Turbulent flow structure, bumper bottom guard plate and vehicle

Abstract

The utility model discloses a spoiler structure, bumper bottom guard board and vehicle, the spoiler structure includes two spoiler groups, the two spoiler groups are symmetrically arranged relative to the symmetry line, each spoiler group includes a first group of spoiler parts and a second group of spoiler parts, the first group of spoiler parts includes a plurality of first spoiler parts and a plurality of second spoiler parts that are regularly arranged, and the second group of spoiler parts includes a plurality of second spoiler parts and a plurality of second spoiler parts that are regularly arranged. And the second group of turbulent flow parts comprises a plurality of third turbulent flow parts which are irregularly arranged. The first turbulent flow part, the second turbulent flow part and the third turbulent flow part are used for guiding airflow to flow, the airflow separation degree of a vehicle body can be well controlled, energy loss is reduced, the wind resistance generated when the vehicle runs is reduced under the condition that parts are not increased, and the weight of the whole vehicle and the manufacturing cost are low.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a spoiler structure, a bumper bottom guard plate and a vehicle. Background Art

[0002] In related technologies, for freight vehicles in high-speed transportation scenarios, reducing wind resistance can play a key role in reducing the fuel consumption of the entire vehicle. At present, due to the influence of the flat-head vehicle structure, the direction of optimizing the wind resistance of the entire vehicle generally adopts methods such as adding a deflector, a front hood wind deflector, and a bumper rubber strip. However, all of the above methods require adding parts to reduce the wind resistance of the entire vehicle, and adding parts will cause a certain degree of increase in the weight and cost of the entire vehicle. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a spoiler structure, which uses a spoiler to guide the flow of air, can better control the degree of airflow separation of the vehicle body, reduce energy loss, reduce the wind resistance of the vehicle when driving without adding parts, and the weight and manufacturing cost of the whole vehicle are low.

[0004] The utility model further provides a bumper bottom guard plate.

[0005] The utility model also provides a vehicle.

[0006] According to the spoiler structure of the first aspect of the utility model, the two spoiler groups are symmetrically arranged with respect to the symmetry line, each of the spoiler groups includes a first group of spoilers and a second group of spoilers, the first group of spoilers includes a plurality of first spoilers and a plurality of second spoilers arranged regularly, and the second group of spoilers includes a plurality of third spoilers arranged irregularly.

[0007] According to the spoiler structure of the embodiment of the utility model, the first spoiler, the second spoiler and the third spoiler are used to guide the airflow, which can better control the degree of airflow separation of the vehicle body, reduce energy loss, and reduce the wind resistance of the vehicle when driving without adding components. The weight and manufacturing cost of the whole vehicle are relatively low.

[0008] According to some embodiments of the present invention, all of the first spoilers form a plurality of rows of first spoilers arranged at intervals along the first direction, each row of the first spoilers includes a plurality of first spoilers arranged at intervals along the second direction, all of the second spoilers form a plurality of rows of second spoilers arranged at intervals along the first direction, each row of the second spoilers includes a plurality of second spoilers arranged at intervals along the second direction, the line of symmetry extends along the first direction, and the first direction is arranged at an angle to the second direction.

[0009] According to some embodiments of the present invention, each row of the second spoilers is located between two adjacent rows of the first spoilers, and in each row of the second spoilers there is at least one second spoiler located between two adjacent first spoilers along the second direction.

[0010] According to some embodiments of the present invention, the surface areas where the multiple first spoilers and the multiple second spoilers arranged around the second group of spoilers in the first group of spoilers are located are all first areas, the surface area where the second group of spoilers are located is the second area, and the first area and the second area are spaced apart in a third direction, and the third direction is perpendicular to the first direction and the second direction, respectively.

[0011] According to some embodiments of the present invention, the projection shape of the first spoiler, the second spoiler or the third spoiler on the profile area where it is located is one of a circle, an ellipse, a triangle and a rectangle, and the first spoiler, the second spoiler or the third spoiler is one of a pit, a protrusion and a groove.

[0012] According to some embodiments of the present invention, the first spoiler, the second spoiler and the third spoiler are all hemispherical protrusions, the diameter of the hemispherical protrusion is D and the height is H, D and H respectively satisfy the relationship: 10mm≤D≤20mm, 6mm≤H≤8mm, the center distance between two adjacent hemispherical protrusions in the first direction and / or the second direction is L1, L1 satisfies the relationship: 40mm≤L1≤50mm.

[0013] The bumper bottom guard plate according to the second aspect of the utility model embodiment includes a bottom guard plate body and the spoiler structure arranged on the bottom profile of the bottom guard plate body, wherein the first direction is the front-to-back direction, the second direction gradually bends backward relative to the left-to-right direction with the intersection with the symmetry line as the starting point, and the symmetry line is the center line of the bottom guard plate body.

[0014] According to some embodiments of the present invention, the center distance between the first spoiler in the front row and the second spoiler in the front row is L2, the width of the front edge of the bottom guard plate body is L3, and L2 and L3 satisfy the relationship: L2=L3.

[0015] According to some embodiments of the utility model, a long groove is formed on each of the left and right sides of the bottom profile of the bottom guard plate body, a triangular protrusion is formed in the long groove, the second group of spoilers is located in the triangular protrusion, and the multiple first spoilers and multiple second spoilers in the first group of spoilers arranged around the second group of spoilers are all located in the long groove.

[0016] The vehicle according to the third aspect of the utility model comprises a bumper bottom guard plate, a front cover, a side door panel, a rearview mirror and a roof cover, and the spoiler structure is arranged on one or more of the bumper bottom guard plate, the front cover, the side door panel, the rearview mirror and the roof cover.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 The structure of the bottom guard plate of the bumper according to the embodiment of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 2 The structure of the bottom guard plate of the bumper according to the embodiment of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 3 yes Figure 1 A partial schematic diagram in FIG.

[0022] Figure 4 It is a partial schematic diagram of the spoiler according to the embodiment of the utility model Figure 1 ;

[0023] Figure 5 It is a partial schematic diagram of the spoiler according to the embodiment of the utility model Figure 2 ;

[0024] Figure 6 yes Figure 2 Partial schematic diagram B.

[0025] Reference numerals:

[0026] 100. Bumper bottom guard plate;

[0027] 11. First group of spoilers; 111. First spoiler; 112. Second spoiler; 12. Second group of spoilers; 121. Third spoiler; 13. First area; 14. Second area. DETAILED DESCRIPTION

[0028] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0029] Reference below Figure 1-Figure 6The spoiler structure according to the embodiment of the utility model is described. The utility model also provides a bumper bottom guard plate 100. Furthermore, the utility model also provides a vehicle.

[0030] Reference Figure 1-3 As shown, the spoiler structure of the embodiment of the utility model includes two spoiler groups, which are symmetrically arranged relative to the symmetry line. Each spoiler group includes a first group of spoilers 11 and a second group of spoilers 12. The first group of spoilers 11 includes a plurality of first spoilers 111 and a plurality of second spoilers 112 that are evenly and regularly arranged, and the second group of spoilers 12 includes a plurality of third spoilers 121 that are irregularly arranged.

[0031] When a vehicle is traveling at high speed, air flows through various parts of the vehicle body. Ideally, the air flow should flow close to the surface of the vehicle body. However, air flow separation is likely to occur on the non-smooth surface of the vehicle body and at sudden angles. Turbulence is likely to form in the area where air flow separates, and the air pressure is low, which will attract the surrounding high-pressure air flow to flow to the low-pressure area, thereby increasing wind resistance. Overcoming wind resistance requires additional energy, which will increase vehicle energy consumption. In order to reduce wind resistance, it is necessary to reduce air flow separation on the surface of the vehicle body.

[0032] The spoiler structure can be arranged on various components of the vehicle where airflow separation is serious. The spoiler structure includes two spoiler groups. The two spoiler groups are symmetrically arranged relative to the symmetry line, and can evenly control the airflow near the spoiler structure.

[0033] Among them, the spoiler group is divided into two groups of spoilers. The first group of spoilers 11 and the second group of spoilers 12 can be concentrated in different areas and have different distribution areas. The first group of spoilers 11 and the second group of spoilers 12 can both be used to guide the direction of airflow to make the airflow more closely fit the flow of the vehicle body. For example, different groups of spoilers arranged on the front bumper can guide the airflow to the sides and bottom of the vehicle, reduce turbulence caused by airflow separation, and reduce wind resistance without adding components.

[0034] Specifically, the first group of spoilers 11 includes a plurality of first spoilers 111 and a plurality of second spoilers 112, and the second group of spoilers 12 includes a plurality of third spoilers 121. The first spoilers 111, the second spoilers 112, and the third spoilers 121 help to improve the smoothness of the position where the vehicle body surface has a large sudden change in angle, and can reduce airflow separation. In addition, the structure of the spoiler itself will hinder the airflow, and the airflow needs to flow around the spoiler. A low-speed flow can be formed behind the spoiler, which reduces the velocity gradient inside the boundary layer, increases the thickness of the boundary layer, and reduces the energy consumed by the viscous shear force to do work, thereby achieving the purpose of reducing the wind resistance coefficient of the whole vehicle.

[0035] Furthermore, the boundary layer refers to the area where the airflow is close to the surface of the solid, and the velocity gradient refers to the rate of change of velocity along the direction of the airflow. When the airflow flows along the surface of the vehicle body, due to the effect of viscosity, the velocity of the airflow in the area close to the surface of the vehicle body will gradually decrease, resulting in a velocity gradient. The reduction of the velocity gradient inside the boundary layer can reduce the speed difference between the airflow and the surface of the vehicle body, thereby reducing friction resistance and reducing the drag coefficient of the vehicle.

[0036] Therefore, the spoiler blocks the airflow so that the airflow after passing through the spoiler flows at a low speed, which can reduce the velocity gradient inside the boundary layer. Also, the greater the velocity gradient, the thinner the boundary layer. The velocity gradient decreases and the thickness of the boundary layer increases. In some cases, the airflow may separate in the thinner boundary layer, resulting in increased wind resistance. By increasing the thickness of the boundary layer, the adhesion of the airflow in the boundary layer can be improved, reducing the separation of the airflow.

[0037] The first spoiler 111 and the second spoiler 112 are arranged regularly, and the third spoiler 121 is arranged irregularly, that is, a plurality of first spoilers 111 are arranged in rows and columns, and a plurality of second spoilers 112 are arranged in rows and columns, and a plurality of third spoilers 121 are arranged irregularly. In this way, the airflow is relatively uniform and stable when passing through the regularly arranged first spoilers 111 and second spoilers 112, which helps to keep the airflow on the surface of the vehicle body smooth and reduce air resistance, while the irregularly arranged third spoilers 121 can break the local vortex, help the airflow to reattach, and reduce the airflow separation in a specific area. The appropriately irregularly arranged third spoilers 121 can help the airflow to transition smoothly. By staggering the regularly arranged first spoilers 111 and second spoilers 112 with the irregularly arranged third spoilers 121, and utilizing the different effects of different spoilers in disturbing the airflow, the uniformity of the airflow can be maintained over a large range of the vehicle body surface, while the regularity of the airflow can be broken locally, large-scale eddies can be reduced, the airflow can be smoothly transitioned between different areas, the airflow separation phenomenon can be reduced, and thus the wind resistance can be reduced.

[0038] Therefore, by guiding the airflow using the first spoiler 111, the second spoiler 112 and the third spoiler 121, the degree of airflow separation of the vehicle body can be better controlled, energy loss can be reduced, and wind resistance of the vehicle when driving can be reduced without adding components, and the weight and manufacturing cost of the entire vehicle are relatively low.

[0039] Reference Figure 1-3As shown, all the first spoilers 111 form a plurality of rows of first spoilers 111 arranged at intervals along the first direction, each row of first spoilers 111 includes a plurality of first spoilers 111 arranged at intervals along the second direction, all the second spoilers 112 form a plurality of rows of second spoilers 112 arranged at intervals along the first direction, each row of second spoilers 112 includes a plurality of second spoilers 112 arranged at intervals along the second direction, the line of symmetry extends along the first direction, and the first direction is arranged at an angle to the second direction.

[0040] It is understandable that when the spoiler structure is set on a vehicle component, the first direction and the second direction can be defined according to actual conditions. For example, the first direction and the second direction can be set perpendicularly, such as the first direction can be up and down, left and right, or front and back, and the corresponding second direction can be front and back, up and down, or left and right; the first direction and the second direction can also be set at an angle, and the angle between the first direction and the second direction is determined by the structure of the component.

[0041] Furthermore, the symmetry line extends along the first direction, and the two spoiler groups are symmetrically distributed on both sides of the first direction. All the first spoiler portions 111 of the first group of spoilers 11 in each spoiler group are arranged at intervals along the first direction, and multiple rows of first spoiler portions 111 are formed in the first direction. The multiple rows of first spoiler portions 111 are arranged regularly, thereby also forming an effect of being arranged at intervals along the second direction in the second direction.

[0042] All the second spoilers 112 of the first group of spoilers 11 are also arranged at intervals along the first direction, and multiple rows of second spoilers 112 are formed in the first direction. The multiple rows of second spoilers 112 are arranged regularly, thereby forming an effect of being arranged at intervals along the second direction in the second direction.

[0043] Reference Figure 1-3As shown, each row of second spoilers 112 is located between two adjacent rows of first spoilers 111, and in each row of second spoilers 112 there is at least one second spoiler 112 located between two adjacent first spoilers 111 along the second direction, that is, in each row of second spoilers 112, only a specific or a part of the second spoilers 112 at positions close to the line of symmetry are staggered with the first spoilers 111, and the second spoilers 112 at positions away from the line of symmetry are aligned with the first spoilers 111. Generally speaking, vortices are more likely to be generated on both sides of the spoiler structure. The first spoiler 111 and the second spoiler 112 far away from the symmetry line are aligned, which can better control the smooth flow of the passing airflow and avoid the formation of vortices. The first spoiler 111 and the second spoiler 112 close to the symmetry line are staggered, which can reduce the local pressure fluctuation near the symmetry line, thereby reducing wind noise and vibration. The different arrangement positions of the spoilers in the middle and left and right sides of the spoiler structure have obvious differences in the airflow disturbance effect, which can optimize the airflow path, reduce the generation of vortices, and further reduce wind resistance.

[0044] Reference Figure 1-3 As shown, the profile areas where the multiple first spoilers 111 and the multiple second spoilers 112 arranged around the second group of spoilers 12 in the first group of spoilers 11 are located are all first areas 13, and the profile area where the second group of spoilers 12 are located is the second area 14, and the first areas 13 and the second areas 14 are spaced apart in a third direction, and the third direction is perpendicular to the first direction and the second direction, respectively.

[0045] Specifically, the second group of spoilers 12 are concentrated in the same profile area, which is called the second area 14. In the same spoiler group, the first spoilers 111 and the second spoilers 112 in the first group of spoilers 11 are arranged around the second group of spoilers 12, and the profile area where the first spoilers 111 and the second spoilers 112 are located is called the first area 13. Since the two spoiler groups are symmetrically arranged, the spoiler structure can have two first areas 13 and two second areas 14.

[0046] Among them, the first area 13 and the second area 14 may not be arranged on the same plane, that is, the first area 13 and the second area 14 are arranged at intervals in the third direction. In this way, the third spoiler 121 is not on the same plane relative to the first spoiler 111 and the second spoiler 112, and the area where the third spoiler 121 disturbs the airflow is different from the area where the first spoiler 111 and the second spoiler 112 disturb the airflow, the control range of the spoiler structure on the airflow is increased, and the difference in airflow between the second area 14 and the position close to the symmetry line can be increased, the path of the airflow is optimized, the generation of vortices is reduced, and the wind resistance is further reduced.

[0047] Preferably, the second region 14 is arranged away from the symmetry line.

[0048] Furthermore, the projection shape of the first spoiler 111, the second spoiler 112 or the third spoiler 121 on the profile area where it is located is one of a circle, an ellipse, a triangle and a rectangle, and the first spoiler 111, the second spoiler 112 or the third spoiler 121 is one of a pit, a protrusion and a groove.

[0049] That is to say, the projection shape of the first spoiler 111, the second spoiler 112 or the third spoiler 121 can be any shape such as a circle, an ellipse, a triangle or a rectangle, and the projection shape does not affect the spoiler's spoiling effect. Figure 5 As shown, the projection shape of the spoiler in this embodiment is circular.

[0050] Furthermore, the first spoiler 111, the second spoiler 112 or the third spoiler 121 may be one of a pit, a protrusion and a groove. Figure 4 As shown, in the present embodiment, the spoiler is a protrusion. During the driving process of the vehicle, the airflow flows through the spoiler structure and is obstructed by the spoiler of the protrusion. Part of the airflow flows to the two sides of the protrusion and merges with the airflow in the pit formed between the two protrusions. Part of the airflow flows backward along the surface of the protrusion and merges with the incoming flow. Due to the obstruction of the protrusion, the airflow behind the protrusion forms a low-speed flow, which reduces the velocity gradient inside the boundary layer, increases the thickness of the boundary layer, and reduces the energy consumed by the viscous shear force to do work, thereby achieving the purpose of reducing the wind resistance coefficient of the whole vehicle.

[0051] In addition to the protrusions in this embodiment, the first spoiler 111, the second spoiler 112 or the third spoiler 121 can also be in the form of a pit or a groove, wherein the projection shape and form can be combined with each other, for example, an elliptical protrusion, a triangular pit or a rectangular groove, etc.

[0052] Reference Figure 4 As shown, the first spoiler 111, the second spoiler 112 and the third spoiler 121 are all hemispherical protrusions, the diameter of the hemispherical protrusion is D and the height is H, and D and H respectively satisfy the relationship: 10mm≤D≤20mm, 6mm≤H≤8mm. That is, the diameter of the hemispherical protrusion is not less than 10mm and not more than 20mm, and the height of the protrusion is not less than 6mm and not more than 8mm. If the diameter is too large, the density of the spoiler will be reduced, the boundary layer will be unstable, the airflow will be easily separated, and the effect of reducing wind resistance will be poor. If the diameter is too small, it will be subject to process restrictions, it will be difficult to form during production, and the production cost will increase.

[0053] Similarly, if the height of the protrusion is too high, it will be limited by the process, difficult to form during production, and the production cost will increase. If the height of the protrusion is too low, it will not effectively reduce the velocity gradient inside the boundary layer, and the effect of reducing wind resistance will be poor. Specifically, in this embodiment, the height of the protrusion is 16mm. According to the test results, the diameter and height of the protrusion within the above range can reduce the vehicle drag coefficient to the greatest extent under the premise of production and molding.

[0054] Reference Figure 5 As shown, the center distance between two adjacent hemispherical protrusions in the first direction and / or the second direction is L1, and L1 satisfies the relationship: 40mm≤L1≤50mm. That is, the center distance between two adjacent hemispherical protrusions in the first direction or the second direction is not less than 40mm and not more than 50mm. Since the protrusions are arranged on the non-smooth surface of the vehicle, the distance between adjacent protrusions at different positions is different. The protrusion distance is in the range of 40mm to 50mm, and the distribution on the spoiler structure is more reasonable.

[0055] Reference Figure 1-3 As shown, the bumper bottom guard plate 100 of the second embodiment of the utility model includes a bottom guard plate body and a spoiler structure arranged on the bottom surface of the bottom guard plate body, wherein the first direction is the front-to-back direction, and the second direction gradually bends backward relative to the left-to-right direction with the intersection with the symmetry line as the starting point, and the symmetry line is the center line of the bottom guard plate body.

[0056] That is to say, the spoiler structure can be arranged on the bumper bottom guard plate 100, and the corresponding first direction is set as the front and rear direction of the bumper bottom guard plate 100. The second direction is bent from the center line of the bottom guard plate body to the left and right sides and backward, and ends at the junction of the bumper and the step. Since there is an angle between the first direction and the second direction, and the angle between the two gradually changes with the extension direction of the second direction, the angles at different positions are different, which has a better effect on the disturbance of the airflow, thereby further reducing the drag coefficient. The first spoiler 111 and the second spoiler 112 in each row and column are set with the curvature of the spoiler structure, which can produce a certain guiding effect on the forward flow and the flow on both sides.

[0057] In addition, the turning point where the front of the vehicle meets the body is more prone to air flow separation and turbulence. When the airflow flows through the front of the vehicle body, it will be blocked by the turning point and cause disorder and turbulence, resulting in increased air resistance. Therefore, the spoiler structure extends to this area along the second direction to enhance the ability to control the airflow and reduce the impact of wind resistance on vehicle driving.

[0058] Reference Figure 6As shown, the center distance between the first spoiler 111 in the front row and the second spoiler 112 in the front row is L2, the width of the front edge of the bottom guard body is L3, and L2 and L3 satisfy the relationship: L2 = L3. That is, in the spoiler structure of the bumper bottom guard 100, the center distance between the first spoiler 111 in the front row and the second spoiler 112 in the front row is as wide as the front edge of the bottom guard body, and the airflow in front of the bumper bottom guard 100 is affected by the ground airflow in front of the vehicle, and is more likely to separate and turbulent. The design that the center distance between the first spoiler 111 in the front row and the second spoiler 112 in the front row is as wide as the front edge of the bottom guard body can better control the airflow in front of the bumper bottom guard 100, reduce airflow separation, and reduce wind resistance.

[0059] Reference Figure 1-3 As shown, a long groove is formed on the left and right sides of the bottom profile of the bottom guard plate body, a triangular protrusion is formed in the long groove, the second group of spoilers 12 is located in the triangular protrusion, and the multiple first spoilers 111 and multiple second spoilers 112 arranged around the second group of spoilers 12 in the first group of spoilers 11 are all located in the long groove.

[0060] Specifically, the second group of spoilers 12 are located on the triangular protrusion, and the profile area on the triangular protrusion is the second area 14. The second group of spoilers 12 are arranged irregularly on the triangular protrusion. The multiple first spoilers 111 and the multiple second spoilers 112 arranged around the second group of spoilers 12 in the first group of spoilers 11 are all located in the long groove, that is, the first area 13 is located in the long groove. In this embodiment, the second area 14 is raised relative to the first area 13, and the third direction can be the up and down direction.

[0061] According to the third embodiment of the utility model, the vehicle comprises a bumper bottom guard plate 100, a front mask, a side door plate, a rearview mirror and a roof cover, and a spoiler structure is arranged on one or more of the bumper bottom guard plate 100, the front mask, the side door plate, the rearview mirror and the roof cover. That is to say, the spoiler structure is not limited to being arranged on the bumper bottom guard plate 100 of the vehicle, but can also be arranged at other positions such as the front mask, the side door plate, the A-pillar, the rearview mirror and the roof cover, and can be arranged alone or at any number of the above structures at the same time, so as to guide the airflow flow, reduce the airflow separation and thus achieve the purpose of reducing the wind resistance coefficient of the vehicle.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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 invention.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", 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 utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0064] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A spoiler structure, characterized in that: The invention comprises two spoiler groups, which are symmetrically arranged relative to a symmetry line, each of which comprises a first group of spoilers and a second group of spoilers, the first group of spoilers comprises a plurality of first spoilers and a plurality of second spoilers which are arranged uniformly and regularly, and the second group of spoilers comprises a plurality of third spoilers which are arranged irregularly.

2. The spoiler structure according to claim 1, characterized in that: All of the first spoilers form a plurality of rows of first spoilers arranged at intervals along a first direction, each row of the first spoilers includes a plurality of first spoilers arranged at intervals along a second direction, all of the second spoilers form a plurality of rows of second spoilers arranged at intervals along the first direction, each row of the second spoilers includes a plurality of second spoilers arranged at intervals along the second direction, the line of symmetry extends along the first direction, and the first direction is arranged at an angle to the second direction.

3. The spoiler structure according to claim 2, characterized in that: Each row of the second spoilers is located between two adjacent rows of the first spoilers, and in each row of the second spoilers there is at least one second spoiler located between two adjacent first spoilers along the second direction.

4. The spoiler structure according to claim 2, characterized in that: The profile areas where the multiple first spoilers and the multiple second spoilers arranged around the second group of spoilers in the first group of spoilers are located are all first areas, the profile area where the second group of spoilers are located is the second area, and the first area and the second area are spaced apart in a third direction, and the third direction is perpendicular to the first direction and the second direction, respectively.

5. The spoiler structure according to claim 1, characterized in that: The projection shape of the first spoiler, the second spoiler or the third spoiler on the profile area where it is located is one of a circle, an ellipse, a triangle and a rectangle, and the first spoiler, the second spoiler or the third spoiler is one of a pit, a protrusion and a groove.

6. The spoiler structure according to claim 5, characterized in that: The first spoiler, the second spoiler and the third spoiler are all hemispherical protrusions, the diameter of the hemispherical protrusion is D and the height is H, D and H respectively satisfy the relationship: 10mm≤D≤20mm, 6mm≤H≤8mm, the center distance between two adjacent hemispherical protrusions in the first direction and / or the second direction is L1, and L1 satisfies the relationship: 40mm≤L1≤50mm.

7. A bumper bottom guard plate, characterized in that: It includes a bottom guard plate body and a spoiler structure as described in any one of claims 1 to 6 arranged on the bottom surface of the bottom guard plate body, wherein the first direction is the front-to-back direction, the second direction gradually bends backward relative to the left-to-right direction with the intersection with the symmetry line as the starting point, and the symmetry line is the center line of the bottom guard plate body.

8. The bumper bottom guard plate according to claim 7, characterized in that: The center distance between the first spoiler in the front row and the second spoiler in the front row is L2, the width of the front edge of the bottom guard plate body is L3, and L2 and L3 satisfy the relationship: L2=L3.

9. The bumper bottom guard plate according to claim 7, characterized in that: A long groove is formed on the left and right sides of the bottom profile of the bottom guard plate body, a triangular protrusion is formed in the long groove, the second group of spoilers is located in the triangular protrusion, and the multiple first spoilers and multiple second spoilers in the first group of spoilers arranged around the second group of spoilers are all located in the long groove.

10. A vehicle, characterized in that: The invention comprises a bumper bottom guard plate, a front cover, a side door plate, a rearview mirror and a roof cover, wherein one or more of the bumper bottom guard plate, the front cover, the side door plate, the rearview mirror and the roof cover is provided with a spoiler structure according to any one of claims 1 to 6.

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