A paperboard carton

Abstract

The utility model discloses a kind of anti-deformation cartons, including bottom plate, side plate and cover plate, side plate is composed of two layers of corrugated board, multiple vertically supporting columns of interval arrangement are connected between two layers of corrugated board, still be additionally provided with several horizontal reinforcing ribs between two layers of corrugated board, horizontal reinforcing rib and vertically supporting column cross formation grid structure, the topmost horizontal reinforcing rib is at a distance apart from the top edge of corrugated board, and with adjacent two vertically supporting columns enclose plugboard cavity with opening upwards;Cover plate is divided into two groups, and each group of cover plate includes two pieces of folding plate symmetrically connected and arranged at the top of side plate, and the two symmetrical side of the inner side of at least one group of cover plate is provided with insert piece that can be inserted in plugboard cavity;The cooperation design of insert piece and plugboard cavity in the utility model makes cover plate embed side plate cavity by insert piece after closing, prevent cover plate collapse;Vertically supporting column and horizontal reinforcing rib cross formation grid structure arranged in double-layer corrugated board, disperses external pressure.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box technology, specifically to a deformation-resistant cardboard box. Background Technology

[0002] In the logistics and warehousing sectors, cardboard boxes are widely used due to their lightweight and low cost. However, traditional cardboard boxes are prone to deformation under load, stacking, or pressure, especially at the connection between the side panels and the lid, where insufficient structural strength leads to structural instability. Current technologies sometimes increase the strength of cardboard boxes by adding more layers or simple supports, but these designs often result in increased weight and cost, and fail to effectively address localized stress concentration. For example, the side panels of ordinary corrugated cardboard boxes are often single-layered or simply double-layered, lacking targeted compression support designs; the connection between the lid and side panels usually relies on tape or clips, which are prone to loosening or collapse under external forces after closure. Therefore, there is an urgent need for a cardboard box structure that can maintain lightweight and low cost while significantly enhancing its resistance to deformation. Utility Model Content

[0003] The purpose of this utility model is to solve the problems existing in the above-mentioned background technology and provide a deformation-resistant cardboard box.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: a deformation-resistant cardboard box, comprising a bottom plate, side plates, and a cover plate, wherein the cover plate is foldably connected to the top of the side plate, the side plate is composed of two layers of corrugated cardboard, and multiple spaced vertical support columns are connected between the two layers of corrugated cardboard, and several transverse reinforcing ribs are also added between the two layers of corrugated cardboard, the transverse reinforcing ribs intersecting with the vertical support columns to form a grid structure, the uppermost transverse reinforcing rib being spaced a certain distance from the top edge of the corrugated cardboard, and forming an upward-opening insert cavity with two adjacent vertical support columns; the cover plate is divided into two groups, each group of the cover plate including two folding plates symmetrically connected to the top of the side plate, and insert pieces that can be inserted into the insert cavity are provided on two symmetrical sides of the inner side of at least one group of the cover plate, and at least two insert pieces are provided.

[0005] Furthermore, L-shaped reinforcing strips are vertically installed at the four inner corners of the side plate, and the reinforcing strips are connected to the side plate.

[0006] Furthermore, the insert is trapezoidal, and the depth of the insert cavity is the same as the height of the insert.

[0007] Furthermore, the insert is provided on two symmetrical sides of the inner surface of only one set of the cover plate.

[0008] Furthermore, the insert is provided on both symmetrical sides of the inner side of the two sets of cover plates.

[0009] Furthermore, three insert pieces are respectively provided on the two symmetrical sides of the inner side of the cover plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. The grid structure formed by the intersection of vertical support columns and horizontal reinforcing ribs inside the double-layer corrugated cardboard on the side panels disperses external pressure, avoids local stress concentration, and effectively enhances overall rigidity.

[0011] 2. The design of the insert and the insert plate cavity allows the cover plate to be embedded into the side plate cavity through the insert after closing, preventing the cover plate from collapsing; the L-shaped reinforcing strips at the four corners of the inner side plate further enhance the compression resistance of the four corners of the carton and reduce the risk of deformation when stacked.

[0012] 3. By adjusting the number of inserts (such as inserts in a single or double set of cover plates) and their shape (trapezoidal inserts matching the cavity depth), different load-bearing scenarios can be adapted, taking into account both versatility and customization needs. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of a set of cover plates with inserts in this utility model. Figure 3 This is a schematic diagram showing the insert plate on the cover plate being inserted into the insert plate cavity of the side plate in this utility model; Figure 4 This is a schematic diagram showing that both sets of cover plates are equipped with inserts.

[0014] In the diagram: 1-base plate, 2-side plate, 3-cover plate, 4-vertical support column, 5-transverse reinforcing rib, 6-insertion plate cavity, 7-insertion plate, 8-reinforcing strip. Detailed Implementation

[0015] 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.

[0016] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0017] Example 1 Combination Figures 1 to 4 The diagram shows an anti-deformation cardboard box, including a bottom plate 1, side plates 2, and a cover plate 3. The cover plate 3 is foldable and connected to the top of the side plate 2. The side plate 2 is composed of two layers of corrugated cardboard, and multiple vertical support columns 4 are connected between the two layers of corrugated cardboard. Several horizontal reinforcing ribs 5 are also added between the two layers of corrugated cardboard. The horizontal reinforcing ribs 5 and the vertical support columns 4 intersect to form a grid structure. The uppermost horizontal reinforcing rib 5 is spaced a certain distance from the top edge of the corrugated cardboard and forms an upward-opening insert cavity 6 with the two adjacent vertical support columns 4. The cover plate 3 is divided into two groups. Each group of cover plates 3 includes two folding plates symmetrically connected and arranged on the top of the side plate 2. Insert pieces 7 that can be inserted into the insert cavity 6 are provided on two symmetrical sides of the inner side of at least one group of cover plates 3. At least two insert pieces 7 are provided. like Figure 1 As shown, L-shaped reinforcing strips 8 are vertically installed at the four inner corners of the side panel 2, and the reinforcing strips 8 are connected to the side panel 2. The four reinforcing strips 8 can be glued to the corrugated cardboard of the side panel 2. The reinforcing strips 8 reinforce the four corners of the carton and enhance the four corners' resistance to pressure and deformation.

[0018] like Figure 3 As shown, three inserts 7 are respectively provided on the two symmetrical sides of the inner side of the cover plate 3. The inserts 7 are trapezoidal, and the depth of the insert cavity 6 is the same as the height of the inserts 7. When a set of cover plates 3 with inserts 7 is folded over, it will cover the opening of the carton. At this time, the inserts 7 will be inserted into the insert cavity 6, and the inner bottom surface of the insert cavity 6 will support the inserts 7, thereby supporting the cover plate 3. When objects are stacked on top of the carton, the cooperation between the inserts 7 and the insert cavity 6 can enhance the carton's resistance to pressure and deformation.

[0019] like Figure 1 As shown, only one set of cover plates 3 has two symmetrical sides on its inner side with inserts 7. When the carton is closed, this set of cover plates 3 is folded first and the inserts 7 on it are inserted into the insert cavity 6. Then the other set of cover plates 3 is folded. After both sets of cover plates 3 are closed, the carton can be sealed with tape.

[0020] Example 2 like Figure 4 As shown, compared to Embodiment 1, in this embodiment, both symmetrical sides of the inner surfaces of the two sets of cover plates 3 are provided with inserts 7. When it is necessary to close the cover, one set of cover plates 3 can be folded first, and the inserts 7 on it can be inserted into the insert cavity 6. Then, the other set of cover plates 3 can be folded. At this time, although the set of cover plates 3 that is folded later has inserts 7, the inserts 7 on it cannot be inserted into the insert cavity 6 due to the obstruction of the first set of cover plates 3. Therefore, when folding the second set of cover plates 3, all the inserts 7 on it can be folded inward by hand. Then, the second set of cover plates 3 can be folded and closed. Finally, the carton is sealed with tape.

[0021] The working principle of this utility model is as follows: The side plate 2 is made of double-layer corrugated cardboard, with vertical support columns 4 and horizontal reinforcing ribs 5 evenly distributed between the two layers to form a grid-like support frame. This structure evenly distributes external pressure to the entire side plate 2, avoiding deformation caused by single-point stress. The uppermost horizontal reinforcing rib 5 is spaced from the top edge of the side plate 2, and together with the adjacent vertical support columns, forms an upward-opening insert cavity 6, providing space for the insert 7 to be embedded. The cover plate 3 is divided into two groups, each group containing symmetrical folding plates, with at least one group of cover plates 2. Trapezoidal inserts 7 are provided on the inner side. When closed, inserts 7 are inserted into the insert cavity 6 of the side panel. The height of inserts 7 is consistent with the depth of the cavity, ensuring close contact with the bottom surface of the cavity after embedding, forming vertical support. When the cover 2 is compressed, inserts 7 transfer the pressure to the grid support structure of the side panel 2, preventing the cover 2 from sinking directly. The L-shaped reinforcing strips 8 at the four corners of the inner side of the side panel 2 are fixed by adhesive, strengthening the torsional resistance of the four corners of the carton. Especially in stacking scenarios, the load-bearing capacity of the four corners is significantly improved, reducing the risk of the carton tilting or collapsing. The number and position of inserts 7 can be adjusted according to needs (such as three inserts on one side) to adapt to cartons of different sizes or load-bearing requirements. The trapezoidal insert design of 7 facilitates insertion into the cavity and prevents slippage, ensuring closing stability.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A deformation-resistant cardboard box, comprising a bottom plate (1), side plates (2), and a cover plate (3), wherein the cover plate (3) is foldably connected to the top of the side plates (2), characterized in that: The side panel (2) is composed of two layers of corrugated cardboard, and multiple vertical support columns (4) are connected between the two layers of corrugated cardboard. Several horizontal reinforcing ribs (5) are also added between the two layers of corrugated cardboard. The horizontal reinforcing ribs (5) intersect with the vertical support columns (4) to form a grid structure. The uppermost horizontal reinforcing rib (5) is spaced a certain distance from the top edge of the corrugated cardboard and forms an upward-opening insert cavity (6) with the two adjacent vertical support columns (4). The cover plate (3) is divided into two groups. Each group of cover plates (3) includes two folding plates symmetrically connected on the top of the side panel (2). Insert pieces (7) that can be inserted into the insert cavity (6) are provided on two symmetrical sides of the inner side of at least one group of cover plates (3). At least two insert pieces (7) are provided.

2. The anti-deformation cardboard box according to claim 1, characterized in that: The four inner corners of the side plate (2) are each provided with an L-shaped reinforcing strip (8), which is connected to the side plate (2).

3. The anti-deformation cardboard box according to claim 2, characterized in that: The insert (7) is trapezoidal, and the depth of the insert cavity (6) is the same as the height of the insert (7).

4. The anti-deformation cardboard box according to claim 1, characterized in that: Only one set of the inner side of the cover plate (3) has the insert (7) provided on the two symmetrical sides.

5. The anti-deformation cardboard box according to claim 1, characterized in that: The insert (7) is provided on both symmetrical sides of the inner side of the two sets of cover plates (3).

6. The anti-deformation cardboard box according to claim 1, characterized in that: Three inserts (7) are respectively provided on the two symmetrical sides of the inner side of the cover plate (3).

Images