Plastic packaging box with multi-layer structure

Abstract

The utility model relates to the technical field of packaging boxes, in particular to a plastic packaging box with a multi-layer structure, which comprises a bottom box, a stacking box mounted at the top of the bottom box, a top box mounted at the top of the stacking box, side plates mounted on two sides of the bottom box, the stacking box and the top box, sliding rails fixedly connected with one ends, close to each other, of the side plates, and sliding rails fixedly connected with the sliding rails. Sliding grooves are formed in the two sides of the bottom box, the two sides of the stacking box and the two sides of the top box correspondingly and are in sliding connection with the sliding rails, limiting assemblies used for limiting the bottom box, the stacking box and the top box from sliding relative to the side plates are installed at the front ends of the bottom box, the stacking box and the top box correspondingly, and stacking assemblies used for fixing the stacking box are installed at the rear ends of the side plates correspondingly. According to the plastic packaging box with the multi-layer structure, the stacking assembly is controlled only by shifting the push block, and then the stacking box can be assembled and disassembled; when one layer of the packaging box is opened, the rotary knob is rotated to be matched with sliding operation, so that the advantages that the number of layers can be flexibly adjusted, single-layer opening is convenient, and connection is stable and reliable are achieved.

Description

Technical Field

[0001] This utility model relates to the field of packaging box technology, and in particular to a multi-layer plastic packaging box. Background Technology

[0002] In today's society, plastic packaging boxes play a vital role in numerous fields due to their excellent comprehensive performance. In the food industry, they effectively isolate external air, moisture, and bacteria, extending the shelf life of food. Their transparent or personalized designs allow consumers to easily view the products, increasing their desire to purchase. In the electronics industry, plastic packaging boxes offer excellent cushioning and shock absorption, resisting bumps and collisions during transportation and protecting delicate electronic components from damage. In the daily necessities industry, their diverse shapes and colors not only meet the storage needs of products but also beautify goods and enhance brand recognition. Furthermore, with the rapid development of the logistics industry and the booming e-commerce economy, the market demand for plastic packaging boxes, as an important carrier for the transportation and sale of goods, continues to rise.

[0003] However, existing plastic packaging boxes have many limitations in actual use and are difficult to meet diverse market demands. Most traditional plastic packaging boxes are single-layer or fixed-layer structures, which are not very flexible when facing packaging needs for different quantities and volumes of goods. For example, when packaging a small number of goods, oversized packaging boxes will waste space and increase transportation costs and warehouse space occupation. When packaging a large number of goods, single-layer or fixed-layer packaging boxes cannot meet the capacity requirements, and multiple packaging boxes must be used for packaging. This not only increases the cost of packaging materials but also reduces packaging efficiency and is not conducive to the overall display and management of goods.

[0004] Therefore, it is necessary to provide a new multi-layered plastic packaging box to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a multi-layer plastic packaging box.

[0006] The multi-layer plastic packaging box provided by this utility model includes: a bottom box, a stacking box installed on the top of the bottom box, a top box installed on the top of the stacking box, side panels installed on both sides of the bottom box, the stacking box, and the top box, a slide rail fixedly connected to one end of the side panels that are close to each other, a sliding groove opened on both sides of the bottom box, the stacking box, and the top box, the sliding groove being slidably connected to the slide rail, a limiting component installed at the front end of the bottom box, the stacking box, and the top box to limit the relative sliding between the bottom box, the stacking box, the top box and the side panels, and a stacking component installed at the rear end of the side panels to fix the stacking box.

[0007] Preferably, the limiting component includes: a gear, a rack, and a torsion spring. The gear is rotatably connected inside the front end of the bottom box, the stacking box, and the top box. The gear is meshed with a rack on both the upper and lower sides. The rack is slidably connected to the bottom box, the stacking box, and the top box, respectively. The two ends of the rack are toothless and inserted into the side plates. The torsion spring is fixedly connected inside the gear. The middle part of the torsion spring is fixedly connected to the bottom box, the stacking box, and the top box, respectively.

[0008] Preferably, the stacking assembly includes: insert blocks, slots, locking blocks, and compression springs. Insert blocks are symmetrically fixedly connected to the bottom of the side panels connected to the stacking box and the top box. Slots are symmetrically opened on the top of the side panels connected to the bottom box and the stacking box. Insert blocks are inserted into the slots. Locking blocks are symmetrically slidably connected inside the side panels with slots. The locking blocks lock with the insert blocks. A compression spring is fixedly connected to the opposite end of each locking block. The opposite end of each compression spring is fixed to the side panel.

[0009] Preferably, the front ends of the bottom box, the stacking box, and the top box are all rotatably connected to knobs, and the outer walls of the knobs are provided with anti-slip textures.

[0010] Preferably, the torsion spring applies a clockwise rotational force to the gear.

[0011] Preferably, a pusher block is fixedly connected to one side of the card block.

[0012] Preferably, the pusher is embedded inside the side plate, and the side plate connected to the bottom box and the stacking box has symmetrical slots.

[0013] Preferably, a top plate is fixedly connected to the top of the side plate connected to the top box.

[0014] Compared with related technologies, the multi-layer plastic packaging box provided by this utility model has the following beneficial effects:

[0015] The number of layers can be adjusted flexibly:

[0016] This multi-layered plastic packaging box features a unique stacking component design, allowing for flexible addition or removal of layers. When packaging a large quantity of goods, new stacking boxes can be easily placed on top of existing ones, securely connected using a stacking component consisting of inserts, slots, latches, and compression springs. Specifically, the inserts and slots work together for initial positioning, while the latches engage with the inserts under the action of compression springs, ensuring a tight fit between the layers and preventing separation due to vibration during transport. When packaging a small quantity of goods, excess stacking boxes can be easily removed one by one, reducing the overall volume of the packaging box and avoiding space waste. This flexible layer adjustment function allows the packaging box to adapt to the packaging needs of different quantities and volumes of goods, effectively reducing warehousing and transportation costs, improving the utilization rate of packaging materials, and also reducing problems such as low packaging efficiency and inconvenient product management caused by using multiple packaging boxes for repackaging.

[0017] Single-layer opening is convenient:

[0018] When opening a layer of the packaging box, the user only needs to turn the knob at the front to release the restriction between that layer and the side panel through the limiting component. The anti-slip texture design on the outer wall of the knob makes the turning operation easier and less strenuous. The knob drives the gear to rotate, and the gear overcomes the force of the torsion spring to drive the rack to slide in the middle, so that the toothless parts at both ends of the rack are pulled out from the side panel, quickly releasing the restriction. Due to the sliding connection structure of the slide groove and the slide rail, after the restriction is released, the user can directly push the packaging box along the slide rail to open it without the need for any tools. The operation process is simple and convenient. Compared with the traditional multi-layer packaging boxes that require complicated steps or tools to open, it greatly improves the user experience, especially suitable for scenarios where products need to be frequently accessed.

[0019] The connection is stable and reliable.

[0020] Whether it's the connection between the bottom box, stacking boxes, top box, and side panels, or the connection between stacking boxes themselves, this packaging box possesses reliable stability. The side panels are slidably connected to the box body via slide rails and grooves, and with the restraining effect of limiting components, relative sliding between the box body and side panels is effectively prevented under normal conditions. The stacking components between stacking boxes ensure a tight connection between each stacked layer through precise positioning of inserts and slots, secure engagement of blocks and inserts, and continuous elasticity provided by compression springs. Even when subjected to strong vibrations, compression, or other external forces during transportation, the various parts of the packaging box remain stably connected, greatly reducing the risk of damage to goods due to a loose packaging structure and providing reliable protection for the goods. It is especially suitable for packaging electronic products, fragile items, and other goods with high transportation safety requirements. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of the multi-layer plastic packaging box provided by this utility model;

[0022] Figure 2 for Figure 1 The second schematic diagram of the multi-layered plastic packaging box shown;

[0023] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the bottom box located at the slot.

[0024] Figure 4 for Figure 1 A schematic diagram of the cross-sectional structure of the stacked box shown;

[0025] Figure 5 for Figure 4 The diagram shows the internal structure of the gear.

[0026] Figure 6 for Figure 1 The diagram shows the structure of the side plate.

[0027] The following are the labels in the diagram: 1. Base box; 2. Stacking box; 3. Top box; 4. Side plate; 5. Slide rail; 6. Slide groove; 7. Gear; 8. Rack; 9. Torsion spring; 10. Insert block; 11. Slot; 12. Locking block; 13. Compression spring; 14. Knob; 15. Push block; 16. Slot; 17. Top plate. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0029] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0030] Please see Figures 1 to 6 A multi-layer plastic packaging box includes: a bottom box 1, a stacking box 2 mounted on the top of the bottom box 1, a top box 3 mounted on the top of the stacking box 2, side panels 4 mounted on both sides of the bottom box 1, the stacking box 2, and the top box 3, a slide rail 5 fixedly connected to one end of the side panels 4 that is close to each other, a sliding groove 6 opened on both sides of the bottom box 1, the stacking box 2, and the top box 3, the sliding groove 6 being slidably connected to the slide rail 5, a limiting component for limiting the relative sliding between the bottom box 1, the stacking box 2, the top box 3 and the side panels 4 mounted at the front end of the bottom box 1, the stacking box 2, the top box 3, and the side panels 4 mounted at the rear end of the side panels 4, a stacking component for fixing the stacking box 2, and a top plate 17 fixedly connected to the top of the side panel 4 connected to the top box 3.

[0031] It should be noted that the top plate 17 can protect and prevent dust from the top of the top box 3, and also enhance the stability of the entire packaging box structure.

[0032] Please see Figure 1 , Figure 4 and Figure 5 The limiting components include: gear 7, rack 8, and torsion spring 9. Gear 7 is rotatably connected inside the front end of the bottom box 1, stacking box 2, and top box 3. Rack 8 is meshed with the upper and lower sides of gear 7. Rack 8 is slidably connected to the bottom box 1, stacking box 2, and top box 3 respectively. The two ends of rack 8 are toothless and inserted into the side plate 4. Torsion spring 9 is fixedly connected inside gear 7. The middle part of torsion spring 9 is fixedly connected to the bottom box 1, stacking box 2, and top box 3 respectively. Knob 14 is rotatably connected to the front end of the bottom box 1, stacking box 2, and top box 3. The outer wall of knob 14 is provided with anti-slip texture. Torsion spring 9 applies a clockwise rotational force to gear 7.

[0033] It should be noted that the torsion spring 9 fixedly connected inside the gear 7 applies a clockwise rotational force to the gear 7. Under normal conditions, this force keeps the gear 7 in its initial position, and the toothless parts at both ends of the rack 8 are inserted into the side plate 4.

[0034] Please see Figure 1 and Figure 3 The stacking assembly includes: insert blocks 10, slots 11, locking blocks 12, and compression springs 13. Insert blocks 10 are symmetrically fixedly connected to the bottom of the side plates 4 connected to the stacking box 2 and the top box 3. Slots 11 are symmetrically opened on the top of the side plates 4 connected to the bottom box 1 and the stacking box 2. Insert blocks 10 are inserted into slots 11. Locking blocks 12 are symmetrically slidably connected inside the side plates 4 with slots 11. Locking blocks 12 are locked to insert blocks 10. Compression springs 13 are fixedly connected to the opposite ends of locking blocks 12. The opposite ends of compression springs 13 are fixed to the side plates 4. Push blocks 15 are fixedly connected to one side of locking blocks 12. Push blocks 15 are embedded inside the side plates 4. Slots 16 are symmetrically opened on the side of the side plates 4 connected to the bottom box 1 and the stacking box 2.

[0035] It should be noted that the embedded push block 15 can prevent it from being accidentally activated during transportation or storage, and the design of the slot 16 can provide workers with enough space to push the push block 15.

[0036] The working principle of the multi-layer plastic packaging box provided by this utility model is as follows:

[0037] Open the packaging box:

[0038] When it is necessary to open a certain layer of the packaging box, the user can turn the knob 14 at the front of the bottom box 1, the stacked box 2, or the top box 3 by hand. The outer wall of the knob 14 is provided with anti-slip texture, which increases the friction between the hand and the knob 14, making the turning operation more convenient and effortless. The knob 14 is fixedly connected to the gear 7, so the rotation of the knob 14 will drive the gear 7 to rotate synchronously.

[0039] During rotation, gear 7 meshes with rack 8, driving rack 8 to slide within bottom box 1, stacking box 2, or top box 3. Torsion spring 9, fixedly connected inside gear 7, applies a clockwise rotational force to gear 7. Under normal conditions, this force keeps gear 7 in its initial position. The toothless portions at both ends of rack 8 are inserted into side plate 4, thereby limiting the relative sliding of bottom box 1, stacking box 2, and top box 3 with side plate 4 and ensuring the stability of the packaging box structure.

[0040] When the user turns knob 14 to drive gear 7 to rotate counterclockwise, gear 7 overcomes the force of torsion spring 9, causing rack 8, which meshes with gear 7, to slide towards the middle. The toothless parts at both ends of rack 8 are pulled out from side plate 4, releasing the restriction on this layer of packaging box. At this time, since both sides of bottom box 1, stacked box 2 and top box 3 are provided with sliding grooves 6, and the ends of side plates 4 that are close to each other are fixedly connected to slide rails 5, and sliding grooves 6 and slide rails 5 are slidably connected, after the restriction is released, the user can push this layer of packaging box to make it slide along slide rails 5 through sliding grooves 6, thereby opening the packaging box.

[0041] Add overlay layers:

[0042] When it is necessary to add a stacking box 2, first place the new stacking box 2 on top of the old stacking box 2; at this time, the plug 10 that is symmetrically fixed to the bottom of the side plate 4 connected to the new stacking box 2 is inserted into the slot 11 that is symmetrically opened at the top of the side plate 4 connected to the old stacking box 2 to complete the initial positioning.

[0043] Then, the user moves the push block 15 in the side slot 16 of the side panel 4 with their finger. The push block 15 is fixedly connected to the locking block 12. The movement of the push block 15 will cause the locking block 12 to slide symmetrically inside the side panel 4. A compression spring 13 is fixedly connected to one end of the locking block 12. When the locking block 12 is pushed, the compression spring 13 is compressed. When the locking block 12 moves to the position corresponding to the insertion block 10, under the elastic force of the compression spring 13, the locking block 12 pops out and engages with the insertion block 10, thereby achieving the limiting and fixing of the new stacking box 2.

[0044] After the new stacking box 2 is stacked and fixed, the top box 3 is placed on top of the top stacking box 2 in the same way. That is, the insert 10 at the bottom of the side plate 4 of the top box 3 is first inserted into the slot 11 at the top of the side plate 4 of the upper stacking box 2, and then the push block 15 drives the locking block 12 to engage with the insert 10, thus completing the addition of the entire stacking layer. The top plate 17 is fixedly connected to the top of the side plate 4 connected to the top box 3. The top plate 17 can protect and prevent dust from the top of the top box 3, and also enhance the stability of the entire packaging box structure.

[0045] Reduce the number of layers:

[0046] When it is necessary to reduce the number of stacked layers, first, push the push block 15 in the side groove 16 of the side panel 4 with your finger to drive the locking block 12 to slide inside the side panel 4. The compression spring 13 is compressed, the locking block 12 separates from the insertion block 10, and the restriction on the top box 3 is released. At this time, the user can remove the top box 3 from above the top stacked box 2.

[0047] Next, repeat the above operation for each stacking box 2 in order from top to bottom; that is, push the push block 15 to separate the locking block 12 from the insert block 10, release the limit, and then remove the stacking boxes 2 one by one; after removing all the stacking boxes 2 that need to be reduced, finally install the remaining top box 3, ensuring that it is firmly connected by the stacking assembly composed of the insert block 10, slot 11, locking block 12 and compression spring 13, so that the packaging box is restored to the appropriate number of stacking layers to meet the actual use requirements.

[0048] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-layered plastic packaging box, characterized in that, include: The bottom box (1) has a stack box (2) installed on top of the bottom box (1) and a top box (3) installed on top of the stack box (2). Side plates (4) are installed on both sides of the bottom box (1), the stack box (2) and the top box (3). A slide rail (5) is fixedly connected to one end of the side plates (4) that are close to each other. A sliding groove (6) is opened on both sides of the bottom box (1), the stack box (2) and the top box (3). The sliding groove (6) is slidably connected to the slide rail (5). A limiting component for limiting the relative sliding between the bottom box (1), the stack box (2) and the top box (3) and the side plate (4) is installed at the front end of the bottom box (1), the stack box (2) and the top box (3). A stacking component for fixing the stack box (2) is installed at the rear end of the side plate (4).

2. The multi-layered structure plastic packaging box according to claim 1, characterized in that, The limiting components include: gear (7), rack (8) and torsion spring (9). Gear (7) is rotatably connected inside the front end of the bottom box (1), stack box (2) and top box (3). Rack (8) is meshed with the upper and lower sides of the gear (7). The rack (8) is slidably connected to the bottom box (1), stack box (2) and top box (3) respectively. The two ends of the rack (8) are toothless and inserted into the side plate (4). Torsion spring (9) is fixedly connected inside the gear (7). The middle part of the torsion spring (9) is fixedly connected to the bottom box (1), stack box (2) and top box (3) respectively.

3. The multi-layered structural plastic packaging box according to claim 1, wherein, The stacking assembly includes: insert (10), slot (11), locking block (12) and compression spring (13). The bottom of the side plate (4) connected to the stacking box (2) and the top box (3) is symmetrically fixedly connected with insert (10). The top of the side plate (4) connected to the bottom box (1) and the stacking box (2) is symmetrically provided with slot (11). Insert (10) is inserted into slot (11). The inside of the side plate (4) with slot (11) is symmetrically slidably connected with locking block (12). Locking block (12) is locked with insert (10). The opposite end of locking block (12) is fixedly connected with compression spring (13). The opposite end of compression spring (13) is fixed to the side plate (4).

4. The multi-layered structural plastic packaging box according to claim 2, wherein, The front ends of the bottom box (1), the stacking box (2) and the top box (3) are all rotatably connected to a knob (14), and the outer wall of the knob (14) is provided with anti-slip texture.

5. The multiwall structure plastic packaging box according to claim 2, wherein, The torsion spring (9) applies a clockwise rotational force to the gear (7).

6. The multi-layered structural plastic packaging box according to claim 3, wherein, A pusher (15) is fixedly connected to one side of the card block (12).

7. The multi-layered structural plastic packaging box according to claim 6, wherein, The push block (15) is embedded inside the side plate (4), and the side plate (4) connected to the bottom box (1) and the stack box (2) has symmetrical slots (16) on its side.

8. The multi-layered structural plastic packaging box according to claim 1, wherein, The top of the side panel (4) connected to the top box (3) is fixedly connected to the top plate (17).

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