An integrated protective face mask

Abstract

The utility model relates to an integrated protective mask belongs to the technical field of protective equipment, the integrated protective mask, including half mask and filter box, one end of half mask swing installation has filter box, half mask includes rigid casing, flexible sealing body, check valve core, check valve piece and exhale cover, one end of rigid casing is provided with flexible sealing body through integrated injection molding mode, the other end of rigid casing is provided with the clamping ring, the surface of clamping ring is evenly provided with a plurality of clamping square blocks, the inside of rigid casing is provided with check valve piece through the supporting rib in the inside of clamping ring, the below of rigid casing of clamping ring one side is provided with the exhale hole, and the exhale hole is provided with check valve core through exhale cover, the integrated protective mask, compact structure, clever design have solved the problem that the existing protective mask has the problem of easy deformation, low assembly efficiency, and are especially suitable for the requirement of breathing protection use.

Description

Technical Field

[0001] This utility model relates to an integrated protective face shield, belonging to the field of protective equipment technology. Background Technology

[0002] Protective face shields are commonly used protective equipment in production work. Existing protective face shields, such as the integrated rotating and fastening interface disclosed in the utility model patent (previously filed) with authorization announcement number CN220530529 U, while meeting usage requirements to a certain extent, have the following problems: First: The protective mask requires multiple structures between the half-mask and the filter cartridge to achieve the rotational installation of the filter cartridge (see paragraph 0026 of the comparative document). This not only presents the problem of complex structure, but also the problem of high production cost.

[0003] Second: The existing protective face shield half-face shields are made of flexible material injection molding, which can meet the needs of use to a certain extent; however, when the half-face shield is made entirely of flexible material, it is easy to deform when worn, which can lead to poor facial breathing.

[0004] Third: Existing protective masks have filter cotton installed inside the filter cartridge; to ensure a tight seal, a sealing ring is installed inside the filter cartridge; the sealing ring needs to be installed manually, which results in low assembly efficiency.

[0005] Therefore, it is necessary to develop a new type of protective face shield to solve the above-mentioned problems of existing protective face shields. Summary of the Invention

[0006] The purpose of this utility model is to provide an integrated protective face shield with a compact structure and ingenious design, which solves the problems of easy deformation and low assembly efficiency of existing protective face shields.

[0007] The technical solution of this utility model is: An integrated protective face shield includes a half-face shield and a filter box; the filter box is movably installed at one end of the half-face shield; characterized in that: the half-face shield includes a rigid shell, a flexible sealing body, a one-way valve core, a one-way valve plate, and an exhalation cover; the flexible sealing body is integrally injection molded at one end of the rigid shell; a snap-fit ​​ring is provided at the other end of the rigid shell; multiple snap-fit ​​blocks are evenly distributed on the outer surface of the snap-fit ​​ring; a one-way valve plate is installed inside the rigid shell on the inner side of the snap-fit ​​ring through a support rib; an exhalation hole is provided below the rigid shell on one side of the snap-fit ​​ring; a one-way valve core is installed in the exhalation hole through an exhalation cover.

[0008] The rigid shell has an annular insertion ridge at one end; the flexible sealing body has an annular insertion groove at one end; the annular insertion ridge and the annular insertion groove are inserted into each other.

[0009] The top of the snap-fit ​​block is provided with an arc-shaped protrusion.

[0010] The filter box is provided with an output ring; multiple snap-fit ​​slots are evenly arranged inside the output ring; the filter box is connected to the snap-fit ​​ring on the half-mask through the output ring and the snap-fit ​​slots.

[0011] The locking slot includes a clearance slot, a receiving slot, and an arc-shaped locking slot; the inner wall of the output ring is provided with a clearance slot; a receiving slot is provided on one side of the clearance slot; an arc-shaped locking slot is provided at the top of the receiving slot; the arc-shaped locking slot and the arc-shaped protrusion are intermittently locked together. The filter box includes a front shell, a rear shell, and a filter element; the front shell is located at the front end of the rear shell; one end of the front shell is hinged to the rear shell; the other end of the front shell is fastened to the rear shell; the filter element is installed inside the front and rear shells; a clamping ring is provided on the upper part of the front shell; a sealing ring is provided on the inner side of the rear shell; the sealing ring is integrally formed with the rear shell by injection molding; the filter element is press-fitted between the clamping ring and the sealing ring.

[0012] The front and rear housings are generally curved; the front housing has multiple ventilation windows evenly distributed on it; the front housing has a pressing ring ridge inside the outer ring of the ventilation windows; one end of the front housing has a hinge pin; and the other end of the front housing has a fastening hole.

[0013] The rear housing has a hinge seat at one end; an elastic latch at the other end; an output ring at the middle; a support rib inside the rear housing surrounding the output ring; a sealing ring groove inside the rear housing; and a sealing ring layer formed by integral injection molding inside the sealing ring groove.

[0014] The advantages of this utility model are: This integrated protective face shield has a compact structure and ingenious design. It adopts a structural design in which a flexible sealing body is set at one end of the rigid shell through one-piece injection molding, and a snap-fit ​​block is set on the rigid shell. This design solves the problems of easy deformation and low assembly efficiency of existing protective face shields, and is particularly suitable for the requirements of respiratory protection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the isometric structure of this utility model; Figure 3 This is a schematic diagram of the structure of this utility model; Figure 4 This is a schematic diagram of the half-face mask structure of this utility model; Figure 5 This is a schematic diagram of the half-face mask structure of this utility model; Figure 6 for Figure 5 Enlarged structural diagram at point A; Figure 7 This is a schematic diagram of the structure of the flexible sealing body of this utility model; Figure 8 This is a schematic diagram of the structure of the flexible sealing body of this utility model; Figure 9 This is a schematic diagram of the rigid shell structure of this utility model; Figure 10 This is a schematic diagram of the rigid shell structure of this utility model; Figure 11 This is a schematic diagram of the rigid shell structure of this utility model; Figure 12 for Figure 11 Schematic diagram of the structure in the middle BB direction; Figure 13 for Figure 12 Enlarged structural diagram at point C; Figure 14 for Figure 12 Enlarged structural diagram at point D; Figure 15 This is a schematic diagram of the one-way valve core of this utility model; Figure 16 This is a schematic diagram of the structure of the filter box of this utility model; Figure 17 This is a schematic diagram of the structure of the filter box of this utility model; Figure 18 This is a cross-sectional structural diagram of the filter box of this utility model; Figure 19 for Figure 18 Enlarged structural diagram at point E; Figure 20 for Figure 17 Enlarged structural diagram at point F; Figure 21 This is a schematic diagram of the front housing of this utility model; Figure 22 This is a schematic diagram of the structure of the rear shell of this utility model.

[0016] In the diagram: 1. Half-mask; 2. Filter box; 3. Rigid shell; 4. Flexible sealing body; 5. Snap-fit ​​ring; 6. Snap-fit ​​block; 7. Support rib; 8. One-way valve plate; 9. Exhale port; 10. Exhale cover; 11. One-way valve core; 12. Annular insertion ridge; 13. Annular insertion groove; 14. Arc-shaped protrusion; 15. Output ring; 16. Snap-fit ​​groove; 17. Clearance groove; 18. Receiving groove; 19. Arc-shaped snap-fit; 20. Front shell; 21. Rear shell; 22. Filter element; 23. Compression ring ridge; 24. Sealing ring layer; 25. Vent window; 26. Hinge pin; 27. Snap-fit ​​hole; 28. Hinge seat; 29. ​​Elastic snap tongue; 30. Support ridge; 31. Sealing ring groove. Detailed Implementation

[0017] This integrated protective face shield includes a half-face shield 1 and a filter cartridge 2 (see instruction manual attached). Figure 1 and 2 ).

[0018] The half-mask 1 includes a rigid housing 3, a flexible sealing body 4, a one-way valve core 11, a one-way valve plate 8, and an exhalation cover 10 (see the instruction manual appendix). Figure 4 and 5 ).

[0019] One end of the rigid housing 3 is provided with a flexible sealing body 4 by integral injection molding. The purpose of this arrangement is to enable the flexible sealing body 4 to be installed on the rigid housing 3 by injection molding, thereby avoiding the problem of low assembly efficiency caused by the separate production of the rigid housing 3 and the flexible sealing body 4 and then reassembly.

[0020] One end of the rigid housing 3 is provided with an annular insertion ridge 12; one end of the flexible sealing body 4 is provided with an annular insertion groove 13; the annular insertion ridge 12 and the annular insertion groove 13 are inserted and connected (see the appendix of the instruction manual). Figure 8 , 9 (and 10). The purpose of setting the annular insertion ridge 12 and the annular insertion groove 13 is to make the connection between the rigid housing 3 and the flexible sealing body 4 tighter.

[0021] The other end of the rigid housing 3 is provided with a snap ring 5; the outer surface of the snap ring 5 is evenly provided with a plurality of snap blocks 6 (see the instruction manual). Figure 5 The top of the snap-fit ​​block 6 has an arc-shaped protrusion 14 (see the instruction manual). Figure 6 ).

[0022] Inside the rigid housing 3 on the inner side of the snap ring 5, a one-way valve plate 8 is installed via a support rib 7; an exhalation hole 9 is provided below the rigid housing 3 on one side of the snap ring 5; a one-way valve core 11 is installed inside the exhalation hole 9 via an exhalation cover 10. Both the one-way valve plate 8 and the one-way valve core 11 are common structures in the field of face mask protection. During operation, the filtered airflow can enter the interior of the half-mask 1 through the one-way valve plate 8; the exhaled airflow can be discharged through the one-way valve core 11.

[0023] A filter box 2 is movably installed at one end of the half-mask 1 (see instruction manual). Figure 1 , 2 (and 3). The filter box 2 includes a front housing 20, a rear housing 21, and a filter element 22 (see the attached instruction manual). Figure 16 , 17 and 18).

[0024] The front housing 20 and the rear housing 21 are generally curved (see the instruction manual). Figure 17 and 18 The purpose of arranging the front housing 20 and the rear housing 21 in this way is to enhance the filtration effect of the filter box 2 by utilizing the characteristic that the curved filtration area is larger than the planar filtration area.

[0025] The front housing 20 has multiple ventilation windows 25 evenly distributed on it; the front housing 20 has a pressing ring ridge 23 inside the outer ring of the ventilation windows 25; one end of the front housing 20 has a hinge pin 26; the other end of the front housing 20 has a fastening hole 27 (see the instruction manual appendix). Figure 21 ).

[0026] The front housing 20 is provided at the front end of the rear housing 21 (see the attached instruction manual). Figure 16 and 17 A hinge seat 28 is provided at one end of the rear housing 21; a resilient latch 29 is provided at the other end of the rear housing 21 (see the attached instruction manual). Figure 22 ).

[0027] One end of the front housing 20 and the rear housing 21 are hinged together by a hinge pin 26 and a hinge seat 28; the other end of the front housing 20 and the rear housing 21 are fastened together by a fastening hole 27 and an elastic fastening tongue 29.

[0028] The front housing 20 has a clamping ring ridge 23 on its upper surface; the rear housing 21 has a sealing ring groove 31 inside; a sealing ring layer 24 is integrally injection molded inside the sealing ring groove 31 (see the attached instruction manual). Figure 19 ).

[0029] The sealing ring 24 is integrally formed with the rear housing 21 by injection molding; a filter element 22 is press-fitted between the compression ring 23 and the sealing ring 24 (see the instruction manual). Figure 18 ).

[0030] With the cooperation of the pressing ring 23, the sealing ring 24 can seal the periphery of the filter element 22, so that during operation, the airflow can only enter the interior of the half-mask 1 after being filtered by the filter element 22.

[0031] The purpose of setting the sealing ring 24 inside the rear housing 21 by injection molding is to solve the problem of low assembly efficiency caused by producing the sealing ring 24 separately and then installing it, by taking advantage of the quick and convenient characteristics of injection molding.

[0032] The filter box 2 is equipped with an output ring 15 (see the instruction manual). Figure 17 and 22 The rear housing 21 of the outer ring of the output ring 15 has a support rib 30 inside (see the instruction manual appendix). Figure 22 The purpose of setting the support rib 30 is to ensure that, during operation, the filter element 22 can maintain a certain gap with the bottom surface of the rear housing 21 under the support of the support rib 30, so as to avoid the filter element 22 from sticking to the bottom surface of the rear housing 21 and the rear housing 21 from obstructing airflow and affecting the filtration effect of the filter box 2.

[0033] The output ring 15 has multiple snap-fit ​​slots 16 evenly arranged inside (see instruction manual). Figure 20 ).

[0034] The snap-fit ​​slot 16 includes a clearance slot 17, a receiving slot 18, and an arc-shaped snap 19; the inner wall of the output ring 15 is provided with the clearance slot 17; a receiving slot 18 is provided on one side of the clearance slot 17; an arc-shaped snap 19 is provided at the top of the receiving slot 18 (see the appendix of the specification). Figure 20 ).

[0035] The filter box 2 is connected to the snap-fit ​​block 6 of the snap-fit ​​ring 5 on the half-mask 1 via the output ring 15 and the snap-fit ​​slot 16.

[0036] When assembling the filter box 2 and the half-face mask 1, first align the clearance slot 17 on the filter box 2 with the snap-fit ​​block 6 on the half-face mask 1; then press the half-face mask 1 to make the snap-fit ​​block 6 snap into the clearance slot 17, and then rotate the half-face mask 1 to make the snap-fit ​​block 6 snap into the receiving slot 18. At this time, under the elastic force of the snap-fit ​​ring 5 and the output ring 15, the arc-shaped protrusion 14 snaps into the arc-shaped latch 19, thus completing the assembly of the filter box 2 and the half-face mask 1. When it is necessary to disassemble the filter box 2 and the half-face mask 1, rotate the half-face mask 1 in the opposite direction to disengage the arc-shaped protrusion 14 from the arc-shaped latch 19, and then separate the filter box 2 and the half-face mask 1. In this way, the filter box 2 and the half-face mask 1 can be assembled by forward rotation and disassembled by reverse rotation mainly through the snap-fit ​​block 6 and the snap-fit ​​slot 16. This solves the problem that existing protective masks require multiple structures to achieve the rotational installation of the filter cartridge.

[0037] When in operation, the flexible sealing body 4 fits snugly against the face in this integrated protective mask. The rigid shell 3 provides support for the flexible sealing body 4, preventing it from easily deforming and causing leakage. When breathing, the airflow enters the interior of the filter box 2 through the ventilation window 25 and is filtered by the filter element 22. Then, the airflow enters the interior of the half-mask 1 through the one-way valve plate 8. The exhaled airflow can be discharged through the one-way valve core 11.

[0038] This integrated protective face shield has a compact structure and ingenious design. It adopts a structural design in which a flexible sealing body 4 is set at one end of the rigid shell 3 by integral injection molding, and a snap-fit ​​block 6 is set on the rigid shell 3. This design solves the problems of easy deformation and low assembly efficiency of existing protective face shields, and is particularly suitable for the requirements of respiratory protection.

Claims

1. An integrated protective face shield, comprising a half-face shield (1) and a filter box (2); wherein the filter box (2) is movably mounted on one end of the half-face shield (1); characterized in that: The half-mask (1) includes a rigid shell (3), a flexible sealing body (4), a one-way valve core (11), a one-way valve plate (8), and an exhalation cover (10); one end of the rigid shell (3) is provided with a flexible sealing body (4) by integral injection molding; the other end of the rigid shell (3) is provided with a snap ring (5); multiple snap blocks (6) are evenly provided on the outer surface of the snap ring (5); the one-way valve plate (8) is installed inside the rigid shell (3) on the inner side of the snap ring (5) through a support rib (7); an exhalation hole (9) is provided below the rigid shell (3) on one side of the snap ring (5); the one-way valve core (11) is installed inside the exhalation hole (9) through the exhalation cover (10).

2. The integrated protective face shield according to claim 1, characterized in that: The rigid shell (3) is provided with an annular insertion ridge (12) at one end; the flexible sealing body (4) is provided with an annular insertion groove (13) at one end; the annular insertion ridge (12) and the annular insertion groove (13) are inserted and connected.

3. The integrated protective face shield according to claim 1, characterized in that: The top of the snap-fit ​​block (6) is provided with an arc-shaped protrusion (14).

4. The integrated protective face shield according to claim 3, characterized in that: The filter box (2) is provided with an output ring (15); multiple snap-fit ​​slots (16) are evenly arranged inside the output ring (15); the filter box (2) is connected to the snap-fit ​​ring (5) on the half-mask (1) through the output ring (15) and the snap-fit ​​slots (16).

5. The integrated protective face shield according to claim 4, characterized in that: The snap-fit ​​slot (16) includes a clearance slot (17), a receiving slot (18), and an arc-shaped snap-fit ​​(19); the inner wall of the output ring (15) is provided with a clearance slot (17); a receiving slot (18) is provided on one side of the clearance slot (17); an arc-shaped snap-fit ​​(19) is provided at the top of the receiving slot (18); the arc-shaped snap-fit ​​(19) is intermittently snap-fit ​​connected to the arc-shaped protrusion (14).

6. The integrated protective face shield according to claim 1, characterized in that: The filter box (2) includes a front shell (20), a rear shell (21), and a filter element (22); the front shell (20) is provided at the front end of the rear shell (21); one end of the front shell (20) is hinged to the rear shell (21); the other end of the front shell (20) is fastened to the rear shell (21); the filter element (22) is installed inside the front shell (20) and the rear shell (21); a pressing ring ridge (23) is provided on the upper part of the front shell (20); a sealing ring layer (24) is provided on the inner side of the rear shell (21); the sealing ring layer (24) is integrally formed with the rear shell (21) by integral injection molding; the filter element (22) is press-fitted between the pressing ring ridge (23) and the sealing ring layer (24).

7. The integrated protective face shield according to claim 6, characterized in that: The front housing (20) and the rear housing (21) are curved in shape as a whole; the front housing (20) is evenly distributed with multiple ventilation windows (25); the front housing (20) is provided with a pressing ring ridge (23) inside the outer ring of the ventilation window (25); a hinge pin (26) is provided at one end of the front housing (20); and a fastening hole (27) is provided at the other end of the front housing (20).

8. The integrated protective face shield according to claim 6, characterized in that: The rear housing (21) is provided with a hinge seat (28) at one end; the rear housing (21) is provided with an elastic latch (29) at the other end; the rear housing (21) is provided with an output ring (15) in the middle; the rear housing (21) is provided with a support rib (30) inside the outer ring of the output ring (15); the rear housing (21) is provided with a sealing ring groove (31) inside; a sealing ring layer (24) is provided in the sealing ring groove (31) by integral injection molding.

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