Adjustable breathing mask

Abstract

The utility model belongs to the technical field of breathing masks, and particularly relates to an adjustable breathing mask which comprises an adjustable wearing belt assembly, a face attaching assembly is installed at the end of the adjustable wearing belt assembly, a filtering assembly is installed on the side of the face attaching assembly, the adjustable wearing belt assembly comprises a first wearing bandage, and a second wearing bandage is installed on the side of the first wearing bandage. A fixing clamping block is fixedly connected to the end of the first wearing bandage, a silica gel cushion is fixedly connected to the inner wall of the fixing clamping block, a second wearing bandage is slidably connected to the side of the silica gel cushion, a limiting clamping needle is connected to the interior of the second wearing bandage in a clamped mode, and a pressing clamping block is fixedly connected to the end of the limiting clamping needle. The side of the pressing clamping block is fixedly connected with an anti-disengaging clamping block, and the outer portion of the anti-disengaging clamping block is slidably connected with an anti-disengaging clamping groove. Through adjustment, the mask can be suitable for different users to wear, and the wearing stability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of breathing masks, in particular to an adjustable breathing mask. Background Technique

[0002] Respiration refers to the process of gas exchange between the body and the external environment. The breathing process of a person includes three interrelated links: external respiration, including pulmonary ventilation and pulmonary gas exchange; the transportation of gas in the blood; internal respiration, referring to the gas exchange between tissue cells and blood and the oxidative metabolism within tissue cells. For a normal adult at rest, the optimal breathing rate is once every 6.4 seconds, and the volume of gas inhaled and exhaled each time is approximately 500 milliliters, which is called tidal volume. When a person inhales forcefully until they can no longer inhale, and then exhales forcefully until they can no longer exhale, the volume of gas exhaled at this time is called vital capacity. The vital capacity of normal adult men is about 3500 - 4000 milliliters, and that of women is about 2500 - 3500 milliliters.

[0003] In Chinese Patent No. 202123230624.7, the utility model relates to an adjustable mask for the respiratory department, including a mask body and a limit fixing mechanism. A connecting block is fixedly installed on the outer side of the mask body. A wire passing hole communicating with each other is opened between the left and right sides of the connecting block. A wearing belt body passes through the inner side of the wire passing hole, and a locking slot is opened on the inner side of the wire passing hole. For this adjustable mask for the respiratory department, by setting a sliding block, when the user is using it, the user can wear the mask on the face in advance, and then the user can pull the wearing belt body forward. When the mask body is tightly connected to the user's face, the user can push the sliding block inward to complete the locking and fixing process of the wearing belt body. At this time, the user can push the sliding rod downward to complete the limit fixing process of the sliding block, so that this structure has the advantage of facilitating the user to adjust the length of the wearing belt and is convenient for the user to use.

[0004] The existing adjustable breathing masks only have one wearing strap for fixing the breathing mask. When wearing, the strap may move up and down around the user's head, affecting its fixing effect. In addition, the shape of the existing breathing masks is usually fixed. However, different users have different face shapes, resulting in difficulty for the edges of the mask to fit tightly against the outer side of the user's face, and it is extremely easy for external air to be inhaled through the gaps on the side, affecting its protection effect.

[0005] Therefore, an adjustable breathing mask is proposed for the above problems. Content of the Utility Model

[0006] In order to make up for the deficiencies of the prior art and solve the problems that the existing adjustable breathing mask is only provided with one wearing strap for fixing the breathing mask. When worn, the strap may move up and down around the user's head, affecting its fixing effect. And the shape of the existing breathing mask is usually fixed. However, there are differences in the face shapes of different users, resulting in difficulty in closely fitting the edge of the mask to the outside of the user's face. It is very easy for external air to be inhaled through the gaps on the side, affecting its protective effect.

[0007] The technical solution adopted by the present utility model to solve its technical problems is: An adjustable breathing mask described in the present utility model includes an adjustable wearing strap assembly. The end of the adjustable wearing strap assembly is provided with a face fitting assembly, and a filtering assembly is installed on the side of the face fitting assembly. The adjustable wearing strap assembly includes a first wearing strap. The end of the first wearing strap is fixedly connected with a fixed block, and a silica gel soft pad is fixedly connected to the inner wall of the fixed block. And a second wearing strap is slidably connected to the side of the silica gel soft pad. A limiting pin is snap-fitted inside the second wearing strap, and a pressing block is fixedly connected to the end of the limiting pin. An anti-detachment block is fixedly connected to the side of the pressing block, and an anti-detachment groove is slidably connected to the outside of the anti-detachment block. And a spring is fixedly connected to the side of the pressing block.

[0008] Preferably, the pressing block and the second wearing strap form a detachable structure through the limiting pin, and the limiting pins are equidistantly arranged on the inner wall of the pressing block. And the second wearing strap and the first wearing strap form a sliding structure through the fixed block.

[0009] Preferably, the pressing block and the fixed block form an elastic structure through the spring, and the pressing block and the fixed block form a sliding structure through the anti-detachment block and the anti-detachment groove.

[0010] Preferably, the face fitting assembly includes a first mask layer. The outer wall of the first mask layer is fixedly connected with a second mask layer, and an adjusting strip is fixedly connected to the side of the second mask layer. A bendable metal wire penetrates through the adjusting strip, and a face fitting strip is fixedly connected to the outer wall of the adjusting strip.

[0011] Preferably, the adjusting strip and the bendable metal wire form a nested structure, and the material of the adjusting strip is set as silica gel material. The material of the first mask layer is set as pure cotton material, and the material of the second mask layer is set as rubber material.

[0012] Preferably, the filtering component includes a detachable filter cartridge. One end of the detachable filter cartridge is fixedly connected with an air inlet mesh plate, and a first filter layer is arranged on the inner wall of the air inlet mesh plate. A supporting block is fixedly connected to the inner wall of the first filter layer, and a second filter layer is fixedly connected to the side of the supporting block. A third filter layer is arranged on the inner wall of the second filter layer. The other end of the detachable filter cartridge is fixedly connected with a threaded joint, and a sealing gasket is closely attached to the other end of the threaded joint. A threaded interface is externally threaded to the threaded joint.

[0013] Preferably, the material of the first filter layer is set as ultra-fine polypropylene fiber meltblown material, the material of the second filter layer is set as activated carbon fiber material, the material of the third filter layer is set as non-woven fabric material, and the detachable filter cartridge and the threaded interface form a threaded detachable structure through the threaded joint.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. The present utility model is provided with an adjustable wearing belt assembly. The second wearing strap can be slid and tightened, which is convenient for adjusting according to the head circumferences of different users, enhancing its applicability. Moreover, there are two adjustable wearing belt assemblies, upper and lower, which can be used to wear and fix the breathing mask respectively from above and below the head, facilitating enhancing its fixing effect and preventing the mask from moving up and down.

[0016] 2. The present utility model is provided with a face fitting component. A circle of bendable metal wires and face fitting strips are arranged on the periphery of the mask. The bendable metal wires can be freely and fully adjusted according to the face shapes of users, facilitating the edges of the mask to fit the face shapes of different users, with high flexibility. And in cooperation with the face fitting strips made of silicone material, it is convenient for the edges of the mask to fit the faces of users more closely, preventing external gases from being inhaled by users through the edge gaps without being filtered, and facilitating improving its sealing and protection effect.

[0017] 3. The present utility model is provided with a filtering component. Multiple layers of filtration are carried out, which is convenient for effectively filtering out impurities such as dust, smoke, bacteria, body fluids, etc. in the gas, facilitating better protection for users. And supporting blocks are arranged between the filter layers, which is convenient for separating and supporting each filter layer, preventing them from being closely attached together and affecting the smoothness of air flow through. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 This is a three-dimensional structure schematic diagram of the overall side view of the present utility model;

[0020] Figure 2 This is a three-dimensional structure schematic diagram of the adjustable wearing belt assembly part of the present utility model;

[0021] Figure 3 This is a cross-sectional structure schematic diagram of the connection part between the fixed block and the pressing block of the present utility model;

[0022] Figure 4 This is a cross-sectional structure schematic diagram of the face fitting assembly part of the present utility model;

[0023] Figure 5 This is an exploded structure schematic diagram of the filter assembly part of the present utility model.

[0024] In the figure: 1. Adjustable wearing belt assembly; 2. Face fitting assembly; 3. Filter assembly; 101. First wearing strap; 102. Fixed block; 103. Silicone soft pad; 104. Second wearing strap; 105. Limit pin; 106. Pressing block; 107. Anti-detachment block; 108. Anti-detachment groove; 109. Spring; 201. First mask layer; 202. Second mask layer; 203. Adjusting strip; 204. Bendable metal wire; 205. Face fitting strip; 301. Removable filter cartridge; 302. Air intake net plate; 303. First filter layer; 304. Supporting block; 305. Second filter layer; 306. Third filter layer; 307. Threaded joint; 308. Sealing washer; 309. Threaded interface. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Embodiment 1

[0027] As Figure 1 shown, an adjustable breathing mask includes an adjustable wearing belt assembly 1, a face fitting assembly 2 is installed at the end of the adjustable wearing belt assembly 1, and a filter assembly 3 is installed on the side of the face fitting assembly 2.

[0028] As Figure 2 With Figure 3As shown in the figure, an adjustable breathing mask. The adjustable wearing strap assembly 1 can adjust the wearing straps, making it convenient for different users to wear. The pressing block 106 and the second wearing strap 104 form a detachable structure through the limit pin 105, and the limit pins 105 are arranged at equal intervals on the inner wall of the pressing block 106. Moreover, the second wearing strap 104 and the first wearing strap 101 form a sliding structure through the fixed block 102. The pressing block 106 and the fixed block 102 form an elastic structure through the spring 109. And the pressing block 106 and the fixed block 102 form a sliding structure through the anti - detachment block 107 and the anti - detachment groove 108. The second wearing strap 104 can slide and tighten, facilitating adjustment according to the head circumferences of different users, enhancing its applicability. And there are two adjustable wearing strap assemblies 1, upper and lower, which can be used to wear and fix the breathing mask from above and below the head respectively, facilitating enhancing its fixing effect and preventing the mask from moving up and down.

[0029] As Figure 4 As shown in the figure, an adjustable breathing mask. The face - fitting component 2 is used to make the edge of the mask fit the user's face more closely. The face - fitting component 2 includes the first mask layer 201. The outer wall of the first mask layer 201 is fixedly connected to the second mask layer 202. And the side of the second mask layer 202 is fixedly connected to the adjustment strip 203. A bendable metal wire 204 passes through the inside of the adjustment strip 203. And the outer wall of the adjustment strip 203 is fixedly connected to the face - fitting strip 205. The adjustment strip 203 and the bendable metal wire 204 form a nested structure. And the material of the adjustment strip 203 is set as silicone material, the material of the first mask layer 201 is set as pure cotton material, and the material of the second mask layer 202 is set as rubber material. There is a circle of bendable metal wire 204 and face - fitting strip 205 arranged around the mask. The bendable metal wire 204 can be adjusted freely according to the user's face shape, facilitating making the edge of the mask fit the face shapes of different users, with high flexibility. And it cooperates with the face - fitting strip 205 made of silicone material, facilitating making the edge of the mask fit the user's face more closely, preventing unfiltered external gas from being inhaled by the user through the edge gap, and facilitating improving its sealing and protection effect.

[0030] As Figure 5As shown in the figure, an adjustable breathing mask, the filtering component 3 is used to filter the inhaled air flow. The material of the first filtering layer 303 is set as ultra-fine polypropylene fiber melt-blown material, the material of the second filtering layer 305 is set as activated carbon fiber material, and the material of the third filtering layer 306 is set as non-woven fabric material. The detachable filter cartridge 301 and the threaded interface 309 form a threaded detachable structure through the threaded joint 307. Multiple layers of filtration are convenient for effectively filtering out impurities such as dust, smoke, bacteria, and body fluids in the gas, which is convenient for better protecting the user. And support blocks 304 are arranged between the filtering layers, which is convenient for separating and supporting each filtering layer to prevent them from sticking together and affecting the smoothness of the air flow through.

[0031] Working principle: First, respectively surround the two adjustable wearing belt components 1 behind the head above and below the user's ears, so that the facial fitting component 2 and the filtering component 3 cover the user's mouth and nose. Then, pull the pressing block 106 outwards, which drives the limit pin 105 to move outwards, so that the end of the limit pin 105 disengages from the second wearing strap 104. At this time, the second wearing strap 104 can be pulled to tighten the wearing strap tightly around the user's head. When tightened to the appropriate tightness, release the pressing block 106. Under the action of the spring 109, it is pulled inwards, so that the limit pin 105 penetrates the second wearing strap 104 again and inserts into the internal of the silica gel soft pad 103 to limit and fix the second wearing strap 104.

[0032] Then, according to the user's face shape, bend and adjust the bendable metal wire 204 so that it and the surrounding facial fitting strip 205 can fit the outer side of the user's face. During the use of the user, the inhaled gas will sequentially pass through the intake mesh plate 302, the first filtering layer 303, the second filtering layer 305, and the third filtering layer 306. The intake mesh plate 302 filters some larger impurities. The first filtering layer 303 is used to filter some fine dust or body fluids, etc. The second filtering layer 305 of the activated carbon fiber layer is used to adsorb and filter some bacteria and harmful gases. The third filtering layer 306 is used to absorb the moisture in the exhaled gas of the user. After the use, the threaded joint 307 can be rotated and unscrewed, and a new filtering mechanism can be replaced during the next use.

[0033] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An adjustable breathing mask, characterized in that: It comprises an adjustable wearing belt assembly (1), a face fitting assembly (2) is installed at the end of the adjustable wearing belt assembly (1), and a filter assembly (3) is installed on the side of the face fitting assembly (2); The adjustable wearing strap assembly (1) comprises a first wearing strap (101), the end of the first wearing strap (101) is fixedly connected to a fixed card block (102), the inner wall of the fixed card block (102) is fixedly connected to a silicone soft pad (103), and the side of the silicone soft pad (103) is slidably connected to a second wearing strap (104), the inner snap connection of the second wearing strap (104) is connected to a limiting card pin (105), and the end of the limiting card pin (105) is fixedly connected to a clamping card block (106), the side of the clamping card block (106) is fixedly connected to an anti-dropping card block (107), the outside of the anti-dropping card block (107) is slidably connected to an anti-dropping card slot (108), and the side of the clamping card block (106) is fixedly connected to a spring (109).

2. An adjustable breathing mask according to claim 1, characterized in that: The clamping block (106) forms a detachable structure with the second wearing strap (104) through the limiting clamp pin (105), and the limiting clamp pin (105) is arranged at equal intervals with respect to the inner wall of the clamping block (106), and the second wearing strap (104) forms a sliding structure with the first wearing strap (101) through the fixing clamp block (102).

3. An adjustable breathing mask according to claim 1, characterized in that: The clamping block (106) forms an elastic structure with the fixed block (102) through the spring (109), and the clamping block (106) forms a sliding structure with the anti-dropping block (107), the anti-dropping slot (108) and the fixed block (102).

4. An adjustable breathing mask according to claim 1, characterized in that: The facial fitting component (2) comprises a first mask layer (201), the outer wall of the first mask layer (201) is fixedly connected to a second mask layer (202), and the side of the second mask layer (202) is fixedly connected to an adjustment strip (203), a bendable metal wire (204) passes through the interior of the adjustment strip (203), and the outer wall of the adjustment strip (203) is fixedly connected to a facial fitting strip (205).

5. An adjustable breathing mask according to claim 4, characterized in that: The adjustment strip (203) and the bendable metal wire (204) form a nested structure, and the material of the adjustment strip (203) is set to be a silicone material, the material of the first mask layer (201) is set to be a pure cotton material, and the material of the second mask layer (202) is set to be a rubber material.

6. An adjustable breathing mask according to claim 1, characterized in that: The filter assembly (3) comprises a detachable filter cartridge (301), one end of the detachable filter cartridge (301) is fixedly connected to an air inlet mesh plate (302), and the inner wall of the air inlet mesh plate (302) is provided with a first filter layer (303), the inner wall of the first filter layer (303) is fixedly connected to a support block (304), and the side of the support block (304) is fixedly connected to a second filter layer (305), and the inner wall of the second filter layer (305) is provided with a third filter layer (306), the other end of the detachable filter cartridge (301) is fixedly connected to a threaded joint (307), and the other end of the threaded joint (307) is tightly fitted with a sealing gasket (308), and the external thread of the threaded joint (307) is connected to a threaded interface (309).

7. An adjustable breathing mask according to claim 6, characterized in that: The material of the first filter layer (303) is set to be an ultra-fine polypropylene fiber melt-blown material, the material of the second filter layer (305) is set to be an activated carbon fiber material, and the material of the third filter layer (306) is set to be a non-woven fabric material. The detachable filter cartridge (301) forms a threaded detachable structure through a threaded joint (307) and a threaded interface (309).

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