Inward-foldable flexible screen electronic device

Abstract

The present invention discloses an inwardly-foldable flexible screen electronic device, which includes two rotating shaft units each having a housing, a support shell connected between the housings of the two rotating shaft units, a first rotating shell and a second rotating shell respectively located on both sides of the support shell, and a flexible screen covering the inner sides of the first rotating shell and the second rotating shell; each of the rotating shaft units further includes: two pins installed in the support shell and two gear shafts arranged between the two pins, one end of each of the two pins is respectively installed with a rotating arm, a damping module is arranged between the other end of the pin and the rotating arm, the gear end of the rotating arm is rotatably sleeved on the pin, and the connecting end of the rotating arm is located outside the support shell and is connected to the first rotating shell or the second rotating shell on the same side. The present invention can avoid the screen from being damaged due to offset during the opening and closing process, and protect the flexible screen to maintain stable performance during long-term use.

Description

Technical Field

[0001] The present invention relates to an inward-foldable flexible screen electronic device, belonging to the technical field of electronic products. Background Art

[0002] With the development of technology, many new forms of electronic products have emerged, such as electronic devices with flexible screens: the two end portions of the flexible screen are respectively connected to two relatively rotatable parts of the electronic device, so as to increase the display area as much as possible. At present, during the use of the flexible screen, the screen accommodation space is insufficient, and an arc-shaped folding part will appear in the middle part of the screen body when the screen is folded, resulting in creases on the screen easily after long-term use, which not only affects the appearance, but also causes local touch failure and reduces the use experience. Summary of the Invention

[0003] The purpose of the present invention is to provide an inward-foldable flexible screen electronic device, which can make the paths of the two movable support plates supporting the flexible screen always remain consistent and stable during multiple opening and closing processes, avoid damage caused by the offset of the screen during the opening and closing process, and protect the flexible screen to maintain stable performance during long-term use.

[0004] To achieve the above object, the technical solution adopted by the present invention is: an inward-foldable flexible screen electronic device, including two rotating shaft units with shells, a support shell connected between the shells of the two rotating shaft units, a first rotating shell and a second rotating shell respectively located on both sides of the support shell, and a flexible screen covering the inner sides of the first rotating shell and the second rotating shell;

[0005] Each of the rotating shaft units further includes: two pins installed in the shell and two gear shafts arranged between the two pins, one end of each of the two pins is respectively installed with a rotating arm, a damping module is arranged between the other end of the pin and the rotating arm, the gear end of the rotating arm is rotatably sleeved on the pin, the connecting end of the rotating arm is located outside the shell and is connected to the first rotating shell or the second rotating shell on the same side, and a first gear meshing with each other is respectively installed on the two gear shafts between the gear ends of the two rotating arms, and each first gear meshes with the gear end of the adjacent rotating arm;

[0006] The other end of the gear shaft far from the first gear is installed with second gears meshing with each other, and a link gear is rotatably arranged on the outside of each of the two second gears, and the gear end of the link gear meshes with the adjacent second gear;

[0007] A first movable support plate is installed between two link gears on the same side of two rotating shaft units, and a second movable support plate is installed between two link gears on the other side. The first movable support plate and the second movable support plate that are in contact with the flexible screen surface of the device are respectively connected to the link ends of the corresponding link gears and can rotate with the link gears;

[0008] Two parallel support baffles are arranged in the support shell. Two meshing third gears are installed between the two support baffles. A support rotating arm is arranged on the outer side of each of the two third gears. One end of the support rotating arm is located between the two support baffles and is meshed and connected with the third gear, and the other end of the support rotating arm extends out of the support shell and is connected with the first movable support plate or the second movable support plate on the same side.

[0009] The further improved solutions in the above technical solutions are as follows:

[0010] 1. In the above solution, the pitch circle diameters of the gear end of the rotating arm, the first gear, and the second gear are all the same. The ratio of the pitch circle diameter between the gear end of the link gear and the second gear is 10:. The rotation speed of the link gear is less than that of the rotating arm. Two groups of first connection parts and second connection parts corresponding to the two rotating shaft units are arranged on the surfaces of the first movable support plate and the second movable support plate that are opposite to the flexible screen respectively. In each group of the first connection parts and the second connection parts, an inclined chute is provided on the first connection part close to the link gear, and the link on the link end of the link gear is movably embedded in the chute. An arc-shaped groove is provided on the second connection part, and an arc-shaped convex block matched with the arc-shaped groove is arranged on the connection end of the rotating arm. When the rotating arm rotates from the unfolded 0° state to the closed 90° state, the arc-shaped convex block rotates in the arc-shaped groove, and the link in the chute moves from one end of the chute to the other end.

[0011] 2. In the above solution, an avoidance groove is arranged in the area between the connection end of the rotating arm and the gear end of the rotating arm.

[0012] 3. In the above solution, the two support baffles are arranged in the middle of the support shell.

[0013] 4. In the above solution, the first movable support plate and the second movable support plate both extend to contact the adjacent rotating arm.

[0014] 5. In the above solution, the connection end of the rotating arm of each rotating shaft unit is connected to the adjacent first movable support plate or second movable support plate.

[0015] 6. In the above solution, a middle support plate covers the inner sides of the two shells and the support shell.

[0016] 7. In the above solution, one end of the gear shaft is rotatably embedded in the first end plate of the housing, the other end of the gear shaft passes through the second end plate of the housing and is fixedly installed with the second gear, and a baffle is arranged on the side of the second gear opposite to the housing and is installed on the gear shaft.

[0017] 8. In the above solution, both sides of the gear end of the connecting rod gear are respectively provided with outwardly protruding first rotating shaft portions and second rotating shaft portions. The first rotating shaft portion is rotatably embedded in the second end plate of the housing, and the second rotating shaft portion is rotatably connected to the baffle.

[0018] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0019] 1. The present invention is an in-foldable flexible screen electronic device. On the basis of realizing stable opening and closing from 0° to 180°, it can support the middle part of the flexible screen during the whole process of opening and closing. It can also make the paths of the two movable support plates supporting the flexible screen always remain consistent and stable during multiple opening and closing processes, avoiding damage caused by the screen offset during opening and closing, and protecting the flexible screen to maintain stable performance during long-term use. Further, two parallel support baffles are arranged in the support housing, two mutually meshing third gears are installed between the two support baffles, a support rotating arm is arranged outside each of the two third gears, one end of the support rotating arm is located between the two support baffles and is meshed and connected with the third gear, and the other end of the support rotating arm extends out of the support housing and is movably connected with the first movable support plate or the second movable support plate on the same side, so as to support the movable support plate between the two rotating shaft units, improve the stability of the movable support plate during long-term repeated opening and closing processes, and thus ensure its stable support for the flexible screen.

[0020] 2. The inward-foldable flexible screen electronic device of the present invention has the same pitch circle diameter for the gear end of the rotating arm, the first gear, and the second gear respectively. The ratio of the pitch circle diameter between the gear end of the connecting rod gear and the second gear is 10: (5-8), so that the rotational speed of the connecting rod gear is less than that of the rotating arm. On the surfaces of the first movable support plate and the second movable support plate facing away from the flexible screen respectively, there are 2 groups of first connection parts and second connection parts corresponding to 2 rotating shaft units. In each group of the first connection parts and the second connection parts, the first connection part close to the connecting rod gear has an inclined chute, and the connecting rod at the connecting rod end of the connecting rod gear is movably embedded in the chute. An arc-shaped groove is opened on the second connection part, and an arc-shaped convex block cooperating with the arc-shaped groove is provided at the connection end of the rotating arm. When the rotating arm rotates from the unfolded 0° state to the folded 90° state, the arc-shaped convex block rotates in the arc-shaped groove, and the connecting rod in the chute moves from one end of the chute to the other end. The rotational speed of the connecting rod gear is less than that of the rotating arm, so that there is a certain angle between the two movable plate support plates in the folded state. Then, through the cooperation of the chute, the arc-shaped groove and the arc-shaped convex block, a space more in line with the screen displacement trend is formed during the opening and closing of the movable support plate, and a larger R angle is obtained when the screen is folded inward, protecting the performance of the screen to be stable during long-term use and not easily generating creases. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG. Figure 1 is an exploded structural schematic diagram of the inward-foldable flexible screen electronic device of the present invention in the unfolded state;

[0022] FIG. Figure 2 is a structural schematic diagram of the inward-foldable flexible screen electronic device of the present invention in the folded state;

[0023] FIG. Figure 3 is a partial structural schematic diagram of the inward-foldable flexible screen electronic device of the present invention in the unfolded state;

[0024] FIG. Figure 4 is a front view of a partial structure of the inward-foldable flexible screen electronic device of the present invention in the unfolded state;

[0025] FIG. Figure 5 is a front view of a partial structure of the inward-foldable flexible screen electronic device of the present invention in the folded state;

[0026] FIG. Figure 6 is a partial structural cross-sectional view of the inward-foldable flexible screen electronic device of the present invention in the unfolded state;

[0027] FIG. Figure 7 is a structural schematic diagram of the rotating shaft unit in the inward-foldable flexible screen electronic device of the present invention Figure 1 ;

[0028] FIG. Figure 8Schematic structure of the rotating shaft unit in the inward-foldable flexible screen electronic device of the present invention Figure 2 ;

[0029] Appendix Figure 9 Exploded schematic structure of the rotating shaft unit in the inward-foldable flexible screen electronic device of the present invention Figure 1 ;

[0030] Appendix Figure 10 Exploded schematic structure of the rotating shaft unit in the flexible screen electronic device of the present invention Figure 2 ;

[0031] Appendix Figure 11 Partial structure schematic diagram of the inward-foldable flexible screen electronic device of the present invention;

[0032] Appendix Figure 12 Partial exploded structure schematic diagram of the inward-foldable flexible screen electronic device of the present invention;

[0033] Appendix Figure 13 Partial structure principle schematic diagram of the inward-foldable flexible screen electronic device of the present invention Figure 1 ;

[0034] Appendix Figure 14 Partial structure principle schematic diagram of the inward-foldable flexible screen electronic device of the present invention Figure 2 ;

[0035] Appendix Figure 15 Partial structure principle schematic diagram of the inward-foldable flexible screen electronic device of the present invention Figure 3 ;

[0036] Appendix Figure 16 Partial structure principle schematic diagram of the inward-foldable flexible screen electronic device of the present invention Figure 4 .

[0037] In the above drawings: 1. Housing; 2. Pin; 3. Gear shaft; 4. Rotating arm; 41. Gear end of the rotating arm; 42. Connecting end; 43. Second convex part; 44. Second concave part; 45. Arc-shaped convex block; 46. Avoidance groove; 5. First gear; 6. Second gear; 7. Link gear; 71. Gear end of the link gear; 72. Link end; 73. First rotating shaft part; 74. Second rotating shaft part; 81. First movable support plate; 82. Second movable support plate; 801. First connecting part; 802. Second connecting part; 803. Chute; 804. Arc-shaped groove; 91. Stop piece; 92. Spring; 101. First torsion piece; 102. Second torsion piece; 103. Third torsion piece; 11. Support frame; 111. First convex part; 112. First concave part; 12. Baffle; 16. Rotating shaft unit; 17. Support shell; 18. Middle support plate; 19. First rotating shell; 20. Second rotating shell; 21. Flexible screen. Specific Embodiment

[0038] Embodiment 1: An inward-foldable flexible screen electronic device includes two rotating shaft units 16 each having a housing 1, a support housing 17 connected between the housings 1 of the two rotating shaft units 16, a first rotating housing 19 and a second rotating housing 20 respectively located on both sides of the support housing 17, and a flexible screen 21 covering the inner sides of the first rotating housing 19 and the second rotating housing 20;

[0039] Each of the rotating shaft units 16 further includes: two pins 2 installed in the housing 1 and two gear shafts 3 disposed between the two pins 2. One end of each of the two pins 2 is respectively installed with a rotating arm 4. A damping module is provided between the other end of the pin 2 and the rotating arm 4. The gear end 41 of the rotating arm is rotatably sleeved on the pin 2. The connecting end 42 of the rotating arm 4 is located outside the housing 1 and is connected to the first rotating housing 19 or the second rotating housing 20 on the same side. On the two gear shafts 3 and between the gear ends 41 of the two rotating arms, first gears 5 that mesh with each other are respectively installed. Each first gear 5 meshes with the gear end 41 of the adjacent rotating arm;

[0040] On the other end of the gear shaft 3 away from the first gear 5, second gears 6 that mesh with each other are installed. On the outside of each of the two second gears 6, a link gear 7 is rotatably provided. The gear end 71 of the link gear meshes with the adjacent second gear 6;

[0041] A first movable support plate 81 is installed between the two link gears 7 on the same side of the two rotating shaft units 16, and a second movable support plate 82 is installed between the two link gears 7 on the other side. The first movable support plate 81 and the second movable support plate 82 that are in surface contact with the flexible screen 21 of the device are respectively connected to the link ends 72 of the corresponding link gears 7 and can rotate with the link gears 7;

[0042] Two parallel support baffles are provided in the support housing 17. Two third gears that mesh with each other are installed between the two support baffles. A support rotating arm is provided on the outside of each of the two third gears. One end of the support rotating arm is located between the two support baffles and is meshed and connected to the third gear. The other end of the support rotating arm extends out of the support housing 17 and is connected to the first movable support plate 81 or the second movable support plate 82 on the same side.

[0043] The pitch circle diameters of the gear ends 41 of the above-mentioned rotating arm, the first gear 5, and the second gear 6 are all the same. The ratio of the pitch circle diameter between the gear end 71 of the connecting rod gear and the second gear 6 is 10:5 to 8, so that the rotational speed of the connecting rod gear 7 is less than that of the rotating arm 4. On the surfaces of the above-mentioned first movable support plate 81 and the second movable support plate 82 that face away from the flexible screen 21, there are respectively provided 2 groups of first connecting portions 801 and second connecting portions 802 corresponding to 2 rotating shaft units 16. In each group of the first connecting portion 801 and the second connecting portion 802, on the above-mentioned first connecting portion 801 close to the connecting rod gear 7, there is an inclined chute 803. The connecting rod on the connecting rod end 72 of the above-mentioned connecting rod gear 7 is movably inserted into the chute 803. An arc-shaped groove 804 is formed on the above-mentioned second connecting portion 802. An arc-shaped convex block 45 that cooperates with the above-mentioned arc-shaped groove 804 is provided on the connecting end 42 of the above-mentioned rotating arm 4. When the rotating arm 4 rotates from the unfolded 0° state to the closed 90° state, the above-mentioned arc-shaped convex block 45 rotates in the arc-shaped groove 804, and the connecting rod in the chute 803 moves from one end of the chute 803 to the other end;

[0044] The above-mentioned damping module includes a stop piece 91 mounted on the pin 2 and a spring 92 sleeved on the pin 2. The above-mentioned spring 92 in a compressed state is located between the stop piece 91 and the gear end 41 of the rotating arm; there is an avoidance groove 46 in the area between the connecting end 42 and the gear end 41 of the rotating arm 4 of the above-mentioned rotating arm 4.

[0045] Embodiment 2: An inwardly foldable flexible screen electronic device includes 2 rotating shaft units 16 having a housing 1, a support housing 17 connected between the housings 1 of the 2 rotating shaft units 16, a first rotating housing 19 and a second rotating housing 20 respectively located on both sides of the support housing 17, and a flexible screen 21 covering the inner sides of the first rotating housing 19 and the second rotating housing 20;

[0046] Each of the above-mentioned rotating shaft units 16 further includes: 2 pins 2 installed in the housing 1 and 2 gear shafts 3 arranged between the 2 pins 2. One end of each of the 2 pins 2 is respectively installed with a rotating arm 4. A damping module is provided between the other end of the pin 2 and the rotating arm 4. The gear end 41 of the rotating arm is rotatably sleeved on the pin 2. The connecting end 42 of the rotating arm 4 is located outside the housing 1 and is connected to the first rotating housing 19 or the second rotating housing 20 on the same side. On the 2 gear shafts 3 and between the gear ends 41 of the 2 rotating arms, there are respectively installed first gears 5 that mesh with each other, and each first gear 5 meshes with the gear end 41 of the adjacent rotating arm;

[0047] On the other end of the gear shaft 3 away from the first gear 5, there is a second gear 6 installed which meshes with another second gear 6. On the outer side of each of the two second gears 6, there is a link gear 7 rotatably arranged. The gear end 71 of the link gear meshes with the adjacent second gear 6;

[0048] Between the two link gears 7 on the same side of the two shaft units 16, there is a first movable support plate 81 installed. Between the two link gears 7 on the other side, there is a second movable support plate 82 installed. The first movable support plate 81 and the second movable support plate 82 which are in surface contact with the flexible screen 21 of the device are respectively connected to the link end 72 of the corresponding link gear 7 and can rotate along with the link gear 7;

[0049] Inside the support shell 17, there are two parallel support baffles arranged. Between the two support baffles, there are two meshing third gears installed. On the outer side of each of the two third gears, there is a support rotating arm. One end of the support rotating arm is located between the two support baffles and is meshingly connected with the third gear. The other end of the support rotating arm extends out of the support shell 17 and is connected to the first movable support plate 81 or the second movable support plate 82 on the same side. The support rotating arm and the first movable support plate 81 or the second movable support plate 82 are movably connected through a mutually cooperating arc-shaped groove and arc-shaped convex block.

[0050] The two above-mentioned support baffles are arranged in the middle of the support shell 17; the first movable support plate 81 and the second movable support plate 82 both extend to contact the adjacent rotating arm 4; the connecting end 42 of the rotating arm 4 of each shaft unit 16 is connected to the adjacent first movable support plate 81 or the second movable support plate 82; a middle support plate 18 covers the inner sides of the two shells 1 and the support shell 17;

[0051] One end of the above-mentioned gear shaft 3 is rotatably embedded in the first end plate of the shell 1. The other end of the above-mentioned gear shaft 3 passes through the second end plate of the shell 1 and the above-mentioned second gear 6 is fixedly installed. A baffle 12 is arranged on the side of the second gear 6 opposite to the shell 1 and is installed on the gear shaft 3;

[0052] On both sides of the gear end 71 of the above-mentioned link gear, there are respectively outwardly protruding first shaft parts 73 and second shaft parts 74. The first shaft part 73 is rotatably embedded in the second end plate of the shell 1. The second shaft part 74 is rotatably connected with the baffle 12;

[0053] The above damping module includes a first torsion piece 101 connecting two pins 2, a second torsion piece 102 connecting a gear shaft 3 and an adjacent pin 2, a third torsion piece 103 connecting the other gear shaft 3 and an adjacent pin 2, and a stop buckle piece. The first torsion piece 101, the second torsion piece 102, and the third torsion piece 103 are staggered in the axial direction of the pin 2. The stop buckle piece installed on the pin 2 or the gear shaft 3 is located outside the torsion area formed by the first torsion piece 101, the second torsion piece 102, and the third torsion piece 103;

[0054] A support frame 11 is provided between the gear end 41 of the above rotating arm and the damping module. The middle of the support frame 11 is installed on the pin 2. On the surfaces of both ends of the support frame 11 facing the gear end 41 of the rotating arm, first protrusions 111 are arranged at circumferential intervals, so that a first recess 112 is formed between adjacent first protrusions 111. On the surface of the gear end 41 of the rotating arm facing the support frame 11, there are second protrusions 43 for embedding into the first recess 112, and a second recess 44 that can cooperate with the first protrusion 111 is formed between adjacent second protrusions 43.

[0055] See the appendix Figures 13 - 16 , when the rotating shaft mechanism folds inward from the Figure 13 unfolded state in the figure to the Figure 14 folded state in the appendix, the two rotating arms 4 each rotate inward by 90°. The two movable support plates 81 / 82 are respectively connected to the rotating arm 4 through an arc-shaped convex block and an arc-shaped groove, so that the movable support plates 81 / 82 can rotate around the rotation center C in the figure;

[0056] Also, through the setting of the pitch circle diameter between the link gear and the second gear and its cooperation with the chute 803, when the rotating arm 4 rotates around the housing at a speed of 1, the rotational speeds of the gear end of the rotating arm and the first gear are both 1. The first gear is fixed on the gear shaft 3. Therefore, the gear shaft 3 and the second gear 6 on the gear shaft 3 can be driven to rotate at a speed of 1 at the same time;

[0057] Thus, the link gear 7 is driven to rotate at a speed less than or equal to 0.8 (such as 0.71). When the rotating arm 4 rotates inward to 90°, the two rotating arms 4 are parallel, and a larger included angle is formed between the two link gears 7, so that the movable support plates 81 / 82 slide from position A to position B along the chute around the rotation center C, thereby forming a larger accommodation space between the two movable support plates 81 / 82, and the length of the attachment surface of the flexible screen 21 does not change.

[0058] When the above-mentioned inward-foldable flexible screen electronic device is adopted, on the basis of realizing stable opening and closing within the range of 0° to 180°, it can support the middle part of the flexible screen throughout the opening and closing process, and can also make the paths of the two movable support plates that support the flexible screen always remain consistent and stable during multiple opening and closing processes, avoiding damage caused by screen offset during opening and closing, and protecting the performance of the flexible screen to remain stable during long-term use;

[0059] Furthermore, the movable support plate is supported between the two rotating shaft units to improve the stability of the movable support plate during long-term repeated opening and closing processes, thereby ensuring its stable support for the flexible screen;

[0060] Furthermore, the rotation speed of the link gear is less than that of the rotating arm, so that there is a certain angle between the two movable plate support plates in the folded state. Then, through the cooperation of the chute, the arc-shaped groove and the arc-shaped convex block, the movable support plate forms a space that more conforms to the screen displacement trend during the opening and closing process, and has a larger R angle when the screen is folded inward, protecting the performance of the screen to remain stable during long-term use and not easily generating creases.

[0061] The above embodiments are only used to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An in-foldable flexible screen electronic device, characterized in that: It includes two rotating shaft units (16) each having a housing (1), a support housing (17) connected between the housings (1) of the two rotating shaft units (16), a first rotating housing (19) and a second rotating housing (20) respectively located on both sides of the support housing (17), and a flexible screen (21) covering the inner sides of the first rotating housing (19) and the second rotating housing (20); Each of the rotating shaft units (16) further includes: two pins (2) installed in the housing (1) and two gear shafts (3) arranged between the two pins (2). One end of each of the two pins (2) is respectively installed with a rotating arm (4). A damping module is provided between the other end of the pin (2) and the rotating arm (4). The gear end (41) of the rotating arm is rotatably sleeved on the pin (2). The connecting end (42) of the rotating arm (4) is located outside the housing (1) and is connected to the first rotating housing (19) or the second rotating housing (20) on the same side. Two first gears (5) that mesh with each other are respectively installed on the two gear shafts (3) and between the gear ends (41) of the two rotating arms. Each of the first gears (5) meshes with the gear end (41) of the adjacent rotating arm; On the other end of the gear shaft (3) away from the first gear (5), second gears (6) that mesh with each other are installed. A link gear (7) is rotatably provided on the outside of each of the two second gears (6). The gear end (71) of the link gear meshes with the adjacent second gear (6); A first movable support plate (81) is installed between the two link gears (7) on the same side of the two rotating shaft units (16), and a second movable support plate (82) is installed between the two link gears (7) on the other side. The first movable support plate (81) and the second movable support plate (82) that are in surface contact with the flexible screen (21) of the device are respectively connected to the link ends (72) of the corresponding link gears (7) and can rotate with the link gears (7); Two parallel support baffles are provided in the support housing (17). Two third gears that mesh with each other are installed between the two support baffles. A support rotating arm is provided on the outside of each of the two third gears. One end of the support rotating arm is located between the two support baffles and is meshed and connected with the third gear. The other end of the support rotating arm extends out of the support housing (17) and is connected to the first movable support plate (81) or the second movable support plate (82) on the same side.

2. The inner-foldable flexible screen electronic device according to claim 1, wherein: The pitch circle diameters of the gear end (41) of the rotating arm, the first gear (5), and the second gear (6) are all the same. The ratio of the pitch circle diameter between the gear end (71) of the connecting rod gear and the second gear (6) is 10:(5 - 8), so that the rotational speed of the connecting rod gear (7) is less than that of the rotating arm (4). On the surfaces of the first movable support plate (81) and the second movable support plate (82) facing away from the flexible screen (21), there are 2 groups of first connection parts (801) and second connection parts (802) corresponding to 2 rotating shaft units (16). In each group of the first connection part (801) and the second connection part (802), the first connection part (801) close to the connecting rod gear (7) has an inclined chute (803). The connecting rod on the connecting rod end (72) of the connecting rod gear (7) is movably embedded in the chute (803). An arc-shaped groove (804) is formed on the second connection part (802). An arc-shaped convex block (45) that cooperates with the arc-shaped groove (804) is provided on the connection end (42) of the rotating arm (4). When the rotating arm (4) rotates from the unfolded 0° state to the closed 90° state, the arc-shaped convex block (45) rotates in the arc-shaped groove (804), and the connecting rod in the chute (803) moves from one end of the chute (803) to the other end.

3. The inner-foldable flexible screen electronic device according to claim 2, characterized in that: There is an avoidance groove (46) in the area between the connection end (42) and the gear end (41) of the rotating arm (4).

4. The inner-foldable flexible screen electronic device according to any one of claims 1 to 3, wherein: The two support baffles are arranged in the middle of the support shell (17).

5. The inner-foldable flexible screen electronic device according to any one of claims 1 to 3, characterized in that: The first movable support plate (81) and the second movable support plate (82) both extend to contact the adjacent rotating arm (4).

6. The inwardly foldable flexible screen electronic device according to any one of claims 1 to 3, characterized in that: The connection end (42) of the rotating arm (4) of each rotating shaft unit (16) is connected to the adjacent first movable support plate (81) or second movable support plate (82).

7. The inner-foldable flexible screen electronic device according to claim 1, characterized in that: A middle support plate (18) covers the inner sides of the two shells (1) and the support shell (17).

8. The inner-foldable flexible screen electronic device according to any one of claims 1 to 3, characterized in that: One end of the gear shaft (3) is rotatably embedded in the first end plate of the shell (1). The other end of the gear shaft (3) passes through the second end plate of the shell (1) and is fixedly installed with the second gear (6). A baffle (12) is arranged on the side of the second gear (6) facing away from the shell (1) and is installed on the gear shaft (3).

9. The inner-foldable flexible screen electronic device according to claim 8, wherein: On both sides of the gear end (71) of the connecting rod gear, there are outwardly protruding first rotating shaft parts (73) and second rotating shaft parts (74). The first rotating shaft part (73) is rotatably embedded in the second end plate of the shell (1), and the second rotating shaft part (74) is rotatably connected to the baffle (12).

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