Outer cover of double-box mask

Abstract

The utility model discloses an outer cover of a double-box mask, which belongs to the technical field of anti-poison and anti-radiation masks and comprises an upper clamping groove, a lower clamping groove, two pairs of telescopic band penetrating ports and an expiration port, and the upper clamping groove and the lower clamping groove are sequentially arranged from top to bottom along the central axis of the outer cover of the double-box mask. When the double-box mask outer cover is connected with the inner cover, the upper clamping groove and the lower clamping groove are connected with the upper end and the lower end of the inner cover in a clamped mode respectively, the expiration opening is formed in the right front area of the double-box mask outer cover and matched with the expiration position of a person, hot air can be directly expired from the mask, water drops are prevented from being condensed, and the two pairs of telescopic belt penetrating openings are formed in the two sides of the double-box mask outer cover respectively. Each pair of telescopic belt penetrating openings are formed in the upper end and the lower end of the outer cover of the double-box mask respectively, a telescopic belt penetrating groove for connecting the two telescopic belt penetrating openings is formed in the middle of each pair of telescopic belt penetrating openings, and a limiting plate is arranged above the middle section of each telescopic belt penetrating groove to prevent the telescopic belts from sliding and pulling to be clamped between the outer cover and the mask or hoop the head to cause discomfort.

Description

Technical Field

[0001] This utility model belongs to the technical field of anti-toxic and anti-radiation masks, and more specifically, it relates to a double-box mask outer cover. Background Technology

[0002] With the increasing demands for safety and health in modern society, the development of personal protective equipment (PPE) has received increasing attention. In specific hazardous environments, such as nuclear accidents and chemical leaks, protective masks have become key equipment for ensuring personnel safety. However, traditional protective masks combine a receiver and a silicone adhesive cover, using the receiver to filter harmful gases. This not only increases the number of accessories, but also limits the number of receivers that can be matched with different specifications of silicone adhesive covers. During installation and use, the specifications of the accessories must be considered, increasing the complexity of use. At the same time, the more accessories there are, the higher the manufacturing cost and the corresponding maintenance cost. The old double-box mask cover has disadvantages such as the elastic strap easily getting stuck between the cover and the mask during wear, and the mask's air outlet being at the bottom. Exhaled air will condense into water droplets after contacting the cover and flowing out from the bottom of the air outlet, which can cause adverse effects in certain working environments. Therefore, a double-box mask cover with a reinforced elastic strap that connects to the double-box mask cover and prevents water droplets from condensing and falling is needed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a double-box face mask cover that can meet the requirements of reinforcing the connection of the elastic band and preventing water droplets from condensing and falling.

[0004] This utility model discloses a double-box face mask outer cover, comprising an upper locking slot, a lower locking slot, two pairs of telescopic strap openings, a locking buckle, an exhalation port, and a mask body. The upper locking slot, lower locking slot, and locking buckle are arranged sequentially from top to bottom along the central axis of the mask body. When the double-box face mask outer cover is connected to the inner cover, the upper and lower locking slots respectively engage and connect with the upper and lower ends of the inner cover. The locking buckle is fastened to the lower end of the inner cover and is detachably connected to the inner cover. The exhalation port is located in the front area of ​​the mask body, matching the person's exhalation point, allowing hot air to directly pass through... Exhaled air is exhaled from inside the cover to prevent water droplets from condensing. Two pairs of telescopic strap openings are located on both sides of the cover. Each pair of telescopic strap openings is located at the top and bottom of the cover. There is a telescopic strap groove in the middle of each pair of telescopic strap openings that connects the two sides. A limiting plate is installed in the middle section of the telescopic strap groove. When installing the telescopic strap, both ends pass symmetrically through the two pairs of telescopic strap openings and the telescopic strap groove, and pass through the limiting plate above the middle section of the telescopic strap groove to prevent the telescopic strap from sliding and pulling, which could cause it to get stuck between the cover and the inner cover or constrict the head and cause discomfort.

[0005] As a further improvement of this utility model, a pair of steps are provided on both sides of the limiting plate to shorten the distance between the limiting plate and the bottom of the telescopic belt through the groove, increase the friction of the telescopic belt sliding in the telescopic belt through the groove, strengthen the connection between the telescopic belt and the cover, and increase stability.

[0006] As a further improvement of this utility model, the exhalation port is provided with a baffle ring in the direction of the inside of the mask, so as to match the air outlet of the inner mask and prevent the exhaled hot air from condensing in other places of the mask. The lower end of the baffle ring is higher than the upper end, so as to prevent water droplets trapped inside the mask from flowing down.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: a limiting plate passes through the middle section of the telescopic belt through the groove to prevent the telescopic belt from sliding and pulling, causing it to get stuck between the cover and the inner cover or constricting the head and causing discomfort; a pair of steps are provided on both sides of the limiting plate to shorten the distance between the limiting plate and the bottom of the telescopic belt through the groove, increase the friction of the telescopic belt sliding in the telescopic belt through the groove, strengthen the connection between the telescopic belt and the cover, and increase stability; a retaining ring is provided on the exhalation port in the direction of the inside of the cover to match the air outlet of the inner cover, preventing the exhaled hot air from condensing in other parts of the cover, and the lower end of the retaining ring is higher than the upper end to prevent water droplets trapped inside the cover from flowing down. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model;

[0009] Figure 2 This is a front view of the present invention;

[0010] Figure 3 This is a right-side sectional view of the present invention;

[0011] Figure 4 This is a schematic cross-sectional view of the steps of this utility model;

[0012] Figure 5 This is a schematic diagram of the connection between the present invention and the telescopic belt;

[0013] Figure 6 This is a schematic diagram of the connection between the present invention and the inner cover.

[0014] Explanation of the labels in the diagram:

[0015] Upper slot 1; Lower slot 2; Telescopic belt through-hole 3; Telescopic belt through-slot 4; Limiting plate 41; Step 42; Locking buckle 5; Exhalation port 6; Retaining ring 61; Cover body 7; Telescopic belt 8; Inner cover 9. Detailed Implementation

[0016] Specific Implementation Example 1: Please refer to Figures 1-6This utility model relates to a double-box mask outer cover, including an upper locking groove 1, a lower locking groove 2, two pairs of telescopic strap openings 3, a locking buckle 5, an exhalation port 6, and a cover body 7. The upper locking groove 1, lower locking groove 2, and locking buckle 5 are arranged sequentially from top to bottom along the central axis of the cover body 7. When the double-box mask outer cover is connected to the inner cover 9, the upper locking groove 1 and lower locking groove 2 are respectively locked and connected to the upper and lower ends of the inner cover 9. The locking buckle 5 is fastened to the lower end of the inner cover 9 and is detachably connected to the inner cover 9. The exhalation port 6 is located in the front area of ​​the cover body 7, matching the person's exhalation point, so that hot air can directly... Exhalation is made from inside the cover 7 to prevent water droplets from condensing. Two pairs of telescopic strap openings 3 are respectively located on both sides of the cover 7. Each pair of telescopic strap openings 3 is located at the upper and lower ends of the cover 7. Each pair of telescopic strap openings 3 has a telescopic strap groove 4 connecting the two sides in the middle. A limiting plate 41 is provided in the middle section of the telescopic strap groove 4. When the telescopic strap 8 is installed, both ends pass symmetrically through the two pairs of telescopic strap openings 3 and the telescopic strap groove 4, and pass through the limiting plate 41 above the middle section of the telescopic strap groove 4 to prevent the telescopic strap 8 from sliding and pulling, causing it to get stuck between the cover 7 and the inner cover 9 or to constrict the head and cause discomfort.

[0017] In a further embodiment, such as Figure 4 As shown, a pair of steps 42 are provided on both sides of the limiting plate 41, which shortens the distance between the limiting plate 41 and the bottom of the telescopic belt through groove 4, increases the friction of the telescopic belt 8 sliding in the telescopic belt through groove 4, strengthens the connection between the telescopic belt 8 and the cover 7, and increases stability.

[0018] In a further embodiment, such as Figure 3 As shown, the exhalation port 3 is provided with a baffle ring 61 in the direction towards the inside of the cover 7, so that it matches the air outlet of the inner cover 9 to prevent the exhaled hot air from condensing in other places on the outer cover. The lower end of the baffle ring 61 is higher than the upper end, preventing water droplets trapped inside the cover 7 from flowing down.

[0019] In use, thread the telescopic belt 8 through the two pairs of telescopic belt through holes 3 and the lower part of the limiting plate 41 in sequence to secure the connection between the telescopic belt 8 and the cover 7. Then, snap the upper locking groove 1 and the lower locking groove 2 onto the upper and lower ends of the inner cover 9. After the connection is completed, fasten the locking buckle 5 onto the inner cover 9. After confirming that the connection is correct, put on the installed mask and put the telescopic belt 8 on the head to complete the fixation, and then start working.

Claims

1. A double-box face mask cover, characterized in that: It includes an upper locking slot (1), a lower locking slot (2), two pairs of telescopic strap openings (3), an exhalation port (6), and a mask body (7). The upper locking slot (1) and the lower locking slot (2) are arranged from top to bottom along the central axis of the mask body (7). When the outer cover of the double-box mask is connected to the inner cover (9), the upper locking slot (1) and the lower locking slot (2) are respectively locked and connected to the upper and lower ends of the inner cover (9). The exhalation port (6) is located in the front area of ​​the mask body (7) and matches the person's exhalation point. The two pairs of telescopic strap openings (3) are respectively located on both sides of the mask body (7). Each pair of telescopic strap openings (3) is located at the upper and lower ends of the mask body (7). Each pair of telescopic strap openings (3) has a telescopic strap groove (4) connecting the two sides in the middle. A limiting plate (41) is provided above the middle section of the telescopic strap groove (4).

2. The double-box face mask cover according to claim 1, characterized in that: It also includes a locking buckle (5), which is located below the central axis of the cover (7). The locking buckle (5) is fastened to the lower end of the inner cover (9) and is detachably connected to the inner cover (9).

3. The double-box face mask outer cover according to claim 1, characterized in that: A pair of steps (42) are provided on both sides below the limiting plate (41).

4. The double-box face mask cover according to claim 1, characterized in that: The exhalation port (6) is provided with a retaining ring (61) in the direction of facing the inside of the cover (7).

5. The double-box face mask cover according to claim 4, characterized in that: The lower end of the retaining ring (61) is higher than the upper end.

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