A terminal

Abstract

The application provides a terminal to improve the unfolding effect of the terminal. The terminal comprises a fixed frame, a moving frame, a flexible screen and a hinge mechanism; the moving frame is in sliding connection with the fixed frame. The hinge mechanism comprises a rotating shaft and a transmission assembly, the transmission assembly comprises a plurality of synchronous gears in rotational connection with the fixed frame, and a first rack and a second rack in engagement with the plurality of synchronous gears, the first rack being in fixed connection with the moving frame; the second rack being in sliding connection with the fixed frame. The rotating shaft is in rotational connection with the fixed frame and is used for guiding the sliding direction of the flexible screen. One end of the flexible screen is in fixed connection with the moving frame, and the other end is in fixed connection with the second rack after passing around the rotating shaft. When the flexible screen slides along with the moving frame, the moving frame drives the first rack to slide relative to the synchronous gears, and the synchronous gears are driven to slide by the second rack.

Description

Technical Field

[0001] This application relates to the field of terminal technology, and in particular to a terminal. Background Technology

[0002] The diversification of screens has provided the smart product industry with more application options, especially the emergence of flexible screens, which has added more possibilities to the currently highly homogenized smartphone industry. Among the various terminal products equipped with flexible screens, they can be broadly divided into foldable and sliding types. Sliding terminals are mainly categorized into belt-type, spring-type, and motor-type. Although sliding terminals have existed for some time, in order to be applied to flexible displays, in addition to the requirements of traditional sliding mechanisms, there are more important screen-related requirements, including maintaining the constant length of the screen's neutral layer and maintaining the flatness of the screen surface. However, current sliding terminals cannot achieve these requirements. Summary of the Invention

[0003] This application provides a terminal for improving the unfolding effect of the terminal.

[0004] Firstly, a sliding terminal is provided, which specifically includes a fixed frame, a movable frame, a flexible screen, and a hinge mechanism; wherein the movable frame is slidably connected to the fixed frame. When the movable frame slides out, the terminal is in an unfolded state; when the movable frame slides into the fixed frame, the terminal is in a closed state. The flexible screen is required to cooperate when the terminal switches between these two states. To ensure the unfolding effect of the flexible screen, the terminal of this application also provides a hinge mechanism, which includes a rotating shaft and a transmission component; wherein the transmission component includes multiple synchronous gears rotatably connected to the fixed frame, and a first rack and a second rack meshing with the multiple synchronous gears. The aforementioned first rack and second rack are arranged on opposite sides of the multiple synchronous gears, and the first rack is fixedly connected to the movable frame; the second rack is slidably connected to the fixed frame. The rotating shaft is rotatably connected to the fixed frame and is used to guide the sliding direction of the flexible screen. One end of the flexible screen is fixedly connected to the moving frame, and the other end is fixedly connected to the second rack after passing around the rotating shaft. When the flexible screen slides with the moving frame, the moving frame will drive the first gear to slide, thereby driving multiple synchronous gears to rotate. The rotation of the synchronous gears will drive the second rack to slide, so as to realize the synchronous movement of the upper flexible screen (the flexible screen exposed outside the fixed frame) and the lower flexible screen (the flexible screen located inside the fixed frame), so as to ensure that the flexible screen maintains a constant length during the opening and closing process and improve the effect of the flexible screen when unfolding.

[0005] In practice, when the moving frame slides out from inside the fixed frame to outside the fixed frame, the flexible screen moves with the moving frame to the outside of the fixed frame. At this time, the size of the flexible screen exposed outside the fixed frame increases, and the terminal can switch from the closed state to the unfolded state. Conversely, when the moving frame slides in from outside the fixed frame to inside the fixed frame, the flexible screen retracts with the moving frame to the inside of the fixed frame. At this time, the size of the flexible screen exposed outside the fixed frame decreases, and the terminal can switch from the unfolded state to the closed state.

[0006] In addition, when the moving frame slides relative to the fixed frame, it can drive the first rack to slide in the same direction. The sliding of the first rack can drive the synchronous gear to rotate, and the rotation of the synchronous gear will drive the second rack to slide. Since the first rack and the second rack are located on both sides of the multiple synchronous gears, the sliding direction of the second rack is opposite to the sliding direction of the first rack, thereby driving the flexible screen to move in the direction of the rotation axis, so that the flexible screen slides out of the outside of the fixed frame.

[0007] In one specific implementation, the hinge mechanism further includes an elastic retraction mechanism connected to the second rack and used to pull the flexible screen back into the fixed frame. This ensures that the flexible screen is constantly stretched during opening and closing, guaranteeing a flat surface and preventing arching.

[0008] In one specific implementation, the elastic contraction mechanism includes a rotating shaft rotatably connected to the fixed frame, and a coil spring wound around the rotating shaft; one end of the coil spring is fixedly connected to the rotating shaft, and the other end is fixedly connected to the second rack. The flexible screen is pulled by the coil spring.

[0009] In one specific implementation, the rotating shaft and the pivot shaft are arranged along the sliding direction of the movable frame, and the rotating shaft and the pivot shaft are respectively located at opposite ends of the fixed frame. This ensures that there is sufficient space within the fixed frame to accommodate the flexible screen.

[0010] In one specific implementation, the elastic contraction mechanism is a tension spring, one end of which is fixedly connected to the fixed frame, and the other end is fixedly connected to the second rack. The tension spring is used to pull the flexible screen.

[0011] In one specific implementation, the plurality of synchronizing gears are arranged in a single row along the sliding direction of the moving frame.

[0012] In one specific implementation, the transmission assembly may further include a synchronizing link, which is rotatably connected to multiple synchronizing gears, with the connection positions of the synchronizing link and each synchronizing gear offset from the axis of the synchronizing gear. When one of the synchronizing gears is driven to rotate by a first rack or a second rack, the synchronizing gear can drive the synchronizing link to move, and the synchronizing link can then drive the other synchronizing gears to rotate, thereby achieving synchronous rotation of multiple synchronizing gears.

[0013] In one specific implementation scheme, each synchronizing gear is provided with a locating pin off-center from the axis, and the locating pin is rotatably connected to the synchronizing link, thereby realizing the rotatable connection between the synchronizing link and each synchronizing gear.

[0014] In one specific implementation, the lengths of the first rack and the second rack are not less than the center distance between two adjacent synchronous gears, so as to ensure that when the first rack and the second rack slide, they are engaged with at least one synchronous gear, thus avoiding the situation where the synchronous gear does not rotate during the sliding process of the first rack and the second rack.

[0015] In one specific implementation, a slide rail is provided on the fixed frame, and the second rack is slidably mounted on the slide rail, thereby achieving a sliding engagement between the second rack and the fixed frame. Attached Figure Description

[0016] Figure 1 A schematic diagram of the closed state of a terminal provided in an embodiment of this application;

[0017] Figure 2 A side view of the terminal in a closed state provided in an embodiment of this application;

[0018] Figure 3 A schematic diagram of the unfolded state of the terminal provided in an embodiment of this application;

[0019] Figure 4 A side view of the terminal in its unfolded state as provided in an embodiment of this application;

[0020] Figure 5 This is a schematic diagram of the terminal structure provided in the embodiments of this application;

[0021] Figure 6 This is a schematic diagram of the hinge mechanism provided in an embodiment of this application;

[0022] Figure 7 A schematic diagram of the hinge mechanism in the closed state as provided in an embodiment of this application;

[0023] Figure 8 This is a schematic diagram of the flexible screen in the closed state provided in an embodiment of this application;

[0024] Figure 9 A schematic diagram of the hinge mechanism in the unfolded state of the terminal provided in this application embodiment;

[0025] Figure 10 A schematic diagram of the flexible screen in the unfolded state of the terminal provided in this application embodiment;

[0026] Figure 11 This is a schematic diagram of the state of the synchronization gear when the terminal is in the closed state, as provided in an embodiment of this application.

[0027] Figure 12 A schematic diagram of the state of the synchronization gear when the terminal is in the unfolded state, as provided in the embodiments of this application. Detailed Implementation

[0028] To facilitate understanding of the terminal provided in the embodiments of this application, it should be noted that the terms "first" and "second" used in the embodiments of this application are merely definitions for the convenience of distinguishing components and do not represent any actual meaning.

[0029] To facilitate understanding of the terminal provided in the embodiments of this application, the main structure of the terminal will be described below with reference to the accompanying drawings. First, refer to... Figure 1 and Figure 2 , Figure 1 A schematic diagram of the terminal in the closed state is shown. Figure 2 A side view of the terminal in its closed state is shown. The terminal provided in this embodiment includes a movable frame 20 and a fixed frame 10. The movable frame 20 is slidably mounted on the fixed frame 10 and can slide relative to the fixed frame 10. Figure 1 and Figure 2 In the first direction indicated by the middle arrow, the movable frame 20 can slide back and forth in that direction. When the movable frame 20 slides into the fixed frame 10, the terminal is in a closed state, and at this time, the flexible screen 30 is in an undeployed state. (See also...) Figure 3 and Figure 4 , Figure 3 This diagram shows the terminal in its unfolded state. Figure 4 The diagram shows a side view of the terminal in its unfolded state. When the movable frame 20 slides out of the fixed frame 10, the terminal is in its unfolded state. At this time, the flexible screen 30 slides out along with the movable frame 20. Figure 1 and Figure 3It can be seen that when the terminal is in both the closed and unfolded states, the size of the exposed flexible screen 30 is larger in the unfolded state and smaller in the closed state. The switching between the closed and unfolded states is achieved by the sliding of the movable frame 20 relative to the fixed frame 10. The terminal is in either the closed or unfolded state when the movable frame 20 slides to different positions. Simultaneously, to correspond to the sliding of the movable frame 20, part of the flexible screen 30 is located within the fixed frame 10, and part is exposed outside the fixed frame 10. When the terminal is unfolded, the portion of the flexible screen 30 located within the fixed frame 10 slides out to increase the size of the exposed flexible screen 30; when the terminal is closed, the exposed portion of the flexible screen 30 retracts into the fixed frame 10 to correspond to the reduced size of the flexible screen 30. As can be seen from the above description, when the terminal switches between the unfolded and closed states, the flexible screen 30 needs to change along with the moving frame 20. However, in the prior art, the flexible screen 30 inevitably becomes uneven during the process of changing with the mobile terminal. Therefore, this application provides a terminal to improve the flatness of the flexible screen 30 when the terminal is unfolded or closed. To facilitate understanding of the terminal provided in this application, a detailed description is provided below with reference to the specific accompanying drawings.

[0030] refer to Figure 5 , Figure 5 A schematic diagram of the structure of a terminal provided in an embodiment of this application is shown. The terminal provided in this embodiment is a sliding terminal, and its main structure includes a fixed frame 10, a movable frame 20, a flexible screen (not shown), and a hinge mechanism 40.

[0031] The fixed frame 10 serves as the main structure of the terminal, primarily used to support the terminal's electronic components, such as the motherboard and battery. Additionally, the fixed frame 10 also functions as a housing for the flexible screen; when the terminal is in a closed state, a portion of the flexible screen can be housed within the fixed frame 10.

[0032] The movable frame 20 serves as a component that expands the display area of ​​the terminal. The movable frame 20 is slidably fitted within the fixed frame 10, and its sliding relative to the fixed frame 10 changes the exposed size of the flexible screen. For example, when the movable frame 20 slides outside the fixed frame 10, the terminal is in an unfolded state (e.g., ...). Figure 3 As shown in the diagram, when the movable frame 20 slides into the fixed frame 10, the terminal is in a closed state (as shown in the diagram). Figure 1 (As shown).

[0033] As a display component of the terminal, the flexible screen moves with the movable frame 20 when the terminal is in an unfolded or closed state, thereby changing the display size of the terminal. One end of the flexible screen is fixed to the movable frame 20, and when the movable frame 20 slides, it can drive the flexible screen to slide, thereby increasing the size of the flexible screen exposed outside the terminal. The flexible screen portion is located inside the fixed frame 10, and the other end of the flexible screen is connected to the hinge mechanism 40. According to the position of the flexible screen, it is divided into an upper flexible screen and a lower flexible screen, wherein the upper flexible screen is exposed outside the fixed frame 10, and the lower flexible screen is hidden inside the fixed frame 10.

[0034] The hinge mechanism 40 is used to limit the flexible screen when it moves with the moving frame 20, so that the sliding distance of the moving frame 20 is consistent with the size of the flexible screen sliding out from the fixed frame 10, thereby ensuring that the flexible screen does not wrinkle during the unfolding process.

[0035] To facilitate the description of the hinge mechanism 40, a first direction and a second direction are established for reference. The first direction is the direction in which the moving frame 20 slides relative to the fixed frame 10. The second direction is perpendicular to the first direction and lies in the same plane as the first direction, which is perpendicular to the thickness direction of the fixed frame 10.

[0036] The fixed frame 10 has two ends along the first direction, namely the first end and the second end, and the movable frame 20 slides out of the fixed frame 10 from the first end. The two ends of the fixed frame 10 along the second direction are respectively named the first side and the second side of the fixed frame 10.

[0037] The hinge mechanism 40 includes an elastic retraction mechanism 43, a rotating shaft 42, and a transmission assembly. The transmission assembly includes two opposing gear assemblies 41, which can be positioned on opposite sides of the fixed frame 10, i.e., the first and second sides of the fixed frame. Alternatively, one of the two synchronous gear assemblies 41 can be located on one side of the fixed frame 10, such as the first or second side, while the other can be located at a position between the first and second sides of the fixed frame 10. Of course, both synchronous gear assemblies 41 can also be located between the first and second sides of the fixed frame 10, with a certain interval between them. The rotating shaft 42 guides the flexible screen to slide out of the fixed frame 10, and the elastic retraction mechanism 43 provides tension to the flexible screen when it slides out of or into the fixed frame 10, ensuring the flatness of the flexible screen when it slides out of or into the fixed frame 10.

[0038] refer to Figure 6 , Figure 6A schematic diagram of the hinge mechanism on one side of the fixed frame 10 is shown. Each gear assembly 41 includes multiple synchronous gears 412 rotatably connected to the fixed frame 10, and a first rack 411 and a second rack 413 meshing with the multiple synchronous gears 412. The structure of the gear assembly 41 is described below.

[0039] Multiple synchronizing gears 412 are used to ensure that the sliding distances of the first rack 411 and the second rack 413 are the same. When the synchronizing gears 412 move, the multiple synchronizing gears 412 rotate synchronously to ensure that the relative movement distances of the first rack 411 and the second rack 413, which mesh with the synchronizing gear 412 respectively, are equal. When multiple synchronizing gears 412 are provided, the multiple synchronizing gears 412 are arranged in a single row along a first direction, and the axis around which each synchronizing gear 412 rotates is parallel to a second direction. Figure 6 The example shows four synchronizing gears 412, but it should be understood that the number of synchronizing gears 412 is not specifically limited in the embodiments of this application. The number of synchronizing gears 412 can be three, four, five, six, etc. In specific settings, different numbers of synchronizing gears 412 can be set as needed, as long as it is ensured that the first rack 411 and the second rack 413 maintain at least one synchronizing gear 412 when sliding relative to each other.

[0040] The first rack 411 and the second rack 413 are arranged on opposite sides of the plurality of synchronizing gears 412, and the first rack 411 and the second rack 413 can slide relative to the fixed frame 10 respectively. For example, the fixed frame 10 is provided with a slide rail, the length direction of which is along a first direction, and the second rack 413 is slidably mounted on the slide rail, enabling the second rack 413 to slide relative to the fixed frame 10. In addition, the movable frame 20 can slide relative to the fixed frame 10, therefore the second rack 413, which is fixedly connected to the movable frame 20, can also slide relative to the fixed frame 10.

[0041] The first rack 411 and the second rack 413 can slide relative to each other in a first direction by being driven by multiple synchronous gears 412. When the multiple synchronous gears 412 rotate, they drive the first rack 411 and the second rack 413 to slide synchronously, so as to realize that the first rack 411 and the second rack 413 move towards each other or away from each other.

[0042] It should be understood that, to ensure the stability of the first rack 411 and the second rack 413 during movement, the lengths of both racks 411 and 413 are not less than the center distance between two adjacent synchronous gears 412. For example, if the length of the first rack 411 is d1 and the center distance between the two synchronous gears 412 is d2, then d1 > d2. This ensures that when the first rack 411 slides, it engages with at least one synchronous gear 412, preventing the synchronous gear 412 from not rotating during the sliding process. Similarly, if the length of the second rack 413 is d3, then d3 > d2.

[0043] The rotating shaft 42 is rotatably connected to the fixed frame 10 and is used to guide the sliding direction of the flexible screen. For example, the rotating shaft 42 is located at the second end of the fixed frame 10, the length direction of the rotating shaft 42 is along the second direction, and the axis around which the rotating shaft 42 rotates is parallel to the axis around which the plurality of synchronous gears 412 rotate.

[0044] When the flexible screen engages with the hinge mechanism, one end of the flexible screen is fixedly connected to the moving frame 20. Since the first rack 411 is fixedly connected to the moving frame 20, one end of the flexible screen is also fixed relative to the first rack 411. The other end of the flexible screen is fixedly connected to the second rack 413 after passing around the rotation axis 42. The upper flexible screen is the portion of the flexible screen that passes around the rotation axis 42 and is located outside the fixed frame 10, while the lower flexible screen is the portion of the flexible screen that passes around the rotation axis 42 and is located inside the fixed frame 10.

[0045] The hinge mechanism also includes an elastic retraction mechanism 43, which is an optional structure that can be set as needed when setting up the terminal.

[0046] The elastic retraction mechanism 43 is located at the first end of the terminal. The elastic retraction mechanism 43 includes a rotating shaft 431 rotatably connected to the fixed frame 10, and the length direction of the rotating shaft 431 is along the second direction. Figure 6 As shown, the rotating shaft 431 and the rotating shaft 42 are located at opposite ends of the fixed frame 10, and the rotating shaft 42 and the rotating shaft 431 are arranged along the sliding direction (first direction) of the moving frame 20, and a plurality of synchronous gears 412 are located between the rotating shaft 42 and the rotating shaft 431.

[0047] The elastic retraction mechanism 43 also includes a coil spring 432 wound around the rotating shaft 431. One end of the coil spring 432 is fixedly connected to the rotating shaft 431, and the other end is fixedly connected to the second rack 413. When the second rack 413 slides relative to the fixed frame 10, the coil spring 432 can provide the driving force for the second rack 413 to slide to the first end of the fixed frame 10 through its own elastic deformation. As can be seen from the above description, by connecting the elastic retraction mechanism 43 to the second rack 413 and pulling the flexible screen back into the fixed frame 10, the flexible screen can be continuously stretched during the opening and closing of the terminal, ensuring that the surface of the flexible screen is flat and does not arch.

[0048] It should be understood that there can be two coil springs 432, and the two coil springs 432 are arranged at both ends of the rotating shaft 431, and are respectively fixedly connected to the two second racks 413 one by one.

[0049] The elastic contraction mechanism 43 provided in this application embodiment is not limited to... Figure 6 The structure shown can also be used in other ways to pull the second rack 413. For example, the elastic contraction mechanism 43 is a tension spring, with one end fixedly connected to the fixed frame 10 and the other end fixedly connected to the second rack 413. The deformation of the tension spring can also provide the driving force for the second rack 413 to slide to the first end of the fixed frame 10.

[0050] To facilitate understanding of the hinge mechanism provided in the embodiments of this application, the following is combined with... Figures 7-10 The process of the terminal unfolding or closing is explained.

[0051] refer to Figure 7 and Figure 8 , Figure 7 This diagram illustrates the state of the hinge mechanism when the terminal is in the closed state. Figure 8 A schematic diagram of the flexible screen 30 when the terminal is in the closed state is shown. When the terminal is in the closed state, the movable frame 20 slides into the fixed frame 10 and overlaps with it. Driven by the movable frame 20, the first rack 411 is located at the second end of the fixed frame 10, and the second rack 413 is located at the first end of the fixed frame 10, in conjunction with... Figure 7 and Figure 8 It can be seen that the size of the upper flexible screen 31 is approximately equal to the size of the fixed frame 10, and the sizes of the upper flexible screen 31 and the lower flexible screen 32 in the flexible screen 30 are also approximately equal.

[0052] refer to Figure 9 and Figure 10 , Figure 9 This diagram illustrates the state of the hinge mechanism when the terminal is in the unfolded state. Figure 10The diagram illustrates the state of the flexible screen 30 when the terminal is in the closed state. When the terminal switches states, the user slides the movable frame 20, which slides out from the fixed frame 10, and the terminal begins to transition from the closed state to the unfolded state.

[0053] The movable frame 20 drives the first rack 411 to slide relative to the fixed frame 10 along the first direction. The first rack 411 drives the synchronous gear 412 meshing with it to rotate. Multiple synchronous gears 412 begin to rotate synchronously. The synchronous gear 412 meshing with the second rack 413 drives the second rack 413 to slide along the first direction. It should be noted that if the terminal is in the closed state, and the first rack 411 and the second rack 413 are located at the second end and the first end of the fixed frame 10, respectively, then during the process of the movable frame 20 sliding outward to the fixed frame 10, the first rack 411 and the second rack 413 first move towards each other (gradually approaching), and then after crossing, move away from each other (gradually moving away). If the terminal assembly is in the closed state, and the first rack 411 and the second rack 413 are positioned opposite each other in the thickness direction of the terminal, or if the first rack 411 is positioned closer to the first end of the fixed frame 10 and the second rack 413 is positioned closer to the second end of the fixed frame 10, then during the sliding of the moving frame 20 outward from the fixed frame 10, the first rack 411 and the second rack 413 move in opposite directions. During the sliding of the first rack 411 and the second rack 413, the first rack 411 drives a portion of the lower flexible screen 32 located within the fixed frame 10 to slide out of the fixed frame 10 around the rotation axis 42. The size of the upper flexible screen 31 of the flexible screen 30 increases, and because the first rack 411 and the second rack 413 move relative to each other through the synchronous gear 412, the portion of the lower flexible screen 32 that slides out matches the increased size of the upper flexible screen 31 (the distance the moving frame 20 slides), thus ensuring that the flexible screen 30 remains flat and does not wrinkle when the terminal is unfolded.

[0054] In addition, during the sliding process of the second rack 413 relative to the fixed frame 10, the coil spring 432 in the elastic contraction mechanism 43 is stretched. The elastic force of the coil spring 432 ensures that the second rack 413 can overcome the gap between the gear and the rack during the sliding process and can always stretch the flexible screen 30, thereby further ensuring the flatness of the flexible screen 30 when the terminal is unfolded.

[0055] Similarly, when the terminal changes from an unfolded state to a closed state, the elastic retraction mechanism 43 can drive the second rack 413 to slide relative to the fixed frame 10, thereby providing the driving force for the flexible screen 30 when it retracts into the fixed frame 10, ensuring the flatness of the flexible screen 30 when the terminal state is switched.

[0056] From the above Figures 7-10As can be seen from the changes in the terminal state shown, the hinge mechanism provided in this embodiment can always provide tension to the flexible screen 30 during the closing or unfolding of the terminal, so as to ensure the flatness of the flexible screen 30 during the sliding process.

[0057] refer to Figure 11 and Figure 12 , Figure 11 A schematic diagram of the state of the synchronization gear 412 when the terminal is in the closed state is shown. Figure 12 A schematic diagram of the state of the synchronization gear 412 when the terminal is in the unfolded state is shown. Figure 11 and Figure 12 Some of the labels in the text can be referenced. Figure 6 The same reference numerals are used in the diagram. Multiple synchronous gears 412 are driven to rotate synchronously via synchronous connecting rods 414. Each synchronous gear 412 is eccentrically connected to the synchronous connecting rod 414. For example, each synchronous gear 412 is eccentrically provided with a locating pin 415. For example, the axis of each synchronous gear 412 is O1, and the axis of the locating pin 415 is O2. The distance d0 between the axes O1 and O2 is greater than 0. Each locating pin 415 is rotatably connected to the synchronous connecting rod 414, and the axis of rotation of the locating pin 415 relative to the synchronous connecting rod 414 is parallel to the axis around which each synchronous gear 412 rotates. When one of the synchronous gears 412 is driven to rotate by the first rack 411 or the second rack 413, it causes the locating pin 415 on that synchronous gear 412 to rotate around the axis O1 of the synchronous gear 412, simultaneously causing the synchronous connecting rod 414 to move. The synchronous connecting rod 414 then drives the other synchronous gears 412 to rotate synchronously.

[0058] Please refer to the above. Figure 11 and Figure 12 When the terminal changes from the closed state to the unfolded state, the first rack 411 drives the synchronous gear 412 meshing with it to rotate counterclockwise, which drives the synchronous connecting rod 414 to swing in the first direction, thereby driving all the synchronous gears 412 to rotate counterclockwise, so as to realize the synchronous rotation of all the synchronous gears 412.

[0059] As an extension of this application, in the structure for enabling the flexible screen to slide out of the fixed frame, in addition to the gear and rack structure described above, other similar solutions can be adopted. For example, the flexible screen can be slid by a gear and a timing belt. Specifically, multiple gears are arranged in a single row, and the timing belt is fitted onto the gears and meshes with each gear. A closed timing belt is used, and the moving frame and the end of the flexible screen located within the fixed frame are fixedly connected to different parts of the timing belt. When the moving frame slides out or into the fixed frame, it drives the timing belt to slide, thereby driving the flexible screen to slide. Alternatively, a non-closed timing belt can be used, with one end fixedly connected to the moving frame and the other end fixedly connected to the end of the flexible screen located within the fixed frame. During the process of the moving frame sliding in or out relative to the fixed frame, the timing belt can drive the flexible screen to slide synchronously.

[0060] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A terminal, characterized in that, It includes a fixed frame, a movable frame, a flexible screen, and a hinge mechanism; among which, The movable frame is slidably connected to the fixed frame; The hinge mechanism includes a rotating shaft and a transmission assembly; the transmission assembly includes a plurality of synchronous gears rotatably connected to the fixed frame, and a first rack and a second rack meshing with the plurality of synchronous gears; The first rack and the second rack are arranged on both sides of the plurality of synchronous gears; wherein, the first rack is fixedly connected to the movable frame; and the second rack is slidably connected to the fixed frame. The rotating shaft is rotatably connected to the fixed frame and is used to guide the sliding direction of the flexible screen; One end of the flexible screen is fixedly connected to the moving frame, and the other end is fixedly connected to the second rack after passing around the rotating shaft. When the flexible screen slides with the moving frame, the moving frame drives the first rack to slide relative to the synchronous gear, and the synchronous gear rotates to drive the second rack to slide. The plurality of synchronous gears are arranged in a single row along the sliding direction of the moving frame; The transmission assembly also includes a synchronizing link, which is rotatably connected to a plurality of synchronizing gears, and the connection position of the synchronizing link to each of the synchronizing gears is offset from the axis of the synchronizing gear.

2. The terminal as described in claim 1, characterized in that, When the movable frame slides out from inside the fixed frame to outside the fixed frame, the terminal switches from a closed state to an unfolded state; when the movable frame slides in from outside the fixed frame to inside the fixed frame, the terminal switches from an unfolded state to a closed state.

3. The terminal as described in claim 2, characterized in that, When the movable frame slides relative to the fixed frame, the first rack slides in the same direction as the movable frame, and the second rack slides in the opposite direction to the movable frame.

4. The terminal as described in claim 2, characterized in that, The hinge mechanism further includes an elastic retraction mechanism, which is connected to the second rack and used to pull the flexible screen back into the fixed frame.

5. The terminal as described in claim 4, characterized in that, The elastic contraction mechanism includes a rotating shaft rotatably connected to the fixed frame, and a coil spring wound around the rotating shaft; One end of the coil spring is fixedly connected to the rotating shaft, and the other end is fixedly connected to the second rack.

6. The terminal as described in claim 5, characterized in that, The rotating shaft and the pivot are arranged along the sliding direction of the movable frame, and the rotating shaft and the pivot are respectively located at opposite ends of the fixed frame.

7. The terminal as described in claim 4, characterized in that, The elastic contraction mechanism is a tension spring, one end of which is fixedly connected to the fixed frame and the other end is fixedly connected to the second rack.

8. The terminal as described in claim 1, characterized in that, Each of the synchronizing gears is provided with a locating pin off-center from the axis, and the locating pin is rotatably connected to the synchronizing link.

9. The terminal as described in claim 1, characterized in that, The lengths of both the first rack and the second rack are not less than the center distance between two adjacent synchronous gears.

10. The terminal as described in any one of claims 1 to 9, characterized in that, The fixed frame is provided with a slide rail, and the second rack is slidably mounted on the slide rail.

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