3D air deflector and vehicle
By setting air inlets and outlets on the 3D wind deflector, combined with the tilting design of the deflector and the lifting mechanism, the problem of wind deflectors affecting fog light adjustment and causing abnormal noise in electric vehicles has been solved, resulting in lower wind resistance and longer range.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHERY AUTOMOBILE CO LTD
- Filing Date
- 2024-02-22
- Publication Date
- 2026-07-10
AI Technical Summary
Existing 3D wind deflector designs for electric vehicles often affect fog light adjustment space or cause abnormal noise when optimizing wind resistance performance, and cannot effectively reduce wind resistance.
Design a 3D wind deflector with air inlet and outlet holes. The deflector is tilted downwards to cover the fog light adjustment tool hole. Combined with a lifting mechanism, it ensures that the fog light adjustment space is not affected. The airflow is optimized through the air inlet and outlet holes to expel debris.
It achieves a significant reduction in wind resistance, increases the driving range of electric vehicles, and reduces abnormal noises during driving without affecting the fog light adjustment space.
Smart Images
Figure CN117885823B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of automotive technology, specifically to a 3D wind deflector and an automobile. Background Technology
[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.
[0003] Currently, there are two design approaches for wind deflectors in electric vehicles. The first approach is the same as that of gasoline vehicles, placing the wind deflector in front of the tires to reduce wind resistance. The second approach involves placing a 3D wind deflector in front of the tires to reduce wind resistance. Compared to gasoline vehicles, the second approach has the advantage of effectively reducing overall vehicle wind resistance and increasing the electric vehicle's driving range.
[0004] On the other hand, because wind tunnel testing of electric vehicles requires the optimal position, shape, and size of the wind deflector, the wind tunnel results often influence the requirements for the placement of other components. 1. For example, the space required for the Z-axis adjustment of the front fog lights may be occupied by the front 3D wind deflector. Often, to ensure wind resistance performance, the fog light configuration is sacrificed, or vice versa. 2. The front 3D wind deflector is fully enclosed to achieve optimal wind resistance performance. However, this full enclosure only forms a relatively closed surface with the lower front bumper. Inside the front bumper, a bowl-shaped structure is formed that can trap water, mud, and sand, which can cause abnormal noises when the vehicle is in motion. Summary of the Invention
[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a 3D wind deflector and automobile that achieves good wind deflection performance without affecting other functional components and reduces abnormal noise.
[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:
[0007] In a first aspect, embodiments of the present invention provide a 3D wind deflector, comprising a plate body, the plate body including a rear end plate and a guide plate disposed on the front surface of the rear end plate, the guide plate being provided with an air inlet, the air inlet being disposed at a predetermined position on the arc-shaped guide plate such that after the plate body is installed in a car and the plate body covers the fog light adjustment tool hole, the position of the air inlet corresponds to the position of the fog light adjustment tool hole, and the guide plate being provided with an air outlet at the rear end position where it connects to the rear end plate.
[0008] Optionally, the deflector is a flat plate, and the deflector is inclined downwards in the direction from front to back.
[0009] Optionally, the deflector is a downward-convex arc-shaped plate, and the cross-sectional area of the deflector gradually increases from front to back to diffuse the airflow in all directions.
[0010] Optionally, the air inlet can be a circular or square hole.
[0011] Optionally, the air outlet is an elongated hole, which is set along the rear edge of the guide plate.
[0012] Optionally, the centers of the air inlet and air outlet are both located on the center line of the plate along its length.
[0013] Optionally, the rear edge of the guide plate is fixed at the edge of the rear end plate.
[0014] Secondly, embodiments of the present invention provide a car equipped with the 3D wind deflector described in the first aspect, wherein the deflector covers the fog light adjustment tool hole of the car, and the position of the air intake corresponds to the position of the fog light adjustment tool hole.
[0015] Optionally, the plate is connected to a lifting mechanism, which is installed on the vehicle to adjust the height of the plate.
[0016] Optionally, the lifting mechanism is a screw lifting mechanism.
[0017] The beneficial effects of this invention are as follows:
[0018] 1. The 3D wind deflector of the present invention has an air intake hole on the deflector plate. After the wind deflector plate is installed on the car and covers the fog light adjustment tool hole, the position of the air intake hole corresponds to the position of the fog light adjustment tool hole, so that the operator can adjust the fog light through the air intake hole and the fog light adjustment tool hole. At the same time, the size of the plate is not limited, and the size can be increased along the width of the car, which greatly reduces wind resistance and improves the wind resistance performance of the 3D wind deflector plate.
[0019] 2. The 3D wind deflector of the present invention has a guide plate that is inclined downward from front to back, and an air outlet is provided at the rear end of the guide plate, so that water, mud, sand and other debris falling into the plate can slide down along the inner surface of the guide plate and be discharged through the air outlet, thereby reducing abnormal noise generated during the driving process of the car.
[0020] 3. The 3D wind deflector of the present invention has an air inlet and an air outlet. Combined with the shape design of the air deflector, the airflow enters the interior of the wind deflector through the air inlet and is accelerated. Then it is sprayed downward through the air outlet, thereby acting on the airflow flowing along the lower surface of the air deflector, so that it flows downward in the vertical plane and further diffuses the airflow in all directions, reducing wind resistance and improving the wind resistance performance of the wind deflector. Attached Figure Description
[0021] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.
[0022] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;
[0023] Figure 2 This is a schematic diagram of a conventional 3D wind deflector covering the fog light adjustment tool hole using the dimensions of Embodiment 1 of the present invention;
[0024] Figure 3 This is a schematic diagram of Embodiment 1 of the present invention and the increase in size of a traditional 3D windbreak plate;
[0025] Figure 4 This is a schematic diagram of the airflow direction during the use of the wind baffle in Embodiment 1 of the present invention;
[0026] The components are: 1. rear end plate, 2. guide plate, 3. air inlet, 4. air outlet, and 5. mounting base. Detailed Implementation
[0027] For ease of description, the words "upper" and "lower" appearing in this invention only indicate that they are consistent with the upper and lower directions of the accompanying drawings and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0028] In this embodiment, when the 3D windbreak is installed, the side where the front of the car is located is defined as the front side, and the other side is the rear side.
[0029] Example 1
[0030] This embodiment provides a 3D wind deflector for installation on the front side of a car's front wheel. This embodiment uses the posture of the 3D wind deflector in its usage state as an example for illustration. Specifically, as follows... Figure 1 As shown, the 3D wind deflector includes a plate body, which includes a rear end plate 1 and a guide plate 2 fixed to the front surface of the rear end plate. The guide plate 2 guides the airflow, thereby reducing the wind resistance during the car's forward movement.
[0031] In this embodiment, the guide plate 2 is an arc-shaped plate, and the arc-shaped plate protrudes downward. Along the direction from front to back, the vertical cross-sectional area of the guide plate 2 gradually increases until the cross-sectional area of its rear end is the same as the area of the rear end plate. The rear end edge of the arc-shaped plate corresponds to the edge of the rear end plate. The rear end edge of the arc-shaped plate is fixed at the edge position of the rear end plate, and the rear end edge of the arc-shaped plate is distributed along the edge of the rear end plate.
[0032] In this embodiment, the edge of the rear end plate 1 includes an upper edge and arc-shaped edges connecting both ends of the upper edge. One end of the arc-shaped edge is connected to one end of the upper edge, and the other end is connected to the other end of the upper edge. The upper edge is flat. The arc-shaped edges match and are fixedly connected to the rear end edge of the guide plate 2, so that the entire plate forms a bowl-shaped structure. The upper end face of the guide plate 2 is flush with the upper edge end face of the rear end plate 1.
[0033] Alternatively, the deflector 2 can be a flat plate, and the deflector 2 is inclined downward in the direction from front to back. That is, in the use state, the height of the front end of the deflector 2 is higher than the height of the rear end. In other words, the distance between the rear end of the deflector and the car chassis is greater than the distance between the front end and the car chassis. Therefore, the deflector can guide the airflow downward. The two sides of the deflector 2 are bent to form side plates. The rear ends of the deflector, the side plates and the rear end plate are fixed to form a bowl-shaped structure.
[0034] The panel adopts this configuration to form a 3D structure, which, compared to the wind deflector of a gasoline vehicle, can better disperse airflow, preventing airflow from acting on the tires and body, effectively reducing the overall wind resistance of the vehicle and increasing the driving range of the electric vehicle.
[0035] In this embodiment, compared to a traditional 3D windbreak, the size is increased along the width of the car, and the increase can be determined according to the width corresponding to different car models, such as... Figure 2 As shown, when the 3D wind deflector is increased in width, it will cover the fog light adjustment tool hole of the car, affecting the vertical position adjustment of the fog light. Therefore, in this embodiment, an air intake hole 3 is opened at a set position of the deflector. The position of the air intake hole 3 corresponds to the position of the fog light adjustment tool hole of the car chassis. After the 3D wind deflector is installed on the car and covers the fog light adjustment tool hole, the operator can still adjust the vertical position of the fog light through the air intake hole and the fog light adjustment tool hole.
[0036] Preferred, such as Figure 3 As shown, in this embodiment, the dimensions of the 3D wind deflector along the width of the vehicle are increased by 40mm, and the increase is made on the inner side. Experiments have shown that the overall drag coefficient of the vehicle is reduced by 2COUNT, demonstrating a significant reduction in wind resistance. This reduction in wind resistance translates to an increase of 20 kilometers per 100 kilometers in vehicle mileage. After the 3D wind deflector is increased by 40mm along the width of the vehicle, its original position on the chassis would cover the fog light adjustment tool hole. Therefore, an air intake 3 is created on the air deflector 2, with its position corresponding to the fog light adjustment tool hole, thus exposing the fog light adjustment tool hole. This allows operators to still vertically adjust the fog lights through the air intake and fog light adjustment tool hole without affecting the installation and use of the fog lights.
[0037] Reducing wind resistance by changing the size of 3D wind deflectors is a more cost-effective and convenient method than traditional methods such as changing the shape of rearview mirrors or the front bumper, thus lowering the manufacturing cost of automobiles.
[0038] The air inlet 3 can be a circular or square hole, which can be set according to actual needs by those skilled in the art. Preferably, the air inlet 3 is a circular hole.
[0039] The center of the circular hole is located on the center line of the car's rectangular shape along the length of the air deflector 2.
[0040] When the guide plate 2 and the rear end plate 1 are combined, they form a bowl-shaped structure. During the driving process, water, mud, sand and other debris will flow into the bowl-shaped structure, thereby increasing the abnormal noise generated during the driving process. Therefore, in this embodiment, an exhaust hole 4 is provided at the rear end where the guide plate 2 and the rear end plate 1 are connected.
[0041] Furthermore, the exhaust port 4 is an elongated hole. Since the guide plate 2 is an arc-shaped plate, the elongated hole 4 is an arc-shaped elongated hole set along the rear edge of the guide plate 2, and the center of the elongated hole is located on the center line set along the length of the vehicle of the guide plate 2.
[0042] When water, mud, sand, or other debris falls into the bowl-shaped structure during vehicle operation, the cross-sectional area of the guide plate 2 gradually increases from front to back. Therefore, the water, mud, sand, and other debris will slide down the guide plate 2 to the air outlet 4 and then be discharged from the air outlet 4, without remaining inside the bowl-shaped structure, thus reducing abnormal noise generated during vehicle operation.
[0043] In this embodiment, the air inlet 3 and air outlet 4 not only facilitate fog light adjustment and expel water, mud, sand, and other debris, but also, when combined with the shape of the guide plate 2, provide additional functionality. Figure 4 As shown, during vehicle operation, airflow enters the interior of the panel through the air intake 3, which accelerates the airflow. The accelerated airflow inside the panel is then ejected through the air outlet 4, and the direction of the ejected airflow is within a vertical plane. This airflow acts on the airflow flowing along the lower surface of the guide plate, causing the airflow to be further dispersed downwards. This allows the airflow to blow towards the surroundings and the ground without acting on the vehicle body or tires, thus reducing the airflow around the vehicle body and further reducing wind resistance, thereby improving the overall wind resistance performance of the vehicle.
[0044] Moreover, the air outlet 4 is an elongated hole, which increases the spray range of the injected gas and can maximize the change in the range of the airflow along the lower surface of the guide plate 2 to achieve the best airflow diffusion effect.
[0045] The 3D wind deflector used in this embodiment, through the setting of air inlet 3 and air outlet 4, enables the placement of a larger 3D wind deflector, optimizes wind resistance performance, and at the same time, the fog light adjustment space is not affected. Water, mud, sand and other debris can be smoothly discharged to prevent abnormal noise, reduce wind resistance and increase driving range.
[0046] Example 2
[0047] This embodiment provides a car, which is an electric vehicle, equipped with the 3D wind deflector described in Embodiment 1. The deflector is located on the front side of the front wheel of the car and covers the fog light tool adjustment hole. The position of the air intake hole on the deflector corresponds to the fog light adjustment tool hole of the car chassis.
[0048] Furthermore, the plate is connected to a lifting mechanism, which is installed on the vehicle. The lifting mechanism can adjust the height of the 3D windbreak plate to adapt to special road surfaces (potholes / speed bumps / shoulders) and meet the ground clearance requirements.
[0049] Under normal road conditions, the 3D wind deflector is positioned at the set normal height. When encountering special road surfaces, the screw lifting mechanism drives the 3D wind deflector to adjust its height accordingly to meet the ground clearance requirements.
[0050] The lifting mechanism can be an electric lifting rod or a screw lifting mechanism, etc., and those skilled in the art can set it according to actual needs.
[0051] Preferably, the lifting mechanism adopts a screw lifting mechanism, such as the screw lifting mechanism for lifting the wind baffle disclosed in patent application CN107323543A. The screw lifting mechanism includes a servo motor, which is installed inside the car body. The output shaft of the servo motor is connected to the screw, which can drive the screw to rotate around its own axis. The screw is threadedly connected to a screw slider, which is slidably connected to the car body and can move vertically along the axis of the screw. The screw slider is connected to the lifting plate through a bracket. The lifting plate is fixed to four fixed seats 5 on the surface of the guide plate by bolts, thereby realizing the lifting and lowering movement of the 3D wind baffle. The fixed seats 5 are also provided with positioning columns. Correspondingly, the lifting plate is provided with positioning holes for positioning the relative position of the lifting plate and the fixed seats 5.
[0052] The remaining structure of the vehicle can be constructed using existing technology and will not be described in detail here.
[0053] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A 3D windbreak plate, comprising a plate body, the plate body including a rear end plate and a guide plate disposed on the front surface of the rear end plate, characterized in that, The air intake is provided on the air deflector plate. The air intake is set at a predetermined position on the arc-shaped air deflector plate. The predetermined position is such that after the plate is installed on the car and the plate covers the fog light adjustment tool hole, the position of the air intake corresponds to the position of the fog light adjustment tool hole. An air outlet is provided at the rear end position of the air deflector plate connected to the rear end plate.
2. A 3D windbreak plate as described in claim 1, characterized in that, The deflector is a flat plate, and it is inclined downwards in the direction from front to back.
3. A 3D windbreak plate as described in claim 1, characterized in that, The guide plate is an arc-shaped plate that convexes downwards, and the cross-sectional area of the guide plate gradually increases from front to back.
4. A 3D windbreak plate as described in claim 1, characterized in that, The air intake can be either circular or square.
5. A 3D windbreak plate as described in claim 1, characterized in that, The air outlet is an elongated hole, which is set along the rear edge of the guide plate.
6. A 3D windbreak plate as described in claim 1, characterized in that, The centers of the air inlet and air outlet are both located on the center line of the plate along its length.
7. A 3D windbreak plate as described in claim 1, characterized in that, The rear edge of the guide plate is fixed at the edge of the rear end plate.
8. A car, characterized in that, The vehicle is provided with a 3D wind deflector as described in any one of claims 1-7, wherein the deflector covers the fog light adjustment tool hole of the vehicle, and the position of the air intake corresponds to the position of the fog light adjustment tool hole.
9. A car as described in claim 8, characterized in that, The plate is connected to a lifting mechanism, which is installed on the vehicle to adjust the height of the plate.
10. A vehicle as described in claim 9, characterized in that, The lifting mechanism is a screw lifting mechanism.