Quick release structure of a respiratory mask and a respiratory mask

Abstract

The present application relates to a quick release structure of a respiratory mask and the respiratory mask, and relates to the technical ventilation treatment field.The quick release structure of the respiratory mask of the present application comprises a quick release unit, the quick release unit is used for connecting the headband of the respiratory mask with the frame of the respiratory mask, so as to fix the respiratory mask with the head of a user;Wherein, the quick release unit is configured to be detachably connected with the frame, and the quick release unit can be separated from the frame when the headband provides a tightening force.

Description

Technical Field

[0001] This invention relates to the field of ventilation therapy technology, and particularly to a rapid release structure for a breathing mask and the breathing mask itself. Background Technology

[0002] A breathing mask typically consists of a pad, a frame, and a headband. The headband secures the frame and pad to the user's face. Therefore, during normal wear, the headband provides a tightening force to ensure a close contact between the frame and pad and the user's face. Existing breathing masks require a release force sufficient to overcome the headband's tightening force to release from the user's face, making release somewhat difficult, especially when the tightening force is high (i.e., the headband is tightly fastened). Summary of the Invention

[0003] The present invention provides a quick-release structure for a breathing mask and a breathing mask, which solves at least one of the above-mentioned technical problems.

[0004] According to a first aspect of the present invention, the present invention provides a quick-release structure for a breathing mask, including a quick-release unit for connecting the headband of the breathing mask to the frame of the breathing mask to secure the breathing mask to the user's head.

[0005] The quick-release unit is configured to be detachably connected to the frame, and the quick-release unit can be separated from the frame without overcoming the tightening force when the headband provides a tightening force.

[0006] In one embodiment of the first aspect, the quick-release unit is configured such that one side is fixedly connected to the headband and the other side is detachably connected to the frame, and the quick-release unit can change its relative position to the frame when the headband provides a tightening force and / or the connection between the quick-release unit and the frame can undergo elastic deformation to separate from the frame.

[0007] In one embodiment of the first aspect, the quick-release unit includes a buckle, one side of which is rotatably connected to the frame and the other side of which is fixedly connected to the headband;

[0008] The buckle is provided with an anti-rotation part. When the buckle rotates to its maximum rotation position, the anti-rotation part contacts the frame, thereby separating the buckle from the frame.

[0009] In one embodiment of the first aspect, the buckle is further provided with a first rotating arm and a second rotating arm, the first rotating arm being disposed at one end of the buckle that is inclined upward, the first rotating arm and the second rotating arm being spaced apart, and the gap between them forming a rotating groove for cantilever rotation connection with the frame.

[0010] The anti-rotation part is located on the side of the first rotating arm.

[0011] In one embodiment of the first aspect, the inner wall of the rotating groove has an arcuate curve, the central angle of which is greater than 180°.

[0012] In one embodiment of the first aspect, the upper end of the first rotating arm and / or the second rotating arm is provided with a guide structure, the guide structure being an inclined surface inclined toward the rotating groove.

[0013] In one embodiment of the first aspect, the adjacent sidewalls of the first rotating arm and the second rotating arm are respectively configured to be recessed in a direction away from each other.

[0014] In one embodiment of the first aspect, the number of the first rotating arms is one or more, and the plurality of the first rotating arms are spaced apart in the extending direction of the first rotating arms.

[0015] In one embodiment of the first aspect, the number of the second rotating arms is one or more, and the plurality of the second rotating arms are spaced apart in the extending direction of the second rotating arms.

[0016] In one embodiment of the first aspect, the quick-release unit includes a latch, on which a first rotating arm and a second rotating arm are also provided. The first rotating arm is disposed at an upwardly inclined end of the latch, and the first rotating arm and the second rotating arm are spaced apart, with the gap between them forming a rotating groove for cantilever rotational connection with the frame.

[0017] When the buckle rotates to its maximum rotation position, the first rotating arm deforms under the action of force, causing the size of the rotating groove to increase, so that the rotating groove can be separated from the frame.

[0018] In one embodiment of the first aspect, the thickness of the first rotating arm at the point where it connects to the second rotating arm is less than the thickness of other parts of the first rotating arm.

[0019] In one embodiment of the first aspect, the buckle is further provided with grips on both sides, and the outer side of the grips is provided with an anti-slip structure.

[0020] In one embodiment of the first aspect, the buckle is further provided with a cord hole that extends between the grip portions on both sides of the buckle.

[0021] According to a second aspect of the present invention, a breathing mask includes a quick-release structure as described above, characterized in that it further includes a headband and a frame, wherein the quick-release unit is connected to the headband and the frame respectively.

[0022] Compared with the prior art, the advantage of the present invention is that by setting a quick-release unit, which is detachably connected to the frame of the breathing mask, it can be separated from the frame without overcoming the tightening force when the headband provides tightening force, thereby realizing the rapid release of the breathing mask, which is simpler and more convenient to operate. Attached Figure Description

[0023] The invention will now be described in more detail with reference to embodiments and the accompanying drawings.

[0024] Figure 1 This is a three-dimensional structural diagram of a breathing mask in an embodiment of the present invention, showing the state in which the fastening part is detached from the frame;

[0025] Figure 2 yes Figure 1 Enlarged view at point A;

[0026] Figure 3 This is a three-dimensional structural diagram of the clasp viewed from the outside in an embodiment of the present invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the buckle as viewed from the inside and above in an embodiment of the present invention;

[0028] Figure 5 This is a three-dimensional structural diagram of the buckle as viewed from the inside and below in an embodiment of the present invention;

[0029] Figure 6 This is a rear view of the buckle in an embodiment of the present invention;

[0030] Figure 7 yes Figure 6 Sectional view at BB;

[0031] Figure 8 This is a schematic diagram of the gripper portion in another embodiment of the present invention (see reference). Figure 7 (the location of the cut);

[0032] Figure 9 This is a schematic diagram of the gripper structure in another embodiment of the present invention (see reference). Figure 7 (the location of the cut);

[0033] Figure 10This is a schematic diagram of the structure of the second rotating arm in another embodiment of the present invention (reference). Figure 7 (the location of the cut);

[0034] Figure 11 This is a three-dimensional structural diagram of the clasp viewed from the inside top in another embodiment of the present invention;

[0035] Figure 12 This is a three-dimensional structural diagram of the clasp viewed from the inside top in another embodiment of the present invention;

[0036] Figure 13 This is a three-dimensional structural diagram of the clasp viewed from the inside top in another embodiment of the present invention;

[0037] Figure 14 This is a three-dimensional structural diagram of the headband and frame connected in an embodiment of the present invention;

[0038] Figure 15 for Figure 14 A schematic diagram of the mid-section θ;

[0039] Figure 16 This is a top view of the headband in its normal assembled state in an embodiment of the present invention;

[0040] Figure 17 This is a top view of an embodiment of the present invention, showing the buckle rotated to just interfere with the frame;

[0041] Figure 18 This is a diagram illustrating the process of the buckle releasing from the frame in an embodiment of the present invention;

[0042] Figure 19 This is a cross-sectional view of the buckle and frame after they are connected in another embodiment of the present invention (see reference). Figure 14 (Position of the midsection θ);

[0043] Figure 20 yes Figure 19 Cross-sectional view of the buckle detached from the frame (reference) Figure 14 (Position of the midsection θ).

[0044] Figure label:

[0045] 1. Framework;

[0046] 11. Hook and loop;

[0047] 110. First support side; 111. Second support side; 112. Cantilever; 113. Annular sidewall;

[0048] 102. Pipe bend;

[0049] 3. Hook and latch; 301. Inclined section; 302. Body;

[0050] 31. Rope threading hole; 32. Grip; 33. First rotating arm; 34. Second rotating arm; 35. Anti-rotation part; 36. Rotation groove; 321. Anti-slip structure; 37. Inclined surface;

[0051] 7. Headband. Detailed Implementation

[0052] The invention will now be further described with reference to the accompanying drawings.

[0053] like Figure 1 As shown, the present invention provides a quick-release structure for a breathing mask, which includes a quick-release unit for connecting the headband 7 of the breathing mask to the frame 1 of the breathing mask to fix the breathing mask to the user's head.

[0054] In some implementations, the quick-release unit is configured to be detachably connected to the frame 1, and the quick-release unit can be separated from the frame 1 when the headband 7 provides a tightening force F1. In other words, the quick-release unit can achieve rapid release of the breathing mask without overcoming the tightening force F1 of the headband 7 when it is separated from the frame 1.

[0055] In some embodiments, the quick-release unit is configured such that one side is fixedly connected to the headband and the other side is detachably connected to the frame 1. When the headband 7 provides a tightening force F1, the quick-release unit can change its relative position with the frame 1 and / or the connection between the quick-release unit and the frame 1 can undergo elastic deformation to separate from the frame 1. For example, the quick-release unit can be rotated relative to the frame 1, thereby changing its relative position with the frame 1; or the connection between the quick-release unit and the frame 1 can undergo elastic deformation to separate the quick-release unit from the frame 1.

[0056] In other words, when the quick-release unit separates from the frame 1, the headband 7 is not loosened (the headband 7 also provides a tightening force F1), so the breathing mask can be quickly released without overcoming the tightening force F1 of the headband 7.

[0057] Specifically, such as Figures 2-20 As shown, the quick-release unit includes a latch 3, as... Figure 3 and Figure 4 As shown, the fastener 3 includes a body 302 and an inclined portion 301 connected to the body 302. The body 302 has a generally flat structure, and the inclined portion 301 is an inclined plate that slopes upwards from the body 302. Figure 7 As shown, the tilt angle α of the tilted part 301 (the angle between the tilted part 301 and the body 302) can be 30°-50°, for example 36°. The tilt angle α of the tilted part 301 helps to connect the buckle 3 to the frame 1 and helps to achieve rapid release of the breathing mask.

[0058] A rotating connection part can be provided on the main body 302, wherein the rotating connection part is used to form a rotating connection with the cooperating rotating part of the frame 1, so that the buckle 3 can rotate relative to the frame 1 within a certain angle range.

[0059] like Figure 1 and Figure 2 As shown, the rotating part of the frame 1 includes hooks 11 disposed on the frame 1. The hooks 11 are symmetrically distributed on both sides of the frame 1, and each hook 11 can serve as a connection point for connection with the headband 7. Specifically, the hook 11 includes a first support side 110, a second support side 111, and a cantilever 112 connecting the first support side 110 and the second support side 111. The first support side 110 and the second support side 111 are respectively supported on both sides of the cantilever 112, and together with the cantilever 112, form a ring structure. Further, the cantilever 112 is a columnar structure with a diameter between 2.4mm and 6.8mm, preferably 3mm to 4mm.

[0060] As described above, since the inclined portion 301 has an inclination angle α, when the buckle 3 is connected to the frame 1, the inclined portion 301 can extend further into the annular structure formed by the first support side 110, the second support side 111 and the cantilever 112 without hitting other walls of the frame 1.

[0061] like Figure 1 and Figure 2 As shown, the first support side 110 and the second support side 111 extend obliquely toward each other, and when the buckle 3 is rotated to its maximum rotation position, the oblique first support side 110 and the second support side 111 help to form the lever structure described below.

[0062] like Figures 3-8 As shown, the rotating connection part is constructed as a rotating groove 36 provided on the body 302 of the hook 3, which can cooperate with the cantilever 112 of the hook 11. After the rotating groove 36 is engaged with the cantilever 112, the hook 3 can rotate with the cantilever 112 as the rotation axis.

[0063] The rotating groove 36 can have various structures and implementations. For example, the rotating groove 36 can be defined by the space between one or more rotating arms that protrude upward from the surface of the body 302 (or the inclined portion 301). Alternatively, the rotating groove 36 can also be a groove formed by the surface of the body 302 (or the inclined portion 301) being recessed inward.

[0064] The rotating groove 36 can be constructed as a cylindrical groove or an arc-shaped recess. For example, when the rotating groove 36 is a cylindrical groove, its diameter can be set according to the diameter of the cantilever 112. The diameter of the rotating groove 36 needs to be slightly smaller than the diameter of the cantilever 112, for example, 0.05mm-2.00mm smaller than the diameter of the cantilever 112. This ensures smooth assembly between the two, and under assembly conditions, a cylindrical connection can be formed between them, thereby allowing the buckle 3 to rotate freely relative to the frame 1.

[0065] Furthermore, such as Figures 3-13 As shown, the rotating groove 36 is defined by a first rotating arm 33 and a second rotating arm 34 protruding from the buckle 3. More specifically, the first rotating arm 33 is protrudingly disposed on the inclined portion 301, and the second rotating arm 34 is protrudingly disposed on the body 302, both of which are constructed in a generally columnar structure.

[0066] The first rotating arm 33 and the second rotating arm 34 protrude outward from the back side (the side closer to the user's face) of the buckle 3, and there is a gap between them. Therefore, the portion between the first rotating arm 33 and the second rotating arm 34 can define a rotating groove 36. In addition, the inner walls of the first rotating arm 33 and the second rotating arm 34 are recessed in a direction away from each other, thus forming a rotating groove 36 with an arcuate curve.

[0067] Furthermore, the radial cross-section of the rotating groove 36 is an incomplete circle (arc shape), such as... Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, one side of the radial section of the rotating groove 36 is defined by the side wall of the first rotating arm 33, and the other side is defined by the side wall of the second rotating arm 34.

[0068] Furthermore, the central angle of the arc curve of the rotating groove 36 is greater than 180°. This allows the opening of the rotating groove 36 at the top to be smaller than the diameter of the cantilever 112. When the rotating groove 36 is engaged with the cantilever 112, the opening rests on the cantilever 112, requiring slight pressure to allow the cantilever 112 to enter the rotating groove 36. Once the cantilever 112 is inside the rotating groove 36, the opening ensures that the cantilever 112 is not easily dislodged. As mentioned above, after the buckle 3 engages with the frame 1, the buckle 3 can rotate relative to the frame 1 at a certain angle. When the rotation angle exceeds the limit (i.e., when the buckle 3 rotates to its maximum rotation position), the buckle 3 can detach from the frame 1 and separate from it. Therefore, through this removal method, the breathing mask can be conveniently and quickly released without overcoming the tightening force F1 of the headband 7.

[0069] In a preferred embodiment, to achieve the above-mentioned function, the fastener 3 of the present invention includes at least one anti-rotation portion 35 (see...). Figures 4-6 and Figures 11-13 That is, the fastener 3 is quickly released from the frame 1 by the anti-rotation part 35.

[0070] Specifically, the anti-rotation part 35 is located on the side of the first rotating arm 33, and there can be one or more. When the buckle 3 rotates beyond the angle range, the anti-rotation part 35 will interfere with the frame 1. When further force is applied, the buckle 3 can be disengaged from the frame 1, thereby achieving the effect of rapid release.

[0071] More specifically, such as Figure 5 and Figure 6 As shown, the width of the first rotating arm 33 is less than the overall width of the inclined portion 301, and the first rotating arm 33 protrudes from the inclined portion 301. Therefore, the anti-rotation portion 35 is the area on the surface of the inclined portion 301 located on both sides of the first rotating arm 33. When the rotating groove 36 rotates to its maximum position, since the inclined portion 301 has an inclination angle α, and the first support side 110 and the second support side 111 are both inclined, the anti-rotation portion 35 can contact the first support side 110 or the second support side 111 of the frame 1. If force is applied to the rotating groove 36 at this time, the rotating groove 36 can be disengaged from the cantilever 112, thereby realizing the rapid separation of the buckle 3 from the frame 1.

[0072] The following will combine Figures 14-18 The principle of the fastener 3 of the present invention, which is rapidly released by the anti-rotation part 35, is explained in detail.

[0073] Figure 15 for Figure 14 A schematic diagram of the mid-section θ. Figures 16-18 This is a top view showing the process of buckle 3 being released from frame 1.

[0074] Specifically, please see Figures 15-18 In the assembled state, the cantilever 112 of frame 1 is engaged in the rotating groove 36 of buckle 3 (e.g., Figure 15 (As shown). Since the opening of the rotating groove 36 is smaller than the diameter of the cantilever 112, and the diameter of the rotating groove 36 is 0.05mm-2.00mm smaller than the diameter of the cantilever 112, a cylindrical kinematic pair can be formed between the cantilever 112 and the rotating groove 36, allowing the buckle 3 to rotate freely relative to the frame 1. Furthermore, it ensures that the cantilever 112 is not easily dislodged from the rotating groove 36 during rotation.

[0075] Figure 16 This is a top view of the assembly process. (Example:) Figure 16 As shown, the anti-rotation part 35 is not in contact with the frame 1 at this time, so the buckle 3 can rotate a certain angle relative to the frame 1.

[0076] Figure 17 In the top view where the latch 3 is rotated to its maximum rotation position, the anti-rotation part 35 contacts the first support side 110 and / or the second support side 111 of the hook 11. When the anti-rotation part 35 contacts the frame 1, the latch 3 can no longer rotate.

[0077] exist Figure 17 At the maximum rotation position shown, if a rotational torque is applied to the latch 3, since the anti-rotation part 35 is in contact with the first support side 110 and / or the second support side 111 of the hook 11, the latch 3 will form a lever structure. The anti-rotation part 35 serves as the fulcrum of the lever. When force is applied again from the side of the latch 3 away from the anti-rotation part 35, the cantilever 112 can be freed from the restriction of the first rotating arm 33 and the second rotating arm 34 and disengaged from the rotating groove 36, thereby achieving the effect of rapid release of the latch 3.

[0078] In some alternative implementations, please refer to Figure 15 , Figure 19 and Figure 20 The buckle 3 is quickly released from the frame 1 by changing the size of the rotating slot 36.

[0079] Specifically, the first rotating arm 33 of the buckle 3 has a certain elastic deformation capability. When the tightening force F1 from the headband is relatively small, the cantilever 112 can be properly engaged in the rotating groove 36 (e.g., Figure 19 As shown). When the headband tightening force F1 increases, the first rotating arm 33 will undergo elastic deformation (as shown). Figure 20 (As shown). When the clamping force F1 is greater than the critical value, the elastic deformation of the first rotating arm 33 increases the width of the rotating groove 36, so the cantilever 112 can get rid of the restriction of the first rotating arm 33 and the second rotating arm 34 and disengage from the rotating groove 36.

[0080] Furthermore, the increase in the tension force F1 can be attributed to the addition of a pull-out force. In practical applications, when wearing a breathing mask normally, the tension force F1 of the headband is within the normal range, ensuring the mask's seal and comfort. When rapid release of the breathing mask is required, the user simply pulls the headband to increase the tension force F1 beyond a critical value. This causes the first rotating arm 33 to elastically deform and the cantilever 112 to disengage from the rotating groove 36, achieving the same rapid release.

[0081] Of course, the increase in tightening force F1 can also be caused by improper wearing force. For example, but not limited to, tightening the headband with force exceeding the user's tolerance to ensure the mask's seal. This application scenario mainly occurs when putting on a mask for a user who has lost consciousness. In this application scenario, buckle 3 ensures that the tightening force is within the normal range when putting on the mask for the user.

[0082] It should be added that the elastic deformation of the first rotating arm 33 can be achieved in a variety of ways. For example, the local thickness of the first rotating arm 33 can be reduced to make it locally deformable. For example, the thickness at the connection between the first rotating arm 33 and the second rotating arm 34 can be made smaller than the thickness of other parts of the first rotating arm 33.

[0083] In addition, the first rotating arm 33 can also be made of a material with low hardness or high elasticity (such as PP) to achieve easy deformation.

[0084] Therefore, it is understandable that in embodiments where the fastener 3 and cantilever 112 are quickly released by changing the size of the rotating groove 36, the anti-rotation part 35 may not be provided.

[0085] Based on the above embodiments, such as Figures 7-13 As shown, the first rotating arm 33 and the second rotating arm 34 can be implemented in various ways.

[0086] like Figure 7 In the optional embodiment shown, the first rotating arm 33 may protrude from the outer edge of the inclined portion 301, and the second rotating arm 34 is disposed opposite to it. The first rotating arm 33 and the second rotating arm 34 are configured to be approximately the same length and extend toward each other.

[0087] like Figure 8 In the optional embodiment shown, the length of the first rotating arm 33 is longer than the length of the second rotating arm 34, and its entire length extends away from the second rotating arm 34; or conversely, as shown... Figure 9 In the optional embodiment shown, the length of the first rotating arm 33 is shorter than the length of the second rotating arm 34, and the second rotating arm 34 extends entirely away from the first rotating arm 33. Alternatively, it can be conceived as follows: Figure 10 In the optional embodiment shown, the first rotating arm 33 extends as a whole toward the second rotating arm 34 in a direction away from each other.

[0088] like Figures 4-6 In the optional embodiment shown, there is one second rotating arm 34. There may also be multiple second rotating arms 34, spaced apart in their extending direction. Figure 11In the optional embodiment shown, there are two second rotating arms 34, which are spaced apart.

[0089] like Figure 12 In the optional embodiment shown, there are three second rotating arms 34, which are spaced apart, and the two outermost second rotating arms 34 extend toward the side wall of the latch 3 (inclined portion 301 or body 302) to connect with the side wall of the latch 3.

[0090] like Figures 4-6 In the optional embodiment shown, there is one first rotating arm 33. There can also be multiple first rotating arms 33, spaced apart in their extending direction. For example... Figure 13 In the optional embodiment shown, there are two first rotating arms 33, which are spaced apart.

[0091] Figures 7-13 The various forms of the first rotating arm 33 and the second rotating arm 34 shown can be combined or substituted with each other, for example Figure 13 The second rotating arm 34 shown can be replaced by... Figure 11 The second rotating arm 34 is shown in the figure.

[0092] and Figure 12 Unlike the second rotating arm 34 shown, the outermost first rotating arm 33, whether there is one or more, does not extend to connect with the side wall of the latch 3 (inclined portion 301). Therefore, the side of the first rotating arm 33 can form an anti-rotation portion 35 with the surface of the inclined portion 301.

[0093] In addition, a guide structure may be provided on the upper side of the first rotating arm 33 and / or the second rotating arm 34. The guide structure can guide the cantilever 112 into the rotating groove 36, which facilitates the assembly between the buckle 3 and the frame 1.

[0094] like Figure 8 In the optional embodiment shown, the guide structure may be an inclined surface 37 formed on the first rotating arm 33, the inclined surface 37 being inclined toward the rotating groove 36.

[0095] like Figure 9 In the alternative embodiment shown, the guide structure may be an inclined surface 37 formed on the second rotating arm 34.

[0096] like Figure 10 In the optional embodiment shown, the guide structure may be provided on the inclined surface 37 on both the first rotating arm 33 and the second rotating arm 34.

[0097] Furthermore, the inclination angle of the inclined surface 37 on the first rotating arm 33 can be approximately equal to the inclination angle α of the inclined portion 301.

[0098] like Figures 3-13 As shown, the hook and loop 3 may also include a gripper portion 32, which is located on both sides of the cord hole 31. The gripper portion 32 extends to and connects to the side of the hook and loop 3. More specifically, the gripper portion 32 extends along the outer contour of the hook and loop 3. On the one hand, the gripper portion 32 can increase the strength of the hook and loop 3; on the other hand, the gripper portion 32 can provide a point of leverage for the installation and removal of the hook and loop 3.

[0099] For easier gripping, such as Figures 3-5 As shown, the side edge of the gripper 32 is also provided with an anti-slip structure 321, which can increase the surface roughness of the gripper 32. The anti-slip structure 321 can be a structure protruding from the surface of the gripper 32 or a structure recessed from the surface of the gripper 32. Figure 3 and Figure 4 As shown, the anti-slip structure 321 consists of multiple anti-slip strips spaced apart along the extension direction of the gripper portion 32. The lengths of the anti-slip strips can be the same or different; for example, the lengths of the multiple anti-slip strips gradually decrease along the extension direction of the gripper portion 32.

[0100] like Figures 3-6 As shown, the buckle 3 body 302 is also provided with a cord hole 31, through which the headband 7 can pass. The end of the headband 7 passes through the cord hole 31 and folds back to connect with the headband 7 itself (as shown). Figure 14 (as shown), thereby securing the headband 7 to the buckle 3.

[0101] like Figure 3 and Figure 4 As shown, the cord hole 31 can be square or rectangular (or "racetrack-shaped"). The length and width of the cord hole 31 can be set according to the width and thickness of the headband 7, respectively. For example, the length of the cord hole 31 is approximately equal to the width of the headband 7, and the width of the cord hole 31 is approximately equal to the thickness of the headband 7. Further, the length of the cord hole 31 is slightly less than the width of the headband 7, and / or the width of the cord hole 31 is slightly less than the thickness of the headband 7. This ensures the stability of the assembly between the headband 7 and the buckle 3, preventing unexpected relative slippage between them during use.

[0102] The snap fastener 3 can be made of rigid plastic materials, such as PC (polycarbonate), PP (polypropylene) or ABS (acrylonitrile butadiene styrene copolymer board), etc.

[0103] It should be noted that, in addition, the present invention also provides a breathing mask, including the quick-release structure described above, as well as the headband 7 and frame 1 described above.

[0104] The breathing mask of the present invention can be a full-face breathing mask, a nasal breathing mask, a nasal pad breathing mask, or a mouth breathing mask, etc.

[0105] Through the above-described structure of the buckle 3 and headband 7, the breathing mask of the present invention has at least the following advantages: when removing the breathing mask, it is not necessary to overcome the tightening force F1 of the headband 7, and the breathing mask can be quickly and easily released.

[0106] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A rapid-release structure for a breathing mask, characterized in that, Includes a quick-release unit for connecting the headband of the breathing mask to the frame of the breathing mask to secure the breathing mask to the user's head; The quick-release unit is configured to be detachably connected to the frame, and the quick-release unit can be separated from the frame without overcoming the tightening force when the headband provides a tightening force; The quick-release unit includes a buckle, one side of which is rotatably connected to the frame, and the other side of which is fixedly connected to the headband; The fastener includes a body and an inclined portion connected to the body, wherein the inclined portion is an inclined plate that slopes upward from the body. The buckle is provided with a first rotating arm and an anti-rotation part. The first rotating arm protrudes from the inclined portion, and the width of the first rotating arm is smaller than the overall width of the inclined portion. The anti-rotation portion is located on the side of the first rotating arm on the inclined portion. When the buckle is rotated to its maximum rotation position, the anti-rotation part contacts the frame, thereby separating the buckle from the frame.

2. The rapid release structure according to claim 1, characterized in that, The quick-release unit is configured such that one side is fixedly connected to the headband and the other side is detachably connected to the frame. When the headband provides a tightening force, the quick-release unit can change its relative position to the frame and / or the connection between the quick-release unit and the frame can undergo elastic deformation to separate from the frame.

3. The rapid release structure according to claim 1, characterized in that, The buckle is also provided with a second rotating arm, and the first rotating arm and the second rotating arm are spaced apart, with the gap between them forming a rotating groove for cantilever rotation connection with the frame.

4. The rapid release structure according to claim 3, characterized in that, The inner wall of the rotating groove has an arc-shaped curve, and the central angle of the arc-shaped curve is greater than 180°.

5. The rapid release structure according to claim 3, characterized in that, The upper end of the first rotating arm and / or the second rotating arm is provided with a guide structure, which is an inclined surface that is inclined toward the rotating groove.

6. The rapid release structure according to claim 3, characterized in that, The adjacent sidewalls of the first rotating arm and the second rotating arm are respectively constructed to be recessed in a direction away from each other.

7. The rapid release structure according to claim 3, characterized in that, The number of the first rotating arms is one or more, and the plurality of the first rotating arms are spaced apart in the extending direction of the first rotating arms.

8. The rapid release structure according to claim 3, characterized in that, The number of the second rotating arms is one or more, and the multiple second rotating arms are spaced apart in the extending direction of the second rotating arms.

9. The rapid release structure according to claim 1 or 2, characterized in that, The buckle is also provided with a second rotating arm, the first rotating arm and the second rotating arm are spaced apart, and the gap between them forms a rotating groove for cantilever rotation connection with the frame. When the buckle rotates to its maximum rotation position, the first rotating arm deforms under the action of force, causing the size of the rotating groove to increase, so that the rotating groove can be separated from the frame.

10. The rapid release structure according to claim 9, characterized in that, The thickness of the first rotating arm at the point where it connects to the second rotating arm is less than the thickness of other parts of the first rotating arm.

11. The rapid release structure according to claim 1, characterized in that, The buckle is also provided with grips on both sides, and the outer side of the grips is provided with an anti-slip structure.

12. The rapid release structure according to claim 11, characterized in that, The buckle is also provided with a cord hole, which extends between the grips on both sides of the buckle.

13. A breathing mask, characterized in that, Includes the fast-release structure according to any one of claims 1-12.

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