Airbag assembly for a seat ventilation system and seat ventilation system

Abstract

The application discloses a wind bag assembly for a seat ventilation system and the seat ventilation system. The wind bag assembly according to the application comprises a wind bag body, a fan and a support, the wind bag body is internally formed with a cavity, and is provided with a ventilation opening on one side, the ventilation opening is communicated with the cavity; the fan is attached to one side of the wind bag body, and the fan is formed with a wind channel interface for connecting the ventilation opening; the support is arranged in the wind bag body and surrounds the ventilation opening; when the direction of the wind channel interface is changed, the support is deformed in shape to keep the edge of the ventilation opening in close contact with the wind channel interface. The wind bag assembly according to the application is provided with the support surrounding the ventilation opening and abutting against the inner wall of the wind bag body in the wind bag body, so that the ventilation opening area can be protruded towards the wind channel interface of the fan, gaps between the wind bag body and the fan are avoided, the sealing performance and use effect of the seat ventilation system are ensured, and the user experience of the seat ventilation system is improved.

Description

Cross-references to related applications

[0001] This application claims priority to Chinese patent application No. 202522539301.8, filed on November 28, 2025, entitled "Airbag Assembly for Seat Ventilation System and Seat Ventilation System", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of vehicle seat ventilation design, and in particular to an air bag assembly for a seat ventilation system and a seat ventilation system. Background Technology

[0003] In existing seat ventilation systems, the air sack assembly is the core component for airflow introduction and distribution. The air sack assembly typically includes an air sack body with an internal cavity and a fan for driving the airflow. A vent is located on one side of the air sack body, and the fan's outlet is connected to this vent. When the fan operates, outside air or air conditioning air from inside the vehicle is delivered into the cavity of the air sack body through the vent, and then the airflow is evenly distributed to the seat surface through the surface of the air sack body or a connected airflow guide layer.

[0004] However, the most significant challenge facing traditional air sack assemblies lies in the sealing connection between the air sack body and the fan. During actual seat use, the weight of the occupant exerts continuously varying pressure on the seat, causing the air sack assembly to undergo varying degrees of compression and displacement. Simultaneously, due to unavoidable tolerances during manufacturing and assembly, achieving ideal alignment between the fan's air duct interface and the air sack body's vent is difficult. These factors combined make it easy for gaps to form between the air duct interface and the vent, leading to airflow leakage. Airflow leakage not only significantly reduces the efficiency of the seat ventilation system, drastically decreasing the effective airflow reaching the seat surface, but also generates unpleasant wind noise, severely impacting the user experience.

[0005] To alleviate the aforementioned sealing issues, some existing solutions incorporate flexible sealing materials such as sponge at the connection between the air bag body and the fan. However, sponge materials are highly susceptible to aging, deformation, and loss of elasticity under prolonged pressure and frequent temperature and humidity changes, leading to a rapid deterioration in its sealing performance over time. The permanent compression deformation of the sponge prevents it from returning to its initial shape after the seat pressure is released, resulting in permanent gaps. Furthermore, the sealing effect of the sponge is passive; it cannot actively adapt to angular deflections or positional shifts in the air duct interface caused by stress, thus its sealing performance is not ideal in dynamic usage scenarios.

[0006] Therefore, there is an urgent need for an airbag assembly and corresponding seat ventilation system that can dynamically adapt to changes in seat pressure and assembly tolerances, maintain a reliable seal between the airbag body and the fan over a long period, and possess excellent durability.

[0007] Application content This application aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of this application is to provide an airbag assembly for a seat ventilation system. According to this application, the airbag assembly, by providing a support member surrounding the vent and abutting against the inner wall of the airbag body, allows the vent area to protrude towards the fan's air duct interface, avoiding gaps between the airbag body and the fan, ensuring the sealing performance and effectiveness of the seat ventilation system, and improving the user experience of the seat ventilation system.

[0008] This application also proposes a seat ventilation system including the aforementioned air bag assembly.

[0009] The airbag assembly according to this application includes an airbag body, a fan, and a support member. The airbag body has a cavity inside and a vent is provided on one side, which communicates with the cavity. The fan is attached to one side of the airbag body and has an air duct interface for connecting to the vent. The support member is disposed in the airbag body and surrounds the vent. When the direction of the air duct interface changes, the shape of the support member deforms to keep the edge of the vent in contact with the air duct interface.

[0010] The air bag assembly according to this application provides a support member within the air bag body. The support member surrounds the vent and abuts against the inner wall of the air bag body, allowing the vent area to protrude towards the air duct interface of the fan. This ensures that the vent can be seamlessly fitted and connected to the air duct interface, avoiding gaps between the air bag body and the fan. This ensures the sealing performance and effectiveness of the seat ventilation system and improves the user experience of the seat ventilation system.

[0011] According to one embodiment of this application, the support member includes: a base plate and an elastic member. The base plate is housed within the air bag body and fixed to the air bag body. The base plate is disposed around at least a portion of the outer periphery of the vent. The elastic member is disposed on the base plate and is adapted to be elastically deformable toward the fan direction. The elastic member is adapted to abut against the inner wall of the cavity to support the air bag body protruding toward the air duct interface direction.

[0012] According to one embodiment of this application, the elastic element is configured as a helical spring surrounding the vent.

[0013] According to one embodiment of this application, the elastic element includes a plurality of elastic sub-components, each of the elastic sub-components being configured as an arcuate member surrounding the vent; the plurality of elastic sub-components are spaced apart on the outer periphery of the vent and have a spiral lift in the direction toward the air duct interface.

[0014] According to one embodiment of this application, the elastic element is constructed as a rubber element.

[0015] According to one embodiment of this application, a through-hole adapted to the vent is formed on the base plate, and the elastic element is constructed as a rubber ring surrounding the through-hole.

[0016] According to one embodiment of this application, the rubber ring is configured such that its thickness gradually decreases in the direction toward the air duct interface.

[0017] According to one embodiment of this application, the rubber ring has a contact end face formed on the end face near the air duct interface, and the contact end face is arranged parallel to the base plate.

[0018] According to one embodiment of this application, the base plate is provided with a plurality of fixing holes spaced apart on the outer periphery of the air duct interface; the air bag assembly further includes: a connector, the connector being disposed on the air bag body and passing through the fixing holes, and the connector having a radially outwardly protruding portion, the protruding portion being adapted to abut against the base plate.

[0019] The seat ventilation system 2 according to this application is briefly described below.

[0020] The seat ventilation system 2 according to this application includes the air bag assembly 1 in the above embodiments. Since the seat ventilation system 2 according to this application is provided with the air bag assembly 1 in the above embodiments, the air bag assembly 1, by providing a support member 13 in the air bag body 11, can ensure that the edge of the ventilation port 112 is always seamlessly fitted with the air duct interface of the fan 12, which significantly improves the overall sealing performance of the seat ventilation system 2, and can provide users with a more reliable, comfortable and durable seat ventilation solution, thereby improving the user experience of the seat ventilation system 2.

[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an exploded view of the air bag assembly according to an embodiment of this application; Figure 2This is a top view of a support member according to an embodiment of this application; Figure 3 This is a side view of a support member according to an embodiment of this application; Figure 4 This is a schematic diagram of a connector according to one embodiment of this application; Figure 5 This is a schematic diagram of the structure of a support member according to another embodiment of this application; Figure 6 This is a schematic diagram of a seat ventilation system according to an embodiment of this application.

[0023] Figure label: Wind bag assembly, 1 11; 11a; 11b; 112; air bag body; non-woven fabric; 11b; 112; Fan, 12; Support component, 13; base plate, 131; through port, 1311; fixing hole, 1312; coil spring, 1321; rubber ring, 1323; contact end face, 1323a; Connector, 14; Protrusion, 141.

[0024] Seat ventilation system 2. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0026] Currently, vehicle seats typically have ventilation functions. Common ventilation systems generally consist of two parts: a fan and an air bag. However, gaps may exist when the air bag and fan are compressed and sealed, requiring a sponge for sealing. However, the sealing effect of the sponge is not ideal. After prolonged use, the sponge is prone to aging, compression deformation, and other reasons, which can lead to a decrease in sealing performance and air leakage, affecting the overall performance and effectiveness of the seat ventilation system.

[0027] The following is for reference. Figures 1-6 This application describes a wind bag assembly according to an embodiment of the present application.

[0028] The airbag assembly 1 according to this application includes an airbag body 11, a fan 12, and a support member 13. The airbag body 11 has a cavity inside, and a vent 112 is provided on one side, which communicates with the cavity. The fan is attached to one side of the airbag body 11, and an air duct interface for connecting the vent 112 is formed on the fan 12. The support member 13 is disposed inside the airbag body 11 and surrounds the vent 112. When the air duct interface is displaced or deflected due to seat pressure or assembly tolerance, the support member 13 can generate corresponding elastic deformation to dynamically keep the edge of the vent 112 in close circumferential contact with the air duct interface.

[0029] The core improvement of the airbag assembly according to the embodiments of this application lies in the support member surrounding the air vent inside the airbag body. This support member, as an active elastic sealing auxiliary structure, actively presses the bag wall in the air vent area against the fan duct interface during assembly, forming an initial gapless seal. More importantly, in the dynamic environment of actual operation of the seat ventilation system, when the airbag assembly is compressed due to occupant seating, movement, or vehicle bumps, causing positional or angular displacement of the duct interface, the support member can, through its elastic deformation capability, follow and compensate for this change in real time. It consistently pushes the edge of the air vent towards the duct interface with an elastic force, ensuring a tight fit under any operating condition. This design completely abandons the traditional approach of relying on passive sealing with sponge, fundamentally solving the problems of sealing failure and airflow leakage caused by long-term pressure aging, manufacturing tolerances, and dynamic displacement. It significantly improves the airflow transmission efficiency, operational stability, and durability of the seat ventilation system, providing users with a continuous, efficient, and quiet ventilation experience.

[0030] The support includes a base plate and an elastic member. The base plate is housed within the air bag body and fixed to it, and is disposed around at least a portion of the outer periphery of the vent. The elastic member is disposed on the base plate and is adapted to be elastically deformable toward the fan direction. The elastic member is adapted to abut against the inner wall of the cavity to support the air bag body protruding toward the air duct interface.

[0031] The base plate serves as the installation and load-bearing foundation for the entire support component, providing a stable support platform for the elastic element. Containing and fixing the base plate within the air bag body ensures that the support component will not shift or move during use, guaranteeing the reliability and consistency of its support and sealing functions. The base plate surrounds the vent, constructing a ring-shaped support frame around the airflow channel inlet. This allows the supporting force of the elastic element on the inner wall of the air bag body to be evenly and concentratedly applied to the area surrounding the vent, precisely driving the air bag body in that area to protrude and press firmly towards the air duct interface.

[0032] The elastic element is a helical spring surrounding the vent. Using a helical spring as the elastic element cleverly utilizes the excellent elasticity and resilience of the helical structure in both the axial and radial directions. A single, helical spring surrounding the vent can deform in multiple directions within three-dimensional space. When the duct interface experiences axial displacement, the helical spring can be compressed or extended; when the duct interface experiences angular deflection or radial offset, the individual helical segments of the spring can adapt to this complex displacement pattern through uneven deformation, consistently maintaining an elastic thrust that pushes the inner wall of the air bag towards the duct interface. The helical spring has a simple structure, mature technology, and long fatigue life, maintaining stable elastic characteristics through tens of thousands of pressure cycles, far superior to sponge materials. Furthermore, its helical structure itself does not obstruct airflow, having minimal impact on ventilation efficiency. This design provides a low-cost, highly reliable, and easy-to-manufacture sealing solution.

[0033] The elastic element comprises multiple elastic sub-components, each constructed as an arc-shaped component surrounding the vent. These sub-components are spaced apart on the outer periphery of the vent and have a helical lift in the direction towards the duct interface. Unlike a one-piece helical spring, this split, multi-lobed elastic structure provides more flexible and precise deformation adaptation. Multiple independent arc-shaped elastic sub-components are spaced apart on the outer periphery of the vent, each of which can be considered an independent cantilever spring. When the duct interface undergoes complex deflection, such as one side of the interface tilting up while the other side tilts down, the elastic sub-components at different positions will independently deform to varying degrees according to the changes in pressure. On the tilted side of the interface, the corresponding elastic sub-component will extend to maintain a close fit; on the tilted side, the corresponding elastic sub-component will be further compressed. This asymmetrical, multi-point independent deformation capability allows it to perfectly match various minute and irregular deflections of the duct interface, achieving a "follow-up" precision seal.

[0034] Each elastic sub-component has a helical lift in the direction facing the duct interface. This means that these curved components do not bend in a plane, but rather ascend in a spiral in three-dimensional space. This structure gives the elastic sub-component the ability to track when the interface rotates or twists. When the duct interface generates a rotational component under pressure, the elastic sub-component with helical lift can naturally follow the direction of twisting by making slight circumferential clearance and axial compensation through the guiding effect of its helical structure. This avoids shear slippage and gaps caused by twisting between the interface and the sealing surface, thus maintaining a close fit between the vent edge and the duct interface in a near-"omnidirectional self-adaptive" ideal state.

[0035] The air bag assembly 1 according to this application includes an air bag body 11 and a fan 12. The air bag body 11 is composed of non-woven fabric 11a and 3D fabric 11b. The combination of non-woven fabric 11a and 3D fabric 11b not only ensures the structural strength of the air bag body 11, but also gives the air bag body 11 a certain degree of flexibility and breathability, which can better adapt to the usage requirements of the seat ventilation system 2. A cavity is formed inside the air bag body 11 to facilitate airflow. A vent 112 communicating with the cavity is provided on one side of the air bag body 11. The vent 112 is located on the non-woven fabric 11a. A fan 12 is provided on one side of the non-woven fabric 11a. An air duct interface is formed on the fan 12 to communicate with the vent 112. The air duct interface communicates with the cavity inside the air bag body 11 through the vent 112, allowing airflow to flow between the fan 12 and the cavity. The fan 12 can provide a certain amount of power for the airflow, improve the airflow efficiency, and thus improve the ventilation effect of the seat.

[0036] In addition, a support member 13 is provided inside the air bag body 11. The support member 13 is arranged around the vent 112. The support member 13 is located in the cavity and can support or compress at least part of the air bag body 11 on the inner wall of the air bag body 11, so that the position of the vent 112 on the air bag body 11 and the air duct interface on the fan 12 always maintain a seamless fit. This can avoid gaps between the air bag body 11 and the fan 12, effectively solving the problems of unsatisfactory sealing effect and easy aging and deformation that exist in traditional ventilation systems using sponge for sealing. During seat ventilation, the air bag assembly 1 as a whole is usually moved by the pressure of the seat. When the direction of the air duct interface changes, the support member 13 can deform to adapt to the change in the direction of the air duct interface, thereby always maintaining a tight fit between the edge of the vent 112 and the air duct interface. This ensures the sealing performance and use effect of the seat ventilation system 2, improves the overall performance of the seat ventilation system 2, and extends the service life of the air bag assembly 1, providing users with a more comfortable and reliable seat ventilation experience.

[0037] According to one embodiment of this application, the support member 13 includes: a base plate 131 and an elastic member. The base plate 131 is housed within the air bag body 11 and fixed to the air bag body 11. The base plate 131 is disposed around at least a portion of the outer periphery of the vent 112. The elastic member is disposed on the base plate 131 and is adapted to be elastically deformable toward the fan 12. The elastic member is adapted to abut against the inner wall of the cavity to support the air bag body 11 protruding toward the air duct interface.

[0038] The base plate 131 is the basic support structure of the support member 13. The base plate 131 is housed inside the air bag body 11 and tightly fixed to it, providing stable support for the support member 13 as a whole, ensuring its stability and reliability during use of the air bag assembly 1. The base plate 131 is arranged around at least a portion of the outer periphery of the vent 112, enabling the support member 13 to effectively support the vent 112. This ensures that the support member 13 can effectively press and fit the air bag body 11 structure in the vent 112 area against the air duct interface, ensuring no gaps exist between the air duct interface and the vent 112, thus improving the sealing performance of the air bag assembly 1.

[0039] The elastic element is set on the base plate 131. The elastic element can elastically deform in the direction of the fan 12. The elastic deformation capability of the elastic element allows it to adaptively adjust its shape according to the change of the air duct interface direction, thereby maintaining the contact state between the elastic element and the inner wall of the cavity. The contact state between the elastic element and the inner wall of the cavity allows the air bag body 11 to protrude in the direction of the air duct interface, ensuring the tight fit between the edge of the vent 112 and the air duct interface, further enhancing the sealing performance of the seat ventilation system 2.

[0040] In practical applications, when the seat ventilation system 2 is working, the airflow generated by the fan 12 enters the cavity inside the air bag body 11 through the air duct interface. Due to the abutment between the elastic element of the support member 13 and the inner wall of the cavity, the air bag body 11 protrudes towards the air duct interface at the vent 112 position, forming a shape that matches the air duct interface. This ensures that the airflow can smoothly pass through the vent 112 and the air duct interface and enter the seat, providing users with a comfortable ventilation experience. At the same time, when the seat is subjected to pressure or the direction of the air duct interface changes, the elastic element of the support member 13 will deform to adapt to this change. The deformation capability of the elastic element allows the support member 13 to always maintain a tight fit between the edge of the vent 112 and the air duct interface, avoiding gaps caused by seat pressure or changes in the direction of the air duct interface. This not only improves the sealing performance of the seat ventilation system 2 but also extends the service life of the air bag assembly 1, providing users with a more reliable and durable seat ventilation solution.

[0041] According to one embodiment of this application, the elastic element is a coil spring 1321 surrounding the vent 112. The coil spring 1321 has good elasticity and resilience, and can adaptively adjust its shape according to changes in the direction of the air duct interface. When the direction of the air duct interface changes, the coil spring 1321 can deform accordingly to maintain contact with the inner wall of the air bag body 11, thereby ensuring that the edge of the vent 112 is always tightly fitted with the air duct interface. This effectively avoids gaps caused by seat pressure or changes in the direction of the air duct interface, improving the sealing performance of the seat ventilation system 2. Simultaneously, the elastic deformation capability of the coil spring 1321 can also buffer the pressure of the seat on the air bag assembly 1 to a certain extent, reducing the risk of damage to the air bag assembly 1 and extending its service life. Furthermore, the coil spring 1321 has a simple structure, is easy to manufacture and install, reducing the production cost of the air bag assembly 1 and improving production efficiency.

[0042] According to one embodiment of this application, the elastic element includes multiple elastic sub-components, each of which is configured as an arc-shaped component surrounding the vent 112. The multiple elastic sub-components are spaced apart on the outer periphery of the vent 112 and have a helical lift in the direction towards the air duct interface. Unlike the embodiment described above where the elastic element is configured as a helical spring 1321, the elastic element can also be configured as multiple elastic sub-components, each of which is an arc-shaped component surrounding the vent 112. These arc-shaped components are spaced apart on the outer periphery of the vent 112, forming a unique support structure. This structure not only retains the ability to elastically deform but also, through the synergistic effect of the multiple elastic sub-components, enhances the support and contact effect of the support member 13 on the air bag body 11, causing the air bag body 11 to protrude towards the air duct interface. This ensures a seamless fit between the air duct interface and the vent 112, thereby improving the sealing performance of the seat ventilation system 2.

[0043] Meanwhile, the elastic sub-components have a spiral lift in the direction of the air duct interface, which can better adapt to changes in the direction of the air duct interface. When the direction of the air duct interface changes, each elastic sub-component can deform independently to adapt to the change in the air duct interface and maintain a tight contact with the inner wall of the air bag body 11. This ensures that the edge of the vent 112 is always tightly fitted with the air duct interface, which not only improves the sealing performance of the seat ventilation system 2, but also further enhances the adaptability and durability of the air bag assembly 1, providing users with a better seat ventilation experience.

[0044] According to one embodiment of this application, the elastic element is constructed as a rubber component. The rubber component possesses good elasticity and flexibility, allowing it to adapt well to the internal space of the air bag body 11. When the elastic element is constructed as a rubber component and disposed on the base plate 131, the rubber component, due to its elastic properties, can undergo elastic deformation towards the fan 12 and tightly abut against the inner wall of the cavity of the air bag body 11. This supports the air bag body 11 protruding towards the air duct interface, ensuring a tight fit between the edge of the vent 112 and the air duct interface, effectively preventing air leakage due to gaps and improving the sealing performance of the seat ventilation system 2. Furthermore, the rubber component also possesses certain wear resistance and corrosion resistance. During long-term use of the seat ventilation system 2, it can resist the scouring of airflow and potential chemical corrosion, maintaining stable performance and preventing damage, thereby extending the service life of the support component 13 and the entire air bag assembly 1. In addition, the manufacturing cost of the rubber component is relatively low, and the processing technology is relatively mature, which to some extent reduces the production cost of the air bag assembly 1.

[0045] According to one embodiment of this application, a through-hole 1311 adapted to the vent 112 is formed on the base plate 131, and the elastic element is a rubber ring 1323 surrounding the through-hole 1311. The through-hole 1311 is directly opposite the vent 112, ensuring that the airflow flowing into the air duct body 11 from the air duct interface can enter the cavity through the through-hole 1311, avoiding obstruction of airflow at the base plate 131 and ensuring smooth airflow. A rubber ring 1323 is arranged around the through opening 1311 and tightly abuts against the inner wall of the cavity of the air bag body 11, so that the air bag body 11 protrudes towards the air duct interface at the vent 112 position, thereby ensuring that the edge of the vent 112 is tightly fitted with the air duct interface, effectively preventing air leakage and improving the sealing performance of the seat ventilation system 2. At the same time, the rubber ring 1323 can also make full use of the good elasticity and flexibility of the rubber parts, and undergo elastic deformation in the direction of the fan 12 to adapt to the support requirements of the air bag body 11 when the direction of the air duct interface changes, ensuring that the vent 112 and the air duct interface are always tightly fitted, further improving the sealing performance of the seat ventilation system 2.

[0046] According to one embodiment of this application, the rubber ring 1323 is constructed with a gradually decreasing thickness towards the air duct interface, forming a conical structure. This structure allows the rubber ring 1323 to maintain root support strength while providing better flexibility and deformation adaptability at its top contact end face 1323a, which can more effectively compensate for the deflection of the air duct interface, and also helps to reduce weight and save materials. The gradually decreasing thickness design of the rubber ring 1323 towards the air duct interface allows the rubber ring 1323 to maintain good support and sealing effects while reducing material usage to a certain extent, lowering production costs, and also reducing the weight of the entire support component 13. This is beneficial to improving the overall performance of the air bag assembly 1, providing users with a more reliable, economical, and comfortable seat ventilation experience.

[0047] According to one embodiment of this application, a contact end face 1323a is formed on the end face of the rubber ring 1323 near the air duct interface, and the contact end face 1323a is arranged parallel to the base plate 131. The design of the contact end face 1323a being parallel to the base plate 131 ensures that when the rubber ring 1323 abuts against the inner wall of the air bag body 11, the protrusion height of the air bag body 11 is consistent, ensuring a tighter fit between the edge of the vent 112 and the air duct interface, further improving the sealing performance of the air bag assembly 1. Simultaneously, the parallel arrangement of the contact end face 1323a and the base plate 131 also allows the rubber ring 1323 to maintain a more stable abutment against the inner wall of the air bag body 11 when undergoing elastic deformation, ensuring that the edge of the vent 132 is always tightly fitted against the air duct interface, thereby effectively preventing air leakage and improving the sealing performance of the seat ventilation system 2. Furthermore, the parallel arrangement of the contact end face 1323a simplifies the manufacturing process of the rubber ring 1323, reduces production costs, and improves production efficiency, providing strong support for the large-scale production and application of the air bag assembly 1.

[0048] According to one embodiment of this application, the base plate 131 is provided with a plurality of fixing holes 1312 spaced apart on the outer periphery of the air duct interface; the air bag assembly 1 further includes: a connector 14, the connector 14 is disposed on the air bag body 11 and passes through the fixing holes 1312 and the connector 14 has a protrusion 141 that protrudes outward in the radial direction, the protrusion 141 being adapted to abut against the base plate 131.

[0049] Multiple fixing holes 1312 on the base plate 131 are arranged at intervals around the outer periphery of the air duct interface, providing a stable installation position for the connector 14. The connector 14 is provided with a radially outward protrusion 141. When the connector 14 passes through the fixing hole 1312, the outward protrusion 141 can engage with the fixing hole 1312 for limiting, that is, the protrusion 141 abuts against the base plate 131, and makes the base plate 131 tend to move towards the fan 12. It can also be understood that the connector 14 can provide a force to the base plate 131 towards the fan 12, so that the support 13 can fully abut against the inner wall of the air bag body 11, and make the ventilation port 112 area on the air bag body 11 protrude towards the fan, ensuring that the edge of the ventilation port 112 fits tightly with the air duct interface, further enhancing the sealing performance of the air bag assembly 1, effectively preventing airflow leakage caused by poor sealing, creating a more comfortable seat ventilation environment for users, and improving the user experience of the seat ventilation system 2.

[0050] The seat ventilation system 2 according to this application is briefly described below.

[0051] The seat ventilation system 2 according to this application includes the air bag assembly 1 in the above embodiments. Since the seat ventilation system 2 according to this application is provided with the air bag assembly 1 in the above embodiments, the air bag assembly 1, by providing a support member 13 in the air bag body 11, can ensure that the edge of the ventilation port 112 is always seamlessly fitted with the air duct interface of the fan 12, which significantly improves the overall sealing performance of the seat ventilation system 2, and can provide users with a more reliable, comfortable and durable seat ventilation solution, thereby improving the user experience of the seat ventilation system 2.

[0052] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0053] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0054] In the description of this application, "multiple" means two or more.

[0055] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0056] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An air bag assembly for a seat ventilation system, characterized in that, include: The air bag body (11) has a cavity inside and a vent (112) is provided on one side, and the vent (112) is connected to the cavity; A fan is attached to one side of the air bag body (11), and the fan has an air duct interface for connecting the vent (112). Support member (13), which is disposed inside the air bag body (11) and surrounds the vent (112). When the direction of the air duct interface changes, the shape of the support member (13) deforms to keep the edge of the vent (112) in contact with the air duct interface; The support member (13) is elastic and can disperse stress by its own deformation to avoid stress concentration when the direction of the air duct interface changes, causing the edge of the vent (112) to deform.

2. The air bag assembly for a seat ventilation system according to claim 1, characterized in that, The support member (13) includes: A base plate (131) is housed within the air bag body (11) and fixed to the air bag body (11). The base plate (131) is arranged around at least a portion of the outer periphery of the vent (112). An elastic element is disposed on the base plate (131) and is adapted to be elastically deformable in the direction of the fan (12). The elastic element is adapted to abut against the inner wall of the cavity to support the air bag body (11) protruding in the direction of the air duct interface.

3. The air bag assembly for a seat ventilation system according to claim 2, characterized in that, The elastic element is constructed as a helical spring (1321) surrounding the vent (112).

4. The air bag assembly for a seat ventilation system according to claim 2, characterized in that, The elastic element includes a plurality of elastic sub-components, each of which is configured as an arcuate element surrounding the vent (112); The plurality of elastic sub-components are spaced apart on the outer periphery of the vent (112) and have a spiral lift in the direction toward the air duct interface.

5. The air bag assembly for a seat ventilation system according to claim 2, characterized in that, The elastic element is constructed of rubber.

6. The air bag assembly for a seat ventilation system according to claim 5, characterized in that, The base plate (131) has a through opening (1311) adapted to the vent (112), and the elastic element is constructed as a rubber ring (1323) surrounding the through opening (1311).

7. The air bag assembly for a seat ventilation system according to claim 6, characterized in that, The rubber ring (1323) is constructed such that its thickness gradually decreases in the direction toward the air duct interface.

8. The air bag assembly for a seat ventilation system according to claim 7, characterized in that, The rubber ring (1323) has a contact end face (1323a) formed on the end face near the air duct interface, and the contact end face (1323a) is arranged parallel to the base plate (131).

9. The air bag assembly for a seat ventilation system according to any one of claims 2 to 8, characterized in that, The base plate (131) is provided with a plurality of fixing holes (1312) spaced apart on the outer periphery of the air duct interface. The air bag assembly further includes a connector (14), which is disposed on the air bag body (11) and passes through the fixing hole (1312), and the connector (14) has a radially outward protrusion (141) which is adapted to abut against the base plate (131).

10. A seat ventilation system, characterized in that, Includes the air bag assembly as described in any one of claims 1-9.

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