Active rear diffuser for vehicle

Abstract

The utility model provides an active rear diffuser of a vehicle. The active rear diffuser comprises a diffuser body frame, a driving assembly connected to the diffuser body frame and a blade assembly connected to the far end of a connecting rod assembly. The driving assembly comprises a motor and a connecting rod assembly connected to one side of the motor; the motor works to drive the connecting rod assembly to drive the blades to reciprocate in the front-back direction of the diffuser frame main body frame. The utility model has the beneficial effects that the aerodynamic performance of the whole vehicle is dynamically changed, the stability of the high-speed vehicle condition of the vehicle is improved, the driving safety of the vehicle is ensured, and the resistance of the medium-low speed vehicle condition is reduced, so that the oil consumption is reduced. And meanwhile, when the vehicle is in a non-working state, the smoothness of the appearance of the whole vehicle can be improved, and the practical and attractive functions are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle diffusers, and in particular relates to an active rear diffuser for a vehicle. Background Art

[0002] With the continuous development of the automobile industry, consumers' demands for vehicle use have become more and more diversified. In addition to meeting the basic needs of vehicles, they also need to meet the needs of vehicle safety and operational stability. When a car is driving at high speed, the body of the car flows in the air at high speed, generating aerodynamic lift, which will lift the car up, reduce the pressure between the tires and the ground, and reduce the adhesion performance. This will cause the "floating" high-speed aerodynamic instability phenomenon, causing the driving vehicle to lose its sense of the road, the vehicle's steering system to react slowly, and in more serious cases, the driver will lose control of the vehicle.

[0003] Usually, racing cars and sports cars use fixed front wings, rear wings, diffusers and other aerodynamic kits to improve the aerodynamic performance of the car during driving, reduce the air resistance of the car, and increase the aerodynamic downforce. However, since passenger cars or sedans are not frequently used in daily high-speed driving conditions, if they are also equipped with traditional fixed aerodynamic kits, although they can improve the stability when driving at high speeds, they will always be subject to excess downforce when the vehicle is in the medium and low speed conditions of daily commuting, which will increase unnecessary friction resistance and increase fuel consumption. Utility Model Content

[0004] In order to better solve the above technical problems, the utility model provides an active rear diffuser for a vehicle. The system can automatically extend and retract the rear diffuser to adjust the direction and angle of the airflow at the rear of the vehicle according to changes in vehicle speed and driving conditions, thereby achieving the best aerodynamic effect.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] Vehicle active rear diffuser, including,

[0007] Diffuser body frame;

[0008] A driving assembly connected to the diffuser main frame, comprising a motor and a connecting rod assembly connected to one side of the motor;

[0009] The blade assembly comprises a blade connected to the distal end of the connecting rod assembly. When the motor works, it drives the connecting rod assembly to drive the blade to reciprocate along the front-rear direction of the diffuser frame main body frame.

[0010] Preferably, the connecting rod assembly includes a rocker shaft connected to the motor via a spline, and a connecting rod connected to the other end of the rocker shaft, and the distal end of the connecting rod is connected to the blade.

[0011] Preferably, a group of guide rails are symmetrically arranged on the diffuser main body frame, and the blades are connected to the guide rails through U-shaped sliders, the U-shaped sliders are slidably buckled on the guide rails, and the open ends of the U-shaped sliders are fixedly connected to the blades.

[0012] Preferably, the distal end of the link is pivotally connected to the surface of the blade.

[0013] Preferably, the axis of the guide rail is consistent with the movement direction of the blade.

[0014] Preferably, the diffuser main frame is fixedly connected to the diffuser bracket, and the blades reciprocate in the diffuser bracket.

[0015] Preferably, the blade consists of an upper blade and a lower blade fixed below the upper blade.

[0016] The beneficial effects of the utility model are as follows: the utility model changes the aerodynamic performance of the whole vehicle in a dynamic form, which not only improves the stability of the vehicle in high-speed conditions, ensures the driving safety of the vehicle, but also reduces the resistance in medium and low-speed conditions, thereby reducing fuel consumption. At the same time, when the vehicle is not in working state, it can improve the smoothness of the appearance of the whole vehicle, combining practical and aesthetic functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 : A three-dimensional structural schematic diagram of the utility model.

[0019] Figure 2 : A three-dimensional structural schematic diagram of the utility model from another angle.

[0020] Figure 3 : The utility model Figure 1 Schematic diagram of the explosion structure. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following Figure 1-Figure 3 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The utility model proposes an active rear diffuser for a vehicle, comprising a diffuser main frame 2, a driving assembly connected to the diffuser main frame 2, and a blade assembly connected to the driving assembly. The driving assembly comprises a motor 5 connected to the middle of the diffuser main frame 2 and a connecting rod assembly 3 connected to one side of the motor 5. The connecting rod assembly has various forms. The connecting rod assembly 3 used in this embodiment comprises a rocker shaft connected to the motor 5 through a spline 31, and a connecting rod connected to the other end of the rocker shaft, and the distal end of the connecting rod is pivotally connected to the blade assembly.

[0023] The blade assembly includes a blade 4 connected to the distal end of the connecting rod assembly 3. The motor 5 works to drive the connecting rod assembly to drive the blade to reciprocate along the front-to-back direction of the diffuser frame main frame 2.

[0024] A group of guide rails 2 are symmetrically arranged on the diffuser main frame 2, and the guide rails 2 are respectively arranged on both sides of the driving assembly. The axial direction of the guide rail 2 is consistent with the movement direction of the blade assembly. The blade 4 is connected to the guide rail 2 through a U-shaped slider 41. Specifically, the U-shaped slider 41 is buckled on the guide rail 2 through a U-shaped opening, and the open end of the U-shaped slider 41 is fixedly connected to the blade 4. When the blade moves, the U-shaped slider 41 will reciprocate on the guide rail. The movement of the blade can be made more stable by the guide rail 2 and the U-shaped slider 41.

[0025] In this embodiment, the blade 4 is composed of an upper blade and a lower blade fixed below the upper blade. The distal end of the connecting rod is connected to the upper surface of the upper blade. The diffuser main frame 2 is fixedly connected to the diffuser bracket 1, and the blade 4 reciprocates in the diffuser bracket 1. The diffuser bracket 1 is generally flat, and an opening is provided in the middle for the blade 4 to reciprocate. The specific structure of the diffuser bracket is not limited here, and the structure can be set according to different applicable vehicle models to improve the aesthetics of the vehicle.

[0026] In specific applications, the diffuser of the utility model is set at the rear of the vehicle, and the motor will be electrically connected to the vehicle's control system. When the vehicle enters a high-speed driving condition, the motor drives the rocker shaft to rotate, and the rocker shaft moves with the connecting rod, and the U-shaped slider fixed with the blade slides on the guide rail, and the blade is pushed out of the diffuser bracket by the connecting rod, so that the tail airflow is adjusted to a larger angle to increase downforce and stability.

[0027] When the vehicle exits high-speed driving condition: the motor drives the rocker shaft to rotate, the rocker shaft moves with the connecting rod, the U-shaped slider fixed to the blade slides in the other direction on the guide rail, the blade is pulled back under the action of the connecting rod, and the tail airflow is adjusted to a smaller angle to reduce resistance and fuel consumption.

[0028] The utility model provides an active rear diffuser for a vehicle, which adopts a structure driven by a motor-driven crank rocker to realize the translational movement of the blades relative to the diffuser bracket 1 along the length direction of the vehicle body. When the vehicle speed is high, the blades are automatically extended, and when the vehicle speed is reduced, the blades are automatically gradually retracted.

[0029] Finally, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle active rear diffuser, characterized in that: include, Diffuser body frame; A driving assembly connected to the diffuser main frame, comprising a motor and a connecting rod assembly connected to one side of the motor; The blade assembly comprises a blade connected to the distal end of the connecting rod assembly. When the motor works, it drives the connecting rod assembly to drive the blade to reciprocate along the front-rear direction of the diffuser frame main body frame.

2. The vehicle active rear diffuser according to claim 1, characterized in that: The connecting rod assembly comprises a rocker shaft connected to the motor through a spline, and a connecting rod connected to the other end of the rocker shaft, and the distal end of the connecting rod is connected to the blade.

3. The vehicle active rear diffuser according to claim 1, characterized in that: A group of guide rails are symmetrically arranged on the diffuser main body frame, and the blades are connected to the guide rails through U-shaped sliders. The U-shaped sliders are slidably buckled on the guide rails, and the open ends of the U-shaped sliders are fixedly connected to the blades.

4. The vehicle active rear diffuser according to claim 2, characterized in that: The distal end of the connecting rod is pivotally connected to the surface of the blade.

5. The vehicle active rear diffuser according to claim 3, characterized in that: The axis of the guide rail is consistent with the moving direction of the blade.

6. The vehicle active rear diffuser according to claim 1, characterized in that: The diffuser main frame is fixedly connected to the diffuser bracket, and the blades reciprocate in the diffuser bracket.

7. The vehicle active rear diffuser according to claim 1, characterized in that: The blade consists of an upper blade and a lower blade fixed below the upper blade.

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