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, and the connector body and the elastic component are matched to form an airflow channel for fluid circulation; the connector main body comprises a pipe body, and a first cantilever structure and a second cantilever structure which are arranged along the circumferential direction of the pipe body at an interval; the first cantilever structure is provided with a clamping portion at the inserting section, the air conveying pipeline is provided with a matching portion, the breathing pipeline connector is connected with the air conveying pipeline through clamping matching of the clamping portion and the matching portion, and the first cantilever structure can deflect relative to the pipe body under the action of external force so as to drive the clamping portion and the matching portion to be unlocked and return after the external force is removed. A user with weak strength can gradually finish unlocking by fully utilizing the deformation creep characteristic of the elastic component by prolonging the pressing time without instantly applying strong force; and a user with relatively strong strength can quickly trigger unlocking through brief pressing, and the flexibility and inclusiveness of operation are both considered.

Description

Technical Field

[0001] This application belongs to the technical field of respiratory therapy devices, and particularly relates to a respiratory tube connector. Background Art

[0002] Respiratory therapy devices such as ventilators and high-flow oxygen therapy devices need to safely and effectively deliver therapeutic gases to users through gas delivery tubes. In actual use, respiratory therapy devices usually come with a fixed section of gas delivery tube. To meet the requirements of different clinical scenarios, it is often necessary to dock with an external extension tube through a connector to extend the gas delivery distance or connect different respiratory masks / nasal cannulas.

[0003] However, the existing tube connection methods have many problems: First, the connection and unlocking operations between the connector and the gas delivery tube are complex. Traditional connectors mostly use rigid buckles or threaded tightening structures, and precise alignment of the buckle or multiple turns of rotation are required during installation to complete the connection, which is cumbersome. Especially in emergency situations, it may delay the treatment time. Second, many connectors usually require both hands to operate during unlocking and installation. One hand holds the gas delivery tube, and the other hand operates the buckle on the connector or controls the reverse rotation of the connector, which brings great inconvenience to users with limited mobility. In addition, to ensure a tight connection between the connector and the gas delivery tube, the connector usually has a large locking force with the gas delivery tube, and a large control force needs to be applied to control the unlocking of the connector. For some patients during postoperative recovery or elderly and frail users, it is difficult to operate the unlocking of the connector, resulting in inconvenience for users. Summary of the Invention

[0004] This application provides a respiratory tube connector to solve the technical problems that it is difficult to unlock the traditional respiratory tube connector from the gas delivery tube, and it is difficult for some users with limited mobility to operate the unlocking and connection.

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

[0006] A respiratory tube connector for detachably connecting with an air supply tube, comprising a connector body and an elastic member. The connector body and the elastic member cooperate to form an air flow channel for fluid circulation. The connector body includes a tube body, a first cantilever structure and a second cantilever structure which are arranged at intervals along the circumferential direction of the tube body. There is an unlocking gap between the first cantilever structure and the second cantilever structure. Both the first cantilever structure and the second cantilever structure include a plugging section and a holding section. The elastic member partially wraps around the outside of the holding section of the first cantilever structure and covers the unlocking gap between two adjacent holding sections. The first cantilever structure is provided with a clamping portion at the plugging section, and the air supply tube is provided with a mating portion. The respiratory tube connector is connected to the air supply tube through the clamping cooperation between the clamping portion and the mating portion. The first cantilever structure can deflect relative to the tube body under the action of an external force to drive the clamping portion to unlock from the mating portion and return to its original position after the external force is removed.

[0007] When the respiratory tube connector is connected to the air supply tube, the plugging section is located inside the air supply tube, and the elastic member covers the unlocking gap between two adjacent plugging sections.

[0008] The elastic member includes a first sealing ring located at the top of the holding section. When the respiratory tube connector is connected to the air supply tube, the first sealing ring abuts against the end of the air supply tube.

[0009] The elastic member includes a second sealing ring located at the top of the plugging section. The outer circumference of the second sealing ring is provided with a sealing rib. When the respiratory tube connector is connected to the air supply tube, the sealing rib abuts against the inner wall of the air supply tube.

[0010] The second sealing ring and the top of the plugging section are respectively provided with a first installation step and a second installation step which are adapted to be buckled in place.

[0011] The first cantilever structure and the second cantilever structure are respectively provided with installation grooves located on the side of the unlocking gap away from the air flow channel. The elastic member is partially located in the installation grooves to cover the unlocking gap.

[0012] The extension length of the second cantilever structure along the circumferential direction of the tube body is greater than that of the first cantilever structure along the circumferential direction of the tube body.

[0013] The gas transmission pipeline is sleeved on the respiratory pipeline connector. The clamping part includes a first clamping protrusion arranged at the top of the insertion section and a first clamping groove located below the first clamping protrusion. The matching part includes a second clamping groove arranged on the inner wall of the gas transmission pipeline and a second clamping protrusion located below the second clamping groove. When the gas transmission pipeline is connected to the respiratory pipeline connector, the first clamping protrusion is clamped and matched with the second clamping groove, and the second clamping protrusion is clamped and matched with the first clamping groove respectively.

[0014] A first guiding surface is arranged below the second clamping protrusion, and a second guiding surface is arranged at the top of the first clamping protrusion. The first guiding surface and the second guiding surface cooperate to guide the respiratory pipeline connector to extend into the gas transmission pipeline.

[0015] The second clamping groove and the second clamping protrusion extend circumferentially along the inner wall of the gas transmission pipeline.

[0016] The gas transmission pipeline is sleeved on the respiratory pipeline connector. A receiving boss is arranged at the top of the pipe body. The parts of the elastic member wrapping the holding section are respectively abutted against the bottom wall of the gas transmission pipeline and the receiving boss.

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

[0018] 1. The breathing tube connector of the present application includes a connector body and an elastic member. The elastic member cooperates with the connector body to form a closed air flow channel, reducing the risk of air leakage and providing a stable air flow environment for the respiratory therapy device. The connector body of the present application includes a tube body, a first cantilever structure and a second cantilever structure. Among them, the second cantilever structure functions to cooperate to form an air flow channel. The first cantilever structure is provided with a holding section and a plugging section. The user drives the movement of the plugging section by pressing the holding section of the first cantilever structure, so as to separate the engaging portion from the mating portion, thereby driving the separation of the connector from the gas delivery pipeline. When the user operates to press the holding section to unlock or connect, the elastic member first undergoes elastic deformation, and absorbs part of the pressing force during the elastic deformation process, forming a pressing force buffer, so that the user does not need to completely resist the rigid rebound force of the first cantilever structure, reducing the actual force applied by the finger. In addition, the wrapping design of the elastic member disperses the stress originally concentrated at the root of the first cantilever structure to a larger contact area, reducing the possibility of stress concentration at the root of the holding section, thereby alleviating the pressing difficulty caused by local stress concentration and further reducing the requirement for the user's pressing force. In this way, when the breathing tube connector is connected to the gas delivery pipeline, the two can be firmly connected under the engagement of the engaging portion and the mating portion. When unlocking is required, the user only needs to apply a small pressing force to drive the holding section to move relative to the tube body, thereby realizing the separation of the connector from the gas delivery pipeline. It enhances the operation convenience for the postoperative recovery group and the elderly and infirm group, and improves the user experience.

[0019] Furthermore, the flexible characteristic of the elastic member allows it to form a dynamic coupling with the first cantilever structure. When the user presses the holding section, the elastic member first deforms, and then pushes the plugging section to deform through its own resilience. This phased force conduction path makes the unlocking action smoother. Compared with the jerky feeling when the traditional rigid buckle is unhooked, the tactile feedback given to the user when the connector of the present application is unlocked is softer and more natural, which helps to improve the user experience. And due to the compressibility of the elastic member, the connector can adapt to the operating habits and force differences of different users. For example, users with weaker strength can complete the unlocking step by step by extending the pressing time and making full use of the deformation creep characteristic of the elastic member, without the need to apply a large force instantly; users with stronger strength can trigger the unlocking quickly by pressing briefly, taking into account the flexibility and inclusiveness of the operation.

[0020] 2. As a preferred embodiment of the present application, the unlocking gap provides a reserved space for the relative rotation of the first cantilever structure with respect to the pipe body, preventing the second cantilever structure from interfering with the rotation of the first cantilever structure. In the connected state of the connector and the gas transmission pipeline, the elastic member covers the unlocking gap between the insertion segments, forming a continuous and airtight wrapping layer, effectively blocking the leakage of air flow from the gap and ensuring the integrity of the air flow channel. In addition, the elastic member can form an adaptive fit with the inner wall of the gas transmission pipeline when compressed. For example, when the pipeline undergoes minor deformations due to temperature changes or external force pulling, the elastic material can compensate for the gap changes through its own deformation, avoiding seal failure problems caused by misalignment of rigid structures. Moreover, the setting of the elastic member covering the unlocking gap increases the component integration degree of the connector. While the elastic member reduces the difficulty of user pressing, it further integrates the function of sealing the unlocking gap, reducing the number of components of the connector and contributing to the optimization of the connector's structural design. For high-flow respiratory therapy devices, the air flow transported in their air flow channels usually has a relatively high velocity. The relatively fast air flow is likely to cause vibration of the first cantilever structure. The wrapped cooperation between the elastic member and the insertion segments can suppress the vibration of the first cantilever structure, reduce structural fatigue caused by air flow pulsation or mechanical vibration, extend the service life of the connector, and ensure the airtightness of the air flow channel.

[0021] 3. As a preferred embodiment of the present application, the first sealing ring abuts against the plane at the end of the gas transmission pipeline to form an end face seal, while the cooperation between the insertion segment and the inner wall of the pipeline forms a radial seal. This dual sealing mechanism can effectively cope with pressure fluctuations in different directions and reduce the probability of overall air leakage caused by the failure of a single sealing form. In addition, the first sealing ring, which is also made of elastic material, can radially expand when affected by other factors such as air flow pressure fluctuations and temperature changes, filling the gap between the end of the gas transmission pipeline and the connector and enhancing the sealing reliability of the air flow channel. When the connector is assembled and connected to the gas transmission pipeline, after the connector is inserted in place, the end of the gas transmission pipeline will abut against the first sealing ring. The first sealing ring will generate a slight resistance when contacting the end of the gas transmission pipeline during the connection process, providing clear tactile feedback to the user to help determine whether the connection is in place. Moreover, the elastic deformation of the first sealing ring can absorb part of the insertion force when the user inserts the pipeline, making the connection action smoother and reducing the jamming feeling caused by rigid contact when connecting the pipeline. Furthermore, as a part of the elastic member, the first sealing ring can automatically fall into place when installing the elastic member, simplifying the assembly process of the respiratory pipeline connector.

[0022] 4. As a preferred embodiment of the present application, when the connector is inserted into the gas pipeline, the sealing rib at the front end of the insertion section first contacts the inner wall of the pipeline and undergoes pre-compression, generating a certain deformation. When the connector is fully connected to the gas pipeline, the sealing rib remains in close contact with the inner wall of the gas pipeline under the action of its own deformation, achieving a tight fit between the connector and the gas pipeline. When the connector or the gas pipeline is pulled on each other due to external forces or other factors, the connector has a tendency of slight axial displacement. The elastic deformation of the sealing rib can compensate for the displacement amount, maintain the contact pressure of the sealing surface, and reduce the probability of air leakage caused by the instantaneous loose connection between the connector and the gas pipeline. In addition, when the air flow velocity is too large and air flow pulsation occurs, the elastic characteristics of the sealing rib can absorb the pressure fluctuation energy, reduce the high-frequency vibration wear of the sealing surface, and extend the service life.

[0023] 5. As a preferred embodiment of the present application, the snap-fit of the first installation step and the second installation step forms a physical limit, and the second sealing ring plays a limiting role by sliding axially or radially during the plugging and unplugging process. For example, when the connector is repeatedly inserted into the gas pipeline, the frictional resistance between the sealing rib and the inner wall of the pipeline may attempt to drive the second sealing ring to shift. However, the interlocking structure formed by the cooperation of the first installation step and the second installation step can effectively prevent the displacement of the second sealing ring, ensuring that the second sealing ring is tightly installed at the top of the holding section. In addition, the alignment design of the first installation step and the second installation step also plays a positioning role in the assembly of the second sealing ring. When assembling the second sealing ring, the assembler does not need to accurately align the relative positions of the second sealing ring and the insertion section. It is only necessary to align and snap the first installation step and the second installation step, which helps to improve the assembly rate of the elastic component.

[0024] 6. As a preferred embodiment of the present application, the installation groove provides a physical fitting space for the elastic component, and its side walls limit the lateral displacement of the elastic component under pressing or vibrating environments. When the user repeatedly presses the holding section, the local deformation of the elastic component will be restricted by the side walls of the installation groove, reducing the probability of the elastic component separating and dislocating from the connector body under external forces. In addition, in the non-operating state, the elastic component completely fills the installation groove and covers the unlocking gap, enabling the elastic component to occupy a relatively small external space of the connector body, which helps to miniaturize the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application.

[0026] In the drawings:

[0027] Figure 1This is a schematic diagram of the structure of the gas transmission pipeline and the breathing pipeline connector in one embodiment of the present application;

[0028] Figure 2 A front view of a connector body according to an embodiment of the present application;

[0029] Figure 3 An exploded view of a breathing circuit connector according to one embodiment of the present application;

[0030] Figure 4 A cross-sectional view of a breathing circuit connector according to one embodiment of the present application;

[0031] Figure 5 A cross-sectional view of a connector of a gas delivery pipeline and a breathing pipeline in one embodiment of the present application;

[0032] Figure 6 for Figure 5 A magnified view of part A;

[0033] Figure 7 This is a schematic structural diagram of a connector body according to one embodiment of the present application.

[0034] List of parts and reference numerals:

[0035] 1 gas delivery pipeline, 11 matching portion, 111 second clamping protrusion, 112 second clamping groove;

[0036] 2 connector body, 21 first cantilever structure, 211 clamping portion, 2111 first clamping protrusion, 2112 first clamping groove, 22 second cantilever structure, 23 unlocking gap, 24 tube body, 241 receiving boss;

[0037] 3 elastic member, 31 first sealing ring, 32 second sealing ring, 321 sealing rib, 322 first installation step;

[0038] 4 air flow channels;

[0039] 5 plug-in section, 51 second installation step;

[0040] 6 grip section;

[0041] 7. Installation groove;

[0042] 8 a first guide surface;

[0043] 9. Second guide surface. DETAILED DESCRIPTION

[0044] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0045] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application may be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below. It should be noted that, without conflict, the embodiments of the present application and the features in each embodiment may be combined with each other.

[0046] In addition, in the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application.

[0047] In the present application, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed broadly. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application may be understood according to specific circumstances.

[0048] In the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0049] Such as Figures 1 to 6As shown in the figure, a respiratory tube connector is used for detachably connecting with a gas supply tube 1, and includes a connector body 2 and an elastic member 3. The connector body 2 and the elastic member 3 cooperate to form an air flow channel 4 for fluid circulation; the connector body 2 includes a tube body 24 and a first cantilever structure 21 and a second cantilever structure 22 arranged at intervals along the circumferential direction of the tube body 24. There is an unlocking gap 23 between the first cantilever structure 21 and the second cantilever structure 22. Both the first cantilever structure 21 and the second cantilever structure 22 include a plugging section 5 and a holding section 6. The elastic member 3 partially wraps around the outside of the holding section 6 of the first cantilever structure 21 and covers the unlocking gap 23 between adjacent two holding sections 6; the first cantilever structure 21 is provided with a clamping portion 211 at the plugging section 5, and the gas supply tube 1 is provided with a mating portion 11. The respiratory tube connector is connected with the gas supply tube 1 through the clamping cooperation between the clamping portion 211 and the mating portion 11. The first cantilever structure 21 can deflect relative to the tube body 24 under the action of an external force to drive the clamping portion 211 to unlock from the mating portion 11 and return to its original position after the external force is removed.

[0050] The respiratory tube connector of the present 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 air flow channel 4, reducing the risk of air leakage and providing a stable air flow environment for respiratory treatment equipment. Moreover, the connector body 2 of the present application includes a tube body 24, a first cantilever structure 21 and a second cantilever structure 22. Among them, the second cantilever structure 22 functions to cooperate to form the air flow channel 4. The first cantilever structure 21 is provided with a holding section 6 and a plugging section 5. The user presses the holding section 6 of the first cantilever structure 21 to drive the movement of the plugging section 5, so as to realize the separation of the clamping portion 211 and the mating portion 11, and drive the separation of the connector from the gas supply tube 1. When the user operates to press the holding section 6 to unlock or connect, the elastic member 3 first undergoes elastic deformation, and absorbs part of the pressing force during the elastic deformation process, forming a pressing force buffer, so that the user does not need to completely resist the rigid rebound force of the first cantilever structure 21, reducing the actual force applied by the finger. In addition, the wrapping design of the elastic member 3 disperses the stress originally concentrated at the root of the first cantilever structure 21 to a larger contact area, reducing the possibility of stress concentration at the root of the holding section 6, thereby alleviating the pressing difficulty caused by local stress concentration and further reducing the requirement for the user's pressing force. In this way, when the respiratory tube connector is connected to the gas supply tube 1, the two can be firmly connected under the clamping action of the clamping portion 211 and the mating portion 11. When unlocking is required, the user only needs a small pressing force to drive the holding section 6 to move relative to the tube body 24, so as to realize the separation of the connector from the gas supply tube 1. It enhances the operation convenience for the postoperative recovery group and the elderly and infirm group, and improves the user experience.

[0051] Furthermore, the flexible characteristics of the elastic member 3 allow it to form a dynamic coupling with the first cantilever structure 21. When the user presses the holding section 6, the elastic member 3 deforms first, and then drives the insertion section 5 to deform through its own resilience. This staged force conduction path makes the unlocking action smoother. Compared with the jamming feeling when the traditional rigid buckle is decoupled, the connector of the present application gives a softer and more natural tactile feedback to the user when unlocking, which helps to improve the user experience. And due to the compressibility of the elastic member 3, the connector can adapt to different user operation habits and force differences. For example, a user with weaker strength can gradually complete the unlocking by extending the pressing time and making full use of the deformation creep characteristics of the elastic member 3, without the need to apply a large force instantaneously; a user with stronger strength can quickly trigger the unlocking by pressing briefly, taking into account the flexibility and inclusiveness of the operation.

[0052] Preferably, the elastic member 3 is provided with a tactile protrusion at the part corresponding to the holding section 6 of the first cantilever structure 21. The tactile protrusion can prompt the user of the holding and pressing position and give good pressing feedback.

[0053] The present application does not limit the relative positional relationship between the gas pipeline 1 and the respiratory pipeline connector, and any of the following implementation manners can be adopted:

[0054] Embodiment 1: As Figure 3 、 Figure 5 shown, when the respiratory pipeline connector is connected to the gas pipeline 1, the insertion section 5 is located inside the gas pipeline 1, and the elastic member 3 covers the unlocking gap 23 between two adjacent insertion sections 5.

[0055] The setting of the unlocking gap 23 provides a reserved space for the relative rotation of the first cantilever structure 21 with respect to the pipe body 24, preventing the second cantilever structure 22 from interfering with the rotation of the first cantilever structure 21. In the connection state of the connector and the gas transmission pipeline 1, the elastic member 3 covers the unlocking gap 23 between the insertion segments 5, forming a continuous and airtight wrapping layer, effectively blocking the leakage of air flow from the gap and ensuring the integrity of the air flow channel 4. In addition, the elastic member 3 can form an adaptive fit with the inner wall of the gas transmission pipeline 1 when compressed. For example, when the pipeline undergoes minor deformations due to temperature changes or external force pulling, the elastic material can compensate for the gap changes through its own deformation, avoiding seal failure problems caused by misalignment of rigid structures. Moreover, the setting of the elastic member 3 covering the unlocking gap 23 increases the component integration degree of the connector, enabling the elastic member 3 to further integrate the function of sealing the unlocking gap 23 while reducing the difficulty of user pressing, reducing the number of components of the connector, and contributing to the optimization of the connector's structural design. For high-flow respiratory therapy devices, the air flow conveyed in the air flow channel 4 usually has a relatively high flow rate, and the relatively high flow rate of the air flow easily causes vibration of the first cantilever structure 21. The wrapped cooperation between the elastic member 3 and the insertion segment 5 can suppress the vibration of the first cantilever structure 21, reduce structural fatigue caused by air flow pulsation or mechanical vibration, extend the service life of the connector, and ensure the airtightness of the air flow channel 4.

[0056] Embodiment 2: When the respiratory pipeline connector is connected to the gas transmission pipeline, the respiratory pipeline connector is sleeved outside the gas transmission pipeline, the mating part is located on the outer side of the pipe wall of the gas transmission pipeline, and the clamping part is located inside the insertion segment.

[0057] As a preferred embodiment of the present application, as Figure 2 、 Figure 3 shown, the elastic member 3 includes a first sealing ring 31 located at the top of the holding section 6. When the respiratory pipeline connector is connected to the gas transmission pipeline 1, the first sealing ring 31 abuts against the end of the gas transmission pipeline 1.

[0058] The first sealing ring 31 abuts against the plane at the end of the gas pipeline 1 to form an end face seal, and the insertion section 5 cooperates with the inner wall of the gas pipeline 1 to form a radial seal. This dual-sealing mechanism can effectively cope with pressure fluctuations in different directions and reduce the probability of overall air leakage caused by the failure of a single sealing form. In addition, the first sealing ring 31, which is also made of an elastic material, can expand radially when affected by other factors such as air flow pressure fluctuations and temperature changes, filling the gap between the end of the gas pipeline 1 and the connector, and improving the sealing reliability of the air flow channel 4. When assembling and connecting the connector and the gas pipeline 1, when the connector is inserted in place, the end of the gas pipeline 1 will abut against the first sealing ring 31. The first sealing ring 31 will generate a slight resistance when contacting the end of the gas pipeline 1 during the connection process, providing clear tactile feedback to the user to help determine whether the connection is in place. Moreover, the elastic deformation of the first sealing ring 31 can absorb part of the insertion force when the user inserts the pipeline, making the connection action smoother and reducing the jamming feeling caused by rigid contact when connecting the pipeline. Furthermore, as part of the elastic member 3, the first sealing ring 31 can be automatically positioned when installing the elastic member 3, simplifying the assembly process of the breathing pipeline connector.

[0059] As a preferred embodiment of the present application, as Figure 2 , Figure 3 shown, the elastic member 3 includes a second sealing ring 32 located at the top of the insertion section 5. The outer periphery of the second sealing ring 32 is provided with a sealing rib 321. When the breathing pipeline connector is connected to the gas pipeline 1, the sealing rib 321 abuts against the inner wall of the gas pipeline 1.

[0060] When the connector is inserted into the gas pipeline 1, the sealing rib 321 at the front end of the insertion section 5 first contacts the inner wall of the pipeline and undergoes pre-compression, and generates a certain deformation. When the connector is connected to the gas pipeline 1 in place, the sealing rib 321 remains in close contact with the inner wall of the gas pipeline 1 under the action of its own deformation, realizing the close 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 force or other factors, the connector has a tendency of slight axial displacement. The elastic deformation of the sealing rib 321 can compensate for the displacement amount, maintain the contact pressure of the sealing surface, and reduce the probability of air leakage in the air flow channel 4 caused by the instantaneous loose connection between the connector and the gas pipeline 1. In addition, when the air flow velocity is too large and air flow pulsation occurs, the elastic characteristics of the sealing rib 321 can absorb the pressure fluctuation energy, reduce the high-frequency vibration wear of the sealing surface, and extend the service life.

[0061] Preferably, the number of the sealing ribs 321 is multiple, and the multiple sealing ribs 321 are vertically arranged at intervals on the outer side of the second sealing ring 32. The multiple sealing ribs 321 can cooperate to form a stepped sealing structure. When the connector is inserted into the gas pipeline 1, the front sealing rib 321 first contacts the inner wall of the gas pipeline 1 and undergoes pre-compression, and the subsequent sealing ribs 321 are deformed in sequence to achieve a progressive sealing effect and improve the sealing performance of the sealing ribs 321.

[0062] As a preferred embodiment of this embodiment, as Figure 4 shown, a first installation step 322 and a second installation step 51 are respectively provided at the top of the second sealing ring 32 and the insertion section 5, and the first installation step 322 and the second installation step 51 are buckled in place.

[0063] The buckling of the first installation step 322 and the second installation step 51 forms a physical limit, and the second sealing ring 32 plays a limiting role when sliding axially or radially during the insertion and extraction process. 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 drive the second sealing ring 32 to shift, while the interlocking structure formed by the cooperation of the first installation step 322 and the second installation step 51 can effectively prevent the displacement of the second sealing ring 32 and ensure that the second sealing ring 32 is tightly installed at the top of the holding section 6. In addition, the alignment design of the first installation step 322 and the second installation step 51 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 accurately align the relative positions of the second sealing ring 32 and the insertion section 5, and only needs to buckle the first installation step 322 and the second installation step 51 in place, which helps to improve the assembly rate of the elastic member 3.

[0064] As a preferred embodiment of the present application, as Figure 7 shown, the first cantilever structure 21 and the second cantilever structure 22 are respectively provided with installation grooves 7 located on the side of the unlocking gap 23 away from the air flow channel 4, and a part of the elastic member 3 is located in the installation groove 7 to cover the unlocking gap 23.

[0065] The setting of the installation groove 7 provides a physical fitting space for the elastic member 3, and its side walls limit the lateral displacement of the elastic member 3 in a pressing or vibrating environment. When the user repeatedly presses the holding section 6, the local deformation of the elastic member 3 will be restricted by the side walls of the installation groove 7, reducing the probability of the elastic member 3 separating and dislocating from the connector body 2 under the action of external force. In addition, in the non-operating state, the elastic member 3 completely fills the installation groove 7 and covers the unlocking gap 23, so that the elastic member 3 can occupy a smaller external space of the connector body 2, which helps to miniaturize the connector.

[0066] 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 assembly process of the connector and at the same time increases the connection strength between the elastic member 3 and the connector body 2.

[0067] As a preferred embodiment of this embodiment, the circumferential extension length of the second cantilever structure 22 along the tube body 24 is greater than that of the first cantilever structure 21 along the tube body 24.

[0068] The second cantilever structure 22 mainly functions to cooperate in forming the air flow channel 4. Therefore, it has a longer circumferential extension length along the tube body 24, and its structural strength is higher, making it not easy to rotate and deform. The first cantilever structure 21 mainly functions to connect with the gas transmission pipeline 1. Therefore, it has a shorter circumferential extension length along the tube body 24 and can relatively easily rotate relative to the tube body 24, reducing the lever arm length of the user's pressing point, so that the same pressing force can generate a greater cantilever rotation torque, facilitating the user to press and unlock. This division of labor design avoids the contradictory requirements of a single cantilever needing to simultaneously meet high strength and high flexibility, and improves the reliability of the overall structure.

[0069] Preferably, the first cantilever structure 21 and the second cantilever structure 22 are respectively integrally formed with the tube body 24, and the first cantilever structure 21 and the second cantilever structure 22 are respectively hinged to the tube body 24.

[0070] Preferably, the number of the first cantilever structures 21 is two, and the number of the second cantilever structures 22 is two. The two first cantilever structures 21 are arranged in alignment, and the two second cantilever structures 22 are arranged in alignment. In this way, the two holding sections 6 are also arranged in alignment, enabling the user to apply forces to the two holding sections 6 with two fingers respectively to pull out or insert the connector when operating the connector to unlock, freeing the user's other hand and improving the user's operation convenience.

[0071] As a preferred embodiment of the present application, as Figure 5 、 Figure 6 shown, the gas transmission pipeline 1 is sleeved on the respiratory pipeline connector. The clamping portion 211 includes a first clamping protrusion 2111 provided at the top of the insertion section 5 and a first clamping groove 2112 located below the first clamping protrusion 2111. The matching portion 11 includes a second clamping groove 112 provided on the inner wall of the gas transmission pipeline 1 and a second clamping protrusion 111 located below the second clamping groove 112. When the gas transmission pipeline 1 is connected to the respiratory pipeline connector, the first clamping protrusion 2111 and the second clamping groove 112, and the second clamping protrusion 111 and the first clamping groove 2112 are respectively clamped and matched.

[0072] The cooperation between the first engaging protrusion 2111 and the second engaging groove 112 forms the first locking point, and the cooperation between the second engaging protrusion 111 and the first engaging groove 2112 serves as the second locking point, jointly bearing the axial tensile force of the connector and the gas transmission pipeline 1. This dual-stage locking design can cope with external force interference in multiple directions, reduce the probability of separation between the connector and the gas transmission pipeline 1 caused by single-point locking, and ensure the stability of the gas flow channel 4.

[0073] As a preferred embodiment under this implementation manner, as Figure 6 shown, a first guiding surface 8 is provided below the second engaging protrusion 111, and a second guiding surface 9 is provided at the top of the first engaging protrusion 2111. The first guiding surface 8 and the second guiding surface 9 cooperate to guide the respiratory pipeline connector into the gas transmission pipeline 1.

[0074] The inclined surface cooperation between the first guiding surface 8 and the second guiding surface 9 can convert the axial insertion force of the connector into a radial expansion force, which plays a guiding role in the insertion of the connector. It enables the first engaging protrusion 2111 and the second engaging protrusion 111 to automatically slide into the first engaging groove 2112 and the second engaging groove 112 respectively, and the user can complete the connection without precise alignment, especially suitable for quick assembly in emergency situations.

[0075] Preferably, the second engaging groove 112 and the second engaging protrusion 111 extend circumferentially around the inner wall of the gas transmission pipeline 1.

[0076] With this setting, no matter at what angle the connecting pipe is inserted into the gas transmission pipeline 1, the first engaging protrusion 2111 can be inserted into the first engaging groove 2112, and the second engaging protrusion 111 can be inserted into the second engaging groove 112. There is no need to accurately align the relative positions of the first engaging groove 2112 and the first engaging protrusion 2111, and the second engaging groove 112 and the second engaging protrusion 111, which greatly improves the convenience of the user's plugging. In addition, when the gas transmission pipeline 1 or the connecting pipe rotates due to external force, the engaging part 211 and the cooperating part 11 will not become dislocated, ensuring the tightness of the gas flow channel 4. And the circumferentially continuous second engaging groove 112 and the second engaging protrusion 111 evenly distribute the locking force over the entire circumference, reducing the probability of stress concentration in the cooperating part 11.

[0077] As a preferred implementation manner of the present application, as Figures 3 to 5 shown, the gas transmission pipeline 1 is sleeved on the respiratory pipeline connector. A receiving boss 241 is provided at the top of the pipe body 24, and the elastic member 3 wrapped around a part of the holding section 6 abuts against the bottom wall of the gas transmission pipeline 1 and the receiving boss 241 respectively.

[0078] When the connecting pipe is in a connected state with the gas transmission pipeline 1, the top and bottom of the elastic member 3 are respectively abutted, which can achieve good sealing of the gas flow channel 4. And when the connector is inserted in place, the contact between the elastic member 3 and the receiving boss 241 will be accompanied by an obvious sense of being in place due to the abutment of the elastic member 3, providing clear tactile feedback for the user. The user can obtain a connection success prompt through the tactile feedback without observing the connector, improving the connection convenience for the user.

[0079] What is not described in this application can be realized by adopting or referring to the existing technologies.

[0080] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.

[0081] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A respiratory tube connector for detachably connecting with an air delivery tube, characterized in that: It includes a connector body and an elastic member, and the connector body and the elastic member cooperate to form an air flow channel for fluid to flow through; The connector body includes a tube body, and a first cantilever structure and a second cantilever structure arranged at intervals along the circumferential direction of the tube body. There is an unlocking gap between the first cantilever structure and the second cantilever structure. Both the first cantilever structure and the second cantilever structure include a plugging section and a holding section. The elastic member partially wraps around the outside of the holding section of the first cantilever structure and covers the unlocking gap between two adjacent holding sections; The first cantilever structure is provided with a clamping portion at the plugging section. The air delivery tube is provided with a mating portion. The respiratory tube connector is connected to the air delivery tube through the clamping cooperation between the clamping portion and the mating portion. The first cantilever structure can deflect relative to the tube body under the action of an external force to drive the clamping portion to unlock from the mating portion and return to its original position after the external force is removed.

2. The respiratory tube connector according to claim 1, characterized in that When the respiratory tube connector is connected to the air delivery tube, the plugging section is located inside the air delivery tube, and the elastic member covers the unlocking gap between two adjacent plugging sections.

3. The respiratory tube connector according to claim 1, characterized in that The elastic member includes a first sealing ring at the top of the holding section. When the respiratory tube connector is connected to the air delivery tube, the first sealing ring abuts against the end of the air delivery tube.

4. The respiratory tube connector according to claim 1, characterized in that The elastic member includes a second sealing ring at the top of the plugging section. A sealing rib is provided on the outer circumference of the second sealing ring. When the respiratory tube connector is connected to the air delivery tube, the sealing rib abuts against the inner wall of the air delivery tube.

5. The respiratory tube connector according to claim 4, characterized in that The second sealing ring and the top of the plugging section are respectively provided with a first installation step and a second installation step that are adapted to each other, and the first installation step and the second installation step are buckled in place.

6. The respiratory tube connector according to claim 1, characterized in that The first cantilever structure and the second cantilever structure are respectively provided with installation grooves on the side of the unlocking gap away from the air flow channel. The elastic member is partially located in the installation grooves to cover the unlocking gap.

7. The respiratory tube connector according to claim 6, characterized in that The extension length of the second cantilever structure along the circumferential direction of the tube body is greater than the extension length of the first cantilever structure along the circumferential direction of the tube body.

8. The respiratory tube connector according to claim 1, characterized in that The gas supply pipeline is sleeved on the respiratory pipeline connector. The clamping part includes a first clamping protrusion arranged at the top of the insertion section and a first clamping groove located below the first clamping protrusion. The matching part includes a second clamping groove arranged on the inner wall of the gas supply pipeline and a second clamping protrusion located below the second clamping groove. When the gas supply pipeline is connected to the respiratory pipeline connector, the first clamping protrusion is clamped and matched with the second clamping groove, and the second clamping protrusion is clamped and matched with the first clamping groove respectively.

9. The respiratory pipeline connector according to claim 8, wherein a first guiding surface is arranged below the second clamping protrusion, and a second guiding surface is arranged at the top of the first clamping protrusion. The first guiding surface and the second guiding surface cooperate to guide the respiratory pipeline connector to extend into the gas supply pipeline.

10. The respiratory pipeline connector according to any one of claims 8 or 9, wherein the second clamping groove and the second clamping protrusion extend circumferentially along the inner wall of the gas supply pipeline.

11. The respiratory pipeline connector according to claim 1, wherein the gas supply pipeline is sleeved on the respiratory pipeline connector. A receiving boss is arranged at the top of the pipe body. The parts of the elastic member wrapping the holding section are respectively abutted against the bottom wall of the gas supply pipeline and the receiving boss.

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