A tailgate arrangement for a vehicle

Abstract

The application discloses a kind of automobile tailgate devices, comprising: mounting bracket, tailgate;The one end of the mounting bracket is fixedly connected with the tail of vehicle body, and transmission device is arranged between the connection of the mounting bracket and the tailgate;The automobile tailgate device in the embodiment of the application is driven by the driver equipped in the lifting device and the turnover device, so that the tailgate is quickly lifted or turned over after the driver is driven by the clutch driving assembly.The setting mode can complete the lifting and turning operation of the tailgate without other elements, which not only reduces the cost of driving motor, but also reduces the overall size of the automobile tailgate.In addition, the lifting mechanism is used with the lifting arm, which improves the overall carrying capacity of the lifting mechanism, and the user can quickly lift the automobile tailgate during use, which improves the installation portability and unloading efficiency, and further improves the overall transmission efficiency of the device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobiles, in particular to a kind of automobile tailgate device. BACKGROUND

[0002] Nowadays heavy truck needs a lot of manpower to load and unload goods, and contemporary large truck needs shorter time to load and unload goods when loading and unloading, in order to more quickly load and unload goods on large truck, people design automobile tailgate, however, the internal structure of the existing automobile tailgate is very high in complexity, and the operation is complicated and the stability is low when loading and unloading goods, the automobile tailgate commonly seen in current market is usually driven by hydraulic pressure as the main power source, such automobile tailgate not only has complex structure setting but also has low service life, so that the manufacturing cost of automobile tailgate increases and the service life is shorter. The existing automobile tailgate device in current market has the problem of structural complexity. SUMMARY

[0003] The embodiment of the present application provides a kind of automobile tailgate device, the automobile tailgate device disclosed in the present application aims at overcoming the problem of structural complexity of existing automobile tailgate.

[0004] A kind of automobile tailgate device, wherein, including mounting bracket, tailgate.

[0005] One end of the mounting bracket is fixedly connected with the tail of the vehicle body, and a transmission device is arranged at the connection between the mounting bracket and the tailgate.

[0006] The transmission device includes lifting mechanism, turnover mechanism and lifting arm, the lifting mechanism and the turnover mechanism are both cylindrical structure, and the inside of the cylindrical structure is provided with a clutch driving assembly.

[0007] One side of the mounting bracket is equipped with a driver, the driver is in transmission connection with the clutch driving assembly in the lifting mechanism or the clutch driving assembly in the turnover mechanism, to drive the clutch driving assembly in the lifting mechanism and the clutch driving assembly in the turnover mechanism to act respectively by the driver.

[0008] The mounting bracket and the tailgate are connected through the lifting arm, and the two ends of the lifting mechanism are respectively connected with the mounting bracket and the middle protruding part of the lifting arm.

[0009] The lifting arm and the tailgate are rotationally connected by bolts.

[0010] The driver drives the clutch driving assembly in the turnover mechanism to make the tailgate turn from vertical angle to horizontal angle.

[0011] The driver drives the clutch driving assembly in the lifting mechanism to adjust the height of the end of the lifting arm connected with the tail plate, so that the tail plate is vertically lifted.

[0012] The automobile tail plate device, wherein the middle section of the lifting arm protrudes downward to form a protrusion, and the protrusion is rotationally connected with one end of the clutch driving assembly in the lifting mechanism through a bolt structure.

[0013] The automobile tail plate device, wherein the driver comprises a driving motor and a shaft coupling fixedly connected with the driving motor, and one side of the shaft coupling is provided with a driving wheel, and the driving motor drives the driving wheel to rotate through the shaft coupling.

[0014] The automobile tail plate device, wherein the clutch driving assembly in the lifting mechanism comprises a first gear, a clutch, a driving conversion mechanism and a first transmission rod.

[0015] The clutch driving assembly in the turnover mechanism comprises a second gear, a clutch, a driving conversion mechanism and a second transmission rod; and the first gear and the second gear are both meshingly connected with one side of the driving wheel.

[0016] The automobile tail plate device, wherein the wheel shaft of the first gear is clutchedly connected with the corresponding driving conversion mechanism through the corresponding clutch; and the first transmission rod is connected with the corresponding driving conversion mechanism to push the first transmission rod to move linearly through the driving conversion mechanism.

[0017] The wheel shaft of the second gear is clutchedly connected with the corresponding driving conversion mechanism through the corresponding clutch, and the second transmission rod is connected with the corresponding driving conversion mechanism to push the second transmission rod to move linearly through the driving conversion mechanism.

[0018] The automobile tail plate device, wherein the clutch in the lifting mechanism comprises a first transmission rod and a driving conversion mechanism.

[0019] The first gear is connected with the driving conversion mechanism, and the rotational force of the first gear is converted into linear thrust through the driving conversion mechanism to push the first transmission rod to move linearly, and the first transmission rod is extended and retracted to drive the tail plate to be lifted.

[0020] The automobile tail plate device, wherein the clutch in the turnover mechanism comprises a second transmission rod and a driving conversion mechanism.

[0021] The second gear is connected with the driving conversion mechanism, and the rotational force of the second gear is converted into linear thrust through the driving conversion mechanism to push the second transmission rod to move linearly, and the second transmission rod is extended and retracted to drive the tail plate to be turned over.

[0022] The automobile tailboard device, wherein the drive conversion mechanism comprises a lead screw, a plurality of rollers and a nut sleeved on the outer wall of the rollers.

[0023] The outer wall of the lead screw and the inner wall of the nut are provided with threads, and a plurality of rollers are clamped between the gap between the lead screw and the nut, and the rollers are simultaneously engaged with the nut and the lead screw.

[0024] The nut is connected with the first transmission rod or the second transmission rod through a connecting rod.

[0025] The automobile tailboard device, wherein the outer wall of the connecting rod is tightly arranged on the inner wall of the lifting mechanism or the inner wall of the turnover mechanism.

[0026] The automobile tailboard device, wherein at least two sets of the transmission device are arranged between the mounting frame and the tailboard.

[0027] Compared with the prior art, the present application has the following advantages:

[0028] The automobile tailboard device in the embodiment of the present application is driven by the driver assembled on the lifting device and the turnover device, so that the driver drives the clutch driving assembly to quickly lift or turn the tailboard, and the driver controls the lifting device and the turnover device to lift and turn. This setting can complete the lifting and turning of the tailboard without other elements, which not only reduces the cost of the driving motor, but also reduces the overall size of the automobile tailboard.

[0029] In addition, the lifting mechanism is used with the lifting arm to improve the overall carrying capacity of the lifting mechanism, and the user can quickly lift the automobile tailboard during use, which improves the installation portability and unloading efficiency, and further improves the overall transmission efficiency of the device. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0031] Figure 1 A front view of the automobile tailboard device provided by the embodiment of the present application;

[0032] Figure 2 A side view of the automobile tailboard device provided by the embodiment of the present application;

[0033] Figure 3 A front view of a transmission device of an automobile tailgate device provided by an embodiment of the present application;

[0034] Figure 4 A schematic diagram of a gear transmission of an automobile tailgate device provided by an embodiment of the present application;

[0035] Figure 5 A schematic diagram of a lifting device of an automobile tailgate device provided by an embodiment of the present application;

[0036] Figure 6 A schematic diagram of a turnover device of an automobile tailgate device provided by an embodiment of the present application;

[0037] Figure 7 A schematic diagram of a driving conversion mechanism in a transmission rod of an automobile tailgate device provided by an embodiment of the present application.

[0038] mounting frame 1, lifting mechanism 2, lifting arm 3, turnover mechanism 4, tailgate 5, first gear 6, driving wheel 7, second gear 8, shaft coupling 9, driving motor 10, first transmission rod 11, second transmission rod 12, driver 20, driving conversion mechanism 30, nut 31, roller 32, lead screw 33, connecting rod 34, clutch 40. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0040] It should be understood that, when used in the specification and the appended claims, the terms “comprise” and “include” indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0041] It should also be understood that the terms used in the present application specification are only for the purpose of describing particular embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, unless otherwise clearly indicated by the context, the singular forms “a”, “an” and “the” are intended to include the plural forms as well.

[0042] It should be further understood that the term “and / or” used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0043] In the embodiments of the present application, please refer to Figure 1 And Figure 5 As shown in the figure, wherein, including the mounting bracket 1, tail plate 5.

[0044] One end of the mounting bracket 1 is fixedly connected with the tail of the vehicle body (not marked in the figure), and the connection between the mounting bracket 1 and the tail plate 5 is provided with a transmission device.

[0045] The transmission device comprises a lifting mechanism 2, a turnover mechanism 4 and a lifting arm 3, the lifting mechanism 2 and the turnover mechanism 4 are both cylindrical structure, and the inside of the cylindrical structure is provided with a clutch driving assembly (not shown in the figure).

[0046] One side of the mounting bracket 1 is equipped with a driver 20, the driver 20 is in transmission connection with the clutch driving assembly in the lifting mechanism 2 or the clutch driving assembly in the turnover mechanism 4, so as to drive the clutch driving assembly in the lifting mechanism 2 and the clutch driving assembly in the turnover mechanism 4 to move respectively through the driver 20.

[0047] The mounting bracket 1 and the tail plate 5 are connected through the lifting arm 3, and the two ends of the lifting mechanism 2 are respectively connected with the mounting bracket 1 and the middle protruding part of the lifting arm 3.

[0048] The lifting arm 3 and the tail plate 5 are connected by bolts.

[0049] The driver drives the clutch driving assembly in the turnover mechanism 4 to make the tail plate 5 turn from the vertical angle to the horizontal angle.

[0050] The driver drives the clutch driving assembly in the lifting mechanism to adjust the height of the end connected with the tail plate 5 of the lifting arm 3, so as to make the tail plate 5 vertically lift.

[0051] Specifically, the tail plate 5 is equipped with two groups of lifting mechanism 2, lifting arm 3 and turnover mechanism 4, and is respectively arranged on the left and right sides of the mounting bracket 1 and the tail plate 5. The tail plate 5 and the turnover mechanism 4 move asynchronously with the lifting mechanism 2, so that only one driver 20 is needed on one side to perform the turnover and lifting operation of the tail plate 5, which reduces the complexity of the structure and further reduces the volume and weight of the tail plate device as a whole. The lifting mechanism 2 and the turnover mechanism 4 are both provided with planetary roller screw mechanism for telescopic movement, which makes the overall structure of the device have greater carrying capacity and longer service life.

[0052] Further, the planetary roller screw mechanism is adopted to convert the rotary motion into linear motion mechanism. Similar to the structure of the roller screw, a plurality of threaded rollers are arranged in the middle to make the bearing capacity stronger, and the repeatability is higher. After being assembled on the tail plate, the electromechanical linear driver with high load capacity can run efficiently. When the user uses it, it can be better disassembled and replaced, and the controllability is better. Only one planetary roller screw mechanism is needed to complete the linear thrust output, and the control performance is better.

[0053] In the embodiment of the present application, please refer to Figure 1 and Figure 2 As shown in the figure, wherein the middle section of the lifting arm 3 protrudes downward to form a protrusion, and the protrusion is rotatably connected to one end of the clutch driving assembly in the lifting mechanism 2 through a bolt structure.

[0054] Specifically, one end of the clutch 40 in the lifting mechanism 2 is rotatably connected to the protrusion through a bolt structure. This fixing method makes the tail plate 5 have stronger lifting capacity and better bearing capacity under the action of the lifting arm 3 with the clutch 40 when the user performs the lifting operation. This setting method not only reduces the structural complexity of the tail plate 5 and the lifting mechanism 2, but also improves the overall bearing capacity of the automobile tail plate and increases the stability of loading and unloading.

[0055] In the embodiment of the present application, please refer to Figure 1 and Figure 3 As shown in the figure, wherein the driver includes a driving motor 10 and a shaft coupling 9 fixedly connected with the driving motor 10, one side of the shaft coupling 9 is provided with a driving wheel 7, and the driving motor 10 drives the driving wheel 7 to rotate through the shaft coupling.

[0056] Specifically, the driving motor drives the driving wheel 7 on the shaft coupling to directional transmission. The driving motor is arranged between the lifting mechanism 2 and the turnover mechanism 4 and is connected with the driving gear 7 through the shaft coupling 9. Since the driving motor 10 and the driving gear 7 have an angle change when the user operates, the shaft coupling 9 is a universal shaft coupling. This setting method makes the driving motor 10 not appear to be stuck in the transmission process, reduces the structural complexity without adding other devices when the user performs the lifting operation, and further improves the lifting performance of the device as a whole.

[0057] In the embodiment of the present application, please refer to Figure 3 and Figure 4 As shown in the figure, wherein the clutch driving assembly in the lifting mechanism 2 includes a first gear 6, a clutch 40, a driving conversion mechanism and a first transmission rod 11.

[0058] The clutch driving assembly in the turnover mechanism comprises a second gear 8, a clutch 40, a driving conversion mechanism 30 and a second transmission rod 12; the first gear 6 and the second gear 8 are both in meshing connection with one side of the driving wheel 7.

[0059] Specifically, the driving motor drives the driving wheel 7 to rotate in a direction, and the driving wheel 7 is in meshing connection with the first gear 6 and the second gear 8 to realize the transmission of the lifting mechanism 3 and the turnover mechanism 4.

[0060] In the embodiment of the present application, please refer to Figure 1 、 Figure 3 and Figure 5 as shown in the figure, wherein the wheel shaft of the first gear 6 is in clutchable connection with the corresponding driving conversion mechanism 30 through the corresponding clutch 40; the first transmission rod is connected with the corresponding driving conversion mechanism, so as to push the first transmission rod to move linearly through the driving conversion mechanism 30.

[0061] The wheel shaft of the second gear 8 is in clutchable connection with the corresponding driving conversion mechanism 30 through the corresponding clutch 40; the second transmission rod 12 is connected with the corresponding driving conversion mechanism 30, so as to push the second transmission rod 12 to move linearly through the driving conversion mechanism 30.

[0062] Specifically, the first gear 6 is in separable engagement with the first transmission rod in the driving conversion mechanism 11, and after the driving conversion mechanism 11 contacts the first gear 6, the gear of the first gear 6 is in meshing connection with the gear teeth arranged at one end of the first transmission rod, so as to convert the rotating force into linear thrust to make the first transmission rod retract and extend to drive the tail plate to quickly lift.

[0063] Further, the driving conversion mechanism 11 is internally provided with a planetary roller screw mechanism, so that the planetary roller screw mechanism cooperates with the first gear 6 and the transmission rod 11 to realize synchronous transmission, and the stable linear extension and retraction can be realized without other components, which improves the transmission efficiency while increasing the overall installation portability.

[0064] In the embodiment of the present application, please refer to Figure 1 、 Figure 3 and Figure 6 as shown in the figure, wherein the clutch 40 in the lifting mechanism 2 comprises a first transmission rod 11 and a driving conversion mechanism 30.

[0065] The first gear 6 is connected with the driving conversion mechanism 30, and the driving conversion mechanism converts the rotating force of the first gear into linear thrust to push the first transmission rod to move linearly, and the first transmission rod is extended and retracted to drive the tail plate to lift.

[0066] Specifically, the second gear 8 is detachably connected with the first transmission rod in the driving conversion mechanism 11, and after the driving conversion mechanism contacts the second gear 8, the gear of the second gear 8 is engaged with the gear teeth arranged at one end of the second transmission rod to convert the rotating force into linear thrust, so that the first transmission rod is extended and retracted to drive the tail plate to lift quickly.

[0067] Further, the interior of the driving conversion mechanism 11 is a planetary roller screw mechanism, so that the planetary roller screw mechanism cooperates with the first gear 6 and the transmission rod to synchronously drive, and the stable extension in the linear direction can be realized without other components, which improves the overall installation portability and transmission efficiency.

[0068] In the embodiment of the present application, please refer to Figure 5 、 Figure 6 and Figure 7 , as shown in the figure, wherein the reversing mechanism 4 includes a second transmission rod 12 and a driving conversion mechanism 30.

[0069] The second gear 8 is connected with the driving conversion mechanism 30, and the driving conversion mechanism 30 converts the rotating force of the second gear 8 into linear thrust to push the second transmission rod 12 to move linearly, and the second transmission rod 12 is extended and retracted to drive the tail plate 5 to reverse.

[0070] Specifically, the driving conversion mechanism uses the connection mode of the planetary roller screw, a plurality of rollers 32 are engaged with the screw 34 through threads to make the inner wall of the nut 31 contact the outer wall of the plurality of rollers to rotate in a direction, so that the first transmission rod 11 and the second transmission rod 12 are extended and retracted in a linear direction. This setting mode of adding the planetary roller screw makes the screw cooperate with the transmission rod to drive more smoothly, thereby further improving the stability of the directional transmission of the transmission rod.

[0071] Further, the nut 31 is a metal cylindrical structure with threads on the inner wall, and the screw is engaged with the plurality of rollers first, and then the plurality of rollers 32 are engaged with the thread structure arranged on the inner wall of the nut 31 to drive, so that the nut rotates in a direction, and the driving conversion mechanism is extended and retracted as a whole, thereby further extending and retracting the transmission rod. This setting mode further improves the transmission efficiency of the transmission rod as a whole.

[0072] In the embodiments of the present application, please refer to Figure 5 and Figure 6 As shown in the figure, wherein the drive conversion mechanism 30 comprises: a lead screw 34, a plurality of rollers 32 and a nut 31 sleeved on the outer wall of the roller 32.

[0073] The outer wall of the lead screw 33 and the inner wall of the nut 31 are provided with threads, and a plurality of rollers 32 are clamped between the gap between the lead screw 33 and the nut 31. The rollers 32 are simultaneously engaged with the nut 31 and the lead screw 33.

[0074] The nut 31 is connected with the first transmission rod 11 or the second transmission rod 12 through the connecting rod 34.

[0075] Specifically, the nut 31 is a cylindrical nut, and the outer wall of the nut 31 is in transmission with a plurality of rollers respectively. A plurality of rollers 32 are arranged around the lead screw 34, so that the lead screw drives the nested nut to rotate directionally while rotating directionally. This arrangement makes the first transmission rod 11 or the second transmission rod 12 more stable when transmitting.

[0076] Specifically, the drive conversion mechanism drives the first transmission rod 11 to extend and retract through the lead screw 34, and the lead screw 34 synchronously extends and retracts along the extension and retraction direction of the first transmission rod 11. The outer wall of the drive conversion mechanism 30 directionally moves along the inner wall of the cavity of the first transmission rod 11. This arrangement makes the first transmission rod 11 or the second transmission rod 12 extend and retract more smoothly and only linearly move in a straight line when transmitting.

[0077] Further, the connecting rod improves the extension and retraction of the first transmission rod 11 and the second transmission rod 12 when the connecting rod is driven by the planetary roller lead screw structure, so that the transmission efficiency of the first transmission rod or the second transmission rod is improved during the extension and retraction of the connecting rod.

[0078] In the embodiments of the present application, please refer to Figure 5 and Figure 6 As shown in the figure, wherein the outer wall of the connecting rod 34 is tightly arranged on the inner wall of the lifting mechanism 2 or the inner wall of the overturning mechanism 4.

[0079] Specifically, the connecting rod 34 is a cylindrical structure, and the transmission connecting rod directionally extends and retracts during transmission. The connecting rod is embedded in the inner wall of the lifting mechanism cylindrical structure. This arrangement does not cause excessive consumption during the extension and retraction of the connecting rod, and does not cause inclined extension and retraction or invalid transmission during the extension and retraction of the connecting rod. The stability of transmission is improved during lifting or overturning, thereby further improving the overall stability of the automobile tailgate device.

[0080] In the embodiments of the present application, please refer to Figure 1 As shown in the figure, wherein, at least two groups of transmission devices are arranged between the mounting frame 1 and the tail plate 5.

[0081] Specifically, at least two groups of drivers 20 are arranged on one side of the mounting frame, and the two groups of drivers 20 are arranged to synchronously drive the tail plate 5, thereby improving the operability of the user to the automobile tail plate. By this arrangement, the automobile tail plate can be quickly lifted or turned over by only two groups of drivers without the need for more elements, thereby improving the loading and unloading performance of the automobile tail plate as a whole. By this arrangement, the assembly volume of the automobile tail plate device is reduced, while ensuring the stable and rapid lifting and turning over operation of the automobile tail plate.

[0082] Further, by arranging multiple transmission devices, the carrying capacity of the tail plate is increased, which is beneficial to the user to quickly lift and turn over the tail plate, thereby improving the working efficiency of the tail plate during loading and unloading.

[0083] The working mode of the automobile tail plate device in the embodiments of the present application is as follows: first state (when starting to work): when the automobile tail plate starts to work, the driving motor starts to work, the clutch arranged in the lifting mechanism is in the disconnected state, the clutch arranged in the turning mechanism is in the connected state, and the driving motor drives the turning mechanism to start to work, so that the tail plate is turned over from the state of being perpendicular to the vehicle compartment to the state of being horizontal. At this time, the turning mechanism stops running.

[0084] Second state (lowering process): the driving motor starts to work, the clutch arranged in the turning device is in the disconnected state, the clutch arranged in the lifting mechanism is in the connected state, and the driving motor drives the lifting mechanism to start to work, so that the tail plate is lowered from the state of being flush with the vehicle compartment to the state of being close to the road surface. At this time, the lifting mechanism stops running, and the tail plate always maintains the horizontal state during this period.

[0085] Third state (rising process): the driving motor starts to work at this time, the clutch arranged in the turning device is in the disconnected state, the clutch arranged in the lifting mechanism is in the connected state, and the driving motor drives the lifting mechanism to start to work, so that the tail plate is raised to the state of being flush with the bottom of the vehicle compartment. During this period, the tail plate always maintains the horizontal state.

[0086] Fourth state (end of work): the driving motor starts to work at this time, the clutch arranged in the lifting mechanism is in the disconnected state, the clutch arranged in the turning device is in the connected state, and the driving motor drives the turning mechanism to work. After the tail plate is turned over from the horizontal state to the vertical state, the tail plate is close to the rear vehicle compartment. At this time, the automobile tail plate device stops running.

[0087] The automobile tail plate device in the embodiment of the present application is driven by the driver assembled on the lifting device and the turnover device, and the further driver drives the tail plate to quickly lift or turn over after cooperating with the clutch. This setting mode can complete the lifting and turning operation of the tail plate without other elements, reduces the cost of the driving motor, reduces the overall volume of the automobile tail plate, and improves the overall installation portability of the device.

[0088] In addition, the lifting mechanism is used in cooperation with the lifting arm to improve the overall carrying performance of the lifting mechanism, and the user can quickly lift the automobile tail plate during use, thereby improving the installation portability and the loading and unloading efficiency.

[0089] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A tailgate apparatus for a vehicle, characterised in that, The mounting frame, the tail plate; One end of the mounting frame is fixedly connected with the tail of the vehicle body, and a transmission device is arranged at the connection between the mounting frame and the tail plate; The transmission device comprises a lifting mechanism, a turnover mechanism and a lifting arm, the lifting mechanism and the turnover mechanism are both cylindrical structures, and the inside of the cylindrical structure is provided with a clutch driving assembly; One side of the mounting frame is equipped with a driver, the driver is in transmission connection with the clutch driving assembly in the lifting mechanism or the clutch driving assembly in the turnover mechanism, so as to drive the clutch driving assembly in the lifting mechanism and the clutch driving assembly in the turnover mechanism to move through the driver respectively; The mounting frame and the tail plate are connected through the lifting arm, and the two ends of the lifting mechanism are connected with the mounting frame and the middle protruding part of the lifting arm respectively; The lifting arm and the tail plate are connected through bolts; The driver drives the clutch driving assembly in the turnover mechanism to make the tail plate turn from a vertical angle to a horizontal angle; The driver drives the clutch driving assembly in the lifting mechanism to adjust the height of the end of the lifting arm connected with the tail plate, so that the tail plate is vertically lifted.

2. A tailgate assembly according to claim 1 wherein, The middle part of the lifting arm protrudes downward to form a protrusion, and one end of the protrusion is rotatably connected with the clutch driving assembly in the lifting mechanism through a bolt structure.

3. A tailgate assembly according to claim 1 wherein, The driver comprises a driving motor and a shaft coupling fixedly connected with the driving motor, one side of the shaft coupling is provided with a driving wheel, and the driving motor drives the driving wheel to rotate through the shaft coupling.

4. A tailgate assembly according to claim 3 wherein, The clutch driving assembly in the lifting mechanism comprises a first gear, a clutch, a driving conversion mechanism and a first transmission rod; The clutch driving assembly in the turnover mechanism comprises a second gear, a clutch, a driving conversion mechanism and a second transmission rod, and the first gear and the second gear are in meshing connection with one side of the driving wheel.

5. A tailgate arrangement according to claim 4, wherein, The shaft of the first gear is in clutchable connection with the corresponding driving conversion mechanism through the corresponding clutch, and the first transmission rod is connected with the corresponding driving conversion mechanism to drive the first transmission rod to move linearly through the driving conversion mechanism; The shaft of the second gear is in clutchable connection with the corresponding driving conversion mechanism through the corresponding clutch, and the second transmission rod is connected with the corresponding driving conversion mechanism to drive the second transmission rod to move linearly through the driving conversion mechanism.

6. A tailgate arrangement according to claim 5, wherein, The clutch in the lifting mechanism comprises a first transmission rod and a driving conversion mechanism; The first gear is connected with the driving conversion mechanism, the rotational force of the first gear is converted into linear thrust through the driving conversion mechanism to drive the first transmission rod to move linearly, and the first transmission rod is extended and retracted to drive the tail plate to lift.

7. A tailgate apparatus as defined in claim 5, wherein The clutch in the turnover mechanism comprises a second transmission rod and a driving conversion mechanism; The second gear is connected with the driving conversion mechanism, the rotational force of the second gear is converted into linear thrust through the driving conversion mechanism to drive the second transmission rod to move linearly, and the second transmission rod is extended and retracted to drive the tail plate to turn over.

8. A tailgate arrangement according to claim 6 or 7, wherein, The driving conversion mechanism comprises a lead screw, a plurality of rollers and a nut sleeved on the outer wall of the rollers; The outer wall of the lead screw and the inner wall of the nut are provided with threads, a plurality of rollers are clamped between the gap between the lead screw and the nut, and the rollers are simultaneously engaged with the nut and the lead screw. The nut is connected with the first transmission rod or the second transmission rod through a connecting rod.

9. A tailgate arrangement according to claim 8, wherein, The outer wall of the connecting rod is arranged in close contact with the inner wall of the lifting mechanism or the inner wall of the turnover mechanism.

10. The tailgate apparatus of claim 1, wherein, At least two groups of the transmission devices are arranged between the mounting frame and the tail plate.

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