A downforce device for a vehicle and a vehicle

Abstract

The embodiment of the application provides a down pressure device for a vehicle and the vehicle, and the down pressure device comprises: a mounting seat, which is used for being mounted at a side skirt of the vehicle; and a blowing assembly, which is connected with the mounting seat and comprises a plurality of blowing pieces, the plurality of blowing pieces are distributed along the length direction of the mounting seat, and each blowing piece has a first position for blowing air upward along the Z-axis of the vehicle. According to the above scheme, the down pressure device can quickly respond and flexibly adjust the down pressure of the vehicle according to the driving state of the vehicle, so as to meet the stability requirement of the vehicle.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and more specifically, to a downforce device for a vehicle and a vehicle. Background Technology

[0002] With the rapid development of electric sports car technology, the top speed and acceleration performance of vehicles are constantly improving, placing higher demands on the stability of vehicles at high speeds. At high speeds, aerodynamic effects become particularly significant. The lift problem of the vehicle (i.e., the upward force generated by the airflow above the vehicle) affects the adhesion between the tires and the road surface, reducing grip and thus affecting the vehicle's handling and driving safety.

[0003] Traditional aerodynamic devices, such as rear wings and diffusers, while increasing downforce to some extent, have limited effectiveness in complex road conditions and emergency obstacle avoidance situations, failing to provide sufficient responsiveness and agility.

[0004] There is currently no good solution to the technical problem that the tail wing and diffuser in the existing technology cannot meet the downforce requirements of the vehicle. Summary of the Invention

[0005] This application provides a downforce device and a vehicle for use in vehicles, thereby at least solving the technical problem that the tail wing and diffuser in the prior art cannot meet the downforce requirements of vehicles.

[0006] According to one aspect of the present application, a downforce device for a vehicle is provided, comprising: a mounting base for mounting on the side skirt of the vehicle; and a blower assembly connected to the mounting base, the blower assembly including a plurality of blowers distributed along the length direction of the mounting base, each blower having a first position for blowing air upward along the Z-axis of the vehicle.

[0007] Furthermore, the blower assembly also includes: a rotating base, which is rotatably connected to the mounting base via a first rotating shaft, the first rotating shaft extending along the length direction of the mounting base, and each blower component being connected to the rotating base; and a first driving member, the fixed end of which is connected to the mounting base, and the driving end of which is connected to the first rotating shaft, to drive the rotating base to rotate relative to the mounting base, so that each blower component has a second position of blowing air to the left along the Y-axis of the vehicle, and a third position of blowing air to the right along the Y-axis of the vehicle.

[0008] Furthermore, the mounting base is provided with a mounting groove, which is provided through the height direction of the mounting base and extends along the length direction of the mounting base, and the rotating seat is located in the mounting groove.

[0009] Furthermore, the rotating base is provided with multiple receiving slots, which are spaced apart along the length of the rotating base, and each blower is correspondingly placed in each receiving slot.

[0010] Furthermore, each blower is rotatably connected to the rotating seat via a second rotating shaft, the second rotating shaft being perpendicular to the first rotating shaft. The blower assembly also includes a second driving member, the fixed end of which is connected to the rotating seat, and the driving end of which is connected to the second rotating shaft, to drive the blower to rotate relative to the rotating seat, so that each blower has a fourth position where it blows air along the X-axis of the vehicle toward the front side.

[0011] Furthermore, the blower is a propeller, and the middle part of the blower is connected to the third drive unit through the third rotating shaft. The third drive unit is used to drive the blower to rotate around the third rotating shaft.

[0012] Furthermore, a protective cover is provided on the outside of the blower, and a safety gap is provided between the outer edge of the blower and the inner wall of the protective cover.

[0013] Furthermore, the downpressure device also includes a control component, which is electrically connected to the blower component and is used to control the blowing direction of the blower component according to the vehicle's driving conditions.

[0014] According to another aspect of the embodiments of this application, a vehicle is also provided, the vehicle including a downpressure device, the downpressure device being the downpressure device described above.

[0015] Furthermore, the lower pressure device is movably connected to the side skirt, and the lower pressure device has a retracted position that flips toward the side skirt so that the blower assembly is located between the mounting base and the side skirt, and a working position that flips away from the side skirt so that the blower assembly is exposed.

[0016] In the embodiments of this application, when the vehicle is traveling at high speed, each blower can be adjusted to a first position so that each blower blows air upwards along the Z-axis of the vehicle, generating an upward airflow. This creates a low-pressure zone below the mounting base. According to Bernoulli's principle, this pressure difference will cause the mounting base to experience a downward force. Since the mounting base is connected to the vehicle, this will cause the vehicle to experience downforce, increasing the contact area and adhesion between the tires and the road surface, thereby improving the vehicle's grip and ensuring the vehicle's stability at high speeds. Compared with the rear wing and diffuser in the prior art, in complex road conditions and emergency obstacle avoidance situations, the airflow speed of the blowers can be activated and adjusted according to the real-time driving status (e.g., acceleration, speed), so as to adjust the downforce of the vehicle in a timely manner, thereby maintaining the vehicle's stable posture and avoiding loss of control. The downforce device in the above solution can quickly respond to and flexibly adjust the downforce of the vehicle according to the vehicle's driving status to meet the vehicle's stability requirements. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 A schematic diagram of the lower pressure device is shown;

[0019] Figure 2 A schematic diagram showing the installation relationship between the rotating base and the blower is provided.

[0020] Figure 3 A schematic diagram of the vehicle is shown.

[0021] The above figures include the following reference numerals:

[0022] 100. Downward pressure device;

[0023] 200. Side skirt;

[0024] 1. Mounting bracket;

[0025] 11. Mounting slot;

[0026] 2. Hair dryer assembly;

[0027] 21. Blower; 22. Rotary seat; 221. Receiving groove; 23. First rotating shaft; 24. Second rotating shaft; 25. Third rotating shaft; 26. Protective cover. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0031] Combination Figures 1 to 3 As shown, according to a specific embodiment of this application, a downforce device for a vehicle is provided.

[0032] Specifically, the downpressure device includes a mounting base 1 and a blower assembly 2. The mounting base 1 is used to install on the side skirt 200 of the vehicle. The blower assembly 2 is connected to the mounting base 1. The blower assembly 2 includes a plurality of blowers 21, which are distributed along the length of the mounting base 1. Each blower 21 has a first position for blowing air upward along the Z-axis of the vehicle.

[0033] In the embodiments of this application, when the vehicle is traveling at high speed, each blower 21 can be adjusted to a first position so that each blower 21 blows air upward along the Z-axis of the vehicle, generating an upward airflow. This creates a low-pressure zone below the mounting base 1. According to Bernoulli's principle, this pressure difference will cause the mounting base 1 to experience a downward force. Since the mounting base 1 is connected to the vehicle, the vehicle will experience downforce, increasing the contact area and adhesion between the tires and the road surface, thereby improving the vehicle's grip and ensuring the vehicle's stability at high speeds. Compared with the rear wing and diffuser in the prior art, in complex road conditions and emergency obstacle avoidance situations, the airflow speed of the blower 21 can be activated and adjusted according to the real-time driving status (e.g., acceleration, speed), so as to adjust the downforce of the vehicle in a timely manner, thereby maintaining the vehicle's stable posture and avoiding loss of control. The downforce device in the above solution can quickly respond to and flexibly adjust the downforce of the vehicle according to the vehicle's driving status to meet the vehicle's stability requirements.

[0034] It should be noted that the X-axis of a vehicle refers to its length, the Y-axis refers to its width, and the Z-axis refers to its height.

[0035] Furthermore, the blower assembly 2 also includes a rotating base 22 and a first driving member. The rotating base 22 is rotatably connected to the mounting base 1 via a first rotating shaft 23, which extends along the length of the mounting base 1. Each blower element 21 is connected to the rotating base 22. The fixed end of the first driving member is connected to the mounting base 1, and the driving end of the first driving member is connected to the first rotating shaft 23, so as to drive the rotating base 22 to rotate relative to the mounting base 1, so that each blower element 21 has a second position of blowing air to the left along the Y-axis of the vehicle, and a third position of blowing air to the right along the Y-axis of the vehicle.

[0036] In the embodiments of this application, each blower 21 is integrated on the rotating base 22. By driving the rotating base 22 to rotate around the first rotating shaft 23, the position adjustment of all blowers 21 can be achieved at one time, thereby simplifying the rotation structure and operation process of the blowers 21. The first driving member can rotate each blower 21 to a second position so that each blower 21 can blow air along the Y-axis of the vehicle, that is, each blower 21 can blow air laterally to balance the lateral force on the vehicle and prevent the vehicle from deviating from its original driving path under crosswind conditions, thereby affecting the vehicle's steering accuracy and emergency obstacle avoidance capabilities.

[0037] like Figure 1As shown, the rotating base 22 is arranged along the length of the mounting base 1. The rotating base 22 is rotatably connected to the mounting base 1 via a first rotating shaft 23, which extends along the length of the mounting base 1, meaning the rotating base 22 can rotate around the first rotating shaft 23. Multiple blower components 21 are spaced apart along the length of the rotating base 22, and each blower component 21 is connected to the rotating base 22, meaning all blower components 21 are integrated onto the rotating base 22. The first driving component is a motor. The fixed end of the first driving component is connected to the mounting base 1, and the drive shaft of the first driving component is connected to the first rotating shaft 23 to drive the rotating base 22 to rotate around the first rotating shaft 23, thereby achieving synchronous rotation of each blower component 21 around the first rotating shaft 23.

[0038] For example, when the vehicle is subjected to a leftward crosswind, that is, when the vehicle is subjected to a leftward lateral force, each blower 21 is adjusted to the second position so that each blower 21 blows air to the left, generating a leftward airflow, thereby forming a low-pressure area on the right side of the mounting base 1. According to Bernoulli's principle, this pressure difference will cause the mounting base 1 to be subjected to a rightward force. Since the mounting base 1 is connected to the vehicle, the vehicle will be subjected to a rightward thrust, thereby balancing the leftward lateral force on the vehicle.

[0039] For example, when the vehicle is subjected to a rightward crosswind, that is, when the vehicle is subjected to a rightward lateral force, each blower 21 is adjusted to the third position so that each blower 21 blows air to the right, generating a rightward airflow, thereby forming a low-pressure area on the left side of the mounting base 1. According to Bernoulli's principle, this pressure difference will cause the mounting base 1 to be subjected to a leftward force. Since the mounting base 1 is connected to the vehicle, the vehicle will be subjected to a leftward thrust, thereby balancing the rightward lateral force on the vehicle.

[0040] Furthermore, the mounting base 1 is provided with a mounting groove 11, which is provided through the height direction of the mounting base 1 and extends along the length direction of the mounting base 1. The rotating base 22 is provided in the mounting groove 11.

[0041] In the embodiments of this application, the rotating base 22 and the blower 21 are disposed within the mounting groove 11. The mounting groove 11 provides a protective space for the rotating base 22 and the blower 21, preventing damage to the rotating base 22 and the blower 21 from road debris or other external factors during vehicle operation. Furthermore, the mounting groove 11 allows the airflow from the blower 21 to be more concentrated on a specific area, improving airflow utilization and thus enhancing the adjustment effect of the downpressure device.

[0042] like Figure 1As shown, the mounting base 1 is provided with a mounting groove 11, which extends through the height of the mounting base 1, i.e., it extends vertically. The mounting groove 11 extends along the length of the mounting base 1. A rotating base 22 is disposed within the mounting groove 11. One end of the rotating base 22 is rotatably connected to the mounting base 1 via a first rotating shaft 23, and the other end of the rotating base 22 is also rotatably connected to the mounting base 1 via a first rotating shaft 23. The two first rotating shafts 23 located at both ends of the rotating base 22 are coaxially arranged. A first driving member is disposed at one end of the rotating base 22 and connected to one of the first rotating shafts 23.

[0043] Furthermore, the rotating base 22 is provided with a plurality of receiving slots 221, which are spaced apart along the length of the rotating base 22, and each blower 21 is correspondingly disposed in each receiving slot 221.

[0044] In the embodiments of this application, the installation position of the blower 21 is defined by the receiving groove 221 to achieve precise positioning of the blower 21. In addition, the receiving groove 221 enables the airflow blown by the blower 21 to act more concentratedly on a specific area, further improving the utilization rate of the airflow, thereby making the adjustment effect of the downpressure device better.

[0045] like Figure 1 As shown, the rotating base 22 is provided with a plurality of receiving slots 221, which are spaced apart along the length of the rotating base 22; wherein, one side of the receiving slot 221 is provided with an opening, the blower 21 is provided in the receiving slot 221, and the air outlet of the blower 21 is located at the opening of the receiving slot 221, so that the blower 21 can blow air out of the receiving slot 221.

[0046] Furthermore, each blower 21 is rotatably connected to the rotating seat 22 via the second rotating shaft 24. The second rotating shaft 24 is perpendicular to the first rotating shaft 23. The blower assembly 2 also includes a second driving member. The fixed end of the second driving member is connected to the rotating seat 22, and the driving end of the second driving member is connected to the second rotating shaft 24 to drive the blower 21 to rotate relative to the rotating seat 22, so that each blower 21 has a fourth position where it blows air along the X-axis of the vehicle toward the front side of the vehicle.

[0047] In the embodiments of this application, the blower 21 is rotatably connected to the rotating seat 22 via the second rotating shaft 24, so that the blower 21 can blow air toward the front of the vehicle, that is, generate a forward airflow, thereby forming a low-pressure area on the rear side of the blower 21. According to Bernoulli's principle, this pressure difference will cause the mounting seat 1 to be subjected to a rearward thrust. Since the mounting seat 1 is connected to the vehicle, the vehicle will be subjected to a rearward thrust, thereby providing additional braking force for the vehicle, shortening the braking distance of the vehicle, and reducing the wear of the braking system.

[0048] like Figure 2As shown, the blower 21 is disposed in the receiving groove 221 of the rotating base 22. The blower 21 is rotatably connected to the rotating base 22 via a second rotating shaft 24, which is perpendicular to the first rotating shaft 23. The second driving component is a motor. The fixed end of the second driving component is connected to the rotating base 22, and the driving end of the second driving component is connected to the second rotating shaft 24. Specifically, the first rotating shaft 23 extends along the X-axis of the vehicle, and the second rotating shaft 24 extends along the Y-axis of the vehicle. When the vehicle brakes, the second driving component drives the blower 21 to rotate around the second rotating shaft 24 until the air outlet of the blower 21 faces the front of the vehicle, so that the blower 21 blows air towards the front of the vehicle.

[0049] In the embodiments of this application, the blower 21 is a propeller, and the middle part of the blower 21 is connected to the third driving member through the third rotating shaft 25. The third driving member is used to drive the blower 21 to rotate around the third rotating shaft 25. The third driving member is a motor.

[0050] In other embodiments, the blower 21 may be a small blower.

[0051] Furthermore, a protective cover 26 is provided on the outside of the blower 21, and a safety gap is provided between the outer edge of the blower 21 and the inner wall of the protective cover 26.

[0052] In the embodiments of this application, the protective cover 26 protects the blower component 21, preventing foreign objects such as stones from entering the interior of the blower component 21 during operation, thus reducing the probability of damage to the blower component 21. Simultaneously, it prevents pedestrians or maintenance personnel from accidentally coming into contact with the high-speed rotating propeller, reducing the risk of personal injury. Furthermore, the protective cover 26 acts as a concentrator, making the airflow from the blower component 21 more concentrated, thereby enhancing the aerodynamic performance of the downforce device.

[0053] Furthermore, the downpressure device also includes a control component, which is electrically connected to the blower assembly 2. The control component is used to control the blowing direction of the blower 21 according to the vehicle's driving conditions.

[0054] In the embodiments of this application, the control component can adjust the blowing direction of the blower 21 in real time according to the driving conditions of the vehicle. That is, under different driving conditions, the blower component 2 can intelligently react to adjust the force on the vehicle and make the vehicle drive stably.

[0055] Specifically, the control component uses the vehicle's central control unit to monitor parameters such as vehicle speed, acceleration, lateral acceleration, and crosswind intensity in real time, and is electrically connected to the first, second, and third drive components. Based on vehicle speed, acceleration, lateral acceleration, and crosswind intensity, the control component controls the first drive component to rotate the rotating base 22 relative to the mounting base 1, and controls the blower 21 to rotate around the vehicle's X-axis, so that the blower 21 blows air vertically upwards and to the left and right. Based on vehicle speed, acceleration, lateral acceleration, and crosswind intensity, the control component controls the second drive component to rotate the blower 21 around the vehicle's Y-axis, so that the blower 21 blows air towards the front of the vehicle. Based on vehicle speed, acceleration, lateral acceleration, and crosswind intensity, the control component controls the third drive component to rotate the blower 21, thereby activating the blower assembly 2.

[0056] For example, under high-speed driving conditions, the control component controls the blower 21 to a first position and causes the blower 21 to blow air vertically upward to increase the vehicle's grip.

[0057] For example, when driving in crosswind conditions, the control component controls the blower 21 to a second or third position according to the direction of the crosswind, so that the blower 21 blows air horizontally to the left or horizontally to the right to counteract the lateral force.

[0058] For example, in the event of emergency braking, the control component controls the blower 21 to the fourth position and causes the blower 21 to blow air toward the front of the vehicle to increase the braking force of the vehicle.

[0059] According to another specific embodiment of this application, a vehicle is also provided, the vehicle including a downpressure device 100, the downpressure device 100 being the downpressure device 100 in the above embodiment.

[0060] In one exemplary embodiment of this application, such as Figure 3 As shown, a downforce device 100 is installed on both the left and right side skirts 200 of the vehicle. The downforce devices 100 are symmetrically arranged on both sides to ensure that the entire vehicle is evenly stressed.

[0061] Furthermore, the lower pressure device 100 is movably connected to the side skirt 200. The lower pressure device 100 has a storage position that flips toward the side skirt 200 so that the blower assembly 2 is located between the mounting base 1 and the side skirt 200, and a working position that flips away from the side skirt 200 so that the blower assembly 2 is exposed.

[0062] In the embodiments of this application, the downforce device 100 is movably connected to the side skirt 200, allowing for flexible adjustment to a stowed or working position depending on actual driving conditions. This not only improves the applicability and safety of the device but also optimizes the vehicle's aerodynamic performance. When the downforce device 100 is not needed, such as during low-speed driving or on urban roads, it can be flipped to a stowed position, hidden between the side skirt 200 and the mounting base 1. When the downforce device 100 is needed, it is adjusted to the working position.

[0063] Specifically, the fixed end of the fourth driving member is connected to the side skirt 200, and the driving end of the fourth driving member is connected to the mounting base 1 to drive the lower pressure device 100 to rotate relative to the side skirt 200. The fourth driving member is a motor. When the lower pressure device 100 is in the working position, the mounting groove 11 on the mounting base 1 is vertically continuous; when the lower pressure device 100 is in the retracted position, the mounting groove 11 on the mounting base 1 is horizontally continuous, and the opening of the receiving groove 221 of the rotating base 22 faces the side skirt 200.

[0064] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0065] 1) When the vehicle is traveling at high speed, the blower 21 can blow air upward along the Z-axis of the vehicle, generating an upward airflow. A low-pressure area is formed below the mounting seat 1. According to Bernoulli's principle, this pressure difference will cause the mounting seat 1 to be subjected to a downward force, which in turn will cause the vehicle to be subjected to downward pressure, improving the vehicle's grip and reducing the vehicle's lift.

[0066] 2) When the vehicle is in crosswind condition, the blower 21 can blow air along the Y-axis of the vehicle to counteract the lateral force caused by the crosswind, so that the vehicle can travel along the original path and avoid lateral movement of the vehicle.

[0067] 3) When the vehicle is braking, the blower 21 can blow air towards the front of the vehicle, generating a forward airflow, which in turn creates a low-pressure area behind the blower 21. According to Bernoulli's principle, this pressure difference will cause the mounting seat 1 to be pushed backward, which in turn will cause the vehicle to be pushed backward, thus providing additional braking force to the vehicle, shortening the braking distance of the vehicle, and reducing the wear of the braking system.

[0068] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0069] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0070] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A downforce device for a vehicle, characterized in that, include: Mounting seat (1), the mounting seat (1) is used for mounting on the side skirt (200) of the vehicle; A blower assembly (2) is connected to the mounting base (1). The blower assembly (2) includes a plurality of blower elements (21), which are distributed along the length direction of the mounting base (1). Each blower element (21) has a first position for blowing air upward along the Z-axis of the vehicle. The blower assembly (2) also includes: Rotary seat (22), the rotating seat (22) is rotatably connected to the mounting seat (1) via a first rotating shaft (23), the first rotating shaft (23) extends along the length direction of the mounting seat (1), and each of the blower components (21) is connected to the rotating seat (22); A first driving member, the fixed end of which is connected to the mounting base (1), and the driving end of which is connected to the first rotating shaft (23), to drive the rotating base (22) to rotate relative to the mounting base (1) so that each of the blowers (21) has a second position of blowing air to the left along the Y-axis of the vehicle and a third position of blowing air to the right along the Y-axis of the vehicle.

2. The downward pressure device according to claim 1, characterized in that, The mounting base (1) is provided with a mounting groove (11), which is provided through the height direction of the mounting base (1) and extends along the length direction of the mounting base (1). The rotating seat (22) is located in the mounting groove (11).

3. The downward pressure device according to claim 2, characterized in that, The rotating seat (22) is provided with a plurality of receiving slots (221), which are spaced apart along the length of the rotating seat (22), and each blower (21) is correspondingly provided in each of the receiving slots (221).

4. The downward pressure device according to claim 1, characterized in that, Each of the blower components (21) is rotatably connected to the rotating base (22) via a second rotating shaft (24), the second rotating shaft (24) being perpendicular to the first rotating shaft (23), and the blower assembly (2) further includes: The second driving member has a fixed end connected to the rotating seat (22) and a driving end connected to the second rotating shaft (24) to drive the blower (21) to rotate relative to the rotating seat (22) so that each blower (21) has a fourth position blowing air towards the front of the vehicle along the X-axis of the vehicle.

5. The downward pressure device according to any one of claims 1-4, characterized in that, The blower (21) is a propeller. The middle part of the blower (21) is connected to the third drive member through the third rotating shaft (25). The third drive member is used to drive the blower (21) to rotate around the third rotating shaft (25).

6. The downward pressure device according to claim 5, characterized in that, The blower (21) is provided with a protective cover (26) on its exterior, and a safety gap is provided between the outer edge of the blower (21) and the inner wall of the protective cover (26).

7. The downward pressure device according to claim 1, characterized in that, The lower pressure device also includes: A control component is electrically connected to the blower component (2) and is used to control the blowing direction of the blower component (21) according to the driving conditions of the vehicle.

8. A vehicle, characterized in that, The vehicle includes a downpressure device (100), which is the downpressure device (100) according to any one of claims 1 to 7.

9. The vehicle according to claim 8, characterized in that, The lower pressure device (100) is movably connected to the side skirt (200). The lower pressure device (100) has a retractable position that flips toward the side skirt (200) so that the blower assembly (2) is located between the mounting base (1) and the side skirt (200), and a working position that flips away from the side skirt (200) so that the blower assembly (2) is exposed.

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