Three dimensional mask

Abstract

To prevent a three dimensional mask from being collapsed by breathing by improving the surface area of a front shielding sheet in contact with air, reducing breathing resistance and improving the degree of support of a covering space in the limited length of the three dimensional mask.SOLUTION: The three dimensional mask 1 includes a front shielding sheet 2, an upper shielding sheet 3 and a lower shielding sheet 4, the upper shielding sheet and the lower shielding sheet are foldably connected to upper and lower edges of the front shielding sheet, when the upper shielding sheet and the lower shielding sheet are unfolded, the upper shielding sheet, the lower shielding sheet and the front shielding sheet can jointly form a covering space for accommodating the mouth and the nose, and the front shielding sheet has at least one longitudinal fold line 27, so that the front shielding sheet can be folded from a long material to a length matching the upper shielding sheet and the lower shielding sheet. Therefore, in a limited length of the three dimensional mask, the surface area of the front shielding sheet in contact with the air is increased, and the breathing resistance is reduced. The longitudinal folds improve the support of the covering space, and prevent the three dimensional mask from collapsing due to breathing.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a foldable and storable three-dimensional mask, and more particularly to a three-dimensional mask having vertical folds. [Background technology]

[0002] A mask is a protective device used to protect the respiratory tract, and is mainly made of multiple layers of filtering material (e.g., polypropylene, cotton cloth, etc.) to block airborne particles and droplets to achieve its protective effect. There are many different types of masks, mainly including medical masks, N95 masks, and non-medical masks, and there are also many different types in terms of appearance, each with different uses and protection levels.

[0003] In particular, conventional masks have problems such as poor shielding efficiency, insufficient coverage, and contact with the user's mouth when worn. To solve these problems, three-dimensional masks have appeared on the market. These three-dimensional masks fit the user's face better, forming a support space between the face and the mask, effectively supporting the mask and preventing the user's nostrils and lips from coming into direct contact with the inside of the mask.

[0004] However, because such masks require folds in specific locations to support the space, they cannot have as many folds as conventional masks, and the area of ​​contact with the outside of a 3D mask is very limited, resulting in higher breathing resistance than conventional masks. Therefore, how to reduce breathing resistance is one of the challenges that 3D masks must overcome. Summary of the Invention

[0005] The primary objective of the present invention is to provide a three-dimensional mask that can reduce breathing resistance, and by folding the mask through vertical folds, the mask has a maximum breathing area at a target horizontal length.

[0006] A secondary object of the present invention is to improve the support strength of the three-dimensional mask, so that the three-dimensional mask is less likely to collapse by folding the mask via the vertical folds.

[0007] Another object of the present invention is that the lacing tightness can be adapted to suit different users' head shapes.

[0008] In order to achieve the above object, the three-dimensional mask of the present invention comprises a front blocking sheet, an upper blocking sheet, and a lower blocking sheet, the upper blocking sheet being connected to the upper edge of the front blocking sheet, and the lower blocking sheet being connected to the lower edge of the front blocking sheet, and when the upper blocking sheet and the lower blocking sheet are unfolded relative to the front blocking sheet, the front blocking sheet is bent from a flat shape into an arch-shaped curved shape, and the upper blocking sheet and the lower blocking sheet align with the front blocking sheet to jointly form a covering space to accommodate the mouth and nose.

[0009] In particular, the original horizontal length of the front blocking sheet is greater than that of the upper blocking sheet and the lower blocking sheet, and by folding at least one folding portion on the front blocking sheet, the front blocking sheet is changed from its original horizontal length to a target horizontal length that matches the lengths of the upper blocking sheet and the lower blocking sheet, and the at least one folding portion has at least one vertical fold extending from the upper edge to the lower edge.

[0010] Furthermore, the at least one longitudinal fold line includes a plurality of inner fold lines that are folded inward and a plurality of outer fold lines that are folded outward, so that the folding portion is formed by repeatedly folding the front blocking sheet from the center to both sides along the inner fold lines a first distance inward and then folding the outer fold lines a second distance greater than the first distance, thereby forming a plurality of folds arranged at intervals in the folding portion. When the front blocking sheet has an arched curved surface, the folds are oriented in a tangential direction extending along the curved surface of the arched curved surface.

[0011] The upper shielding sheet also has a molding member that can change the curvature of the upper shielding sheet to match the bridge of the user's nose, thereby allowing the upper shielding sheet to fit the contours of the user's face.The upper shielding sheet has a shim on the surface that comes into contact with the user, the shim being made of a soft material and having a length greater than that of the molding member.

[0012] The front shielding sheet has a left side portion and a right side portion on each side, the upper shielding sheet has a first extension portion on each side, and the lower shielding sheet has a second extension portion on each side, the left side portion, the first extension portion, and the second extension portion jointly form a left connecting portion, and the right side portion, the first extension portion, and the second extension portion jointly form a right connecting portion, and the left connecting portion and the right connecting portion each have a through hole that can be seen from above and below.

[0013] The left and right connecting parts can be connected to a mask string, and both ends of the mask string pass through the through-holes of the left and right connecting parts respectively and are then connected to form a closed loop. The mask string includes an upper section and a lower section, and when one of the upper section and the lower section is lengthened, the other is simultaneously shortened, thereby adjusting the tightness of the three-dimensional mask when worn.

[0014] As can be seen from the above description, the features of the present invention are that the front blocking sheet having the folding portion allows the material originally having the original horizontal length to be shortened to the target horizontal length that matches the upper blocking sheet and the lower blocking sheet, and can improve the breathable surface area of ​​the front blocking sheet, the at least one vertical fold can improve the support of the covering space, the mask string is designed as the closed loop, and the upper section and the lower section can change their length to fit the shape of the user's head, but still have the same tightness. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a front view of a first preferred embodiment of a three-dimensional mask according to the present invention in a folded state. [Figure 2] FIG. 1 is a rear view of a folded state of a first preferred embodiment of a three-dimensional mask according to the present invention. [Figure 3] FIG. 1 is a front view of a first preferred embodiment of a three-dimensional mask and mask strings according to the present invention in an unfolded state. [Figure 4] FIG. 1 is a rear view of a first preferred embodiment of a three-dimensional mask and mask strings according to the present invention in an unfolded state. [Figure 5] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 6] FIG. 2 is a front view of a folded state of a second preferred embodiment of a three-dimensional mask according to the present invention. [Figure 7] FIG. 10 is a front view of a folded state of a third preferred embodiment of a three-dimensional mask according to the present invention. [Figure 8A] FIG. 10 is a front view of a connecting portion of a three-dimensional mask according to a fourth preferred embodiment of the present invention before bonding. [Figure 8B] FIG. 10 is a front view of the connecting portion of the fourth preferred embodiment of the three-dimensional mask according to the present invention after bonding. DETAILED DESCRIPTION OF THE INVENTION

[0016] In order to more clearly and specifically appreciate and understand the structure, use and features of the present invention, preferred embodiments will now be described in detail with reference to the accompanying drawings.

[0017] In this drawing, both sides of the X-axis refer to the left and right sides when the user wears the mask, the Y-axis refer to the front and back sides when the user wears the mask, and the Z-axis refer to the top and bottom sides when the user wears the mask. Furthermore, in this specification, directional terms such as "front," "back," "left," "right," "upper," and "lower" refer to the directions the user faces when wearing the mask.

[0018] Referring to Figures 1, 2, 3, and 4, the present invention provides a three-dimensional mask 1. A user can wear the three-dimensional mask 1 on their face to shield their mouth and nose and filter out harmful substances in the air for protection. The three-dimensional mask 1 includes a front blocking sheet 2, an upper blocking sheet 3, and a lower blocking sheet 4. The upper blocking sheet 3 is foldably connected to an upper edge 21 of the front blocking sheet 2, and the lower blocking sheet 4 is foldably connected to a lower edge 22 of the front blocking sheet 2. This allows the three-dimensional mask 1 to be folded for easy storage (Figure 1) and unfolded when worn (Figure 3). When the three-dimensional mask 1 is in the folded state, the upper and lower shielding sheets 3 and 4 are folded backward relative to the front shielding sheet 2 and can overlap the rear of the front shielding sheet 2, and whether the upper or lower shielding sheet 3 or 4 is folded first does not affect use. When the three-dimensional mask 1 is in the unfolded state, the upper and lower shielding sheets 3 and 4 are unfolded relative to the front shielding sheet 2. In this case, since the upper and lower shielding sheets 3 and 4 are unfolded, pulling the left and right sides of the front shielding sheet 2 backward causes the front shielding sheet 2 to be folded from a flat shape into an arched curved shape, and the upper and lower shielding sheets 3 and 4 fit together with the front shielding sheet 2 to form a covering space to accommodate the mouth and nose.

[0019] 1, 2 and 5. In particular, the original width of the front blocking sheet 2 is greater than that of the upper shielding sheet 3 and the lower shielding sheet 4, and at least one folding portion is folded on the front blocking sheet 2. In a first preferred embodiment, the first folding portion 231 and the second folding portion 232 are folded on the front blocking sheet 2, thereby forming the left side portion 24, the first folding portion 231, the first non-pleated portion 251, the second folding portion 232 and the right side portion 26 in this order, and the front blocking sheet 2 is changed from its original width to a target width L1 that matches the lengths of the upper shielding sheet 3 and the lower shielding sheet 4, and the first folding portion 231 and the second folding portion 232 have a plurality of vertical folds 27 extending from the upper edge 21 to the lower edge 22.

[0020] The longitudinal folds 27 include a plurality of inner folds 271 that are folded inward and a plurality of outer folds 272 that are folded outward, so that the folded portions are folded inward along the inner folds 271 a first distance L2 from the center of the front blocking sheet 2 to both sides, and then folded outward along the outer folds 272 a second distance L3 that is greater than the first distance L2, repeatedly forming a plurality of spaced-apart folds 28 in the folded portions. When the front blocking sheet 2 is in the flat state, the folds 28 of the first folded portion 231 face leftward, and the folds 28 of the second folded portion 232 face rightward. When the front blocking sheet 2 is in the arched curved state, the folds 28 face tangentially along the curved surface of the arched curved surface.

[0021] 2, 3, and 4 again, the upper shielding sheet 3 further includes a shaping member 31 that can change the curvature of the upper shielding sheet 3 to fit the bridge of the user's nose, thereby enabling the upper shielding sheet 3 to fit the contours of the user's face. The surface of the upper shielding sheet 3 that comes into contact with the user includes a shim 32 made of a soft material and having a length greater than that of the shaping member 31, thereby preventing the user from feeling uncomfortable when their nose is pressed against the shaping member 31.

[0022] In addition, both sides of the upper shielding sheet 3 have first extension portions 50, and both sides of the lower shielding sheet 4 have second extension portions 51, and the first extension portions 50 and the second extension portions 51 are the same size and connected to the rear of the left side portion 24 and the right side portion 26. The left side portion 24, the first extension portion 50 on the left side, and the second extension portion 51 on the left side together form a left connection portion 60, and the right side portion 26, the first extension portion 50 on the right side, and the second extension portion 51 on the right side together form a right connection portion 61, and the left connection portion 60 and the right connection portion 61 have inner and outer joining lines 62 and 63, respectively, and the left connection portion 60 and the right connection portion 61 are connected only via the inner and outer joining lines 62 and 63, so that a through-hole (not shown) visible from above and below is formed between the inner and outer joining lines 62 and 63.

[0023] The inner and outer joining lines 62 and 63 can be joined by hot pressing or adhesive. The outer joining line 63 is wider than the inner joining line 62, ensuring high stability on both sides of the three-dimensional mask 1.

[0024] 3 and 4, the left and right connecting portions 60 and 61 can be connected to the mask strings 7, and both ends of the mask strings 7 pass through the through-holes of the left and right connecting portions 60 and 61, respectively, and are then connected to form a closed loop that cannot be separated from the three-dimensional mask 1. The mask strings 7 include an upper section 71 located above the through-holes and a lower section 72 located below the through-holes. When one of the upper section 71 and the lower section 72 is lengthened, the other is simultaneously shortened, thereby adjusting the tightness of the three-dimensional mask 1 when worn.

[0025] In the first preferred embodiment, referring again to Figures 1, 2, 3, 4, and 5, when the three-dimensional mask 1 is in the folded state, the front shielding sheet 2, the upper shielding sheet 3, and the lower shielding sheet 4 are folded inward, and the surfaces that come into contact with the user are not exposed, ensuring hygiene during storage. After the user unfolds and wears the upper shielding sheet 3 and the lower shielding sheet 4, the three-dimensional mask 1 is in the unfolded state. In this case, the upper shielding sheet 3 contacts the bridge of the user's nose, the lower shielding sheet 4 contacts the user's chin, and the upper section 71 of the mask string 7 is secured to the head above the user's ears, and the lower section 72 is secured to the head below the user's ears, thereby supporting the covering space. The upper section 71 and the lower section 72 can fit any head shape, and even if the upper section 71 and the lower section 72 are of different lengths, the tightness is always maintained the same, reducing discomfort for the user. The covering space can accommodate the user's mouth and nose, and the mouth does not come into contact with the front blocking sheet 2. The multiple vertical folds 27 not only provide the front blocking sheet 2 with a wide ventilation area, but also improve the vertical support force of the front blocking sheet 2.

[0026] Referring again to Figure 6, the second preferred embodiment differs from the first preferred embodiment only in the shape of the front blocking sheet 2. The other structures are all the same as those of the first preferred embodiment, and therefore a repeated description will be omitted. In particular, the front blocking sheet 2 is folded at a single folding portion, whereby the front blocking sheet 2 sequentially forms the left side portion 24, the second non-pleat portion 252, the third folding portion 233, the third non-pleat portion 253, and the right side portion 26. In the third folding portion 233, the folds 28 located to the left of the center face leftward, and the folds 28 located to the right of the center face rightward.

[0027] Referring again to Figure 7, the third preferred embodiment differs from the first preferred embodiment only in the shape of the front blocking sheet 2. The other structures are the same as those of the first preferred embodiment, and a redundant description will be omitted. Specifically, the front blocking sheet 2 is folded at a single folding portion, thereby forming a left side portion 24, a fourth folding portion 234, and a right side portion 26 in that order. In the fourth folding portion 234, the folds 28 located to the left of the center face leftward, and the folds 28 located to the right of the center face rightward, thereby providing the three-dimensional mask 1 of the present invention with the largest ventilation area and the most favorable support.

[0028] 8A and 8B, the fourth preferred embodiment differs from the first preferred embodiment only in the method of forming the left connecting portion 60 and the right connecting portion 61. The remaining structures are the same as those of the first preferred embodiment, and therefore, a repeated description will be omitted. Specifically, the upper shielding sheet 3 and the lower shielding sheet 4 do not have the first extending portion 50 and the second extending portion 51. After the upper shielding sheet 3 and the lower shielding sheet 4 are connected via the inner joining line 62, a portion of the area of ​​the left side 24 and the right side 26 exceeds the area of ​​the upper shielding sheet 3 and the lower shielding sheet 4. The excess area can be connected to two joining points 64 after being folded forward along the inner joining line 62. Thus, the left side 24 is folded to form the left connecting portion 60, and the right side 26 is folded to form the right connecting portion 61. The through-holes are formed between the inner joining line 62 and the two joining points 64. Furthermore, the left side 24 and the right side 26 have a plurality of wrinkles, so that the outer shape of the left side 24 and the right side 26 resembles a fish tail.

[0029] As described above, the present invention utilizes the folding portion to maximize the ventilation area of ​​the front blocking sheet 2 at the target horizontal length L1, thereby reducing the breathing resistance of the three-dimensional mask 1, and the multiple vertical folds 27 of the folding portion can improve the stability of the covered space without damaging the existing three-dimensional structure of the covered space. [Explanation of symbols]

[0030] 1. 3D mask 2 Front barrier sheet 21 Upper edge 22 Lower edge 231 First folding section 232 Second folding section 233 Third folding section 234 Fourth Folding Section 24 left side 251 First pleat-less section 252 Second pleat-less section 253 Third pleat-less section 26 Right side 27 Vertical fold 271 Inner fold 272 Outer fold 28 Fold 3 Upper shielding sheet 31 Molded parts 32 Sim 4 Bottom shielding sheet 50 1st extension section 51 2nd extension section 60 Left connection 61 Right connection 62 Internal joint line 63 Outer junction line 64 Junction 7 Mask strings 71 Upper Section 72 Lower Section L1 Target width L2 1st distance L3 Second distance

Claims

1. The mask comprises a front blocking sheet, an upper blocking sheet, and a lower blocking sheet, the upper blocking sheet being connected to an upper edge of the front blocking sheet, and the lower blocking sheet being connected to a lower edge of the front blocking sheet, and when the upper blocking sheet and the lower blocking sheet are unfolded relative to the front blocking sheet, the front blocking sheet is folded from a flat shape into an arch-shaped curved surface, and the upper blocking sheet and the lower blocking sheet are fitted to the front blocking sheet to jointly form a covering space for accommodating the mouth and nose, A three-dimensional mask characterized in that the original horizontal length of the front blocking sheet is larger than that of the upper blocking sheet and the lower blocking sheet, and by folding at least one folding portion on the front blocking sheet, the front blocking sheet is changed from the original horizontal length to a target horizontal length that matches the lengths of the upper blocking sheet and the lower blocking sheet, and the at least one folding portion has at least one vertical fold extending from the upper edge to the lower edge.

2. 2. The three-dimensional mask of claim 1, wherein the at least one vertical fold includes a plurality of inner folds that are folded inward and a plurality of outer folds that are folded outward, and the folding portion is formed by repeatedly folding the front blocking sheet from the center to both sides along the inner folds inward a first distance and then folding the front blocking sheet outward along the outer folds a second distance greater than the first distance, thereby forming a plurality of folds arranged at intervals in the folding portion.

3. 3. The three-dimensional mask according to claim 2, wherein when the front blocking sheet has an arched curved surface, the plurality of folds are directed in a tangential direction extending along the curved surface of the arched curved surface.

4. The three-dimensional mask of claim 1, characterized in that the upper shielding sheet has a molding member that can change the curvature of the upper shielding sheet to match the bridge of the user's nose, thereby allowing the upper shielding sheet to fit the contours of the user's face.

5. 5. The three-dimensional mask according to claim 4, further comprising a shim made of a soft material and having a length greater than that of the molding member, on the surface of the upper shielding sheet that comes into contact with the user.

6. The three-dimensional mask of claim 1, characterized in that the front shielding sheet has a left side portion and a right side portion on each side, the upper shielding sheet has a first extension portion on each side, the lower shielding sheet has a second extension portion on each side, the left side portion, the first extension portion and the second extension portion collectively form a left connecting portion, the right side portion, the first extension portion and the second extension portion collectively form a right connecting portion, and the left connecting portion and the right connecting portion each have a through hole visible from above and below.

7. 7. The three-dimensional mask according to claim 6, wherein the left and right connecting portions can be connected to a mask string, both ends of which pass through the through-holes of the left and right connecting portions, respectively, and then are connected to form a closed loop, and the mask string includes an upper section and a lower section, and when one of the upper section and the lower section is lengthened, the other is simultaneously shortened, thereby adjusting the tightness of the three-dimensional mask when worn.

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