve assembly of the present invention;
7 is a rear perspective view showing the mask body of the present invention;
8 is a perspective view showing the goggle mounting bracket of the present invention;
9 is a front exploded perspective view showing an exhaust valve assembly of the present invention;
10 is a rear exploded perspective view showing an exhaust valve assembly of the present invention;
11 is a perspective view showing the exhaust valve body in the exhaust valve assembly of the present invention;
12 is a perspective view showing a hanger band mounting portion in the exhaust valve assembly of the present invention;
13 is a perspective view showing a filter of the present invention;
14 and 15 are a front view and a side view showing wearing a multi-purpose dust mask of the present invention;

Hereinafter, with reference to the accompanying drawings, a multi-purpose dust mask of the present invention will be described in detail.

Referring to the above drawing, the multi-purpose dust mask of the present invention covers the wearer's nose and mouth and is in close contact with the chin to cover the face, the mask body 110, the exhaust discharge valve assembly 120 for discharging exhaust , a filter 130 for filtering harmful substances, and a hanging band 140 for hanging on the wearer's ear or neck.

Here, exhaust is defined as a concept including a gas generated in the space inside the mask body 110 and a gas containing moisture when exhaling.

To elaborate on the configuration of the present invention, the mask body 110 covers the wearer's nose and mouth and is configured to cover the face by being in close contact with the chin, but has a certain space inside so that the wearer's mouth does not touch the front ( It has a shape that protrudes from the front), and is formed in a shape that gradually narrows in width from the center of the front to both sides. is composed Since the mask body 110 is made of an eco-friendly material such as synthetic resin (thermoplastic elastomer, silicone) with excellent resilience and shock absorption, it can be compressed to reduce the volume when not in use, making it easy to carry or store. As it is restored as it is, it is very convenient to use, and the risk of bacterial propagation is low due to low water absorption, making it hygienic.

An air intake grill 111 for sucking in external air is formed on the front surface of the mask body 110 . The air intake grill 111 may be formed to be long in the horizontal direction. The shape or direction of the air intake grill 111 is not limited to this embodiment, and may be variously modified.

The air intake grill 111 may be formed in multiple stages, and an air inclined guide surface 111a may be formed on the air intake grill 111 to guide the intake air into the mask body 110 .

A bending portion 111b is formed in the middle of the air intake grill 111 so that the shape of the air intake grill 111 can be maintained without deformation even when the plurality of air intake grills 111 are pressed up and down.

Fitting portions 115 for fitting and covering end portions 123c (refer to FIG. 9 ) of an exhaust valve cover 123 to be described later may be formed at both ends of the front surface of the mask body 110 . The fitting portion 115 is formed in a pocket shape, and the end portion 123c of the exhaust valve cover 123 is fitted in the fitting portion 115 so that the exhaust valve cover 123 is in close contact with the front surface of the mask body 110 . can make it happen

A filter fixing part 112 for fixing the position of the filter 130 is formed on the inner side of the mask body 110 .

The filter fixing part 112 includes side filter fixing pieces 112a formed at both ends of the mask body 110; a lower filter fixing piece (112b) formed at the lower end of the mask body (110); and an upper filter fixing piece 112c formed on the bottom surface of the goggles mounting flat part 113 and covering the goggles bracket 150 so as not to contact the wearer's skin.

The side filter fixing piece 112a, the lower filter fixing piece 112b, and the upper filter fixing piece 112c may be formed of a thin film, and the filter 130 is formed by holding the end (edge) of the filter 130 . Do not move arbitrarily.

The lower filter fixing piece 112b is formed to be long and is in close contact with the wearer's chin to seal the inside of the mask body 110 to prevent harmful substances from entering the mask body 110, and to make it soft and elastic to the wearer's chin. It has the effect of preventing skin troubles in advance by contacting the skin.

In addition, on the upper upper surface of the mask body 110, a goggles mounting plane part 113 for mounting goggles 20 (refer to FIG. 5) is formed, and on the bottom of the goggles mounting plane part 113, goggles 20 are optional. A goggles mounting bracket 150 may be installed for mounting as an enemy.

An upper reinforcing rib 114 is formed on the front upper side of the mask body 110 to keep the shape of the mask body 110 constant, and in particular, the shape of the goggles mounting plane 113 is always constant , to keep it flat.

That is, in order to mount the goggles 20 on the goggles mounting plane part 113, it is necessary to withstand the load of the goggles 20, and to put the goggles 20 in the correct position even while the wearer is working or performing activities such as exercise. For this, the shape of the goggles mounting plane part 113 should always be kept constant.

A sealing member 117 for blocking a gap between the wearer's nose and face, for example, a sponge or a rubber sheet, may be attached to the bottom of the goggle mounting plane part 113 . The sealing member 117 prevents harmful substances from flowing into the mask body 110 and prevents skin troubles.

In addition, the exhaust discharge valve assembly 120 is installed on both sides of the mask body 110 to discharge the exhaust generated inside the mask body 110 to the outside of the mask body 110 when the wearer exhales.

The exhaust discharge valve assembly 120 penetrates the mounting holes H formed on both sides of the mask body 110 and is coupled to the mask body 110 , and exhausts generated inside the mask body 110 into the mask body 110 . ) exhaust valve body 121 having an exhaust discharge hole (121a) for discharging to the outside; an exhaust valve membrane 122 installed in the exhaust valve body 121 to open the exhaust discharge hole 121a only when exhaust is discharged; And coupled to the exhaust valve body 121 from the outside of the mask body 110, one side is provided with an opening (123a) for discharging the exhaust discharged through the exhaust discharge hole (121a), the other side is provided with a hanging band (140) ) is provided with an exhaust valve cover 123 in which a hanging band mounting part 124 for installing the length adjustable is formed.

When describing the configuration of the exhaust discharge valve assembly 120 in more detail, the exhaust valve body 121 includes a cylindrical portion 121A and a flange portion 121B. The cylindrical portion 121A passes through the mounting holes H formed on both sides of the mask body 110 , and a coupling protrusion 12 is formed on an outer circumferential surface of the cylindrical portion 121A.

A rib (R) is formed in the cylindrical portion (121A), and an exhaust discharge hole (121a) is provided between the ribs (R). A fixing protrusion 13 for fixing the exhaust valve membrane 122 is formed at the center of the rib R. That is, the fixing protrusion 13 is fitted into the coupling hole 122a of the exhaust valve membrane 122 so that the exhaust valve membrane 122 is installed. And a ring-shaped protrusion 14 for close coupling is formed on the flange portion 121B.

The exhaust valve film 122 may be formed of a thin rubber film, and is configured to be flexible and bendable. That is, the exhaust valve membrane 122 is installed in the exhaust valve body 121 to open the exhaust discharge hole 121a by air pressure only when exhaust is discharged.

The exhaust valve cover 123 has a coupling groove 123b formed on its inner circumference to be coupled to the exhaust valve body 121 . That is, the fixing protrusion 13 is configured to be coupled in the coupling groove 123b.

One side of the exhaust valve cover 123 is provided with an opening 123a for discharging the exhaust discharged through the exhaust discharge hole 121a, and the other side of the exhaust valve cover 123 is adjustable in length with a hanging band 140 . A hanger band mounting part 124 for installation is formed. The end portion 123c of the exhaust valve cover 123 may be fitted into the fitting portion 115 as described above.

The hanger band mounting part 124 is formed in a semi-arc shape, and two hook band hook pieces 125 are arranged at regular intervals along the semi-arc shape, and between the two hook band hook pieces 125, a hook band A length adjustment groove 126 for adjusting the length of 140 is formed. Hanging band The hook piece 125 is formed in a cut-out structure and has some elasticity, and serves to elastically hold the hanging band 140 .

The filter 130 is a non-woven fabric, and for example, the inner filter 131 and the outer filter 132 can be manufactured by ultrasonic welding, and the filter 130 is in close contact with the inside of the mask body 110 so that the wearer's mouth does not contact. It may be formed in a shape that maintains a certain space inside and protrudes to the front. The filter 130 is disposable and is replaced with a new one after use.

In addition, the hanger band 140 is disposed on both sides of the mask body 110 in order to wear the mask body 110, a length adjustment bracket 145 is connected between the hanger bands 140 on both sides for length adjustment. can

The length adjustment bracket 145 is configured such that a plurality of length adjustment grooves 147 are formed to connect the other side of the hook band 140 in the length adjustment groove 147 .

In addition, the goggles mounting bracket 150 includes a body 151 that is in close contact with the bottom surface of the goggles mounting flat part 113 , and coupling protrusions 152 formed on both upper surfaces of the body 151 .

The coupling protrusion 152 is exposed upward through the protrusion through hole 113a formed in the goggle mounting plane part 113 , and the coupling protrusion 152 is coupled into the coupling groove 21 formed on the lower surface of the goggles 20 . Thus, it is configured to selectively mount the goggles 20 on the goggles mounting plane portion 113 .

On the other hand, Figure 14 and Figure 15 is a front view and a side view showing the multi-purpose dust mask wearing of the present invention.

The multi-purpose dust mask of the present invention can be used alone, and as shown in FIGS. 14 and 15 , goggles can be mounted on the multi-purpose dust mask, and a helmet can be additionally worn.

The multi-purpose dust mask of the present invention can also be used for leisure such as cycling, and also for worksites that generate a lot of dust or chemical plants with heavy toxic gas emissions, metal powder and welding workshops, or special purposes, for example, for military purposes. It can be used universally.

The use of the multi-purpose anti-vibration mask of the present invention configured as described above is as follows.

First, after fixing one hanging band 140 to one end of the length adjustment bracket 145, connect the other hanging band 140 to the other end of the length adjustment bracket 145 to wear a multi-purpose dust mask, By adjusting the length of the hanging band 140 by using a plurality of length adjustment grooves 147, it can be adjusted to fit the body shape of the wearer and worn.

When worn, the multi-purpose dust mask of the present invention covers the wearer's nose and mouth and is in close contact with the chin to cover and closely adhere to the face, and external air flows in through the air intake grill 111, at this time, the air inclined guide surface It is guided into the mask body 110 along the 111a.

The filter 130 is configured as a double filter to effectively filter out harmful substances contained in the incoming air.

In addition, the exhaust discharge valve assembly 120 rapidly discharges the exhaust generated inside the mask body 110 to the outside of the mask body 110 when the wearer exhales, so that moisture does not fill in the mask body 110 . It works.

Looking at the operation of the exhaust discharge valve assembly 120 , when the wearer exhales, the exhaust generated inside the mask body 110 is discharged through the exhaust discharge hole 121a by pressure, at this time the exhaust valve membrane 122 ) opens the exhaust discharge hole 121a only when exhaust is discharged, and the exhaust passing through the exhaust discharge hole 121a is again discharged to the atmosphere through the opening 123a.

In addition, if you want to adjust the tension of the hanger band 140, put your finger into the length adjustment groove 126 and pull the hanger band 140, the hanger band 140 by the cutout structure of the band hanger piece 125. ) is elastically pulled and the length is adjusted, so that the length of the hanging band 140 can be easily adjusted.

As described above, the upper reinforcing rib is formed on the upper side of the front surface of the mask to keep the shape of the mask constant. It can be used universally, such as outdoors for leisure, in chemical plants, or at work sites where metal powder and welding fumes are generated, so it can reduce safety accidents, improve the health and hygiene of the wearer, and save a certain space inside. Because it has a shape that protrudes from the front, it is more hygienic as it does not come into contact with the wearer's mouth.

In addition, the dust mask of the present invention is formed in a shape that gradually narrows in width from the center of the front to both sides and is formed in a streamlined shape, has a beautiful appearance and is in close contact with the face, does not impede the wearer's activity, and has resistance to wind. It has no effect.

In addition, since the dust mask of the present invention is in close contact with the face to increase the anti-vibration effect, and the gas generated during exhalation is rapidly discharged to the outside by the exhaust valve assembly, even if the dust mask is worn, it does not interfere with breathing. It is easy to breathe and can effectively prevent fogging.

In addition, it is possible to quickly put on the dust mask in case of an emergency (for example,

In the event of a safety accident in which toxic gas leaks into the air), it is possible to quickly protect workers from safety accidents by minimizing the time to wear a dust mask, thereby increasing reliability and safety.

In addition, since the mask body is made of eco-friendly materials such as synthetic resin (thermoplastic elastomer, silicone) with excellent resilience and shock absorption, it can be compressed to reduce the volume when not in use, making it easy to carry or store. Because it is restored to its original form, it is very convenient to use, and the risk of bacterial propagation is low due to low water absorption, making it hygienic.

In addition, the hanging band mounting part is integrally formed on one side of the exhaust discharge valve assembly to adjust the length of the hanging band using the hanging band mounting part according to the wearer's physical skeletal condition, for example, the size of the head or face, but cut It is very convenient to adjust the length of the hanging band because the hanging band can be flexibly adjusted by the (切開) structure of the band.

The terms or words used in the present specification and claims described above should not be construed as being limited to conventional or dictionary meanings, and the inventor should appropriately use the concept of terms to describe his invention in the best way. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical ideas of the present invention, so at the time of the present application, various It should be understood that there may be equivalents and variations.

12: coupling protrusion
13: fixed projection
14: turn
20: goggles
21: mating groove
110: mask body
111: air intake grill
111a: air inclined guide surface
111b: banding part
112: filter fixing part
112a: side filter fixing piece
112b: lower filter fixing piece
112c: upper filter batten
113: goggles mounting flat part
113a: protrusion through hole
114: upper reinforcement rib
115: fitting part
120: exhaust exhaust valve assembly
121: exhaust valve body
121a: exhaust exhaust hole
121A: cylindrical part
121B: flange portion
122: exhaust valve membrane
123: exhaust valve cover
123a: opening
123c: exhaust valve cover end
124: hanger band mounting part
125: band hanger
126: length adjustment groove
130: filter
131: inner filter
132: outer filter
140: hanger band
145: length adjustment bracket
147: length adjustment groove
150: goggles mounting bracket
151: body
152: coupling protrusion
H: mounting hole
R: Rib

Claims (8)

It covers the wearer's nose and mouth and is configured to cover the face by being in close contact with the chin. a mask body 110 on which (111) is formed; an exhaust discharge valve assembly 120 installed on both sides of the mask body 110 to discharge the exhaust generated inside the mask body 110 to the outside of the mask body 110 when the wearer exhales; A filter 130 detachably installed on the inner surface of the mask body 110 to block harmful substances contained in the air flowing into the mask body 110 through the air intake grill 111 and to purify the air. ; and hanging bands 140 disposed on both sides of the mask body 110 to wear the mask body 110 , but the filter 130 is fixed to the inner side of the mask body 110 . A filter fixing part 112 is formed for this purpose, and a goggles mounting plane part 113 for mounting the goggles 20 is formed on the upper upper surface of the mask body 110, and the goggles mounting plane part 113 is A goggle mounting bracket 150 for alternatively mounting the goggles 20 is installed on the bottom surface, and the exhaust discharge valve assembly 120 passes through the mounting holes H formed on both sides of the mask body 110 to an exhaust valve body 121 coupled to the mask body 110 and having an exhaust discharge hole 121a for discharging exhaust generated inside the mask body 110 to the outside of the mask body 110; an exhaust valve membrane 122 installed in the exhaust valve body 121 to open the exhaust discharge hole 121a only when exhaust is discharged; and an opening through the mounting hole (H) to be coupled to the exhaust valve body 121 from the outside of the mask body 110 and for discharging the exhaust exhausted through the exhaust exhaust hole 121a at one side ( 123a), and on the other side an exhaust valve cover 123 having a hanging band mounting part 124 for installing the hanging band 140 to be adjustable in length; includes,
The hanging band mounting part 124 is formed in a semi-arc shape, and two hook band hook pieces 125 are arranged at regular intervals along the semi-arc shape, and between the two hook band hook pieces 125, the A length adjustment groove 126 for adjusting the length of the hanger band 140 is formed, and the hanger band hanger piece 125 has an open tunnel structure at one end, and both ends of the front surface of the mask body 110 . A fitting portion 115 for fitting and covering the end portion of the exhaust valve cover 123 is formed in the portion, and the goggles mounting bracket 150 is in close contact with the bottom surface of the goggles mounting flat portion 113. The body 151 ) and a coupling protrusion 152 formed on both upper surfaces of the body 151,
The body 151 is formed in a shape that is enlarged from the middle part to both parts and is formed in a symmetrical streamline shape, and the both parts where the coupling protrusions 152 are formed have a relatively wider width than the middle part, The coupling protrusion 152 is exposed upward through the protrusion through-hole 113a formed in the goggles mounting planar part 113 , and the coupling protrusion 152 is formed in a coupling groove 21 on the lower surface of the goggles 20 . ), the goggles 20 is configured to be selectively mounted on the goggle mounting plane 11, and the air intake grill 111 is formed in multiple stages, and the air intake grill ( An air inclined guide surface 111a is formed on the 111) to guide the air to be sucked into the mask body 110, and the air intake grill 111 has a middle part in a multi-stage, relatively forward direction than an upper and lower part. formed to protrude,
The filter fixing part 112 includes side filter fixing pieces 112a formed at both ends of the mask body 110; a lower filter fixing piece (112b) formed at the lower end of the mask body (110); and an upper filter fixing piece (112c) formed on the bottom surface of the goggles mounting flat part (113) and configured to cover the goggles mounting bracket (150) so as not to contact the wearer's skin; Multipurpose dust mask comprising a. delete delete delete delete delete delete According to claim 1,
The filter 130 is manufactured by ultrasonic fusion method of the inner filter 131 and the outer filter 132, and is in close contact with the inside of the mask body 110 to keep a certain space inside so that the wearer's mouth does not come into contact, A multipurpose dust mask, characterized in that it has a shape that protrudes to the front.

Images