Display device and telescopic mechanism for it

Abstract

Embodiments of the present disclosure provide a display device and a telescopic mechanism therefor and belong to the field of display technologies. The telescopic mechanism comprises a fixed part, a movable part, and a telescopic assembly, wherein the telescopic assembly comprises m foldable telescopic frames and m-1 compensating connecting rod assemblies; two ends of the foldable telescopic frame are connected to the fixed part and the movable part, respectively; the m foldable telescopic frames are arranged at intervals in a first direction, and the first direction is perpendicular to a telescopic direction of the telescopic assembly; and each compensating connecting rod assembly is arranged between two adjacent foldable telescopic frames, each compensating connecting rod assembly comprises at least one compensating connecting rod, and two ends of each compensating connecting rod are each connected to the two adjacent foldable telescopic frames.

Description

AREA OF TECHNOLOGY

[0001] Embodiments of the present disclosure relate to the field of display technologies and in particular to a display device and a telescopic mechanism therefor. STATE OF THE ART

[0002] Display devices are becoming increasingly common and have become one of the most important tools in people's daily lives and at work. Sliding roller displays are very popular due to their high portability and large display area.

[0003] Currently, the sliding-roller display device comprises a flexible display screen and a telescopic mechanism that supports the flexible display screen. The telescopic mechanism includes a fixed part, a moving part, and a telescopic assembly. The fixed part and the moving part are each connected to two opposite edges of the flexible display screen. Two ends of the telescopic assembly are connected to the fixed part and the moving part, respectively. The telescopic assembly includes at least two foldable telescopic supports spaced apart in a direction perpendicular to a telescoping direction of the telescopic assembly.

[0004] During telescoping of the telescopic assembly, the telescoping lengths of the two foldable telescopic supports can become inconsistent. As a result, the flexible display screen tilts and may collide with the housing of the display device during this tilting motion. This impairs both the user experience and the lifespan of the flexible display screen. SUMMARY

[0005] Embodiments of the present disclosure provide a display device and a telescopic mechanism therefor, which improve the telescopic synchronization of foldable telescopic frames and thus enhance the user's operating experience and extend the service life of the flexible display screen. The technical solutions are as follows.

[0006] In one aspect, embodiments of the present disclosure provide a telescopic mechanism. The telescopic mechanism comprises a fixed part, a movable part, and a telescopic assembly, wherein the fixed part and the movable part are each used to be connected to two opposite side edges of a flexible display screen; the telescopic assembly comprises m foldable telescopic frames and m-1 compensating connecting rod assemblies, wherein m is an integer and greater than ; two ends of the foldable telescopic frame are each connected to the fixed part and the movable part, respectively; the m foldable telescopic frames are spaced apart in a first direction, and the first direction is perpendicular to a telescopic direction of the telescopic assembly;and each of the compensating connecting rod groups is arranged between two adjacent folding telescopic frames below the m folding telescopic frames, each of the compensating connecting rod groups comprises at least one compensating connecting rod, two ends of each compensating connecting rod are each connected to the two adjacent folding telescopic frames, and the longitudinal direction of the compensating connecting rod is identical to the first direction.;

[0007] Optionally, the foldable telescopic frame comprises a plurality of folding units connected sequentially along the telescoping direction, each folding unit being provided with a translation part, and during telescoping of the foldable telescopic frame the distance between the translation part and a first centerline of the telescoping assembly does not change and the longitudinal direction of the first centerline is identical to the telescoping direction; and the compensating connecting rod is connected between a translation part of a first folding unit and a translation part of a second folding unit, and the first folding unit and the second folding unit are two adjacent folding units in the first direction.

[0008] In some possible embodiments, the m foldable telescopic frames are divided into a first telescopic frame group and a second telescopic frame group, and the first telescopic frame group and the second telescopic frame group are arranged symmetrically around the first center line; the first telescopic frame group comprises a first foldable telescopic frame and a second foldable telescopic frame; a folding unit of the first foldable telescopic frame is V-shaped and comprises a first connecting rod and a second connecting rod, wherein an end of the first connecting rod and an end of the second connecting rod are connected by a first connecting part, and the second connecting rod is connected to an end of a first connecting rod of another folding unit of the first foldable telescopic frame by a second connecting part;The second foldable telescopic frame comprises a third connecting rod and a fourth connecting rod, wherein one end of the third connecting rod and one end of the fourth connecting rod are connected by a third connecting part, the third connecting rod is parallel to the first connecting rod, the fourth connecting rod is parallel to the second connecting rod, the fourth connecting rod is connected to one end of a third connecting rod of another folding unit of the second foldable telescopic frame by a fourth connecting part; and the third connecting part is a translation part of the first foldable telescopic frame, and the fourth connecting part is a translation part of the second foldable telescopic frame.

[0009] Optionally, the telescopic assembly also includes at least one synchronously moving connecting rod that is connected between the first connecting part of the first foldable telescopic frame and the second connecting part of the second foldable telescopic frame.

[0010] Optionally, each of the first connecting parts, second connecting parts, third connecting parts and fourth connecting parts comprises a first connecting structure, a second connecting structure and a connecting plate, wherein the first connecting structure and the second connecting structure are each rigidly connected to two adjacent connecting rods in a corresponding foldable telescopic frame, and the first connecting structure and the second connecting structure are each hinged to the connecting plate, and the first connecting structure and the second connecting structure each have an axis of rotation relative to the connecting plate that is perpendicular to the telescoping direction and the first direction.

[0011] Optionally, in at least one of the first connecting part, the second connecting part, the third connecting part and the fourth connecting part, each of the outer side walls of the first connecting structure and the second connecting structure has a toothed structure, and the toothed structure of the first connecting structure and the toothed structure of the second connecting structure interlock.

[0012] In some other possible embodiments, the m foldable telescopic frames are divided into a first telescopic frame group and a second telescopic frame group, and the first telescopic frame group and the second telescopic frame group are arranged symmetrically around the first center line; the first telescopic frame group comprises a first foldable telescopic frame, a folding unit of the first foldable telescopic frame comprises a first connecting rod and a second connecting rod, a middle part of the first connecting rod is hinged to a middle part of the second connecting rod, and an end of the first connecting rod is hinged to an end of a second connecting rod of another folding unit of the first foldable telescopic frame; and a part at which the middle part of the first connecting rod is hinged to the middle part of the second connecting rod is the translation part of the first foldable telescopic frame.

[0013] In several other possible embodiments, the m foldable telescopic frames are divided into a first telescopic frame group, a second telescopic frame group, and a third telescopic frame group, and the first telescopic frame group and the second telescopic frame group are arranged symmetrically around the first center line; the first telescopic frame group comprises a first foldable telescopic frame, a folding unit of the first foldable telescopic frame comprises a first connecting rod and a second connecting rod; one end of the first connecting rod and one end of the second connecting rod are connected by a first connecting part, and the second connecting rod is connected to one end of a first connecting rod of another folding unit of the first foldable telescopic frame by a second connecting part; the third telescopic frame group comprises a third foldable telescopic frame;Each folding unit of the third folding telescopic frame comprises a third connecting rod and a fourth connecting rod; a middle part of the third connecting rod is hinged to a middle part of the fourth connecting rod, and an end of the third connecting rod is hinged to an end of a fourth connecting rod of another folding unit of the third folding telescopic frame; and the second connecting part is the translation part of the first folding telescopic frame, and a part in which the middle part of the third connecting rod is hinged to the middle part of the fourth connecting rod is a translation part of the third folding telescopic frame.

[0014] Optionally, in the telescoping direction, each foldable telescopic frame has one or more folding units between a first compensating connecting rod and a second compensating connecting rod, and the first compensating connecting rod and the second compensating connecting rod are two adjacent compensating connecting rods in the telescoping direction.

[0015] Optionally, the telescopic assembly also includes at least one magnet, and a central part of the at least one compensating connecting rod is connected to the at least one magnet.

[0016] Optionally, the telescopic assembly further comprises a first connecting rod and a second connecting rod, wherein one end of the first connecting rod and one end of the second connecting rod are both connected to a central part of the compensating connecting rod, the first connecting rod and the second connecting rod are each arranged on two sides of the compensating connecting rod in the telescopic direction and are spaced apart in the first direction; and at least one magnet comprises a first magnet and a second magnet, the first connecting rod is connected to the first magnet and the second connecting rod is connected to the second magnet.

[0017] Optionally, a surface of the first connector rod, which is closer to the flexible display screen, is provided with a first mounting groove, and the first magnet is arranged in the first mounting groove; and a surface of the second connector rod, which is closer to the flexible display screen, is provided with a second mounting groove, and the second magnet is arranged in the second mounting groove.

[0018] Optionally, the telescopic mechanism further comprises two telescopic slide rails, wherein the two telescopic slide rails are arranged on two sides of the foldable telescopic assembly in the first direction; the telescopic slide rail comprises a plurality of guide rails, wherein the plurality of guide rails comprises a first fixed guide rail, a second fixed guide rail and at least one intermediate guide rail; the at least one intermediate guide rail is successively connected between the first fixed guide rail and the second fixed guide rail; the first fixed guide rail is connected to the fixed part and the second fixed guide rail is connected to the movable part;Each of the intermediate guide rails and the second fixed guide rail comprises a guide rail body and a limiting part, the guide rail body being provided with a sliding groove, and the limiting part and the sliding groove being arranged on two opposite sides of the guide rail body; and a limiting part of a first guide rail being arranged in a sliding groove of the second guide rail, and the first guide rail and the second guide rail being two connected guide rails among the plurality of guide rails.

[0019] Optionally, the maximum size of the limiting part of the first guide rail in a second direction is a first size, a size of an opening of the sliding groove of the second guide rail in the second direction is a second size; and the first size is larger than the second size; and the second direction is perpendicular to the telescopic direction and the first direction.

[0020] Optionally, a first side surface of the boundary part is provided with a clamping groove, wherein the first side surface is a side surface of the boundary part located away from a guide rail body, and the clamping groove extends from one end of the boundary part to the other end of the boundary part; and a groove bottom of the sliding groove is provided with a raised structure, and the raised structure is arranged in the clamping groove and at an end of the sliding groove located near the first fixed guide rail.

[0021] Optionally, the telescopic mechanism further comprises a rear housing, and the telescopic assembly is arranged in the rear housing; the rear housing comprises a plurality of sub-housings, and the sub-housing comprises a base plate and two side plates, each connected to two opposite sides of the base plate; and the plurality of sub-housings comprises a first fixed sub-housing, a second fixed sub-housing, and at least one intermediate sub-housing, wherein the first fixed sub-housing is connected to the fixed part, the second fixed sub-housing is connected to the moving part, and the at least one intermediate sub-housing is successively connected between the first fixed sub-housing and the second fixed sub-housing.

[0022] Optionally, an inner wall of a first side plate of a first sub-housing is provided with a first guide structure, an outer wall of a first side plate of a second sub-housing is provided with a second guide structure, the inner wall and the outer wall are at least partially opposite each other, the first guide structure fits the second guide structure, and the first sub-housing and the second sub-housing are two connected sub-housings among the plurality of sub-housings.

[0023] Optionally, the first guide structure is a guide groove, one longitudinal direction of the guide groove is identical to the telescoping direction, the second guide structure is a guide projection, and the guide projection is arranged in the guide groove.

[0024] Optionally, a bottom surface of the base plate of the second fixed sub-housing is provided with a bulge, and the bottom surface is a surface of the base plate of the second fixed sub-housing furthest from the flexible display screen; and

[0025] Both a side edge of the base plate of the first fixed sub-case and a side edge of the base plate of at least one intermediate sub-case are provided with a deflection opening that fits the bulge.

[0026] In another aspect, embodiments of the present disclosure provide a display device. The display device comprises a flexible display screen and the telescopic mechanism described above, wherein the flexible display screen is connected to the telescopic mechanism.

[0027] The advantageous effects achieved by the technical solutions provided in this disclosure include at least the following:

[0028] Two ends of the m folding telescopic frames are connected to the moving part and the fixed part, respectively. When the moving part moves relative to the fixed part, it can drive the m folding telescopic frames to extend or retract, thus realizing the telescopic function of the telescopic mechanism. A compensating connecting rod assembly is arranged between any two adjacent folding telescopic frames. Each compensating connecting rod assembly comprises at least one compensating connecting rod. Two ends of each compensating connecting rod are connected to the two adjacent folding telescopic frames, and the longitudinal direction of the compensating connecting rod is identical to the first direction. In this way, the synchronization of the telescoping of the folding telescopic frames can be improved, and the possibility of the two adjacent folding telescopic frames tilting can be reduced. BRIEF DESCRIPTION OF THE FIGURES

[0029] To more clearly describe the technical solutions in the embodiments of the present disclosure, the accompanying drawings necessary for describing these embodiments are briefly presented below. Obviously, the accompanying drawings in the following description only show some embodiments of the present disclosure, and a person skilled in the art can still derive other drawings from these accompanying drawings without any creative effort. Fig. 1 is a schematic structure diagram of a display device in a first state according to an embodiment of the present disclosure; Fig. Figure 2 is a schematic structure diagram of a display device in a second state according to an embodiment of the present disclosure; Fig. Figure 3 is a stereoscopic, exploded, schematic structural diagram of the display device in Fig. 2; Fig. Figure 4 is a schematic structural diagram of a telescopic assembly in an extended state according to an embodiment of the present disclosure; Fig. Figure 5 is a schematic structural diagram of foldable telescopic frames when the telescopic assembly is in the extended state, according to an embodiment of the present disclosure; Fig. Figure 6 is a schematic structural diagram of the foldable telescopic frame, i.e., the one in Fig. Structure shown in Figure 5 when the telescope assembly is in a retracted state; Fig. Figure 7 is a schematic structural diagram of a connecting part according to an embodiment of the present disclosure; Fig. Figure 8 is a schematic structural diagram of another connecting part according to an embodiment of the present disclosure; Fig. Figure 9 is a schematic structural diagram of a compensating connecting rod according to an embodiment of the present disclosure; Fig. 10 is a schematic structural diagram of another telescope assembly according to an embodiment of the present disclosure; Fig. 11 is a schematic structure diagram of a further telescope assembly according to an embodiment of the present disclosure; Fig. 12 is a schematic structural diagram of a further telescope assembly according to an embodiment of the present disclosure; Fig. Figure 13 is a schematic sectional view of a telescopic slide rail according to an embodiment of the present disclosure; Fig. 14 is a schematic stereoscopic structural diagram of a guide rail from an angle according to an embodiment of the present disclosure; Fig. Figure 15 is a stereoscopic schematic structural representation of the guide rail in Fig. 14 from a different angle; Fig. Figure 16 is a schematic sectional view of a guide rail body of a guide rail and a limiting part of another guide rail according to an embodiment of the present disclosure; Fig. Figure 17 is a schematic structural diagram of a rear housing in an extended state according to an embodiment of the present disclosure; Fig. Figure 18 is a schematic sectional view of the rear casing along line AA in Fig. 17; and Fig. 19 is an enlarged schematic structure diagram of section E in Fig. 18. DETAILED DESCRIPTION OF THE REVELATION

[0030] In order to describe more clearly the objectives, technical solutions and advantages of the present disclosure, the embodiments of the present disclosure are explained in more detail below with reference to the accompanying drawings.

[0031] The terms used in the "Detailed Description" section of this disclosure serve only to explain the embodiments of this disclosure and are not intended to limit the disclosure. Unless otherwise defined, technical or scientific terms used in the embodiments of this disclosure should have the normal meaning understood by a person skilled in the art with general technical knowledge. The terms "first," "second," "third," and similar terms used in the description and claims of this disclosure do not denote any order, quantity, or importance and are used only to distinguish between different components. Likewise, the terms "a" or "a / s" and similar terms denote at least one, rather than a limitation to a specific quantity.The word “encompass” or “include” and similar terms mean that elements or objects appearing before the term “encompass” or “include” cover the listed elements or objects and their equivalents appearing after the term “encompass” or “include”, while other elements or objects are not excluded.

[0032] Fig. Figure 1 is a schematic structure diagram of a display device in a first state according to an embodiment of the present disclosure. Fig. Figure 2 is a schematic structure diagram of a display device in a second state according to an embodiment of the present disclosure. As in Fig. 1 and Fig. As shown in Figure 2, the display device comprises a flexible display screen 10 and a telescopic mechanism 20. The telescopic mechanism 20 supports the flexible display screen 10.

[0033] When the display device is in the first state, the telescopic mechanism 20 is retracted and the flexible display screen 10 is at least partially housed within the telescopic mechanism 20. In this case, the volume of the display device is relatively small. The first state can be described as a retracted state or a closed state.

[0034] When the display device is in the second state, the telescopic mechanism 20 is extended and the flexible display screen 10 is spread out on the telescopic mechanism 20, thus increasing the display area of ​​the device. The second state can be described as an extended state or an open state.

[0035] For example, the area of ​​the display area of ​​the flexible display screen 10 when the display device is in the second state is n times the area of ​​the display area of ​​the flexible display screen 10 when the display device is in the first state, where n is greater than 1. For example, n is equal to 2 or 3. That is, when the display device is in the first state, (n-1) / n of the flexible display screen 10 can be housed within the telescopic mechanism 20, and the remaining 1 / n of the flexible display screen 10 is exposed. In this case, the display device is used as a small display that the user can view.

[0036] Fig. Figure 3 is a stereoscopic exploded schematic structure diagram of the display device according to the embodiment of the present disclosure. As in Fig. As shown in Figure 3, the flexible display screen 10 comprises a flexible display panel 11 and a support element 12. The flexible display panel 11 has a display area and a non-display area, which are opposite each other. The support element 12 is arranged on the non-display area and serves to support the flexible display panel 12.

[0037] When the display device is in the first state, both part of the flexible display panel 11 and part of the support element 12 are housed within the telescopic mechanism 20. When the display device is in the second state, both the flexible display panel 11 and the support element 12 are extended onto the extended telescopic mechanism 20.

[0038] The type of flexible display panel 11 is not limited in the embodiments of the present disclosure, and the flexible display panel can be an organic light-emitting diode (OLED) display panel or the like.

[0039] For example, the support element 12 can be made of a metal material, such as stainless steel.

[0040] In some examples, the support element 12 comprises a plurality of support plates arranged successively along a telescopic direction x of the telescopic mechanism 20 (not shown in the figure), and any two adjacent support plates are hingedly attached so that they can not only be accommodated together with the flexible display panel 11 in the telescopic mechanism 20, but can also support the extended flexible display panel 11.

[0041] The telescopic mechanism 20 comprises a fixed part 21, a movable part 22, and a telescopic assembly 23. The fixed part 21 and the movable part 22 are each connected to two opposite side edges of the flexible display screen 10. The telescopic assembly 23 is positioned between the fixed part 21 and the movable part 22 and is connected to both. The telescopic assembly 23 has a telescopic function and is capable of moving the fixed part 21 and the movable part 22 closer to or further apart from each other.

[0042] For example, the fixed part 21 is provided with a recording space to accommodate the flexible display screen 10.

[0043] In some examples, a roller assembly is arranged in the receiving space and is used to roll the flexible display screen 10. For example, the roller assembly comprises two rollers 211a and 211b, which are arranged parallel at a distance, and one axial direction of roller 211a is perpendicular to a telescopic direction x of the telescopic assembly 23. Roller 211a is used to roll up the flexible display panel 11, and roller 211b is used to roll up the support element 12.

[0044] In the related prior art, the telescopic assembly comprises a plurality of foldable telescopic frames arranged at intervals in a first direction y. The first direction y is perpendicular to the telescopic direction x of the telescopic assembly and is identical to the axial direction of roller 211a. Due to mounting distances between different components of the display device, asynchronous telescoping of different foldable telescopic frames can occur during the telescoping of the telescopic assembly, resulting in inconsistent lengths of the various foldable telescopic frames. This can cause the flexible display screen to tilt. In the event of severe tilting, the flexible display screen collides with a housing of the display device, negatively impacting the service life of the flexible display screen.If the flexible display screen collides with the housing of the display device, the telescoping process of the telescopic mechanism is interrupted, which negatively affects the user's ease of use.

[0045] For this purpose, in the embodiments of the present disclosure, at least one compensating connecting rod is arranged between adjacent foldable telescopic frames, and the longitudinal direction of the compensating connecting rod is identical to the first direction y, so that the telescopic synchronization of m foldable telescopic frames can be improved and the lengths of the foldable telescopic frames are relatively identical. In this way, the possibility of a collision between the flexible display screen and the housing of the display device can be reduced, which contributes to extending the service life of the flexible display screen and improving the user's operating experience.

[0046] Fig. Figure 4 is a schematic structural diagram of a telescopic assembly in an extended state according to an embodiment of the present disclosure. As in Fig. As shown in Figure 4, the telescopic assembly comprises 23 m foldable telescopic frames 231 and m-1 compensating connecting rod groups, where m is an integer greater than 1. The m foldable telescopic frames 231 are arranged at intervals in the first direction y. Each compensating connecting rod group is arranged between two adjacent foldable telescopic frames 231, and one compensating connecting rod group is arranged between each pair of adjacent foldable telescopic frames 231. Fig. 4, m is equal to 4, for example, three compensating connecting rod groups are arranged between the four foldable telescopic frames 231. In the order from top to bottom, a first compensating connecting rod group is arranged between a first foldable telescopic frame 231 and a second foldable telescopic frame 231, a second compensating connecting rod group is arranged between the second foldable telescopic frame 231 and a third foldable telescopic frame 231, and a third compensating connecting rod group is arranged between the third foldable telescopic frame 231 and a fourth foldable telescopic frame 231.

[0047] Each compensating connecting rod group comprises at least one compensating connecting rod 232. Two ends of each compensating connecting rod 232 are each connected to two adjacent foldable telescopic frames 231, and the longitudinal direction of the compensating connecting rod 232 is identical to the first direction y.

[0048] In the embodiments of the present disclosure, the fact that the longitudinal direction of the compensating connecting rod 232 is identical with the first direction y can refer to the fact that the longitudinal direction of the compensating connecting rod 232 is identical with the first direction y when the m foldable telescopic frames 231 have the same length in the telescoping direction x.

[0049] Optionally, the telescopic assembly 23 further comprises a central frame 211 of the fixed part and a central frame 221 of the movable part. The central frame 211 of the fixed part is at least partially arranged in a housing of the fixed part 21, and the central frame 221 of the movable part is at least partially arranged in a housing of the movable part 22. Two ends of the foldable telescopic frame 231 are each connected to the central frame 211 of the fixed part and the central frame 221 of the movable part, such that the two ends of the foldable telescopic frame 231 are each connected to the fixed part 21 and the movable part 22.

[0050] In other embodiments, the two ends of the foldable telescopic frame 231 can also be connected to the housing of the fixed part 21 and the housing of the movable part 22 by means of fastening means (e.g. screws).

[0051] As in Fig. As shown in Figure 4, the telescopic assembly 23 comprises four foldable telescopic frames 231. In the embodiments of the present disclosure, the number of foldable telescopic frames 231 is not limited and can be adapted according to the actual size of the flexible display screen, and it can be, for example, 2, 3, 5, 6 or the like.

[0052] Fig. Figure 5 is a schematic structural diagram of the foldable telescopic frames when the telescopic assembly is in the extended state, according to an embodiment of the present disclosure. Fig. Figure 6 is a schematic structural diagram of the foldable telescopic frame, i.e., the one in Fig. Structure 5 shown when the telescopic assembly is in a retracted state, according to one embodiment of the present disclosure. Fig. 5 and Fig. 6 the four foldable telescopic frames in the order from top to bottom are a second foldable telescopic frame 231b, a first foldable telescopic frame 231a, a third foldable telescopic frame 231c and a fourth foldable telescopic frame 231d.

[0053] The four foldable telescopic frames are divided into a first foldable telescopic frame group and a second foldable telescopic frame group. The first foldable telescopic frame group and the second foldable telescopic frame group are arranged symmetrically around a first center line O of the telescopic assembly 23. The longitudinal direction of the first center line O is identical to the telescoping direction x of the telescopic assembly 23. That is, the first foldable telescopic frame 231a is a foldable telescopic frame that is closest to the first center line O in the first foldable telescopic frame group, and the third foldable telescopic frame 231c is a foldable telescopic frame that is closest to the first center line in the second foldable telescopic frame group.The third foldable telescopic frame 231c and the first foldable telescopic frame 231a are arranged symmetrically around the first center line O, and the fourth foldable telescopic frame 231d and the second foldable telescopic frame 231b are arranged symmetrically around the first center line O.

[0054] For example, each foldable telescopic frame 231 comprises a plurality of folding units 2310 connected sequentially in the telescoping direction x, and each folding unit 2310 is provided with a translation part 2310a. During the telescoping of the foldable telescopic frame 231, the distance between the translation part 2310a and the first center line O of the telescopic assembly 23 does not change, and the translation part 2310a only moves in the telescoping direction x.

[0055] The compensating connecting rod 232 is connected between a translation part 2310a of a first folding unit and a translation part 2310a of a second folding unit. The first and second folding units each belong to two adjacent folding telescopic frames 231, and the first and second folding units are adjacent in the first direction y. Ideally, the distance between the translation parts 2310a of the two folding units adjacent in the first direction y does not change during the telescoping of the folding telescopic frames 231. Therefore, the arrangement of the compensating connecting rod 232 between the translation parts 2310a of the two adjacent folding units 2310 facilitates the synchronous telescoping of the two folding units 2310 connected by the compensating connecting rod 232.

[0056] In some examples, a folding unit 2310 of the first foldable telescopic frame 231a is V-shaped and comprises a first connecting rod 1a and a second connecting rod 1b. One end of the first connecting rod 1a and one end of the second connecting rod 1b are connected by a first connecting part, and the second connecting rod 1b is connected to one end of the first connecting rod 1a of another folding unit 2310 of the first foldable telescopic frame 231a by a second connecting part.

[0057] The second foldable telescopic frame 231b comprises a third connecting rod 1c and a fourth connecting rod 1d. One end of the third connecting rod 1c and one end of the fourth connecting rod 1d are connected by a third connecting part, and the fourth connecting rod 1d is connected by a fourth connecting part to one end of the third connecting rod 1c of another folding unit of the second foldable telescopic frame 231b. The third connecting rod 1c is parallel to the first connecting rod 1a, and the fourth connecting rod 1d is parallel to the second connecting rod 1b.

[0058] In some examples, the second foldable telescopic frame 231b has the same structure as the first foldable telescopic frame 231a and can be obtained by translational movement of the first foldable telescopic frame 231a.

[0059] Combined with Fig. 5 and Fig. 6. When the various folding telescopic frames 231 are in the extended state, the distance between the third connecting part and the first center line O is h; and when the various folding telescopic frames 231 are in a folded state, the distance between the third connecting part and the first center line O is also h. It can be seen that the distance between the third connecting part and the first center line O does not change during the telescoping of the telescopic assembly 23. Therefore, the third connecting part of the first folding telescopic frame 231a is the translation part of the first folding telescopic frame 231a. Similarly, the fourth connecting part of the second folding telescopic frame 231b is the translation part of the second folding telescopic frame 231b.

[0060] A folding unit 2310 of the third folding telescopic frame 231c is V-shaped and comprises a first connecting rod 1a and a second connecting rod 1b. One end of the first connecting rod 1a and one end of the second connecting rod 1b are connected by a first connecting part, and the second connecting rod 1b is connected to one end of the first connecting rod 1a of another folding unit 2310 of the first folding telescopic frame 231c by a second connecting part.

[0061] The fourth folding telescopic frame 231d comprises a third connecting rod 1c and a fourth connecting rod 1d. One end of the third connecting rod 1c and one end of the fourth connecting rod 1d are connected by a third connecting part, and the fourth connecting rod 1d is connected to one end of the third connecting rod 1c of another folding unit 2310 of the fourth folding telescopic frame 231d by a fourth connecting part. The third connecting rod 1c is parallel to the first connecting rod 1a, and the fourth connecting rod 1d is parallel to the second connecting rod 1b. The third folding telescopic frame 231c has the same structure as the first folding telescopic frame 231a and can be obtained by translational movement of the fourth folding telescopic frame 231d.

[0062] The third connecting part of the third folding telescopic frame 231c is the translation part of the third folding telescopic frame 231c. Similarly, the fourth connecting part of the fourth folding telescopic frame 231d is the translation part of the fourth folding telescopic frame 231d.

[0063] Fig. Figure 7 is a schematic structure diagram of a connecting part according to an embodiment of the present disclosure. As in Fig. As shown in Figure 7, the connecting part comprises a first connecting structure 2a, a second connecting structure 2b, and a connecting plate 2c. The first connecting structure 2a and the second connecting structure 2b are each rigidly connected to two adjacent connecting rods in the corresponding foldable telescopic frame 231 and are both hinged to the connecting plate 2c; and the first connecting structure 2a and the second connecting structure 2b each have an axis of rotation relative to the connecting plate 2c that is perpendicular to the telescopic direction x and the first direction y. That is, the axis of rotation of the connecting plate 2c extends along a second direction z.

[0064] For example, the first connecting structure 2a comprises two ear plates 21a, which are arranged parallel to each other and spaced apart in the second direction z. The second connecting structure 2b also comprises two ear plates 21b, which are arranged parallel to each other and spaced apart in the second direction z. The two ear plates 21a of the first connecting structure 2a are connected to one end of a connecting rod. The two ear plates 21b of the second connecting structure 2b are connected to one end of another connecting rod. For example, the two ear plates 21a and the connecting rod connected to them can be formed in one piece, and vice versa.Part of the connecting plate 2c is arranged between the two ear plates 21a and the other part of the connecting plate 2c is arranged between the two ear plates 21b.

[0065] Each of the two ear plates 21a of the first connecting structure 2a and of the two ear plates 21b of the second connecting part 2b is provided with a wave hole, and the connecting plate 2c is provided with a first wave hole c1 (see Fig. 9) provided, which fits the first connection structure 2a, and a second wave hole c2 (see Fig. 9), which fits the second connection structure 2b.

[0066] A first drive shaft is located in the shaft holes 21a in the ear plates 21a of the first connecting structure 2a and in the first shaft hole c1. The first drive shaft is in a press fit with, or is firmly connected to, the shaft holes in the ear plates 21a to firmly connect the ear plates 21a of the first connecting structure 2a and the first drive shaft; and the drive shaft is in a clearance fit with the first shaft hole c1 in the connecting plate 2c, so that the first drive shaft can rotate in the first shaft hole c1 of the connecting plate 2c. A second drive shaft is located in the shaft holes in the ear plates 21b of the second connecting structure 2b and in the second shaft hole c2.The second drive shaft is interference-fitted with or firmly connected to the shaft holes in the ear plates 21b to firmly connect the ear plates of the second connecting structure 2b and the second drive shaft; and the second drive shaft is clearance-fitted with the second shaft hole c2 in the connecting plate 2c, so that the second drive shaft can rotate in the second shaft hole c2 of the connecting plate 2c.

[0067] For example, an outer side wall of the ear plate of the first connecting structure 2a comprises a first section and a second section connected circumferentially. The first section is planar and coplanar with a first side face of the connecting rod connected to the first connecting structure 2a. An outer side wall of the ear plate of the second connecting structure 2b also comprises a first section and a second section connected circumferentially. The first section is planar and coplanar with a first side face of the connecting rod connected to the second connecting section. The first sides of these two connecting rods are coplanar.

[0068] The second section of the outer side wall of the ear plate of the first connecting structure 2a and the second section of the outer side wall of the ear plate of the second connecting structure 2b are both arc surfaces and are tangent to each other.

[0069] The outer side walls of the first connecting structure 2a and the second connecting structure 2b each have a toothed structure 2d, and the toothed structure 2d of the first connecting structure 2a and the toothed structure 2d of the second connecting structure 2b interlock. Since the toothed structure 2d of the first connecting structure 2a and the toothed structure 2d of the second connecting structure 2b interlock, the two connecting elements can be held in place by the connecting element during the telescoping of the foldable telescopic frame 231. Fig. The 8 connected connecting rods can be opened or closed synchronously. The axis of symmetry between the two connecting rods therefore always runs along the first direction x.

[0070] For example, the toothed structure 2d can be arranged on the second sections of the two ear plates 21a of the first connecting structure 2a, or on the second section 21a of one of the two ear plates 21a of the first connecting structure 2a. The toothed structure 2d of the second connecting structure 2b is arranged correspondingly to the toothed structure 2d of the first connecting structure 2a.

[0071] Fig. Figure 8 is a schematic structural diagram of another connecting part according to an embodiment of the present disclosure. As in Fig. Figure 8 shows that the structure of the in Fig. The toothed structures of the connecting part shown in section 7 have been removed in 2d.

[0072] Optionally, in the Fig. In the structure shown in Figure 7, the second drive shaft can be in a clearance fit or interference fit with the second shaft hole c2 in the connecting plate 2c, as long as the second drive shaft can rotate in the second shaft hole c2 of the connecting plate 2c under the influence of an external force. If the second drive shaft is in an interference fit with the second shaft hole c2 in the connecting plate 2c, it can provide impact damping for the telescopic assembly, thereby facilitating stepless adjustment of the size of the display area of ​​the flexible display screen 10.

[0073] In some examples, each of the aforementioned first connecting parts, second connecting parts, third connecting parts, and fourth connecting parts can define the structure of the [structure]. Fig. 7 shown connecting part or the structure of the in Fig. Assume the connecting part shown in section 8.

[0074] In some other examples, part of the first connecting part, the second connecting part, the third connecting part, and the fourth connecting part mentioned above takes on the structure of the one in Fig. The connecting part shown in section 7 is used, and the other part takes on the structure of the one shown in section 7. Fig. 8. For example, the first and second connecting parts adopt the structure of the one shown in Fig. 8 connecting part; and the third connecting part and the fourth connecting part adopt the structure of the one shown in Fig. 7 shown connection part.

[0075] If all connecting parts conform to the structure of the in Fig. Assuming the connection part shown in Figure 8, the requirements for assembly accuracy are high, as it must be ensured that the corresponding toothed structures interlock. Therefore, the structure of the part shown in Figure 8 can be... Fig. 7 shown connecting part and the way in which the in Fig. The 8 connecting parts shown are used together to reduce the requirements for assembly accuracy on the one hand and to maintain the opening and closing synchronization of the connected connecting rods on the other.

[0076] In the embodiments of the present disclosure, the third connecting part of the first foldable telescopic frame 231a and the third connecting part of the third foldable telescopic frame 231c are connected by a compensating connecting rod 232. The third connecting part of the first foldable telescopic frame 231a and the fourth connecting part of the second foldable telescopic frame 231b are connected by a compensating connecting rod 232. The third connecting part of the third foldable telescopic frame 231a and the fourth connecting part of the fourth foldable telescopic frame 231d are connected by a compensating connecting rod 232.

[0077] Optionally, in this embodiment, the number of compensating connecting rods contained in the various compensating connecting rod groups can be the same. For example, the compensating connecting rod group between the first folding telescopic frame 231a and the second folding telescopic frame 231b, the compensating connecting rod group between the third folding telescopic frame 231c and the fourth folding telescopic frame 231d, and the compensating connecting rod group between the first folding telescopic frame 231a and the third folding telescopic frame 231c each comprise three compensating connecting rods.

[0078] In this embodiment, in the telescopic direction x, for each foldable telescopic frame 231, there is one or more folding units 2310 between a first compensating connecting rod and a second compensating connecting rod; and the first compensating connecting rod and the second compensating connecting rod are two adjacent compensating connecting rods 232 in the telescopic direction x in the same compensating connecting rod group. Fig. For example, a folding unit 2310 is present between the first compensating connecting rod and the second compensating connecting rod. Fig. 10, for example, in the direction from top to bottom, for the first and third compensating connecting rod group there is a folding unit 2310 between the first compensating connecting rod and the second compensating connecting rod; and for the second compensating connecting rod group there are two folding units 2310 between the first compensating connecting rod and the second compensating connecting rod.

[0079] Optionally, a plurality of compensating connecting rods 232, which are connected between all adjacent translation parts in the first direction y, are formed in one piece. For example, the compensating connecting rod 232 between the third connecting part of the first folding telescopic frame 231a and the third connecting part of the third folding telescopic frame 231c, the compensating connecting rod 232 between the third connecting part of the first folding telescopic frame 231a and the fourth connecting part of the second folding telescopic frame 231b, and the compensating connecting rod 232 between the third connecting part of the third folding telescopic frame 231a and the fourth connecting part of the fourth folding telescopic frame 231d are formed in one piece.

[0080] The one-piece compensating connecting rods can, on the one hand, connect all foldable telescopic frames in series, leading to a further improvement in the telescopic synchronization of the various foldable telescopic frames, and on the other hand, reduce the assembly difficulty of the telescopic mechanism, thus improving assembly efficiency.

[0081] Fig. Figure 9 is a schematic structural diagram of a compensating connecting rod according to an embodiment of the present disclosure. As in Fig. As shown in Figure 9, the compensating connecting rod 232 is divided into three sections. A first section x1 is arranged between the fourth connecting part of the second folding telescopic frame 231b and the third connecting part of the first folding telescopic frame 231a, a second section x2 is arranged between the third connecting part of the first folding telescopic frame 231a and the third connecting part of the third folding telescopic frame 231c, and a third section x3 is arranged between the third connecting part of the third folding telescopic frame 231c and the fourth connecting part of the fourth folding telescopic frame 231d.

[0082] As an example, the connecting plates of all consecutive connecting parts arranged in the x-direction and the compensating connecting rod 232 are formed in one piece. In this way, the number of parts in the telescopic mechanism can be reduced, thereby decreasing the assembly difficulty.

[0083] In the embodiments of the present disclosure, the side surfaces of the various connecting parts and connecting rods (including the first to fourth connecting rods, the compensating connecting rods and the synchronously moving connecting rods) facing the flexible display screen are flush with each other to provide better support for the flexible display screen.

[0084] It should be noted that in the Fig. 4 to Fig. Figure 6 illustrates that the telescopic assembly 23 comprises four foldable telescopic frames 231. In practical application, the number of foldable telescopic frames 231 can be determined according to actual needs. It can be, for example, 6, 8, or similar. Accordingly, the number of foldable telescopic frames 231 contained in each foldable telescopic frame assembly can be 3, 4, or the like.

[0085] In the embodiments of the present disclosure, as in Fig. 5 and Fig. As shown in Figure 6, the telescopic assembly 23 further comprises at least one magnet 234, and a central portion of at least one compensating connecting rod 232 is connected to the at least one magnet 234. The magnet 234 can absorb the support element 12 of the flexible display screen 10 to prevent warping of the flexible display screen 10 and to improve the flatness of the flexible display screen 10, thereby improving the display effect.

[0086] In the embodiments of the present disclosure, a central part of each compensating connecting rod 232, which intersects the first center line, is connected to a magnet 234. In other embodiments, a portion of the central parts of a plurality of compensating connecting rods 232, which intersect the first center line O, are connected to the magnets 234.

[0087] Optionally, middle parts of compensating connecting rods 232 that do not intersect with the first center line O (i.e., compensating connecting rods 232 arranged on two sides of the first center line O) can be connected to magnets 234 or not connected.

[0088] Optional, as in Fig. As shown in Figure 9, the telescopic assembly 23 also comprises a first connecting rod 232a and a second connecting rod 232b. One end of the first connecting rod 232a and one end of the second connecting rod 232b are both connected to the central part of the compensating connecting rod 232, and the first connecting rod 232a and the second connecting rod 232b are arranged on opposite sides of the compensating connecting rod 232 in the telescoping direction. For example, the first connecting rod 232a is arranged on the left side of the corresponding compensating connecting rod 232, the second connecting rod 232b is arranged on the right side of the corresponding compensating connecting rod 232, and the longitudinal directions of both the first connecting rod 232a and the second connecting rod 232b are identical to the telescoping direction x. The first connecting rod 232a and the second connecting rod 232b are arranged at a distance in the first direction y.For example, as in . Fig. 4 and Fig. Figure 5 shows the first connector rod 232a arranged below the second connector rod 232b in the direction x. This is illustrated by example in Figure 5. Fig. 4 and Fig. Figure 5 shows the first connector rod 232a arranged below the first center line O and the second connector rod 232b arranged above the first center line O.

[0089] In the embodiments of the present disclosure, the first connecting rod 232a is connected to a first magnet and the second connecting rod 232b is connected to a second magnet.

[0090] Since the first connector rod 232a and the second connector rod 232b are arranged at a distance in the first direction y, the first and second connector rods are offset when the m foldable telescopic frames are folded, which does not impair the folding function of the foldable telescopic frames. When the m foldable telescopic frames are extended, since the first connector rod 232a and the second connector rod 232b are arranged on two sides of the balancing connector rod 232 in the telescopic direction, the flexible display screen can be adsorbed on both sides of the balancing connector rod 232 simultaneously, which increases the coverage length of the magnets in the telescopic direction x and contributes to improving the flatness of the flexible display screen.

[0091] In other embodiments, the telescopic assembly 23 may comprise only one of the first connecting rod 232a and the second connecting rod 232b.

[0092] Optionally, the surface of the first connector rod 232a located near the flexible display screen is provided with a first mounting groove 232c, and the first magnet is arranged in the first mounting groove 232c. The surface of the second connector rod 232b located near the flexible display screen is provided with a second mounting groove 232d, and the second magnet is arranged in the second mounting groove 232d. The first and second magnets are arranged in corresponding mounting grooves, which facilitates assembly.

[0093] In this configuration, the surface of the first magnet is flush with the surface of the first connecting rod, and the surface of the second magnet is flush with the surface of the second connecting rod. In this way, the entire surface of the telescopic unit is flat.

[0094] Optional, again with reference to Fig. 5 and Fig. 6. The telescopic assembly further comprises a plurality of synchronously moving connecting rods 233. The plurality of synchronously moving connecting rods 233 are connected between the first connecting parts of the first foldable telescopic frame 231a and the second connecting parts of the second foldable telescopic frame 231b. During the telescoping of the telescopic assembly 23, the first connecting part and the second connecting part move in the telescoping direction and in the first direction, but the distance between the first connecting part and the second connecting part does not change. Therefore, the synchronously moving connecting rod can be arranged between the first connecting part and the second connecting part, which does not impede the telescoping action of the telescopic assembly and can simultaneously improve the synchronization of the movement of the first connecting part and the second connecting part.

[0095] Fig. Figure 10 is a schematic structural diagram of another telescopic assembly according to an embodiment of the present disclosure. This telescopic assembly differs from the one in Fig. 5 shown by the fact that the compensating connecting rods 232 are arranged in a different way. As in Fig. As shown in Figure 10, different compensating connecting rod groups contain a different number of compensating connecting rods 232.

[0096] For example, the compensating connecting rod group between the first folding telescopic frame 231a and the second folding telescopic frame 231b comprises three compensating connecting rods, the compensating connecting rod group between the third folding telescopic frame 231c and the fourth folding telescopic frame 231d comprises three compensating connecting rods, and the compensating connecting rod group between the first folding telescopic frame 231a and the third folding telescopic frame 231c comprises one compensating connecting rod.

[0097] The number of compensating connecting rods included in each compensating connecting rod group can be adjusted according to actual needs, as long as the telescopic synchronization of the various foldable telescopic frames can be improved and the flexible display screen can be stably supported.

[0098] Fig. Figure 11 is a schematic structural diagram of a further telescope assembly according to an embodiment of the present disclosure. As in Fig. As shown in Figure 11, the telescopic assembly 23 comprises a first telescopic frame group and a second telescopic frame group. The first telescopic frame group and the second telescopic frame group are arranged symmetrically around a first center line O.

[0099] The first telescopic frame group comprises a first foldable telescopic frame 231a. The first foldable telescopic frame 231a comprises a plurality of folding units 3210 connected sequentially in the telescopic direction x, and each folding unit 2310 is X-shaped and comprises a first connecting rod 1a and a second connecting rod 1b. A middle portion of the first connecting rod 1a is hinged to a middle portion of the second connecting rod 1b, and an end of the first connecting rod 1a is hinged to an end of the second connecting rod 1b of another folding unit 2310 of the first foldable telescopic frame 231a.

[0100] The second telescopic frame group comprises a second folding telescopic frame 231b. The second folding telescopic frame 231b has the same structure as the first folding telescopic frame 231a. A folding unit 2310 of the second folding telescopic frame 231b comprises a first connecting rod 1a and a second connecting rod 1b. A middle section of the first connecting rod 1a is hinged to a middle section of the second connecting rod 1b, and an end of the first connecting rod 1a is hinged to an end of the second connecting rod 1b of another folding unit 2310 of the first folding telescopic frame 231b.

[0101] Parts where the middle parts of the first connecting rods 1a are hinged to the middle parts of the second connecting rods 1b are translation parts of the first foldable telescopic frame 231a and the second foldable telescopic frame 231b.

[0102] In Fig. 11 the telescopic assembly 23 comprises a compensating connecting rod assembly, and the compensating connecting rod assembly is arranged between the first foldable telescopic frame 231a and the second foldable telescopic frame 231b and comprises a plurality of compensating connecting rods 232.

[0103] For example, the number of compensating connecting rods 232 contained in the compensating connecting rod group is equal to the number of folding units 2310 in the first foldable telescopic frame 231a.

[0104] Fig. Figure 12 is a schematic structural diagram of a further telescope assembly according to an embodiment of the present disclosure. As in Fig. As shown in Figure 12, the telescopic assembly 23 comprises a first telescopic frame group, a second telescopic frame group, and a third telescopic frame group. The first telescopic frame group and the second telescopic frame group are arranged symmetrically around a first center line O.

[0105] The first telescopic frame group comprises a first foldable telescopic frame 231a. A folding unit 2310 of the first foldable telescopic frame 231a is V-shaped and comprises a first connecting rod 1a and a second connecting rod 1b. One end of the first connecting rod 1a and one end of the second connecting rod 1b are connected by a first connecting part, and the second connecting rod 1b is connected to one end of the first connecting rod 1a of another folding unit 2310 of the first foldable telescopic frame 231a by a second connecting part.

[0106] The first telescopic frame group comprises a second foldable telescopic frame 231b. The second foldable telescopic frame 231b and the first foldable telescopic frame 231a are arranged symmetrically around the first center line O.

[0107] The third telescopic frame group comprises a third folding telescopic frame 231c. Each folding unit 2310 of the third folding telescopic frame 231c is X-shaped and comprises a third connecting rod 1c and a fourth connecting rod 1d. A central portion of the third connecting rod 1c is hinged to a central portion of the fourth connecting rod 1d, and an end of the third connecting rod 1c is hinged to an end of the fourth connecting rod 1d of another folding unit 2310 of the third folding telescopic frame 231c.

[0108] A second connecting part is a translation part of the first foldable telescopic frame 231a. A part to which the middle part of the third connecting rod 1c is hinged to the middle part of the fourth connecting rod 1d is a translation part of the third foldable telescopic frame 231c.

[0109] In Fig. 12 The telescopic assembly 23 comprises two compensating connecting rod groups. One compensating connecting rod group is arranged between the first folding telescopic frame 231a and the third folding telescopic frame 231c, and the other compensating connecting rod group is arranged between the second folding telescopic frame 231b and the third folding telescopic frame 231c.

[0110] For example, the two compensating connecting rod groups comprise the same number of compensating connecting rods 232, and each, for example, comprises four compensating connecting rods 232.

[0111] Again, with reference to Fig. 4 In the embodiments of the present disclosure, the telescopic mechanism 20 further comprises two telescopic slide rails 24. The two telescopic slide rails 24 are arranged on two sides of the m foldable telescopic frame 231 in the first direction y, i.e., on two sides of the telescopic unit 23. The two ends of the telescopic slide rails 24 are connected to the fixed part 21 and the movable part 22, respectively.

[0112] The telescopic slide rail 24 comprises a plurality of guide rails slidably connected one after the other. In the embodiments of the present disclosure, the plurality of guide rails comprises a first fixed guide rail 241, a second fixed guide rail 242, and at least one intermediate guide rail 243. The at least one intermediate guide rail 241 is arranged successively between the first fixed guide rail 242 and the second fixed guide rail 243. The first fixed guide rail 241 is connected to the fixed part 21, and the second fixed guide rail 242 is connected to the movable part 22. In the embodiments of the present disclosure, the number of intermediate guide rails 243 is not limited and can be adjusted according to the size and storage ratio of the display device.

[0113] Fig. Figure 13 is a schematic sectional view of a telescopic slide rail according to an embodiment of the present disclosure. As in Fig. As shown in Figure 13, each guide rail comprises a guide rail body 24a which is provided with a sliding groove 24b.

[0114] Fig. 14 and Fig. Figure 15 are stereoscopic schematic structural diagrams of a guide rail from various angles according to embodiments of the present disclosure. As in Fig. 14 and Fig. As shown in Figure 15, the sliding groove 24b extends from one end of the guide rail body 24a to the other end of the guide rail body 24a. In the embodiments of the present disclosure, the sliding groove 24b of each guide rail is formed in a surface of this guide rail opposite the telescopic assembly 23. This makes it easier to reduce the size of the telescopic slide rails in the second direction z, wherein the second direction z is perpendicular to the telescopic direction x and to the first direction y, and to increase the size of the telescopic slide rails in the first direction y and improve the support capability of the telescopic slide rail.

[0115] In addition to the guide rail body 24a, the intermediate guide rail 243 and the second fixed guide rail 242 each comprise a limiting part 24c, and the limiting part 24c and the sliding groove 24b are arranged on two opposite sides of the guide rail body 24a.

[0116] Assuming that the first guide rail and the second guide rail are two interconnected guide rails, the limiting part 24c of the first guide rail is arranged in the sliding groove 24b of the second guide rail. In this way, the limiting part 24c of the first guide rail fits into the sliding groove 24b of the second guide rail to achieve relative movement of the first and second guide rails in the telescopic direction y, thereby achieving the telescopic function of the guide rails.

[0117] In the embodiments of the present disclosure, the maximum size of the limiting part 24c of the first guide rail in the second direction z is a first size L1, the size of an opening of the sliding groove 24b of the second guide rail in the second direction z is a second size L2, and the first size L1 is larger than the second size L2. In this way, the limiting part 24c of the first guide rail can only disengage from the sliding groove 24b of the second guide rail with difficulty, thereby improving the reliability of the telescopic slide rails during telescoping.

[0118] Optionally, the cross-sectional shape of the sliding groove 24b can be diamond-shaped (as in part (a) of Fig. 16), water droplet-shaped (as shown in part (b) of Fig. 16) or T-shaped (as shown in part (c) of Fig. 16 shown) or the like.

[0119] Optionally, in some examples, a first side surface of the limiting part 24c is provided with a clamping groove 24d, wherein the first side surface is a side surface of the limiting part 24c located away from the corresponding guide rail body 24a, and the clamping groove 24d extends from one end of the limiting part to the other end of the limiting part 24c. The groove floor of the sliding groove 24b is provided with a raised structure 24e, which is arranged at an end of the sliding groove 24b located near the first fixed guide rail 241. The raised structure 24e is arranged in the clamping groove 24d such that the limiting part 24c is fully open, thereby further preventing the limiting part from disengaging from the sliding groove.Since the limiting element is provided with the clamping groove 24d, the cross-sectional area of ​​the limiting element of the first guide rail is reduced after compression during assembly of the first and second guide rails, allowing it to easily enter the sliding groove of the second guide rail. This can improve the efficiency of the guide rail assembly.

[0120] The raised structure 24e is, for example, a raised strip, and the longitudinal direction of the raised strip is identical to the extension direction of the sliding groove 24b. Optionally, the lower surface of the raised strip is connected to the groove bottom of the sliding groove, and the upper surface of the raised strip is arcuate to facilitate its extension into the clamping groove 24d.

[0121] Optional, in conjunction with Fig. 4 and Fig. 17, the telescopic mechanism 23 also includes a rear housing 25, and the telescopic assembly 23 and the telescopic slide rail 24 are arranged in the rear housing 25.

[0122] The rear housing 25 comprises a plurality of sub-housings, including a first fixed sub-housing 251, a second fixed sub-housing 252, and an intermediate sub-housing 253. The first fixed sub-housing 251 is connected to the fixed part 21, and the second fixed sub-housing 252 is connected to the moving part 22. The intermediate sub-housing 253 is connected between the first fixed sub-housing 251 and the second fixed sub-housing 252.

[0123] In the embodiments of the present disclosure, the number of intermediate sub-housings is not limited and can be determined according to the size and storage ratio of the display device. For example, it can be 1, 2, 3 or similar.

[0124] Fig. Figure 18 is a schematic sectional diagram of the rear casing along line AA in Fig. 17; and Fig. 19 is an enlarged schematic structure diagram of section E in Fig. 18. In connection with the Fig. 18 and Fig. In the embodiments described in the present disclosure, each lower housing comprises a base plate 25a and two side plates 25b, each of which is connected to two opposite sides of the base plate 25a. It should be noted that in Fig. Figure 19 shows only one side plate 25b. In this way, the base plate 25a and the two side plates 25b of the lower housing define a receiving space for the arrangement of the telescopic assembly 23 and the telescopic slide rail 24.

[0125] An inner wall of the first side plate of the first sub-housing is provided with a first guide structure 25e, and an outer wall of the first side plate of the second sub-housing is provided with a second guide structure 25f. The inner wall and the outer wall are at least partially opposite each other, and the first guide structure 25e fits the second guide structure 25f. The first sub-housing and the second sub-housing are two sub-housings 251 that are connected to each other.

[0126] Optionally, the first guide structure 25e is a guide groove, and the longitudinal direction of the guide groove is identical to the telescope direction x. The second guide structure 25f is a guide projection arranged in the guide groove.

[0127] The bottom surface of the base plate 25a of the second fixed sub-case 252 is provided with a bulge 25c, and this bottom surface is a face of the base plate 25a furthest from the flexible display screen. The bulge 25c can serve as a handle, making it easier for a user to open the rear case and thereby drive the telescoping assembly and the telescoping slide rail for telescoping. A side edge of the base plate 25a of each of the sub-cases except the second fixed sub-case 252 is provided with a relief opening 25d that fits the bulge 25c. When the rear case is in a retracted state, the bulge 25c is positioned within the relief opening 25d, thus not interfering with the telescoping action of the telescoping mechanism.

[0128] In the embodiments of the present disclosure, the shape of the bulge 25c is not limited. For example, the bulge 25c can be arc-shaped, semi-cylindrical, or the like.

[0129] Embodiments of the present disclosure further provide a telescopic mechanism. The telescopic mechanism comprises a fixed part, a movable part, and a telescopic assembly. The fixed part and the movable part are each used to connect to two opposite side edges of a flexible display screen.

[0130] The telescopic assembly comprises m foldable telescopic frames, where m is an integer greater than 1. Two ends of the foldable telescopic frame are connected to the fixed part and the movable part, respectively. The m foldable telescopic frames are spaced apart in a first direction, and the first direction is perpendicular to a telescopic direction of the telescopic assembly. The foldable telescopic frame comprises a plurality of folding units connected sequentially in the telescopic direction of the telescopic assembly. The foldable telescopic frames include at least two first foldable telescopic frames. A folding unit of the first foldable telescopic frame is V-shaped and comprises a first connecting rod and a second connecting rod.One end of the first connecting rod and one end of the second connecting rod are connected by a first connecting part, and the second connecting rod is connected to one end of the first connecting rod of another folding unit of the first foldable telescopic frame by a second connecting part.

[0131] With the same telescoping distance and fixed length of a single connecting rod, the foldable telescopic frame needs to contain a relatively small number of connecting rods, which helps to reduce the weight of the display device.

[0132] As an example, the foldable telescopic frames are divided into a first telescopic frame group and a second telescopic frame group. The first telescopic frame group and the second telescopic frame group are arranged symmetrically around a first center line of the telescopic assembly.

[0133] In some possible embodiments, the first telescopic frame group comprises at least two first foldable telescopic frames. The associated content refers to the associated content of the in Fig. 4 to Fig. 6 or Fig. The 10 illustrated embodiments are not described in detail here.

[0134] In other possible embodiments, the first telescopic frame group comprises at least one first foldable telescopic frame and at least one second foldable telescopic frame. The related content refers to the related content of the in Fig. The embodiment shown in 12 is not described in detail here.

[0135] The above descriptions are only alternative embodiments of the present disclosure and are not intended to limit the present disclosure. All modifications, equivalent replacements, improvements, and the like made within the spirit and principles of the present disclosure should be included within the scope of protection of the present disclosure.

Claims

[1] Telescopic mechanism comprising a fixed part (21), a movable part (22) and a telescopic assembly (23), wherein the fixed part (21) and the movable part (22) are configured to each be connected to two opposite side edges of a flexible display screen (10); the telescopic assembly (23) comprises m foldable telescopic frames (231) and m-1 compensating connecting rod assemblies, where m is an integer and greater than 1; two ends of the foldable telescopic frame (231) are each connected to the fixed part (21) and the movable part (22), respectively, which are arranged at intervals in a first direction (y) of the foldable telescopic frame (231), and the first direction (y) is perpendicular to a telescoping direction (x) of the telescopic assembly; and each of the compensating connecting rod groups is arranged between two adjacent foldable telescopic frames (231) below the m foldable telescopic frames (231), each of the compensating connecting rod groups comprises at least one compensating connecting rod (232), two ends of each compensating connecting rod (232) are connected to the two adjacent foldable telescopic frames (231), and one longitudinal direction of the compensating connecting rod (232) is identical to the first direction (y). [2] Telescopic mechanism according to claim 1, wherein the foldable telescopic frame (231) comprises a plurality of folding units (2310) connected successively along the telescoping direction (x), each of the folding units (2310) being provided with a translation part, and wherein during the telescoping of the foldable telescopic frame (231) a distance between the translation part and a first center line (O) of the telescoping assembly (23) does not change, and a longitudinal direction of the first center line (O) is identical to the telescoping direction (x); and the compensating connecting rod (232) is connected between a translation part of a first folding unit and a translation part of a second folding unit, and the first folding unit and the second folding unit are two adjacent folding units (2310) in the first direction. [3] Telescopic mechanism according to claim 2, wherein the m foldable telescopic frames (231) are divided into a first telescopic frame group and a second telescopic frame group, and the first telescopic frame group and the second telescopic frame group are arranged symmetrically around the first center line (O); the first telescopic frame group comprises a first foldable telescopic frame (231a) and a second foldable telescopic frame (231b); a folding unit of the first foldable telescopic frame (231a) is V-shaped, and comprises a first connecting rod (1a) and a second connecting rod (1b), wherein an end of the first connecting rod (1a) and an end of the second connecting rod (1b) are connected by a first connecting part, and the second connecting rod (1b) is connected to an end of a first connecting rod (1a) of another folding unit (2310) of the first foldable telescopic frame (231a) by a second connecting part; the second foldable telescopic frame (23b) comprises a third connecting rod (1c) and a fourth connecting rod (1d), wherein one end of the third connecting rod (1c) and one end of the fourth connecting rod (1d) are connected by a third connecting part, the third connecting rod (1c) is parallel to the first connecting rod (1a), the fourth connecting rod (1d) is parallel to the second connecting rod (1b), and the fourth connecting rod (1d) is connected to one end of a third connecting rod (1c) of another folding unit (2310) of the second foldable telescopic frame by a fourth connecting part; and the third connecting part is the translation part of the first foldable telescopic frame (231a), and the fourth connecting part is the translation part of the second foldable telescopic frame (231b). [4] Telescopic mechanism according to claim 3, wherein the telescopic assembly further comprises at least one synchronously moving connecting rod (233) which is connected between the first connecting part of the first foldable telescopic frame (231a) and the second connecting part of the second foldable telescopic frame (231b). [5] Telescopic mechanism according to claim 3, wherein any one of the first connecting part, the second connecting part, the third connecting part and the fourth connecting part comprises a first connecting structure (2a), a second connecting structure (2b) and a connecting plate (2c); the first connecting structure and the second connecting structure are each firmly connected to two adjacent connecting rods in a corresponding foldable telescopic frame (231), and the first connecting structure (2a) and the second connecting structure (2b) are each hinged to the connecting plate (2c), and the first connecting structure (2a) and the second connecting structure (2b) each have an axis of rotation relative to the connecting plate (2c) that is perpendicular to the telescope direction (x) and the first direction (y). [6] Telescopic mechanism according to claim 5, wherein in at least one of the first connecting part, the second connecting part, the third connecting part and the fourth connecting part each of the outer side walls of the first connecting structure (2a) and the second connecting structure (2b) has a toothed structure (2d), and the toothed structure (2d) of the first connecting structure (2a) and the toothed structure (2d) of the second connecting structure (2b) are in engagement with each other. [7] Telescopic mechanism according to claim 2, wherein the m foldable telescopic frames (231) are divided into a first telescopic frame group and a second telescopic frame group, and the first telescopic frame group and the second telescopic frame group are arranged symmetrically around the first center line (O); the first telescopic frame group comprises a first foldable telescopic frame (231a), a folding unit (2310) of the first foldable telescopic frame (231a) comprises a first connecting rod (1a) and a second connecting rod (1b), a middle part of the first connecting rod (1a) is hinged to a middle part of the second connecting rod (1b), and an end of the first connecting rod (1a) is hinged to an end of a second connecting rod (1b) of another folding unit (2310) of the first foldable telescopic frame (231a); and a part in which the middle part of the first connecting rod (1a) is hinged to the middle part of the second connecting rod (1b), is the translation part of the first foldable telescopic frame (231a). [8] Telescopic mechanism according to claim 2, wherein the m foldable telescopic frames (231) are divided into a first telescopic frame group, a second telescopic frame group and a third telescopic frame group, and the first telescopic frame group and the second telescopic frame group are arranged symmetrically about the first center line (O); the first telescopic frame group comprises a first foldable telescopic frame (231a), a folding unit (2310) of the first foldable telescopic frame (231a) comprises a first connecting rod (1a) and a second connecting rod (1b); an end of the first connecting rod (1a) and an end of the second connecting rod (1b) are connected by a first connecting part, and the second connecting rod (1b) is connected to an end of a first connecting rod (1a) of another folding unit (2310) of the first foldable telescopic frame (231a) by a second connecting part; the third telescopic frame group comprises a third folding telescopic frame (231c); each folding unit (2310) of the third folding telescopic frame (231c) comprises a third connecting rod (1c) and a fourth connecting rod (1d); a middle portion of the third connecting rod (1c) is hinged to a middle portion of the fourth connecting rod (1d), and an end of the third connecting rod (1c) is hinged to an end of a fourth connecting rod (1d) of another folding unit (2310) of the third folding telescopic frame (231c); and the second connecting part is the translation part of the first foldable telescopic frame (231a), and a part to which the middle part of the third connecting rod (1c) is hinged to the middle part of the fourth connecting rod (1d), is the translation part of the third foldable telescopic frame (231c). [9] Telescopic mechanism according to any one of claims 2 to 8, wherein in the telescoping direction (x), for each foldable telescopic frame (231) there are one or more folding units (2310) between a first compensating connecting rod and a second compensating connecting rod, and the first compensating connecting rod and the second compensating connecting rod are two compensating connecting rods (232) adjacent in the telescoping direction (x) in the same compensating connecting rod group. [10] Telescopic mechanism according to claim 9, wherein the telescopic assembly (23) further comprises at least one magnet (234) and a central part of the at least one compensating connecting rod (232) is connected to the at least one magnet (234). [11] Telescopic mechanism according to claim 10, wherein the telescopic assembly further comprises a first connecting rod (232a) and a second connecting rod (232b), wherein one end of the first connecting rod (232a) and one end of the second connecting rod (232b) are both connected to a central part of the compensating connecting rod (232), wherein the first connecting rod (232a) and the second connecting rod (232b) are each arranged on two sides of the compensating connecting rod (232) in the telescopic direction (x) and are spaced apart in the first direction (y); and the at least one magnet (234) comprises a first magnet and a second magnet, the first connecting rod (232a) being connected to the first magnet, and the second connecting rod (232b) being connected to the second magnet. [12] Telescopic mechanism according to claim 11, wherein a surface of the first connecting rod (232a) located near the flexible display screen is provided with a first mounting groove (232c), and the first magnet is arranged in the first mounting groove (232c); and a surface of the second connecting rod (232b) located near the flexible display screen is provided with a second mounting groove (232d), and the second magnet is arranged in the second mounting groove (232d). [13] Telescopic mechanism according to one of claims 1 to 8 and 10 to 12, further comprising two telescopic slide rails (24), wherein the two telescopic slide rails (24) are arranged on two sides of the telescopic assembly (23) in the first direction (y); the telescopic slide rail (24) comprises a plurality of guide rails, wherein the plurality of guide rails comprises a first fixed guide rail (241), a second fixed guide rail (242) and at least one intermediate guide rail (243); the at least one intermediate guide rail (243) is successively connected between the first fixed guide rail (241) and the second fixed guide rail (242); the first fixed guide rail (241) is connected to the fixed part (21), and the second fixed guide rail (242) is connected to the movable part (22); both the intermediate guide rail (243) and the second fixed guide rail (242) comprise a guide rail body (24a) and a limiting part (24c), the guide rail body (24a) being provided with a sliding groove (24b), and the limiting part (24b) and the sliding groove (24b) being arranged on two opposite sides of the guide rail body (24a); and a limiting part (24c) of a first guide rail is arranged in a sliding groove (24b) of the second guide rail, and the first guide rail and the second guide rail are two connected guide rails from the plurality of guide rails. [14] Telescopic mechanism according to claim 13, wherein a maximum size of the limiting part (24c) of the first guide rail in a second direction (z) is a first size (L1), a size of an opening of the sliding groove (24b) of the second guide rail in the second direction (z) is a second size (L2), and the first size (L1) is larger than the second size (L2); and the second direction (z) is perpendicular to the telescoping direction (x) and the first direction (y). [15] Telescopic mechanism according to claim 14, wherein a first side surface of the limiting part (24c) is provided with a clamping groove (24d), the first side surface is a side surface of the limiting part (24c) located away from a corresponding guide rail body (24a), and the clamping groove (24d) extends from one end of the limiting part (24c) to the other end of the limiting part (24c); and a groove bottom of the sliding groove (24b) is provided with a raised structure (24e), and the raised structure (24e) is arranged in the clamping groove (24d) and at an end of the sliding groove (24b) located near the first fixed guide rail (251). [16] Telescopic mechanism according to one of claims 1 to 8, 10 to 12 and 14 and 15, which further comprises a rear housing (25) and the telescopic assembly (23) is arranged in the rear housing (25); the rear housing (25) comprises a plurality of sub-housings, and the sub-housing comprises a base plate (25a) and two side plates (25b), each of which is connected to two opposite sides of the base plate (25a); and The plurality of sub-housings comprises a first fixed sub-housing (251), a second fixed sub-housing (252) and at least one intermediate sub-housing (253), wherein the first fixed sub-housing (251) is connected to the fixed part (21), the second fixed sub-housing (252) is connected to the movable part (22), and the at least one intermediate sub-housing (253) is successively connected between the first fixed sub-housing (251) and the second fixed sub-housing (252). [17] Telescopic mechanism according to claim 16, wherein an inner wall of a first side plate of a first sub-housing is provided with a first guide structure (25e), an outer wall of a first side plate of a second sub-housing is provided with a second guide structure (25f), the inner wall and the outer wall are at least partially opposite each other, the first guide structure (25e) fits the second guide structure (25f), and the first sub-housing and the second sub-housing are two connected sub-housings among the plurality of sub-housings. [18] Telescopic mechanism according to claim 17, wherein the first guide structure (25e) is a guide groove, a longitudinal direction of the guide groove is identical to the telescopic direction (x), the second guide structure (25f) is a guide projection and the guide projection is arranged in the guide groove. [19] Telescopic mechanism according to claim 17 or 18, wherein a bottom surface of the base plate (25a) of the second fixed lower housing (252) is provided with a bulge (25c), and the bottom surface is a surface of the base plate (25a) of the second fixed lower housing (252) away from the flexible display screen (10); and both a side edge of the base plate (25a) of the first fixed sub-housing (251) and a side edge of the base plate (25a) of the at least one intermediate sub-housing (253) is provided with a deflection opening (25d) that fits the bulge (25c). [20] Display device comprising a flexible display screen and the telescopic mechanism according to any one of claims 1 to 19, wherein the flexible display screen is connected to the telescopic mechanism.

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