Gas circuit quick connection assembly and pneumatic comfort system

Abstract

The invention provides an air path quick-connection assembly and a pneumatic comfort system, and the air path quick-connection assembly is characterized in that a stop piece is arranged in an insertion groove of a first joint, seals a first air path in the first joint when an insertion part of a second joint is not inserted into the insertion groove, and can be opened by the insertion part when the insertion part of the second joint is inserted into the insertion groove; therefore, the first air passage of the first connector is communicated with the second air passage of the second connector, the function that ventilation is conducted during plug-in matching and the first connector is stopped to continue ventilation when plug-in is disconnected is achieved, the requirement for supplying air through an automobile body air source is met, and air source waste can be effectively prevented. Moreover, according to the gas circuit quick connection assembly, stable connection is ensured through the clamping structure of the first clamping part and the second clamping part, the problem of gas leakage caused by vibration and aging in the prior art is effectively solved, and the connection stability and the sealing reliability are further improved.

Description

Technical Field

[0001] This invention relates to the field of quick-connect pneumatic circuit technology, and more particularly to a quick-connect pneumatic circuit assembly and a pneumatic comfort system. Background Technology

[0002] Pneumatic comfort systems typically consist of an air source unit, valve modules, and air bags. The compressed air supplied by the air source unit is controlled by the valve modules to precisely inflate and deflate the air bags. In a centralized layout using the vehicle's air source, the main air pipe is led from the air source into the cabin, and then connected to the valve modules of each seat via branch air pipes. Finally, the valve modules drive the air bags on the corresponding seats through the air pipes.

[0003] To facilitate system installation and subsequent maintenance, current technologies commonly employ various pneumatic quick-connect components at pipe joints. Specifically, a specific quick-connect component connects the main air pipe to the main wiring pipes serving each seat, allowing for connection and disconnection. The use of quick-connect components undoubtedly improves the efficiency of air pipe laying and system assembly. However, in practice, it has been found that due to factors such as continuous vehicle vibration, component aging, and frequent plugging and unplugging, existing quick-connect components generally suffer from inherent defects such as loosening at the connection points and insufficient connection stability. This directly leads to air leakage during system operation, resulting in insufficient air pressure supplied to the airbags, reducing the performance and response speed of the pneumatic comfort system, and impacting the user experience. Furthermore, the connection between the main air pipe and the air wiring serving each seat, via a specific quick-connect component, should allow airflow when the component is plugged in and automatically close when unplugged to avoid wasting air and reduce the potential for shortening the lifespan of the air supply device.

[0004] Therefore, how to design a quick-connect assembly for the air circuit that provides a more stable connection, better sealing, and effectively prevents air source waste has become a pressing technical problem in this field. Summary of the Invention

[0005] To address the aforementioned issues, this invention proposes a quick-connect air circuit assembly and a pneumatic comfort system. This overcomes the inherent defects of existing quick-connect assemblies, such as easy loosening of connection parts and insufficient connection stability, and meets the connection requirements of the pneumatic comfort system with the vehicle's air source.

[0006] In a first aspect, the present invention provides a quick-connect pneumatic circuit assembly, comprising: The first connector is provided with a plug slot and a first air passage communicating with the plug slot; A stop is provided in the insertion slot and seals the first air passage; The second connector is provided with a plug portion adapted to the plug slot and a second air passage extending to the plug portion; the second connector opens the stop member when it is plugged into the first connector so that the second air passage is connected to the first air passage. The first connector is provided with a first snap-fit ​​part; the second connector is provided with a second snap-fit ​​part that corresponds to and is adapted to the first snap-fit ​​part, and when the first connector and the second connector are inserted, the first snap-fit ​​part and the second snap-fit ​​part snap-fit ​​each other.

[0007] In some embodiments, a stop buckle is also included; the stop buckle is snapped and fixedly installed in the insertion slot; The stop member is disposed in the insertion groove by the stop buckle; the stop buckle is provided with a vent hole connecting the insertion groove and the first air passage, and the stop member closes the vent hole.

[0008] In some embodiments, the stop includes a mounting ring, at least two resilient connecting arms, and a sealing valve; the mounting ring is connected to the sealing valve via the at least two resilient connecting arms. The mounting ring is fixed to the inner wall of the insertion groove by the stop buckle; the stop buckle is provided with a movable groove that connects the first air passage and the vent hole, and the sealing valve is connected to the movable groove by the at least two elastic connecting arms and seals the vent hole.

[0009] In some embodiments, the inner wall of the movable groove is provided with guide ribs, and the sealing valve can extend and retract along the guide ribs within the movable groove to close or open the vent hole, and an air guide groove is formed between two adjacent guide ribs; the guide ribs extend from the end face of the stop buckle in a direction away from the vent hole to form a limiting step that restricts the mounting ring.

[0010] In some embodiments, the side wall of the insertion slot is further provided with a fixing snap-fit ​​portion; the stop buckle is provided with a snap-fit ​​step, and the snap-fit ​​step is snap-fitted and limited on the fixing snap-fit ​​portion so that the stop buckle is fixedly installed in the insertion slot.

[0011] In some embodiments, the stop buckle is provided with a limiting groove for accommodating the insertion of the plug part, and the limiting groove connects the plug groove and the vent hole.

[0012] In some embodiments, the quick-connect assembly further includes a sealing ring, which is fitted onto the insertion portion, and the insertion portion is sealed to the insertion groove via the sealing ring.

[0013] In some embodiments, the opening of the second airway extends to the side of the insertion portion.

[0014] In some embodiments, the first snap-fit ​​portion is provided with snap-fit ​​protrusions and limiting protrusions in sequence along the mating direction of the insertion groove; the second snap-fit ​​portion includes a snap-fit ​​beam; When the second connector is inserted into the first connector, the snap-fit ​​protrusion passes through the snap-fit ​​beam and snaps into the snap-fit ​​beam when inserted into place. Pressing the first snap-fit ​​part can release the snap-fit ​​protrusion from the second snap-fit ​​part.

[0015] In a second aspect, the present invention provides a pneumatic comfort system, including the aforementioned quick-connect pneumatic circuit assembly.

[0016] The quick-connect pneumatic circuit assembly and pneumatic comfort system of the present invention have the following effects: The present invention provides a stop member in the insertion groove of the first connector. The stop member closes the first air passage in the first connector when the insertion part of the second connector is not inserted into the insertion groove, and can be opened by the insertion part when the insertion part of the second connector is inserted into the insertion groove, so that the first air passage of the first connector and the second air passage of the second connector are connected. This realizes the function of connecting and venting when the connector is plugged in and stopping the first connector from continuing to vent when the connector is disconnected, thus meeting the needs of using the vehicle body air source for air supply and effectively preventing air source waste.

[0017] Furthermore, the quick-connect assembly for the gas path of the present invention ensures a stable connection through the snap-fit ​​structure of the first snap-fit ​​part and the second snap-fit ​​part, effectively solving the gas leakage problem caused by vibration and aging in the prior art, and further improving the connection stability and sealing reliability. The first snap-fit ​​part can be released from the second snap-fit ​​part by pressing, facilitating the insertion and disassembly of the first connector and the second connector.

[0018] The pneumatic comfort system of the present invention uses the above-mentioned quick-connect pneumatic components to connect the air pipes, which helps to improve the assembly and disassembly efficiency and sealing reliability of the pneumatic comfort system.

[0019] The above description is merely an overview of the technical solutions of the embodiments of the present invention. In order to better understand the technical means of the embodiments of the present invention and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0020] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the structure of the quick-connect pneumatic circuit assembly according to an embodiment of the present invention; Figure 2 This is a cross-sectional schematic diagram of the quick-connect pneumatic assembly according to an embodiment of the present invention; Figure 3 This is an exploded view of the quick-connect pneumatic assembly according to an embodiment of the present invention; Figure 4 This is an exploded cross-sectional view of the quick-connect assembly for the gas path according to an embodiment of the present invention.

[0021] Figure label: 10. First connector; 11. Insertion groove; 12. First air passage; 13. First snap-fit ​​part; 131. Snap-fit ​​protrusion; 132. Limiting protrusion; 14. Fixing snap-fit ​​part; 20. Second connector; 21. Insertion part; 22. Second air passage; 23. Second snap-fit ​​part; 231. First connecting arm; 232. Second connecting arm; 233. Snap-fit ​​beam; 234. Snap-fit ​​groove; 24. Air passage opening; 25. Annular protrusion; 26. Annular groove; 30. Stop; 31. Mounting ring; 33. Flexible connecting arm; 32. Sealing valve; 40. Stop buckle; 41. Vent hole; 42. Guide rib; 43. Air guide groove; 44. Snap-fit ​​step; 45. Limiting groove; 46. Movable groove; 50. Sealing ring. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of the present invention can be combined with each other, and the detailed descriptions in the specific embodiments should be understood as explanations of the spirit of the present invention and should not be regarded as undue limitations on the present invention.

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the specific technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings of the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the same feature. In the description of the embodiments of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0025] Furthermore, in the embodiments of the present invention, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0026] In the embodiments of the present invention, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0027] In embodiments of the present invention, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0028] In embodiments of the present invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in embodiments of the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0029] Figures 1-4 The present invention illustrates a quick-connect assembly for a pneumatic circuit, comprising a first connector 10, a stop 30, and a second connector 20. The first connector 10 has a insertion groove 11 and a first air passage 12 communicating with the insertion groove 11; the stop 30 is disposed within the insertion groove 11 and closes the first air passage 12; the second connector 20 has an insertion portion 21 adapted to the insertion groove 11 and a second air passage 22 with an opening 24 extending to the insertion portion 21; when the second connector 20 is inserted into the first connector 10, the stop 30 is opened, allowing the second air passage 22 to communicate with the first air passage 12; wherein, the first connector 10 has a first locking portion 13; the second connector 20 has a second locking portion 23 corresponding to and adapted to the first locking portion 13, and when the first connector 10 and the second connector 20 are inserted, the first locking portion 13 and the second locking portion 23 engage with each other.

[0030] In this embodiment of the invention, the connection stability and sealing performance of the quick-connect pneumatic assembly directly affect the system's operational efficiency. Addressing the issues of air leakage caused by loosening of the connection points during continuous vehicle vibration, component aging, and frequent plugging and unplugging, as well as the waste of air source due to the inability to automatically close when unplugged, in practical applications, the first connector 10 is typically configured as a connector connected to the air source. When the first connector 10 and the second connector 20 are plugged in, the gas from the air source can flow through the first air passage 12 in the first connector 10 and the second air passage 22 in the second connector 20 to achieve air supply. The stop 30 refers to the component disposed in the plug-in slot 11 for closing the first air passage 12. It can be implemented using a valve structure with elastic loading or a ball valve structure. For example, the valve with elastic loading is pressed tightly against the cover by spring force when not plugged in, and is pushed open by the plug-in part 21 when the second connector 20 is inserted. Its main purpose is to automatically close the first air passage 12 when the second connector 20 is pulled out, preventing air source leakage. Furthermore, the first locking part 13 refers to the locking component disposed on the first connector 10; the second locking part 23 refers to the corresponding component disposed on the second connector 20. Specifically, the first locking part 13 can be an elastic latching arm, and the second locking part 23 can be a matching latching groove; or the first locking part 13 can be a rotary latch, and the second locking part 23 can be a groove; the main purpose is to ensure that when the second connector 20 is inserted into place, the first locking part and the second locking part engage, preventing the connection from loosening under vibration.

[0031] Therefore, the present invention, through the coordinated design of the stop 30 and the snap-fit ​​mechanism, automatically seals the air passage to avoid wasting air source in the unconnected state, and resists the influence of external vibration through snap-fit ​​cooperation in the connected state, thereby effectively solving the problems of air leakage and air source waste caused by loose connection.

[0032] The working principle of the quick-connect air circuit assembly is reflected in the coordinated operation of the stop 30 and the locking mechanism. In the unconnected state, the stop 30 is located in the insertion groove 11 and closes the first air passage 12, thereby automatically blocking the airflow channel and avoiding waste caused by air source leakage. When the second connector 20 is inserted into the first connector 10, the insertion part 21 is pushed along the direction of the insertion groove 11 and acts on the stop 30, causing it to deform or shift to open the first air passage 12, thereby realizing the connection between the second air passage 22 and the first air passage 12 and ensuring continuous airflow transmission. At the same time, the first locking part 13 and the second locking part 23 are locked together during the insertion process, forming a mechanical locking state. This locking state can effectively resist the effects of continuous vibration during vehicle operation, component aging, and external forces caused by frequent insertion and removal, maintaining the tightness of the connection. When it is necessary to disconnect the connection, the locking state can be released by pressing the first locking part 13 to disengage from the second locking part 23, making it easy to quickly pull out the second connector 20.

[0033] Therefore, this invention effectively prevents air leakage when the stop 30 is disconnected by automatically opening and closing the stop 30. Simultaneously, the locking mechanism of the first locking part 13 and the second locking part 23 significantly enhances the vibration resistance and structural stability of the connection, thus solving the problem of loose connections and air leakage caused by vehicle vibration and aging, avoiding air waste, and improving the operational reliability and response efficiency of the pneumatic comfort system. Furthermore, the opening and closing action of the stop 30 and the locking process of the first locking part 13 and the second locking part 23 are both directly triggered by the insertion operation, requiring no additional manual intervention, simplifying the operation process and improving the system's practicality.

[0034] In some embodiments, the quick-connect assembly of the air passage of the present invention further includes a stop buckle 40; the stop buckle 40 is snapped and fixedly installed in the insertion groove 11; the stop member 30 is disposed in the insertion groove 11 through the stop buckle 40; the stop buckle 40 is provided with a vent hole 41 that connects the insertion groove 11 and the first air passage 12, and the stop member 30 closes the vent hole 41.

[0035] In this embodiment of the invention, the stop buckle 40 refers to an independent structural component used to support and fix the stop member 30. It can be implemented using a snap-fit ​​made of elastic plastic material or a metal stamping snap-fit ​​to provide a stable installation base. The snap-fit ​​installation refers to embedding the stop buckle 40 into the inner wall of the insertion groove 11 by mechanical snap-fit. It can be implemented using an interference fit of elastic claws or a boss groove snap-fit, thereby avoiding the risk of displacement caused by vibration. The stop member 30 is set by the stop buckle 40, which means that the stop member 30 is indirectly positioned by relying on the stop buckle 40. It can be implemented by nested installation or slot limiting connection to reduce the direct impact stress on the stop member 30 during insertion and removal operations. The vent hole 41 refers to the airflow channel connecting the insertion groove 11 and the first air passage 12. It can be implemented by a circular hole array or a polygonal distribution hole to ensure the precise connection of the airflow path.

[0036] Specifically, the stop buckle 40 is fixedly installed in the insertion slot 11 by snap-fit, forming a stable support platform; the stop member 30 is indirectly set in the insertion slot 11 via the stop buckle 40; when the second connector 20 is not inserted with the first connector 10, the stop member 30 tightly seals the vent hole 41, blocking the gas leakage path; when the second connector 20 is fitted and inserted with the first connector 10, the insertion part 21 pushes the stop member 30 to move along the direction of the vent hole 41, opening the vent hole 41 to make the first air passage 12 and the second air passage 22 connected, thereby realizing reliable air passage connection; the stable positioning of the stop buckle 40 ensures that the stop member 30 always maintains accurate sealing of the vent hole 41 during vibration and insertion / removal, effectively maintaining the integrity of the air passage system.

[0037] Through the above solution, the present invention significantly improves the fixing reliability of the stop 30 in the insertion slot 11, effectively prevents the stop 30 from loosening or shifting due to vehicle vibration and frequent insertion and removal, ensures the long-term stability of the air circuit seal, avoids gas leakage and gas source waste, and thus maintains the pressure stability and execution efficiency of the pneumatic comfort system.

[0038] In some embodiments, the stop member 30 includes a mounting ring 31, at least two elastic connecting arms 33, and a sealing valve 32; the mounting ring 31 is connected to the sealing valve 32 through at least two elastic connecting arms 33; the mounting ring 31 is fixed to the inner wall of the insertion groove 11 by a stop buckle 40; the stop buckle 40 is provided with a movable groove 46 that connects the first air passage 12 and the vent hole 41, and the sealing valve 32 is connected to and extends into the movable groove 46 through at least two elastic connecting arms 33 to seal the vent hole 41.

[0039] In this embodiment of the invention, the mounting ring 31 refers to the sealing structure that fixes the stop 30, which can be implemented using a rubber or silicone ring. Its purpose is to ensure that when the stop 30 is fixed to the insertion slot 11 by the stop buckle 40, the stop buckle 40 is sealed to the first air passage 12. The elastic connecting arm 33 refers to the elastic deformation component that connects the mounting ring 31 and the sealing valve 32. It can be implemented using multiple arc-shaped arms or wave-shaped arms. Its purpose is to provide elastic restoring force and disperse stress concentration during insertion and removal. The sealing valve 32 refers to the flexible component that realizes the airtight sealing function. It can be implemented using a diaphragm made of elastic material. Its purpose is to tightly fit the edge of the vent 41 to block airflow. The movable groove 46 refers to the guide space in the stop buckle 40 that defines the movement path of the sealing valve 32. It can be designed as a cylindrical or conical groove. Its purpose is to constrain the extension and contraction trajectory of the sealing valve 32 to avoid movement deviation.

[0040] Specifically, in this embodiment of the invention, the mounting ring 31 is fixed between the inner wall of the insertion groove 11 and the stop buckle 40. The guide rib of the stop buckle 40 can protrude from the end face of the stop buckle 40 and form a limiting step with the end face of the stop buckle 40. The mounting ring 31 can be fixed by sleeve on the limiting step. The mounting ring 31 is used to form a sealed air passage between the first air passage 12 and the inside of the stop buckle 40, and to provide elastic force to the elastic connecting arm 33 by fixing the mounting ring 31. The elastic deformation characteristics of the elastic connecting arm 33 enable the sealing valve 32 to expand and contract in coordination with the insertion action of the second connector 20: when the second connector 20 is inserted, the insertion part 21 pushes the sealing valve 32, and the elastic connecting arm 33 bends under force, causing the sealing valve 32 to open the vent hole 41 to guide the air passage; when pulled out, the restoring force of the elastic connecting arm 33 drives the sealing valve 32 to reset, tightly sealing the vent hole 41 to block the airflow; the coordinated action of multiple elastic connecting arms 33 ensures the uniformity of the movement of the sealing valve 32, avoiding sealing failure caused by local deformation, while the guiding constraint of the movable groove 46 ensures that the sealing valve 32 moves smoothly along a fixed path, maintaining a tight fit with the edge of the vent hole 41.

[0041] Through the above solution, the embodiments of the present invention effectively prevent the displacement, deformation and sealing failure of the stop 30 under vehicle vibration and frequent plugging and unplugging, ensure the automatic sealing capability when the air circuit is disconnected, and significantly improve the sealing reliability and service life of the air circuit quick-connect assembly in the pneumatic comfort system.

[0042] In some embodiments, the inner wall of the movable groove 46 is provided with guide ribs 42, and the sealing valve 32 can extend and retract within the movable groove 46 along the guide ribs 42 to close or open the vent hole 41, and an air guide groove 43 is formed between two adjacent guide ribs 42; the guide ribs 42 extend from the end face of the stop buckle 40 in the direction away from the vent hole 41 to form a limiting step for the mounting ring 31.

[0043] In this embodiment of the invention, the guide rib 42 refers to the protruding structure provided on the inner wall of the movable groove 46, which is used to guide the movement of the sealing valve 32. It can be implemented by a straight strip, arc or wave-shaped protruding structure. Its purpose is to constrain the movement direction of the sealing valve 32 and avoid lateral displacement caused by external force interference. The sealing valve 32 can be understood as a flexible sealing component for closing the vent 41. It can be made of rubber or silicone material. Its purpose is to achieve reliable sealing and opening of the vent 41 through elastic deformation. The air guide groove 43 specifically refers to the gas flow gap formed between two adjacent guide ribs 42. It can be a rectangular, triangular or arc-shaped cross-sectional channel. Its purpose is to provide a uniformly distributed flow path for the gas and prevent local pressure imbalance. The limiting step can be understood as a physical blocking structure formed by the end face of the stop buckle 40 extending from the guide rib 42. It can be a flat or inclined step. Its purpose is to limit the axial displacement range of the mounting ring 31 and enhance the fit rigidity between the stop 30 and the stop buckle 40.

[0044] Specifically, the solution of this embodiment applies linear constraints to the sealing valve 32 through the guide rib 42, ensuring that its expansion and contraction within the movable groove 46 strictly follow the path defined by the guide rib 42. This avoids random offsets caused by vehicle vibration or insertion / removal operations, ensuring that the sealing valve 32 is precisely aligned with the vent hole 41 for tight sealing or smooth opening. Simultaneously, the air guide groove 43 provides a dedicated flow channel for gas while maintaining its guiding function, allowing gas to be evenly distributed and passed through along the gap. This ensures smooth airflow when the vent hole 41 is open and avoids pressure imbalance caused by gas stagnation. The limiting step formed by the extension of the guide rib 42 restricts the offset of the mounting ring 31 through physical blocking, preventing the stop 30 from shifting as a whole during continuous vibration or frequent insertion / removal. This ensures that the position and movement space of the sealing valve 32 are fixed, improving the vibration resistance of the component from a structural perspective, and ultimately achieving synergistic optimization of guiding stability and air path efficiency.

[0045] As a preferred embodiment, the specific implementation of the present invention is as follows: the guide rib 42 can be configured as four straight protrusions evenly distributed along the inner circumference of the movable groove 46, and an air guide groove 43 is formed between adjacent guide ribs 42; the guide rib 42 extends from the direction away from the vent hole 41 to the end face of the stop buckle 40 to form an annular limiting step, the mounting ring 31 is restricted on the step, and the sealing valve 32 is connected to the mounting ring 31 through the elastic connecting arm 33 and moves along the guide rib 42.

[0046] Through the above solution, the embodiments of the present invention achieve precise guidance and reliable positioning of the sealing valve 32 in the movable groove 46, effectively eliminating random offset and jamming phenomena, ensuring that the vent 41 is tightly sealed in the closed state and has smooth airflow in the open state, thereby significantly improving the sealing stability of the quick-connect assembly of the air circuit, preventing air leakage problems, and ensuring the long-term reliable operation of the system under dynamic working conditions.

[0047] In some embodiments, the side wall of the insertion groove 11 of the first connector 10 is further provided with a fixed snap-fit ​​portion 14; the stop buckle 40 is provided with a snap-fit ​​step 44, which snaps and limits the stop buckle 40 on the fixed snap-fit ​​portion 14 so that the stop buckle 40 is fixedly installed in the insertion groove 11.

[0048] In this embodiment of the invention, the fixed snap-fit ​​part 14 refers to the mechanical limiting structure provided on the side of the first connector 10, which can be implemented in the form of elastic snap-fit ​​protrusion 131, etc., with the purpose of providing a precise installation positioning reference for the stop buckle 40; the snap-fit ​​step 44 refers to the stepped structure provided on the end of the stop buckle 40 away from the stop member 30, which can be implemented in one or more generalized forms such as annular flange and L-shaped step, with the purpose of forming a reliable snap-fit ​​relationship through geometric matching, thereby constraining the installation position of the stop buckle 40.

[0049] Specifically, the present invention utilizes the locking and limiting engagement of the fixed locking part 14 and the locking step 44 to ensure that when the stop buckle 40 is pushed axially into the first connector 10 during installation, the locking step 44 and the fixed locking part 14 generate a radial interaction force. Once the locking step 44 passes the limiting edge of the fixed locking part 14, a stable mechanical lock is formed in both the axial and radial directions. This locking mechanism effectively disperses the dynamic load generated by vehicle vibration and insertion / removal operations, preventing the stop buckle 40 from axially shifting or radially deviating within the insertion groove 11. Simultaneously, it ensures that the sealing relationship between the stop member 30 and the vent 41 is not disturbed by external forces, thereby maintaining the complete sealing performance of the air circuit system.

[0050] Through the above solution, the embodiment of the present invention achieves reliable fixation of the stop buckle 40 within the first connector 10, effectively avoiding the problem of loosening and displacement of the stop buckle 40 caused by vehicle vibration or frequent insertion and removal, ensuring that the stop part 30 continuously and stably seals the vent hole 41, fundamentally eliminating the risk of air source leakage, and ensuring the stability of the air supply pressure and the operating efficiency of the pneumatic comfort system.

[0051] In some embodiments, a limiting groove 45 is provided in the stop buckle 40, and the limiting groove 45 connects the insertion groove 11 and the vent hole 41.

[0052] In this embodiment of the invention, the limiting groove 45 refers to the axial limiting structure formed inside the stop buckle 40, which can be implemented by an annular groove or a stepped groove. The purpose is to provide a precise insertion guide and axial positioning reference for the insertion part 21, and to avoid axial displacement caused by vibration. Through the above solution, the present invention forms an axial limiting fit between the limiting groove 45 provided in the stop buckle 40 and the insertion part 21, ensuring that the insertion part 21 moves along a predetermined trajectory during the insertion process. When the first locking part 13 of the first connector 10 and the second locking part 23 of the second connector 20 are locked together, the insertion part 21 is limited within the limiting groove 45 and the insertion part 21 is sealed to the limiting groove 45 by providing a sealing element.

[0053] In some embodiments, the quick-connect pneumatic assembly further includes a sealing ring 50, which is mounted on the insertion portion 21, and the insertion portion 21 is sealed to the insertion groove 11 by the sealing ring 50.

[0054] In this embodiment of the invention, the plug-in part 21 is provided with an annular protrusion 25 that matches the limiting groove 45. An annular groove 26 is provided in the annular protrusion 25 and a sealing ring 50 is built into the annular groove 26. When the plug-in part 21 is adapted to the plug-in groove 11, the plug-in part 21 extends into the limiting groove 45. The sealing ring 50 on the plug-in part 21 seals against the inner wall of the limiting groove 45 of the stop buckle 40, thereby achieving a sealed plug-in between the first connector 10 and the second connector 20, and making the first air passage 12 and the second air passage 22 on the first connector 10 sealed and connected.

[0055] Among them, the annular protrusion 25 refers to the protruding annular structure provided on the outer periphery of the insertion part 21, which can be realized by using an integrally molded rubber boss or an elastic flange supported by a metal insert, with the purpose of forming a mechanical limiting fit with the limiting groove 45; the annular groove 26 refers to the annular groove opened inside the annular protrusion 25, which can be realized by using a U-shaped cross-section groove or a trapezoidal cross-section groove, with the purpose of providing controlled deformation space for the sealing ring 50; the sealing ring 50 refers to the elastic sealing element placed in the annular groove 26, which can be realized by using an O-ring made of silicone material, with the purpose of forming an airtight interface through elastic compression.

[0056] Specifically, the annular groove 26 within the annular protrusion 25 provides a space for the sealing ring 50. When the insertion part 21 is fully inserted, the sealing ring 50 is uniformly compressed within the annular groove 26, tightly fitting the inner wall of the stop buckle 40 and effectively filling the mechanical fit gap. The elastic deformation capability of the sealing ring 50 enables it to adapt to minor displacements caused by vehicle vibrations, etc., and continuously maintain an airtight connection. Thus, in the inserted state, reliable communication between the second air passage 22 and the first air passage 12 is achieved, and in the unplugged state, the air passage is automatically closed.

[0057] Through the above technical solution, the embodiments of the present invention effectively solve the sealing defect problem at the connection between the plug-in part 21 and the stop buckle 40, maintain the airtightness of the air circuit interface under continuous vehicle vibration and frequent plugging and unplugging conditions, prevent gas from escaping in the non-working state, and ensure the continuous stability of air pressure and the reliability of response of the pneumatic system.

[0058] In some embodiments, the air passage opening 24 of the second air passage 22 extends to the side of the insertion portion 21. In this embodiment, the location of the air passage opening 24 of the second air passage 22 refers to the location of the outlet of the airflow passage. It can be provided on the end face of the insertion portion 21 and extend to the side of the insertion portion 21, or it can be directly opened on the side of the insertion portion 21, for example, in the form of a circular, elliptical, or rectangular opening. The purpose is to avoid the problem that the stop member 30 cannot be fully opened or not sealed properly during the insertion process due to the end opening, thereby improving the initial conduction reliability of the air passage connection.

[0059] Specifically, the solution of this embodiment of the invention extends the airway opening 24 of the second airway 22 to the side of the insertion part 21, so as to prevent the airway opening 24 located on the end face of the insertion part 21 from being blocked by the sealing valve 32 of the stop member 30 when the insertion part 21 pushes against the stop member 30, thereby causing the first airway 12 to be blocked and unable to communicate with the second airway 22, and the airflow cannot flow smoothly. Therefore, the setting of extending the airway opening 24 to the side of the insertion part 21 ensures that the first airway 12 can be smoothly communicated with the second airway 22 after the stop member 30 is pushed open during the insertion process of the second connector 20 and the first connector 10.

[0060] As a preferred embodiment, the specific implementation of the solution of the present invention is as follows: the air passage opening 24 of the second air passage 22 can be a circular opening or a rectangular opening, which is opened in the middle area of ​​the side of the insertion part 21, so that during the insertion process, the air passage opening 24 can be precisely aligned with the movable groove 46 of the stop member 30, thereby ensuring the smooth flow of airflow.

[0061] Through the above solution, the present invention effectively avoids the problems of unstable airway conduction and loose connection parts, reduces the risk of airflow leakage during the insertion action, thereby preventing air source waste and ensuring the continuous and stable air pressure of the pneumatic comfort system, and improving the user experience.

[0062] In some embodiments, the first snap-fit ​​portion 13 is provided with a snap-fit ​​protrusion 131 and a limiting protrusion 132 in sequence along the mating direction of the insertion groove 11; the second snap-fit ​​portion 23 includes a snap-fit ​​beam 233; When the second connector 20 is inserted into the first connector 10, the snap-fit ​​protrusion 131 passes through the snap-fit ​​beam 233 and snaps into the snap-fit ​​beam 233 when it is inserted into place. Pressing the first snap-fit ​​part 13 can release the snap-fit ​​protrusion 131 from the second snap-fit ​​part 23.

[0063] In this embodiment, the first snap-fit ​​part 13 can be understood as the core structural component that realizes the locking function of the quick-connect pneumatic assembly. It can be implemented by a cantilever beam structure molded from elastic plastic or a snap-fit ​​mechanism loaded with a metal spring. Its purpose is to provide reliable mechanical locking capability through a specific spatial layout. The snap-fit ​​protrusion 131 refers to the protruding structure provided on the first snap-fit ​​part 13 to form a rigid snap-fit ​​point. It can be one or more of the following combinations: hemispherical protrusion, trapezoidal protrusion, or wedge-shaped protrusion. Its purpose is to form an engagement surface perpendicular to the vibration direction with the second snap-fit ​​part 23 to enhance vibration resistance. The limiting protrusion 132 refers to the auxiliary positioning structure provided on the first snap-fit ​​part 13 to guide the second snap-fit ​​part 23. It can be implemented by a long strip guide rib 42, a conical guide surface, or a stepped limiting platform. Its purpose is to make the snap-fit ​​part of the second snap-fit ​​part 23 snap-fitted between the snap-fit ​​protrusion 131 and the limiting protrusion 132 after insertion.

[0064] Specifically, the present invention employs an extension direction design where the first locking portion 13 extends in the opposite direction to the insertion groove 11, allowing the locking portion to naturally avoid the insertion path during insertion, thus preventing structural interference that could lead to incomplete insertion. Simultaneously, this extension direction guides the operating area to the outside of the connector, facilitating precise finger application for unlocking. During the insertion of the second connector 20 into the first connector 10, the locking protrusion 131 first contacts the second locking portion 23 and guides the insertion direction, ensuring the second connector 20 advances along a preset trajectory. As the insertion depth increases, the locking protrusion 131 passes through the locking area of ​​the second locking portion 23. When fully inserted, the locking protrusion 131 and the second locking portion 23 form a rigid locking point, generating a locking force perpendicular to the vibration direction. During unlocking, pressing the first locking portion 13 causes elastic deformation, disengaging the locking protrusion 131 from the second locking portion 23, achieving controllable unlocking. After the snap-fit ​​protrusion 131 engages with the second snap-fit ​​portion 23, the limiting protrusion 132 prevents the second connector 20 from continuing to extend into the insertion. This through-feed mechanism forces the insertion action to reach a preset depth to form an effective snap-fit, ensuring that the snap-fit ​​action and the insertion stroke are strictly synchronized, effectively avoiding the potential for snap-fit ​​failure in some insertion states.

[0065] As a preferred embodiment, the present invention is implemented as follows: the first latching part 13 has an inverted L-shaped cantilever structure and an extension direction that is the same as the docking direction of the insertion groove 11; the latching protrusion 131 is a hemispherical protrusion disposed at the free end of the first latching part 13, and the limiting protrusion 132 is disposed at the free end of the first latching part 13 and serves as the unlocking pressing operation part of the free end; the second latching part 23 adopts a U-shaped opening groove structure. When the second connector 20 is inserted into the first connector 10, the latching protrusion 131 first embeds into the guiding area of ​​the U-shaped opening groove, and then the latching protrusion 131 passes through the bottom through hole of the U-shaped opening groove and latches onto the inner latching surface of the U-shaped opening groove when it is inserted into place. Pressing the free end of the first latching part 13 can disengage the latching protrusion 131 from the latching surface.

[0066] Through the above solution, the embodiments of the present invention effectively prevent loosening caused by accidental contact during vehicle vibration, improve the locking stability from passively relying on material elasticity to active mechanical locking, significantly enhance the vibration resistance of the air circuit connection in dynamic environments, fundamentally suppress the air circuit leakage problem caused by loose connection, and ensure the stability of the air supply pressure and response speed of the pneumatic comfort system.

[0067] In some embodiments, the first snap-fit ​​portion 13 includes an elastic snap-fit ​​arm; the second snap-fit ​​portion 23 includes a first connecting arm 231, a second connecting arm 232, and a snap-fit ​​beam 233 connected between the first connecting arm 231 and the second connecting arm 232; the first connecting arm 231 and the second connecting arm 232 are spaced apart and connected to the outside of the second connector 20, and a snap-fit ​​groove 234 is formed between the first connecting arm 231 and the second connecting arm 232 in an extension direction opposite to the mating direction of the insertion groove 11; when the second connector 20 is inserted into the first connector 10, the snap-fit ​​protrusion 131 passes through the snap-fit ​​beam 233 along the snap-fit ​​groove 234 and snaps into the snap-fit ​​beam 233 when inserted into place, and pressing the first snap-fit ​​portion 13 can release the snap-fit ​​protrusion 131 from the snap-fit ​​beam 233.

[0068] In embodiments of the present invention, the elastic snap-fit ​​arm refers to a snap-fit ​​structure with elastic deformation capability to provide elastic restoring force during the insertion process and adapt to vibration displacement; the first connecting arm 231 and the second connecting arm 232 refer to support members fixed to the outside of the second connector 20, which can be designed as a rigid arm structure arranged in parallel or at an angle to enhance the mechanical stability of the snap-fit ​​groove 234; the snap-fit ​​groove 234 refers to a guide channel jointly defined by the first connecting arm 231 and the second connecting arm 232, whose cross-sectional shape can be U-shaped, trapezoidal, or L-shaped to guide the snap-fit ​​protrusion 131 to move along a predetermined trajectory and ensure accurate snap-fit.

[0069] Specifically, the solution of this embodiment of the invention utilizes the controllable elastic deformation of the elastic locking arm during the insertion process, allowing the locking protrusion 131 to slide along the locking groove 234 and pass through the locking beam 233. Upon insertion, it automatically springs into the locking position, while the elastic restoring force continuously maintains tight contact at the locking point to resist vibration interference. The reverse extension design of the locking groove 234 guides the locking protrusion 131 to move along a stable path, avoiding the risk of misalignment. The spaced arrangement of the first connecting arm 231 and the second connecting arm 232 provides ample room for movement, ensuring that the locking protrusion 131 smoothly passes through the locking beam 233 and achieves high-strength locking. During the pressing operation, the deformation characteristics of the elastic locking arm allow the locking protrusion 131 to quickly disengage from the locking beam 233, balancing connection stability and ease of disassembly.

[0070] The above solution effectively prevents the loosening and detachment of the locking points caused by continuous vehicle vibration, ensures the reliability of the air circuit seal, and avoids the negative impact of air leakage on the air supply pressure and response performance of the pneumatic comfort system.

[0071] In some embodiments, the present invention also provides a pneumatic comfort system, which includes one or more of a pneumatic massage system, a pneumatic lumbar support system, and a pneumatic side wing support system. The pneumatic comfort system includes an air source device, an air valve module, an air bag, and the aforementioned quick-connect air circuit assembly. The air source device is fluidly connected to the air bag through the air valve module, and the air source device supplies air to the air bag. The air valve module controls the inflation and deflation of the air bag. The air pipe between the air source device and the air valve module is connected through the aforementioned quick-connect air circuit assembly. By integrating the quick-connect air circuit assembly, this system effectively addresses the impact of continuous vehicle vibration, component aging, and frequent plugging and unplugging operations on the stability of the air circuit connection, fundamentally solving the problems of loose air circuit connections, air leakage, and air source waste.

[0072] In this embodiment, the present invention combines the stop member 30 with the locking mechanism in a coordinated manner, thereby automatically sealing the air passage to prevent air source waste in the unconnected state, and resisting the influence of vibration through the snap-fit ​​engagement in the connected state, thus achieving the effect of improving connection stability and sealing performance. Specifically, the stop member 30 is disposed in the insertion groove 11 of the first connector 10. When the second connector 20 is not inserted, it seals the first air passage 12 to avoid continuous air source leakage and waste, while reducing unnecessary load on the air source device. When the second connector 20 is fitted into the first connector 10, the insertion part 21 pushes the stop member 30 to open, so that the second air passage 22 and the first air passage 12 are immediately connected, ensuring the continuity of airflow transmission and system response efficiency. At the same time, the snap-fit ​​structure design of the first snap-fit ​​part 13 and the second snap-fit ​​part 23 locks the first snap-fit ​​part to each other when they are inserted into place. The cooperation of the elastic snap-fit ​​arm and the snap-fit ​​beam 233 maintains the connection strength under dynamic conditions such as vehicle vibration, preventing air leakage caused by loosening. Therefore, this design not only achieves reliable opening and closing and stable connection of the air passage, but also significantly improves the air pressure stability, execution efficiency and overall service life of the pneumatic comfort system under complex working conditions.

[0073] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent device or equivalent process transformation made based on the content of the present invention specification and drawings, or direct or indirect application in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A quick-connect assembly for a pneumatic circuit, characterized in that, include: The first connector (10) is provided with a plug groove (11) and a first air passage (12) communicating with the plug groove (11). A stop (30) is disposed in the insertion slot (11) and closes the first air passage (12). The second connector (20) is provided with a plug portion (21) adapted to the plug slot (11) and a second air passage (22) extending from the plug portion (21) to the plug portion (21); the second connector (20) opens the stop member (30) when it is adapted to be plugged into the first connector (10), so that the second air passage (22) is connected to the first air passage (12); The first connector (10) is provided with a first snap-fit ​​part (13); the second connector (20) is provided with a second snap-fit ​​part (23) that is adapted to the first snap-fit ​​part (13), and when the first connector (10) and the second connector (20) are inserted, the first snap-fit ​​part (13) and the second snap-fit ​​part (23) snap-fit ​​each other.

2. The quick-connect assembly for the pneumatic circuit according to claim 1, characterized in that, It also includes a stop buckle (40); the stop buckle (40) is snapped and fixedly installed in the insertion groove (11); The stop (30) is disposed in the insertion groove (11) by the stop buckle (40); the stop buckle (40) is provided with a vent (41) connecting the insertion groove (11) and the first air passage (12), and the stop (30) closes the vent (41).

3. The quick-connect assembly for the pneumatic circuit according to claim 2, characterized in that, The stop (30) includes a mounting ring (31), at least two elastic connecting arms (33), and a sealing valve (32); the mounting ring (31) is connected to the sealing valve (32) through the at least two elastic connecting arms (33); The mounting ring (31) is fixed to the inner wall of the insertion groove (11) by the stop buckle (40); the stop buckle (40) is provided with a movable groove (46) that connects the first air passage (12) and the vent (41); the sealing valve (32) is connected to the movable groove (46) by at least two elastic connecting arms (33) and seals the vent (41).

4. The quick-connect assembly for the pneumatic circuit according to claim 3, characterized in that, The inner wall of the movable groove (46) is provided with guide ribs (42). The sealing valve (32) can move along the guide ribs (42) in the movable groove (46) to close or open the vent hole (41). An air guide groove (43) is formed between two adjacent guide ribs (42). The guide ribs (42) extend from the end face of the stop buckle (40) away from the vent hole (41) to form a limiting step that restricts the mounting ring (31).

5. The quick-connect assembly for the pneumatic circuit according to claim 2, characterized in that, The side wall of the insertion slot (11) is also provided with a fixed snap-fit ​​part (14); the stop buckle (40) is provided with a snap-fit ​​step (44), and the snap-fit ​​step (44) snaps and limits the fixed snap-fit ​​part (14) so ​​that the stop buckle (40) is fixedly installed in the insertion slot (11).

6. The quick-connect assembly for the pneumatic circuit according to claim 2, characterized in that, The stop buckle (40) is provided with a limiting groove (45) for accommodating the insertion part (21) and the limiting groove (45) is connected to the insertion groove (11) and the vent (41).

7. The quick-connect assembly for the pneumatic circuit according to claim 1, characterized in that, The quick-connect assembly for the gas path also includes a sealing ring (50), which is mounted on the plug part (21). The plug part (21) is sealed and plugged into the plug groove (11) through the sealing ring (50).

8. The quick-connect assembly for the pneumatic circuit according to claim 1, characterized in that, The opening (24) of the second airway (22) extends and is located on the side of the plug (21).

9. The quick-connect assembly for pneumatic circuits according to any one of claims 1-8, characterized in that, The first snap-fit ​​part (13) is provided with snap-fit ​​protrusions (131) and limiting protrusions (132) in sequence along the mating direction of the insertion groove (11); the second snap-fit ​​part (23) includes a snap-fit ​​beam (233). When the second connector (20) is inserted into the first connector (10), the snap-fit ​​protrusion (131) passes through the snap-fit ​​beam (233) and snaps into the snap-fit ​​beam (233) when inserted into place, and pressing the first snap-fit ​​part (13) can release the snap-fit ​​protrusion (131) from the snap-fit ​​beam (233).

10. A pneumatic comfort system, characterized in that, Includes the quick-connect pneumatic assembly as described in any one of claims 1-9.

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