Vehicle

Abstract

The invention discloses a vehicle which comprises a cargo tank, and the cargo tank comprises a cargo tank front plate and a cargo tank top plate. The vehicle head comprises a vehicle head ceiling; the vehicle further comprises a guiding device for guiding airflow. The guide device is mounted on the container; and at least part of the guide device is higher than the container top plate, so that the airflow separation point is lifted and moved backwards relative to a transition area of the container front plate and the container top plate. When a vehicle runs, airflow encounters the situation of sudden path change or overlarge air pressure on the surface of the vehicle, a turbulent flow area can be generated on a container top plate, and pulsating pressure generated by the turbulent flow area causes deformation vibration of the container top plate to generate noise. And the separation point of the air flow can be lifted and moved backwards, so that the turbulence area is lifted, and the vibration of the container top plate caused by pulsating pressure is obviously reduced.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and specifically relates to a vehicle. Background Art

[0002] With the increase in vehicle speed, aerodynamics must be considered in vehicle design. However, in the actual driving process of the vehicle, the air will inevitably disturb each other, and air convection will occur between layers. This flow is called turbulence. Turbulence is a bad flow. There are many small vortices in the flow field, the laminar flow is destroyed, and there is not only sliding but also mixing between adjacent laminar flows. This is the irregular movement of the fluid, which is caused by the component velocity perpendicular to the axis of the flow tube. Therefore, in automobile design, turbulence should be avoided as much as possible.

[0003] Application document CN220826597U discloses "a deflector for solving turbulence in van trucks". It sets a deflector above the van truck cab and opens an air inlet on the deflector so that when the vehicle is driving, the gas enters the deflector pipe in the deflector through the air inlet. The deflector pipe guides the airflow to the position where turbulence occurs. By adding a stronger airflow, the turbulence between the rear wall of the cab and the cargo box becomes laminar flow, thereby alleviating the problem of turbulence formed behind the cab and affecting driving. It only solves the turbulence problem generated between the rear wall of the cab and the front panel of the cargo box. When the vehicle is driving, the airflow encounters a sudden change in path or excessive air pressure on the surface of the vehicle, which will generate a turbulent area on the top plate of the cargo box. The pulsating pressure generated in the turbulent area causes the deformation and vibration of the cargo box top plate to generate noise. However, the technical solution of the prior art cannot solve the vibration of the cargo box top plate caused by the pulsating pressure generated by turbulence above the cargo box top plate of the van truck. Summary of the invention

[0004] The present application provides a vehicle to solve the technical problem of how to reduce the vibration of the cargo box roof caused by the pulsating pressure generated in the turbulent area during the driving of the truck.

[0005] The technical solution adopted in this application is:

[0006] A vehicle comprising:

[0007] A cargo box, the cargo box comprising a cargo box front plate and a cargo box top plate;

[0008] A front part of the vehicle, the front part of the vehicle comprising a front roof;

[0009] Characterized in that the vehicle further comprises a guide device for guiding the airflow;

[0010] The guide device is installed on the cargo box; and / or, the guide device is installed on the front of the vehicle;

[0011] The guide device is at least partially higher than the cargo box top plate, so that when the airflow flows from front to back through the guide device during vehicle driving, the airflow separation point is lifted and moved backward relative to the transition area between the cargo box front plate and the cargo box top plate.

[0012] A vehicle described in this application also includes the following additional technical features:

[0013] Optionally, the guide device includes a lifting portion extending toward the cargo box top plate and located above the cargo box top plate, the highest point of the guide device is located at the lifting portion, and the airflow separation point is located above the lifting portion, so that the airflow generates an airflow separation zone that is at least partially located behind the lifting portion after passing through the airflow separation point, and a highly elevated airflow turbulence zone is formed between the airflow separation zone and the cargo box top plate.

[0014] Optionally, an airflow reattachment point may be formed after the airflow descends, and the ratio of the height of the lifting portion to the length of the cargo box top plate is set to 1:800 to 1:1500, so that the airflow reattachment point is close to the rear edge of the cargo box top plate or is located on the outside of the cargo box top plate.

[0015] Optionally, the guide device also includes a central drainage portion and side drainage portions extending from the central drainage portion to two opposite sides of the central drainage portion, and the cargo box also includes cargo box side panels located on two opposite sides of the cargo box; the central drainage portion and the side drainage portions are both located in front of the cargo box front panel, and the central drainage portion protrudes forward relative to the side drainage portion, and the side drainage portions extend toward the direction of the cargo box side panels, so that part of the airflow passes through the side drainage portions and overflows to both sides of the cargo box.

[0016] Optionally, the guide device also includes a lifting portion respectively connected to the central drainage portion and the side drainage portion, at least a portion of the lifting portion is located above the cargo box top plate, and the lifting portion has a guide portion extending toward the cargo box side plate, and part of the airflow flows along the guide portion after passing through the airflow separation point and flows out to the outside of the cargo box top plate.

[0017] Optionally, the central drainage portion, the side drainage portion and the lifting portion are an integrally formed structure.

[0018] Optionally, the side drainage portion extends toward the cargo box side panel until the outer edge of the side drainage portion borders the outer edge of the cargo box front panel.

[0019] Optionally, the guide device is arranged in the cargo compartment, and at least a partial gap is maintained between the guide device and the rear side of the front of the vehicle.

[0020] Optionally, the guide device is arranged on the front roof of the vehicle, and a partial area of ​​the guide device extends to above the top plate of the cargo box.

[0021] Optionally, the height of the cargo box is H, the height difference between the lowest position of the guide device and the top plate of the cargo box is h, and the height difference h satisfies:

[0022] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0023] 1. After the guide device in the present application is installed, the guiding effect of the guide device on the airflow is particularly significant. By reasonably setting at least part of the guide device higher than the top plate of the cargo box, this design effectively lifts the turbulent area above the top plate of the cargo box, significantly reducing the impact of the turbulent area on the top plate of the cargo box. In traditional designs, the airflow directly impacts the front plate and transition area of ​​the cargo box, which easily forms a high-pressure area, causing the vehicle to become unstable when driving at high speeds. The present application avoids the concentration of airflow above the top plate of the cargo box by raising the separation point of the airflow and moving it backward, thereby reducing the impact of the airflow on the cargo box structure and improving the aerodynamic stability of the vehicle. This design not only helps to reduce air resistance during driving, but also significantly reduces energy consumption caused by turbulence and improves the overall fuel efficiency of the vehicle.

[0024] 2. As a preferred embodiment of the present application, the lifting portion of the guide device extends to the top of the cargo box roof and is specially designed to guide the rise of the airflow. When the airflow passes through the lifting portion, it first reaches the airflow separation point. Since the separation point is raised relative to the height of the cargo box roof, and the position of the separation point is shifted back relative to the transition area between the cargo box front plate and the roof plate, this design effectively lengthens the flow path of the airflow above the cargo box roof, slows down the change in airflow speed, and avoids turbulence caused by sudden changes in flow direction. The optimized airflow path allows the airflow to flow smoothly above the cargo box roof after passing the separation point, reducing the vortex and pulsating pressure of the airflow near the cargo box roof, reducing the turbulence intensity, and thus reducing the impact force on the cargo box roof. This design not only improves the aerodynamic performance of the vehicle during high-speed driving, but also effectively reduces the noise caused by unstable airflow impacting the cargo box roof, making the driving experience of passengers more stable and comfortable.

[0025] 3. As a preferred embodiment of the present application, the airflow will gradually drop after passing through the airflow separation zone, and form an airflow reattachment point on the top plate of the cargo box. By accurately adjusting the ratio between the height of the lifting portion and the length of the cargo box top plate, the airflow reattachment point can be gradually moved back to the rear edge of the cargo box top plate or located on the outside of the cargo box top plate. At the same time, by effectively controlling the position of the airflow reattachment point, the present application can also avoid uneven airflow pressure distribution in the top area of ​​the cargo box, further improving the durability of the cargo box structure and the overall aerodynamic stability of the vehicle. This design not only improves the safety of the vehicle, but also extends the service life of the cargo box.

[0026] 4. As a preferred embodiment of the present application, a central drainage part is provided in the middle of the guide device, and side drainage parts on two opposite sides are extended. The design of the central drainage part protruding forward effectively guides the airflow to contact and divert first, reducing the possibility of the airflow directly impacting the front plate of the cargo box. Through this convex design, the central drainage part preliminarily separates and guides the airflow before the airflow enters the transition area between the front plate and the top plate of the cargo box, thereby greatly reducing the air pressure fluctuation and turbulence formation in this area. This convex structural design can also make the airflow disperse more smoothly to both sides, and further guide the airflow to overflow to both sides of the cargo box through the side drainage part, reducing the accumulation and pressure concentration of the airflow in the transition area, and reducing the formation of turbulent areas. In addition, the convex design of the central drainage part helps to relieve the airflow speed in advance, so that it has been partially decelerated before reaching the separation point, which further reduces the impact of the airflow on the vehicle structure. This airflow design not only significantly improves the aerodynamic efficiency of the vehicle by optimizing the airflow path and reducing turbulence, but also reduces the noise generated by the airflow impacting the front plate of the cargo box during driving, and improves the ride comfort.

[0027] 5. As a preferred embodiment of the present application, the lifting portion of the guide device can not only be connected to the middle drainage portion and the side drainage portion respectively, but also form a highly coordinated airflow guiding system. At least part of the lifting portion is located above the top plate of the cargo box, and is designed with a guide portion extending toward the side plate of the cargo box. After the airflow passes through the airflow separation point, it will flow along the guide portion and eventually flow out of the outside of the cargo box top plate. Through this design, the air inflow above the cargo box top plate is further reduced, the intensity of the turbulent area formed by the airflow on the cargo box top plate is reduced, and the direction and speed of the air flow are effectively controlled. This synergistic effect not only reduces the pressure of the airflow on the cargo box top plate, but also optimizes the overall flow path of the airflow, reduces the air resistance of the vehicle at high speeds, and improves fuel efficiency.

[0028] 6. As a preferred embodiment of the present application, the central drainage part, the side drainage part and the lifting part are designed as an integrated unit to form a highly integrated airflow guiding device. This integrated design ensures the smoothness of the airflow as it flows through the path. Through the smooth airflow path design, the present application not only improves the efficiency of airflow guidance, but also further optimizes the aerodynamic performance of the cargo box roof, and reduces the air resistance and energy consumption of the vehicle during driving. This design can not only extend the service life of the guide device, but also provide a guarantee for the overall aerodynamic performance of the vehicle. In addition, through the integrated structural design, the guide device of the present application also has certain advantages in manufacturing process. The one-piece structure simplifies the production process, reduces the assembly time and cost of components, and improves the reliability and consistency of the product. This design is not only suitable for standardized production, but can also be flexibly adjusted according to the needs of different vehicles, and has broad application potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 This is a schematic diagram of the installation of a guide device on a cargo box in one embodiment of the present application;

[0031] Figure 2 A side view of a guide device according to an embodiment of the present application;

[0032] Figure 3 This is a front view of a guide device according to an embodiment of the present application;

[0033] Figure 4 A top view of a guide device according to an embodiment of the present application;

[0034] Figure 5 A front view of the direction of airflow above the top plate of the cargo box in one embodiment of the present application;

[0035] Figure 6 A top view of the flow direction of airflow above the top plate of the cargo box in one embodiment of the present application;

[0036] Figure 7 A top view of the direction of airflow on the front plate of the cargo box according to one embodiment of the present application.

[0037] in,

[0038] 1. Cargo box; 11. Cargo box top plate; 12. Cargo box front plate; 13. Cargo box side plate;

[0039] 2. Front of the vehicle; 21. Front roof;

[0040] 3. guide device; 31 lifting part; 32. middle drainage part; 33. lateral drainage part;

[0041] 4. Air flow separation point;

[0042] 5. Air flow separation area;

[0043] 6. Turbulent air flow area;

[0044] 7. Airflow reattachment point. DETAILED DESCRIPTION

[0045] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0046] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0047] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0050] like Figures 1 to 7 As shown, the present invention relates to a vehicle structure for optimizing airflow guidance. The vehicle comprises: a cargo box 1, the cargo box 1 comprises a cargo box front panel 12 and a cargo box roof panel 11; a vehicle front 2, the vehicle front 2 comprises a vehicle front roof 21. In order to effectively manage the airflow, a guide device 3 is provided in the vehicle. The guide device 3 is installed on the cargo box 1, and its height is at least partially higher than the cargo box roof panel 11. The purpose of such a design is that when the airflow flows from the front of the vehicle to the rear during the driving process of the vehicle, the separation point 4 of the guided airflow is lifted and moved backward relative to the transition area between the cargo box front panel 12 and the cargo box roof panel 11 through the guide device 3, thereby optimizing the airflow path and reducing the generation of turbulence.

[0051] In conventional vehicle designs, the airflow separation point 4 is usually located near the transition area between the cargo box roof 11 and the cargo box front panel 12. Since the airflow direction changes suddenly in this transition area, turbulence is formed. This turbulence not only increases the air resistance of the vehicle, resulting in reduced fuel efficiency, but also generates additional stress on the cargo box structure, causing vibration and noise problems on the cargo box roof and front panel during vehicle driving. By providing a guide device 3 in the vehicle, the airflow separation point 4 can be effectively lifted and moved backward, reducing the impact of turbulence and significantly improving the aerodynamic performance of the vehicle.

[0052] In addition, this design can significantly reduce air resistance caused by turbulence, thereby improving the fuel economy of the vehicle. More importantly, by reducing the stress on the cargo box roof and front panel, the guide device 3 effectively extends the service life of these key structural components and reduces the maintenance cost of the vehicle.

[0053] The lifting portion 31 of the guide device 3 is a key part in its structure. Figures 2 to 4As shown, the lifting portion 31 extends upward and is located above the cargo box roof 11. Its main function is to guide the airflow to flow upward, and when the airflow reaches the highest point of the lifting portion 31, due to inertia, the airflow continues to flow upward to the airflow separation point 4. In this process, the airflow separates on the horizontal plane to form an airflow separation area 5.

[0054] When the vehicle is traveling at high speed, a turbulent zone 6 may be generated between the airflow separation zone 5 and the cargo box roof 11. The formation of the airflow turbulent zone 6 is usually accompanied by irregular pulsating pressure. When this pressure is transmitted to the cargo box roof 11, it will cause deformation and vibration of the cargo box roof, resulting in increased noise. In order to address this problem, the lifting portion 31 of the present invention is designed to be a structure higher than the cargo box roof 11, so that the height of the airflow separation point 4, the airflow separation zone 5 and the turbulent zone 6 are raised. By lifting these key areas, the pulsating pressure generated in the turbulent zone is effectively reduced when it is transmitted to the cargo box roof 11, thereby reducing the vibration amplitude of the cargo box roof and significantly reducing the noise level during vehicle operation.

[0055] Furthermore, after the airflow separates, the airflow will gradually move downward under the influence of gravity, and finally form an airflow reattachment point 7 on the cargo box roof 11. In order to further optimize the influence of the airflow, the present invention makes precise adjustments to the design of the lifting portion 31. By adjusting the height of the lifting portion 31 relative to the cargo box roof 11 and the ratio between the length of the cargo box roof 11, the airflow reattachment point 7 can be moved back to the rear edge of the cargo box roof 11, and even in some cases, the airflow reattachment point 7 can be moved to the outside of the cargo box roof 11.

[0056] In one embodiment of the present application, the ratio range of the lifting portion 31 to the length of the cargo box 1 is set to 1:800 to 1:1500. By selecting the ratio value within this larger range, the position of the airflow reattachment point 7 can be precisely controlled to move toward the rear edge or outer side of the cargo box roof 11. This adjustment effectively improves the flow path of the airflow, thereby optimizing the aerodynamic performance of the vehicle. In practical applications, this ratio range provides designers with sufficient flexibility to cope with different vehicle sizes and operating conditions, ensuring that the position of the airflow reattachment point 7 can maximize the aerodynamic efficiency of the cargo box roof 11.

[0057] In a preferred embodiment of the present application, the ratio of the lifting portion 31 to the length of the cargo box 1 is in the range of 1:1000 to 1:1200. The ratio setting within this smaller range can not only more accurately control the airflow reattachment point 7 at the rear edge or outer side of the cargo box roof 11, but also significantly reduce the aerodynamic resistance on the top of the cargo box. Especially in the case of high-speed driving, this proportional design can significantly reduce the vehicle's drag coefficient and improve fuel efficiency. In addition, this precise airflow control can also effectively solve the problem of pulsating pressure on the cargo box roof 11, and improve the stability and safety of vehicle driving. In short, the small range of proportional settings achieves the best balance between aerodynamic optimization and actual operation, providing the vehicle with better performance.

[0058] The rearward design of the airflow reattachment point 7 can significantly reduce the pressure and vibration of the airflow on the cargo box top plate 11, further reducing the noise. Furthermore, in a high temperature environment or after a long period of driving, the optimized design of the airflow reattachment point 7 can reduce the fatigue effect of thermal stress on the cargo box top plate 11 material, extend the service life of the cargo box top plate 11 and the cargo box front plate 12, and avoid premature aging and failure of the materials.

[0059] The guide device 3 includes not only a lifting portion 31, but also a middle drainage portion 32 and a lateral drainage portion 33. Figures 2 to 4 The middle drainage portion 32 is located in front of the cargo box front plate 12 and protrudes forward relative to the side drainage portions 33. The side drainage portions 33 extend toward the cargo box side plates 13, so that part of the airflow overflows to both sides of the cargo box 1 through the side drainage portions 33, thereby reducing the amount of airflow directly entering the cargo box top plate 11 and significantly reducing the intensity of the airflow turbulence zone 6.

[0060] This design not only performs well in reducing the scope and intensity of the turbulent zone, but also effectively reduces the impact of the airflow on the cargo box front plate 12, and further reduces the possibility of turbulence caused by sudden changes in the airflow. By making the airflow flow more smoothly, the aerodynamic efficiency of the entire vehicle is improved. In other embodiments, the middle drainage portion 32 may not protrude from the side drainage portion 33, and it only needs to achieve drainage and raise and move the separation point 4 backward, which will not be repeated.

[0061] In another preferred embodiment of the present invention, the side guide portion 33 of the guide device 3 is designed to extend in an arc shape from the middle to both sides. This design further enhances the aerodynamic performance of the vehicle by optimizing the path and distribution of the airflow, especially performing well under high-speed driving and complex airflow conditions.

[0062] The design of the side guide portion 33 extending in an arc shape from the middle to both sides allows the airflow to transition more smoothly to both sides of the cargo box 1 when passing through the cargo box front plate 12. The arc-shaped extension structure reduces the sudden change in the direction of the airflow and reduces the probability of turbulence. This design can not only guide the airflow distribution more effectively, but also balance the airflow pressure on both sides of the cargo box 1, thereby improving the overall aerodynamic performance.

[0063] Through the arc design of the side guide portion 33, the airflow can flow more smoothly on the vehicle surface, reducing the air resistance caused by the sudden turning of the airflow. With the smooth transition of the airflow, the air resistance of the vehicle during driving is reduced, thereby improving the fuel efficiency of the vehicle, especially under high-speed driving conditions.

[0064] The arc-shaped side guide 33 can effectively guide and disperse the crosswind pressure from the side, making the vehicle more stable when encountering crosswind. By guiding the airflow to the outer area of ​​the cargo box 1 and reducing the gathering of airflow on the vehicle surface, this design can reduce the lateral impact of the crosswind on the vehicle, reduce the lateral swing of the vehicle body, and improve the driving stability and safety of the vehicle.

[0065] In addition, the side guide portion 33 extends to the outer edge of the cargo box side panel 13, so that it borders the outer edge of the cargo box front panel 12. This design forms a smoother airflow channel, allowing the airflow to completely overflow to the outside of the cargo box 1, thereby reducing the retention of airflow on the cargo box top panel 11 and improving the aerodynamic performance of the vehicle.

[0066] In another preferred embodiment of the present invention, the side guide portion 33 of the guide device 3 is designed to extend to the edge close to the cargo box front panel 12, but not bordering it. This design further optimizes the airflow path, while retaining the control of the airflow when entering the transition area between the cargo box front panel and the side panel, thereby reducing the generation of turbulence and the concentration of airflow pressure.

[0067] The side guides 33 extend close to but not bordering the edge of the cargo box front panel 12, retaining the natural transition of part of the airflow in this area. This design flexibility allows the airflow to be more freely distributed in the transition area between the cargo box front panel 12 and the side panels 13 without being subjected to excessive guiding pressure, thus avoiding excessive gathering of the airflow in this area. This helps to further reduce the formation of turbulence, making the airflow flow more smoothly and naturally on the vehicle surface, further optimizing the aerodynamic performance of the vehicle.

[0068] By retaining a certain airflow buffer zone near the edge of the cargo box front panel 12, the airflow can be more evenly distributed in the front area of ​​the cargo box under the guidance of the side guide 33. In this way, the airflow pressure is no longer concentrated at a specific position of the cargo box front panel 12, but is effectively dispersed, reducing the phenomenon of excessive local pressure. This optimized airflow pressure distribution not only improves the overall aerodynamic performance of the vehicle, but also further reduces the vibration and noise of the cargo box during driving.

[0069] In another preferred embodiment of the present invention, the side guide portion 33 of the guide device 3 is designed to extend to the outside of the edge of the cargo box front plate 12. This design achieves a more significant airflow control effect by further guiding the airflow to the outer area of ​​the cargo box, thereby further optimizing the aerodynamic performance of the vehicle. The design of the side guide portion 33 extending to the outer side of the edge of the cargo box front plate 12 can more effectively disperse the airflow to the outer area of ​​the vehicle. By guiding the airflow to the outer area of ​​the cargo box front plate 12, the accumulation of airflow on the surface and edge of the cargo box 1 is avoided, thereby significantly reducing air resistance. This design is particularly helpful in reducing the drag of the airflow on the vehicle under high-speed driving conditions, thereby improving fuel efficiency and driving stability.

[0070] Since the airflow is directed to the outer area of ​​the cargo box front panel 12, the direct impact of the airflow on the cargo box front panel 12 is effectively dispersed, reducing the aerodynamic stress on the cargo box front panel 12. This design not only reduces fatigue and wear of the cargo box front panel 12, but also extends the service life of the cargo box and reduces structural damage caused by airflow impact. In addition, this design can better protect the surface coating of the cargo box front panel 12 and avoid surface damage caused by airflow impact during long-term high-speed driving.

[0071] The present invention preferably designs the central drainage portion 32, the side drainage portion 33 and the lifting portion 31 as an integrated structure. This integrated design not only simplifies the manufacturing process and improves the overall structural strength of the guide device 3, but also reduces the possibility of turbulence by reducing the connection points of the components. In addition, by adopting high-precision mold technology, accurate control of every detail in the integrated molding process is ensured, so that the performance of the guide device in actual use is more stable and the airflow guiding effect is more significant.

[0072] like Figure 3 As shown, the guide device 3 of the present invention presents a curve with a curvature radius that increases from small to large from top to bottom. The curve has a larger curvature at the lifting portion 31, which helps the airflow to separate here and effectively prevents the airflow from attaching to the top plate 11 of the cargo box too early.

[0073] As the curve extends downward to the middle guide portion 32 and the side guide portion 33, the curvature of the curve gradually decreases. This design ensures that the airflow can gradually stabilize when passing through the guide device, reducing the generation of turbulence. This curve design not only optimizes the airflow guiding path, but also effectively reduces air resistance and improves the fuel efficiency of the vehicle.

[0074] In other embodiments, if the vehicle design requires, different transition designs may be used, such as directly using a ramp transition. Regardless of the design, the present invention can optimize the aerodynamic performance of the vehicle through reasonable airflow management, and improve driving stability and safety.

[0075] The installation design of the guide device 3 is also an important part of the present invention. In order to ensure the stability of the guide device 3, the present invention ensures that it can be accurately clamped on the cargo box front plate 12 and the cargo box top plate 11. The two planes where the guide device 3 is clamped with the cargo box front plate 12 and the cargo box top plate 11 are perpendicular to each other, and the two clamped planes are respectively tightly attached to the cargo box front plate 12 and the cargo box top plate 11. High-strength bolts are used during the installation process to ensure that the guide device 3 can withstand the air impact force during high-speed driving.

[0076] During the design process, considering the vibration and dynamic load of the vehicle under different road conditions, the guide device 3 intentionally reserves a gap area near the rear side of the front 2 to prevent collision damage caused by the vibration of the front. In addition, the guide device 3 is set with three fixing points on the front plate 12 of the cargo box, which are located on the left and right sides and the middle position, respectively, to ensure its stability under various working conditions.

[0077] This installation structure not only improves the service life of the guide device 3, but also ensures its reliability after long-term use, and provides a strong guarantee for the safety of the vehicle during high-speed driving.

[0078] Optionally, according to different vehicle models and actual needs, the guide device 3 can be installed on the front of the vehicle 2, and a similar airflow guiding effect can be achieved by ensuring that it is at least partially higher than the cargo box top plate 11. The flexibility of this design makes it adaptable to the needs of different vehicle models, whether it is a freight vehicle or other types of commercial vehicles.

[0079] In other embodiments of the present application, the guide device 3 is not only provided on the cargo box 1, but also on the front of the vehicle 2. Such a design enables the airflow to be more effectively guided when passing through the transition area between the front of the vehicle 2 and the cargo box 1, thereby further optimizing the aerodynamic performance of the entire vehicle.

[0080] By providing the guide device 3 on both the front of the vehicle 2 and the cargo box 1, the airflow can be guided in advance when passing through the front roof 21, so that the airflow separation point 4 starts to be optimized at the front of the vehicle. This advance guiding effect avoids the sudden change of the airflow between the front roof 21 and the front plate 12 of the cargo box, and reduces the turbulence formed in the transition area. The guide device 3 on the front of the vehicle can guide the airflow to flow smoothly through the front of the vehicle and smoothly transition to the guide device 3 above the cargo box 1, thereby achieving a smooth transition of the airflow path above the entire vehicle. Such a continuous design helps to reduce air resistance and improve fuel efficiency, especially when driving at high speeds.

[0081] By arranging guide devices on both the front of the vehicle 2 and the cargo box 1, the accumulation of airflow on the top of the front of the vehicle 2 and the front of the cargo box 1 can be effectively reduced, and the impact of airflow can be reduced. This parallel arrangement can make the airflow more smoothly distributed along the entire length of the vehicle, avoiding the formation of high-pressure areas in the front of the cargo box 1 or in the transition area, thereby reducing the double impact of airflow on the front of the vehicle 2 and the cargo box 1. This design significantly improves the aerodynamic performance of the entire vehicle, allowing the vehicle to maintain stable aerodynamic characteristics under various driving conditions.

[0082] Since the guide device 3 exists on both the front of the vehicle 2 and the cargo box 1, the airflow is guided to flow smoothly on the vehicle surface, which can effectively reduce the noise caused by airflow disturbance and turbulence. In addition, the airflow transition between the front of the vehicle 2 and the cargo box 1 is smoother, reducing the rapid change of airflow in the transition area, thereby reducing the generation of aerodynamic noise. This has a positive effect on improving the quietness inside and outside the vehicle and improving the riding comfort of passengers.

[0083] In a preferred embodiment of the present application, the height of the cargo box 1 is H, and the height difference between the lowest position of the guide device 3 extending downward along the cargo box front plate 12 and the cargo box top plate 11 is h. In order to reduce the impact of airflow on the cargo box front plate 12 and optimize the aerodynamic performance of the vehicle, the height difference should be ensured to meet the design.

[0084]

[0085] In some specific application scenarios, the height difference h is further optimized to meet The range of the guide device can significantly enhance the protective effect of the guide device on the cargo box front plate 12.

[0086] When h is When the distance between the guide device 3 and the cargo box top plate 11 is within the range of , the distance between the guide device 3 and the cargo box top plate 11 is sufficient to form an effective airflow guiding channel. This design can create a smooth airflow channel between the cargo box front plate 12 and the guide device, avoiding the sudden turning or convergence of the airflow in this area, thereby greatly reducing the direct impact of the airflow on the cargo box front plate 12. This optimization helps to reduce fatigue and deformation of the front plate and extend its service life, especially under high-speed driving conditions. This effect is particularly obvious.

[0087] By controlling the height difference of h within a smaller range, the airflow can smoothly transition between the guide device 3 and the cargo box front plate 12, thereby reducing the generation of turbulence and aerodynamic noise. By avoiding the concentrated impact of the airflow on the cargo box front plate 12, not only the structural stability of the front plate can be improved, but also the aerodynamic noise can be reduced, thereby improving driving comfort.

[0088] For different endpoint values ​​of the height difference h, the influence of the guide device 3 on the cargo box front plate 12 is also different:

[0089] When h is close to When the guide device 3 is at the lowest point, the distance between the lowest point of the guide device 3 and the top plate 11 of the cargo box is the smallest, so that the range of airflow on the guide device 3 along the side guide portion 33 to the two sides of the cargo box 1 is reduced. This design guides the airflow in a centralized manner, further making it fit more closely to the front plate 12 of the cargo box.

[0090] When h is close to When the guide device 3 is installed, the distance between the lowest point and the top plate 11 of the cargo box is large, so that the airflow on the guide device 3 along the side guide portion 33 to the two sides of the cargo box 1 is expanded. In this way, the airflow can further flow from the guide device to the front plate 12 of the cargo box more smoothly and gradually diffuse, thereby reducing the concentrated impact force of the airflow on the front plate 12. This design is particularly suitable for vehicles traveling at high speeds or under strong wind conditions, which helps to reduce material fatigue and deformation of the front plate 12 and extend the service life of the front plate.

[0091] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0092] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0093] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A vehicle comprising: A cargo box, the cargo box comprising a cargo box front plate and a cargo box top plate; A front part of the vehicle, the front part of the vehicle comprising a front roof; Characterized in that the vehicle further comprises a guide device for guiding the airflow; The guide device is installed on the cargo box; and / or, the guide device is installed on the front of the vehicle; The guide device is at least partially higher than the cargo box top plate, so that when the airflow flows from front to back through the guide device during vehicle driving, the airflow separation point is lifted and moved backward relative to the transition area between the cargo box front plate and the cargo box top plate.

2. A vehicle according to claim 1, characterized in that: The guide device includes a lifting portion extending toward the cargo box top plate and located above the cargo box top plate, the highest point of the guide device is located at the lifting portion, and the airflow separation point is located above the lifting portion, so that the airflow generates an airflow separation zone that is at least partially located behind the lifting portion after passing through the airflow separation point, and a highly elevated airflow turbulence zone is formed between the airflow separation zone and the cargo box top plate.

3. A vehicle according to claim 2, characterized in that: After the airflow descends, an airflow reattachment point may be formed, and the ratio of the height of the lifting portion to the length of the cargo box top plate is set to 1:800 to 1:1500, so that the airflow reattachment point is close to the rear edge of the cargo box top plate or is located on the outside of the cargo box top plate.

4. A vehicle according to claim 1, characterized in that: The guide device further includes a middle drainage portion and side drainage portions extending from the middle drainage portion to two opposite sides of the middle drainage portion, and the cargo box further includes cargo box side panels located at two opposite sides of the cargo box; The central drainage portion and the side drainage portions are both located in front of the cargo box front plate, and the central drainage portion is arranged to protrude forward relative to the side drainage portions, and the side drainage portions extend toward the cargo box side plates so that part of the airflow can overflow to both sides of the cargo box after passing through the side drainage portions.

5. A vehicle according to claim 4, characterized in that: The guide device also includes a lifting portion connected to the central drainage portion and the side drainage portion respectively, at least a portion of the lifting portion is located above the cargo box top plate, and the lifting portion has a guide portion extending toward the cargo box side plate, and part of the airflow flows along the guide portion after passing through the airflow separation point and flows out to the outside of the cargo box top plate.

6. A vehicle according to claim 5, characterized in that: The central drainage portion, the lateral drainage portion and the lifting portion are an integrally formed structure.

7. A vehicle according to claim 4, characterized in that: The side drainage portion extends toward the cargo box side plate until the outer edge of the side drainage portion borders the outer edge of the cargo box front plate.

8. A vehicle according to claim 1, characterized in that: The guide device is arranged on the cargo compartment, and at least a partial gap is maintained between the guide device and the rear side of the vehicle front.

9. A vehicle according to claim 1, characterized in that: The guide device is arranged on the front roof of the vehicle, and a partial area of ​​the guide device extends above the top plate of the cargo box.

10. A vehicle according to claim 1, characterized in that: The height of the cargo box is H, and the height difference between the lowest position of the guide device and the top plate of the cargo box is h, and the height difference h satisfies:

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