Double-layer hollow automobile front windshield lower decorative plate structure and automobile body

Abstract

The application discloses a double-layer hollow automobile front windshield lower decorative plate structure and a vehicle body, relates to the technical field of automobile exterior decoration, and comprises a front windshield lower decorative plate body, an air inlet hole area is arranged on the front windshield lower decorative plate body, and a hollow double-layer water retaining dam is arranged outside the air inlet hole area; the hollow double-layer water retaining dam comprises a first layer water retaining structure and a second layer water retaining structure arranged in sequence, the second layer water retaining structure is a single-layer plate structure and is provided with a grating area; a cavity is formed in the first layer water retaining structure, and the first layer water retaining structure forms a double-layer plate structure along the thickness direction thereof; and the first layer water retaining structure is alternately provided with convex portions and concave portions corresponding to the grating area. The application meets the air conditioning air inlet requirement under the condition of small space, meets the European Union five-star collision requirement, and avoids that the front compartment exhaust gas enters the air conditioning pollution room to pollute indoor air.

Description

Technical Field

[0001] This invention relates to the field of automotive exterior technology, and in particular to a double-layer hollowed-out automotive windshield lower decorative panel structure and vehicle body. Background Technology

[0002] Because the front compartment needs to integrate multiple components such as the engine, transmission, controller, electrical box, condenser, and air conditioning system, the space for the lower windshield trim panel is significantly reduced. Furthermore, users are increasingly demanding higher levels of intelligence and comfort from automotive air conditioning systems. For example, after the vehicle has been parked for a period of time, the air conditioning should automatically activate when the driver approaches to ventilate the cabin; stringent requirements are placed on the air intake volume. This ventilation function is only effectively triggered when the occupant is on the driver's side and sufficiently close to the vehicle. Under this triggering logic, the effective ventilation time is no more than 5 seconds. Therefore, completing a full replacement of the cabin air in a very short time is extremely difficult. Typically, the only way to optimize the ventilation effect is to increase the air conditioning operating power and, within design limits, enlarge the air intake and duct cross-section as much as possible, further reducing the installation space for the lower windshield trim panel and other surrounding components. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a double-layer hollowed-out automotive windshield lower decorative panel structure and vehicle body that meets the air conditioning intake requirements within a relatively small space; at the same time, it meets the EU five-star crash test requirements and avoids the problem of exhaust gas from the front compartment entering the air conditioning system and polluting indoor air.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0005] In a first aspect, embodiments of the present invention provide a double-layer hollowed-out automotive front windshield lower decorative panel structure, including a front windshield lower decorative panel body, wherein the front windshield lower decorative panel body is provided with an air intake area, and a hollowed-out double-layer water barrier is provided on the outer side of the air intake area;

[0006] The hollow double-layer water-retaining dam includes a first layer of water-retaining structure and a second layer of water-retaining structure arranged in sequence. The second layer of water-retaining structure is a single-layer plate structure and has a grid area. The first layer of water-retaining structure forms a cavity inside and forms a double-layer plate structure along its thickness direction. The first layer of water-retaining structure has convex and concave parts alternately arranged corresponding to the grid area.

[0007] As a further implementation, the height of the single-layer plate structure is greater than the height of the double-layer plate structure, thereby allowing the single-layer plate structure to provide a cover.

[0008] As a further implementation, the width of the hollow portion of the grille area is greater than the width of the non-hollow portion.

[0009] As a further implementation, the width of the convex portion is greater than the width of the concave portion.

[0010] As a further implementation, the air intake area is provided with several honeycomb hexagonal air intake holes, and the back of the air intake hole is provided with a step and a Z-direction reinforcing rib.

[0011] As a further implementation, a water trough is provided on the side of the air intake area near the hollow double-layer water barrier, and a water leakage hole is provided at the end of the water trough, and the water leakage hole is located at the lowest point of the front windshield lower trim panel body.

[0012] As a further implementation, the lower windshield trim panel body is also equipped with a front sealing structure, which includes a sealing strip, a first sealing block and a second sealing block;

[0013] The sealing strip is located on the opposite side of the hollow double-layer water-retaining dam, and the first sealing block and the second sealing block are respectively located at both ends of the sealing strip.

[0014] As a further implementation, the shapes of the first and second sealing blocks are adapted to the shape of the cap edge;

[0015] The sealing strip contains a bubble tube, and the sealing strip is detachably connected to the lower trim panel of the front windshield.

[0016] As a further implementation, the lower windshield trim panel body is provided with a shock absorber access cover.

[0017] Secondly, embodiments of the present invention also provide a vehicle body on which the aforementioned lower windshield trim panel structure is installed.

[0018] The beneficial effects of this invention are as follows:

[0019] The windshield lower trim panel of this invention features a hollowed-out double-layer water barrier on the outer side of the air intake area. The hollowed-out double-layer water barrier includes a first-layer water barrier structure and a second-layer water barrier structure arranged sequentially. The second-layer water barrier structure is a single-layer plate structure and has a grille area. The first-layer water barrier structure is a double-layer plate structure, and the first-layer water barrier structure has alternating convex and concave parts corresponding to the grille area. By designing a hollowed-out double-layer plus single-layer water barrier structure, the safety performance of the front collision is improved, meeting the European and American five-star standards, and the overall vehicle safety performance is improved, while meeting the air conditioning intake requirements under limited space conditions. Attached Figure Description

[0020] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0021] Figure 1(a) is a cross-sectional view of a traditional lower windshield trim panel;

[0022] Figure 1(b) is a schematic diagram of the water channel arrangement of the traditional lower windshield trim panel;

[0023] Figure 2 This is a schematic diagram of the structure of the lower windshield decorative panel according to one or more embodiments of the present invention;

[0024] Figure 3 This is a schematic diagram of a hollow double-layer water-retaining dam structure according to one or more embodiments of the present invention;

[0025] Figure 4 This is a perspective view of the arrangement of the grille area and the protrusions and recesses according to one or more embodiments of the present invention;

[0026] Figure 5 This is a front view of the arrangement of the grille area and the protrusions and recesses according to one or more embodiments of the present invention;

[0027] Figure 6 yes Figure 5 AA section view;

[0028] Figure 7 yes Figure 5 BB cross-sectional view;

[0029] Figure 8 This is a schematic diagram of the water inlet area structure according to one or more embodiments of the present invention;

[0030] Figure 9 This is a schematic diagram of the shock absorber arrangement according to one or more embodiments of the present invention.

[0031] The components include: 1. Lower windshield trim panel; 2. Water channel; 3. Sealing sponge; 4. Air intake; 5. Hollowed-out double-layer water barrier; 6. Water drain; 7. Leakage hole; 8. First sealing block; 9. Second sealing block; 10. Sealing strip; 11. Shock absorber access cover; 12. First layer water barrier structure; 13. Second layer water barrier structure; 14. Grille area; 15. Hollowed-out part; 16. Non-hollowed-out part; 17. Protrusion; 18. Recess; 19. Step; 20. Z-direction reinforcing rib; 21. Shock absorber. Detailed Implementation

[0032] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0033] For ease of description, the terms "front," "rear," "left," and "right" appearing in this invention only indicate that they correspond to the front, rear, left, and right directions of the accompanying drawings themselves. They do not limit the structure and are merely used to facilitate the description of the invention and to simplify the description. They do not indicate or imply that the device or component 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 the invention. In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] Example 1:

[0035] As shown in Figures 1(a) and 1(b), the existing lower windshield trim panel has a drainage channel 2 and a sealing sponge 3. This results in high unit cost and assembly costs, and requires sufficient space for the drainage channel 2, making it unsuitable for new vehicle development, especially for applications of new energy technologies. The existing lower windshield trim panel is limited by the space occupied by the air conditioning intake system, and the design constraints further restrict installation space, leading to limited overall layout space. Traditional gravity-based drainage structures, due to space limitations, cannot meet the design requirements for drainage channel width and angle, making it difficult to satisfy the vehicle's drainage needs. Furthermore, to improve aesthetics, the trim panel must completely cover the gap between the hood and the front compartment, potentially causing excessive structural strength in the front compartment, which does not comply with safety regulations, making it difficult to balance aesthetics and passive safety performance. Moreover, in a highly competitive market, products must simultaneously meet multiple performance indicators such as space, drainage, and safety, while also optimizing costs, making this a challenging task.

[0036] Based on this, this embodiment provides a double-layer hollowed-out decorative panel structure for the lower part of the car windshield. It adopts a water-dam structure with a single layer plus a double layer of panels to solve the problem that the water-dam structure is too strong and cannot meet the collision requirements of safety regulations. At the same time, the traditional water channel 2 is eliminated, and the water channel 6 and the drainage hole 7 are designed using the principle of gravity drainage to achieve efficient drainage in a limited space and completely solve the problem of insufficient space.

[0037] like Figures 2-9 As shown, the double-layer hollowed-out lower windshield trim panel structure of this embodiment mainly includes a lower windshield trim panel body 1. The lower windshield trim panel body 1 is provided with an air intake area to match the air intake requirements of the air conditioning system and ensure the supply of fresh air for the air conditioning in the vehicle. A hollowed-out double-layer water barrier 5 is provided on the outside of the air intake area. The hollowed-out double-layer water barrier 5 can effectively shield the internal structure of the engine compartment, prevent internal parts from being exposed and affecting the consistency of the vehicle's appearance, and also meet the drainage function during vehicle operation, preventing rainwater and splashing mud from entering the engine compartment and air conditioning intake system. At the same time, it can also ensure the smooth flow of air conditioning intake. Furthermore, the structural design can weaken the overall strength and achieve controllable crumpling during a collision, meeting the five-star collision safety standards at home and abroad, and achieving a dual balance between function and safety.

[0038] Specifically, such as Figure 2 As shown, one end of the lower windshield trim panel body 1 is provided with an air intake area of ​​a certain range. The specific range of the air intake area depends on the air conditioning intake requirements. For example, the air intake area is designed within a range of 58mm*759mm of the lower windshield trim panel body 1. This size range can achieve the optimal supply of air conditioning intake while ensuring structural strength, and is suitable for the air conditioning system requirements of most compact and mid-size cars.

[0039] The air intake area has a number of air intake holes 4 evenly distributed. In this embodiment, the air intake holes 4 adopt a honeycomb hexagonal structure design. On the one hand, the honeycomb structure is evenly stressed, which can maximize the structural strength of the front windshield trim panel body 1 even with dense openings, and avoid local structural weakness and easy deformation due to too many openings. On the other hand, the honeycomb hexagon has a higher opening rate, and more air intake holes can be arranged in the same area, which can effectively increase the air intake area and ensure smooth air intake of the air conditioner. At the same time, the hexagonal structure can also play a certain role in blocking rainwater and small debris, reducing the entry of debris into the air conditioning intake system and extending the service life of the air conditioning filter.

[0040] like Figure 8 As shown, in order to solve the process problems in the product manufacturing process and at the same time ensure the integrity and aesthetics of the product appearance, a step 19 is provided on the back of the honeycomb hexagonal air inlet 4. The shape of the step 19 is perfectly matched with the shape of the air inlet 4. The height of the step 19 is generally set to 2~3mm. This can effectively solve the problems of demolding difficulties and surface scratches that occur in the product pulling process, ensure that the product can be demolded smoothly, improve the production qualification rate, and hide the process wiring and mold closing marks generated in the production process.

[0041] Meanwhile, Z-direction reinforcing ribs 20 are evenly arranged on the outer side of step 19. The extension direction of the Z-direction reinforcing ribs 20 is perpendicular to the surface of the front windshield lower trim panel body 1. This can effectively solve the problem of weak local strength and easy deformation of the product caused by the dense air intake holes 4, improve the overall rigidity and deformation resistance of the front windshield lower trim panel body 1, and prevent the air intake hole area from deforming or cracking due to airflow impact or road bumps during high-speed driving, thus affecting the service life and performance of the product.

[0042] To clearly describe the positional relationships of the components, this embodiment uses the normal driving direction of the vehicle as a reference, defining the side facing the windshield as the rear side and the side away from the windshield as the front side, with the left-right direction consistent with the left-right direction of the vehicle body. The air intake area is mainly located at the left end of the lower windshield trim panel 1. This area is the main air intake area for the air conditioning system, therefore its coverage is relatively large, sufficient to meet the maximum air intake requirements of the air conditioning system.

[0043] like Figure 2and Figure 3 As shown, the right end of the lower windshield trim panel 1 is also provided with several air intake holes 4. The coverage area of ​​the air intake hole area here is smaller than that of the air intake hole 4 on the left end. The main reason is that the engine compartment space on the right end of the vehicle body is relatively narrow and has more components (such as steering system, braking system pipelines, etc.), which cannot accommodate an excessively large air intake hole area. At the same time, the air intake hole on the right end mainly plays the role of auxiliary air intake and does not need to cover too much area. This allows for better matching with the vehicle body structure and component layout, achieving reasonable use of space, while also ensuring the overall air intake requirements of the air conditioning system.

[0044] like Figure 2 As shown, a drainage channel 6 is provided corresponding to the air intake area on the right side of the lower windshield trim panel 1. The drainage channel 6 is elongated, and several drainage holes 7 are provided on the right end of the drainage channel 6. The design height of the drainage channel 6 is lower than that of the hollow double-layer water barrier 5, so that the drainage holes 7 are located at the lowest point of the lower windshield trim panel 1. When rainwater or splashing mud enters the inner side of the hollow double-layer water barrier 5, it will naturally flow to the lower drainage channel 6 under the action of gravity, and then be discharged directly outside the vehicle through the drainage holes 7 on the right end of the drainage channel 6.

[0045] like Figures 3-5 As shown, the hollow double-layer water barrier 5 is arranged on the rear side of the air intake area and extends along the length of the windshield. In this embodiment, the hollow double-layer water barrier 5 consists of a first-layer water-blocking structure 12 and a second-layer water-blocking structure 13. The first-layer water-blocking structure 12 is located in front of the second-layer water-blocking structure 13, i.e., on the side closer to the air intake area. The height of the second-layer water-blocking structure 13 is greater than the height of the first-layer water-blocking structure 12. Because the first-layer water-blocking structure 12 adopts a double-layer plate structure, it has high structural rigidity and deformation resistance. Therefore, the height of the single-layer second-layer water-blocking structure 13 can be made higher. This design can effectively conceal the front valve cover and other components inside the engine compartment, making the front of the vehicle look cleaner and more uniform, avoiding the exposure of internal features and affecting aesthetics. At the same time, the higher second-layer water-blocking structure 13 can also effectively block rainwater and splashing mud from directly impacting the air intake area, acting as the first water barrier and improving the water-blocking effect.

[0046] Furthermore, because the single-layer second-layer water-blocking structure 13 is equipped with a grille area 14, and the grille area 14 adopts a hollow design, the second-layer water-blocking structure 13 can quickly collapse and absorb energy when subjected to external impact (such as when a vehicle collides with a pedestrian), absorbing most of the impact force generated by the collision, thereby reducing the injury to pedestrians, achieving the five-star collision safety standard in Europe and the United States, and meeting the requirements of pedestrian protection regulations.

[0047] The grille area 14 corresponds to the air inlet area on the right end, and its coverage area is larger than that of the air inlet area on the right end. This ensures unobstructed airflow to the air inlet area and allows the grille area 14 to fully cover the air inlet area, providing better water blocking and energy absorption during collapse. The hollow double-layer water-retaining dam 5 structure of this embodiment can replace the traditional two-color injection molding process, which uses hard and soft rubber. Traditional two-color injection molding requires specialized two-color injection molds, resulting in complex production processes and high manufacturing costs. In contrast, the hollow double-layer water-retaining dam 5 of this embodiment uses integrated injection molding, simplifying the production process, reducing mold costs and unit production costs, and avoiding problems such as separation of hard and soft rubber and loose bonding that may occur in two-color injection molding.

[0048] Furthermore, the first-layer water-blocking structure 12 is arranged on the rear side of the drainage trough 6 and has a certain height, which can effectively prevent rainwater from crossing the first-layer water-blocking structure 12 and entering the air intake area, thus acting as a second water-blocking barrier. Figures 3-6 As shown, the first-layer water-blocking structure 12 is a raised structure relative to the surface of the lower windshield trim panel 1, and its interior is a cavity design, thus forming a double-layer panel structure in the thickness direction. This double-layer panel and cavity structure has the following effects:

[0049] On the one hand, the double-layered wall structure enhances the local structural rigidity and deformation resistance of the first-layer water-blocking structure 12, preventing deformation or damage during vehicle operation due to airflow impact, road bumps, or component collisions. On the other hand, the internal cavity effectively reduces the overall weight of the parts, meeting the lightweight requirements of automotive components. Furthermore, the first-layer water-blocking structure 12 features alternating protrusions 17 and recesses 18 along its length. This alternating arrangement not only further enhances the structural rigidity of the first-layer water-blocking structure 12 but also guides rainwater to flow quickly into the drainage trough 6, improving drainage efficiency.

[0050] like Figures 3-7 As shown, the second-layer water-blocking structure 13 is a single-layer plate structure, which, together with the double-layer plate structure of the first-layer water-blocking structure 12, forms a "double-layer + single-layer" composite water-blocking structure. The second-layer water-blocking structure 13 has a relatively high overall height, which can effectively shield the internal features of the engine compartment, prevent internal components from being exposed, and improve the appearance quality of the vehicle. At the same time, since the second-layer water-blocking structure 13 is a single-layer plate and has a grille area 14, its structural strength is relatively weak, making it more prone to controllable deformation and collapse when subjected to external impact, effectively absorbing collision impact force. In addition, the single-layer plate structure can also reduce the weight of parts, helping to achieve lightweighting, and the production process is simpler, reducing manufacturing costs.

[0051] The second-layer water-blocking structure 13 has a grille area 14 corresponding to the protrusions 17 and concave portions 18 of the first-layer water-blocking structure 12, realizing the dual functions of water blocking and air intake. The grille area 14 is composed of alternating hollow portions 15 and non-hollow portions 16, that is, a non-hollow portion 16 is provided between adjacent hollow portions 15. The lengths of the hollow portions 15 and non-hollow portions 16 are adapted to the lengths of the protrusions 17 and concave portions 18, ensuring that each protrusion 17 and concave portion 18 can correspond to a hollow portion 15 or a non-hollow portion 16 of the grille area 14.

[0052] Among them, for two adjacent hollowed-out portions 15, one corresponds to the concave portion 18 of the first layer of water-blocking structure 12, and the other corresponds to the convex portion 17. This design forms a staggered air intake channel, which can ensure the smooth flow of air into the air conditioning system. The staggered arrangement of the hollowed-out portions 15 can increase the effective air intake area, ensuring that the air conditioning system can draw in enough fresh air to meet the fresh air requirements of the vehicle. At the same time, through the staggered arrangement of the concave and convex structures and the grille, multiple levels of blocking can be formed against rainwater and splashing mud. When rainwater and mud impact the grille area 14 of the second layer of water-blocking structure 13, part of it will be blocked by the non-hollowed-out portion 16, and the other part will enter between the two layers of water-blocking structure through the hollowed-out portion 15. Then, it will be blocked and guided to the concave portion 18 by the convex portion 17 of the first layer of water-blocking structure 12, and then discharged through the water dropper 6. This prevents rainwater from directly entering the air intake area, effectively improving the water blocking and guiding effect, and preventing rainwater from entering the air conditioning intake system and the interior of the engine compartment.

[0053] In this embodiment, the width of the protrusion 17 is greater than the width of the recess 18. This is because the greater width of the protrusion 17 enhances the local rigidity of the first-layer water-blocking structure 12, preventing the protrusion 17 from deforming due to excessive force. It also better coordinates with the grille area 14 of the second-layer water-blocking structure 13, ensuring the rationality of the staggered air intake channel. When rainwater and splashing mud impact the first-layer water-blocking structure 12, the wider protrusion 17 plays a major blocking role, blocking most of the rainwater and mud on its outer side, and then guiding it to the narrower recess 18. The recess 18, acting as a rainwater guide channel, quickly guides the rainwater to the drainage trough 6, and then discharges it outside the vehicle through the drain hole 7, further improving drainage efficiency.

[0054] Meanwhile, the grille area 14 adopts a structure in which hollow parts 15 and non-hollow parts 16 are arranged alternately. While ensuring smooth air intake and reducing the weight of parts, the non-hollow parts 16 form a continuous reinforcing rib structure. These non-hollow parts 16 are interconnected and run through the entire grille area 14, which can effectively improve the overall rigidity and deformation resistance of the second water-blocking structure 13. This prevents the grille area 14 from deforming, cracking, or even producing abnormal noises due to road bumps, airflow impact, or component vibration during vehicle operation, thus affecting the product's service life and driving experience.

[0055] like Figures 2-4 As shown, in order to effectively isolate the cabin from the air conditioning intake area and prevent exhaust gases from the cabin from entering the air conditioning system and subsequently the passenger compartment, thus affecting the safety and comfort of the occupants, a front sealing structure is installed on the lower windshield trim panel 1. This front sealing structure includes a sealing strip 10, a first sealing block 8, and a second sealing block 9. These three components work together to form a complete sealed structure, completely isolating the cabin from the air conditioning intake area.

[0056] Specifically, the first sealing block 8 is located at one end (left end) of the hollow double-layer water barrier 5, and the second sealing block 9 is located at the other end (right end) of the hollow double-layer water barrier 5. The sealing strip 10 is connected between the first sealing block 8 and the second sealing block 9 and is located on the front side of the lower windshield trim panel 1, and is tightly fitted with the lower windshield trim panel 1. Finally, the sealing strip 10, the first sealing block 8, the second sealing block 9 and the hollow double-layer water barrier 5 form a closed structure, which completely wraps the air conditioning intake area inside the closed structure, ensuring that the exhaust gas in the cabin cannot enter the area.

[0057] Both the first sealing block 8 and the second sealing block 9 are located at the edge of the lower windshield trim panel 1. Their shapes perfectly match the edge shape of the front cabin valve cover. They are manufactured using injection molding and are made of the same material as the lower windshield trim panel 1, ensuring structural compatibility and connection strength. The first sealing block 8 and the second sealing block 9 connect between the hollow double-layer water barrier 5 and the sealing strip 10. One end of each block is tightly connected to the end of the hollow double-layer water barrier 5, and the other end is tightly fitted to the end of the sealing strip 10. The connection uses a transition design to avoid gaps and ensure a sealing effect. When the front cabin valve cover is closed, the first sealing block 8 and the second sealing block 9 fit tightly against the front cabin valve cover, effectively sealing against rainwater, mud, and cabin exhaust gas from entering the air conditioning intake area through edge gaps. In addition, the surfaces of the first sealing block 8 and the second sealing block 9 have anti-slip textures, which enhance the fit with the front cabin valve cover, improve the sealing effect, and prevent the front cabin valve cover from sliding when closed, ensuring the stability of the seal.

[0058] In this embodiment, the sealing strip 10 is made of rubber, which has good elasticity, sealing properties, and aging resistance. It can adapt to various environmental changes during vehicle operation (such as high and low temperatures, humidity changes, etc.) and is not easily deformed or cracked after long-term use, ensuring the stability of the sealing effect. The sealing strip 10 is provided with multiple mounting buckles, which are evenly distributed on the inner side of the sealing strip 10. These mounting buckles enable a detachable connection with the front windshield lower trim panel body 1. This detachable design facilitates the disassembly, replacement, and maintenance of the sealing strip 10. The inner side of the sealing strip 10 is provided with a bubble tube. The bubble tube has a hollow structure and good elasticity and compression properties. When the front compartment valve cover is closed, the bubble tube will be squeezed by the front compartment valve cover and undergo elastic deformation, tightly filling the gap between the sealing strip 10 and the front compartment valve cover, further improving the sealing effect and preventing rainwater, mud, and engine compartment exhaust gas from seeping in.

[0059] In addition, the lower windshield trim panel of traditional vehicles is mostly a one-piece design. This design has a significant drawback: the installation and adjustment of the shock absorber 21 requires the removal of the entire lower windshield trim panel. Removing the lower windshield trim panel requires first removing the wipers, wiper arms, and other components. The whole process is very cumbersome and time-consuming. It not only increases the workload of assembly and maintenance, but may also damage the lower windshield trim panel, wipers, and other components during the removal process, increasing maintenance costs.

[0060] To solve the above problems, such as Figure 3 and Figure 9 As shown, the lower windshield trim panel body 1 in this embodiment is specially equipped with a shock absorber access cover 11. The position of the shock absorber access cover 11 corresponds to the installation position of the shock absorber 21. Its size is designed according to the maintenance requirements of the shock absorber 21 to ensure that the adjustment and installation parts of the shock absorber 21 can be fully exposed, facilitating operation by maintenance personnel. The shock absorber access cover 11 is connected to the lower windshield trim panel body 1 by a snap-fit ​​connection, which is convenient for disassembly and assembly. During vehicle assembly, the shock absorber 21 can be directly installed and adjusted by simply opening the shock absorber access cover 11. In subsequent maintenance, the shock absorber 21 can also be inspected, adjusted, and disassembled by simply opening the shock absorber access cover 11, without removing the entire lower windshield trim panel and wipers. This greatly improves the efficiency of shock absorber 21 maintenance and adjustment, and reduces maintenance costs and workload. Meanwhile, the design of the shock absorber access cover 11 also ensures the integrity and aesthetics of the overall lower windshield trim panel.

[0061] The working principle of this embodiment is as follows:

[0062] When the vehicle is driving in rainy weather or in a water-spraying environment, rainwater will flow down the windshield. Some of the rainwater will fall directly onto the surface of the lower windshield trim panel 1, while the other part of the rainwater will impact the second water-blocking structure 13 of the hollow double-layer water barrier 5. Because the second-layer water-blocking structure 13 has a grille area 14, some rainwater will be blocked by the non-perforated part 16 and flow down the surface of the second-layer water-blocking structure 13, eventually being discharged outside the vehicle through the water channel 6 and the drain hole 7; another part of the rainwater will enter the gap between the first-layer water-blocking structure 12 and the second-layer water-blocking structure 13 through the perforated part 15 of the grille area 14. At this time, the protrusion 17 of the first-layer water-blocking structure 12 will block the rainwater and guide most of the rainwater to the concave part 18. The concave part 18 acts as a guide channel, guiding the rainwater to the water channel 6, and then discharges it outside the vehicle through the drain hole 7 at the right end of the water channel 6. Through this gravity effect of the height difference, the rainwater can be discharged from the vehicle body quickly and efficiently, preventing rainwater from entering the engine compartment and air conditioning intake area.

[0063] Meanwhile, the front sealing structure (sealing strip 10, first sealing block 8, second sealing block 9) shields the exhaust gas in the front compartment from the outside of the engine compartment, preventing exhaust gas from entering the air conditioning intake area. Fresh air from outside the vehicle enters the inner side of the hollow double-layer water barrier 5 through the gap between the lower windshield trim panel and the front compartment valve cover, as well as the grille area 14 of the second water barrier structure 13. It is then delivered to the air conditioning intake system through the air intake area of ​​the lower windshield trim panel body 1, ensuring and meeting the fresh air requirements of the air conditioning system and providing fresh and clean air for the occupants. In the event of a collision, the double-layer hollow lower windshield trim panel can effectively protect pedestrians.

[0064] The front windshield trim panel structure of this embodiment can perfectly meet the air conditioning intake requirements under limited space conditions; the hollow double-layer water dam 5 with double-layer panel + single-layer panel eliminates the traditional water channel 2, greatly saving engine compartment space and providing convenience for the arrangement of other components in the engine compartment; at the same time, by designing the water channel 6 with height difference, the evenly distributed water leakage holes 7 and the honeycomb air intake area, rainwater can be discharged from the vehicle body to the maximum extent, preventing rainwater from entering the engine compartment, thereby avoiding the problem of short circuit and damage to electronic components in the engine compartment due to water ingress, and improving the reliability and safety of the vehicle.

[0065] In addition, the front sealing structure design effectively prevents rainwater from entering the air conditioning intake and being sucked into the passenger compartment, while also preventing exhaust fumes from entering the air conditioning system and polluting the indoor air, thus ensuring the health and comfort of the occupants.

[0066] Example 2:

[0067] This embodiment provides a vehicle body, including a vehicle body, a front compartment assembly, a windshield, a front hood, a front bulkhead, a fender, and the lower windshield trim panel structure described in Embodiment 1.

[0068] Specifically, the vehicle body serves as the main load-bearing structure, with a front compartment mounting space at its front. The front compartment assembly is located within this space, and the front bulkhead is situated behind it, separating the front compartment from the passenger compartment. The windshield is mounted obliquely at the upper front of the vehicle body, with its lower edge forming an assembly area between it and the upper edge of the front bulkhead. The hood is hinged to the upper front of the vehicle body and can be flipped up to cover the front compartment assembly. A pre-installed assembly gap is provided between the rear edge of the hood and the lower edge of the windshield.

[0069] The lower windshield trim panel is positioned along the lower edge of the windshield and within the assembly gap between it and the rear edge of the hood. The lower windshield trim panel body 1 is fixed to the vehicle body via clips, positioning structures, and fasteners. Its sides extend to the inner side of the fenders and transition seamlessly with the surrounding body parts. The air intake area on the lower windshield trim panel body 1 corresponds to the air conditioning intake of the vehicle body. Fresh air from outside passes sequentially through the hollowed-out double-layer water barrier 5, the air intake area, and the vehicle body's air conditioning intake to enter the air conditioning intake duct, thus delivering clean air to the passenger compartment. Exhaust gas and hot air in the front compartment are blocked by the hollowed-out double-layer water barrier 5 and the front sealing structure, preventing them from entering the air conditioning intake duct and thus avoiding exhaust gas from entering the passenger compartment.

[0070] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A double-layer hollowed-out decorative panel structure for a car windshield, characterized in that, Includes a lower windshield trim panel body, wherein the lower windshield trim panel body is provided with an air intake area, and a hollow double-layer water barrier is provided on the outer side of the air intake area; The hollow double-layer water-retaining dam includes a first layer water-retaining structure and a second layer water-retaining structure arranged sequentially. The second layer water-retaining structure is a single-layer plate structure and has a grid area. The first layer water-retaining structure has a cavity inside and forms a double-layer plate structure along its thickness direction. The first layer water-retaining structure has convex and concave parts alternately arranged corresponding to the grid area. The first water-blocking structure is located in front of the second water-blocking structure, that is, on the side near the air intake area. The height of the second water-blocking structure is higher than that of the first water-blocking structure. The grille area is composed of alternating hollow and non-hollow parts. The lengths of the hollow and non-hollow parts are adapted to the lengths of the convex and concave parts. For two adjacent hollow parts, one corresponds to the concave part of the first water-blocking structure, and the other corresponds to the convex part.

2. The double-layer hollowed-out decorative panel structure for a car windshield according to claim 1, characterized in that, The height of the single-layer plate structure is greater than that of the double-layer plate structure, thereby allowing the single-layer plate structure to cover the hair.

3. A double-layer hollowed-out decorative panel structure for a car windshield according to claim 1 or 2, characterized in that, The width of the openwork portion of the grille area is greater than the width of the non-openwork portion.

4. A double-layer hollowed-out decorative panel structure for a car windshield according to claim 1 or 2, characterized in that, The width of the convex part is greater than the width of the concave part.

5. The double-layer hollowed-out decorative panel structure for a car windshield according to claim 1, characterized in that, The air intake area is provided with several honeycomb hexagonal air intakes, and the back of the air intake is provided with a step and a Z-direction reinforcing rib.

6. A double-layer hollowed-out decorative panel structure for a car windshield according to claim 1 or 5, characterized in that, A water inlet trough is provided on the side of the air intake area near the hollow double-layer water barrier. A water leakage hole is provided at the end of the water inlet trough, and the water leakage hole is located at the lowest point of the front windshield lower trim panel.

7. The double-layer hollowed-out decorative panel structure for a car windshield according to claim 1, characterized in that, The lower trim panel body of the front windshield is also equipped with a front sealing structure, which includes a sealing strip, a first sealing block and a second sealing block. The sealing strip is located on the opposite side of the hollow double-layer water-retaining dam, and the first sealing block and the second sealing block are respectively located at both ends of the sealing strip.

8. The double-layer hollowed-out decorative panel structure for a car windshield according to claim 7, characterized in that, The shapes of the first and second sealing blocks are adapted to the shape of the cap edge; The sealing strip contains a bubble tube, and the sealing strip is detachably connected to the lower trim panel of the front windshield.

9. The double-layer hollowed-out decorative panel structure for a car windshield according to claim 1, characterized in that, The lower trim panel of the front windshield is equipped with a shock absorber access cover.

10. A vehicle body, characterized in that, The front windshield lower trim panel structure as described in any one of claims 1-9 is installed.

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