A vehicle-mounted ceiling display screen rotator

Abstract

This invention discloses a vehicle-mounted ceiling-mounted display screen rotator. The structure of this invention is reasonably designed. By providing a transmission component, a rear hinge shaft component, and a front hinge shaft component on the mounting plate, the third hinge fixing block of the front hinge shaft assembly and the second hinge fixing block of the rear hinge shaft assembly can be used to install and fix the display screen component downwards to the back of the display screen component. This has the following advantages: (1) When closed, the display area of ​​the display screen faces downwards. When unfolded, the display screen can rotate a small angle to face the rear users, achieving the desired angle effect; (2) It does not affect the thickness of the screen, making the display screen thinner and more aesthetically pleasing; (3) It forms a triangular support, which is more stable and can support a larger size and weight of the display screen; (4) The display screen component has two degrees of freedom of movement, that is, it can move horizontally and downwards at the same time, and the movement process occupies less space in the vehicle.

Description

Technical Field

[0001] This invention relates to the field of display screen rotators, and more particularly to a vehicle-mounted ceiling-mounted display screen rotator. Background Technology

[0002] Driven by the trend of intelligent in-vehicle products, rear ceiling-mounted screens are becoming increasingly popular in models such as the Li Auto L9 and GAC vehicles. These screens not only highlight the intelligent image of the car but also offer high practicality, serving as an important component of in-car entertainment and possessing great development potential.

[0003] Ceiling-mounted screens are generally installed in the rear seats. In order to save interior space and to allow them to be flipped out from under the roof when needed, a flipping mechanism is required. Currently, the rotators used on the market mainly design the flipping mechanism at both ends of the display screen.

[0004] The above-mentioned rotators on the market have the following main drawbacks:

[0005] 1) The flip mechanism design at both ends of the display increases the horizontal volume of the display and occupies space of the display;

[0006] 2) It will increase the thickness of the display screen, making it impossible to make the display screen aesthetically pleasing and thin. Summary of the Invention

[0007] The purpose of this invention is to provide a vehicle-mounted ceiling display screen rotator to solve the technical problem that existing rotators on the market mainly design the flipping mechanism at both ends of the display screen.

[0008] To achieve the above objectives, the present invention provides a vehicle-mounted ceiling-mounted display screen rotator, including a mounting plate. The mounting plate is provided with a transmission assembly, a rear hinge shaft assembly, and a front hinge shaft assembly. The rear hinge shaft assembly includes a first hinge fixing block, a second hinge fixing block, a second hinge shaft, a first hinge shaft, and a connecting rod. The first hinge fixing block is fixed to the mounting plate. The end of the first hinge fixing block away from the front hinge shaft assembly is rotatably connected to the connecting rod via the first hinge shaft. The end of the connecting rod near the front hinge shaft assembly is connected to the second hinge fixing block. The front hinge assembly is rotatably connected via the second hinge shaft; the front hinge shaft assembly includes a third hinge fixing block, a fourth hinge fixing block, and a third hinge shaft. The fourth hinge fixing block is fixed to the transmission assembly, and the transmission assembly can drive the fourth hinge fixing block to reciprocate toward the rear hinge shaft assembly. The fourth hinge fixing block and the third hinge fixing block are rotatably connected via the third hinge shaft. The third hinge fixing block and the second hinge fixing block can be used to fix the display screen assembly downwards. When the fourth hinge fixing block reciprocates toward the rear hinge shaft assembly, it can drive the display screen assembly to rotate.

[0009] Furthermore, the transmission assembly includes a base plate and a driving device. The base plate is fixed to the mounting plate. The front and rear ends of the base plate are respectively provided with a first fixing block and a second fixing block that move vertically upwards. A slider is provided between the first fixing block and the second fixing block. Two guide rods extending in the front and rear are connected between the first fixing block and the second fixing block. The slider is provided with two guide holes that slide and cooperate with the two guide rods respectively. The slider can reciprocate along the two guide rods under the drive of the driving device. The fourth hinge fixing block is fixed on the slider.

[0010] Furthermore, a lead screw extending along the front and rear is connected between the first fixed block and the second fixed block. The front and rear ends of the lead screw are respectively rotatably engaged with the first fixed block and the second fixed block. The slider is also provided with a nut that is threadedly connected to the lead screw. The driving device includes a motor, which is connected to one end of the lead screw. The motor can drive the lead screw to rotate, thereby driving the slider to reciprocate along the two guide rods.

[0011] Furthermore, a third fixing block is provided behind the second fixing block and fixed to the base plate, the motor is fixed to the third fixing block, and the rear end of the lead screw is connected to the motor.

[0012] Furthermore, the first fixing block and the second fixing block are respectively provided with bearings that rotate with the front and rear ends of the lead screw, the two guide rods are distributed left and right, and the lead screw is disposed between the two guide rods.

[0013] Furthermore, the first hinge shaft is provided with a first mounting groove and a first rotating groove distributed along the left and right sides, the first hinge fixing block is fixedly connected to the first mounting groove, and the end of the connecting rod away from the front hinge shaft assembly is rotatably connected to the first rotating groove; the second hinge shaft is provided with a second mounting groove and a second rotating groove distributed along the left and right sides, the second hinge fixing block is fixedly connected to the second mounting groove, and the end of the connecting rod near the front hinge shaft assembly is rotatably connected to the second rotating groove.

[0014] Furthermore, the connecting rod can be an upwardly arched arc shape, with the end of the connecting rod near the first hinge fixing block pointing vertically downwards, and the end of the connecting rod near the second hinge fixing block tilting forward and downwards.

[0015] Furthermore, the third hinge shaft is provided with a third mounting groove and a third rotating groove distributed along the left and right sides. The fourth hinge fixing block is fixedly connected to the third mounting groove, and the third hinge fixing block is rotatably connected to the third rotating groove.

[0016] Furthermore, the transmission assembly, the rear hinge shaft assembly, and the front hinge shaft assembly are disposed on the top surface of the mounting plate. The rear hinge shaft assembly and the front hinge shaft assembly are provided with movable openings on the mounting plate below them. The connecting rod, the second hinge fixing block, and the third hinge fixing block can pass downward through the movable openings.

[0017] Furthermore, the number of the rear hinge shaft assembly and the front hinge shaft assembly are both set to two. The two rear hinge shaft assemblies are symmetrically arranged on the left and right sides of the rear end of the transmission assembly, and the two front hinge shaft assemblies are symmetrically arranged on the left and right sides of the front end of the transmission assembly.

[0018] In summary, the technical solution of the present invention has the following beneficial effects: The structure of the present invention is reasonable. By providing a transmission assembly, a rear hinge shaft assembly, and a front hinge shaft assembly on the mounting plate, the third hinge fixing block of the front hinge shaft assembly and the second hinge fixing block of the rear hinge shaft assembly can be used to install and fix them downward to the back of the display screen assembly, thereby having the following advantages: (1) When closed, the display area of ​​the display screen faces downward. When unfolded, the display screen can rotate a small angle to face the rear row of users, achieving the desired angle effect; (2) Since the second hinge shaft can be located on the screen The back, rather than the two ends of the display screen, does not affect the thickness of the screen, making the display screen thinner and more beautiful; (3) The ceiling screen can be supported by the connecting rod. After unfolding, the first hinge shaft, the second hinge shaft and the third hinge shaft form a triangular support, which is more stable and can bear a larger size and weight of the display screen; (4) Driven by the transmission component, the fourth hinge fixing block can drive the display screen component to rotate when the rear hinge shaft component moves back and forth, so that the display screen component has two degrees of freedom of movement, that is, it can move horizontally and downward at the same time, and the movement process occupies less space in the vehicle. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a top view of the structure of the present invention;

[0021] Figure 3 This is a side view of the structure of the present invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the present invention when closed;

[0023] Figure 5 This is a three-dimensional structural diagram of the present invention when unfolded;

[0024] Figure 6 This is an exploded structural diagram of the present invention;

[0025] Figure 7 This is a schematic diagram of a partial explosion structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the present invention when closed;

[0027] Figure 9 This is a schematic diagram of the structure of the present invention when unfolded;

[0028] Figure 10 This is an exploded view of the rear hinge shaft assembly of the present invention;

[0029] Figure 11 This is an exploded view of the front hinge shaft assembly of the present invention;

[0030] Explanation of reference numerals in the attached drawings: 1-Transmission assembly, 11-Base plate, 12-First fixing block, 13-Second fixing block, 14-Third fixing block, 15-Slider, 151-Guide hole, 152-Nut, 153-Fifth screw hole, 16-Guide rod, 17-Lead screw, 18-Motor, 19-Bearing, 2-Rear hinge shaft assembly, 21-First hinge fixing block, 211-First screw hole, 22-Second hinge fixing block, 221-Second screw hole, 23-Second hinge shaft, 231-Second mounting slot, 232-Second rotating slot, 24-First hinge 241-First mounting slot, 242-First rotating slot, 25-Connecting rod, 3-Front hinge pivot assembly, 31-Third hinge fixing block, 311-Third screw hole, 32-Fourth hinge fixing block, 321-Fourth screw hole, 33-Third hinge pivot, 331-Third rotating slot, 332-Third mounting slot, 4-Mounting plate, 41-First screw post, 42-Second screw post, 43-Third screw post, 44-Movable opening, 5-Display assembly, 51-Fourth screw post, 52-Fifth screw post, 53-Screw front, 54-Allowing slot. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, but this does not constitute a limitation on the scope of protection of the present invention.

[0032] In this invention, for clarity, the following description is provided: The observer faces the attached... Figure 1In this observation, the lower left side of the observer is designated as the front, the upper right side as the rear, the upper left side as the right, the lower right side as the left, the top of the observer as the top, and the bottom of the observer as the bottom. It should be noted that the terms "front end," "rear end," "left side," "right side," "middle," "above," and "below" used in this document indicate orientations or positional relationships based on the accompanying drawings. These are merely for the purpose of clearly describing the invention and do not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," "third," and "fourth" are used only for the purpose of clarity or simplification of description and should not be construed as indicating or implying relative importance or quantity.

[0033] See Figures 1 to 11This embodiment provides a vehicle-mounted ceiling-mounted display screen rotator, including a mounting plate 4. The mounting plate 4 is equipped with a transmission assembly 1, a rear hinge shaft assembly 2, and a front hinge shaft assembly 3. The rear hinge shaft assembly 2 includes a first hinge fixing block 21, a second hinge fixing block 22, a second hinge shaft 23, a first hinge shaft 24, and a connecting rod 25. The first hinge fixing block 21 is fixed to the mounting plate 4. The end of the first hinge fixing block 21 away from the front hinge shaft assembly 3 is rotatably connected to the connecting rod 25 via the first hinge shaft 24. The end of the connecting rod 25 near the front hinge shaft assembly 3 is connected to the second hinge fixing block 22 via the second hinge shaft 24. The hinge shaft 23 is rotatably connected; the front hinge shaft assembly 3 includes a third hinge fixing block 31, a fourth hinge fixing block 32, and a third hinge shaft 33. The fourth hinge fixing block 32 is fixed on the transmission assembly 1. The transmission assembly 1 can drive the fourth hinge fixing block 32 to reciprocate towards the rear hinge shaft assembly 2. The fourth hinge fixing block 32 and the third hinge fixing block 31 are rotatably connected through the third hinge shaft 33. The third hinge fixing block 31 and the second hinge fixing block 22 can be used to fix the display screen assembly 5 downward. When the fourth hinge fixing block 32 reciprocates towards the rear hinge shaft assembly 2, it can drive the display screen assembly 5 to rotate. Function: The mounting plate is equipped with a transmission assembly, a rear hinge shaft assembly, and a front hinge shaft assembly. The third hinge fixing block of the front hinge shaft assembly and the second hinge fixing block of the rear hinge shaft assembly can be used to fix the display screen assembly downwards. This has the following advantages: (1) When closed, the display area of ​​the screen (i.e., the front of the screen 53) faces downwards. When unfolded, the screen can rotate a small angle to face the rear users, achieving the desired angle effect; (2) Since the second hinge shaft can be located on the back of the screen, rather than at both ends of the display screen, Therefore, it does not affect the thickness of the screen, making the display screen thinner and more aesthetically pleasing; (3) The ceiling screen can be supported by the connecting rod. After unfolding, a triangular support is formed between the first hinge shaft, the second hinge shaft, and the third hinge shaft, which is more stable and can support a larger size and weight of the display screen; (4) Driven by the transmission component, the fourth hinge fixing block can drive the display screen component to rotate when it reciprocates towards the rear hinge shaft component, so that the display screen component has two degrees of freedom of movement, that is, it can move horizontally and downward at the same time, and the movement process occupies less space in the vehicle. In actual installation: Considering the length of the connecting rod 25, when closed, the installation position of the third hinge fixing block 31 of the front hinge shaft group on the display screen component will be in front of the installation position of the second hinge fixing block 22 of the rear hinge shaft component, see Figure 8 When unfolded, the mounting position of the third hinge fixing block 31 of the front hinge pivot assembly on the display assembly will be located above and in front of the mounting position of the second hinge fixing block 22 of the rear hinge pivot assembly, see [link / reference]. Figure 9 .

[0034] Specifically, the transmission assembly 1 includes a base plate 11 and a drive device. The base plate 11 is fixed to the mounting plate 4. A first fixing block 12 and a second fixing block 13 are respectively provided at the front and rear ends of the base plate 11, pointing vertically upwards. A slider 15 is provided between the first fixing block 12 and the second fixing block 13. Two guide rods 16 extending forward and backward are connected between the first fixing block 12 and the second fixing block 13. The slider 15 has two guide holes 151 that slide and engage with the two guide rods 16 respectively. Under the drive of the drive device, the slider 15 can reciprocate along the two guide rods 16. A fourth hinge fixing block 32 is fixed to the slider 15. Function: Driven by the drive device, the slider 15 can move forward and backward, and then the slider 15 drives the fourth hinge fixing block 32 to move forward and backward.

[0035] Specifically, a lead screw 17 extending forward and backward is connected between the first fixed block 12 and the second fixed block 13. The front and rear ends of the lead screw 17 are rotatably engaged with the first fixed block 12 and the second fixed block 13, respectively. A nut 152 threadedly connected to the lead screw 17 is also provided on the slider 15. The driving device includes a motor 18, which is connected to one end of the lead screw 17. The motor 18 can drive the lead screw 17 to rotate, thereby driving the slider 15 to reciprocate along the two guide rods 16. Function: Driven by the motor 18, the lead screw 17 rotates. Then, the nut on the slider 15 is threadedly connected to the lead screw 17, and the slider 15 is restricted from rotating under the action of the two guide rods, allowing the rotation of the lead screw to drive the slider 15 to move back and forth.

[0036] Specifically, a third fixing block 14 is provided behind the second fixing block 13 and fixed to the base plate 11. The motor 18 is fixed to the third fixing block 14, and the rear end of the lead screw 17 is connected to the motor 18. Function: The motor 18 can be installed by setting the third fixing block 14.

[0037] Specifically, the first fixing block 12 and the second fixing block 13 are respectively provided with bearings 19 that rotatably engage with the front and rear ends of the lead screw 17. Two guide rods 16 are distributed left and right, and the lead screw 17 is positioned between the two guide rods 16. Function: The bearings facilitate the rotation of the lead screw.

[0038] Specifically, the first hinge shaft 24 is provided with a first mounting groove 241 and a first rotating groove 242 distributed along the left and right sides. The first hinge fixing block 21 is fixedly connected to the first mounting groove 241, and the end of the connecting rod 25 away from the front hinge shaft assembly 3 is rotatably connected to the first rotating groove 242. The second hinge shaft 23 is provided with a second mounting groove 231 and a second rotating groove 232 distributed along the left and right sides. The second hinge fixing block 22 is fixedly connected to the second mounting groove 231, and the end of the connecting rod 25 near the front hinge shaft assembly 3 is rotatably connected to the second rotating groove 232. Function: See Figure 10The mounting port of the first hinge fixing block 21 is inserted into the first mounting groove 241 of the first hinge shaft 24, and the rotation hole of the connecting rod 25 is inserted into the first rotation groove 242 of the first hinge shaft 24; the mounting port of the second hinge fixing block 22 is inserted into the second mounting groove 231 of the second hinge shaft 23, and the rotation hole of the connecting rod 25 is inserted into the second rotation groove 232 of the second hinge shaft 23.

[0039] Preferably, the end of the second hinge fixing block 22 near the transmission component 1 is inserted into the second mounting groove 231 of the second hinge shaft 23, and the end away from the transmission component 1 is provided with screw holes for connection with the back of the display screen assembly 5.

[0040] Specifically, the connecting rod 25 can be an upwardly arched arc shape, with the end of the connecting rod 25 near the first hinge fixing block 21 pointing vertically downwards, and the end of the connecting rod 25 near the second hinge fixing block 22 tilting forwards and downwards. Function: [e.g., ...] Figure 8 When closed, the connecting rod 25 has an upward arched shape, which is better able to adapt to the rotation of the display screen. Of course, it can also be selected according to actual needs.

[0041] Specifically, the third hinge pivot 33 is provided with a third mounting groove 332 and a third rotating groove 331 distributed along the left and right sides. The fourth hinge fixing block 32 is fixedly connected to the third mounting groove 332, and the third hinge fixing block 31 is rotatably connected to the third rotating groove 331. Function: See Figure 11 Insert the rotating hole of the third hinge fixing block 31 into the third rotating groove 331 of the third hinge shaft 33, and insert the mounting port of the fourth hinge fixing block 32 into the third mounting groove 332 of the third hinge shaft 33.

[0042] Preferably, the end of the third hinge fixing block 31 away from the rear hinge pivot assembly 2 is inserted into the third rotation groove 331 of the third hinge pivot 33, and the end near the rear hinge pivot assembly 2 is provided with screw holes for connecting to the back of the display assembly 5.

[0043] Specifically, the transmission assembly 1, the rear hinge shaft assembly 2, and the front hinge shaft assembly 3 are disposed on the top surface of the mounting plate 4. Below the rear hinge shaft assembly 2 and the front hinge shaft assembly 3, there is a movable opening 44 on the mounting plate 4, through which the connecting rod 25, the second hinge fixing block 22, and the third hinge fixing block 31 can pass downwards through the movable opening 44. Function: This arrangement allows the display screen assembly 5 to be disposed below the mounting plate 4, enabling the transmission assembly 1, the rear hinge shaft assembly 2, and the front hinge shaft assembly 3 to be concealed by the mounting plate 4, resulting in a better aesthetic appearance.

[0044] Specifically, there are two rear hinge pivot assemblies 2 and two front hinge pivot assemblies 3. The two rear hinge pivot assemblies 2 are symmetrically arranged on the left and right sides of the rear end of the transmission assembly 1, and the two front hinge pivot assemblies 3 are symmetrically arranged on the left and right sides of the front end of the transmission assembly 1. Function: By setting two front hinge pivot assemblies 3 and two rear hinge pivot assemblies 2, the installed display screen assembly 5 is subjected to more balanced forces.

[0045] Actual connection relationships of each component: such as Figure 6-7 The transmission assembly 1 is fixed to the mounting plate 4 with screws through the screw holes of the base plate 11 and the first screw post 41 and the second screw post 42. The rear hinge shaft assembly 2 is fixed to the mounting plate 4 with screws through the first screw hole 211 and the mounting plate 4 with screws through the second screw hole 221 and the display screen assembly 5 with screws through the fourth screw post 51. Similarly, it is connected to the rear hinge shaft assembly 2 on the other side. The front hinge shaft assembly 3 is fixed to the display screen assembly 5 with screws through the third screw hole 311 and the display screen assembly 5 with screws through the fourth screw hole 321 and the slider 15 with screws through the fifth screw hole 153. Similarly, it is connected to the front hinge shaft assembly 3 on the other side.

[0046] Implementation principle: Reference Figure 8 Motor 18 drives lead screw 17 to rotate, causing slider 15 to move and generate displacement S1. The fourth hinge fixing block 32 on the third hinge shaft 33 is screwed to slider 15, generating an equal displacement S2. The third hinge fixing block 31 on the third hinge shaft 33 is screwed to display screen, driving display screen to generate angular displacement W1. The second hinge fixing block 22 on the second hinge shaft 23 is connected to display screen. The second hinge shaft 23 is rotatably connected to stainless steel connecting rod. The second hinge shaft 23 generates displacement S3 and angular displacement W2 simultaneously. The first hinge fixing block 21 on the first hinge shaft 24 is screwed to mounting plate 4. The first hinge shaft 24 is rotatably connected to connecting rod, and is forced to generate angular displacement W3.

[0047] like Figure 8 The initial state of the rotator, below Figure 9 With the rotator in its unfolded state, the display screen's angular displacement is: W1 = 180° - 110° = 70°.

[0048] To better align with the third and second hinge fixing blocks of the rotator, a recessed groove 54 is provided behind the fifth screw post 52 on the back of the display assembly 5. The fourth screw post 51 is located on the side of the recessed groove 54 furthest from the transmission assembly 1. The recessed groove 54 accommodates the second hinge shaft 23, thus facilitating the movement of the connecting rod. (See [reference]). Figure 6 .

[0049] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A vehicle-mounted ceiling-mounted display screen rotator, comprising a mounting plate, characterized in that: The mounting plate is provided with a transmission assembly, a rear hinge pivot assembly, and a front hinge pivot assembly. The rear hinge pivot assembly includes a first hinge fixing block, a second hinge fixing block, a second hinge pivot, a first hinge pivot, and a connecting rod. The first hinge fixing block is fixed to the mounting plate. The end of the first hinge fixing block away from the front hinge pivot assembly is rotatably connected to the connecting rod via the first hinge pivot. The end of the connecting rod near the front hinge pivot assembly is rotatably connected to the second hinge fixing block via the second hinge pivot. The front hinge... The hinge assembly includes a third hinge fixing block, a fourth hinge fixing block, and a third hinge pivot. The fourth hinge fixing block is fixed to the transmission assembly, which can drive the fourth hinge fixing block to reciprocate toward the rear hinge pivot assembly. The fourth hinge fixing block and the third hinge fixing block are rotatably connected through the third hinge pivot. The third hinge fixing block and the second hinge fixing block can be used to fix the display screen assembly downwards. When the fourth hinge fixing block reciprocates toward the rear hinge pivot assembly, it can drive the display screen assembly to rotate. The first hinge shaft is provided with a first mounting groove and a first rotating groove distributed along the left and right sides. The first hinge fixing block is fixedly connected to the first mounting groove, and the end of the connecting rod away from the front hinge shaft assembly is rotatably connected to the first rotating groove. The second hinge shaft is provided with a second mounting groove and a second rotating groove distributed along the left and right sides. The second hinge fixing block is fixedly connected to the second mounting groove, and the end of the connecting rod near the front hinge shaft assembly is rotatably connected to the second rotating groove. The connecting rod is an upward-arched arc shape. The end of the connecting rod near the first hinge fixing block is vertically downward, and the end of the connecting rod near the second hinge fixing block is inclined forward and downward. The third hinge shaft is provided with a third mounting groove and a third rotating groove distributed along the left and right sides. The fourth hinge fixing block is fixedly connected to the third mounting groove, and the third hinge fixing block is rotatably connected to the third rotating groove. The transmission assembly, the rear hinge shaft assembly, and the front hinge shaft assembly are disposed on the top surface of the mounting plate. The rear hinge shaft assembly and the front hinge shaft assembly are provided with movable openings on the mounting plate below them. The connecting rod, the second hinge fixing block, and the third hinge fixing block can pass downward through the movable openings.

2. The vehicle-mounted ceiling-mounted display screen rotator according to claim 1, characterized in that: The transmission assembly includes a base plate and a drive device. The base plate is fixed to the mounting plate. The front and rear ends of the base plate are respectively provided with a first fixing block and a second fixing block that are vertically upward. A slider is provided between the first fixing block and the second fixing block. Two guide rods extending in the front and rear are connected between the first fixing block and the second fixing block. The slider is provided with two guide holes that are slidably engaged with the two guide rods. The slider can reciprocate along the two guide rods under the drive of the drive device. The fourth hinge fixing block is fixed on the slider.

3. The vehicle-mounted ceiling-mounted display screen rotator according to claim 2, characterized in that: A lead screw extending along the front and rear is connected between the first fixed block and the second fixed block. The front and rear ends of the lead screw are rotatably engaged with the first fixed block and the second fixed block, respectively. The slider is also provided with a nut that is threadedly connected to the lead screw. The driving device includes a motor, which is connected to one end of the lead screw. The motor can drive the lead screw to rotate, thereby driving the slider to reciprocate along the two guide rods.

4. The vehicle-mounted ceiling-mounted display screen rotator according to claim 3, characterized in that: A third fixing block is provided behind the second fixing block and fixed to the base plate. The motor is fixed to the third fixing block, and the rear end of the lead screw is connected to the motor.

5. The vehicle-mounted ceiling-mounted display screen rotator according to claim 3, characterized in that: The first fixing block and the second fixing block are respectively provided with bearings that rotate with the front and rear ends of the lead screw. The two guide rods are distributed left and right, and the lead screw is disposed between the two guide rods.

6. A vehicle-mounted ceiling-mounted display screen rotator according to any one of claims 1 to 5, characterized in that: The number of the rear hinge shaft assembly and the number of the front hinge shaft assembly are both set to two. The two rear hinge shaft assemblies are symmetrically arranged on the left and right sides of the rear end of the transmission assembly, and the two front hinge shaft assemblies are symmetrically arranged on the left and right sides of the front end of the transmission assembly.

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