A car seat ventilation and support function enhancement system and car seat

By incorporating ventilation components and support structures into the seat frame, the limitations of existing seat ventilation and lumbar support systems are addressed, resulting in increased ventilation volume and lumbar support height, thus enhancing the overall performance of the seat.

CN224392419UActive Publication Date: 2026-06-23HEBEI AEW AUTO PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HEBEI AEW AUTO PARTS CO LTD
Filing Date
2025-06-30
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing car seat ventilation and lumbar support systems have limitations in ventilation volume and support height, making it difficult to achieve overall performance improvement.

Method used

A ventilation assembly and a support structure are installed on the seat frame. The ventilation assembly contains the support structure and the reinforcing airbag. The support structure forms a flow channel in different states, which works with the lumbar support airbag to achieve gas flow and support functions. The reinforcing airbag works in conjunction with the lumbar support airbag to improve ventilation and lumbar support height.

Benefits of technology

By incorporating a support structure and reinforcing airbags within the ventilation components, the ventilation volume of the ventilation system and the support height of the lumbar support system are increased, thereby enhancing the overall performance of the seat.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224392419U_ABST
Patent Text Reader

Abstract

The application provides a car seat ventilation and support function enhancement system and a car seat. The enhancement system is arranged on a seat framework of the car seat and comprises a seat foam. A plurality of first ventilation holes are formed in the seat foam. A ventilation assembly is arranged on the seat foam. A plurality of second ventilation holes corresponding to the first ventilation holes are formed in a side of the ventilation assembly close to the seat foam. A connecting hole is further arranged on the ventilation assembly. A fan body is arranged at the connecting hole. A support structure is further arranged in the ventilation assembly. The support structure has a first state and a second state. In the first state, a first protruding part is formed on the seat foam towards a side close to a human body. In the second state, the first protruding part disappears. The support structure is arranged to form a flow guide cavity in the ventilation assembly. The gas flows fully in the flow guide cavity, balances the pressure of the ventilation holes, and increases the overall ventilation volume. Meanwhile, the first protruding part formed on the seat foam can cooperate with an original waist support system to realize a higher waist support height.
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Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to an enhanced system for ventilation and support of automotive seats and an automotive seat. Background Technology

[0002] With the progress of the times and social development, the functions that seats need to embody are increasing, and the functional products that need to be arranged are becoming more and more abundant. Nowadays, most car seats have ventilation and lumbar support functions. With the advancement of technology, passengers have higher and higher requirements for the overall performance of ventilation and support functions. However, the ventilation volume of existing ventilation systems and the support height of lumbar support systems have certain limitations. How to improve the overall performance of ventilation and lumbar support systems is an urgent problem to be solved. Utility Model Content

[0003] The purpose of this application is to address the above-mentioned problems by providing a system for enhancing the ventilation and support functions of an automotive seat, as well as an automotive seat.

[0004] In a first aspect, this application provides a vehicle seat ventilation and support enhancement system, disposed on the seat frame of a vehicle seat, the enhancement system comprising:

[0005] A seat foam, which covers the seat frame, and has multiple first ventilation holes.

[0006] A ventilation assembly is disposed on the seat foam. The ventilation assembly has multiple second ventilation holes on the side near the seat foam, and the second ventilation holes correspond one-to-one with and are connected to the first ventilation holes. The ventilation assembly has a connection hole on the side away from the seat foam, and a fan body is disposed at the connection hole. The ventilation assembly also has a support structure inside.

[0007] The support structure has a first state and a second state. When it is in the first state, a first protrusion is formed on the seat foam towards the side closer to the human body. When it is in the second state, the first protrusion disappears.

[0008] According to certain embodiments of the present application, the technical solutions provided are as follows:

[0009] The support structure is a reinforced air bag, and at least one of the reinforced air bags is disposed within the ventilation assembly;

[0010] When in the first state, the reinforcing airbag inflates and expands, and a first flow guide cavity is formed within the ventilation assembly;

[0011] When in the second state, the reinforcing air bag deflates and contracts, and the first guide cavity disappears.

[0012] According to the technical solutions provided in certain embodiments of this application, the projections of the plurality of second ventilation holes and the supporting structure along the first direction are independent of each other.

[0013] According to the technical solutions provided in some embodiments of this application, a lumbar support assembly is also included. The lumbar support assembly is disposed on the side of the seat foam away from the human body, and the lumbar support assembly is used to support the human body.

[0014] According to the technical solutions provided in certain embodiments of this application, the lumbar support assembly includes:

[0015] A seat spring, wherein the seat spring is disposed on the seat frame;

[0016] A lumbar support airbag is located on the side of the seat mesh spring near the ventilation assembly;

[0017] The lumbar support airbag has a third state and a fourth state.

[0018] When in the third state, the lumbar support airbag inflates and expands, and a second protrusion forms on the seat foam towards the side closer to the human body; when in the fourth state, the lumbar support airbag deflates and contracts, and the second protrusion disappears.

[0019] According to the technical solutions provided in certain embodiments of this application, the lumbar support air bag is correspondingly arranged with the support structure.

[0020] According to the technical solutions provided in some embodiments of this application, the ventilation assembly is further provided with a pressure-bearing air guide.

[0021] According to the technical solutions provided in certain embodiments of this application, an installation groove is provided on the side of the seat foam away from the human body, the installation groove is connected to a plurality of first ventilation holes, and the ventilation component is disposed in the installation groove.

[0022] Secondly, this application provides an automobile seat, including an automobile seat ventilation and support enhancement system as described above.

[0023] Compared with the prior art, the beneficial effects of this application are as follows: This application provides an enhanced ventilation and support function system for automobile seats and an automobile seat. The enhanced system is installed on the seat frame of the automobile seat and includes seat foam covering the seat frame. Multiple first ventilation holes are formed on the seat foam. A ventilation component is provided on the seat foam. Multiple second ventilation holes are formed on the side of the ventilation component closest to the seat foam, and the second ventilation holes correspond one-to-one with and communicate with the first ventilation holes. A connection hole is provided on the side of the ventilation component away from the seat foam, and a fan body is provided at the connection hole. A support structure is also provided inside the ventilation component. The support structure has a first state and a second state. When it is in the first state, a first protrusion is formed on the seat foam towards the side closer to the human body. When it is in the second state, the first protrusion disappears. By setting the support structure inside the ventilation assembly, the support structure can form a guide cavity inside the ventilation assembly when it is in the first state. After the gas enters the ventilation assembly, it can flow fully in the guide cavity, balance the gas pressure in each ventilation hole, and increase the ventilation volume of the ventilation system. At the same time, the first protrusion formed on the seat foam can cooperate with the original lumbar support system in the car seat to achieve a higher lumbar support height.

[0024] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this application do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the split structure of an automotive seat ventilation and support enhancement system provided in Embodiment 1 of this application;

[0027] Figure 2This is a schematic diagram of another split structure of an automotive seat ventilation and support enhancement system provided in Embodiment 1 of this application;

[0028] Figure 3 This is a schematic diagram of the ventilation components and reinforcing airbags of an automotive seat ventilation and support enhancement system provided in Embodiment 1 of this application;

[0029] Figure 4 This is another structural schematic diagram of a ventilation component and reinforcing airbag for an automotive seat ventilation and support enhancement system provided in Embodiment 1 of this application;

[0030] Figure 5 A cross-sectional schematic diagram of a car seat ventilation and support enhancement system provided in Embodiment 1 of this application, showing the enhancement airbag in the fourth state and the lumbar support airbag in the sixth state.

[0031] Figure 6 A cross-sectional schematic diagram of the ventilation component when the reinforcing airbag of the automotive seat ventilation and support enhancement system provided in Embodiment 1 of this application is in the fourth state and the lumbar support airbag is in the sixth state;

[0032] Figure 7 A cross-sectional schematic diagram of a car seat ventilation and support enhancement system provided in Embodiment 1 of this application when the reinforcing airbag is in the third state and the lumbar support airbag is in the sixth state.

[0033] Figure 8 A cross-sectional schematic diagram of the ventilation component when the reinforcing airbag of the automotive seat ventilation and support enhancement system provided in Embodiment 1 of this application is in the third state and the lumbar support airbag is in the sixth state;

[0034] Figure 9 A cross-sectional schematic diagram of a car seat ventilation and support enhancement system provided in Embodiment 1 of this application when the reinforcing airbag is in the third state and the lumbar support airbag is in the fifth state.

[0035] Figure 10 This is a cross-sectional schematic diagram of the ventilation component when the enhanced airbag of the automotive seat ventilation and support function enhancement system provided in Embodiment 1 of this application is in the third state and the lumbar support airbag is in the no state.

[0036] The text labels in the image represent:

[0037] 1. Seat foam; 2. Ventilation assembly; 3. Fan body; 4. Reinforcing air bag; 5. Seat mesh spring; 6. Lumbar support air bag; 11. Mounting groove; 21. First sealing layer; 22. Second sealing layer; 23. Pressure-bearing air guide; 101. First ventilation hole; 201. Second ventilation hole; 202. First airflow chamber; 221. Connection hole. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The descriptions in this section are merely illustrative and explanatory, and should not be construed as limiting the scope of protection of this application. Specifically, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the scope of protection of this invention.

[0039] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0040] Example 1

[0041] As mentioned in the background section, to address the problems existing in the prior art, this application provides an enhanced ventilation and support system for automobile seats, which is installed on the seat frame of an automobile seat and includes:

[0042] Seat foam 1, which covers the seat frame, and has multiple first ventilation holes 101.

[0043] Ventilation component 2 is disposed on seat foam 1. On the side of ventilation component 2 closest to seat foam 1, multiple second ventilation holes 201 are provided. The second ventilation holes 201 correspond one-to-one with the first ventilation holes 101 and are connected. On the side of ventilation component 2 away from seat foam 1, a connecting hole 221 is provided. A fan body 3 is provided at the connecting hole 221. A support structure is also provided inside ventilation component 2.

[0044] The support structure has a first state and a second state. When it is in the first state, a first protrusion is formed on the seat foam 1 towards the side closer to the human body. When it is in the second state, the first protrusion disappears.

[0045] like Figure 1 and Figure 2As shown, the first direction is the thickness direction of the backrest portion of the seat foam 1. The seat foam 1 has a first surface near the occupant and a second surface away from the occupant. Multiple first ventilation holes 101 are formed on the seat foam 1 and extend along the first direction to connect the first and second surfaces. The ventilation component 2 is an elastic air bag structure. It has multiple second ventilation holes 201 near the seat foam 1 and a connecting hole 221 on the side away from the seat foam 1. The ventilation component 2 covers the side of the seat foam 1 away from the human body, and at the same time, the second ventilation holes 201 correspond one-to-one with the first ventilation holes 101 and are connected. The fan body 3 is set at the connecting hole 221 on the second sealing layer 22. The fan body 3 has an axial air inlet and a circumferential air outlet, and its axial direction is the first direction. The ventilation component 2 also has a support structure inside. The support structure has a first state and a second state. When the support structure is in action, a guide cavity is formed inside the ventilation component 2. At the same time, the part of the seat foam 1 corresponding to the guide cavity forms a first air inlet on the side closer to the human body. When the protrusion is in the first state, the support structure is in the first state described above. Due to the positional difference between the fan body 3 and the ventilation holes, there is a significant difference in gas pressure and flow rate between the ventilation holes closer to the fan body 3 and the ventilation holes farther from the fan body 3. When the gas passes through the guide cavity, it can flow fully to balance the gas pressure. At the same time, the guide cavity forms the first protrusion on the seat foam, which can support the human waist and further increase the support height of the lumbar support system. When the support structure is removed, the guide cavity disappears, and the seat foam 1 returns to its initial state, the support structure is in the second state described above. When the air inlet of the fan body 3 is sealed and connected to the connection hole 221, its air outlet is located outside the ventilation component 2, and the fan body 3 can drive the gas to move from the side of the seat foam 1 closer to the human body to the side farther away from the human body. When the air outlet of the fan body 3 is sealed and connected to the connection hole 221, its air inlet is located outside the ventilation component 2, and the fan body 3 can drive the gas to move from the side of the seat foam 1 farther away from the human body to the side closer to the human body.

[0046] By setting a support structure inside the ventilation component 2, the support structure can form a flow guide cavity inside the ventilation component 2 in the first state. After the gas enters the ventilation component 2, it can flow fully in the flow guide cavity, balance the gas pressure in each ventilation hole, and increase the ventilation volume of the ventilation system. At the same time, the first protrusion formed on the seat foam 1 can cooperate with the original lumbar support system in the car seat to achieve a higher lumbar support height.

[0047] In a preferred embodiment, the ventilation assembly 2 is further provided with a pressure-bearing air guide 23.

[0048] like Figure 3-8As shown, the ventilation component 2 is made of two layers of TPU film, with the edges of the two TPU films sealed and welded. The TPU film closer to the seat foam 1 is the first sealing layer 21, and the TPU film farther from the seat foam 1 is the second sealing layer 22. The first sealing layer 21 has multiple second ventilation holes 201, and the second sealing layer 22 has connection holes 221. Inorganic anti-adhesion agents and other materials can also be applied to the second sealing layer 22 for protection. The pressure-bearing air guide 23 can use existing 3D spacer mesh fabric. The 3D spacer mesh fabric has several woven mesh holes and a certain thickness in the first direction, while also possessing good... Good breathability and support ensure ventilation even when compressed by the human body. The pressure-bearing air guide 23 is filled between the first sealing layer 21 and the second sealing layer 22, thereby supporting the elastic air bag formed by the sealing connection of the first sealing layer 21 and the second sealing layer 22. At the same time, the porous structure of the pressure-bearing air guide 23 also has a rectification effect, balancing the gas pressure when the gas passes through. When the support structure forms a flow guide cavity inside the ventilation component 2, the gas pressure can be balanced a second time after passing through the flow guide cavity and the pressure-bearing air guide 23. The gas pressure and flow rate in each first ventilation hole 101 are close to the same, improving the overall performance of the ventilation system.

[0049] In a preferred embodiment,

[0050] The support structure is a reinforced air bag 4, and at least one reinforced air bag 4 is disposed within the ventilation assembly 2;

[0051] When in the first state, the reinforcing air bag 4 is inflated and expands, and a first guide cavity 202 is formed in the ventilation assembly 2;

[0052] When in the second state, the enhanced air bag 4 deflates and contracts, and the first guide cavity 202 disappears.

[0053] like Figure 3-8 As shown, the reinforcing airbag 4, i.e. the aforementioned support structure, is located between the first sealing layer 21 and the pressure-bearing air guide 23, and is connected to an external air source through an air pipe. When the reinforcing airbag 4 is inflated to full expansion, i.e., the first state mentioned above, the first sealing layer 21 separates from the pressure-bearing air guide 23, thereby forming a first flow guide cavity 202 between the first sealing layer 21 and the pressure-bearing air guide 23. The gas entering the ventilation assembly 2 flows fully within the first flow guide cavity 202 and the pressure-bearing air guide 23, and the gas pressure is balanced twice. Moreover, there are no other fillers inside the first flow guide layer 202, resulting in low wind resistance and further improving the ventilation effect. At the same time, the inflated reinforcing airbag 4 can also provide additional support for the seat foam 1, achieving better lumbar support function in conjunction with the original lumbar support system. When the reinforcing airbag 4 deflates and contracts, i.e., the second state mentioned above, the first flow guide cavity 202 disappears, and the portion of the seat foam 1 corresponding to the first flow guide cavity 202 moves away from the human body to the initial position.

[0054] In a preferred embodiment, the projections of the plurality of second ventilation holes 201 and the support structure along the first direction are independent of each other.

[0055] The reinforcing airbag 4 is offset from the second ventilation hole 201 to avoid the reinforcing airbag 4 blocking the second ventilation hole 201 and affecting the ventilation volume of the ventilation component. Furthermore, when the reinforcing airbag 4 is raised, i.e., in the third state, its top surface is preferably arc-shaped, and it makes point or line contact with the first sealing layer 21, further reducing the impact on the ventilation volume of the ventilation system. Furthermore, the reinforcing airbag 4 can be adopted... Figure 3 The pillow-shaped air bag in the middle, or Figure 4 The reinforced airbag 4 can be a cylindrical airbag, or a square or round airbag or other structural shape that meets the requirements. One or more reinforced airbags 4 can be set. Massage airbags commonly found in car seats can also be used as reinforced airbags 4. It should be noted that multiple reinforced airbags 4 can be connected to each other and connected to an external air source through the same air pipe, or they can be independent of each other and connected to an external air source through different air pipes. No special limitation is made here.

[0056] In a preferred embodiment, a lumbar support assembly is also included, which is disposed on the side of the seat foam 1 away from the human body, and is used to support the human body.

[0057] In a preferred embodiment, the lumbar support assembly includes:

[0058] Seat spring 5, seat spring 5 is installed on the seat frame;

[0059] Lumbar support airbag 6 is located on the side of seat spring 5 near ventilation component 2;

[0060] The lumbar support airbag 6 has a third and a fourth state.

[0061] When in the third state, the lumbar support airbag 6 inflates and expands, forming a second protrusion on the seat foam 1 towards the side closer to the human body; when in the fourth state, the lumbar support airbag 6 deflates and contracts, and the second protrusion disappears.

[0062] like Figure 1 , Figure 2 and Figure 9 As shown, the seat mesh spring 5 is one of the components of the car seat lumbar support system. It is fixed to the seat frame on both sides. The lumbar support airbag 6 is fixed to the seat mesh spring 5 and is also connected to an external air source through an air pipe. By controlling the inflation / deflation of the lumbar support airbag 6, the lumbar support airbag 6 can be switched between the third and fourth states, thereby causing the part of the seat foam 1 corresponding to the lumbar support airbag 6 to move closer to or further away from the human body.

[0063] In a preferred embodiment, the lumbar support airbag 6 is provided correspondingly to the support structure.

[0064] like Figure 9 As shown, the lumbar support airbag 6 and the reinforcing airbag 4 are arranged correspondingly in the thickness direction of the backrest part of the seat foam 1. Thus, when the lumbar support airbag 6 and the reinforcing airbag 4 are inflated together, the support height and strength for the human lower back can be further increased compared to the original lumbar support system.

[0065] In a preferred embodiment, a mounting groove 11 is provided on the side of the seat foam 1 away from the human body. The mounting groove 11 is connected to a plurality of first ventilation holes 101, and the ventilation component 2 is disposed in the mounting groove 11.

[0066] like Figure 2 As shown, the mounting groove 11 is approximately a cuboid groove, which is opened on the second surface of the seat foam 1. Multiple first ventilation holes 101 are connected to the bottom of the mounting groove 11. The inner contour of the mounting groove 11 matches the outer contour of the ventilation component 2, so that the ventilation component 2 can be embedded in the mounting groove 11 and welded and fixed to the seat foam 1.

[0067] like Figure 5 and Figure 6 As shown, at this time, the reinforcing airbag 4 is in the second state, the lumbar support airbag 6 is in the fourth state, and when the ventilation system is working, the gas flows through the first ventilation hole 101, the second ventilation hole 201, and the pressure-bearing air guide 23 on both sides of the seat foam 1 to achieve the ventilation function. No bulges are generated on the seat foam 1. Figure 7 and Figure 8 As shown, at this time, the reinforcing airbag 4 is in the first state, and the lumbar support airbag 6 is in the fourth state. The reinforcing airbag 4 inflates and expands, forming a first guide cavity 202 inside the ventilation component 2. When the ventilation system is working, the gas flows through the first ventilation hole 101, the second ventilation hole 201, the first guide cavity 202, and the pressure-bearing air guide component 23 on both sides of the seat foam 1. The secondary balance makes the pressure of the ventilation system more even, thereby increasing the ventilation volume of the ventilation function. At the same time, a first protrusion is formed on the seat foam 1 to provide support for the human waist. Figure 9 and Figure 10 As shown, at this time, the reinforcing airbag 4 is in the first state, and the lumbar support airbag 6 is in the third state. The lumbar support airbag 6 inflates and expands, further increasing the height of the first protrusion on the seat foam 1 to provide higher support for the human waist.

[0068] Example 2

[0069] This embodiment provides a car seat, including a car seat ventilation and support enhancement system as described in Embodiment 1.

[0070] The seat foam 1 covers the seat frame, and the seat foam 1 is also covered with a seat cover made of breathable material. When the air inlet of the fan body 3 is sealed to the connection hole 221, the fan body 3 is started. Under the drive of the fan body 3, the gas can pass through the first ventilation hole 101, the second ventilation hole 201, the first guide cavity 202 and the pressure-bearing air guide component 23 in sequence, and then be drawn in through the air inlet of the fan body 3, and then discharged through the air outlet of the fan body 3 to the side of the car seat away from the human body. When the air outlet of the fan body 3 is sealed to the connection hole 221, the fan body 3 is started. Under the drive of the fan body 3, the gas can be drawn in through the air inlet of the fan body 3, and then discharged through the air outlet of the fan body 3 into the ventilation component 2, and then pass through the pressure-bearing air guide component 23, the first guide cavity 202, the second ventilation hole 201 and the first ventilation hole 101 in sequence, and then be discharged to the side of the car seat closer to the human body.

[0071] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A system for enhancing the ventilation and support function of a car seat, disposed on the seat frame of a car seat, characterized in that, include: Seat foam (1), the seat foam (1) covers the seat frame, and the seat foam (1) has a plurality of first ventilation holes (101). A ventilation component (2) is disposed on the seat foam (1). The ventilation component (2) has a plurality of second ventilation holes (201) on the side of the seat foam (1) that are close to the seat foam (1). The second ventilation holes (201) correspond one-to-one with the first ventilation holes (101) and are connected. The ventilation component (2) has a connection hole (221) on the side away from the seat foam (1). A fan body (3) is provided at the connection hole (221). The ventilation component also has a support structure. The support structure has a first state and a second state. When it is in the first state, a first protrusion is formed on the seat foam (1) towards the side closer to the human body. When it is in the second state, the first protrusion disappears.

2. The automotive seat ventilation and support enhancement system according to claim 1, characterized in that, The support structure is a reinforced air bag (4), and at least one of the reinforced air bags (4) is disposed within the ventilation assembly (2); When in the first state, the reinforcing air bag (4) is inflated and expands, and a first flow guide cavity (202) is formed in the ventilation assembly (2). When in the second state, the reinforcing air bag (4) deflates and contracts, and the first guide cavity (202) disappears.

3. The automotive seat ventilation and support enhancement system according to claim 1, characterized in that, The projections of the plurality of second ventilation holes (201) and the support structure along the first direction are independent of each other.

4. The automotive seat ventilation and support enhancement system according to claim 1, characterized in that, It also includes a lumbar support assembly, which is located on the side of the seat foam (1) away from the human body, and the lumbar support assembly is used to support the human body.

5. The automotive seat ventilation and support enhancement system according to claim 4, characterized in that, The lumbar support assembly includes: Seat spring (5), the seat spring (5) is provided on the seat frame; Lumbar support air bag (6), the lumbar support air bag (6) is located on the side of the seat mesh spring (5) near the ventilation assembly (2); The lumbar support air bag (6) has a third state and a fourth state. When in the third state, the lumbar support air bag (6) inflates and expands, and a second protrusion is formed on the seat foam (1) towards the side closer to the human body; when in the fourth state, the lumbar support air bag (6) deflates and contracts, and the second protrusion disappears.

6. The automotive seat ventilation and support enhancement system according to claim 5, characterized in that, The lumbar support air bag (6) is provided in correspondence with the support structure.

7. The automotive seat ventilation and support enhancement system according to claim 1, characterized in that, The ventilation assembly (2) is also provided with a pressure-bearing air guide (23).

8. The automotive seat ventilation and support enhancement system according to claim 1, characterized in that, The seat foam (1) has an installation groove (11) on the side away from the human body. The installation groove (11) is connected to a plurality of first ventilation holes (101). The ventilation component (2) is located in the installation groove (11).

9. A car seat, characterized in that, Including a vehicle seat ventilation and support enhancement system as described in any one of claims 1-8.