Breathing pipeline connector

Abstract

The breathing pipeline connector is used for being detachably connected with an air conveying pipeline and comprises a connector body and an elastic component arranged on the connector body in a sleeving mode, and the connector body and the elastic component are matched to form an airflow channel for fluid circulation; the connector body comprises a pipe body and two first cantilever structures arranged along the pipe body in an aligned mode, each first cantilever structure is provided with a pressing part and a clamping part, the air conveying pipeline is provided with a matching part matched with the clamping part, the breathing pipeline connector is connected with the air conveying pipeline through clamping matching of the clamping parts and the matching parts, and the pressing parts are connected with the pipe body. The pressing part can deflect relative to the pipe body under the action of external force so as to drive the clamping part and the matching part to be unlocked. Due to the fact that the two first cantilever structures are arranged along the pipe body in the aligned mode, a double-finger pressing area conforming to ergonomics is formed, pressing on the pressing part can be achieved through natural kneading of the thumb and the index finger, and therefore the pressing part is driven by one hand to move so as to achieve unlocking of the connector and the gas conveying pipeline.

Description

Technical Field

[0001] This application belongs to the field of respiratory therapy equipment technology, specifically relating to a respiratory tubing connector. Background Technology

[0002] Respiratory therapy equipment such as ventilators and high-flow oxygen therapy devices need to deliver therapeutic gases to users safely and effectively through gas delivery lines. In actual use, respiratory therapy equipment usually comes with a fixed gas delivery line, but in order to meet the needs of different clinical scenarios, it is often necessary to connect to external extension lines through connectors to extend the gas delivery distance or connect different breathing masks / nasal plugs.

[0003] However, existing tubing connection methods have several problems: many connectors typically require two hands to unlock and install, with one hand holding the gas tubing and the other operating the connector's latches or controlling its reverse rotation. This demands high hand dexterity, making it difficult for those with limited mobility to complete independently. Furthermore, the unlocking process is time-consuming during rescue operations or equipment relocation, potentially delaying treatment. In addition, to ensure a tight connection between the connector and the gas tubing, the connector usually requires a significant locking force, necessitating considerable control to unlock it. This is particularly difficult for postoperative patients or elderly users, causing inconvenience. Moreover, the connection and unlocking operations of the connector and gas tubing are complex. Traditional connectors often use rigid latches or threaded tightening structures, requiring precise alignment of the latches or multiple rotations to complete the connection, making the process cumbersome and potentially delaying treatment, especially in emergencies. Utility Model Content

[0004] This application provides a breathing tubing connector to solve the technical problem that traditional breathing tubing connectors are difficult to unlock and connect to the air supply line, and that some users with limited mobility have difficulty operating the unlocking and connection.

[0005] The technical solution adopted in this application is as follows:

[0006] A breathing tubing connector for detachable connection to a gas delivery tubing includes a connector body and an elastic member sleeved on the connector body. The connector body and the elastic member cooperate to form an airflow channel for fluid passage. The connector body includes a tube and two first cantilever structures arranged along the tube. Each first cantilever structure has a pressing part and a snap-fit ​​part. The gas delivery tubing has a mating part adapted to the snap-fit ​​part. The breathing tubing connector is connected to the gas delivery tubing through the snap-fit ​​part and the mating part. The pressing part is connected to the tube body and can deflect relative to the tube body under external force to unlock the snap-fit ​​part from the mating part and return to its original position after the external force is removed. The elastic member at least partially covers the pressing part.

[0007] The breathing tubing connector described in this application also includes the following additional technical features:

[0008] The gas delivery tubing is fitted onto the breathing tubing connector. The snap-fit ​​portion includes a first snap-fit ​​protrusion at the top of the snap-fit ​​portion and a first snap-fit ​​groove below the first snap-fit ​​protrusion. The mating portion includes a second snap-fit ​​groove on the inner wall of the gas delivery tubing and a second snap-fit ​​protrusion below the second snap-fit ​​groove. When the gas delivery tubing is connected to the breathing tubing connector, the first snap-fit ​​protrusion engages with the second snap-fit ​​groove, and the second snap-fit ​​protrusion engages with the first snap-fit ​​groove, respectively.

[0009] A first guide surface is provided below the second snap-fit ​​protrusion, and a second guide surface is provided at the top of the first snap-fit ​​protrusion. The first guide surface and the second guide surface cooperate to guide the breathing tubing connector to extend into the air supply tubing.

[0010] The second slot and the second engaging protrusion extend circumferentially around the inner wall of the gas pipeline.

[0011] The connector body also includes a second cantilever structure fixedly connected to the tube body. There are two second cantilever structures, which are respectively located between the two first cantilever structures. There is an unlocking gap between the first cantilever structure and the second cantilever structure, and the elastic member covers the unlocking gap.

[0012] The extension length of the second cantilever structure along the circumference of the tube is greater than the extension length of the first cantilever structure along the circumference of the tube.

[0013] The elastic member includes a first sealing ring located at the top of the pressing part, which abuts against the end of the air supply line when the breathing tube connector is connected to the air supply line.

[0014] The elastic member includes a second sealing ring located at the top of the snap-fit ​​portion. The outer periphery of the second sealing ring is provided with a sealing rib. When the breathing tubing connector is connected to the air supply tubing, the sealing rib abuts against the inner wall of the air supply tubing.

[0015] The second sealing ring and the top of the snap-fit ​​part are respectively provided with a first mounting step and a second mounting step that are adapted to each other, and the first mounting step and the second mounting step are aligned and fastened together.

[0016] The gas delivery line is fitted onto the breathing line connector. The top of the tube body is provided with a receiving boss. The portion of the elastic member that wraps around the pressing part abuts against the bottom wall of the gas delivery line and the receiving boss.

[0017] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0018] 1. The respiratory tubing connector of this application includes a connector body and an elastic member. The elastic member and the connector body cooperate to form a sealed airflow channel, reducing the risk of airflow leakage and providing a stable airflow environment for respiratory therapy equipment. Furthermore, the connector body of this application includes a tube body and two first cantilever structures arranged aligned along the tube body. Each first cantilever structure has a pressing part and a snap-fit ​​part. The air supply tubing has a mating part, and the connector and air supply tubing are connected through the snap-fit ​​engagement of the snap-fit ​​part and the mating part. Because the two first cantilever structures are aligned along the tube body, they form an ergonomic two-finger pressing area. For example, users can easily press the pressing part by naturally pinching together their thumb and forefinger, thereby using one hand to move the pressing part to unlock the connector and air supply tubing. The symmetrically designed pressing part spacing can adapt to different user hand shapes, ensuring that most users can apply force comfortably. Furthermore, the elastic component covers the surface of the pressing part, forming an elastic contact interface. When the user presses with two fingers, the elastic component deforms first, absorbing the initial pressing impact force, and then the pressing part expands outward through the elastic restoring force. For some elderly or frail users, this group can apply force slowly and for a longer period of time to deform the elastic component, and then achieve the movement of the pressing part with the assistance of the elastic component's restoring force, reducing the force required from the user.

[0019] Furthermore, the flexibility of the elastic component allows it to dynamically couple with the first cantilever structure. When the user presses the pressing part, the elastic component first deforms, and then pushes the pressing part to move through its own rebound force. This phased force transmission path makes the unlocking action smoother. Compared with the sticking sensation when a traditional rigid buckle is released, the connector of this application provides a gentler and more natural tactile feedback to the user during unlocking, which helps to improve the user experience. Moreover, due to the compressibility of the elastic component, the connector can adapt to the different operating habits and force differences of different users. For example, users with weaker strength can gradually unlock by extending the pressing time and making full use of the deformation and creep characteristics of the elastic component, without having to apply a strong force instantly; users with stronger strength can quickly trigger unlocking by pressing briefly, taking into account both operational flexibility and inclusiveness.

[0020] 2. In a preferred embodiment of this application, when the connector and the gas pipeline are connected, the first locking protrusion engages with the second locking groove, and the second locking protrusion engages with the first locking groove simultaneously, achieving a double locking of the connector and the gas pipeline, ensuring a stable connection between them. The engagement of the first locking protrusion and the second locking groove forms the first locking point, and the engagement of the second locking protrusion and the first locking groove serves as the second locking point, jointly bearing the axial tensile force of the connector and the gas pipeline. This dual-stage locking design can cope with multi-directional external force interference, reduce the probability of separation between the connector and the gas pipeline caused by single-point locking, and ensure the stability of the airflow channel.

[0021] 3. In a preferred embodiment of this application, the first guide surface and the second guide surface guide the connection between the connector and the gas pipeline. During the connection process, the first guide surface and the second guide surface contact and guide the first cantilever structure to deform inward, allowing the connector to smoothly insert into the gas pipeline. In this way, the inclined surfaces of the first and second guide surfaces cooperate to achieve self-guided insertion of the connector. Even if the user applies a deviation in the pushing force, the connector can still be inserted axially into the gas pipeline under the guidance of the first and second guide surfaces. Simultaneously, guiding the first locking protrusion into the second locking groove and the second locking protrusion into the first locking groove significantly improves the smoothness of the connection between the connector and the gas pipeline. In addition, the arrangement of the first and second guide surfaces provides a relatively gentle force gradient curve for connector insertion. As the connector is inserted, the user can feel slight resistance, prompting the user to start alignment. As the insertion depth increases, the resistance increases slightly and linearly. Finally, after the first and second locking protrusions are engaged in the second and first slots respectively, the resistance drops sharply, providing the user with a clear sense of completion and indicating that the connection is complete.

[0022] 4. In a preferred embodiment of this application, the second cantilever structure functions to form an airflow channel and provides support and vibration damping for the airflow channel. The second cantilever structure reduces the span between adjacent first cantilever structures, thereby reducing the sealing pressure on the elastic member and ensuring the stability of the airflow channel. The alternating arrangement of the first and second cantilever structures forms a frame-like support structure, significantly improving the overall bending stiffness of the connector. Furthermore, the coverage of the unlocking gap by the elastic member physically isolates the airflow channel, preventing external dust, debris, and other foreign objects from entering the airflow channel through the unlocking gap, thus helping to maintain the cleanliness of the airflow channel.

[0023] 5. In a preferred embodiment of this application, the first sealing ring abuts against the plane of the end of the air supply line to form an end-face seal. The first sealing ring, made of elastic material, can radially expand under the influence of airflow pressure fluctuations, temperature changes, and other factors, filling the gap between the end of the air supply line and the connector, thus improving the sealing reliability of the airflow channel. During the assembly and connection of the connector and the air supply line, after the connector is inserted, the end of the air supply line abuts against the first sealing ring. The first sealing ring generates slight resistance when in contact with the end of the air supply line during the connection process, providing clear tactile feedback to the user and helping to determine whether the connection is in place. Furthermore, the elastic deformation of the first sealing ring can absorb some of the insertion force when the user inserts the line, making the connection smoother and reducing the sticking sensation caused by rigid contact during line connection. Moreover, as part of the elastic component, the first sealing ring can automatically settle into position when the elastic component is installed, simplifying the assembly process of the breathing line connector.

[0024] 6. In a preferred embodiment of this application, when the connector is inserted into the gas pipeline, the sealing rib at the top of the snap-fit ​​portion first contacts the inner wall of the pipeline and undergoes pre-compression and deformation. After the connector and the gas pipeline are in place, the sealing rib, under its own deformation, maintains tight contact with the inner wall of the gas pipeline, achieving a tight fit between the connector and the gas pipeline. When the connector or the gas pipeline is pulled against each other due to external forces or other factors, the connector tends to have a slight axial displacement. The elastic deformation of the sealing rib can compensate for the displacement, maintain the contact pressure of the sealing surface, and reduce the probability of air leakage caused by the momentary loose connection between the connector and the gas pipeline. In addition, when the airflow velocity is too high and airflow pulsation occurs, the elastic characteristics of the sealing rib can absorb the pressure fluctuation energy, reduce high-frequency vibration wear of the sealing surface, and extend the service life. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the gas delivery pipeline and breathing pipeline connector according to one embodiment of this application;

[0027] Figure 2 This is a cross-sectional view of the respiratory tubing connector portion structure according to one embodiment of this application;

[0028] Figure 3 This is a cross-sectional view of the gas delivery line and breathing line connector according to one embodiment of this application;

[0029] Figure 4 for Figure 3 Enlarged view of part A;

[0030] Figure 5 This is a front view of the connector body according to one embodiment of this application;

[0031] Figure 6 This is an exploded view of a breathing tubing connector according to one embodiment of this application;

[0032] Figure 7 This is a schematic diagram of the connector body according to one embodiment of this application.

[0033] List of components and reference numerals:

[0034] 1. Gas pipeline; 11. Fitting part; 111. Second snap-fit ​​protrusion; 112. Second snap-fit ​​groove;

[0035] 2 Connector body, 21 First cantilever structure, 211 Snap-fit ​​part, 2111 First snap-fit ​​protrusion, 2112 First slot, 2113 Second mounting step, 212 Pressing part, 22 Second cantilever structure, 23 Unlocking gap, 24 Tube body, 241 Receiving boss.

[0036] 3 elastic components, 31 first sealing ring, 32 second sealing ring, 321 sealing rib, 322 first mounting step;

[0037] 4 airflow channels;

[0038] 5. Install the groove;

[0039] 6. First guide surface;

[0040] 7. Second guide surface. Detailed Implementation

[0041] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0042] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0043] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0046] like Figures 1 to 4As shown, a breathing tubing connector is used for detachable connection with a gas supply line 1. It includes a connector body 2 and an elastic member 3 sleeved on the connector body 2. The connector body 2 and the elastic member 3 cooperate to form an airflow channel 4 for fluid flow. The connector body 2 includes a tube body 24 and two first cantilever structures 21 arranged along the tube body 24. The first cantilever structure 21 has a pressing part 212 and a snap-fit ​​part 211. The gas supply line 1 is provided with a mating part 11 adapted to the snap-fit ​​part 211. The breathing tubing connector is connected to the gas supply line 1 through the snap-fit ​​mating part 211 and the mating part 11. The pressing part 212 is connected to the tube body 24. The pressing part 212 can deflect relative to the tube body 24 under the action of external force to drive the snap-fit ​​part 211 and the mating part 11 to unlock and return to its original position after the external force is removed. The elastic member 3 at least partially covers the pressing part 212.

[0047] The respiratory tubing connector of this application includes a connector body 2 and an elastic member 3. The elastic member 3 and the connector body 2 cooperate to form a sealed airflow channel 4, reducing the risk of airflow leakage and providing a stable airflow environment for respiratory therapy equipment. Furthermore, the connector body 2 of this application includes a tube 24 and two first cantilever structures 21 arranged symmetrically along the tube 24. Each first cantilever structure 21 has a pressing part 212 and a snap-fit ​​part 211. The air supply tubing 1 is provided with a mating part 11. The connector is connected to the air supply tubing 1 through the snap-fit ​​mating part 211. Because the two first cantilever structures 21 are arranged symmetrically along the tube 24, they form an ergonomic two-finger pressing area. For example, users can easily press the pressing part 212 by naturally pinching it with their thumb and forefinger, thereby moving the pressing part 212 with one hand to unlock the connector from the air supply tubing 1. The symmetrically designed spacing of the pressing parts 212 can adapt to different user hand shapes, ensuring that most users can apply pressure comfortably. Furthermore, the elastic member 3 covers the surface of the pressing part 212, forming an elastic contact interface. When the user presses with two fingers, the elastic member 3 first deforms, absorbing the initial pressing impact force, and then the pressing part 212 expands outward through the elastic restoring force. For some elderly or frail users, this group can apply force slowly and for a longer period of time to deform the elastic member 3, and then realize the movement of the pressing part 212 with the assistance of the restoring force of the elastic member 3, reducing the force required from the user.

[0048] Furthermore, the flexibility of the elastic member 3 allows it to dynamically couple with the first cantilever structure 21. When the user presses the pressing part 212, the elastic member 3 first deforms, and then pushes the pressing part 212 to move through its own rebound force. This phased force transmission path makes the unlocking action smoother. Compared with the sticking sensation when a traditional rigid buckle is released, the connector of this application provides a gentler and more natural tactile feedback to the user when unlocking, which helps to improve the user experience. Moreover, due to the compressibility of the elastic member 3, the connector can adapt to the different operating habits and force differences of different users. For example, users with weaker strength can gradually unlock by extending the pressing time and making full use of the deformation creep characteristics of the elastic member 3, without having to apply a strong force instantly; users with stronger strength can quickly trigger unlocking by pressing briefly, taking into account both operational flexibility and inclusiveness.

[0049] Figure 1 The middle arrow X indicates the pressing direction of the pressing part 212. The user can complete the movement of the pressing part by squeezing the pressing part 212 with two fingers.

[0050] Preferably, the pressing part 212 is integrally formed with the tube body 24, and the pressing part 212 is hinged to the tube body 24.

[0051] As a preferred embodiment of this application, such as Figure 3 , Figure 4 As shown, the air supply line 1 is fitted onto the breathing line connector. The snap-fit ​​part 211 includes a first snap-fit ​​protrusion 2111 at the top of the snap-fit ​​part 211 and a first snap-fit ​​groove 2112 below the first snap-fit ​​protrusion 2111. The mating part 11 includes a second snap-fit ​​groove 112 on the inner wall of the air supply line 1 and a second snap-fit ​​protrusion 111 below the second snap-fit ​​groove 112. When the air supply line 1 is connected to the breathing line connector, the first snap-fit ​​protrusion 2111 and the second snap-fit ​​groove 112, and the second snap-fit ​​protrusion 111 and the first snap-fit ​​groove 2112 are respectively snap-fitted and mated.

[0052] When the connector and the gas pipeline 1 are connected, the first locking protrusion 2111 engages with the second locking groove 112, and the second locking protrusion 111 engages with the first locking groove 2112 simultaneously, achieving a double locking of the connector and the gas pipeline 1, ensuring a stable connection between them. The engagement of the first locking protrusion 2111 and the second locking groove 112 forms the first locking point, and the engagement of the second locking protrusion 111 and the first locking groove 2112 serves as the second locking point, jointly bearing the axial tensile force of the connector and the gas pipeline 1. This dual-stage locking design can cope with multi-directional external force interference, reduce the probability of separation between the connector and the gas pipeline 1 caused by single-point locking, and ensure the stability of the airflow channel 4.

[0053] As a preferred embodiment of this implementation, such as Figure 4As shown, a first guide surface 6 is provided below the second snap-fit ​​protrusion 111, and a second guide surface 7 is provided at the top of the first snap-fit ​​protrusion 2111. The first guide surface 6 and the second guide surface 7 cooperate to guide the breathing tubing connector to extend into the air supply tubing 1.

[0054] The first guide surface 6 and the second guide surface 7 guide the connection between the connector and the gas pipeline 1. During the connection process, the first guide surface 6 and the second guide surface 7 contact and guide the first cantilever structure 21 to deform inward, allowing the connector to smoothly insert into the gas pipeline 1. In this way, the inclined surfaces of the first guide surface 6 and the second guide surface 7 achieve self-guided insertion of the connector. Even if the user applies a deviation in the pushing force, the connector can still be inserted axially into the gas pipeline 1 under the guidance of the first guide surface 6 and the second guide surface 7. Simultaneously, the first locking protrusion 2111 slides into the second locking groove 112, and the second locking protrusion 111 slides into the first locking groove 2112, significantly improving the smoothness of the connection between the connector and the gas pipeline 1. In addition, the configuration of the first guide surface 6 and the second guide surface 7 provides a relatively gentle force gradient curve for the insertion of the connector. As the connector is continuously inserted, the user can feel slight resistance, prompting the user to start alignment. As the insertion depth increases, the resistance increases linearly with a small amplitude. Finally, after the first locking protrusion and the second locking protrusion 111 are respectively engaged in the second slot 112 and the first slot 2112, the resistance drops sharply, providing the user with a clear sense of being in place and prompting the user that the connection is complete.

[0055] Preferably, the second slot 112 and the second engaging protrusion 111 extend circumferentially around the inner wall of the gas pipeline 1.

[0056] This design ensures that regardless of the angle at which the connecting pipe is inserted into the gas pipeline 1, the first locking protrusion 2111 can always be inserted into the second locking groove 112, and vice versa. This eliminates the need for precise alignment of the relative positions of the second locking groove 112 and the first locking protrusion 2111, significantly improving the ease of connection for users. Furthermore, when the gas pipeline 1 or the connecting pipe rotates due to external forces, the locking part 211 and the mating part 11 will not disengage, ensuring the airtightness of the airflow channel 4. The circumferentially continuous second locking groove 112 and the second locking protrusion 111 distribute the locking force evenly across the entire circumference, reducing the probability of stress concentration at the mating part 11.

[0057] As a preferred embodiment of this application, such as Figure 5As shown, the connector body 2 also includes a second cantilever structure 22 fixedly connected to the tube body 24. There are two second cantilever structures 22, which are located between the two first cantilever structures 21 respectively. There is an unlocking gap 23 between the first cantilever structure 21 and the second cantilever structure 22. The elastic member 3 covers the unlocking gap 23.

[0058] The second cantilever structure 22 serves to form the airflow channel 4 and provides support and vibration damping for it. The second cantilever structure 22 reduces the span between adjacent first cantilevers, thereby lowering the sealing pressure on the elastic member 3 and ensuring the stability of the airflow channel 4. The alternating arrangement of the first cantilever structure 21 and the second cantilever structure 22 forms a frame-like support structure, significantly improving the overall bending stiffness of the connector. Furthermore, the coverage of the unlocking gap 23 by the elastic member 3 physically isolates the airflow channel 4, preventing external dust, debris, and other foreign objects from entering the airflow channel 4 through the unlocking gap 23, thus helping to maintain the cleanliness of the airflow channel 4.

[0059] In a preferred embodiment of this implementation, the extension length of the second cantilever structure 22 along the circumference of the tube body 24 is greater than the extension length of the first cantilever structure 21 along the circumference of the tube body 24.

[0060] The second cantilever structure 22 primarily functions to support the airflow channel 4, therefore it extends a relatively long distance circumferentially along the pipe body 24, resulting in high structural strength and resistance to rotational deformation. The first cantilever structure 21 primarily connects to the gas pipeline 1, therefore it extends a relatively short distance circumferentially along the pipe body 24, allowing for relatively easy rotation relative to the pipe body 24. This reduces the lever arm length at the user's pressing point, enabling the same pressing force to generate a larger cantilever rotation torque, facilitating user unlocking. This division of labor avoids the conflicting requirements of high strength and high flexibility in a single cantilever, improving the overall structural reliability.

[0061] Preferably, such as Figure 7 As shown, the first cantilever structure 21 and the second cantilever structure 22 are respectively provided with mounting grooves 5 on the side of the unlocking gap 23 away from the airflow channel 4, and the elastic member 3 is partially located in the mounting grooves 5 to cover the unlocking gap 23.

[0062] The mounting groove 5 provides a physical fitting space for the elastic member 3. Its sidewalls restrict the lateral displacement of the elastic member 3 under pressing or vibration conditions. When the user repeatedly presses the pressing part 212, the local deformation of the elastic member 3 is constrained by the sidewalls of the mounting groove 5, reducing the probability of the elastic member 3 separating from the connector body 2 under external force. In addition, in the non-operating state, the elastic member 3 completely fills the mounting groove 5 and covers the unlocking gap 23, allowing the elastic member 3 to occupy less external space of the connector body 2, which helps to miniaturize the connector.

[0063] Preferably, the elastic member 3 is integrally formed with the first cantilever structure 21 and the second cantilever structure 22 by injection molding. In this way, the operation of separately manufacturing and assembling the elastic member 3 and the connector body 2 is eliminated, which helps to simplify the connector assembly process and increases the connection strength between the elastic member 3 and the connector body 2.

[0064] As a preferred embodiment of this application, such as Figure 6 As shown, the elastic member 3 includes a first sealing ring 31 located at the top of the pressing part 212. When the breathing tube connector is connected to the air supply tube 1, the first sealing ring 31 abuts against the end of the air supply tube 1.

[0065] The first sealing ring 31 abuts against the flat surface of the end of the air supply line 1 to form an end-face seal. Made of elastic material, the first sealing ring 31 can radially expand under the influence of airflow pressure fluctuations, temperature changes, and other factors, filling the gap between the end of the air supply line 1 and the connector, thus improving the sealing reliability of the airflow channel 4. During the assembly and connection of the connector and the air supply line 1, after the connector is inserted, the end of the air supply line 1 abuts against the first sealing ring 31. The first sealing ring 31 generates slight resistance when in contact with the end of the air supply line 1 during the connection process, providing clear tactile feedback to the user and helping to determine if the connection is in place. Furthermore, the elastic deformation of the first sealing ring 31 can absorb some of the insertion force when the user inserts the line, making the connection smoother and reducing the sticking sensation caused by rigid contact during connection. Moreover, as part of the elastic component 3, the first sealing ring 31 can automatically settle into position when the elastic component 3 is installed, simplifying the assembly process of the breathing line connector.

[0066] As a preferred embodiment of this application, such as Figure 2 As shown, the elastic member 3 includes a second sealing ring 32 located at the top of the snap-fit ​​part 211. The outer periphery of the second sealing ring 32 is provided with a sealing rib 321. When the breathing tube connector is connected to the air supply tube 1, the sealing rib 321 abuts against the inner wall of the air supply tube 1.

[0067] When the connector is inserted into the gas pipeline 1, the sealing rib 321 at the top of the snap-fit ​​part 211 first contacts the inner wall of the pipeline and undergoes pre-compression and deformation. After the connector and the gas pipeline 1 are connected in place, the sealing rib 321, under its own deformation, maintains a tight contact with the inner wall of the gas pipeline 1, achieving a tight fit between the connector and the gas pipeline 1. When the connector or the gas pipeline 1 is pulled against each other due to external forces or other factors, the connector has a tendency to have a slight axial displacement. The elastic deformation of the sealing rib 321 can compensate for the displacement, maintain the contact pressure of the sealing surface, and reduce the probability of air leakage in the airflow channel 4 caused by the momentary loose connection between the connector and the gas pipeline 1. In addition, when the airflow velocity is too high and airflow pulsation occurs, the elastic characteristics of the sealing rib 321 can absorb the pressure fluctuation energy, reduce high-frequency vibration wear of the sealing surface, and extend service life.

[0068] Preferably, such as Figure 2 As shown, the top of the second sealing ring 32 and the snap-fit ​​part 211 are respectively provided with a first mounting step 322 and a second mounting step 2113 that are adapted to each other, and the first mounting step 322 and the second mounting step 2113 are aligned and fastened together.

[0069] The engagement of the first mounting step 322 and the second mounting step 2113 forms a physical limit, which limits the axial or radial sliding of the second sealing ring 32 during insertion and removal. For example, when the connector is repeatedly inserted into the gas pipeline 1, the frictional resistance between the sealing rib 321 and the inner wall of the pipeline may attempt to cause the second sealing ring 32 to shift. However, the interlocking structure formed by the first mounting step 322 and the second mounting step 2113 can effectively prevent the displacement of the second sealing ring 32, ensuring that the second sealing ring 32 is tightly installed at the top of the grip section. In addition, the alignment design of the first mounting step 322 and the second mounting step 2113 also plays a positioning role in the assembly of the second sealing ring 32. When assembling the second sealing ring 32, the assembler does not need to precisely align the relative position of the second sealing ring 32 and the insertion section; they only need to align and fasten the first mounting step 322 and the second mounting step 2113, which helps to improve the assembly speed of the elastic component 3.

[0070] As a preferred embodiment of this application, such as Figure 2 As shown, the gas supply line 1 is fitted onto the breathing line connector, and the top of the tube body 24 is provided with a receiving boss 241. The portion of the elastic member 3 that wraps around the pressing part 212 abuts against the bottom wall of the gas supply line 1 and the receiving boss 241 respectively.

[0071] When the connecting pipe is connected to the gas supply line 1, the top and bottom of the elastic member 3 abut against each other, effectively sealing the airflow channel 4. Furthermore, when the connector is fully inserted, the contact between the elastic member 3 and the receiving boss 241 provides a distinct tactile feedback, allowing the user to receive a successful connection without needing to observe the connector, thus enhancing connection convenience.

[0072] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0073] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0074] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A breathing tubing connector for detachable connection with a gas delivery tubing, characterized in that: It includes a connector body and an elastic member sleeved on the connector body, wherein the connector body and the elastic member cooperate to form an airflow channel for fluid flow; The connector body includes a tube and two first cantilever structures arranged along the tube. Each first cantilever structure has a pressing part and a snap-fit ​​part. The air supply line is provided with a mating part adapted to the snap-fit ​​part. The breathing line connector is connected to the air supply line through the snap-fit ​​part and the mating part. The pressing part is connected to the tube body. The pressing part can deflect relative to the tube body under the action of external force to unlock the snap-fit ​​part and the mating part, and return to its original position after the external force is removed. The elastic member at least partially covers the pressing part.

2. The breathing tubing connector according to claim 1, characterized in that, The gas delivery tubing is fitted onto the breathing tubing connector. The snap-fit ​​portion includes a first snap-fit ​​protrusion at the top of the snap-fit ​​portion and a first snap-fit ​​groove below the first snap-fit ​​protrusion. The mating portion includes a second snap-fit ​​groove on the inner wall of the gas delivery tubing and a second snap-fit ​​protrusion below the second snap-fit ​​groove. When the gas delivery tubing is connected to the breathing tubing connector, the first snap-fit ​​protrusion engages with the second snap-fit ​​groove, and the second snap-fit ​​protrusion engages with the first snap-fit ​​groove, respectively.

3. The breathing tubing connector according to claim 2, characterized in that, A first guide surface is provided below the second snap-fit ​​protrusion, and a second guide surface is provided at the top of the first snap-fit ​​protrusion. The first guide surface and the second guide surface cooperate to guide the breathing tubing connector to extend into the air supply tubing.

4. The breathing tubing connector according to any one of claims 2 or 3, characterized in that, The second slot and the second engaging protrusion extend circumferentially around the inner wall of the gas pipeline.

5. The breathing tubing connector according to claim 1, characterized in that, The connector body also includes a second cantilever structure fixedly connected to the tube body. There are two second cantilever structures, which are respectively located between the two first cantilever structures. There is an unlocking gap between the first cantilever structure and the second cantilever structure, and the elastic member covers the unlocking gap.

6. The breathing tubing connector according to claim 5, characterized in that, The extension length of the second cantilever structure along the circumference of the tube is greater than the extension length of the first cantilever structure along the circumference of the tube.

7. The breathing tubing connector according to claim 1, characterized in that, The elastic member includes a first sealing ring located at the top of the pressing part, which abuts against the end of the air supply line when the breathing tube connector is connected to the air supply line.

8. The breathing tubing connector according to claim 1, characterized in that, The elastic member includes a second sealing ring located at the top of the snap-fit ​​portion. The outer periphery of the second sealing ring is provided with a sealing rib. When the breathing tubing connector is connected to the air supply tubing, the sealing rib abuts against the inner wall of the air supply tubing.

9. The breathing tubing connector according to claim 8, characterized in that, The second sealing ring and the top of the snap-fit ​​part are respectively provided with a first mounting step and a second mounting step that are adapted to each other, and the first mounting step and the second mounting step are aligned and fastened together.

10. The breathing tubing connector according to claim 1, characterized in that, The gas delivery line is fitted onto the breathing line connector. The top of the tube body is provided with a receiving boss. The portion of the elastic member that wraps around the pressing part abuts against the bottom wall of the gas delivery line and the receiving boss.

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