Linkage lock mechanism and display screen

Abstract

This application provides a linkage locking mechanism and a display screen. The linkage locking mechanism includes: a locking pin assembly, which is slidably disposed and has a first position and a second position; a lever, which is rotatably disposed and has one end connected to the locking pin assembly; and an unlocking component, which is slidably disposed and has the other end of the lever connected to the unlocking component, and has an unlocking position and a locking position. Specifically, when the unlocking component is in the locked position, the locking pin assembly is in the first position; when the unlocking component is in the unlocking position, the locking pin assembly is in the second position. The technical solution provided by this application has a simple structure and is easier to operate, resulting in higher installation or disassembly efficiency.

Description

Technical Field

[0001] This application relates to the field of display device technology, and in particular to a linkage locking mechanism and a display screen. Background Technology

[0002] A large vertical display screen temporarily erected on-site is usually composed of multiple smaller screens that can be detachably connected in sequence. In order to keep the large screen vertical, the frame of each smaller screen usually has a foldable or unfoldable wind resistance frame at the back to support the smaller screen in a vertical position. The lower edge of the upper screen abuts against the upper edge of the lower screen, and the support column of the upper screen's wind resistance frame rests on the support column of the lower screen's wind resistance frame to form a continuous support column.

[0003] Therefore, the wind resistance frame needs to be strong enough to support the display screen and withstand the wind force acting on it. However, the existing wind resistance frames have low structural strength, poor wind resistance, and poor operability in unfolding and retracting. Summary of the Invention

[0004] In view of the above problems, this application presents an embodiment, the purpose of which is to provide a linkage locking mechanism and a display screen.

[0005] To achieve this objective, the embodiments of this application adopt the following technical solutions: This application provides a linkage locking mechanism, including: A locking pin assembly is slidably configured, and the locking pin assembly has a first position and a second position; The lever is rotatable and one end is connected to the locking pin assembly; The unlocking component is slidably configured, and the other end of the lever is connected to the unlocking component, which has an unlocking position and a locking position. Wherein, the unlocking component is located at the locking position, and the locking pin component is located at the first position; The unlocking component is located at the unlocking position, and the locking pin component is located at the second position.

[0006] Optionally, the lever and the locking pin assembly are symmetrically arranged on both sides of the unlocking component, and the locking pin assembly and the lever are arranged in a one-to-one correspondence.

[0007] Optionally, the rotation axis of the lever is located between the locking pin assembly and the unlocking assembly.

[0008] Optionally, the unlocking component includes: The unlocking component has at least one elongated hole spaced apart on both sides; and A slider, which passes through the elongated hole and can slide within the elongated hole; The upper and lower ends of the unlocking component are provided with linkage grooves, and the end of the lever away from the locking pin assembly abuts against the linkage groove.

[0009] Optionally, the unlocking component is provided with connecting rods at both the upper and lower ends, and the connecting rods are provided with at least one reinforcing rib in the circumferential direction; The linkage groove is located on the connecting rod.

[0010] Optionally, the unlocking component has a U-shaped cross-section, and the upper and lower ends of the middle enclosure wall of the unlocking component are provided with connecting rods of the same length as the side enclosure walls.

[0011] Optionally, the unlocking component further includes: A guide pin, one end of which is connected to the side of the unlocking component, and the other end of which has a stepped structure; A sleeve, wherein the sleeve is fitted around the outer periphery of the stepped structure, and the guide pin is slidable relative to the sleeve; and A first reset component is sleeved on the stepped structure, with one end of the first reset component abutting against the stepped surface of the stepped structure and the other end abutting against the pin sleeve.

[0012] Optionally, the locking pin assembly includes: A retractable lever hook, one end of which is provided with a locking hook; The retractable sliding pin is movably disposed within the retractable rod hook; When the locking pin assembly is in the first position, the retractable sliding pin extends into the hook groove of the locking hook; When the locking pin assembly is in the second position, the retracting sliding pin retracts into the retracting rod hook; The end of the retractable sliding pin opposite to the locking hook is provided with an abutment groove. The lever passes through the retractable rod hook and is inserted into the abutment groove, abutting against the groove wall.

[0013] Optionally, the locking pin assembly further includes: A connector, wherein the retractable sliding pin has a mounting groove, the connector passes through the retractable sliding pin and is located within the mounting groove, and the connector can slide along the mounting groove; and The second reset component is located in the mounting groove, with one end abutting against the connector and the other end abutting against the groove wall of the mounting groove.

[0014] Optionally, a receiving groove is provided on one side of the mounting groove, and when the locking pin assembly is in the first position, the connector is received in the receiving groove.

[0015] Optionally, a locking mark is provided on one side of the retractable sliding pin; The hook of the retractable rod is provided with a transparent display hole that matches the locking mark; When the locking pin assembly is in the first position, the display hole is aligned with the locking mark.

[0016] Optionally, the hook of the retractable lever is provided with a transparent drainage hole, the drainage hole is aligned with the lever, and the length of the drainage hole is greater than the movable length of the lever end.

[0017] Optionally, the hook of the retractable rod is provided with a connecting part, and a through groove is provided on one side of the connecting part. The end of the lever passes through the through groove and abuts against the abutting groove.

[0018] Optionally, the upper and lower ends of the groove wall that abuts against the lever are inclined in opposite directions.

[0019] Optionally, one end of the retractable sliding pin is provided with a guide slope.

[0020] Optionally, the upper and lower edges of one side of the locking hook are provided with a first guide surface.

[0021] Optionally, a first alignment mark is provided above the locking hook.

[0022] Optionally, one end of the retractable rod hook is provided with a groove.

[0023] Optionally, the lever includes a central portion and abutment portions located at both ends of the central portion, the abutment portions being connected to the locking pin assembly or to the unlocking assembly.

[0024] Optionally, the two abutting portions are provided with flanges facing away from each other, and the flanges abut against the locking pin assembly or the unlocking assembly.

[0025] Optionally, the upper and lower ends of the groove wall that abuts against the flange of the lever are inclined in opposite directions.

[0026] Optionally, the distance between the first position and the second position is a first distance, the distance between the locked position and the unlocked position is a second distance, and the ratio of the first distance to the second distance is a; The distance between the locking pin assembly and the rotation axis of the lever is a third distance, and the distance between the unlocking assembly and the rotation axis of the lever is a fourth distance. The ratio of the third distance to the fourth distance is b. a = b.

[0027] Accordingly, embodiments of this application also provide a display screen, including: Screen body; A frame, wherein the screen is disposed on the frame; and A wind resistance frame is detachably mounted on the side of the frame away from the screen body, and the wind resistance frame is provided with a linkage locking pin mechanism as described above.

[0028] The technical solution provided in this application embodiment includes, but is not limited to, a wind resistance frame applicable to a display screen. The wind resistance frame has two support frames, both of which can be rotatably mounted on the frame of the display screen. The upper and lower ends of the two support frames on the side away from the frame can be simultaneously locked or unlocked by the linkage locking mechanism. When the wind resistance frame is unfolded, the two support frames and the frame form a stable triangular support structure, further enhancing the strength and stability of the support. The unfolded state of the wind resistance frame is locked by the linkage locking mechanism to ensure the stability of the triangular support structure. When the wind resistance frame is folded, the folded state of the wind resistance frame is locked by the linkage locking mechanism to ensure that the wind resistance frame does not unfold, which is convenient for storage. Furthermore, it facilitates the hoisting of the display screen when installing the upper layer of the display screen. After hoisting to the installation position, the two support frames can be unfolded and locked. The structure is simple, the operation is simpler, and the installation or disassembly efficiency is higher. Attached Figure Description

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

[0030] Figure 1 A schematic diagram of the wind resistance frame in a supported state as provided in an embodiment of this application; Figure 2 A schematic diagram of a wind resistance frame folded into a stowed state according to an embodiment of this application; Figure 3 A partial exploded view of a support frame with a linkage locking mechanism is provided for one embodiment of this application; Figure 4 This is a schematic diagram of the linkage locking mechanism provided in one embodiment of this application; Figure 5 This is a schematic diagram of the structure of an unlocking component provided in one embodiment of this application; Figure 6 This is a schematic diagram of the structure of a retractable sliding pin provided in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of a locking pin assembly provided in an embodiment of this application; Figure 8 A schematic diagram of the lever structure provided in one embodiment of this application; Figure 9 A perspective view of a locking pin assembly located on a support frame according to an embodiment of this application; Figure 10 A schematic diagram of a support frame with a latch assembly is provided for one embodiment of this application; Figure 11 This is a schematic diagram of the structure of a latch assembly provided in one embodiment of this application; Figure 12 This is a schematic diagram of the structure of the latch assembly and the locking pin assembly provided in an embodiment of this application; Figure 13 A partial exploded view of the latch assembly and crossbeam provided in one embodiment of this application; Figure 14 for Figure 2 Enlarged view of point A in the middle.

[0031] In the diagram: 10. Wind resistance frame; 20. Frame; 21. Limiting rod; 22. First locking component; 100. Support frame; 101. Crossbeam; 107. Receiving opening; 102. Diagonal beam; 103. Longitudinal beam; 104. Connecting column; 105. Locking rod; 106. Second locking element; 110. Linkage locking mechanism; 111. Locking pin assembly; 1111. Retracting rod hook; 1014. Display hole; 1017. Drain hole; 1018. Lock hook; 1019. Groove; 1020. Connecting part; 1021. Through groove; 1022. First guide surface; 1023. First alignment mark; 1112. Retracting sliding pin; 1011. Mounting groove; 1012. Receiving groove; 1013. Locking mark; 1015. Abutment groove; 1016. Guide slope; 1113. Connecting piece; 1114. Second reset piece; 112. Lever; 1121. Central part; 1122. Abutting part; 1123. Flange; 113. Unlocking assembly; 1131. Unlocking component; 1101. Enclosing wall; 1102. Connecting rod; 1103. Elongated hole; 1104. Reinforcing rib; 1105. Linkage groove; 1132. Sliding component; 1133. Guide pin; 1134. Pin sleeve; 1135. First reset component; 120. Latch assembly; 121. Fixed step; 1211. Locking groove; 1212. Limiting wall; 1213. Second alignment mark; 122. Latch; 1221. Limiting groove; 1222. Second guide surface; 123. Buffer pad. Detailed Implementation

[0032] The drag frame is a crucial structural component providing support for vertical large screens. Given the current drag frame structure's insufficient strength to provide stable support for vertical screens, and the difficulty in locking or unlocking the drag frame, the inventors of this application, in addition to reasonably adding reinforcing beams to improve the drag frame's structural strength, also utilize a triangular stable support structure as the basis for arranging the reinforcing beams in the drag frame design to further increase structural strength. Considering the height of the drag frame, locking structures are provided at both the top and bottom ends. These two locking structures can lock or unlock simultaneously to reduce assembly or disassembly steps, facilitating the loading and unloading of the drag frame. The following embodiments are thus derived.

[0033] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present application, not the entire structure.

[0034] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0037] Figure 3 A partial exploded view of a support frame with a linkage locking mechanism is provided for one embodiment of this application; Figure 4 This is a schematic diagram of the linkage locking mechanism provided in one embodiment of this application; see also Figure 3 and Figure 4 .

[0038] This application provides a linkage locking mechanism 110, including: a locking pin component 111, a lever 112, and an unlocking component 113.

[0039] The locking pin assembly 111 is slidably disposed and has a first position and a second position; in some possible embodiments, the locking pin assembly 111 can be used in conjunction with the latch assembly 120 and has a first position inserted into the latch assembly 120 and a second position retracted from the latch assembly 120.

[0040] The lever 112 is rotatable and one end is connected to the locking pin assembly 111; the unlocking assembly 113 is slidable and the other end of the lever 112 is connected to the unlocking assembly 113. The unlocking assembly 113 has an unlock position and a locking position; wherein, the unlocking assembly 113 is in the locking position and the locking pin assembly 111 is in the first position; the unlocking assembly 113 is in the unlock position and the locking pin assembly 111 is in the second position.

[0041] The technical solutions provided in the embodiments of this application are described in [reference]. Figure 1 and Figure 2 The linkage locking mechanism 110 includes, but is not limited to, the wind resistance frame 10 applicable to the display screen. The wind resistance frame 10 has two support frames 100, both of which are rotatably mounted on the frame 20 of the display screen. The upper and lower ends of the two support frames 100 on the side opposite to the frame 20 can be locked or unlocked simultaneously through the linkage locking mechanism 110. When the wind resistance frame 10 is unfolded, the two support frames 100 and the frame 20 form a stable triangular support structure, further enhancing the strength and stability of the support. The linkage locking mechanism 110 locks the unfolded state of the wind resistance frame 10 to ensure the stability of the triangular support structure. When the wind resistance frame 10 is folded, the linkage locking mechanism 110 locks the folded state of the wind resistance frame 10 to ensure that the wind resistance frame 10 does not unfold, facilitating storage. It also facilitates the hoisting of the display screen when installing the upper layer. After hoisting to the installation position, the two support frames 100 can be unfolded and locked. The structure is simple, the operation is simpler, and the installation or disassembly efficiency is higher.

[0042] The technical solutions provided in the embodiments of this application will be described in further detail below.

[0043] This application provides an assembled large screen that can be used as a temporary 3D screen for display in temporary venues, such as outdoor concert screens or temporary stage screens. In some embodiments of this application, a feasible structure for the assembled large screen includes multiple sequentially arranged displays, with adjacent displays detachably connected to each other, allowing the assembled large screen to be assembled and disassembled for easy transportation and reuse. In most cases, temporary 3D screens do not have a vertical support structure similar to a pre-installed wall; therefore, the structure capable of supporting the assembled large screen is particularly important. It not only determines the wind resistance of the assembled large screen but also needs to bear part of its weight and facilitate disassembly.

[0044] Therefore, in some embodiments of this application, see Figure 1 and Figure 2 The display screen includes a screen body, a frame 20, and a wind resistance frame 10. The screen body is mounted on one side of the frame body and is used to display preset content to the audience. The wind resistance frame 10 is located on the other side of the frame 20 and is used to support the frame 20 when it is erected. The assembled screen also includes a base beam 101 and a bottom support. The base beam 101 is installed on the mounting position of the assembled screen, and the assembled screen sits on the base beam 101 to provide support. The bottom support is set perpendicular to the base beam 101, and one end of the bottom support is connected to the center of the base beam 101. The display frame 20, located at the bottom of the assembled screen, is supported above the base beam 101, and the wind resistance frame 10 is detachably mounted on the bottom support. Compared to the wind resistance frame 10 directly contacting the mounting surface, the bottom support increases the contact area with the mounting surface to increase the stability of the support. After the upper display frame 20 is connected to the lower display frame 20, the bottom end of the corresponding upper wind resistance frame 10 can be screwed onto the top end of the lower wind resistance frame 10. Disassembly and installation can be achieved by screwing, which is simple to operate and has a reliable structure.

[0045] Therefore, each display screen located at the bottom layer corresponds to a bottom bracket. The end of the bottom bracket can be connected to the base beam 101 by welding or by screwing. The screwing method facilitates disassembly, storage, and transportation. The base beam 101 can be a single piece or composed of multiple smaller beams 101 that can be detachably connected in sequence, facilitating storage and transportation. Furthermore, its length can be adjusted according to the required size of the assembled large screen.

[0046] Since the upper-level display screen's air resistance frame 10 is installed on the corresponding lower-level display screen's air resistance frame 10, the entire air resistance frame 10 of the assembled large screen is located at the rear of the screen body. Multiple, spaced-apart, continuous support frame groups of the same height as the assembled large screen provide support for each small display screen. Compared to the assembly of a large screen with only a few support frame groups at the rear, where only a portion of the display screens are connected to the support frame groups and the rest rely on the connections between adjacent display screens, this method offers higher support strength and better stability.

[0047] In some scenarios, such as a large assembled screen located in a fixed position on the exterior wall of a shopping mall, the fixed installation location eliminates the need for the support of the wind resistance frame 10, making the display screen with the wind resistance frame 10 unusable. Therefore, to diversify the application scenarios of the assembled large screen, in some embodiments of this application, the wind resistance frame 10 is detachably mounted on the frame 20. In scenarios where the wind resistance frame 10 is not required, it can be removed. Since the screen body is easily damaged by external impacts, the screen body needs to be placed in a storage box during storage and installation. The wind resistance frame 10 not only increases the weight of the display screen but also increases its volume, hindering storage. Therefore, the detachable wind resistance frame 10 facilitates the storage of the display screen.

[0048] The detachable design can be achieved by having a first connecting member on the side of the frame 20 and a second connecting member on the top of the drag frame 10. When the second connecting member 1113 aligns and abuts against the first connecting member 1113, the mounting holes on the first and second connecting members 1113 are aligned. A detachable pin passes through both the mounting holes on the first and second connecting members 1113 to mount the drag frame 10 onto the frame 20. The drag frame 10 can be detached and unlocked from the frame 20 by pulling the detachable pin out of the mounting hole. The structure is simple and the operation is convenient. Different disassembly schemes can also be adopted in other embodiments, as long as the detachable connection between the drag frame 10 and the frame 20 can be achieved. This application does not impose specific limitations.

[0049] It is understandable that the long support frame assembly that can support the large screen is formed by stacking the wind resistance frames 10 on the display screen. Therefore, the overall structural strength of the support frame assembly depends on the structural strength of each wind resistance frame 10. The stronger the structural strength of the wind resistance frame 10, the stronger the overall structural strength of the support frame assembly, the stronger the support stability, and the higher the wind resistance resistance.

[0050] Therefore, in some embodiments of this application, please refer to Figures 1-2As shown, the wind resistance frame 10 includes two support frames 100. A support frame 100 is provided on each side of the display screen frame 20. Each support frame 100 includes at least three horizontal beams 101 spaced vertically and diagonal beams 102 located diagonally between adjacent horizontal beams 101. More beams result in better structural strength. Furthermore, the diagonal beams 102 cause the support frame 100 to consist of multiple triangles, which provide stability. Compared to a structure with only horizontal beams 101 and no diagonal beams 102, or only horizontal beams 101 and vertical beams, the structural strength is higher. While maintaining structural strength, the number of horizontal beams 101 can be appropriately reduced to lower cost and weight. In this embodiment, there are three horizontal beams 101 and two diagonal beams 102. Of course, in other embodiments, the number of horizontal beams 101 and diagonal beams 102 can be appropriately increased or decreased according to the height of the frame 20. This application does not impose specific limitations; any structure consistent with the support frame 100 of this application falls within the protection scope of this application.

[0051] If two adjacent inclined beams 102 have the same inclination direction, that is, if the two identical inclined beams 102 are parallel, then the support frame 100 consists of only a few scattered triangles. If the inclination directions of the two inclined beams 102 are set to opposite directions, then the support frame 100 not only has a few scattered triangles, but adjacent triangles can also form a larger triangle, thus further increasing the structural strength of the support frame 100. Therefore, please refer to... Figures 1-2 As shown, in some embodiments of this application, the inclination directions of two adjacent inclined beams 102 are opposite.

[0052] When assembling a large screen, the wind resistance bracket 10 is usually installed on the frame 20 first. The large screen is then assembled after all the wind resistance brackets 10 are installed on the display screen. If the wind resistance brackets 10 are in a supporting state, it is not only inconvenient for storage and transportation, but also takes up a large amount of space after being installed on the frame 20, making it difficult to accommodate numerous displays with the wind resistance brackets 10 in a supporting state at the installation site. However, if the large screen is assembled immediately after installing the wind resistance brackets 10 on the frame 20, it will result in low assembly efficiency.

[0053] To address the aforementioned problems, please refer to some embodiments of this application. Figures 1-2As shown, the support frame 100 is rotatably mounted on the frame 20 and can be unfolded relative to the frame 20 or folded to one side of the frame 20. The lateral length of the support frame 100 is greater than half the lateral length of the frame 20. The upper and lower ends of the two support frames 100 on the side away from the frame 20 can be locked or unlocked simultaneously. Therefore, when the support frame 100 is unfolded and locked on the side away from the frame 20, the two support frames 100 can form a stable triangular support shape with the frame 20, ensuring the stability of the support. The simultaneous locking and unlocking of the upper and lower ends of the two support frames 100 on the side away from the frame 20 allows the wind resistance frame 10 to remain in place after the frame 20 is installed, facilitating storage. It also facilitates the hoisting of the display screen when installing and assembling the upper layer of the large screen. After hoisting to the installation position, the two support frames 100 can be unfolded and locked, and only one unlocking action is needed to simultaneously unlock the upper and lower locking structures of the support frame 100, making the operation simple.

[0054] Specifically, in some embodiments of this application, please refer to Figures 1-2 As shown, the support frame 100 also includes longitudinal beams 103, which are connected to the side of the crossbeams 101 away from the frame 20. One of the longitudinal beams 103 is a connecting column 104. The upper and lower ends of the connecting column 104 are provided with mutually cooperating connecting structures. The connecting column 104 is a component connecting the wind resistance frames 10 of the upper and lower displays. It not only has a connecting function but also bears the main supporting function. Therefore, the strength of the connecting column is higher than that of the crossbeams 101, diagonal beams 102, and ordinary longitudinal beams 103. In some embodiments of this application, the crossbeams 101, diagonal beams 102, and ordinary longitudinal beams 103 can all be made of square steel, while the connecting column 104 needs to be made of round tubes with thicker material and larger diameter. As long as the mechanical properties can be met, this application does not specifically limit the specific shape and parameters of the connecting column 104. Both the upper and lower ends of the connecting support column 104 on the side opposite to the crossbeam 101 are equipped with latch assemblies 120. The longitudinal beam 103 on the other support frame 100 serves as a locking rod 105, which is equipped with a linkage locking pin mechanism 110. The linkage locking pin mechanism 110 has a locked state where both latch assemblies 120 are simultaneously inserted, and an unlocked state where both latch assemblies 120 are simultaneously retracted. Through the linkage locking pin mechanism 110, both locking structures can be unlocked with only one operation. Compared to unlocking the operating structures separately, this method is simpler and has higher installation or disassembly efficiency.

[0055] Furthermore, in some embodiments of this application, please refer to Figures 3-6As shown, one possible structure of the linkage locking mechanism 110 includes a locking pin assembly 111, a lever 112, and an unlocking assembly 113. The locking pin assembly 111 is slidably disposed and has a first position inserted into the latch assembly 120 and a second position retracted from the latch assembly 120. It is understood that since the two support frames 100 have identical structural shapes, when the two support frames 100 are locked on the side opposite to the frame 20, it can only be a lateral lock; therefore, the locking pin assembly 111 slides laterally. The lever 112 is rotatably disposed on the locking rod 105, with one end connected to the locking pin assembly 111 and the other end connected to the unlocking assembly 113. The unlocking assembly 113 is slidably disposed on the locking rod 105 in a direction perpendicular to the locking rod 105 and has an unlocked position and a locked position. The rotation axis of lever 112 is located between the locking pin assembly 111 and the unlocking assembly 113. When the unlocking assembly 113 moves toward the locking lever 105, lever 112 rotates around the rotation axis. The end of lever 112 connected to the locking pin assembly 111 then moves the locking pin assembly 111 away from the latch assembly 120, thereby unlocking. When the unlocking assembly 113 moves away from the locking lever 105, lever 112 rotates around the rotation axis. The end of lever 112 connected to the locking pin assembly 111 then moves the locking pin assembly 111 toward the latch assembly 120, inserting the locking pin assembly 111 into the latch assembly 120, thereby locking. Therefore, when the unlocking component 113 is located away from the locking lever 105, it is in the locked position, and the locking pin component 111 is in the first position inserted into the latch assembly 120, with the linkage locking pin mechanism 110 in the locked state. When the unlocking component 113 is located near the locking lever 105, it is in the unlocked position, and the locking pin component 111 is in the second position retracted from the latch assembly 120, with the linkage locking pin mechanism 110 in the unlocked state. The locking pin component 111 corresponds one-to-one with the latch assembly 120, and the lever 112 is also configured one-to-one with the locking pin component 111. The unlocking component 113 can simultaneously control the rotation of both levers 112, thereby simultaneously controlling the positions of both locking pin components 111.

[0056] Specifically, in some embodiments of this application, please refer to Figures 3-5As shown, the unlocking component 113 includes an unlocking member 1131 and a sliding member 1132. The unlocking member 1131 surrounds one side of the locking rod 105. At least one elongated hole 1103 is provided on both sides of the unlocking member 1131 at intervals. The sliding member 1132 passes through the elongated hole 1103 and is connected to the locking rod 105. The sliding member 1132 can slide within the elongated hole 1103. When a force is applied to the unlocking member 1131 to move towards the locking rod 105, the unlocking member 1131 moves along with the elongated hole 1103. At this time, the sliding member 1132 slides within the elongated hole 1103. The cooperation between the sliding member 1132 and the elongated hole 1103 can limit the position of movement of the unlocking component 113 and prevent the unlocking member 1131 from overtraveling. In some embodiments of this application, each side of the unlocking member 1131 has two elongated holes 1103 arranged vertically at intervals, making the unlocking member 1131 more stable during movement. Of course, there may be more than two in other embodiments, and this application does not make a specific limitation. The upper and lower ends of the unlocking member 1131 are provided with linkage grooves 1105. The end of the lever 112 away from the locking pin assembly 111 extends into the linkage groove 1105 and abuts against the inner wall of the linkage groove 1105. More specifically, the lower end of the upper lever 112 extends into the upper linkage groove 1105, while the upper end of the lower lever 112 extends into the lower linkage groove 1105. When the unlocking component 1131 moves from the unlocked position to the locked position or from the locked position to the unlocked position, the groove wall of the linkage groove 1105 drives the ends of the upper and lower levers 112 located in their respective linkage grooves 1105 to move together. Then, the upper and lower levers 112 will rotate around their respective rotation axes, so that the upper end of the upper lever 112 drives the upper locking pin assembly 111 to move, while the lower end of the lower lever 112 drives the lower locking pin assembly 111 to move. The structure is simple and the operation is convenient.

[0057] In some embodiments of this application, the locking rod 105 has a hollow structure, and the lever 112 is rotatably located inside the locking rod 105, which is not only aesthetically pleasing, but also protected by the locking rod 105 from damage.

[0058] Since the locking pin assembly 111 moves a certain distance from the first position to the second position, if the distance is insufficient, the locking pin assembly 111 cannot properly lock the latch assembly 120, and the latch assembly 120 may slip out. However, if the distance is too long, the locking pin assembly 111 will collide when it extends. According to the lever 112 principle, the position of the rotation axis on the lever 112 can be set by the first distance between the first and second positions and the second distance between the unlocking and locking positions to ensure that when the unlocking member 1131 moves within the second distance range, the locking pin assembly 111 moves exactly within the first range. Specifically, in some embodiments of this application, the distance between the first and second positions is the first distance, the distance between the locking and unlocking positions is the second distance, the ratio of the first distance to the second distance is a, the distance between the locking pin assembly 111 and the rotation axis of the lever 112 is the third distance, the distance between the unlocking member 113 and the rotation axis of the lever 112 is the fourth distance, the ratio of the third distance to the fourth distance is b, and according to the lever 112 principle, a=b. In other words, after determining the first distance and the second distance, the position of the rotation axis of lever 112 on lever 112 can be obtained according to the ratio a. This ensures that when unlocking member 1131 moves from the unlocked position to the locked position, the extended length of locking pin assembly 111 can effectively lock latch assembly 120; and when unlocking member 1131 moves from the locked position to the unlocked position, locking pin assembly 111 can retract without interfering with latch assembly 120.

[0059] Please refer to Figure 5 As shown, since the unlocking member 1131 is surrounded on one side of the locking rod 105, that is, the cross-section of the unlocking member 1131 is U-shaped and surrounds the locking rod 105 on three sides, if the linkage groove 1105 is located on the three enclosing walls 1101 of the unlocking member 1131, then the lever 112 must extend out of the locking rod 105 to enter the linkage groove 1105, which will lead to an unsightly problem. Therefore, in some embodiments of this application, the upper and lower ends of the middle enclosing wall 1101 of the unlocking member 1131 facing the locking rod 105 are provided with connecting rods 1102 of the same length as the side enclosing walls 1101. The locking rod 105 has a clearance hole at the position of the connecting rod 1102. The connecting rod 1102 extends into the clearance hole and can move along the clearance hole with the unlocking member 1131 as a whole. Since the connecting rod 1102 is only connected to the middle enclosing wall 1101 at its end, at least one reinforcing rib 1104 is provided circumferentially on the connecting rod 1102 to increase its strength. The end of the reinforcing rib 1104 away from the locking rod 105 is also connected to the middle enclosing wall 1101. The linkage groove 1105 is located on the portion of the connecting rod 1102 that is located in the locking rod 105 to ensure that the lever 112 will not protrude from the locking rod 105.

[0060] To prevent the unlocking component 113 from sliding towards the locking lever 105 when the unlocking component 113 is in the locked position, causing the unlocking component 113 to disengage from the locked position and move to the unlocked position without human intervention, thus creating a hazard, please refer to the following: Figures 3-4 As shown, in some embodiments of this application, the unlocking assembly 113 further includes a guide pin 1133, a sleeve 1134, and a first reset member 1135. One end of the guide pin 1133 abuts against the side of the unlocking member 1131 facing the locking rod 105. The locking member passes through the unlocking member 1131 and is screwed onto the end of the guide pin 1133 that abuts against the unlocking member 1131 to connect the guide pin 1133 and the unlocking member 1131. The other end of the guide pin 1133 has a stepped structure. The sleeve 1134 passes through the locking rod 105 and is sleeved on the outer periphery of the stepped structure. The guide pin 1133 can slide relative to the sleeve 1134. The locking member passes through the locking rod 105 side of the sleeve 1134 and is screwed onto the sleeve 1134 to fix the sleeve to the locking rod 105. The locking member can be a screw, bolt, or rivet, as long as it has a connecting function. This application does not make specific limitations on this. The first reset member 1135 is sleeved on the stepped structure, with one end abutting against the stepped surface of the stepped structure and the other end abutting against the pin sleeve 1134. When an unlocking force is applied to the unlocking member 1131 to move toward the locking rod 105, the first reset member 1135 is compressed, and an internal restoring elastic force is generated. When the unlocking force is removed, the unlocking member 1131 moves toward the direction away from the locking rod under the action of the restoring elastic force of the first reset member 1135, so as to realize that the locking pin assembly 111 locks the latch assembly 120. When the locking pin assembly 111 locks the latch assembly 120, the first reset member 1135 can limit the unlocking assembly 113 to the locked position. The unlocking member 1131 cannot move without the unlocking force. Even if the unlocking member 1131 is impacted by an external force, the unlocking member 1131 will move a certain distance toward the locking rod 105 under the impact force. However, as long as the distance is less than the second distance, the unlocking member 1131 will return to the locked position of the unlocking assembly 113 under the reset force of the first reset member 1135.

[0061] In some embodiments of this application, please refer to Figures 1-3 As shown, the unlocking element 1131 is located on the side of the locking lever 105 facing the display screen, so as to avoid becoming a protrusion and thus save the space occupied by the support bracket 100.

[0062] Please refer to Figure 3 , Figure 4 and Figures 6-7As shown in some embodiments of this application, one possible structure of the locking pin assembly 111 is as follows: it includes a retractable lever hook 1111 and a retractable sliding pin 1112. One end of the retractable lever hook 1111 is sleeved inside the crossbeam, and the other end is provided with a locking hook 1018 that matches the latch assembly 120. The locking hook 1018 can hook the latch 122 of the latch assembly 120. The retractable sliding pin 1112 is movably disposed inside the retractable lever hook 1111. The locking pin assembly 111 is located in the first position. When the latch assembly 111 is in the second position, the retracting slide pin 1112 extends into the hook groove of the locking hook 1018 to block the opening of the locking hook 1018 groove, and the latch 122 of the latch assembly 120 is locked within the locking hook 1018 groove to achieve locking. When the locking pin assembly 111 is in the second position, the retracting slide pin 1112 retracts into the retracting lever hook 1111, at which time the opening of the locking hook 1018 groove is opened, and the latch 122 can be rotated out from the locking hook 1018 groove as the support frame 100 rotates to achieve unlocking. The end of the retracting slide pin 1112 away from the locking hook 1018 is provided with an abutment groove 1015, which is aligned with the hollow cavity of the locking lever 105. The end of the lever 112 away from the unlocking member 1131 passes through the locking lever 105 and the retracting lever hook 1111 in sequence and inserts into the abutment groove 1015, and abuts against the groove wall of the abutment groove 1015. When lever 112 rotates, the end of lever 112 acts on the groove wall of abutment groove 1015, which can push the groove wall of abutment groove 1015 to realize the sliding of retractable sliding pin 1112.

[0063] It is understandable that, since the dimensions of the retractable sliding pin 1112 and the connecting rod 1102 are limited, if the width of the lever 112 is too large, not only will there be installation interference, but there will also be insufficient movement space within the abutment groove 1015 or the linkage groove 1105. Therefore, in some embodiments of this application, please refer to... Figure 4 and Figure 8As shown, lever 112 includes a central portion 1121 and abutment portions 1122 located at both ends of the central portion 1121. The abutment portions 1122 are connected to the locking pin assembly 111 or the unlocking assembly 113. Specifically, the abutment portions 1122 are located within the linkage groove 1105 or the abutment groove 1015 and abut against the groove wall of the linkage groove 1105 or the groove wall of the abutment groove 1015. The width of the abutment portion 1122 is smaller than the width of the central portion. The rotation axis is located on the central portion, and the width of the abutment portion 1122 is smaller than the width of the linkage groove 1105 and the abutment groove 1015. The linkage groove 1105 and the abutment groove 1015 can only accommodate the abutment portion 1122 and cannot accommodate the central portion. Therefore, only the abutment portion 1122 of lever 112 is located within the linkage groove 1105 or the abutment groove 1015. Since lever 112 rotates around its axis of rotation, even if the displacement of the abutment portion 1122 of lever 112 is very small and close to a straight line, it is still an arc. This results in relative displacement between the abutment portion 1122 and the wall of the abutment groove 1015 or the linkage groove 1105 when the sliding pin 1112 slides, rather than abutting at a fixed point. Therefore, if the contact area between the abutment portion 1122 of lever 112 and the wall of the abutment groove 1015 or the linkage groove 1105 is too large, it will increase friction, hindering the movement of the sliding pin 1112. To address this issue, in some embodiments of this application, two abutment portions 1122 at both ends of the lever 112 are provided with flanges 1123 facing away from each other. The flanges 1123 abut against the wall of the abutment groove 1015 or the wall of the linkage groove 1105. The flanges 1123 can effectively reduce the contact area between the abutment portion 1122 and the groove wall, reduce friction, and thus facilitate the sliding of the retractable sliding pin 1112.

[0064] Because the movement trajectory of the abutment portion 1122 is arc-shaped, the abutment portion 1122 is inclined relative to the groove wall of the abutment groove 1015 and located in the abutment groove 1015. This results in the lower end of the flange 1123 of the abutment portion 1122 abutting against the abutment groove 1015. To solve this problem, please refer to some embodiments of this application. Figure 4 and Figure 8As shown, the upper and lower ends of the groove wall where the abutment groove 1015 abuts against the flange 1123 of the lever 112 are inclined in opposite directions to form a clearance structure, preventing the portion of the abutment part 1122 located at the lower end of the flange 1123 from abutting against the groove wall of the abutment groove 1015. This ensures that the groove wall of the abutment groove 1015 only abuts against the flange 1123 on the abutment part 1122. Furthermore, this design distinguishes the portion of the groove wall where the abutment groove 1015 abuts against the flange 1123 from the portion where it does not abut. This allows for surface processing of the portion of the groove wall where the flange 1123 abuts against the groove wall to reduce surface roughness, further reducing the friction between the flange 1123 and the groove wall, and facilitating the sliding of the retractable sliding pin 1112. Compared to processing the entire surface of the groove wall of the abutment groove 1015 to reduce roughness, this method is less difficult.

[0065] To ensure the stability and security of the lock, please refer to... Figure 4 and Figure 7 As shown, in some embodiments of this application, the locking pin assembly 111 further includes a connector 1113 and a second reset member 1114. The retractable sliding pin 1112 has a mounting groove 1011. The connector 1113 passes through the retractable rod hook 1111 and is located within the mounting groove 1011. The connector 1113 can slide within the mounting groove 1011. The connector 1113 can be a bolt, which passes through one side of the retractable rod hook 1111 and has its threaded portion screwed onto the other side of the retractable rod hook 1111. The connector 1113 not only restricts the position of the retractable sliding pin 1112 within the retractable rod hook 1111, but also, due to the length of the mounting groove 1011, limits the sliding stroke of the retractable sliding pin 1112, preventing overtravel. The second reset member 1114 is located within the mounting groove 1011, with one end abutting against the connector 1113 and the other end abutting against the groove wall of the mounting groove 1011. When the locking pin assembly 111 is in the second position, the second reset member 1114 is in a compressed state, generating a reset elastic force internally. When the unlocking force applied to the unlocking member 1131 is removed, the lever 112 can not only rotate under the reset elastic force of the first reset member 1135, but the closing slide pin 1112 will also move towards the latch assembly 120 under the reset elastic force of the second reset member 1114, ensuring the stability of the lock and ensuring that the latch assembly 120 will not disengage from the locking pin assembly 111. Both the first reset member 1135 and the second reset member 1114 can be springs or elastic rubber pads, etc., as long as they can generate a reset elastic force internally in the compressed state. This application does not make specific limitations in this regard.

[0066] In some embodiments of this application, please refer to Figure 4 and Figure 6As shown, the mounting groove 1011 has a receiving groove 1012 on the side opposite to the latch assembly 120. When the locking pin assembly 111 is in the first position, the connector 1113 is received in the receiving groove 1012. The shape of the receiving groove 1012 follows the shape of the connector 1113. For example, if the part of the connector 1113 located in the mounting groove 1011 is cylindrical, then the receiving groove 1012 is also a cylindrical groove. When the locking pin assembly 111 is in the locked first position, the receiving groove 1012 can restrict the connection position and prevent the connector 1113 from moving up and down in the retracting rod hook 1111.

[0067] If the unlocking element 1131 needs to be moved while the locking pin assembly 111 is locked to the latch assembly 120, it will cause assembly problems. Please refer to [reference needed]. Figure 1 , Figure 4 and Figure 6 As shown, in some embodiments of this application, the end of the retractable slide pin 1112 facing away from the crossbeam 101 is provided with a guide slope 1016 inclined toward the crossbeam 101. When the locking pin assembly 111 is in the locked first position, the guide slope 1016 is located on the side facing away from the lock latch 122. That is, under the action of the first reset member 1135 and the second reset member 1114, the locking pin assembly 111 will be in the first position even if it is not locked with the lock latch assembly 120. When the locking pin assembly 111 is locked with the lock latch assembly 120, the guide slope 1016 of the retractable slide pin 1112 will first abut against the lock latch 122. At this time, if a moving force is applied to the retractable slide pin 1112 toward the lock latch 122, the lock latch 122 will apply a vertical force to the guide slope 1016. Then the force perpendicular to the guide slope 1016 will have The driving force that drives the retractable sliding pin 1112 to move toward the crossbeam 101 causes the locking pin assembly 111 to automatically move from the locked first position to the unlocked second position, allowing the latch 122 to enter the groove of the locking hook 1018. After the latch 122 no longer applies a vertical force to the guide ramp 1016, the retractable sliding pin 1112 extends into the groove of the locking hook 1018 under the reset spring force of the first reset member 1135 and the second reset member 1114, closing the opening of the groove of the locking hook 1018, thus locking the latch assembly 120 with the locking pin assembly 111. This process only requires the support frame 100 with the latch assembly 120 to rotate to the unfolded position, and the connecting column 104 to connect with the lower connecting column 104 or the bottom bracket, before applying a locking force to the support frame 100 with the locking pin assembly 111 to move toward the support frame 100 with the latch assembly 120, thus facilitating locking.

[0068] To facilitate the operator's confirmation that the device has been locked after locking, please refer to the following embodiments in this application: Figures 6-7As shown, the retractable sliding pin 1112 has a locking mark 1013 on the side opposite to the crossbeam 101. The retractable lever hook 1111 has a transparent display hole 1014 that matches the locking mark 1013. When the locking pin assembly 111 is in the first locked position, the display hole 1014 is aligned with the locking mark 1013. At this time, the locking mark 1013 can be observed from the outside of the retractable lever hook 1111 through the display hole 1014, indicating that it is in a locked state. If the locking mark 1013 is not observed from the display hole 1014, it means that it is not locked and needs to be locked again. The locking mark 1013 can be a colored pattern, such as a circle filled with red. When the display hole 1014 is aligned with the locking mark, the display hole 1014 and the circle filled with red are coaxial.

[0069] As can be seen from the above locking process, the guide slope 1016 of the retractable sliding pin 1112 will be subjected to the impact force of the latch 122. However, since the retractable sliding pin 1112 can slide, after unlocking under the impact force, part of the impact force will be attenuated. The remaining impact force will be borne by the groove of the locking hook 1018. Therefore, the locking hook 1018 needs to have sufficient self-strength and installation strength to resist the impact force. Therefore, please refer to... Figure 7 and Figure 9 As shown, in some embodiments of this application, the retractable lever hook 1111 is provided with a connecting portion 1020, which is sleeved in the hollow cavity at the end of the locking lever 105, thereby enhancing the connection strength between the retractable lever hook 1111 and the locking lever 105. A through groove 1021 is provided on one side of the connecting portion 1020, and the abutting portion 1122 of the lever 112 passes through the through groove 1021 and abuts against the groove wall of the abutting groove 1015. Furthermore, the width of the locking hook 1018 is greater than the width at other locations of the retractable lever hook 1111 to increase the strength at the locking hook 1018 location.

[0070] Although the clearance hole allows the connecting rod 1102 to pass through, liquid can also enter the cavity inside the locking rod 105 through the clearance hole. To prevent liquid from accumulating in the cavity of the locking rod 105, please refer to some embodiments of this application. Figure 7 and Figure 9 As shown, the hook 1111 of the retractable rod located inside the crossbeam 101 at the bottom of the support frame 100 has a through-hole 1017. The drain hole 1017 is aligned with the abutting end of the lever 112, and the length of the drain hole 1017 is greater than the movable length of the end of the lever 112. This allows the drain hole 1017 to align with the hollow cavity of the locking rod 105, allowing water entering the hollow cavity to flow out through the drain hole 1017, preventing water from accumulating in the locking rod 105 and avoiding increasing its weight. It should be noted that, for the reader's convenience in understanding the structure of the drain hole 1017, Figure 7 and Figure 9The locking pin assembly is reversed 180 degrees; the drain hole 1017 should actually be located at the bottom of the support frame 100, not... Figure 7 and Figure 9 The top of the diagram.

[0071] In some embodiments of this application, please refer to Figures 10-11 As shown, the latch assembly 120 also includes a fixed step 121. Fixed steps 121 are fitted on both the upper and lower ends of the connecting column 104. The top beam 101 and the bottom beam 101 are connected to the fixed steps 121 at corresponding positions on the side away from the frame 20. The fixed step 121 is provided with a locking groove 1211 on the side away from the beam 101. The latch 122 is vertically set in the locking groove 1211. When the locking pin assembly 111 is in the first position, the locking hook 1018 is hooked around the circumference of the latch 122. The retracting sliding pin 1112 is located on the side of the latch 122 away from the hook groove and abuts against the locking hook 1018 to ensure the stability of the lock. After locking, there will be no relative displacement between the two support frames 100, thereby ensuring the stability of the support.

[0072] Further, please refer to Figures 10-12 As shown, in some embodiments of this application, a limiting groove 1221 is provided on the side of the latch 122 away from the locking groove 1211. When the locking pin assembly 111 is in the first locked position, the retracting slide pin 1112 is located in the limiting groove 1221 and abuts against the groove wall of the limiting groove 1221. The latch 122 of this application is cylindrical. The structure of the limiting groove 1221 changes the line abutment between the retracting slide pin 1112 and the cylindrical latch 122 to a surface abutment, thereby increasing the abutment strength. The force-bearing surface of the retracting slide pin 1112 is larger, making the force on the retracting slide pin 1112 more uniform and preventing damage to the retracting slide pin 1112. In addition, the limiting groove 1221 can accommodate the retracting slide pin 1112. The cooperation between the limiting groove 1221 and the retracting slide pin 1112 can limit the latch 122 within the groove of the locking hook 1018, ensuring that the two support frames 100 will not have relative displacement after being locked together.

[0073] In some embodiments of this application, please refer to Figures 10-12 As shown, a limiting wall 1212 is provided at the opening on one side of the locking groove 1211. When the locking pin assembly 111 is in the first locked position, the locking hook 1018 abuts against the limiting wall 1212. The limiting wall 1212 can limit the position of the locking hook 1018 in the locking groove 1211, thereby limiting the position of the locking hook 1018 groove. After the locking assembly and the latch assembly 120 are locked, the latch 122 abuts against the three groove walls of the locking hook 1018 groove, thereby further restricting the connection of the two support frames 100 in the locked position and ensuring that the two support frames 100 will not shift relative to each other after connection.

[0074] If the upper and lower edges of the grooved side of the locking hook 1018 are ridge lines, and the circumferential direction of the groove opening on the side of the locking groove 1211 opposite to the limiting wall 1212 is also a ridge line, when the locking hook 1018 assembly is locked with the latch assembly 120, if there is a slight installation error between the two support frames 100, the locking hook 1018 will interfere with the groove wall on the periphery of the locking groove 1211. This installation error is unavoidable during the assembly of the support frames 100. To accommodate this error and facilitate the locking hook 1018 entering the locking groove 1211, please refer to some embodiments of this application. Figures 10-12 As shown, the upper and lower edges of the locking hook 1018 facing the fixed step 121 are provided with first guide surfaces 1022, and the circumferential groove of the locking groove 1211 facing away from the limiting wall 1212 is provided with a second guide surface 1222 that matches the first guide surface 1022. Under the action of the first guide surface 1022, the size of the side of the locking hook 1018 entering the locking hook 1018 groove is reduced, making it easier to enter the locking hook 1018 groove. At this time, the first guide surface 1022 and the second guide surface 1222 abut against each other. Since both the first guide surface 1022 and the second guide surface 1222 are inclined surfaces, they will guide the direction of movement of the locking hook 1018, causing the locking hook 1018 to move towards the locking hook 1018 groove, thereby making it easier for the locking hook 1018 to enter the locking hook 1018 groove.

[0075] After locking, to help the operator determine that it has been locked, please refer to the following: Figures 10-12 As shown, in some embodiments of this application, a locking mark 1013 is provided on the side of the retractable sliding pin 1112 facing away from the crossbeam 101. A transparent display hole 1014 matching the locking mark 1013 is provided on the retractable rod hook 1111. When the locking pin assembly 111 is in the first locked position, the display hole 1014 is aligned with the locking mark 1013. At this time, the locking mark 1013 can be observed from the outside of the retractable rod hook 1111 through the display hole 1014, indicating that it is in a locked state. If the locking mark 1013 is not observed through the display hole 1014, it means that it is not locked and needs to be re-operated for locking. The locking mark 1013 can be a colored pattern, such as a circle filled with red. When the display hole 1014 is aligned with the locking mark, the display hole 1014 and the circle filled with red are coaxial.

[0076] Because the locking indicator 1013 is located on the side of the retractable lever hook 1111, after the operating locking pin assembly 111 and the latch assembly 120 are locked, the operator needs to observe the retractable lever hook 1111 from the side to see the observation hole, which is not conducive to the operator determining whether it is locked. Therefore, please refer to Figures 10-12As shown, in some embodiments of this application, a first alignment mark 1023 is provided above the locking hook 1018, and a second alignment mark 1213 is provided on the fixed step 121 above the locking groove 1211. When the locking pin assembly 111 is in the first locked position, the first alignment mark 1023 and the second alignment mark 1213 are aligned.

[0077] When the display screen is in a stored or transported state and does not require the support of the wind resistance bracket 10, the unlocking component 113 can be operated to unlock the two support brackets 100 and rotate them toward the frame 20 to fit against the frame 20, thereby reducing the footprint. To prevent damage to the screen from excessive rotation of the support brackets 100 toward the frame 20, please refer to some embodiments of this application. Figures 1-2 As shown, a limiting rod 21 is provided on the side of the frame 20 away from the screen body. When the support frame 100 is in the retracted state, it abuts against the limiting rod 21 to prevent the support frame 100 from rotating excessively toward the frame 20.

[0078] The support frame 100 with locking rod 105 first rotates to abut against the limiting rod 21, and then the support frame 100 with connecting column 104 rotates to abut against the support frame 100 with locking rod 105. Since there is an angle between the two support frames 100 when the wind resistance frame 10 is unfolded, the angle between the end of the fixed step 121 with latch 122 and the crossbeam 101 is the angle between the two support frames 100 when the wind resistance frame 10 is unfolded. Therefore, when the two support frames 100 of the wind resistance frame 10 are in the retracted state, when the latch 122 abuts against the crossbeam 101 on the other support frame 100, the connecting column 104 will be in a protruding state, causing the wind resistance frame 10 to have a large retracted volume.

[0079] To address the aforementioned issues, please refer to some embodiments of this application. Figures 2-3 , Figure 7 , Figure 9 and Figures 12-13 As shown, the support frame 100 with locking rod 105 has receiving openings 107 on both the top and bottom crossbeams 101 facing away from the screen body. The end of the retractable rod hook 1111 facing away from the locking hook 1018 has a groove 1019 that matches the receiving slot. When the wind resistance frame 10 is in the retracted state, the latch assembly 120 is received in the groove 1019 through the receiving opening 107; specifically, the latch 122 is received in the groove 1019 through the receiving opening 107. This reduces the protruding size of the connecting support column 104, thereby reducing the volume of the wind resistance frame 10 in the retracted state. The end of the retractable rod hook 1111 facing away from the locking hook 1018 can extend beyond the receiving opening 107, providing support for the crossbeam 101 at the receiving opening 107 and preventing a decrease in strength caused by the receiving opening 107 on the crossbeam 101.

[0080] After the latch 122 is housed in the recess 1019, the groove wall of the locking groove 1211 on the side opposite to the crossbeam 101 will collide with the crossbeam 101 when the wind resistance frame is folded and stored. To protect the crossbeam 101 and the groove wall of the locking groove 1211 from damage due to impact, please refer to... Figure 3 , Figure 9 , Figure 13 As shown, in some embodiments of this application, a buffer pad 123 is provided on the crossbeam 101, the buffer pad 123 is located on one side of the receiving port 107, and the latch assembly 120 can abut against the buffer pad 123.

[0081] In some embodiments of this application, please refer to Figure 2 and Figure 14 As shown, the limiting rod 21 and the connecting support column 104 are provided with a first locking member 22 and a second locking member 106 that lock each other. When the wind resistance frame 10 is in the storage state, the first locking member 22 and the second locking member 106 cooperate to lock the wind resistance frame 10 onto the display screen frame 20, so as to prevent the support frame 100 of the wind resistance frame 10 from rotating relative to the frame 20 during storage or transportation.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A linkage locking mechanism, characterized in that, include: A locking pin assembly is slidably configured, and the locking pin assembly has a first position and a second position; The lever is rotatable and one end is connected to the locking pin assembly; The unlocking component is slidably configured, and the other end of the lever is connected to the unlocking component, which has an unlocking position and a locking position. Wherein, the unlocking component is located at the locking position, and the locking pin component is located at the first position; The unlocking component is located at the unlocking position, and the locking pin component is located at the second position.

2. The linkage locking mechanism according to claim 1, characterized in that, The lever and the locking pin assembly are symmetrically arranged on both sides of the unlocking component, and the locking pin assembly and the lever are arranged in a one-to-one correspondence.

3. The linkage locking mechanism according to claim 1, characterized in that, The rotation axis of the lever is located between the locking pin assembly and the unlocking assembly.

4. The linkage locking mechanism according to claim 1, characterized in that, The unlocking component includes: The unlocking component has at least one elongated hole spaced apart on both sides; and A slider, which passes through the elongated hole and can slide within the elongated hole; The upper and lower ends of the unlocking component are provided with linkage grooves, and the end of the lever away from the locking pin assembly abuts against the linkage groove.

5. The linkage locking mechanism according to claim 4, characterized in that, The unlocking component is provided with connecting rods at both the upper and lower ends, and the connecting rods are provided with at least one reinforcing rib in the circumferential direction; The linkage groove is located on the connecting rod.

6. The linkage locking mechanism according to claim 5, characterized in that, The unlocking component has a U-shaped cross-section, and the upper and lower ends of the middle enclosure wall of the unlocking component are provided with connecting rods of the same length as the side enclosure walls.

7. The linkage locking mechanism according to claim 4, characterized in that, The unlocking component also includes: A guide pin, one end of which is connected to the side of the unlocking component, and the other end of which has a stepped structure; A sleeve, wherein the sleeve is fitted around the outer periphery of the stepped structure, and the guide pin is slidable relative to the sleeve; and A first reset component is sleeved on the stepped structure, with one end of the first reset component abutting against the stepped surface of the stepped structure and the other end abutting against the pin sleeve.

8. The linkage locking mechanism according to any one of claims 1 to 7, characterized in that, The locking pin assembly includes: A retractable lever hook, one end of which is provided with a locking hook; The retractable sliding pin is movably disposed within the retractable rod hook; When the locking pin assembly is in the first position, the retractable sliding pin extends into the hook groove of the locking hook; When the locking pin assembly is in the second position, the retracting sliding pin retracts into the retracting rod hook; The end of the retractable sliding pin opposite to the locking hook is provided with an abutment groove. The lever passes through the retractable rod hook and is inserted into the abutment groove, abutting against the groove wall.

9. The linkage locking mechanism according to claim 8, characterized in that, The locking pin assembly also includes: A connector, wherein the retractable sliding pin has a mounting groove, the connector passes through the retractable sliding pin and is located within the mounting groove, and the connector can slide along the mounting groove; and The second reset component is located in the mounting groove, with one end abutting against the connector and the other end abutting against the groove wall of the mounting groove.

10. The linkage locking mechanism according to claim 9, characterized in that, One side of the mounting groove is provided with a receiving groove, and when the locking pin assembly is in the first position, the connector is received in the receiving groove.

11. The linkage locking mechanism according to claim 8, characterized in that, A locking mark is provided on one side of the retractable sliding pin; The hook of the retractable rod is provided with a transparent display hole that matches the locking mark; When the locking pin assembly is in the first position, the display hole is aligned with the locking mark.

12. The linkage locking mechanism according to claim 8, characterized in that, The hook of the retractable lever is provided with a transparent drainage hole, which is aligned with the lever, and the length of the drainage hole is greater than the movable length of the lever end.

13. The linkage locking mechanism according to claim 8, characterized in that, The hook of the retractable rod is provided with a connecting part, and a through groove is provided on one side of the connecting part. The end of the lever passes through the through groove and abuts against the abutting groove.

14. The linkage locking mechanism according to claim 8, characterized in that, The upper and lower ends of the groove wall that abuts against the lever are inclined in opposite directions.

15. The linkage locking mechanism according to claim 8, characterized in that, One end of the retractable sliding pin is provided with a guide slope.

16. The linkage locking mechanism according to claim 8, characterized in that, The upper and lower edges of one side of the locking hook are provided with a first guide surface.

17. The linkage locking mechanism according to claim 8, characterized in that, A first alignment mark is provided above the locking hook.

18. The linkage locking mechanism according to claim 8, characterized in that, One end of the hook of the retractable rod is provided with a groove.

19. The linkage locking mechanism according to claim 8, characterized in that, The lever includes a central portion and abutment portions located at both ends of the central portion, the abutment portions being connected to the locking pin assembly or to the unlocking assembly.

20. The linkage locking mechanism according to claim 19, characterized in that, The two abutting portions are provided with flanges facing away from each other, and the flanges abut against the locking pin assembly or the unlocking assembly.

21. The linkage locking mechanism according to claim 20, characterized in that, The upper and lower ends of the groove wall that abuts against the flange of the lever are inclined in opposite directions.

22. The linkage locking mechanism according to any one of claims 1 to 7, characterized in that, The distance between the first position and the second position is the first distance, the distance between the locked position and the unlocked position is the second distance, and the ratio of the first distance to the second distance is a; The distance between the locking pin assembly and the rotation axis of the lever is a third distance, and the distance between the unlocking assembly and the rotation axis of the lever is a fourth distance. The ratio of the third distance to the fourth distance is b. a = b.

23. A display screen, characterized in that, include: Screen body; A frame, wherein the screen is disposed on the frame; as well as A wind resistance frame is detachably mounted on the side of the frame away from the screen body, and the wind resistance frame is provided with a linkage locking pin mechanism as described in any one of claims 1 to 22.

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