CN212994526U - Shell of high protective mask - Google Patents
Shell of high protective mask Download PDFInfo
- Publication number
- CN212994526U CN212994526U CN202020286961.4U CN202020286961U CN212994526U CN 212994526 U CN212994526 U CN 212994526U CN 202020286961 U CN202020286961 U CN 202020286961U CN 212994526 U CN212994526 U CN 212994526U
- Authority
- CN
- China
- Prior art keywords
- air outlet
- shell
- air
- guide channel
- cavity
- 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
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 15
- 238000001914 filtration Methods 0.000 claims abstract description 19
- 230000003139 buffering effect Effects 0.000 claims abstract description 15
- 238000002955 isolation Methods 0.000 claims description 20
- 238000005192 partition Methods 0.000 claims description 16
- 230000001815 facial effect Effects 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 31
- 230000029058 respiratory gaseous exchange Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 208000023504 respiratory system disease Diseases 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010020772 Hypertension Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 208000019622 heart disease Diseases 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 230000003612 virological effect Effects 0.000 description 1
Images
Abstract
The utility model provides a shell of a high protective mask, wherein an air inlet cavity and an air outlet buffer guide channel are arranged in the shell, the air inlet cavity is separated from the air outlet buffer guide channel, and the air outlet buffer guide channel comprises an air outlet buffer cavity and an air outlet guide channel; an air inlet is arranged on the shell; the air outlet guide channel extends from the air outlet buffer cavity to the side edge of the shell, and the extending tail end of the air outlet guide channel is an air outlet; an air outlet filtering device is arranged on the shell and positioned between the air outlet buffer cavity and the air outlet guide channel; the space of the air inlet cavity is larger than that of the air outlet buffer cavity; in the structure, the air inlet cavity is separated from the air outlet buffering guide channel; the gas of exhalation is through giving vent to anger the cushion chamber buffering, filters the gas of exhalation through the filter equipment of giving vent to anger at last, like this, reduces during the droplet in the gas of exhalation enters into the air, and barrier propterty is good.
Description
Technical Field
The utility model relates to a gauze mask, concretely relates to high protective facial mask's shell.
Background
Most of the masks on the market at present improve the sealing performance for better cold protection, heat preservation, dust resistance and bacteria prevention, but not only reduce the ventilation performance of the masks, but also increase the breathing resistance. Moreover, these masks all have only a cavity to cause expired gas and inhale gaseous mixing, let the person of wearing when breathing greatly reduced the oxygen inspiration volume, not only reduced the comfort level, still influenced health. If the wearer himself suffers from some bacterial or viral respiratory diseases, the wearer needs to be treated, and even repeatedly infects the wearer if wearing the mask, so that the recovery is affected. Therefore, doctors believe that respiratory disease patients, respiratory sensitive people, heart disease patients, hypertension patients, pregnant women and other special people are not suitable for wearing the mask, and even ordinary healthy people are not suitable for wearing the mask during exercise. Some breathing masks with breathing valves are invented, and although the breathing resistance is reduced compared with the common masks, the breathing mask does not fundamentally improve the mixing of breathing gas and inspiratory gas, is inconvenient to clean and is not suitable for being used repeatedly.
The patent document with the Chinese application number of 201510586552.X and the publication number of 2015.12.9 discloses a convenient breathing mask, which comprises a mask body, wherein a left ear rope sleeve and a right ear rope sleeve are fixed on two sides of the mask body, an inner cup is arranged on the inner side of the mask body, filter cotton is arranged in the inner cup, an exhaust pipe is connected with the filter cotton, a fixing nut is arranged on the exhaust pipe and fixed at the center of the mask body, the exhaust pipe extends out of the mask body, and an exhaust pipe is arranged at the outer end of the exhaust pipe
The hole, the blast pipe embeds has discharge valve, installs the air discharge valve on the discharge valve, and one side of inner cup is fixed with the one end of intake pipe, installation admission valve in the intake pipe bottom, and the outer end of intake pipe stretches out the outside of the gauze mask body, and the outer port of intake pipe is built-in to have active carbon. The air inlet valve is a one-way valve which can only inlet but not outlet, and the exhaust valve is a one-way valve which can only outlet but not inlet.
When the breathing mask is used for exhausting, the air can reach the exhaust valve to be exhausted through the filter cotton and the exhaust pipe, and the distance between the exhaust valve and the inner cover cup is long; the stay time of the discharged gas in the exhaust pipe is long, so that the discharged gas is easy to store in the exhaust pipe; meanwhile, the air inlet pipe of the mask is communicated with the exhaust pipe, so that gas which stays in the exhaust pipe and is not discharged in time can be sucked into a human body during air suction; carbon dioxide is inhaled during inspiration, so that less oxygen is inhaled during inspiration, and further discomfort is caused to a human body; meanwhile, the mask is only provided with one air inlet pipe, so that the inhaled oxygen is effective during air suction; the use scene of this gauze mask receives the restriction like this, can lead to breathing not smooth and easy when carrying out physical labor when wearing this gauze mask.
In addition, the air outlet of the existing mask is basically in a straight-line type, so that spray and the like generated by human body exhalation easily enter the air, and are unhealthy for other people.
Disclosure of Invention
The utility model provides a path and the length of giving vent to anger, the high protective facial mask's of air in the air of discharging after filtering the gas of exhalation shell.
In order to achieve the above purpose, the technical scheme of the utility model is that: a shell of a high-protection mask is provided with an air inlet cavity and an air outlet buffering guide channel, wherein the air inlet cavity is separated from the air outlet buffering guide channel, and the air outlet buffering guide channel comprises an air outlet buffering cavity and an air outlet guide channel; an air inlet is arranged on the shell; the air outlet guide channel extends from the air outlet buffer cavity to the side edge of the shell, and the extending tail end of the air outlet guide channel is an air outlet; an air outlet filtering device is arranged on the shell and positioned between the air outlet buffer cavity and the air outlet guide channel; the space of the air inlet cavity is larger than that of the air outlet buffer cavity.
According to the health safety protection mask with the structure, the outside air enters the air inlet cavity from the air inlet, and the air in the air inlet cavity enters the mask. The gas of human body exhalation is to giving vent to anger the cushion chamber in, cushions the detention to the gas of exhalation through the cushion chamber of giving vent to anger, then filters the back through the filter equipment of giving vent to anger and enters into the air under the guide effect of the direction passageway of giving vent to anger. In the structure, the air inlet cavity is separated from the air outlet buffering guide channel; the gas of exhalation is through giving vent to anger the cushion chamber buffering, filters the gas of exhalation through the filter equipment of giving vent to anger at last, then changes to the gas of exhalation and prolongs the passageway of giving vent to anger through the direction passageway of giving vent to anger, like this, cushion and filter the gas of exhalation to change the gaseous route of exhalation and length, reduce the droplet in the gas of exhalation and enter into the air, can carry out effectual protection to other people, consequently, this gauze mask uses healthy, safety, barrier propterty is good.
Furthermore, a partition plate is arranged on the inner side of the shell, and an air outlet buffer guide channel is formed in the partition plate; the isolating plate comprises an upper isolating plate and a lower isolating plate, an opening is formed in the upper isolating plate, and the air outlet buffer cavity is formed in the upper isolating plate; the two sides of the upper isolation plate, which are positioned at the opening, extend to the side edge of the shell respectively to form a lower isolation plate, and an air outlet guide channel is formed between the two lower isolation plates.
Due to the arrangement, the isolating plate is arranged, so that the air inlet cavity and the air outlet buffer guide channel can be effectively isolated, and the air outlet channel extends into the isolating plate, so that the exhaled air and the inhaled air can be further prevented from being mixed in the air inlet cavity and the air outlet buffer guide channel, and the safety and protection performance can be further improved; an air outlet buffer cavity is formed in the upper isolation plate; an air outlet guide channel is formed between the two lower partition plates. In this way, exhaled air can be redirected and routed through the lower baffle.
Further, be located on the shell that the position that is close to the buffer chamber of giving vent to anger between the two lower division boards is equipped with the card portion of putting, on the card portion of putting or the card portion of putting and form the air channel down between the division board, the air channel intercommunication give vent to anger the buffer chamber and give vent to anger the direction passageway, is equipped with the card that is used for the card to put filter equipment that gives vent to anger on the card portion of putting and puts the groove.
Above setting, the air channel be used for gaseous through the filter equipment that gives vent to anger, the card put the groove and be used for the card to put filter equipment that gives vent to anger, the quick installation of being convenient for and dismantle filter equipment that gives vent to anger like this, be convenient for change filter equipment that gives vent to anger, consequently, can prolong the live time of this gauze mask.
Further, a flange is arranged on the shell, and an air inlet cavity is formed in the flange; an air inlet is arranged on the flange.
Above setting, can guarantee through the air inlet that external air enters into in the air intake cavity.
Furthermore, a flange is arranged on the shell and outside the isolation plate, and an air inlet cavity is formed between the flange and the isolation plate; an air inlet is arranged on the flange.
According to the arrangement, an air inlet cavity is formed between the flange and the isolation plate; thus the air inlet cavity is separated from the air outlet buffer guide channel formed in the partition plate; the inhaled gas and the exhaled gas are separated, so that the protection effect is good.
Furthermore, a clamping hole for clamping the clamping piece is formed in the shell.
According to the arrangement, the clamping holes are formed, so that the clamping holes can be matched with the clamping pieces, and the shell is convenient to mount and dismount; the mask is convenient to clean the shell, the mask body and the like, is convenient to use for many times, and has good safety performance after being cleaned.
Furthermore, a hanging lug connecting hole is formed in the shell.
Above setting, through setting up the hangers connecting hole, make things convenient for the hangers to be connected with the shell like this, make the shell conveniently wear.
Furthermore, the air outlet filtering device is an air outlet filtering sheet.
According to the arrangement, the air outlet filter disc convenient to replace is arranged, so that the air outlet filter device can be replaced after being used for a period of time; the filtering effect of the air outlet filtering device is good.
Drawings
Fig. 1 is a front view of the mask using the present invention.
Fig. 2 is a perspective view of the mask of the present invention.
Fig. 3 is a perspective view of another viewing angle of the mask of the present invention.
Fig. 4 is an exploded view of the mask of the present invention.
Fig. 5 is a schematic perspective view of the present invention.
Fig. 6 is a perspective view of a mask fixing device according to the present invention.
Fig. 7 is a side view of the mask fixing device of the present invention.
Fig. 8 is a schematic perspective view of a mask using the mask of the present invention.
Fig. 9 is a cross-sectional view a-a of fig. 1.
Fig. 10 is a schematic perspective view of a one-way valve of a mask according to the present invention.
Fig. 11 is a cross-sectional view of B-B in fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-4; a shell 1 of a high-protection mask and a mask using the shell; the mask comprises an air inlet filter 4 and a mask body 20. The mask body 20 includes a fixing device 2 and a mask 3.
As shown in fig. 4 and 5, the edge of the shell 1 forms a shell edge 11 towards the mask 3, a flange 13 extending towards the mask 3 is arranged inside the shell 1 and on the inner side of the shell edge 11, the shell edge 11 protrudes from the flange 13, and a plurality of transversely extending air inlets 131 are arranged on the flange 13; a transition cavity 100 is formed between the shell edge 11 and the flange 13; a partition plate 14 is arranged inside the shell 1 and positioned at the edge 11 of the shell, the partition plate 14 comprises an upper partition plate 141 and a lower partition plate 142, the upper partition plate 141 is arc-shaped, and an opening 1411 is formed in the upper partition plate 141; the two sides of the upper isolation plate 141 at the opening 1411 are respectively extended to the side of the housing 1 to form lower isolation plates 142; the flange 13 extends to intersect the lower partition plate 142.
An air inlet cavity 17 is arranged between the flange 13 and the partition plate 14; an air outlet buffer guide channel 18 is formed in the isolation plate, and an air inlet cavity 17 is separated from the air outlet buffer guide channel;
in the present embodiment, the size of the air inlet cavity 17 is larger than the size of the air outlet buffer guide channel 18; the inlet chamber 17 can contain more air; with the arrangement, the air can be sucked by a user to be increased when the user inhales, and the use is comfortable.
The air outlet buffer guiding channel 18 comprises an air outlet buffer cavity 181 and an air outlet guiding channel 182, the air outlet guiding channel 182 extends from the air outlet buffer cavity 181 to the side edge of the housing, the extending end of the air outlet guiding channel 182 is an air outlet, in terms of structure, the air outlet buffer cavity 181 is formed in the upper isolation plate 141, and the air outlet guiding channel 182 is formed between the two lower isolation plates 142. The position that is located between two lower division boards on shell 1 and is close to the buffer chamber 181 of giving vent to anger is equipped with card portion 19, and card portion 19 goes up or forms air channel 191 between card portion and the lower division board, and air channel 191 communicates buffer chamber 181 and the guide channel 182 of giving vent to anger, is equipped with the card groove 192 that is used for the card to put filter equipment of giving vent to anger on card portion 19. The air outlet filtering device is a filtering sheet (not shown), such as a nano filtering sheet, the air channel 191 is used for air to pass through the air outlet filtering device, the clamping groove 192 is used for clamping the air outlet filtering device, so that the air outlet filtering device is convenient to mount and dismount quickly, the air outlet filtering device is convenient to replace, and therefore the service life of the mask can be prolonged.
The housing 1 is provided with a lug 12, in the embodiment, the two opposite sides of the housing are respectively provided with the lug 12, and the lug 12 is provided with a clamping hole 15 and a hanging lug connecting hole 16.
As shown in fig. 4, the intake filter 4 is provided with a through hole 41 in the middle.
As shown in fig. 4, 6 to 11, the fixing device 2 includes a supporting member 21, a convex ring 22 and a resisting flange 23, an air outlet channel 24 is formed in the middle of the supporting member 21, the air outlet channel 24 extends through the convex ring 22, a mounting plate 27 is arranged in the air outlet channel 24 on the supporting member 21, and an air hole 271, a mounting hole 272 and a one-way valve supporting plate 273 for supporting the one-way valve 5 are arranged on the mounting plate 27; air inlet channels 25 are arranged on the support piece 21 and positioned at the periphery of the air outlet channel, and reinforcing ribs 26 are formed between the adjacent air inlet channels 25; the convex ring 22 is positioned on the edge of the air outlet channel from the support plate and extends towards the shell direction, and the convex ring 22 extends into the air outlet buffer cavity 181; the stop flange 23 extends from the support member towards the mask and then towards the outside. A clamping member 28 is disposed on the supporting member 21 at a position corresponding to the clamping hole, and the clamping member 28 includes a connecting arm 281 connected to the supporting member and a hook 282 connected to the connecting arm 281.
The one-way valve 5 is arranged on the mounting plate 27 through the air outlet channel 24; the one-way valve 5 comprises
A check valve body and a check valve mounting part 51 connected to the check valve body; the one-way valve body is attached to the mounting plate 27; the check valve mounting part 51 comprises a mounting connecting piece 511 and a mounting clamping piece 512, wherein the mounting connecting piece 511 is connected with the mounting clamping piece 512; the mounting clip 512 is mounted on the mounting plate 27 through the mounting hole 272.
As shown in fig. 4, 8 and 9, the face guard be the flexible face guard of nanometer silica gel, with the flexible face guard of nanometer silica gel, nanometer material can purify the air, and the high temperature resistance of the flexible face guard of nanometer silica gel is good moreover, consequently, can carry out a lot of disinfection to the face guard through high temperature, like this, can used repeatedly the face guard to the cost is reduced, flexible face guard is inseparabler with facial laminating moreover. The face mask 3 comprises a mask body 31, a resisting part 32 and a face pasting part 33, wherein the resisting part 32 extends inwards from one end of the mask body 31 close to the fixing device, and the face pasting part 33 extends inwards from one end far away from the fixing device and then towards the fixing device; the mask has a cavity 300; the abutment portion 32 abuts against the abutment flange 23, the support passing through the mask; perforations 34 are provided in the mask. The end face of the face mask 3 close to the shell is provided with a concave air inlet groove 331, the air inlet groove 331 is communicated with the transition cavity 100, and the transition cavity 100 is communicated with the air inlet cavity through the air inlet 131.
When the mask is installed, the retaining flange 23 of the fixing device is firstly retained below the retaining part 32, the supporting piece penetrates through the mask, meanwhile, the clamping piece penetrates through the through hole 34, and after the mask is installed, the convex ring protrudes out of the mask; then the air inlet filter 4 is sleeved on the convex ring 22; and finally, the shell is clamped on a clamping hook of the clamping piece through the clamping hole, and the air inlet filter sheet is pressed through the flange, so that the installation of the health and safety protection mask is realized.
Above-mentioned gauze mask that uses a high protective facial mask's shell, when using, let the facial portion of subsides human face, in the external air enters into the air intake cavity from the air inlet, this is internal through the inlet channel entering gauze mask after the air in the air intake cavity filters through the filter that admits air. The gas that the human body exhaled enters into the cushion chamber of giving vent to anger through air outlet channel and check valve, cushions through the cushion chamber of giving vent to anger and detains exhaled gas, then enters into the air under the guiding action of the direction passageway of giving vent to anger after giving vent to anger filter equipment filtration. This structure, the cavity is no longer got back to in the gas of exhalation behind the check valve, then cushion through the cushion chamber of giving vent to anger, filter the gas of exhalation through the filter equipment of giving vent to anger at last, then turn to and prolong the outlet channel to the gas of exhalation through giving vent to anger guide channel, and thus, under the effect of check valve, not only let the gas backward flow of exhalation, wear the gauze mask people with the protection, in addition through buffering and filtering the gas of exhalation, and change the route and the length of the gas of exhalation, reduce the droplet in the gas of exhalation and enter into the air, can carry out effectual protection to other people, therefore, this gauze mask uses healthily, safety, barrier propterty is good.
Owing to set up the division board, like this, can effectually with the air inlet cavity with give vent to anger the effectual separation of buffering guide way, and give vent to anger the passageway and stretch into in the division board, consequently, can further avoid the gas of exhalation and the gas of inhaling to mix in air inlet cavity and the buffering guide way of giving vent to anger, further improve safety, barrier propterty. Because the lower isolation plate is arranged, exhaled gas can be redirected and the path can be prolonged through the lower isolation plate. Because the flange is arranged, the air inlet filter plate can be pressed and fixed, and meanwhile, the air inlet can ensure that external air enters the air inlet cavity. Through setting up the bulge loop, and the bulge loop stretches into the buffer chamber of giving vent to anger, like this, the gas of exhaling from the cavity enters into the buffer chamber of giving vent to anger through the check valve, avoids the gas of exhaling to enter into the air intake cavity in, avoids the gas reuse of human body exhalation to cause unsafe, unhealthy phenomenon. The blocking part blocks the blocking flange, so that the mask is prevented from being easily separated from the fixing device. Because the air inlet filter sheet is sleeved on the convex ring, and the convex ring extends into the air outlet buffer cavity, the air in the air inlet cavity can reliably enter the cavity through the air inlet filter sheet. Due to the arrangement of the air inlet groove, air can conveniently enter the air inlet cavity. Through the cooperation in joint spare and joint hole being connected, like this, easy to assemble with dismantle the shell, consequently, be convenient for wash shell, gauze mask body etc. the repetitious usage gauze mask of being convenient for through wasing the back safety performance again moreover good.
Claims (9)
1. The utility model provides a shell of high protective facial mask which characterized in that: an air inlet cavity and an air outlet buffering guide channel are arranged in the shell, the air inlet cavity is separated from the air outlet buffering guide channel, and the air outlet buffering guide channel comprises an air outlet buffering cavity and an air outlet guide channel; an air inlet is arranged on the shell; the air outlet guide channel extends from the air outlet buffer cavity to the side edge of the shell, and the extending tail end of the air outlet guide channel is an air outlet; an air outlet filtering device is arranged on the shell and positioned between the air outlet buffer cavity and the air outlet guide channel; the space of the air inlet cavity is larger than that of the air outlet buffer cavity.
2. The shell of a high protective mask according to claim 1, characterized in that: a partition plate is arranged on the inner side of the shell, and an air outlet buffer guide channel is formed in the partition plate; the isolating plate comprises an upper isolating plate and a lower isolating plate, an opening is formed in the upper isolating plate, and the air outlet buffer cavity is formed in the upper isolating plate; the two sides of the upper isolation plate, which are positioned at the opening, extend to the side edge of the shell respectively to form a lower isolation plate, and an air outlet guide channel is formed between the two lower isolation plates.
3. The shell of a high protective mask according to claim 1, characterized in that: the shell is provided with a clamping portion which is located between the two lower partition plates and is close to the air outlet buffer cavity, an air groove is formed in the clamping portion or between the clamping portion and the lower partition plates, the air groove is communicated with the air outlet buffer cavity and the air outlet guide channel, and a clamping groove used for clamping the air outlet filter device is formed in the clamping portion.
4. The shell of a high protective mask according to claim 1, characterized in that: a flange is arranged on the shell, and an air inlet cavity is formed in the flange; an air inlet is arranged on the flange.
5. The shell of a high protective mask according to claim 2, characterized in that: a flange is arranged on the shell and positioned outside the isolation plate, and an air inlet cavity is formed between the flange and the isolation plate; an air inlet is arranged on the flange.
6. The shell of a high protective mask according to claim 1, characterized in that: the shell is provided with a clamping hole for clamping the clamping piece.
7. The shell of a high protective mask according to claim 1, characterized in that: the shell is provided with a hanging lug connecting hole.
8. The shell of a high protective mask according to claim 1, characterized in that: the air outlet filtering device is an air outlet filtering sheet.
9. The shell of a high protective mask according to claim 1, characterized in that: the upper isolation plate is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020286961.4U CN212994526U (en) | 2020-03-10 | 2020-03-10 | Shell of high protective mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020286961.4U CN212994526U (en) | 2020-03-10 | 2020-03-10 | Shell of high protective mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212994526U true CN212994526U (en) | 2021-04-20 |
Family
ID=75442423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020286961.4U Expired - Fee Related CN212994526U (en) | 2020-03-10 | 2020-03-10 | Shell of high protective mask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212994526U (en) |
-
2020
- 2020-03-10 CN CN202020286961.4U patent/CN212994526U/en not_active Expired - Fee Related
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Legal Events
| 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: 20210420 |