JP2023026952A - mask inner - Google Patents

Abstract

To provide a mask inner that can reduce the load onto the face of a wearer thereof.SOLUTION: A mask inner 10 comprises a main body part 11 that covers a mouth 61 and a nose hole 63a. The main body part 11 includes: a pair of right and left first abutting parts 13 that abut the area above the upper end of the nose hole 63a and under the bottom end of the eyes on a face 60; and a pair of right and left second abutting parts 14 that abut the area under the bottom end part of a lower lip 61b and above the bottom end part of a chin 67. The main body 11 includes: a first connection part 26 that connects each of the first abutting parts 13; a second connection part 35 that connects the first abutting part 13 and the second abutting part 14; and a third connection part 44 that connects each of the second abutting part 14. The first connection part 26, the second connection part 35, and the third connection part 44 are formed into a curved shape that projects forward against the face 60 and are elastically deformable following the deviation of the first abutting parts 13 and the second abutting parts 14, forming a space from the face 60.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a mask inner that can reduce the burden on the user's face when wearing the mask.

A support member for a mask described in Patent Literature 1 is known as one that improves comfort and cleanliness when wearing a mask.

The above mask support member has a mask support member main body that covers at least the mouth of the user, and is attached to the mask to prevent contact between the mask and at least the mouth of the user. As a result, it is possible to prevent the mask from touching the lips when the user speaks and feel uncomfortable, and to prevent makeup, saliva, etc. from adhering to the mask.

JP 2020-180424 A

However, while the contact between the mask and the user's face can be suppressed, the mask support member is in close contact with the user's face. Therefore, there is a concern that the mask support member itself may put a burden on the user's face.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a mask inner that can reduce the burden on the user's face.

In order to achieve the above object, the mask inner of the present invention is
A mask inner used by being interposed between the mask and the user's face,
a main body that covers the user's mouth and nostrils and secures a space between the mask and the user's mouth and nostrils;
The main body is
A pair of left and right first contact portions that contact a region of the user's face that is above the upper ends of the nostrils and below the lower ends of the eyes;
a second contact portion that contacts an area of the user's face that is below the lower end of the lower lip and above the lower end of the chin;
a first connecting portion that connects the first contact portions to each other and constitutes a part of the peripheral portion of the main body;
a second connecting portion that connects each of the first contact portions and the second contact portions and constitutes a part of the peripheral portion of the main body;
has
The first connecting portion and the second connecting portion have a curved shape that protrudes forward with respect to the user's face, and are elastically deformed as the first contact portion and the second contact portion are displaced. It is characterized by being possible.

According to the present invention, the mask inner comes into contact with the user's face through the pair of left and right first contact portions and the second contact portion. The peripheral portion of the main body portion of the mask inner includes a first connecting portion connecting the first contact portions and a second connecting portion connecting the first contact portion and the second contact portion. , and the first connecting portion and the second connecting portion have a curved shape that protrudes forward. As a result, the area of contact between the mask inner and the user's face can be reduced compared to a configuration in which the entire peripheral portion of the main body portion is in contact with the user's face.

In addition, by reducing the contact area between the mask inner and the face, when the user moves the mouth, the first contact part and the second contact part slide on the user's face and use the mask. There is concern that the person's face may be rubbed. In this regard, the first connecting portion and the second connecting portion are elastically deformable according to the movements of the first contact portion and the second contact portion. Thereby, the mask inner can be deformed to follow the movement of the user's mouth. Therefore, when the user moves his/her mouth, the first contact portion and the second contact portion are less likely to slide on the user's face, and the user's face can be prevented from being rubbed.

As described above, it is possible to reduce the burden on the user's face with regard to the mask inner.

FIG. 2 is a perspective view showing the state of use of the mask inner according to the present embodiment; (a) is a front view of a mask inner, and (b) is a side view. (a) is a plan view of the mask inner, and (b) is a bottom view. The figure which shows the position where a mask inner contact|abuts on a user's face. The front view which shows a mode that a mask inner deform|transforms. The figure which shows the other example of a mask inner.

An embodiment embodying a mask inner according to the present invention will be described below with reference to FIGS. 1 to 3. FIG.

<Overview of Mask Inner 10>
First, the mask inner 10 according to the present embodiment will be schematically described. The mask inner 10 is used when the user wears the mask 50 .

As shown in FIG. 1 , the mask inner 10 is used while interposed between the user's face 60 and the mask 50 . The mask inner 10 is made up of a plurality of frames and has a main body 11 that covers the user's mouth 61 and nostrils 63a. The main body 11 has an annular frame 12 surrounding the mouth 61 and nostrils 63a, and a central frame 16 connecting the upper and lower portions of the annular frame 12 and extending vertically. The central frame 16 is provided so as to straddle the mouth 61 and the nostrils 63a, and a gap is formed between the central frame 16 and the mouth 61 and the nostrils 63a. Thereby, a space is secured between the body portion 11 and the mouth 61 and the nostrils 63a.

Therefore, when the user wears the mask 50, if the mask inner 10 is interposed between the face 60 and the mask 50, the mask inner 10 secures a space between the mask 50 and the mouth 61 and nostrils 63a. can do. Therefore, it is possible to prevent the mask 50 from coming into contact with the mouth 61 and the nostrils 63a and make the user feel uncomfortable, and prevent makeup, saliva, etc. from adhering to the mask 50.例文帳に追加

The mask inner 10 has a pair of left and right hook portions 15 . The hook portion 15 corresponds to a locking portion and can be hooked on the upper edge portion of the mask 50 . Thereby, it is possible to prevent the mask inner 10 from slipping off the mask 50 .

<Regarding the detailed configuration of the mask inner 10>
Next, the mask inner 10 will be described in detail. The mask inner 10 is formed symmetrically when viewed from the front (see FIG. 2(a)).

The annular frame 12 is formed in a substantially square annular shape with rounded corners when viewed from the front. The peripheral portion of the annular frame 12 is composed of an upper frame 21 forming its upper side, a pair of left and right side frames 31 forming its left and right sides, and a lower frame 41 forming its lower side.

A pair of left and right center frames 16 are provided so as to vertically connect the upper frame 21 and the lower frame 41 . The horizontal spacing between the central frames 16 gradually narrows from the upper end to the lower end. At the upper end of each center frame 16, the horizontal interval between each center frame 16 is set to be wider than the standard width of a human nose bridge 63b (see FIG. 1(b)). .

An auxiliary frame 17 is provided at the upper end of each central frame 16 so as to connect the upper ends of the central frames 16 together. That is, the auxiliary frame 17 is further connected to the joint between the central frame 16 and the upper frame 21 . The auxiliary frame 17 is formed in an arc obliquely downward and obliquely forward when viewed from the user, and is arranged at a position covering the front of the nostril 63a. Thereby, contact between the mask 50 and the nostrils 63a can be more reliably suppressed. In the following description, the joint between the central frame 16, the upper frame 21, and the auxiliary frame 17 is called the first joint 18, and the joint between the central frame 16 and the lower frame 41 is called the second joint 19. There is

The central frame 16, the auxiliary frame 17, the upper frame 21, the side frames 31, the lower frame 41, and the hook portion 15, which constitute the mask inner 10, are made of elastically deformable polystyrene resin and are all integrally molded. Each of the frames 16, 17, 21, 31, 41 has a flattened cross-section with rounded corners so that the wide surface is in contact with the user. Examples of flat shapes with rounded corners include a rectangular shape with chamfered corners, an elliptical shape, and a rhombus shape with chamfered corners and one diagonal longer than the other. Each of the frames 16, 17, 21, 31, and 41 is elastically deformed toward the flattened wide surface.

The upper frame 21, the side frames 31, the lower frame 41, the central frame 16, and the auxiliary frame 17 that constitute the main body portion 11 are all curved. The manner in which the frames 16, 17, 21, 31, and 41 are curved will be described below.

When viewed from the front, the upper frame 21 has almost no vertical curvature at the intermediate portion, but is slightly curved downward near the left and right ends, and the left and right ends correspond to the upper ends of the side frames 31 . are connected (see FIGS. 2(a) and 2(b)).

In plan view, the upper frame 21 gradually protrudes forward from the left and right ends toward the center (see FIG. 3A). The upper frame 21 has a pair of left and right bent portions 22, and a portion closer to the center in the left-right direction than the bent portions 22 is bent forward. As a result, the amount of forward protrusion of the upper frame 21 is relatively small in the sections from the left and right ends to the bent portions 22 (hereinafter referred to as “outer sections 22a”). In the section (hereinafter referred to as "inner section 22b"), the amount of forward protrusion is relatively large. Thus, the upper frame 21 is composed of an outer section 21a and an inner section 22b.

The upper frame 21 has a chevron shape in which the outer section 21a forms a substantially straight line and the inner section 21b protrudes forward in a plan view. Specifically, the upper frame 21 has a pair of left and right inflection points 24 at predetermined intervals from each bent portion 22 in the inner section 21b. In the section between each inflection point 24, the upper frame 21 is curved so as to bulge outward in the left-right direction (or forward when viewed from the user), and in the section outside each inflection point 24, the upper frame 21 is curved to the left and right. It is curved so as to be concave toward the center of the direction. That is, the inner section 21b curves forward to match the ridge around the bridge of the nose 63b.

The upper frame 21 is connected to each center frame 16 and auxiliary frame 17 outside each inflection point 24 . In other words, the first joint 18 is formed outside each inflection point 24 . The hook portion 15 is joined to the upper frame 21 at each bent portion 22 (see FIGS. 2(a) and 2(b)). The hook portion 15 protrudes forward from the upper frame 21 and has a hook piece portion 15a extending downward from the projecting end. The hook portion 15 has an annular portion 15b extending downward from the upper frame 21 with a predetermined distance from the hook piece portion 15a in the front-rear direction.

The side frame 31 has two upper and lower inflection points 32 and 33 . In the section from the upper end to the inflection point 32 (hereinafter referred to as "upper section 31a"), the side frame 31 is configured such that the upper end of the upper section 31a is convex outward and rearward in the left-right direction. curved into. In the section between the inflection point 32 and the inflection point 33 (hereinafter referred to as "intermediate section 31b"), the central portion of the intermediate section 31b is convex toward the center side and the front side in the left-right direction. curved. In the section from the inflection point 33 to the lower end (hereinafter referred to as "lower section 31c"), the lower end of the lower section 31c curves outward and rearward in the left-right direction. Thus, the side frame 31 is composed of an upper section 31a, an intermediate section 31b and a lower section 31c.

The lower frame 41 has a central portion positioned slightly above the left and right ends. The lower frame 41 is slightly curved upward in the vicinity of its left and right ends, and is connected to the lower ends of the side frames 31 .

The lower frame 41 gradually protrudes forward from the left and right ends toward the center (see FIG. 3(b)). The lower frame 41 has a pair of left and right bent portions 42 near both left and right ends, and a portion closer to the center in the left-right direction than the bent portions 42 is bent forward. As a result, the amount of forward protrusion of the lower frame 41 is relatively small in the section (outer section 41a) from the left and right ends to the bent portions 42, and the section (inner section 41b) between the bent portions 42 is relatively small. ) is relatively large. Thus, the lower frame 41 is composed of an outer section 41a and an inner section 41b.

In addition, the lower frame 41 has an outer section 41a that is substantially linear in bottom view. On the other hand, in the inner section 41b, the lower frame 41 is bent at each of the second joints 19 to form a convex shape that narrows forward and has a substantially trapezoidal shape in which the bottom side is cut off. Specifically, the section between the second joints 19 forms the upper base of the trapezoid, and the section outside the second joints 19 in the horizontal direction forms the oblique sides of the trapezoid. In this way, the inner section 41b has a shape that protrudes forward along with the bulge around the chin 67. As shown in FIG.

As described above, the upper frame 21, the side frames 31, and the lower frame 41 that constitute the annular frame 12 all have a curved shape that protrudes forward with respect to the face 60 of the user.

On the other hand, the central frame 16 has a curved shape that slightly bulges forward and outward in the left-right direction (see FIGS. 2(a) and 2(b)). The degree of curvature of the central frame 16 is smaller than that of the upper frame 21 , the side frames 31 and the lower frame 41 that constitute the annular frame 12 .

The auxiliary frame 17 has a mountain-shaped curved shape in which the central portion is convex forward and downward.

Next, the positional relationship among the upper frame 21, the side frame 31, the lower frame 41, the central frame 16, and the auxiliary frame 17 that constitute the main body 11 will be described.

In the side view, the central portion of the auxiliary frame 17 is located in the frontmost position in the inner mask 10 (see FIG. 2(b)). Next, the central portion of the upper frame 21 is located behind the central portion of the auxiliary frame 17 . Next, the central portion of the lower frame 41 (specifically, the section between the second joints 19) is located behind the central portion of the upper frame 21. As shown in FIG.

The first joint portion 18 of the upper frame 21 is located rearward of the central portion of the lower frame 41 . That is, the second joint portion 19 is positioned forward of the first joint portion 18 . The central frame 16 protrudes forward in a gentle arc from the upper end to the lower end.

The side frame 31 is positioned rearward of the first joint 18 as a whole. The hook portion 15 is positioned rearward of the first joint portion 18 and forward of the side frame 31 .

In a plane view and a bottom view, the upper frame 21 covers the lower frame 41 from the front side in the area of the mask inner 10 that is closer to the center in the left-right direction than the first joints 18 , and the auxiliary frame 17 covers the lower frame 41 from the front side. It further covers the upper frame 21 from the front side (see FIGS. 3(a) and 3(b)). In other words, the mountain shape of the upper frame 21 is arranged inside the mountain shape of the auxiliary frame 17 , and the substantially trapezoidal shape of the lower frame 41 is arranged inside the mountain shape of the upper frame 21 .

<Position where mask inner 10 contacts face 60>
Next, the position where the inner mask 10 contacts the face 60 when the user uses the inner mask 10 will be described with reference to FIG. A person's face has various muscles of facial expression on the back side of the surface skin. Therefore, in the left half of FIG. 4A, the positions and names of facial muscles around the mouth 61 and nose 63 are illustrated. Specifically, the positions and names of the zygomaticus minor muscle 71, the levator lip superior muscle 72, the zygomaticus major muscle 73, the levator lip flexor 74, the depressor lip 76, the depressor lower lip 77, and the geniomus 78 are shown. These muscles have the function of moving the mouth 61 by pulling up the upper lip 61a and pulling down the lower lip 61b.

The mask inner 10 is used by being interposed between the mask 50 and the face 60. - 特許庁At this time, as shown in FIG. 4A, the mask inner 10 is arranged so that the annular frame 12 surrounds the mouth 61 and the nostrils 63a when viewed from the front.

Specifically, when viewed from the front, the upper frame 21 extends laterally in a region above the upper end of the user's nostril 63a and below the lower end of the eye 65, and intersects the bridge of the user's nose 63b. ing. The left and right ends of the upper frame 21 are in contact with the skin on the front surface of the zygomaticus minor muscle 71 .

The lower frame 41 extends laterally in a region below the lower end of the user's lower lip 61 b and above the lower end of the chin 67 . The left and right ends of the lower frame 41 are in contact with the skin in front of the depressor muscles 76 at the corners of the mouth.

The side frames 31 are connected to the left and right ends of the upper frame 21 and the left and right ends of the lower frame 41 . Therefore, the upper end of the side frame 31 abuts the skin in front of the zygomaticus minor muscle 71 , and the lower end abuts the skin in front of the depressor corner of the mouth 76 .

Here, as shown in FIG. 4(b), the upper frame 21, the lower frame 41 and the side frames 31 are all curved such that the intermediate portions are convex forward. Thereby, the intermediate portions of the upper frame 21 , the lower frame 41 and the side frames 31 are spaced apart from the face 60 .

Specifically, as described above, the upper frame 21 has a relatively large amount of forward protrusion in the inner section 21b and a relatively small amount in the outer section 21a. The inner section 21b is curved forward to match the ridge around the bridge of the nose 63b. Thereby, the inner section 21b can avoid contact with the vicinity of the bridge of the nose 63b and has a gap with the face 60. As shown in FIG. On the other hand, the outer section 21 a abuts on the skin in front of the zygomaticus minor muscle 71 and the levator labialis muscle 72 .

The amount of forward protrusion of the lower frame 41 is also relatively large in the inner section 21b and relatively small in the outer section 21a. As a result, the inner section 21b can avoid the bulging of the chin 67 and has a gap with the face 60 . On the other hand, the outer section 21 a abuts on the skin in front of the depressor muscle 76 at the corner of the mouth and the depressor muscle 77 at the lower lip.

The side frame 31 has an intermediate section 31b protruding forward, and an upper section 31a and a lower section 31c protruding rearward. Thereby, the side frame 31 has a space between the intermediate section 31b and the face 60. As shown in FIG. The upper section 31 a abuts the skin on the front surface of the zygomaticus minor muscle 71 and the levator angled muscle 74 . The lower section 31c abuts the skin on the front surface of the depressor muscle 76 at the corner of the mouth.

That is, in the mask inner 10, the outer section 21a of the upper frame 21 and the upper section 31a of the side frame 31 are positioned above the upper end of the user's nostril 63a and below the lower end of the eye 65. It abuts on the skin in front of the zygomaticus minor muscle 71 , the levator labialis superior muscle 72 and the depressor inferior lip muscle 77 . In the mask inner 10 , a section composed of the outer section 21 a of the upper frame 21 and the upper section 31 a of the side frame 31 corresponds to the first contact portion 13 . In addition, since the mask inner 10 is formed symmetrically, the left and right first contact portions 13 are provided as a pair.

In addition, the mask inner 10 has the outer section 41a of the lower frame 41 and the lower section 31c of the side frame 31 in a region below the lower end of the user's lower lip 61b and above the lower end of the chin 67. is in contact with the skin in front of the depressor corners of the mouth 76 and the depressor lower lip 77 . In the mask inner 10 , a section composed of the outer section 41 a of the lower frame 41 and the lower section 31 c of the side frame 31 corresponds to the second contact portion 14 . Since the mask inner 10 is formed symmetrically, the second contact portions 14 are also provided as a left and right pair.

The inner section 21b of the upper frame 21 corresponds to the first connecting portion 26 that connects the first contact portions 13 to each other. The intermediate section 31 b of the side frame 31 corresponds to the second connecting portion 35 connecting the first contact portion 13 and the second contact portion 14 . The inner section 41b of the lower frame 41 corresponds to the third connecting portion 44 that connects the second contact portions 14 to each other. The central frame 16 corresponds to the fourth connecting portion, and the auxiliary frame 17 corresponds to the projecting portion. In the following description, the inner section 21b may be referred to as the first connecting portion 26, the intermediate section 31b may be referred to as the second connecting portion 35, and the inner section 41b may be referred to as the third connecting portion 44.

The first connecting portion 26, the second connecting portion 35, and the third connecting portion 44 are made of elastically deformable polystyrene resin and have a shape curved forward. As a result, when the first contact portion 13 and the second contact portion 14 are displaced, the first connecting portion 26, the second connecting portion 35, and the third connecting portion 44 change in degree of curvature. It can stretch and contract. Therefore, when the user moves the mouth 61 , the mask inner 10 can be deformed to follow the movement around the mouth 61 .

In each figure, the position where the mask inner 10 contacts the face 60 is merely an example, and varies depending on the size and shape of the user's face. In other words, the position where the inner mask 10 and the face 60 abut is not limited to the range described above. However, the position at which the first contact portion 13 contacts the face 60 is preferably at least one muscle selected from the group consisting of the zygomaticus minor muscle 71, the levator lip superioris muscle 72, the levator lip muscle 74, and the zygomaticus major muscle 73. It should be on the front skin. More preferably, the first contact portion 13 is on the skin on the front surface of at least one muscle selected from the group consisting of the zygomaticus minor muscle 71, the levator labialis superior muscle 72, and the levator angularis muscle 74. It may be on the skin in front of the zygomaticus minor muscle 71 .

The position where the second contact portion 14 contacts the face 60 is preferably the front surface of at least one muscle selected from the group consisting of the depressor mouth corner 76, the depressor lower lip 77, and the chin muscle 78. It should be on the skin. More preferably, it is on the skin in front of at least one muscle selected from the group consisting of the depressor mouth corner muscle 76 and the depressor lower lip muscle 77, and more preferably on the skin on the surface of the depressor mouth corner muscle 76. should be

<Regarding how the mask inner 10 deforms>
As described above, the inner mask 10 can be deformed to follow the movement of the mouth 61 of the user. Therefore, how the mask inner 10 deforms according to the opening of the user's mouth 61 will be described with reference to FIG. Since the mask inner 10 is made of elastically deformable polystyrene resin, it elastically returns to its original shape when the user closes the mouth 61 .

As shown in FIG. 5A, when the user opens the mouth 61 vertically, the first contact portion 13 and the second contact portion 14 are separated vertically. At this time, since the intermediate portion of the side frame 31 is curved, the side frame 31 is stretched in the vertical direction so as to eliminate the bending caused by the curve. As a result, the mask inner 10 as a whole deforms so as to extend in the vertical direction. On the other hand, the central frame 16 has a slight degree of curvature, making it difficult to deform. As a result, excessive deformation of the inner mask 10 can be suppressed, and the inner mask 10 can easily return to its original shape.

Moreover, even if the user opens the mouth 61 in the vertical direction, the upper frame 21, the lower frame 41 and the auxiliary frame 17 hardly deform. Therefore, the distance between the upper frame 21 (first connecting portion 26), the lower frame 41 (second connecting portion 35) and the auxiliary frame 17 and the face 60 is kept substantially constant. In this way, the mask inner 10 is designed so that the mask 50 and the face 60 do not come too close together with the vertical movement of the mouth 61 .

As shown in FIG. 5B, when the user opens the mouth 61 in the horizontal direction, the first contact portions 13 are separated from each other in the horizontal direction, and the second contact portions 14 are separated from each other in the horizontal direction. will be separated. At this time, since the intermediate portions of the upper frame 21 and the lower frame 41 are curved, they are stretched in the left-right direction so that the bending due to the bending is eliminated. As a result, the mask inner 10 as a whole deforms so as to extend in the left-right direction.

It should be noted that when the body portion 11 is stretched, the curved portion of the body portion 11 is stretched, and the curved portion approaches the face 60 . Even in such a case, the degree of curvature of the body portion 11 is set so that portions of the body portion 11 other than the first contact portion 13 and the second contact portion 14 do not come into contact with the face 60 . ing.

Further, when the body portion 11 extends in the left-right direction, the curve of the upper frame 21 is elongated, and the forward protrusion amount of the central portion of the upper frame 21 becomes smaller. As a result, there is concern that the mask 50 and the nostrils 63a may approach each other. Therefore, the mask inner 10 is provided with an auxiliary frame 17 that protrudes further forward than the upper frame 21 . The auxiliary frame 17 extends in the lateral direction in accordance with the movement of the mouth 61, but the amount of deformation thereof is smaller than that of the upper frame 21.例文帳に追加Therefore, even when the mask inner 10 extends in the left-right direction, the forward protrusion amount of the central portion of the auxiliary frame 17 hardly changes. In other words, the auxiliary frame 17 has a function of preventing the mask 50 and the nostrils 63a from approaching each other without preventing the inner mask 10 from extending in the lateral direction. As a result, the mask inner 10 can prevent the mask 50 from approaching the nostrils 63a as the mouth 61 moves in the horizontal direction.

The deformation of the facial muscles that the mask inner 10 can follow is not limited to that involving opening the mouth 61 vertically and horizontally. The mask inner 10 can be deformed to follow various deformations of facial muscles in daily life, such as moving the jaw with the mouth 61 closed and moving the corners of the mouth up and down.

According to the structure of this embodiment detailed above, the following excellent effects are obtained.

The mask inner 10 includes a pair of left and right first contact portions 13 (the outer section 21a of the upper frame 21 and the upper section 31a of the side frame 31) and a pair of left and right second contact portions 14 (the outer side of the lower frame 41). The section 41 a and the upper section 31 a ) of the side frame 31 abut against the face 60 . The annular frame 12 includes a first connecting portion 26 (an inner section 21b of the upper frame 21) connecting the first contact portions 13 to each other, and a second connecting portion 26 connecting the first contact portion 13 and the second contact portion 14 to each other. It has two connecting portions 35 (intermediate section 31b of the side frame 31) and a third connecting section 44 (inner section 41b of the lower frame 41) that connects the second contact portions 14 to each other. The first connecting portion 26 , the second connecting portion 35 and the third connecting portion 44 have gaps with the face 60 . As a result, the contact area between the mask inner 10 and the face 60 can be reduced compared to a structure in which the peripheral edge of the main body 11 contacts the face 60 over the entire area. Therefore, the burden on the user's face 60 can be reduced.

・By reducing the contact area between the mask inner 10 and the face 60, the first contact portion 13 and the second contact portion 14 slide on the face 60 when the user moves the mouth 61. , the face 60 may be rubbed. Therefore, the first connecting portion 26 , the second connecting portion 35 and the third connecting portion 44 have a curved shape that protrudes forward with respect to the face 60 . Moreover, it is made of polystyrene resin and is elastically deformable according to the movement of the first contact portion 13 and the second contact portion 14 . Thereby, the mask inner 10 can be deformed to follow the movement around the mouth 61 . Therefore, when the user moves the mouth 61 , the first contact portion 13 and the second contact portion 14 can be prevented from sliding on the face 60 and rubbing the face 60 . can reduce the burden on

For example, when the user speaks, the mouth 61 is opened vertically and horizontally, and the mask inner 10 can be deformed to follow the opening of the mouth 61 vertically and horizontally. As a result, even when the user speaks while using the mask 50 and the inner mask 10 , it is possible to prevent the face 60 from being rubbed by the periphery of the mask 50 and the inner mask 10 .

The deformation of facial muscles that the inner mask 10 can follow is not limited to that involving opening the mouth 61 vertically and horizontally. The mask inner 10 can be deformed to follow various deformations of facial muscles in daily life, such as moving the jaw with the mouth 61 closed and moving the corners of the mouth up and down. Thereby, even if the mask 50 and the mask inner 10 are used for a long time, it is possible to suppress the face 60 from being rubbed by the peripheral edge of the mask 50 and the mask inner 10 .

- The cross section of each frame 16, 17, 21, 31, 41 has a flattened shape with rounded corners, and the wide surface comes into contact with the user. As a result, compared with the case where the frames 16, 17, 21, 31, and 41 each have a circular cross section, for example, the contact pressure on the face 60 can be reduced because the face 60 contacts the face 60 with a flatter surface. can. Since the corners of the cross sections of the frames 16, 17, 21, 31, and 41 are rounded, it is possible to prevent the corners from digging into the face 60 as the facial expression of the user changes. As a result, pain in the user's face 60 during use of the mask inner 10 can be suitably suppressed.

- Each of the frames 16, 17, 21, 31, and 41 is elastically deformed toward the flattened wide surface. That is, the directions in which each frame 16, 17, 21, 31, 41 can be elastically deformed are restricted. Thereby, each frame 16, 17, 21, 31, 41 can be guided to deform in a desired direction. By suppressing unnecessary deformation of each frame 16, 17, 21, 31, 41, the strength of the mask inner 10 can be increased.

The central frame 16 vertically connects the intermediate portion of the upper frame 21 and the intermediate portion of the lower frame 41 and is provided so as to straddle the mouth 61 and the nostrils 63a. Spaces are formed between the central frame 16 and the mouth 61 and nostrils 63a. This can prevent the mask 50 from approaching the user's mouth 61 and nostrils 63a when the user takes a breath or when the main body 11 is deformed. Therefore, the user can comfortably wear the mask 50 even when breathing becomes rougher than usual, such as during exercise.

- By providing the central frame 16, the strength of the main body part 11 can be increased. The central frame 16 is less curved than the annular frame 12 and the central frame 16 . As a result, the central frame 16 is relatively resistant to elastic deformation. Since the central frame 16 contributes little to the ease of deformation of the body portion 11 , the strength of the body portion 11 can be increased without impairing the ease of deformation of the body portion 11 .

A pair of left and right center frames 16 are provided at a predetermined interval in the left-right direction. As a result, the air can pass between the central frames 16, so that the mask inner 10 can be prevented from obstructing the breathing and speaking of the user.

- In order to enhance the infection prevention effect, it is preferable that there is as little a gap as possible between the peripheral portion of the mask 50 and the face 60 . Therefore, when the mask inner 10 is used interposed between the mask 50 and the face 60, the gap between the peripheral portion of the main body 11 (that is, the annular frame 12) and the face 60 does not become excessively large. is preferred. Here, an auxiliary frame 17 is provided at the upper end of the central frame 16 . The auxiliary frame 17 has a mountain-shaped curved shape with a central portion protruding forward and downward, and is provided to protrude farther forward than the annular frame 12 and the central frame 16 . The auxiliary frame 17 supports the mask 50 in front of the nostrils 63a. Thereby, a larger space can be secured between the mask 50 and the nostrils 63a without increasing the gap between the annular frame 12 and the face 60 more than necessary. Therefore, it is possible to achieve both the enhancement of the infection prevention effect and the suppression of contact between the mask 50 and the face 60 .

The first contact portion 13 contacts the skin on the front surface of at least one muscle selected from the group consisting of the zygomaticus minor muscle 71 , the levator lip superioris muscle 72 , the zygomaticus major muscle 73 , and the levator lip muscle 74 . The second contact portion 14 contacts the skin on the front surface of at least one muscle selected from the group consisting of the depressor mouth corner 76 , the depressor lower lip 77 , and the chin muscle 78 . Thereby, the mask inner 10 is arranged on the face 60 in a well-balanced state. Therefore, since the inner mask 10 can be prevented from slipping on the face 60, the user can preferably use the inner mask 10 even in situations where impact is likely to be applied, such as during exercise.

A pair of left and right hook portions 15 are provided on the upper frame 21 . The hook portion 15 can lock the main body portion 11 to the mask 50 in an attached state. This can prevent the mask inner 10 from coming off the mask 50 .

- When the user wears the mask 50, if the user opens the mouth 61 too much in the vertical direction, the mask 50 may shift, exposing the nostrils 63a. Here, since the mask inner 10 is provided with the central frame 16 that is hard to deform, it is difficult to stretch in the vertical direction. As a result, the user feels resistance from the mask inner 10 when trying to open the mouth 61 vertically more than a certain amount, so that the user can be careful not to open the mouth 61 too much.

The present invention is not limited to the above embodiments, and may be implemented as follows, for example.

(a) In the above embodiment, a pair of left and right second contact portions 14 are provided, but one may be provided. For example, as shown in FIG. 6, one second contact portion 14 may be configured to contact the skin on the front surface of the mental muscle 78 . In this case, the lower section 31 c of the side frame 31 and the entire section of the lower frame 41 constitute the second contact portion 14 . Further, the intermediate portion of the central frame 16 is curved forward more than in the above-described embodiment. Thereby, even if the lower frame 41 is in contact with the face 60, a space is secured between the central frame 16 and the mouth 61 and the nostrils 63a.

(b) In the above embodiment, the central frames 16 are provided as a pair of left and right, but the number of central frames 16 is not limited. However, it is preferable that the central frame 16 is provided so as to avoid the central portion of the body portion 11 in the left-right direction so as not to interfere with the user's breathing and vocalization.

(c) In the above embodiment, the lower end of the central frame 16 is connected to the lower frame 41, but the present invention is not limited to this. For example, the lower end of the central frame 16 may be connected to the side frames 31, and may be connected to a portion of the peripheral edge of the main body 11 located below the lower end of the lower lip 61b. In other words, when the central frame 16 supports the mask 50, it is sufficient that the space between the mask 50 and the mouth 61 and the nostrils 63a is sufficiently secured.

(d) In the above-described embodiment, the left and right ends of the auxiliary frame 17 are joined to the joints (first joints 18) between the upper ends of the respective central frames 16 and the upper frame 21, but the present invention is not limited to this. . For example, the left and right end portions of the auxiliary frame 17 may be joined to portions other than the first joint portion 18 of each central frame 16 and upper frame 21 , or may be joined to each side frame 31 .

(e) In the above embodiment, the upper frame 21, the side frames 31, the lower frame 41, the central frame 16, and the auxiliary frame 17 have flat cross sections with rounded corners. not. For example, it may have a perfect circular shape, in which case the texture is improved.

(f) In the above embodiment, the hook portion 15 is provided on the upper frame 21, but the present invention is not limited to this. For example, it may be provided on the lower frame 41 .

(g) In the above embodiment, the first contact portion 13 and the second contact portion 14 constitute a part of the annular frame 12, but the present invention is not limited to this. The first contact portion 13 and the second contact portion 14 may be provided as separate members from the body portion 11 . For example, the mask inner 10 may include a stopper as a contact portion, and the stopper may be attached to the annular frame 12 on the side of the face 60 to contact a predetermined position on the face 60 .

(h) In the above embodiment, the entire mask inner 10 is integrally molded of polystyrene resin, but the present invention is not limited to this. Any material may be used as long as it has appropriate elasticity and allows the body portion 11 to be appropriately elastically deformed. For example, polypropylene resin may be used. Moreover, the entire mask inner 10 does not have to be made of the same material, and only a part of the material may be changed. For example, since the central frame 16 contributes less to the deformation of the body portion 11, a harder material than the annular frame 12 may be used. Thereby, the strength of the body portion 11 can be increased without impairing the ease of deformation of the body portion 11 .

DESCRIPTION OF SYMBOLS 10... mask inner, 11... main-body part, 13... 1st contact part, 14... 2nd contact part, 21a... outer section which comprises a 1st contact part, 21b... inner section as a 1st connection part, 26... First connection part 31a... Upper section forming first contact part 31b... Intermediate section as second connection part 31c... Lower section forming second contact part 35... Second connection Part 41a... Outer section forming the second contact section 41b... Inner section as the third connecting section 44... Third connecting section 50... Mask 60... Face 61... Mouth 63a... Nostril 65 …eye.

Claims (7)

A mask inner used by being interposed between the mask and the user's face,
a main body that covers the user's mouth and nostrils and secures a space between the mask and the user's mouth and nostrils;
The main body is
A pair of left and right first contact portions that contact an area of the user's face that is above the upper ends of the nostrils and below the lower ends of the eyes;
a second contact portion that contacts a region of the user's face that is below the lower end of the lower lip and above the lower end of the chin;
a first connecting portion that connects the first contact portions and constitutes a part of the peripheral portion of the main body;
a second connecting portion that connects each of the first contact portions and the second contact portions and constitutes a part of the peripheral portion of the main body;
has
The first connecting portion and the second connecting portion have a curved shape that protrudes forward with respect to the user's face, and are elastically deformed as the first contact portion and the second contact portion are displaced. Possible, mask inner. The second contact portion is provided as a left and right pair,
The body portion has a third connecting portion that connects the pair of left and right second contact portions and constitutes a part of the peripheral edge portion of the body portion,
2. The mask inner according to claim 1, wherein the third connecting portion has a curved shape that protrudes forward with respect to the user's face, and is elastically deformable as the second contact portion is displaced. The main body portion has a fourth connecting portion that connects an intermediate portion of the first connecting portion and a portion of the peripheral edge portion of the main body portion located below the lower end of the user's lower lip,
The mask inner according to claim 1 or 2, wherein the fourth connecting portion has a shape that protrudes forward so that a gap is formed between the fourth connecting portion and the user's face. The mask inner according to claim 3, wherein the fourth connecting portion is configured to be less elastically deformable than the peripheral portion of the main body portion. The mask inner according to claim 3 or 4, wherein a plurality of said fourth connecting portions are provided on said body portion at intervals in the left-right direction. The first contact part contacts the skin on the front surface of at least one muscle selected from the group consisting of the user's zygomaticus minor muscle, levator lip superioris muscle, zygomaticus major muscle, and levator lip muscle,
Claims 1 to 5, wherein the second contact portion contacts the skin on the front surface of at least one muscle selected from the group consisting of the depressor mouth corner muscle, the depressor labial depressor lower lip muscle, and the chin muscle of the user. The mask inner according to any one of the above. The contact portions and the connection portions form an annular frame that is a peripheral portion of the main body portion, and the frame has a flat cross section perpendicular to the extending direction of the frame. 7. The wide flat portion is brought into contact with the user's face at the connecting portion, and the connecting portion is elastically deformed in a direction orthogonal to the wide flat portion. Mask inner as described.

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