A splash-proof protective mask
By designing a protective mask with a detachable splash-proof cover and a multi-layer filter membrane, the problems of mask shortage and facial exposure are solved, efficient filtration and low-consumption protection effects are achieved, and the risk of infection is reduced.
Patent Information
- Application Number
- CN202010139690.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-03-03
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2040-03-03
AI Technical Summary
Medical staff face the risk of mask shortages and facial exposure when changing masks during their work, especially when patient secretions splash, the risk of infection increases.
A splash-proof protective mask is designed, including a mask body, an airbag and a detachable filtration system. The filtration system consists of a detachable splash-proof cover and a multi-layer filter membrane. Through an inverted connection, the airbag fits tightly against the face to reduce the entry of viruses and bacteria through gaps. The splash-proof cover is detachable and replaceable to reduce mask consumption.
It reduces the consumption of masks, reduces the risk of facial exposure for medical staff, improves the filtering effect, alleviates the shortage of masks, reduces the risk of infection, and improves product utilization.
Smart Images
Figure CN111449316B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of medical protective products, in particular to a splash-proof protective mask. Background Art
[0002] The novel coronavirus has been confirmed to be transmissible from person to person, primarily through respiratory droplets and indirect contact. The dramatic increase in medical staff's workload and the resulting surge in protective equipment usage has led to a shortage of protective gear, particularly masks. During their work, medical staff are often spattered with patient secretions and blood, forcing them to change masks to minimize infection. This exacerbates the mask shortage and increases the risk of facial exposure for medical staff. Summary of the Invention
[0003] The purpose of the present invention is to provide a splash-proof protective mask to solve the problem of shortage of masks and facial exposure of medical staff when changing masks.
[0004] The technical solution adopted by the present invention is: a splash-proof protective mask, including a mask body and a fixing belt, the mask body is a cylindrical structure with openings at both ends, the bottom end of the mask body is fixedly connected to a ring-shaped airbag, the upper end of the mask body is detachably connected to a filtering system, the top end of the filtering system is detachably connected to a splash-proof cover for blocking viruses, bacteria, and secretions, the splash-proof cover is fixedly connected with spaced-apart undercuts along its circumference, and the undercuts are snapped into engagement with the filtering system.
[0005] Preferably, the filtration system includes a horizontally arranged base and a filter membrane, the top of the filter membrane is welded to the bottom of the base as a whole, and the bottom of the base is fixedly connected to a mounting plate along its circumference; a grille is provided on the base above the filter membrane; the inverted end is hook-shaped, and the base is clamped on the inverted hook-shaped end.
[0006] Preferably, a clamping plate is fixedly connected to the inner side wall of the cover body along its circumference, and the clamping plate includes a horizontally arranged boss and a vertically arranged column. The boss and the column are integrally formed, and the clamping plate, the base, and the side wall of the cover body form an installation cavity. An upper clamping strip is provided on the side of the column close to the mounting plate along its circumference, and a lower clamping strip is fixedly connected to the side of the mounting plate close to the upper clamping strip along its circumference. The lower clamping strip corresponds to the upper clamping strip and both are arc-shaped.
[0007] Preferably, the bottom of the base is fixedly connected to a vertically arranged sealing plate along its circumference, the sealing plate is located in the installation cavity, and two placement plates spaced apart up and down are fixedly connected to the side of the sealing plate away from the column, the placement plates are horizontally arranged and their ends are in contact with and connected to the inner wall of the cover, and a sealing ring is interference fit in the cavity formed by the two placement plates, the inner wall of the cover and the sealing plate.
[0008] Preferably, both ends of the bottom of the placement plate located below are provided with dynamic guide slopes for guiding, and the top ends of the two inner side walls of the cover body are provided with fixed guide slopes corresponding to the dynamic guide slopes.
[0009] Preferably, the filtration system includes a fixed plate and a filter membrane, the edge of the filter membrane is welded to the bottom of the fixed plate, a plurality of ventilation holes are opened on the fixed plate, and the fixed plate is plugged into the cover body.
[0010] Preferably, a horizontally arranged mounting seat is fixedly connected to the inner wall of the upper end of the cover body, a plurality of openings are provided at the bottom of the mounting seat, plug holes are provided at intervals on the side wall of the cover body above the mounting seat, and plug blocks corresponding to the plug holes are fixedly connected to the side wall of the fixing plate; an annular groove is provided near the edge of the top of the mounting seat, a card slot corresponding to the groove is provided at the bottom of the fixing plate, and a sealing gasket is interference fit in the groove; the end of the undercut is hook-shaped, and the plug hole is stuck in the hook-shaped end of the undercut.
[0011] Preferably, a limiting opening is symmetrically opened on the side wall of the cover body above the mounting seat, a limiting block corresponding to the limiting opening is fixedly connected to the side wall of the fixing plate, a protrusion is provided on the side wall of the cover body at the limiting opening, and the protrusion is in contact and connected with the limiting block; the ventilation openings are distributed radially.
[0012] Preferably, the bottom end of the mask body is fixedly connected to a fitting platform, and the airbag and the fitting platform are bonded as one body; a one-way valve for inflating the airbag is fixedly connected to the side of the fitting platform away from the airbag, and the one-way valve is communicated with the airbag; the airbag includes a nose bridge fitting portion that fits the bridge of the nose, and a face fitting portion that fits the face and is symmetrically arranged, the nose bridge fitting portion is located at the upper end of the airbag, and the face fitting portion is located at the lower half of the airbag, and the face fitting portion is provided with a protrusion.
[0013] Preferably, the filter membrane includes a first filter layer, a second filter layer, a third filter layer, a fourth filter layer, and a fifth filter layer which are sequentially bonded from the outside to the inside, and the five filter layers are prepared by pressing together at their edges using ultrasonic welding technology; the first filter layer and the fifth filter layer are both composed of non-woven fabrics, the second filter layer and the third filter layer are both composed of meltblown fabrics, and the fourth filter layer is composed of electrostatic cotton; or, the first filter layer and the fifth filter layer are both composed of non-woven fabrics, the second filter layer and the fourth filter layer are both composed of electrostatic cotton, and the third filter layer is composed of meltblown fabric.
[0014] The present invention, employing the above-described technical solution, has the following advantages: The cylindrical mask body increases the area of the filter membrane, reducing the ventilation resistance of the filter membrane and increasing the volume of air entering the mask body. The detachable filter system facilitates user replacement, reducing mask consumption. The detachable splash guard prevents patient secretions from splashing onto the filter membrane. If secretions splash onto the splash guard, the user can remove the splash guard by flipping it upside down for replacement. This reduces the risk of facial exposure and further reduces mask usage, alleviating mask shortages. The airbag tightly fits the user's face, providing a good seal. This prevents airborne contaminants such as bacteria and viruses from entering the medical worker's nasal or oral cavity through the gap between the mask and the face, and also prevents pressure injuries from the airbag on the face caused by prolonged mask wearing. Furthermore, the specifications of the filter membrane bonded to the filter system can be selected according to different usage scenarios, allowing users to select the appropriate filter system based on their needs, thereby improving product utilization. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the present invention;
[0016] Figure 2 It is a schematic structural diagram of the splash-proof cover of the present invention;
[0017] Figure 3 Schematic diagram of the connection relationship between the filtration system, the anti-splash cover and the cover body of the first embodiment;
[0018] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle;
[0019] Figure 5 Schematic diagram of the connection between the filter system and the cover body of the second embodiment;
[0020] Figure 6 yes Figure 5 sectional view of
[0021] Figure 7 It is a schematic structural diagram of the airbag of the present invention;
[0022] Figure 8 It is a schematic structural diagram of the filter membrane of the present invention. DETAILED DESCRIPTION
[0023] Example 1
[0024] A splash-proof protective mask, such as Figure 1 and Figure 2 、 Figure 3As shown, the device comprises a cover body 1 and a fixing belt (not shown). The cover body 1 is a cylindrical structure with two open ends. An annular air bag 2 is fixedly connected to the bottom end of the cover body 1. The upper end of the cover body is detachably connected to a filter system. The filter system includes a horizontally arranged base 3 and a filter membrane 4. The edge of the top of the filter membrane 4 is provided with an annular weld, which is welded integrally to the bottom of the base 3. A grille 6 is provided on the base 3 above the filter membrane 4. A splash-proof cover 14 for blocking viruses, bacteria, secretions, and other substances is detachably connected to the top of the base 3. The splash-proof cover 14 is fixedly connected to spaced undercuts 15 along its circumference. The undercuts 15 are located at the edge of the outer wall, on the inner wall, or on the side wall of the splash-proof cover 14. The ends of the undercuts 15 are hooked, and the base 3 is clamped to the hooked ends of the undercuts 15.
[0025] like Figure 3 and Figure 4 As shown, the bottom of the base 3 is fixedly connected to a mounting plate 5 along its circumference, and the inner side wall of the cover body 1 is fixedly connected to a clamping plate along its circumference. The clamping plate includes a horizontally arranged boss 7 and a vertically arranged column 8. The boss 7 and the column 8 are integrally formed. An upper clamping strip 9 is fixedly connected to the side of the column 8 close to the mounting plate 5 along its circumference, and a lower clamping strip 10 corresponding to the upper clamping strip 9 is fixedly connected to the side of the mounting plate 5 close to the upper clamping strip 9 along its circumference. Both the upper clamping strip 9 and the lower clamping strip 10 are arc-shaped, and the lower side of the upper clamping strip 9 is in contact with the upper side of the lower clamping strip 10. The clamping plate, base 3, and the sidewall of the housing 1 form a mounting cavity. A vertically mounted sealing plate 11 is fixedly connected to the bottom of the base 3 along its circumference. The sealing plate 11 is located within the mounting cavity. Two spaced-apart placement plates 13 are fixedly connected to the side of the sealing plate 11 away from the uprights 8. The placement plates 13 are horizontally arranged, with their ends contacting and connecting with the inner wall of the housing 1. A sealing ring 12 is interference-fitted within the cavity formed by the two placement plates 13, the sealing plate 11, and the inner wall of the housing 1. During use, the sealing plate 11 is aligned with the mounting cavity and pressed downward against the base 3, placing the sealing plate 11 within the mounting cavity. The lower clamping strip 10 is positioned below the upper clamping strip 9, with the two clamping strips 9 engaging each other. Through such a setting, the base 3 is movably connected to the mask body 1, which facilitates the installation, disassembly and replacement of the base 3. During use, the user can replace the base 3 as needed, reducing the consumption of the mask and alleviating the shortage of masks; the setting of the sealing ring 12 prevents air from entering the mask body 1 from the installation cavity without passing through the filter membrane 4, thereby ensuring the filtering effect.
[0026] Furthermore, if Figure 4 As shown, both ends of the bottom of the placement plate 13 at the bottom are provided with dynamic guide slopes 1301 for guiding, and the top ends of the two inner side walls of the cover body 1 are provided with fixed guide slopes 101 corresponding to the dynamic guide slopes 1301. This arrangement facilitates the insertion of the sealing plate 11 into the installation cavity.
[0027] When in use, the inverted buckle 15 of the anti-splash cover 14 is stuck on the base 3, and the anti-splash cover 14 is installed on the base 3. Air enters from the bottom of the anti-splash cover 14 and is filtered through the grille 6 and the filter membrane 4 in sequence to reach the mask body 1. When the anti-splash cover 14 is contaminated and needs to be replaced, the inverted buckle 15 is opened to remove the anti-splash cover 14 and install a new anti-splash cover 14, thereby reducing the risk of infection for the user. Through the detachable setting of the base 3 and the anti-splash cover 14, the user only needs to replace the corresponding anti-splash cover 14 and the base 3, reducing the consumption of masks, not only reducing costs, but also reducing the probability of shortage of protective supplies in the event of an epidemic.
[0028] In order to prevent the anti-splash cover 14 from deforming, a reinforcing rib 16 is fixedly connected to the inner wall of the anti-splash cover 14 .
[0029] The bottom end of the mask body 1 is fixedly connected to a fitting platform 17, and the airbag 2 is bonded to the fitting platform 17 as a whole. A one-way valve 18 for inflating the airbag 2 is fixedly connected to the side of the fitting platform 17 away from the airbag 2. The one-way valve 18 is connected to the airbag 2. The airbag 2 includes a nose fitting portion 19 that fits the bridge of the nose and a face fitting portion 20 that fits the face symmetrically. The nose fitting portion 19 is located at the upper end of the airbag 2, and the face fitting portion 20 is located at the lower half of the airbag 2. The face fitting portion 20 is provided with a raised portion 21. This arrangement ensures that the airbag 2 fits tightly against the face, providing a good seal, preventing airborne contaminants such as bacteria and viruses from entering the medical worker's nasal or oral cavity through the gap between the mask and the face. By filling the airbag 2 with gas, the fit of the airbag 2 against the face is improved, the comfort of the airbag 2 is enhanced, and the medical worker's face is not indented.
[0030] The filter membrane 4 comprises a first filter layer 22, a second filter layer 23, a third filter layer 24, a fourth filter layer 25, and a fifth filter layer 26, which are laminated together from the outside inward. These five filter layers are formed by ultrasonic welding at their edges. The first and fifth filter layers 22 and 26 are both made of non-woven fabric, the second and third filter layers 23 and 24 are both made of meltblown fabric, and the fourth filter layer 25 is made of electrostatic cotton. Alternatively, the first and fifth filter layers 22 and 26 are both made of non-woven fabric, the second and fourth filter layers 23 and 25 are both made of electrostatic cotton, and the third filter layer 24 is made of meltblown fabric. These five filter layers cooperate and support each other, providing primary filtration and deep filtration, thereby enhancing the filtration efficiency. The five filter layers are laminated at their edges using ultrasonic welding, ensuring the tightness of the filter membrane 4 and preventing air from leaking through the sidewalls. This also prevents air from entering the filter membrane 4 from the sidewalls, potentially affecting the filtration efficiency.
[0031] During use, the base 3 is installed on the mask body 1, and the splash-proof cover 14 is installed on the base 3 as needed, then the airbag is inflated, the mask is fixed to the user's head through the fixing belt, and the airbag is adjusted to fit the face; during use, the splash-proof cover 14 or the base 3 can be replaced.
[0032] Example 2
[0033] A splash-proof protective mask includes a mask body 1 and a fixing belt (not shown in the figure). The mask body 1 is a cylindrical structure with two ends open. The bottom end of the mask body 1 is fixedly connected to an annular air bag 2. The upper end of the mask body 1 is detachably connected to a filter system. The top end of the filter system is detachably connected to an anti-splash cover 14 for blocking viruses, bacteria, and secretions. The inner wall of the anti-splash cover 14 is fixedly connected to undercuts 15 arranged at intervals along its circumference. The ends of the undercuts 15 are hook-shaped.
[0034] The filtration system includes a fixed plate 27 and a filter membrane 4. The edge of the filter membrane 4 is welded to the bottom of the fixed plate 27. The fixed plate 27 is provided with several radially distributed ventilation openings 28. A horizontal mounting base 29 is fixedly attached to the inner wall of the upper end of the housing. The base of the mounting base 29 has several openings 30, providing support for the fixed plate 27 and the filter membrane 4. Insertion holes 31 are spaced apart on the sidewall of the housing 1 above the mounting base 29. Insert blocks 32 corresponding to the insertion holes 31 are fixedly attached to the sidewall of the fixed plate 27. Insert blocks 32 insert into the insertion holes 31 to secure the fixed plate 27. An annular groove is defined near the top edge of the mounting base 29. A corresponding slot is defined at the bottom of the fixed plate 27. A sealing gasket 33 is provided within the cavity formed by the groove and slot, creating an interference fit. The sealing gasket 33 is located outside the filter membrane 4 and seals the connection between the filtration system and the housing, ensuring effective air filtration. The anti-splash cover 14 is detachably connected by clamping its inverted buckle 15 in the plug hole 31 above the plug block 32; in order to ensure that air enters the interior of the mask, the inner wall of the anti-splash cover 14 is spaced apart from the mask body 1.
[0035] A limiting opening 34 is symmetrically formed on the side wall of the mask body above the mounting seat 29. A limiting block 35 corresponding to the limiting opening 34 is fixedly connected to the side wall of the fixing plate 27. A protrusion 36 is provided on the side wall of the mask body at the limiting opening 34, and the protrusion 36 contacts and connects with the limiting block 35. The provision of the protrusion 36 and the limiting block 35 limits the vertical position of the fixing plate 27, further ensuring the sealing and firmness of the mask.
[0036] During use, the plug 32 at the end away from the protrusion 36 is inserted into the insertion hole 31. The fixing plate 27 is then pressed downward so that the plug 32 at the other end of the fixing plate 27 is also inserted into the corresponding insertion hole 31. The fixing plate 27 is adjusted so that the protrusion 36 is located below the stop block 35. The splash guard 14 is then locked in the insertion hole 31, the airbag 2 is inflated, and the fixing strap is secured to the user's head. When the filter system needs to be replaced, the protrusion 36 is moved away from the stop block 35, and the plug 32 at the end near the stop block 35 is pulled out of the insertion hole 31. The fixing plate 27 is then pulled upward so that the plug 32 at the other end is also disengaged from the insertion hole 31, thereby removing the fixing plate 27. This device has a simple structure and is easy to operate. It allows for the replacement of the filter system, i.e., the filter membrane 4, thereby improving product utilization and reducing mask consumption and cost.
[0037] The structures of the filter membrane and the airbag in this embodiment are the same as those in the first embodiment and will not be described in detail.
[0038] The above embodiments do not impose any formal restrictions on the shape, material, structure, etc. of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of protection of the technical solution of the present invention.
Claims
1. A splash-proof protective mask, comprising a mask body and a fixing strap, characterized in that: The cover body is a cylindrical structure with two ends open. The bottom end of the cover body is fixedly connected to an annular air bag. The upper end of the cover body is detachably connected to the filter system. The top end of the filter system is detachably connected to a splash-proof cover for blocking viruses, bacteria, and secretions. The splash-proof cover is fixedly connected to spaced undercuts along its circumference, and the undercuts are snap-fitted to the filter system. A reinforcing rib is fixedly connected to the inner wall of the splash-proof cover; The bottom end of the mask body is fixedly connected to a fitting platform, and the airbag and the fitting platform are bonded as one body; a one-way valve for inflating the airbag is fixedly connected to the side of the fitting platform away from the airbag, and the one-way valve is connected to the airbag; the airbag includes a nose bridge fitting portion that fits the nose bridge, and a face fitting portion that fits the face and is symmetrically arranged, the nose bridge fitting portion is located at the upper end of the airbag, and the face fitting portion is located at the lower half of the airbag, and the face fitting portion is provided with a raised portion; The filter system comprises a horizontally arranged base and a filter membrane, the top of the filter membrane is welded to the bottom of the base as a whole, and a grille is provided on the base above the filter membrane; the inverted end is hook-shaped, and the base is clamped in the inverted hook-shaped end; the bottom of the base is fixedly connected to a mounting plate along its circumference; a clamping plate is fixedly connected to the inner side wall of the cover body along its circumference, the clamping plate comprises a horizontally arranged boss and a vertically arranged column, the boss and the column are integrally formed, the clamping plate, the base and the side wall of the cover body form a mounting cavity, an upper clamping strip is provided on the side of the column close to the mounting plate along its circumference, and a lower clamping strip is fixedly connected to the side of the mounting plate close to the upper clamping strip along its circumference, the lower clamping strip corresponds to the upper clamping strip and both are arc-shaped; Alternatively, the filtering system includes a fixed plate and a filter membrane, the edge of the filter membrane is welded to the bottom of the fixed plate, a plurality of ventilation holes are provided on the fixed plate, and the fixed plate is plugged into the cover body; a horizontally arranged mounting seat is fixedly connected to the inner wall of the upper end of the cover body, a plurality of openings are provided at the bottom of the mounting seat, plug holes are provided at intervals on the side wall of the cover body above the mounting seat, and plug blocks corresponding to the plug holes are fixedly connected to the side wall of the fixed plate; an annular groove is provided near the edge of the top of the mounting seat, a card slot corresponding to the groove is provided at the bottom of the fixed plate, and a sealing gasket is interference fit in the groove; the end of the undercut is hook-shaped, and the plug hole is stuck in the hook-shaped end of the undercut.
2. The splash-proof protective mask according to claim 1, characterized in that: The bottom of the base is fixedly connected to a vertically arranged sealing plate along its circumference. The sealing plate is located in the installation cavity. Two placement plates spaced apart up and down are fixedly connected to the side of the sealing plate away from the column. The placement plate is horizontally arranged and its end is in contact with the inner wall of the cover. A sealing ring is interference fit in the cavity formed by the inner wall of the cover, the sealing plate, and the two placement plates.
3. The splash-proof protective mask according to claim 2, characterized in that: Both ends of the bottom of the placement plate located below are provided with dynamic guide inclined surfaces for guiding, and the top ends of the two inner side walls of the cover body are provided with fixed guide inclined surfaces corresponding to the dynamic guide inclined surfaces.
4. The splash-proof protective mask according to claim 1, characterized in that: A limit opening is symmetrically provided on the side wall of the cover body above the mounting seat, a limit block corresponding to the limit opening is fixedly connected to the side wall of the fixing plate, a protrusion is provided on the side wall of the cover body at the limit opening, and the protrusion is in contact with the limit block; the ventilation openings are distributed radially.
5. The splash-proof protective mask according to claim 1, characterized in that: The filter membrane includes a first filter layer, a second filter layer, a third filter layer, a fourth filter layer, and a fifth filter layer which are sequentially bonded from the outside to the inside. The five filter layers are prepared by pressing together at their edges using ultrasonic welding technology; the first filter layer and the fifth filter layer are both composed of non-woven fabrics, the second filter layer and the third filter layer are both composed of meltblown fabrics, and the fourth filter layer is composed of electrostatic cotton; or, the first filter layer and the fifth filter layer are both composed of non-woven fabrics, the second filter layer and the fourth filter layer are both composed of electrostatic cotton, and the third filter layer is composed of meltblown fabric.