CN211912485U

CN211912485U - Protective mask

Info

Publication number: CN211912485U
Application number: CN202020388276.2U
Authority: CN
Inventors: 罗建荣; 张育平; 孙太喜
Original assignee: Shenzhen Btk Technology Co ltd
Current assignee: Shenzhen Btk Technology Co ltd
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-11-13
Anticipated expiration: 2030-03-24

Abstract

The utility model relates to a protective mask, which comprises an upper cover, a main body, a silica gel sealing piece, an inspiration filtering component, an expiration filtering component, an inspiration valve and an expiration valve, wherein the upper cover and the silica gel sealing piece are respectively arranged at the two sides of the main body; the upper cover is provided with an air inlet hole, the main body is provided with a through hole, the through hole is communicated with the air inlet hole, and the air suction filtering component is arranged between the air inlet hole and the through hole; the main body is also provided with an air outlet; the inhalation valve and the exhalation valve are fixed on the main body and respectively comprise a switch sheet and a fixed convex column, and the fixed convex column is fixedly connected with the switch sheet; the inhalation valve is arranged corresponding to the through hole, and the exhalation valve is arranged corresponding to the air outlet hole; the fixed convex column of the air suction valve is positioned on one side of the switch plate close to the air inlet; the expiration filter assembly is arranged corresponding to the air outlet and at least comprises medical velvet spraying cloth, and the expiration valve is positioned on one side of the expiration filter assembly far away from the air outlet. The protective mask can filter the inhaled gas and the exhaled gas, and cross infection is avoided.

Description

Protective mask

Technical Field

The utility model relates to a gauze mask field especially relates to a protective mask.

Background

The mask becomes a tight pin article in a short time, and when viruses are prevented, the existing mask provided with the breather valve only can realize unidirectional protection, so that the risk of cross infection exists, and therefore, the existing mask needs to be improved.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a protective mask for solving the problem that the conventional mask with a breathing valve only can realize one-way protection and has a risk of cross infection.

A protective mask comprises an upper cover, a main body, a silica gel sealing piece, an inspiration filtering component, an expiration filtering component, an inspiration valve and an expiration valve, wherein,

the upper cover and the silica gel sealing piece are respectively arranged on two sides of the main body and are fixed on the main body; the upper cover is provided with an air inlet hole, the main body is provided with a through hole, the through hole is communicated with the air inlet hole, and the air suction filtering assembly is arranged between the air inlet hole and the through hole; the main body is also provided with an air outlet;

the inhalation valve and the exhalation valve are fixed on the main body and respectively comprise a switch sheet and a fixed convex column, and the fixed convex column is fixedly connected with the switch sheet; the inhalation valve is arranged corresponding to the through hole, and the exhalation valve is arranged corresponding to the air outlet hole; the fixed convex column of the air suction valve is positioned on one side of the switch plate close to the air inlet hole, so that the switch plate prevents air flow from flowing out of the through hole; the fixed convex column of the expiratory valve is positioned on one side of the switch plate far away from the air outlet hole, so that the switch plate prevents airflow from flowing into the air outlet hole;

the expiration filter assembly is arranged corresponding to the air outlet and at least comprises medical velvet cloth, and the expiration valve is positioned on one side of the expiration filter assembly, which is far away from the air outlet.

In one embodiment, the main body is provided with a mounting position, the through hole is communicated with the mounting position, the mounting position is communicated with the air inlet hole, and the air suction filter assembly is accommodated in the mounting position;

the inner diameter of the through hole is smaller than or equal to that of the mounting position.

In one embodiment, the air suction device further comprises an air suction bracket, the air suction bracket is arranged corresponding to the through hole, and the air suction valve is fixed on the air suction bracket;

the air suction support is provided with air suction holes, the switch sheet of the air suction valve is arranged corresponding to the air suction holes and covers all the air suction holes in the air suction support, and the switch sheet of the air suction valve is positioned on one side, far away from the through hole, of the air suction support.

In one embodiment, the exhalation support is fixedly connected to the main body, an air flow channel is arranged in the exhalation support, the exhalation valve is arranged at one end of the air flow channel far away from the air outlet hole, and the exhalation filter assembly is arranged at one end of the air flow channel close to the air outlet hole.

In one embodiment, the exhalation support comprises a first support and a second support, the first support is fixedly connected to the second support, a through groove is formed in the first support, the second support covers the through groove from one end of the through groove, and the exhalation filter assembly is arranged on the second support and covers the through groove.

In one embodiment, an exhalation fixing frame is arranged at one end of the through groove, which is far away from the second support, the exhalation fixing frame is fixedly connected to the first support, and the exhalation valve is fixed on the exhalation fixing frame;

an exhalation hole is formed in the exhalation fixing frame, a switch sheet of the exhalation valve covers the exhalation hole, and the switch sheet is arranged on one side, close to the through groove, of the exhalation fixing frame.

In one embodiment, the outer diameter of the exhalation filter assembly is equal to or greater than the inner diameter of the through slots.

In one embodiment, the exhalation support is disposed at an angle relative to the main body.

In one embodiment, the upper cover is detachably and fixedly connected to the main body.

In one embodiment, a groove is arranged in the upper cover, when the upper cover is fixed on the main body, the upper cover and the main body surround to form a cavity, and the suction filter assembly is accommodated in the cavity;

the bottom of the groove is provided with an annular groove, the annular groove is arranged corresponding to the air inlet hole, and the installation position is opposite to the annular groove and is communicated with the annular groove.

Above-mentioned protective mask filters the gas of inhaling in the protective mask through setting up the inspiratory valve and the filtering component that breathes in. An exhalation valve and an exhalation filtering component are arranged to filter the exhaled air. And the inhaled gas can only enter from the inhalation valve, and the exhaled gas can only be exhaled from the exhalation valve, so that the gas flow sucked into the mask or the gas flow exhaled from the mask to the outside is filtered, and the aim of protection in two aspects is fulfilled.

Drawings

FIG. 1 is a schematic view of an exploded view of a protective mask according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a face shield according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of an upper cover of a face shield according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural view of a main body of a face shield according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of an inhalation/exhalation valve of a protective mask according to an embodiment of the present application;

FIG. 6 is a schematic cross-sectional view of an exhalation support of a face shield according to an embodiment of the present application;

fig. 7 is an exploded view of an exhalation support of a face shield according to an embodiment of the present application.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The protective face mask of each embodiment of the application can filter the airflow sucked into the mask or the airflow exhaled from the mask to the outside, thereby achieving the purpose of protection in two aspects.

The protective mask according to the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, a schematic structural diagram of a face shield 10 according to an embodiment of the present disclosure is exemplarily shown, where the face shield 10 includes an upper cover 110, a main body 120, a silicone sealing member 130, an inhalation filter assembly 140, and an exhalation filter assembly 150, the upper cover 110 and the silicone sealing member 130 are respectively disposed on two sides of the main body 120 and fixed to the main body 120, the inhalation filter assembly 140 is fixed to the main body 120 to filter air inhaled into the face shield, and the exhalation filter assembly 150 is fixed to the main body 120 to filter air flowing out of the face shield.

Referring to fig. 1 to 3, the upper cover 110 is provided with an air inlet hole 110a, the inhalation filter assembly 140 is disposed corresponding to the air inlet hole 110a, and air enters from the air inlet hole 110a, is filtered by the inhalation filter assembly 140, and then enters into the mask. In the embodiment shown in fig. 3, the air inlet holes 110a are a plurality of grid holes, so that the wide exposure of the suction filter assembly 140 can be avoided, the contamination of the suction filter assembly 140 can be avoided, and the suction filter assembly 140 can be protected; on the other hand, the appearance of the face shield 10 can be enhanced, making the product more marketable.

In one or more embodiments, the upper cover 110 is removably fixedly attached to the main body 120.

The upper cover 110 may be a concave plate, and a groove 110b is formed in the upper cover 110, when the upper cover 110 is fixed on the main body 120, the upper cover and the main body 120 surround to form a cavity, and the suction filter assembly 140 is accommodated in the cavity.

In the embodiment shown in fig. 3, the edge of the upper cover 110 is provided with a hook 112, the main body 120 is provided with a buckling position 121, and the hook 112 is buckled at the buckling position 121, so that the upper cover 110 is fixed on the main body 120. The hook 112 can be easily removed by this fixing method.

Referring to fig. 3, an annular groove 114 may be formed at the bottom of the groove 110b, and the annular groove 114 is disposed corresponding to the air inlet hole 110 a. Referring to fig. 4, the main body 120 may be provided with a mounting position 123, the mounting position 123 is disposed opposite to the annular groove 114 and is communicated with the annular groove 114, and the suction filter assembly 140 is accommodated in the mounting position 123. Thus, when the cover 110 is fixed to the body 120, the suction filter assembly 140 only needs to be placed in the mounting position 123, and can be clamped and fixed.

Referring to fig. 2, in one or more embodiments, a first clamping plate 116 is further disposed in the groove 110b, the first clamping plate 116 is disposed corresponding to the annular groove 114, and the first clamping plate 116 abuts against the suction filter element 140 to stably fix the suction filter element 140 in the mounting position 123, so as to prevent the suction filter element 140 from shaking. The first clamping plate 116 is provided with a through hole, so that air entering from the air inlet hole 110a is not blocked by the first clamping plate 116.

The bottom of the mounting location 123 extends at least partially through the body 120 to allow filtered air to enter the body 120 so that the filtered air can be inhaled when the respirator is worn by a person.

Referring to fig. 4, in one or more embodiments, the main body 120 is provided with a through hole 120a, the through hole 120a is communicated with the installation position 123, and the installation position 123 is communicated with the air inlet hole 110a, so that the suction filter assembly 140 is disposed between the air inlet hole 110a and the through hole 120 a. The inner diameter of the through hole 120a is equal to or less than the inner diameter of the mounting position 123, so that the suction filter module 140 having a sufficiently large size can be disposed to filter air, and the air can flow through the suction filter module 140 and then enter the main body 120 through the through hole 120 a.

Referring to fig. 1 and 2, the respirator further includes an air suction valve 161, the air suction valve 161 is fixed to the main body 120, the air suction valve 161 is opened when air flows into the main body 120 through the through hole 120a, and the air suction valve 161 is closed when air flows into the through hole 120a from the main body 120 to prevent air from flowing into the through hole 120 a. That is, the inhalation valve 161 allows only one-way airflow to pass, opening only during inhalation, and closing during exhalation.

When the suction valve 161 is of a proper size, the function of opening and closing the valve is facilitated, and the diameter of the suction valve 161 is greater than or equal to that of the through hole 120a, so that the through hole 120a has a smaller inner diameter than the mounting position 123, which facilitates the setting of the suction valve 161, and the mounting position 123 is adapted to the size of the annular groove 114, which facilitates the sufficient air intake.

Referring to fig. 1, 2 and 4, in some embodiments, the air suction device may further include an air suction bracket 170, the air suction bracket 170 is disposed corresponding to the through hole 120a, the air suction bracket 170 is provided with an air suction hole 170a to allow air to pass therethrough, and the air suction valve 161 is fixed to the air suction bracket 170. For example, the suction bracket 170 is further provided with a first fixing hole 170b, and the suction valve 161 is fitted and fixed to the first fixing hole 170 b. In a particular embodiment, the suction mount 170 may be integrally formed with the body 120.

Referring to fig. 5, the suction valve 161 includes a switch plate 16a and a fixing protrusion 16b, the fixing protrusion 16b is fixedly connected to the switch plate 16a, the switch plate 16a of the suction valve 161 is far away from the through hole relative to the fixing protrusion 16b, and is disposed corresponding to the suction holes 170a and covers all the suction holes 170a of the suction bracket 170, and the fixing protrusion 16b is fixed in the first fixing hole 170 b. Therefore, when air flows out of the through hole 120a and passes through the air hole, the switch piece 16a is impacted, the switch piece 16a is opened, and the air enters the main body 120; when air enters the direction of the through hole 120a from the inside of the main body 120, the air first impacts the switch piece 16a, so that the switch piece 16a is attached to the air suction bracket 170, and under the action of air pressure, the switch piece 16a seals the air suction hole 170a, so that air flow cannot enter the through hole 120a from the air suction hole 170a, and unidirectional air circulation is realized. In a specific embodiment, the switch plate 16a and the air suction bracket 170 are both circular, the fixing boss 16b is disposed at a center of the switch plate 16a, the first fixing hole 170b is disposed at a center of the air suction bracket 170, and the air suction holes 170a are uniformly distributed around the first fixing hole 170 b.

The fixing protrusion 16b may be provided with a locking protrusion 16c, and the suction bracket 170 is clamped between the locking protrusion 16c and the switch piece 16a, so that the fixing protrusion 16b is fixed on the suction bracket 170. This can prevent the suction valve 161 from falling off when the airflow hits the shutter piece 16 a.

Referring to fig. 1, 2 and 4, the main body 120 is further provided with an air outlet 120b, air in the main body 120 flows out from the air outlet 120b, and the exhalation filter assembly 150 is disposed corresponding to the air outlet 120 b. The respirator also includes an exhalation valve 163, the exhalation valve 163 is fixed to the main body 120 and is disposed corresponding to the air outlet 120b, and the exhalation valve 163 is located on the side of the exhalation filter assembly 150 away from the air outlet 120 b. The exhalation valve 163 is opened when the air in the main body 120 flows out of the exit hole 120b, and the exhalation valve 163 is closed when the air enters the main body 120 from the exit hole 120b to prevent the outside air from entering from the exit hole 120 b. An exhalation valve 163 is disposed on a side of the exhalation filter assembly 150 away from the exit aperture 120b to filter the gas flowing out of the main body 120.

In one or more embodiments, the exhalation support 180 is further included, the exhalation support 180 is fixedly connected to the main body 120, an air flow channel 180a is disposed in the exhalation support 180, the exhalation valve 163 is disposed at an end of the air flow channel 180a away from the air outlet 120b, and the exhalation filter assembly 150 is disposed at an end of the air flow channel 180a close to the air outlet 120 b. Therefore, the exhalation filter assembly 150 can filter the gas exhaled by the exhalation valve 163, so that the protection mask 10 filters the exhaled gas, thereby avoiding cross infection as the exhaled gas carries viruses into the air after the person wearing the protection mask 10 is infected with viruses.

Referring to fig. 6 and 7, the exhalation support 180 may include a first support 182 and a second support 184, the first support 182 is fixedly connected to the second support 184, a through slot 182a is disposed on the first support 182, the second support 184 covers the through slot 182a from one end of the through slot 182a, and the exhalation filter assembly 150 is disposed on the second support 184 and covers the through slot 182a, so that when air in the through slot 182a flows out, the air is filtered by the exhalation filter assembly 150.

An expiration fixing frame 190 is arranged at one end of the through groove 182a far away from the second support 184, the expiration fixing frame 190 is fixedly connected to the first support 182, and the expiration valve 163 is fixed on the expiration fixing frame 190.

The structure of the exhalation valve 163 is the same as that of the inhalation valve 161, and each exhalation valve 163 comprises a switch piece 16a and a fixed convex column 16b, and the difference is that the installation directions of the inhalation valve 161 and the exhalation valve 163 are opposite, the switch piece 16a of the inhalation valve 161 is positioned on one side of the inhalation bracket 170, which is far away from the through hole 120a, and the fixed convex column 16b is positioned on one side of the switch piece 16a, which is close to the air inlet 110 a; the switch piece 16a of the exhalation valve 163 is positioned at one side of the exhalation fixing frame 190 close to the air flow channel 180a, and the fixing convex column 16b is positioned at one side of the switch piece 16a far away from the air outlet 120b, so that the inhalation valve 161 is opened during inhalation, and the switch piece 16a of the inhalation valve 161 prevents the air flow from flowing out of the through hole; when the exhalation valve 163 is opened during exhalation, the switch piece 16a of the exhalation valve 163 prevents the airflow from flowing into the air outlet, so that the air inlet 110a and the air outlet 120b can only realize one-way air circulation.

The expiration fixing frame 190 is provided with expiration holes 190a, the switch piece 16a of the expiration valve 163 covers all the expiration holes 190a, the switch piece 16a is arranged on one side of the expiration fixing frame 190 close to the through groove 182a, and the fixing convex column 16b of the expiration valve 163 is fixed on the expiration fixing frame 190. For example, the exhale mount 190 is provided with a second fixing hole 190b, and the fixing boss 16b passes through the second fixing hole 190b, so that the exhale mount 190 is clamped between the clamping protrusion 16c and the switch plate 16 a.

The outer diameter of the exhalation filter assembly 150 may be greater than or equal to the inner diameter of the through slots 182a, so that the exhalation filter assembly 150 can completely cover the through slots 182a, thereby achieving a better filtering effect.

It will be appreciated that perforations 184a are provided in the second bracket 184 corresponding to the through slots 182a to allow airflow through the through slots 182 a.

In one or more embodiments, the exhalation support 180 is disposed obliquely with respect to the main body 120. For example, the exhalation support 180 may be positioned in a plane that is generally perpendicular to the flow of gas exhaled by the nose.

The silicone sealing member 130 is fixed on the main body 120 and seals the through hole 120a and the through groove 182a to achieve sufficient sealing, so that the air flow can only enter from the through hole and flow out from the air outlet hole 120 b. For example, the silicone seal 130 may be fixedly attached to the inhalation support 170 and the exhalation support 180 and form a sealing fit with the inhalation support 170 and the exhalation support 180. For example, the outer edges of the inhalation bracket 170 and the exhalation bracket 180 may be provided with fixing grooves 10a, and the silicone sealing member 130 is at least partially received in the fixing grooves 10a to achieve a better sealing.

The main body 120 may further include a fastening position (not shown), and the protective mask 10 may further include a hanging rope (not shown) which is assembled to the fastening position so that the protective mask 10 can be fixed to the head and cover the mouth and nose of the human body.

The air suction filter component 140 may include an activated carbon core, a breathable sponge and a medical spray-melt cloth, the breathable sponge and the medical spray-melt cloth are disposed on one side of the activated carbon core close to the air inlet 110a, the activated carbon core is used for adsorbing particles, and the medical spray-melt cloth is used for preventing oily particles from passing through. In a specific embodiment, both sides of the activated carbon core may be provided with a breathable sponge and medical spray-melt cloth to prevent failure of the suction filter assembly 140 during reverse installation.

The exhalation filter assembly 150 includes at least a medical drape to prevent oily particles from passing through for the purpose of preventing cross-infection when the wearer is carrying viruses.

The respirator filters the air sucked into the respirator 10 by providing the inhalation valve 161 and the inhalation filter assembly 140. An exhalation valve 163 and exhalation filter assembly 150 are provided to filter exhaled air. And the inhaled gas can only enter from the inhalation valve 161 and the exhaled gas can only be exhaled from the exhalation valve 163, so that both the gas flow inhaled into the mask and the gas flow exhaled from the outside of the mask are filtered, thereby achieving the purpose of dual-aspect protection.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A protective mask is characterized by comprising an upper cover, a main body, a silica gel sealing piece, an inspiration filtering component, an expiration filtering component, an inspiration valve and an expiration valve, wherein,

2. A protective mask according to claim 1, wherein the main body is provided with a mounting location, the through hole is communicated with the mounting location, the mounting location is communicated with the air inlet hole, and the suction filter assembly is accommodated in the mounting location;

3. A face shield according to claim 1, further comprising an inhalation bracket, wherein the inhalation bracket is disposed corresponding to the through hole, and the inhalation valve is fixed to the inhalation bracket;

4. The face shield according to claim 1, further comprising an exhalation support fixedly attached to the main body, wherein an air flow channel is disposed in the exhalation support, the exhalation valve is disposed at an end of the air flow channel away from the air outlet, and the exhalation filter assembly is disposed at an end of the air flow channel adjacent to the air outlet.

5. The face shield according to claim 4, wherein the breath support comprises a first support and a second support, the first support is fixedly connected to the second support, the first support is provided with a through slot, the second support covers the through slot from one end of the through slot, and the breath filter assembly is arranged on the second support and covers the through slot.

6. The face shield according to claim 5, wherein an exhalation fixing frame is arranged at one end of the through groove, which is far away from the second support, the exhalation fixing frame is fixedly connected to the first support, and the exhalation valve is fixed on the exhalation fixing frame;

7. The face shield of claim 5 wherein the exhalation filter assembly has an outer diameter that is equal to or greater than an inner diameter of the through slots.

8. A face shield according to claim 4, wherein the exhalation support is arranged obliquely to the main body.

9. A face shield according to claim 1, wherein the upper cover is removably fixedly attached to the main body.

10. A face shield according to claim 2, wherein a recess is provided in the upper cover, and when the upper cover is fixed to the main body, the upper cover and the main body enclose a cavity in which the inhalation filter assembly is accommodated;