mask box

Abstract

This invention provides a mask box that allows for easy handling of masks. The mask box includes: a main body capable of changing its posture to a closed posture and an open posture; a plate-shaped flap portion; and a first hinge axis and a second hinge axis that rotatably connect the flap portion and the main body. The flap portion rotates with the main body from a closed posture to an open posture, using the first hinge axis and the second hinge axis as rotation axes, thereby changing from a folded posture lying on the placement area side to an upright posture standing upright relative to the placement area.

Description

TECHNICAL FIELD

[0001] The present application relates to a mask case. BACKGROUND

[0002] In the past, a mask has been used in order to prevent inhalation of various foreign matters such as viruses or pollen. As such a mask for hygiene / medical use, there are a type formed with a nonwoven fabric as a face fabric or a type formed with a gauze or a woven fabric such as cotton, hemp, or knitwear as a face fabric.

[0003] Currently, due to an increase in awareness related to infectious disease prevention, the number of people who use a mask on a daily basis is increasing. On a daily basis, there are many opportunities to temporarily remove a mask, for example, at the time of eating. At this time, it is not hygienic to store the mask in a pocket or the like and use it again, and therefore a mask case that can temporarily store a mask has been used in the past.

[0004] For example, Patent Document 1 discloses a case that can fold and store a mask. The mask case has a partition plate portion that can be disposed between folded mask pieces and that is subjected to antibacterial treatment.

[0005] [Related Art Documents]

[0006] [Patent Documents]

[0007] Patent Document 1: Japanese Registered Utility Model No. 3191947

[0008] Patent Document 2: Japanese Registered Utility Model No. 3222103 SUMMARY

[0009] [Problems to be Solved by the Invention]

[0010] In the aforementioned mask case, when a user takes out and puts in a mask, the partition plate must be moved by the user's hand, and from the viewpoint of easiness of taking out and putting in the mask, there is room for improvement.

[0011] The present application was achieved in view of the aforementioned circumstances, and aims to provide a mask case that can easily take out and put in a mask.

[0012] [Means of Solving the Problems]

[0013] To solve the problem, the present application adopts the following structure. That is, the present application is a mask case for housing a mask, characterized by comprising: a body portion including a first plate portion and a second plate portion which are plate-shaped, and a body hinge shaft portion rotatably connecting the first plate portion and the second plate portion, and the body portion is rotatable about the body hinge shaft portion as a rotation axis by the first plate portion and the second plate portion, thereby enabling a posture to be changed to a closed posture in which the mask is sandwiched between the first plate portion and the second plate portion, and an open posture in which the first plate portion and the second plate portion are more open than the closed posture and the mask can be taken out and put in; a flap portion which is plate-shaped, provided at at least either of a position of one end portion side of the body portion in an extension direction of the body hinge shaft portion in which the mask is disposed, and a position of the other end portion side of the body portion in the extension direction of the body hinge shaft portion; a first hinge shaft portion rotatably connecting the flap portion and the first plate portion; and a second hinge shaft portion rotatably connecting the flap portion and the second plate portion, the first hinge shaft portion and the second hinge shaft portion extend obliquely in such a manner that, as they move away from the body hinge shaft portion in a direction orthogonal to the extension direction of the body hinge shaft portion, they move away from the disposition region in the extension direction of the body hinge shaft portion, the flap portion rotates about the first hinge shaft portion and the second hinge shaft portion as rotation axes as the body portion changes from the closed posture to the open posture, thereby changing from a laid posture in which the mask is laid on the disposition region side to an upright posture in which the mask is upright with respect to the disposition region.

[0014] Further, the present application can also be a mask case for housing a mask, the mask case characterized by comprising: a body portion including a first plate portion and a second plate portion that are plate-shaped, and a body hinge shaft portion rotatably connecting the first plate portion and the second plate portion, and the body portion being rotatable about the body hinge shaft portion by the first plate portion and the second plate portion, thereby enabling a change in posture to a closed posture in which the mask is sandwiched between the first plate portion and the second plate portion, and an open posture in which the first plate portion and the second plate portion are more open than the closed posture and the mask can be taken out and put in; a flap portion that is plate-shaped, provided at at least one of a position on an end portion side of the body portion in a region in which the mask is disposed, i.e., a disposition region, with respect to an extension direction of the body hinge shaft portion, and a position on the other end portion side of the body portion with respect to the extension direction of the body hinge shaft portion; a first hinge shaft portion rotatably connecting the flap portion and the first plate portion; and a second hinge shaft portion rotatably connecting the flap portion and the second plate portion, the first hinge shaft portion and the second hinge shaft portion extending obliquely in such a manner that, as they move away from the body hinge shaft portion in a direction orthogonal to the extension direction of the body hinge shaft portion, they move away from the disposition region in the extension direction of the body hinge shaft portion, the flap portion being rotatable about the first hinge shaft portion and the second hinge shaft portion as the body portion changes from the open posture to the closed posture, thereby changing from an upright posture in which the flap portion stands with respect to the disposition region, to a fallen posture in which the flap portion falls toward the disposition region.

[0015] That is, the present application employs a so-called V-fold structure for the flap portion. Thus, the flap portion is rotatable about the first hinge shaft portion and the second hinge shaft portion as the body portion changes in posture due to opening and closing, so as to change to the fallen posture when the body portion is in the closed posture and to the upright posture when the body portion is in the open posture. According to this kind of present application, the user need not touch the flap portion, and can take the mask out of or put the mask into the mask case simply by performing a rotation operation for opening and closing the body portion. Thus, the number of operations for taking the mask out of or putting the mask into the mask case by the user is reduced, and the mask can be easily taken out or put in.

[0016] Further, in the present application, the body portion can be capable of becoming a self-standing posture in which it can stand in a state in which the end portion of the body portion is in contact with a surface, between the closed posture and the open posture, and the flap portion can be provided at a position on the end portion side of the body portion.

[0017] Further, in the present application, a locking portion that can lock a strap of the mask can be formed in the flap portion.

[0018] Moreover, in the present application, the body portion can be able to become a self-standing posture in which it can stand by itself in a state in which the one end portion of the body portion is grounded, the flap portion can be provided at a position on the other end portion side of the body portion, the flap portion provided at the position on the other end portion side of the body portion can be able to change the posture to a reversed posture in which it is reversed to the opposite side of the body portion with the first hinge shaft portion and the second hinge shaft portion sandwiched therebetween when the body portion is in the self-standing posture, and the locking portion can be formed in the flap portion provided at the position on the other end portion side of the body portion.

[0019] Moreover, in the present application, the body portion can be formed of a polypropylene resin.

[0020] Moreover, in the present application, the flap portion can be provided at both the position on the one end portion side of the body portion and the position on the other end portion side of the body portion.

[0021] Moreover, in the present application, the flap portion provided on the one end portion side of the body portion and the flap portion provided on the other end portion side of the body portion can be formed in a manner in which they overlap in the laid posture, and can be configured such that the inclination angle of the flap portion on the lower side with respect to the first hinge shaft portion and the second hinge shaft portion of the body portion with respect to a direction orthogonal to the body hinge shaft portion when they are overlapped is smaller than the inclination angle of the flap portion on the upper side with respect to the first hinge shaft portion and the second hinge shaft portion of the body portion with respect to a direction orthogonal to the body hinge shaft portion when they are overlapped.

[0022] [Effects of the Invention]

[0023] According to the present application, it is possible to provide a mask case in which a mask can be easily taken out and put in. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a perspective view of the mask case of Embodiment 1.

[0025] Figure 2 is an expanded view of the mask case of Embodiment 1.

[0026] Figure 3 is a plan view of the mask case of Embodiment 1 in which the body portion is in the closed posture.

[0027] Figure 4 is a bottom view of the mask case of Embodiment 1 in which the body portion is in the closed posture.

[0028] Figs. 5(a) and 5(b) are cross-sectional views schematically showing the state of the mask case and the mask in which the body portion is in the closed posture in Embodiment 1, Fig. 5(a) is a view corresponding to the view of Fig. 4(a), and Fig. 5(b) is a view corresponding to the view of Fig. 4(b). Figure 3Fig. 5(a) is a sectional view taken along the A-A section of Fig. 5(b) is a sectional view taken along the B-B section of Fig. Figure 3 .

[0029] Figure 6 Fig. 1 is a plan view of the mask case when the body portion is in the open posture in Embodiment 1.

[0030] Figure 7 Fig. 1 is a plan view of the mask case when the body portion is in the open posture in Embodiment 1.

[0031] Fig. 8(a) and Fig. 8(b) are sectional views schematically showing the state of the mask case and the mask when the body portion is in the open posture in Embodiment 1, Fig. 8(a) is a sectional view taken along the C-C section of Fig. Figure 6 . Figure 6 Fig. 8(b) is a sectional view taken along the D-D section of Fig.

[0032] Figure 9 Fig. 7 is a perspective view showing the mask case when the body portion is in the self-standing posture in Embodiment 1.

[0033] Figure 10 Fig. 10 is a perspective view of the mask case in Embodiment 2.

[0034] Figure 11 Fig. 11 is an expanded view of the mask case in Embodiment 2.

[0035] Figure 12 Fig. 13 is a perspective view showing the mask case when the body portion is in the self-standing posture in Embodiment 2.

[0036] Figure 13 Fig. 16 is a perspective view of the mask case in Embodiment 3.

[0037] Figure 14 Fig. 17 is an expanded view of the mask case in Embodiment 3.

[0038] Figure 15 Fig. 15 is a plan view of the mask case when the body portion is in the closed posture in Embodiment 3.

[0039] Figure 16 Fig. 18 is a sectional view schematically showing the state of the mask case and the mask when the body portion is in the open posture in Embodiment 3, which is a sectional view taken along the E-E section of Fig. Figure 15 .

[0040] Figure 17 Fig. 13 is a perspective view showing the mask case when the body portion is in the self-standing posture in Embodiment 2.

[0041] [Explanation of Symbols]

[0042] 1: Body portion

[0043] 2: flap portion

[0044] 2A: upper flap portion

[0045] 2B: lower flap portion

[0046] 11: first plate portion

[0047] 12: second plate portion

[0048] 13: body hinge shaft portion

[0049] 21: first cover portion

[0050] 22: second cover portion

[0051] 23: cover hinge shaft portion

[0052] 24, 224, 324: locking portion

[0053] 25: first fold portion

[0054] 26: second fold portion

[0055] 31: first hinge shaft portion

[0056] 31A: upper first hinge shaft portion

[0057] 31B: lower first hinge shaft portion

[0058] 32: second hinge shaft portion

[0059] 32A: upper second hinge shaft portion

[0060] 32B: lower second hinge shaft portion

[0061] 41: first clasp

[0062] 42: second clasp

[0063] 100, 200, 300: mask case

[0064] A1: arrangement region

[0065] B1: first sheet member

[0066] B2: second sheet member

[0067] E1A: upper end portion

[0068] E1B: lower end portion

[0069] E11A: first upper end edge

[0070] E11B: first lower end edge

[0071] E11C: first side end edge

[0072] E12A: second upper end edge

[0073] E12B: second lower end edge

[0074] E12C: second side end edge

[0075] M1, M2: mask

[0076] M1a, M2a: string

[0077] S111: first inner side surface

[0078] S112: first outer side surface

[0079] S121: second inner side surface

[0080] S122: second outer side surface

[0081] θ1A, θ1B, θ2A, θ2B: inclination angle DETAILED DESCRIPTION

[0082] Hereinafter, an embodiment of a mask case of the present application will be described with reference to the drawings. In addition, the following embodiment is an example. In this specification, unless specifically mentioned, the up and down seen in Figure 2 will be set as the "height direction (up and down direction)" of the mask case, and the left and right seen in Figure 4 will be set as the "width direction (left and right direction)" of the mask case, and the up and down seen in will be set as the "thickness direction" of the mask case. In addition, the mask accommodated in the mask case of the present application is not particularly limited. The mask case can be applied to various masks such as a nonwoven fabric mask formed of a nonwoven fabric as a material, or a cloth mask formed of a cloth such as gauze, cotton, hemp, or knitwear as a material.

[0083] <Embodiment 1>

[0084] Figure 1 is a perspective view of a mask case 100 (hereinafter referred to as case 100) of Embodiment 1. Figure 1 In the drawing, a state in which the body portion shown by symbol 1 is in a posture between the closed posture and the open posture described later is shown. Figure 1 Symbol M1 of Figure 2 is an expanded view of the case 100. The case 100 is configured as a case for accommodating a mask M1 worn by a user. In addition, the case 100 is not limited to a cloth mask, and can be used for the accommodation of a nonwoven fabric mask.

[0085] [Overall Structure]

[0086] As Figure 1 and Figure 2As shown, the case 100 is formed by fusion bonding the first sheet member B1 and the second sheet member B2 overlapped on the first sheet member B1. The first sheet member B1 and the second sheet member B2 are each a flexible resin sheet formed of a polypropylene resin. The first sheet member B1 is a member that imparts a prescribed rigidity as a structure to the case 100, and is formed thicker than the second sheet member B2. The second sheet member B2 is a member that contacts the mask in the case 100, and is subjected to antibacterial treatment. Note that the material of the mask case of the present application is not limited to this.

[0087] As shown in Figs. 5(a) and 5(b), the case 100 has a body portion 1, a pair of flap portions 2, 2, a pair of first hinge shaft portions 31, 31, a pair of second hinge shaft portions 32, 32, a first clasp 41, and a second clasp 42. Figure 1 Figure 2 As shown in Figs. 5(a) and 5(b), the case 100 has a body portion 1, a pair of flap portions 2, 2, a pair of first hinge shaft portions 31, 31, a pair of second hinge shaft portions 32, 32, a first clasp 41, and a second clasp 42.

[0088] Figure 3 Fig. 5(a) is a plan view of the case 100 when the body portion 1 is in the closed attitude, Figure 4 Fig. 5(b) is a bottom view of the case 100 when the body portion 1 is in the closed attitude. Moreover, Figs. 5(a) and 5(b) are cross-sectional views schematically showing the state of the case 100 and the mask M1 when the body portion 1 is in the closed attitude, Fig. 5(a) is a cross-sectional view corresponding to the A-A cross section of Figure 3 Fig. 5(b) is a cross-sectional view corresponding to the B-B cross section of Figure 3 In Figs. 5(a) and 5(b), the mask M1 and the like are shown in simplified form for convenience. Moreover, Figure 6 Fig. 8(a) is a plan view of the case 100 when the body portion 1 is in the open attitude, Figure 7 Fig. 8(b) is a bottom view of the case 100 when the body portion 1 is in the open attitude. Moreover, Figs. 8(a) and 8(b) are cross-sectional views schematically showing the state of the case 100 and the mask M1 when the body portion 1 is in the open attitude, Fig. 8(a) is a cross-sectional view corresponding to the C-C cross section of Figure 6 Fig. 8(b) is a cross-sectional view corresponding to the D-D cross section of Figure 6 In Figs. 8(a) and 8(b), the mask M1 and the like are shown in simplified form for convenience. The following describes the structures of the case 100.

[0089] [Body portion 1]

[0090] As shown in Fig. 5(a), the body portion 1 is a plate member that sandwiches the mask M1 by being folded with the mask M1. As shown in Figure 2 ​As shown, the main body 1 is roughly rectangular in shape when viewed from above. A hinge axis 13 extending vertically is formed at the center of the main body 1 in the left-right direction, covering the entire vertical area of ​​the main body 1. When the box 100 is unfolded, the main body 1 has a left-right symmetrical shape about the hinge axis 13 as the axis of symmetry. Here, the portions divided by the hinge axis 13... Figure 2 The left side is designated as the first plate portion 11, and the right side is designated as the second plate portion 12. Both the first plate portion 11 and the second plate portion 12 are formed into plates that have a roughly trapezoidal shape when viewed from above, with the upper edges of the trapezoids connected to each other via a body hinge axis 13. The first plate portion 11 and the second plate portion 12 can rotate freely relative to each other about the body hinge axis 13. Here, as... Figure 2 As shown, the upper edge of the first plate portion 11 is designated as the first upper edge E11A, and the lower edge is designated as the first lower edge E11B. Similarly, the upper edge of the second plate portion 12 is designated as the second upper edge E12A, and the lower edge is designated as the second lower edge E12B. The first upper edge E11A and the second upper edge E12A form the upper end portion E1A of the body portion 1, and the first lower edge E11B and the second lower edge E12B form the lower end portion E1B of the body portion 1. In this example, the upper end portion E1A corresponds to the "other end portion" of the present invention, and the lower end portion E1B corresponds to the "one end portion" of the present invention. Furthermore, the left end edge of the first plate portion 11, that is, the side edge opposite to the end edge connected to the body hinge shaft portion 13, is designated as the first side edge E11C. Similarly, the right end edge of the second plate portion 12 (the side end edge that is opposite to the end edge connected to the main body hinge shaft portion 13) is designated as the second side end edge E12C.

[0091] The main body 1, configured as described above, rotates about the main body hinge axis 13 via the first plate 11 and the second plate 12, thereby enabling the first plate 11 and the second plate 12 to separate / contact, thus achieving their opening and closing actions. In other words, the main body 1 can freely switch its posture. Figures 3 to 5(b) The closed posture shown is achieved by folding the first plate portion 11 and the second plate portion 12 together. Figures 6 to 8(b)The first plate portion 11 and the second plate portion 12 are shown in an open posture to the extent that the mask Ml can be taken in and out. As shown in Fig. 5(a) and the like, the body portion 1 becomes a closed posture, so that the mask Ml can be sandwiched between the first plate portion 11 and the second plate portion 12. Thus, the mask Ml is housed in the case 100. Here, as shown in Fig. 5(a), the face of the first plate portion 11 that faces the second plate portion 12 when the body portion 1 is in the closed posture, that is, the face that contacts the mask Ml is set as a first inner side face Slll, and the face on the opposite side thereof (that is, the outer face) is set as a first outer side face S112. Similarly, the face of the second plate portion 12 that faces the first plate portion 11 when the body portion 1 is in the closed posture is set as a second inner side face S121, and the face on the opposite side thereof is set as a second outer side face S122. As shown in Fig. 5(a) and the like, the first inner side face Slll and the second inner side face S121 are formed of the second sheet member B2 having antibacterial properties. Also, as shown in Fig. 5(a) and the like, the first outer side face S112 and the second outer side face S122 are formed of the first sheet member B l having antibacterial properties. Figure 2 As shown in Fig. 5(a) and the like, the first inner side face Slll and the second inner side face S121 are formed of the second sheet member B2 having antibacterial properties. Also, Figure 2 As shown in Fig. 5(a) and the like, the first inner side face Slll and the second inner side face S121 are formed of the second sheet member B2 having antibacterial properties. Also, Figure 6 The symbol Al shown in Fig. 5(a) and the like indicates a region in the body portion 1 in which the mask Ml is disposed. In this example, substantially the entire region of the first inner side face Slll and the second inner side face S121 becomes the disposition region Al. However, the present application is not limited thereto.

[0092] By the relative rotation of the first plate portion 11 and the second plate portion 12, the body portion 1 becomes the open posture from the closed posture, so that the state in which the mask Ml is sandwiched by the first plate portion 11 and the second plate portion 12 is released, and thus, as shown in Fig. 5(b) and the like, the mask Ml disposed in the disposition region Al can be taken out of the case 100. Figure 6 As shown in Fig. 5(a) and the like, the first inner side face Slll and the second inner side face S121 are formed of the second sheet member B2 having antibacterial properties. Also, Figure 7 As shown in Fig. 5(a) and the like, the first inner side face Slll and the second inner side face S121 are formed of the second sheet member B2 having antibacterial properties. Also,

[0093] [Flap portions 2]

[0094] The pair of flap portions 2, 2 are plate-like members connected to the body portion 1. The flap portion 2 is configured to change posture in conjunction with the change in posture of the body portion 1 due to the opening and closing, and becomes a lying posture that lies on the disposition region Al side when the body portion 1 is in the closed posture, as shown in Fig. 5(b), and becomes a standing posture that stands with respect to the disposition region Al when the body portion 1 is in the open posture, as shown in Fig. 8(b).

[0095] As shown in Fig. 5(a) and the like, the first inner side face Slll and the second inner side face S121 are formed of the second sheet member B2 having antibacterial properties. Also, Figure 2As shown, one of the pair of flaps 2, 2 is located in the main body 1 at the upper end E1A side (i.e., the upper side) of the arrangement area A1, and the other is located at the lower end E1B side (i.e., the lower side) of the arrangement area A1. That is, the pair of flaps 2, 2 are arranged vertically, sandwiching the arrangement area A1. Hereinafter, when describing the pair of flaps 2, 2 separately, the upper flap 2 will be referred to as the upper flap 2A, and the lower flap 2 will be referred to as the lower flap 2B. When not describing them separately, they will be simply referred to as flap 2.

[0096] like Figure 2 As shown, the flap portion 2 is formed from a portion of the second sheet member B2 and has antibacterial properties. The flap portion 2 is connected to the main body portion 1 by crossing the main body hinge axis portion 13. The flap portion 2 includes: a first cover portion 21 connected to the first plate portion 11, a second cover portion 22 connected to the second plate portion 12, and a cover hinge axis portion 23 that rotatably connects the first cover portion 21 and the second cover portion 22. The first cover portion 21 and the second cover portion 22 are configured to be left-right symmetrical about the main body hinge axis portion 13 (and the cover hinge axis portion 23) as an axis of symmetry when the box 100 is unfolded. The cover hinge axis portion 23 is formed at the central position in the left-right direction of the flap portion 2 and extends coaxially with the main body hinge axis portion 13 when the box 100 is unfolded.

[0097] A pair of locking portions 24, 24 are formed on the upper flap portion 2A on the upper end E1A side of the body portion 1. One of the locking portions 24, 24 is formed on the first cover portion 21, and the other is formed on the second cover portion 22. They are symmetrical about each other about the body hinge axis portion 13 (and the cover hinge axis portion 23). The locking portion 24 is a slit formed at the front end of the upper flap portion 2A, which can accommodate the strap M1a of the mask M1. The strap M1a of the mask M1 is accommodated by the locking portion 24, thereby locking the strap M1a (see reference). Figure 9 ).

[0098] [First hinge axis 31 / Second hinge axis 32]

[0099] like Figure 2As shown, one of the pair of first hinge shafts 31, 31 rotatably connects the first cover portion 21 of the upper flap portion 2A to the first plate portion 11 of the body portion 1, and the other rotatably connects the first cover portion 21 of the lower flap portion 2B to the first plate portion 11 of the body portion 1. Hereinafter, when explaining the pair of first hinge shafts 31, 31 separately, the hinge shaft connecting the upper flap portion 2A and the first plate portion 11 will be referred to as the upper first hinge shaft 31A, and the hinge shaft connecting the lower flap portion 2B and the first plate portion 11 will be referred to as the lower first hinge shaft 31B. Unless otherwise specified, they will be simply referred to as the first hinge shaft 31. Furthermore, as... Figure 2 As shown, one of the pair of second hinge shafts 32, 32 rotatably connects the second cover portion 22 of the upper flap portion 2A to the second plate portion 12 of the body portion 1, and the other rotatably connects the second cover portion 22 of the lower flap portion 2B to the second plate portion 12 of the body portion 1. Hereinafter, when describing the pair of second hinge shafts 32, 32 separately, the hinge shaft connecting the upper flap portion 2A and the second plate portion 12 will be referred to as the upper second hinge shaft 32A, and the hinge shaft connecting the lower flap portion 2B and the second plate portion 12 will be referred to as the lower second hinge shaft 32B. When not describing them separately, they will be simply referred to as the second hinge shaft 32.

[0100] like Figure 2 As shown, the upper first hinge axis portion 31A and the upper second hinge axis portion 32A are formed at a position higher than the configuration area A1. More specifically, the upper first hinge axis portion 31A extends along the first upper edge E11A of the first plate portion 11, and the upper second hinge axis portion 32A extends along the second upper edge E12A of the second plate portion 12. The upper first hinge axis portion 31A and the upper second hinge axis portion 32A are formed to be left-right symmetrical about the main body hinge axis portion 13 when the box 100 is in the unfolded state. Here, the upper first hinge axis portion 31A is inclined upward as it moves to the left, and the upper second hinge axis portion 32A is inclined upward as it moves to the right. That is, the upper first hinge shaft portion 31A and the upper second hinge shaft portion 32A extend obliquely in such a way that they move away from the main hinge shaft portion 13 in a direction orthogonal to the extension direction of the main hinge shaft portion 13, and away from the arrangement area A1 in the extension direction of the main hinge shaft portion 13. Therefore, the upper first hinge shaft portion 31A and the upper second hinge shaft portion 32A form an approximate V-shape. As a result, the upper fold portion 2A has a so-called V-fold structure.

[0101] Moreover, such as Figure 2As shown, the lower first hinge shaft portion 31B and the lower second hinge shaft portion 32B are formed at positions lower than the arrangement region Al. More specifically, the lower first hinge shaft portion 31B extends along the first lower end edge El IB of the first plate portion 11, and the lower second hinge shaft portion 32B extends along the second lower end edge E12B of the second plate portion 12. The lower first hinge shaft portion 31B and the lower second hinge shaft portion 32B are formed so as to be left-right symmetrical with the body hinge shaft portion 13 as an axis of symmetry in a state in which the case 100 is unfolded. Here, the lower first hinge shaft portion 31B is inclined so as to be directed downward as it is directed to the left, and the lower second hinge shaft portion 32B is inclined so as to be directed downward as it is directed to the right. That is, the lower first hinge shaft portion 31B and the lower second hinge shaft portion 32B are inclined and extended in the same manner as the upper first hinge shaft portion 31A and the upper second hinge shaft portion 32A, that is, so as to be directed away from the arrangement region Al in the extending direction of the body hinge shaft portion 13 as it is directed away from the body hinge shaft portion 13 in a direction orthogonal to the extending direction of the body hinge shaft portion 13. Thus, a substantially inverse V-shape is formed by the lower first hinge shaft portion 31B and the lower second hinge shaft portion 32B. As a result, the lower flap portion 2B is in a so-called V-fold structure in the same manner as the upper flap portion 2A.

[0102] Here, the inclination angle of the upper first hinge shaft portion 31A with respect to a direction orthogonal to the body hinge shaft portion 13 (left-right direction) is set as θ1A, the inclination angle of the upper second hinge shaft portion 32A with respect to the left-right direction is set as θ2A, the inclination angle of the lower first hinge shaft portion 31B with respect to the left-right direction is set as θ1B, and the inclination angle of the lower second hinge shaft portion 32B with respect to the left-right direction is set as θ2B. In the present example, θ1A, θ2A, θ1B, and θ2B are equal to each other. Also, by this, the angle of the position at which the imaginary line along the body hinge shaft portion 13 meets the imaginary line along the upper first hinge shaft portion 31A is greater than 90°, and although not shown, the angle of the position at which the imaginary line along the body hinge shaft portion 13 meets the imaginary line along the upper second hinge shaft portion 32A, the angle of the position at which the imaginary line along the body hinge shaft portion 13 meets the imaginary line along the lower first hinge shaft portion 31B, and the angle of the position at which the imaginary line along the body hinge shaft portion 13 meets the imaginary line along the lower second hinge shaft portion 32B are also the same.

[0103] [First clasp 41 / second clasp 42]

[0104] The first clasp 41 and the second clasp 42 are members as described below, that is, as shown in FIG. 6, the first clasp 41 is formed on the first plate portion 11, and the second clasp 42 is formed on the second plate portion 12. Figure 4As shown, when the main body 1 is in a closed position, they engage with each other, thereby restricting the relative rotation of the first plate 11 and the second plate 12 and maintaining the closed position of the main body 1. The first latch 41 and the second latch 42 are provided in symmetrical positions about the main body hinge axis 13. The first latch 41 is located near the first side edge E11C of the first plate 11, and the second latch 42 is located near the second side edge E12C of the second plate 12. In this example, the first latch 41 and the second latch 42 are formed as snap buttons that can engage with each other. However, the first latch 41 and the second latch 42 are not limited to snap buttons and can adopt various structures.

[0105] [Opening and closing actions]

[0106] The following description explains the opening and closing operation for taking out and putting in the mask M1 from the box 100. First, it explains how to remove the mask M1 from the box 100 by opening the main body 1 of the box 100 from... Figures 3 to 5(b) The closed posture shown is set as Figures 6 to 8(b) The action shown is the opening posture.

[0107] As shown in Figure 5(a), when the main body 1 is in a closed position, the mask M1 is folded and sandwiched between the first plate 11 and the second plate 12. The main body 1 is folded in half with the main body hinge axis 13 as the boundary, thereby making the size of the box 100 for storing the mask M1 more compact. Moreover, as shown in Figure 5(a), when the main body 1 is in a closed position, the flap 2 is folded in half with the first cover 21 and the second cover 22 facing each other. Moreover, as shown in Figure 5(b), the flap 2 is in a folded position on the side of the placement area A1. More specifically, the first cover 21 of the upper flap 2A and the first cover 21 of the lower flap 2B overlap the first plate 11, and the second cover 22 of the upper flap 2A and the second cover 22 of the lower flap 2B overlap the second plate 12. With the folding portion 2 positioned in a folded-down position, the mask M1, positioned in the placement area A1, is held between the body portion 1 and the folding portion 2, preventing the mask M1 from falling out of the box 100. Furthermore, the first inner surface S111 of the first plate portion 11, the second inner surface S121 of the second plate portion 12, and the folding portion 2, as described above, are antibacterial, thus keeping the mask M1 clean. As described above, the body portion 1 is in a closed position, allowing for better storage of the mask M1 within the box 100. Moreover, the relative rotation of the first plate portion 11 and the second plate portion 12 is restricted by the engagement of the first buckle 41 and the second buckle 42, maintaining the closed position of the body portion 1. This prevents the body portion 1 from accidentally opening and causing the mask M1 to fall out.

[0108] To set the body portion 1 in the closed posture to the open posture, first, the engagement of the first catch 41 and the second catch 42 is released. In this state, the first plate portion 11 and the second plate portion 12 are relatively rotated about the body hinge shaft portion 13 in the direction in which the angle formed by the first plate portion 11 and the second plate portion 12 widens, whereby the body portion 1 becomes the open posture as shown in FIG. 2. Figures 6 to 8(b)

[0109] Here, as described above, the flap portion 2 is connected to the first plate portion 11 via the first cover hinge shaft portion 31 at the first cover portion 21 and is connected to the second plate portion 12 via the second cover hinge shaft portion 32 at the second cover portion 22. Therefore, by relatively rotating them in the direction in which the first plate portion 11 and the second plate portion 12 open, the first cover portion 21 is pulled by the first plate portion 11 and the second cover portion 22 is pulled by the second plate portion 12. Thus, the first cover portion 21 and the second cover portion 22 are relatively rotated about the cover hinge shaft portion 23 so that the flap portion 2 changes from the folded state to the open state as shown in FIG. 2. Moreover, as described above, the first cover hinge shaft portion 31 and the second cover hinge shaft portion 32 form a substantially V shape, whereby the flap portion 2 has a V-fold structure. Therefore, by relatively rotating the first plate portion 11 and the second plate portion 12 in the direction in which the body portion 1 opens, tension acts in the direction in which the flap portion 2 is to be erected. Thus, as shown in FIG. 2, the flap portion 2 rotates in the direction in which it stands up with respect to the arrangement region Al about the first cover hinge shaft portion 31 and the second cover hinge shaft portion 32 as the first plate portion 11 and the second plate portion 12 relatively rotate. As a result, as shown in FIG. 2, the flap portion 2 becomes the standing posture when the body portion 1 is in the open posture. That is, the user need not touch the flap portion 2 but only needs to perform the rotating operation for setting the body portion 1 from the closed posture to the open posture, and the flap portion 2 becomes the standing posture in conjunction with the opening operation of the body portion 1. Figure 1 Figure 1 Figures 6 to 8(b)

[0110] As shown in FIG. 2, by the body portion 1 becoming the open posture, the state in which the mask Ml is sandwiched by the first plate portion 11 and the second plate portion 12 is released. At this time, since the flap portion 2 becomes the standing posture, the state in which the mask Ml is held between the body portion 1 and the flap portion 2 is also released. Thus, the user can touch the mask Ml arranged in the arrangement region Al without touching the flap portion 2. As described above, the user can easily take the mask Ml out of the case 100 by performing the rotating operation for setting the body portion 1 from the closed posture to the open posture without touching the flap portion 2. Figures 5(a) to 8(b) To store the mask Ml in the case 100, only the first plate portion 11 and the second plate portion 12 are relatively rotated about the body hinge shaft portion 13 in the direction in which the angle formed by the first plate portion 11 and the second plate portion 12 narrows, whereby the body portion 1 becomes the closed posture as shown in FIG. 1.

[0111] Figure 6 ​​​​​As shown, the mask Ml is arranged in a state where the first plate portion 11 and the second plate portion 12 of the body portion 1 in the open posture are folded, and the first plate portion 11 and the second plate portion 12 are relatively rotated about the body hinge shaft portion 13 to set the body portion 1 in the closed posture. The flap portion 2 is rotated about the first hinge shaft portion 31 and the second hinge shaft portion 32 in a direction of being laid down on the arrangement region Al side, in conjunction with the relative rotation of the first plate portion 11 and the second plate portion 12. Thus, the user need only perform a rotation operation for setting the body portion 1 from the open posture to the closed posture without contacting the flap portion 2, and the flap portion 2 is brought into the laid-down posture in conjunction with the closing operation of the body portion 1. As a result, as shown, the mask Ml is housed in the case 100 in a state where the first plate portion 11 and the second plate portion 12 of the body portion 1 in the closed posture are folded. As described above, the user need only perform a rotation operation for setting the body portion 1 from the open posture to the closed posture without contacting the flap portion 2, and can easily house the mask Ml in the case 100. Figures 3 to 5(b) As shown, the mask Ml is arranged in a state where the first plate portion 11 and the second plate portion 12 of the body portion 1 in the open posture are folded, and the first plate portion 11 and the second plate portion 12 are relatively rotated about the body hinge shaft portion 13 to set the body portion 1 in the closed posture. The flap portion 2 is rotated about the first hinge shaft portion 31 and the second hinge shaft portion 32 in a direction of being laid down on the arrangement region Al side, in conjunction with the relative rotation of the first plate portion 11 and the second plate portion 12. Thus, the user need only perform a rotation operation for setting the body portion 1 from the open posture to the closed posture without contacting the flap portion 2, and the flap portion 2 is brought into the laid-down posture in conjunction with the closing operation of the body portion 1. As a result, as shown, the mask Ml is housed in the case 100 in a state where the first plate portion 11 and the second plate portion 12 of the body portion 1 in the closed posture are folded. As described above, the user need only perform a rotation operation for setting the body portion 1 from the open posture to the closed posture without contacting the flap portion 2, and can easily house the mask Ml in the case 100.

[0112] [Self-standing function]

[0113] Further, the case 100 has a self-standing function. Figure 9 is a perspective view of the case 100 when the body portion 1 is in a self-standing posture. As described above, the body portion 1 of the present example is formed of a polypropylene resin, and thus has a prescribed rigidity. Therefore, as shown, the body portion 1 can be brought into a self-standing posture in which the body portion 1 can be grounded at the following end portion EIB. The first plate portion 11 and the second plate portion 12 in the self-standing posture have a larger opening degree than in the closed posture and a smaller opening degree than in the open posture. That is, the body portion 1 can be brought into the self-standing posture between the closed posture and the open posture. Figure 9

[0114] Further, as shown, the upper flap portion 2A provided at a position on the upper end portion EIA side of the body portion 1 can be brought into a reversed posture in which the posture is reversed to the opposite side (i.e., the upper side) of the body portion 1 with the first hinge shaft portion 31 and the second hinge shaft portion 32 sandwiched therebetween, when the body portion 1 is in the self-standing posture. By catching the cord Mla of the mask Ml in the pair of catching portions 24, 24 formed in the upper flap portion 2A in the reversed posture, the mask Ml can be hung from the upper flap portion 2A. Thus, the mask Ml can be held without being housed in the case 100. Figure 9

[0115] [Effects / Effects]

[0116] ​​As described above, in the case of the case 100 of Embodiment 1, the body portion 1 is capable of changing the posture to a closed posture in which the mask M1 is sandwiched between the first plate portion 11 and the second plate portion 12, and an open posture in which the first plate portion 11 and the second plate portion 12 are opened to enable the mask M1 to be taken in and out. Also, the first hinge shaft portion 31 and the second hinge shaft portion 32 that rotatably connect the flap portion 2 and the body portion 1 are inclined to extend in such a manner that, as they move away from the body hinge shaft portion 13 in a direction orthogonal to the extending direction of the body hinge shaft portion 13, they move away from the arrangement region Al in the extending direction of the body hinge shaft portion 13. That is, the flap portion 2 is in a V-folded structure. According to this, as the body portion 1 changes from the closed posture to the open posture, the flap portion 2 rotates about the first hinge shaft portion 31 and the second hinge shaft portion 32, thereby changing from a laid posture in which the flap portion 2 is laid on the side of the arrangement region Al to an upright posture in which the flap portion 2 stands with respect to the arrangement region Al, and as the body portion 1 changes from the open posture to the closed posture, the flap portion 2 rotates about the first hinge shaft portion 31 and the second hinge shaft portion 32, thereby changing from the upright posture to the laid posture. That is, the flap portion 2 rotates about the first hinge shaft portion 31 and the second hinge shaft portion 32 in conjunction with the change in posture of the body portion 1 due to the opening and closing of the body portion 1, so that when the body portion 1 is in the closed posture, the flap portion 2 becomes the laid posture in which the flap portion 2 is laid on the side of the arrangement region Al in such a manner as to sandwich the mask M1 between the body portion 1 and the flap portion 2, and when the body portion 1 is in the open posture, the flap portion 2 becomes the upright posture in which the flap portion 2 stands with respect to the arrangement region Al.

[0117] According to such a case 100, in the closed posture in which the mask M1 is sandwiched, the body portion 1 is in a folded state with the body hinge shaft portion 13 as a boundary, and thus the size of the case 100 when the mask M1 is accommodated can be reduced. Thus, the user can take the case 100 in a pocket or the like and take it away, and even when the case 100 is put in a bag or the like, the case 100 does not occupy a large volume. That is, the portability of the case can be improved. Also, when the body portion 1 is in the closed posture, the flap portion 2 is in the laid posture in such a manner as to sandwich the mask M1 between the body portion 1 and the flap portion 2, and thus the mask M1 can be prevented from falling out of the case 100. Furthermore, the flap portion 2 is configured to change the posture in conjunction with the change in posture of the body portion 1 due to the opening and closing of the body portion 1, so that when the body portion 1 is in the closed posture, the flap portion 2 becomes the laid posture, and when the body portion 1 is in the open posture, the flap portion 2 becomes the upright posture, and thus the user can take the mask M1 in and out of the case 100 by performing a rotation operation for opening and closing the body portion 1 without having to touch the flap portion 2. Thus, the number of operations for the user to take the mask M1 in and out of the case 100 can be reduced, and thus the mask M1 can be easily taken in and out. Also, the frequency of the user touching the flap portion 2 is reduced, and thus the risk of viruses or germs and the like adhering to the flap portion 2 can be reduced.

[0118] In addition, in the embodiment, the body portion 1 is configured to be changed from the closed posture to the open posture, and the flap portion 2 is configured to be changed from the lying posture to the standing posture in conjunction with the change of the body portion 1 from the open posture to the closed posture, and the flap portion 2 is configured to be changed from the standing posture to the lying posture in conjunction with the change of the body portion 1 from the closed posture to the open posture, but the present application is not limited thereto. The present application can be configured to be capable of at least one of the following: the flap portion is changed from the lying posture to the standing posture in conjunction with the change of the body portion from the closed posture to the open posture; and the flap portion is changed from the standing posture to the lying posture in conjunction with the change of the body portion from the open posture to the closed posture.

[0119] Furthermore, the case 100 of the embodiment 1 includes an upper flap portion 2A provided on the upper side of the arrangement region Al, and a lower flap portion 2B provided on the lower side of the arrangement region Al. Thus, when the body portion 1 is in the closed posture, the mask Ml is prevented from falling off from the upper side of the body portion 1 by the upper flap portion 2A, and the mask Ml is prevented from falling off from the lower side by the lower flap portion 2B. That is, the falling off of the mask Ml housed in the case 100 can be more reliably prevented. However, the present application is not limited thereto. The flap portion of the present application can be provided at at least one of a position on the body portion side of the arrangement region on the one end portion side of the body portion and a position on the body portion side of the arrangement region on the other end portion side of the body portion in the extension direction of the body hinge shaft portion.

[0120] Furthermore, in the case 100 of the embodiment 1, the body portion 1 can be brought to a self-standing posture in which the body portion 1 can be self-standing in a state in which the end portion EIB can be grounded, between the closed posture and the open posture. Furthermore, the upper flap portion 2A provided at a position on the upper end portion EIA side of the body portion 1 can be changed in posture to a reversed posture in which the upper flap portion 2A is reversed to the opposite side of the body portion 1 with the first hinge shaft portion 31 and the second hinge shaft portion 32 interposed therebetween, when the body portion 1 is in the self-standing posture. In the upper flap portion 2A, a locking portion 24 in which the cord Mla of the mask Ml can be locked is formed.

[0121] Accordingly, by locking the cord Mla of the mask Ml to the pair of locking portions 24, 24 of the upper flap portion 2A in the reversed posture, the mask Ml can be hung on the upper flap portion 2A. Thus, the mask Ml can be held without being housed in the case 100. That is, the case 100 can be used as a stand for temporarily placing the mask Ml when the mask Ml is temporarily removed. For example, when going out to eat, the mask Ml can be held in the case 100 self-standing on a table without intentionally housing the mask Ml in the case 100. At this time, the mask Ml can be held without contacting an object other than the case 100, and thus the risk of the mask Ml being contaminated can be reduced. Furthermore, the mask Ml can be held without being housed in the inside of the case 100, and thus the mask Ml can be dried and preferably held clean. According to such an advantage, a washed mask Ml can also be held in the self-standing case 100, and thus the mask Ml can be dried.

[0122] Also, in the case of the case 100 of Embodiment 1, the mask Ml can be held by sandwiching the mask Ml between the body portion 1 in the self-standing posture and the lower flap portion 2B without using the locking portion 24 of the upper flap portion 2A, thereby holding the mask Ml. At this time, the mask Ml can be held without contacting the mask Ml to an object other than the case 100.

[0123] In addition, in the case of holding the mask Ml by the self-standing case 100, in the case of holding the mask Ml by the locking portion 24 of the upper flap portion 2A, the lower flap portion 2B is not an essential structure, and it is sufficient to provide at least the upper flap portion 2A. The structure of hanging and holding the mask by the locking portion 24 of the upper flap portion 2A is suitable for holding a cloth mask thicker than a nonwoven mask like the mask Ml. Also, in the case of holding the mask Ml by sandwiching the mask Ml between the body portion 1 in the self-standing posture and the lower flap portion 2B, the upper flap portion 2A is not an essential structure, and it is sufficient to provide at least the lower flap portion 2B.

[0124] In addition, in the present example, the upper end portion E1A corresponds to the "other end portion" of the present application, and the lower end portion E1B corresponds to the "one end portion" of the present application, but the present application is not limited thereto, and the upper end portion E1A can be provided as the "one end portion" of the present application, and the lower end portion E1B can be provided as the "other end portion" of the present application. For example, the body portion 1 can be capable of standing by itself in the self-standing posture with the upper end portion E1A, and the locking portion 24 can be formed in the lower flap portion 2B, and the strap Mla of the mask Ml can be locked to the locking portion 24 of the lower flap portion 2B provided in the reversed posture to hold the mask Ml.

[0125] Also, in Embodiment 1, the body portion 1 is formed of a polypropylene resin, and thus, a prescribed rigidity that enables the self-standing posture can be imparted to the body portion 1. However, the material of the body portion of the present application is not limited thereto.

[0126] Embodiment 2

[0127] Figure 10 is a perspective view of a mask case 200 (hereinafter referred to as the case 200) of Embodiment 2. Figure 10 In the drawing, a state in which the body portion 1 is in a posture between the closed posture and the open posture is shown. Figure 10 The symbol M2 in the drawing indicates a mask. The mask M2 is a nonwoven mask. Figure 11 is an expanded view of the case 200. Figure 12 is a perspective view of the case 200 in a state in which the body portion 1 is in the self-standing posture. In addition, the case 200 is not limited to a nonwoven mask, and can be used for storage of a cloth mask. The case 200 of Embodiment 2 has the same technical features as the case 100 of Embodiment 1. Therefore, in the case 200, the mask M2 can be easily taken out and put in.

[0128] Here, as Figure 10 As shown, the box 200 differs from the box 100 mainly in that a pair of locking portions 224, 224 are formed on the lower folding portion 2B. Hereinafter, the box 200 of Embodiment 2 will be compared with that using… Figures 1 to 9 The description will focus on the differences of the box 100 in Embodiment 1. For aspects that are the same as those in the box 100, the same symbols will be used, and detailed descriptions will be omitted.

[0129] like Figure 10 As shown, at the front end of the lower flap portion 2B of the box 200, a pair of locking portions 224, 224 are formed for the insertion of the strap M2a of the mask M2. One of the locking portions 224, 224 is formed in the first cover portion 21, and the other is formed in the second cover portion 22. They are symmetrical about each other about the body hinge axis portion 13 (and the cover hinge axis portion 23). The strap M2a of the mask M2 is inserted through the locking portion 224, thereby locking the strap M2a.

[0130] In box 200, such as Figure 10 As shown, with the mask M1 positioned across the first plate portion 11 and the second plate portion 12 in the placement area A1 of the body portion 1, the straps M2a of the mask M2 are respectively secured to a pair of securing portions 224, 224, and the body portion 1 is closed to store the mask M2. Accordingly, by securing the straps M2a of the mask M2 with the securing portions 224, problems such as the mask M2 shifting position within the box 200 or the mask M2 deforming in shape can be prevented. This method of using the securing portion 224 is suitable for storing non-woven masks such as M2. However, in storing cloth masks, the straps of the mask can also be secured to the securing portions. For example, in the box 100 of the aforementioned embodiment 1, the body portion 1 can also be closed to store the mask M1 with the straps M1a of the mask M1 respectively secured to a pair of securing portions 24, 24. Here, as... Figure 11 As shown, a pair of locking portions 224, 224 open on the central side in the left-right direction, that is, on the side of the body hinge shaft portion 13. Thus, the locking portion 224 formed in the first cover portion 21 restricts the strap M2a from deviating to the left, and the locking portion 224 formed in the second cover portion 22 restricts the strap M2a from deviating to the right. As a result, deviation of the mask M2 in the left-right direction can be better suppressed.

[0131] Moreover, such as Figure 12As shown, in the box 200 of Embodiment 2, the main body 1 can be in an upright position between a closed position and an open position, with its lower end E1B touching the ground. A lower folding portion 2B is provided at the lower end E1B side of the main body 1. Therefore, by clamping the mask M2 between the main body 1 in its upright position and the lower folding portion 2B, the mask M2 can be held in place. Thus, the box 200 can be used as a support for temporarily placing the mask M2. Furthermore, it can also be used as... Figure 12 As shown, when the main body 1 is in an upright position, the strap M2a of the mask M2 is locked in place by the locking part 224. This allows the mask M2 to be held more securely. Additionally, in the box 200, the main body 1 can also be in an upright position with its upper end E1A touching the ground, and the strap M2a of the mask M2 can be locked in place by the locking part 224 of the lower folding part 2B, which is in a reverse position, to hold the mask M2.

[0132] <Implementation Method 3>

[0133] Figure 13 This is a perspective view of the mask box 300 (hereinafter referred to as box 300) according to Embodiment 3. Figure 13 The text indicates the state of the main body 1 in a position between a closed posture and an open posture. Figure 14 This is an unfolded diagram of box 300. Figure 15 This is a plan view of the box 300 when the main body 1 is in a closed position. Figure 16 This is a schematic cross-sectional view showing the state of the box 300 and the mask M2 when the main body 1 is in a closed position, which is equivalent to... Figure 15 A cross-sectional view of the EE section. Figure 16 For convenience, the illustrations of masks such as M2 have been simplified. Figure 17 This is a perspective view of the box 300 when the main body 1 is in an upright position. Furthermore, the box 300 is not limited to non-woven masks such as the mask M2, but can also be used for storing cloth masks. The box 300 of Embodiment 3 has the same technical features as the box 100 of Embodiment 1. Therefore, the mask M2 can be easily placed and removed from the box 300.

[0134] Here, as Figure 13 As shown, the box 300 differs from the box 100 mainly in the following aspects: a first folding portion 25 and a second folding portion 26 with a locking portion 324 are provided on the lower folding portion 2B. Furthermore, the body portion 1 of the box 300 is shorter in width vertically compared to the aforementioned box 100 or box 200. Hereinafter, the box 300 of Embodiment 3 will be compared with... Figures 1 to 9 The description will focus on the differences of the box 100 in Embodiment 1. For aspects that are the same as those in the box 100, the same symbols will be used, and detailed descriptions will be omitted.

[0135] likeFigure 13 As shown, the first folding portion 25 is formed by folding the front end of the first cover portion 21 of the lower side folding portion 2B, and the second folding portion 26 is formed by folding the front end of the second cover portion 22 of the lower side folding portion 2B. Both the first folding portion 25 and the second folding portion 26 are formed from a portion of the second sheet member B2 and have antibacterial properties. Furthermore, each of the first folding portion 25 and the second folding portion 26 has a roughly U-shaped slit, thereby providing a locking portion 324. The locking portion 324 is an elastic sheet formed from a portion of the second sheet member B2. The pair of locking portions 324 are symmetrical about the body hinge axis 13 (and the cover hinge axis 23) as an axis of symmetry. By hooking the strap M2a of the mask M2 onto the locking portion 324, the strap M2a is locked in place.

[0136] In box 300, such as Figure 13 As shown, the mask M2 is positioned across the configuration area A1 of the main body 1 and the first cover 21 and the second cover 22. The mask M2 is inserted between the first cover 21 and the first folding part 25, and between the second cover 22 and the second folding part 26, so that the straps M2a of the mask M2 are respectively secured to a pair of locking parts 324, 324. In this state, the main body 1 is in a closed position, thereby storing the mask M2. With the mask M2 held by the first cover 21 and the first folding part 25, and with the second cover 22 and the second folding part 26, the lower folding part 2B rotates about the first hinge axis 31 and the second hinge axis 32 to become a folded position, thereby, as Figure 16 As shown, the mask M2 is folded by the main body 1 and the lower folding part 2B. In addition, the mask M2 is also folded by the first plate part 11 and the second plate part 12 of the main body 1 in a closed position, so that the mask M2 is stored in the box 300 in a four-fold state.

[0137] According to this type of box 300, the strap M2a of the mask M2 is secured by the locking part 324, thus preventing the mask M2 from shifting position within the box 300 or deforming its shape. Here, as... Figure 14 As shown, a pair of locking portions 324, 324 extend to the central side in the left-right direction, that is, to the side of the body hinge shaft portion 13. Thus, the locking portion 324 formed in the first folding portion 25 restricts the strap M2a from deviating to the left, and the locking portion 324 formed in the second folding portion 26 restricts the strap M2a from deviating to the right. As a result, the deviation of the mask M2 in the left-right direction can be better suppressed.

[0138] Furthermore, according to Box 300, the M2 mask can be folded into a four-fold configuration for storage, thus making the overall size more compact compared to Box 100 or Box 200. As a result, the portability of the box can be further improved.

[0139] Here, as Figure 16 As shown, in box 300, the upper folded portion 2A and the lower folded portion 2B are formed by overlapping each other in a folded-over posture. More specifically, the upper folded portion 2A overlaps the lower folded portion 2B. Figure 14 As shown, in box 300, when overlapped, the tilt angles θ1B and θ2B of the lower side flap portion 2B connecting the lower side to the lower first hinge axis portion 31B and the lower second hinge axis portion 32B of the main body portion 1 are smaller than the tilt angles θ1A and θ2B of the upper side flap portion 2A connecting the upper side to the upper first hinge axis portion 31A and the upper second hinge axis portion 32A of the main body portion 1 when overlapped. More specifically, θ1A = θ2A > θ1B = θ2B. Therefore, when the main body portion 1 changes from an open position to a closed position, the rotation timing of the lower side flap portion 2B and the upper side flap portion 2A around the first hinge axis portion 31 and the second hinge axis portion 32 can be staggered, thereby causing the lower side flap portion 2B to reach the folded position before the upper side flap portion 2A. As a result, the interference between the upper fold portion 2A and the lower fold portion 2B during the transition from an upright posture to a lying posture can be suppressed, thereby allowing the mask M2 to be stored smoothly.

[0140] Moreover, such as Figure 17 As shown, in the box 300 of Embodiment 3, the main body 1 can be in a self-standing position between a closed position and an open position, with its upper end E1A grounded. Therefore, by placing the mask M2 on the upper folding portion 2A and clamping it using the first folding portion 25 and the second folding portion 26 of the lower folding portion 2B, which is in a reversed position, the mask M2 can be held in place. Thus, the box 300 can be used as a support for temporarily placing the mask M2. Furthermore, when the main body 1 is in the self-standing position, the strap M2a of the mask M2 can be secured to the locking portion 324. This allows for more secure holding of the mask M2. Additionally, in the box 300, the main body 1 can also be self-standing with its lower end E1B grounded in the self-standing position.

[0141] <Other>

[0142] The embodiments of the mask box of the present invention have been described above, but the present invention is not limited to the described embodiments and appropriate changes can be made without departing from its spirit.

Claims

1. A mask case for housing a mask, the mask case comprising: a body portion including a first plate portion and a second plate portion, and a body hinge shaft portion rotatably connecting the first plate portion and the second plate portion, and the body portion being rotatable by the first plate portion and the second plate portion with the body hinge shaft portion as a rotation axis, thereby enabling a posture to be changed to a closed posture in which the mask is sandwiched between the first plate portion and the second plate portion, and an open posture in which the first plate portion and the second plate portion are more open than the closed posture, thereby enabling the mask to be taken out and put in; a flap portion provided in the body portion in a region in which the mask is disposed, i.e., a disposition region is at least either one of a position of one end portion side of the body portion or a position of the other end portion side in an extension direction of the body hinge shaft portion; a first hinge shaft portion rotatably connecting the flap portion and the first plate portion; and a second hinge shaft portion rotatably connecting the flap portion and the second plate portion, the first hinge shaft portion and the second hinge shaft portion being obliquely extended in such a manner that, as they are distanced from the body hinge shaft portion in a direction orthogonal to the extension direction of the body hinge shaft portion, they are distanced from the disposition region in the extension direction of the body hinge shaft portion, the flap portion being rotated with the body portion from the closed posture to the open posture with the first hinge shaft portion and the second hinge shaft portion as rotation axes, thereby changing from a laid posture in which the mask is laid on the disposition region side to a standing posture in which the mask is stood with respect to the disposition region.

2. The mask case according to claim 1, wherein the flap portion is rotated with the body portion from the open posture to the closed posture with the first hinge shaft portion and the second hinge shaft portion as rotation axes, thereby changing from the standing posture in which the mask is stood with respect to the disposition region to the laid posture in which the mask is laid on the disposition region side.

3. A mask case for housing a mask, the mask case comprising: a body portion including a first plate portion and a second plate portion, and a body hinge shaft portion rotatably connecting the first plate portion and the second plate portion, and the body portion being rotatable by the first plate portion and the second plate portion with the body hinge shaft portion as a rotation axis, thereby enabling a posture to be changed to a closed posture in which the mask is sandwiched between the first plate portion and the second plate portion, and an open posture in which the first plate portion and the second plate portion are more open than the closed posture, thereby enabling the mask to be taken out and put in; a flap portion provided in the body portion in a region in which the mask is disposed, i.e., a disposition region is at least either one of a position of one end portion side of the body portion or a position of the other end portion side in an extension direction of the body hinge shaft portion; a first hinge shaft portion rotatably connecting the flap portion and the first plate portion; and a second hinge shaft portion rotatably connecting the flap portion and the second plate portion, the first hinge shaft portion and the second hinge shaft portion being obliquely extended in such a manner that, as they are distanced from the body hinge shaft portion in a direction orthogonal to the extension direction of the body hinge shaft portion, they are distanced from the disposition region in the extension direction of the body hinge shaft portion, the flap portion being rotated with the body portion from the closed posture to the open posture with the first hinge shaft portion and the second hinge shaft portion as rotation axes, thereby changing from a laid posture in which the mask is laid on the disposition region side to a standing posture in which the mask is stood with respect to the disposition region. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The first hinge shaft portion and the second hinge shaft portion extend obliquely in such a manner that, as they move away from the body hinge shaft portion in a direction orthogonal to the direction in which the body hinge shaft portion extends, they move away from the arrangement region in the direction in which the body hinge shaft portion extends, The flap portion rotates with the body portion from the open posture to the closed posture, with the first hinge shaft portion and the second hinge shaft portion serving as rotation axes, whereby the flap portion changes from a standing posture in which it stands with respect to the arrangement region to a lying posture in which it lies on the side of the arrangement region.

4. The mask case according to any one of claims 1 to 3, wherein The body portion is capable of assuming a self-standing posture in which it can stand in a state in which the one end portion of the body portion is in contact with the ground, between the closed posture and the open posture, The flap portion is provided at a position on the one end portion side of the body portion.

5. The mask case according to any one of claims 1 to 3, wherein An engaging portion that can engage a string of the mask is formed in the flap portion.

6. The mask case according to claim 5, wherein The body portion is capable of assuming a self-standing posture in which it can stand in a state in which the one end portion of the body portion is in contact with the ground, between the closed posture and the open posture, The flap portion is provided at a position on the other end portion side of the body portion, The flap portion provided at the position on the other end portion side of the body portion is capable of changing posture to a reversed posture in which it is reversed to the opposite side of the body portion with the first hinge shaft portion and the second hinge shaft portion sandwiched therebetween, when the body portion is in the self-standing posture, The engaging portion is formed in the flap portion provided at the position on the other end portion side of the body portion.

7. The mask case according to any one of claims 1 to 3, wherein The flap portion is provided at both the position on the one end portion side of the body portion and the position on the other end portion side of the body portion.

8. The mask case according to claim 7, wherein The flap portion provided on the one end portion side of the body portion and the flap portion provided on the other end portion side of the body portion are formed in such a manner that they overlap in the lying posture, An inclination angle of the first hinge shaft portion and the second hinge shaft portion of the flap portion on the lower side with respect to a direction orthogonal to the body hinge shaft portion when they are connected to each other in the overlapping state is smaller than an inclination angle of the first hinge shaft portion and the second hinge shaft portion of the flap portion on the upper side with respect to a direction orthogonal to the body hinge shaft portion when they are connected to each other in the overlapping state.

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