Automobile active rear spoiler device

Abstract

The invention is suitable for the technical field of automobile spoilers, and provides an automobile active rear spoiler device which comprises a main body frame, an extension part and a rotating part are arranged at the tail of the main body frame, and the extension part is installed at the tail of the main body frame in a sliding mode. A first driving mechanism for driving the extension part to linearly move is arranged in the main body frame, the rotating part is arranged above the extension part, and a second driving mechanism for driving the rotating part to rotate is arranged in the main body frame. The device has two movement modes which do not interfere with each other, and the functions of reducing resistance and improving down force are realized separately, so that the active rear spoiler not only has two main functions of reducing resistance and improving down force, but also maximizes the pneumatic effect of each function, and different mechanisms can be selected for expansion under different working conditions.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile spoilers, and in particular relates to an automobile active rear spoiler device. Background Art

[0002] With the development of the automobile industry, people have higher and higher requirements for the handling of automobiles. Under high-speed driving conditions, the driving stability of automobiles has become an important criterion for measuring the quality of automobiles. The air will produce resistance and lift on a moving car. Under a reasonable aerodynamic shape design, the lift value is negative, that is, downforce, which helps the vehicle maintain grip and stability under high-speed driving.

[0003] Installing a rear spoiler on a vehicle can effectively increase the downforce generated by the air when driving at high speeds, but it will often increase the air resistance of the car, which will have an adverse effect on the vehicle's range. Traditional spoilers are fixed and their angles and positions cannot be adjusted, so they can only generate fixed aerodynamic forces and cannot adapt to the various working conditions that change in real time during actual driving. In recent years, active rear spoiler devices have been introduced that enable the rear spoiler to have adjustment capabilities through mechanisms, which can adjust the aerodynamic forces generated. However, current active rear spoiler devices only have one mode of movement, resulting in relatively limited adjustment range and effects. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide an active rear spoiler device for an automobile, aiming to solve the problems raised in the above-mentioned background technology.

[0005] An embodiment of the present invention is implemented as follows: an active rear spoiler device for an automobile comprises a main frame, wherein an extension portion and a rotating portion are arranged at the rear portion of the main frame, the extension portion is slidably mounted at the rear portion of the main frame, and a first driving mechanism for driving the extension portion to perform linear movement is arranged in the main frame, the rotating portion is arranged above the extension portion, and a second driving mechanism for driving the rotating portion to rotate is arranged in the main frame.

[0006] A further technical solution is that a second support arm is provided at one end of the rotating part close to the rear of the car, and the end of the second support arm away from the rotating part is rotatably mounted on a support ear piece arranged inside the main frame. A first support arm is provided at each end of the rotating part, and the end of the first support arm away from the rotating part is connected to a roller through an axis. The roller is installed on a sliding seat arranged in the main frame, and the sliding seat is provided with an arc-shaped slide groove matching the roller.

[0007] According to a further technical solution, the second driving mechanism comprises an electric push rod, a fixed end of which is hinged to a mounting seat provided inside the main frame, and a telescopic end of which is connected to a roller via a shaft.

[0008] A further technical solution is that the bottom of the extension part is connected to a connecting plate, the bottom of the connecting plate is installed with a slider, a sliding bottom plate is arranged inside the main frame, the upper surface of the sliding bottom plate is flat, and a guide rail is installed on the upper surface of the sliding bottom plate, and the slider is slidably installed on the guide rail.

[0009] According to a further technical solution, the first driving mechanism includes a gear rotatably installed in the sliding base plate, and a rack installed at the bottom of the connecting plate, and the gear is meshed with the rack. A driving module for driving the gear to rotate is also provided in the sliding base plate.

[0010] According to a further technical solution, the driving module is a motor, and an output end of the motor is connected to a gear.

[0011] An active rear spoiler device for an automobile provided by an embodiment of the present invention has two movement modes that do not interfere with each other, and the functions of reducing drag and increasing downforce are realized separately, so that the active rear spoiler not only has the two main functions of reducing drag and increasing downforce, but also maximizes the aerodynamic effect of each function, and can select different mechanisms for deployment under different working conditions. Under working conditions such as turning, the angle of the rear spoiler can be increased by rotating to achieve the purpose of increasing downforce and improving driving stability and controllability. Under working conditions such as acceleration and cruising, the length of the rear spoiler can be extended by stretching to achieve the effect of reducing air resistance and improving cruising range. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic structural diagram of an active rear spoiler device for an automobile provided by an embodiment of the present invention;

[0013] Figure 2 A schematic diagram of the structure of an extended portion of an active rear spoiler device for an automobile provided by an embodiment of the present invention when it is deployed;

[0014] Figure 3 A schematic diagram of the structure of a rotating part in an active rear spoiler device for an automobile provided by an embodiment of the present invention when it is unfolded;

[0015] Figure 4 A front view of an active rear spoiler device for an automobile provided by an embodiment of the present invention;

[0016] Figure 5 for Figure 4 Sectional views in CC, BB and AA directions;

[0017] Figure 6 for Figure 4 Sectional views in CC, BB and AA directions;

[0018] Figure 7 for Figure 4 Sectional views in CC, BB and AA directions;

[0019] Figure 8 The aerodynamic effect generated by an active rear spoiler device of an automobile in an extended state provided by an embodiment of the present invention;

[0020] Fig. 9 An aerodynamic effect generated by an active rear spoiler device of an automobile in a rotating state is provided in an embodiment of the present invention.

[0021] In the accompanying drawings: main frame 1; extension part 2; rotating part 3; mounting seat 4; electric push rod 5; sliding seat 6; roller 7; first support arm 8; gear 9; rack 10; second support arm 11; slider 12; sliding base plate 13; guide rail 14; connecting plate 15; support ear piece 16. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0024] like Figure 1-Figure 3 As shown, an active rear spoiler device for an automobile provided by an embodiment of the present invention comprises a main frame 1, the tail portion of the main frame 1 (the end of the main frame 1 away from the tail portion of the automobile is defined as its tail portion) is provided with an extension portion 2 and a rotating portion 3, the extension portion 2 is slidably mounted on the tail portion of the main frame 1, and a first driving mechanism for driving the extension portion 2 to perform linear movement is provided in the main frame 1, the rotating portion 3 is provided above the extension portion 2, and a second driving mechanism for driving the rotating portion 3 to rotate is provided in the main frame 1.

[0025] In the embodiment of the present invention, under normal conditions, the extension part 2 is retracted in the main frame 1, and the rotating part 3 is also in a closed state, and in this state, there is a gap between the rotating part 3 and the tail of the main frame 1, which is used for the extension part 2 to be extended and retracted, so that the movement of the two will not interfere with each other. When the extension part 2 is extended in the direction away from the vehicle body under the drive of the first driving mechanism, it can delay the top airflow separation and weaken the strength of the wake vortex core, thereby greatly reducing the air resistance of the car. When the rotating part 3 is driven upward by the second driving mechanism, it can form a high-pressure area in front of the spoiler, thereby generating downforce on the car and improving driving stability. In actual use, according to the required working conditions, the controller or the driver automatically or manually selects the movement mode of the device. Under acceleration and cruising conditions, the rotating part 3 is retracted and the extension part 2 is extended at the same time, which plays a role in reducing air resistance. Under braking and turning conditions, the extension part 2 is retracted and the rotating part 3 is rotated upward at the same time to increase downforce and improve handling stability.

[0026] like Figure 4 and Figure 7 As shown, as a preferred embodiment of the present invention, a second support arm 11 is provided at one end of the rotating part 3 close to the rear of the car, and the end of the second support arm 11 away from the rotating part 3 is rotatably mounted on a support ear piece 16 arranged inside the main frame 1, and a first support arm 8 is provided at each end of the rotating part 3, and the end of the first support arm 8 away from the rotating part 3 is connected to a roller 7 through an axis, and the roller 7 is installed on a sliding seat 6 arranged in the main frame 1, and an arc-shaped slide groove matching the roller 7 is provided on the sliding seat 6.

[0027] In the embodiment of the present invention, the second driving mechanism comprises an electric push rod 5, a fixed end of the electric push rod 5 is hinged to a mounting seat 4 provided inside the main frame 1, and a telescopic end of the electric push rod 5 is connected to a roller 7 via a shaft.

[0028] When in use, it is only necessary to control the electric push rod 5 to extend and retract. The electric push rod 5 can drive the roller 7 to slide in the arc-shaped slide groove. The roller 7 can drive the rotating part 3 to rotate around the connection between the second support arm 11 and the support ear piece 16 through the first support arm 8, thereby realizing the adjustment of the rotating part 3, and the rotating part 3 can be rotated upward to the specified position.

[0029] like Figure 4-Figure 6 As shown, as a preferred embodiment of the present invention, the bottom of the extension portion 2 is connected to a connecting plate 15, the bottom of the connecting plate 15 is installed with a slider 12, a sliding bottom plate 13 is arranged inside the main frame 1, the upper surface of the sliding bottom plate 13 is a plane, and a guide rail 14 is installed on the upper surface of the sliding bottom plate 13, and the slider 12 is slidably installed on the guide rail 14.

[0030] In an embodiment of the present invention, the first driving mechanism includes a gear 9 rotatably installed in the sliding base plate 13, and a rack 10 installed at the bottom of the connecting plate 15, and the gear 9 is meshed with the rack 10. The sliding base plate 13 is also provided with a driving module for driving the gear 9 to rotate. The driving module can be a motor, and the output end of the motor is connected to the gear 9, which can drive the gear 9 to rotate.

[0031] When in use, it is only necessary to control the gear 9 to rotate. Through the cooperation between the gear 9 and the rack 10, the connecting plate 15 can be driven to move linearly along the guide rail 14. The connecting plate 15 can drive the extension part 2 to move synchronously, thereby realizing the adjustment of the extension part 2.

[0032] In order to verify the actual use effect of this device, CFD simulation verification was carried out. After CFD simulation verification, the vehicle using this device can produce good aerodynamic effects in multiple modes, and both modes can produce better effects than the traditional single-mode active rear spoiler. When the active rear spoiler is extended, the vehicle's drag coefficient is reduced by 5cts, and when the rotation mode is turned on, the vehicle's lift is reduced by a maximum of 149N. Figure 8 and Fig. 9 The aerodynamic effects produced by the device in the extension and rotation states are demonstrated respectively.

[0033] from Figure 8 It can be seen that the extension of the extension part 2 delays the airflow separation on the roof, weakens the strength of the vortex core in the wake, increases the pressure on the rear window and the rear of the car, and then reduces the pressure difference resistance and thus reduces the car's drag coefficient.

[0034] from Fig. 9 It can be seen that the upward rotation of the rotating part 3 can significantly increase the pressure on the upper surface of the device and the rear windshield, thereby reducing the aerodynamic lift and achieving the purpose of improving the handling stability.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An active rear spoiler device for an automobile, comprising a main frame, characterized in that: An extension part and a rotating part are provided at the tail of the main frame. The extension part is slidably installed at the tail of the main frame, and a first driving mechanism for driving the extension part to move linearly is provided in the main frame. The rotating part is provided above the extension part, and a second driving mechanism for driving the rotating part to rotate is provided in the main frame.

2. The active rear spoiler device for an automobile according to claim 1, characterized in that: A second support arm is provided at one end of the rotating part close to the rear of the car, and an end of the second support arm away from the rotating part is rotatably mounted on a support ear piece arranged inside the main frame. A first support arm is provided at each end of the rotating part, and an end of the first support arm away from the rotating part is connected to a roller through an axis. The roller is mounted on a sliding seat arranged in the main frame, and an arc-shaped sliding groove matching the roller is provided on the sliding seat.

3. The active rear spoiler device for an automobile according to claim 2, characterized in that: The second driving mechanism comprises an electric push rod, a fixed end of the electric push rod is hinged on a mounting seat arranged inside the main frame, and a telescopic end of the electric push rod is connected to a roller through a shaft.

4. The active rear spoiler device for an automobile according to claim 1, characterized in that: The bottom of the extension part is connected with a connecting plate, the bottom of the connecting plate is installed with a slider, a sliding bottom plate is arranged inside the main frame, the upper surface of the sliding bottom plate is a plane, and a guide rail is installed on the upper surface of the sliding bottom plate, and the slider is slidably installed on the guide rail.

5. The active rear spoiler device for an automobile according to claim 4, characterized in that: The first driving mechanism includes a gear rotatably installed in the sliding base plate, and a rack installed at the bottom of the connecting plate, and the gear is meshed with the rack. The sliding base plate is also provided with a driving module for driving the gear to rotate.

6. The active rear spoiler device for an automobile according to claim 5, characterized in that: The driving module is a motor, and the output end of the motor is connected to a gear.

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