Automobile side wind blocking device, control method and automobile

Abstract

The present invention discloses a side wind-blocking device for a vehicle, a control method, and a vehicle, comprising a wind-blocking plate, a guide mechanism, and a drive mechanism. The guide mechanism is fixed to a position near the bottom of the curved surface of the rear wheel housing of the vehicle, and the guide mechanism is located in front of the rear wheel of the vehicle. The wind-blocking plate is slidably connected to the guide mechanism, and the driving end of the drive mechanism is connected to the wind-blocking plate. The drive mechanism can drive the wind-blocking plate to reciprocate along the guide mechanism, and can move the wind-blocking plate to the outer side of the rear wheel housing of the vehicle to block the protruding portion of the rear wheel of the vehicle. The present invention realizes the control of the airflow on the side of the vehicle body, can prevent the side airflow from being drawn into the rear wheel cavity and impacting the rear wheel, thereby achieving the purpose of reducing the wind resistance of the entire vehicle.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobiles, and in particular relates to an automobile side wind blocking device, a control method and an automobile. Background Art

[0002] A 0.02% reduction in drag on a fuel-powered vehicle translates to a 0.1L reduction in overall fuel consumption. The range of pure electric vehicles is even more sensitive to the drag coefficient, especially at high-speed cruising conditions at 120 km / h. Every 0.01% reduction in the drag coefficient improves range by 10-16 km. Specifically, when the drag coefficient drops from a typical 0.30 to an industry-leading 0.21, range increases by 118 km. Therefore, optimizing drag reduction is crucial in automotive design.

[0003] Due to the emergence of electric vehicles as a new phenomenon, some extreme design styles have emerged, such as hidden door handles. Therefore, structural designs that reduce wind resistance can be more rationally integrated into the vehicle's styling. If the device affects the overall style of the vehicle, then an adjustable wind resistance device is more suitable. However, an adjustable wind resistance device will generate additional energy consumption, so the energy consumption brought by the drag reduction device and the contribution of wind resistance reduction need to be balanced. Because the driving resistance of a vehicle is proportional to the square of the vehicle speed, and the power consumption is proportional to the cube of the vehicle speed, a low drag coefficient has a greater impact on high-speed vehicles.

[0004] In the design of low-drag cars, it has become a basic requirement that there is no airflow separation on the side of the front bumper. The side airflow fits the surface of the car body. If the side shape cannot cover the rear wheel, the airflow will be drawn into the rear wheel cavity in large quantities, and the impact pressure of the headwind airflow on the rear wheel is large. As the wind resistance requirements of electric vehicles have almost reached the extreme, the problem of airflow impact on the rear wheel must be solved. The related patent CN214451394U - "A car wheel wind-blocking structure" proposes a wind-blocking plate installed in front of the front wheel of the car. During driving, the height of the wind-blocking plate can be automatically controlled according to the vehicle speed, effectively reducing the aerodynamic resistance encountered by the car during driving. The related patent CN208021565U - "A new type of car wind-blocking plate" proposes a rotating device connected to the lower part of the car's front bumper assembly or subframe assembly, while taking into account the vehicle's passability, handling stability and fuel consumption. Related patent CN203854749U, "A Front Wheel Wind Deflector Device for Automobiles," proposes a front wheel wind deflector device installed at the front end of the front wheel housing fender of an automobile to reduce the wind resistance of the entire vehicle. Although the wind deflectors mentioned in these three patents differ in structural details, they are all installed at the bottom of the vehicle body and in front of the front wheels. They only improve the impact of bottom airflow on the front tires, but fail to address the problem of side airflow being drawn into the rear wheel cavity and impacting the rear wheels. Summary of the Invention

[0005] In response to the problems existing in the prior art, the present invention provides a vehicle side wind-blocking device, a control method and a vehicle, which realize the control of the airflow on the side of the vehicle body, and can prevent the side airflow from being drawn into the rear wheel cavity and impacting the rear wheel, thereby achieving the purpose of reducing the wind resistance of the entire vehicle.

[0006] In order to solve the above technical problems, the present invention is implemented through the following technical solutions:

[0007] A side wind-blocking device for an automobile comprises a wind-blocking plate, a guide mechanism and a drive mechanism, wherein the guide mechanism is fixed on a curved surface of a rear wheel cover of the automobile near the bottom, and the guide mechanism is located in front of the rear wheel of the automobile; the wind-blocking plate is slidably connected to the guide mechanism, and the driving end of the drive mechanism is connected to the wind-blocking plate; the drive mechanism can drive the wind-blocking plate to reciprocate along the guide mechanism, and can move the wind-blocking plate to the outer side surface of the rear wheel cover of the automobile to cover the convex part of the rear wheel of the automobile.

[0008] Furthermore, the guide mechanism includes a connecting rod and two guide rails, the two guide rails are fixed on the curved surface of the rear wheel cover of the automobile, the two ends of the connecting rod are respectively slidably connected to the two guide rails, the driving end of the driving mechanism is connected to the connecting rod, and the wind deflector is connected to the connecting rod.

[0009] Furthermore, both ends of the connecting rod are respectively connected to pulleys, and each pulley is slidably connected to the two guide rails.

[0010] Furthermore, a choke plate connecting block is fixedly connected to the connecting rod, and the choke plate is connected to the choke plate connecting block.

[0011] Furthermore, the driving mechanism includes a power device and a driving rod, one end of the driving rod is connected to the connecting rod, and the other end of the driving rod is connected to the driving end of the power device.

[0012] Furthermore, an elastic member is connected between the power device and the connecting rod.

[0013] Furthermore, limit blocks are respectively provided on the two guide rails. When the wind blocking plate moves to the outer side of the rear wheel cover of the automobile to block the convex part of the rear wheel of the automobile, the connecting rod is in close contact with the limit blocks.

[0014] Furthermore, when the wind deflector moves to the outer side of the rear wheel cover of the automobile to cover the convex part of the rear wheel of the automobile, the outer side of the wind deflector is flush with the outer side of the rear wheel of the automobile.

[0015] A method for controlling a side wind-blocking device of an automobile comprises: when the automobile speed exceeds a set speed, the driving mechanism drives the wind-blocking plate to move outward along the guide mechanism, and causes the wind-blocking plate to move to the outer side surface of the automobile's rear wheel cover to cover the convex portion of the automobile's rear wheel; when the automobile speed does not exceed the set speed, the driving mechanism drives the wind-blocking plate to move inward along the guide mechanism, and causes the wind-blocking plate to move to the curved surface of the automobile's rear wheel cover to be hidden.

[0016] A car, wherein the car side wind blocking device is arranged in the rear wheel cover of the car.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] The present invention provides a side wind-blocking device for an automobile. A designed drive mechanism can drive a wind-blocking plate to reciprocate along a guide mechanism and move the wind-blocking plate to the outer side of the automobile's rear wheel housing to block the protruding portion of the automobile's rear wheel. When the automobile's speed exceeds a set speed, the drive mechanism drives the wind-blocking plate to move outward along the guide mechanism and move the wind-blocking plate to the outer side of the automobile's rear wheel housing to block the protruding portion of the automobile's rear wheel. The wind-blocking plate blocks high-speed airflow flowing from the front to the rear of the automobile, reducing airflow entering the automobile's rear wheel cavity and reducing airflow impact on the automobile's rear wheel. This achieves control of airflow on the side of the automobile body, preventing the side airflow from entering the rear wheel cavity and impacting the rear wheel, thereby achieving the purpose of reducing the wind resistance of the entire vehicle. When the automobile's speed does not exceed the set speed, the drive mechanism drives the wind-blocking plate to move inward along the guide mechanism and move the wind-blocking plate into the curved surface of the automobile's rear wheel housing to hide it. That is, when the vehicle is stationary, the wind-blocking device of the present invention is in a retracted state and does not affect parking.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the specific embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the installation structure of a side wind blocking device for an automobile according to the present invention;

[0022] Figure 2 This is a schematic diagram of the state of the wind blocking plate of a side wind blocking device of an automobile when the vehicle is parked;

[0023] Figure 3 This is a schematic diagram of the state of the wind blocking plate of a side wind blocking device of an automobile when the vehicle is traveling at a low speed;

[0024] Figure 4 This is a schematic diagram of the state of the wind blocking plate of a side wind blocking device of an automobile when the vehicle is traveling at high speed;

[0025] Figure 5 In the figure, (a) is a partial schematic diagram of the position of the wind deflector of the present invention when it is extended in the car, and (b) is a schematic diagram of the position relationship between the wind deflector and the rear wheel of the car when the wind deflector of the present invention is extended, from the perspective of the front to the rear of the car;

[0026] Figure 6 In the figure, (a) is a schematic diagram of the flow field on the rear wheel of a car when the wind blocking device of the present invention is not used, and (b) is a schematic diagram of the flow field on the rear wheel of a car when the wind blocking device of the present invention is used.

[0027] In the figure: 1-wind spoiler; 2-guide mechanism; 201-connecting rod; 202-guide rail; 203-pulley; 3-driving mechanism; 301-power device; 302-driving rod; 303-elastic member; 4-rear wheel cover; 5-rear wheel; 6-wind spoiler connecting block; 7-side skirt; 8-wheel eyebrow. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] As a specific embodiment of the present invention, Figure 1As shown, a side wind-blocking device for a vehicle comprises a wind-blocking plate 1, a guide mechanism 2, and a drive mechanism 3. The guide mechanism 2 is fixed to the curved surface of the vehicle's rear wheel housing 4, near the bottom, and is located in front of the vehicle's rear wheel 5. The wind-blocking plate 1 is slidably connected to the guide mechanism 2, and the drive end of the drive mechanism 3 is connected to the wind-blocking plate 1. The drive mechanism 3 is capable of driving the wind-blocking plate 1 to reciprocate along the guide mechanism 2 and to move the wind-blocking plate 1 to the outer side of the vehicle's rear wheel housing 4, thereby shielding the protruding portion of the vehicle's rear wheel 5. Specifically, the drive mechanism 3 performs a driving task based on a preset condition, which is the vehicle's speed. When the vehicle's speed reaches the preset speed, the drive mechanism 3 drives the wind-blocking plate 1 outward along the guide mechanism 2, causing the wind-blocking plate 1 to move to the outer side of the vehicle's rear wheel housing 4, thereby shielding the protruding portion of the vehicle's rear wheel 5. The wind-blocking plate 1 blocks high-speed airflow flowing from the front to the rear of the vehicle, reducing the airflow entering the wheel cavity of the vehicle's rear wheel 5 and reducing the airflow impact on the vehicle's rear wheel 5. The present invention can adjust the working state according to the vehicle speed, thereby reducing the energy consumption of the system itself.

[0030] On the basis of the above embodiment, as a more preferred embodiment, Figure 1 As shown, the guide mechanism 2 includes a connecting rod 201 and two guide rails 202. The two guide rails 202 are fixed to the curved surface of the rear wheel housing 4 of the vehicle. The two ends of the connecting rod 201 are respectively slidably connected to the two guide rails 202. The driving end of the driving mechanism 3 is connected to the connecting rod 201, and the wind deflector 1 is connected to the connecting rod 201. For example, the two guide rails 202 are fixed to the rear wheel housing 4 of the vehicle by screws or clips. The connecting rod 201 is made of stainless steel.

[0031] That is to say, the driving end of the driving mechanism 3 drives the connecting rod 201, so that the connecting rod 201 slides on the two guide rails 202, so that the wind deflector 1 can move back and forth along the guide rail 202, so that the wind deflector 1 moves to the outer side of the rear wheel cover 4 of the car to cover the convex part of the rear wheel 5 of the car.

[0032] Preferably, Figure 1 As shown, the two ends of the connecting rod 201 are connected to pulleys 203, and each pulley 203 is slidably connected to the two guide rails 202. When the driving end of the driving mechanism 3 drives the connecting rod 201, the pulley 203 rolls on the guide rails 202 to ensure that the connecting rod 201 moves more smoothly. For example, the pulley 203 is made of stainless steel.

[0033] Preferably, Figure 1As shown, a choke plate connecting block 6 is fixedly connected to the connecting rod 201, and the choke plate 1 is connected to the choke plate connecting block 6. The choke plate connecting block 6 makes the installation structure of the choke plate 1 more reliable. For example, the choke plate connecting block 6 and the connecting rod 201 are fixed by screws. The choke plate 1 and the choke plate connecting block 6 can be made into one piece. The choke plate 1 and the choke plate connecting block 6 are made of plastic, which is low in cost.

[0034] Preferably, a limit block (not shown) is provided on each of the two guide rails 202. When the wind choke plate 1 moves to the outer side of the rear wheel housing 4 of the automobile to block the convex portion of the rear wheel 5 of the automobile, the connecting rod 201 is in close contact with the limit block. The provision of the limit block can better ensure that when the wind choke plate 1 moves to the outer side of the rear wheel housing 4 of the automobile to block the convex portion of the rear wheel 5 of the automobile, the outer side of the wind choke plate 1 is flush with the outer side of the rear wheel 5 of the automobile. In other words, combined with Figure 5 As shown in (a) and (b), when the deflector plate 1 is extended to the maximum, its outer side is just flush with the outer side of the rear wheel 5 of the car (that is, the projection of the deflector plate 1 along the X direction can cover the rear wheel), which can effectively reduce the additional resistance caused by the deflector plate 1 being too large. Figure 5 The figure also shows the positional relationship between the wind spoiler 1 and the side skirts 7 and wheel arches 8 of the vehicle.

[0035] On the basis of the above embodiment, as a more preferred embodiment, Figure 1 As shown, the drive mechanism 3 includes a power device 301 and a drive rod 302. One end of the drive rod 302 is connected to the connecting rod 201, and the other end of the drive rod 302 is connected to the driving end of the power device 301. Specifically, the power device 301 transmits the driving force to the connecting rod 201 through the drive rod 302, thereby causing the connecting rod 201 to move along the guide rail 202. The structural design is simple, easy to implement, and low in cost. For example, one end of the drive rod 302 is fixed to the connecting rod 201 by welding, and one end of the drive rod 302 is located in the middle position of the connecting rod 201. The power device 301 can be a cylinder. Of course, it can also be any other mechanical drive structure that can achieve the above functions.

[0036] Preferably, Figure 1 As shown, an elastic member 303 is further connected between the power device 301 and the connecting rod 201, and the elastic member 303 assists in providing a limiting and returning function to the connecting rod 201. For example, the elastic member 303 is a spring.

[0037] The shape of the choke plate significantly influences the side airflow. CFD simulation was used to optimize the choke plate's shape to ensure that the side airflow flows closely to the side of the rear tire. The choke plate's shape is merely an example and is not limited to a specific shape or size. This means that the choke plate's shape can be freely adjusted to suit different vehicle models, making it highly applicable. In this embodiment, the choke plate's shape was designed based on vehicle model data and CFD simulation results, taking into account the vehicle's high-speed airflow field.

[0038] The automobile side wind blocking device of the present invention is located on the rear wheel covers on the left and right sides of the automobile and is symmetrically arranged.

[0039] The present invention provides a control method for a side wind-blocking device of an automobile, comprising: when the automobile speed exceeds a set speed, a driving mechanism 3 drives a wind-blocking plate 1 to move outward along a guide mechanism 2, and moves the wind-blocking plate 1 to the outer side surface of a rear wheel cover 4 of the automobile to cover the convex portion of a rear wheel 5 of the automobile; when the automobile speed does not exceed the set speed, the driving mechanism 3 drives the wind-blocking plate 1 to move inward along the guide mechanism 2, and moves the wind-blocking plate 1 to be hidden within the curved surface of the rear wheel cover 4 of the automobile.

[0040] Specifically, combined Figure 2 、 Figure 3 and Figure 4 As shown, when the vehicle is at rest, the power unit 301 does not generate driving force, and the wind deflector 1 is in the initial state, that is, hidden on the curved surface of the rear wheel housing 4 of the vehicle, see Figure 2 As shown. When the vehicle is traveling at high speed, the internal circuit of the power unit 301 is connected, generating a driving force. The power unit 301 pushes the driving rod 302. When the driving force on the driving rod 302 is greater than the pulling force of the elastic member 303, the driving rod 302 drives the connecting rod 201. The connecting rod 201 rotates along the guide rail 202 toward the outside of the vehicle along with the pulley 203, driving the deflector plate 1 to move toward the outside of the vehicle body. When the deflector plate 1 moves to the outside of the rear wheel cover 4 of the vehicle and blocks the protruding portion of the rear wheel 5 of the vehicle, the limit block on the guide rail 202 restricts the rolling of the pulley 203. The driving force on the driving rod 302 = the resistance of the limit block + the pulling force of the elastic member. The deflector plate 1 stops moving and stops at the designed position, that is, the outer side of the deflector plate 1 is flush with the outer side of the rear wheel 5 of the vehicle. Figure 4 When the vehicle is traveling at a low speed, only a portion of the control spoiler 1 moves to the outer side of the rear wheel housing 4 of the vehicle, partially shielding the protruding portion of the rear wheel 5 of the vehicle. Figure 3 shown.

[0041] The present invention provides a car, wherein the car side wind blocking device provided by the present invention is installed in the rear wheel cover 4 of the car. After using the car side wind blocking device, the wind blocking plate reduces the airflow entering the wheel cavity of the rear wheel of the car, thereby reducing the airflow impact on the rear wheel. Figure 6 As shown in (a) and (b), the pressure cloud diagrams show that the high-pressure area on the rear wheels (the dark shaded area in the box) is significantly reduced after the vehicle side wind resistance device is installed. This device effectively reduces the impact of airflow on the rear wheels when the vehicle is traveling at high speeds, reducing the vehicle's wind resistance by 4-8 counts, thereby improving the range of electric vehicles and reducing fuel consumption in gasoline-powered vehicles.

[0042] The present invention is only intended to describe the simple principle of the device, and any changes in size do not exceed the scope of the present invention.

[0043] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A side wind blocking device for an automobile, characterized in that: The invention comprises a wind deflector (1), a guide mechanism (2) and a drive mechanism (3); the guide mechanism (2) is fixed on a curved surface of a rear wheel cover (4) of an automobile near the bottom, and the guide mechanism (2) is located in front of the rear wheel (5) of the automobile; the wind deflector (1) is slidably connected to the guide mechanism (2), and the drive end of the drive mechanism (3) is connected to the wind deflector (1); the drive mechanism (3) can drive the wind deflector (1) to reciprocate along the guide mechanism (2), and can make the wind deflector (1) move to the outer side of the rear wheel cover (4) of the automobile to block the convex part of the rear wheel (5) of the automobile; The guide mechanism (2) comprises a connecting rod (201) and two guide rails (202), the two guide rails (202) being fixed on the arc surface of the rear wheel cover (4) of the automobile, the two ends of the connecting rod (201) being slidably connected to the two guide rails (202), the driving end of the driving mechanism (3) being connected to the connecting rod (201), and the wind deflector (1) being connected to the connecting rod (201); Limiting blocks are respectively provided on the two guide rails (202); when the wind blocking plate (1) moves to the outer side of the rear wheel cover (4) of the automobile to block the convex portion of the rear wheel (5) of the automobile, the connecting rod (201) is in close contact with the limiting blocks; When the wind deflector (1) moves to the outer side of the rear wheel cover (4) of the automobile to cover the convex portion of the rear wheel (5) of the automobile, the outer side of the wind deflector (1) is flush with the outer side of the rear wheel (5) of the automobile.

2. The automobile side wind blocking device according to claim 1, characterized in that: Both ends of the connecting rod (201) are respectively connected to pulleys (203), and each pulley (203) is slidably connected to the two guide rails (202).

3. The automobile side wind blocking device according to claim 1, characterized in that: A choke plate connecting block (6) is fixedly connected to the connecting rod (201), and the choke plate (1) is connected to the choke plate connecting block (6).

4. The automobile side wind blocking device according to claim 1, characterized in that: The driving mechanism (3) comprises a power device (301) and a driving rod (302), one end of the driving rod (302) is connected to the connecting rod (201), and the other end of the driving rod (302) is connected to the driving end of the power device (301).

5. The automobile side wind blocking device according to claim 4, characterized in that: An elastic member (303) is connected between the power device (301) and the connecting rod (201).

6. A method for controlling a side wind blocking device of an automobile according to any one of claims 1 to 5, characterized in that: include: When the speed of the vehicle exceeds a set speed, the driving mechanism (3) drives the deflector (1) to move outward along the guide mechanism (2), and moves the deflector (1) to the outer side of the rear wheel cover (4) of the vehicle to cover the convex part of the rear wheel (5) of the vehicle; when the speed of the vehicle does not exceed the set speed, the driving mechanism (3) drives the deflector (1) to move inward along the guide mechanism (2), and moves the deflector (1) to the curved surface of the rear wheel cover (4) of the vehicle to hide.

7. An automobile, characterized in that: The automobile side wind blocking device according to any one of claims 1 to 5 is arranged in the rear wheel cover (4) of the automobile.

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