Flow guiding device, suspension assembly and vehicle

Abstract

The utility model relates to a flow guiding device, a suspension assembly and a vehicle, and the flow guiding device comprises a first flow guiding part and a second flow guiding part, the second flow guide part is provided with a second flow guide surface; the transition part is provided with a transition surface connected with the first flow guide surface and the second flow guide surface; the transition face is a smooth curved face and is tangent to at least part of the first flow guide face and at least part of the second flow guide face. The flow guide device, the suspension assembly and the vehicle have the beneficial effects that the transition face is combined with the first flow guide face and the second flow guide face to guide airflow to smoothly pass through so as to reduce the wind resistance of the vehicle.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and particularly to a flow guiding device, a suspension assembly and a vehicle. Background Art

[0002] The smoothness of the vehicle bottom is an important factor affecting the wind resistance. At present, for some protruding components of the vehicle, such as the rear suspension, it is in a bare state or only covered with a simple guard plate, and is severely impacted by the airflow, resulting in an increase in the wind resistance of the vehicle. Summary of the Utility Model

[0003] An embodiment of this application provides a flow guiding device to reduce the wind resistance of the vehicle and at least partially solve the above technical problems.

[0004] To achieve the above object, according to the first aspect of this application, a flow guiding device is provided, which includes:

[0005] A first flow guiding part with a first flow guiding surface;

[0006] A second flow guiding part with a second flow guiding surface;

[0007] A transition part with a transition surface connected to the first flow guiding surface and the second flow guiding surface;

[0008] Wherein, the transition surface is a smooth curved surface and is tangent to at least part of the first flow guiding surface and at least part of the second flow guiding surface respectively. <>

[0009] Optionally, the included angle between at least part of the first flow guiding surface and at least part of the second flow guiding surface is an obtuse angle.

[0010] Optionally, the value range of the included angle is from 110° to 180°.

[0011] Optionally, the first flow guiding surface and / or the second flow guiding surface is constructed as an arc surface.

[0012] Optionally, the first flow guiding surface and / or the second flow guiding surface extends along circular arc trajectories with multiple different radii.

[0013] Optionally, the second flow guiding part has:

[0014] A windward boundary connected to the transition part;

[0015] A leeward boundary formed on the side of the second flow guiding part away from the transition part;

[0016] Wherein, the second flow guiding surface is located between the windward boundary and the leeward boundary, and the windward boundary and the leeward boundary are at different positions in the first direction.

[0017] Optionally, the first flow guiding surface has a first extension component in the first direction, and the second flow guiding surface has a third extension component in the first direction; the third extension component is greater than the first extension component.

[0018] Optionally, the first flow guiding surface has a second extension component in the second direction, and the second flow guiding surface has a fourth extension component in the second direction; the fourth extension component is greater than the second extension component.

[0019] Optionally, the thickness of the first flow guiding portion ranges from 1 mm to 5 mm.

[0020] Optionally, the thickness of the second flow guiding portion ranges from 1 mm to 5 mm.

[0021] Optionally, the second flow guiding portion has:

[0022] A docking wall surface for coupling to a vehicle.

[0023] Optionally, the docking wall surface is located on a side of the second flow guiding portion away from the transition portion.

[0024] Optionally, the docking wall surface includes:

[0025] A plurality of wall surface units for respectively coupling to different regions of the vehicle;

[0026] Wherein, the contours of adjacent wall surface units are smoothly transitioned.

[0027] Optionally, the flow guiding device further has:

[0028] A fixing portion for setting the flow guiding device on a vehicle.

[0029] Optionally, at least a part of the fixing portion is connected to the docking wall surface.

[0030] Optionally, a plurality of the fixing portions are arranged at intervals along the extension trajectory of the docking wall surface.

[0031] Optionally, the fixing portion is configured to have a snap structure.

[0032] Optionally, the flow guiding device further includes:

[0033] A reinforcing rib extending from the first flow guiding portion to the second flow guiding portion;

[0034] Wherein, the reinforcing rib is arranged on an inner side surface of the flow guiding device, and the inner side surface of the flow guiding device is oppositely arranged with the first flow guiding surface and the second flow guiding surface.

[0035] Optionally, the sides of the reinforcing rib away from the first flow guiding surface and the second flow guiding surface are respectively configured to be arc-shaped.

[0036] Optionally, the second flow guiding portion has:

[0037] Leakage holes, which are arranged through the second flow guiding portion.

[0038] Optionally, the opening area of the leakage holes ranges from 200 mm 2 to 453 mm 2 .

[0039] According to a second aspect of the present application, a suspension assembly is provided, including the flow guiding device as described above.

[0040] Optionally, the suspension assembly includes:

[0041] A rear suspension arm;

[0042] The flow guiding device has:

[0043] A leeward boundary, formed on a side of the second flow guiding portion away from the transition portion;

[0044] Wherein, a limit position of the leeward boundary in a first direction is the same as a limit position of the rear suspension arm in the first direction.

[0045] Optionally, the rear suspension arm has:

[0046] A mating wall surface, and the flow guiding device covers the mating wall surface;

[0047] The flow guiding device has:

[0048] A docking wall surface and the mating wall surface have the same extension trajectory in a third direction, so that the docking wall surface fits with the mating wall surface.

[0049] According to a third aspect of the present application, a vehicle is further provided, including the flow guiding device as described above or the suspension assembly as described above.

[0050] The beneficial effect of the present application is that: a flow guiding device, a suspension assembly and a vehicle are provided, which guide air flow smoothly through the combination of a transition surface with a first flow guiding surface and a second flow guiding surface to reduce the wind resistance of the vehicle.

[0051] More specifically, some embodiments of the present application may produce the following specific beneficial effects:

[0052] By covering the protruding parts of the vehicle with the first air guiding surface and the second air guiding surface, it is possible to prevent the airflow from directly acting on the protruding parts of the vehicle. Moreover, the first air guiding surface and the second air guiding surface can reasonably guide the airflow to smoothly pass through the area where the protruding parts of the vehicle are located, thereby reducing the wind resistance of the vehicle. At the same time, a transition surface connected to the first air guiding surface and the second air guiding surface is provided, enabling the airflow to flow closely along the air guiding device, effectively guiding the airflow from the first air guiding surface to the second air guiding surface, and further reducing the wind resistance of the vehicle.

[0053] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. Brief Description of the Drawings

[0054] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0055] In order to more comprehensively understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, where the same reference numerals in the following description represent the same parts.

[0056] Figure 1 is a schematic diagram of the overall structure of the air guiding device provided in the exemplary embodiment of the present application;

[0057] Figure 2 is a top view of the air guiding device provided in the exemplary embodiment of the present application;

[0058] Figure 3 is a sectional view of the air guiding device provided in the exemplary embodiment of the present application;

[0059] Figure 4 is a front view of the air guiding device provided in the exemplary embodiment of the present application;

[0060] Figure 5 is a side view of the air guiding device provided in the exemplary embodiment of the present application;

[0061] Figure 6 is a schematic diagram of the overall structure of the suspension assembly provided in the exemplary embodiment of the present application;

[0062] Figure 7 is a schematic diagram of the overall structure of the vehicle provided in the exemplary embodiment of the present application.

[0063] Description of the Reference Numerals:

[0064] 100, air guiding device;

[0065] 110, First flow guiding part; 111, First flow guiding surface;

[0066] 120, Second flow guiding part; 121, Second flow guiding surface; 121a, Windward boundary; 121b, Leeward boundary; 122, Docking wall surface; 122a, Wall surface unit; 123, Leakage hole;

[0067] 130, Transition part; 131, Transition surface;

[0068] 140, Fixing part; 141, Through hole;

[0069] 150, Reinforcing rib;

[0070] Z, First direction; X, Second direction; Y, Third direction;

[0071] 10, Suspension assembly; 200, Rear suspension arm;

[0072] 1, Vehicle. Detailed implementation manners

[0073] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0074] According to the first aspect of the present application, referring to Figures 1 to 5 , the present application provides a flow guiding device 100 for covering a vehicle protruding component. It can be understood that the vehicle protruding component can be various components protruding along the height direction of the vehicle 1 at the bottom of the vehicle 1, such as, rear suspension, rear muffler, fuel tank, and battery pack, etc. The flow guiding device 100 can cover only the area of the vehicle protruding component that interacts with the airflow, or completely cover the vehicle protruding component.

[0075] The flow guiding device 100 includes: a first flow guiding part 110, a second flow guiding part 120, and a transition part 130.

[0076] The first flow guiding part 110 has a first flow guiding surface 111; the second flow guiding part 120 has a second flow guiding surface 121 different from the first flow guiding surface 111; the transition part 130 has a transition surface 131 connected to the first flow guiding surface 111 and the second flow guiding surface 121; the transition surface 131 is a smooth curved surface and is tangent to at least part of the first flow guiding surface 111 and at least part of the second flow guiding surface 121 respectively.

[0077] It can be understood that the first flow guiding surface 111 and the second flow guiding surface 121 can be surfaces that are in direct contact with the air flow, or can be the outer surfaces of the first flow guiding portion 110 and the second flow guiding portion 120. Here, the outer side refers to the side of the flow guiding device 100 that faces away from the protruding component of the vehicle. The first flow guiding surface 111 and the second flow guiding surface 121 can not only achieve the guiding of the air flow, but also play a role in shielding the protruding component of the vehicle.

[0078] Exemplarily, the transition surface 131 is located between the first flow guiding surface 111 and the second flow guiding surface 121.

[0079] When the air flow flows through the bottom of the vehicle 1, the air flow acts on the first flow guiding surface 111, transfers the position where the protruding component of the vehicle is directly impacted by the air flow, and guides the air flow to flow through in combination with the transition portion 130 and the second flow guiding surface 121, preventing the air flow from widely curling and separating around the protruding component of the vehicle, and at the same time avoiding the air flow directly acting on the protruding component of the vehicle, thereby reducing the resistance generated at the protruding component of the vehicle.

[0080] Through the above technical solution, by covering the protruding component of the vehicle with the first flow guiding surface 111 and the second flow guiding surface 121, it is possible to avoid the air flow directly acting on the protruding component of the vehicle, and moreover, the first flow guiding surface 111 and the second flow guiding surface 121 can reasonably guide the air flow to smoothly pass through the area where the protruding component of the vehicle is located, thereby reducing the wind resistance of the vehicle 1. At the same time, by providing the transition surface 131 that is connected to the first flow guiding surface 111 and the second flow guiding surface 121, the air flow can flow closely along the flow guiding device 100, effectively guiding the air flow from the first flow guiding surface 111 to the second flow guiding surface 121, further reducing the wind resistance of the vehicle 1.

[0081] In some specific embodiments of the present application, the protruding component of the vehicle can be the rear suspension swing arm 200. Since the rear suspension is in a region with a relatively complex geometric space and has poor smoothness, especially the position of the rear suspension swing arm 200 is relatively low and is severely impacted by the air flow, resulting in an increase in wind resistance. By installing the flow guiding device 100 to the rear suspension swing arm 200, it is possible to effectively guide the air flow to smoothly pass through the area where the rear suspension is located, inhibit the inward curling of the air flow at the bottom of the vehicle 1, reduce the flow separation of the air flow at the bottom of the vehicle 1, and at the same time play a role in protecting and shielding the protruding area of the rear suspension swing arm 200, alleviating the impact of the air flow on the rear suspension swing arm 200, and thereby reducing the wind resistance coefficient of the whole vehicle.

[0082] For the convenience of understanding the flow guiding device 100 of the present application, the following takes the protruding component of the vehicle as the rear suspension swing arm 200 as an example to further describe the flow guiding device 100.

[0083] In some embodiments, referring to Figure 3 , the included angle α between at least part of the first flow guiding surface 111 and at least part of the second flow guiding surface 121 is an obtuse angle.

[0084] It can be understood that the first flow guiding surface 111 has different first tangents at different positions, and the second flow guiding surface 121 also has different second tangents at different positions. The included angle α between the first flow guiding surface 111 and the second flow guiding surface 121 is the maximum included angle that can be formed by the first tangent and the second tangent.

[0085] Adopting such a scheme, by limiting the included angle α between the first flow guiding surface 111 and the second flow guiding surface 121 to be an obtuse angle, while the flow guiding device 100 shields the entire rear swing arm 200, it can reduce the positive pressure area where the flow guiding device 100 is directly impacted by the airflow and reduce the resistance of the flow guiding device 100 to the airflow.

[0086] In some embodiments, the value range of the included angle α is from 110° to 180°.

[0087] Adopting such a selection range of the included angle makes the included angle between the first flow guiding surface 111 and the second flow guiding surface 121 larger, improving the guiding effect on the airflow.

[0088] Optionally, the included angle α can be at least one of 110° to 120°, 120° to 130°, 130° to 140°, 150° to 160°, 160° to 170°, 170° to 180°.

[0089] As a preferred scheme, the value range of the included angle between the first flow guiding surface 111 and the second flow guiding surface 121 is from 120° to 150°. Adopting such a selection of the included angle can balance the shielding effect and the air resistance of the flow guiding device 100 itself.

[0090] In some embodiments, referring to Figures 1 to 5 , the first flow guiding surface 111 and / or the second flow guiding surface 121 is configured as an arc surface.

[0091] It can be understood that both the first flow guiding surface 111 and the second flow guiding surface 121 are configured as arc surfaces, or only the second flow guiding surface 121 is configured as an arc surface, while the first flow guiding surface 111 is an inclined plane.

[0092] Adopting such a scheme ensures that the airflow can smoothly pass through the first flow guiding surface 111 and the second flow guiding surface 121, reducing the air resistance of the flow guiding device 100.

[0093] As an optional scheme, the second flow guiding surface 121 is set as a circular arc, so that the airflow can closely flow along the second flow guiding part 120, greatly reducing the flow separation of the airflow.

[0094] In some embodiments, the first flow guiding surface 111 and / or the second flow guiding surface 121 extend along arc trajectories with multiple different radii. That is, in the flow direction of the air flow, at least one of the first flow guiding surface 111 and the second flow guiding surface 121 is formed by tangent connection of arc surfaces with multiple different radii. Thus, not only can the guiding effect on the air flow be improved, but also the structure of the rear trailing arm 200 can be adapted.

[0095] In some embodiments, referring to Figure 3 , the second flow guiding portion has: a windward boundary 121a and a leeward boundary 121b.

[0096] The windward boundary 121a is connected to the transition surface 131; the leeward boundary 121b is formed on the side of the second flow guiding portion 120 away from the transition portion 130. Among them, the second flow guiding surface 121 is located between the windward boundary 121a and the leeward boundary 121b, and the windward boundary 121a and the leeward boundary 121b are at different positions in the first direction Z; that is, the windward boundary 121a and the leeward boundary 121b have a height difference in the first direction Z, so as to effectively cover the rear trailing arm 200.

[0097] Here, the first direction Z indicating the up and down direction is only for the convenience of introducing the specific embodiments of the present application, and there is no absolute corresponding relationship between the first direction Z and the up and down direction. Similarly, the following second direction X and the front and back direction, and the third direction Y and the left and right direction also do not have an absolute corresponding relationship. And the first direction Z, the second direction X and the third direction Y of the present application are only for expressing the relative position relationship, and they only indicate the general orientation, rather than an absolute geometric relationship.

[0098] In some embodiments, referring to Figure 3 , the first flow guiding surface 111 has a first extension component L1 in the first direction Z, and the second flow guiding surface 121 has a third extension component L3 in the first direction Z. Among them, the third extension component L3 can be understood as the distance between the windward boundary 121a and the leeward boundary 121b in the first direction Z.

[0099] The third extension component is greater than the first extension component; that is, the extension distance of the second flow guiding surface 121 in the up and down direction is greater than the extension distance of the first flow guiding surface 111 in the up and down direction. Thus, the area of the first flow guiding surface 111 directly impacted by the air flow can be reduced.

[0100] In some embodiments, referring to Figure 3 , the first flow guiding surface 111 has a second extension component L2 in the second direction X, and the second flow guiding surface 121 has a fourth extension component L4 in the second direction X. Among them, the fourth extension component L4 can be understood as the distance between the windward boundary 121a and the leeward boundary 121b in the second direction X.

[0101] The fourth extension component is greater than the second extension component. That is, the extension distance of the second flow guiding surface 121 in the front-rear direction is greater than that of the first flow guiding surface 111 in the front-rear direction. Thus, the air flow can flow smoothly along the second flow guiding surface 121.

[0102] It should be noted that the first direction Z can be understood as the up-down direction of the vehicle 1, the second direction X can be understood as the front-rear direction of the vehicle 1, and the third direction Y can be understood as the left-right direction of the vehicle 1. That is, both the first flow guiding surface 111 and the second flow guiding surface 121 are inclined in the up-down direction and the front-rear direction. With such a scheme, both the first flow guiding surface 111 and the second flow guiding surface 121 have extension components in different directions, which can improve the guiding effect on the air flow while reducing the positive impact of the air flow.

[0103] In some embodiments, the thickness of the first flow guiding portion 110 ranges from 1 mm to 5 mm; the thickness of the second flow guiding portion 120 ranges from 1 mm to 5 mm.

[0104] It can be understood that the thickness of the first flow guiding portion 110 is the thickness in the normal direction of the first flow guiding surface 111, and the thickness of the second flow guiding portion 120 is the thickness in the normal direction of the second flow guiding surface 121. The first flow guiding portion 110 and the second flow guiding portion 120 can have the same thickness. At this time, the thickness of the transition portion 130 is also the same as that of the first flow guiding portion 110 and the second flow guiding portion 120. The first flow guiding portion 110 and the second flow guiding portion 120 can have different thicknesses. At this time, the thickness of the transition portion 130 changes incrementally or decrementally between the first flow guiding portion 110 and the second flow guiding portion 120 to form a smooth transition.

[0105] With such a thickness selection, the overall volume and weight of the flow guiding device 100 are small, and it will not significantly increase the weight of the vehicle 1, which is beneficial to the lightweight development of the vehicle 1. At the same time, the cost of the flow guiding device 100 can be reduced.

[0106] As a preferred scheme, the thickness of the first flow guiding portion 110 is 3 mm, and the thickness of the second flow guiding portion 120 is 3 mm. Thus, the structural strength and weight of the flow guiding device 100 can be balanced.

[0107] As an alternative scheme, the flow guiding device 100 is made of plastic material to further reduce the weight of the flow guiding device 100.

[0108] In some embodiments, referring to Figure 1 and Figure 2 , the second flow guiding portion 120 has: a docking wall surface 122. The docking wall surface 122 is used for bonding to the vehicle.

[0109] The "combination" here can be achieved through methods such as docking, lapping, and bonding that enable assembly.

[0110] Exemplarily, the docking wall surface 122 is docked with the protruding component of the vehicle. When the flow guiding device 100 is installed on the rear suspension arm 200, the docking wall surface 122 and the rear suspension arm 200 are flush in the up and down direction, which can well solve the problem of increased wind resistance caused by the too low rear suspension arm 200.

[0111] Adopting such a solution ensures that the overall height of the rear suspension arm 200 in the up and down direction remains unchanged after installing the flow guiding device 100, avoiding the adverse effect of increased windward area due to the addition of the flow guiding device 100.

[0112] As a specific solution, refer to Figure 1 and Figure 2 , the docking wall surface 122 is located on the side of the second flow guiding portion 120 away from the transition portion 130.

[0113] In some embodiments, refer to Figure 1 and Figure 2 , the docking wall surface 122 includes: a wall surface unit 122a.

[0114] A plurality of wall surface units 122a are respectively used to be combined with different areas of the vehicle. The contours of adjacent wall surface units 122a are smoothly transitioned, so that the overall docking wall surface 122 is a smooth curved surface.

[0115] It should be noted that the division of the wall surface unit 122a is for the convenience of understanding this application, and there is no actual boundary between adjacent wall surface units 122a.

[0116] Adopting such a solution, through the setting of a plurality of wall surface units 122a, the shape of each wall surface unit 122a is the same as the shape of the vehicle protruding component that it cooperates with, ensuring a flat and smooth fit between the flow guiding device 100 and the vehicle protruding component.

[0117] Thus, the flow guiding device 100 of this application can be adaptively installed by designing different shapes of the docking wall surface 122 according to different types of vehicle protruding components, and has good applicability.

[0118] Of course, the width of the wall surface unit 122a in the third direction Y can be reasonably selected according to the interference relationship between the vehicle protruding component and the surrounding components, ensuring that the flow guiding device 100 can cover the positive pressure area of the vehicle protruding component directly impacted by the airflow.

[0119] Correspondingly, the width and shape of the transition portion 130 in the third direction Y should also be adaptively designed according to the interference relationship with the surrounding components to increase the coverage area of the vehicle protruding component as much as possible.

[0120] In some embodiments, referring to Figure 1 and Figure 4 , the flow guiding device 100 further has: a fixing part 140. The fixing part 140 is connected to the second flow guiding part 120 and is used to arrange the flow guiding device 100 on the vehicle. Thus, through the arrangement of the fixing part 140, the flow guiding device 100 is tightly and firmly installed on the rear suspension arm 200.

[0121] Exemplarily, the fixing part 140 can be connected to the rear suspension arm 200 and move synchronously with the rear suspension arm 200 to achieve effective coverage during the movement of the rear suspension arm 200.

[0122] In some embodiments, referring to Figure 1 , Figure 2 and Figure 4 , at least part of the fixing part 140 is connected to the docking wall surface 122. That is, the fixing part 140 is as close as possible to the docking wall surface 122 to avoid the connection between the fixing part 140 and the rear suspension arm 200 from affecting the fitting effect between the docking wall surface 122 and the rear suspension arm 200.

[0123] In some embodiments, referring to Figure 1 and Figure 2 , a plurality of fixing parts 140 are arranged at intervals along the extension trajectory of the docking wall surface 122. Thus, in the extension direction of the docking wall surface 122, a multi-point installation method is adopted to provide the stability of the flow guiding device 100.

[0124] As a specific solution, the projection in the first direction Z is located inside the projection of the second flow guiding part 120 in the first direction Z. Thereby, it is avoided that the fixing part 140 protrudes from the flow guiding device 100 in the second direction X and affects the tight fitting between the docking wall surface 122 and the rear suspension arm 200.

[0125] In some embodiments, referring to Figure 1 and Figure 4 , the fixing part 140 is configured to have a buckle structure. Exemplarily, the buckle structure is a through hole 141 provided on the fixing part 140.

[0126] Correspondingly, the rear suspension arm 200 is provided with a locking structure that cooperates with the buckle structure. The specific structure of the buckle installation adopts the existing method, and the structure will not be elaborated here.

[0127] Adopting such a solution, connecting with the rear suspension arm 200 by using the buckle structure increases the flexibility of the structure of the flow guiding device 100, facilitates installation and disassembly, and provides convenience for the later maintenance of the vehicle 1.

[0128] In some embodiments, referring to Figure 1 and Figure 3, the flow guiding device 100 further includes: a reinforcing rib 150. The reinforcing rib 150 is disposed on the inner side surface of the flow guiding device 100. The inner side surface of the flow guiding device 100 is disposed opposite to the first flow guiding surface 111 and the second flow guiding surface 121. The reinforcing rib 150 extends from the first flow guiding portion 110 to the second flow guiding portion 120. By providing the reinforcing rib 150, the structural strength of the flow guiding device 100 can be improved.

[0129] Among them, in some embodiments, referring to Figure 1 and Figure 3 , the sides of the reinforcing rib 150 away from the first flow guiding surface 111 and the second flow guiding surface 121 are respectively configured as arc-shaped.

[0130] Adopting such a solution can not only enhance the structural strength of the flow guiding device 100, but also, through its arc-shaped structure, more effectively disperse stress to reduce deformation when bearing loads, thereby extending the service life.

[0131] In some embodiments, referring to Figure 1 and Figure 2 , the second flow guiding portion 120 has: a water leakage hole 123. The water leakage hole 123 is disposed through the second flow guiding portion 120. Adopting such a solution ensures that the accumulated water splashed onto the flow guiding device 100 when the vehicle 1 passes through a low-lying section can be discharged in time, preventing the durability of the swing arm guard plate structure from being reduced due to the increase in the overall weight caused by the accumulated water.

[0132] In some embodiments, the value range of the opening area of the water leakage hole 123 is 200 mm 2 to 453 mm 2 . Adopting such a setting of the opening area can ensure the drainage effect while avoiding the influence of the setting of the water leakage hole 123 on the guiding effect of the second flow guiding portion 120 on the air flow.

[0133] Exemplarily, the cross-sectional shape of the water leakage hole 123 is circular, and the value range of its radius is 8 mm to 12 mm. Preferably, the radius of the water leakage hole 123 is 10 mm.

[0134] Of course, the shape, radius and quantity of the water leakage hole 123 can be reasonably arranged according to the size of the second flow guiding portion 120.

[0135] According to the second aspect of the present application, referring to Figure 6 , a suspension assembly 10 is provided. The suspension assembly 10 includes the above-mentioned flow guiding device 100. The suspension assembly 10 has all the beneficial effects of the above-mentioned flow guiding device 100, which will not be elaborated herein again.

[0136] In some embodiments, referring to Figure 1 , Figure 3 and Figure 6, the suspension assembly 10 further includes a rear suspension arm 200, and the extreme position of the leeward boundary 121b in the first direction Z is the same as the extreme position of the rear suspension arm 200 in the first direction Z.

[0137] It can be understood that the first direction Z can be the up-down direction of the vehicle 1. In this case, the extreme position is the lowest point position in the up-down direction.

[0138] Adopting such a solution ensures that after adding the flow guiding device, the overall position of the whole formed by the flow guiding device and the rear suspension arm remains unchanged in the first direction Z, avoiding an increase in the windward area and thus an increase in wind resistance.

[0139] In some embodiments, referring to Figure 1 , Figure 2 and Figure 6 , the rear suspension arm 200 has a mating wall surface (not shown). It can be understood that the mating wall surface is a partial wall surface of the rear suspension arm 200 facing the oncoming flow side.

[0140] The flow guiding device 100 covers the mating wall surface; the docking wall surface 122 of the flow guiding device 100 and the mating wall surface have the same extension trajectory in the third direction Y, so that the docking wall surface 122 fits with the mating wall surface.

[0141] Adopting such a solution makes the shape of the docking wall surface 122 the same as that of the mating wall surface, ensuring a flat and smooth fit between the flow guiding device 100 and the rear suspension arm 200.

[0142] In some embodiments, the flow guiding device 100 is installed on the rear suspension arm 200 and moves synchronously with the rear suspension arm 200 to achieve effective coverage during the movement of the rear suspension arm 200.

[0143] According to the third aspect of the present application, referring to Figure 7 , a vehicle 1 is provided. The vehicle 1 includes the flow guiding device 100 or the suspension assembly 10 as described above. The vehicle 1 has all the beneficial effects of the above-mentioned flow guiding device 100 or suspension assembly 10, which will not be elaborated herein.

[0144] The vehicle 1 can be a fuel vehicle, a plug-in hybrid vehicle or a new energy vehicle, etc. The present application does not make specific limitations on this.

[0145] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "plural" means two or more, unless otherwise specifically defined.

[0146] In the above embodiments, the descriptions of each embodiment have their own focuses. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0147] Among the embodiments, implementation manners and related technical features of the present application, they can be combined and replaced with each other without conflict.

[0148] The above are only the preferred embodiments of the present application, and do not impose any form of limitation on the present application. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A flow guiding device (100), characterized in that: The flow guiding device (100) comprises: A first flow guide portion (110) having a first flow guide surface (111); A second flow guide portion (120) having a second flow guide surface (121); A transition portion (130) having a transition surface (131) connected to the first flow-guiding surface (111) and the second flow-guiding surface (121); The transition surface (131) is a smooth curved surface and is tangent to at least a portion of the first flow-guiding surface (111) and at least a portion of the second flow-guiding surface (121).

2. The flow guiding device (100) according to claim 1, characterized in that: An included angle between at least a portion of the first flow-guiding surface (111) and at least a portion of the second flow-guiding surface (121) is an obtuse angle.

3. The flow guiding device (100) according to claim 2, characterized in that: The angle ranges from 110° to 180°.

4. The flow guiding device (100) according to claim 1, characterized in that The first flow-guiding surface (111) and / or the second flow-guiding surface (121) are configured as arc-shaped surfaces.

5. The flow guiding device (100) according to claim 4, characterized in that: The first flow guiding surface (111) and / or the second flow guiding surface (121) extend along a plurality of circular arc trajectories with different radii.

6. The flow guiding device (100) according to claim 1, characterized in that The second flow guide portion (120) has: a windward boundary (121a) connected to the transition surface (131); a leeward boundary (121b) formed on a side of the second air guide portion (120) away from the transition portion (130); The second guide surface (121) is located between the windward boundary (121a) and the leeward boundary (121b), and the windward boundary (121a) and the leeward boundary (121b) are located at different positions in the first direction (Z).

7. The flow guiding device (100) according to claim 1, characterized in that The first guide surface (111) has a first extension component in the first direction (Z), and the second guide surface (121) has a third extension component in the first direction (Z); The third extension component is greater than the first extension component.

8. The flow guiding device (100) according to claim 1, characterized in that The first guide surface (111) has a second extension component in the second direction (X), and the second guide surface (121) has a fourth extension component in the second direction (X); The fourth extension component is greater than the second extension component.

9. The flow guiding device (100) according to any one of claims 1 to 8, characterized in that: The thickness of the first guide portion (110) ranges from 1 mm to 5 mm.

10. The flow guiding device (100) according to any one of claims 1 to 8, characterized in that: The thickness of the second guide portion (120) ranges from 1 mm to 5 mm.

11. The flow guiding device (100) according to any one of claims 1 to 8, characterized in that: The second flow guide portion (120) has: A docking wall (122) is provided for coupling to a vehicle.

12. The flow guiding device (100) according to claim 11, characterized in that: The docking wall surface (122) is located on a side of the second flow guide portion (120) away from the transition portion (130).

13. The flow guiding device (100) according to claim 11, characterized in that: The docking wall (122) includes: A plurality of wall units (122a) for respectively coupling to different areas of a vehicle; The contours of adjacent wall units (122a) transition smoothly.

14. The flow guiding device (100) according to claim 11, characterized in that The flow guiding device (100) further comprises: The fixing portion (140) is used to install the flow guide device (100) on a vehicle.

15. The flow guiding device (100) according to claim 14, characterized in that: At least a portion of the fixing portion (140) is connected to the docking wall surface (122).

16. The flow guiding device (100) according to claim 14, characterized in that The plurality of fixing portions (140) are arranged at intervals along the extension track of the docking wall surface (122).

17. The flow guiding device (100) according to claim 14, characterized in that The fixing portion (140) is configured to have a snap-fit structure.

18. The flow guiding device (100) according to any one of claims 1 to 8, characterized in that: The flow guiding device (100) further comprises: a reinforcing rib (150) extending from the first flow guide portion (110) to the second flow guide portion (120); The reinforcing rib (150) is arranged on the inner side surface of the flow guide device (100), and the inner side surface of the flow guide device (100) is arranged opposite to the first flow guide surface (111) and the second flow guide surface (121).

19. The flow guiding device (100) according to claim 18, characterized in that: The sides of the reinforcing rib (150) away from the first flow-guiding surface (111) and the second flow-guiding surface (121) are respectively constructed in an arc shape.

20. The flow guiding device (100) according to any one of claims 1 to 8, characterized in that: The second flow guide portion (120) has: A water leakage hole (123) is provided through the second flow guide portion (120).

21. The flow guiding device (100) according to claim 20, characterized in that: The opening area of the water leakage hole (123) is in the range of 200mm 2 Up to 453mm 2 .

22. A suspension assembly (10), characterized in that: It comprises the flow guiding device (100) according to any one of claims 1 to 21.

23. The suspension assembly (10) according to claim 22, characterized in that The suspension assembly (10) comprises: Rear suspension arm (200); The flow guiding device (100) comprises: a leeward boundary (121b) formed on a side of the second air guide portion (120) away from the transition portion (130); Wherein, the extreme position of the leeward boundary (121b) in the first direction (Z) is the same as the extreme position of the rear suspension arm (200) in the first direction (Z).

24. The suspension assembly (10) according to claim 23, characterized in that The rear suspension arm (200) has: A matching wall surface, the flow guide device (100) covers the matching wall surface; The flow guiding device (100) comprises: a docking wall surface (122) located on a side of the second flow guide portion (120) away from the transition portion (130); The docking wall surface (122) and the matching wall surface have the same extension track in the third direction (Y), so that the docking wall surface (122) and the matching wall surface are in contact with each other.

25. A vehicle (1), characterized in that It comprises the guide device (100) according to any one of claims 1 to 21 or the suspension assembly (10) according to any one of claims 22 to 24.

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