A winding device and display device

Abstract

The application discloses a winding device and a display device, a fixed machine shell, a first movable machine shell movably arranged on the fixed machine shell along a first direction of the fixed machine shell, the first movable machine shell comprising a first back movable support frame and a first synchronous guide rod, a second movable machine shell movably arranged on the fixed machine shell along the first direction of the fixed machine shell, the second movable machine shell comprising a second back movable support frame and a second synchronous guide rod, and a synchronous gear arranged on the back of the fixed machine shell, the synchronous gear being located between the first synchronous guide rod and the second synchronous guide rod, and the synchronous gear being engaged with the first synchronous gear rack and the second synchronous gear rack respectively. The first movable machine shell and the second movable machine shell are synchronously moved through the synchronous gear, so that the winding and unfolding operations on both sides of the winding device are synchronously completed, and the user experience is improved.

Description

Technical Field

[0001] This application belongs to the field of display device technology, and particularly relates to a winding device and a display device. Background Technology

[0002] Flexible display devices, with their bendable and rollable characteristics, are gradually gaining popularity among consumers. However, existing flexible display devices suffer from poor user experience due to asynchronous relative movement of the two sides of the under-screen movable support frame during the rolling or unfolding process.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0004] This application aims to at least partially solve the technical problem of poor user experience caused by asynchronous relative movement on both sides of the under-screen movable support frame of flexible display devices. To this end, this application provides a winding device and a display device.

[0005] This application provides a winding device comprising: a fixed housing; a first movable housing movably disposed on the fixed housing along a first direction, the first movable housing including a first back movable support frame and a first synchronous guide rod, the first back movable support frame being located on the back of the fixed housing, the first synchronous guide rod being disposed on the first back movable support frame and located on the back of the fixed housing, the first synchronous guide rod having a first synchronous rack; a second movable housing movably disposed on the fixed housing along the first direction, the second movable housing including a second back movable support frame and a second synchronous guide rod, the second back movable support frame being located on the back of the fixed housing, the second synchronous guide rod being disposed on the second back movable support frame and located on the back of the fixed housing, the second synchronous guide rod having a second synchronous rack; and a synchronous gear disposed on the back of the fixed housing, the synchronous gear being located between the first synchronous guide rod and the second synchronous guide rod, the synchronous gear meshing with the first synchronous rack and the second synchronous rack respectively.

[0006] In some embodiments, the number of the first synchronization guide rod is one or more, and the number of the second synchronization guide rod is one or more.

[0007] In some embodiments, the length of the first synchronizing guide rod is less than or equal to the winding length of the winding device in the winding state; the length of the second synchronizing guide rod is less than or equal to the winding length of the winding device in the winding state; and the sum of the lengths of the first synchronizing guide rod and the second synchronizing guide rod is greater than the unfolded length of the winding device in the unfolded state.

[0008] In some embodiments, the length of the first synchronizing rack is greater than or equal to the distance the first movable housing moves relative to the fixed housing; the length of the second synchronizing rack is greater than or equal to the distance the second movable housing moves relative to the fixed housing.

[0009] In some embodiments, the winding device further includes a rotation damper disposed on the back side of the fixed housing, and the synchronizing gear is disposed on the back side of the fixed housing via the rotation damper.

[0010] In some embodiments, the winding device further includes: a guide rail assembly, comprising a linear guide rail and a slider; wherein the linear guide rail is disposed on the back side of the fixed housing along a first direction of the fixed housing, the slider is respectively disposed on the first back movable support frame and the second back movable support frame, and the slider is slidably connected to the linear guide rail; or, the linear guide rail is respectively disposed on the first back movable support frame and the second back movable support frame along the first direction of the fixed housing, the slider is disposed on the back side of the fixed housing, and the slider is slidably connected to the linear guide rail.

[0011] In some embodiments, the winding device further includes a self-locking assembly, comprising a control key, a self-locking linkage, and a self-locking stop; wherein the control key is movably disposed on the outer side wall of the fixed housing, the self-locking linkage is linked to the control key, the self-locking linkage is disposed on the inner side wall of the fixed housing and located on the back side of the fixed housing, and the self-locking stop is disposed on the self-locking linkage. The self-locking stop is switched between a locked state and an unlocked state by the movement of the control key relative to the fixed housing; in the locked state, the self-locking stop blocks the first and / or second back movable support frames from moving relative to the fixed housing; in the unlocked state, the self-locking stop avoids the first and second back movable support frames, allowing the first and second back movable support frames to move relative to the fixed housing.

[0012] In some embodiments, the self-locking block is matched with the structure of any one of the following: the original functional components of the first and second rear movable support frames, as well as any additional self-locking limiting components.

[0013] In some embodiments, the self-locking assembly further includes a reset member disposed on the self-locking linkage, providing a force for switching the self-locking block to the locked state.

[0014] In some embodiments, the winding device further includes: a winding assembly comprising a winding guide rail and a plurality of support bars, the winding guide rail having a U-shaped groove, the two U-arms of the U-shaped groove extending along a first direction of the fixed housing; the first movable housing having the winding guide rail at opposite ends along a second direction of the fixed housing, such that the two U-arms of the U-shaped groove are respectively located on the front of the fixed housing and the back of the first rear movable support frame; the second movable housing having the winding guide rail at opposite ends along a second direction of the fixed housing, such that the two U-arms of the U-shaped groove are respectively located on the front of the fixed housing and the back of the second rear movable support frame; the plurality of support bars are arranged side by side on the back of the winding portion of the flexible display screen, and the two ends of the support bars are movably disposed in the two oppositely arranged winding guide rails.

[0015] In some embodiments, the support bar has protrusions at both ends, and the protrusions are located in the U-shaped groove.

[0016] In some embodiments, the first movable housing further includes a first front movable support frame located on the front of the fixed housing. The curling guide rail is simultaneously fixed to both the first front movable support frame and the first rear movable support frame, with the two U-arms of the U-shaped groove located on the front of the first front movable support frame and the back of the first rear movable support frame, respectively. The second movable housing further includes a second front movable support frame located on the front of the fixed housing. The curling guide rail is simultaneously fixed to both the second front movable support frame and the second rear movable support frame, with the two U-arms of the U-shaped groove located on the front of the second front movable support frame and the back of the second rear movable support frame, respectively.

[0017] In some embodiments, the first front movable support frame is provided with a first front movable support plate, which is attached to the support strip; the second front movable support frame is provided with a second front movable support plate, which is attached to the support strip.

[0018] In some embodiments, the winding device further includes: a drive assembly comprising a plurality of drive members; the plurality of drive members are disposed between the first movable housing and the fixed housing; and the plurality of drive members are disposed between the second movable housing and the fixed housing; the drive members provide a driving force for the first movable housing and the second movable housing to move relative to the fixed housing.

[0019] In some embodiments, the winding device further includes a rear shell assembly, comprising a fixed rear shell, a first movable rear shell, and a second movable rear shell; wherein the fixed rear shell is disposed on the back side of the fixed housing, the first movable rear shell is disposed on the back side of the first movable housing, and the second movable rear shell is disposed on the back side of the second movable housing; in the winding state, the first movable rear shell and the second movable rear shell are located between the fixed rear shell and the fixed housing.

[0020] In some embodiments, the back of the first movable rear shell is provided with a first handle, and the back of the second movable rear shell is provided with a second handle.

[0021] In some embodiments, when the winding device is in the winding state, the drive member provides a driving force for the first movable housing and the second movable housing to unfold relative to the fixed housing.

[0022] This application embodiment also provides a display device, which includes the above-described winding device and flexible display screen. The flexible display screen includes a fixing part and two winding parts. The fixing part is disposed on a fixing housing, and the two winding parts are located at both ends of the fixing part. The two winding parts are respectively movably disposed on the first movable housing and the second movable housing.

[0023] The embodiments of this application have at least the following beneficial effects:

[0024] The aforementioned winding device achieves the winding and unfolding of the flexible display screen by moving the first and second movable housings relative to the fixed housing. Furthermore, the first and second movable housings are simultaneously driven by synchronous gears to achieve linkage between them. Thus, during the winding and unfolding process, the first and second movable housings can move synchronously with the same displacement and speed relative to the fixed housing. Both sides of the winding device can complete the winding and unfolding operations simultaneously, improving the user experience. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the display device in the winding state in an embodiment of this application is shown;

[0027] Figure 2 It shows Figure 1 A schematic diagram of the display device in its unfolded state;

[0028] Figure 3 It shows Figure 1 Exploded view of the display device;

[0029] Figure 4 A schematic diagram of the structure of the fixed housing back is shown in an embodiment of this application;

[0030] Figure 5 It shows Figure 4 A schematic diagram of the structure with the synchronizing gear and rotary damper removed from the back of the fixed housing;

[0031] Figure 6 It shows Figure 4 Exploded view;

[0032] Figure 7 It shows Figure 6 Structural diagrams of the first and second movable housings in the design;

[0033] Figure 8 A schematic diagram of the structure of the back of the fixed housing according to another embodiment is shown;

[0034] Figure 9 It shows Figure 4 A partial exploded view of the fixed housing, the first movable housing, and the guide rail assembly.

[0035] Figure 10 This illustration shows a state diagram of the display device in the winding state when the self-locking component is locked, according to an embodiment of this application.

[0036] Figure 11 This illustration shows a state diagram of the display device when the self-locking component unlocks during the winding / unwinding process, as shown in an embodiment of this application.

[0037] Figure 12 This illustration shows a state diagram of the display device in the unfolded state when the self-locking component is locked, according to an embodiment of this application.

[0038] Figure 13An exploded view of the winding assembly in an embodiment of this application is shown;

[0039] Figure 14 An exploded view of the winding assembly and flexible display screen in an embodiment of this application is shown;

[0040] Figure 15 A schematic diagram showing the relative positions of the winding assembly and the flexible display screen in an embodiment of this application is shown;

[0041] Figure 16 This illustration shows a schematic diagram of how the flexible display screen is mounted on the winding device in an embodiment of this application.

[0042] Figure 17 This illustration shows a schematic diagram of the drive assembly of the display device in the winding state on the back of the fixed housing in an embodiment of this application.

[0043] Figure 18 This illustration shows a schematic diagram of the state of the drive assembly on the back of the fixed housing during the winding / unwinding process of the display device in an embodiment of this application;

[0044] Figure 19 It shows Figure 16 A schematic diagram of the drive component in the diagram;

[0045] Figure 20 This application shows a state diagram of the rear shell assembly of the display device in the winding state according to an embodiment of the present application;

[0046] Figure 21 This illustration shows the state of the rear shell assembly of the display device during the winding / unwinding process in an embodiment of this application.

[0047] Figure label:

[0048] 1000. Winding device; 100. Fixed housing; 200. First movable housing; 210. First rear movable support frame; 220. First synchronous guide rod; 230. First synchronous rack; 240. First front movable support frame; 250. First front movable support plate; 300. Second movable housing; 310. Second rear movable support frame; 320. Second synchronous guide rod; 330. Second synchronous rack; 340. Second front movable support frame; 350. Second front movable support plate; 400. Synchronous gear; 410. Rotary damper; 500. Guide rail assembly; 510. Linear guide rail; 520. Slider; 600. Self-locking assembly; 610. Control key; 620. Self-locking linkage; 630. Self-locking mechanism. 640. Stop block; 700. Reset component; 710. Winding assembly; 711. Winding guide rail; 712. U-shaped groove; 723. Support bar; 724. Protrusion; 735. Limiting plate; 736. Limiting protrusion; 800. Drive assembly; 810. Elastic connecting rod; 811. First connecting arm; 812. Second connecting arm; 813. Connecting spring; 820. Connecting post; 900. Rear shell assembly; 910. Fixed rear shell; 920. First movable rear shell; 921. First handle; 930. Second movable rear shell; 931. Second handle; 2000. Flexible display screen; 2100. Fixing part; 2200. Winding part; 3000. Battery; 4000. Main board; 5000. Speaker; 6000. Antenna. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0050] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0051] This application is described below with reference to the accompanying drawings and specific embodiments:

[0052] This application provides a winding device 1000, such as... Figures 4 to 6 As shown, the winding device 1000 includes a fixed housing 100, a first movable housing 200, a second movable housing 300, and a synchronous gear 400.

[0053] The first movable housing 200 is movably disposed on the fixed housing 100 along a first direction. The first movable housing 200 includes a first rear movable support frame 210 and a first synchronous guide rod 220. The first rear movable support frame 210 is located on the back of the fixed housing 100, and the first synchronous guide rod 220 is disposed on the first rear movable support frame 210 and located on the back of the fixed housing 100. The first synchronous guide rod 220 is provided with a first synchronous rack 230. Correspondingly, the second movable housing 300 is movably disposed on the fixed housing 100 along a first direction. The second movable housing 300 includes a second rear movable support frame 310 and a second synchronous guide rod 320. The second rear movable support frame 310 is located on the back of the fixed housing 100. The second synchronous guide rod 320 is disposed on the second rear movable support frame 310 and is located on the back of the fixed housing 100. The second synchronous guide rod 320 is provided with a second synchronous rack 330. The synchronous gear 400 is disposed on the back of the fixed housing 100 and is located between the first synchronous guide rod 220 and the second synchronous guide rod 320. The synchronous gear 400 meshes with the first synchronous rack 230 and the second synchronous rack 330, respectively.

[0054] The aforementioned winding device 1000 achieves the winding and unfolding of the flexible display screen 2000 by moving the first movable housing 200 and the second movable housing 300 relative to the fixed housing 100. Furthermore, the first movable housing 200 and the second movable housing 300 are simultaneously driven by the synchronous gear 400 to achieve linkage between the first movable housing 200 and the second movable housing 300. Thus, during the winding and unfolding process, the first movable housing 200 and the second movable housing 300 can move synchronously relative to the fixed housing 100. That is, the first movable housing 200 and the second movable housing 300 move synchronously towards and away from each other on the fixed housing 100, and the displacement and speed of the first movable housing 200 and the second movable housing 300 are the same. The winding and unfolding operations are completed synchronously on both sides of the winding device 1000, improving the user experience.

[0055] In this embodiment, as Figure 1 and Figure 2As shown, the flexible display screen 2000 can be wound and unfolded by the winding device 1000. Optionally, the flexible display screen 2000 includes a fixing part 2100 and a curling part 2200. The curling part 2200 is located at both ends of the fixing part 2100. The fixing part 2100 of the flexible display screen 2000 is disposed on the front side of the fixed housing 100. The curling part 2200 of the flexible display screen 2000 is respectively disposed on the first movable housing 200 and the second movable housing 300. The winding and unfolding of the flexible display screen 2000 is realized by the relative movement and back-to-back movement of the first movable housing 200 and the second movable housing 300 on the fixed housing 100.

[0056] In this embodiment, as Figure 4 As shown, the first direction of the fixed housing 100 is the left-right direction, and the second direction is the up-down direction. Both the first movable housing 200 and the second movable housing 300 can move along the first direction on the fixed housing 100; that is, both the first rear movable support frame 210 and the second rear movable support frame 310 can move along the first direction on the back of the fixed housing 100. Simultaneously, the first synchronous guide rod 220 and the second synchronous guide rod 320 are alternately distributed on the back of the fixed housing 100. Since the first synchronous guide rod 220 is located on the first rear support frame 210, it can move along the first direction on the back of the fixed housing 100. Similarly, the second synchronous guide rod 320 is located on the second rear support frame 310, and can also move along the first direction on the back of the fixed housing 100. The first synchronous guide rod 220 is provided with a first synchronous rack 230, and the second synchronous guide rod 320 is provided with a second synchronous rack 330. The first synchronous rack 230 and the second synchronous rack 330 are respectively located on both sides of the synchronous gear 400, and the first synchronous rack 230 and the second synchronous rack 330 are respectively meshed with the synchronous gear 400. Therefore, the movement of the first synchronous guide rod 220 and the second synchronous guide rod 320 relative to the fixed housing 100 is restricted by the synchronous gear 400. The first synchronous guide rod 220 and the second synchronous guide rod 320 can only move towards each other and away from each other in the first direction of the fixed housing 100, and the moving distance and moving speed are the same. Meanwhile, since the first synchronous guide rod 220 is fixedly connected to the first back movable support frame 210 and the second synchronous guide rod 320 is fixedly connected to the second back movable support frame 310, the first back movable support frame 210 and the second back movable support frame 310 can only move towards each other and away from each other, and the moving distance and moving speed are the same, so that the winding and unfolding on both sides of the winding device 1000 are synchronized, and the curled parts 2200 at both ends of the flexible display screen 2000 can be wound and unfolded synchronously.

[0057] As an optional implementation, the number of first synchronization guide rods 220 is one or more, and the number of second synchronization guide rods 320 is one or more.

[0058] In this embodiment, as Figure 4 As shown, there is one first synchronous guide rod 220 and one second synchronous guide rod 320. Correspondingly, there is one first synchronous rack 230 and one second synchronous rack 330. At the same time, there is one synchronous gear 400. The synchronous gear 400 meshes with the first synchronous rack 230 and the second synchronous rack 330 on both sides to form a set of synchronous structures.

[0059] In another embodiment, such as Figure 8 As shown, there are three first synchronous guide rods 220 and three second synchronous guide rods 320. Correspondingly, there are three first synchronous racks 230, each mounted on one of the three first synchronous guide rods 220; and three second synchronous racks 330, each mounted on one of the three second synchronous guide rods 320. Correspondingly, there are three synchronous gears 400, each positioned between a corresponding first synchronous rack 230 and a second synchronous rack 330. Each synchronous gear 400 meshes with one of the first synchronous racks 230 and a second synchronous rack 330 on either side, forming three sets of synchronous structures.

[0060] In other embodiments, the number of first synchronization guide rods 220 and second synchronization guide rods 320 may also be different; for example, there may be one first synchronization guide rod 220 and two second synchronization guide rods 320. Correspondingly, first synchronization racks 230 are provided on both sides of the first synchronization guide rod 220, and two second synchronization guide rods 320 are located on both sides of the first synchronization guide rod 220, with the second synchronization guide rod 320 having a second synchronization rack 330 on at least one side adjacent to the first synchronization guide rod. Correspondingly, there are two synchronization gears 400. The first synchronization racks 230 on both sides of the first synchronization guide rod 220 mesh with the two synchronization gears 400, and the two second synchronization guide rods 320 mesh with the two synchronization gears 400, forming two sets of synchronization structures through one first synchronization guide rod 220, two second synchronization guide rods 320, and two synchronization gears 400.

[0061] In this application, the number of the first synchronous guide rod 220 and the second synchronous guide rod 320 can be adaptively adjusted according to the size of the back of the fixed housing 100 in the second direction, so that the first movable housing 200 and the second movable housing 300 can achieve stable synchronous movement through this structure.

[0062] As an optional implementation, the length of the first synchronous guide rod 220 is less than or equal to the winding length of the winding device 1000 in the winding state; the length of the second synchronous guide rod 320 is less than or equal to the winding length of the winding device 1000 in the winding state; and the sum of the lengths of the first synchronous guide rod 220 and the second synchronous guide rod 320 is greater than the unfolding length of the winding device 1000 in the unfolding state.

[0063] In this embodiment, as Figure 17 As shown, to avoid the lengths of the first synchronous guide rod 220 and the second synchronous guide rod 320 affecting the winding state of the winding device 1000, the lengths of the first synchronous guide rod 220 and the second synchronous guide rod 320 are respectively less than or equal to the winding length of the winding device 1000 in the winding state (left-right direction in the figure). This avoids the first synchronous guide rod 220 and the second synchronous guide rod 320 interfering with the first movable housing 200 and the second movable housing 300, and avoids affecting the movement of the first movable housing 200 and the second movable housing 300 to the winding position. Figure 18 As shown, the sum of the lengths of the first synchronous guide rod 220 and the second synchronous guide rod 320 is greater than the unfolded length of the winding device 1000 in the unfolded state (left-right direction in the figure). This ensures that even in the unfolded state of the winding device 1000, the first synchronous guide rod 220 and the second synchronous guide rod 320 still have overlapping portions, ensuring that they remain engaged with the synchronous gear 400 via the first synchronous rack 230 and the second synchronous rack 330 respectively. This ensures that the first movable housing 200 and the second movable housing 300 can maintain synchronous movement throughout the unfolding and winding process. In this embodiment, the lengths of the first synchronous guide rod 220 and the second synchronous guide rod 320 cannot be too long, affecting the winding position of the winding device 1000, nor too short, causing the first synchronous rack 230 and the second synchronous rack 330 to disengage from the synchronous gear 400.

[0064] In this embodiment, the lengths of the fixed housing 100, the first rear movable support frame 210, and the second rear movable support frame 310 in the first direction of the fixed housing 100 not only limit the lengths of the first synchronous guide rod 220 and the second synchronous guide rod 320, but also limit the movement distance of the first movable housing 200 and the second movable housing 300 relative to the fixed housing 100. Figure 17 and Figure 18 As shown, the moving distance of the first movable housing 200 on the fixed housing 100 is less than the length of the first rear movable support frame 210 in the first direction, and the moving distance of the second movable housing 300 on the fixed housing 100 is less than the length of the second rear movable support frame 310 in the first direction.

[0065] The length of the fixed housing 100 in the first direction is greater than the total length of the first rear movable support frame 210 and the second rear movable support frame 310 in the first direction. This allows the movement of the first rear movable support frame 210 and the second rear movable support frame 310 on the fixed housing 100 to be unrestricted by the length of the fixed housing 100 in the first direction. After the first rear movable support frame 210 and the second rear movable support frame 310 move towards each other, they can overlap with the fixed housing 100. This allows the roll-up portion 2200 of the flexible display screen 2000 to be completely rolled up to the back of the fixed housing 100 under the action of the first movable housing 200 and the second movable housing 300.

[0066] As an optional implementation, the length of the first synchronizing rack 230 is greater than or equal to the distance the first movable housing 200 moves relative to the fixed housing 100; the length of the second synchronizing rack 330 is greater than or equal to the distance the second movable housing 300 moves relative to the fixed housing 100.

[0067] In this embodiment, as Figure 4 As shown, the length of the first synchronizing rack 230 is greater than or equal to the distance the first movable housing 200 moves relative to the fixed housing 100, and the length of the second synchronizing rack 330 is greater than or equal to the distance the second movable housing 300 moves relative to the fixed housing 100. This ensures that in both the winding and unfolding states, the first synchronizing guide rod 220 and the second synchronizing guide rod 320 can mesh with the synchronizing gear 400 through the first synchronizing rack 230 and the second synchronizing rack 330, respectively. This ensures that the first movable housing 200 and the second movable housing 300 can maintain synchronous movement towards each other and backward movement.

[0068] In this application, the position and length of the first synchronizing rack 230 on the first synchronizing guide rod 220 can be determined based on the moving distance of the first movable housing 200 relative to the fixed housing 100. Similarly, the position and length of the second synchronizing rack 330 on the second synchronizing guide rod 320 can be determined based on the moving distance of the second movable housing 300 relative to the fixed housing 100. Figure 4 and Figure 5 As shown, in this embodiment, the length of the first synchronizing rack 230 can be 1 / 3 to 1 / 2 of the length of the first synchronizing guide rod 220, and the length of the second synchronizing rack 330 can be 1 / 3 to 1 / 2 of the length of the second synchronizing guide rod 320.

[0069] In other embodiments, the length of the first synchronizing rack 230 can be the same as the length of the first synchronizing guide rod 220, and the length of the second synchronizing rack 330 can be the same as the length of the second synchronizing guide rod 320. The first synchronizing guide rod 220 and the second synchronizing guide rod 320 can limit the movement distance of the first movable housing 200 and the second movable housing 300 relative to the fixed housing 100. For example, in the winding state, the first synchronizing guide rod 220 can abut against the second back movable support frame 310, and the second synchronizing guide rod 320 can abut against the first back movable support frame 210, thereby defining the winding position by the first synchronizing guide rod 220 and the second synchronizing guide rod 320.

[0070] Furthermore, the movement distance and position of the first movable housing 200 and the second movable housing 300 relative to the fixed housing 100 can be limited by other means without having to limit the maximum length of the first synchronous rack 230 and the second synchronous rack 330. For example, limiting structures can be provided on the first synchronous guide rod 220 and the second synchronous guide rod 320, or limiting structures can be provided on the first rear movable support frame 210 or the second rear movable support frame 310, or limiting structures can be provided on the back of the fixed housing 100, etc. Those skilled in the art can select appropriate limiting methods according to design needs to limit the movement distance and position of the first movable housing 200 and the second movable housing 300 relative to the fixed housing 100.

[0071] As an optional implementation, the winding device 1000 further includes a rotation damper 410 disposed on the back side of the fixed housing 100, and the synchronizing gear 400 is disposed on the back side of the fixed housing 100 via the rotation damper 410.

[0072] In this embodiment, as Figure 4 and Figure 6 As shown, the rotary damper 410 is disposed on the back of the fixed housing 100. A central hole is provided in the center of the synchronous gear 400. The central hole is fitted onto the connecting shaft of the rotary damper 410, so that the synchronous gear 400 can rotate relative to the fixed housing 100 through the rotary damper 410. At the same time, the rotation of the synchronous gear 400 is damped by the rotary damper 410.

[0073] Optionally, the winding and unwinding of the winding device 1000 in this embodiment can be performed manually, i.e., by manually pushing and pulling the first movable housing 200 and the second movable housing 300, causing the first movable housing 200 and the second movable housing 300 to move relative to the fixed housing 100, thereby realizing the winding and unwinding of the winding device 1000. Since there are significant differences in strength between different people, the speed at which different people manually wind and unwind the winding device 1000 will vary. To avoid damage to the winding device 1000 due to excessive manual pushing and pulling force or speed, the rotational speed of the synchronous gear 400 can be controlled by the rotary damper 410, thereby controlling the manual pushing and pulling force and adjusting the winding and unwinding speed of the winding device 1000. The rotary damper 410 can rotate at any angle of 360°, and the resistance is proportional to the speed. The greater the speed, the greater the resistance, and the greater the resistance, the faster the speed decreases. Therefore, the rotary damper 410 can make the unfolding and winding speed of the winding device 1000 tend to a set range when different people push and pull the winding device 1000, so that the winding and unfolding speed of the winding device 1000 is more stable.

[0074] As an optional implementation, the winding device 1000 further includes a guide rail assembly 500, which includes a linear guide rail 510 and a slider 520; wherein, the linear guide rail 510 is disposed on the back side of the fixed housing 100 along a first direction of the fixed housing 100, and the slider 520 is respectively disposed on the first back movable support frame 210 and the second back movable support frame 310, and the slider 520 is slidably connected to the linear guide rail 510; or, the linear guide rail 510 is disposed on the first back movable support frame 210 and the second back movable support frame 310 along the first direction of the fixed housing 100, and the slider 520 is disposed on the back side of the fixed housing 100, and the slider 520 is slidably connected to the linear guide rail 510.

[0075] In this embodiment, as Figure 5 and Figure 9As shown, four linear guide rails 510 are arranged on the fixed housing 100 along the first direction of the fixed housing 100, and the arrangement of the linear guide rails 510 matches the structure of the first rear movable support frame 210 and the second rear movable support frame 310. Slider 520 is respectively arranged on the first rear movable support frame 210 and the second rear movable support frame 310. The slider 520 on the first rear movable support frame 210 and the second rear movable support frame 310 cooperates with the linear guide rails 510, so that the first rear movable support frame 210 and the second rear movable support frame 310 slide in the linear guide rails 510 through the slider 520, thereby limiting the movement trajectory and movement direction of the first rear movable support frame 210 and the second rear movable support frame 310 on the fixed housing 100, so that the first rear movable support frame 210 and the second rear movable support frame 310 move relative to the fixed housing 100 in the first direction, and the guide rail assembly 500 prevents the movement of the first movable housing 200 and the second movable housing 300 relative to the fixed housing 100 from deflection.

[0076] In other embodiments, the linear guide rail 510 may also be provided on the first rear movable support frame 210 and the second rear movable support frame 310. Correspondingly, the slider 520 is provided on the back of the fixed housing 100. The first rear movable support frame 210 and the second rear movable support frame 310 are moved relative to the fixed housing 100 in a first direction by the cooperation of the linear guide rail 510 and the slider 520.

[0077] In this embodiment, as Figure 9 As shown, the slider 520 is nested on the linear guide rail 510, thereby fixing the relative distance between the first back movable support frame 210 and the second back movable support frame 310 and the fixed housing 100 in the thickness direction of the winding device 1000.

[0078] In other embodiments, a groove may be provided in the linear guide 510, and the slider 520 may be embedded in the groove to achieve this purpose.

[0079] As an optional implementation, the winding device 1000 further includes a self-locking assembly 600, which includes a control key 610, a self-locking linkage 620, and a self-locking stop 630. The control key 610 is movably disposed on the outer side wall of the fixed housing 100. The self-locking linkage 620 is linked to the control key 610, disposed on the inner side wall of the fixed housing 100 and located on the back of the fixed housing 100. The self-locking stop 630 is disposed on the self-locking linkage 620. The self-locking block 630 is switched between locked and unlocked states by the control key 610 relative to the fixed housing 100. In the locked state, the self-locking block 630 blocks the first rear movable support frame 210 and / or the second rear movable support frame 310 from moving relative to the fixed housing 100. In the unlocked state, the self-locking block 630 avoids the first rear movable support frame 210 and the second rear movable support frame 310, allowing the first rear movable support frame 210 and the second rear movable support frame 310 to move relative to the fixed housing 100.

[0080] In this embodiment, as Figure 6 , Figures 10 to 12 As shown, a self-locking component 600 is provided in the winding device 1000, which makes the winding device 1000 more stable in the winding and unwinding states. After the winding device 1000 is manually wound or unwinded, in order to keep the winding device 1000 in the winding or unwinding state, the movement of the first movable housing 200 and the second movable housing 300 can be restricted by the self-locking component 600, so that the winding device 1000 remains in the winding or unwinding state. In this embodiment, the self-locking link 620 extends in the first direction of the fixed housing 100 and corresponds to the first rear movable housing and the second rear movable housing. A plurality of self-locking blocks 630 are provided on the self-locking link 620. The positions of the self-locking blocks 630 correspond to the positions of the first rear movable support frame 210 and the second rear movable support frame 310 in the winding state and the unfolding state, respectively. The self-locking blocks 630 block the movement of the first rear movable support frame 210 and the second rear movable support frame 310. Furthermore, by pressing the control component, the self-locking link 620 can be moved synchronously to switch the self-locking blocks 630 between the locked state and the unlocked state.

[0081] As an optional implementation, the self-locking block 630 is matched with the structure of any one of the following: the original functional components of the first rear movable support frame 210 and the second rear movable support frame 310, as well as any additional self-locking limiting member.

[0082] In this embodiment, as Figures 10 to 12As shown, the self-locking block 630 of the self-locking assembly 600 constrains the sliding of the slider 520 in the guide rail assembly 500 relative to the linear guide rail 510 to lock the moving positions of the first rear movable support frame 210 and the second rear movable support frame 310. That is, the self-locking block 630 matches the original functional components of the first rear movable support frame 210 and the second rear movable support frame 310 to achieve the self-locking function; the self-locking method is simple and convenient. Figure 10 As shown, when the winding device 1000 is in the winding state, the self-locking block 630 blocks the slider 520 from sliding to both sides (opposite to each other) of the fixed housing 100 via the linear guide rail 510, thereby locking the first back movable support frame 210 and the second back movable support frame 310 in the winding position, and the self-locking assembly 600 is in the locked state. Figure 11 As shown, when control key 610 is pressed, the self-locking assembly 600 switches to the unlocked state. The self-locking linkage 620 and the self-locking stop 630 move synchronously, causing the self-locking stop 630 to avoid the slider 520, releasing the lock on the slider 520. This allows the slider 520 to slide along the linear guide rail 510 towards both sides (opposite to each other) of the fixed housing 100, causing the first rear movable support frame 210 and the second rear movable support frame 310 to move into the unfolded state. When the winding device 1000 reaches the unfolded state, as... Figure 12 As shown, the self-locking component 600 can be manually or automatically reset. The self-locking block 630 blocks the slider 520 from sliding towards the middle (opposite) of the fixed housing 100 via the linear guide rail 510, so that the first rear movable support frame 210 and the second rear movable support frame 310 are locked in the unfolded position, and the self-locking component 600 is in the locked state.

[0083] In other embodiments, the self-locking block 630 can also achieve the self-locking function by cooperating with the self-locking limiting member separately provided on the first rear movable support frame 210 and / or the second rear movable support frame 310. It can also achieve the self-locking function by cooperating with the respective structures of the first rear movable support frame 210 and the second rear movable support frame 310. Its structural principle is the same as the cooperation principle between the self-locking block 630 and the slider 520. Those skilled in the art can make adaptive adjustments according to space and position requirements, which will not be elaborated here.

[0084] As an optional implementation, the self-locking assembly 600 also includes a reset member 640, which is disposed on the self-locking linkage 620 and provides a force for the self-locking stop 630 to switch to the locked state.

[0085] In this embodiment, as Figures 10 to 12As shown, the reset member 640 can make the elastic member connected between the side wall of the fixed housing 100 and the self-locking link 620. In the unlocked state, the elastic member is in the extended state, providing a force for the self-locking link 620 to move towards the side wall of the fixed housing 100. This allows the self-locking link 620 to maintain the tendency to move towards the side wall of the fixed housing 100 under the action of the reset member 640. When the self-locking link 620 is not subject to external force and the restriction of the slider 520, it can be reset to the locked state.

[0086] In other embodiments, the self-locking component 600 can also be controlled by the translation control key 610 to switch between a locked state and an unlocked state, so that the self-locking block 630 switches between blocking the movement of the first rear movable support frame 210 and the second rear movable support frame 310 relative to the fixed housing 100 and avoiding the movement of the first rear movable support frame 210 and the second rear movable support frame 310 relative to the fixed housing 100. The specific structure of the self-locking component 600 can be adapted based on the above description, and will not be repeated here.

[0087] As an optional implementation, the winding device 1000 further includes a winding assembly 700, which includes a winding guide rail 710 and a plurality of support bars 720. The winding guide rail 710 is provided with a U-shaped groove 711, and the two U-arms of the U-shaped groove 711 extend along a first direction of the fixed housing 100. The first movable housing 200 is provided with winding guide rails 710 at opposite ends along a second direction of the fixed housing 100, such that the two U-arms of the U-shaped groove 711 are respectively located on the front side of the fixed housing 100. The back of the first rear movable support frame 210; the second movable housing 300 is provided with curling guide rails 710 at opposite ends along the second direction of the fixed housing 100, and the two U arms of the U-shaped groove 711 are respectively located on the front of the fixed housing 100 and the back of the second rear movable support frame 310; a plurality of support bars 720 are arranged side by side on the back of the curled part 2200 of the flexible display screen 2000, and the two ends of the support bars 720 are movably arranged in the two oppositely arranged curling guide rails 710.

[0088] In this embodiment, as Figures 13 to 16 As shown, several parallel support bars 720 are attached to the back of the curled portion 2200 of the flexible display screen 2000. The two ends of the support bars 720 are movably disposed in the U-shaped grooves 711 of the curling guide rail 710. During the winding and unwinding process of the winding device 1000, the two ends of the support bars 720 move within the U-shaped grooves 711 of the curling guide rail 710, thereby driving the curled portion 2200 of the flexible display screen 2000 to curl and unwind. Simultaneously, as... Figure 6As shown, the first movable housing 200 has coiling guide rails 710 at opposite ends along the second direction of the fixed housing 100, and the two U-arms of the U-shaped groove 711 are respectively located on the front of the fixed housing 100 and the back of the first rear movable support frame 210; the second movable housing 300 has coiling guide rails 710 at opposite ends along the second direction of the fixed housing 100, and the two U-arms of the U-shaped groove 711 are respectively located on the front of the fixed housing 100 and the back of the second rear movable support frame 310.

[0089] In this embodiment, the curling guide rails 710 on the first movable housing 200 and the second movable housing 300 can constrain the movement of the support bar 720. The two ends of the support bar 720 move within the U-shaped grooves 711 of the curling guide rails 710, allowing the support bar 720 to move to the front of the first movable housing 200 and the second movable housing 300, and to the back of the first rear movable support frame 210 and the second rear movable support frame 310. This causes the curling portion 2200 of the flexible display screen 2000 to curl and unfold on the front of the first movable housing 200 and the second movable housing 300, and to be rolled up on the back of the first rear movable support frame 210 and the second rear movable support frame 310. During the process of the first movable housing 200 and the second movable housing 300 moving towards each other on the fixed housing 100, the curling guide rail 710 moves synchronously with the first movable housing 200 and the second movable housing 300, so that the support bar 720 moves in the U-shaped groove 711 in the curling guide rail 710, thereby allowing the curled part 2200 of the flexible display screen 2000 to move synchronously with the support bar 720, and the curled part 2200 of the flexible display screen 2000 can be curled to the back of the first movable housing 200 and the second movable housing 300; As the first movable housing 200 and the second movable housing 300 move in opposite directions on the fixed housing 100, the curling guide rail 710 moves synchronously with the first movable housing 200 and the second movable housing 300. This causes the support bar 720 to move within the U-shaped groove 711 in the curling guide rail 710, thereby allowing the curled portion 2200 of the flexible display screen 2000 to move synchronously with the support bar 720. The curled portion 2200 of the flexible display screen 2000 can then unfold to the front of the first movable housing 200 and the second movable housing 300. The curling assembly enables the flexible display screen 2000 to be curled and unfolded on the first movable housing 200 and the second movable housing 300.

[0090] As an optional implementation, the support bar 720 has protrusions 721 at both ends, and the protrusions 721 are located in the U-shaped groove 711.

[0091] In this embodiment, as Figure 14 and Figure 16As shown, the support bar 720 can be attached to the back of the curled part 2200 of the flexible display screen 2000. The protrusions 721 at both ends of the support bar 720 cooperate with the U-shaped grooves 711 of the coiling guide rail. The movement of the support bar 720 is constrained by the coiling guide rail 710, thereby constraining the curled part 2200 of the flexible display screen 2000. This eliminates the need for a tensioning structure for the flexible display screen 2000 and saves space in the whole machine.

[0092] In this embodiment, optionally, such as Figure 13 As shown, the curling assembly also includes a limiting plate 730, which is located at both ends of the parallel support bars 720 in the first direction, and the limiting plate 730 is pivotally connected to the support bars 720. The edge of the curled portion 2200 can be attached to the limiting plate. Meanwhile, the limiting plate 730 has limiting protrusions 731 at both ends in the second direction. The structure of the limiting protrusions 731 is the same as that of the protrusions 721 on the support bar 720. The limiting protrusions 731 are set in one U-arm of the U-shaped groove 711, and the limiting plate 730 is located on the back of the first back movable support frame 210 and the second back movable support frame 310 respectively. Since the width of the limiting plate 730 is larger than the width of the support bar 720, the limiting plate 730 cannot pass smoothly through the U-shaped curling part of the curling guide rail 710. Thus, the limiting plate 730 can restrict the position of the edge of the curling part 2200 of the flexible display screen 2000, so that the edge of the curling part 2200 is located on the back of the first back movable support frame 210 and the second back movable support frame 310, preventing it from being exposed from the surface of the curling device.

[0093] As an optional implementation, the first movable housing 200 further includes a first front movable support frame 240 located on the front of the fixed housing 100, and a coiling guide rail 710 is disposed on the first front movable support frame 240 and the first rear movable support frame 210, such that the two U-arms of the U-shaped groove 711 are respectively located on the front of the first front movable support frame 240 and the back of the first rear movable support frame 210; the second movable housing 300 further includes a second front movable support frame 340 located on the front of the fixed housing 100, and a coiling guide rail 710 is disposed on the second front movable support frame 340 and the second rear movable support frame 310, such that the two U-arms of the U-shaped groove 711 are respectively located on the front of the second front movable support frame 340 and the back of the second rear movable support frame 310.

[0094] In this embodiment, a first front movable support frame 240 connected to a first rear movable support frame 210 is provided in the first movable housing 200. The first front movable support frame 240 supports the curling guide rail 710, and the first rear movable support frame 210 and the first front movable support frame 240 jointly support the curling guide rail 710. Similarly, a second front movable support frame 340 connected to a second rear movable support frame is provided in the second movable housing 300. The second front movable support frame 340 supports the curling guide rail 710, and the second rear movable support frame 310 and the second front movable support frame 340 jointly support the curling guide rail 710. This makes the position of the curling guide rail 710 on the first movable housing 200 and the second movable housing 300 more stable.

[0095] As an optional implementation, the first front movable support frame 240 is provided with a first front movable support plate 250 that fits against the support bar 720, and the second front movable support frame 340 is provided with a second front movable support plate 350 that fits against the support bar 720.

[0096] After the winding device 1000 unfolds, the back of the curved section 2200 of the flexible display screen 2000 lacks the support of the fixed housing 100, resulting in insufficient support and a tendency to dent. For example... Figure 6 As shown, in this embodiment, a first front movable support plate 250 is provided in the first movable housing 200 and a second front movable support plate 350 is provided in the second movable housing 300. When the winding device 1000 is in the winding state, the first front movable support plate 250 and the second front movable support plate 350 are hidden between the front of the fixed housing 100 and the flexible display screen 2000. When the winding device 1000 is in the unfolded state, the first front movable support plate 250 and the second front movable support plate 350 are pulled out from the fixed housing 100, and the first front movable support plate 250 and the second front movable support plate 350 can fit against the support strip 720 on the back of the curled part 2200 of the flexible display screen 2000 to achieve planar support for the curled part 2200 of the flexible display screen 2000, improve the support effect of the flexible display screen 2000, and prevent the flexible display screen 2000 from denting during use.

[0097] As an optional implementation, the winding device 1000 further includes a drive assembly 800, which includes a plurality of drive members; a plurality of drive members are provided between the first movable housing 200 and the fixed housing 100; a plurality of drive members are provided between the second movable housing 300 and the fixed housing 100; the drive members provide driving force for the first movable housing 200 and the second movable housing 300 to move relative to the fixed housing 100.

[0098] In this application, the drive assembly 800 can provide driving force for the first movable housing 200 and the second movable housing 300 to move toward each other relative to the fixed housing 100 through the drive member, or provide driving force for the first movable housing 200 and the second movable housing 300 to move away from each other relative to the fixed housing 100 through the drive member. Those skilled in the art can make adaptive adjustments according to design needs.

[0099] In this embodiment, as Figures 17 to 19 As shown, the driving component can be an elastic link 810, which includes a first link arm 811 and a second link arm 812 pivotally connected to the first link arm 811. A link spring 813 is sandwiched between the first link arm 811 and the second link arm 812. When the first link arm 811 and the second link arm 812 are closed, the link spring 813 is in a compressed state. The driving assembly 800 includes at least two elastic links 810, and at least one elastic link 810 is provided between the first movable housing 200 and the fixed housing 100, such as... Figures 17 to 19 As shown, the first link arm 811 of the elastic link 810 is connected to the connecting post 820 on the edge of the fixed housing 100, and the second link arm 812 of the elastic link 810 is connected to the connecting post 820 on the edge of the first movable housing 200. Similarly, at least one elastic link 810 is provided between the second movable housing 300 and the fixed housing 100, with the first link arm 811 of the elastic link 810 connected to the connecting post 820 on the edge of the fixed housing 100, and the second link arm 812 of the elastic link 810 connected to the connecting post 820 on the edge of the second movable housing 300. When the winding device 1000 is in the winding state, the first link arm 811 and the second link arm 812 are closed, and the link spring 813 is in a compressed state, which can provide driving force for the unfolding of the winding device 1000.

[0100] In other embodiments, the driving element may be other devices that can provide driving force for the first movable housing 200 and the second movable housing 300 to move relative to the fixed housing 100. Those skilled in the art can make adaptive selections and adjustments according to the specific structure of the winding device 1000, which will not be elaborated here.

[0101] As an optional implementation, the winding device 1000 further includes a rear shell assembly 900, which includes a fixed rear shell 910 disposed on the back of the fixed housing 100, a first movable rear shell 920 disposed on the back of the first movable housing 200, and a second movable rear shell 930 disposed on the back of the second movable housing 300; when the winding device 1000 is in the winding state, the first movable rear shell 920 and the second movable rear shell 930 are located between the fixed rear shell 910 and the fixed housing 100.

[0102] In this embodiment, as Figure 3As shown, the rear shell assembly 900, together with the fixed housing 100, the first movable housing 200, and the second movable housing 300, forms a certain accommodating space inside the winding device 1000 to accommodate corresponding functional devices, such as the battery 3000, motherboard 4000, speaker 5000, antenna 6000, and other functional devices of the display device. In this embodiment, the first movable rear shell 920 is disposed on the back of the first movable housing 200 and moves synchronously with the first movable housing 200, and the second movable rear shell 930 is disposed on the back of the second movable housing 300 and moves synchronously with the second movable housing 300. Therefore, when the winding device 1000 is in the winding state, the first movable rear shell 920 and the second movable rear shell 930 move between the fixed rear shell 910 and the fixed housing 100, making the overall structure of the winding device 1000 smaller; when the winding device 1000 is in the unfolding state, the first movable rear shell 920 and the second movable rear shell 930 move out from between the fixed rear shell 910 and the fixed housing 100.

[0103] As an optional implementation, the back of the first movable rear shell 920 is provided with a first handle 921, and the back of the second movable rear shell 930 is provided with a second handle 931.

[0104] The winding device 1000 can be manually unwound, thus requiring an additional point of force application. In this embodiment, as... Figure 21 As shown, a first handle 921 is provided on the back of the first movable rear shell 920, and a second handle 931 is provided on the back of the second movable rear shell 930. The first handle 921 and the second handle 931 provide force points for the manual unfolding of the winding device 1000.

[0105] As an optional implementation, when the winding device 1000 is in the winding state, and the first movable rear shell 920 and the second movable rear shell 930 are completely hidden between the fixed rear shell 910 and the fixed housing 100, the driving member provides driving force for the first movable housing 200 and the second movable housing 300 to unfold relative to the fixed housing 100.

[0106] like Figure 20 As shown, for a more aesthetically pleasing rewinding device 1000, the first movable rear shell 920 and the second movable rear shell 930 can be moved between the fixed rear shell 910 and the fixed housing 100 and completely hidden. In this case, the first latch 921 on the first movable rear shell 920 and the second latch 931 on the second movable rear shell 930 are hidden between the fixed rear shell 910 and the fixed housing 100. In this embodiment, as... Figure 18 and Figure 21As shown, the driving component can be a spring linkage. The spring linkage can provide driving force for the first movable housing 200 and the second movable housing 300 to unfold relative to the fixed housing 100. After the self-locking component 600 is unlocked, the driving component can drive the first movable housing 200 and the second movable housing 300 to move a certain distance in opposite directions. This causes the first movable rear housing 920 and the second movable rear housing 930 to move out a portion between the fixed rear housing 910 and the fixed housing 100, exposing the first handle 921 on the first movable rear housing 920 and the second handle 931 on the second movable rear housing 930. This provides a force application point for manually pulling open the winding device 1000, improving the operability of the winding device 1000 when unfolded.

[0107] Based on the same inventive concept, this application also provides a display device, which includes the above-mentioned winding device 1000 and flexible display screen 2000. The flexible display screen 2000 includes a fixing part 2100 and a curling part 2200 located on both sides of the fixing part 2100. The fixing part 2100 is disposed on the fixing housing 100, and the curling part 2200 is movably disposed on the first movable housing 200 and the second movable housing 300, respectively.

[0108] Since the display device provided by the present invention includes the winding device 1000 of the above-mentioned technical solution, the display device provided by the present invention has all the beneficial effects of the winding device 1000, which will not be elaborated here.

[0109] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0110] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0111] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0112] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0113] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A winding device, characterized in that, The winding device includes: Fixed housing; A first movable housing is movably disposed on the fixed housing along a first direction. The first movable housing includes a first rear movable support frame and a first synchronous guide rod. The first rear movable support frame is located on the back of the fixed housing. The first synchronous guide rod is disposed on the first rear movable support frame and is located on the back of the fixed housing. The first synchronous guide rod is provided with a first synchronous rack. The second movable housing is movably disposed on the fixed housing along a first direction. The second movable housing includes a second rear movable support frame and a second synchronous guide rod. The second rear movable support frame is located on the back of the fixed housing. The second synchronous guide rod is disposed on the second rear movable support frame and is located on the back of the fixed housing. The second synchronous guide rod is provided with a second synchronous rack. A synchronizing gear is disposed on the back of the fixed housing. The synchronizing gear is located between the first synchronizing guide rod and the second synchronizing guide rod, and the synchronizing gear meshes with the first synchronizing rack and the second synchronizing rack respectively. A drive assembly includes a plurality of drive components; the plurality of drive components are disposed between the first movable housing and the fixed housing; and the plurality of drive components are disposed between the second movable housing and the fixed housing; the drive components provide driving force for the first movable housing and the second movable housing to move relative to the fixed housing; The driving component is an elastic link, which includes a first link arm and a second link arm pivotally connected to the first link arm. A link spring is sandwiched between the first link arm and the second link arm. When the first link arm and the second link arm are closed, the link spring is in a compressed state. The rear shell assembly includes a fixed rear shell, a first movable rear shell, and a second movable rear shell; wherein the fixed rear shell is disposed on the back of the fixed housing, the first movable rear shell is disposed on the back of the first movable housing, and the second movable rear shell is disposed on the back of the second movable housing; in the winding state, the first movable rear shell and the second movable rear shell are located between the fixed rear shell and the fixed housing; a first handle is provided on the back of the first movable rear shell, and a second handle is provided on the back of the second movable rear shell; In the winding state, the first movable rear shell and the second movable rear shell are completely hidden between the fixed rear shell and the fixed housing, and the driving member provides driving force for the first movable housing and the second movable housing to unfold relative to the fixed housing. The winding device further includes a winding assembly, including a winding guide rail and several support bars. The winding guide rail is provided with a U-shaped groove, and the two U-shaped arms of the U-shaped groove extend along the first direction of the fixed housing. The first movable housing is provided with the curling guide rails at its two opposite ends along the second direction of the fixed housing; The second movable housing is provided with the curling guide rails at opposite ends along the second direction of the fixed housing; Several of the support bars are arranged side by side on the back of the rolled portion of the flexible display screen, and the two ends of the support bars are movably arranged in two oppositely arranged rolling guides; The first movable housing also includes a first front movable support frame, which is located on the front of the fixed housing. The curling guide rail is fixed on both the first front movable support frame and the first rear movable support frame, and the two U-arms of the U-shaped groove are located on the front of the first front movable support frame and the back of the first rear movable support frame, respectively. The second movable housing also includes a second front movable support frame, which is located on the front of the fixed housing. The curling guide rail is fixed on both the second front movable support frame and the second rear movable support frame, and the two U-arms of the U-shaped groove are located on the front of the second front movable support frame and the back of the second rear movable support frame, respectively. The first front movable support frame is provided with a first front movable support plate, and the second front movable support frame is provided with a second front movable support plate. When the winding device is in the winding state, the first front movable support plate and the second front movable support plate are hidden between the front of the fixed housing and the flexible display screen. When the winding device is in the unfolding state, the first front movable support plate and the second front movable support plate are pulled out from the fixed housing, with the first front movable support plate abutting against the support strip and the second front movable support plate abutting against the support strip.

2. The winding device as described in claim 1, characterized in that, The number of the first synchronization guide rod is one or more, and the number of the second synchronization guide rod is one or more.

3. The winding device as described in claim 1, characterized in that, The length of the first synchronous guide rod is less than or equal to the winding length of the winding device in the winding state; the length of the second synchronous guide rod is less than or equal to the winding length of the winding device in the winding state; the sum of the lengths of the first synchronous guide rod and the second synchronous guide rod is greater than the unfolded length of the winding device in the unfolded state.

4. The winding device as described in claim 1, characterized in that, The length of the first synchronizing rack is greater than or equal to the distance the first movable housing moves relative to the fixed housing; the length of the second synchronizing rack is greater than or equal to the distance the second movable housing moves relative to the fixed housing.

5. The winding device as described in claim 1, characterized in that, The winding device further includes: A rotary damper is disposed on the back side of the fixed housing, and the synchronizing gear is disposed on the back side of the fixed housing via the rotary damper.

6. The winding device as described in claim 1, characterized in that, The winding device further includes: Guide rail assembly, including linear guide rail and slider; Wherein, the linear guide rail is disposed on the back side of the fixed housing along a first direction of the fixed housing, and the slider is disposed on the first and second back movable support frames respectively, and the slider is slidably connected to the linear guide rail; or, the linear guide rail is disposed on the first and second back movable support frames along a first direction of the fixed housing, and the slider is disposed on the back side of the fixed housing, and the slider is slidably connected to the linear guide rail.

7. The winding device as described in claim 1, characterized in that, The winding device further includes: The self-locking assembly includes a control key, a self-locking linkage, and a self-locking stop; The control key is movably disposed on the outer side wall of the fixed housing. The self-locking linkage is linked to the control key and is disposed on the inner side wall of the fixed housing and located on the back of the fixed housing. The self-locking stop is disposed on the self-locking linkage. The self-locking stop is switched between locked and unlocked states by the movement of the control key relative to the fixed housing. In the locked state, the self-locking stop prevents the first and / or second rear movable support frames from moving relative to the fixed housing. In the unlocked state, the self-locking stop avoids the first and second rear movable support frames, allowing the first and second rear movable support frames to move relative to the fixed housing.

8. The winding device as described in claim 7, characterized in that, The self-locking block is matched with the structure of any one of the following: the original functional components of the first and second rear movable support frames, as well as any additional self-locking limiting components.

9. The winding device as described in claim 7, characterized in that, The self-locking component also includes: A reset element is provided on the self-locking linkage to provide a force for switching the self-locking block to the locked state.

10. The winding device as claimed in claim 1, characterized in that, The support bar has protrusions at both ends, and the protrusions are located in the U-shaped groove.

11. A display device, characterized in that, The display device includes a winding device and a flexible display screen as described in any one of claims 1 to 10. The flexible display screen includes a fixing part and two winding parts. The fixing part is disposed on a fixing housing. The two winding parts are located at both ends of the fixing part and are respectively movably disposed on the first movable housing and the second movable housing.

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