CN213604571U - Protective mask - Google Patents
Protective mask Download PDFInfo
- Publication number
- CN213604571U CN213604571U CN202022035837.3U CN202022035837U CN213604571U CN 213604571 U CN213604571 U CN 213604571U CN 202022035837 U CN202022035837 U CN 202022035837U CN 213604571 U CN213604571 U CN 213604571U
- Authority
- CN
- China
- Prior art keywords
- air inlet
- air outlet
- air
- shell
- cotton
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000001681 protective effect Effects 0.000 title claims abstract description 31
- 230000001815 facial effect Effects 0.000 claims abstract description 21
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 14
- 229920000742 Cotton Polymers 0.000 claims description 64
- 239000007788 liquid Substances 0.000 claims description 61
- 238000009434 installation Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 210000000214 mouth Anatomy 0.000 description 5
- 230000000241 respiratory effect Effects 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 201000003152 motion sickness Diseases 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
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- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model discloses a protective mask, including the main casing body, admit air subassembly, the subassembly of giving vent to anger and be flaky preceding shell, preceding shell with the main casing body encloses into breathing space, and breathing space includes that left side is regional, middle zone and right side are regional, and the subassembly of admitting air and the subassembly setting of giving vent to anger are on preceding shell, set up on the preceding shell with the inlet port and the venthole that admit air subassembly and the position of the subassembly of giving vent to anger correspond respectively, and middle zone supplies the oronasal of the person of dress to put into, and in the subassembly of admitting air and the subassembly of giving vent to anger, a subassembly is in the left side region, and another kind of subassembly is in the. When wearing the utility model discloses a protective facial mask, whole protective facial mask's focus all more is close to the face of wearer, is favorable to improving and dresses the experience and feels.
Description
Technical Field
The utility model relates to a protective articles especially relate to a protective facial mask.
Background
The masks can be divided into a sheet type mask and a three-dimensional structured mask (i.e., a non-sheet mask which cannot be folded, also called a face mask) according to the shape of the mask, and the flat type mask, the folding type mask and the cup type mask all belong to the sheet type mask, while the gas protection mask which is commonly used as a labor protection product belongs to the three-dimensional structured mask. Generally, the face contact part of the mask with a three-dimensional structure is made of soft rubber, and the sealing performance after wearing the mask is superior to that of a sheet type mask.
Many spatial structure gauze masks all dispose the breather valve, filter the box, still can dispose the fan for the increase air output even, at present, these spatial structure's gauze mask is usually including the main casing body, the connecting piece, admit air subassembly and the subassembly of giving vent to anger, the integrative front end that sets up with the main casing body of connecting piece, and admit air subassembly and the front end at connecting portion are all installed to the subassembly of giving vent to anger, because the filter box thickness of the subassembly of giving vent to anger/all is bigger, admit air the subassembly, the dead weight of the subassembly of giving vent to anger is great, after the dress, make the focus of whole gauze mask too keep away from facial, the moment that its dead weight produced is.
Disclosure of Invention
The utility model discloses a main aim at provides a protective facial mask to shorten the focus of gauze mask and facial distance, promote to dress and experience the sense.
In order to achieve the above objects and other related objects, the technical solution of the present invention is as follows:
a protective mask comprises a main shell, an air inlet component and an air outlet component, wherein when the protective mask is worn, the main shell is in contact with the face of a wearer, the protective mask further comprises a flaky front shell, the front shell is installed at the front end of the main shell, a breathing space is enclosed by the front shell and the main shell and comprises a left area, a middle area and a right area, the air inlet component and the air outlet component are arranged on the front shell, an air inlet hole corresponding to the position of the air inlet component is formed in the front shell, an air outlet hole corresponding to the position of the air outlet component is formed in the front shell, the middle area is used for the entrance nose of the wearer to be placed in,
wherein the air inlet component is located in a left region and the air outlet component is located in a right region; or the air inlet component is in the right side region and the air outlet component is in the left side region.
Optionally, the main casing body includes facial contact site and installation frame portion, installation frame portion is in the front end of facial contact site, preceding shell an organic whole sets up the front end of installation frame portion, wherein, facial contact site is fillet triangle frame form, installation frame portion is fillet four sides frame, facial contact site with circular arc transition between the installation frame portion.
Optionally, the front shell is arc-shaped.
Optionally, the air intake assembly includes an air intake cover, an air intake filter cotton and an air intake valve, the air intake filter cotton is located in the air intake cover, the air intake cover is located on the inner side of the front shell, the position of the air intake filter cotton corresponds to the position of the air intake hole, and the air intake valve is installed on the air intake cover;
the subassembly of giving vent to anger includes the gas outlet cover, gives vent to anger and filters cotton and air outlet valve, it is in to give vent to anger to filter cotton in the gas outlet cover, it is in to give vent to anger the shroud the inboard of front shell, just give vent to anger the position of filtering the cotton with the position of venthole corresponds, the air outlet valve is installed give vent to anger and cover last.
Optionally, the inlet port is the bar hole, each the long limit of inlet port extends from top to bottom.
Optionally, the air inlet assembly comprises air inlet liquid storage filter cotton, an air inlet cotton mounting shell and a liquid storage tank, the liquid storage tank is arranged above the air inlet cotton mounting shell, a liquid outlet is arranged at the bottom of the liquid storage tank, a liquid inlet for liquid guided out by the liquid outlet to enter the air inlet cotton mounting shell is arranged at the top of the air inlet cotton mounting shell,
the side of cotton installation shell of admitting air still is provided with air inlet and rear side air inlet through hole, the air inlet sets up the front side of cotton installation shell of admitting air, rear side air inlet through hole sets up the rear side of cotton installation shell of admitting air, the air inlet covers all the inlet port.
Optionally, an observation area for observing the liquid level in the liquid storage tank is arranged on the front shell, the observation area is made of transparent materials, and the liquid storage tank is made of transparent or semitransparent materials.
Optionally, a hollow part for observing the liquid level in the liquid storage tank is arranged on the front shell, a filling piece is detachably filled in the hollow part, the filling piece is made of soft rubber or silica gel materials, and the liquid storage tank is made of transparent or semitransparent materials.
Optionally, the air outlet assembly comprises an air outlet cover, an air outlet valve, a fan and air outlet filter cotton, the air outlet filter cotton is located in the air outlet cover, the air outlet cover is located on the inner side of the front shell, the position of the air outlet filter cotton corresponds to the position of the air outlet hole, and the air outlet valve and the fan are installed on the air outlet cover.
Optionally, the space in the air outlet cover is divided into an upper space and a lower space, the upper space and the lower space are filled with the air outlet filter cotton, the air outlet valve is installed on the air outlet cover and corresponds to the upper space, and the fan is installed on the air outlet cover and corresponds to the lower space, so that the fan is located below the air outlet cover.
The utility model discloses an among the protective facial mask, enclose into breathing space between front surface shell and the main casing body, the subassembly of admitting air all is in breathing space with the subassembly of giving vent to anger, and when dressing, whole protective facial mask's focus all more is close to the face of wearer, is favorable to improving and dresses the experience and feels.
Drawings
Fig. 1 is a schematic view showing an exemplary three-dimensional structure of a protective mask according to the present invention;
FIG. 2 is a schematic three-dimensional view of the protective mask of FIG. 1 from another perspective;
FIG. 3 is an exploded view of the respirator of FIG. 1;
fig. 4 is a schematic view of another exemplary three-dimensional structure of the protective mask of the present invention;
FIG. 5 is a schematic three-dimensional view of the protective mask of FIG. 4 from another perspective;
fig. 6 shows an exploded view of fig. 4.
The description of reference numerals in the examples includes:
a main casing 1, a face contact portion 11, and a mounting frame portion 12;
the air inlet component 2, an air inlet cover 211, an air inlet filter cotton 212, an air inlet valve 213, an air inlet liquid storage filter cotton 221, an air inlet cotton installation shell 222, a liquid storage tank 223, a liquid outlet 223a, a liquid inlet 222a, a front side air inlet window 222b and a rear side air inlet through hole 222 c;
the air outlet component 3, an air outlet cover 31, air outlet filter cotton 32, an air outlet valve 33, a fan 34, an upper space 3a and a lower space 3 b;
a front shell 4, an air inlet 401, an air outlet 402 and a hollow part 403;
a filler member 5;
respiratory space a, left region a1, middle region a2, right region A3.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
It is to be understood that the present invention may 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, and will fully convey the scope of the invention to those skilled in the art. In the drawings, like reference numerals refer to like elements throughout.
For convenience of understanding, the orientation definitions of "left", "right", "upper", "lower", "front", "rear", and the like in the following embodiments are limited to the orientation of the wearer after wearing the protective mask, and are not otherwise limited.
Referring to the figures in combination, referring to fig. 1 to 6 in combination, the present invention provides a protective mask, comprising a main housing 1, an air inlet module 2 and an air outlet module 3, wherein when worn, the main housing 1 contacts with the face of the wearer, the protective mask further comprises a sheet front housing 4, the front housing 4 is mounted at the front end of the main housing 1, the front housing 4 and the main housing 1 enclose a breathing space a, the breathing space a comprises a left area a1, a middle area a2 and a right area A3, the air inlet module 2 and the air outlet module 3 are disposed on the front housing 4, the front housing 4 is provided with an air inlet 401 corresponding to the position of the air inlet module 2, the front housing 4 is provided with an air outlet 402 corresponding to the position of the air outlet module 3, and the middle area a2 is used for the nose and mouth of the wearer to insert, wherein the air inlet assembly 2 is located in the left region a1, and the air outlet assembly 3 is located in the right region A3.
In practical implementation, the air inlet module 2 may be located in the right region A3, and the air outlet module 3 may be located in the left region a 1.
When wearing, the facial and main casing body 1 laminating of wearer, during the oronasal part of wearer stretched into respiratory space A, and was located respiratory space A's middle zone A2, and air exchange is carried out outside air exchange to respiratory space A and the gauze mask to subassembly 2 and the subassembly 3 of giving vent to anger of admitting air. The utility model discloses in, when dressing, be equivalent to air intake component 2, the oronasal part of wearer, air outlet assembly 3 and distribute side by side and be in the facial front side of wearer, whole protective facial mask's focus is closer to wearer's face, has improved the wearing comfort level.
In some embodiments, the main housing 1 includes a face contact portion 11 and a mounting frame portion 12, the mounting frame portion 12 is located at a front end of the face contact portion 11, and the front housing 4 is integrally disposed at a front end of the mounting frame portion 12, wherein the face contact portion 11 is in a shape of a rounded triangular frame, the mounting frame portion 12 is in a shape of a rounded four-sided frame, and the face contact portion 11 and the mounting frame portion 12 are in a circular arc transition.
When the respirator is worn, most of the face of a wearer is positioned in the face contact part 11 in the breathing space A, the nose and the mouth may partially extend into the mounting frame part 12 due to the fact that the nose and the mouth protrude out of the face, and the air inlet assembly 2 and the air outlet assembly 3 are also positioned in the mounting frame part 12, so that the air inlet assembly 2 and the air outlet assembly 3 are arranged on the left side and the right side of the nose and mouth.
In some embodiments, the front shell 4 is arc-shaped and sheet-shaped (the center of curvature of each part of the front shell 4 is located on the side of the front shell 4 facing the main shell 1, that is, the side where the wearer is located), so that the center of gravity of the air inlet component 2 and the air outlet component 3 can be closer to the face of the wearer, which is beneficial to further improving the wearing comfort.
In some embodiments, referring to fig. 1 to 3 in combination, the air intake assembly 2 comprises an air intake cover 211, an air intake filter cotton 212 and an air intake valve 213, the air intake filter cotton 212 is located in the air intake cover 211, the air intake cover 211 covers the inner side of the front shell 4, the position of the air intake filter cotton 212 corresponds to the position of the air intake hole 401, and the air intake valve 213 is mounted on the air intake cover 211;
the air outlet component 3 comprises an air outlet cover 31, air outlet filter cotton 32 and an air outlet valve 33, the air outlet filter cotton 32 is arranged in the air outlet cover 31, the air outlet cover 31 covers the inner side of the front shell 4, the position of the air outlet filter cotton 32 corresponds to the position of the air outlet hole 402, and the air outlet valve 33 is arranged on the air outlet cover 31.
Specifically, in some embodiments, referring to fig. 1 to 3, the air inlet holes 401 are strip-shaped holes, and a long side of each air inlet hole 401 extends from top to bottom. For the same size area, the ventilation capacity of the strip-shaped holes is larger than that of the common round holes due to the influence of the hole spacing. Of course, in practical implementation, the air inlet holes 401 may be circular holes, square holes, triangular holes, etc.
Specifically, in some embodiments, referring to fig. 1 to 3 in combination, a plurality of pressing strips 211a for pressing the outlet filter cotton 32 against the front cover are distributed in the inlet cover 211, the pressing strips 211a are arranged at intervals and avoid the position of the inlet hole 401, and each pressing strip extends from top to bottom.
In other embodiments, referring to fig. 4 to 6 in combination, the air intake assembly 2 includes an intake air storage filter cotton 221, an intake air cotton installation housing 222, and a liquid storage tank 223, the liquid storage tank 223 is located above the intake air cotton installation housing 222, a liquid outlet 223a is arranged at the bottom of the liquid storage tank 223, and a liquid inlet 222a for allowing liquid guided out by the liquid outlet 223a to enter the intake air cotton installation housing 222 is arranged at the top of the intake air cotton installation housing 222; the side surface of the air inlet cotton mounting shell 222 is further provided with a front air inlet window 222b and a rear air inlet through hole 222c, the front air inlet window 222b is arranged on the front side of the air inlet cotton mounting shell 222, the rear air inlet through hole 222c is arranged on the rear side of the air inlet cotton mounting shell 222, and the front air inlet window 222b covers all the air inlet holes 401.
In the using process, the liquid storage tank 223 can store a sterilization liquid and an oral cavity refreshing liquid, and can also be filled with carsickness drugs (liquid), so that a wearer can add corresponding liquid into the liquid storage tank 223 according to the requirement; when the breathing device is used, liquid in the liquid storage tank 223 permeates into the air inlet liquid storage filter cotton 221, outside air enters the breathing space A after entering the air inlet 401 of the front shell 4, the front side air inlet window 222b of the air inlet cotton installation shell 222, the air inlet liquid storage filter cotton 221 and the rear side air inlet through hole 222c of the air inlet cotton installation shell 222, and the liquid in the air inlet liquid storage filter cotton 221 is gasified under the action of airflow and is brought into the breathing space A.
In some embodiments, referring to fig. 4 to 6 in combination, a hollow portion 403 for observing the liquid level in the liquid storage tank 223 is disposed on the front shell 4, a filling member 5 is detachably filled in the hollow portion 403, the filling member 5 is made of soft glue or silica gel, and the liquid storage tank 223 is made of transparent or semitransparent material. The user can take off filler 5 regularly and observe the liquid level of liquid reserve tank 223, and this filler 5 adopts flexible glue or silica gel material to make filler 5 can take place certain deformation according to the fretwork shape, makes fretwork portion 403 department leakproofness enough good, and can not influence the filter effect. In some other embodiments, a viewing area (not shown) for viewing the liquid level in the liquid storage tank 223 is disposed on the front shell 4, the viewing area is made of transparent material, and the liquid storage tank 223 is made of transparent or semitransparent material. This arrangement of the viewing area facilitates monitoring of the liquid level in the reservoir 223 at any time to replenish the reservoir 223 with liquid in a timely manner.
In some embodiments, referring to fig. 4 to 6 in combination, the air outlet assembly 3 includes an air outlet cover 31, an air outlet valve 33, a fan 34 and an air outlet filter cotton 32, the air outlet filter cotton 32 is located in the air outlet cover 31, the air outlet cover 31 covers the inner side of the front shell 4, the position of the air outlet filter cotton 32 corresponds to the position of the air outlet 402, and the air outlet valve 33 and the fan 34 are both mounted on the air outlet cover 31.
In some embodiments, referring to fig. 4 to 6 in combination, the space inside the outlet housing 31 is divided into an upper space 3a and a lower space 3b, the outlet filter cotton 32 fills the upper space 3a and the lower space 3b, the outlet valve 33 is installed on the outlet housing 31 at a region corresponding to the upper space 3a, and the fan 34 is installed on the outlet housing 31 at a region corresponding to the lower space 3b, such that the fan 34 is located below the outlet housing 31.
This kind of mode of arranging the installation from top to bottom of air outlet valve 33 and fan 34 for air outlet assembly 3's whole thickness can diminish, is favorable to the focus to the facial removal of wearer, improves and dresses the experience, and in the use, the carbon dioxide content of wearer's exhalation increases, and carbon dioxide sinks to the position that respiratory space A leaned on easily, arranges fan 34 in air outlet valve 33's below, is favorable to making the air of below rise to discharge valve discharge fast along with the air current.
In the description of the invention, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, components, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, and/or groups thereof.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a protective facial mask, includes the main casing body, admits air the subassembly and gives vent to anger the subassembly, when dressing, the main casing body contacts its characterized in that with wearer's face: the breathing device is characterized by further comprising a flaky front shell, wherein the front shell is arranged at the front end of the main shell body, a breathing space is enclosed by the front shell and the main shell body, the breathing space comprises a left area, a middle area and a right area, the air inlet assembly and the air outlet assembly are arranged on the front shell, an air inlet hole corresponding to the position of the air inlet assembly is formed in the front shell, an air outlet hole corresponding to the position of the air outlet assembly is formed in the front shell, the middle area is used for the nose and mouth of a wearer to be put in,
wherein the air inlet component is located in a left region and the air outlet component is located in a right region; or the air inlet component is in the right side region and the air outlet component is in the left side region.
2. The protective mask according to claim 1, characterized in that: the main casing body includes facial contact site and installation frame portion, installation frame portion is in the front end of facial contact site, preceding shell an organic whole sets up installation frame portion's front end, wherein, facial contact site is fillet triangle frame form, installation frame portion is fillet four sides frame, facial contact site with circular arc transition between the installation frame portion.
3. The protective mask according to claim 2, characterized in that: the front shell is arc-shaped and flaky.
4. The protective mask according to claim 1, characterized in that:
the air inlet assembly comprises an air inlet cover, air inlet filter cotton and an air inlet valve, the air inlet filter cotton is positioned in the air inlet cover, the air inlet cover is arranged on the inner side of the front shell, the position of the air inlet filter cotton corresponds to that of the air inlet hole, and the air inlet valve is arranged on the air inlet cover;
the subassembly of giving vent to anger includes the gas outlet cover, gives vent to anger and filters cotton and air outlet valve, it is in to give vent to anger to filter cotton in the gas outlet cover, it is in to give vent to anger the shroud the inboard of front shell, just give vent to anger the position of filtering the cotton with the position of venthole corresponds, the air outlet valve is installed give vent to anger and cover last.
5. The protective mask of claim 3 wherein said air inlet holes are strip shaped holes, the long side of each said air inlet hole extending from top to bottom.
6. The protective mask according to claim 1, characterized in that:
the air inlet assembly comprises air inlet liquid storage filter cotton, an air inlet cotton mounting shell and a liquid storage tank, the liquid storage tank is positioned above the air inlet cotton mounting shell, a liquid outlet is arranged at the bottom of the liquid storage tank, a liquid inlet for liquid led out by the liquid outlet to enter the air inlet cotton mounting shell is arranged at the top of the air inlet cotton mounting shell,
the side of cotton installation shell of admitting air still is provided with air inlet and rear side air inlet through hole, the air inlet sets up the front side of cotton installation shell of admitting air, rear side air inlet through hole sets up the rear side of cotton installation shell of admitting air, the air inlet covers all the inlet port.
7. The protective mask according to claim 6, characterized in that: the front shell is provided with an observation area for observing the liquid level in the liquid storage tank, the observation area is made of transparent materials, and the liquid storage tank is made of transparent or semitransparent materials.
8. The protective mask according to claim 6, characterized in that: the front shell is provided with a hollow part for observing the liquid level in the liquid storage tank, the hollow part is filled with a detachable filling piece, the filling piece is made of soft rubber or silica gel, and the liquid storage tank is made of transparent or semitransparent material.
9. The protective mask according to claim 6, characterized in that: the air outlet assembly comprises an air outlet cover, an air outlet valve, a fan and air outlet filter cotton, the air outlet filter cotton is located in the air outlet cover, the air outlet cover is arranged on the inner side of the front shell, the position of the air outlet filter cotton corresponds to the position of the air outlet hole, and the air outlet valve and the fan are installed on the air outlet cover.
10. The protective mask according to claim 9, characterized in that: the space in the air outlet cover is divided into an upper space and a lower space, the upper space and the lower space are filled with the air outlet filter cotton, the air outlet valve is installed on the air outlet cover and corresponds to the upper space, and the fan is installed on the air outlet cover and corresponds to the lower space, so that the fan is located below the air outlet cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022035837.3U CN213604571U (en) | 2020-09-16 | 2020-09-16 | Protective mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022035837.3U CN213604571U (en) | 2020-09-16 | 2020-09-16 | Protective mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213604571U true CN213604571U (en) | 2021-07-06 |
Family
ID=76649656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022035837.3U Expired - Fee Related CN213604571U (en) | 2020-09-16 | 2020-09-16 | Protective mask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213604571U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115845285A (en) * | 2022-12-22 | 2023-03-28 | 惠州市林菲宇电子有限公司 | Filtering structure and electric mask |
-
2020
- 2020-09-16 CN CN202022035837.3U patent/CN213604571U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115845285A (en) * | 2022-12-22 | 2023-03-28 | 惠州市林菲宇电子有限公司 | Filtering structure and electric mask |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210706 |