WO2021230183A1

WO2021230183A1 - Mask shield and multiple mask shield

Info

Publication number: WO2021230183A1
Application number: PCT/JP2021/017651
Authority: WO
Inventors: 直樹馬場
Original assignee: 直樹馬場
Priority date: 2020-05-15
Filing date: 2021-05-10
Publication date: 2021-11-18
Also published as: JP2023089320A

Abstract

This mask shield comprises a space formation means for forming a space between a filter and a user's mouth and nose. The space formation means may be provided with: an inner frame that is attached to the user's face and is capable of being deformed so as to conform to the shape of the user's face; and an outer frame that is provided in front of the inner frame. The inner and outer frames may be formed of a single plate, and may be configured such that the outer frame is pulled and raised from the inner frame. The space formation means may be a mask parasol that has a three-dimensional parasol shape and is to be inserted between the filter and the user's face, or a mask string that is fastened to a plurality of string points formed on the surface of the filter and that forms a space when the string is pulled. By further providing a low-pressure tube that is for tight adhesion and that is for tightly attaching the frame of the space formation means to the user's face, it is possible to enhance adhesion to the user's face.

Description

Mask shield and multiple mask shield

The present invention relates to a mask shield and a multiple mask shield, and is particularly suitable for use as a countermeasure against new coronaviruses and hay fever. The present invention relates to a mask shield and a multiple mask shield capable of achieving a high mask function by improving the permeation removal rate of dust, aerosol, pollen, etc.

Conventionally, as a mask frame for attaching a simple disposable mask to the respiratory part of the nose or mouth to enhance the dustproof effect, a single ring-shaped mask frame as described in

Patent Documents

1 and 2 has been proposed. There is.

Further, although it is not a mask frame, Patent Documents 3 and 4 propose a mask in which a frame is used to provide a space in front of the user's face.

Further, patent documents 5 to 8 propose a technique for improving the adhesion of the mask to the user's face.

Japanese Unexamined Patent Publication No. 2000-140139 International Publication WO02 / 11817A1 Gazette Japanese Unexamined Patent Publication No. 2011-430 Jitsukaisho 61-1549462 JP-A-2015-192864 Japanese Unexamined Patent Publication No. 9-28825 Japanese Patent Publication No. 2013-516251 Japanese Patent Publication No. 2012-515562

According to the view of the Japanese Aerosol Society shown in Non-Patent Document 1, what is important for a mask is to eliminate leakage (penetration) from the gap between the edge of the mask and the face surface as much as possible, rather than the filter performance.

However, in the past, the mask shield that can be easily applied to commercially available masks and can achieve a high mask function, and the mask shield maintains its adhesion to the user's face regardless of the deformation of the user's face due to conversation, breathing, etc. No technique was proposed.

In order to improve the adhesion between the mask and the user's face, masks with sponge seals and rubber masks with lips have been developed, but there is elastic deformation and there is no relationship between the strong crimping force and the weak crimping force. There was a problem that a strong force was partially applied to the face due to the repulsive force.

The present invention has been made to solve the above-mentioned conventional problems, and blocks the air breathing without passing through a mask, and reduces the permeation removal rate of dust, aerosol, pollen, etc. in the air breathing through the mask to be used. The first task is to provide a mask shield and a multiple mask shield that can be improved to achieve a high mask function.

The second object of the present invention is to provide a mask shield capable of maintaining adhesion to the user's face regardless of deformation of the user's face due to conversation, breathing, or the like.

The present invention solves the first problem by means of a mask shield provided with a space forming means for forming a space between the user's mouth and nose and the filter.

Here, the space forming means includes an inner frame that is attached to the face of the user and can be deformed according to the shape of the face of the user, and an outer frame that is arranged in front of the inner frame. Can be done.

Further, the inner frame and the outer frame can be formed of one plate, and the outer frame can be raised from the inner frame.

Further, the outer frame can be provided with a locking means for locking the strap to be hung on the user's ear.

Further, the filter can be mounted at least between the inner frame and the user's face, the outer frame, or around the inner frame and the outer frame.

Further, the space forming means can be a parasol-shaped solid inserted between the user's face and the filter.

Further, the space forming means is locked to a plurality of string points formed on the surface of the filter to form a plurality of strings that pull the surface of the filter, and the space is pulled by pulling the string locked to the string points. Can be formed.

The present invention also solves the second problem by further providing a low pressure tube for close contact for bringing the frame of the space forming means into close contact with the face of the user.

Here, the overall shape of the low-pressure tube for close contact can be made into a ring shape.

Further, the cross-sectional shape of the low pressure tube for close contact can be made elliptical.

Further, the fluid can be sealed in the low pressure tube for close contact.

Further, a frame clip for locking the inner frame can be fixed to the close contact low pressure tube.

The present invention also provides a multiple mask shield, characterized in that the mask shields are arranged in multiple layers.

According to the present invention, for example, by pressing a commercially available mask using the mask shield of the present invention, leakage (infiltration) from the gap between the edge of the mask and the face surface is prevented, and air breathing without passing through the mask is prevented. It is possible to achieve a high mask function by improving the permeation removal rate of dust, aerosol, pollen, etc. in the air that is blocked and breathed through the mask used.

That is, for example, by stacking a mask shield of the present invention that matches the shape of the user's nose and mouth on a commercially available mask to block the outside air passing through the gap between the masks, the mask does not pass through the filter. The outside air inhaled into the air can be greatly reduced.

Therefore, foreign matter such as dust and aerosol in the air sucked into the mouth and nose is sucked into the nose and mouth through the filter in the mask shield. Will be.

The sucked air differs depending on the foreign matter removing performance of the mask used, but by using the mask shield of the present invention, it is possible to obtain an effect exceeding the foreign matter removing performance when the mask is used alone.

An exploded perspective view showing the overall configuration of the first embodiment of the present invention. Front view showing an example of the frame shape of the first embodiment Top view as well Front view showing another example of the frame shape of the first embodiment Top view as well Perspective view showing an example of the usage method of the first embodiment. Perspective view showing another example of the usage of 1st Embodiment Perspective view showing still another example of the usage of 1st Embodiment Perspective view showing still another example of the usage of 1st Embodiment An exploded perspective view showing the overall configuration of the second embodiment of the present invention. Front view showing the state before deployment as well Similarly, a perspective view showing the state after the outer frame is deployed. A perspective view showing the usage state as well. Top view showing a comparison between the force state of the first embodiment and the force state of the second embodiment. A plan view showing a comparison between a general plane mask and the second embodiment. Top view showing the state in which force acts A diagram showing the state in which force also acts Front view showing the state before the development of the third embodiment of the present invention. Similarly, a perspective view showing the usage state after the outer frame is deployed. Front view showing the state before the development of the fourth embodiment of the present invention. Similarly, a perspective view showing the usage state after the outer frame is deployed. Front view showing the state before the development of the fifth embodiment of the present invention. A perspective view also showing a string hook Similarly, a perspective view showing the usage state after the outer frame is deployed. An exploded perspective view showing a sixth embodiment of the present invention. Perspective view showing the shape of the mask umbrella of the 7th embodiment of the present invention. Similarly, a perspective view seen from the front Surface view also seen from the back side Front view of a modified example of the seventh embodiment as viewed from the back side A surface view showing the filter of the eighth embodiment of the present invention. Similarly, a perspective view seen from the back side Similarly, an exploded perspective view showing the state before mounting on the user's face. Similarly, a perspective view of the state after mounting as seen from the front. Front view showing the state before the development of the ninth embodiment of the present invention. Front view also explaining how to hang a string A perspective view from the front side that also shows the usage status. An exploded perspective view showing a tenth embodiment of the present invention. An exploded perspective view showing the eleventh embodiment of the present invention. Similarly, a cross-sectional view showing the cross-sectional shape of the low-pressure tube for close contact. Front view showing the overall shape of the low pressure tube for close contact Similarly, a cross-sectional view showing a change state of the vertical cross-sectional shape of the low-pressure tube for close contact. Similarly, a cross-sectional view showing a comparison of changes in the vertical cross-sectional shape of the low-pressure tube for close contact before and after mounting. An exploded perspective view showing the state of assembling the low pressure tube for close contact and the mask shield. Vertical cross-sectional view showing the assembled state as well Cross-sectional view showing an example of the shape of the frame clip for locking the frame. Cross-sectional view showing another example of the shape of the frame clip, also for locking the frame. Cross-sectional view showing still another example of the shape of the frame clip, also for locking the frame. Cross-sectional view showing still another example of the shape of the frame clip, also for locking the frame.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the contents described in the following embodiments. Further, the constituent requirements in the embodiments described below include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those that are in a so-called equal range. Further, the components disclosed in the embodiments described below may be appropriately combined or appropriately selected and used.

As shown in FIG. 1, the mask shield 20 according to the first embodiment of the present invention includes an inner frame 22 attached to the face of the user 10 and deformable according to the face shape of the user 10, and the inner frame. An outer frame 24 arranged in front of the 22 is provided. In the figure, 40 is an elastic strap (also referred to as a string) for hanging the mask shield 20 (specifically, the outer frame 24) on the ear of the

user

10, and 50 and 52 are filters.

As shown in FIGS. 2A (front view) and 2B (top view), the outer frame 24 has a symmetrical ring shape along a 360 ° peripheral ridge line surrounding the mouth and nose of the user 10. Strap arms 24A for locking the strap 40 are formed on both sides thereof, and a strap hole 24B which is a locking hole for the strap 40 is formed in the strap arm 24A. The outer frame 24 has a planar shape as shown in FIG. 2A, and is used by expanding the portion of the strap arm 24A to the outside as shown in FIG. 2B.

The inner frame 22 has the same shape as the outer frame 24, and can have a simple ring shape without the strap arm 24A.

Both the inner frame 22 and the outer frame 24 are manufactured by using a material having a restoring force of elastic deformation, for example, metal, natural and artificial resins, and a composite material thereof. Both the inner frame 22 and the outer frame 24 can be adjusted using the restoring force of elastic deformation so that pressure is evenly applied to the crimping surface of the mask filter along the ridgeline of 360 ° around the mouth and nose of the user 10. It is said that.

The mask shield 20 should seal around the mouth and nose of the user 10 without transmitting the force of bringing the mask and the mask body including the mask filter into close contact with the face to the mask and the mask body including the mask filter. By pressing the mask shield 20 directly on the face around the filter, which surrounds the mouth and nose, the mask shield 20 has a feature of directly transmitting the pulling force of the strap 40 as a force to be crimped.

Wrap or align a soft material such as silicon tube, rubber, paper, cloth, vinyl, etc. around the outer circumference of the mask shield 20, and the mask shield 20 tightly wraps the mask from above the facial ridge that surrounds the mouth and nose of the attached mask. Can be crimped.

As in the modified examples shown in FIGS. 3A (front view) and 3B (top view), the outer frame 24'may be provided with two strap arms 24A'on the left and right sides and a strap hole 24B'. can. According to the examples of FIGS. 3A and 3B, since there are many parts for pulling the strap 40, the strap 40 can be reliably brought into close contact with the head of the user 10.

Examples of the state in which the mask is attached to the mask shield 20 are shown in FIGS. 4A to 4D.

FIG. 4A is an example in which a commercially available flat mask 12 is attached between the mask shield 20 and the face of the user 10 to enhance the shield function of the flat mask 12.

FIG. 4B is an example in which the filter 54 is adhered to the mask shield 20 and used as a frame of a disposable mask.

FIG. 4C is an example in which, for example, a flat or three-dimensionally molded replacement cartridge type filter 56 is attached to the mask shield 20 and used. In this case, the filter can be replaced with a filter suitable for the purpose and used repeatedly.

FIG. 4D is an example in which, for example, an arbitrary filter 58 in which three layers of paper 60, cloth 62, and synthetic paper 64 are laminated is attached between the inside of the mask shield 20 and the face of the user 10.

In the case of FIGS. 4A, 4C, 4D, the flat mask 12, filters 56, 58, etc. are disposable, while the mask shield 20 is washed, sterilized, and can be used repeatedly.

Among the functions of the existing mask, the mask shield 20 separates the filter function and the function of the existing mask to bring the mask body including the filter into close contact with the face around the nose and mouth, and the user 10 has a function. It is said to be a device that adheres the filter to the face and around the mouth and nose and holds the filter.

In this way, by providing only the mask shield with the function of holding and adhering to the mask filter and attaching it to the user 10, when the mask unit having this mask shield is attached, the air resistance during breathing with respect to the filter portion, No load other than the close contact pressure between the mask shield and the user's face due to wearing is applied to the user.

The mask shield 20 of the present invention can be attached by selecting a filter and its stacking according to the purpose according to the conditions such as dust and droplets at the site where the mask is required.

Further, the mask shield 20 can be attached and detached by holding the frame portion without touching the filter portion of the mask body, and it is possible to prevent the filter from being soiled by touching it.

According to the first embodiment, the inner frame 22 and the outer frame 24 can be separated and used as two mask shields 20.

Next, a second embodiment of the present invention will be described with reference to FIG.

The mask shield 70 of the second embodiment has an outer frame portion 74 of a double ring-shaped flat ring having a dividing line 70A formed by, for example, laser cutting, as shown in FIG. 6, as shown in FIG. By raising it from the frame portion 72, it is in a used state as shown in FIG. In the figure, 70B is a hole having a small diameter for facilitating bending, 74A is a convex portion for locking a strap, 74B is a strap hole, and 76 is a filter.

In the present embodiment, the force point for pressing the mask on the face of the user 10 is arranged in front of the inner frame portion 72 by raising a part of the double ring-shaped member as shown in FIG. 6 and expanding it to the left and right. At the same time, you can get closer to your face. This makes it possible to reduce the frequency with which the strap 40 hits the cheeks and reduce the pressure with which the straps hit the cheeks. Then, as shown in FIG. 5, the mask shield 70 can be attached from above the filter 76.

The force applied to the mask shield of the first embodiment and the second embodiment is shown in comparison with FIG. In the mask shield 20 of the first embodiment shown on the left side of FIG. 9, the crimping force can be made uniform by adjusting the end EE'in the upward direction of the figure. On the other hand, in the mask shield 70 of the second embodiment shown on the right side of FIG. 9, the crimping force at the central portion can be reduced and made uniform by moving the end portion EE'in the face direction.

Next, with reference to FIG. 10, as shown on the left side of FIG. 10, a conventional general flat mask 12 having strap support points for fixing and crimping the mask to the user's face at the left and right ends of the mask body, and The state of action of the force of the mask shield 70 of the second embodiment of the present invention shown on the right side of FIG. 10 will be described. In the figure, A (A') is defined as the action point of the strap, and the upper left point holding the strap 40 is defined as the force point B (B'), the angles R, and L. In the conventional general flat mask 12 shown on the left side of FIG. 10, the force for bringing the mask into close contact gives a pulling force between BL'-A'-BR', and the force for pulling the mask body and the direction in which the force is applied. It works as a moment on the side of the face, cheeks and head, and the part between them, and the crimping force of the mask is obtained from this moment. This crimping force can be generally expressed as C'-D'on the drawing. Assuming that the force for pulling the mask is constant, for example, 100 g, when applied to A'-B', the force for stretching the mask body and the force for pressing the mask body against the face generally act as a vector represented as C'-D'. Since the structure is such that C'-D'acts as a vector to generate a crimping force, it is difficult to apply an effective force to the part required for the close contact of the mask, and the strap 40 is attached to the mouth and nose area where the most crimping force is desired. Power cannot be given effectively. Further, for example, the force of pulling the strap 40 at 100 g is divided into the forces represented by the C'-D', and a large force loss occurs. Therefore, when improving the adhesion of the mask, it is necessary to apply a strong force by the strap 40, and the force is generated as a physical burden on the user.

On the other hand, in the second embodiment of the present invention, in order to obtain the mask crimping force, as shown on the right side of FIG. 10, the action point A that greatly reduces the force loss C'-D'is set. There is. When C and D overlap in the figure, the pulling force applied to the strap 40, for example 100 g, is directly applied to the point of action. In the second embodiment of the structure that shortens the distance L between the CDs, this force is directly applied to the mask shield, and the mask filter around the mouth and nose is brought into close contact with each other to enhance the sealing effect. In this way, the mask shield 70 of the second embodiment can suppress the force applied to the strap 40 when the mask is used, and can obtain a sufficient crimping force of the mask filter, which leads to the reduction of the physical burden on the user 10. be able to.

That is, even in the resultant force applied to the side surface of the face, the distance L of CD can be set smaller than the distance L'of C'-D'in FIG. In this way, by reducing the angle of A of the triangle of CA-BL, the force to escape in the face direction is reduced, and the pressure applied to the side surface of the head of the user 10 is unnecessary for the mask crimping. The load applied to 10 can be greatly reduced.

Hereinafter, with reference to FIG. 11, the concept that the force applied to the strap 40 by the mask shield 70 of the second embodiment can be efficiently transmitted to the adhesion force of the mask will be described.

In FIG. 11, CL is a virtual line that passes through the center of the face symmetrically from the upper part of the head. Here, it is assumed that the direction of pulling the mask on the figure connects the points where the force direction of the strap 40 contacts the face with the nose as the center, and there is no deformation of the mask or loss of the force of pulling the strap 40 due to other resultant forces.

When a resultant force is created between the pulling directions A and A'of the left and right straps 40 of the flat surface mask 12 and the center of the face where the left and right straps 40 are pulled symmetrically, the angle of A-AC-A'is 120 °. This is the angle formed by the line connecting the center of the face to the left and right of the head of the face. The pulling force applied to the strap 40 is B and B', and the calculation is performed with the pulling direction of the left and right straps 40 being twice the angle forming the CL center line as the resultant force condition.

Calculate the resultant force of the plane mask using the calculation formula based on the above conditions. When the force for pulling the left and right straps 40 at an angle of 60 ° × 2 and a total of 120 ° is set to 1, the mask adhesion resultant force R applied in the facial direction on the CL line is 1. From this, the force for bringing the mask into close contact is transmitted as the contact pressure for only half of the total force for pulling the strap 40 on the left and right.

On the other hand, in the second embodiment, the strap attachment points BL and BR applied from the force for pulling the mask are widened in front of the mask and to the left and right, and the direction for pulling the strap 40 is placed far from the face on the CL line, and the center BC of the resultant force. Is formed smaller than the angle between the CL and the pulling direction of the strap 40. As for the pulling direction of the strap 40, the resultant force is applied to the BL and BR of the outer frame portion 74 and the extension line of the pulling direction of the strap 40. When the case of adding is drawn as shown in FIG. 12 and the calculation is performed, the resultant force R is 1.938152.

In FIG. 12, when F1 and F2 are the attractive forces of the left and right straps 40, respectively, the force to be crimped to the face is calculated as R from the combined point of the forces on the CL of the mask. α is derived as the pulling force direction of the left and right straps 40 of the mask as the angle at which the left and right straps 40 intersect on the center line CL of the face of the person wearing the mask.

When a force for pulling the same strap 40 is applied to each mask under the same conditions, the resultant force of the mask shield of the second embodiment can obtain a close contact pressure of about 1.9 times. The pulling force of the strap 40 is 1 on one side, and 1/2 of the calculated resultant force of 1.93 is 0.965, which is the pulling force of one side of the strap 40. From this, in the second embodiment, the loss of the attractive force of the strap 40 is limited to about 3.5%.

When the strap 40 is actually worn, when the strap 40 is hung from behind the ear of the mask wearer, the angle β of CA-BL of the second embodiment is the angle β of C'-A'-BL'of a general mask. The angle can be reduced, the force applied to the side surface of the head and face can be suppressed, and the force applied to the strap 40 can be efficiently transmitted to the adhesion force of the mask body.

That is, the angle of the resultant force point of the two left and right straps 40 is reduced, and the contact point with the direction line of the force for pulling the strap 40 is set to the rear of the head side, and the direction line is set sharply on the face. Therefore, the force for pulling the strap 40 does not work significantly on the side surface of the face, and the force applied to the side surface of the face can be greatly reduced.

In other words, when the same crimping pressure is obtained, it is possible to obtain the contact pressure of the mask by the force applied to the strap of more than half, and by using the second embodiment, the pulling force of the strap 40 due to the contact is obtained. Can achieve a significant reduction in stress on the body.

According to this second embodiment, it is possible to secure the crimping force of the mask shield 70 and reduce the load on the user at the same time. For the mask user who attaches great importance to wearing the mask, the load on the strap 40 applied to the ear or the back of the head in the field where the mask is used for a long time is large. The strap 40 of the mask puts a great deal of pressure on the cheeks, which is a heavy burden. The mask shield 70 of the second embodiment eliminates the pulling force applied to the mask when the mask is attached, and the mask shield main body can be directly pressed against the face.

Furthermore, since it can be adjusted three-dimensionally, the effective area of the filter can be greatly expanded. Since the area can be increased, the air flow rate can be maintained and breathing is easy even when the filter is used in double or triple layers or when a dense filter is used.

The third and fourth embodiments of the present invention, which are modifications of the second embodiment, are shown in FIGS. 13A, 13B, 14A, and 14B.

The mask shield 80 of the third embodiment shown in FIGS. 13A (state before unfolding) and FIG. 13B (state of use after unfolding) has a rectangular double structure, where 82 is an inner frame portion and 84 is. It becomes the outer frame part.

The mask shield 90 of the fourth embodiment shown in FIGS. 14A (state before unfolding) and FIG. 14B (state of use after unfolding) has an elliptical double structure, 92 is an inner frame portion, and 94 is. It becomes the outer frame part.

In any case, a tent-like space can be formed in front of the user by raising an arbitrary frame portion inside or outside.

The fifth embodiment of the present invention is shown in FIGS. 15 to 17.

In the present embodiment, in the same configuration as the second embodiment shown in FIG. 5, the outer frame portion 74 and the inner frame portion 72 are made of different wire-like materials and are joined by the joining portion 73 to form a mask shield. It is set to 70.

In the present embodiment, the string hook 75 as shown in FIG. 16 can be arranged on the outer frame portion 74, and the strap 40 can be hung as shown in FIG.

Next, the double mask shield 100 according to the sixth embodiment of the present invention will be described with reference to FIG.

The double mask shield 100 includes a filter 112 on each of an outer shield 110 composed of the same mask shield as in the second embodiment and an inner shield 120 in which the strap locking convex portion is omitted from the second embodiment. , 122 is attached and then doublely attached to the face of the user 10. By duplicating in this way, the effect of the filter can be enhanced.

As the inner shield 120 in the sixth embodiment, the same mask shield 20 as in the first embodiment can be used without locking the strap.

Next, the seventh embodiment of the present invention is shown in FIGS. 19 to 21.

In this embodiment, a three-dimensional frame 140 as shown in FIG. 19 is inserted and developed into a flexible mask 130 such as felt, non-woven fabric, or paper as shown in FIG. 20.

FIG. 21 shows the usage state of the seventh embodiment.

FIG. 22 shows a modified example of the three-dimensional frame 140.

Next, FIG. 23 shows an eighth embodiment of the present invention provided with a flat mask and a parasol-shaped auxiliary tool (referred to as a mask parasol) for providing a space in the breathing part of the mouth and nose when wearing a flat mask containing parallel pleats. -Shown in FIG.

The pleats are expanded according to the curve of the face when the pleated mask 150 is used, and the mask 150 becomes a curved surface. Due to the decrease in the internal pressure around the nose and mouth, the mask 150 adheres to the mouth and nose due to the atmospheric pressure, and saliva, sweat, lipstick, etc. to the mask 150 adhere to the mask 150, and breathing becomes difficult.

This embodiment creates a space in which the mask filter does not come into direct contact with the mouth and nose of the user 10 when the rigidity of the pleated mask 150 or the main body of the integrated filter is insufficient. The mask umbrella is an application of the same concept as the method of forming a three-dimensional curved surface from the concave side, which is the same as the three-dimensionalization in the deployment of an umbrella, to a mask whose shape or design does not have rigidity in the mask body.

As shown in FIG. 23, a point (referred to as a non-slip point) 152 having a vertical perforation at an arbitrary position on the woven wire of the pleated mask 150, or a point (referred to as a non-slip point) having a non-slip function of forming an angle before and after a right angle by adhesion, rivet, etc. Add.

As shown in FIG. 24, the non-slip points 152 are set at arbitrary locations on the pleated mask 150, and are expandable within three or more locations, or if there are two locations, within polygonal points provided in a plurality of pairs. As shown in FIG. 25, using the elastic deformation of the mask parasol 160 made of natural material, synthetic resin, and metal material, it can be developed according to the curved surface, or it can be developed according to the curved surface, or the curved surface can be shaped according to the ridgeline of the point. By keeping the mask parasol 160, which is the body, within the points, as shown in FIG. 26, the pleated mask 150 is made three-dimensional, and a space is secured between the mouth and nose and the mask filter when breathing in, and the mask is masked. Improves comfort during use. Furthermore, it suppresses deterioration of filter performance due to stains on the mask and moisture absorption.

Further, by adding a filter to the mask umbrella 160 shown in the figure, it is possible to add a function of further suppressing deterioration of the mask filter function due to humidity and adhesion of lipstick and cosmetics.

Next, the ninth embodiment of the present invention in which the string point is provided on the front surface of the mask is shown in FIGS. 27A, 27B and 28.

As shown in FIG. 27A, by arranging the plurality of string points 170 inside the end portion of the mask 130, the string 180 suppresses the mask 130 surface from above (front), and the gap of the rebound portion of the end portion of the mask 130 is reduced. It can be suppressed.

The distribution of the force to the portion where the mask 130 is pulled sideways and the portion where the mask 130 is held is the primary strings A-SP1-taken from the string points A, B, and C of the mask body of the string set points SP1 and SP2 in FIG. 27B. This can be done by setting the length between B and SP2-C and adjusting the angle θ.

The position setting of the string set point SP1 can be changed as shown in FIG. 27B depending on which position on the line connecting AB, and the force for pulling the mask 130, the force for suppressing it, and the part for suppressing it can be adjusted.

The positions of the string set points SP1 and SP2 between AB and BC shall be fixed or adjustable secondary string points, and the mounting string 180 shall be connected there.

In this embodiment, the front and back can be known by the presence or absence of the string point 170, and the front and back cannot be erroneously attached.

In the ninth embodiment or when the mask shield 70 is used from above the pleated mask 150, the filter may hit the face of the user 10 during breathing due to the improvement of airtightness. In order to prevent this, as in the tenth embodiment shown in FIG. 29, a filter support 190 is provided, the repulsive force of the component material is used from the inside of the pleated mask 150, and the pleats are pleated by the hook point in the pleated fold or the dedicated filter. By expanding outside the mask 150, a space can be formed like a parasol between the mouth and the mask 150. In this case, the area of the pleated mask 150 can be further increased by pleating, as compared with the area expansion by making the cup-shaped filter three-dimensional.

The eleventh embodiment of the present invention is shown in FIG.

In the present embodiment, in the same configuration as the second embodiment shown in FIG. 5, a low pressure tube 200 for adhesion is inserted between the filter 76 and the face of the user 10 to improve the adhesion of the mask shield 70 to the face. It is an enhanced one.

The close contact low pressure tube 200 has an elliptical cross section as shown in FIG. 31A, and has a ring shape as a whole that matches the shape of the mask shield 70 as shown in FIG. 31B.

The low-pressure tube 200 for close contact is made of rubber, for example, and the inside thereof is a closed space that is shielded from the outside air. Is filled. Therefore, the cross-sectional shape of the low-pressure tube 200 for close contact is not a circle when filled with a fluid equal to or higher than the outside air pressure, and because the amount of fluid inside is small, it has an elliptical shape different from the original cross-sectional shape. Become.

The ratio of the semi-major axis radius to the semi-minor axis radius of the ellipse can be, for example, 2: 1.

The relationship between the semi-major axis and semi-minor axis of the ellipse and the area of the ellipse, the perimeter, and the ellipse ratio is shown in Table 1 below.

Therefore, even if the peripheral length is the same, that is, the same low pressure tube 200 for close contact, if the amount of fluid to be enclosed is changed and the internal volume, that is, the cross-sectional area of the low pressure tube 200 for close contact is changed, the long axis The ratio of the radius and the semi-major axis, that is, the ellipticity can be set arbitrarily.

The fluid in the close contact low pressure tube 200 is not affected by the repulsive force of the elastic deformation of the close contact low pressure tube 200, and when a partial pressure is applied, the fluid is evenly transmitted into the close contact low pressure tube 200 according to Pascal's law. ..

Therefore, the portion where pressure is applied and the portion where pressure is not applied are related, the shape is dented in the convex portion of the face of the user 10, and the concave portion is bulged so as to fill the gap in the gap portion. Both pressures are evenly distributed. As a result, the vertical cross-sectional shape of the low-pressure tube 200 for close contact is changed as illustrated in FIG. 32 with respect to the convex concave portion corresponding to the face of the user 10.

That is, when the partner is a convex surface, the fluid in the low pressure tube 200 for close contact is pushed away into the low pressure tube 200 for close contact to become a pressure, and is transmitted as pressure to the surface of the low pressure tube 200 for close contact where the pressure is the least applied. .. The pressure replaces the pressure that fills the wide gaps between the faces, and the elliptical shape changes in part to be closer to a circular shape, and in the protruding part it is crushed from a wide ellipse to a plane. The shape changes so as to be close to each other, and as a result, it acts to fill the gap between the low pressure tube 200 for close contact and the face of the user 10.

Therefore, the shape is adjusted according to the face of the user 10, which is an advantage of the first to tenth embodiments, and not only the gap between the contact surface between the user 10 and the mask is suppressed, but also the dynamic situation such as conversation and breathing is suppressed. It can flexibly change its shape to adapt to changes in the contact surface, and in addition to its basic functions, it can also maintain airtightness.

That is, as illustrated in FIG. 33, the low pressure tube 200 for close contact does not apply a large repulsive force to the face of the user 10 at the protruding portion, but applies pressure to the portion where there is a gap between the face of the user 10 and the mask body. It has a function of filling the gap by giving and expanding, and at the same time, uniformly distributing the crimping force to the contact portion between the face of the user 10 and the mask.

On the other hand, in the conventional method, even when a material with weak elastic deformation repulsion is used, repulsion of the material is recognized against the convex portion of the user's face. Even if it has a tube shape, if the gas sealed in it is in equilibrium with the atmospheric pressure, the fluid is compressed, and the force is transmitted as pressure inside the tube, and as pressure on the convex part of the object. It is transmitted. At that time, the pressure in the tube is applied to the entire tube, and it is not possible to disperse the pressure evenly with respect to the unevenness of the object, and a higher pressure is applied to the convex portion.

Therefore, with the conventional one, when the object had irregularities, it was not possible to make them adhere with even pressure, and it was not possible to achieve the adhesion of the mask without applying strong crimping to a part. On the other hand, according to the eleventh embodiment of the present invention, by adopting a low pressure tube different from the conventional sealing method, any of the unevenness of the object can be obtained within the range of the volume change of the tube with respect to the unevenness of the object. In terms of location, according to the law based on Pascal's principle, it is possible to form a shape along unevenness while applying uniform pressure at any location on the contact surface.

In the eleventh embodiment, the low pressure tube 200 for close contact was combined with the second embodiment of the single frame and single filter type, but it is also possible to combine with other embodiments.

FIG. 34 shows an example of the state in which the mask shield 70 and the low pressure tube 200 for close contact are assembled, and FIG. 35 shows an example of the state after assembling.

A frame grip 210 as illustrated in FIGS. 36A to 36D is adhered to a key point of the low pressure tube 200 for close contact, and the end portion of the mask shield 70 wound around the filter 76 is inserted and fixed thereto.

FIG. 36A shows an example of a single upper joining clip, FIG. 36B shows an example of a single horizontal joining clip, FIG. 36C shows an example of a double upper joining clip, and FIG. 36D shows an example of a double vertical / horizontal joining clip.

The subject of the present invention is not limited to measures against coronavirus and pollinosis, but can be similarly applied to the removal of dust, aerosols and the like.

The mask shield of the present invention can be used for removing dust, aerosols, etc., as well as measures against coronavirus and hay fever.

10 ... User 12 ...

Flat mask

20, 70, 80, 90 ... Mask shield 22 ... Inner frame 24 ... Outer frame 24A ...

Strap arm

24B, 74B ... Strap hole 40 ...

Strap

50, 52, 54, 56, 58, 76 , 112, 122 ...

Filter

72, 82, 92 ... Inner frame part 73 ...

Joint part

74, 84, 94 ... Outer frame part 74A ... Strap locking convex part 100 ... Double mask shield 110 ... Outer shield 120 ... Inner shield 130 ... Mask 140 ... Frame 150 ... Pleated mask 152 ... Non-slip point 160 ... Mask parasol 170 ... String point 180 ... String 190 ... Filter support 200 ... Low pressure tube for close contact 210 ... Frame grip

Claims

A mask shield characterized by being equipped with a space forming means for forming a space between the user's mouth and nose and the filter.
The space forming means
An inner frame that is attached to the user's face and can be deformed according to the shape of the user's face,
An outer frame arranged in front of the inner frame and
The mask shield according to claim 1, wherein the mask shield is provided.
The mask shield according to claim 2, wherein the inner frame and the outer frame are formed of a single plate, and the outer frame is raised from the inner frame.
The mask shield according to claim 2, wherein a locking means for locking the strap to be hung on the user's ear is provided on the outer frame.
Any of claims 2 to 4, wherein the filter is mounted between the inner frame and the user's face, the outer frame, or at least around the inner frame and the outer frame. The mask shield described in.
The mask shield according to claim 1, wherein the space forming means is a parasol-shaped three-dimensional object inserted between the user's face and the filter.
The space forming means is locked to a plurality of string points formed on the surface of the filter to form a plurality of strings that pull the surface of the filter, and the space is created by pulling the strings locked to the string points. The mask shield according to claim 1, wherein the mask shield is formed.
The mask shield according to any one of claims 1 to 7, further comprising a low-pressure tube for close contact for bringing the frame of the space forming means into close contact with the face of the user.
The mask shield according to claim 8, wherein the low-pressure tube for close contact has an overall shape of a ring.
The mask shield according to claim 8 or 9, wherein the low-pressure tube for close contact has an elliptical cross-sectional shape.
The mask shield according to any one of claims 8 to 10, wherein the low-pressure tube for close contact is filled with a fluid.
The mask shield according to any one of claims 8 to 11, wherein a frame clip for locking the inner frame is fixed to the close contact low pressure tube.
A multiple mask shield, characterized in that the mask shield according to any one of claims 1 to 12 is arranged in multiple layers.