Respirator head harness buckle and respirator
By introducing a flexible layer into the headband buckle of the breathing mask, the problem of the magnet and hard plastic bursting due to thermal expansion and contraction is solved, extending the service life and improving reliability and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN SUNNYGRAND HEALTHCARE TECH CO LTD
- Filing Date
- 2025-03-20
- Publication Date
- 2026-07-21
AI Technical Summary
In existing magnetic face masks, the magnets and hard plastic are easily affected by thermal expansion and contraction, which can cause the hard plastic to burst and crack, affecting its service life and performance.
A first flexible layer is introduced into the headband buckle of the breathing mask, located between the support and the adsorption magnet, to provide deformation space, absorb the stress of thermal expansion and contraction, and prevent the support from bursting and cracking.
The flexible layer's deformation capability eliminates the pressure caused by thermal expansion and contraction, extending the service life and performance of the breathing mask headband buckle and improving its reliability and stability.
Smart Images
Figure CN224523764U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical device technology, and in particular to a breathing mask headband buckle and a breathing mask. Background Technology
[0002] The magnetic clasp of a sleep apnea machine's magnetic mask is a key component for ensuring a stable and comfortable fit. To guarantee the stability of the clasp, existing methods typically involve wrapping the magnet with hard rubber. However, both the magnet and the hard rubber are susceptible to thermal expansion and contraction, which can cause the hard rubber to burst or crack, severely impacting the lifespan and performance of the magnetic mask. Utility Model Content
[0003] Therefore, it is necessary to provide a breathing mask headband buckle to address the problem that magnets and hard plastic are easily affected by thermal expansion and contraction, which can lead to the hard plastic bursting and cracking, seriously affecting the service life and performance of magnetic face masks.
[0004] A breathing mask headband buckle, comprising:
[0005] A support body having a mounting cavity, the support body being used to connect to a headband;
[0006] An adsorption magnet is housed in the mounting cavity, the adsorption magnet being used to magnetically engage with a hook mounted on a mask bracket; and...
[0007] A first flexible layer is located between the cavity wall of the mounting cavity and the adsorption magnet.
[0008] In one embodiment, the first flexible layer covers the adsorption magnet.
[0009] In one embodiment, the support body is provided with a boss for hooking with the hook.
[0010] In one embodiment, the side of the boss near the mounting cavity is angled to the support body to form a limiting groove with the support body, and the limiting groove is used to engage with the protrusion of the hook.
[0011] In one embodiment, the boss is at least partially arc-shaped and protrudes toward the side away from the mounting cavity.
[0012] In one embodiment, the boss includes a limiting platform and two guide platforms. The limiting platform is arc-shaped, and the two guide platforms are located on the side of the limiting platform close to the mounting cavity and are respectively connected to both ends of the limiting platform. In the direction from the limiting platform to the mounting cavity, the distance between the two guide platforms gradually increases.
[0013] This utility model also provides a breathing mask that can solve at least one of the above-mentioned technical problems.
[0014] A breathing mask includes the aforementioned breathing mask headband buckle, and also includes a hook and a mask bracket. The hook is installed on the mask bracket, and a mating magnet is provided inside the hook for magnetically engaging with the adsorption magnet.
[0015] In one embodiment, the hook includes a main body and a second flexible member. The main body has a receiving cavity for accommodating the mating magnet, and the second flexible member is housed in the receiving cavity and covers the mating magnet.
[0016] In one embodiment, the outer contour of the main body gradually widens in the direction of the hook pointing towards the headband buckle of the breathing mask, so that the outer contour edge of the main body forms a protrusion, which is used to engage with the limiting groove on the headband buckle of the breathing mask.
[0017] In one embodiment, the mask bracket is provided with a mounting groove, the side wall of the mounting groove is provided with a limiting block, and the outer side of the main body is provided with a groove. The groove is configured to engage with the limiting block when the main body is inserted into the mounting groove, so as to prevent the main body from coming out of the mounting groove.
[0018] Beneficial effects:
[0019] The breathing mask headband buckle provided in this embodiment includes a support body, an adsorption magnet, and a first flexible layer. The support body has an mounting cavity for connecting to the headband. The adsorption magnet is housed in the mounting cavity and magnetically engages with a hook mounted on a mask bracket. The first flexible layer is located between the cavity wall of the mounting cavity and the adsorption magnet. In this application, the first flexible layer has good deformation capability. By setting the first flexible layer between the cavity wall of the mounting cavity and the adsorption magnet, the first flexible layer can deform to provide space for the thermal expansion and contraction of the support body and the magnet. This eliminates pressure within the mounting cavity, prevents the support body from bursting or cracking, and thus improves the service life and performance of the breathing mask headband buckle.
[0020] This utility model also provides a breathing mask, including the aforementioned breathing mask headband buckle, as well as a hook and a mask bracket. The hook is installed on the mask bracket, and a mating magnet is provided inside the hook for magnetic attraction with the adsorption magnet. This breathing mask can achieve at least one of the above-mentioned technical effects. Attached Figure Description
[0021] Figure 1 A schematic diagram of the headband buckle of a breathing mask provided in an embodiment of this utility model. Figure 1 .
[0022] Figure 2 A schematic diagram of the headband buckle of a breathing mask provided in an embodiment of this utility model. Figure 2 .
[0023] Figure 3 This is a cross-sectional view of a breathing mask headband buckle provided in an embodiment of the present invention.
[0024] Figure 4 This is a schematic diagram of a breathing mask provided in one embodiment of the present invention.
[0025] Figure 5 This is a partial schematic diagram of a breathing mask provided in one embodiment of the present invention.
[0026] Figure 6 This is a cross-sectional view of the hook in a breathing mask provided in one embodiment of the present invention.
[0027] Figure 7 This is a cross-sectional view showing the engagement of the hook and the headband buckle in a breathing mask according to an embodiment of the present invention.
[0028] Icon labels:
[0029] 100-Breathing mask headband buckle; 110-Support body; 111-Mounting cavity; 112-Boss; 113-Limiting groove; 114-Guide platform; 115-Connecting hole; 116-Matching groove; 117-Limiting platform; 120-Adsorption magnet; 130-First flexible layer; 200-Hook; 210-Matching magnet; 220-Main body; 221-Receiving cavity; 222-Protrusion; 223-Groove; 224-Insertion groove; 225-Guide surface; 230-Second flexible layer; 300-Mask bracket; 310-Mounting groove; 320-Insertion block; 330-Limiting block. Detailed Implementation
[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0031] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0032] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0034] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0035] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0036] In magnetic face mask buckles, the buckle typically consists of a hard rubber coating around a magnet. Because the hard rubber and the magnet 120 are made of different materials, there is a difference in thermal expansion and contraction between them during seasonal temperature changes. This causes the magnet to exert a force on the hard rubber during these expansions and contractions, potentially leading to the support 110 bursting or cracking. To address this issue, this application provides a breathing mask headband buckle 100.
[0037] See Figure 1 , Figure 2 and Figure 3 , Figure 1 A schematic diagram of the headband buckle of a breathing mask provided in an embodiment of this utility model. Figure 1 . Figure 2 A schematic diagram of the headband buckle of a breathing mask provided in an embodiment of this utility model. Figure 2 . Figure 3 This is a cross-sectional view of a breathing mask headband buckle provided in an embodiment of the present invention. The breathing mask headband buckle 100 provided in one embodiment of this application includes a support body 110, an adsorption magnet 120, and a first flexible layer 130; the support body 110 has an mounting cavity 111 for connecting to a headband; the adsorption magnet 120 is housed in the mounting cavity 111 and is used for magnetically engaging with a hook 200 mounted on a mask bracket 300; the first flexible layer 130 is located between the cavity wall of the mounting cavity 111 and the adsorption magnet 120.
[0038] Specifically, the first flexible layer 130 in this application has good deformation capability. By providing the first flexible layer 130 between the cavity wall of the mounting cavity 111 and the adsorption magnet 120, the first flexible layer 130 can deform to provide space for the thermal expansion and contraction of the support 110 and the adsorption magnet 120. This eliminates the relative force between the adsorption magnet 120 and the support 110, reduces the pressure exerted by the adsorption magnet 120 on the mounting cavity 111, and prevents the support 110 from bursting or cracking, thereby improving the service life and performance of the breathing mask headband buckle 100. Preferably, the support 110 is made of hard plastic.
[0039] See Figure 1 , Figure 2 and Figure 3 In one embodiment, a first flexible layer 130 covers the adsorption magnet 120. Specifically, the first flexible layer 130 covers the entire circumference of the adsorption magnet 120, that is, the first flexible layer 130 is provided between the adsorption magnet 120 and the cavity wall of the mounting cavity 111, so that there are deformation pores between the adsorption magnet 120 and the cavity wall of the mounting cavity 111, thereby stably eliminating the pressure exerted by the adsorption magnet 120 on the mounting cavity 111, avoiding the support 110 from bursting and cracking, and improving the service life and performance of the breathing mask headband buckle 100.
[0040] In this application, the injection molding process is used. During the preparation of the breathing mask headband buckle 100, a first flexible layer 130 is first attached to the outside of the adsorption magnet 120, and then a hard plastic is wrapped around it for injection molding. The first flexible layer 130 can absorb the residual stress in the injection molding process, thereby improving the service life and performance of the breathing mask headband buckle 100.
[0041] Furthermore, the first flexible layer 130 is a soft adhesive, which can be a flexible material such as silicone or polyurethane adhesive. The thickness of the first flexible layer 130 is 0.05mm-5mm, specifically, it can be 0.2mm.
[0042] Furthermore, the support 110 can be made of acrylonitrile-butadiene-styrene copolymer, polycarbonate resin, or other hard materials, and the thickness of the support 110 can range from 0.5mm to 10mm, specifically, it can be 5mm.
[0043] See Figure 1 and Figure 2 In one embodiment, the support body 110 has a connection hole 115 on the side away from the mounting cavity 111. The connection hole 115 is used for the headband to be threaded through. The headband buckle 100 of the breathing mask is magnetically engaged with the hook 200 on the mask bracket 300 so that the headband is placed on the head to fix the breathing mask at the nose and mouth.
[0044] Furthermore, the connecting hole 115 is an elongated hole, which gives the headband a certain width, thereby reducing stress and improving comfort when the headband is placed on the head.
[0045] See Figure 1 and Figure 3In one embodiment, the support 110 is provided with a boss 112 for engaging with the hook 200. Specifically, when the adsorption magnet 120 inside the breathing mask headband buckle 100 magnetically engages with the cooperating magnet 210 on the hook 200, the headband is fitted over the head and tightened, so that the headband exerts a pulling force on the breathing mask headband buckle 100 that is away from the hook 200. Since the boss 112 engages with the hook 200, the direction in which the breathing mask headband buckle 100 exerts a pulling force on the breathing mask headband buckle 100 is restricted from being away from the hook 200, so that the breathing mask headband buckle 100 and the hook 200 are stably connected, thereby improving the reliability of the breathing mask headband buckle 100.
[0046] Furthermore, the mounting cavity 111 is located between the boss 112 and the connecting hole 115, and is located on one side of the width direction of the connecting hole 115. Thus, when the boss 112 is hooked with the hook 200, the adsorption magnet 120 in the breathing mask headband buckle 100 and the mating magnet 210 on the hook 200 can be stably magnetically attracted and engaged, thereby improving the reliability of the breathing mask headband buckle 100.
[0047] When it is necessary to disassemble the breathing mask headband buckle 100 and the hook 200, a force opposite to the first direction can be applied to the breathing mask headband buckle 100 to separate the boss 112 from the hook 200, so that the adsorption magnet 120 inside the breathing mask headband buckle 100 is separated from the cooperating magnet 210 on the hook 200.
[0048] See Figure 1 and Figure 3 In one embodiment, the side of the boss 112 near the mounting cavity 111 is set at an angle to the support body 110 to form a limiting groove 113 with the support body 110. The limiting groove 113 is used to engage with the protrusion 222 of the hook 200, thereby limiting the breathing mask headband buckle 100 from moving away from the hook 200 in the arrangement direction of the breathing mask headband buckle 100 and the hook 200, so that the boss 112 and the hook 200 are stably hooked together, improving the reliability of the breathing mask headband buckle 100.
[0049] See Figure 1 and Figure 3 In one embodiment, the boss 112 is at least partially arc-shaped and protrudes away from the mounting cavity 111, such that the hook 200 is partially covered by the boss 112. This restricts the movement of the mask headband buckle 100 relative to the hook 200 along a first direction, which is perpendicular to the direction in which the headband applies tension to the mask headband buckle 100 and to the arrangement direction of the mask headband buckle 100 and the hook 200. This ensures a stable engagement between the boss 112 and the hook 200, improving the reliability of the mask headband buckle 100. In this embodiment, the perpendicularity can also be approximately perpendicular.
[0050] It should be noted that the direction in which the headband applies tension to the breathing mask headband buckle 100 is perpendicular to the arrangement direction of the breathing mask headband buckle 100 and the hook 200. The first direction is perpendicular to the direction in which the headband applies tension to the breathing mask headband buckle 100 and the arrangement direction of the breathing mask headband buckle 100 and the hook 200. This restricts the movement of the headband relative to the hook 200 in all directions, ensuring a stable connection between the boss 112 and the hook 200, and improving the reliability of the breathing mask headband buckle 100.
[0051] See Figure 1 and Figure 3 In one embodiment, the boss 112 includes a limiting platform 117 and two guide platforms 114. The limiting platform 117 is arc-shaped, and the two guide platforms 114 are located on the side of the limiting platform 117 near the mounting cavity 111 and are respectively connected to the two ends of the limiting platform 117. In the direction from the limiting platform 117 to the mounting cavity 111, the distance between the two guide platforms 114 gradually increases.
[0052] Specifically, a mating groove 116 is formed between the limiting platform 117 and the guide platform 114 and the support body 110. The position of the mating groove 116 corresponds to the position of the mounting cavity 111, and the side of the mating groove 116 away from the limiting platform 117 has a larger opening, which can play a guiding role, making it easy for the hook 200 to slide into the mating groove 116, so that the adsorption magnet 120 and the mating magnet 210 are attracted, and the protrusion 222 on the hook 200 extends into the limiting groove 113 and is stably connected with the limiting platform 117. Preferably, the two guide platforms 114 and the limiting platform 117 are integrally formed.
[0053] Furthermore, the radius of the limiting platform 117 is greater than π, thereby increasing the limiting range of the limiting platform 117 on the hook 200, and further improving the stability of the fit between the breathing mask headband buckle 100 and the hook 200.
[0054] See Figure 1 , Figure 3 , Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of a breathing mask provided in one embodiment of the present invention. Figure 5 This is a partial schematic diagram of a breathing mask provided in one embodiment of the present invention. The present invention also provides a breathing mask, including the aforementioned breathing mask headband buckle 100, as well as a hook 200 and a mask support 300. The hook 200 is mounted on the mask support 300, and a mating magnet 210 is provided inside the hook 200 for magnetic attraction with the adsorption magnet 120.
[0055] Specifically, the first flexible layer 130 in this application has good deformation capability. By providing the first flexible layer 130 between the cavity wall of the mounting cavity 111 and the adsorption magnet 120, the first flexible layer 130 can deform to provide space for the thermal expansion and contraction of the support 110 and the magnet. This can eliminate the pressure exerted on the mounting cavity 111 by the adsorption magnet 120, avoid the support 110 from bursting and cracking, and thus improve the service life and performance of the breathing mask.
[0056] See Figure 5 and Figure 6 , Figure 6 This is a cross-sectional view of the hook in a breathing mask provided according to an embodiment of the present invention. In one embodiment, the hook 200 includes a main body 220 and a second flexible layer 230. The main body 220 is provided with a receiving cavity 221 for accommodating a mating magnet 210. The second flexible layer 230 is accommodated in the receiving cavity 221 and covers the mating magnet 210.
[0057] Specifically, the second flexible layer 230 in this application has good deformation capability. By providing the second flexible layer 230 between the cavity wall of the receiving cavity 221 and the mating magnet 210, the second flexible layer 230 can deform to provide space for the thermal expansion and contraction of the main body 220 and the mating magnet 210. This eliminates the pressure exerted by the mating magnet 210 on the receiving cavity 221, preventing the main body 220 from bursting or cracking and failing, thereby improving the service life and performance of the hook 200. The second flexible layer 230 completely covers the outer side of the mating magnet 210, meaning that the first flexible layer 130 is provided between the mating magnet 210 and the cavity wall of the receiving cavity 221. The main body 220 is made of hard plastic.
[0058] In this application, an injection molding process is used. First, a second flexible layer 230 is attached to the outside of the mating magnet 210, and then a hard plastic is wrapped around it for injection molding. The second flexible layer 230 can absorb residual stress during the injection molding process, thereby improving the service life and performance of the hook 200.
[0059] Furthermore, the second flexible layer 230 is a soft adhesive, which can be a flexible material such as silicone or polyurethane adhesive. The thickness of the second flexible layer 230 is 0.05mm-5mm, specifically, it can be 0.2mm.
[0060] Furthermore, the main body 220 can be made of acrylonitrile-butadiene-styrene copolymer, polycarbonate resin, or other hard materials, and the thickness of the main body 220 can range from 0.5mm to 10mm, specifically, it can be 5mm.
[0061] See Figure 6 and Figure 7 , Figure 7This is a cross-sectional view showing the engagement of a hook and a headband buckle in a breathing mask according to an embodiment of the present invention. In one embodiment, the outer contour of the main body 220 gradually widens in the direction from the hook 200 to the headband buckle 100, so that the outer contour edge of the main body 220 forms a protrusion 222, which is used to engage with the limiting groove 113 on the headband buckle 100.
[0062] Specifically, by making the protrusion 222 and the main body 220 integrally molded, the stability of the protrusion 222 is greatly improved, thereby preventing the protrusion 222 from separating from the main body 220 and causing the headband buckle 100 and hook 200 to fail to hook up, thus improving the reliability of the breathing mask. Preferably, the protrusion 222 is annular and arranged around the circumference.
[0063] See Figure 6 and Figure 7 In one embodiment, the mask bracket 300 is provided with a mounting groove 310, the side wall of the mounting groove 310 is provided with a limiting block 330, and the outer side of the main body 220 is provided with a groove 223. The groove 223 is configured to engage with the limiting block 330 when the main body 220 is inserted into the mounting groove 310, so as to restrict the main body 220 from coming out of the mounting groove 310.
[0064] Specifically, by providing a groove 223 on the outer wall of the main body 220, when the hook 200 is installed in the mounting groove 310, the groove 223 and the limiting block 330 are inserted and engaged to stably install the hook 200 in the mounting groove 310, thereby improving the stability of the connection between the hook 200 and the mask bracket 300 and thus improving the reliability of the breathing mask.
[0065] Furthermore, the groove 223 is arranged around the circumference of the main body 220, and the corresponding limiting block 330 is arranged around the circumference of the mounting groove 310, thereby further improving the stability of the connection between the hook 200 and the mask bracket 300 and improving the reliability of the breathing mask.
[0066] Furthermore, the side of the hook 200 away from the headband buckle 100 of the breathing mask has a guide surface 225 arranged around the entire circumference of the main body 220. In the direction from the headband buckle 100 to the hook 200, the distance between the guide surfaces 225 gradually decreases, thereby facilitating the hook 200 to slide into the mounting groove 310 of the mask bracket 300.
[0067] See Figure 6 and Figure 7In one embodiment, the main body 220 is provided with a insertion groove 224 on the side away from the headband buckle 100 of the breathing mask. The insertion groove 224 is configured to engage with the insertion block 320 on the bottom wall of the mounting groove 310 when the main body 220 is inserted into the mounting groove 310 of the mask bracket 300, thereby further improving the stability of the connection between the buckle 200 and the mask bracket 300 and improving the reliability of the breathing mask.
[0068] Furthermore, the insertion slots 224 are arranged circumferentially around the main body 220, and the corresponding insertion blocks 320 are arranged circumferentially around the mounting slots 310, thereby further improving the stability of the connection between the hook 200 and the mask bracket 300 and improving the reliability of the breathing mask. The number of insertion slots 224 can be two or more, with each insertion slot 224 arranged radially at intervals along the main body 220, and the number of insertion blocks 320 corresponding to the number of insertion slots 224.
[0069] In other embodiments, the insertion slot 224 can be set on the hook 200 and the insertion block 320 can be set on the main body 220, as long as it can achieve a stable connection between the hook 200 and the mask bracket 300.
[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0071] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A headband buckle for a breathing mask, characterized in that, The headband buckle of the breathing mask includes: A support body having a mounting cavity, the support body being used to connect to a headband; An adsorption magnet is housed in the mounting cavity, the adsorption magnet being used to magnetically engage with a hook mounted on a mask bracket; and... A first flexible layer is located between the cavity wall of the mounting cavity and the adsorption magnet.
2. The headband buckle of the breathing mask according to claim 1, characterized in that, The first flexible layer covers the adsorption magnet.
3. The headband buckle of the breathing mask according to claim 1 or claim 2, characterized in that, The support body is provided with a boss, which is used to hook with the hook.
4. The headband buckle of the breathing mask according to claim 3, characterized in that, The side of the boss near the mounting cavity is set at an angle to the support body to form a limiting groove with the support body. The limiting groove is used to insert and cooperate with the protrusion of the hook.
5. The headband buckle of the breathing mask according to claim 4, characterized in that, The boss is at least partially arc-shaped and protrudes to the side away from the mounting cavity.
6. The headband buckle of the breathing mask according to claim 4, characterized in that, The boss includes a limiting platform and two guide platforms. The limiting platform is arc-shaped. The two guide platforms are located on the side of the limiting platform close to the mounting cavity and are respectively connected to the two ends of the limiting platform. In the direction from the limiting platform to the mounting cavity, the distance between the two guide platforms gradually increases.
7. A breathing mask, characterized in that, The breathing mask headband buckle according to any one of claims 1-6 further includes a hook and a mask bracket, the hook being installed on the mask bracket, and the hook having a mating magnet inside, the mating magnet being used to magnetically engage with the adsorption magnet.
8. The breathing mask according to claim 7, characterized in that, The hook includes a main body and a second flexible member. The main body is provided with a receiving cavity for accommodating the mating magnet. The second flexible member is housed in the receiving cavity and covers the mating magnet.
9. The breathing mask according to claim 8, characterized in that, In the direction from the buckle to the headband buckle of the breathing mask, the outer contour of the main body gradually widens so that the outer contour edge of the main body forms a protrusion, which is used to engage with the limiting groove on the headband buckle of the breathing mask.
10. The breathing mask according to claim 8, characterized in that, The mask bracket is provided with a mounting groove, and a limiting block is provided on the side wall of the mounting groove. The outer side of the main body is provided with a groove, which is configured to engage with the limiting block when the main body is inserted into the mounting groove, so as to prevent the main body from coming out of the mounting groove.