Turnover device of vehicle-mounted display screen and vehicle-mounted display screen structure

Abstract

The embodiment of the invention relates to a turnover device of a vehicle-mounted display screen and a vehicle-mounted display screen structure, and belongs to the technical field of turnover devices. The turnover device comprises a motor assembly, a damper assembly and a display screen fixing assembly. The motor assembly comprises a self-locking output rotating shaft; a first limiting part is arranged on the output rotating shaft; the damper assembly comprises a first support, an elastic piece and a damping block which are sequentially arranged on the output rotating shaft in a sleeving mode. The first support abuts against the first limiting part and is rotatably arranged on the output rotating shaft in a sleeving mode. The damping block is fixed on the output rotating shaft; the two ends of the elastic piece abut against the first support and the damping block respectively and are in a compressed state. The display screen fixing assembly is arranged on the first support and used for connecting and fixing a display screen. According to the turnover device of the vehicle-mounted display screen, the display screen can be turned over in an electric turnover mode and a manual turnover mode, and operation and use are convenient.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of flipping devices, and in particular to a flipping device for a vehicle-mounted display screen. Background Art

[0002] Existing in-vehicle display screens, such as in-vehicle ceiling TVs, can only be flipped in one of the flipping modes: electric flipping and manual flipping. In an electric flipping in-vehicle TV, if the viewing angle of the in-vehicle TV is poor after electric flipping, it is difficult to fine-tune the angle manually. Summary of the invention

[0003] Based on this, an object of an embodiment of the present invention is to provide a flipping device for a vehicle-mounted display screen, which supports both electric flipping of the display screen and manual flipping of the display screen, and is convenient for adjusting the flipping angle of the display screen.

[0004] In the first aspect, an embodiment of the present invention provides a flipping device for a vehicle-mounted display screen, comprising a motor assembly, a damper assembly, and a display screen fixing assembly; the motor assembly comprises a self-locking output shaft; a first limiting portion is provided on the output shaft; the damper assembly comprises a first bracket, an elastic member, and a damping block which are sequentially mounted on the output shaft; the first bracket abuts against the first limiting portion and is rotatably mounted on the output shaft; the damping block is fixed on the output shaft; the two ends of the elastic member abut against the first bracket and the damping block respectively and are in a compressed state; the display screen fixing assembly is arranged on the first bracket for connecting and fixing the display screen.

[0005] In the flipping device of the vehicle-mounted display screen described in the embodiment of the present invention, the output shaft and the display screen fixing assembly are connected by the damper assembly. Due to the elastic force of the elastic member itself, the two ends of the elastic member are respectively pressed against the damping block and the first bracket, and the first bracket is pressed against the first limit portion on the output shaft, so that an extrusion force is generated between the damping block, the elastic member, and the first bracket, and the first bracket and the first limit portion of the output shaft are in a fastened state. When the display screen is electrically flipped, the output shaft is rotated by the motor assembly, and the damping block rotates with the output shaft. At the same time, due to the action of the elastic member, the first bracket is pressed against the first limit portion of the output shaft, so that when the output shaft rotates, a static friction force is generated between the first bracket and the first limit portion of the output shaft, and the direction of the static friction force received by the first bracket is the same as the rotation direction of the output shaft, thereby driving the first bracket and the display screen fixing assembly arranged on the first bracket to rotate synchronously with the output shaft, thereby realizing the flipping of the display screen. When the viewing angle of the display screen is poor after electric flipping and needs to be fine-tuned, or when the motor fails / stops working, the self-locking output shaft is in a locked state and the output shaft cannot rotate. At this time, the flipping device of the vehicle-mounted display screen in the embodiment of the present invention can achieve manual flipping: when a rotational force is applied to the display screen or the display screen fixing assembly for manual flipping, the rotational force transmitted to the first bracket is greater than the maximum static friction between the first bracket and the first limit portion of the output shaft. At this time, the first bracket and the output shaft are in a slipping state relative to each other, and the first bracket can rotate relative to the output shaft to achieve manual flipping of the display screen. The flipping device of the vehicle-mounted display screen in the embodiment of the present invention supports both electric flipping of the display screen and manual flipping of the display screen, which is easy to operate and use.

[0006] Furthermore, the damper assembly also includes a second bracket; the second bracket is rotatably mounted on the output shaft and fixedly connected to a side of the first bracket away from the elastic member. The second bracket can rotate along with the first bracket during electric or manual flipping; through the provision of the second bracket, the display screen fixing assembly on the first bracket can perform flipping more stably after connecting and fixing the display screen, thereby improving the mechanical properties of the flipping device of the entire vehicle-mounted display screen.

[0007] Furthermore, the output shaft is also provided with a second limiting portion, and the second bracket abuts against the second limiting portion. The first limiting portion and the second limiting portion on the output shaft facilitate the installation of the first bracket and the second bracket; at the same time, under the elastic force generated by the elastic member in a compressed state, the first bracket abuts against the first limiting portion, and the second bracket abuts against the second limiting portion, so that the second bracket is stably connected to the first bracket, indirectly improving the stability between the first bracket and the output shaft, and facilitating the stable flipping of the display screen.

[0008] As a specific implementation, the first bracket and the second bracket are fixedly connected to form a U-shaped structure; the first bracket includes a first bracket plate, and the first bracket plate abuts against the first limiting portion; the second bracket includes a second bracket plate and a third bracket plate; the two ends of the second bracket plate are fixedly connected to the first bracket plate and the third bracket plate respectively; the third bracket plate is rotatably mounted on the output shaft, and the third bracket plate abuts against the second limiting portion; the display screen fixing assembly is fixedly connected to an end of the first bracket plate that is relatively far from the second bracket plate. The first bracket and the second bracket form a U-shaped structure, which is convenient for installation on the output shaft, and can also be convenient for connecting the display screen fixing assembly, thereby improving the overall structural mechanical properties of the flip device of the vehicle-mounted display screen.

[0009] As a specific implementation, the motor assembly includes a motor and a worm helical gear structure, and the worm helical gear structure includes the output shaft. The worm helical gear structure (also known as a worm gear structure) has a self-locking function, and the output shaft of the worm helical gear structure can only be driven by the motor to rotate, and the output shaft cannot reversely drive the entire worm helical gear structure or the motor; if the worm helical gear structure is stationary, it is in a self-locking state, and the output shaft cannot rotate.

[0010] Furthermore, the flipping device of the vehicle-mounted display screen of the embodiment of the present invention also includes a control mechanism and a rotation angle detection mechanism, the control mechanism is used to control the rotation of the output shaft; the rotation angle detection mechanism is used to detect the rotation angle of the output shaft, when the rotation angle of the output shaft reaches a preset value, the control mechanism controls the output shaft to stop rotating.

[0011] Furthermore, the damping block is provided with an internal thread, and the output shaft is provided with a thread that cooperates with the damping block. Through the threaded connection between the damping block and the output shaft, the damping block can be relatively screwed in or out to change the distance between the nut and the first bracket, and adjust the damping size formed between the nut, the elastic member, and the first bracket. In this way, the tightness of the first bracket when it abuts against the first limit portion of the output shaft can be adjusted, so that the output shaft can drive the first bracket to rotate without affecting the electric flip, and a small force can be applied to make the first bracket rotate around the output shaft during manual flipping.

[0012] Furthermore, the elastic member is a spring washer or a spring. The spring or the spring washer is provided to facilitate contact with the first bracket and the damping block respectively.

[0013] In a second aspect, an embodiment of the present invention further provides a vehicle-mounted display screen structure, comprising any of the above-mentioned vehicle-mounted display screen flipping devices. The vehicle-mounted display screen structure of the present invention adopts the vehicle-mounted display screen flipping device, which integrates manual flipping and electric flipping, making it convenient to flip the display screen when in use.

[0014] Furthermore, the flipping device of the vehicle-mounted display screen is provided with two, and the display screen fixing components of the two flipping devices of the vehicle-mounted display screen are respectively connected and fixed to the two ends of one side of the display screen. By providing two flipping devices, both can work at the same time, or one of them can work. When one of them fails to work, the other can be used to work, which is convenient for manual flipping and electric flipping of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of an implementation of a flip device for a vehicle-mounted display screen according to an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of a structure in which a display screen fixing assembly is flipped 90°;

[0017] Figure 3 for Figure 1 Schematic diagram of structural explosion;

[0018] Figure 4 for Figure 2 Schematic diagram of structural explosion;

[0019] Figure 5 A schematic structural diagram of an implementation of a vehicle display screen structure according to an embodiment of the present invention;

[0020] Figure 6 for Figure 5 Schematic diagram of the structure in which the display screen is flipped 90°. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0022] In addition, the terms first, second, third, etc. in the specification and claims are only used for the purpose of describing the same technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, nor necessarily describing the order or time sequence. The terms are interchangeable where appropriate. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0023] Similarly, the term "connection" is also used in the specification and claims, which should not be interpreted as limited to direct connection. Therefore, the expression "device A is connected to device B" should not be limited to the device A being directly connected to device B in the device or system, which means that there is a path between device A and device B, which may be a path including other devices or tools.

[0024] Example 1

[0025] A flip device for a vehicle display screen, see Figure 1-4 , including a motor assembly 10, a damper assembly 20, and a display screen fixing assembly 30.

[0026] The motor assembly 10 includes a housing 11, a motor (not shown) and a worm helical gear structure 12; the motor and the worm helical gear structure 12 are installed in the housing 11, and the worm helical gear structure 12 includes an output shaft 121, one end of which extends out of the housing 11. In this embodiment, the housing 11, the motor, and the worm helical gear structure 12 can all adopt conventional existing technologies in the field. The worm helical gear structure 12 is also called a worm gear structure. A five-stage gear transmission structure in the prior art can also be provided in the housing 11 to drive the rotation of the output shaft 121, which will not be repeated here. The worm helical gear structure 12 has a locking function, and the output shaft 121 of the worm helical gear structure 12 can only be driven by the motor to rotate, and the output shaft 121 cannot reversely drive the entire worm helical gear structure 12 and the motor; if the worm helical gear structure 12 is stationary, it is in a self-locking state, and the output shaft 111 cannot rotate. In other embodiments, the worm helical gear structure may also be replaced by other conventional technologies in the art, as long as the output shaft 121 can achieve a self-locking function, and the housing 11 may also be provided with or not provided according to actual conditions.

[0027] In the embodiment of the present invention, the output shaft 121 is provided with a first stopper 1210. Specifically, in the embodiment of the present invention, the output shaft 121 includes a first shaft 1211 and a second shaft 1212 that are coaxially connected. The outer diameter of the first shaft 121 is smaller than the outer diameter of the second shaft 1212. The connection between the first shaft 1211 and the second shaft 1212 forms a stepped structure. The first stopper 1210 is the end face of the second shaft 1212. In the embodiment of the present invention, the damper assembly 20 includes a first bracket 21, an elastic member 22, and a damping block 23 that are sequentially sleeved on the first shaft 1211 of the output shaft 121. Among them, the first bracket 21 is in contact with the first limiting portion 1210 and is rotatably mounted on the first rotating shaft 1211 of the output rotating shaft 121; the damping block 23 is fixed on the first rotating shaft 1211 of the output rotating shaft 121; the two ends of the elastic member 22 are respectively in contact with the first bracket 21 and the damping block 23 and are in a compressed state; the display screen fixing component 30 is arranged on the first bracket 21 for connecting and fixing the display screen.

[0028] In the flipping device of the vehicle display screen of the embodiment of the present invention, the output shaft 121 and the display screen fixing assembly 30 are connected by the damper assembly 20. Due to the elastic force of the elastic member 22 itself, its two ends are respectively squeezed and abutted against the damping block 23 and the first bracket 21, and at the same time, the first bracket 21 abuts against the first limiting portion 1210 on the output shaft 121, so that an extrusion force is generated between the damping block 23, the elastic member 22, and the first bracket 21, and the first bracket 21 and the first limiting portion 1210 of the output shaft 121 are in a fastened state. When the display screen is electrically flipped, the output shaft 121 is rotated by the motor assembly 10, and the damping block 23 rotates together with the output shaft 121. At the same time, due to the action of the elastic member 22, the first bracket 21 abuts against the first limit portion 1210 of the output shaft 121, so that when the output shaft 121 rotates, a static friction force is generated between the first bracket 21 and the first limit portion 1210 of the output shaft 121, and the direction of the static friction force on the first bracket 21 is the same as the rotation direction of the output shaft 121, thereby driving the first bracket 21 and the display screen fixing assembly 30 arranged on the first bracket 21 to rotate synchronously with the output shaft 121, thereby realizing the flipping of the display screen. When the viewing angle of the display screen is poor after electric flipping and the angle needs to be fine-tuned, or when the motor fails / stops working, the self-locking output shaft 121 is in a locked state and the output shaft cannot rotate. At this time, the flipping device of the vehicle-mounted display screen of the embodiment of the present invention can realize manual flipping: when a turning force is applied to the display screen or the display screen fixing component 30 for manual flipping, the turning force transmitted to the first bracket 21 is greater than the maximum static friction between the first bracket 21 and the first limit portion 1210 of the output shaft 121. At this time, the first bracket 21 and the output shaft 121 are in a relatively slipping state, and the first bracket 21 can rotate relative to the output shaft 121 to realize manual flipping of the display screen. When the manual flipping stops, the friction between the first bracket 21 and the output shaft 121 is used to balance the gravity of the vehicle-mounted display screen, so that the display screen is fixed in the position after the manual flipping stops. The flipping device of the vehicle-mounted display screen of the embodiment of the present invention supports both electric flipping of the display screen and manual flipping of the display screen, which is easy to operate and use.

[0029] As an improvement of the above solution, the damper assembly 20 may further include a second bracket 24; the second bracket 24 is rotatably mounted on the second rotating shaft 1212 of the output rotating shaft 121, and is fixedly connected to the side of the first bracket 21 away from the elastic member 22. The second bracket 21 can rotate along with the first bracket 21 during electric flipping or manual flipping; through the arrangement of the second bracket 24, the display screen fixing assembly 30 on the first bracket 21 can be flipped more stably after being connected to fix the display screen, thereby improving the mechanical properties of the entire flipping device 100 for the vehicle-mounted display screen. As a preferred implementation manner of the embodiment of the present invention, the output shaft 121 is also provided with a second limiting portion 1220. Specifically, the output shaft 121 also includes a third shaft 1213. The first shaft 1211, the second shaft 1212, and the third shaft 1213 are coaxially connected in sequence. The outer diameter of the second shaft 1212 is smaller than the outer diameter of the third shaft 1213. The connection between the second shaft 1212 and the third shaft 1213 forms a stepped structure, and the second limiting portion 1220 is the end face of the third shaft 1213. The first limiting portion 1210 and the second limiting portion 1220 on the output shaft 121 facilitate installation of the first bracket 21 and the second bracket 24; at the same time, under the elastic force generated by the elastic member 22 in a compressed state, the first bracket 21 abuts against the first limiting portion 1210, and the second bracket 24 abuts against the second limiting portion 1220, so that the second bracket 24 is stably connected to the first bracket 24, indirectly improving the stability between the first bracket 21 and the output shaft 121, and facilitating stable flipping of the display screen.

[0030] As a preferred embodiment, the first bracket 21 and the second bracket 24 are fixedly connected to form a U-shaped structure; the first bracket 21 includes a first bracket plate 211, the first bracket plate 211 is provided with a circular hole that matches the outer side wall of the first rotating shaft 121 of the output rotating shaft 121, and the first bracket plate 211 is rotatably mounted on the first rotating shaft 1211 of the output rotating shaft 121; the second bracket 24 includes a second bracket plate 241 and a third bracket plate 242; the second bracket plate 241 is parallel to the output rotating shaft 121, and the two ends of the second bracket plate 241 are fixedly connected to the first bracket plate 211 and the third bracket plate 242 respectively, the third bracket plate 242 is provided with a circular hole that matches the outer side wall of the second rotating shaft 122 of the output rotating shaft 121, and the third bracket plate 242 is rotatably mounted on the second rotating shaft 1212 of the output rotating shaft 121; the display screen fixing assembly 30 is fixedly connected to one end of the first bracket plate 211 away from the second bracket plate 241. In the U-shaped structure formed by the fixed connection between the first bracket 21 and the second bracket 24, the inner side of the first bracket plate 211 abuts against the first limit portion 1210, and the outer side of the third bracket plate 242 abuts against the second limit portion 1220. Preferably, the second bracket plate 241 and the third bracket plate 242 on the second bracket 24 are an integral connection structure, and one end of the first bracket plate 211 and the second bracket plate 241 are detachably fixedly connected, specifically, the first bracket plate 211 and the second bracket plate 241 are fixedly connected by bolts. Such a configuration facilitates the installation of the first bracket 21 and the second bracket 24 on the output shaft 121, and can also facilitate the connection of the display screen fixing assembly 30, thereby improving the overall structural mechanical properties of the flip device of the vehicle-mounted display screen.

[0031] As a preferred implementation of this embodiment, the damping block 23 is provided with an internal thread. Specifically, the damping block 23 can be a nut. The third shaft 1213 of the output shaft 121 is provided with a thread 1230 that cooperates with the damping block 23. By relatively screwing in or out the damping block 23, the distance between the damping block 23 and the first bracket 21 is changed, and the damping size formed between the damping block 23, the elastic member 22, and the first bracket 21 is adjusted. When the distance between the damping block 23 and the first bracket 21 is adjusted (i.e., the degree of screwing in of the damping block 23 relative to the output shaft 121 is adjusted), the elastic member 22 is in different compression states, and the tightness between the output shaft 121 and the first limiting portion 1210 of the first bracket 21 when they are in contact can be adjusted to ensure that the size of the force required to be applied during manual flipping is reduced without affecting the electric flipping.

[0032] As a preferred implementation of this embodiment, the elastic member 22 is a spring washer or a spring. Preferably, the elastic member is a spring washer, and in a specific embodiment, two spring washers may be provided.

[0033] As a preferred implementation mode of this embodiment, in order to prevent damage to adjacent structures during abutment, a first flat gasket 25 is arranged between the elastic member 22 and the first bracket 21, a second flat gasket 26 is arranged between the elastic member 22 and the damping block 23, and a third flat gasket 27 is arranged between the first bracket 21 and the first limiting portion 1211.

[0034] As an implementation of an embodiment of the present invention, the display screen fixing assembly 30 includes a display screen fixing frame 31, one end of the display screen fixing frame 31 is vertically fixedly connected to one end of the first bracket plate 211 away from the second bracket plate 241, and the other end extends in a direction away from the third bracket plate 242. Preferably, the display screen fixing frame 31 is integrally formed with the first bracket plate 211. The display screen is connected to the flip device of the vehicle-mounted display screen through the display screen fixing frame 31, and the display screen fixing frame 31 can adopt existing technology, which will not be repeated here.

[0035] As an implementation of an embodiment of the present invention, the flip device of the vehicle display screen of the embodiment of the present invention further includes a control mechanism 40 and a rotation angle detection mechanism 50. Specifically, the control mechanism 40 may include a PCB (printed circuit board) 41, and the rotation angle detection mechanism 50 includes a magnet 51 and a magnetic encoding sensor 52; the magnet 51 is a magnet, and the magnet 51 is fixedly connected to the outer side of the third bracket plate 242, and can rotate with the third bracket plate 243, and the magnet 51 has a magnetic field, and the magnetic encoding sensor 52 is arranged on the box 11, and the magnetic encoding sensor 52 can identify the rotation angle of the magnet 51, and the magnetic encoding sensor 52 outputs a signal to the control mechanism 40 after sensing the rotation angle. During electric flipping, the control mechanism 40 controls the output shaft 121 to rotate to a certain angle, so that the display screen fixing assembly 30 drives the display screen to flip to a viewing angle that the user can have. At this time, since the magnet 51 can rotate with the third bracket plate 242, the magnetic encoding sensor senses and identifies the rotation angle of the magnet 51, and then outputs a signal to the control mechanism 40. If the required rotation angle is reached, the output shaft 121 is controlled to stop rotating.

[0036] Example 2

[0037] The embodiment of the present invention also provides a vehicle-mounted display screen structure, see Figure 5-6, including the above-mentioned flipping device 100 for the vehicle display screen. As a preferred embodiment, two flipping devices 100 for the vehicle display screen are provided, and the two flipping devices for the vehicle display screen are respectively provided on the vehicle display screen body 300, and the display screen fixing components 30 of the two flipping devices 100 for the vehicle display screen are respectively connected and fixed to the two ends of one side of the display screen 200. By providing two flipping devices 100, both can work at the same time, or one of them can be used to work. When one of them fails to work, the other can be used to work. In other embodiments, only one flipping device 100 for the vehicle display screen can also be provided.

[0038] When the display screen is electrically flipped, the output shaft 121 is rotated by the motor and the worm helical gear structure 12 of the above-mentioned vehicle-mounted display screen flipping device 100, driving the first bracket 21 and the display screen fixing assembly 30 disposed on the first bracket 21 to rotate, thereby realizing the flipping of the display screen. In addition, manual flipping can also be realized. When a rotational force is applied to the display screen or the display screen fixing assembly for manual flipping, the rotational force transmitted to the first bracket 21 is greater than the maximum static friction force between the first bracket 21 and the first limiting portion 1210 of the output shaft 121, so that the first bracket 21 and the output shaft 121 are in a relatively slipping state, and the first bracket 21 can rotate relatively around the output shaft 121, thereby realizing manual flipping of the display screen.

[0039] The flipping device of the vehicle display screen of the embodiment of the present invention supports both electric flipping of the display screen and manual flipping of the display screen. Compared with the prior art, the flipping device of the vehicle display screen of the embodiment of the present invention can flip the display screen by electric flipping and manual flipping, which is easy to operate and use.

[0040] The above-mentioned embodiments only express several implementation methods of the embodiments of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the embodiments of the present invention, and the embodiments of the present invention are also intended to include these modifications and modifications.

Claims

1. A flipping device for a vehicle-mounted display screen, characterized in that: Including motor assembly, damper assembly, display screen fixing assembly; The motor assembly comprises a self-locking output shaft; the output shaft is provided with a first limiting portion; The damper assembly comprises a first bracket, an elastic member, and a damping block which are sequentially sleeved on the output shaft; the first bracket abuts against the first limiting portion and is rotatably sleeved on the output shaft; the damping block is fixed on the output shaft; two ends of the elastic member abut against the first bracket and the damping block respectively and are in a compressed state; The display screen fixing assembly is arranged on the first bracket and is used for connecting and fixing the display screen.

2. The flipping device for a vehicle-mounted display screen according to claim 1, characterized in that: The damper assembly further comprises a second bracket; the second bracket is rotatably sleeved on the output shaft and fixed to a side of the first bracket away from the elastic member.

3. The flipping device of the vehicle-mounted display screen according to claim 2 is characterized in that: The output shaft is further provided with a second limiting portion, and the second bracket abuts against the second limiting portion.

4. The flipping device for a vehicle-mounted display screen according to claim 3, characterized in that: The first bracket is fixedly connected to the second bracket to form a U-shaped structure; the first bracket includes a first bracket plate, the first bracket plate is rotatably mounted on the output shaft, and the first bracket plate abuts against the first limiting portion; the second bracket includes a second bracket plate and a third bracket plate, both ends of the second bracket plate are fixedly connected to the first bracket plate and the third bracket plate respectively, the third bracket plate is rotatably mounted on the output shaft, and the third bracket plate abuts against the second limiting portion; the display screen fixing assembly is fixedly connected to an end of the first bracket plate away from the second bracket plate.

5. The flipping device for a vehicle-mounted display screen according to claim 1, characterized in that: The motor assembly includes a motor and a worm helical gear structure, and the worm helical gear structure includes the output shaft.

6. The flipping device for a vehicle-mounted display screen according to claim 5, characterized in that: It also includes a control mechanism and a rotation angle detection mechanism, wherein the control mechanism is used to control the rotation of the output shaft; the rotation angle detection mechanism is used to detect the rotation angle of the output shaft, and when the rotation angle of the output shaft reaches a preset value, the control mechanism controls the output shaft to stop rotating.

7. The flipping device for a vehicle-mounted display screen according to claim 1, characterized in that: The damping block is provided with an internal thread, and the output shaft is provided with a thread that cooperates with the damping block.

8. The flipping device for a vehicle-mounted display screen according to claim 1, characterized in that: The elastic member is a spring washer or a spring.

9. A vehicle-mounted display screen structure, characterized in that: A flipping device for a vehicle-mounted display screen comprising any one of claims 1-8.

10. The vehicle-mounted display screen structure according to claim 9, characterized in that: Two flipping devices of the vehicle-mounted display screen are provided, and the display screen fixing components of the two flipping devices of the vehicle-mounted display screen are respectively connected and fixed to two ends of one side of the display screen.

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