WO2024048802A1

WO2024048802A1 - Mechanical mask

Info

Publication number: WO2024048802A1
Application number: PCT/KR2022/012863
Authority: WO
Inventors: 이승욱; 이정현; 구성모
Original assignee: 주식회사 씨에이랩
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2024-03-07

Abstract

The present invention relates to a mechanical mask and, more specifically, to a mechanical mask comprising: a body part which covers at least a part of a wearer's face; and an exhalation valve which is provided at a side portion of the inner surface of the body part, wherein the exhalation valve is opened in a direction toward the rear of the wearer.

Description

mechanical mask

The present invention relates to a mechanical mask, and more specifically, to a mechanical mask that prevents the spread of droplets, etc. by transmitting the exhaled breath of the wearer to others in front.

In general, masks are items that cover the respiratory tract of the nose and mouth to prevent the inhalation or scattering of germs, dust, etc. for health and hygiene purposes. They are worn by workers working in hospitals or hazardous work environments to prevent harmful substances from being inhaled into the human body through the respiratory tract. It is worn as a kind of replacement for cold weather or when catching a cold in winter when temperatures are low, and is also used to protect the user from yellow dust. Recently, the importance of masks has been highlighted due to diseases such as COVID-19.

For example, Republic of Korea Patent No. 10-1025787 (2011.03.23.) discloses a mask with an exhaust valve.

However, in the case of the related art as described above, the air discharged through the exhaust valve is directed to the front, so the exhaled breath of the wearer flows to others in front during conversation and does not pass through the filter, so there is a high risk of spreading droplets, etc. There was a problem.

The present invention was devised to solve the problems of the prior art as described above. At least part of the wearer's exhaled breath is discharged to the outside of the body through the exhaust valve unit and flows in a direction toward the rear of the wearer, thereby allowing the wearer to The purpose is to provide a mechanical mask that prevents the spread of droplets, etc. by minimizing the flow of exhaled breath to the front of the wearer and allowing the remainder, excluding at least a portion of the wearer's exhaled breath, to flow to the outside of the body through the filter unit. There is.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems to be solved by the present invention that are not mentioned herein can be explained to those skilled in the art from the description below. You will be able to understand it clearly.

In the mechanical mask according to a preferred embodiment of the present invention, it includes a body portion that covers at least a portion of the wearer's face and an exhaust valve portion provided on an inner side of the body portion, and the exhaust valve portion covers the rear of the wearer. It is characterized by being open in the direction facing.

In addition, the exhaust valve unit according to a preferred embodiment of the present invention is characterized in that it is provided on both sides of the body portion.

In addition, in the mechanical mask according to a preferred embodiment of the present invention, a fan is provided on one side of the body to allow external air to flow into the body, and a fan is provided on one side of the body to allow external air to flow into the body by the fan. It further includes a filter part that filters the external air flowing into the body part, and the external air passes through the outer peripheral surface of the filter part and flows into the body part.

In addition, at least a portion of the wearer's exhaled breath according to a preferred embodiment of the present invention is discharged to the outside of the body through the exhaust valve unit, thereby minimizing the flow of the wearer's exhaled breath in front of the wearer, and Excluding at least a portion of the wearer's exhaled breath, the remainder flows through the filter unit and out of the body unit.

In addition, the fan unit according to a preferred embodiment of the present invention includes a case provided inside the body portion and a fan provided inside the case, and the wearer's exhaled breath interferes with the outer peripheral surface of the case, It is characterized in that it flows in a direction toward the exhaust valve unit due to the external air introduced by the fan unit.

As a means of solving the above problem, in the mechanical mask of the present invention, the exhaust valve portion is opened in the direction toward the rear of the wearer, and accordingly, most of the wearer's exhaled breath is discharged to the outside of the body portion through the exhaust valve portion, As the exhaled breath flows toward the front of the wearer, the spread of droplets or saliva to others in front, such as a conversation partner, is minimized, and as the remainder of the wearer's exhaled breath flows through the filter portion and out of the body portion, the droplets are filtered and absorbed into the wearer's body. It has the advantage of minimizing the spread of infectious diseases such as coronavirus by blocking the spread of droplets.

In addition, the mechanical mask of the present invention allows the wearer's exhaled breath to interfere with the outer peripheral surface of the case, and flows in the direction toward the exhaust valve unit due to the external air introduced by the fan unit, thereby minimizing the spread of the wearer's droplets, etc. There is an advantage.

In addition, in the mechanical mask of the present invention, most of the droplets or saliva caused by the wearer's cough or sneeze are attached to the outer peripheral surface of the case, and the remainder is discharged through the exhaust valve part, thereby minimizing the spread of the wearer's droplets, etc. There is an advantage.

In addition, the mechanical mask of the present invention is effective in providing a mechanical mask that can easily increase the filtration area by allowing external air to pass through the side of the filter portion and flow into the body portion.

In addition, the mechanical mask of the present invention has the advantage of being able to replace the fine dust filter without separating the lower coupling portion from the external member, thereby preventing foreign substances or moisture from penetrating into the fan portion, thereby increasing the lifespan of the fan portion.

In addition, the mechanical mask of the present invention allows external air to pass through the fine dust filter and the harmful gas filter and flow into the main body, thereby removing fine dust in the external air and eliminating odors that may be caused by harmful gases. There is an advantage in providing more comfortable air by removing it.

In addition, the mechanical mask of the present invention is effective in allowing a humidifying filter to be inserted into the fine dust filter to supply moisture to the dried outside air in dry environments such as winter.

The effects of the present invention are not limited to the effects mentioned above, and the effects of the present invention not mentioned herein will be clearly understood by those skilled in the art from the description below. .

Figure 1 is a perspective view showing the configuration of a mechanical mask according to a first embodiment of the present invention.

Figure 2 is an exploded view showing the configuration of a mechanical mask according to the first embodiment of the present invention.

Figure 3 is a perspective view showing the configuration of a mechanical mask according to the first embodiment of the present invention. Figure 3 (a) shows the packing separated, and Figure 3 (b) shows the packing combined. .

Figure 4 is a diagram showing the configuration of the exhaust valve part of the mechanical mask according to the first embodiment of the present invention.

Figure 5 (a) is a diagram showing the flow path of the exhalation of the wearer of the mechanical mask according to the first embodiment of the present invention, and Figure 5 (b) is a diagram showing the flow path of the wearer of the mechanical mask according to the first embodiment of the present invention. This is a diagram showing the flow path of droplets or saliva when coughing or sneezing.

Figure 6 (a) is a diagram showing the air outside the mechanical mask according to the first embodiment of the present invention flowing into the body part by the fan part.

Figure 6 (b) shows that when the wearer of the mechanical mask according to the first embodiment of the present invention exhales, most of the exhaled breath flows to the rear of the wearer through the exhaust valve part, and the rest flows to the outside of the body part through the filter part. This is a drawing showing .

Figure 6 (c) is a diagram showing that when the wearer of the mechanical mask according to the first embodiment of the present invention coughs or sneezes, droplets or saliva interfere with the case and flow to the rear of the wearer through the exhaust valve unit.

Figure 7 is a diagram showing the results of numerical analysis of the behavior of coughing and sneezing droplets on the flow path of the mechanical mask according to the first embodiment of the present invention, assuming the size and force of the droplets.

Figure 8 is a view showing the filter part of the mechanical mask according to the first embodiment of the present invention being coupled to the main body.

Figure 9 (a) is a cross-sectional view showing the flow of external air in a mechanical mask according to the first embodiment of the present invention, and Figure 9 (b) is a cross-sectional view showing external air flowing in a conventional filter. This is a cross-sectional view.

10 to 12 are diagrams showing how the length of the filter part protruding from the main body changes depending on the thickness of the filter part of the mechanical mask according to the first embodiment of the present invention.

Figure 13 is a view showing the filter part of the mechanical mask according to the second embodiment of the present invention being coupled to the main body.

Figure 14 is a view showing the filter part of the mechanical mask according to the third embodiment of the present invention being coupled to the main body.

Figure 15 is a conceptual diagram showing the configuration of a filter part of a mechanical mask according to a fourth embodiment of the present invention.

Figure 16 is a conceptual diagram showing the configuration of the filter part of a mechanical mask according to the fifth embodiment of the present invention.

Figure 17 is a conceptual diagram showing the configuration of the filter part of a mechanical mask according to the sixth embodiment of the present invention.

The terms used in this specification will be briefly explained, and the present invention will be described in detail.

The terms used in the present invention are general terms that are currently widely used as much as possible while considering the function in the present invention, but this may vary depending on the intention or precedent of a person working in the art, the emergence of new technology, etc. Therefore, the terms used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, rather than simply the name of the term.

When a part in the entire specification is said to “include” a certain element, this means that it does not exclude other elements but may further include other elements, unless specifically stated to the contrary.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein.

Specific details, including the problem to be solved by the present invention, the means for solving the problem, and the effect of the invention, are included in the examples and drawings described below. The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings.

Hereinafter, the present invention will be described in more detail with reference to the attached drawings.

1 to 3, in the mechanical mask according to the first preferred embodiment of the present invention, a body portion 100 that covers at least a portion of the user's face is provided on one side of the body portion 100. , a fan unit 200 that allows external air to flow into the interior of the body unit 100 and is provided on one side of the body unit 100, so that it flows into the interior of the body unit 100 by the fan unit 200. It includes a filter unit 300 that filters the incoming external air, and an exhaust valve unit 400 provided on an inner side of the body unit 100, and the exhaust valve unit 400 is located on the rear of the wearer. Make sure it is open in the direction facing. In addition, it is provided on one side of the body portion 100 and includes an ear hook (not shown) that is respectively hooked and fixed to both ears of the user.

First, the body portion 100 is prepared. The body portion 100 has an empty space formed inside, the fan portion 200 is provided inside the body portion 100, and the filter portion 300 is attached and detachable to the outer surface of the body portion 100. It can be. Additionally, the body portion 100 includes an inner member 101 that covers the user's nose and mouth and an outer surface member 102 that is exposed to the external space. At this time, the inner member 101 and the outer member 102 are formed to be detachable and, for example, can be screwed together.

More specifically, the inner member 101 is provided at the center of the inner member 101 and includes a fan seating portion 1011 that allows the fan portion 200 to be seated and fixed. The fan seating portion 1011 is formed in a shape corresponding to the outer peripheral surface of the case 220, which will be described later, and can be formed in any shape as long as the fan portion 200 can be seated and fixed. For example, the fan seating portion 1011 is formed to protrude from the inner member 101, and the fan portion 200 is fixed to the fan seating portion 1011 by being inserted into the fan seating portion 1011. It can be.

Additionally, the outer surface member 102 may include a filter seating portion 1021 that allows the filter portion 300 to be seated and fixed. The filter seating portion 1021 is formed in a shape corresponding to the outer peripheral surface of the coupling portion 310, which will be described later, and can be formed in any shape as long as the filter portion 300 can be seated and fixed. For example, the filter seating portion 1021 is formed to protrude from the outer surface member 102, and the filter portion 300 is inserted into the filter seating portion 1021. It can be fixed.

Additionally, the outer member 102 may include a rail groove 1022 formed on one surface of the outer member 102 so that a coupling wing 311, which will be described later, can be inserted. At this time, a step is formed on the inner peripheral surface of the outer surface member 102, and the rail groove 1022 is provided in the step on the inner peripheral surface. The rail groove 1022 is formed in a shape corresponding to the coupling wing 311, which will be described later, and is provided so that the coupling wing 311, which will be described later, can be rotated in one direction after being inserted into the rail groove 1022, which will be described later. It is possible to prevent the coupling wing 311 from separating from the rail groove 1022.

In addition, the mask body 100 is provided on one side of the mask body 100, and has a breathing hole ( 110, an earring fixing part 120 provided on both sides of the mask body 100 and allowing the earring part 400 to be coupled to the mask body 100, and the mask body 100 It includes packing 130 provided on one side to minimize gaps between the mask body 100 and the user's face.

Referring to FIG. 3, the breathing hole 110 is formed on one surface of the inner member 101. At this time, the external air introduced into the inside of the mask body 100 through the filter unit 300 by the fan unit 200 passes through the breathing hole 110 and into the user's nose or mouth. It becomes fluid. Here, the breathing hole 110 communicates with the flow hole 221, which will be described later.

In addition, the hook fixing parts 120 are formed on both sides of the inner surface of the mask body 100, so that the ear hook parts can be attached and detached. At this time, the hook fixing part 120 can be formed in any shape as long as the ear hook part is detachable.

In addition, the packing 130 is fixed to the inner surface of the mask body 100, and is inserted between the mask body 100 and the user's face when the mask body 100 is in close contact with the user's face. may be involved. In addition, the packing 130 may be formed of an elastic material that is deformed into a shape corresponding to the user's face when it contacts the user's face. That is, the packing 130 is modified to correspond to the user's face, thereby minimizing the occurrence of a gap between the mask body 100 and the user's face. Additionally, the packing 130 may be detachably mounted on the mask body 100. For example, the packing 130 may be partially inserted into the mask body 100 or may be attached and fixed to the inner peripheral surface of the mask body 100. Therefore, the packing 130 can be replaced and worn according to the user's body size.

Next, the fan unit 200 is provided. The fan unit 200 may include a fan 210 that allows external air to flow into the interior of the body unit 100 to form positive pressure, and a case 220 that secures the fan 210. . At this time, the case 220 is provided inside the body portion 100, is formed in a shape corresponding to the fan seating portion 1011, and is inserted into and fixed to the fan seating portion 1011. For example, the case 220 has a rectangular parallelepiped shape and is equipped with the fan 210 inside to fix the fan 210, and the upper side of the case 220 is open to allow inflow by the fan 210. The external air passes through the upper side of the case 220 and flows into the breathing hole 110. In addition, the fan 210 makes the air pressure inside the mask body 100 higher than the air pressure outside the mask body 100, so that the outside air flows into the inside of the body portion 100. Make it possible.

Next, the filter unit 300 is provided. The filter unit 300 serves to filter foreign substances in the external air introduced into the body unit 100 by the fan 210.

In addition, the filter unit 300 includes a coupling unit 310 that allows the filter unit 300 to be coupled to the body unit 100, and optionally, if necessary, the filter unit 300 Can be attached and detached to the body portion 100. That is, the coupling portion 310 allows the filter portion 300 to be coupled to and fixed to the filter seating portion 1031. At this time, the coupling portion 310 is hollow and is formed to correspond to the filter seating portion 1031. For example, the coupling portion 310 may be formed in a disk shape, but is not limited thereto.

In more detail, referring to FIG. 8, the coupling portion 310 includes a plurality of coupling wings 311 arranged radially with respect to the center of the coupling portion 310. For example, the plurality of coupling wings 311 are formed to protrude from the edge of the upper or lower surface of the coupling portion 310, and the ends of the plurality of coupling wings 311 are each formed by bending. At this time, the end of the coupling wing 311 is formed in a shape corresponding to the rail groove 1022. For example, the ends of the plurality of coupling wings 311 may each be formed to have a semicircular cross-section, but the present invention is not limited thereto. That is, the end of the coupling wing 311 is inserted into the rail groove 1022 and then rotated in one direction to be inserted into the interior of the rail groove 1022. In other words, a plurality of rail grooves 1022 are formed at positions corresponding to the coupling portion 310, and the ends of the plurality of coupling wings 311 are respectively inserted into the plurality of rail grooves 1022. , the filter unit 300 can be fixed to the filter seating unit 1031 by rotating the coupling unit 310. Here, the plurality of coupling wings 311 may be formed of an elastic material, and the outer peripheral surface of the plurality of coupling wings 311 may be formed to be round.

In addition, the filter unit 300 includes a fine dust filter 321 for filtering fine dust in the outside air, a harmful gas filter 322 for filtering harmful gases in the outside air, and a harmful gas filter 322 for filtering out fine dust in the outside air. It includes a humidifying filter 323 that supplies water and a dehumidifying filter (not shown) that removes moisture in the external air.

In addition, the filter unit 300 includes a cover unit 330 that prevents external air from flowing into the upper or lower surface of the filter unit 300. For example, the cover part 330 is provided on the upper or lower surface of the fine dust filter 321 and serves to cover the upper or lower surface of the fine dust filter 321.

At this time, the filter unit 300 is formed in a hollow shape to have a preset thickness. For example, the filter unit 300 may be formed in a hollow cylindrical shape. That is, the cover part 330 is coupled to the upper surface of the fine dust filter 321, and the coupling part 310 is coupled to the lower surface of the fine dust filter 321. At this time, the external air passes through the outer peripheral surface of the filter unit 300 and flows into the body unit.

Next, the exhaust valve unit 400 is provided. Referring to FIG. 3, the exhaust valve units 400 are provided on both sides of the body unit 100 to ensure that the wearer's exhaled breath is discharged in an overall balanced manner.

For example, referring to FIG. 4, the exhaust valve unit 400 is provided integrally with the side of the packing 130, and at least a portion of the fixing member 420 is open and formed to allow air to flow. And, it may include an exhaust valve body 410 formed in a shape that covers the outer peripheral surface of the fixing member 420. The exhaust valve body 410 is made of a flexible elastic material, and is rotated to open or close depending on the pressure inside the packing 130. For example, the exhaust valve body 410 is made of a thin film of material such as silicon or rubber.

Therefore, when the wearer wears the mechanical mask of the present invention, the exhaust valve unit 400 is opened and closed by the pressure difference between the sealed internal space and the external space, and the packing 130 and the internal space are opened and closed. In the case of exhalation where the pressure increases, the exhaust valve unit 400 is opened and most of the exhaled breath is discharged through the exhaust valve unit 400. In addition, the wearer's exhaled breath is guided by the external air introduced by the fan unit 200 and flows in a direction toward the exhaust valve unit 400.

In addition, protrusions 411 are provided on both sides of the exhaust valve body 410, and fixing holes 421 are formed in shapes corresponding to the protrusions 411 on both sides of the fixing member 420. This is provided, so that the exhaust valve body 410 and the fixing member 420 can be coupled in such a way that the protrusion 411 is inserted into the fixing hole 421. At this time, the exhaust valve unit 400 can be formed in any shape as long as it can be fixed to the packing 130.

Here, the exhaust valve unit 400 is opened in a direction toward the rear of the wearer. That is, referring to (a) of FIG. 5, the exhaust valve body 410 rotates when the wearer exhales, so that the exhaled breath flows from both sides of the wearer toward the rear of the wearer. In addition, referring to (b) of FIG. 5, when the wearer coughs or sneezes, most of the wearer's saliva or droplets interfere with and attach to the outer peripheral surface of the case 220, and the remainder is attached to the exhaust valve unit 400. ) is discharged to the rear of the wearer.

In summary, referring to (a) of FIG. 6, external air flows into the interior of the body portion 100 through the filter portion 300 by the fan portion 200, and the breathing hole 110 It flows into the packing 130 through .

In this state, referring to (b) of FIG. 6, when exhaling, at least a portion of the wearer's exhaled breath is discharged to the outside of the body portion 100 through the exhaust valve portion 400, and the wearer The flow of exhaled breath toward the front of the wearer is minimized, and the rest, excluding at least a portion of the exhaled breath of the wearer, flows to the outside of the body portion 100 through the filter unit 300. At this time, the rest, excluding at least a portion of the wearer's exhaled breath, may interfere with external air introduced by the fan unit 200 and be redirected toward the exhaust valve unit 400.

Here, most of the wearer's exhaled breath is discharged to the outside through the exhaust valve unit 400, and when the exhaled breath pressure is high due to activities such as exercise, a portion of the exhaled breath flows back and passes through the filter unit 300. It flows to the outside of the body portion 100.

And, referring to (c) of FIG. 6, the wearer's exhaled breath interferes with the outer peripheral surface of the case 220, and droplets or saliva in the wearer's exhaled breath are attached to the outer peripheral surface of the case 220, The remainder that is not attached may be discharged through the exhaust valve unit 400. That is, by preventing the wearer's droplets or saliva from flowing in front of the wearer when the wearer coughs or sneezes, the spread of infectious diseases such as coronavirus can be minimized. And, even when the pressure of the wearer's cough or sneeze is high and causes reflux, it is discharged through the filter unit 300, thereby minimizing the spread of infectious diseases.

As a result, the exhaust valve unit 400 is opened in a direction toward the rear of the wearer, and accordingly, most of the wearer's exhaled breath passes through the exhaust valve unit 400 to the outside of the body unit 100. It is discharged to minimize the spread of droplets or saliva to others in front, such as a conversation partner, as the wearer's exhaled breath flows toward the front of the wearer, and the remainder of the wearer's exhaled breath flows through the filter unit 300. As the droplets flow out of the body 100, they are filtered and the wearer's droplets are blocked from spreading, thereby minimizing the spread of infectious diseases such as corona.

Next, Figure 7 shows the results of numerical analysis of the behavior in the flow path while wearing the mechanical mask of the present invention, assuming the size and speed of droplets from the wearer's cough and sneeze. At this time, the space inside the packing 130 created by contact between the wearer's face and the packing 130 is maintained in a positive pressure state through operation of the fan unit 200. In this state, as external air is introduced by the fan unit 200, droplets from coughing or sneezing do not pass through the filter unit 300 and are discharged to the outside, but are not discharged to the outside through the exhaust valve unit 400. Analysis was conducted to confirm the amount of droplets emitted. The analysis results are shown in Table 1 below. That is, referring to FIG. 7, in the case of droplets discharged from the nose when sneezing, the particles are large and heavy and have a large inertia, so they have a large straight line, so most of the droplet particles are attached to the outer peripheral surface of the case 220, and the exhaust It can be seen that the amount of droplet particles that pass through the valve unit 400 and are discharged to the outside is relatively very small. In other words, it is possible to prevent droplets from being discharged in front of the wearer even when sneezing or coughing, thus minimizing the spread of coronavirus and the like.

입자크기particle size		재채기(10μm)Sneeze (10μm)	기침(100μm)Cough (100μm)
입자유속Particle flow rate		100 m/s100 m/s	10 m/s10 m/s
배기밸브 본체 5도 개방Exhaust valve body 5 degree opening	비말 배출수droplet discharge	23/250023/2500	0/25000/2500
배기밸브 본체 5도 개방Exhaust valve body 5 degree opening	비말 제거율[%]Droplet removal rate [%]	99.08%99.08%	100%100%

Meanwhile, referring to (a) of FIG. 9, the filter unit 300 is provided such that at least a portion of the filter unit 300 protrudes from the body unit 100. In other words, at least a portion of the outer peripheral surface of the fine dust filter 321 is provided to protrude from the outer surface member 102, and the external air passes through the side of the fine dust filter 321 to the body portion 100. ) flows inside. At this time, the upper surface of the fine dust filter 321 refers to the portion where the cover portion 330 is coupled, and the lower surface of the fine dust filter 321 refers to the portion coupled to the coupling portion 310. And, the side of the fine dust filter 321 refers to the remaining surface excluding the upper and lower surfaces of the fine dust filter 321. In other words, the outer peripheral surface of the filter unit 300 may mean, for example, a side surface of the fine dust filter 321, and the external air is generated when the filter unit 300 protrudes from the body 100. and passes through the side of the filter unit 300 exposed to the outside. That is, referring to (b) of FIG. 9, in the case of the conventional filter 10, in order to increase the filtration area, the thickness of the conventional filter 10 must be increased or the cross-sectional area of the conventional filter 10 must be reduced. had to be increased. That is, since external air flows vertically into the upper or lower surface of the conventional filter 10, there is a problem that the shape of the product must be changed in order to increase the filtration area. In addition, when the thickness of the conventional filter 10 is increased, the load applied to the fan increases, which reduces the lifespan and increases the frequency of failure. In contrast, referring to FIGS. 10 to 12, in the mechanical mask of the present invention, the external air passes through the side surfaces of the fine dust filters 321-1, 321-2, and 321-3 and enters the body portion ( By allowing it to flow into the interior of 100), the filtration area can be easily increased. As a result, the length of the filter unit 300 protruding from the body 100 can be adjusted to adjust the filtration area exposed to the outside of the filter unit 300. The lifespan can be easily adjusted.

Hereinafter, a mechanical mask according to a second preferred embodiment of the present invention will be described in detail with reference to the attached drawings. In this embodiment, compared to the first embodiment, the coupling portion 310 includes an upper coupling portion 3101 and a lower coupling portion 3102, and the cover portion 330 includes a cover rail groove 331. There is a difference in that it is done. In this embodiment, the description of the first embodiment is used for configurations that overlap with the first embodiment.

Referring to FIG. 13, the coupling portion 310 includes an upper coupling portion 3101 provided on the upper part of the fine dust filter 321 and fixing the fine dust filter 321, and the fine dust filter 321. It includes a lower coupling part 3102 that is provided at the lower part of the and fixes the fine dust filter 321. In addition, the upper coupling portion 3101 and the lower coupling portion 3102 each include a plurality of coupling wings 3103.

In addition, the cover part 330 includes a plurality of cover rail grooves 331 formed so that the plurality of coupling wings 3103 provided in the upper coupling part 3101 can be inserted. That is, the lower coupling portion 3102 is coupled to the outer surface member 102, and the upper coupling portion 3101 is coupled to the cover portion 330.

Therefore, when the fine dust filter 321 needs to be replaced, the cover part 330 is rotated to separate it from the upper coupling part 3101, and the upper coupling part 3101 is separated from the fine dust filter 321. There is an advantage that the fine dust filter 321 can be easily replaced by separating the and lower coupling portions 3102. In other words, the fine dust filter 321 can be replaced without separating the lower coupling part 3102 from the outer surface member 102, thereby preventing foreign substances or moisture from penetrating into the fan unit 200, There is an advantage in that the lifespan of the fan unit 200 can be increased.

Hereinafter, a mechanical mask according to a third preferred embodiment of the present invention will be described in detail with reference to the attached drawings. This embodiment is different from the first embodiment in that a screw thread is formed on the outer peripheral surface of the coupling portion 3110 and a screw thread is formed on the inner peripheral surface of the outer surface member 102. In this embodiment, the description of the first embodiment is used for configurations that overlap with the first embodiment.

Referring to FIG. 14, the upper surface of the fine dust filter 321 is coupled to the cover part 330, and the lower surface of the fine dust filter 321 is coupled to the coupling part 3110. At this time, a screw thread is formed on the lower outer peripheral surface of the coupling portion 3110, and a screw thread is formed on the inner peripheral surface of the outer surface member 102. Accordingly, the coupling portion 3110 may be rotated while provided adjacent to the inside of the outer surface member 102 to couple the coupling portion 3110 and the outer surface member 102. Therefore, there is an advantage that the filter unit 300 can be easily attached and detached from the main body unit 100. In addition, when the filter unit 300 is coupled to the main body 100, the rotation speed of the coupling unit 3110 is adjusted, thereby reducing the length at which the fine dust filter 321 protrudes from the outer surface member 102. It can be adjusted. That is, when the rotation speed of the coupling part 3110 is relatively high, the length at which the fine dust filter 321 protrudes from the outer surface member 102 becomes shorter, and the rotation speed of the coupling part 3110 is relatively small. In this case, the length of the fine dust filter 321 protruding from the outer surface member 102 becomes longer. Through this, there is an advantage that the length at which the filter part 300 protrudes from the body part 100 can be adjusted.

Hereinafter, a mechanical mask according to a fourth preferred embodiment of the present invention will be described in detail with reference to the attached drawings. This embodiment differs from the first embodiment in that a harmful gas filter 322-1 or a humidifying filter 323 is inserted into the hollow of the fine dust filter 321. In this embodiment, the description of the first embodiment is used for configurations that overlap with the first embodiment.

Referring to FIG. 15, the harmful gas filter 322-1 or the humidification filter 323 may be provided in the hollow portion of the fine dust filter 321. For example, the harmful gas filter 322-1 is inserted into the fine dust filter 321 in a cylindrical shape corresponding to the inner peripheral surface of the fine dust filter 321. Accordingly, there is an advantage of supplying more comfortable air by allowing the outside air to pass through the fine dust filter 321 and the harmful gas filter 322-1 and flow into the main body 100. there is. In addition, in the case of a dry environment such as winter, the humidifying filter 323 is inserted into the fine dust filter 321 to supply moisture to the dried external air.

Hereinafter, a mechanical mask according to a fifth preferred embodiment of the present invention will be described in detail with reference to the attached drawings. This embodiment differs from the first embodiment in that the harmful gas filter 322-2 or the humidifying filter 323 is inserted into the hollow of the coupling portion 310. In this embodiment, the description of the first embodiment is used for configurations that overlap with the first embodiment.

Referring to FIG. 16, the harmful gas filter 322-2 or the humidification filter 323 may be provided in the hollow of the coupling portion 310. For example, the harmful gas filter 322-2 is inserted into the interior of the coupling portion 310 in a disk shape corresponding to the inner peripheral surface of the coupling portion 310. Accordingly, there is an advantage of supplying more comfortable air by allowing the outside air to pass through the fine dust filter 321 and the harmful gas filter 322-2 and flow into the main body 100. there is. In addition, in the case of a dry environment such as winter, the humidifying filter 323 is inserted into the fine dust filter 321 to supply moisture to the dried external air.

Hereinafter, a mechanical mask according to a sixth preferred embodiment of the present invention will be described in detail with reference to the attached drawings. This embodiment differs from the fourth embodiment in that the harmful gas filter 322-3 or the humidifying filter 323 is formed to surround the outer and inner peripheral surfaces of the fine dust filter 321. In this embodiment, the description of the fourth embodiment is used for configurations that overlap with the first embodiment.

Referring to FIG. 17, the harmful gas filter 322-3 or the humidification filter 323 is formed to surround the outer peripheral surface and the inner peripheral surface of the fine dust filter 321. In more detail, the harmful gas filter 322-3 includes an outer filter 3221 formed in a hollow cylindrical shape, is provided inside the outer filter 3221, and has the same center as the outer filter 3221. It includes an inner filter 3222 formed to have an axis, and a connection portion 3223 connecting the lower surface of the outer filter 3221 and the lower surface of the inner filter 3222. At this time, at least part of the upper surface of the outer filter 3221 is formed open, and at least part of the lower surface and upper surface of the inner filter 3222 are formed open. In addition, the connection portion 3223 is formed in a hollow disk shape and is provided on the lower surface of the outer filter 3221 to fill the space between the outer filter 3221 and the inner filter 3222, Connect the outer filter 3221 and the inner filter 3222. At this time, the hollow of the connecting portion 3223 is formed to have a diameter corresponding to the lower surface of the inner filter 3222, so that the lower surface of the inner filter 3222 is provided in an open state. Additionally, the longitudinal length of the harmful gas filter 322-3 may be shorter than the longitudinal length of the fine dust filter 321. Accordingly, the connection part 3223 is coupled to the coupling part 310, so that the filter part 300 is coupled to the main body part 100. Therefore, there is an advantage in supplying more comfortable air by allowing the outside air to pass through the fine dust filter 321 and the harmful gas filter 322-2 and flow into the main body 100. . In addition, in the case of a dry environment such as winter, the humidifying filter 323 is inserted into the fine dust filter 321 to supply moisture to the dried external air.

As such, a person skilled in the art will understand that the technical configuration of the present invention described above can be implemented in other specific forms without changing the technical idea or essential features of the present invention.

Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the claims described later rather than the detailed description above, and the meaning and scope of the claims and their All changes or modified forms derived from the equivalent concept should be construed as falling within the scope of the present invention.

[Explanation of symbols]

100: body part

101: inner member

1011: Fan seating part

102: External member

1021: Filter seating part

1022: Rail groove

1023: Ministry of China and Republic of Korea

110: breathing hole

120: Earring fixing part

130: packing

200: Fan section

210: fan

220: case

221: flow hole

300: Filter part

310: coupling part

311: Combined wings

3101: upper coupling part

3102: Lower joint

3103: Combined wings

3110: coupling part

321: Fine dust filter

321-1: Fine dust filter

321-2: Fine dust filter

321-3: Fine dust filter

321-4: Fine dust filter

322: Harmful gas filter

322-1: Harmful gas filter

322-2: Harmful gas filter

322-3: Harmful gas filter

3221: Outside filter

3222: inner filter

3223: connection

323: Humidification filter

330: Cover part

331: Cover rail groove

400: Exhaust valve part

410: Exhaust valve body

411: protrusion

420: fixing member

421: fixing hole

10: Conventional filter

Claims

A body portion covering at least a portion of the wearer's face; and

It includes an exhaust valve unit provided on an inner side of the body portion,

A mechanical mask, characterized in that the exhaust valve portion opens in a direction toward the rear of the wearer.
According to paragraph 1,

A mechanical mask, characterized in that the exhaust valve portion is provided on both sides of the body portion, respectively.
According to paragraph 1,

a fan unit provided on one side of the body to allow external air to flow into the body; and

It further includes a filter unit provided on one side of the body unit to filter the external air introduced into the body unit by the fan unit,

A mechanical mask, characterized in that the external air passes through the outer peripheral surface of the filter unit and flows into the interior of the body unit.
According to paragraph 3,

At least a portion of the wearer's exhaled breath is discharged to the outside of the body through the exhaust valve unit to minimize the wearer's exhaled breath from flowing forward of the wearer,

A mechanical mask, characterized in that the remainder, excluding at least a portion of the wearer's exhaled breath, flows out of the body portion through the filter portion.
According to paragraph 3,

The fan part,

A case provided inside the body portion; and

It includes a fan provided inside the case,

A mechanical mask, characterized in that the wearer's exhaled breath interferes with the outer peripheral surface of the case and flows in a direction toward the exhaust valve unit by the external air introduced by the fan unit.