Ball table locking mechanism

Abstract

The utility model relates to the technical field, in particular to a ball table locking mechanism which comprises a panoramic base and a ball head which are sequentially arranged from bottom to top, and further comprises a locking outer shell and a shell folding assembly which are integrated or split, the locking shell covers the outer surfaces of the panoramic base and the ball head; the shell folding assembly is used for enabling the locking shell to deform and fold so as to lock the panoramic base and the ball head; the shell folding assembly drives the locking shell to deform and fold so as to lock the panoramic base and the ball head, and compared with an existing ball table locking mechanism, the ball table locking mechanism is simple in structure, the number of parts is greatly reduced, and therefore manufacturing cost is effectively reduced, and development of enterprises is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of photographic accessories, in particular to a ball table locking mechanism. Background Art

[0002] A camera ball head, also known as a spherical head, is a commonly used accessory for photographic equipment. It allows photographers to achieve multi-angle shooting through 360-degree rotation and tilt adjustment. This head design allows photographers to easily adjust the camera's position and angle, both horizontally and vertically, to achieve the desired shot. Furthermore, the ball head's design takes portability into consideration. Compared to other types of heads, such as three-dimensional heads, a ball head offers a significant advantage in portability because it lacks the unnecessary long adjustment handle, making it more convenient for photographers to carry and use.

[0003] The spherical pan / tilt head structure includes a mounting base with a spherical cavity opening facing upward. A spherical member is rotatably mounted within the cavity, and the edge of the cavity's opening prevents the spherical member from falling out of the cavity. The mounting base is equipped with a pusher that abuts the spherical member. This pusher can lift the spherical member upward along the centerline of the cavity's opening, ensuring that the entire edge of the cavity's opening contacts the surface of the spherical member. Furthermore, the spherical member is connected to connecting rods extending from the cavity's opening. These connecting rods allow the spherical member to rotate freely within the cavity, thereby achieving 360-degree continuously variable speed scanning.

[0004] In the existing technology, in order to ensure the locking force of the spherical part, a large number of parts need to be designed, which leads to high manufacturing costs of the spherical head and is not conducive to the development of the enterprise. Therefore, we propose a ball head locking mechanism to effectively solve the above-mentioned disadvantages. Utility Model Content

[0005] The purpose of the present utility model is to provide a table locking mechanism for solving the problems raised in the above-mentioned background technology.

[0006] The utility model is realized by the following technical solutions: a ball table locking mechanism, comprising a panoramic base and a ball head arranged in sequence from bottom to top, a concave arc surface is provided on the top of the panoramic base to fit the ball head, and further comprising:

[0007] An integrated or split locking housing, said locking housing covering the outer surfaces of the panoramic base and the ball head;

[0008] The shell retraction assembly is used to deform and retract the locking shell to lock the panoramic base and the ball head.

[0009] Optionally, the panoramic base includes a base body, an assembly column is integrally formed on the top of the base body, an inner concave arc surface is arranged on the top of the assembly column, the outer contour of the assembly column is smaller than the outer contour of the base body, and the locking shell covers the outer surface of the assembly column and the ball head.

[0010] Optionally, an annular damping grease collecting groove is formed on the upper end surface of the base body and is located at the periphery of the assembly column.

[0011] Optionally, the proximal end portion of the upper end of the integrated locking shell is provided with a first annular inner arc surface that fits the ball head, a flange is integrally formed on the upper outer ring of the assembly column, and an annular limiting groove adapted to the flange is provided in the locking shell.

[0012] Optionally, the side wall of the integrated locking shell is vertically provided with an assembly groove for completely disconnecting the locking shell, and the assembly groove is composed of a U-shaped groove and a vertical groove distributed vertically;

[0013] A first connecting block and a second connecting block are respectively provided on the outer surface of the locking shell and on both sides of the vertical groove. A connecting screw is movably passed through the first connecting block in the horizontal direction, and a first threaded hole matching the connecting screw is opened on the second connecting block.

[0014] Optionally, a non-closed annular groove is formed on the side wall of the integral locking housing along the circumferential direction;

[0015] The shell folding assembly includes a first fixing block fixed to the outer surface of the locking shell and located above the non-closed annular groove, a second fixing block fixed to the outer surface of the locking shell and located below the non-closed annular groove, a locking screw movably penetrated in the vertical direction on the first fixing block, a second threaded hole matched with the locking screw is opened on the second fixing block, and a first arc-shaped locking buckle arranged along the circumference of the locking shell is fixedly connected to the top of the locking screw;

[0016] When the locking screw is tightened, the cooperation between the locking screw and the second threaded hole drives the non-closed annular groove to close so as to lock the assembly column and the ball head.

[0017] Optionally, the side wall of the integrated locking housing is provided with a horizontal Z-shaped groove for completely disconnecting the locking housing;

[0018] The shell folding assembly includes a first mounting block fixed to the outer surface of the locking shell and located above the horizontal Z-shaped groove, the first mounting block having a tapered hole that is wider at the top and narrower at the bottom, a special-shaped screw movably inserted into the tapered hole in a vertical direction, an outer conical surface adapted to the tapered hole being integrally formed on the special-shaped screw, and a second arc-shaped locking buckle arranged along the circumference of the locking shell being fixedly connected to the top of the special-shaped screw;

[0019] A second mounting block is fixed on the outer surface of the locking housing and is located below the horizontal Z-shaped groove. A third threaded hole is provided on the second mounting block, which is matched with the special-shaped screw and staggered with the tapered hole.

[0020] When tightening the special-shaped screw, the horizontal Z-shaped slot, the special-shaped screw, the tapered hole and the third threaded hole cooperate with each other to drive the horizontal Z-shaped slot to retract up and down and left and right to lock the assembly column and the ball head.

[0021] Optionally, a second annular inner arc surface is provided at the proximal end of the upper end of the split locking shell to fit with the ball head, an outer cone structure that is wider at the top and narrower at the bottom is provided at the proximal end of the upper end of the assembly column, and an inner cone structure that is adapted to the outer cone structure is provided in the locking shell;

[0022] The split locking shell is composed of two half shells that cooperate with each other. One side of the two half shells is detachably connected to each other, and the shell folding component is arranged at the intersection of the other side of the two half shells.

[0023] Optionally, the shell folding assembly includes a tightening block fixed to the outer surface of each half shell, a tightening screw is movably provided between the two tightening blocks in the horizontal direction, a pin is threadedly connected to the tail of the tightening screw, an eccentric arc-shaped tightening buckle arranged along the circumference of the locking shell is rotatably connected to the pin, a buckle pad is fixed on the tightening block close to the eccentric arc-shaped tightening buckle, and an arc surface is provided on the surface of the buckle pad that fits the eccentric arc-shaped tightening buckle.

[0024] Compared with the prior art, the present invention provides a table locking mechanism with the following beneficial effects:

[0025] 1. The utility model drives the locking shell to deform and retract through the shell retraction component, thereby locking the panoramic base and the ball head. Compared with the existing ball table locking mechanism, the utility model has a streamlined structure and greatly reduces the number of parts, thereby effectively reducing manufacturing costs and benefiting the development of the enterprise.

[0026] 2. The locking shell designed by the utility model has two forms: integrated and split. Both forms can achieve synchronous locking of the panoramic base and the ball head. The integrated and split forms can adapt to different production conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a front view of the first embodiment of the present utility model;

[0028] Figure 2 This is a right side view of the first embodiment of the present utility model;

[0029] Figure 3 This is a schematic diagram of the internal structure of the first embodiment of the present utility model;

[0030] Figure 4 This is an exploded view of the first embodiment of the present utility model;

[0031] Figure 5 This is a schematic structural diagram of the second embodiment of the present utility model;

[0032] Figure 6 This is a rear view of the second embodiment of the present invention.

[0033] Figure 7 This is a top view of the second embodiment of the present utility model;

[0034] Figure 8 This is a front view of the third embodiment of the present invention.

[0035] Figure 9 This is a right side view of the third embodiment of the present utility model;

[0036] Figure 10 This is a schematic diagram of the internal structure of Example 3 of the present utility model.

[0037] Figure 11 This is a top view of the third embodiment of the present utility model;

[0038] Figure 12 This is an exploded view of the third embodiment of the present invention.

[0039] In the figure: 1, panoramic base; 101, base body; 102, assembly column; 103, annular damping grease collection groove; 2, ball head; 3, locking shell; 4, shell folding assembly; 401, first fixing block; 402, second fixing block; 403, locking screw; 404, first arc-shaped locking buckle; 405, first mounting block; 406, tapered hole; 407, special-shaped screw; 408, second arc-shaped locking buckle; 409, first Second mounting block; 4010, tightening block; 4011, tightening screw; 4012, pin; 4013, eccentric arc-shaped tightening buckle; 4014, buckle pad; 5, flange; 6, annular limit groove; 7, assembly groove; 701, U-shaped groove; 702, vertical groove; 8, first connecting block; 9, second connecting block; 10, connecting screw; 11, non-closed annular groove; 12, horizontal Z-shaped groove; 13, outer cone structure; 14, inner cone structure. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] Example 1: Please refer to Figures 1 to 4 A ball table locking mechanism includes a panoramic base 1 and a ball head 2 arranged in sequence from bottom to top. The top of the panoramic base 1 is provided with a concave arc surface that fits the ball head 2. The ball head 3 can rotate on the concave arc surface to adjust the position and angle of the camera. Specifically, Figure 2 and Figure 3 As shown, the panoramic base 1 includes a base body 101, with an integrally formed mounting post 102 at the top of the base body 101. A concave arcuate surface is provided at the top of the mounting post 102. The outer contour of the mounting post 102 is smaller than that of the base body 101. A locking housing 3 covers the outer surfaces of the mounting post 102 and the ball head 2. The upper and lower openings of the locking housing 3 have smaller diameters than the ball head 2 and mounting post 102, respectively, to prevent the ball head 2 and mounting post 102 from falling out of the locking housing 3.

[0042] Preferably, during the production process, an appropriate amount of damping grease is applied between the panoramic base 1 and the locking shell 3, so that the panoramic base 1 has a certain amount of damping when rotating, thereby improving the user experience. However, the damping grease has a certain fluidity, and sometimes the damping grease will overflow from the surface of the table due to the tilt of the table. Therefore, if Figure 3 As shown, the upper end surface of the base body 101 is provided with an annular damping grease collecting groove 103 located at the periphery of the assembly column 102 for collecting the damping grease flowing down to prevent the damping grease from overflowing the table surface.

[0043] This embodiment also includes: an integrated or split locking shell 3, which is covered on the outer surface of the panoramic base 1 and the ball head 2 and is used to lock the panoramic base 1 and the ball head 2; a shell retraction component 4, which is used to deform and retract the locking shell 3 to lock the panoramic base 1 and the ball head 2. Compared with the existing ball table locking mechanism, this embodiment has the advantages of a simplified structure, a small number of parts and a low manufacturing cost.

[0044] Specifically, if Figure 3 As shown, the upper proximal end of the integral locking housing 3 is provided with a first annular inner arc surface that fits with the ball head 2, the upper outer ring of the assembly post 102 is integrally formed with a flange 5, and an annular limiting groove 6 that adapts to the flange 5 is provided in the locking housing 3. When the integral locking housing 3 is deformed and contracted, the ball head 3 can be driven downward by the first annular inner arc surface, and the assembly post 102 can be driven upward by the cooperation of the flange 5 and the annular limiting groove 6, thereby locking the ball head 2 and the assembly post 102. Further, as Figure 2As shown, the sidewall of the integrated locking housing 3 is vertically defined with an assembly slot 7 that completely disconnects the locking housing 3. The assembly slot 7 comprises a U-shaped slot 701 and a vertical slot 702 extending vertically. During use, the user props the locking housing 3 open via the U-shaped slot 701 to insert the assembly post 102 and ball head 2 into the locking housing 3. A first connecting block 8 and a second connecting block 9 are respectively provided on the outer surface of the locking housing 3, on either side of the vertical slot 702. A connecting screw 10 is movably provided through the first connecting block 8 in a horizontal direction, and a first threaded hole is provided in the second connecting block 9 to mate with the connecting screw 10. After inserting the assembly post 102 and ball head 2 into the locking housing 3, the connecting screw 10 can be tightened to close the vertical slot 702, thereby preventing the assembly post 102 and ball head 2 from being removed from the locking housing 3.

[0045] In this embodiment, if Figure 4 As shown, the side wall of the integral locking shell 3 is provided with a non-closed annular groove 11 along the circumferential direction. The non-closed annular groove 11 avoids the assembly groove 7 and provides a deformation space for the locking shell 3. In this form, Figure 1 and Figure 4 As shown, the housing folding assembly 4 includes a first fixing block 401 fixed to the outer surface of the locking housing 3 and located above the non-enclosed annular groove 11. A second fixing block 402 is fixed to the outer surface of the locking housing 3 and located below the non-enclosed annular groove 11. A locking screw 403 is vertically movably inserted through the first fixing block 401. A second threaded hole is formed in the second fixing block 402 to cooperate with the locking screw 403. A first arc-shaped locking trigger 404, which is arranged along the circumference of the locking housing 3, is fixedly connected to the top of the locking screw 403. When the locking screw 403 is tightened, the non-enclosed annular groove 11 is folded through the cooperation between the locking screw 403 and the second threaded hole, thereby locking the assembly column 102 and the ball head 2.

[0046] In this form, the main purpose of the U-shaped groove 701 and the vertical groove 702 is to assemble the ball head 2 and the assembly column 102 into the locking shell 3; the main purpose of the non-closed annular groove 11 is to provide deformation space for the locking shell 3, so that the locking shell 3 can be folded up and down, thereby locking the ball head 2 and the assembly column 102 at the same time.

[0047] Example 2: Please refer to Figures 5 to 7 The difference between this embodiment and the first embodiment is that:

[0048] like Figure 5 As shown, the side wall of the integrated locking shell 3 is provided with a horizontal Z-shaped groove 12 that completely separates the locking shell 3, providing deformation space for the locking shell 3 so that the locking shell 3 can be folded up and down and left and right. Figure 5 and Figure 7As shown, the shell folding assembly 4 includes a first mounting block 405 fixed to the outer surface of the locking shell 3 and located above the horizontal Z-shaped groove 12, and a tapered hole 406 that is wide at the top and narrow at the bottom is penetrated by the first mounting block 405, and a special-shaped screw 407 is movably inserted in the tapered hole 406 along the vertical direction, and an outer conical surface that is adapted to the tapered hole 406 is integrally formed on the special-shaped screw 407, and a second arc-shaped locking buckle 408 that is circumferentially arranged along the locking shell 3 is fixedly connected to the top of the special-shaped screw 407; a second mounting block 409 located below the horizontal Z-shaped groove 12 is fixed on the outer surface of the locking shell 3, and a third threaded hole that cooperates with the special-shaped screw 407 and is staggered with the tapered hole 406 is opened on the second mounting block 409. When tightening the special-shaped screw 407, the horizontal Z-shaped slot 12 is driven to retract up and down and left and right through the mutual cooperation among the special-shaped screw 407, the tapered hole 406 and the third threaded hole to lock the assembly column 102 and the ball head 2.

[0049] In this embodiment, it should be noted that Figure 6 As shown, the locking housing 3 is provided with a structure similar to the U-shaped groove 701 in the first embodiment on the side away from the horizontal Z-shaped groove 12, which facilitates the opening of the locking housing 3 and the insertion of the ball head 2 and the mounting post 102 into the locking housing 3. Since the tapered hole 406 is offset from the third threaded hole by a certain distance, and the special-shaped screw 407 has an outer conical surface, the process of tightening the special-shaped screw 407 can drive the locking housing 3 to retract vertically and horizontally, thereby achieving a locking effect.

[0050] The locking shell 3 used in this embodiment and embodiment 1 are both one-piece structures. The difference is that embodiment 1 provides the one-piece locking shell 3 with a deformation space for folding up and down through a non-closed annular groove 11; this embodiment provides the one-piece locking shell 3 with a deformation space for folding up and down and folding left and right through a horizontal Z-shaped groove 12.

[0051] Example 3: Please refer to Figures 8 to 12 The difference between this embodiment and the first and second embodiments is that:

[0052] like Figure 10 As shown, the split locking housing 3 has a second annular inner arc surface at the proximal upper end thereof, which mates with the ball head 2. An outer conical structure 13, wider at the top and narrower at the bottom, is provided at the proximal upper end of the mounting post 102. An inner conical structure 14, which mates with the outer conical structure 13, is provided within the locking housing 3. The split locking housing 3 is composed of two mating half shells, one side of which is detachably connected to the other. The housing retraction assembly 4 is provided at the other junction of the two half shells.

[0053] In this embodiment, it should be noted that Figure 8As shown, the detachable connection structure between the two half-shells is essentially the same as the U-shaped groove 701, vertical groove 702, and connecting screw 10 in the first embodiment. During assembly, the ball head 2 and the mounting post 102 are placed between the two half-shells, and then the two half-shells are secured together by locking the detachable connection structure on one side of the outer shell 3. Furthermore, when the two half-shells are pressed against each other, the second annular inner curved surface drives the ball head 2 downward, while the outer conical structure 13 and the inner conical structure 14 cooperate to drive the mounting post 102 upward, thereby locking the ball head 2 and the mounting post 102.

[0054] In this embodiment, if Figure 11 and Figure 12 As shown, the shell folding assembly 4 includes a tightening block 4010 fixed to the outer surface of each half shell. A tightening screw 4011 is movably provided horizontally between the two tightening blocks 4010. A pin 4012 is threadedly connected to the tail of the tightening screw 4011. An eccentric arc-shaped tightening lever 4013, which is arranged along the circumference of the locking shell 3, is rotatably connected to the pin 4012. The eccentric arc-shaped tightening lever 4013 can be adjusted in tension by cooperating with the tightening screw 4011 and the pin 4012. A lever pad 4014 is fixed to the tightening block 4010 near the eccentric arc-shaped tightening lever 4013. The surface of the lever pad 4014 has an arc surface that mates with the eccentric arc-shaped tightening lever 4013. The eccentric structure is used to achieve left and right tightening of the two half shells. When tightening the tightening screw 4011 , the two half shells are moved together to lock the assembly column 102 and the ball head 2 through the cooperation of the eccentric arc-shaped tightening buckle 4013 , the buckle pad 4014 , the pin 4012 and the tightening screw 4011 .

[0055] The present utility model provides three forms of locking mechanisms: Form 1, an integrated locking shell 3, which utilizes the cooperation of the non-closed annular groove 11 and the shell retraction component 4 to allow the locking shell 3 to be retracted up and down to lock the panoramic base 1 and the ball head 2. Form 2, an integrated locking shell 3, which utilizes the cooperation of the horizontal Z-shaped groove 12 and the shell retraction component 4 to allow the locking shell 3 to be retracted up and down and left and right to lock the panoramic base 1 and the ball head 2. Form 3, a split locking shell 3, which adopts an eccentric structure to achieve left and right tightening of the two half shells to lock the panoramic base 1 and the ball head 2. All three forms have a streamlined structure, a small number of parts, and can adapt to different production conditions.

[0056] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0057] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A table locking mechanism, comprising a panoramic base (1) and a ball head (2) arranged in sequence from bottom to top, wherein a concave arc surface is provided on the top of the panoramic base (1) to fit the ball head (2), and characterized in that: Also includes: An integrated or split locking shell (3), the locking shell (3) covering the outer surfaces of the panoramic base (1) and the ball head (2); The shell retraction assembly (4) is used to deform and retract the locking shell (3) to lock the panoramic base (1) and the ball head (2).

2. A table locking mechanism according to claim 1, characterized in that: The panoramic base (1) comprises a base body (101), an assembly column (102) is integrally formed on the top of the base body (101), an inner concave arc surface is provided on the top of the assembly column (102), the outer contour of the assembly column (102) is smaller than the outer contour of the base body (101), and a locking shell (3) is covered on the outer surface of the assembly column (102) and the ball head (2).

3. The table locking mechanism according to claim 2, characterized in that: The upper end surface of the base body (101) is provided with an annular damping grease collecting groove (103) located at the periphery of the assembly column (102).

4. The table locking mechanism according to claim 2, characterized in that: The upper proximal end of the integrated locking shell (3) is provided with a first annular inner arc surface that fits with the ball head (2), a flange (5) is integrally formed on the upper outer ring of the assembly column (102), and an annular limiting groove (6) adapted to the flange (5) is provided in the locking shell (3).

5. The table locking mechanism according to claim 4, characterized in that: The side wall of the integrated locking shell (3) is provided with an assembly groove (7) vertically for completely disconnecting the locking shell (3), and the assembly groove (7) is composed of a U-shaped groove (701) and a vertical groove (702) distributed vertically. A first connecting block (8) and a second connecting block (9) are respectively provided on the outer surface of the locking housing (3) and on both sides of the vertical groove (702); a connecting screw (10) is movably provided on the first connecting block (8) in a horizontal direction, and a first threaded hole matching the connecting screw (10) is provided on the second connecting block (9).

6. The table locking mechanism according to claim 4, characterized in that: A non-enclosed annular groove (11) is formed on the side wall of the integrated locking housing (3) along the circumferential direction; The shell folding assembly (4) comprises a first fixing block (401) fixed on the outer surface of the locking shell (3) and located above the non-closed annular groove (11); a second fixing block (402) located below the non-closed annular groove (11) is fixed on the outer surface of the locking shell (3); a locking screw (403) is movably inserted into the first fixing block (401) in a vertical direction; a second threaded hole matching the locking screw (403) is provided in the second fixing block (402); and a first arc-shaped locking buckle (404) arranged along the circumference of the locking shell (3) is fixedly connected to the top of the locking screw (403); When the locking screw (403) is tightened, the cooperation between the locking screw (403) and the second threaded hole drives the non-closed annular groove (11) to close to lock the assembly column (102) and the ball head (2).

7. The table locking mechanism according to claim 4, characterized in that: The side wall of the integrated locking shell (3) is provided with a horizontal Z-shaped groove (12) for completely disconnecting the locking shell (3); The shell folding assembly (4) includes a first mounting block (405) fixed on the outer surface of the locking shell (3) and located above the horizontal Z-shaped groove (12); a tapered hole (406) that is wider at the top and narrower at the bottom is passed through the first mounting block (405); a special-shaped screw (407) is movably inserted into the tapered hole (406) in a vertical direction; an outer conical surface that is adapted to the tapered hole (406) is integrally formed on the special-shaped screw (407); and a second arc-shaped locking buckle (408) that is arranged along the circumference of the locking shell (3) is fixedly connected to the top of the special-shaped screw (407); A second mounting block (409) located below the horizontal Z-shaped groove (12) is fixed on the outer surface of the locking housing (3), and a third threaded hole is provided on the second mounting block (409) that matches the special-shaped screw (407) and is staggered with the tapered hole (406); When the special-shaped screw (407) is tightened, the horizontal Z-shaped groove (12), the special-shaped screw (407), the tapered hole (406) and the third threaded hole cooperate with each other, driving the horizontal Z-shaped groove (12) to be folded up and down and left and right, thereby locking the assembly column (102) and the ball head (2).

8. The table locking mechanism according to claim 2, characterized in that: The upper proximal portion of the split locking housing (3) is provided with a second annular inner arc surface that fits with the ball head (2); the upper proximal portion of the assembly column (102) is provided with an outer cone structure (13) that is wide at the top and narrow at the bottom; and the locking housing (3) is provided with an inner cone structure (14) that is adapted to the outer cone structure (13); The split locking shell (3) is composed of two half shells that cooperate with each other, one side of the two half shells is detachably connected to each other, and the shell folding component (4) is arranged at the intersection of the other side of the two half shells.

9. The table locking mechanism according to claim 8, characterized in that: The shell folding assembly (4) comprises a tightening block (4010) fixed on the outer surface of each half shell, a tightening screw (4011) is movably provided between the two tightening blocks (4010) in the horizontal direction, a pin (4012) is threadedly connected to the tail of the tightening screw (4011), an eccentric arc-shaped tightening buckle (4013) arranged along the circumference of the locking shell (3) is rotatably connected to the pin (4012), a buckle pad (4014) is fixed on the tightening block (4010) close to the eccentric arc-shaped tightening buckle (4013), and a curved surface that fits the eccentric arc-shaped tightening buckle (4013) is provided on the surface of the buckle pad (4014).

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