Frame for mask

Abstract

To provide a mask frame that allows a mask to be worn more comfortably.SOLUTION: There is provided a mask frame used by attaching to the inside of a mask and including: a top frame that is horizontally installed in a left-right direction and has a center portion located above the tip of the nose; a bottom frame that is horizontally installed in the left-right direction and has a center portion located below the lips; and a vertical frame that connects the center portion of the top frame and the center portion of the bottom frame in a vertical direction.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a mask frame.

Background Art

[0002] Masks that cover the mouth and nose are used to prevent droplets, pollen, dust, etc. Since such masks are in direct contact with the mouth and nose, they can sometimes cause shortness of breath. In Patent Document 1, a mask is proposed in which a spherical non-woven fabric sheet is sandwiched between the inner skin and the outer skin of the mask. There is also a type that uses a net-like synthetic resin molded product applied inside the mask to surround the mouth and nose area.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Although the mask of Patent Document 1 can provide an appropriate space between the mouth and nose, since the non-woven fabric sheet is sewn between the inner skin made of gauze and the outer skin, the cost is too high for use as a disposable mask. On the other hand, if it is washed and reused, the non-woven fabric sheet may not be able to maintain its shape, and there is a risk that it will not be able to perform the desired function. In addition, the net-like synthetic resin molded product has a wide and hard contact with the face at the part surrounding the mouth and nose, resulting in a poor wearing feeling.

[0005] An object of the present invention is to provide a mask frame that solves at least one of the above problems and enables a mask to be worn more comfortably.

Means for Solving the Problems

[0006] In order to solve at least one of the above-mentioned problems, a frame for a mask according to one aspect of the present invention is a frame that is worn and used inside a mask, and includes a top frame that is horizontally provided in the left-right direction and has a central portion located above the nasal tip, a bottom frame that is horizontally provided in the left-right direction and has a central portion located below the lips, and a vertical frame that connects the central portion of the top frame and the central portion of the bottom frame in the up-down direction.

[0007] In the above-mentioned frame for a mask, the top frame has a top outer frame provided on the outside and a top inner frame provided inside the top outer frame and abutting against the nose.

[0008] In the above-mentioned frame for a mask, a nose abutting portion that abuts against the nose and has a substantially V-shaped convexity forward is provided at the central portion of the top inner frame.

[0009] In the above-mentioned frame for a mask, the top frame can change the front-rear interval between the top outer frame and the top inner frame.

[0010] In the above-mentioned frame for a mask, the top outer frame of the top frame is located above the top inner frame.

[0011] In the above-mentioned frame for a mask, a fixing portion for fixing to the mask is provided at the central portion of the top frame. In the above-mentioned frame for a mask, the top frame abuts against the face at both left and right ends. In the above-mentioned frame for a mask, top abutting portions made of a cushioning material are provided at both left and right ends of the top frame.

[0012] In the above-mentioned frame for a mask, the bottom frame has a substantially V-shaped bottom upper frame that is convex upward and a bottom lower frame that connects both lower end portions of the bottom upper frame.

[0013] In the above mask frame, the bottom frame can change the front-back interval between the upper bottom frame and the lower bottom frame.

[0014] In the above mask frame, at least the cross-sections of the top frame and the bottom frame are circular.

[0015] In the above mask frame, a material that can change its shape and retain the changed shape is used for any one or two or more of the top frame, the bottom frame, and the vertical frame.

Advantages of the Invention

[0016] According to the present invention, it is possible to provide a mask frame that allows a mask to be worn more comfortably.

[0017] Problems, configurations, and effects other than those described above will be clarified by the description of the following embodiments.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Modes for Carrying Out the Invention

[0019] Examples of embodiments of the present invention will be described below with reference to the drawings. In this application, when referring to the shape, positional relationship, etc. of components, etc., unless otherwise specified or it is clearly not the case in principle, it shall include those that are substantially similar or analogous to the shape, etc.

[0020] <First Embodiment> FIG. 1 is a diagram showing an example of a mask frame according to an embodiment of the present invention, where (a) is an example of a plan view, (b) is an example of a front view, and (c) is an example of a right side view. FIG. 2 is a diagram showing the usage state of the mask frame of FIG. 1, and FIGS. 3 and 4 are diagrams for explaining its top frame.

[0021] In this application, a mask refers to something that covers both the nose and mouth to prevent droplets, pollen, dust, etc., and is made of non-woven fabric, cloth, gauze, etc. The mask frame of the present invention is used by being attached to such a mask.

[0022] As shown in the figure, the mask frame 1 includes a top frame 10 that is horizontally arranged in the left - right direction and whose central part is located above the tip of the nose (on the user's face), a bottom frame 20 that is horizontally arranged in the left - right direction and whose central part is located below the lips, and a vertical frame 30 that connects the central part of the top frame 10 and the central part of the bottom frame 20 in the up - down direction. The top frame 10, the bottom frame 20, and the vertical frame 30 are all formed by strip members capable of maintaining their shapes.

[0023] The top frame 10 has a top outer frame 11 provided on the outside and a top inner frame 12 provided inside the top outer frame 11 and abutting against the nose. In other words, the top frame 10 has a top outer frame 11 and a top inner frame 12 provided one behind the other. The top outer frame 11 and the top inner frame 12 extend in the left - right direction.

[0024] The central part of the top outer frame 11 protrudes forward from both ends and has a substantially arc - shaped or V - shaped convexity on the outside in plan view. The both ends of the top inner frame 12 are respectively connected to the both ends of the top outer frame 11. Thereby, the top frame 10 has a substantially triangular or crescent - shaped in plan view. The both ends of the top inner frame 12 may be respectively connected to both side parts (parts between the central part and the end part) of the top outer frame 11.

[0025] As an example, the top outer frame 11 and the top inner frame 12 are connected in an endless manner such that their ends form a bent part. Thereby, it can abut softly against the face.

[0026] The top inner frame 12 is provided with a nose - abutting part 121 that abuts against the nose and has a substantially V - shaped convexity forward (outward) at the central part. The front - to - back width of the nose - abutting part 121 is smaller than the height of the tip of the nose, and the left - to - right width is smaller than the width of the nose. The nose - abutting part 121 is caught on the nasal bridge and serves as a positioning part to suppress the displacement of the mask frame. At least the nose - abutting part 121 of the top inner frame 12 abuts against the face.

[0027] Preferably, the top inner frame 12 has a shape that follows the shape of the face. This allows it to fit the face better and improves the wearing comfort (user experience).

[0028] As an example, the nose contact portion 121 has cushioning members 122 made of materials such as silicon resin or rubber, at least near both ends. The contact surface portion (for example, both ends) or the entire top inner frame 12 may have the cushioning members 122. This enables the top inner frame 12 to contact the face more softly.

[0029] The cross-section of the strip member of the top frame 10 may be a flat shape, but preferably it is a circular shape. This can reduce the contact area with the face and make the touch feel smoother. The strip member of the top frame 10 may be hollow or solid.

[0030] The bottom frame 20 is located below the lips. The bottom frame 20 has a curved shape that is convex outward in a plan view. At least a part of the bottom frame 20 contacts the jaw.

[0031] Preferably, the bottom frame 20 has a shape that follows the shape of the jaw. This allows it to fit the face better and improves the wearing comfort.

[0032] The cross-sectional shape of the strip member of the bottom frame 20 is configured in the same way as that of the top frame 10. Also, similar to the top frame 10, the contact surface portion (for example, both ends) or the entire part may have a cushioning material.

[0033] The vertical frame 30 extends in the vertical direction and connects the central part of the top frame 10 and the central part of the bottom frame 20. The vertical frame 30 preferably has a curved shape that is convex forward, and the foremost end is located in front of the top frame 10 and the bottom frame 20. Also, the foremost end of the vertical frame 30 is located in front of the tip of the nose.

[0034] By configuring the mask frame 1 of the present embodiment as described above, it has a frame structure that is approximately E-shaped when viewed from the front and approximately C-shaped when viewed from the side, forming a space that prevents the inside of the mask from closely adhering to the mouth area of the face.

[0035] As shown in FIG. 2, in a state where the user P covers the nose and mouth with the mask M using the main body M1 and wears it by hanging the ear straps M2 on the ears, the mask frame 1 is worn and used inside the main body M1. The mask frame 1 is formed smaller than the main body M1 so as not to protrude from the main body M1. Therefore, the mask frame 1 can be used casually without worrying about its appearance.

[0036] The mask frame 1 causes the top frame 10 to push the main body M1 outward above the tip of the nose P1, then the vertical frame 30 pushes the main body M1 outward from below it across the lips P2, and further the bottom frame 20 pushes the main body M1 outward below the lips P2, forming a space where the inside of the mask and the face do not closely adhere. With the mask frame 1, the user P can breathe easily, it is easier to talk even when wearing the mask, and it is less likely to get sweaty. The mask frame 1 can be attached to and detached from the mask M and can be used repeatedly, so the cost is low.

[0037] The mask frame 1 does not surround the area around the nose and mouth. Only the horizontally arranged top frame 10 and the horizontally arranged bottom frame 20 come into contact with the face. Therefore, the contact area with the face is small, and the wearing feeling is good. Also, the burden on the skin is small, skin roughness is less likely to occur, and makeup smudging is less likely to occur.

[0038] As shown in FIG. 3, in the mask frame 1, the top outer frame 11 and the top inner frame 12 are separated from each other front and back. The front-back interval between the top outer frame 11 and the top inner frame 12 is not less than 1 times and not more than 10 times the front-back width (cross-sectional diameter) of the strip between the tip of the nose contact portion 121, and is more than that between both ends of the nose contact portion 121. The top frame 10 is configured such that the top inner frame 12 contacts the face, and the top outer frame 11 pushes the inside of the mask body M1 away from the face. By configuring in this way, it becomes easier to take in air even when wearing the mask, and it becomes difficult for heat to be trapped.

[0039] As described above, the top frame 10 separates the top outer frame 11 that widely contacts and supports the mask body M1 and the top inner frame 12 that contacts the face into separate frames, so that appropriate shapes or structures can be given to each of them.

[0040] As shown in FIG. 4, preferably, the front-back interval between the top outer frame 11 and the top inner frame 12 of the top frame 10 can be changed. As shown in FIG. 4(a), if the front-back interval between the two is increased, the mask body M1 is pushed forward from the original broken line position, and the interval from the nose becomes larger. Also, as shown in FIG. 4(b), if the front-back interval between the two is decreased, the body M1 retreats backward from the original broken line position, and the interval from the nose becomes smaller. Thereby, the user can adjust the top frame according to their own face and the mask being worn, and wear the mask more comfortably. Also, for example, it can be worn according to the environment, such as narrowing the front-back interval in a crowded place and widening the front-back interval in an environment where there is sufficient distance from people.

[0041] The means for changing the front-to-back interval of the top frame 10 is not particularly limited. As an example, a flexible material is used so that its shape can be changed and the changed shape can be maintained. By using such a material, the user can not only change the interval but also configure the top frame 10 with its shape finely adjusted according to their face. For the top frame 10, for example, a wire is used. The material of the wire is not particularly limited as long as its shape can be changed, such as aluminum, copper, steel, etc. Also, the wire may be coated or covered. For the top frame 10, for example, a resinous strip member capable of shape change and maintaining the changed shape may be used. A strip member having a core capable of shape change and maintaining the changed shape with its outer shape formed of silicone resin, rubber, etc. may be used. A tube-shaped member capable of shape change and maintaining the changed shape may be used. Such a tube-shaped member may be coated or covered.

[0042] For the mask frame 1, a material similar to that of the top frame 10 may be used for the bottom frame 20. For the vertical frame 30, a material similar to that of the top frame 10 may be used so that its posture can be changed and the changed posture can be maintained.

[0043] <Second Embodiment> FIG. 5 is a diagram showing an example of a mask frame according to the second embodiment, where (a) is an example of a plan view, (b) is an example of a front view, and (c) is an example of a right side view. FIG. 6 is a diagram showing the usage state of the mask frame according to the second embodiment. The mask frame 1a according to the present embodiment is different from the previous example in that the bottom frame 20a further has a stopper portion 40a. Hereinafter, the different points will be mainly described.

[0044] The bottom frame 20a has a substantially V-shaped bottom upper frame 21a convex upward and a bottom lower frame 22a connected to both lower end portions of the bottom upper frame 21a. The bottom lower frame 22a has a curved shape convex outward in a plan view. The bottom lower frame 22a abuts at least partially against the jaw. Preferably, the bottom lower frame 22a has a shape conforming to the shape of the jaw.

[0045] The upper bottom frame 21a has its upper end connected to the lower end of the vertical frame 30, and both lower ends connected to both ends or the vicinity of both ends of the lower bottom frame 22a. Thereby, the bottom frame 20a forms a substantially triangular shape in a front view.

[0046] The bottom frame 20a also forms a substantially triangular shape in a plan view. That is, at least a portion near the upper end of the upper bottom frame 21a is located in front of the lower bottom frame 22a.

[0047] Since the bottom frame 20a has the upper bottom frame 21a, the mask body M1 at the mouth can be pushed out vertically and horizontally. When the user talks or inhales, the front part of the mask body M1 may be adsorbed to the mouth, but having the upper bottom frame 21a prevents this and makes it easier to maintain the space between the inside of the body M1 and the mouth.

[0048] In the bottom frame 20a, the upper bottom frame 21a and the lower bottom frame 22a are separated front and back. The front-back distance between the upper bottom frame 21a and the lower bottom frame 22a is 2 times or more and 10 times or less the front-back width (cross-sectional diameter) of the strip at the upper end. In this way, the bottom frame 20a separates the upper bottom frame 21a that widely contacts and supports the mask body M1 from the lower bottom frame 22a that contacts the face into separate frames, making it possible to give appropriate shapes or structures to each.

[0049] As an example, the lower bottom frame 22a has a radius of curvature smaller than the radius of curvature of the jaw, and only both ends contact the jaw. Thereby, the contact area with the face can be reduced, and the burden on the skin can be further reduced.

[0050] Preferably, the bottom frame 20a can change the front-to-back distance between the upper bottom frame 21a and the lower bottom frame 22a. Thereby, the user can adjust the bottom frame according to their face or the mask they are wearing, and wear the mask more comfortably. Also, for example, in a crowded place, the front-to-back distance can be narrowed, and in an environment where there is enough distance from people, the front-to-back distance can be widened, etc., and it can also be worn according to the environment.

[0051] The means for changing the front-to-back distance of the bottom frame 20a is not particularly limited. As an example, a flexible material is used so that the shape can be changed and the changed shape can be maintained. For the bottom frame 20a, for example, the same material as the aforementioned top frame 10 is used.

[0052] The fixing part 40a is for fixing the mask frame 1a to the mask and is provided at the central part of the top frame 10. More specifically, here, it is provided at the central part of the inner top frame 12.

[0053] The fixing part 40a is provided so as to protrude upward from the nose contact part 121 at the central part of the inner top frame 12. The fixing part 40a is substantially U-shaped in side view, with the opening facing downward, one inner end connected to the nose contact part 121 of the inner top frame 12, and the other outer end being a free end.

[0054] As shown in FIG. 6, attaching the mask frame 1a to the mask is very simple because the upper end central part of the mask body M1 can be sandwiched in the opening of the fixing part 40a. Also, even when pleats are provided on the mask body M1, since it does not come into contact with the pleat part, it does not interfere with spreading the pleats.

[0055] By providing the fixing part 40a, the mask frame 1a is less likely to come off or fall out of the mask. Also, when the mask is lowered under the chin, such as when drinking a drink, it is possible to prevent the mask frame 1a from coming off. Furthermore, when the mask is lowered under the chin, there is no worry about misalignment.

[0056] The stopping part 40a is preferably made of a flexible material, similar to the aforementioned top frame 10, and can change its posture and maintain the posture after the change.

[0057] <Third Embodiment> FIG. 7 is a diagram showing an example of a mask frame according to the third embodiment, where (a) is an example of a plan view, (b) is an example of a front view, and (c) is an example of a right side view. FIG. 8 is a diagram showing the usage state of the mask frame according to the third embodiment, and FIG. 9 is a diagram for explaining its top frame. The mask frame 1b according to the present embodiment is different from the aforementioned example in that the top frame 10b and the stopping part 40b are different. Hereinafter, the different points will be mainly described.

[0058] The top frame 10b has a top outer frame 11b provided on the outside and a top inner frame 12b provided inside the top outer frame 11b and contacting the nose. The top outer frame 11b and the top inner frame 12b extend in the left-right direction.

[0059] The central part of the top outer frame 11b protrudes forward more than both ends, and has a substantially arc shape or V shape convex forward in plan view. Also, the central part of the top outer frame 11b protrudes upward more than both ends in front view and has a curved shape.

[0060] The top inner frame 12b is located below the top outer frame 11b at the rear thereof. Thereby, the top frame 10b has a substantially triangular shape or crescent shape in plan view and front view.

[0061] In the top frame 10b, the width of the top inner frame 12b in the left-right direction is smaller than that of the top outer frame 11b, and both ends of the top inner frame 12b are connected to and merged with both ends of the top outer frame 11b near both ends to form both ends 13b. The left-right width of the top outer frame 11b may be smaller than that of the top inner frame 12b, and both ends of the top outer frame 11b are connected to and merged with both ends of the top inner frame 12b near both ends to form both ends 13b. Both ends 13b of the top frame 10b contact the face.

[0062] The inner top frame 12b is provided with a nose contact portion 121b that contacts a substantially V-shaped nose protruding forward at the center portion. The nose contact portion 121b has a front-rear width smaller than the height of the nose tip and a left-right width smaller than the nose width. The nose contact portion 121b catches on the nasal bridge and serves as a positioning portion to suppress displacement of the mask frame.

[0063] At least the nose contact portion 121b of the inner top frame 12b contacts the face. Although portions other than the nose contact portion 121b may also contact the face, if only the nose contact portion 121b contacts the face, the contact area with the face can be reduced, and the burden on the skin can be alleviated. The top frame 10b may have a cushioning material similar to the previous example at the nose contact portion 121b and both end portions 13b that contact the face, or throughout.

[0064] The top frame 10b is not only separated front and back between the outer top frame 11b and the inner top frame 12b, but also separated vertically. The vertical interval between the outer top frame 11b and the inner top frame 12b is 1 to 5 times the vertical width (cross-sectional diameter) of the strip between the upper end portion of the nose contact portion 121b, and more than that between both end portions of the nose contact portion 121b. This makes it easier to conform to the shape of the mask and the face, and enables more comfortable air intake.

[0065] Preferably, the top frame 10b can change one or both of the front-rear interval and the vertical interval between the outer top frame 11b and the inner top frame 12b. Thereby, the user can adjust the top frame according to their own face and the mask being worn, and wear the mask more comfortably. The means for changing the interval is not particularly limited, but as an example, a flexible material is used so that the shape can be changed and the changed shape can be maintained. For the top frame 10b, for example, the same material as the aforementioned top frame 10 is used.

[0066] The stop portion 40b is provided here at the central portion of the top outer frame 11b. The stop portion 40b is provided so as to protrude upward from the central portion of the top outer frame 11b. The stop portion 40b is substantially U-shaped in side view, with the opening facing downward, and one inner end is connected to the top outer frame 11b and the other outer end is a free end. By providing the stop portion 40b on the top outer frame 11b, contact with the nose can be reduced and the mask can be worn more comfortably.

[0067] <Fourth Embodiment> FIG. 10 is a diagram showing an example of a mask frame according to the fourth embodiment, where (a) is an example of a perspective view and (b) is an example of a right side view. FIG. 11 is a diagram showing the usage state of the mask frame according to the fourth embodiment. The mask frame 1c according to the present embodiment has a top frame 10c, a bottom frame 20c, and a stop portion 40c that are different from the previous examples. Hereinafter, the different points will be mainly described.

[0068] As shown in the figure, the top frame 10c is horizontally provided in the left-right direction, and the central portion is located above the tip of the nose. The top frame 10c has a curved shape in which the central portion protrudes forward from both end portions, and preferably further protrudes generally upward. Although details will be described later, the top frame 10c does not have a nose contact portion and contacts the face at both left and right end portions. Preferably, the top frame 10c is provided with top contact portions 14c made of a cushioning material at both left and right end portions.

[0069] The top frame 10c is formed of a wire member that can be deformed in shape and can maintain the deformed shape. The top frame 10c may be formed of one frame portion as shown in the figure, or may be formed of two frame portions as in a modification example described later.

[0070] The top frame 10c is provided with top contact portions 14c at both ends thereof. The top contact portions 14c are shaped to cover both ends (the left end and the right end) of the top frame 10c, and are, for example, substantially cylindrical or substantially columnar with a receiving hole at one end. The top contact portions 14c are formed of a material such as silicon resin or rubber. Needless to say, when the entire top frame 10c is formed of a material having cushioning properties, a smooth material that causes less burden on the face, etc., a configuration without the top contact portions 14c may also be used.

[0071] Taking the right end of the top frame 10c as an example (the left end is symmetrically configured with the right end), the right top contact portion 14c is fitted to the right end portion extending to the right from the central portion, and this top contact portion 14c abuts on the face, more specifically, around the lower eyelid, so as to support the top frame 10c (or the mask frame 1c).

[0072] Preferably, as shown in the figure, the right end portion (the left end portion is symmetrically configured with the right end portion) of the top frame 10c is folded inward (bent inward) to form a return portion, and the top contact portion 14c is provided on this return portion and abuts on the face inside. By providing such a return portion, the top frame 10c can abut on the face more softly. Also, the return portion can adjust the gap in the front-rear direction between the mask and the face.

[0073] The bottom frame 20c has a substantially V-shaped bottom upper frame 21c convex upward and a bottom lower frame 22c convex outward. The bottom frame 20c is formed of the same material as the top frame 10c and can change its posture and maintain the posture after the change. Note that the bottom frame 20c may be composed of one frame portion as in the first embodiment described above.

[0074] The bottom frame 20c abuts on the face, more specifically, on the jaw, at both ends where the bottom upper frame 21c and the bottom lower frame 22c intersect. The bottom frame 20c is provided with bottom contact portions 24c at both ends thereof.

[0075] As an example, the bottom contact portion 24c is substantially cylindrical or substantially columnar with a receiving hole at one end. The bottom contact portion 24c is formed of a material such as silicon resin or rubber. Needless to say, when the entire bottom frame 20c is formed of a material having cushioning properties or a smooth material that causes less burden on the face, a configuration without the bottom contact portion 24c may be used.

[0076] Although not shown, similar to the top frame 10c, the left and right ends of the bottom frame 20c are folded inward (bent inward) to form a return portion, and the bottom contact portion 24c is provided on this return portion and may contact the face inside. By configuring in this way, the bottom frame 20c can contact the face softly. Also, the return portion can adjust the gap in the front-rear direction between the mask and the face.

[0077] The fixing portion 40c is for fixing the mask frame 1c to the mask, and is provided so as to protrude upward at the central portion of the top frame 10c. The fixing portion 40c is substantially U-shaped in side view, with the opening facing downward, one inner end connected to the top frame 10c, and the other outer end being a free end. The fixing portion 40c is formed of the same material as the top frame 10c and can change its posture and hold the posture after the change.

[0078] The mask frame 1c according to the present embodiment is used by being mounted inside the main body of the mask in the same manner as in the previous example. Although the mask is not shown in FIG. 11, the mask frame 1c is formed smaller than the main body of the mask in the same manner as in the previous example and can be used casually without worrying about the appearance. The mask frame 1c can achieve the same effect of forming a space where the inside of the mask and the face do not come into close contact, as in the previous example.

[0079] FIG. 12 is a diagram showing another example of the mask frame according to the fourth embodiment, where (a) is an example of a perspective view and (b) is an example of a right side view. As shown in the figure, the top frame 10c may be composed of two members, a top outer frame 11c provided on the outside and a top inner frame 12c provided on the inside thereof. Note that the frame portion of the illustrated top outer frame 11c may be arranged on the inside, and the frame portion of the illustrated top inner frame 12c may be arranged on the outside.

[0080] The top outer frame 11c and the top inner frame 12c are provided close to each other. For example, they are substantially in the same position vertically or substantially in the same position front and back. Here too, the top contact portion 14c is adapted to contact the face, and the nose contact portion is not provided on the top frame 10c (more specifically, the top inner frame 12c). Here, it is also possible to adjust the distance between the face and the mask by adjusting the front-back distance between the top outer frame 11c and the top inner frame 12c. Since the top frame 10c is formed of a material that can change its posture and hold the changed posture, the degree of curvature etc. may be changed to adjust the distance between the mask and the face. However, if two frame portions are provided, more flexible adjustment becomes possible.

[0081] The top outer frame 11c and the top inner frame 12c may be connected at the ends of both ends, or may be joined between the central portion and both ends as shown in the figure.

[0082] FIG. 13 is an example of a rear view showing an example of the mask frame according to the present invention. As described above, the mask frame according to the present invention is formed of a wire as an example. Here, as a specific example, an example in which the mask frame 1c of the fourth embodiment is formed of a wire is illustrated and described. The mask frame 1c may be formed of one wire or may be formed of two or more wires. The material of the wire is not particularly limited as long as its shape can be changed, such as aluminum, copper, steel, etc. Also, the wire may be coated or covered.

[0083] More specifically, as shown in the figure, the vertical frame 30c may be formed by twisting (twisting together) two wires. Thereby, the rigidity of the vertical frame 30c can be enhanced. The two wires constituting the vertical frame 30c may be separated at the upper end and bent to form the top outer frame 11c and the top inner frame 12c. The two wires constituting the vertical frame 30c may be separated at the lower end and bent to form the bottom upper frame 21c and the bottom lower frame 22c. The fixing part 40c may be formed by extending the two wires in a U shape while maintaining the interval between the wires and joining (joining) the two at the free end which is the other end.

[0084] Note that the mask frame 1c may be formed of a single wire. In this case, each component can be formed with both branched portions obtained by bending a single wire as portions corresponding to the aforementioned two wires.

[0085] Based on the above description, those skilled in the art may be able to conceive of additional effects and various modifications of the present invention, but the aspects of the present invention are not limited to the examples of the above-described embodiments. Various additions, changes, and partial deletions are possible without departing from the conceptual ideas and spirit of the present invention derived from the content defined in the claims and their equivalents.

Explanation of Reference Numerals

[0086] 1, 1a, 1b, 1c Mask frame 10, 10b, 10c Top frame 11, 11b, 11c Top outer frame 12, 12b, 12c Top inner frame 121, 121b Nose contact part 13b End part 14c Top contact part 20, 20a, 20c Bottom frame 21, 21a, 21c Bottom upper frame 22, 22a, 22c Bottom lower frame 24c Bottom contact part 30, 30c Vertical frame 40a, 40b, 40c stop portions

Claims

1. A frame used by being worn inside a mask, a top frame horizontally installed in the left - right direction with its central part located above the tip of the nose, a bottom frame horizontally installed in the left - right direction with its central part located below the lips, and a vertical frame connecting the central part of the top frame and the central part of the bottom frame in the up - down direction, and comprising: the top frame has a top outer frame provided on the outside and a top inner frame provided inside the top outer frame and contacting the nose. A frame for a mask, characterized by the above.

2. The frame for a mask according to Claim 1, wherein a nose - contacting part that is substantially V - shaped convex forward is provided at the central part of the top inner frame for contacting the nose. A frame for a mask, characterized by the above.

3. The frame for a mask according to Claim 1 or 2, wherein the top frame can change the front - rear interval between the top outer frame and the top inner frame. A frame for a mask, characterized by the above.

4. The frame for a mask according to any one of Claims 1 to 3, wherein the top outer frame of the top frame is located above the top inner frame. A frame for a mask, characterized by the above.

5. The frame for a mask according to any one of Claims 1 to 4, wherein a fixing part for fixing to the mask is provided at the central part of the top frame. A frame for a mask, characterized by the above.

6. The frame for a mask according to Claim 1, wherein the top frame contacts the face at both left and right ends. A frame for a mask, characterized by the above.

7. A frame used by being worn inside a mask, a top frame horizontally installed in the left - right direction with its central part located above the tip of the nose, a bottom frame horizontally installed in the left - right direction with its central part located below the lips, and a vertical frame connecting the central part of the top frame and the central part of the bottom frame in the up - down direction, and comprising: the top frame has top - contacting parts made of a cushioning material provided at both left and right ends. A frame for a mask, characterized by the above.

8. The frame for a mask according to any one of Claims 1 to 7, wherein the bottom frame has a bottom upper frame that is substantially V - shaped convex upward and a bottom lower frame connecting both lower end parts of the bottom upper frame. A frame for a mask, characterized by the above.

9. The frame for a mask according to Claim 8, The bottom frame can change the front-to-back distance between the upper bottom frame and the lower bottom frame. A frame for a mask, characterized in that. **Claim 10** A mask frame according to any one of Claims 1 to 9, wherein at least the cross-sections of the top frame and the bottom frame are circular. A frame for a mask, characterized in that. **Claim 11** A mask frame according to any one of Claims 1 to 10, wherein a material capable of changing the shape and maintaining the changed shape is used for any one or two or more of the top frame, the bottom frame, and the vertical frame. A frame for a mask, characterized in that.

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