Automobile roof display screen device with two rotations and one movement

Abstract

The present invention provides a car roof display screen device with two rotations and one movement, which includes a drive assembly, a transmission assembly and a display screen mounting frame; the drive assembly is arranged into four groups, and the transmission assembly includes a longitudinal slide rail, a transverse slide rail, a longitudinal slider, a transverse slider, a rack-like flexible shaft, a rotating rod, a rotating arm, a rotating shaft, a T-shaped frame and a connecting rod; the longitudinal slider is arranged in the longitudinal slide rail; the two ends of the transverse slide rail are fixedly connected to the longitudinal slider; the rack-like flexible shaft is meshed and connected with the drive assembly; the rack-like flexible shaft penetrates the slide rail and is connected to the slider; the first end of the rotating arm is connected to the longitudinal slider through the rotating shaft, the second end of the rotating arm is connected to the T-shaped frame, and the T-shaped frame is rotatably connected to the connecting rod; the rotating rod is connected to the transverse slider; and the display screen mounting frame is connected to the connecting rod and the rotating rod. The present invention adopts a parallel structure that can be folded and hidden, is easy to install and has stable transmission, can achieve multi-dimensional angles and different position positioning, can fully meet the needs of different users, and is very practical.

Description

Technical Field

[0001] The invention relates to the technical field of display screen installation mechanisms, and in particular to a car roof display screen device with two rotations and one movement. Background Art

[0002] As cars become increasingly intelligent, existing car interiors are often equipped with display screens for rear passengers to view. However, currently, these displays are often fixed to the car's ceiling or front seats, with no adjustable position or angle. This makes it difficult for rear passengers to intuitively and comfortably view the content on the screens, as they face the screens at different angles. Furthermore, since the screens are fixed and exposed, unable to be moved, flipped, or hidden, they are easily damaged by bumps and take up space inside the car, reducing the car's user-friendly and comfortable design.

[0003] Therefore, it is very necessary to provide a car roof display screen device with two rotations and one movement that can achieve multi-dimensional angles and different position positioning to solve the above problems. Summary of the Invention

[0004] To address the shortcomings of the above-mentioned prior art, the present invention aims to provide a vehicle ceiling display screen device with two rotational and one translatory functions. This device features an optimized structure. By providing a drive assembly, a longitudinal slider, and a rack-like flexible shaft, the longitudinal slide rail enables forward and backward movement and flipping of the screen. Furthermore, by providing a transverse slider, transverse slide rail, rack-like flexible shaft, connecting rod, T-shaped bracket, connecting rod, and rotating rod, the screen can be flipped left and right. This device offers stable transmission and allows the screen to be positioned at multiple angles and positions.

[0005] The present invention is achieved through the following technical solutions:

[0006] A car roof display screen device with two rotations and one movement, comprising a drive assembly, a transmission assembly and a display screen mounting frame.

[0007] The drive assembly includes a first drive assembly, a second drive assembly, a third drive assembly and a fourth drive assembly of the same structure, each drive assembly includes a motor, a reducer and a gear meshing device, the gear meshing device includes a spur gear and a helical gear, the spur gear is meshed with the helical gear, the motor is fixedly connected to the reducer, and the output shaft of the reducer is keyed to the spur gear;

[0008] The transmission assembly includes a longitudinal slide rail, a transverse slide rail, a longitudinal slider, a transverse slider, a rack-like flexible shaft, a rotating rod, a rotating arm, a rotating shaft, a T-shaped frame and a connecting rod; the longitudinal slider is slidably arranged in the longitudinal slide rails on both sides; the two ends of the transverse slide rail are fixedly connected to the longitudinal slider, and the transverse slider is slidably arranged in the transverse slide rail; the rack-like flexible shaft includes a first-class rack flexible shaft, a second-class rack flexible shaft, a third-class rack flexible shaft, a fourth-class rack flexible shaft, a fifth-class rack flexible shaft, a sixth-class rack flexible shaft and a seventh-class rack flexible shaft, the first ends of the first-class rack flexible shaft and the second-class rack flexible shaft are meshed with the first driving assembly, the first ends of the third-class rack flexible shaft and the fourth-class rack flexible shaft are meshed with the second driving assembly, the first ends of the fifth-class rack flexible shaft and the sixth-class rack flexible shaft are meshed with the third driving assembly, and the first end of the seventh-class rack flexible shaft is meshed with the fourth driving assembly The second end of the first type rack flexible shaft, the second type rack flexible shaft, the third type rack flexible shaft, the fourth type rack flexible shaft, the fifth type rack flexible shaft, and the sixth type rack flexible shaft all penetrate into the longitudinal slide rail and are connected to the corresponding longitudinal slider. The second end of the seventh type rack flexible shaft sequentially passes through the longitudinal slide rail, the corresponding longitudinal slider and the transverse slide rail and is fixedly connected to the transverse slider. The first end of the rotating arm is connected to the longitudinal slider through a rotating shaft. The second end of the rotating arm is respectively connected to the first end and the second end of the T-shaped frame, and the third end of the T-shaped frame is rotatably connected to the first end of the connecting rod. The second end of the connecting rod is rotatably connected to the longitudinal sides of the display screen mounting frame respectively. The upper end of the rotating rod is connected to the transverse slider, and the lower end of the rotating rod is connected to the transverse side of the display screen mounting frame.

[0009] The motors in the first drive assembly, the second drive assembly, the third drive assembly, and the fourth drive assembly respectively drive the rack-like flexible shafts meshing therewith to move, and the rack-like flexible shafts drive the longitudinal sliders to move at the same speed and in the same direction on the longitudinal slide rails, thereby driving the rotating arm, the connecting rod, and the display screen mounting frame to move along the longitudinal slide rails at the same speed and in the same direction along the transverse slide rails, thereby achieving forward and backward movement of the display screen;

[0010] The third and fourth drive assemblies stop working, and the motors in the first and second drive assemblies drive the rack-like flexible shafts meshing therewith to slide at a vector speed. The rack-like flexible shafts drive the longitudinal sliders to move at a vector speed on the longitudinal slide rails, and the rotating arms drive the T-shaped frame, the connecting rod, and the display screen mounting frame to rotate, thereby realizing the front and back flipping of the display screen.

[0011] The first drive assembly, the second drive assembly and the third drive assembly stop working, the motor in the fourth drive assembly drives the rack flexible shaft engaged with it to slide in the longitudinal slide rail and the transverse slide rail, the rack-like flexible shaft drives the transverse slider to move on the transverse slide rail, and the rotating rod performs relative movement, driving the display screen mounting frame to realize the left and right flipping of the display screen under the transmission of the connecting rod.

[0012] Preferably, the gear meshing device also includes a bottom plate, a top plate, a frustum, a pressure ring and a soft shaft limiting slide block, the bottom plate is installed on the outer disk of the reducer output shaft, the center of the bottom plate is provided with a flat gear mounting groove and a helical gear mounting groove, the flat gear is arranged in the flat gear mounting groove, the flat keyway provided on the flat gear is nested and matched with the flat key on the reducer output shaft; the helical gear can be rotatably embedded in the helical gear mounting groove and mesh with the external teeth of the frustum through its internal tooth groove; first positioning grooves for installing the soft shaft limiting slide block are symmetrically provided on both sides of the helical gear mounting groove; the pressure ring is nested in the end of the reducer output shaft and presses the helical gear, the frustum is fixedly connected to the end of the output shaft of the reducer on the outside of the pressure ring; the top plate is fixedly connected to the bottom plate on the outside of the frustum; semicircular soft shaft drive channels are provided on both sides of the opposite sides of the bottom plate and the top plate, and a circular channel for the rack-like soft shaft to pass through is formed between the symmetrically arranged semicircular soft shaft drive channels and the first positioning groove, and the outer tooth pitch circle line of the helical gear is tangent to the circular channel.

[0013] Preferably, a longitudinal slider slide and a longitudinal soft shaft channel are provided in the longitudinal slide rail, the longitudinal slider slide includes a first longitudinal slider slide and a second longitudinal slider slide, the longitudinal soft shaft channel includes a first longitudinal soft shaft channel, a second longitudinal soft shaft channel and a third longitudinal soft shaft channel; a transverse slider slide and a transverse soft shaft channel are provided in the transverse slide rail.

[0014] Preferably, the longitudinal slider includes a first longitudinal slider, a second longitudinal slider, a third longitudinal slider, a fourth longitudinal slider, a fifth longitudinal slider and a sixth longitudinal slider, the first longitudinal slider and the second longitudinal slider, the third longitudinal slider and the fourth longitudinal slider are symmetrically installed in pairs in the first longitudinal slider slides of the longitudinal slide rails on both sides, the fifth longitudinal slider and the sixth longitudinal slider are symmetrically installed in the second longitudinal slider slides of the longitudinal slide rails on both sides, and the fifth longitudinal slider is provided with a fourth longitudinal soft shaft channel; the transverse slider is set as one piece and installed in the transverse slider slide.

[0015] Preferably, the first type of rack flexible shaft and the second type of rack flexible shaft are arranged in pairs and respectively pass through the first longitudinal flexible shaft channel at the first end of the longitudinal slide rail and are fixedly connected to the first longitudinal slider and the third longitudinal slider respectively; the third type of rack flexible shaft and the fourth type of rack flexible shaft are arranged in pairs and respectively pass through the first longitudinal flexible shaft channel at the second end of the longitudinal slide rail and are fixedly connected to the second longitudinal slider and the fourth longitudinal slider respectively; the fifth type of rack flexible shaft and the sixth type of rack flexible shaft are arranged in pairs and respectively pass through the second longitudinal flexible shaft channel at the first end of the longitudinal slide rail and are fixedly connected to the fifth longitudinal slider and the sixth longitudinal slider respectively; a seventh type of rack flexible shaft passes through the third longitudinal flexible shaft channel at the first end of the longitudinal slide rail, and passes through the fourth longitudinal flexible shaft channel and the transverse slider slideway in sequence and is fixedly connected to the transverse slider.

[0016] Preferably, a hose is further provided on the outside of the rack-like flexible shaft, and the hose is located between the longitudinal slide rail and the drive assembly, second positioning grooves are provided at both ends of the circular channel, a first end of the hose is fixed in the second positioning groove, the rack-like flexible shaft passes through the hose and engages with the bevel gear, and the second end of the hose is fixedly connected to the ends of the plurality of longitudinal flexible shaft channels respectively;

[0017] The hose includes two sections of hose, and the two sections of hose are connected by a hose connector. The hose connector includes a threaded part, a nut part and a locking buckle. The threaded part and the nut part are respectively fixedly connected to one end of the two sections of hose and locked by the locking buckle.

[0018] Preferably, the rotating rod includes a first rotating rod, a second rotating rod and a third rotating rod, both ends of the first rotating rod are provided with mounting holes; the first end of the second rotating rod is provided with a mounting hole, and the second end of the second rotating rod is provided with a slide; the first end of the third rotating rod is provided with a slide groove, and the second end of the third rotating rod is provided with a mounting hole; the first end of the first rotating rod is rotatably connected to the transverse slider through a pin shaft, the second end of the first rotating rod is rotatably connected to the first end of the second rotating rod through a pin shaft, the slide at the second end of the second rotating rod is movably connected to the slide groove at the first end of the third rotating rod, and the second end of the third rotating rod is rotatably connected to the display screen mounting bracket through a pin shaft.

[0019] Preferably, the rotating arm includes a first rotating arm, a second rotating arm, a third rotating arm and a fourth rotating arm, the first ends of the first rotating arm, the second rotating arm, the third rotating arm and the fourth rotating arm are respectively fixedly connected to the second end of the rotating shaft, and the first ends of the rotating shaft are respectively rotatably connected to the first longitudinal slider, the second longitudinal slider, the third longitudinal slider and the fourth longitudinal slider; the second ends of the first rotating arm, the second rotating arm, the third rotating arm and the fourth rotating arm are all connected to the T-shaped frame; shaft shoulders are provided at both ends of the rotating shaft, the first end of the rotating shaft passes through a plurality of longitudinal sliders and is axially positioned by a shaft end retaining ring, and friction-resistant plates are provided between the plurality of longitudinal sliders and the shaft shoulders and the shaft end retaining rings.

[0020] Preferably, the first ends of the two T-shaped frames are rotatably connected to the first rotating arm and the second rotating arm respectively, the second ends of the two T-shaped frames are fixedly connected to the third rotating arm and the fourth rotating arm respectively, the third ends of the two T-shaped frames are rotatably connected to the first ends of the two connecting rods, and the second ends of the two connecting rods are rotatably connected to the display screen mounting frame.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. A car ceiling display screen device with two rotations and one movement of the present invention is installed on the car ceiling. The motors of the four drive assemblies rotate at the same speed, respectively driving seven rack-like flexible shafts to slide at the same speed and in the same direction, thereby respectively driving multiple longitudinal sliders to move at the same speed and in the same direction on the longitudinal slide rails. The multiple longitudinal sliders respectively drive the rotating arms, transverse slide rails and transverse sliders to move at the same speed and in the same direction, thereby realizing the front and back movement of the display screen along with the display screen mounting frame.

[0023] 2. The present invention uses two drive components whose motors rotate at non-synchronous speeds to drive the meshing rack-like flexible shafts to slide at non-synchronous speeds (herein, vector speed) in the hose. At this time, the other drive components do not work, the transverse slide rails and the transverse slider do not move, and the sliding rack-like flexible shafts drive the longitudinal sliders connected to them to move at non-synchronous speeds (herein, vector speed), thereby driving the rotating arm to rotate, and the rotating arm drives the T-shaped frame, connecting rod, display screen mounting frame and other connecting parts to rotate, thereby realizing the front and back flipping of the display screen.

[0024] 3. The present invention only rotates the motor in one drive assembly to drive the rack-like flexible shaft engaged with it to slide in the flexible shaft channels in the longitudinal slide rail and the transverse slide rail. The other three drive assemblies do not work, the longitudinal slider does not move, and the sliding rack-like flexible shaft drives the transverse slider to move on the transverse slide rail, thereby driving the first rotating rod and the second rotating rod to rotate relative to each other, and the second rotating rod and the third rotating rod to slide relative to each other. The third rotating rod drives the display screen mounting frame to flip and swing left and right with the axis of the T-frame mounting hole as the rotating axis under the support of the connecting rod, thereby realizing the left and right flipping of the display screen.

[0025] 4. The present invention is provided with a gear meshing device, through which the helical gears are engaged with the rack-like flexible shafts arranged in pairs. Through the power of the driving motor, the slider can maintain the same speed and run smoothly in the hose on the symmetrical rack-like flexible shafts.

[0026] 5. The rotating rod provided in the present invention is connected end to end through three sections of rotating rods, and the slides and slide grooves of the second rotating rod and the third rotating rod cooperate to provide a travel for the left and right flip angles of the display screen mounting frame.

[0027] 6. In the present invention, the two rotating arms on the same side are connected to the two ends of the T-shaped frame in a manner in which one end is fixed and the other end is rotated, so that the display screen mounting frame can freely control the angle when flipping forward and backward according to user needs.

[0028] 7. The present invention is easy to install, adopts a parallel structure that can be folded and hidden, has stable transmission, can achieve multi-dimensional angles and different position positioning, can fully meet the needs of different users, and is extremely practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the external structure of the present invention;

[0030] Figure 2 An exploded schematic diagram of the transmission assembly of the present invention;

[0031] Figure 3 Schematic diagram of the internal principle of the driving assembly of the present invention;

[0032] Figure 4 It is a structural schematic diagram of the hose connector of the present invention;

[0033] Figure 5a is an exploded schematic diagram of the second side of the transmission assembly of the present invention;

[0034] Figure 5b is an exploded schematic diagram of a first side of a transmission assembly of the present invention;

[0035] Figure 5c This is a schematic diagram of an explosion of the rotating rod of the present invention;

[0036] Figure 5d A schematic diagram of the sliding portion of the rotating rod of the present invention;

[0037] Figure 6 It is an enlarged structural schematic diagram of the longitudinal slide rail of the present invention;

[0038] Figure 7a A schematic diagram of the display screen of the present invention in a parallel folded state;

[0039] Figure 7bA schematic diagram of the display screen of the present invention in a front-to-back flipped state;

[0040] Figure 7c It is a schematic diagram of the display screen of the present invention in the left-right flipping state.

[0041] Description of the marks in the figure:

[0042] 101. First drive assembly; 102. Second drive assembly; 103. Third drive assembly; 104. Fourth drive assembly; 11. Motor; 12. Reducer; 13. Bottom plate; 14. Top plate; 15. Spur gear; 16. Helical gear; 17. Round table; 18. Press ring; 19. Flexible shaft limit slide block;

[0043] 2. Transmission assembly; 21. First type rack flexible shaft; 22. Second type rack flexible shaft; 23. Third type rack flexible shaft; 24. Fourth type rack flexible shaft; 25. Fifth type rack flexible shaft; 26. Sixth type rack flexible shaft; 27. Seventh type rack flexible shaft; 28. First longitudinal slider; 29. Second longitudinal slider; 210. Third longitudinal slider; 211. Fourth longitudinal slider; 212. Fifth longitudinal slider; 213. Sixth longitudinal slider; 214. Transverse slider; 215. First rotating arm; 216. Second rotating arm; 217. Third rotating arm; 218. Fourth rotating arm; 219. Rotating shaft; 2 20. Shaft end retaining ring; 221. Pin; 222. T-shaped frame; 223. Connecting rod; 224. First rotating rod; 225. Second rotating rod; 226. Third rotating rod; 227. Horizontal slide rail; 228. Longitudinal slide rail; 229. Hose connector; 230. Threaded member; 231. Nut; 232. Locking buckle; 233. Hose; 234. Anti-friction sheet; 236. Fourth longitudinal flexible shaft channel; 237. First longitudinal slider channel; 238. Second longitudinal slider channel; 239. First longitudinal flexible shaft channel; 240. Second longitudinal flexible shaft channel; 241. Third longitudinal flexible shaft channel;

[0044] 3. Display screen mounting bracket; 31. First mounting hole; 32. Second mounting hole; 33. Third mounting hole; 34. Fourth mounting hole; 35. Fifth mounting hole; 36. Sixth mounting hole; 37. Seventh mounting hole;

[0045] 4. Display screen;

[0046] 51. Slide; 52. Slide groove; 53. Long hole for limiting; 54. Bolt fixing hole; 55. Bolt; 56. Nut. DETAILED DESCRIPTION

[0047] To fully describe the technical content, structural features, objectives and beneficial effects of the present invention, the following is a detailed description with reference to the accompanying drawings.

[0048] The present invention provides a vehicle ceiling display screen device with two rotations and one movement, comprising a drive assembly, a transmission assembly 2, and a display screen mounting bracket 3. The drive assembly comprises a first drive assembly 101, a second drive assembly 102, a third drive assembly 103, and a fourth drive assembly 104, each of which has the same structure. Each drive assembly comprises a motor 11, a reducer 12, and a gear meshing device. The gear meshing device comprises a spur gear 15 and a helical gear 16, the spur gear and the helical gear being meshed together. The motor 22 is fixedly connected to the reducer 12, and the output shaft of the reducer is keyed to the spur gear. Specifically, the gear meshing device also includes a bottom plate 13, a top plate 14, a frustum 17, a pressure ring 18 and a flexible shaft limiting slide block 19. The bottom plate is mounted on the outer disk of the output shaft of the reducer. The center of the bottom plate 13 is provided with a flat gear mounting groove and a helical gear mounting groove. The flat gear 15 is provided in the flat gear mounting groove. The flat key groove provided on the flat gear is nested with the flat key on the output shaft of the reducer. The helical gear 16 can be rotatably embedded in the helical gear mounting groove and meshes with the outer teeth of the flat gear through its internal tooth groove. The two sides of the helical gear mounting groove are symmetrically provided with A first positioning groove for installing the flexible shaft limiting slide block 19; the pressure ring 18 is nested in the end of the reducer output shaft and presses the bevel gear 16, and the frustum 17 is fixedly connected to the end of the output shaft of the reducer on the outside of the pressure ring 18; the top plate 14 is fixedly connected to the bottom plate 13 on the outside of the frustum; semicircular flexible shaft drive channels are provided on both sides of the opposite side of the bottom plate and the top plate, and a circular channel for the rack-like flexible shaft to pass through is formed between the symmetrically arranged semicircular flexible shaft drive channel and the first positioning groove, and the outer tooth dividing circle line of the bevel gear 16 is tangent to the circular channel.

[0049] The transmission assembly 2 includes a longitudinal slide rail 228, a transverse slide rail 227, a longitudinal slider, a transverse slider 214, a rack-like flexible shaft, a rotating rod, a rotating arm, a rotating shaft 219, a T-shaped frame 222 and a connecting rod 223; the longitudinal slider is slidably arranged in the longitudinal slide rails on both sides; the two ends of the transverse slide rail are fixedly connected to the longitudinal slider, and the transverse slider is slidably arranged in the transverse slide rail; the rack-like flexible shaft includes a first rack flexible shaft 21, a second rack flexible shaft 22, a third rack flexible shaft 23, a fourth rack flexible shaft 24, a fifth rack flexible shaft 25, a sixth rack flexible shaft 26 and a seventh rack flexible shaft 27, the first end of the first rack flexible shaft and the second rack flexible shaft is connected to the first driving assembly 101, the first end of the third rack flexible shaft and the fourth rack flexible shaft is connected to the second driving assembly 102, the first end of the fifth rack flexible shaft and the sixth rack flexible shaft is connected to the third driving assembly 103, the seventh rack flexible shaft The first end of the rack flexible shaft is meshed with the fourth drive assembly 104; the second ends of the first type rack flexible shaft, the second type rack flexible shaft, the third type rack flexible shaft, the fourth type rack flexible shaft, the fifth type rack flexible shaft, and the sixth type rack flexible shaft all pass through the longitudinal slide rail 228 and are connected to the corresponding longitudinal slider, and the second end of the seventh type rack flexible shaft passes through the longitudinal slide rail 228, the corresponding longitudinal slider and the transverse slide rail 227 in sequence and is fixedly connected to the transverse slider 214; the first end of the rotating arm is connected to the longitudinal slider through the rotating shaft 219, and the second end of the rotating arm is respectively connected to the first end and the second end of the T-shaped frame 222, and the third end of the T-shaped frame is rotatably connected to the first end of the connecting rod 223, and the second end of the connecting rod is rotatably connected to the longitudinal sides of the display screen mounting frame 3, the upper end of the rotating rod is connected to the transverse slider 214, and the lower end of the rotating rod is connected to the transverse side of the display screen mounting frame 3.

[0050] The motors 11 in the first drive assembly 101, the second drive assembly 102, the third drive assembly 103, and the fourth drive assembly 104 respectively drive the meshed rack-like flexible shafts to move. The rack-like flexible shafts drive the longitudinal slider to move at the same speed and direction on the longitudinal slide rail 228. The rotating arm, the connecting rod 223, and the display screen mounting frame 3 all move at the same speed and direction along the transverse slide rail 227, achieving forward and backward movement of the display screen. The third drive assembly 103 and the fourth drive assembly 104 stop working, and the motors 11 in the first drive assembly 101 and the second drive assembly 102 drive the meshed rack-like flexible shafts to slide at a vector speed. The rack-like flexible shafts drive the longitudinal slider to move at a vector speed on the longitudinal slide rail 228. The rotating arm drives the T-shaped frame 222, the connecting rod 223, and the display screen mounting frame 3 to rotate, achieving forward and backward flipping of the display screen 4. The first drive assembly 101, the second drive assembly 102 and the third drive assembly 103 stop working, and the motor 11 in the fourth drive assembly 104 drives the rack flexible shaft engaged therewith to slide in the longitudinal slide rail 228 and the transverse slide rail 227. The rack-like flexible shaft drives the transverse slider 214 to move on the transverse slide rail 227, and the rotating rods move relative to each other, driving the display screen mounting frame 3 to realize the left and right flipping of the display screen 4 under the transmission of the connecting rod 223.

[0051] The present invention provides a car roof display screen device with two rotations and one movement, such as Figure 1 As shown, it includes a drive assembly, a transmission assembly 2, a display screen mounting frame 3, and a display screen 4. The drive assembly, transmission assembly 2, display screen mounting frame 3, and display screen 4 are all connected to the control system, and the display screen 4 is fixedly mounted on the display screen mounting frame 3. The drive assembly is provided in four groups, namely a first drive assembly 101, a second drive assembly 102, a third drive assembly 103, and a fourth drive assembly 104. The four drive assemblies have identical structural compositions and operating principles.

[0052] like Figure 2 and Figure 3 As shown, each drive assembly includes a motor 11, a reducer 12, a bottom plate 13, a top plate 14, a flat gear 15, a helical gear 16, a round table 17, a pressure ring 18 and a flexible shaft limiting slide block 19. The reducer is a worm gear reducer and the reducer output shaft has a spline.

[0053] The transmission assembly 2 includes a first rack flexible shaft 21, a second rack flexible shaft 22, a third rack flexible shaft 23, a fourth rack flexible shaft 24, a fifth rack flexible shaft 25, a sixth rack flexible shaft 26, a seventh rack flexible shaft 27, a first longitudinal slider 28, a second longitudinal slider 29, a third longitudinal slider 210, a fourth longitudinal slider 211, a fifth longitudinal slider 212, a sixth longitudinal slider 213, a transverse slider 214, a first rotating arm 215, a second rotating arm 216, a third rotating arm 217, a fourth rotating arm 218, a rotating shaft 219, a shaft end retaining ring 220, a pin 221, a T-shaped frame 222, a connecting rod 223, a first rotating rod 224, a second rotating rod 225, a third rotating rod 226, a transverse slide rail 227, a longitudinal slide rail 228, a hose connector 229, a hose 233 and a wear-resistant sheet 234.

[0054] Semicircular flexible shaft drive channels are symmetrically arranged on both sides of the bottom plate 13 and the top plate 14. A flat gear mounting groove and a helical gear mounting groove are provided in the center of the bottom plate 13. First positioning grooves are provided on the left and right sides of the helical gear mounting groove for positioning and installing the flexible shaft limiting slide block 19. Second positioning grooves for securing the ends of the hoses are provided at the two opposing ends of the semicircular flexible shaft drive channels, i.e., on the front and rear sides of the first positioning groove.

[0055] The bottom plate 13 is mounted on the outer disk of the output shaft of the reducer through the positioning hole. The bottom plate 13 and the top plate 14 are in contact with one side of the semicircular flexible shaft drive channel and are fixed by screws, thereby forming two circular pipes for the rack-like flexible shaft to pass through. The ends of the hose 233 are installed in the second positioning grooves at both ends of the two circular pipes.

[0056] The flat gear 15 is provided with a flat keyway, which nests with the flat key on the output shaft of the reducer to achieve power transmission. The helical gear 16 has an internal tooth groove and is rotatably mounted in the corresponding helical gear mounting groove between the bottom plate 13 and the top plate 14. The internal tooth groove nests with the external teeth of the flat gear 15, so that the pitch circle of the helical gear 16 is flush and tangent to the circular pipe between the top plate 14 and the bottom plate 13. The flexible shaft limiting slide block 19 is installed in the corresponding first positioning groove between the bottom plate 13 and the top plate 14. Flexible hoses are provided at both ends of the circular pipe to allow the rack-like flexible shaft to pass through and limit its sliding.

[0057] like Figure 3As shown, the first ends of the first type rack flexible shaft 21 and the second type rack flexible shaft 22 pass through the two circular channels of the first drive assembly 101 respectively. The first ends of the third type rack flexible shaft 23 and the fourth type rack flexible shaft 24 pass through the two circular channels of the second drive assembly 102 respectively. The first ends of the fifth type rack flexible shaft 25 and the sixth type rack flexible shaft 26 pass through the two circular channels of the third drive assembly 103 respectively. The first end of the seventh type rack flexible shaft 27 passes through one of the circular channels of the fourth drive assembly 104. All the rack-like flexible shafts pass through the hose 233 and are meshed and connected with the bevel gear 16 in the circular channel, and are firmly meshed under the restriction of the flexible shaft limiting slide block 19. The rotation of the bevel gear 16 can drive the rack-like flexible shaft to slide precisely in the hose 233 and the circular channel.

[0058] The hose 233 can be split into two sections, and the two sections of the hose 233 can be connected through a hose connector 229. The first end of the hose 233 is positioned and installed at the end of the circular channel between the top plate 14 and the bottom plate 13 through the second positioning groove. The second end of the hose 233 is fixedly connected to the longitudinal soft shaft channel set at the end of the longitudinal slide rail and the end of the fourth longitudinal soft shaft channel 236 on the fifth longitudinal slider. The rack-like soft shaft penetrates into the hose 233 and slides therein.

[0059] like Figure 4 As shown, the hose connector 229 includes a threaded member 230, a nut member 231 and a locking buckle 232. The threaded member and the nut member are respectively fixedly connected to the ends of the two sections of hose 233 and locked by the locking buckle 232. The threaded member and the nut member can be connected together by the threaded nut.

[0060] The longitudinal sliders include a first longitudinal slider 28, a second longitudinal slider 29, a third longitudinal slider 210, a fourth longitudinal slider 211, a fifth longitudinal slider 212, and a sixth longitudinal slider 213. The fifth longitudinal slider 212 is provided with a fourth longitudinal flexible shaft channel 236 for the seventh type of rack flexible shaft 27. The first and second longitudinal sliders 28, 29, third and fourth longitudinal sliders 210, 211 are mounted in pairs in the first longitudinal slider tracks 237 of the longitudinal rails 228 on either side. The fifth and sixth longitudinal sliders 212, 213 are mounted in the second longitudinal slider tracks 238 of the longitudinal rails 228 on either side. The transverse slider 214 is mounted in the transverse slider tracks of the transverse rails 227. The first longitudinal slider 28 is fixedly connected to the first type of rack flexible shaft 21, the second longitudinal slider 29 is fixedly connected to the third type of rack flexible shaft 23, the third longitudinal slider 210 is fixedly connected to the second type of rack flexible shaft 22, the fourth longitudinal slider 211 is fixedly connected to the fourth type of rack flexible shaft 24, the fifth longitudinal slider 212 is fixedly connected to the fifth type of rack flexible shaft 25, the sixth longitudinal slider 213 is fixedly connected to the sixth type of rack flexible shaft 26, and the transverse slider 214 is fixedly connected to the seventh type of rack flexible shaft 27. All types of rack flexible shafts can respectively drive the longitudinal slider and transverse slider 214 connected thereto to slide in the longitudinal slider slideway and the transverse slider slideway.

[0061] Both ends of the transverse guide rail 227 are fixedly connected to the fifth longitudinal slider 212 and the sixth longitudinal slider 213 respectively. Driven by the fifth type rack flexible shaft 25 and the sixth type rack flexible shaft 26, the transverse guide rail 227 can move longitudinally on the longitudinal slide rail 228.

[0062] like Figure 6 As shown, the longitudinal slide rail 228 is provided with a first longitudinal slide rail 237 for the first longitudinal slider 28, the second longitudinal slider 29, the third longitudinal slider 210 and the fourth longitudinal slider 211, a second longitudinal slide rail 238 for the fifth longitudinal slider and the sixth longitudinal slider, a first longitudinal flexible shaft channel 239 for the first type of rack flexible shaft 21, the second type of rack flexible shaft 22, the third type of rack flexible shaft 23 and the fourth type of rack flexible shaft 24, a second longitudinal flexible shaft channel 240 for the fifth type of rack flexible shaft 25 and the sixth type of rack flexible shaft 26, and a third longitudinal flexible shaft channel 241 for the seventh type of rack flexible shaft 27. The transverse slide rail 227 is provided with a transverse slide rail groove for the transverse slider 224 and a transverse flexible shaft channel for the seventh type of rack flexible shaft 27 to pass through.

[0063] The first and second rack shafts 21 and 22 respectively pass through the first longitudinal flexible shaft channel 239 from the first end of the longitudinal rail 228 and are fixedly connected to the first longitudinal slider 28 and the third longitudinal slider 210, respectively. The third and fourth rack shafts 23 and 24 respectively pass through the first longitudinal flexible shaft channel 239 from the second end of the longitudinal rail 228 and are fixedly connected to the second longitudinal slider 29 and the fourth longitudinal slider 211, respectively. The fifth and sixth rack shafts 25 and 26 respectively pass through the second longitudinal flexible shaft channel 240 from the first end of the longitudinal rail 228 and are fixedly connected to the fifth and sixth longitudinal sliders 212 and 213, respectively. The seventh rack shaft 27 passes through the third longitudinal flexible shaft channel 241, the fourth longitudinal flexible shaft channel 236 provided on the fifth longitudinal slider 212, and the transverse flexible shaft channel provided on the transverse rail, from the first end of the longitudinal rail 228, and is fixedly connected to the transverse slider 214.

[0064] The pivoting arms include a first pivoting arm 215, a second pivoting arm 216, a third pivoting arm 217, and a fourth pivoting arm 218. Each of the four pivoting arms has a mounting hole at each end. The first, second, third, and fourth pivoting arms 215, 216, 217, and 218 are pivotally connected to the first, third, second, and fourth longitudinal sliders 28, 210, 29, and 211, respectively, via four pivoting shafts 219. In this embodiment, each of the four pivoting shafts 219 has a shoulder at its first end. The shoulder passes through the first, third, second, and fourth longitudinal sliders 28, 210, 29, and 211, respectively, and is axially positioned by a shaft end retaining ring 220. Anti-friction pads 234 are installed between the shoulders and the shaft end retaining ring 220 on both sides of the longitudinal sliders. The longitudinal sliders form a clearance fit with the first ends of the pivoting shafts 219, allowing the pivoting shafts 219 to rotate about the central axis of the longitudinal slider holes. The second end of the rotating shaft 219 forms an interference fit with the mounting holes of the first ends of the first rotating arm 215 , the second rotating arm 216 , the third rotating arm 217 and the fourth rotating arm 218 , respectively, and cannot rotate relative to each other.

[0065] There are two T-shaped frames 222, each with mounting holes at its three ends. The second ends of the first and second rotating arms 215, 216 are connected to the mounting holes at the first ends of the two T-shaped frames 222 via pins 221, respectively. The first rotating arms can rotate relative to the T-shaped frames 222. The third and fourth rotating arms 217, 218 are fixedly connected to the mounting holes at the second ends of the two T-shaped frames 222 via pins 221, respectively. The second rotating arms and the T-shaped frames are installed with an interference fit at an angle and cannot rotate relative to each other.

[0066] There are two connecting rods 223, each with a mounting hole at each end. The mounting holes at the first ends of the two connecting rods 223 are connected to the mounting holes at the third ends of the two T-shaped brackets 222 via pins 221, and the two can rotate relative to each other about the central axis of the mounting holes. The mounting holes at the second ends of the two connecting rods 223 are rotatably connected to the longitudinal sides of the display mounting bracket 3.

[0067] As shown in Figure 5(c), the rotating rods include a first rotating rod 224, a second rotating rod 225, and a third rotating rod 226. The first rotating rod 224 has mounting holes at both ends, the second rotating rod 228 has a mounting hole at its first end, and a slide 51 is provided at its second end. The third rotating rod 226 has a slide groove 52 at its first end, and a mounting hole at its second end. The mounting hole at the first end of the first rotating rod 224 is connected to the transverse slider 214 via a pin 221, allowing the two to rotate relative to each other. The mounting hole at the second end of the first rotating rod 224 is connected to the second rotating rod 225 via a pin 221, allowing the two to rotate relative to each other. The slide 51 at the second end of the second rotating rod 225 is matingly connected to the slide groove 52 at the first end of the third rotating rod 226, allowing the two to move relative to each other. As shown in Figure 5(d), the second rotating rod 225 is provided with a long limit hole 53, and the first end of the third rotating rod 226 is provided with a limit bolt fixing hole 54. After the second rotating rod 225 is inserted into the slide groove 52 of the third rotating rod 226, a bolt 56 is inserted through the long limit hole 53 and the limit bolt fixing hole 54 of the second rotating rod 226, respectively, and the bolt 55 is fixed to the third rotating rod with a nut 56, thereby achieving sliding limit of the second rotating rod. The mounting hole at the second end of the third rotating rod 226 is connected to a lateral side of the display screen mounting bracket 3 via a pin 221, allowing the two to rotate relative to each other.

[0068] In this embodiment, the display screen mounting frame 3 is provided with seven mounting holes, including a first mounting hole 31, a second mounting hole 32, a third mounting hole 33, a fourth mounting hole 34, a fifth mounting hole 35, a sixth mounting hole 36, and a seventh mounting hole 37. As shown in FIG5(c), the first, second, third, fourth, fifth, and sixth mounting holes are symmetrically arranged on either side of the longitudinal direction of the display screen mounting frame 3, while the seventh mounting hole is provided on one side of the transverse direction of the display screen mounting frame. In this embodiment, the first and second mounting holes 31 and 32 are respectively connected to the mounting holes at the second ends of the two connecting rods 222 via pins 221, and the two can rotate about the axis of the mounting holes. The seventh mounting hole 37 is rotatably connected to the third rotating rod.

[0069] The specific embodiments of the present invention are further described below:

[0070] Moving forward and backward: The motors in the four drive assemblies rotate at the same speed, and the helical gear 16 is driven to rotate through the reducer 12, thereby driving the seven rack-like flexible shafts meshing therewith to slide at the same speed and in the same direction in the hose. The first rack-like flexible shaft 21, the second rack-like flexible shaft 22, the third rack-like flexible shaft 23, the fourth rack-like flexible shaft 24, the fifth rack-like flexible shaft 25, and the sixth rack-like flexible shaft 26 respectively drive the first longitudinal slider 28, the third longitudinal slider 210, the second longitudinal slider 29, the fourth longitudinal slider 211, the fifth longitudinal slider 212, and the sixth longitudinal slider 213 in The longitudinal slide rail 228 moves at the same speed and in the same direction, thereby driving the rotating arm and the transverse slide rail 227 to move at the same speed and in the same direction. The seventh type of rack flexible shaft 27 moves at the same speed and in the same direction as the other six types of rack flexible shafts. Therefore, the transverse slider 214 will only move longitudinally on the longitudinal slide rail 228 along with the transverse slide rail 227, and will not move transversely on the transverse slide rail 227. The seven sliders move in the same direction and at the same speed, and no relative movement occurs. Therefore, the rotating arm, connecting rod 222, and display screen mounting frame 3 will not produce relative movement, but will only move in the same direction, thereby realizing the forward and backward movement of the display screen 4, as shown in Figure 7(a).

[0071] Flipping forward and backward: The motors 11 in the first drive assembly 101 and the second drive assembly 102 rotate at non-synchronous speeds, and the helical gear 16 is driven to rotate through the reducer 12, thereby driving the two rack-like flexible shafts meshing therewith to slide at non-synchronous speeds (here referring to vector speeds) in the hose. At this time, the third drive assembly 103 and the fourth drive assembly 104 do not work, the transverse slide rail 227 and the transverse slider 214 do not move, and the first rack flexible shaft 21, the second rack flexible shaft 22, the third rack flexible shaft 23, and the fourth rack flexible shaft 24 drives the first longitudinal slider 28, the third longitudinal slider 210, the second longitudinal slider 29, and the fourth longitudinal slider 211 to move at non-uniform speeds (herein, vector speed) on the longitudinal slide rail 228, thereby driving the rotating arm to rotate, and the rotating arm drives the connecting parts such as the T-shaped frame 222, the connecting rod 223 and the display screen mounting frame 3 to rotate. Since the rotating arm, the T-shaped frame 222, the connecting rod 223 and the display screen mounting frame 3 do not have a rotating pair in the front-to-back direction, the display screen 4 can be flipped forward and backward, as shown in Figure 7(b).

[0072] Left and right flipping: the motor 11 in the fourth drive assembly 104 rotates, and drives the bevel gear 16 to rotate through the reducer 12, thereby driving the seventh type rack flexible shaft 27 meshing with it to slide in the flexible shaft channels in the longitudinal slide rail 228 and the transverse slide rail 227. At this time, the first drive assembly 101, the second drive assembly 102 and the third drive assembly 103 are not working, and the longitudinal slider does not move. The seventh type rack flexible shaft 27 drives the transverse slider 214 to move on the transverse slide rail 227, thereby driving the first rotating rod 224 and the second rotating rod 225 to rotate relative to each other, and the second rotating rod 225 and the third rotating rod 226 to slide relative to each other in a straight line. The third rotating rod 226 drives the display screen mounting frame 3 to flip and swing under the transmission of the connecting rod 224, with the central axis of the T-shaped frame 222 mounting hole 3 as the rotating axis, thereby realizing the left and right flipping of the display screen 4, as shown in Figure 7(c).

[0073] Preferably, the longitudinal slide rail 228 is provided with multiple longitudinal flexible shaft channels, multiple longitudinal slider slides and mounting holes. The longitudinal slide rail is fixed to the car roof through the mounting holes and mounting screws. The longitudinal flexible shaft channels are mainly used to limit the movement of the flexible shaft to prevent it from bending, thereby improving the movement accuracy.

[0074] The controller of the motor 11 uses a Hall switch, which can accurately detect current changes and feed back signals to the motor to achieve stable stopping and starting of the motor.

[0075] Preferably, the rack-like flexible shaft can be appropriately bent and the shaft portion can be flocked to reduce vibration, reduce noise and increase friction.

[0076] Preferably, both ends of the longitudinal slide rail 228 and the transverse slide rail 227 are provided with end covers to limit the slider and prevent the slider from sliding out.

[0077] Preferably, the longitudinal slide rail 228 and the transverse slide rail 227 are made of ABS or alloy material and can be installed on the roof of any vehicle model to achieve any curvature that fits the ceiling.

[0078] If only the front-to-back translation and front-to-back flipping functions are required to be realized by the present invention, the connecting rod 223, the T-bar 222, the rotating rod, the transverse slide rail 227, the transverse slider 214, the fifth type rack flexible shaft 25, the sixth type rack flexible shaft 26, the seventh type rack flexible shaft 27, the third drive assembly 103 and the fourth drive assembly 104 are removed, and then the third mounting hole 33 and the fourth mounting hole 34 of the screen mounting frame 3 are respectively rotatably connected to the first rotating arm 215 and the second rotating arm 216 through the rotating shaft 219, and the fifth mounting hole 35 and the sixth mounting hole 36 of the screen mounting frame 3 are respectively fixedly connected to the third rotating arm 217 and the fourth rotating arm 218 through the rotating shaft 219. By controlling the movement amount of the first longitudinal slider 28, the third longitudinal slider 210, the second longitudinal slider 29 and the fourth longitudinal slider 211, the front-to-back translation, front-to-back flipping and positioning of the screen can be realized.

[0079] The present invention utilizes a motor in a drive assembly as the driving force. This power is transmitted to the first and second rotating arms, T-shaped brackets, connecting rods, and display mounting bracket via the transmission assembly's rack-like flexible shaft and longitudinal sliders on the longitudinal rails. Controlling the movement of the longitudinal sliders on the longitudinal rails enables forward and backward translation and flipping of the display screen. Power is transmitted to the rotating rod and display mounting bracket via the transmission assembly's rack-like flexible shaft and transverse sliders on the transverse rails. Controlling the transverse movement of the transverse sliders on the transverse rails enables left and right flipping of the display screen. The transmission assembly utilizes rack-and-pinion transmission technology, allowing it to simultaneously drive single or dual rack-like flexible shafts, depending on design requirements. The rack-like shafts are contained within a flexible conduit, reducing friction during movement. The motor's rotation drives the rack-like flexible shafts, which slide within the conduit, thereby driving the sliders, rotating arms, connecting rods, and display mounting bracket, enabling forward and backward translation, front-to-back flipping, and left-to-right flipping of the display screen, allowing it to be maintained at any desired angle and position. The slide rail is made of ABS or alloy material, and the processing method is injection molding or sheet metal. It can adapt to the roof of any car model and achieve any curvature that fits the car roof.

[0080] The present invention has a simple structure, is easy to install, has stable transmission, is maintenance-free, and is noiseless. The screen can be positioned in multiple dimensions and at different positions, which can fully meet the needs of different users and is extremely practical and novel.

[0081] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various simplifications, modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A car roof display screen device with two rotations and one movement, characterized in that: It includes a drive assembly, a transmission assembly and a display screen mounting frame. The drive assembly includes a first drive assembly, a second drive assembly, a third drive assembly and a fourth drive assembly of the same structure, each drive assembly includes a motor, a reducer and a gear meshing device, the gear meshing device includes a spur gear and a helical gear, the spur gear is meshed with the helical gear, the motor is fixedly connected to the reducer, and the output shaft of the reducer is keyed to the spur gear; The transmission assembly includes a longitudinal slide rail, a transverse slide rail, a longitudinal slider, a transverse slider, a rack-like flexible shaft, a rotating rod, a rotating arm, a rotating shaft, a T-shaped frame and a connecting rod; the longitudinal slider is slidably arranged in the longitudinal slide rails on both sides; the two ends of the transverse slide rail are fixedly connected to the longitudinal slider, and the transverse slider is slidably arranged in the transverse slide rail; the rack-like flexible shaft includes a first-class rack flexible shaft, a second-class rack flexible shaft, a third-class rack flexible shaft, a fourth-class rack flexible shaft, a fifth-class rack flexible shaft, a sixth-class rack flexible shaft and a seventh-class rack flexible shaft, the first ends of the first-class rack flexible shaft and the second-class rack flexible shaft are meshed with the first driving assembly, the first ends of the third-class rack flexible shaft and the fourth-class rack flexible shaft are meshed with the second driving assembly, the first ends of the fifth-class rack flexible shaft and the sixth-class rack flexible shaft are meshed with the third driving assembly, and the first end of the seventh-class rack flexible shaft is meshed with the fourth driving assembly The second end of the first type rack flexible shaft, the second type rack flexible shaft, the third type rack flexible shaft, the fourth type rack flexible shaft, the fifth type rack flexible shaft, and the sixth type rack flexible shaft all penetrate into the longitudinal slide rail and are connected to the corresponding longitudinal slider. The second end of the seventh type rack flexible shaft sequentially passes through the longitudinal slide rail, the corresponding longitudinal slider and the transverse slide rail and is fixedly connected to the transverse slider. The first end of the rotating arm is connected to the longitudinal slider through a rotating shaft. The second end of the rotating arm is respectively connected to the first end and the second end of the T-shaped frame, and the third end of the T-shaped frame is rotatably connected to the first end of the connecting rod. The second end of the connecting rod is rotatably connected to the longitudinal sides of the display screen mounting frame respectively. The upper end of the rotating rod is connected to the transverse slider, and the lower end of the rotating rod is connected to the transverse side of the display screen mounting frame. The motors in the first drive assembly, the second drive assembly, the third drive assembly, and the fourth drive assembly respectively drive the rack-like flexible shafts meshing therewith to move, and the rack-like flexible shafts drive the longitudinal sliders to move at the same speed and in the same direction on the longitudinal slide rails, thereby driving the rotating arm, the connecting rod, and the display screen mounting frame to move along the longitudinal slide rails at the same speed and in the same direction along the transverse slide rails, thereby achieving forward and backward movement of the display screen; The third and fourth drive assemblies stop working, and the motors in the first and second drive assemblies drive the rack-like flexible shafts meshing therewith to slide at a vector speed. The rack-like flexible shafts drive the longitudinal sliders to move at a vector speed on the longitudinal slide rails, and the rotating arms drive the T-shaped frame, the connecting rod, and the display screen mounting frame to rotate, thereby realizing the front and back flipping of the display screen. The first drive assembly, the second drive assembly and the third drive assembly stop working, the motor in the fourth drive assembly drives the rack flexible shaft engaged with it to slide in the longitudinal slide rail and the transverse slide rail, the rack-like flexible shaft drives the transverse slider to move on the transverse slide rail, and the rotating rod performs relative movement, driving the display screen mounting frame to realize the left and right flipping of the display screen under the transmission of the connecting rod.

2. The car ceiling display screen device with two rotations and one movement according to claim 1, characterized in that: The gear meshing device also includes a bottom plate, a top plate, a frustum, a pressure ring and a soft shaft limiting slide block, the bottom plate is installed on the outer disk of the output shaft of the reducer, the center of the bottom plate is provided with a flat gear mounting groove and a helical gear mounting groove, the flat gear is arranged in the flat gear mounting groove, the flat keyway provided on the flat gear is nested and matched with the flat key on the output shaft of the reducer; the helical gear can be rotatably embedded in the helical gear mounting groove and mesh with the external teeth of the frustum through its internal tooth groove; first positioning grooves for installing the soft shaft limiting slide block are symmetrically provided on both sides of the helical gear mounting groove; the pressure ring is nested in the end of the output shaft of the reducer and presses the helical gear, the frustum is fixedly connected to the end of the output shaft of the reducer on the outside of the pressure ring; the top plate is fixedly connected to the bottom plate on the outside of the frustum; semicircular soft shaft drive channels are provided on both sides of the opposite side of the bottom plate and the top plate, and a circular channel for the rack-like soft shaft to pass through is formed between the symmetrically arranged semicircular soft shaft drive channels and the first positioning groove, and the outer tooth pitch circle line of the helical gear is tangent to the circular channel.

3. The car ceiling display screen device with two rotations and one movement according to claim 2, characterized in that: A longitudinal slider slide and a longitudinal flexible shaft channel are provided in the longitudinal slide rail, the longitudinal slider slide includes a first longitudinal slider slide and a second longitudinal slider slide, the longitudinal flexible shaft channel includes a first longitudinal flexible shaft channel, a second longitudinal flexible shaft channel and a third longitudinal flexible shaft channel; a transverse slider slide and a transverse flexible shaft channel are provided in the transverse slide rail.

4. The car ceiling display screen device with two rotations and one movement according to claim 3, characterized in that: The longitudinal slider includes a first longitudinal slider, a second longitudinal slider, a third longitudinal slider, a fourth longitudinal slider, a fifth longitudinal slider and a sixth longitudinal slider. The first longitudinal slider and the second longitudinal slider, the third longitudinal slider and the fourth longitudinal slider are symmetrically installed in the first longitudinal slider slides of the longitudinal slide rails on both sides. The fifth longitudinal slider and the sixth longitudinal slider are symmetrically installed in the second longitudinal slider slides of the longitudinal slide rails on both sides, and the fifth longitudinal slider is provided with a fourth longitudinal soft shaft channel; the transverse slider is set as one piece and installed in the transverse slider slides.

5. The car ceiling display screen device with two rotations and one movement according to claim 4, characterized in that: The first type of rack flexible shaft and the second type of rack flexible shaft are arranged in pairs and respectively pass through the first longitudinal flexible shaft channel at the first end of the longitudinal slide rail and are fixedly connected to the first longitudinal slider and the third longitudinal slider respectively. The third type of rack flexible shaft and the fourth type of rack flexible shaft are arranged in pairs and respectively pass through the first longitudinal flexible shaft channel at the second end of the longitudinal slide rail and are fixedly connected to the second longitudinal slider and the fourth longitudinal slider respectively. The fifth type of rack flexible shaft and the sixth type of rack flexible shaft are arranged in pairs and respectively pass through the second longitudinal flexible shaft channel at the first end of the longitudinal slide rail and are fixedly connected to the fifth longitudinal slider and the sixth longitudinal slider respectively. A seventh type of rack flexible shaft passes through the third longitudinal flexible shaft channel at the first end of the longitudinal slide rail, and passes through the fourth longitudinal flexible shaft channel and the transverse slider slideway in sequence and is fixedly connected to the transverse slider.

6. The automobile ceiling display screen device with two rotations and one movement according to claim 2, characterized in that: A hose is further provided on the outside of the rack-like flexible shaft, and the hose is located between the longitudinal slide rail and the drive assembly. Second positioning grooves are provided at both ends of the circular channel. The first end of the hose is fixed in the second positioning groove. The rack-like flexible shaft passes through the hose and engages with the bevel gear. The second end of the hose is fixedly connected to the ends of the plurality of longitudinal flexible shaft channels respectively. The hose includes two sections of hose, and the two sections of hose are connected by a hose connector. The hose connector includes a threaded part, a nut part and a locking buckle. The threaded part and the nut part are respectively fixedly connected to one end of the two sections of hose and locked by the locking buckle.

7. The vehicle ceiling display screen device with two rotations and one movement according to claim 1, characterized in that: The rotating rod includes a first rotating rod, a second rotating rod and a third rotating rod, both ends of the first rotating rod are provided with mounting holes; the first end of the second rotating rod is provided with a mounting hole, and the second end of the second rotating rod is provided with a slide; the first end of the third rotating rod is provided with a slide groove, and the second end of the third rotating rod is provided with a mounting hole; the first end of the first rotating rod is rotatably connected to the transverse slider through a pin, the second end of the first rotating rod is rotatably connected to the first end of the second rotating rod through a pin, the slide at the second end of the second rotating rod is movably connected to the slide groove at the first end of the third rotating rod, and the second end of the third rotating rod is rotatably connected to the display screen mounting bracket through a pin.

8. The automobile ceiling display screen device with two rotations and one movement according to claim 4, characterized in that: The rotating arm includes a first rotating arm, a second rotating arm, a third rotating arm and a fourth rotating arm, the first ends of the first rotating arm, the second rotating arm, the third rotating arm and the fourth rotating arm are respectively fixedly connected to the second end of the rotating shaft, and the first ends of the rotating shaft are respectively rotatably connected to the first longitudinal slider, the second longitudinal slider, the third longitudinal slider and the fourth longitudinal slider; the second ends of the first rotating arm, the second rotating arm, the third rotating arm and the fourth rotating arm are all connected to the T-shaped frame; both ends of the rotating shaft are provided with shaft shoulders, the first end of the rotating shaft passes through multiple longitudinal sliders and is axially positioned by a shaft end retaining ring, and friction-resistant plates are provided between the multiple longitudinal sliders and the shaft shoulders and the shaft end retaining rings.

9. The automobile ceiling display screen device with two rotations and one movement according to claim 8, characterized in that: The first ends of the two T-shaped frames are rotatably connected to the first rotating arm and the second rotating arm respectively, the second ends of the two T-shaped frames are fixedly connected to the third rotating arm and the fourth rotating arm respectively, the third ends of the two T-shaped frames are rotatably connected to the first ends of the two connecting rods, and the second ends of the two connecting rods are rotatably connected to the display screen mounting frame.

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