Flow guide assembly for vehicle and vehicle

Abstract

The flow guide assembly for the vehicle comprises a bottom protection plate, a front bumper and a rear bumper, the front bumper is provided with a front lip, the front lip is arranged on the front side of the bottom protection plate, the lower wall face of the front lip gradually and obliquely extends downwards in the direction from front to back, and the lower wall face of the rear lip is arranged on the lower side of the bottom protection plate. The rear bumper is provided with a rear diffuser, the rear diffuser is arranged on the rear side of the bottom protection plate, and the lower wall face of the rear diffuser gradually extends upwards in an inclined mode from front to back. According to the flow guide assembly for the vehicle, wind resistance can be reduced, and the aerodynamic performance of the whole vehicle can be improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a flow guide component for a vehicle and a vehicle. Background Technology

[0002] The drag coefficient of a vehicle is one of the important indicators for measuring vehicle energy efficiency and driving performance, and the aerodynamic optimization of the vehicle's underbody is a key factor in improving vehicle energy efficiency and driving performance. In related technologies, unreasonable structural design of the vehicle's underbody leads to a large drag coefficient and high energy consumption. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a vehicle aerodynamic component that can reduce wind resistance and improve the overall aerodynamic performance of the vehicle.

[0005] An embodiment of this utility model also proposes a vehicle.

[0006] The airflow guiding component for a vehicle according to an embodiment of the present invention includes: a bottom guard plate; a front bumper having a front lip disposed on the front side of the bottom guard plate, the lower wall surface of the front lip gradually extending downward in a direction from front to rear; and a rear bumper having a rear diffuser disposed on the rear side of the bottom guard plate, the lower wall surface of the rear diffuser gradually extending upward in a direction from front to rear.

[0007] According to an embodiment of the present invention, the airflow guiding component for vehicles features a front lip whose lower wall gradually slopes downwards from front to rear. When the vehicle is in motion, the front lip acts as a windbreak, guiding airflow towards the rear of the vehicle and ensuring it flows close to the underbody, reducing airflow turbulence under the vehicle. Conversely, the lower wall of the rear diffuser gradually slopes upwards from front to rear, delaying the separation of airflow from the underside of the vehicle with the lower wall of the rear diffuser, resulting in more stable airflow at the rear of the vehicle. Therefore, the front lip and rear diffuser of the airflow guiding component in this embodiment of the present invention work together to streamline the airflow, reducing drag during vehicle operation, improving overall aerodynamic performance, reducing wind noise, and minimizing energy consumption.

[0008] In some embodiments, in a projection plane orthogonal to the left and right directions of the front lip, the outline of the lower wall of the front lip is a first arc, and the center of curvature of the first arc is located on the upper side of the first arc.

[0009] In some embodiments, the radius of curvature of the first arc is R1, wherein 500mm≤R1≤1000mm; and / or, the length of the first arc is L1, wherein 100mm≤L1≤120mm.

[0010] In some embodiments, in a projection plane orthogonal to the left and right directions of the rear diffuser, the outline of the lower wall of the rear diffuser is a second arc, and the center of curvature of the second arc is located on the upper side of the second arc.

[0011] In some embodiments, the radius of curvature of the second arc is R2, wherein 1000mm≤R2≤1500mm; and / or, the length of the second arc is L2, wherein 150mm≤L2≤200mm.

[0012] In some embodiments, the angle between the lower wall of the front lip and the plane where the bottom guard plate is located is α, and the angle between the lower wall of the rear diffuser and the plane where the bottom guard plate is located is β, wherein 10°≤α≤25° and 10°≤β≤25°.

[0013] In some embodiments, the bottom guard includes a front bottom guard connected to the front lip, and the lower wall surface of the front bottom guard includes a smooth surface, at least a portion of which is located on the front side of the front bottom guard.

[0014] In some embodiments, the bottom guard includes a rear bottom guard connected to the rear diffuser, the lower wall of the rear bottom guard having a downwardly opening recess.

[0015] In some embodiments, there are multiple recesses, which are spaced apart along the front-rear direction and the left-right direction of the rear outsole, with at least some of the recesses located on the rear side of the rear outsole.

[0016] In some embodiments, the diameter of the opening of the recess is φ, wherein 27mm≤φ≤35mm; and / or, the radius of curvature of the inner wall of the recess is R3, wherein 55mm≤R3≤65mm; and / or, the depth of the recess is M, wherein 3mm≤M≤7mm.

[0017] In some embodiments, the aerodynamic assembly for a vehicle further includes a wheel cover, the wheel cover including a wheel cover body and a rounded chamfer, the wheel cover body being connected to the underbody protection plate via the rounded chamfer.

[0018] In some embodiments, the wheel cover further includes a flange portion, which is disposed on the inner side of the front end of the rounded chamfer portion, and the flange portion extends in a direction away from the outer wall surface of the rounded chamfer portion.

[0019] In some embodiments, the maximum extension length of the flange is L3, wherein 30mm≤L3≤50mm; and / or, the chamfer radius of the outer wall of the rounded chamfer is R4, wherein 40mm≤R4≤60mm.

[0020] In some embodiments, the system further includes a front wheel deflector and a front wheel cover, the front wheel cover being connected to the underbody protection plate, and the front wheel deflector being mounted on the front side of the front wheel cover; and / or, the airflow deflector assembly for the vehicle further includes a rear wheel deflector and a rear wheel cover, the rear wheel cover being connected to the underbody protection plate, and the rear wheel deflector being mounted on the front side of the rear wheel cover.

[0021] Another embodiment of the present invention includes a vehicle body and a flow guide assembly, wherein the flow guide assembly is the flow guide assembly for a vehicle as described in any one of the embodiments of the present invention, the front bumper is disposed on the front side of the vehicle body, the rear bumper is disposed on the rear side of the vehicle body, and the underbody protection plate is disposed on the lower side of the vehicle body.

[0022] According to an embodiment of the present invention, the lower wall of the front lip gradually slopes downwards from front to rear. When the vehicle is in motion, the front lip acts as a windbreak, and its lower wall guides airflow towards the rear of the vehicle body, ensuring it flows close to the underbody protection, thus reducing airflow turbulence under the vehicle. Similarly, the lower wall of the rear diffuser gradually slopes upwards from front to rear, delaying the separation of airflow from the underside of the vehicle body with the lower wall of the rear diffuser, resulting in more stable airflow at the rear of the vehicle. Therefore, in this embodiment of the present invention, the front lip and rear diffuser work together to streamline airflow, reducing drag during vehicle operation, improving overall aerodynamic performance, reducing wind noise, and minimizing energy consumption. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the bottom of the vehicle according to an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the front lip of the flow guiding component according to an embodiment of the present invention.

[0025] Figure 3 This is a simulation diagram of the airflow of the front lip of the airflow guide component according to an embodiment of this utility model.

[0026] Figure 4 This is a schematic diagram of the rear diffuser of the flow guiding component according to an embodiment of the present invention.

[0027] Figure 5 This is a partial view of the rear diffuser of the flow guiding component according to an embodiment of the present invention.

[0028] Figure 6This is a simulated airflow diagram of the rear diffuser of the airflow guiding component according to an embodiment of the present invention.

[0029] Figure 7 This is a partial installation diagram of the front wheel cover and bottom guard plate of the air guide assembly according to an embodiment of the present utility model.

[0030] Figure 8 This is a simulation diagram of the airflow at the front wheel arch position of the air guide assembly according to an embodiment of this utility model.

[0031] Figure label:

[0032] 1. Front bumper; 11. Front lip; 111. First arc;

[0033] 2. Rear bumper; 21. Rear diffuser; 211. Second arc; 22. Air deflector;

[0034] 3. Bottom protection plate; 31. Front bottom protection plate; 311. Smooth surface; 32. Rear bottom protection plate; 321. Dent; 33. Battery protection plate;

[0035] 4. Wheel cover; 41. Front wheel cover; 411. Wheel cover body; 412. Rounded chamfer; 413. Flanged edge; 414. Reinforcing rib; 42. Rear wheel cover;

[0036] 5. Front wheel chocks;

[0037] 6. Rear wheel chock plate. Detailed Implementation

[0038] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] The following is a reference appendix. Figures 1 to 8 This invention describes a flow guide assembly for a vehicle and a vehicle according to embodiments of the present invention.

[0040] like Figures 1 to 5 As shown, the airflow guiding component for a vehicle according to an embodiment of the present invention includes: a bottom guard plate 3, a front bumper 1, and a rear bumper 2. The front bumper 1 has a front lip 11, which is located on the front side of the bottom guard plate 3. The lower wall surface of the front lip 11 gradually slopes downward in a direction from front to rear. The rear bumper 2 has a rear diffuser 21, which is located on the rear side of the bottom guard plate 3. The lower wall surface of the rear diffuser 21 gradually slopes upward in a direction from front to rear.

[0041] According to an embodiment of the present invention, the airflow guiding component for a vehicle has a front lip 11 whose lower wall surface gradually slopes downwards from front to rear. When the vehicle is in motion, the front lip 11 can act as a windbreak, and its lower wall surface can guide airflow towards the rear of the vehicle body, flowing closely to the underbody protection plate 3, reducing airflow turbulence under the vehicle. Since the lower wall surface of the rear diffuser 21 gradually slopes upwards from front to rear, the airflow under the vehicle body can be delayed in separating from the lower wall surface of the rear diffuser 21, resulting in more stable airflow at the rear of the vehicle.

[0042] Therefore, in the embodiments of this utility model, the front lip 11 and the rear diffuser 21 of the airflow guide assembly for vehicles complement each other and work together to streamline the airflow, which helps to reduce the resistance during vehicle operation, improve the aerodynamic performance of the whole vehicle, reduce wind noise, and consume less energy.

[0043] It is understandable that the up, down, left, right, front, and back directions of the front lip 11 and the up, down, left, right, front, and back directions of the rear diffuser 21 are consistent with the up, down, left, right, front, and back directions of the vehicle.

[0044] like Figure 2 and Figure 3 As shown, the front lip 11 extends roughly along the left and right direction of the vehicle body, and the length of the front lip 11 along the left and right direction is roughly equal to the length of the vehicle body along the left and right direction, which can improve the wind-breaking effect of the front lip 11.

[0045] Optionally, such as Figure 2 As shown, in the projection plane orthogonal to the left and right directions of the front lip 11, the outline of the lower wall of the front lip 11 is the first arc 111, and the center of curvature of the first arc 111 is located on the upper side of the first arc 111. It can be understood that the first arc 111 protrudes slightly downward, thereby guiding the airflow to flow backward along the bottom guard plate 3, reducing the problem of airflow turbulence under the vehicle, and thus reducing the drag coefficient of the entire vehicle.

[0046] The radius of curvature of the first arc 111 is R1, where 500mm ≤ R1 ≤ 1000mm. For example, the radius of curvature R1 of the first arc 111 can be 500mm, 600mm, 700mm, 800mm, 900mm, or 1000mm. The inventors of this invention discovered through experimental research that when the radius of curvature R1 of the first arc 111 meets the above range, the airflow can better conform to the front underbody protection plate 31, resulting in lower driving resistance, thereby further optimizing the aerodynamic performance of the entire vehicle and reducing energy consumption.

[0047] Optionally, such as Figure 2As shown, the length of the first arc 111 is L1, where 100mm ≤ L1 ≤ 120mm. It can be understood that the extension length of the lower wall of the front lip 11 along the front-rear direction is L1. When L1 is selected within the range of 100mm-120mm, the airflow can better conform to the front underbody protection plate 31, resulting in lower driving resistance. Furthermore, it can reduce resonance noise caused by the excessive length of the lower wall of the front lip 11, thus achieving a better noise reduction effect.

[0048] For example, L1 can be 100mm, 102mm, 104mm, 106mm, 108mm, 110mm, 112mm, 114mm, 116mm, 118mm, or 120mm.

[0049] like Figure 2 As shown, the angle between the upper and lower walls of the front lip 11 is acute, and the upper and lower walls of the front lip 11 are connected by a rounded transition. Because the angle between the upper and lower walls of the front lip 11 is acute, the wind-breaking effect of the front lip 11 is improved. The rounded transition between the upper and lower walls of the front lip 11 ensures sufficient structural strength at the front end, reduces the probability of damage due to impacts, and facilitates manufacturing.

[0050] Optionally, such as Figure 4 and Figure 5 As shown, in the projection plane orthogonal to the left and right directions of the rear diffuser 21, the outline of the lower wall of the rear diffuser 21 is the second arc 211, and the center of curvature of the second arc 211 is located on the upper side of the second arc 211. It can be understood that the second arc 211 protrudes slightly downward, which can guide the airflow under the vehicle body to separate from the lower wall of the rear diffuser 21 with a delay, thereby reducing the drag coefficient of the entire vehicle and reducing the low-frequency noise caused by airflow separation at the bottom of the vehicle.

[0051] like Figure 5 As shown, the radius of curvature of the second arc 211 is R2, where 1000mm ≤ R2 ≤ 1500mm. For example, the radius of curvature R2 of the second arc 211 can be 1000mm, 1100mm, 1200mm, 1300mm, 1400mm, or 1500mm. The inventors of this invention have discovered through experimental research that when the radius of curvature R2 of the second arc 211 meets the above range, it can make the airflow at the rear of the vehicle more stable, reduce air resistance, improve the aerodynamic performance of the vehicle, and increase the downforce at the rear of the vehicle, resulting in better stability during vehicle operation.

[0052] Optionally, such as Figure 4As shown, the length of the second arc 211 is L2, where 150mm ≤ L2 ≤ 200mm. It can be understood that the extension length of the lower wall of the rear diffuser 21 along the front-rear direction is L2. When L2 is selected within the range of 150mm-200mm, the inventors of this invention have found through experimental research that when the length L2 of the second arc 211 meets the above range, the airflow at the rear of the vehicle can be more stable, reducing air resistance and improving the vehicle's aerodynamic performance. Furthermore, it can reduce resonance noise caused by the excessive length of the lower wall of the rear diffuser 21, resulting in a better noise reduction effect.

[0053] For example, L2 can be 150mm, 160mm, 170mm, 180mm, 190mm, or 200mm.

[0054] Optionally, such as Figure 4 As shown, the lower wall of the rear diffuser 21 is provided with multiple guide vanes 22, which are spaced apart along the left-right direction of the rear diffuser 21. The upper end face of the guide vanes 22 is in contact with the lower wall of the rear diffuser 21, and the guide vanes 22 gradually extend rearward. In a projection plane orthogonal to the left-right direction of the vehicle, the guide vanes 22 generally have a triangular outline. The airflow guiding component for vehicles in this embodiment of the present invention, by setting the guide vanes 22, can further streamline the airflow behind the vehicle, reduce turbulence at the rear of the vehicle, and reduce driving resistance.

[0055] In some embodiments, such as Figure 2 As shown, the angle between the lower wall surface of the front lip 11 and the plane containing the bottom protective plate 3 is α, where 10° ≤ α ≤ 25°. For example, α can be 10°, 12°, 14°, 16°, 17°, 18°, 20°, 22°, or 25°. It can be understood that, since the lower wall surface of the front lip 11 has a certain curvature, the angle α between the lower wall surface of the front lip 11 and the plane containing the bottom protective plate 3 gradually decreases from front to back.

[0056] The vehicle guide assembly of this utility model, by adopting the above-mentioned inclined angle on the lower wall surface of the front lip 11, can further reduce the problem of turbulence under the vehicle and reduce driving resistance. On the other hand, since the lower wall surface of the front lip 11 has a certain inclination angle, it can improve the vehicle's passability and reduce the probability of the front end (front lip 11) of the vehicle hitting the ground when the vehicle is going uphill or downhill.

[0057] like Figure 5As shown, the angle between the lower wall of the rear diffuser 21 and the plane containing the bottom protective plate 3 is β, where 10° ≤ β ≤ 25°. For example, β can be 10°, 12°, 14°, 16°, 17°, 18°, 20°, 22°, or 25°. It can be understood that, because the lower wall of the rear diffuser 21 has a certain curvature, the angle β between the lower wall of the front lip 11 and the plane containing the bottom protective plate 3 gradually increases from front to back.

[0058] The airflow guiding component for vehicles in this embodiment of the present invention adopts the aforementioned inclined angle on the lower wall surface of the rear diffuser 21. On the one hand, it can further reduce the problem of turbulence under the vehicle and reduce driving resistance. On the other hand, since the lower wall surface of the rear diffuser 21 has a certain inclination angle, it can improve the vehicle's passability and reduce the probability of the front end (front lip 11) and the rear end (rear diffuser 21) of the vehicle hitting the ground when the vehicle goes uphill or downhill.

[0059] In some embodiments, such as Figure 1 As shown, the underbody protection plate 3 includes a front underbody protection plate 31, which is connected to the front lip 11. The lower wall surface of the front underbody protection plate 31 includes a smooth surface 311, which is located on the front side of the front underbody protection plate 31. The smooth surface 311 can be understood as a flat and smooth surface. The front underbody protection plate 31 is located near the front wheels of the vehicle. The connection between the lower wall surface of the front lip 11 and the front underbody protection plate 31 avoids airflow turbulence at the connection point, improving the fit between the airflow and the front underbody protection plate 31. Furthermore, since the smooth surface 311 of the front underbody protection plate 31 is located on the front side, it further improves the fit between the airflow and the front underbody protection plate 31, reducing turbulence at the bottom of the front underbody protection plate 31 and decreasing driving resistance.

[0060] Optionally, such as Figure 1 As shown, the underbody protection plate 3 includes a rear underbody protection plate 32, which is connected to the rear diffuser 21. The lower wall surface of the rear underbody protection plate 32 has a downward-opening recess 321. It is understood that the rear underbody protection plate 32 is located near the rear wheels of the vehicle, and the lower wall surface of the rear underbody protection plate 32 connects with the lower wall surface of the rear diffuser 21, which can prevent airflow turbulence at the connection point between the rear underbody protection plate 32 and the rear diffuser 21. Furthermore, because the lower wall surface of the rear underbody protection plate 32 has a downward-opening recess 321, the boundary layer of the airflow flowing through the rear underbody protection plate 32 can partially separate and then re-attach, thereby delaying airflow separation on the surface of the rear underbody protection plate 32, ensuring that the airflow continuously adheres to the underside of the vehicle, reducing turbulence below the rear underbody protection plate 32, and reducing driving resistance.

[0061] For example, such as Figure 1As shown, there are multiple recesses 321, which are spaced apart along the front-to-back direction and the left-to-right direction of the rear bottom guard plate 32. At least some of the recesses 321 are located on the rear side of the rear bottom guard plate 32. This can further improve the fit between the airflow and the rear bottom guard plate 32 and reduce the problem of turbulence occurring below the rear bottom guard plate 32.

[0062] For example, multiple recesses 321 are arranged in a rectangular array on the rear bottom guard plate 32, and some of the recesses 321 are arranged close to the rear side of the rear bottom guard plate 32.

[0063] Optionally, the diameter of the opening of the recess 321 is φ, where 27mm ≤ φ ≤ 35mm. For example, φ can be 27mm, 29mm, 31mm, 32mm, 33mm, or 35mm.

[0064] The radius of curvature of the inner wall of the pit 321 is R3, where 55mm ≤ R3 ≤ 65mm. For example, R3 can be 55mm, 58mm, 60mm, 62mm, or 65mm.

[0065] The depth of pit 321 is M, where 3mm ≤ M ≤ 7mm. M can be 3mm, 4mm, 5mm, 6mm, or 7mm.

[0066] The airflow guiding component for vehicles in this embodiment of the present invention, by adopting the above-mentioned dimensions for the diameter φ, radius of curvature R3, and depth M of the recess 321, can further improve the fit between the airflow and the underbody protection plate 3, reduce the problem of turbulence under the rear underbody protection plate 32, and reduce driving resistance.

[0067] For example, the inner wall of the recess 321 can be designed to mimic the outer wall of a golf ball in order to further reduce the drag coefficient of the vehicle.

[0068] Optionally, such as Figure 1 As shown, the underbody protection plate 3 also includes a battery protection plate 33. The front underbody protection plate 31 is located on the front side of the battery protection plate 33, and the rear underbody protection plate 32 is located on the rear side of the battery protection plate 33. The front underbody protection plate 31, the battery protection plate 33, and the underbody protection plate 3 are all roughly at the same horizontal height, which can improve the airflow fit with the underbody protection plate 3 and reduce the vehicle's driving resistance.

[0069] In some embodiments, such as Figure 7 and Figure 8As shown, the aerodynamic assembly for the vehicle also includes a wheel arch 4, which comprises a wheel arch body 411 and a rounded chamfered portion 412. The wheel arch body 411 is connected to the underbody protection plate 3 via the rounded chamfered portion 412. Because the wheel arch body 411 is connected to the underbody protection plate 3 via the rounded chamfered portion 412, the connection between the wheel arch 4 and the underbody protection plate 3 is more rounded. When the vehicle is in motion, the airflow inside the wheel arch 4 can be quickly discharged under the guidance of the rounded chamfered portion 412, thereby further reducing the vehicle's driving resistance.

[0070] For example, the wheel cover 4 of the above-described structural form can be a front wheel cover 41 or a rear wheel cover 42. For example, the front wheel cover 41 includes a wheel cover body 411 and a rounded chamfered portion 412, which is connected to the front bottom guard plate 31.

[0071] The chamfer radius of the outer wall surface of the rounded chamfer portion 412 is R4, where 40mm ≤ R4 ≤ 60mm. For example, R4 can be 40mm, 45mm, 50mm, 55mm, or 60mm. By designing the chamfer radius R4 to the above parameters, the rounded chamfer portion 412 of this embodiment can further improve its airflow guiding effect, allowing the airflow inside the wheel cover 4 to be discharged quickly.

[0072] like Figure 7 As shown, a reinforcing rib 414 is provided on the rounded chamfer portion 412, which can strengthen the structure of the rounded chamfer portion 412. The reinforcing rib 414 can protrude towards the inner wall surface of the rounded chamfer portion 412. Compared with the scheme where the reinforcing rib 414 is arranged on the outer wall surface of the rounded chamfer portion 412, it can reduce the disturbance of the airflow by the reinforcing rib 414 and improve the fit between the airflow and the bottom of the vehicle body.

[0073] Optionally, such as Figure 7 As shown, the wheel arch 4 also includes a flange 413, which is located on the inner side of the front end of the chamfered portion 412 and extends in a direction away from the outer wall surface of the chamfered portion 412. It can be understood that the flange 413 blocks airflow from entering the upper side of the underbody protection plate 3, thereby reducing the problem of wind blew into the vehicle due to airflow entering the upper side of the underbody protection plate 3, and thus reducing the vehicle's drag.

[0074] like Figure 7 As shown, the extension length of the flange 413 can gradually decrease along both sides of the rounded chamfer 412 to facilitate the assembly of the wheel cover 4 and reduce the interference problem of the flange 413 during the assembly of the wheel cover 4.

[0075] like Figure 7As shown, the maximum extension length of the flange 413 is L3, where 30mm ≤ L3 ≤ 50mm. For example, L3 can be 30mm, 35mm, 40mm, 45mm, or 50mm. In this embodiment of the invention, the wheel cover 4, by adopting the above-described dimensional design for the flange 413, can prevent airflow from entering the upper side of the underbody protection plate 3, reducing the problem of wind blew into the vehicle due to airflow entering the upper side of the underbody protection plate 3. Furthermore, the flange 413 will not interfere with the installation of surrounding components, facilitating the subsequent assembly of the wheel cover 4.

[0076] In some embodiments, such as Figure 1 As shown, the aerodynamic components for the vehicle also include a front wheel deflector 5 and a front wheel arch 41. The front wheel arch 41 is connected to the underbody protection plate 3, and the front wheel deflector 5 is mounted on the front side of the front wheel arch 41. The front wheel deflector 5 can reduce the problem of airflow entering the front wheel arch 41 and impacting the chassis components connected to the tires, which helps to reduce the overall wind resistance of the vehicle.

[0077] like Figure 1 As shown, the aerodynamic components for the vehicle also include a rear wheel deflector 6 and a rear wheel arch 42. The rear wheel arch 42 is connected to the rear underbody protection plate 32, and the rear wheel deflector 6 is mounted on the front side of the rear wheel arch 42. The rear wheel deflector 6 can reduce the problem of airflow entering the rear wheel arch 42 and impacting the chassis components connected to the tires, which helps to reduce the overall wind resistance of the vehicle.

[0078] Another embodiment of the vehicle of this utility model includes: a vehicle body and a flow guide assembly. The flow guide assembly is the flow guide assembly for vehicles of this utility model. A front bumper 1 is located on the front side of the vehicle body, a rear bumper 2 is located on the rear side of the vehicle body, and a bottom guard plate 3 is located on the lower side of the vehicle body. The technical advantages of the vehicle of this utility model embodiment are the same as the technical advantages of the flow guide assembly for vehicles in the above embodiments, and will not be repeated here.

[0079] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0080] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0081] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0082] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0083] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0084] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A flow guiding component for a vehicle, characterized in that, include: Bottom guard plate (3); The front bumper (1) has a front lip (11) located on the front side of the bottom guard plate (3), and the lower wall of the front lip (11) gradually slopes downward in the direction from front to back. The rear bumper (2) has a rear diffuser (21) located on the rear side of the bottom guard plate (3), and the lower wall of the rear diffuser (21) gradually slopes upward in a direction from front to back.

2. The airflow guiding assembly for a vehicle according to claim 1, characterized in that, In the projection plane orthogonal to the left and right directions of the front lip (11), the outline of the lower wall of the front lip (11) is a first arc (111), and the center of curvature of the first arc (111) is located on the upper side of the first arc (111).

3. The airflow guiding assembly for a vehicle according to claim 2, characterized in that, The radius of curvature of the first arc (111) is R1, where 500mm≤R1≤1000mm; And / or, the length of the first arc (111) is L1, wherein 100mm≤L1≤120mm.

4. The airflow guiding assembly for a vehicle according to claim 1, characterized in that, In the projection plane orthogonal to the left and right directions of the rear diffuser (21), the outline of the lower wall of the rear diffuser (21) is a second arc (211), and the curvature center of the second arc (211) is located on the upper side of the second arc (211).

5. The aerodynamic assembly for a vehicle according to claim 4, characterized in that, The radius of curvature of the second arc (211) is R2, where 1000mm≤R2≤1500mm; And / or, the length of the second arc (211) is L2, wherein 150mm≤L2≤200mm.

6. The airflow guiding assembly for a vehicle according to claim 1, characterized in that, The angle between the lower wall of the front lip (11) and the plane where the bottom guard plate (3) is located is α, and the angle between the lower wall of the rear diffuser (21) and the plane where the bottom guard plate (3) is located is β, wherein 10°≤α≤25° and 10°≤β≤25°.

7. The airflow guiding assembly for a vehicle according to claim 1, characterized in that, The bottom guard plate (3) includes a front bottom guard plate (31), which is connected to the front lip (11). The lower wall surface of the front bottom guard plate (31) includes a smooth surface (311), and at least a portion of the smooth surface (311) is located on the front side of the front bottom guard plate (31).

8. The airflow guiding assembly for a vehicle according to claim 1, characterized in that, The bottom guard plate (3) includes a rear bottom guard plate (32), which is connected to the rear diffuser (21), and the lower wall surface of the rear bottom guard plate (32) has a recess (321) with a downward opening.

9. The airflow guiding assembly for a vehicle according to claim 8, characterized in that, There are multiple recesses (321), and the multiple recesses (321) are arranged at intervals along the front-back direction and the left-right direction of the rear bottom guard plate (32), and at least some of the recesses (321) are located on the rear side of the rear bottom guard plate (32).

10. The airflow guiding assembly for a vehicle according to claim 8, characterized in that, The diameter of the opening of the recess (321) is φ, where 27mm≤φ≤35mm; And / or, the radius of curvature of the inner wall surface of the recess (321) is R3, wherein 55mm≤R3≤65mm; And / or, the depth of the pit (321) is M, where 3mm≤M≤7mm.

11. The aerodynamic assembly for a vehicle according to any one of claims 1-10, characterized in that, The aerodynamic assembly for the vehicle also includes a wheel cover (4), which includes a wheel cover body (411) and a rounded chamfer (412). The wheel cover body (411) is connected to the underbody plate (3) through the rounded chamfer (412).

12. The airflow guiding assembly for a vehicle according to claim 11, characterized in that, The wheel cover (4) also includes a flange (413), which is located on the inner side of the front end of the rounded chamfer (412) and extends in a direction away from the outer wall surface of the rounded chamfer (412).

13. The airflow guiding assembly for a vehicle according to claim 12, characterized in that, The maximum extension length of the flange (413) is L3, wherein 30mm≤L3≤50mm; And / or, the chamfer radius of the outer wall surface of the chamfered portion (412) is R4, wherein 40mm≤R4≤60mm.

14. The aerodynamic assembly for a vehicle according to any one of claims 1-10, characterized in that, It also includes a front wheel dam (5) and a front wheel cover (41), the front wheel cover (41) being connected to the bottom guard plate (3), and the front wheel dam (5) being installed on the front side of the front wheel cover (41); And / or, the airflow deflector assembly for the vehicle further includes a rear wheel deflector (6) and a rear wheel cover (42), the rear wheel cover (42) being connected to the underbody protection plate (3), and the rear wheel deflector (6) being mounted on the front side of the rear wheel cover (42).

15. A vehicle, characterized in that, include: Vehicle body; A flow guide assembly, wherein the flow guide assembly is the flow guide assembly for a vehicle according to any one of claims 1-14, wherein the front bumper (1) is provided on the front side of the vehicle body, the rear bumper (2) is provided on the rear side of the vehicle body, and the underbody protection plate (3) is provided on the lower side of the vehicle body.

Images