Breathing mask
By setting the connection channel in the breathing mask, the pad connector is directly connected to the pipeline, which solves the problem of complex and difficult to clean the existing breathing mask structure. sex.
Patent Information
- Application Number
- CN202323659088.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The existing respiratory masks have a relatively complex structure, are difficult to form and are not conducive to cleaning. In particular, the design of hub structure and sealing lip increases the difficulty of process and cleaning.
By setting the connection channel, the pad connection head can penetrate the connection channel and directly connect to the pipeline, or the connection channel itself can be connected to the pipeline, and the design of the hub structure and seal lip can be canceled.
Simplify the structure, improve the formability of process, and make the breathing mask easier to clean.
Smart Images

Figure CN222399856U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of positive pressure ventilation, in particular to a breathing mask. Background Art
[0002] A respiratory mask is generally worn on the face of a patient to provide ventilation gas to the patient. The respiratory mask generally includes a cushion in contact with the patient's face, a frame for fixing the respiratory mask on the patient's face, and a pipe for conveying gas. The cushion can be connected to the orifice of the pipe so that gas can be conveyed. In order to maximize the area of the orifice within the available area between other components in the pipe, the wall of the orifice is extended outward from the patient-facing side to form a hub structure, and a sealing lip that cooperates with it needs to be provided on the cushion, which results in a more complicated structure, is not easy to form in terms of process, and is not conducive to cleaning. Utility Model Content
[0003] The utility model provides a breathing mask, which is used to solve at least one of the above technical problems.
[0004] The utility model provides a breathing mask, comprising a frame assembly and a cushion assembly arranged inside the frame assembly, wherein a side of the cushion assembly away from the frame assembly is used to contact with the patient's face, and a gas chamber is formed inside the cushion assembly;
[0005] The frame assembly includes a connecting channel, and the gasket assembly includes a gasket connector, which passes through the connecting channel to be connected to a pipeline; or the gasket connector is arranged in the connecting channel so that the connecting channel is connected to the pipeline.
[0006] In one embodiment, the cushion assembly is provided with a first connecting element and a first element to be connected, respectively located on both sides of its axis, and the frame assembly is provided with a second connecting element and a second element to be connected, respectively located on both sides of its axis, and the first connecting element and the second connecting element are respectively located on different sides of the axis of the respiratory mask; wherein the first connecting element is connected to the second element to be connected via magnetic force; the first element to be connected is connected to the second connecting element via magnetic force, and the polarity of the surface of the first connecting element facing the frame assembly is the same as the polarity of the surface of the second connecting element facing the cushion assembly.
[0007] In one embodiment, the first connecting element, the second connecting element, the first element to be connected and the second element to be connected are all magnetic members.
[0008] Among them, the polarity of the surface of the first connecting element facing the frame assembly is different from the polarity of the surface of the second connecting element facing the cushion assembly, and the polarity of the surface of the second connecting element facing the cushion assembly is different from the polarity of the surface of the first connecting element facing the frame assembly.
[0009] In one embodiment, the first connecting element and the second connecting element are both magnetic members, and the first element to be connected and the second element to be connected are both metals that can be attracted by the magnetic members.
[0010] In one embodiment, the first connecting element, the second connecting element and the second element to be connected are all magnetic members, and the first element to be connected is a metal that can be attracted by the magnetic member;
[0011] The polarity of the surface of the first connecting element facing the frame assembly is different from the polarity of the surface of the second to-be-connected element facing the cushion assembly.
[0012] In one embodiment, the first connecting element, the first element to be connected and the second connecting element are all magnetic members, and the second element to be connected is a metal that can be attracted by the magnetic member;
[0013] The polarity of the surface of the second connecting element facing the cushion assembly is different from the polarity of the surface of the first element to be connected facing the frame assembly.
[0014] In one embodiment, the cushion assembly includes a cushion body and a nose plug arranged on a side of the cushion body away from the frame assembly, and the cushion connector is arranged on a side of the cushion body close to the frame assembly;
[0015] Wherein, the first connecting element and the first element to be connected are respectively located on two sides of the gasket connector.
[0016] In one embodiment, the frame assembly includes a frame body and an extension arm, wherein the extension arm extends outward from both ends of the frame body.
[0017] The connecting channel is a positioning hole provided on the frame body, and the second connecting element and the second element to be connected are respectively located on both sides of the positioning hole.
[0018] In one embodiment, it further comprises a pipeline assembly disposed on a side of the frame assembly away from the cushion assembly, the pipeline assembly comprising a pipeline connector and a hose connected to the pipeline connector, one end of the hose being used to be connected to a ventilation gas source;
[0019] wherein the gasket connector is disposed in the positioning hole, and the frame assembly is connected to the pipe connector; or
[0020] The gasket connector is connected to the pipeline connector after passing through the positioning hole.
[0021] In one embodiment, the pipe connector is provided with an exhaust hole, and the exhaust hole is located below the position where the pipe connector is connected to the frame assembly or the cushion assembly.
[0022] In one embodiment, the extension arm is further provided with a headband connecting hole for connecting a headband.
[0023] Compared with the prior art, the advantage of the present invention is that, by setting a connecting channel, the gasket connector can pass through the connecting channel and be directly connected to the pipeline, or the connecting channel itself can be connected to the pipeline. Therefore, there is no need to set the hub structure and sealing lip in the prior art, which makes the structure simpler, the process feasibility is higher, and it is also convenient for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.
[0025] Figure 1 It is a three-dimensional structural schematic diagram of the breathing mask in Example 1 of the utility model;
[0026] Figure 2 yes Figure 1 An exploded view of the respiratory mask shown;
[0027] Figure 3 yes Figure 1 a cross-sectional view of the respiratory mask shown;
[0028] Figure 4 yes Figure 1 a cross-sectional view of the illustrated liner assembly;
[0029] Figure 5 yes Figure 1 a cutaway view of the frame assembly shown;
[0030] Figure 6 yes Figure 1 a cross-sectional view of the piping assembly shown;
[0031] Figure 7 yes Figure 1 A schematic diagram of the three-dimensional structure of the pipeline assembly shown;
[0032] Figure 8 , Fig. 9 , Fig.10 and Fig.11 They are Figure 1Cross-sectional views of various embodiments of the connection between the liner assembly and the frame assembly;
[0033] Fig.12 It is a cross-sectional view of the breathing mask in Example 2 of the present utility model.
[0034] Reference numerals:
[0035] 11. Gasket assembly; 12. Frame assembly; 13. Pipeline assembly;
[0036] 111, cushion body; 112, nasal plug; 113, cushion connector; 114, first connecting element; 115, first element to be connected;
[0037] 121, frame body; 122, extension arm; 123, headband connection hole; 124, second connection element; 125, second element to be connected; 126, positioning hole;
[0038] 131. Pipe connector; 132. Hose; 133. Air inlet connector; 134. Exhaust hole. DETAILED DESCRIPTION
[0039] The utility model will be further described below in connection with the accompanying drawings.
[0040] Example 1
[0041] like Figure 1-Figure 11 As shown, the utility model provides a breathing mask, in particular a nasal mask, which is used to be worn on the patient's face, so the breathing mask is generally arranged about a symmetry axis L (such as Figure 3 The symmetrical structure is shown.
[0042] The breathing mask of the utility model comprises a frame assembly 12 and a Figure 1 As shown, that is, the side close to the patient's face) of the cushion component 11, as Figure 4 As shown, the liner assembly 11 is provided with two Figure 4 As shown in FIG. 1 , the first connecting element 114 and the first to-be-connected element 115 on both sides. Figure 5 As shown, the frame assembly 12 is provided with two parts respectively located on its axis L2 (such as Figure 5 As shown in FIG. 1 , the second connecting element 124 and the second to-be-connected element 125 on both sides. Figure 3 As shown, the first connecting element 114 and the second connecting element 124 are respectively located on the axis L of the breathing mask (as shown in FIG. Figure 3 different sides of the ).
[0043] Among them, the first connecting element 114 is connected to the second connecting element 125 by magnetic force, the first connecting element 115 is connected to the second connecting element 124 by magnetic force, and the polarity of the surface of the first connecting element 114 facing the frame assembly 12 is the same as the polarity of the surface of the second connecting element 124 facing the cushion assembly 11.
[0044] In some preferred embodiments, Figure 8 As shown, the first connecting element 114, the second connecting element 124, the first to-be-connected element 115, and the second to-be-connected element 125 are all magnetic members, and the magnetic members may be magnets, etc. The polarity of the surface of the first connecting element 114 facing the frame assembly 12 is different from the polarity of the surface of the second to-be-connected element 125 facing the cushion assembly 11, and the polarity of the surface of the second connecting element 124 facing the cushion assembly 11 is different from the polarity of the surface of the first to-be-connected element 115 facing the frame assembly 12.
[0045] like Figure 8 As shown, the surface of the first connecting element 114 facing the frame component 12 is the N pole, and the other opposite surface is the S pole, and the surface of the second connecting element 125 to be connected, which is magnetically connected to the first connecting element 114, facing the cushion component 11 (i.e., the surface close to the first connecting element 114) is the S pole, and the other opposite surface is the N pole; therefore, the first connecting element 114 and the second connecting element 125 to be connected can be attracted to each other and connected. Conversely, the surface of the first connecting element 115 to be connected, which is facing the frame component 12, is the S pole, and the other opposite surface is the N pole, and the surface of the second connecting element 124 to be connected, which is magnetically connected to the first connecting element 115, facing the cushion component 11 (i.e., the surface close to the first connecting element 115) is the N pole, and the other opposite surface is the S pole; therefore, the first connecting element 115 and the second connecting element 124 can be attracted to each other and connected.
[0046] It can be understood that, since the surface of the first connecting element 114 facing the frame assembly 12 is the N pole, and the surface of the second connecting element 124 facing the pad assembly 11 is also the N pole, when the pad assembly 11 is connected to the frame assembly 12, if the first connecting element 114 is mistakenly aligned with the second connecting element 124, the first connecting element 114 cannot be connected to the second connecting element 124 due to like charges repelling each other. Similarly, the first to-be-connected element 115 cannot be connected to the second to-be-connected element 125. Therefore, when the pad assembly 11 is connected to the frame assembly 12, only when the first connecting element 114 is aligned with the second to-be-connected element 125, and the first to-be-connected element 115 is aligned with the second connecting element 124, can they be connected due to opposite charges attracting each other, thereby ensuring the uniqueness of the joining orientation of the pad assembly 11 and the frame assembly 12.
[0047] Therefore, the first connecting element 114 and the second element to be connected 125 as well as the first element to be connected 115 and the second connecting element 124 are both magnetic parts, which can be automatically aligned and assembled when the cushion assembly 11 and the frame assembly 12 are connected.
[0048] In some optional embodiments, such as Fig. 9 As shown, the first connecting element 114 and the second connecting element 124 are both magnetic members, and the first to-be-connected element 115 and the second to-be-connected element 125 are both metals that can be attracted by magnetic members, such as steel, iron, etc.
[0049] like Fig. 9 As shown, the surface of the first connecting element 114 facing the frame assembly 12 is the N pole, and the other opposite surface is the S pole, which can attract the metal second connecting element 125. The surface of the second connecting element 124 facing the frame assembly 12 is the N pole, which can attract the metal first connecting element 115.
[0050] It can be understood that since the surface of the first connecting element 114 facing the frame assembly 12 is the N pole, and the surface of the second connecting element 124 facing the pad assembly 11 is also the N pole, when the pad assembly 11 is connected to the frame assembly 12, if the first connecting element 114 is incorrectly aligned with the second connecting element 124, then due to the repulsion of like charges, the first connecting element 114 cannot be connected to the second connecting element 124. Therefore, when the pad assembly 11 is connected to the frame assembly 12, only the first connecting element 114 and the metal second element to be connected 125 can be aligned, and the metal first element to be connected 115 and the second connecting element 124 can be aligned, so that they can be connected due to the attraction of opposite charges, thereby ensuring the uniqueness of the joining orientation of the pad assembly 11 and the frame assembly 12.
[0051] In some optional embodiments, such as Fig.10 As shown, the first connecting element 114, the second connecting element 124 and the second connecting element 125 are all magnetic members, and the first connecting element 115 is a metal that can be attracted by the magnetic member. The polarity of the surface of the first connecting element 114 facing the frame component 12 is different from the polarity of the surface of the second connecting element 125 facing the pad component 11.
[0052] like Fig.10As shown, the surface of the first connecting element 114 facing the frame component 12 is the N pole, and the other opposite surface is the S pole. The surface of the second connecting element 125 to be connected, which is magnetically connected to the first connecting element 114, facing the cushion component 11 (i.e., the surface close to the first connecting element 114) is the S pole, and the other opposite surface is the N pole; therefore, the first connecting element 114 and the second connecting element 125 can be attracted to each other and connected. The surface of the second connecting element 124 to be connected, which is magnetically connected to the first connecting element 115 made of metal, facing the cushion component 11 (i.e., the surface close to the first connecting element 115) is the N pole, and the other opposite surface is the S pole; therefore, the first connecting element 115 and the second connecting element 124 can be attracted to each other and connected.
[0053] It can be understood that since the surface of the first connecting element 114 facing the frame assembly 12 is the N pole, and the surface of the second connecting element 124 facing the pad assembly 11 is also the N pole, when the pad assembly 11 is connected to the frame assembly 12, if the first connecting element 114 is incorrectly aligned with the second connecting element 124, then due to the repulsion of like charges, the first connecting element 114 cannot be connected to the second connecting element 124; therefore, when the pad assembly 11 is connected to the frame assembly 12, only the first connecting element 114 and the second element to be connected 125 can be aligned, and the first element to be connected 115 and the second connecting element 124 can be aligned, so that they can be connected due to the attraction of opposite charges, thereby ensuring the uniqueness of the joining orientation of the pad assembly 11 and the frame assembly 12.
[0054] In some optional embodiments, such as Fig.11 As shown, the first connecting element 114, the first connecting element 115 and the second connecting element 124 are all magnetic members, and the second connecting element 125 is a metal that can be attracted by the magnetic member. The polarity of the surface of the second connecting element 124 facing the cushion component 11 is different from the polarity of the surface of the first connecting element 115 facing the frame component 12.
[0055] like Fig.11 As shown, the surface of the first connecting element 114 facing the frame assembly 12 is the N pole, and the other opposite surface is the S pole, so the first connecting element 114 can attract the metal second connecting element 125 to be attracted and connected to each other. The surface of the first connecting element 115 facing the frame assembly 12 is the S pole, and the other opposite surface is the N pole. The surface of the second connecting element 124 magnetically connected to the first connecting element 115 facing the pad assembly 11 (i.e., the surface close to the first connecting element 115) is the N pole, and the other opposite surface is the S pole; therefore, the first connecting element 115 and the second connecting element 124 can attract and connect to each other.
[0056] It can be understood that since the surface of the first connecting element 114 facing the frame assembly 12 is the N pole, and the surface of the second connecting element 124 facing the pad assembly 11 is also the N pole, when the pad assembly 11 is connected to the frame assembly 12, if the first connecting element 114 is incorrectly aligned with the second connecting element 124, then due to the repulsion of like charges, the first connecting element 114 cannot be connected to the second connecting element 124; therefore, when the pad assembly 11 is connected to the frame assembly 12, only the first connecting element 114 and the second element to be connected 125 can be aligned, and the first element to be connected 115 and the second connecting element 124 can be aligned, so that they can be connected due to the attraction of opposite charges, thereby ensuring the uniqueness of the joining orientation of the pad assembly 11 and the frame assembly 12.
[0057] In the above embodiment, the surface of the first connecting element 114 facing the frame assembly 12 may also be the S pole, and the other opposite surface thereof may be the N pole, and the second connecting element 125 may be adjusted accordingly, as long as the polarities of the surfaces relative to each other of the first connecting element 114 and the second connecting element 125 are different; similarly, the surface of the first connecting element 115 facing the frame assembly 12 may also be the N pole, and the other opposite surface thereof may be the S pole, and the second connecting element 124 may be adjusted accordingly, as long as the polarities of the surfaces relative to each other of the first connecting element 115 and the second connecting element 125 are different; and the polarities of the surfaces relative to each other of the first connecting element 114 and the second connecting element 124 are the same.
[0058] like Figure 3 and Figure 4 As shown, the cushion assembly 11 includes a cushion body 111, a nasal plug 112 disposed on the cushion body 111 away from the frame assembly 12, and a cushion connector 113 disposed on the cushion body 111 close to the frame assembly 12. The first connecting element 114 and the first to-be-connected element 115 are respectively located on both sides of the cushion connector 113. There can be two nasal plugs 112, which are respectively located at the two nostrils of the patient and contact the nostrils and the upper lip.
[0059] The cushion body 111 can be made of flexible material (such as silicone, rubber, TPE, TPU, etc.), rigid material (such as PC, ABS, etc.) or semi-rigid material (such as PP, plastic and soft rubber coating, etc.), and the cushion connector 113 is made of rigid material or semi-rigid material, and its rigidity can be greater than the rigidity of the cushion body 111 material, and is used to support the cushion body 111 and better form a seal between the cushion body 111 and the nose.
[0060] like Figure 3 and Figure 5As shown, the frame assembly 12 includes a connection channel, a frame body 121 and an extension arm 122, and the extension arm 122 extends outward from both ends of the frame body 121. The connection channel can be a positioning hole 126 set on the frame body 121, and the second connection element 124 and the second to-be-connected element 125 are respectively located on both sides of the positioning hole 126. The extension arm 122 is also provided with a headband connection hole 123 for connecting a headband.
[0061] like Figure 3 , Figure 6 and Figure 7 As shown, the breathing mask of the present invention further includes a pipe assembly 13 disposed on a side of the frame assembly 12 away from the cushion assembly 11, the pipe assembly 13 includes a pipe connector 131 and a hose 132 connected to the pipe connector 131, and one end of the hose 132 is connected to the ventilation air source through an air inlet connector 133. The pipe assembly 13 is also arranged about the axis L3 (as shown in FIG. Figure 6 A symmetrical structure that is symmetrical as shown).
[0062] It can be understood that the axis L of the respiratory mask, the axis L1 of the cushion assembly 11, the axis L2 of the frame assembly 12, and the axis L3 of the pipeline support coincide with each other.
[0063] like Figure 3 In the illustrated embodiment, the gasket assembly 11 is connected to the pipeline assembly 13. Specifically, the positioning hole 126 is a through-hole structure, so the gasket connector 113 can pass through the positioning hole 126, and after passing through the positioning hole 126, it is directly connected to the pipeline connector 131. The gasket connector 113 and the pipeline connector 131 can be connected by threaded connection, snap-fit connection, etc., so that the gasket assembly 11, the frame assembly 12 and the pipeline assembly 13 can maintain a firm fit.
[0064] The gasket connector 113 and the pipe connector 131 can be disassembled, and after disassembly, the internal dirt can be cleaned and disinfected with a brush. The above-mentioned direct connection method of the gasket connector 113 and the pipe connector 131 omits the hub structure and the sealing lip matched therewith in the prior art, thereby making the structure simpler, the process formability better, and easier to clean.
[0065] like Figure 6 As shown, the pipeline connector 131 is provided with an exhaust hole 134. The patient's exhaled gas can be discharged out of the breathing mask through the exhaust hole 134. Figure 3 The middle arrow shows the flow path of the ventilation gas. The ventilation gas source inputs the ventilation gas through the air inlet connector 133, and the ventilation gas is respectively input into the patient's nostrils through the two nasal plugs 112, and the patient's exhaled gas is discharged from the nasal plugs 112 and output to the outside of the breathing mask through the exhaust hole 134.
[0066] Example 2
[0067] like Fig.12 As shown, based on the above embodiment 1, the present invention provides a modified embodiment. The difference between the above embodiment 1 and the above embodiment 1 is that the frame assembly 12 is connected to the pipe connector 131. Specifically, the gasket connector 113 extends from one end of the positioning hole 126 into the positioning hole 126 and is connected to the positioning hole 126, and the pipe connector 131 extends from the other end of the positioning hole 126 into the positioning hole 126 and is connected to the positioning hole 126.
[0068] The advantage of this structure is that the gasket assembly 11 can be directly removed from the frame assembly 12, so it is more convenient to use. The frame assembly 12 and the pipe connector 131 adopt the above-mentioned direct connection method to omit the hub structure used for matching in the prior art, thereby making the structure simpler, the connection more convenient, and also easier to clean. Further, in order to achieve a sealed connection between the gasket assembly 11 and the frame assembly 12, a sealing ring 14 is provided between the gasket connector 113 and the positioning hole 126, which can be set in the groove of the inner wall of the positioning hole 126.
[0069] The similarities between this embodiment 2 and the above-mentioned embodiment 1 will not be repeated again.
[0070] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present 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 breathing mask, characterized in that: It comprises a frame assembly and a cushion assembly arranged inside the frame assembly, wherein a side of the cushion assembly away from the frame assembly is used to contact with the patient's face, and a gas chamber is formed inside the cushion assembly; Wherein, the frame assembly includes a connecting channel, the gasket assembly includes a gasket connector, the gasket connector passes through the connecting channel to be connected to the pipeline; or the gasket connector is arranged in the connecting channel so that the connecting channel is connected to the pipeline.
2. The breathing mask according to claim 1, characterized in that The cushion assembly is provided with a first connecting element and a first element to be connected, respectively located on both sides of its axis; the frame assembly is provided with a second connecting element and a second element to be connected, respectively located on both sides of its axis; the first connecting element and the second connecting element are respectively located on different sides of the axis of the respiratory mask; Wherein, the first connecting element is connected to the second element to be connected via magnetic force; the first element to be connected is connected to the second connecting element via magnetic force, and the polarity of the surface of the first connecting element facing the frame assembly is the same as the polarity of the surface of the second connecting element facing the pad assembly.
3. The breathing mask according to claim 2, characterized in that The first connecting element, the second connecting element, the first element to be connected and the second element to be connected are all magnetic parts. Among them, the polarity of the surface of the first connecting element facing the frame assembly is different from the polarity of the surface of the second connecting element facing the cushion assembly, and the polarity of the surface of the second connecting element facing the cushion assembly is different from the polarity of the surface of the first connecting element facing the frame assembly.
4. The breathing mask according to claim 2, characterized in that The first connecting element and the second connecting element are both magnetic members, and the first element to be connected and the second element to be connected are both metals that can be attracted by the magnetic members.
5. The breathing mask according to claim 2, characterized in that The first connecting element, the second connecting element and the second element to be connected are all magnetic members, and the first element to be connected is a metal that can be attracted by the magnetic member; The polarity of the surface of the first connecting element facing the frame assembly is different from the polarity of the surface of the second to-be-connected element facing the cushion assembly.
6. The breathing mask according to claim 2, characterized in that The first connecting element, the first element to be connected and the second connecting element are all magnetic members, and the second element to be connected is a metal that can be attracted by the magnetic member; The polarity of the surface of the second connecting element facing the cushion assembly is different from the polarity of the surface of the first element to be connected facing the frame assembly.
7. A breathing mask according to any one of claims 2 to 6, characterized in that The cushion assembly further comprises a cushion body and a nose plug arranged on a side of the cushion body away from the frame assembly, and the cushion connector is arranged on a side of the cushion body close to the frame assembly; Wherein, the first connecting element and the first element to be connected are respectively located on two sides of the gasket connector.
8. The breathing mask according to claim 7, characterized in that The frame assembly includes a frame body and an extension arm, wherein the extension arm extends outward from both ends of the frame body. The connecting channel is a positioning hole provided on the frame body, and the second connecting element and the second element to be connected are respectively located on both sides of the positioning hole.
9. The breathing mask according to claim 8, characterized in that It also includes a pipeline assembly arranged on a side of the frame assembly away from the cushion assembly, the pipeline assembly including a pipeline connector and a hose connected to the pipeline connector, one end of the hose is used to be connected to a ventilation gas source; wherein the gasket connector is disposed in the positioning hole, and the frame assembly is connected to the pipe connector; or The gasket connector is connected to the pipeline connector after passing through the positioning hole.
10. The breathing mask according to claim 9, characterized in that The pipe connector is provided with an exhaust hole, and the exhaust hole is located below the position where the pipe connector is connected with the frame assembly or the cushion assembly.
11. The breathing mask according to claim 8, characterized in that The extension arm is also provided with a headband connecting hole for connecting a headband.