Double-sided display screen device with knob plug-in electrical structure and combined screen

Abstract

A double-sided display device with a knob plug-in electrical structure and a combined screen, comprising a male seat connector, a female seat connector and a knob plug-in electrical structure, further comprising a box frame, the male seat connector and the female seat connector are installed on the opposite upper and lower edges or the opposite left and right edges of the box frame, the male seat connector and the female seat connector are configured to be connected to each other by the push of the knob plug-in electrical structure, so that when two adjacent double-sided display devices are spliced, the male seat connector and the female seat connector on the corresponding edges are electrically connected, the knob plug-in electrical structure drives the sliding plate to slide linearly along the sliding groove by rotating the knob, thereby realizing the quick plug-in of the male seat connector and the female seat connector, and the electrical connection can be completed by twisting operation, which has the characteristics of compact space and convenient operation, and is especially suitable for ultra-light and ultra-thin double-sided display devices.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display screen, in particular to a double-sided display screen device with knob plug-in electrical structure and a combined screen. BACKGROUND

[0002] In the current field of electronic display screen, double-sided display screen devices are widely used in advertising display, information publishing and other scenarios due to their double-sided display effect. However, the electrical connection structure in traditional double-sided display screen devices, especially in rental ultra-light and ultra-thin double-sided display screen devices, has many problems. Specifically, the traditional electrical connection structure usually adopts a push-pull plug-in or a press-in plug-in design. When implementing the connection, this kind of structure often requires a large hand movement space. For an ultra-light and ultra-thin double-sided display screen device, the internal space is extremely limited. The traditional electrical connection method is not only difficult to implement, but also easy to cause unstable connection or poor contact due to insufficient operation space. In addition, the traditional push-pull or press-in design often requires a large force and accurate alignment in actual operation, which is relatively cumbersome and has poor user experience. In view of the above problems, there is an urgent need for a double-sided display screen device with knob plug-in electrical structure and a combined screen to solve the above problems. SUMMARY

[0003] Therefore, a double-sided display screen device with knob plug-in electrical structure and a combined screen are provided, which are compact in space and convenient to operate.

[0004] A double-sided display screen device with knob plug-in electrical structure, comprising a male seat connector, a female seat connector and a knob plug-in electrical structure, further comprising a box frame, the male seat connector and the female seat connector are arranged on the opposite upper and lower edges or the opposite left and right edges of the box frame, the male seat connector and the female seat connector are configured to be connected to each other by the knob plug-in electrical structure, so that when two adjacent double-sided display screen devices are spliced, the male seat connector and the female seat connector on the corresponding edges are electrically connected.

[0005] The knob plug-in electrical structure comprises a fixed plate, a sliding plate, a rotating tab, a rotating seat and a knob connected to the rotating seat through a rotating shaft, the fixed plate has an inner surface and an outer surface, the rotating seat is rotatably connected to the fixed plate and penetrates the inner surface and the outer surface of the fixed plate, the inner surface of the fixed plate is provided with a sliding groove, the sliding plate is slidably connected to the sliding groove, one end of the rotating tab is movably connected to the sliding plate, and the other end of the rotating tab is movably connected to the one end of the rotating seat extending into the inner surface, one end of the sliding plate is connected to the male seat connector, by rotating the knob, the rotating seat drives the rotating tab to rotate and forces the sliding plate to slide along the sliding groove towards the female seat connector, thereby driving the male seat connector to move towards the female seat connector and plug in with the female seat connector.

[0006] Further, the knob plug-in electrical structure further comprises a stop elastic plunger bead, the slide plate is provided with a bead mounting groove on one side of the fixed plate, the stop elastic plunger bead comprises a plunger part and a bead part, the plunger part is mounted in the bead mounting groove, the bead part protrudes from the end face of the bead mounting groove, the fixed plate is provided with a first positioning hole and a second positioning hole above the first positioning hole, in the initial state, the stop elastic plunger bead is clamped with the first positioning hole, when the slide plate drives the male connector to move to the female connector and is plugged with the female connector, the stop elastic plunger bead synchronously follows the slide plate to move and is clamped with the second positioning hole; the distance between the first positioning hole and the second positioning hole is equal to the distance between the male connector and the female connector.

[0007] Further, the knob is provided with a first connecting hole, the rotating seat is provided with a second connecting hole corresponding to the first connecting hole on one side of the knob, the rotating shaft passes through the first connecting hole and the second connecting hole, one end of the rotating handle is provided with a third connecting hole, the other end is provided with a fourth connecting hole, the rotating seat is provided with a first connecting column connected with the third connecting hole on one side of the rotating handle corresponding to the third connecting hole, the slide plate is provided with a second connecting column connected with the fourth connecting hole on one side of the rotating handle corresponding to the fourth connecting hole, the slide plate is further provided with a fifth connecting hole, and the slide plate is connected with the male connector through the fifth connecting hole.

[0008] Further, the length direction of the sliding groove is consistent with the moving direction of the male connector to the female connector.

[0009] Further, the female connector comprises a female connector interface, the inner wall of the female connector interface is provided with a guide convex strip, the male connector comprises a male connector interface, the outer wall of the male connector interface is provided with a guide groove corresponding to the guide convex strip, when the male connector moves to the female connector, the guide convex strip and the guide groove can be embedded with each other to realize guide positioning.

[0010] Further, the double-sided display screen device further comprises a power module, the power module is arranged in the middle of the front of the box frame, one end of the male connector away from the female connector is electrically connected with the power module through an electric wire, and the other end of the female connector away from the male connector is provided with a wire access hole for accessing the electric wire of an external power supply.

[0011] Further, the double-sided display screen device further comprises a first circuit board and a second circuit board, the first circuit board and the second circuit board are respectively arranged in the middle of the front and back surfaces of the box frame, the middle of the box frame is further provided with an electronic connection hole, the first circuit board is electrically connected with the second circuit board through the electronic connection hole, and the first circuit board is electrically connected with the power module.

[0012] Further, the double-sided display screen device further comprises an up-down alignment locking assembly, a left-right alignment locking assembly and an auxiliary alignment magnetic piece, the up-down alignment locking assembly and the left-right alignment locking assembly are used for aligning and locking two adjacent box frames to make the male seat connector and the female seat connector accurately aligned, and the auxiliary alignment magnetic piece comprises a magnet and a magnetic body, the magnet and the magnetic body are respectively arranged on the opposite upper and lower edges or the opposite left and right edges of the box frame to be magnetically attracted to another box frame to assist alignment.

[0013] Further, the double-sided display screen device further comprises a display screen module, and the display screen module is mounted on the front and back surfaces of the box frame through the magnet.

[0014] A combined screen is formed by splicing two or more double-sided display screen devices, and the male seat connector can be connected with the female seat connector on the opposite upper and lower edges or the opposite left and right edges of another box frame through the knob plug-in electrical structure to electrically connect two adjacent double-sided display screen devices.

[0015] Compared with the prior art, the double-sided display screen device with the knob plug-in electrical structure has at least the following beneficial effects:

[0016] The double-sided display screen device with the knob plug-in electrical structure and the combined screen can realize quick plug-in of the male seat connector and the female seat connector by rotating the knob to drive the sliding plate to linearly slide along the sliding groove, and the electrical connection can be completed by twisting, without the need of pushing and pulling or pressing, so that the required activity space is extremely small and the operation is convenient, the problems of space limitation and complicated operation can be effectively solved, the operation mode is more labor-saving and alignment is simpler, the user does not need to visually align, the maintenance efficiency can be significantly improved, the user experience is good, and the double-sided display screen device is particularly suitable for ultra-light and ultra-thin double-sided display screen devices. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a three-dimensional structure schematic view of a double-sided display screen device with a knob plug-in electrical structure connected with a hanging beam according to an embodiment of the present application.

[0018] Figure 2 is a structure schematic view of a double-sided display screen device with a knob plug-in electrical structure according to an embodiment of the present application, in which a display screen module is removed.

[0019] Figure 3 is Figure 2A partial enlarged view of the middle A part.

[0020] Figure 4 is a structure schematic diagram of a female seat connector of a double-sided display screen device with a knob plug-in electrical structure according to an embodiment of the present application.

[0021] Figure 5 is a structure schematic diagram of a male seat connector of a double-sided display screen device with a knob plug-in electrical structure according to an embodiment of the present application.

[0022] Figure 6 is a structure schematic diagram of a knob plug-in electrical structure in an initial state of a double-sided display screen device with a knob plug-in electrical structure according to an embodiment of the present application.

[0023] Figure 7 is a structure schematic diagram of a knob plug-in electrical structure in a plug-in state of a double-sided display screen device with a knob plug-in electrical structure according to an embodiment of the present application.

[0024] Figure 8 is a structure exploded schematic diagram of a knob plug-in electrical structure of a double-sided display screen device with a knob plug-in electrical structure according to an embodiment of the present application.

[0025] Figure 9 is a structure exploded schematic diagram of a knob plug-in electrical structure of a double-sided display screen device with a knob plug-in electrical structure according to an embodiment of the present application.

[0026] Figure 10 is a structure exploded schematic diagram of an up-down alignment lock assembly of a double-sided display screen device with a knob plug-in electrical structure according to an embodiment of the present application.

[0027] Figure 11 is a structure schematic diagram of up-down splicing of a box frame of a double-sided display screen device of a combined screen and a box frame of another double-sided display screen device according to an embodiment of the present application.

[0028] in the figure,

[0029] 1. Male connector; 2. Female connector; 3. Fixing plate; 4. Slide plate; 5. Rotary lever; 6. Rotary seat; 7. Shaft; 8. Knob; 9. Slide groove; 10. Stopping elastic plunger glass ball; 11. Glass ball mounting groove; 12. Plunger part; 13. Glass ball part; 14. First positioning hole; 15. Second positioning hole; 16. First connecting hole; 17. Second connecting hole; 18. Third connecting hole; 19. Fourth connecting hole; 20. First 21. Connecting post; 22. Second connecting post; 23. Fifth connecting hole; 24. Guide protrusion; 25. Guide groove; 26. Box frame; 27. Lifting beam; 28. Power module; 29. ​​Display module; 30. Upper and lower alignment lock assembly; 31. Lock seat; 32. Locking element; 33. Mounting base; 34. Lock button; 35. Locking rod; 36. Lock head; 37. Strip-shaped limiting groove; 38. Limiting pin; 39. Auxiliary alignment magnetic component. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1 to 11 This illustration shows a double-sided display device with a knob-type plug-in electrical structure provided by an embodiment of the present invention. It includes a male connector 1, a female connector 2, and a knob-type plug-in electrical structure, and also includes a frame 25. The male connector 1 and the female connector 2 are mounted on opposite upper and lower edges or left and right edges of the frame 25. The male connector 1 and the female connector 2 are configured to be plugged into each other under the push of the knob-type plug-in electrical structure, so that when two adjacent double-sided display devices are spliced ​​together, they are electrically connected through the male connector 1 and the female connector 2 on the corresponding edges.

[0032] The knob-type electrical connection structure includes a fixed plate 3, a sliding plate 4, a rotating paddle 5, a rotating base 6, and a knob 8 connected to the rotating base 6 via a rotating shaft 7. The knob 8 is preferably a sheet-shaped knob for easy gripping. The fixed plate 3 has an inner surface and an outer surface. The rotating base 6 is rotatably connected to the fixed plate 3 and extends through the inner and outer surfaces of the fixed plate 3. The inner surface of the fixed plate 3 is provided with a groove 9. The sliding plate 4 is slidably connected to the groove 9. One end of the rotating paddle 5 is movably connected to the sliding plate 4, and the other end is movably connected to one end of the rotating base 6 that extends into the inner surface. One end of the sliding plate 4 is connected to the male connector 1. By rotating the knob 8, the rotating base 6 drives the rotating paddle 5 to rotate, forcing the sliding plate 4 to slide along the groove 9 towards the female connector 2, thereby driving the male connector 1 to move towards the female connector 2 and plug into the female connector 2.

[0033] In some specific embodiments, the double-sided display device further includes a hanging beam 26 installed on the upper part of the frame 25, the female connector 2 installed on the inner side wall of the hanging beam 26, the fixing plate 3 installed on the inner side wall of the frame 25, the bottom of the hanging beam 26 is provided with a first mounting through hole, and the top of the frame 25 is provided with a second mounting through hole. The first mounting through hole and the second mounting through hole correspond to and communicate with each other. The first mounting through hole is used to expose the female connector 2, and the second mounting through hole is used to expose the male connector 1, so that the male connector 1 can enter the first mounting through hole from the second mounting through hole and be inserted into the female connector 2.

[0034] Specifically, the knob plug-in electrical structure also includes a stop elastic plunger glass ball 10. The slide plate 4 has a glass ball mounting groove 11 on the side facing the fixing plate 3. The stop elastic plunger glass ball 10 includes a plunger part 12 and a glass ball part 13. The plunger part 12 is installed in the glass ball mounting groove 11, and the glass ball part 13 protrudes from the end face of the glass ball mounting groove 11. The fixing plate 3 has a first positioning hole 14 and a second positioning hole 15 located above the first positioning hole 14. In the initial state, the stop elastic plunger glass ball 10 is engaged with the first positioning hole 14. When the slide plate 4 drives the male connector 1 to move towards the female connector 2 and is inserted into the female connector 2, the stop elastic plunger glass ball 10 moves synchronously with the slide plate 4 and engages with the second positioning hole 15. The distance between the first positioning hole 14 and the second positioning hole 15 is equal to the distance between the male connector 1 and the female connector 2.

[0035] In some specific embodiments, the plunger portion 12 and the glass bead portion 13 are connected by an elastic element or the glass bead portion 13 is an elastic silicone body. When the slide plate 4 drives the stop elastic plunger glass bead 10 to move from the first positioning hole 14 to the second positioning hole 15, the glass bead portion 13 is pressed against the edge of the first positioning hole 14. Under the action of elastic force, the glass bead portion 13 retracts towards the plunger portion 12 and remains in a retracted state due to the continuous pressure of the slide plate 4 during the movement until the glass bead portion 13 enters the second positioning hole 15. After entering the second positioning hole 15, the glass bead portion 13 resets under the action of elastic force and is completely embedded in the second positioning hole 15. At this time, the friction generated by the close contact between the glass bead portion 13 and the hole wall can effectively prevent the slide plate 4 from continuing to slide to a certain extent. When the slide plate 4 drives the stop elastic plunger glass bead 10 to move from the second positioning hole 15 to the first positioning hole 14, the working principle of the stop elastic plunger glass bead 10 is the same and will not be described again. Understandably, the stop elastic plunger glass ball 10 switches between the first positioning hole 14 and the second positioning hole 15. The distance between the first positioning hole 14 and the second positioning hole 15 is the insertion stroke of the male connector 1. When the stop elastic plunger glass ball 10 is inserted into the second positioning hole 15, it can prevent the male connector 1 from continuing to move closer to the female connector 2 to avoid overpressure. When the stop elastic plunger glass ball 10 is inserted into the first positioning hole 14, it can prevent the male connector 1 from continuing to move away from the female connector 2 to avoid accidental contact or pull, which could lead to loosening, poor contact, or connection failure, thereby achieving bidirectional stop.

[0036] Specifically, the knob 8 is provided with a first connecting hole 16, the rotating base 6 is provided with a second connecting hole 17 on the side facing the knob 8 corresponding to the first connecting hole 16, the rotating shaft 7 passes through the first connecting hole 16 and the second connecting hole 17, one end of the rotating paddle 5 is provided with a third connecting hole 18, and the other end is provided with a fourth connecting hole 19, the rotating base 6 is provided with a first connecting post 20 connected to the third connecting hole 18 on the side facing the rotating paddle 5, the sliding plate 4 is provided with a second connecting post 21 connected to the fourth connecting hole 19 on the side facing the rotating paddle 5, and the sliding plate 4 is also provided with a fifth connecting hole 22, the sliding plate 4 is connected to the male connector 1 through the fifth connecting hole 22.

[0037] In some specific embodiments, when the knob 8 is rotated clockwise, the rotating seat 6 connected to the knob 8 via the rotating shaft 7 drives one end of the rotating paddle 5 to rotate, and the other end forces the slide plate 4 to slide along the slide groove 9 on the fixed plate 3 toward the female connector 2. The male connector 1 connected to the slide plate 4 simultaneously slides toward the female connector 2 to complete the insertion. At this time, the stop elastic plunger glass ball 10 is dislodged from the first positioning hole 14 and inserted into the second positioning hole 15. The friction between the glass ball part 13 and the hole wall achieves bidirectional stop to prevent overpressure or loosening. Similarly, when the knob 8 is rotated counterclockwise, the rotating paddle 5 drives the slide plate 4 to move back and pull out the male connector 1. The glass ball part 13 simultaneously switches back to the first positioning hole 14 to complete the disengagement.

[0038] Specifically, the length direction of the slide groove 9 is consistent with the direction in which the male connector 1 moves toward the female connector 2.

[0039] Specifically, the female connector 2 includes a female connector interface, and the inner wall of the female connector interface is provided with a guide protrusion 23. The male connector 1 includes a male connector interface, and the outer wall of the male connector interface is provided with a guide groove 24 corresponding to the guide protrusion 23. When the male connector 1 moves towards the female connector 2, the guide protrusion 23 and the guide groove 24 can engage with each other to achieve guiding and positioning. At the same time, the corresponding arrangement of the guide protrusion 23 and the guide groove 24 also serves as a foolproof function to prevent the male connector 1 from being inserted into the female connector 2 in reverse to ensure the correctness of the connection.

[0040] Specifically, the dual-sided display device further includes a power module 27, which is located in the middle of the front of the frame 25. The end of the male connector 1 away from the female connector 2 is electrically connected to the power module 27 via a wire. The end of the female connector 2 away from the male connector 1 is provided with a wire access hole for connecting an external power supply wire.

[0041] More specifically, the double-sided display device further includes a first circuit board and a second circuit board, which are respectively distributed in the middle of the front and back sides of the housing 25. The middle of the housing 25 is also provided with an electronic connection hole. The first circuit board is electrically connected to the second circuit board through the electronic connection hole, and the first circuit board is electrically connected to the power module 27. The power module 27 is used to supply power to each circuit board. After the male connector 1 and the female connector 2 are plugged in, the metal pins in the male connector 1 contact the metal slot pins in the female connector 2 to conduct the circuit.

[0042] Specifically, the double-sided display device further includes an upper and lower alignment locking assembly 29, a left and right alignment locking assembly, and an auxiliary alignment magnetic component 39. The upper and lower alignment locking assembly 29 and the left and right alignment locking assembly are used to align and lock two adjacent housing frames 25 so that the male connector 1 and the female connector 2 are accurately aligned. The auxiliary alignment magnetic component 39 includes a magnet and a magnetic attracting body. The magnet and the magnetic attracting body are respectively installed on the opposite upper and lower edges or left and right edges of the housing frame 25 so as to magnetically attract with the other housing frame 25 to assist in alignment.

[0043] In some specific embodiments, the upper and lower alignment lock assembly 29 includes a lock seat 30 and a lock member 31. The lock seat 30 includes a mounting base 32 with external threads, a lock button 33 with internal threads, and a lock body 34 with a square lock hole. The mounting base 32 is fixedly installed on the lifting beam 26. The mounting base 32 is threadedly connected to the lock button 33. The lock button 33 has a receiving groove, and the lock body 34 is installed in the receiving groove. The lock member 31 includes a lock rod 35 and a lock head 36 located at the front end of the lock rod 35. When the lock rod 35 is pushed upward, the lock head 36 passes through the square lock hole of the lock body 34 and rotates the lock button 33. The lock body 34 rotates accordingly and engages with the lock head 36, thereby locking the lock seat 30 and the lock member 31. The rear end of the lock rod 35 is threaded and locked to the frame 25 by a nut. More specifically, the locking rod 35 is provided with a strip-shaped limiting groove 37 in the middle, the double-sided display device also includes a limiting pin 38, the frame 25 is provided with a limiting screw hole, the limiting pin 38 is installed in the limiting screw hole and passes through the limiting screw hole to insert into the strip-shaped limiting groove 37 to limit the locking rod 35, so as to prevent the locking rod 35 from detaching from the frame 25 when the lock seat 30 and the lock 31 are not locked.

[0044] Specifically, the double-sided display device also includes a display module 28, which is mounted on both sides of the frame 25 by magnets.

[0045] A combination screen, wherein the combination screen is formed by splicing two or more of the above-mentioned double-sided display screen devices, wherein the male connector 1 can be connected to the female connector 2 on the opposite upper and lower edges or left and right edges of another frame 25 via the knob plug-in electrical structure to electrically connect two adjacent double-sided display screen devices. Figure 11The diagram shows two double-sided display screen units' housings 25 locked together vertically via an upper and lower alignment locking assembly 29 and an auxiliary alignment magnetic component 39. When the two double-sided display screen units' housings 25 are joined, they are electrically connected via male connector 1 and female connector 2 on their corresponding upper and lower edges. The same principle applies to joining two or more double-sided display screen units. The combined screen can also be formed by joining two or more of the aforementioned double-sided display screen units horizontally via a left and right alignment locking assembly and an auxiliary alignment magnetic component 39. In some other specific embodiments, the upper and lower alignment locking assembly 29 is also used to align and lock the housing 25 with the hanging beam 26. The magnet and the magnetic attractor are respectively mounted on the top of the housing 25 and the bottom of the hanging beam 26.

[0046] In summary, this double-sided display screen device and combination screen with a knob-operated electrical structure achieves rapid connection between the male connector 1 and the female connector 2 by rotating the knob 8 to drive the slide plate 4 to slide linearly along the slide groove 9. The electrical connection is completed simply by twisting, without the need for pushing, pulling, or pressing. It requires minimal space and is easy to operate, effectively solving the problems of space limitations and cumbersome operation. Furthermore, this operation method is more labor-saving and easier to align, eliminating the need for visual alignment and significantly improving maintenance efficiency. It provides a better user experience and is particularly suitable for ultra-light and ultra-thin double-sided display screen devices. Additionally, traditional structures lack effective protection against... Traditional designs are prone to misalignment during insertion, leading to interface damage or connection failure. This device, however, uses a guide protrusion 23 and a guide groove 24 to not only guide and position the device but also prevent misalignment, ensuring correct connection. Furthermore, traditional structures lack a stop design, which may cause damage to the interface due to excessive pressure during insertion or loosening of the connection due to accidental contact or pulling after insertion. This double-sided display device uses a stop elastic plunger glass ball 10 to achieve bidirectional stop, which can accurately control the insertion stroke and prevent damage or loosening due to excessive pressure, ensuring reliable connection.

[0047] It should be noted that the present invention is not limited to the above-described embodiments. Based on the inventive spirit of the present invention, those skilled in the art can make other changes, and these changes made in accordance with the inventive spirit of the present invention should be included within the scope of protection claimed by the present invention.

Claims

1. A double-sided display screen device with a knob-type plug-in electrical structure, characterized in that, The device includes a male connector, a female connector, and a knob-type electrical connection structure, as well as a housing frame. The male and female connectors are mounted on opposite upper and lower edges or left and right edges of the housing frame. The male and female connectors are configured to be able to plug into each other when pushed by the knob-type electrical connection structure, so that when two adjacent double-sided display screen devices are spliced ​​together, they are electrically connected through the male and female connectors on the corresponding edges. The knob-type electrical connection structure includes a fixed plate, a sliding plate, a rotating paddle, a rotating seat, and a knob connected to the rotating seat via a rotating shaft. The fixed plate has an inner surface and an outer surface. The rotating seat is rotatably connected to the fixed plate and extends through the inner and outer surfaces of the fixed plate. The inner surface of the fixed plate is provided with a groove. The sliding plate is slidably connected to the groove. One end of the rotating paddle is movably connected to the sliding plate, and the other end is movably connected to one end of the rotating seat that extends into the inner surface. One end of the sliding plate is connected to the male connector. By rotating the knob, the rotating seat drives the rotating paddle to rotate, forcing the sliding plate to slide along the groove toward the female connector, thereby driving the male connector to move toward the female connector and plug into the female connector. The knob has a first connecting hole, and the rotating base has a second connecting hole on the side facing the knob corresponding to the first connecting hole. The rotating shaft passes through the first connecting hole and the second connecting hole. One end of the rotating lever has a third connecting hole, and the other end has a fourth connecting hole. The rotating base has a first connecting post on the side facing the rotating lever corresponding to the third connecting hole, which is connected to the third connecting hole. The sliding plate has a second connecting post on the side facing the rotating lever corresponding to the fourth connecting hole, which is connected to the fourth connecting hole. The sliding plate also has a fifth connecting hole, and the sliding plate is connected to the male connector through the fifth connecting hole.

2. The double-sided display screen device with a knob-type plug-in electrical structure as described in claim 1, characterized in that, The knob-type electrical connection structure also includes a stop-locking elastic plunger glass ball. The slide plate has a glass ball mounting groove on the side facing the fixed plate. The stop-locking elastic plunger glass ball includes a plunger part and a glass ball part. The plunger part is installed in the glass ball mounting groove, and the glass ball part protrudes from the end face of the glass ball mounting groove. The fixed plate has a first positioning hole and a second positioning hole located above the first positioning hole. In the initial state, the stop-locking elastic plunger glass ball is engaged with the first positioning hole. When the slide plate moves the male connector towards the female connector to be inserted with the female connector, the stop-locking elastic plunger glass ball moves synchronously with the slide plate and engages with the second positioning hole. The distance between the first positioning hole and the second positioning hole is equal to the distance between the male connector and the female connector.

3. The double-sided display screen device with a knob-type plug-in electrical structure as described in claim 1, characterized in that, The length direction of the groove is consistent with the direction in which the male connector moves toward the female connector.

4. The double-sided display screen device with a knob-type plug-in electrical structure as described in claim 1, characterized in that, The female connector includes a female interface with a guide protrusion on the inner wall of the female interface. The male connector includes a male interface with a guide groove on the outer wall corresponding to the guide protrusion. When the male connector moves toward the female connector, the guide protrusion and the guide groove can engage with each other to achieve guiding and positioning. The metal pin in the male connector contacts the metal slot PIN in the female connector to conduct the circuit.

5. A double-sided display screen device with a knob-type plug-in electrical structure as described in claim 1, characterized in that, The double-sided display device also includes a power module, which is located in the middle of the front of the frame. The end of the male connector away from the female connector is electrically connected to the power module via a wire. The end of the female connector away from the male connector is provided with a wire inlet hole for connecting an external power supply wire.

6. A double-sided display screen device with a knob-type plug-in electrical structure as described in claim 5, characterized in that, The double-sided display device also includes a first circuit board and a second circuit board, which are respectively distributed in the middle of the front and back sides of the frame. The middle of the frame is also provided with an electronic connection hole. The first circuit board is electrically connected to the second circuit board through the electronic connection hole, and the first circuit board is electrically connected to the power module.

7. A double-sided display screen device with a knob-type plug-in electrical structure as described in claim 1, characterized in that, The double-sided display device further includes an upper and lower alignment locking assembly, a left and right alignment locking assembly, and an auxiliary alignment magnetic component. The upper and lower alignment locking assembly and the left and right alignment locking assembly are used to lock the two adjacent frames in alignment so that the male connector and the female connector are accurately aligned. The auxiliary alignment magnetic component includes a magnet and a magnetic attracting body. The magnet and the magnetic attracting body are respectively installed on the opposite upper and lower edges or left and right edges of the frame to magnetically attract the other frame for alignment.

8. A double-sided display screen device with a knob-type plug-in electrical structure as described in claim 1, characterized in that, The double-sided display device also includes a display module, which is mounted on both sides of the frame by magnets.

9. A combination screen, characterized in that, The combined screen is formed by splicing together two or more double-sided display screen devices as described in any one of claims 1 to 8. The male connector can be connected to the female connectors on the opposite upper and lower edges or left and right edges of another frame through the knob plugging electrical structure to electrically connect the two adjacent double-sided display screen devices.

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