Flow guide device, bottom guard plate assembly and vehicle

Abstract

The invention relates to a flow guide device, a bottom guard plate assembly and a vehicle, the flow guide device comprises a flow guide body, the flow guide body comprises a windward flow guide face and a leeside located on the back side of the windward flow guide face, the flow guide body is arranged on a vehicle bottom guard plate, and the leeside is located in front of vehicle tires. The windward flow guide surface at least comprises a first curved surface and a second curved surface connected with the edge of the first curved surface, at least part of the first curved surface is bent in the direction deviating from the vehicle tire, and the second curved surface is bent in the direction deviating from the vehicle bottom guard plate, so that airflow generated when a vehicle runs cannot directly impact on the vehicle tire; the air flow impacts on the windward flow guide face of the flow guide device instead of impacting on the windward flow guide face of the flow guide device, so that the air flow can be guided through the windward flow guide face and then flows to the outer side of a vehicle tire without impacting on the vehicle tire to form a high-pressure area, wind resistance is effectively reduced, and economical efficiency of a vehicle is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, and in particular to a deflector, an underbody guard plate assembly and a vehicle. Background Art

[0002] As energy issues become increasingly severe, improving the economy of cars (fuel consumption, driving range) has become one of the key issues that OEMs at home and abroad are concerned about. There is a vital relationship between wind resistance and the economy of cars. For example, for fuel cars, reducing wind resistance can significantly reduce the fuel consumption of fuel cars when driving at high speeds; for electric cars, reducing wind resistance can increase the driving range of electric cars. Therefore, reducing the drag coefficient of cars has become a key issue that major OEMs are concerned about and studying.

[0003] At present, when a car is driving, the high-speed airflow generated during the driving process will directly impact the vehicle tires, causing a high-pressure area to form on the front of the vehicle tires, resulting in increased wind resistance, which in turn affects the economy of the car. Summary of the invention

[0004] In order to solve the above technical problems, the present disclosure provides a guide device, an underbody guard plate assembly and a vehicle.

[0005] In a first aspect, the present disclosure provides a flow guide device, comprising a flow guide body, the flow guide body comprising a windward flow guide surface and a leeward surface located on the back side of the windward flow guide surface, the flow guide body being arranged on a vehicle bottom guard plate and the leeward surface being located in front of a vehicle tire;

[0006] The windward deflector surface includes at least a first curved surface and a second curved surface connected to the edge of the first curved surface, at least a portion of the first curved surface is bent away from the vehicle tire, and the second curved surface is bent away from the vehicle bottom guard plate.

[0007] In some embodiments, the flow guide body includes a flow guide front wall and a flow guide side wall connected to at least one side of the flow guide front wall;

[0008] At least a portion of a surface of the guide front wall facing away from the vehicle tire and a portion of a surface of the guide side wall facing away from the vehicle tire together form the first curved surface.

[0009] In some embodiments, a front end of the guide side wall is connected to one side of the guide front wall, the guide side wall extends in a direction away from the guide front wall, and the guide side wall protrudes in a direction away from the guide front wall.

[0010] In some embodiments, the front end of the guide side wall and the junction of the guide front wall are smoothly transitioned;

[0011] And / or, there are two flow-guiding side walls, and the two flow-guiding side walls are respectively arranged on both sides of the flow-guiding front wall.

[0012] In some embodiments, the flow guide body further includes a flow guide top wall;

[0013] The guide top wall is arranged on the top of the guide front wall and the guide side wall and is connected to the guide front wall and the guide side wall respectively;

[0014] The side of the guide top wall facing away from the vehicle tire forms the second curved surface.

[0015] In some embodiments, the junction between the flow guide top wall and the flow guide front wall is smoothly transitioned;

[0016] And / or, the junction between the flow guide top wall and the flow guide side wall has a smooth transition.

[0017] In some embodiments, the guide side wall, the guide top wall and the guide front wall are integrally formed.

[0018] In some embodiments, projections of both side edges of the guide body in the width direction of the vehicle are located outside the tires of the vehicle.

[0019] In some embodiments, the dimension of the guide body in the height direction of the vehicle is not greater than 60 mm; and / or, the dimension of the guide body in the length direction of the vehicle is not greater than 60 mm; and / or, the dimension of the guide body in the width direction of the vehicle is not greater than 120 mm.

[0020] In a second aspect, the present disclosure provides an underbody guard assembly, including a vehicle underbody guard and a deflector;

[0021] The deflector is disposed on at least one side of the vehicle underbody guard along a width direction of the vehicle.

[0022] In some embodiments, there are two flow-guiding devices, which are disposed on both sides of the vehicle bottom guard plate, and one flow-guiding device corresponds to one vehicle tire.

[0023] In some embodiments, the deflector body is detachably connected to the vehicle bottom guard plate.

[0024] In some embodiments, an extension ear is provided on one side of the guide body close to the vehicle bottom guard plate, a first connecting hole is provided on the extension ear, and a second connecting hole is provided on the vehicle bottom guard plate. The guide body is connected to the vehicle bottom guard plate by a first fastener passing through the first connecting hole and the second connecting hole.

[0025] In a third aspect, the present disclosure provides a vehicle including a deflector or an underbody guard plate assembly.

[0026] In some embodiments, a mounting portion is provided on a side of the guide body facing away from the vehicle tire, and the mounting portion is used to be connected to a body of the vehicle.

[0027] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0028] The present disclosure provides a guide device, an underbody guard assembly, and a vehicle. The guide device is configured to include a guide body, the guide body includes a windward guide surface and a leeward surface located on the back side of the windward guide surface, the guide body is arranged on the underbody guard of the vehicle, and the leeward surface is located in front of the vehicle tire. The windward guide surface at least includes a first curved surface and a second curved surface connected to the edge of the first curved surface, at least a portion of the first curved surface is bent in a direction away from the vehicle tire, and the second curved surface is bent in a direction away from the underbody guard of the vehicle, so that the airflow generated when the vehicle is driving can flow along the first curved surface and the second curved surface, that is, a portion of the airflow can be guided along the first curved surface, and another portion of the airflow can be guided along the second curved surface, and because the first curved surface is bent in a direction away from the vehicle tire, and the second curved surface is bent in a direction away from the underbody guard of the vehicle, that is, the first curved surface and the second curved surface are bent. The directions of the curves are different, so that the airflow can be diverted in different directions after impacting the first curved surface and the second curved surface, that is, the airflow can be diverted and diverted through the first curved surface and the second curved surface, thereby further effectively improving the airflow diversion and diversion effect, so that the airflow generated when the vehicle is driving will not directly impact the vehicle tire, but will impact the first curved surface and the second curved surface of the guide device, so that the airflow can flow to the outside of the vehicle tire after being guided by the first curved surface and the second curved surface, and will not impact the vehicle tire to form a high-pressure area, thereby effectively reducing wind resistance and improving the economy of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0031] Figure 1 The structure of the flow guide device according to the embodiment of the present disclosure is shown in FIG. Figure 1 ;

[0032] Figure 2 The structure of the flow guide device according to the embodiment of the present disclosure is shown in FIG. Figure 2 ;

[0033] Figure 3 The structure of the bottom guard plate assembly described in the embodiment of the present disclosure is shown in FIG. Figure 1 ;

[0034] Figure 4 The structure of the bottom guard plate assembly described in the embodiment of the present disclosure is shown in FIG. Figure 2 .

[0035] Reference numerals:

[0036] 1. guide body; 11. windward guide surface; 121. extension ear; 122. first connection hole; 2. vehicle bottom guard plate; 3. guide front wall; 4. guide top wall; 5. guide side wall; 6. first fastener; 7. mounting part. DETAILED DESCRIPTION

[0037] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0039] Embodiment 1

[0040] Reference Figure 1 and Figure 2 As shown, this embodiment provides a flow guide device, including a flow guide body 1. The flow guide body 1 includes a windward flow guide surface 11 and a leeward surface located on the back side of the windward flow guide surface 11. The flow guide body 1 is arranged on the vehicle bottom guard plate 2 and the leeward surface is located in front of the vehicle tire.

[0041] The windward deflector surface 11 includes at least a first curved surface and a second curved surface connected to the edge of the first curved surface. At least a portion of the first curved surface is bent away from the vehicle tire, and the second curved surface is bent away from the vehicle bottom guard plate 2.

[0042] In specific implementation, the guide body 1 is arranged on the vehicle bottom guard plate 2 and the leeward side is located in front of the vehicle tire. The front refers to the direction from the front to the rear of the vehicle. The guide body 1 is located on the side of the vehicle tire close to the front of the vehicle, so that the high-speed airflow generated by the vehicle during driving first hits the guide body 1 located in front of the vehicle tire, and is discharged after being guided by the windward guide surface 11, without hitting the vehicle tire to generate a high-pressure area, thereby reducing wind resistance and improving the economy of the vehicle.

[0043] Specifically, the windward guide surface 11 of the guide body 1 is the surface that first contacts the high-speed airflow during the driving of the vehicle. The windward guide surface 11 includes a first curved surface bent in a direction away from the vehicle tire and a second curved surface bent in a direction away from the vehicle bottom guard plate 2, so that the airflow generated when the vehicle is driving can flow along the first curved surface and the second curved surface, that is, a part of the airflow can be guided along the first curved surface, and the other part of the airflow can be guided along the second curved surface. Since the first curved surface is bent in a direction away from the vehicle tire, and the second curved surface is bent in a direction away from the vehicle bottom guard plate 2, that is, the first curved surface is bent in a direction away from the vehicle tire, and the second curved surface is bent in a direction away from the vehicle bottom guard plate 2, that is, the first curved surface is bent in a direction away from the vehicle tire. The curved surface and the second curved surface have different bending directions, so that the airflow can be diverted from different directions after impacting the first curved surface and the second curved surface, that is, the airflow can be diverted and diverted through the first curved surface and the second curved surface, thereby further effectively improving the airflow diversion and diversion effect, so that the airflow generated when the vehicle is driving will not directly impact the vehicle tire, but will impact the first curved surface and the second curved surface of the guide body 1, so that the airflow can flow to the outside of the vehicle tire after being guided by the first curved surface and the second curved surface, and will not impact the vehicle tire to form a high-pressure area, thereby effectively reducing wind resistance and improving the economy of the vehicle.

[0044] It should be noted that the outer side of the vehicle tire may refer to, for example, at least one side of the vehicle tire in the width direction of the vehicle, so that the high-speed airflow is discharged to at least one side of the vehicle tire after being guided by the windward guide surface 11. Figure 2 As shown, the outer side of the vehicle tire may specifically refer to both sides of the vehicle tire along the width direction of the vehicle, so that the high-speed airflow is guided by the windward guide surface 11 and then flows to the outside of both sides of the vehicle tire before being discharged.

[0045] It has been found through specific actual measurements that after the guide body 1 is provided, the vehicle drag coefficient can be reduced by 0.016. For electric vehicles, the cruising range can be increased by 10 kilometers.

[0046] For example, refer to Figure 2 and Figure 3As shown, the guide device on the left is used as an example to illustrate: the high-speed airflow generated during the vehicle's driving flows from the front to the rear of the vehicle. Figure 2 and Figure 3 As shown by the solid arrow in the figure. Since the guide body 1 is located in front of the vehicle tire, the high-speed airflow first hits the windward guide surface 11 of the guide body 1 during the flow process. Since the windward guide surface 11 is set as a curved surface convex in the direction away from the vehicle tire, the high-speed airflow will be diverted into two airflows by the windward guide surface 11 after hitting the windward guide surface 11 and discharged from the left and right sides of the guide body 1 without hitting the vehicle tire, so that the wind resistance can be effectively reduced. The specific flow direction of the gas after diversion can be referred to Figure 2 and Figure 3 Specifically, an airflow discharged from the left side of the guide body 1 will be directly discharged to the outside of the vehicle, while an airflow discharged from the right side of the guide body 1 will flow to the center of the vehicle without interfering with the subframe suspension components of the vehicle.

[0047] For example, the flow guide body 1 can be made of alloy material, such as aluminum alloy or copper-aluminum alloy, so that it has sufficient structural strength to resist the impact of high-speed airflow without deformation or breakage. Alternatively, in other implementations, the flow guide body 1 can also be made of plastic, so that its overall structure is lighter and the material cost is lower.

[0048] Exemplarily, the vehicle tire in this embodiment may specifically refer to the front tire of the vehicle, or may refer to the rear tire of the vehicle.

[0049] The guide device of this embodiment is configured to include a guide body 1, and the guide body 1 includes a windward guide surface 11 and a leeward surface. The guide body 1 is arranged on the vehicle bottom guard plate 2 and the leeward surface is located in front of the vehicle tire. The windward guide surface 11 includes a first curved surface bent in a direction away from the vehicle tire and a second curved surface bent in a direction away from the vehicle bottom guard plate 2. This ensures that the airflow generated when the vehicle is driving will not directly impact the vehicle tire, but will impact the windward guide surface 11 of the guide device. Since the windward guide surface 11 protrudes in a direction away from the vehicle tire to form an arc surface, the airflow can flow to the outside of the vehicle tire after being guided by the windward guide surface 11, and will not impact the vehicle tire to form a high-pressure area, thereby effectively reducing wind resistance and improving the economy of the vehicle.

[0050] Reference Figure 1 to Figure 2 As shown, in some embodiments, the flow guide body 1 includes a flow guide front wall 3 and a flow guide side wall 5 connected to at least one side of the flow guide front wall 3 .

[0051] A surface of the guide front wall 3 facing away from the vehicle tire and at least a portion of a surface of the guide side wall 5 facing away from the vehicle tire together form a first curved surface.

[0052] Exemplarily, at least one side of the guide front wall 3 refers to at least one side of both sides of the guide front wall 3 along the width direction of the vehicle. For example, the guide side wall 5 can be provided as one, and the guide side wall 5 can be provided on any side of both sides of the guide front wall 3 along the width direction of the vehicle. For example, the guide side wall 5 can be provided as two, and the two guide side walls 5 can be provided on both sides of the guide front wall 3 along the width direction of the vehicle.

[0053] Furthermore, a side of the guide front wall 3 facing away from the vehicle tire and a side of the guide side wall 5 facing away from the vehicle tire can be arranged to jointly form a first curved surface, so that the high-speed airflow can continue to slide toward the guide side wall 5 after impacting the guide front wall 3, and then can slide out along the side of the guide side wall 5 facing away from the vehicle tire, so as to further enhance the diversion effect of the high-speed airflow, further reduce wind resistance, and enhance the economy of the vehicle.

[0054] Reference Figure 1 to Figure 2 As shown, in some embodiments, the front end of the guide side wall 5 is connected to one side of the guide front wall 3 , the guide side wall 5 extends in a direction away from the guide front wall 3 , and the guide side wall 5 protrudes in a direction away from the guide front wall 3 .

[0055] In specific implementation, the front end of the guide side wall 5 refers to the end of the guide side wall 5 facing the front of the vehicle, the front end of the guide side wall 5 is connected to one side of the guide front wall 3 (referring to the side of the guide front wall 3 along the width direction of the vehicle), and the guide side wall 5 extends in the direction away from the guide front wall 3, that is, extends in the direction towards the rear of the vehicle, and the guide side wall 5 protrudes in the direction away from the guide front wall 3, so that the side of the guide front wall 3 facing away from the vehicle tire and the side of the guide side wall 5 facing away from the vehicle tire are both arc surfaces protruding in the direction away from the vehicle tire, so that the high-speed airflow after being guided by the windward guide surface 11 of the guide front wall 3 can continue to be guided and slide along the side of the guide side wall 5 facing away from the vehicle tire, and then finally guide the high-speed airflow to the outside of the vehicle tire, so as to avoid the problem of high-speed airflow impacting the vehicle tire and causing increased wind resistance, thereby improving the vehicle economy.

[0056] Reference Figure 1 to Figure 2 As shown, in some embodiments, the junction between the front end of the guide side wall 5 and the guide front wall 3 is smoothly transitioned.

[0057] In a specific implementation, since the side of the guide front wall 3 facing away from the vehicle tire and at least part of the side of the guide side wall 5 facing away from the vehicle tire together form a first curved surface, in order to enhance the guiding effect of the windward guide surface 11 on the high-speed airflow, the joint between the guide front wall 3 and the guide side wall 5 can be arranged to have a smooth transition, so that the side of the guide front wall 3 facing away from the vehicle tire and at least part of the side of the guide side wall 5 facing away from the vehicle tire together form the windward guide surface 11, so as to achieve the guiding or diverting effect on the airflow.

[0058] Reference Figure 1 to Figure 2 As shown, in some embodiments, the guide body 1 further includes a guide top wall 4, which is disposed on the top of the guide front wall 3 and the guide side wall 5 and is connected to the guide front wall 3 and the guide side wall 5 respectively.

[0059] The side of the guide top wall 4 facing away from the vehicle tire jointly forms a second curved surface.

[0060] In specific implementation, a side of the guide front wall 3 facing away from the vehicle tire, at least a portion of the side of the guide side wall 5 facing away from the vehicle tire, and at least a portion of the side of the guide top wall 4 facing away from the vehicle tire can be arranged to jointly form a windward guide surface 11, so that after the high-speed airflow impacts the guide front wall 3, it can continue to slide toward the guide side wall 5 and the guide top wall 4, and then finally be discharged after flowing to the outside of the vehicle tire, so as to further enhance the guide effect of the high-speed airflow, further reduce wind resistance, and improve the economy of the vehicle.

[0061] Reference Figures 1 to 4 As shown, in some embodiments, the guide top wall 4 protrudes in a direction away from the vehicle bottom guard plate 2 to form a second curved surface, that is, it protrudes in a direction toward the roof of the vehicle to form an arc surface, so that the high-speed airflow flowing onto the guide top wall 4 can be diverted and guided along the side of the guide top wall 4 away from the vehicle bottom guard plate 2 and then discharged.

[0062] In addition, in this embodiment, the top wall 4 of the guide is convex in the direction away from the vehicle bottom guard plate 2 to form an arc surface, the side of the guide front wall 3 away from the vehicle tire is an arc surface formed in the direction away from the vehicle tire, and the side of the guide side wall 5 away from the vehicle tire is an arc surface formed in the direction away from the vehicle tire, so that the guide body 1 can finally be formed as follows Figure 1 The drum shape shown can make the outer surface of the entire guide body 1 play a role in guiding and diverting the high-speed airflow, so as to further reduce wind resistance and improve the economy of the vehicle.

[0063] In a specific implementation, a smooth transition can be set at the joint between the guide top wall 4 and the guide front wall 3, so that the side of the guide front wall 3 facing away from the vehicle tire and at least part of the side of the guide top wall 4 facing away from the vehicle tire together form a windward guide surface 11, so as to achieve the function of guiding or diverting the airflow, and is more conducive to achieving smooth flow of the airflow without causing the problem of high-pressure area.

[0064] In a specific implementation, a smooth transition can be set at the junction of the guide top wall 4 and the guide side wall 5, so that at least part of the side of the guide top wall 4 facing away from the vehicle tire and the side of the guide side wall 5 facing away from the vehicle tire together form a windward guide surface 11, so as to achieve the function of guiding or diverting the airflow, and is more conducive to achieving smooth flow of the airflow without causing the problem of high-pressure area.

[0065] In specific implementation, in some embodiments, the guide side wall 5, the guide top wall 4 and the guide front wall 3 are integrally formed into a structure with a smooth outer surface, such as a drum-shaped structure, to achieve smooth airflow guidance and diversion, and the integral forming of the guide side wall 5, the guide top wall 4 and the guide front wall 3 can also save manufacturing processes and improve the overall structural strength of the guide body 1. For example, the guide side wall 5, the guide top wall 4 and the guide front wall 3 can be integrally formed by plastic injection molding, or integrally formed by alloy stamping.

[0066] Alternatively, in other implementations, the guide side wall 5 , the guide top wall 4 and the guide front wall 3 may also be formed separately and then welded together, glued together or screwed together.

[0067] Reference Figures 1 to 4 As shown, the projections of the two side edges of the guide body 1 in the width direction of the vehicle are located outside the vehicle tires.

[0068] That is, in the width direction of the vehicle, both side edges of the guide body 1 can be flush with the outer sides of the vehicle tires in the width direction of the vehicle or protrude from the outer sides of the vehicle tires in the width direction of the vehicle, so that the guide body 1 can completely cover the vehicle tires in the width direction of the vehicle to further avoid high-speed airflow from impacting the vehicle tires.

[0069] In some embodiments, the dimension of the guide body 1 in the height direction of the vehicle is not greater than 60 mm; and / or, the dimension of the guide body 1 in the length direction of the vehicle is not greater than 60 mm; and / or, the dimension of the guide body 1 in the width direction of the vehicle is not greater than 120 mm.

[0070] In specific implementation, the specific dimensions of the guide body 1 can be: the dimension of the guide body 1 along the height direction of the vehicle can be 60 mm, the dimension along the length direction of the vehicle can be 60 mm, the dimension along the width direction of the vehicle can be 120 mm, and the distance between the lowest point of the guide body 1 and the ground can be 150 mm, so that the high-speed airflow can be smoothly guided by the guide body 1 to effectively reduce wind resistance, and it will not interfere with the assembly of other components of the vehicle.

[0071] Embodiment 2

[0072] Reference Figures 1 to 4 As shown, this embodiment further provides an underbody guard assembly, including a deflector and a vehicle underbody guard 2, wherein the deflector is arranged on at least one side of the vehicle underbody guard 2 along the width direction of the vehicle.

[0073] The at least one side herein refers to one side or two opposite sides of the vehicle underbody guard 2 in the width direction of the vehicle.

[0074] The specific structure and implementation principle of the guide device in this embodiment are the same as the structure of the guide device provided in Example 1, and can bring the same or similar technical effects, which will not be described one by one here, and the details can be referred to the description of Example 1.

[0075] Reference Figures 1 to 4 As shown, there are two guide devices, which are arranged on both sides of the vehicle bottom guard plate 2, and one guide device corresponds to one vehicle tire, so that one guide device can be used to protect one vehicle tire from airflow impact, so as to avoid the problem of increased wind resistance on the vehicle tire caused by high-speed airflow impact.

[0076] When implementing it, refer to Figure 3 and Figure 4 As shown, there are two guide devices and they are arranged on both sides of the vehicle bottom guard plate 2 along the width direction of the vehicle. At this time, the guide device can be specifically arranged at one end of the vehicle bottom guard plate 2 facing the front of the vehicle, so that the guide device can be arranged farther away from the vehicle tires to avoid assembly interference with the vehicle tires.

[0077] Reference Figure 3 and Figure 4 As shown, in some embodiments, two guide devices can be symmetrically arranged on both sides of the vehicle bottom guard plate 2, so as to achieve balanced diversion or diversion of the high-speed airflow in front of the two vehicle tires of the vehicle, so that the wind resistance on the left and right sides of the vehicle is more balanced, so as to improve the safety performance of the vehicle.

[0078] Reference Figures 1 to 4As shown, in some embodiments, the connection structure between the guide body 1 and the vehicle bottom guard plate 2 can be specifically as follows: an extension ear 121 is provided on the side of the guide body 1 close to the vehicle bottom guard plate 2, a first connection hole 122 is provided on the extension ear 121, and a second connection hole is provided at a position corresponding to the first connection hole 122 on the vehicle bottom guard plate 2. The guide body 1 is reliably connected to the vehicle bottom guard plate 2 by means of a first fastener 6 passed through the first connection hole 122 and the second connection hole to prevent detachment.

[0079] Exemplarily, the guide body 1 on the left is taken as an example: an extension ear 121 is provided at the right end of the guide body 1, a first connecting hole 122 is provided on the extension ear 121, and a second connecting hole is provided at the left end of the vehicle bottom guard plate 2, so that a reliable connection between the guide body 1 on the left and the vehicle bottom guard plate 2 can be achieved through the cooperation of the first connecting hole 122 and the second connecting hole.

[0080] In addition, by providing the extension ear 121 and providing the first connection hole 122 on the extension ear 121, it is easier to achieve the connection between the guide body 1 and the vehicle bottom guard plate 2. Exemplarily, the extension ear 121 can be integrally formed with the guide body 1 to save manufacturing steps and improve the structural strength of the guide body 1; or, the extension ear 121 can be separately formed from the guide body 1 and then welded together.

[0081] For example, the first connection hole 122 and the second connection hole can both be threaded holes, and the first fastener 6 can be a bolt or a screw that matches the threaded hole. Alternatively, the first connection hole 122 and the second connection hole can both be smooth holes, and the first fastener 6 can be a fastening pin that matches the smooth hole.

[0082] In addition, a plurality of first connection holes 122 may be provided, and the plurality of first connection holes 122 are spaced apart along the outer edge of the air guide body 1. A plurality of second connection holes may also be provided, and the plurality of second connection holes and the plurality of first connection holes 122 correspond one-to-one, so that the connection reliability between the air guide body 1 and the vehicle bottom guard plate 2 may be further improved through the cooperation of the plurality of first connection holes 122 and the plurality of second connection holes.

[0083] Embodiment 3

[0084] Reference Figures 1 to 4 As shown, this embodiment also provides a vehicle, including a deflector or an underbody guard plate assembly.

[0085] Reference Figures 1 to 4 As shown, in some embodiments, a mounting portion 7 is provided on the side of the guide body 1 facing away from the vehicle tire, and the mounting portion 7 is used to connect with the vehicle body, so as to reliably connect the guide body 1 to the vehicle body to avoid falling off and affecting normal use.

[0086] Exemplarily, a mounting portion 7 can be provided on the side of the guide body 1 close to the front of the vehicle. The mounting portion 7 can specifically be a third connecting hole, and a fourth connecting hole can be provided at a position on the vehicle body corresponding to the third connecting hole, so that a reliable connection between the guide body 1 and the vehicle body can be achieved by a second fastener inserted through the third connecting hole and the fourth connecting hole.

[0087] Exemplarily, the third connection hole and the fourth connection hole may both be threaded holes, and the second fastener may be a bolt or a screw adapted to the threaded hole. Alternatively, the third connection hole and the fourth connection hole may both be smooth holes, and the second fastener may be a fastening pin adapted to the smooth hole.

[0088] In addition, a plurality of third connection holes can be provided, and the plurality of third connection holes are arranged at intervals along the outer edge of the guide body 1. A plurality of fourth connection holes can also be provided, and the plurality of fourth connection holes correspond one-to-one to the plurality of third connection holes, so that the connection reliability between the guide body 1 and the vehicle body can be further improved through the cooperation of the plurality of third connection holes and the plurality of fourth connection holes.

[0089] The specific structure and implementation principle of the guide device in this embodiment are the same as the structure of the guide device provided in Example 1, and can bring the same or similar technical effects, which will not be described one by one here, and the details can be referred to the description of Example 1.

[0090] The specific structure and implementation principle of the bottom guard plate assembly in this embodiment are the same as the structure of the bottom guard plate assembly provided in Example 2, and can bring the same or similar technical effects, which will not be described one by one here, and the details can be referred to the description of Example 2.

[0091] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0092] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flow guide device, characterized in that: The flow guide body comprises a windward flow guide surface and a leeward surface located on the back side of the windward flow guide surface, the flow guide body is arranged on the bottom guard plate of the vehicle and the leeward surface is located in front of the vehicle tire; The windward deflector surface includes a first curved surface and a second curved surface connected to the edge of the first curved surface, at least a portion of the first curved surface is bent away from the vehicle tire, and the second curved surface is bent away from the vehicle bottom guard plate.

2. The flow guiding device according to claim 1, characterized in that: The flow guide body comprises a flow guide front wall and a flow guide side wall connected to at least one side of the flow guide front wall; A surface of the guide front wall facing away from the vehicle tire and a surface of the guide side wall facing away from the vehicle tire jointly form the first curved surface.

3. The flow guiding device according to claim 2, characterized in that: The front end of the guide side wall is connected to one side of the guide front wall, the guide side wall extends in a direction away from the guide front wall, and the guide side wall protrudes in a direction away from the guide front wall.

4. The flow guiding device according to claim 3, characterized in that: The front end of the guide side wall and the junction of the guide front wall are smoothly transitioned; And / or, there are two flow-guiding side walls, and the two flow-guiding side walls are respectively arranged on both sides of the flow-guiding front wall.

5. The flow guiding device according to claim 2, characterized in that: The flow guide body further includes a flow guide top wall, which is arranged on the top of the flow guide front wall and the flow guide side wall and is connected to the flow guide front wall and the flow guide side wall respectively; At least a portion of a surface of the guide top wall facing away from the vehicle tire forms the second curved surface.

6. The flow guiding device according to claim 5, characterized in that: The junction between the flow guide top wall and the flow guide front wall has a smooth transition; And / or, the junction between the flow guide top wall and the flow guide side wall has a smooth transition.

7. The flow guiding device according to claim 5, characterized in that: The flow-guiding side wall, the flow-guiding top wall and the flow-guiding front wall are integrally formed.

8. The flow guiding device according to any one of claims 1 to 7, characterized in that: The projections of the two side edges of the guide body in the width direction of the vehicle are located outside the tire of the vehicle.

9. The flow guiding device according to any one of claims 1 to 7, characterized in that: The dimension of the guide body in the height direction of the vehicle is not greater than 60 mm; and / or, the dimension of the guide body in the length direction of the vehicle is not greater than 60 mm; and / or, the dimension of the guide body in the width direction of the vehicle is not greater than 120 mm.

10. A bottom guard plate assembly, characterized in that: A vehicle bottom guard plate and a flow guide device as claimed in any one of claims 1 to 9; The deflector is disposed on at least one side of the vehicle underbody guard along a width direction of the vehicle.

11. The bottom guard plate assembly according to claim 10, characterized in that: There are two flow guide devices, which are arranged on both sides of the vehicle bottom guard plate, and one flow guide device corresponds to one vehicle tire.

12. The bottom guard plate assembly according to claim 10, characterized in that: The deflector body is detachably connected to the vehicle bottom guard plate.

13. The bottom guard plate assembly according to claim 12, characterized in that: An extension ear is provided on one side of the guide body close to the vehicle bottom guard plate, a first connecting hole is provided on the extension ear, and a second connecting hole is provided on the vehicle bottom guard plate. The guide body is connected to the vehicle bottom guard plate by a first fastener passing through the first connecting hole and the second connecting hole.

14. A vehicle, characterized in that: It comprises the deflector device as described in any one of claims 1 to 9 or the bottom guard plate assembly as described in any one of claims 10 to 13.

15. The vehicle according to claim 14, characterized in that A mounting portion is provided on a side of the guide body facing away from the vehicle tire, and the mounting portion is used to be connected to a vehicle body.

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