Expandable packaging box
By designing an expandable packaging box, the folding structure saves space when not in use and provides stable support when in use, solving the problems of easy breakage and space occupation of large-capacity packaging boxes, and achieving the effects of saving materials and improving durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-04-07
AI Technical Summary
Large-capacity packaging boxes are easily damaged by impacts during transportation and occupy a large storage space, leading to increased material usage and higher costs.
Design an expandable packaging box, comprising a box body and a lid. The box body has a padding and a foldable bottom sheet inside. The crease line design allows the packaging box to be stored tightly when not in use and to be unfolded to provide stable support when needed.
When not in use, it saves storage space, is compact, and easy to carry; when in use, it provides stable support, prevents tearing, and saves material costs.
Smart Images
Figure CN224090681U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of packing, more particularly to a expandable packing box. BACKGROUND
[0002] The commodity packing box refers to the container or structure for packing commodities, protecting commodities from damage in the process of transportation and storage, and displaying commodity information, enhancing commodity added value and attracting consumers. It is usually made of paper, plastic, metal, wood and other materials, and is customized and designed according to the characteristics, shape, size and brand positioning of the commodity. It needs to meet the practicality requirements such as shockproof, moistureproof and pressureproof, and also needs to enhance the visual attraction of the commodity through exquisite printing, unique modeling or creative structure, so as to promote sales.
[0003] In the total cost of commodities, the cost of packaging materials usually accounts for a certain proportion. In order to control the cost, the merchants often hope to reduce the material consumption. In order to accommodate more commodities or provide more protection space, the size of the packing box needs to be increased accordingly, which inevitably leads to the increase of the required material consumption. With the increase of the capacity, the large-capacity packing box is more likely to be damaged due to impact. The packing box needs more complex structure to provide sufficient support and protection, such as reinforced corners, additional layers, etc., which will further increase the material consumption. In addition, the large-capacity packing box needs more storage space. SUMMARY
[0004] The utility model aims at providing an expandable packing box to solve the problem that the large-capacity packing box is more likely to be damaged due to impact.
[0005] To achieve the above-mentioned purpose, the utility model provides the technical scheme:
[0006] The utility model relates to an expandable packing box, which comprises a box body and a box cover. The inner size of the box cover matches the outer size of the box body. The inside of the box body is provided with a gasket. The contour size of the gasket matches the inner size of the box body. The bottom end face of the box body is provided with two bottom sheets. The combined size of the two bottom sheets is smaller than the unfolded width of the box body, and a gap is arranged between the two bottom sheets.
[0007] Preferably, a folding line is arranged at the middle section line position of the box body, and the box body is symmetrical to the folding line.
[0008] Preferably, the bottom sheet and the edge end of the box body are provided with a crease line one and a crease line two. The crease line one and the crease line two of the flat bottom sheet are vertically distributed.
[0009] Preferably, two crease line ones and one crease line two are arranged at the three edge ends of one bottom sheet, and the other edge end is connected to the other bottom sheet.
[0010] Preferably, the surface of the bottom sheet is provided with a crease line three, which is in a V-shaped structure.
[0011] Preferably, the bottom sheet is folded inwardly in contact with the box body through the crease line one and the crease line two, and is folded in butt joint through the crease line three.
[0012] Preferably, two corners of the bottom sheet are provided with notches, and the corresponding notch positions are opposite.
[0013] Preferably, the length and width dimensions of the side vertical surface of the box body are matched with the inner dimensions of the box cover.
[0014] Compared with the prior art, the technical scheme has the following beneficial effects:
[0015] 1. The expandable packaging box can be stored as a paperboard with a certain thickness as a whole through the ingenious design of the crease line one, the crease line two and the crease line three, and is placed together with the cushion on the inner side of the box cover when the packaging box is in an idle state. This design significantly minimizes the storage space of the packaging box, so that the packaging box is more space-saving when not in use, and is convenient to store and carry. The packaging box in the storage state is in a compact state, has a certain impact resistance, is conducive to stacking of multiple packaging boxes, and further improves the space utilization.
[0016] 2. When the packaging box needs to place goods, the box body and the cushion are taken out, the box body is unfolded, and the cushion is placed in the bottom of the box body and is attached to the bottom sheet. This design increases the supporting force of the bottom of the box body, so that the packaging box is more stable when carrying goods. The overall packaging box does not need to additionally add reinforced corners or layers, and can provide sufficient packaging force, thereby saving material cost. At the same time, since the bottom sheet is folded in butt joint through the crease line three, and the two corners are provided with notches, the corners have a certain movement space when the box body and the bottom sheet are folded, so that tearing is avoided, and the durability and practicality of the packaging box are further improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a split structure schematic view of the utility model;
[0018] Figure 2 is a structure schematic view of the packaging box form of the utility model;
[0019] Figure 3 is a box body unfolding structure schematic view of the utility model;
[0020] Figure 4 is a box body contraction structure schematic view of the utility model;
[0021] Figure 5 This is a schematic diagram of the storage and display structure of this utility model.
[0022] In the picture: 1. Box body; 11. Fold line; 2. Padding; 3. Box lid; 4. Backing; 41. Fold line one; 42. Fold line two; 43. Fold line three; 44. Notch. Detailed Implementation
[0023] 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.
[0024] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.
[0025] Combination Figure 1 This utility model discloses an expandable packaging box, including a box body 1 and a box lid 3. The inner dimensions of the box lid 3 match the outer dimensions of the box body 1. A padding 2 is provided inside the box body 1, and the outline dimensions of the padding 2 match the inner dimensions of the box body 1. A bottom sheet 4 is provided on the bottom surface of the box body 1. There are two bottom sheets 4, and the combined dimensions of the two bottom sheets 4 are smaller than the unfolded width of the box body 1. A gap is provided between the two bottom sheets 4. A fold line 11 is provided at the middle cut-off position of the box body 1. The box body 1 is symmetrical about the fold line 11. A fold line 41 and a fold line 42 are provided at the edge of the bottom sheet 4 and the edge of the box body 1. The fold lines 41 and 42 of the flat bottom sheet 4 are vertically distributed. Two fold lines 41 and one fold line 42 are provided at the three edge ends of one bottom sheet 4, and the other edge end is connected to another bottom sheet 4.
[0026] The present invention will be further described below with reference to the embodiments.
[0027] Combination Figures 2-5 The surface of the bottom sheet 4 is provided with crease line 3 43, which has a V-shaped structure. The bottom sheet 4 is folded inward and contacts the box body 1 through crease line 1 41 and crease line 2 42. The bottom sheet 4 is folded and joined together through crease line 3 43. There are notches 44 at the two corners of the bottom sheet 4. The positions of the notches 44 are opposite. The length and width of the side facade of the box body 1 match the inner dimensions of the box lid 3.
[0028] In this embodiment, when the packaging box is idle, the box body 1 is folded into a cardboard shape of a certain thickness using the fold lines of fold line 1 41, fold line 2 42 and fold line 3 43. It is placed inside the box lid 3 together with the padding 2 to minimize the storage space of the packaging box. The notch 44 allows the corners of the box body 1 and the bottom sheet 4 to have a certain amount of room to move when folded, avoiding tearing. In addition, after the box body 1 and the padding 2 are placed inside the box lid 3, the packaged box in the folded state is in a tight state, has a certain impact resistance, and is conducive to stacking multiple packaging boxes.
[0029] When the packaging box needs to hold the product, take out the box body 1 and the pad 2, unfold the box body 1, and place the pad 2 into the bottom of the box body 1 to fit against the bottom sheet 4, increasing the support of the bottom of the box body 1. After placing the product, close the box lid 3 to seal it. The whole box does not need to be reinforced with additional corners or partitions, saving materials and providing sufficient packaging strength.
[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0031] 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 can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An expandable packaging box, comprising a box body (1) and a box lid (3), wherein the inner dimensions of the box lid (3) match the outer dimensions of the box body (1), characterized in that: The box body (1) is provided with a pad (2) inside. The outline size of the pad (2) matches the inner size of the box body (1). The bottom end face of the box body (1) is provided with a bottom piece (4). There are two bottom pieces (4). The combined size of the two bottom pieces (4) is smaller than the unfolded width of the box body (1), and there is a gap between the two bottom pieces (4).
2. The expandable packaging box according to claim 1, characterized in that: A fold line (11) is provided at the middle section of the box body (1), and the box body (1) is symmetrical about the fold line (11).
3. The expandable packaging box according to claim 2, characterized in that: The bottom sheet (4) and the edge of the box body (1) are provided with crease line one (41) and crease line two (42), and the crease line one (41) and crease line two (42) of the flat bottom sheet (4) are vertically distributed.
4. The expandable packaging box according to claim 3, characterized in that: Two crease lines (41) and one crease line (42) are provided on the three edges of the film (4), and the other edge is connected to the other film (4).
5. An expandable packaging box according to claim 1, characterized in that: The surface of the film (4) is provided with crease line three (43), which has a V-shaped structure.
6. The expandable packaging box according to claim 2, characterized in that: The bottom sheet (4) is folded inward and contacts the box body (1) through crease line one (41) and crease line two (42), and the bottom sheet (4) is folded and joined together through crease line three (43).
7. An expandable packaging box according to claim 1, characterized in that: The film (4) has notches (44) at its two corners, and the positions of the notches (44) are opposite to each other.
8. The expandable packaging box according to claim 1, characterized in that: The length and width dimensions of the side facade of the box body (1) match the inner dimensions of the box lid (3).