An active intake grille for a vehicle

Abstract

The present invention relates to the technical field of automotive grilles, and discloses an active automotive intake grille, which includes: a mounting frame provided with an air inlet; a plurality of blades, each having a blocking position and a retracted position, and the plurality of blades can all be switched between their retracted positions and their blocking positions. When the blades are switched to their blocking positions, the blades block at the air inlet; when the blades are switched to the retracted positions, the blades move inward away from the air inlet; a linkage mechanism connecting the mounting frame and the plurality of blades; a driving mechanism disposed on the mounting frame and movably connected to the linkage mechanism, and the driving mechanism includes a driving motor; the driving motor can drive the plurality of blades to stepwise switch from their respective blocking positions to their respective retracted positions, and the driving motor can drive the plurality of blades to stepwise switch from their respective retracted positions to their respective blocking positions. The advantages of the present invention are that through one driving motor, multiple blades can be driven to stepwise retract and stepwise unfold, so as to control the size of the air inlet, and the overall structure is simple and the cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive grilles, and particularly to an active intake grille for automobiles. Background Art

[0002] With the rapid development of automotive diversification and personalization, active intake grilles have also evolved continuously with the development of the trend of the times. In particular, there are various designs evolved from external active intake grilles, with endless personalized designs, bringing a more technological and visual experience to the front of the car for customers.

[0003] In the prior art, if the active intake grille has multi-blade time-sharing movement, most of them use multiple motors to control the opening and closing of different blades. Although the use of multiple motors realizes the function of multi-blade time-sharing movement, the cost will rise sharply, and the required layout space will also increase exponentially. That is, for the active intake grille of an automobile in the prior art, multiple motors are used to control the multi-blade time-sharing movement, which not only has a high cost, but also the installation space occupied by multiple motors is relatively large. Summary of the Invention

[0004] Aiming at the above deficiencies existing in the prior art, the technical problem to be solved by the present invention is to provide an active intake grille for automobiles that has a low cost, occupies a small installation space, and can use a single motor to control the sequential opening and closing of multiple blades.

[0005] The technical solution adopted by the present invention to solve its technical problems is to provide an active intake grille for automobiles, including:

[0006] A mounting bracket, on which an air inlet is provided;

[0007] Multiple blades, movably arranged at the air inlet. Each of the multiple blades has a blocking position and a retracted position, and each of the multiple blades can switch between its retracted position and its blocking position. When the blade switches to its blocking position, the blade blocks at the air inlet; when the blade switches to its retracted position, the blade moves inwardly away from the air inlet.

[0008] A link mechanism, connecting the mounting bracket and the multiple blades;

[0009] A driving mechanism, arranged on the mounting bracket and movably connected to the link mechanism. The driving mechanism includes a driving motor; the driving motor can drive the multiple blades to sequentially switch from their respective blocking positions to their respective retracted positions, and the driving motor can drive the multiple blades to sequentially switch from their respective retracted positions to their respective blocking positions.

[0010] Further, the driving mechanism includes a plurality of active dials, and the driving motor has a driving rotating shaft. The plurality of active dials are arranged along the axial direction of the driving rotating shaft, and the driving motor can drive the plurality of active dials to rotate;

[0011] The connecting rod mechanism includes a plurality of active connecting rods. One end of the active connecting rod is rotatably connected to the blade, and a sprocket is provided at the other end of the active connecting rod. The active dial is movably connected to the sprocket.

[0012] Further, a pin is provided on the active dial, and a plurality of pin grooves are provided on the sprocket. When the pin enters the pin groove, the active dial can drive the sprocket to rotate.

[0013] Further, a convex arc wall is provided on the active dial, and a plurality of concave arc walls are provided on the sprocket along its circumference. The pin groove is provided between two adjacent concave arc walls;

[0014] When the pin slides into the pin groove, the convex arc wall disengages from the concave arc wall; when the pin slides out of the pin groove, the convex arc wall is movably attached to the concave arc wall.

[0015] Further, the plurality of blades include a first blade, a second blade and a third blade. When the first blade, the second blade and the third blade are all switched to their respective shielding positions, the first blade, the second blade and the third blade shield the air inlet from top to bottom in sequence;

[0016] The plurality of active connecting rods include a first active connecting rod connecting the first blade, a second active connecting rod connecting the second blade and a third active connecting rod connecting the third blade; a first rotating shaft is provided on the mounting bracket. The first active connecting rod, the second active connecting rod and the third active connecting rod are all rotatably arranged on the first rotating shaft, and each is provided with a sprocket;

[0017] The plurality of active dials include a first active dial, a second active dial and a third active dial. The first active dial is movably connected to the sprocket on the first active connecting rod; the second active dial is movably connected to the sprocket on the second active connecting rod; the third active dial is movably connected to the sprocket on the third active connecting rod.

[0018] Further, a pin is provided on each of the first active dial, the second active dial and the third active dial. Among them, the phase angles of the pins on the first active dial, the second active dial and the third active dial are different to drive the first blade, the second blade and the third blade step by step.

[0019] Further, the linkage mechanism includes a first driven link, a second driven link, and a third driven link;

[0020] A second rotating shaft is provided on the mounting frame, and the second rotating shaft is parallel to the first rotating shaft. One ends of the first driven link, the second driven link, and the third driven link are rotatably arranged on the second rotating shaft. The other end of the first driven link is hinged to the first blade, the other end of the second driven link is hinged to the second blade, and the other end of the third driven link is hinged to the third blade.

[0021] Further, when the first blade, the second blade, and the third blade are all switched to their respective retracted positions, the second blade is on the back side of the first blade, and the third blade is on the back side of the second blade.

[0022] Further, when the drive motor drives the first blade, the second blade, and the third blade to stepwise switch from their respective blocking positions to their respective retracted positions: after the third blade is first switched to its retracted position, the second blade is then switched to its retracted position, and finally the first blade is switched to its retracted position.

[0023] Further, a surrounding frame is provided along the circumference of the air inlet on the inner side of the mounting frame, and the drive rotating shaft, the first rotating shaft, and the second rotating shaft are rotatably arranged on the surrounding frame.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] In the present invention, the linkage mechanism connects the mounting frame and multiple blades, and the drive motor is movably connected to the linkage mechanism. By one drive motor, multiple blades can be driven to sequentially step away from the air inlet (i.e., from their respective blocking positions) and switch to their respective retracted positions, that is, the air intake efficiency of the air inlet is controlled by one drive motor; when it is necessary to block the air inlet, the multiple blades can also be driven by the one drive motor to sequentially step to their respective blocking positions, that is, the multiple blades are sequentially blocked at the air inlet. The overall structure of the active air intake grille of this solution is simple, and one drive motor can achieve the time-sharing movement (opening and closing) of multiple blades, and the structural stability is good when the blades are in their respective blocking positions or retracted positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a front view of the active air intake grille of the present invention for an automobile;

[0027] Figure 2 is a rear view of the active air intake grille of the present invention for an automobile;

[0028] Figure 3It is a schematic structural diagram of an active intake grille for an automobile;

[0029] Figure 4 It is Figure 3 A schematic structural diagram after removing the surrounding frame;

[0030] Figure 5 It is Figure 4 A partial enlarged view of part A in

[0031] Figure 6 A schematic structural diagram of the first active link, the second active link and the third active link;

[0032] Figure 7 A schematic diagram of the third blade of the active intake grille of the automobile switched to its retracted position;

[0033] Figure 8 A schematic diagram of the third and second blades of the active intake grille of the automobile switched to their retracted positions;

[0034] Figure 9 A schematic diagram after the third, second and first blades of the active intake grille of the automobile are all switched to their respective retracted positions.

[0035] In the figure:

[0036] 1. Mounting bracket; 10. Air inlet; 11. Surrounding frame; 111. First rotating shaft; 112. Second rotating shaft;

[0037] 2. Blade; 21. First blade; 22. Second blade; 23. Third blade;

[0038] 3. Link mechanism; 30. Geneva wheel; 301. Pin slot; 302. Concave arc wall; 31. First active link; 32. Second active link; 33. Third active link; 34. First driven link; 35. Second driven link; 36. Third driven link;

[0039] 4. Driving mechanism; 40. Driving motor; 401. Driving rotating shaft; 41. First active dial; 42. Second active dial; 43. Third active dial; 411. Dial pin; 412. Convex arc wall. Detailed implementation mode

[0040] The following are specific embodiments of the present invention and, in conjunction with the accompanying drawings, further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0041] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0043] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0045] As Figures 1 - 3 and Figures 7 - 9 shown, an active intake grille for an automobile mainly includes: a mounting frame 1, blades 2, a link mechanism 3, and a driving mechanism 4; the blades 2 mainly include: a first blade 21, a second blade 22, and a third blade 23; the link mechanism 3 mainly includes: a first active link 31, a second active link 32, a third active link 33, a first driven link 34, a second driven link 35, and a third driven link 36; the driving mechanism 4 mainly includes: a driving motor 40 and a plurality of active dials arranged on the driving rotating shaft 401 of the driving motor 40.

[0046] An air inlet 10 is provided on the mounting bracket 1. Specifically, a surrounding frame 11 is provided along the circumference of the air inlet 10 on the inner side of the mounting bracket 1. The surrounding frame 11 can not only strengthen the strength of the mounting bracket 1 but also facilitate the installation of other components thereon. The driving rotating shaft 401, the first rotating shaft 111, and the second rotating shaft 112 are rotatably arranged on the surrounding frame 11. The three rotating shafts are arranged in parallel, and the three rotating shafts are parallel to each other.

[0047] Multiple blades are movably arranged at the air inlet 10. Each of the multiple blades has a blocking position and a retracted position, and the multiple blades can all be switched between their retracted positions and their blocking positions. When the blade 2 is switched to its blocking position, the blade 2 blocks the air inlet 10; when the blade 2 is switched to its retracted position, the blade 2 moves inward away from the air inlet 10. Specifically, the multiple blades 2 in this embodiment include a first blade 21, a second blade 22, and a third blade 23. When the first blade 21, the second blade 22, and the third blade 23 are all switched to their respective blocking positions, the first blade 21, the second blade 22, and the third blade 23 block the air inlet 10 from top to bottom in sequence. In addition to setting three movable blades in this embodiment, fixed blades can also be set, that is, the blades are fixedly installed at the air inlet 10 and are always in a closed state. When the first blade 21, the second blade 22, and the third blade 23 are all switched to their respective blocking positions, that is, the first blade 21, the second blade 22, and the third blade 23 block the air inlet 10 from top to bottom in sequence, completely blocking the air inlet 10.

[0048] During use, in the cold winter, the environmental temperature is relatively low. In this automotive active air intake grille, the three blades are all switched to the blocking positions to completely block the air inlet 10, preventing the surrounding environment from taking away the heat of the engine, shortening the warm-up time, and reducing fuel consumption or power consumption. In addition, during the driving of the vehicle, when the engine temperature is balanced, completely blocking the air inlet 10 can reduce the wind resistance during vehicle driving. When only a small amount of air intake is required, only the lowermost third blade 23 needs to be controlled to open (switched to the retracted position). If a larger air intake is required, the third blade 23 and the second blade 22 can be controlled to open (both are switched to the retracted position). If the maximum air intake is required, the third blade 23, the second blade 22, and the first blade 21 can be controlled to all open (all three are switched to the retracted position).

[0049] Such as Figures 5 - 9As shown, the linkage mechanism 3 connects the mounting bracket 1 and multiple blades. The linkage mechanism 3 mainly includes multiple driving linkages and multiple driven linkages. The driving linkages are driven by a driving motor 40. During the process of the driving linkages driving the blades, they will drive the driven linkages to move, so the two are respectively called the driving linkages and the driven linkages. Specifically, the multiple driving linkages include a first driving linkage 31 rotatably connected to the first blade 21, a second driving linkage 32 rotatably connected to the second blade 22, and a third driving linkage 33 rotatably connected to the third blade 23. A first rotating shaft 111 is provided on the mounting bracket 1. The first driving linkage 31, the second driving linkage 32, and the third driving linkage 33 are all rotatably arranged on the first rotating shaft 111, and a sheave 30 is provided on each of the first driving linkage 31, the second driving linkage 32, and the third driving linkage 33; the sheave 30 on the driving linkage can be integrally provided with it or separately provided. When it is separately provided, the two need to be fixedly connected together to ensure their linkage.

[0050] The multiple driven linkages in the linkage mechanism 3 include a first driven linkage 34, a second driven linkage 35, and a third driven linkage 36. A second rotating shaft 112 is provided on the mounting bracket 1. The second rotating shaft 112 is parallel to the first rotating shaft 111. One ends of the first driven linkage 34, the second driven linkage 35, and the third driven linkage 36 are all rotatably arranged on the second rotating shaft 112. The other end of the first driven linkage 34 is hinged to the first blade 21, the other end of the second driven linkage 35 is hinged to the second blade 22, and the other end of the third driven linkage 36 is hinged to the third blade 23. Equivalently, the first blade 21, the first driven linkage 34, and the first driving linkage 31 form a four-bar linkage 3; the second blade 22, the second driven linkage 35, and the second driving linkage 32 form a four-bar linkage 3; the third blade 23, the third driven linkage 36, and the third driving linkage 33 form a four-bar linkage 3. When the three driving linkages drive the three blades to move respectively, their movements are not simple rotations to prevent movement interference between them.

[0051] The driving mechanism 4 is arranged on the mounting frame 1 and is movably connected to the link mechanism 3. The driving mechanism 4 includes a driving motor 40. The driving motor 40 can drive multiple blades to stepwise switch from their respective shielding positions to their respective retracted positions, and the driving motor 40 can drive multiple blades to stepwise switch from their respective retracted positions to their respective shielding positions. It should be noted that the process of the driving motor 40 driving multiple blades to move step by step is as follows: when driving the blades to drive three blades to switch from the shielding position to the retracted position, the driving motor 40 first drives the third blade 23 to the retracted position of the third blade 23, and then starts to drive the second blade 22 to the retracted position of the second blade 22. After the second blade 22 finishes switching to the retracted position, finally drives the first blade 21 to the retracted position of the first blade 21. That is, in this embodiment, a single driving motor 40 enables the three blades to achieve time-sharing movement. Moreover, when the first blade 21, the second blade 22, and the third blade 23 are all switched to their respective retracted positions, the second blade 22 is on the back side of the first blade 21, and the third blade 23 is on the back side of the second blade 22. After retraction, the three blades occupy a small space and all leave from the direction of air flow, avoiding affecting the intake of the air inlet 10.

[0052] During actual use, the link mechanism 3 of this embodiment connects the mounting frame 1 and multiple blades. The driving motor 40 is movably connected to the link mechanism 3. Through a single driving motor 40, multiple blades can be driven to sequentially step away from the air inlet 10 (i.e., leave from their respective shielding positions) and switch to their respective retracted positions, that is, the intake efficiency of the air inlet 10 can be controlled by a single driving motor 40. When it is necessary to block the air inlet 10, the single driving motor 40 can also be used to drive multiple blades to sequentially stepwise move to their respective shielding positions, that is, multiple blades are sequentially blocked at the air inlet 10. The overall structure of the active intake grille of this solution is simple. A single driving motor 40 can achieve the time-sharing movement (opening and closing) of multiple blades, and the structural stability is good when the blades are in their respective shielding positions or retracted positions.

[0053] Such as Figure 5 and Figure 6As shown in the figure, the driving mechanism 4 includes a plurality of driving dials. A driving rotating shaft 401 is provided on the driving motor 40. The plurality of driving dials are arranged along the axial direction of the driving rotating shaft 401, and the driving motor 40 can drive the plurality of driving dials to rotate. A sprocket 30 is provided at one end of the driving link away from the blade, and the driving dial is movably connected to the sprocket 30. Specifically, the plurality of driving dials include a first driving dial 41, a second driving dial 42, and a third driving dial 43. The first driving dial 41 is movably connected to the sprocket 30 on the first driving link 31; the second driving dial 42 is movably connected to the sprocket 30 on the second driving link 32; the third driving dial 43 is movably connected to the sprocket 30 on the third driving link 33. That is, the driving dial and the sprocket 30 on the driving link form a sprocket mechanism, realizing the intermittent driving of the sprocket 30 by the driving dial, and further enabling the driving link to rotate.

[0054] Specifically, a pin 411 is provided on the driving dial, and a plurality of pin grooves 301 are provided on the sprocket 30. In this embodiment, there are specifically four. When the pin 411 enters any one of the pin grooves 301, the driving dial can drive the sprocket 30 to rotate. When the pin 411 does not enter the pin groove 301 on the sprocket 30, the dial rotates and will not drive the sprocket 30 to rotate. An outer convex arc wall 412 is provided on the driving dial, and a plurality of inner concave arc walls 302 are provided on the sprocket 30 along its circumference. In this embodiment, each sprocket 30 is provided with four inner concave arc walls 302 along its circumference, and a pin groove 301 is provided between adjacent two inner concave arc walls 302. When the pin 411 slides into the pin groove 301, the outer convex arc wall 412 disengages from the inner concave arc wall 302; when the pin 411 slides out of the pin groove 301, the outer convex arc wall 412 is in movable contact with the inner concave arc wall 302. When the outer convex arc wall 412 of the driving dial is in contact with the inner concave arc wall 302 of the sprocket 30, the rotation of the driving dial will not drive the sprocket 30 to rotate and will limit the rotation of the sprocket 30. When the pin 411 slides into the pin groove 301, the outer convex arc wall 412 will disengage from the inner concave arc wall 302 and no longer limit the rotation of the sprocket 30. Therefore, at this time, when the driving dial rotates, it will drive the sprocket 30 to rotate through the pin 411, and further enable the driving link to rotate.

[0055] Among them, a dial pin 411 is provided on each of the first driving dial 41, the second driving dial 42, and the third driving dial 43. The phase angles of the dial pins 411 on the first driving dial 41, the second driving dial 42, and the third driving dial 43 are different to stepwise drive the first blade 21, the second blade 22, and the third blade 23. In this embodiment, after the third driving dial 43 drives the third blade 23 to switch to the retracted position of the third blade 23, the driving rotating shaft 401 rotates approximately 90 degrees, and then the second driving dial 42 starts to drive the second blade 22 to switch to the retracted position of the second blade 22. After the driving rotating shaft 401 rotates approximately 90 degrees again, the first driving dial 41 starts to drive the first blade 21 to switch to the retracted position of the first blade 21. The driving motor 40 is enabled to stepwise retract the first blade 21, the second blade 22, and the third blade 23. Conversely, the driving motor 40 can also stepwise expand the first blade 21, the second blade 22, and the third blade 23 to their respective shielding positions.

[0056] Preferably, in this embodiment, the phase angle difference of the dial pins 411 on the first driving dial 41, the second driving dial 42, and the third driving dial 43 can also be adjusted so that when two adjacent blades move successively, the driving rotating shaft 401 of the driving motor 40 rotates 95 degrees. In this way, there will be a 5-degree idle rotation of the driving rotating shaft 401 of the driving motor 40, and this 5-degree idle rotation can eliminate the manufacturing errors of each part. Because when there are manufacturing errors in each component, originally when two adjacent blades are required to move successively, the rotation angle of the driving rotating shaft 401 of the driving motor 40 is 90 degrees. However, due to the existence of errors, in actuality, when the driving rotating shaft 401 rotates 89 degrees, the two adjacent blades may move successively. By setting a 5-degree idle rotation, this error can be eliminated to prevent the above situation from occurring to meet the usage requirements.

[0057] Combined with Figure 2 and Figures 7 - 9 , the working principle of the active intake grille of the vehicle in this embodiment is as follows:

[0058] In the initial state, the first blade 21, the second blade 22, and the third blade 23 are sequentially arranged at the air inlet 10 from top to bottom to block the air inlet 10.

[0059] When it is necessary to fully open the air inlet 10, the drive motor 40 rotates the drive rotating shaft 401, and the first driving dial 41, the second driving dial 42 and the third driving dial 43 are linked with the drive rotating shaft 401. When the pin 411 on the third driving dial 43 slides into the pin slot 301 of the sheave 30 on the third driving link 33, the convex arc wall 412 on the third driving dial 43 disengages from the concave arc wall 302 of the sheave 30 on the third driving link 33. During the rotation of the third driving dial 43, it drives the third driving link 33 to rotate, and then moves the third blade 23 to the retracted position of the third blade 23. The pin 411 of the third driving dial 43 disengages from the pin slot 301 of the sheave 30 on the third driving link 33, and the convex arc wall 412 on the third driving dial 43 abuts against the concave arc wall 302 of the third driving link 33 again, ensuring the position stability of the third blade 23.

[0060] As the drive rotating shaft 401 continues to rotate, when the pin 411 on the second driving dial 42 slides into the pin slot 301 of the sheave 30 on the second driving link 32, the convex arc wall 412 on the second driving dial 42 disengages from the concave arc wall 302 of the sheave 30 on the second driving link 32. During the rotation of the second driving dial 42, it drives the second driving link 32 to rotate, and then moves the second blade 22 to the retracted position of the second blade 22. The pin 411 of the second driving dial 42 disengages from the pin slot 301 on the second driving link 32, and the convex arc wall 412 on the second driving dial 42 abuts against the concave arc wall 302 of the second driving link 32 again, ensuring the position stability of the second blade 22.

[0061] As the drive rotating shaft 401 continues to rotate, when the pin 411 on the first driving dial 41 slides into the pin slot 301 of the sheave 30 on the first driving link 31, the convex arc wall 412 on the first driving dial 41 disengages from the concave arc wall 302 of the sheave 30 on the first driving link 31. During the rotation of the first driving dial 41, it drives the first driving link 31 to rotate, and then moves the first blade 21 to the retracted position of the first blade 21. The pin 411 of the first driving dial 41 disengages from the pin slot 301 on the first driving link 31, and the convex arc wall 412 on the first driving dial 41 abuts against the concave arc wall 302 of the first driving link 31 again, ensuring the position stability of the first blade 21.

[0062] The above realizes the step-by-step retraction of the first blade 21, the second blade 22 and the third blade 23 driven by a single drive motor 40. Conversely, when the drive motor 40 rotates in reverse, it can drive the first blade 21, the second blade 22 and the third blade 23 to expand step by step and move to their respective shielding positions.

[0063] In this solution, a single driving motor 40 can be used to drive multiple blades to retract and deploy step by step, thereby controlling the size of the air inlet 10. The overall structure is simple and the cost is low.

Claims

1. An active intake grille for an automobile, characterized in that, Comprising: A mounting bracket, an air inlet is provided on the mounting bracket; Multiple blades, which are movably arranged at the air inlet. The multiple blades all have a shielding position and a retracted position, and the multiple blades can all switch between their retracted positions and their shielding positions. When the blades switch to their shielding positions, the blades shield at the air inlet; when the blades switch to their retracted positions, the blades move inward away from the air inlet; A link mechanism, connecting the mounting bracket and the multiple blades; A driving mechanism, arranged on the mounting bracket and movably connected to the link mechanism. The driving mechanism includes a driving motor; the driving motor can drive the multiple blades to stepwise switch from their respective shielding positions to their respective retracted positions, and the driving motor can drive the multiple blades to stepwise switch from their respective retracted positions to their respective shielding positions; Wherein, the driving mechanism includes multiple driving dials. The driving motor has a driving rotating shaft, and the multiple driving dials are arranged along the axial direction of the driving rotating shaft, and the driving motor can drive the multiple driving dials to rotate; The link mechanism includes multiple driving link rods. One end of the driving link rod is rotatably connected to the blade, and a sprocket is provided at the other end of the driving link rod. The sprocket and the driving link rod are integrally arranged, and the driving dial is movably connected to the sprocket; A pin is provided on the driving dial, and multiple pin grooves are provided on the sprocket. When the pin enters the pin groove, the driving dial can drive the sprocket to rotate; The multiple blades include a first blade, a second blade and a third blade. When the first blade, the second blade and the third blade all switch to their respective shielding positions, the first blade, the second blade and the third blade shield at the air inlet in sequence from top to bottom; When the first blade, the second blade and the third blade all switch to their respective retracted positions, the second blade is on the back side of the first blade, and the third blade is on the back side of the second blade.

2. The active intake grille of an automobile according to claim 1, characterized in that, The driving dial is provided with an outward convex arc wall, and the sprocket is provided with multiple inward concave arc walls along its circumferential direction. The pin groove is provided between two adjacent inward concave arc walls; When the pin slides into the pin groove, the outward convex arc wall disengages from the inward concave arc wall; When the pin slides out of the pin groove, the outward convex arc wall is movably attached to the inward concave arc wall.

3. The active intake grille for an automobile according to claim 1 or 2, characterized in that, The multiple driving link rods include a first driving link rod connecting the first blade, a second driving link rod connecting the second blade and a third driving link rod connecting the third blade; a first rotating shaft is provided on the mounting bracket. The first driving link rod, the second driving link rod and the third driving link rod are all rotatably arranged on the first rotating shaft, and all are provided with a sprocket; The multiple driving dials include a first driving dial, a second driving dial and a third driving dial. The first driving dial is movably connected to the sprocket on the first driving link rod; the second driving dial is movably connected to the sprocket on the second driving link rod; the third driving dial is movably connected to the sprocket on the third driving link rod.

4. The active intake grille for a vehicle according to claim 3, characterized in that, A pin is provided on each of the first driving dial, the second driving dial and the third driving dial. Among them, the phase angles of the pins on the first driving dial, the second driving dial and the third driving dial are different to stepwise drive the first blade, the second blade and the third blade.

5. The active intake grille for an automobile according to claim 3, wherein, The link mechanism includes a first driven link, a second driven link and a third driven link; A second rotating shaft is provided on the mounting frame. The second rotating shaft is parallel to the first rotating shaft. One ends of the first driven link, the second driven link and the third driven link are rotatably arranged on the second rotating shaft. The other end of the first driven link is hinged to the first blade. The other end of the second driven link is hinged to the second blade. The other end of the third driven link is hinged to the third blade.

6. The active intake grille of an automobile according to claim 3, characterized in that, When the drive motor drives the first blade, the second blade and the third blade to stepwise switch from their respective shielding positions to their respective retracted positions: after the third blade first switches to its retracted position, the second blade then switches to its retracted position, and finally the first blade switches to its retracted position.

7. The active intake grille for a vehicle according to claim 5, characterized in that, A frame is provided along the circumference of the air inlet on the inner side of the mounting frame. The drive rotating shaft, the first rotating shaft and the second rotating shaft are rotatably arranged on the frame.

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