A tail fin and a vehicle

Abstract

The present invention discloses a tail wing and a vehicle, belonging to the technical field of vehicle tail wings. The tail wing includes a mounting shell, a telescopic wing, and a driving mechanism. The mounting shell is provided with a guiding cavity, and the cavity wall of the guiding cavity in the height direction is provided with a disturbing structure. The disturbing structure includes a guiding convex surface and a guiding concave surface that correspond to each other in the height direction; the telescopic wing is provided with a flow disturbing section and a guiding section, and the guiding section is movably inserted into the guiding cavity. Guide blocks are provided on both sides of the guiding section; the movable part of the driving mechanism acts on the guiding section to drive the guiding section to move in the guiding cavity along the telescopic direction; the profiles of the guiding convex surface and the guiding concave surface match each other, so that the dimensions of each part of the guiding cavity in the height direction along the telescopic direction are the same, and when the driving mechanism drives the guide block to move into contact with the disturbing structure, the telescopic wing swings upward or downward relative to the mounting shell. The tail wing provided by the present invention can reduce wind resistance, thereby reducing energy consumption; at the same time, the adjustable length of the tail wing can also improve the versatility of the tail wing.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle spoilers, and particularly relates to a spoiler and a vehicle. Background Art

[0002] An automotive spoiler, also called an automotive rear spoiler, is generally located at the rear of a vehicle. While achieving a styling effect, it serves as a spoiler to improve aerodynamic drag and thus reduce the energy consumption of the vehicle. Currently, there are mainly two structural forms of automotive spoilers on the market. The first type of spoiler is fixed and can only reduce aerodynamic drag by optimizing the shape. The second type is a retractable spoiler, which is mostly used in three-box sports cars (such as the Porsche Panamera) or hatchback sedans (such as the Changan UNI-V).

[0003] The aerodynamic drag reduction effects of the above two types of spoilers are limited, and there is still room for optimization. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a spoiler and a vehicle. The length and inclination angle of the spoiler are adjustable to match different driving speeds of the vehicle, so as to reduce aerodynamic drag and thus reduce energy consumption. At the same time, the adjustable length of the spoiler can also improve the versatility of the spoiler.

[0005] The technical solution of the present invention is as follows:

[0006] On the one hand, the present invention provides a spoiler, including:

[0007] An installation shell provided with a guiding cavity with an opening. At least one set of disturbance structures are provided on the cavity wall of the guiding cavity along the height direction. The disturbance structure includes a guiding convex surface and a guiding concave surface that are corresponding in the height direction and match in profile. The dimensions of each part of the guiding cavity along the telescopic direction are the same in the height direction;

[0008] A telescopic wing provided with a guiding section extending into the guiding cavity through the opening and a spoiler section located outside the installation shell. Guiding blocks are provided on both sides of the guiding section along the height direction;

[0009] A driving mechanism is arranged inside the installation shell and is used to drive the guiding section of the telescopic wing to move along the telescopic direction in the guiding cavity. When the driving mechanism drives the guiding block to move into contact with the disturbance structure, the telescopic wing swings upward or downward relative to the installation shell.

[0010] In some embodiments, the number of the disturbance structures is two or more, and two or more of the disturbance structures are spaced apart along the telescopic direction.

[0011] In some embodiments, more than two groups of the perturbation structures are evenly distributed along the telescopic direction, there are two guiding blocks, and the distance D between the two guiding blocks is set such that D≠nd, where d is the distance between two adjacent perturbation structures and n≥1.

[0012] In some embodiments, the profiles of the guiding convex surface and the guiding concave surface are both arc surfaces; alternatively, the profiles of the guiding convex surface, the guiding concave surface, and the guiding blocks are all arc surfaces.

[0013] In some embodiments, the guiding section includes a body and the guiding blocks protruding from the body, the body is in clearance fit with the guiding cavity, and the guiding blocks are located on two side surfaces of the body along the height direction.

[0014] In some embodiments, the guiding section is provided with guiding balls and / or horizontally arranged cylinders, the guiding balls and / or cylinders are rotatably connected to the body, and the guiding balls and / or cylinders partially protrude from two side surfaces of the body along the height direction to form the guiding blocks.

[0015] In some embodiments, the profiles of the guiding convex surface and the guiding concave surface are both arc cylindrical surfaces.

[0016] In some embodiments, the driving mechanism includes a power mechanism and a connecting rod assembly driven by the power mechanism, the power mechanism is located inside the mounting shell, and the execution end of the connecting rod assembly is connected to the guiding section.

[0017] In some embodiments, the tail wing further includes:

[0018] A controller, electrically connected to the power mechanism;

[0019] A pressure sensor, electrically connected to the controller, for detecting the wind pressure of the flow disturbance section.

[0020] In some embodiments, one of the guiding section and the mounting shell is provided with a locking hole, and the other is provided with a locking member. When the guiding section moves to a set position in the guiding cavity, the locking member extends into the locking hole.

[0021] In some embodiments, the mounting shell is provided with a liquid-passing hole that is through and used for draining liquid, and the height of the liquid-passing hole is lower than that of the driving mechanism.

[0022] On the other hand, the present application also provides a vehicle, including:

[0023] A vehicle body;

[0024] The aforementioned tail wing, and the mounting shell is connected to the vehicle body.

[0025] The beneficial effects of the present invention at least include:

[0026] A tail wing provided by the present invention includes a mounting shell, a telescopic wing, and a driving mechanism. The mounting shell is provided with a guiding cavity with an opening. At least one set of disturbing structures is provided on the cavity wall of the guiding cavity in the height direction. The disturbing structure includes a guiding convex surface and a guiding concave surface that correspond to each other in the height direction; the telescopic wing is provided with a connected flow disturbing section and a guiding section. The guiding section is movably inserted into the guiding cavity through the opening. Guide blocks are provided on both sides of the guiding section in the height direction. The flow disturbing section is located outside the mounting shell; the driving mechanism is arranged inside the mounting shell, and the movable part of the driving mechanism acts on the guiding section to drive the guiding section to move in the guiding cavity in the telescopic direction; wherein, the profiles of the guiding convex surface and the guiding concave surface match, so that the dimensions of each part of the guiding cavity in the height direction along the telescopic direction are the same, and when the driving mechanism drives the guide block to move into contact with the disturbing structure, the guiding section swings upward or downward relative to the mounting shell. During the driving process of the vehicle, the guiding section can move in the guiding cavity along the telescopic direction, so as to realize the position change of the flow disturbing section along the telescopic direction and the length change of the tail wing; when the guide block of the guiding section contacts the disturbing structure, the guiding section can swing upward or downward relative to the mounting hole, so as to drive the telescopic wing to swing upward or downward, realizing the adjustment of the inclination angle of the telescopic wing with respect to the horizontal direction; therefore, the adjustment of the length and inclination angle of the tail wing in the present application realizes the optimal matching of the tail wing length, inclination angle and the driving speed of the vehicle, ensures the minimum wind pressure on the telescopic wing, and achieves the purpose of reducing energy consumption. The adjustable length of the tail wing matches the styling requirements of different vehicle models such as hatchbacks or sedans, improving the versatility of the tail wing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 FIG. shows the structural schematic diagram of a tail wing in the related art.

[0028] Figure 2 FIG. shows the structural schematic diagram of the tail wing in Embodiment 1.

[0029] Figure 3 FIG. shows Figure 2 a partial enlarged view of the guiding cavity and the guiding section of the tail wing.

[0030] Figure 4 FIG. shows Figure 2 the structural schematic diagrams of the telescopic wing at two positions in the guiding cavity.

[0031] Figure 5 FIG. shows Figure 4 a partial enlarged view.

[0032] Figure 6 FIG. shows the assembly drawing of the driving mechanism, the mounting shell and the telescopic wing.

[0033] Figure 7 FIG. shows the assembly drawing of the locking member, the mounting shell and the telescopic wing in the unlocked state.

[0034] Figure 8 Shows the assembly drawing of the locking member, the mounting shell and the telescopic wing in the locked state.

[0035] Explanation of reference numerals:

[0036] 100 - Tail wing; 110 - Mounting shell, 111 - Guide cavity, 112 - Opening, 113 - Disturbance structure, 113a - Guide convex surface, 113b - Guide concave surface, 114 - Mounting cavity; 120 - Telescopic wing, 121 - Turbulence section, 122 - Guide section, 123 - Body, 124 - Guide block, 125 - Guide ball; 130 - Driving mechanism, 131 - Power mechanism, 132 - First connecting rod, 133 - Second connecting rod; 140 - Locking member; 200 - Vehicle body. Detailed implementation manners

[0037] In order to enable those skilled in the art in the technical field to which the present application belongs to more clearly understand the present application, the technical solution of the present application will be described in detail below with reference to the drawings and specific embodiments.

[0038] During the driving process of the vehicle, the fluid around the vehicle is air, and there is a relative motion between the vehicle and the air. At this time, the Reynolds number of the air is much larger than the critical Reynolds number. Therefore, the air flow outside the moving vehicle is treated as turbulent flow. When the fluid flows in a circular pipe, the Reynolds number is defined as Re = ud / v. Where u is the fluid velocity, v is the kinematic viscosity, and d is the diameter of the circular pipe. When Re < 2300, the pipe flow in the circular pipe is laminar flow; when Re ≥ 8000, the pipe flow in the circular pipe is turbulent flow; complex turbulent flow can be described by the unsteady continuity equation. The components of the velocity vector in the x, y, and z directions in the Cartesian coordinate system can be represented by u, v, and w, and their expressions are as follows: In the three directions of x, y, and z, the components can be represented by u, v, and w, and their expressions are as follows:

[0039]

[0040]

[0041]

[0042]

[0043] Among them, ρ - fluid density, Kg / m 3 ;

[0044] - Velocity vector, m / s

[0045] p - Pressure on the fluid microelement, Pa.

[0046] Based on this, substituting into the standard k-ε turbulence model, we can obtain:

[0047]

[0048]

[0049] In the formula:

[0050] G k ——Turbulent kinetic energy;

[0051] G b ——Turbulent kinetic energy generated by buoyancy;

[0052] Y M ——Fluctuations generated by transitional diffusion, generally occurring in compressible turbulence;

[0053] σ ε σ k —Turbulent Prandtl numbers appearing in the ε equation and K equation, σ k = 1, σ ε = 1.3;

[0054] S k 、S ε —Defined source terms. For incompressible fluids, S ε = 0, G b -0, Y M = 0, S k = 0;

[0055] μ t —Turbulent viscosity coefficient, whose expression is C μ —Empirical constant.

[0056] Summary: As can be seen from the above formula, G k 、G b are both related to the components u, v, and w of the velocity vector in the x, y, and z directions. Since the vehicle is symmetric about the Y0 plane, the velocity v can be ignored. For the pressure difference at the car wing, only v and w need to be considered, and v and w are related to the inclination angle and length of the wing. Here, the length refers to the dimension of the wing in the vehicle body length direction, and the inclination angle here is the angle between the wing and the horizontal direction. After the above analysis, the wind pressure analysis of the wing with different lengths and different inclination angles is carried out by means of numerical simulation. The shape of the test wing is shown in Figure 1 , and the test scheme is as shown in Table 1 below. The included angles are taken as 1°, 3°, 5°, 7°, and 9°, and the corresponding dimensions of the wing in the vehicle body length direction are 200 mm, 220 mm, 240 mm, 260 mm, and 300 mm respectively.

[0057] Table 1

[0058]

[0059] Table 2

[0060]

[0061] Through CFD simulation analysis of the above - mentioned scheme, the drag coefficient as shown in Table 2 is obtained. The smaller the drag coefficient, the smaller the wind resistance of the rear wing under this scheme. From the data in Table 2, it can be obtained that when the inclination angle is 5° and the dimension A of the rear wing in the vehicle body length direction is 240, the drag coefficient is the smallest; when the rear wing has different lengths, the inclination angles with the smallest drag coefficient are not the same. For example, when the rear wing length is 200, the inclination angles of 5° or 7° result in a relatively small drag coefficient; when the rear wing length is 220, the inclination angles of 1°, 3°, 5° or 9° result in a relatively small drag coefficient.

[0062] In addition, at different driving speeds of the vehicle, the optimal length and optimal inclination angle of the rear wing, that is, the rear wing length and rear wing inclination angle when the drag coefficient is the smallest, are also different.

[0063] Therefore, the length of the rear wing along the vehicle body direction and the angle between the rear wing and the horizontal direction are the most fundamental factors affecting the wind pressure, that is, the wind resistance value during vehicle driving. In order to enable different vehicle models to have rear wings with optimal lengths and optimal inclination angles at different driving speeds, the present application provides a rear wing and a vehicle. This rear wing is used to be installed on the vehicle body. Specifically, the rear wing can be installed on a sedan or a hatchback. The rear wing is telescopically arranged and can swing up and down to realize the adjustment of the rear wing length and inclination angle, which can ensure that the vehicle adopts the optimal rear wing length and rear wing inclination angle at different driving speeds, minimizing the drag coefficient of the vehicle and reducing energy consumption; and the telescopic arrangement of the rear wing enables the adjustment of the dimension of the rear wing along the vehicle body length direction, meeting the styling requirements of different vehicle models and improving the versatility of the rear wing.

[0064] Embodiment 1

[0065] The embodiment of the present application provides a rear wing. This rear wing is used to be installed at the rear of the vehicle body and is used for disturbing the flow during vehicle driving to reduce the wind resistance of the vehicle, thereby reducing energy consumption; the rear wing can be telescopically arranged along the vehicle body length direction to meet the styling requirements of different vehicle models such as hatchbacks and sedans, improving the versatility of the rear wing; at the same time, the rear wing can swing up and down and cooperate with the telescopic adjustment of the length, enabling the vehicle to have the minimum wind resistance at different driving speeds.

[0066] Please refer to Figure 2 、 Figure 3 and Figure 6, the fin 100 provided by the embodiment of the present application includes a mounting shell 110, a telescopic wing 120 and a driving mechanism 130. The mounting shell 110 is provided with a guiding cavity 111 with an opening 112. At least one set of disturbing structures 113 is provided on the cavity wall of the guiding cavity 111 in the height direction. The disturbing structure 113 includes a guiding convex surface 113a and a guiding concave surface 113b that correspond to each other in the height direction; the telescopic wing 120 is provided with a connected flow disturbing section 121 and a guiding section 122. The guiding section 122 is movably inserted into the guiding cavity 111 through the opening 112. Guide blocks 124 are provided on both sides of the guiding section 122 in the height direction. The flow disturbing section 121 is located outside the mounting shell 110; the driving mechanism 130 is arranged inside the mounting shell 110, and the movable part of the driving mechanism 130 acts on the guiding section 122 to drive the guiding section 122 to move in the telescopic direction in the guiding cavity 111; wherein, the profiles of the guiding convex surface 113a and the guiding concave surface 113b match each other, so that the dimensions of each part of the guiding cavity 111 in the height direction along the telescopic direction are the same, and when the driving mechanism 130 drives the guide block 124 to move into contact with the disturbing structure 113, the telescopic wing 120 swings upward or downward relative to the mounting shell 110.

[0067] The mounting shell 110 serves as a mounting structure for mounting the spoiler 100 on the vehicle body 200. The material of the mounting shell 110 can be plastic, which can be obtained by cavity blow molding or injection molding, and there is no specific limitation; the guiding cavity 111 of the mounting shell 110 can be formed by enclosing the outer wall of the mounting shell 110 or by enclosing the inner wall of the mounting shell 110. The guiding cavity 111 can extend along the length direction of the vehicle body 200, and the extending direction of the guiding cavity 111 can also have a certain angle with the length direction of the vehicle body 200, and the extending direction of the guiding cavity 111 can be adjusted according to the styling requirements and space. The shape of the guiding cavity 111 can be a regular cuboid, cube or horizontally arranged cylinder, or an irregular shape; the mounting shell 110 is provided with an opening 112 communicating with the guiding cavity 111, and the spoiler section 121 extends into the guiding cavity 111 movably through the opening 112. The spoiler section 121 and the guiding section 122 can be an integral structure or a split structure; when the spoiler section 121 and the guiding section 122 are an integral structure, the telescopic wing 120 can be obtained by integral cavity blow molding or injection molding, and when the spoiler section 121 and the guiding section 122 are a split structure, they can be obtained by cavity blow molding or injection molding respectively, and then the spoiler section 121 and the guiding section 122 are connected by detachable connection means such as bolt connection or snap connection. The telescopic direction of the guiding section 122 in the guiding cavity 111 can be along the length direction of the vehicle body 200. Of course, the telescopic direction can also have a certain angle with the length direction of the vehicle body 200. The disturbance structure 113 includes a guiding convex surface 113a and a guiding concave surface 113b corresponding to each other in the height direction. Specifically, the guiding convex surface 113a can be located on the upper cavity wall in the height direction of the guiding cavity 111, and the guiding concave surface 113b is located on the lower cavity wall in the height direction of the guiding cavity 111. Of course, it can also be the other way around, that is, the guiding convex surface 113a is located on the lower cavity wall in the height direction of the guiding cavity 111, and the guiding concave surface 113b is located on the lower cavity wall in the height direction of the guiding cavity 111. During the vehicle driving process, the guiding section 122 can move in the guiding cavity 111 along the telescopic direction, so as to realize the position change of the spoiler section 121 along the telescopic direction and realize the length change of the spoiler 100; when the guiding block 124 of the guiding section 122 contacts the disturbance structure 113, the guiding section 122 can swing upward or downward relative to the mounting hole, so as to drive the telescopic wing 120 to swing upward or downward and realize the adjustment of the angle between the telescopic wing 120 and the horizontal direction; therefore, in the present application, the adjustment of the length and inclination angle of the spoiler 100 can realize the optimal matching of the length, inclination angle of the spoiler 100 and the driving speed of the vehicle, ensure the minimum wind pressure of the telescopic wing 120, and achieve the purpose of reducing energy consumption. The adjustable length of the spoiler 100 matches the styling requirements of different vehicle models such as hatchbacks or sedans, and improves the versatility of the spoiler 100.

[0068] Please refer to Figure 3, in some embodiments, the number of the perturbation structures 113 is more than two groups, and the perturbation structures 113 in more than two groups are distributed at intervals along the telescopic direction. The perturbation structures 113 in more than two groups enable the angle of the telescopic wing to be adjustable at different telescopic lengths. The number of the perturbation structures 113 determines the number of times the spoiler section 121 can swing upward. That is to say, the more the number of the perturbation structures 113, the higher the matching degree between the adjustment effect of the telescopic wing 120 and the vehicle speed, and the closer the drag coefficient of the adjusted spoiler section 121 is to the minimum value. For example, the telescopic range of the guiding section 122 is fixed, for example, the telescopic range is 10 cm. Two groups of perturbation structures 113 are arranged within this determined telescopic range, and the distance between the two groups of perturbation structures 113 is 5 cm. Then, the guiding block 124 needs to move 5 cm from the first swing to the next swing; if five groups of perturbation structures 113 are arranged within this determined telescopic range, and the distance between the two groups of perturbation structures 113 is 1.5 cm, then the guiding block 124 can swing upward or downward once every 1.5 cm after the first swing.

[0069] Please continue to refer to Figures 3 to 5, in some embodiments, more than two sets of perturbation structures 113 are evenly distributed along the telescopic direction. There are two guiding blocks 124, and the distance D between the two guiding blocks 124 is set such that D≠nd, where d is the distance between two adjacent perturbation structures 113, n≥1, and n is a positive integer. By setting two guiding blocks 124, the telescopic wing 120 is more stable during the movement of the guiding section 122 within the guiding cavity 111. The distance between the two guiding blocks 124 refers to the distance between the center points of the two guiding blocks 124, and the distance between two adjacent perturbation structures 113 refers to the distance between the center points of two adjacent perturbation structures 113. When the telescopic wing 120 swings upward or downward relative to the mounting shell 110, one of the guiding blocks 124 serves as a fulcrum, and the other guiding block 124 fluctuates along with the shape of the guiding convex surface 113a or the guiding concave surface 113b, thereby realizing the adjustment of the angle between the spoiler section 121 and the horizontal direction. For example, if the distance between the two guiding blocks 124 is less than the distance between two adjacent perturbation structures 113, when the guiding section 122 moves outward along the telescopic direction relative to the mounting shell 110, the guiding block 124 far from the spoiler section 121 does not reach the perturbation structure 113, and the guiding block 124 close to the spoiler section 121 contacts the perturbation structure 113 first. At this time, the guiding block 124 far from the spoiler section 121 will serve as a fulcrum, and the guiding block 124 close to the spoiler section 121 causes the guiding section 122 to swing up and down under the action of the perturbation structure 113. Since the spoiler section 121 is connected to the guiding section 122, the up and down swing of the guiding section 122 drives the spoiler section 121 to swing up and down, thereby realizing the up and down swing of the telescopic wing 120. Another example is that when the guiding block 124 far from the spoiler section 121 moves to the perturbation structure 113, the guiding block 124 close to the spoiler section 121 serves as a fulcrum, and the guiding block 124 far from the spoiler section 121 swings up and down, and the corresponding guiding section 122 drives the spoiler section 121 to swing up and down.

[0070] In some embodiments, both the guiding convex surface 113a and the guiding concave surface 113b are arc surfaces, or the profiles of the guiding convex surface 113a, the guiding concave surface 113b, and the guiding block 124 are all arc surfaces. Making both the guiding convex surface 113a and the guiding concave surface 113b arc surfaces can improve the sliding smoothness between the guiding section 122 and the guiding cavity 111; in other embodiments, making the profiles of the guiding convex surface 113a, the guiding concave surface 113b, and the guiding block 124 all arc surfaces can further ensure the smooth sliding of the guiding section 122 within the guiding cavity 111, and setting the profiles as arc surfaces can realize continuously variable swing angles of the spoiler section 121. The curvatures of the guiding convex surface 113a, the guiding concave surface 113b, and the guiding block 124 can be adjusted according to the angle adjustment requirements, which will not be elaborated here.

[0071] Please continue to refer to Figure 3, in some embodiments, the guiding section 122 includes a body 123 and a guiding block 124 protruding from the body 123. The body 123 is in clearance fit with the guiding cavity 111, and the guiding block 124 is located on two side surfaces of the body 123 along the height direction. Only when the body 123 is in clearance fit with the guiding cavity 111 can the above-mentioned swinging be achieved, and the shape of the body 123 can be adapted to the shape of the guiding cavity 111.

[0072] In some embodiments, the guiding section 122 is provided with guiding balls 125 and / or horizontally arranged cylinders. The guiding balls 125 and / or the cylinders are rotatably connected to the body 123, and the guiding balls 125 and / or the cylinders partially protrude from two side surfaces of the body 123 along the height direction to form the guiding block 124, that is, the portions of the guiding balls 125 and / or the cylinders protruding from two side surfaces of the body 123 along the height direction form the guiding block 124. On the basis that there are two guiding blocks 124 as described above, the guiding section 122 is provided with guiding balls 125 and / or horizontally arranged cylinders. It can be understood that the guiding section 122 is provided with two guiding balls 125, or the guiding section 122 is provided with two horizontally arranged cylinders, or the guiding section 122 is provided with one guiding ball 125 and one cylinder; the horizontally arranged cylinder means that the axial direction of the cylinder extends along the horizontal direction, and the axial direction of the cylinder is perpendicular to the telescopic direction of the guiding section 122. When the guiding section 122 moves along the telescopic direction in the guiding cavity 111, the guiding balls 125 and / or the guiding columns are in rotational contact with the cavity wall of the guiding cavity 111, making the movement of the guiding section 122 in the guiding cavity 111 smoother. In other embodiments, the guiding block 124 can also achieve telescopic movement through sliding contact with the cavity wall of the guiding cavity 111.

[0073] In some embodiments, the profiles of the guiding convex surface 113a and the guiding concave surface 113b are both arc cylindrical surfaces. On the basis that the guiding section 122 is provided with guiding balls 125 or cylinders, extending along the width direction of the vehicle body 200 can ensure that even when the guiding balls 125 have position deviations, they can still act on the disturbance structure 113, improving the stability of the tail wing 100 during the telescopic, upward swing, and downward swing processes.

[0074] In other embodiments, the number of the disturbance structures 113 is more than two groups. The two or more groups of disturbance structures 113 are sequentially arranged at intervals along the direction perpendicular to the telescopic direction. The number of the guiding blocks 124 on both sides of the guiding section 122 along the height direction is the same as that of the disturbance structures 113, and each guiding block 124 corresponds to each disturbance structure 113 one by one, further improving the stability of the telescopic wing 120 during the telescopic process. In other embodiments, the number of the disturbance structures 113 and the number of the guiding blocks 124 can be adjusted according to actual needs and are not limited herein.

[0075] Please refer to Figure 6, in some embodiments, the driving mechanism 130 includes a power mechanism 131 and a connecting rod assembly driven by the power mechanism 131. The power mechanism 131 is located inside the mounting shell 110, and the execution end of the connecting rod assembly is connected to the guiding section 122. The power mechanism 131 can be a motor. The connecting rod assembly includes a first connecting rod 132 and a second connecting rod 133. The first connecting rod 132 is connected to the output shaft of the motor, and the first connecting rod 132 is perpendicular to the output shaft of the motor. The first connecting rod 132 is hinged to the second connecting rod 133, and the second connecting rod 133 is hinged to the guiding section 122. The end of the second connecting rod 133 away from the first connecting rod 132 forms the execution end. The above-described driving mechanism 130 is only an example. In other embodiments, the driving mechanism 130 can also be implemented by other crank-slider mechanisms, which will not be elaborated here. Specifically, two guiding blocks 124 are respectively provided on both sides of the guiding section 122 in the height direction. The two guiding blocks 124 are arranged at intervals in a direction perpendicular to the telescopic direction, that is, in the width direction of the vehicle body 200. The driving mechanism 130 is located between the two guiding blocks 124. In other embodiments, two driving mechanisms 130 can be provided, and the two driving mechanisms 130 are located on both sides of the guiding blocks 124.

[0076] In some embodiments, the tail wing 100 further includes a controller and a pressure sensor. The controller is electrically connected to the power mechanism 131; the pressure sensor is used to detect the wind pressure of the spoiler section 121, and the pressure sensor is electrically connected to the controller. The power mechanism 131 is a motor. The controller being electrically connected to the power mechanism 131 can control the forward rotation, reverse rotation, start and stop of the power mechanism 131. The controller being electrically connected to the power mechanism 131 belongs to the prior art, and the controller can control the power mechanism 131 through an encoder sensor connected to the motor, etc., which will not be elaborated here; the pressure sensor can detect the wind pressure of the spoiler section 121 in real time to measure the wind pressure data during the upswing or downswing of the spoiler section 121. After the controller compares the wind pressure data, it determines the angle with the minimum wind pressure, and controls the power mechanism 131 to act, driving the guiding section 122 to move to the optimal position, and then the power mechanism 131 stops acting to lock the guiding section 122 to the optimal position. At this time, the inclination angle of the spoiler section 121 is the inclination angle when the wind pressure is the lowest. In addition, the controller also collects the optimal length and inclination angle information of the tail wing 100 at different driving speeds of the vehicle collected according to numerical simulation or physical simulation, providing a reference for the telescopic length of the tail wing 100.

[0077] Please refer to Figure 7 and Figure 8, in some embodiments, one of the guiding section 122 and the mounting shell 110 is provided with a locking hole, and the other is provided with a locking member 140. When the guiding section 122 moves to a set position in the guiding cavity 111, the locking member 140 extends into the locking hole. The set position can be determined as needed. For example, the set position can be the bottommost part where the guiding section 122 extends into the guiding cavity 111, or the set position can also be any other position of the guiding section 122 within the guiding cavity 111. The locking member 140 includes a base, a spring piece, and a locking ball. The base is connected to the mounting hole 110. The base is provided with a locking cavity with an opening facing the guiding section 122. The spring piece is located in the locking cavity. One end of the spring piece is connected to the bottom wall of the locking cavity, and the other end of the spring piece is connected to the locking ball. The opening diameter of the locking cavity is smaller than the diameter of the locking ball. The locking ball is disposed in the locking cavity with a clearance. The side of the locking ball away from the spring piece extends out of the opening or is pressed into the locking cavity. When the locking hole in the guiding section is aligned with the side of the locking ball away from the spring piece, the side of the locking ball away from the spring piece extends into the locking hole to lock the telescopic wing 120 and the mounting shell 110. In addition, the locking member 140 can also be implemented by a locking shaft and a cylinder. The locking member 140 is a prior art, and the specific content can be referred to the prior art disclosure. The further content of the locking member 140 will not be elaborated.

[0078] In some embodiments, the mounting shell 110 is provided with a liquid passing hole that penetrates for draining liquid. The height of the liquid passing hole is lower than that of the driving mechanism 130. During the process of the length change of the tail wing 100, rainwater or external water sources may enter the mounting shell 110. The setting of the liquid passing hole can drain the rainwater or water sources in the mounting shell 110 to protect the driving mechanism 130. Specifically, the axial direction of the liquid passing hole can be along the vertical direction, or can have an angle with the vertical direction. The angle of the liquid passing hole can be adjusted according to the shape of the mounting shell 110, and no specific limitation is made. In certain embodiments, the mounting shell 110 is provided with a cavity. A depression on the outer side of the mounting shell 110 forms the guiding cavity 111. The middle part of the mounting shell 110 along the width direction of the vehicle body 200 is provided with a mounting cavity 114 communicating with the guiding cavity 111. The mounting cavity 114 is located below the guiding cavity 111. The driving mechanism 130 is located in the mounting cavity 114. The liquid passing hole is located below the mounting cavity 114, and the liquid passing hole communicates the mounting cavity 114 with the outside; when there are two sets of disturbing structures 113, the two sets of disturbing structures 113 are located on both sides of the mounting cavity 114 along the width direction of the vehicle body 200.

[0079] The working process of the tail wing 100 provided by the embodiment of the present application is as follows:

[0080] After the vehicle is started, the controller controls the locking member 140 to open, so that the guiding section 122 can extend and retract in the guiding cavity 111. During the driving of the vehicle, the driving speed data of the vehicle is collected by the controller. The controller obtains the optimal length of the spoiler 100 matching the speed according to the driving speed data, and controls the power mechanism 131 to act, so as to drive the guiding section 122 to reciprocate in the guiding cavity 111 until the length of the spoiler 100 along the direction of the vehicle body 200 reaches the optimal length of the spoiler 100, that is, the length of the spoiler 100 matches the current speed. Then the controller controls the power mechanism 131 to act, so that the guiding section 122 searches for the nearest disturbance structure 113. When the guiding block 124 contacts the disturbance structure 113, the spoiler section 121 first swings upward and then swings downward (it may also swing downward first and then swing upward). The pressure sensor transmits the wind pressure data during the upward and downward swinging processes to the controller. The controller judges the position corresponding to the minimum wind pressure during the upward and downward swinging of the telescopic wing 120. The controller controls the power mechanism 131 to make the guiding section 122 move to the position corresponding to the minimum wind pressure. The controller controls the power mechanism 131 to stop acting, and the driving mechanism 130 locks the telescopic wing 120 at the position corresponding to the minimum wind pressure; when the driving speed of the vehicle changes, such as accelerating from 80 km / h to 100 km / h, repeat the above steps until the spoiler 100 is adjusted to the length and inclination angle matching the driving speed.

[0081] The spoiler 100 provided by the embodiment of the present application can control the length and inclination angle of the spoiler 100 according to the driving speed of the vehicle, ensure the minimum wind resistance coefficient of the vehicle, and reduce energy consumption; due to the telescopic setting of the spoiler 100, the spoiler 100 can be matched with different vehicle models such as hatchbacks and sedans to meet the styling requirements and improve the versatility of the spoiler 100.

[0082] Embodiment 2

[0083] Based on the same technical concept as Embodiment 1, the embodiment of the present application provides a vehicle, which has a spoiler 100 with adjustable length and inclination angle. During driving, the wind resistance can be reduced by adjusting the length and angle of the spoiler 100, thereby reducing energy consumption.

[0084] The vehicle provided by the embodiment of the present application includes a vehicle body 200 and the spoiler 100 of Embodiment 1. The mounting shell 110 of the spoiler 100 is connected to the vehicle body 200. Specifically, for a sedan, the spoiler 100 can be installed on the lower side of the rear part of the vehicle body 200. Since the spoiler 100 itself is a telescopic structure, after the spoiler 100 retracts, the structure is compact and the occupied space is small, so the styling requirements of the sedan can be met; at the same time, the spoiler 100 can also be installed on the vehicle body 200 of a hatchback.

[0085] Although the preferred embodiments of the present application have been described, additional changes and modifications can be made to these embodiments by those of ordinary skill in the art once they learn of the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications that fall within the scope of the present application.

[0086] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

1. A tail fin, characterized in that, include: The mounting shell is provided with a guide cavity with an opening, and at least one set of disturbance structures is provided on the cavity wall of the guide cavity along the height direction, and the disturbance structure includes a guide convex surface and a guide concave surface with corresponding positions in the height direction and matching profiles, and the dimensions of the guide cavity at various locations along the telescopic direction in the height direction are the same; The telescopic wing is provided with a guide section extending into the guide cavity through the opening and a spoiler section located outside the mounting shell, and two guide blocks are provided on both sides of the guide section along the height direction; A driving mechanism is arranged inside the mounting shell, and is used to drive the guide section of the telescopic wing to move in the guide cavity along the telescopic direction. When the driving mechanism drives the guide block to move to contact the disturbance structure, one of the guide blocks serves as a fulcrum, and the other guide block rises and falls with the shapes of the guide convex surface and the guide concave surface, and the telescopic wing swings up or down relative to the mounting shell.

2. The fin according to claim 1, characterized in that, The number of the disturbance structures is more than two groups, and the more than two groups of disturbance structures are distributed at intervals along the telescopic direction.

3. The fin according to claim 2, characterized in that, The two or more groups of disturbance structures are distributed at equal intervals along the telescopic direction, and the distance D between the two guide blocks is set to D≠nd, where d is the distance between two adjacent disturbance structures, and n≥1.

4. The fin according to any one of claims 1-3, characterized in that, The profiles of the guide convex surface and the guide concave surface are both cambered surfaces; or, the profiles of the guide convex surface, the guide concave surface and the guide block are all cambered surfaces.

5. The fin according to claim 4, characterized in that, The guide section comprises a body and a guide block protruding from the body, the body is in clearance fit with the guide cavity, and the guide block is located on two side surfaces of the body along the height direction.

6. The fin according to claim 5, characterized in that, The guide section is provided with a guide ball and / or a horizontally arranged cylinder, the guide ball and / or the cylinder are rotatably connected to the body, and the guide ball and / or the cylinder partially protrude from two side surfaces of the body along the height direction to form the guide block.

7. The fin according to claim 4, characterized in that, The profiles of the guide convex surface and the guide concave surface are both arc-shaped cylindrical surfaces.

8. The fin according to any one of claims 1-3, characterized in that, The driving mechanism includes a power mechanism and a connecting rod assembly driven by the power mechanism, the power mechanism is located in the mounting shell, and the execution end of the connecting rod assembly is connected to the guide section; The tail wing also includes: A controller, electrically connected to the power mechanism; A pressure sensor is electrically connected to the controller and is used to detect the wind pressure of the spoiler section.

9. The fin according to any one of claims 1-3, characterized in that, One of the guide section and the mounting shell is provided with a locking hole, and the other is provided with a locking member, and when the guide section moves to a set position of the guide cavity, the locking member extends into the locking hole; The mounting shell is provided with a through-hole for draining liquid, and the height of the through-hole is lower than that of the driving mechanism.

10. A vehicle, characterized in that, include: Car body; The rear wing according to any one of claims 1 to 9, wherein the mounting shell is connected to the vehicle body.

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