CN211835893U - a nasal mask - Google Patents

Abstract

The utility model provides a nose mask relates to nose filter technical field. The nose mask comprises a mask body, a filter and a one-way exhaust valve, wherein the mask body is provided with a nasal cavity butt joint part, and both sides of the nasal cavity butt joint part are provided with cheek matching parts; the internal respiratory airway that has of cover, nasal cavity butt joint portion have the nasal cavity to the interface, have the blow vent in cheek cooperation portion, and the sealed intercommunication blow vent of respiratory airway and nasal cavity to the interface, filter detachably install in the department of vent, and one-way discharge valve installs in vent department. The nasal mask is favorable for improving the air filtering speed of the filter, can provide sufficient filtering gas for a user, is favorable for ensuring that the user can smoothly breathe in, is favorable for improving the sealing performance of the nasal mask, and is favorable for improving the comfort of the user wearing the nasal mask.

Description

a nasal mask

technical field

The utility model relates to the technical field of nasal filters, in particular to a nasal mask.

Background technique

At present, the urban air is full of dust, automobile exhaust and even industrial waste gas, which seriously affects people's breathing and threatens people's health. In order to ensure the cleanliness of breathing as much as possible, a number of masks and nasal masks with air filtering function have appeared in the existing technology. .

In the masks of the prior art, on the one hand, because the masks cover the mouth and nose, the scope of sealing between the mask and the surrounding of the mouth and nose increases, resulting in increased difficulty in sealing the mask, which in turn easily leads to poor sealing of the mask, causing the mask to purify the air. On the other hand, due to the large area covered by the mask, there is also more air covered by the mask, and the air covered by the mask is often the exhaust gas exhaled by the human body, which is not conducive to the user's breathing; on the other hand, due to There are individual differences in the face shape of different users. The mass-produced masks cannot well match the face shape of each user, which further increases the risk of poor sealing of the mask, and easily causes the user to wear uncomfortable. In addition, masks also affect the user's eating and language communication. Affect the normal life of users.

In the nasal mask of the prior art, due to the small individual differences of the nose, the sealing of the nasal mask is easier than that of the mask, and it is also more conducive to the good sealing of the nasal mask. However, the volume and surface area of the nasal mask are small. , and because the filtration rate of the air filter per unit area is limited, the smaller the filtration area of the air filter, the slower the filtration rate, which leads to the inability of the nasal mask to supply sufficient filtered air to the user, which is likely to cause difficulty in breathing for the user; in addition, The existing nasal mask has an excessively large pressing force around the nose, which also easily causes discomfort for the user to wear, which is not conducive to the user's long-term wearing.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a nasal mask with low sealing difficulty, comfortable wearing and smooth breathing.

In order to achieve the above purpose, the nasal mask provided by the present invention includes a mask body, a filter and a one-way exhaust valve, the mask body has a nasal cavity butt joint, and the opposite sides of the nasal cavity abutment part are respectively provided with cheek fitting parts; The respiratory airway, the nasal cavity docking part has a nasal cavity docking port, and the cheek matching part has a ventilation port, the respiratory airway is sealed and connected to the ventilation port and the nasal cavity docking port, the filter is detachably installed at the ventilation port, and the one-way exhaust valve is installed in the at the vent.

It can be seen from the above that through the structural design of the nasal mask in the present invention, the mask body of the present invention not only has a nasal cavity butting part but also has two cheek fitting parts, and the one-way exhaust valve and the filter are installed on the cheek fitting parts. , which is beneficial to increase the volume and area of the cover body, help to increase the size of the filter, and help to increase the rate of air filtration by the filter, so that the nasal mask can provide the user with sufficient filtered gas, which is beneficial to ensure that the user inhales In addition, it is beneficial to increase the size of the one-way exhaust valve, so that the gas discharged from the nasal cavity can be quickly and quickly discharged through the one-way exhaust valve, which is conducive to ensuring smooth breathing of the user; The contact area between the user and the nasal mask when wearing the nasal mask is increased, which is beneficial to improve the comfort of the user wearing the nasal mask; in addition, since the respiratory airway is arranged in the mask body, the nasal mask of the present invention requires a nasal cavity docking port in addition to In addition to sealing and docking with the user's nasal cavity, there is no need for the cheek fitting part to be sealed with the user's cheek, which is conducive to reducing the sealing difficulty of the nasal mask, not only is it not easy to cause air leakage, but also conducive to improving the sealing performance of the nasal mask and improving the user's wearing of the nasal mask. of comfort.

A preferred solution is that the nasal cavity docking part and the cheek fitting parts on both sides of the nasal cavity docking part form a C-shaped structure.

It can be seen from the above that the C-shaped structure is favorable for matching with the user's face.

A further solution is that a cushion pad is arranged on the cheek fitting part, and the cushion pad is arranged on the inner side of the C-shape of the cover body.

It can be seen from the above that this is beneficial to further improve the comfort of the user wearing the nasal mask.

A further solution is that the C-shaped inner side of the cheek fitting part has a convex ring, the outer peripheral wall of the convex ring is provided with a groove around the convex ring, or a groove is formed between the outer peripheral wall of the convex ring and the main body of the cheek fitting part. A groove around the convex ring; the buffer pad is in the shape of a bag, the buffer pad is detachably sleeved on the convex ring, and the bag mouth of the buffer cushion is sleeved in the groove.

It can be seen from the above that when the user wears the nasal mask of the present embodiment, the cushioning pad sleeved on the convex ring is in contact with the user's cheek, and the rest of the cheek fitting part is not in contact with the user's cheek, so as to avoid discomfort to the user due to large-area contact. In addition, it is beneficial to the stability of the contact position between the nasal mask and the user's cheek, and is conducive to improving the stability and comfort of the user wearing the nasal mask.

Another preferred solution is that the nasal cavity abutting part is affixed with a sealing nose pad, and the sealing nose pad is arranged around the nasal cavity abutting interface; and/or, the nasal cavity abutting part has a sealing and fitting ring part, and the sealing and fitting ring part surrounds the nasal cavity abutting opening. For one week, the thickness of the sealing ring portion is smaller than the thickness of the cavity wall of the breathing airway on the cheek fitting portion.

It can be seen from the above that this is beneficial to improve the sealing performance of the nasal mask, and is beneficial to improve the comfort of the user wearing the nasal mask of the present invention.

Another preferred solution is that the cover body is made of flexible material.

It can be seen from the above that when the user wears the nasal mask, the mask body can be deformed to better match the face shapes of different users, which is beneficial to improve the comfort of the user wearing the nasal mask.

Another preferred solution is that the nasal mask further includes an installation frame, the installation frame is installed at the air vent, the installation frame is sealed with the mask body, the installation frame has a suction hole and an exhaust hole, and the filter includes a filter. The filter sheet detachably covers the suction hole, the one-way exhaust valve includes an exhaust valve sheet, and the exhaust valve sheet covers the exhaust hole.

It can be seen from the above that the exhaust valve plate and the filter valve plate are arranged in the same air vent, which is beneficial to reduce the number of the mounting frame and reduce the installation difficulty of the exhaust valve plate and the filter plate.

A further solution is that each of the cheek fitting parts on both sides has an air vent, and each air vent is installed with a mounting frame in a one-to-one correspondence.

It can be seen from the above that the gas exhaled by the user through the nasal cavity to the respiratory airway can directly impact the exhaust valve sheet, which is conducive to the timely and smooth discharge of the user's exhaled gas; It is more beneficial to increase the cavity size of the suction hole, which is further beneficial to improve the filtration rate of the filter sheet.

A further solution is that the nasal mask further includes a first breathable cover and/or a second breathable cover, the first breathable cover is detachably fixed on the mounting frame, and the entire peripheral edge of the filter sheet is pressed against the cheek fitting portion. and the first venting cover; the second venting cover is detachably fixed on the mounting frame, the entire outer peripheral edge of the exhaust valve sheet is attached to the cheek fitting part, and the middle part of the exhaust valve sheet abuts on the cheek between the matching part and the second ventilating cover; the first ventilating cover and the second ventilating cover are arranged separately, or the first ventilating cover and the second ventilating cover are integrated.

Another preferred solution is that the two ends of the cover body along the C-shaped extension direction are respectively connected with ear straps; or the nasal mask further includes a headband, and the two ends of the headband are respectively connected to the two ends of the cover body along the C-shaped extension direction. end.

Description of drawings

Fig. 1 is the sectional view of the present utility model nasal mask;

Fig. 2 is the partial enlarged view of A place in Fig. 1;

Fig. 3 is the exploded view one of the present utility model nasal mask embodiment;

Fig. 4 is the exploded view two of the present utility model nasal mask embodiment;

5 is an exploded view of the air filter row assembly in the nasal mask embodiment of the present invention;

Fig. 6 is the structure diagram of the first ventilation cover in the embodiment of the nasal mask of the present invention;

7 is a structural diagram of the second ventilation cover in the embodiment of the nasal mask of the present invention;

Fig. 8 is the use state diagram of the present utility model nasal mask embodiment;

Fig. 9 is a use state diagram of the preferred embodiment of the nasal mask of the present invention.

The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

Detailed ways

Examples of nasal masks:

Referring to FIGS. 1 to 8 , the nasal mask of the present embodiment includes a C-shaped mask body 1 , two air filter exhaust assemblies 2 and two ear straps 3 , the mask body 1 is a silicone body, and the mask body 1 has a nasal cavity docking part 11 and two cheek fitting parts 12, the air filter and row assembly 2 includes a mounting frame 21, a filter sheet 22, a first ventilating cover 23, an exhaust valve sheet 24 and a second ventilating cover 25, two ear straps 3 and one One is connected to the two cheek fitting parts 12 ; along the C-shaped extension direction of the cover body 1 , the nasal cavity butting part 11 is connected between the two cheek fitting parts 12 , and the two ear straps 3 are located at both ends of the cover body 1 respectively .

Referring to FIGS. 1 and 3 , the nasal cavity docking portion 11 has a nasal cavity docking port 111 , and each of the two cheek mating portions 12 is provided with a ventilation port 121 . The openings 121 are both opened on the outer side of the C-shape of the cover body 1 , and the two ventilation openings 121 are both sealed and communicated through the breathing airway 13 inside the cover body 1 .

Referring to FIG. 1 , a sealing and fitting ring portion 112 protrudes toward the inner side of the C-shape on the nasal cavity docking portion 11 . Preferably, the thickness of the sealing and fitting ring portion 112 is smaller than the thickness of the cavity wall of the respiratory airway 13 on the cheek fitting portion 12, which is more conducive to the deformation of the sealing and fitting ring portion 112 after contacting the user's nose, and is more conducive to sealing and fitting The ring portion 112 better fits the user's nose. Optionally, a sealing nose pad (not shown in the figure) can also be attached to the nasal cavity docking portion 11, and the sealing nose pad is arranged around the nasal cavity docking interface 111, so that the nasal cavity docking interface 111 can also be sealed and docked with the user's nasal cavity. Purpose.

Referring to FIGS. 1 to 3 , the cover body 1 is provided with an annular installation groove around the ventilation opening 121 . At the corresponding vent 121, the outer peripheral edge of the mounting frame 21 is embedded in the corresponding annular installation groove, and the C-shaped inner side and the C-shaped outer side of the outer peripheral edge of the mounting frame 21 are in contact with the groove wall of the corresponding annular installation groove.

It should be noted that in this embodiment, the outer side of the C shape and the inner side of the C shape are the directions of the cover body 1, the inner side of the C shape is the side facing the user's head when the user wears the nasal mask, and the outer side of the C shape is the side that the user wears. The side of the nasal mask facing away from the user's head.

Please refer to FIGS. 3 to 6 , the mounting frame 21 has a suction hole 211 and an exhaust hole 212 , the suction hole 211 is a two-stage stepped hole, and the hole section of the suction hole 211 close to the breathing airway 13 is a small hole The hole section of the suction hole 211 away from the breathing airway 13 is a large hole section, the stepped surface 215 of the suction hole 211 faces away from the breathing airway 13 and faces the outside of the C shape, and the hole wall of the small hole section of the suction hole 211 There are two limit bars protruding from the upper cavity, and the two limit bars form a "cross"-shaped limit frame 213. The stepped surface 215 is in contact with each other, and the “cross”-shaped limiting frame 213 restricts the excessive deformation of the filter sheet 22 to the inner side of the C-shape.

Preferably, please refer to FIG. 5 , the C-shaped inner side of the "cross"-shaped limiter 213 is provided with abutting protrusions 2131, and the abutting protrusions 2131 abut against the C-shaped inner cavity wall of the respiratory airway 13, which is beneficial to Avoid the C-shaped inner cavity wall of the breathing airway 13 from being fitted with the C-shaped outer cavity wall of the breathing airway 13, and prevent the C-shaped inner cavity wall of the breathing airway 13 from blocking the ventilation port 121, which is beneficial to ensure the breathing airway 13 unobstructed.

Please refer to FIGS. 5 and 6 , the first vent cover 23 includes a first cover body 231 , a vent hole array is formed on the first cover body 231 , and the C-shaped inner main surface of the first cover body 231 protrudes toward the C-shaped inner side. There are first abutting protruding strips 232 and first buckles 233, the first abutting protruding strips 232 are matched with the large hole section of the suction hole 211, and the hole wall of the large hole section of the suction hole 211 is provided with a first clipping joint The hole groove 214, the first abutting protruding strip 232 is inserted into the large hole section of the suction hole 211, the first abutting protruding strip 232 abuts on the outer peripheral edge of the C-shaped outer main surface of the filter sheet 22, and the first buckle 233 is snapped into the first engaging hole groove 214 , and the filter piece 22 , the first ventilation cover 23 and the mounting frame 21 cooperate to form the filter 100 (please refer to FIG. 2 ).

When the filter sheet 22 needs to be replaced, the filter sheet 22 can be taken out by manually snapping off the first ventilation cover 23 from the mounting frame 21, and the first ventilation cover 22 can be taken out after replacing with a new filter sheet. Cover 23 is closed.

Please refer to FIG. 5 , the exhaust hole 212 is a three-stage stepped hole, the exhaust hole 212 has a first hole section, a second hole section and a third hole section, and the first hole section is located at the inner side of the C-shape of the exhaust hole 212 At one end, the third hole segment is located at the end of the exhaust hole 212 near the outer side of the C-shape. The contour shapes of the holes of the first hole segment, the second hole segment and the third hole segment are all rounded rectangles, and the holes of the first hole segment The size of the cavity profile is smaller than that of the second hole segment, the size of the cavity profile of the second hole segment is smaller than that of the third hole segment, and the mounting strip 217 protrudes from the hole wall of the first hole segment, The length direction of the mounting bar 217 is along the width direction of the rounded rectangle. The mounting bar 217 equally divides the cavity of the first hole segment into two small cavities. The mounting bar 217 protrudes to the outside of the C-shape with two mounting Protruding posts 219, two mounting protruding posts 219 are distributed along the length direction of the mounting strip 217, the outer edge of the C-shaped inner main surface of the exhaust valve sheet 24 is fitted to the stepped surface between the first hole section and the second hole section 216, two mounting holes 241 are opened on the exhaust valve sheet 24, and two mounting strips 217 are passed through the two mounting holes 241 in one-to-one correspondence, and the C-shaped inner main surface of the exhaust valve sheet 24 is connected to the mounting strip Body 217 abuts.

Please refer to FIGS. 5 and 7 , the second vent cover 25 includes a second cover body 251 , the second cover body 251 is provided with a vent hole 255 , and the C-shaped inner main surface of the second cover body 251 protrudes toward the C-shaped inner side. There is a second abutting protruding strip 252 , the second abutting protruding strip 252 is an annular protruding strip, the second abutting protruding strip 252 is matched with the third hole segment of the exhaust hole 212 , and the outer periphery of the second abutting protruding strip 252 is The wall is provided with a second snap protrusion 253, the hole wall of the third hole segment is provided with a second snap hole slot 218, the second contact protruding strip 252 is inserted into the cavity of the third hole segment, and the second snap hole is inserted into the cavity of the third hole segment. The connecting protrusion 253 is snapped into the second locking hole groove 218; the C-shaped inner main surface of the second cover body 251 protrudes toward the C-shaped inner side with two mounting column sleeves 254, and the two mounting column sleeves 254 are in one-to-one correspondence. Sleeve on the two mounting bosses 219, the two mounting column sleeves 254 abut on the main surface of the C-shaped outer side of the exhaust valve plate 24, the exhaust valve plate 24, the second ventilation cover 25 and the mounting frame 21 cooperate with each other The one-way exhaust valve 200 (please refer to FIG. 2 ) is formed.

The positional relationship between the exhaust valve sheet 24 and the filter sheet 22 on the same side of the cheek fitting portion 12 can be selected in a variety of ways, for example, the exhaust valve sheet 24 and the filter sheet 22 can be in the up-down direction (same as the user wearing state). The upper and lower direction) distribution, for example, the exhaust valve sheet 24 and the filter sheet 22 can also be distributed along the C-shaped extension direction of the cover body 1, preferably, please refer to FIGS. 1 to 4, on the same mounting frame 21, The exhaust valve sheet 24 and the filter sheet 22 are distributed along the C-shaped extension direction of the cover body 1 , and the filter sheet 22 is located on the side of the exhaust valve sheet 24 away from the nasal cavity docking portion 11 . That is, the suction hole 211 is located on the side of the exhaust hole 212 away from the nasal cavity docking portion 11 . In this way, the gas exhaled by the user to the respiratory airway 13 through the nasal cavity docking port 111 can directly impact the exhaust valve sheet 24, which is conducive to the timely and smooth discharge of the exhaled gas by the user; It is also more beneficial to increase the size of the cavity of the suction hole 211 , which is further beneficial to increase the filtration rate of the filter sheet 22 .

When using the nasal mask, the two ear straps 3 are respectively worn on the two ears of the user, the nasal cavity docking interface 111 is sealed with the user's nasal cavity, and the two cheek fitting parts 12 are respectively attached to the user's two cheeks; When the air is exhausted, the outer peripheral edge of the exhaust valve sheet 24 abuts against the step surface between the first hole section and the second hole section, the exhaust valve sheet 24 seals the exhaust hole 212, and the outside air passes through the first hole in turn. The hole array on the cover body 231, the filter sheet 22, the respiratory airway 13 and the nasal cavity docking port 111 are inhaled into the nasal cavity of the user; when the user exhales, the air exhaled from the nasal cavity forms a high pressure in the respiratory airway 13, and the high pressure causes the exhaust to be discharged. The outer peripheral edge of the air valve sheet 24 is separated from the step surface between the first hole section and the second hole section, and most of the exhaled gas is discharged through the nasal cavity docking port 111, the breathing airway 13, and the exhaust hole 212 in turn. Of course, there will be a small amount. Part of the gas is exhausted through the filter sheet 22 .

The mask body 1 of this embodiment not only has the nasal cavity butt joint part 11 but also has two cheek fitting parts 12 , and the exhaust valve piece 24 and the filter piece 22 are installed on the cheek fitting part 12 , which is beneficial to enlarge the mask body 1 It is beneficial to increase the main surface area of the filter sheet 22 and the pore size of the suction hole 211, which is beneficial to improve the rate of air filtration by the filter sheet 22, so that the nasal mask can provide the user with sufficient filtered gas , which is beneficial to ensure smooth inhalation of the user; in addition, it is beneficial to increase the main surface area of the exhaust valve sheet 24 and the cavity size of the exhaust hole 212, so that the gas discharged from the user's nasal cavity can pass through the exhaust hole 212 in a timely and rapid manner. Exhaust, which is beneficial to ensure that the user breathes smoothly.

Optionally, the first ventilating cover 23 and the second ventilating cover 25 may be integrated, and the first ventilating cover 23 and the second ventilating cover 25 may also be provided separately, and the first ventilating cover 23 and the second ventilating cover 25 The integration is beneficial to reduce the number of parts of the nasal mask, and is beneficial to simplify the structure and assembly process of the nasal mask.

In addition, since the respiratory airway 13 is provided in the mask body 1, the nasal mask of the present embodiment does not need the cheek fitting portion 12 to be sealed against the user's cheek except for the nasal cavity docking port 111 and the user's nasal cavity to be sealed and butted. The sealing area between the nasal mask and the user's face is small, which is beneficial to reduce the sealing difficulty of the nasal mask. It is beneficial to improve the comfort of the user wearing the nasal mask.

In the present embodiment, the exhaust valve plate 24 and the filter plate 22 are simultaneously arranged at the same air port 121, and one exhaust valve plate 24 and one filter plate 22 share the same mounting frame 21. On the one hand, this is beneficial to Reducing the number of air vents 121 on the cover body 1 is beneficial to reduce the difficulty of sealing the nasal mask; on the other hand, it is not necessary to separately set up a mounting frame for the exhaust valve sheet 24 and the filter sheet 22, which is beneficial to reducing the size of the nasal mask. The number of parts is conducive to improving the economy of the nasal mask, and is conducive to simplifying the assembling process of the nasal mask and reducing the difficulty of assembling and producing the nasal mask; optionally, ventilation can also be provided for the exhaust valve sheet 24 and the filter sheet 22 respectively. For the port 121, for example, two vents are provided on each cheek fitting portion 12. Among the two venting ports on the same cheek fitting portion 12, an exhaust valve sheet 24 is installed at one air port, and a filter sheet is installed at the other air port. 22. The purpose of the utility model can also be achieved.

Alternatively, please refer to FIG. 9 , the earband 3 can also be replaced with a headband 5, and the headband 5 is provided with two pieces, and the headband 5 or the earband 3 can be set with reference to the existing masks, face masks and nasal masks. The corresponding wearing method will not be repeated here.

Preferably, please refer to FIG. 1 to FIG. 4 , a sponge pad 4 is fixed on the inner side of the C-shape of the cheek matching part 12 , and the sponge pad 4 is used to provide a buffer between the cheek matching part 12 and the user's cheek, which is further conducive to improving the user's wearing of the present embodiment. To improve the comfort of the nasal mask, more preferably, a fixing ring body 122 protrudes from the cheek fitting part 12 to the C-shaped inner side, and a surrounding fixing ring body is formed between the outer peripheral wall of the fixing ring body 122 and the main body part of the cheek fitting part 12 122 a circumference of the groove, the sponge pad 4 is in the shape of a bag, the sponge pad 4 is sleeved on the fixed ring body 122, and the pocket of the sponge pad 4 is sleeved in the groove, so that when the user wears the nasal mask of this embodiment, The sponge pad 4 sleeved on the fixed ring body 122 is in contact with the user's cheek, and the rest of the cheek fitting portion 12 is not in contact with the user's cheek, which avoids discomfort to the user due to large-area contact, and is conducive to the stability of the contact position between the nasal mask and the user's cheek. , which is beneficial to improve the stability and comfort of the user wearing the nasal mask.

Finally, it should be emphasized that the above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement, etc. made should be included within the protection scope of the present utility model.

Claims (10)

1. a nasal mask is characterized in that: It comprises a cover body, a filter and a one-way exhaust valve, the cover body has a nasal cavity docking part, and the opposite sides of the nasal cavity docking part are respectively provided with cheek engaging parts; The mask body has a respiratory airway, the nasal cavity docking portion has a nasal cavity docking port, the cheek fitting portion has a ventilation port, the respiratory airway is sealed and communicates the ventilation port and the nasal cavity docking port, and the filter The valve is detachably mounted on the vent, and the one-way exhaust valve is mounted on the vent. 2. nasal mask according to claim 1, is characterized in that: The nasal cavity docking portion and the cheek fitting portions on both sides of the nasal cavity docking portion form a C-shaped structure. 3. nasal mask according to claim 2, is characterized in that: The cheek fitting part is provided with a buffer pad, and the buffer pad is arranged on the inner side of the C-shape of the cover body. 4. nasal mask according to claim 3, is characterized in that: The C-shaped inner side of the cheek fitting part has a convex ring, and the outer peripheral wall of the convex ring is provided with a groove around the convex ring, or the outer peripheral wall of the convex ring and the main body part of the cheek fitting part A groove around the convex ring is formed therebetween; The buffer pad is in the shape of a bag, the buffer pad is detachably sheathed on the convex ring, and the pocket of the buffer pad is sheathed in the groove. 5. nasal mask according to claim 1, is characterized in that: A sealing nose pad is affixed on the nasal cavity docking part, and the sealing nose cushion is arranged around the nasal cavity docking part; and/or, The nasal cavity abutting part has a sealing and fitting ring part, the sealing and fitting ring part is arranged around the nasal cavity butting port, and the thickness of the sealing and fitting ring part is smaller than the thickness of the respiratory airway on the cheek fitting part. Cavity wall thickness. 6. nasal mask according to claim 1, is characterized in that: The cover body is made of flexible material. 7. The nasal mask according to any one of claims 1 to 6, wherein: The nasal mask further includes an installation frame, the installation frame is installed at the air vent, the installation frame is sealed with the mask body, and the installation frame has a suction hole and an exhaust hole, The filter includes a filter sheet that detachably covers the suction hole, and the one-way exhaust valve includes an exhaust valve sheet that covers the exhaust hole. 8. nasal mask according to claim 7, is characterized in that: Each of the cheek fitting parts on both sides has an air vent, and each of the air vents is installed with the mounting shell in a one-to-one correspondence. 9. nasal mask according to claim 7, is characterized in that: The nasal mask further includes a first breathable cover and/or a second breathable cover, the first breathable cover is detachably fixed on the mounting frame, and the entire circumference of the filter sheet is extruded on the outer peripheral edge. between the cheek fitting part and the first breathable cover; The second ventilation cover is detachably fixed on the mounting frame, the entire outer peripheral edge of the exhaust valve sheet is attached to the cheek fitting portion, and the middle part of the exhaust valve sheet is in contact with between the cheek fitting part and the second breathable cover; The first ventilation cover and the second ventilation cover are provided separately, or the first ventilation cover and the second ventilation cover are integrated. 10. The nasal mask according to any one of claims 1 to 6, wherein: The two ends of the cover body along the C-shaped extension direction are respectively connected with ear straps; or the nasal mask further includes a headband, and the two ends of the headband are respectively connected to the two ends of the cover body along the C-shaped extension direction. both ends.

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