JP7437940B2 - mask - Google Patents

Description

The present invention relates to a mask that covers a large area of the wearer's face and is comfortable to use, and particularly relates to a pleated mask.

Masks are used for a variety of purposes, including preventing dust, pollen, and preventing the spread of one's own cough. Therefore, masks are used regardless of the season.

There are various types of masks, such as a pleated mask that has a plurality of folds formed by mountain folding along the lateral direction, and a three-dimensional mask that does not have folds and has a shape that follows the unevenness of the face.

The above-mentioned pleated mask has a substantially flat mask body before use, and is a type that fits tightly against the wearer's face by opening the pleats appropriately during use, and the aspect ratio of the mask body is approximately 1:1.6. The mainstream is about 1:1.85. This ratio is widely accepted by those skilled in the art as an appropriate ratio that can sufficiently cover the area from the nasal cavity and mouth to the chin while maintaining good adhesion to the face. With this ratio, by adopting a design in which the left and right sides of the mask body are placed near the apex of the wearer's cheekbones, the pleats are wide open in the vertical direction in the center of the mask body, while the left and right sides of the mask body are It can be brought into close contact with the wearer's face (specifically, the area from the vicinity of the top of the cheekbones to the tip of the chin).

On the other hand, for the purpose of providing a mask with higher adhesion, a horizontally elongated three-dimensional mask has been proposed. Specifically, Patent Document 1 below proposes a three-dimensional mask in which the horizontal length of the mask body is set so that the left and right sides of the mask body reach the vicinity of the ears.

Utility model registration No. 3100600

However, conventional masks have the following problems.
In other words, although conventional pleated masks have the advantage of being easily matched to the face shape and size of many wearers (hereinafter sometimes abbreviated as "face shape, etc.") due to their pleats, The size is short, and the wearer's cheeks are widely exposed on the ear side from the left and right sides located near the top of the cheekbones. Therefore, there is a problem in that in the summer, there is a difference in the degree of sunburn between the covered and uncoated parts of the cheeks, and in the winter, the covered and uncoated parts have a large difference in skin feel relative to the outside temperature.

On the other hand, although the horizontally elongated mask described in Patent Document 1 solves the above-mentioned problem of the pleated mask, the wearer may feel breathless compared to the pleated mask. Pleated masks can easily be adapted to the shape and size of the wearer's face by adjusting the way the pleats open, whereas the mask described in Patent Document 1 has a fixed shape, so there are no gaps. This is because the above-mentioned mouth space is difficult to secure due to the design that does not allow this.
In addition, the shape of the mask described in Patent Document 1 cannot be adjusted by the wearer, so if the wearer's face is small, a gap is likely to occur between the mask and the face, and if the wearer's face is large, Eyes, chin, etc. may not be adequately covered.

The present invention has been made in view of the above-mentioned problems. That is, the present invention provides a pleated mask that can be easily adapted to the shape of the wearer's face, etc., does not make breathing difficult, can sufficiently cover the wearer's ears, and has high adhesion.

The mask of the present invention has a mask body including a breathable sheet material, and the mask body has a plurality of pleats having mountain folds folded along the lateral direction, and the left and right sides of the mask body is located on the ear side of the midpoint between the wearer's cheekbone apex and the inner end of the external auditory canal opening, and the horizontal dimension of the mask body is 2.7 times or more and 4.4 times or less with respect to the vertical dimension of the mask body. A first joining part is provided near the left and right sides of the mask main body in order to maintain the shape of the fold, and a first joint part is provided near the left and right sides of the mask body, and the first joining part is provided closer to the center in the left and right direction than the first joining part. A second joint portion is provided to control the opening of at least a portion of the folds, and the mask body has at least three folds formed therein, and the middle folds formed at the middle portion in the vertical direction are controlled to open. an upper joint part that controls the opening of the upper pleat provided above the intermediate pleat, and a lower part that controls the opening of the lower pleat provided below the intermediate pleat. the upper joint part is located closer to the ear than the second joint part, and the lower joint part is located closer to the mouth than the second joint part when viewed in the lateral direction. and connects a first intermediate point that is one-half of the length of the upper joint and a second intermediate point that is one-half of the length of the lower joint. The intersection angle θ between the first imaginary line and a second imaginary line that extends in the vertical direction and includes the intersection where the first imaginary line and the second joint intersect is 30 degrees or more and 50 degrees or less. It is characterized by

The mask of the present invention having the above configuration has the advantages of a conventional pleated mask in that it can be easily adapted to the shape of the wearer's face, provides an appropriate amount of space around the mouth, and can reach around the ears while maintaining good adhesion. Can be coated.

FIG. 1 is a front view of a mask according to one embodiment of the present invention. 2 is a sectional view taken along line AA of the mask shown in FIG. 1. FIG. (3a) is a partial front view of a mask according to one embodiment of the mask of the present invention, and (3b) is a partial front view of a mask according to another embodiment of the present invention. FIG. 2 is an explanatory diagram showing a state in which the mask of the present invention is worn on a person. (5a) is an explanatory diagram showing a state in which a conventional mask is worn on a person, and (5b) is a front view of the conventional mask.

The present invention provides a pleated mask that can cover not only the nasal cavity, mouth, and chin, but also the vicinity of the ears, while maintaining good adhesion. According to the inventors' extensive studies, if a conventional pleated mask is simply expanded and designed to cover the ears, the mask body will bend in the vertical direction near the ears and good adhesion will not be maintained. I understand. Therefore, after repeated consideration, we created a shape that is significantly elongated in the horizontal direction, something that has never been seen before, which deviates from the common sense aspect ratio of conventional pleated masks.We were able to expand the coverage area while maintaining good adhesion. They discovered that it is possible and completed the present invention. Moreover, although the mask of the present invention has a distinctive shape that is clearly different from that of conventional pleated masks before use, when worn, it is different from conventional pleated masks except that it covers a wide area up to the ears. There is no noticeable difference in appearance. Therefore, the mask of the present invention can provide the wearer with a good feeling of use without causing any discomfort in appearance. The mask of the present invention may be, for example, a disposable mask, or may be a mask that has a replaceable gauze section inside the mask body and can be used repeatedly.

Embodiments of the present invention will be described below using FIGS. 1 to 5. In all the drawings, similar components are designated by the same reference numerals, and overlapping explanations will be omitted as appropriate.
Note that when describing the mask, directions such as up, down, left and right, horizontal, and vertical refer to the up, down, left, and right directions of the mask viewed from the front as seen in the paper of FIG.
FIG. 1 is a front view of a mask 100 according to one embodiment of the present invention. The front side here means the surface that is exposed to the outside when worn by a wearer. FIG. 2 is a sectional view taken along line AA of the mask 100 shown in FIG. 3a is a partial front view of mask 100, and FIG. 3b is a partial front view of mask 110, which is a variation of mask 100. FIG. FIG. 4 is an explanatory diagram showing a state in which the mask of the present invention is worn on a person (wearer 200). In FIG. 4, a part of the structure of the mask 100 is omitted as appropriate.
FIG. 5a is an explanatory diagram showing a state in which a conventional mask 300 is worn by a person (wearer 200), and FIG. 5b is a front view of the conventional mask 300. Although pleats are not shown in the mask 300, the mask 300 may be provided with pleats similar to those of a general pleated mask as appropriate.

As shown in FIG. 1, the mask 100 has a mask body 10 comprising a breathable sheet material, and the mask body 10 has pleats 14 having mountain folds 12 (see FIG. 2) folded along the lateral direction. There are several. The mask 100 having a plurality of pleats 14 is a so-called pleated mask.
In the mask 100, the left and right sides (right side 21, left side 22) of the mask body 10 are located on the ear side from the midpoint between the cheekbone vertex 202 of the wearer 200 and the inner end of the external auditory canal opening 204 (FIG. 4). reference). The mask 100 of the present invention is configured such that the horizontal dimension X of the mask body 10 is in a range of 2.7 times or more and 4.4 times or less with respect to the vertical dimension Y of the mask body 10 described above.

In the present invention, the cheekbone apex 202 refers to a point where the cheekbones are bulging in a general skeleton, and roughly refers to a position slightly below the outer corner of the wearer's 200 eyes and closer to the ear. In the present invention, the inner end of the external auditory canal opening 204 refers to the opening of the external ear and the end on the face side. The apex of the cheekbone 202 and the inner end of the ear canal opening 204 are terms used to explain that the right side 21 and the left side 22 of the mask 100 are arranged near the ear, but do not define a single exact point. be.

As shown in FIG. 5a, in the conventional mask 300, the left and right sides (the left side 306 is shown in FIG. 5a) are generally placed near the vertex 202 of the cheekbones of the wearer 200. According to this design, it is easy to bring the left and right sides of the wearer 300 into close contact with each other from the vicinity of the vertex 202 of the cheekbone to the chin. In order to obtain such adhesion, the conventional mask body 302 shown in FIG. 5b is designed to have an aspect ratio of about 1:1.6 to 1:1.85. The mask body 302 shown in FIG. 5b is specifically illustrated with an aspect ratio of 1:1.8.
However, in such a configuration, as can be understood from FIG. 5a, the ear side of the wearer's 200 cheek is exposed more than the vicinity of the cheekbone apex 202.

On the other hand, the mask 100 of the present invention is configured to have an elongated shape in the left-right direction, and as shown in FIG. Placed. Therefore, it is possible to secure a large coverage area of the wearer's 200 face from the vicinity of one ear to the vicinity of the other ear, and since it has multiple folds along the horizontal direction, it is possible to secure a large coverage area of the wearer's face in the vertical direction. Coverage area can also be secured as before. Moreover, since the vertical dimension ratio is smaller than the horizontal dimension, the left and right sides are less likely to bend near the ears, and gaps are less likely to occur.
Further, when comparing the mask 100 in FIG. 1 and the mask 300 in FIG. 5b, it is clearly understood that the mask 100 has a unique horizontally elongated shape that has never been seen before. However, when worn, as can be understood by comparing the mask 100 shown in FIG. 4 with the mask 300 shown in FIG. , there is almost no difference in appearance when worn compared to the mask 300. That is, although the mask 100 has a very distinctive shape before being worn, it does not give an unnatural appearance when being worn.
The mask 100 will be explained in more detail below.

(Mask body)
The mask body 10 is placed at a position facing the face of the wearer 200. The shape of the mask body 10 is not particularly limited. For example, as shown in FIG. 1, the mask main body 10 may have a rectangular shape including an upper side 26, a lower side 27, a right side 21, and a left side 22 in the shape before wearing.
As shown in FIGS. 1 and 2, the mask main body 10 has a folded end 54 in which the upper and lower ends of the sheet material constituting the mask main body 10 are folded back toward the front side, and the vicinity of the folded end 54 on the upper side 26 side is They are joined by an upper side joint part 53, and the vicinity of the folded end 54 on the lower side 27 side is joined by a lower side joint part 53'. In FIG. 2, the upper side joint part 53 and the lower side joint part 53' are shown painted black.
Further, a nose fitter 51 is built in the bag-shaped folded portion joined by the upper side joint portion 53. By deforming the nose fitter 51 to match the shape of the nose of the wearer 200, the attachment position of the mask body 10 can be stabilized. In order to prevent the placement position of the nose fitter 51 from shifting, joint portions that serve as nose fitter stoppers 52 are appropriately provided in the folded portion of the upper side 25 and near both left and right ends of the nose fitter 51.

Note that, in the present invention, the joint portion is a portion where the mask main body 10 is joined and fixed in the thickness direction. The joining method is not particularly limited, and for example, welding processes such as ultrasonic sealing and heat sealing are common, but other methods such as sewing may also be used. In this embodiment, a joint portion formed exclusively by welding will be described.

When the mask 100 is worn, the left and right sides of the mask body 10 are arranged on the ear side from the midpoint between the vertex 202 of the cheekbone of the wearer 200 and the inner end 204 of the ear canal opening, as shown in the left side 22 shown in FIG. Ru. More preferably, it is placed near the ears so that the cheeks are not substantially exposed between the left and right sides and the ears.

In the mask 100, the horizontal dimension X of the mask body 10 is 2.7 times or more and 4.4 times or less, preferably 3.3 times or more and 3.9 times or less, with respect to the vertical dimension Y of the mask body 10. . The vertical dimension Y here means the dimension in the vertical direction of the mask body 10 with the folds 14 folded before wearing, and the horizontal dimension X means the dimension in the vertical direction of the mask body 10 with the folds 14 folded before wearing. It means the dimension of a certain mask body 10 in the left-right direction. By adopting such a ratio, the coverage area for the wearer 200 can be significantly expanded compared to the conventional case while maintaining good adhesion to the face.
Although not shown, if the mask body 10 has a non-rectangular shape, the above-mentioned vertical dimension Y means the dimension when the right side 21 and the left side piece 22 have the same size, and when they are different, the vertical dimension Y means the right side side 21 and the left side piece 22. It means the shorter dimension of either side 21 or left side piece 22. Moreover, the above-mentioned lateral dimension X means the maximum dimension in the left-right direction of the mask body 10 in a state in which the folds 14 are folded before mounting.

The size of the mask body 10 is not particularly limited, but for example, before wearing and with the folds 14 folded, the vertical dimension Y can be 60 mm or more and 75 mm or less, and the lateral dimension X can be 200 mm or more and 260 mm or less. . Further, in the mask body 10, the vertical dimension Y when the folds 14 are fully opened can be approximately 130 mm or more and 150 mm or less.
In the mask body 10, the ratio of the maximum value (maximum length) of the vertical dimension Y when the folds 14 are fully opened to the vertical dimension Y (minimum length) on the left and right sides before wearing is as follows: minimum length: maximum length = 1 : preferably about 1.5 to 1:2.5, and more preferably about 1:1.8 to 1:2.1 (minimum length: maximum length). In this way, by designing the vertical dimension Y of the left and right sides disposed near the ears to be relatively small and by providing an appropriate amount of folding of the folds 14, the nasal cavity can be easily It can be designed to sufficiently cover from the chin to the tip of the chin.

The breathable sheet material constituting the mask body 10 is not particularly limited as long as it is breathable to the extent that the wearer 200 wearing the mask 100 can breathe comfortably. For example, the mask body 10 can be made of any one or a combination of nonwoven fabrics, woven fabrics, knitted fabrics, and the like. Further, the mask body 10 may have a single layer structure made of a single sheet material, or may have a laminated structure made of a plurality of sheet materials laminated.

The function of the mask 100 can be changed by the sheet material. For example, UV treatment may be applied by adding titanium oxide to the nonwoven fabric, or the basis weight and gas permeability of the sheet material may be adjusted to shield particles such as dust, pollen, or viruses. can. Furthermore, a plurality of functions can be added to the mask 100 by laminating a UV-treated UV cut sheet material and a shielding sheet material capable of shielding the particles.

More specifically, for example, a summer mask can be provided by laminating a UV-cutting sheet material and a pollen-shielding sheet material or a virus-shielding sheet material. The summer mask may have a laminated structure including, from the front side, a first UV cut sheet material, a second UV cut sheet material, and a shielding sheet material. It is preferable to laminate a plurality of UV cut sheet materials so that the total of these sheet materials blocks 90% or more of UV. The laminated structure in the summer mask may be composed of nonwoven fabrics, or may be composed of a combination of a nonwoven fabric sheet and a nonwoven fabric sheet.

Next, the folds 14 in the mask body 10 will be explained. As shown in FIG. 2, the mask body 10 has a plurality of pleats 14 having mountain folds 12 folded along the lateral direction. By providing the folds 14, it is possible to provide a mask 100 that is comfortable to use and ensures a suitable mouth space according to the shape of the face of the wearer 200, suppressing breathlessness.

As shown in FIG. 1, first joint portions 40 are provided near the left and right sides (right side piece 21, left side piece 22) of the mask body 10 in order to maintain the shape of the folds 14. The first joining part 40 is a part that joins the plurality of folds 14 formed in the mask body 10 in the thickness direction and maintains the folded state, and generally, the first joining part 40 is a part that joins the plurality of folds 14 formed in the mask main body 10 and maintains the folded state. It is provided near the outer edge of the mask body 10. In the mask body 10 shown in FIG. 1, the entire folds 14 (the first folds 14a, the second folds 14b, the third folds 14c, and the fourth folds 14d) are welded by the first joint 40 and the folded shape is maintained. ing.
In addition to the first joint part 40, a second joint part 42 for controlling the opening of at least a portion of the pleats 14 is provided closer to the center in the left-right direction (hereinafter also referred to as the center of the mask) than the first joint part 40. It is preferable. In the mask body 10 shown in FIG. 1, among the plurality of folds 14, the folds are located at an intermediate position in the vertical direction between the first fold 14a provided on the upper side and the fourth fold 14d provided on the lower side. , the intermediate folds (the second folds 14b and the third folds 14c) are joined by the second joint portion 42. For example, the number of pleats 14 joined by the second joints 42 is the same as or less than the number joined by the first joints 40.

The second joint part 42 controls the opening of the area from the first joint part 40 to the second joint part 42 of the pleats 14 joined by the second joint part 42, and also controls the opening of the area from the first joint part 40 to the second joint part 42. It serves as a fulcrum for the opening of the folds 14 toward the center. By providing a fulcrum slightly closer to the center than the first joint 40, the three-dimensionality of the mask body 10 when worn can be improved and contact of the mask body 10 with the mouth can be suppressed. Thereby, it is possible to provide a mask 100 that reduces breathlessness for the wearer 200 and provides a better feeling of use.
The position of the second joint portion 42 can be appropriately determined by taking into account the person to whom the mask 100 is to be worn, the specified size (adult male, adult female, child, L size, M size, etc.). If the second joint portion 42 is provided too close to the mask center of the mask body 10, the opening of the pleats 14 will be controlled too much and the operating range of the pleats will be reduced. As a result, the area from the second joining part 42 on the right side to the right side 21 and the area from the second joining part 42 on the left side to the left side 22 in the mask main body 10 become difficult to follow the lines of the face. The area may wrinkle and create gaps.
Therefore, for example, the distance from the center of the mask to the second joint 42 is preferably 75 mm or more and 95 mm or less, more preferably 80 mm or more and 90 mm or less, and even more preferably 83 mm or more and 88 mm or less. The above-mentioned distance refers to the distance between the center of the mask and the part of the second joint 42 that is closest to the center of the mask. By designing the arrangement position of the second joint part 42 within this numerical range, even when used by a person with a small face, it is difficult to create a gap between the mask body 10 and the face, and on the other hand, when used by a person with a large face. Even in such a case, insufficient coverage of the eyes and chin can be effectively prevented.

The first joint part 40 and the second joint part 42 shown in FIG. 1 each consist of a plurality of point-like weld parts, and these weld parts are arranged in alignment on a straight line extending in the vertical direction. , are formed parallel to each other. As a modification not shown, one or both of the first joint part 40 and the second joint part 42 may be composed of a plurality of weld parts arranged in a non-linear manner such as a curved line or a zigzag, or It may be composed of a single weld line formed continuously. Further, the first joint portion 40 and the second joint portion 42 may be non-parallel.

In the mask 100 in which three or more folds 14 are formed, a more preferable embodiment includes a mode in which further different bonding portions are formed above and below the second bonding portion 42 described above.
That is, as shown in FIG. 1, the mask body 10 may be formed with at least three folds 14 (FIG. 1 shows an embodiment in which four folds 14 are formed). Here, it has a second joint part 42 that controls the opening of the intermediate folds (second folds 14b and third folds 14c in FIG. 1) formed in the middle part of the mask body 10 in the vertical direction, and An upper joint part 44 that controls the opening of the upper fold (first fold 14a in FIG. 1) provided above, and an upper joint part 44 that controls the opening of the lower fold (fourth fold 14d in FIG. 1) provided below the intermediate fold. Preferably, at least one of the lower joints 46 is provided to control. In this aspect, when viewed in the lateral direction, the upper joint 44 is located closer to the ear than the second joint 42, and the lower joint 46 is located closer to the mouth than the second joint 42.

In the mask book 100, which has an elongated shape in which the right side 21 and the left side 22 are arranged near the ears and has a small vertical to horizontal dimension ratio, by further providing the upper joint part 44 and/or the lower joint part 46, the following can be achieved. The effect is demonstrated.
That is, by providing the upper joint portion 44, the adhesion of the mask body 10 to the bulge of the cheekbones can be maintained well, and the generation of gaps around the cheekbones can be well prevented. Further, by providing the lower joint portion 44, it is possible to effectively prevent the occurrence of a gap near the jaw.

Further, according to the studies of the present inventors, when the second joint part 42 that controls the opening of the intermediate fold is provided, by further providing the upper joint part 44 and the lower joint part 46, the opening of the mouth space can be improved. It has been found that it is possible to provide a sufficient amount of Specifically, if the upper joint part 44 is not provided for the second joint part 42, the upper fold (first fold 14a) opens with the first joint part 40 as a fulcrum, so that the inside of the mask main body 10 The space formed in the mouth is dispersed, and it may not be possible to secure sufficient space at the mouth where three-dimensionality is most required. Similarly, if the lower joint part 46 is not provided, the folds in the lower region of the mask body 10 will open wide and the entire jaw can be completely covered, but the space around the mouth will be crushed and the three-dimensionality will be impaired. There is.
Therefore, from the viewpoint of providing a mask 100 that maintains good adhesion to the face and suppresses breathlessness by ensuring a sufficient space around the mouth, the upper joint part 44 and the lower joint part 46 are particularly important. It is preferable to provide one.
As can be understood from FIG. 1, when the mask 100 is schematically viewed, in the mask body 10, the upper joint part 44, the second joint part 42, and the lower joint part 46 slope downward from the ears toward the chin in this order. placed on the line. By configuring each fold 14 to open around this line as a fulcrum, the mask 100 allows the horizontally elongated mask body 10 to be brought into close contact with the face without any gaps, and to ensure sufficient space around the mouth. be able to.

Although it depends on the dimensions of the mask 100 and the intended user, the distance between the lower end of the upper joint part 44 and the upper end of the second joint part 42 should be It is preferably 5 mm or more and 15 mm or less, and more preferably 7 mm or more and 13 mm or less.
Similarly, in order to more fully exhibit the effect of the lower joint part 46, the distance between the upper end of the lower joint part 46 and the lower end of the second joint part 42 is preferably 15 mm or more and 25 mm or less, and 17 mm or more. More preferably, it is 23 mm or less.

As shown in FIG. 1, the upper joint portion 44 may include a plurality of welded portions, and these welded portions may be arranged on a straight line extending in the vertical direction. In this embodiment, the upper joint 44 extends parallel to the second joint 42 . As a modification not shown, the upper joint part 44 may be composed of a plurality of welded parts formed on a non-linear line such as a curved line or a zigzag, or a single welded line formed continuously. It may be composed of. Moreover, the upper joint part 44 and the second joint part 42 may be non-parallel.

On the other hand, when the mask main body 10 is viewed from the front, the lower joint portion 46 may be formed to slope downward from the ear direction toward the chin direction, as shown in FIG. Providing the lower joint portion 46 at an angle as described above is preferable because the gap between the mask body 10 and the chin can be kept small and the mask body 10 can be fitted well to the jaw line. As mentioned above, the obliquely inclined lower joint part 46 may be constructed by arranging a plurality of dot-shaped weld parts in one direction like the upper joint part 44, but the above effect can be achieved with a relatively short length dimension. In order to achieve good performance, it is preferable that the welded portion be constructed of a continuous linear welded portion as shown in FIG.

The positional relationship in the left-right direction of the second joint portion 42, the upper joint portion 44, and the lower joint portion 46 described above can be determined as appropriate without departing from the spirit of the present invention. As shown in FIG. 3A, a more preferable positional relationship is between a first intermediate point 44x, which is a point halfway in the length direction of the upper joint part 44, and a point halfway in the length direction of the lower joint part 46. a first imaginary line I connecting the second intermediate point 46x, and a second imaginary line II extending in the vertical direction including the intersection 42x where the first imaginary line I and the second joint 46 intersect; The intersection angle θ is preferably 30 degrees or more and 50 degrees or less, and more preferably 35 degrees or more and 45 degrees or less. stomach. The mask 100 in which such a positional relationship is adopted covers the cheeks of the wearer 200 up to the vicinity of the ears, allows the mask body 10 to better adhere to the face from the vicinity of the vertex 202 of the cheekbones to the chin, and reduces the space around the mouth. Sufficient amount can be secured.

A modified version of mask 100, mask 110, is partially shown in FIG. 3b. The mask 110 is configured such that the second joint portion 42 is configured with a plurality of welded portions arranged on a curved line convex toward the ear, and the lower joint portion 46 is not obliquely inclined but is a straight line extending in the vertical direction. It has the same structure as the mask 100 except that it is formed in a shape.
In the mask 110 as well, the intersection angle θ between the first virtual line I and the second virtual line II is preferably 30 degrees or more and 50 degrees or less, as described above.

The aspect of the mask main body 10 specifically shown in FIG. 2 has at least four folds 14 from the top to the bottom: a first fold 14a, a second fold 14b, a third fold 14c, and a fourth fold 14d. The folding direction of each of these folds 14 is not particularly limited, but for example, as shown in FIG. It is preferable that the folds 14c form a folded portion 50 having a substantially Ω-shaped cross section.
The fold 50 has a second fold 14b consisting of a mountain fold 12 and a valley fold 13, and a third fold 14c similarly consisting of a mountain fold 12 and a valley fold 13. The third fold 14c is folded downward. Also, at this time, the first fold 14a is folded in the same direction as the second fold 14b (that is, upward), and the fourth fold 14d is folded in the same direction as the third fold 14c (that is, downward). ing.

When the folds 14 of the mask main body 10 including the folded portion 50 having a substantially Ω-shaped cross section are opened, the region covering the nasal cavity and the mouth becomes dome-shaped, and a good mouth space is easily formed. Therefore, it is difficult for the wearer 200 to experience discomfort such as difficulty breathing or contact between the mouth and the back surface of the mask body 10.

In the mask main body 10 including the above-mentioned folding part 50, the second joint part 42 is provided across the second fold 14b and the third fold 14c in front view, and the upper joint part 44 is provided across the first fold 14a. On the other hand, the lower joint portion 46 is provided on the fourth fold 14d. In the drawing, the first pleat 14a and the fourth pleat 14d each consist of one pleat 14, but they can also each consist of two or more pleats 14.

Note that the folding direction of the pleats 14 described above does not limit the present invention in any way. The folding direction of the plurality of pleats 14 may be a so-called 99 fold, in which the folding direction is unified upward or downward, or each pleat 14 may be folded randomly upward or downward. good.

The above description does not limit the present invention in any way, and for example, any combination or all of the upper joint part 44, the second joint part 42, and the lower joint part 46 are The present invention includes an embodiment in which the jaws are arranged on a substantially continuous line toward the jaw side. The substantially continuous line herein may be a straight line or may be a non-straight line such as a curved line or a meandering line.

(Mask body fixing part)
The mask 100 includes the above-described mask body 10 and an attachment part for attaching it to the face. The attachment portion is a portion that allows the mask main body 10 to remain placed on the face of the wearer 200. The illustrated mask 100 includes ear hook portions 30 provided on or near the right side 21 and left side 22 of the mask body 10 as attachment portions. Further, other attachment parts (not shown) may be provided, for example, on the back surface (face side surface) of the mask main body 10, and may be adhesive parts that can be removed and attached to the face.

The present invention described above includes the following technical ideas.
(1) It has a mask body equipped with a breathable sheet material,
The mask main body has a plurality of folds having mountain folds folded along the lateral direction,
The left and right sides of the mask main body are located on the ear side of the midpoint between the wearer's cheekbone apex and the inner end of the external auditory canal opening,
A mask characterized in that a horizontal dimension of the mask body is 2.7 times or more and 4.4 times or less as compared to the vertical dimension of the mask body.
(2) A first joint portion is provided near the left and right sides of the mask body to maintain the shape of the folds, and
The mask according to (1) above, wherein a second joint portion that controls opening of at least a portion of the folds is provided closer to the center in the left-right direction than the first joint portion.
(3) at least three folds are formed in the mask main body,
It has the second joint portion that controls the opening of the intermediate fold formed at the intermediate portion in the vertical direction, and
It has at least one of an upper joint portion that controls the opening of the upper pleats provided above the intermediate pleats, and a lower joint portion that controls the opening of the lower pleats provided below the intermediate pleats,
(2) above, wherein the upper joint part is located closer to the ear than the second joint part, and the lower joint part is located closer to the mouth than the second joint part when viewed in the lateral direction. The mask described in.
(4) having the upper joint part and the lower joint part,
A first imaginary connecting a first intermediate point that is one-half of the length of the upper joint and a second intermediate point that is one-half of the length of the lower joint; Lines and,
The mask according to (3) above, wherein the intersection angle θ between the first imaginary line and the second imaginary line extending in the vertical direction including the intersection point where the second joint portion intersects is 30 degrees or more and 50 degrees or less. .
(5) The mask according to (3) or (4) above, wherein when the mask main body is viewed from the front, the lower joint portion is formed to slope downward from the ear direction toward the chin direction.
(6) The mask main body has at least four folds from the top to the bottom: a first fold, a second fold, a third fold, and a fourth fold,
On a cut surface obtained by cutting the mask main body along the vertical direction, the second fold and the third fold form a folded portion having a substantially Ω-shaped cross section;
The first fold is folded in the same direction as the second fold, and the fourth fold is folded in the same direction as the third fold. Mask as described.

10, 302...Mask body 12...Mountain fold part 13...Valley fold part 14...Fold 14a...First fold 14b...Second fold 14c...Third fold 14d. ...Fourth fold 21, 305...Right side 22, 306...Left side 26...Upper side 27...Lower side 30, 304...Ear hook part 40...First joint Part 42...Second joint part 42x...Intersection 44...Upper joint part 44x...First intermediate point 46...Lower joint part 46x...Second intermediate point 50...Folding part 51...Nose fitter 52...Nose fitter stopper 53...Upper side joint part 53'...Lower side joint part 54...Folded ends 100, 110, 300...Mask 200... Wearer 202... Cheekbone vertex 204... Inner end of ear canal opening X... Lateral dimension Y... Vertical dimension I... First imaginary line II... Second imaginary line θ... Intersection angle

Claims (3)

having a mask body comprising a breathable sheet material;
The mask main body has a plurality of folds having mountain folds folded along the lateral direction,
The left and right sides of the mask main body are located on the ear side of the midpoint between the wearer's cheekbone apex and the inner end of the external auditory canal opening, and
The horizontal dimension of the mask body is 2.7 times or more and 4.4 times or less with respect to the vertical dimension of the mask body,
A first joint portion is provided near the left and right sides of the mask body to maintain the shape of the folds, and
A second joint portion that controls the opening of at least a portion of the fold is provided closer to the center in the left-right direction than the first joint portion,
At least three folds are formed in the mask body,
It has the second joint portion that controls the opening of the intermediate fold formed at the intermediate portion in the vertical direction, and
an upper joint portion that controls the opening of the upper pleat provided above the intermediate pleat; and
a lower joint part for controlling the opening of a lower fold provided below the intermediate fold;
When viewed in the lateral direction, the upper joint part is located closer to the ear than the second joint part, and the lower joint part is located closer to the mouth than the second joint part,
A first imaginary connecting a first intermediate point that is one-half of the length of the upper joint and a second intermediate point that is one-half of the length of the lower joint; Lines and,
A mask characterized in that an intersection angle θ between the first imaginary line and a second imaginary line that includes an intersection point where the second joint portion intersects and extends in the vertical direction is 30 degrees or more and 50 degrees or less. The mask according to claim 1 , wherein when the mask main body is viewed from the front, the lower joint portion is formed to slope downward from the ear direction toward the chin direction. The mask main body has at least four folds from the top to the bottom: a first fold, a second fold, a third fold, and a fourth fold,
On a cut surface obtained by cutting the mask main body along the vertical direction, the second fold and the third fold form a folded portion having a substantially Ω-shaped cross section;
3. The mask according to claim 1, wherein the first fold is folded in the same direction as the second fold, and the fourth fold is folded in the same direction as the third fold .

Images