A connecting rod type tail wing and automobile thereof

Abstract

The present invention relates to the technical field of automobile tail wing, and discloses a connecting rod type tail wing and automobile, wherein a first transmission connecting rod is provided with a first rotating shaft, a second rotating shaft, a third rotating shaft and a fourth rotating shaft, the first rotating shaft is rotatably connected to a bottom bracket, the second rotating shaft is rotatably connected to one end of a second driving connecting rod, the other end of the second driving connecting rod is rotatably connected to one end of the first driving connecting rod, the other end of the first driving connecting rod is rotatably connected to the bottom bracket, the third rotating shaft is rotatably connected to one end of the second transmission connecting rod, the other end of the second transmission connecting rod is rotatably connected to a top bracket, the fourth rotating shaft is rotatably connected to one end of the third transmission connecting rod, the other end of the third transmission connecting rod is rotatably connected to the top bracket, one end of the fourth transmission connecting rod is rotatably connected to the bottom bracket, the other end of the fourth transmission connecting rod is rotatably connected to the top bracket, the top bracket is connected to a spoiler, and a driving assembly is drivingly connected to the first driving connecting rod. The connecting rod type tail wing and automobile of the present invention improve self-locking stability.

Description

Technical Field

[0001] The invention relates to the technical field of automobile tail wings, in particular to a connecting rod type tail wing and an automobile thereof. Background Art

[0002] According to aerodynamics, a car will encounter greater air resistance when driving at high speed, and air resistance has an adverse effect on a car driving at high speed. In order to reduce the impact of air resistance on the car when driving at high speed, an electric tail wing is set at the rear of the car to offset part of the lift when driving at high speed, reduce the drag coefficient, and increase the adhesion of the car to the ground. The electric tail wing is deployed and closed through a lifting mechanism, but the existing lifting structure has low self-locking stability and poor locking effect, resulting in a short service life. Summary of the invention

[0003] The purpose of the present invention is to provide a connecting rod type tail wing and a car thereof, so as to improve the self-locking stability, ensure the locking effect and prolong the service life of the connecting rod type tail wing.

[0004] In order to achieve the above-mentioned object, the present invention provides a link type tail wing and a car thereof, comprising a lifting assembly and a driving assembly, wherein the lifting assembly comprises a top bracket, a bottom bracket, a first driving link, a second driving link, a first transmission link, a second transmission link, a third transmission link and a fourth transmission link, wherein the first transmission link is provided with a first rotating shaft, a second rotating shaft, a third rotating shaft and a fourth rotating shaft in sequence from one end to the other end, the first rotating shaft is rotatably connected to the bottom bracket, the second rotating shaft is rotatably connected to one end of the second driving link, the other end of the second driving link is rotatably connected to one end of the first driving link, the other end of the first driving link is rotatably connected to the bottom bracket, the third rotating shaft is rotatably connected to one end of the second transmission link, the other end of the second transmission link is rotatably connected to the top bracket, the fourth rotating shaft is rotatably connected to one end of the third transmission link, the other end of the third transmission link is rotatably connected to the top bracket, one end of the fourth transmission link is rotatably connected to the bottom bracket, the other end of the fourth transmission link is rotatably connected to the top bracket, the top bracket is connected with a spoiler, and the driving assembly is drivingly connected to the first driving link.

[0005] As a preferred embodiment, the top bracket is provided with a first top rotating shaft hole, a second top rotating shaft hole and a third top rotating shaft hole, the second top rotating shaft hole is located between the first top rotating shaft hole and the third top rotating shaft hole, the first top rotating shaft hole is rotatably connected to the second transmission connecting rod, the second top rotating shaft hole is rotatably connected to the fourth transmission connecting rod, and the third top rotating shaft hole is rotatably connected to the third transmission connecting rod.

[0006] As a preferred solution, the first top rotating shaft hole, the second top rotating shaft hole and the third top rotating shaft hole are located on the same side of the top bracket.

[0007] As a preferred solution, a driving shaft and a transmission shaft are provided at both ends of the first driving link, one end of the first driving link is rotatably connected to the second driving link through the driving shaft, and the other end of the first driving link is connected to the bottom bracket through the transmission shaft.

[0008] As a preferred embodiment, the lifting assembly includes a first self-locking position and a second self-locking position. When the lifting assembly is in the first self-locking position and the second self-locking position, the axis connecting the driving shaft, the transmission shaft and the second shaft forms an angle a, 0°<angle a<180°, and the bottom bracket is provided with a limit block. When the lifting assembly is in the first self-locking position, the first transmission connecting rod abuts the limit block, and the second driving connecting rod is provided with a limit protrusion. When the lifting assembly is in the second self-locking position, the limit protrusion abuts the bottom bracket.

[0009] As a preferred embodiment, when the lifting assembly is in the first self-locking position, the angle a is set at 170°-174°, and the angle a opens toward the front. When the lifting assembly is in the second self-locking position, the angle a is set at 6°-10°, and the angle a opens toward the rear.

[0010] As a preferred embodiment, the bottom bracket includes a first support arm, a second support arm and a third support arm from front to back, the first support arm and the second support arm are located on the same side of the bottom bracket, the third support arm is located on the opposite side of the first support arm, the first support arm is rotatably connected to the first drive link, the second support arm is rotatably connected to the first transmission link, the third support arm is rotatably connected to the fourth transmission link, one end of the limit block is connected to the second support arm, and the other end of the limit block extends toward one side of the third support arm.

[0011] As a preferred embodiment, the bottom bracket includes a connecting base plate, the first support arm and the second support arm are connected to one side of the connecting base plate, the third support arm is connected to the other opposite side of the connecting base plate, and the limiting protrusion is provided with a limiting surface, and when the lifting assembly is in the second self-locking position, the limiting surface is in contact with the connecting base plate.

[0012] As a preferred solution, two groups of the lifting components are provided, and the lifting components are connected to both ends of the spoiler. The driving component includes a driving member, and the driving member is respectively connected to the bottom bracket through a transmission shaft.

[0013] A car comprises a body and the connecting rod type tail wing, wherein the connecting rod type tail wing is installed at the rear part of the body.

[0014] Compared with the prior art, the embodiment of the present invention has the following beneficial effects: the first transmission link, the second transmission link, the third transmission link and the top bracket are connected to form a four-bar linkage, the driving assembly drives the first driving link to transmit, the first driving link is connected to the first transmission link through the second driving link, the four-bar linkage is driven to rotate through the first transmission link, the spoiler is connected to the top bracket, and then the top bracket is driven to rise and fall. The lower end of the fourth transmission link is connected to the bottom bracket, the upper end of the fourth transmission link is connected to the top bracket, the upper end of the fourth transmission link is used as the fulcrum for the angular rotation of the spoiler, the front and rear ends of the top bracket are controlled by the second transmission link and the third transmission link, so that the spoiler is angularly rotated around the upper end of the fourth transmission link. Since the fourth transmission rod is a single rod, there is no rotation node in the middle of the fourth transmission rod, and the top bracket is connected to the bottom bracket through the fourth transmission rod, so as to improve the rotation stability of the top bracket and the overall support stability of the lifting assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the spoiler according to an embodiment of the present invention when it is in the first self-locking position.

[0016] Figure 2 It is a schematic diagram of the overall structure of the spoiler of an embodiment of the present invention when it is in the second self-locking position.

[0017] Figure 3 It is a schematic structural diagram of the lifting assembly according to an embodiment of the present invention when it is in the first self-locking position.

[0018] Figure 4 It is a schematic diagram of the structure of the lifting assembly of an embodiment of the present invention between the first self-locking position and the second self-locking position.

[0019] Figure 5 It is a schematic structural diagram of the lifting assembly in the second self-locking position according to an embodiment of the present invention.

[0020] Figure 6 It is a schematic diagram of the structure of the other side of the lifting assembly in the second self-locking position according to an embodiment of the present invention.

[0021] Figure 7 It is a schematic structural diagram of the second driving connecting rod according to an embodiment of the present invention.

[0022] Figure 8 It is a schematic structural diagram of a top bracket according to an embodiment of the present invention.

[0023] Fig. 9 It is a schematic structural diagram of the angle a of the embodiment of the present invention in the first self-locking position.

[0024] Fig.10 It is a schematic diagram of the structure of angle a in the second self-locking position of an embodiment of the present invention.

[0025] In the figure:

[0026] 10. Lifting assembly; 11. Driving assembly; 12. Driving member; 13. Spoiler;

[0027] 20. top bracket; 21. first top shaft hole; 22. second top shaft hole; 23. third top shaft hole;

[0028] 30. Bottom bracket; 31. First support arm; 32. Second support arm; 33. Limit block; 34. Third support arm; 35. Connecting bottom plate;

[0029] 40. First drive connecting rod; 41. Drive rotating shaft; 42. Transmission shaft; 43. Second drive connecting rod; 44. Limiting protrusion; 45. Limiting surface; 46. First transmission connecting rod; 47. First rotating shaft; 48. Second rotating shaft; 49. Third rotating shaft; 50. Fourth rotating shaft; 51. Second transmission connecting rod; 52. Third transmission connecting rod; 53. Fourth transmission connecting rod. DETAILED DESCRIPTION

[0030] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" used in the present invention to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present invention, it should be understood that the terms "connected", "connected", "fixed" and the like used in the present invention should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a welding connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] like Figures 1 to 10As shown, a link type tail wing of a preferred embodiment of the present invention comprises a lifting assembly 10 and a driving assembly 11, wherein the lifting assembly 10 comprises a top bracket 20, a bottom bracket 30, a first driving link 40, a second driving link 43, a first transmission link 46, a second transmission link 51, a third transmission link 52 and a fourth transmission link 53, wherein the first transmission link 46 is provided with a first rotating shaft 47, a second rotating shaft 48, a third rotating shaft 49 and a fourth rotating shaft 50 from one end to the other end, the first rotating shaft 47 is rotatably connected to the bottom bracket 30, the second rotating shaft 48 is rotatably connected to one end of the second driving link 43, and the other end of the second driving link 43 is rotatably connected to the One end of the first driving link 40 is rotatably connected, the other end of the first driving link 40 is rotatably connected to the bottom bracket 30, the third rotating shaft 49 is rotatably connected to one end of the second transmission link 51, the other end of the second transmission link 51 is rotatably connected to the top bracket 20, the fourth rotating shaft 50 is rotatably connected to one end of the third transmission link 52, the other end of the third transmission link 52 is rotatably connected to the top bracket 20, one end of the fourth transmission link 53 is rotatably connected to the bottom bracket 30, the other end of the fourth transmission link 53 is rotatably connected to the top bracket 20, the top bracket 20 is connected to the spoiler 13, and the driving assembly 11 is drivingly connected to the first driving link 40.

[0034] A car comprises a car body and a connecting rod type tail wing, wherein the connecting rod type tail wing is installed at the rear part of the car body.

[0035] In the link-type tail wing and the automobile thereof of the present invention, the first transmission link 46, the second transmission link 51, the third transmission link 52 and the top bracket 20 are connected to form a four-bar linkage, the driving assembly 11 drives the first driving link 40 to transmit, the first driving link 40 is transmission-connected with the first transmission link 46 through the second driving link 43, the four-bar linkage is driven to rotate through the first transmission link 46, the spoiler 13 is connected to the top bracket 20, and then the top bracket 20 is driven to rise and fall. The lower end of the fourth transmission link 53 is connected to the bottom bracket 30, the upper end of the fourth transmission link 53 is connected to the top bracket 20, the upper end of the fourth transmission link 53 serves as the fulcrum for the angular rotation of the spoiler 13, the front and rear ends of the top bracket 20 are controlled through the second transmission link 51 and the third transmission link 52, so that the spoiler 13 is angularly rotated around the upper end of the fourth transmission link 53. Since the fourth transmission rod is a single rod, there is no rotation node in the middle of the fourth transmission rod. The top bracket 20 is connected to the bottom bracket 30 through the fourth transmission rod, thereby improving the rotation stability of the top bracket 20 and the overall support stability of the lifting assembly 10.

[0036] Further, such as Figures 3 to 6 and Figure 8As shown, the top bracket 20 is provided with a first top shaft hole 21, a second top shaft hole 22 and a third top shaft hole 23, the second top shaft hole 22 is located between the first top shaft hole 21 and the third top shaft hole 23, the first top shaft hole 21 is rotatably connected to the second transmission link 51, the second top shaft hole 22 is rotatably connected to the fourth transmission link 53, and the third top shaft hole 23 is rotatably connected to the third transmission link 52. The second top shaft hole 22 is located in the middle of the top bracket 20, the first top shaft hole 21 and the third top shaft hole 23 are respectively located at both ends of the top bracket 20, and the spoiler 13 is driven to rotate through the four-bar linkage to meet the angle rotation requirement of the spoiler 13. During rotation, the second transmission link 51 and the third transmission link 52 control the two ends of the top bracket 20, so that the two ends of the top bracket 20 rotate around the top of the fourth transmission link 53. The connection position between the fourth link and the top bracket 20 is located in the middle, which improves the supporting strength of the fourth link to the top bracket 20 and makes the top bracket 20 more evenly stressed.

[0037] Further, such as Figures 3 to 6 and Figure 8 The first top pivot hole 21, the second top pivot hole 22 and the third top pivot hole 23 are located on the same side of the top bracket 20, so that the connection positions of the second transmission link 51, the third transmission link 52 and the fourth transmission link 53 with the top bracket 20 are respectively located on the same side of the top bracket 20, thereby optimizing the connection position and installation space of the top bracket 20 and providing the other side of the top bracket 20 with a connection and installation position with the spoiler 13.

[0038] Further, such as Figures 3 to 6 and Figures 9 and 10 As shown, a driving shaft 41 and a transmission shaft 42 are provided at both ends of the first driving link 40, one end of the first driving link 40 is rotatably connected to the second driving link 43 through the driving shaft 41, and the other end of the first driving link 40 is connected to the bottom bracket 30 through the transmission shaft 42. The bottom bracket 30 provides support for the transmission shaft 42 and the first driving link 40, and the first driving link 40 is driven to rotate through the transmission shaft 42, and the first driving link 40 drives the first transmission link 46 to rotate through the second driving link 43, thereby realizing the transmission of the four-bar linkage.

[0039] Further, such as Figures 3 to 6 and Figures 9 and 10 As shown, the lifting assembly 10 includes a first self-locking position and a second self-locking position. Figure 3 and Figures 5 and 6 As shown, when the lifting assembly 10 is in the first self-locking position and the second self-locking position, the axis connecting the driving shaft 41, the transmission shaft 42 and the second shaft 48 forms an angle a, 0°<angle a<180°, and the bottom bracket 30 is provided with a limit block 33, as shown in FIG. Figure 3As shown, when the lifting assembly 10 is in the first self-locking position, the first transmission connecting rod 46 abuts against the limit block 33, and the second driving connecting rod 43 is provided with a limit protrusion 44, as shown in FIG. Figures 5 and 6 As shown, when the lifting assembly 10 is in the second self-locking position, the limiting protrusion 44 abuts against the bottom bracket 30. The first self-locking position is when the lifting assembly 10 rises and the spoiler 13 rotates to the angle required for positioning. The transmission shaft 42 drives the first drive link 40 to rotate backward, and the first drive link 40 and the second drive link 43 unfold to form a straight line. After the angle a increases to 180°, the drive shaft 41 continues to rotate downward, and finally becomes the angle a opening facing forward and the angle a <180°. The angle a prevents the first transmission rod from rotating forward, and the limiting block 33 prevents the first transmission rod from rotating backward. Then the angle a combined with the limiting block 33 enables the lifting assembly 10 to achieve self-locking in two directions in the first self-locking position. The second self-locking position is when the lifting assembly 10 descends to the initial position of the spoiler 13 body. The transmission shaft 42 drives the first driving link 40 to rotate forward. After the first driving link 40 overlaps with the second driving link 43 and the angle a is 0°, the driving shaft 41 rotates downward again, so that the final angle a0°<angle a<180° and the angle a opens toward the rear. The angle a prevents the first transmission rod from rotating backward, and the limiting protrusion 44 prevents the second driving link 43 from continuing to rotate downward and causing the first transmission rod to rotate forward. Therefore, the angle a combined with the limiting protrusion 44 enables the lifting assembly 10 to achieve self-locking in two directions at the second self-locking position, thereby improving the self-locking stability of the lifting assembly 10 at the first self-locking position and the second self-locking position.

[0040] Further, such as Fig. 9 As shown, when the lifting assembly 10 is in the first self-locking position, the angle a is set at 170°-174°, and the angle a opens toward the front. Fig.10 As shown, when the lifting assembly 10 is in the second self-locking position, the angle a is set at 6°-10°, and the angle a opens toward the rear. The first drive link 40 and the second drive link 43 of the present invention respectively rotate through two extreme positions before self-locking and then combine with the limit block 33 or the limit protrusion 44 to achieve self-locking. When self-locking, the angle a is set at 170°-174°, and the angle a is set at 6°-10°, and the self-locking effect is better.

[0041] Further, such as Figures 3 to 6 and Figure 8As shown, the bottom bracket 30 includes a first support arm 31, a second support arm 32 and a third support arm 34 from front to back, the first support arm 31 and the second support arm 32 are located on the same side of the bottom bracket 30, the third support arm 34 is located on the opposite side of the first support arm 31, the first support arm 31 is rotatably connected to the first drive link 40, the second support arm 32 is rotatably connected to the first transmission link 46, the third support arm 34 is rotatably connected to the fourth transmission link 53, one end of the limit block 33 is connected to the second support arm 32, and the other end of the limit block 33 extends toward one side of the third support arm 34. The first support arm 31, the second support arm 32 and the third support arm 34 provide the connection stability and support strength of the first drive link 40, the second drive link 43, the first transmission link 46, the second transmission link 51, the third transmission link 52 and the fourth transmission link 53.

[0042] As one embodiment, Figure 8 As shown, the top of the third support arm 34 is higher than the top of the first support arm 31 and the top of the second support arm 32. The top of the third support arm 34 is connected to the lower end of the fourth transmission link 53, shortening the distance between the third support arm 34 and the top bracket 20, which helps to improve the support stability of the top bracket 20.

[0043] Further, such as Figures 3 to 6 As shown, the bottom bracket 30 includes a connecting bottom plate 35, a first support arm 31 and a second support arm 32 are connected to one side of the connecting bottom plate 35, a third support arm 34 is connected to the other opposite side of the connecting bottom plate 35, and a limiting protrusion 44 is provided with a limiting surface 45. When the lifting assembly 10 is in the second self-locking position, the limiting surface 45 is in contact with the connecting bottom plate 35, and the limiting protrusion 44 extends toward the inner side of the connecting bottom plate 35 to prevent the second driving connecting rod 43 from further rotating.

[0044] Among them, Figures 3 to 6 As shown, the first support arm 31 , the second support arm 32 and the third support arm 34 are arranged perpendicular to the connecting base plate 35 .

[0045] Further, such as Figure 1 to Figure 2 As shown, two groups of lifting assemblies 10 are provided, and the lifting assemblies 10 are connected to both ends of the spoiler 13. The driving assembly 11 includes a driving member 12, and the driving member 12 is respectively connected to the bottom bracket 30 through a transmission shaft 42. The two ends of the spoiler 13 are respectively driven by the lifting assemblies 10, and the overall force of the spoiler 13 is more uniform, thereby improving the transmission stability of the spoiler 13.

[0046] As one embodiment, the driving member 12 is a motor.

[0047] As one embodiment, Figure 1 to Figure 2As shown, the driving member 12 is located in the middle of the length direction of the spoiler 13 , and the transmission shaft 42 extends along both sides of the driving member 12 and is in transmission connection with the lifting assembly 10 .

[0048] The working process of the present invention is as follows: the transmission shaft 42 drives the first driving link 40 to rotate backward, the first driving link 40 and the second driving link 43 are unfolded to form a straight line, and after the angle a increases to 180°, the driving shaft 41 continues to rotate downward, and finally the angle a opens toward the front and the angle a is less than 180°, the spoiler 13 rises, and the angle of the spoiler 13 is adjusted by the four-bar linkage mechanism, the spoiler 13 is tilted, so that the front end of the spoiler 13 is lower than the rear end, and the lifting assembly 10 rises to the self-locking state of the first self-locking position.

[0049] The transmission shaft 42 drives the first driving link 40 to rotate forward. After the first driving link 40 overlaps with the second driving link 43 and the angle a is 0°, the driving shaft 41 rotates downward again to make the final angle a0°<angle a<180° and the angle a opens toward the rear. The spoiler 13 descends, and the angle of the spoiler 13 is adjusted by the four-bar linkage mechanism. The spoiler 13 is tilted so that the front end of the spoiler 13 is higher than the rear end. The lifting assembly 10 descends to the self-locking state of the second self-locking position, and the spoiler 13 is flush with the surface of the vehicle body or hidden in the vehicle body.

[0050] In summary, the embodiment of the present invention provides a link-type tail wing and a car thereof, wherein the first transmission link 46, the second transmission link 51, the third transmission link 52 and the top bracket 20 are connected to form a four-bar linkage, the driving assembly 11 drives the first driving link 40 to transmit, the first driving link 40 is transmission-connected to the first transmission link 46 through the second driving link 43, the four-bar linkage is driven to rotate through the first transmission link 46, the spoiler 13 is connected to the top bracket 20, and then the top bracket 20 is driven to rise and fall. The lower end of the fourth transmission link 53 is connected to the bottom bracket 30, the upper end of the fourth transmission link 53 is connected to the top bracket 20, the upper end of the fourth transmission link 53 serves as the fulcrum for the angular rotation of the spoiler 13, and the front and rear ends of the top bracket 20 are controlled by the second transmission link 51 and the third transmission link 52, so that the spoiler 13 rotates around the upper end of the fourth transmission link 53. Since the fourth transmission rod is a single rod, there is no rotation node in the middle of the fourth transmission rod. The top bracket 20 is connected to the bottom bracket 30 through the fourth transmission rod, thereby improving the rotation stability of the top bracket 20 and the overall support stability of the lifting assembly 10.

[0051] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A connecting rod type tail wing, characterized in that: The lifting assembly comprises a lifting assembly and a driving assembly, wherein the lifting assembly comprises a top bracket, a bottom bracket, a first driving link, a second driving link, a first transmission link, a second transmission link, a third transmission link and a fourth transmission link, wherein the first transmission link is provided with a first rotating shaft, a second rotating shaft, a third rotating shaft and a fourth rotating shaft in sequence from one end to the other end, the first rotating shaft is rotatably connected to the bottom bracket, the second rotating shaft is rotatably connected to one end of the second driving link, the other end of the second driving link is rotatably connected to one end of the first driving link, the other end of the first driving link is rotatably connected to the bottom bracket, the third rotating shaft is rotatably connected to one end of the second transmission link, the other end of the second transmission link is rotatably connected to the top bracket, the fourth rotating shaft is rotatably connected to one end of the third transmission link, the other end of the third transmission link is rotatably connected to the top bracket, one end of the fourth transmission link is rotatably connected to the bottom bracket, the other end of the fourth transmission link is rotatably connected to the top bracket, the top bracket is connected with a spoiler, and the driving assembly is drivingly connected to the first driving link.

2. The connecting rod type tail wing according to claim 1, characterized in that: The top bracket is provided with a first top rotating shaft hole, a second top rotating shaft hole and a third top rotating shaft hole, the second top rotating shaft hole is located between the first top rotating shaft hole and the third top rotating shaft hole, the first top rotating shaft hole is rotatably connected to the second transmission connecting rod, the second top rotating shaft hole is rotatably connected to the fourth transmission connecting rod, and the third top rotating shaft hole is rotatably connected to the third transmission connecting rod.

3. The connecting rod type tail wing according to claim 2, characterized in that: The first top rotating shaft hole, the second top rotating shaft hole and the third top rotating shaft hole are located on the same side of the top bracket.

4. The connecting rod type tail wing according to claim 1, characterized in that: A driving shaft and a transmission shaft are provided at both ends of the first driving link, one end of the first driving link is rotatably connected to the second driving link through the driving shaft, and the other end of the first driving link is connected to the bottom bracket through the transmission shaft.

5. The connecting rod type tail wing according to claim 4, characterized in that: The lifting assembly includes a first self-locking position and a second self-locking position. When the lifting assembly is in the first self-locking position and the second self-locking position, the axis connecting the driving shaft, the transmission shaft and the second shaft forms an angle a, 0°<angle a<180°, the bottom bracket is provided with a limit block, when the lifting assembly is in the first self-locking position, the first transmission connecting rod abuts against the limit block, the second driving connecting rod is provided with a limit protrusion, and when the lifting assembly is in the second self-locking position, the limit protrusion abuts against the bottom bracket.

6. The connecting rod type tail wing according to claim 5, characterized in that: When the lifting assembly is in the first self-locking position, the angle a is set at 170°-174°, and the angle a opens toward the front. When the lifting assembly is in the second self-locking position, the angle a is set at 6°-10°, and the angle a opens toward the rear.

7. The connecting rod type tail wing according to claim 5, characterized in that: The bottom bracket includes a first support arm, a second support arm and a third support arm from front to back, the first support arm and the second support arm are located on the same side of the bottom bracket, the third support arm is located on the opposite side of the first support arm, the first support arm is rotatably connected to the first drive link, the second support arm is rotatably connected to the first transmission link, the third support arm is rotatably connected to the fourth transmission link, one end of the limit block is connected to the second support arm, and the other end of the limit block extends toward one side of the third support arm.

8. The connecting rod type tail wing according to claim 7, characterized in that: The bottom bracket includes a connecting bottom plate, the first support arm and the second support arm are connected to one side of the connecting bottom plate, the third support arm is connected to the other opposite side of the connecting bottom plate, the limiting protrusion is provided with a limiting surface, and when the lifting assembly is in the second self-locking position, the limiting surface is in contact with the connecting bottom plate.

9. The connecting rod type tail wing according to claim 4, characterized in that: The lifting components are provided in two groups, and the lifting components are connected to the two ends of the spoiler. The driving component comprises a driving member, and the driving member is respectively connected to the bottom bracket through a transmission shaft.

10. An automobile, characterized in that: The invention comprises a vehicle body and a link type tail wing as claimed in any one of claims 1 to 9, wherein the link type tail wing is installed at the rear of the vehicle body.

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