Inner supporting structure suitable for curled screen

Abstract

According to the inner supporting structure suitable for the curled screen, one end of the curled screen is wound around a winding roller, the other end of the curled screen forms a movable end, the curled screen is unfolded or wound along with rotation of the winding roller, the movable end moves front and back along with the curled screen, and the inner supporting structure comprises a first inner supporting body, a second inner supporting body and a driving roller parallel to the winding roller. Wherein a first inner supporting plane which is close to the moving end and is fixed relative to the moving end is formed on the first inner supporting body; the second inner supporting body bypasses the driving roller and forms a second inner supporting plane which is located on the upper portion and close to the winding roller, and the first inner supporting plane and the second inner supporting plane synchronously and internally support the curled screen. Through the cooperation of the first inner support body and the second inner support body, the second inner support plane can synchronously extend or retract to match the size of the curled screen in real time in the folding and unfolding process of the curled screen under the condition that the first inner support plane keeps the inner support of the curled screen, and the inner support requirement of the curled screen folded and unfolded to any position is flexibly met.

Description

Technical Field

[0001] The utility model belongs to the field of electronic product accessories, and particularly relates to an inner supporting structure suitable for a curling screen. Background Art

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

[0003] Therefore, in order to solve the above problems, flexible rollable screen technology has emerged. It mainly rolls the rollable screen on a roll-up shaft, and obtains display segments of different sizes by releasing or rolling up the roll-up screen. For example, the Chinese patent with publication number CN111508360B discloses a flexible screen assembly and an electronic device, which includes: a shell, the shell is provided with an opening; a rotating shaft, the rotating shaft is arranged inside the shell; a flexible screen, one end of the flexible screen is connected to the rotating shaft, the flexible screen can be rolled up on the rotating shaft, and the other end of the flexible screen can pass through the opening and extend outside the shell; a telescopic bracket, the telescopic bracket is respectively connected to the shell and the flexible screen; a first driving mechanism, the first driving mechanism is installed on the shell, and the first driving mechanism is connected to the rotating shaft to drive the rotating shaft to rotate; wherein, during the unfolding of the flexible screen, the telescopic bracket extends to support the portion of the flexible screen located outside the shell.

[0004] However, in actual use, the existing technology mainly uses the support of the telescopic bracket to increase the surface tension of the screen to achieve the effect of "flattening" the screen. It is only applicable when the screen is fully opened and the telescopic bracket is fully extended (when the telescopic bracket is not fully opened, the telescopic bracket is easily folded under external force, so the stability of the support cannot be guaranteed), and it is impossible to achieve effective support for the screen at any expanded size. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an improved inner support structure suitable for a curling screen.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A kind of internal support structure suitable for rolling screen, one end of rolling screen is wound on winding roller, and the other end forms moving end, wherein the rolling screen is expanded or rolled up as the winding roller rotates, and the moving end moves back and forth accordingly, the internal support structure comprises a first internal support body, a second internal support body, and a driving roller parallel to the winding roller, wherein a first internal support plane close to the moving end and fixed relative to the moving end is formed on the first internal support body; the second internal support body bypasses the driving roller and forms a second internal support plane located above and close to the winding roller, wherein the first internal support plane and the second internal support plane synchronously support the rolling screen, and as the rolling screen is expanded or rolled up, the driving roller drives the second internal support body and drives the second internal support plane to extend or retract synchronously.

[0008] Preferably, the first inner supporting plane is arranged flush with the second inner supporting plane.

[0009] Preferably, the width of the second inner support plane is greater than or equal to the width of the curling screen. Here, it is ensured that the portion of the curling screen unwound from the winding roller is in a flattened state.

[0010] Preferably, the extension or retraction speed of the second inner support plane is equal to the unfolding or retracting speed of the rollable screen. This ensures that during the extension or retraction process, the contact points between the second inner support plane and the rollable screen remain relatively stationary, preventing friction caused by relative movement and improving the feel of the rollable screen during its unfolding or retracting.

[0011] According to a specific embodiment and preferred aspect of the present invention, the second internal support body includes multiple sheets extending axially along the drive roller and arranged side by side, and a relatively fixed flexible plate covering the surface of the multiple sheets. The flexible plate forms a second internal support plane. The drive roller drives the multiple sheets to move along the direction of expansion and contraction of the roll-up screen, and the flexible plate accordingly expands and contracts, synchronously providing internal support for the roll-up screen. The flexible plate thus provides full coverage of the roll-up screen, evenly applying force to the roll-up screen for stable expansion or contraction.

[0012] Preferably, each end of the drive roller is equipped with multiple transmission teeth spaced about its centerline. Each plate is provided with a plug-in block at each end, matching the gap between adjacent transmission teeth. As the drive roller rotates, the multiple plug-in blocks are sequentially inserted into the gap, driving the flexible plate to expand and contract. Guided by the curved guide surface, the plug-in blocks precisely enter the gap during the rotation of the drive roller to implement transmission, while also enhancing the smoothness of the extension and retraction of the second inner support body, improving the product's quality.

[0013] Specifically, an arc-shaped guide surface is formed between each two adjacent transmission teeth. Each plug-in block includes a block body fixedly connected to the corresponding sheet body and a column arranged at the end of the block body. As the driving roller rotates, the column maintains the entry or exit gap in contact with the arc-shaped guide surface.

[0014] According to another specific embodiment and preferred aspect of the present invention, the winding roller is connected to the drive roller in a transmission manner, and rotates synchronously with the drive roller as the roll-up screen retracts and extends. The second inner support body and the roll-up screen are driven separately by the same drive roller, reducing surface stress on the roll-up screen, significantly improving the roll-up screen's feel and enhancing the user experience. Furthermore, the transmission response is fast and efficient, effectively reducing the operating power consumption of the electronic device.

[0015] Preferably, the internal support structure also includes a transmission member arranged between the winding roller and the driving roller, the transmission member including a first gear and a second gear respectively arranged at both ends of the winding roller and the driving roller, and a third gear meshing with the first gear and the second gear; and / or, the driving roller is driven by at least one motor.

[0016] The internal support structure also includes a guide module extending along the direction of the roll-up screen's expansion and contraction, and a rack that meshes with the drive roller. One end of the rack slides into the guide module and glides along it in sync with the rotation of the drive roller. The coordination of the rack and guide module guides the movement of the second internal support body during its expansion and contraction, ensuring precise and stable motion.

[0017] Due to the implementation of the above technical solution, the utility model has the following advantages compared with the prior art:

[0018] The existing technology mainly uses the support of the telescopic bracket to increase the surface tension of the screen to achieve the effect of "flattening" the screen. It is only applicable when the screen is fully opened and the telescopic bracket is fully extended, and it cannot achieve effective support for the screen at any extended size. The present application makes an overall design of the structure of the internal support structure suitable for the curling screen, cleverly solving the shortcomings and defects of the existing technology. After adopting the internal support structure, first, a first internal support plane close to the moving end of the curling screen and fixed relatively to the moving end is formed by the first internal support body. Therefore, when the curling screen moves between the minimum display state and the maximum display state, the curling screen close to the moving end is always supported by the first internal support plane; secondly, when the winding roller rewinds the curling screen, the driving roller synchronously drives the second internal support body, so that the second internal support plane formed by the second internal support body is synchronously retracted to match the changes of the curling screen during retraction in real time, and the first internal support plane and the second internal support plane synchronously support the curling screen; finally, when the driving roller drives the winding roller to rotate to unfold the curling screen, the driving roller synchronously drives the second internal support body and the seat body, so that the second internal support plane formed by the second internal support body is synchronously extended to match the changes of the curling screen during retraction in real time, and the first internal support plane and the second internal support plane synchronously support the curling screen. Therefore, compared with the prior art, the utility model cooperates with the first inner support body and the second inner support body, and based on the first inner support plane, maintains the internal support for the curling screen. During the process of retracting and extending the curling screen, the second inner support plane can be synchronously extended or retracted to match the size of the curling screen in real time, flexibly meeting the internal support requirements of the curling screen when it is retracted and extended to any position. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the inner support structure of the utility model applicable to the curling screen (in the extended state);

[0021] Figure 2 for Figure 1 Schematic diagram of the structure from another perspective;

[0022] Figure 3 for Figure 1 Schematic diagram of the structural decomposition;

[0023] Figure 4 for Figure 3 A magnified schematic diagram of the local structure;

[0024] Figure 5 This is a schematic front view of the inner support structure of the utility model applicable to the curling screen (in the extended state);

[0025] Figure 6 for Figure 4 AA-direction cross-sectional view;

[0026] Figure 7 This is a schematic front view of the inner support structure of the utility model applicable to the curling screen (in the retracted state);

[0027] Figure 8 for Figure 7 BB-direction cross-sectional view;

[0028] Wherein: P, curling screen; G, winding roller;

[0029] 1. First inner support body; m1, first inner support plane;

[0030] 2, second inner support body; 20, sheet body; k0, guide block; k00, slide groove; k1, plug-in block; k10, block body; k11, column; 21, flexible plate body; m2, second inner support plane;

[0031] 3. Driving roller; 30. Transmission gear;

[0032] 4. Transmission member; 41. First gear; 42. Second gear; 43. Third gear;

[0033] 5. Guide module; c. Guide groove; 6. Rack. DETAILED DESCRIPTION

[0034] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0037] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0038] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature. It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0039] like Figures 1 to 8 As shown, the rolling screen P involved in this embodiment is wound around the winding roller G at one end and forms a moving end at the other end, wherein the rolling screen P is unfolded or reeled as the winding roller G rotates, and the moving end moves back and forth accordingly; the internal support structure suitable for the rolling screen involved in this embodiment includes a first internal support body 1, a second internal support body 2, and a driving roller 3 parallel to the winding roller G.

[0040] In some specific embodiments, the movable end of the rollable screen P is fixedly connected to the movable base of the electronic device. The first inner supporting body 1 is fixedly mounted on the movable base and defines a first inner supporting plane m1 that is adjacent to and fixed relative to the movable end of the rollable screen P. As the rollable screen P is retracted or unfolded, the movable base moves back and forth, and the first inner supporting body 1 moves synchronously therewith to maintain the first inner supporting plane m1 and the portion of the rollable screen P to be supported relative to each other. In this way, when the rollable screen P is in the minimum display state, internal support can be achieved via the first inner supporting plane m1. The first inner supporting body 1 is a horizontally arranged inner supporting template.

[0041] In this example, the driving roller 3 is close to the winding roller G and is arranged side by side; the second inner support body 2 bypasses the driving roller 3 and forms a second inner support plane m2 located above and close to the winding roller G, wherein the first inner support plane m1 and the second inner support plane m2 synchronously support the curling screen P. As the curling screen P unfolds or retracts, the driving roller drives the second inner support body 2 and drives the second inner support plane m2 to extend or retract synchronously to match the changes of the curling screen P in real time.

[0042] In some specific embodiments, the first inner supporting plane m1 is flush with the second inner supporting plane m2; the width of the second inner supporting plane m2 is greater than or equal to the width of the rollable screen P; and the extension or retraction speed of the second inner supporting plane m2 is equal to the deployment or retraction speed of the rollable screen P. This ensures that during the extension or retraction process, the contact point between the second inner supporting plane and the rollable screen remains relatively stationary to achieve internal support, avoiding friction caused by relative movement and improving the texture of the rollable screen when it is extended or retracted.

[0043] For ease of implementation, the second internal support body 2 includes multiple sheets 20 extending axially along the drive roller 3 and arranged side by side, and a relatively fixed flexible plate 21 covering the surface of the multiple sheets 20. A second internal support plane m2 is formed on the flexible plate 21. The drive roller 3 drives the multiple sheets 20 to move along the direction of expansion and contraction of the roll-up screen, and the flexible plate 21 accordingly expands and contracts, synchronously providing internal support for the roll-up screen P. Here, the flexible plate provides a fully covered internal support effect for the roll-up screen, and the roll-up screen is evenly stressed, allowing for stable expansion or contraction.

[0044] At the same time, in order to ensure that the sheet 20 and the flexible plate 21 move smoothly in the direction of the roll-up screen P, guide blocks k0 are fixedly provided on opposite sides of the sheet 20. A slide groove k00 extending along the direction of the roll-up screen is formed on the guide block k0, and the two ends of the sheet 20 are correspondingly inserted into the slide groove k00.

[0045] In some specific embodiments, the inner side of the flexible plate d1 forms multiple teeth that match the gaps between each pair of adjacent plates d0. The flexible plate d1 meshes with the multiple plates d0 through these teeth. The drive roller 3 is provided with multiple transmission teeth 30 spaced about its centerline at each end. Each plate 20 is provided with a plug-in block k1 at each end that matches the gap between two adjacent transmission teeth 30. As the drive roller 3 rotates, the multiple plug-in blocks k are sequentially inserted into the gaps, driving the flexible plate 21 to retract and expand. Guided by the curved guide surface, the plug-in blocks facilitate precise entry into the gaps during the rotation of the drive roller to transmit power, enhancing the smoothness of the second inner support body's extension or retraction, and improving the product's quality. The spacing between each pair of adjacent plates 20 is 1 to 1.2 times the width of the transmission teeth 30, ensuring that each plate 20 precisely fits into the gap between two adjacent transmission teeth 30.

[0046] Specifically, an arcuate guide surface is formed between each pair of adjacent drive teeth 30. Each insertion block k1 includes a block body k10 fixedly connected to the corresponding blade 20 and a column k11 disposed at the end of the block body k10. As the drive roller 3 rotates, the column k11 maintains contact with the arcuate guide surface, moving in or out of the gap. Simultaneously, the column k11 is inserted into and moves along the slideway k00.

[0047] In order to further facilitate implementation, the winding roller G is connected to the driving roller 3 in a transmission manner. As the rolling screen P moves in and out, the winding roller G and the driving roller 3 are rotated synchronously.

[0048] In some specific embodiments, the internal support structure also includes a transmission member 4 arranged between the winding roller G and the driving roller 3, and the transmission member 4 includes a first gear 41 and a second gear 42 respectively arranged at both ends of the winding roller G and the driving roller 3, and a third gear 43 meshing with the first gear 41 and the second gear 42; the driving roller 3 is connected to a driving motor, or two driving motors can be set, which are selected according to the actual torque required for the curling screen to be retracted and extended.

[0049] In addition, the internal support structure also includes a guide module 5 extending along the direction of expansion and contraction of the roll-up screen P and forming a guide groove c, and a rack 6 that bypasses the drive roller 3 and engages with the guide groove c, wherein one end of the rack 6 slides into the guide groove c and slides synchronously along the guide groove c as the drive roller 3 rotates to form a motion guide, and the other end bypasses the drive roller 3 and is located in the space between the guide module 5 and the second internal support body 2. It should be noted that when the internal support structure of this embodiment is applied to an electronic device, the winding roller G, the drive roller 3, and the guide module 5 are all fixedly mounted on the fixed base of the electronic device. It is clear that it can be implemented without further explanation here.

[0050] In summary, after adopting this internal support structure, first, the first internal support plane close to the moving end of the curling screen and fixed relatively to the moving end is formed by the first internal support body. Therefore, when the curling screen moves between the minimum display state and the maximum display state, the curling screen close to the moving end is always supported by the first internal support plane; secondly, when the winding roller rewinds the curling screen, the driving roller synchronously drives the second internal support body, so that the second internal support plane formed by the second internal support body is synchronously retracted to match the changes of the curling screen during retraction in real time, and the first internal support plane and the second internal support plane synchronously support the curling screen; finally, when the driving roller drives the winding roller to rotate to unfold the curling screen, the driving roller synchronously drives the second internal support body and the seat body, so that the second internal support plane formed by the second internal support body is synchronously extended to match the changes of the curling screen during retraction in real time, and the first internal support plane and the second internal support plane synchronously support the curling screen. Therefore, compared with the prior art, the present invention, on the one hand, through the cooperation of the first inner supporting body and the second inner supporting body, based on the first inner supporting plane maintaining the inner support for the curling screen, during the retraction and expansion of the curling screen, the second inner supporting plane can be synchronously extended or retracted to match the size of the curling screen in real time, and flexibly meet the inner support needs of the curling screen when it is retracted and expanded to any position; on the other hand, it ensures that during the extension or retraction process, the contact point between the second inner supporting plane and the curling screen is kept relatively still to achieve inner support, avoiding friction caused by relative movement, and improving the texture of the curling screen when it is retracted and expanded; thirdly, the flexible plate body forms a full-coverage inner support effect on the curling screen, and the curling screen is evenly stressed. Stable unfolding or retraction; fourthly, under the guidance of the arc-shaped guide surface, it is convenient for the plug-in block to accurately enter the gap during the rotation of the driving roller to implement transmission, and at the same time, it can improve the smoothness of the extension or retraction of the second inner support body and enhance the product texture; fifthly, the retraction and extension movement of the second inner support body and the curling screen are driven separately based on the same driving roller, which reduces the force on the surface of the curling screen, greatly improves the folding and extension texture of the curling screen, and enhances the user experience. In addition, the transmission response speed is fast, the transmission efficiency is high, and the operating power consumption of electronic equipment is effectively reduced; sixthly, through the cooperation of the rack and the guide module, a motion guide is formed during the extension or retraction of the second inner support body to ensure accurate and stable movement.

[0051] The above detailed description of the utility model is intended to enable people familiar with the technology in this field to understand the content of the utility model and implement it. It is not intended to limit the scope of protection of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the scope of protection of the utility model.

Claims

1. An internal support structure suitable for a roll-up screen, wherein one end of the roll-up screen is wound on a winding roller and the other end forms a movable end, wherein the roll-up screen is unfolded or retracted as the winding roller rotates, and the movable end moves back and forth accordingly, characterized in that: The internal support structure includes a first internal support body, a second internal support body, and a driving roller parallel to the winding roller, wherein the first internal support body is formed with a first internal support plane close to the moving end and fixed relative to the moving end; the second internal support body bypasses the driving roller and forms a second internal support plane located above and close to the winding roller, wherein the first internal support plane and the second internal support plane synchronously support the curling screen, and as the curling screen unfolds or retracts, the driving roller drives the second internal support body and drives the second internal support plane to extend or retract synchronously.

2. The inner support structure for a roll-up screen according to claim 1, characterized in that: The first inner supporting plane is arranged flush with the second inner supporting plane.

3. The inner support structure for a roll-up screen according to claim 1, characterized in that: The width of the second inner supporting plane is greater than or equal to the width of the curling screen.

4. The inner support structure for a roll-up screen according to claim 1, characterized in that: The extension or retraction speed of the second inner supporting plane is equal to the unfolding or retraction speed of the rolling screen.

5. The inner support structure for a roll-up screen according to any one of claims 1 to 4, characterized in that: The second inner support body includes a plurality of sheets extending axially along the driving roller and distributed side by side, and a flexible plate body covering the surface of the plurality of sheets and relatively fixed, wherein the second inner support plane is formed on the flexible plate body, and the driving roller drives the plurality of sheets to move along the direction of contraction and expansion of the curling screen, and the flexible plate body contracts and expands accordingly and synchronously forms inner support for the curling screen.

6. The inner support structure for a roll-up screen according to claim 5, characterized in that: Both ends of the driving roller are respectively provided with a plurality of transmission teeth spaced apart around its own center line direction. Both ends of each sheet are provided with plug-in blocks that match the gap between two adjacent transmission teeth. As the driving roller rotates, the plurality of plug-in blocks are sequentially inserted into the gap and drive the flexible plate body to retract and expand.

7. The inner support structure for a roll-up screen according to claim 6, characterized in that: An arc-shaped guide surface is formed between each two adjacent transmission teeth, and each of the plug-in blocks includes a block body fixedly connected to the corresponding sheet body and a column arranged at the end of the block body. As the driving roller rotates, the column maintains contact with the arc-shaped guide surface and enters or moves out of the gap.

8. The inner support structure for a roll-up screen according to claim 1, characterized in that: The winding roller is in transmission connection with the driving roller. As the curling screen moves to be folded and extended, the winding roller and the driving roller are rotated synchronously.

9. The inner support structure for a roll-up screen according to claim 8, characterized in that: The internal support structure also includes a transmission member arranged between the winding roller and the driving roller, and the transmission member includes a first gear and a second gear respectively arranged at both ends of the winding roller and the driving roller, and a third gear meshing with the first gear and the second gear; and / or, the driving roller is driven by at least one motor.

10. The inner support structure for a roll-up screen according to claim 1, characterized in that: The inner support structure also includes a guide module extending along the direction of the curling screen, and a rack that bypasses the driving roller and engages with it, wherein one end of the rack is slidably inserted into the guide module and slides synchronously along the guide module as the driving roller rotates.

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