Automobile underbody spoiler device

Abstract

The application discloses a car bottom turbulence device, wherein the car bottom turbulence device comprises a fixing assembly, a turbulence assembly and a reset assembly; the fixing assembly is fixedly installed on the bottom of the car; the turbulence assembly comprises an installation cylinder, the installation cylinder is rotatably installed on the fixing assembly, and a first turbulence plate and a second turbulence plate are fixedly installed on the outer edge of the installation cylinder and are arranged along the length direction of the installation cylinder, the first turbulence plate and the second turbulence plate have a first position and a second position; and part of the reset assembly is connected with the installation cylinder, another part of the reset assembly is connected with the fixing assembly, the reset assembly is used for preventing the first turbulence plate and the second turbulence plate from rotating from the first position to the second position, and the reset assembly is also used for reversely rotating the first turbulence plate and the second turbulence plate from the second position to the first position. The application aims at solving the problem of reducing the passing performance of the vehicle in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile accessories, in particular to an automobile bottom spoiler device. BACKGROUND

[0002] During driving, the automobile will encounter air resistance, and the air resistance is proportional to the square of the speed, that is, the faster the automobile drives, the greater the air resistance it receives. In order to effectively reduce and overcome the influence of air resistance when the automobile drives at high speed, a spoiler is generally arranged on the automobile to improve the grip and stability of the automobile during driving, and to save fuel.

[0003] In the prior art, a tail wing or a front spoiler of the automobile is generally used as a spoiler device of the automobile. The former performs outstandingly on a racing car, but an overly exaggerated tail wing will not be installed on a general automobile, so the effectiveness of the tail wing on a general automobile is not high. The latter generally enlarges the front bumper downward to form an air dam to block airflow, so as to reduce the airflow entering the bottom of the automobile, but this way will make the overall passability of the automobile worse. SUMMARY

[0004] The main purpose of the present application is to provide an automobile bottom spoiler device which can be automatically opened at high speed and automatically retracted at low speed.

[0005] To achieve the above purpose, the automobile bottom spoiler device provided by the present application comprises:

[0006] A fixing assembly is arranged on the bottom of the automobile.

[0007] A spoiler assembly comprises a mounting cylinder which is rotatably arranged on the fixing assembly, and a first spoiler plate and a second spoiler plate which are arranged along the length direction of the mounting cylinder and are fixed to the outer edge of the mounting cylinder. When the first spoiler plate and the second spoiler plate are in a first position, the end of the first spoiler plate away from the mounting cylinder extends towards the front of the automobile, and the end of the second spoiler plate away from the mounting cylinder extends towards the ground. The first spoiler plate and the second spoiler plate can be rotated to a second position, in which the end of the first spoiler plate away from the mounting cylinder extends towards the ground, and the end of the second spoiler plate away from the mounting cylinder extends towards the rear of the automobile. The length of the first spoiler plate is longer than that of the second spoiler plate.

[0008] A reset assembly, a part of the reset assembly is connected with the mounting cylinder, another part of the reset assembly is connected with the fixed assembly, for preventing the first spoiler and the second spoiler from rotating from the first position to the second position, the reset assembly is also used for reversely rotating the first spoiler and the second spoiler from the second position to the first position.

[0009] Optionally, further comprising a limiting assembly, the limiting assembly comprises:

[0010] A clamping structure, fixedly installed on the fixed assembly, the clamping structure is provided with a clamping groove; and,

[0011] A matching structure, provided on the inner edge of the mounting cylinder, the matching structure comprises a resilient part and a clamping column, one end of the resilient part is connected to the mounting cylinder, the other end of the resilient part is connected with the clamping column, the resilient part has a stroke along the extension direction of the clamping column, the clamping column is used for abutting and limiting the edge of the clamping structure when the first spoiler and the second spoiler are in the first position, and the clamping column is also used for cooperating and limiting the clamping groove when the first spoiler and the second spoiler are in the second position.

[0012] Optionally, a part of the clamping structure is provided as a ring structure, the inner edge of the ring structure is sleeved and fixed to the fixed assembly, the outer edge of the ring structure cooperates with the inner edge of the mounting cylinder, the limiting structure extending along the edge of the fixed assembly is further provided on the ring structure, the limiting structure is provided as an arc-shaped fixed block, the clamping groove is provided on the outer edge of the arc-shaped fixed block, and is used for cooperating and limiting the clamping column.

[0013] Optionally, a groove is provided on the inner edge of the mounting cylinder, the matching structure is movably arranged in the groove in the direction of the groove depth, and part of the matching structure extends out of the groove and cooperates with the clamping structure.

[0014] Optionally, the resilient part is provided as a spring, one end of the spring is fixedly connected to the groove bottom, and the other end of the spring is fixed to the clamping column.

[0015] Optionally, the number of the reset assemblies is two, and the two reset assemblies are respectively installed between the two ends of the mounting cylinder and the fixed assembly; the number of the limiting assemblies is two, and the two limiting assemblies are respectively installed in the two ends of the mounting cylinder.

[0016] Optionally, the fixed assembly comprises:

[0017] Two fixed seats, used for being installed at the two ends of the bottom of the automobile, the fixed seats are provided with through holes; and,

[0018] A fixed rod is arranged in the through hole, and the fixed rod is fixedly installed on the fixing base.

[0019] Optionally, the mounting cylinder is sleeved on the fixed rod, and the mounting cylinder is rotatable about the axis of the fixed rod as the center.

[0020] Optionally, the reset structure is a torsion spring, one end of the torsion spring is connected with the mounting cylinder, and the other end of the torsion spring is connected with the fixing structure.

[0021] Optionally, the first spoiler is provided with a buffer block at one end away from the mounting cylinder; and / or,

[0022] the second spoiler is provided with a buffer block at one end away from the mounting cylinder.

[0023] In the technical scheme, the automobile bottom spoiler device comprises a fixing assembly, a spoiler assembly and a reset assembly. The fixing assembly is used to connect and fix other assemblies of the automobile bottom spoiler device to the automobile bottom. The spoiler assembly comprises a mounting cylinder rotatably installed on the fixing assembly and a first spoiler and a second spoiler arranged along the length direction of the mounting cylinder. The first spoiler is longer than the second spoiler, and the first spoiler and the second spoiler are arranged at a certain angle. In the state of low-speed driving of the automobile, the first spoiler and the second spoiler are located at a first position. At the first position, one end of the first spoiler away from the mounting cylinder is arranged to extend towards the automobile head direction, and one end of the second spoiler away from the mounting cylinder is arranged to extend towards the ground direction. At this time, due to the low-speed driving of the automobile, the air resistance acting on the second spoiler is not enough to offset the blocking force of the reset assembly. The shorter second spoiler can play a role in the spoiler at low speed, and the second spoiler is shorter and will not reduce the overall passability of the automobile. In the state of high-speed driving of the automobile, since the air resistance is proportional to the speed of the automobile, when the speed of the automobile reaches a certain limit, the air resistance will be greater than the blocking force of the reset assembly at this time. At this time, the first spoiler and the second spoiler rotate to a second position under the action of the air resistance. At the second position, one end of the first spoiler away from the mounting cylinder is arranged to extend towards the ground direction, and one end of the second spoiler away from the mounting cylinder is arranged to extend towards the automobile tail direction. At this time, the longer first spoiler can play a role in the spoiler at high speed, and the first spoiler can play a better role in the spoiler at high speed. When the automobile changes from high-speed driving to low-speed driving, the blocking force of the reset assembly is greater than the air resistance at this time. At this time, the first spoiler and the second spoiler return to the first position from the second position, so as to enhance the passability of the automobile. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only show some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the drawings shown without creative labor.

[0025] Figure 1 A perspective structural schematic view of an embodiment of the automobile bottom spoiler provided by the present application;

[0026] Figure 2 A perspective structural schematic view of an embodiment of the automobile bottom spoiler provided by the present application; Figure 1 A partial enlarged view of A in FIG. 1;

[0027] Figure 3 A perspective structural schematic view of an embodiment of the automobile bottom spoiler provided by the present application; Figure 1 A sectional view of B-B in FIG. 1.

[0028] Explanation of reference signs:

[0029]

[0030] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0033] In addition, the description related to "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0034] The automobile will encounter air resistance in the process of driving, and the air resistance is proportional to the square of the speed, that is, the faster the automobile drives, the greater the air resistance it receives. In order to effectively reduce and overcome the influence of air resistance when the automobile drives at high speed, a spoiler is generally arranged on the automobile to improve the grip and stability of the automobile when driving, and to save fuel.

[0035] In the prior art, a tail wing or a front spoiler of the automobile is generally used as a spoiler device of the automobile. The former performs outstandingly on the racing car, but an over-dramatic tail wing will not be installed on the general automobile, so the effectiveness of the tail wing on the general automobile is not high. The latter generally enlarges the front bumper downward to form an air dam to block the airflow, so as to reduce the airflow entering the bottom of the automobile, but this way will make the overall passability of the automobile worse.

[0036] To solve the above problems, the present application provides a bottom spoiler device of an automobile, which aims to provide a bottom spoiler device of an automobile that can be automatically opened under high-speed working condition and automatically retracted under low-speed working condition, Figures 1 to 3 The structural schematic diagram of an embodiment of the bottom spoiler device of the automobile provided by the present application.

[0037] Please refer to Figures 1 to 3The application discloses a car bottom turbulence device 1000, which comprises a fixing assembly 1, a turbulence assembly 2 and a reset assembly 3. The fixing assembly 1 is fixedly installed on the bottom of the car. The turbulence assembly 2 comprises an installation cylinder 21, which is rotatably installed on the fixing assembly 1, and a first turbulence plate 22 and a second turbulence plate 23, which are fixed on the outer edge of the installation cylinder 21 and extend along the length direction of the installation cylinder 21. When the first turbulence plate 22 and the second turbulence plate 23 are located at a first position, the end of the first turbulence plate 22, which is away from the installation cylinder 21, extends towards the car head direction, and the end of the second turbulence plate 23, which is away from the installation cylinder 21, extends towards the ground direction. The first turbulence plate 22 and the second turbulence plate 23 can rotate to a second position. In the second position, the end of the first turbulence plate 22, which is away from the installation cylinder 21, extends towards the ground direction, and the end of the second turbulence plate 23, which is away from the installation cylinder 21, extends towards the car tail direction. The length of the first turbulence plate 22 is longer than that of the second turbulence plate 23. The reset assembly 3 is connected with the installation cylinder 21 and the fixing assembly 1, and is used for preventing the first turbulence plate 22 and the second turbulence plate 23 from rotating from the first position to the second position. The reset assembly 3 is also used for reversely rotating the first turbulence plate 22 and the second turbulence plate 23 from the second position to the first position.

[0038] The automobile bottom turbulence device 1000 comprises a fixing assembly 1, a turbulence assembly 2 and a reset assembly 3. The fixing assembly 1 is used to connect and fix other assemblies of the automobile bottom turbulence device 1000 to the automobile bottom. The turbulence assembly 2 comprises a mounting cylinder 21 rotatably mounted on the fixing assembly 1 and a first turbulence plate 22 and a second turbulence plate 23 extending along the length direction of the mounting cylinder 21. The first turbulence plate 22 is longer than the second turbulence plate 23, and the first turbulence plate 22 and the second turbulence plate 23 are arranged at a certain angle. In the state of low-speed driving of the automobile, the first turbulence plate 22 and the second turbulence plate 23 are located at a first position. In the first position, the end of the first turbulence plate 22 away from the mounting cylinder 21 extends towards the automobile head direction, and the end of the second turbulence plate 23 away from the mounting cylinder 21 extends towards the ground direction. At this time, due to the low-speed driving of the automobile, the air resistance received by the second turbulence plate 23 is not enough to offset the blocking force of the reset assembly 3. The shorter second turbulence plate 23 can play a role in turbulence under low-speed conditions, and because the second turbulence plate 23 is shorter, it will not reduce the overall passability of the automobile. In the state of high-speed driving of the automobile, because the air resistance is proportional to the speed of the automobile, when the speed of the automobile reaches a certain limit, the air resistance will be greater than the blocking force of the reset assembly 3 at this time. At this time, the first turbulence plate 22 and the second turbulence plate 23 rotate to a second position under the action of air resistance. In the second position, the end of the first turbulence plate 22 away from the mounting cylinder 21 extends towards the ground direction, and the end of the second turbulence plate 23 away from the mounting cylinder 21 extends towards the automobile tail direction. At this time, the longer first turbulence plate 22 can play a role, and has a better turbulence effect under the high-speed driving state of the automobile. When the automobile changes from high-speed driving to low-speed driving, the blocking force of the reset assembly 3 is greater than the air resistance. At this time, the first turbulence plate 22 and the second turbulence plate 23 return to the first position from the second position, so as to enhance the passability of the automobile.

[0039] Further, in order to enhance the stability of the automobile bottom spoiler 1000, a limiting assembly 4 is further included, which comprises a clamping structure 41 and a matching structure 42. The clamping structure 41 is fixedly installed on the fixing assembly 1, and a clamping groove 413 is arranged on the clamping structure 41. The matching structure 42 is arranged on the inner edge of the mounting cylinder 21, and comprises an elastic part 421 and a clamping column 422. One end of the elastic part 421 is connected to the mounting cylinder 21, and the other end of the elastic part 421 is connected to the clamping column 422. The elastic part 421 has a stroke along the extension direction of the clamping column 422. The clamping column 422 is used to abut and limit the edge of the clamping structure 41 when the first spoiler plate 22 and the second spoiler plate 23 are in the first position, and is also used to cooperate with the clamping groove 413 when the first spoiler plate 22 and the second spoiler plate 23 are in the second position.

[0040] In detail, when the first spoiler plate 22 and the second spoiler plate 23 are in the first position, in addition to the effect of the reset assembly 3, the cooperation between the limiting assembly 4 can also play a certain role. Since the matching structure 42 is arranged on the inner edge of the mounting cylinder 21, the matching structure 42 also has an initial first position. When the speed of the automobile increases, the first spoiler plate 22 and the second spoiler plate 23 rotate to the second position under the action of air resistance. At this time, the matching structure 42 rotates synchronously with the spoiler assembly 2, while the clamping structure 41 is fixed, so that the elastic part 421 in the matching structure 42 is compressed, the clamping column 422 is disengaged from the limiting in the first position, and rotates to the corresponding second position and cooperates with the clamping groove 413 on the clamping structure 41, which can stabilize the first spoiler plate 22 and the second spoiler plate 23 to a certain extent. When the speed of the automobile changes slightly, this change will not produce the effect of the reset assembly 3. At this time, due to the cooperation of the clamping groove 413 and the clamping column 422, the first spoiler plate 22 and the second spoiler plate 23 will not shake frequently, so that the spoiler process is unstable. In addition, in other embodiments, the limiting assembly 4 can also be arranged as magnets respectively installed on the fixing device and the spoiler device and capable of cooperating with each other. When the air resistance of the automobile is greater than the magnetic force of the cooperating magnets, the spoiler assembly 2 will rotate.

[0041] Further, please refer to Figures 2 to 3Characterized in that, the clamping structure 41 is partly provided as a ring structure 411, the inner edge of the ring structure 411 is sleeved and fixed to the fixed assembly 1, the outer edge of the ring structure 411 is matched with the inner edge of the mounting cylinder 21, the limiting structure 412 extending along the edge of the fixed assembly 1 is further provided on the ring structure 411, the limiting structure 412 is provided as an arc-shaped fixed block, the clamping groove 413 is provided on the outer edge of the arc-shaped fixed block, used for cooperating with the clamping column 422 to limit. In the embodiment, the ring structure 411 can be matched with the fixed assembly 1 and the mounting cylinder 21, and plays a role in enabling the arc-shaped fixed block to be installed on the ring structure 411. In addition, the limiting structure 412 is provided as an arc-shaped fixed block, when the cooperating structure 42 is located at the first position, the clamping column 422 is clamped with one end of the arc-shaped fixed block, the end of the arc-shaped fixed block matched with the clamping column 422 is provided in an inclined manner, facilitating the clamping column 422 to be detached from the arc-shaped fixed block when rotating. In addition, the position where the upper clamping groove 413 of the arc-shaped fixed block is matched with the clamping column 422 is also provided in an inclined manner, facilitating the clamping column 422 to be detached from the clamping groove 413.

[0042] In addition, please refer to Figure 3 In some embodiments, the inner edge of the mounting cylinder 21 is provided with a groove 211, the cooperating structure 42 is movably arranged in the groove 211 in the direction of the groove depth, and part of the cooperating structure 42 protrudes out of the groove 211 and cooperates with the clamping structure 41. In the embodiment, the groove 211 is arranged at the connection between the mounting cylinder 21 and the second spoiler 23, and the groove bottom of the groove 211 extends to the inside of the second spoiler 23. In other embodiments, the groove 211 can also be arranged at other positions of the mounting cylinder 21. In the present application, the groove 211 is arranged at the connection of the second spoiler 23, which can ensure a certain groove depth, can be used to install the elastic part 421 with better elastic performance, and provides a sufficient avoidance space for the clamping column 422 during rotation, so that the spoiler assembly 2 can rotate more smoothly.

[0043] In addition, the elastic part 421 is provided as a spring, one end of the spring is fixedly connected to the groove bottom of the groove 211, and the other end of the spring is fixed to the clamping column 422. In other embodiments, the elastic part 421 can also be designed as other structures, such as high-molecular organic rubber, etc. In the present application, the spring is selected as the elastic part 421, which has the advantages of good reset performance, excellent mechanical performance, and high strength and good performance after the external force is removed.

[0044] In order to enhance the reliability of the automobile bottom spoiler 1000, the number of the reset assemblies 3 is set to two groups, and the two groups of the reset assemblies 3 are respectively arranged between the two end sides of the mounting cylinder 21 and the fixed assembly 1; the number of the limiting assemblies 4 is set to two groups, and the two groups of the limiting assemblies 4 are respectively arranged in the two end sides of the mounting cylinder 21. In this embodiment, since one group of the reset assemblies 3 and the limiting assemblies 4 are additionally arranged, the limiting and resetting effects are better, and the stability is stronger. Even if one group fails, the other group can still complete the work.

[0045] In addition, the fixed assembly 1 comprises two fixed seats 11 and a fixed rod 12. The two fixed seats 11 are arranged at the two ends of the automobile bottom, and the fixed seat 11 is provided with a through hole. The fixed rod 12 is arranged in the through hole, and the fixed rod 12 is fixedly arranged on the fixed seat 11. Specifically, the fixed assembly 1 can be arranged at the bottom of the automobile front bumper and the front tire.

[0046] Further, the mounting cylinder 21 is arranged on the fixed rod 12, and the mounting cylinder 21 can rotate around the axis of the fixed rod 12. The fixed rod 12 is arranged in a cylindrical shape, which facilitates the cooperation and arrangement of the mounting cylinder 21 and the fixed rod 12, and facilitates the rotation of the mounting cylinder 21 along the fixed rod 12.

[0047] In addition, in some embodiments, the reset structure is arranged as a torsion spring 31. One end of the torsion spring 31 is connected with the mounting cylinder 21, and the other end of the torsion spring 31 is connected with the fixed structure. When the first spoiler plate 22 and the second spoiler plate 23 are located at the first position, the torsion spring 31 is in an initial state, and is used to fix the spoiler assembly 2 to the first position. When the automobile runs at a high speed, the first spoiler plate 22 and the second spoiler plate 23 are located at the second position, and the torsion spring 31 is in a stretched state due to being fixed to the mounting cylinder 21 on one side and to the fixed structure on the other side. After the wind resistance is reduced, the torsion spring 31 has a restoring force, so that the first spoiler plate 22 and the second spoiler plate 23 return to the first position.

[0048] In some other embodiments, the first spoiler 22 is provided with a buffer block away from one end of the mounting cylinder 21, and the second spoiler 23 is provided with a buffer block away from one end of the mounting cylinder 21. Specifically, the buffer block can be made of rubber or the like, and can play a silencing and protection effect when the spoiler assembly 2 collides with the bottom of the vehicle by accident when rotating. In addition, the first spoiler 22 and the second spoiler 23 can be made of EPDM or the like, which is light and has good toughness, and the mounting cylinder 21 and the fixed rod 12 can be made of ABS, POM or light alloy, which has high strength.

[0049] The above description is only the preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like within the inventive concept of the present application, and the contents of the specification and drawings are included in the patent protection scope of the present application.

Claims

1. An automobile underbody turbulence device characterized by comprising: The application relates to a spoiler device, which comprises: a fixing assembly for fixing installation on the bottom of a car; a spoiler assembly, which comprises a mounting cylinder rotatably mounted on the fixing assembly, and a first spoiler plate and a second spoiler plate fixed on the outer edge of the mounting cylinder and arranged along the length direction of the mounting cylinder, wherein the first spoiler plate extends away from one end of the mounting cylinder towards the front of the car and the second spoiler plate extends away from one end of the mounting cylinder towards the ground when the first spoiler plate and the second spoiler plate are in a first position; the first spoiler plate and the second spoiler plate can rotate to a second position, wherein the first spoiler plate extends away from one end of the mounting cylinder towards the ground and the second spoiler plate extends away from one end of the mounting cylinder towards the rear of the car, and the length of the first spoiler plate is longer than that of the second spoiler plate; a reset assembly, one part of which is connected with the mounting cylinder and the other part of which is connected with the fixing assembly, for preventing the first spoiler plate and the second spoiler plate from rotating from the first position to the second position, and for reversely rotating the first spoiler plate and the second spoiler plate from the second position to the first position; the spoiler device further comprises a limiting assembly, which comprises: a clamping structure fixedly mounted on the fixing assembly, and a clamping groove arranged on the clamping structure; and a matching structure arranged on the inner edge of the mounting cylinder, which comprises an elastic part and a clamping column, one end of the elastic part is connected with the mounting cylinder, the other end of the elastic part is connected with the clamping column, the elastic part has a stroke along the extension direction of the clamping column, the clamping column is used for abutting and limiting the edge of the clamping structure when the first spoiler plate and the second spoiler plate are in the first position, and the clamping column is also used for cooperating with the clamping groove to limit when the first spoiler plate and the second spoiler plate are in the second position. Part of the clamping structure is arranged as a ring structure, the inner edge of the ring structure is sleeved and fixed to the fixing assembly, the outer edge of the ring structure cooperates with the inner edge of the mounting cylinder, and the limiting assembly arranged along the edge of the fixing assembly is further arranged on the ring structure, the limiting assembly is arranged as an arc-shaped fixed block, the clamping groove is arranged on the outer edge of the arc-shaped fixed block and is used for cooperating with the clamping column to limit. A groove is arranged on the inner edge of the mounting cylinder, the matching structure is movably arranged in the groove along the groove depth direction, and part of the matching structure extends out of the groove and cooperates with the clamping structure.

2. The automobile bottom spoiler device as set forth in claim 1, wherein The elastic part is arranged as a spring, one end of the spring is fixedly connected to the groove bottom, and the other end of the spring is fixed to the clamping column.

3. The automobile bottom spoiler device as set forth in claim 1, wherein The number of the reset assemblies is two, and the two reset assemblies are respectively arranged between the two ends of the mounting cylinder and the fixing assembly; the number of the limiting assemblies is two, and the two limiting assemblies are respectively arranged in the two ends of the mounting cylinder.

4. The automobile bottom spoiler device as set forth in claim 3, wherein The fixing assembly comprises:

5. The automobile bottom spoiler device as set forth in claim 1, wherein ​ 6. The automobile bottom spoiler device as set forth in claim 1, wherein ​ Two fixing bases are arranged at two ends of the bottom of the automobile, and a through hole is arranged on each of the fixing bases. A fixing rod is arranged in the through hole, and the fixing rod is fixedly arranged on the fixing base.

7. The automobile bottom spoiler device as set forth in claim 6, wherein The mounting cylinder is sleeved on the fixing rod, and the mounting cylinder can rotate around the axis of the fixing rod as the center.

8. The automobile bottom spoiler device as set forth in claim 1, wherein The reset assembly is a torsion spring, one end of the torsion spring is connected with the mounting cylinder, and the other end of the torsion spring is connected with the fixing assembly.

9. The automobile bottom spoiler device as set forth in claim 1, wherein The first spoiler is provided with a buffer block at one end away from the mounting cylinder; and / or The second spoiler is provided with a buffer block at one end away from the mounting cylinder.

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