Rolling structure of flexible screen and curl display device

Abstract

This application provides a winding structure and a rollable display device for a flexible screen, relating to the field of display technology. Its purpose is to at least alleviate the problem in related technologies where the rotating shaft is easily deformed, leading to wear between the rotating components and the rotating shaft. The winding structure includes a housing, multiple rotating components, and a rotating shaft; the multiple rotating components are spaced apart along the length of the housing and respectively connected to the housing; the rotating shaft is supported on the multiple rotating components and is used to support the flexible screen; wherein the rotating shaft includes multiple shaft segments spaced apart along the length of the housing.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a flexible screen roll-up structure and a roll-up display device. Background Technology

[0002] In related technologies, rollable display devices typically include a flexible screen and a winding structure for winding the flexible screen. The winding structure includes a pivot and a rotating component supporting the pivot. The pivot contacts the flexible screen and changes the sliding direction of the flexible screen.

[0003] For rollable display devices with larger dimensions, the shaft is usually quite long, which reduces its rigidity and makes it prone to deformation. This results in uneven stress on the rotating parts, which can easily lead to wear between the rotating parts and the shaft, affecting the service life of the rollable display device. Utility Model Content

[0004] This application provides a flexible screen roll-up structure and a roll-up display device to at least alleviate the problem in related technologies where the rotating shaft is easily deformed, leading to wear between the rotating parts and the rotating shaft.

[0005] On one hand, this application provides a flexible screen roll-up structure, which includes a housing, a plurality of rotating members and a rotating shaft; the plurality of rotating members are arranged at intervals along the length direction of the housing and are respectively connected to the housing; the rotating shaft is supported on the plurality of rotating members and is used to support the flexible screen; wherein, the rotating shaft includes a plurality of rotating shaft segments arranged at intervals along the length direction of the housing.

[0006] In some embodiments, the pivot includes a suspended region located between two adjacent pivot segments, wherein the pivot does not contact the flexible screen in the suspended region.

[0007] In some embodiments, the size of the suspended area in the length direction of the housing is less than or equal to 5 mm.

[0008] In some embodiments, the shaft further includes a connector connecting two adjacent shaft segments.

[0009] In some embodiments, at least two connectors are provided, and the plurality of rotating members respectively contact one of the corresponding connectors.

[0010] In some embodiments, two adjacent shaft segments are detachably connected via the connector.

[0011] In some embodiments, the connector includes a pin, and two adjacent shaft segments are respectively provided with pin holes. The two ends of the pin are respectively inserted into the corresponding pin holes to connect the two adjacent shaft segments.

[0012] In some embodiments, the plurality of rotating shaft segments have the same diameter.

[0013] In some embodiments, the dimension of each of the pivot segments is greater than or equal to 10 mm in the length direction of the housing.

[0014] On the other hand, this application also provides a rollable display device, which includes a flexible screen and a winding structure as described in any of the above embodiments, wherein the flexible screen is in contact with the rotating shaft.

[0015] The flexible screen winding structure provided in this application embodiment includes a rotating shaft comprising multiple spaced-apart shaft segments. This ensures that each shaft segment has high rigidity, preventing deformation due to its length and effectively mitigating wear between the rotating components and the shaft. Furthermore, since the shaft comprises multiple segments, maintenance can be achieved by replacing these segments, reducing maintenance costs. Additionally, each segment can be independently adjusted to accommodate the assembly precision of the corresponding rotating component, such as through dimensional adjustments to compensate for machining and assembly tolerances. This ensures that the shaft's support surface for the flexible screen is on the same plane, thereby improving the shaft's support performance for the flexible screen. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 It is a structural diagram based on the winding structure of flexible screens in related technologies; Figure 2 This is an exploded view of a winding structure of a flexible screen provided in some embodiments of this application; Figure 3 This is an assembly diagram of a winding structure for a flexible screen provided in some embodiments of this application; Figure 4 This is a schematic diagram of the structure of a rollable display device provided in some embodiments of this application. Detailed Implementation

[0018] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings. The described technical solutions are for illustrative purposes only and should not be construed as limiting the scope of protection of this application.

[0019] In the description of this application, it should be understood that the terms "length," "width," "thickness," "front," "back," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are only used to distinguish different technical features. The term "multiple" and similar words indicate two or more, unless otherwise expressly defined.

[0020] In this application, the descriptions of the various embodiments each have their own emphasis. Parts not described in detail in a particular embodiment can be found in the relevant descriptions of other embodiments. The embodiments, implementation methods, examples, and related technical features of this application can be combined and substituted for each other without conflict.

[0021] In related technologies, such as Figure 1 As shown, the winding structure of the flexible screen includes a pivot 10' and multiple support bearings 20' for supporting the pivot 10'. In rollable display devices with larger dimensions, the pivot 10' has a considerable length, typically reaching 510 mm, which reduces its rigidity and makes it prone to deformation. When the pivot 10' deforms, the support bearings 20' are easily subjected to uneven stress during the winding process, leading to wear between the rotating components and the pivot, thus affecting the service life of the rollable display device. Furthermore, due to machining and assembly tolerances, it is difficult to ensure that the support bearings 20' are at the same horizontal plane after installation, making it difficult to provide good and stable support for the pivot 10'.

[0022] Based on this, some embodiments of this application provide a winding structure for a flexible screen and a rollable display device including the winding structure of the flexible screen, so as to at least alleviate the problem in the related art that the rotating shaft is easily deformed, resulting in wear between the rotating parts and the rotating shaft.

[0023] like Figure 2 and Figure 3 As shown, the flexible screen's winding structure 100 includes a housing 10, a plurality of rotating members 20, and a rotating shaft 30. The plurality of rotating members 20 are arranged at intervals along the length X direction of the housing 10 and are respectively connected to the housing 10. The rotating shaft 30 is supported on the plurality of rotating members 20 and is used to support the flexible screen. The rotating shaft 30 includes a plurality of shaft segments 31 arranged at intervals along the length X direction of the housing 10.

[0024] The winding structure 100 provided in this embodiment includes a rotating shaft 30 comprising multiple spaced-apart shaft segments 31. This ensures that each shaft segment 31 has high rigidity, preventing deformation due to its long length and effectively mitigating wear between the rotating component 20 and the rotating shaft 30. Furthermore, since the rotating shaft 30 includes multiple shaft segments 31, maintenance of the rotating shaft 30 can be achieved by replacing the shaft segments 31, reducing maintenance costs. Additionally, each shaft segment 31 can be independently adjusted to accommodate the assembly precision of the corresponding rotating component 20, for example, through dimensional adjustments to compensate for machining and assembly tolerances. This ensures that the supporting surface of the rotating shaft 30 for the flexible screen is on the same plane, thereby improving the supporting performance of the rotating shaft 30 for the flexible screen.

[0025] The following description, in conjunction with specific embodiments, illustrates the winding structure and rollable display device of the flexible screen provided in this application.

[0026] Please continue reading. Figure 2 and Figure 3 Some embodiments of this application provide a flexible screen winding structure 100, which includes a housing 10, a plurality of rotating members 20 and a rotating shaft 30.

[0027] Multiple rotating components 20 are arranged at intervals along the length X of the housing 10 and are respectively connected to the support plate of the housing 10. The rotating components 20 can be, for example, support bearings, which are fixed to the support plate of the housing 10 and supported by the support plate. A rotating shaft 30 is supported on the multiple rotating components 20 and is used to support the flexible screen. Along the length X of the housing 10, the size of the rotating shaft 30 can be larger than the size of the flexible screen, thereby avoiding interference between the edge of the flexible screen and the winding structure 100 during the sliding process. Furthermore, both ends of the rotating shaft 30 can be fixed to the housing 10 by bearings, thereby fixing the rotating shaft 30 and ensuring that the rotating shaft 30 can rotate. The flexible screen contacts the rotating shaft 30, and the flexible screen can slide under drive, with the rotating shaft 30 enabling changes in the direction of movement of the flexible screen. During the sliding process of the flexible screen, relative rotation can occur between the rotating shaft 30 and the rotating components 20.

[0028] The rotating shaft 30 includes a plurality of rotating shaft segments 31 arranged at intervals along the length X of the housing 10. As an example, each rotating shaft segment 31 may be supported on one or more rotating members 20. For example, the rotating shaft segment 31 may be in direct contact with the rotating member 20 and be supported by the rotating member 20.

[0029] In this embodiment, since the rotating shaft 30 includes multiple spaced-apart shaft segments 31, each shaft segment 31 has high rigidity, preventing deformation due to its long length and effectively mitigating wear between the rotating component 20 and the rotating shaft 30. Furthermore, the multiple shaft segments 31 allow for easy maintenance of the rotating shaft 30 by replacing the segments, reducing maintenance costs of the winding structure 100. Additionally, each shaft segment 31 can be independently adjusted to suit the assembly precision of the corresponding rotating component 20, ensuring the supporting surface of the rotating shaft 30 for the flexible screen is on the same plane, thereby improving the support performance of the rotating shaft 30 for the flexible screen.

[0030] In some embodiments, please continue reading Figure 2 and Figure 3 The rotating shaft 30 includes a suspended area 301 located between two adjacent rotating shaft segments 31, and the rotating shaft 30 does not contact the flexible screen in the suspended area 301.

[0031] In this embodiment, the flexible screen comes into contact with the spaced-apart pivot segments 31 of the pivot 30, while the suspended area 301 does not participate in supporting the flexible screen. In this case, even if any pivot segment 31 undergoes a slight deformation due to the load, the deformation is unlikely to be smoothly transmitted to the adjacent pivot segment 31, thereby effectively ensuring the good support performance of the pivot 30 for the flexible screen.

[0032] In some embodiments, the dimension of the suspended region 301 in the longitudinal direction X of the housing 10 is less than or equal to 5 mm, that is, the length of the suspended region 301 is less than or equal to 5 mm. In this case, the gap between two adjacent rotating shaft segments 31 is less than or equal to 5 mm.

[0033] It is worth noting that if the length of the suspended area 301 is set too large, it can easily cause local collapse of the flexible screen, which in turn can cause the flexible screen to be partially embedded in the gap during the rolling process, resulting in wrinkles or scratches. In this embodiment, by setting the length of the suspended area 301 to within 5mm, the continuity of the support of the pivot 30 for the flexible screen can be effectively guaranteed.

[0034] In some examples, the suspended area 301 has a dimension greater than or equal to 2 mm in the length direction X of the housing 10. This arrangement facilitates the assembly between adjacent pivot sections 31.

[0035] For example, the size of the suspended area 301 in the length direction X of the housing 10 can be 2mm, 3mm, 4mm or 5mm, etc.

[0036] In some embodiments, the dimension of each pivot segment 31 in the longitudinal direction X of the housing 10 is greater than or equal to 10 mm. That is, the length of each pivot segment 31 is greater than or equal to 10 mm.

[0037] It is worth noting that in rollable display devices with larger dimensions, the length of the hinge 30 is typically over 500mm. When the length of the hinge segment 31 is less than 10mm, assembling multiple hinge segments 31 becomes cumbersome, making it difficult to effectively guarantee the assembly accuracy between the hinge segments 31. However, in this embodiment, since the length of each hinge segment 31 is greater than or equal to 10mm, the assembly accuracy of multiple hinge segments 31 can be improved, thus enhancing the support effect of multiple hinge segments 31 on the flexible screen.

[0038] In some examples, the length of each pivot segment 31 is less than or equal to 150 mm. This arrangement ensures that each pivot segment 31 has good rigidity and is not easily deformed, thus providing good and stable support for the flexible screen.

[0039] In some embodiments, please continue reading Figure 2 and Figure 3 The rotating shaft 30 also includes a connector 32 that connects two adjacent rotating shaft segments 31.

[0040] In this embodiment, the adjacent rotating shaft segments 31 are connected by the connector 32, which can effectively ensure the overall synchronous rotation of the rotating shaft 30, thereby facilitating the stable sliding of the flexible screen on the rotating shaft 30.

[0041] In some examples, multiple pivot segments 31 have the same diameter.

[0042] This configuration allows the surfaces of the multiple hinge segments 31 that are in contact with the flexible screen to fit against the back of the flexible screen, thereby improving the support performance of the hinge 30 for the flexible screen.

[0043] As an example, the central axis of connector 32 can coincide with the central axis of pivot segment 31. This ensures that there is no height difference between two adjacent pivot segments 31, thereby ensuring the stability of pivot 30 in supporting the flexible screen.

[0044] For example, both the connector 32 and the rotating shaft section 31 can be cylindrical, which can effectively ensure that the rotating shaft section 31 and the connector 32 achieve stable synchronous rotation.

[0045] It is worth noting that the radial dimension of the connector 32 is smaller than the outer diameter of the pivot section 31 to avoid contact between the connector 32 and the flexible screen.

[0046] In some examples, there are at least two connectors 32, with multiple rotating members 20 contacting a corresponding connector 32. For example, each connector 32 is supported on a corresponding rotating member 20.

[0047] This design avoids the rotating component 20 from contacting the working surface of the rotating shaft section 31, thus effectively preventing friction between the rotating shaft section 31 and the rotating component 20 and the resulting wear on the rotating shaft section 31. This, in turn, improves the support stability of the rotating shaft section 31 for the flexible screen. The working surface of the rotating shaft section 31 refers to the surface of the rotating shaft section 31 that contacts the flexible screen.

[0048] It is worth noting that when the connecting member 32 is supported by the rotating member 20, the rotating member 20 needs to be spaced apart from the rotating shaft section 31 located on both sides of the connecting member 32 in order to avoid mutual interference between the rotating member 20 and the rotating shaft section 31 during rotation.

[0049] For example, in the longitudinal direction X of the housing 10, the size of the support surface of the rotating member 20 for supporting the connecting member 32 can be between 1 mm and 2.6 mm, while the size of the suspended area 301 is between 2.7 mm and 5 mm. For instance, in the longitudinal direction X of the housing 10, the size of the support surface of the rotating member 20 for supporting the connecting member 32 is 2.6 mm, which allows for a relatively large contact surface between the rotating member 20 and the connecting member 32, thereby improving the support stability of the rotating member 20 for the rotating shaft 30. Furthermore, the size of the suspended area 301 can be 4 mm, which helps to reduce the impact of assembly errors of the rotating member 20 and the rotating shaft 30, ensuring that after the rotating member 20 and the rotating shaft 30 are assembled, they can rotate smoothly without interfering with each other.

[0050] In some examples, two adjacent shaft segments 31 are detachably connected by a connector 32.

[0051] This design facilitates the assembly of the shaft 30 and makes it easier to replace a damaged section of the shaft 31 or the connecting piece 32.

[0052] As an example, the connector 32 includes a pin, and two adjacent shaft segments 31 are respectively provided with pin holes. The two ends of the pin are respectively inserted into the corresponding pin holes 310 to connect the two adjacent shaft segments 31. For example, the pin and the pin hole can be connected by an interference fit.

[0053] With this configuration, the connection between the connector 32 and the rotating shaft section 31 can be achieved by inserting the shaft pin into the shaft pin hole of the rotating shaft section 31, thereby enabling the assembly of the rotating shaft 30.

[0054] Furthermore, the central axis of the pivot pin coincides with the central axis of the rotating shaft section 31 to ensure stable synchronous rotation between adjacent rotating shaft sections 31. The materials of the pivot pin and the rotating shaft section 31 can be the same or different, and can be adjusted as needed.

[0055] Some embodiments of this application also provide a rollable display device, such as... Figure 4 As shown, the rollable display device 1000 includes the roll-up structure 100 of the flexible screen described in any of the above embodiments.

[0056] Since it includes the winding structure 100, the rollable display device 1000 has the technical effects of the winding structure 100 described above, which will not be repeated here.

[0057] In some examples, the rollable display device 1000 also includes a flexible screen 200, which contacts the pivot 30 of the winding structure 100. The flexible screen 200 is supported on the pivot 30 and changes its winding direction via the pivot 30. Please continue reading. Figure 4 The flexible screen 200 can be rolled up under drive. Since the rotating shaft 30 changes the sliding direction of the flexible screen 200, it can be smoothly rolled up to the back of the housing 10.

[0058] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A winding structure for a flexible screen, characterized in that, include: case; as well as Multiple rotating components are arranged at intervals along the length of the housing and are respectively connected to the housing; A pivot shaft, supported on the plurality of rotating components, is used to support the flexible screen; wherein the pivot shaft comprises a plurality of pivot shaft segments spaced apart along the length direction of the housing.

2. The winding structure according to claim 1, characterized in that, The rotating shaft includes a suspended area located between two adjacent rotating shaft segments, and the rotating shaft does not contact the flexible screen in the suspended area.

3. The winding structure according to claim 2, characterized in that, The size of the suspended area in the length direction of the shell is less than or equal to 5 mm.

4. The winding structure according to any one of claims 1-3, characterized in that, The shaft also includes a connector that connects two adjacent shaft segments.

5. The winding structure according to claim 4, characterized in that, The connector is provided in at least two parts, and the plurality of rotating parts respectively contact one of the corresponding connectors.

6. The winding structure according to claim 4, characterized in that, The two adjacent rotating shaft segments are detachably connected by the connector.

7. The winding structure according to claim 6, characterized in that, The connector includes a pin, and each of the two adjacent shaft segments has a pin hole. The two ends of the pin are inserted into the corresponding pin holes to connect the two adjacent shaft segments.

8. The winding structure according to claim 4, characterized in that, The diameters of the multiple rotating shaft segments are the same.

9. The winding structure according to any one of claims 1-3, characterized in that, Along the length of the housing, the dimension of each of the pivot segments is greater than or equal to 10 mm.

10. A rollable display device, characterized in that, include: The flexible screen and the winding structure as described in any one of claims 1-9, wherein the flexible screen is supported on the rotating shaft.

Images