Rollable screen expands and contracts synchronously with sliding support electronic devices

Abstract

This invention relates to an electronic device with a sliding support that synchronizes with the unfolding and retraction of a rollable screen. It includes a rollable base and a rollable screen. The rollable base comprises a fixed base, a movable base, and a follower support. The follower support includes multiple support bodies slidably connected along the unfolding direction of the rollable screen, arranged sequentially from the outside to the inside along the width direction of the rollable screen. On one hand, this invention, based on the sequential arrangement of multiple support bodies inside and outside and their flush support on the back of the screen, enables synchronized sliding support during screen unfolding and retraction, which is beneficial for overall structural thinning and weight reduction, effectively improving the user experience. On the other hand, based on the width variation of each support body and the resulting spaced support surfaces, the contact area with the screen is reduced to decrease wear, while avoiding the impact of contact surface attraction on screen retraction, effectively reducing power consumption and improving the screen's retraction feel.

Description

Technical Field

[0001] This invention belongs to the field of communication equipment, specifically relating to an electronic device that is synchronous with the expansion and contraction of a rollable screen and has a sliding support. Background Technology

[0002] As we all know, in order to display richer information to users, improve the efficiency of human-computer interaction, and enhance the user experience, various electronic devices (such as mobile phones, tablets, etc.) are constantly being updated and replaced, and the screen size is getting bigger and bigger. Correspondingly, electronic devices with large screens bring problems of inconvenience in carrying and storing.

[0003] Therefore, to solve the above problems, flexible rollable screen technology has emerged. It mainly adopts a folding structure or rolls the screen onto a roller. By releasing or retracting the rollable screen, display segments of different sizes can be obtained. For example, Chinese Patent No. CN222545874U discloses a display device in which the telescopic slide rail includes a first strip rail, a second strip rail, and at least one intermediate strip rail. The first strip rail, at least one intermediate strip rail, and the second strip rail are sequentially slidably connected along the telescopic direction of the telescopic slide rail. The telescopic direction of the telescopic slide rail is parallel to the telescopic direction of the telescopic bracket. The first strip rail is connected to the first housing, and the second strip rail is connected to the second housing.

[0004] However, in actual use, the telescopic sliding rail structure used in existing technologies is complex, not only occupying a large space and being heavy, but also unable to provide synchronous support for the screen during telescopic movement due to the limitations of the existing telescopic sliding rail structure. It is necessary to add a telescopic bracket to support the screen, resulting in the overall bulkiness of the electronic device, which greatly affects the user experience. In addition, the support surface formed by existing technologies is large, which is prone to wear and tear on the screen. Furthermore, the screen and the support surface are in close contact and tend to stick to each other under air pressure, creating resistance to the screen retraction, affecting the screen retraction quality, and resulting in high power consumption. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an improved electronic device that is synchronous with the roll-up and roll-down of the screen and has a sliding support.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] An electronic device that slides and retracts synchronously with a rollable screen includes a rollable base and a rollable screen. The rollable base includes a fixed base, a movable base, and a follower support. The follower support includes multiple support bodies that are slidably connected along the rollable screen's retraction direction. The multiple support bodies are arranged sequentially from the outside to the inside along the width direction of the rollable screen, and the support surfaces of the multiple support bodies are flush and support the back of the rollable screen. The support surfaces formed by each support body are distributed at intervals along the width direction of the rollable screen, and each support body gradually narrows from the side away from the back of the rollable screen towards the support surface. When the rollable screen retracts, the multiple support bodies slide relative to each other and retract synchronously.

[0008] According to a specific embodiment and preferred aspect of the present invention, the two outermost and innermost supports are fixed relative to each other in the width direction of the rollable screen, and multiple supports abut against each other from the outside to the inside, forming mutual restraints in the width direction of the rollable screen; and / or, there are two follower supports symmetrically arranged on opposite sides of the rollable screen. This increases the compactness of the structure between the supports, and based on the mutual restraints between the supports, effectively enhances the stability of the overall structure and improves the unfolding and retracting quality of the rollable screen.

[0009] Preferably, each support includes a first part, a second part, and a third part fixed to the outside of the first part. The inner side of the first part has a groove extending along the unfolding direction of the roll-up screen. The second part forms a support surface, and the third part is slidably connected within the groove of an adjacent first part. The groove extends through both ends of the corresponding first part, facilitating the insertion and assembly between adjacent supports.

[0010] Preferably, in the orthographic projection of the rollable screen in the unfolding direction, the grooves of the multiple supports are aligned internally and externally; and / or, the cross-section of each groove is T-shaped. Here, the internal and external alignment of the grooves of the multiple supports is beneficial to improving the stability of internal and external sliding.

[0011] Preferably, each slide has a first limiting part and a second limiting part at both ends. As the rollable screen reaches its minimum or maximum unfolded area, each third segment abuts against the first or second limiting part. The outer wall of the second segment is flush with the outer wall of the first segment, and the cross-section of the second segment is trapezoidal, narrower at the top and wider at the bottom. This allows for precise control of the maximum unfolding stroke of the entire machine. Furthermore, the trapezoidal structure provides stronger support for the edges of the rollable screen, reduces the probability of deformation, and extends the service life.

[0012] Specifically, the first limiting part is a limiting post detachably connected to one end of the first split body; the other end of the first split body is recessed from the inner wall outward to form a groove communicating with the slide groove; the second limiting part is a limiting module embedded in the groove, and the adjacent first split body maintains a blocking effect on the limiting module during sliding. Here, the extension and retraction stroke of each support body is precisely controlled based on the first and second limiting parts, and the positioning of the second limiting part is achieved by the cooperation between the support bodies, making disassembly and assembly simple and convenient.

[0013] Furthermore, the limiting module includes a first mold and a second mold that intersect perpendicularly. The first mold is inserted into a slide groove and extends along the slide groove, while the second mold is inserted into a recess. Based on the cooperation of the first and second molds within the slide groove and the recess, the limiting module can be quickly aligned and installed.

[0014] Preferably, a connecting module is provided on the outer side of the first segment, and the third segment is disposed on the connecting module and fits against the inner wall of the adjacent slide.

[0015] Specifically, the connecting module includes a first block and a second block spaced apart along the unfolding direction of the rollable screen. The first block and the second block are slidably connected in a sliding groove, and a third segment is disposed between the first block and the second block. The first segment is made of metal, and the third segment is made of plastic. Therefore, while increasing the overall structural strength, the frictional force between the third segment and the first segment is reduced.

[0016] According to another specific embodiment and preferred aspect of the invention, the follower support further includes a connecting body fixedly connected to the movable seat, and the innermost support body is slidably connected to the connecting body along the unfolding direction of the roll-up screen.

[0017] Preferably, the innermost support has a groove extending along the retracting direction of the roll-up screen, and limiting portions are formed at both ends of the groove. The connecting body is slidably connected in the groove and moves between the two limiting portions.

[0018] Furthermore, when the rollable screen is rolled up to its smallest display state, multiple support bodies and connectors simultaneously abut against the fixed base from one end. Here, in the smallest unfolded state of the entire unit, the support surfaces formed by each support body can be arranged side by side from the outside to the inside to cooperate in supporting the rollable screen.

[0019] In addition, the mounting base has an opening for the roll-up screen to pass through, and each support surface is flush with the bottom edge of the opening.

[0020] Due to the implementation of the above technical solutions, the present invention has the following advantages compared with the prior art:

[0021] The telescopic sliding rail structure used in existing technologies is complex, not only occupying a large space and being heavy, but also unable to provide synchronous support for the screen during telescopic movement due to the limitations of the existing telescopic sliding rail structure. It is necessary to add a telescopic bracket to support the screen, resulting in the overall bulkiness of electronic devices, which greatly affects the user experience. In addition, the large support surface formed is prone to wear and tear on the screen, and the screen and support surface are easily attracted to each other under air pressure, which creates resistance to the screen retraction, affects the screen retraction quality, and has high power consumption. This application presents an overall design for a sliding support type electronic device that synchronizes with the unfolding and retraction of a rollable screen. This design cleverly addresses the shortcomings and defects of existing technologies. When this electronic device is used, the rollable screen is released or rolled up from the fixed base. It is based on a follow-up support composed of multiple support bodies arranged sequentially from the outside to the inside along the width direction of the rollable screen. The support surfaces formed by each support body are spaced apart along the width direction of the rollable screen. As the rollable screen unfolds and retracts, the multiple support bodies slide relative to each other and unfold synchronously. The support surfaces formed by each support body are flush and maintain support for the back of the rollable screen. Simultaneously, each support body extends from the side furthest from the back of the rollable screen... The support surface gradually narrows towards the support facets to ensure that the support body maintains a narrow facet to support the back of the rollable screen. Therefore, compared with the prior art, this invention, on the one hand, is based on multiple support bodies arranged sequentially inside and outside and flush with the back of the screen, which can achieve follow-up and synchronous sliding support during screen retraction and extension, which is conducive to the thinning and weight reduction design of the overall structure and effectively improves the user experience; on the other hand, based on the width variation of each support body and the spacing of the support facets, the contact area with the screen is reduced to reduce wear, while avoiding the influence of contact surface attraction on screen roll-up, effectively reducing power consumption and improving the screen roll-up texture. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 This is a three-dimensional structural diagram (folded state) of the electronic device of the present invention, which is synchronous with the roll-up and roll-down screen and has a sliding support.

[0024] Figure 2 for Figure 1 A three-dimensional structural diagram of the coil seat;

[0025] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the coiled seat after unfolding;

[0026] Figure 4 for Figure 1 Front view of the coiled seat;

[0027] Figure 5 for Figure 4 Schematic diagram of the sectional view along the central AA direction;

[0028] Figure 6 for Figure 5 Enlarged schematic diagram of a local part of the structure;

[0029] Figure 7 for Figure 2 Enlarged structural diagram of a single support structure;

[0030] Figure 8 for Figure 2 Enlarged structural diagram of a single support structure (from another perspective);

[0031] Wherein: 1. Curling seat; 10. Fixed seat; k. Opening; 11. Moving seat; 12. Follower support; 120. Support body; a1. First part; a10. Slide groove; a11. Insert groove; a12. Connecting module; a121. First block; a122. Second block; a2. Second part; m. Supporting surface; a3. Third part; b1. First limiting part; b2. Second limiting part; b21. First mold body; b22. Second mold body; 121. Connecting body;

[0032] 2. Rollable screen. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0034] 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", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are 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, and therefore should not be construed as a limitation of this application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0038] like Figures 1 to 8 As shown, the electronic device with synchronous expansion and contraction of the rollable screen and sliding support involved in this embodiment includes a rollable base 1 and a rollable screen 2.

[0039] Specifically, the curling seat 1 includes a fixed seat 10, a movable seat 11, and a follower support 12. One end of the curling screen 2 is wound into the fixed seat 10 by a winding roller set on the fixed seat 10, or released from the fixed seat 10. The other end of the curling screen 2 is fixed on the movable seat 11, and the movable seat 11 moves closer to or further away from the fixed seat 10 as the curling screen 2 moves in and out.

[0040] The follower support 12 includes multiple support bodies 120 and a connecting body 121 that are slidably connected along the unfolding direction of the rollable screen 2. The multiple support bodies 120 are arranged sequentially from the outside to the inside along the width direction of the rollable screen 2, and the support surfaces of the multiple support bodies 120 are flush and support the back of the rollable screen 2. The support surfaces m formed by each support body 120 are distributed at intervals in the width direction of the rollable screen 2, and each support body 120 gradually narrows from the side away from the back of the rollable screen 2 towards the support surface m. When the rollable screen 2 unfolds, the multiple support bodies 120 slide relative to each other and unfold synchronously. In this embodiment, there are 3 support bodies 120 and 1 connecting body 121.

[0041] In this example, there are two follower supports 12, which are symmetrically arranged on opposite sides of the roll-up screen 2. The structure of the other follower support 12 will be clear if one of them is described below.

[0042] In some specific embodiments, the two outermost and innermost support bodies 120 are relatively fixed in the direction of the rollable screen width 2. Multiple support bodies 120 abut against each other from the outside inwards, forming mutual restraints in the direction of the rollable screen width 2. The connecting body 121 is fixedly connected to the movable base 11, and the innermost support body 120 is slidably connected to the connecting body 121 along the roll-up / unroll-down direction of the rollable screen 2. This increases the compactness of the structure between the support bodies, and, based on the mutual abutment and restraint between the support bodies, effectively enhances the stability of the overall structure and improves the roll-up / unroll-down feel of the rollable screen 2.

[0043] The fixed base 10 has an opening k through which the rollable screen 2 passes, and each supporting surface m is flush with the bottom edge of the opening k. Each support body 120 includes a first part a1, a second part a2, and a third part a3 fixed to the outside of the first part a1. The inner side of the first part a1 has a groove a10 extending along the unfolding direction of the rollable screen. The second part a2 is integrally formed with the first part a1 and forms the supporting surface m. The outer wall of the second part a2 is flush with the outer wall of the first part a1, and the cross-section of the second part a2 is a trapezoid that is narrower at the top and wider at the bottom. The third part a3 is slidably connected in the groove a10 of the adjacent first part a1. The groove a10 passes through both ends of the corresponding first part a1. Based on the through groove a10, it is convenient to insert and assemble adjacent support bodies 120.

[0044] Meanwhile, in the orthographic projection of the rollable screen in the unfolding direction, the grooves a10 of the multiple support bodies 120 are aligned internally and externally, and the cross-section of each groove a10 is T-shaped. This internally and externally aligned arrangement of the grooves a10 of the multiple support bodies 120 helps to improve the stability of internal and external sliding.

[0045] For ease of implementation, each slide a10 is provided with a first limiting part b1 and a second limiting part b2 at both ends. As the rollable screen 2 is at its minimum or maximum unfolded area, each third segment a3 abuts against the first limiting part b1 or the second limiting part b2. This achieves precise control over the maximum unfolding stroke of the entire machine. Moreover, based on the trapezoidal structure, it provides stronger support for the edge of the rollable screen 2, reduces the probability of deformation, and extends its service life.

[0046] In some specific embodiments, the first limiting part b1 is a limiting post (e.g., a pin) detachably connected to one end of the first split a1; the other end of the first split a1 is recessed outward from the inner wall to form a groove a11 communicating with the slide groove a10; the second limiting part b2 is a limiting module embedded in the groove a11, and the adjacent first split a1 remains to block the limiting module during sliding. Here, the extension and retraction stroke of each support 120 is precisely controlled based on the first and second limiting parts, and the positioning of the second limiting part b2 is achieved by the cooperation between the supports, making disassembly and assembly simple and convenient.

[0047] Furthermore, the limiting module includes a first module b21 and a second module b22 that intersect perpendicularly. The first module b21 is inserted into and extends along the slide groove a10, while the second module b22 is inserted into the recess a11. Based on the cooperation of the first module b21 and the second module b22 within the slide groove a10 and the recess a11, the limiting module can be quickly aligned and installed.

[0048] To further facilitate implementation, a connecting module a12 is provided on the outer side of the first segment a1, and the third segment a3 is disposed on the connecting module a12 and fits against the inner wall of the adjacent slide groove a10.

[0049] Specifically, the connecting module a12 includes a first block a121 and a second block a122 spaced apart along the unfolding direction of the rollable screen. The first block a121 and the second block a122 are slidably connected within the slide groove a10, and a third component a3 is disposed between the first block a121 and the second block a122. The first component a1 is made of metal, and the third component a3 is made of plastic. Therefore, while increasing the overall structural strength, the frictional force between the third component a3 and the first component a1 is reduced.

[0050] In addition, to further facilitate processing and assembly, a groove a10 extending along the retracting direction of the roll-up screen is formed on the inner side of the innermost support 120. Limiting portions are formed at both ends of the groove a10. The connecting body 121 is slidably connected in the groove a10 and moves between the two limiting portions (similar to the sliding connection structure between adjacent supports).

[0051] In some specific embodiments, when the rollable screen is rolled up to its smallest display state, multiple support bodies 120 and connectors 121 simultaneously abut against the fixed base 10 from one end. Here, the support surfaces m formed by each support body 120 can be arranged side by side from the outside to the inside to cooperate in supporting the rollable screen.

[0052] In summary, with this electronic device, the rollable screen is released or rolled up from the fixed base. Based on a follow-up support composed of multiple support bodies arranged sequentially from the outside to the inside along the width direction of the rollable screen, and with the support surfaces formed by each support body spaced apart along the width direction of the rollable screen, the multiple support bodies slide relative to each other and roll up and down synchronously as the rollable screen unfolds and retracts. The support surfaces formed by each support body are flush and maintain support for the back of the rollable screen. Simultaneously, each support body gradually narrows from the side away from the back of the rollable screen towards the support surfaces, ensuring that the support body maintains a narrow face to support the back of the rollable screen. Therefore, compared with the prior art, this invention, on the one hand, based on the sequential arrangement of multiple support bodies inside and outside and their flush support on the back of the screen, enables follow-up and synchronous sliding support during screen unfolding and retraction, which is beneficial for the overall structure's thinning and weight reduction design, effectively improving the user experience; on the other hand, based on the width variation of each support body and the spaced arrangement of the support surfaces, the contact area with the screen is reduced to decrease wear, while avoiding the influence of contact surface attraction on screen rolling, effectively reducing power consumption and improving the screen's rolling feel. Thirdly, the compactness of the structure between the supports is increased, and the mutual abutment and limiting between the supports effectively enhances the stability of the overall structure and improves the unfolding and retracting quality of the rollable screen. Fourthly, the alignment of the inner and outer grooves of multiple supports helps improve the stability of inner and outer sliding. Fifthly, precise control of the maximum unfolding stroke of the whole machine is achieved. Based on the trapezoidal structure, the edge support of the rollable screen is stronger, and the probability of deformation is reduced, extending the service life. Sixthly, the extension and retraction stroke of each support is precisely controlled based on the first and second limiting parts. At the same time, the positioning of the second limiting part is achieved by the cooperation between the supports, making disassembly and assembly simple and convenient. Seventhly, the cooperation of the first and second modules in the grooves and slots enables the quick alignment and installation of the limiting modules. Eighthly, the first part is made of metal and the third part is made of plastic. Therefore, while increasing the overall structural strength, the friction between the third part and the first part can be reduced. Ninthly, in the minimum unfolding state of the whole machine, the supporting surfaces formed by each support can be distributed side by side from the outside to the inside to cooperate in supporting the rollable screen.

[0053] The present invention has been described in detail above, with the aim of enabling those skilled in the art to understand and implement the invention. However, this description should not be construed as limiting the scope of protection of the invention. All equivalent changes or modifications made in accordance with the spirit and essence of the invention should be included within the scope of protection of the invention.

Claims

1. An electronic device that is synchronously extended and retracted with a rollable screen and has sliding support, comprising a rollable base and a rollable screen, wherein the rollable base includes a fixed base, a movable base, and a follower support, and the follower support includes a plurality of support bodies slidably connected along the extension and retraction direction of the rollable screen, characterized in that: The multiple support bodies are arranged sequentially from the outside to the inside along the width direction of the rollable screen, and the support surfaces of the multiple support bodies are flush and support the back of the rollable screen. The support surfaces formed by each support body are distributed at intervals in the width direction of the rollable screen, and each support body gradually narrows from the side away from the back of the rollable screen towards the support surface. When the rollable screen is rolled up and down, the multiple support bodies slide relative to each other and roll up and down synchronously. The two outermost and innermost support bodies are relatively fixed in the width direction of the rollable screen, and the multiple support bodies abut against each other from the outside to the inside and form mutual limiting in the width direction of the rollable screen. Each support body includes a first part, a second part, and a third part fixed outside the first part. The inner side of the first part has a groove extending along the rollable screen's unfolding direction. The second part forms a support surface, and the third part is slidably connected in the groove of the adjacent first part. Each pair of adjacent first parts is fitted together, and each pair of adjacent second parts is spaced apart. Each slide has a first limiting part and a second limiting part at both ends. As the rollable screen is at its minimum or maximum unfolded area, each third part abuts against the first limiting part or the second limiting part. The first limiting part is a limiting post detachably connected to one end of the first part. The other end of the first part is recessed from the inner wall to the outside to form a groove that communicates with the slide. The second limiting part is a limiting module embedded in the groove, and the adjacent first parts keep blocking the limiting module during sliding.

2. The electronic device with synchronous expansion and contraction of the rollable screen and sliding support according to claim 1, characterized in that: The follower supports are two in number and symmetrically arranged on opposite sides of the roll-up screen.

3. The electronic device with synchronous expansion and contraction of the rollable screen and sliding support according to claim 1, characterized in that: In the orthographic projection of the rollable screen in the unfolding direction, the grooves of the plurality of supports are aligned inside and out; and / or, the cross-section of each groove is T-shaped.

4. The electronic device with synchronous expansion and contraction of the rollable screen and sliding support according to claim 1, characterized in that: The outer wall of the second part is flush with the outer wall of the first part, and the cross-section of the second part is a trapezoid that is narrower at the top and wider at the bottom.

5. The electronic device with synchronous expansion and contraction of the rollable screen and sliding support according to claim 1, characterized in that: The limiting module includes a first mold and a second mold that intersect perpendicularly, wherein the first mold is inserted into the slide groove and extends along the slide groove, and the second mold is inserted into the groove.

6. The electronic device with synchronous expansion and contraction of the rollable screen and sliding support according to claim 1, characterized in that: The first part is provided with a connecting module on its outer side, and the third part is disposed on the connecting module and fits against the inner wall of the adjacent slide groove.

7. The electronic device with synchronous expansion and contraction with the rollable screen and sliding support according to claim 6, characterized in that: The connecting module includes a first block and a second block spaced apart along the roll-up / unrolling direction of the screen, wherein the first block and the second block are slidably connected in the slide groove, and the third component is disposed between the first block and the second block.

8. The electronic device with synchronous expansion and contraction of the rollable screen and sliding support according to claim 1 or 2, characterized in that: The follower support also includes a connector fixedly connected to the movable base, and the innermost support is slidably connected to the connector along the unfolding direction of the roll-up screen.

9. The electronic device with synchronous expansion and contraction of the rollable screen and sliding support according to claim 8, characterized in that: The innermost support has a groove extending along the unfolding direction of the roll-up screen. Limiting parts are formed at both ends of the groove. The connecting body is slidably connected in the groove and moves between the two limiting parts.

10. The electronic device with synchronous expansion and contraction of the rollable screen and sliding support according to claim 8, characterized in that: When the rollable screen is rolled up to its minimum display state, multiple support bodies and connectors simultaneously abut against the fixed base from one end.

11. The electronic device with synchronous expansion and contraction of the rollable screen and sliding support according to claim 1, characterized in that: The fixed base has an opening for the rollable screen to pass through, and each of the supporting surfaces is flush with the bottom edge of the opening.

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