Mask inner

Abstract

[Problem] Provided is a mask inner which does not increase in volume when stored, can enhance an effect of a filtering function with respect to pollen / dust and bacteria / viruses, that is an inherent objective of a mask and, can make inhalation smooth during wearing of the mask, by forming a space between the mask and a face without being bulky when stored, and by securing a wide inhalation area for external air that has passed through a filter according to inhalation. In addition, provided is a mask inner that can prevent the infiltration of air from the outside of the filter by making it difficult for a gap to be formed in an upper side and between both sides of the inner, and that can prevent leaking of breath to thereby prevent spectacles from being easily clouded. [Solution] This mask inner 10 is disposed and held inside the mask, the mask inner 10 being configured to have an opening 12 for air passage, to be able to have a substantially planar shape in a non-use state and a solid shape in a use sate, and to be able to suppress deformation of a mask toward a lower part 3 side of the nose when a wearer 1 inhales by maintaining the solid shape in a use state.

Description

[Technical Field]

[0001] The present invention relates to a mask inner that is attached to a mask. [Background technology]

[0002] Conventionally, masks (hygienic masks) worn on the face to cover the mouth and nose have been known to fit tightly to the face, pressuring the nose and mouth and preventing smooth breathing. In response to this, it has been proposed to wear a three-dimensional inner layer between the mask and the face to create space between the mask and the face, thereby preventing pressure from the mask and promoting smooth breathing (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-288109 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional devices such as those disclosed in Patent Document 1 have a problem in that they tend to be bulky due to their three-dimensional shape.

[0005] Furthermore, if gaps are formed at the top or sides of the inner layer, air may enter from outside the filter, reducing the effectiveness of preventing the inflow of droplets, etc., or there is a risk of breath leakage, making glasses more likely to fog up.

[0006] Therefore, the object of the present invention is to provide a mask inner that is not bulky during storage, and that enhances the effectiveness of the filter function against pollen, dust, bacteria, and viruses, which is the original purpose of a mask, by creating space between the mask and the face and keeping a wide area for intake of filtered outside air during breathing, while also allowing smooth breathing when wearing the mask.

[0007] Another object of the present invention is to provide a mask inner that creates space between the mask and the face, thereby maintaining a wide area for the intake of outside air that passes through the filter as breathing occurs, thereby making breathing smoother when wearing the mask, and also reduces the occurrence of gaps at the top and sides of the inner, thereby reducing the inflow and outflow of air outside the filter and improving the effectiveness of preventing the inflow of droplets, etc., and preventing breath leakage and making it less likely for glasses to fog up. [Means for solving the problem]

[0009] In order to solve this problem, Claim 1 The invention is a mask inner that is arranged and held inside a mask, has openings for air passage, can be made into a substantially flat shape when not in use, and is configured to have a three-dimensional shape when in use, and is configured to suppress deformation of the mask toward the lower part of the nose when the wearer inhales by maintaining the three-dimensional shape when in use, has left and right overlapping parts that are folded and overlapped about the center in the vertical direction to form a substantially flat shape when not in use, and by unfolding the left and right overlapping parts, it becomes a three-dimensional shape when in use, and when in use, it covers around the nose of the wearer, forming a space between the mask and the face.

[0010] Also, claims 2 The invention is 1 In addition to the configuration described above, the left and right overlapping portions are characterized in that their inner edge portions, which are formed in opposing substantially arc shapes, are fastened together by fastening means.

[0012] Also, claims 3The invention is a mask inner that is arranged and held inside a mask, and has an inner body that is configured to maintain a three-dimensional shape when in use, thereby suppressing deformation of the mask toward the lower part of the nose when the wearer inhales, and the inner body has, at its center in the vertical direction, a continuous part that is continuous in the center, and cut-off parts where the top, bottom, left and right of the continuous part are separated, and the inner edges of the cut-off parts that face left and right are connected to each other by a connecting means, so that both left and right ends of the lower part are each biased inward in the left and right directions, and the inner body is held on the face by the biasing force of the both left and right ends inward in the left and right directions pressing against the wearer's face.

[0013] Also, claims 4 The invention is 3 In addition to the configuration described above, the fastening means is characterized in that a protruding piece-like overlap portion is used on at least one of the inner edge portions of the separated portions facing each other on the left and right.

[0014] Also, claims 5 The invention is a mask inner that is arranged and held inside a mask, and is characterized by having an inner body that is configured to maintain a three-dimensional shape when in use, thereby suppressing deformation of the mask toward the lower part of the nose when the wearer inhales, and a pleated portion that is formed on the periphery of the upper position of the inner body and is configured to fit closely to the face of the wearer, and the pleated portion is not formed on the periphery of the lower position of the inner body.

[0015] Also, claims 6The invention is a mask inner that is arranged and held inside a mask, and has an inner body that is configured to maintain a three-dimensional shape when in use, thereby suppressing deformation of the mask toward the lower part of the nose when the wearer inhales, and pleated portions that are formed on the periphery of the upper position of the inner body and are configured to fit closely to the wearer's face, and is characterized in that the pleated portions have first pleated portions located at the rear and second pleated portions located at the front so as to fill the gaps between the first pleated portions. [Effects of the Invention]

[0021] Claim 1 ,2 According to this invention, the mask inner is configured to be approximately flat when not in use and three-dimensional when in use. Maintaining the three-dimensional shape when in use prevents the mask from deforming downwards around the nose when the wearer inhales. By storing the mask in its approximately flat, unused shape, it is possible to store multiple mask inners together without taking up too much space. Furthermore, because the mask inner maintains its three-dimensional shape when in use, even when used, it creates a sufficient space between the mask and the face, maintaining a large area for the filtered air to be inhaled during breathing. This enhances the mask's intended filtering function against pollen, dust, bacteria, and viruses, while also allowing for smooth breathing when wearing the mask. Furthermore, even if a mask loses its three-dimensional retention and no longer provides sufficient space around the mouth, it can still be reused by using this mask inner as long as it still functions as a filter, contributing to resource conservation. Furthermore, maintaining space between the mask and the mouth prevents makeup, such as lipstick, from smudging.

[0022] Also, claim 1 ,2 According to the invention, the overlapping parts, which are overlapped in an approximately flat shape when not in use, can be simply opened and unfolded to transform into a three-dimensional shape when in use, so that the container can be easily transformed from the unused state to the used state.

[0024] Also, claims 3,4 According to the invention, by maintaining the three-dimensional shape of the inner body when in use, a space is created between the mask and the face, keeping the area for intake of outside air that passes through the filter during breathing wide, making it possible to breathe smoothly when wearing the mask, and also the left and right ends of the lower part of the inner body are configured to be biased inward in the left and right directions, and this biasing force presses against the face, holding the inner body against the face, making it difficult for the mask inner to slip off the face.

[0026] Also, claims 5,6 According to the invention, by maintaining the three-dimensional shape of the inner body when in use, a space is created between the mask and the face, keeping the area for inhaling outside air through the filter when breathing wide, making it possible to breathe smoothly when wearing the mask, and by forming pleats around the periphery at the upper position of the inner body and fitting it closely to the face, it is difficult for gaps to form at the top of the mask inner, reducing the inflow and outflow of air outside the filter, thereby improving the effectiveness of preventing the inflow of aerosols containing droplets, viruses, bacteria, etc., pollen, dust, etc., preventing breath leakage, making it difficult for glasses to fog up, and improving the effectiveness of preventing the outflow of aerosols containing droplets, viruses, bacteria, etc.

[0027] Also, claims 6 According to the invention, the pleats have a first pleat located at the rear and a second pleat located at the front so as to fill the gap, making it more difficult for gaps to form at the top of the mask inner. [Brief explanation of the drawings]

[0034] [Figure 1] 1 is a plan view of a state in which the mask inner according to the first embodiment of the present invention is used. [Figure 2] FIG. 2 is a development view of the mask inner according to the embodiment. [Figure 3] FIG. 2 is a perspective view of the mask inner according to the embodiment when it is placed on the face in use. [Figure 4] FIG. 10 is a perspective view of a modified mask inner according to the embodiment when placed on the face in use. [Figure 5] FIG. 10 is a plan view of a state in which the mask inner according to the second embodiment of the present invention is in use. [Figure 6] FIG. 2 is a plan view of the mask inner according to the embodiment in an unused state. [Figure 7] FIG. 2 is a perspective view of the mask inner according to the embodiment when it is placed on the face in use. [Figure 8] FIG. 10 is a plan view of a state in which the mask inner according to the third embodiment of the present invention is in use. [Figure 9] FIG. 2 is a plan view of the mask inner according to the embodiment in an unused state. [Figure 10] FIG. 2 is a perspective view of the mask inner according to the embodiment when it is placed on the face in use. [Figure 11] FIG. 10 is a plan view of a state in which the mask inner according to the fourth embodiment of the present invention is in use. [Figure 12] FIG. 2 is a development view of the mask inner according to the embodiment. [Figure 13] FIG. 2 is a plan view of the mask inner according to the embodiment in an unused state. [Figure 14] FIG. 2 is a perspective view of the mask inner according to the embodiment when it is placed on the face in use. [Figure 15] FIG. 10 is a plan view of the mask inner according to the fifth embodiment of the present invention in use. [Figure 16] FIG. 2 is a development view of the mask inner according to the embodiment. [Figure 17] FIG. 2 is a plan view of the mask inner according to the embodiment in an unused state. [Figure 18] FIG. 2 is a perspective view of the mask inner according to the embodiment when it is placed on the face in use. [Figure 19] FIG. 10 is a development view of the front side of a first modified example of the mask inner according to the embodiment. [Figure 20] FIG. 10 is a development view of the back side of a first modified example of the mask inner according to the embodiment. [Figure 21] FIG. 10 is a development view for explaining a second modified example of the mask inner according to the embodiment. [Figure 22] FIG. 10 is a development view of the front side of a second modified example of the mask inner according to the embodiment. [Figure 23] FIG. 10 is a development view of the back side of a second modified example of the mask inner according to the embodiment. [Figure 24] FIG. 10 is a plan view of a state in which the mask inner according to the sixth embodiment of the present invention is in use. [Figure 25] FIG. 2 is a side view of the mask inner according to the embodiment in use. [Figure 26] FIG. 2 is a perspective view of the mask inner according to the embodiment when it is placed on the face in use. [Figure 27] FIG. 2 is a plan view of the mask inner according to the embodiment in an unused state. [Figure 28] FIG. 2 is an explanatory diagram of a mask inner according to the same embodiment. [Figure 29] FIG. 10 is a plan view of a first modified example of the mask inner according to the embodiment in an unused state. [Figure 30] FIG. 10 is a plan view of a second modified example of the mask inner according to the embodiment in use. DETAILED DESCRIPTION OF THE INVENTION

[0035] [First embodiment of the invention] A first embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG.

[0036] 1 to 3 show a first embodiment of the present invention.

[0037] The mask inner 10 according to the first embodiment of the present invention is arranged and held on the back side (face 2 side) of various masks, such as so-called sanitary masks, to form a space between the mask and the face 2, preventing pressure from the mask and promoting smooth breathing.

[0038] 1 and 3, the mask inner 10 of this embodiment has an inner body 11 that is configured to have a three-dimensional shape when in use and forms a space K. This inner body 11 can assume a substantially flat shape when not in use, such as during storage, allowing multiple mask inners 10 to be stored stacked together, thereby enabling storage of a large number of mask inners 10 without taking up too much space. Specifically, as shown in FIG. 2, the mask inner 10 is made of a substantially flat material such as paper, and is formed into a substantially flat shape by overlapping two overlapping portions 20 of substantially the same shape one on top of the other so that they have the same shape.

[0039] These overlapping portions 20 are overlapped and the inner edge portions 21 are fastened together by sewing, bonding, sealing, etc., and similarly the outer edge portions 22 are fastened together by sewing, bonding, sealing, etc., to form the inner body 11 overlapped in a substantially flat shape. When the overlapping portions 20 are opened up and down at the unsealed portions (the upper and lower positions in FIG. 2) from this overlapping state and unfolded, a three-dimensional mask inner 10 can be formed as shown in FIGS. 1 and 3.

[0040] In this embodiment, openings 12 are provided in most locations on the surface of inner body 11, improving breathability and allowing smooth breathing when inner body 11 is worn on face 2. The openings 12 may be of any appropriate size and shape, and examples include round holes as shown in Figures 1 and 2 in this embodiment, as well as smaller or larger openings, shapes other than round, such as square or triangular, and even long, thin slits, lattice structures, and mesh structures made of woven material.

[0041] Additionally, there is a portion of the upper edge 13 of the inner body 11 where no opening 12 is provided, and this portion is located around the nose. The portion that abuts this portion is a portion where no opening 12 is provided to prevent the glasses from fogging up due to breath, thereby preventing breath leakage.

[0042] In this embodiment, a mask attachment portion 14 is provided in the approximate center above the upper edge 13. This attachment portion 14 is a portion that protrudes upward from the inner body 11. After the inner body 11 is placed inside the mask, the attachment portion 14 is folded back toward the mask (outside) to attach to the mask. The attachment portion 14 may be designed to be attached simply by folding it back, or may be provided with double-sided tape or coated with adhesive after folding it back, thereby firmly attaching it to the mask. Alternatively, the attachment portion 14 may not have a protruding portion and may be attached to the mask by other means, such as double-sided tape, adhesive material, or adhesive. The location of the attachment portion 14 is not limited to the center, and any number of attachment portions may be provided at any desired locations.

[0043] The material of the mask inner 10 is not limited to paper. It may be made of polyethylene-laminated paper pulp (similar to the inside of a paper cup), polyvinyl chloride resin, polyester, polystyrene, polyethylene, polypropylene, polyurethane, silicone, metal (copper, aluminum, etc.), carbon fiber, glass fiber, PET resin, cotton fiber, wool fiber, hemp fiber, etc. It may also be made of shape-retaining plastic, shape-memory plastic, shape-memory polymer, etc. It may also be made of a combination of multiple materials, not just a single material. For example, if the inner material alone cannot maintain its three-dimensional shape when in use, and a frame structure is used to maintain the three-dimensional shape, the outer frame and inner parts may be made of different materials.

[0044] Furthermore, in this embodiment, the portion covering the area around the nose of the face 2 (specifically, the upper position of the inner body 11) has a locking portion 15 that fits tightly against the face 2 to further prevent breath leakage. The locking portion 15 in this embodiment is formed in fine pleats, and the fine pleats allow it to adhere to the face 2. This, together with the absence of the opening 12 in the upper edge portion 13, more reliably prevents breath leakage. Furthermore, the face 2 side of the locking portion 15 may have a member (e.g., an adhesive member) made of a natural material that is harmless to the human body and unlikely to cause allergies, for example, to allow it to adhere to the face 2 more safely and reliably.

[0045] In addition to the engaging portion 15, for example, in areas such as the peripheral edges of the inner body 11, which are preferably attached to the face 2 or which may be attached to the face 2, a member (for example, an adhesive member) made of natural materials that are harmless to the human body and unlikely to cause allergies may be provided to allow the mask to be attached to the face 2 more safely and securely.

[0046] In this embodiment, the inner body 11 is configured to cover the area below the chin as shown in Fig. 3, but this is not limited thereto. There may be a pattern in which the inner body 11A is not provided in the chin area from top to bottom, as in the mask inner 10A shown in Fig. 4. When the chin area is open in this way, there is less obstruction to breathing, making breathing easier and making it easier to talk even while wearing the mask inner 10A. Note that other configurations are the same as those in the first embodiment, so the same numbers are used with the addition of "A" and their explanations will be omitted.

[0047] [Embodiment 2 of the Invention] Next, a second embodiment of the present invention will be described with reference to FIGS.

[0048] 5 to 7 show a second embodiment of the present invention. Note that the same components as those in the first embodiment are given reference numerals obtained by adding "100" to the reference numerals in the first embodiment, and the description thereof will be omitted.

[0049] As shown in Figures 5 and 7, the mask inner 110 according to the second embodiment of the present invention has an inner body 111 that is configured to have a three-dimensional shape when in use and forms a space K. This inner body 111 can be configured to have a substantially flat shape when not in use, such as during storage, allowing multiple mask inners 110 to be stacked for storage, thereby allowing a large number of mask inners 110 to be stored without taking up too much space. Specifically, as shown in Figure 6, the mask inner 110 is configured with a flat-shaped member 120 made of a material such as paper, and has folding sections 116, 117 on the upper left and right sides. When these folding sections 116, 117 are both folded so that they are not visible, the folding causes a predetermined bulge to form a three-dimensional shape, thereby constituting the three-dimensional shape in use.

[0050] Specifically, folding sections 116, 117 have a substantially isosceles triangular shape, and when folded so that the center line of the isosceles triangle is hidden, they are configured in use to have a three-dimensional shape that protrudes on the opposite side of the fold. Note that folding sections 116, 117 may be attached with double-sided tape, hook-and-loop fastener, adhesive, or the like, or may have concave and convex shapes formed in the relevant locations that are engaged by fitting them together, or any other suitable means may be used to engage them.

[0051] Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIGS.

[0052] 8 to 10 show a third embodiment of the present invention. Note that the same components as those in the first and second embodiments are given reference numerals obtained by adding "200" to the reference numerals in the first embodiment, and the description thereof will be omitted.

[0053] As shown in Figures 8 and 10, the mask inner 210 according to the third embodiment of the present invention has an inner body 211 that is configured to have a three-dimensional shape when in use and forms a space K. This inner body 211 can be configured to have a substantially flat shape when not in use, such as during storage, allowing multiple mask inners 210 to be stacked for storage, thereby allowing a large number of mask inners 210 to be stored without taking up too much space. Specifically, as shown in Figure 9, the mask inner 210 is configured from a flat-shaped member 220 made of a material such as paper, and has only one folding portion 216 at the diagonally lower right corner. When this folding portion 216 is folded in both directions so that it cannot be seen, the folding causes a predetermined bulge to form a three-dimensional shape, thereby constituting the three-dimensional shape in use.

[0054] Specifically, folding section 216 has a substantially isosceles triangular shape that is larger than folding sections 116, 117 of the second embodiment, and is configured in use so that by folding the triangle so that the center line is hidden, it presents a three-dimensional shape that protrudes on the opposite side of the folded portion. Note that folding section 216 may be attached with double-sided tape, hook-and-loop fastener, adhesive, or the like, or may have concave and convex shapes formed in the relevant portion that are engaged by fitting them together, or any other suitable means may be used to engage with each other.

[0055] [Fourth embodiment of the invention] Next, a fourth embodiment of the present invention will be described with reference to FIGS.

[0056] 11 to 14 show a fourth embodiment of the present invention. Note that the same components as those in the first to third embodiments are given reference numerals obtained by adding "300" to the reference numerals in the first embodiment, and the description thereof will be omitted.

[0057] 11 and 14, the mask inner 310 according to the fourth embodiment of the present invention has an inner body 311 that is configured to have a three-dimensional shape when in use and forms a space K. This inner body 311 can assume a substantially flat shape when not in use, such as during storage, allowing multiple mask inners 310 to be stored stacked together, enabling storage of a large number of mask inners 310 without taking up too much space. Specifically, as shown in Fig. 12, the mask inner 310 is made of a substantially flat material such as paper, and is formed into a substantially flat shape by a bellows member 320 that is folded in a bellows shape.

[0058] Specifically, a substantially planar member as shown in Fig. 13 is folded to form bellows member 320 as shown in Fig. 12. When bellows member 320 is unfolded, a three-dimensional mask inner 310 as shown in Figs. 11 and 14 can be formed.

[0059] In this embodiment, the openings 12, 112, and 212 are not shown as in the first to third embodiments, but are formed in the same manner.

[0060] Fifth Embodiment Next, a fifth embodiment of the present invention will be described with reference to FIGS.

[0061] 15 to 18 show a fifth embodiment of the present invention. Note that the same components as those in the first to fourth embodiments are given reference numerals obtained by adding "400" to the reference numerals of the first embodiment, and the description thereof will be omitted.

[0062] 15 and 18, the mask inner 410 according to the fifth embodiment of the present invention has an inner body 411 that is configured to have a three-dimensional shape when in use and forms a space K. This inner body 411 can assume a substantially flat shape when not in use, such as during storage, allowing multiple mask inners 410 to be stored stacked together, thereby enabling storage of a large number of mask inners 410 without taking up too much space. Specifically, as shown in Fig. 16, the mask inner 410 is made of a substantially flat material such as paper, and as shown in Fig. 17, two overlapping portions 420 of substantially the same shape are overlapped on the left and right so as to form a substantially flat shape.

[0063] These overlapping portions 420 are overlapped with each other, and edge portions 421 formed in a substantially arc shape at the center position in Fig. 16 are fastened together by sewing, bonding, sealing, etc., to form an inner body 411 overlapped in a substantially flat shape. Then, when the overlapping portions 420 are opened to the left and right in this overlapping state (end portions other than edge portions 421 in Fig. 16) and unfolded, a three-dimensional mask inner 410 can be formed as shown in Figs. 15 and 18.

[0064] 16 and 17, round hole-shaped openings 412 are provided to improve breathability, but the present invention is not limited to this, and an inner body 411A may be formed of a member having a mesh structure 412A made of paper, cloth, or metal such as copper to improve breathability, as in a mask inner 410A of a first modified example shown in Figures 19 and 20. Furthermore, when a member having a mesh structure or a member made of a material such as cloth cannot maintain its three-dimensional shape when in use by itself, it may be possible to maintain the three-dimensional shape by providing a frame structure with an outer frame made of a material that can maintain the three-dimensional shape.

[0065] 19, the entire front surface of inner body 411A has mesh structure 412A, but as shown in FIG. 20, the edge portion on the back surface of inner body 411A (particularly upper edge portion 413A located around the nose) does not have mesh structure 412A and may be made of a material with no or low breathability. This non-breathable material may be attached or sewn to the mesh structure 412A member, or a mesh-structured front member and a back member having a frame-shaped non-breathable material attached to the mesh structure may be attached to each other. It is desirable that this material be a natural material that is harmless to the human body and unlikely to cause allergies.

[0066] In this way, if there is a portion of upper edge 413A of inner main body 411A located around the nose where mesh structure 412A is not provided, breath can be prevented from leaking from that portion, and glasses can be prevented from fogging up due to breath. Note that other configurations are the same as those in the above-mentioned embodiment 5, so the same numbers are assigned with the letter "A" added, and explanations will be omitted.

[0067] 21 to 23, a second modified mask inner 410B may have an overlapping portion 420B of an inner body 411B with a gap between a front member 425B (shown in FIG. 22) and a rear member 426B (shown in FIG. 23), and a mesh member 450B having a mesh structure as shown in FIG. 21 may be held in the gap. In this case, the front member 425B of the overlapping portion 420B shown in FIG. 22 has a coarse mesh structure or a structure with holes to improve breathability, and the rear member 426B of the overlapping portion 420B shown in FIG. 23 is made of a finely woven material to prevent the mesh member 450B from directly touching the face 2. In particular, if the mesh member 450B is made of a metal such as copper, it is preferable to prevent the mesh member 450B from coming into contact with the face 2, taking into consideration metal allergies and corrosion. Furthermore, it is preferable that the gap between the front side member 425B and the back side member 426B of the overlapping portion 420B be pocket-shaped, since this makes it easier to take in and out the mesh member 450B.

[0068] In addition, in case mesh member 450B cannot maintain its three-dimensional shape by itself, it is also possible to make either front member 425B or back member 426B or one of them have a frame structure with a frame made of a material that can maintain a three-dimensional shape, thereby enabling mask inner 410B to maintain its three-dimensional shape.

[0069] In addition, an ice pack can be placed in the pocket-like gap between front member 425B and back member 426B of overlapping portion 420B to provide a cooling effect as a measure against heat stroke. In this case, the three-dimensional structure has the advantage that the ice pack does not come into direct contact with the skin.

[0070] Furthermore, in this second modified example, there is a gap between the front side member 425B and the back side member 426B, but it is also possible to use only the front side member 425B and the back side member 426B without inserting a mesh member 450B or the like into the gap.

[0071] In Figure 21, for convenience, the left side of the expanded view of the mask inner shows the mesh member 450B completely inserted into the gap between the front member 425B and the back member 426B of the overlapping portion 420B of the inner body 411B, while the right side of the expanded view of the mask inner shows the mesh member 450B half inserted to show that the mesh member 450B is inserted into the gap between the front member 425B and the back member 426B of the overlapping portion 420B of the inner body 411B.

[0072] Furthermore, other configurations are the same as those in the fifth embodiment, so the same numbers are given with the letter "B" added, and the explanation will be omitted.

[0073] In this modification, unlike the first to fifth embodiments and the first modification, the attachment portions 14, 114, 214, 314, 414, 414A and the locking portions 15, 115, 215, 315, 415, 415A are not shown, but they may be formed in the same manner.

[0074] Sixth Embodiment Next, a sixth embodiment of the present invention will be described with reference to FIGS.

[0075] 24 to 28 show a sixth embodiment of the present invention. Note that the same components as those in the first to fifth embodiments are given reference numerals obtained by adding "500" to the reference numerals in the first embodiment, and the description thereof will be omitted.

[0076] As shown in Figs. 24 to 26, a mask inner 510 according to a sixth embodiment of the present invention has an inner body 511 that is configured to have a three-dimensional shape when in use and forms a space K. This inner body 511 can assume a substantially flat shape when not in use, such as during storage, allowing multiple mask inners 510 to be stored stacked together, thereby enabling storage of a large number of mask inners 510 without taking up too much space. Specifically, the mask inner 510 is made of a substantially flat material such as paper, and as shown in Fig. 27, has a left flat portion 516 and a right flat portion 517 that are laterally inverted and have substantially the same shape. In addition, in this embodiment, protruding piece-like overlap portions 518, 519 are provided on the upper and lower inner sides of the right flat portion 517, and all of these are formed in a substantially flat shape.

[0077] Then, by adhering the overlapping portions 518, 519 to the opposing positions of the left flat portion 516, the mask inner 510 is configured to have a three-dimensional shape with a raised central portion, as shown in Figures 24 and 26. Here, the overlapping portions 518, 519 are provided with double-sided tape, and by adhering this double-sided tape to the back side of the opposing positions of the left flat portion 516, the three-dimensional shape is achieved, but this is not limited to this. The overlapping portions may be secured by sewing, bonding, thermocompression bonding, or the like, thereby forming the three-dimensional inner main body 511 from the substantially flat inner main body 511. Furthermore, if there are no overlapping portions, there may be overlapping portions on both the left and right sides, as long as a suitable three-dimensional shape can be formed.

[0078] In this embodiment, pleats 515 are formed as engagement portions on the peripheral edge of the upper edge 513 (upper position) and the peripheral edge of the side portions of the inner main body 511. These pleats 515 are configured to bend freely and to fit closely to the face 2 of the wearer 1. Here, pleats 515 are formed in a chamfered rectangular shape, but this is not limitative and they may be formed in other shapes such as a substantially semicircular shape or a rectangular shape without chamfers.

[0079] In this embodiment, the upper edge 513 (upper position) of the inner body 511 is provided with an attachment portion 514 for engaging with the mask. Here, the attachment portion 514 is provided with double-sided tape at two locations, left and right, on the front surface of the upper position of the inner body 511, and the mask inner 510 is attached to the mask by adhering this double-sided tape to the back surface of the mask. The attachment portion 514 is not limited to double-sided tape, and any suitable configuration that produces a similar effect may be used. For example, hook-and-loop fasteners may be provided on both the mask side and the mask inner side, and the two may be attached together. Alternatively, an adhesive material such as an adhesive gel pad made of silicone or the like may be attached to both the mask side and the mask inner side, and the two may be attached together.

[0080] In this embodiment, the inner main body 510 is formed with folding aids 520 and 521 that indicate folding positions for fitting the inner main body 510 to the face 2 when worn by the wearer 1. Here, multiple mountain folds 520 and multiple valley folds 521 are formed in advance at predetermined positions so as to conform to the contours of the face 2. Here, the mountain folds 520 and the valley folds 521 are formed in a substantially vertical direction. Here, the folding aids 520 and 521 are formed with notches formed at the folding positions. The mountain folds 520 are notches formed on the front side of the inner main body 511, and the valley folds 521 are notches formed on the back side of the inner main body 511. This facilitates folding to the opposite side of the notches, facilitating mountain folds and valley folds, respectively. The folding aids 520 and 521 are not limited to notches, and any suitable configuration that produces a similar effect may be used. For example, fold lines corresponding to mountain folds and valley folds may be formed on the front and back sides by embossing to serve as folding aids.

[0081] 28, the inner body 511 is configured so that both left and right end portions of its lower part are biased inward in the left and right direction, and is formed to open smaller than the mouth 4 before use (shown by two-dot chain line), and when in use, it is opened and placed against the face 2 (shown by solid line), thereby generating a biasing force inward in the left and right direction at both left and right end portions, which presses against the face 2 from the left and right and holds the inner body 511 to the face 2. In addition, by further pressing down from above with the mask, the mask inner 510 is more securely held against the face 2.

[0082] 26, the lower part of the inner body 511 is an open part 522 that does not cover the mouth 4 or chin. This leaves the mouth open, and the mask inner 510 is not affected by jaw movement, so that it can be held firmly to the face 2 even when talking.

[0083] In this embodiment, the upper portion is substantially straight as shown in Fig. 27, which is a shape particularly suited to nonwoven masks with a straight upper portion, such as disposable masks. However, this is not limited to this, and the upper portion may be curved, as in the mask inner 510A of the first modified example shown in Fig. 29. This shape is particularly suited to the rounded upper portion of bifold masks, such as urethane masks, and is therefore suited to such bifold masks. Note that other configurations are the same as those in the sixth embodiment, and therefore the same numbers are given with the addition of "A" and their description will be omitted.

[0084] 30, the pleats may be configured to have a first pleat 515B located at the rear and having a shape similar to that of the pleats 515 of the sixth embodiment, and a second pleat 523B located at the front so as to fill the gap between the first pleats 515B. In this configuration, the gaps between the pleats 515B and 523B are more fully filled, so that the mask can fit more closely to the face 2 and eliminate any gaps. Note that the other configurations are the same as those of the sixth embodiment, so the same numbers with the letter "B" added are used and the description thereof will be omitted.

[0085] As described above, according to the mask inners 10, 10A, 110, 210, 310, 410, 410A, 410B, 510, 510A, 510B of the above-described embodiments, the mask inners 10, 10A, 110, 210, 310, 410, 410A, 410B, 510, 510A, 510B are configured to be able to have a substantially flat shape when not in use and to have a three-dimensional shape when in use, and are configured to suppress deformation of the mask towards the lower part of the nose 3 when the wearer 1 inhales by maintaining the three-dimensional shape when in use. Therefore, by keeping the mask inners in the substantially flat shape when not in use during storage, it is possible to store a large number of mask inners 10, 10A, 110, 210, 310, 410, 410A, 410B, 510, 510A, 510B together without taking up too much space. Furthermore, because the mask inners 10, 10A, 110, 210, 310, 410, 410A, 410B, 510, 510A, and 510B maintain a three-dimensional shape when in use. Even when the mask inners 10, 10A, 110, 210, 310, 410, 410A, 410B, 510, 510A, and 510B transform from a generally flat shape to a three-dimensional shape, they still maintain a sufficient space (K) between the mask and the face (2), ensuring a large area for the filtered outside air to be inhaled during breathing. This enhances the mask's intended filtering function against pollen, dust, bacteria, and viruses, while also allowing for smooth breathing when worn. Even if a mask loses its three-dimensional retention and no longer provides sufficient space around the mouth, as long as it still functions as a filter, the mask inners 10, 10A, 110, 210, 310, 410, 410A, 410B, 510, 510A, and 510B can be reused, contributing to resource conservation. Furthermore, maintaining space between the mask and the mouth helps prevent makeup, such as lipstick, from smudging.

[0086] Furthermore, by taking on a substantially flat shape when not in use, the mask inners 10, 10A, 110, 210, 310, 410, 410A, 410B, 510, 510A, and 510B can be folded while still attached to the mask, and can be stored compactly in a mask case or the like.

[0087] Furthermore, according to the mask inners 10, 10A, 110, 210, 310, 410, 410A, 410B, 510, 510A, 510B of the above-mentioned embodiments, openings 12, 112, 212, 412, 412A, 412B, 512, 512A, 512B are not provided in the upper edge portions 13, 13A, 113, 213, 313, 413, 413A, 413B, 513, 513A, 513B, and when formed into a three-dimensional shape, the upper edge portions 13, 13A, 113, 213, 313, 413, 413A, 413B, 513, 513A, 513B abut against the nose and the face 2 on both sides thereof, so that even when wearing glasses, breath does not leak from around the nose, and an anti-fogging effect can be achieved.

[0088] Furthermore, according to the mask inners 10, 10A, 110, 210, 310, 410, 410A, 410B, 510, 510A, 510B of the above-mentioned embodiments, the mask inners 10, 10A, 110, 210, 310, 410, 410A, 410B, 510, 510A, 510B have attachment portions 14, 14A, 114, 214, 314, 414, 414A, 514, 514A, 514B for engaging the mask inners 10, 10A, 110, 210, 310, 410, 410A, 410B, 510, 510A, 510B to the mask, so that the mask inners 10, 10A, 110, 210, 310, 410, 410A, 410B, 510, 510A, 510B can be securely held on the mask.

[0089] Furthermore, according to the mask inners 10, 10A, 410, 410A, 410B of the above-mentioned embodiments 1 and 5, the overlapping portions 20, 420, 420A, 420B, which are overlapped in an approximately flat shape when not in use, can be simply opened and unfolded to transform them into a three-dimensional shape when in use, so that they can be easily transformed from the unused state to the used state.

[0090] Furthermore, according to the mask inners 110, 210 of the above-mentioned embodiments 2 and 3, since they are formed in an approximately flat shape when not in use, they can be stored without taking up too much space, and can be easily transformed from an approximately flat shape to a three-dimensional shape by simply folding and stacking predetermined parts.

[0091] Furthermore, according to the mask inners 510, 510A, 510B of the sixth embodiment described above, by maintaining the three-dimensional shape of the inner main bodies 511, 511A, 511B in use, a space is created between the mask and the face 2, keeping a wide area for intake of outside air that passes through the filter when breathing, and enabling smooth breathing when wearing the mask. In addition, by forming pleated portions 515, 515A, 515B on the periphery at the upper position of the inner main bodies 511, 511A, 511B and fitting them closely to the face 2, gaps are less likely to form at the top of the mask inners 510, 510A, 510B, reducing the inflow and outflow of air outside the filter, thereby improving the effect of preventing the inflow of aerosols containing droplets, viruses, bacteria, etc., pollen, dust, etc., preventing breath leakage, making glasses less likely to fog up, and improving the effect of preventing the outflow of aerosols containing droplets, viruses, bacteria, etc.

[0092] Furthermore, according to the mask inner 510B of the second modified example of the sixth embodiment described above, the pleated portions 515B, 523B have a first pleated portion 515B located at the rear and a second pleated portion 523B located at the front so as to fill the gap, thereby making it more difficult for gaps to form at the top of the mask inner 510B.

[0093] Furthermore, according to the mask inners 510, 510A, 510B of the sixth embodiment described above, by maintaining the three-dimensional shape of the inner main bodies 511, 511A, 511B in use, a space is created between the mask and the face 2, keeping a wide area for intake of outside air that passes through the filter when breathing, and making breathing smoother when wearing the mask. In addition, by providing the attachment parts 514, 514A, 514B for engaging with the mask at the upper positions of the inner main bodies 511, 511A, 511B, it is less likely that a gap will be formed between the upper part of the mask and the upper part of the mask inner 510, 510A, 510B, thereby reducing the inflow and outflow of air through the gap between the mask and the mask inner 510, 510A, 510B without passing through the filter, and improving the effect of preventing the inflow of aerosols containing droplets, viruses, bacteria, etc., pollen, dust, etc., preventing breath leakage, making it less likely that glasses will fog up, and improving the effect of preventing the outflow of aerosols containing droplets, viruses, bacteria, etc.

[0094] Furthermore, according to the mask inners 510, 510A, 510B of the sixth embodiment, the attachment parts 514, 514A, 514B are formed of double-sided tape attached to the front surface of the upper portion of the inner body 511, 511A, 511B, so that the upper portion of the mask can be easily fastened to the upper portion of the mask inner 510, 510A, 510B, and gaps between the upper portion of the mask and the upper portion of the mask inner 510, 510A, 510B are less likely to occur, thereby improving the effectiveness of preventing the inflow and outflow of unfiltered air through gaps between the mask and the mask inner 510, 510A, 510B. Furthermore, by integrating the mask and the mask inner 510, 510A, 510B with the attachment parts 514, 514A, 514B, it is possible to prevent the mask and the mask inner 510, 510A, 510B from shifting even during strenuous movement, such as exercise.

[0095] Furthermore, according to the mask inners 510, 510A, 510B of the sixth embodiment described above, by maintaining the three-dimensional shape of the inner main body 511, 511A, 511B in use, a space is created between the mask and the face 2, keeping a wide area for intake of outside air that passes through the filter when breathing, and enabling smooth breathing when wearing the mask. In addition, the inner main body 511, 511A, 511B is formed with folding assist portions 520, 520A, 520B, 521, 521A, 521B that indicate folding positions for fitting the mask to the face 2 when worn by the wearer 1, thereby making it difficult for gaps to form in the mask inners 510, 510A, 510B and reducing the inflow and outflow of air outside the filter, thereby improving the effectiveness of preventing the inflow of aerosols containing droplets, viruses, bacteria, etc., pollen, dust, etc., preventing breath leakage, making it difficult for glasses to fog up, and improving the effectiveness of preventing the outflow of aerosols containing droplets, viruses, bacteria, etc.

[0096] Furthermore, according to the mask inners 510, 510A, 510B of the sixth embodiment described above, the folding assist portions 520, 520A, 520B, 521, 521A, 521B are configured with notches formed at the folding positions, so that the mask inners 510, 510A, 510B can be easily folded at the folding positions to fit the face 2, making it less likely that gaps will occur in the mask inners 510, 510A, 510B.

[0097] Furthermore, according to the mask inners 510, 510A, 510B of the sixth embodiment described above, by maintaining the three-dimensional shape of the inner bodies 511, 511A, 511B when in use, a space is created between the mask and the face 2, keeping the area for intake of outside air that passes through the filter during breathing wide, and making breathing smoother when wearing the mask. In addition, both left and right ends of the lower part of the inner bodies 511, 511A, 511B are configured to be biased inward in the left and right directions, and this biasing force presses against the face 2 to hold the inner bodies 511, 511A, 511B on the face 2, making it difficult for the mask inners 510, 510A, 510B to slip off the face 2.

[0098] Furthermore, according to the mask inners 510, 510A, 510B of the sixth embodiment described above, by maintaining the three-dimensional shape of the inner main bodies 511, 511A, 511B when in use, a space is created between the mask and the face 2, keeping the area for intake of filtered outside air during breathing wide, and allowing for smooth breathing when wearing the mask. In addition, since the lower parts of the inner main bodies 511, 511A, 511B form open parts 522 that do not cover the mouth 4 or chin, the mask inners 510, 510A, 510B can maintain their state without being affected by movement of the mouth 4 or chin caused by talking, and therefore the mask inners 510, 510A, 510B and the mask are less likely to slip off even when talking while wearing them.

[0099] The above-described embodiment has been described to facilitate understanding of the present invention, and is not intended to limit the present invention.

[0100] For example, in the above-described embodiment, the folding portion is configured at one or two locations, but this is not limitative, and the folding portion may be configured at three or more locations.

[0101] Furthermore, the components that make up the mask inner may consist of a single, approximately planar component when not in use, or may consist of multiple components that are overlapped or combined to form an approximately planar component when not in use.

[0102] In addition, the state of having a substantially flat shape when not in use includes both cases where the product is manufactured to have a substantially flat shape when manufactured, and cases where the product has a three-dimensional shape when manufactured (including cases where the three-dimensional shape is different from the three-dimensional shape when in use) and then comes to have a substantially flat shape when not in use by being folded, stacked, etc.

[0103] Furthermore, the shape and size of the mask inner are not limited to those described above, and may be appropriately determined depending on the purpose, mask shape, etc.

[0104] Furthermore, the mask inners of the above-described embodiments are not necessarily limited to those that are transformed from a substantially flat surface into a three-dimensional shape before use, and the present invention may also be applied to those that are formed into a three-dimensional shape from the beginning. [Explanation of symbols]

[0105] 1. Wearer 2. Face 3. Lower part of nose 4 mouths 10,110,210,310,410,410A,410B,510,510A,510B Mask inner 11,11,211,311,411,411A,411B,511,511A,511B Inner body 12, 112, 212, 412, 412A, 412B, 512, 512A, 512B openings (mesh structure) 13,113,213,313,413,413A,413B,513,513A,513B Upper edge 14,114,214,314,414,414A,514,514A,514B Mounting part 15,115,215,315,415,415A,515,515A Locking part (pleated part) 20, 420, 420A, 420B overlapping section 21 Inner edge 22 outer edge 116,117 Folding section 120,220 Flat-shaped members 320 Bellows 421,421A,421B Edge 425B Front side member 426B Back side member 450B Mesh material 515B First pleat (pleat, locking portion) 516 Left side flat section 517 Right side flat part 518 Glue section 519 Glue section 520 Mountain fold section (notch section, folding auxiliary section) 521 Valley fold (notch, folding auxiliary part) 522 Open area 523B Second pleat (pleat, locking part) K space

Claims

1. A mask inner that is disposed and held inside a mask, It has openings for air passage, It is configured to have a substantially planar shape when not in use and a three-dimensional shape when in use, The mask is configured to maintain a three-dimensional shape when in use, thereby suppressing deformation of the mask toward the lower nose when the wearer inhales, This mask inner is characterized by having left and right overlapping sections that are folded and overlapped around the center in the vertical direction to form a roughly flat shape when not in use, and by unfolding the left and right overlapping sections to form a three-dimensional shape when in use, and by covering the area around the wearer's nose to form a space between the mask and the face.

2. The mask inner according to claim 1, wherein the left and right overlapping portions are formed in opposing, generally arc-shaped shapes, and the inner edge portions thereof are fastened together by fastening means.

3. A mask inner that is disposed and held inside a mask, The mask has an inner body configured to maintain a three-dimensional shape when in use, thereby suppressing deformation of the mask toward the lower nose side when the wearer inhales, The inner body has, at its center in the vertical direction, a continuous central portion that is continuous, and cut-off portions where the top, bottom, left, and right of the continuous portion are separated, and the inner edges of the cut-off portions that face each other on the left and right are connected to each other by a connecting means, so that both left and right ends of the lower portion are each biased inward in the left and right directions, and the mask inner is characterized in that the inner body is held against the face by the biasing force of the both left and right ends inward in the left and right directions.

4. 4. The mask inner according to claim 3, wherein the fastening means comprises a projecting piece-like overlap portion provided on at least one of the inner edge portions of the separated portions facing each other on the left and right.

5. A mask inner that is disposed and held inside a mask, an inner body configured to maintain a three-dimensional shape in use, thereby suppressing deformation of the mask toward the lower nose side when the wearer inhales; a pleated portion formed on the periphery of the upper portion of the inner body and configured to fit closely to the face of the wearer; and The mask inner is characterized in that the pleated portion is not formed on the peripheral edge portion at the lower position of the inner body.

6. A mask inner that is disposed and held inside a mask, an inner body configured to maintain a three-dimensional shape in use, thereby suppressing deformation of the mask toward the lower nose side when the wearer inhales; a pleated portion formed on the periphery of the upper portion of the inner body and configured to fit closely to the face of the wearer; It has The mask inner is characterized in that the pleated portions have first pleated portions located at the rear and second pleated portions located at the front so as to fill the gaps between the first pleated portions.

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