mask

Abstract

The purpose of the present invention is to provide a mask with improved comfort. The mask comprises a mask body including a central portion that covers the mouth and a pair of lateral extensions that extend from both sides of the central portion and are positioned in both outer regions of the mouth on the head, and an elastic holding frame that extends from one of the pair of lateral extensions across the central portion toward the other of the pair of lateral extensions and presses the pair of lateral extensions toward both outer regions.

Description

Technical Field

[0007] , ,

[0001] This disclosure relates to a mask. Ku

Background Art

[0002] Patent Document 1 discloses a mask formed by folding a sheet.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Here, there is a demand to improve the wearing comfort of the mask.

[0005] Therefore, an object of the present disclosure is to provide a mask with improved wearing comfort.

Means for Solving the Problems

[0006] To solve the above problems, the mask includes a mask body including a central portion covering the mouth and a pair of lateral extension portions extending from both sides of the central portion and disposed in both outer side regions of the head on both outer sides of the mouth, and an elastic holding frame extending from one of the pair of lateral extension portions across the central portion toward the other of the pair of lateral extension portions and pressing the pair of lateral extension portions toward the both outer side regions.

[0007] ​Furthermore, the mask body comprises a central portion that covers the mouth, and a pair of lateral extensions that extend from both sides of the central portion and are positioned in the areas of the head that are on both sides of the mouth. The central portion includes a central frame holding portion that detachably receives the central frame portion of the elastic retaining frame, and each of the pair of lateral extensions includes an end frame holding portion that detachably receives a pair of mounting portions at both ends of the elastic retaining frame. [Effects of the Invention]

[0008] According to this disclosure, we can provide masks with improved comfort. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a perspective view showing the unfolded mask according to the embodiment. [Figure 2] Figure 2 is a perspective view showing the same mask. [Figure 3] Figure 3 is a perspective view showing the same mask. [Figure 4] Figure 4 is a plan view showing the folded mask. [Figure 5] Figure 5 is a cross-sectional view of the VV line in Figure 4. [Figure 6] Figure 6 shows the folds in the sheet. [Figure 7] Figure 7 shows an example of a fold for forming a bag-like portion. [Figure 8] This is a perspective view showing a mask related to the modified example shown in 8. [Modes for carrying out the invention]

[0010] {Embodiment} <Overall structure> Hereinafter, the mask according to the embodiment will be described. FIGS. 1 to 3 are perspective views showing the unfolded mask 20. FIG. 4 is a plan view showing the folded mask 20. FIG. 5 is a cross-sectional view taken along the line V-V of FIG. 4. In FIG. 1, a state where the unfolded mask 20 is worn on a person's face 10 is shown. FIG. 2 is a perspective view of the unfolded mask 20 viewed from the front side, and FIG. 3 is a perspective view of the unfolded mask 20 viewed from the rear. In FIG. 5, for convenience of explanation, the dimensions of each part may be exaggerated. Note that the state where the mask 20 is folded along the fold lines described later to form a flat shape is the folded state. The state where the mask 20 is spread out so as to be wearable on the face 10 is the unfolded state. For convenience of explanation, assuming a state where the mask 20 is worn on a person's face 10, the front, rear, left, right, top, and bottom with reference to the face 10 may be referred to.

[0011] The mask 20 includes a mask body 30 and an elastic holding frame 50.

[0012] The mask body 30 includes a central portion 32 and a pair of lateral extension portions 36.

[0013] The central portion 32 is a portion that covers the mouth 12 of the face 10. For example, the central portion 32 is a portion having a spread sufficient to cover the mouth 12. The central portion 32 may cover the nose 13 of the face 10. In this case, the central portion 32 is a portion having a spread sufficient to cover the mouth 12 and the nose 13.

[0014] The pair of lateral extension portions 36 extend from both sides of the central portion 32 and are portions disposed in the outer regions 15 on both sides of the mouth 12 of the face 10. The outer regions 15 on both sides of the mouth 12 are regions between the mouth 12 and the ears 14, for example, the cheeks.

[0015] The material forming the mask body 30 is not particularly limited. The mask body 30 is formed of, for example, a material that can pass air but can block particles. For example, the mask body 30 is formed of a non-woven fabric or a woven fabric.

[0016] The mask body 30 may have a single-layer structure or a laminated structure. When the mask body 30 has a laminated structure, the number of laminations is arbitrary. The particles blocked by the mask body 30 are, for example, floating substances in the air or droplets from the mouth or nose. The floating substances are, for example, viruses, bacteria, pollen or dust.

[0017] The elastic retaining frame 50 extends from one of the pair of lateral extensions 36 through the central portion 32 toward the other of the pair of lateral extensions 36. The elastic retaining frame 50 presses the pair of lateral extensions 36 toward both outer regions 15.

[0018] The elastic retaining frame 50 is formed of an elastic material that can return to its original shape. The elastic material may be, for example, a metal wire having spring properties. The metal wire having spring properties may be, for example, a steel wire or a piano wire having spring properties. The elastic material may be a resin.

[0019] The elastic retaining frame 50 includes a central frame portion 52 disposed so as to cross the central portion 32 and a pair of end portions 54 extending further from both ends of the central frame portion 52.

[0020] The central frame portion 52 may be formed, for example, in a shape curved so as to be convex forward. In this case, it is easy to keep the central frame portion 52 in a shape that bulges outward in accordance with the shape of the vicinity of the mouth 12 of the central portion 32. For example, the central frame portion 52 is formed so as to be curved in a V shape. The central frame portion 52 may be formed in a trapezoidal or arcuate curved shape.

[0021] The pair of end portions 54 bend from both end portions of the central frame portion 52 and extend in the same direction side. The minimum distance between the pair of end portions 54 may be smaller than the width of the face 10 of a general adult. For example, the minimum distance between the pair of end portions 54 may be smaller than 15c.

[0022] In this embodiment, the central frame portion 52 is bent in a V-shape. The pair of end portions 54 extend from both ends of the central frame portion 52 to the opposite side from the central frame portion 52. Furthermore, the distance between the pair of end portions 54 narrows towards the rear. An elastic retaining frame 50 of this shape can be formed, for example, by bending a springy metal wire.

[0023] The elastic retaining frame 50 may be integrally incorporated into the mask body 30. For example, the mask body 30 may have a laminated structure, and the elastic retaining frame 50 may be positioned between the layers. The elastic retaining frame 50 may be detachable from the mask body 30. In this case, for example, the elastic retaining frame 50 can be removed from a soiled mask body 30 and attached to a new mask body 30. This allows the elastic retaining frame 50 to be reused with other mask bodies 30. In this embodiment, an example in which the elastic retaining frame 50 is detachable from the mask body 30 will be mainly described.

[0024] For example, the elastic retaining frame 50 can be attached to and detached from the mask body 30 by the following configuration.

[0025] Each of the pair of lateral extensions 36 has a bag-shaped portion 37. The bag-shaped portion 37 is formed in a bag shape that opens toward the central portion 32. The bag-shaped portion 37 may have a shape that gradually narrows toward the tip of the lateral extension 36. The bag-shaped portion 37 opens toward the front at the intermediate portion in the front-rear direction of the lateral extension 36.

[0026] Furthermore, each of the pair of ends 54 of the elastic retaining frame 50 includes an attachment portion 55 that is inserted into the bag-shaped portion 37. In this embodiment, the tip of the end 54 is the attachment portion 55. The attachment portion 55 may be a straight-extending portion or a curved portion. For example, the attachment portion 55 may be a portion that is curved in a V-shape or triangular shape to match the shape of the bag-shaped portion 37. If the attachment portion 55 is a portion that is curved in a V-shape or triangular shape to match the shape of the bag-shaped portion 37, the position of the attachment portion 55 within the bag-shaped portion 37 will be stable, and the attachment portion 55 will be less likely to come out of the bag-shaped portion.

[0027] The bag-shaped portion 37 described above is an example of an end frame holding portion that detachably receives the mounting portion 55 of the elastic holding frame 50.

[0028] Then, the central frame portion 52 of the elastic retaining frame 50 is positioned inside the central portion 32, and while elastically deforming the elastic retaining frame 50, each of the pair of end portions 54 is inserted into the corresponding bag-shaped portion 37. Alternatively, after inserting each of the pair of end portions 54 into the corresponding bag-shaped portion 37, the central frame portion 52 of the elastic retaining frame 50 may be positioned inside the central portion 32.

[0029] In the installed state, the central frame portion 52 is positioned to cross the inside of the vertically intermediate portion of the central portion 32. The pair of ends 54 of the elastic retaining frame 50 pass inside the front of the pair of lateral extensions 36 and are inserted into the bag-shaped portion 37. The tips of the pair of ends 54 of the elastic retaining frame 50 should be inserted into the bag-shaped portion 37 until they reach the back of the bag-shaped portion 37.

[0030] As described above, with the elastic retaining frame 50 attached to the mask body 30, the central frame portion 52 restricts the movement of the central portion 32 backward. Because the backward movement of the central portion 32 is restricted, the movement of the bag-shaped portion 37 toward the tip of the end portion 54 is restricted. This prevents the end portion of the elastic retaining frame 50 from coming off the bag-shaped portion 37, and maintains the state in which the elastic retaining frame 50 is attached to the mask body 30.

[0031] Conversely, for example, while elastically deforming the elastic retaining frame 50, the central frame portion 52 of the elastic retaining frame 50 is moved to the upper or lower outer side of the central portion 32, and each of the pair of end portions 54 is removed from the corresponding bag-shaped portion 37. Alternatively, after removing each of the pair of end portions 54 from the corresponding bag-shaped portion 37, the central frame portion 52 of the elastic retaining frame 50 may be moved to the upper or lower outer side of the central portion 32. In any case, the elastic retaining frame 50 is attached to and detached from the mask body 30 by utilizing the elastic deformation of the elastic retaining frame 50 and the deformation of the mask body 30.

[0032] <Example of mask body shape> The mask body 30 described above may be formed in a shape that covers the mouth 12 three-dimensionally by, for example, the following configuration.

[0033] In other words, the sheet 30B that forms the mask body 30 is folded to create a three-dimensional shape. More specifically, as shown in Figure 6, the sheet 30B is folded so that mountain folds M and valley folds V are arranged alternately in the vertical direction. Here, the fold lines that are convex when viewed from the inside, i.e., from the face 10 side, are called mountain folds M, and the fold lines that are concave when viewed from the face 10 are called valley folds V. By folding the sheet 30B so that the mountain folds M and valley folds V are arranged alternately in the vertical direction, the sheet 30B can be curved so that its upper and lower ends are positioned inward from the midpoint in the vertical direction.

[0034] Furthermore, sheet 30B is folded in such a way that it is mirror-reversed midway along the extension direction of the mountain fold M and valley fold V. Mirror reversal means that the target portion is inverted to the shape seen in a mirror. More specifically, sheet 30B is folded so that the mountain and valley are reversed by a mirror reversal fold line RF that intersects the mountain fold M and valley fold V. In this case, the mountain fold M is transformed into the valley fold V by the mirror reversal fold line RF, and the valley fold V is transformed into the mountain fold M by the mirror reversal fold line RF. As a result, one side of the portion of sheet 30B that is folded by the mirror reversal fold line RF takes on a shape that is mirror-reversed with respect to a hypothetical portion that is not folded by the mirror reversal fold line RF. Figure 4 shows a part of the mirror reversal surface R through which the mirror reversal fold line RF passes, and Figure 6 shows the mirror reversal fold line RF.

[0035] By folding the sheet 30B along the mirror-reversal polyline RF, the sheet 30B can be curved such that the central portion of the central part 32 in the width direction is positioned in front of both ends in the width direction, and the central part 32 is positioned in front of the pair of lateral extensions 36.

[0036] In the mask body 30 described above, the bag-shaped portion 37 may be formed as follows.

[0037] As described above, sheet 30B is folded in an accordion shape by the mountain fold section M and the valley fold section V. The lateral extension section 36 is similarly folded in an accordion shape by the mountain fold section M and the valley fold section V. Figure 7 is a plan view showing the folded lateral extension section 36. In Figure 5, the folded lateral extension section 36 is shown by a dashed line, and the unfolded lateral extension section 36 is shown by a dashed line.

[0038] The lateral extension 36 has a first lateral valley fold V1 that forms a valley when viewed from the inside, and second lateral valley folds V2a and V2b located above or below the first lateral valley fold V1 and also forming a valley when viewed from the inside. The second lateral valley folds V2a and V2b may be located only above or only below the first lateral valley fold V1.

[0039] Since the first horizontal valley fold portion V1 described above forms a valley when viewed from the inside, it can be unfolded so that at least a part of it faces the outer region 15 of the opening 12 (see the horizontal extension portion 36 shown by the dashed line in Figure 5).

[0040] The second lateral fold portion V2a described above is folded to form a bag-like portion 37. More specifically, the lateral extension portion 36 includes the second lateral fold portion V2a. Here, the lateral extension portion 36 is folded in an accordion-like manner to form the first lateral fold portion V1 and the second lateral fold portions V2a and V2b. The portion of the lateral extension portion 36 above the first lateral fold portion V1 is folded upward along the fold line W. In a plan view, the fold line W is a line that extends from the outer corner of the rear end of the lateral extension portion 36 to a position on the inner portion of the lateral extension portion 36 that is away from the rear end and towards the front. As the upper portion of the lateral extension portion 36 is folded along the fold line W, the rear end edge of the upper portion of the lateral extension portion 36 is positioned outside the first lateral fold portion V1 of the lateral extension portion 36. As a result, a bag-like portion 37 is formed on the extension of the second horizontal fold portion V2a, enclosed between the second horizontal fold portion V2a and the fold portion formed by the fold line W. The bag-like portion 37 has an opening on the front side and gradually narrows towards the rear. Alternatively, a bag-like portion may be formed on the extension of the lower second horizontal fold portion V2b, and the end of the elastic retaining frame may be inserted into this bag-like portion.

[0041] Furthermore, the portion of the lateral extension 36 below the first lateral valley fold portion V1 is folded back along the fold line W in the opposite direction to the above. As a result, the rear edge of the lower portion of the lateral extension 36 is positioned outside the first lateral valley fold portion V1 of the lateral extension 36. Then, the rear edge of the upper portion of the lateral extension 36 and the rear edge of the lower portion of the lateral extension 36 are overlapped on the outside of the lateral extension 36, and the two rear edges are joined together. The joining may be done, for example, by heat welding, adhesive bonding, or sewing. This maintains the state in which the lateral extension 36 forms a bag-like portion 37.

[0042] As described above, each of the attachment portions 55 of the pair of ends 54 of the elastic retaining frame 50 is inserted into the pair of bag-shaped portions 37 for attachment. When the attachment portions 55 of the ends 54 of the elastic retaining frame 50 are inserted into the bag-shaped portions 37, the elastic retaining frame 50 is less likely to come into direct contact with the face 10. This improves the comfort of wearing it.

[0043] The central frame portion 52 of the elastic retaining frame 50 passes inside the central portion 32. The central frame portion 52 is easily positioned in a stable location by passing through the valley fold portion V of the central portion 32. For example, among the valley fold portions V formed in the central portion 32, the valley fold portion V at the center in the width direction and the center in the front-rear direction is designated as the central positioning valley fold portion Vm. In this embodiment, the central positioning valley fold portion Vm is located in a narrow, point-like area. The central portion of the central frame portion 52 is then positioned within this central positioning valley fold portion Vm. As a result, the central portion of the central frame portion 52 is kept in a stable position at the center of the central portion 32.

[0044] The central positioning valley fold portion Vm is an example of a central frame holding portion that detachably receives the central frame portion 52 of the elastic holding frame 50.

[0045] <Example configuration for anti-slip purposes> The mask 20 includes a pair of anti-slip members 60 positioned inside each of the pair of lateral extensions 36, facing the outer region 15 of the mouth 12. The pair of ends 54 of the elastic retaining frame 50 are positioned to press the pair of anti-slip members 60 against both outer regions 15.

[0046] In this embodiment, an anti-slip member 60 is attached to the portion of the lateral extension 36 that faces the outer region 15 when unfolded. The anti-slip member 60 is made of a material that is less slippery against the face 10 than the mask body 30. For example, the anti-slip member 60 is made of rubber such as silicone rubber. The anti-slip member 60 may be present in a linear, point-like, or planar manner on the portion of the lateral extension 36 that faces the outer region 15 when unfolded. In this embodiment, the anti-slip member 60 is formed in a V-shape and is attached to the portion of the lateral extension 36 that faces the outer region 15 when unfolded, in a manner that gradually narrows toward the rear. The anti-slip member 60 may be applied directly to the lateral extension 36. The anti-slip member 60, formed into a predetermined shape, may be bonded to the lateral extension 36 with an adhesive or the like.

[0047] Then, when the elastic retaining frame 50 presses the lateral extension 36 toward the outer region 15, the anti-slip member 60 is pressed against the outer region 15. This makes it difficult for the lateral extension 36 to slip off the outer region 15.

[0048] The mask 20 may also be equipped with other anti-slip members 65. For example, an anti-slip member 65 may be attached to the upper part of the center 32 in the width direction of the central part of the mask body 30. The anti-slip member 65 may be a non-slip material made of rubber such as silicone rubber, similar to the anti-slip member 60. The anti-slip member 65 makes contact with the upper part of the nose 13, making it less likely to slip down from the nose 13.

[0049] A component may be attached to the upper part of the central portion 32 of the mask body 30 of the mask 20, in the width direction, to maintain the shape of the upper part according to the contours of the nose 13. This component may be, for example, a linear resin component that can be bent to maintain the shape according to the contours of the nose 13. Such a component may be called a nose wire. This component reduces the gap between the face 10 and the mask body 30 at the upper part where the nose 13 protrudes. In addition, because this component rests on the upper part where the nose 13 begins to protrude, the mask body 30 becomes less likely to slip down.

[0050] <Effects, etc.> With the mask 20 configured as described above, the elastic retaining frame 50 presses the pair of lateral extensions 36 toward both outer regions 15, so the mask 20 can be worn on the face 10 without having to put strings or bands over the ears or back of the head. Therefore, the comfort of wearing the mask 20 is improved.

[0051] Furthermore, if the elastic retaining frame 50 is detachable from the mask body 30, the elastic retaining frame 50 can be reused on other mask bodies 30. For example, if the mask body 30 becomes dirty, the elastic retaining frame 50 can be removed from the mask body 30 and attached to another new mask body 30. This reduces the cost of using the mask 20. Also, since the elastic retaining frame 50 can be reused, resource conservation is possible.

[0052] Furthermore, since each of the pair of lateral extensions 36 has a pouch-like portion 37, and both ends 54 of the elastic retaining frame 50 include attachment portions 55 that are inserted into the respective pouch-like portions of the pair of lateral extensions 36, the elastic retaining frame 50 can be easily attached to and detached from the mask body 30. In addition, because the central frame portion 52 of the elastic retaining frame 50 passes inside the central portion 32, the central portion 32 of the mask body 30 is positioned away from the lips of the mouth 12, which also contributes to a more comfortable fit.

[0053] Furthermore, the mask body 30 is folded so that mountain folds M and valley folds V are arranged alternately, and is also folded so that it is mirror-image-reversed midway along the extension direction of the mountain folds M and valley folds V, forming a curved shape that can be positioned from the mouth 12 to both outer regions. As a result, the sheet 30B can be formed into a three-dimensional shape that covers the mouth 12 and both outer regions 15. In addition, the first horizontal valley fold V1 of the horizontal extension 36 can be unfolded so that at least a part of it faces the outer region 15, and the second horizontal valley fold V2a is folded so as to form a bag-like portion 37. As a result, by utilizing the configuration in which mountain folds M and valley folds V are arranged alternately in the horizontal extension 36, a bag-like portion 37 can be formed into which the end 54 of the elastic retaining frame 50 can be inserted, while the mask body 30, rather than the elastic retaining frame 50, is in contact with the face 10.

[0054] Furthermore, a pair of anti-slip members 60 are positioned on the inside of each of the pair of lateral extensions 36, and both ends of the elastic retaining frame 50 are positioned to press the anti-slip members 60 against the outer region 15. As a result, the elastic retaining frame 50 can stably press the anti-slip members 60 against the outer region, making it less likely for the mask 20 to fall off the face 10.

[0055] Furthermore, the central portion 32 of the mask body 30 has a central positioning valley fold portion Vm that forms a valley when viewed from the inside, and since the elastic retaining frame 50 is positioned within the central positioning valley fold portion Vm, misalignment of the elastic retaining frame 50 relative to the central portion 32 is suppressed.

[0056] The mask 20 described above may be distributed in a form in which the elastic retaining frame 50 is attached to the mask body 30. Alternatively, only the mask body 30 may be distributed, or only the elastic retaining frame 50 may be distributed. If only the mask body 30 is distributed, the elastic retaining frame 50 can be easily reused.

[0057] {Variable form} In the above embodiment, an example was described in which the anti-slip member 60 is attached to the lateral extension 36. As shown in the modified mask 120 in Figure 8, the anti-slip member 160 may be supported by the elastic retaining frame 150.

[0058] In other words, in this modified example, the anti-slip member 60 attached to the mask body 30 is omitted. Instead, the elastic retaining frame 150 corresponding to the elastic retaining frame 50 includes a pair of inner extensions 158. For example, the mounting portion 155 corresponding to the mounting portion 55 is formed in a V-shape so as to return to the opening side of the bag-shaped portion 37. The inner extensions 158 extend from the mounting portion 155. The inner extensions 158 extend along the surface of the lateral extension 36 that faces the outer region 15. The inner extensions 158 also include a V-shaped portion that extends from the opening of the bag-shaped portion 37 toward the rear end of the lateral extension 36 and then folds back toward the opening of the bag-shaped portion 37.

[0059] The inner extension portion 158 supports the anti-slip member 160. For example, the anti-slip member 160 is formed on the outer circumferential surface of the inner extension portion 158 by dip coating or the like. The configuration for attaching the anti-slip member 160 to the inner extension portion 158 is not particularly limited. The shape of the anti-slip member 160 is also not particularly limited. For example, the anti-slip member 160 may be molded using the inner extension portion 158 as an insert portion. The anti-slip member 160 may be bonded to the inner extension portion 158 with an adhesive or the like. The anti-slip member may be formed in a V-shape along the shape of the inner extension portion 158, or in a shape along the three sides of a triangle. The anti-slip member may be formed in a shape that fills the inside of the inner extension portion 158 and spreads out like a plate, for example, in the shape of a triangular plate.

[0060] According to this modified example, the inner extension 158 of the elastic retaining frame 150 is pressed against the outer region 15 on the inside of the lateral extension 36. Since the inner extension 158 supports the anti-slip member 160, the inner extension 158 is less likely to slip against the outer region 15. Therefore, the elastic retaining frame 150 is less likely to slip off the outer region 15, and the mask body 30 to which the elastic retaining frame 150 is attached is less likely to fall off the face 10.

[0061] Furthermore, since the mounting portion 155 of the elastic retaining frame 150 is inserted into the bag-shaped portion 37, the mounting portion 155 presses the bag-shaped portion 37 toward the outer region 15. Since the inner extension portion 158 is positioned between the bag-shaped portion 37 and the outer region 15, the anti-slip member 160 supported by the inner extension portion 158 is also positioned between the bag-shaped portion 37 and the outer region 15. Since the anti-slip member 160 is difficult to slip against both the outer region 15 and the lateral extension portion 36, the lateral extension portion 36 becomes difficult to slip against the outer region 15. Therefore, the lateral extension portion 36 also becomes difficult to slide off the outer region 15.

[0062] The anti-slip member 160 may or may not be attached to the lateral extension 36.

[0063] According to this modified example, the anti-slip member 60 can be supported by the elastic retaining frame 50. Attaching the anti-slip member 160 to the elastic retaining frame 50 may be easier than attaching the anti-slip member 60 to the mask body 30. Therefore, the assembly work of the anti-slip member 160 becomes easier, potentially reducing the production cost of the mask 120.

[0064] In the above embodiments and modifications, it is not essential that the mask body 30 is formed by folding. Even when the mask body 30 is formed by folding, the number of folds is arbitrary, the patterns of the mountain folds and valley folds are arbitrary, and the sizes of the mountain folds and valley folds are also arbitrary. Furthermore, within the same mask, some of the folding patterns or sizes of a series of mountain folds and valley folds may differ from other mountain folds or valley folds.

[0065] Furthermore, the configurations described in the above embodiments and each of the modified examples can be combined as appropriate, as long as they do not contradict each other.

[0066] This disclosure discloses the following aspects:

[0067] The first embodiment is a mask comprising a mask body including a central portion that covers the mouth and a pair of lateral extensions that extend from both sides of the central portion and are positioned in the outer regions of the head that are on both sides of the mouth, and an elastic retaining frame that extends from one of the pair of lateral extensions across the central portion toward the other of the pair of lateral extensions and presses the pair of lateral extensions toward the outer regions.

[0068] This mask allows you to wear it without having to put bands over your ears or the back of your head, improving the comfort of wearing the mask.

[0069] A second embodiment is a mask according to the first embodiment, wherein the elastic retaining frame may be detachably attached to the mask body.

[0070] In this case, since the elastic retaining frame is detachable from the mask body, the elastic retaining frame can be reused with other mask bodies.

[0071] A third embodiment is a mask according to the second embodiment, wherein each of the pair of lateral extensions has a bag-like portion that opens toward the central portion, the central frame portion of the elastic retaining frame passes inside the central portion, and the mounting portions at both ends of the elastic retaining frame are inserted into the bag-like portions of each of the pair of lateral extensions.

[0072] In this case, the elastic retaining frame can be easily attached to and detached from the mask body. Furthermore, because the central part of the elastic retaining frame passes inside the central part, the central part of the mask body is positioned away from the lips, which also contributes to a more comfortable fit.

[0073] The fourth embodiment is a mask according to the third embodiment, wherein the mask body is formed by folding a sheet such that mountain folds and valley folds are arranged alternately, and by folding the mountain folds and valley folds so as to be mirror-reversed in the middle of their extending direction, so as to be positioned from the opening to both outer regions thereof, and each of the pair of lateral extensions has a first lateral valley fold that forms a valley when viewed from the inside, and a second lateral valley fold located above or below the first lateral valley fold and also forming a valley when viewed from the inside, the first lateral valley fold is expandable so that at least a part of it faces the outer region of the opening, and the second lateral valley fold is folded to form the bag-like portion.

[0074] This allows the sheet to be formed into a three-dimensional shape that covers the opening and the outer regions on both sides thereof. Furthermore, the first horizontal valley fold of the lateral extension can be unfolded so that at least a portion of it faces the outer region of the opening, and the second horizontal valley fold is folded to form a bag-like portion. Therefore, by utilizing the configuration in which mountain folds and valley folds are arranged alternately in the lateral extension, a bag-like portion into which the end of the elastic retaining frame can be inserted can be formed.

[0075] Furthermore, the fifth embodiment is a mask relating to any one of the first to fourth embodiments, further comprising a pair of anti-slip members arranged inside each of the pair of lateral extensions so as to face the outer region of the mouth, wherein both ends of the elastic retaining frame are positioned to press the pair of anti-slip members against both outer regions of the mouth.

[0076] This makes it easier for the elastic retaining frame to stably press the anti-slip member against the outer area of ​​the mouth.

[0077] Furthermore, a sixth embodiment is a mask according to the fifth embodiment, wherein the elastic retaining frame includes a pair of inner extensions arranged inside the pair of lateral extensions and facing the outer region of the mouth, and each of the pair of inner extensions supports the anti-slip member.

[0078] As a result, when the elastic retaining frame is attached to the mask body, the anti-slip member is assembled to the mask body. Therefore, the assembly of the anti-slip member is easy.

[0079] Furthermore, the seventh embodiment is a mask according to the first to sixth embodiments, wherein the mask body is formed by folding a sheet such that mountain folds and valley folds are arranged alternately, and by folding the mountain folds and valley folds so as to be mirror-reversed midway along their extending direction, thereby forming a curved shape that can be positioned from the opening to both outer regions thereon, the central portion having a central positioning valley fold that forms a valley when viewed from the inside, and the elastic retaining frame may be positioned within the central positioning valley fold.

[0080] This suppresses misalignment of the elastic retaining frame relative to the central part.

[0081] Furthermore, the eighth embodiment is a mask body comprising a central portion that covers the mouth, and a pair of lateral extensions that extend from both sides of the central portion and are positioned in the outer regions of the head on both sides of the mouth, wherein the central portion includes a central frame holding portion that detachably receives the central frame portion of an elastic retaining frame, and each of the pair of lateral extensions includes an end frame holding portion that detachably receives each of the pair of attachment portions at both ends of the elastic retaining frame.

[0082] According to this mask body, the central part of the elastic retaining frame can be detachably positioned onto the central frame retaining part, and each of the pair of attachment parts at both ends of the elastic retaining frame can be detachably positioned onto the end frame retaining parts of the pair of lateral extensions. By attaching the elastic retaining frame to the mask body, the pair of lateral extensions of the mask body can be pressed against the outer areas of the head on both sides of the mouth. As a result, the mask can be worn without having to put bands over the ears or back of the head, improving the comfort of the mask. In addition, since the elastic retaining frame is detachable from the mask body, it can be reused with other mask bodies.

[0083] The above description is illustrative in all respects, and the invention is not limited thereto. It is understood that countless variations not illustrated can be conceivable without falling outside the scope of this invention. [Explanation of Symbols]

[0084] 10 Faces 12 mouths 15 Outer area 20,120 masks 30 Mask body 30B Seat 32 Central part 36 Lateral extension 37 Pouch 50, 150 Elastic Retaining Frame 52 Central frame section 54 End 55, 155 Mounting part 60, 160 Anti-slip material 158 Inner extension M mountain fold section VR mirrored surface RF mirror-reversed polyline V1 First Yokotani Fold Section V2a Second Yokoya Fold Section Vm central positioning valley fold W fold line

Claims

1. A mask body including a central portion covering the mouth and a pair of lateral extension portions extending from both sides of the central portion and positioned on both outer regions of the head relative to the mouth; an elastic holding frame extending from one of the pair of lateral extensions across the central portion toward the other of the pair of lateral extensions and pressing the pair of lateral extensions toward both outer regions; Equipped with The elastic holding frame is detachably attached to the mask body, Each of the pair of lateral extensions has a bag-shaped portion that opens toward the central portion, A central frame portion of the elastic holding frame passes through the inside of the central portion, and mounting portions at both ends of the elastic holding frame are inserted into the bag-shaped portions of the pair of lateral extension portions, The mask body is formed into a curved shape that can be positioned from the mouth to both outer regions thereof by folding the sheet so that mountain folds and valley folds are alternately arranged and folding so as to be mirror-inverted midway along the extending direction of the mountain folds and the valley folds, Each of the pair of lateral extensions has a first lateral valley fold portion that forms a valley when viewed from the inside, and a second lateral valley fold portion that is located above or below the first lateral valley fold portion and forms a valley when viewed from the inside, The first horizontal valley fold can be deployed so that at least a portion of the first horizontal valley fold faces an outer region of the mouth, A mask, wherein the second horizontal valley fold is folded to form the bag-shaped portion.

2. A mask as claimed in claim 1, a pair of anti-slip members disposed on the inner side of each of the pair of lateral extensions so as to face the outer region of the mouth; A mask, wherein both ends of the elastic retaining frame are positioned to press the pair of anti-slip members against both outer areas of the mouth.

3. A mask body including a central portion covering the mouth and a pair of lateral extensions extending from both sides of the central portion and positioned on both sides of the head outside the mouth; an elastic holding frame extending from one of the pair of lateral extensions across the central portion toward the other of the pair of lateral extensions and pressing the pair of lateral extensions toward both outer regions; Equipped with a pair of anti-slip members disposed on the inner side of each of the pair of lateral extensions so as to face the outer region of the mouth; The elastic holding frame is disposed at a position where both ends of the elastic holding frame press the pair of anti-slip members against both outer regions of the mouth, the elastic retaining frame includes a pair of inner extensions disposed inwardly of the pair of lateral extensions and facing the outer region of the mouth; A mask, wherein each of the pair of inner extension portions supports the anti-slip member.

4. A mask body including a central portion covering the mouth and a pair of lateral extensions extending from both sides of the central portion and positioned on both sides of the head in the regions outside the mouth; an elastic holding frame extending from one of the pair of lateral extensions across the central portion toward the other of the pair of lateral extensions and pressing the pair of lateral extensions toward both outer regions; Equipped with The mask body is formed into a curved shape that can be positioned from the mouth to both outer regions thereof by folding the sheet so that mountain folds and valley folds are alternately arranged and folding so as to be mirror-inverted midway along the extending direction of the mountain folds and the valley folds, The central portion has a central positioning valley fold portion that forms a valley when viewed from the inside, A mask, wherein the elastic retention frame is disposed within the central positioning valley fold.

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