CN116620433A - Diffuser assembly and vehicle - Google Patents

Abstract

The disclosure relates to the technical field of auto parts, and provides a diffuser assembly and a vehicle. The diffuser assembly includes a diffuser and a sliding plate, and the sliding plate is slidably matched with the diffuser; The device is rotatably connected with the vehicle body; the diffuser is rotatably connected with the vehicle body through the second transmission device; the first transmission device is connected with the drive device; wherein the drive device is used to drive the first transmission device to rotate, The sliding plate is made to slide relative to the diffuser and drives the diffuser to rotate after the sliding plate abuts against the limiting structure on the diffuser. The diffuser assembly and the vehicle have a compact body structure when driving at low speeds, and can prevent the airflow flowing through the bottom of the car from moving upward along the diffuser prematurely in the lower area of the rear bumper when driving at high speeds, reducing the speed of the vehicle when driving at high speeds. The advantages of wind resistance and energy consumption.

Description

Diffuser assembly and vehicle

technical field

The present disclosure relates to the technical field of auto parts, in particular to a diffuser assembly and a vehicle.

Background technique

A diffuser is a covering on the lower part of a car's rear bumper that optimizes the airflow through the underside of the car to reduce the wind resistance of the car.

But when the automobile in the prior art arranges the diffuser, in order to ensure the passability of the automobile, the diffuser at the lower part of the rear bumper of the automobile is often lifted higher, forming a large departure angle. In this way, when the car is running at high speed, the airflow flowing through the bottom of the car moves upward along the diffuser prematurely in the lower area of the rear bumper, which is not conducive to increasing the flow speed of the air, reducing wind resistance and reducing the car's energy consumption.

Contents of the invention

In order to solve or at least partly solve the above technical problems, the present disclosure provides a diffuser assembly and a vehicle.

The diffuser assembly provided by the present disclosure includes: a diffuser and a sliding plate, and the sliding plate is slidably matched with the diffuser;

The skateboard is rotationally connected with the vehicle body through the first transmission device;

The diffuser is rotationally connected with the vehicle body through a second transmission device;

The first transmission device is connected to the driving device;

Wherein, the driving device is used to drive the first transmission device to rotate, so that the sliding plate slides relative to the diffuser and drives the The diffuser turns.

Further, one of the diffuser and the sliding plate is provided with a sliding groove, and the other of the diffuser and the sliding plate is provided with a sliding block, and the sliding block is slidably matched with the sliding groove.

Further, the sliding plate is provided with a sliding groove, the limiting structure includes a limiting pin arranged on the diffuser, the limiting pin is connected with the diffuser, and the limiting pin can move along the The chute slides.

Further, the diffuser is provided with an escape opening, and at least part of the sliding plate can protrude along the escape opening.

Further, the protruding length L of the slide plate satisfies: L≤100mm;

And/or, when the sliding plate is extended, the angle α between the bottom of the diffuser and the horizontal direction satisfies: 0≤α≤30°.

Further, the first transmission device includes a connecting rod base, a front connecting rod and a rear connecting rod;

Both ends of the front connecting rod are respectively rotatably connected to the connecting rod base and the slide plate;

Both ends of the rear connecting rod are respectively rotatably connected to the connecting rod base and the slide plate;

The driving device is arranged on the connecting rod base for driving the front connecting rod or the rear connecting rod.

Further, the number of the first transmission device is set to be multiple, and a plurality of the first transmission devices are arranged at intervals along the width direction of the vehicle body;

A plurality of the first transmission devices are all connected to a transmission shaft, and the driving device is connected to the transmission shaft.

Further, the second transmission device includes: a body bracket and a body connecting rod, the two ends of the body connecting rod are respectively rotatably connected to the vehicle body and the body bracket.

Further, it also includes the rear bumper skin;

The diffuser includes an overlapping portion disposed within the rear bumper skin.

A second aspect of the present disclosure provides a vehicle, including the diffuser assembly described in the first aspect.

Further, it also includes: a controller and a speed detection device;

The speed detection device and the drive device are respectively connected to the controller;

The controller is used for controlling the drive device according to the speed signal detected by the speed detection device.

Compared with the prior art, the technical solutions provided by the embodiments of the present disclosure have the following advantages:

The diffuser assembly provided by the embodiment of the present disclosure includes a diffuser and a slide plate, and the slide plate is slidably matched with the diffuser; the slide plate is rotationally connected with the vehicle body through the first transmission device; the diffuser is rotationally connected with the vehicle body through the second transmission device; the first transmission The device is connected with the driving device; wherein, the driving device is used to drive the first transmission device to rotate, so that the slide plate slides relative to the diffuser and drives the diffuser to rotate after the slide plate abuts against the limit structure on the diffuser. The driving device drives the first transmission device to realize the rotary motion of the slide plate relative to the vehicle body, the sliding cooperation between the slide plate and the diffuser realizes the translational movement of the slide plate relative to the diffuser, so that the slide plate can extend out of the diffuser, and the second drive device enables the diffuser to move Driven by the skateboard, the rotational movement relative to the body at a certain angle can be achieved synchronously, which can effectively prevent the airflow flowing through the bottom of the car from moving upward along the diffuser prematurely in the lower area of the rear bumper, and finally realize the improvement of the diffuser. The flow speed of the vehicle is reduced and the wind resistance is reduced, thereby reducing the energy consumption of the vehicle at high speed. The embodiment of the disclosure can change the inclination angle of the diffuser to make it closer to the ground, and at the same time make the slide plate extend a flat area rearward along the lower plane of the diffuser, effectively increasing the airflow velocity at the bottom and reducing the wind resistance of the car. The device can reduce the energy consumption of the vehicle and increase the mileage of the vehicle.

In addition, an embodiment of the present disclosure also provides a vehicle, each of which includes the above-mentioned diffuser assembly, capable of achieving all the beneficial effects of the above-mentioned diffuser assembly, which will not be repeated here.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings without paying creative labor.

Fig. 1 is a cross-sectional view of a diffuser assembly provided in an embodiment of the present application at a first position;

Fig. 2 is a cross-sectional view of the diffuser assembly provided in the embodiment of the present application in a second position;

Fig. 3 is a structural diagram of the driving device in the diffuser assembly provided by the embodiment of the present application;

Fig. 4 is a partial enlarged view of the rotating link in the diffuser assembly provided by the embodiment of the present application;

Fig. 5 is a three-dimensional structure diagram of the diffuser assembly provided by the embodiment of the present application;

Fig. 6 is a schematic diagram of the diffuser assembly provided in the embodiment of the present application in the first position;

Fig. 7 is a schematic diagram of the diffuser assembly provided in the embodiment of the present application in a second position.

Reference signs: 1, bottom guard plate; 11, body bracket; 12, body connecting rod; 13, rear bumper side bracket; 2, diffuser; 21, limit pin; 22, avoidance opening; 23, overlapping portion; 3. Skateboard; 31. Chute; 4. Driving device; 41. Driving motor; 411. Crank; 42. Connecting rod base; 43. Front connecting rod; 44. Rear connecting rod; 5. Rear bumper skin.

Detailed ways

In order to more clearly understand the above objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, in the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present disclosure, but the present disclosure can also be implemented in other ways than described here; obviously, the embodiments in the description are only some of the embodiments of the present disclosure, and Not all examples.

As shown in Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6 and Figure 7, the diffuser assembly provided by the embodiment of the present disclosure includes a diffuser 2 and a slide plate 3, and the slide plate 3 slides with the diffuser 2 Cooperation; the slide plate 3 is rotationally connected with the vehicle body through the first transmission device; the diffuser 2 is rotationally connected with the vehicle body through the second transmission device; the first transmission device is connected with the driving device 4; wherein the driving device 4 is used to drive the first transmission device to rotate , so that the slide plate 3 slides relative to the diffuser 2 and drives the diffuser 2 to rotate after the slide plate 3 abuts against the limiting structure on the diffuser 2 . The driving device 4 drives the first transmission device to realize the rotational movement of the sliding plate 3 relative to the vehicle body, and the sliding cooperation between the sliding plate 3 and the diffuser 2 realizes the translational movement of the sliding plate 3 relative to the diffuser 2, so that the sliding plate 3 can extend out of the diffuser 2, The second transmission device enables the diffuser to rotate at a certain angle relative to the vehicle body synchronously under the drive of the skateboard, which can effectively prevent the airflow flowing through the bottom of the car from moving upward along the diffuser 2 prematurely in the lower area of the rear bumper , and finally realize the increase of the flow velocity of the air at the diffuser 2 and the reduction of the wind resistance, thereby reducing the energy consumption of the vehicle at high speed. The embodiments of the present disclosure can change the inclination angle of the diffuser 2 to make it closer to the ground, and at the same time make the slide plate 3 extend a flat area rearward along the lower plane of the diffuser 2, effectively increasing the airflow velocity at the bottom and reducing the wind resistance of the car . The device can reduce the energy consumption of the vehicle and increase the mileage of the vehicle.

Specifically, when the vehicle is in a low-speed state, the wind speed at the bottom guard plate 1 is low, and the wind resistance on the vehicle body is small. At this time, the slide plate 3 can be completely retracted to the diffuser 2, so that the diffuser 2 and the ground form a maximum The departure angle of the diffuser assembly can maintain a compact structure; when the vehicle is in a high-speed state, the wind speed at the bottom guard plate 1 is relatively high, and the wind resistance on the body is relatively large. It protrudes from the diffuser 2, so that the diffuser 2 and the ground form the smallest departure angle, so that the bottom guard 1, the diffuser 2 and the sliding plate 3 can form a longer flat area, which can effectively avoid the flow of the car The airflow at the bottom moves upward along the diffuser prematurely in the lower area of the rear bumper, which finally increases the flow speed of the air at the diffuser 2 and reduces wind resistance, thereby reducing the energy consumption of the vehicle at high speeds.

To sum up, the diffuser assembly provided by the embodiment of the present disclosure can adjust the protruding range of the sliding plate 3 relative to the diffuser 2 according to different driving speeds of the vehicle, and adjust the departure angle formed by the diffuser 2 and the ground corresponding to the negative correlation. The size enables the vehicle to maintain a compact body structure when driving at low speeds, and prevents the airflow flowing through the bottom of the car from moving upwards along the diffuser prematurely in the lower area of the rear bumper when driving at high speeds, thereby reducing the wind resistance of the vehicle at high speeds and energy consumption.

In addition, it is worth noting that the diffuser assembly is specifically but not limited to be applied to small cars, SUVs and other types of vehicles, and the method of adjusting the stretching range of the slide plate 3 relative to the diffuser 2 can be manually controlled by the driver. It can be automatically controlled by electronic control devices.

In an optional solution of this embodiment, the diffuser assembly further includes a driving device 4; the driving device 4 is connected to the first transmission device and can drive the sliding plate 3 to reciprocate in the first position and the second position along the length direction of the vehicle body. Among them, in the first position, the slide plate 3 slides out of the diffuser 2 to the greatest extent, and the diffuser 2 rotates to form the minimum departure angle with the ground; in the second position, the slide plate 3 completely slides back to the diffuser 2, diffuser 2 Turn to the maximum departure angle from the ground.

Specifically, with reference to Fig. 1 and Fig. 2 for further detailed description, by setting the above-mentioned driving device 4, the stretching range of the sliding plate 3 relative to the diffuser 2 can be adjusted by means of electronic control and automatic driving, and when the sliding plate 3 is relative to the diffuser 2 2 When it is in the first position, the slider 3 slides out of the diffuser 2 to the greatest extent, and the diffuser 2 rotates to form the minimum departure angle with the ground. At this time, the high-speed driving state of the adaptable vehicle; position, the slide plate 3 completely slides back to the diffuser 2, and the diffuser 2 rotates to form a maximum departure angle with the ground, which is suitable for the low-speed driving state of the vehicle. By arranging the above-mentioned driving device 4, the degree of automation and electronic control of the diffuser assembly can be further improved, which further facilitates the driving process of the vehicle.

In some specific embodiments, one of the diffuser 2 and the sliding plate 3 is provided with a sliding groove, and the other of the diffuser 2 and the sliding plate 3 is provided with a sliding block, and the sliding block is slidably matched with the sliding groove. When the driving device 4 drives the first transmission device to make the sliding motion of the sliding plate 3 relative to the vehicle body, it can make the sliding motion of the sliding plate 3 relative to the diffuser 2, so that the sliding plate 3 can extend out of the diffuser 2, and the air flow at the diffuser 2 can be improved. The flow speed is reduced and the wind resistance is reduced, thereby reducing the energy consumption of the vehicle at high speed.

Specifically, for further detailed description in conjunction with Fig. 3 and Fig. 5, at this time, the chute 31 is arranged in the slide plate 3, the stop pin 21 is arranged in the diffuser 2, the chute 31 is a long hole, and the long hole extending along the length direction of the vehicle body. Moreover, the chute 31 and the stop pin 21 can be arranged in multiple groups in one-to-one correspondence, and the two can be set to a clearance fit, and the stop pin 21 is movably inserted into the chute 31 and slides reciprocally along the chute 31, that is, The slider 3 can be slid out or retracted along one side of the diffuser 2 , has a simple structure and can stabilize the moving path of the limit slider 3 .

In some specific embodiments, the sliding plate 3 is provided with a sliding groove 31, and the limiting structure includes a limiting pin 21 arranged on the diffuser 2. The limiting pin 21 is connected to the diffuser 2, and the limiting pin 21 can move along the sliding groove. 31 slide. When the driving device 4 drives the first transmission device to make the slide plate 3 rotate relative to the vehicle body, it can make the slide plate 3 move in translation relative to the diffuser 2, so that the slide plate 3 can extend out of the diffuser 2. When the chute 31 and the limit pin 21 After abutment, the slide plate 3 can drive the diffuser 2, so that the diffuser can rotate relative to the vehicle body under the action of the second transmission device, so that the diffuser and the ground have a small angle, which can improve the position of the diffuser 2. The flow speed of the air is reduced and the wind resistance is reduced, thereby reducing the energy consumption of the vehicle at high speed.

In some specific implementations, the diffuser 2 is provided with an avoidance opening 22 , and at least part of the sliding plate 3 can extend out along the avoidance opening 22 . The shape of the escape port 22 is adapted to the shape of the slide plate 3 . In this way, when the vehicle is in a low-speed state, the wind speed at the bottom guard plate of the car is low, and the wind resistance on the vehicle body is small. At this time, the slide plate 3 can be completely retracted to the diffuser 2, and the diffuser and the ground form the largest distance. The corners are removed so that the overall diffuser assembly can maintain a compact structure; when the vehicle is at high speed, the wind speed at the bottom guard plate of the vehicle is relatively high, and the wind resistance on the vehicle body is relatively large. At this time, the skateboard 3 can be extended to the maximum extent. In the diffuser 2, and make the diffuser 2 and the ground form the smallest departure angle, the diffuser 2 and the sliding plate 3 can form a longer flat area, which can effectively prevent the airflow flowing through the bottom of the car from being in the rear. The lower part of the bar moves upward along the diffuser 2 prematurely, thereby increasing the air flow velocity at the diffuser 2 and reducing wind resistance, and reducing the energy consumption of the vehicle when running at high speed.

In some specific embodiments, the protruding length L of the sliding plate 3 satisfies: L≦100mm. The sliding plate 3 can protrude from the diffuser 2 to the greatest extent, and make the diffuser 2 form the smallest departure angle with the ground. When the diffuser 2 and the sliding plate 3 can form a longer flat area, it can effectively avoid the flow through The airflow at the bottom of the car moves upward along the diffuser 2 prematurely in the lower area of the rear bumper, thereby increasing the air flow velocity at the diffuser 2, reducing wind resistance, and reducing energy consumption when the vehicle is running at high speed.

In some specific embodiments, when the sliding plate 3 is extended, the angle α between the bottom of the diffuser 2 and the horizontal direction satisfies: 0≤α≤30°. When the vehicle is in a high-speed state, the wind speed at the bottom guard plate of the car is relatively high, and the wind resistance on the vehicle body is relatively large. At this time, the slide plate 3 can be extended to the maximum extent of the diffuser 2, and the diffuser 2 and the ground form a small When the departure angle α, the diffuser 2 and the sliding plate 3 can form a longer flat area, which can effectively prevent the airflow flowing through the bottom of the car from moving upward along the diffuser 2 prematurely in the lower area of the rear bumper. Therefore, the velocity of the air flowing at the diffuser 2 is increased, the wind resistance is reduced, and the energy consumption of the vehicle when running at high speed is reduced.

In some specific embodiments, the first transmission device includes a connecting rod base 42, a front connecting rod 43 and a rear connecting rod 44; the two ends of the front connecting rod 43 are respectively rotatably connected with the connecting rod base 42 and the slide plate 3; The two ends of 44 are rotatably connected with the connecting rod base 42 and the slide plate 3 respectively; the driving device 4 is arranged on the connecting rod base 42 for driving the front connecting rod 43 or the rear connecting rod 44 .

A four-bar linkage mechanism can be formed between the connecting rod base 42, the front connecting rod 43, the rear connecting rod 44 and the slide plate 3; the four-link transmission mechanism drives the slide plate 3 to reciprocate along the diffuser 2 at the first position and the second position, At the same time, it drives the diffuser 2 to rotate back and forth relative to the bottom guard plate 1 . Simultaneously through the four-bar linkage formed between the connecting rod base 42, the front connecting rod 43, the rear connecting rod 44 and the slide plate 3, the slide plate 3 slides relative to the diffuser 2 and drives the diffuser 2 to rotate relative to the vehicle body. The angle between the diffuser and the ground. When the slide plate 3 extends out of the diffuser 2, the diffuser 2 has a small angle with the ground, and when the slide plate 3 retracts to the diffuser 2, the diffuser 2 has a large angle with the ground.

Specifically, with reference to Fig. 1, Fig. 2 and Fig. 3 for further detailed description, the drive device 4 is connected to the slide plate 3 through a four-bar linkage transmission mechanism, so that the four-bar linkage transmission mechanism can output a single "rotation" of the drive device 4, Converted to "translation + rotation" in the four-link transmission mechanism, so that the slide plate 3 can not only slide along the diffuser 2, but also rotate with the diffuser 2 relative to the bottom guard plate 1 at the same time. Moreover, the motion trajectory of the four-link transmission mechanism is cyclical. Even if the driving device 4 only outputs "rotation" in a single direction, the four-link transmission mechanism can convert it into "translation + rotation" of the 3-cycle reciprocating slide plate.

The above-mentioned specific connection method between the driving device 4 and the slide plate 3 has the beneficial effect of being simple in structure and capable of stably driving the slide plate 3 back and forth “translational motion + rotation”.

In the optional solution of this embodiment, the drive device 4 includes a drive motor 41 arranged in the connecting rod base 42 and a crank 411 connected to the output shaft of the drive motor 41; Base 42 hinged front link 43; crank 411 is provided with rear link 44 respectively hinged with slide plate 3 and crank 411; crank 411, front link 43, rear link 44 and partly slide plate 3 form four link transmission mechanism.

Specifically, with reference to Fig. 1, Fig. 2 and Fig. 3 for further detailed description, the crank 411 at the output shaft of the drive motor 41, the front connecting rod 43, the rear connecting rod 44 and part of the slide plate 3 jointly form a four-bar linkage transmission mechanism In this way, when the drive motor 41 drives the crank 411 to rotate in one direction, the front connecting rod 43 and the rear connecting rod 44 can simultaneously drive the skateboard 3 to perform a "translation + rotation" movement track, ensuring that the skateboard 3 can not only stick to the diffuser 2 slides, and can also rotate with the diffuser 2 relative to the bottom guard plate 1 at the same time.

The specific arrangement of the above-mentioned four-bar linkage transmission mechanism has a simple structure and fully utilizes the component structure of the drive motor 41 and the slide plate 3 , which simplifies the number of structural components.

In some specific embodiments, the quantity of the first transmission device is set to a plurality, and the plurality of first transmission devices are arranged at intervals along the width direction of the vehicle body; the plurality of first transmission devices are all connected to the transmission shaft, and the driving device 4 is connected to the transmission shaft. shaft connection. The synchronous movement of multiple first transmission devices can be realized by driving the transmission shafts through the drive device 4 .

Optionally, the drive motor 41 is at least rotationally connected to a crank 411 in a four-bar linkage transmission mechanism. For further detailed description in conjunction with FIG. 3 , at this time along the length direction of the diffuser 2 , three four-link transmission mechanisms are sequentially arranged at intervals, and only the drive motor 41 is connected to the crank 411 in one of the four-link transmission mechanisms. Rotate connection, like this other two four-bar linkage transmission mechanisms are auxiliary driven connection with slide plate 3 as virtual constraint, to further improve the connection stability between four-bar linkage transmission mechanism and slide plate 3.

In some specific embodiments, the second transmission device includes: a body bracket 11 and a body connecting rod 12 , and the two ends of the body connecting rod 12 are rotationally connected with the vehicle body and the body bracket 11 respectively.

Specifically, with reference to Fig. 1 and Fig. 4 for further detailed description, the body bracket 11 and the body connecting rod 12, the two ends of the body connecting rod 12 are respectively rotatably connected with the vehicle body and the body bracket 11, so that when the slide plate 3 sticks to the side of the diffuser 2 When one side slides out or slides back, the diffuser 2 can rotate to a certain extent relative to the butt side of the bottom guard plate 1, and when the sliding plate 3 sticks to the side of the diffuser 2, the greater the extension range, the diffuser The diffuser 2 rotates relative to the docking side of the bottom guard plate 1 to make the departure angle between itself and the ground smaller. The rotation of the abutting side of the board 1 makes the angle of departure between itself and the ground larger. Optionally, both ends of the body link 12 are rotatably connected to the rear bumper side bracket 13 and the body bracket 11 respectively. The installation and connection arrangement of the above-mentioned diffuser 2 has a simple structure, which can stably realize the rotational docking of one end of the diffuser 2 and one end of the bottom guard plate 1, and ensure that the departure angle of the diffuser 2 relative to the ground is the same as that of the sliding plate 3. The magnitude of the diffuser 2 is a function of the negative correlation between the two.

In some specific embodiments, a rear bumper skin 5 is also included; the diffuser 2 includes an overlapping portion 23 , and the overlapping portion 23 is disposed in the rear bumper skin 5 . The diffuser 2 and the rear bumper skin 5 have a certain amount of overlapping in the adjacent area, so that the diffuser 2 is inside the rear bumper skin 5 during the movement, so as to ensure the compactness and aesthetics of the body structure .

The vehicle provided by the embodiment of the present disclosure includes a vehicle body and the diffuser assembly provided by the embodiment of the present disclosure.

In some specific embodiments, the vehicle further includes: a controller and a speed detection device; the speed detection device and the driving device are respectively connected to the controller; the controller is used to control the driving device 4 according to the speed signal detected by the speed detection device. In this way, when the speed detection device detects that the vehicle is in a low-speed state, it will generate a speed signal and pass the signal to the controller. The slide plate 3 is fully retracted to the diffuser 2, and makes the diffuser form the largest departure angle with the ground, so that the diffuser assembly can maintain a compact structure as a whole;

When the speed detection device detects that the vehicle is in a high-speed state, it will generate a speed signal and transmit the signal to the controller. Since the wind speed at the bottom guard plate of the car is relatively high and the wind resistance on the body is relatively large, the controller controls the driving device 4 Extend the sliding plate 3 to the diffuser 2 to the greatest extent, and make the diffuser form the smallest departure angle with the ground. When the diffuser 2 and the sliding plate 3 can form a longer flat area, it can effectively avoid the flow of the car The airflow at the bottom moves upward along the diffuser 2 prematurely in the lower area of the rear bumper, thereby increasing the air flow velocity at the diffuser 2 and reducing wind resistance, reducing the energy consumption of the vehicle when driving at high speed.

Wherein the speed detection device may be a speed sensor.

Specifically, the controller can be given a judgment threshold, specifically but not limited to 50km/h, when the speedometer in the vehicle body detects that the vehicle speed is greater than 50km/h, the controller will regulate the work of the driving device 4 according to the detection information of the speedometer state, the drive diffuser 2 is switched from the second position to the first position, when the speedometer in the vehicle body detects that the speed of the vehicle is less than 50km/h, the controller regulates the working state of the drive device 4 according to the detection information of the speedometer, and drives The diffuser 2 is switched from the first position to the second position.

The above-mentioned controller can be set to enable the vehicle to automatically switch the position of the diffuser 2 according to the real-time driving speed, so as to ensure that the overall structure of the vehicle can be maintained at a low speed. The airflow flowing through the bottom of the car moves upward along the diffuser prematurely in the lower area of the rear bumper to achieve the effect of increasing the flow speed of the air, reducing wind resistance, and reducing the energy consumption of the vehicle at high speeds.

To sum up, the diffuser assembly provided by the embodiment of the present disclosure can adjust the extent of the sliding plate 3 protruding from the diffuser 2 according to different driving positions of the vehicle, so that the vehicle can maintain a compact body structure when driving at low speeds, and maintain a compact body structure when driving at high speeds. At the same time, it can prevent the airflow flowing through the bottom of the car from moving upward along the diffuser prematurely in the lower area of the rear bumper, reducing the wind resistance and energy consumption of the vehicle at high speed.

It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these No such actual relationship or order exists between entities or operations. Moreover, the term "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements but also other elements not expressly listed, Or also include elements inherent in such a process, method, article or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

The above are only specific implementation manners of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. A diffuser assembly, comprising: a diffuser and a slide plate in sliding engagement with the diffuser;

the sliding plate is rotationally connected with the vehicle body through a first transmission device;

the diffuser is rotationally connected with the vehicle body through a second transmission device;

the first transmission device is connected with the driving device;

the driving device is used for driving the first transmission device to rotate, so that the sliding plate slides relative to the diffuser and drives the diffuser to rotate after the sliding plate is abutted with a limiting structure on the diffuser.

2. The diffuser assembly of claim 1 wherein one of said diffuser and said slide plate is provided with a chute and the other of said diffuser and said slide plate is provided with a slider, said slider being in sliding engagement with said chute.

3. The diffuser assembly of claim 2, wherein the slide plate is provided with a chute, the limit structure comprises a limit pin disposed on the diffuser, the limit pin is connected to the diffuser, and the limit pin is slidable along the chute.

4. The diffuser assembly of claim 1 wherein said diffuser is provided with a relief opening along which at least a portion of said slide plate is extendable.

5. The diffuser assembly of claim 1 wherein the slide extension L satisfies: l is less than or equal to 100mm;

and/or, when the sliding plate stretches out, the included angle alpha between the bottom of the diffuser and the horizontal direction meets the following conditions: alpha is more than or equal to 0 and less than or equal to 30 degrees.

6. The diffuser assembly of claim 1, wherein said first transmission comprises a link base, a front link and a rear link;

the two ends of the front connecting rod are respectively connected with the connecting rod base and the sliding plate in a rotating way;

the two ends of the rear connecting rod are respectively connected with the connecting rod base and the sliding plate in a rotating way;

the driving device is arranged on the connecting rod base and used for driving the front connecting rod or the rear connecting rod.

7. The diffuser assembly of claim 6 wherein the number of said first actuators is plural, a plurality of said first actuators being spaced apart along the width of said vehicle body;

the plurality of first transmission devices are connected with a transmission shaft, and the driving device is connected with the transmission shaft.

8. The diffuser assembly of claim 1, wherein said second transmission comprises: the body support and the body connecting rod, the both ends of body connecting rod respectively with the automobile body with body support rotates to be connected.

9. The diffuser assembly of claim 1, further comprising a rear bumper skin;

the diffuser includes an overlap disposed within the rear bumper skin.

10. A vehicle comprising a body and a diffuser assembly according to any one of claims 1 to 9.

11. The vehicle of claim 10, further comprising: a controller and a speed detection device;

the speed detection device and the driving device are respectively connected with the controller;

the controller is used for controlling the driving device according to the speed signal detected by the speed detection device.