Exhaust structure of a respiratory mask and respiratory mask

Abstract

This utility model relates to an exhaust structure for a breathing mask and a breathing mask in the field of breathing mask technology. The exhaust structure of the breathing mask of this utility model includes exhaust slits. Since the exhaust slits are constructed on different structures or on individual structures, it is not necessary to process separate exhaust holes for each structure, thereby simplifying the complexity of each structural component, reducing processing costs and improving product yield.

Description

Technical Field

[0001] This utility model relates to the field of respiratory mask technology, and in particular to an exhaust structure for a respiratory mask and a respiratory mask. Background Technology

[0002] When a breathing mask is worn on a patient's face, it forms a sealed chamber between the mask and the patient's face. Positive pressure ventilation gas is delivered through this sealed chamber to the patient's nose and / or mouth for breathing. Exhaled air is discharged into the external environment through vents on the mask's frame or bend. The manufacturing process for creating individual vents on the frame or bend is generally complex, resulting in higher production costs. Utility Model Content

[0003] This invention provides an exhaust structure for a breathing mask to solve at least one of the aforementioned technical problems.

[0004] This utility model provides an exhaust structure for a breathing mask, including an exhaust slit, wherein the exhaust slit includes a first surface and a second surface that are arranged opposite to each other and have a certain distance between them;

[0005] Wherein, one of the first surface and the second surface is constructed on the first structure, and the other is constructed on the second structure that mates with and connects to the first structure, for communicating the inner and outer spaces of the first structure and the second structure; or

[0006] Both the first surface and the second surface are constructed on the first structure or the second structure to connect the inner space and the outer space of the first structure or the second structure.

[0007] In one embodiment, the first structure includes a connection hole, and the first surface includes an inner wall of the connection hole; the second structure includes a connector that is inserted into the connection hole, and the second surface includes an outer wall of the connector; the venting gap includes a first venting gap defined by the inner wall of the connection hole and the outer wall of the connector.

[0008] In one embodiment, an inner flange protruding toward the center of the connecting hole is provided on the inner wall of the connecting hole, and the inner end face of the connector is disposed opposite to the inner flange. The first surface includes the surface of the inner flange facing the connector, the second surface includes the inner end face of the connector, and the venting gap includes a second venting gap defined by the surface of the inner flange facing the connector and the inner end face of the connector. The second venting gap communicates with the first venting gap.

[0009] In one embodiment, the connector head is further provided with a connecting arm located in the connecting hole, the connecting arm is provided with a first fastening part, and the connecting hole is provided with a second fastening part, the first fastening part and the second fastening part cooperating with each other.

[0010] In one embodiment, the first structure further includes an annular protrusion connected to the connecting hole, and the second structure further includes an annular groove disposed on the connector, wherein the annular protrusion can be inserted into the annular groove.

[0011] In one embodiment, the first structure includes a connection hole, and the first surface includes the outer end face of the connection hole;

[0012] The second structure includes a connector that is inserted into the connection hole. The outer wall of the connector is provided with an outwardly protruding flange. The outward flange is disposed opposite to the outer end face of the connection hole. The second surface includes the surface of the outward flange facing the connection hole. The exhaust gap includes a third exhaust gap defined by the surface of the outward flange facing the connection hole and the outer end face of the connector.

[0013] In one embodiment, one or more protrusions are provided on the surface of the outer flange facing the connecting hole, and the protrusions abut against the outer end face of the connecting hole.

[0014] In one embodiment, the connector is further provided with a stop portion located on one side of the connecting hole. The stop portion is configured to switch between a first state away from the inner end face of the connecting hole and a second state abutting against the inner end face of the connecting hole. In the first state, the first engaging portion of the connector abuts against the inner end face of the connecting hole; in the second state, the first engaging portion of the connector separates from the inner end face of the connecting hole.

[0015] In one embodiment, a slot is provided on the inner wall of the connecting hole, and a buckle is provided on the outer wall of the connector. When the connector rotates relative to the connecting hole in the connecting hole, the buckle can move in the slot to a locked connection position. When the connector rotates in the opposite direction relative to the connecting hole in the connecting hole, the buckle can move in the slot to an unlocked connection position.

[0016] In one embodiment, the first structure is provided with an air intake channel, and the exhaust gap is arranged circumferentially around the air intake channel.

[0017] In one embodiment, the first structure has an inclined sidewall, the outlet of the exhaust slit is located on the sidewall, the angle between the normal direction of the sidewall and a first direction is 10°-70°, and the first direction is a direction perpendicular to the axial direction of the intake passage.

[0018] In one embodiment, the exhaust slit has at least one deflection angle, the deflection angle being 80°-150°.

[0019] In one embodiment, the first surface and the second surface form an angle of 0°-20°.

[0020] In one embodiment, the exhaust slit has a uniform width, or the width of the exhaust slit gradually decreases from the inlet to the outlet of the exhaust slit.

[0021] In one embodiment, the width of the venting gap is 0.1mm-1mm.

[0022] This utility model also provides a breathing mask, including the exhaust structure of the above-mentioned breathing mask, and further including one or more of the following: a padding assembly, a frame, an intermediate component, a bend, and a ventilation gas pipeline.

[0023] Compared with the prior art, the advantage of this utility model is that, since the exhaust gaps are constructed on different structures or on individual structures, there is no need to process separate exhaust holes for each structure, which simplifies the complexity of each structural component, thereby reducing processing costs and improving the product yield. Attached Figure Description

[0024] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0025] Figure 1 and Figure 2 These are three-dimensional structural schematic diagrams of the breathing mask in Embodiment 1 of this utility model;

[0026] Figure 3 This is a front view of the breathing mask in Embodiment 1 of this utility model;

[0027] Figure 4 yes Figure 3 Sectional view at AA;

[0028] Figure 5 This is an exploded view of the breathing mask in Embodiment 1 of this utility model;

[0029] Figure 6 and Figure 7 They are Figure 1 A three-dimensional structural schematic diagram of the pad assembly shown;

[0030] Figure 8 yes Figure 1 A schematic diagram of the three-dimensional structure of the frame shown;

[0031] Figure 9 yes Figure 1 The front view of the frame shown;

[0032] Figure 10 yes Figure 9 Sectional view at BB;

[0033] Figure 11 yes Figure 9 Sectional view at CC;

[0034] Figure 12 yes Figure 1 A three-dimensional structural diagram of the ventilation gas pipeline shown;

[0035] Figure 13 This is a three-dimensional structural diagram of the second structure in Embodiment 2 of this utility model;

[0036] Figure 14 This is a three-dimensional structural diagram of the first structure in Embodiment 2 of this utility model;

[0037] Figure 15 This is a three-dimensional structural diagram of the first and second structures after they are combined in Embodiment 2 of this utility model;

[0038] Figure 16 This is a three-dimensional structural diagram of the first and second structures after they are combined in Embodiment 3 of this utility model, showing the stop portion in the first state;

[0039] Figure 17 This is a three-dimensional structural diagram of the first and second structures after they are combined in Embodiment 3 of this utility model, showing the stop portion in the second state;

[0040] Figure 18 This is a three-dimensional structural diagram of the second structure in Embodiment 4 of this utility model.

[0041] Figure 19 This is a three-dimensional structural diagram of the breathing mask in Embodiment 5 of this utility model;

[0042] Figure 20 yes Figure 19 A cross-sectional view of the breathing mask shown;

[0043] Figure 21 yes Figure 19 A schematic diagram of the three-dimensional structure of the intermediate component shown;

[0044] Figure 22yes Figure 19 A cross-sectional view of the intermediate component shown;

[0045] Figure label:

[0046] 10. Breathing mask; 11. Padding assembly; 12. Frame; 13. Ventilation tubing;

[0047] 14. Exhaust gap; 141. First exhaust gap; 142. Second exhaust gap; 143. Third exhaust gap;

[0048] 144. First surface; 145. Second surface;

[0049] 146. Exit of the exhaust slit; 147. Inlet of the exhaust slit;

[0050] 15. Pipe bends;

[0051] 113. Connecting hole; 120. Connector; 1201. Outer flange; 1202. Protrusion; 1203. Stop;

[0052] 1131. Annular protrusion; 123. Annular hole;

[0053] 1132. Outer end face of the connecting hole; 1133. Inner end face of the connecting hole; 1134. Slot;

[0054] 11341, First slot; 11342, Second slot; 11343, Stop; 11344, Locking slot;

[0055] 110. Inner wall; 125. Outer wall;

[0056] 111. Inner flange; 126. Inner end face of the connector;

[0057] 112. Nasal congestion;

[0058] 121. Headband fixing hole; 122. Pipe installation hole; 123. Annular groove; 124. First fastening part;

[0059] 127. Connecting arm;

[0060] 131. Frame mating end;

[0061] 3. Intermediate component; 31. First installation area; 32. Second installation area; 33. Side wall. Detailed Implementation

[0062] The present invention will be further described below with reference to the accompanying drawings.

[0063] This utility model provides an exhaust structure for a breathing mask, including an exhaust slit 14. The exhaust slit 14 includes a first surface and a second surface that are disposed opposite to each other and have a certain distance between them. One of the first and second surfaces is constructed on a first structure, and the other is constructed on a second structure that is connected to and cooperates with the first structure, for connecting the inner and outer spaces of the first and second structures; or both the first and second surfaces are constructed on the first structure, for connecting the inner and outer spaces of the first structure. In other words, the exhaust slit can be constructed on a single component, or the exhaust slit can be defined by two cooperating and connected structures.

[0064] The first structure is one of the following components of the breathing mask: the padding assembly, the frame, the intermediate component, the bend, and the ventilation gas line; the second structure is the other one of the following components of the breathing mask: the padding assembly, the frame, the intermediate component, the bend, and the ventilation gas line.

[0065] Therefore, by constructing exhaust slits 14 on different structures or on individual structures, this invention achieves several advantages. First, it eliminates the need for individual exhaust holes on each structure, simplifying the complexity of each component. Consequently, the cost of mold processing and wear for each component can be reduced, minimizing the development cycle. Second, exhausting through the exhaust slits 14 allows gas to be evenly dispersed from the edge of the mask or a specific location, resulting in a smoother airflow and reducing the likelihood of significant impact airflow. Third, exhausting through the exhaust slits 14 produces less noise than exhausting through individual exhaust holes because the gas is expelled at a lower speed, resulting in less noise, making it particularly suitable for nighttime use and preventing disturbance to the sleep of the user and others. Fourth, exhausting through the exhaust slits 14 avoids concentrated airflow blowing onto the bed partner. In the prior art, airflow from individual exhaust holes is concentrated in one direction, which may cause localized skin dryness with prolonged use. In contrast, the exhaust slits 14 of this invention disperse the airflow, reducing the impact of concentrated airflow on the skin.

[0066] Example 1

[0067] like Figures 1-12 As shown, in this embodiment 1, one of the first surface and the second surface is constructed on the first structure, and the other is constructed on the second structure that is connected to and cooperates with the first structure. That is, the exhaust gap is defined by the first structure and the second structure respectively.

[0068] The following description uses the first structure as the padding component 11 and the second structure as the frame 12 as an example.

[0069] like Figure 4 As stated above, and please combine with Figure 1 , Figure 2 , Figure 3 and Figure 5 The first structure is configured as a liner assembly 11 of a breathing mask. More specifically, the liner assembly 11 includes a nasal plug 112 and a support portion connected to the nasal plug 112, the support portion being made of a more rigid material than the nasal plug 112. The first structure may be constructed on the support portion, which includes a connection hole 113. Accordingly, a first surface includes an inner wall 110 of the connection hole 113. The second structure is configured as a frame 12 of the breathing mask, which includes a connector 120 that engages with the connection hole 113. A second surface includes an outer wall 125 of the connector 120, and an exhaust slit 14 includes a first exhaust slit 141 defined by the inner wall 110 of the connection hole 113 and the outer wall 125 of the connector 120. Figure 4 As shown, since the diameter of the connector 120 is slightly smaller than the diameter of the connecting hole 113, there is a certain distance between the outer wall 125 of the connector 120 and the inner wall of the connecting hole 113, which forms the first venting gap 141. Understandably, the first venting gap 141 extends along the axial direction of the connecting hole 113 or the connector 120.

[0070] Furthermore, such as Figure 6 and Figure 7 As shown, and please refer to Figure 4 An inner flange 111 protruding toward the center of the connection hole 113 is provided on the inner wall of the connection hole 113. The inner end face 126 of the connector is disposed opposite to the inner flange 111. The first surface includes the surface of the inner flange 111 facing the connector 120, and the second surface includes the inner end face 126 of the connector. The venting gap 14 includes a second venting gap 142 defined by the surface of the inner flange 111 facing the connector 120 and the inner end face 126 of the connector. The second venting gap 142 communicates with the first venting gap 141.

[0071] like Figure 4 As shown, the connector 120 is inserted into the connector hole 113, and there is a certain distance between the inner end face 126 of the connector and the inner flange 111, which forms the second venting gap 142. Understandably, the second venting gap 142 extends approximately in a direction perpendicular to the first venting gap 141. Figure 4 The middle arrow indicates the direction of gas flow in the exhaust slit 14.

[0072] Since the connector 120 is inserted into the connection hole 113 and the two are in fluid communication, ventilation gas can be delivered through the connector 120 to the connection hole 113 and provided for the patient's breathing. Understandably, the first exhaust slit 141 is circumferentially arranged around the connector 120 or the connection hole 113, thus allowing gas to be evenly dispersed from the edge or specific location of the second structure, resulting in a smoother exhaust airflow that is less likely to form significant impulsive airflow, avoiding disturbance to the sleep of the user and others.

[0073] Therefore, by constructing exhaust gaps on the first structure and the second structure respectively, this utility model eliminates the need to process separate exhaust holes for the first structure and the second structure, thereby simplifying the complexity of the first structure and the second structure, reducing processing costs and improving product yield.

[0074] like Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, the connector 120 is also provided with a connecting arm 127 located in the connecting hole 113. There can be two or more connecting arms 127. Each connecting arm 127 is provided with a first engaging portion 124, and the connecting hole 113 is provided with a second engaging portion. The first engaging portion 124 and the second engaging portion cooperate with each other. The first engaging portion 124 can be, for example, a protrusion extending outward from the end of the connecting arm 127, and the second engaging portion can be, for example, a protrusion extending from the inner wall of the connecting hole 113 towards the center of the connecting hole 113. The connecting arm 127 is an elastic arm, and therefore can undergo elastic deformation to allow the first engaging portion 124 and the second engaging portion to cooperate. After the first engaging portion 124 and the second engaging portion cooperate, it ensures that the surface of the inner flange 111 facing the connector 120 and the inner end face 126 of the connector do not contact each other, thereby ensuring that a second venting gap 142 can be formed between them. Alternatively, it can be conceivable that one of the first and second fastening parts 124 is a protruding structure and the other is a groove structure, and the two together can achieve the same effect.

[0075] like Figure 6 As shown, the first structure (shim assembly 11) also includes an annular protrusion 1131 connected to the connection hole 113, which extends axially along the connection hole 113; as Figure 9 and Figure 11 As shown, the second structure (frame 12) also includes an annular groove 123 provided on the connector 120, and the annular protrusion 1131 can be inserted into the annular groove 123, thereby ensuring the insertion connection between the pad assembly 11 and the frame 12.

[0076] like Figure 4As shown, the width of the first venting gap 141 is uniform, meaning that the outer wall 125 of the connector 120 is approximately parallel to the inner wall of the connecting hole 113, and the distance between them remains constant. The width of the second venting gap 142 is also uniform, meaning that the inner end face 126 of the connector is approximately parallel to the inner flange 111 on the connecting hole 113, and the distance between them remains constant. The widths of both the first venting gap 141 and the second venting gap 142 are between 0.1mm and 1mm, preferably between 0.1mm and 0.5mm.

[0077] Alternatively, it can be envisioned that the outer wall 125 of the connector 120 or the inner wall of the connecting hole 113 is a conical wall structure, so that the width of the first exhaust gap 141 gradually decreases in the direction toward the outlet of the exhaust gap. Similarly, the surface of the inner flange 111 on the connecting hole 113 facing the connector 120 can be set as an inclined surface, so that the width of the second exhaust gap 142 gradually decreases in the direction toward the first exhaust gap 141. This ensures that when the airflow is discharged from the outlet of the first exhaust gap 141, the discharged airflow is stable or even gradually compressed, so that the gas is discharged evenly, which can greatly reduce the problem of airflow turbulence and thus help reduce noise.

[0078] Understandably, the first structure (pad assembly 11) and the second structure (frame 12) in this embodiment 1 can be disassembled, that is, the connector 120 can be removed from the connector hole 113, thereby facilitating the cleaning of the first and second surfaces and preventing the venting gap 14 from becoming blocked.

[0079] The materials of the first and second surfaces can be the same or different. For example, both the first and second surfaces can be made of rigid materials; or one of the first and second surfaces can be made of a rigid material and the other of a semi-rigid or flexible material.

[0080] Example 2

[0081] Based on the above embodiment 1, a modified embodiment 2 is also provided.

[0082] like Figures 13-15 As shown, in this embodiment 2, the first structure can be one of the following: the liner assembly, frame, intermediate component, bend, and ventilation gas pipeline of the breathing mask; the second structure can be another of the following: the liner assembly, frame, intermediate component, bend, and ventilation gas pipeline of the breathing mask. This embodiment 2 does not limit the specific components.

[0083] like Figure 14 As shown, the first structure includes a connecting hole 113, and the first surface includes the outer end face 1132 of the connecting hole. Figure 13 and Figure 15As shown, the second structure includes a connector 120 that is inserted into the connecting hole 113. An outwardly protruding flange 1201 is provided on the outer wall of the connector 120. The flange 1201 is disposed opposite to the outer end face 1132 of the connecting hole. The second surface includes the surface of the flange 1201 facing the connecting hole 113. Figure 15 As shown, Figure 15 As shown, the exhaust slit 14 includes a third exhaust slit 143 defined by the surface of the outer flange 1201 facing the connection hole 113 and the outer end face 1132 of the connection hole.

[0084] Further reading is available upon request. Figure 13 One or more protrusions 1202 are provided on the surface of the outer flange 1201 facing the connecting hole 113. The protrusions 1202 abut against the outer end face 1132 of the connecting hole, thereby ensuring that the surface of the outer flange 1201 without protrusions 1202 does not contact the outer end face 1132 of the connecting hole. This ensures that there is a certain distance between the surface of the outer flange 1201 without protrusions 1202 and the outer end face 1132 of the connecting hole, thereby ensuring that a third venting gap 143 can be formed between them.

[0085] like Figure 15 As shown, similar to Embodiment 1 above, the connector 120 in Embodiment 2 can also be provided with a connecting arm 127, which has a first fastening part 124, such as... Figure 13 As shown, the first engaging portion 124 can be a protruding structure extending outward from the end face of the connecting arm 127. A second engaging portion is provided on the connecting hole 113, such as... Figure 14 As shown, the second fastening part can be, for example, the inner end face 1133 of the connecting hole. After the first fastening part 124 and the inner end face 1133 of the connecting hole fasten together, it can ensure that the protrusion 1202 abuts against the outer end face 1132 of the connecting hole, and the surface of the outer flange 1201 without the protrusion 1202 does not contact the outer end face 1132 of the connecting hole, thereby ensuring that a third venting gap 143 can be formed between them.

[0086] Understandably, the first structure and the second structure in this embodiment 2 can be disassembled, that is, the connector 120 can be removed from the connector hole 113, thereby facilitating the cleaning of the first surface and the second surface and preventing the exhaust gap 14 from becoming blocked.

[0087] The similarities between this embodiment 2 and the above embodiment 1 will not be repeated.

[0088] Example 3

[0089] Based on the above embodiment 2, a modified embodiment 3 is also provided.

[0090] like Figure 16 and Figure 17 As shown, based on the above embodiment 2, a stop portion 1203 is also provided on the connector 120. Specifically, in the above embodiment 2, the first fastening portion 124 is located at the end of the connecting arm 127. In this embodiment 3, the first fastening portion 124 can be located at the middle position of the connecting arm 127, and the stop portion 1203 can be located at the end of the connecting arm 127.

[0091] Therefore, as Figure 16 As shown, the stop portion 1203 is located on one side (inner side) of the connecting hole 113. The stop portion 1203 can be constructed as a ring structure, thereby connecting multiple connecting arms 127. The stop portion 1203 is configured to switch between a first state away from the inner end face 1133 of the connecting hole and a second state abutting against the inner end face 1133 of the connecting hole. When the stop portion 1203 is in the first state, as shown... Figure 16 As shown, the first engaging part 124 abuts against the inner end face 1133 of the connecting hole; as Figure 17 As shown, when the stop portion 1203 is in the second state, the first engaging portion 124 is separated from the inner end face 1133 of the connecting hole.

[0092] Therefore, in this embodiment 3, by providing a stop portion 1203, the connector 120 can be pulled out of the connection hole 113, but it will not completely detach from the connection hole 113. Therefore, when the connector 120 can be pulled out of the connection hole 113, the distance between the surface of the outer flange 1201 without the protrusion 1202 and the outer end face 1132 of the connection hole increases, for example, it can increase to 5mm-15mm, thereby facilitating the cleaning of the first and second surfaces and preventing the exhaust gap 14 (third exhaust gap 143) from becoming blocked.

[0093] Therefore, in this embodiment 3, by adding a stop 1203 on the basis of the above embodiment 2, the connector 120 can be pulled out from the connection hole 113, but will not completely detach from the connection hole 113. This facilitates the cleaning of the exhaust gap 14 (third exhaust gap 143) and prevents the loss of the first structure or the second structure after disassembly.

[0094] Example 4

[0095] Based on the above embodiments 2 and 3, a modified embodiment 4 is also provided.

[0096] Understandably, in Embodiments 1, 2, and 3 above, the insertion and removal between the first and second structures are all performed along their axial direction; that is, the first and second structures move relative to each other along their axial direction to separate or connect. Embodiment 4 differs from the above embodiments in that the separation or connection between the first and second structures is achieved through relative rotation.

[0097] Specifically, such as Figure 18 As shown, a slot 1134 is provided on the inner wall of the connection hole 113, and a buckle (not shown) is provided on the outer wall of the connector 120. When the connector 120 rotates relative to the connection hole 113 in the connection hole 113, the buckle can move in the slot 1134 to the locked connection position. When the connector 120 rotates in the opposite direction relative to the connection hole 113 in the connection hole 113, the buckle can move in the slot 1134 to the unlocked connection position.

[0098] like Figure 18 As shown, the slot 1134 is constructed as an L-shaped slot, which includes a first slot 11341 extending axially along the connecting hole 113 and a second slot 11342 extending circumferentially along the connecting hole 113. Therefore, when the connector 120 is inserted into the connecting hole 113, the latch first enters the first slot 11341 and moves to the connection point of the first slot 11341 and the second slot 11342 as the connector 120 is inserted deeper into the connecting hole 113. As the connector 120 rotates relative to the connecting hole 113, it can move from the connection point of the first slot 11341 and the second slot 11342 to the second slot 11342.

[0099] Furthermore, a stop 11343 is provided at one end of the first slot 11341 near the outer end face 1132 of the connecting hole, and a locking groove 11344 is provided at the end of the second slot 1134 away from the first slot 11341. As described above, when the connector 120 is inserted into the connecting hole 113, the latch needs to deform slightly to pass over the stop 11343 and enter the first slot 11341. It can also move from the second slot 11342 to the locking groove 11344 as the connector 120 rotates relative to the connecting hole 113, thus achieving a locked connection position. Understandably, the first and second structures are now fully connected.

[0100] Conversely, when it is necessary to disassemble the first and second structures, the connector 120 can be rotated in the opposite direction relative to the connecting hole 113, causing the buckle to deform slightly so that it passes over the locking groove 11344 and slides into the second slot 11342. As the connector 120 rotates in the opposite direction relative to the connecting hole 113, the buckle moves from the second slot 11342 to the first slot 11341. At this time, the connector 120 can be pulled out of the connecting hole 113, thereby increasing the width of the venting gap 14 (the third venting gap 143), which facilitates cleaning. Furthermore, due to the blocking effect of the stop 11343 on the buckle, the connector 120 and the connecting hole 113 will not completely separate, thus preventing the loss of the first or second structure after disassembly.

[0101] In this embodiment 4, the connection between the first structure and the second structure is achieved by rotation, that is, by the tightening friction between the slot 1134 and the buckle. Therefore, it can be ensured that after repeated use and wear, the first structure and the second structure can still maintain a pressed state, and the distance between the first surface and the second surface of the exhaust gap 14 (third exhaust gap 143) remains unchanged, thereby avoiding the phenomenon of air leakage between the first structure and the second structure.

[0102] Example 5

[0103] like Figures 19-22 As shown, the exhaust slit in this embodiment 5 is constructed on a single structure, for example, on a first structure or a second structure.

[0104] The first or second structure can be one of the following: the liner assembly, frame, intermediate component, bend, and ventilation gas line of the breathing mask. The following description uses the example of an exhaust slit constructed on the intermediate component.

[0105] like Figure 19 and Figure 20 As shown, intermediate component 3 is connected to frame 12 and bend 15 respectively. Figure 21 As shown, the intermediate component 3 includes a first mounting area 31 for connecting to the bend 15. The connection between the first mounting area 31 and the bend 15 can be cylindrical or spherical. When the first mounting area 31 and the bend 15 are cylindrically connected, a revolute joint is formed between the intermediate component 3 and the bend 15; when the first mounting area 31 and the bend 15 are spherically connected, a spherical joint is formed between the intermediate component 3 and the bend 15.

[0106] The first mounting area 31 of intermediate component 3 defines the air intake passage, such as Figure 21 As shown, the exhaust slit 14 is constructed on the intermediate part 3, and the exhaust slit 14 is arranged circumferentially around the intake passage.

[0107] like Figure 21 and Figure 22 As shown, the intermediate component 3 has an inclined sidewall 33, and the outlet 146 of the exhaust slit is located on the sidewall 33. The angle between the normal direction of the sidewall 33 and the first direction is 10°-70°, preferably 45°-55°. The first direction is perpendicular to the axial direction of the intake passage. The inlet 147 of the exhaust slit is substantially parallel to the radial direction of the intermediate component.

[0108] like Figure 21 and Figure 22 As shown, the exhaust slit 14 has at least one deflection angle, which is 80°-150°, preferably 90°-110°. The deflection angle refers to the angle between the direction of the airflow before and after deflection in the exhaust slit 14. Figure 22 As shown, the airflow undergoes an angular deflection between the inlet 147 and the outlet 146 of the exhaust slit. Specifically, the angle between the airflow at the inlet 147 and the airflow at the outlet 146 is 80°-150°, preferably 90°-110°. This deflection allows the airflow to diffuse circumferentially, maximizing the diffusion area of ​​the exhaust airflow.

[0109] Understandably, the exhaust gap 14 can have multiple deflection angles. By flexibly adopting one or multiple deflection methods, the optimal layout of the exhaust scheme can be obtained.

[0110] Furthermore, an angle of 0°-20° is formed between the first surface 144 and the second surface 145. For example... Figure 22 As shown, the first surface 144 and the second surface 145 are approximately parallel, forming an angle of 0°, near the inlet 147 of the exhaust slit. Near the outlet 146 of the exhaust slit, the first surface 144 and the second surface 145 form an angle greater than 0°. This ensures that when the airflow exits from the outlet 146 of the exhaust slit, the exhaust airflow is stable and may even be gradually compressed, resulting in uniform gas discharge. This significantly reduces airflow turbulence and thus helps to reduce noise.

[0111] The exhaust slit 14 can have a uniform width, or the width of the exhaust slit 14 can gradually decrease from the inlet 147 to the outlet 146. The width of the exhaust slit 14 is 0.1mm-1mm, and the width of the outlet 146 is 0.1mm-0.8mm, which can be slightly smaller than the width at other locations of the exhaust slit 14, to ensure stable or even gradually compressed exhaust airflow, so that the gas is discharged uniformly.

[0112] Understandably, by constructing the venting gap 14 in the intermediate component 3, the structural complexity of the intermediate component 3 is greatly simplified, eliminating the need to construct a separate venting hole. Consequently, the mold processing and wear costs of processing the intermediate component 3 can also be reduced, thereby minimizing the R&D cycle.

[0113] This utility model also provides a breathing mask, including the exhaust structure of the breathing mask in the above embodiments, and further including one or more of the following: a padding assembly, a frame, an intermediate component, a bend, and a ventilation gas pipeline.

[0114] In some alternative implementations, such as Figure 1 As shown, the breathing mask 10 includes a padding assembly 11, a frame 12 connected to the padding assembly 11, and a ventilation gas tubing 13 connected to the frame 12, as shown. Figure 13 As shown, the frame mating end 131 of the venting gas pipeline 13 is connected to the side of the frame 12 away from the padding assembly 11.

[0115] The pad assembly 11 includes two nasal plugs 112 and a support portion connected to the nasal plugs 112, the support portion being made of a more rigid material than the nasal plugs 112. The nasal plugs 112 are inserted into the patient's nostrils, and the ventilation gas line 13, the frame 12, and the pad assembly 11 are in fluid communication, so that the ventilation gas line 13 can deliver ventilation gas to the nasal plugs 112 and into the patient's nose.

[0116] like Figure 8 As shown, the frame 12 includes two bone beam arms, each with a headband fixing hole 121 at its end, for connecting to a headband to fix the headband to the patient's face.

[0117] In some alternative implementations, such as Figure 19 and Figure 20 As shown, the breathing mask 10 includes a padding assembly 11, a frame 12 connected to the padding assembly 11, an intermediate member 3 connected to the frame 12, and a curved tube 15 connected to the intermediate member 3. Figure 20 As shown, the curved tube 15 passes through the intermediate member 3 and connects to the liner assembly 11, thereby delivering ventilation gas to the liner assembly 11. In this embodiment, the liner assembly 11 can contact the patient's entire face, or it can contact only the area below the patient's nose and the mouth area.

[0118] The intermediate component 3 can be made of the same material as the frame 12 and / or the bend 15, or it can be made of a different material. For example, the intermediate component 3 can be made of polypropylene (PP) or polycarbonate (PC). The intermediate component 3 can be securely connected to the frame 12 by ultrasonic welding, adhesive bonding, or directly assembled to the frame 12. When the intermediate component 3 and the frame 12 are made of the same material, it is preferable to connect the intermediate component 3 to the frame 12 by ultrasonic welding; when the intermediate component 3 and the frame 12 are made of different materials, it is preferable to connect the intermediate component 3 to the frame 12 by assembly.

[0119] like Figure 19 As shown, the outer plane of the mating point between the frame 12 and the intermediate component 3 of the breathing mask 10 is the reference plane α. The direction perpendicular to the reference plane α is the insertion / removal direction, and the direction parallel to the reference plane α is the circumferential direction. The padding assembly 11 and the frame 12 can be two independent parts, connected together by assembly. Alternatively, they can be a single molded structure, where the padding assembly 11 and the frame 12 are integrated into one part.

[0120] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The 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. An exhaust structure for a breathing mask, characterized in that, The exhaust vent includes a first surface and a second surface that are disposed opposite to each other and have a certain distance between them. Wherein, one of the first surface and the second surface is constructed on the first structure, and the other is constructed on the second structure that mates with and connects to the first structure, for communicating the inner and outer spaces of the first structure and the second structure; or Both the first surface and the second surface are constructed on the first structure or the second structure to connect the inner space and the outer space of the first structure or the second structure.

2. The exhaust structure of the breathing mask according to claim 1, characterized in that, The first structure includes a connecting hole, and the first surface includes the inner wall of the connecting hole; the second structure includes a connector that is inserted into the connecting hole, and the second surface includes the outer wall of the connector; the venting gap includes a first venting gap defined by the inner wall of the connecting hole and the outer wall of the connector.

3. The exhaust structure of the breathing mask according to claim 2, characterized in that, The inner wall of the connecting hole is provided with an inner flange that protrudes toward the center of the connecting hole. The inner end face of the connector is disposed opposite to the inner flange. The first surface includes the surface of the inner flange facing the connector. The second surface includes the inner end face of the connector. The venting gap includes a second venting gap defined by the surface of the inner flange facing the connector and the inner end face of the connector. The second venting gap communicates with the first venting gap.

4. The exhaust structure of the breathing mask according to claim 3, characterized in that, The connector head is also provided with a connecting arm located in the connecting hole. The connecting arm is provided with a first fastening part, and the connecting hole is provided with a second fastening part. The first fastening part and the second fastening part cooperate with each other.

5. The exhaust structure of the breathing mask according to any one of claims 2-4, characterized in that, The first structure further includes an annular protrusion connected to the connecting hole, and the second structure further includes an annular groove disposed on the connector head, wherein the annular protrusion can be inserted into the annular groove.

6. The exhaust structure of the breathing mask according to claim 1, characterized in that, The first structure includes a connecting hole, and the first surface includes the outer end face of the connecting hole; The second structure includes a connector that is inserted into the connection hole. The outer wall of the connector is provided with an outwardly protruding flange. The outward flange is disposed opposite to the outer end face of the connection hole. The second surface includes the surface of the outward flange facing the connection hole. The exhaust gap includes a third exhaust gap defined by the surface of the outward flange facing the connection hole and the outer end face of the connector.

7. The exhaust structure of the breathing mask according to claim 6, characterized in that, One or more protrusions are provided on the surface of the outer flange facing the connecting hole, and the protrusions abut against the outer end face of the connecting hole.

8. The exhaust structure of the breathing mask according to claim 6 or 7, characterized in that, The connector is also provided with a stop portion, which is located on one side of the connecting hole. The stop portion is configured to switch between a first state away from the inner end face of the connecting hole and a second state that abuts against the inner end face of the connecting hole. When the stop portion is in the first state, the first engaging portion of the connector abuts against the inner end face of the connecting hole. When the stop portion is in the second state, the first engaging portion of the connector is separated from the inner end face of the connecting hole.

9. The exhaust structure of the breathing mask according to claim 6 or 7, characterized in that, A slot is provided on the inner wall of the connecting hole, and a buckle is provided on the outer wall of the connector. When the connector rotates relative to the connecting hole in the connecting hole, the buckle can move in the slot to the locked connection position. When the connector rotates in the opposite direction relative to the connecting hole in the connecting hole, the buckle can move in the slot to the unlocked connection position.

10. The exhaust structure of the breathing mask according to claim 1, characterized in that, The first structure is provided with an air intake channel, and the exhaust gap is arranged circumferentially around the air intake channel; The first structure has an inclined sidewall, the outlet of the exhaust slit is located on the sidewall, the angle between the normal direction of the sidewall and a first direction is 10°-70°, and the first direction is a direction perpendicular to the axial direction of the intake passage; and / or The exhaust slit has at least one deflection angle, which is between 80° and 150°.

11. The exhaust structure of the breathing mask according to claim 1, characterized in that, An angle of 0°-20° is formed between the first surface and the second surface.

12. The exhaust structure of the breathing mask according to claim 1, characterized in that, The exhaust slit has a uniform width, or the width of the exhaust slit gradually decreases from the inlet to the outlet; and / or The width of the exhaust slit is 0.1mm-1mm.

13. A breathing mask, characterized in that, The exhaust structure of the breathing mask according to any one of claims 1-12 further includes one or more of the following: a padding assembly, a frame, an intermediate component, a bend, and a ventilation gas line.

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