CN216519159U

CN216519159U - Synchronous turnover damping mechanism for folding flexible screen and folding hinge

Info

Publication number: CN216519159U
Application number: CN202123183340.7U
Authority: CN
Inventors: 陈荣; 田宏帅; 朱卫东
Original assignee: Jiangsu Gian Technology Co Ltd
Current assignee: Jiangsu Gian Technology Co Ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-05-13
Anticipated expiration: 2031-12-17

Abstract

The utility model relates to a synchronous turnover damping mechanism for folding a flexible screen and a folding hinge, wherein the synchronous turnover damping mechanism is provided with a synchronous gear assembly and a damping assembly which are arranged on a mounting base; the synchronous gear assembly comprises a plurality of gears which are in sequential transmission fit, the gears on two sides in each gear are synchronous gears, and other gears are transmission gears; each synchronous gear is rotatably arranged on one assembly long shaft; the damping assembly comprises a first damping convex tooth, a friction plate, a first damping frame, a second damping frame, a damping spring and a limiting frame which are arranged at the left end and the right end of the synchronizing gear and coaxially rotate with the synchronizing gear, and meanwhile the first damping convex tooth, the friction plate, the first damping frame, the second damping frame, the damping spring and the limiting frame are mutually matched to realize damping rotation fit. The synchronous gear assembly and the damping assembly are effectively integrated, mechanical parts are greatly reduced, and the damping hand feeling can be effectively improved.

Description

Synchronous turnover damping mechanism for folding flexible screen and folding hinge

Technical Field

The utility model relates to electronic equipment parts, in particular to a synchronous turnover damping mechanism for folding a flexible screen and a folding hinge.

Background

The flexible display, i.e. the flexible OLED, is formed by laser lift-off post-curing for a hard screen, and has the advantages of being bendable, light and thin, and lightweight. With the continuous development of flexible display technology, the flexible screen will gradually become the popular trend of downstream terminals. Currently, flexible screens are more applied to traditional terminals, such as smart phones, televisions and computer display screens. Among them, the most demanding flexible applications of flexible screens are mainly focused on mobile terminals such as smartphones, tablet computers, and the like.

Because the mobile terminal is designed to be folded, the flexible screen can be folded, so that the size and the large screen of the mobile terminal are perfectly combined. In order to meet the folding requirements of the flexible screen, the key point is whether the design of the hinge mechanism is reasonable.

At present, different mechanical components are often required to be designed to meet the requirements in order to realize synchronous overturning, damping hand feeling and the like in a limited space by adopting a hinge mechanism of a mobile terminal of a flexible screen, and the mechanical components occupy a large amount of installation space.

SUMMERY OF THE UTILITY MODEL

The utility model provides a synchronous turnover damping mechanism for folding a flexible screen, which can effectively integrate a synchronous gear assembly and a damping assembly for realizing synchronous turnover, greatly reduce mechanical parts and realize suspension installation of the synchronous gear assembly and the damping assembly.

The technical scheme for realizing the first purpose of the utility model is as follows: the synchronous turnover damping mechanism for folding the flexible screen is provided with a synchronous gear assembly and a damping assembly which are arranged on an installation base; the synchronous gear assembly comprises a plurality of gears which are in sequential transmission fit, the gears on two sides in each gear are synchronous gears, and other gears are transmission gears; the synchronous gear synchronously rotates under the transmission coordination of the transmission gear; the synchronous gear is limited to move along the direction of the rotation axis thereof through limit matching; each synchronous gear is rotatably arranged on one assembly long shaft;

the damping assembly comprises first damping convex teeth, friction plates, a first damping frame, a second damping frame, a damping spring and a limiting frame, wherein the first damping convex teeth, the friction plates, the first damping frame, the second damping frame, the damping spring and the limiting frame are arranged at the left end and the right end of the synchronous gear and rotate coaxially with the synchronous gear; the end surfaces of the first damping frame and the second damping frame, which are opposite to the synchronous gear, are respectively provided with second damping convex teeth which are correspondingly matched with the first damping convex teeth one by one; through holes for the long shafts to pass through are respectively formed in the two ends of the limiting frame; each assembly long shaft sequentially penetrates through the friction plate, the corresponding second damping convex tooth on the first damping frame, the corresponding synchronous gear, the corresponding second damping convex tooth on the second damping frame, the damping spring and the corresponding through hole on the limiting frame from left to right; the friction plate is rotatably arranged on the assembly long shaft and can slide on the assembly long shaft; the friction plate and the synchronous gear on the corresponding side are in direct drive connection or indirect drive connection to form synchronous rotation; the limiting frame is arranged at the right end of the assembly long shaft in a sliding manner; the left end of the assembly long shaft is provided with a first limiting table which is arranged on the mounting base in a sliding manner; the right end of the assembly long shaft is provided with a second limiting table for limiting the limiting frame to be separated from the assembly long shaft; one end of the damping spring acts on the second damping frame and enables the second damping frame to slide leftwards, and the other end group of the damping spring acts on the limiting frame and enables the limiting frame to pull the assembly long shaft rightwards; the first limiting table promotes the friction plate to form friction fit with the first damping frame under the trend that the assembly long shaft slides rightwards, and the friction plate promotes the first damping frame to slide leftwards.

Further, the damping assembly further comprises a friction enhancing frame; two ends of the friction enhancement frame are respectively arranged on the two assembly long shafts in a sliding manner; the friction enhancing frame is positioned between the first limiting table and the friction plate; the first limiting table promotes the friction enhancing frame, the friction plate and the first damping frame to form friction fit with each other under the trend that the assembly long shaft slides rightwards.

Furthermore, a sliding groove extending along the extension direction of the assembly long shaft is arranged on the end face, opposite to the friction plate, of the synchronous gear; the end face of the friction plate, which is opposite to the synchronous gear, is provided with a sliding block extending along the extension direction of the assembly long shaft; the sliding block is arranged in the sliding groove in a sliding mode.

Further, the limiting frame comprises a limiting piece and a clamping piece; mounting through holes for the second limiting table to pass through are formed in the positions, corresponding to the two assembly long shafts, of the two ends of the limiting piece; two ends of the clamping piece are provided with open clamping grooves corresponding to the two assembly long shafts; the limiting piece is sleeved on the assembly long shaft in a sliding manner; the clamping piece is clamped on the assembly long shaft and positioned between the limiting piece and the second limiting table through the matching of the assembly long shaft and the opening clamping groove; the opening clamping groove is matched with the second limiting table to limit the limiting piece and the clamping piece to be separated along the extending direction of the assembly long shaft.

Furthermore, at least one clamping column parallel to the assembly long axis is arranged on the end surface of the limiting piece opposite to the clamping piece; the clamping piece is provided with opening clamping grooves which correspond to the clamping columns one by one and are used for clamping the clamping piece on the clamping columns.

Furthermore, the free end of the clamping column is a ball head.

Furthermore, the synchronous gear assembly comprises four gears with mutually parallel rotation axes and sequentially matched transmission, the gears at two sides are synchronous gears, and the two gears in the middle are transmission gears; the transmission gear comprises a gear body and rotating shafts positioned at the left end and the right end of the gear body; the transmission gear is rotatably arranged on the first damping frame and the second damping frame through a rotating shaft, and the first damping frame and the second damping frame are in sliding fit with the rotating shaft; a reinforced damping spring is also arranged between the second damping frame and the limiting frame;

a first sleeving column is arranged on the end face, opposite to the limiting frame, of the second damping frame, or the transmission gear penetrates through the rotating shaft part of the second damping frame to form the first sleeving column; a second sleeving column is arranged on the limiting frame corresponding to the first sleeving column; the two ends of the reinforced damping spring are respectively sleeved on the first sleeved column and the second sleeved column and respectively act on the second damping frame and the limiting frame.

The second purpose of the utility model is to provide a folding hinge adopting the synchronous turnover damping mechanism, which has small occupied installation space and good damping effect, and can particularly realize free stop of 30-150 degrees.

The technical scheme for realizing the second purpose of the utility model is as follows: the folding hinge is provided with a mounting base, and both sides of the mounting base are rotatably provided with turnover assemblies; the synchronous transmission damping mechanism for the flexible screen folding is also provided; the turnover assemblies on two sides of the mounting base are respectively in transmission fit with the synchronous gears on the corresponding sides.

Further, the synchronous gear is a part of the overturning component on the corresponding side.

Further, a hinge mounting seat is also arranged; an installation chamber for installing a folding hinge is arranged in the hinge installation seat; the wall of the mounting chamber at one end of the clamping column is provided with a guide spherical surface and a clamping hole; the ball head at the free end of the clamping column is clamped into the clamping hole under the guidance of the guide spherical surface.

The utility model has the positive effects that: the synchronous gear assembly and the damping assembly are integrally designed, so that parts are greatly reduced. Meanwhile, the assembly long shaft forms ingenious suspension type fixed installation by limiting the axial movement of the synchronous gear, wherein the synchronous gear assembly does not need to use a retainer, and the first damping frame and the second damping frame on the two sides can form damping matching and can also play a role of the retainer; meanwhile, the damping assembly does not need to be fixedly arranged on the hinge mounting seat, so that parts and mounting steps are omitted.

(2) According to the damping assembly, the damping hand feeling can be effectively improved through the matching of the two groups of first damping convex teeth and the second damping convex teeth and the friction matching of the friction plate, the first damping frame and the friction reinforcing frame, so that a better retaining force is provided for the free stop of the folding hinge between 30-150 degrees.

(3) The friction plate is connected with the sliding groove in a matched mode through the sliding block, the requirement of suspension type fixed installation can be met, axial sliding allowance is provided, and meanwhile the driving force for rotation of the friction plate can be guaranteed.

(4) The limiting frame adopts a limiting piece and a clamping piece, wherein the limiting piece can be conveniently sleeved and provides a larger supporting surface for the damping spring; and the clamping piece can better limit the movement of the limiting frame in the radial direction of the long assembly shaft, so that the installation stability of the limiting frame is improved.

(5) According to the utility model, the clamping effect of the clamping piece can be further improved by matching the opening clamping groove on the clamping piece with the clamping column.

(6) According to the utility model, the free end of the clamping column adopts the ball head, when the ball head is matched with the guide spherical surface on the hinge mounting seat, the limiting frame can be conveniently clamped, the clamping effect can be further improved through the matching of the clamping column and the clamping hole, and the separation risk of the folding hinge and the hinge mounting seat is effectively reduced.

(7) The damping force can be further improved by reinforcing the damping spring.

(8) According to the design scheme of the first sleeving column and the second sleeving column, the number of parts can be reduced, so that the overall weight of the folding hinge is reduced, and a certain favorable condition is provided for reducing the weight of the mobile terminal.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which

FIG. 1 is a schematic structural view of a synchronous turnover damping mechanism for flexible screen folding according to the present invention;

FIG. 2 is a front view of the simultaneous flip damping mechanism for flexible screen folding of the present invention;

FIG. 3 is a right side view of the simultaneous flip damping mechanism for flexible screen folding of the present invention;

FIG. 4 is a schematic view of the folding hinge of the present invention;

FIG. 5 is a cross-sectional view of the folding hinge of the present invention;

FIG. 6 is an enlarged view taken at A in FIG. 5;

FIG. 7 is a schematic structural diagram of a limiting element according to the present invention;

FIG. 8 is a schematic view of the structure of the clamping member of the present invention;

FIG. 9 is a schematic view of the engagement of the synchronous flipping damping mechanism with the hinge mount of the present invention;

FIG. 10 is an enlarged view at B of FIG. 9;

FIG. 11 is an assembly view of a reinforcing damping spring in embodiment 1 of the present invention;

fig. 12 is an assembly view of a reinforcing damping spring in embodiment 2 of the present invention.

Detailed Description

Referring to fig. 1 to 10, the synchronous turnover damping mechanism for flexible screen folding in the present invention has a synchronous gear assembly 2 and a damping assembly 3 provided on a mounting base 1; the synchronous gear assembly 2 comprises four gears with mutually parallel rotation axes and sequentially matched transmission, the gears at two sides are synchronous gears 21, and the two gears in the middle are transmission gears 22; the synchronous gear 21 synchronously rotates under the transmission coordination of the transmission gear 22; the synchronous gear 21 is limited to move along the direction of the rotation axis thereof through limit fit; each synchronizing gear 21 is rotatably arranged on one assembly long shaft 4;

the damping component 3 comprises first damping convex teeth 31, a friction enhancing frame 32, a friction plate 33, a first damping frame 34, a second damping frame 35, a damping spring 36 and a limiting frame 37, wherein the first damping convex teeth 31 are arranged at the left end and the right end of the synchronous gear 21 and rotate coaxially with the synchronous gear 21; the end surfaces of the first damping frame 34 and the second damping frame 35, which are opposite to the synchronous gear 21, are respectively provided with second damping convex teeth 38 which are correspondingly matched with the first damping convex teeth 31 one by one; through holes for the corresponding side assembly long shafts 4 to pass through are respectively formed in the two ends of the limiting frame 37; two ends of the friction enhancing frame 32 are respectively arranged on the two assembly long shafts 4 in a sliding manner; each assembly long shaft 4 sequentially passes through the friction enhancing frame 32, the friction plate 33, the corresponding second damping convex tooth 35 on the first damping frame 34, the corresponding synchronous gear 21, the corresponding second damping convex tooth 38 on the second damping frame 35, the damping spring 36 and the corresponding through hole on the limiting frame 37 from left to right; the friction plate 33 is rotatably arranged on the assembly long shaft 4 and can slide on the assembly long shaft 4; a sliding groove 211 extending along the extending direction of the assembly long shaft 4 is arranged on the end face, opposite to the friction plate 33, of the synchronizing gear 21; a slide block 331 extending along the extending direction of the assembly long shaft 4 is arranged on the end face of the friction plate 33 facing the synchronous gear 21; the sliding block 331 is slidably disposed in the sliding groove 211, but cannot be separated from the sliding groove 211; the friction plate 33 is driven by the synchronous gear 21 on the corresponding side to rotate under the matching of the sliding block 331 and the sliding groove 211; the limiting frame 37 is arranged at the right end of the assembly long shaft 4 in a sliding manner; the left end of the assembly long shaft 4 is provided with a first limiting table 41 which is arranged on the mounting base 1 in a sliding manner; the right end of the assembly long shaft 4 is provided with a second limiting table 42 for limiting the limiting frame 37 to be separated from the assembly long shaft 4; one end of the damping spring 36 acts on the second damping frame 35 and causes the second damping frame 35 to slide leftwards, and the other end group of the damping spring 36 acts on the limiting frame 37 and causes the limiting frame 37 to pull the assembly long shaft 4 rightwards; the first limiting table 41 urges the friction enhancing frame 32 to be attached to the friction plate 33 under the tendency that the assembly long shaft 4 slides rightwards, the friction plate 33 is attached to the first damping frame 34, and along with the rotation of the friction plate 33, the left side and the right side of the friction plate 33 are respectively in friction fit with the friction enhancing frame 32 and the first damping frame 34.

The limiting frame 37 comprises a limiting piece 371 and a clamping piece 372; two ends of the limiting piece 371 are provided with mounting through holes corresponding to the two assembly long shafts 4, through which the second limiting table 42 can pass; the end surface of the limiting piece 371 opposite to the clamping piece 372 is provided with at least one clamping column 371-1 parallel to the assembly long axis 4, and the embodiment adopts two clamping columns 371-1; the clamping piece 372 is provided with open slots 372-1 corresponding to the clamping columns 371-1 one by one, and two ends of the clamping piece 372 are provided with open slots 372-1 corresponding to the two assembly long shafts 4; the limiting piece 371 is slidably sleeved on the assembly long shaft 4; the clamping piece 372 is matched with the long assembly shaft 4 and the clamping column 371-1 in a clamping mode through the opening clamping groove 372-1, and the clamping piece 372 is clamped between the limiting piece 371 and the second limiting table 42. The open slots 372-1 at the two ends of the clamping piece 372 can also be used for hanging only, namely, the clamping piece is not clamped with the assembly long shaft 4 and is only used for hanging and positioning.

The opening slot 372-1 is matched with the limiting stop 371 and the clamping fitting 372 of the second limiting table 42 to limit the separation along the extending direction of the assembling long shaft 4.

The free end of the clamping column 371-1 is a ball head.

The transmission gear 22 comprises a gear body and rotating shafts positioned at the left end and the right end of the gear body; the transmission gear 22 is rotatably arranged on the first damping frame 34 and the second damping frame 35 through a rotating shaft, and the first damping frame 34 and the second damping frame 35 are in sliding fit with the rotating shaft; and a reinforced damping spring 39 is also arranged between the second damping frame 34 and the limiting frame 37.

Referring to fig. 11, the transmission gear 22 passes through the rotating shaft part of the second damping frame 35 to form a first sleeved column 221; the limiting body 371 on the limiting frame 37 is provided with a second sleeving column 371-2 corresponding to the first sleeving column 221; the two ends of the reinforced damping spring 39 are respectively sleeved on the first sleeved column 221 and the second sleeved column 371-2 and respectively act on the second damping frame 35 and the limiting frame 37.

The folding hinge is provided with a mounting base 1, and the front side and the rear side of the mounting base 1 are both rotatably provided with turnover components 5; the synchronous transmission damping mechanism for the flexible screen folding is also provided; the turnover assemblies 5 on two sides of the mounting base 1 are respectively in transmission fit with the synchronous gears 21 on the corresponding sides.

The synchronizing gear 21 in this embodiment is part of the reversing assembly 5 on the corresponding side; since the reversing unit 5 is restricted from moving in the direction of its rotation axis, the synchronizing gear 21 is also restricted from moving in the direction of its rotation axis.

Meanwhile, a hinge mounting seat 6 is also arranged; an installation chamber for installing a folding hinge is arranged in the hinge installation seat 6; a guide spherical surface 62 and a clamping hole 63 are arranged on a chamber wall 61 of the mounting chamber at one end of the clamping column 371-1; the ball of the free end of the clamping column 371-1 is clamped into the clamping hole 63 under the guidance of the guiding spherical surface 62.

The working process of the synchronous overturning damping mechanism is as follows:

the overturning assembly 5 drives the synchronizing gear 21 to rotate, the first damping convex teeth 31 are continuously meshed with the corresponding second damping convex teeth 38 along with the sum rotation of the synchronizing gear 21, and the first damping frames 34 are pushed to slide leftwards and the second damping frames 35 are pushed to slide rightwards along with the continuous meshing of the first damping convex teeth 31 and the second damping convex teeth 38; the second damping frame 35 slides rightwards to compress the damping spring 36 and the reinforced damping spring 39, the damping spring 36 and the reinforced damping spring 39 act on the limiting frame 37, the limiting frame 37 acts on the second limiting table 42 to enable the assembly long shaft 4 to slide rightwards, the first limiting table 41 enables the friction enhancing frame 32 and the friction plate 33 to form friction fit along with the rightward sliding of the assembly long shaft 4, the friction plate 33 and the first damping frame 34 form friction fit, the friction plate 33 enables the first damping frame 34 to slide rightwards, the first damping frame 34 has a leftward sliding trend under the action of the first damping convex teeth 31, and therefore the friction plate 33 is subjected to bidirectional clamping force, and the friction force among the friction enhancing frame 32, the friction plate 33 and the first damping frame 34 is greatly improved.

(example 2)

Referring to fig. 12, the end surface of the second damping frame 35 facing the limiting frame is provided with a first assembling column 221, and other technical features are the same as those of embodiment 1.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A synchronous turnover damping mechanism for folding a flexible screen is provided with a synchronous gear assembly and a damping assembly which are arranged on a mounting base; the method is characterized in that: the synchronous gear assembly comprises a plurality of gears which are in sequential transmission fit, the gears on two sides in each gear are synchronous gears, and other gears are transmission gears; the synchronous gear synchronously rotates under the transmission coordination of the transmission gear; the synchronous gear is limited to move along the direction of the rotation axis thereof through limit matching; each synchronous gear is rotatably arranged on one assembly long shaft;

the damping assembly comprises first damping convex teeth, friction plates, a first damping frame, a second damping frame, a damping spring and a limiting frame, wherein the first damping convex teeth, the friction plates, the first damping frame, the second damping frame, the damping spring and the limiting frame are arranged at the left end and the right end of the synchronous gear and rotate coaxially with the synchronous gear; the end surfaces of the first damping frame and the second damping frame, which are opposite to the synchronous gear, are respectively provided with second damping convex teeth which are correspondingly matched with the first damping convex teeth one by one; through holes for the long shafts to pass through are respectively formed in the two ends of the limiting frame; each assembly long shaft sequentially penetrates through the friction plate, the corresponding second damping convex tooth on the first damping frame, the corresponding synchronous gear, the corresponding second damping convex tooth on the second damping frame, the damping spring and the corresponding through hole on the limiting frame from left to right; the friction plate is rotatably arranged on the assembly long shaft and can slide on the assembly long shaft; the friction plate and the synchronous gear on the corresponding side are in direct drive connection or indirect drive connection to form synchronous rotation; the limiting frame is arranged at the right end of the assembly long shaft in a sliding manner; the left end of the assembly long shaft is provided with a first limiting table which is arranged on the mounting base in a sliding manner; a second limiting table used for limiting the limiting frame to be separated from the assembly long shaft is arranged at the right end of the assembly long shaft; one end of the damping spring acts on the second damping frame and enables the second damping frame to slide leftwards, and the other end group of the damping spring acts on the limiting frame and enables the limiting frame to pull the assembly long shaft rightwards; the first limiting table promotes the friction plate to form friction fit with the first damping frame under the trend that the assembly long shaft slides rightwards, and the friction plate promotes the first damping frame to slide leftwards.

2. A synchronized roll-over damping mechanism for flexible screen folding according to claim 1, wherein: the damping assembly further comprises a friction enhancing frame; two ends of the friction enhancement frame are respectively arranged on the two assembly long shafts in a sliding manner; the friction enhancing frame is positioned between the first limiting table and the friction plate; the first limiting table promotes the friction enhancing frame, the friction plate and the first damping frame to form friction fit with each other under the trend that the assembly long shaft slides rightwards.

3. A synchronized roll-over damping mechanism for flexible screen folding according to claim 1, wherein: the end face of the synchronous gear, which is opposite to the friction plate, is provided with a chute extending along the extension direction of the assembly long shaft; the end face of the friction plate, which is opposite to the synchronous gear, is provided with a sliding block extending along the extension direction of the assembly long shaft; the sliding block is arranged in the sliding groove in a sliding mode.

4. A synchronized flip damping mechanism for flexible screen folding according to claim 1 or 2 or 3, characterized in that: the limiting frame comprises a limiting piece and a clamping piece; mounting through holes for the second limiting table to pass through are formed in the positions, corresponding to the two assembly long shafts, of the two ends of the limiting piece; two ends of the clamping piece are provided with open clamping grooves corresponding to the two assembly long shafts; the limiting piece is sleeved on the assembly long shaft in a sliding manner; the clamping piece is clamped on the assembly long shaft and positioned between the limiting piece and the second limiting table through the matching of the assembly long shaft and the opening clamping groove; the opening clamping groove is matched with the second limiting table to limit the limiting piece and the clamping piece to be separated along the extending direction of the assembly long shaft.

5. A synchronized roll-over damping mechanism for flexible screen folding according to claim 4, wherein: at least one clamping column parallel to the assembly long axis is arranged on the end face of the limiting piece opposite to the clamping piece; the clamping piece is provided with opening clamping grooves which correspond to the clamping columns one by one and are used for clamping the clamping piece on the clamping columns.

6. A synchronized roll-over damping mechanism for flexible screen folding according to claim 5, wherein: the free end of the clamping column is a ball head.

7. A synchronized flip damping mechanism for flexible screen folding according to claim 1 or 2 or 3, characterized in that: the synchronous gear component comprises four gears, the rotation axes of the gears are parallel to each other and are in sequential transmission fit with each other, the gears on two sides are synchronous gears, and the two gears in the middle are transmission gears; the transmission gear comprises a gear body and rotating shafts positioned at the left end and the right end of the gear body; the transmission gear is rotatably arranged on the first damping frame and the second damping frame through a rotating shaft, and the first damping frame and the second damping frame are in sliding fit with the rotating shaft; a reinforced damping spring is also arranged between the second damping frame and the limiting frame;

8. A synchronized roll-over damping mechanism for flexible screen folding according to claim 7, wherein: the limiting frame comprises a limiting piece and a clamping piece; mounting through holes for the second limiting table to pass through are formed in the positions, corresponding to the two assembly long shafts, of the two ends of the limiting piece; two ends of the clamping piece are provided with open clamping grooves corresponding to the two assembly long shafts; the limiting piece is sleeved on the assembly long shaft in a sliding manner; the clamping piece is clamped on the assembly long shaft and positioned between the limiting piece and the second limiting table through the matching of the assembly long shaft and the opening clamping groove; the opening clamping groove is matched with the second limiting table to limit the limiting piece and the clamping piece to be separated along the extending direction of the assembly long shaft.

9. A synchronized roll-over damping mechanism for flexible screen folding according to claim 8, wherein: at least one clamping column parallel to the assembly long shaft is arranged on the end face of the limiting piece opposite to the clamping piece; the clamping piece is provided with opening clamping grooves which correspond to the clamping columns one by one and are used for clamping the clamping piece on the clamping columns.

10. A synchronized roll-over damping mechanism for flexible screen folding according to claim 9, wherein: the free end of the clamping column is a ball head.

11. A folding hinge is provided with a mounting base, wherein both sides of the mounting base are rotatably provided with turnover components; the method is characterized in that: also has a synchronous flip damping mechanism for flexible screen folding as claimed in claim 1 or 2 or 3; the turnover assemblies on two sides of the mounting base are respectively in transmission fit with the synchronous gears on the corresponding sides.

12. A folding hinge according to claim 11, characterized in that: the synchronizing gear is part of the reversing assembly on the corresponding side.

13. A folding hinge is provided with a mounting base, wherein both sides of the mounting base are rotatably provided with turnover components; the method is characterized in that: a synchronous turnover damping mechanism for the flexible screen folding as claimed in claim 6; the overturning components on the two sides of the mounting base are respectively in transmission fit with the synchronous gears on the corresponding sides;

a hinge mounting seat is also arranged; an installation chamber for installing a folding hinge is arranged in the hinge installation seat; the wall of the mounting chamber at one end of the clamping column is provided with a guide spherical surface and a clamping hole; the ball head at the free end of the clamping column is clamped into the clamping hole under the guidance of the guide spherical surface.