Latching mechanism, locking device, and display apparatus

Abstract

Disclosed are a latching mechanism, a locking device, and a display apparatus. The latching mechanism comprises a first base, an operating handle and a latching assembly, wherein the first base is provided with a limiting boss; the operating handle is rotationally connected to the first base; and the latching assembly comprises a first rotary shaft and a locking rod which are connected to each other. The first rotary shaft is rotationally arranged on the operating handle, and the first rotary shaft is provided with a positioning wheel which rotates synchronously therewith; the circumferential surface of the positioning wheel fits to the limiting boss; and the positioning wheel is provided with a clearance notch in the circumferential direction thereof, so as to provide clearance for the limiting boss.

Description

Locking mechanism, locking device and display equipment

[0001] This application claims priority to Chinese Patent Application No. 202411742054.5, filed on November 28, 2024, entitled "Lock Mechanism, Locking Device and Display Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to, but is not limited to, the technical field of display devices, and particularly to a locking mechanism, a locking device, and a display device. Background Technology

[0003] Display devices are typically composed of several LED (Light Emitting Diode) cabinets spliced ​​together, and locking devices are usually provided between adjacent LED cabinets to achieve a secure connection between them.

[0004] The locking device is equipped with a rotatable operating handle, which in turn has a U-shaped locking bar. When adjacent LED cabinets are securely connected, the U-shaped locking bar hooks onto the lock seat's latch. If it is necessary to separate adjacent LED cabinets, rotating the operating handle releases the U-shaped locking bar from the lock seat, thereby allowing the adjacent LED cabinets to be separated.

[0005] To facilitate the operation of the handle, a large opening angle needs to be maintained between the handle and the LED cabinet. Summary of the Invention

[0006] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims.

[0007] Therefore, this application proposes a locking mechanism, a locking device, and a display device, with an easy-to-use operating handle that can be flipped to a compact position for easy storage.

[0008] In a first aspect, embodiments of this application provide a locking mechanism, including:

[0009] The first base has a limiting boss;

[0010] The operating handle is rotatably connected to the first base.

[0011] The locking assembly includes a first rotating shaft and a locking rod. The first rotating shaft is rotatably mounted on the operating handle. The first rotating shaft is provided with a synchronously rotating positioning wheel. The circumferential surface of the positioning wheel is in contact with the limiting boss. The positioning wheel has a clearance notch in its circumferential direction to allow clearance for the limiting boss.

[0012] Secondly, embodiments of this application provide a locking device, including:

[0013] According to the locking mechanism of the first aspect mentioned above; and

[0014] Locking mechanism, including:

[0015] The second base has two spaced mounting side plates, with an arc-shaped guide channel formed between the two mounting side plates;

[0016] An arc-shaped lock seat is slidably mounted on a guide channel. The arc-shaped lock seat has an arc-shaped scale panel with a latch for the locking rod to hold. An arc-shaped groove penetrating the scale surface of the scale panel is provided along the sliding direction of the scale panel. The arc-shaped lock seat also has a first positioning tooth and a positioning groove sequentially arranged along the sliding direction of the arc-shaped lock seat. The first positioning tooth and the positioning groove are located on the surface of the scale panel facing away from the scale surface.

[0017] The positioning assembly includes a positioning screw, a first positioning element, an operating handle, and a second positioning element. The first positioning element is slidably disposed on the inner side of the second base and has a second positioning tooth that mates with the first positioning tooth. The positioning screw is rotatably disposed on the second base and passes through the first positioning element and the arc-shaped groove in sequence. The positioning screw is threadedly connected to the first positioning element. The operating handle is disposed at the end of the positioning screw located on the scale panel. The operating handle is operated to control the rotation of the positioning screw so that the first positioning tooth and the second positioning tooth engage or disengage. The second positioning element is elastically and telescopically disposed on the second base to abut against the positioning groove.

[0018] Thirdly, embodiments of this application provide a display device, including:

[0019] At least two LED (Light Emitting Diode) cabinets that are spliced ​​together;

[0020] According to the locking device of the second aspect mentioned above, the latching 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 hooked in the latch of the arc-shaped locking seat.

[0021] As can be seen from the above technical solutions, the embodiments of this application have the following advantages: During the rotation of the locking rod, the locking rod drives the first rotating shaft to rotate synchronously, and the first rotating shaft drives the positioning wheel to rotate synchronously. When the locking rod rotates within a certain angle range, the area of ​​the positioning wheel without the clearance notch faces the limiting boss; when the locking rod rotates within another angle range, the clearance notch of the positioning wheel faces the limiting boss. When 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, thereby effectively limiting the excessive flipping of the operating handle towards the back of the LED cabinet, thus ensuring that the operating handle has a large unfolding angle relative to the LED cabinet. Therefore, the operator can easily hold the operating handle to control its rotation. 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 towards the LED cabinet, or in other words, the interference with the flipping of the operating handle towards the LED cabinet is small. With this setting, the operating handle flips compactly to the back of the LED cabinet, thereby ensuring that the overall thickness of the LED cabinet is small, thus facilitating the storage and transportation of the LED cabinet.

[0022] After reading and understanding the accompanying diagrams and detailed descriptions, the other aspects can be understood. Attached Figure Description

[0023] Figure 1 is a schematic diagram of the overall structure of the locking mechanism according to an embodiment of this application;

[0024] Figure 2 is a structural schematic diagram of the locking mechanism of this application applied to an LED cabinet;

[0025] Figure 3 is an exploded view of the locking mechanism according to an embodiment of this application;

[0026] Figure 4 is a schematic diagram of the positioning wheel in an embodiment of this application;

[0027] Figure 5 is a structural schematic diagram of the first base and positioning wheel according to an embodiment of this application;

[0028] Figure 6 is a schematic diagram of another structure of the first base and positioning wheel according to an embodiment of this application;

[0029] Figure 7 is an exploded view of part of the locking mechanism according to an embodiment of this application;

[0030] Figure 8 is a cross-sectional view of the locking mechanism according to an embodiment of this application;

[0031] Figure 9 is a structural schematic diagram of the locking mechanism and the locking seat mechanism according to an embodiment of this application;

[0032] Figure 10 is a structural schematic diagram of the lock seat mechanism according to an embodiment of this application;

[0033] Figure 11 is an exploded view of the lock seat mechanism according to an embodiment of this application;

[0034] Figure 12 is a schematic diagram of the structure of a display device according to an embodiment of this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100. Locking mechanism; 110. First base; 111. Limiting boss; 112. Clearance groove; 113. Second pivot; 114. Second lug; 120. Operating handle; 121. First lug; 122. Slot; 130. Locking assembly; 131. First pivot; 1311. Limiting groove; 1312. Stepped surface; 132. Locking rod; 133. Positioning wheel; 1331. Annular part; 1332. Notched annular part; 1333. Clearance notch; 1334. Clearance opening; 1335. Limiting protrusion; 134. First elastic element; 1341. Spiral part; 1342. Connecting arm; 135. Limiting pin; 136. Second elastic element; 140. Stop 150. Rod; 151. Ratchet assembly; 151. Ratchet; 1511. First ratchet; 152. Pressing element; 1521. Second ratchet; 153. Third elastic element; 200. Locking seat mechanism; 210. Second base; 211. Mounting side plate; 2111. Guide groove; 212. Guide channel; 220. Arc-shaped locking seat; 221. Scale panel; 2211. First positioning tooth; 2212. Lock; 2213. Arc-shaped slide groove; 230. Positioning assembly; 231. Positioning screw; 232. First positioning element; 2321. Second positioning tooth; 2322. Guide protrusion; 233. Operating handle; 234. Second positioning element; 300. LED housing. Embodiments of the present invention

[0037] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0038] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, up, down, etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, 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.

[0039] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0040] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0041] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The following is a detailed description of this application with reference to the accompanying drawings.

[0043] Please refer to Figures 1 and 2, which show a locking mechanism 100 provided in an embodiment of this application. For ease of description, the locking mechanism 100 is applied to an LED (Light Emitting Diode) cabinet 300 as an example for the scheme description. Of course, this application does not limit the locking mechanism 100 to the splicing of LED cabinets 300.

[0044] Specifically, referring to Figures 1 and 3, the locking mechanism 100 includes a first base 110, an operating handle 120, and a locking assembly 130. 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 connected to each other. The first rotating shaft 131 is rotatably mounted on the operating handle 120, and the locking rod 132 is generally U-shaped, with both ends of the locking rod 132 connected to both ends of the first rotating shaft 131. A synchronously rotating positioning wheel 133 is fixedly mounted on the first rotating shaft 131, and the circumferential surface of the positioning wheel 133 is in contact with the limiting boss 111; and the positioning wheel 133 is provided with a clearance notch 1333 in its circumferential direction to allow clearance for the limiting boss 111 (see Figure 4).

[0045] The positioning wheel 133 and the first rotating shaft 131 are integrally formed, or the positioning wheel 133 and the first rotating shaft 131 are assembled components.

[0046] During use, as the locking lever 132 rotates, it drives the first rotating shaft 131 to rotate synchronously. The first rotating shaft 131 then drives the positioning wheel 133 to rotate synchronously. When the locking lever 132 rotates within the first angle range, the area of ​​the positioning wheel 133 without the clearance notch 1333 faces the limiting boss 111 (see Figure 5). When the locking lever 132 rotates within the second angle range, the clearance notch 1333 of the positioning wheel 133 faces the limiting boss 111 (see Figure 6). When 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, thereby effectively limiting the operating handle 120 from excessively rotating towards the back of the LED housing 300. This ensures that the operating handle 120 has a large unfolding angle relative to the LED housing 300, allowing the operator to easily grip the operating handle 120 to control its rotation. If the clearance notch 1333 of the positioning wheel 133 faces the limiting boss 111, the limiting boss 111 will not interfere with the operation handle 120 flipping towards the LED housing 300, or in other words, the interference with the flipping of the operation handle 120 towards the LED housing 300 is small. With this setting, the operation handle 120 flips compactly to the back side of the LED housing 300, thereby ensuring that the overall thickness of the LED housing 300 is small, which facilitates the storage and transportation of the LED housing 300.

[0047] In one embodiment, referring to Figures 1, 2, 5, and 6, in response to the hooking state between the locking rod 132 and the latch 2212 of the locking seat mechanism 200, 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; while, when the locking rod 132 is flipped to abut the operating handle 120, the clearance notch 1333 is provided facing the limiting boss 111.

[0048] With this configuration, within the first angular range of the locking lever 132 approaching the latch 2212, the area of ​​the positioning wheel 133 without the clearance notch 1333 faces the limiting boss 111, at which point the locking lever 132 is in use. Therefore, the limiting boss 111, through the positioning wheel 133, allows the operating handle 120 to have a large unfolding angle relative to the back of the LED housing 300 when in use, making it easier for the operator to grip the operating handle 120 and control its rotation. Conversely, within the second angular range of the locking lever 132 approaching the operating handle 120, the clearance notch 1333 of the positioning wheel 133 faces the limiting boss 111, at which point the locking lever 132 is in an unused state. Therefore, when the operating handle 120 is not in use, the limiting boss 111 does not interfere with or interferes with the positioning wheel 133 to a low degree, thereby allowing the operating handle 120 to be compactly flipped to the surface close to the LED cabinet 300, thus ensuring that the overall thickness of the LED cabinet 300 is small, and that the LED cabinet 300 is convenient to store and transport.

[0049] In other possible implementations, within a first angular range near the latch 2212, the clearance notch 1333 of the positioning wheel 133 faces the limiting boss 111. Therefore, when the locking lever 132 is in use, the operating handle 120 is compactly flipped to the back side of the LED housing 300, thereby ensuring a small overall thickness of the LED housing 300 and facilitating its installation. Conversely, within a second angular range near 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 lever 132 is not in use, the operating handle 120 has a large unfolding angle relative to the back side of the LED housing 300, making it convenient for operators to grip the operating handle 120 for subsequent use of the latch mechanism 100.

[0050] In some embodiments, referring to FIG3, the latch assembly 130 further includes a first elastic element 134, which is configured to drive the latch 132 to rotate toward the operating handle 120 in response to the release of the hooking state between the latch 132 and the latch 2212. Specifically, when it is necessary to disassemble the LED housing 300, the operator grips and rotates the operating handle 120, which switches the latch 132 from the hooking state to the released state. After the latch 132 is switched to the released state, it rotates toward the operating handle 120 under the action of the first elastic element 134, thereby separating the latch 132 from the latch 2212 without the operator having to manually separate the latch 132 from the latch 2212, reducing the operator's workload.

[0051] Understandably, if the locking lever 132 is within the second angle range near 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 so that the clearance notch 1333 of the positioning wheel 133 faces the limiting boss 111, the operator can compactly flip the operating handle 120 to the back side of the LED cabinet 300, thereby facilitating the storage of the LED cabinet 300.

[0052] In some embodiments, referring to Figures 1 and 3, the locking mechanism 100 further includes a stop bar 140. The stop bar 140 is disposed on the side of the operating handle 120 near the end of the first base 110. When the locking lever 132 moves to the position of the stop bar 140, the stop bar 140 effectively restricts the locking lever 132 from continuing to rotate forward. More precisely, the stop bar 140 effectively restricts the locking lever 132 from rotating from a first angular range to a second angular range, or from a second angular range to a first angular range. When the locking lever 132 moves to the position of the stop lever 140, the positioning wheel 133 rotates to a point close to the two states. When the locking lever 132 is within the first angle range, the area of ​​the positioning wheel 133 without the clearance notch 1333 faces the limiting boss 111. That is, the circumferential surface of the positioning wheel 133 can fit against the limiting boss 111. As a result, the operating handle 120 has a large unfolding angle relative to the LED housing 300 for easy operation. When the locking lever 132 rotates from the first angle range to the second angle range, the clearance notch 1333 of the positioning wheel 133 faces the limiting boss 111. As a result, the operating handle 120 can be compactly flipped to the back of the LED housing 300 for easy storage of the LED housing 300.

[0053] It is understandable that by setting the stop lever 140, the stop lever 140 restricts the rotation of the operating handle 120, thereby keeping the positioning wheel 133 in a certain state. For example, the stop lever 140 keeps the area of ​​the positioning wheel 133 without the clearance notch 1333 facing the limiting boss 111, thereby giving the operating handle 120 a large unfolding angle relative to the LED housing 300, thus making it convenient for the operator to operate the rotation of the operating handle 120.

[0054] To allow the locking lever 132 to pass over the stop bar 140, in one possible embodiment, referring to Figure 3, a first rotating shaft 131 is axially slidably disposed on the operating handle 120 and the positioning wheel 133, so that the locking lever 132 can pass over the stop bar 140. Specifically, the operating handle 120 has two first lugs 121 on the side near the LED housing 300, and the positioning wheel 133 is disposed between the two first lugs 121. The first rotating shaft 131 passes through the two lugs 121 and the positioning wheel 133 in sequence and can slide axially. The first rotating shaft 131 is rotatably connected to the first lugs 121. At the same time, the locking assembly 130 also includes a second elastic element 136. In this embodiment, the second elastic element 136 is a spring. The second elastic element 136 is sleeved on the first rotating shaft 131. One end of the second elastic element 136 abuts against the stepped surface 1312 on the side of the first rotating shaft 131, and the other end of the second elastic element 136 abuts against the inner side of the first lug 121. When the locking rod 132 is not subjected to axial force, the second elastic element 136 resets the first rotating shaft 131 and the locking rod 132 to their initial positions.

[0055] Specifically, when the locking lever 132 rotates from the first angle range to the second angle range, or from the second angle range to the first angle range, the operator, while manipulating the locking lever 132 to rotate, pushes the locking lever 132 to slide axially along with the first rotating shaft 131. The distance between the side arm of the locking lever 132 near the stop lever 140 and the operating handle 120 gradually increases, and the second elastic element 136 is gradually compressed. When the aforementioned distance is greater than the length extended by the stop lever 140, the locking lever 132 rotates past the stop lever 140. After the locking lever 132 passes the stop lever 140, the first rotating shaft 131 returns to its initial position under the action of the second elastic element 136. Correspondingly, the locking lever 132 synchronously returns to its initial position along with the first rotating shaft 131, and the stop lever 140 effectively restricts the rotation of the locking lever 132 again.

[0056] In another possible embodiment, referring to FIG3, to allow the locking rod 132 to pass over the stop bar 140, the locking rod 132 is slidably disposed on the first rotating shaft 131, so that the locking rod 132 can pass over the stop bar 140. Specifically, after passing through the two first lugs 121, the two ends of the first rotating shaft 131 are exposed with sufficient length, and the two ends of the locking rod 132 are axially slidably disposed on the two ends of the first rotating shaft 131, respectively. The locking assembly 130 also includes a second elastic element 136, which is a spring in this embodiment. The second elastic element 136 is sleeved on the first rotating shaft 131, with one end abutting against the side arm of the locking rod 132 and the other end abutting against the outer side of the first lug 121. When the locking rod 132 is not subjected to axial force, the second elastic element 136 causes the locking rod 132 to axially return to the initial position.

[0057] Specifically, when the operator rotates the locking lever 132, pushing both ends of the locking lever 132 to slide along the axial direction of the first rotating shaft 131, the distance between the side arm of the locking lever 132 near the stop lever 140 and the operating handle 120 gradually increases, and the second elastic element 136 is gradually compressed. When the aforementioned distance is greater than the length extended by the stop lever 140, the locking lever 132 rotates past the stop lever 140. After passing the stop lever 140, the locking lever 132 returns to its initial position under the action of the second elastic element 136, and the stop lever 140 effectively restricts the rotation of the locking lever 132 again.

[0058] In other possible embodiments, to allow the locking lever 132 to pass over the stop lever 140, the stop lever 140 can be elastically extended and retracted on the operating handle 120, allowing the locking lever 132 to pass over the stop lever 140. For example, one end of the stop lever 140 is slidably disposed on the side of the operating handle 120 by a spring. In use, when the side arm of the locking lever 132 moves to the position of the stop lever 140, the end of the stop lever 140 is pressed and elastically retracted towards the operating handle 120 until the stop lever 140 no longer interferes with the side arm of the locking lever 132, thereby allowing the locking lever 132 to pass over the stop lever 140. After the locking lever 132 passes over the stop lever 140, the stop lever 140 returns to its extended position, thereby effectively restricting the rotation of the locking lever 132 again.

[0059] To allow the first rotating shaft 131 to slide within a set range, in some specific embodiments, referring to Figures 7 and 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. The limiting pin 135 is slidably disposed in the limiting groove 1311, so that the locking rod 132 slides within the set range. For example, the side wall of the positioning wheel 133 is provided with an insertion hole penetrating its inner and outer sides, and the side wall of the first rotating shaft 131 is provided with a limiting groove 1311 along its axial direction, with the insertion hole and the limiting groove 1311 corresponding to each other. One end of the pin is inserted and fixed in the insertion hole, and the other end is slidably embedded in the limiting groove 1311. With this configuration, 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, thereby allowing the first rotating shaft 131 to move within a set range, and thus allowing the locking rod 132 to slide axially within a controllable range. The operator can easily slide the locking rod 132 to a suitable position to pass over the stop bar 140.

[0060] It is understandable that a limiting pin 135 is provided between the first rotating shaft 131 and the positioning wheel 133, and the positioning wheel 133 and the first rotating shaft 131 are circumferentially restricted. With this configuration, 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 limiting pin 135, so that the clearance notch 1333 of the positioning wheel 133 faces the limiting boss 111, thereby causing the operating handle 120 to be tightly flipped to the back side of the LED box 300.

[0061] In some embodiments, referring to Figures 3 and 4, the positioning wheel 133 includes two annular portions 1331 and a notched annular portion 1332 sleeved on the outside of the first rotating shaft 131. The notched annular portion 1332 is approximately semi-annular and connects the two annular portions 1331. The clearance notch 1333 is formed between the two ends of the notched annular portion 1332 in the circumferential direction, or in other words, the clearance notch 1333 is approximately 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 is embedded in the clearance notch 1333. More precisely, the limiting boss 111 is embedded between the two annular portions 1331. With this configuration, the overall structure of the positioning wheel 133 is simple, the limiting boss 111 and the positioning wheel 133 are effectively positioned, and the limiting boss 111 effectively ensures the stability of the operating handle 120.

[0062] In some embodiments, the outer diameter of the annular portion 1331 is smaller than the outer diameter of the notched annular portion 1332, and the notched annular portion 1332 has a limiting protrusion 1335 at one end in the circumferential direction. Along the radial direction of the positioning wheel 133, a clearance opening 1334 is formed between the outer side of the annular portion 1331 and the inner side of the limiting protrusion 1335. Simultaneously, the first elastic member 134 is a torsion spring, comprising two helical portions 1341 and a connecting arm 1342 connecting the two helical portions 1341. The connecting arm 1342 is laterally engaged with the inner side of the limiting protrusion 1335 and extends from the two clearance openings 1334. The two helical portions 1341 are respectively fitted onto the annular portion 1331. Two slots 122 are provided along the edges of the two first lugs 121, and the two end arms of the first elastic member 134 are engaged within the slots 122. As can be seen from the above, the positioning wheel 133 adopts the above-described structural form, and the first elastic element 134 is conveniently assembled on the positioning wheel 133 to provide elastic force for the locking rod 132 to reset.

[0063] In some embodiments, referring to FIG5, the limiting boss 111 is provided with a relief groove 112 on the side near the positioning wheel 133. When the relief notch 1333 faces the limiting boss 111, the relief groove 112 is configured as a limiting protrusion 1335 to make way. It can be seen that, by setting the relief groove 112, the limiting protrusion 1335 is embedded in the relief groove 112. In this way, the positioning wheel 133 is compactly close to the limiting boss 111, and in particular, the limiting boss 111 is compactly attached to the side wall of the first rotating shaft 131, thereby making the operating handle 120 compactly flip to the back of the LED housing 300.

[0064] In some embodiments, referring to FIG3, the locking mechanism 100 further includes a ratchet assembly 150, which is configured to restrict the operation handle 120 from rotating in the direction toward the latch 2212. Specifically, the ratchet assembly 150 includes a ratchet 151, a pressing member 152, and a third elastic member 153. The first base 110 is provided with a second lug 114, and a second rotating shaft 113 is fixedly disposed on the second lug 114. The ratchet 151 is sleeved 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 disposed at one end of the operating handle 120 near the first base 110. The pressing member 152 has a second ratchet portion 1521 that engages with the first ratchet portion 1511. The pressing member 152 is configured to be pressed to separate the second ratchet portion 1521 from the first ratchet portion 1521. The ratchet assembly 150 is configured to restrict the rotation of the operating handle 120 in the direction toward the hook between the release lever 132 and the latch 2212 when the first ratchet portion 1511 engages with the second ratchet portion 1521, that is, to restrict the rotation of the operating handle 120 toward the latch 2212. The third elastic member 153 is configured to allow the first ratchet portion 1511 to engage with the second ratchet portion 1521 when the pressing member 152 is not subjected to pressing force.

[0065] In use, when the locking lever 132 is engaged with the latch 2212, the second ratchet 1521, under the action of the third elastic member 153, engages with the first ratchet 1511 of the ratchet 151, thereby effectively restricting the operation handle 120 from rotating toward the latch 2212, thus ensuring that the locking lever 132 is securely engaged with the latch 2212. This securely connects adjacent LED housings 300 via the latch mechanism 100. When it is necessary to separate the LED housings 300, the operator rotates the pressing member 152, causing the second ratchet 1521 to move away from and separate from the first ratchet 1511. At this time, the operator rotates the operation handle 120 toward the latch 2212, thereby releasing the engagement force between the locking lever 132 and the latch 2212.

[0066] This application also discloses a locking device, referring to Figures 9 to 11, which includes the above-mentioned locking mechanism 100 and locking seat mechanism 200. The locking seat mechanism 200 includes a second base 210, an arc-shaped locking seat 220 and a positioning component 230.

[0067] The second base 210 has two spaced mounting side plates 211, forming an arc-shaped guide channel 212 between them. An arc-shaped lock seat 220 is slidably disposed in the guide channel 212. The arc-shaped lock seat 220 has an arc-shaped scale panel 221, and the scale panel 221 has an arc-shaped groove 2213 penetrating its scale surface along its sliding direction. The scale surface of the scale panel 221 has a latch 2212 for the locking rod 132 to hook onto. The arc-shaped lock seat 220 has a first positioning tooth 2211 and a positioning groove sequentially along its sliding direction. Specifically, the first positioning tooth 2211 is located on the surface of the scale panel 221 facing away from the scale surface; that is, the first positioning tooth 2211 and the positioning groove are located on the inner side of the scale panel 221 and distributed on both sides of the groove, thereby preventing the first positioning tooth 2211 from being exposed on the outer side of the scale panel 221 and easily damaged by impact.

[0068] The positioning assembly 230 includes a positioning screw 231, a first positioning member 232, an operating handle 233, and a second positioning member 234. The first positioning member 232 is slidably disposed on the inner side of the second base 210 to move away from or towards the scale panel 221. Specifically, the two mounting side plates 211 are provided with guide grooves 2111, and the first positioning member 232 is provided with guide protrusions 2322 on both sides. The guide protrusions 2322 are slidably embedded in the guide grooves 2111, thereby slidably disposing the first positioning member 232 on the inner side of the second base 210. The side of the first positioning member 232 near the scale panel 221 is provided with a second positioning tooth 2321 that mates with the first positioning tooth 2211. One end of the positioning screw 231 is rotatably disposed on the second base 210, and the other end of the positioning screw 231 passes sequentially through the first positioning member 232 and the arc-shaped slide groove 2213, and extends out of the outer side of the positioning slide groove. The positioning screw 231 is threadedly connected to the first positioning member 232. An operating handle 233 is located at one end of the positioning screw 231 facing away from the scale panel 221. The operating handle 233 is operated to control the rotation of the positioning screw 231, causing the first positioning tooth 2211 to engage or disengage with the second positioning tooth 2321. The second positioning member 234 is approximately ball-shaped and elastically telescopically mounted on the second base 210. The second positioning member 234 is configured to abut against the positioning groove.

[0069] In use, to accommodate the latch 2212, the operator drives the positioning screw 231 to rotate via the operating handle 233. The positioning screw 231 causes the first positioning member 232 to move away from the scale panel 221, separating the first positioning tooth 2211 from the second positioning tooth 2321, thus releasing the first positioning member 232 from restricting the arc-shaped lock seat 220. At this time, the operator adjusts the position of the arc-shaped lock seat 220 along the guide channel 212, thereby adjusting the position of the latch 2212. During the adjustment process, the second positioning member 234 automatically and elastically retracts, allowing the arc-shaped lock seat 220 to adjust normally. After the arc-shaped lock seat 220 is adjusted, the second positioning member 234 automatically engages in the positioning groove, thus maintaining the arc-shaped lock seat 220 in the adjusted position. Therefore, after the arc-shaped lock seat 220 is adjusted, the second positioning member 234 keeps the arc-shaped lock seat 220 in the adjusted position. Thus, the operator can easily drive the positioning screw 231 to rotate by operating the handle 233. The positioning screw 231 drives the first positioning member 232 to slide toward the scale panel 221, so that the first positioning tooth 2211 and the second positioning tooth 2321 lock together again, thereby keeping the arc-shaped lock seat 220 firmly in the adjusted position.

[0070] It should be noted that the positioning component 230 adopts the above-described arrangement, that is, the operating handle 233 is set on the outer side of the scale surface of the scale panel 221. With this arrangement, the operator can conveniently drive the positioning screw 231 to rotate through the operating handle 233 to control the locking or unlocking of the arc-shaped lock seat 220.

[0071] This application also discloses a display device, referring to Figures 1, 3 and 12, which includes at least two LED cabinets 300 spliced ​​together and the above-mentioned locking device. The locking mechanism 100 is connected to the edge of one LED cabinet 300, the locking seat mechanism 200 is connected to the edge of the other LED cabinet 300, and the locking rod 132 is configured to hook into the locking buckle 2212 of the arc-shaped locking seat 220.

[0072] It is understandable that the display device uses the aforementioned locking device. During use, as the locking lever 132 rotates, it drives the first rotating shaft 131 to rotate synchronously. The first rotating shaft 131 then drives the positioning wheel 133 to rotate synchronously. When the locking lever 132 rotates within a first angle range, the area of ​​the positioning wheel 133 without the clearance notch 1333 faces the limiting boss 111. When the locking lever 132 rotates within a second angle range, the clearance notch 1333 of the positioning wheel 133 faces the limiting boss 111. When 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, effectively limiting the excessive rotation of the operating handle 120 towards the back of the LED cabinet 300. This ensures that the operating handle 120 has a large unfolding angle relative to the LED cabinet 300, allowing the operator to easily grip the operating handle 120 to control its rotation, thus 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 will not interfere with the rotation of the operating handle 120 toward the LED cabinet 300, or in other words, the interference with the rotation of the operating handle 120 toward the LED cabinet 300 is small. With this setting, the operating handle 120 can be compactly rotated to the back of the LED cabinet 300, thereby ensuring that the overall thickness of the display device is small, which facilitates the storage and transportation of the display device.

[0073] The technical means disclosed in this application are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. That is, the embodiments can be combined with each other, and will not be described in detail here. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications are also considered to fall within the protection scope of this application.

Claims

1. A locking mechanism (100), comprising: The first base (110) is provided with a limiting boss (111). The operating handle (120) is rotatably connected to the first base (110); and The locking assembly (130) includes a first rotating shaft (131) and a locking rod (132) connected to each other. The first rotating shaft (131) is rotatably mounted on the operating handle (120). The first rotating shaft (131) is provided with a synchronously rotating positioning wheel (133). The circumferential surface of the positioning wheel (133) is configured to fit against the limiting boss (111). The positioning wheel (133) is provided with a clearance notch (1333) in the circumferential direction of the positioning wheel (133) so as to make way for the limiting boss (111).

2. The locking mechanism (100) according to claim 1, wherein, In response to the hooked state of the locking bar (132), the area of ​​the positioning wheel (133) without the clearance notch (1333) faces the limiting boss (111); and in response to the locking bar (132) flipping to abut the operating handle (120), the clearance notch (1333) is provided facing the limiting boss (111).

3. The locking mechanism (100) according to any one of claims 1-2, wherein, The locking assembly (130) further includes a first elastic element (1334), which is configured to drive the locking rod (132) to flip in the direction toward the operating handle (120) in response to the locking rod (132) being in the released state.

4. The locking mechanism (100) according to any one of claims 1-3, wherein, The locking mechanism (100) further includes a stop bar (140) disposed on the side of the operating handle (120) and configured to restrict the locking bar (132) from rotating from a first angular range to a second angular range or from the second angular range to the first angular range; wherein, in response to the movement of the locking bar (132) within the first angular range, the area of ​​the positioning wheel (133) without the clearance notch (1333) faces the limiting boss (111); and in response to the movement of the locking bar (132) within the second angular range, the clearance notch (1333) faces the limiting boss (111); and The first rotating shaft (131) is axially slidably disposed on the operating handle (120) and the positioning wheel (133), or the locking rod (132) is slidably disposed on the first rotating shaft (131), or the stop rod (140) is elastically telescopically disposed on the operating handle (120) so that the locking rod (132) can pass over the stop rod (140).

5. The locking mechanism (100) according to claim 4, wherein, In response to the first rotating shaft (131) being axially slidably disposed on the operating handle (120) and the positioning wheel (133), one of the first rotating shaft (131) and the positioning wheel (133) is provided with a limiting groove (1311) along its axial direction, while the other of the first rotating shaft (131) and the positioning wheel (133) is provided with a limiting pin (135), the limiting pin (135) being slidably disposed in the limiting groove (1311), so that the locking rod (132) slides within the first angle range or the second angle range; and The locking assembly (130) further includes a second elastic element (136), which is configured to reset the locking rod (132) to its initial position when the locking rod (132) is not subjected to axial force.

6. The locking mechanism (100) according to any one of claims 3 to 5, wherein, Each of the positioning wheels (133) includes two annular portions (1331) and a notched annular portion (1332), the notched annular portion (1332) being connected between the two annular portions (1331), the clearance notch (1333) being formed between the two ends of the notched annular portion (1332) in the circumferential direction, and the width of the limiting boss (111) being less than or equal to the width of the clearance notch (1333) so as to be able to be embedded in the clearance notch (1333).

7. The locking mechanism (100) according to claim 6, wherein, The outer diameter of the annular portion (1331) is smaller than the outer diameter of the notched annular portion (1332), and the notched annular portion (1332) has a limiting protrusion (1335) at one end in the circumferential direction; wherein, along the radial direction of the positioning wheel (133), a clearance opening (1334) is formed between the outer side of each annular portion (1331) and the inner side of the limiting protrusion (1335); and The first elastic element (134) is a torsion spring, comprising two helical portions (1341) and a connecting arm (1342) connecting the two helical portions (1341). The connecting arm (1342) is engaged with the inner side of the limiting protrusion (1335) and extends from the two clearance openings (1334). The two helical portions (1341) are respectively fitted onto the annular portion (1331). The limiting boss (111) is provided with a relief groove (112) that is configured to make way for the limiting protrusion (1335).

8. The locking mechanism (100) according to any one of claims 1 to 7, wherein, The locking mechanism (100) further includes a ratchet assembly (150), which includes: A ratchet (151) is provided on the first base (110) with a second rotating shaft (113). The ratchet (151) is sleeved on the second rotating shaft (113). The ratchet (151) has a first ratchet tooth (1511) in the circumferential direction. A pressing member (152) is rotatably disposed on the operating handle (120). The pressing member (152) has a second ratchet portion (1521) that engages with the first ratchet portion (1511). The pressing member (152) is configured to be pressed to separate the second ratchet portion (1521) from the first ratchet portion (1521). The ratchet assembly (150) is configured to restrict the operating handle (120) from rotating in the direction of the unlocked state in response to the engagement of the first ratchet portion (1511) and the second ratchet portion (1521). The third elastic element (153) is configured to engage the first ratchet portion (1511) with the second ratchet portion (1521) in response to the pressing member (152) not being pressed.

9. A locking device, comprising: The locking mechanism (100) according to any one of claims 1 to 8; as well as Locking mechanism (200), including: The second base (210) has two spaced mounting side plates (211), and an arc-shaped guide channel (212) is formed between the two mounting side plates (211). An arc-shaped lock seat (220) is slidably disposed in the guide channel (212). The arc-shaped lock seat (220) is provided with an arc-shaped scale panel (221). The scale panel (221) is provided with a latch (2212) for the lock rod (132) to hook, and an arc-shaped groove (2213) penetrating the scale surface of the scale panel (221) is provided along the sliding direction of the scale panel (221). The arc-shaped lock seat (220) is provided with a first positioning tooth (2211) and a positioning groove in sequence along the sliding direction of the arc-shaped lock seat (220). The first positioning tooth (2211) and the positioning groove are located on the surface of the scale panel (221) facing away from the scale surface; and The positioning assembly (230) includes a positioning screw (231), a first positioning element (232), an operating handle (233), and a second positioning element (234). The first positioning element (232) is slidably disposed on the inner side of the second base (210) and is provided with a second positioning tooth (2321) that cooperates with the first positioning tooth (2211). The positioning screw (231) is rotatably disposed on the second base (210) and passes through the first positioning element (232) and the arc-shaped groove (2213) in sequence. The positioning screw (231) is threadedly connected to the first positioning member (232). The operating handle (233) is located at one end of the positioning screw (231) facing away from the scale panel (221). The operating handle (233) is operated to control the rotation of the positioning screw (231) so that the first positioning tooth (2211) and the second positioning tooth (2321) mesh or separate. The second positioning member (234) can be elastically extended and retracted on the second base (210) to abut against the positioning groove.

10. A display device, comprising: At least two LED (Light Emitting Diode) cabinets (300) are spliced ​​together. According to claim 9, the locking device is connected to the edge of one of the LED housings (300), the locking seat mechanism (200) is connected to the edge of the other LED housing (300), and the locking rod (132) is configured to hook into the latch (2212) of the arc-shaped locking seat (220).

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