Inner box of a packaging box

By introducing inflatable columns, dividers, and magnetic strips into the inner box of the packaging, the problems of the inner box's inability to adjust its capacity and insufficient protective performance are solved, achieving the effect of flexibly adapting to product size and simplifying operation.

CN224428368UActive Publication Date: 2026-06-30WENZHOU XINJIE PAPER PROD CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENZHOU XINJIE PAPER PROD CO LTD
Filing Date
2025-07-09
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing packaging boxes cannot flexibly adjust the inner box to accommodate the product size, and their protective performance is insufficient, making the product prone to shaking and collision damage during transportation.

Method used

An inner box structure was designed, including a box body, inflatable columns, first and second partitions, card slots, magnetic strips, and other components. The inflatable columns provide cushioning, the partitions divide the space, the magnetic strips simplify opening and closing, and the lifting frame facilitates carrying, achieving flexible adjustment and enhanced protection.

Benefits of technology

It achieves flexible accommodation by matching the inner box with the product size, reduces shaking and collision, provides cushioning protection, improves versatility and protective performance, and simplifies the operation process.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the technical field and discloses an inner box for a packaging box, including a box body. A bottom pad is placed at the bottom of the box body, and multiple sets of inflatable columns are arranged on the inner wall of the box body. A first partition plate is placed between the gaps between the multiple sets of inflatable columns, and a first slot is formed on the first partition plate. A second partition plate is installed on one side of the first partition plate, and multiple sets of second slots are formed on the second partition plate. This utility model divides the box body into multiple spaces through the inflatable columns, the first partition plate, the first slot, the second partition plate, and the second slots, making the inner box size match the product, reducing the likelihood of shaking or collision during transportation, thereby avoiding product damage. The inner box's accommodating space can be flexibly adjusted according to the product size, improving the versatility of the inner box. The inflatable columns provide a certain degree of cushioning for the product placed inside, and the gas filling forms flexible support.
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Description

Technical Field

[0001] This utility model relates to the field of packaging box technology, specifically to an inner box of a packaging box. Background Technology

[0002] Packaging boxes are containers or wrappers used to hold, protect, and display products. They are widely used in various fields such as food, pharmaceuticals, electronic products, cosmetics, and gifts.

[0003] The inner box of a packaging box refers to a packaging component located inside the overall packaging structure that directly contacts the product or serves as the first layer of protection or support for the product. Typically, it is developed to further enhance protection, separate the product, improve the display effect, or optimize the user experience, making it easy to use.

[0004] Chinese Patent Publication No. CN215324487U discloses "An Inner Tray for a Packaging Box," comprising an upper cardboard layer, a middle cardboard layer, and a lower cardboard layer with identical shape and size, which are hot-pressed together from top to bottom. A sheet is cut from the upper cardboard layer, and a sheet is cut from the middle cardboard layer. The left side of sheet one is connected to the upper cardboard layer, and the right side of sheet two is connected to the lower cardboard layer. Sheets one and two overlap vertically and form a groove for placing items under the action of a hot-pressing mold. A through-hole is cut into the lower cardboard layer to allow space for the groove, and side sheets are connected to the front and back sides of the through-hole. The side sheets are perpendicular to the lower cardboard layer, and their bottom edges are connected to sheets one and two. This inner tray is convenient and quick to manufacture. Sheets one, two, and the side sheets are hot-pressed to form a groove for placing items, providing good support.

[0005] The aforementioned existing technology utilizes sheet one, sheet two, and side sheets to thermoform grooves for placing items, providing support. However, the existing inner box cannot be divided into multiple spaces and lacks sufficient cushioning. When the inner box size does not match the product, the product is prone to shaking and collision during transportation, leading to product damage. It is also impossible to flexibly adjust the inner box's capacity according to the product's size, reducing the inner box's versatility. Furthermore, it offers low protection for the product inside the inner box and cannot effectively prevent damage during transportation. Utility Model Content

[0006] The purpose of this utility model is to provide an inner box for a packaging box, so as to solve the problems mentioned in the background art, such as the inability to flexibly adjust the inner box's accommodating space according to the size of the product and the low protective performance of the product inside the inner box.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an inner box of a packaging box, including a box body, a bottom pad placed at the bottom of the box body, and multiple sets of inflatable columns arranged on the inner wall of the box body, a first partition plate placed in the gap between the multiple sets of inflatable columns, and a first slot opened on the first partition plate, a second partition plate installed on one side of the first partition plate, and multiple sets of second slots opened on the second partition plate.

[0008] Preferably, the box body has a first groove on both sides, a first lifting frame is installed in the first groove, a recessed hole is opened in the first lifting frame, and a second lifting frame is installed in the first lifting frame, and the inner wall of the second lifting frame is provided with an anti-slip strip.

[0009] Preferably, the upper end of the box body is provided with a first magnetic strip, the upper end of the first magnetic strip is placed with a cover plate, the contact point between the cover plate and the box body is provided with a second magnetic strip that attracts the first magnetic strip, and a top pad is provided inside the cover plate.

[0010] Preferably, the bottom pad matches the box body, and the first partition plate and the second partition plate are arranged crosswise.

[0011] Preferably, there are multiple sets of the first card slots, with multiple sets of the first card slots opened at the upper end of the first partition plate; there are multiple sets of the second card slots, with multiple sets of the second card slots opened at the lower end of the second partition plate; and the first card slots and the second card slots are identical.

[0012] Preferably, there are multiple sets of inflatable columns, which are equidistantly arranged inside the box, and the gap between two sets of inflatable columns is consistent with the width of the first partition plate and the second partition plate.

[0013] Preferably, the first lifting frame is rotatably disposed in the first groove, and the second lifting frame is rotatably disposed in the first lifting frame.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0015] First, this utility model divides the box into multiple spaces by setting an inflatable column, a first partition plate, a first slot, a second partition plate, and a second slot, so that the inner box size matches the product, reducing the possibility of shaking or collision during transportation, thereby avoiding product damage. The inner box's capacity can be flexibly adjusted according to the product's size, improving the versatility of the inner box.

[0016] Secondly, this utility model provides a certain buffering capacity for the product placed inside by setting up inflatable columns. The flexible support is formed by gas filling, which is suitable for fragile products. When the external impact occurs, the gas compression can absorb the vibration energy and reduce the direct collision of the product. At the same time, the gaps between multiple inflatable columns provide a partition structure, which facilitates the placement of the first partition plate and the second partition plate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the first and second partition plates of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the second lifting frame and anti-slip strip of this utility model.

[0021] In the diagram: 1. Box body; 2. Bottom pad; 3. Inflatable column; 4. First partition plate; 5. First slot; 6. Second partition plate; 7. Second slot; 8. First groove; 9. First lifting frame; 10. Recessed hole; 11. Second lifting frame; 12. Anti-slip strip; 13. First magnetic strip; 14. Cover plate; 15. Top pad; 16. Second magnetic strip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 An inner box of a packaging box includes a box body 1, a bottom pad 2 placed at the bottom of the box body 1, and multiple sets of inflatable columns 3 arranged on the inner wall of the box body 1. A first partition plate 4 is placed in the gap between the multiple sets of inflatable columns 3, and a first slot 5 is opened on the first partition plate 4. A second partition plate 6 is installed on one side of the first partition plate 4, and multiple sets of second slots 7 are opened on the second partition plate 6.

[0024] Through the above technical solution, the bottom pad 2 at the bottom of the box 1 and the multiple sets of inflatable columns 3 on the inner wall together form a three-dimensional buffer protection system. The bottom pad 2 is in direct contact with the bottom of the box 1 and can absorb the impact force from below. During transportation, when the packaging box is subjected to bumps, drops, etc., the bottom pad 2 effectively reduces the impact force on the product inside the box through its own elastic deformation. The multiple sets of inflatable columns 3 on the inner wall provide cushioning for the product in the horizontal direction through the compression and expansion of the internal gas. For example, in the event of a collision during handling, the inflatable columns 3 will absorb the collision energy like an air cushion, preventing the product from directly impacting the inner wall of the box 1, thus comprehensively ensuring the safety of the product during transportation and storage. The gaps between the multiple sets of inflatable columns 3 are used to place the first partition plate 4, allowing the internal space of the inner box to be flexibly adjusted according to the shape, size, and quantity of the product. For products with irregular shapes or a large quantity, the inner box can be divided into multiple independent small spaces by adding or removing the first partition plate 4. Each space is used to place different products or product components, preventing products from squeezing, rubbing, and colliding with each other. At the same time, the first slot 5 on the first partition plate 4 and the multiple sets of second slots 7 on the second partition plate 6 further enhance the flexibility of the partition. The first slot 5 and the second slot 7 can cooperate with each other to easily install the second partition plate 6 on the first partition plate 4. The position and angle of the second partition plate 6 can be adjusted according to actual needs to achieve diversified partitioning of the inner box space in the vertical and horizontal directions to adapt to the packaging needs of products with various complex shapes. Utilizing the fixing effect of the first slot 5 and the second slot 7, the partition can restrain the products and prevent them from being damaged due to shaking.

[0025] Specifically, the box body 1 has a first groove 8 on both sides, a first lifting frame 9 is installed in the first groove 8, a recess 10 is opened in the first lifting frame 9, and a second lifting frame 11 is installed in the first lifting frame 9. The inner wall of the second lifting frame 11 is provided with an anti-slip strip 12.

[0026] Through the above technical solution, the first groove 8 and the first lifting frame 9 opened on both sides of the box body 1 provide users with a convenient way to lift. The presence of the first groove 8 allows the first lifting frame 9 to be firmly installed on the box body 1. When it is necessary to move the inner box containing the product, the user can directly hold the second lifting frame 11 in the first lifting frame 9, which is more labor-saving than directly moving the box body 1. The recessed hole 10 opened in the first lifting frame 9 makes it easy to push out the second lifting frame 11 for use, so that the user can flexibly choose different lifting methods according to actual needs. When the inner box is heavy and a more labor-saving lifting method is required, the second lifting frame 11 can be flipped out from the first lifting frame 9 and lifted through the second lifting frame 11, which meets the user's needs in different scenarios and improves the practicality of the product.

[0027] Specifically, a first magnetic strip 13 is provided at the upper end of the box body 1, a cover plate 14 is placed at the upper end of the first magnetic strip 13, a second magnetic strip 16 is provided at the contact point between the cover plate 14 and the box body 1, which is attracted to the first magnetic strip 13, and a top pad 15 is provided inside the cover plate 14.

[0028] Through the above technical solution, the first magnetic strip 13 at the upper end of the box body 1 and the second magnetic strip 16 of the cover plate 14 attract each other to form a magnetic connection structure. Compared with the traditional buckle, snap-fit ​​or tape sealing method, the magnetic connection does not require complicated operation steps. The user only needs to bring the cover plate 14 close to the box body 1, and the magnetic strip will automatically attract and achieve quick closure. When opening, it can be separated with a little force, which greatly simplifies the opening and closing process of the packaging.

[0029] Specifically, the bottom pad 2 matches the box body 1, and the first partition plate 4 and the second partition plate 6 are arranged crosswise.

[0030] Through the above technical solution, the bottom pad 2 matches the box body 1, which means that the bottom pad 2 can completely cover the bottom of the box body 1 without leaving gaps, effectively enhancing the cushioning performance of the bottom of the inner box. During transportation, the packaging box may be subjected to impact forces from below, such as drops during handling, bumps and vibrations during vehicle driving, etc. The first partition plate 4 and the second partition plate 6 are cross-set, which improves the flexibility of the internal space of the inner box and the product fixing effect. Through cross combination, the inner box space can be divided into multiple independent areas of different sizes and shapes to adapt to the packaging needs of products of different shapes and sizes.

[0031] Specifically, there are multiple sets of first card slots 5, with multiple sets of first card slots 5 opened at the upper end of the first partition plate 4; there are multiple sets of second card slots 7, with multiple sets of second card slots 7 opened at the lower end of the second partition plate 6; and the first card slots 5 and the second card slots 7 are identical.

[0032] Through the above technical solution, the design of multiple sets of first card slots 5 and second card slots 7 gives the inner box a high degree of flexibility in assembly. Since there are many card slots and they are distributed at the upper end of the first partition plate 4 and the lower end of the second partition plate 6, users can freely adjust the connection position of the two partition plates according to actual packaging needs, which improves the versatility of the inner box and reduces the cost of replacing the inner box due to changes in product size.

[0033] Specifically, there are multiple sets of air columns 3, which are equidistantly arranged inside the box 1, and the gap between two sets of air columns 3 is consistent with the width of the first partition plate 4 and the second partition plate 6.

[0034] Through the above technical solution, multiple sets of inflatable columns 3 are equidistantly arranged inside the box 1, which can provide uniform and comprehensive cushioning protection for the product inside the box. When the packaging box is subjected to external impact, the equidistantly distributed inflatable columns 3 can disperse the impact force to the entire inner box space, avoiding excessive local force and damage to the product. The multiple sets of inflatable columns 3 play a certain supporting and limiting role for the first partition plate 4 and the second partition plate 6, further enhancing the stability of the entire inner box structure.

[0035] Specifically, the first lifting frame 9 is rotatably set in the first groove 8, and the second lifting frame 11 is rotatably set in the first lifting frame 9.

[0036] Through the above technical solution, the first lifting frame 9 is rotatably set in the first groove 8, so that the user can flexibly adjust the angle of the first lifting frame 9 according to the actual handling needs, and can be stored in the side of the box body 1 when not in use. The first lifting frame 9 can be rotated back into the first groove 8, and the second lifting frame 11 can also be rotated and stored in the first lifting frame 9, so that the entire lifting frame structure fits the surface of the box body, reducing the space occupied by the packaging box handle and making it convenient to use.

[0037] In use, when packaging products, the operator can quickly place the base pad 2 at the bottom of the box body 1, install the inflation column 3 on the inner wall of the box body 1, and then, according to the size and shape of the product, insert the first partition plate 4 and the second partition plate 6 into the gap between the inflation column 3 and fix them through the first slot 5 and the second slot 7. Place the product in the space separated by the first partition plate 4 and the second partition plate 6, align the cover plate 14 with the top of the box body 1, so that the second magnetic strip 16 of the cover plate 14 automatically attracts the first magnetic strip 13 of the box body 1, ensuring that the cover... The board fits tightly against the box body, and the top pad 15 inside the cover plate 14 will provide cushioning protection for the top of the product. If it needs to be moved, hold the second lifting frame 11 in the first lifting frame 9, or flip the first lifting frame 9, push out your fingers through the recess 10 and flip the second lifting frame 11, hold the second lifting frame 11, and use the anti-slip strip 12 on the second lifting frame 11 to increase the grip stability and move the packaging box smoothly. If the lifting frame is not needed, store the first lifting frame 9 into the first groove 8 on both sides of the box body 1, and rotate the second lifting frame 11 to store it in the first lifting frame 9 to reduce space occupation.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An inner box of a packaging box, comprising a box body (1), characterized in that: The bottom of the box (1) is provided with a base pad (2), and the inner wall of the box (1) is provided with multiple sets of air columns (3). A first partition plate (4) is placed between the multiple sets of air columns (3), and a first slot (5) is provided on the first partition plate (4). A second partition plate (6) is installed on one side of the first partition plate (4), and multiple sets of second slots (7) are provided on the second partition plate (6).

2. The inner box of a packaging box according to claim 1, characterized in that: The box body (1) has a first groove (8) on both sides, a first lifting frame (9) is installed in the first groove (8), a recess (10) is opened in the first lifting frame (9), and a second lifting frame (11) is installed in the first lifting frame (9), and an anti-slip strip (12) is provided on the inner wall of the second lifting frame (11).

3. The inner box of a packaging box according to claim 1, characterized in that: The upper end of the box body (1) is provided with a first magnetic strip (13), and a cover plate (14) is placed on the upper end of the first magnetic strip (13). A second magnetic strip (16) that attracts the first magnetic strip (13) is provided at the contact point between the cover plate (14) and the box body (1), and a top pad (15) is provided inside the cover plate (14).

4. The inner box of a packaging box according to claim 1, characterized in that: The bottom pad (2) matches the box body (1), and the first partition plate (4) and the second partition plate (6) are arranged crosswise.

5. The inner box of a packaging box according to claim 1, characterized in that: The first card slot (5) is in multiple sets, and the multiple sets of the first card slot (5) are opened at the upper end of the first partition plate (4). The second card slot (7) is in multiple sets, and the multiple sets of the second card slot (7) are opened at the lower end of the second partition plate (6). The first card slot (5) and the second card slot (7) are the same.

6. The inner box of a packaging box according to claim 1, characterized in that: The inflatable columns (3) are in multiple sets, and the multiple sets of inflatable columns (3) are equidistantly arranged in the box (1), and the gap between two sets of inflatable columns (3) is consistent with the width of the first partition plate (4) and the second partition plate (6).

7. The inner box of a packaging box according to claim 2, characterized in that: The first lifting frame (9) is rotatably disposed in the first groove (8), and the second lifting frame (11) is rotatably disposed in the first lifting frame (9).