Foldable plastic packaging box
By designing a foldable plastic packaging box and using components such as worm gears and worm wheels to fold and fix long and short boards, the problems of low space utilization, inconvenient operation, and instability of traditional plastic packaging boxes are solved, thereby improving warehousing and transportation efficiency and enhancing operational convenience and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional plastic packaging boxes have low space utilization efficiency, are inconvenient to handle and unstable, resulting in high warehousing and transportation costs and affecting packaging and unpacking efficiency.
A foldable plastic packaging box was designed, comprising a base plate, a top plate, a limiting structure, and a fixing structure. Through the coordinated work of components such as worm gear, limiting plate, rack, and sliding block, the folding and fixing of the long and short plates, as well as the rapid unfolding and folding of the top plate, are achieved.
It improves space utilization, reduces warehousing and transportation costs, enhances operational convenience and stability, ensures the safety of packaged goods, and improves packaging and unpacking efficiency.
Smart Images
Figure CN224075964U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging box technology, and in particular to a foldable plastic packaging box. Background Technology
[0002] In the modern commodity packaging industry, plastic packaging boxes have been widely adopted and applied in various industries due to their low cost, light weight and excellent easy processing and molding characteristics. However, traditional plastic packaging boxes have many problems in actual use.
[0003] First, low space utilization efficiency is a major problem faced by traditional plastic packaging boxes. Most traditional plastic packaging boxes adopt a fixed structure. When not in use, the space volume they occupy is almost the same as when in use. This causes great inconvenience in the storage and transportation of packaging boxes, resulting in a significant increase in storage costs and a decrease in transportation efficiency. For example, for large e-commerce companies or logistics centers, storing and transporting a large number of these non-foldable packaging boxes will occupy a lot of warehouse space and loading space of transport vehicles, which will increase operating costs.
[0004] Secondly, poor ease of operation is also a major pain point of traditional packaging boxes. During the packaging and unpacking process, the fixing and limiting structures of traditional packaging boxes are often not designed reasonably. Fixing the top plate is complicated, requires a lot of time and effort, and the fixing effect is not good. During handling and transportation, the top plate is easy to loosen or even fall off, resulting in damage to the items inside the packaging. Similarly, when unfolding and folding the packaging box, the existing limiting structure is cumbersome to operate and it is difficult to quickly complete the transformation of the packaging box, affecting the efficiency of packaging and unpacking.
[0005] Therefore, it is necessary to provide a new foldable plastic packaging box to solve the above-mentioned technical problems. Utility Model Content
[0006] To solve the above-mentioned technical problems, this utility model provides a foldable plastic packaging box.
[0007] The foldable plastic packaging box provided by this utility model includes: a bottom plate, a top plate, a limiting structure, and a fixing structure. A short plate is symmetrically and rotatably connected to the top of the bottom plate, and a long plate is symmetrically and rotatably connected to the top of the bottom plate. Grooves are provided on the top and sides of the long plate, and a ring is fixedly connected in the groove. The top plate is installed on the top of the short plate, and a sleeve groove is provided at the bottom of the top plate. The long plate and the short plate are both located inside the sleeve groove. A limiting structure for restricting the movement of the short plate and the long plate is installed inside the short plate, and a fixing structure for fixing the top plate is installed inside the top plate.
[0008] Preferably, the limiting structure includes: a first worm, a first worm wheel, a limiting plate, a rack, a limiting groove, a sliding column, a locking block, a locking groove, and a spring. The first worm is rotatably connected inside the short plate, and the first worm wheel is symmetrically rotatably connected inside the short plate. The first worm wheel meshes with the first worm. The limiting plate is symmetrically slidably connected inside the short plate above the first worm wheel. The rack is fixedly connected to the bottom of the limiting plate and meshes with the first worm wheel. A limiting groove is opened on the side of the long plate near the short plate, and the limiting plate is inserted into the limiting groove. A sliding column is slidably connected inside the long plate, and a locking block is fixedly connected to the bottom of the sliding column. A locking groove is opened at one end of the limiting plate, and the locking block engages with the locking groove. A spring is sleeved on the outside of the sliding column. One end of the spring is fixedly connected to the locking block, and the other end of the spring is fixedly connected to the inner wall of the long plate.
[0009] Preferably, the fixing structure includes: a rotating rod, a connecting block, a hook body, a second worm wheel, and a second worm. The rotating rod is rotatably connected inside the top plate. Both ends of the rotating rod are fixedly connected to the connecting block. One end of each connecting block is fixedly connected to the hook body. One end of the rotating rod is fixedly connected to the second worm wheel. The second worm is rotatably connected inside the top plate, and the second worm is meshed with the second worm wheel.
[0010] Preferably, a spline rod is inserted into the top of the first worm gear, and a first knob is fixedly connected to the top of each spline rod.
[0011] Preferably, the sides of the card block and the limiting plate that are close to each other are designed with an angle.
[0012] Preferably, the top of the slide column is fixedly connected to a pull block for pulling the slide column upward. The tops of the pull block and the first knob are flush with the top of the short plate, and the top of the short plate has multiple sets of slots for pulling out the pull block and the first knob.
[0013] Preferably, the bottom of the second worm extends out of the base plate and is fixedly connected to a second knob.
[0014] Preferably, the top plate is larger than the bottom plate, and the horizontal projection dimension of the groove opened at the bottom of the top plate is the same as the horizontal projection dimension of the bottom plate.
[0015] Compared with related technologies, the foldable plastic packaging box provided by this utility model has the following beneficial effects:
[0016] Efficient space utilization:
[0017] The long and short boards can be folded around the base plate at the connection point, significantly reducing the packaging box volume when not in use. Compared to traditional fixed plastic packaging boxes, multiple layers can be stacked compactly during storage, reducing storage space occupation and lowering storage costs. During transportation, it can also increase vehicle loading capacity and reduce transportation costs. The top plate is larger than the base plate, and the projected size of the slot is the same as the base plate. When unfolded, the top plate can accurately fit the long and short boards, ensuring structural stability. When folded, all components fit tightly together, making the overall structure compact and further improving space utilization.
[0018] User-friendly experience:
[0019] The first knob and the first worm gear are connected by a spline rod. Rotating the first knob can easily extend and retract the limiting plate, completing the limiting and releasing of the long plate and the short plate. The spline rod allows the first knob to move axially, making the operation flexible. The first knob is flush with the top of the short plate. The operation through the slot does not affect the placement of the top plate and is convenient to operate. Rotating the second knob can control the second worm gear to quickly fix and unlock the top plate. In both the unfolded and folded states, the top plate can be conveniently limited by the cooperation of the hook and the ring, and the slot and the long plate, improving the efficiency of packaging and unpacking.
[0020] Stable structural protection:
[0021] The first worm gear, first worm wheel, limiting plate, rack and pinion work together. After the limiting plate is inserted into the limiting groove, it effectively restricts the movement of the long plate and the short plate, ensuring vertical stability during use. The engagement of the locking block and the locking groove further enhances the reliability of the limiting and prevents accidental dislodgement. The rotating rod, connecting block, hook, second worm wheel and second worm gear work together. When unfolded, the hook is inserted into the top ring of the long plate, and the slot engages the long plate and the short plate to fix the top plate. When folded, the hook is inserted into the side ring of the long plate, and the slot engages with the long plate to ensure the stability of the top plate during transportation and protect the packaged goods.
[0022] Thoughtful and user-friendly design:
[0023] The top of the pull block and the first knob are flush with the top of the short plate, so as not to affect the overall appearance and the placement of the top plate. The slot on the top of the short plate makes it easy to pull out the pull block and pull out the first knob for rotation. It fully considers the user's operating habits and improves the user experience. The angled design of the locking block and the limiting plate makes it easy for the limiting plate to insert into the limiting slot when the long plate rotates, and it can also automatically squeeze the locking block so that it automatically locks into the slot in the right position without additional operation, which reflects the humanized concept. Attached Figure Description
[0024] Figure 1 A structural schematic diagram of the foldable plastic packaging box provided by this utility model;
[0025] Figure 2 for Figure 1A schematic diagram of the cross-sectional structure of the top plate shown;
[0026] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the short plate shown;
[0027] Figure 4 for Figure 3 The diagram shows the structure of the card block;
[0028] Figure 5 for Figure 4 The diagram shows the structure of the limiting block;
[0029] Figure 6 for Figure 1 The diagram shows the folding configuration of the foldable plastic packaging box.
[0030] The following are the labels in the diagram: 1. Base plate; 2. Short plate; 3. Long plate; 4. Ring body; 5. Top plate; 6. Slot; 7. First worm gear; 8. First worm wheel; 9. Limiting plate; 10. Rack; 11. Limiting slot; 12. Sliding column; 13. Locking block; 14. Locking groove; 15. Spring; 16. Rotating rod; 17. Connecting block; 18. Hook body; 19. Second worm wheel; 20. Second worm gear; 21. Spline rod; 22. First knob; 23. Locking groove; 24. Second knob; 25. Pulling block. Detailed Implementation
[0031] 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.
[0032] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0033] Please see Figures 1 to 6 A foldable plastic packaging box includes: a base plate 1, a top plate 5, a limiting structure, and a fixing structure. A short plate 2 is symmetrically and rotatably connected to the top of the base plate 1, and a long plate 3 is symmetrically and rotatably connected to the top of the base plate 1. Grooves are provided on the top and sides of the long plate 3, and a ring 4 is fixedly connected in the groove. The top plate 5 is installed on the top of the short plate 2, and a slot 6 is provided at the bottom of the top plate 5. The long plate 3 and the short plate 2 are both located inside the slot 6. A limiting structure for restricting the movement of the short plate 2 and the long plate 3 is installed inside the short plate 2. A fixing structure for fixing the top plate 5 is installed inside the top plate 5. The size of the top plate 5 is larger than that of the base plate 1, and the horizontal projection size of the slot 6 at the bottom of the top plate 5 is the same as the horizontal projection size of the base plate 1.
[0034] It should be noted that after the long plate 3 and the short plate 2 are vertically installed, the top plate 5 can be fitted onto the top of the long plate 3 and the short plate 2 through the slot 6.
[0035] Please see Figure 1 , Figures 3 to 5 The limiting structure includes: a first worm 7, a first worm wheel 8, a limiting plate 9, a rack 10, a limiting groove 11, a sliding column 12, a locking block 13, a locking groove 14, and a spring 15. The first worm 7 is rotatably connected inside the short plate 2, and the first worm wheel 8 is symmetrically rotatably connected inside the short plate 2. The first worm wheel 8 is meshed with the first worm 7. The limiting plate 9 is symmetrically slidably connected above the first worm wheel 8 inside the short plate 2. The rack 10 is fixedly connected to the bottom of the limiting plate 9 and meshes with the first worm wheel 8. The limiting groove 11 is opened on the side of the long plate 3 near the short plate 2. The limiting plate 9 is inserted into the limiting groove 11. The sliding column 12 is slidably connected inside the long plate 3, and a locking block is fixedly connected to the bottom of the sliding column 12. 13. A slot 14 is provided at one end of the limiting plate 9. The locking block 13 is engaged with the slot 14. A spring 15 is sleeved on the outside of the sliding column 12. One end of the spring 15 is fixedly connected to the locking block 13, and the other end of the spring 15 is fixedly connected to the inner wall of the long plate 3. A spline rod 21 is inserted into the top of the first worm gear 7. A first knob 22 is fixedly connected to the top of the spline rod 21. The sides of the locking block 13 and the limiting plate 9 that are close to each other are designed at an angle. A pull block 25 for pulling the sliding column 12 upward is fixedly connected to the top of the sliding column 12. The tops of the pull block 25 and the first knob 22 are flush with the top of the short plate 2. The top of the short plate 2 has multiple sets of latching slots 23 for pulling out the pull block 25 and the first knob 22.
[0036] It should be noted that: the design of the spline rod 21 allows the first knob 22 to move along the axial direction of the spline rod 21, and the first knob 22 can drive the first worm gear 7 to rotate through the spline rod 21. The angled design of the limiting plate 9 not only facilitates the insertion of the limiting plate 9 into the limiting groove 11 when the long plate 3 rotates, but also allows the limiting plate 9 to squeeze the locking block 13 during the process of entering the limiting groove 11, causing the locking block 13 to move upward. When the locking block 13 is aligned with the locking groove 14, the locking block 13 is locked into the locking groove 14 with the reset of the spring 15. The tops of the pull block 25 and the first knob 22 are flush with the top of the short plate 2 to prevent the pull block 25 and the first knob 22 from affecting the placement of the top plate 5. The locking groove 23 facilitates the operator to pull the pull block 25 on the one hand, and can lock the first knob 22 out of the short plate 2 on the other hand, facilitating the rotation of the first knob 22.
[0037] Please see Figure 1 and Figure 2The fixed structure includes: a rotating rod 16, a connecting block 17, a hook 18, a second worm gear 19, and a second worm 20. The rotating rod 16 is rotatably connected inside the top plate 5. Both ends of the rotating rod 16 are fixedly connected to the connecting block 17. One end of the connecting block 17 is fixedly connected to the hook 18. One end of the rotating rod 16 is fixedly connected to the second worm gear 19. The second worm 20 is rotatably connected inside the top plate 5. The second worm 20 is meshed with the second worm gear 19. The bottom of the second worm 20 extends out of the bottom plate 1 and is fixedly connected to the second knob 24.
[0038] It should be noted that when unfolded, the device can limit the top plate 5 by inserting the hook 18 into the ring 4 that is symmetrically fixed to the top of the long plate 3, and by fitting the groove 6 on the top of the long plate 3 and the short plate 2. When folded, the device can limit the top plate 5 by inserting the hook 18 into the ring 4 that is fixedly fixed to the sides of the two long plates 3, and by fitting the groove 6 on the top of the long plate 3.
[0039] The working principle of the foldable plastic packaging box provided by this utility model is as follows:
[0040] Unfolding process:
[0041] Open the long plate 3 and the short plate 2: In the initial state, the long plate 3 and the short plate 2 are rotatably connected to the base plate 1 and are in a folded state. First, the operator manually rotates the long plate 3 and the short plate 2 upwards in sequence around the rotatable connection with the base plate 1. During the rotation, the limiting groove 11 opened on the side of the long plate 3 near the short plate 2 gradually approaches the limiting structure inside the short plate 2.
[0042] The limiting structure works as follows: First, the short plate 2 is verticalized, and then the long plate 3 is rotated. When the long plate 3 and the short plate 2 are in contact, the first knob 22 is pulled out of the short plate 2 through the buckle 23. Then, the first knob 22 is rotated. The first knob 22 drives the first worm 7 to rotate through the spline rod 21. Since the first worm wheel 8 is meshed with the first worm 7, the first worm wheel 8 rotates accordingly. Since the rack 10 at the bottom of the limiting plate 9 is meshed with the first worm wheel 8, the limiting plate 9 will slide to both sides inside the short plate 2 and insert into the limiting groove 11. During the sliding process of the limiting plate 9, the limiting plate 9 will squeeze the locking block 13. The locking block 13 compresses the spring 15. When the limiting plate 9 is fully extended, the slot 14 is aligned with the locking block 13. The spring 15 resets and squeezes the locking block 13 so that the locking block 13 is locked into the slot 14, thereby limiting the rotation of the long plate 3 and the short plate 2 and keeping them in the vertical working position. Then, the first knob 22 is pressed into the buckle at the top of the short plate 2.
[0043] Fixing the top plate 5: After the long plate 3 and the short plate 2 are fixed, place the top plate 5 on top of the long plate 3 and the short plate 2. The groove 6 at the bottom of the top plate 5 is fitted onto the top of the long plate 3 and the short plate 2 to initially position the top plate 5. Then, turn the second knob 24. The second knob 24 drives the second worm 20 to rotate. The second worm wheel 19, which meshes with the second worm 20, rotates accordingly, which in turn drives the rotating rod 16 to rotate. The connecting blocks 17 and the hooks 18 at both ends of the rotating rod 16 will also rotate, so that the hooks 18 are inserted into the rings 4 that are symmetrically fixed to the top of the long plate 3, thus completing the fixing of the top plate 5. At this time, the packaging box is unfolded and can be used to store items.
[0044] Folding process:
[0045] To loosen the top plate 5: First, rotate the second knob 24 in the opposite direction, so that the second worm 20 drives the second worm wheel 19 to rotate in the opposite direction. The rotating rod 16 and the hook 18 also rotate in the opposite direction, so that the hook 18 is disengaged from the ring 4 at the top of the long plate 3, thus releasing the fixation on the top plate 5.
[0046] Release the limit: Use your finger to pry out the pull block 25 through the buckle groove 23 at the top of the short plate 2, and pull the pull block 25 upward. The sliding column 12 and the locking block 13 will also move upward, so that the locking block 13 will disengage from the locking groove 14 at one end of the limiting plate 9. Rotate the long plate 3 to disengage the long plate 3 from the short plate 2, and then disengage the limiting plate 9 from the limiting groove 11. Then, pull the first knob 22 out of the short plate 2 through the buckle groove 23. Rotate the first knob 22 in the opposite direction. The first knob 22 drives the first worm gear 7 to rotate in the opposite direction through the spline rod 21, so that the limiting plate 9 moves closer to the middle of the short plate 2, so as to prevent the limiting plate 9 from affecting the folding of the long plate 3 after the short plate 2 is folded. Then, press the first knob 22 into the buckle groove 23 at the top of the short plate 2.
[0047] Folding the long plate 3 and the short plate 2: After the limit is released, manually fold the short plate 2 and the long plate 3 downwards in sequence around the rotating connection with the bottom plate 1. When the short plate 2 and the long plate 3 are folded to the appropriate position, place the top plate 5 on the side of the long plate 3, so that the hook 18 is inserted into the ring 4 fixedly connected to the side of the long plate 3. At the same time, the slot 6 is fitted on the top of the long plate 3. Turn the second knob 24, and the second knob 24 drives the second worm 20 to rotate. The second worm wheel 19 meshing with the second worm 20 rotates accordingly, which in turn drives the rotating rod 16 to rotate. The connecting blocks 17 and the hook 18 at both ends of the rotating rod 16 will also rotate, so that the hook 18 is inserted into the ring 4 fixedly connected to the groove on the side of the long plate 3, thus completing the fixation of the top plate 5 and completing the folding of the packaging box. At this time, storage space can be saved. Finally, the bottom plate 1 is located in the first layer, the two short plates 2 are located in the second layer, the two long plates 3 are located in the third layer, and the top plate 5 is located in the fourth layer.
[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 collapsible plastic packaging box, characterized in that, The utility model relates to a kind of limit structure and fixed structure of symmetrical rotating plate. Bottom plate (1), the top of bottom plate (1) is symmetrically connected with short plate (2) rotationally, the top of bottom plate (1) is symmetrically connected with long plate (3) rotationally, the top and side of long plate (3) are all set with recess, recess is fixedly connected with ring body (4); Top plate (5), the top of short plate (2) is installed with top plate (5), top plate (5) bottom is set with sleeve slot (6), long plate (3) and short plate (2) are all located in the inside of sleeve slot (6); Limiting structure, for limiting short plate (2) and long plate (3) activity; Fixed structure, for fixing top plate (5).
2. The collapsible plastic packaging box according to claim 1, wherein, Limiting structure includes: first worm (7), first worm wheel (8), limiting plate (9), rack (10), limiting slot (11), slide column (12), clamping block (13), clamping slot (14) and spring (15), first worm (7) is rotatably connected in short plate (2), first worm wheel (8) is rotatably connected symmetrically in short plate (2), first worm wheel (8) is meshingly connected with first worm (7), limiting plate (9) is slidably connected above first worm wheel (8) in short plate (2), the bottom of limiting plate (9) is fixedly connected with rack (10), rack (10) is meshingly connected with first worm wheel (8), limiting slot (11) is set on the side of long plate (3) close to short plate (2), limiting plate (9) is inserted with limiting slot (11), the inside of long plate (3) is slidably connected with slide column (12), the bottom of slide column (12) is fixedly connected with clamping block (13), one end of limiting plate (9) is set with clamping slot (14), clamping block (13) is clamped with clamping slot (14), the outside of slide column (12) is sleeved with spring (15), one end of spring (15) is fixedly connected with clamping block (13), the other end of spring (15) is fixedly connected with the inner wall of long plate (3).
3. The collapsible plastic packaging box according to claim 1, wherein, Fixed structure includes: rotating rod (16), connecting block (17), hook body (18), second worm wheel (19) and second worm (20), the inside of top plate (5) is rotatably connected with rotating rod (16), the two ends of rotating rod (16) are all fixedly connected with connecting block (17), the one end of connecting block (17) is all fixedly connected with hook body (18), the one end of rotating rod (16) is fixedly connected with second worm wheel (19), the inside of top plate (5) is rotatably connected with second worm (20), second worm (20) is meshingly connected with second worm wheel (19).
4. The collapsible plastic packaging box according to claim 2, wherein, The top of first worm (7) is inserted with spline rod (21), the top of spline rod (21) is all fixedly connected with first knob (22).
5. The collapsible plastic packaging box according to claim 2, wherein, The side of clamping block (13) and limiting plate (9) mutually close is all designed with bevel.
6. The collapsible plastic packaging box according to claim 4, wherein, The top of slide column (12) is fixedly connected with pull block (25) for pulling slide column (12) upward, the top of pull block (25) and first knob (22) is flush with the top of short plate (2), and the top of short plate (2) is set with multiple groups of buckle groove (23) for pulling out pull block (25) and first knob (22).
7. The collapsible plastic packaging box according to claim 3, wherein, The bottom of second worm (20) is fixedly connected with second knob (24) and extends bottom plate (1).
8. The collapsible plastic packaging box according to claim 1, wherein, The size of the top plate (5) is larger than that of the bottom plate (1), and the horizontal projection size of the sleeve groove (6) formed at the bottom of the top plate (5) is the same as that of the bottom plate (1).