Commercial vehicle body flow guide structure and commercial vehicle

Abstract

The utility model provides a commercial vehicle body flow guide structure and a commercial vehicle, and belongs to the technical field of commercial vehicles, and the commercial vehicle body flow guide structure comprises a first flow guide part and a second flow guide part which are arranged at the side part of a cab, and a driving mechanism arranged between the first flow guide part and the second flow guide part. The first flow guide part and the second flow guide part extend towards the rear portion of the cab, the second flow guide part is driven by the driving mechanism to be switched between a first state and a second state, in the first state, the second flow guide part is spliced to the lower portion of the second flow guide part and can shield vehicle parts, and in the second state, the second flow guide part is spliced to the lower portion of the second flow guide part. And the second flow guide piece moves upwards to the outer side of the first flow guide piece, and the vehicle part is exposed. According to the commercial vehicle body flow guide structure, in the running process of the vehicle, the first flow guide piece and the second flow guide piece spliced to the lower portion of the first flow guide piece can form a complete flow guide appearance, and wind resistance can be effectively reduced. And after the second flow guide part is switched to the second state, the vehicle part is exposed, so that the vehicle part can be conveniently operated.

Description

Technical Field

[0001] This utility model relates to the field of commercial vehicle technology, and in particular to a commercial vehicle body airflow guide structure. This utility model also relates to a commercial vehicle equipped with the commercial vehicle body airflow guide structure. Background Technology

[0002] Because commercial vehicles consume a significant amount of energy due to air resistance at high speeds, a fairing is installed behind the cab to reduce airflow separation and vortex generation, thereby lowering the drag coefficient. To optimize space utilization and improve system integration, the urea tank is often located behind the fairing. However, due to imperfections in the fairing's design, filling the urea tank requires operators to maneuver around the fairing or work in confined spaces, making the process extremely inconvenient. This not only wastes considerable time and effort but also increases the risk of inaccurate or spilled urea filling due to operational limitations, affecting the normal operation of the vehicle's exhaust treatment system.

[0003] In addition, for pure electric commercial vehicles, the charging port is generally located behind the fairing. However, due to the imperfect design of the fairing structure, the operator's hand space is severely restricted when plugging in the charging gun, which not only makes the operation difficult but also easily causes fatigue, greatly affecting human-machine comfort. Utility Model Content

[0004] In view of this, the present invention aims to provide a commercial vehicle body airflow guide structure to facilitate the operation of its rear-side components.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A commercial vehicle body airflow guiding structure includes a first airflow guide and a second airflow guide disposed on the side of the cab, and a drive mechanism disposed between the first airflow guide and the second airflow guide;

[0007] Both the first and second air guides extend toward the rear of the cab, and the second air guide is driven by the drive mechanism to switch between a first state and a second state. In the first state, the second air guide is attached below the first air guide and can cover the vehicle components. In the second state, the second air guide moves upward to the outside of the first air guide and exposes the vehicle components.

[0008] Furthermore, the first guide vane is provided with a mounting seat, and the first guide vane is mounted on the cab via the mounting seat;

[0009] The drive mechanism includes a drive unit disposed on the mounting base and a connecting rod assembly disposed between the drive unit and the second guide member.

[0010] Furthermore, the linkage assembly includes an active linkage and a driven linkage disposed between the second guide member and the mounting base, and the active linkage, the driven linkage, the second guide member, and the mounting base are connected to form a parallelogram linkage mechanism;

[0011] The active linkage is connected to the drive unit via a transmission assembly.

[0012] Furthermore, the driving unit includes a drive motor disposed on the mounting base;

[0013] The transmission assembly includes a transmission shaft rotatably mounted on the mounting base, and a gear pair disposed between the transmission shaft and the drive shaft of the drive motor, wherein the drive linkage is connected to the transmission shaft.

[0014] Furthermore, an assisting element is provided between the mounting base and the active linkage, the assisting element being used to push the second guide member to switch from the first state to the second state.

[0015] Furthermore, the assisting element is a gas spring hinged to the mounting base, and the piston rod of the gas spring is hinged to the active connecting rod.

[0016] The cylinder of the gas spring has a dust cover at one end where the piston rod extends. The dust cover is fitted over the piston rod and abuts against the piston rod.

[0017] Furthermore, the mounting base is provided with a limiting member protruding outward from the vehicle side;

[0018] The limiting member can abut against the second guide member in the first state to limit the displacement of the second guide member towards the inside of the vehicle.

[0019] Furthermore, the mounting base extends along the front-rear direction of the vehicle and a support rod is provided between the rear end of the mounting base and the cab.

[0020] Furthermore, the bottom of the first guide member is provided with a downwardly extending portion;

[0021] The extension portion is recessed relative to the outer surface of the first guide member, and the extension portion is located on the rear side of the second guide member.

[0022] Compared with the prior art, this utility model has the following advantages:

[0023] The commercial vehicle body airflow guiding structure of this utility model allows the second airflow guide to switch between a first state and a second state via a driving mechanism. In the second state, the second airflow guide moves upward to the outside of the first airflow guide, exposing the vehicle components. Therefore, during vehicle operation, the first airflow guide and the second airflow guide attached below form a complete airflow guiding shape, effectively reducing wind resistance, energy consumption, and improving driving stability. After the second airflow guide switches to the second state, the vehicle components are exposed, allowing operators to easily work on them, significantly saving operation time and reducing labor intensity.

[0024] In addition, by setting a mounting seat on the first guide vane to connect to the cab, compared with the simple direct attachment connection method, the mounting seat has better structural strength, thereby improving the installation stability of the first guide vane; and by integrating the drive unit into the mounting seat, the strong structural strength of the mounting seat can be used to improve the installation firmness of the drive unit, which can better drive the movement of the second guide vane, thus improving the action response speed and accuracy of the second guide vane.

[0025] By connecting the active link, the driven link, the second guide member, and the mounting base to form a parallelogram linkage mechanism, it is possible to ensure that the second guide member moves smoothly during the motion. When the second guide member switches between the first and second states, there will be no problems such as shaking, jamming, or angular deviation, making the entire motion process smooth and fluid. Moreover, the parallelogram linkage mechanism has a compact structure, occupies little space, and can avoid interference with other components.

[0026] Secondly, by mounting the drive motor on the mounting base, the good structural strength and stability of the mounting base can ensure that the drive motor remains stable during operation, minimizing power transmission deviation. The transmission components, including the drive shaft and gear pair, can effectively reduce vibration and impact during power transmission, achieving smooth power transmission. This helps to avoid vibration or jamming of the second guide component, thus improving the operational stability and reliability of the second guide component.

[0027] By setting up an assisting element, additional thrust can be provided when the switching action is initiated, making it easier for the second guide to switch states. Moreover, when operating manually, with the assistance of the assisting element, the second guide can easily move upward to the outside of the first guide, which can greatly reduce the difficulty of operation and save the operator's physical strength.

[0028] The power assist element uses a gas spring. Compared with other power assist methods, the gas spring output force is more uniform and will not cause excessive instantaneous impact or unstable power assist. This helps to ensure that the second guide component moves smoothly and steadily upward. By setting a dust cover, dust on the piston rod can be cleaned during the extension and retraction of the piston rod, which can effectively prevent dust accumulation on the piston rod surface from causing movement jamming.

[0029] Furthermore, by setting a limiting member on the mounting base that abuts against the second guide member in the first state, the positional displacement of the second guide member caused by changes in operating conditions such as vehicle bumps, acceleration, and deceleration can be prevented. This ensures that the second guide member and the first guide member work together to guide the airflow, allowing the airflow to bypass the vehicle body along a predetermined path, which helps ensure that the guide structure continues to play a good role in reducing wind resistance.

[0030] In addition, by extending the mounting base along the front-rear direction of the vehicle, the contact area between the mounting base and the first air guide can be increased, which helps to ensure the stability of the first air guide. Furthermore, by adding a support rod between the rear end of the mounting base and the cab, the fixing effect of the mounting base can be further strengthened, which significantly enhances the stability of the entire air guide structure in the longitudinal direction of the vehicle, ensuring that the air guide structure is firmly fixed to the side of the cab and plays its air guide role.

[0031] By providing an extension at the lower part of the first air guide, a foundation can be provided for the installation of the mounting base, allowing it to be installed in a more concealed manner, avoiding an obtrusive exposure of the installation structure, thus ensuring the overall aesthetics of the first air guide and the entire vehicle body airflow structure. Simultaneously, it can also conceal the gap between the first and second air guides, effectively maintaining the smoothness of airflow along the sides of the vehicle body, reducing turbulence, lowering the drag coefficient, and consequently reducing energy consumption.

[0032] In addition, another objective of this utility model is to provide a commercial vehicle, wherein the commercial vehicle is provided with the commercial vehicle body airflow structure as described above.

[0033] The commercial vehicle described in this utility model, by setting the commercial vehicle body airflow guiding structure as described above, allows the first airflow guide and the second airflow guide spliced ​​below to form a complete airflow guiding shape during vehicle operation, effectively reducing wind resistance, lowering energy consumption, and improving driving stability, thus meeting the needs of high-speed long-distance transportation. When it is necessary to operate the vehicle components behind, the second airflow guide can move upward to make room for operation. Therefore, it can ensure the effective functioning of the airflow guiding function without affecting the convenience of daily maintenance of vehicle components. Attached Figure Description

[0034] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0035] Figure 1 This is a schematic diagram of the commercial vehicle body airflow guiding structure described in this embodiment of the utility model, where the second airflow guide is in a first state;

[0036] Figure 2 for Figure 1 A schematic diagram of the structure shown from another perspective;

[0037] Figure 3 This is a schematic diagram of the commercial vehicle body airflow guiding structure described in this embodiment of the present invention, showing the second airflow guiding component in a second state.

[0038] Figure 4 for Figure 3 A schematic diagram of the structure shown from another perspective;

[0039] Figure 5 This is an assembly state diagram of the first flow guide and the mounting base according to an embodiment of the present utility model;

[0040] Figure 6 for Figure 5 Enlarged view of section C;

[0041] Figure 7 This is a schematic diagram of the structure of the mounting base described in an embodiment of the present utility model;

[0042] Figure 8 This is a schematic diagram of the structure of the first seat body according to an embodiment of the present utility model;

[0043] Figure 9 This is a schematic diagram of the structure of the first seat body described in an embodiment of the present utility model from another perspective;

[0044] Figure 10 This is an assembly state diagram of the second guide component and the drive mechanism according to an embodiment of the present utility model;

[0045] Figure 11 for Figure 2 Enlarged view of section A;

[0046] Figure 12 for Figure 4 Enlarged view of section B.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1. First guide element; 2. Second guide element; 3. Support rod; 4. Driving link; 5. Driven link; 6. Gas spring; 7. Mounting base; 8. Limiting element; 9. Drive shaft; 10. Driving gear; 11. Driven gear; 12. Fixed bracket; 13. Dust cover; 14. Drive motor;

[0049] 101. Extension section;

[0050] 701, First base; 7011, Main board; 70111, Protruding part; 7012, Side plate; 702, Second base. Detailed Implementation

[0051] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0052] In the description of this utility model, it should be noted that the directional terms used in this embodiment, such as "up," "down," "left," "right," "front," and "rear," are defined based on the vertical, horizontal, and longitudinal directions of the vehicle. Specifically, the vertical direction of the vehicle is the height direction (Z-axis), the longitudinal direction is the length direction (X-axis), and the horizontal direction is the width direction (Y-axis). Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0054] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0055] In existing technologies, a fairing is typically installed behind the cab of a commercial vehicle to reduce the drag coefficient. However, the urea tank is often located behind the fairing. When it is necessary to refill the urea tank, the operator has to walk around the fairing or work in a confined space, which is extremely inconvenient. This not only consumes a lot of time and energy, but also easily leads to inaccurate urea filling or spillage due to the limited operation, affecting the normal operation of the vehicle's exhaust gas treatment system.

[0056] Furthermore, for pure electric commercial vehicles, the charging port is typically located behind the fairing. When operating the charging plug, the operator's hand movement is severely restricted, requiring awkward bending and stretching of the arm to align with the charging port. This process is not only difficult but also easily causes fatigue, significantly impacting ergonomics. Over time, this frequent and uncomfortable operation can accelerate wear and tear on the charging plug and vehicle charging port, reducing the lifespan of the charging equipment and increasing vehicle maintenance costs.

[0057] Therefore, this embodiment proposes a novel commercial vehicle body airflow guiding structure, including a first airflow guide 1 and a second airflow guide 2 disposed on the side of the cab, and a drive mechanism disposed between the first airflow guide 1 and the second airflow guide 2. Both the first airflow guide 1 and the second airflow guide 2 extend rearwards towards the cab, and the second airflow guide 2 is driven by the drive mechanism to switch between a first state and a second state. In the first state, the second airflow guide 2 is attached to the lower part of the cab and can shield vehicle components. In the second state, the second airflow guide 2 moves upwards to the outside of the first airflow guide 1 and exposes the vehicle components.

[0058] The commercial vehicle body airflow structure of this embodiment allows the second airflow guide 2 to switch between a first state and a second state via a drive mechanism. In the second state, the second airflow guide 2 moves upward to the outside of the first airflow guide 1, exposing vehicle components. Therefore, during vehicle operation, the first airflow guide 1 and the second airflow guide 2 connected below form a complete airflow shape, effectively reducing wind resistance, energy consumption, and driving stability. After the second airflow guide 2 switches to the second state, the vehicle components are exposed, allowing operators to easily and accurately work on them, significantly saving operation time and reducing labor intensity.

[0059] Based on the above overview, an exemplary structure of the commercial vehicle body airflow guide structure in this embodiment is described below. Figures 1 to 4 As shown, specifically, the airflow guiding structure can be flexibly placed on the left or right side of the cab according to actual needs to adapt to the structural characteristics of different vehicle models. Alternatively, it can be symmetrically arranged on both sides of the cab. As a specific embodiment, such as... Figure 1 As shown, the flow guiding structure is a long strip extending in the vertical direction within the vehicle space, and the outer surfaces of the first flow guiding member 1 and the second flow guiding member 2 are flush with each other in the first state.

[0060] The first air guide 1 has a rectangular plate-like structure, which is beneficial for large-area coverage and airflow guidance. The second air guide 2 is designed as a roughly trapezoidal plate-like structure. This shape, when used in conjunction with the first air guide 1, allows for a gradual airflow transition at the rear of the vehicle, reducing turbulence. It is worth emphasizing that... Figure 1 The shapes of the first guide element 1 and the second guide element 2 shown are for illustrative purposes only. In actual implementation, the shapes of both can be adjusted according to design requirements.

[0061] As a further implementation method, see Figure 7 and Figure 8 As shown, the bottom of the first air guide 1 has a downwardly extending extension portion 101. Furthermore, the extension portion 101 is recessed relative to the outer surface of the first air guide 1, and is located behind the second air guide 2. By providing the extension portion 101, a basis is provided for the installation of the mounting base 7, allowing the mounting base 7 to be installed in a more concealed manner, avoiding an abrupt exposure of the mounting structure, thereby ensuring the overall aesthetics of the first air guide 1 and the entire vehicle body air guide structure.

[0062] Meanwhile, by providing the extension portion 101, the airflow cannot directly enter the gap between the first guide member 1 and the second guide member 2, effectively maintaining the smoothness of the airflow on the side of the vehicle body, reducing turbulence, lowering the drag coefficient, and thus reducing energy consumption. Furthermore, it effectively prevents impurities from entering the guide structure along the gap between the first guide member 1 and the second guide member 2, protecting internal components from external impurities and extending the service life of the components and the drive mechanism.

[0063] In a preferred embodiment, the first guide vane 1 is provided with a mounting base 7, and the first guide vane 1 is mounted on the cab via the mounting base 7. The drive mechanism includes a drive unit mounted on the mounting base 7 and a linkage assembly between the drive unit and the second guide vane 2. This design allows the mounting base 7 to have better structural strength, thereby improving the stability of the first guide vane 1 in the cab. Integrating the drive unit into the mounting base 7 also improves the stability of the drive unit by utilizing the strong structural strength of the mounting base 7, enabling better driving of the second guide vane 2 and improving the response speed and accuracy of the second guide vane 2.

[0064] As a further implementation method, such as Figure 7As shown, the mounting base 7 extends along the longitudinal direction of the vehicle, and a support rod 3 is provided between the rear end of the mounting base and the cab. By extending the mounting base 7 along the longitudinal direction of the vehicle, the contact area with the first air guide 1 can be greatly expanded, improving the installation stability of the first air guide 1. The support rod 3, added between the rear end of the mounting base 7 and the cab, serves as an auxiliary support component, effectively bearing a portion of the rearward force generated by the weight of the air guide structure, airflow force, and vehicle dynamic movement. Furthermore, the support rod 3 works in conjunction with the mounting base 7 to further enhance the fixing effect of the mounting base 7, significantly improving the stability of the entire air guide structure in the longitudinal direction of the vehicle, ensuring that even under extreme conditions, the air guide structure can be firmly fixed to the side of the cab.

[0065] Here, as a specific embodiment, see Figure 7 As shown, the support rod 3 is roughly L-shaped with a bend to provide better structural strength. The mounting base 7 includes a first base 701 and a second base 702 screwed together, both extending along the longitudinal direction of the vehicle, i.e., along the width direction of the first air guide 1. The first base 701 is connected to the first air guide 1, and the second base 702 is connected to the cab. This design significantly increases the contact area between the first base 701 and the second base 702 and the first air guide 1 and the cab, ensuring that the first air guide 1 is firmly fixed to the side of the cab, enabling it to perform its air guiding function.

[0066] The first seat 701 and the second seat 702 are detachably connected by bolts. When maintenance, repair, or replacement of the mounting base 7 is required, the bolts connecting the first seat 701 and the second seat 702 can be unscrewed to separate them, eliminating the need for large-scale disassembly of the entire flow guide structure. This makes the operation simple and quick. It should be noted that the connection methods between the first seat 701 and the second seat 702, the connection method between the first seat 701 and the first flow guide 1, and the connection method between the second seat 702 and the driver's cab can all be adjusted according to design requirements.

[0067] Specifically, in combination Figure 8 and Figure 9 As shown, the first base 701 generally includes a main board 7011 and side plates 7012 disposed on two opposite sides of the main board 7011. The main board 7011 has a protruding portion 70111 that protrudes away from the first guide member 1. The second base 702 is specifically connected to the protruding portion 70111 and defines a receiving space between the first base 701 and the protruding portion 70111. To improve the connection strength between the first base 701 and the second base 702, as a specific embodiment, such as... Figure 9As shown in the figure, there are two protruding portions 70111 in this embodiment, which are spaced apart. Of course, the number of protruding portions 70111 is not limited to two, and can be adjusted accordingly as needed.

[0068] Additionally, see also Figure 7 As shown in the diagram, in a preferred embodiment, the second seat 702 has an overall triangular box-like structure, with its sides connected to the first seat 701 and its bottom connected to the driver's cab. This design gives the second seat 702 better structural strength. Utilizing the stability principle of a triangle, compared to other shapes, the second seat 702 is less prone to deformation when subjected to external forces, which helps ensure the stability of the connection between the entire airflow guiding structure and the driver's cab, reducing the risk of airflow guiding component failure due to loose connections. Simultaneously, the box-like structure itself has a certain internal space, facilitating the placement of other components.

[0069] As a further implementation method, see Figure 6 As shown, the mounting base 7 is provided with a limiting member 8 protruding outward from the vehicle. This limiting member 8 can abut against the second guide member 2 in the first state to limit the displacement of the second guide member 2 towards the vehicle interior. By setting the limiting member 8, the second guide member 2 can be firmly fixed in the first state, allowing the airflow to bypass the vehicle body according to a preset path. This helps to ensure that the guide structure continuously and stably performs its best wind resistance reduction function, and also helps to maintain the surface difference between the first guide member 1 and the second guide member 2.

[0070] In a preferred embodiment, the limiting member 8 is specifically disposed within the aforementioned accommodating space and includes a limiting block and a screw mounted on the limiting block. Furthermore, the limiting member 8 is screwed onto the first base 701 by two nuts located on both sides of the first base 701. Thus, by rotating the screw, the protrusion length of the limiting member 8 towards the outside of the vehicle can be adjusted, allowing for fine-tuning of its position over extended use, thereby ensuring that the second guide member 2 remains flush with the first guide member 2 in its initial state. Additionally, to prevent the limiting member 8 from damaging the second guide member 2, the limiting block can be made entirely of rubber, or a rubber pad can be provided on the side of the limiting block that abuts against the second guide member 2.

[0071] As a preferred embodiment, see Figures 10 to 12As shown, the linkage assembly in this embodiment includes an active linkage 4 and a driven linkage 5 disposed between the second guide member 2 and the mounting base 7. The active linkage 4 and the driven linkage 5 are connected to the second guide member 2 and the mounting base 7 to form a parallelogram linkage mechanism. The active linkage 4 is connected to the drive unit via a transmission assembly. With this configuration, when the second guide member 2 needs to switch between different states, the parallelogram linkage mechanism can ensure that the movement trajectory of the second guide member 2 remains stable due to its geometric characteristics. This effectively avoids movement deviations caused by external force interference, allowing the second guide member 2 to move smoothly along a predetermined path, whether switching from the first state to the second state or vice versa.

[0072] Moreover, the parallelogram linkage mechanism itself has a compact structure, which, compared to some complex multi-link or slider mechanisms, makes it easier to arrange rationally within the limited space on the side of the vehicle body. It can achieve effective driving and motion control of the second guide component 2 without occupying too much lateral and longitudinal space. In addition, it can reserve sufficient installation space for other components on the side of the commercial vehicle body, which can improve the overall utilization rate of the vehicle body space and contribute to the lightweight design and integrated layout of the vehicle.

[0073] Furthermore, the linkage assemblies are arranged in two sets on opposite sides of the second guide member 2. This design ensures that when the second guide member 2 needs to be driven to switch states, the two sets of linkage assemblies located on opposite sides of the second guide member 2 can evenly distribute the force. Compared to setting linkage assemblies on only one side, the double-sided arrangement can effectively avoid deformation problems such as tilting and twisting of the guide member caused by uneven force distribution, which helps to ensure that the second guide member 2 maintains a stable posture during movement and can enhance the overall stability of the guide structure.

[0074] Specifically, for ease of setting up the linkage assembly, see [link / reference]. Figure 10 and Figure 11 As shown, fixed supports 12 are provided on both sides of the second guide member 2. Each fixed support 12 specifically includes a vertical plate connected to the second guide member 2 and a horizontal plate extending to one side of the vertical plate. One end of the driving link 4 and the driven link 5 are respectively hinged to the horizontal plate, and the other end of the driven link 5 is hinged to the side plate 7012 of the first base 701. The other end of the driving link 4 is connected to the transmission assembly via a drive unit. Furthermore, to reduce wear on the driving link 4 and the driven link 5, bushings are provided at the hinge points of the driving link 4 and the driven link 5. The arrangement of these bushings is as per conventional methods and will not be described further here.

[0075] In addition, combined Figure 10 and Figure 11 As shown, to prevent the second guide member 2 from interfering with the first guide member 1 during movement, the active link 4 and the driven link 5 in this embodiment are approximately L-shaped. As a preferred embodiment, see [reference needed]. Figure 10 and Figure 11 As shown, the drive unit in this embodiment includes a drive motor 14 mounted on the mounting base 7. The transmission assembly includes a drive shaft 9 rotatably mounted on the mounting base 7, a gear pair disposed between the drive shaft 9 and the drive shaft of the drive motor 14, and a drive linkage 4 connected to the drive shaft 9.

[0076] Specifically, the drive motor 14 is mounted on the second seat 702, while the transmission shaft 9 is rotatably mounted between the two side plates 7012 of the first seat 701. Alternatively, in a specific implementation, the drive motor 17 can be a servo motor and electrically connected to the vehicle control unit. Furthermore, a switch electrically connected to the vehicle control unit can be installed in the driver's cab, with one end of the switch connected to the signal output port of the vehicle control unit. The vehicle control unit will determine whether to control the start and stop of the drive motor 14 based on the switch's operation signal. The switch should be installed in a location easily accessible to the driver, such as on the center console, near the steering wheel, or on the inner armrest of the door.

[0077] By mounting the drive motor 14 on the mounting base 7, the space of the mounting base 7 can be fully utilized, allowing the entire drive system to be tightly integrated with other parts of the guide structure, reducing additional space occupation and contributing to a compact design of the commercial vehicle's side profile. Furthermore, by rotatably mounting the drive shaft 9 on the mounting base 7 and connecting it to the drive shaft of the drive motor 14 via a gear pair, the structure of the transmission components becomes more compact, improving power transmission efficiency and thus reducing the energy consumption of the drive motor 14, thereby enhancing the fuel economy of the commercial vehicle. In addition, the gear pair has a relatively simple structure, mature manufacturing process, and high reliability and stability.

[0078] Furthermore, since the aforementioned linkage assemblies are arranged in two opposing sets, the motor axis of the drive motor 14 in this embodiment extends outward relative to each other, and the gear pairs are two sets respectively located at both ends of the drive shaft. Specifically, the gear pairs include a driving gear 10 located on the drive shaft and a driven gear 11 located on the transmission shaft 9. It should be noted that, in addition to gear pairs transmitting power, belt drives or chain drives can also be used to transmit power.

[0079] Furthermore, an assisting element is provided between the mounting base 7 and the active connecting rod 4. This assisting element is used to push the second guide member 2 from the first state to the second state. By providing the assisting element, during the state transition of the second guide member 2, the operation can stop after the drive motor 14 drives the connecting rod assembly to open beyond a critical point. At this time, under the action of the assisting element, the connecting rod assembly can be driven to open to the maximum angle, thereby realizing the switching of the second guide member 2 to the second state.

[0080] And see Figure 10 and Figure 11As shown in the diagram, in a preferred embodiment, the assisting element is a gas spring 6 hinged to the mounting base, and the piston rod of the gas spring 6 is hinged to the driving link 4. The hinge point between the piston rod of the gas spring 6 and the driving link 4 is located closer to the end of the driving link 4 than the connection point between the driving link 4 and the drive shaft 9. Furthermore, a dust cover 13 is provided at the end of the cylinder of the gas spring 6 where the piston rod extends; the dust cover 13 is fitted over the piston rod and abuts against it.

[0081] By incorporating the gas spring 6, when the second guide component 2 needs to switch from the first state to the second state, the gas spring 6 provides additional thrust to assist in pushing the active connecting rod 4, thereby driving the second guide component 2 to quickly switch states. Furthermore, by incorporating the dust cover 13, which is fitted over the piston rod and abuts against it, the dust cover 13 effectively cleans dust adhering to the piston rod, preventing long-term dust accumulation on the piston rod surface from causing movement stagnation. This helps maintain the normal working performance of the gas spring 6 and extends its service life.

[0082] Based on the above overall description, the second guide member 2 in this embodiment has two switching modes: electric and manual. In the electric opening mode, when the second guide member 2 needs to be opened, pressing the switch sends a signal to the drive motor 14, causing it to rotate and drive the transmission shaft 9 to rotate clockwise by a certain angle (e.g., 90°). At this time, the transmission shaft 9 drives the active linkage 4 to rotate clockwise by the same angle, causing the linkage mechanism to open beyond the critical opening angle (e.g., 70°). Then, under the action of the gas spring 6, the linkage mechanism automatically opens to the maximum angle (e.g., 135°), switching the second guide member 2 to the second state.

[0083] When it is necessary to switch the second guide member 2 to the first state mechanism, press the switch. At this time, the drive motor 14 drives the transmission shaft 9 to rotate 90° counterclockwise. Then, the transmission shaft 9 drives the linkage mechanism to rotate counterclockwise by a certain angle (e.g., 90°), so that the closing angle of the linkage mechanism exceeds the opening critical point (e.g., 70°). At this time, under the action of the gas spring 6, the linkage mechanism automatically closes to the minimum angle of 0° and switches the second guide member 2 to the first state. Under the action of the limiting member 8, the second guide member 2 can be prevented from moving further.

[0084] When manually switching to the second state, hold the lower end of the second guide member 2 and pull it outwards until it passes the critical point, then release it. After passing the critical point, the compressed gas spring 6 applies a driving force to the active linkage 4, causing the linkage mechanism to automatically open to a larger angle, up to the maximum angle. After reaching the maximum angle, the active linkage 4 abuts against the first seat 701 of the mounting base and no longer opens. At the same time, it will not close under the action of the gas spring 6, and will always remain in the open state. When closing, hold the lower end of the second guide member 2 and pull it inwards to close it. It will automatically close after returning to the critical point, switching the second guide member 2 back to the first state.

[0085] It should be noted that, in addition to using the gas spring 6 and the mounting base 7 to maintain the state of the second guide member 2, the gas spring 6 can also be omitted, and the self-locking drive motor 14 of the prior art can be used to maintain the second guide member 2 in the first and second states.

[0086] The commercial vehicle body airflow guiding structure of this embodiment, by adopting the above structure, allows the first airflow guide 1 and the second airflow guide 2 spliced ​​below to form a complete airflow guiding shape, effectively reducing wind resistance. At the same time, it also allows the second airflow guide 2 to move upward, freeing up operating space and facilitating operations on vehicle components.

[0087] In addition, this embodiment also relates to a commercial vehicle, which is provided with the commercial vehicle body airflow structure as described above.

[0088] In this embodiment, the commercial vehicle, by setting the commercial vehicle body airflow guiding structure as described above, can form a complete airflow guiding shape with the first airflow guide 1 and the second airflow guide 2 spliced ​​below during vehicle operation. This effectively reduces wind resistance, lowers energy consumption, and improves driving stability, meeting the needs of high-speed long-distance transportation. When it is necessary to operate the vehicle components behind, the second airflow guide 2 can move upward to make room for operation. Thus, the airflow guiding function can be guaranteed without affecting the convenience of daily maintenance of vehicle components.

[0089] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A commercial vehicle body airflow guiding structure, characterized in that: It includes a first guide (1) and a second guide (2) disposed on the side of the cab, and a drive mechanism disposed between the first guide (1) and the second guide (2); Both the first guide (1) and the second guide (2) extend toward the rear of the cab, and the second guide (2) is driven by the drive mechanism to switch between a first state and a second state. In the first state, the second guide (2) is attached to the lower part of the first guide (1) and can cover the vehicle components. In the second state, the second guide (2) moves upward to the outside of the first guide (1) and exposes the vehicle components.

2. The commercial vehicle body airflow guiding structure according to claim 1, characterized in that: The first guide (1) is provided with a mounting seat (7), and the first guide (1) is mounted on the cab through the mounting seat (7); The drive mechanism includes a drive unit disposed on the mounting base (7) and a connecting rod assembly disposed between the drive unit and the second guide member (2).

3. The commercial vehicle body airflow guiding structure according to claim 2, characterized in that: The linkage assembly includes an active linkage (4) and a driven linkage (5) disposed between the second guide member (2) and the mounting base (7), and the active linkage (4) and the driven linkage (5) are connected to the second guide member (2) and the mounting base (7) to form a parallelogram linkage mechanism; The active link (4) is connected to the drive unit via a transmission assembly.

4. The commercial vehicle body airflow guiding structure according to claim 3, characterized in that: The drive unit includes a drive motor (14) mounted on the mounting base (7); The transmission assembly includes a transmission shaft (9) rotatably mounted on the mounting base (7), and a gear pair disposed between the transmission shaft (9) and the drive shaft of the drive motor (14), and the active connecting rod (4) is connected to the transmission shaft (9).

5. The commercial vehicle body airflow guiding structure according to claim 3, characterized in that: An assisting element is provided between the mounting base (7) and the active connecting rod (4), and the assisting element is used to push the second guide member (2) to switch from the first state to the second state.

6. The commercial vehicle body airflow guiding structure according to claim 5, characterized in that: The assisting element is a gas spring (6) hinged to the mounting base (7), and the piston rod of the gas spring (6) is hinged to the active connecting rod (4); The cylinder of the gas spring (6) has a dust cover (13) at one end where the piston rod extends. The dust cover (13) is fitted over the piston rod and abuts against the piston rod.

7. The commercial vehicle body airflow guiding structure according to claim 2, characterized in that: The mounting base (7) is provided with a limiting member (8) protruding outward from the vehicle side; The limiting member (8) can abut against the second guide member (2) in the first state to limit the displacement of the second guide member (2) towards the inside of the vehicle.

8. The commercial vehicle body airflow guiding structure according to claim 2, characterized in that: The mounting base (7) extends along the front-rear direction of the vehicle, and a support rod (3) is provided between the rear end of the mounting base (7) and the cab.

9. The commercial vehicle body airflow guide structure according to any one of claims 1 to 8, characterized in that: The bottom of the first guide member (1) is provided with a downwardly extending extension portion (101); The extension portion (101) is recessed relative to the outer surface of the first guide member (1), and the extension portion (101) is located on the rear side of the second guide member (2).

10. A commercial vehicle, characterized in that: The commercial vehicle is provided with a commercial vehicle body airflow guide structure as described in any one of claims 1 to 9.

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