A combined turnover box

Abstract

This utility model provides a modular turnover box, relating to the field of turnover box technology. The utility model includes a horizontally arranged base plate, vertically distributed side panels and a long panel, and a connecting frame for splicing and extending the box. Cylindrical insertion posts are vertically fixed to both ends of the side panels along their length. Insertion slots adapted to the insertion posts are correspondingly opened at both ends of the long panel along its length, allowing the insertion posts to be inserted horizontally into the slots. T-shaped square grooves are recessed at the four corners of the outer surfaces of the base plate and the connecting frame. Two sets of connecting structures are respectively protruding vertically at the top and bottom ends of the long panel. This utility model achieves full detachability through the snap-fit ​​of the connecting structure with the square grooves and the insertion of the insertion posts with the insertion slots. After disassembly, the components can be stacked, significantly reducing warehousing costs. The connecting frame allows two turnover boxes to be quickly spliced ​​into an extended version, adapting to the transportation needs of items of different lengths, reducing inventory specifications, and expanding the applicability range.

Description

Technical Field

[0001] This utility model relates to the field of turnover box technology, and in particular to a combined turnover box. Background Technology

[0002] Turnover boxes, as lightweight and heat-insulating packaging containers, are widely used in low-temperature refrigerated transportation scenarios such as food and seafood. Their main material is polystyrene foam (containing micropores, which has good heat insulation properties), and they are low in cost and affordable.

[0003] Most existing turnover boxes are one-piece molded structures, requiring the selection of the appropriate size based on the item dimensions, resulting in a wide variety of inventory. Furthermore, because they cannot be disassembled after use, empty boxes occupy a significant amount of space (e.g., a single 600mm x 400mm turnover box has an empty volume of approximately 0.08m³). 3 100 units would require 8m 3 (Storage space); if forcibly disassembled, the foam structure will be damaged, making it unusable, which not only increases costs but also leads to poor environmental performance due to its single-use nature. Utility Model Content

[0004] The purpose of this utility model is to provide a modular turnover box to solve the problems in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a modular turnover box, comprising a horizontally arranged base plate, vertically distributed side panels and a long panel, and a connecting frame for splicing and lengthening. Both ends of the side panels along their length are vertically fixed with cylindrical insertion posts. Both ends of the long panel along its length are correspondingly provided with insertion slots adapted to the insertion posts. The insertion posts can be inserted horizontally into the insertion slots to achieve a detachable connection between the side panels and the long panel. T-shaped square grooves are recessed at the four corners of the outer surfaces of the base plate and the connecting frame. Two sets of connecting structures are respectively protruding vertically at the upper and lower ends of the long panel. The connecting structures can be inserted vertically into the square grooves and fixed by snap-fit.

[0006] When assembling a single turnover box, the upper and lower base plates are set in parallel opposite directions. The two long side panels are vertically inserted into the square groove of the lower base plate through the lower end connecting structure, and the two long side panels are distributed in parallel and spaced apart. The two ends of the side panels are horizontally connected to the same end of the two long side panels through the plug-in columns to form a rectangular frame. The upper base plate is snapped into the upper end connecting structure of the long side panels through the square groove to close the top.

[0007] When assembling the extended turnover box, take two of the above-mentioned individual turnover boxes, remove the base plates on opposite sides, place the connecting frame between the two turnover boxes, and have the square grooves on both sides of the connecting frame engage with the connecting structures at the ends of the long side panels of the two turnover boxes to achieve coaxial splicing of the two turnover boxes.

[0008] The connection structure includes a T-shaped seat. One end of the T-shaped seat is fixed to the side of the long panel by bolts. An elastic element and a snap-fit ​​block are respectively provided on both sides of the T-shaped seat in the horizontal direction. One end of the elastic element is fixed to the side of the T-shaped seat, and the other end is fixed to the inner side of the snap-fit ​​block. In the natural state, the snap-fit ​​block extends outward under the pushing force of the elastic element.

[0009] Preferably, the height of the outer end of the buckle block is less than the height of the inner end, forming a wedge-shaped structure, and the outer end edge is rounded. When the connecting structure is inserted into the square groove, the arc-shaped edge of the buckle block can slide in contact with the inner wall of the square groove and contract inward under the action of extrusion force (elastic element compression), which facilitates smooth insertion.

[0010] Preferably, two cylindrical magnetic rods are vertically fixed to both sides of the T-shaped seat. The elastic element is a helical spring sleeved around the magnetic rods. A pull rod slides through the center of the T-shaped seat in the horizontal direction. One end of the pull rod passes through the central hole of one magnetic rod and is fixed to the inner side of the buckle block on that side. The other end passes through the central hole of the other magnetic rod and the central hole of the other buckle block in sequence, and extends to the outer side of the buckle block on that side. An annular sleeve is sleeved on the outer surface of the extended end. Pulling the annular sleeve can drive the pull rod to move in the horizontal direction, thereby simultaneously pulling the buckle blocks on both sides to retract inward.

[0011] Preferably, the outer end of the buckle block has a buckle protrusion in the vertical direction, and the buckle protrusion is integrally formed with the buckle block.

[0012] Preferably, the bottom of the inner wall of the square groove is provided with a positioning groove that matches the snap-fit ​​protrusion in the vertical direction, and a through hole is provided on the side wall of the square groove away from the long surrounding plate for the pull rod to pass through. When the connecting structure is assembled with the square groove, the snap-fit ​​protrusion can slide vertically along the positioning groove to guide the movement direction of the snap-fit ​​block. After the pull rod passes through the through hole, the snap-fit ​​block and the magnetic rod can be attracted or separated by pulling the ring sleeve, so as to realize the snap-fit ​​or separation of the connecting structure and the square groove.

[0013] Preferably, the upper surfaces of the base plate and the connecting frame are vertically protruded with alignment protrusions on both sides of each square groove. The spacing between the two alignment protrusions is adapted to the thickness of the long surrounding plate. When the long surrounding plate is installed, its two sides can fit against the sides of the alignment protrusions to quickly align the position of the connecting structure with the square groove.

[0014] Preferably, an arc-shaped handle is fixed to the middle of the outer side of the side panel, and the two ends of the handle are fixed to the outer surface of the side panel to form a space for hand gripping.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. The entire component can be disassembled by the snap-fit ​​block and the square groove of the connecting structure, and the plug-in post and the plug-in slot. After disassembly, the components can be stacked, which greatly reduces storage costs.

[0017] 2. Two turnover boxes can be quickly spliced ​​together to form an extended version through the connecting frame, which can meet the transportation needs of items of different lengths, reduce inventory specifications, and expand the scope of application.

[0018] 3. The cooperation between the elastic element and the snap-fit ​​block ensures that the connection structure is firmly engaged with the square groove, and the magnetic rod assists in positioning during disassembly; the interference fit between the plug-in post and the plug-in slot ensures the stable connection between the side panel and the long panel; the design of the handle and the ring makes handling and disassembly easier and is suitable for fast turnover scenarios.

[0019] 4. All components are detachable and the connection structure is not easily damaged, allowing for reuse and reducing the consumption of disposable foam products; the polystyrene foam material is recyclable, further enhancing environmental friendliness and reducing long-term usage costs. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the combined turnover box of this utility model;

[0021] Figure 2 This is an exploded view of the combined turnover box of this utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of a single turnover box according to the present invention;

[0023] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the connection structure of this utility model.

[0025] Legend: 1. Base plate; 2. Alignment protrusion; 3. Handle; 4. Side panel; 5. Long panel; 6. Insertion post; 7. Insertion groove; 8. Square groove; 9. Connection structure; 91. T-shaped seat; 92. Elastic element; 93. Buckle block; 94. Pull rod; 95. Magnetic rod; 96. Snap protrusion; 97. Ring; 10. Connecting frame. Detailed Implementation

[0026] Example 1, as Figure 1-5 As shown, this utility model discloses a modular turnover box that can be quickly assembled, disassembled, and extended, and is suitable for low-temperature refrigerated transportation of food, seafood, etc. The following describes the specific structure and operation process in detail:

[0027] The base plate 1 is made of polystyrene foam board and is rectangular flat. Square grooves 8 are provided at the four corners of its outer surface. The T-shaped cross-sectional dimensions of the square grooves 8 are adapted to the T-shaped seat 91. Aligned protrusions 2, made of the same material as the base plate 1, are provided on both sides of each square groove 8 and are fixed by hot-melt bonding. The spacing between two aligned protrusions 2 is adapted to the thickness of the long surrounding plate 5. Both the long surrounding plate 5 and the side surrounding plate 4 are made of polystyrene foam board (with the same density as the base plate). The length of the long surrounding plate 5 is the same as the long side length of the base plate 1, and the length of the side surrounding plate 4 is the same as the short side length of the base plate 1. The insertion posts 6 at both ends of the side surrounding plate 4 are made of ABS plastic (resistant to low temperatures from -20℃ to 20℃) and are fixed to the side surrounding plate 4 by inlay. The insertion grooves 7 of the long surrounding plate 5 and the insertion posts 6 form an interference fit to ensure a stable connection. The T-shaped seat 91 is made of ABS plastic and is connected to the long side panel 5 by M5 bolts (M5 plastic nuts are pre-embedded inside the long side panel 5, and the bolts thread through the long side panel 5 to engage with the nuts, preventing the foam board from cracking). The elastic element 92 is a stainless steel helical spring, the buckle block 93 is made of ABS plastic, and the wedge-shaped structure has an inclination angle of 30°. The magnetic rod 95 is a neodymium iron boron magnet to ensure stable adsorption of the buckle block 93. The pull rod 94 is a stainless steel rod, and its length is longer than the distance between the magnetic rods 95 on both sides of the T-shaped seat 91. The ring 97 is made of rubber and has an interference fit with the pull rod 94 for easy finger pulling. The connecting frame 10 has a similar structure to the base plate 1, and is a rectangular frame (with a hollow center to reduce weight). The square groove 8 and the alignment protrusion 2 are the same size as the base plate 1, and their lengths are the same as the short side length of the base plate 1, used for splicing two turnover boxes. The handle 3 is made of PP plastic and is fixed to the outer surface of the side panel 4 with hot melt adhesive. Its curvature fits the hand and makes it easy to apply force when carrying.

[0028] Assembly of a single turnover box: Place the lower base plate 1 horizontally on a flat surface. Take two long side plates 5 and align the connecting structure 9 at the lower end of the long side plates 5 with the square grooves 8 at both ends of the long side of the base plate 1. The sides of the long side plates 5 should fit against the sides of the alignment protrusions 2 (quick positioning via the alignment protrusions 2 to prevent misalignment between the connecting structure 9 and the square grooves 8). Push the long side plates 5 downwards, and the T-shaped seat 91 will cause the buckle block 93 to insert into the square groove 8. The arc-shaped edge of the buckle block 93 will slide into contact with the inner wall of the square groove 8 and contract inwards under pressure (compression by the elastic element 92). The buckle protrusion 96 will slide vertically down along the positioning groove. When the buckle block 93 is fully inserted into the bottom of the square groove 8... Afterwards, the elastic element 92 resets (elastic force 5-8N), pushing the buckle block 93 outwards, and the buckle protrusion 96 engages with the bottom of the positioning groove. At this time, the outer side of the buckle block 93 fits against the inner wall of the square groove 8, completing the fixation of the long side panel 5 and the lower base plate 1. At the same end of the two long side panels 5, the insertion pins 6 at both ends of the side panel 4 are horizontally inserted into the insertion grooves 7 of the long side panel 5 (interference fit to ensure no looseness). Repeat the operation to fix the other side panel 4, forming a closed rectangular frame. Align the square groove 8 of the upper base plate 1 with the connecting structure 9 at the upper end of the long side panel 5 to complete the assembly of a single turnover box (items to be transported can be placed inside).

[0029] Assembly of the extended modular turnover box: Take two assembled individual turnover boxes (e.g., 600mm in length), remove the base plate 1 from the side of one turnover box closest to the other, exposing the connecting structure 9 at the end of the long side panel 5. Place the connecting frame 10 horizontally between the two turnover boxes, aligning the square groove 8 on one side of the connecting frame 10 with the connecting structure 9 at the end of the long side panel 5 of the first turnover box. Fix it according to the assembly steps of the individual turnover boxes. Align the connecting structure 9 at the end of the long side panel 5 of the second turnover box closest to the connecting frame 10 with the square groove 8 on the other side of the connecting frame 10. Repeat the fixing operation to form an extended turnover box with a length of 1200mm, suitable for transporting longer items.

[0030] Disassembly and Storage: When disassembling a single turnover box, first pull the ring 97 of the connecting structure 9 corresponding to the upper base plate 1. The pull rod 94 moves horizontally, causing the buckle blocks 93 on both sides to retract inward (the elastic element 92 is compressed). The buckle blocks 93 and the magnetic rod 95 are attracted (the attraction force is 10N to ensure stable retraction). At this time, the upper base plate 1 can be pulled out upward, and the side panel 4 can be pulled out horizontally to separate the insertion post 6 from the insertion slot 7 (the interference fit can be overcome by manpower). Disassemble the connection between the long panel 5 and the lower base plate 1. The disassembled parts (base plate 1, long panel 5, side panel 4, etc.) can be stacked and stored (the stacking height is only 1 / 3 of the height of a single turnover box), which greatly reduces storage space.

Claims

1. A combined turnover box, comprising a horizontally arranged base plate (1), vertically distributed side plates (4) and long plates (5), and a connecting frame (10) for splicing lengthening, characterized in that: The side panel (4) is vertically fixed with cylindrical plug-in posts (6) at both ends along the length direction. The long panel (5) is provided with plug-in slots (7) at both ends along the length direction that are adapted to the plug-in posts (6). The plug-in posts (6) can be inserted into the plug-in slots (7) in the horizontal direction to realize the detachable connection between the side panel (4) and the long panel (5). The four corners of the outer surface of the base plate (1) and the connecting frame (10) are recessed with T-shaped square grooves (8). The upper and lower ends of the long panel (5) are respectively provided with two sets of connecting structures (9) in the vertical direction. The connecting structures (9) can be inserted into the square grooves (8) in the vertical direction and fixed by snap-fit. The connection structure (9) includes a T-shaped seat (91). One end of the T-shaped seat (91) is fixed to the side of the long plate (5) by bolts. On both sides of the T-shaped seat (91) along the horizontal direction, there is an elastic element (92) and a buckle block (93). One end of the elastic element (92) is fixed to the side of the T-shaped seat (91), and the other end is fixed to the inner side of the buckle block (93). In the natural state, the buckle block (93) extends outward under the thrust of the elastic element (92).

2. A combination tote according to claim 1, wherein: The outer end of the buckle block (93) is lower than the inner end, forming a wedge-shaped structure. The outer end edge is rounded. The connecting structure (9) is inserted into the square groove (8). The arc-shaped edge of the buckle block (93) can slide in contact with the inner wall of the square groove (8) and shrink inward under the action of the squeezing force.

3. A combination tote according to claim 2, wherein: Two cylindrical magnetic rods (95) are vertically fixed to the two sides of the T-shaped seat (91). The elastic element (92) is a spiral spring sleeved around the magnetic rods (95). A pull rod (94) slides through the center of the T-shaped seat (91) in the horizontal direction. One end of the pull rod (94) passes through the central hole of one side of the magnetic rod (95) and is fixed to the inner side of the buckle block (93). The other end passes through the central hole of the other side of the magnetic rod (95) and the central hole of the buckle block (93) in sequence, and extends to the outer side of the buckle block (93). A ring (97) is sleeved on the outer surface of the extended end. The ring (97) can drive the pull rod (94) to move in the horizontal direction, thereby simultaneously pulling the buckle blocks (93) on both sides to retract inward.

4. A modular turnover box according to claim 3, characterized in that: The outer end of the buckle block (93) has a buckle protrusion (96) protruding in the vertical direction, and the buckle protrusion (96) is integrally formed with the buckle block (93).

5. A combination tote according to claim 4, wherein: The bottom of the inner wall of the square groove (8) is provided with a positioning groove that matches the snap-fit ​​protrusion (96) in the vertical direction. The side wall of the square groove (8) away from the long surrounding plate (5) is provided with a through hole for the pull rod (94) to pass through. When the connecting structure (9) is assembled with the square groove (8), the snap-fit ​​protrusion (96) can slide vertically along the positioning groove to guide the movement direction of the snap-fit ​​block (93). After the pull rod (94) passes through the through hole, the ring (97) can control the snap-fit ​​block (93) and the magnetic suction rod (95) to be attracted or separated, so as to realize the snap-fit ​​or separation of the connecting structure (9) and the square groove (8).

6. A combination tote according to claim 5, wherein: The upper surfaces of the base plate (1) and the connecting frame (10) are vertically protruded with alignment protrusions (2) on both sides of each square groove (8). The spacing between the two alignment protrusions (2) is adapted to the thickness of the long surrounding plate (5). When the long surrounding plate (5) is installed, its two sides can fit against the sides of the alignment protrusions (2) to quickly align the position of the connecting structure (9) and the square groove (8).

7. A combination tote according to claim 6, wherein: An arc-shaped handle (3) is fixed to the middle of the outer side of the side panel (4). The two ends of the handle (3) are fixed to the outer surface of the side panel (4) to form a space for hand gripping.

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