A folding and unfolding type packaging box

Abstract

The application relates to the field of packaging boxes, in particular to a folding and unfolding type packaging box. The packaging box comprises a bottom plate and a surrounding plate assembly; the bottom plate is a square flat plate structure; the surrounding plate assembly is uniformly distributed in four groups around the bottom plate, and the four groups of surrounding plate assemblies are respectively connected to four edges of the bottom plate; the surrounding plate assembly comprises an outer side plate, a reinforcing plate assembly which is folded and abuts on the outer side plate, and a cover assembly which is folded, inserted and abuts on the top of the outer side plate and the reinforcing plate assembly; the outer side plate is connected to the edge of the bottom plate and is folded to be perpendicular to the bottom plate; the reinforcing plate assembly in the adjacent surrounding plate assembly is detachably connected; the cover assembly in the adjacent surrounding plate assembly is detachably connected; in the completely unfolded state of the surrounding plate assembly, the reinforcing plate assembly, the outer side plate and the cover assembly are distributed in an L shape. The application improves the structural strength, the compression resistance and the impact resistance to ensure the protection performance of the inner side articles.

Description

Technical Field

[0001] This invention relates to the field of packaging boxes, and in particular to a folding and unfolding packaging box. Background Technology

[0002] Packaging boxes are an important component of products. Nowadays, on the dazzling array of goods on store shelves, the first thing that catches people's eye is often the product's packaging box. Packaging boxes play a very important role in product sales, especially in attracting consumers, increasing product added value, and satisfying consumers' emotional needs.

[0003] Chinese Patent Publication No. CN213566953U discloses a folding and unfolding packaging box including a carrier plate, a bottom plate, and a front plate, a rear plate, a left side plate, and a right side plate, all foldably connected to the bottom plate. The front plate, rear plate, left side plate, and right side plate can be folded to enclose the bottom plate, forming a box body. The carrier plate is disposed inside the box body, with one end fixed to the side of the front plate near the bottom plate, and the other end provided with a foldable support member. The end of the support member away from the carrier plate is fixedly connected to the bottom plate. When the front plate is folded towards the bottom plate, the carrier plate is lifted by the front plate and the support member and placed above the bottom plate. When the front plate unfolds away from the bottom plate, the carrier plate moves downward in the direction the front plate unfolds and adheres to the bottom plate. In summary, this folding and unfolding packaging box allows the goods placed inside the packaging box to move out of the packaging box simultaneously with opening the box.

[0004] However, the above technical solution has the following shortcomings:

[0005] The packaging box is surrounded by a single plate structure, which has poor overall pressure resistance and impact resistance. It is prone to large deformation under pressure, and may even tear, causing the packaging box to lose its protective effect on the items inside. Summary of the Invention

[0006] The purpose of this invention is to address the problems existing in the background art by proposing a foldable and unfoldable packaging box that improves structural strength, pressure resistance, and impact resistance to ensure the protection of inner items.

[0007] The technical solution of the present invention is a foldable and unfoldable packaging box, including a base plate and a side panel assembly; the base plate is a square flat plate structure; four groups of side panel assemblies are evenly distributed around the base plate, and the four groups of side panel assemblies are respectively connected to the four sides of the base plate. The side panel assembly includes an outer side plate, a reinforcing plate assembly folded and abutting against the outer side plate, and a cover assembly folded, inserted and abutting against the top of the outer side plate and the reinforcing plate assembly. The outer side plate is connected to the edge of the base plate and folded to a state perpendicular to the base plate. The reinforcing plate assemblies in adjacent side panel assemblies are detachably connected, and the cover assemblies in adjacent side panel assemblies are detachably connected. In the fully unfolded state of the side panel assembly, the reinforcing plate assembly, the outer side plate and the cover assembly are arranged in an L-shape.

[0008] Preferably, the reinforcing plate assembly includes a folded plate a, an inner side plate, a folded plate b, and an inner abutment plate. The outer side plate, folded plate a, inner side plate, folded plate b, and inner abutment plate are connected in sequence. After the reinforcing plate assembly is folded, folded plate a and folded plate b are parallel, and the outer side plate, inner abutment plate, and inner side plate are distributed in sequence and parallel. The inner abutment plate abuts against the outer side plate.

[0009] Preferably, after the outer side plate and the folded reinforcing plate assembly are folded towards the bottom plate, a reserved space is formed between the bottom plate, the outer side plate and the folding plate b for adjacent reinforcing plate assemblies to be inserted.

[0010] Preferably, the inner side plate is provided with a hollow channel to form a folding insert plate; the folding insert plate includes a folding plate part, an insert plate part and a stop bar part connected in sequence, with one stop bar part connected to each end of the insert plate part. The folding insert plate has a T-shaped plate structure in the flat state, and the folding plate part and the insert plate part are arranged in an L-shape in the folded state. The inner side plate of the reinforcing plate assembly is provided with a hole for the insert plate part and the folded stop bar part in the inner side plate of the adjacent reinforcing plate assembly to pass through and to prevent the stop bar part from popping out in the opposite direction.

[0011] Preferably, channel a is provided on the outer side plate, channel b is provided on the inner side plate, and channel c is provided on the inner abutment plate, with channels a, c, and b arranged in a symmetrical arrangement.

[0012] The cover assembly includes a top folding plate, folding plate c, an insert plate, folding plate d, a flat pressure plate, and a connecting assembly. The outer side plate, top folding plate, folding plate c, insert plate, folding plate d, flat pressure plate, and connecting assembly are connected in sequence. The connecting assembly, flat pressure plate, folding plate d, and insert plate pass through channels b, c, and a in sequence. After the cover assembly is folded, the flat pressure plate, top folding plate, and insert plate are distributed in parallel from top to bottom, with the flat pressure plate pressing on the top folding plate. Folding plate c, reinforcing plate assembly, outer side plate, and folding plate d are distributed in parallel in sequence, with folding plate d pressing on the outer surface of the outer side plate.

[0013] Preferably, the top folding plate has a trapezoidal plate structure, and the flat pressure plate includes an integrally connected rectangular plate part and a triangular plate part. The rectangular plate part presses on the top of the top folding plate, and the outer edge of the triangular plate part runs in the same direction as the waist of the trapezoidal top folding plate.

[0014] Preferably, the connecting assembly includes a connecting plate a and a connecting plate b, which are respectively connected to the flat plate. When the connecting assembly is folded, the connecting plate a, the connecting plate b, and the flat plate are perpendicular to each other. The connecting plate a has an insert, which includes an integrally connected arc-shaped strip a and an arc-shaped strip b. Both the arc-shaped strip a and the arc-shaped strip b are arc-shaped plate structures. The central axis of the arc-shaped strip a is parallel to the central axis of the arc-shaped strip b. The arc-shaped strip b is a movable end. The connecting plate b in the capping assembly is provided with a limiting hole for the arc-shaped strip a in the adjacent capping assembly and the arc-shaped strip b folded and fitted onto the arc-shaped strip a to pass through and prevent the arc-shaped strip a from detaching if it springs back. The limiting hole is an arc-shaped hole.

[0015] Preferably, the connecting plate a is provided with a through hole a, the connecting plate b is provided with a through hole b, and the through hole a in the connecting assembly is coaxial with the through hole b in the adjacent connecting assembly.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] This invention improves the structural strength, pressure resistance, and impact resistance of the packaging box to ensure protection for the items inside. Reinforcing components strengthen the inner side of the outer panel, and adjacent reinforcing components are joined together in the reserved space. This allows the four sets of reinforcing components on the entire inner side of the packaging box to work synergistically to counteract impacts in the vertical and circumferential directions, making the packaging box less prone to deformation and effectively protecting the items inside. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the folded finished product structure according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the fully unfolded structure of an embodiment of the present invention;

[0020] Figures 3-12 These are schematic diagrams illustrating the steps of folding a partial structure from its fully unfolded state to its final state according to an embodiment of the present invention.

[0021] Reference numerals: 1. Base plate; 2. Outer plate; 201. Channel a; 3. Folding plate a; 4. Inner plate; 401. Channel b; 402. Hollowed-out channel; 403. Insertion hole; 41. Folding insert plate; 411. Folding plate part; 412. Insert plate part; 413. Stop bar part; 5. Folding plate b; 6. Inner abutment plate; 601. Channel c; 7. Top folding plate; 8. Folding plate c; 9. Through plate; 10. Folding plate d; 11. Flat pressure plate; 12. Connecting plate a; 121. Insert bar; 1211. Arc-shaped bar part a; 1212. Arc-shaped bar part b; 122. Through hole a; 13. Connecting plate b; 131. Limiting hole; 132. Through hole b. Detailed Implementation

[0022] Example 1

[0023] like Figures 1-12 As shown, the foldable and unfoldable packaging box proposed in this embodiment includes a base plate 1 and a surrounding panel assembly; the base plate 1 is a square flat plate structure.

[0024] Four sets of enclosure panel assemblies are evenly distributed around the base plate 1. The four sets of enclosure panel assemblies are respectively connected to the four sides of the base plate 1. The enclosure panel assembly includes an outer panel 2, a reinforcing plate assembly that is folded and abutted against the outer panel 2, and a cover assembly that is folded, inserted and abutted against the top of the outer panel 2 and the reinforcing plate assembly. The outer panel 2 is connected to the edge of the base plate 1 and folded to be perpendicular to the base plate 1. The reinforcing plate assemblies in adjacent enclosure panel assemblies are detachably connected, and the cover assemblies in adjacent enclosure panel assemblies are detachably connected. In the fully unfolded state of the enclosure panel assembly, the reinforcing plate assembly, the outer panel 2 and the cover assembly are arranged in an L-shape.

[0025] For a fully unfolded packaging box, which is a complete, integrated plate-like structure, it can be made from cardboard or plastic sheets. The complete, integrated plate-like structure can be produced by a single stamping process using a stamping machine. The manufacturing process is simple, convenient, and efficient. Four sets of side panel components are distributed around the base plate 1, and the entire plate-like structure is nearly square. This results in less waste from stamping and improves the utilization rate of the plate-like material.

[0026] The reinforcing plate assembly includes a folded plate a3, an inner side plate 4, a folded plate b5, and an inner abutment plate 6. The outer side plate 2, folded plate a3, inner side plate 4, folded plate b5, and inner abutment plate 6 are connected sequentially. After the reinforcing plate assembly is folded, folded plate a3 and folded plate b5 are parallel, and the outer side plate 2, inner abutment plate 6, and inner side plate 4 are sequentially distributed and parallel, with the inner abutment plate 6 abutting against the outer side plate 2. When folding the reinforcing plate assembly, first fold along both edges of folded plate b5, then fold along the edges of folded plate a3 and inner side plate 4, and finally fold along the edges of folded plate a3 and outer side plate 2, pressing the inner abutment plate 6 onto the outer side plate 2.

[0027] After the outer side plate 2 and the folded reinforcing plate assembly are folded towards the bottom plate 1, a reserved space is formed between the bottom plate 1, the outer side plate 2 and the folding plate b5 for the adjacent reinforcing plate assemblies to be inserted, so that the four sets of reinforcing plate assemblies can work together to ensure the packaging box's circumferential compression and impact resistance.

[0028] like Figure 6As shown, the inner side plate 4 is provided with a hollow channel 402 to form a folding insert plate 41. The folding insert plate 41 includes a folding plate part 411, an insert plate part 412 and a baffle part 413 connected in sequence. One baffle part 413 is connected to each end of the insert plate part 412. The folding insert plate 41 has a T-shaped plate structure in the flat state. In the folded state, the folding plate part 411 and the insert plate part 412 are arranged in an L-shape. The inner side plate 4 in the reinforcing plate assembly is provided with an insertion hole 403 for the insert plate part 412 and the folded baffle part 413 on the inner side plate 4 of the adjacent reinforcing plate assembly to pass through and to prevent the baffle part 413 from being dislodged when it springs back. After the reinforcing plate assembly is folded at a 90° angle towards the base plate 1 along with the outer plate 2, the folding plate part 411 and the insert plate part 412 are folded into an L-shape. The baffle part 413 is folded towards the surface of the insert plate part 412. Then, the baffle part 413 and the insert plate part 412 are passed together through the insertion hole 403 on the inner plate 4 of the adjacent reinforcing plate assembly. At this time, the baffle part 413 will rebound and detach from the surface of the insert plate part 412. The total length of the insert plate part 412 and the baffle part 413 is greater than the length of the insertion hole 403. The baffle part 413 can be locked onto the adjacent inner plate 4, thereby realizing the connection between the two adjacent sets of reinforcing plate assemblies. To make the connection more reliable, the width of the baffle part 413 can be designed so that the two end faces can respectively abut against the inner surface of the inner plate 4 and the inner abutment plate 6. Then the baffle part 413 is less likely to shake and can more stably play a limiting and anti-detachment role.

[0029] This embodiment improves the structural strength, pressure resistance, and impact resistance of the packaging box to ensure the protection of the items inside. The reinforcing components reinforce the inner side of the outer panel 2. Adjacent reinforcing components are connected via folding plates 41 and insertion holes 403, ensuring a secure connection. The retaining strip 413 effectively prevents detachment. Simultaneously, adjacent reinforcing components assemble at the reserved space, allowing the four sets of reinforcing components inside the packaging box to work synergistically to counteract vertical and circumferential impacts, making the packaging box less prone to deformation and effectively protecting the items inside.

[0030] After the packaging box is used up, it can be unfolded and stored away for reuse. It contains a complete flat panel, takes up little space, and is easy to store.

[0031] Example 2

[0032] like Figures 1-12 As shown, in this embodiment, a foldable and unfoldable packaging box is provided. Compared with the first embodiment, in this embodiment, the outer side plate 2 is provided with a channel a201, the inner side plate 4 is provided with a channel b401, and the inner back plate 6 is provided with a channel c601. The channels a201, c601 and b401 are arranged in a straight line.

[0033] The sealing assembly includes a top folding plate 7, a folding plate c8, an inserting plate 9, a folding plate d10, a flat pressure plate 11, and a connecting assembly. The outer side plate 2, the top folding plate 7, the folding plate c8, the inserting plate 9, the folding plate d10, the flat pressure plate 11, and the connecting assembly are connected sequentially. The connecting assembly, the flat pressure plate 11, the folding plate d10, and the inserting plate 9 pass through channels b401, c601, and a201 in sequence. The inserting plate 9 will eventually be located at channels a201, c601, and b401. It can further improve the positional stability of the reinforcing plate assembly and the outer plate 2, and improve the connection between the cover assembly and the outer plate 2 and the reinforcing plate assembly, thereby improving the overall packaging box's resistance to deformation; after the cover assembly is folded, the flat pressure plate 11, the top folding plate 7 and the through plate 9 are distributed in parallel from top to bottom, and the flat pressure plate 11 presses on the top folding plate 7. The folding plate c8, the reinforcing plate assembly, the outer plate 2 and the folding plate d10 are distributed in parallel in sequence, and the folding plate d10 presses on the outer surface of the outer plate 2.

[0034] When folding the cap assembly, first fold the top fold plate 7 to the position pressing against the top of the outer panel 2 and the reinforcing plate assembly. Then, the connecting assembly, flat pressure plate 11, fold plate d10, and through plate 9 are passed through channels b401, c601, and a201 in sequence, making the fold plate c8 vertically distributed. Next, fold along both edges of the fold plate d10 in sequence, pressing the flat pressure plate 11 onto the top fold plate 7. Finally, connect the connecting assembly to the connecting assembly in the adjacent cap assembly. The top fold plates 7 in the adjacent cap assemblies abut against each other, forming a robust structure that enhances the pressure and impact resistance of the top of the packaging box.

[0035] The top folding plate 7 has a trapezoidal plate structure. The flat pressure plate 11 includes an integrally connected rectangular plate and a triangular plate. The rectangular plate presses down on the top of the top folding plate 7. The outer edge of the triangular plate runs in the same direction as the waist of the trapezoidal top folding plate 7. Thus, the top folding plate 7 and the flat pressure plate 11 work together to cover one-quarter of the square area on the top of the four outer plates 2. This one-quarter area is distributed in an isosceles triangle. The four sets of sealing components can completely cover the square area on the top of the four outer plates 2, thus achieving the sealing of the top of the packaging box.

[0036] Example 3

[0037] like Figures 1-12As shown, this embodiment proposes a foldable and unfoldable packaging box. Compared to Embodiment 2, in this embodiment, the connecting assembly includes a connecting plate a12 and a connecting plate b13 respectively connected to the flat pressure plate 11. When the connecting assembly is folded, the connecting plates a12, b13, and flat pressure plate 11 are perpendicular to each other. The connecting plate a12 has an insert 121, which includes an integrally connected arc-shaped strip a1211 and an arc-shaped strip b1212. The arc-shaped strip a1211 and... All arc-shaped strips b1212 are arc-shaped plate structures. The central axis of arc-shaped strip a1211 is parallel to the central axis of arc-shaped strip b1212. Arc-shaped strip b1212 is a movable end. The connecting plate b13 in the cap assembly is provided with a limiting hole 131 for the arc-shaped strip a1211 in the adjacent cap assembly and the arc-shaped strip b1212 that is folded and fits onto the arc-shaped strip a1211 to pass through and prevent the arc-shaped strip a1211 from popping out in the opposite direction. The limiting hole 131 is an arc-shaped hole.

[0038] When folding the connecting components, the connecting plates a12 and b13 are folded upwards to a position perpendicular to the flat pressure plate 11. Then, the insert 121 on the connecting plate a12 is pushed outwards, and the arc-shaped strip b1212 in the insert 121 is folded to a position that fits with the arc-shaped strip a1211. The insert 121 can then be projected into a shape that matches the limiting hole 131. The insert 121 can pass through the limiting hole 131 on the connecting plate b13 in the adjacent connecting components. At this time, the insert 121 is released, and the arc-shaped strip b1212 rebounds and can be stuck in the limiting hole 131 without coming off, thus realizing a detachable connection between adjacent connecting components.

[0039] The connecting plate a12 has a through hole a122, and the connecting plate b13 has a through hole b132. The through hole a122 in the connecting component is coaxial with the through hole b132 in the adjacent connecting component. The through hole allows users to easily insert their fingers to lift the packaging box, and a rope can also be threaded through the through hole for easy lifting.

[0040] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A foldable and unfoldable packaging box, characterized in that, include: The base plate (1) is a square flat plate structure; The enclosure assembly has four groups evenly distributed around the base plate (1). The four groups of enclosure assemblies are respectively connected to the four sides of the base plate (1). The enclosure assembly includes an outer panel (2), a reinforcing plate assembly that is folded and abutted against the outer panel (2), and a cover assembly that is folded, inserted and abutted against the top of the outer panel (2) and the reinforcing plate assembly. The outer panel (2) is connected to the edge of the base plate (1) and folded to be perpendicular to the base plate (1). The reinforcing plate assemblies in adjacent enclosure assemblies are detachably connected, and the cover assemblies in adjacent enclosure assemblies are detachably connected. When the enclosure assembly is fully unfolded, the reinforcing plate assembly, the outer panel (2) and the cover assembly are arranged in an L-shape. The reinforcing plate assembly includes a folded plate a (3), an inner side plate (4), a folded plate b (5), and an inner abutment plate (6). The outer side plate (2), folded plate a (3), inner side plate (4), folded plate b (5), and inner abutment plate (6) are connected in sequence. After the reinforcing plate assembly is folded, folded plate a (3) and folded plate b (5) are parallel. The outer side plate (2), inner abutment plate (6), and inner side plate (4) are distributed in sequence and parallel. The inner abutment plate (6) abuts against the outer side plate (2). The outer side plate (2) is provided with channel a (201), the inner side plate (4) is provided with channel b (401), and the inner side plate (6) is provided with channel c (601). Channel a (201), channel c (601) and channel b (401) are arranged in a straight line. The capping assembly includes a top folding plate (7), a folding plate c (8), an inserting plate (9), a folding plate d (10), a flat pressure plate (11), and a connecting assembly. The outer side plate (2), the top folding plate (7), the folding plate c (8), the inserting plate (9), the folding plate d (10), the flat pressure plate (11), and the connecting assembly are connected in sequence. The connecting assembly, the flat pressure plate (11), the folding plate d (10), and the inserting plate (9) pass through channels b (401), c (601), and a (201) in sequence. After the capping assembly is folded, the flat pressure plate (11), the top folding plate (7), and the inserting plate (9) are distributed in parallel from top to bottom, and the flat pressure plate (11) presses on the top folding plate (7). The folding plate c (8), the reinforcing plate assembly, the outer side plate (2), and the folding plate d (10) are distributed in parallel in sequence, and the folding plate d (10) presses on the outer surface of the outer side plate (2).

2. The folding and unfolding packaging box according to claim 1, characterized in that, After the outer side plate (2) and the folded reinforcing plate assembly are folded towards the bottom plate (1), a reserved space is formed between the bottom plate (1), the outer side plate (2) and the folding plate b (5) for the adjacent reinforcing plate assembly to be inserted.

3. A foldable and unfoldable packaging box according to claim 2, characterized in that, The inner side plate (4) is provided with a hollow channel (402) and forms a folding insert plate (41); the folding insert plate (41) includes a folding plate part (411), an insert plate part (412) and a baffle part (413) connected in sequence. The baffle part (413) is connected to each end of the insert plate part (412). The folding insert plate (41) has a T-shaped plate structure when it is flat. When the folding insert plate (41) is folded, the folding plate part (411) and the insert plate part (412) are arranged in an L-shape. The inner side plate (4) in the reinforcing plate assembly is provided with a hole (403) for the insert plate part (412) and the folded baffle part (413) on the inner side plate (4) of the adjacent reinforcing plate assembly to pass through and to prevent the baffle part (413) from being ejected in the opposite direction.

4. A foldable and unfoldable packaging box according to claim 1, characterized in that, The top folding plate (7) is a trapezoidal plate structure. The flat pressure plate (11) includes an integrally connected rectangular plate part and a triangular plate part. The rectangular plate part presses on the top of the top folding plate (7), and the outer edge of the triangular plate part runs in the same direction as the waist of the trapezoidal top folding plate (7).

5. A foldable and unfoldable packaging box according to claim 1, characterized in that, The connecting assembly includes a connecting plate a (12) and a connecting plate b (13) that are respectively connected to the flat plate (11). When the connecting assembly is folded, the connecting plate a (12), the connecting plate b (13) and the flat plate (11) are perpendicular to each other. The connecting plate a (12) has a strip (121), which includes an integrally connected arc-shaped strip a (1211) and an arc-shaped strip b (1212). Both the arc-shaped strip a (1211) and the arc-shaped strip b (1212) are arc-shaped plates. The structure is as follows: the central axis of the arc-shaped strip a (1211) is parallel to the central axis of the arc-shaped strip b (1212). The arc-shaped strip b (1212) is the movable end. The connecting plate b (13) in the cap assembly is provided with a limiting hole (131) for the arc-shaped strip a (1211) in the adjacent cap assembly and the arc-shaped strip b (1212) that is folded and fits on the arc-shaped strip a (1211) to pass through and prevent the arc-shaped strip a (1211) from being dislodged when it bounces back. The limiting hole (131) is an arc-shaped hole.

6. A foldable and unfoldable packaging box according to claim 5, characterized in that, A through hole a (122) is provided on the connecting plate a (12), and a through hole b (132) is provided on the connecting plate b (13). The through hole a (122) in the connecting assembly is coaxial with the through hole b (132) in the adjacent connecting assembly.

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