A carton structure

Abstract

The utility model discloses a kind of carton structures, belong to food container field, a kind of carton structure, including box body and box bottom, the bottom of box body is connected with box bottom by first fold line, box body has horizontal easy tear line, two ends of horizontal easy tear line are located at the two side walls adjacent to box body respectively, box bottom includes first bottom plate, second bottom plate, third bottom plate and fourth bottom plate, first bottom plate is connected with second bottom plate, second bottom plate is connected with third bottom plate, third bottom plate is connected with fourth bottom plate, fourth bottom plate is connected with first bottom plate.The utility model is closed loop by box bottom and is connected, across side wall easy tear line folding and other self structure design, without tool and additional accessory, container, equipment support, anti-scald cup sleeve triple function can be conveniently realized anytime switching, adapt to multiple scenes and easy to use, both improve product reuse rate and practical value, and reduce material consumption and waste generation.

Description

Technical Field

[0001] This utility model belongs to the field of food containers, and in particular relates to a paper box structure. Background Technology

[0002] In daily life, cardboard boxes are commonly used containers for carrying items due to their advantages such as lightweight material, low cost, easy processing, and recyclability. Current cardboard box structures typically employ a simple box-like design, mainly composed of a box body, lid, and base. The box body is often a fixed shape such as a cuboid, cube, or trapezoid to accommodate different items. Some cardboard boxes may have printed patterns, handles, or simple locking mechanisms added to the outside, but their overall function remains limited to the core purpose of carrying and storing items, resulting in a significant functional limitation. As user scenarios become more diverse, the functional limitations of existing cardboard box structures are becoming increasingly apparent, making it difficult to meet users' extended needs in actual use.

[0003] Existing cardboard box structures only have a single function of carrying and storing items, which cannot meet the diverse needs of users in scenarios such as heat protection, temporary support, and auxiliary support. Therefore, developing a cardboard box structure that can integrate multiple functions, adapt to multiple usage scenarios, and take into account both convenience and environmental protection has become an important research direction for those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to propose a paper box structure to overcome at least one of the above-mentioned defects in the prior art.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The present invention provides a paper box structure, including a box body and a box bottom. The bottom of the box body is connected to the box bottom through a first fold line. The box body has a horizontal easy-tear line, and the two ends of the horizontal easy-tear line are respectively located on the adjacent side walls of the box body. The box bottom includes a first bottom plate, a second bottom plate, a third bottom plate, and a fourth bottom plate. The first bottom plate is engaged with the second bottom plate, the second bottom plate is engaged with the third bottom plate, the third bottom plate is engaged with the fourth bottom plate, and the fourth bottom plate is engaged with the first bottom plate.

[0007] Preferably, the box body includes an extension plate, a first side plate, a second side plate, a third side plate, and a fourth side plate connected sequentially from left to right. The extension plate, the first side plate, the second side plate, the third side plate, and the fourth side plate form the box body. The extension plate is located inside the fourth side plate and is bonded to the fourth side plate. The connection between the extension plate and the first side plate, the connection between the first side plate and the second side plate, the connection between the second side plate and the third side plate, and the connection between the third side plate and the fourth side plate all have a second fold line. The connection between the first side plate and the first bottom plate, the connection between the second side plate and the second bottom plate, the connection between the third side plate and the third bottom plate, and the connection between the fourth side plate and the fourth bottom plate all have a first fold line. The second side plate and the third side plate are both provided with horizontal easy-tear lines, and the horizontal easy-tear lines of the second side plate and the third side plate are connected.

[0008] Preferably, the first base plate, the second base plate, the third base plate, and the fourth base plate have the same structure, each including a plate body and a first locking part. One side of the plate body is connected to the box body through a first fold line, and the other side of the plate body is connected to the first locking part through a third fold line. The plate body has a first locking hole. The first locking part of the first base plate engages with the first locking hole of the second base plate, the first locking part of the second base plate engages with the first locking hole of the third base plate, the first locking part of the third base plate engages with the first locking hole of the fourth base plate, and the first locking part of the fourth base plate engages with the first locking hole of the first base plate.

[0009] Preferably, the cross-sectional area of ​​the box body increases from the opening to the bottom.

[0010] Preferably, both the box body and the bottom are made of laminated kraft paper.

[0011] Preferably, it further includes a partition, a first connecting part, a second connecting part, a second locking part, and a third locking part. The first side plate has a second locking hole, and the fourth side plate has a third locking hole. The third locking hole is located above the second locking hole. One end of the partition has a first connecting part and a second connecting part. The first connecting part is located above the second connecting part and is connected to the third side plate. The second connecting part is connected to the second side plate. The other end of the partition has a second locking part and a third locking part. The second locking part is located above the third locking part and engages with the third locking hole. The third locking part engages with the second locking hole.

[0012] Preferably, the first connecting part and the second connecting part both have a fourth fold line at the connection with the partition, the second card part and the third card part both have a fifth fold line at the connection with the partition, and the partition has a sixth fold line, which divides the partition into left and right parts.

[0013] Preferably, the partition, the first connecting part, the second connecting part, the second locking part, and the third locking part are integrally formed and are made of coated kraft paper.

[0014] Preferably, the lower part of the first side plate, the second side plate, the third side plate, and the fourth side plate all have an arc-shaped easy-tear line, which is located below the horizontal easy-tear line.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. Through its own structural design, such as the closed-loop snap-fit ​​at the bottom of the box and the easy-tear folding across the side walls, it can easily switch between the functions of container, device holder, and anti-scalding cup sleeve without tools or additional accessories. It is suitable for multiple scenarios and easy to use, which not only improves the product's reusability and practical value, but also reduces material consumption and waste generation.

[0017] 2. The bottom plates and corresponding side plates of the box are pre-connected as one unit. They can be assembled by folding and snapping them together through the first fold line. This simplifies production and operation, improves the efficiency of large-scale production, and enhances the load-bearing and deformation prevention capacity through the multi-layer snap-fit ​​composite structure. It also prevents the box bottom from being lost. During transportation, it can be laid flat to reduce space occupation and prevent crushing damage. It ensures that users can easily switch functions at any time and improves the continuity and reliability of use.

[0018] 3. The four base plates adopt the same structural design. Users can assemble them by inserting the first card into the first card hole according to the same logic, which greatly reduces the difficulty of operation and the probability of error. The closed-loop interlocking makes the base plates mutually restrain each other and cooperate in bearing the force, which can distribute vertical pressure, increase contact friction, and effectively reduce the risk of loosening and deformation of the box bottom, making it suitable for rapid production and daily use.

[0019] 4. When the cardboard box is inverted, the four bottom plates of the disassembled and bent box bottom can form a ring support structure, which can not only fix the paper cup to prevent slipping and guide the paper cup through, but also form a grip gap to avoid the high temperature zone in combination with the shape of the box body. In addition, the increasing cross-section design of the box body realizes the adaptation advantages, improves stability and enhances support in the three scenarios of anti-scalding, storage and support, respectively, and achieves the reuse value of one form adapting to three functions.

[0020] 5. When the cardboard box is used as a container, the partition can be fixed across the box body by double connection and double snap-fit ​​to divide the space into independent spaces to prevent the items from mixing. When used as a support structure, it can act as an oblique reinforcing rib to distribute the force and prevent the support surface from deforming and the box body from collapsing. Moreover, the partition is pre-integrated with the box body and does not require additional assembly or disassembly, avoiding the problems of easy loss and troublesome installation of independent partitions.

[0021] 6. The fourth, fifth, and sixth fold lines are set at the relevant connection positions of the partition to facilitate the left and right bending of the partition, ensure precise alignment of the clip and the clip hole, and allow it to be attached to the side panel of the box when not in use, thereby improving the ease of assembly and spatial flexibility of the partition.

[0022] 7. The partition and its related components are integrally molded and made of coated kraft paper, eliminating the need for additional assembly and splicing, reducing production difficulty and cost, and improving mass production efficiency. At the same time, the absence of splicing gaps and the strength of the coated kraft paper enhance the partition's load-bearing and deformation resistance, ensuring stable separation and support functions.

[0023] 8. When straws or chopsticks need to be placed, simply bend the corresponding area inward along the arc-shaped tear line at the bottom of the side panel to form a support platform and create an opening for long and slender items to be inserted and placed. No additional accessories are required, easily adding an item support function suitable for catering scenarios. Attached Figure Description

[0024] Figure 1 This is a top view of the structure of Embodiment 1 of this utility model (container state).

[0025] Figure 2 This is a schematic diagram of the unfolded structure of Embodiment 1 of this utility model.

[0026] Figure 3 This is a front view structural diagram of the plate body, the first card part, and the first card hole of Embodiment 1 of this utility model.

[0027] Figure 4 This is a top view of the structure of Embodiment 1 of this utility model (cup sleeve state, box body inverted).

[0028] Figure 5 This is a schematic diagram of the main structure of Embodiment 1 of this utility model (container state).

[0029] Figure 6 This is a three-dimensional structural diagram (support state) of Embodiment 1 of this utility model.

[0030] Figure 7 This is a schematic diagram of the unfolded state of the box body and box bottom in Embodiment 2 of this utility model.

[0031] Figure 8 This is a three-dimensional structural diagram (support state) of Embodiment 2 of this utility model.

[0032] Figure 9 This is a schematic diagram of the unfolded structure of the partition, the first connecting part, the second connecting part, the second locking part, and the third locking part in Embodiment 2 of this utility model.

[0033] Figure 10 This is a schematic diagram of the unfolded structure of Embodiment 3 of this utility model.

[0034] Figure 11 This is a rear view structural schematic diagram of Embodiment 3 of this utility model (with the arc-shaped tear line not torn).

[0035] Figure 12This is a rear view structural diagram of Embodiment 3 of this utility model (with the arc-shaped tear line torn open).

[0036] The markings in the attached diagram are as follows: 1-box body, 2-box bottom, 3-first fold line, 11-horizontal easy-tear line, 21-first bottom plate, 22-second bottom plate, 23-third bottom plate, 24-fourth bottom plate, 12-extension plate, 13-first side plate, 14-second side plate, 15-third side plate, 16-fourth side plate, 17-second fold line, 210-plate body, 211-first latching part, 212-first latching hole, 213-third fold line, 4-partition, 5-first connecting part, 6-second connecting part, 7-second latching part, 8-third latching part, 18-second latching hole, 19-third latching hole, 9-fourth fold line, 10-fifth fold line, 41-sixth fold line, 110-arc-shaped easy-tear line. Detailed Implementation

[0037] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0038] Contents not described in detail in this specification are existing technologies known to those skilled in the art. In the description of this utility model, it should be understood that terms such as "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model. Furthermore, terms such as "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] Example 1:

[0040] like Figures 1 to 6 As shown, the paper box structure provided in this embodiment includes a box body 1 and a box bottom 2. The bottom of the box body 1 is connected to the box bottom 2 through a first fold line 3. The box body 1 has a horizontal easy-tear line 11, and the two ends of the horizontal easy-tear line 11 are respectively located on the adjacent side walls of the box body 1. The box bottom 2 includes a first bottom plate 21, a second bottom plate 22, a third bottom plate 23, and a fourth bottom plate 24. The first bottom plate 21 is engaged with the second bottom plate 22, the second bottom plate 22 is engaged with the third bottom plate 23, the third bottom plate 23 is engaged with the fourth bottom plate 24, and the fourth bottom plate 24 is engaged with the first bottom plate 21.

[0041] When used as a container, the first to fourth bottom plates 24 of the box bottom 2 are sequentially snapped together (forming a closed-loop interlocking structure) to maintain the integrity of the box body. At this time, the horizontal easy-tear line 11 is inactive, the box body 1 is completely closed, and it can be used as a regular container to hold food, daily necessities and other items, meeting basic storage needs.

[0042] When support is needed, the box body 1 is folded inward along the horizontal tear line 11. Since the two ends of the tear line are located on adjacent side walls, folding causes the corresponding areas of both side walls to fold inward simultaneously. The part of the box body 1 below the tear line forms a support, which can stably support mobile phones, small tablets, etc., enabling functions such as video viewing and temporary storage. During the folding process, the main structure of the box body 1 remains intact, and the lower part can still accommodate small items such as charging cables and earphones.

[0043] When the anti-scalding function is required, disassemble the snap-fit ​​structure of the bottom 2 of the box and bend the first to fourth bottom plates 24 inward to form a ring-shaped cup sleeve frame. Invert the cardboard box (with the original bottom 2 facing up and the original opening facing down) to easily slip it onto the outside of the paper cup, avoiding direct contact between the hands and the hot paper cup, thus achieving the anti-scalding effect.

[0044] This invention breaks through the traditional single-function storage function of cardboard boxes, achieving triple functionality as a container, equipment holder, and heat-resistant cup sleeve through structural transformation. It is suitable for various scenarios, including home, office, and outdoor dining, significantly increasing its application coverage. Functional transformation is accomplished through only two core actions: snapping / unscrewing the bottom 2 and folding the easy-tear line, requiring no tools. The horizontal easy-tear line 11, designed across the side walls, ensures precise folding direction, while the closed-loop snap-fit ​​structure of the four plates on the bottom 2 guarantees stability in all forms, allowing users to quickly get started. All functions are achieved through the cardboard box's own structure, eliminating the need for additional accessories and reducing material consumption and waste. The three modes can be switched at any time to meet users' immediate needs in different scenarios, improving the product's reusability and practical value.

[0045] The box body 1 includes an extension plate 12, a first side plate 13, a second side plate 14, a third side plate 15, and a fourth side plate 16 connected sequentially from left to right. The extension plate 12, first side plate 13, second side plate 14, third side plate 15, and fourth side plate 16 form the box body 1. The extension plate 12 is located inside the fourth side plate 16 and is bonded to it. The connections between the extension plate 12 and the first side plate 13, the first side plate 13 and the second side plate 14, and the second side plate 14 and the third side plate 15 are also connected. The connection points, as well as the connection points between the third side plate 15 and the fourth side plate 16, all have a second fold line 17. The connection points between the first side plate 13 and the first bottom plate 21, the second side plate 14 and the second bottom plate 22, the third side plate 15 and the third bottom plate 23, and the fourth side plate 16 and the fourth bottom plate 24 all have a first fold line 3. The second side plate 14 and the third side plate 15 are both provided with a horizontal easy-tear line 11, and the horizontal easy-tear line 11 of the second side plate 14 and the horizontal easy-tear line 11 of the third side plate 15 are connected.

[0046] The bottom panel 2 of the box is pre-connected to its corresponding side panel as a single unit, eliminating the need for additional independent bottom components. Assembly of the bottom panel 2 is completed simply by folding along the first fold line 3 and engaging the snap-fit ​​mechanism. This significantly simplifies the production process and user operation, reduces complexity during processing and use, and improves efficiency in large-scale production. The multi-layered bottom panels form a composite support structure through snap-fit ​​connections. Compared to traditional single-panel or simple overlapping designs, this structure offers significantly improved overall thickness and structural stability, allowing it to withstand greater vertical pressure. This effectively solves the problem of deformation and damage to the bottom panel 2 caused by the weight of the contents, extending the lifespan of the cardboard box. The bottom panel 2 is directly and securely connected to the body 1 via the first fold line 3, avoiding the design flaws of separate bottom panels and body 1 in existing technologies. This fundamentally prevents the bottom panel 2 from being lost during production, transportation, and use. This ensures that users can easily switch between functional states (such as converting it into a container, stand, or heat-resistant cup sleeve) without the need for additional components, enhancing the continuity and reliability of the user experience. Furthermore, the entire cardboard box can be laid flat during transportation, reducing space occupation. It can be assembled according to needs when it is needed, avoiding the risk of traditional cardboard boxes being squeezed, deformed, or even damaged because they are already in a formed state before transportation.

[0047] The first base plate 21, the second base plate 22, the third base plate 23, and the fourth base plate 24 have the same structure, each including a plate body 210 and a first locking part 211. One side of the plate body 210 is connected to the box body 1 through a first fold line 3, and the other side of the plate body 210 is connected to the first locking part 211 through a third fold line 213. The plate body 210 has a first locking hole 212. The first locking part 211 of the first base plate 21 engages with the first locking hole 212 of the second base plate 22. The first locking part 211 of the second base plate 22 engages with the first locking hole 212 of the third base plate 23. The first locking part 211 of the third base plate 23 engages with the first locking hole 212 of the fourth base plate 24. The first locking part 211 of the fourth base plate 24 engages with the first locking hole 212 of the first base plate 21.

[0048] During assembly, each base plate is folded inward along the first fold line 3 (perpendicular to the side wall of the box body 1), and then the first locking part 211 is bent along the third fold line 213. The first locking part 211 and the first locking hole 212 engage accordingly: the first locking part 211 of the first base plate 21 is inserted into the first locking hole 212 of the second base plate 22, the first locking part 211 of the second base plate 22 is inserted into the first locking hole 212 of the third base plate 23, and so on, until finally the first locking part 211 of the fourth base plate 24 is inserted into the first locking hole 212 of the first base plate 21, forming a closed-loop locking structure that connects the beginning and end, making the bottom of the box 2 tightly closed.

[0049] The four base plates employ identical structural designs, eliminating the need for users to distinguish between specific base plates and their corresponding positions. Assembly can be completed simply by inserting the first locking part 211 into the first locking hole 212, significantly reducing operational difficulty and the probability of errors. This design is particularly suitable for rapid production and everyday use. The closed-loop locking design allows the four base plates to mutually restrain each other and share forces collaboratively, dispersing vertical pressure compared to single assembly points or non-closed-loop designs. Simultaneously, the interlocking method of inserting the first locking part 211 into the first locking hole 212 increases the contact area and friction, preventing loosening caused by force in one direction. This allows for stable support of heavier items and reduces the risk of deformation of the box bottom 2.

[0050] The cross-sectional area of ​​the box body 1 increases from the box opening to the box bottom 2. When used as a heat-resistant cup sleeve, the box must first be inverted, and the four bottom plates of the box bottom 2 must be bent inward. At this time, the shape of the box body 1 becomes that the wide end faces up and the narrow end faces down, perfectly matching the shape of a traditional paper cup that is wider at the top and narrower at the bottom. When the paper cup is inserted into the cup sleeve through the opening at the wide end (original box bottom 2), it can easily pass through because the size of the wide end of the cup sleeve is close to the size of the wide end of the paper cup (cup opening). As the paper cup is inserted downward, the cross-sectional area of ​​the cup sleeve gradually decreases (in the direction of the original box opening), synchronized with the decreasing trend of the cross-sectional area of ​​the paper cup. Finally, the outer wall of the paper cup fits tightly against the four bottom plates of the box bottom 2, forming a stable wrapping structure to prevent shaking or falling off. After being inverted, the four base plates of the original box bottom 2 can be disassembled and bent to form a ring-shaped support structure. On the one hand, the bent base plates can further fix the position of the paper cup and prevent it from sliding up and down inside the box sleeve. On the other hand, the grip gap formed by the base plates matches the shape of the wide end of the box body 1 facing upwards, making it convenient for users to avoid the high-temperature area of ​​the paper cup when holding it, maximizing the anti-scalding effect. Moreover, the bent base plates guide the insertion of the paper cup, making it easier for the paper cup to pass through. The increasing cross-sectional design of the box body 1 only activates the adaptation function advantage when inverted in the anti-scalding cup sleeve scenario. In the traditional storage scenario (non-inverted state), the shape of the box opening being narrow and the box bottom 2 being wide can improve the storage stability. When placing items, the center of gravity is more biased towards the wide end of the box bottom 2, reducing the risk of tipping over. In the support function scenario, the contact area of ​​the wide end of the box bottom 2 is larger, and the stability is stronger when supporting mobile phones and tablets, realizing the reuse value of one shape adapting to three functions.

[0051] Both the box body 1 and the box bottom 2 are made of laminated kraft paper. This provides heat insulation and waterproofing, and also offers sufficient stiffness and load-bearing capacity.

[0052] Example 2:

[0053] like Figures 7 to 9 As shown, the difference between this embodiment and Embodiment 1 is that:

[0054] It also includes a partition 4, a first connecting part 5, a second connecting part 6, a second locking part 7, and a third locking part 8. The first side plate 13 has a second locking hole 18, and the fourth side plate 16 has a third locking hole 19. The third locking hole 19 is located above the second locking hole 18. One end of the partition 4 has a first connecting part 5 and a second connecting part 6. The first connecting part 5 is located above the second connecting part 6. The first connecting part 5 is connected to the third side plate 15, and the second connecting part 6 is connected to the second side plate 14. The other end of the partition 4 has a second locking part 7 and a third locking part 8. The second locking part 7 is located above the third locking part 8. The second locking part 7 engages with the third locking hole 19, and the third locking part 8 engages with the second locking hole 18.

[0055] When the cardboard box is used as a container, the fixing structure of the partition 4 directly serves to divide the space: the partition 4 spans the interior of the box body 1, dividing the original single space into independent areas on both sides of the partition 4. Because the partition 4 is fixed by double connection and double snap-fit, the separated space has strong independence, and even if the box body 1 is tilted or shaken, the items on both sides will not collide or mix with each other.

[0056] When the cardboard box is folded along the horizontal tear line 11 to transform into a support structure, the partition 4 becomes the core reinforcement of the support structure: after folding, the box body 1 below the tear line forms the basic support surface, while the partition 4 is equivalent to forming a diagonal reinforcing rib inside the support surface. When devices such as mobile phones and tablets are placed on the support surface, the weight of the devices will be transferred to the partition 4 through the support surface. The partition 4 uses its own rigidity and fixed structure to distribute the force to the side panels around the box body 1, preventing the support surface from bending and deforming due to excessive local stress, and at the same time preventing the sides of the box body 1 from collapsing inward due to stress, significantly improving the stability of the support.

[0057] The partition 4 is fixed to the side panel of the box body 1 through a pre-set connection part. It is already integrated into the inside of the box body 1 at the factory. Users do not need to install or disassemble it separately. When using it, they can directly enjoy the space division or support reinforcement function, avoiding the problems of the independent partition 4 being easy to lose and troublesome to install.

[0058] The first connecting part 5 and the second connecting part 6 both have a fourth fold line 9 at their connection points with the partition 4, and the second latching part 7 and the third latching part 8 both have a fifth fold line 10 at their connection points with the partition 4. The partition 4 has a sixth fold line 41, which divides the partition 4 into left and right parts. The fourth fold line 9 facilitates the left and right bending of the partition 4, the fifth fold line 10 facilitates the alignment of the second latching part 7 and the third latching part 8 with the third latching hole 19 and the second latching hole 18, and the sixth fold line 41 allows the partition 4 to be attached to the two side panels of the box body 1 when it is not in use.

[0059] The partition 4, first connecting part 5, second connecting part 6, second locking part 7, and third locking part 8 are integrally formed and made of coated kraft paper. This integral forming eliminates the need for additional assembly or splicing, reducing production difficulty and cost, and improving mass production efficiency. Furthermore, the absence of splicing gaps prevents parts from falling off or loosening. Combined with the strength of the coated kraft paper, the overall load-bearing capacity and resistance to deformation of the partition 4 are enhanced, ensuring stable separation and support functions.

[0060] Example 3:

[0061] like Figures 10 to 12 As shown, the difference between this embodiment and Embodiment Two is that:

[0062] The lower parts of the first side panel 13, the second side panel 14, the third side panel 15, and the fourth side panel 16 all have an arc-shaped easy-tear line 110, which is located below the horizontal easy-tear line 11.

[0063] When straws or chopsticks need to be placed, the corresponding easy-tear line area of ​​the side panel 16 is bent inwards along the arc-shaped easy-tear line 110 at the bottom of the first to fourth side panels 16 to form a support platform, while providing an opening for slender items such as straws and chopsticks to be inserted and placed. No additional accessories are required; simply tearing the arc-shaped easy-tear line 110 adds item support functionality, adapting to the needs of catering scenarios.

[0064] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A paper box structure, characterized in that: Including the box body and the bottom; The bottom of the box body is connected to the box bottom via a first fold line; The box body has a horizontal tear line, and the two ends of the horizontal tear line are respectively located on the two adjacent side walls of the box body; The bottom of the box includes a first bottom plate, a second bottom plate, a third bottom plate, and a fourth bottom plate; The first base plate is engaged with the second base plate, the second base plate is engaged with the third base plate, the third base plate is engaged with the fourth base plate, and the fourth base plate is engaged with the first base plate.

2. The paper box structure according to claim 1, characterized in that: The box body includes an extension plate, a first side plate, a second side plate, a third side plate, and a fourth side plate connected sequentially from left to right; The extension plate, the first side plate, the second side plate, the third side plate, and the fourth side plate form the box body. The extension plate is located inside the fourth side plate and is bonded to the fourth side plate. The connection points between the extension plate and the first side plate, the first side plate and the second side plate, the second side plate and the third side plate, and the third side plate and the fourth side plate all have second fold lines. The first fold line is present at the connection points of the first side plate and the first bottom plate, the second side plate and the second bottom plate, the third side plate and the third bottom plate, and the fourth side plate and the fourth bottom plate. Both the second and third side panels are provided with the horizontal easy-tear lines, and the horizontal easy-tear lines of the second and third side panels are connected.

3. The paper box structure according to claim 1, characterized in that: The first base plate, the second base plate, the third base plate, and the fourth base plate have the same structure, each including a plate body and a first locking part; One side of the plate is connected to the box body via a first fold line, and the other side of the plate is connected to a first card portion via a third fold line; The plate has a first card hole; The first locking part of the first base plate engages with the first locking hole of the second base plate; The first locking part of the second base plate engages with the first locking hole of the third base plate; The first locking part of the third base plate engages with the first locking hole of the fourth base plate; The first locking part of the fourth base plate engages with the first locking hole of the first base plate.

4. The paper box structure according to claim 1, characterized in that: The cross-sectional area of ​​the box increases from the opening to the bottom.

5. The paper box structure according to claim 1, characterized in that: The box body and bottom are both made of laminated kraft paper.

6. The paper box structure according to claim 2, characterized in that: It also includes a partition, a first connecting part, a second connecting part, a second locking part, and a third locking part; The first side plate has a second locking hole, and the fourth side plate has a third locking hole, which is located above the second locking hole; One end of the partition has a first connecting portion and a second connecting portion, with the first connecting portion located above the second connecting portion; The first connecting part is connected to the third side plate, and the second connecting part is connected to the second side plate; The other end of the partition has a second locking part and a third locking part, with the second locking part located above the third locking part; The second card part engages with the third card slot, and the third card part engages with the second card slot.

7. The paper box structure according to claim 6, characterized in that: Both the first and second connecting parts have a fourth fold line at the connection points with the partition plate; Both the second and third card portions have a fifth fold line at the connection point with the partition; The partition has a sixth fold line, which divides the partition into left and right parts.

8. The paper box structure according to claim 7, characterized in that: The partition, the first connecting part, the second connecting part, the second locking part, and the third locking part are integrally formed and are made of coated kraft paper.

9. The paper box structure according to claim 7, characterized in that: The lower part of the first side panel, the second side panel, the third side panel, and the fourth side panel all have an arc-shaped easy-tear line; The curved easy-tear line is located below the horizontal easy-tear line.

Images