CN115641774A

CN115641774A - Inward folding type flexible screen electronic equipment

Info

Publication number: CN115641774A
Application number: CN202110818147.1A
Authority: CN
Inventors: 陳威仲; 万鹏程; 董小慧
Original assignee: Jiangsu Yingzhirong Technology Co ltd
Current assignee: Jiangsu Yingzhirong Technology Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2023-01-24

Abstract

The invention discloses an inward-folding flexible screen electronic device, which comprises 2 rotating shaft units with shells, a supporting shell connected among the shells of the 2 rotating shaft units, a first rotating shell and a second rotating shell which are respectively positioned at two sides of the supporting shell, and a flexible screen covering the inner sides of the first rotating shell and the second rotating shell; each of the rotation shaft units further includes: 2 install in the pin that supports the shell and set up 2 gear shafts between 2 pins, 2 a swinging boom is installed separately to the one end of pin, the other end of pin with be provided with damping module between the swinging boom, the gear end of swinging boom rotationally the suit on the pin, the link of this swinging boom is located the support shell outside and rotates the shell with the first rotation shell or the second that are located the homonymy and be connected. The invention can avoid the screen from being damaged due to the deviation in the opening and closing process and protect the flexible screen from keeping stable performance in the long-term use process.

Description

Inward folding type flexible screen electronic equipment

Technical Field

The invention relates to an inward-folding flexible screen electronic device, and belongs to the technical field of electronic products.

Background

With the development of technology, many new electronic products, such as electronic devices with flexible screens, come into play: two side end parts of the flexible screen are respectively connected to two parts of the electronic equipment which can rotate relatively, so that the display area is enlarged as much as possible. The screen accommodation space of the current flexible screen in the using process is not enough, the middle part of the screen body can be folded in an arc shape when the screen is closed, so that the screen is easy to fold after being used for a long time, the appearance is attractive, partial touch failure can be caused, and the use experience is reduced.

Disclosure of Invention

The invention aims to provide an inward-folding flexible screen electronic device, which can enable paths of 2 movable supporting plates for supporting a flexible screen to be always consistent and stable in multiple opening and closing processes, avoid the screen from being damaged due to deviation in the opening and closing processes, and protect the flexible screen from keeping stable performance in the long-term use process.

In order to achieve the purpose, the invention adopts the technical scheme that: an inner folding type flexible screen electronic device comprises 2 rotating shaft units with shells, a supporting shell connected among the shells of the 2 rotating shaft units, a first rotating shell and a second rotating shell which are respectively positioned at two sides of the supporting shell, and a flexible screen covering the inner sides of the first rotating shell and the second rotating shell;

each of the rotation shaft units further includes: the device comprises 2 pins arranged in a support shell and 2 gear shafts arranged among the 2 pins, wherein one ends of the 2 pins are respectively provided with a rotating arm, a damping module is arranged between the other end of each pin and the rotating arm, the gear ends of the rotating arms are rotatably sleeved on the pins, the connecting ends of the rotating arms are positioned outside the support shell and are connected with a first rotating shell or a second rotating shell positioned on the same side, the 2 gear shafts are respectively provided with first gears which are meshed with each other and positioned among the 2 gear ends, and each first gear is meshed with the adjacent gear end;

the other end of the gear shaft, which is far away from the first gear, is provided with second gears which are meshed with each other, the outer sides of the 2 second gears are respectively provided with a connecting rod gear in a rotatable manner, and the gear end of each connecting rod gear is meshed with the adjacent second gear;

a first movable support plate is arranged between 2 connecting rod gears on the same side of the 2 rotating shaft units, a second movable support plate is arranged between 2 connecting rod gears on the other side, and the first movable support plate and the second movable support plate which are in contact with the flexible screen surface of the equipment are respectively connected with the connecting rod ends of the corresponding connecting rod gears and can rotate along with the connecting rod gears;

the supporting shell is internally provided with 2 supporting baffle plates which are arranged in parallel, 2 supporting baffle plates are arranged among the supporting baffle plates and are provided with 2 third gears which are meshed with each other, the outer sides of the 2 third gears are respectively provided with a supporting rotating arm, one end of each supporting rotating arm is positioned among the 2 supporting baffle plates and is meshed with the corresponding third gear, and the other end of each supporting rotating arm extends out of the supporting shell and is connected with a first movable supporting plate or a second movable supporting plate on the same side.

The further improved scheme in the technical scheme is as follows:

1. in the above solution, the respective reference circle diameters of the gear end of the rotating arm, the first gear and the second gear are the same, and the reference circle diameter ratio between the gear end of the connecting rod gear and the second gear is 10: the rotating speed of the connecting rod gear is smaller than that of the rotating arm, the first movable supporting plate and the second movable supporting plate are respectively arranged on the surface of the flexible screen in a back-to-back mode and are respectively provided with 2 groups of first connecting parts and second connecting parts corresponding to 2 rotating shaft units, each group of the first connecting parts and the second connecting parts is close to the connecting rod gear, a sliding groove is formed in each first connecting part, a connecting rod at the end of the connecting rod gear is movably embedded into the sliding groove, an arc-shaped groove is formed in each second connecting part, an arc-shaped convex block matched with the arc-shaped groove is arranged at the connecting end of the rotating arm, when the rotating arm rotates to a closed 90-degree state from a unfolded 0-degree state, the arc-shaped convex block rotates in the arc-shaped groove, and a connecting rod in the sliding groove moves to the other end from one end of the sliding groove.

2. In the above scheme, the rotating arm has a position-avoiding groove in the region between the connecting end and the gear end.

3. In the above scheme, 2 support baffles are arranged in the middle of the support shell.

4. In the above scheme, the first movable support plate and the second movable support plate both extend to be in contact with the adjacent rotating arms.

5. In the above scheme, the connecting end of the rotating arm of each rotating shaft unit is connected with the adjacent first movable supporting plate or the second movable supporting plate.

6. In the above scheme, a middle support plate covers the 2 shells and the inner side of the support shell.

7. In the above scheme, one end of the gear shaft is rotatably embedded into the first end plate of the support shell, the other end of the gear shaft penetrates through the second end plate of the support shell and is fixedly provided with the second gear, and the baffle is arranged on one side, opposite to the support shell, of the second gear and is arranged on the gear shaft.

8. In the above scheme, the two sides of the gear end of the connecting rod gear are respectively provided with a first rotating shaft part and a second rotating shaft part which are protruded outwards, the first rotating shaft part is rotatably embedded into the second end plate of the supporting shell, and the second rotating shaft part is rotatably connected with the baffle.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

1. according to the inward-folding flexible screen electronic equipment, on the basis of realizing the stable opening and closing of 0-180 degrees, the middle part of the flexible screen can be supported in the whole opening and closing process, the paths of 2 movable supporting plates for supporting the flexible screen can be always kept consistent and stable in the multiple opening and closing processes, the screen is prevented from being damaged due to deviation in the opening and closing processes, and the flexible screen is protected from keeping stable performance in the long-term use process; furthermore, be provided with 2 parallel arrangement's supporting baffle in its support shell, 2 install 2 intermeshing's third gear between the supporting baffle, 2 the respective outside of third gear is provided with a support rocking arm, the one end that supports the rocking arm is located between 2 supporting baffle and is connected with the meshing of third gear, the other end that supports the rocking arm stretches out and with the first movable support plate or the second movable support plate swing joint of homonymy in the support shell, supports movable support plate between 2 pivot units, improves the stability of the long-time in-process movable support plate that opens and shuts repeatedly to guarantee its stable support to the flexible screen.

2. The invention relates to an inward folding flexible screen electronic device, wherein the respective reference circle diameters of a gear end of a rotating arm, a first gear and a second gear are the same, and the reference circle diameter ratio between the gear end of a connecting rod gear and the second gear is 10: (5~8) for the rotational speed of connecting rod gear is less than the rotational speed of swinging boom, first movable support board, second movable support board all are provided with 2 groups first connecting portion, the second connecting portion that correspond with 2 pivot units on the surface of flexible screen separately back to, in every first connecting portion of group, the second connecting portion, be close to the connecting rod gear have the spout that the slope set up on the first connecting portion, connecting rod on the connecting rod gear connecting rod end imbeds in the spout movably, it has an arc wall to open on the second connecting portion, have on the connecting end of swinging boom one with arc wall complex arc lug, when the swinging boom rotates to folding 90 state from 0 state of expanding, arc lug rotates in the arc wall, and the connecting rod in the spout removes to the other end from the one end of spout, and the rotational speed of connecting rod gear is less than the rotational speed of swinging boom, makes 2 movable plates have certain angle under the fold condition between the backup pad, and rethread spout, arc wall and arc lug cooperation make the movable support board form the space that more accords with the screen displacement in the course to and let the screen in the turn over the time possess bigger R, the screen in the protection performance of folding performance and be difficult for a long time to produce stably.

Drawings

FIG. 1 is an exploded view of the folded-in flexible screen electronic device of the present invention in an unfolded state;

FIG. 2 is a schematic structural view of the foldable flexible electronic device according to the present invention in a folded state;

FIG. 3 is a schematic view of a partial structure of an electronic device with a folded-in flexible screen according to the present invention in an unfolded state;

FIG. 4 is a front view of a partial structure of an unfolded state of the internally-folded flexible-screen electronic device of the present invention;

FIG. 5 is a front view of a partial structure of an in-folded flexible screen electronic device of the present invention in a folded state;

FIG. 6 is a partial structural cross-sectional view of the fold-in flexible screen electronic device of the present invention in an expanded state;

FIG. 7 is a first schematic structural diagram of a rotating shaft unit in the internally-folded flexible-screen electronic device according to the present invention;

FIG. 8 is a schematic structural diagram of a rotating shaft unit in the internally-folded flexible-screen electronic device according to the present invention;

FIG. 9 is a first schematic view of a hinge unit of the foldable electronic device according to the present invention;

FIG. 10 is a schematic diagram of a second exploded view of a hinge unit of the flexible-screen electronic device of the present invention;

FIG. 11 is a schematic view of a portion of a folded-in flexible screen electronic device of the present invention;

FIG. 12 is an exploded view of a portion of the inner fold flexible screen electronics of the present invention;

FIG. 13 is a schematic view of a first schematic view of a partial structure of the internally folded flexible screen electronic device according to the present invention;

FIG. 14 is a schematic diagram of a second schematic view of a partial structure of the foldable electronic device according to the present invention;

FIG. 15 is a schematic diagram of a third schematic view of a partial structure of the internally folded flexible screen electronic device of the present invention;

fig. 16 is a schematic view of a partial structure of the foldable flexible screen electronic device of the present invention.

In the above drawings: 1. a support housing; 2. a pin; 3. a gear shaft; 4. a rotating arm; 41. a gear end; 42. a connecting end; 43. a second boss; 44. a second recess; 45. an arc-shaped bump; 46. a position avoiding groove; 5. a first gear; 6. a second gear; 7. a connecting rod gear; 71. a gear end; 72. a connecting rod end; 73. a first shaft portion; 74. a second rotating shaft part; 81. a first movable support plate; 82. a second movable support plate; 801. a first connection portion; 802. a second connecting portion; 803. a chute; 804. an arc-shaped slot; 91. a stopping sheet; 92. a spring; 101. a first torsion piece; 102. a second torque plate; 103. a third torque plate; 104. a stop buckle sheet; 11. a support frame; 111. a first boss portion; 112. a first recess; 12. a baffle plate; 13. a support baffle; 14. a third gear; 15. a support rotating arm; 16. a rotation shaft unit; 17. a support housing; 18. a middle support plate; 19. a first rotating case; 20. a second rotating case; 21. a flexible screen.

Detailed Description

Example 1: an inner folding type flexible screen electronic device comprises 2 rotating shaft units 16 with shells 1, a supporting shell 17 connected between the shells 1 of the 2 rotating shaft units 16, a first rotating shell 19 and a second rotating shell 20 which are respectively positioned at two sides of the supporting shell 17, and a flexible screen 21 covering the inner sides of the first rotating shell 19 and the second rotating shell 20;

each of the spindle units 16 further includes: 2 pins 2 installed in a

support shell

1 and 2

gear shafts

3,2 arranged between the 2 pins 2, wherein one ends of the pins 2 are respectively provided with a rotating arm 4, a damping module is arranged between the other end of the pin 2 and the rotating arm 4, gear ends 41 of the rotating arms 4 are rotatably sleeved on the pins 2, a connecting end 42 of each rotating arm 4 is positioned outside the support shell 1 and connected with a first rotating shell 19 or a second rotating shell 20 positioned on the same side, 2 first gears 5 which are meshed with each other are respectively installed on the gear shafts 3 and positioned between the 2 gear ends 41, and each first gear 5 is meshed with an adjacent gear end 41;

the other end of the gear shaft 3 far away from the first gear 5 is provided with a

second gear

6,2 which are meshed with each other, the outer sides of the second gears 6 are respectively and rotatably provided with a connecting rod gear 7, and the gear end 71 of the connecting rod gear 7 is meshed with the adjacent second gear 6;

a first movable supporting plate 81 is arranged between 2 connecting rod gears 7 on the same side of the 2 rotating shaft units 16, a second movable supporting plate 82 is arranged between 2 connecting rod gears 7 on the other side, and the first movable supporting plate 81 and the second movable supporting plate 82 which are in surface contact with the flexible screen 21 of the device are respectively connected with the connecting rod end 72 of the corresponding connecting rod gear 7 and can rotate along with the connecting rod gear 7;

2 support baffles 13,2 arranged in parallel are arranged in the support shell 17, the outer sides of 2 third gears 14,2 which are meshed with each other and are arranged between the support baffles 13 are respectively provided with a support rotating arm 15, one end of each support rotating arm 15 is positioned between the 2 support baffles 13 and is meshed with the third gear 14, and the other end of each support rotating arm 15 extends out of the support shell 17 and is connected with a first movable support plate 81 or a second movable support plate 82 on the same side.

The respective reference circle diameters of the gear end 41 of the rotating arm 4, the first gear 5, and the second gear 6 are all the same, and the reference circle diameter ratio between the gear end 71 of the link gear 7 and the second gear 6 is 10:5~8, the rotation speed of the link gear 7 is less than the rotation speed of the rotary arm 4, the first and second movable support plates 81 and 82 are respectively provided with 2 sets of first and second connection portions 801 and 802 corresponding to the 2 rotary shaft units 16 on the surfaces opposite to the flexible screen 21, in each set of the first and second connection portions 801 and 802, the first connection portion 801 close to the link gear 7 has an inclined sliding groove 803, the link rod at the link end 72 of the link gear 7 is movably embedded in the sliding groove 803, the second connection portion 802 is provided with an arc-shaped groove 804, the connection end 42 of the rotary arm 4 has an arc-shaped protrusion 45 matching with the arc-shaped groove 804, when the rotary arm 4 rotates from an unfolded 0 ° state to a closed 90 ° state, the arc-shaped protrusion 45 rotates in the arc-shaped groove 804, and the link rod in the sliding groove 803 moves from one end of the sliding groove 803 to the other end;

the damping module comprises a stop piece 91 arranged on the pin 2 and a spring 92 sleeved on the pin 2, and the spring 92 in a compressed state is positioned between the stop piece 91 and the gear end 41 of the rotating arm 4; the rotating arm 4 has a space-avoiding groove 46 in the area between the connecting end 42 and the gear end 41.

Example 2: an inner folding type flexible screen electronic device comprises 2 rotating shaft units 16 with shells 1, a supporting shell 17 connected between the shells 1 of the 2 rotating shaft units 16, a first rotating shell 19 and a second rotating shell 20 which are respectively positioned at two sides of the supporting shell 17, and a flexible screen 21 covering the inner sides of the first rotating shell 19 and the second rotating shell 20;

each of the spindle units 16 further includes: 2 pins 2 installed in a

support shell

1 and 2

gear shafts

the other end of the gear shaft 3, which is far away from the first gear 5, is provided with a

second gear

6,2 which are meshed with each other, the outer sides of the second gears 6 are respectively provided with a connecting rod gear 7 in a rotatable manner, and the gear end 71 of the connecting rod gear 7 is meshed with the adjacent second gear 6;

the supporting shell 17 is internally provided with 2 supporting baffles 13,2 which are arranged in parallel, the outer sides of 2 third gears 14,2 which are meshed with each other and are arranged between the supporting baffles 13 are respectively provided with a supporting rotating arm 15, one end of each supporting rotating arm 15 is positioned between the 2 supporting baffles 13 and is meshed with the third gear 14, the other end of each supporting rotating arm 15 extends out of the supporting shell 17 and is connected with a first movable supporting plate 81 or a second movable supporting plate 82 on the same side, and the supporting rotating arms 15 are movably connected with the first movable supporting plate 81 or the second movable supporting plate 82 through arc-shaped grooves which are matched with each other and arc-shaped convex blocks.

2 support baffles 13 are arranged in the middle of the support shell 17; the first movable supporting plate 81 and the second movable supporting plate 82 extend to contact with the adjacent rotating arm 4; the connecting end 42 of the rotating arm 4 of each rotating shaft unit 16 is connected with the adjacent first movable supporting plate 81 or second movable supporting plate 82; a middle support plate 18 covers the inner sides of the 2 shells 1 and the support shell 17;

one end of the gear shaft 3 is rotatably embedded into the first end plate of the support housing 1, the other end of the gear shaft 3 penetrates through the second end plate of the support housing 1 and is fixedly provided with the second gear 6, and a baffle plate 12 is arranged on one side of the second gear 6 opposite to the support housing 1 and is arranged on the gear shaft 3;

the two sides of the gear end 71 of the connecting rod gear 7 are respectively provided with a first rotating shaft part 73 and a second rotating shaft part 74 which are protruded outwards, the first rotating shaft part 73 is rotatablely embedded into the second end plate of the supporting shell 1, and the second rotating shaft part 74 is rotatablely connected with the baffle plate 12;

the damping module comprises a first torque plate 101 connected with 2 pins 2, a second torque plate 102 connected with one gear shaft 3 and the adjacent pin 2, a third torque plate 103 connected with the other gear shaft 3 and the adjacent pin 2 and a stop buckle plate 104, wherein the first torque plate 101, the second torque plate 102 and the third torque plate 103 are arranged in a staggered mode in the axial direction of the pin 2, and the stop buckle plate 104 arranged on the pin 2 or the gear shaft 3 is positioned outside a torque area formed by the first torque plate 101, the second torque plate 102 and the third torque plate 103;

a supporting frame 11 is arranged between the gear end 41 of the rotating arm 4 and the damping module, the middle part of the supporting frame 11 is mounted on the pin 2, the surfaces of the two ends of the supporting frame 11 respectively facing the gear end 41 of the rotating arm 4 are provided with first convex parts 111 arranged at intervals along the circumferential direction, so that first concave parts 112 are formed between the adjacent first convex parts 111, the surface of the gear end 41 of the rotating arm 4 facing the supporting frame 11 is provided with second convex parts 43 used for being embedded into the first concave parts 112, and second concave parts 44 capable of being matched with the first convex parts 111 are formed between the adjacent second convex parts 43.

Referring to fig. 13-16, when the hinge mechanism is folded inward from the unfolded state of fig. 13 to the folded state of fig. 14, the two rotating arms 4 are rotated 90 ° in each direction, and the two movable support plates 81/82 are connected to the rotating arms 4 through the arc-shaped protrusions and the arc-shaped grooves, respectively, so that the movable support plates 81/82 can rotate around the rotation center C of the drawing;

through the arrangement of the reference circle diameter between the connecting rod gear and the second gear and the arrangement of the connecting rod gear and the sliding groove 803 in a matching way, when the rotating arm 4 rotates around the supporting shell at the rotating speed of 1, the rotating speeds of the gear end of the rotating arm and the first gear are both 1, and the first gear is fixed on the gear shaft 3, so that the gear shaft 3 and the second gear 6 on the gear shaft 3 can be driven to rotate at the rotating speed of 1 at the same time;

thereby, 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 arms 4 rotate inward to 90 °, the two rotating arms 4 are parallel, a larger included angle is formed between the two link gears 7, so that the movable supporting plate 81/82 slides to the position B along the sliding groove position a by surrounding the rotating center C, thereby forming a larger accommodating space between the two movable supporting plates 81/82, and the length of the attaching surface of the flexible screen 21 is not changed.

When the inward folding type flexible screen electronic equipment is adopted, on the basis of realizing 0-180-degree stable opening and closing, the middle part of the flexible screen can be supported in the whole opening and closing process, the paths of 2 movable supporting plates for supporting the flexible screen can be kept consistent and stable all the time in the multiple opening and closing processes, the screen is prevented from being damaged due to deviation in the opening and closing processes, and the flexible screen is protected to keep stable performance in the long-term use process;

furthermore, the movable supporting plate is supported among the 2 rotating shaft units, so that the stability of the movable supporting plate in the long-time repeated opening and closing process is improved, and the stable support of the flexible screen is ensured;

further, the rotational speed of connecting rod gear is less than the rotational speed of swinging boom for certain angle has between 2 fly leaf backup pads under the fold condition, and rethread spout, arc wall and arc lug's cooperation makes the space that the movable support board more accords with the screen displacement trend at the in-process formation that opens and shuts, and possess bigger R angle when letting the screen infolding, the stable performance of protection screen in long-time use just is difficult for producing the crease.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a flexible screen electronic equipment of infolding type which characterized in that: the device comprises 2 rotating shaft units (16) with shells (1), supporting shells (17) connected among the shells (1) of the 2 rotating shaft units (16), first rotating shells (19) and second rotating shells (20) respectively positioned at two sides of the supporting shells (17), and flexible screens (21) covering the inner sides of the first rotating shells (19) and the second rotating shells (20);

each of the spindle units (16) further includes: the pin comprises 2 pins (2) arranged in a support shell (1) and 2 gear shafts (3) arranged among the 2 pins (2), wherein one ends of the 2 pins (2) are respectively provided with a rotating arm (4), a damping module is arranged between the other end of the pin (2) and the rotating arm (4), gear ends (41) of the rotating arms (4) are rotatably sleeved on the pins (2), connecting ends (42) of the rotating arms (4) are positioned on the outer side of the support shell (1) and are connected with a first rotating shell (19) or a second rotating shell (20) positioned on the same side, first gears (5) which are meshed with each other are respectively arranged on the 2 gear shafts (3) and positioned among the 2 gear ends (41), and each first gear (5) is meshed with the adjacent gear end (41);

the other end of the gear shaft (3) far away from the first gear (5) is provided with second gears (6) which are meshed with each other, the outer sides of 2 second gears (6) are respectively provided with a connecting rod gear (7) in a rotatable manner, and the gear end (71) of each connecting rod gear (7) is meshed with the adjacent second gear (6);

a first movable supporting plate (81) is arranged between 2 connecting rod gears (7) on the same side of the 2 rotating shaft units (16), a second movable supporting plate (82) is arranged between 2 connecting rod gears (7) on the other side, and the first movable supporting plate (81) and the second movable supporting plate (82) which are in surface contact with the flexible screen (21) of the device are respectively connected with the connecting rod ends (72) of the corresponding connecting rod gears (7) and can rotate along with the connecting rod gears (7);

the supporting shell (17) is internally provided with 2 supporting baffle plates (13) which are arranged in parallel, 2 supporting baffle plates (13) are arranged among the supporting baffle plates (13), 2 third gears (14) which are meshed with each other are arranged on the outer sides of the 2 third gears (14), one end of each supporting rotating arm (15) is positioned among the 2 supporting baffle plates (13) and is meshed with the corresponding third gear (14), and the other end of each supporting rotating arm (15) extends out of the supporting shell (17) and is connected with a first movable supporting plate (81) or a second movable supporting plate (82) on the same side.

2. The fold-in flexible screen electronic device of claim 1, wherein: the respective reference circle diameters of the gear end (41) of the rotating arm (4), the first gear (5) and the second gear (6) are the same, and the reference circle diameter ratio between the gear end (71) of the connecting rod gear (7) and the second gear (6) is 10: (5~8) so that the rotation speed of the link gear (7) is less than that of the rotating arm (4), each of the first movable support plate (81) and the second movable support plate (82) is provided with 2 sets of first connecting portions (801) and second connecting portions (802) corresponding to 2 rotating shaft units (16) on the surface opposite to the flexible screen (21), a chute (803) obliquely arranged on the first connecting portion (801) close to the link gear (7) is arranged in each of the first connecting portion (801) and the second connecting portion (802), the link at the link end (72) of the link gear (7) is movably embedded into the chute (803), an arc-shaped groove (804) is formed in the second connecting portion (802), an arc-shaped bump (45) matched with the arc-shaped groove (804) is formed in the connecting end (42) of the rotating arm (4), and when the rotating arm (4) rotates from an unfolded 0 ° state to a closed 90 ° state, the arc-shaped bump (45) rotates in the arc-shaped groove (804), and the link moves from one end of the chute (803 to the other end of the chute (803).

3. The fold-in flexible screen electronic device of claim 2, wherein: the rotating arm (4) is provided with a position avoiding groove (46) in the area between the connecting end (42) and the gear end (41).

4. The fold-in flexible screen electronic device of any one of claims 1~3 wherein: the 2 support baffles (13) are arranged in the middle of the support shell (17).

5. The fold-in flexible screen electronic device of any one of claims 1~3 wherein: the first movable supporting plate (81) and the second movable supporting plate (82) extend to be in contact with the adjacent rotating arms (4).

6. The fold-in flexible screen electronic device of any of claim 1~3 wherein: the connecting end (42) of the rotating arm (4) of each rotating shaft unit (16) is connected with the adjacent first movable supporting plate (81) or second movable supporting plate (82).

7. The fold-in flexible screen electronic device of claim 1, wherein: a middle support plate (18) covers the inner sides of the 2 shells (1) and the support shell (17).

8. The fold-in flexible screen electronic device of any one of claims 1~3 wherein: one end of the gear shaft (3) is rotatably embedded into the first end plate of the supporting shell (1), the other end of the gear shaft (3) penetrates through the second end plate of the supporting shell (1) and is fixedly provided with the second gear (6), and a baffle (12) is arranged on one side, back to the supporting shell (1), of the second gear (6) and is installed on the gear shaft (3).

9. The fold-in flexible screen electronic device of claim 8, wherein: two sides of a gear end (71) of the connecting rod gear (7) are respectively provided with a first rotating shaft part (73) and a second rotating shaft part (74) which are protruded outwards, the first rotating shaft part (73) is rotatably embedded into a second end plate of the supporting shell (1), and the second rotating shaft part (74) is rotatably connected with the baffle plate (12).