Airflow guiding device and vehicle
By designing the linkage mechanism and unlocking mechanism of the airflow guiding device, the air deflector can be actively deployed to reduce wind resistance on straight road sections and passively retracted on uneven road surfaces. This solves the problem of interference between the wheel spoiler and obstacles, improves safety and reduces costs.
Patent Information
- Application Number
- CN202410592764.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-11-14
AI Technical Summary
Wheel spoilers can easily interfere with obstacles during driving, causing damage and affecting vehicle passability and wind resistance.
An airflow guiding device was designed, including a fixed frame, a guide plate, a drive mechanism, and a linkage mechanism. The guide plate is passively retracted when it comes into contact with an obstacle through the unlocking mechanism of the linkage mechanism, so as to avoid damage caused by hard contact with the ground. At the same time, it actively deploys on straight road sections to reduce air resistance.
It reduces air resistance when traveling at high speeds on straight roads and avoids damage on uneven surfaces, balancing wind resistance and passability, thereby improving the safety of the device and reducing costs.
Smart Images
Figure CN120942433A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle technology, specifically to an airflow guiding device and a vehicle. Background Technology
[0002] Wheel spoilers are a well-known feature in automobile manufacturing. Spoilers are used to reduce air resistance in the area in front of a vehicle's front wheels.
[0003] Wheel spoilers are located in the front area of a motor vehicle, extending along most of the vehicle's width, on the lower side of the body. When the vehicle is in motion, the rear end of the wheel spoiler flips down and opens, with its front facing forward, partially obscuring the wheels. Airflow is guided by the spoiler's front surface, bypassing the wheels and reducing air resistance in front of them. However, when the vehicle encounters obstacles, the lower ground clearance after the wheel spoiler is engaged makes it prone to interference, potentially damaging the spoiler and affecting the vehicle's passability. Summary of the Invention
[0004] To solve, or at least partially solve, the above-mentioned technical problems, this application provides an airflow guiding device and a vehicle.
[0005] The first aspect of this application provides an airflow guiding device, including a fixed frame, an air guide plate, a fixing component, a drive mechanism, and a linkage mechanism. The fixed frame is provided with mounting points for fixing to a vehicle chassis, and the fixed frame is also provided with mounting openings.
[0006] The air guide plate is located at the mounting port, the fixing member is connected between the air guide plate and the vehicle chassis, the connecting rod mechanism is located in front of or behind the fixing member, and one end of the connecting rod mechanism is connected to the driving mechanism and the other end is connected to the air guide plate. The driving mechanism is fixedly connected to the vehicle chassis.
[0007] The linkage mechanism is connected between the drive mechanism and the air guide plate. The unlocking mechanism is disposed on the linkage mechanism. When the unlocking mechanism is subjected to external force, it drives the linkage mechanism to move from the locked state to the unlocked state. When the linkage mechanism is in the locked state, the drive mechanism drives the air guide plate to open.
[0008] Optionally, the linkage mechanism includes a first link and a second link, and the first link and the second link are connected by an unlocking mechanism. The unlocking mechanism includes a slide groove, a first connecting shaft and an elastic limiting member. The first connecting shaft is disposed on the first link, the slide groove is disposed on the second link, and the first connecting shaft is slidably inserted into one end of the slide groove. The elastic limiting member abuts against the first connecting shaft.
[0009] Optionally, the first connecting rod is connected to the drive mechanism, and the second connecting rod is connected to the air guide plate.
[0010] Optionally, the slide groove is arc-shaped, with its center located at the connection between the air guide plate and the fixing member, and the length direction of the slide groove forming an angle with the length direction of the second connecting rod.
[0011] Optionally, one end of the elastic limiting member is fixedly connected to the second connecting rod, and the other end forms a bent portion. The outer coating of the bent portion extends into the groove and abuts against the first connecting shaft.
[0012] Optionally, the inner surface of the air guide plate is provided with a first support and a first rotating shaft. The first rotating shaft is arranged along the width direction of the air guide plate and is fixedly connected to the first support. The end of the second connecting rod away from the first connecting rod is rotatably sleeved on the first rotating shaft.
[0013] Optionally, the outer surface of the air guide plate is a downwardly concave arc-shaped surface, and the lower surface of the air guide plate is a smooth surface.
[0014] Optionally, a second support and a second rotating shaft are provided on the inner surface of the air guide plate. The second rotating shaft is arranged along the width direction of the air guide plate and is fixedly connected to the second support. The fixing member is rotatably sleeved on the second rotating shaft, and the air guide plate makes a circular motion with the second rotating shaft as the rotation center.
[0015] Optionally, the driving mechanism is a motor, and the output shaft of the motor is arranged along the width direction of the air guide plate.
[0016] Optionally, the width of the air guide plate gradually increases from the front end to the rear end, and the projection of the air guide plate on the first plane includes a parabolic segment and an arc segment. The arc segment is arranged along the width direction of the vehicle chassis, the parabolic segment is located in front of the arc segment, and the two ends of the parabolic segment are connected to the two ends of the arc segment respectively; the first plane is a plane parallel to the vehicle chassis.
[0017] Optionally, the inflection point of the parabola segment is located in front of both ends of the parabola segment, and the apex of the arc segment is located in front of both ends of the second arc segment.
[0018] Optionally, the fixing frame is provided with a spoiler in front of the mounting port, and the spoiler is located below the fixing frame.
[0019] A second aspect of this application provides a vehicle including any of the airflow guiding devices described above, the airflow guiding devices being mounted in front of the wheels of the vehicle.
[0020] The airflow guiding device provided in this application has the following advantages compared with the prior art:
[0021] The airflow guiding device provided in this application embodiment, when the vehicle is traveling at high speed on a straight road, has its linkage mechanism in a locked state. The drive mechanism drives the linkage mechanism to move, thereby rotating the air guide plate and opening it to reduce air resistance in front of the wheels. When encountering an uneven road section, the air guide plate contacts an obstacle on the ground. Under the thrust of the obstacle, the unlocking structure drives the linkage mechanism from the locked state to the unlocked state. The force transmission function of the linkage mechanism disappears, and the external force on the air guide plate cannot be transmitted to the drive mechanism through the linkage mechanism. The air guide plate is not constrained by the linkage mechanism and is in a free state. Therefore, when the air guide plate is subjected to a force from the ground, it can rotate in the retracted state to achieve passive retraction. It will not cause damage to the air guide plate, linkage mechanism, and drive mechanism due to hard contact with the ground. This airflow guiding device can be deployed when driving at high speed on straight roads to reduce wind resistance in front of the wheels; on uneven roads, it retracts passively when in contact with the ground, without causing damage to the airflow guiding device. It balances the requirements of both drag coefficient and vehicle passability, improving the safety of the airflow guiding device and reducing costs. Attached Figure Description
[0022] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.
[0023] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the airflow guiding device described in an embodiment of this disclosure;
[0025] Figure 2 This is a schematic diagram of the airflow guiding device described in the embodiment of this disclosure in the state of the air guide plate being retracted;
[0026] Figure 3 This is a schematic diagram of the airflow guiding device described in the embodiment of this disclosure with the air guide plate deployed.
[0027] Figure 4 This is a schematic diagram of the airflow guiding device described in the embodiments of this disclosure when the air guide plate is passively retracted;
[0028] Figure 5This is a schematic diagram of the structure of the spoiler described in an embodiment of this disclosure.
[0029] Among them, 1. Fixed frame; 11. Spoiler; 101. Chassis underbody protection plate mounting point; 102. Front bumper underbody protection plate mounting point; 103. Front bumper mounting point; 2. Drive mechanism; 3. Fixing component; 31. Fixing plate; 32. Connecting lug; 4. Linkage mechanism; 41. First link; 42. Second link; 43. First connecting shaft; 44. Slide groove; 45. Elastic limiting component; 5. First rotating shaft; 6. Second rotating shaft; 7. Air guide plate; 71. Inner plate; 72. Outer plate. Detailed Implementation
[0030] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this application, but this application can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.
[0031] like Figures 1 to 5 As shown, this application embodiment provides an airflow guiding device, which is installed in front of the vehicle wheels to reduce air resistance in front of the wheels. Specifically, the airflow guiding device provided in this application embodiment includes a fixed frame 1, a guide plate 7, a drive mechanism 2, and a linkage mechanism 4. The fixed frame 1 is provided with mounting points for fixing to the vehicle chassis. The fixed frame 1 is fixed to the vehicle in a ready state, and the fixed frame 1 is provided with a mounting opening. The guide plate 7 is installed at the mounting opening. A fixing member 3 connects the guide plate 7 and the vehicle chassis. The linkage mechanism is located in front of or behind the fixing member 3, and one end of the linkage mechanism is connected to the drive mechanism, and the other end is connected to the guide plate 7. The connecting and fixing parts 3 and the drive mechanism 2 are all fixed to the vehicle chassis. The drive mechanism 2 drives the linkage mechanism 4 to move, thereby driving the air guide plate 7 to switch between the retracted state and the deployed state. In the retracted state, the air guide plate 7 is fitted into the mounting port, and the fixing frame 1 is along the closed circumferential track, so that the air guide plate 7 is protected by the fixing frame 1 in the retracted state. In the deployed state, the air guide plate 7 is tilted, and the windward surface (outer surface of the air guide plate 7) of the air guide plate 7 faces the direction of vehicle travel to disperse the airflow in front of the wheels.
[0032] Linkage mechanism 4 is connected between drive mechanism 2 and air guide plate 7. Unlocking mechanism is set on linkage mechanism 4. When the unlocking mechanism is subjected to external force, it drives linkage mechanism 4 from locked state to unlocked state. When linkage mechanism 4 is locked, drive mechanism 2 to open air guide plate 7.
[0033] On straight road sections, during high-speed vehicle travel, linkage mechanism 4 is in a locked state. Drive mechanism 2 drives linkage mechanism 4 to move, thereby rotating air guide plate 7 and opening it to reduce air resistance in front of the wheels. When encountering uneven road sections, air guide plate 7 comes into contact with obstacles on the ground. Under the thrust of the obstacles, the unlocking structure drives linkage mechanism 4 from the locked state to the unlocked state. The force transmission function of linkage mechanism 4 disappears, and the external force on air guide plate 7 cannot be transmitted to drive mechanism 2 through linkage mechanism 4. Air guide plate 7 is not constrained by linkage mechanism 4 and is in a free state. Therefore, when air guide plate 7 is subjected to force from the ground, air guide plate 7 can rotate in the retracted state to achieve passive retraction. It will not cause damage to air guide plate 7, linkage mechanism 4, and drive mechanism 2 due to hard contact with the ground. This airflow guiding device can be deployed when driving at high speed on straight roads to reduce wind resistance in front of the wheels; on uneven roads, it retracts passively when in contact with the ground, without causing damage to the airflow guiding device. It balances the requirements of both drag coefficient and vehicle passability, improving the safety of the airflow guiding device and reducing costs.
[0034] Specifically, the mounting points on the fixed frame 1 include a chassis underbody mounting point 101 located at the rear end, a front bumper underbody mounting point 102 located in the middle, and a front bumper mounting point 103 located at the front end; the linkage mechanism 4 includes a first link 41 and a second link 42, which are connected by an unlocking mechanism. The unlocking mechanism includes a slide groove 44, a first connecting shaft 43, and an elastic limiting member 45. The first connecting shaft 43 is disposed on the first link 41, the slide groove 44 is disposed on the second link 42, and the first connecting shaft 41 is slidably inserted into one end of the slide groove 44. The elastic limiting member 45 abuts against the first connecting shaft 41, locking the first connecting shaft 41 in the slide groove 44.
[0035] The first end of the first connecting rod 41 is connected to the output shaft of the drive mechanism 2. The second end of the first connecting rod 41 is provided with a first connecting shaft 43, which is set perpendicular to the first connecting rod 41. The first end of the second connecting rod 42 is rotatably connected to the air guide plate 7. The second end of the second connecting rod 42 is provided with a slide groove 44. The first connecting shaft 43 is slidably inserted into the slide groove 44. The second connecting rod 42 is provided with an elastic limiting member 45, which abuts against the first connecting shaft 43, locking the first connecting shaft 43 at the first end of the slide groove 44. When the elastic limiting member 45 is subjected to external force, it undergoes elastic deformation, unlocking the first connecting shaft 43, which can then slide within the slide groove 44.
[0036] Specifically, when the first end of the slide 44 is above the second end, and the first connecting shaft 43 is at the first end of the slide 44, the elastic limiting member 45 abuts against the lower or side-lower part of the first connecting shaft 43 from one side, locking the first connecting shaft 43 at the first end of the slide 44. At this time, the first connecting rod 41 and the second connecting rod 42 are in a locked state. When the first connecting rod 41 rotates, it will simultaneously drive the second connecting rod 42 to rotate. Therefore, when the output shaft of the drive mechanism 2 rotates, it can drive the air guide plate 7 to actively unfold and actively retract by driving the movement of the first connecting rod 41 and the second connecting rod 42.
[0037] When the air guide plate 7 is subjected to external force during driving, its rear end rotates upward, thereby driving the second connecting rod 42 to move upward. During this process, the first connecting shaft 43 continuously squeezes the elastic limiting member 45, causing the elastic limiting member 45 to deform. The first connecting shaft 43 then disengages from the first end of the slide groove 44 and slides from the first end to the second end of the slide groove 44. The mutual constraint between the first connecting rod 41 and the second connecting rod 42 disappears. During the rotation of the air guide plate 7 under external force, the force will not be transmitted to the drive mechanism 2 due to the mutual locking of the first connecting rod 41 and the second connecting rod 42. This avoids damage to the air guide plate 7, drive mechanism 2, and linkage mechanism 4 under external force, and allows for the passive retraction of the air guide plate 7. This airflow guiding device can be deployed at high speed on straight roads to reduce wind resistance in front of the wheels. On uneven roads, it is passively retracted when in contact with the ground, preventing damage to the airflow guiding device. It balances the requirements of wind resistance coefficient and vehicle passability, improving the safety of the airflow guiding device and reducing costs.
[0038] like Figures 2 to 4 As shown, A represents the rotation path of the air guide plate, B represents the rotation path of the first link, and C represents the passive recovery path of the air guide plate when it is impacted by an external force.
[0039] Furthermore, in some embodiments of this application, the slide groove 44 is arc-shaped, the center of the arc where the slide groove 44 is located is at the hinge of the air guide plate 7 and the fixing member 3, and the length direction of the slide groove 44 is set at an angle to the length direction of the second connecting rod 42.
[0040] Specifically, when the air guide plate 7 rotates, its rotation center is the hinge point between the fixing member 3 and the air guide plate 7. The first connecting rod 41 and the second connecting rod 42 rotate with the air guide plate 7, and their rotation center is also the hinge point between the fixing member 3 and the air guide plate 7. Therefore, the shape of the slide groove 44 is set as an arc, with its center located at the hinge point between the air guide plate 7 and the fixing member 3. The length direction of the slide groove 44 is set at an angle to the length direction of the second connecting rod 42, so that the rotation trajectories of the slide groove 44 and the second connecting rod 42 coincide. This facilitates the sliding of the first connecting shaft 43 within the slide groove 44, conforming to mechanical properties. Specifically, the size of the angle between the length direction of the slide groove 44 and the length direction of the second connecting rod 42 depends on the required unfolding height of the air guide plate 7, that is, the distance between the lower end of the air guide plate 7 and the vehicle chassis when unfolded.
[0041] Furthermore, in some embodiments of this application, the elastic limiting member 45 can be integrally formed with the second connecting rod 42, or it can be a separate design from the second connecting rod 42, and can be welded or embedded in the second connecting rod 42. When the elastic limiting member 45 is not subjected to external force, it partially extends into the first end of the slide groove 44, locking the first connecting shaft 43 located in the first end of the slide groove 44 at the first end of the slide groove 44. The force of the elastic limiting member 45 on the first connecting shaft 43 is upward or obliquely upward. When subjected to external force, the first connecting shaft 43 can overcome the force of the elastic limiting member 45 and slide out from the first end of the slide groove 44, get rid of the constraint of the elastic limiting member 45, and slide in the slide groove 44. When the first connecting shaft 43 slides out from the first end and gets rid of the constraint of the elastic limiting member 45, the mutual constraint between the first connecting rod 41 and the second connecting rod 42 disappears, allowing the air guide plate 7 to be passively retracted when subjected to external force.
[0042] Specifically, one end of the elastic limiting member 45 is fixedly connected to the second connecting rod 42, and the other end forms a bent portion. The outer surface of the bent portion extends into the slide groove 44, locking the first connecting shaft 43 located in the slide groove 44. The bent portion is V-shaped, and the outer convex surface of the tip of the V-shaped bent portion extends into the slide groove 44 and abuts against the first connecting shaft 43. When subjected to external force, the first connecting shaft 43 squeezes the elastic limiting member 45, which can overcome the force of the elastic limiting member 45, break free from the restriction of the elastic limiting member 45, and slide out from the first end of the slide groove 44. Alternatively, it can squeeze the elastic limiting member 45 to deform and slide into the first end of the slide groove 44.
[0043] Furthermore, in some embodiments of this application, the inner surface of the air guide plate 7 is provided with a first support and a first rotating shaft 5. There are two first supports, spaced apart along the width direction of the air guide plate 7. Both ends of the first rotating shaft 5 are fixedly connected to the two first supports respectively. The first end of the second connecting rod 42 is rotatably sleeved on the first rotating shaft 5. Specifically, the first end of the second connecting rod 42 is provided with a first mounting hole. The second connecting rod 42 is sleeved on the first rotating shaft 5 through the first mounting hole and rotatably connected to the first rotating shaft 5. The second end of the second connecting rod 42 is arranged in a "V" shape and is located at the second end of the second connecting rod 42. In embodiments of this application, the first connecting rod 41 is hinged to the air guide plate 7 by rotatably connecting to the first rotating shaft 5, thereby improving the stability of the connection structure between the linkage mechanism 4 and the air guide plate 7.
[0044] Furthermore, in some embodiments of this application, the outer surface of the air guide plate 7 is a downwardly concave arc-shaped surface, and the outer surface of the air guide plate 7 is a smooth surface. In the retraction state, the outer surface of the air guide plate 7 still protrudes downward from the mounting opening, and as the windward surface, the outer surface of the air guide plate 7 can still play a certain role in guiding airflow in the retraction state.
[0045] Specifically, since the inner surface of the air guide plate 7 is provided with hinge points connected to the fixed plate 31 and the first rotating shaft 5 connected to the linkage mechanism 4, the resulting outer surface is prone to being uneven. Therefore, in some embodiments of this application, the air guide plate 7 is configured as a two-layer plate structure, with the two layers stacked. The inner surface of the inner plate 71 is provided with hinge points connected to the fixed plate 31 and the first rotating shaft 5 connected to the linkage mechanism 4. The outer plate 72 wraps around the inner plate 71, covering the uneven structure on the inner plate 71 and forming a smooth outer surface.
[0046] Furthermore, in some embodiments of this application, the inner surface of the air guide plate 7 is provided with a second support and a second rotating shaft 6. There are two second supports, which are spaced apart along the width direction of the air guide plate 7. The two ends of the second rotating shaft 6 are respectively fixedly connected to the second supports. The fixing member 3 includes a fixing plate 31 and a connecting lug 32 provided below the fixing plate 31. The fixing plate 31 is used to fix it to the vehicle chassis. The connecting lug 32 is rotatably sleeved on the second rotating shaft 6. The air guide plate 7 swings with the second rotating shaft 6 as the rotation center.
[0047] Specifically, the second support is set at the front end of the air guide plate 7, the second rotating shaft 6 is set along the width direction of the air guide plate 7, and there are two connecting ears 32. The two connecting ears 32 are respectively fitted to the two second supports. The second rotating shaft 6 passes through the second support and the connecting ears 32 in sequence, and the second rotating shaft 6 is fixedly connected to the connecting ears 32. The second rotating shaft 6 is rotatably connected to the second support. When the air guide plate 7 receives the force applied by the linkage mechanism 4 or the action of external force, the air guide plate 7 swings around the second rotating shaft 6 as the rotation center.
[0048] Furthermore, in some embodiments of this application, the drive mechanism 2 is a motor, and the output shaft of the motor is arranged along the width direction of the air guide plate 7. Specifically, the drive motor is a stepper motor, and the rotation angle of the stepper motor is set to different levels to realize different deployment angles of the air guide plate 7 under different road conditions, thereby realizing an ultimate wind resistance system, that is, achieving a good wind resistance reduction effect under various road conditions.
[0049] Furthermore, in some embodiments of this application, the width of the air guide plate 7 gradually increases from the front end to the rear end, and the projection of the air guide plate 7 on the first plane includes a parabolic segment and an arc segment. The arc segment is arranged along the width direction of the vehicle chassis, and the parabolic segment is located in front of the arc segment, with the two ends of the parabolic segment connected to the two ends of the arc segment respectively. The first plane is a plane parallel to the vehicle chassis. The inflection point of the parabola is located in front of the two ends of the parabola, and the apex of the arc plate is also located in front of the two ends of the arc segment. Thus, both the parabolic segment and the arc segment are forward-convex, and the width of the parabolic segment gradually increases from the front end to the rear end. The width of the rear end of the parabolic segment, which is the distance between the two ends of the parabolic segment, reaches its maximum. This design can disperse the airflow in front of the wheel from the center to both sides, reducing the wind resistance in front of the wheel.
[0050] Furthermore, in some embodiments of this application, a spoiler 11 is provided at the mounting opening of the fixed frame 1. The spoiler 11 is located below the fixed frame 1 and is arranged corresponding to the parabolic segment. Specifically, the spoiler 11 is located on the windward side of the guide plate. The shape of the projection of the spoiler 11 on the first inner surface is consistent with the shape of the parabolic segment and is located outside the parabolic segment. When the guide plate 7 is in the retracted state, the spoiler 11 blocks the installation gap between the guide plate 7 and the fixed frame 1. The spoiler 11 mainly serves to guide the airflow, preventing the airflow from forming vortices at the gap between the front end of the guide plate 7 and the fixed frame 1, and directing the airflow at the front end of the guide plate 7 to flow out in the direction following the contour of the spoiler 11, further improving the effect of reducing wind resistance.
[0051] Furthermore, in some embodiments of this application, a controller is also included. The controller can control the operation of the drive motor. When the air guide plate 7 is subjected to external force, the second link 42 disengages from the first link 41, and the torque of the first link 41 drops to zero. After the controller recognizes this information, it will actively start the first link 41 and rotate it along the air guide plate 7 to the retracted state. During this period, under the action of the first link 41, the second end of the second link 42 returns to the first end of the slide groove 44 and continues to be abutted and locked by the elastic limiting member 45, and then re-deployed or retracted as needed.
[0052] Furthermore, some embodiments of this application also provide a vehicle, which can be a fuel-powered vehicle, an electric vehicle, or a hybrid vehicle; the vehicle includes the airflow guiding device described in the above embodiments, which is installed in front of the vehicle's wheels. On straight roads, when the vehicle is traveling at high speed, the drive mechanism 2 can move the linkage mechanism, thereby actively deploying the air guide plate 7. When road conditions are poor and the vehicle chassis is low to the ground, the drive mechanism 2 can move the linkage mechanism 4, actively retracting the air guide plate 7. Alternatively, the rotation angle of the air guide plate 7 can be controlled by adjusting the rotation angle of the drive mechanism 2 according to specific road conditions, meeting the wind resistance reduction requirements of different road conditions. Simultaneously, when the vehicle's ground clearance is insufficient, if a road obstacle touches the deployed air guide plate 7, the second linkage mechanism 42 disengages from the first linkage mechanism 41 at the connection point. After being subjected to external force from the road obstacle, the air guide plate 7 can be passively retracted without damaging the air guide plate 7, linkage mechanism 4, or drive mechanism 2, thus improving the safety of the airflow guiding device during use.
[0053] In summary, the airflow guiding device provided in this embodiment is installed in front of the wheel. The elastic limiting member 45 fixes the relative positions of the second link 42 and the first link 41, thus fixing the initial position (i.e., the retracted state) of the air guide plate 7. When the air guide plate 7 is in its initial position, the spoiler 11 located in front of it blocks the flow between the air guide plate 7 and the fixed frame 1, preventing the airflow from forming vortices in the gap between the fixed frame 1 and the air guide plate 7, thereby creating a guiding effect. When the drive mechanism 2 is activated, the first link 41 rotates, causing the second link 42 to rotate along the rotation path of the air guide plate 7, thus transferring the torque... The force is transmitted to the air guide plate 7, which rotates around the second rotating shaft 6, ultimately achieving the unfolding action. When the air guide plate 7 is subjected to external force in its unfolded posture, it transmits the torque around the second rotating shaft 6 to the second connecting rod 42. The second connecting rod 42 moves along the passive retraction path of the air guide plate 7, during which it breaks free from the restriction of the elastic limiting member 45, protecting the air guide plate 7 from damage and preventing the drive mechanism 2 from being damaged due to overload. After the second connecting rod 42 breaks free from the restriction of the elastic limiting member 45, the torque of the first connecting rod 41 drops to zero. After the controller recognizes this information, it will activate the first connecting rod 41 to retract the air guide plate 7 to the initial position along the active rotation path. This airflow guiding device can unfold when driving at high speed on straight roads, reducing wind resistance in front of the wheels. On uneven roads, when it comes into contact with the ground, it is passively retracted without causing damage to the airflow guiding device. It balances the requirements of both wind resistance coefficient and vehicle passability, improving the safety of the airflow guiding device and reducing costs.
[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. An airflow guiding device, installed at the wheel of a vehicle, characterized in that, It includes a fixed frame, an air guide plate, fasteners, a drive mechanism, a linkage mechanism, and an unlocking mechanism. The fixed frame is provided with mounting points for fixing to the vehicle chassis, and the fixed frame is also provided with mounting openings. The air guide plate is located at the mounting port, the fixing member is connected between the air guide plate and the vehicle chassis, the connecting rod mechanism is located in front of or behind the fixing member, one end of the connecting rod mechanism is connected to the drive mechanism, and the other end is connected to the air guide plate, and the drive mechanism is fixedly connected to the vehicle chassis. The linkage mechanism is connected between the drive mechanism and the air guide plate. The unlocking mechanism is disposed on the linkage mechanism. When the unlocking mechanism is subjected to external force, it drives the linkage mechanism to move from the locked state to the unlocked state. When the linkage mechanism is in the locked state, the drive mechanism drives the air guide plate to open.
2. The airflow guiding device according to claim 1, characterized in that, The linkage mechanism includes a first link and a second link, which are connected by the unlocking mechanism. The unlocking mechanism includes a slide groove, a first connecting shaft, and an elastic limiting member. The first connecting shaft is disposed on the first link, the slide groove is disposed on the second link, and the first connecting shaft is slidably inserted into one end of the slide groove. The elastic limiting member abuts against the first connecting shaft.
3. The airflow guiding device according to claim 2, characterized in that, The first connecting rod is connected to the drive mechanism, and the second connecting rod is connected to the air guide plate.
4. The airflow guiding device as described in claim 2, characterized in that, The chute is arc-shaped, with its center located at the connection between the air guide plate and the fixing member. The length direction of the chute forms an angle with the length direction of the second connecting rod.
5. The airflow guiding device as described in claim 3, characterized in that, One end of the elastic limiting member is fixedly connected to the second connecting rod, and the other end forms a bent portion. The outer convex surface of the bent portion extends into the sliding groove and abuts against the first connecting shaft.
6. The airflow guiding device as described in claim 2, characterized in that, The inner surface of the air guide plate is provided with a first support and a first rotating shaft. The first rotating shaft is arranged along the width direction of the air guide plate and is fixedly connected to the first support. The end of the second connecting rod away from the first connecting rod is rotatably sleeved on the first rotating shaft.
7. The airflow guiding device as claimed in claim 1, characterized in that, The outer surface of the air guide plate is a downwardly concave arc-shaped surface, and the outer surface of the air guide plate is a smooth surface.
8. The airflow guiding device as claimed in claim 1, characterized in that, The inner surface of the air guide plate is provided with a second support and a second rotating shaft. The second rotating shaft is arranged along the width direction of the air guide plate and is fixedly connected to the second support. The fixing member is rotatably sleeved on the second rotating shaft, and the air guide plate swings about the second rotating shaft as the rotation center.
9. The airflow guiding device as claimed in claim 1, characterized in that, The width of the air guide plate gradually increases from the front end to the rear end, and the projection of the air guide plate on the first plane includes a parabolic segment and an arc segment. The arc segment is arranged along the width direction of the vehicle chassis, the parabola is located in front of the arc segment, and the two ends of the parabolic segment are connected to the two ends of the arc segment respectively; the first plane is a plane parallel to the vehicle chassis.
10. The airflow guiding device according to claim 9, characterized in that, The inflection point of the parabola segment is located in front of both ends of the parabola segment, and the apex of the arc segment is located in front of both ends of the arc segment.
11. The airflow guiding device as claimed in claim 1, characterized in that, The fixed frame is provided with a spoiler in front of the mounting port, and the spoiler is located below the fixed frame.
12. A vehicle, characterized in that, Includes an airflow guiding device as described in any one of claims 1 to 10, wherein the airflow guiding device is mounted in front of the wheels of the vehicle.