Lifting mechanism and display device

Abstract

The utility model provides a lifting mechanism and a display device, and relates to the technical field of display devices. The lifting mechanism comprises a driving assembly, a lifting assembly, a supporting assembly and a sensor. The roller module is arranged in the supporting assembly, the roller module can be used for supporting the flexible screen, the contact area between the supporting assembly and the flexible screen can be increased, and the supporting effect on the flexible screen is improved. Meanwhile, due to the fact that the roller module makes rolling contact with the flexible screen, the resistance of the flexible screen in the lifting process can be reduced, and the problem that the flexible screen is pulled to be damaged in the lifting process can be further solved. A sensor is further arranged on the flexible screen and / or the supporting assembly, the sensor is used for obtaining the pulling force borne by the flexible screen or the pressure borne by the supporting assembly, and the pulling force borne by the flexible screen in the using process can be accurately obtained through the sensor; and the problem that the flexible screen is damaged by pulling in the lifting process can be further solved.

Description

Technical Field

[0001] This application relates to the field of lifting structure technology, specifically to a lifting mechanism and a display device suitable for display devices. Background Technology

[0002] With the rapid development of display technology, various display devices can be seen everywhere in life, such as common LCD TVs and LCD monitors. However, these display devices take up a lot of space and are not convenient to carry because of the large size of the screen itself.

[0003] In the prior art, a display device with a height-adjustable and retractable screen is provided. Although this display device can solve the problem of large space occupation to a certain extent, the tensile force on the screen cannot be determined during the screen lifting process. The screen (flexible OLED screen) is relatively fragile and the tensile force it can accept is limited to a few kilograms. As a result, the lifting mechanism cannot accurately control the force to drive the screen to lift and lower, which can easily lead to damage to the screen by the lifting mechanism.

[0004] Related technologies typically use empirical methods to determine the tension on the screen. For example, by judging the tightness of the screen and noise during the lifting process, the range of tension on the screen is estimated, and the driving force of the lifting mechanism is adjusted to drive the screen to lift. However, this solution still cannot accurately solve the problem of screen damage. Utility Model Content

[0005] This application provides a lifting mechanism and a display device, which aims to solve the technical problem that the flexible screen in existing rollable display devices is easily damaged by pulling.

[0006] On the one hand, this application provides a lifting mechanism for supporting a flexible screen module, the flexible screen module including a flexible screen, and the lifting mechanism including a driving component, a lifting component, a supporting component, and a sensor;

[0007] The support assembly includes a roller module and a crossbar, the roller module being rotatably connected to the crossbar; the roller module is used to support the flexible screen; the crossbar is connected to the lifting assembly;

[0008] The drive component is connected to the lifting component, and the drive component is configured to drive the lifting component to move and the support component to move along the lifting direction;

[0009] The sensor is disposed on the flexible screen and / or the support assembly, and is used to obtain the tensile force on the flexible screen or the pressure on the support assembly.

[0010] A second aspect of this application provides a display device, the display device including a flexible screen module, a control module, and the lifting mechanism; the control module is electrically connected to the sensor and the driving component respectively, and the control module is configured to control the driving speed of the driving component according to the pressure value obtained by the sensor.

[0011] In this application, by setting a roller module in the support component, the roller module can be used to support the flexible screen, which helps to increase the contact area between the support component and the flexible screen, improve the support effect on the flexible screen, and help to improve the problem of the flexible screen being pulled and damaged during the lifting process.

[0012] Meanwhile, since the roller module can rotate and rolls in contact with the flexible screen, it helps to reduce the friction between the roller module and the flexible screen module, which helps to reduce the resistance of the flexible screen during the lifting process and further improves the problem of the flexible screen being pulled and damaged during the lifting process.

[0013] Meanwhile, this application also provides sensors on the flexible screen and / or the support component. The sensors are used to obtain the tensile force on the flexible screen or the pressure on the support component. Since the flexible screen is supported by the support component, the tensile force on the flexible screen and the pressure on the support component are a pair of interacting forces. The sensors can accurately obtain the tensile force on the flexible screen during use, which is beneficial to further improve the problem of the flexible screen being pulled and damaged during lifting. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of one embodiment of the display device provided in this application;

[0016] Figure 2 yes Figure 1 The image shows a cross-sectional view of a certain part of the display device.

[0017] Figure 3 yes Figure 1 The diagram shows the display device in its unfolded state.

[0018] Figure 4 yes Figure 1 A schematic diagram of a partial explosion of the shell shown;

[0019] Figure 5This is a structural schematic diagram of the first embodiment of the lifting mechanism provided in this application;

[0020] Figure 6 This is a schematic diagram of the structure of the second embodiment of the lifting mechanism provided in this application;

[0021] Figure 7 yes Figure 6 A cross-sectional view of the lifting mechanism shown;

[0022] Figure 8 yes Figure 7 A magnified view of a section at point A in the middle;

[0023] Figure 9 yes Figure 6 Schematic diagram of the middle crossbar;

[0024] Figure 10 yes Figure 9 A magnified view of a section at point B in the middle;

[0025] Figure 11 yes Figure 5 A schematic diagram of the lifting mechanism in its semi-deployed state;

[0026] Figure 12 yes Figure 5 A schematic diagram of the lifting mechanism in the folded state;

[0027] Figure 13 This is a three-dimensional structural diagram of the base in an embodiment of this application;

[0028] Figure 14 yes Figure 13 A structural schematic diagram of the central base from another perspective;

[0029] Figure 15 This is a schematic diagram of the lower connecting rod in an embodiment of this application;

[0030] Figure 16 yes Figure 15 A structural schematic diagram of the lower middle link from another perspective;

[0031] Figure 17 This is a schematic diagram of the upper connecting rod in an embodiment of this application;

[0032] Figure 18 yes Figure 17 A structural schematic diagram of the upper and middle connecting rod from another perspective;

[0033] Figure 19 This is a partial structural diagram of the upper and lower connecting rods at the connection point in an embodiment of this application;

[0034] Figure 20 yes Figure 19 A cross-sectional view of the connection between the upper and lower connecting rods;

[0035] Figure 21 This is a partial exploded view of the connection between the upper connecting rod, the crossbar, and the roller module in an embodiment of this application;

[0036] Figure 22 This is a schematic diagram of the transmission link in an embodiment of this application;

[0037] Figure 23 yes Figure 22 A schematic diagram of the central transmission connecting rod from another perspective;

[0038] Figure 24 This is a partial structural diagram of the driving component in an embodiment of this application;

[0039] Figure 25 This is a schematic diagram of the connection of the bridge strain gauge in the embodiments of this application;

[0040] Figure 26 This is a schematic diagram illustrating the working principle of the PI controller in the embodiments of this application. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0045] With the rapid development of display technology, various display devices can be seen everywhere in life, such as common LCD TVs and LCD monitors. However, these display devices take up a lot of space and are not convenient to carry because of the large size of the screen itself.

[0046] In the prior art, a display device with a height-adjustable and retractable screen is provided. Although this display device can solve the problem of large space occupation to a certain extent, the tensile force on the screen cannot be determined during the screen lifting process. The screen (flexible OLED screen) is relatively fragile and the tensile force it can accept is limited to a few kilograms. As a result, the lifting mechanism cannot accurately control the force to drive the screen to lift and lower, which can easily lead to damage to the screen by the lifting mechanism.

[0047] Related technologies typically use empirical methods to determine the tension on the screen. For example, by judging the tightness of the screen and noise during the lifting process, the range of tension on the screen is estimated, and the driving force of the lifting mechanism is adjusted to drive the screen to lift. However, this solution still cannot accurately solve the problem of screen damage.

[0048] In view of this, this application provides a lifting mechanism, which includes a drive component, a lifting component, a support component, and sensors. By setting a roller module in the support component to support the flexible screen, the contact area between the support component and the flexible screen is increased, improving the support effect on the flexible screen and mitigating the problem of the flexible screen being pulled and damaged during lifting. Simultaneously, since the roller module can rotate, the roller module and the flexible screen make rolling contact, which helps reduce the friction between the roller module and the flexible screen module, reducing the resistance of the flexible screen during lifting and further mitigating the problem of the flexible screen being pulled and damaged during lifting. Furthermore, this application also sets sensors on the flexible screen and / or the support component. The sensors are used to obtain the tensile force on the flexible screen or the pressure on the support component. Since the flexible screen is supported by the support component, the tensile force on the flexible screen and the pressure on the support component are a pair of interacting forces. The sensors can accurately obtain the tensile force on the flexible screen during use, further mitigating the problem of the flexible screen being pulled and damaged during lifting.

[0049] The display device and lifting mechanism in this application will be further described below with reference to specific embodiments.

[0050] Please see Figures 1 to 3 This application provides a display device 1000, which includes a housing 100, a lifting mechanism 200, a screen take-up roller module 400, a flexible screen module 600, and a control module (not shown in the figure). The housing 100 protects its internal components, and the lifting mechanism 200 drives the flexible screen module 600 and the support assembly 240 along a preset lifting direction F (e.g., ...). Figure 2 The flexible screen module 600 (vertically) extends or retracts, and is used to display information. The screen rewind roller module 400 is used to rewind or release the flexible screen 610 of the flexible screen module 600. The control module is used to control the operation and display of the display device 1000.

[0051] Specifically, please refer to Figures 5 to 8The lifting mechanism 200 includes a drive component 221, a lifting component 222, a sensor 230, and a support component 240. The drive component 221 is connected to the lifting component 222, and the lifting component 222 is connected to the support component 240. The drive component 221 is configured to drive the lifting component 222 to move and change its length in the lifting direction F, so that the lifting component 222 drives the support component 240 to move up and down along the lifting direction F. That is, the drive component 221 is used to drive the lifting component 222, the support component 240, and the flexible screen module 600 to move up and down along the lifting direction F of the lifting component 222. For example, the lifting component 222 can be a lifting linkage or a telescopic rod, as long as its length in the lifting direction F is variable; no limitation is made here. It is understandable that, since the support component 240 is connected to the lifting component 222, and the flexible screen module 600 is supported on the support component 240, when the lifting component 222 moves along the lifting direction under the driving action of the driving component 221, the support component 240 and the flexible screen module 600 can also move up and down along the lifting direction F with the lifting component 222.

[0052] In this embodiment, the sensor 230 is disposed on the flexible screen 610 and / or the support component 240, and is used to acquire the tensile force on the flexible screen 610 or the pressure on the support component 240. Exemplarily, in some embodiments of this application, the sensor 230 may be a pressure sensor, a tensile sensor, or a deformation sensor, etc., and is not limited thereto. The sensor 230 may be disposed on the flexible screen 610, or on the support component 240, or sensors may be disposed on both the flexible screen 610 and the support component 240, and is not limited thereto.

[0053] For example, the lifting mechanism 200 includes two sensors 230, which are symmetrically arranged at both ends of the body 2421. The sensors 230 are bridge-type strain gauges. Specifically, as... Figure 8 A gap is provided between the roller module 241 and the body 2421, and the bridge strain gauge is at least partially disposed in the gap between the roller module 241 and the body 2421, near the lug 2422. This helps to improve the structural compactness of the lifting mechanism 200 and improve the accuracy of the pressure value acquired by the sensor 230.

[0054] In this application, by setting a roller module 241 in the support component 240, the roller module 241 can be used to support the flexible screen 610, which helps to increase the contact area between the support component 240 and the flexible screen 610, improve the support effect on the flexible screen 610, and help to improve the problem of the flexible screen 610 being pulled and damaged during the lifting process.

[0055] Meanwhile, since the roller module 241 can rotate, the roller module 241 and the flexible screen 610 roll contact, which helps to reduce the friction between the roller module 241 and the flexible screen 610, and helps to reduce the resistance of the flexible screen 610 during the lifting process, further improving the problem of the flexible screen 610 being pulled and damaged during the lifting process.

[0056] Meanwhile, this application also provides a sensor 230 on the flexible screen 610 and / or the support component 240. The sensor 230 is used to obtain the tensile force value of the flexible screen 610 or the pressure value of the support component 240. Since the flexible screen 610 is supported by the support component 240, the tensile force on the flexible screen 610 and the pressure on the support component 240 are a pair of interacting forces. The sensor 230 can accurately obtain the tensile force on the flexible screen 610 during use, which is beneficial to further improve the problem of the flexible screen 610 being pulled and damaged during lifting.

[0057] Specifically, please refer to Figure 5 , Figure 6 , Figure 9 as well as Figure 10 .in, Figure 5 and Figure 6 The difference lies in the specific structure of the crossbars (242a; 242b). Figure 9 As shown in the example of crossbar 242b, the crossbar 242b includes a body 2421 and a pair of lugs 2422, which are disposed opposite each other at both ends of the body 2421 along its length. A lifting connection portion 2423 is provided on the body 2421 between the pair of lugs 2422, and the lifting connection portion 2423 is connected to the lifting assembly 222. Thus, by connecting the lifting connection portion 2423 to the lifting assembly 222, the lifting assembly 222 can drive the crossbar 242b to move up and down along the lifting direction. It should be noted that the lifting connection portion 2423 and the lifting assembly 222 can be fixedly connected or movably connected (e.g., rotatably connected), and this is not limited here.

[0058] Specifically, please refer to [the relevant document] again. Figure 5 , Figure 6 and Figure 9 The roller module 241 is disposed on the side of the body 2421 opposite to the lifting assembly 222, and its two ends are respectively rotatably connected to the pair of lugs 2422; the roller module 241 is used to support the flexible screen 610 of the flexible screen module 600. Exemplarily, in the pair of lugs 2422, each lug 2422 has a connecting shaft 24221 on the side facing the other lug 2422, and each connecting shaft 24221 is inserted into a corresponding end of the roller module 241 and rotatably connected to the roller module 241.

[0059] Specifically, please refer to Figures 2 to 4 The housing 100 has a mounting cavity 110 inside, and the housing 100 has a first opening 161 that communicates with the mounting cavity 110. Specifically, in this embodiment of the application, the driving component 221 is used to drive the lifting component 222, the support component 240 and the flexible screen module 600 to enter and exit the mounting cavity 110 through the first opening 161.

[0060] It should be noted that the shape of the shell 100 and the material used to manufacture the shell 100 are not limited in this application. For example, the material used to manufacture the shell 100 may be a metal, an alloy (e.g., aluminum alloy), a plastic (e.g., polycarbonate), a glass, or a fiber composite material, etc. The shape of the shell 100 may be, for example, a cuboid, a cylinder, a sphere, a polygonal prism, etc. Unless otherwise specified, the following description uses a generally cuboid shape as an example.

[0061] For a specific example in this embodiment, please refer to Figure 1 and Figure 4 The housing 100 is generally cuboid in shape and includes a front panel 10, a rear panel 13, a left panel 14, a right panel 15, a top panel 16, and a bottom panel 17. The front panel 10 and rear panel 13 are positioned opposite each other along the width direction of the housing 100, the top panel 16 and bottom panel 17 are positioned opposite each other along the height direction of the housing 100, and the left panel 14 and right panel 15 are positioned opposite each other along the length direction of the housing 100. The front panel 10, rear panel 13, left panel 14, right panel 15, top panel 16, and bottom panel 17 together form a mounting cavity 110. For ease of description, the length direction of the housing 100 is defined as the X-axis, the width direction as the Y-axis, and the height direction as the Z-axis. The X-axis, Y-axis, and Z-axis are all perpendicular to each other.

[0062] Please refer to some embodiments of this application. Figure 4 The housing 100 also includes a first support plate 181 and a second support plate 182. The first support plate 181 is disposed close to and opposite to the left panel 14, and the second support plate 182 is disposed close to and opposite to the right panel 15.

[0063] Specifically, the second support plate 182 is positioned close to and substantially parallel to the right panel 15, and is fixedly connected to the bottom panel 17, front panel 10, and rear panel 13. Similarly, the first support plate 181 is positioned close to and substantially parallel to the left panel 14, and the first support plate 181 and second support plate 182 are positioned substantially parallel. The first support plate 181 is fixedly connected to the bottom panel 17, front panel 10, and rear panel 13. This embodiment, by providing the first support plate 181 and the second support plate 182 within the housing 100, with the first support plate 181 positioned close to and opposite the left panel 14, and the second support plate 182 positioned close to and opposite the right panel 15, allows for the formation of multiple mounting surfaces within the housing 100. This increases the flexibility of component arrangement within the housing 100 and also enhances the strength of the housing 100.

[0064] In this embodiment of the application, the first opening 161 is used to allow the flexible screen module 600 of the display device 1000 to extend from the mounting cavity 110 of the housing 100 to be exposed to the outside of the housing 100, so that the user can view the image information displayed on the flexible screen module 600 exposed to the outside of the housing 100.

[0065] It should be noted that the position and shape of the first opening 161 in this application are not limited, as long as the inner wall of the first opening 161 does not interfere with the flexible screen module 600 when it passes through the first opening 161. For example, the first opening 161 is disposed on the top panel 16. The flexible screen module 600 extends from inside the housing 100 through the first opening 161 to be exposed outside the housing 100. The portion of the flexible screen module 600 exposed outside the housing 100 has a generally rectangular orthographic projection on the plane of the first opening 161, and correspondingly, the first opening 161 is also generally rectangular. The first opening 161 extends along the X-axis, and along the X-axis, the size of the first opening 161 is larger than the size of the flexible screen module 600 and the roller module 241. Along the Y-axis, the size of the first opening 161 is larger than the size of the flexible screen module 600 and the roller module 241.

[0066] In the embodiments of this application, please refer to Figure 5 , Figure 11 and Figure 12 The lifting component 222 is configured to move under the driving action of the driving component 221 to change its length in the lifting direction F. For example, the lifting component 222 has an extended state (e.g., Figure 5 and Figure 6 (as shown) and folded state ( Figure 12As shown, during the extension process of the lifting component 222 (e.g., when the lifting component 222 switches from a folded state to an unfolded state), the length of the lifting component 222 in the lifting direction F increases. During the folding process of the lifting component 222 (e.g., when the lifting component 222 switches from an unfolded state to a folded state), the length of the lifting component 222 in the lifting direction F decreases. The drive component 221 is connected to the lifting component 222 and configured to drive the lifting component 222 to move so that the lifting component switches between the extended state and the folded state.

[0067] In this embodiment, the support assembly 240 is connected to the lifting assembly 222, and the lifting assembly 222 is configured to drive the support assembly 240 to move up and down along the lifting direction F. The support assembly 240 includes a rotatable roller module 241. Thus, the roller module 241 can move up and down along the lifting direction F under the driving action of the lifting assembly 222. The flexible screen module 600 is supported on the roller module 241 and configured to move up and down together with the roller module 241 along the lifting direction F, thereby allowing the roller module 241 and the flexible screen module 600 to enter and exit the mounting cavity 110 through the first opening 161 along the lifting direction F.

[0068] Specifically, please refer to Figure 5 and Figure 6 The support component 240 is disposed at the top of the lifting component 222, and the support component 240 is rotatably connected to the lifting component 222. Exemplarily, when the flexible screen module 600 of this application is in operation, the roller module 241 and the flexible screen module 600 extend from the first opening 161 and protrude outside the housing 100 under the driving action of the lifting component 222. When the flexible screen module 600 of this application is not in operation, the lifting component 222 drives the support component 240 and the flexible screen module 600 to be housed within the mounting cavity 110 of the housing 100, thereby making the display device 1000 smaller and easier to carry.

[0069] In this application, a roller module 241 is provided in the support component 240. The roller module 241 is configured to move along the lifting direction under the driving action of the lifting component 222. Therefore, when the lifting mechanism 200 in this application is used for a display device, the roller module 241 can be used to support the flexible screen module 600, which helps to increase the contact area between the support component 240 and the flexible screen module 600, thus improving the supporting effect on the flexible screen module 600. Simultaneously, since the roller module 241 can rotate, the roller module 241 and the flexible screen module 600 roll contact, which helps to reduce the friction between them. Furthermore, when the flexible screen module 600 is supported on the roller module 241, portions of the flexible screen module 600 can be provided on both sides of the roller module 241, thereby enabling the display device in this application to achieve double-sided display and flexibly change the size of the display surface on each side of the roller module 241, making it suitable for more scenarios.

[0070] Please refer to some embodiments of this application. Figure 5 , Figure 13 and Figure 14 The lifting mechanism 200 also includes a base 210. Exemplarily, the base 210 is used to mount the drive assembly 221 and the lifting assembly 222. Of course, in some other embodiments of this application, the lifting mechanism 200 can also be directly connected to the housing 100, thus eliminating the need for a separate base.

[0071] In some embodiments of this application, the base 210 is fixed inside the mounting cavity 110 and disposed near the bottom panel 17. Exemplarily, the base 210 extends along the length direction (i.e., the X-axis direction) of the housing 100, and the two ends of the base 210 along the length direction (i.e., the X-axis direction) are respectively fixedly connected to the first support plate 181 and the second support plate 182.

[0072] Specifically, the base 210 includes a base bottom surface 211 and a pair of base side surfaces 212 connected to the base bottom surface 211. The pair of base side surfaces 212 are disposed on the side of the base bottom surface 211 opposite to the bottom panel 17 and are spaced apart along the width direction (i.e., the Y-axis direction) of the base bottom surface 211. The drive assembly 221 is mounted on the base bottom surface 211 and is located between the pair of base side surfaces 212.

[0073] Furthermore, a first clearance groove 2111 is provided on the bottom surface 211 of the base, which is used to avoid the slider 2214 in the drive assembly 221.

[0074] Furthermore, the bottom surface 211 of the base is provided with a wire hole 2112, which is used for power lines or signal lines to be routed.

[0075] Furthermore, a second clearance groove 2121 is provided on the side 212 of the base, which is used to avoid the drive motor 2212 in the drive assembly 221.

[0076] Furthermore, a limiting member 214 is provided on the base 210, which limits the travel of the slider in the drive assembly 221. Specifically, the limiting member 214 can be a limiting post or a limit switch.

[0077] Furthermore, the base 210 is generally a cuboid with one open side. The top surface of the base 210 (that is, the side of the base 210 facing away from the bottom panel 17) is open. The base 210 also includes a pair of connecting side surfaces 213. The pair of connecting side surfaces 213 are disposed at both ends of the base bottom surface 211 along its length. Each connecting side surface 213 is connected to the base bottom surface 211 on the same side and to a pair of base side surfaces 212. One of the pair of connecting side surfaces 213 is disposed opposite to the first support plate 181 and is fixedly connected to the first support plate 181. The other of the pair of connecting side surfaces 213 is disposed opposite to the second support plate 182 and is fixedly connected to the second support plate 182.

[0078] Further, please refer to Figure 5 The base 210 also includes a linkage seat 215. Specifically, the base 210 includes two linkage seats 215. A linkage seat 215 is provided at each end of the base 210 along its length, and each linkage seat 215 is fixedly connected to the bottom surface 211 and the connecting side surface 213 of the base, respectively. The linkage seat 215 is used to connect the lifting assembly 222.

[0079] Specifically, the connecting rod seat 215 includes a support limiting part 2152 and a base rotating connection part 2151 connected to each other. The base rotating connection part 2151 is disposed on the side of the support limiting part 2152 facing the lower connecting rod 2222, and is used for rotatably connecting with the connecting rod assembly. For example, the base rotating connection part 2151 is rotatably connected to the bottom end 22221 of the lower connecting rod. It should be noted that the specific implementation of the rotatable connection between the base rotating connection part 2151 and the bottom end 22221 of the lower connecting rod can be found in [reference needed]. Figure 19The method of rotatably connecting the top end 22222 of the lower connecting rod to the first locking piece 2224 is as follows: a bearing mounting hole is provided on each of the two sides of the bottom end 22221 of the lower connecting rod, and a matching rotating bearing is provided in each bearing mounting hole. The rotating connection part 2151 of the base includes a pair of bearing limiting pieces arranged opposite to each other along the width direction of the connecting rod seat 215. One of the bearing limiting pieces is integrally formed on the support limiting part 2152, and the other limiting piece (equivalent to the first locking piece 2224) is detachably connected to the support limiting part 2152 (e.g., threaded connection). The bottom end 22221 of the lower connecting rod and the two rotating bearings are clamped between the pair of bearing limiting pieces, and the bottom end 22221 of the lower connecting rod and the rotating connection part 2151 of the base are rotatably connected through the rotating bearings.

[0080] Specifically, the support and limiting part 2152 includes a fixed end and a limiting end disposed opposite to each other along the Z-axis direction. The fixed end is used to fix the support and limiting part 2152. For example, the fixed end is fixedly connected to the bottom surface 211 of the base and the connecting side surface 213, respectively. The limiting end is used to limit the rotation range of the lower connecting rod 2222, such as... Figure 4 and Figure 5 As shown, in the lower link 2222 (as Figure 5 When the lower connecting rod on the left side rotates counterclockwise to the vertical direction (or the angle between the extension direction of the lower connecting rod 2222 and the extension direction of the base 210 is 90 degrees), the limiting end limits the lower connecting rod 2222 to continue rotating counterclockwise. This helps to improve the stability of the lifting mechanism 200 in this embodiment.

[0081] For example, along the Z-axis direction, the base rotation connection 2151 is disposed near the center of the support limiting part 2152.

[0082] It should be noted that the lifting mechanism 200 in this embodiment may include one or more lifting components 222. For example, when the lifting mechanism 200 includes only one lifting component 222, the lifting component 222 is positioned near the center of the roller module. When the lifting mechanism 200 includes multiple lifting components 222, the multiple lifting components 222 are spaced apart along the extension direction (e.g., the X-axis direction) of the roller module 241. For example, the lifting mechanism 200 includes two lifting components 222, with one lifting component 222 at each end of the length direction (e.g., the X-axis direction) of the roller module 241. This improves the stability of the roller module 241 during the extension process.

[0083] It should be noted that the structures of the multiple lifting components 222 can be the same or different, and no limitation is made here. In order to reduce manufacturing costs and facilitate automated control, the two lifting components 222 are arranged symmetrically.

[0084] In some embodiments of this application, the lifting component 222 has an extended state and a folded state. Along the lifting direction (e.g., the Z-axis direction) of the lifting component 222, the length of the lifting component 222 in the extended state is greater than the length of the lifting component 222 in the folded state. Exemplarily, during the movement of the lifting component 222 from the extended state to the folded state (or during the folding process of the lifting component 222), the length of the lifting component 222 gradually decreases along the Z-axis direction; during the movement of the lifting component 222 from the folded state to the extended state (or during the extension process of the lifting component 222), the length of the lifting component 222 gradually increases along the Z-axis direction.

[0085] Specifically, during the process of the drive assembly 221 driving the lifting assembly 222 to switch from an extended state to a folded state, the length of the lifting assembly 222 in the Z-axis direction shortens; during the process of the drive assembly 221 driving the lifting assembly 222 to switch from a folded state to an unfolded state, the length of the lifting assembly 222 in the Z-axis direction increases. It can be understood that, since the support assembly 240 is fixed to the lifting assembly 222, during the process of the lifting assembly 222 switching from an extended state to a folded state, the length of the lifting assembly 222 in the Z-axis direction decreases, thereby causing the support assembly 240 to descend along the Z-axis direction. Correspondingly, the roller module 241 and the flexible screen module 600 on the roller module 241 also descend, allowing the flexible screen module 600 to be received in the mounting cavity 110 through the first opening 161 along the Z-axis direction.

[0086] Similarly, during the transition from a folded to an extended state, the dimension of the lifting assembly 222 increases along the Z-axis, and the support assembly 240 on the lifting assembly 222 also rises. Correspondingly, the roller module 241 and the flexible screen module 600 on the roller module 241 also rise, thereby exposing the flexible screen module 600 to the outside of the housing 100 through the first opening 161 along the Z-axis. For ease of understanding, the specific structure of the lifting assembly 222 will be further explained below.

[0087] In some embodiments of this application, the lifting assembly 222 includes a linkage assembly, which is rotatably connected to the support assembly 240. Using a linkage assembly as the lifting assembly in this embodiment helps to reduce the thickness of the display device 1000 (i.e., the dimension of the display device 1000 along the Y-axis) in this application.

[0088] Please refer to some embodiments of this application. Figure 5 and Figure 6The lifting assembly 222 includes a lower connecting rod 2222 and an upper connecting rod 2223. The upper connecting rod 2223 is rotatably connected to the lower connecting rod 2222 and the support assembly 240, respectively. Exemplarily, the drive assembly 221 is drivably connected to the lower connecting rod 2222, and the drive assembly 221 drives the lower connecting rod 2222 and the upper connecting rod 2223 to rotate relative to each other to change their lengths in the lifting direction. This simplifies the structure of the lifting assembly 222.

[0089] Specifically, please combine Figures 15 to 21 Along the length of the lower connecting rod 2222, the lower connecting rod 2222 has a lower connecting rod bottom end 22221 and a lower connecting rod top end 22222 oppositely disposed. Along the length of the upper connecting rod 2223, the upper connecting rod 2223 has an upper connecting rod bottom end 22231 and an upper connecting rod top end 22233 oppositely disposed. The lower connecting rod bottom end 22221 is rotatably connected to the base 210 (exemplarily, the lower connecting rod bottom end 22221 is rotatably connected to the connecting rod seat 215). The lower connecting rod top end 22222 is rotatably connected to the upper connecting rod bottom end 22231. The upper connecting rod top end 22233 is rotatably connected to the support assembly 240.

[0090] For example, when the drive assembly 221 drives the bottom end 22221 of the lower link and the top end 22233 of the upper link to rotate towards each other, the distance between the bottom end 22221 and the top end 22233 of the upper link decreases along the Z-axis, the length of the lifting assembly 222 in the Z-axis direction decreases, and the support assembly 240 descends along the Z-axis direction. When the drive assembly 221 drives the bottom end 22221 of the lower link and the top end 22233 of the upper link to rotate away from each other, the distance between the bottom end 22221 and the top end 22233 of the upper link increases along the Z-axis direction, the length of the lifting assembly 222 in the Z-axis direction increases, and the support assembly 240 rises along the Z-axis direction.

[0091] Please refer to some embodiments of this application. Figure 5 , Figure 22 and Figure 23 The lifting mechanism 200 also includes a transmission link 223. Along the length of the lower link 2222, the lower link 2222 has a lower link bottom end 22221 and a lower link top end 22222 oppositely disposed. Along the length of the upper link 2223, the upper link 2223 has an upper link bottom end 22231 and an upper link top end 22233 oppositely disposed. The lower link top end 22222 and the upper link bottom end 22231 are rotatably connected, and the lower link bottom end 22221 is rotatably connected to the base 210; both ends of the transmission link 223 are rotatably connected to the drive assembly 221 and the link assembly, respectively; wherein the rotation surfaces of the transmission link 223, the lower link 2222, and the upper link 2223 are coplanar.

[0092] In this embodiment, the bottom end 22221 of the lower connecting rod is rotatably connected to the base 210, and the top end 22222 of the lower connecting rod is rotatably connected to the bottom end 22231 of the upper connecting rod. The top end 22233 of the upper connecting rod and the bottom end 22221 of the lower connecting rod are configured to rotate towards each other to switch the connecting rod assembly to a folded state, and the top end 22233 of the upper connecting rod and the bottom end 22221 of the lower connecting rod are configured to rotate towards each other to switch the connecting rod assembly to an extended state. The two ends of the transmission connecting rod 223 are rotatably connected to the drive assembly 221 and the connecting rod assembly, respectively. The rotation surfaces of the transmission connecting rod 223, the lower connecting rod 2222, and the upper connecting rod 2223 are coplanar, thereby reducing the size of the lifting mechanism 200 in this application in the direction perpendicular to the rotation surface, which is beneficial to reducing the size of the display device having the lifting mechanism 200.

[0093] Specifically, one end of the transmission link 223 (e.g., the first rotating end 2231) is rotatably connected to the drive assembly 221 (e.g., the slider 2214), and the other end of the transmission link 223 (e.g., the second rotating end 2232) is rotatably connected to the lifting assembly 222. Exemplarily, the lower link 2222 further includes a link drive portion 22223 disposed between the bottom end 22221 and the top end 22222 of the lower link. The second rotating end 2232 of the transmission link 223 is driveably connected to the link drive portion 22223.

[0094] Furthermore, a connecting groove 22223a is provided on the inner side of the linkage drive unit 22223 (that is, the side of the lower linkage 2222 facing the transmission linkage 223). The end of the transmission linkage 223 facing away from the drive assembly 221 is rotatably disposed in the connecting groove 22223a. This helps to reduce the size of the linkage assembly in the Y-axis direction and improve the structural compactness of the display device 1000.

[0095] Exemplarily, the connecting groove 22223a includes a guide bottom surface 22223b, a first limiting surface 22223c, and a second limiting surface 22223d. Along the length of the lower connecting rod 2222, the first limiting surface 22223c and the second limiting surface 22223d are located at opposite ends of the guide bottom surface 22223b, respectively. The first limiting surface 22223c and the second limiting surface 22223d are used to limit the angle range between the transmission connecting rod 223 and the lower connecting rod 2222 (or to limit the rotation angle range of the transmission connecting rod 223 within the rotational plane). This improves the stability of the connecting rod assembly in this embodiment.

[0096] For example, the guide bottom surface 22223b is arc-shaped, and the first limiting surface 22223c and the second limiting surface 22223d are planar. When the linkage assembly extends in the vertical direction, the transmission link 223 drives the lower link 2222 to rotate in the clockwise direction, and the size of the linkage assembly in the Z-axis direction increases. When the transmission link 223 drives the lower link 2222 to rotate in the clockwise direction to the Z-axis direction (that is, the lower link 2222 rotates in the clockwise direction to the maximum angle), the size of the linkage assembly in the Z-axis direction reaches its maximum. The first limiting surface 22223c abuts against the side of the transmission link 223 facing the base 210, thereby limiting the relative rotation of the lower link 2222 and the transmission link 223. The transmission link 223 no longer drives the lower link 2222 to continue rotating in the clockwise direction. During the folding process of the linkage assembly, when the transmission link 223 drives the lower link 2222 to rotate counterclockwise to the horizontal direction or at a small angle to the horizontal direction, the second limiting surface 22223d abuts against the side of the transmission link 223 away from the base 210, thereby limiting the relative rotation of the lower link 2222 and the transmission link 223. The transmission link 223 no longer drives the lower link 2222 to continue rotating counterclockwise (i.e., the lower link rotates to its lowest position). It should be noted that when the lower link 2222 rotates to its lowest position, the angle between the transmission link 223 and the horizontal direction can be set according to specific circumstances. If the angle between the transmission link 223 and the horizontal direction is small, the drive assembly needs to provide a larger driving force when driving the lower link to rotate through the transmission link, and correspondingly, the drive motor in the configured drive assembly is larger. If the angle between the transmission link 223 and the horizontal direction is large, the driving force of the drive assembly is smaller, and correspondingly, a smaller drive motor can be used. If the angle between the transmission link 223 and the horizontal direction is large, the driving force of the drive component is small, which is conducive to further improving the structural compactness and control accuracy of the structural lifting mechanism 200.

[0097] Furthermore, along the width direction of the lower connecting rod 2222, side limiting portions 22223e and second locking pieces 2226 are provided on opposite sides of the guide bottom surface 22223b. The side limiting portions 22223e and the second locking pieces 2226 are used to limit the transmission connecting rod 223 on both sides of its width direction (i.e., on both sides of its rotational surface). This helps to improve the control accuracy when the transmission connecting rod 223 and the lower connecting rod 2222 rotate relative to each other.

[0098] For example, a second locking plate mounting groove 22223f is provided on the surface of the lower connecting rod 2222 opposite to the side limiting part 22223e. A second locking plate 2226 is fixed in the second locking plate mounting groove 22223f. One end of the transmission connecting rod 223 is located between the side limiting part 22223e and the second locking plate 2226, and is rotatably connected to the side limiting part 22223e and the second locking plate 2226 respectively. Further, the guide bottom surface 22223b is rotatably engaged with the end face of the transmission connecting rod 223.

[0099] In some embodiments of this application, the lower connecting rod 2222 is provided with a lower engaging portion 22222d, and the upper connecting rod 2223 is provided with an upper engaging portion 22231d. The lower engaging portion 22222d and the upper engaging portion 22231d engage with each other. By setting the lower engaging portion 22222d and the upper engaging portion 22231d to engage with each other, this embodiment facilitates the synchronous rotation of the upper connecting rod 2223 and the lower connecting rod 2222, and precisely controls the rotation angle between the lower connecting rod 2222 and the upper connecting rod 2223. This, in turn, allows for precise control of the length of the lifting assembly 222 along the lifting direction and the size of the flexible screen module 600 extending beyond the display device.

[0100] Specifically, the top end 22222 of the lower connecting rod (i.e., the end of the lower connecting rod 2222 away from the base 210) is provided with a third guide surface 22222a and a second pivot portion 22222c extending from the third guide surface 22222a toward the upper connecting rod 2223. The first locking piece 2224 has a second mating end near the lower connecting rod 2222, and the second mating end has a fourth guide surface 22241 and a second rotating connecting portion 22246 near the fourth guide surface 22241. The second rotating connecting portion 22246 is rotatably connected to the second pivot portion 22222c. The third guide surface 22222a and the fourth guide surface 22241 are directly opposite each other and rotatably engaged.

[0101] Furthermore, the second pivot portion 22222c is positioned near the center of the third guide surface 22222a. A bearing mounting cavity 22222e is provided on each of the left and right sides of the second pivot portion 22222c. A first bearing 2241 and a second bearing 2242 are positioned opposite each other on both sides of the second pivot portion 22222c, each located within its corresponding bearing mounting cavity 22222e. A first locking piece 2224 is provided on the side of the first bearing 2241 facing away from the bearing mounting cavity 22222e, and the same is true for the second bearing 2242. In this embodiment, by providing a bearing seat on each of the left and right sides of the second pivot portion 22222c, the accuracy of the lower connecting rod 2222 during rotation is improved, thereby mitigating the wobble problem of the lower connecting rod 2222 during rotation and reducing the resistance of the lower connecting rod 2222 during rotation.

[0102] Specifically, the rotating pin 225 passes through mounting holes on a pair of first locking plates 2224, a first bearing 2241, a second bearing 2242, and a second pivot portion 22222c, and is fixedly connected to the locking screw 226. The inner side of the first bearing 2241 (i.e., the side of the first bearing 2241 facing away from the first locking plate 2224) and the inner side of the second bearing 2242 (i.e., the side of the second bearing 2242 facing away from the first locking plate 2224) are respectively press-fitted with the second pivot portion 22222c. The inner side of the first bearing 2241 (i.e., the side of the first bearing 2241 close to the first locking plate 2224) is clearance-fitted with the first locking plate 2224 on the same side. The outer side of the second bearing 2242 (the side of the second bearing 2242 facing away from the first locking plate 2224) is clearance-fitted with the first locking plate 2224 on the same side. This structural design helps improve the accuracy of the lower connecting rod 2222 during rotation, thereby improving the problem of swaying of the lower connecting rod 2222 during rotation and reducing the resistance of the lower connecting rod 2222 during rotation.

[0103] Furthermore, the top end 22222 of the lower connecting rod is also provided with a first rotation limiting surface 22222b, and the second mating end is also provided with a locking plate lower abutment surface 22242 that mates with the first rotation limiting surface 22222b. For example, the first rotation limiting surface 22222b is disposed on one side (e.g., the right side) of the third guide surface 22222a, and the first rotation limiting surface 22222b is generally horizontal. Correspondingly, the locking plate lower abutment surface 22242 is also horizontal.

[0104] When the included angle between the lower connecting rod 2222 and the upper connecting rod 2223 rotates to a preset maximum value (for example, when the included angle between the lower connecting rod 2222 and the upper connecting rod 2223 rotates to approximately 180° or when the extension direction of the lower connecting rod 2222 and the extension direction of the upper connecting rod 2223 are largely coincident), the first rotation limiting surface 22222b and the lower abutting surface 22242 of the locking piece face each other and abut against each other to limit the continued rotation of the lower connecting rod 2222 and the upper connecting rod 2223.

[0105] Specifically, the bottom end 22231 of the upper connecting rod is provided with a first guide surface 22231a and a first pivot portion 22231c extending from the first guide surface 22231a toward the lower connecting rod 2222. The first locking piece 2224 is provided with a first mating end near the end of the upper connecting rod 2223, and the first mating end is provided with a first rotating connection portion 22245 and a second guide surface 22243; the first rotating connection portion 22245 is rotatably connected to the first pivot portion 22231c, and the first guide surface 22231a and the second guide surface 22243 cooperate to limit the rotation surface of the upper connecting rod 2223.

[0106] Furthermore, the bottom end 22231 of the upper connecting rod is also provided with a second rotation limiting surface 22231b, and the first mating end is provided with a locking plate abutting surface 22244 that mates with the second rotation limiting surface 22231b. The first guide surface 22231a is arc-shaped, and the first guide surface 22231a and the second guide surface 22243 are directly opposite each other. The first guide surface 22231a and the second guide surface 22243 are rotatably mated, so that the first locking plate 2224 and the upper connecting rod 2223 can rotate relative to each other. The second rotation limiting surface 22231b cooperates with the abutting surface 22244 on the locking plate to prevent the first locking plate 2224 and the upper connecting rod 2223 from rotating relative to each other. For example, the second rotation limiting surface 22231b is a plane, and the abutting surface 22244 on the locking plate is also a plane. When the upper connecting rod 2223 and the first locking plate 2224 rotate along the preset rotation direction until the second rotation limiting surface 22231b and the abutting surface 22244 on the locking plate are facing each other and abutting, the upper connecting rod 2223 and the first locking plate 2224 rotate to the maximum angle along the preset direction. At this time, the upper connecting rod 2223 and the first locking plate 2224 can no longer continue to rotate along the preset direction. The upper connecting rod 2223 and the first locking plate 2224 can only rotate in the opposite direction to the preset direction.

[0107] Specifically, the bottom end 22231 of the upper connecting rod is provided with a first pivot portion 22231c. Exemplarily, the first pivot portion 22231c extends from the first guide surface 22231a toward the lower connecting rod 2222. One end of the first pivot portion 22231c facing the lower connecting rod 2222 is provided with an upper engagement portion 22231d. The upper engagement portion 22231d is used to cooperate with the lower engagement portion 2222d to enable the lower connecting rod 2222 and the lower connecting rod 2222 to rotate relative to each other, and to precisely control the included angle between the lower connecting rod 2222 and the lower connecting rod 2222, thereby precisely controlling the distance that the lifting assembly 222 extends along a preset direction. Exemplarily, the first pivot portion 22231c is located on the first guide surface 22231a and is set close to the center of the width direction (i.e., the Y-axis direction) of the first guide surface 22231a.

[0108] Specifically, the lower connecting rod 2222 is also provided with a material reduction groove 22225. This structural design helps to reduce the amount of raw materials used in the production of the lower connecting rod 2222.

[0109] In some embodiments of this application, the lifting assembly 222 includes a first locking piece 2224, which is rotatably connected to the lower connecting rod 2222 and the bottom end 2223 of the upper connecting rod, respectively. Specifically, the first locking piece 2224 is rotatably connected to the top end 22222 of the lower connecting rod and the bottom end 22231 of the upper connecting rod, respectively.

[0110] Specifically, there are two first locking pieces 2224, which are located on both sides of the thickness direction (i.e., the Y-axis direction) of the first pivot portion 22231c (or the second pivot portion 22222c).

[0111] Specifically, the top end 22233 of the upper connecting rod includes a first upper connecting rod top surface 22233a and a second upper connecting rod top surface 22233b arranged in a stepped manner, and an upper connecting rod connecting surface 22233c connecting the first upper connecting rod top surface 22233a and the second upper connecting rod top surface 22233b. Along the extension direction of the upper connecting rod 2223, the second upper connecting rod top surface 22233b is disposed on the side of the first upper connecting rod top surface 22233a away from the bottom end 22231 of the upper connecting rod. The top end 22233 of the upper connecting rod also includes a fourth pivot portion 22233d, which is disposed on the side of the second upper connecting rod top surface 22233b away from the bottom end 22231 of the upper connecting rod. The fourth pivot portion 22233d is used for rotatable connection with the support assembly 240 (e.g., the crossbar 242 of the support assembly 240).

[0112] Specifically, the top surface 22233a and the connecting surface 22233c of the first upper connecting rod enclose a third locking plate mounting groove 22233e, and a third locking plate 2225 is installed in the third locking plate mounting groove 22233e. The third locking plate 2225 located in the third locking plate mounting groove 22233e is disposed opposite to the fourth pivot portion 22233d, and a crossbar mounting groove 22233f is formed between the third locking plate 2225 (the end of the third locking plate 2225 facing the crossbar 242) and the fourth pivot portion 22233d. One end of the crossbar 242 is rotatably disposed in the crossbar mounting groove 22233f, that is, the crossbar 242 and the upper connecting rod 2223 can rotate relative to each other.

[0113] Specifically, the upper connecting rod 2223 is provided with an upper connecting rod clearance groove 22236, which is used to avoid the lower connecting rod 2222 when the upper connecting rod 2223 and the lower connecting rod 2222 are close to each other. This structural arrangement helps to improve the structural compactness of the display device 1000.

[0114] Specifically, the upper connecting rod 2223 is provided with an upper connecting rod reducing groove 22237. This structural design helps to reduce the amount of raw materials used in the production of the upper connecting rod 2223.

[0115] In some embodiments of this application, the lifting connection portion 2423 is disposed on the side of the body 2421 facing the lifting assembly 222. This helps to avoid interference between the connection between the body 2421 and the lifting assembly 222 and the roller module 241, thereby improving the structural compactness of the display device.

[0116] In some embodiments of this application, the sensor 230 is disposed on the crossbar 242 and located between the lifting connection portion 2423 and any of the lugs 2422. Specifically, there are two lifting connection portions 2423, each disposed near the lug 2422 at the same end, and each lifting connection portion 2423 is rotatably connected to the lifting assembly 222. The sensor 230 is disposed between the lifting connection portion 2423 and the lug 2422 at the same end, and the sensor 230 is a bridge strain gauge. Thus, the portion of the crossbar 242 located between the lifting connection portion 2423 and the lug 2422 at the same end forms a cantilever beam structure, and the bridge strain gauge is fixed (e.g., bonded) to the middle position of the cantilever beam structure. According to the general principle of cantilever beam pressure measurement, the strain gauge can detect the mechanical deformation of the cantilever beam and convert it into the pressure on the cantilever beam (i.e., the end of the crossbar 242).

[0117] As is understandable, a bridge strain gauge (or strain meter) is a sensor used to measure the deformation of an object's surface. Its working principle is based on the resistance strain effect. When the strain gauge is stretched or compressed, its resistance changes. A bridge strain gauge typically consists of four strain gauges connected in a Wheatstone bridge configuration, as follows: Figure 25 As shown. The balanced state of the Wheatstone bridge allows for precise measurement of minute deformations. The principle of the full-bridge strain gauge is not elaborated here; this structure outputs the relationship between the deformation of the cantilever beam and the Wheatstone bridge voltage, which can then be converted into the pressure exerted on the cantilever beam through fitting and calibration. Based on the principle that forces act in pairs, the pressure on the cantilever beam is approximately equal to the tensile force on the flexible screen 610.

[0118] In some embodiments of this application, the body 2421 and the pair of lugs 2422 are integrally formed. This is beneficial to improving the structural strength of the crossbar 242.

[0119] In some embodiments of this application, the lifting assembly 222 includes two linkage assemblies, each corresponding to one of the two lifting connection portions 2423. Each linkage assembly includes a lower linkage 2222 and an upper linkage 2223 rotatably connected. The end of the lower linkage 2222 opposite to the upper linkage 2223 is rotatably connected to a linkage seat 215, and the end of the upper linkage 2223 opposite to the lower linkage 2222 is rotatably connected to the lifting connection portion 2423. This improves the stability and structural compactness of the lifting assembly 222.

[0120] Please refer to some embodiments of this application. Figure 23 and Figure 22 Along the length of the transmission link 223, the transmission link 223 includes a first rotating end 2231 and a second rotating end 2232 disposed opposite to each other. The first rotating end 2231 is used to be rotatably connected to the drive assembly 221, and the second rotating end 2232 is used to be rotatably connected to the lower link 2222.

[0121] Specifically, the transmission link 223 further includes a connecting portion located between the first rotating end 2231 and the second rotating end 2232, connecting the first rotating end 2231 and the second rotating end 2232. The connecting portion includes a third surface 2233 and a fourth surface 2234 disposed opposite to each other. When the link assembly is in the folded state, the third surface 2233 abuts against the second limiting surface 22223d. Exemplarily, both the third surface 2233 and the second limiting surface 22223d are planar. When the link assembly is in the extended state, the fourth surface 2234 abuts against the first limiting surface 22223c. Exemplarily, both the fourth surface 2234 and the first limiting surface 22223c are planar. The third surface 2233 and the fourth surface 2234 are disposed near the second rotating end 2232.

[0122] Specifically, the first rotating end 2231 includes a first surface 2231c and a second surface 2231d disposed opposite to each other. The first surface 2231c is disposed on the same side as the third surface 2233, and the second surface 2231d is disposed on the same side as the fourth surface 2234.

[0123] Specifically, the first rotating end 2231 further includes a pair of third pivot portions 2231a, with a third clearance groove 2231b between the pair of third pivot portions 2231a. The third clearance groove 2231b is used to avoid the drive assembly 221. This helps to reduce the volume of the lifting mechanism 200 in the folded state and improve the structural compactness of the lifting mechanism. For example, the first rotating end 2231 also includes a connecting side that connects the first surface 2231c and the second surface 2231d. The connecting side is located on the side of the first rotating end 2231 away from the second rotating end 2232, and the pair of third pivot portions 2231a are disposed on the connecting side away from the second rotating end 2232. The third clearance groove 2231b connects the first surface 2231c and the second surface 2231d. The second surface 2231d is disposed facing the drive assembly 221, and the length of the third clearance groove 2231b on the second surface 2231d is greater than the length of the third clearance groove 2231b on the first surface 2231c.

[0124] Specifically, the second rotating end 2232 includes a sleeve portion 2232a, which is rotatably connected to the lower connecting rod 2222. Exemplarily, the second rotating end 2232 also includes a partition plate 2232d, which is disposed within the sleeve portion 2232a and fixedly connected to the inner wall of the sleeve portion 2232a. The partition plate 2232d and the sleeve portion 2232a are arranged substantially perpendicularly. A bearing mounting hole 2232b is formed within the sleeve portion 2232a and on both sides of the partition plate 2232d. Each bearing mounting hole 2232b contains a bearing, and the second rotating end 2232 is rotatably connected to the lower connecting rod 2222 via a pair of bearings. For example, along the length of the sleeve portion 2232a, the partition plate 2232d is disposed near the middle of the sleeve portion 2232a, thereby forming a bearing mounting hole 2232b on each side of the partition plate 2232d within the sleeve portion 2232a. Each bearing is positioned between the partition plate 2232d and the side limiting portion 22223e or the second locking plate. The partition plate 2232d is also provided with a pin hole 2232c, through which a pin passes simultaneously through the side limiting portion 22223e, the two bearings, the pin hole 2232c, and the second locking plate, thereby achieving a rotatable connection between the second rotating end 2232 and the lower connecting rod 2222. This embodiment improves the control accuracy of the transmission connecting rod 223 and the lower connecting rod 2222 during rotation and reduces rotational resistance by providing a bearing on each of the left and right sides of the second rotating end 2232 and limiting the corresponding bearings through the side limiting portion 22223e and the second locking plate.

[0125] Please refer to some embodiments of this application. Figure 24 The drive assembly 221 includes a lead screw 2213 and a slider 2214 disposed on the lead screw 2213. The slider 2214 is configured to reciprocate along the extension direction of the lead screw 2213. The slider 2214 is connected to the lifting assembly 222 and is configured to drive the lifting assembly 222 to move along the lifting direction.

[0126] Specifically, the drive assembly 221 includes a motor 2212, a lead screw 2213, and a slider 2214. The output end of the motor 2212 is connected to the lead screw 2213 for driving the lead screw 2213 to rotate in a preset direction. The slider 2214 is mounted on the lead screw 2213 and can move along the extension direction of the lead screw 2213 when the lead screw 2213 rotates. The slider is driven by the transmission link 223. It should be noted that the specific structure of the drive assembly 221 is not a major improvement of this application and is not limited thereto.

[0127] Specifically, the lead screw 2213 extends along the length of the housing 100, and the motor 2212 is located on the side of the lead screw 2213 away from the lifting assembly 222. During operation, when the motor 2212 drives the lead screw 2213 to rotate clockwise, the slider 2214 moves along the lead screw 2213 in a direction away from the motor 2212. During this process, the slider 2214 applies a pushing force to the lifting assembly 222 to unfold it. When the motor 2212 drives the lead screw 2213 to rotate counterclockwise, the slider 2214 moves along the lead screw 2213 in a direction closer to the motor 2212. During this process, the slider 2214 applies a pulling force to the lifting assembly 222 to fold it.

[0128] When the slider 2214 applies a pulling force to the lower connecting rod 2222 via the connecting rod drive unit 22223, the top end 22222 of the lower connecting rod rotates toward the base 210. During this process, the angle between the lower connecting rod 2222 and the base 210 gradually decreases, and the angle between the lower connecting rod 2222 and the upper connecting rod 2223 gradually decreases until the angle between the lower connecting rod 2222 and the base 210 reaches a preset minimum value, for example, the minimum angle between the lower connecting rod 2222 and the base 210 is 5°. At this time, the angle between the extension direction of the lower connecting rod 2222 and the extension direction of the upper connecting rod 2223 is the minimum, and the roller module 241 is received and placed in the housing 100 through the first opening.

[0129] To prevent dust from entering the interior of the housing 100 through the first opening, the display device 1000 of this application also includes a dustproof plate mechanism for opening or closing the first opening on the housing 100. It should be noted that the dustproof plate mechanism is not a major improvement of this application and will not be described in detail here.

[0130] In some embodiments of this application, the control module is electrically connected to the sensor 230 and the drive assembly 221, respectively. The control module is configured to control the drive speed of the drive assembly 221 based on the pressure value obtained by the sensor 230. Specifically, the display device 1000 further includes a screen take-up roller module 400; the flexible screen module 600 further includes a screen fixing member 620; the screen take-up roller module 400 and the screen fixing member 620 are disposed within the housing 100; the flexible screen 610 has a first fixing part and a second fixing part disposed along its length direction, the first fixing part being connected to the screen take-up roller module 400, and the second fixing part being connected to the screen fixing member 620; the portion of the flexible screen 610 located between the first fixing part and the second fixing part is tensioned on the roller module 241; the control module is also electrically connected to the screen take-up roller module 400, and the control module is configured to control the operation of the drive assembly 221 and the screen take-up roller module 400 based on the pressure value obtained by the sensor 230. In this way, the control module can adjust the running speed of the drive component 221 and the screen take-up roller module 400 according to the obtained tension or pressure value, so that the speed at which the screen take-up roller module 400 releases the flexible screen 610 is consistent with the speed at which the drive component 221 drives the flexible screen 610 to rise, further improving the problem of the flexible screen 610 being pulled and damaged during the rising or falling process.

[0131] Specifically, taking the unfolding process of the flexible screen 610 as an example, after the sensor 230 obtains the real-time pressure value of the flexible screen 610, it sends it to the control module. The control module receives the pressure value sent by the sensor 230 and compares it with the preset threshold of the flexible screen 610. If the real-time pressure value is greater than the threshold, the speed of the drive motor 2212 of the drive component 221 can be reduced and / or the speed at which the screen take-up roller module 400 releases the flexible screen 610 can be increased, thereby reducing the interaction force between the roller module 241 and the flexible screen 610. If the real-time pressure value is less than the threshold, the speed of the drive motor 2212 of the drive component 221 can be appropriately increased and / or the speed at which the screen take-up roller module 400 releases the flexible screen 610 can be reduced, thereby increasing the interaction force between the roller module 241 and the flexible screen 610.

[0132] In some embodiments of this application, the control module includes a PI controller configured to control the operating speed of the drive assembly 221 and the screen take-up roller module 400 based on the difference between the pressure value (i.e., the real-time pressure value) and the target tension (i.e., the threshold). Specifically, the control module includes a PI controller, the working principle of which is as follows: Figure 26As shown, the PI controller adjusts the speed of the lifting drive motor and the drive motor of the screen winding roller module in real time based on the magnitude of the tension on the flexible screen. This allows for controllable tension of the flexible screen during lifting and lowering, and also controls the tightness of the screen surface during the lifting process, resulting in a better visual experience and a smoother lifting effect. The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is merely an example and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore, such modifications, improvements, and corrections still fall within the spirit and scope of the exemplary embodiments of this application.

[0133] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0134] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments of the invention, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0135] In some embodiments, numbers describing the quantity of components and attributes are used. It should be understood that such numbers used in the description of embodiments are modified in some examples with the terms "approximately," "approximately," or "generally." Unless otherwise stated, "approximately," "approximately," or "generally" indicates that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may be changed depending on the characteristics required by individual embodiments. In some embodiments, numerical parameters should take into account specified significant digits and employ a general method of digit reservation. Although the numerical ranges and parameters used to confirm their breadth of range in some embodiments of this application are approximate values, in specific embodiments, such numerical values ​​are set as precisely as feasible.

[0136] For each patent, patent application, patent application publication, and other material such as articles, books, specifications, publications, and documents referenced in this application, the entire contents of that patent application are incorporated herein by reference, except for historical application documents that are inconsistent with or conflict with the content of this application, and documents that limit the broadest scope of the claims of this application (currently or subsequently appended to this application). It should be noted that if there are any inconsistencies or conflicts between the descriptions, definitions, and / or terminology used in the supplementary materials of this application and the content of this application, the descriptions, definitions, and / or terminology used in this application shall prevail.

[0137] The above provides a detailed description of a lifting mechanism and a display device having the lifting mechanism provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A lifting mechanism (200) for supporting a flexible screen module (600), the flexible screen module (600) comprising a flexible screen (610), characterized in that, The lifting mechanism (200) includes a drive assembly (221), a lifting assembly (222), a support assembly (240), and a sensor (230); The support assembly (240) includes a roller module (241) and a crossbar (242), wherein the roller module (241) is rotatably connected to the crossbar (242); the roller module (241) is used to support the flexible screen (610); and the crossbar (242) is connected to the lifting assembly (222). The drive assembly (221) is connected to the lifting assembly (222), and the drive assembly (221) is configured to drive the lifting assembly (222) and the support assembly (240) to move in the lifting direction; The sensor (230) is disposed on the flexible screen (610) and / or the support component (240) for obtaining the tensile force value of the flexible screen (610) or the pressure value of the support component (240).

2. The lifting mechanism (200) as described in claim 1, characterized in that, The crossbar (242) includes a body (2421) and a pair of lugs (2422). The pair of lugs (2422) are disposed opposite to each other at both ends of the body (2421) along its length and are located on the side of the body (2421) away from the lifting assembly (222). The roller module (241) is rotatably connected to the pair of lugs (2422). and / or The crossbar (242) includes a body (2421) and a pair of lugs (2422). The pair of lugs (2422) are disposed opposite to each other at both ends of the body (2421) along the length direction and are used to rotatably connect with the roller module (241). The body (2421) and the pair of lugs (2422) are integrally formed structures.

3. The lifting mechanism (200) as described in claim 2, characterized in that, The main body (2421) is provided with a lifting connection part (2423), which is located between the pair of lugs (2422) and is connected to the lifting assembly (222).

4. The lifting mechanism (200) as described in claim 3, characterized in that, The sensor (230) is disposed on the body (2421) and located between the lifting connection (2423) and any of the lugs (2422); and / or The lifting connection part (2423) is disposed on the side of the main body (2421) facing the lifting assembly (222); and / or There are two lifting connection parts (2423), each of which is located near the lug (2422) at the same end. The part of the body (2421) between the lifting connection part (2423) and the adjacent lug (2422) forms a cantilever beam structure. The sensor (230) is disposed on the cantilever beam structure and is a bridge strain gauge.

5. The lifting mechanism (200) as described in claim 1, characterized in that, The lifting assembly (222) includes two linkage assemblies, which are respectively connected to the crossbar (242). The linkage assembly includes a lower linkage (2222) and an upper linkage (2223) that are rotatably connected. The end of the lower linkage (2222) away from the upper linkage (2223) is rotatably connected to the linkage seat (215), and the end of the upper linkage (2223) away from the lower linkage (2222) is rotatably connected to the crossbar (242).

6. The lifting mechanism (200) as described in claim 5, characterized in that, Along the extending direction of the lower connecting rod (2222), the lower connecting rod (2222) includes a lower connecting rod bottom end (22221) and a lower connecting rod top end (22222) disposed opposite to each other; along the extending direction of the upper connecting rod (2223), the upper connecting rod (2223) includes an upper connecting rod bottom end (22231) and an upper connecting rod top end (22233) disposed opposite to each other, the lower connecting rod top end (22222) and the upper connecting rod bottom end (22231) are rotatably connected, the lower connecting rod bottom end (22221) is rotatably connected to the connecting rod seat (215); the upper connecting rod top end (22233) is rotatably connected to the crossbar (242), the driving assembly (221) is rotatably connected to the lower connecting rod (2222), the driving assembly (221) drives the lower connecting rod (2222) to rotate and drives the upper connecting rod (2223) to rotate.

7. The lifting mechanism (200) as described in claim 5, characterized in that, The lifting mechanism (200) further includes two transmission links (223) and two drive components (221), with each transmission link (223) having its two ends rotatably connected to one drive component (221) and one lower link (2222), respectively; wherein the rotation surfaces of the transmission link (223), the lower link (2222), and the upper link (2223) are coplanar.

8. A display device (1000), characterized in that, The display device (1000) includes a flexible screen module (600), a control module, and a lifting mechanism (200) as described in any one of claims 1 to 7; the control module is electrically connected to the sensor (230) and the drive assembly (221) respectively, and the control module is configured to control the driving speed of the drive assembly (221) according to the tension value or pressure value obtained by the sensor (230).

9. The display device (1000) as claimed in claim 8, characterized in that, The display device (1000) further includes a housing (100) and a screen take-up roller module (400); the flexible screen module (600) further includes a screen fixing member (620); the screen take-up roller module (400) and the screen fixing member (620) are disposed inside the housing (100); The flexible screen (610) has a first fixing part and a second fixing part arranged along its length direction. The first fixing part is connected to the screen take-up roller module (400), and the second fixing part is connected to the screen fixing member (620). The portion of the flexible screen (610) located between the first fixing part and the second fixing part is tensioned on the roller module (241). The control module is also electrically connected to the screen take-up roller module (400), and the control module is configured to control the operating speed of the drive assembly (221) and the screen take-up roller module (400) according to the tension or pressure value obtained by the sensor (230).

10. The display device (1000) as claimed in claim 9, characterized in that, The control module includes a PI controller configured to control the operating speed of the drive assembly (221) and the screen take-up roller module (400) based on the difference between the pressure value or tension value and the target tension value.

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