Corrugated carton convenient to fold and store

By combining positioning rods and insertion slots with magnetic adsorption, the problem of fixed corrugated cardboard box size and complicated operation is solved, achieving fast and stable folding and storage, saving space and maintaining environmental friendliness.

CN224241507UActive Publication Date: 2026-05-15ZHENJIANG HELIJINGHONG PACKAGING TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHENJIANG HELIJINGHONG PACKAGING TECH CO LTD
Filing Date
2025-06-23
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Traditional corrugated cardboard boxes have fixed dimensions, making it difficult to flexibly adapt to the packaging needs of items of different sizes. Furthermore, existing adjustable cardboard boxes have complex designs and are inconvenient to operate, making it impossible to quickly and easily achieve stable folding and storage.

Method used

The positioning rod is embedded in the positioning groove to lock the end of the folding plate, and the insertion rod is inserted into the slot to achieve mechanical positioning. At the same time, the iron sheet is attracted by the magnet to form double fixation, ensuring that the carton is folded into a compact flat plate.

Benefits of technology

It enables corrugated cardboard boxes to be folded and stored quickly and stably, saving space, reducing production costs, maintaining environmental friendliness, and resisting shock during transportation without falling apart.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224241507U_ABST
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Abstract

The utility model discloses a corrugated carton convenient to fold and store, and relates to the technical field of corrugated cartons, the corrugated carton comprises two groups of side plates, a folding plate, a first patch and a second patch, the two groups of side plates are symmetrically arranged, and first connecting blocks are fixedly connected to the two sides of the side plates; the folding plates are rotationally connected to the outer portion of the first connecting block, the tail ends of the two sets of folding plates on one side are rotationally connected with a second connecting block, the tail ends of the two sets of folding plates on the other side are rotationally connected with a third connecting block, and a butt joint mechanism is installed between the second connecting block and the third connecting block. The first patch and the second patch are fixedly connected to the outer portions of the two sets of folding plates located on the same side correspondingly, and an adsorption mechanism is installed between the first patch and the insertion rod. According to the device, the positioning rods are embedded into the positioning grooves to lock the tail ends of the folding plates to prevent loosening, mechanical positioning is achieved by inserting the inserting rods into the inserting grooves after folding, meanwhile, the magnets attract the iron sheets to form double fixing, and the corrugated carton is folded into a compact flat plate and is stable and not scattered.
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Description

Technical Field

[0001] This utility model relates to the field of corrugated cardboard box technology, and more specifically, to a corrugated cardboard box that is easy to fold and store. Background Technology

[0002] Traditional corrugated cardboard boxes typically have a fixed structure and limited dimensions, making them inflexible in adapting to the packaging needs of items of different sizes or effectively saving warehousing and transportation space. When item dimensions change or space utilization needs to be optimized, different cardboard box sizes are often required, which not only increases packaging costs and inventory management complexity but also wastes resources. Although there are a few adjustable-size cardboard box designs on the market, their structures are often quite complex, relying on additional metal or plastic adjustment parts. This not only increases manufacturing costs but also contradicts the environmentally friendly characteristics of corrugated cardboard. Furthermore, the adjustment process is usually cumbersome, requiring tools or multiple steps, making it difficult to meet the practical application needs for quick and convenient adjustments.

[0003] Existing adjustable cardboard box size adjustment or folding mechanisms generally suffer from inconvenient operation, unstable positioning, or complex structure. Some designs rely on manually inserting and removing pins or adjusting multiple connectors to achieve size changes or folding, which is time-consuming and labor-intensive. Others use complex slide rail or locking designs, which increase production difficulty and the risk of failure. These solutions either make it difficult to achieve quick one-handed operation or cannot provide reliable automatic locking after adjustment or folding, making them prone to accidental displacement or loosening during transportation or storage, and failing to guarantee the stability and convenience of the folded storage state. Therefore, in order to address the above technical problems, a corrugated cardboard box that is convenient for folding and storage is proposed here. Utility Model Content

[0004] The purpose of this utility model is to provide a corrugated cardboard box that is easy to fold and store. The positioning rod is embedded in the positioning groove to lock the end of the folding plate to prevent it from loosening. After folding, the insertion rod is inserted into the slot to achieve mechanical positioning. At the same time, the magnet attracts the iron sheet to form a double fixation, so that the corrugated cardboard box can be folded into a compact flat plate and is stable and does not fall apart.

[0005] This utility model is achieved through the following technical solution:

[0006] A corrugated cardboard box that is easy to fold and store includes:

[0007] The side plates are in two sets and are arranged symmetrically, and the two sides of the side plates are fixedly connected to the first connecting blocks;

[0008] A folding plate is rotatably connected to the outside of the first connecting block. The ends of two sets of folding plates on one side are rotatably connected to a second connecting block, and the ends of two sets of folding plates on the other side are rotatably connected to a third connecting block. A docking mechanism is installed between the second connecting block and the third connecting block.

[0009] The first patch and the second patch are respectively fixedly connected to the outside of the two sets of folded plates located on the same side, and an adsorption mechanism is installed between the first patch and the insert rod.

[0010] Preferably, the first connecting block has a first mounting groove on its outer side, and the second and third connecting blocks have a second mounting groove on their outer sides. A rotating rod is fixedly connected to the inner side of both the first and second mounting grooves.

[0011] Preferably, the folding plate is rotatably connected to the outside of the rotating rod.

[0012] Preferably, the docking mechanism includes a positioning rod and a positioning groove. The positioning rod is fixedly connected to the outside of the second connecting block, and the positioning groove is opened on the outside of the third connecting block, and the positioning groove and the positioning rod are matched.

[0013] Preferably, the adsorption mechanism includes a rod, a fixed magnet, a slot, and an iron plate. The rod and the fixed magnet are both fixedly connected to the outside of the first patch, and there are two sets of rods installed on both sides of the fixed magnet.

[0014] Preferably, the slots are formed on the outside of the second patch, and there are two sets of slots arranged symmetrically. The iron sheet is fixedly connected to the outside of the second patch, and the slots are installed on both sides of the iron sheet.

[0015] Preferably, the insertion rod and the slot are matched, and the fixing magnet and the iron sheet are matched.

[0016] The technical solution of this utility model has at least the following beneficial effects:

[0017] This easy-to-fold corrugated cardboard box features a simple locking mechanism where the folding frame is secured by inserting a positioning rod into a positioning slot. Combined with mechanical positioning via a rod inserted into the slot and a dual fixing method using a magnetically attached metal plate, the box automatically forms a tightly folded flat structure when folded, effectively preventing loosening and deformation. The operation requires no tools or complicated steps; simply push the side panel with one hand to complete the folding and locking process, significantly improving storage efficiency. Furthermore, the folded thickness is significantly reduced, saving storage and transportation space. It maintains the pure corrugated cardboard material, reducing production costs and being environmentally friendly and recyclable. The double locking mechanism ensures shock resistance during transportation, and the box can be quickly restored to its original shape by reversing the operation when unfolded, balancing stability and convenience. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0020] Figure 3 for Figure 1 Enlarged view of B in the middle;

[0021] Figure 4 for Figure 1 Enlarged view of C;

[0022] Figure 5 for Figure 1 Enlarged view of D;

[0023] Icons: 1. Side plate; 2. First connecting block; 3. Folding plate; 4. First mounting slot; 5. Rotating rod; 6. Second connecting block; 7. Third connecting block; 8. Second mounting slot; 9. Positioning rod; 10. Positioning slot; 11. First patch; 12. Insert rod; 13. Fixing magnet; 14. Second patch; 15. Slot; 16. Iron sheet. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] Example

[0026] This application discloses a corrugated cardboard box that is easy to fold and store, including a side panel 1, a folding panel 3, a first patch 11, and a second patch 14. The side panels 1 serve as the main supporting structure of the box, and there are two sets of them arranged symmetrically to provide a stable box frame. The two sides of the side panels 1 are fixedly connected to the first connecting blocks 2, which serve as the pivot components for the folding action and play a key role in connecting the side panels 1 and the folding panels 3.

[0027] The folding plate 3 is rotatably connected to the outside of the first connecting block 2, achieving the foldable characteristic of the box through this connection method. On one side, the ends of two sets of folding plates 3 are rotatably connected to the second connecting block 6, and on the other side, the ends of two sets of folding plates 3 are rotatably connected to the third connecting block 7. These connecting blocks constitute the terminal connection points of the folding system. The outside of the first connecting block 2 has a first mounting groove 4, and the outside of the second connecting block 6 and the third connecting block 7 has a second mounting groove 8. These mounting grooves provide precise mounting positions for the rotating components. A rotating rod 5 is fixedly connected to the inside of both the first mounting groove 4 and the second mounting groove 8. This rotating rod 5 serves as the axis of the folding movement, ensuring smooth folding action. The folding plate 3 is rotatably connected to the outside of the rotating rod 5; this connection method ensures both structural strength and flexible rotation functionality.

[0028] like Figure 3 as well as Figure 4 As shown, a docking mechanism is installed between the second connecting block 6 and the third connecting block 7. This mechanism includes a positioning rod 9 and a positioning groove 10. The positioning rod 9 is fixedly connected to the outside of the second connecting block 6 as an active locking component; the positioning groove 10 is opened on the outside of the third connecting block 7 as a passive receiving component. The matching design between the positioning groove 10 and the positioning rod 9 ensures accurate positioning and secure locking in the folded state.

[0029] like Figure 5 As shown, the first patch 11 and the second patch 14 are respectively fixedly connected to the outside of two sets of folding plates 3 located on the same side, and these patches serve as the mounting base for the adsorption mechanism. An adsorption mechanism is installed between the first patch 11 and the insert rod 12. This mechanism includes the insert rod 12, a fixing magnet 13, a slot 15, and an iron plate 16. Both the insert rod 12 and the fixing magnet 13 are fixedly connected to the outside of the first patch 11. There are two sets of insert rods 12 installed on both sides of the fixing magnet 13. This arrangement achieves a synergistic effect of mechanical positioning and magnetic adsorption. Two sets of slots 15 are opened on the outside of the second patch 14 and are symmetrically arranged, forming a precise fit with the insert rod 12. The iron plate 16 is fixedly connected to the outside of the second patch 14, and the slots 15 are installed on both sides of the iron plate 16. This layout optimizes space utilization. The matching design between the insert rod 12 and the slot 15 ensures the accuracy of mechanical positioning, while the matching characteristics between the fixing magnet 13 and the iron plate 16 provide a reliable magnetic adsorption effect.

[0030] The working principle of the convenient folding and storage corrugated cardboard box based on the embodiment is as follows: When the corrugated cardboard box needs to be stored, the operator pushes the symmetrically distributed side panels 1 inward to fold them together. The first connecting blocks 2 fixed on both sides of the side panels 1 move accordingly, causing the folding plates 3 rotatably connected to them to begin rotating and folding around the rotating rod 5. The rotating rod 5 ensures the smooth progress of the folding action. During the process of the folding plates 3 gradually closing and folding together, a key step is that the operator actively and accurately embeds the positioning rod 9 on the second connecting block 6 into the corresponding positioning groove 10 on the third connecting block 7. This embedding action, through the docking mechanism, firmly locks the ends of the two folding plates 3 together, providing a stable base for the folded state. The basic frame provides support to prevent the structure from becoming loose. Then, as the folding panels 3 are fully folded into place, the first patch 11 and the second patch 14, which are fixed on the same side of their exterior, approach each other and fit tightly together. At this time, the two sets of insert rods 12 on the first patch 11 automatically insert into the symmetrically arranged slots 15 on the second patch 14, forming a precise mechanical positioning. At the same time, the fixing magnets 13 on the first patch 11 generate a strong attraction force, firmly adsorbing the iron sheet 16 on the second patch 14. Through the locking of the positioning rod 9 and the dual action of the insert rods 12 inserting into the slots 15 and the fixing magnets 13 adsorbing the iron sheet 16, the entire carton is stably kept in a compact flat storage state, which is convenient for storage and transportation.

[0031] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corrugated cardboard box that is easy to fold and store, characterized in that, include: Side plates (1), there are two sets of them and they are arranged symmetrically. The two sides of the side plates (1) are fixedly connected to the first connecting blocks (2). Folding plate (3), which is rotatably connected to the outside of the first connecting block (2), wherein the ends of the two sets of folding plates (3) on one side are rotatably connected to the second connecting block (6), and the ends of the two sets of folding plates (3) on the other side are rotatably connected to the third connecting block (7), and a docking mechanism is installed between the second connecting block (6) and the third connecting block (7). The first patch (11) and the second patch (14) are respectively fixedly connected to the outside of the two sets of folding plates (3) located on the same side, and an adsorption mechanism is installed between the first patch (11) and the insert (12).

2. The corrugated cardboard box for easy folding and storage according to claim 1, characterized in that: The first connecting block (2) has a first mounting groove (4) on its outside, and the second connecting block (6) and the third connecting block (7) have a second mounting groove (8) on their outside. A rotating rod (5) is fixedly connected to the inside of the first mounting groove (4) and the second mounting groove (8).

3. The corrugated cardboard box for easy folding and storage according to claim 2, characterized in that: The folding plate (3) is rotatably connected to the outside of the rotating rod (5).

4. The corrugated cardboard box for easy folding and storage according to claim 1, characterized in that: The docking mechanism includes a positioning rod (9) and a positioning groove (10). The positioning rod (9) is fixedly connected to the outside of the second connecting block (6), and the positioning groove (10) is opened on the outside of the third connecting block (7), and the positioning groove (10) matches the positioning rod (9).

5. The corrugated cardboard box for easy folding and storage according to claim 1, characterized in that: The adsorption mechanism includes a plug (12), a fixed magnet (13), a slot (15), and an iron plate (16). The plug (12) and the fixed magnet (13) are both fixedly connected to the outside of the first patch (11), and there are two sets of plugs (12) installed on both sides of the fixed magnet (13).

6. The corrugated cardboard box for easy folding and storage according to claim 5, characterized in that: The slot (15) is opened on the outside of the second patch (14), and there are two sets of slots (15) arranged symmetrically. The iron plate (16) is fixedly connected to the outside of the second patch (14), and the slot (15) is installed on both sides of the iron plate (16).

7. The corrugated cardboard box for easy folding and storage according to claim 6, characterized in that: The insertion rod (12) is matched with the slot (15), and the fixing magnet (13) is matched with the iron plate (16).