Breathing mask

Abstract

The breathing mask comprises a supporting frame, a bent pipe, a mounting base, a silica gel pad and an exhaust ring, the outer contour of the upper portion of the mounting base is in a trapezoid shape, the silica gel pad is arranged on the mounting base in a sleeving mode, the outer contour of the upper portion of the silica gel pad is in a trapezoid shape, and a first supporting part and a second supporting part are arranged on the inner wall of the silica gel pad. According to the breathing mask, due to the fact that the outer contour of the upper portion of the silica gel pad is trapezoid and the outer contour of the upper portion of the mounting base used for bearing the silica gel pad is also trapezoid, after the breathing mask is worn, the space of the position of the nose bridge can be released, the silica gel pad cannot press the nose bridge, and the nose bridge cannot have pressing discomfort even if the breathing mask is worn for a long time; the part, matched with the outer side of the nose of the patient, on the silica gel pad cannot collapse under the action of the two second supporting parts, the part, matched with the outer side of the nose of the patient, on the silica gel pad cannot collapse and press the outer side of the nose after being worn, the space of the outer side of the nose can also be released, and the outer side of the nose cannot feel uncomfortable due to pressing after being worn for a long time.

Description

Technical Field

[0001] The invention relates to the field of medical equipment, and in particular to a breathing mask. Background Art

[0002] The breathing mask is an important medical device. It is connected to the ventilation circuit of the ventilator and can help the human body maintain normal breathing, increase lung ventilation and improve respiratory function.

[0003] With existing respiratory masks, after being worn, the silicone pad covers the patient's mouth and nose, and the shape of the upper part of the silicone pad is consistent with the contour of the human nose. After wearing, the patient's nose bridge will also be covered by the silicone pad, which will cause discomfort after wearing for a long time. In addition, the parts of the silicone pad that adapt to the two sides of the nose bridge (i.e., the outside of the nose) are usually thinner. After wearing, since the material of the silicone pad is relatively soft, the part of the silicone pad that adapts to the outside of the nose is easy to collapse and press on the outside of the patient's nose, which will cause discomfort after wearing for a long time. If the patient's nose bridge is high, the discomfort of the nose bridge and the outside of the nose will be stronger, giving the patient a poor wearing experience.

[0004] In addition, the exhaust holes of the breathing mask are an important component in the design. Their function is to ensure that the carbon dioxide inside the mask can be discharged smoothly and prevent the patient from re-inhaling the carbon dioxide exhaled by the patient. This is crucial to preventing carbon dioxide retention. Therefore, the exhaust holes need to be cleaned regularly to ensure that they are unobstructed. In existing breathing masks, the exhaust holes are basically integrated with the mask body, that is, the exhaust holes are integrally formed on the support frame of the mask body. When the exhaust holes need to be cleaned, the entire support frame component of the mask body needs to be removed, which is cumbersome and the exhaust holes cannot be disassembled and cleaned separately, which brings great inconvenience to the user.

[0005] In addition, most of the existing respiratory masks are worn in a forehead-blocking manner, with a T-shaped fixing frame just above the mask. When the mask covers the mouth and nose, the T-shaped fixing frame is located just in front of the bridge of the nose and forehead. This wearing method will make the patient's nose, eyes and eyebrows feel blocked, and will cause discomfort after wearing for a long time; some respiratory masks are not covered by the fixing frame at the forehead and nose when worn, but the fixing frame of such respiratory masks is usually connected to the mask as a whole, and the fixing frame cannot be removed independently. In this case, when a component in the fixing frame or the mask body is damaged, it needs to be replaced as a whole, which is costly, and the angles of the fixing frame and the mask are also fixed. When a patient with a wider brow wears it, the fixing frame will be clamped on both sides of the patient's head, which will be very uncomfortable over time. When a patient with a narrower brow wears it, there will be a large gap between the fixing frame and both sides of the head, which will be very uncomfortable over time, and the patient cannot have a comfortable wearing experience. Summary of the invention

[0006] The object of the present invention is to provide a breathing mask to solve at least one of the above technical problems.

[0007] According to one aspect of the present invention, there is provided a breathing mask, comprising:

[0008] Support frame;

[0009] An elbow for connecting the ventilation pipeline of the ventilator, wherein the first end of the elbow is inserted and fixed in the support frame;

[0010] A mounting seat, wherein a through hole is provided on the mounting seat, the outer contour of the upper portion of the mounting seat is in a trapezoidal shape, the mounting seat is arranged on the support frame and the first end of the bent pipe is inserted into the through hole;

[0011] A silicone pad, the silicone pad is sleeved on the mounting seat, the outer contour of the upper part of the silicone pad is trapezoidal, the inner wall of the silicone pad is provided with a first support portion and a second support portion adapted to the outer contour of the nose, the number of the second support portions is two, the two second support portions are distributed on opposite sides of the inner wall of the silicone pad, the first support portion is ringed on the inner wall of the silicone pad close to the port of the mounting seat, and the first support portion is integrally connected with the second support portion; and

[0012] An exhaust ring is provided with an exhaust hole and is arranged between the outer wall of the bent pipe and the inner wall of the support frame.

[0013] The breathing mask of the present invention has a curved pipe connected to the ventilation pipeline of the respirator, and the respirator can provide breathing support to the patient through the curved pipe, and the silicone pad covers the patient's mouth and nose. Since the outer contour of the upper part of the silicone pad is trapezoidal and the outer contour of the upper part of the mounting seat used to support the silicone pad is also trapezoidal, the space at the position of the patient's nose bridge can be released after wearing it, and the silicone pad will not be pressed on the patient's nose bridge, and the nose bridge will not feel uncomfortable after wearing it for a long time. In addition, since two second supporting parts that are adapted to the outer contour of the nose are provided on the inner wall of the silicone pad, after wearing it, the part of the silicone pad that is adapted to the outer side of the patient's nose will not collapse under the action of the two second supporting parts. At the same time, the first supporting part on the inner wall of the silicone pad can ensure the overall strength of the silicone pad near the port of the mounting seat, ensuring the silicone The portion of the pad that fits the outside of the patient's nose will not collapse under the action of the two second supporting parts. In this way, after wearing, the portion of the silicone pad that fits the outside of the patient's nose will not collapse on the outside of the patient's nose, and the space at the outside of the patient's nose can also be released. After wearing for a long time, there will be no discomfort on the outside of the nose due to being pressed. Moreover, even if the patient's nose bridge is high, the design of the upper outer contour of the silicone pad, the design of the upper outer contour of the mounting seat that supports the silicone pad, and the design of the two second supporting parts on the inner wall of the silicone pad are sufficient to ensure that the silicone pad will not be pressed on the bridge of the nose and the portion of the silicone pad that fits the outside of the patient's nose will not be pressed on the outside of the nose, which can bring a comfortable wearing experience to the patient. After wearing the breathing mask of the present invention, the carbon dioxide generated by the patient's breathing can be discharged through the exhaust holes on the exhaust ring.

[0014] Furthermore, the mounting seat includes an upper support portion, a left support portion, a right support portion and a lower support portion which are sequentially connected end to end and enclosed in the periphery of the perforation, the outer contour of the upper support portion is arranged at an obtuse angle to the outer contour of the left support portion, and the outer contour of the upper support portion is arranged at an obtuse angle to the outer contour of the right support portion.

[0015] A circle of slots is provided on the inner wall of the end of the silicone pad close to the mounting seat, and the outer edges of the upper support part, the left support part, the right support part and the lower support part are all accommodated in the slots.

[0016] Therefore, the outer edge of the mounting seat can be snapped into the slot on the silicone pad to support the upper part of the silicone pad. The outer contour of the upper support part of the mounting seat and the outer contours of the left support part and the right support part are arranged at an obtuse angle to ensure that the outer contour of the upper part of the silicone pad is trapezoidal and does not deform, thereby ensuring that the silicone pad will not press on the patient's nose bridge, so that the space at the position of the patient's nose bridge is released.

[0017] Furthermore, a convex buckle is provided on the outer wall of the bent pipe, a notch is provided on the inner wall of the exhaust ring, the exhaust ring is sleeved on the bent pipe, and the convex buckle is snapped into the notch.

[0018] Therefore, the exhaust hole is independently arranged on the exhaust ring, and the exhaust ring is installed between the outer wall of the bent pipe and the inner wall of the support frame. When the exhaust hole needs to be cleaned, the exhaust ring is pulled out from the inner wall of the support frame, and then the exhaust ring is pulled outward from the bent pipe, and the convex buckle on the bent pipe is withdrawn from the notch on the exhaust ring. At this time, the exhaust ring can be removed from the bent pipe for independent cleaning. After cleaning, the exhaust ring is put on the bent pipe, and make sure that the notch on the exhaust ring is aligned with the convex buckle on the bent pipe, and then the exhaust ring is pressed between the outer wall of the bent pipe and the inner wall of the support frame. The assembly and disassembly of the exhaust ring is very convenient, so that the exhaust holes on the exhaust ring can be cleaned independently and quickly, which brings great convenience to users.

[0019] Furthermore, the exhaust ring includes an inner ring wall, an outer ring wall and an inclined wall. The end of the inner ring wall is connected to the end of the outer ring wall through the inclined wall. There are multiple exhaust holes, and the multiple exhaust holes are evenly arranged on the inclined wall. The notch is arranged on the inner ring wall. The inner ring wall is sleeved on the bent pipe, and the outer ring wall abuts against the inner wall of the support frame.

[0020] Therefore, the notch on the inner ring wall is used to snap-fit ​​with the convex buckle on the bent pipe, the outer ring wall is used to abut against the inner wall of the support frame, and the inclined wall provides a design area for the exhaust hole. The circular arrangement of multiple exhaust holes can ensure that the carbon dioxide generated by the patient's breathing can be discharged smoothly and quickly.

[0021] Furthermore, a circle of limiting protrusions is provided on the outer wall of the bent pipe.

[0022] One end of the convex buckle is arranged on the limiting protrusion, and the other end of the convex buckle is in an arc shape. The shape of the notch is adapted to the shape of the convex buckle, and the notch is in an expanded shape.

[0023] When the end of the exhaust ring abuts against the limiting protrusion, the convex buckle is clamped in the notch.

[0024] Therefore, when installing the exhaust ring, as long as the end of the exhaust ring abuts against the limiting protrusion, it can ensure that the convex buckle is snapped into the notch, and the installation of the exhaust ring is very convenient. At the same time, when installing the exhaust ring, the convex buckle with an arc-shaped end can make the convex buckle quickly snap into the notch. The convex buckle with an arc-shaped end can play a certain guiding role, so that the convex buckle can be quickly snapped into the notch on the exhaust ring. In addition, the flared notch can also make the convex buckle quickly snap into the notch.

[0025] Furthermore, a first annular protrusion is provided on the support frame, a buckle is provided on the inner wall of the perforation, a groove adapted to the buckle is provided on the outer wall of the first annular protrusion, the first end of the bent pipe is inserted and fixed in the first annular protrusion, the first annular protrusion is inserted in the perforation, and the buckle is clamped in the groove.

[0026] Therefore, the presence of the first annular protrusion can facilitate the installation and fixation of the mounting seat on the support frame, and the mounting seat and the support frame can be firmly installed together through the cooperation of the buckle and the groove, and are not easy to loosen.

[0027] Furthermore, a second annular protrusion is provided on the mounting seat and is surrounded by the periphery of the through hole, and the second annular protrusion is sleeved on the first annular protrusion.

[0028] Therefore, the mounting seat and the support frame can be further firmly mounted together through the nesting cooperation of the second annular protrusion and the first annular protrusion, and are not easy to loosen.

[0029] Furthermore, it also includes a bent left fixing frame and a bent right fixing frame,

[0030] At least one first plug buckle is provided on one side of the support frame, at least one first plug slot is provided on the bending position of the left fixing frame, the first plug buckle is plugged into the first plug slot, the free end of the first plug buckle is sloped, at least one first through hole is provided on the first plug buckle, and at least one first protrusion is provided on the side wall of the first plug slot.

[0031] When the first plug buckle is plugged into the first plug slot, the first protrusion is accommodated in the first through hole.

[0032] At least one second plug buckle is provided on the other side of the support frame, at least one second plug slot is provided on the bending position of the right fixing frame, the second plug buckle is plugged into the second plug slot, the free end of the second plug buckle is sloped, at least one second through hole is provided on the second plug buckle, and at least one second protrusion is provided on the side wall of the second plug slot.

[0033] When the second plug buckle is plugged into the second plug slot, the second protrusion is accommodated in the second through hole.

[0034] The left fixing frame is provided with a left connecting buckle, and the right fixing frame is provided with a right connecting buckle.

[0035] Therefore, the left connecting buckle on the left fixing frame and the right connecting buckle on the right fixing frame are connected by a strap. After the silicone pad covers the mouth and nose, the left fixing frame is located on one side of the head (the right side of the head from the wearer's perspective), and the right fixing frame is located on the other side of the head (the left side of the head from the wearer's perspective). The strap between the left fixing frame and the right fixing frame is put on the head and fixed. During breathing, the patient's forehead and nose are not blocked by the fixing frame, and there will be no discomfort after wearing for a long time. The left fixing frame and the supporting frame are connected by the first plug-in buckle and the first plug-in buckle. The cooperation of the connecting slots realizes a detachable connection. When installing the left fixing frame, it is sufficient to plug the first plug buckle on the supporting frame into the first plug slot on the left fixing frame. When disassembling the left fixing frame, it is sufficient to pull the left fixing frame off the supporting frame. The assembly and disassembly of the left fixing frame are very convenient. Moreover, the first plug buckle with a sloped free end can be easily inserted into the first plug slot. During the plugging process, the first protrusion in the first plug slot can be easily slid into the first through hole on the first plug buckle, ensuring that the first plug buckle and the first plug slot are firmly plugged. The right fixing frame is firm and not easy to loosen; the right fixing frame and the supporting frame are detachably connected through the cooperation of the second plug-in buckle and the second plug-in slot. When installing the right fixing frame, just plug the second plug-in buckle on the supporting frame into the second plug-in slot on the right fixing frame. When disassembling the right fixing frame, just pull the right fixing frame out of the supporting frame. The installation and disassembly of the right fixing frame are very convenient, and the second plug-in buckle with a sloped free end can be easily inserted into the second plug-in slot, and during the plug-in process, the second protrusion in the second plug-in slot can be easily slid to the second The second through hole on the plug-in buckle ensures that the second plug-in buckle and the second plug-in slot are firmly plugged in and not easy to loosen; the left fixing frame and the right fixing frame are both detachably connected to the support frame, and the left fixing frame and the right fixing frame can be removed independently. In this way, when the left fixing frame, the right fixing frame or one of the components of the support frame is damaged, it is only necessary to remove the damaged component separately for replacement, and there is no need to replace the entire component, which can reduce costs. Moreover, during transportation and when not in use, the left fixing frame and the right fixing frame can be removed from the support frame for easy transportation and storage.

[0036] Further, the left fixing frame includes a left bending portion and a left fixing portion, the first plug-in slot is arranged on the left bending portion, the left connecting buckle includes a first left connecting buckle and a second left connecting buckle, the first left connecting buckle is arranged on one end of the left bending portion, one end of the left fixing portion is arranged on the other end of the left bending portion, and the second left connecting buckle is arranged on the other end of the left fixing portion.

[0037] The right fixing frame includes a right bending portion and a right fixing portion, the second plug-in slot is arranged on the right bending portion, the right connecting buckle includes a first right connecting buckle and a second right connecting buckle, the first right connecting buckle is arranged on one end of the right bending portion, one end of the right fixing portion is arranged on the other end of the right bending portion, and the second right connecting buckle is arranged on the other end of the right fixing portion.

[0038] Therefore, the left fixing frame can be connected to the first right connecting buckle on the right fixing frame through the first left connecting buckle and a strap, and the left fixing frame can be connected to the second right connecting buckle on the right fixing frame through the second left connecting buckle and another strap, and the two straps are fixed to the head (both sides and the back of the head), thereby ensuring that the breathing mask is firmly fixed on the patient's head and is not easy to loosen or shift.

[0039] Furthermore, a first bendable adjustment portion is provided on the left fixing frame, and a second bendable adjustment portion is provided on the right fixing frame.

[0040] Therefore, the left fixing frame can adaptively adjust the angle between it and the support frame through the first bendable adjustment portion, and the right fixing frame can adaptively adjust the angle between it and the support frame through the second bendable adjustment portion, so that the left fixing frame and the right fixing frame can adapt to denominations of different widths to ensure wearing comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of a breathing mask of the present invention;

[0042] Figure 2 for Figure 1 A schematic structural diagram of the breathing mask from another perspective shown;

[0043] Figure 3 for Figure 1 A schematic structural diagram of a breathing mask from another perspective shown;

[0044] Figure 4 for Figure 2 The schematic diagram of the disassembled structure of the breathing mask shown;

[0045] Figure 5 for Figure 3 The schematic diagram of the disassembled structure of the breathing mask shown;

[0046] Figure 6 for Figure 3 The schematic diagram of the disassembled structure of the breathing mask shown;

[0047] Figure 7 for Figure 4 A schematic diagram of the structure of the silicone pad in the respiratory mask shown;

[0048] Figure 8 for Figure 7 The silicone pad shown is a schematic structural diagram of another perspective showing hidden lines;

[0049] Fig. 9 for Figure 8 A schematic structural diagram of the silicone pad from another perspective;

[0050] Fig.10 for Figure 7 A schematic structural diagram of the silicone pad from another perspective;

[0051] Fig.11 for Fig.10 A cross-sectional view of the silicone pad along the AA direction is shown;

[0052] Fig.12 for Fig.10 The cross-sectional view of the silicone pad along the BB direction is shown;

[0053] Fig.13 for Figure 4 A schematic diagram of the structure of the mounting seat in the breathing mask shown;

[0054] Fig.14 for Figure 4 A schematic diagram of the structure of the silicone pad and the mounting base in the respiratory mask shown;

[0055] Fig.15 for Figure 4 A schematic diagram of the structure of the silicone pad in the respiratory mask shown;

[0056] Fig.16 for Figure 2 The schematic diagram of the structure of the elbow and the exhaust ring in the breathing mask shown;

[0057] Fig.17 for Fig.16 The schematic diagram of the split structure of the elbow and the exhaust ring is shown;

[0058] Fig.18 for Figure 2 A schematic diagram of the structure of the exhaust ring in the breathing mask shown;

[0059] Fig.19 for Fig.18 A schematic structural diagram of the exhaust ring from another perspective shown;

[0060] Fig. 20 for Figure 6 A schematic diagram of the structure of the support frame in the respiratory mask shown;

[0061] Fig.21 for Figure 6 A schematic diagram of the structure of the left fixing frame in the breathing mask shown;

[0062] Fig. 22 for Figure 6 A schematic diagram of the structure of the right fixing frame in the breathing mask shown. DETAILED DESCRIPTION

[0063] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0064] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, unless otherwise specified, "multiple" means two or more; it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or a connection between the two elements.

[0065] See also Figures 1 to 22 A breathing mask comprises a supporting frame 1, a curved pipe 2, a mounting seat 3, a silicone pad 4, an exhaust ring 5, a left fixing frame 6 and a right fixing frame 7.

[0066] See also Figure 5 The first end 23 of the bent pipe 2 is inserted and fixed in the support frame 1. Specifically, a first annular protrusion 11 is formed on the support frame 1, and the first end 23 of the bent pipe 2 is inserted and fixed in the first annular protrusion 11. The bent pipe 2 is used to connect the ventilation pipeline of the ventilator. After wearing a breathing mask, the ventilator can provide breathing support to the patient through the bent pipe 2.

[0067] See also Figure 5 The mounting seat 3 is mounted on the support frame 1, and a through hole 31 is formed on the mounting seat 3, and the first end 23 of the elbow 2 is inserted into the through hole 31; specifically: refer to Fig.13The mounting seat 3 includes an upper support portion 301, a left support portion 302, a right support portion 303 and a lower support portion 304, which are connected end to end in sequence to form a closed ring structure, and the upper support portion 301, the left support portion 302, the right support portion 303 and the lower support portion 304 are enclosed in the periphery of the through hole 31, and the outer contour of the upper support portion 301 is arranged at an obtuse angle to the outer contour of the left support portion 302, and the outer contour of the upper support portion 301 is arranged at an obtuse angle to the outer contour of the right support portion 303, so that the outer contour of the upper part of the mounting seat 3 is trapezoidal as a whole, and the mounting seat 3 provides support for the silicone pad 4.

[0068] See also Figure 4 , Figure 5 and Fig.14 , the silicone pad 4 is put on the mounting base 3, see Fig.10 The outer contour of the upper part of the end of the silicone pad 4 close to the mounting seat 3 is trapezoidal, and the shape of the outer contour of the end of the silicone pad 4 close to the mounting seat 3 is consistent with the outer edge of the upper support part 301, the outer edge of the left support part 302, the outer edge of the right support part 303, and the outer edge of the lower support part 304 ( Fig.13 The outer contour of the upper support portion 301, the outer contour of the left support portion 302, and the outer contour of the right support portion 303 are arranged in a manner that ensures that the outer contour of the upper portion of the silicone pad 4 is trapezoidal, ensuring that the silicone pad 4 will not be pressed on the patient's nose bridge; refer to Figures 10 to 12 , Fig.15 A circle of grooves 43 are formed on the inner wall of the end of the silicone pad 4 near the mounting seat 3, and the outer edges of the upper support portion 301, the left support portion 302, the right support portion 303, and the lower support portion 304 ( Fig.13 As shown in the figure, they are all inserted and accommodated in the card slot 43, so that the outer edge of the mounting base 3 (the outer edge of the upper support part 301, the outer edge of the left support part 302, the outer edge of the right support part 303, and the outer edge of the lower support part 304) can be snapped into the card slot 43 on the silicone pad 4 to support the upper part of the silicone pad 4, ensuring that the outer contour of the upper part of the silicone pad 4 is trapezoidal and not easy to deform, so that the space at the position of the patient's nose bridge is released.

[0069] See also Fig.13 The outer edges of the upper support portion 301, the left support portion 302, the right support portion 303, and the lower support portion 304 are all flat. The outer edge of the flat mounting base 3 can be easily snapped into the slot 43 on the silicone pad 4, and the silicone pad 4 can be easily installed on the mounting base 3.

[0070] See also Figure 3 , Figures 7 to 12A first supporting portion 41 and a second supporting portion 42 are formed on the inner wall of the silicone pad 4. The number of the second supporting portions 42 is two, and the two second supporting portions 42 are distributed on the opposite sides of the inner wall of the silicone pad 4. The positions and shapes of the two second supporting portions 42 are adapted to the outer contour of the nose. When the silicone pad 4 covers the patient's mouth and nose, the two second supporting portions 42 are respectively located at the outer sides of the patient's nose and maintain a certain distance from the outer sides of the patient's nose. The thickness of the silicone pad 4 at the positions of the two second supporting portions 42 is significantly thicker than that at other positions. In this way, after wearing (the silicone pad 4 covers the patient's mouth and nose), the position of the silicone pad 4 adapted to the outer side of the patient's nose is Neither of the two second support parts 42 will collapse under the action of the two second support parts 42, and the part of the silicone pad 4 that is adapted to the outside of the patient's nose will not collapse on the outside of the patient's nose, and the space at the outside of the patient's nose can be released. In addition, the first support part 41 is arranged on the inner wall of the port of the silicone pad 4 close to the mounting seat 3, and the first support part 41 and the second support part 42 are integrally connected. The thickness of the first support part 41 and the second support part 42 are equivalent. The first support part 41 can ensure the overall strength of the silicone pad 4 at the port close to the mounting seat 3, and further ensure that the part of the silicone pad 4 that is adapted to the outside of the patient's nose will not collapse under the action of the two second support parts 42.

[0071] See also Fig.17 A circle of limiting protrusions 22 is formed on the outer wall of the bent pipe 2 , and the limiting protrusions 22 can limit the installation position of the exhaust ring 5 on the bent pipe 2 .

[0072] See also Fig.17 A convex buckle 21 is formed on the outer wall of the bent pipe 2, one end of the convex buckle 21 is connected to the side of the limiting protrusion 22 and is integrally formed, and the other end of the convex buckle 21 is in an arc shape.

[0073] See also Figures 16 to 19 The exhaust ring 5 includes an inner ring wall 501, an outer ring wall 502 and an inclined wall 503. The end of the inner ring wall 501 is connected to the end of the outer ring wall 502 through the inclined wall 503. The end of the inner ring wall 501 that is not connected to the inclined wall 503 is flush with the end of the outer ring wall 502 that is not connected to the inclined wall 503. Exhaust holes 51 are formed on the inclined wall 503. In this embodiment, there are multiple exhaust holes 51, and the multiple exhaust holes 51 are evenly arranged on the inclined wall 503, that is, the multiple exhaust holes 51 are circumferentially arranged between the inner ring wall 501 and the outer ring wall 502. In this way, the carbon dioxide generated by breathing can be quickly and smoothly discharged through the circumferentially arranged exhaust holes 51.

[0074] See also Fig.18 , the exhaust hole 51 is located on the outer wall of the inclined wall 503 ( Fig.18 The port on the portion shown by the middle oblique wall 503 is open, which can effectively increase the discharge speed of carbon dioxide.

[0075] The exhaust ring 5 is sleeved on the elbow 2. Fig.18 The end of the inner ring wall 501 of the exhaust ring 5 away from the support frame 1 is formed with a step 5011, see Fig.16 and Fig.17 The inner ring wall 501 of the exhaust ring 5 is sleeved on the elbow 2, and the limiting protrusion 22 on the elbow 2 can be clamped in the step 5011 on the inner ring wall 501 of the exhaust ring 5 ( Figure 2 The inner ring wall 501 of the exhaust ring 5 is formed with a notch 52, the position of the notch 52 is adapted to the convex buckle 21 on the elbow 2, and the outer ring wall 502 of the exhaust ring 5 abuts against the inner wall of the cavity of the support frame 1 accommodating the exhaust ring 5, see Figure 2 The exhaust ring 5 is located between the outer wall of the elbow 2 and the inner wall of the cavity of the support frame 1 that accommodates the exhaust ring 5. When the end of the exhaust ring 5 abuts against the limiting protrusion 22, that is, the limiting protrusion 22 is clamped in the step 5011 on the exhaust ring 5 ( Figure 2 In the state shown in the figure, the convex buckle 21 on the bent pipe 2 is completely engaged in the notch 52 on the exhaust ring 5. In this way, when installing the exhaust ring 5, as long as the end of the exhaust ring 5 abuts against the limiting protrusion 22, it can be ensured that the convex buckle 21 is engaged in the notch 52, and the installation of the exhaust ring 5 is very convenient; the notch 52 on the inner ring wall 501 is used to engage with the convex buckle 21 on the bent pipe 2, and the outer ring wall 502 is used to abut against the inner wall of the cavity of the support frame 1 that accommodates the exhaust ring 5, and the inclined wall 503 provides a design area for the exhaust hole 51.

[0076] See also Fig.17 and Fig.18The convex buckle 21 on the elbow 2 is snapped into the notch 52, and the notch 52 is flared, that is, the width of the opening of the notch 52 is greater than the width of the root of the notch 52, and the shape of the notch 52 is adapted to the shape of the convex buckle 21 on the elbow 2. When the exhaust ring 5 is installed, the convex buckle 21 with an arcuate end can make the convex buckle 21 quickly snapped into the notch 52. The convex buckle 21 with an arcuate end can play a certain guiding role, so that the convex buckle 21 can be quickly snapped into the notch 52 on the exhaust ring 5, and the flared notch 52 can also make the convex buckle 21 quickly snapped into the notch 52. In addition, the shape of the notch 52 is adapted to the shape of the convex buckle 21 on the elbow 2, so that the convex buckle 21 can be snapped into the notch 52. After being connected in the notch 52, the exhaust ring 5 and the bent pipe 2 will not easily rotate relative to each other in the circumferential direction; when the exhaust ring 5 needs to be removed, the exhaust ring 5 is pulled out from the inner wall of the cavity of the support frame 1 accommodating the exhaust ring 5, and then the exhaust ring 5 is pulled outward from the bent pipe 2, and the convex buckle 21 on the bent pipe 2 withdraws from the notch 52 on the exhaust ring 5. At this time, the exhaust ring 5 can be removed from the bent pipe 2. When the exhaust ring 5 needs to be installed, the exhaust ring 5 is sleeved on the bent pipe 2, ensuring that the notch 52 on the exhaust ring 5 is aligned with the convex buckle 21 on the bent pipe 2, and the end of the exhaust ring 5 is abutted against the limiting protrusion 22, and then the exhaust ring 5 is pressed between the outer wall of the bent pipe 2 and the inner wall of the cavity of the support frame 1 accommodating the exhaust ring 5 ( Figure 2 status shown).

[0077] See also Figure 4 , Fig.13 and Fig.14 A second annular protrusion 32 is formed on the mounting seat 3 and enclosed in the periphery of the through hole 31. The second annular protrusion 32 is sleeved on the first annular protrusion 11 on the support frame 1, that is, the first annular protrusion 11 is inserted into the through hole 31, and a buckle 311 is formed on the inner wall of the through hole 31. A groove 111 adapted to the buckle 311 is formed on the outer wall of the first annular protrusion 11. The buckle 311 is snapped into the groove 111. The existence of the first annular protrusion 11 can facilitate the installation and fixation of the mounting seat 3 on the support frame 1. The mounting seat 3 and the support frame 1 can be firmly installed together through the nested cooperation of the second annular protrusion 32 and the first annular protrusion 11 and the cooperation of the buckle 311 and the groove 111, and are not easy to loosen.

[0078] In this embodiment, there are two buckles 311, which are arranged opposite to each other on the inner wall of the through hole 31. Correspondingly, there are two grooves 111, which are arranged opposite to each other on the outer wall of the first annular protrusion 11. When the second annular protrusion 32 is sleeved on the first annular protrusion 11, the two buckles 311 are respectively engaged in the two grooves 111, ensuring that the two are firmly installed together. In other embodiments, the number of buckles 311 and grooves 111 can be adjusted as needed to ensure that one buckle 311 is engaged with one groove 111.

[0079] See also Figures 1 to 6 The left fixing frame 6 is bent, and the bent portion of the left fixing frame 6 is installed on one side of the supporting frame 1 ( Figure 1 The left side of the middle support frame 1), the left fixing frame 6 is provided with a left connecting buckle, and the left fixing frame 6 is detachably connected to the support frame 1; specifically, refer to Figures 1 to 6 , Fig.21 The left fixing frame 6 includes a left bending portion 601 and a left fixing portion 602, and the left connecting buckle includes a first left connecting buckle 62 and a second left connecting buckle 63. The first left connecting buckle 62 is arranged on one end of the left bending portion 601 and is integrally formed with the left bending portion 601. One end of the left fixing portion 602 is fixed to the other end of the left bending portion 601. The second left connecting buckle 63 is arranged on the other end of the left fixing portion 602 and is integrally formed with the left fixing portion 602. One side of the supporting frame 1 ( Figure 1 A first plug-in buckle 12 is formed on the left side of the middle support frame 1, and a first plug-in groove 61 adapted to the first plug-in buckle 12 is formed on the bending position of the left fixing frame 6, that is, the left bending portion 601. The first plug-in buckle 12 on the support frame 1 is plugged into the first plug-in groove 61 on the left bending portion 601. The left fixing frame 6 and the support frame 1 are detachably connected through the cooperation of the first plug-in buckle 12 and the first plug-in groove 61. When installing the left fixing frame 6, just plug the first plug-in buckle 12 on the support frame 1 into the first plug-in groove 61 on the left fixing frame 6. When disassembling the left fixing frame 6, just pull the left fixing frame 6 off the support frame 1. The installation and disassembly of the left fixing frame 6 are very convenient.

[0080] See also Fig. 20 The free end 122 of the first plug buckle 12 on the support frame 1 is in a slope shape, and a first through hole 121 is formed on the first plug buckle 12. Fig.21 A first protrusion 611 is formed on the wider side wall of the first plug-in slot 61 on the left bent portion 601, and a gap is left between the free end of the first protrusion 611 and the opposite side wall of the side wall where the first protrusion 611 is set to facilitate the insertion of the free end 122 of the first plug-in buckle 12, see Fig. 20 and Fig.21 When the first plug-in buckle 12 is plugged into the first plug-in slot 61, the first protrusion 611 in the first plug-in slot 61 is accommodated in the first through hole 121; the first plug-in buckle 12 with a sloped free end can be easily inserted into the first plug-in slot 61, and during the plug-in process, the first protrusion 611 in the first plug-in slot 61 can easily slide into the first through hole 121 on the first plug-in buckle 12, ensuring that the first plug-in buckle 12 and the first plug-in slot 61 are firmly plugged and not easy to loosen.

[0081] In this embodiment, the number of the first through holes 121 on the first plug buckle 12 is two, and correspondingly, the number of the first protrusions 611 on the side wall of the first plug slot 61 is also two. When the first plug buckle 12 is plugged into the first plug slot 61, the two first protrusions 611 in the first plug slot 61 are respectively accommodated in the two first through holes 121 on the first plug buckle 12, thereby ensuring that the first plug buckle 12 and the first plug slot 61 are firmly plugged and not easy to loosen. In other embodiments, according to installation requirements, the number of the first through holes 121 on the first plug buckle 12 and the number of the first protrusions 611 on the side wall of the first plug slot 61 can be adjusted to ensure that the first protrusions 611 can be accommodated in the first through holes 121, and the number and position of the two can be adapted.

[0082] In this embodiment, there are two first plug buckles 12 and two first plug slots 61, and the positions of the two are adapted, and the two first plug buckles 12 can be respectively plugged into the two first plug slots 61. In other embodiments, the number of first plug buckles 12 and the number of first plug slots 61 can be adjusted to ensure that the two are the same in number and adapted in position.

[0083] In this embodiment, the left bending portion 601 is made of silicone material, so that the two first plug-in buckles 12 on one side of the support frame 1 can be easily inserted into the two first plug-in grooves 61 on the left bending portion 601, and the left bending portion 601 made of silicone facilitates the adjustment of the angle between the left fixing frame 6 and the support frame 1 to adapt to denominations of different widths.

[0084] The left fixing frame 6 is provided with a first bendable adjustment portion 64. Figure 1 , Figure 6 and Fig.21 The first bendable adjustable portion 64 is arranged on the left bending portion 601 of the left fixing frame 6. A section of the left bending portion 601 close to the end portion connected to the left fixing portion 602 is flat to form the first bendable adjustable portion 64. The left bending portion 601 can be bent relatively freely at the position of the first bendable adjustable portion 64. In this way, the left fixing portion 602 of the left fixing frame 6 can adaptively adjust the angle between the left fixing portion 602 and the supporting frame 1 through the first bendable adjustable portion 64 to adapt to denominations of different widths.

[0085] The right fixing frame 7 has the same structure as the left fixing frame 6 and is symmetrically arranged with respect to the supporting frame 1. Figures 1 to 6 The right fixing frame 7 is bent, and the bent portion of the right fixing frame 7 is installed on the other side of the supporting frame 1 ( Figure 1 The right side of the middle support frame 1), the right fixing frame 7 is provided with a right connecting buckle, and the right fixing frame 7 is detachably connected to the support frame 1; specifically, refer to Figures 1 to 6 , Fig. 22The right fixing frame 7 includes a right bending portion 701 and a right fixing portion 702, and the right connecting buckle includes a first right connecting buckle 72 and a second right connecting buckle 73. The first right connecting buckle 72 is arranged on one end of the right bending portion 701 and is integrally formed with the right bending portion 701. One end of the right fixing portion 702 is fixed to the other end of the right bending portion 701. The second right connecting buckle 73 is arranged on the other end of the right fixing portion 702 and is integrally formed with the right fixing portion 702. The other side of the support frame 1 ( Figure 1 A second plug-in buckle 13 is formed on the right side of the middle support frame 1, and a second plug-in groove 71 adapted to the second plug-in buckle 13 is formed on the bending position of the right fixing frame 7, that is, the right bending portion 701. The second plug-in buckle 13 on the support frame 1 is plugged into the second plug-in groove 71 on the right bending portion 701. The right fixing frame 7 and the support frame 1 are detachably connected through the cooperation of the second plug-in buckle 13 and the second plug-in groove 71. When installing the right fixing frame 7, just plug the second plug-in buckle 13 on the support frame 1 into the second plug-in groove 71 on the right fixing frame 7. When disassembling the right fixing frame 7, just pull the right fixing frame 7 off the support frame 1. The installation and disassembly of the right fixing frame 7 are very convenient.

[0086] See also Fig. 20 The free end 132 of the second plug buckle 13 on the support frame 1 is sloped, and a second through hole 131 is formed on the second plug buckle 13. Fig. 22 A second protrusion 711 is formed on the wider side wall of the second plug-in slot 71 on the right bending portion 701, and a gap is left between the free end of the second protrusion 711 and the side wall opposite to the side wall where the second protrusion 711 is set to facilitate the insertion of the free end 132 of the second plug-in buckle 13, see Fig. 20 and Fig. 22 When the second plug-in buckle 13 is plugged into the second plug-in slot 71, the second protrusion 711 in the second plug-in slot 71 is accommodated in the second through hole 131; the second plug-in buckle 13 with a sloped free end can be easily inserted into the second plug-in slot 71, and during the plug-in process, the second protrusion 711 in the second plug-in slot 71 can easily slide into the second through hole 131 on the second plug-in buckle 13, ensuring that the second plug-in buckle 13 and the second plug-in slot 71 are firmly plugged and not easy to loosen.

[0087] In this embodiment, the number of the second through holes 131 on the second plug buckle 13 is two, and correspondingly, the number of the second protrusions 711 on the side wall of the second plug slot 71 is also two. When the second plug buckle 13 is plugged into the second plug slot 71, the two second protrusions 711 in the second plug slot 71 are respectively accommodated in the two second through holes 131 on the second plug buckle 13, thereby ensuring that the second plug buckle 13 and the second plug slot 71 are firmly plugged and not easy to loosen. In other embodiments, according to installation requirements, the number of the second through holes 131 on the second plug buckle 13 and the number of the second protrusions 711 on the side wall of the second plug slot 71 can be adjusted to ensure that the second protrusions 711 can be accommodated in the second through holes 131, and the number and position of the two can be adapted.

[0088] In this embodiment, the number of the second plug buckles 13 is two, and the number of the second plug slots 71 is two, and the positions of the two are adapted, and the two second plug buckles 13 can be respectively plugged into the two second plug slots 71. In other embodiments, the number of the second plug buckles 13 and the number of the second plug slots 71 can be adjusted to ensure that the two are the same in number and adapted in position.

[0089] In this embodiment, the right bending portion 701 is made of silicone material, so that the two second plug-in buckles 13 on one side of the support frame 1 can be easily inserted into the two second plug-in grooves 71 on the right bending portion 701, and the right bending portion 701 made of silicone is convenient for adjusting the angle between the right fixing frame 7 and the support frame 1 to adapt to denominations of different widths.

[0090] The right fixing frame 7 is provided with a second bendable adjustment portion 74. Figure 1 , Figure 6 and Fig. 22 The second bendable adjustable portion 74 is arranged on the right bending portion 701 of the right fixing frame 7. A section of the right bending portion 701 close to the end portion connected to the right fixing portion 702 is flat to form the second bendable adjustable portion 74. The right bending portion 701 can be bent relatively freely at the position of the second bendable adjustable portion 74. In this way, the right fixing portion 702 of the right fixing frame 7 can adaptively adjust the angle between the right fixing portion 702 and the supporting frame 1 through the second bendable adjustable portion 74 to adapt to denominations of different widths.

[0091] See also Figures 1 to 22In the breathing mask of the present invention, the curved pipe 2 is connected to the ventilation pipeline of the respirator, and the respirator can provide breathing support to the patient through the curved pipe 2, and the silicone pad 4 is covered on the patient's mouth and nose. Since the outer contour of the upper part of the silicone pad 4 is trapezoidal and the outer contour of the upper part of the mounting seat 3 used to carry the silicone pad 4 is also trapezoidal, in this way, after wearing, the space at the position of the patient's nose bridge can be released, and the silicone pad 4 will not be pressed on the patient's nose bridge, and the nose bridge will not feel uncomfortable after wearing for a long time. In addition, since two second supporting parts 42 adapted to the outer contour of the nose are provided on the inner wall of the silicone pad 4, after wearing, the position of the silicone pad 4 adapted to the outer side of the patient's nose is in two The second support portion 42 will not collapse under the action of the second support portion 42. At the same time, the first support portion 41 on the inner wall of the silicone pad 4 can ensure the overall strength of the silicone pad 4 near the port of the mounting seat 3, and ensure that the portion of the silicone pad 4 that is adapted to the outside of the patient's nose will not collapse under the action of the two second support portions 42. In this way, after wearing, the portion of the silicone pad 4 that is adapted to the outside of the patient's nose will not collapse on the outside of the patient's nose, and the space at the outside of the patient's nose can also be released. There will be no discomfort on the outside of the nose after wearing for a long time. Moreover, even if the patient's nose bridge is high, the design of the upper outer contour of the silicone pad 4, the upper outer contour design of the mounting seat 3 that supports the silicone pad 4, and the silicone The design of the two second supporting parts 42 on the inner wall of the rubber pad 4 is also sufficient to ensure that the silicone pad 4 will not be pressed on the bridge of the nose and the part of the silicone pad 4 that is adapted to the outside of the patient's nose will not be pressed on the outside of the nose, which can bring a comfortable wearing experience to the patient; in addition, the exhaust hole 51 is independently arranged on the exhaust ring 5, and the exhaust ring 5 is installed between the outer wall of the curved pipe 2 and the inner wall of the cavity of the support frame 1 that accommodates the exhaust ring 5. When the exhaust hole 51 needs to be cleaned, the exhaust ring 5 is pulled out from the inner wall of the cavity of the support frame 1 that accommodates the exhaust ring 5, and then the exhaust ring 5 is pulled outward from the curved pipe 2, and the convex buckle 21 on the curved pipe 2 is withdrawn from the notch 52 on the exhaust ring 5, and the exhaust ring 5 can be removed from the curved pipe 2 at this time. After cleaning, the exhaust ring 5 is put on the elbow 2, ensuring that the notch 52 on the exhaust ring 5 is aligned with the convex buckle 21 on the elbow 2, and the end of the exhaust ring 5 is abutted against the limiting protrusion 22, that is, the limiting protrusion 22 is clamped in the step 5011 on the exhaust ring 5, and then the exhaust ring 5 is pressed between the outer wall of the elbow 2 and the inner wall of the cavity of the support frame 1 accommodating the exhaust ring 5. The exhaust ring 5 is very convenient to install and disassemble, so that the exhaust hole 51 on the exhaust ring 5 can be cleaned independently and quickly, which brings great convenience to the user. After wearing the breathing mask of the present invention, the carbon dioxide generated by the patient's breathing can be discharged through the exhaust hole 51 on the exhaust ring 5;Moreover, the left fixing frame 6 is connected to the first right connecting buckle 72 of the right fixing frame 7 through the first left connecting buckle 62 and a strap, and the left fixing frame 6 is connected to the second right connecting buckle 73 of the right fixing frame 7 through the second left connecting buckle 63 and another strap. After the silicone pad 4 covers the mouth and nose, the left fixing frame 6 is located on the left side of the head facing the patient's face direction (the right side of the head from the wearer's perspective), and the right fixing frame 7 is located on the right side of the head facing the patient's face direction (the left side of the head from the wearer's perspective). The straps between the left fixing frame 6 and the right fixing frame 7 are put on the head (both sides and the back of the head) and fixed. During breathing, the patient's forehead, nose and eyebrows are not blocked by the fixing frame, and there will be no discomfort caused by blocking after wearing for a long time. Moreover, the left fixing frame 6 and the right fixing frame The fixed frame 7 is detachably connected to the support frame 1, and the left fixed frame 6 and the right fixed frame 7 can be removed independently. In this way, when the left fixed frame 6, the right fixed frame 7 or one of the components in the support frame 1 is damaged, it is only necessary to remove the damaged component separately for replacement, and there is no need to replace the entire component, which can reduce costs. Moreover, during transportation and when not in use, the left fixed frame 6 and the right fixed frame 7 can be removed from the support frame 1 for convenient transportation and storage. In addition, the left fixed portion 602 can adaptively adjust the angle between the left fixed portion 602 and the support frame 1 through the first bendable adjustment portion 64, and the right fixed portion 702 can adaptively adjust the angle between the right fixed portion 702 and the support frame 1 through the second bendable adjustment portion 74, so as to adapt to denominations of different widths and ensure wearing comfort. ;

[0092] The above are only some embodiments of the present invention, which are intended to illustrate the technical means of the present invention, but not to limit the technical scope of the present invention. Those skilled in the art can make obvious improvements to the present invention in combination with existing common knowledge, which all fall within the protection scope of the present invention.

Claims

1. A breathing mask, characterized in that: include: Support frame; An elbow for connecting the ventilation pipeline of the ventilator, wherein the first end of the elbow is inserted and fixed in the support frame; A mounting seat, wherein a through hole is provided on the mounting seat, the outer contour of the upper portion of the mounting seat is in a trapezoidal shape, the mounting seat is arranged on the support frame and the first end of the bent pipe is inserted into the through hole; A silicone pad, wherein the silicone pad is sleeved on the mounting seat, the outer contour of the upper part of the silicone pad is trapezoidal, the inner wall of the silicone pad is provided with a first support portion and a second support portion adapted to the outer contour of the nose, the number of the second support portions is two, the two second support portions are distributed on opposite sides of the inner wall of the silicone pad, the first support portion is ringed on the inner wall of the silicone pad close to the port of the mounting seat, and the first support portion is integrally connected with the second support portion; and An exhaust ring is provided with an exhaust hole, and the exhaust ring is arranged between the outer wall of the bent pipe and the inner wall of the support frame.

2. The breathing mask according to claim 1, characterized in that The mounting seat comprises an upper support portion, a left support portion, a right support portion and a lower support portion which are sequentially connected end to end and enclosed in the periphery of the perforation, wherein the outer contour of the upper support portion is arranged at an obtuse angle to the outer contour of the left support portion, and the outer contour of the upper support portion is arranged at an obtuse angle to the outer contour of the right support portion. A circle of grooves is provided on the inner wall of the end of the silicone pad close to the mounting seat, and the outer edges of the upper support part, the left support part, the right support part and the lower support part are all accommodated in the grooves.

3. The breathing mask according to claim 1, characterized in that The outer wall of the bent pipe is provided with a convex buckle, the inner wall of the exhaust ring is provided with a notch, the exhaust ring is sleeved on the bent pipe, and the convex buckle is clamped in the notch.

4. The breathing mask according to claim 3, characterized in that The exhaust ring includes an inner ring wall, an outer ring wall and an inclined wall. The end of the inner ring wall is connected to the end of the outer ring wall through the inclined wall. There are multiple exhaust holes, and the multiple exhaust holes are evenly arranged on the inclined wall. The notch is arranged on the inner ring wall. The inner ring wall is sleeved on the bent pipe, and the outer ring wall abuts against the inner wall of the support frame.

5. The breathing mask according to claim 3, characterized in that A circle of limiting protrusions is provided on the outer wall of the curved pipe. One end of the convex buckle is arranged on the limiting protrusion, and the other end of the convex buckle is in an arc shape. The shape of the notch is adapted to the shape of the convex buckle, and the notch is in an expanded shape. When the end of the exhaust ring abuts against the limiting protrusion, the convex buckle is clamped in the notch.

6. The breathing mask according to claim 1, characterized in that The support frame is provided with a first annular protrusion, the inner wall of the through hole is provided with a buckle, the outer wall of the first annular protrusion is provided with a groove adapted to the buckle, the first end of the bent pipe is inserted and fixed in the first annular protrusion, the first annular protrusion is inserted in the through hole, and the buckle is clamped in the groove.

7. The breathing mask according to claim 6, characterized in that The mounting seat is provided with a second annular protrusion surrounding the periphery of the through hole, and the second annular protrusion is sleeved on the first annular protrusion.

8. The breathing mask according to claim 1, characterized in that It also includes a bent left fixing frame and a bent right fixing frame, At least one first plug buckle is provided on one side of the support frame, at least one first plug slot is provided on the bending position of the left fixing frame, the first plug buckle is plugged into the first plug slot, the free end of the first plug buckle is sloped, at least one first through hole is provided on the first plug buckle, and at least one first protrusion is provided on the side wall of the first plug slot. When the first plug buckle is plugged into the first plug slot, the first protrusion is accommodated in the first through hole. At least one second plug buckle is provided on the other side of the support frame, at least one second plug slot is provided on the bending position of the right fixing frame, the second plug buckle is plugged into the second plug slot, the free end of the second plug buckle is sloped, at least one second through hole is provided on the second plug buckle, and at least one second protrusion is provided on the side wall of the second plug slot. When the second plug buckle is plugged into the second plug slot, the second protrusion is accommodated in the second through hole. The left fixing frame is provided with a left connecting buckle, and the right fixing frame is provided with a right connecting buckle.

9. The breathing mask according to claim 8, characterized in that The left fixing frame includes a left bending portion and a left fixing portion, the first plug-in slot is arranged on the left bending portion, the left connecting buckle includes a first left connecting buckle and a second left connecting buckle, the first left connecting buckle is arranged on one end of the left bending portion, one end of the left fixing portion is arranged on the other end of the left bending portion, and the second left connecting buckle is arranged on the other end of the left fixing portion. The right fixing frame includes a right bending portion and a right fixing portion, the second plug-in slot is arranged on the right bending portion, the right connecting buckle includes a first right connecting buckle and a second right connecting buckle, the first right connecting buckle is arranged on one end of the right bending portion, one end of the right fixing portion is arranged on the other end of the right bending portion, and the second right connecting buckle is arranged on the other end of the right fixing portion.

10. The breathing mask according to claim 8, characterized in that The left fixing frame is provided with a first bendable adjusting portion, and the right fixing frame is provided with a second bendable adjusting portion.

Images