CN109464760B - Respirator frame and respirator - Google Patents
Respirator frame and respirator Download PDFInfo
- Publication number
- CN109464760B CN109464760B CN201710805913.4A CN201710805913A CN109464760B CN 109464760 B CN109464760 B CN 109464760B CN 201710805913 A CN201710805913 A CN 201710805913A CN 109464760 B CN109464760 B CN 109464760B
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- Prior art keywords
- frame
- respirator
- layer
- user
- sealing layer
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- 239000010410 layer Substances 0.000 claims description 108
- 238000007789 sealing Methods 0.000 claims description 65
- 239000000945 filler Substances 0.000 claims description 29
- 239000000499 gel Substances 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 23
- 210000000988 bone and bone Anatomy 0.000 claims description 19
- 230000001815 facial effect Effects 0.000 claims description 14
- 239000004744 fabric Substances 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 4
- 239000000017 hydrogel Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 238000005187 foaming Methods 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 229920001296 polysiloxane Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000035515 penetration Effects 0.000 description 4
- -1 polysiloxane Polymers 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 231100000263 cytotoxicity test Toxicity 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/10—Respiratory apparatus with filter elements
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
- A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
Abstract
A respirator frame includes a filter assembly and a seal assembly. The filter assembly includes a first frame and a second frame that are removably coupled together. The contour of the first frame is formed in a shape conforming to the contour of the face of the user, and the contour of the second frame is maintained in conformity with the contour of the first frame. The seal assembly includes a flexible seal member for contacting the skin of the user's face and a third frame for supporting and securing the flexible seal member. The third frame of the seal assembly is assembled with the first frame and/or the second frame of the filter assembly in the order of the first frame of the filter assembly, the second frame of the filter assembly, and the third frame of the seal assembly to form a receiving cavity. When worn, the mouth and nose of the user are contained within the receiving cavity, and the flexible seal contacts and seals against the skin in the corresponding area of the user's face.
Description
Technical Field
The invention relates to a respirator frame and a respirator.
Background
In the modern industry, a plurality of special industrial species need workers to work in severe environments such as dense smoke, a large amount of dust and the like, such as sites of fire protection, chemical industry, welding, polishing, mine and the like, and in order to protect the harm of the workers from the dust, the workers need to wear special self-priming filter respirators to filter and isolate the dust. The most important performance requirements of self-priming filter respirators are: tightness, filtering effect, respiratory resistance, reliability, comfort and easy operability.
Disclosure of Invention
The invention aims to provide the self-priming filter respirator which has the advantages of better sealing suitability, better comfort, simple structure and simpler and more convenient and effective operation.
A first aspect of the invention provides a respirator frame that includes a filter assembly and a seal assembly. The filter assembly includes a first frame and a second frame removably coupled together, the first frame contoured to conform to the contour of a user's face, and the second frame contoured to conform to the contour of the first frame. The seal assembly includes a flexible seal for contacting the skin of the user's face and a third frame for supporting and securing the flexible seal, the third frame of the seal assembly and the first and/or second frames of the filter assembly being assembled together in the order of the first frame of the filter assembly, the second frame of the filter assembly, and the third frame of the seal assembly to form a receiving cavity. When worn, the mouth and nose of the user are contained within the receiving cavity, and the flexible seal contacts and seals against the skin of the corresponding area of the user's face.
Preferably, the first frame and the second frame are each injection molded from a semi-rigid plastic.
Preferably, the first frame includes a first outer contour periphery and a first supporting portion surrounded by the first outer contour periphery, wherein the first outer contour periphery forms an outer contour of the first frame that is adapted to the contour of the user's face, and the first supporting portion is a partially hollowed-out structure in a shape of an arc-shaped curved surface protruding toward a direction away from the user's face in a use state. The second frame comprises a second outer contour peripheral edge and a second supporting part surrounded by the second outer contour peripheral edge, the second outer contour peripheral edge forms an outer contour of the second frame which is matched with the contour of the face of the user, and the second supporting part is of a partially hollowed-out structure and is in an arc-shaped curved surface protruding towards the direction away from the face of the user in a use state.
Preferably, the first support portion of the first frame and the second support portion of the second frame are formed in a mesh structure by bone beams, respectively.
Preferably, the porosity of the mesh structure of the first support portion of the first frame ranges from 80% to 95%.
Preferably, the mesh structure bone beam of the first support portion of the first frame is formed to be axisymmetric with respect to a central axis of the first frame.
Preferably, the mesh structure bone beam of the second support portion of the second frame is formed to be axisymmetric with respect to the central axis of the second frame.
Preferably, the positions and the sizes of the bone beams and the meshes in the mesh structure of the second supporting part are completely matched with those of the bone beams and the meshes in the mesh structure of the first supporting part.
Preferably, the positions and sizes of the mesh holes in the bone beam and the mesh structure of the second support part are partially matched with those of the first support part, and the porosity of the mesh structure of the second support part is greater than that of the first support part.
Preferably, when the first and second frames are assembled together, the assembly gap between the first and second support portions is less than the thickness of the filter element to be used in combination, and the filter element is placed between the first and second frames in the respirator frame in use, forming a sandwich structure.
Preferably, an exhalation valve flap mounting portion with a circular opening is further provided at a symmetry center of the lower portion of the second support portion, and the exhalation valve flap is mounted on a mounting plane of the exhalation valve flap mounting portion in a use state of the respirator frame.
Preferably, an exhalation valve limiting part with a circular opening is further arranged at the symmetrical center of the lower part of the first supporting part, and the position and the size of the exhalation valve limiting part correspond to those of the exhalation valve clack mounting part of the second supporting part.
Preferably, the lower parts of the first frame and the second frame are connected together through a connecting part, so that the first frame and the second frame can mutually adjust the distance and the opening and closing angles between the first frame and the second frame by taking the connecting part as a supporting point.
Preferably, the first frame and the second frame are openable with respect to each other in an angle range of 15 ° to 180 °.
Preferably, the first outer peripheral edge of the first frame and the second outer peripheral edge of the second frame are detachably assembled together by a connecting structure.
Preferably, the flexible seal and the third frame are permanently glued together by an adhesive to form the seal assembly.
Preferably, the flexible seal comprises a first sealing layer, a second sealing layer and a filler wrapped between the first sealing layer and the second sealing layer.
Preferably, the first sealing layer and the second sealing layer are made of thermoplastic polymer films, and the first sealing layer and the second sealing layer are made of the same or different film materials.
Preferably, the first sealing layer and the second sealing layer are bonded together by hot pressing, ultrasonic welding, or high frequency welding to form an edge sealing portion, and the filler is completely wrapped between the first sealing layer and the second sealing layer
Preferably, the width of the edge sealing part is 0.1 to 5mm.
Preferably, the first sealing layer is formed by compounding a fabric layer and a TPU film, and the fabric layer is in direct contact with the skin of the face of the user when the user wears the first sealing layer.
Preferably, the filler is a buffer material, so that the filler is elastically deformed to match the facial contour of the user when being stressed, thereby realizing the function of dynamic sealing.
Preferably, the filler is one composition selected from A/B double-component addition type silica gel, A/B double-component PU gel, high-strength hydrogel, A/B double-component foam silica gel and PU sponge.
Preferably, the filler is a double-layer composite structure, which is composed of a porous layer and a gel layer, wherein the porous layer is a base material, and is close to the third frame, the gel layer is a surface layer buffer material, and the gel layer is in contact with the facial skin of the user in a state that the first sealing layer is arranged between the porous layer and the gel layer in use.
Preferably, the third frame is provided with an upper strap connecting hole and a lower strap connecting hole, which are respectively connected with an upper strap and a lower strap for fixing the head strap of the respirator frame so as to fix and adjust the wearing force of the respirator frame.
Preferably, lower strap connection parts are symmetrically arranged at lower parts of two side edges of the first frame, the second frame or the third frame and are used for being connected with two lower straps of the head strap, brackets are symmetrically arranged above the lower strap connection parts and extend backwards and outwards from two side edges of the first frame, the second frame or the third frame respectively, and upper strap connection parts are symmetrically arranged at tail ends of the brackets and are used for being connected with upper straps corresponding to the head strap.
Preferably, the width of the stent itself is gradually narrowed and then gradually widened in a direction from the edge of the first frame, the second frame or the third frame toward the respective ends of the stent.
Preferably, the height of the end of the bracket is no greater than the height of the top end of the third frame, such that when the respirator frame of the present invention is worn, the end of the bracket is in front of the user's ear and below the temple.
A second aspect of the invention provides a respirator that comprises: the respirator frame described above, and a filter cartridge disposed between the first and second frames of the respirator frame to form a sandwich structure.
Preferably, the respirator further comprises an exhalation valve flap that is mounted to the second frame on the mounting plane of the exhalation valve flap mounting portion.
The respirator frame and respirator construction according to the present invention described above can provide the following benefits: the modularized structure ensures that the installation and the disassembly are convenient, and the replacement of the filter element is convenient; the filter assembly can be removed only to replace the filter element without removing the respirator, avoiding cumbersome operations of repeatedly removing, wearing the respirator and/or the respirator frame.
According to the structure of the respirator frame and the respirator, the first frame and the second frame in the respirator frame can be integrated, so that the assembly of the respirator frame is convenient. In addition, the first frame and the second frame of the respirator frame can be opened or closed, and the filter element can be conveniently positioned, installed and replaced.
The respirator frame and seal assembly in a respirator of the present invention described above is due to the low density, low durometer, low modulus of elasticity, high resilience cushioning material therein. When the flexible seal is in contact with the facial skin of the user, the compressive stress of the facial skin on the flexible seal acts directly on the filling. Due to the low hardness and high rebound characteristics of the flexible sealing element, the filler is stressed to elastically deform to match the facial contour of a user, so that the dynamic sealing function is realized.
According to the preferred respirator frame and respirator seal assembly, the filler is a two-layer composite structure consisting of two layers of porous layer and gel layer, wherein the porous layer is the substrate and the gel layer is the skin cushioning material. In use, the first sealing layer is in contact with the skin of the face of a user with the first sealing layer therebetween, the compressive stress of the contours of the face skin acting directly on the gel layer. By such a structure, the following technical effects can be achieved: (1) The average density of the filler is reduced, the weight is reduced, and the cost is reduced; (2) The porous layer material provides an additional buffer effect, and can promote the overall compression rebound characteristic, and improve the sealing and comfort; (3) The gel of the top layer is more comfortable against the skin than the purely porous material.
According to a preferred respirator frame and respirator seal assembly, the first seal layer is formed by combining a fabric layer and a TPU film, and is worn in direct contact with the skin of the user's face. By utilizing the characteristics of skin-friendly, breathable and oil-absorbing properties of the fabric layer, the comfort level of the fabric layer in contact with skin is good, and particularly, the comfort level of the respirator worn for a long time can be obviously improved.
Drawings
Fig. 1a is a view showing the respirator frame of the present invention in an assembled state.
FIG. 1b is a view showing the respirator frame of the present invention in a disassembled state.
FIG. 1c is yet another view showing the respirator frame of the present invention in a disassembled state.
Fig. 1d is a perspective view showing the connection of the respirator frame of the present invention in an assembled state.
FIG. 2a is a cross-sectional view showing a flexible seal used in the respirator frame of the present invention.
FIG. 2b is a cross-sectional view illustrating one embodiment of a flexible seal for use in the respirator frame of the present invention.
Fig. 3a is a plan view showing a modification of the respirator frame of the present invention.
Fig. 3b is a front view showing a modification of the respirator frame of the present invention.
Fig. 3c is a perspective view showing a modification of the respirator frame of the present invention.
Detailed Description
As shown in fig. 1a and 1b, the respirator frame 1 disclosed in the present invention includes a filter assembly 10, a seal assembly 20. In use, the filter element needs to be installed to form a respirator, and may be fitted with a head strap or the like for donning.
The filter assembly 10 includes a first frame 101, a second frame 102. In use, the cartridge is placed between the first frame 101 and the second frame 102, forming a sandwich. The first frame 101 and the second frame 102 may each be injection molded from a semi-rigid plastic. Alternative plastic materials include, but are not limited to, PC, nylon, PP, etc., preferably nylon, while providing sufficient flexibility and reliability while meeting the rigidity of the material. The contour of the first frame 101 may be a shape that conforms to the contour of the user's face, including, but not limited to, an approximately triangle.
The first frame 101 includes a first outer peripheral edge 1010 and a first support 1011. The first outer contoured periphery 1010 forms an outer contour of the first frame 101 that conforms to the contours of a user's face. The first supporting portion 1011 is a partially hollowed structure, and has an arc-shaped curved surface protruding toward a direction away from the second frame 102. An exhalation valve stopper 1012 having a circular opening is also provided at the center of symmetry of the lower portion of the first support portion 1011 (see fig. 2). The first supporting portion 1011 includes a plurality of narrow bone beams formed in a mesh structure symmetrical with respect to the axis of the first frame 101. The porosity of the mesh of the first support portion 101 (i.e., the ratio between the area of the mesh region and the surface area of the curved surface of the entire first support portion 101) ranges from: 80% -95%.
The profile of the second frame 102 is consistent with the profile of the first frame 101 and also includes a second outer profile peripheral edge 1020 and a second support 1021 in a central region. Similar to the first contoured perimeter 1010, the second contoured perimeter 1020 forms an exterior contour of the second frame 102 that conforms to the contours of the user's face. The second supporting portion 1021 is a partially hollowed structure, and has an arc-shaped curved surface protruding toward the first frame 101, and the shape is completely consistent with the shape of the first supporting portion 1011. The second support 1021 includes a number of narrow bone beams formed in an axially symmetrical mesh structure with respect to the second frame 102. When the first frame 101 and the second frame 102 are assembled together, the assembly gap between the first support 1011 and the second support 1021 is smaller than the thickness of the cartridge, and the cartridge shape used in cooperation is generally a shape conforming to the first frame 101 and the second frame 102. In one embodiment, the position and size of the bone beam and mesh of the second support 1021 is exactly matched to the position and size of the bone beam and mesh of the first support 1011, which mesh forms the air intake channel. In another embodiment, the position and size of the bone beam and mesh of the second support 1021 is partially matched to the position and size of the bone beam and mesh of the first support 1011, i.e., the porosity of the mesh of the second support 1021 is greater than the porosity of the mesh of the first support 1011. An exhalation valve flap mounting portion 1022 provided with a circular opening is provided at the lower center of symmetry of the second support portion. The exhalation valve flap may be mounted on the mounting plane of the exhalation valve flap mounting portion 1022 in a use state, the position and size of the exhalation valve flap mounting portion 1022 corresponding to the exhalation valve limiting portion 1012 on the first support portion 1011 to mount and limit the exhalation valve flap between the exhalation valve flap mounting portion 1022 and the exhalation valve limiting portion 1012.
The lower parts of the first frame 101 and the second frame 102 are connected together by a connecting part 103, and the first frame 101 and the second frame 102 can mutually adjust the distance and the opening and closing angles between the two by taking the connecting part 103 as a supporting point. Preferably, the openable angular range: 15-180 deg.
In one embodiment, the first frame 101, the second frame 102 and the connecting portion 103 are integrally injection molded, and the material may be PP, so that the connecting portion 103 can withstand long-term repeated opening and closing operations. In another embodiment, the first frame 101 and the second frame 102 are injection molded separately, and the connection portion 103 is provided as a rotatable structure such as a hinge door hinge.
The first outer peripheral rim 1010 of the first frame 101 and the second outer peripheral rim 1020 of the second frame 102 may be detachably assembled together by a connection structure such as a snap-fit structure. With such a structure, the first frame 101 and the second frame 102 can be opened or closed to facilitate positioning, installation, and/or replacement of the cartridge while the first frame 101 and the second frame 102 are integrated and assembled conveniently.
As shown in fig. 1b, the seal assembly 20 is a hollow structure including a flexible seal 104 for contacting the skin of the user's face and a third frame 105 for supporting and securing the flexible seal 104. The flexible seal 104 and the third frame 105 may be permanently glued together by an adhesive or the like to form the seal assembly 20. The third frame 105 is a hollow rigid plastic part. The third frame 105 of the seal assembly 20 is assembled with either the first frame 101 or the second frame 102 of the filter assembly 10 to form a receiving cavity within which the mouth and nose of the user is received during wear and the flexible seal 104 contacts and seals against the skin in the corresponding area of the user's face.
The flexible seal 104 is made of an elastomer-like material, such as an elastomeric material such as silicone rubber, TPE, or the like, by injection molding. In the present invention, as shown in fig. 2a, the flexible seal 104 includes a first sealing layer 1040, a second sealing layer 1041, and a filler 1042 wrapped between the first sealing layer 1040 and the second sealing layer 1041.
The first sealing layer 1040 and the second sealing layer 1041 are made of thermoplastic polymer films with high strength, high toughness, high elongation and excellent tear resistance, such as TPU films (film thickness 0.03-0.2 mm, hardness (Shore A): 30-100, ultimate tensile strength 6000-12000 PSI, ultimate tensile ratio about 300% -800%). When the respirator frame 1 is worn, the first sealing layer 1040 will directly contact the skin, so the first sealing layer 1040 will pass the cytotoxicity test, most preferably, the Bio-C test.
The first sealing layer 1040 and the second sealing layer 1041 may be made of the same film material, or may be made of different materials. The first sealing layer 1040 and the second sealing layer 1041 are bonded together by hot pressing, ultrasonic welding, or high frequency welding to form an edge sealing portion, and the filler 1042 is completely wrapped between the first sealing layer 1040 and the second sealing layer 1041, and the width of the edge sealing portion is as follows: 0.1-5 mm.
In another preferred embodiment, the first sealing layer 1040 is formed by a combination of a fabric layer and a TPU film, and is worn by the fabric layer in direct contact with the skin of the user's face. The preferable compounding mode is thermal lamination; by utilizing the characteristics of skin-friendly, breathable and oil-absorbing properties of the fabric layer, the comfort level of the fabric layer in contact with skin is good, and particularly, the comfort level of the respirator worn for a long time can be obviously improved.
The filler 1042 is a buffer material with low density, low hardness, low elastic modulus and high rebound. When the flexible seal 104 is in contact with the facial skin of a user, the compressive stress of the facial skin on the flexible seal 104 acts directly on the filling 1042. Due to the low hardness, high rebound characteristics of the flexible seal 104, the filler 1042 is forced to elastically deform to match the facial contours of the user, achieving a dynamic seal function.
In one embodiment, the filler 1042 is an A/B two-component addition type silicone gel molded by heat curing. The hardness of the filler 1042 is expressed by cone penetration, and the cone penetration of the filler 1042 is 40-150 by adopting GB/T269-1991 test standard and 1/4 ratio cone test; other indexes: tensile strength: 0.2-1 MPa, compression recovery rate 100%, compression rebound rate: the preferred rebound rate is >20mm/s from 6mm/s to 40 mm/s. The main component of the silica gel A is polysiloxane liquid, such as methyl or vinyl polysiloxane or phenyl polysiloxane. The silica gel B component is hydrogen-containing polysiloxane and is added with Pt catalyst. After the component A and the component B are uniformly mixed according to a certain volume ratio, the materials of the two components undergo partial crosslinking reaction at a certain temperature to be solidified, and the gel-like (solid-liquid coexisting) low-hardness elastomer material is formed. The viscosity of the component A and the viscosity of the component B are about 700-350 mpa s, and the volume ratio of the component A to the component B is 0.5:1-1.5:1.
In another embodiment, the filler 1042 is A/B double-component PU gel, the GB/T269-1991 test standard is adopted, the 1/4 ratio cone test is adopted, and the cone penetration of the filler 1042 is 40-150; other indexes: tensile strength: 0.2-1 MPa, compression recovery rate 100%, compression rebound rate: the preferred rebound rate is >20mm/s from 6mm/s to 40 mm/s.
In yet another embodiment, the packing 1042 is a high strength hydrogel, and the penetration of the packing 1042 is 40-150 using GB/T269-1991 test standard and 1/4 ratio cone test; other indexes: tensile strength: 0.2-5 MPa, compression recovery rate 100%, compression rebound rate: 6mm/s to 40mm/s, preferred rebound rate>20mm/s; h in the hydrogel 2 The content of O is about 80-90%.
In yet another embodiment, the filler 1042 is an A/B two-component foam silicone, mixed in-mold foam molding.
In yet another embodiment, the filler 1042 is PU sponge, which is processed by a cavity foaming process.
In yet another embodiment, as shown in fig. 2b, the filler 1042 is a double-layer composite structure, which is composed of two layers of a porous layer 1042a and a gel layer 1042b, wherein the porous layer 1042a is a substrate, and is close to the third frame 105; the gel layer 1042b is a surface layer cushioning material, which is in contact with the facial skin of a user in use with the first sealing layer 1040 therebetween, and the compressive stress of the facial skin contours acts directly on the gel layer 1042 b. The porous layer 1042a is formed by foaming in advance through a mold cavity; the gel layer 1042b may be any of the above gel materials. The thickness of the gel layer 1042b is less than or equal to the thickness of the porous layer 1042a, the thickness ratio of the gel layer 1042b to the porous layer 1042a is 1:10-1:1, more preferably, the thickness ratio between the gel layer 1042b and the porous layer 1042a is 1:3-1:1. In another embodiment, the thickness of the gel layer 1042b is slightly larger than the thickness of the porous layer 1042a, and the thickness ratio of the gel layer 1042b to the porous layer 1042a is 1:1-3:1. By such a structure, the following technical effects can be achieved: (1) The average density of the filler is reduced, the weight is reduced, and the cost is reduced; (2) The porous layer material provides an additional buffer effect, and can promote the overall compression rebound characteristic, and improve the sealing and comfort; (3) The gel of the top layer is more comfortable against the skin than the purely porous material.
The third frame 105 may be provided with two upper strap attachment holes and two lower strap attachment holes, which are respectively connected with 2 upper straps and 2 lower straps that fix the head straps of the respirator frame, to fix and adjust the force with which the respirator frame is worn. It should be noted that the strap attachment holes on the third frame 105 are not limited to the above number, and may be any even number, as long as the auxiliary wearing function is achieved.
Assembly of respirator frame 1
The respirator frame 1 of the present invention is assembled by the following steps
(1) Opening the first frame 101 and the second frame 102 to a relatively certain angle;
(2) Optionally, fitting the exhalation valve flap to the exhalation valve mounting 1022 on the second frame 102;
(3) Inserting the cartridge between the first frame 101 and the second frame 102; optionally, the filter element is fixed at a designated position by a positioning hole additionally arranged on the edge of the filter element and a positioning column (not shown) additionally arranged on the second frame, and the filter element can be positioned between the first frame 101 and the second frame 102 in an auxiliary manner by other common means;
(4) Fastening the first and second frames 101 and 102 together, sandwiching and fixing the filter cartridge between the first and second frames 101 and 102 with an assembly gap between the first and second support portions 1011 and 1021 that is smaller than the thickness of the filter cartridge, thereby forming the filter assembly 10;
(5) Assembling the seal assembly 20 and the filter assembly 10 together by means of snap-fitting or the like;
(6) The head strap is connected to a corresponding plurality of strap attachment holes on the third frame 105.
Modification examples
The following describes a modification of the respirator frame 1 of the present invention.
As shown in fig. 3a to 3c, two lower strap connection portions 1053 are symmetrically provided at positions slightly below both side edges of the third frame 105 (below the direction of the user's eyes closer to the user's chin with respect to the wearing) for connection with the two lower straps of the head strap. Brackets 1051 (1051 a and 1051 b) are symmetrically provided above the two lower strap connections 1053, respectively, and the brackets 1051a and 1051b are sheet-like arcuate beams extending rearwardly (from the filter assembly toward the seal assembly) and outwardly (away from the wearer's head) from the respective side edges of the third frame 105. The configuration of the prongs 1051 is ergonomically designed, from the edge of the third frame 105 towards the respective ends of the prongs 1051a and 1051b, the width of the prongs 1051a and 1051b gradually narrows and then gradually widens, the distance between the narrowest of the prongs 1051a and the corresponding narrowest of the prongs 1051b being approximately equal to the average value of the width of the cheekbones of the human face, which is approximately 110-135 mm for adult asians; and brackets 1051a and 1051b extend obliquely upward from the edges of the third frame 105, respectively, in a direction gradually away from the filter assembly 10, and then gradually turn rearward at the narrowest point (from the filter assembly to the direction of the seal assembly or from the first frame to the normal direction of the second frame in the assembled state), and at the ends of the brackets 1501a and 1051b, respectively, an upper strap connecting portion 1052 is symmetrically provided for connecting with the upper strap corresponding to the head strap.
The height of the distal end of the bracket 1051 is not higher than the height of the top end 1054 of the third frame 105. When the respirator frame 1 or the respirator of the invention is worn, the tail end of the bracket 1051 is positioned in front of the ears of a user and below the temple height, so that structural interference with the protective glasses or the eyeshields worn by the user can be avoided, i.e. the wearing of the protective glasses or the eyeshields is not influenced. On the other hand, by the end of the bracket 1051 connected to the upper strap, the tension of the upper strap is transferred to the third frame 105 via the bracket 1051, thereby creating a force vector acting on the face of the person, and in particular the nose bridge 1054, and a force vector that forces the mask generally upward, so that the force acting on the third frame 105 from the lower strap is balanced while ensuring the sealing of the nose bridge, improving the stability and comfort of wear.
Alternatively, bracket 1051 may be provided on either first frame 101 or second frame 102 of filter assembly 10.
Claims (27)
1. A respirator frame includes a filter assembly and a seal assembly,
the filter assembly includes a first frame and a second frame removably coupled together, the first frame contoured to conform to the contour of a user's face, the second frame contoured to conform to the contour of the first frame,
the sealing assembly comprises a flexible sealing element which is contacted with the facial skin of a user and a third frame which supports and fixes the flexible sealing element, the flexible sealing element comprises a first sealing layer, a second sealing layer and a filler which is wrapped between the first sealing layer and the second sealing layer, and the filler is a buffer material, so that the filler is elastically deformed to match the facial contour of the user when being stressed, and the function of dynamic sealing is realized;
the filler is of a double-layer composite structure and consists of a porous layer and a gel layer, wherein the porous layer is a base material and is close to the third frame, the gel layer is a surface layer buffer material and is contacted with the facial skin of a user in a state that the first sealing layer is arranged between the porous layer and the gel layer when the filler is used, the compressive stress of the facial skin profile directly acts on the gel layer, and the porous layer is prepared by foaming through a die cavity in advance; the thickness of the gel layer is less than or equal to the thickness of the porous layer;
the first frame of the filter assembly, the second frame of the filter assembly, and the third frame of the seal assembly are assembled together in that order to form a receiving cavity,
when worn, the mouth and nose of the user are contained within the receiving cavity, and the flexible seal contacts and forms a seal with the skin of the corresponding region of the user's face.
2. The respirator frame of claim 1 wherein
The first frame and the second frame are both injection molded from semi-rigid plastic.
3. The respirator frame of claim 1 wherein
The first frame comprises a first outer contour periphery and a first support surrounded by the first outer contour periphery, wherein
The first outer contour periphery forms an outer contour of the first frame which is adapted to the contour of the face of the user, and the first supporting part is a partially hollowed-out structure which is in an arc-shaped curved surface protruding towards the direction away from the face of the user in the using state,
the second frame includes a second outer contour periphery and a second support surrounded by the second outer contour periphery,
the second outer contour periphery forms an outer contour of the second frame that conforms to the contour of the user's face,
the second supporting part is of a partially hollowed structure and is in an arc-shaped curved surface protruding towards the direction away from the face of the user in the use state.
4. The respirator frame of claim 3 wherein
The first support portion of the first frame and the second support portion of the second frame are formed in a mesh structure by bone beams, respectively.
5. The respirator frame of claim 4 wherein
The porosity of the mesh structure of the first support portion of the first frame ranges from 80% to 95%.
6. The respirator frame of claim 4 wherein
The mesh structure bone beam of the first support portion of the first frame is formed to be axisymmetric with respect to a central axis of the first frame.
7. The respirator frame of claim 4 wherein
The mesh structure bone beam of the second support portion of the second frame is formed to be axisymmetric with respect to a central axis of the second frame.
8. The respirator frame of claim 4 wherein
The positions and the sizes of the bone beams and the meshes in the mesh structure of the second supporting part are completely matched with those of the bone beams and the meshes in the mesh structure of the first supporting part.
9. The respirator frame of claim 4 wherein
The positions and the sizes of the bone beam and the mesh holes in the mesh structure of the second supporting part are partially matched with those of the bone beam and the mesh holes in the mesh structure of the first supporting part, and
the porosity of the mesh structure of the second support portion is greater than the porosity of the mesh structure of the first support portion.
10. The respirator frame of claim 3 wherein
When the first frame and the second frame are assembled together, an assembly gap between the first support portion and the second support portion is smaller than the thickness of the filter element to be matched for use, and the filter element is placed between the first frame and the second frame in a use state of the respirator frame to form a sandwich structure.
11. The respirator frame of claim 3 wherein
And the lower symmetrical center of the second supporting part is also provided with an exhalation valve clack mounting part with a circular opening, and the exhalation valve clack is mounted on the mounting plane of the exhalation valve clack mounting part in the use state of the respirator frame.
12. The respirator frame of claim 11 wherein
And the symmetrical center of the lower part of the first supporting part is also provided with an exhalation valve limiting part with a circular opening, and the position and the size of the exhalation valve limiting part correspond to those of the exhalation valve clack mounting part of the second supporting part.
13. The respirator frame of claim 1 wherein
The lower parts of the first frame and the second frame are connected together through a connecting part, so that the distance between the first frame and the second frame and the opening and closing angle can be mutually adjusted by taking the connecting part as a supporting point.
14. The respirator frame of claim 13 wherein
The first frame and the second frame can be opened at an angle ranging from 15 ° to 180 ° with respect to each other.
15. The respirator frame of claim 6 wherein
The first outer peripheral edge of the first frame and the second outer peripheral edge of the second frame are detachably assembled together by a connecting structure.
16. The respirator frame of claim 1 wherein
The flexible seal and the third frame are permanently glued together by an adhesive to form the seal assembly.
17. The respirator frame of claim 1 wherein
The first sealing layer and the second sealing layer are made of thermoplastic polymer films, and the first sealing layer and the second sealing layer are made of the same or different film materials.
18. The respirator frame of claim 1 wherein
The first sealing layer and the second sealing layer are bonded together by hot pressing, ultrasonic welding, or high frequency welding to form an edge sealing portion, and the filler is completely wrapped between the first sealing layer and the second sealing layer.
19. The respirator frame of claim 18 wherein
The width of the edge sealing part is 0.1-5 mm.
20. The respirator frame of claim 1 wherein
The first sealing layer is formed by compounding a fabric layer and a TPU film, and the fabric layer is in direct contact with the skin of the face of the user when the user wears the mask.
21. The respirator frame of claim 1 wherein
The filler is one composition selected from A/B double-component addition silica gel, A/B double-component PU gel, high-strength hydrogel, A/B double-component foam silica gel and PU sponge.
22. The respirator frame of claim 1 wherein
The third frame is provided with an upper binding band connecting hole and a lower binding band connecting hole, and the upper binding band connecting hole and the lower binding band connecting hole are respectively connected with an upper binding band and a lower binding band of the head binding band of the respirator frame to fix and adjust the wearing force of the respirator frame.
23. The respirator frame of claim 1 wherein
Lower strap connecting portions are symmetrically arranged at lower portions of two side edges of the first frame, the second frame or the third frame for connecting with two lower straps of the head strap,
brackets are symmetrically arranged above the lower strap connecting portions and extend backwards and outwards from the edges of the two sides of the first frame, the second frame or the third frame respectively, and upper strap connecting portions are symmetrically arranged at the tail ends of the brackets respectively and are used for being connected with upper straps corresponding to the head straps.
24. The respirator frame of claim 23 wherein
The width of the stent itself is gradually narrowed and then gradually widened in a direction from the edge of the first frame, the second frame, or the third frame toward the respective ends of the stent.
25. The respirator frame of claim 23 wherein
The height of the bracket end is no higher than the height of the top end of the third frame such that when the respirator frame is worn, the bracket end is in front of the user's ear and below the temple.
26. A respirator that comprises
The respirator frame of any one of claims 1 to 25, and a filter cartridge interposed between the first and second frames of the respirator frame to form a sandwich structure.
27. The respirator of claim 26, further comprising an exhalation valve flap that is mounted to the second frame on a mounting plane of the exhalation valve flap mounting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710805913.4A CN109464760B (en) | 2017-09-08 | 2017-09-08 | Respirator frame and respirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710805913.4A CN109464760B (en) | 2017-09-08 | 2017-09-08 | Respirator frame and respirator |
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| Publication Number | Publication Date |
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| CN109464760A CN109464760A (en) | 2019-03-15 |
| CN109464760B true CN109464760B (en) | 2023-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710805913.4A Active CN109464760B (en) | 2017-09-08 | 2017-09-08 | Respirator frame and respirator |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021202306A1 (en) * | 2020-03-28 | 2021-10-07 | Proveris Scientific Corporation | Respiration apparatus and methods of use thereof |
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| DE102007057091A1 (en) * | 2006-12-06 | 2008-06-12 | Weinmann Geräte für Medizin GmbH + Co. KG | Medical respiration mask has flexible cavity wall of varying thickness with filling material |
| CN203408324U (en) * | 2013-06-26 | 2014-01-29 | 思眠安公司 | Breathing mask |
| CN203828133U (en) * | 2014-03-11 | 2014-09-17 | 温州市睿德贸易有限公司 | Protective mask |
| CN105056361A (en) * | 2008-03-04 | 2015-11-18 | 瑞思迈有限公司 | Mask system |
| CN206273150U (en) * | 2016-10-20 | 2017-06-23 | 万明华 | A kind of respiratory protection mouth mask |
| CN207627759U (en) * | 2017-09-08 | 2018-07-20 | 深圳瑞之谷医疗科技有限公司 | Respirator frame and respirator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2147769B1 (en) * | 2008-07-22 | 2013-02-13 | MAP Medizin-Technologie GmbH | Cushion, method of and apparatus for molding a cushion for a respiratory mask |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007057091A1 (en) * | 2006-12-06 | 2008-06-12 | Weinmann Geräte für Medizin GmbH + Co. KG | Medical respiration mask has flexible cavity wall of varying thickness with filling material |
| CN105056361A (en) * | 2008-03-04 | 2015-11-18 | 瑞思迈有限公司 | Mask system |
| CN203408324U (en) * | 2013-06-26 | 2014-01-29 | 思眠安公司 | Breathing mask |
| CN203828133U (en) * | 2014-03-11 | 2014-09-17 | 温州市睿德贸易有限公司 | Protective mask |
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| CN109464760A (en) | 2019-03-15 |
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