LED display screen cam lock and display device

Abstract

The application discloses an LED display screen arc lock and a display device, and relates to the technical field of LED display. The LED display screen arc lock comprises a lock sleeve, a lock rod, a moving positioning piece and a rotating adjusting piece. The lock rod is movably embedded in the lock sleeve. The moving positioning piece is movably connected to the lock rod. The moving positioning piece is connected to the lock sleeve. The rotating adjusting piece is rotationally matched with the moving positioning piece. The rotating adjusting piece is used for driving the moving positioning piece and the lock sleeve to move relative to the lock rod. The above-mentioned LED display screen arc lock solves the problem that the traditional arc lock cannot meet the arc adjusting requirement of the super-large-area LED display screen body.

Description

Technical Field

[0001] This application relates to the field of LED display technology, and in particular to an LED display curvature lock and display device. Background Technology

[0002] With the rapid development of the LED industry, curved LED display products are becoming increasingly popular in daily life, especially in fields such as stage performances and advertising, where they have broad application prospects.

[0003] Current technologies commonly use curvature locks to adjust and fix the curvature of LED display screens. However, due to structural limitations, current curvature locks can only adjust the curvature to a minimum of 1 degree (commonly 5 degrees or 2.5 degrees). For ultra-large LED displays, such as those with a horizontal span of 20m (typically composed of 40 500mm wide cabinets joined end-to-end): Figure 1 As shown, if the adjustment angle of a single box is 0.3 degrees, the overall arc height can reach 523mm; Figure 2 As shown, if the adjustment angle of a single box is 0.15 degrees, the overall arc height can be reduced to 261mm; Figure 3 As shown, the existing minimum scale of 1 degree corresponds to an arc height of up to 1.809m, which significantly increases the space occupied and wastes a lot of the audience's viewing area. Moreover, the excessive curvature of the arc surface can no longer meet the stringent requirements of near-planar micro-arcs for indoor close-up, immersive or irregular splicing scenes. Utility Model Content

[0004] The purpose of this application is to provide an LED display screen curvature lock and display device, which solves the problem that traditional curvature locks can no longer meet the curvature adjustment requirements of ultra-large area LED display screens.

[0005] To achieve the above objectives, this application provides an LED display screen curvature lock, comprising:

[0006] Lock;

[0007] The locking bar is movably fitted into the lock sleeve;

[0008] The movable positioning element is movably connected to the locking rod and connected to the locking sleeve;

[0009] The rotating adjustment component, in rotational cooperation with the movable positioning component, is used to drive the movable positioning component and the locking sleeve to move relative to the locking rod.

[0010] In some embodiments, the rotating adjustment member and the movable positioning member are threadedly connected. The LED display arc lock also includes an adjustment seat, which is fixed to the locking rod. The rotating adjustment member is rotatably connected to the adjustment seat. The movable positioning member includes a connecting shaft, which passes through and cooperates with the adjustment seat and the rotating adjustment member. The connecting shaft is provided with a threaded section that is threadedly connected to the rotating adjustment member.

[0011] In some embodiments, the movable positioning member further includes a positioning plate connected to the connecting shaft, the locking rod is provided with an adjustment hole, and the LED display arc lock further includes a detachable connector, which is fitted through the adjustment hole and connected to the positioning plate, so that the positioning plate can move within the limitation range of the adjustment hole.

[0012] In some embodiments, the LED display curvature lock further includes a limiting shaft, and the rotating adjustment member is provided with a limiting groove. The limiting shaft passes through the adjustment seat and is embedded in the limiting groove to limit the rotation of the rotating adjustment member within a preset angle range.

[0013] In some embodiments, the LED display arc lock further includes a stop positioning member and a stop elastic member. The stop elastic member abuts between the lock rod and the stop positioning member, and the stop elastic member is used to provide elastic force so that the stop positioning member tends to move closer to the rotation adjustment member.

[0014] The rotating adjustment component is provided with abutment positioning grooves distributed along the circumference, and the abutment positioning component is positioned and matched with the abutment positioning grooves.

[0015] In some embodiments, the rotating adjustment member is further provided with a circumferential positioning surface and a circumferential toothed surface, with the abutment positioning groove located on the circumferential positioning surface and the circumferential toothed surface located on both sides of the circumferential positioning surface along the axial direction.

[0016] In some embodiments, the LED display curvature lock further includes:

[0017] The handle is rotatably connected to the lock sleeve;

[0018] The rotating component engages with the locking rod and is used to drive the locking rod to move. The rotating component is provided with a limiting groove.

[0019] The positioning component is snapped onto the handle and engages with the rotating component. It is used to embed the movable positioning component to position the movable positioning component, and also to move relative to the handle while following the rotation of the handle to release the positioning of the movable positioning component.

[0020] A limiting member is provided on the positioning assembly and is used to move along the limiting groove during the first rotation phase of the positioning assembly to push the positioning assembly away from the moving positioning member. It is also used to push the rotating member to rotate during the second rotation phase of the positioning assembly.

[0021] The reset elastic element has its two ends abutting against the positioning component and the locking sleeve, respectively, to provide elastic force so that the positioning component tends to embed into the moving positioning element.

[0022] In some embodiments, the movable positioning member is provided with a positioning hole, and the positioning component includes:

[0023] The positioning pin passes through the rotating part and has an insert end that mates with the positioning hole;

[0024] A toggle element, connected to a locating pin, is used to disengage the locating pin from the locating hole;

[0025] The actuating element has a locking protrusion, and the handle has a locking groove. The locking groove and the locking protrusion engage with each other so that the handle drives the actuating element to rotate and the actuating element moves relative to the handle.

[0026] In some embodiments, the limiting groove includes a first spiral groove and a second spiral groove. Both the first spiral groove and the second spiral groove have a first position and a second position. The first spiral groove and the second spiral groove are connected at the first position. When the limiting member is in the first position, the positioning component is embedded in the moving positioning member. When the limiting member is in the second position, the positioning component is disengaged from the moving positioning member.

[0027] This application also provides a display device, including an LED display unit and an LED display cabinet. The LED display cabinet is used to install the LED display unit and also includes an LED display curvature lock for adjusting and fixing the curvature of the LED display unit, as described above.

[0028] Compared to the aforementioned background technology, the LED display screen curvature lock provided in this application includes a lock sleeve, a lock rod, a movable positioning component, and a rotation adjustment component. The lock rod is movably embedded in the lock sleeve, the movable positioning component is movably connected to the lock rod and connected to the lock sleeve, and the rotation adjustment component rotates in conjunction with the movable positioning component. The rotation adjustment component converts the rotational motion of the movable positioning component into axial movement, thereby causing the movable positioning component and the lock sleeve to move relative to the lock rod. During curvature adjustment, the rotation adjustment component is operated to move the movable positioning component and the lock sleeve relative to the lock rod, thus completing the curvature adjustment of the LED display screen. Compared to traditional curvature locks, because the rotation adjustment component and the movable positioning component use a rotation-movement transmission pair, which can generally convert large-angle handwheel movements into small axial displacements, a faster curvature adjustment operation with higher precision can be achieved by setting the appropriate lead. Furthermore, the entire curvature adjustment process is simple, convenient, and efficient. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 This is a splicing diagram of 40 boxes, each 500mm wide, with a 0.3-degree arc, in the existing technology.

[0031] Figure 2This is a splicing diagram of 40 boxes, each 500mm wide, with a 0.15-degree arc, in the existing technology.

[0032] Figure 3 This is a diagram showing the splicing of 40 boxes, each 500mm wide, with a 1-degree arc, in the existing technology.

[0033] Figure 4 The isometric view of the LED display screen curvature lock in this embodiment of the application. Figure 1 .

[0034] Figure 5 The isometric view of the LED display screen curvature lock in this embodiment of the application. Figure 2 .

[0035] Figure 6 for Figure 5 The main view.

[0036] Figure 7 for Figure 6 Sectional view of AA.

[0037] Figure 8 for Figure 6 A sectional view of DD.

[0038] Figure 9 for Figure 8 A cross-sectional view of BB.

[0039] Figure 10 for Figure 9 An enlarged schematic diagram of section E in the middle.

[0040] Figure 11 for Figure 9 Enlarged schematic diagram of section F in the middle.

[0041] Figure 12 This is an exploded view of the LED display screen arc lock in the embodiment of this application.

[0042] Figure 13 for Figure 12 The diagram shows the movable positioning component in the curved lock of the LED display screen.

[0043] Figure 14 for Figure 12 The diagram shows the rotating adjustment component in the LED display screen arc lock. Figure 1 .

[0044] Figure 15 for Figure 12 The diagram shows the rotating adjustment component in the LED display screen arc lock. Figure 2 .

[0045] Figure 16 for Figure 12 The diagram shows the adjustment base in the arc lock of the LED display screen.

[0046] Figure 17 for Figure 12 The diagram shows the rotating component in the LED display screen arc lock. Figure 1 .

[0047] Figure 18 for Figure 12 The diagram shows the rotating component in the LED display screen arc lock. Figure 2 .

[0048] Figure 19 for Figure 12 The diagram shows the structure of the positioning pin in the LED display screen arc lock.

[0049] Figure 20 for Figure 12 The diagram shows the structure of the toggle mechanism in the LED display screen's arc lock.

[0050] Figure 21 This is a schematic diagram of the structure of the display device in the embodiments of this application.

[0051] in:

[0052] 1-LED display screen curvature lock;

[0053] 2-LED display unit;

[0054] 3-LED display cabinet;

[0055] 10-Lock sleeve, 11-First sliding cover, 12-Second sliding cover, 1201-Mounting groove, 1202-Through hole, 1203-Rotary connection protrusion;

[0056] 20-Locking rod, 21-Adjusting hole, 22-Rack;

[0057] 30-Moving positioning component, 31-Connecting shaft, 311-Threaded section, 32-Positioning plate, 321-Positioning hole;

[0058] 40-Rotation adjustment component, 41-Limiting groove, 42-Circumferential positioning surface, 421-Abutting positioning groove, 43-Circumferential tooth surface;

[0059] 50-Adjustable seat;

[0060] 60 - Detachable connector;

[0061] 70 - Limit axis;

[0062] 80-Abutment positioning component;

[0063] 90-Anti-elastic component;

[0064] 100 - Handle, 101 - Snap-in slot, 102 - Rotary connection slot;

[0065] 110-Rotating component, 111-Limiting groove, 1111-First spiral groove, 1112-Second spiral groove, 112-Abutting hole, 113-Gear tooth section;

[0066] 120 - Positioning component, 121 - Positioning pin, 1211 - Embedded end, 122 - Toggle element, 1221 - Snap-fit ​​protrusion;

[0067] 130 - Limiting component;

[0068] 140 - Reset elastic element;

[0069] 150 - Top-tier item;

[0070] 160 - Supporting elastic element;

[0071] 170-Connector;

[0072] 1000 - Display device. Detailed Implementation

[0073] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0074] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0075] The LED display screen curvature lock 1 provided in this application embodiment is used to adjust and fix the curvature of the LED display unit 2. The LED display unit 2 is composed of multiple LED display modules that are hinged together. The hinged connection allows the angle between adjacent LED display modules to be changed, thereby enabling the LED display modules to change their curvature and achieve flexibility.

[0076] Please see Figures 4 to 12 The LED display arc lock 1 includes a lock sleeve 10, a lock rod 20, a moving positioning component 30, and a rotating adjustment component 40.

[0077] The locking rod 20 is movably fitted into the locking sleeve 10, and the locking rod 20 can move within the locking sleeve 10 along a first direction. By moving the locking rod 20 relative to the locking sleeve 10, the extension length of the locking rod 20 relative to the locking sleeve 10 is changed, thereby realizing the large-size curvature adjustment of the LED display unit 2.

[0078] The movable positioning member 30 is movably connected to the locking rod 20. The movable positioning member 30 can move relative to the locking rod 20 in a first direction, and at the same time, the movable positioning member 30 is connected to the locking sleeve 10.

[0079] The so-called first direction can be as follows: Figure 4 The X-axis direction is shown.

[0080] The rotating adjustment component 40 is rotatably engaged with the movable positioning component 30. Specifically, the rotating adjustment component 40 is a knob or an adjustment wheel. The rotating adjustment component 40 is used to convert its rotational motion into the axial movement of the movable positioning component 30, so as to drive the movable positioning component 30 and the locking sleeve 10 to move relative to the locking rod 20, so as to realize the small-size arc adjustment of the LED display unit 2.

[0081] During arc adjustment, the rotating adjustment component 40 is operated to move the moving positioning component 30 and the locking sleeve 10 relative to the locking rod 20, thereby completing the fine adjustment of the curvature of the LED display screen.

[0082] Compared to traditional arc locks, this type of lock uses a rotation-movement transmission pair (such as a threaded transmission pair or a ball screw pair) between the rotating adjustment component 40 and the moving positioning component 30. This rotation-movement transmission pair can generally convert large-angle handwheel movements into micro-axial displacements. Therefore, by setting the appropriate lead, faster arc adjustment of the LED display screen can be achieved with higher precision. Furthermore, the entire arc adjustment process is simple, convenient, and highly efficient.

[0083] In some embodiments, the rotation adjustment member 40 and the movable positioning member 30 are connected by a thread. The following example illustrates this specifically: the angle (or radian) resolution jumps from "1 degree level" to "0.1 degree level".

[0084] The rotating adjustment component 40 and the moving positioning component 30 are driven by a precision threaded pair. One rotation of the rotating adjustment component 40 moves the moving positioning component 30 by one thread pitch, which is the hole spacing of the positioning holes 321 on the moving positioning component 30. A rotation of only 36 degrees produces an axial feed of 1 / 10 of the thread pitch. The thread pitch is typically 0.5mm to 1mm. Taking a 0.5mm thread pitch as an example, one rotation of the rotating adjustment component 40 corresponds to an axial displacement of 0.5mm, and a rotation of only 36 degrees produces an axial feed of 0.05mm. After being amplified by the 500mm arm length of the housing, the resulting angular resolution is θ≈arctan(0.05 / 500)≈0.006 degrees≈0.36′, far smaller than the traditional 1-degree step, achieving a "ten-fold" improvement in accuracy. It can easily achieve micro-arc settings of 0.15 degrees, 0.1 degrees, or even 0.05 degrees, meeting the stringent requirement of a 20m span screen with an arc height of less than 300mm.

[0085] The threaded joint provides continuous linear displacement, no longer limited by 5-degree, 2.5-degree, and 1-degree mechanical settings, allowing for precise tightening. During on-site assembly, workers observe, measure, and rotate the adjusting component 40 degrees simultaneously, forming the arc surface in one step. This eliminates the trial-and-error time required for multiple shim removals or hammering for positioning, significantly shortening the arc adjustment cycle per unit.

[0086] Furthermore, the threaded pair serves as both an adjustment mechanism and a rigid locking function, eliminating the need for secondary locking. When adjustment stops, the self-locking friction of the threaded pair immediately transforms into an anti-loosening force, capable of withstanding the weight of the screen, wind load, and alternating shear forces caused by thermal expansion and contraction.

[0087] In summary, the threaded engagement between the rotating adjustment component 40 and the moving positioning component 30 combines the three functions of precision micro-feeding, self-locking bearing, and one-handed / automatic operation into one, enabling LED displays to achieve a comprehensive performance leap with higher precision, faster arc adjustment, more stable locking, and smaller space occupation in ultra-large area scenarios, which is significantly better than traditional gear-type adjustment mechanisms.

[0088] In addition, the rotating adjustment component 40 has scale markings, with two adjacent numbers representing 1 / 10 of the adjustment angle or pitch. For example, the large scale on the locking lever 20 has an angle of 1.5 degrees per division, while one division of the rotating adjustment component 40 is 0.15 degrees. This method can achieve a 10-fold high-resolution arc adjustment.

[0089] Please refer to the following: Figure 9 , Figure 10 , Figure 13 and Figure 16 The LED display arc lock 1 also includes an adjustment seat 50, which is fixed to the lock rod 20. The rotating adjustment component 40 is rotatably connected to the adjustment seat 50. The moving positioning component 30 includes a connecting shaft 31, which is connected to the adjustment seat 50 and the rotating adjustment component 40. The connecting shaft 31 is provided with a threaded section 311 that is threadedly connected to the rotating adjustment component 40.

[0090] The rotating adjusting component 40 is fixedly connected to the locking rod 20 via the adjusting seat 50. The connecting shaft 31 passes through the adjusting seat 50 and the rotating adjusting component 40, and its two ends are coaxially guided. The threaded pair is always under central tension throughout its entire length, suppressing the lateral sway common in traditional cantilever structures. At the same time, the threaded section 311 of the connecting shaft 31 is completely hidden inside the cavity of the adjusting seat 50, isolating it from external sand and rainwater.

[0091] In some embodiments, the movable positioning member 30 further includes a positioning plate 32 connected to the connecting shaft 31. The positioning plate 32 and the connecting shaft 31 may be an integral structure. The locking rod 20 is provided with an adjustment hole 21. The LED display arc lock 1 also includes a detachable connector 60, which passes through and engages with the adjustment hole 21 and connects to the positioning plate 32, so that the positioning plate 32 can move within the limitation range of the adjustment hole 21. Of course, the detachable connector 60 may be a bolted connector.

[0092] Of course, depending on actual needs, the adjusting hole 21 is an oblong hole with semicircular ends and a straight middle, and its length direction is the stroke of the threaded pair. After the bolt connector passes through the oblong hole, it is threadedly connected to the positioning plate 32. The movable positioning part 30 can be translated under the cooperation of the bolt connector and the oblong hole, ensuring the stability and range of movement of the movable positioning part 30.

[0093] In some embodiments, please refer to the following: Figure 12 The LED display arc lock 1 also includes a limiting shaft 70, and the rotating adjustment member 40 is provided with a limiting groove 41. The limiting shaft 70 passes through the adjustment seat 50 and is embedded in the limiting groove 41 to limit the rotation of the rotating adjustment member 40 within a preset angle range.

[0094] As can be seen, the limiting shaft 70 (also called the pin) passes through the adjusting seat 50 and sinks into the limiting groove 41 of the rotating adjusting component 40, and the groove length corresponds to the designed stroke (e.g., 330 degrees). When the worker rotates continuously to the limit position, the limiting shaft 70 makes rigid contact with the groove wall, and the torque increases sharply, which fundamentally eliminates failures such as plastic deformation of the threaded pair and local overload warping of the box frame caused by over-stroke rotation, and reduces the on-site failure rate.

[0095] Meanwhile, the two ends of the limiting groove 41 naturally form two mechanical zero points: the minimum arc and the maximum arc. After the screen is disassembled and reassembled, the worker only needs to turn the knob to either limit and then count in reverse to reproduce the previous arc surface.

[0096] Please refer to the following: Figure 9 and Figure 10 The LED display arc lock 1 also includes an abutting positioning member 80 and an abutting elastic member 90. The abutting elastic member 90 abuts between the locking rod 20 and the abutting positioning member 80. The abutting elastic member 90 is used to provide elastic force so that the abutting positioning member 80 has a tendency to move closer to the rotating adjustment member 40. Correspondingly, the rotating adjustment member 40 is provided with an abutting positioning groove 421 distributed in the circumferential direction. The abutting positioning member 80 is positioned and engaged with the abutting positioning groove 421.

[0097] Specifically, multiple abutment positioning grooves 421 are evenly distributed along the circumference. When the worker rotates the adjusting component 40, the abutment positioning component 80 (steel ball) jumps into the next groove in sequence under the action of elastic force, making a crisp "click" sound. This allows the operator to confirm that the adjustment has been made, for example, by 0.1 degrees, without having to look at the scale. Among them, the abutment elastic component 90 provides a certain preload force, so that a certain holding torque is generated between the abutment positioning component 80 and the abutment positioning groove 421, which is much higher than the loosening torque of the threaded pair itself.

[0098] Please refer to the following: Figure 14 and Figure 15 The rotating adjustment component 40 is also provided with a circumferential positioning surface 42 and a circumferential tooth surface 43. The abutment positioning groove 421 is located on the circumferential positioning surface 42, and the circumferential tooth surface 43 is located on both sides of the circumferential positioning surface 42 along the axial direction.

[0099] The circumferential positioning surface 42 and the double-sided circumferential toothed surfaces 43 are formed in one step on a CNC lathe using the same forming milling cutter. The abutment positioning grooves 421 are evenly distributed on the circumferential positioning surface 42, and the double-sided circumferential toothed surfaces 43 naturally form annular anti-slip textures around the knob, creating a high-friction, oil-resistant, and thin hand contact area.

[0100] Please refer to the following: Figure 12 , Figure 17 , Figure 18 , Figure 19 and Figure 20 The LED display arc lock 1 also includes a handle 100, a rotating component 110, a positioning component 120, a limiting component 130, and a reset elastic component 140.

[0101] The handle 100 is rotatably connected to the lock sleeve 10. The handle 100 can rotate about its own axis, which is parallel to a second direction and perpendicular to the first direction. The second direction can be as follows: Figure 4 The Y-axis direction is shown.

[0102] The rotating part 110 engages with the locking rod 20. The rotating part 110 can rotate around its own axis to drive the locking rod 20 to move. The axis is parallel to the second direction. The rotating part 110 is provided with a limiting groove 111.

[0103] The positioning component 120 engages with the handle 100 and is fitted with the rotating component 110. The positioning component 120 is used to embed the movable positioning component 30 to achieve positioning of the movable positioning component 30. Furthermore, the positioning component 120 is also used to move relative to the handle 100 along the axis of the second direction while rotating with the handle 100 to release the positioning of the movable positioning component 30.

[0104] The limiting member 130 is provided on the positioning component 120. The limiting member 130 is used to move along the limiting groove 111 during the first rotation stage of the positioning component 120 to push the positioning component 120 to disengage from the moving positioning member 30. The limiting member 130 is also used to push the rotating member 110 to rotate during the second rotation stage of the positioning component 120, thereby driving the locking rod 20 to move.

[0105] The reset elastic element 140 can be a reset spring. Both ends of the reset elastic element 140 abut against the positioning component 120 and the locking sleeve 10, respectively. The reset elastic element 140 provides elastic force to make the positioning component 120 tend to engage with the movable positioning element 30. This facilitates the automatic reset of the positioning component 120 after the handle 100 is released after arc adjustment, thus achieving repositioning of the movable positioning element 30.

[0106] During the arc adjustment operation, the handle 100 drives the positioning component 120 to rotate. In the first rotation stage of the positioning component 120, the limiting member 130 moves in the limiting groove 111. The limiting member 130 pushes the positioning component 120 to disengage from the moving positioning member 30, thereby releasing the positioning of the moving positioning member 30. When the limiting member 130 is blocked in the limiting groove 111 and cannot move relative to the rotating member 110, the positioning component 120 enters the second rotation stage. The limiting member 130 pushes the rotating member 110 to rotate. The rotating member 110 drives the locking rod 20 to move relative to the locking sleeve 10 assembly, thereby completing the large-size arc adjustment of the LED display screen. When the target arc is reached, the handle 100 is released. Under the elastic force of the reset elastic member 140, the positioning component 120 is embedded in the moving positioning member 30 to achieve the positioning of the moving positioning member 30, thereby completing the arc adjustment operation of the LED display screen.

[0107] This design allows for a complete "unlock → adjust → lock" process for large-area arcs by simply rotating the handle 100 with one hand. It is simple to operate, convenient to adjust, and highly efficient. Specifically, in the first rotation phase of the positioning component 120, the limiting member 130 moves along the limiting groove 111, pushing the positioning component 120 away from the moving positioning member 30, thus unlocking. In the second rotation phase of the positioning component 120, the limiting member 130, after being obstructed, pushes the rotating member 110 to rotate, causing the locking rod 20 to move, thus adjusting the arc. After releasing the handle 100, the reset elastic member 140 automatically pushes the positioning component 120 back into the moving positioning member 30 to complete the locking. Simultaneously, the cooperation between the limiting groove 111 and the limiting member 130 forms a physical hard limit, ensuring that the handle 100 can only move the locking rod 20 within the preset angle range defined by the limiting groove 111, solving the problem of excessive adjustment error in traditional technologies. Furthermore, the positioning component 120 can only disengage from the moving positioning member 30 under the push of the limiting member 130, preventing accidental unlocking due to misoperation. In addition, the reset elastic element 140 provides flexible pressure (elastic force) to the positioning component 120 when locking, realizing automatic locking operation by releasing the handle 100 after adjusting to the target curvature, and also avoiding deformation of the LED display cabinet or damage to the LED display due to traditional hard locking.

[0108] After large-size curvature adjustment is achieved by rotating the operating handle 100, further fine-tuning of the curvature can be achieved by operating the rotating adjustment component 40, thereby meeting the curvature adjustment requirements for ultra-large screens.

[0109] To facilitate the engagement of the locking rod 20 and the rotating member 110, the locking rod 20 is provided with a rack 22 that engages with the rotating member 110, and the rotating member 110 is provided with a toothed portion 113 that engages with the rack 22. The toothed portion 113 is housed in the locking rod 20.

[0110] In some embodiments, the positioning plate 32 of the movable positioning member 30 is provided with positioning holes 321. The positioning plate 32 is provided with positioning holes 321 spaced apart along the first direction. The spacing between two adjacent positioning holes 321 can be set to be the same. After the arc adjustment is completed, the positioning component 120 is inserted into the positioning holes 321 to restrict the movement of the movable positioning member 30, thereby achieving the purpose of positioning the movable positioning member 30.

[0111] Please refer to the following: Figure 11The positioning component 120 includes a positioning pin 121 and a toggle member 122. The positioning pin 121 passes through the rotating member 110 and has an insert end 1211 that mates with the positioning hole 321. The insert end 1211 has a certain taper so that the tip of the insert end 1211 can be smoothly inserted into the positioning hole 321. The toggle member 122 is connected to the positioning pin 121 and is used to drive the positioning pin 121 away from the positioning hole 321 to release the corresponding positioning.

[0112] To facilitate the connection between the actuating element 122 and the positioning pin 121, the actuating element 122 is provided with an axial connecting hole, and the positioning pin 121 is interference-fitted into the connecting hole to achieve synchronous movement of the actuating element 122 and the positioning pin 121 during the arc adjustment process.

[0113] To facilitate the installation of the reset elastic element 140, the actuating element 122 has an annular protrusion at one end near the moving positioning element 30. One end of the reset elastic element 140 abuts against the inner side of the annular protrusion, and the other end abuts against the inner wall of the locking sleeve 10.

[0114] In this way, when the handle 100 drives the actuating member 122 to rotate, under the cooperation of the limiting member 130 and the limiting groove 111, the limiting member 130 pushes the positioning pin 121 to disengage from the positioning hole 321, thereby releasing the positioning of the moving positioning member 30. During the process of releasing the positioning, the reset elastic member 140 accumulates elastic potential energy. If the handle 100 is rotated further, the limiting member 130 pushes the rotating member 110 to rotate. The rotating member 110 drives the locking rod 20 to move relative to the locking sleeve 10, thereby achieving the purpose of arc adjustment. After the arc adjustment is completed, the actuating member 122 is released, and the elastic potential energy accumulated by the reset elastic member 140 is released, so that the positioning pin 121 automatically resets and is embedded in the positioning hole 321, thereby realizing the repositioning of the moving positioning member 30.

[0115] In some embodiments, the toggle member 122 is provided with a snap-fit ​​protrusion 1221, and the handle 100 is provided with a snap-fit ​​groove 101. The snap-fit ​​protrusion 1221 is movably embedded in the snap-fit ​​groove 101 so that the handle 100 drives the toggle member 122 to rotate and the toggle member 122 moves relative to the handle 100.

[0116] In other words, by engaging the locking protrusion 1221 and the locking groove 101, the torque of the handle 100 is transmitted to the actuating member 122, while the actuating member 122 moves axially relative to the handle 100, thereby achieving the purpose of unlocking.

[0117] To facilitate precise control of the length of the locking rod 20 extending relative to the locking sleeve 10, the locking rod 20 is provided with a displacement scale mark. The displacement scale mark is used to indicate the current length of the locking rod 20 extending relative to the locking sleeve 10. The difference between two adjacent scale marks in the displacement scale mark is equal to the distance between two adjacent positioning holes 321.

[0118] In some embodiments, the LED display arc lock 1 further includes an abutting member 150 and an abutting elastic member 160. The abutting elastic member 160 abuts between the lock sleeve 10 and the abutting member 150 to provide an elastic force to the abutting member 150, so that the abutting member 150 tends to move closer to the rotating member 110.

[0119] Therefore, the rotating member 110 is provided with abutting holes 112 evenly distributed along the circumferential direction, and the abutting member 150 is positioned and engaged with the abutting holes 112. The abutting member 150 is bead-shaped, the abutting hole 112 is a round hole, and the abutting elastic member 160 is an abutting spring.

[0120] In this way, when the required curvature is adjusted, the abutment 150 moves from the previous abutment hole 112 to the next abutment hole 112, and emits a predetermined sound and generates a predetermined force, thereby providing the operator with sound and force feedback.

[0121] At the same time, the locking lever 20 is configured to extend one unit of the displacement scale relative to the locking sleeve 10 when the abutment 150 passes through two adjacent abutment holes 112. This facilitates further precise control of the length of the locking lever 20 extending relative to the locking sleeve 10.

[0122] In some embodiments, the limiting groove 111 may be a combined spiral groove. Specifically, the limiting groove 111 includes a first spiral groove 1111 and a second spiral groove 1112. Both the first spiral groove 1111 and the second spiral groove 1112 have a first position and a second position. The first spiral groove 1111 and the second spiral groove 1112 are connected at the first position. When the limiting member 130 is in the first position, the positioning component 120 is embedded in the movable positioning member 30. When the limiting member 130 is in the second position, the positioning component 120 is disengaged from the movable positioning member 30. Of course, the limiting member 130 is specifically a limiting bead.

[0123] It should be noted that the first position mentioned above is the highest point of the first spiral groove 1111 or the second spiral groove 1112, and correspondingly, the second position is the lowest point of the first spiral groove 1111 or the second spiral groove 1112.

[0124] In this way, when the positioning pin 121 is inserted into the positioning hole 321, the limiting member 130 is located at the highest point of the first spiral groove 1111 or the second spiral groove 1112. As the actuating member 122 enters the first rotation stage, the limiting member 130 moves along the spiral groove from the highest point to the lowest point. When the limiting member 130 reaches the lowest point, the positioning pin 121 disengages from the positioning hole 321, thus unlocking. Then, the actuating member 122 enters the second rotation stage. Since the limiting member 130 is blocked at the lowest point of the spiral groove and cannot continue to rotate relative to the rotating member 110, it can only push the rotating member 110 to rotate together to realize the movement of the locking rod 20. After the arc adjustment is completed, the actuating member 122 is released, and the positioning pin 121 is reset under the elastic force of the reset elastic member 140 and re-inserted into other positioning holes 321. At this time, the limiting member 130 returns to the highest point along the spiral groove from the lowest point.

[0125] It should be noted that during the process of unlocking and relocking the locating pin 121, the limiting member 130 only moves in both the forward and reverse directions within one spiral groove. The purpose of setting the other spiral groove is that when the limiting member 130 is at the highest point of the first spiral groove 1111 or the second spiral groove 1112, the operator can rotate the actuating member 122 in either the clockwise or counterclockwise direction. For example, when rotating clockwise, the limiting member 130 moves from the highest point to the lowest point along the first spiral groove 1111; when rotating counterclockwise, the limiting member 130 moves from the highest point to the lowest point along the second spiral groove 1112.

[0126] In some embodiments, the locking sleeve 10 includes a first sliding cover 11 and a second sliding cover 12, which together form a sliding track. The locking rod 20 slides under the guidance and limiting action of the sliding track. This allows for guidance and limiting of the movement of the locking rod 20 relative to the locking sleeve 10 during the arc adjustment process, ensuring the stability of the movement of the locking rod 20.

[0127] In addition, the second sliding cover 12 is provided with a mounting groove 1201 and a through hole 1202. The mounting groove 1201 is located inside the through hole 1202. The rotating member 110 is installed in the mounting groove 1201. The through hole 1202 and the mounting groove 1201 are connected in the second direction. The positioning component 120 passes through the through hole 1202.

[0128] In this way, the rotating part 110 can rotate within the mounting groove 1201, which helps to protect the rotating part 110 and ensure the adjustment accuracy and service life of the adjustment mechanism.

[0129] In some embodiments, the handle 100 is connected to a locking sleeve 10 at both ends, the second sliding cover 12 is provided with a rotating connection protrusion 1203, the handle 100 is provided with a rotating connection groove 102, and the rotating connection protrusion 1203 is embedded in the rotating connection groove 102 so that the handle 100 rotates relative to the second sliding cover 12.

[0130] In this way, the entire LED display curvature lock 1 has an I-shaped structure. During the curvature adjustment operation, the handle 100 drives the positioning components 120 at both ends to rotate. In the first rotation stage, the limiting member 130 pushes the positioning component 120 to disengage from the corresponding movable positioning member 30, thereby unlocking the display. In the second rotation stage, the limiting member 130 pushes the rotating member 110 to rotate, and the rotating member 110 drives the locking rod 20 to move relative to the corresponding locking sleeve 10, thus adjusting the curvature of the LED display to the required curvature. When the target curvature is reached, the handle 100 is released. Under the elastic force of the reset elastic member 140, the positioning component 120 is inserted into the corresponding movable positioning member 30 to reposition the movable positioning member 30, thereby completing the curvature adjustment operation of the LED display.

[0131] In addition, both the lock sleeve 10 and the lock rod 20 are hinged to a connecting seat 170, which can rotate about an axis parallel to the second direction.

[0132] Please refer to the following: Figure 21 The present application provides a display device 1000, which includes an LED display unit 2 and an LED display cabinet 3. The LED display cabinet 3 is used to install the LED display unit 2, and also includes an LED display curvature lock 1 for adjusting and fixing the curvature of the LED display unit 2, as described in the above specific embodiments.

[0133] Specifically, the LED display unit 2 consists of multiple interconnected LED display modules. The hinged connection allows for changes in the angle between adjacent LED display modules, enabling the LED display modules to change their curvature and achieve flexibility. The LED display cabinet 3 includes a left side frame assembly and a right side frame assembly. There are also two LED display curvature locks 1: one for the left side and one for the right side. The left and right ends of the LED display unit 2 are connected to the left and right side frame assemblies, respectively. One end of the left LED display curvature lock 1 is connected to the left side frame assembly via a connector 170, and the other end is connected to the central control box assembly via the connector 170. Similarly, one end of the right LED display curvature lock 1 is connected to the right side frame assembly via a connector 170, and the other end is connected to the central control box assembly via the connector 170.

[0134] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0135] The LED display screen curvature lock and display device provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the solution and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. An LED display screen arc lock, characterized in that, include: Lock; A locking rod is movably fitted into the locking sleeve; A movable positioning element is movably connected to the locking rod and connected to the locking sleeve; The rotating adjustment component, in rotational cooperation with the movable positioning component, is used to drive the movable positioning component and the locking sleeve to move relative to the locking rod.

2. The LED display screen curvature lock as described in claim 1, characterized in that, The rotating adjustment component is threadedly connected to the movable positioning component. The LED display arc lock also includes an adjustment seat, which is fixed to the locking rod. The rotating adjustment component is rotatably connected to the adjustment seat. The movable positioning component includes a connecting shaft, which is through-fitted with the adjustment seat and the rotating adjustment component. The connecting shaft is provided with a threaded section that is threadedly connected to the rotating adjustment component.

3. The LED display screen curvature lock as described in claim 2, characterized in that, The movable positioning component also includes a positioning plate connected to the connecting shaft. The locking rod is provided with an adjustment hole. The LED display arc lock also includes a detachable connector. The detachable connector passes through and cooperates with the adjustment hole and connects to the positioning plate, so that the positioning plate can move within the limitation range of the adjustment hole.

4. The LED display screen curvature lock as described in claim 2, characterized in that, The LED display arc lock also includes a limiting shaft, and the rotation adjustment component is provided with a limiting groove. The limiting shaft passes through the adjustment seat and is embedded in the limiting groove to limit the rotation of the rotation adjustment component within a preset angle range.

5. The LED display screen curvature lock as described in claim 1, characterized in that, The LED display arc lock also includes a stop positioning component and a stop elastic component. The stop elastic component abuts against the locking rod and the stop positioning component. The stop elastic component is used to provide elastic force so that the stop positioning component tends to move closer to the rotation adjustment component. The rotating adjustment component is provided with abutting positioning grooves distributed along the circumferential direction, and the abutting positioning component is positioned and engaged with the abutting positioning grooves.

6. The LED display screen curvature lock as described in claim 5, characterized in that, The rotating adjustment component is further provided with a circumferential positioning surface and a circumferential toothed surface. The abutment positioning groove is located on the circumferential positioning surface, and the circumferential toothed surface is located on both sides of the circumferential positioning surface along the axial direction.

7. The LED display screen curvature lock as described in any one of claims 1-6, characterized in that, The LED display screen arc lock also includes: A handle is rotatably connected to the locking sleeve; A rotating component engages with the locking rod to drive the locking rod to move; the rotating component is provided with a limiting groove. A positioning component is snapped onto the handle and passes through and cooperates with the rotating component. It is used to embed the movable positioning component to position the movable positioning component, and also to move relative to the handle while following the rotation of the handle to release the positioning of the movable positioning component. A limiting member is provided on the positioning assembly and is used to move along the limiting groove during the first rotation phase of the positioning assembly to push the positioning assembly away from the moving positioning member, and is also used to push the rotating member to rotate during the second rotation phase of the positioning assembly. A reset elastic element, with its two ends abutting against the positioning component and the locking sleeve respectively, is used to provide elastic force so that the positioning component tends to embed into the moving positioning element.

8. The LED display screen curvature lock as described in claim 7, characterized in that, The movable positioning element is provided with a positioning hole, and the positioning assembly includes: A positioning pin passes through the rotating component and has an insert end that mates with the positioning hole; A toggle element, connected to the positioning pin, is used to drive the positioning pin away from the positioning hole; The actuating element is provided with a locking protrusion, and the handle is provided with a locking groove. The locking groove engages with the locking protrusion so that the handle drives the actuating element to rotate and the actuating element moves relative to the handle.

9. The LED display screen curvature lock as described in claim 7, characterized in that, The limiting groove includes a first spiral groove and a second spiral groove. Both the first spiral groove and the second spiral groove have a first position and a second position. The first spiral groove and the second spiral groove are connected at the first position. When the limiting member is in the first position, the positioning component is embedded in the movable positioning member. When the limiting member is in the second position, the positioning component is disengaged from the movable positioning member.

10. A display device, comprising an LED display unit and an LED display cabinet, wherein the LED display cabinet is used to mount the LED display unit, characterized in that, It also includes an LED display screen curvature lock as described in any one of claims 1-9 for adjusting and fixing the curvature of the LED display unit.

Images