Lock catch mechanism, locking device and display equipment

Abstract

The invention discloses a lock catch mechanism, a locking device and display equipment, the lock catch mechanism comprises a first base, an operation handle and a lock catch assembly, and the first base is provided with a limiting boss; the operating handle is rotationally connected with the first base; the lock catch assembly comprises a first rotating shaft and a lock rod which are connected, the first rotating shaft is rotationally arranged on the operating handle, a positioning wheel rotating synchronously is arranged on the first rotating shaft, the circumferential face of the positioning wheel is used for being attached to the limiting boss, and a receding notch is formed in the circumferential direction of the positioning wheel and used for receding for the limiting boss. It can be understood that if the area, without the receding notch, of the positioning wheel faces the limiting boss, the operation handle is effectively prevented from excessively overturning towards the back side of the LED box body, and it is guaranteed that the operation handle has a large unfolding angle relative to the LED box body. And if the receding notch of the positioning wheel faces the limiting boss, the operation handle can be compactly overturned to the back side of the LED box body, so that it is guaranteed that the overall thickness of the LED box body is small, and then the LED box body is convenient to store and carry.

Description

Technical Field

[0001] The present invention relates to the technical field of display devices, and in particular to a locking mechanism, a locking device and a display device. Background Art

[0002] The display device is usually formed by splicing a plurality of LED boxes, and a locking device is usually provided between adjacent LED boxes to achieve a fastening connection between the two.

[0003] In the related art, the locking device is provided with a rotatable operating handle, and the operating handle is provided with a U-shaped locking rod. When the adjacent LED boxes are fastened together, the U-shaped locking rod is hooked on the lock buckle of the lock seat. If the adjacent LED boxes need to be disassembled, the operating handle is rotated to release the hooking force of the U-shaped locking rod on the lock seat, so that the adjacent LED boxes can be disassembled.

[0004] In order to facilitate the operation of the operating handle, a large expansion angle needs to be maintained between the operating handle and the LED box, so as to facilitate the operation of the operating handle. However, with such a configuration, the overall thickness of the display device is large, and it is inconvenient to install or store. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a locking mechanism, a locking device and a display device, wherein the operating handle is convenient to use and can be turned over to a more compact position for easy storage.

[0006] In a first aspect, an embodiment of the present application provides a locking mechanism, comprising:

[0007] The first base is provided with a limiting boss;

[0008] An operating handle, rotatably connected to the first base;

[0009] The lock assembly includes a first rotating shaft and a locking rod, wherein the first rotating shaft is rotatably arranged on the operating handle, and a synchronously rotating positioning wheel is provided on the first rotating shaft, and the circumferential surface of the positioning wheel is used to fit the limiting boss, and the positioning wheel is provided with a making way notch in its circumferential direction for making way for the limiting boss.

[0010] According to some embodiments of the present invention, when the locking rod is in a hooking state, the circumferential surface of the positioning wheel can fit against the limiting boss; and when the locking rod is flipped to contact the operating handle, the clearance notch is arranged to face the limiting boss.

[0011] According to some embodiments of the present invention, the locking assembly further includes a first elastic member, and the first elastic member is used to drive the locking rod to flip toward the operating handle when the locking rod is in an unlocked state.

[0012] According to some embodiments of the present invention, the lock assembly further includes a stopper rod, which is disposed on a side of the operating handle and is used to limit the lock rod from rotating from a first angle range to a second angle range or from the second angle range to the first angle range; wherein, when the lock rod moves within the first angle range, the circumferential surface of the positioning wheel can be fitted to the limiting boss, and when the lock rod moves within the second angle range, the clearance notch faces the limiting boss;

[0013] The first rotating shaft is axially slidably arranged on the operating handle and the positioning wheel, or the locking rod is slidably arranged on the first rotating shaft, or the blocking rod is elastically and telescopically arranged on the operating handle, so that the locking rod can pass over the blocking rod.

[0014] According to some embodiments of the present invention, if the first rotating shaft is axially slidably disposed on the operating handle and the positioning wheel, the first rotating shaft and the positioning wheel are provided with a limiting groove along their axial direction, and the other is provided with a limiting pin, and the limiting pin is slidably disposed in the limiting groove, so that the locking rod slides within a set range;

[0015] The locking assembly also includes a second elastic member, which is used to reset the locking rod to an initial position when no axial force is applied.

[0016] According to some embodiments of the present invention, the positioning wheel includes two annular portions and a notch ring portion, the notch ring portion is connected between the two annular portions, the clearance gap is formed between the two ends of the notch ring portion in the circumferential direction, and the width of the limiting boss is less than or equal to the width of the clearance gap so that it can be embedded in the clearance gap.

[0017] According to some embodiments of the present invention, the outer diameter of the annular portion is smaller than the outer diameter of the notched ring portion, and a limiting protrusion is provided at one end of the notched ring portion in the circumferential direction; wherein, along the radial direction of the positioning wheel, an escape opening is formed between the outer side of the annular portion and the inner side of the limiting protrusion;

[0018] The first elastic member is a torsion spring, and the first elastic member includes two spiral parts and a connecting arm connected between the two spiral parts, the connecting arm is clamped on the inner side of the limiting protrusion and extends from the two avoidance openings, and the two spiral parts are respectively sleeved on the annular part;

[0019] The limiting boss is provided with an avoidance groove for making way for the limiting protrusion.

[0020] According to some embodiments of the present invention, the locking mechanism further comprises a ratchet assembly, and the ratchet assembly comprises:

[0021] A ratchet, wherein the first base is fixedly provided with a second rotating shaft, the ratchet is sleeved and fixed on the second rotating shaft, and the ratchet is provided with a first ratchet tooth portion in a circumferential direction;

[0022] A pressing member is rotatably disposed on the operating handle, the pressing member is provided with a second ratchet portion that matches the first ratchet portion, and the pressing member can be pressed to separate the second ratchet portion from the second ratchet portion; wherein, when the first ratchet portion matches the second ratchet portion, the pressing member is used to limit the rotation of the operating handle toward the unlocking direction;

[0023] The third elastic member is used to make the first ratchet portion cooperate with the second ratchet portion when the pressing member is not subjected to the pressing force.

[0024] In a second aspect, an embodiment of the present application provides a locking device, comprising:

[0025] The locking mechanism described above;

[0026] The locking mechanism comprises:

[0027] The second base is provided with two spaced apart mounting side plates, and an arc-shaped guide channel is formed between the two mounting side plates;

[0028] An arc-shaped lock seat is slidably arranged in the guide channel, the arc-shaped lock seat is provided with an arc-shaped scale panel, the scale panel is provided with a lock buckle for the lock rod to hook, and is provided with an arc-shaped slide groove penetrating its scale surface along its sliding direction, and the arc-shaped lock seat is provided with a first positioning tooth portion and a positioning groove in sequence along its sliding direction, and the first positioning tooth portion and the positioning groove are located on the surface of the scale panel facing away from the scale surface;

[0029] The positioning assembly includes a positioning screw, a first positioning member, an operating handle and a second positioning member, wherein the first positioning member is slidably arranged on the inner side of the second base and is provided with a second positioning tooth portion that cooperates with the first positioning tooth portion, the positioning screw is rotatably arranged on the second base and is sequentially passed through the first positioning member and the arc-shaped slide groove, the positioning screw is threadedly connected to the first positioning member, the operating handle is arranged at the outer end portion of the positioning screw located on the scale panel, the operating handle can be operated to control the rotation of the positioning screw so that the first positioning tooth portion is engaged with or separated from the second positioning tooth portion, and the second positioning member can be elastically and telescopically arranged on the second base to be used to resist the positioning groove.

[0030] In a third aspect, an embodiment of the present application provides a display device, including:

[0031] Spliced ​​LED cabinets;

[0032] In the above locking device, the locking mechanism is connected to the edge of one LED box, the locking seat mechanism is connected to the edge of another LED box, and the locking rod is used to be hooked in the locking catch of the arc-shaped locking seat.

[0033] It can be seen from the above technical scheme that the embodiment of the present application has the following advantages: during the rotation of the lock rod, the lock rod drives the first rotating shaft to rotate synchronously, and the first rotating shaft drives the positioning wheel to rotate synchronously. When the lock rod rotates within an angle range, the area of ​​the positioning wheel without the clearance notch faces the limiting boss; when the lock rod rotates within another angle range, the clearance notch of the positioning wheel faces the limiting boss. Among them, if the area of ​​the positioning wheel without the clearance notch faces the limiting boss, the limiting boss and the circumferential surface of the positioning wheel can fit together, so that the operating handle can be effectively restricted from excessively flipping toward the back side of the LED box, thereby ensuring that the operating handle has a larger unfolding angle relative to the LED box, so that the staff can conveniently hold the operating handle to control the rotation of the operating handle. If the clearance notch of the positioning wheel faces the limiting boss, the limiting boss does not interfere with the flipping of the operating handle toward the LED box, or the interference with the flipping of the operating handle toward the LED box is small. With this arrangement, the operating handle can be compactly flipped to the back side of the LED box, thereby ensuring that the overall thickness of the LED box is small, thereby facilitating the storage and transportation of the LED box. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the locking mechanism of an embodiment of the present invention;

[0035] Figure 2 It is a structural schematic diagram of the locking mechanism of an embodiment of the present invention applied to an LED box;

[0036] Figure 3 It is a schematic diagram of the exploded structure of the locking mechanism of an embodiment of the present invention;

[0037] Figure 4 It is a structural schematic diagram of a positioning wheel according to an embodiment of the present invention;

[0038] Figure 5 A schematic structural diagram of a first base and a positioning wheel according to an embodiment of the present invention;

[0039] Figure 6 Another structural schematic diagram of the first base and the positioning wheel according to an embodiment of the present invention;

[0040] Figure 7 It is a partial exploded schematic diagram of the structure of the locking mechanism according to an embodiment of the present invention;

[0041] Figure 8 is a schematic cross-sectional view of a locking mechanism according to an embodiment of the present invention;

[0042] Fig. 9 A schematic diagram of the structure of a locking mechanism and a locking seat mechanism according to an embodiment of the present invention;

[0043] Fig.10 A schematic structural diagram of a lock seat mechanism according to an embodiment of the present invention;

[0044] Fig.11 It is a schematic diagram of the exploded structure of the lock seat mechanism according to an embodiment of the present invention;

[0045] Fig.12 Schematic diagram of the structure of a display device according to an embodiment of the present invention.

[0046] The meanings of the reference numerals are as follows:

[0047] 100, locking mechanism; 110, first base; 111, limiting boss; 112, avoidance groove; 113, second rotating shaft; 114, second lug; 120, operating handle; 121, first lug; 122, slot; 130, locking assembly; 131, first rotating shaft; 1311, limiting groove; 1312, step surface; 132, locking rod; 133, positioning wheel; 1331, annular portion; 1332, notched annular portion; 1333, giving way notch; 1334, avoidance opening; 1335, limiting boss; 134, first elastic member; 1341, spiral portion; 1342, connecting arm; 135, limiting pin; 136, second elastic member; 140, stop Rod; 150, ratchet assembly; 151, ratchet; 1511, first ratchet portion; 152, pressing member; 1521, second ratchet portion; 153, third elastic member; 200, lock seat mechanism; 210, second base; 211, mounting side plate; 2111, guide groove; 212, guide channel; 220, arc-shaped lock seat; 221, scale panel; 2211, first positioning tooth portion; 2212, lock buckle; 2213, arc-shaped slide groove; 230, positioning assembly; 231, positioning screw; 232, first positioning member; 2321, second positioning tooth portion; 2322, guide protrusion; 233, operating handle; 234, second positioning member; 300, LED box. DETAILED DESCRIPTION

[0048] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0049] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, upper, lower, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0050] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0051] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0052] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0053] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0054] See also Figure 1 to Figure 2 , is a locking mechanism 100 provided in an embodiment of the present invention. For the convenience of description, the locking mechanism 100 is applied to an LED box 300 as an example to illustrate the solution. Of course, the present application does not limit the locking mechanism 100 to only be applied to the splicing of the LED box 300.

[0055] Specifically, refer to Figure 1 and Figure 3The locking mechanism 100 includes a first base 110, an operating handle 120 and a locking assembly 130, wherein the first base 110 is provided with a limiting boss 111, and the operating handle 120 is rotatably connected to the first base 110. The locking assembly 130 includes a first rotating shaft 131 and a locking rod 132 that are connected to each other, wherein the first rotating shaft 131 is rotatably disposed on the operating handle 120, and the locking rod 132 is roughly U-shaped, and both ends of the locking rod 132 are connected to both ends of the first rotating shaft 131. A synchronously rotating positioning wheel 133 is fixedly disposed on the first rotating shaft 131, and the circumferential surface of the positioning wheel 133 is used to fit the limiting boss 111; and the positioning wheel 133 is provided with a yielding notch 1333 in its circumferential direction for yielding space for the limiting boss 111 (refer to Figure 4 ).

[0056] The positioning wheel 133 and the first rotating shaft 131 are integrally formed components, or the positioning wheel 133 and the first rotating shaft 131 are assembled component assemblies.

[0057] In a specific application, during the rotation of the locking rod 132, the locking rod 132 drives the first rotating shaft 131 to rotate synchronously, and the first rotating shaft 131 drives the positioning wheel 133 to rotate synchronously. When the locking rod 132 rotates within an angle range, the area of ​​the positioning wheel 133 without the clearance notch 1333 faces the limiting boss 111 (refer to Figure 5 When the locking rod 132 rotates within another angle range, the positioning wheel 133 of the clearance notch 1333 faces the limiting boss 111 (reference Figure 6 ). If the area of ​​the positioning wheel 133 without the clearance notch 1333 faces the limiting boss 111, the limiting boss 111 and the circumferential surface of the positioning wheel 133 can fit each other, so that the operating handle 120 can be effectively restricted from excessively flipping toward the back side of the LED box 300, thereby ensuring that the operating handle 120 has a larger unfolding angle relative to the LED box 300, so that the staff can conveniently hold the operating handle 120 to control the rotation of the operating handle 120. If the clearance notch 1333 of the positioning wheel 133 faces the limiting boss 111, the limiting boss 111 does not interfere with the flipping of the operating handle 120 toward the LED box 300, or the interference with the flipping of the operating handle 120 toward the LED box 300 is small. With this arrangement, the operating handle 120 can be compactly flipped to the back side of the LED box 300, thereby ensuring that the overall thickness of the LED box 300 is small, thereby facilitating the storage and transportation of the LED box 300.

[0058] In one embodiment, referring to Figure 1 , Figure 2 , Figure 5 and Figure 6When the locking rod 132 is in a hooked state with the lock buckle 2212, the area of ​​the positioning wheel 133 without the clearance notch 1333 faces the limiting boss 111, and the circumferential surface of the positioning wheel 133 can fit against the limiting boss 111; and when the locking rod 132 is flipped to contact the operating handle 120, the clearance notch 1333 is arranged to face the limiting boss 111.

[0059] With such a configuration, when the locking rod 132 is within the angle range close to the lock buckle 2212, the area of ​​the positioning wheel 133 without the clearance notch 1333 faces the limiting boss 111, and at this time, the locking rod 132 is usually in an applied state. Therefore, the limiting boss 111 can enable the operating handle 120 to have a larger unfolding angle relative to the back side of the LED box 300 when in the applied state through the positioning wheel 133, so that it is convenient for the staff to hold the operating handle 120 to control the rotation of the operating handle 120. On the contrary, when the locking rod 132 is within the angle range close to the operating handle 120, the clearance notch 1333 of the positioning wheel 133 faces the limiting boss 111, and at this time, the locking rod 132 is usually in an unused state. Therefore, when the operating handle 120 is not in use, the limiting boss 111 does not interfere with or slightly interferes with the positioning wheel 133, so that the operating handle 120 can be compactly flipped to the surface close to the LED box 300, thereby ensuring that the overall thickness of the LED box 300 is small and the LED box 300 can be easily stored and carried.

[0060] In other possible implementations, when the locking rod 132 is within an angle range close to the lock buckle 2212, the clearance notch 1333 of the positioning wheel 133 faces the limiting boss 111. Therefore, when the locking rod 132 is in use, the operating handle 120 can be compactly flipped to the back side of the LED box 300, thereby ensuring that the overall thickness of the LED box 300 is small and facilitating the installation of the LED box 300. Conversely, when the locking rod 132 is within an angle range close to the operating handle 120, the area of ​​the positioning wheel 133 without the clearance notch 1333 faces the limiting boss 111. Therefore, when the locking rod 132 is not in use, the operating handle 120 has a large expansion angle relative to the back side of the LED box 300, thereby facilitating the staff to hold the operating handle 120 for subsequent use of the locking mechanism 100.

[0061] In some embodiments, reference Figure 3The lock assembly 130 further includes a first elastic member 134. When the lock rod 132 is in an unlocked state with the lock buckle 2212, the first elastic member 134 is used to drive the lock rod 132 to flip toward the direction of the operating handle 120. Specifically, if the LED box 300 needs to be disassembled, the staff can hold the operating handle 120 and rotate it. The operating handle 120 switches the lock rod 132 from the locked state to the unlocked state by rotating. After the lock rod 132 switches to the unlocked state, the lock rod 132 rotates toward the direction of the operating handle 120 under the action of the first elastic member 134, thereby realizing the separation of the lock rod 132 and the lock buckle 2212. The staff does not need to manually separate the lock rod 132 from the lock buckle 2212, which reduces the staff's work intensity.

[0062] It is understandable that if the locking rod 132 is within the angle range close to the operating handle 120, the clearance notch 1333 of the positioning wheel 133 faces the limiting boss 111. Therefore, by setting the first elastic member 134, the first elastic member 134 makes the clearance notch 1333 of the positioning wheel 133 face the limiting boss 111, so that the staff can make the operating handle 120 compactly flip to the back side of the LED box 300, thereby facilitating the storage of the LED box 300.

[0063] In some embodiments, reference Figure 1 and Figure 3 The locking mechanism 100 further includes a blocking rod 140. The blocking rod 140 is disposed on the side of the operating handle 120 near the end of the first base 110. When the locking rod 132 moves to the position of the blocking rod 140, the blocking rod 140 effectively restricts the locking rod 132 from continuing to rotate forward. More specifically, the blocking rod 140 effectively restricts the locking rod 132 from rotating from the first angle range to the second angle range, or from rotating from the second angle range to the first angle range. Among them, when the locking rod 132 moves to the position of the blocking rod 140, the positioning wheel 133 just rotates to the adjacent point of the two states. When the locking rod 132 is within the first angle range, the area of ​​the positioning wheel 133 without the clearance notch 1333 is arranged facing the limiting boss 111, that is, the circumferential surface of the positioning wheel 133 can be fitted to the limiting boss 111, thereby, the operating handle 120 has a larger expansion angle relative to the LED box 300, so as to facilitate operation; the locking rod 132 rotates from the first angle range to the second angle range, and the clearance notch 1333 of the positioning wheel 133 is just arranged facing the limiting boss 111, thereby, the operating handle 120 can be compactly flipped to the back side of the LED box 300, so as to facilitate the storage of the LED box 300.

[0064] It can be understood that, through the setting of the blocking rod 140, the blocking rod 140 limits the rotation of the operating handle 120, thereby keeping the positioning wheel 133 in a certain state. For example, the blocking rod 140 keeps the area of ​​the positioning wheel 133 without the yield notch 1333 facing the limiting boss 111, so that the operating handle 120 has a larger unfolding angle relative to the LED box 300, thereby facilitating the staff to control the rotation of the operating handle 120.

[0065] In order to allow the locking rod 132 to pass over the blocking rod 140, in a possible embodiment, Figure 3 , the first rotating shaft 131 is axially slidably arranged on the operating handle 120 and the positioning wheel 133, so that the locking rod 132 can pass over the blocking rod 140. Specifically, two first lugs 121 are arranged on the side of the operating handle 120 close to the LED box 300, and the positioning wheel 133 is arranged between the two first lugs 121. The first rotating shaft 131 is sequentially passed through the two lugs 121 and the positioning wheel 133, and can slide axially, and the first rotating shaft 131 is rotatably connected with the first lug 121; at the same time, the locking assembly 130 also includes a second elastic member 136, and the second elastic member 136 can be a spring. The second elastic member 136 is sleeved on the first rotating shaft 131, one end of which is against the step surface 1312 on the side of the first rotating shaft 131, and the other end is against the inner side of the first lug 121. When the locking rod 132 is not subjected to an axial force, the second elastic member 136 is used to reset the first rotating shaft 131 and the locking rod 132 to the initial position.

[0066] Specifically, when the lock rod 132 needs to rotate from the first angle range to the second angle range, or from the second angle range to the first angle range, the staff manipulates the lock rod 132 to rotate and pushes the lock rod 132 to slide axially along with the first rotating shaft 131, and the distance between the side arm of the lock rod 132 close to the blocking rod 140 and the operating handle 120 gradually increases, and the second elastic member 136 is gradually compressed. When the above-mentioned distance is greater than the length of the blocking rod 140 extending, the lock rod 132 can pass over the blocking rod 140 by rotating. After the lock rod 132 passes over the blocking rod 140, the first rotating shaft 131 returns to the initial position under the action of the second elastic member 136, and accordingly, the lock rod 132 returns to the initial position synchronously along with the first rotating shaft 131, and the blocking rod 140 can effectively limit the rotation of the lock rod 132 again.

[0067] In order to allow the locking rod 132 to pass over the blocking rod 140, in another possible embodiment, refer to Figure 3, the lock rod 132 is slidably disposed on the first rotating shaft 131 so that the lock rod 132 can pass over the blocking rod 140. Specifically, after the two ends of the first rotating shaft 131 pass through the two first lugs 121, the two ends of the first rotating shaft 131 are exposed to a sufficient length, and the two ends of the lock rod 132 are axially slidably disposed on the two ends of the first rotating shaft 131. The lock assembly 130 also includes a second elastic member 136, which can be a spring. The second elastic member 136 is sleeved on the first rotating shaft 131, one end of which is against the side arm of the lock rod 132, and the other end is against the outer side of the first lug 121. When the lock rod 132 is not subjected to an axial force, the second elastic member 136 is used to axially reset the lock rod 132 to an initial position.

[0068] Specifically, when the staff manipulates the lock rod 132 to rotate, and pushes the two ends of the lock rod 132 to slide along the axial direction of the first rotating shaft 131, the distance between the side arm of the lock rod 132 close to the blocking rod 140 and the operating handle 120 gradually increases, and the second elastic member 136 is gradually compressed. When the above-mentioned distance is greater than the length of the blocking rod 140, the lock rod 132 can pass over the blocking rod 140 by rotating. After passing over the blocking rod 140, the lock rod 132 returns to the initial position under the action of the second elastic member 136, and the blocking rod 140 can effectively limit the rotation of the lock rod 132 again.

[0069] In order to allow the locking rod 132 to pass over the blocking rod 140, in other possible embodiments, the blocking rod 140 can be elastically telescopically arranged on the operating handle 120, so that the locking rod 132 can pass over the blocking rod 140. For example, the inner end of the blocking rod 140 is slidably arranged on the side of the operating handle 120 through a spring. In specific applications, when the side arm of the locking rod 132 moves to the position of the blocking rod 140, the end of the blocking rod 140 is pressed to elastically contract toward the direction of the operating handle 120 until the blocking rod 140 does not interfere with the side arm of the locking rod 132, so that the locking rod 132 can pass over the blocking rod 140. After the locking rod 132 passes over the blocking rod 140, the blocking rod 140 returns to the extended position, so that the rotation of the locking rod 132 can be effectively restricted again.

[0070] In order to make the first rotating shaft 131 slide within the set range, in a further specific embodiment, referring to Figure 7 and Figure 8, one of the first rotating shaft 131 and the positioning wheel 133 is provided with a limiting groove 1311 along its axial direction, and the other is provided with a limiting pin 135, and the limiting pin 135 is slidably arranged in the limiting groove 1311, so that the locking rod 132 slides within a set range. For example, the side wall of the positioning wheel 133 is provided with a plug hole that passes through the inside and outside thereof, and the side wall of the first rotating shaft 131 is provided with a limiting groove 1311 along the axial direction, and the plug hole and the limiting groove 1311 are arranged correspondingly. One end of the plug pin is inserted and fixed in the plug hole, and the other end is slidably embedded in the limiting groove 1311. In this way, when the first rotating shaft 131 slides axially, the limiting groove 1311 causes the limiting pin 135 to slide within the length range of the limiting groove 1311, so that the first rotating shaft 131 moves within the set range, and then the locking rod 132 slides axially within a controllable range, and the staff can easily slide the locking rod 132 to a suitable position to pass over the blocking rod 140.

[0071] It can be understood that a limit pin 135 is set between the first rotating shaft 131 and the positioning wheel 133, and the positioning wheel 133 and the first rotating shaft 131 are set to limit the circumference. With this arrangement, when the locking rod 132 drives the first rotating shaft 131 to rotate circumferentially, the first rotating shaft 131 drives the positioning wheel 133 to rotate through the limit pin 135, so that the clearance notch 1333 of the positioning wheel 133 can face the limit boss 111, and then the operating handle 120 can be compactly flipped to the back side of the LED box 300.

[0072] In some embodiments, reference Figure 3 and Figure 4 The positioning wheel 133 includes two annular parts 1331 and a notch ring part 1332 sleeved on the outside of the first rotating shaft 131, wherein the notch ring part 1332 is roughly semi-annular and connected between the two annular parts 1331, and the clearance notch 1333 is formed between the two ends of the notch ring part 1332 in the circumferential direction, or in other words, the clearance notch 1333 is roughly semi-annular. The width of the limiting boss 111 is less than or equal to the width of the clearance notch 1333, and the limiting boss 111 can be embedded in the clearance notch 1333, more specifically, the limiting boss 111 can be embedded between the two annular parts 1331. With such a configuration, the overall structure of the positioning wheel 133 is relatively simple, the limiting boss and the positioning wheel 133 can be effectively positioned, and the limiting boss 111 can effectively ensure the stability of the operating handle 120.

[0073] Furthermore, the outer diameter of the annular portion 1331 is smaller than the outer diameter of the notched annular portion 1332, and a limiting protrusion 1335 is provided at one end of the notched annular portion 1332 in the circumferential direction. In the radial direction of the positioning wheel 133, an escape opening 1334 is formed between the outer side of the annular portion 1331 and the inner side of the limiting protrusion 1335; meanwhile, the first elastic member 134 is a torsion spring, and the first elastic member 134 includes two spiral portions 1341 and a connecting arm 1342 connected between the two spiral portions 1341, the connecting arm 1342 is laterally clamped on the inner side of the limiting protrusion 1335, and extends from the two escape openings 1334, and the two spiral portions 1341 are respectively sleeved on the annular portion 1331. Two clamping grooves 122 are provided on the edges of the two first lugs 121, and the two end arms of the first elastic member 134 are clamped in the clamping grooves 122. As can be seen from the above, the positioning wheel 133 adopts the above-mentioned structural form, and the first elastic member 134 can be conveniently assembled on the positioning wheel 133 to provide elastic force for restoring the locking rod 132 .

[0074] Furthermore, refer to Figure 5 The side of the limiting boss 111 close to the positioning wheel 133 is provided with an avoidance groove 112. When the give way notch 1333 faces the limiting boss 111, the avoidance groove 112 is used to limit the limiting protrusion 1335. It can be seen that by setting the avoidance groove 112, the limiting protrusion 1335 can be embedded in the give way groove, so that the positioning wheel 133 can be compactly close to the limiting boss 111, especially the limiting boss 111 can be compactly attached to the side wall of the first rotating shaft 131, so that the operating handle 120 can be compactly flipped to the back of the LED box 300.

[0075] In some embodiments, reference Figure 3The lock mechanism 100 further includes a ratchet assembly 150, which is used to limit the rotation of the operating handle 120 toward the lock 2212. Specifically, the ratchet assembly 150 includes a ratchet 151, a pressing member 152 and a third elastic member 153, wherein the first base 110 is provided with a second lug 114, the second lug 114 is fixedly provided with a second rotating shaft 113, the ratchet 151 is sleeved and fixed on the second rotating shaft 113, and the ratchet 151 is provided with a first ratchet portion 1511 in the circumferential direction. The pressing member 152 is rotatably arranged at one end of the operating handle 120 close to the first base 110. The pressing member 152 is provided with a second ratchet portion 1521 matched with the first ratchet portion 1511. The pressing member 152 can be pressed to separate the second ratchet portion 1521 from the second ratchet portion 1521; wherein, when the first ratchet portion 1511 matches with the second ratchet portion 1521, the ratchet assembly 150 is used to limit the rotation of the operating handle 120 in the unlocking direction, that is, to limit the rotation of the operating handle 120 in the direction of the lock buckle 2212; when the pressing member 152 is not subjected to pressing force, the third elastic member 153 is used to make the first ratchet portion 1511 match with the second ratchet portion 1521.

[0076] In specific applications, when the lock rod 132 is hooked on the lock buckle 2212, the second ratchet portion 1521 is engaged with the first ratchet portion 1511 of the ratchet wheel 151 under the action of the third elastic member 153, thereby effectively limiting the rotation of the operating handle 120 in the direction of the lock buckle 2212, and then the lock rod 132 can be firmly hooked on the lock buckle 2212, thereby, the lock mechanism 100 firmly connects the adjacent LED boxes 300; when the LED boxes 300 need to be separated, the staff controls the pressing member 152 to rotate, and the second ratchet portion 1521 moves away from the first ratchet portion 1511 and separates from the first ratchet portion 1511. At this time, the staff can control the operating handle 120 to rotate in the direction of the lock buckle 2212, thereby releasing the hooking force between the lock rod 132 and the lock buckle 2212.

[0077] The present application also discloses a locking device, referring to Figures 9 to 11 , including the above-mentioned locking mechanism 100 and the locking seat mechanism 200, wherein the locking seat mechanism 200 includes a second base 210, an arc-shaped locking seat 220 and a positioning assembly 230.

[0078] The second base 210 is provided with two spaced mounting side plates 211, and an arc-shaped guide channel 212 is formed between the two mounting side plates 211. The arc-shaped lock seat 220 is slidably arranged in the guide channel 212, and the arc-shaped lock seat 220 is provided with an arc-shaped scale panel 221, and the scale panel 221 is provided with an arc-shaped slide groove 2213 penetrating its scale surface along its sliding direction, and the scale surface of the scale panel 221 is provided with a lock buckle 2212 for the lock rod 132 to hook. The arc-shaped lock seat 220 is provided with a first positioning tooth portion 2211 and a positioning groove in sequence along its sliding direction, specifically, the first positioning tooth portion 2211 is located on the surface of the scale panel 221 facing away from the scale surface, that is, the first positioning tooth portion 2211 and the positioning groove can be arranged on the inner side of the scale panel 221 and distributed on both sides of the slide groove, so as to avoid the first positioning tooth portion 2211 being exposed to the outer side of the scale panel 221 and being easily damaged by collision.

[0079] The positioning assembly 230 includes a positioning screw 231, a first positioning member 232, an operating handle 233 and a second positioning member 234, wherein the first positioning member 232 is slidably disposed on the inner side of the second base 210 to move away from or close to the scale panel 221. Specifically, the two mounting side plates 211 are provided with guide grooves 2111, and guide protrusions 2322 are provided on both sides of the first positioning member 232. The guide protrusions 2322 are slidably embedded in the guide grooves 2111, thereby, the first positioning member 232 is slidably disposed on the inner side of the second base 210. A second positioning tooth portion 2321 that matches the first positioning tooth portion 2211 is provided on one side of the first positioning member 232 close to the scale panel 221. The inner end portion of the positioning screw 231 is rotatably disposed on the second base 210, and the outer end portion of the positioning screw 231 is sequentially penetrated through the first positioning member 232 and the arc-shaped slide groove 2213, and exposed outside the positioning slide groove. The positioning screw 231 is threadedly connected to the first positioning member 232. The operating handle 233 is disposed at the outer end of the positioning screw 231 facing away from the scale panel 221. The operating handle 233 can be operated to control the rotation of the positioning screw 231 so that the first positioning tooth portion 2211 is engaged with or separated from the second positioning tooth portion 2321. The second positioning member 234 is generally ball-shaped and is elastically and telescopically disposed on the second base 210. The second positioning member 234 is used to abut against the positioning groove.

[0080] In specific applications, in order to adapt to the hooking of the lock buckle 2212, the staff drives the positioning screw 231 to rotate through the operating handle 233, and the positioning screw 231 drives the first positioning member 232 to move away from the scale panel 221, and the first positioning tooth portion 2211 is separated from the second positioning tooth portion 2321, thereby releasing the restriction of the first positioning member 232 on the arc lock seat 220. At this time, the staff can adjust the position of the arc lock seat 220 along the guide channel 212, thereby adjusting the position of the lock buckle 2212. Among them, during the adjustment process of the arc lock seat 220, the second positioning member 234 can automatically elastically shrink, so that the arc lock seat 220 can be adjusted normally. After the adjustment of the arc lock seat 220 is completed, the second positioning member 234 is automatically embedded in the positioning groove, so that the arc lock seat 220 can be kept in the adjusted position. Therefore, after the adjustment of the arc lock seat 220 is completed, since the second positioning member 234 can keep the arc lock seat 220 in the adjusted position, the staff can easily drive the positioning screw 231 to rotate through the operating handle 233, and the positioning screw 231 drives the first positioning member 232 to slide toward the scale panel 221, so that the first positioning tooth portion 2211 and the second positioning tooth portion 2321 are locked again, so that the arc lock seat 220 is firmly maintained in the adjusted position.

[0081] It should be noted that the positioning assembly 230 adopts the above-mentioned arrangement, that is, the operating handle 233 is arranged on the outside of the scale surface of the scale panel 221. With this arrangement, the staff can easily drive the positioning screw 231 to rotate through the operating handle 233 to control the locking or unlocking of the arc lock seat 220.

[0082] The present application also discloses a display device, referring to Figure 1 , Figure 3 and Fig.12 , including at least two LED boxes 300 spliced ​​together and the above-mentioned locking device, the locking mechanism 100 is connected to the edge of one LED box 300, the lock seat mechanism 200 is connected to the edge of the other LED box 300, and the locking rod 132 is used to hook into the lock 2212 of the arc-shaped lock seat 220.

[0083] It is understandable that the display device adopts the above locking device. In specific applications, when the locking rod 132 rotates, the locking rod 132 drives the first rotating shaft 131 to rotate synchronously, and the first rotating shaft 131 drives the positioning wheel 133 to rotate synchronously. When the locking rod 132 rotates within a certain angle range, the area of ​​the positioning wheel 133 without the clearance notch 1333 faces the limiting boss 111; when the locking rod 132 rotates within another angle range, the clearance notch 1333 of the positioning wheel 133 faces the limiting boss 111. Among them, if the area of ​​the positioning wheel 133 without the clearance notch 1333 faces the limiting boss 111, the limiting boss 111 and the circumferential surface of the positioning wheel 133 can fit together, so that the operating handle 120 can be effectively restricted from excessively flipping toward the back side of the LED box 300, thereby ensuring that the operating handle 120 has a larger unfolding angle relative to the LED box 300, so that the staff can conveniently hold the operating handle 120 to control the rotation of the operating handle 120, thereby facilitating the installation or disassembly of the display device. If the clearance notch 1333 of the positioning wheel 133 faces the limiting boss 111, the limiting boss 111 does not interfere with the flipping of the operating handle 120 toward the LED box 300, or the interference with the flipping of the operating handle 120 toward the LED box 300 is small. In this way, the operating handle 120 can be compactly flipped to the back side of the LED box 300, thereby ensuring that the overall thickness of the display device is small, thereby facilitating the storage and transportation of the display device.

[0084] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A locking mechanism, characterized in that: include: The first base is provided with a limiting boss; An operating handle, rotatably connected to the first base; The lock assembly includes a first rotating shaft and a locking rod connected to each other, wherein the first rotating shaft is rotatably arranged on the operating handle, and a synchronously rotating positioning wheel is provided on the first rotating shaft, and the circumferential surface of the positioning wheel is used to fit the limiting boss, and the positioning wheel is provided with a making way notch in its circumferential direction for making way for the limiting boss.

2. The locking mechanism according to claim 1, characterized in that: When the locking rod is in a hooking state, the circumferential surface of the positioning wheel can be fitted to the limiting boss; and when the locking rod is flipped to abut against the operating handle, the clearance notch is arranged to face the limiting boss.

3. The locking mechanism according to any one of claims 1 to 2, characterized in that: The lock assembly further comprises a first elastic member, and the first elastic member is used for driving the lock rod to flip toward the operating handle when the lock rod is in an unlocked state.

4. The locking mechanism according to any one of claims 1 to 3, characterized in that: The locking mechanism further includes a blocking rod, which is arranged on the side of the operating handle and is used to limit the locking rod from rotating from the first angle range to the second angle range or from the second angle range to the first angle range; wherein, when the locking rod moves within the first angle range, the circumferential surface of the positioning wheel can be attached to the limiting boss, and when the locking rod moves within the second angle range, the clearance notch faces the limiting boss; The first rotating shaft is axially slidably disposed on the operating handle and the positioning wheel, or the locking rod is slidably disposed on the first rotating shaft, or the blocking rod is elastically and telescopically disposed on the operating handle so that the locking rod can pass over the blocking rod.

5. The locking mechanism according to claim 4, characterized in that: If the first rotating shaft is axially slidably disposed on the operating handle and the positioning wheel, one of the first rotating shaft and the positioning wheel is provided with a limiting groove along its axial direction, and the other is provided with a limiting pin, and the limiting pin is slidably disposed in the limiting groove, so that the locking rod slides within a set range; The locking assembly also includes a second elastic member, which is used to reset the locking rod to an initial position when no axial force is applied.

6. The locking mechanism according to claim 3, characterized in that: The positioning wheel includes two annular parts and a notch ring part, the notch ring part is connected between the two annular parts, the clearance gap is formed between the two ends of the notch ring part in the circumferential direction, and the width of the limiting boss is less than or equal to the width of the clearance gap so that it can be embedded in the clearance gap.

7. The locking mechanism according to claim 6, characterized in that: The outer diameter of the annular portion is smaller than the outer diameter of the notched ring portion, and a limiting protrusion is provided at one end of the notched ring portion in the circumferential direction; wherein, along the radial direction of the positioning wheel, an escape opening is formed between the outer side of the annular portion and the inner side of the limiting protrusion; The first elastic member is a torsion spring, and the first elastic member includes two spiral parts and a connecting arm connected between the two spiral parts, the connecting arm is clamped on the inner side of the limiting protrusion and extends from the two avoidance openings, and the two spiral parts are respectively sleeved on the annular part; The limiting boss is provided with an avoidance groove for making way for the limiting protrusion.

8. The locking mechanism according to any one of claims 1 to 7, characterized in that: The locking mechanism further includes a ratchet assembly, which includes: A ratchet, wherein the first base is fixedly provided with a second rotating shaft, the ratchet is sleeved and fixed on the second rotating shaft, and the ratchet is provided with a first ratchet tooth portion in a circumferential direction; A pressing member is rotatably disposed on the operating handle, the pressing member is provided with a second ratchet portion that matches the first ratchet portion, and the pressing member can be pressed to separate the second ratchet portion from the second ratchet portion; wherein, when the first ratchet portion matches the second ratchet portion, the pressing member is used to limit the rotation of the operating handle toward the unlocking direction; The third elastic member is used to make the first ratchet portion cooperate with the second ratchet portion when the pressing member is not subjected to the pressing force.

9. A locking device, characterized in that: include: The locking mechanism according to any one of claims 1 to 8; The locking mechanism comprises: The second base is provided with two spaced apart mounting side plates, and an arc-shaped guide channel is formed between the two mounting side plates; An arc-shaped lock seat is slidably arranged in the guide channel, the arc-shaped lock seat is provided with an arc-shaped scale panel, the scale panel is provided with a lock buckle for the lock rod to hook, and is provided with an arc-shaped slide groove penetrating its scale surface along its sliding direction, and the arc-shaped lock seat is provided with a first positioning tooth portion and a positioning groove in sequence along its sliding direction, and the first positioning tooth portion and the positioning groove are located on the surface of the scale panel facing away from the scale surface; The positioning assembly includes a positioning screw, a first positioning member, an operating handle and a second positioning member, wherein the first positioning member is slidably arranged on the inner side of the second base and is provided with a second positioning tooth portion that cooperates with the first positioning tooth portion, the positioning screw is rotatably arranged on the second base and is sequentially passed through the first positioning member and the arc-shaped slide groove, the positioning screw is threadedly connected to the first positioning member, the operating handle is arranged at the outer end of the positioning screw facing away from the scale panel, the operating handle can be operated to control the rotation of the positioning screw so that the first positioning tooth portion is engaged with or separated from the second positioning tooth portion, and the second positioning member can be elastically and telescopically arranged on the second base to be used to resist the positioning groove.

10. A display device, characterized in that: include: At least two LED cabinets spliced ​​together; In the locking device of claim 9, the locking mechanism is connected to the edge of one of the LED boxes, the locking seat mechanism is connected to the edge of another of the LED boxes, and the locking rod is used to hook into the locking catch of the arc-shaped locking seat.

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