Display device and scroll mechanism

Abstract

Disclosed in the present application are a display device and a scroll mechanism. The display device comprises at least a scroll-type display assembly, a winding and unwinding assembly, a lifting assembly and a driving component, wherein the display assembly has a fixed end and a free end, the winding and unwinding assembly being connected to the fixed end, and the lifting assembly being configured to drive the display assembly, thus enabling the free end to move towards or away from the winding and unwinding assembly; the driving component is drivingly connected to the winding and unwinding assembly and the lifting assembly, and the driving component can rotate forward and backward; when the driving component rotates forward, the driving component drives the winding and unwinding assembly to wind up the display assembly, and simultaneously drives the lifting assembly to cause the free end to move towards the winding and unwinding assembly; and when the driving component rotates backward, the driving component drives the winding and unwinding assembly to unwind the display assembly, and simultaneously drives the lifting assembly to cause the free end to move away from the winding and unwinding assembly. The technical solution provided in the present application can optimize the structure and design scheme of the display device, and reduce the overall size of the display device.

Description

Display device and reel mechanism TECHNICAL FIELD

[0001] The present application relates to the field of display devices, in particular to a display device and a reel mechanism. BACKGROUND

[0002] With the progress of science and technology, various flexible display devices have gradually been applied in many fields. The reel type display assembly of such devices can be unfolded and raised while being released from the reel during use, and can be rolled and lowered while being wound on the reel during non-use, thereby realizing efficient use of space.

[0003] The winding and releasing operations of the reel of the current flexible display device, and the lifting operation of the display assembly, are respectively driven by different motors, which results in high cost of two sets of power sources, large space occupation, and high requirements for the synchronization of the two motors. If the two motors are not synchronized, the screen lifting will be stuck.

[0004] SUMMARY

[0005] The present application aims to provide a display device and a reel mechanism, which can optimize the structure and design of the display device and reduce the overall volume.

[0006] To achieve the above-mentioned purpose, the present application provides a display device, which at least comprises a reel type display assembly, a winding and releasing assembly, a lifting assembly and a driving component. The display assembly has a fixed end and a free end. The winding and releasing assembly is connected with the fixed end. The lifting assembly is configured to drive the display assembly to move the free end towards or away from the winding and releasing assembly. The driving component is drivingly connected with the winding and releasing assembly and the lifting assembly, and the driving component can rotate forward and reverse. When the driving component rotates forward, the driving component drives the winding and releasing assembly to wind the display assembly, and drives the lifting assembly to move the free end towards the winding and releasing assembly. When the driving component rotates reverse, the driving component drives the winding and releasing assembly to release the display assembly, and drives the lifting assembly to move the free end away from the winding and releasing assembly.

[0007] The technical solution provided by the present application enables the free end of the display assembly to move towards or away from the winding and releasing assembly through the lifting assembly, so that the display device can be used from bottom to top, expanding a use mode. Meanwhile, one driving component is used to simultaneously drive the reel for winding and releasing the display assembly and the lifting assembly for lifting the display assembly through a transmission assembly. Obviously, this method can effectively reduce the overall cost of the display device, reduce the space occupation of one motor, reduce the volume of the display device, and achieve the design purpose of miniaturization.

[0008] Optionally, the winding and unwinding assembly has a full winding state; in the full winding state, the unwinding speed of the winding and unwinding assembly is greater than the driving speed of the lifting assembly.

[0009] Through the above scheme, when the display assembly is initially unwound, the length of the display assembly unwound by the winding and unwinding assembly is sufficient for the driving of the lifting assembly, thereby avoiding the situation that, when the display assembly is initially unwound, the length of the display assembly released by the winding and unwinding assembly cannot meet the length of the display assembly driven by the lifting assembly, and the winding and unwinding assembly and the lifting assembly pull the display assembly to cause driving jamming.

[0010] Optionally, the winding and unwinding assembly also has a half winding state; in the half winding state, the unwinding speed of the winding and unwinding assembly is greater than or equal to the driving speed of the lifting assembly.

[0011] Through the above scheme, the length of the display assembly unwound in the process of the display assembly being initially lifted to half of the lifting process is just enough to make up for the length of the display assembly lacking in the process, so that the display assembly can complete the entire extension stroke, thereby avoiding the situation that, in the process of completely extending the display assembly, the length of the display assembly released by the winding and unwinding assembly cannot meet the length of the display assembly driven to extend by the lifting assembly, the display assembly cannot complete the entire extension stroke for complete display, and the winding and unwinding assembly and the lifting assembly pull the display assembly to cause driving jamming.

[0012] Optionally, the lifting assembly includes a lifting gear; the side of the display assembly away from the winding and unwinding assembly is formed with a rack structure, the rack structure extends along the display assembly of the one-way bending component, the lifting gear is engaged with the rack structure, and the driving component drives the rack structure to move the free end towards or away from the winding and unwinding assembly through the lifting gear.

[0013] Through the above scheme, the lifting assembly drives the display assembly to move in the mode of the lifting gear and the rack structure being engaged, thereby avoiding the situation of sliding and ensuring the stability of the lifting of the display assembly.

[0014] Optionally, the winding and unwinding assembly includes a winding drum and a driving gear; the winding drum is coaxially arranged with the driving gear, the fixed end is connected with the winding drum, and the driving component drives the winding drum to rotate through the driving gear.

[0015] Through the above scheme, the overall structure of the winding and unwinding assembly is simple, the production difficulty is reduced, and the structure is compact, which is beneficial to reducing the space occupation.

[0016] Optionally, the driving component is drivingly connected with the driving gear and the lifting gear through a transmission assembly, and the linear speed of the driving gear is the same as that of the lifting gear; in the full winding state, the overall diameter of the winding drum after winding the display assembly is greater than the pitch circle diameter of the driving gear.

[0017] Through the above scheme, the unwinding speed of the winding and unwinding assembly is greater than the driving speed of the lifting assembly in the full winding state, and the design scheme is simplified.

[0018] Optionally, in the half winding state, the overall diameter of the winding drum after winding the display assembly is greater than or equal to the pitch circle diameter of the driving gear.

[0019] Through the above scheme, the unwinding speed of the winding and unwinding assembly is greater than or equal to the driving speed of the lifting assembly in the half winding state, and the design scheme is simplified.

[0020] Optionally, the rack structure and the lifting gear are both two; the two rack structures are located on the side of the display assembly away from the winding and unwinding assembly, and the two rack structures are respectively arranged close to the edges located at both ends in the width direction of the display assembly; the two lifting gears are arranged one by one corresponding to the two rack structures and are engaged with each other, and the driving component is drivingly connected with the two driving gears through the transmission assembly.

[0021] Through the above scheme, it can be avoided that the display assembly is biased due to force acting on only one end, so as to ensure the stability of the lifting of the display assembly.

[0022] Optionally, the driving gear has two; the two driving gears are located at both ends of the winding drum, and the driving component is drivingly connected with the two driving gears through the transmission assembly.

[0023] Through the above scheme, the driving component is drivingly connected with the two driving gears through the transmission assembly, so as to avoid that the winding drum is biased due to force acting on only one end, so as to ensure the stability of the rotation of the winding drum.

[0024] Optionally, the transmission assembly comprises a transmission shaft; a slave gear is coaxially arranged at the middle position of the transmission shaft, the driving component is connected with a main gear, the main gear is engaged with the slave gear, the two ends of the transmission shaft are connected with the corresponding driving gears through a gear set and / or a transmission belt set, the two ends of the transmission shaft are connected with the corresponding lifting gears through the gear set and / or the transmission belt set; the axis of the transmission shaft is arranged in parallel with the axis of the winding drum, the transmission shaft, the driving component and the winding drum are arranged side by side, and the driving component is a motor.

[0025] By the above scheme, the driving component is arranged at the middle position of the transmission shaft, both ends of the transmission shaft can be closer to the center of the power output, thereby reducing the friction and energy loss due to the distance, and the driving component at the middle position can better balance the load on the transmission shaft, avoiding additional stress and wear caused by unbalanced load, thereby improving the stability and durability of the transmission assembly. Meanwhile, the transmission shaft, the driving component and the winding drum are arranged side by side, aiming to realize efficient use of space, and thus realize compact design of the display device.

[0026] Optionally, it also comprises a guiding mechanism for guiding the display assembly when it is stretched and rolled up.

[0027] Optionally, the display device further comprises a housing; the housing has a containing space and an inlet and outlet, the inlet and outlet communicates with the containing space, and the inlet and outlet extends in a direction parallel to the axis of the winding drum, the display assembly is wound into the housing or unfolded out of the housing through the inlet and outlet; the winding assembly, the lifting assembly and the transmission assembly are contained in the containing space, and the winding drum, the driving gear and the lifting gear are rotationally connected with the housing.

[0028] By the above scheme, the display device is configured with a housing, which can conveniently collect the components of the display device and facilitate carrying.

[0029] Optionally, the inlet and outlet is located at the bottom of the housing; or, the inlet and outlet is located at the top of the housing.

[0030] By the above scheme, different product designs can be realized according to the different positions of the inlet and outlet in the housing.

[0031] Optionally, the display assembly comprises a one-way bending component and a flexible screen; the one-way bending component is configured to bend towards one side of the winding assembly; the flexible screen is connected to the side of the one-way bending component close to the winding assembly, and the flexible screen is unfolded by standing up synchronously with the one-way bending component, and is wound by bending synchronously with the one-way bending component, and the lifting assembly is configured to drive the one-way bending component to move the free end towards or away from the winding assembly.

[0032] By the above scheme, the one-way bending component provides support for the flexible screen, so that the user can perform touch and pressing operations on the surface of the flexible screen, avoiding the flexible screen bending towards the side away from the winding assembly, and facilitating the user to use. The flexible screen can also be wound by the winding assembly together with the one-way bending component when not in use, to reduce the space occupation and facilitate transportation and carrying.

[0033] Optionally, the one-way bending component comprises a plurality of support units; the top and bottom of each support unit is provided with a hinge part and an abutting part, the hinge part is located at the corner of the support unit, the hinge part is arranged close to the storage and release assembly relative to the abutting part, and the two ends of the side of the support unit away from the storage and release assembly are respectively provided with a rack part; a plurality of support units are arranged in sequence side by side, the top hinge part of one of the two adjacent support units is hinged with the bottom hinge part of the other support unit, and when the top abutting part of one of the two adjacent support units abuts with the bottom abutting part of the other support unit, the two adjacent support units are located on the same straight line, and the rack parts of the two adjacent support units constitute a continuous rack structure.

[0034] Through the above scheme, the one-way bending component is composed of a plurality of support units hinged in sequence, when two adjacent support units abut with each other through the abutting parts, the two abutting parts can cooperate with each other to increase the contact area and ensure the abutting reliability, thereby improving the reliability of the vertical support of the one-way bending component.

[0035] A reel mechanism, comprising a housing, a motor, a winding drum and a lifting gear; the housing has a containing space and an inlet and outlet, the inlet and outlet communicate with the containing space; the winding drum and the lifting gear are located in the containing space, and the winding drum and the lifting gear are rotationally connected with the housing, at least one end of the winding drum is coaxially provided with a driving gear; the motor is installed in the containing space, the motor can rotate forward and reverse, and the motor is drivingly connected with the driving gear and the lifting gear.

[0036] The technical scheme provided in the application, the reel mechanism has a lifting gear, the lifting gear can drive the flexible member to open from bottom to top, expanding a use mode of the flexible member. At the same time, one driving component is used to simultaneously drive the winding drum for winding and releasing the flexible member and the lifting gear for lifting the flexible member through a transmission assembly. Obviously, this kind of mode can effectively reduce the overall cost of the reel mechanism, and reduce the space occupation of one motor, can reduce the volume of the reel mechanism, and achieve the design purpose of miniaturization.

[0037] Optionally, the winding drum is used for winding and releasing the flexible member, the lifting gear is used for engaging with the flexible member, and the flexible member released by the winding drum is stretched out from the inlet and outlet under the driving of the lifting gear; the winding drum has a half winding state, the linear speed of the driving gear is the same as that of the lifting gear, in the half winding state, the overall diameter of the winding drum after winding the flexible member is greater than or equal to the pitch circle diameter of the driving gear.

[0038] By the above scheme, the length of the display assembly that is released from the initial rising to the half rising process can be used to make up for the length of the display assembly that is lacking in the process, so that the display assembly can complete the entire extension stroke, thereby avoiding the situation that the display assembly cannot complete the entire extension stroke for complete display and the driving jamming caused by the mutual pulling of the display assembly by the stowing and releasing assembly and the lifting assembly due to the fact that the length of the display assembly released by the stowing and releasing assembly cannot meet the length of the display assembly driven to extend by the lifting assembly. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0040] FIG. 1 is a first angle structural schematic diagram of a display device in an embodiment provided by the present application;

[0041] FIG. 2 is a partial structural schematic diagram of a display device in an embodiment provided by the present application;

[0042] FIG. 3 is a second angle structural schematic diagram of a display device in an embodiment provided by the present application;

[0043] FIG. 4 is a structural schematic diagram of a transmission assembly in an embodiment provided by the present application;

[0044] FIG. 5 is a structural schematic diagram of a display device after the shell is transparentized in another embodiment provided by the present application;

[0045] FIG. 6 is an enlarged schematic diagram of A part of FIG. 5;

[0046] FIG. 7 is a structural schematic diagram of a shell in an embodiment provided by the present application;

[0047] FIG. 8 is a structural schematic diagram of a display device in still another embodiment provided by the present application;

[0048] FIG. 9 is a schematic diagram of the arrangement of a roller assembly in an embodiment provided by the present application;

[0049] FIG. 10 is a schematic diagram of the arrangement of a roller assembly in another embodiment provided by the present application;

[0050] FIG. 11 is a structural schematic diagram of a display assembly in an embodiment provided by the present application;

[0051] FIG. 12 is a first angle structural schematic diagram of a support monomer in an embodiment provided by the present application;

[0052] Fig. 13 is a schematic view of a second angle structure of a support unit in an embodiment provided in the present application;

[0053] Fig. 14 is a schematic view of a partial structure bending state of a one-way bending component in an embodiment provided in the present application;

[0054] Fig. 15 is a schematic view of a partial structure standing state of a one-way bending component in an embodiment provided in the present application.

[0055] Legend of reference signs:

[0056] 100, display assembly; 110, fixed end; 120, free end; 130, one-way bending component; 131, rack structure; 132, support unit; 1321, hinged part; 1322, abutting part; 1323, rack part; 140, flexible screen; 150, elastic component; 200, winding and unwinding assembly; 210, winding drum; 220, driving gear; 300, lifting assembly; 310, lifting gear; 400, driving component; 410, main gear; 500, transmission assembly; 510, transmission shaft; 511, slave gear; 520, gear set; 521, first gear; 522, second gear; 523, third gear; 524, fourth gear; 530, transmission belt set; 531, first pulley; 532, second pulley; 533, transmission belt; 600, housing; 610, accommodating space; 620, inlet and outlet; 710, roller assembly; a, first reserved area; b, second reserved area. DETAILED DESCRIPTION

[0057] For the purposes of the present application, the terms such as "upper", "above", "lower", "below", "first end", "second end", "one end", "the other end" and the like expressing spatial relative positions are used to describe the relationship of one unit or feature relative to another unit or feature as shown in the drawings for the purpose of convenience. The spatial relative position terms can be intended to include different orientations of the device in addition to the orientation shown in the drawings. For example, if the device in the drawings is turned over, the unit described as being "below" or "under" the other unit or feature will be "above" the other unit or feature. Therefore, the exemplary term "below" can encompass both the above and below orientations. The device can be oriented in other ways (rotated 90 degrees or other orientations), and the spatial-related descriptions used herein are interpreted accordingly.

[0058] In addition, the terms "mounting", "arrangement", "provided with", "connection", "sliding connection", "fixing", "sleeving" should be interpreted broadly. For example, "connection" can be fixed connection, detachable connection, or integral structure; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium, or internal connection between two devices, elements or components. The specific meaning of the above terms in the present application can be understood according to the specific circumstances by those skilled in the art.

[0059] With the progress of science and technology, various flexible display devices have been gradually applied in many fields. The display assembly of such devices can be unwound from a reel while rising and expanding during use, and can be wound on the reel while falling and retracting during non-use, so as to realize efficient use of space.

[0060] The winding and unwinding operations of the reel of the current reel-type flexible display device, and the lifting operation of the display assembly, are respectively driven by different motors, which results in high cost of two sets of power sources, large space occupation, and high requirements for the synchronization of the two motors. If the two motors are not synchronized, the screen lifting will be stuck.

[0061] To solve the above problems, the present inventors use one motor and design a new transmission assembly to simultaneously drive the reel for winding and unwinding the display assembly and the lifting assembly for lifting the display assembly.

[0062] In addition, during the winding and unwinding of the reel, the present inventors have found that the overall diameter of the display assembly wound on the reel is changing as the winding or unwinding proceeds, but the angular velocity of the reel is constant. Therefore, during the winding and unwinding of the reel, the linear velocity of the display assembly on the reel is the largest when the reel is full, and the linear velocity of the display assembly on the reel is the smallest when the reel is empty. The lifting speed of the display assembly driven by the lifting assembly is always constant, i.e. the winding and unwinding speed of the display assembly is not synchronized with the lifting speed of the display assembly, which may result in the lifting speed being greater than the unwinding speed. If the display assembly being unwound has no extra length at this time, the display assembly located in the reel and the lifting assembly support will be pulled by the reel and the lifting assembly, causing the display assembly to be stuck.

[0063] Specifically, when the display assembly has not been raised, the winding drum is in a full winding state, and in the full winding state, the unwinding speed should be greater than the raising speed. In this way, when the display assembly is initially unwound, the length of the display assembly released by the winding drum is greater than the length of the display assembly raised by the lifting assembly, and the length of the display assembly unwound by the winding drum is sufficient for the length of the display assembly raised by the lifting assembly, thereby avoiding the situation that the winding drum and the lifting assembly pull the display assembly to cause driving jamming.

[0064] Further, when the display assembly is raised to half of the total raising stroke, the winding drum is in a half winding state, and in the half winding state, the unwinding speed should be greater than the raising speed. In this way, during the process that the display assembly is raised from the initial raising to half of the total raising stroke, or during the process that the winding drum is unwound from the full winding state to the half winding state, the unwinding speed is always greater than the raising speed, i.e., the length of the display assembly unwound is always greater than the length of the display assembly required for raising. In this way, even if the unwinding speed is less than the raising speed and the length of the display assembly unwound is less than the length of the display assembly required for raising during the process that the display assembly is raised from half of the total raising stroke to the total raising stroke, the length of the display assembly released during the process that the display assembly is raised from the initial raising to half of the total raising stroke can be used to compensate for the length of the display assembly required for raising, thereby enabling the display assembly to complete the total raising stroke, and further avoiding the situation that the winding drum and the lifting assembly pull the display assembly to cause driving jamming during the process that the display assembly is raised to the total raising stroke.

[0065] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the embodiments described in the present application are only part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0066] Please refer to FIG. 1 and FIG. 2, in an implementable embodiment, the display device at least includes a winding drum type display assembly 100, a winding and unwinding assembly 200, a lifting assembly 300 and a driving component 400.

[0067] The display assembly 100 is a screen assembly capable of being wound and unwound. When the display assembly 100 is wound, the display assembly 100 can be wound like a reel. When the display assembly 100 is completely unwound, the display assembly 100 is a long block structure, and the display assembly 100 has a width direction (see the arrow direction shown in FIG. 1) and a length direction perpendicular to the width direction of the display assembly 100. The display assembly 100 has a fixed end 110 and a free end 120 at opposite ends in the length direction of the display assembly 100. When the display assembly 100 is connected to the winding and unwinding assembly 200, as shown in FIG. 1, the width direction of the display assembly 100 is parallel to the axis direction of the winding and unwinding assembly 200, and the display assembly 100 is connected to the winding and unwinding assembly 200 through the fixed end 110, so that the display assembly 100 is wound or released by the winding and unwinding assembly 200. The free end 120 passes through the lifting assembly 300 and connects the display assembly 100 to the lifting assembly 300. The lifting assembly 300 is configured to drive the display assembly 100, so that the free end 120 can move towards or away from the winding and unwinding assembly 200.

[0068] It should be noted that the display assembly can have only a display function or can have both a display function and a touch function, and the present application does not limit this.

[0069] In the present embodiment, the driving component 400 serves as a power source and is drivingly connected to the winding and unwinding assembly 200 and the lifting assembly 300, respectively, so that one power source is used to drive the winding and unwinding assembly 200 and the lifting assembly 300. Compared with the prior art in which the winding and unwinding assembly 200 and the lifting assembly 300 are respectively driven by separate power sources, the present application can effectively reduce the overall cost of the display device, reduce the space occupied by one motor, and reduce the overall size of the display device to achieve the design purpose of miniaturization.

[0070] In the present embodiment, the driving component 400 can be forward rotated and reverse rotated. When the driving component 400 is forward rotated, the driving component 400 drives the winding and unwinding assembly 200 to wind the display assembly 100, and simultaneously drives the lifting assembly 300 to move the free end 120 towards the winding and unwinding assembly 200. When the driving component 400 is reverse rotated, the driving component 400 drives the winding and unwinding assembly 200 to release the display assembly 100, and simultaneously drives the lifting assembly 300 to move the free end 120 away from the winding and unwinding assembly 200.

[0071] It should be noted that clockwise rotation of the output shaft of the driving component 400 is forward rotation of the driving component 400, and vice versa. Of course, counterclockwise rotation of the output shaft of the driving component 400 can be forward rotation of the driving component 400, and vice versa, and the present application does not specifically limit this.

[0072] In actual application, the driving component 400 drives the lifting assembly 300 to move the free end 120 towards or away from the winding and unwinding assembly 200, which can mean driving the display assembly 100 to extend or retract, or driving the display assembly 100 to retract or extend, or driving the display assembly 100 to horizontally extend or retract, which is not limited in the present application.

[0073] In an implementable embodiment, the winding and unwinding assembly 200 has a full winding state. In the full winding state, the unwinding speed of the winding and unwinding assembly 200 should be greater than the driving speed of the lifting assembly 300. In this way, when the display assembly 100 is initially unwound, the length of the display assembly 100 unwound by the winding and unwinding assembly 200 is greater than the length driven by the lifting assembly 300 due to the fact that the unwinding speed of the winding and unwinding assembly 200 is greater than the driving speed of the lifting assembly 300. In this way, the length of the display assembly 100 unwound by the winding and unwinding assembly 200 is sufficient for the driving of the lifting assembly 300, thereby avoiding the situation that the display assembly 100 is pulled by the winding and unwinding assembly 200 and the lifting assembly 300 when the display assembly 100 is initially unwound, which causes the driving to be stuck.

[0074] It should be noted that the "full winding state" defined in the present application refers to the state of the winding and unwinding assembly 200 when the display assembly 100 is not lifted. It should be noted that when the display assembly 100 is not lifted, there is a part of the display assembly 100 not wound on the winding and unwinding assembly 200, that is, the full winding state does not refer to the state of the winding and unwinding assembly 200 when the display assembly 100 is completely wound on the winding and unwinding assembly 200.

[0075] Further, in order to enable the display assembly 100 to complete the full extension stroke for complete display, in an implementable embodiment, the winding and releasing assembly 200 further has a half-winding state. In the half-winding state, the unwinding speed of the winding and releasing assembly 200 should be greater than or equal to the driving speed of the lifting assembly 300. Taking the unwinding speed of the winding and releasing assembly 200 in the half-winding state equal to the driving speed of the lifting assembly 300 as an example, during the process of the display assembly 100 extending from the initial extension to half of the extension, or in other words, during the process of the winding and releasing assembly 200 unwinding from the full-winding state to the half-winding state, since the unwinding speed of the winding and releasing assembly 200 is always greater than the driving speed of the lifting assembly 300 (which also meets the requirement that the unwinding speed of the winding and releasing assembly 200 in the full-winding state should be greater than the driving speed of the lifting assembly 300), the length of the unwound display assembly 100 is always greater than the length of the display assembly 100 required for the lifting. In this way, even if the unwinding speed is less than the driving speed and the length of the unwound display assembly 100 is less than the length of the display assembly 100 required for the lifting during the process of the display assembly 100 extending from half of the total extension stroke to the full extension, the length of the display assembly 100 released during the process of the display assembly 100 extending from the initial extension to half of the extension can be used to make up for the lack of the length of the display assembly 100 in this process, thereby enabling the display assembly 100 to complete the full extension stroke for complete display, and further avoiding the situation that the display assembly 100 cannot complete the full extension stroke for complete display due to the length of the display assembly 100 released by the winding and releasing assembly 200 failing to meet the length of the display assembly 100 driven to extend by the lifting assembly 300, and the driving being stuck due to the winding and releasing assembly 200 and the lifting assembly 300 pulling the display assembly 100.

[0076] It should be noted that the "half-winding state" defined in the present application refers to the state of the winding and releasing assembly 200 when the display assembly 100 extends to half of the full extension stroke. It should be noted that when the display assembly 100 completes the full extension stroke, there is still a part of the display assembly 100 not extended, that is, the display assembly 100 completing the full extension stroke does not mean that the display assembly 100 is fully extended, and correspondingly, the display assembly 100 extending to half of the full extension stroke does not mean that the display assembly 100 is half of the full length. For example, the total length of the display assembly 100 is 150 cm, the full extension stroke of the display assembly 100 is 100 cm, and correspondingly, when the display assembly 100 extends to 50 cm, the winding and releasing assembly 200 is in the half-winding state.

[0077] Regarding the specific manner and structure of the lifting assembly 300 driving the display assembly 100, the present application provides two implementable embodiments for reference.

[0078] In the embodiment one, the lifting assembly 300 can drive the display assembly 100 in a frictional manner, so that the free end 120 of the display assembly 100 moves towards or away from the retractable assembly 200, thereby achieving the extension or retraction action. Specifically, the lifting assembly 300 includes a rubber roller, which abuts against one side of the display assembly 100, thereby driving the display assembly 100 by the frictional force between the rubber roller and the display assembly 100.

[0079] In the embodiment two, as shown in FIG. 3, the lifting assembly 300 can drive the display assembly 100 in a gear meshing manner, so that the free end 120 of the display assembly 100 moves towards or away from the retractable assembly 200. Specifically, the lifting assembly 300 can include a lifting gear 310, and the side of the display assembly 100 away from the retractable assembly 200 (the rear side in the view of FIG. 1) is formed with a rack structure 131 extending along the length direction of the display assembly 100. The lifting gear 310 is used to mesh with the rack structure 131, so that the driving component 400 can drive the rack structure 131 to move the free end 120 towards or away from the retractable assembly 200 by the lifting gear 310. Moreover, the lifting assembly 300 drives the display assembly 100 to move in the meshing manner of the lifting gear 310 and the rack structure 131, thereby avoiding the sliding situation and ensuring the stability of the lifting of the display assembly 100.

[0080] In another optional embodiment, the rack structure 131 can also be located at at least one end surface (the left and right end surfaces in the view of FIG. 1) of the display assembly 100 along the width direction of the display assembly 100.

[0081] In the scenario of extending the display assembly 100 from bottom to top for use, the meshing manner of the lifting gear 310 and the rack structure 131 can also provide support to the extended display assembly 100, thereby preventing the extended display assembly 100 from falling down. Therefore, the embodiment two is preferred in the present application, and will be described hereinafter.

[0082] Please refer to FIG. 1 and FIG. 2 again. In an implementable embodiment, the retractable assembly 200 can include a winding drum 210 and a driving gear 220. The winding drum 210 is coaxially arranged with the driving gear 220, the fixed end 110 of the display assembly 100 is connected with the winding drum 210, and the driving component 400 drives the winding drum 210 to rotate by the driving gear 220, so as to wind or release the display assembly 100.

[0083] In the present embodiment, the driving gear 220 should be located at the end of the winding drum 210, thereby avoiding the interference of the driving gear 220 to the winding of the display assembly 100, and facilitating the connection of the driving component 400 with the driving gear 220.

[0084] In practical application, the fixed end 110 of the display assembly 100 can be locked on the circumferential surface of the winding drum 220 or the inner wall of the baffle located at both ends of the winding drum 220 by fasteners. Of course, the fixed end 110 can also be connected with the winding drum 220 in other ways, such as bonding, clamping, etc., which are not limited in the present application.

[0085] In order to enable the driving component 400 to simultaneously drive the driving gear 220 and the lifting gear 310, in an implementable embodiment, a transmission assembly 500 is arranged between the driving component 400 and the driving gear 220 and the lifting gear 310, and the driving component 400 is connected with the driving gear 220 and the lifting gear 310 through the transmission assembly 500, so that the driving component 400 drives the driving gear 220 and the lifting gear 310 simultaneously through the transmission of the transmission assembly 500.

[0086] It should be noted that, whether the linear speed of the driving gear 220 and the linear speed of the lifting gear 310 are equal or not, as long as the condition that the unwinding speed of the winding and unwinding assembly 200 is greater than the driving speed of the lifting assembly 300 in the full winding state is met, the length of the display assembly 100 unwound by the winding and unwinding assembly 200 is sufficient for the driving of the lifting assembly 300 when the display assembly 100 is initially unwound. Similarly, whether the linear speed of the driving gear 220 and the linear speed of the lifting gear 310 are equal or not, as long as the condition that the unwinding speed of the winding and unwinding assembly 200 is greater than or equal to the driving speed of the lifting assembly 300 in the half winding state is met, the display assembly 100 can complete the entire extension stroke. That is, in an implementable embodiment, the linear speed of the driving gear 220 can be different from the linear speed of the lifting gear 310.

[0087] But in order to simplify the design, in another preferred embodiment, the linear velocity of the driving gear 220 and the linear velocity of the lifting gear 310 are equal. In this way, since the winding drum 210 is coaxially connected with the driving gear 220, the angular velocities of the two are the same, and according to the formula v = r·ω, where r is the radius of the object to the center of rotation, and ω is the angular velocity, it can be known that the size relationship between the overall diameter of the winding drum 210 after winding the display assembly 100 and the pitch circle diameter of the driving gear 220 directly determines the size relationship between the linear velocity of the winding drum 210 after winding the display assembly 100 (i.e. the linear velocity of the winding and releasing assembly 200) and the linear velocity of the driving gear 220. Since the linear velocity of the driving gear 220 and the linear velocity of the lifting gear 310 are equal, the linear velocity of the lifting gear 310 is the driving speed of the lifting assembly 300. The winding and releasing assembly 200 and the lifting assembly 300 are driven by the driving component 400 and the transmission of the transmission assembly 500, and the size relationship between the overall diameter of the winding drum 210 after winding the display assembly 100 and the pitch circle diameter of the driving gear 220 directly determines the size relationship between the linear velocity of the winding and releasing assembly 200 and the driving speed of the lifting assembly 300. That is, by setting the size relationship (structural relationship) between the overall diameter of the winding drum 210 after winding the display assembly 100 and the pitch circle diameter of the driving gear 220, and the transmission ratio of the transmission assembly 500, the linear velocity of the winding and releasing assembly 200 and the driving speed of the lifting assembly 300 can meet the above requirements (such as in the half-winding state, the unwinding speed of the winding and releasing assembly 200 is equal to the driving speed of the lifting assembly 300).

[0088] In this way, by setting the overall diameter of the winding drum 210 after winding the display assembly 100 to be greater than the pitch circle diameter of the driving gear 220, the unwinding speed of the winding and releasing assembly 200 can be greater than the driving speed of the lifting assembly 300 in the full-winding state. Similarly, by setting the overall diameter of the winding drum 210 after winding the display assembly 100 to be greater than or equal to the pitch circle diameter of the driving gear 220, the unwinding speed of the winding and releasing assembly 200 can be greater than the driving speed of the lifting assembly 300 in the half-winding state, thereby simplifying the design scheme and facilitating the implementation of the scheme.

[0089] Please refer to Fig. 3 again, in an implementable embodiment, the above-mentioned rack structures 131 and lifting gears 310 are both two, the two rack structures 131 are located on the side of the display assembly 100 away from the winding and releasing assembly 200, and are spaced apart to avoid the display assembly 100 being biased by force at one end, so as to ensure the stability of the lifting of the display assembly 100. In this embodiment, the two rack structures 131 should be respectively close to the edges of the two ends along the width direction of the display assembly 100, so as to facilitate the subsequent arrangement of the lifting gears 310. The two lifting gears 310 are correspondingly arranged with the two rack structures 131 and are meshed with each other, and the driving component 400 can be drivingly connected with the two driving gears 220 through the transmission assembly 500.

[0090] Please refer to Fig. 1 and Fig. 2 again, in an implementable embodiment, the driving gear 220 has two, the two driving gears 220 have equal pitch circle diameters, the two driving gears 220 are coaxially arranged at two ends of the winding drum 210, and the driving component 400 is drivingly connected with the two driving gears 220 through the transmission assembly 500, so as to avoid the bias of the winding drum 210 caused by the single-end stress, and to ensure the stability of the rotation of the winding drum 210.

[0091] Regarding the specific structure of the transmission assembly 500, please refer to Fig. 2 and Fig. 3 again, in an implementable embodiment, the transmission assembly 500 can include a transmission shaft 510. The middle position of the transmission shaft 510 is coaxially provided with a slave gear 511, and the driving component 400 is connected with a main gear 410 which is engaged with the slave gear 511. That is, the driving component 400 is arranged at the middle position of the transmission shaft 510, and the two ends of the transmission shaft 510 can be closer to the center of the power output, so as to reduce the friction and energy loss caused by the distance, and the driving component 400 at the middle position can better balance the load on the transmission shaft 510, so as to avoid the additional stress and wear caused by the unbalanced load, thereby improving the stability and durability of the transmission assembly 500.

[0092] Among them, the two ends of the transmission shaft 510 are connected with the corresponding driving gears 220 through the gear set 520 and / or the transmission belt set 530, and the two ends of the transmission shaft 510 are connected with the corresponding lifting gears 310 through the gear set 520 and / or the transmission belt set 530. That is, the transmission shaft 510 and the driving gears 220 at both ends and the lifting gears 310 at both ends can be driven by one of the gear set 520 and the transmission belt set 530 or a combination of the two, and the solutions adopted by the two driving gears 220 at both ends and the two lifting gears 310 at both ends can be the same, different, or partially the same. Among them, the transmission belt set 530 refers to the combined transmission of the transmission belt and the pulley, and the gear set 520 refers to the combined transmission of multiple gears.

[0093] In the present embodiment, the transmission shaft 510 is arranged in parallel with the axis of the winding drum 210, and the transmission shaft 510, the driving component 400 and the winding drum 210 are arranged side by side, aiming to realize efficient use of space and further realize compact design of the display device. In actual application, the driving component 400 can adopt a motor or other components that can realize continuous rotation and forward and reverse rotation.

[0094] For the convenience of understanding, the following takes the transmission shaft 510 at one end drivingly connected with the corresponding driving gear 220 at one end through the gear set 520, and drivingly connected with the lifting gear 310 through the transmission belt set 530 as an example for detailed description.

[0095] Please refer to FIG. 4, one end of the transmission shaft 510 is coaxially provided with a first pulley 531, the lifting gear 310 is coaxially connected with a second pulley 532, the first pulley 531 and the second pulley 532 are connected through a transmission belt 533, so that when the transmission shaft 510 rotates, the lifting gear 310 can be driven to rotate in turn through the first pulley 531, the transmission belt 533 and the second pulley 532. One end of the transmission shaft 510 is also coaxially provided with a first gear 521, the first gear 521 is meshingly connected with a second gear 522, the second gear 522 is meshingly connected with a third gear 523, the third gear 523 is coaxially provided with a fourth gear 524, and the fourth gear 524 is meshed with the drive gear 220.

[0096] When it is necessary to ensure that the linear speed of the drive gear 220 and the linear speed of the lifting gear 310 are equal, in an implementable embodiment, the pitch circle diameter of the coaxially provided first pulley 531 and the pitch circle diameter of the first gear 521 should be equal to ensure that the linear speeds of the two are equal. Similarly, the pitch circle diameter of the coaxially provided second pulley 532 and the pitch circle diameter of the lifting gear 310 should be equal to ensure that the linear speeds of the two are equal. The pitch circle diameter of the coaxially provided third gear 523 and the pitch circle diameter of the fourth gear 524 should be equal to ensure that the linear speeds of the two are equal. Moreover, since the first pulley 531 and the second pulley 532 are connected through the transmission belt 533, the linear speeds of the first pulley 531 and the second pulley 532 are equal, the first gear 521 is meshingly connected with the third gear 523 through the second gear 522, the linear speeds of the first gear 521 and the third gear 523 are equal, the fourth gear 524 is meshed with the drive gear 220, and the linear speed of the fourth gear 524 and the drive gear 220 is equal. In this way, through the design of the structure, the linear speed of the drive gear 220 and the linear speed of the lifting gear 310 can be made equal, and the design is simplified.

[0097] Please refer to FIGS. 5 to 8, in an implementable embodiment, the display device further comprises a housing 600, the housing 600 has a containing space 610 and an inlet and outlet 620, the inlet and outlet 620 communicates with the containing space 610, and the inlet and outlet 620 extends in a direction parallel to the axis of the winding drum 210, the display assembly 100 is wound into the housing 600 or unfolded out of the housing 600 through the inlet and outlet 620.

[0098] In the present embodiment, the housing 600 serves as the shell structure of the display device, mainly playing a role of containing, supporting and protecting other components of the display device. Among them, the winding and unfolding assembly 200, the lifting assembly 300 and the transmission assembly 500 are contained in the containing space 610, and the winding drum 210, the drive gear 220, the lifting gear 310 and the transmission shaft 510 are all rotationally connected with the housing 600.

[0099] The display device equipped with the housing 600 generally has two implementable embodiments.

[0100] In one implementable embodiment, as shown in FIG. 5, the inlet and outlet 620 is located at the top of the housing 600, and the display assembly 100 can be extended upward from the inlet and outlet 620.

[0101] In actual application, the housing 600 can be placed on a table or the ground for use, and the display assembly 100 is unfolded upward from the housing 600 to form a vertically unfolded display screen.

[0102] In another implementable embodiment, as shown in FIG. 8, the inlet and outlet 620 is located at the bottom of the housing 600, and the display assembly 100 can be extended downward from the inlet and outlet 620.

[0103] In actual application, the housing 600 is generally hung on the roof or wall, and the display assembly 100 is unfolded downward from the housing 600 to form a vertically unfolded display screen.

[0104] The above-mentioned display assembly 100 can be composed of a screen that can be bent alone.

[0105] The above-mentioned display assembly 100 can also be composed of a flexible screen and a component for supporting the bending and unfolding of the flexible screen. Specifically, referring again to FIG. 1, in one implementable embodiment, the display assembly 100 can include a one-way bending component 130 and a flexible screen 140. The one-way bending component 130 is configured to bend in one direction toward one side of the stowing and unfolding assembly 200. In this way, the one-way bending component 130 can not only bear the pressing force from the side close to the stowing and unfolding assembly 200 to the side away from the stowing and unfolding assembly 200 without bending when unfolded, but also bend toward the side close to the stowing and unfolding assembly 200 when stowed.

[0106] Among them, the flexible screen 140 is connected to the side of the one-way bending component 130 close to the stowing and unfolding assembly 200. At this time, the one-way bending component 130 serves as a supporting component for supporting the flexible screen 140, and the flexible screen 140 can be unfolded by standing up synchronously with the one-way bending component 130, and the flexible screen 140 can also be stowed by bending synchronously with the one-way bending component 130. In actual application, the flexible screen 140 can be connected to the one-way bending component 130 by adhesion to ensure that the flexible screen 140 can change with the one-way bending component 130 at any time.

[0107] In the embodiment, the flexible screen 140 can be unfolded when needed, and the flexible screen 140 is supported by the one-way bending component 130, so that the user can touch and press the surface of the flexible screen 140, and the flexible screen 140 is prevented from bending towards the side away from the retractable assembly 200, facilitating the user to use. When not needed, the flexible screen 140 can be retracted together with the one-way bending component 130 by the retractable assembly 200, so as to reduce the space occupation and facilitate transportation and carrying.

[0108] In actual application, the flexible screen 140 can extend to the end faces of the two ends in the length direction of the one-way bending component 130 (the upper and lower end faces in the view of FIG. 1), or can extend to the end face of only one end in the length direction of the one-way bending component 130. As shown in FIG. 1, when the flexible screen 140 extends to the end face of only one end in the length direction of the one-way bending component 130, the flexible screen 140 should extend to the end face of the one end of the one-way bending component 130 close to the free end 120, so that the flexible screen 140 can be immediately extended together with the one-way bending component 130 when the one-way bending component 130 is extended. Meanwhile, the one end of the one-way bending component 130 close to the fixed end 110 is free of the flexible screen 140, facilitating the connection of the one-way bending component 130 and the winding drum 210, and avoiding damage to the flexible screen 140.

[0109] As shown in FIG. 9, the first reserved area a (see FIG. 6) exists between the end faces of the two ends in the width direction of the flexible screen 140 (the left and right end faces in the view of FIG. 1) and the end faces of the two ends in the width direction of the one-way bending component 130. The display device further comprises a guide mechanism for guiding the display assembly 100 when being stretched and retracted, and the guide mechanism can abut against the first reserved area a, so that the one-way bending component 130 is extended or retracted under the guidance of the guide mechanism, and meanwhile the guide mechanism is prevented from contacting the flexible screen 140 to damage the flexible screen 140.

[0110] In an implementable embodiment, the above-mentioned guide mechanism is arranged at the entrance and exit of the housing 600, and the guide mechanism can comprise two groups of roller sets, which are respectively arranged at the two ends in the width direction of the display assembly 100 (the left and right end faces in the view of FIG. 1). Each group of roller sets has two roller assemblies 710, which are arranged at the front and back sides of the display assembly 100, i.e., at the side of the display assembly 100 close to the retractable assembly 200 and at the side of the display assembly 100 away from the retractable assembly 200.

[0111] In actual application, as shown in FIG. 9, the two roller assemblies 710 respectively located at the front and back sides of the display assembly 100 can be arranged face to face. Alternatively, as shown in FIG. 10, the two roller assemblies 710 respectively located at the front and back sides of the display assembly 100 can also be arranged staggered. When the two roller assemblies 710 are arranged staggered, one roller assembly 710 is arranged face to face with the lifting gear 310, and the other roller assembly 710 is arranged side by side with the lifting gear 310 along the width direction of the display assembly 100, so as to be staggered with each other along the width direction of the display assembly 100.

[0112] Considering that the flexible screen 140 has two states of the rolled state and the unfolded state, and the stress distribution inside the flexible screen 140 can not completely recover to the original state when the flexible screen 140 recovers from the rolled state to the unfolded state, resulting in that the flexible screen 140 still has certain residual stress, which will cause the flexible screen 140 to be curled to a certain extent again. That is, the flexible screen 140 has the possibility of bending from the side away from the storage and taking assembly 200 to the side close to the storage and taking assembly 200.

[0113] In order to solve the above problems, as shown in FIG. 11, in an implementable embodiment, the display assembly 100 can further include an elastic component 150. The elastic component 150 is connected to the side of the one-way bending component 130 away from the storage and taking assembly 200, the elastic component 150 has elastic force and the elastic component 150 is always in tension state, that is, the elastic component 150 is in tension state when the one-way bending component 130 and the flexible screen 140 are unfolded or rolled, which means that the force of the elastic component 150 on the one-way bending component 130 can at least partially offset the bending force of the one-way bending component 130 to the storage and taking assembly 200, so that when the one-way bending component 130 and the flexible screen 140 are unfolded, the force of the elastic component 150 on the one-way bending component 130 can overcome the bending stress of the flexible screen 140 from the side away from the storage and taking assembly 200 to the side close to the storage and taking assembly 200, so that the one-way bending component 130 remains upright without external force, thereby reducing the possibility of bending of the flexible screen 140 caused by accidental stress or its own residual stress when the display device is in use.

[0114] In this embodiment, the maximum elastic force of the elastic component 150 should be moderate, which can block the bending of the flexible screen 140 caused by accidental stress or its own residual stress when the flexible screen 140 is normally used, and can continue to produce tensile deformation under stress when rolled, so as to follow the bending of the one-way bending component 130 and be rolled synchronously.

[0115] In actual use, as shown in FIG. 11, there should also be a second reserved area b between the end face of at least one end of the unidirectional bending component 130 in the width direction and the end face of the corresponding end of the elastic component 150, and the lifting assembly 300 drives the unidirectional bending component 130 through the second reserved area b, that is, the rack structure 131 is located in the second reserved area b.

[0116] The elastic component 150 can be an elastic film or an elastic strip made of an elastic material such as TPE (thermoplastic elastomer), PU (polyurethane elastomer), latex, rubber, or elastic plastic. The elastic component 150 can be connected to the side of the unidirectional bending component 130 away from the winding and unwinding assembly 200 by bonding, riveting, or the like. However, it should be noted that if the elastic component 150 is connected to the unidirectional bending component 130 by riveting, the rivet should not protrude from the rear surface of the elastic component 150, or the riveting position should be located at the edge of the elastic component 150 to avoid pressure damage to the flexible screen 140 during winding.

[0117] For the specific structure of the unidirectional bending component 130 described above, please refer to FIGS. 12-15. In one possible implementation, the unidirectional bending component 130 can include a plurality of support monomers 132. Adjacent two support monomers 132 are hingedly connected and have abutting portions 1322 that abut each other to limit the turning, thereby forming a component that can be straightly supported and unidirectionally bent.

[0118] Specifically, each support monomer 132 has a generally cuboid structure. The top and bottom of each support monomer 132 are provided with a hinge portion 1321 and an abutting portion 1322. The hinge portion 1321 is located at the corner of the support monomer 132, and the hinge portion 1321 is closer to the winding and unwinding assembly 200 than the abutting portion 1322, so that the support monomer 132 can turn and bend in the direction of the winding and unwinding assembly 200 around the hinge portion 1321. The side of the support monomer 132 away from the winding and unwinding assembly 200 is provided with a rack portion 1323 at both ends. The plurality of support monomers 132 are arranged in sequence and side by side. The top hinge portion 1321 of one of the adjacent two support monomers 132 is hingedly connected to the bottom hinge portion 1321 of the other of the adjacent two support monomers 132, thereby being connected in series like a chain structure. Each support monomer 132 can turn around its hinge portion 1321, thereby realizing the bending function of the unidirectional bending component 130. When the top abutting portion 1322 of one of the adjacent two support monomers 132 abuts against the bottom abutting portion 1322 of the other of the adjacent two support monomers 132, the adjacent two support monomers 132 are located on the same straight line, thereby ensuring that the unidirectional bending component 130 can be unfolded to a straight-up state, and the rack portions 1323 of the adjacent two support monomers 132 constitute a continuous rack structure 131.

[0119] In the embodiment, the length direction of the support monomer 132 is parallel to the axis of the cylinder formed after the unidirectional bending component 130 is wound, so that the formed unidirectional bending component 130 can have sufficient width to attach a flexible screen 140 of a larger width, and the length of the unidirectional bending component 130 can be changed by increasing or decreasing the number of support monomers 132, so that flexible screens 140 of different lengths can be attached. The shapes of the abutting portions 1322 of the two adjacent support monomers 132 abutting each other should be matched with each other, so that when the two adjacent support monomers 132 abut each other through the abutting portions 1322, the two abutting portions 1322 can cooperate with each other to increase the contact area and ensure the abutting reliability.

[0120] In actual application, the abutting portion 1322 can be configured as a flat surface, an arc surface, a V-shaped surface, or other shaped surface structure, which is not limited in the application. Preferably, the abutting portion 1322 is configured as a flat surface structure, so that the overall structure of the support monomer 132 is simpler, the manufacturing is more convenient, and the production cost is reduced. The hinge portions 1321 located at the top and bottom of the support monomer 132 are both two and located at both ends of the support monomer 132. The hinge portion 1321 located at the top is arranged in a staggered manner with the hinge portion 1321 located at the bottom. The hinge hole is formed on each hinge portion 1321, so that the top two end hinge portions 1321 of one of the two adjacent support monomers 132 can be flush with the bottom two end hinge portions 1321 of the other support monomer 132, and the hinge holes are communicated with each other, and then the hinge holes connected with the pin shafts are communicated with each other, so as to realize the hinge connection.

[0121] It should be pointed out that in order to make the rack portions 1323 of the two adjacent support monomers 132 constitute a continuous rack structure 131, the tooth shape and pitch of the rack portions 1323 of the two adjacent support monomers 132 should be matched with each other, and the junction can be smoothly connected. For example, as shown in FIG. 7, the rack design on a single rack portion 1323 must be designed with an integer, and at the same time, such design has the same structure of each support monomer 132, which is helpful for the production of the unidirectional bending component 130, and does not need to consider the assembly sequence, which is convenient for assembly operation.

[0122] Based on the same inventive concept, the application further provides a reel mechanism, which can at least include a housing 600, a motor, a reel 210 and a lifting gear 310. The housing 600 has a containing space 610 and an inlet and outlet 620, which communicates with the containing space 610. The reel 210 and the lifting gear 310 are located in the containing space 610, and the reel 210 and the lifting gear 310 are rotationally connected with the housing 600, and at least one end of the reel 210 is coaxially provided with a driving gear 220. The motor is installed in the containing space 610, and the motor can rotate forward and reverse, and the motor is drivingly connected with the driving gear 220 and the lifting gear 310.

[0123] Further, the reel 210 is used to wind and release the flexible member, and the flexible member is engaged with the lifting gear 310, and the flexible member released by the reel 210 is driven by the lifting gear 310 to extend out of the inlet and outlet 620. The linear speed of the driving gear 220 is the same as that of the lifting gear 310, and the reel 210 has a half winding state. In the half winding state, the overall diameter of the reel 210 after winding the flexible member is greater than or equal to the pitch circle diameter of the driving gear 220.

[0124] It should be noted that the flexible member refers to a part that can be deformed within a certain range, and such deformation can be elastic or plastic, and the flexible member is deformed when subjected to external force, and returns to its original state or maintains a certain deformation after the external force is removed. One implementation of the flexible member can refer to the display assembly 100 described above. In addition, regarding the reel 210, the lifting gear 310, and the driving connection structure of the motor with the driving gear 220 and the lifting gear 310, the above-mentioned content can be referred to, and will not be repeated here.

[0125] The above only describes the preferred embodiments of the application and is not intended to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A display device, characterized in that, The display device includes at least a rollable display assembly (100), a retractable assembly (200), a lifting assembly (300), and a driving component (400), wherein, The display component (100) has a fixed end (110) and a free end (120), the retracting component (200) is connected to the fixed end (110), and the lifting component (300) is configured to drive the display component (100) so that the free end (120) moves toward or away from the retracting component (200). The drive component (400) is driven to connect with the retracting assembly (200) and the lifting assembly (300), and the drive component (400) can rotate forward and reverse. When the drive component (400) rotates forward, the drive component (400) drives the take-up and release assembly (200) to retract the display component (100), and simultaneously drives the lifting assembly (300) to move the free end (120) toward the take-up and release assembly (200); when the drive component (400) rotates in reverse, the drive component (400) drives the take-up and release assembly (200) to release the display component (100), and simultaneously drives the lifting assembly (300) to move the free end (120) away from the take-up and release assembly (200).

2. The display device according to claim 1, characterized in that, The take-up and untake-down assembly (200) is in a fully wound state; In the fully wound state, the unwinding speed of the take-up and unwinding assembly (200) is greater than the driving speed of the lifting assembly (300).

3. The display device according to claim 2, characterized in that, The take-up and take-down assembly (200) also has a half-rolled state; In the half-wound state, the unwinding speed of the take-up and unwinding assembly (200) is greater than or equal to the driving speed of the lifting assembly (300).

4. The display device according to claim 3, characterized in that, The lifting assembly (300) includes a lifting gear (310); A rack structure (131) is formed on the side of the display component (100) away from the retracting component (200). The rack structure (131) extends along the length direction of the display component (100). The lifting gear... (310) meshes with the rack structure (131), and the driving component (400) drives the rack structure (131) through the lifting gear (310) so that the free end (120) moves toward or away from the take-up and put-down assembly (200).

5. The display device according to claim 4, characterized in that, The take-up and take-down assembly (200) includes a drum (210) and a drive gear (220); The drum (210) is coaxially arranged with the drive gear (220), the fixed end (110) is connected to the drum (210), and the drive component (400) drives the drum (210) to rotate through the drive gear (220).

6. The display device according to claim 5, characterized in that, The drive component (400) is driven to the drive gear (220) and the lifting gear (310) via the transmission assembly (500), and the linear velocity of the drive gear (220) is the same as the linear velocity of the lifting gear (310). In the fully wound state, the overall diameter of the roll (210) after winding the display component (100) is greater than the pitch circle diameter of the drive gear (220).

7. The display device according to claim 6, characterized in that, In the half-wound state, the overall diameter of the roll (210) after winding around the display component (100) is greater than or equal to the pitch circle diameter of the drive gear (220).

8. The display device according to claim 7, characterized in that, Both the rack structure (131) and the lifting gear (310) have two; The two rack structures (131) are located on the side of the display assembly (100) away from the retracting assembly (200), and the two rack structures (131) are respectively disposed close to the two end edges along the width direction of the display assembly (100); The two lifting gears (310) are arranged in a one-to-one correspondence with the two rack structures (131) and mesh with each other. The driving component (400) is driven and connected to the two driving gears (220) through the transmission assembly (500).

9. The display device according to claim 8, characterized in that, The drive gear (220) has two; The two drive gears (220) are located at both ends of the drum (210), and the drive component (400) is driven to the two drive gears (220) through the transmission assembly (500).

10. The display device according to claim 7, characterized in that, The transmission assembly (500) includes a transmission shaft (510); A driven gear (511) is coaxially arranged at the middle position of the drive shaft (510). The drive component (400) is connected to a main gear (410). The main gear (410) meshes with the driven gear (511). Both ends of the drive shaft (510) are connected to the corresponding drive gear (220) through a gear set (520) and / or a transmission belt set (530). Both ends of the drive shaft (510) are connected to the corresponding lifting gear (310) through a gear set (520) and / or a transmission belt set (530). The axis of the drive shaft (510) is parallel to the axis of the drum (210), and the drive shaft (510), the drive component (400) and the drum (210) are arranged side by side.

11. The display device according to claim 7, characterized in that, It also includes a guide mechanism for guiding the display assembly (100) when it is extended and retracted.

12. The display device according to claim 7, characterized in that, The display device also includes a housing (600); The housing (600) has a receiving space (610) and an inlet (620), the inlet (620) communicating with the receiving space (610), and the inlet (620) extending in a direction parallel to the axis of the roll (210), the display component (100) being wound into the housing (600) or unfolded out of the housing (600) through the inlet (620); The take-up and release assembly (200), the lifting assembly (300), and the transmission assembly (500) are housed in the accommodating space (610), and the drum (210), the drive gear (220), and the lifting gear (310) are rotatably connected to the housing (600).

13. The display device according to claim 12, characterized in that, The inlet / outlet (620) is located at the bottom of the housing (600); Alternatively, the inlet / outlet (620) may be located on top of the housing (600).

14. The display device according to any one of claims 1 to 3, characterized in that, The display component (100) includes a unidirectional bending component (130) and a flexible screen (140); The unidirectional bending component (130) is configured to bend unidirectionally toward one side of the retracting assembly (200); The flexible screen (140) is connected to the side of the unidirectional bending component (130) near the retracting assembly (200). The flexible screen (140) unfolds synchronously following the unidirectional bending component (130) as it stands upright, and retracts synchronously following the unidirectional bending component (130) as it bends. The lifting assembly (300) is configured to drive the unidirectional bending component (130) so that the free end (120) moves toward or away from the retracting assembly (200).

15. The display device according to claim 14, characterized in that, The unidirectional bending component (130) includes several support units (132); The top and bottom of the bracket unit (132) are provided with a hinge portion (1321) and an abutment portion (1322). The hinge portion (1321) is located at the corner of the bracket unit (132). The hinge portion (1321) is located close to the retracting assembly (200) relative to the abutment portion (1322). The bracket unit (132) is provided with rack portions (1323) at both ends on the side away from the retracting assembly (200). A plurality of the aforementioned support units (132) are arranged side by side in sequence. The top hinge portion (1321) of one of the adjacent support units (132) is hinged to the bottom hinge portion (1321) of the other support unit (132). When the top abutting portion (1322) of one of the adjacent support units (132) abuts to the bottom abutting portion (1322) of the other support unit (132), the adjacent support units (132) are located on the same straight line, and the rack portions (1323) of the adjacent support units (132) form a continuous rack structure (131).

16. A reel mechanism, characterized in that, The reel mechanism includes at least a housing (600), a motor, a drum (210), and a lifting gear (310); The housing (600) has an accommodating space (610) and an inlet / outlet (620), the inlet / outlet (620) being in communication with the accommodating space (610); The drum (210) and the lifting gear (310) are located in the accommodating space (610), and the drum (210) and the lifting gear (310) are rotatably connected to the housing (600). At least one end of the drum (210) is coaxially provided with a drive gear (220). The motor is installed in the accommodating space (610), the motor can rotate forward and reverse, and the motor is driven by the drive gear (220) and the lifting gear (310).

17. The reel mechanism according to claim 16, characterized in that, The drum (210) is used to wind up and release the flexible element, and the lifting gear (310) is used to mesh with the flexible element. The flexible element released by the drum (210) is driven by the lifting gear (310) to extend from the inlet and outlet (620). The linear velocity of the drive gear (220) is the same as that of the lifting gear (310). The drum (210) is in a semi-wound state. In the semi-wound state, the overall diameter of the drum (210) after winding around the flexible part is greater than or equal to the pitch circle diameter of the drive gear (220).

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