Automobile seat ventilation structure

Abstract

The application provides a kind of automobile seat ventilation structure, including seat sponge, the seat sponge is opened with several groups of first ventilation hole, the bottom of the seat sponge is opened with ventilation groove group, the ventilation groove group is communicated with first ventilation hole;The bottom of the seat sponge is fixedly connected with air guide felt assembly, the air guide felt assembly includes felt, the felt is fixedly connected with seat sponge, the upper surface of the felt is fixedly connected with air guide net layer, the air guide layer net is arranged in ventilation groove group, the felt is fixedly connected with fan seat, and the fan seat is fixedly connected with fan.The application solves the problem of large space occupation and poor ventilation effect of some existing automobile seat ventilation structure.

Description

Technical Field

[0001] This invention relates to the field of automotive seat ventilation technology, and more particularly to an automotive seat ventilation structure. Background Technology

[0002] Seat ventilation systems, as a key technology for improving cabin thermal comfort, effectively alleviate the stuffiness and dampness caused by prolonged sitting and non-breathable surface materials, significantly improving the comfort of long-distance driving and riding. Currently, some mainstream active seat ventilation systems employ a three-layer structure: first, an installation groove is created in the seat foam; then, an independent ventilation bag, typically about 10mm thick, is embedded in the groove; finally, a guide cloth is added between the air bag and the back of the seat foam to achieve uniform airflow distribution. However, this structure has the following drawbacks: the independent air bag and guide cloth overlap to a considerable thickness, severely encroaching on the cushioning space that the seat foam should provide, directly leading to an overall increase in seat thickness or a decrease in comfort; the airflow must pass through the internal cavity of the air bag and the complex pore structure of the guide cloth, resulting in a long flow path, significant pressure loss, slow ventilation response, and high energy consumption. Summary of the Invention

[0003] The purpose of this invention is to provide a new car seat ventilation structure that solves the problems of large space occupation and poor ventilation effect of some existing car seat ventilation structures.

[0004] The technical solution adopted by this invention to solve its technical problem is: A car seat ventilation structure includes a seat sponge with several sets of first ventilation holes. A ventilation groove assembly is formed at the bottom of the seat sponge, communicating with the first ventilation holes. An air-guiding felt assembly is fixedly connected to the bottom of the seat sponge. The air-guiding felt assembly includes felt, which is fixedly connected to the seat sponge. An air-guiding mesh layer is fixedly connected to the upper surface of the felt, and the air-guiding mesh layer is disposed within the ventilation groove assembly. A fan mount is fixedly connected to the felt, and a fan is fixedly connected to the fan mount.

[0005] Furthermore, the ventilation slots are arranged horizontally, and the first ventilation hole penetrates the entire seat foam and is connected to the ventilation slots.

[0006] Furthermore, the ventilation duct assembly includes several sets of vertical ventilation ducts spaced apart, and horizontal ventilation ducts connected to the vertical ventilation ducts; the air guide mesh layer includes several sets of vertical air guide strips spaced apart, and horizontal air guide strips connected to the vertical air guide strips; the vertical ventilation strips are adapted to the vertical ventilation ducts, and the horizontal air guide strips are adapted to the horizontal ventilation ducts.

[0007] Furthermore, the air guide mesh layer is provided with a 3D three-dimensional mesh structure formed by supporting connecting wires, and the mesh holes inside the air guide mesh are interconnected to achieve airflow communication.

[0008] Furthermore, the thickness of the felt is 2.0-2.5 mm, the thickness of the air guide mesh layer is 10 mm, and the depth of the ventilation slot group is 10-12 mm.

[0009] Furthermore, the air guide mesh layer is fixedly connected to the upper surface of the felt by adhesive, and the upper surface of the felt is provided with several sets of adhesive points at intervals.

[0010] Furthermore, a sponge pad is provided at the upper end of the seat sponge, and a second ventilation hole is provided on the sponge pad at the position corresponding to the ventilation hole.

[0011] Furthermore, the edge of the upper surface of the felt is fixedly connected to the bottom of the seat sponge using double-sided adhesive.

[0012] Furthermore, the fan base includes a ventilation pipe, on which a fixing plate is fixedly mounted. One end of the ventilation pipe is fixedly connected to the air outlet of the fan, and the other end of the ventilation pipe passes through the felt and communicates with the ventilation slot assembly. The fixing plate is fixedly connected to the felt by sewing.

[0013] The present invention also includes a vehicle equipped with the above-described car seat ventilation structure.

[0014] The beneficial effects of this invention are as follows: This invention provides a car seat ventilation structure that uses an ultra-thin ventilation felt assembly to replace the traditional air bag, greatly reducing airflow resistance. Combined with a directional air duct constructed by grooves at the bottom of the seat foam, it achieves efficient airflow delivery and rapid response, resulting in direct and effective heat dissipation. The ultra-thin design significantly reduces the space occupied by the system within the seat, reserving more layout space for other comfort components and increasing overall design freedom. The ventilation felt and seat foam are tightly bonded, forming a stable closed air duct, preventing abnormal noises and detachment of components during operation, and ensuring excellent durability. The carefully planned air duct network ensures that airflow can evenly cover the preset area, improving overall comfort. The seat ventilation component has a clear structure and well-defined assembly logic, facilitating mass production and installation, while also simplifying subsequent testing and maintenance processes.

[0015] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a diagram of a car seat ventilation structure according to the present invention; Figure 2 This is a structural diagram of an automobile seat according to the present invention from another direction; Figure 3 This is a structural diagram of the seat sponge in this invention; Figure 4 This is a structural diagram of the air-guiding felt assembly in this invention; Figure 5 This is a structural diagram of the fan mount in this invention.

[0017] The components include: 1. Seat foam; 2. Air guide felt assembly; 3. Fan base; 4. Fan; 5. Foam pad; 101. First ventilation hole; 102. Ventilation slot assembly; 201. Felt; 202. Air guide mesh layer; 203. Double-sided adhesive; 204. Adhesive point; 301. Ventilation pipe; 302. Fixing plate; 501. Second ventilation hole; 1021. Vertical ventilation slot; 1022. Horizontal ventilation slot; 2021. Vertical air guide strip; 2022. Horizontal air guide strip. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. It should be noted that, unless otherwise specified, the implementation methods and features in the implementation methods in this disclosure can be combined, separated, interchanged, and / or rearranged. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] In the accompanying drawings, for clarity and / or descriptive purposes, the dimensions and relative dimensions of the parts may be exaggerated, and the same reference numerals denote the same parts.

[0020] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “(the)” are also intended to include the plural forms. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0021] This invention belongs to the field of automotive interior seat technology, specifically relating to active temperature control and ventilation systems for passenger and commercial vehicle seats. It is particularly suitable for ventilation modules in the driver and passenger seat cushions of gasoline-powered passenger vehicles and new energy pure electric / hybrid vehicles, and can also be extended to seat back ventilation modifications. As the automotive industry undergoes profound iterations towards intelligence, comfort, and lightweighting, seat thermal comfort features have gradually moved from being exclusive options on luxury models to standard features in mid-range family cars. Seat ventilation systems, as core thermal management components, directly determine the user's summer driving experience, long-distance travel fatigue, and the overall competitiveness of the vehicle's interior products, making them a key interior module for OEMs to differentiate themselves.

[0022] In the modern automotive industry, ride comfort has become one of the core indicators for measuring overall vehicle quality and user experience. Under this trend, automotive seat assemblies have evolved from traditional support components into key systems integrating ergonomics, thermal comfort management, and intelligent interaction. Among these, seat ventilation systems, as a key technology for improving cabin thermal comfort, effectively alleviate the stuffiness and dampness caused by prolonged sitting and non-breathable surface materials by actively adjusting the microclimate of the seat surface, significantly improving the comfort of long-distance driving and riding.

[0023] Car seat ventilation is a temperature control system installed inside car seats. It primarily relies on a fan, airflow channels, and a breathable medium to allow air circulation between the seat cushion and backrest, making it a comfort feature of car seats. When a user sits in a car for a long time, the body and seat are in close contact, preventing heat dissipation and causing the seat surface temperature to rise. Seat ventilation promotes airflow, carrying away the accumulated heat from the contact surface and lowering the seat surface temperature. This reduces stuffiness and burning sensations on the buttocks and back after prolonged driving in the summer sun. Sitting for extended periods causes sweating, and moisture can easily accumulate between the skin and the seat, creating a sticky feeling. Ventilation effectively removes moisture and sweat, keeping the skin and seat surface dry and reducing the feeling of sweat sticking to clothing.

[0024] Current mainstream active seat ventilation systems employ a "three-layer additional" structure: First, a mounting groove for installing a ventilation bag is cut into the seat foam. Then, an independent ventilation bag is embedded in the mounting groove. The thickness of this ventilation bag is typically about 10mm. After adding the air guide cloth and assembly gaps, the overall thickness exceeds 12mm. Due to the limitations of the overall vehicle seat appearance and thickness, the effective cushioning foam of the seat cushion must be thinned to accommodate the ventilation components. Insufficient foam cushioning thickness leads to a hard seat and fatigue in the buttocks and legs during long journeys. At the same time, the hard ventilation bag embedded inside the foam creates localized hard spots, concentrating pressure and resulting in a poor user experience. After long-term high and low temperature cycling and aging, the adhesive joints are prone to detachment and misalignment, the air duct seal fails, resulting in large-area air leakage and a significant reduction in ventilation volume. The airflow from the fan must pass through the air bag cavity, the air guide cloth, and the sponge vents in sequence. This multi-stage flow path creates vortex resistance and structural resistance, resulting in high overall system pressure loss. With a fan of the same power, the effective air velocity reaching the seat surface is low, and it takes a long time to feel the cooling effect after ventilation is turned on. To achieve the target airflow, only a high-current fan can be used, increasing the low-voltage electrical load on the entire vehicle. Both the air bag and the air guide cloth require separate cutting molds and tooling fixtures. The assembly process involves multiple manual steps, including sponge transfer, air bag placement, mesh alignment, and adhesive fixing, leading to long assembly times. Manual placement easily results in wrinkles in the air bag and misalignment of the mesh, causing large fluctuations in the uniformity of the finished airflow, a high rework rate, and hindering automated mass production. After 100,000 seating durability tests, the air bag is prone to cracking at bends, and the 3D air guide net permanently collapses under pressure, blocking the airflow channel. This reduces the airflow area, causing a 15%-30% decrease in airflow. The ventilation function weakens significantly after 3-5 years of vehicle use.

[0025] To address the shortcomings of the existing technology, this invention provides a car seat ventilation structure that eliminates the need for separate ventilation bags and individual air guide fabric components. Instead, the air duct is integrated into the seat foam body, and a thin, integrated air guide felt assembly is used to achieve uniform airflow. This addresses the various coupling technology pain points of traditional ventilation structures from a structural perspective.

[0026] This invention relates to an automotive seat ventilation structure, a structural innovation specifically for seat ventilation design. It eliminates independent air bags and air guide fabrics, achieving a seat cushion ventilation system with superior ventilation performance and passenger comfort. This structure is primarily applied to seat assemblies in various passenger and commercial vehicles. The core of this solution is a structural reconstruction that eliminates components and integrates functions into the body. It utilizes a seat cushion ventilation system that integrates air ducts through slotted sponge body and combines it with ultra-thin composite ventilation felt to achieve uniform ventilation. It is suitable for ventilation modules in passenger vehicles (both gasoline and new energy), including driver and passenger seat cushions and rear seat cushions. It can also be extended to seat back ventilation modifications, including the following improvements: Instead of using the ventilation bag mounting slots, create a ventilation slot assembly: design and machine interconnected ventilation slots directly at the bottom of the seat foam body. This "ventilation slot" is fundamentally different from the traditional "mounting slots" used to accommodate air bags: it is not used to accommodate a separate component, but is itself part of the air duct structure, precisely sized according to airflow requirements, maximizing the integrity of the seat foam.

[0027] Instead of individual ventilation bags, an ultra-thin sealing layer is used: a layer of ultra-thin ventilation felt, only about 2mm thick, is directly covered and bonded to the bottom of the seat foam. This felt does not act as a "bag" with an independent cavity, but rather works in conjunction with the ventilation channels at the bottom of the foam to form a closed ventilation duct.

[0028] Eliminating the need for a separate air guide cloth and utilizing the material's inherent properties for airflow uniformity: The selected ultra-thin ventilation felt assembly material combines excellent breathability and radial air diffusion capabilities, enabling it to achieve uniform airflow dispersion on its own, thus eliminating the need for a separate air guide cloth component.

[0029] Completely abandoning the traditional complex add-on design pattern of "installation slot, independent air bag, and air guide cloth", it aims to solve a series of interrelated technical problems such as large space occupation, reduced passenger comfort, poor system reliability, slow ventilation response, and high manufacturing cost.

[0030] Specifically, in this embodiment, a car seat ventilation structure includes a seat sponge 1, which has several sets of first ventilation holes 101. A ventilation groove group 102 is formed at the bottom of the seat sponge 1, communicating with the first ventilation holes 101. The groove depth of the ventilation groove group 102 is 10-12 mm; in this embodiment, the groove depth of the ventilation groove group 102 is 10 mm. An air-guiding felt assembly 2 is fixedly connected to the bottom of the seat sponge 1. The air-guiding felt assembly 2 includes a felt 201, which is fixedly connected to the seat sponge 1. An air-guiding mesh layer 202 is fixedly connected to the upper surface of the felt 201, and the air-guiding mesh layer 202 is disposed in the ventilation groove group 102. A fan seat 3 is fixedly connected to the felt 201, and a fan 4 is fixedly connected to the fan seat 3. The air inlet of the fan base 3 is located below the air guide mesh layer 202 and is also located in the ventilation slot group 102 to ensure that the airflow can pass smoothly through the air guide mesh layer 202 and enter the ventilation slot group 102.

[0031] Regarding the felt component: The core of the ventilation system uses ultra-thin felt approximately 2mm thick, representing a significant reduction in thickness and a substantial structural optimization compared to the traditional 10mm thick ventilation bags. This improvement not only saves valuable space inside the seat but also enhances ventilation response efficiency and overall comfort.

[0032] To facilitate the installation of the air guide mesh layer 202 and ensure the connectivity of the entire ventilation system, the ventilation groove set 102 is arranged in the horizontal direction, and the ventilation holes 101 penetrate the entire seat foam 1 in the vertical direction and then communicate with the ventilation groove set 102.

[0033] Regarding the seat foam 1 section: The ventilation design of the seat foam 1 can be realized by systematically forming multiple sets of grooves at the bottom of the foam body and opening ventilation holes inside the foam body. These carefully arranged grooves are connected to each other to form a complete mesh ventilation duct inside the seat cushion. Air can enter from the pre-set ventilation opening below the seat and circulate smoothly along the grooves at the bottom of the seat foam, ensuring that each independent ventilation hole communicates with the duct network to form an effective airflow path. This structure not only improves the breathability of the seat cushion, but also continuously promotes air circulation, helping to quickly dissipate heat and moisture, thereby significantly improving the comfort and heat dissipation effect during long-time riding.

[0034] Specifically, in this embodiment, the ventilation groove set 102 includes several sets of vertically arranged ventilation grooves 1021 disposed at intervals, and transverse ventilation grooves 1022 communicating with the vertical ventilation grooves 1021; the air guide mesh layer 202 includes several sets of vertical air guide strips 2021 disposed at intervals, and transverse air guide strips 2022 connected to the vertical air guide strips 2021; the vertical air guide strips 2021 are adapted to the vertical ventilation grooves 1021, and the transverse air guide strips 2022 are adapted to the transverse ventilation grooves 1022. In this embodiment, three sets of the vertical ventilation grooves 1021 and the vertical air guide strips 2021 are provided, both extending along the length direction of the vehicle body; two sets of the transverse ventilation grooves 1022 and the transverse air guide strips 2022 are provided, both extending along the width direction of the vehicle body, forming the ventilation groove set 102 and the air guide mesh layer 202 with a structure similar to the Chinese character "Wang". The ventilation holes 101 are arranged at intervals in the ventilation groove set 102, so as to achieve a uniform ventilation effect for the car seat.

[0035] To ensure a good ventilation and air guiding effect, a 3D three-dimensional mesh pore structure formed by supporting connecting filaments is provided in the air guide mesh layer 202, and the mesh cavities inside the air guide mesh 202 are communicated with each other to realize airflow intercommunication. The 3D three-dimensional mesh pore structure designed for the air guide mesh layer 202 is skillfully disposed in the duct space of the ventilation groove set 102 of the seat foam 1 itself, which can greatly reduce the installation space of the ventilation system on the premise of ensuring smooth airflow.

[0036] In this embodiment, the air guide mesh layer 202 has a sandwich structure, which includes an upper and a lower supporting surface layer, and a ventilation layer sandwiched between the supporting surface layers. This air guide mesh layer 202 can be provided by Changshu Yinghong Automotive Interior Parts Co., Ltd., with the model number YH-2417.

[0037] The supporting surface layer is used to constrain and fix the intermediate ventilation layer. The supporting surface layer has a hexagonal honeycomb mesh structure with hexagonal mesh holes. Under force, it provides triangular support, resulting in optimal structural stability. Airflow is evenly distributed, preventing localized air blockage. It offers the best balance between compression resistance and abrasion resistance. The coils on the surface of the ventilation layer are mutually restrained, preventing localized bulging under pressure. It can disperse localized surface pressure, preventing direct single-point compression of the ventilation layer filaments by localized heavy pressure from the human body. The surface layer disperses pressure to multiple support nodes, avoiding localized crushing and hardening. It can improve the overall tear resistance and tensile strength of the fabric. The surface filament coils form a continuous force-bearing surface, preventing edge fraying and unwinding after cutting.

[0038] The ventilation layer is composed of multiple sets of X-shaped or vertically spaced connecting monofilaments, with both the upper and lower ends of the ventilation layer braided and anchored to the coils of the supporting surface layer. Without the support surface layer to restrain it, the monofilaments of the ventilation layer will collapse and slip under pressure, causing the entire layer to crumble. The transverse and longitudinal densities directly determine the density of the monofilament anchor points.

[0039] In this embodiment, the felt 201 has a thickness of 2.25 mm, and the air guide mesh layer 202 is made of polyester with a thickness of 10 mm. Based on the cross-section of the air guide mesh layer 202, the ventilation layer of the air guide mesh layer 202 has 7 longitudinal coils within a 1 cm horizontal range and 1.7 transverse coils within a 1 cm vertical thickness range. The connecting wire of the ventilation layer has a thickness of 24 s.

[0040] The air guide mesh layer 202 provides elastic support for the felt 201, preventing the felt 201 from being pressed into the ventilation slot assembly 102 and blocking the ventilation slot when a person sits down. When a person sits down, the air guide mesh layer 202 will be appropriately compressed, but the mesh is not allowed to completely close and block the air duct; when a person stands up, the air guide mesh layer 202 will immediately rebound and support the felt 201.

[0041] In this embodiment, the compressive stress test in the thickness direction of the air guide mesh layer 202 was carried out. Before the test, the sample was subjected to three pre-compression cycles. In each pre-compression cycle, the sample was compressed to 30% deformation rate in the thickness direction and then unloaded. No data was collected during the pre-compression cycle. After the three pre-compression cycles were completed, the sample was reloaded and compressed to 40% deformation rate in the thickness direction. The compressive stress corresponding to 40% thickness deformation rate was measured to be 15 kPa.

[0042] In order to facilitate the fixing of the air guide mesh layer 202 to the felt 201 without obstructing the flow of gas, the air guide mesh layer 202 is fixedly connected to the upper surface of the felt 201 by hot melt adhesive, and the upper surface of the felt 201 is provided with several sets of adhesive dots 204 at intervals.

[0043] To achieve better ventilation while minimizing space occupation, the ventilation slot group 102 has a slot depth of 10-11 mm, preferably 10 mm.

[0044] To better secure the air-guiding felt assembly 2 and the seat foam 1 into a single unit, prevent parts from loosening or falling off, and ensure a tight seal, the edge of the upper surface of the felt 201 is fixedly connected to the bottom of the seat foam 1 by adhesive. In this embodiment, a ring of oil-based pressure-sensitive double-sided adhesive, such as modified acrylic pressure-sensitive adhesive, is fixed around the perimeter of the felt 201; and it is firmly adhered to the bottom of the seat foam 1 by adhesive, so that the two fit tightly together to form a complete and sealed ventilation cavity.

[0045] To ensure the comfort of the seat, a sponge pad 5 is provided at the upper end of the seat sponge 1, and a second ventilation hole 501 is provided on the sponge pad 5 at the position corresponding to the ventilation hole 101.

[0046] To better connect the fan 4 to the ventilation system, the fan base 3 includes a ventilation pipe 301, on which a fixing plate 302 is fixedly mounted. One end of the ventilation pipe 301 is fixedly connected to the air outlet of the fan 4, allowing the air outlet of the fan 4 to be inserted into the ventilation pipe 301 of the fan base 3 for interference fit assembly. The other end of the ventilation pipe 301 passes through the felt 201 and communicates with the ventilation slot assembly 102. The fixing plate 302 is fixedly connected to the felt 201 by sewing.

[0047] The inlet of the fan base 3 is precisely positioned on the felt 201, seamlessly connecting with the air outlet of the fan 4 to ensure efficient airflow. The fixing method between the felt 201 and the fan guide seat 301 is scientific and reliable. The rubber fixing plate 302 is reinforced with the felt 201 by reinforced stitching, ensuring a firm and stable fit during use and preventing it from easily falling off or shifting.

[0048] When the fan 4 is started, the airflow is output from the air outlet of the fan 4, first enters the ventilation duct 301, and then flows through the efficient airflow delivery path composed of the air guide mesh layer 202, the ventilation slot group 102, and the ventilation hole 101, and finally reaches the air outlet of the seat sponge 1, continuously and evenly delivering it to the human body surface, thereby achieving excellent active ventilation and heat dissipation effect.

[0049] Additionally, the present invention also includes a vehicle equipped with the aforementioned automotive seat ventilation structure. The vehicle employs a suction-type negative pressure ventilation operating logic, and the complete airflow circulation process is as follows: When the vehicle cabin activates the seat ventilation function, the vehicle's low-voltage 12V power supply powers the fan 4. The impeller inside the fan rotates at high speed, creating a stable negative pressure suction inside the ventilation duct 301. The negative pressure is conducted upwards along the ventilation duct to the mesh air duct inside the ventilation slot assembly 102, creating a continuous negative pressure zone within the air duct cavity. The humid and hot air from the contact surface between the human buttocks, back, and seat surface is drawn by atmospheric pressure through the second ventilation hole 501 of the sponge pad and the first ventilation hole 101 of the seat sponge, converging into the mesh air duct of the ventilation slot assembly 102 at the bottom of the seat sponge. The three-dimensional through-holes of the air guide mesh layer 202 inside the air duct evenly distribute the airflow to the entire air duct area, avoiding localized airflow concentration and dead zones. All the humid and hot air is gathered at the air inlet in the middle of the ventilation duct 301 and continuously drawn out by the fan 4 to the cabin space at the bottom of the seat, completing a full airflow cycle.

[0050] During continuous operation, the heat and sweat vapor accumulated on the skin surface are continuously drawn away with the airflow, maintaining the skin's humidity at a stable 50-60% RH comfortable range. The body surface temperature continues to decrease, eliminating the stuffy, sticky, and uncomfortable feeling. The air guide mesh layer 202 provides full three-dimensional support for the base felt 201, preventing it from collapsing and blocking the airflow when the body sits down and compresses. It automatically rebounds and restores the complete airflow channel when the body stands up. The air guide felt assembly 2 and the seat sponge 1 are bonded together in one piece using double-sided adhesive and spot bonding, eliminating relative sliding friction pairs and completely eliminating bumps and noises. The entire ventilation system eliminates independent ventilation bags, with the airflow directly integrated into the seat sponge body, significantly reducing the thickness occupied by the ventilation components and retaining sufficient sponge cushioning layer, thus balancing ventilation performance and seating comfort.

[0051] This invention solves a series of interconnected technical problems in the prior art, such as large seat space occupation, reduced riding comfort, poor system reliability, slow ventilation response, and high manufacturing cost. It completely abandons the complex additional design mode of combining traditional air bag mounting slots, independent air bags, and air guide cloth.

[0052] Compared with the prior art, the present invention has the following advantages: I. Significantly improved ventilation performance, with faster response and more uniform airflow.

[0053] Reduced air resistance and accelerated response: In traditional solutions, airflow must overcome the vortex resistance of the ventilation bag cavity and the structural resistance of the air guide cloth in sequence, resulting in a complex flow path. This solution integrates the air duct with the sponge body, simplifying the airflow path to "fan → air guide felt assembly diffuser layer → seat sponge ventilation channel group". The process is direct, and the effective flow cross-sectional area is designed more rationally, avoiding local over-blowing or ventilation dead zones, and significantly improving the user's comfort.

[0054] Second, ride comfort has been fundamentally improved.

[0055] Eliminating "hard spots" and ensuring continuous pressure distribution: Traditional air vents are much harder than foam. When a seat bears the weight of the human body for extended periods, it's like embedding an undeformable "hard lump" in the foam cushioning layer, causing peak pressure distribution and accelerating fatigue. This solution eliminates the air vent component, making the seat cushion foam a continuous and uniform elastomer. During long journeys, this significantly reduces pressure and numbness in the buttocks and legs. The seat cushion foam retains a more complete cushioning thickness, enhancing support. By eliminating approximately 10mm of the air vent and its installation space, the effective pressure-bearing foam thickness can be increased by about 7-10mm for the same total seat thickness. This directly translates to superior shock absorption and a more enveloping feel, resulting in a significantly improved static comfort score.

[0056] Third, the system's reliability and durability have been greatly enhanced.

[0057] (1) Completely eliminate typical sources of abnormal noise: In traditional solutions, there are multiple friction pairs between the ventilation bag and the air mounting slot, as well as between the ventilation bag and the air guide cloth. When the vehicle bumps or the body repeatedly sits down and squeezes, the parts rub against each other, generating continuous friction and producing a "squeaking" noise. This solution reinforces the ultra-thin air guide felt assembly with adhesive and sewing, permanently combining it with the seat foam into a single component, eliminating relative movement between the parts. After three stages of mechanical vibration testing (normal temperature, high temperature 85℃, and low temperature -40℃), the sample of this solution did not produce any audible friction noise, while the traditional comparison sample showed obvious abnormal noise in multiple stages.

[0058] (2) Improved connection reliability: The integrated structure avoids the problems of partial detachment and air leakage caused by adhesive aging or stitching breakage in traditional ventilation bags. After 100,000 simulated riding continuous ventilation cycle durability tests, the system air volume attenuation rate is less than 5%, which is far better than the traditional structure (usually attenuation of 15%-30%), proving its long-term reliability.

[0059] IV. Significant space and weight savings enable higher integration.

[0060] With its simplified structure, the system occupies more than 60% less space within the seat, and its overall weight is reduced by about 40%, making it more conducive to lightweight design. Furthermore, the valuable space and weight savings allow for the integration of more complex seat heating systems (such as zoned heating), occupancy sensors, and even slim massage modules within the same seat platform, enabling a leap from a single ventilation function to an "integrated module of thermal comfort and intelligent sensing."

[0061] V. Simplification of manufacturing and assembly to improve quality consistency This eliminates the need for multiple manual assembly steps, such as cutting and placing ventilation bags and laying air guide cloths. This not only shortens the assembly time of related processes but also reduces quality fluctuations caused by inconsistent manual operations (such as folding of ventilation bags and wrinkling of air guide cloths). The first-time assembly qualification rate of products is significantly improved, which is conducive to large-scale standardized production.

[0062] In summary, the technical solution of this invention can achieve component simplification and cost control, while bringing quantifiable and verifiable significant improvements and breakthroughs in multiple dimensions such as core ventilation performance, fundamental ride comfort, long-term system reliability, and manufacturing convenience. Its comprehensive technical effect is far from a simple optimization of traditional solutions, but a more competitive systemic solution.

[0063] In the description of this invention, it should be understood that terms such as “center,” “longitudinal,” “lateral,” “vertical,” “horizontal,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “bottom,” “inner,” “outer,” “top,” “one end,” “one side,” “both ends,” “both sides,” “clockwise,” and “counterclockwise” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0064] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this patent, unless otherwise stated, "a plurality of" means two or more.

[0065] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0066] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct applications in other situations, fall within the protection scope of the present invention.

Claims

1. A car seat ventilation structure, comprising seat foam (1), characterized in that, The seat sponge (1) is provided with a plurality of first ventilation holes (101), and the seat sponge (1) is provided with ventilation groove group (102) at the bottom, the ventilation groove group (102) communicating with the first ventilation holes (101); the bottom of the seat sponge (1) is fixedly connected to a wind-guiding felt assembly (2), the wind-guiding felt assembly (2) includes a felt (201), the felt (201) is fixedly connected to the seat sponge (1), the upper surface of the felt (201) is fixedly connected to a wind-guiding mesh layer (202), the wind-guiding mesh layer (202) is set in the ventilation groove group (102), the felt (201) is fixedly connected to a fan seat (3), and the fan seat (3) is fixedly connected to a fan (4).

2. The automotive seat ventilation structure according to claim 1, characterized in that, The ventilation slot group (102) is arranged in a horizontal direction, and the first ventilation hole (101) passes through the entire seat sponge (1) and is connected to the ventilation slot (102).

3. The automotive seat ventilation structure according to claim 2, characterized in that, The ventilation slot group (102) includes several sets of vertical ventilation slots (1021) arranged at intervals, and horizontal ventilation slots (1022) connected to the vertical ventilation slots (1021); the air guide mesh layer (202) includes several sets of vertical air guide strips (2021) arranged at intervals, and horizontal air guide strips (2022) connected to the vertical air guide strips (2021); the vertical ventilation strips (2021) are adapted to the vertical ventilation slots (1021), and the horizontal air guide strips (2022) are adapted to the horizontal ventilation slots (1022).

4. The automotive seat ventilation structure according to claim 1, characterized in that, The air guide mesh layer (202) is provided with a three-dimensional mesh structure formed by supporting connecting wires, and the mesh inside the air guide mesh (202) is interconnected to achieve airflow communication.

5. The automotive seat ventilation structure according to claim 1, characterized in that, The thickness of the felt (201) is 2.0-2.5 mm, the thickness of the air guide mesh layer (202) is 10 mm, and the depth of the ventilation slot group (102) is 10-11 mm.

6. The automotive seat ventilation structure according to claim 1, characterized in that, The air guide mesh layer (202) is fixedly connected to the upper surface of the felt (201) by adhesive, and the upper surface of the felt (201) is provided with a number of adhesive dots (204) at intervals.

7. The automotive seat ventilation structure according to claim 1, characterized in that, The upper end of the seat sponge (1) is provided with a sponge pad (5), and a second ventilation hole (501) is provided on the sponge pad (5) at the position corresponding to the ventilation hole (101).

8. The automotive seat ventilation structure according to claim 1, characterized in that, The edge of the upper surface of the felt (201) is fixedly connected to the bottom of the seat sponge (1) by double-sided adhesive (203).

9. The automotive seat ventilation structure according to claim 1, characterized in that, The fan base (3) includes a ventilation pipe (301), and a fixing plate (302) is fixedly installed on the ventilation pipe (301). One end of the ventilation pipe (301) is fixedly connected to the air outlet of the fan (4), and the other end of the ventilation pipe (301) passes through the felt (201) and communicates with the ventilation slot assembly (102). The fixing plate (302) is fixedly connected to the felt (201) by sewing.

10. A vehicle characterized in that, The vehicle is equipped with a car seat ventilation structure according to any one of claims 1 to 9.

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