Flexible screen curvature adjustment mechanism, support frame and display thereof

Abstract

The present invention provides a flexible screen curvature adjustment mechanism, its support frame, and display. The flexible screen curvature adjustment mechanism includes a connecting base plate, a flexible connector, and an actuator. The connecting base plate is arched, with its ends fixedly connected to the two side edges of the flexible screen. A deformable cavity is enclosed between the connecting base plate and the flexible screen. The first end of the flexible connector is connected to the actuator, and the second end of the flexible connector is fixedly connected to the middle of the flexible screen. The actuator is connected to the middle of the flexible screen via the flexible connector and is used to change the curvature of the flexible screen. The present invention has a compact structure and ingenious design, and can meet the needs of flexible screen curvature adjustment for large or extra-large screens.

Description

Technical Field

[0001] The present invention relates to the technical field of flexible screen support, and in particular to a flexible screen curvature adjustment mechanism, a support frame and a display thereof. Background Art

[0002] With the development of flexible screen technology, many new electronic devices have emerged, such as foldable and rollable phones. Flexible screens typically require a bendable curvature adjustment mechanism to support them and adjust their curvature. Existing flexible screen adjustment and support structures are mostly suitable for small-screen electronic devices such as mobile phones and laptops, but lack a curvature adjustment mechanism suitable for large or extra-large screens. Summary of the Invention

[0003] The object of the present invention is to provide a flexible screen curvature adjustment mechanism, a support frame and a display thereof, so as to solve at least one of the above-mentioned technical problems existing in the prior art.

[0004] In order to solve the above technical problems, the present invention provides a flexible screen curvature adjustment mechanism, comprising: a connecting seat plate, a flexible connecting member and an actuator;

[0005] The connecting base plate is arched, and the two ends of the connecting base plate are fixedly connected to the two side edges of the flexible screen respectively; a deformation cavity is enclosed between the connecting base plate and the flexible screen;

[0006] The first end of the flexible connector is connected to the actuator, and the second end of the flexible connector is fixedly connected to the middle of the flexible screen;

[0007] The actuator is connected to the middle part of the flexible screen through a flexible connector and is used to change the curvature of the flexible screen.

[0008] This application uses an actuator to pull the middle part of the flexible screen, forcing the flexible screen to be concave. When the actuator gradually loosens the flexible connector, the flexible screen gradually unfolds under the action of its own tension.

[0009] Furthermore, it also includes a constant force spring arranged on the connecting seat plate, one end of the constant force spring is connected to the first end of the flexible connector, and the constant force spring is connected to the flexible screen through the flexible connector to maintain the set curvature of the flexible screen.

[0010] That is, the constant force spring uses its own elastic tension to make the flexible screen concave and maintain a bent state. The actuator acts to offset or overcome the elastic tension of the constant force spring, forcing the constant force spring to unfold, that is, the stretched end extends a longer distance. The flexible screen relies on its own tension to gradually restore from bending to straightness.

[0011] Furthermore, the constant force spring includes a drum portion and a tensioning end; the drum portion is rotatably disposed on the connecting seat plate, and the tensioning end is connected to the flexible connecting member.

[0012] Specifically, the reel portion is arranged on the connecting seat plate through a shaft or a spring seat.

[0013] Furthermore, a rotating shaft is provided on the connecting seat plate, and the flexible connecting member is connected to the flexible screen after passing around the rotating shaft.

[0014] Preferably, the flexible connection member is a steel belt, a pull rope, etc.

[0015] Furthermore, it also includes a long strip of connecting strip, which is fixedly arranged on the center line of the connecting seat plate, and the second end of the flexible connector is fixedly connected to the connecting strip.

[0016] Furthermore, the connecting strip is a metal profile with a U-shaped, I-shaped or H-shaped cross-section.

[0017] Furthermore, the connecting slats are arranged vertically, and the connecting slats are at the same height as the flexible screen.

[0018] Furthermore, it further comprises a movable plate, one end of which is fixedly connected to the stretching end, and the other end of which is connected to the second end of the flexible connector;

[0019] The actuator is connected to the movable plate, and drives the flexible connector and the tension end of the constant force spring to move through the movable plate.

[0020] Furthermore, it also includes a connecting rod, the middle part of which is pivotally connected to the connecting seat plate, one end of the connecting rod is connected to the movable plate, and the other end of the connecting rod is connected to the actuator, and the actuator pulls the stretching end through the connecting rod and the movable plate.

[0021] Specifically, one end of the connecting rod is pivotally connected to the movable plate via an elongated hole and an axle structure. While the two can swing relative to each other, the connecting rod can translate relative to the movable plate along the elongated hole, thereby smoothly transferring the swinging motion of the connecting rod to the horizontal movement of the movable plate. The elongated hole and the axle can be provided at one end of the connecting rod and the movable plate, respectively.

[0022] Furthermore, it also includes a temporary locking structure for temporarily locking the connecting rod so that the connecting rod and the stretching end are maintained at a set position;

[0023] The temporary locking structure includes: a first clamping structure and a locking spring provided on the connecting seat plate, and a second clamping structure provided on the connecting rod or the movable plate and adapted to the first clamping structure;

[0024] The locking spring tends to force the first clamping structure to extend into the moving path of the second clamping structure, thereby causing the first clamping structure and the second clamping structure to engage with each other.

[0025] Furthermore, the first clamping structure and the second clamping structure are a clamping slot and a clamping hook, a clamping slot and a clamping pin, etc. that are clamped and matched with each other.

[0026] Preferably, the first clamping structure is a clamping pin slidably provided on the connecting seat plate, and the second clamping structure is a clamping groove adapted to the clamping pin.

[0027] Furthermore, it also includes a locking plate, which is pivotally connected to the connecting seat plate in a swingable manner, and the first clamping structure is provided on the first end of the locking plate.

[0028] Furthermore, both ends of the locking spring are connected to the locking plate and the connecting seat plate respectively, and the locking spring tends to force the locking plate to rotate, thereby making the first clamping structure and the second clamping structure engage with each other.

[0029] Preferably, the actuator is a telescopic mechanism, which includes a main body and a telescopic end. The main body is fixedly arranged on the connecting seat plate, and the telescopic end is connected to the stretching end.

[0030] The telescopic mechanism may be a pneumatic, hydraulic or electric telescopic mechanism.

[0031] Furthermore, it also includes a column and a base, the column is vertically placed on the base; the connecting seat plate is arranged on the column via a connecting shaft.

[0032] Furthermore, the actuator includes: a fixed block and a rotating block which are sleeved on the connecting shaft and can rotate relative to each other;

[0033] The fixing block is fixedly arranged on the connecting seat plate;

[0034] A first cam structure is provided on the end surface of the fixed block; the first cam structure comprises a plurality of first slots arranged at different heights along the axial direction of the rotating block;

[0035] A second cam structure adapted to the first cam structure is provided on one end surface of the rotating block; the second cam structure includes a second protrusion adapted to the first slot; the rotating block is connected to the other end of the connecting rod;

[0036] When the rotating block rotates relative to the fixed block, the fixed block forces the rotating block to move axially through the first cam structure and the second cam structure, and the rotating block drives the connecting rod to swing.

[0037] Furthermore, the fixed block forces the rotating block to move axially through the first cam structure and the second cam structure, and the rotating block moves to a set position (preferably an extreme position) in a direction away from the fixed block. The connecting rod drives the stretching end to move to a locked position through the movable plate, and the first clamping structure and the second clamping structure are engaged to lock the flexible screen in a set curvature state.

[0038] Preferably, the set curvature state is a flat state of the flexible screen.

[0039] Wherein, the rotating block can be directly connected to the connecting shaft.

[0040] More preferably, it further comprises a sliding sleeve, which is slidably mounted on the connecting shaft, and the fixed block, the rotating block and the sliding sleeve are arranged in sequence;

[0041] The other end of the connecting rod is pivotally connected to the sliding sleeve;

[0042] When the fixed block pitches and swings along with the flexible screen, and the rotating block moves away from the fixed block, the rotating block drives the connecting rod to swing through the sliding sleeve.

[0043] Specifically, a long hole is provided on the connecting rod or the sliding sleeve, and a connecting pin is provided on the sliding sleeve or the connecting rod. The connecting pin can be slidably inserted into the long hole, thereby realizing the transmission of the axial linear movement of the sliding sleeve to the swinging action of the connecting rod.

[0044] Preferably, the connecting shaft is fixedly connected to the column; the fixing block is fixedly connected to the connecting seat plate, and the fixing block and the connecting seat plate are rotatably mounted on the connecting shaft;

[0045] The rotating block is fixed relative to the connecting shaft in the circumferential direction and can be translated relative to the connecting shaft in the axial direction;

[0046] When adjusting the pitch viewing angle of the flexible screen, the flexible screen drives the fixed block to rotate through the connecting seat plate. The fixed block rotates relative to the rotating block, and the rotating block is forced to translate axially through the first cam structure and the second cam structure, thereby adjusting the curvature of the flexible screen through the movable plate.

[0047] Preferably, the cross-sectional shape of the connecting part between the connecting shaft and the rotating block can be polygonal, flat, or non-circular such as a chord section, and the cross-sectional shape of the shaft hole of the rotating block can also be polygonal, flat, or non-circular such as a chord section, so as to achieve the purpose of circumferential fixation.

[0048] Furthermore, in the left and right screen width directions, the two groups of constant force springs, movable plates and actuators are arranged symmetrically on the left and right.

[0049] Furthermore, the locking plate is L-shaped as a whole, and the first end of the locking plate is connected to the left or right movable plate or the second clamping structure of the connecting rod through the first clamping structure;

[0050] The second end of the locking plate is arranged on the axial moving path of the rotating block on the right or left side;

[0051] When the rotating block moves toward the fixed block, the rotating block abuts against the second end of the locking plate and pushes the locking plate to reverse, thereby releasing the locking of the movable plate and the connecting rod.

[0052] Furthermore, a boss structure is provided on the rotating block, which is used for the rotating block to touch the second end of the locking plate when the rotating block moves toward the fixed block.

[0053] Furthermore, an execution spring is included. The execution spring is sleeved on the connecting shaft and between the sliding sleeve and the rotating block, tending to force the sliding sleeve and the rotating block to move in opposite directions.

[0054] The constant force spring tends to force the sliding sleeve to abut against the rotating block through the movable plate and the connecting rod, and also tends to force the rotating block to always abut against the fixed block.

[0055] When adjusting the pitch viewing angle of the flexible screen, the flexible screen drives the fixed block to rotate forward through the connecting seat plate, and the fixed block forces the rotating block to translate away from the fixed block through the first cam structure and the second cam structure. The rotating block forces the connecting rod to swing forward through the sliding sleeve, further stretching the stretching end, and the flexible screen gradually flattens (that is, becomes a flat screen) under the action of its own tension; at the same time, the first clamping structure and the second clamping structure are engaged and matched to lock the movable plate, the connecting rod and the constant force spring, so that the flexible screen remains in a flat state.

[0056] When the flexible screen drives the fixed block to rotate in the opposite direction through the connecting seat plate, the fixed block rotates relative to the rotating block. The rotating block moves toward the fixed block under the push of the actuator spring. During the movement, the rotating block touches the second end of the locking plate and forces the locking plate to reverse, thereby releasing the lock on the movable plate, the connecting rod, and the constant force spring. At this moment, the sliding sleeve remains stationary under the reverse thrust of the actuator spring and does not move with the rotating block, that is, the connecting rod and the movable plate remain stationary, making it easier for the first clamping structure to disengage from the second clamping structure and release the lock. Then, under the action of the constant force spring's own spring force, the tensile end contracts and pulls the flexible screen through the flexible connector, increasing the curvature of the flexible screen (the flexible screen bends and becomes a curved screen). When the tension of the flexible screen and the spring force of the constant force spring are equivalent or equal, the two reach a state of equilibrium, and the constant force spring can maintain the curvature state set for the flexible screen.

[0057] Furthermore, the four groups of constant force springs and the movable plate are arranged in a rectangular shape;

[0058] The two sets of actuators are arranged symmetrically on the left and right; each set of actuators synchronously drives the upper and lower groups of constant force springs and the movable plate to move.

[0059] Furthermore, the two sets of the fixed blocks, rotating blocks and sliding sleeves are arranged symmetrically on the left and right, and the same sliding sleeve is respectively connected to the upper and lower connecting rods.

[0060] The second aspect of the present application discloses a support frame with the above-mentioned flexible screen curvature adjustment mechanism.

[0061] The third aspect of the present application discloses a display with the above-mentioned flexible screen curvature adjustment mechanism.

[0062] By adopting the above technical solution, the present invention has the following beneficial effects:

[0063] The present invention provides a flexible screen curvature adjustment mechanism, a support frame, and a display, which have a compact structure and an ingenious design and can meet the need for adjusting the curvature of flexible screens of large or ultra-large screens. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0065] Figure 1 A three-dimensional diagram of a display with a flexible screen curvature adjustment mechanism provided by an embodiment of the present invention;

[0066] Figure 2 for Figure 1 The front view of the flexible screen curvature adjustment mechanism shown;

[0067] Figure 3 for Figure 1 A three-dimensional diagram of the flexible screen curvature adjustment mechanism shown;

[0068] Figure 4 for Figure 3 Partial view of point A in the figure.

[0069] Reference numerals:

[0070] 1-flexible screen; 2-connecting seat plate; 3-axis body; 4-constant force spring; 41-tension end; 42-reel part; 43-flexible connector; 44-rotating shaft; 45-movable plate; 46-connecting rod; 47-locking spring; 48-locking plate; 5-connecting strip; 6-actuator; 61-fixed block; 62-rotating block; 63-connecting shaft; 7-sleeve; 10-base; 11-column. DETAILED DESCRIPTION

[0071] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0072] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0073] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0074] The present invention will be further explained below with reference to specific embodiments.

[0075] like Figure 1-4 As shown, this embodiment provides a flexible screen curvature adjustment mechanism, including: a connecting seat plate 2, a flexible connecting member 43 and an actuator 6.

[0076] The connecting seat plate 2 is bow-shaped, and the two ends of the connecting seat plate 2 are fixedly connected to the two side edges of the flexible screen 1 respectively; a deformation cavity is enclosed between the connecting seat plate 2 and the flexible screen 1; the first end of the flexible connector 43 is connected to the actuator 6, and the second end of the flexible connector 43 is fixedly connected to the middle part of the flexible screen 1; the actuator 6 is connected to the middle part of the flexible screen 1 through the flexible connector 43, and is used to change the curvature of the flexible screen 1.

[0077] In this application, the middle part of the flexible screen 1 is pulled by the actuator 6, forcing the flexible screen 1 to be concave. When the actuator 6 gradually loosens the flexible connector 43, the flexible screen 1 gradually unfolds under the action of its own tension.

[0078] More preferably, this embodiment further includes a constant force spring 4 disposed on the connecting base plate 2, one end of the constant force spring 4 being connected to the first end of the flexible connector 43. The constant force spring 4 is connected to the flexible screen 1 via the flexible connector 43, and is used to maintain the set curvature of the flexible screen 1. That is, the constant force spring 4 uses its own elastic tension to cause the flexible screen 1 to concave and maintain a curved state. The actuator 6 acts to offset or overcome the elastic tension of the constant force spring 4, forcing the constant force spring 4 to expand, that is, the stretched end 41 extends a longer distance, and the flexible screen 1 gradually returns to a straight state from the curve due to its own tension.

[0079] The constant force spring 4 includes a drum portion 42 and a tension end 41; the drum portion 42 is rotatably disposed on the connecting seat plate 2, and the tension end 41 is connected to the flexible connector 43. Specifically, the drum portion 42 is disposed on the connecting seat plate 2 via the shaft 3 or the spring seat.

[0080] Furthermore, a rotating shaft 44 is provided on the connecting seat plate 2, and the flexible connecting member 43 is connected to the flexible screen 1 after passing through the rotating shaft 44. Preferably, the flexible connecting member 43 is a steel belt, a pull rope, etc.

[0081] Furthermore, the flexible connector 43 further includes a long connecting strip 5, which is fixedly disposed on the centerline of the connecting base plate 2. The second end of the flexible connector 43 is fixedly connected to the connecting strip 5. The connecting strip 5 is a metal profile with a U-shaped, I-shaped, or H-shaped cross-section. The connecting strip 5 is vertically disposed and aligned with the height of the flexible screen 1.

[0082] This embodiment may optionally further include a movable plate 45, one end of which is fixedly connected to the stretching end 41, and the other end of the movable plate 45 is connected to the second end of the flexible connector 43; the actuator 6 is connected to the movable plate 45, and drives the flexible connector and the stretching end 41 of the constant force spring 4 to move through the movable plate 45.

[0083] This embodiment also includes a connecting rod 46, the middle part of which is pivotally connected to the connecting seat plate 2, one end of the connecting rod 46 is connected to the movable plate 45, and the other end of the connecting rod 46 is connected to the actuator 6, and the actuator 6 pulls the stretching end 41 through the connecting rod 46 and the movable plate 45.

[0084] Specifically, one end of the connecting rod 46 is pivotally connected to the movable plate 45 via a long hole and an axle structure. While the two can swing relative to each other, the connecting rod 46 can translate relative to the movable plate 45 along the long hole, thereby smoothly transferring the swinging motion of the connecting rod 46 to the horizontal movement of the movable plate 45. The long hole and the axle can be provided on one end of the connecting rod 46 and the movable plate 45, respectively.

[0085] More preferably, this embodiment may further include a temporary locking structure for temporarily locking the connecting rod 46 so that the connecting rod 46 and the stretching end 41 remain in a set position; the temporary locking structure includes: a first clamping structure and a locking spring 47 provided on the connecting seat plate 2, and a second clamping structure provided on the connecting rod 46 or the movable plate 45 and adapted to the first clamping structure; the locking spring 47 tends to force the first clamping structure to extend into the moving path of the second clamping structure, thereby enabling the first clamping structure and the second clamping structure to engage with each other. The first clamping structure and the second clamping structure are mutually engaged slots and hooks, slots and pins, etc. For example, the first clamping structure is a pin slidably provided on the connecting seat plate 2, and the second clamping structure is a slot adapted to the pin.

[0086] The temporary locking structure more preferably includes a locking plate 48, which is pivotally connected to the connecting base plate 2. The first engaging structure is provided on a first end of the locking plate 48. The two ends of the locking spring 47 are respectively connected to the locking plate 48 and the connecting base plate 2. The locking spring 47 tends to force the locking plate 48 to rotate, thereby causing the first engaging structure to engage with the second engaging structure.

[0087] Preferably, the actuator 6 is a telescopic mechanism, which includes a main body and a telescopic end, wherein the main body is fixedly arranged on the connecting base plate 2, and the telescopic end is connected to the stretching end 41. The telescopic mechanism can be a pneumatic, hydraulic or electric telescopic mechanism.

[0088] This embodiment further includes a column 11 and a base 10 , wherein the column 11 is vertically disposed on the base 10 ; and the connecting seat plate 2 is disposed on the column 11 via a connecting shaft 63 .

[0089] An embodiment of the actuator 6 includes: a fixed block 61 and a rotating block 62 that are mounted on the connecting shaft 63 and can rotate relative to each other; the fixed block 61 is fixedly arranged on the connecting seat plate 2; a first cam structure is provided on the end face of the fixed block 61; the first cam structure includes a plurality of first clamping grooves arranged at different heights along the axial direction of the rotating block 62; a second cam structure adapted to the first cam structure is provided on one end face of the rotating block 62; the second cam structure includes a second protrusion adapted to the first clamping groove; the rotating block 62 is connected to the other end of the connecting rod 46; when the rotating block 62 rotates relative to the fixed block 61, the fixed block 61 forces the rotating block 62 to move axially through the first cam structure and the second cam structure, and the rotating block 62 drives the connecting rod 46 to swing.

[0090] The fixed block 61 forces the rotating block 62 to move axially through the first cam structure and the second cam structure, and the rotating block 62 moves to a set position (preferably an extreme position) away from the fixed block 61. The connecting rod 46 drives the stretching end 41 to move to a locked position through the movable plate 45. The first clamping structure and the second clamping structure are engaged to lock the flexible screen 1 in a set curvature state.

[0091] Preferably, the set curvature state is the flat state of the flexible screen 1. The rotating block 62 can be directly connected to the connecting shaft.

[0092] More preferably, it further includes a sliding sleeve 7, which can be slidably mounted on the connecting shaft 63, and the fixed block 61, the rotating block 62 and the sliding sleeve 7 are arranged in sequence; the other end of the connecting rod 46 is pivotally connected to the sliding sleeve 7; the fixed block 61 pitches and swings with the flexible screen 1, and when the rotating block 62 moves away from the fixed block 61, the rotating block 62 drives the connecting rod 46 to swing through the sliding sleeve 7.

[0093] Specifically, a long hole is provided on the connecting rod 46 or the sliding sleeve 7, and a connecting pin is provided on the sliding sleeve 7 or the connecting rod 46. The connecting pin can be slidably inserted into the long hole, thereby realizing the transmission of the axial linear movement of the sliding sleeve 7 to the swinging action of the connecting rod 46.

[0094] Preferably, the connecting shaft 63 is relatively fixedly connected to the column 11; the fixed block 61 is fixedly connected to the connecting seat plate 2, and the fixed block 61 and the connecting seat plate 2 are rotatably mounted on the connecting shaft 63; the rotating block 62 is relatively fixed to the connecting shaft 63 in the circumferential direction and can be translated relative to the connecting shaft 63 in the axial direction.

[0095] When adjusting the pitch viewing angle of the flexible screen 1, the flexible screen 1 drives the fixed block 61 to rotate through the connecting seat plate 2, the fixed block 61 rotates relative to the rotating block 62, and the first cam structure and the second cam structure force the rotating block 62 to translate axially, and then the curvature of the flexible screen 1 is adjusted through the movable plate 45.

[0096] Preferably, the cross-sectional shape of the connecting portion between the connecting shaft 63 and the rotating block 62 can be a polygon, a flat type, or a non-circular type such as a chord section, and the cross-sectional shape of the shaft hole of the rotating block 62 can also be a polygon, a flat type, or a non-circular type such as a chord section, thereby achieving the purpose of circumferential fixation.

[0097] The two sets of constant-force springs 4, movable plates 45, and actuators 6 are arranged symmetrically across the left and right screen widths. The locking plate 48 is L-shaped overall, with its first end connected to the left or right movable plate 45 or the second clamping structure of the connecting rod 46 via the first clamping structure. The second end of the locking plate 48 is positioned along the axial movement path of the right or left rotating block 62. When the rotating block 62 moves toward the fixed block 61, it abuts against the second end of the locking plate 48 and pushes the locking plate 48 in reverse, thereby unlocking the movable plate 45 and the connecting rod 46.

[0098] The rotating block 62 may be provided with a boss structure for contacting the second end of the locking plate 48 when the rotating block 62 moves toward the fixed block 61 .

[0099] More preferably, an actuating spring (not shown) is further included, which is sleeved on the connecting shaft 63 and between the sliding sleeve 7 and the rotating block 62, tending to force the sliding sleeve 7 and the rotating block 62 to move in opposite directions.

[0100] The constant force spring 4 tends to force the sliding sleeve 7 to abut against the rotating block 62 through the movable plate 45 and the connecting rod 46 , and also tends to force the rotating block 62 to always abut against the fixed block 61 .

[0101] When adjusting the pitch viewing angle of the flexible screen 1, the flexible screen 1 drives the fixed block 61 to rotate forward through the connecting seat plate 2, and the fixed block 61 forces the rotating block 62 to translate in the direction away from the fixed block 61 through the first cam structure and the second cam structure. The rotating block 62 forces the connecting rod 46 to swing forward through the sliding sleeve 7, further stretching the stretching end 41, and the flexible screen 1 gradually flattens (that is, becomes a flat screen) under the action of its own tension; at the same time, the first clamping structure and the second clamping structure are engaged and matched to lock the movable plate 45, the connecting rod 46 and the constant force spring 4, so that the flexible screen 1 remains in a flat state.

[0102] When the flexible screen 1 drives the fixed block 61 to rotate in the opposite direction via the connecting base plate 2, the fixed block 61 rotates relative to the rotating block 62. The rotating block 62, pushed by the actuator spring, moves toward the fixed block 61. During this movement, the rotating block 62 contacts the second end of the locking plate 48, forcing the locking plate 48 to reverse, thereby releasing the lock on the movable plate 45, the connecting rod 46, and the constant-force spring 4. At this moment, the sliding sleeve 7 remains stationary under the reverse thrust of the actuator spring and does not move with the rotating block 62. That is, the connecting rod 46 and the movable plate 45 remain stationary, facilitating the disengagement of the first engaging structure from the second engaging structure and releasing the lock. Then, under the spring force of the constant-force spring 4 itself, the tensile end 41 contracts and pulls the flexible screen 1 through the flexible connector 43, increasing the curvature of the flexible screen 1 (the flexible screen 1 bends and becomes a curved screen). When the tension of the flexible screen 1 and the spring force of the constant-force spring 4 are equal or equivalent, they reach a state of equilibrium, and the constant-force spring 4 can maintain the set curvature of the flexible screen 1.

[0103] Preferably, the four sets of constant-force springs 4 and the movable plates 45 are arranged in a rectangular shape; the two sets of actuators 6 are arranged symmetrically; each set of actuators 6 synchronously drives the upper and lower sets of constant-force springs 4 and the movable plates 45. The two sets of fixed blocks 61, rotating blocks 62, and sliding sleeves 7 are arranged symmetrically, and the same sliding sleeve 7 is connected to the upper and lower connecting rods 46, respectively.

[0104] The second aspect of the present application discloses a support frame with the above-mentioned flexible screen 1 curvature adjustment mechanism.

[0105] The third aspect of the present application discloses a display with the above-mentioned flexible screen 1 curvature adjustment mechanism.

[0106] The present invention has a compact structure and an ingenious design, and can meet the need for adjusting the curvature of the flexible screen 1 of a large or ultra-large screen.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flexible screen curvature adjustment mechanism, characterized in that: Including: connecting seat plate, flexible connector and actuator; The connecting base plate is arched, and the two ends of the connecting base plate are fixedly connected to the two side edges of the flexible screen respectively; a deformation cavity is enclosed between the connecting base plate and the flexible screen; The first end of the flexible connector is connected to the actuator, and the second end of the flexible connector is fixedly connected to the middle of the flexible screen; The actuator is connected to the middle part of the flexible screen through a flexible connector, and is used to change the curvature of the flexible screen; It also includes a constant force spring provided on the connecting base plate, one end of the constant force spring is connected to the first end of the flexible connector, and the constant force spring is connected to the flexible screen through the flexible connector to maintain the set curvature of the flexible screen; The connecting seat plate is provided with a rotating shaft, and the flexible connecting member is connected to the flexible screen after passing around the rotating shaft; It also includes a long strip of connecting strip, which is fixedly arranged on the center line of the connecting seat plate, and the second end of the flexible connector is fixedly connected to the connecting strip.

2. The flexible screen curvature adjustment mechanism according to claim 1, characterized in that: The constant force spring includes a drum portion and a tensioning end; the drum portion is rotatably disposed on the connecting seat plate, and the tensioning end is connected to the flexible connecting member.

3. The flexible screen curvature adjustment mechanism according to claim 1, characterized in that: The flexible connection piece is a steel belt or a pull rope.

4. The flexible screen curvature adjustment mechanism according to claim 1, characterized in that: The connecting strips are metal profiles with a U-shaped, I-shaped or H-shaped cross section.

5. The flexible screen curvature adjustment mechanism according to claim 1, characterized in that: The connecting strips are arranged vertically, and the connecting strips are consistent in height with the flexible screen.

6. The flexible screen curvature adjustment mechanism according to claim 2, characterized in that: It also includes a movable plate, one end of which is fixedly connected to the stretching end, and the other end of which is connected to the second end of the flexible connector; The actuator is connected to the movable plate, and drives the flexible connector and the tension end of the constant force spring to move through the movable plate.

7. The flexible screen curvature adjustment mechanism according to claim 6, characterized in that: It also includes a connecting rod, the middle part of which is pivotally connected to the connecting seat plate, one end of the connecting rod is connected to the movable plate, and the other end of the connecting rod is connected to the actuator, and the actuator pulls the stretching end through the connecting rod and the movable plate.

8. The flexible screen curvature adjustment mechanism according to claim 7, characterized in that: Also included is a temporary locking structure for temporarily locking the connecting rod so that the connecting rod and the stretching end remain in a set position; The temporary locking structure includes: a first clamping structure and a locking spring provided on the connecting seat plate, and a second clamping structure provided on the connecting rod or the movable plate and adapted to the first clamping structure; The locking spring tends to force the first clamping structure to extend into the moving path of the second clamping structure, thereby causing the first clamping structure and the second clamping structure to engage with each other.

9. The flexible screen curvature adjustment mechanism according to claim 8, characterized in that: It also includes a locking plate, which is pivotally connected to the connecting seat plate in a swingable manner, and the first clamping structure is provided on the first end of the locking plate.

10. The flexible screen curvature adjustment mechanism according to claim 9, characterized in that: The two ends of the locking spring are respectively connected to the locking plate and the connecting seat plate. The locking spring tends to force the locking plate to rotate, thereby making the first clamping structure engage with the second clamping structure.

11. The flexible screen curvature adjustment mechanism according to claim 2, characterized in that: The actuator is a telescopic mechanism, which includes a main body and a telescopic end. The main body is fixedly arranged on the connecting seat plate, and the telescopic end is connected to the stretching end.

12. The flexible screen curvature adjustment mechanism according to claim 9, characterized in that: It also includes a column and a base, wherein the column is vertically arranged on the base; and the connecting seat plate is arranged on the column through a connecting shaft.

13. The flexible screen curvature adjustment mechanism according to claim 12, characterized in that: The actuator comprises: a fixed block and a rotating block which are sleeved on the connecting shaft and can rotate relative to each other; The fixing block is fixedly arranged on the connecting seat plate; A first cam structure is provided on the end surface of the fixed block; the first cam structure comprises a plurality of first slots arranged at different heights along the axial direction of the rotating block; A second cam structure adapted to the first cam structure is provided on one end surface of the rotating block; the second cam structure includes a second protrusion adapted to the first slot; the rotating block is connected to the other end of the connecting rod; When the rotating block rotates relative to the fixed block, the fixed block forces the rotating block to move axially through the first cam structure and the second cam structure, and the rotating block drives the connecting rod to swing.

14. The flexible screen curvature adjustment mechanism according to claim 13, characterized in that: The fixed block forces the rotating block to move axially through the first cam structure and the second cam structure, and the rotating block moves to the set position in the direction away from the fixed block. The connecting rod drives the stretching end to move to the locking position through the movable plate, and the first clamping structure and the second clamping structure are engaged to lock the flexible screen in the set curvature state.

15. The flexible screen curvature adjustment mechanism according to claim 14, characterized in that: It also includes a sliding sleeve, which is slidably mounted on the connecting shaft, and the fixed block, the rotating block and the sliding sleeve are arranged in sequence; The other end of the connecting rod is pivotally connected to the sliding sleeve; When the fixed block pitches and swings along with the flexible screen, and the rotating block moves away from the fixed block, the rotating block drives the connecting rod to swing through the sliding sleeve.

16. The flexible screen curvature adjustment mechanism according to claim 15, characterized in that: The connecting shaft is fixedly connected to the column; the fixing block is fixedly connected to the connecting base plate, and the fixing block and the connecting base plate are rotatably mounted on the connecting shaft; The rotating block is fixed relative to the connecting shaft in the circumferential direction and can be translated relative to the connecting shaft in the axial direction; When adjusting the pitch viewing angle of the flexible screen, the flexible screen drives the fixed block to rotate through the connecting seat plate. The fixed block rotates relative to the rotating block, and the rotating block is forced to translate axially through the first cam structure and the second cam structure, thereby adjusting the curvature of the flexible screen through the movable plate.

17. The flexible screen curvature adjustment mechanism according to claim 16, characterized in that: In the left and right screen width directions, the two groups of constant force springs, movable plates and actuators are arranged symmetrically on the left and right.

18. The flexible screen curvature adjustment mechanism according to claim 17, characterized in that: The locking plate is L-shaped as a whole, and the first end of the locking plate is connected to the left or right movable plate or the second clamping structure of the connecting rod through the first clamping structure; The second end of the locking plate is arranged on the axial moving path of the rotating block on the right or left side; When the rotating block moves toward the fixed block, the rotating block abuts against the second end of the locking plate and pushes the locking plate to reverse, thereby releasing the locking of the movable plate and the connecting rod.

19. The flexible screen curvature adjustment mechanism according to claim 18, characterized in that: The rotating block is provided with a boss structure, which is used for the rotating block to touch the second end of the locking plate when the rotating block moves toward the fixed block.

20. The flexible screen curvature adjustment mechanism according to claim 15, characterized in that: The utility model further comprises an execution spring, which is sleeved on the connecting shaft and between the sliding sleeve and the rotating block, and tends to force the sliding sleeve and the rotating block to move in opposite directions.

21. The flexible screen curvature adjustment mechanism according to claim 6, characterized in that: The four groups of constant force springs and the movable plate are arranged in a rectangular shape; The two sets of actuators are arranged symmetrically on the left and right; each set of actuators synchronously drives the upper and lower groups of constant force springs and the movable plate to move.

22. The flexible screen curvature adjustment mechanism according to claim 15, characterized in that: The two sets of fixed blocks, rotating blocks and sliding sleeves are arranged symmetrically on the left and right, and the same sliding sleeve is respectively connected to the upper and lower connecting rods.

23. A support frame having the flexible screen curvature adjustment mechanism according to any one of claims 1 to 22.

24. A display having a flexible screen curvature adjustment mechanism according to any one of claims 1 to 22.

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