Plastic coaming box with locking function
By introducing a cam-driven force-enhancing and screw-support structure into the plastic enclosure box, the problems of loose locking structure and poor stability were solved, thereby improving stability and strength, and facilitating quick assembly and disassembly as well as information management.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU JIASHUO PLASTIC CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-24
AI Technical Summary
Existing plastic pallet boxes have simple locking structures that are prone to loosening, have poor stability, and lack supporting structures, making them easy to come loose during transportation.
The design employs a cam-driven force-enhancing structure and a threaded connection between the screw and the support rod, combined with anti-slip blocks and limit plates to enhance locking stability and overall strength, preventing loosening.
It effectively prevents loosening during transportation, improves the stability and overall strength of plastic pallet boxes, and facilitates quick assembly and disassembly, meeting the information needs of modern supply chains.
Smart Images

Figure CN224159589U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic pallet box technology, specifically a plastic pallet box with locking function. Background Technology
[0002] Collapsible crates are a type of recyclable and reusable packaging box, consisting of a base, a top cover, and foldable side panels. When the side panels are unfolded and combined with the base and top cover, they form a packaging box for product packaging and transportation. Folding the side panels allows the crate to be stored in a smaller volume, facilitating recycling. Due to their foldable and reusable features, collapsible crates can reduce storage and transportation volume, lower transportation costs, and achieve energy conservation, emission reduction, and environmental protection effects. They are widely used for packaging and transporting various parts, such as automotive components.
[0003] Existing plastic pallet boxes mostly use pin-type locking structures, which are relatively simple but prone to loosening during use. Furthermore, the lack of supporting structures on both sides results in poor stability of the plastic pallet boxes. Therefore, we propose a plastic pallet box with locking function. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a plastic pallet box with locking function. The use of cam force amplification can effectively prevent accidental loosening during transportation, while the threaded connection between the screw and the support rod can increase the overall strength of the plastic pallet box and also prevent the cover from loosening. This can effectively solve the problems in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic panel box with locking function, comprising a base and a locking unit;
[0006] Base: The top surface has a slot, the inside of the slot is engaged with the bottom end of the folding plate, the top end of the folding plate is inserted into the inside of the cover plate, and the top surface of the base is provided with a support unit.
[0007] Locking unit: includes a placement groove, a sliding groove, a sliding plate, an insert block, and a slot. There are two placement grooves, which are respectively opened on the front and rear sides of the top surface of the base. The placement groove is connected to the plate groove. The two sides of the interior of the placement groove are provided with sliding grooves. The sliding plate is slidably installed inside the sliding groove. The two ends of the outer side of the sliding plate are fixed with insert blocks. The slot is opened on the surface of the folding plate. The slot corresponds to the position of the insert block.
[0008] It also includes anti-slip blocks, of which there are four and are fixed to the four corners of the bottom surface of the base, and the anti-slip blocks are made of rubber.
[0009] The slide plate slides within the groove to insert the insert block into the slot and secure the folding plate. The anti-slip block can increase the stability of the plastic panel box.
[0010] Furthermore, the locking unit also includes a spring, a cam plate, a rotating wheel, and an adjusting groove. The spring is evenly fixed inside the placement groove, and the outer end of the spring is connected to the inner side of the slide plate. The adjusting groove is opened on the bottom surface of the base, and a rotating wheel is installed inside the adjusting groove. The top of the rotating wheel is connected to the middle of the bottom surface of the cam plate. The cam plate is located inside the placement groove. Rotating the rotating wheel causes the cam plate to press against the slide plate, which can prevent the insert from leaving the slot. The spring can automatically rebound when the cam plate is removed, so as to facilitate the quick assembly and disassembly of the plastic panel box.
[0011] Furthermore, the support unit includes a throttle, a screw, a rod holder, a support rod, and a rod groove. The rod groove is located in the center of the top surface of the base. Support rods are rotatably mounted on both sides inside the rod groove. There are two rod holders, which are respectively fixed to the middle of the left and right sides inside the folding plate. The rod holders are slidably mounted with the support rods. A screw is fixed to the bottom end of the throttle. The screw passes through the through hole on the top surface of the cover plate and is threadedly connected to the screw hole on the top surface of the support rod. The rod holder is slidably mounted on the outside of the support rod, and the screw is threadedly mounted with the screw hole on the top surface of the support rod to increase the overall strength of the plastic panel box and prevent the cover plate from falling off.
[0012] Furthermore, it also includes information cards and identification frames. The identification frames are fixed to the front side of the folding plate, and information cards are inserted inside the identification frames. The information cards inside the identification frames can be replaced according to the different placement of items to meet the information needs of modern supply chain.
[0013] Furthermore, it also includes a card plate and a card slot. The card plate is slidably installed on the outside of the rotating wheel, and the card slot is opened on the inner side of the adjustment groove. The card plate and the card slot are engaged and matched accordingly, and the card plate is inserted into the card slot to prevent the rotating wheel from rotating accidentally.
[0014] Furthermore, it also includes a limiting plate and a limiting groove. There are two limiting plates, which are fixed inside the cover plate in a front-to-back correspondence. There are two limiting grooves, which are respectively opened on the front and back sides of the top surface of the folding plate. The limiting grooves are in the same position as the limiting plates. The limiting plates are inserted into the limiting grooves to increase the sealing between the cover plate and the folding plate, so as to prevent impurities from entering due to excessive gaps.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This plastic panel box with locking function has the following advantages:
[0016] 1. The rotating wheel presses the convex plate against the slide plate, which prevents the insert from leaving the slot. The spring automatically rebounds when the convex plate is removed, making it easy for personnel to quickly assemble and disassemble the plastic panel box.
[0017] 2. The plastic panel box is slidably installed on the outside of the support rod by a rod frame, and the screw is used to install it with the screw hole on the top surface of the support rod to increase the overall strength of the plastic panel box, and at the same time prevent the cover from falling off.
[0018] 3. The information cards inside the label rack can be replaced according to the different placement of items to meet the information needs of modern supply chain. The limit plate inserted into the limit groove can increase the sealing between the cover plate and the folding plate to prevent impurities from entering due to excessive gaps. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the support unit structure of this utility model;
[0021] Figure 3 This is a schematic diagram of the locking unit structure of this utility model;
[0022] Figure 4 This is a schematic diagram of the bottom structure of the base of this utility model.
[0023] In the diagram: 1. Base, 2. Locking unit, 21. Placement slot, 22. Slide groove, 23. Slide plate, 24. Insert block, 25. Slot, 26. Spring, 27. Protrusion plate, 28. Rotary wheel, 29. Adjustment slot, 3. Support unit, 31. Turn handle, 32. Screw, 33. Rod frame, 34. Support rod, 35. Rod groove, 4. Plate groove, 5. Folding plate, 6. Cover plate, 7. Anti-slip block, 8. Information card, 9. Identification frame, 10. Card plate, 11. Card slot, 12. Limiting plate, 13. Limiting groove. Detailed Implementation
[0024] 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.
[0025] Please see Figure 1-4 This embodiment provides a technical solution: a plastic panel box with locking function, including a base 1 and a locking unit 2;
[0026] Base 1: The top surface has a plate groove 4, the inside of the plate groove 4 is engaged with the bottom end of the folding plate 5, and the top end of the folding plate 5 is engaged with the inside of the cover plate 6. The top surface of the base 1 is provided with a support unit 3, which includes a handle 31, a screw 32, a rod frame 33, a support rod 34 and a rod groove 35. The rod groove 35 is opened in the middle of the top surface of the base 1. The support rods 34 are rotatably installed on both sides inside the rod groove 35. There are two rod frames 33, which are fixed to the middle of the left and right sides inside the folding plate 5 respectively. The rod frames 33 and the support rods 34 are slidably installed. The bottom end of the handle 31 is fixed with a screw 32. The screw 32 passes through the through hole on the top surface of the cover plate 6 and is threadedly connected to the screw hole on the top surface of the support rod 34. The rod frame 33 is slidably installed on the outside of the support rod 34, and the screw 32 is threadedly installed with the screw hole on the top surface of the support rod 34 to increase the overall strength of the plastic enclosure box and prevent the cover plate 6 from falling off.
[0027] Locking unit 2 includes a placement groove 21, a sliding groove 22, a sliding plate 23, a plug 24, and a slot 25. There are two placement grooves 21, located on the front and rear sides of the top surface of the base 1, respectively. The placement grooves 21 are connected to the plate groove 4. Sliding grooves 22 are provided on both sides of the interior of the placement groove 21. The sliding plate 23 is slidably installed inside the sliding groove 22. Plugs 24 are fixed to both ends of the outer side of the sliding plate 23. The slot 25 is located on the surface of the folding plate 5, and the slot 25 corresponds to the position of the plug 24. Locking unit 2 also includes a spring 26, a protruding disc 27, a rotating wheel 28, and an adjusting groove 29. Springs 26 are evenly fixed inside the placement groove 21. The outer end of spring 26 is connected to the inner side of slide plate 23. Adjustment groove 29 is opened on the bottom surface of base 1. A rotating wheel 28 is installed inside the adjustment groove 29. The top of rotating wheel 28 is connected to the middle of the bottom surface of protrusion plate 27. Protrusion plate 27 is located inside the placement groove 21. Rotating rotating wheel 28 causes protrusion plate 27 to press against slide plate 23, which can prevent insert block 24 from leaving the slot 25. The spring 26 can automatically rebound when protrusion plate 27 is removed, so as to facilitate personnel to quickly disassemble and assemble plastic panel box.
[0028] The system also includes four anti-slip blocks 7, which are fixed to the four corners of the bottom surface of the base 1. The anti-slip blocks 7 are made of rubber. The sliding plate 23 slides in the groove 22 to allow the insert block 24 to be inserted into the slot 25 to fix the folding plate 5. The anti-slip blocks 7 can increase the stability of the plastic pallet box. The system also includes an information card 8 and an identification frame 9. The identification frame 9 is fixed to the front side of the folding plate 5. The information card 8 is inserted into the inside of the identification frame 9. The information card 8 inside the identification frame 9 can be replaced according to the different placement of items to meet the information needs of modern supply chain. The system also includes a card plate 10 and a card slot 11. The plate 10 is slidably mounted on the outside of the rotating wheel 28. The slot 11 is opened on the inner side of the adjustment groove 29. The plate 10 and the slot 11 are correspondingly engaged. The plate 10 is inserted into the slot 11 to prevent the rotating wheel 28 from rotating accidentally. It also includes a limiting plate 12 and a limiting groove 13. There are two limiting plates 12, which are fixed inside the cover plate 6 with front and rear corresponding to each other. There are two limiting grooves 13, which are opened on the front and rear sides of the top surface of the folding plate 5 respectively. The limiting grooves 13 and the limiting plates 12 are positioned corresponding to each other. The insertion of the limiting plate 12 into the limiting groove 13 can increase the sealing between the cover plate 6 and the folding plate 5 to prevent impurities from entering due to excessive gaps.
[0029] The working principle of the plastic collapsible box with locking function provided by this utility model is as follows: First, the support rod 34 inside the rod groove 35 is unfolded, and the bottom end of the folding plate 5 is inserted into the plate groove 4 for installation. The rod frame 33 is slidably installed on the outside of the support rod 34, and the screw rod 32 is threadedly installed with the screw hole on the top surface of the support rod 34 to increase the overall strength of the plastic collapsible box and prevent the cover plate 6 from falling off. The limiting plate 12 is inserted into the limiting groove 13 to increase the sealing between the cover plate 6 and the folding plate 5 to prevent the gap from being too large and causing impurities to enter. Then, the rotating wheel 28 is rotated to make the protruding plate 27 press against the sliding plate 23, so that the insert 24 is inserted into the slot 25, which can increase the locking force to prevent accidental loosening during transportation. The spring 26 can automatically rebound when the protruding plate 27 is removed to facilitate the quick disassembly of the plastic collapsible box.
[0030] 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 plastic pallet box with locking function, characterized in that: Includes a base (1) and a locking unit (2); Base (1): A plate groove (4) is provided on the top surface. The inside of the plate groove (4) is correspondingly engaged with the bottom end of the folding plate (5). The top end of the folding plate (5) is correspondingly inserted into the inside of the cover plate (6). A support unit (3) is provided on the top surface of the base (1). Locking unit (2): includes a placement groove (21), a sliding groove (22), a sliding plate (23), a plug (24), and a slot (25). There are two placement grooves (21) and they are respectively opened on the front and rear sides of the top surface of the base (1). The placement groove (21) is connected to the plate groove (4). The two sides of the placement groove (21) are provided with sliding grooves (22). The sliding plate (23) is slidably installed inside the sliding groove (22). The plug (24) is fixed at both ends of the outer side of the sliding plate (23). The slot (25) is opened on the surface of the folding plate (5). The slot (25) is corresponding to the position of the plug (24). It also includes anti-slip blocks (7), which are four in number and fixed at the four corners of the bottom surface of the base (1). The anti-slip blocks (7) are made of rubber.
2. A plastic pallet box with locking function according to claim 1, characterized in that: The locking unit (2) also includes a spring (26), a bump plate (27), a rotating wheel (28), and an adjustment groove (29). The spring (26) is evenly fixed inside the placement groove (21). The outer end of the spring (26) is connected to the inner side of the slide plate (23). The adjustment groove (29) is opened on the bottom surface of the base (1). The rotating wheel (28) is installed inside the adjustment groove (29). The top of the rotating wheel (28) is connected to the middle of the bottom surface of the bump plate (27). The bump plate (27) is located inside the placement groove (21).
3. A plastic pallet box with locking function according to claim 1, characterized in that: The support unit (3) includes a throttle (31), a screw (32), a rod frame (33), a support rod (34), and a rod groove (35). The rod groove (35) is located in the middle of the top surface of the base (1). Support rods (34) are rotatably installed on both sides inside the rod groove (35). There are two rod frames (33), which are fixed on the middle sides of the left and right sides inside the folding plate (5). The rod frames (33) and the support rods (34) are slidably installed. The bottom end of the throttle (31) is fixed with a screw (32). The screw (32) passes through the through hole on the top surface of the cover plate (6) and is threadedly connected to the screw hole on the top surface of the support rod (34).
4. A plastic pallet box with locking function according to claim 1, characterized in that: It also includes an information card (8) and an identification frame (9), the identification frame (9) being fixed to the front side of the folding plate (5), and the information card (8) being inserted inside the identification frame (9).
5. A plastic pallet box with locking function according to claim 2, characterized in that: It also includes a card plate (10) and a card slot (11). The card plate (10) is slidably mounted on the outside of the rotating wheel (28), and the card slot (11) is opened on the inner side of the adjustment groove (29). The card plate (10) and the card slot (11) are engaged in a corresponding engagement.
6. A plastic pallet box with locking function according to claim 1, characterized in that: It also includes a limiting plate (12) and a limiting groove (13). There are two limiting plates (12) and they are fixed inside the cover plate (6) in a front-to-back correspondence. There are two limiting grooves (13) and they are respectively opened on the front and back sides of the top surface of the folding plate (5). The positions of the limiting grooves (13) and the limiting plates (12) are corresponding.