Pneumatic flow guide device and vehicle

Abstract

The invention relates to the technical field of vehicle production and manufacturing, in particular to a pneumatic flow guiding device and a vehicle. The first flow guide face of the first flow guide part guides airflow to obliquely flow on the upstream in the vehicle advancing process, part of the airflow can be separated from the pneumatic flow guide device towards the side away from the chassis under the guiding effect of the first flow guide face, and part of the airflow gradually flows towards the second flow guide face of the second flow guide part. The second flow guide face extends towards the side deviating from the chassis and can guide airflow to the side deviating from the chassis, so that the airflow is separated from the pneumatic flow guide device. Therefore, the airflow is guided to the side deviating from the chassis through the cooperation of the first flow guide face and the second flow guide face, so that the impact on tires is weakened, and the purposes of reducing the aerodynamic resistance when the whole vehicle runs and improving the endurance are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle production and manufacturing, and in particular to a pneumatic flow guide device and a vehicle. Background Art

[0002] With the intensification of the energy crisis and the popularization of new energy vehicles, the current vehicle drive system is at a technical bottleneck stage. Reducing the energy consumption of the drive system requires a long time and a large economic cost, and it is difficult to make a breakthrough in a short period of time. Therefore, it has become the current trend to reduce the aerodynamic resistance of the vehicle and improve the endurance. Summary of the invention

[0003] The purpose of the present application is to provide a pneumatic guide device and a vehicle.

[0004] The present application provides an aerodynamic guide device, which includes: a first guide portion, which is used to be connected to a chassis of a vehicle, the first guide portion having a first guide surface, which is arranged obliquely relative to the forward direction of the vehicle, the first guide surface is away from the chassis, and the first guide surface guides the airflow generated during the forward movement of the vehicle to flow obliquely; a second guide portion, which is used to be connected to the chassis, the second guide portion is located downstream of the first guide portion in the forward direction of the vehicle, the second guide portion has a second guide surface, the second guide surface is arranged at an angle to the first guide surface, and the second guide surface is extended to a side away from the chassis, and the second guide surface guides the airflow generated during the forward movement of the vehicle to flow to a side away from the chassis.

[0005] In an exemplary embodiment of the present application, the width of the first guide surface in a first direction gradually increases along the airflow direction, and the first direction is perpendicular to the airflow direction.

[0006] In an exemplary embodiment of the present application, the first guide portion has a third guide surface and a fourth guide surface, and the third guide surface and the fourth guide surface are located on both sides of the first guide surface in the first direction; the width of the third guide surface in the second direction gradually increases along the airflow direction, and the width of the fourth guide surface in the second direction gradually increases along the airflow direction, and the first direction, the second direction, and the airflow direction are perpendicular to each other.

[0007] In an exemplary embodiment of the present application, there are rounded corners between the first guide surface and the third guide surface, and between the first guide surface and the fourth guide surface.

[0008] In an exemplary embodiment of the present application, the first guide surface, the third guide surface, and the fourth guide surface cooperate to form a groove structure, the groove structure is connected to the second guide part at a notch facing the second guide part, and the groove structure is connected to the chassis at a notch facing the chassis.

[0009] In an exemplary embodiment of the present application, the first guide portion forms a leakage hole on the first guide surface, and the leakage hole is connected to the groove structure.

[0010] In an exemplary embodiment of the present application, the aerodynamic air guide device also includes a connecting portion, which includes a first connecting portion and a second connecting portion; the first connecting portion protrudes outward in a radial direction of the first air guide portion, the first connecting portion and the first air guide portion are arranged as an integral structure, and the first connecting portion is connected to the chassis; the second connecting portion protrudes outward in a radial direction of the second air guide portion, the second connecting portion and the second air guide portion are arranged as an integral structure, and the second connecting portion is connected to the chassis.

[0011] In an exemplary embodiment of the present application, the pneumatic guide device includes support ribs, and the support ribs are arranged between the second connecting portion and the second guide portion. The number of the support ribs is multiple, and the multiple support ribs are arranged at intervals.

[0012] In an exemplary embodiment of the present application, the first guide portion, the second guide portion, the connecting portion, and the supporting ribs are arranged as an integrated structure.

[0013] The present application also provides a vehicle, which includes a chassis and the aerodynamic guide device, wherein the first guide portion and the second guide portion of the aerodynamic guide device are both connected to the chassis.

[0014] The pneumatic guide device and vehicle of the present application have the following beneficial effects: the first guide surface of the first guide part guides the airflow to flow obliquely upstream during the vehicle's forward movement, and part of the airflow can be guided by the first guide surface to separate from the pneumatic guide device to the side away from the chassis, and part of the airflow gradually flows to the second guide surface of the second guide part, and the second guide surface is extended to the side away from the chassis, and can guide the airflow to the side away from the chassis, so that the airflow separates from the pneumatic guide device. Thus, the airflow is guided to the side away from the chassis through the cooperation of the first guide surface and the second guide surface, thereby reducing the impact on the tire, thereby achieving the purpose of reducing the aerodynamic resistance of the whole vehicle during driving and improving the endurance.

[0015] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is an axial schematic diagram of an aerodynamic flow guiding device according to an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the assembly of a pneumatic guide device and a chassis in an embodiment of the present invention;

[0020] Figure 3 is a schematic diagram of airflow distribution of a pneumatic flow guide device in an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram comparing the pressures of the tire and the swing arm before and after the pneumatic flow guide device is applied to the vehicle in an embodiment of the present invention;

[0022] Figure 5 is a front view schematic diagram of a pneumatic flow guide device in an embodiment of the present invention;

[0023] Figure 6 It is a rear view schematic diagram of a pneumatic flow guide device in an embodiment of the present invention.

[0024] Description of reference numerals:

[0025] 1. chassis; 2. pneumatic guide device; 3. tire; 4. swing arm; 10. first guide part; 11. first guide surface; 12. third guide surface; 13. fourth guide surface; 20. second guide part; 21. second guide surface; 30. groove structure; 40. leakage hole; 50. connection part; 51. first connection part; 52. second connection part; 60. support rib; X1, first direction; X2, second direction. DETAILED DESCRIPTION

[0026] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0027] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0028] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0029] It should be noted that the "multiple" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0030] With the intensification of the energy crisis and the popularization of new energy vehicles, the current vehicle drive system is at a technical bottleneck stage. Reducing the energy consumption of the drive system requires a long time and a large economic cost, and it is difficult to make a breakthrough in a short period of time. Therefore, it has become the current trend to reduce the aerodynamic resistance of the vehicle and improve the endurance.

[0031] Existing similar deflector devices mainly arrange a deflector in front of the tire, increase the shielding area of ​​the tire, and the curvature of the deflector to change the local airflow direction, so as to reduce the energy loss caused by airflow disturbance around the tire, thereby reducing the aerodynamic resistance of the whole vehicle during driving, so as to achieve the purpose of improving cruising range. However, this kind of deflector device, while guiding the airflow, the deflector itself is directly impacted by the airflow, there is an obvious positive pressure area, and there is a risk of reverse increase in aerodynamic resistance.

[0032] In order to solve the above technical problems, refer to Figure 1 and Figure 2As shown, the present application provides an aerodynamic guide device 2, which includes a first guide portion 10 and a second guide portion 20. The first guide portion 10 is used to connect with the chassis 1 of the vehicle, and the first guide portion 10 has a first guide surface 11, which is inclined relative to the forward direction of the vehicle, and the first guide surface 11 is away from the chassis 1. The first guide surface 11 guides the airflow generated during the forward movement of the vehicle to flow obliquely; the second guide portion 20 is used to connect with the chassis 1, and the second guide portion 20 is located downstream of the first guide portion 10 in the forward direction of the vehicle. The second guide portion 20 has a second guide surface 21, and the second guide surface 21 is arranged at an angle with the first guide surface 11, and the second guide surface 21 extends to a side away from the chassis 1, and the second guide surface 21 guides the airflow generated during the forward movement of the vehicle to flow to a side away from the chassis 1. The first guide surface 11 of the first guide portion 10 guides the airflow to flow obliquely upstream during the vehicle's forward movement. Part of the airflow can be separated from the pneumatic guide device 2 to the side away from the chassis 1 under the guidance of the first guide surface 11, and part of the airflow gradually flows to the second guide surface 21 of the second guide portion 20. The second guide surface 21 is extended to the side away from the chassis 1, and can guide the airflow to the side away from the chassis 1, so that the airflow is separated from the pneumatic guide device 2. Therefore, the airflow is guided to the side away from the chassis 1 through the cooperation of the first guide surface 11 and the second guide surface 21, thereby reducing the impact on the tire 3, thereby achieving the purpose of reducing the aerodynamic resistance of the whole vehicle during driving and improving the endurance.

[0033] In some embodiments, reference Figure 2 As shown, Figure 2 A front wheel tire 3, a pneumatic guide device and a chassis 1 of a vehicle are shown in FIG. Figure 2 The pneumatic guide device 2 is installed on the vehicle chassis 1, and the pneumatic guide device 2 is arranged between the front of the vehicle and the tire 3. The vehicle chassis 1 forms a mounting groove for mounting the wheel hub, and the tire 3 is sleeved on the wheel hub and arranged in the mounting groove. The pneumatic guide device 2 is installed in front of the mounting groove of the wheel hub, and can disperse the airflow when the vehicle is moving forward, reducing the impact of the airflow on the tire 3.

[0034] In some embodiments, reference Figure 2 As shown, the pneumatic guide device 2 in the present application is mainly arranged in front of the tire 3, and can also be arranged behind the tire 3. Being arranged behind the tire 3 can also reduce the impact of the airflow on the tire 3. However, since the speed of the vehicle is slower when it is moving backward, the impact on the tire 3 is smaller, so the pneumatic guide device 2 is generally not arranged behind the tire 3.

[0035] In some embodiments, reference Figure 1 and Figure 2As shown, the direction in which the vehicle travels forward is the front, the direction in which the vehicle travels backward is the rear, the airflow direction is the initial airflow direction, and does not include the airflow direction after being guided, and the initial airflow direction is opposite to the vehicle's forward direction. In the forward direction, the first guide surface 11 is located upstream of the second guide surface 21, and the second guide surface 21 is located downstream of the first guide surface 11.

[0036] In some embodiments, the inclination angle between the first guide surface 11 and the airflow direction is set according to actual needs, and the angle between the first guide surface 11 and the second guide surface 21 is set according to actual needs, and the airflow direction can be roughly considered to be the front and rear direction of the vehicle. Specifically, the angle between the first guide surface 11 and the airflow direction is between 45 degrees and 70 degrees, and the angle between the second guide surface 21 and the airflow direction is between 75 degrees and 120 degrees.

[0037] In some embodiments, reference Figure 2 and Figure 3 As shown, Figure 3 The tire 3 and the swing arm 4 are shown in the figure. When the vehicle is moving forward, the airflow enters from the front of the vehicle. Part of the airflow flows from the outside of the tire 3 along the front of the vehicle to the rear of the vehicle under the guidance of the first guide surface 11 and the second guide surface 21, and the other part of the airflow flows from the bottom of the vehicle chassis 1 along the front of the vehicle to the rear of the vehicle. Although part of the airflow flowing through the outside of the tire 3 will generate vortices under the rotation of the tire 3, part of the airflow flowing through the chassis 1 will flow to the side away from the chassis 1 under the guidance of the first guide surface 11 and the second guide surface 21, reducing the impact of the airflow and the suspension swing arm 4, and even part of the airflow flowing through the chassis 1 will not impact the suspension swing arm 4, thereby reducing the aerodynamic resistance of the airflow and the vehicle.

[0038] In some embodiments, reference Figure 4 As shown, the vertical axis is the forward direction of the vehicle, the horizontal axis is the left and right direction of the vehicle, the solid line is the pressure distribution curve before application, and the dotted line is the pressure distribution curve after application. Comparing the pressure distribution before and after application of the pneumatic guide device 2, it can be seen that within the tire range, the pressure at point A is the highest before application, and the pressure at points B and C gradually decreases; after application, the pressure at point D is the highest, and the pressure at points E and F gradually decreases, among which the pressure at point A is less than the pressure at point D, the pressure at point B is greater than the pressure at point E, and the pressure at point C is greater than the pressure at point F, so the pressure before application within the tire range is greater than the pressure after application. Within the swing arm range, the pressure is close to disappearing, and the pressure before application is significantly greater than the pressure after application.

[0039] In some embodiments, reference Figure 5As shown, the width of the first guide surface 11 in the first direction X1 gradually increases along the airflow direction, and the first direction X1 is perpendicular to the airflow direction of the vehicle. The first direction X1 is the left-right direction of the vehicle, and the width of the first guide surface 11 in the first direction X1 gradually increases along the airflow direction of the vehicle to form a structure that is narrow in front and wide in the back. Under such a design, the airflow is separated on the left and right sides of the first guide surface 11, and flows away from the left and right sides of the tire after leaving the guide device.

[0040] In some embodiments, reference Figure 1 and Figure 5 As shown, the first guide portion 10 has a third guide surface 12 and a fourth guide surface 13, and the third guide surface 12 and the fourth guide surface 13 are located on both sides of the first guide surface 11 in the first direction X1; the width of the third guide surface 12 in the second direction X2 gradually increases along the airflow direction, and the width of the fourth guide surface 13 in the second direction X2 gradually increases along the airflow direction of the vehicle, and the first direction X1, the second direction X2, and the airflow direction are perpendicular to each other. The first guide surface 11, the third guide surface 12, and the fourth guide surface 13 cooperate to form the first guide portion 10. Such a design can guide the airflow to the ground and the left and right sides of the tire through the first guide surface 11, the third guide surface 12, and the fourth guide surface 13. The cooperation of the first guide surface 11, the third guide surface 12, and the fourth guide surface 13 further reduces the aerodynamic resistance to the tire, and further reduces the energy loss of the vehicle.

[0041] In some embodiments, reference Figure 5 As shown, the third guide surface 12 has a first inclination angle with the vertical surface, and the fourth guide surface 13 has a second inclination angle with the vertical surface. The first inclination angle is greater than the second inclination angle, which can increase the flow angle of the airflow under the chassis and reduce the risk of the airflow impacting the swing arm.

[0042] In some embodiments, reference Figure 5 As shown, there are rounded corners between the first guide surface 11 and the third guide surface 12, and between the first guide surface 11 and the fourth guide surface 13. Such a design can reduce the noise of the guide surface, thereby improving the noise, vibration and harshness (NVH) performance of the vehicle.

[0043] In some embodiments, reference Figure 5 and Figure 6As shown, the first guide surface 11, the third guide surface 12, and the fourth guide surface 13 cooperate to form a groove structure 30, the groove structure 30 is connected to the second guide portion 20 at the groove opening facing the second guide portion 20, and the groove structure 30 is connected to the chassis at the groove opening facing the chassis. The groove structure 30 can reduce the weight of the pneumatic guide device 2, and the groove structure 30 is connected to the chassis at the groove opening facing the chassis, which can reduce the material used to close the groove. Such a design can not only reduce weight but also reduce manufacturing costs.

[0044] In some embodiments, reference Figure 5 and Figure 6 As shown, the first guide portion 10 forms a leakage hole 40 on the first guide surface 11, and the leakage hole 40 is connected to the groove structure 30. The leakage hole 40 solves the risk of water accumulation caused by the design of the groove structure 30. During the use of the vehicle, water from the chassis, swing arm and other structures may penetrate into the groove structure 30. The infiltrated water will increase the weight of the pneumatic guide device and may also cause the water to collide with the groove structure 30 to generate noise. The water in the groove structure 30 can be guided to the outside through the leakage hole 40.

[0045] In some embodiments, reference Figure 5 and Figure 6 As shown, the pneumatic guide device 2 also includes a connecting portion 50, and the connecting portion 50 includes a first connecting portion 51 and a second connecting portion 52; the first connecting portion 51 protrudes outward in the radial direction of the first guide portion 10, and the first connecting portion 51 and the first guide portion 10 are set as an integral structure, and the first connecting portion 51 is connected to the chassis; the second connecting portion 52 protrudes outward in the radial direction of the second guide portion 20, and the second connecting portion 52 and the second guide portion 20 are set as an integral structure, and the second connecting portion 52 is connected to the chassis. The first connecting portion 51 is used to connect the first guide portion 10 to the chassis, and the second connecting portion 52 is used to connect the second guide portion 20 to the chassis. The first connecting portion 51 and the second connecting portion 52 are provided with connecting holes, and the locking member passes through the connecting holes to connect the chassis, so as to fix the pneumatic guide device on the chassis. The number of connecting holes is set according to actual needs.

[0046] In some embodiments, reference Figure 5 and Figure 6 As shown, the pneumatic flow guide device 2 includes a support rib 60, which is disposed between the second connection portion 52 and the second flow guide portion 20. The number of the support rib 60 is multiple, and the multiple support ribs 60 are disposed at intervals. The second connection portion 52 extends outward along the radial direction of the second flow guide portion 20, and forms an L-shaped step structure with the second flow guide portion 20. The formation of such a step structure can reduce the weight of the pneumatic flow guide device 2, and the provision of the support rib 60 in the step structure can increase the structural strength of the second connection portion 52 and the second flow guide portion 20.

[0047] In some embodiments, reference Figure 5 and Figure 6 As shown, the first guide portion 10, the second guide portion 20, the connecting portion 50, and the supporting ribs 60 are configured as an integrated structure, and the integrated structure of multiple parts is formed simultaneously by injection molding and other processes, which can ensure structural strength and reduce manufacturing costs.

[0048] In the present application, the airflow is guided to the side away from the chassis 1 by the cooperation of the first guide surface 11 and the second guide surface 21, thereby reducing the impact on the tire 3. The width of the first guide surface 11 in the first direction X1 gradually increases along the forward direction of the vehicle to form a structure that is narrow in front and wide in the back. The airflow is separated on the left and right sides of the first guide surface 11, and flows away from the left and right sides of the tire 3 after leaving the guide device, effectively reducing the positive pressure area caused by the direct impact of the airflow on the second guide part 20. Through such a design, the aerodynamic resistance of the vehicle can be greatly reduced, thereby improving the endurance.

[0049] The present application also provides a vehicle, which includes a chassis 1 and an aerodynamic guide device 2 , wherein a first guide portion 10 and a second guide portion 20 of the aerodynamic guide device 2 are both connected to the chassis 1 .

[0050] In this application, unless otherwise clearly specified and limited, the terms "disposed (provided with)", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In the description of this specification, the description of reference terms such as "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0052] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. A pneumatic flow guide device, characterized in that: The pneumatic flow guiding device comprises: A first guide portion, used to be connected to the chassis of the vehicle, the first guide portion having a first guide surface, which is arranged obliquely relative to the forward direction of the vehicle, the first guide surface is away from the chassis, and the first guide surface guides the airflow generated during the forward movement of the vehicle to flow obliquely; A second guide portion is used to be connected to the chassis, the second guide portion is located downstream of the first guide portion in the forward direction of the vehicle, the second guide portion has a second guide surface, the second guide surface is arranged at an angle with the first guide surface, and the second guide surface extends toward a side away from the chassis, and the second guide surface guides the airflow generated during the forward movement of the vehicle to flow toward the side away from the chassis.

2. The pneumatic flow guiding device according to claim 1, characterized in that: The width of the first guide surface in a first direction gradually increases along the airflow direction, and the first direction is perpendicular to the airflow direction.

3. The pneumatic flow guiding device according to claim 1, characterized in that: The first guide portion has a third guide surface and a fourth guide surface, and the third guide surface and the fourth guide surface are located on both sides of the first guide surface in the first direction; the width of the third guide surface in the second direction gradually increases along the airflow direction, and the width of the fourth guide surface in the second direction gradually increases along the airflow direction, and the first direction, the second direction, and the airflow direction are perpendicular to each other.

4. The pneumatic flow guiding device according to claim 3, characterized in that: There are rounded corners between the first guide surface and the third guide surface, and between the first guide surface and the fourth guide surface.

5. The pneumatic flow guiding device according to claim 3, characterized in that: The first guide surface, the third guide surface, and the fourth guide surface cooperate to form a groove structure, the groove structure is connected to the second guide part at a notch facing the second guide part, and the groove structure is connected to the chassis at a notch facing the chassis.

6. The pneumatic flow guiding device according to claim 5, characterized in that: The first flow guide portion forms a liquid leakage hole on the first flow guide surface, and the liquid leakage hole is connected to the groove structure.

7. The pneumatic flow guiding device according to claim 1, characterized in that: The aerodynamic flow guide device also includes a connecting portion, which includes a first connecting portion and a second connecting portion; the first connecting portion protrudes outward in the radial direction of the first flow guide portion, the first connecting portion and the first flow guide portion are set as an integral structure, and the first connecting portion is connected to the chassis; the second connecting portion protrudes outward in the radial direction of the second flow guide portion, the second connecting portion and the second flow guide portion are set as an integral structure, and the second connecting portion is connected to the chassis.

8. The pneumatic flow guiding device according to claim 7, characterized in that: The pneumatic flow guiding device includes a supporting rib, wherein the supporting rib is arranged between the second connecting portion and the second flow guiding portion, and the number of the supporting ribs is multiple, and the multiple supporting ribs are arranged at intervals.

9. The pneumatic flow guiding device according to claim 8, characterized in that: The first guide portion, the second guide portion, the connecting portion, and the supporting ribs are arranged as an integrated structure.

10. A vehicle, characterized in that: The vehicle comprises a chassis and the aerodynamic guide device according to any one of claims 1 to 9, wherein the first guide portion and the second guide portion of the aerodynamic guide device are both connected to the chassis.

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