CN212545686U - Novel protective mask - Google Patents
Novel protective mask Download PDFInfo
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- CN212545686U CN212545686U CN202020755275.7U CN202020755275U CN212545686U CN 212545686 U CN212545686 U CN 212545686U CN 202020755275 U CN202020755275 U CN 202020755275U CN 212545686 U CN212545686 U CN 212545686U
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Abstract
The utility model discloses a novel protective mask, which comprises a mask shell, wherein the overall outline of the mask shell is consistent with the face of a person, a sealing air bag used for sealing the mask shell to the face of the user is arranged on the periphery of the bottom of the mask shell, an air space is formed between the mask shell and the face of the user, an air outlet is arranged in the middle of the mask shell, and a filtering component is arranged at the air outlet; the mask body is detachably arranged in the mask shell, the size of the mask body is matched with the size of the mouth and nose of a person, the mask body is made of soft elastic materials, one side, close to the face of the user, of the mask body is taken as the inner side, the tail part of the inner side of the mask body is arc-shaped and curls towards the inner side face of the mask body, and the periphery of the tail part of the inner side of the mask body is attached to the face of the user; the mask body is provided with a ventilation port which is communicated with the filtering component. The utility model discloses can solve a ray of personnel protective tool of hospital and wear loaded down with trivial details, sealed unstable, wear for a long time and can appear crushing uncomfortable problem.
Description
Technical Field
The utility model relates to a protective articles field especially relates to a novel protective face mask.
Background
The risk of infection is great when the doctor examines for the patient, sees a doctor, in order to protect the healthy of the medical personnel of first line, need to wear protective device. At present, clinical medical personnel head protection mainly is through gauze mask, goggles, face guard mode, and gauze mask and goggles only can protect single position, and wear the process loaded down with trivial details, and sealed unstable can appear seriously crushing wound to wear for a long time, and the face guard is half open architecture, only can block the place ahead droplet splash, can not provide inclosed safe space for the user. In addition, the existing masks have consistent size and specification, cannot adapt to different face shapes, have reduced protection effect of deformed masks, and also bring discomfort to wearers.
Disclosure of Invention
The utility model provides a novel protective face mask to it is loaded down with trivial details to solve a ray of personnel protective tool of hospital and wear, and is sealed unstable, wears for a long time and can appear crushing uncomfortable problem.
The technical scheme adopted by the utility model to solve the above problems is to provide a novel protective mask, which comprises a mask shell, wherein the whole outline of the mask shell is consistent with the face of a person, a sealing air bag for sealing the mask shell to the face of the user is arranged on the periphery of the bottom of the mask shell, an air space is formed between the mask shell and the face of the user, an air outlet is arranged in the middle of the mask shell, and a filtering component is arranged at the air outlet;
the mask body is detachably arranged in the mask shell, the size of the mask body is matched with the size of the mouth and nose of a person, the mask body is made of soft elastic materials, one side, close to the face of the user, of the mask body is taken as the inner side, the tail part of the inner side of the mask body is arc-shaped and curls towards the inner side face of the mask body, and the periphery of the tail part of the inner side of the mask body is attached to the face of the user; the mask body is provided with a ventilation port which is communicated with the filtering component.
Preferably, the gauze mask body passes through the cutting ferrule and can dismantle the gas outlet department of connection at the face mask shell, and the cutting ferrule includes outer ring cover and the inner ring that sets up with the axial, is equipped with installation draw-in groove between outer ring cover and the inner ring, and the department of taking a breath of the gauze mask body is connected with the snap ring, and the snap ring joint is in installation draw-in groove, and outer ring cover cup joints in the gas outlet department of face mask shell.
Preferably, the inner ring of the cutting sleeve is radially provided with a first positioning groove, the snap ring is provided with a first protrusion, the first protrusion is installed in the first positioning groove in a matched mode, the outer ring sleeve of the cutting sleeve is axially provided with a second positioning groove, the air outlet of the mask shell is inwards provided with a connecting ring, the outer ring sleeve is connected to the connecting ring in a sleeved mode, and the connecting ring is provided with a second protrusion matched with the second positioning groove.
Preferably, a connecting port is formed in the mask shell, the connecting port is connected with an air supply device through an air inlet pipe or sealed through a blocking cover, and a one-way valve is mounted on the mask body.
Preferably, the check valve includes elastic membrane and a plurality of inlet port, and the elastic membrane sets up in the inlet port below, and when supplying air in the face mask shell, the elastic membrane separates with the inlet port, and when the user exhales outward, the elastic membrane covers and blocks off the inlet port.
Preferably, the mask shell connecting port is provided with a short connecting pipe, one end of the blocking cover is open and can be detachably and fixedly connected to the short connecting pipe, and the other end of the blocking cover is of an integrated sealing structure or is sealed through a blocking filter element.
Preferably, filtering component includes filtration membrane and crosses the filter lid, crosses the filter lid including crossing the filter lid body, crosses the filter lid body and adopts the netted structure that forms of connecting in many muscle positions, forms first air vent between the different muscle positions respectively, first air vent is covered with whole filter lid body, crosses the filter lid body and passes through interference fit to connect on the go-between of mask shell gas outlet department, crosses the surface mounting who crosses the filter lid body and has filtration membrane.
Preferably, the outer side of the filter cover body is also provided with an anti-spraying cover; the periphery of the filter cover body is outwards connected with an annular step, the filter membrane covers the upper surface of the filter cover body and is fixedly connected above the annular step, a plurality of clamping columns are arranged on the annular step at intervals, a second vent hole is formed between every two adjacent clamping columns, and the top ends of the clamping columns are in a hook shape; the inner wall periphery of the anti-spraying cover is provided with a plurality of buckling parts used for being matched with the filtering cover, and the buckling parts are matched and buckled with the clamping columns on the filtering cover body.
Preferably, the buckling part is provided with an arc-shaped clamping ridge, the arc-shaped clamping ridge is clamped at the hook-shaped end of the clamping column, and the inner wall of the anti-spraying cover is connected with a plurality of limiting bosses for limiting the relative distance between the anti-spraying cover and the filter cover.
Preferably, the lower part of the filtering cover body is provided with a ring groove, a rubber ring is arranged in the ring groove, the rubber ring is wound on the periphery of the filtering cover body, the ring groove is arranged on the periphery of the connecting ring side wall at the air outlet of the mask shell, and the rubber ring is in interference fit with the clamping groove in an extruding mode.
Preferably, the inner tail of the mask body is suspended and the thickness of the inner tail of the mask body becomes thinner gradually from the outside to the inside.
Adopt above-mentioned technical scheme, the utility model has the advantages of it is following:
1. the utility model can combine the functions of the mouth mask and the eye protection screen, can replace the use of the mouth mask, the goggles and the face protection screen, the contact area of the sealing air bag with the face of the person can be increased under the condition of ensuring the sealing performance, the problem of the present face crush injury can be solved well, and simultaneously, the wearing workload of medical care personnel is reduced, and related medical consumables are saved;
2. the utility model discloses be provided with the mask body simultaneously in the face guard shell, the user carries out the air exchange through the mask body and filtering component and the external world, and the face guard shell can protect user's eye, and the setting of the mask body can avoid the influence sight of fogging on the face guard shell simultaneously. Just the utility model discloses a mask body can avoid with facial extrusion deformation, neither influences the leakproofness between mask body and the user face, can be according to user's different facial form adjustment again and wear the comfort level.
3. The utility model discloses be not limited to a mode of use, can use under passive state, also can use under active state, the suitability is strong, under the active state, air supply arrangement can initiatively send into suitable fresh air for the user, the intake pipe sets up the upper portion intermediate position at the face guard shell, can form the air curtain at the face, it takes place to avoid atomization phenomenon, can keep the pressure-fired state through air supply arrangement in the gas space between face guard shell and the user face, user's department of breathing is kept apart with outside operation space completely, user's personal safety has been protected effectively, improve simultaneously and breathe the comfort level, and because the existence of check valve, the air of user's exhalation only can lead to the outside through filter assembly, avoid not filterable gaseous exhalation.
4. The filter cover body is sealed and fixed through interference fit with the air outlet of the mask shell, the sealing is convenient and reliable, the filter cover is simple and practical, and when the filter assembly needs to be replaced, the filter cover can be directly taken off from the air outlet of the mask shell, and the filter cover is convenient to disassemble.
5. The anti-spraying cover is arranged on the outer side of the filter cover, the anti-spraying cover is connected with the filter cover in a buckling mode, a second vent hole for gas exchange is reserved between the anti-spraying cover and the buckling position of the filter cover, the anti-spraying cover achieves the anti-spraying effect, and smooth circulation of gas is facilitated.
Drawings
Fig. 1 is a schematic exploded view of the present invention;
fig. 2 is a schematic perspective view of the present invention;
fig. 3 is one of the schematic sectional structural diagrams of the present invention;
FIG. 4 is an enlarged partial schematic view of FIG. 3 at A;
fig. 5 is a second schematic sectional view of the present invention;
FIG. 6 is a schematic view of a portion of the enlarged structure at B in FIG. 4;
FIG. 7 is a schematic structural view of one of the check valves of the present invention;
FIG. 8 is a schematic view of the check valve of FIG. 7 in an open state (the direction of the arrows in the figure is the gas flow direction);
FIG. 9 is a schematic structural view of another check valve of the present invention;
FIG. 10 is a schematic view of the installation of the check valve of FIG. 9;
fig. 11 is a schematic structural view of the middle blocking cover of the present invention;
FIG. 12 is a schematic view of the installation of the block-out cover of FIG. 11;
FIG. 13 is a schematic view of another alternative closure cap of the present invention;
fig. 14 is a schematic view of the installation of the block-out cover of fig. 13.
Detailed Description
In order to make the technical purpose, technical solutions and advantageous effects of the present invention more clear, the technical solutions of the present invention are further described below with reference to fig. 1 to 14 and specific embodiments.
The first embodiment is as follows:
as shown in fig. 1 to 6, the novel protective mask of the present invention comprises a mask shell 1, the whole contour of the mask shell 1 is consistent with the face of a person, a sealing air bag 2 for sealing the mask shell 1 to the face of the user is connected to the periphery of the bottom of the mask shell 1, an air space is formed between the mask shell 1 and the face of the user, a first fixing strap 25 is arranged on the mask shell 1, the user wears the head of the user through the first fixing strap 25, an air outlet 3 is arranged in the middle of the mask shell 1, and a filtering component is arranged at the air outlet 3;
a mask body 4 is detachably mounted in the mask shell 1, the size of the mask body 4 is matched with the size of the mouth and nose of a person, the mask body 4 is made of soft elastic materials such as silica gel, rubber, soft PVC and the like, one side, close to the face of the user, of the mask body 4 is taken as the inner side, the tail of the inner side of the mask body 4 is arc-shaped and curls towards the inner side face of the mask body 4, and the circumference of the tail of the inner side of the mask body 4 is attached to the face of the user; the mask body 4 is provided with a ventilation port 5, and the ventilation port 5 is communicated with the filtering component. The air outlet 3 communicates with a ventilation opening 5 of the mask body.
The user carries out the air exchange through the mask body 4 and filtering component and external world, and mask shell 1 can protect user's eye, and the setting of the mask body 4 can avoid fogging on mask shell 1 to influence the sight simultaneously.
Furthermore, in one embodiment of the present invention, the position of the ventilation opening 5 is the head of the mask body 4, the contact part of the mask body 4 and the face of the user is the tail of the mask body 4, the inner tail of the mask body 4 is suspended, and the thickness of the inner tail of the mask body 4 becomes thinner gradually from the outside to the inside.
The mask body 4 is made of soft elastic material, when the mask is worn, if the face of a user is relatively large, the thin part of the tail part of the inner side of the mask body 4 is pressed, on one hand, the thin mask body 4 can reduce the pressing force to a certain extent, on the other hand, the structure leaves sufficient space to prevent the mask body 4 from being extruded and deformed with the face, so that the breathing is prevented from being influenced, and if the tail part of the inner side of the mask body 4 is thick, the space between the tail part and the surface of the mask body 4 is insufficient, the adjustable space is also insufficient; therefore, the above design does not affect the sealing performance between the mask body 4 and the face of the user, and can adjust the wearing comfort according to different face shapes of the user.
Furthermore, in one embodiment of the present invention, both sides of the nose wing part of the mask body 4 are recessed, and the nose wing part of the mask body 4 fits the nose more, so as to reduce the volume of the nose part of the mask body 4, facilitate the use of the glasses wearer, and avoid blocking the sight;
furthermore, in one embodiment of the present invention, the mask body 4 is provided with a stiffener, which can enhance the strength of the mask body 4, avoid collapse and deformation when worn, and enhance the wearability; specifically, the reinforcing ribs may be provided at positions of the mask body 4 corresponding to the cheeks of the user and at positions of the mask body 4 corresponding to the bridge of the nose of the user.
Further, the utility model discloses in one of them embodiment, the gauze mask body 4 can dismantle the gas outlet 3 department of connection at mask shell 1 through the cutting ferrule, and the cutting ferrule includes outer loop cover 6 and the inner ring 7 that sets up with the axial, is equipped with installation slot between outer loop cover 6 and the inner ring 7, and 5 departments of taking a breath of gauze mask body 4 are connected with snap ring 8, and the snap ring 8 joint is in installation slot, and outer loop cover 6 cup joints 3 departments of gas outlet at mask shell 1.
Further, in an embodiment of the present invention, on the basis of the above structure, the inner ring 7 of the cutting sleeve has a first positioning groove along the radial direction, the snap ring 8 has a first protrusion 9 thereon, the first protrusion 9 is installed in the first positioning groove in a matching manner, the outer ring sleeve 6 of the cutting sleeve has a second positioning groove 10 thereon along the axial direction, the gas outlet 3 of the mask shell 1 is inwardly provided with a connection ring 11, the outer ring sleeve 6 is sleeved on the connection ring 11, and the connection ring 11 is provided with a second protrusion 26 matched with the second positioning groove 10.
When the first protrusions 9 are provided, two first protrusions 9, one larger and one smaller, may be provided to prevent inversion when connecting the mask body 4 and the ferrule. The second protrusion on the connecting ring 11 can play a positioning role after the sleeve chuck is sleeved on the connecting ring 11, and meanwhile, the sleeve chuck is prevented from rotating.
In the above embodiment, the utility model discloses a novel protective facial mask is passive form, need not external air supply arrangement 12 and can use.
Example two:
on the basis of the first embodiment, a connection port is formed in the mask shell 1, the connection port can be arranged at the top of the mask shell 1 to avoid influencing the visual field, the connection port is connected with the air supply device 12 through an air inlet pipe or sealed through a blocking cover 28, and the mask body 4 is provided with the one-way valve 13.
When the connector department passes through intake-tube connection air supply arrangement 12, the utility model discloses a novel protective facial mask is active form, installs the second fixed band on the air supply arrangement 12, and air supply arrangement 12 is fixed in user's waist or arm through the second fixed band.
When the mask shell 1 is used together with the air supply device 12, the external air supply device 12 actively supplies air into the mask shell 1, the air firstly enters the mask shell 1 and then enters the mask body 4 through the one-way valve 13 to be breathed by a user, and due to the existence of the one-way valve 13, the air exhaled by the user only passes through the filtering component to be led to the outside, so that the exhalation of the unfiltered air is avoided.
As shown in fig. 7 to 10, the check valve includes an elastic membrane 16 and a plurality of air inlet holes 15, the elastic membrane 16 is disposed below the air inlet holes 15, when air is supplied into the mask shell 1, the elastic membrane 16 is separated from the air inlet holes 15, and when a user exhales outwards, the elastic membrane 16 covers and blocks the air inlet holes 15.
In the structure of the one-way valve, the air inlet can be directly arranged on the mask body 4, or an upper cover 14 with the air inlet can be independently arranged, the mask body 4 is provided with a mounting hole, the upper cover 14 is fixed at the mounting hole of the mask body 4, and the elastic membrane 16, such as a silicon membrane, is arranged below the air inlet 15. The elastic membrane 16 is provided with a connecting column which is clamped on the mask body 4 or the upper cover 14.
The check valve 13 can also be a structure that an upper cover 14 and a lower cover are buckled, the lower cover is arranged below the upper cover 14, the elastic membrane 16 is in an annular sheet structure, an air inlet of the upper cover 14 is connected with an outer ring of the elastic membrane 16, the other end of the elastic membrane 16 can be attached to or separated from the air inlet 15 along with the air flow direction, and an air duct is arranged between the upper cover 14 and the lower cover.
When not using air supply arrangement, it is sealed through shutoff lid 28 in connector department, face guard shell connector department installs connecting stub 27, connecting stub 27 both can integrated into one piece at face guard shell connector department, also can dismantle fixed connection in face guard shell connector department, the uncovered fixed connection of one end of shutoff lid 28 can be dismantled on connecting stub 27, concrete connection mode can be threaded connection, grafting, screw connection etc. the other end of shutoff lid 28 is sealed for a body seal structure or through shutoff filter core 29.
As shown in fig. 11 to 14, the structure of the blocking cover 28 may be an integral structure with one end open and the other end closed, or both ends open, and the opening at the end far from the mask shell 1 is provided with a blocking filter element 29 for sealing, and the blocking filter element 29 may be the same as the structure of the filtering membrane 17 described below.
In the second embodiment, the utility model discloses a novel protective facial mask is active form, after having installed the check valve on the mask body, can initiatively supply air for the user during external air supply arrangement, can use the connector and the outside isolation of shutoff lid 28 on with the face guard shell when not external air supply arrangement, does not influence the eye-protection function of face guard shell.
Synthesize above-mentioned embodiment, the utility model discloses three kinds of use forms have at least, the suitability is strong, and the facilitate promotion is used.
Further, the utility model discloses in one of them embodiment, filtering component includes filtration membrane 17 and crosses the filter cover, crosses the filter cover including crossing filter cover body 18, crosses filter cover body 18 and adopts the netted structure of connecting and forming in many muscle positions, forms first air vent between the different muscle positions respectively, first air vent is covered with whole filter cover body 18, and this structure both is convenient for admit air, can guarantee overall structure's intensity again, crosses filter cover body 18 and connects on the go-between 11 of 1 gas outlet 3 department of face guard shell through interference fit, crosses the surface mounting who crosses filter cover body 18 there is filtration membrane 17.
The filtering membrane 17 can be of a three-layer structure, a four-layer structure, a five-layer structure and the like, the outermost side and the innermost filtering layer of the filtering membrane 17 are made of non-woven fabrics, the middle filtering layer is made of electrostatic cotton or melt-blown cloth or the combination of the electrostatic cotton and the melt-blown cloth, when the filtering membrane 17 is of the five-layer structure, the filtering membrane comprises a first filtering layer, a second filtering layer, a third filtering layer, a fourth filtering layer and a fifth filtering layer which are sequentially attached from outside to inside, the first filtering layer and the fifth filtering layer are respectively formed by non-woven fabrics, the second filtering layer and the fourth filtering layer are formed by the electrostatic cotton, and the third filtering.
Furthermore, in one embodiment of the present invention, an anti-spraying cover 19 is further installed outside the filtering cover body 18; the periphery of the filter cover body 18 is outwards connected with an annular step, the filter membrane 17 covers the upper surface of the filter cover body 18 and is fixedly connected above the annular step, a plurality of clamping columns 20 are arranged on the annular step at intervals, a second vent hole is formed between every two adjacent clamping columns 20, and the top ends of the clamping columns 20 are hook-shaped; the inner wall periphery of the anti-spraying cover 19 is provided with a plurality of buckling parts which are matched with the filter cover, and the buckling parts are matched and buckled with the clamping columns 20 on the filter cover body 18.
The filter cover body 18 is provided with a first vent hole, a second vent hole is formed between two adjacent clamping columns 20, when the gas in the mask body 4 is exhaled, the gas firstly passes through the first vent hole, then passes through the filter membrane 17, reaches the space between the filter membrane 17 and the blowout prevention cover 19 after being filtered, and finally is exhausted to the outside through the second vent hole, so that the exchange of the gas inside and outside is realized.
Furthermore, in one embodiment of the present invention, the fastening portion is provided with an arc-shaped rib 21, the arc-shaped rib 21 is clamped at the hook-shaped end of the clamping column 20, and the inner wall of the blowout-preventing cover 19 is connected with a plurality of limiting bosses 22 for limiting the relative distance between the blowout-preventing cover 19 and the filter cover. The distance between the bottom surface of the limiting boss 22 and the upper surface of the arc-shaped clamping ridge 21 is slightly larger than the height of the hook-shaped end of the clamping column 20, so that the arc-shaped clamping ridge 21 and the hook-shaped end of the clamping column 20 can be matched and fastened, and the anti-spraying cover 19 is prevented from greatly moving along the direction of the clamping column 20.
Furthermore, in one embodiment of the present invention, the outer side wall of the hook-shaped end of the locking pillar 20 is provided with an upper guiding inclined plane, the lower side of the arc-shaped locking rib 21 is provided with a lower guiding inclined plane, and the upper guiding inclined plane is matched with the lower guiding inclined plane. When the blowout prevention cover 19 is buckled to the filter cover, the lower guide inclined plane of the blowout prevention cover 19 is firstly contacted and guided by the upper guide inclined plane, then the hook-shaped end of the clamping column 20 is buckled with the arc-shaped clamping rib 21, and the structure of the upper guide inclined plane and the lower guide inclined plane ensures that the installation of the blowout prevention cover 19 is more convenient and reliable.
Further, in one embodiment of the present invention, the distance from the top surface of the hook-shaped end of the clamping column 20 to the annular step is greater than the distance from the top surface of the filtering membrane 17 to the annular step, the blowout prevention cover 19 is of a concave structure, and a gas flow space is formed between the blowout prevention cover 19 and the filtering membrane 17.
Further, the utility model discloses in one of them embodiment, the both sides difference fixedly connected with of buckling part are used for avoiding card post 20 to follow circumferential movement to the spacing limit stop 23 of card post 20 circumference, guarantee prevent spouting the connection reliability of lid 19.
Further, the utility model discloses in one of them embodiment, the annular has been seted up to the lower part border of crossing filter cover body 18, installs rubber ring 24 in the annular, and the rubber ring 24 winding is equipped with the card ditch in the periphery of crossing filter cover body 18, the go-between 11 lateral wall borders of face guard shell 1 gas outlet 3 department, and rubber ring 24 passes through extruded mode and card ditch interference fit, realizes crossing the back-off between filter cover and the face guard shell 1 and seals.
The utility model provides a face guard shell 1 can adopt transparent polycarbonate material, and during the installation filtering component, earlier install filtration membrane 17 in filtering the lid, will filter again and cover body 18 through the go-between 11 interference fit realization sealed fixed with face guard shell 1 gas outlet 3 department. After the filter cover is installed, the blowout prevention cover 19 is aligned with the filter cover to be buckled, wherein the buckling part on the blowout prevention cover 19 is matched with the clamping column 20 on the filter cover, and the limiting boss 22 on the blowout prevention cover 19 can limit. The blowout prevention cover is buckled with the filter cover, and a second vent hole for gas exchange is reserved between the buckling part of the blowout prevention cover 19 and the filter cover, so that the function of splashing prevention is realized through the blowout prevention cover 19, and smooth circulation of gas is facilitated.
The utility model discloses in, filter the mode of lid body 18 through 24 extrusion of rubber ring and back-off and the sealed fixed of gas outlet 3 of face guard shell 1, it is sealed convenient and reliable, when needs replacement filter assembly, directly will filter the lid from the gas outlet 3 of face guard shell 1 extract can, it is convenient to dismantle.
The above embodiments are not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification of the above embodiments.
Claims (10)
1. The utility model provides a novel protective mask, includes the face guard shell, the whole profile of face guard shell is unanimous with people's face, its characterized in that: a sealing air bag used for sealing the mask shell to the face of a user is arranged on the periphery of the bottom of the mask shell, an air space is formed between the mask shell and the face of the user, an air outlet is arranged in the middle of the mask shell, and a filtering component is arranged at the air outlet;
the mask body is detachably arranged in the mask shell, the size of the mask body is matched with the size of the mouth and nose of a person, the mask body is made of soft elastic materials, one side, close to the face of the user, of the mask body is taken as the inner side, the tail part of the inner side of the mask body is arc-shaped and curls towards the inner side face of the mask body, and the periphery of the tail part of the inner side of the mask body is attached to the face of the user; the mask body is provided with a ventilation port which is communicated with the filtering component.
2. A novel protective mask according to claim 1, wherein: the gauze mask body passes through the cutting ferrule and can dismantle the gas outlet department of connection at the face mask shell, and the cutting ferrule includes outer ring cover and the inner ring that sets up with the axial, is equipped with installation draw-in groove between outer ring cover and the inner ring, and the department of taking a breath of the gauze mask body is connected with the snap ring, and the snap ring joint is in installation draw-in groove, and outer ring cover cup joints the gas outlet department at the face mask shell.
3. A novel protective mask according to claim 2, wherein: the inner ring of the cutting sleeve is radially provided with a first positioning groove, the clamping ring is provided with a first bulge, the first bulge is installed in the first positioning groove in a matched mode, the outer ring sleeve of the cutting sleeve is axially provided with a second positioning groove, the air outlet of the mask shell is inwards provided with a connecting ring, the outer ring sleeve is connected onto the connecting ring in a sleeved mode, and the connecting ring is provided with a second bulge matched with the second positioning groove.
4. A novel protective mask according to claim 1, wherein: the mask shell is provided with a connecting port, the connecting port is connected with an air supply device through an air inlet pipe or sealed through a plugging cover, and the mask body is provided with a one-way valve.
5. A novel face shield according to claim 4, characterised in that: the check valve includes elastic membrane and a plurality of inlet port, and the elastic membrane setting is in the inlet port below, and when supplying air in the face mask shell, elastic membrane and inlet port separation, when the user exhales outwards, the elastic membrane covers and the shutoff inlet port.
6. A novel face shield according to claim 4, characterised in that: the junction pipe is installed to the face guard shell connector, and the uncovered fixed connection that can dismantle of one end of shutoff lid is on the junction pipe, and the other end of shutoff lid is sealed structure as an organic whole or seals through the shutoff filter core.
7. A novel face shield according to any one of claims 3 to 6, wherein: the filtering component comprises a filtering membrane and a filtering cover, the filtering cover comprises a filtering cover body, the filtering cover body adopts a structure formed by connecting a plurality of rib positions in a net shape, first air holes are formed between different rib positions respectively, the whole filtering cover body is full of the first air holes, the filtering cover body is connected to a connecting ring at the air outlet of the face mask shell through interference fit, and the outer surface of the filtering cover body is provided with the filtering membrane.
8. The novel protective mask as claimed in claim 7, wherein: the outer side of the filter cover body is also provided with an anti-spraying cover; the periphery of the filter cover body is outwards connected with an annular step, the filter membrane covers the upper surface of the filter cover body and is fixedly connected above the annular step, a plurality of clamping columns are arranged on the annular step at intervals, a second vent hole is formed between every two adjacent clamping columns, and the top ends of the clamping columns are in a hook shape; the inner wall periphery of the anti-spraying cover is provided with a plurality of buckling parts used for being matched with the filtering cover, and the buckling parts are matched and buckled with the clamping columns on the filtering cover body.
9. A novel protective mask according to claim 8, wherein: the buckling part is provided with an arc-shaped clamping ridge which is clamped at the hook-shaped end of the clamping column, and the inner wall of the anti-spraying cover is connected with a plurality of limiting bosses used for limiting the relative distance between the anti-spraying cover and the filter cover.
10. The novel protective mask as claimed in claim 7, wherein: the annular groove is formed in the periphery of the lower portion of the filter cover body, the rubber ring is installed in the annular groove and wound on the periphery of the filter cover body, the clamping groove is formed in the periphery of the side wall of the connecting ring at the air outlet of the mask shell, and the rubber ring is in interference fit with the clamping groove in an extrusion mode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020755275.7U CN212545686U (en) | 2020-05-09 | 2020-05-09 | Novel protective mask |
| PCT/CN2020/093182 WO2021179444A1 (en) | 2020-03-11 | 2020-05-29 | New-type protective mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020755275.7U CN212545686U (en) | 2020-05-09 | 2020-05-09 | Novel protective mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212545686U true CN212545686U (en) | 2021-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020755275.7U Active CN212545686U (en) | 2020-03-11 | 2020-05-09 | Novel protective mask |
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| CN (1) | CN212545686U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113527856A (en) * | 2021-06-24 | 2021-10-22 | 浙江白鹿源科技有限公司 | Self-cleaning antibacterial engineering plastic substrate and forced air supply mask prepared from same |
| IT202100005267A1 (en) * | 2021-03-05 | 2022-09-05 | Oldrati Guarnizioni Ind Spa | DEVICE FOR MECHANICAL VENTILATION OR FOR THE PROTECTION OF A USER |
-
2020
- 2020-05-09 CN CN202020755275.7U patent/CN212545686U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202100005267A1 (en) * | 2021-03-05 | 2022-09-05 | Oldrati Guarnizioni Ind Spa | DEVICE FOR MECHANICAL VENTILATION OR FOR THE PROTECTION OF A USER |
| WO2022185291A1 (en) * | 2021-03-05 | 2022-09-09 | Oldrati Guarnizioni Industriali S.P.A. | System and method for making a screen for c-pap medical device or personal protection device using a single mold |
| CN113527856A (en) * | 2021-06-24 | 2021-10-22 | 浙江白鹿源科技有限公司 | Self-cleaning antibacterial engineering plastic substrate and forced air supply mask prepared from same |
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