Foldable flexible screen device

Abstract

The invention discloses foldable flexible screen equipment which comprises a first middle frame, a second middle frame, a long-strip-shaped middle supporting plate arranged between the first middle frame and the second middle frame, a first transmission rod and a second transmission rod, wherein the first transmission rod and the second transmission rod are installed on the middle supporting plate and reversely extend towards the outer side of the middle supporting plate. Each of the first transmission rod and the second transmission rod further comprises a gear end, a connecting rod part and a transmission part which are connected in sequence, and a transmission gear meshed with the gear end is rotationally mounted on the first base and the second base and located on the side, opposite to the connecting rod part, of the gear end; the transmission part is connected with a movable door plate arranged on the two sides of the middle supporting plate, and a mounting block provided with a strip-shaped hole is arranged on the lower surface of the movable door plate. The electronic device can be used as an outward folding device and an inward folding device, the overall weight of the device can be greatly reduced, the lightweight requirement of the electronic device is met, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic products, and in particular to a foldable flexible screen device. Background Art

[0002] As an application technology of OLED, flexible screens have made significant progress in recent years. Compared with rigid screens, flexible screens have significant advantages, such as being lighter and thinner, with lower power consumption. In addition, thanks to the bendability and good flexibility of flexible screens, the application scenarios of flexible screens are becoming more and more extensive. For example, the bendability of flexible screens can be used to carry smart mobile devices, which can switch the device screen between the folded state and the unfolded state. Folding screens can be divided into inward folding screens and outward folding screens, and the difference lies in whether the screen is on the inside or outside after folding. Whether it is inward folding or outward folding, the folding and opening of folding screen devices is generally achieved through a hinge.

[0003] Several patents previously applied for by the inventor, such as CN217061309U and CN217814518U, all disclose technical solutions for hinges that can be used for flexible folding screens. However, they are all hinges driven by mechanical structures, in which the damping mechanism is a necessary component, has many constituent elements and relies on friction in the parts to generate resistance, resulting in many parts and complicated assembly. In addition, the metal parts selected to meet the wear resistance requirements are heavy in themselves, resulting in an overweight overall structure. During actual use, for example, when used as a hinge for a folding electronic device, the user experience is poor, which is inconsistent with the lightweight requirements of the electronic device. Summary of the invention

[0004] The main purpose of the present invention is to provide a foldable flexible screen device, which can be used as an external folding device or an internal folding device, and can also greatly reduce the overall weight of the device, meet the lightweight requirements of electronic devices, and improve user experience.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a foldable flexible screen device, comprising: a first middle frame, a second middle frame, a middle support plate arranged between the first middle frame and the second middle frame in a long strip shape, and a first transmission rod and a second transmission rod installed on the middle support plate and extending in the opposite direction to the outer side of the middle support plate, wherein one end of each of the first transmission rod and the second transmission rod is rotatably installed on the middle support plate, and the other end of each of the first transmission rod and the second transmission rod is connected to the first middle frame or the second middle frame, the flexible screen covers and adheres to the upper surface or the lower surface of the first middle frame and the second middle frame, a first side support plate and a second side support plate are respectively arranged between the middle support plate and the first middle frame and the second middle frame, and a plurality of connectors arranged at intervals along the length direction thereof are arranged on the upper surface of each of the first side support plate and the second side support plate, and each of the connectors is rotatably connected to the middle support plate and the first middle frame or the second middle frame; The first transmission rod and the second transmission rod further include: a gear end, a connecting rod part and a transmission part connected in sequence, the gear end with a tooth body can be rotatably mounted on a first base or a second base arranged on the upper surface of the middle support plate, the connecting rod part is slidably connected to the first middle frame or the second middle frame, and a transmission gear meshing with the gear end is rotatably mounted on the first base and the second base and located on the side of the gear end opposite to the connecting rod part, the transmission gear is connected to an output shaft of an electric control motor arranged on the outside of the first base or the second base, the transmission part is connected to a movable door plate arranged on both sides of the middle support plate, the side of the movable door plate away from the first transmission rod or the second transmission rod is rotatably connected to the first middle frame or the second middle frame, and a mounting block with a strip hole is provided on the lower surface of the movable door plate, the transmission parts of the first transmission rod and the second transmission rod are connected to the strip hole by a pin shaft, and the pin shaft rotatably matched with the transmission part is slidably matched with the inner wall of the strip hole.

[0006] The further improved scheme in the above technical scheme is as follows: 1. In the above scheme, a mounting seat is provided on the upper surface of the middle support plate, on which the first linkage rod and the second linkage rod are rotatably mounted, and one end of the symmetrically arranged first linkage rod and the second linkage rod respectively can be rotatably mounted on the mounting seat, and the other end of each of the symmetrically arranged first linkage rod and the second linkage rod extends in a direction away from the mounting seat and is slidably connected to the first middle frame or the second middle frame, and a sliding block is connected between ends of the first linkage rod and the second linkage rod that are close to each other, and the sliding block is slidably mounted on the middle support plate and can reciprocate in a direction perpendicular to the length of the first linkage rod and the second linkage rod, and the sliding block and the first linkage rod are slidably connected to the first sliding part through a first track that cooperates with each other, and the sliding block and the second linkage rod are slidably connected to the second sliding part through a second track that cooperates with each other, and the symmetrically arranged first track and the second track are both arc tracks that deviate from the length direction of the first linkage rod and the second linkage rod.

[0007] 2. In the above solution, the mounting base is arranged between the first base and the second base.

[0008] 3. In the above scheme, the mounting seat further includes: a first mounting plate and a second mounting plate which are arranged face to face and spaced apart, the sliding block can move between the first mounting plate and the second mounting plate, the sliding block is embedded with a first magnet extending along its moving direction, the first mounting plate and the second mounting plate are each equipped with a second magnet which can be adsorbed and cooperated with the first magnet, when the sliding block is in contact with the first mounting plate, the angle between the first linkage rod and the second linkage rod is the largest and the second magnet on the first mounting plate is attracted to the first magnet, when the sliding block is in contact with the second mounting plate, the angle between the first linkage rod and the second linkage rod is the smallest and the second magnet on the second mounting plate is attracted to the first magnet.

[0009] 4. In the above scheme, a second movable door panel is arranged between each of the two movable door panels and the middle support plate, and a connecting block with one end embedded in the movable door panel is arranged on the lower surface of each of the second movable door panels close to the movable door panel, and a second strip hole is provided on the connecting block, and the second strip hole is connected to the convex ring on the lower surface of the movable door panel through a second pin shaft, and the second pin shaft rotatably matched with the convex ring is slidably matched with the inner wall of the second strip hole, and the other side of the second movable door panel is rotatably connected with the first transmission rod, the second transmission rod or the first linkage rod, the second linkage rod.

[0010] 5. In the above scheme, when in the unfolded state, the strip hole extends in the horizontal direction, an acute angle is formed between the second strip hole and the horizontal direction, and one end of the second strip hole away from the middle support plate is higher than the other end.

[0011] 6. In the above solution, there are two connecting blocks on the second movable door panel, located at both ends thereof.

[0012] 7. In the above scheme, an arc-shaped connecting block is provided on the lower surface of the second movable door panel of the second strip hole close to the movable door panel, and an arc-shaped connecting groove for the arc-shaped connecting block to be embedded is provided on the first linkage rod and the second linkage rod, and the arc-shaped connecting block is slidably matched with the inner wall of the arc-shaped connecting groove.

[0013] 8. In the above solution, a fixed plate is fixedly installed between the two second movable door panels and directly above the middle support plate.

[0014] 9. In the above scheme, the connecting member includes: a main body portion located in the middle of the first side support plate or the second side support plate and a first arc portion and a second arc portion extending to both sides of the first side support plate or the second side support plate respectively; the first middle frame, the second middle frame and the middle support plate are each provided with a plurality of connecting protrusions, each of the connecting protrusions is provided with an arc-shaped connecting groove for the first arc portion or the second arc portion to be embedded in; the first arc portion of the connecting member is embedded in the arc-shaped connecting groove in the connecting protrusion on the middle support plate and slidably cooperates with the inner wall of the arc-shaped connecting groove; the second arc portion of the connecting member is embedded in the arc-shaped connecting groove in the connecting protrusion on the first side support plate or the second side support plate and slidably cooperates with the inner wall of the arc-shaped connecting groove.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The foldable flexible screen device of the present invention has a flexible screen covering and pasting on the upper surface or the lower surface of the first middle frame and the second middle frame, and a first side support plate and a second side support plate are respectively arranged between the middle support plate and the first middle frame and the second middle frame, and a plurality of connecting members arranged at intervals along the length direction are arranged on the upper surface of each of the first side support plate and the second side support plate, and each connecting member is rotatably connected to the middle support plate and the first middle frame or the second middle frame, and the first transmission rod and the second transmission rod each include: a gear end, a connecting rod part and a transmission part connected in sequence, and the transmission part is connected to an active part arranged on both sides of the middle support plate The movable door panel is connected, and one side of the movable door panel away from the first transmission rod or the second transmission rod is rotatably connected to the first middle frame or the second middle frame. A mounting block with a strip hole is provided on the lower surface of the movable door panel. The transmission parts of the first transmission rod and the second transmission rod are connected to the strip hole through a pin shaft. The pin shaft rotatably matched with the transmission part is slidably matched with the inner wall of the strip hole. It can be used as an external folding device or an internal folding device. In both the internal and external folding usage scenarios, it can effectively bridge the length change of the support area required for the flexible screen during the repeated opening and closing of the screen as the device is opened and closed, so that the flexible screen can be effectively folded. The flexible screen will not be stretched in the folded state, but can be well supported in the unfolded state, thereby slowing down the deformation of the flexible screen during long-term use and extending the service life of the device. When the device is in the inner folded state, a larger bending radius can be provided for the flexible screen in the folded state, further avoiding the flexible screen from generating creases during repeated opening and closing of the device, thereby extending its service life. Furthermore, the gear end of the first transmission rod and the second transmission rod having a tooth body can be rotatably mounted on the first base or the second base arranged on the upper surface of the middle support plate, and the connecting rod portion is slidably connected to the first middle frame or the second middle frame. A transmission gear meshing with the gear end is rotatably mounted on the first base and the second base and located on the side opposite to the connecting rod portion of the gear end. The transmission gear is connected to the output shaft of an electronically controlled motor arranged on the outside of the first base or the second base. A motor is used to replace a mechanical shaft mechanism with a damping component to realize the rotational drive of the two rotating middle frames in the device, which can greatly reduce the number of components and select lightweight parts to replace metal parts that originally require wear resistance, thereby greatly reducing the overall weight of the device, meeting the lightweight requirements of electronic equipment and improving user experience.

[0016] 2. The foldable flexible screen device of the present invention, wherein the symmetrically arranged first linkage rod and the second linkage rod each have one end rotatably mounted on a mounting seat on the upper surface of the middle support plate, and the other end of each of the first linkage rod and the second linkage rod extends in a direction away from the mounting seat and is slidably connected to the first middle frame or the second middle frame, and the first linkage rod and the second linkage rod have ends close to each other connected by a sliding block, and the sliding block is slidably mounted on the middle support plate and can reciprocate in a direction perpendicular to the length of the first linkage rod and the second linkage rod, and the sliding block and the first linkage rod are slidably connected to the first sliding portion by a first track that cooperates with each other, and the sliding block and the second linkage rod are slidably connected to the second sliding portion by a second track that cooperates with each other, and the symmetrically arranged first track and the second track are both arc tracks that deviate from the length direction of the first linkage rod and the second linkage rod, and the motion transmission between the first linkage rod and the second linkage rod is realized by the sliding block, and the consistency of the rotation angle and path of the first linkage rod and the second linkage rod is achieved with a simple structure, thereby improving the consistency with the first The first middle frame and the second middle frame connected by the linkage rod and the second linkage rod have consistency and stability of their paths during the whole process of repeated opening and closing; further, its mounting seat includes: a first mounting plate and a second mounting plate arranged face to face and spaced apart, a sliding block can move between the first mounting plate and the second mounting plate, a first magnet extending along its moving direction is embedded and mounted on the sliding block, and a second magnet that can be adsorbed and cooperated with the first magnet is respectively mounted on the first mounting plate and the second mounting plate, when the sliding block is in contact with the first mounting plate, the angle between the first linkage rod and the second linkage rod is the largest and the second magnet on the first mounting plate is attracted to the first magnet, when the sliding block is in contact with the second mounting plate, the angle between the first linkage rod and the second linkage rod is the smallest and the second magnet on the second mounting plate is attracted to the first magnet, the first middle frame and the second middle frame connected with the linkage rod can be locked in the folding and unfolding states, avoiding unnecessary deflection of the first middle frame and the second middle frame when subjected to external force during use, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a schematic diagram of the overall structure of the foldable flexible screen device of the present invention; Attached Figure 2 For attachment Figure 1 Schematic diagram of the cross section along AA; Attached Figure 3 The local structure of the foldable flexible screen device of the present invention is shown in FIG. Figure 1 ; Attached Figure 4 For attachment Figure 3 The enlarged schematic diagram of point B in the middle; Attached Figure 5 For attachment Figure 3 The enlarged schematic diagram of the center C; Attached Figure 6The local structure of the foldable flexible screen device of the present invention is shown in FIG. Figure 2 ; Attached Figure 7 The local structure of the foldable flexible screen device of the present invention is shown in FIG. Figure 3 ; Attached Figure 8 It is a schematic diagram of partial disassembly of the foldable flexible screen device of the present invention; Attached Fig. 9 The local structure of the foldable flexible screen device of the present invention is shown in FIG. Figure 4 ; Attached Fig.10 This is a schematic diagram of the structural decomposition of Embodiment 1 of the foldable flexible screen device of the present invention in a flattened state; Attached Fig.11 This is a schematic diagram of the structural decomposition of Embodiment 2 of the foldable flexible screen device of the present invention in a flattened state; Attached Fig.12 It is a schematic diagram of the structure of the foldable flexible screen device of the present invention in a folded state; Attached Fig.13 It is a structural cross-sectional view of the foldable flexible screen device of the present invention in a folded state.

[0018] In the above drawings: 100, first middle frame: 200, second middle frame: 300, flexible screen; 1, middle support plate; 2, mounting seat; 201, first mounting plate; 202, second mounting plate; 31, first linkage rod; 32, second linkage rod; 311, arc-shaped connecting groove; 4, sliding block; 51, first track; 52, second track; 61, first sliding part; 62, second sliding part; 71, guide hole; 72, guide ridge; 81, first arc-shaped groove; 82, second arc-shaped groove; 91, first magnet; 92, second magnet; 93, mounting through hole 10, first transmission rod; 11, second transmission rod; 111, gear end; 112, connecting rod part; 113, transmission part; 12, transmission gear ; 13. electronically controlled motor; 141. first base; 142. second base; 143. mounting plate; 15. first side support plate; 16. second side support plate; 17. connecting piece; 171. main body; 172. first arc-shaped portion; 173. second arc-shaped portion; 18. connecting protrusion; 181. arc-shaped connecting groove; 19. fan-shaped protrusion; 20. protrusion; 21. slide groove; 211. guide groove; 22. movable door panel; 221. arc-shaped slider; 222. arc-shaped slide groove; 23. strip hole; 24. mounting block; 25. pin shaft; 26. second movable door panel; 261. arc-shaped connecting block; 27. connecting block; 28. second strip hole; 29. ​​convex ring; 30. second pin shaft; 33. fixing plate. Implementation

[0019] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0020] Embodiment 1: A foldable flexible screen device comprises: a first middle frame 100, a second middle frame 200, a middle support plate 1 in a long strip shape arranged between the first middle frame 100 and the second middle frame 200, and a first transmission rod 10 and a second transmission rod 11 installed on the middle support plate 1 and extending in the opposite direction to the outside of the middle support plate 1, wherein one end of each of the first transmission rod 10 and the second transmission rod 11 is rotatably installed on the middle support plate 1, and the other end thereof is connected to the first middle frame 100 or the second middle frame 200, and the flexible screen 300 is covered and attached to the upper surface of the first middle frame 100 and the second middle frame 200, as shown in FIG. Fig.10 , which is a schematic diagram of the structural decomposition of the present embodiment in a flattened state, wherein a first side support plate 15 and a second side support plate 16 are respectively arranged between the middle support plate 1 and the first middle frame 100 and the second middle frame 200, and a plurality of connecting members 17 are arranged at intervals along the length direction on the upper surfaces of the first side support plate 15 and the second side support plate 16, and each of the connecting members 17 is rotatably connected to the middle support plate 1 and the first middle frame 100 or the second middle frame 200; The first transmission rod 10 and the second transmission rod 11 further include: a gear end 111, a connecting rod portion 112 and a transmission portion 113 connected in sequence, the gear end 111 with a tooth body is rotatably mounted on a first base 141 or a second base 142 arranged on the upper surface of the middle support plate 1, the connecting rod portion 112 is slidably connected to the first middle frame 100 or the second middle frame 200, and a transmission gear 12 meshing with the gear end 111 is rotatably mounted on the first base 141 and the second base 142 and located on the side of the gear end 111 opposite to the connecting rod portion 112, and the transmission gear 12 is rotatably mounted on the first base 141 and the second base 142 and located on the side of the gear end 111 opposite to the connecting rod portion 112, and the transmission gear 12 is rotatably mounted on the first base 141 and the second base 142 and meshing with the gear end 111, and the transmission gear 12 is rotatably mounted on the first base 141 and the second base 142. The transmission part 113 is connected to an output shaft of the electric control motor 13 outside the second base 142, the transmission part 113 is connected to a movable door plate 22 arranged on both sides of the middle support plate 1, and the movable door plate 22 is rotatably connected to the first middle frame 100 or the second middle frame 200 on a side away from the first transmission rod 10 or the second transmission rod 11, and a mounting block 24 with a strip hole 23 is provided on the lower surface of the movable door plate 22, and the transmission part 113 of the first transmission rod 10 and the second transmission rod 11 is connected to the strip hole 23 through a pin shaft 25, and the pin shaft 25 rotatably matched with the transmission part 113 is slidably matched with the inner wall of the strip hole 23, such as Fig.12 Shown is a schematic diagram of the structure of this embodiment in a folded state (the flexible screen is not shown).

[0021] A mounting seat 2 is provided on the upper surface of the above-mentioned middle support plate 1, and a first linkage rod 31 and a second linkage rod 32 are rotatably mounted on the mounting seat 2. One end of each of the symmetrically arranged first linkage rod 31 and the second linkage rod 32 can be rotatably mounted on the mounting seat 2, and the other end of each of the symmetrically arranged first linkage rod 31 and the second linkage rod 32 extends in a direction away from the mounting seat 2 and is slidably connected to the first middle frame 100 or the second middle frame 200. The ends of the first linkage rod 31 and the second linkage rod 32 that are close to each other are connected by a sliding block 4, and the sliding block 4 can be slidably mounted on the middle support plate 1 and can reciprocate in a direction perpendicular to the length of the first linkage rod 31 and the second linkage rod 32. The sliding block 4 and the first linkage rod 31 are slidably connected by a first track 51 and a first sliding portion 61 that cooperate with each other, and the sliding block 4 and the second linkage rod 32 are slidably connected by a second track 52 and a second sliding portion 62 that cooperate with each other. The symmetrically arranged first track 51 and the second track 52 are both arc tracks that deviate from the length direction of the first linkage rod 31 and the second linkage rod 32.

[0022] The mounting base 2 is disposed between the first base 141 and the second base 142 .

[0023] The above-mentioned mounting seat 2 further includes: a first mounting plate 201 and a second mounting plate 202 arranged face to face and spaced apart, the sliding block 4 can move between the first mounting plate 201 and the second mounting plate 202, and a first magnet 91 extending along its moving direction is embedded and installed on the sliding block 4, and a second magnet 92 that can be adsorbed and cooperated with the first magnet 91 is respectively installed on the first mounting plate 201 and the second mounting plate 202. When the sliding block 4 is in contact with the first mounting plate 201, the maximum angle between the first linkage rod 31 and the second linkage rod 32 is 180° and the second magnet 92 on the first mounting plate 201 is attracted to the first magnet 91; when the sliding block 4 is in contact with the second mounting plate 202, the minimum angle between the first linkage rod 31 and the second linkage rod 32 is 0° and the second magnet 92 on the second mounting plate 202 is attracted to the first magnet 91.

[0024] The two second magnets 92 are both configured as electromagnets, which facilitate electromechanical control.

[0025] The end surfaces of both ends of the first magnet 91 are flush with the side surface of the sliding block 4 .

[0026] The first mounting plate 201 and the second mounting plate 202 each have a mounting through hole 93 coaxially arranged with the first magnet 91 , and the two second magnets 92 are respectively embedded and mounted in the corresponding mounting through hole 93 .

[0027] One end of the second magnet 92 is embedded in the mounting through hole 93 away from the end of the first magnet 91 .

[0028] The first rail 51 and the second rail 52 are arc-shaped grooves opened on the upper surface of the sliding block 4, and the first sliding part 61 and the second sliding part 62 are arc-shaped protrusions formed on the lower surface of one end of the first linkage rod 31 and the second linkage rod 32 and slidably embedded in the arc-shaped grooves.

[0029] The lower surface of one end of each of the first linkage rod 31 and the second linkage rod 32 connected to the sliding block 4 and the upper surface of the sliding block 4 are both arc-shaped surfaces.

[0030] A guide hole 71 is provided on the upper surface of the middle support plate 1 and is located between the first mounting plate 201 and the second mounting plate 202 . A guide ridge 72 is provided on the lower surface of the sliding block 4 and is embedded in the guide hole 7 . The length of the guide ridge 72 is less than the length of the guide hole 71 .

[0031] The first mounting plate 201 and the second mounting plate 202 have respective opposite surfaces formed with a first arc groove 81 and a second arc groove 82. Both sides of one end of the first linkage rod 31 are respectively embedded in a first arc groove 81 and are in rotational contact with the inner wall of the first arc groove 81. Both sides of one end of the second linkage rod 32 are respectively embedded in a second arc groove 82 and are in rotational contact with the inner wall of the second arc groove 82.

[0032] The first arc-shaped groove 81 and the second arc-shaped groove 82 are both semicircular grooves.

[0033] A second movable door plate 26 is arranged between each of the above-mentioned two movable door plates 22 and the middle support plate 1. A connecting block 27 with one end embedded in the movable door plate 22 is arranged on the lower surface of each of the second movable door plates 26 close to the movable door plate 22. A second strip hole 28 is opened on the connecting block 27. The second strip hole 28 is connected to the convex ring 29 on the lower surface of the movable door plate 22 through a second pin shaft 30. The second pin shaft 30 that is rotatably matched with the convex ring 29 is slidably matched with the inner wall of the second strip hole 28. The other side of the second movable door plate 26 is rotatably connected to the first transmission rod 10, the second transmission rod 11 or the first linkage rod 31, the second linkage rod 32.

[0034] When in the unfolded state, the strip hole 23 extends in the horizontal direction, an acute angle is formed between the second strip hole 28 and the horizontal direction, and one end of the second strip hole 28 away from the middle support plate 1 is higher than the other end.

[0035] There are two connecting blocks 27 on the second movable door panel 26, which are respectively located at two ends thereof.

[0036] The second bar-shaped hole 28 and the second movable door plate 26 are provided with an arc-shaped connecting block 261 on the lower surface of the side close to the movable door plate 22. The first linkage rod 31 and the second linkage rod 32 are provided with an arc-shaped connecting groove 311 for the arc-shaped connecting block 261 to be embedded. The arc-shaped connecting block 261 is slidably matched with the inner wall of the arc-shaped connecting groove 311.

[0037] A fixing plate 33 is fixedly disposed between the two second movable door plates 26 and directly above the middle supporting plate 1 .

[0038] The movable door panel 22 is connected to the first middle frame 100 and the second middle frame 200 through at least one set of arc-shaped sliding blocks 221 and arc-shaped sliding grooves 222 .

[0039] Embodiment 2: A foldable flexible screen device comprises: a first middle frame 100, a second middle frame 200, a middle support plate 1 in a long strip shape arranged between the first middle frame 100 and the second middle frame 200, and a first transmission rod 10 and a second transmission rod 11 installed on the middle support plate 1 and extending in the opposite direction to the outside of the middle support plate 1, wherein one end of each of the first transmission rod 10 and the second transmission rod 11 is rotatably installed on the middle support plate 1, and the other end thereof is connected to the first middle frame 100 or the second middle frame 200, and the flexible screen 300 is covered and attached to the lower surface of the first middle frame 100 and the second middle frame 200, as shown in FIG. Fig.11 , which is a schematic diagram of the structural decomposition of the present embodiment in a flattened state, wherein a first side support plate 15 and a second side support plate 16 are respectively arranged between the middle support plate 1 and the first middle frame 100 and the second middle frame 200, and a plurality of connecting members 17 are arranged at intervals along the length direction on the upper surfaces of the first side support plate 15 and the second side support plate 16, and each of the connecting members 17 is rotatably connected to the middle support plate 1 and the first middle frame 100 or the second middle frame 200; The first transmission rod 10 and the second transmission rod 11 further include: a gear end 111, a connecting rod portion 112 and a transmission portion 113 connected in sequence, the gear end 111 with a tooth body is rotatably mounted on a first base 141 or a second base 142 arranged on the upper surface of the middle support plate 1, the connecting rod portion 112 is slidably connected to the first middle frame 100 or the second middle frame 200, and a transmission gear 12 meshing with the gear end 111 is rotatably mounted on the first base 141 and the second base 142 and located on the side of the gear end 111 opposite to the connecting rod portion 112, and the transmission gear 12 is rotatably mounted on the first base 141 and the second base 142 and located on the side of the gear end 111 opposite to the connecting rod portion 112, and the transmission gear 12 is rotatably mounted on the first base 14 1 or the output shaft of the electric control motor 13 outside the second base 142, the transmission part 113 is connected to a movable door plate 22 arranged on both sides of the middle support plate 1, and the side of the movable door plate 22 away from the first transmission rod 10 or the second transmission rod 11 is rotatably connected to the first middle frame 100 or the second middle frame 200, and a mounting block 24 with a strip hole 23 is provided on the lower surface of the movable door plate 22, and the transmission part 113 of the first transmission rod 10 and the second transmission rod 11 is connected to the strip hole 23 through a pin shaft 25, and the pin shaft 25 rotatably matched with the transmission part 113 is slidably matched with the inner wall of the strip hole 23.

[0040] The connecting member 17 comprises: a main body 171 located in the middle of the first side support plate 15 or the second side support plate 16, and a first arc-shaped portion 172 and a second arc-shaped portion 173 extending to both sides of the first side support plate 15 or the second side support plate 16 respectively. The first middle frame 100, the second middle frame 200 and the middle support plate 1 are provided with a plurality of connecting protrusions 18, each of the connecting protrusions 18 is provided with an arc-shaped connecting groove 181 for the first arc-shaped portion 172 or the second arc-shaped portion 173 to be embedded in, the first arc-shaped portion 172 of the connecting member 17 is embedded in the arc-shaped connecting groove 181 in the connecting protrusion 18 on the middle support plate 1 and slidably cooperates with the inner wall of the arc-shaped connecting groove 181, and the second arc-shaped portion 173 of the connecting member 17 is embedded in the arc-shaped connecting groove 181 in the connecting protrusion 18 on the first side support plate 15 or the second side support plate 16 and slidably cooperates with the inner wall of the arc-shaped connecting groove 181.

[0041] A protrusion 20 is provided on the two side surfaces of the connecting rod part 112 of each of the first transmission rod 10 and the second transmission rod 11. A sliding groove 21 for inserting one end of the connecting rod part 112 is provided on the first middle frame 100 and the second middle frame 200. A guide groove 211 extending along the sliding direction of the connecting rod part 112 is respectively provided on the two inner walls of the sliding groove 21, and the protrusion 20 is correspondingly embedded in the guide groove 211.

[0042] The first side support plate 15, the second side support plate 16 and the middle support plate 1 are each provided with a sector-shaped protrusion 19 at both ends. When in a folded state, the end surfaces of the three sector-shaped protrusions 19 at the same end are sequentially attached.

[0043] The model of the above-mentioned electronically controlled motor 13 is MD004004.

[0044] The first base 141 or the second base 142 further comprises: two mounting plates 143 disposed face to face and spaced apart, and the gear ends 111 of the first transmission rod 11 and the second transmission rod 12 and the transmission gear 12 are disposed between the two mounting plates 143 .

[0045] The output shaft of the electronically controlled motor 13 passes through the mounting plate 143 and is connected to the transmission gear 12 .

[0046] The gear ends 111 of the first transmission rod 11 and the second transmission rod 12 are sleeved on a third pin shaft, and both ends of the third pin shaft connecting the two mounting plates 143 are rotatably connected to the corresponding mounting plates 143 .

[0047] The first transmission rod 11 and the second transmission rod 12 extend in opposite directions perpendicular to the middle support plate 1 .

[0048] The output shafts of the two electronically controlled motors 13 are arranged opposite to each other.

[0049] The working principle of the present invention is as follows: The motor drives the transmission gear thereon to rotate, thereby driving the gear end meshing with the transmission gear and the transmission rod to rotate as a whole, and finally driving the first middle frame and the second middle frame connected to the transmission rod to rotate; The electronic control method can automatically control the rotation, expansion and closure of multiple angles, and is also convenient for use with widely used intelligent voice control terminals (such as Tmall Genie and Xiao Ai), improving the intelligence level of foldable flexible screen devices.

[0050] The foldable flexible screen device of the present invention can be used as both an external folding device and an internal folding device, and in both the internal and external folding scenarios, the change in the length of the support area required for the flexible screen during the repeated opening and closing of the screen can be effectively bridged, so that the flexible screen will not be stretched in the folded state, and can be well supported in the unfolded state, thereby slowing down the deformation of the flexible screen during long-term use and extending the service life of the device. When the device is in the internal folding state, a larger bending radius can be provided for the flexible screen in the folded state, further avoiding the generation of creases on the flexible screen during the repeated opening and closing of the device, thereby extending its service life. Furthermore, a motor is used to replace a mechanical shaft mechanism with a damping component to realize the rotational drive of the two rotating middle frames in the device, which can not only greatly reduce the number of parts, but also select lightweight parts to replace the metal parts that originally required wear resistance, thereby greatly reducing the overall weight of the device, meeting the lightweight requirements of electronic equipment and improving user experience; In addition, the sliding block is used to realize the motion transmission between the first linkage rod and the second linkage rod, and the consistency of the rotation angle and path of the first linkage rod and the second linkage rod is realized with a simple structure, thereby improving the consistency and stability of the path of the first middle frame and the second middle frame connected to the first linkage rod and the second linkage rod in the whole process of repeated opening and closing; Furthermore, the folding and unfolding states of the first middle frame and the second middle frame connected to the linkage rod can be locked to avoid unnecessary deflection of the first middle frame and the second middle frame when subjected to external force during use, thereby improving the user experience.

[0051] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A foldable flexible screen device, comprising: A first middle frame (100), a second middle frame (200), a middle support plate (1) in the shape of a long strip arranged between the first middle frame (100) and the second middle frame (200), and a first transmission rod (10) and a second transmission rod (11) mounted on the middle support plate (1) and extending in the opposite direction to the outside of the middle support plate (1), wherein one end of each of the first transmission rod (10) and the second transmission rod (11) is rotatably mounted on the middle support plate (1), and the other end of each of the first transmission rod (10) and the second transmission rod (11) is connected to the first middle frame (100) or the second middle frame (200), and the flexible screen (300) covers the adhesive On the upper surface or the lower surface of the first middle frame (100) and the second middle frame (200), characterized in that: a first side support plate (15) and a second side support plate (16) are respectively arranged between the middle support plate (1) and the first middle frame (100) and the second middle frame (200); the upper surfaces of the first side support plate (15) and the second side support plate (16) are each provided with a plurality of connecting members (17) arranged at intervals along the length direction thereof; each of the connecting members (17) is rotatably connected to the middle support plate (1) and the first middle frame (100) or the second middle frame (200); The first transmission rod (10) and the second transmission rod (11) further comprise: a gear end (111), a connecting rod portion (112) and a transmission portion (113) connected in sequence; the gear end (111) having a tooth body is rotatably mounted on a first base (141) or a second base (142) disposed on the upper surface of the middle support plate (1); the connecting rod portion (112) is slidably connected to the first middle frame (100) or the second middle frame (200); a transmission gear (12) meshing with the gear end (111) is rotatably mounted on the first base (141) and the second base (142) and located on a side of the gear end (111) opposite to the connecting rod portion (112); the transmission gear (12) is rotatably mounted on a side of the first base (141) and the second base (142) and located on a side of the gear end (111) opposite to the connecting rod portion (112); the transmission gear (12) is rotatably mounted on a first base (141) or a second base (142) disposed on the first base (141) or the second base (142). or the output shaft of an electric control motor (13) outside the second base (142); the transmission part (113) is connected to a movable door plate (22) arranged on both sides of the middle support plate (1); the movable door plate (22) is rotatably connected to the first middle frame (100) or the second middle frame (200) at a side away from the first transmission rod (10) or the second transmission rod (11); a mounting block (24) having a strip hole (23) is provided on the lower surface of the movable door plate (22); the transmission part (113) of the first transmission rod (10) or the second transmission rod (11) is connected to the strip hole (23) via a pin shaft (25); the pin shaft (25) rotatably matched with the transmission part (113) is slidably matched with the inner wall of the strip hole (23).

2. The foldable flexible screen device according to claim 1, characterized in that: A mounting seat (2) is provided on the upper surface of the middle support plate (1), and a first linkage rod (31) and a second linkage rod (32) are rotatably mounted on the mounting seat (2). The first linkage rod (31) and the second linkage rod (32) are symmetrically arranged, and one end of each of them is rotatably mounted on the mounting seat (2), and the other end of each of them extends in a direction away from the mounting seat (2) and is slidably connected to the first middle frame (100) or the second middle frame (200). The ends of the first linkage rod (31) and the second linkage rod (32) that are close to each other are connected by a sliding block (4), and the sliding block (4) is slidable. The sliding block (4) is mounted on the middle support plate (1) and can reciprocate in a direction perpendicular to the length of the first linkage rod (31) and the second linkage rod (32); the sliding block (4) and the first linkage rod (31) are slidably connected via a first track (51) and a first sliding portion (61) that cooperate with each other; the sliding block (4) and the second linkage rod (32) are slidably connected via a second track (52) and a second sliding portion (62) that cooperate with each other; the first track (51) and the second track (52) that are symmetrically arranged are both arc tracks that deviate from the length direction of the first linkage rod (31) and the second linkage rod (32).

3. The foldable flexible screen device according to claim 2, characterized in that: The mounting seat (2) is arranged between the first base (141) and the second base (142).

4. The foldable flexible screen device according to claim 2, characterized in that: The mounting seat (2) further comprises: a first mounting plate (201) and a second mounting plate (202) which are arranged face to face and spaced apart from each other; the sliding block (4) can move between the first mounting plate (201) and the second mounting plate (202); a first magnet (91) extending along the moving direction thereof is embedded and mounted on the sliding block (4); a second magnet (92) which can be adsorbed and matched with the first magnet (91) is respectively mounted on the first mounting plate (201) and the second mounting plate (202); when the sliding block (4) is in contact with the first mounting plate (201), the angle between the first linkage rod (31) and the second linkage rod (32) is the largest and the second magnet (92) on the first mounting plate (201) is attracted to the first magnet (91); when the sliding block (4) is in contact with the second mounting plate (202), the angle between the first linkage rod (31) and the second linkage rod (32) is the smallest and the second magnet (92) on the second mounting plate (202) is attracted to the first magnet (91).

5. The foldable flexible screen device according to claim 2, characterized in that: A second movable door plate (26) is disposed between each of the two movable door plates (22) and the middle support plate (1); a connecting block (27) with one end embedded in the movable door plate (22) is disposed on the lower surface of each second movable door plate (26) on the side close to the movable door plate (22); a second strip hole (28) is provided on the connecting block (27); the second strip hole (28) is connected to a convex ring (29) on the lower surface of the movable door plate (22) via a second pin shaft (30); the second pin shaft (30) rotatably engaged with the convex ring (29) is slidably engaged with the inner wall of the second strip hole (28); the other side of the second movable door plate (26) is rotatably connected to the first transmission rod (10), the second transmission rod (11) or the first linkage rod (31), the second linkage rod (32).

6. The foldable flexible screen device according to claim 5, characterized in that: When in the unfolded state, the strip-shaped hole (23) extends in the horizontal direction, an acute angle is formed between the second strip-shaped hole (28) and the horizontal direction, and one end of the second strip-shaped hole (28) away from the middle support plate (1) is higher than the other end thereof.

7. The foldable flexible screen device according to claim 5, characterized in that: Two connecting blocks (27) are provided on the second movable door panel (26), respectively located at two ends thereof.

8. The foldable flexible screen device according to claim 5, characterized in that: An arc-shaped connecting block (261) is provided on the lower surface of the second bar-shaped hole (28) and the second movable door plate (26) on the side close to the movable door plate (22); an arc-shaped connecting groove (311) for the arc-shaped connecting block (261) to be inserted is provided on the first linkage rod (31) and the second linkage rod (32); the arc-shaped connecting block (261) is slidably matched with the inner wall of the arc-shaped connecting groove (311).

9. The foldable flexible screen device according to any one of claims 1 to 8, characterized in that: A fixed plate (33) is fixedly arranged between the two second movable door plates (26) and directly above the middle support plate (1).

10. The foldable flexible screen device according to any one of claims 1 to 8, characterized in that: The connecting member (17) comprises: a main body (171) located in the middle of the first side support plate (15) or the second side support plate (16), and a first arc-shaped portion (172) and a second arc-shaped portion (173) extending to both sides of the first side support plate (15) or the second side support plate (16), respectively; the first middle frame (100), the second middle frame (200) and the middle support plate (1) are each provided with a plurality of connecting protrusions (18), each of the connecting protrusions (18) being provided with a first arc-shaped portion (172) or a second arc-shaped portion (173) extending to both sides of the first side support plate (15) or the second side support plate (16), The first arc-shaped portion (173) of the connecting member (17) is embedded in the arc-shaped connecting groove (181), the first arc-shaped portion (172) of the connecting member (17) is embedded in the arc-shaped connecting groove (181) in the connecting protrusion (18) on the middle support plate (1) and is slidably matched with the inner wall of the arc-shaped connecting groove (181), and the second arc-shaped portion (173) of the connecting member (17) is embedded in the arc-shaped connecting groove (181) in the connecting protrusion (18) on the first side support plate (15) or the second side support plate (16) and is slidably matched with the inner wall of the arc-shaped connecting groove (181).

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