Slide scroll assembly and slide scroll display device

Abstract

The present application relates to a scroll assembly and a scroll display device. The scroll assembly includes: a support frame, the support frame has a rotation axis; two first rotation axes arranged in parallel to each other, the first rotation axes are rotatably arranged on the support frame, the two first rotation axes are located on both sides of the rotation axis and are equidistant from the rotation axis; and at least one second rotation axis and at least one third rotation axis, the second rotation axis and the third rotation axis are parallel to the first rotation axis; wherein the support frame is divided into a first section and a second section by a first virtual plane determined by the central axes of the two first rotation axes as a boundary, the second rotation axis is rotatably arranged on the first section, the third rotation axis is rotatably arranged on the second section, the first rotation axis, the second rotation axis and the third rotation axis are arranged around the rotation axis, the distance from the second rotation axis to the rotation axis is equal to the distance from the first rotation axis to the rotation axis, and the distance from the third rotation axis to the rotation axis is less than the distance from the first rotation axis to the rotation axis.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a scroll assembly and a scroll display device. Background Art

[0002] Compared with traditional displays, flexible displays have the advantages of being bendable, flexible, and lightweight, and are currently receiving widespread attention. As a new form of display device, the roll-up display device can significantly reduce the size of the product while expanding the display area of ​​the screen, so that the product can not only meet the user experience of a large screen and a wide field of view, but also have good portability.

[0003] In the scrolling display device of the related art, the flexible display screen can be unfolded or retracted as the scrolling shaft moves horizontally. In the unfolding process of the flexible display screen, the part where the flexible display screen contacts the scrolling shaft will bulge, especially when the flexible display screen is fully unfolded, the bulge is most obvious. The local bulge of the flexible display screen makes the end close to the scrolling shaft slightly higher and the end away from the scrolling shaft slightly lower, so that the display surface of the flexible display screen seen by the user is not flat, affecting the user experience. Summary of the invention

[0004] Based on this, it is necessary to provide a scroll assembly and a scroll display device, aiming to improve the problem of poor flatness of the display surface after the flexible display screen is unfolded.

[0005] According to one aspect of the present application, a sliding reel assembly is provided, the sliding reel assembly comprising:

[0006] a support frame having an axis of rotation;

[0007] two first rotating shafts arranged parallel to each other, the first rotating shafts being rotatably arranged on the supporting frame, the two first rotating shafts being located on both sides of the rotating axis and being equidistant from the rotating axis; and

[0008] at least one second rotating axis and at least one third rotating axis, wherein the second rotating axis and the third rotating axis are parallel to the first rotating axis;

[0009] In which, the support frame is divided into a first section and a second section by a first virtual plane determined by the central axes of the two first rotating shafts, the second rotating shaft is rotatably arranged in the first section, the third rotating shaft is rotatably arranged in the second section, the first rotating shaft, the second rotating shaft and the third rotating shaft are arranged around the rotation axis, the distance from the second rotating shaft to the rotation axis is equal to the distance from the first rotating shaft to the rotation axis, and the distance from the third rotating shaft to the rotation axis is smaller than the distance from the first rotating shaft to the rotation axis.

[0010] The sliding scroll assembly of the embodiment of the present application can be used for a sliding scroll display device. It is understood that the sliding scroll display device includes a flexible display screen, which is wound around the sliding scroll assembly, and one end of the flexible display screen is a fixed end. The sliding scroll assembly can move relative to the fixed end of the flexible display screen in a first direction to drive the flexible display screen to unfold or rewind. The first direction can also be understood as the direction in which the flexible display screen unfolds. The sliding scroll assembly can be configured to be able to switch between a first state and a second state. Wherein, when the sliding scroll assembly is in the first state, the first rotating shaft or the second rotating shaft can be in a tangential contact position with the exposed part of the flexible display screen, and when the sliding scroll assembly is in the second state, the third rotating shaft can be in a tangential contact position with the exposed part of the flexible display screen. In the process of the flexible display screen gradually unfolding from the retracted state, the sliding scroll assembly can be in the first state, and when the flexible display screen is close to the final state of unfolding (i.e., the fully unfolded state), the sliding scroll assembly can be switched to the second state, and the sliding scroll assembly remains in the second state when the flexible display screen is in the final state of unfolding. Although in the final state of the flexible display screen, an obvious bulge will appear at the part where the flexible display screen contacts the sliding scroll assembly, at the same time, the sliding scroll assembly is in the second state. At this time, the bulge at the part of the flexible display screen is the position in contact with the third rotating shaft. Since the distance from the third rotating shaft to the rotation axis of the supporting frame is smaller than the distance from the first rotating shaft to the rotation axis, after the sliding scroll assembly switches from the first state to the second state, this is equivalent to moving the bulge at the part of the flexible display screen a certain distance in the opposite direction of the bulge. As a result, the phenomenon that one end of the flexible display screen is higher than the other end caused by the bulge can be improved, thereby improving the flatness of the display surface of the flexible display screen, thereby improving the user experience of the sliding scroll display device.

[0011] In some embodiments, the first rotating shaft, the second rotating shaft and the third rotating shaft are arranged around the rotation axis, and the first rotating shaft, the second rotating shaft and the third rotating shaft jointly define an outer contour of the sliding reel assembly that is an irregular circle;

[0012] When there is one second rotating shaft, the angular interval between the second rotating shaft and the first rotating shaft is 90°;

[0013] When there are multiple second rotating shafts, the multiple second rotating shafts and the two first rotating shafts are distributed at equal angles.

[0014] In some embodiments, the first rotating shaft, the second rotating shaft and the third rotating shaft are arranged around the rotation axis, and the first rotating shaft, the second rotating shaft and the third rotating shaft jointly define an outer contour of the sliding reel assembly that is an irregular circle;

[0015] When there is one third rotation axis, the central axis of the third rotation axis and the second virtual plane determined by the rotation axis are perpendicular to the first virtual plane;

[0016] When there are multiple third rotating shafts, the multiple third rotating shafts are distributed at equal angles.

[0017] In some embodiments, the number of the second rotating shafts is three or more, and / or the number of the third rotating shafts is three or more.

[0018] In some embodiments, the sliding scroll assembly also includes a fourth rotating shaft arranged between the third rotating shaft and the first rotating shaft, the fourth rotating shaft is parallel to the first rotating shaft, and the distance from the fourth rotating shaft to the rotation axis is greater than the distance from the third rotating shaft to the rotation axis, and less than the distance from the first rotating shaft to the rotation axis.

[0019] In some embodiments, the support frame comprises:

[0020] a central shaft, the central axis of which coincides with the rotation axis; and

[0021] Two end frames are provided at two ends of the central axis, and the first rotating shaft, the second rotating shaft and the third rotating shaft are all rotatably connected to the end frames.

[0022] In some embodiments, the end frame includes an annular frame and a plurality of arms, the arms connecting the central axis and the annular frame, and the first rotating shaft, the second rotating shaft and the third rotating shaft are all rotatably connected to the annular frame.

[0023] In some embodiments, the first rotating shaft, the second rotating shaft and the third rotating shaft are all hollow shafts.

[0024] According to another aspect of the present application, a scrolling display device is provided, wherein the scrolling display device comprises the scrolling shaft assembly in any one of the above embodiments.

[0025] In some embodiments, the scroll display device further includes:

[0026] Main frame;

[0027] A flexible display screen, wherein a first end of the flexible display screen is connected to the main frame, the flexible display screen is wound around the sliding scroll assembly, and the sliding scroll assembly is configured to be able to move along a first direction relative to the main frame to drive the flexible display screen to unfold or retract; and

[0028] A driving member connected to a support frame of the sliding reel assembly;

[0029] Wherein, the driving member is used to switch the sliding scroll assembly between a first state and a second state, when the sliding scroll assembly is in the first state, the first virtual plane is perpendicular to the first direction; when the sliding scroll assembly is in the second state, the first virtual plane is parallel to the first direction and the third rotating axis is close to the display side of the sliding scroll display device; when the flexible display screen is in the rolled-up state, the sliding scroll assembly is in the first state, and when the flexible display screen is in the unfolded final state, the sliding scroll assembly is in the second state.

[0030] In some embodiments, the sliding display device further includes a pulling component, wherein the pulling component is connected to the second end of the flexible display screen to provide a pulling force to tension the flexible display screen.

[0031] In some embodiments, the pulling assembly includes a motor and a transmission component connected to the motor, and the transmission component is connected to the second end of the flexible display screen.

[0032] In some embodiments, the pulling component includes at least one spring connected to the second end of the flexible display screen.

[0033] In some embodiments, the sliding display device also includes a frame, the supporting frame is connected to the frame in a manner that can rotate around the rotation axis, the frame is configured to be movable in a first direction relative to the main frame, and the driving member is disposed on the frame.

[0034] In some embodiments, the driving member is a motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of a sliding display device in the related art when it is in a rolled-up state;

[0036] Figure 2 It is a structural schematic diagram of a sliding display device in the related art when it is in an unfolded state;

[0037] Figure 3 It is a structural schematic diagram of a sliding scroll assembly in an embodiment of the present application;

[0038] Figure 4 It is a front view schematic diagram of a sliding scroll assembly in one embodiment of the present application;

[0039] Figure 5 It is a structural schematic diagram of the sliding display device in one embodiment of the present application when it is in a rolled-up state;

[0040] Figure 6 Schematic diagram of the structure of the scrolling display device in one embodiment of the present application when it is in an unfolded state. DETAILED DESCRIPTION

[0041] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0043] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or there can be intervening elements. Further, when a layer is referred to as being "under" another layer, it can be directly below or there can be one or more light-emitting units. It is also understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or there can be one or more light-emitting units.

[0044] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0045] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present application.

[0046] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" can mean within one or more standard deviations, which are not limited here.

[0047] Furthermore, in the specification, the phrase “planar distribution schematic diagram” refers to a drawing when a target portion is viewed from above, and the phrase “cross-sectional schematic diagram” refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.

[0048] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0049] Compared with traditional displays, flexible displays have the advantages of being bendable, flexible, and lightweight, and are currently receiving widespread attention. As a new form of display device, the roll-up display device can significantly reduce the size of the product while expanding the display area of ​​the screen, so that the product can not only meet the user experience of a large screen and a wide field of view, but also have good portability.

[0050] like Figure 1 , Figure 2 As shown, in the sliding display device in the related art, one end of the flexible display screen 2 is the fixed end 3, the flexible display screen 2 is wound around the sliding scroll 1, and the sliding scroll 1 can move relative to the fixed end 3 of the flexible display screen 2. With the movement of the sliding scroll 1, the flexible display screen 2 can be unfolded or rolled up. In the process of unfolding the flexible display screen 2, the part where the flexible display screen 2 contacts the sliding scroll 1 (equivalent to the part of the flexible display screen 2 to be revealed) will bulge, especially when the flexible display screen is in the unfolded state (fully unfolded state), the bulge is most obvious. The local bulge of the flexible display screen 2 makes the end close to the sliding scroll slightly higher, while the end away from the sliding scroll is slightly lower, so that the display surface flatness of the flexible display screen seen by the user is not good, affecting the user experience.

[0051] In view of the above problems, the embodiment of the first aspect of the present application proposes a sliding scroll assembly 100, which aims to improve the problem of poor flatness of the display surface of the flexible display screen 300 after it is unfolded.

[0052] like Figure 3 , Figure 4As shown, the sliding reel assembly 100 in the embodiment of the first aspect of the present application includes a support frame 110, two first rotating shafts 120, at least one second rotating shaft 130 and at least one third rotating shaft 140. Specifically, the two first rotating shafts 120 are arranged parallel to each other, the support frame 110 has a rotation axis, the first rotating shaft 120 is rotatably arranged on the support frame 110, and the two first rotating shafts 120 are located on both sides of the rotation axis and are equidistant from the rotation axis. The second rotating shaft 130 and the third rotating shaft 140 are arranged parallel to the first rotating shaft 120. Among them, the support frame 110 is divided into a first section 110a and a second section 110b by a first virtual plane A determined by the central axes of the two first rotating shafts 120. The second rotating shaft 130 is rotatably arranged in the first section 110a, and the third rotating shaft 140 is rotatably arranged in the second section 110b. The first rotating shaft 120, the second rotating shaft 130 and the third rotating shaft 140 are arranged around the rotation axis, and the distance from the second rotating shaft 130 to the rotation axis is equal to the distance from the first rotating shaft 120 to the rotation axis, and the distance from the third rotating shaft 140 to the rotation axis is less than the distance from the first rotating shaft 120 to the rotation axis.

[0053] The scroll assembly 100 of the embodiment of the present application can be used in the scroll display device 10 (refer to Figure 5 and Figure 6 ). It can be understood that the scroll display device 10 includes a flexible display screen 300, which is wound around the scroll assembly 100, and one end of the flexible display screen 300 is a fixed end. The scroll assembly 100 can move along a first direction relative to the fixed end of the flexible display screen 300 to drive the flexible display screen 300 to unfold or reel in. The first direction can also be understood as the direction in which the flexible display screen 300 unfolds. The scroll assembly 100 can be configured to be able to switch between a first state and a second state. When the scroll assembly 100 is in the first state, the first rotating shaft 120 or the second rotating shaft 130 can be in a tangential contact position with the exposed portion of the flexible display screen 300 (please refer to Figure 5 ), when the sliding scroll assembly 100 is in the second state, the third rotating shaft 140 can be in a tangential contact position with the exposed portion of the flexible display screen 300 (please refer to Figure 6). During the process of the flexible display screen 300 gradually unfolding from the rolled-up state, the sliding scroll assembly 100 can be in the first state, and when the flexible display screen 300 is close to the final unfolded state (i.e., the fully unfolded state), the sliding scroll assembly 100 can be switched to the second state, and the sliding scroll assembly 100 remains in the second state when the flexible display screen 300 is in the final unfolded state. Although in the final state of the flexible display screen 300 being unfolded, an obvious bulge will appear at the part where the flexible display screen 300 contacts the sliding scroll assembly 100, at the same time, the sliding scroll assembly 100 is in the second state. At this time, the bulge of the flexible display screen 300 is the position in contact with the third shaft 140. Since the distance from the third shaft 140 to the rotation axis of the supporting frame 110 is smaller than the distance from the first shaft 120 to the rotation axis, after the sliding scroll assembly 100 switches from the first state to the second state, this is equivalent to moving the bulge of the flexible display screen 300 a certain distance in the opposite direction of the bulge. As a result, the phenomenon that one end of the flexible display screen 300 is higher and the other end is lower caused by the bulge can be improved, thereby improving the flatness of the display surface of the flexible display screen 300, so as to enhance the user experience of the sliding display device 10.

[0054] It is understandable that the process of converting the flexible display screen 300 from the fully unfolded state to the rolled-up state may be the opposite of the unfolding process. That is, the sliding scroll assembly 100 is first in the second state, the sliding scroll assembly 100 moves along the first direction to approach the fixed end of the flexible display screen 300, and drives the flexible display screen 300 to gradually roll up. After the sliding scroll assembly 100 moves a certain distance, it may switch to the first state and maintain the first state until the flexible display screen 300 is completely rolled up.

[0055] In some embodiments, Figure 4 As shown, the first rotating shaft 120, the second rotating shaft 130 and the third rotating shaft 140 are arranged around the rotation axis, and the first rotating shaft 120, the second rotating shaft 130 and the third rotating shaft 140 jointly define an irregular circular outer contour of the sliding reel assembly 100. When there is one second rotating shaft 130, the angular interval between the second rotating shaft 130 and the first rotating shaft 120 is 90°, and when there are multiple second rotating shafts 130, the multiple second rotating shafts 130 and the two first rotating shafts 120 are distributed at equal angular intervals.

[0056] It can be understood that the first rotating shaft 120, the second rotating shaft 130 and the third rotating shaft 140 jointly define the outer contour of the sliding scroll assembly 100 which is an irregular circle, that is, the outer contour of the sliding scroll assembly 100 may have different curvatures at different positions, but the change of curvature is relatively gentle. The number of the second rotating shaft 130 can be one or more. When the number of the second rotating shaft 130 is one, the angular interval between the second rotating shaft 130 and the first rotating shaft 120 is 90°. When the number of the second rotating shaft 130 is more than one, the multiple second rotating shafts 130 and the two first rotating shafts 120 are distributed at equal angles. With this arrangement, when the flexible display screen 300 is supported on the first rotating shaft 120 and the second rotating shaft 130, it is beneficial to improve the force uniformity of the flexible display screen 300.

[0057] In some embodiments, the first rotating shaft 120, the second rotating shaft 130 and the third rotating shaft 140 are arranged around the rotation axis, and the first rotating shaft 120, the second rotating shaft 130 and the third rotating shaft 140 jointly define an irregular circular outer contour of the sliding reel assembly 100. When there is one third rotating shaft 140, the central axis of the third rotating shaft 140 and the second virtual plane B defined by the rotation axis are perpendicular to the first virtual plane A, and when there are multiple third rotating shafts 140, the multiple third rotating shafts 140 are distributed at equal angles.

[0058] It is understandable that the first rotating shaft 120, the second rotating shaft 130 and the third rotating shaft 140 jointly define the outer contour of the sliding scroll assembly 100 which is an irregular circle, that is, different positions of the outer contour of the sliding scroll assembly 100 may have different curvatures, but the change of the curvature is relatively gentle. The number of the third rotating shaft 140 may be one or more. When the number of the third rotating shaft 140 is one, the second virtual plane B determined by the central axis of the third rotating shaft 140 and the rotation axis is perpendicular to the first virtual plane A, that is, the third rotating shaft 140 is in the middle position of the two first rotating shafts 120. When the number of the third rotating shaft 140 is multiple, the distances from each third rotating shaft 140 to the rotation axis are equal, and the multiple third rotating shafts 140 are distributed at equal angles. In this way, when the flexible display screen 300 is supported on the third rotating shaft 140, it is beneficial to improve the uniformity of the force of the flexible display screen 300.

[0059] In some embodiments, the number of the second rotating shafts 130 is three or more. It is understandable that the more the number of the second rotating shafts 130 is, the larger the contact area between the flexible display screen 300 and the second rotating shafts 130 is, so that the flexible display screen 300 has fewer suspended parts when supported by the first rotating shaft 120 and the second rotating shaft 130, and the force uniformity of the flexible display screen 300 is also better. In order to make the flexible display screen 300 obtain better force uniformity, the number of the second rotating shafts 130 is preferably three or more.

[0060] In some embodiments, the number of the third rotating shafts 140 is three or more. It is understandable that the more the number of the third rotating shafts 140 is, the larger the contact area between the flexible display screen 300 and the third rotating shafts 140 is, thereby making the flexible display screen 300 less suspended when supported on the third rotating shafts 140, so that the force uniformity of the flexible display screen 300 is better. Therefore, in order to make the flexible display screen 300 obtain better force uniformity when supported on the third rotating shafts 140, the number of the third rotating shafts 140 is preferably three or more.

[0061] In some embodiments, the sliding scroll assembly 100 further includes a fourth rotating shaft (not shown) disposed between the third rotating shaft 140 and the first rotating shaft 120, the fourth rotating shaft is parallel to the first rotating shaft 120, the distance from the fourth rotating shaft to the rotation axis is greater than the distance from the third rotating shaft 140 to the rotation axis, and is less than the distance from the first rotating shaft 120 to the rotation axis. In this embodiment, the fourth rotating shaft is disposed between the third rotating shaft 140 and the first rotating shaft 120, the distance from the fourth rotating shaft to the rotation axis of the support frame 110 is greater than the distance from the third rotating shaft 140 to the rotation axis, and is less than the distance from the first rotating shaft 120 to the rotation axis, thereby, through the transition effect of the fourth rotating shaft, the outer contour of the sliding scroll assembly 100 changes more smoothly. In this way, when the sliding scroll assembly 100 switches between the first state and the second state, the change in the stress condition of the flexible display screen 300 will also be more moderate, which is conducive to improving the service life of the flexible display screen 300.

[0062] In some embodiments, Figure 3 , Figure 4 As shown, the support frame 110 includes a central axis 111 and two end frames 112, wherein the central axis of the central axis 111 coincides with the rotation axis of the support frame 110, the two end frames 112 are arranged at both ends of the central axis 111, and the first rotation axis 120, the second rotation axis 130 and the third rotation axis 140 are all rotatably connected to the end frames 112. The central axis 111 of the support frame 110 is used to connect with the driving member in the scroll display device 10, so that the support frame 110 can rotate around the rotation axis under the driving action of the driving member, thereby changing the posture of the scroll assembly 100 in the scroll display device 10, so that the scroll assembly 100 is switched between the first state and the second state.

[0063] In some embodiments, the end frame 112 includes an annular frame 1121 and a plurality of arms 1122, wherein the arms 1122 connect the central axis 111 and the annular frame 1121, and the first rotating shaft 120, the second rotating shaft 130 and the third rotating shaft 140 are all rotatably connected to the annular frame 1121. Among them, the annular frame 1121 has the advantage of being light in weight due to its hollowed-out middle portion. The central axis 111 and the annular frame 1121 are connected by the arms 1122, and a hollowed-out area is also formed between adjacent arms 1122. It can be seen that in this embodiment, the end frame 112 adopts a structural mode of combining the annular frame 1121 and the arms 1122, which is conducive to reducing the weight of the end frame 112, and further conducive to reducing the overall weight of the sliding reel assembly 100.

[0064] In some embodiments, the first rotating shaft 120 , the second rotating shaft 130 and the third rotating shaft 140 are all hollow shafts, thereby making the first rotating shaft 120 , the second rotating shaft 130 and the third rotating shaft 140 lighter, thereby facilitating reducing the overall weight of the sliding reel assembly 100 .

[0065] The first embodiment of the present application provides a scrolling display device 10, including the scroll assembly 100 in any of the above embodiments. The scrolling display device 10 can be, for example, a display, a television, a digital camera, a mobile phone, a tablet computer, a navigator, or any other product or component with a display function.

[0066] In some embodiments, Figure 5 , Figure 6 As shown, the scroll display device 10 also includes a main frame 200, a flexible display screen 300 and a driving member (not shown in the figure). Specifically, the first end of the flexible display screen 300 is connected to the main frame 200, and the flexible display screen 300 is wound around the scroll assembly 100, and the scroll assembly 100 is configured to be able to move along a first direction relative to the main frame 200 to drive the flexible display screen 300 to unfold or rewind. The driving member is connected to the support frame 110 of the scroll assembly 100, and the driving member is used to switch the scroll assembly 100 between the first state and the second state. When the scroll assembly 100 is in the first state, the first virtual plane A is perpendicular to the first direction. When the scroll assembly 100 is in the second state, the first virtual plane A is parallel to the first direction and the third rotating shaft 140 is close to the display side of the scroll display device 10. Wherein, when the flexible display screen 300 is in the rewinding state, the scroll assembly 100 is in the first state, and when the flexible display screen 300 is in the final state of unfolding, the scroll assembly 100 is in the second state.

[0067] In this embodiment, when the flexible display screen 300 is in the rolled-up state, the sliding scroll assembly 100 is in the first state, and when the flexible display screen 300 is in the unfolded final state, the sliding scroll assembly 100 is in the second state. Therefore, when the flexible display screen 300 of the rolling display device 10 is in the final state of unfolding, although the part where the flexible display screen 300 contacts the sliding scroll assembly 100 will have an obvious bulge, at this time, the sliding scroll assembly 100 is in the second state. At this time, the part where the flexible display screen 300 appears bulging is the position in contact with the third rotating shaft 140. Since the distance from the third rotating shaft 140 to the rotation axis of the supporting frame 110 is smaller than the distance from the first rotating shaft 120 to the rotation axis, after the sliding scroll assembly 100 switches from the first state to the second state, this is equivalent to moving the part where the bulge of the flexible display screen 300 appears a little distance in the opposite direction of the bulge. Therefore, the phenomenon that one end of the flexible display screen 300 is high and the other end is low caused by the bulge can be improved, thereby improving the flatness of the display surface of the flexible display screen 300, so as to enhance the user experience of the rolling display device 10.

[0068] In some embodiments, the rolling display device 10 further includes a pulling component 400, which is connected to the second end of the flexible display screen 300 to provide a pulling force to tighten the flexible display screen 300. In this embodiment, the pulling component 400 provides a pulling force to the second end of the flexible display screen 300, and under the action of the pulling force, the flexible display screen 300 can remain generally flat and avoid wrinkles whether it is converted from a rolled state to an unfolded state or from an unfolded state to a rolled state.

[0069] In some embodiments, the pulling assembly 400 may include a motor and a transmission component connected to the motor, and the transmission component is connected to the second end of the flexible display screen 300. In this embodiment, a stable pulling force can be provided to the second end of the flexible display screen 300 through the motor and the transmission component.

[0070] In some other embodiments, the pulling assembly 400 includes at least one spring connected to the second end of the flexible display screen 300. In this embodiment, a low-cost spring is used to provide a pulling force to the second end of the flexible display screen 300, which is beneficial to reducing the manufacturing cost of the scrolling display device 10.

[0071] In some embodiments, the scrolling display device 10 further includes a frame 500, the support frame 110 is connected to the frame 500 in a manner that it can rotate around a rotation axis, the frame 500 is configured to be movable along a first direction relative to the main frame 200, and the driving member is disposed on the frame 500. In this embodiment, the frame 500 can move along a first direction relative to the main frame 200, thereby driving the scroll assembly 100 to move along the first direction through the frame 500, so as to facilitate the scroll assembly 100 to move away from or close to the main frame 200, thereby driving the flexible display screen 300 to unfold or retract.

[0072] Furthermore, the driving member is, for example, a motor, and the rotating shaft of the motor is connected to the support frame 110 , so that the support frame 110 is controlled to rotate by the motor, so that the sliding reel assembly 100 is switched between the first state and the second state.

[0073] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A sliding reel assembly, characterized in that: include: a support frame having an axis of rotation; Two first rotating shafts are arranged parallel to each other, the first rotating shafts are rotatably arranged on the supporting frame, and the two first rotating shafts are located on both sides of the rotating axis and are equidistant from the rotating axis; as well as at least one second rotating axis and at least one third rotating axis, wherein the second rotating axis and the third rotating axis are parallel to the first rotating axis; The support frame is divided into a first section and a second section with a first virtual plane defined by the central axes of the two first rotating shafts as a boundary, the second rotating shaft is rotatably arranged in the first section, the third rotating shaft is rotatably arranged in the second section, the first rotating shaft, the second rotating shaft and the third rotating shaft are arranged around the rotation axis, the distance from the second rotating shaft to the rotation axis is equal to the distance from the first rotating shaft to the rotation axis, and the distance from the third rotating shaft to the rotation axis is less than the distance from the first rotating shaft to the rotation axis; The first rotating shaft, the second rotating shaft and the third rotating shaft are arranged around the rotation axis, and the first rotating shaft, the second rotating shaft and the third rotating shaft jointly define an outer contour of the sliding reel assembly that is an irregular circle.

2. The sliding reel assembly according to claim 1, characterized in that: When there is one second rotating shaft, the angular interval between the second rotating shaft and the first rotating shaft is 90°; When there are multiple second rotating shafts, the multiple second rotating shafts and the two first rotating shafts are distributed at equal angles.

3. The sliding reel assembly according to claim 1, characterized in that: When there is one third rotation axis, the central axis of the third rotation axis and the second virtual plane determined by the rotation axis are perpendicular to the first virtual plane; When there are multiple third rotating shafts, the multiple third rotating shafts are distributed at equal angles.

4. The sliding reel assembly according to claim 1, characterized in that: The number of the second rotating shafts is three or more, and / or the number of the third rotating shafts is three or more.

5. The sliding reel assembly according to claim 1, characterized in that: The sliding scroll assembly also includes a fourth rotating shaft arranged between the third rotating shaft and the first rotating shaft, the fourth rotating shaft is parallel to the first rotating shaft, and the distance from the fourth rotating shaft to the rotation axis is greater than the distance from the third rotating shaft to the rotation axis, and is less than the distance from the first rotating shaft to the rotation axis.

6. The sliding reel assembly according to claim 1, characterized in that: The support frame comprises: a central shaft, the central axis of which coincides with the rotation axis; and Two end frames are provided at two ends of the central axis, and the first rotating shaft, the second rotating shaft and the third rotating shaft are all rotatably connected to the end frames.

7. The sliding reel assembly according to claim 6, characterized in that: The end frame body includes an annular frame and a plurality of supporting arms, wherein the supporting arms connect the central axis and the annular frame, and the first rotating shaft, the second rotating shaft and the third rotating shaft are all rotatably connected to the annular frame.

8. The sliding reel assembly according to claim 1, characterized in that: The first rotating shaft, the second rotating shaft and the third rotating shaft are all hollow shafts.

9. A scroll display device, characterized in that: Comprising a sliding reel assembly as claimed in any one of claims 1 to 8.

10. The scroll display device according to claim 9, characterized in that: The scroll display device further comprises: Main frame; A flexible display screen, wherein a first end of the flexible display screen is connected to the main frame, the flexible display screen is wound around the sliding scroll assembly, and the sliding scroll assembly is configured to be able to move along a first direction relative to the main frame to drive the flexible display screen to unfold or retract; and A driving member connected to a support frame of the sliding reel assembly; Wherein, the driving member is used to switch the sliding scroll assembly between a first state and a second state, when the sliding scroll assembly is in the first state, the first virtual plane is perpendicular to the first direction; when the sliding scroll assembly is in the second state, the first virtual plane is parallel to the first direction and the third rotating axis is close to the display side of the sliding scroll display device; when the flexible display screen is in the rolled-up state, the sliding scroll assembly is in the first state, and when the flexible display screen is in the unfolded final state, the sliding scroll assembly is in the second state.

11. The scroll display device according to claim 10, characterized in that: The sliding display device further includes a pulling component, which is connected to the second end of the flexible display screen to provide a pulling force to tighten the flexible display screen.

12. The scroll display device according to claim 11, characterized in that: The pulling assembly includes a motor and a transmission component connected to the motor, and the transmission component is connected to the second end of the flexible display screen.

13. The scroll display device according to claim 11, characterized in that: The pulling assembly includes at least one spring connected to the second end of the flexible display screen.

14. The scroll display device according to claim 10, characterized in that: The scrolling display device further comprises a frame, the supporting frame is connected to the frame in a manner of being rotatable about the rotation axis, the frame is configured to be movable along a first direction relative to the main frame, and the driving member is disposed on the frame.

15. The scroll display device according to claim 14, characterized in that: The driving member is a motor.

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