Mechanical lock catch type paper box

Abstract

The utility model provides a mechanical lock catch type paper box which is formed by folding a paper board structure, the paper board structure is integrally formed, a first inserting piece and a second inserting piece are arranged on the paper board structure, the paper board structure comprises a first self-locking part and a second self-locking part, the first self-locking part corresponds to the first inserting piece, and the second self-locking part corresponds to the second inserting piece. The first inserting piece is inserted into the first self-locking part, and the second inserting piece is inserted into the second self-locking part to enable the carton to be self-locked. By arranging the self-locking structure, safe sealing of the paper box is achieved, illegal opening is effectively prevented, meanwhile, using convenience is kept, and the paper box has the advantages that the sealing safety of the paper box is improved, illegal opening is prevented, and using convenience is kept.

Description

Technical Field

[0001] This utility model relates to the field of product packaging technology, and in particular to a mechanically locking cardboard box. Background Technology

[0002] In the packaging box industry, it's common for boxes to be opened after sealing or for improperly sealed boxes to pop open automatically, leading to the risk of product replacement or damage. These problems seriously affect product safety and integrity, causing inconvenience and losses for both manufacturers and consumers.

[0003] Traditional cardboard box closures typically rely on simple folding or gluing, methods that often fail to provide sufficient security. For example, folding boxes are easily opened, while glued boxes may lose their adhesive after repeated opening and closing. Furthermore, some boxes may spontaneously open during transport due to vibration or pressure, leading to exposure or damage to the contents.

[0004] On the other hand, some existing security enclosure designs may be overly complex, increasing production costs and difficulty of use. While some designs improve security, they sacrifice ease of use, making them difficult for consumers to use normally.

[0005] Therefore, manufacturers have raised new requirements for the security of sealed cardboard boxes. They want to develop a box-sealing method that can effectively prevent unauthorized opening without affecting normal use. This method should ensure security while maintaining economic efficiency in production and ease of use.

[0006] To address the aforementioned issues, existing technologies urgently need improvement. Utility Model Content

[0007] The purpose of this invention is to provide a mechanically locking cardboard box, which has the advantages of improving the security of the cardboard box closure, preventing unauthorized opening, and maintaining ease of use.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] According to an embodiment of the present invention, the cardboard box is formed by folding a cardboard structure. The cardboard structure is integrally formed and has a first insert and a second insert. The cardboard structure includes a first self-locking part and a second self-locking part. The first self-locking part is disposed corresponding to the first insert, and the second self-locking part is disposed corresponding to the second insert. The first insert is inserted into the first self-locking part, and the second insert is inserted into the second self-locking part to make the cardboard box self-lock.

[0010] According to the embodiments of the present utility model, the mechanically locked paper box achieves secure sealing of the paper box by setting a self-locking structure, effectively preventing unauthorized opening, while maintaining ease of use. It has the advantages of improving the sealing security of the paper box, preventing unauthorized opening, and maintaining ease of use.

[0011] In addition, the mechanically locking cardboard box according to the above embodiments of this utility model may also have the following additional technical features:

[0012] In some embodiments of this utility model, the cardboard structure includes a first side plate, a first guide plate, and a second guide plate. The first guide plate and the second guide plate are disposed on opposite sides of the first side plate. The first self-locking part and the second self-locking part are disposed on the first side plate and located on opposite sides of the first side plate. The first self-locking part is disposed close to the first guide plate, and the second self-locking part is disposed close to the second guide plate.

[0013] In some embodiments of this utility model, the first guide plate is provided with a first guide hole, which is located near the first self-locking part; the second guide plate is provided with a second guide hole, which is located near the second self-locking part.

[0014] In some embodiments of this utility model, the cardboard structure includes: a second side plate and a dustproof plate, the second side plate is disposed on one side of the first side plate and the second side plate and the first side plate are directly opposite each other on the cardboard box, and dustproof plates are provided on opposite sides of the second side plate.

[0015] In some embodiments of this utility model, the cardboard structure includes a third side plate, a bottom plate, and a top plate. The third side plate is disposed on one side of the second side plate, and the third side plate and the first side plate are located on opposite sides of the second side plate. The bottom plate and the top plate are disposed on opposite sides of the third side plate.

[0016] In some embodiments of this utility model, the first insert is disposed on one side of the top plate, the second insert is disposed on one side of the bottom plate, and the first insert and the second insert are on the same straight line.

[0017] In some embodiments of this utility model, the first insert includes a first main body, a first part, a second part, and a third part, the first part, the second part, and the third part are disposed on the top plate, and the second part and the third part are disposed on opposite sides of the first part.

[0018] In some embodiments of this utility model, the second insert includes a fourth part, a fifth part, and a sixth part, which are disposed on the base plate, and the sixth part and the fifth part are disposed on opposite sides of the fourth part.

[0019] In some embodiments of this utility model, the cardboard structure includes a connecting plate, which is disposed on one side of the third side plate.

[0020] In some embodiments of this utility model, the cardboard structure further includes a bending portion, which is located at the crease where the cardboard structure is folded into the paper box.

[0021] 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

[0022] Figure 1 This is a schematic diagram of the mechanical locking type paper box structure according to an embodiment of the present utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the mechanical locking type paper box structure according to an embodiment of the present utility model. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the mechanically locking type pre-formed paper box structure according to an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the mechanical locking type paper box folding structure according to an embodiment of the present utility model;

[0026] Figure 5 This is a schematic diagram of the mechanical locking type paper box sealing and forming structure according to an embodiment of the present utility model.

[0027] Figure Labels

[0028] 1. First side plate; 2. Second side plate; 3. Third side plate; 4. Bending part; 5. Connecting plate; 6. Dustproof plate; 8. First guide hole; 9. Second guide hole; 10. First guide plate; 11. Second guide plate; 12. First self-locking part; 13. Second self-locking part; 14. Top plate; 15. Bottom plate; 16. First insert; 17. Second insert; 20. First part; 21. Second part; 22. Third part; 23. Fourth part; 24. Fifth part; 25. Sixth part. Detailed Implementation

[0029] The following is a more detailed description of a mechanically locking cardboard box according to the present invention, with reference to the accompanying drawings, which illustrate preferred embodiments of the present invention. It should be understood that those skilled in the art can modify the present invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the present invention.

[0030] In the description of this specification, terms such as "one embodiment" or "some embodiments" mean that one or more embodiments of this specification include a particular feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0031] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] The mechanically locking cardboard box according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0033] According to the embodiments of the present utility model, a mechanically locking paper box, such as... Figures 1-5 As shown, the cardboard box is formed by folding a cardboard structure. The cardboard structure is integrally formed and has a first insert 16 and a second insert 17. The cardboard structure includes a first self-locking part 12 and a second self-locking part 13. The first self-locking part 12 is set corresponding to the first insert 16, and the second self-locking part 13 is set corresponding to the second insert 17. The first insert 16 is inserted into the first self-locking part 12, and the second insert 17 is inserted into the second self-locking part 13 to make the cardboard box self-lock.

[0034] The one-piece molding design of the cardboard structure ensures its stability and strength. The arrangement of the first insert 16 and the second insert 17, and their cooperation with the first self-locking part 12 and the second self-locking part 13 respectively, realizes the self-locking function of the cardboard box. Specifically, the design of the first insert 16 and the second insert 17 can be implemented in various ways. For example, the first insert 16 may include a first part 20, a second part 21, and a third part 22, which are disposed on the top plate 14, with the second part 21 and the third part 22 located on opposite sides of the first part 20. Further, the second insert 17 may include a third part 22, a fourth part 23, and a fifth part 24, which are disposed on the bottom plate 15, with the fourth part 23 and the fifth part 24 located on opposite sides of the third part 22.

[0035] Therefore, the cardboard box achieves automatic locking through a simple mechanical structure, effectively preventing the box from being manually opened after sealing or from automatically popping open due to imperfect sealing. This design improves the security and sealing effect of the cardboard box, solving the technical problem of the box automatically popping open due to manual opening after sealing or imperfect sealing. Compared with the prior art, the technical solution of this utility model achieves a more reliable self-locking function through the integrated cardboard structure and the cooperation of the insert and self-locking part, enhancing the anti-tampering performance of the cardboard box.

[0036] In some embodiments of this utility model, such as Figure 1 , Figure 2 , Figure 3 As shown, the cardboard structure includes a first side plate 1, a first guide plate 10, and a second guide plate 11. The first guide plate 10 and the second guide plate 11 are disposed on opposite sides of the first side plate 1. The first self-locking part 12 and the second self-locking part 13 are disposed on the first side plate 1 and located on opposite sides of the first side plate 1. The first self-locking part 12 is disposed close to the first guide plate 10, and the second self-locking part 13 is disposed close to the second guide plate 11.

[0037] Specifically, the arrangement of the first self-locking part 12 and the second self-locking part 13 enables the cardboard box to self-lock during sealing through the cooperation of the first self-locking part 12 and the second self-locking part 13, thereby improving the security of the cardboard box after sealing. The first self-locking part 12 is located near the first guide plate 10, and the second self-locking part 13 is located near the second guide plate 11. This arrangement helps ensure that the insert can be accurately inserted into the self-locking part, further enhancing the self-locking effect of the cardboard box, effectively preventing the cardboard box from being opened manually or automatically, and ensuring the safety and integrity of the product.

[0038] Therefore, this utility model, through the arrangement of the first side plate 1, the first guide plate 10, and the second guide plate 11, and the cooperation of the first self-locking part 12 and the second self-locking part 13, solves the technical problem of insufficient security after the cardboard box is sealed. Compared with the prior art, the technical solution of this utility model, through the precise layout of the self-locking parts and the setting of the guide holes, significantly improves the self-locking effect of the cardboard box, ensuring the safety and integrity of the product.

[0039] In some embodiments of this utility model, such as Figure 1 , Figure 2 As shown, the first guide plate 10 is provided with a first guide hole 8, which is located near the first self-locking part 12. The second guide plate 11 is provided with a second guide hole 9, which is located near the second self-locking part 13.

[0040] Specifically, the first guide hole 8 and the second guide hole 9 are designed to ensure precise guidance for the first insert 16 and the second insert 17 when they are inserted into the first self-locking part 12 and the second self-locking part 13. As a preferred embodiment, the first guide hole 8 can be designed as circular or elliptical to ensure smooth insertion of the insert. The second guide hole 9 can also adopt a similar shape to improve the insertion efficiency of the insert. Furthermore, the size of the guide hole can be adjusted according to the size of the insert to ensure accurate insertion into the self-locking part.

[0041] Therefore, the arrangement of the first guide hole 8 and the second guide hole 9 ensures that the first insert 16 and the second insert 17 are precisely guided when inserted into the first self-locking part 12 and the second self-locking part 13, thereby ensuring that the cardboard box can accurately self-lock and avoiding problems such as imperfect sealing or automatic pop-out. This design enhances the sealing stability and security of the cardboard box by providing a precise guiding path. Compared with the prior art, the technical solution of this utility model significantly improves the sealing accuracy and stability of the cardboard box by adding guide hole design, effectively solving the technical problem of guide hole setting after the cardboard box is sealed.

[0042] In some embodiments of this utility model, such as Figures 1-4 As shown, the cardboard structure includes a second side panel 2 and a dustproof panel 6. The second side panel 2 is disposed on one side of the first side panel 1 and the second side panel 2 and the first side panel 1 are directly opposite each other on the cardboard box. The dustproof panels 6 are disposed on opposite sides of the second side panel 2.

[0043] Specifically, the second side panel 2 increases the structural stability of the cardboard box, while the dustproof panel 6 not only improves the dustproof performance of the cardboard box but also enhances its compression resistance. In a preferred embodiment, the dustproof panel 6 achieves its function through a tight connection with the second side panel 2, for example, by adhesive or snap-fit. Furthermore, the material of the dustproof panel 6 can be selected from materials with a certain degree of hardness and dustproof effect, such as cardboard or plastic sheet, to ensure its effectiveness in practical use.

[0044] Therefore, the second side panel 2 and the dustproof panel 6 provide higher security for the cardboard box after sealing, reducing the risk of the cardboard box being opened by humans or the sealing being imperfect. Compared with the prior art, this utility model, by adding the dustproof panel 6, not only solves the problem of insufficient security of the cardboard box after sealing, but also improves the overall performance of the cardboard box, making it more superior in terms of dust prevention and pressure resistance.

[0045] In some embodiments of this utility model, such as Figures 1-4 As shown, the cardboard structure includes a third side plate 3, a bottom plate 15, and a top plate 14. The third side plate 3 is disposed on one side of the second side plate 2, and the third side plate 3 and the first side plate 1 are located on opposite sides of the second side plate 2. The bottom plate 15 and the top plate 14 are disposed on opposite sides of the third side plate 3.

[0046] The arrangement of the third side plate 3, the bottom plate 15, and the top plate 14 increases the structural stability of the cardboard box, making it less likely to be manually opened or automatically pop open after sealing, thereby improving the security of the sealed cardboard box. Specifically, the third side plate 3 makes the sides of the cardboard box more robust, while the bottom plate 15 and the top plate 14 enhance the vertical stability of the cardboard box. Furthermore, the relative position design of the third side plate 3 and the second side plate 2 allows the cardboard box to form a tighter structure after folding, preventing the cardboard box from automatically popping open due to external forces during transportation or storage.

[0047] Furthermore, the bottom plate 15 and the top plate 14 can be reinforced with ribs or have a concave-convex design to increase their contact area with the third side plate 3, thereby improving the overall structural strength.

[0048] Therefore, by adding the third side plate 3, the bottom plate 15, and the top plate 14, this utility model effectively solves the security problem of the sealed cardboard box, making it less likely to be opened manually or automatically after sealing, thus improving the security of the sealed cardboard box. Compared with the prior art, the cardboard box structure of this utility model is more stable, better protects the internal products, and reduces the risk of product replacement or damage.

[0049] In some embodiments of this utility model, such as Figure 1 , Figure 2 As shown, the first insert 16 is disposed on one side of the top plate 14, and the second insert 17 is disposed on one side of the bottom plate 15. The first insert 16 and the second insert 17 are on the same straight line.

[0050] Specifically, the design of the first insert 16 and the second insert 17 allows the cardboard box to self-lock after sealing by inserting the inserts into the self-locking part. The placement of the first insert 16 on the top plate 14 and the second insert 17 on the bottom plate 15 ensures the self-locking capability of the cardboard box on the top plate 14 and the bottom plate 15, further enhancing the self-locking effect of the cardboard box. As a preferred embodiment, the first insert 16 may include a first main body, a first part 20, a second part 21, and a third part 22. The first main body is connected to the top plate 14, the first part 20, the second part 21, and the third part 22 are located on the side of the first main body opposite to the top plate 14, and the second part 21 and the third part 22 are located on opposite sides of the first part 20. Similarly, the second insert 17 may include a second main body, a third part 22, a fourth part 23 and a fifth part 24. The second main body is connected to the base plate 15. The third part 22, the fourth part 23 and the fifth part 24 are located on the side of the second main body opposite to the base plate 15, and the fourth part 23 and the fifth part 24 are located on opposite sides of the third part 22.

[0051] Therefore, through the above design, the cardboard box can effectively prevent it from being opened manually or automatically after sealing, ensuring the safety and integrity of the product. Compared with the prior art, the technical solution of this utility model significantly improves the security of the cardboard box after sealing through the self-locking design of the insert, solving the technical problem of insufficient security of the cardboard box after sealing.

[0052] In some embodiments of this utility model, such as Figures 1-4 As shown, the first insert 16 includes a first part 20, a second part 21 and a third part 22, which are disposed on the top plate 14, and the second part 21 and the third part 22 are disposed on opposite sides of the first part 20.

[0053] Specifically, the connection between the first part 20, the second part 21, and the third part 22 and the top plate 14 provides fixing points for the insert, and the relative arrangement of the first part 20, the second part 21, and the third part 22 enhances the structural strength and stability of the insert. In a preferred embodiment, the first part 20, the second part 21, and the third part 22 can be fixed to the top plate 14 by bonding, welding, or other mechanical connection methods. The first part 20, the second part 21, and the third part 22 can be formed by bending, cutting, or molding to ensure their stability and durability during use. Furthermore, the second part 21 and the third part 22 are located on opposite sides of the first part 20; this arrangement effectively disperses stress and prevents deformation or damage to the insert during use.

[0054] Therefore, the design of the first insert 16 includes multiple parts, which, through a specific layout and connection method, ensure the stability and reliability of the insert after the cardboard box is sealed. The arrangement of the first part 20, the second part 21, and the third part 22, and their relative positions, enhance the structural strength and stability of the insert, thereby effectively solving potential problems with the insert structure after the cardboard box is sealed.

[0055] Compared with the prior art, the technical solution of this utility model significantly improves the safety and stability of the cardboard box after sealing by optimizing the structural design of the insert, avoiding the phenomenon of the cardboard box being opened by human intervention or the sealing being imperfect, thus effectively protecting the integrity and safety of the product.

[0056] In some embodiments of this utility model, such as Figures 1-3 As shown, the second insert 17 includes the fourth part 23, the fifth part 24 and the sixth part 25. The fourth part 23, the fifth part 24 and the sixth part 25 are disposed on the base plate 15, and the sixth part 25 and the fifth part 24 are disposed on opposite sides of the fourth part 23.

[0057] The fourth part 23, the fifth part 24, and the sixth part 25 are connected to the base plate 15 by adhesive, welding, or other mechanical means to ensure that the second insert 17 is firmly fixed to the base plate 15. The fourth part 23, the fifth part 24, and the sixth part 25 can have different shapes and sizes. For example, the fourth part 23 can be a long strip structure, while the sixth part 25 and the fifth part 24 can be two symmetrical protruding structures. These structural designs can increase the stability and strength of the second insert 17. Furthermore, the sixth part 25 and the fifth part 24 are located on opposite sides of the fourth part 23. This arrangement makes the second insert 17 more stable when inserted into the base plate 15, preventing the cardboard box from being manually opened or automatically popping open.

[0058] In a preferred embodiment, the fourth part 23, the fifth part 24, and the sixth part 25 can be bonded to the base plate 15 with hot melt adhesive, and the fourth part 23, the fifth part 24, and the sixth part 25 can be integrally molded to improve production efficiency and structural consistency. Furthermore, the material of the second insert 17 can be high-strength cardboard or composite material to enhance its durability and tensile strength.

[0059] Therefore, the structural stability of the cardboard box is enhanced through the design of the second insert 17. Specifically, the second insert 17 is connected to the base plate 15 through the fourth part 23, the fifth part 24, and the sixth part 25, ensuring the stability of the cardboard box after sealing and effectively preventing product replacement or damage. This design not only improves the safety of the cardboard box after sealing but also enhances its durability, preventing damage from external forces during transportation or storage.

[0060] Furthermore, compared with the prior art, the design of the second insert 17 of this utility model significantly improves the tensile strength and stability of the paper box by adding multiple structural components, thus solving the technical problem of insufficient security of the paper box after sealing.

[0061] In some embodiments of this utility model, such as Figure 1 , Figure 2 As shown, the cardboard structure includes a connecting plate 5, which is disposed on one side of the third side plate 3.

[0062] Specifically, the connecting plate 5 can be implemented in various ways. For example, the connecting plate 5 can be part of the integrally formed cardboard structure, or it can be a separate component attached to the third side plate 3 by adhesive or other fixing methods. As a preferred embodiment, the connecting plate 5 can be designed as a long strip parallel to the third side plate 3, and its length and width can be adjusted according to the specific size and structural requirements of the cardboard box. Furthermore, the connecting plate 5 can be strengthened and stabilized by reinforcing ribs or convex-concave structures, thereby better enhancing the overall structure of the cardboard box.

[0063] Therefore, the connecting plate 5 is located on one side of the third side plate 3. This design enhances the structural stability of the cardboard box and helps prevent it from being opened manually after sealing or from automatically popping open due to imperfect sealing, thereby improving the safety of the cardboard box. By adding the connecting plate 5, the overall strength of the cardboard box is improved, ensuring that the sealed cardboard box can be effectively prevented from being illegally opened or accidentally popping open, meeting the manufacturer's new requirements for the safety of the cardboard box after sealing.

[0064] Specifically, the design of the connecting plate 5 makes the cardboard box form a more stable whole after sealing, reducing the risk of the cardboard box automatically opening due to external force or imperfect sealing. Compared with the prior art, this utility model, by adding the connecting plate 5, not only improves the structural strength of the cardboard box, but also simplifies the production process, reduces production costs, and improves the safety of the cardboard box in use.

[0065] In some embodiments of this utility model, such as Figures 1-5 As shown, the cardboard structure also includes a bending portion 4, which is located at the crease where the cardboard structure is folded into the paper box.

[0066] Specifically, the bending portion 4 can be achieved by adding additional material or structure at the crease location of the cardboard structure to enhance the stability of the crease location. For example, the bending portion 4 can be achieved by adding one or more layers of thin cardboard at the crease location, or by setting special indentations or grooves at the crease location. As a preferred embodiment, the bending portion 4 can be designed to be integrally formed with the cardboard structure to ensure its stability and durability during the folding process.

[0067] Therefore, the bending portion 4 enhances the stability of the crease position during the folding process, ensuring that the box maintains its shape after folding and preventing deformation or automatic pop-out due to unstable crease positions. This technical feature, by adding the bending portion 4 at key crease positions, effectively solves the stability problem of the box during folding, thereby improving the overall structural strength and safety of the box. Compared with the prior art, the technical solution of this utility model has significant advantages in solving the problem of box folding stability, especially in preventing the box from automatically popping out and maintaining its shape.

[0068] In summary, in one embodiment of this utility model, as Figures 1-5 As shown, after the surfaces of the first guide plate 10 and the second guide plate 11 are coated with adhesive, they are folded 180° along the bending portion 4 and then bonded to the first side plate 1. This forms... Figure 2 The diagram shows a semi-pre-formed folding structure.

[0069] Figure 2 The cardboard box shown in the schematic diagram of the semi-pre-formed folding structure is formed by folding the second side panel 2 and the connecting plate 5 180° along the folding portion 4 on the right side of the second side panel 2, then applying adhesive to the surface of the connecting plate 5, and finally folding the third side panel 3 180° along the bending portion 4 on the right side and bonding it to the connecting plate 5, thus forming the... Figure 3 The diagram shows a preformed folding structure.

[0070] The pre-formed, folded cardboard box is manipulated using fully automated equipment to achieve a three-dimensional folded state, such as... Figure 4 As shown. At this time, the first side panel 1 is opposite to the second side panel 2, and the two third side panels 3 are opposite to each other, and the cardboard box has reached the posture of loading the product.

[0071] After the product is loaded, the packaging process is performed using fully automated equipment. The first step involves folding the four dustproof plates 6 inwards by 90° along the four bends 4. The second step involves folding the first insert 16 and the second insert 17 inwards by 90° along the upper and lower bends 4. The third step involves folding the top plate 14 inwards by 90° along the bends 4, so that the first insert 20 is inserted into the gap in the middle of the first self-locking part 12 from the outside, and the third part 22 and the second part 21 are inserted into the cardboard box from the inside of the first side plate 1. The locking actions of the bottom plate 15 and the top plate 14 are the same, thus completing the mechanical locking action of the cardboard box. Figure 5 As shown.

[0072] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A mechanically locking cardboard box, characterized in that, The cardboard box is formed by folding a cardboard structure. The cardboard structure is integrally formed and has a first insert (16) and a second insert (17). The cardboard structure includes a first self-locking part (12) and a second self-locking part (13). The first self-locking part (12) is set corresponding to the first insert (16), and the second self-locking part (13) is set corresponding to the second insert (17). The first insert (16) is inserted into the first self-locking part (12), and the second insert (17) is inserted into the second self-locking part (13) to make the cardboard box self-lock.

2. The mechanically locking cardboard box according to claim 1, characterized in that, The cardboard structure includes a first side plate (1), a first guide plate (10), and a second guide plate (11). The first guide plate (10) and the second guide plate (11) are disposed on opposite sides of the first side plate (1). The first self-locking part (12) and the second self-locking part (13) are disposed on the first side plate (1) and located on opposite sides of the first side plate (1). The first self-locking part (12) is disposed close to the first guide plate (10), and the second self-locking part (13) is disposed close to the second guide plate (11).

3. The mechanically locking cardboard box according to claim 2, characterized in that, The first guide plate (10) is provided with a first guide hole (8), which is located near the first self-locking part (12). The second guide plate (11) is provided with a second guide hole (9), which is located near the second self-locking part (13).

4. The mechanically locking cardboard box according to claim 2, characterized in that, The cardboard structure includes a second side plate (2) and a dustproof plate (6). The second side plate (2) is located on one side of the first side plate (1) and the second side plate (2) and the first side plate (1) are directly opposite each other on the cardboard box. The dustproof plate (6) is provided on the opposite sides of the second side plate (2).

5. The mechanically locking cardboard box according to claim 4, characterized in that, The cardboard structure includes a third side plate (3), a bottom plate (15), and a top plate (14). The third side plate (3) is located on one side of the second side plate (2), and the third side plate (3) and the first side plate (1) are located on opposite sides of the second side plate (2). The bottom plate (15) and the top plate (14) are located on opposite sides of the third side plate (3).

6. The mechanically locking cardboard box according to claim 5, characterized in that, The first insert (16) is located on one side of the top plate (14), and the second insert (17) is located on one side of the bottom plate (15). The first insert (16) and the second insert (17) are on the same straight line.

7. The mechanically locking cardboard box according to claim 6, characterized in that, The first insert (16) includes a first part (20), a second part (21) and a third part (22), the first part (20), the second part (21) and the third part (22) are disposed on the top plate (14), and the second part (21) and the third part (22) are disposed on opposite sides of the first part (20).

8. The mechanically locking cardboard box according to claim 6, characterized in that, The second insert (17) includes a fourth part (23), a fifth part (24) and a sixth part (25), the fourth part (23), the fifth part (24) and the sixth part (25) are disposed on the base plate (15), and the sixth part (25) and the fifth part (24) are disposed on opposite sides of the fourth part (23).

9. The mechanically locking cardboard box according to claim 5, characterized in that, The cardboard structure includes a connecting plate (5), which is located on one side of the third side plate (3).

10. The mechanically locking cardboard box according to claim 1, characterized in that, The cardboard structure also includes a bending portion (4), which is located at the crease where the cardboard structure is folded into the box.

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