Radian lock device and display screen

Abstract

The utility model relates to the technical field of outdoor display screens, and discloses a radian lock device and a display screen, the radian lock device comprises a radian lock mechanism and a lock rod assembly, the radian lock mechanism comprises a radian lock seat and a bolt lock assembly, and the lock rod assembly is matched and locked with the bolt lock assembly on one side of the radian lock seat; the radian lock mechanism further comprises a radian lock sliding block, a fixing pressing block and an angle adjusting assembly, a first sliding groove extending in the circumferential direction is formed in the radian lock seat, and the radian lock sliding block is arranged in the first sliding groove formed in the two side walls of the radian lock seat in a sliding mode, and the fixed pressing block is telescopically arranged in a mounting hole which extends along the radial direction on the radian lock sliding block. The angle adjusting assembly comprises an angle adjusting knob and a connecting rod, the connecting rod is arranged at one end of the angle adjusting knob, the connecting rod penetrates through the fixed pressing block to be rotationally connected with the radian lock sliding block, the angle adjusting knob can be selectively matched with the angle locking position or the angle unlocking position, and the fixed pressing block can be fixed to or unfixed to the radian lock seat.

Description

Technical Field

[0001] The utility model relates to the technical field of outdoor display screens, in particular to a radian locking device and a display screen. Background Art

[0002] LED displays are used in a variety of situations as a primary medium for media communication. Most outdoor LED displays are typically assembled from multiple panels. When assembling curved screens, curved locks are typically used to minimize the gaps and enhance the display quality.

[0003] A curved lock consists of a curved lock base and a locking rod. The curved lock base has a locking hole for the locking rod to insert. When the housing frames of two adjacent display screens are spliced ​​together, the locking rod on the housing frame of one display screen is inserted into the locking hole of the curved lock base on the housing frame of the other display screen, thereby completing the splicing of the two housing frames. Sometimes, the display screens need to be spliced ​​into a specific curvature. To improve the versatility of the curved lock, the curved lock is usually equipped with an angle adjustment mechanism. This mechanism adjusts the angle of the locking hole to meet the required splicing curvature. Existing adjustable angle locks have complicated and time-consuming steps to adjust the angle. Utility Model Content

[0004] The purpose of the utility model is to provide an arc locking device and a display screen, which can not only adjust the arc of two adjacent display screens, but also facilitate operation and improve the efficiency of angle adjustment.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] The arc lock device includes an arc lock mechanism and a locking rod assembly. The arc lock mechanism includes an arc lock seat and a latch lock assembly. The latch lock assembly is arranged on one side of the arc lock seat. The locking rod assembly cooperates with the latch lock assembly to lock tightly. The arc lock mechanism also includes:

[0007] An arc lock slider, wherein a first sliding groove extending in a circumferential direction is provided in the arc lock seat, the arc lock slider is slidably arranged in the first sliding groove, and both ends of the first sliding groove pass through the two side walls of the arc lock seat, and the latch lock assembly is provided on one side of the arc lock slider;

[0008] A fixed pressure block, wherein the arc lock slider is provided with a mounting hole whose center line extends radially, and the fixed pressure block is telescopically arranged in the mounting hole;

[0009] The angle adjustment assembly includes an angle adjustment knob and a connecting rod. The connecting rod is arranged at one end of the angle adjustment knob. The connecting rod passes through the fixed pressure block and is rotatably connected to the arc lock slider. The mating end surfaces of the fixed pressure block and the angle adjustment knob are provided with an angle locking position and an angle unlocking position. Rotating the angle adjustment knob can make the angle adjustment knob selectively cooperate with the angle locking position or the angle unlocking position, and the fixed pressure block can be fixed or released from the arc lock seat.

[0010] As an optional solution of the arc locking device, the angle locking position includes a locking plane, and the angle unlocking position includes an unlocking plane. The height of the unlocking plane is lower than the locking plane, and there are two locking planes, and the unlocking plane is located between the two locking planes.

[0011] As an optional solution of the arc locking device, a limiting block is provided at one end of the locking plane, and the limiting blocks of the two locking planes are diagonally arranged.

[0012] As an optional solution of the arc locking device, a transition slope is provided between the locking plane and the unlocking plane, and the two transition slopes are arranged diagonally on the unlocking plane.

[0013] As an optional solution for the arc locking device, the mating surface between the angle adjustment knob and the fixed pressure block is provided with a first positioning bead, the locking plane is also provided with a locking positioning hole, and the unlocking plane is also provided with an unlocking positioning hole, and the first positioning bead can cooperate with the locking positioning hole or the unlocking positioning hole.

[0014] As an optional scheme of the arc lock device, the fixed pressure block includes a pressure head and a sleeve, the sleeve is arranged at one end of the pressure head, and the outer diameter of the sleeve is smaller than the outer diameter of the pressure head, the sleeve is provided with a through hole passing through the pressure head, and the top of the arc lock seat is provided with an avoidance groove extending along the extension direction of the first slide groove, the pressure head is arranged between the angle adjustment knob and the arc lock seat, the sleeve enters the mounting hole through the avoidance groove, and the connecting rod passes through the through hole into the mounting hole and is rotatably connected to the arc lock slider.

[0015] As an optional solution of the arc locking device, the sleeve is telescopically arranged in the mounting hole through a first spring; the mounting hole is set as a stepped hole, the first spring is sleeved on the outer periphery of the connecting rod, and one end of the first spring abuts against the end of the sleeve away from the pressure head, and the other end abuts against the stepped surface of the stepped hole.

[0016] As an optional solution for the arc locking device, the stepped hole passes through the arc locking slider, and a threaded hole is provided at the end of the connecting rod away from the angle adjustment knob. The limit screw extends from the small hole of the stepped hole and is screwed to the threaded hole.

[0017] As an optional solution for the arc lock device, along the extension direction of the avoidance groove, first pressing teeth are provided on both sides of the outside of the avoidance groove, and second pressing teeth are provided on one end of the pressure head close to the sleeve. The first pressing teeth and the second pressing teeth cooperate to fix the fixed pressure block to the arc lock seat.

[0018] As an optional solution of the arc lock device, a second positioning bead is also provided on the arc lock slider. The second positioning bead is arranged on both sides of the mounting hole. Along the extension direction of the avoidance groove, multiple slider positioning holes are arranged on both sides of the inside of the avoidance groove at intervals. The second positioning bead can selectively cooperate with one of the slider positioning holes.

[0019] As an optional solution of the arc lock device, the latch lock assembly includes a latch lock plate, a second slide groove extending radially is provided on one side of the arc lock slider, the latch lock plate can be telescopically arranged in the second slide groove, a lock hole is provided on the latch lock plate, and the locking rod assembly includes a locking rod, which can cooperate with the lock hole to lock.

[0020] A display screen, the display screen includes a box frame, the box frame is provided with an arc locking device as described in any of the above schemes, one side of the box frame is provided with the arc locking mechanism, and the other side is provided with the locking rod assembly, and in two adjacent box frames, the arc locking mechanism of one is connected to the locking rod assembly of the other.

[0021] Beneficial effects of the utility model:

[0022] The present invention provides an arc lock device for locking two adjacent display screens. A locking rod assembly on one display screen engages and locks a latch lock assembly on one side of an arc lock base on the other display screen. A arc lock slider is disposed within a first circumferentially extending slot within the arc lock base, and the latch lock assembly is positioned on one side of the arc lock slider. An angle adjustment knob of the angle adjustment assembly is rotatably connected to the arc lock slider via a connecting rod. A fixed pressure block is disposed between the angle adjustment knob and the arc lock slider. The fixed pressure block is retractably disposed within a mounting hole of the arc lock slider. When the angle adjustment knob engages the angle locking position on the fixed pressure block, the fixed pressure block moves toward the arc lock slider and retracts into the mounting hole. The fixed pressure block can be fixed to the arc lock base, thereby fixing the angle of the arc lock slider. To adjust the angle, the angle adjustment knob is rotated, engaging the angle unlocking position on the fixed pressure block, causing the fixed pressure block to move away from the arc lock slider, thereby releasing the fixed pressure block from the arc lock base. At this time, the angle of the arc lock slider can be adjusted by rotating the angle adjustment knob to move it along the first slot, thereby adjusting the angle of the arc lock slider, and then adjusting the angle of the latch lock assembly, thereby adjusting the splicing angle of two adjacent display screens. This arc lock device, when adjusting the angle of the arc lock slider, only needs to turn the angle adjustment knob to unlock the arc lock slider; then, the angle adjustment knob is used to drive the arc lock slider along the first slot to adjust the angle; after the angle is adjusted, the angle adjustment knob is rotated in the opposite direction, and the fixed pressure block is fixed to the arc lock seat, thereby fixing the angle of the arc lock slider. This simple operation improves the efficiency of angle adjustment.

[0023] The display screen provided by the present invention includes a box frame and the aforementioned arc locking device. The box frame is provided with an arc locking mechanism and a locking rod assembly at each end. When two adjacent box frames are connected, the locking rod assembly on one box frame connects with the arc locking mechanism on the other box frame to achieve locking of the two box frames. The arc locking device also allows for adjustment of the splicing angle of the two box frames, facilitates operation, and improves angle adjustment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the arc locking device provided by an embodiment of the utility model;

[0025] Figure 2 This is a cross-sectional view of the arc lock device provided by an embodiment of the present invention when the locking angle is 0°;

[0026] Figure 3 This is a cross-sectional view of the arc lock device provided by an embodiment of the present invention when the angle is unlocked;

[0027] Figure 4This is an exploded view of the arc lock device provided by an embodiment of the present utility model;

[0028] Figure 5 This is a structural diagram of a fixed pressing block provided by an embodiment of the present utility model;

[0029] Figure 6 This is a structural diagram of the seat body of the arc lock seat provided by an embodiment of the utility model;

[0030] Figure 7 This is a structural diagram of the upper cover of the arc lock base provided by an embodiment of the utility model;

[0031] Figure 8 This is a schematic structural diagram of the angle adjustment knob and the connecting rod provided in an embodiment of the present utility model;

[0032] Figure 9 This is a schematic structural diagram of a latch lock piece provided by an embodiment of the present utility model;

[0033] Figure 10 This is a top view of the arc lock device provided by an embodiment of the present utility model;

[0034] Figure 11 This is a cross-sectional view of the arc lock device provided by an embodiment of the present invention when the locking angle is -10°;

[0035] Figure 12 This is a cross-sectional view of the arc lock device provided by an embodiment of the present invention when the locking angle is 15°;

[0036] Figure 13 It is a structural diagram of the box frame provided by an embodiment of the present utility model.

[0037] In the picture:

[0038] 100. Box frame; 101. Mounting frame;

[0039] 1. Arc lock seat; 11. Seat body; 111. First slide slot; 12. Upper cover; 121. Avoidance slot; 122. First pressing tooth; 123. Slider positioning hole; 124. Angle scale line;

[0040] 2. Latch lock assembly; 21. Latch lock plate; 211. Lock hole; 2111. Through hole; 2112. Clamp hole; 212. Handle; 22. Lock plate side plate; 23. Lock plate cover plate; 24. Second spring;

[0041] 3. Arc lock slider; 31. Mounting hole; 32. Second positioning bead; 33. Second slide groove; 34. Extension; 341. Avoidance hole;

[0042] 4. Angle adjustment knob; 41. First positioning bead;

[0043] 5. Connecting rod; 51. Threaded hole;

[0044] 6. Fixed pressing block; 61. Press head; 611. Second pressing tooth; 612. Locking plane; 6121. Locking positioning hole; 613. Unlocking plane; 6131. ​​Unlocking positioning hole; 614. Limit block; 615. Transition slope; 616. Alignment block; 62. Sleeve; 621. Through hole;

[0045] 7. First spring;

[0046] 8. Limit screw;

[0047] 9. Locking rod assembly; 91. Locking rod; 92. Locking rod mounting plate; 93. Locking handle. DETAILED DESCRIPTION

[0048] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0049] In the description of this utility model, 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 the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0050] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or removable connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0051] Unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0052] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0053] like Figures 1-4 、 Figure 13 As shown, this embodiment provides an arc lock device, including an arc lock mechanism and a locking rod assembly 9. The arc lock mechanism includes an arc lock base 1 and a latch lock assembly 2. The latch lock assembly 2 is disposed on one side of the arc lock base 1. The locking rod assembly 9 cooperates with the latch lock assembly 2 for locking. The arc lock device provided in this embodiment is used to lock two display screens when they are spliced ​​together. The arc lock mechanism on one display screen cooperates with the locking rod assembly 9 on the other display screen for locking.

[0054] In order to improve the versatility of the arc lock device, the angle of the latch lock assembly 2 on the arc lock mechanism is set to be adjustable. The operation steps for adjusting the angle of the arc lock mechanism in the prior art are complicated and time-consuming.

[0055] In order to solve the above technical problems, the arc lock mechanism provided in this embodiment also includes an arc lock slider 3, a fixed pressure block 6 and an angle adjustment assembly. A first sliding groove 111 extending in the circumferential direction is provided in the arc lock seat 1, and the arc lock slider 3 is slidably arranged in the first sliding groove 111, and the two ends of the first sliding groove 111 pass through the two side walls of the arc lock seat 1. A latch lock assembly 2 is provided on one side of the arc lock slider 3, so that the arc lock slider 3 slides in the first sliding groove 111, which can drive the latch lock assembly 2 to slide, thereby changing the angle of the latch lock assembly 2 and further changing the splicing angle of the two display screens. A mounting hole 31 with a centerline extending radially is provided on the arc lock slider 3, and the fixed pressure block 6 is telescopically arranged in the mounting hole 31. The angle adjustment assembly includes an angle adjustment knob 4 and a connecting rod 5. The connecting rod 5 is provided at one end of the angle adjustment knob 4 and passes through a fixed pressure block 6 for rotational connection with the arc lock slider 3. The mating end surfaces of the fixed pressure block 6 and the angle adjustment knob 4 are provided with an angle locking position and an angle unlocking position. Rotating the angle adjustment knob 4 can selectively engage the angle adjustment knob 4 with the angle locking position or the angle unlocking position, and the fixed pressure block 6 can be fixed or released from the arc lock base 1. When the angle adjustment knob 4 engages with the angle locking position on the fixed pressure block 6, the fixed pressure block 6 moves toward the arc lock slider 3 and retracts into the mounting hole 31. The fixed pressure block 6 can be fixed to the arc lock base 1, thereby fixing the angle of the arc lock slider 3. When adjusting the angle, rotating the angle adjustment knob 4 engages with the angle unlocking position on the fixed pressure block 6, and the fixed pressure block 6 extends out of the mounting hole 31 and moves away from the arc lock slider 3, thereby releasing the fixed pressure block 6 from the arc lock base 1. At this time, the angle of the arc lock slider 3 can be moved along the first slide groove 111 by the angle adjustment knob 4, so as to adjust the angle of the arc lock slider 3 and then adjust the angle of the latch lock assembly 2 to achieve the adjustment of the splicing angle of two adjacent display screens.

[0056] When adjusting the angle of the arc lock slider 3 of this arc lock device, it is only necessary to rotate the angle adjustment knob 4 to unlock the arc lock slider 3; then the angle can be adjusted by driving the arc lock slider 3 along the first slide groove 111 through the angle adjustment knob 4; after the angle is adjusted, the angle adjustment knob 4 is rotated in the opposite direction, and the fixed pressure block 6 can be fixed to the arc lock seat 1 to achieve the angle fixation of the arc lock slider 3; the operation is simple and the angle adjustment efficiency is improved.

[0057] like Figure 5-Figure 7As shown, the fixed pressure block 6 includes a pressure head 61 and a sleeve 62. The sleeve 62 is provided at one end of the pressure head 61, and the outer diameter of the sleeve 62 is smaller than the outer diameter of the pressure head 61. The sleeve 62 is provided with a through hole 621 that passes through the pressure head 61. The top of the arc lock seat 1 is provided with an avoidance groove 121 extending along the extension direction of the first slide groove 111. The pressure head 61 is provided between the angle adjustment knob 4 and the arc lock seat 1. The sleeve 62 enters the mounting hole 31 through the avoidance groove 121. The connecting rod 5 passes through the through hole 621 and enters the mounting hole 31 to be rotatably connected with the arc lock slider 3. The setting of this structure, by utilizing the rotation of the angle adjustment knob 4, can enable the fixed pressure block 6 to fix the arc lock slider 3 and the arc lock seat 1, and can also enable the fixed pressure block 6 to release the arc lock slider 3 and the arc lock seat 1. There is no need to disassemble and install screws when adjusting the angle, thereby improving the angle adjustment efficiency.

[0058] Specifically, the sleeve 62 is telescopically arranged in the mounting hole 31 through the first spring 7; the mounting hole 31 is set as a stepped hole, and the first spring 7 is sleeved on the outer periphery of the connecting rod 5, and one end of the first spring 7 abuts against the end of the sleeve 62 away from the pressure head 61, and the other end abuts against the stepped surface of the stepped hole. When the fixed pressure block 6 is subjected to the pressure of the angle adjustment knob 4, the first spring 7 is compressed, and the pressure head 61 moves in the direction close to the arc lock seat 1 and is fixed to the top of the arc lock seat 1. When the force of the angle adjustment knob 4 on the fixed pressure block 6 is relaxed, under the action of the elastic force of the first spring 7, the pressure head 61 moves in the direction away from the arc lock seat 1 and is released from the top of the arc lock seat 1.

[0059] A stepped hole extends through the arc lock slider 3. A threaded hole 51 is provided at the end of the connecting rod 5 remote from the angle adjustment knob 4. A limit screw 8 extends through the small hole in the stepped hole and is threadedly engaged with the threaded hole 51. The connecting rod 5 can rotate relative to the small hole in the stepped hole. The limit screw 8 has a limit head located at the outer end of the small hole in the stepped hole, which is used to limit the axial movement of the angle adjustment assembly along the mounting hole 31, thereby achieving a rotational connection between the angle adjustment assembly and the arc lock slider 3.

[0060] Of course, in other embodiments, a bearing may be provided in the small hole of the stepped hole, and the connecting rod 5 is interference fit with the inner hole of the bearing, so that the connecting rod 5 can rotate relative to the mounting hole 31 .

[0061] Along the extension direction of the avoidance groove 121, first pressing teeth 122 are provided on both sides of the outside of the avoidance groove 121. Second pressing teeth 611 are provided on the end of the pressure head 61 near the sleeve 62. The first pressing teeth 122 and the second pressing teeth 611 cooperate to secure the fixed pressure block 6 to the arc lock seat 1. When the fixed pressure block 6 is subjected to the force of the angle adjustment knob 4 and the sleeve 62 is retracted to the mounting hole 31, the second pressing teeth 611 on the pressure head 61 can engage and secure with the corresponding first pressing teeth 122. When the force on the fixed pressure block 6 is relaxed, the elastic force of the first spring 7 causes the pressure head 61 to move away from the arc lock slider 3, thereby disengaging the second pressing teeth 611 from the first pressing teeth 122. It should be noted that the number of first pressing teeth 122 is far greater than the number of second pressing teeth 611. The second pressing teeth 611 cooperate with the corresponding number of first pressing teeth 122 to ensure the stability of the fixation. When the angle adjustment knob 4 drives the arc lock slider 3 to move and adjust the angle, the second pressing teeth 611 cooperate with another part of the first pressing teeth 122 .

[0062] Of course, in other embodiments, the fixed pressing block 6 and the arc lock seat 1 can also be fixed by means of a card slot and a card block.

[0063] Furthermore, the arc lock slider 3 is provided with second positioning beads 32, which are located on either side of the mounting hole 31. Multiple slider positioning holes 123 are spaced apart on both sides of the avoidance groove 121 along its extension direction. The second positioning beads 32 can selectively engage with one of the slider positioning holes 123. After the arc lock slider 3 is moved to a specified angle, the second positioning beads 32 engage with the slider positioning hole 123 at the corresponding angle, achieving precise positioning and ensuring accurate angle adjustment.

[0064] like Figure 6 and Figure 7 As shown, the arc lock base 1 includes a base 11 and an upper cover 12, which are detachably connected by a first screw. A first slide groove 111 is provided in the base 11. After the arc lock slider 3 is set in the first slide groove 111, the upper cover 12 and the base 11 are connected by the first screw to facilitate the installation of the arc lock slider 3. An avoidance groove 121 is provided in the upper cover 12, a first pressing tooth 122 is provided on the outer wall of the upper cover 12, and a slider positioning hole 123 is provided on the inner wall of the upper cover 12.

[0065] like Figure 4 and Figure 5As shown, the angle adjustment assembly provided in this embodiment includes a locking plane 612 in the angle locking position and an unlocking plane 613 in the angle unlocking position. The height of the unlocking plane 613 is lower than the locking plane 612, and two locking planes 612 are provided, with the unlocking plane 613 located between the two locking planes 612. Since the angle adjustment assembly and the arc lock slider 3 are fixed in axial position, that is, the angle adjustment knob 4 will not move toward or away from the arc lock slider 3, when the angle adjustment knob 4 is rotated to abut against the locking plane 612, the pressure head 61 moves toward the upper cover 12, compressing the first spring 7, and the second pressing tooth 611 on the pressure head 61 can cooperate and fix with the first pressing tooth 122 at the corresponding position on the upper cover 12, thereby fixing the angle of the arc lock slider 3. When the angle adjustment knob 4 is rotated to the unlocking plane 613, the height of the unlocking plane 613 is lower than the locking plane 612. Under the elastic restoring force of the first spring 7, the pressing head 61 will move toward the angle adjustment knob 4 until the angle adjustment knob 4 contacts the unlocking plane 613. The angle adjustment knob 4 rotates 90 degrees from the locking plane 612 to the unlocking plane 613, placing the higher locking plane 612 on either side of the unlocking plane 613, without affecting the contact between the angle adjustment knob 4 and the lower unlocking plane 613.

[0066] Furthermore, a limit block 614 is provided at one end of the locking plane 612, and the limit blocks 614 of the two locking planes 612 are arranged diagonally. The limit block 614 is used to limit the rotation angle of the angle adjustment knob 4 to ensure the stability of the angle when the arc lock slider 3 is fixed. The positions of the two limit blocks 614 are set according to the rotation direction of the angle adjustment knob 4. Since the unlocking plane 613 is provided between the two locking planes 612, the height of the two locking planes 612 is higher than the unlocking plane 613, and therefore, there is no need to set a limit structure on the unlocking plane 613. The side walls of the locking planes 612 on both sides can limit the angle adjustment knob 4 located on the unlocking plane 613.

[0067] Furthermore, a transition slope 615 is provided between the locking plane 612 and the unlocking plane 613, and the two transition slopes 615 are arranged diagonally on the unlocking plane 613. The provision of the transition slope 615 makes the angle adjustment knob 4 smoother and more stable during the rotation process of the locking plane 612 and the unlocking plane 613.

[0068] In order to ensure the accuracy of the rotational position of the angle adjustment knob 4, the mating surface between the angle adjustment knob 4 and the fixed pressure block 6 is provided with a first positioning bead 41, the locking plane 612 is further provided with a locking positioning hole 6121, and the unlocking plane 613 is further provided with an unlocking positioning hole 6131. ​​The first positioning bead 41 can cooperate with the locking positioning hole 6121 or the unlocking positioning hole 6131. ​​When the angle adjustment knob 4 rotates from the locking plane 612 to the unlocking plane 613, when the first positioning bead 41 slides into the unlocking positioning hole 6131, it indicates that the angle adjustment knob 4 has rotated into place, ensuring the accuracy of the unlocking position of the angle adjustment knob 4 and avoiding affecting the adjustment angle of the arc lock slider 3. When the angle adjustment knob 4 rotates from the unlocking plane 613 to the locking plane 612, when the first positioning bead 41 slides into the locking positioning hole 6121, it indicates that the angle adjustment knob 4 has rotated into place, ensuring the accuracy of the locking position of the angle adjustment knob 4 and ensuring the accuracy of the angle of the arc lock slider 3.

[0069] It should be noted that the first positioning bead 41 and the second positioning bead 32 are also called ball plungers or spring plungers, and are a type of load-bearing device composed of a housing, a spring, a ball or a cylinder.

[0070] like Figure 4 and Figure 13 As shown, the latch lock assembly 2 includes a latch lock plate 21, which is provided with a lock hole 211. The lock rod assembly 9 includes a lock rod mounting plate 92 and a lock rod 91. The lock rod 91 is located at the center of the lock rod mounting plate 92, and both ends of the lock rod 91 extend out of the lock rod mounting plate 92. One end of the lock rod 91 can be locked with the lock hole 211, and the other end is provided with a locking handle 93. By rotating the lock rod 91 with the locking handle 93, the lock rod 91 can be locked with the lock hole 211. A second sliding groove 33 extending in the radial direction is provided on one side of the arc lock slider 3. The latch lock plate 21 is telescopically disposed in the second sliding groove 33, so that the latch lock plate 21 can be extended and retracted along the radial direction of the arc lock slider 3.

[0071] Specifically, the latch lock assembly 2 also includes a second spring 24. The latch lock piece 21 is configured in an L-shape, with the long arm of the L-shape extending into the second slot 33 and the short arm located outside the second slot 33, forming a handle 212 for the latch lock piece 21. The second spring 24 is positioned between the bottom of the second slot 33 and the long arm of the L-shaped latch lock piece 21. The lock hole 211 includes a through-hole 2111 and a locking hole 2112, which are interconnected. The locking hole 2112 has a smaller diameter than the through-hole 2111 and is located near the center of the arc lock slider 3. When the locking rod 91 is inserted into the through-hole 2111, the latch lock piece 21 moves toward the center of the arc lock slider 3 under the elastic force of the second spring 24, causing the locking rod 91 to engage the locking hole 2112, thus locking. To unlock, pressing the handle 212 downward compresses the second spring 24, causing the locking rod 91 to disengage from the locking hole 2112, thereby unlocking the lock.

[0072] In this embodiment, one end of the arc lock slider 3 is provided with an extension 34 extending toward the center of the circle. The inner side and top of the extension 34 are open. The latch lock assembly 2 also includes a locking plate side plate 22 and a locking plate cover plate 23. The locking plate side plate 22 is L-shaped. The L-shaped locking plate side plate 22 and the outer sidewall of the extension 34 together form a second slide slot 33. The locking plate cover plate 23 covers the top of the second slide slot 33. The width of the long arm of the L-shaped latch lock plate 21 is smaller near the short arm. The locking plate cover plate 23 is provided with a clearance hole that matches the width of the long arm near the short arm of the L-shaped latch lock plate 21. The long arm of the L-shaped locking plate side plate 22 and the outer sidewall of the extension 34 are arranged opposite each other, and both are provided with a clearance hole 341 that clears the lock rod 91. This arrangement facilitates the installation of the latch lock plate 21 and the second spring 24.

[0073] like Figure 10 As shown, to ensure the accuracy of angle adjustment, angle scale lines 124 are provided on both sides of the avoidance groove 121. Alignment blocks 616 are provided on opposite sides of the pressure head 61. The alignment blocks 616 are provided with a tip. When the angle adjustment knob 4 abuts against the unlocking plane 613 and the arc lock slider 3 is unlocked, the angle adjustment knob 4 drives the arc lock slider 3 to move within the first sliding groove 111. When the tip of the alignment block 616 aligns with the specified angle on the angle scale lines 124, the slider stops moving. Then, the angle adjustment knob 4 is rotated until it abuts against the locking plane 612, completing the angle adjustment of the latch lock assembly 2.

[0074] For example, Figure 2 As shown, the locking angle of the arc lock device is 0°, that is, the splicing angle of the two adjacent display screens connected by the arc lock device is 0°, which is horizontal splicing. Figure 11As shown, the locking angle of the arc lock device is -10° at this time, that is, the splicing angle of two adjacent display screens connected by the arc lock device is -10°; Figure 12 As shown, the locking angle of the arc locking device is 15° at this time, that is, the splicing angle of two adjacent display screens connected by the arc locking device is 15°.

[0075] like Figure 13 As shown, this embodiment further provides a display screen, which includes a box frame 100, on which the above-mentioned arc lock device is disposed. The arc lock mechanism is disposed on one side of the box frame 100, and the locking rod assembly 9 is disposed on the other side. Specifically, mounting brackets 101 are respectively disposed on opposite sides of the box frame 100. The arc lock seat 1 of the arc lock mechanism is fixed to the mounting bracket 101 on one side, and the locking rod mounting plate 92 of the locking rod assembly 9 is connected to the mounting bracket 101 on the other side.

[0076] In two adjacent box frames 100, the arc lock mechanism of one is connected to the locking rod assembly 9 of the other to achieve locking of the two box frames 100. At the same time, the arc lock device can also adjust the splicing angle of the two box frames 100, and is easy to operate, thereby improving the efficiency of angle adjustment.

[0077] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. The arc lock device is characterized in that: The invention comprises an arc lock mechanism and a lock rod assembly (9), wherein the arc lock mechanism comprises an arc lock seat (1) and a latch lock assembly (2), wherein the latch lock assembly (2) is arranged on one side of the arc lock seat (1), and the lock rod assembly (9) cooperates with the latch lock assembly (2) to lock; The arc lock mechanism also includes: An arc lock slider (3), wherein a first slide groove (111) extending in a circumferential direction is provided in the arc lock seat (1), the arc lock slider (3) is slidably arranged in the first slide groove (111), and both ends of the first slide groove (111) pass through the two side walls of the arc lock seat (1), and the latch lock assembly (2) is provided on one side of the arc lock slider (3); A fixed pressure block (6), wherein the arc lock slider (3) is provided with a mounting hole (31) whose center line extends radially, and the fixed pressure block (6) is telescopically arranged in the mounting hole (31); An angle adjustment assembly comprises an angle adjustment knob (4) and a connecting rod (5), wherein the connecting rod (5) is arranged at one end of the angle adjustment knob (4), and the connecting rod (5) passes through the fixed pressure block (6) and is rotatably connected to the arc lock slider (3), and the mating end surfaces of the fixed pressure block (6) and the angle adjustment knob (4) are provided with an angle locking position and an angle unlocking position. By rotating the angle adjustment knob (4), the angle adjustment knob (4) can be selectively matched with the angle locking position or the angle unlocking position, and the fixed pressure block (6) can be fixed to or released from the arc lock seat (1).

2. The arc lock device according to claim 1, characterized in that: The angle locking position includes a locking plane (612), and the angle unlocking position includes an unlocking plane (613). The height of the unlocking plane (613) is lower than that of the locking plane (612). Two locking planes (612) are provided, and the unlocking plane (613) is located between the two locking planes (612).

3. The arc lock device according to claim 2, characterized in that: A limiting block (614) is provided at one end of the locking plane (612), and the limiting blocks (614) of the two locking planes (612) are arranged diagonally.

4. The arc lock device according to claim 2, characterized in that: A transition slope (615) is provided between the locking plane (612) and the unlocking plane (613), and the two transition slopes (615) are arranged diagonally on the unlocking plane (613).

5. The arc lock device according to claim 2, characterized in that: The mating surfaces of the angle adjustment knob (4) and the fixed pressure block (6) are provided with a first positioning bead (41), the locking plane (612) is further provided with a locking positioning hole (6121), and the unlocking plane (613) is further provided with an unlocking positioning hole (6131), and the first positioning bead (41) can be matched with the locking positioning hole (6121) or the unlocking positioning hole (6131).

6. The arc lock device according to claim 1, characterized in that: The fixed pressure block (6) includes a pressure head (61) and a sleeve (62), the sleeve (62) is arranged at one end of the pressure head (61), and the outer diameter of the sleeve (62) is smaller than the outer diameter of the pressure head (61), the sleeve (62) is provided with a through hole (621) passing through the pressure head (61), the top of the arc lock seat (1) is provided with an avoidance groove (121) extending along the extension direction of the first slide groove (111), the pressure head (61) is arranged between the angle adjustment knob (4) and the arc lock seat (1), the sleeve (62) enters the mounting hole (31) through the avoidance groove (121), and the connecting rod (5) passes through the through hole (621) and enters the mounting hole (31) to be rotatably connected with the arc lock slider (3).

7. The arc lock device according to claim 6, characterized in that: The sleeve (62) is telescopically arranged in the mounting hole (31) through the first spring (7); the mounting hole (31) is arranged as a stepped hole, the first spring (7) is sleeved on the outer periphery of the connecting rod (5), and one end of the first spring (7) abuts against one end of the sleeve (62) away from the pressure head (61), and the other end abuts against the stepped surface of the stepped hole.

8. The arc locking device according to claim 7, characterized in that: The stepped hole is provided through the arc locking slider (3), and a threaded hole (51) is provided at one end of the connecting rod (5) away from the angle adjustment knob (4). A limit screw (8) extends from the small hole of the stepped hole and is screwed to the threaded hole (51).

9. The arc lock device according to claim 6, characterized in that: Along the extension direction of the avoidance groove (121), first pressing teeth (122) are provided on both sides of the outside of the avoidance groove (121), and a second pressing tooth (611) is provided on one end of the pressure head (61) close to the sleeve (62). The first pressing tooth (122) and the second pressing tooth (611) cooperate to fix the fixed pressure block (6) and the arc lock seat (1).

10. The arc locking device according to claim 6, characterized in that: The arc lock slider (3) is also provided with a second positioning bead (32), which is arranged on both sides of the mounting hole (31). Along the extension direction of the avoidance groove (121), a plurality of slider positioning holes (123) are arranged at intervals on both sides of the inside of the avoidance groove (121), and the second positioning bead (32) can selectively cooperate with one of the slider positioning holes (123).

11. The arc locking device according to any one of claims 1 to 10, characterized in that: The latch lock assembly (2) includes a latch lock piece (21), a second slide groove (33) extending radially is provided on one side of the arc lock slider (3), the latch lock piece (21) can be telescopically arranged in the second slide groove (33), the latch lock piece (21) is provided with a lock hole (211), and the lock rod assembly (9) includes a lock rod (91), and the lock rod (91) can cooperate with the lock hole (211) for locking.

12. A display screen, characterized in that The display screen includes a box frame (100), and the box frame (100) is provided with an arc locking device as described in any one of claims 1 to 11. The arc locking mechanism is provided on one side of the box frame (100), and the locking rod assembly (9) is provided on the other side. In two adjacent box frames (100), the arc locking mechanism of one is connected to the locking rod assembly (9) of the other.

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