JP7462526B2 - Mouth shield and mouth shield frame - Google Patents

Description

The present invention relates to a mouth shield for protecting the mouth and a frame used therein.

The following Patent Document 1 describes a frame with temples that can be hung over the ears, and a face guard that uses the frame. However, if the temples are hung over the ears, there is a possibility that the ears will hurt.

Furthermore, when a user who wears glasses uses this face guard, they remove the nose pads from the frame and place the frame on top of the glasses. However, the weight of the face guard is added to the weight of the glasses, which can cause ear pain.

Utility Model Registration No. 3194865

The objective of this invention is to reduce the burden on users.

The mouth shield of the present invention is a mouth shield for covering the mouth of a user, and comprises a frame that is attached to the face of the user and has a shape that extends from the left side of the face to the front of the face and reaches the right side of the face, and a sheet that is attached to the frame and is positioned in front of the mouth to cover the mouth, and the frame has a left side contact part that contacts the left pre-ear part, which is the part of the left side of the face directly in front of the left ear, and a right side contact part that contacts the right pre-ear part, which is the part of the right side of the face directly in front of the right ear.

The user wears the mouth shield on their face. When the mouth shield is worn, the left side contact part of the frame contacts the front of the left ear, and the right side contact part of the frame contacts the front of the right ear. The frame is supported in front of the left and right ears. This reduces the strain on the user's ears.

Preferably, the frame has a left front contact portion located forward of the left lateral contact portion and contacting the left cheekbone, and a right front contact portion located forward of the right lateral contact portion and contacting the right cheekbone. With this configuration, a total of four points, the left lateral contact portion, the left front contact portion, the right lateral contact portion, and the right front contact portion, contact the face. The frame is supported by the face at four points. The left lateral contact portion and the right lateral contact portion prevent the mouth shield from shifting in position, mainly in the left-right direction. The left front contact portion and the right front contact portion prevent the mouth shield from shifting in position, mainly in the front-back direction and the up-down direction. This stabilizes the wearing state of the mouth shield. In particular, the left front contact portion and the right front contact portion contact the left cheekbone and the right cheekbone, respectively, making it difficult for the mouth shield to shift downward. In addition, since the frame is supported by both the left and right cheekbones, the burden on the user's nose is reduced.

Preferably, the frame is a rod-shaped body, and has a front circumferential portion that circulates in the left-right direction in front of the nose, a left lateral extension portion that extends leftward from the left end of the front circumferential portion, a left rear extension portion that extends rearward from the left end of the left lateral extension portion, a right lateral extension portion that extends rightward from the right end of the front circumferential portion, and a right rear extension portion that extends rearward from the right end of the right lateral extension portion, and the left lateral abutment portion is located at the left rear extension portion, the left front abutment portion is located at the left lateral extension portion or at the boundary between the front circumferential portion and the left lateral extension portion, the right lateral abutment portion is located at the right rear extension portion, and the right front abutment portion is located at the right lateral extension portion or at the boundary between the front circumferential portion and the right lateral extension portion. With this configuration, the left lateral abutment portion, the left front abutment portion, the right lateral abutment portion, and the right front abutment portion can be easily provided on the frame, and the configuration of the frame can be simplified. In addition, the left and right front contact parts come into contact with the left and right cheekbones, preventing the front circumferential part from approaching the nose and ensuring space between the front circumferential part and the nose. This leaves the user's nose free.

Preferably, the front circumferential portion is arc-shaped in a plan view. With this configuration, when the user wears the mouth shield, the front circumferential portion is less likely to be in the user's field of vision.

Preferably, the frame has a central engaging portion provided on the front circumferential portion, a left engaging portion provided on the left rear extension portion, and a right engaging portion provided on the right rear extension portion, and the seat has a central engaged portion that engages with the central engaging portion, a left engaged portion that engages with the left engaging portion, and a right engaged portion that engages with the right engaging portion, and the seat is detachably attached to the frame by engaging the central engaged portion, the left engaged portion, and the right engaged portion with the central engaged portion, the left engaged portion, and the right engaged portion, respectively. With this configuration, the seat can be easily attached to and detached from the frame. Also, various seats can be attached to the frame. The seat can be easily replaced depending on the usage situation, the user's preferences, etc. Since the central engaging portion, the left engaging portion, and the right engaging portion are provided on the front circumferential portion, the left rear extension portion, and the right rear extension portion, respectively, the nose, mouth, and both left and right cheekbones of the user can be easily covered with the seat. In other words, the seat can easily cover a wide range of the face in the left and right directions.

Preferably, the central engagement portion, the left engagement portion, and the right engagement portion are provided on the outer surface of the frame, and the sheet is attached to the outer surface of the frame. With this configuration, the sheet is less likely to come into contact with the face. Also, the sheet can easily cover a wide area of the face.

Preferably, the left engagement portion is provided in front of the left rear extension portion, and the right engagement portion is provided in front of the right rear extension portion. With this configuration, the seat curves more smoothly than in a configuration in which the left engagement portion and the right engagement portion are provided in the rear of the left rear extension portion and the rear of the right rear extension portion, respectively.

Preferably, the front circumferential portion, the left lateral extension portion, the left rear extension portion, the right lateral extension portion, and the right rear extension portion are located on the same plane, and when the seat is flat, the left engaged portion and the right engaged portion are located above the central engaged portion. With this configuration, when the seat is attached to the frame, the left-right central portion of the seat is inclined so that the lower portion of the seat is located further forward than the upper portion of the seat. Therefore, when the mouth shield is worn, the seat does not come too close to the mouth, and sufficient space is secured between the seat and the mouth.

Preferably, when the frame is in a horizontal position, the center of the seat in the left-right direction is inclined so that the lower part of the seat is positioned further forward than the upper part of the seat. With this configuration, when the mouth shield is worn, the seat does not come too close to the mouth, and sufficient space is secured between the seat and the mouth.

Preferably, the sheet has an upward protruding portion that protrudes upward relative to the frame, and a downward protruding portion that protrudes downward relative to the frame and covers the mouth, and the maximum vertical length of the upward protruding portion is shorter than the maximum vertical length of the downward protruding portion. With this configuration, the sheet does not protrude significantly upward from the frame. Therefore, the sheet is less likely to cover the front of the user's eyes. The sheet is less likely to obstruct vision, ensuring good visibility. This is particularly effective when the sheet is opaque.

The frame of the mouth shield according to the present invention is used in a mouth shield to cover the mouth of a user, and is a frame that is attached to the user's face, and has a shape that reaches from the left side of the face via the front of the face to the right side of the face, and has a left side abutment part that abuts the left pre-ear part, which is the part of the left side of the face directly in front of the left ear, and a right side abutment part that abuts the right pre-ear part, which is the part of the right side of the face directly in front of the right ear.

As described above, the frame is supported in front of the left and right ears, reducing strain on the user's ears.

FIG. 2 is a perspective view showing a mouth shield in one embodiment of the present invention. FIG. FIG. FIG. FIG. 4 is a perspective view showing a frame of the mouth shield. 1A is a plan view of the frame, and FIG. 1B is an enlarged view of part A in FIG. FIG. FIG. FIG. FIG. FIG. FIG. FIG. FIG. FIG. 13 is a plan view showing a mouth shield according to another embodiment of the present invention. FIG. 13 is a plan view showing a mouth shield according to another embodiment of the present invention. FIG. FIG. FIG. 13 is a plan view showing a mouth shield according to another embodiment of the present invention.

<Overall composition>
A mouth shield 1 according to one embodiment of the present invention will be described below with reference to Figs. 1 to 14. Figs. 1 to 4 show the mouth shield 1 of this embodiment. The mouth shield 1 is worn on the face of a user and mainly covers the mouth of the user, and preferably covers the mouth and nose. The mouth shield 1 includes a frame 2 that is attached to the face, and a sheet 3 that is detachably attached to the frame 2 and is positioned in front of the mouth to cover the mouth.

<Frame 2>
5 and 6 show the frame 2 in a single state. The frame 2 is a single rod-shaped body. The rod-shaped body is preferably elastic. The rod-shaped body may be made of various materials. The rod-shaped body is preferably made of synthetic resin, but may be made of metal such as aluminum or titanium. The frame 2 is curved forward along the left-right direction as a whole. The entire frame 2 is located on one plane. The frame 2 has a shape that goes from the left profile to the right profile, going around the front of the face in the left-right direction and reaching the right profile. Specifically, the frame 2 has a length that reaches from the left preauricular part 100, which is the part immediately in front of the left ear, through the front of the nose to the right preauricular part 101, which is the part immediately in front of the right ear. The left preauricular part 100 is the part immediately in front of the left ear hole and the tragus 102, and the right preauricular part 101 is the part immediately in front of the right ear hole and the tragus 102. The frame 2 elastically deforms in the left-right direction so that the left end and the right end of the frame 2 approach and move away from each other.

The frame 2 has a symmetrical shape as shown in FIG. 6. The frame 2 has a front circumferential portion 10, a left lateral extension portion 11, a left rear extension portion 12, a right lateral extension portion 13, and a right rear extension portion 14. The front circumferential portion 10, the left lateral extension portion 11, the left rear extension portion 12, the right lateral extension portion 13, and the right rear extension portion 14 are located on the same plane. The front circumferential portion 10 constitutes the central portion of the overall length of the frame 2. The front circumferential portion 10 is preferably curved forward. The front circumferential portion 10 is preferably arc-shaped, and more preferably semicircular.

The left side lateral extension 11 extends from the left end of the front circumferential portion 10 toward the left side. The left side lateral extension 11 preferably extends from the left end of the front circumferential portion 10 toward the left rear. The first boundary 71 between the front circumferential portion 10 and the left side lateral extension 11 is preferably not bent but is curved inward. The left rear extension 12 extends rearward from the left end of the left side lateral extension 11. The left rear extension 12 is preferably inclined slightly inward, i.e., to the right, in the front-to-rear direction as a whole. The inclination angle of the left rear extension 12 with respect to the front-to-rear direction is preferably 10 degrees or less. The second boundary 72 between the left side lateral extension 11 and the left rear extension 12 is preferably not bent but is curved outward. The rear part of the left rear extension 12 is inclined more inward than the front part of the left rear extension 12. The rear end of the left rear extension 12 is the left end of the frame 2. The rear end of the left rear extension 12 is provided with a left escape portion 15 that curves outward, i.e., toward the left side.

The right side lateral extension 13 and the right rear extension 14 are symmetrical with respect to the left side lateral extension 11 and the left rear extension 12. The right side lateral extension 13 extends from the right end of the front circumferential portion 10 toward the right side. It is preferable that the right side lateral extension 13 extends from the right end of the front circumferential portion 10 toward the right rear. It is preferable that the third boundary 73 between the front circumferential portion 10 and the right side lateral extension 13 is not a bent shape, but is a curved shape that is curved inward. The right rear extension 14 extends from the right end of the right side lateral extension 13 toward the rear. It is preferable that the right rear extension 14 is inclined slightly inward, i.e., to the left, in the front-to-rear direction as a whole. The inclination angle of the right rear extension 14 with respect to the front-to-rear direction is preferably 10 degrees or less. It is preferable that the fourth boundary 74 between the right side lateral extension 13 and the right rear extension 14 is not a bent shape, but is a curved shape that is curved outward. The rear of the right rear extension 14 is inclined more inward than the front of the right rear extension 14. The rear end of the right rear extension 14 is the right end of the frame 2. The rear end of the right rear extension 14 is provided with a right escape portion 16 that curves outward, i.e., toward the right side.

The frame 2 has a central protrusion 20, a left protrusion 21, and a right protrusion 22 to allow the frame 2 to be detachably attached. The central protrusion 20 is a central engagement portion, the left protrusion 21 is a left engagement portion, and the right protrusion 22 is a right engagement portion. The number of central protrusions 20, left protrusions 21, and right protrusions 22 is arbitrary, and each may be one or more. In this embodiment, the number of central protrusions 20, left protrusions 21, and right protrusions 22 is one each. The central protrusions 20, left protrusions 21, and right protrusions 22 are arranged symmetrically.

The central protrusion 20 is provided on the front circumferential portion 10. The central protrusion 20 is provided in the left-right central portion of the front circumferential portion 10. The left-right central portion of the front circumferential portion 10 is the portion located at the front end of the entire length of the front circumferential portion 10. The left protrusion 21 is provided on the left rear extension portion 12. The left protrusion 21 is preferably provided in the front portion of the left rear extension portion 12. The right protrusion 22 is located symmetrically to the left protrusion 21. The right protrusion 22 is provided on the right rear extension portion 14. The right protrusion 22 is preferably provided in the front portion of the right rear extension portion 14.

The central protrusion 20, the left protrusion 21, and the right protrusion 22 are provided on the outer surface of the frame 2. The central protrusion 20, the left protrusion 21, and the right protrusion 22 may be the same shape as each other or may be different. In this embodiment, the central protrusion 20, the left protrusion 21, and the right protrusion 22 are the same shape as each other. The central protrusion 20, the left protrusion 21, and the right protrusion 22 protrude outward from the outer surface of the frame 2. The central protrusion 20 protrudes forward from the front circumferential portion 10, the left protrusion 21 protrudes leftward from the left rear extension portion 12, and the right protrusion 22 protrudes rightward from the right rear extension portion 14. The central protrusion 20 is the part located at the frontmost position of the frame 2, the left protrusion 21 is the part located at the leftmost position of the frame 2, and the right protrusion 22 is the part located at the rightmost position of the frame 2.

Since the central protrusion 20, the left protrusion 21, and the right protrusion 22 have the same shape, the central protrusion 20 will be described in detail. When viewed from the tip side in the protruding direction, the central protrusion 20 is circular. As shown in FIG. 6(b), the central protrusion 20 has a shaft portion 23 located at the base end of the central protrusion 20 and a head portion 24 located at the tip end of the central protrusion 20. The shaft portion 23 is cylindrical. The head portion 24 has a larger diameter than the shaft portion 23. The head portion 24 has a tapered shape that gradually becomes smaller in diameter toward the tip. As will be described later, the sheet 3 is located on the shaft portion 23 and is engaged by the head portion 24.

<Sheet 3 (flat state)>
First, the state of the sheet 3 alone will be described. Fig. 7 shows the state of the sheet 3 alone. Before being attached to the frame 2, the sheet 3 is in a flat state without being curved as shown in Fig. 7. Fig. 7 is a view of the sheet 3 as seen from the front, with the right side as you face the page being the left side of the sheet 3 and the left side as you face the page being the right side of the sheet 3.

The sheet 3 is preferably elastic. The material of the sheet 3 may be various. The material of the sheet 3 is preferably a synthetic resin. The sheet 3 may be transparent or opaque. The sheet 3 may be colored or uncolored. The sheet 3 may be colored and transparent, colorless and transparent, or translucent. The sheet 3 may have various patterns. When the sheet 3 is transparent, the part of the face covered by the sheet 3 can be seen from the outside through the sheet 3. When the sheet 3 is opaque, there is an advantage that the sheet 3 can hide a part of the face, especially the area around the mouth, and the part of the face cannot be seen from the outside. In addition, when the sheet 3 is opaque, it is easy to tell that the mouth shield 1 is being worn.

The shape of the sheet 3 may be various. It is preferable that the sheet 3 has a horizontally elongated shape that is long in the left-right direction. It is preferable that the vertical length of the sheet 3 gradually shortens from the center in the left-right direction toward both ends. It is preferable that the upper edge 3a of the sheet 3 gradually rises toward both ends in the left-right direction. It is preferable that the upper edge 3a of the sheet 3 is V-shaped as a whole. The upper edge 3a of the sheet 3 has a left inclined portion 30 that gradually rises from the center in the left-right direction of the upper edge 3a toward the left side, and a right inclined portion 31 that gradually rises from the center in the left-right direction of the upper edge 3a toward the right side. The upper edge 3a of the sheet 3 has a left-right symmetrical shape. The left inclined portion 30 and the right inclined portion 31 make the upper edge 3a of the sheet 3 V-shaped. It is preferable that the lower edge 3b of the sheet 3 gradually rises toward both ends in the left-right direction. The lower edge 3b of the sheet 3 is located in the center in the left-right direction and has a central curved portion 32 that is curved downward with a first radius of curvature, a left curved portion 33 that continues to the left side of the central curved portion 32 and curves downward with a second radius of curvature smaller than the first radius of curvature, and a right curved portion 34 that continues to the right side of the central curved portion 32 and curves downward with a second radius of curvature smaller than the first radius of curvature. Mainly due to the left curved portion 33 and the right curved portion 34, the lower edge 3b of the sheet 3 rises at a steeper angle toward both ends in the left-right direction than the upper edge 3a of the sheet 3.

The seat 3 has a central engagement hole 40, a left engagement hole 41, and a right engagement hole 42. The central engagement hole 40, the left engagement hole 41, and the right engagement hole 42 are all round holes with the same diameter. The central engagement hole 40, the left engagement hole 41, and the right engagement hole 42 are provided at a location closer to the upper edge 3a of the seat 3 than to the lower edge 3b. The central engagement hole 40 is a central engaged portion that engages with the central protrusion 20 of the frame 2. The left engagement hole 41 is a left engaged portion that engages with the left protrusion 21. The right engagement hole 42 is a right engaged portion that engages with the right protrusion 22. The central engagement hole 40, the left engagement hole 41, and the right engagement hole 42 engage with the central protrusion 20, the left protrusion 21, and the right protrusion 22 of the frame 2, respectively.

The central engagement hole 40, the left engagement hole 41, and the right engagement hole 42 are arranged symmetrically. The central engagement hole 40 is located in the center of the seat 3 in the left-right direction. The left engagement hole 41 is located near the left end of the seat 3. The right engagement hole 42 is located near the right end of the seat 3. In a flat state, the left engagement hole 41 and the right engagement hole 42 are located above the central engagement hole 40.

<Sheet 3 (installed state)>
Next, the attachment state of the seat 3 will be described. Figures 1 to 4 show the state in which the seat 3 is attached to the frame 2. The seat 3 is attached to the outer surface of the frame 2. The seat 3 is detachably attached to the frame 2 by engaging the central engagement hole 40, left engagement hole 41, and right engagement hole 42 of the seat 3 with the central protrusion 20, left protrusion 21, and right protrusion 22 of the frame 2, respectively. The seat 3 is engaged by the heads 24 of the central protrusion 20, left protrusion 21, and right protrusion 22, and is held to the frame 2.

As shown in FIG. 4, the seat 3 is attached to the frame 2 and curved in a U-shape along the left-right direction. The center of the seat 3 in the left-right direction abuts the front circumferential portion 10. The left lateral extension portion 11 and the right lateral extension portion 13 are spaced apart from the seat 3. Both ends of the seat 3 in the left-right direction reach the left rear extension portion 12 and the right rear extension portion 14 of the frame 2, respectively. Both ends of the seat 3 in the left-right direction face rearward along the front portion of the left rear extension portion 12 and the front portion of the right rear extension portion 14, respectively. Both ends of the seat 3 in the left-right direction are located forward of the left and right ends of the frame 2 and do not protrude rearward of the left and right ends of the frame 2. As shown in FIG. 1, the front circumferential portion 10, the left lateral extension portion 11, the front portion of the left rear extension portion 12, the right lateral extension portion 13, and the front portion of the right rear extension portion 14 are covered from the outside by the seat 3.

As shown in FIG. 2, the sheet 3 has a horizontally long rectangular shape in front view, and more specifically, a trapezoidal shape. As shown in FIG. 3, the sheet 3 has a right-angled triangular shape or a sector shape in side view.

2 and 3, the entire upper edge 3a of the seat 3 is located above the frame 2, and the entire lower edge 3b of the seat 3 is located below the frame 2. The portion of the seat 3 that protrudes upward relative to the frame 2 is called the upper protrusion 50, and the portion of the seat 3 that protrudes downward relative to the frame 2 is called the downward protrusion 51. The maximum vertical length T1 of the upper protrusion 50 is shorter than the maximum vertical length T2 of the downward protrusion 51. The vertical length of the upper protrusion 50 is maximum at the center in the left-right direction. As shown in FIG. 3, when the frame 2 is in a horizontal state, the center in the left-right direction of the seat 3 is not perpendicular to the frame 2, but is inclined so that the lower part of the seat 3 is forward of the upper part of the seat 3. The inclination angle θ with respect to the vertical direction is, for example, 10 degrees or less.

<Worn condition (without glasses)>
Next, a state in which the mouth shield 1 is used will be described. The mouth shield 1 is worn on the face of a user. Figures 8 to 14 show the state in which the mouth shield 1 is worn. Figures 8 to 11 show the case in which the user is not wearing the glasses 200.

The frame 2 is attached to the face so that it extends from the front of the left ear to the front of the nose and then to the front of the right ear. The frame 2 wraps around in the left-right direction at a position below the user's eyes. The front wrapping portion 10 of the frame 2 wraps around in the left-right direction in front of the tip of the nose (top of the nose). In particular, it is preferable that the front wrapping portion 10 wraps around in the left-right direction at a position above the tip of the nose. When the mouth shield 1 is attached to the face, the frame 2 is in a substantially horizontal state or slightly tilted downward, as shown in FIG. 10. In addition, both ends of the frame 2 in the left-right direction elastically deform so as to open left and right against the elasticity of the frame 2 compared to before it is attached to the face.

The frame 2 comes into contact with the face at multiple points. Specifically, the frame 2 comes into contact with the face at four points: two on the left side and two on the right side. The frame 2 has four parts that come into contact with the face. As shown in FIG. 11, the frame 2 has a left lateral contact portion 60, a left front contact portion 61, a right lateral contact portion 62, and a right front contact portion 63 as parts that come into contact with the face.

The left lateral contact portion 60 contacts the left ear front portion 100 from the left side. The left lateral contact portion 60 is located in the left rear extension portion 12. In detail, the left lateral contact portion 60 is located in the rear portion of the left rear extension portion 12, and in particular, in the rear end portion of the left rear extension portion 12. The left lateral contact portion 60 may be, for example, the entire rear portion of the left rear extension portion 12, or the entire left rear extension portion 12.

The left front contact portion 61 is located forward of the left lateral contact portion 60 and to the right of the left lateral contact portion 60, i.e., closer to the center of the face. The left front contact portion 61 is located in the left lateral extension portion 11 or the first boundary portion 71. The left front contact portion 61 contacts the left cheekbone 103, and in particular, the upper part of the left cheekbone 103. The left front contact portion 61 contacts the left cheekbone 103 from the left diagonal front. The left front contact portion 61 is located to the left of the nose. The left front contact portion 61 may be, for example, both the first boundary portion 71 and the left lateral extension portion 11, or may be the entire left lateral extension portion 11.

The right lateral contact portion 62 contacts the right ear front portion 101 from the right side. The right lateral contact portion 62 is located in the right rear extension portion 14. In detail, the right lateral contact portion 62 is located in the rear portion of the right rear extension portion 14, and in particular, in the rear end portion of the right rear extension portion 14. The right lateral contact portion 62 may be, for example, the entire rear portion of the right rear extension portion 14, or the entire right rear extension portion 14.

The right front contact portion 63 is located forward of the right lateral contact portion 62 and to the left of the right lateral contact portion 62, i.e., closer to the center of the face. The right front contact portion 63 is located in the right lateral extension portion 13 or the third boundary portion 73. The right front contact portion 63 contacts the right cheekbone 104, and in particular, the upper part of the right cheekbone 104. The right front contact portion 63 contacts the right cheekbone 104 from the front right diagonally. The right front contact portion 63 is located to the right of the nose. The right front contact portion 63 may be, for example, both the third boundary portion 73 and the right lateral extension portion 13, or may be the entire right lateral extension portion 13.

The left and right lateral contact portions 60 and 62 maintain their contact with the left and right pre-auricular portions 100 and 101, respectively, due to the elastic restoring force of the frame 2. The left and right front contact portions 61 and 63 contact the left and right cheekbone 103 and 104, respectively, so that the front circumferential portion 10 moves forward away from the nose without contacting it, and circulates left and right in front of the nose. In addition, the left and right front contact portions 61 and 63 contact the left and right cheekbone 103 and 104, respectively, preventing the frame 2 from shifting downward.

The left lateral abutment portion 60 is located in the left rear extension portion 12. The left lateral abutment portion 60 is located in the rear portion of the left rear extension portion 12, and in particular, at the rear end portion of the left rear extension portion 12. In other words, the left lateral abutment portion 60 is located at the left end portion of the frame 2. The left front abutment portion 61 is located in the left lateral extension portion 11. The left front abutment portion 61 is located near the right end portion of the left lateral extension portion 11.

The right lateral contact portion 62 and the right front contact portion 63 are positioned symmetrically to the left lateral contact portion 60 and the left front contact portion 61. The right lateral contact portion 62 is positioned in the right rear extension portion 14, and in particular, is positioned at the rear end portion of the right rear extension portion 14. In other words, the right lateral extension portion is positioned at the right end portion of the frame 2. The right front contact portion 63 is positioned in the right lateral extension portion 13. The right front contact portion 63 is positioned near the left end portion of the right lateral extension portion 13.

The left lateral contact portion 60 may be a part or the whole of the left rear extension portion 12. The left front contact portion 61 may be a part or the whole of the left side lateral extension portion 11. The right lateral contact portion 62 may be a part or the whole of the right rear extension portion 14. The right front contact portion 63 may be a part or the whole of the right side lateral extension portion 13.

The sheet 3 covers the lower half of the user's face from the front. The sheet 3 does not contact the face, but is spaced forward from the face. The sheet 3 covers the mouth to protect the user's mouth from splashes and the like. The sheet 3 also suppresses the spread of splashes released from the user's mouth. It is preferable that the sheet 3 covers the user's mouth and nose. The sheet 3 covers only the lower part of the user's face, and does not cover the upper part of the face. In other words, the upper part of the face is exposed and not covered by the sheet 3. It is preferable that the upper edge 3a of the sheet 3 is located below the user's eyes. It is preferable that the sheet 3 is not located in front of the eyes, and it is preferable that the sheet 3 does not cover the eyes. The center of the lower edge 3b of the sheet 3 in the left-right direction is located in front of the user's chin.

The sheet 3 covers not only the nose and mouth, but also the left and right cheekbones 103, 104. The left and right ends of the sheet 3 are located behind the eyes. The left end of the sheet 3 is located between the left eye and the left ear, and in particular, halfway between the left eye and the left ear in the front-to-back direction. Similarly, the right end of the sheet 3 is located between the right eye and the right ear, and in particular, halfway between the right eye and the right ear in the front-to-back direction. The sheet 3 covers the nose, mouth, and left and right cheekbones 103, 104 from the front as well as from the left and right sides.

<Wearing condition (with glasses 200)>
12 to 14 show a state in which a user wearing glasses 200 puts on the mouth shield 1. The glasses 200 come into contact with the top of the nose and are hung on both ears. The glasses 200 are positioned higher than the mouth shield 1, and in particular, higher than the frame 2 of the mouth shield 1. The temples of the glasses 200 are also positioned higher than the frame 2 of the mouth shield 1. The user can put on and take off the glasses 200 while still wearing the mouth shield 1.

As described above, the frame 2 is supported by the left ear front part 100 and the right ear front part 101. The frame 2 does not rest on both ears. Therefore, the ears do not hurt and the burden on the ears is reduced. Because both ears are free, the user can wear the glasses 200 even when wearing the mouth shield 1. The left ear front part 100 and the right ear front part 101 have recessed parts. When the left lateral abutment part 60 and the right lateral abutment part 62 of the frame 2 abut against the recessed parts, the frame 2 is stable and does not easily slip. The left and right ends of the frame 2 are provided with a left escape part 15 and a right escape part 16, respectively, so that the left ear front part 100 and the right ear front part 101 are less likely to hurt.

In addition to the left ear front part 100 and the right ear front part 101, the frame 2 is also supported by the left and right cheekbones 103, 104. The left lateral abutment part 60 and the right lateral abutment part 62 suppress the mouth shield 1 from being displaced mainly in the left-right direction. The left front abutment part 61 and the right front abutment part 63 suppress the mouth shield 1 from being displaced mainly in the front-back direction and the up-down direction. In this way, the frame 2 is supported at four points on the face, so that the mouth shield 1 can be worn in a stable state. The left lateral abutment part 60 and the left front abutment part 61 are spaced apart in the front-back direction, and the right lateral abutment part 62 and the right front abutment part 63 are spaced apart in the front-back direction, so that the mouth shield 1 can be worn in a stable state. The left front abutment part 61 and the right front abutment part 63 abut against the left and right cheekbones 103, 104, so that the mouth shield 1 is less likely to be displaced downward. Because the frame 2 is supported by the left and right cheekbones 103, 104, the burden on the user's nose is reduced. The left and right cheekbones 103, 104 are, for example, closer to the nose and mouth than the forehead. Therefore, by supporting the frame 2 by the left and right cheekbones 103, 104, the distance between the mouth and nose and the sheet 3 can be stably secured compared to a configuration in which the frame 2 is supported by the forehead.

Since the frame 2 is a single rod-shaped body, the structure of the frame 2 can be simplified.Since the entire frame 2 is located on the same plane, the structure of the frame 2 can be simplified.By utilizing the elasticity of the frame 2, the mouth shield 1 can be stably worn.Since the front circumferential part 10 goes around the front of the nose in the left-right direction and a space is secured between the front circumferential part 10 and the nose, the nose of the user is released from the frame 2.This reduces the burden on not only the user's ears but also the nose.Since the ears and nose are released from the frame 2, the glasses 200 can be worn even when the mouth shield 1 is worn.

The front circumferential portion 10 goes around in the left-right direction in front of the nose. Therefore, the front circumferential portion 10 is unlikely to get in the field of view and is unlikely to be an eyesore. If the front circumferential portion 10 is arc-shaped in a plan view, the front circumferential portion 10 is unlikely to be an eyesore. In particular, if the front circumferential portion 10 is semicircular, it is unlikely to obstruct the field of view while ensuring sufficient space between the nose. In addition, the sheet 3 is likely to curve left and right along the front circumferential portion 10.

The sheet 3 covers the mouth, nose, and left and right cheekbones 103, 104 from the front and both sides, so splashes and the like can be easily prevented. The sheet 3 does not touch the face, so the mouth shield 1 can be worn comfortably. The sheet 3 is attached to the outer surface of the frame 2, so the sheet 3 is less likely to touch the face, and the sheet 3 can be easily attached to the frame 2. The sheet 3 can be easily attached to the frame 2 by engaging the central projection 20, left projection 21, and right projection 22 of the frame 2 with the central engagement hole 40, left engagement hole 41, and right engagement hole 42 of the sheet 3. The central projection 20, left projection 21, and right projection 22 protrude from the outer surface of the frame 2, so the sheet 3 can be easily attached. The central projection 20 is provided on the front circumferential portion 10, and the left projection 21 and right projection 22 are provided on the front part of the left rear extension portion 12 and the front part of the right rear extension portion 14, respectively, so that the sheet 3 curves smoothly.

The center of the seat 3 in the left-right direction is tilted forward, so the seat 3 does not get too close to the mouth. This ensures sufficient space between the seat 3 and the mouth. When the seat 3 is flat, the left engagement hole 41 and the right engagement hole 42 are located above the center engagement hole 40, so when the seat 3 is attached to the frame 2, the center of the seat 3 in the left-right direction can be easily tilted forward.

Because the sheet 3 does not protrude significantly upward from the frame 2, the sheet 3 does not cover the front of the eyes and is unlikely to obstruct vision. This ensures good vision and makes it easy to put on and take off the glasses 200. An opaque sheet 3 can also be used. When an opaque sheet 3 is used, any smudges on the makeup are hidden by the sheet 3 and are difficult to see from the outside.

The glasses 200 are positioned higher than the frame 2 of the mouth shield 1. Therefore, the mouth shield 1 can be worn even when the glasses 200 are worn. Since the weight of the mouth shield 1 does not act on the glasses 200, the ears and nose are less likely to hurt, and the burden on the user is small. Since the upward protrusion 50 of the sheet 3 is small, the glasses 200 can be easily put on and taken off while the mouth shield 1 is still worn. In addition, since the mouth shield 1 does not affect the wearing state of the glasses 200, the mouth shield 1 can be easily put on and taken off while the glasses 200 is still worn.

As shown in FIG. 15, the pads 80 may be attached to the left rear extension 12 and the right rear extension 14. When the pads 80 are attached to the frame 2, the pads 80 become the left lateral abutment 60 and the right lateral abutment 62. The pads 80 are, for example, cylindrical. The pads 80 are preferably softer than the frame 2. The pads 80 may be made of, for example, silicone rubber. By covering the left rear extension 12 and the right rear extension 14 with the pads 80, the fit can be improved and the stability of the mouth shield 1 can be increased. The left protrusion 21 and the right protrusion 22 are provided in the front of the left rear extension 12 and the front of the right rear extension 14, respectively, so that the pads 80 can be easily attached to the rear of the left rear extension 12 and the rear of the right rear extension 14. The pads 80 may be attached to the frame 2 in a detachable manner or in a non-detachable manner.

Also, as shown in Figs. 16 to 18, two central protrusions 20 may be provided on the front circumferential portion 10. In this case, two central engagement holes 40 are provided on the seat 3. The number of central protrusions 20 may be three, or the number of central protrusions 20 may vary. When the user attaches the seat 3 to the frame 2, for example, the user first engages the two central protrusions 20 with the two central engagement holes 40. After that, the user engages the left protrusion 21 and the right protrusion 22 with the left engagement hole 41 and the right engagement hole 42, respectively. If multiple central protrusions 20 are provided, the seat 3 is less likely to rotate relative to the frame 2 when the user engages the left protrusion 21 and the right protrusion 22 with the left engagement hole 41 and the right engagement hole 42, respectively. Therefore, the left protrusion 21 and the right protrusion 22 can be easily engaged with the left engagement hole 41 and the right engagement hole 42, respectively.

Furthermore, as shown in FIG. 19, the left protrusion 21 may be provided at the second boundary 72 between the left rear extension 12 and the left side lateral extension 11, and the right protrusion 22 may be provided at the fourth boundary 74 between the right rear extension 14 and the right side lateral extension 13. However, as shown by the two-dot chain line of the seat 3, both the left and right ends of the seat 3 tend to move away from the left rear extension 12 and the right rear extension 14 to the side. Therefore, it is preferable that the left protrusion 21 and the right protrusion 22 are provided at the front of the left rear extension 12 and the front of the right rear extension 14, respectively.

In the above embodiment, the frame 2 has a left front contact portion 61 that contacts the left cheekbone 103 and a right front contact portion 63 that contacts the right cheekbone 104, but the frame 2 may also have, for example, a nose contact portion that contacts the nose or a forehead contact portion that contacts the forehead.

REFERENCE SIGNS LIST 1 mouth shield 2 frame 3 seat 3a upper edge 3b lower edge 10 front circumferential portion 11 left side lateral extension portion 12 left rear extension portion 13 right side lateral extension portion 14 right rear extension portion 15 left recessed portion 16 right recessed portion 20 central protrusion (central engagement portion)
21 Left protrusion (left engagement portion)
22 Right protrusion (right engagement portion)
23 Shaft portion 24 Head portion 30 Left inclined portion 31 Right inclined portion 32 Central curved portion 33 Left curved portion 34 Right curved portion 40 Central engagement hole (central engaged portion)
41 Left engagement hole (left engaged portion)
42 Right engagement hole (right engaged portion)
50 Upper protrusion 51 Lower protrusion 60 Left lateral contact portion 61 Left front contact portion 62 Right lateral contact portion 63 Right front contact portion 71 First boundary portion 72 Second boundary portion 73 Third boundary portion 74 Fourth boundary portion 80 Pad 100 Left front ear portion 101 Right front ear portion 102 Tragus 103 Left cheekbone 104 Right cheekbone 200 Glasses

Claims (7)

A mouth shield for covering a user's mouth,
A rod-shaped frame that is attached to the face of a user and has a shape that extends from the left side of the face to the front of the face and reaches the right side of the face;
a sheet attached to the frame and positioned in front of the mouth to cover the mouth;
The frame is
A front circumferential portion that circulates in the left-right direction in front of the nose;
a left side extension portion extending leftward from a left end portion of the front circumferential portion;
a left rearward extending portion extending rearward from a left end portion of the left sideward extending portion;
A left side abutment portion provided on the left rear extension portion and abutting a left front-of-ear portion that is a portion of the left side of the face directly in front of the left ear;
a left front contact portion provided at the left lateral extension portion or at the boundary between the front circumferential portion and the left lateral extension portion, the left front contact portion contacting the left cheekbone;
a right lateral extension portion extending rightward from a right end portion of the front circumferential portion;
a right rearward extending portion extending rearward from a right end portion of the right lateral extending portion;
A right side abutment portion is provided on the right rear extension portion and abuts against a right front ear portion of the right side of the face, which is a portion immediately in front of the right ear;
a right front contact portion provided at the right lateral extension portion or at the boundary between the front circumferential portion and the right lateral extension portion, the right front contact portion contacting the right cheekbone;
A central engagement portion provided on the front circumferential portion;
A left engagement portion provided on the left rear extension portion;
A right engagement portion provided on the right rear extension portion;
having
The seat is
a central engaged portion that engages with the central engaging portion;
a left engaged portion that engages with the left engaging portion;
a right engaged portion that engages with the right engaging portion;
having
The seat is removably attached to the frame by the central engaging portion, the left engaging portion, and the right engaging portion engaging with the central engaged portion, the left engaged portion, and the right engaged portion, respectively . The mouth shield according to claim 1 , wherein the front circumferential portion is arc-shaped in a plan view. 3. The mouth shield according to claim 1, wherein the central engagement portion, the left engagement portion and the right engagement portion are provided on an outer surface of the frame, and the sheet is attached to the outer surface of the frame. 4. The mouth shield according to claim 3 , wherein the left engagement portion is provided in a front portion of the left rear extension portion, and the right engagement portion is provided in a front portion of the right rear extension portion. The front circumferential portion, the left lateral extension portion, the left rear extension portion, the right lateral extension portion, and the right rear extension portion are located on the same plane,
5. The mouth shield according to claim 1 , wherein the left and right engaged portions are positioned above the central engaged portion when the seat is in a flat state. A mouth shield for covering a user's mouth,
A frame that is attached to a user's face and has a shape that extends from the left side of the face to the right side of the face via the front of the face;
a sheet attached to the frame and positioned in front of the mouth to cover the mouth;
the frame has a left side contact portion that contacts a left ear front portion that is a portion immediately in front of the left ear on the left side of the face, and a right side contact portion that contacts a right ear front portion that is a portion immediately in front of the right ear on the right side of the face,
A mouth shield in which, when the frame is in a horizontal position, the left-right center of the seat is inclined so that the lower part of the seat is positioned further forward than the upper part of the seat. A mouth shield as described in any one of claims 1 to 6, wherein the sheet has an upward protruding portion that protrudes upward relative to the frame and a downward protruding portion that protrudes downward relative to the frame and covers the mouth, and the maximum vertical length of the upward protruding portion is shorter than the maximum vertical length of the downward protruding portion.

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