Buckle structure convenient to disassemble and assemble

Abstract

The utility model relates to the technical field of buckles, and discloses a buckle structure convenient to disassemble and assemble, which comprises a first clamping piece and a second clamping piece which are matched with each other, the first clamping piece comprises a first disc, a first limiting ring and a first positioning plate, and the first limiting ring and the first positioning plate are both arranged on the upper end face of the first disc; the first limiting ring is arranged on the periphery of the first positioning plate, a first limiting groove is formed by the first limiting ring and the peripheral edge of the first disc, a first positioning cavity is formed between the first limiting ring and the first positioning plate, and a positioning hole is formed in the middle of the first positioning plate. Relative movement of the two clamping pieces is limited from multiple dimensions, tight connection of multiple sets of mutually-matched components is achieved, connection stability is greatly improved, the possibility that buckles are loosened under complex working conditions is reduced, connection reliability is ensured, products are more stable in the using process, meanwhile, disassembly and assembly are convenient, operation difficulty is reduced, and production efficiency is improved. The dismounting time is saved, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of snap-fit ​​technology, specifically a snap-fit ​​structure that is easy to assemble and disassemble. Background Technology

[0002] A snap fastener is a fastener that enables the quick connection and separation of two or more components through a mechanical structure. It is widely used in electronic equipment, furniture, automotive parts, industrial equipment and other fields. Common snap fastener types include pin type, spring plate type, ball head type and so on.

[0003] While traditional snap-fit ​​fasteners have played an important role in simplifying the assembly process, their design still has some shortcomings. Their structure is too simple, mostly relying on a single locking element (such as a single spring plate or a simple claw) to provide locking force. During equipment operation, they may easily loosen under vibration, impact, or long-term load, making it difficult to maintain a stable connection. Loosening may lead to problems such as poor contact. Moreover, using spring plates or claws for locking requires a large amount of external force to assist in disassembly and assembly, which is time-consuming and laborious, and inconvenient for actual operation and use. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a snap-fit ​​structure that is easy to assemble and disassemble.

[0005] This utility model proposes a snap-fit ​​structure that is easy to assemble and disassemble, comprising a first snap-fit ​​component and a second snap-fit ​​component that cooperate with each other. The first snap-fit ​​component includes a first disc, a first limiting ring, and a first positioning plate. The first limiting ring and the first positioning plate are both installed on the upper end face of the first disc, and the first limiting ring is located on the periphery of the first positioning plate. The first limiting ring and the outer peripheral edge of the first disc form a first limiting groove, and a first positioning cavity is formed between the first limiting ring and the first positioning plate. A positioning hole is opened in the middle of the first positioning plate. The second snap-fit ​​component includes a second disc, a second limiting ring, and a second positioning plate. Position plate and positioning post, second limiting ring and second positioning plate are both installed on the lower end face of second disk, second limiting ring is set on the periphery of second positioning plate and a second limiting groove is formed between the two, second positioning plate has a second positioning cavity in the center and positioning post is installed at the center of second positioning cavity; second limiting ring corresponds to and is adapted to first limiting groove, second positioning plate corresponds to and is adapted to first positioning cavity, positioning post corresponds to and is adapted to positioning hole, second limiting groove corresponds to and is adapted to first limiting ring, second positioning cavity corresponds to and is adapted to first positioning plate;

[0006] The first limiting ring forms a first limiting groove with the edge of the first disk on its outer periphery, which is used to cooperate with the corresponding structure of the second card to limit the position. Its interior forms a first positioning cavity with the first positioning plate, which plays a positioning role. The positioning hole in the middle of the first positioning plate cooperates with the positioning post of the second card to further accurately determine the relative position of the two cards.

[0007] The second limiting groove between the second limiting ring and the second positioning plate cooperates with the first limiting ring to enhance connection stability. The second positioning cavity at the center of the second positioning plate cooperates with the first positioning plate for positioning. The positioning post is installed at the center of the second positioning cavity and inserted into the positioning hole of the first positioning plate to achieve precise positioning.

[0008] These interlocking structures position and limit the two clips from multiple directions and dimensions, making the connection more secure. Compared with traditional single-locking clips, this greatly reduces the risk of loosening under vibration, impact, and other conditions. In practical applications, such as in the connection of internal components in electronic devices, this multi-structure interlocking clip can ensure that the components maintain a stable connection during device operation, avoiding problems such as poor contact caused by loosening.

[0009] As a further optimized solution of this utility model, the outer periphery of the first limiting ring is provided with a plurality of circumferentially evenly distributed limiting holes. The limiting holes are U-shaped, and the openings of the limiting holes are connected to the first limiting groove. The lower end face of the second disk is engaged with the limiting holes.

[0010] The U-shaped limiting holes on the outer circumference of the first limiting ring are evenly distributed on its circumference and the openings are connected to the first limiting groove. The lower end face of the second disc engages with the limiting holes. This design further increases the connection points between the two clips. During installation, the corresponding part of the second disc can be directly embedded in the limiting holes to provide additional limiting function and prevent the two clips from rotating relative to each other in the circumferential direction.

[0011] In some mechanical devices that require high connection stability, such as the connection of some components inside a car engine, this circumferential limiting design can effectively prevent connection failure caused by component rotation, ensuring the normal operation of the mechanical device. Moreover, the U-shaped limiting hole design makes the snap-fit ​​process relatively easy. Installation can be completed without complicated operations, and disassembly can be separated by overcoming only a small amount of resistance, which is convenient and quick.

[0012] As a further optimized solution of this utility model, a limiting block is installed on the lower end face of the second disk, which is located in the second limiting groove and is adapted to the limiting hole. There are multiple limiting blocks, which are evenly distributed along the outer side wall of the second limiting groove. The multiple limiting blocks correspond one-to-one with the multiple limiting holes and are snapped together.

[0013] The limiting blocks on the lower end face of the second disc correspond one-to-one with the limiting holes on the first limiting ring. These limiting blocks are installed in the second limiting groove and are evenly distributed along its outer circumferential wall. During installation, the limiting blocks can be accurately inserted into the limiting holes, further enhancing the connection strength and stability between the two clips.

[0014] Compared to relying solely on the cooperation of the first limiting ring and the second limiting groove, the engagement of the limiting block and the limiting hole increases the reliability of the connection. In practical applications, such as in the splicing structure of furniture, when the furniture is subjected to external force pulling or shaking, the cooperation of these limiting blocks and limiting holes can effectively prevent the splicing parts from loosening, extend the service life of the furniture, and at the same time, it will not increase the difficulty of disassembly and assembly, maintaining the convenience of operation.

[0015] As a further optimization of this utility model, the upper end face of the first limiting ring is provided with a plurality of positioning grooves evenly distributed along its circumference. The positioning grooves are triangular and are engaged with the lower end face of the second disk.

[0016] The triangular positioning grooves on the upper surface of the first limiting ring are evenly distributed along the circumference. The triangular design gives the positioning grooves good guidance and stability. When installing the second clip, the lower surface of the second disc can slide smoothly into the positioning groove along the inclined side, which plays a good guiding role and facilitates quick positioning.

[0017] Furthermore, after the triangular positioning groove engages with the lower end face of the second disc, it can restrict the horizontal movement of the second clamping component to a certain extent, further improving the stability of the connection. In the assembly of electronic product casings, this positioning groove design can help workers install casings more quickly and accurately, improve production efficiency, and at the same time ensure that the casing will not easily shift after installation, thus guaranteeing the appearance and performance of the product.

[0018] As a further optimized solution of this utility model, a positioning block is installed on the lower end face of the second disc, which is adapted to the other positioning slots in the second limiting slot. There are multiple positioning blocks and they are evenly distributed in the circumference. The multiple positioning blocks correspond one-to-one with the multiple positioning slots and are snapped together.

[0019] During installation, the positioning block can accurately engage with the positioning slot, further enhancing the horizontal positioning effect of the two clamping parts. In conjunction with the positioning slot, the positioning block can better restrict the rotation and displacement of the second clamping part on the horizontal plane, improving the accuracy and stability of the connection. In the connection of components of some precision instruments, this precise positioning structure can ensure that each component of the instrument is installed in place, guaranteeing the normal operation and measurement accuracy of the instrument. At the same time, due to the cooperation between the positioning block and the positioning slot, the components will not be damaged during disassembly, facilitating subsequent maintenance and repair work.

[0020] As a further optimized solution of this utility model, the upper end face of the first disc is provided with multiple positioning holes, which are evenly distributed circumferentially in the first limiting groove. The lower end face of the second limiting ring is provided with multiple positioning rods that are adapted to the positioning holes. The multiple positioning rods correspond one-to-one with the multiple positioning holes and are snapped together.

[0021] During installation, the positioning rod is inserted into the positioning hole, which not only achieves the initial vertical positioning of the two clamps, but also prevents the second clamp from shifting during installation. This positioning method increases the reliability of the connection and makes the two clamps fit more tightly. In practical applications, such as in the connection of equipment components that require frequent disassembly and installation, the fit between the positioning rod and the positioning hole can quickly and accurately complete the connection, reduce installation time, and improve work efficiency. At the same time, during equipment operation, this fit can effectively prevent the clamps from separating due to vibration and other factors, ensuring the normal operation of the equipment.

[0022] As a further optimized solution of this utility model, the first limiting ring, the second limiting ring, and the second positioning plate are all annular parts, and the first limiting groove, the first positioning cavity, and the second limiting groove are all annular grooves.

[0023] This ring structure allows the two clamps to be evenly stressed in the circumferential direction when connected, avoiding stress concentration. In actual use, the ring structure can better disperse the force regardless of the direction of the external force, enhancing the stability of the connection. For example, in the connection of components in some rotating equipment, the ring-shaped limiting and positioning structure can ensure that the connection between the clamps remains stable during the rotation of the equipment, and will not fail due to excessive local stress. Moreover, the design of the ring structure also makes the installation of the clamps more convenient, without the need for precise alignment in a specific direction, reducing the difficulty of installation.

[0024] As a further optimization of this utility model, the first positioning plate is a regular polygon, and the second positioning cavity is a regular polygonal groove that is adapted to the first positioning plate.

[0025] The sides and corners of a regular polygon have specific geometric shapes and angles, which allows two clips to be positioned not only in the circumferential direction but also to be precisely matched in terms of angles when they are mated. This precise positioning method ensures that the relative positions of the two clips are fixed when they are connected, avoiding misalignment or rotational deviation. In some fields where the installation accuracy of components is extremely high, such as the connection of aerospace parts, the positioning structure of a regular polygon can ensure the installation accuracy of components and ensure the normal operation of the entire system. At the same time, the design of a regular polygon also increases the stability of the connection. The contact of multiple sides can better withstand external forces and prevent relative rotation between the clips.

[0026] As a further optimization of this utility model, the outer wall of the positioning post has protrusions, the number of protrusions is multiple and evenly distributed in the circumference to form a wave-shaped annular structure, and the positioning hole is a wave-shaped annular groove adapted to the positioning post.

[0027] The wavy annular protrusions on the outer wall of the positioning post and the wavy annular grooves of the positioning hole are matched. This special structural design increases the friction and contact area between the positioning post and the positioning hole. During installation, the wavy structure can better guide the positioning post into the positioning hole, playing a self-centering role. Moreover, the cooperation of multiple protrusions and grooves allows the two clips to better resist axial and circumferential forces after connection, preventing the clips from loosening or shifting after connection. In some applications with extremely high requirements for connection stability, such as the connection of key components of automobile engines, this wavy positioning structure can effectively improve the reliability of the connection, ensuring that the engine works normally in high temperature, high pressure, and high vibration environments. At the same time, the design of the wavy structure does not increase the difficulty of disassembly and assembly, and still maintains convenient operation characteristics.

[0028] As a further optimization of this utility model, the lower middle part of the first disk extends downward to form a base for connecting with an external workpiece, and the upper end of the second disk is equipped with a connector for connecting with an external workpiece.

[0029] The base at the lower end of the first disc and the connector at the upper end of the second disc are key components for connecting the snap-fit ​​structure to the external workpiece. The design of the base and connector can be customized according to the specific needs of the external workpiece, such as threaded connection, welded connection, etc. Through these two components, the snap-fit ​​structure can be easily connected to various different workpieces, expanding the application range of the snap-fit. In actual production, whether it is a small electronic device component or a large mechanical structural component, it can be connected to the snap-fit ​​structure through a suitable base and connector to achieve fast and stable assembly. This design makes the snap-fit ​​structure more versatile and improves its application value in different fields.

[0030] The snap-fit ​​structure for easy assembly and disassembly proposed in this utility model has the following beneficial effects:

[0031] (i) Through the mutual cooperation of the first limiting ring and the second limiting groove, the second limiting ring and the first limiting groove, the positioning post and the positioning hole, the second positioning plate and the first positioning cavity, and the second positioning cavity and the first positioning plate, multiple positioning and limiting structures are formed, which restrict the relative movement of the two clamps from multiple dimensions, realize the tight connection of multiple sets of mutually compatible components, greatly improve the stability of the connection, reduce the possibility of the buckle loosening under complex working conditions, ensure the reliability of the connection, and make the product more stable during use;

[0032] (ii) When installing this buckle, simply align the second clip with the first clip so that each matching part can be inserted into the corresponding part to achieve quick positioning and fixation. The operation is simple and quick. When disassembling, there is no need to use complicated tools or apply excessive external force. Just gently separate the interlocking parts. This reduces the difficulty of operation, saves disassembly and assembly time, and improves work efficiency.

[0033] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the assembly cross-sectional structure of the first and second clips of this utility model;

[0035] Figure 2 This is a top view of the structure of the first card component of this utility model;

[0036] Figure 3 This is a bottom view of the structure of the second card of this utility model. Attached image description:

[0038] 11. First disc; 12. First limiting ring; 13. First positioning plate; 14. First limiting groove; 15. First positioning cavity; 16. Positioning hole; 17. Limiting hole; 18. Positioning groove; 19. Positioning circular hole; 101. Base;

[0039] 21. Second disc; 22. Second limiting ring; 23. Second positioning plate; 24. Positioning post; 25. Second limiting groove; 26. Second positioning cavity; 27. Limiting block; 28. Positioning block; 29. ​​Positioning rod; 201. Connecting piece. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols 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 utility model, and should not be construed as limiting this utility model.

[0041] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] In the assembly process of various products, the performance of the snap-fit ​​structure has a significant impact on the product's stability and ease of use. This utility model's easy-to-assemble and disassemble snap-fit ​​structure addresses the shortcomings of traditional snap-fits in terms of connection stability and ease of assembly and disassembly. Through innovative structural design, it achieves a more reliable connection and more convenient operation. Its specific implementation method is as follows:

[0043] like Figures 1-3 As shown, the snap-fit ​​structure consists of a first snap-fit ​​component and a second snap-fit ​​component that cooperate with each other;

[0044] The first clamping component includes a first disc 11, on the upper surface of which a first limiting ring 12 and a first positioning plate 13 are mounted. The first limiting ring 12 is located around the first positioning plate 13, forming a first limiting groove 14 with the outer peripheral edge of the first disc 11, and forming a first positioning cavity 15 with the first positioning plate 13. A positioning hole 16 is opened in the middle of the first positioning plate 13. The second clamping component includes a second disc 21, on the lower surface of which a second limiting ring 22, a second positioning plate 23 and a positioning post 24 are mounted. The second limiting ring 22 is around the second positioning plate 23, and the two form a second limiting groove 25. A second positioning cavity 26 is opened in the center of the second positioning plate 23, and the positioning post 24 is installed in the center of the second positioning cavity 26.

[0045] In practical applications, these structures work together to play a crucial role. For example, when connecting internal components of electronic devices, the second limiting ring 22 and the first limiting groove 14 are matched to limit the two clips from the outer periphery, preventing them from excessively displacing in the horizontal direction. The second positioning plate 23 and the first positioning cavity 15 cooperate to further determine their relative positions in the radial direction. The positioning post 24 is inserted into the positioning hole 16 to achieve precise axial positioning, ensuring the accuracy of the connection between the two clips. The cooperation between the second limiting groove 25 and the first limiting ring 12, as well as the corresponding adaptation between the second positioning cavity 26 and the first positioning plate 13, also enhance the stability of the connection from different dimensions, reducing the risk of the clips loosening under vibration, impact, and other conditions.

[0046] To further enhance connection stability, such as Figure 2As shown, the outer periphery of the first limiting ring 12 is provided with a plurality of circumferentially evenly distributed U-shaped limiting holes 17, the openings of which are connected to the first limiting groove 14, as shown. Figure 3 As shown, the lower end face of the second disc 21 is equipped with a limiting block 27 that matches the limiting hole 17. There are multiple limiting blocks 27 and they are evenly distributed along the outer side wall of the second limiting groove 25. They correspond one-to-one with the limiting hole 17 and are snapped together. In the connection of internal parts of an automobile engine, this design can effectively prevent the parts from rotating relative to each other during operation and ensure the normal operation of the mechanical device.

[0047] like Figure 2 As shown, the upper end face of the first limiting ring 12 is also provided with a plurality of triangular positioning grooves 18 evenly distributed along its circumference, such as... Figure 3 As shown, a positioning block 28 is installed on the lower end face of the second disk 21, which is located in the second limiting groove 25 and is adapted to the positioning groove 18. Multiple positioning blocks 28 correspond one-to-one with multiple positioning grooves 18 and are snapped together. When assembling the electronic product casing, the triangular positioning groove 18 can provide good guidance for the installation of the second disk 21, which facilitates quick positioning. At the same time, the positioning block 28 cooperates with the positioning groove 18 to restrict the movement of the second clip in the horizontal direction and improve the stability of the connection.

[0048] like Figure 2 As shown, multiple positioning holes 19 are evenly distributed circumferentially within the first limiting groove 14 on the upper end surface of the first disk 11, such as... Figure 3 As shown, a positioning rod 29 that matches the positioning hole 19 is installed on the lower end face of the second limiting ring 22. Multiple positioning rods 29 correspond one-to-one with multiple positioning holes 19 and are snapped together. In the connection of some equipment components that need to be frequently disassembled and installed, this structure can achieve quick positioning during installation, prevent the second clamp from shifting, and effectively prevent the clamp from separating due to vibration when the equipment is running.

[0049] like Figure 2 and Figure 3 As shown, the first limiting ring 12, the second limiting ring 22, and the second positioning plate 23 are designed as annular components, and the first limiting groove 14, the first positioning cavity 15, and the second limiting groove 25 are designed as annular grooves. In the scenario of connecting components of rotating equipment, this annular structure can make the two clamps evenly stressed in the circumferential direction, avoid stress concentration, ensure stable connection during equipment rotation, and prevent failure due to excessive local stress.

[0050] like Figure 2 and Figure 3As shown, the first positioning plate 13 is designed as a regular polygon, and the second positioning cavity 26 is a regular polygonal groove that is adapted to it. In fields such as aerospace component connection where high precision is required, the regular polygonal design can ensure that the angles of the two clamps are precisely matched when connected, avoiding misalignment or rotational deviation, ensuring the normal operation of the entire system. At the same time, the contact of multiple sides also enhances the stability of the connection and can better withstand external forces.

[0051] like Figure 2 and Figure 3 As shown, the outer wall of the positioning post 24 has multiple circumferentially evenly distributed protrusions, forming a wave-shaped annular structure. The positioning hole 16 is a wave-shaped annular groove that is adapted to it. In the connection of key components of automobile engines, this special structure increases the friction and contact area between the positioning post 24 and the positioning hole 16, plays a self-centering role during installation, and can effectively resist axial and circumferential forces after connection, preventing the clamps from loosening or shifting.

[0052] like Figure 1 As shown, the lower middle part of the first disk 11 extends downward to form a base 101, and the upper end of the second disk 21 is equipped with a connector 201. In actual production, whether it is a small electronic device component or a large mechanical structural component, the base 101 and the connector 201 can be designed in different forms such as threaded connection or welded connection according to specific needs, so as to facilitate connection with the snap-fit ​​structure, expand the application range of the snap-fit, and improve its versatility.

[0053] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A buckle structure convenient to disassemble, comprising a first clamping member and a second clamping member which are matched with each other, characterized in that: the first clamping member comprises a first disc (11) and a first limiting ring (12) and a first positioning plate (13) which are installed on the upper end surface of the first disc (11), the first limiting ring (12) and the outer peripheral edge of the first disc (11) form a first limiting groove (14), the first limiting ring (12) is arranged on the outer periphery of the first positioning plate (13) to form a first positioning cavity (15), and the middle part of the first positioning plate (13) is provided with a positioning hole (16); the second clamping member comprises a second disc (21) and a second limiting ring (22), a second positioning plate (23) and a positioning column (24) which are installed on the lower end surface of the second disc (21), the second limiting ring (22) is arranged on the outer periphery of the second positioning plate (23) to form a second limiting groove (25), the center of the second positioning plate (23) is provided with a second positioning cavity (26), and the positioning column (24) is installed at the center of the second positioning cavity (26); the second limiting ring (22) corresponds to the first limiting groove (14), the second positioning plate (23) corresponds to the first positioning cavity (15), the positioning column (24) corresponds to the positioning hole (16), the second limiting groove (25) corresponds to the first limiting ring (12), and the second positioning cavity (26) corresponds to the first positioning plate (13). The outer periphery of the first limiting ring (12) is provided with a plurality of limiting holes (17) which are uniformly distributed in the circumferential direction, the limiting hole (17) is U-shaped, the opening of the limiting hole (17) is communicated with the first limiting groove (14), and the lower end surface of the second disc (21) is connected and assembled with the limiting hole (17). The lower end surface of the second disc (21) is installed with a limiting block (27) which is located in the second limiting groove (25) and matched with the limiting hole (17), the number of the limiting block (27) is multiple and uniformly distributed along the outer side wall of the second limiting groove (25) in the circumferential direction, and the multiple limiting blocks (27) correspond to the multiple limiting holes (17) one by one and are connected and assembled. The upper end surface of the first limiting ring (12) is provided with a plurality of positioning grooves (18) which are uniformly distributed in the circumferential direction, the positioning groove (18) is triangular and connected and assembled with the lower end surface of the second disc (21).

2. The buckle structure according to claim 1, wherein The lower end surface of the second disc (21) is installed with a positioning block (28) which is located in the second limiting groove (25) and matched with the remaining positioning grooves (18), the number of the positioning block (28) is multiple and uniformly distributed in the circumferential direction, and the multiple positioning blocks (28) correspond to the multiple positioning grooves (18) one by one and are connected and assembled.

3. The buckle structure according to claim 2, wherein The upper end surface of the first disc (11) is provided with a plurality of positioning circular holes (19) which are uniformly distributed in the circumferential direction in the first limiting groove (14), and the lower end surface of the second limiting ring (22) is installed with a plurality of positioning rods (29) which are matched with the positioning circular holes (19), the multiple positioning rods (29) correspond to the multiple positioning circular holes (19) one by one and are connected and assembled.

4. The buckle structure according to claim 1, wherein The first limiting ring (12), the second limiting ring (22) and the second positioning plate (23) are all annular members, and the first limiting groove (14), the first positioning cavity (15) and the second limiting groove (25) are all annular grooves.

5. The buckle structure according to claim 4, wherein ​ 6. The buckle structure according to claim 1, wherein ​ 7. The buckle structure according to claim 1, wherein ​ 8. The buckle structure of claim 1, wherein, The first positioning plate (13) is a regular polygon, and the second positioning cavity (26) is a regular polygon slot matched with the first positioning plate (13).

9. The buckle structure of claim 1, wherein, The outer wall of the positioning column (24) has a plurality of convexes which are uniformly distributed in the circumferential direction to form a wavy ring structure, and the positioning hole (16) is a wavy ring slot matched with the positioning column (24).

10. The buckle structure according to any one of claims 1-9, wherein, The lower middle part of the first disc (11) extends downward to form a base (101) connected with an external workpiece, and the upper end of the second disc (21) is provided with a connecting piece (201) connected with the external workpiece.

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