Flow guide device, noise elimination system and vehicle

Abstract

The invention relates to a flow guide device, a silencing system and a vehicle, the flow guide device comprises a flow guide plate main body, the flow guide plate main body is arranged on the bottom surface of a tail silencer of the vehicle, and the flow guide plate main body is arranged on the side, close to a vehicle head, of a rear bumper of the vehicle in the direction from the vehicle head to the vehicle tail of the vehicle. In the direction from the head of the vehicle to the tail of the vehicle, at least one face, deviating from the tail silencer, of the flow guide plate body is the flow guide face which is obliquely arranged in the direction deviating from the tail silencer, and the end, close to a rear bumper, of the flow guide face is lower than the bottom face of the rear bumper. Therefore, air flow exhausted by the tail silencer can flow along the flow guide face so as to be guided downwards, the phenomenon that the air flow directly flows backwards and then flows to a rear bumper located behind the tail silencer to cause turbulent flow can be avoided to a certain extent, wind resistance can be effectively reduced, and the service life of the tail silencer is prolonged. And the economical efficiency of the vehicle is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, and in particular to a flow guide device, a silencer system 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] However, there is usually a gap between the rear muffler and the rear bumper of a car. The airflow discharged through the rear muffler will flow disorderly along the gap, causing serious turbulence, which will increase wind resistance and affect 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, a silencer system and a vehicle.

[0005] In a first aspect, the present disclosure provides a guide device, including a guide plate body;

[0006] The deflector body is used to be arranged on the bottom surface of the rear muffler of the vehicle, and the deflector body is located on a side of the rear bumper of the vehicle close to the front of the vehicle;

[0007] At least one side of the deflector body facing away from the rear muffler forms a deflector surface. In the direction from the front to the rear of the vehicle, the deflector surface is inclined toward a direction away from the rear muffler, and an end of the deflector surface close to the rear bumper is lower than the bottom surface of the rear bumper.

[0008] In some embodiments, along the direction from the front to the rear of the vehicle, the deflector body includes a first deflector and a second deflector connected in sequence;

[0009] In the direction from the front to the rear of the vehicle, the first deflector is tilted toward the direction close to the rear muffler;

[0010] The thickness of the second deflector gradually increases in the direction from the front to the rear of the vehicle, and a side of the second deflector facing away from the rear muffler forms the deflector surface inclined toward a direction away from the rear muffler.

[0011] In some embodiments, the angle between the plane where the guide surface is located and the horizontal plane is not less than 10°.

[0012] In some embodiments, in the direction from the front to the rear of the vehicle, the length of the deflector body is not less than 90 mm, and there is a preset gap between the deflector body and the rear bumper.

[0013] In some embodiments, at least two reinforcement structures are disposed on the deflector body, and at least two of the reinforcement structures are spaced apart along the width direction of the vehicle.

[0014] In some embodiments, the reinforcement structure includes a reinforcement rib, the reinforcement rib is located on a side of the deflector body close to the tail muffler or on a side of the deflector body away from the tail muffler, and the reinforcement rib extends from the deflector body to the rear bumper;

[0015] And / or, the reinforcement structure includes a reinforcement protrusion structure, and a portion of the guide plate body protrudes toward a direction close to the tail muffler to form the reinforcement protrusion structure.

[0016] In some embodiments, the bottom surface of the tail muffler is a curved structure that bulges toward the direction close to the deflector body, and one end of the deflector body away from the rear bumper is in contact with the lowest point of the curved structure.

[0017] In some embodiments, the guide device further includes a bending structure located on a side of the guide plate body away from the tail muffler, and the bending structure and / or the guide plate body are connected to the tail muffler.

[0018] In some embodiments, the bending structure includes at least a first bending section and a second bending section, one end of the first bending section is connected to an end of the deflector body close to the rear bumper and is bent relative to the deflector body, one end of the second bending section is connected to the other end of the first bending section, and the second bending section is bent relative to the first bending section;

[0019] The second bending section and / or the guide plate body are connected to the tail muffler.

[0020] In some embodiments, a weight-reducing structure is provided on the first bending segment and / or the second bending segment;

[0021] And / or, the first bending section, the second bending section and the guide plate body are integrally formed.

[0022] In a second aspect, the present disclosure provides a muffler system, including a tail muffler and a flow guide device.

[0023] In a third aspect, the present disclosure provides a vehicle including a deflection device or a silencer system.

[0024] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0025] The present invention provides a deflector device, a muffler system and a vehicle. The deflector device includes a deflector body, and the deflector body is arranged on the bottom surface of the rear muffler of the vehicle, and the deflector body is arranged on the side of the rear bumper of the vehicle close to the front of the vehicle in the direction from the front to the rear of the vehicle. At least one side of the deflector body away from the rear muffler forms a deflector surface, and in the direction from the front to the rear of the vehicle, the deflector surface is inclined in the direction away from the rear muffler, and one end of the deflector surface close to the rear bumper is lower than the bottom surface of the rear bumper, so that the airflow discharged from the rear muffler can flow along the deflector surface to guide the airflow downward, avoiding the airflow discharged from the rear muffler from flowing disorderly in the gap between the rear muffler and the rear bumper to cause turbulence, and to a certain extent avoiding the airflow from flowing directly to the rear and then impacting the rear bumper located behind the rear muffler to cause turbulence, thereby effectively reducing wind resistance and improving the economy of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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.

[0027] 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.

[0028] Figure 1 The structure of the flow guide device according to the embodiment of the present disclosure is shown in FIG. Figure 1 ;

[0029] Figure 2 The structure of the flow guide device according to the embodiment of the present disclosure is shown in FIG. Figure 2 .

[0030] Reference numerals:

[0031] 1. Guide plate body; 11. Guide surface; 12. Reinforcement structure; 121. Reinforcement ribs; 122. Reinforcement protrusion structure; 13. First guide plate; 14. Second guide plate; 2. Bending structure; 21. First bending section; 22. Second bending section; 23. Weight reduction structure. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] Embodiment 1

[0035] Reference Figure 1 to Figure 2 As shown, this embodiment provides a guide device, including a guide plate body 1.

[0036] The deflector body 1 is used to be arranged on the bottom surface of the rear muffler of the vehicle, and in the direction from the front to the rear of the vehicle, the deflector body 1 is located on the side of the rear bumper of the vehicle close to the front of the vehicle.

[0037] At least one side of the deflector body 1 facing away from the rear muffler forms a deflector surface 11. In the direction from the front to the rear of the vehicle, the deflector surface 11 is inclined away from the rear muffler, and the end of the deflector surface 11 close to the rear bumper is lower than the bottom surface of the rear bumper.

[0038] In specific implementation, the deflector body 1 can be fitted on the bottom surface of the tail muffler, and the deflector body 1 and the tail muffler can be welded or screwed. In the direction from the front to the rear of the vehicle, the deflector body 1 is located on the side of the rear bumper of the vehicle close to the front of the vehicle, that is, in front of the rear bumper, and is used to guide the airflow to prevent the airflow from flowing upward along the tangent of the lower surface of the tail muffler due to the curved outer contour of the tail muffler after the airflow is discharged through the tail muffler, and then impacting the rear bumper to form turbulence.

[0039] Specifically, in the direction from the front to the rear of the vehicle, at least one side of the deflector body 1 that is away from the rear muffler is a deflector surface 11 that is inclined in the direction away from the rear muffler, that is, in the direction from the front to the rear of the vehicle, the deflector surface 11 is a downwardly inclined inclined surface, so that the airflow discharged from the rear muffler can flow along the downwardly inclined deflector surface 11 to guide the airflow downward (the flow path of the airflow refers to Figure 1As shown by the dotted arrow in the figure, the airflow discharged through the tail muffler is prevented from flowing disorderly in the gap between the tail muffler and the rear bumper to cause turbulence. Since the end of the guide surface 11 close to the rear bumper is lower than the bottom surface of the rear bumper, the airflow can be prevented from flowing directly to the rear and then impacting the rear bumper located behind the tail muffler to cause turbulence to a certain extent, thereby effectively reducing wind resistance and improving the economy of the vehicle.

[0040] The test found that by setting up the guide device to guide the gas discharged from the tail muffler, the wind resistance of the whole vehicle can be effectively reduced by 0.002 and the cruising range can be increased by 0.5 km.

[0041] For example, since the guide plate body 1 is used to guide the tail muffler, it is limited by the high temperature environment when the tail muffler is working, and the guide plate body 1 needs to be made of high temperature resistant materials, such as metal materials, such as copper or iron.

[0042] The deflector device of this embodiment includes a deflector body 1, and the deflector body 1 is arranged on the bottom surface of the rear muffler of the vehicle, and the deflector body 1 is arranged on the side of the rear bumper of the vehicle near the front of the vehicle in the direction from the front to the rear of the vehicle. In the direction from the front to the rear of the vehicle, at least one side of the deflector body 1 away from the rear muffler is inclined in the direction away from the rear muffler, so that the airflow discharged from the rear muffler can flow along the deflector surface 11 to guide the airflow downward, avoiding the airflow discharged from the rear muffler to flow disorderly in the gap between the rear muffler and the rear bumper to cause turbulence, and the end of the deflector surface 11 close to the rear bumper is lower than the bottom surface of the rear bumper, so that the airflow can be prevented from flowing directly to the rear and then impacting the rear bumper located behind the rear muffler to cause turbulence to a certain extent, thereby effectively reducing wind resistance and improving the economy of the vehicle.

[0043] Reference Figure 1 As shown, in some embodiments, along the direction from the front to the rear of the vehicle, the deflector body 1 includes a first deflector 13 and a second deflector 14 connected in sequence.

[0044] In the direction from the front to the rear of the vehicle, the first deflector 13 is tilted toward the direction close to the rear muffler. In the direction from the front to the rear of the vehicle, the thickness of the second deflector 14 gradually increases, and the side of the second deflector 14 away from the rear muffler forms a deflection surface 11 tilted toward the direction away from the rear muffler.

[0045] That is to say, in order to guide the gas discharged from the tail muffler downward, it is necessary to set the side of the second guide plate 14 away from the tail muffler to be a guide surface 11 inclined in the direction away from the tail muffler. To this end, only the side of the second guide plate 14 away from the tail muffler can be set to be a guide surface 11 inclined in the direction away from the tail muffler, that is, only the side of the second guide plate 14 close to the tail muffler is an inclined surface, and the second guide plate 14 itself may not be an inclined second guide plate 14. In this case, the thickness of the second guide plate 14 gradually increases in the direction from the front to the rear of the vehicle. Alternatively, the second guide plate 14 can also be set as an inclined plate that is inclined in the direction away from the tail muffler as a whole. In this case, the side of the second guide plate 14 away from the tail muffler also presents a guide surface 11 inclined in the direction away from the tail muffler.

[0046] In addition, the first deflector 13 connected to the side of the second deflector 14 away from the rear bumper can be tilted toward the direction close to the rear muffler, that is, in the direction from the front to the rear of the vehicle, the first deflector 13 is tilted upward to enhance the structural strength of the entire deflector body 1.

[0047] Reference Figure 1 As shown, in some embodiments, the angle between the plane where the guide surface 11 is located and the horizontal plane is not less than 10°. By reasonably setting the angle between the plane where the guide surface 11 is located and the horizontal plane, the airflow discharged from the tail muffler can flow along the guide surface 11 to guide the airflow downward, thereby avoiding to a certain extent the turbulence caused by the airflow flowing directly to the rear and then flowing to the rear bumper located behind the tail muffler, thereby effectively reducing wind resistance and improving the economy of the vehicle.

[0048] Exemplarily, the angle between the plane where the guide surface 11 is located and the horizontal plane may be 10°, or may be 11° or 12°.

[0049] Reference Figure 1 As shown, in some embodiments, in the direction from the front to the rear of the vehicle, the length of the deflector body 1 is not less than 90 mm and there is a preset gap between the deflector body 1 and the rear bumper. By reasonably setting the size of the deflector body 1 in the direction from the front to the rear of the vehicle, it is possible to avoid the problem that the deflector body 1 is too long and abuts against the rear bumper, causing the heat of the rear muffler to be transferred to the rear bumper through the deflector body 1 and causing damage to the rear bumper, and it is also possible to avoid the problem that the deflector body 1 is too short and causes a poor airflow diversion effect.

[0050] For example, in the direction from the front to the rear of the vehicle, the length of the deflector body 1 may be 90 mm, or 91 mm, or 92 mm.

[0051] Reference Figure 1 and Figure 2 As shown, in some embodiments, at least two reinforcement structures 12 are provided on the deflector body 1, and the at least two reinforcement structures 12 are spaced apart along the width direction of the vehicle, thereby effectively improving the structural strength of the entire deflector device and increasing its service life.

[0052] Reference Figure 1 and Figure 2 As shown, in some embodiments, the reinforcement structure 12 includes a reinforcement rib 121, and the reinforcement rib 121 is located on a side of the guide plate body 1 close to the tail muffler or on a side of the guide plate body 1 away from the tail muffler, so that the structural strength of the entire guide device can be improved by the reinforcement rib 121.

[0053] For example, the reinforcing rib 121 can extend from the front to the rear of the vehicle, and the reinforcing rib 121 can extend from the deflector body 1 to the rear bumper, so that the overall extension direction of the reinforcing rib 121 is consistent with the flow direction of the airflow, thereby ensuring that the airflow can flow smoothly, and there will be no problem of blocking the smooth flow of the airflow due to the extension direction of the reinforcing rib 121 being perpendicular to the flow direction of the airflow or having a certain angle. In addition, the reinforcing rib 121 can be set to multiple, and the multiple reinforcing ribs 121 can be arranged at intervals along the width direction of the vehicle, so that the structural strength of the entire deflector can be further effectively improved by multiple reinforcing ribs 121.

[0054] For example, the reinforcing ribs 121 can be formed integrally with the deflector body 1 to save manufacturing steps and improve the structural strength of the entire deflector body 1. Alternatively, the reinforcing ribs 121 can be formed separately from the deflector body 1 and then welded together.

[0055] Reference Figure 1 and Figure 2 As shown, in some embodiments, the reinforcement structure 12 includes a reinforcement protrusion structure 122, and a portion of the guide plate body 1 protrudes toward the direction close to the tail muffler to form the reinforcement protrusion structure 122, so that the structural strength of the entire guide device can be improved by the reinforcement protrusion structure 122.

[0056] Exemplarily, a plurality of reinforcing protrusion structures 122 may be provided, and the plurality of reinforcing protrusion structures 122 may be arranged at intervals along the width direction of the vehicle, so that the structural strength of the entire air guide device may be further effectively improved by the plurality of reinforcing protrusion structures 122 .

[0057] In addition, in this embodiment, reinforcing ribs 121 can be set only on the guide plate body 1, or reinforcing protrusion structures 122 can be set only on the guide plate body 1, or reinforcing ribs 121 and reinforcing protrusion structures 122 can be set on the guide plate body 1 at the same time, so as to more effectively improve the structural strength of the entire guide device.

[0058] In some embodiments, the bottom surface of the tail muffler is a curved structure that bulges toward the direction close to the deflector body 1, and the end of the deflector body 1 away from the rear bumper is in contact with the lowest point of the curved structure.

[0059] In specific implementation, the bottom surface of the tail muffler is a downwardly convex curved structure. By fitting the end of the deflector body 1 away from the rear bumper to the lowest point of the curved structure, it is more conducive to allowing the gas discharged through the tail muffler to flow smoothly along the guide surface 11 of the deflector body 1, so that the airflow flows downward under the guiding effect of the guide surface 11 of the deflector body 1, avoiding the airflow discharged through the tail muffler from flowing disorderly in the gap between the tail muffler and the rear bumper to cause turbulence, thereby effectively reducing wind resistance and improving the economy of the vehicle.

[0060] Reference Figure 1 and Figure 2 As shown, in some embodiments, the guide device further includes a bending structure 2 located on the side of the guide plate body 1 away from the tail muffler, and the bending structure 2 and / or the guide plate body 1 are connected to the tail muffler. The structural strength of the entire guide device can be further improved by providing the bending structure 2.

[0061] For example, when both the bending structure 2 and the guide plate body 1 are connected to the tail muffler, the connection strength and connection reliability between the guide device and the tail muffler are further improved. Alternatively, only the bending structure 2 may be connected to the tail muffler, or only the guide plate body 1 may be connected to the tail muffler.

[0062] Reference Figure 1 and Figure 2 As shown, in some embodiments, the bending structure 2 includes at least a first bending segment 21 and a second bending segment 22, one end of the first bending segment 21 is connected to one end of the deflector body 1 close to the rear bumper and is bent relative to the deflector body 1, one end of the second bending segment 22 is connected to the other end of the first bending segment 21, and the second bending segment 22 is bent relative to the first bending segment 21.

[0063] The second bending section 22 and / or the guide plate body 1 are connected to the tail muffler.

[0064] For example, when both the second bending section 22 and the deflector body 1 are connected to the tail muffler, the connection strength and connection reliability between the deflector device and the tail muffler are further improved. Alternatively, only the second bending section 22 may be connected to the tail muffler, or only the deflector body 1 may be connected to the tail muffler.

[0065] Reference Figure 2 As shown, in some embodiments, a weight-reducing structure 23 is provided on the first bending segment 21 and / or the second bending segment 22, so that a lightweight design of the entire flow guiding device can be achieved. For example, the weight-reducing structure 23 can be provided only on the first bending segment 21, or only on the second bending segment 22, or both on the first bending segment 21 and the second bending segment 22, so as to further reduce the weight of the entire flow guiding device and ensure that the entire flow guiding device has sufficient structural strength.

[0066] For example, the weight-reducing structure 23 may be a through-going weight-reducing groove, a plurality of weight-reducing grooves may be provided, and the plurality of weight-reducing grooves may be arranged at intervals along the width direction of the vehicle. Alternatively, the weight-reducing structure 23 may be a non-through-going hollowing hole.

[0067] In some embodiments, the first bending section 21 and the second bending section 22 may be integrally formed to save manufacturing steps and improve the structural strength of the entire bending structure 2 .

[0068] In some embodiments, the bending structure 2 and the guide plate body 1 may be integrally formed to save manufacturing steps and improve the structural strength of the entire guide device.

[0069] Embodiment 2

[0070] Reference Figure 1 to Figure 2 As shown, this embodiment also provides a muffler system, including a tail muffler and a flow guide device.

[0071] The muffler system of this embodiment is provided with a deflector body 1 on the bottom surface of the tail muffler, and the deflector body 1 is provided on the side of the rear bumper of the vehicle close to the front of the vehicle in the direction from the front to the rear of the vehicle. In the direction from the front to the rear of the vehicle, the deflector body 1 is provided with a deflector surface 11 which is inclined in the direction away from the tail muffler, so that the airflow discharged from the tail muffler can flow along the deflector surface 11 to guide the airflow downward, thereby avoiding the airflow discharged from the tail muffler from flowing disorderly in the gap between the tail muffler and the rear bumper and causing turbulence, and the end of the deflector surface 11 close to the rear bumper is lower than the rear bumper, which can avoid the airflow from flowing directly to the rear and then impacting the rear bumper behind the tail muffler to cause turbulence to a certain extent, thereby effectively reducing wind resistance and improving the economy of the vehicle.

[0072] 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.

[0073] Embodiment 3

[0074] Reference Figure 1 to Figure 2 As shown, this embodiment also provides a vehicle, including a guide device or a silencer system.

[0075] The vehicle of this embodiment is provided with a deflector body 1 on the bottom surface of the tail muffler, and the deflector body 1 is provided on the side of the rear bumper of the vehicle close to the front of the vehicle in the direction from the front to the rear of the vehicle. In the direction from the front to the rear of the vehicle, the deflector body 1 is provided with a deflector surface 11 which is inclined in the direction away from the tail muffler, so that the airflow discharged from the tail muffler can flow along the deflector surface 11 to guide the airflow downward, thereby avoiding the airflow discharged from the tail muffler from flowing disorderly in the gap between the tail muffler and the rear bumper to cause turbulence, and the end of the deflector surface 11 close to the rear bumper is lower than the rear bumper, which can avoid the airflow from flowing directly to the rear and then impacting the rear bumper located behind the tail muffler to cause turbulence to a certain extent, thereby effectively reducing wind resistance and improving the economy of the vehicle.

[0076] 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.

[0077] The specific structure and implementation principle of the silencer system in this embodiment are the same as the structure of the silencer system provided in Embodiment 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 Embodiment 2.

[0078] 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.

[0079] 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, It is characterized in that including a deflector body; The deflector body is used to be arranged on the bottom surface of the rear muffler of the vehicle, and the deflector body is located on a side of the rear bumper of the vehicle close to the front of the vehicle; At least one side of the deflector body facing away from the rear muffler forms a deflector surface. In the direction from the front to the rear of the vehicle, the deflector surface is inclined toward a direction away from the rear muffler, and an end of the deflector surface close to the rear bumper is lower than the bottom surface of the rear bumper.

2. The flow guiding device according to claim 1, It is characterized in that Along the direction from the front to the rear of the vehicle, the deflector body includes a first deflector and a second deflector connected in sequence; In the direction from the front to the rear of the vehicle, the first deflector is tilted toward the direction close to the rear muffler; The thickness of the second deflector gradually increases in the direction from the front to the rear of the vehicle, and a side of the second deflector facing away from the rear muffler forms the deflector surface inclined toward a direction away from the rear muffler.

3. The flow guiding device according to claim 2, It is characterized in that The angle between the guide surface and the horizontal plane is not less than 10°.

4. The flow guiding device according to claim 1, It is characterized in that In the direction from the front to the rear of the vehicle, the length of the deflector body is not less than 90 mm, and there is a preset gap between the deflector body and the rear bumper.

5. The flow guiding device according to claim 1, It is characterized in that At least two reinforcement structures are arranged on the deflector body, and the at least two reinforcement structures are arranged at intervals along the width direction of the vehicle.

6. The flow guiding device according to claim 5, It is characterized in that The reinforcement structure includes a reinforcement rib, the reinforcement rib is located on a side of the deflector body away from the tail muffler, and the reinforcement rib extends from the deflector body to the rear bumper; And / or, the reinforcement structure includes a reinforcement protrusion structure, and a portion of the guide plate body protrudes toward a direction close to the tail muffler to form the reinforcement protrusion structure.

7. The flow guiding device according to claim 1, It is characterized in that The bottom surface of the tail muffler is a curved surface structure that is convex toward the direction close to the deflector body, and one end of the deflector body away from the rear bumper is in contact with the lowest point of the curved surface structure.

8. The flow guiding device according to any one of claims 1 to 7, It is characterized in that The guide device further comprises a bending structure located on a side of the guide plate body away from the tail muffler, and the bending structure and / or the guide plate body are connected to the tail muffler.

9. The flow guiding device according to claim 8, It is characterized in that The bending structure at least includes a first bending section and a second bending section, one end of the first bending section is connected to one end of the deflector body close to the rear bumper and is bent relative to the deflector body, one end of the second bending section is connected to the other end of the first bending section, and the second bending section is bent and extended relative to the first bending section in a direction away from the deflector body; The second bending section and / or the guide plate body are connected to the tail muffler.

10. The flow guiding device according to claim 9, It is characterized in that A weight-reducing structure is provided on the first bending section and / or the second bending section; And / or, the first bending section, the second bending section and the guide plate body are integrally formed.

11. A soundproofing system, It is characterized in that It comprises a tail muffler and a flow guiding device as claimed in any one of claims 1 to 10.

12. A vehicle, It is characterized in that It comprises the flow guiding device as claimed in any one of claims 1 to 10 or comprises the sound insulation system as claimed in claim 11.

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