Carton box

Abstract

The carton comprises a hollow paper carton body, the top of the carton body is open, the carton body is in a cuboid shape, the carton body comprises a first side plate and a second side plate which are perpendicular to each other, a first swing cover is arranged at the top end of the first side plate, a second swing cover is arranged at the top end of the second side plate, and the first side plate and the second side plate which are adjacent to each other are connected to form an inner side angle. Stand columns are arranged at at least two inner side corners of the box body respectively, the bottom ends of the stand columns abut against the inner bottom face of the box body, the top ends of the stand columns are flush with the top ends of the second side plates, the top ends of the stand columns are higher than the top ends of the first side plates, and the top ends of the stand columns are higher than the top ends of the second side plates; the first rocking cover is provided with a first notch matched with the stand column corresponding to the first rocking cover; and a second notch matched with the stand column corresponding to the second rocking cover is formed in the second rocking cover. Through the arrangement of the stand columns, the vertical bearing capacity of the carton can be improved, and the paper consumption of the carton can be reduced.

Description

Technical Field

[0001] This utility model relates to a cardboard box and belongs to the field of packaging box technology. Background Technology

[0002] Cardboard boxes are widely used packaging products. Depending on the materials used, they include corrugated cardboard boxes and single-layer cardboard boxes, and come in various specifications and models. Furthermore, cardboard boxes with specific dimensions can be designed to fit the product being packaged, typically used as wrapping materials or protective outer layers for goods. The volume of a cardboard box varies depending on the size of the goods. After unfolding the box, specific dimensions can be analyzed based on its shape, and its length, width, and height can be determined through precise measurements. When using cardboard boxes, they need to be folded into a three-dimensional shape before being used to package target items such as fruits. Because fruits and vegetables require stacking during refrigeration and transportation, the cardboard box material needs to meet moisture-proof and load-bearing requirements. To prevent the cardboard box from being damaged by pressure after getting damp, it is often necessary to add moisture-proof processes and increase the amount of paper used, increasing the thickness of the side walls to improve moisture resistance or strength, such as with top-and-bottom lid cardboard boxes. This increases the cost of cardboard boxes, wastes paper materials, and is not environmentally friendly.

[0003] Chinese utility model patent application CN212474275U discloses a cardboard box with trapezoidal reinforcing ribs, including a box body and inner and outer flaps located at both ends of the box body. Each outer flap includes a front flap and a rear flap. The inner wall of the front flap has protruding trapezoidal reinforcing ribs arranged laterally along a straight line, with both ends of the trapezoidal reinforcing ribs facing the front and rear sides of the front flap, respectively. The front edge of the rear flap has open-shaped notches arranged laterally along a straight line. Each open-shaped notch is paired with each trapezoidal reinforcing rib, and when the inner and outer flaps at each end cooperate to close the port face of each end of the box body, a mating and plugging structure is formed, avoiding the sealing surface from sinking in and avoiding defects caused by the sealing surface sinking. However, this patent mainly strengthens the port face and cannot effectively improve the overall load-bearing capacity of the cardboard box. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a cardboard box with strong overall load-bearing capacity.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A cardboard box includes a hollow paper box body with an opening at the top. The box body is cuboid in shape and includes a first side panel and a second side panel that are perpendicular to each other. The top of the first side panel is provided with a first flap, and the top of the second side panel is provided with a second flap. Adjacent first and second side panels are connected to form an inner corner. At least two inner corners of the box body are provided with uprights. The bottom of the uprights abuts against the inner bottom surface of the box body, and the top of the uprights is flush with the top of the second side panel. The top of the uprights is higher than the top of the first side panel and the top of the second side panel. The first flap has a first notch that matches the corresponding upright. When the first flap is closed toward the opening of the box body, the upright is locked in the first notch. The second flap has a second notch that matches the corresponding upright. When the second flap is closed toward the opening of the box body, the upright is locked in the second notch.

[0007] Therefore, by setting up uprights that abut against the inner bottom surface of the box and are higher than the side panels, the box's load-bearing capacity can be improved. Simultaneously, by setting notches on the flaps that match the uprights, a more regular box structure is formed when the flaps are closed. This also allows the uprights to be locked within the notches, eliminating the need for adhesives or other means to fix the uprights. This ensures that the uprights and the box remain relatively fixed during transport, preventing concerns about upright displacement affecting support. Furthermore, vertical loads can be transferred sequentially from top to bottom through the uprights and the box's bottom plate. Therefore, when stacking multiple boxes containing items, the load can be effectively transferred downwards through the uprights and the corresponding area of ​​the bottom plate, improving the box's load-bearing capacity and effectively reducing the load or weight borne by the box itself. This helps reduce the requirements for box materials and quantity, thus saving costs.

[0008] The top of the column of this utility model extends beyond the side plate, which allows the stacking load to be preferentially transmitted vertically along the direction of the column and the bottom plate of the box. The remaining smaller load is dispersed through the shear surface of the side plate, realizing the separation of the primary and secondary load-bearing paths. This can effectively reduce the possibility of stress superposition damaging the box. For example, when multiple cartons containing goods are stacked on top of each other, the cartons at the bottom are not easily crushed, which helps to improve stacking stability and increase the number of stackable layers of cartons.

[0009] Furthermore, the height difference between the top of the column and the top of the first side plate is not less than the thickness of the flap, and not greater than the sum of the thicknesses of the first and second flaps; the height difference between the top of the column and the top of the second side plate is not less than the thickness of the flap, and not greater than the sum of the thicknesses of the first and second flaps. Therefore, the column will not obstruct the flap's rotation; moreover, after the flap is closed, the surface of the column is basically flush with the top surface of the box, which ensures both the neatness and aesthetics of the packaging, and also helps improve the stability when multiple cartons are stacked on top of each other.

[0010] Furthermore, the number of uprights is 3-4 to better improve the load-bearing capacity of the carton.

[0011] Furthermore, the column is a triangular prism or a quadrangular prism, preferably a triangular prism.

[0012] Furthermore, the column is bonded to the box body.

[0013] Furthermore, the support column is made of one of the following materials: wood, bamboo, or plywood. Wood and bamboo are both upstream raw materials for paper, and their cost is generally lower than that of paper; plywood is usually formed by extruding wood chips and adhesives, and its cost is also relatively low. This helps to control the cost of cardboard boxes.

[0014] Optionally, the box body is made of corrugated paper or single-layer cardboard.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This utility model, through the setting of uprights, can increase the vertical load-bearing capacity of the carton, which helps to reduce the amount of paper used in the carton. In addition, the cooperation between the uprights and the notches on the flaps can effectively reduce the possibility of the uprights shifting during transportation, thereby greatly improving the stacking stability of the cartons containing goods, as well as their shock resistance during transportation.

[0017] 2. The cardboard box of this utility model has reduced load-bearing requirements and lower moisture-proof requirements during refrigeration, thus reducing the cost of moisture-proof treatment for the cardboard box.

[0018] 3. The flap of this utility model has a pre-reserved notch, which allows the uprights to be secured during the packing process, eliminating the need for bonding the uprights to the box. It can be used immediately after placement, making operation more convenient and improving work efficiency.

[0019] 4. This utility model can be made of materials such as wood and bamboo strips, and can be produced in areas with abundant raw materials, resulting in extremely low mass production costs. Attached Figure Description

[0020] Figure 1 This is a simplified structural diagram of the cardboard box according to Embodiment 1 of this utility model. Detailed Implementation

[0021] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0022] Example 1

[0023] See Figure 1 A cardboard box includes a hollow cardboard box body 1 with an opening at the top. The box body 1 is rectangular in shape and includes a bottom plate, two first side plates 101, and two second side plates 102. The first and second side plates are perpendicular to each other and are integrally connected. A first flap 103 is provided at the top of the first side plate 101, and a second flap 104 is provided at the top of the second side plate 102. Adjacent first side plates 101 and second side plates 102 are connected to form inner corners. A column 2 is provided at each of the four inner corners of the box body 1. The bottom end of the column 2 abuts against the inner bottom surface of the box body 1. The top of the column 2 is flush with the top of the second side plate 102. The top of the column 2 is higher than the top of the first side plate 101 and the top of the second side plate 102. The first flap 103 has a first notch 3 that matches the column 2. After the first flap 103 is closed toward the opening of the box 1, the column 2 is stuck in the first notch 3. The second flap 104 has a second notch 4 that matches the column 2. After the second flap 104 is closed toward the opening of the box 1, the column 2 is stuck in the second notch 4. The height difference between the top of the column 2 and the top of the first side plate 101 is not less than the thickness of the first flap, and not greater than the sum of the thicknesses of the first flap 103 and the second flap 104; the height difference between the top of the column 2 and the top of the second side plate 102 is not less than the thickness of the second flap, and not greater than the sum of the thicknesses of the first flap 103 and the second flap 104. The column 2 is a triangular prism. The column 2 is made of wood. A through hole 5 is provided on the second side plate for easy handling.

[0024] When the aforementioned cardboard boxes are used for fruit packing and transportation, the uprights and corresponding base plates inside the upper and lower layers of boxes can form a continuous vertical force transmission after the boxes are stacked with fruit loaded. This effectively reduces the vertical load that the boxes themselves need to bear, and helps to ensure that the boxes do not collapse or break during stacking and transportation.

[0025] The above embodiments should be understood as being used only to illustrate the present invention more clearly, and not to limit the scope of the present invention. After reading the present invention, any modifications of the present invention by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.

Claims

1. A cardboard box, comprising a hollow cardboard box body (1), with an opening at the top of the box body (1), the box body (1) being rectangular in shape, the box body (1) comprising a first side panel (101) and a second side panel (102) perpendicular to each other, the top of the first side panel (101) being provided with a first flap (103), the top of the second side panel (102) being provided with a second flap (104), and adjacent first side panels (101) and second side panels (102) being connected to form an inner corner; characterized in that, At least two inner corners of the housing (1) are provided with columns (2), the bottom end of the columns (2) abuts against the inner bottom surface of the housing (1), the top end of the columns (2) is flush with the top end of the second side plate (102), the top end of the columns (2) is higher than the top end of the first side plate (101), and the top end of the columns (2) is higher than the top end of the second side plate (102); the first hinged cover (103) is provided with... The first notch (3) matches the first swivel cover (103) and the corresponding column (2). After the opening of the first swivel cover (103) facing the box (1) is closed, the column (2) is stuck in the first notch (3). The second swivel cover (104) is provided with a second notch (4) that matches the corresponding column (2). After the opening of the second swivel cover (104) facing the box (1) is closed, the column (2) is stuck in the second notch (4).

2. The cardboard box according to claim 1, characterized in that, The height difference between the top of the column (2) and the top of the first side plate (101) is not less than the thickness of the flap, and not greater than the sum of the thicknesses of the first flap (103) and the second flap (104); the height difference between the top of the column (2) and the top of the second side plate (102) is not less than the thickness of the flap, and not greater than the sum of the thicknesses of the first flap (103) and the second flap (104).

3. The cardboard box according to claim 1, characterized in that, The number of columns (2) is 3-4.

4. The cardboard box according to any one of claims 1-3, characterized in that, The column (2) is a triangular prism or a quadrangular prism.

5. The cardboard box according to any one of claims 1-3, characterized in that, The column (2) is bonded to the box (1).

6. The cardboard box according to any one of claims 1-3, characterized in that, The material of the column (2) is one of wood, bamboo or plywood.

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