A motion mechanism for active front lip

Abstract

The present invention provides a motion mechanism for an active front lip, the motion mechanism is connected to the front lip through a bracket, the motion mechanism includes a frame and a motor installed in the middle of the frame, side mounting plates are fixed at both ends of the frame, and the side mounting plates are respectively movably connected to a transmission mechanism. The motion mechanism provided by the present invention can control the movement of the front lip, so as to ensure the passability of the whole vehicle while enabling the whole vehicle to achieve the expected aerodynamic performance.

Description

Technical Field

[0001] The invention relates to the field of automobile exterior decoration, and more particularly to a motion mechanism for an active front lip. Background Art

[0002] With the implementation of energy conservation and emission reduction policies, vehicles have higher and higher requirements for fuel consumption. In order to reduce fuel consumption, in addition to improving the fuel ratio and reducing the weight of the vehicle, the OEM is considering changing the front lip to improve the aerodynamic state of the vehicle, that is, by reducing the amount of air flowing through the bottom of the car to reduce air vortices, and using computer simulation to adjust, so as to achieve the purpose of reducing wind resistance, saving fuel, and saving energy and reducing emissions.

[0003] The front lip of the whole vehicle currently on the market is fixed, such as Figure 1 As shown in the figure, due to the vehicle's passability requirements, the Z-direction size of the middle front lip is small, otherwise it is easy to collide with road obstacles. As a result, the size of the front lip is limited, resulting in its function of reducing wind resistance failing to meet the design requirements, thus limiting the aerodynamic performance of the vehicle.

[0004] In view of the defects of the above-mentioned fixed front lip, the applicant has developed an active front lip. However, the active front lip is limited by its movement trajectory and cannot meet the requirements of vehicle passability and aerodynamic performance at the same time. Summary of the invention

[0005] In order to solve the problem in the prior art that the active front lip cannot simultaneously meet the requirements of vehicle passability and aerodynamic performance due to its limited movement trajectory, the present invention provides a movement mechanism for the active front lip.

[0006] The present invention provides a motion mechanism for an active front lip, wherein the motion mechanism is connected to the front lip via a bracket, the motion mechanism includes a frame and a motor installed in the middle of the frame, side mounting plates are fixed at both ends of the frame, and the side mounting plates are respectively movably connected to a transmission mechanism.

[0007] The transmission mechanism comprises a driving shaft, one end of which is mounted on the side mounting plate, and the other end of which is connected to the motor.

[0008] The driving shaft is pivotally connected to one end of a first swing arm, and the other end of the first swing arm is fixedly connected to a connecting rod.

[0009] The connecting rod is also fixedly connected to one end of a second swing arm, and the other end of the second swing arm is pivotally connected to a pivot button arranged on the side mounting plate.

[0010] The connecting rod is installed on the bracket.

[0011] A motor protection cover is installed on the motor.

[0012] Mechanism protection covers are installed at both ends of the frame.

[0013] The active front lip cooperates with the fixed front lip via a convex bump.

[0014] A decorative plate is attached or bonded to the outer surface of the active front lip.

[0015] The movable connection is a pivot connection.

[0016] The present invention designs a motion mechanism for the active front lip to control the motion of the active front lip, so that the motion mechanism can drive the active front lip to move obliquely. The present invention adjusts the position and length of the active shaft torque transmission rod in the motion mechanism to determine the motion trajectory of the active front lip, so that the vehicle can achieve the expected aerodynamic performance while ensuring the vehicle's passability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a fixed front lip in the prior art.

[0018] FIG. 2( a ) is a schematic diagram of the active front lip structure according to the present invention, and FIG. 2( b ) is an assembly diagram of the motion mechanism according to the present invention.

[0019] Figure 3 It is an exploded view of the assembly of the motion mechanism and the active front lip according to the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the active front lip movement mechanism according to the present invention.

[0021] Figure 5 It is a schematic diagram of the active shaft structure of the active front lip movement mechanism according to the present invention.

[0022] Figure 6 It is a schematic diagram of the matching of the active front lip and the fixed front lip according to the present invention. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following embodiments are only used to illustrate but not to limit the present invention.

[0024] In this embodiment, an active front lip is added to the fixed front lip to make up for the Z-direction dimension lost in the middle part of the vehicle due to the vehicle's passability requirements. As shown in FIG2(a), the active front lip 16 is recessed into the rear of the fixed front lip 15 along the X-direction and exposed at the lower part of the bumper skin 14.

[0025] The motion mechanism for the active front lip provided by the present invention is shown in FIG. 2( b ). The motion mechanism 18 is connected to the calf protection beam 12 of the vehicle and is installed on the active front lip 16 in the X-reverse direction.

[0026] The exploded diagram of the assembly of the motion mechanism and the active front lip of the present invention is as follows: Figure 3 As shown, the motion mechanism 18 includes a motor 1, a frame 2, a side mounting plate 7 and a transmission mechanism 19. The transmission mechanism 19 is pivotally connected to both ends of the frame 2 and the side mounting plate 7 is installed, and the motor 1 is installed in the middle of the frame 2.

[0027] The transmission mechanism 19 includes a driving shaft 4, a connecting rod 6, a first swing arm 20 and a second swing arm 21. Figure 4 As shown, one end of the driving shaft 4 is mounted on the side mounting plate 7, and the other end is connected to the motor 1. The driving shaft 4 is pivotally connected to the first swing arm 20, and the first swing arm 20 is fixedly connected to the connecting rod 6. The connecting rod 6 is also fixedly connected to the second swing arm 21, and the second swing arm 21 is pivotally connected to the side mounting plate 7, so that the second swing arm 21 can rotate around the pivot 5.

[0028] like Figure 5 It is a schematic diagram of the active shaft structure. The end connected to the motor 1 is the motor torque input end 40, the end fixed to the first connecting device is the torque output end 41, and the middle is the torque transmission rod 42. There are two design schemes:

[0029] First, a split structure is adopted, the motor torque input end 40 and the torque output end 41 are made of plastic injection molding, and the torque transmission rod 42 is made of a metal rod, which can minimize the loss during torque transmission;

[0030] Second, an integrated structure is adopted, that is, integrated injection molding, the motor torque input end 40 and the torque output end 41 are consistent with the split structure, and the torque transmission rod 42 adopts a reinforced structure to reduce the torsion generated by the rod itself and reduce torque loss.

[0031] The active front lip 16 includes an active front lip trim 8, an active front lip back plate 11 and a mounting bracket 10. The active front lip trim 8 and the active front lip back plate 11 are attached or bonded together by 3M tape, the mounting bracket 10 is installed on the active front lip back plate 11, and the mounting bracket 10 is connected to the connecting rod 6.

[0032] The moving mechanism 18 after the installation of various components is installed on the installation sheet metal 9, and the installation sheet metal 9 is welded to the calf protection beam 12.

[0033] In this embodiment, a motor protection cover 3 is installed on the motor 1 , and mechanism protection covers 13 are installed at both ends of the mounting frame 2 .

[0034] After installation, the motion mechanism 18 described in the present invention needs to be debugged. By debugging the position and length of the torque transfer rod 42 to change the motion trajectory of the active front lip, and with the assistance of computer simulation, the position and length of the torque transfer rod 42 are finally determined to maximize the function of the active front lip.

[0035] The principle of the active shaft 4 driving the active front lip 16 to move is as follows: the active shaft 4 outputs torque and rotates, and at the same time drives the first swing arm 20 and the second swing arm 21 to rotate. The connecting rod 6 moves according to the designed motion trajectory under the joint action of the active shaft 4 and the swing arm, thereby driving the active front lip 16 to move obliquely in the Z direction and the X direction. When the car is driving normally, the active front lip moves to the forward extension state, at which time the height of the car chassis is reduced, thereby reducing the amount of air entering the car chassis, increasing the downforce of the car, and then reducing wind resistance, so that the aerodynamic performance of the whole vehicle is improved. When encountering obstacles or rugged roads, the active front lip moves to the retracted state, at which time the height of the car chassis is increased, allowing the car to pass smoothly.

[0036] Furthermore, considering the appearance and sealing requirements, this embodiment designs a convex bump 23 on the active front lip trim 8, such as Figure 6 As shown, the active front lip 16 and the fixed front lip 15 are matched with zero clearance. This design can effectively alleviate the deformation of the fixed front lip 15 under high-speed wind pressure, enhance the sealing between the active front lip 16 and the fixed front lip 15, and enable the whole vehicle to achieve the expected aerodynamic performance.

[0037] The present invention can also change the mode of using the active front lip and the fixed front lip in combination to a fully active front lip. The fully active front lip can increase the passability of the vehicle while ensuring the improvement of the aerodynamics of the vehicle.

[0038] The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The above embodiment of the present invention can also be modified in various ways. That is, all simple, equivalent changes and modifications made according to the claims and the description of the present invention fall within the scope of protection of the claims of the present invention. The contents not described in detail in the present invention are all conventional technical contents.

Claims

1. A matching structure of an active front lip (16) and a fixed front lip (15), comprising a movement mechanism (18) for the active front lip (16), characterized in that: The active front lip (16) is recessed into the rear part of the fixed front lip (15) along the X direction and is matched with the fixed front lip (15) with zero clearance through a convex bump (23). The active front lip (16) includes an active front lip back plate (11) and a mounting bracket (10) mounted on the active front lip back plate (11). The mounting bracket (10) is connected to the connecting rod (6). The motion mechanism (18) is connected to the calf protection beam (12) through the mounting sheet metal (9) and is connected to the active front lip (16) through the mounting bracket (10). The motion mechanism (18) includes a frame (2) and a motor (1) mounted in the middle of the frame (2). Side mounting brackets are fixed at both ends of the frame (2). The side mounting plates (7) are each movably connected to a transmission mechanism (19) to drive the active front lip (16) to make oblique movements in the Z direction and the X direction relative to the fixed front lip (15), and each transmission mechanism (19) comprises a driving shaft (4), one end of which is mounted on the mounting plate (7) and the other end is connected to the motor (1), the driving shaft (4) is pivotally connected to one end of a first swing arm (20), the other end of which is fixedly connected to the connecting rod (6), the connecting rod (6) is also fixedly connected to one end of a second swing arm (21), and the other end of which is pivotally connected to a pivot button (5) provided on the side mounting plate (7).

2. The matching structure according to claim 1, characterized in that: A motor protection cover (3) is installed on the motor (1).

3. The matching structure according to claim 1, characterized in that: Mechanism protection covers (13) are installed at both ends of the frame (2).

4. The matching structure according to claim 1, characterized in that: A decorative plate (11) is attached to the outer surface of the active front lip.

5. The matching structure according to claim 1, characterized in that: The movable connection is a pivot connection.

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