Flow guiding device, front bumper assembly and vehicle

Abstract

The embodiment of the utility model provides a flow guide device, a front bumper assembly and a vehicle. The flow guide device can comprise a linear execution assembly and a flow guide plate. The linear execution assembly is embedded in the front bumper assembly. The guide plate is embedded in a pit of the front bumper assembly and connected with the linear execution assembly so that the guide plate can be driven by the linear execution assembly to do reciprocating telescopic motion in the pit, and when the guide plate extends outwards from the pit, the outer surface of the guide plate is smoothly connected with the outer surface of the front bumper assembly. When the wind resistance coefficient of the vehicle is large, the guide plate is driven to move so that the outer surface of the guide plate can be smoothly connected with the outer surface of the front bumper assembly, and the whole vehicle performance is improved by reducing the wind resistance coefficient of the vehicle. When the wind resistance coefficient of the vehicle is small, the guide plate is driven to retract, so that the outer surface of the guide plate is embedded in the pit, the aesthetic modeling of the front bumper assembly of the vehicle can be displayed, and the aesthetic requirement of a user for the appearance of the vehicle is met.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the field of aerodynamics, in particular to a flow guide device, a front bumper assembly and a vehicle. BACKGROUND

[0002] At present, with the development of vehicle technology, the styling surface design of the outer side of the vehicle body is various. The factors such as the curvature, angle and curvature of the styling surface of the outer side of the vehicle body will cause the change of the wind resistance coefficient of the vehicle, thereby affecting the performance of the vehicle. For example, the styling of the two sides of the front bumper assembly has a significant influence on the wind resistance coefficient of the vehicle, and the proportion is at least 9%. However, when designing the styling surface of the two sides of the front bumper assembly of the vehicle, a styling with a pit is usually designed to reflect the three-dimensional sense and level sense of the front bumper assembly, so as to meet the aesthetic demand of the appearance of the vehicle.

[0003] However, the styling with the pit will cause the separation of the airflow passing through the two sides of the front bumper assembly, and the airflow cannot closely transit to the two sides of the vehicle body, thereby increasing the wind resistance coefficient of the vehicle. CONTENT OF THE UTILITY MODEL

[0004] The embodiment of the present application provides a flow guide device, a front bumper assembly and a vehicle, and aims to improve the technical problem that the styling design of the two sides of the front bumper assembly with pits will increase the wind resistance coefficient of the vehicle.

[0005] Based on the first aspect of the utility model, a flow guide device is provided, which comprises:

[0006] A linear execution assembly is embedded in the front bumper assembly.

[0007] A flow guide plate is embedded in the pit of the front bumper assembly and connected with the linear execution assembly, so as to drive the flow guide plate to make reciprocating extension and contraction movement in the pit through the linear execution assembly, and when the flow guide plate is extended outward from the pit, the outer surface of the flow guide plate is smoothly connected with the outer surface of the front bumper assembly.

[0008] In the content of the utility model, the flow guide plate is driven to make reciprocating extension and contraction movement in the pit through the linear execution assembly, so that in the case that the wind resistance coefficient of the vehicle is large, the flow guide plate is driven to move to make the outer surface of the flow guide plate smoothly connected with the outer surface of the front bumper assembly, thereby the wind resistance coefficient of the vehicle can be reduced and the performance of the vehicle can be improved. In the case that the wind resistance coefficient of the vehicle is small, the flow guide plate is driven to retract, so that the outer surface of the flow guide plate is embedded in the pit, thereby the aesthetic styling of the front bumper assembly of the vehicle can be displayed and the aesthetic demand of the appearance of the vehicle can be met.

[0009] An optional utility model content, the straight line execution assembly includes:

[0010] Rotary motion output device, the rotary motion output device is connected with the front bumper assembly;

[0011] Transmission mechanism, the transmission mechanism is fixedly connected with the output shaft of the rotary motion output device, and is in transmission connection with the deflector plate, so that the deflector plate is driven to make reciprocating extension and retraction movement in the pit when the rotary motion output device works.

[0012] In the utility model content, the rotary motion can be converted into linear motion to drive the deflector plate to make reciprocating extension and retraction movement through the conversion of the rotary motion output device and the cooperation mode of the rotary motion output device and the transmission mechanism, so that the motion control convenience of the deflector plate is improved on the basis of guaranteeing the simple structure of the straight line execution assembly.

[0013] An optional utility model content, the transmission mechanism includes:

[0014] Rotary gear, the rotary gear is coaxially fixed with the output shaft of the rotary motion output device;

[0015] Linear transmission gear, the linear transmission gear is engaged with the rotary gear and located on the deflector plate.

[0016] In the utility model content, the rotary gear and the linear transmission gear are engaged, the forward and reverse rotation of the rotary motion output device is converted into the reciprocating linear motion of the deflector plate, the structural complexity of the transmission mechanism can be reduced, and the production cost of the transmission mechanism can be reduced.

[0017] An optional utility model content, the linear transmission gear is slotted in the area close to the rotary gear of the deflector plate;Or,

[0018] The deflector device further includes a transmission member, the linear transmission gear is arranged on the transmission member, and the transmission member is installed on the deflector plate.

[0019] In the utility model content, the linear transmission gear can be directly machined on the deflector plate, the structure of the deflector device can be simplified, and the production cost of the deflector device can be reduced.

[0020] Or, the linear transmission gear is arranged on the transmission member, and the transmission member is installed on the deflector plate, so that the transmission member can be disassembled and replaced in the case that the linear transmission gear is worn out, and the maintenance convenience of the deflector device is improved.

[0021] Optionally, the transmission mechanism comprises a screw pair, the screw pair is fixedly connected with the guide plate, and the screw shaft of the screw pair is coaxially fixed with the output shaft of the rotary motion output device.

[0022] In the utility model, the transmission cooperation of the screw pair and the rotary motion output device can convert the forward and reverse rotation of the rotary motion output device into the reciprocating linear motion of the guide plate on the basis of simplifying the structure of the linear execution assembly, and can reduce the production cost of the transmission mechanism.

[0023] Optionally, the guide device further comprises a fixed support, the fixed support connects the rotary motion output device and the front bumper assembly.

[0024] In the utility model, the fixed support connects the rotary motion output device and the front bumper assembly, which can improve the disassembly and assembly convenience of the rotary motion output device, and can facilitate the positioning of the relative position between the rotary motion output device and the guide plate.

[0025] Optionally, the fixed support comprises a supporting part and a connecting part, the rotary motion output device is fixed on the supporting part, and the connecting part is connected with the front bumper assembly.

[0026] The supporting part and the connecting part are detachably connected.

[0027] The connecting part and the front bumper assembly are detachably connected.

[0028] In the utility model, the fixed support is divided into the supporting part and the connecting part, the disassembly and assembly convenience of the rotary motion output device is improved through the supporting part, and the convenience of disassembly or installation of the fixed support from the front bumper assembly is improved through the connecting part. The supporting part and the connecting part are fixed in a detachable manner, and / or the connecting part and the front bumper assembly are fixed in a detachable manner, which can further improve the replacement convenience of the rotary motion output device or the fixed support, and comprehensively optimize the product performance of the guide device.

[0029] Optionally, the connecting part is in surface contact with the front bumper assembly, and the width of the connecting part gradually increases from the supporting part to the front bumper assembly.

[0030] The width of the connecting part gradually increases from the direction close to the supporting part to the direction close to the front bumper assembly, so that the contact area of the connecting part and the front bumper assembly is increased, and the connection firmness of the connecting part and the front bumper assembly is improved.

[0031] Based on the second aspect of the utility model, a front bumper assembly is provided, which comprises the flow guide device and the front bumper according to any one of the utility model contents above, both sides of the front bumper are provided with pits, the linear execution assembly and the flow guide plate are respectively embedded in the pits, when the flow guide plate is elongated outward from the pit, the outer surface of the flow guide plate is smoothly connected with the outer surface of the front bumper assembly.

[0032] According to the utility model, the linear execution assembly drives the flow guide plate to make reciprocating extension and contraction in the pit, in the case that the wind resistance coefficient of the vehicle is large, the flow guide plate is driven to move so that the outer surface of the flow guide plate is smoothly connected with the outer surface of the front bumper assembly, so that the wind resistance coefficient of the vehicle can be reduced and the overall vehicle performance can be improved.

[0033] Based on the third aspect of the utility model, a vehicle is provided, which comprises the vehicle according to the utility model content above.

[0034] According to the utility model, the linear execution assembly drives the flow guide plate to make reciprocating extension and contraction in the pit, in the case that the wind resistance coefficient of the vehicle is large, the flow guide plate is driven to move so that the outer surface of the flow guide plate is smoothly connected with the outer surface of the front bumper assembly, so that the wind resistance coefficient of the vehicle can be reduced and the overall vehicle performance can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of a flow guide device provided by an embodiment of the application.

[0036] Figure 2 It is a structural enlarged schematic diagram of a flow guide device provided by an embodiment of the application.

[0037] Figure 3 It is a structural schematic diagram of a front bumper assembly provided by an embodiment of the application.

[0038] Figure 4 This is a schematic diagram of the structure of a guide vane in a retracted state according to an embodiment of this application;

[0039] Figure 5 This is a schematic diagram of the structure of a guide plate in an extended state according to an embodiment of this application;

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Linear actuator; 11. Rotary motion output device; 12. Transmission mechanism; 121. Rotary gear; 122. Linear transmission gear; 2. Guide plate; 3. Fixed bracket; 31. Support part; 32. Connecting part; 4. Front bumper; 401. Dent. Detailed Implementation

[0042] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0043] This application provides a flow guiding device, referring to... Figures 1-5 As shown, the airflow guiding device may include a linear actuator 1 and a guide plate 2. The linear actuator 1 is embedded in the front bumper assembly. The guide plate 2 is embedded in a recess 401 of the front bumper assembly and is connected to the linear actuator 1, so that the linear actuator 1 drives the guide plate 2 to reciprocate and extend within the recess 401. When the guide plate 2 extends outward from the recess 401, the outer surface of the guide plate 2 smoothly connects with the outer surface of the front bumper assembly.

[0044] In this embodiment, the linear actuator 1 refers to a component that outputs linear motion. The front bumper assembly can be understood as a collective term for various functional components integrated at the front end of a vehicle. For example, the front bumper assembly may include components such as the front bumper 4, grille, and buffer material layer, which typically have functions such as protecting the front end of the vehicle and enhancing its appearance. For example, the linear actuator 1 may be embedded in recesses 401 on both sides of the front bumper 4, near the corners of the front bumper 4. The deflector 2 is embedded in the recesses 401 and connected to the linear motion output end of the linear actuator 1. The linear motion output by the linear actuator 1 can be consistent with the length direction of the vehicle body.

[0045] Therefore, when the linear actuator 1 is working, it can drive the guide plate 2 to reciprocate and extend along the recess 401. For example, refer to Figure 4As shown, when the deflector 2 is retracted inwardly in the recess 401, i.e. the deflector 2 moves linearly towards the tail of the vehicle, the outer surface of the deflector 2 cooperates with the side wall of the recess 401 to form a concave modeling surface on both sides of the front bumper 4 at the front end of the vehicle, highlighting the three-dimensional and hierarchical sense of the front bumper 4, and meeting the user's aesthetic demand for the appearance of the vehicle. Referring to Figure 5 As shown, when the deflector 2 is extended outwardly in the recess 401, i.e. the deflector 2 moves linearly away from the tail of the vehicle, the outer surface of the deflector 2 smoothly connects with the outer surface of the front bumper 4. Wherein, the smooth connection can be understood as that the contact area between the deflector 2 and the front bumper 4 is smoothly transitioned. For example, the curvature of the contact area is continuously changed and has no obvious boundary. Thus, the outer surface of the deflector 2 and the outer surface of the front bumper 4 form an integral whole in appearance, and the recess 401 is completely filled by the deflector 2.

[0046] In the case that the airflow flows through the bumper, the airflow at the recess 401 can be guided by the deflector 2, and the contact area between the airflow and the two sides of the front bumper 4 can be increased, and the airflow separation area is moved forward. A part of the airflow is prevented from entering the recess 401, and a part of the airflow directly impacts the corner area of the front bumper 4 or the raised decorative part at the fog lamp, so that the airflow is guided to the two sides of the vehicle body, thereby avoiding the separation of the airflow at the recess 401, reducing the drag coefficient of the vehicle, and improving the aerodynamic performance of the front bumper assembly.

[0047] In some embodiments, in the case that the drag coefficient of the vehicle is large, the deflector 2 is driven to move so that the outer surface of the deflector 2 smoothly connects with the outer surface of the front bumper assembly, thereby reducing the drag coefficient of the vehicle and improving the overall vehicle performance. In some embodiments, in the case that the drag coefficient of the vehicle is small, the deflector 2 is driven to retract so that the outer surface of the deflector 2 is embedded in the recess 401, thereby showing the aesthetic modeling of the front bumper assembly of the vehicle and meeting the user's aesthetic demand for the appearance of the vehicle. Thus, the modeling aesthetics and the drag performance of the front bumper assembly can be considered.

[0048] Embodiment one

[0049] Referring to Figure 1 and Figure 2As shown, the linear actuator 1 may include a rotary motion output device 11 and a transmission mechanism 12, wherein the rotary motion output device 11 is connected to the front bumper assembly. The transmission mechanism 12 is fixedly connected to the output shaft of the rotary motion output device 11 and is drively connected to the guide plate 2, so as to drive the guide plate 2 to reciprocate and extend within the recess 401 when the rotary motion output device 11 is working.

[0050] In this embodiment, the linear actuator 1 may include a rotary motion output device 11 and a transmission mechanism 12. The rotary motion output device 11 refers to a device that outputs rotary motion; for example, it may include, but is not limited to, a stepper motor and a servo motor. The transmission mechanism 12 refers to a combination of devices that transmit power. In this application, the transmission mechanism 12 is used to convert rotary motion into linear motion. The power input end of the transmission mechanism 12 can be fixedly connected to the output shaft of the rotary motion output device 11, and the power output end of the transmission mechanism 12 is drively connected to the guide plate 2. Thus, when the rotary motion output device 11 is working, it inputs rotary motion to the transmission mechanism 12, and through the transmission mechanism 12, converts the power to output linear motion, thereby driving the guide plate 2 to perform synchronous linear motion.

[0051] In some embodiments, when the rotary motion output device 11 rotates forward, it can drive the guide plate 2 to retract within the recess 401. In other embodiments, when the rotary motion output device 11 rotates in reverse, it can drive the guide plate 2 to extend within the recess 401. Thus, the reciprocating extension and retraction of the guide plate 2 within the recess 401 can be driven by the forward and reverse rotation of the rotary motion output device 11 and the power conversion of the transmission mechanism 12.

[0052] By changing the rotation direction of the rotary motion output device 11, the extension and retraction of the guide plate 2 can be achieved, thereby improving the ease of motion control of the guide plate 2 while ensuring the structural simplicity of the linear actuator 1.

[0053] In some alternative embodiments, the transmission mechanism 12 may include a rotary gear 121 and a linear transmission gear 122. The rotary gear 121 is coaxially fixed with the output shaft of the rotary motion output device 11. The linear transmission gear 122 meshes with the rotary gear 121 and is located on the guide plate 2.

[0054] In the embodiments of the present application, the coaxial fixing can be understood as that the rotating gear 121 is fixedly connected with the output shaft of the rotating motion output device 11, and the central axis of the rotating gear 121 coincides with the central axis of the output shaft of the rotating motion output device 11. For example, the rotating gear 121 and the output shaft of the rotating motion output device 11 can be fixedly connected through a key connection, an interference fit connection, a shaft coupling connection or the like. A person skilled in the art can determine the specific connection mode according to the actual design requirements, which is not limited herein. The straight-line transmission teeth 122 are engaged with the rotating gear 121, wherein the straight-line transmission teeth 122 can be understood as transmission teeth arranged along the length direction of the vehicle body.

[0055] In the case that the rotating gear 121 rotates synchronously with the rotating motion output device 11, the rotating gear 121 drives the straight-line transmission teeth 122 engaged therewith to move linearly, and drives the deflector 2 to move reciprocatingly. Thus, the structural complexity of the transmission mechanism 12 can be reduced, and the production cost of the transmission mechanism 12 can be reduced.

[0056] In some optional embodiments, the straight-line transmission teeth 122 are formed by being slotted in the area of the deflector 2 close to the rotating gear 121. Alternatively, the deflector device further comprises a transmission member, and the straight-line transmission teeth 122 are arranged on the transmission member, wherein the transmission member is mounted on the deflector 2.

[0057] In the embodiments of the present application, the straight-line transmission teeth 122 can be directly machined on the deflector 2. For example, tooth grooves are arranged at intervals on the area of the deflector 2 close to the rotating gear 121, so that the straight-line transmission teeth 122 are directly machined on the side surface of the deflector 2 located in the recess 401. Thus, the structure of the deflector device can be simplified, and the production cost of the deflector device can be further reduced.

[0058] In other embodiments, the deflector device can further comprise a transmission member mounted on the side surface of the deflector 2 located in the recess 401, and the straight-line transmission teeth 122 are arranged on the transmission member, for example, the transmission member can be a rack or the like. Through the split design of the straight-line transmission teeth 122 and the deflector 2, the transmission member can be disassembled and replaced from the deflector 2 in the case that the straight-line transmission teeth 122 are worn or damaged, thereby improving the maintenance convenience of the deflector device.

[0059] In some optional embodiments, with reference to Figure 1 and Figure 2As shown, the flow guide device further comprises a fixed support 3, which connects the rotary motion outputter 11 and the front bumper assembly.

[0060] In the embodiments of the present application, the flow guide device can further comprise a fixed support 3, wherein the fixed support 3 is arranged in the recess 401 and located between the rotary motion outputter 11 and the front bumper assembly. For example, one end of the fixed support 3 can be fixedly connected with the base of the rotary motion outputter 11, and the other end of the fixed support 3 is fixedly connected with the front bumper 4.

[0061] The adoption of the fixed support 3 to connect the rotary motion outputter 11 and the front bumper assembly can improve the convenience of disassembly and assembly of the rotary motion outputter 11, and can facilitate the positioning of the relative position between the rotary motion outputter 11 and the flow guide plate 2. For example, the adoption of the fixed support 3 as an intermediate connecting piece can reduce the connection accuracy between the front bumper 4 and the rotary motion outputter 11.

[0062] In some optional embodiments, referring to Figure 1 and Figure 2 As shown, the fixed support 3 comprises a support portion 31 and a connecting portion 32, the rotary motion outputter 11 is fixed on the support portion 31, and the connecting portion 32 is connected with the front bumper assembly. Wherein, the support portion 31 and the connecting portion 32 are detachably connected. And / or, the connecting portion 32 and the front bumper assembly are detachably connected.

[0063] In the embodiments of the present application, the fixed support 3 can comprise a support portion 31 and a connecting portion 32, the support portion 31 is used to mount the rotary motion outputter 11. The connecting portion 32 is used to connect with the front bumper assembly. In some embodiments, the support portion 31 and the connecting portion 32 can be detachably connected to form a fixed connection. For example, the detachable connection can include but is not limited to threaded connection, screw connection, clamping and riveting connection and the like. The detachable connection of the support portion 31 and the connecting portion 32 can improve the convenience of disassembly and assembly of the rotary motion outputter 11.

[0064] The detachable connection of the connecting portion 32 and the front bumper assembly can improve the convenience of disassembly or installation of the fixed support 3 from the front bumper assembly. In summary, the convenience of replacement of the rotary motion outputter 11 or the fixed support 3 can be further improved, and the product performance of the flow guide device is comprehensively optimized.

[0065] In some embodiments, referring to Figure 2As shown, the support part 31 can be arranged around the circumference of the output shaft of the rotary motion output device 11. Thus, the base of the rotary motion output device 11 can be fixed at multiple points in the circumferential direction, thereby improving the stability of the connection of the rotary motion output device 11 and reducing the amount of shaking of the rotary motion output device 11 when in operation.

[0066] When the connecting part 32 and the support part 31 are detachably connected, the connecting part 32 and the front bumper assembly can be non-detachably connected. When the connecting part 32 and the support part 31 are non-detachably connected, the connecting part 32 and the front bumper assembly can be detachably connected. When the connecting part 32 and the support part 31 are detachably connected, the connecting part 32 and the front bumper assembly can be detachably connected, which is not limited herein.

[0067] In some optional embodiments, referring to Figure 2 As shown, the connecting part 32 is in surface contact with the front bumper assembly, and the width of the connecting part 32 gradually increases from the direction close to the support part 31 to the direction close to the front bumper assembly.

[0068] In the embodiments of the present application, the connecting part 32 can be in surface contact with the front bumper assembly. For example, the connecting part 32 can be a plate-shaped structure. The width W of the connecting part 32 gradually increases from the direction close to the support part 31 to the direction close to the front bumper assembly. Thus, the contact area between the connecting part 32 and the front bumper assembly is increased, thereby improving the connection stability of the connecting part 32 and the front bumper assembly.

[0069] Working process: in the case of displaying the modeling surface of the front bumper assembly, the rotary motion output device 11 can be made to rotate forward, and the deflector 2 can be driven to retract in the pit 401. In the case of reducing the wind resistance coefficient of the vehicle, the rotary motion output device 11 can be made to rotate reversely, and the deflector 2 can be driven to extend in the pit 401. The outer surface of the deflector 2 is smoothly connected with the outer surface of the front bumper 4. Thus, the outer surface of the deflector 2 and the outer surface of the front bumper 4 form an integral whole in appearance, and the pit 401 is completely filled by the deflector 2. Air separation at the pit 401 can be avoided, and the wind resistance coefficient of the vehicle is reduced, which is beneficial to improve the aerodynamic performance of the front bumper assembly. For example, the deflector can reduce the wind resistance by about 20 count. Count is a unit for measuring small changes in the wind resistance coefficient, and 1 count can be 0.001 of the wind resistance coefficient.

[0070] Embodiment two

[0071] The straight line execution assembly 1 can include a rotary motion output device 11 and a transmission mechanism 12, wherein the rotary motion output device 11 is connected with the front bumper assembly. The transmission mechanism 12 is fixedly connected with an output shaft of the rotary motion output device 11 and is in transmission connection with the deflector 2, so as to drive the deflector 2 to make reciprocating extension and retraction movement in the pit 401 when the rotary motion output device 11 works.

[0072] In the embodiment of the application, the straight line execution assembly 1 can include a rotary motion output device 11 and a transmission mechanism 12, wherein the rotary motion output device 11 is used for outputting rotary motion, for example, the rotary motion output device 11 can include but is not limited to a stepper motor and a servo motor and the like. The transmission mechanism 12 is used for converting rotary motion into straight line motion. A power input end of the transmission mechanism 12 can be fixedly connected with an output shaft of the rotary motion output device 11, and a power output end of the transmission mechanism 12 is in transmission connection with the deflector 2. Thus, when the rotary motion output device 11 works, rotary motion is input to the transmission mechanism 12, and power conversion is performed by the transmission mechanism 12 to output straight line motion, so as to drive the deflector 2 to make synchronous straight line motion.

[0073] In some embodiments, when the rotary motion output device 11 rotates forward, the deflector 2 can be driven to make retraction movement in the pit 401. In another embodiment, when the rotary motion output device 11 reverses, the deflector 2 can be driven to make elongation movement in the pit 401. Thus, by forward and reverse rotation of the rotary motion output device 11 and power conversion of the transmission mechanism 12, the deflector 2 can be driven to make reciprocating extension and retraction movement in the pit 401.

[0074] By changing the rotation direction of the rotary motion output device 11, extension and retraction of the deflector 2 can be realized, so as to improve the motion control convenience of the deflector 2 on the basis of ensuring simple structure of the straight line execution assembly 1.

[0075] In some embodiments, the transmission mechanism 12 can include a screw pair, a nut of the screw pair is fixedly connected with the deflector 2, and a screw shaft of the screw pair is coaxially fixed with the output shaft of the rotary motion output device 11.

[0076] In the embodiment of the present application, the transmission mechanism 12 can include a screw pair, wherein the screw pair is also called screw nut pair, which is a common mechanical transmission component, used for converting rotary motion into linear motion, or converting linear motion into linear motion. The nut of the screw pair is fixedly connected with the deflector plate 2, and the screw shaft of the screw pair is coaxially fixed with the output shaft of the rotary motion output device 11. Coaxial fixing can be understood as that the screw shaft of the screw pair is fixed with the output shaft of the rotary motion output device 11, and the central axis of the screw shaft coincides with the central axis of the output shaft of the rotary motion output device 11. For example, the screw shaft and the rotary motion output device 11 can be connected by a shaft coupling or the like.

[0077] By adopting the transmission cooperation between the screw pair and the rotary motion output device 11, the forward and reverse rotation of the rotary motion output device 11 can be converted into the reciprocating linear motion of the deflector plate 2 on the basis of simplifying the structure of the linear execution assembly 1, and the production cost of the transmission mechanism 12 can be reduced.

[0078] In other embodiments, the end of the screw shaft of the screw pair away from the output shaft of the rotary motion output device 11 can also be provided with a connecting piece connected with the front bumper assembly, wherein the connecting piece can be rotatably connected with the screw shaft, so as to improve the rotation stability of the screw shaft.

[0079] The embodiment of the present application also provides a front bumper assembly, which includes the deflector device and the front bumper 4 according to any one of the above-mentioned embodiments, and the linear execution assembly 1 and the deflector plate 2 are respectively embedded in the recess 401 of the front bumper 4. When the deflector plate 2 is elongated outward from the recess 401, the outer surface of the deflector plate 2 is smoothly connected with the outer surface of the front bumper 4.

[0080] The embodiment of the present application also provides a vehicle, which includes the front bumper assembly according to the above-mentioned embodiments.

[0081] In some optional embodiments, the vehicle can further comprise a speed sensor and an electronic control unit (ECU), which can also be referred to as a driving computer or an automobile electronic control unit. The rotating motion output device 11 is electrically connected to the electronic control unit. For example, a reference voltage associated with a speed setting value can be set in advance. When the vehicle speed detected by the comparator is greater than the speed setting value, the rotating motion output device 11 can be driven in forward rotation by the electronic control unit. Thus, in the case where the wind resistance coefficient of the vehicle is large, the guide plate 2 can be driven to move so that the outer surface of the guide plate 2 is smoothly connected to the outer surface of the front bumper assembly, thereby reducing the wind resistance coefficient of the vehicle and improving the overall performance of the vehicle.

[0082] When the vehicle speed detected by the comparator is less than or equal to the speed setting value, the rotating motion output device 11 can be driven in reverse rotation by the electronic control unit. Thus, in the case where the wind resistance coefficient of the vehicle is small, the guide plate 2 can be driven to retract so that the outer surface of the guide plate 2 is embedded in the recess 401, thereby showing the aesthetic appearance of the front bumper assembly of the vehicle and meeting the user's aesthetic demand for the appearance of the vehicle. Thus, the aesthetic appearance and wind resistance performance of the front bumper assembly can be considered.

[0083] In summary, the embodiments of the present application provide a guide device, a front bumper assembly and a vehicle. The guide plate 2 can be driven to move reciprocally in the recess 401 by the linear execution assembly 1. In the case where the wind resistance coefficient of the vehicle is large, the guide plate 2 can be driven to move so that the outer surface of the guide plate 2 is smoothly connected to the outer surface of the front bumper assembly, thereby reducing the wind resistance coefficient of the vehicle and improving the overall performance of the vehicle. In the case where the wind resistance coefficient of the vehicle is small, the guide plate 2 can be driven to retract so that the outer surface of the guide plate 2 is embedded in the recess 401, thereby showing the aesthetic appearance of the front bumper assembly of the vehicle and meeting the user's aesthetic demand for the appearance of the vehicle.

[0084] Term explanation

[0085] In the present application, the linear execution assembly 1 refers to an assembly outputting linear motion.

[0086] In the present application, the rotating motion output device 11 refers to a device outputting rotating motion.

[0087] In the present application, the transmission mechanism 12 refers to a combination of devices transmitting power.

[0088] In the present application, multiple refers to two or more.

[0089] In this application, unless otherwise clearly specified, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0090] The terms "first", "second", "third", "fourth" and the like (if any) in this application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0091] The term "and / or" in this application is only a description of the relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the front and rear associated objects.

[0092] If there is no special description, all the steps of this application can be performed in sequence or randomly. For example, the method comprises steps A and B, which means that the method can comprise steps A and B in sequence, or steps B and A in sequence. For example, the method also comprises step C, which means that step C can be added to the method in any order, for example, the method can comprise steps A, B and C, or steps A, C and B, or steps C, A and B, etc.

[0093] The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flow directing device, characterized in that, The flow guide device comprises: a linear execution assembly (1) embedded in a front bumper assembly; a flow guide plate (2) embedded in a recess (401) of the front bumper assembly and connected with the linear execution assembly (1) to drive the flow guide plate (2) to make a reciprocating extension and retraction movement in the recess (401) through the linear execution assembly (1), and when the flow guide plate (2) is extended out of the recess (401), the outer surface of the flow guide plate (2) is smoothly connected with the outer surface of the front bumper assembly.

2. The flow directing device of claim 1, wherein, The linear execution assembly (1) comprises: a rotary motion output device (11) connected with the front bumper assembly; a transmission mechanism (12) fixedly connected with the output shaft of the rotary motion output device (11) and drivingly connected with the flow guide plate (2) to drive the flow guide plate (2) to make a reciprocating extension and retraction movement in the recess (401) when the rotary motion output device (11) is working.

3. The flow directing device of claim 2, wherein, The transmission mechanism (12) comprises: a rotary gear (121) coaxially fixed with the output shaft of the rotary motion output device (11); a linear transmission tooth (122) engaged with the rotary gear (121) and located on the flow guide plate (2).

4. The flow directing device of claim 3, wherein, The linear transmission tooth (122) is formed by slotting in the area of the flow guide plate (2) close to the rotary gear (121); or, The flow guide device further comprises a transmission member on which the linear transmission tooth (122) is arranged, wherein the transmission member is mounted on the flow guide plate (2).

5. The flow directing device of claim 2, wherein, The transmission mechanism (12) comprises a screw pair, the nut of the screw pair is fixedly connected with the flow guide plate (2), and the screw shaft of the screw pair is coaxially fixed with the output shaft of the rotary motion output device (11).

6. The flow directing device of claim 2, wherein, The flow guide device further comprises a fixed support (3) connected with the rotary motion output device (11) and the front bumper assembly.

7. The flow directing device of claim 6, wherein, The fixed support (3) comprises a support part (31) and a connecting part (32), the rotary motion output device (11) is fixed on the support part (31), and the connecting part (32) is connected with the front bumper assembly; wherein, the support part (31) and the connecting part (32) are detachably connected; and / or, the connecting part (32) and the front bumper assembly are detachably connected.

8. The flow directing device of claim 7, wherein, The connecting part (32) is in surface contact with the front bumper assembly, and the width of the connecting part (32) gradually increases from the direction close to the support part (31) to the direction close to the front bumper assembly.

9. A front bumper assembly characterized in that, The front bumper assembly comprises the flow guide device as claimed in any one of claims 1-8 and a front bumper (4), both sides of the front bumper (4) are provided with recesses (401), the straight line execution assembly (1) and the flow guide plate (2) are respectively embedded in the recesses (401), when the flow guide plate (2) is elongated outward from the recesses (401), the outer surface of the flow guide plate (2) and the outer surface of the front bumper (4) are smoothly connected.

10. A vehicle characterized by comprising: The vehicle comprises the front bumper assembly as claimed in claim 9.

Images