Arc-shaped locking mechanism

Abstract

The utility model discloses an arc-shaped locking mechanism which is used for connecting adjacent frames and comprises a locking assembly and an angle adjusting assembly. The angle adjusting assembly comprises an adjusting seat and an adjusting piece, the adjusting seat is connected with the frame, an arc-shaped groove is formed in the adjusting seat, the first end of the adjusting piece is a sliding part, the sliding part is adjustably arranged in the arc-shaped groove in a sliding mode, and the second end of the adjusting piece is a first connecting part; the locking assembly is connected with the frame, and the locking assembly is connected with the first connecting part in a locking mode. The multiple sets of adjacent frames can be connected through the multiple sets of arc-shaped locking mechanisms, the positions of the adjusting pieces and the adjusting bases can be adjusted according to different installation conditions, the angle formed by the adjacent frames can be adjusted, the adjacent frames are made to be in a straight state or a bent state, and the frames can adapt to different installation conditions; for example, a plurality of frames can be connected into a plane, a concave surface, a convex surface, a cylindrical surface or other special-shaped surfaces, so that the adaptability of a corresponding LED screen is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED screen connection, in particular to an arc-shaped locking mechanism. Background Art

[0002] LED screens have good energy-saving effects and longer service life. When the lamp beads are well packaged and the lamps are assembled, the LED screens have good dust and water resistance and can adapt to outdoor working environments. Therefore, they are often used in outdoor lamps, light boxes, and advertising screens.

[0003] In some larger advertising screens, the length or width can reach several meters or tens of meters. It is almost impossible to directly produce such LED screens. The usual practice is to splice small module screens into large screens. Advertising planes are installed on city streets. When pedestrians watch advertisements in front of the large screen, the distance from the person to the middle of the large screen will be smaller than the distance from the person to the edge of the large screen, and there is a large distance difference, which can easily cause the picture in the field of vision to be seriously deformed and occasionally distorted, seriously reducing the viewing experience of pedestrians in front of the large screen and affecting the broadcast of advertisements. In addition, in many cases, the places where the screens are installed are large and small, curved and straight, and even column structures and special-shaped structures. The existing screen splicing method is single and has the defect of insufficient installation adaptability. Utility Model Content

[0004] In order to solve the technical problems in the prior art of single screen splicing method and insufficient installation adaptability, one of the purposes of the utility model is to provide an arc-shaped locking mechanism.

[0005] One of the purposes of the utility model is achieved by the following technical solution:

[0006] An arc-shaped locking mechanism for connecting adjacent frames, the arc-shaped locking mechanism comprising a locking assembly and an angle adjustment assembly;

[0007] The angle adjustment assembly includes an adjustment seat and an adjustment member, wherein the adjustment seat is connected to the frame, an arc-shaped groove is provided on the adjustment seat, a first end of the adjustment member is a sliding portion, and the sliding portion is adjustably slidably arranged in the arc-shaped groove, and a second end of the adjustment member is a first connecting portion;

[0008] The locking assembly is connected to the frame, and the locking assembly is locked to the first connecting portion.

[0009] Optionally, the locking assembly includes a connecting seat, a first movable rod and a locking handle;

[0010] The connecting seat is provided with a second connecting portion, and the second connecting portion is provided with a first through hole through which the first end of the first movable rod can pass;

[0011] A first locking portion is provided at the first end of the first movable rod, the first end of the first movable rod passes through the second connecting portion, and the first locking portion is movably connected to the first connecting portion;

[0012] The locking handle is disposed on the first movable rod, and the locking handle is threadedly connected to the first movable rod;

[0013] When the first locking portion is movably connected to the first connecting portion, the locking handle is rotated to drive the first movable rod away from the first connecting portion to lock the movable connection.

[0014] Optionally, the first locking portion is a pin disposed on the outer circumferential surface of the first end of the first movable rod;

[0015] The first connecting portion is provided with a second through hole through which the first end of the first movable rod can pass;

[0016] The second end of the first movable rod is provided with a rotating portion for rotating the first movable rod;

[0017] The rotating portion is twisted, and the first locking portion rotates away from the position where the first locking portion passes through the second through hole.

[0018] Optionally, the locking assembly further includes a first elastic member, which is sleeved on the first movable rod, one end of the first elastic member abuts against the second connecting portion, and the other end of the first elastic member applies an elastic thrust to the first movable rod.

[0019] Optionally, a first positioning groove is provided on a side of the first connecting portion away from the connecting seat;

[0020] The first positioning groove passes through the position where the second through hole is located;

[0021] The rotating portion is twisted so that the first locking portion is screwed into the first positioning groove.

[0022] Optionally, the locking assembly further includes a limiting plate, the limiting plate is provided with a third through hole for allowing the middle portion of the first movable rod to pass through, and the limiting plate is arranged on a side of the second connecting portion away from the adjusting member.

[0023] Optionally, the sliding portion is provided with a through groove arranged along the sliding direction thereof, and the through groove penetrates the sliding portion;

[0024] The angle adjustment assembly further comprises a quick release locking mechanism, wherein the quick release locking mechanism comprises a quick release head and a second movable rod;

[0025] The quick-release head is rotatably disposed on the second end of the second movable rod;

[0026] The second movable rod is inserted into the adjustment seat, the first end of the second movable rod passes through the through slot, the first end of the second movable rod is provided with a second locking portion, and the second locking portion is located on a side of the sliding portion away from the quick release head.

[0027] Optionally, a plurality of second positioning grooves are provided along an edge of the through groove on a side of the sliding portion away from the quick-release head.

[0028] Optionally, the sliding portion is provided with a plurality of positioning holes arranged along the sliding direction, and the positioning holes are arranged in a one-to-one correspondence with the second positioning grooves;

[0029] The angle adjustment assembly further comprises an elastic positioning member for positioning before locking, wherein the elastic positioning member is arranged on the adjustment seat and faces one of the positioning holes.

[0030] Optionally, a nut groove is provided on a side of the adjustment seat opposite to the quick-release head;

[0031] The second movable rod passes through the adjustment seat and extends into the nut groove;

[0032] The quick-release locking mechanism also includes a gasket, a second elastic member and a nut. The nut is arranged in the nut groove. The nut is threadedly connected to the second movable rod. The second elastic member is arranged in the nut groove and is sleeved on the second movable rod. The gasket is sleeved on the second movable rod and is located between the quick-release head and the adjustment seat. The gasket is provided with an arc-shaped groove on one side facing the quick-release head.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] In the utility model, the angle adjustment component and the locking component are respectively connected to two adjacent frames. The angle adjustment component is connected to the corresponding frame through the adjustment seat. The sliding part of the adjustment member is slidably set in the arc groove in the adjustment seat. At the same time, the adjustment member is also connected to the locking component through the first connecting part, that is, the two adjacent frames are connected through the adjustment seat, the angle adjustment component and the locking component. By adjusting the position of the adjustment member in the arc groove, the angle between the adjustment member and the corresponding frame can be changed, thereby adjusting the angle of the two adjacent frames. In this way, multiple groups of adjacent frames can be connected through multiple groups of arc locking mechanisms. The positions of the adjustment members and the adjustment seats can be adjusted according to different installation conditions, and the angles of adjacent frames can be adjusted so that the adjacent frames are in a straight state or a curved state, so that the frames can adapt to different installation conditions. For example, multiple frames can be connected into planes, concave surfaces, convex surfaces, cylindrical surfaces or other special-shaped surfaces, thereby improving the adaptability of the corresponding LED screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the arc-shaped locking mechanism of the utility model arranged on the frame;

[0036] Figure 2 It is a structural schematic diagram of the arc-shaped locking mechanism of the utility model;

[0037] Figure 3 It is an exploded schematic diagram of the arc-shaped locking mechanism of the utility model;

[0038] Figure 4 It is a structural schematic diagram of the adjustment seat in the arc-shaped locking mechanism of the utility model;

[0039] Figure 5 This is a schematic diagram of the structure of the straight connection of the arc-shaped locking mechanism of the utility model;

[0040] Figure 6 It is a structural schematic diagram of the concave connection of the arc-shaped locking mechanism of the utility model;

[0041] Figure 7 It is a structural schematic diagram of the external convex connection of the arc-shaped locking mechanism of the utility model.

[0042] Description of the accompanying drawings:

[0043] 1. Locking assembly; 11. Connecting seat; 111. Second connecting part; 112. First through hole; 12. First movable rod; 121. First locking part; 122. Rotating part; 13. Locking handle; 14. First elastic member; 15. Limiting plate;

[0044] 2. Angle adjustment assembly; 21. Adjustment seat; 211. Arc groove; 22. Adjustment member; 221. Sliding portion; 2211. Through groove; 2212. Second positioning groove; 2213. Positioning hole; 222. First connecting portion; 2221. Second through hole; 2222. First positioning groove; 23. Quick release locking mechanism; 231. Quick release head; 232. Second movable rod; 2321. Second locking portion; 233. Washer; 234. Second elastic member; 235. Nut; 24. Elastic positioning member;

[0045] 3. Framework. DETAILED DESCRIPTION

[0046] The following will be combined with the attached examples of the present application Figure 1 To Attachment Figure 7 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0047] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0048] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0049] like Figure 1-4 An arc-shaped locking mechanism is shown, which is used to connect adjacent frames 3. The arc-shaped locking mechanism includes a locking assembly 1 and an angle adjustment assembly 2. The angle adjustment assembly 2 includes an adjustment seat 21 and an adjustment member 22. The adjustment seat 21 is connected to the frame 3. The adjustment seat 21 is provided with an arc-shaped groove 211. The first end of the adjustment member 22 is a sliding portion 221. The sliding portion 221 is adjustably slidably arranged in the arc-shaped groove 211. The second end of the adjustment member 22 is a first connecting portion 222. The locking assembly 1 is connected to the frame 3, and the locking assembly 1 is locked and connected to the first connecting portion 222.

[0050] The angle adjustment component 2 and the locking component 1 are respectively connected to two adjacent frames 3. The angle adjustment component 2 is connected to the corresponding frame 3 through the adjustment seat 21. The sliding portion 221 of the adjustment member 22 is slidably set in the arc groove 211 in the adjustment seat 21. At the same time, the adjustment member 22 is also connected to the locking component 1 through the first connecting portion 222, that is, the two adjacent frames 3 are connected through the adjustment seat 21, the angle adjustment component 2 and the locking component 1. By adjusting the position of the adjustment member 22 in the arc groove 211, the angle between the adjustment member 22 and the corresponding frame 3 can be changed, thereby adjusting the angle of the two adjacent frames 3. In this way, multiple groups of adjacent frames 3 can be connected through multiple groups of arc locking mechanisms. The positions of the adjustment members 22 and the adjustment seats 21 can be adjusted according to different installation conditions, and the angles of adjacent frames 3 can be adjusted so that the adjacent frames 3 are in a straight state or a curved state, so that the frames 3 can adapt to different installation conditions. For example, multiple frames 3 can be connected into a plane (such as Figure 5 As shown), concave (as Figure 6 As shown), convex surface (as Figure 7As shown), cylinders or other special-shaped surfaces, thereby improving the assembly adaptability of the corresponding LED screen.

[0051] In some embodiments of the locking assembly 1, such as Figure 2 , Figure 3 As shown, the locking assembly 1 comprises a connecting seat 11, a first movable rod 12 and a locking handle 13. The connecting seat 11 is provided with a second connecting portion 111, and the second connecting portion 111 is provided with a first through hole 112 for the first end of the first movable rod 12 to pass through.

[0052] The first end of the first movable rod 12 is provided with a first locking portion 121, the first end of the first movable rod 12 passes through the second connecting portion 111, and the first locking portion 121 is movably connected to the first connecting portion 222. The locking handle 13 is sleeved on the first movable rod 12, and the locking handle 13 is threadedly connected to the first movable rod 12. When the first locking portion 121 is movably connected to the first connecting portion 222, the locking handle 13 is rotated to drive the first movable rod 12 away from the first connecting portion 222 to lock the movable connection.

[0053] The first movable rod 12 passes through the first through hole 112 on the second connecting portion 111, and then the first movable rod 12 is movably connected to the first connecting portion 222 through the first locking portion 121. The locking handle 13 is rotated, for example, by tightening, and the locking handle 13 drives the first movable rod 12 to move toward the first connecting portion 222, thereby locking the movable connection to prevent the connection from being disengaged.

[0054] Regarding the first end of the first movable rod 12 passing through the second connecting portion 111, that is, the first end of the first movable rod 12 passes through the first through hole 112, specifically, the first through hole 112 includes, in addition to the main hole area through which the main part of the first movable rod 12 can pass, a secondary hole area located on one side or both sides of the main hole, and the secondary hole area can allow the first locking portion 121 to pass. More specifically, the main hole area is adapted to the shape of the main part of the first movable rod 12, and the secondary hole area is adapted to the shape of the first locking portion 121.

[0055] For the aforementioned movable connection, the first locking portion 121 can be a barb. When the first locking portion 121 is hooked with the first connecting portion 222, after being locked by the locking handle 13, the first movable rod 12 can be tightened to press the first connecting portion 222 onto the second connecting portion 111 to prevent the hooking and falling off.

[0056] In other active connection embodiments, such as Figure 2 , Figure 3As shown, the first connecting portion 222 is provided with a second through hole 2221 through which the first end of the first movable rod 12 can pass. The first end of the first movable rod 12 passes through the first connecting portion 222, and the first locking portion 121 is a pin disposed on the outer circumferential surface of the first end of the first movable rod 12. The second end of the first movable rod 12 is provided with a rotating portion 122 for rotating the first movable rod 12. The rotating portion 122 is twisted, and the first locking portion 121 leaves the position where it is located when passing through the second through hole 2221 as it rotates. The first locking portion 121 moves with the first end of the first movable rod 12 and passes through the second through hole 2221. Thereafter, the first movable rod 12 is rotated by using the rotating portion 122 so that the first locking portion 121 avoids the position when passing through the second through hole 2221, that is, the first locking portion 121 rotates toward the physical part of the first connecting portion 222. In this way, when the locking handle 13 is working, the first locking portion 121 can directly abut the first connecting portion 222, thereby pressing the first connecting portion 222 against the second connecting portion 111.

[0057] The first end of the first movable rod 12 passes through the first connecting portion 222, that is, the first end of the first movable rod 12 passes through the second through hole 2221. Specifically, the second through hole 2221 includes, in addition to a main hole area through which the main body of the first movable rod 12 can pass, a secondary hole area located on one side or both sides of the main hole, and the secondary hole area can allow the first locking portion 121 to pass. More specifically, the main hole area is adapted to the shape of the main body of the first movable rod 12, and the secondary hole area is adapted to the shape of the first locking portion 121.

[0058] Furthermore, if Figure 2 , Figure 3 As shown, the locking assembly 1 further includes a first elastic member 14, which is sleeved on the first movable rod 12, one end of the first elastic member 14 abuts against the second connecting portion 111, and the other end of the first elastic member 14 applies an elastic thrust to the first movable rod 12. The first elastic member 14 is located on a side of the second connecting portion 111 away from the first connecting portion 222, and the first elastic member 14 continuously presses the first movable rod 12 or applies an elastic force to the second connecting portion 111, thereby increasing the pressure of the first locking portion 121 on the first connecting portion 222, and increasing the movement resistance of the first locking portion 121, so as to avoid or reduce the rotation of the first movable rod 12 when the locking handle 13 is turned.

[0059] Furthermore, if Figure 2 , Figure 3As shown, a first positioning groove 2222 is provided on a side of the first connecting portion 222 away from the connecting seat 11. The first positioning groove 2222 passes through the position where the second through hole 2221 is located. The rotating portion 122 is twisted, and the first locking portion 121 is screwed into the first positioning groove 2222. At the same time, under the action of the first elastic member 14, the first locking portion 121 can stably stay in the first positioning groove 2222, so that when the locking handle 13 is rotated, the first movable rod 12 or the first locking portion 121 is prevented from rotating, thereby improving the convenience of locking the first movable rod 12.

[0060] In some further embodiments of the locking assembly 1, such as Figure 2 , Figure 3 As shown, the locking assembly 1 further includes a limiting plate 15, on which a third through hole is provided for the middle portion of the first movable rod 12 to pass through, and the limiting plate 15 is arranged on a side of the second connecting portion 111 away from the adjusting member 22. Before the first locking portion 121 is assembled on the first movable rod 12, the first movable rod 12 is first passed through the third through hole so that the middle portion of the first movable rod 12 stays at the third through hole, and then the first locking portion 121 is assembled on the first end of the first movable rod 12. In this way, the main body of the first movable rod 12 can move along the third through hole, but the first locking portion 121 cannot pass through the third through hole, and in this way, the limiting plate 15 can prevent the first movable rod 12 from falling off.

[0061] In some embodiments of the angle adjustment assembly 2, such as Figure 2 , Figure 3 As shown, the sliding portion 221 is provided with a through groove 2211 arranged along the sliding direction thereof, and the through groove 2211 penetrates the sliding portion 221 , that is, the through groove 2211 is a concentric arc groove.

[0062] The angle adjustment assembly 2 further includes a quick-release locking mechanism 23 , and the quick-release locking mechanism 23 includes a quick-release head 231 and a second movable rod 232 .

[0063] The quick release head 231 is rotatably disposed on the second end of the second movable rod 232. The second movable rod 232 is penetrated through the adjustment seat 21, and the first end of the second movable rod 232 passes through the through slot 2211. The first end of the second movable rod 232 is provided with a second locking portion 2321, and the second locking portion 2321 is located on a side of the sliding portion 221 away from the quick release head 231.

[0064] The first end of the second movable rod 232 passes through the through slot 2211 until the second locking portion 2321 passes over the sliding portion 221, and then the second movable rod 232 is rotated to make the second locking portion 2321 rotate away from the through slot 2211, and finally the quick release head 231 is moved to make the second movable rod 232 move outward, and the second locking portion 2321 presses the sliding portion 221, thereby locking the sliding portion 221.

[0065] Furthermore, if Figure 3 As shown, a plurality of second positioning grooves 2212 are provided along the edge of the through groove 2211 on one side of the sliding portion 221 away from the quick release head 231. After the second locking portion 2321 rotates into the second positioning groove 2212, the resistance to movement or sliding between the second locking portion 2321 and the sliding portion 221 is increased, thereby improving the locking effect.

[0066] Specifically, the second positioning grooves 2212 are arranged at equal distances, and the specific equal distances may be equal straight-line distances or equal angular distances, for example Figure 6 As shown, the interval angle between adjacent second positioning grooves 2212 is 3°

[0067] The specific structure of the second locking portion 2321 can also be a pin. The first elastic member 14 and the second elastic member 234 are preferably coil springs.

[0068] Furthermore, if Figure 2 , Figure 3 As shown, the sliding part 221 is provided with a plurality of positioning holes 2213 arranged along the sliding direction, and the positioning holes 2213 are arranged one by one with the second positioning groove 2212. The angle adjustment assembly 2 also includes an elastic positioning member 24 for positioning before locking, and the elastic positioning member 24 is arranged on the adjustment seat 21, and the elastic positioning member 24 faces one of the positioning holes 2213. The assembly process includes adjusting the position of the adjusting member 22, temporarily fixing the adjusting member 22, and locking the adjusting member 22 with a quick release head 231. The method of temporarily fixing the adjusting member 22 includes manual temporary fixing, or temporary clamping with tools, all of which may cause movement and are less convenient. An embodiment of the utility model provides a positioning machine structure and a plurality of positioning holes 2213, wherein the plurality of positioning holes 2213 are distributed in the sliding direction, specifically, are distributed on concentric circles in the sliding direction. The elastic positioning member 24 is disposed on the adjustment seat 21 and faces the positioning hole 2213. After being rotated a fixed distance or a fixed angle, the elastic positioning member 24 can be positioned and matched with the positioning hole 2213 at the corresponding position, and can temporarily position the sliding part 221, thereby improving the convenience of angle adjustment.

[0069] The elastic positioning member 24 may specifically be a ball screw.

[0070] In some further embodiments of the angle adjustment assembly 2, as Figure 2 , Figure 3As shown, a nut groove is provided on the side of the adjustment seat 21 opposite to the quick release head 231. The second movable rod 232 passes through the adjustment seat 21 and extends into the nut groove. The quick release locking mechanism 23 also includes a gasket 233, a second elastic member 234 and a nut 235. The nut 235 is arranged in the nut groove. The nut 235 is threadedly connected with the second movable rod 232. The second elastic member 234 is arranged in the nut groove and sleeved on the second movable rod 232. The gasket 233 is sleeved on the second movable rod 232 and is located between the quick release head 231 and the adjustment seat 21. The side of the gasket 233 facing the quick release head 231 is provided with an arc groove. The nut 235 limits the position of the second movable rod 232 to prevent the second movable rod 232 from falling off. The second elastic member 234 can make the second movable rod 232 continuously subjected to the elastic action directed to the quick release head 231, thereby increasing the movement resistance or rotation resistance of the second locking portion 2321 on the sliding portion 221. The gasket 233 is a protective structure for the adjustment seat 21 , and increases the distance between the quick release head 231 and the adjustment seat 21 , thereby increasing the rotation and swing range of the quick release head 231 .

[0071] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An arc-shaped locking mechanism for connecting adjacent frames, characterized in that: The arc-shaped locking mechanism includes a locking component and an angle adjustment component; The angle adjustment assembly includes an adjustment seat and an adjustment member, wherein the adjustment seat is connected to the frame, an arc-shaped groove is provided on the adjustment seat, a first end of the adjustment member is a sliding portion, and the sliding portion is adjustably slidably arranged in the arc-shaped groove, and a second end of the adjustment member is a first connecting portion; The locking assembly is connected to the frame, and the locking assembly is locked to the first connecting portion.

2. The arc locking mechanism according to claim 1, characterized in that: The locking assembly comprises a connecting seat, a first movable rod and a locking handle; The connecting seat is provided with a second connecting portion, and the second connecting portion is provided with a first through hole through which the first end of the first movable rod can pass; A first locking portion is provided at the first end of the first movable rod, the first end of the first movable rod passes through the second connecting portion, and the first locking portion is movably connected to the first connecting portion; The locking handle is disposed on the first movable rod, and the locking handle is threadedly connected to the first movable rod; When the first locking portion is movably connected to the first connecting portion, the locking handle is rotated to drive the first movable rod away from the first connecting portion to lock the movable connection.

3. The arc locking mechanism according to claim 2, characterized in that: The first connecting portion is provided with a second through hole through which the first end of the first movable rod can pass; The first end of the first movable rod passes through the first connecting portion, and the first locking portion is a pin shaft arranged on the outer circumferential surface of the first end of the first movable rod; The second end of the first movable rod is provided with a rotating portion for rotating the first movable rod; The rotating portion is twisted, and the first locking portion rotates away from the position where the first locking portion passes through the second through hole.

4. The arc locking mechanism according to claim 3, characterized in that: The locking assembly further includes a first elastic member, which is sleeved on the first movable rod, one end of the first elastic member abuts against the second connecting portion, and the other end of the first elastic member applies an elastic thrust to the first movable rod.

5. The arc locking mechanism according to claim 4, characterized in that: A first positioning groove is provided on a side of the first connecting portion away from the connecting seat; The first positioning groove passes through the position where the second through hole is located; The rotating portion is twisted so that the first locking portion is screwed into the first positioning groove.

6. The arc locking mechanism according to claim 2, characterized in that: The locking assembly further includes a limiting plate, on which a third through hole is provided for the middle portion of the first movable rod to pass through, and the limiting plate is arranged on a side of the second connecting portion away from the adjusting member.

7. The arc locking mechanism according to claim 1, characterized in that: The sliding part is provided with a through groove arranged along the sliding direction thereof, and the through groove penetrates the sliding part; The angle adjustment assembly further comprises a quick release locking mechanism, wherein the quick release locking mechanism comprises a quick release head and a second movable rod; The quick-release head is rotatably disposed on the second end of the second movable rod; The second movable rod is penetrated through the adjustment seat, the first end of the second movable rod passes through the through slot, the first end of the second movable rod is provided with a second locking portion, and the second locking portion is located on a side of the sliding portion away from the quick release head.

8. The arc locking mechanism according to claim 7, characterized in that: A plurality of second positioning grooves are provided along the edge of the through groove on one side of the sliding portion away from the quick-release head.

9. The arc locking mechanism according to claim 8, characterized in that: The sliding part is provided with a plurality of positioning holes arranged along the sliding direction, and the positioning holes are arranged in a one-to-one correspondence with the second positioning grooves; The angle adjustment assembly further comprises an elastic positioning member for positioning before locking, wherein the elastic positioning member is arranged on the adjustment seat and faces one of the positioning holes.

10. The arc locking mechanism according to claim 7, characterized in that: A nut groove is provided on one side of the adjustment seat opposite to the quick-release head; The second movable rod passes through the adjustment seat and extends into the nut groove; The quick-release locking mechanism also includes a gasket, a second elastic member and a nut. The nut is arranged in the nut groove. The nut is threadedly connected to the second movable rod. The second elastic member is arranged in the nut groove and is sleeved on the second movable rod. The gasket is sleeved on the second movable rod and is located between the quick-release head and the adjustment seat. The gasket is provided with an arc-shaped groove on one side facing the quick-release head.

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