Supporting device of display equipment

Abstract

The utility model provides a supporting device of display equipment, which comprises a horizontally arranged first rotating mechanism, a telescopic mechanism which is connected to one side of the first rotating mechanism and protrudes above the first rotating mechanism, and a second rotating mechanism which is connected to the outer side of the telescopic mechanism in parallel, the second rotating mechanism comprises a second rotating base connected with the display device, a third driving mechanism fixedly connected with the second rotating base and supporting the second rotating base to rotate and a charging device arranged on the second rotating base in a penetrating mode, and the outer side of the charging device makes contact with the display device. The supporting device of the display equipment is compact in structure and high in execution reliability, and a user can adjust the rotating angle of the display equipment located on the outer side of the telescopic mechanism and fixed to the second rotating base in the vertical direction according to requirements; meanwhile, the display device can be charged through the charging device of the supporting device.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary equipment for intelligent display equipment and discloses a supporting device for display equipment. Background Art

[0002] With the continuous development of electronic display device technology, the types of display devices are becoming more and more numerous. In daily use, a mounting bracket is often needed to place the display device. However, the existing mounting brackets are mostly one-piece structures, which can only play a fixing role and do not have corresponding adjustment functions, and cannot meet the needs of users. Therefore, in the actual use of the display device, there is an urgent need for a support device that can be adjusted horizontally or vertically according to the user's multiple angles of the display device. Utility Model Content

[0003] The purpose of the utility model is to provide a support device that is convenient for adjusting the vertical angle of a display device and realizing a charging function. The technical solution is as follows:

[0004] A support device for a display device comprises a first rotating mechanism arranged horizontally, a telescopic mechanism connected to one side of the first rotating mechanism and protruding above it, and a second rotating mechanism connected in parallel to the outside of the telescopic mechanism, wherein the second rotating mechanism comprises a second rotating seat connected to the display device, a third driving mechanism fixedly connected to and supporting the rotation of the second rotating seat, and a charging device penetrating the second rotating seat, wherein the outer side of the charging device contacts the display device.

[0005] Preferably, the telescopic mechanism includes a second mounting platform, a sliding platform mounted on the second mounting platform and telescopically sliding along the second mounting platform, and a second driving mechanism connected between the second mounting platform and the sliding platform; the sliding platform includes a second shell and a second cover body that are snapped together to form a second accommodating space; the second driving mechanism is provided with a second flexible circuit board that is electrically connected; the second driving mechanism and the third driving mechanism are placed in the second accommodating space.

[0006] Preferably, at least three mounting posts with second mounting holes are arranged on the inner surface of the second shell, a second through hole penetrating the second shell is arranged below the mounting posts, and an annular first mounting groove is protruded on the outer surface of the second shell at the periphery of the second through hole.

[0007] Preferably, the third driving mechanism includes a third driving motor, a third reducer, a third transmission mechanism and a third output mechanism in sequence; the third driving motor is provided with a third flexible circuit board connected to electricity; the third transmission mechanism includes a third bracket which is overall in the shape of a square frame, a third screw rod and a third guide rod which are arranged in parallel and spaced apart in the third bracket, and a third sliding rack which is simultaneously sleeved on the third screw rod and the third guide rod; the third driving motor, the third reducer and the third screw rod are coaxially arranged; the third output mechanism includes a third output rotating frame and a third ball bearing and a third output gear which are sleeved on the third output rotating frame at intervals; the third sliding rack is meshed with the third output gear.

[0008] Preferably, the third output rotating frame includes a hollow cylindrical bearing fixing portion, a gear fixing portion integrally connected with the bearing fixing portion, a flange located between the bearing fixing portion and the gear fixing portion and protruding from the outer peripheral surface of the bearing fixing portion, and a first limit platform between the bearing fixing portion and the flange and protruding from the outer peripheral surface of the bearing fixing portion; the free end of the bearing fixing portion is provided with a third incision connected with the hollow portion thereof; the flange is provided with at least three second screw holes; the third ball bearing includes an inner ring and an outer ring, the inner ring is fixedly sleeved on the bearing fixing portion, and the outer ring is fixedly embedded in the first mounting groove.

[0009] Preferably, a third mounting hole is protruding from the periphery of the third bracket corresponding to the second mounting hole; the third sliding rack is in a "T" shape, including a third fixing part and a third rack, and the third fixing part is provided with a third threaded hole and a third through hole and are respectively and simultaneously mounted on the third screw rod and the third guide rod.

[0010] Preferably, the second rotating seat is a square shell with an open end, including a bottom wall and a side wall, the outer surface of the bottom wall is provided with a positioning groove, the central position of the inner surface of the bottom wall is adapted to provide a second annular mounting groove corresponding to the bearing fixing portion, and a limiting ring is concentrically provided on the outer side of the second mounting groove; a second limiting platform is provided in the second mounting groove, the second mounting groove is provided with a first incision corresponding to the third incision, the limiting ring is provided with a second incision corresponding to the first incision, a first through hole penetrating the bottom wall is provided on one side corresponding to the second incision, and the charging device is embedded in the first through hole.

[0011] Preferably, a fourth flexible circuit board is connected to the inner side of the charging device.

[0012] Preferably, the first rotating mechanism includes a first mounting platform, a first rotating seat connected to the central position of the lower surface of the first mounting platform and rotatable, a first driving mechanism and a control circuit board of an external power supply arranged in the first mounting platform, and an electrical connector for an external power supply arranged on the first mounting platform or the first rotating seat and electrically connected to the control circuit board, the first rotating seat and the first mounting platform are connected and supported to rotate by the first driving mechanism; the first driving mechanism is provided with a first flexible circuit board connected to electricity.

[0013] Preferably, the first, second, third and fourth flexible circuit boards are electrically connected to the control circuit board respectively.

[0014] Compared with the prior art, the support device of a display device of the utility model has a compact structure and high execution reliability. The user can adjust the vertical rotation angle of the display device fixed on the second rotating seat outside the telescopic mechanism according to needs; at the same time, the display device can be charged by the charging device of the support device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an assembly stereogram of the display device and the supporting device.

[0016] Figure 2 It is an assembly stereogram of the support device.

[0017] Figure 3 It is a structural exploded diagram of the support device.

[0018] Figure 4 It is a structural explosion diagram of the second rotating mechanism.

[0019] Figure 5 is a perspective view of the second shell.

[0020] Figure 6 It is a structural explosion diagram of the second rotating seat and the third driving mechanism.

[0021] Figure 7 It is a structural explosion diagram of the third drive mechanism.

[0022] Figure 8 It is a three-dimensional diagram of the third output rotating frame.

[0023] Fig. 9 is a cross-sectional view of the third output rotating frame.

[0024] Fig.10 It is a cross-sectional view of the second rotating seat.

[0025] Fig.11 yes Figure 2 sectional view of .

[0026] Fig.12 yes Fig.11 An enlarged view of point A in the figure, in which shading is added to clearly show the components.

[0027] in:

[0028] 100-support device; 200-display device;

[0029] 1000-first rotating mechanism; 2000-telescopic mechanism; 3000-second rotating mechanism;

[0030] 4000-third transmission mechanism; 5000-third output mechanism;

[0031] 1-first mounting station; 11-electrical connector;

[0032] 2-first rotating seat; 22-first driving mechanism; 220-first flexible circuit board; 23-control circuit board;

[0033] 3-second mounting platform; 32-second driving mechanism; 320-second flexible circuit board;

[0034] 4-sliding platform; 40-second housing; 41-second cover; 403-mounting column; 4030-second mounting hole;

[0035] 400 - second through hole; 401 - first mounting slot; 42 - third driving mechanism; 420 - third driving motor;

[0036] 4200 - third flexible circuit board; 421 - third reducer; 422 - third bracket; 4220 - third mounting hole;

[0037] 423 - third screw rod; 424 - third guide rod; 425 - third sliding rack; 4250 - third fixing part;

[0038] 4251 - third rack; 4252 - third threaded hole; 4253 - third through hole; 426 - third output rotating frame;

[0039] 4260-gear fixing part; 4261-flange; 4262-bearing fixing part; 4263-third incision;

[0040] 4264 - second screw hole; 4265 - first limit platform; 427 - third output gear; 4270 - first screw hole;

[0041] 428-third ball bearing;

[0042] 5-second rotating seat; 50-bottom wall; 51-side wall; 52-positioning groove; 53-first through hole; 54-charging device;

[0043] 55-limiting ring; 550-first incision; 56-second mounting groove; 560-second incision;

[0044] 561-second limiter;

[0045] 6. 6'-Switch button. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] The structure of a supporting device 100 of a display device 200 of the present invention is as follows Figures 1 to 12 , including a first rotating mechanism 1000 arranged horizontally, a telescopic mechanism 2000 connected to one side of the first rotating mechanism 1000 and protruding above it, a second rotating mechanism 3000 connected in parallel to the outside of the telescopic mechanism 2000, and a charging device 54 arranged on the second rotating mechanism 3000, and the charging device 54 is in contact with the display device 200. The first rotating mechanism 1000 realizes the rotation of the display device 200 in the horizontal direction; the telescopic mechanism 2000 realizes the lifting and lowering of the display device 200 in the vertical direction; the second rotating mechanism 3000 realizes the rotation of the display device 200 in the vertical direction; and the charging device 54 realizes the charging function of the display device 200.

[0048] The first rotating mechanism 1000 includes a first mounting platform 2 having a first accommodation space (not shown), a first rotating seat 1 connected to the central position of the outer surface below the first mounting platform 2 and rotatable, a first driving mechanism 22 and a control circuit board 23 for an external power source disposed in the first accommodation space, and an electrical connector 11 for an external power source disposed on the first mounting platform 2 or the first rotating seat 1 and electrically connected to the control circuit board 23, wherein the first driving mechanism 22 and the electrical connector 11 are electrically connected to the control circuit board 23 respectively, and the first rotating seat 1 and the first mounting platform 2 are connected and supported to rotate relative to each other through the first driving mechanism 22. Among them, the first driving mechanism 22 is provided with a first flexible circuit board 220 connected to electricity, and the first flexible circuit board 220 is electrically connected to the control circuit board 23.

[0049] The telescopic mechanism 2000 includes a second mounting platform 3 provided on one side of the first mounting platform 2 and protruding above the first mounting platform 2, a sliding platform 4 sleeved above the second mounting platform 3 and telescopically sliding along the second mounting platform 3, and a second driving mechanism 32 connected between the second mounting platform 3 and the sliding platform 4. The second driving mechanism 32 is provided with a second flexible circuit board 4200 connected to electricity, and the second flexible circuit board 4200 is electrically connected to the control circuit board 23. Preferably, the first mounting platform 2 and the second mounting platform 3 are hingedly arranged so that the angle between the two can be adjusted to achieve the adjustment of the front and rear position of the display device 200.

[0050] The second rotating mechanism 3000 includes a second rotating seat 5 connected to the display device 200, and a third driving mechanism 42 fixedly connected to and supporting the rotation of the second rotating seat 5. The third driving mechanism 42 is provided with a third flexible circuit board 320 connected to electricity, and a charging device 54 is provided through the second rotating seat 5. The charging device 54 is connected to a fourth flexible circuit board (not shown), and the fourth flexible circuit board and the third flexible circuit board 320 are electrically connected to the control circuit board 23 respectively.

[0051] The sliding platform 4 includes a second shell 40 and a second cover 41 which are buckled to form a second accommodation space (not shown), and the second driving mechanism 32 and the third driving mechanism 42 are respectively fixed to the inner surface of the second shell 40 and placed in the second accommodation space. At least three mounting posts 403 with second mounting holes 4030 are arranged on the inner surface of the second shell 40, a second through hole 400 penetrating the second shell 40 is arranged at the central position of the second shell 40, three mounting posts 403 are located above the second through hole 400, the second through hole 400 is located at the central position of the second shell 40, and an annular first mounting groove 401 is convexly arranged on the outer surface of the second shell 40 at the periphery of the second through hole 400.

[0052] The third driving mechanism 42 includes a third driving motor 420, a third reducer 421, a third transmission mechanism 4000 and a third output mechanism 5000. The third driving motor 420 is provided with a third flexible circuit board 4200 connected to electricity.

[0053] The third transmission mechanism 4000 includes a third bracket 422 in a square frame shape, a third screw rod 423 and a third guide rod 424 arranged in parallel and spaced apart in the third bracket 422, and a third sliding rack 425 sleeved on the third screw rod 423 and the third guide rod 424. The third screw rod 423 is screwed with the third sliding rack 425, the third screw rod 423 is used to drive the third sliding rack 425 to slide back and forth, and the third guide rod 424 is used to guide the third sliding rack 425 to ensure the stability of the third sliding rack 425 during the reciprocating sliding process; the third driving motor 420, the third reducer 421 and the third screw rod 423 are coaxially arranged to achieve stable transmission of the torque of the third transmission mechanism 4000.

[0054] The third output mechanism 5000 includes a third output rotating frame 426, a third ball bearing 428 and a third output gear 427 which are sleeved on the third output rotating frame 426 at intervals. The third output rotating frame 426 includes a cylindrical hollow (not shown) bearing fixing portion 4262, a gear fixing portion 4260 which is integrally connected to and concentrically arranged with the bearing fixing portion 4262, and a flange 4261 which is located between the bearing fixing portion 4262 and the gear fixing portion 4260 and is protruded on the outer circumference; the bearing fixing portion 4262 is provided with a third notch 4263 which is connected to the hollow portion thereof; the third sliding rack 425 is meshed with the third output gear 427, and the third output gear 427 is driven to rotate by the reciprocating sliding of the third sliding rack 425; at least three first screw holes 4270 which penetrate the thickness of the third output gear 427 are evenly arranged on the third output gear 427, and the flange 4261 is provided with a third notch 4263 which is connected to the hollow portion thereof; A second screw hole 4264 is provided corresponding to the first screw hole 4270. The third output gear 427 is firstly sleeved on the gear fixing portion 4260 to realize the pre-positioning of the third output gear 427 and the flange 4261. Then, the third output gear 427 is connected and fixed to the flange 4261 by screws (not shown) in the first screw hole 4270 and the second screw hole 4264, thereby fixing the third output gear 427 on the third output rotating frame 426. The height of the gear fixing portion 4260 is less than or equal to the thickness of the third output gear 427. The thickness of the third output gear 427 is less than the thickness of the third rack 4251. The second cover body 41 is arranged at intervals so that the third output gear 427 will not generate friction and noise with the second cover body 41 when rotating; a first limit platform 4265 is convexly provided on the outer periphery of the bearing fixing portion 4262 at the junction of the bearing fixing portion 4262 and the flange 42611; the outer diameter of the first limit platform 4265 is smaller than the inner diameter of the second through hole 400 to ensure that there is a first gap (not marked) between the first limit platform 4265 and the second through hole 400 to prevent the third output rotating frame 426 from generating friction and noise with the second through hole 400 during the rotation process, and the inner diameter of the second through hole 400 is smaller than the inner diameter of the first mounting groove 401, so that the first mounting groove 401 and the second through hole 400 are not connected. An L-shaped fixing portion (not marked) is formed between the second through holes 400; the third ball bearing 428 includes an inner ring (not marked) and an outer ring (not marked), the inner ring (not marked) of the third ball bearing 428 is fixedly sleeved on the bearing fixing portion 4262 and is limitedly supported on the free end surface of the first limit platform 4265, the outer ring (not marked) of the third ball bearing 428 is fixedly embedded in the first mounting groove 401 and is abutted against the L-shaped step portion, so that the inner ring of the third ball bearing 428 is fixedly connected to the third output rotating frame 426, and the outer ring of the third ball bearing 428 is fixedly connected to the second shell 40, thereby realizing the rotation of the second rotating seat 5 relative to the sliding table 4.A boss (not shown) having a third mounting hole 4220 is protruded from the periphery of the third bracket 422 corresponding to the second mounting hole 4030; the third sliding rack 425 is in a "T" shape, including a third fixing portion 4250 and a third rack 4251, and the third fixing portion 4250 is provided with a third threaded hole 4252 and a third through hole 4253 and are respectively and simultaneously mounted on the third screw rod 423 and the third guide rod 424.

[0055] The second rotating seat 5 is a square shell (not marked) with an open end, including a bottom wall 50 and a side wall 51. The outer surface of the bottom wall 50 is provided with a positioning groove 52; the positioning groove 52 is used for pre-positioning and limiting the display device 200 connected and fixed on the second rotating seat 5; the central position of the inner surface of the bottom wall 50 corresponds to the bearing fixing part 4262 to adapt a convex annular second mounting groove 56, the free end surface of the second mounting groove 56 abuts against the inner ring of the third ball bearing 428, and a second limiting platform 561 is provided in the second mounting groove 56, the height of the second limiting platform 5611 is less than the height of the second mounting groove 56, and the outer diameter of the second limiting platform 5611 is less than the second The inner diameter of the mounting groove 56 makes the free end surface of the bearing fixing portion 4262 abut against the second limiting platform 5611 to set the depth of the bearing fixing portion 4262 inserted into the second mounting groove 56; the third output rotating frame 426 is fixedly connected to the second rotating seat 5 through the bearing fixing portion 4262; a limiting ring 55 is concentrically convexly provided on the outer side of the second mounting groove 56, and a second gap (not marked) is provided between the free end surface of the limiting ring 55 and the outer surface of the second shell 40 to avoid friction between the second rotating seat 5 and the second shell 40 when the second rotating seat 5 is driven to rotate by the third driving mechanism 42, and the second rotating seat 5 can be detected through the second gap. The parallelism between the second rotating seat 5 and the second shell 40 is ensured to be more stable when the second rotating seat 5 is driven to rotate by the third driving mechanism 42; the limiting ring 55 is adapted to set the first cutout 550 corresponding to the third cutout 4263, and the second mounting groove 56 is adapted to set the second cutout 560 corresponding to the first cutout 550; a first through hole 53 penetrating the bottom wall 50 is provided on the edge of the bottom wall 50 on one side corresponding to the first cutout 550, and the charging device 54 is embedded in the first through hole 53, the outer side of the charging device 54 is in contact with the display device 200, and the inner side is connected with a fourth flexible circuit board (not shown), and the fourth flexible circuit board penetrates the third driving mechanism 42 from the second rotating seat 5 The fourth flexible circuit board enters the hollow of the third output rotating frame 426 from the second incision 560 and the first incision 550 via the third incision 4263, and then extends from the hollow of the gear fixing portion 4260 and enters the second accommodating space, extends along the second gap between the second cover body 41 and the third output gear 427, and enters the first accommodating space of the first mounting platform 2 through the second mounting platform 3 together with the second flexible circuit board 4200 and the third flexible circuit board 320, and is electrically connected to the control circuit board 23.

[0056] The assembly steps of the second rotating mechanism 3000 are as follows:

[0057] First, the third driving mechanism 42 is fixed to the second housing 40 by inserting screws (not shown) into the third mounting hole 4220 of the third bracket 422 corresponding to the second mounting hole 4030 of the second housing 40;

[0058] Secondly, the third output gear 427 is fixed to the third output rotating frame 426 by screws (not shown);

[0059] Next, after the bearing fixing portion 4262 passes through the second through hole 400, the inner ring of the third ball bearing 428 is interference fit on the bearing fixing portion 4262, while the outer ring is interference fit into the first mounting groove 401; the inner ring end surface of the third ball bearing 428 facing the third output gear 427 is abutted against the first limit platform 4265, while the outer ring abuts against the L-shaped stepped portion, at this time, the third output gear 427 is meshed with the third sliding rack 425;

[0060] Finally, the bearing fixing portion 4262 is interference inserted into the second mounting groove 56 of the second rotating seat 5 until the bearing fixing portion 4262 abuts against the second limit platform 561 and the inner ring end face of the third ball bearing 428 facing the side of the second rotating seat 5 abuts against the second mounting groove 56, thereby fixing the second rotating seat 5 on the third output rotating frame 426.

[0061] The working principle of the second rotating mechanism 3000 is: the third drive motor 420 is connected to electricity, so that the third drive motor 420 rotates and drives the third reducer 421 to output torque, and the third sliding rack 425 of the third transmission mechanism 4000 is engaged with the third output gear 427 of the third output mechanism 5000 to transmit the torque output by the third reducer 421 to the third output rotating frame 426, thereby realizing the rotation of the second rotating seat 5 fixedly connected to the third output rotating frame 426 relative to the sliding table 4.

[0062] In order to ensure the stability of torque transmission of the second rotating mechanism 3000, glue (not shown) can be applied in advance on the contact surface between the second mounting groove 56 of the second rotating seat 5 and the bearing fixing part 4262 of the third output rotating frame 426, glue can be applied on the contact surface between the bearing fixing part 4262 and the inner ring of the third ball bearing 428, and glue can be applied on the contact surface between the first mounting groove 401 and the outer ring of the third ball bearing 428.

[0063] The first flexible circuit board 220, the second flexible circuit board 4200, the third flexible circuit board 320 and the fourth flexible circuit board are electrically connected to the control circuit board 23, respectively, and then powered on through the electrical connector 11 electrically connected to the control circuit board 23 and connected to the external power supply; the first flexible circuit board 220, the second flexible circuit board 4200, the third flexible circuit board 320, the fourth flexible circuit board and the control circuit board 23 are all arranged inside the support device 100, making full use of the internal space of the support device 100, so that the structure of the support device 100 is more compact; at least two switch buttons 6, 6' are embedded on the edge of the first mounting platform 2 and are electrically connected to the control circuit board 23. By pressing the switch buttons 6, 6', the first flexible circuit board 220, the second flexible circuit board 3200, the third flexible circuit board 320 and the fourth flexible circuit board electrically connected to the control circuit board 23 can be connected or closed respectively, so as to realize the control of the first driving mechanism 22, the second driving mechanism 32 and the third driving mechanism 42 to be powered on and the charging device 54 to charge the real device 200.

[0064] It should be noted that, in the description of the present invention, the terms "up", "down", "front", "back", "left", "horizontal direction", "vertical direction" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A support device for a display device, comprising a first rotating mechanism arranged horizontally, a telescopic mechanism connected to one side of the first rotating mechanism and protruding above the first rotating mechanism, and a second rotating mechanism connected in parallel to the outer side of the telescopic mechanism, characterized in that: The second rotating mechanism includes a second rotating seat connected to the display device, a third driving mechanism fixedly connected to and supporting the second rotating seat for rotation, and a charging device penetrating the second rotating seat, wherein the outer side of the charging device contacts the display device.

2. A supporting device for a display device according to claim 1, characterized in that: The telescopic mechanism includes a second mounting platform, a sliding platform mounted on the second mounting platform and telescopically sliding along the second mounting platform, and a second driving mechanism connected between the second mounting platform and the sliding platform; the sliding platform includes a second shell and a second cover body that are buckled to form a second accommodating space; the second driving mechanism is provided with a second flexible circuit board connected to electricity; the second driving mechanism and the third driving mechanism are placed in the second accommodating space.

3. The supporting device of a display device according to claim 2, characterized in that: At least three mounting posts with second mounting holes are arranged on the inner surface of the second shell, a second through hole penetrating the second shell is arranged below the mounting posts, and an annular first mounting groove is protruded on the outer surface of the second shell at the periphery of the second through hole.

4. The supporting device of a display device according to claim 3, characterized in that: The third driving mechanism includes a third driving motor, a third reducer, a third transmission mechanism and a third output mechanism in sequence; the third driving motor is provided with a third flexible circuit board connected to electricity; the third transmission mechanism includes a third bracket in the shape of a square frame as a whole, a third screw rod and a third guide rod arranged in parallel and spaced apart in the third bracket, and a third sliding rack simultaneously sleeved on the third screw rod and the third guide rod; the third driving motor, the third reducer and the third screw rod are coaxially arranged; the third output mechanism includes a third output rotating frame and a third ball bearing and a third output gear sleeved on the third output rotating frame at intervals; the third sliding rack is meshed with the third output gear.

5. The supporting device of a display device according to claim 4, characterized in that: The third output rotating frame includes a cylindrical hollow bearing fixing part, a gear fixing part integrally connected with the bearing fixing part, a flange located between the bearing fixing part and the gear fixing part and protruding from the outer peripheral surface of the bearing fixing part, and a first limit platform between the bearing fixing part and the flange and protruding from the outer peripheral surface of the bearing fixing part; the free end of the bearing fixing part is provided with a third incision connected with the hollow part; the flange is provided with at least three second screw holes; the third ball bearing includes an inner ring and an outer ring, the inner ring is fixedly sleeved on the bearing fixing part, and the outer ring is fixedly embedded in the first mounting groove.

6. The supporting device of a display device according to claim 5, characterized in that: A third mounting hole is protruded from the periphery of the third bracket corresponding to the second mounting hole; the third sliding rack is in a "T" shape, including a third fixing portion and a third rack, and the third fixing portion is provided with a third threaded hole and a third through hole and are respectively and simultaneously mounted on the third screw rod and the third guide rod.

7. The supporting device of a display device according to claim 6, characterized in that: The second rotating seat is a square shell with an open end, including a bottom wall and a side wall. The outer surface of the bottom wall is provided with a positioning groove, and the central position of the inner surface of the bottom wall corresponds to the bearing fixing part to provide a ring-shaped second mounting groove, and a limiting ring is concentrically provided on the outer side of the second mounting groove; a second limiting platform is provided in the second mounting groove, and a first incision is provided in the second mounting groove corresponding to the third incision; a second incision is provided in the limiting ring corresponding to the first incision, and a first through hole penetrating the bottom wall is provided on the side corresponding to the second incision, and the charging device is embedded in the first through hole.

8. The supporting device of a display device according to claim 7, characterized in that: A fourth flexible circuit board is connected to the inner side of the charging device.

9. The supporting device of a display device according to claim 8, characterized in that: The first rotating mechanism includes a first mounting platform, a first rotating seat connected to the central position of the lower surface of the first mounting platform and rotatable, a first driving mechanism and a control circuit board of an external power supply arranged in the first mounting platform, and an electrical connector for an external power supply arranged on the first mounting platform or the first rotating seat and electrically connected to the control circuit board. The first rotating seat and the first mounting platform are connected and supported to rotate by the first driving mechanism; the first driving mechanism is provided with a first flexible circuit board connected to electricity.

10. A supporting device for a display device according to claim 9, characterized in that: The first, second, third and fourth flexible circuit boards are electrically connected to the control circuit board respectively.

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