Active noise reduction structure and vehicle

Abstract

The application relates to an active noise reduction structure and a vehicle, and belongs to the technical field of vehicle structures. The active noise reduction structure comprises a flow guide plate located between a front windshield and a front engine cover plate, two symmetrically arranged driving structures, and a driving unit. The length direction of the flow guide plate is parallel to the width direction of the vehicle body. The driving structure comprises a connecting piece, a sliding piece arranged on the connecting piece, and a guide slide arranged on the vehicle body. The connecting piece is detachably connected with the flow guide plate. The driving unit is used for driving the two connecting pieces to drive the sliding pieces to slide in the guide slide. When all the sliding pieces are located at the highest position, the side of the flow guide plate close to the front windshield is inclined upward and is higher than the top edge of the rain wiper when the rain wiper is flat, and the side of the flow guide plate away from the front windshield is supported on the vehicle body. When all the sliding pieces are located at the lowest position, the flow guide plate is flat and adheres to the vehicle body. The application at least solves the technical problem that the noise source in the front windshield area is obviously increased due to the current exposed rain wiper design.

Description

Technical Field

[0001] This application relates to the field of vehicle structure technology, and in particular to an active noise reduction structure and vehicle. Background Technology

[0002] In the current market, the design concept of boxy vehicles usually emphasizes a rugged appearance. Their body shells feature a raised hood design and a large windshield angle. Correspondingly, these vehicles usually adopt an exposed wiper design to further enhance their rugged off-road visual effect.

[0003] However, this design has significant drawbacks at high speeds: the hood's surface design is not smooth enough, causing airflow separation. This separated airflow directly impacts the wiper area, leading to turbulent airflow and creating large turbulent sound clusters around the windshield. As the vehicle moves, these turbulent sound clusters continuously break up and couple, significantly increasing the noise level in the windshield area. This noise enters the vehicle, severely impacting the sound quality inside, hindering communication between passengers, and reducing driving comfort. Utility Model Content

[0004] This application at least partially solves the technical problem of significantly increased noise in the windshield area caused by the current exposed wiper design.

[0005] Therefore, this application aims to provide an active noise reduction structure and vehicle, in which a deflector that is raised, lowered and rotated under the guidance of a guide slide is installed in the gap between the windshield and the hood of the vehicle body, so as to change the airflow direction in front of the wipers, avoid the airflow directly impacting the wipers when the vehicle is moving, and reduce the noise source at the windshield.

[0006] To achieve the above objectives, in a first aspect, this application provides an active noise reduction structure, comprising: a deflector located between the windshield and the hood of the vehicle body, two symmetrically arranged drive structures, and a drive unit; the length direction of the deflector is parallel to the width direction of the vehicle body; The drive structure includes a connector, a sliding member disposed on the connector, and a guide rail disposed on the vehicle body; the connector is detachably connected to the deflector; the drive unit is used to drive the two connectors to drive the sliding member to slide within the guide rail. When all the sliding members are at their highest position, the side of the deflector near the windshield tilts upward and is higher than the top edge of the vehicle body after the windshield wipers are flattened, and the side of the deflector away from the windshield is supported by the vehicle body; when all the sliding members are at their lowest position, the deflector is flattened and fits against the vehicle body.

[0007] In this technical solution, a deflector, guided by a guide rail and raised and rotated, is installed in the gap between the windshield and the hood of the vehicle. This alters the airflow direction in front of the wipers, preventing direct airflow impact on the wipers while the vehicle is in motion and reducing noise at the windshield. When the vehicle is stationary, the deflector lies flat to minimize its impact on the vehicle's rugged appearance. Furthermore, the drive structure allows for a certain degree of compensation deviation, which helps reduce the installation precision requirements of various components in the active noise cancellation structure.

[0008] In some embodiments of this application, the sliding member includes a first guide shaft and a second guide shaft; one end of the connector is detachably connected to the guide plate; the guide plate and the second guide shaft are located on both sides of the first guide shaft; the first guide shaft and the second guide shaft move up and down and rotate within the guide slide.

[0009] In the technical solution, when both the first guide shaft and the second guide shaft are at their highest points, the side of the deflector closest to the windshield is tilted upwards and higher than the top edge of the vehicle body after the windshield wipers are flattened, while the side of the deflector away from the windshield is supported by the vehicle body; when both the first guide shaft and the second guide shaft are at their lowest points, the deflector is flattened and fits against the vehicle body.

[0010] In some embodiments of this application, the guide slide includes a vertical slide and an arc slide, the center of the arc slide is located at the top of the vertical slide, the top of the arc slide is flush with the top of the vertical slide, and the bottom of the arc slide is connected to the middle of the vertical slide; the output end of the drive unit is connected to the second guide shaft; When the second guide shaft is located below the arc slide, the second guide shaft is located in the vertical slide and below the first guide shaft; when the first guide shaft is at the top of the vertical slide, the second guide shaft enters the arc slide and drives the connector to rotate.

[0011] In the technical solution, the first guide shaft and the second guide shaft, in the lower half of the guide slide, both drive the connector to perform lifting and lowering movements under the guidance of vertical sliding; in the upper half of the guide slide, the first guide shaft and the second guide shaft, respectively guided by the vertical slide and the arc slide, drive the connector to perform rotational movements.

[0012] In some embodiments of this application, the connector includes a first straight segment, a second straight segment, and a third straight segment connected in sequence. The first straight segment and the third straight segment are located on opposite sides of the second straight segment. The end of the third straight segment away from the second straight segment is connected to the guide plate. The first guide shaft and the second guide shaft are respectively installed at both ends of the first straight segment.

[0013] In the technical solution, the structure of the connector increases the distance between the connection point of the deflector and the connector and the guide rail in the vehicle length direction, reducing the possibility of interference between the two and reducing the assembly difficulty of the active noise reduction structure.

[0014] In some embodiments of this application, the connector further includes a mounting plate; two mounting plates are respectively formed on the two adjacent sides of the two third straight segments, and each mounting plate is mounted to the guide plate by a plurality of bolts.

[0015] In the technical solution, the mounting plate is installed on the guide plate by multiple bolts, which facilitates the disassembly and maintenance of the drive structure.

[0016] In some embodiments of this application, the driving unit includes two rocker structures corresponding to two driving structures, and at least one driving motor; the rocker structure includes a connecting rod and a rocker arm, with the two ends of the connecting rod rotatably connected to the corresponding second guide shaft and one end of the rocker arm, respectively; the two rockers rotate under the drive of the two driving motors, or the two rockers rotate under the drive of the same driving motor.

[0017] In this technical solution, by means of a low-cost rocker structure, the drive motor can drive the connecting member to perform complex movements that combine lifting and rotation.

[0018] In some embodiments of this application, the drive unit further includes a connecting shaft, with both ends of the connecting shaft connected to two of the rocker arms respectively, and a drive motor is provided, with the output shaft of the drive motor connected to the connecting shaft.

[0019] In the technical solution, by using the connecting shaft, a drive motor is used to synchronously drive the two rockers to rotate, which can improve the synchronization of the two rocker structures, avoid uneven force on the deflector in the vehicle width direction and improve the wind-guiding stability of the deflector, and at the same time help to reduce the production cost and energy consumption of the active noise reduction structure.

[0020] In some embodiments of this application, the guide slide is disposed on the guide plate, two guide plates are symmetrically arranged and detachably installed on the vehicle body, and the guide slide is hollowed out in the guide plate.

[0021] In this technical solution, the guide plate is detachable for easy disassembly and replacement. The perforated guide track is easy to process.

[0022] In some embodiments of this application, the active noise reduction structure further includes an elastic sealing structure, which is installed on the side of the deflector. When the side of the deflector near the windshield is tilted upward, the gap between the bottom edge of the deflector and the vehicle body is sealed by the elastic sealing structure.

[0023] In the technical solution, the elastic sealing structure helps reduce the possibility of airflow entering the gap between the deflector and the vehicle body during vehicle operation, and helps reduce the noise source at the deflector.

[0024] Secondly, this application provides a vehicle in which a mounting groove is provided between the windshield and the front hood of the vehicle body, and the aforementioned active noise reduction structure is installed in the mounting groove.

[0025] In this technical solution, a deflector, driven by a linkage unit, is installed in the gap between the windshield and the hood of the vehicle to change the airflow direction in front of the wipers, preventing the airflow from directly impacting the wipers while the vehicle is in motion. This application provides a vehicle that can reduce noise sources at the windshield while having minimal impact on the vehicle's robust appearance when stationary.

[0026] As can be seen from the above technical solutions, additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application.

[0027] The active noise reduction structure and vehicle provided in this application have at least the following advantages: 1. A deflector, guided by a guide rail and raised and rotated, is installed in the gap between the windshield and the hood of the vehicle to change the airflow direction in front of the wipers, preventing direct airflow impact on the wipers while the vehicle is in motion and reducing noise at the windshield. When the vehicle is stationary, the deflector lies flat to minimize its impact on the vehicle's rugged appearance. Furthermore, the drive structure allows for a certain degree of compensation deviation, which helps reduce the installation precision requirements of various components in the active noise cancellation structure.

[0028] 2. The gap between the bottom edge of the air deflector and the vehicle body is sealed by the elastic sealing structure. The elastic sealing structure helps reduce the possibility of airflow entering the gap between the air deflector and the vehicle body during vehicle operation, and helps reduce noise sources at the air deflector. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the activation of the active noise reduction structure according to the embodiments of this application. Figure 1 ; Figure 2 This is a schematic diagram of the active noise reduction structure according to the embodiments of this application. Figure 2 ; Figure 3 This is a schematic diagram of the tilting of the guide plate in the active noise reduction structure of the present application embodiment; Figure 4 This is a schematic diagram of the active noise reduction structure in this application, in which the air deflector is laid flat but not attached to the vehicle body; Figure 5 This is a schematic diagram of the guide plate of the active noise reduction structure according to an embodiment of this application.

[0030] In the above figures: 1. Deflector; 21. Connector; 211. First straight segment; 212. Second straight segment; 213. Third straight segment; 22. First guide shaft; 23. Second guide shaft; 24. Guide plate; 241. Vertical slide rail; 242. Circular arc slide rail; 31. Rocker arm; 32. Connecting rod; 33. Hinge shaft; 41. Connecting shaft; 5. Body; 6. Ventilation cover; 7. Elastic sealing structure. Detailed Implementation

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0035] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0036] It should be noted that in the field of vehicles, the design concept of boxy models usually emphasizes a rugged appearance. Their body shells have features such as a raised hood design and a large windshield angle. Correspondingly, these models usually adopt an exposed windshield wiper design to further enhance their rugged off-road visual effect.

[0037] In existing technologies, the hood's surface design is not smooth enough, causing airflow separation during transition. This separated airflow directly impacts the wiper area, leading to turbulent airflow and the formation of large turbulent sound clusters around the windshield. As the vehicle moves, these turbulent sound clusters continuously break up and couple, significantly increasing the noise source in the windshield area. This noise enters the vehicle, severely affecting the sound quality inside, hindering communication between passengers, and reducing driving comfort.

[0038] Based on this, this application aims to provide an active noise reduction structure and vehicle. By installing a deflector that is raised, lowered, and rotated under the guidance of a guide slide in the gap between the windshield and the hood of the vehicle, the airflow direction in front of the wiper is changed, avoiding direct impact of airflow on the wiper when the vehicle is in motion. To a certain extent, this solves the technical problem of gas flow field disturbance caused by the current exposed wiper design, which forms a large turbulent sound mass around the windshield and causes a significant increase in noise source in the windshield area.

[0039] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0040] As attached Figures 1 to 5 As shown in an illustrative embodiment of the active noise cancellation structure and vehicle of this application, the active noise cancellation structure includes: A deflector 1 is located between the windshield of the vehicle body 5 and the front hood of the vehicle body 5, two symmetrically arranged drive structures, and a drive unit; the length direction of the deflector 1 is parallel to the width direction of the vehicle body 5. The drive structure includes a connector 21, a sliding member disposed on the connector 21, and a guide rail disposed on the vehicle body 5; the connector 21 is detachably connected to the deflector plate 1; the drive unit is used to drive the two connectors 21 to drive the sliding member to slide within the guide rail. When all the sliding members are at their highest position, the side of the deflector 1 closest to the windshield tilts upward and is higher than the top edge of the wiper of the vehicle body 5 after it is flattened, and the side of the deflector 1 away from the windshield is supported by the vehicle body 5; when all the sliding members are at their lowest position, the deflector 1 is flattened and fits against the vehicle body.

[0041] In the technical solution, a deflector 1, guided by a guide rail and raised and rotated, is installed in the gap between the windshield and the hood of the vehicle body 5. This changes the airflow direction in front of the wipers, preventing direct airflow impact on the wipers while the vehicle is in motion and reducing noise at the windshield. When the vehicle is stationary, the deflector 1 is flattened to minimize its impact on the vehicle's rugged appearance. Furthermore, the drive structure allows for a certain degree of compensation deviation, which helps reduce the installation precision requirements of various components in the active noise cancellation structure.

[0042] In some embodiments of this application, the sliding member includes a first guide shaft 22 and a second guide shaft 23; one end of the connector 21 is detachably connected to the guide plate 1; the guide plate 1 and the second guide shaft 23 are located on both sides of the first guide shaft 22; the first guide shaft 22 and the second guide shaft 23 move up and down and rotate within the guide slide.

[0043] In the technical solution, when the first guide shaft 22 and the second guide shaft 23 are both at their highest points, the side of the deflector 1 near the windshield is tilted upward and higher than the top edge of the wiper of the vehicle body 5 after it is flattened, and the side of the deflector 1 away from the windshield is supported by the vehicle body 5; when the first guide shaft 22 and the second guide shaft 23 are both at their lowest points, the deflector 1 is flattened and fits against the vehicle body 5.

[0044] In some embodiments of this application, the guide slide includes a vertical slide 241 and an arc slide 242. The center of the arc slide 242 is located at the top of the vertical slide 241, and the top of the arc slide 242 is flush with the top of the vertical slide 241. The bottom of the arc slide 242 is connected to the middle of the vertical slide 241. The guide plate 1 and the second guide shaft 23 are located on both sides of the first guide shaft 22. The output end of the drive unit is connected to the second guide shaft 23. When the second guide shaft 23 is located below the arc slide 242, the second guide shaft 23 is located in the vertical slide 241, and the second guide shaft 23 is located below the first guide shaft 22; when the first guide shaft 22 is at the top of the vertical slide 241, the second guide shaft 23 enters the arc slide 242, driving the connector 21 to rotate.

[0045] In the technical solution, the first guide shaft 22 and the second guide shaft 23, in the lower half of the guide slide, drive the connecting member 21 to perform lifting and lowering actions under the guidance of vertical sliding; in the upper half of the guide slide, the first guide shaft 22 and the second guide shaft 23, in the guidance of the vertical slide 241 and the arc slide 242 respectively, drive the connecting member 21 to perform rotational actions.

[0046] In some embodiments of this application, the connector 21 includes a first straight segment 211, a second straight segment 212, and a third straight segment 213 connected in sequence. The first straight segment 211 and the third straight segment 213 are located on both sides of the second straight segment 212, and the end of the third straight segment 213 away from the second straight segment 212 is connected to the guide plate 1. The first guide shaft 22 and the second guide shaft 23 are respectively installed at both ends of the first straight segment 211.

[0047] In the technical solution, the structure of the connector 21 increases the distance between the connection point of the guide plate 1 and the connector 21 and the guide rail in the vehicle length direction, reducing the possibility of interference between the two and reducing the assembly difficulty of the active noise reduction structure.

[0048] In some embodiments of this application, the connector 21 further includes a mounting plate; two mounting plates are respectively formed on the two adjacent sides of the two third straight segments 213, and each mounting plate is mounted to the guide plate 1 by a plurality of bolts.

[0049] In the technical solution, the mounting plate is installed on the guide plate 1 by multiple bolts, which facilitates the disassembly and maintenance of the drive structure.

[0050] Furthermore, the connector 21 is an integrally formed structure. The mounting plate, the first straight segment 211, the second straight segment 212, and the third straight segment 213 are processed on a flat metal plate, and then the mounting plate and the third straight segment 213 are made to form a right angle through sheet metal bending.

[0051] Furthermore, the bottom surface of the guide plate 1 is provided with threaded holes corresponding to the bolts one by one. Each bolt is threaded into its corresponding threaded hole. All the threaded holes are blind holes to ensure the smoothness of the top surface of the guide plate 1, reduce the possibility of turbulent sound clusters forming on the top surface of the guide plate 1, and reduce the noise source at the guide plate 1.

[0052] In some embodiments of this application, the driving unit includes two rocker structures corresponding to two driving structures, and at least one driving motor; the rocker structure includes a connecting rod 32 and a rocker 31, the two ends of the connecting rod 32 are respectively rotatably connected to the corresponding second guide shaft 23 and one end of the rocker 31; the two rockers 31 rotate under the drive of two driving motors respectively, or the two rockers 31 rotate under the drive of the same driving motor.

[0053] In the technical solution, by means of a low-cost rocker structure, the drive motor can drive the connecting member 21 to perform complex movements that combine lifting and rotation.

[0054] In some embodiments of this application, the drive unit further includes a connecting shaft 41, the two ends of which are respectively connected to two rocker arms 31, and a drive motor is provided, the output shaft of which is connected to the connecting shaft 41.

[0055] In the technical solution, by using the connecting shaft 41, a drive motor is used to synchronously drive the two rockers 31 to rotate, which can improve the synchronization of the two rocker structures, avoid uneven force on the deflector 1 in the vehicle width direction and improve the air guiding stability of the deflector 1. At the same time, it also helps to reduce the production cost and energy consumption of the active noise reduction structure.

[0056] In some embodiments of this application, the first guide shaft 22 and the second guide shaft 23 are fixed to the connector 21, one end of the connecting rod 32 is sleeved on the second guide shaft 23, and the other end of the connecting rod 32 is fixed with a hinge shaft 33. One end of the rocker arm 31 is sleeved and detachably fixedly connected to the connecting shaft 41, and the other end of the rocker arm 31 is sleeved on the hinge shaft 33.

[0057] Furthermore, a driven gear is detachably connected to the connecting shaft 41, the connecting shaft 41 passes through the driven gear, and a driving gear is detachably connected to the output shaft of the drive motor, the driving gear and the driven gear meshing.

[0058] Furthermore, the output shaft of the drive motor and the drive gear are provided with matching drive keyways, and the drive unit also includes a drive connection key, which is embedded in the two drive keyways to realize the connection between the drive motor and the drive gear.

[0059] Furthermore, the driven gear and the connecting shaft 41 are provided with matching driven keyways, and the drive unit also includes a driven connecting key, which is embedded in the two driven keyways to realize the connection between the connecting shaft 41 and the driven gear.

[0060] In some embodiments of this application, the guide slide is disposed on the guide plate 24, and the two guide plates 24 are symmetrically arranged and detachably installed on the vehicle body 5.

[0061] In the technical solution, the guide plate 24 is detachable, so as to facilitate the disassembly and replacement of the guide plate 24.

[0062] In some embodiments of this application, the guide rail is hollowed out in the guide plate 24; multiple bolts pass through the guide plate 24 and are threadedly connected to the vehicle body 5.

[0063] In this technical solution, the hollowed-out guide rail is easy to manufacture. The guide plate 24 is reliably connected to the vehicle body 5 by bolts.

[0064] In some embodiments of this application, the active noise reduction structure further includes an elastic sealing structure 7, which is installed on the side of the deflector 1. When the side of the deflector 1 near the windshield is tilted upward, the gap between the bottom edge of the deflector 1 and the vehicle body 5 is sealed by the elastic sealing structure 7.

[0065] In the technical solution, the elastic sealing structure 7 helps to reduce the possibility of airflow entering the gap between the deflector 1 and the vehicle body 5 during vehicle operation, and helps to reduce the noise source at the deflector 1.

[0066] Furthermore, the elastic sealing structure 7 is a sealing strip.

[0067] In some embodiments of this application, when the side of the deflector 1 near the windshield is tilted upward to its highest point, the angle between the deflector 1 and the horizontal plane is less than or equal to forty-five degrees.

[0068] In the technical solution, the angle between the deflector 1 and the horizontal plane is limited to less than or equal to 45 degrees, so as to prevent the side of the deflector 1 near the windshield from being violently shaken by the airflow impact. This helps to ensure the reliability of the active noise reduction structure in changing the airflow direction under strong airflow impact, protects the linkage 32 unit, and also helps to reduce the noise source at the deflector 1.

[0069] In some embodiments of this application, when the guide plate 1 is flat, both drive structures and the drive unit are located directly below the guide plate 1.

[0070] In the technical solution, both drive structures and the drive unit are located directly below the air deflector 1 to reduce the occupation of the active noise reduction structure in the vehicle's horizontal space.

[0071] In some embodiments of this application, the active noise reduction structure further includes a ventilation cover 6, which is detachably mounted on the vehicle body 5. The ventilation cover 6 is located below the air guide plate 1 and between the two drive structures to protect the drive motor.

[0072] Furthermore, the gap between the ventilation cover 6 and the two drive structures helps to reduce the frictional contact between the drive structure and the ventilation cover 6, protect the drive structure, and at the same time reduce the frictional resistance experienced by the drive structure when the guide plate 1 is opened and closed, thereby reducing the energy consumption of the drive motor.

[0073] Secondly, this application provides a vehicle in which a mounting groove is provided between the windshield of the vehicle body 5 and the front engine hood of the vehicle body 5, and the active noise reduction structure described in any of the above embodiments or any combination of embodiments is installed in the mounting groove.

[0074] In the technical solution, a deflector 1, driven by a linkage 32 unit to rotate, is installed in the gap between the windshield and the hood of the vehicle body 5 to change the airflow direction in front of the wipers and prevent the airflow from directly impacting the wipers when the vehicle is in motion. This application provides a vehicle that can reduce noise sources at the windshield while having minimal impact on the vehicle's rugged appearance when the vehicle is stationary.

[0075] Through the description of several embodiments of the active noise cancellation structure and vehicle provided in this application, it can be seen that the embodiments of the active noise cancellation structure and vehicle provided in this application have at least the following advantages: 1. A deflector, guided by a guide rail and raised and rotated, is installed in the gap between the windshield and the hood of the vehicle to change the airflow direction in front of the wipers, preventing direct airflow impact on the wipers while the vehicle is in motion and reducing noise at the windshield. When the vehicle is stationary, the deflector lies flat to minimize its impact on the vehicle's rugged appearance. Furthermore, the drive structure allows for a certain degree of compensation deviation, which helps reduce the installation precision requirements of various components in the active noise cancellation structure.

[0076] 2. The gap between the bottom edge of the air deflector and the vehicle body is sealed by the elastic sealing structure. The elastic sealing structure helps reduce the possibility of airflow entering the gap between the air deflector and the vehicle body during vehicle operation, and helps reduce noise sources at the air deflector.

[0077] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An active noise reduction structure, characterized in that, It includes: a deflector (1) located between the windshield of the vehicle body (5) and the front hood of the vehicle body (5), two symmetrically arranged drive structures, and a drive unit; the length direction of the deflector (1) is parallel to the width direction of the vehicle body (5); The drive structure includes a connector (21), a sliding member disposed on the connector (21), and a guide rail disposed on the vehicle body (5); the connector (21) is detachably connected to the deflector plate (1); the drive unit is used to drive the two connectors (21) to drive the sliding member to slide in the guide rail; When all the sliding members are at their highest position, the deflector (1) is tilted upward on the side near the windshield and higher than the top edge of the wiper of the vehicle body (5) after it is flattened, and the side away from the windshield of the deflector (1) is supported on the vehicle body (5); when all the sliding members are at their lowest position, the deflector (1) is flattened and fits against the vehicle body (5).

2. The active noise reduction structure according to claim 1, characterized in that, The sliding member includes a first guide shaft (22) and a second guide shaft (23); one end of the connector (21) is detachably connected to the guide plate (1); the guide plate (1) and the second guide shaft (23) are located on both sides of the first guide shaft (22); the first guide shaft (22) and the second guide shaft (23) move up and down and rotate within the guide slide.

3. The active noise reduction structure according to claim 2, characterized in that, The guide slide includes a vertical slide (241) and an arc slide (242). The center of the arc slide (242) is located at the top of the vertical slide (241). The top of the arc slide (242) is flush with the top of the vertical slide (241). The bottom of the arc slide (242) is connected to the middle of the vertical slide (241). The output end of the drive unit is connected to the second guide shaft (23). When the second guide shaft (23) is located below the arc slide (242), the second guide shaft (23) is located in the vertical slide (241), and the second guide shaft (23) is located below the first guide shaft (22); when the first guide shaft (22) is at the top of the vertical slide (241), the second guide shaft (23) enters the arc slide (242) and drives the connector (21) to rotate.

4. The active noise reduction structure according to claim 3, characterized in that, The connector (21) includes a first straight segment (211), a second straight segment (212), and a third straight segment (213) connected in sequence. The first straight segment (211) and the third straight segment (213) are located on both sides of the second straight segment (212). The end of the third straight segment (213) away from the second straight segment (212) is connected to the guide plate (1). The first guide shaft (22) and the second guide shaft (23) are respectively installed at both ends of the first straight segment (211).

5. The active noise reduction structure according to claim 4, characterized in that, The connector (21) also includes a mounting plate; the two mounting plates are respectively formed on the two adjacent sides of the two third straight segments (213), and each mounting plate is mounted to the guide plate (1) by a plurality of bolts.

6. The active noise reduction structure according to claim 3, characterized in that, The drive unit includes two rocker structures corresponding to the two drive structures, and at least one drive motor; the rocker structure includes a connecting rod (32) and a rocker (31), the two ends of the connecting rod (32) are rotatably connected to the corresponding second guide shaft (23) and one end of the rocker (31); the two rockers (31) rotate under the drive of the two drive motors respectively, or the two rockers (31) rotate under the drive of the same drive motor.

7. The active noise reduction structure according to claim 6, characterized in that, The drive unit also includes a connecting shaft (41), the two ends of which are respectively connected to the two rockers (31), and a drive motor is provided, the output shaft of which is connected to the connecting shaft (41).

8. The active noise reduction structure according to any one of claims 1 to 7, characterized in that, The guide slide is disposed on the guide plate (24), and the two guide plates (24) are symmetrically arranged and detachably installed on the vehicle body (5); the guide slide is hollowed out in the guide plate (24).

9. The active noise reduction structure according to any one of claims 1 to 7, characterized in that, It also includes an elastic sealing structure (7), which is installed on the side of the deflector (1). When the side of the deflector (1) near the windshield is tilted upward, the gap between the bottom edge of the deflector (1) and the vehicle body (5) is sealed by the elastic sealing structure (7).

10. A vehicle, characterized in that, An installation groove is provided between the windshield of the vehicle body (5) and the front engine hood of the vehicle body (5), and the active noise reduction structure as described in any one of claims 1 to 9 is installed in the installation groove.

Images