CN212491201U - Mask - Google Patents
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- CN212491201U CN212491201U CN202020447858.3U CN202020447858U CN212491201U CN 212491201 U CN212491201 U CN 212491201U CN 202020447858 U CN202020447858 U CN 202020447858U CN 212491201 U CN212491201 U CN 212491201U
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- air
- fan
- mask
- inner shell
- sealing cover
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Abstract
本实用新型公开一种口罩，包括密封罩、风扇和支撑组件，所述密封罩朝向使用者的一侧具有风腔，且所述密封罩的侧壁开设有进风口和出风口；所述风扇包括送风风扇和排风风扇，所述送风风扇和所述排风风扇分别与动力源驱动连接，所述风扇通过所述支撑组件安装于所述密封罩远离所述风腔的一侧。这样，通过设置送风风扇和排风风扇，在吸气和呼气时形成风腔内外的压力差，并利用压力差实现吸气和呼气的助力，使得吸气和呼气更为顺畅，降低呼吸阻力，提高了口罩的舒适度，从而解决了现有口罩使用时呼吸阻力较大、口罩舒适性较差的技术问题。
The utility model discloses a mask, comprising a sealing cover, a fan and a support assembly. The side of the sealing cover facing the user is provided with an air cavity, and the side wall of the sealing cover is provided with an air inlet and an air outlet; the fan It includes an air supply fan and an air exhaust fan, the air supply fan and the air exhaust fan are respectively drivingly connected to a power source, and the fan is installed on the side of the sealing cover away from the air cavity through the support assembly. In this way, by setting the air supply fan and the exhaust fan, the pressure difference between the inside and outside of the air cavity is formed during inhalation and exhalation, and the pressure difference is used to assist the inhalation and exhalation, so that the inhalation and exhalation are smoother. The breathing resistance is reduced and the comfort of the mask is improved, thereby solving the technical problems of high breathing resistance and poor comfort of the mask when the existing mask is used.
Description
Technical Field
The utility model relates to a protective articles technical field, more specifically relate to a gauze mask.
Background
The mask is a common sanitary protective article, and is generally a tool which is worn at the mouth and nose part and is used for filtering air entering the mouth and nose so as to prevent harmful gas, smell and spray from entering and exiting the mouth and nose of a wearer. The mask has a certain filtering effect on air entering the lung, and has a better protective effect when worn in an environment with epidemic respiratory infectious diseases or poor air quality.
When the existing mask is used, air outside the mask is sucked into the mask through a mask filter layer mainly by negative pressure formed in the mask when a user inhales, and air inside the mask is discharged out of the mask through the mask filter layer or an exhalation valve by positive pressure formed in the mask when the user exhales. However, the negative pressure in the mask formed by the user when inhaling will prevent the air in the mask from flowing into the user's lungs, creating inhalation resistance; the positive pressure in the mask formed when the user exhales can prevent the air in the user's lungs from exhaling, forming exhalation resistance. The breathing resistance is called breathing resistance by the combination of inspiration resistance and expiration resistance, and the breathing resistance can cause the user to feel difficult to breathe, so that the user feels uncomfortable in the using process of the mask.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gauze mask to at least part solves the technical problem that breathing resistance is great, the gauze mask travelling comfort is relatively poor when current gauze mask uses.
In order to solve the technical problem, the utility model provides a mask, include:
the side, facing the user, of the sealing cover is provided with an air cavity, and the side wall of the sealing cover is provided with an air inlet and an air outlet;
the fan comprises an air supply fan and an air exhaust fan, and the air supply fan and the air exhaust fan are respectively in driving connection with a power source;
and the fan is arranged on one side of the sealing cover far away from the air cavity through the supporting component.
Further, the sealing cover comprises a mounting part fixedly connected with the supporting component and a face contact part; the air inlet and the air outlet are both arranged on the side wall of the mounting part; the face-contacting portion is of a flexible construction.
Furthermore, the air outlet direction of the air supply fan faces the air inlet, and the air inlet direction of the air exhaust fan faces the air outlet.
Further, the support assembly includes:
the inner shell is arranged on one side, away from the air cavity, of the sealing cover, two air passing openings are formed in the inner shell, and one of the air passing openings is provided with the air supply fan and the air exhaust fan;
the support is arranged on one side, far away from the sealing cover, of the inner shell, the air grid is arranged on the support, and the other of the air supply fan and the air exhaust fan is arranged on the support.
Further, the air supply fan is mounted to the inner case, and the air exhaust fan is mounted to the bracket.
Furthermore, the support is close to the air supply fan and a first damping ring is arranged between the support and the inner shell, and/or the inner shell is close to the air exhaust fan and a second damping ring is arranged between the inner shell and the support.
Further, the power source includes:
the battery, offer the first mounting groove on the said inner casing, the said battery inlays and locates in the said first mounting groove;
the battery is electrically connected with the main control circuit board, the main control circuit board is respectively electrically connected with the air supply fan and the air exhaust fan, a second mounting groove is formed in the inner shell, and the main control circuit board is embedded in the second mounting groove.
Further, still include the baroceptor circuit board, the baroceptor circuit board includes:
the air pressure sensor detects the air pressure in the air cavity through a detection opening on the sealing cover;
and the connecting wire is connected with the main control circuit board.
Further, still include:
the cover body is arranged on the inner shell in an openable and closable manner, and a plurality of air holes are formed in the cover body;
an accommodating cavity is formed between the cover body and the inner shell, and the support is located in the accommodating cavity.
Furthermore, a filter layer is further installed in the accommodating cavity and is located between the support and the cover body.
Furthermore, one end of the cover body is rotatably connected with the inner shell, and the other end of the cover body is detachably connected with the inner shell through a buckle.
The utility model provides a mask, which comprises a sealing cover, a fan and a supporting component, wherein, one side of the sealing cover facing to a user is provided with an air cavity, and the side wall of the sealing cover is provided with an air inlet and an air outlet; the fan comprises an air supply fan and an air exhaust fan, the air supply fan and the air exhaust fan are respectively in driving connection with a power source, and the fan is installed on one side, far away from the air cavity, of the sealing cover through the supporting assembly. When the air suction fan is used, when a user inhales air, the air suction causes the air pressure of the air cavity to change towards the direction of pressure reduction, the air supply fan can increase the air volume, and the air exhaust fan can reduce the air volume, so that the air pressure in the air cavity changes towards the direction of pressure increase and is opposite to the action direction of the air suction of the user on the air pressure of the air cavity, thereby reducing the resistance during air suction and facilitating the air suction of the user; when the user exhales, exhale and lead to wind chamber atmospheric pressure to the direction change of pressure boost, the air supply fan can reduce the amount of wind, the fan of airing exhaust can increase the amount of wind for atmospheric pressure in the wind chamber is to the direction change of decompression, and is opposite to the effect direction of people's expiration to wind chamber atmospheric pressure, has reduced the resistance when exhaling, and convenient to use person exhales gas. Like this, through setting up air supply fan and exhaust fan, can partially, completely or offset in excess and breathe in and exhale the influence to wind chamber atmospheric pressure, reduce the respiratory resistance, improved the comfort level of gauze mask to breathe the great, the relatively poor technical problem of gauze mask travelling comfort of resistance when having solved current gauze mask and using.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a mask according to an embodiment of the present invention;
FIG. 2 is another view of the mask of FIG. 1 in another orientation;
FIG. 3 is an exploded view of the mask of FIG. 1;
FIG. 4 is a transverse cross-sectional view of the mask of FIG. 1;
fig. 5 is a view showing a state of use of the mask shown in fig. 1.
Description of reference numerals:
100-mask
1-sealing cover 1.1-mounting part 1.2-face contact part 101-air cavity 102-air inlet 103-air outlet 2-air supply fan 3-exhaust fan 401-inner shell 402-support 5-first damping ring 6-second damping ring 7-battery 8-main control circuit board 9-air pressure sensor circuit board 10-containing cavity 11-cover 111-air hole 12-filter layer 13-buckle 14-auxiliary air cavity
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by like reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale. Moreover, certain well-known elements may not be shown in the figures.
Numerous specific details of the invention, such as structure, materials, dimensions, processing techniques and techniques of components, are set forth in the following description in order to provide a more thorough understanding of the invention. However, as will be understood by those skilled in the art, the present invention may be practiced without these specific details.
In one embodiment, as shown in fig. 1-5, the mask 100 of the present invention comprises a sealing cap 1, a fan and a support assembly. Wherein, the sealing cover 1 is the structure that this gauze mask 100 is used for contacting with the user, and it covers user's oronasal part when using, and softer polyurethane or colloid structure can be chooseed for use to sealing cover 1, also can set up structures such as abrasionproof pad in sealing cover 1 and human contact position to avoid causing wearing and tearing to user's face or bridge of the nose etc.. The side of the sealing cover 1 facing the user is provided with an air cavity 101, the side wall of the sealing cover 1 is provided with an air inlet 102 and an air outlet 103, and the air outlet 103 can be further provided with an exhalation valve. The sealing cover 1 can be of an integrated structure, the sealing cover 1 is concave inwards to form the air cavity 101, and the specification of the air cavity 101 can be determined according to the use requirement without limitation.
The sealing cover 1 comprises a mounting part 1.1 and a surface contact part 1.2; wherein, installation department 1.1 is used for with supporting component fixed connection, specifically can with interior casing 401 fixed connection in the supporting component, and the shape of installation department 1.1 and interior casing 401's shape looks adaptation to improve the laminating nature. The air inlet and the air outlet are both arranged on the side wall of the mounting part; the face contact part is of a flexible structure, so that discomfort caused by a rigid structure is avoided when the face contact part is in contact with the face, and the wearing comfort is improved.
It should be understood that when a user inhales air, the air enters the air cavity 101 of the sealing cover 1 through the air inlet and then enters a human body, an air supply air channel is formed by the air passing path of the air inlet and the air cavity 101, when the user exhales air, the air enters the external atmosphere after entering the air cavity 101, the air outlet and the exhalation valve through the human body, and an air exhaust air channel is formed by the air passing path of the air cavity 101, the air outlet 103 and the exhalation valve. Specifically, the air outlet direction of the air supply fan 2 faces the air inlet, and the air inlet direction of the air exhaust fan 3 faces the air outlet, so that the air inlet and air exhaust effects are improved.
In order to make the air supply duct and the air exhaust duct relatively independent, two sets of fans can be arranged, namely, the fans comprise an air supply fan 2 positioned in the air supply duct and an air exhaust fan 3 positioned in the air exhaust duct, the air supply fan 2 and the air exhaust fan 3 are respectively in driving connection with a power source, and when the power source supplies power to a fan motor, the power source can drive the air supply fan 2 or the air exhaust fan 3 to rotate. The exhaust fan 3 is used for conveying the air in the air chamber 101 to the outside, and the exhaust fan 3 can be further provided with an exhalation valve which is a one-way valve and is positioned at one end of the exhaust fan 3 far away from the air chamber 101 to isolate the outside from the air chamber 101 so as to prevent the outside air from entering the air chamber 101 when the exhaust fan 3 stops working.
The fan is arranged on one side of the sealing cover 1 far away from the air cavity 101 through the supporting component, namely the exhaust fan 3 and the air supply fan 2 are both arranged on the supporting component and are arranged on the sealing cover 1 through the supporting component, and the sealing cover 1 is of a flexible structure and is not suitable for installing the fan, once the fan is deformed, the fan can hit the wall, so that the rigid supporting component is required to be matched with the installation part 1.1 of the sealing cover, and the installation stability of the fan is improved.
In the above specific embodiment, the utility model provides a gauze mask 100 is in the use, and when the user breathes in, breathe in and lead to the direction change that the wind cavity atmospheric pressure is to the decompression, and the air supply fan can increase the amount of wind, and the air exhaust fan can reduce the amount of wind, makes the atmospheric pressure in the wind cavity to the direction change of pressure boost, and the effect direction of breathing in to wind cavity atmospheric pressure with people is opposite, thereby has reduced the resistance when breathing in, and convenient to user inhales the gas; when the user exhales, exhale and lead to wind chamber atmospheric pressure to the direction change of pressure boost, the air supply fan can reduce the amount of wind, the fan of airing exhaust can increase the amount of wind for atmospheric pressure in the wind chamber is to the direction change of decompression, and is opposite to the effect direction of people's expiration to wind chamber atmospheric pressure, has reduced the resistance when exhaling, and convenient to use person exhales gas. Like this, through setting up air supply fan and exhaust fan, can partially, completely or offset in excess and breathe in and exhale the influence to wind chamber atmospheric pressure, reduce the respiratory resistance, improved the comfort level of gauze mask to breathe the great, the relatively poor technical problem of gauze mask travelling comfort of resistance when having solved current gauze mask and using.
Specifically, the support assembly includes an inner housing 401 and a bracket 402, wherein the inner housing 401 is mounted on one side of the sealing cover 1 away from the air cavity 101, two air passing openings are formed in the inner housing 401 to facilitate air intake and air exhaust respectively, and one of the air passing openings is mounted with one of the air supply fan 2 and the air exhaust fan 3; the bracket 402 is installed on one side of the inner casing 401 away from the sealing cover 1, an air grid is opened on the bracket 402, and the other one of the air supply fan 2 and the air exhaust fan 3 is installed on the bracket 402.
In this embodiment, the blowing fan 2 is attached to the inner case 401, and the exhaust fan 3 is attached to the bracket 402, but theoretically, the blowing fan may be attached to the bracket 402, and the exhaust fan may be attached to the inner case 401. Specifically, the fan may be a centrifugal fan, the inner casing 401 and the bracket 402 are both substantially V-shaped, and the exhaust fan 3 and the supply fan 2 are respectively disposed on both sides of the V-shaped structure, so that the supply passage is formed at an acute angle, for example, at an angle of 45 degrees, with respect to the axis of the exhaust passage. Specifically, a rotating shaft may be disposed on the bracket, and the exhaust fan may be sleeved on the rotating shaft, and similarly, a rotating shaft may be disposed on the inner housing, and the air supply fan may be sleeved on the rotating shaft of the inner housing, so as to implement the installation of the exhaust fan and the air supply fan. In the actual product, air supply fan and exhaust fan all set up between support and interior casing to improve space utilization, reduce the volume of gauze mask as far as possible.
The bracket 402 is close to the blowing fan 2 and a first damping ring 5 is arranged between the inner housing 401, and/or the inner housing 401 is close to the exhaust fan 3 and a second damping ring 6 is arranged between the bracket 402 to reduce vibration and working noise.
The power source may be a lithium battery, a circuit board thereof, or solar energy, as a structure capable of supplying rotational energy to the blowing fan 2 and the exhaust fan 3. Specifically, in order to reduce the cost and facilitate the use and replacement, the power source includes a battery 7 and a main control circuit board 8, a first mounting groove is formed on the inner housing 401, and the battery 7 is embedded in the first mounting groove; the battery 7 is connected with the main control circuit board 8 through a wire, the main control circuit board is respectively connected with the air supply fan and the air exhaust fan through a flat cable, a second mounting groove is formed in the inner shell 401, and the main control circuit board 8 is embedded in the second mounting groove. In this embodiment, the battery 7 may be two pieces, connected in parallel to provide a greater battery capacity. Theoretically, the electrical connection between the main control circuit board and the battery is not limited to a wire, and may also be a flat cable, and similarly, the connection between the main control circuit board and the fan is not limited to a flat cable, and may also be a wire. The connecting line between the air pressure sensor and the main control circuit board can also be a conducting wire or a flat cable, and is not limited.
In addition, this gauze mask can also include pilot lamp and the switch of being connected with battery, main control circuit board to the operating condition of suggestion and control gauze mask.
In order to realize the automatic switch of airing exhaust and air supply, this gauze mask 100 still includes baroceptor circuit board 9, the baroceptor circuit board includes baroceptor and connects the winding displacement, the baroceptor passes through detection opening on the sealed cowling detects atmospheric pressure in the wind cavity, the winding displacement with main control circuit board 8 is connected to start stopping or increase and decrease the speed according to the atmospheric pressure adjustment fan in the wind cavity, it should be understood that if start stopping or increase and decrease the speed control strategy according to atmospheric pressure adjustment fan within this application protection scope, do not give unnecessary details. In the use process, the air pressure sensor circuit board can sense the air pressure in the air cavity, the main control circuit board can calculate the breathing rhythm of a person according to an air pressure signal from the air pressure sensor circuit board and the running state of the fan, when a user inhales air, the air pressure of the air cavity is changed towards the direction of pressure reduction due to the fact that the air is inhaled, the main control circuit board controls the air supply fan to increase the air quantity, the air discharge fan to reduce the air quantity, the air pressure in the air cavity is changed towards the direction of pressure increase, the acting direction of the air pressure of the air cavity is opposite to the acting direction of the air suction of the person on the air pressure of; when the user exhales, exhale and lead to wind chamber atmospheric pressure to the direction change of pressure boost, main control circuit board control air supply fan reduces the amount of wind, the fan increase amount of wind of airing exhaust for atmospheric pressure in the wind chamber is to the direction change of decompression, and is opposite to the effect direction of wind chamber atmospheric pressure with people's expiration, has reduced the resistance when exhaling, and convenient to use person exhales gas. Therefore, by controlling the air supply fan and the air exhaust fan, the influence of air suction and air exhaust on the air pressure of the air cavity can be partially, completely or excessively counteracted, the breathing resistance is reduced, and the comfort level of the mask is improved.
The mask provided by the above embodiments may be further improved.
Further, the mask 100 further includes a cover 11, the cover 11 is openably and closably mounted on the inner shell 401, the cover 11 is provided with a plurality of air holes 111, an accommodating cavity 10 is formed between the cover 11 and the inner shell 401, and the support 402 is located in the accommodating cavity 10; a cover body 11 is arranged on the outer side of the bracket 402 and the inner shell 401 and used for clamping the filter layer 12 between the bracket 402 and the cover body 11, and a plurality of air holes 111 are arranged on the cover body 11 to ensure that air flow normally passes through.
The filter layer 12 is further installed in the accommodating chamber 10, and the filter layer 12 is located between the support 402 and the cover 11, so that the space inside the inlet cover 100 is filtered by the filter layer 12.
Specifically, the cover 11 has one end rotatably connected to the inner housing 401 and the other end detachably connected to the inner housing 401 through the buckle 13, that is, in a normal use state, the buckle 13 is in a buckling state, and after the buckle 13 is opened, the filter layer 12 can be replaced to improve the convenience of consumable replacement.
Further, after the filter layer 12 is provided, an auxiliary air chamber 14 is formed in the space between the filter layer 12 and the air supply fan 2, the auxiliary air chamber 14 is matched with the air chamber 101, so that the mask 100 has two chambers, thus, due to the effect of the air supply fan, the air pressure of the auxiliary air chamber 14 is lower than the atmospheric pressure, and an air pressure difference is formed inside and outside the filter layer 12, so that the external air is sucked into the auxiliary air chamber 14 after being filtered by the filter layer 12, the air in the auxiliary air chamber 14 is supplemented, the filter layer 12 arranged at the position can cover the whole cover body 11, and the large-area filter layer 12 is used for reducing the conveying resistance of the air supply fan 2.
Due to the double-cavity structure, when the air supply fan 2 starts to work, air flow flowing into the air cavity 101 from the auxiliary air cavity 14 is generated, the flowing direction of the air flow is from the outside to the direction close to the user, the air flow flows into the air cavity 101, the air pressure in the air cavity 101 is increased, and therefore the resistance of the user in air suction is reduced. In addition, due to the action of the blowing fan 2, the air pressure of the auxiliary air chamber 14 is lower than the atmospheric pressure, and an air pressure difference is formed between the inside and the outside of the filter layer 12, so that the outside air is sucked into the auxiliary air chamber 14 of the mask 100 after being filtered by the filter layer 12, and the air in the auxiliary air chamber 14 is supplemented. When the exhaust fan 3 starts to work, airflow which leads to the expiratory valve is generated, the flow direction of the airflow is from the direction of the user to the external atmosphere, and the gas exhaled by the user is exhausted to the outside through the expiratory valve. The air exiting the air chamber 101 may reduce the air pressure in the air chamber 101, thereby reducing the resistance of the user in exhaling and increasing the comfort of the user in inhaling.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A mask, comprising:
the air-conditioning device comprises a sealing cover (1), wherein an air cavity (101) is formed in one side, facing a user, of the sealing cover (1), and an air inlet (102) and an air outlet (103) are formed in the side wall of the sealing cover (1);
the fan comprises an air supply fan (2) and an air exhaust fan (3), and the air supply fan (2) and the air exhaust fan (3) are respectively in driving connection with a power source;
the fan is mounted on one side, far away from the air cavity (101), of the sealing cover (1) through the supporting assembly.
2. Mask according to claim 1, characterized in that said sealing cap (1) comprises a mounting portion (1.1) and a face contact portion (1.2) fixedly connected to said supporting member; the air inlet (102) and the air outlet (103) are both arranged on the side wall of the mounting part (1.1); the face-contacting portion (1.2) is of a flexible construction.
3. Mask according to claim 1, characterized in that the air outlet direction of the air supply fan (2) is towards the air inlet (102) and the air inlet direction of the air exhaust fan (3) is towards the air outlet (103).
4. The mask of claim 3 wherein said support assembly comprises:
the inner shell (401) is mounted on one side, away from the air cavity (101), of the sealing cover (1), two air passing openings are formed in the inner shell (401), and one of the air passing openings is provided with the air supply fan (2) and the air exhaust fan (3);
the air supply device comprises a support (402), the support (402) is installed on one side, away from the sealing cover (1), of the inner shell (401), an air grid is arranged on the support (402), and the other of the air supply fan (2) and the air exhaust fan (3) is installed on the support (402).
5. The mask of claim 4 wherein said blower fan (2) is mounted to said inner shell (401) and said exhaust fan (3) is mounted to said support (402).
6. Mask according to claim 5, characterized in that the bracket (402) is fitted with a first damping ring (5) close to the blower fan (2) and between it and the inner shell (401), and/or in that the inner shell (401) is fitted with a second damping ring (6) close to the exhaust fan (3) and between it and the bracket (402).
7. The mask of claim 4 wherein said power source comprises:
the battery (7), offer the first mounting groove on the said inner casing (401), the said battery (7) inlays and fits in the said first mounting groove;
the air-conditioning unit comprises a main control circuit board (8), a battery (7) and the main control circuit board (8) are electrically connected, the main control circuit board is respectively electrically connected with an air supply fan and an air exhaust fan, a second mounting groove is formed in the inner shell (401), and the main control circuit board (8) is embedded in the second mounting groove.
8. The mask of claim 7 further comprising an air pressure sensor circuit board (9) comprising:
the air pressure sensor detects the air pressure in the air cavity through a detection opening on the sealing cover;
the connecting wire, the connecting wire with master control circuit board (8) are connected.
9. The mask of any one of claims 4 to 7 further comprising:
the cover body (11) is arranged on the inner shell (401) in an openable and closable manner, and a plurality of air holes (111) are formed in the cover body (11);
an accommodating cavity (10) is formed between the cover body (11) and the inner shell (401), and the bracket (402) is positioned in the accommodating cavity;
the filter layer (12) is arranged in the accommodating cavity, and the filter layer (12) is located between the support (402) and the cover body (11).
10. Mask according to claim 9, wherein one end of the cover (11) is rotatably connected to the inner shell (401) and the other end is detachably connected to the inner shell (401) by means of a snap (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020447858.3U CN212491201U (en) | 2020-03-31 | 2020-03-31 | Mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020447858.3U CN212491201U (en) | 2020-03-31 | 2020-03-31 | Mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212491201U true CN212491201U (en) | 2021-02-09 |
Family
ID=74441872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020447858.3U Expired - Fee Related CN212491201U (en) | 2020-03-31 | 2020-03-31 | Mask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212491201U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115251495A (en) * | 2021-04-30 | 2022-11-01 | 广东美的制冷设备有限公司 | Gauze mask |
| CN115251496A (en) * | 2021-04-30 | 2022-11-01 | 广东美的制冷设备有限公司 | Gauze mask |
| CN115770363A (en) * | 2022-12-02 | 2023-03-10 | 中国矿业大学 | An automatic adjustment air supply device for masks |
-
2020
- 2020-03-31 CN CN202020447858.3U patent/CN212491201U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115251495A (en) * | 2021-04-30 | 2022-11-01 | 广东美的制冷设备有限公司 | Gauze mask |
| CN115251496A (en) * | 2021-04-30 | 2022-11-01 | 广东美的制冷设备有限公司 | Gauze mask |
| CN115770363A (en) * | 2022-12-02 | 2023-03-10 | 中国矿业大学 | An automatic adjustment air supply device for masks |
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