Inner support structure for a carton

Abstract

The utility model discloses inner support structure of packing carton, including protection paper box, and the inside of protection paper box is equipped with internal buffering protection subassembly, and the inside of protection paper box is provided with and places the cavity, and the four side inner walls of protection paper box are detachably connected with spliced support subassembly, and spliced support subassembly includes the plug -in bottom pole of setting in the inner wall bottom end of protection paper box, and the edge support arc plate of being connected on the plug -in bottom pole. The utility model has the advantages of detachable support protection, and the stability of packing carton support is improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of internal support structure technology, specifically to the internal support structure of packaging cartons. Background Technology

[0002] The internal support structure of a packaging carton is a functional structural component installed inside the carton to enhance the stability of the carton, buffer external impacts, and secure the contents. Its core function is to solve the problems of cartons being "easily deformed, poorly protected, and prone to shaking," thus ensuring the safety of products during warehousing and transportation.

[0003] Traditional supports are mostly adhesive corrugated partitions or one-piece molded foam, which are basically assembled once. During assembly, they need to be fixed with glue or manually inserted one by one. During disassembly, they are easily damaged due to structural adhesion or brittleness. If support nodes need to be added temporarily, support components cannot be added separately. Once disassembled, the foam is easy to break and the adhesive partitions are easy to tear, making it impossible to reassemble and use. Utility Model Content

[0004] The purpose of this invention is to provide an internal support structure for packaging cartons, which has the advantage of detachable support and protection, and solves the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: The internal support structure of the packaging carton includes a protective carton body, an internal cushioning and protection component inside the protective carton body, a placement cavity inside the protective carton body, and splicing support components that are detachably connected to the four inner walls of the protective carton body. The splicing support components include an insertable bottom rod at the bottom of the inner wall of the protective carton body and an edge support arc plate that is engaged with the insertable bottom rod.

[0006] Preferably, a plurality of first insertion slots are provided at one end of the outer side of the edge support arc plate, and a first insertion plate is engaged and connected inside the first insertion slot.

[0007] It is worth noting that the first interlocking plate is mainly used to connect the edge support arc plate and the first support horizontal plate to form a horizontal support link, which transfers the force on the side wall to the internal support frame and avoids local overload. However, it should be noted that the thickness of the material of the first interlocking plate must be suitable for the force requirements. If it is used to bear heavy objects, thickened corrugated paper or honeycomb paperboard should be selected to avoid bending and breaking of the interlocking plate.

[0008] Preferably, a first support plate is fixedly connected to the side end of the first plug-in plate, a first vertical support plate is fixedly connected to the side end of the first support plate, and multiple sets of second plug-in slots are opened on the outer side of the first vertical support plate away from the first support plate.

[0009] It is worth noting that the second insertion slot provides an installation interface for the second insertion plate, continuing the detachable splicing logic to ensure the connection strength between the second insertion plate and the first vertical support plate and avoid lateral displacement; however, it should be noted that multiple sets of the second insertion slot can be opened to achieve multiple levels of adjustment, such as adding or removing the second support horizontal plate according to the product height.

[0010] Preferably, a second plug-in plate is engaged with the inside of the second plug-in slot, and a second support cross plate is fixedly connected to the side end of the second plug-in plate.

[0011] It is worth noting that the second connector plate is used to connect the first vertical support plate and the second horizontal support plate, extending the coverage of the internal support frame, further dispersing the lateral force, and avoiding single-point overload of the first vertical support plate; however, it should be noted that the length of the second connector plate must match the internal span of the carton. If it is too long, it is easy to bend, and if it is too short, it cannot be fully connected.

[0012] Preferably, a second vertical support plate is fixedly connected to the side end of the second support horizontal plate, and multiple sets of third insertion slots are opened inside the second vertical support plate.

[0013] It is worth noting that the second vertical support plate and the first vertical support plate form a double vertical support, which strengthens the longitudinal deformation resistance of the carton and can also serve as the carrier of the third insertion slot, providing an installation base for the first bonding cardboard and improving the three-dimensional skeleton. However, it should be noted that the edges of the third insertion slot need to be rounded to avoid sharp edges scratching operators or tearing the cardboard during disassembly and assembly.

[0014] Preferably, a first fitting plate is engaged with the outside of the third insertion slot, and a positioning slot is provided inside the second vertical support plate that penetrates multiple sets of third insertion slots.

[0015] It is worth noting that the positioning slot provides a through-type installation channel for the locking rod, enabling the second vertical support plate to lock with the first fitting plate, ensuring the coaxiality of multiple sets of third insertion slots, and preventing the locking rod from being unable to be inserted; however, it should be noted that the hole diameter must match the locking rod, otherwise the rod may loosen.

[0016] Preferably, the first fitting plate has a locking slot with the same specifications as the positioning slot inside, and a locking rod is detachably connected inside the positioning slot and the locking slot.

[0017] It is worth noting that the locking rod passes through the positioning slot and the locking slot, locking the second vertical support plate and the first fitting plate into a whole, preventing the splicing structure from loosening, and the detachable design facilitates subsequent disassembly and reuse or structural adjustment; however, it should be noted that the length of the locking rod should be moderate, as it will extend beyond the structure if it is too long, which may scratch the product.

[0018] Preferably, a third support plate is fixedly connected to the side end of the first bonding plate, and a second bonding plate is fixedly connected to the side end of the third support plate.

[0019] It is worth noting that the second bonding plate forms a two-way bonding with the first bonding plate, fixing it from both sides of the product, such as the left and right sides of a cuboid product. This prevents the product from swaying laterally and also helps to disperse the pressure of the product on the supporting structure, preventing excessive local pressure from causing the plate to deform. However, it is important to note that the bonding surface of the second bonding plate must be flat. If the surface is uneven, gaps will be created between it and the product, reducing the fixing effect. Therefore, the flatness of the cardboard must be controlled during production.

[0020] Preferably, the internal cushioning and protection assembly includes a cushioning cavity opened inside the protective carton, multiple sets of arc-shaped cushioning strips disposed inside the cushioning cavity, and a top support frame plate fixedly installed on the upper end of the arc-shaped cushioning strips.

[0021] It is worth noting that the curved buffer strip absorbs impact energy through curved deformation. When impacted, it unfolds in an arc shape, converting kinetic energy into deformation energy, reducing the force transmitted to the product, and can also support the top support frame to prevent the top from collapsing under pressure. However, it is important to note that the material of the curved buffer strip must be high-toughness cardboard, such as kraft paper or thickened corrugated paper, to prevent it from breaking during impact and losing its buffering effect.

[0022] Preferably, the bottom of the protective cardboard box is provided with multiple sets of pressure-bearing bars, the side ends of the pressure-bearing bars are fixedly connected to load-bearing support bars, the side ends of the load-bearing support bars are fixedly connected to connecting support plates, and the lower ends of the pressure-bearing bars are fixedly connected to anti-slip bottom plates.

[0023] It is worth noting that the connecting support plate connects the load-bearing support strip to the protective cardboard box, transferring the bottom force to the side wall of the box, preventing the bottom from detaching from the side wall, and also strengthening the connection between the bottom and the side wall to prevent the bottom from falling off during handling; however, it is important to ensure that the connecting support plate is tightly connected to the load-bearing support strip and the protective cardboard box to avoid any loose gaps that could affect the transmission of force.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes an internal buffer protection component that can absorb external impacts, such as vibrations and collisions during transportation, by its own buffering performance. This reduces the direct impact of external forces on the items placed inside the cavity, preventing damage to the items due to impact. It enhances the packaging's ability to protect fragile and delicate items, reduces the breakage rate of items during storage and transportation, and ensures that items arrive at their destination intact. The splicing support component allows for easy adjustment of the support structure according to items of different sizes and shapes, enhancing the strength and stability of the inner walls of the four sides of the protective cardboard box and preventing the box from deforming due to stress. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention. Figure 2This is a three-dimensional disassembled structural diagram of the edge-supporting arc-shaped plate of this utility model; Figure 3 This is a three-dimensional disassembled structural diagram of the second vertical support plate of this utility model; Figure 4 This is a three-dimensional disassembled structural diagram of the protective cardboard box of this utility model; Figure 5 This is a three-dimensional disassembled structural diagram of the anti-slip base plate of this utility model.

[0026] Reference numerals: 1. Protective cardboard box body; 3. Placement cavity; 5. Pressure-bearing rod; 6. Load-bearing support strip; 7. Connecting support plate; 8. Anti-slip bottom plate; 101. Buffer cavity; 102. Arc-shaped buffer strip; 103. Top support frame plate; 401. Insertion bottom rod; 402. Edge support arc-shaped plate; 403. First insertion slot; 404. First insertion plate; 405. First support horizontal plate; 406. Second insertion slot; 407. Second insertion plate; 408. Second support horizontal plate; 409. First vertical support plate; 410. Second vertical support plate; 411. Third insertion slot; 412. First fitting plate; 413. Positioning slot; 414. Locking slot; 415. Locking rod; 416. Third support horizontal plate; 417. Second fitting plate. Detailed Implementation

[0027] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0028] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0029] Example 1; as Figures 1-4As shown, the package includes a protective cardboard box 1, made of 2.5mm thick three-layer A-flute corrugated cardboard. A-flute corrugated cardboard provides excellent cushioning and load-bearing capacity, serving as the basic framework of the overall structure. The paper material is also recyclable, meeting environmental protection requirements. The protective cardboard box 1 has internal cushioning and protection components. An internal cavity 3 is provided within the protective cardboard box 1, the size of which is customized according to the specifications of the items to be packaged, providing dedicated space for the items and preventing them from shifting around inside the box. The four inner walls of the protective cardboard box 1 are detachably connected to… The system includes a splicing support assembly, which consists of an insertable bottom rod 401 located at the bottom of the inner wall of the protective cardboard box 1, and an edge support arc plate 402 that is snapped onto the insertable bottom rod 401. Both the insertable bottom rod 401 and the edge support arc plate 402 are made of 2mm thick three-layer corrugated cardboard. The curvature of the edge support arc plate 402 is adapted to the curvature of the inner wall of the protective cardboard box 1, and the radius of curvature is 1-2mm larger than the radius of the box wall to ensure a tight fit to the box, strengthen the impact resistance of the four corners and side walls, and reduce the deformation of the box when subjected to external pressure or impact.

[0030] Multiple sets of first insertion slots 403 are provided on one side of the outer edge support arc plate 402. First insertion plates 404 are engaged and connected inside the first insertion slots 403. The first insertion plates 404 are made of 1.5mm thick five-layer corrugated cardboard. If the load exceeds 5kg, they are upgraded to 2mm thick five-layer corrugated cardboard to prevent bending and breakage under stress. Their main function is to connect the edge support arc plate 402 and the first support horizontal plate 405, forming a lateral support link to transfer the side wall stress to the internal support frame. The first support horizontal plate 405 is fixedly connected to the side end of the first insertion plate 404, and a first vertical support plate 409 is fixedly connected to the side end of the first support horizontal plate 405. The outer side of the first vertical support plate 409... Multiple sets of second insertion slots 406 are provided at the end away from the first supporting horizontal plate 405. Both the first supporting horizontal plate 405 and the first vertical supporting plate 409 are made of 2mm thick three-layer corrugated cardboard. The spacing between the first supporting horizontal plates 405 is 2-5mm larger than the width of the items to be packaged, leaving buffer space to prevent collisions. The first vertical supporting plate 409 can vertically divide the space, forming a three-dimensional grid with the first supporting horizontal plate 405 to fix the vertical position of the items. A second insertion plate 407 is engaged and connected inside the second insertion slot 406. A second supporting horizontal plate 408 is fixedly connected to the side of the second insertion plate 407. The second insertion plate 407 and the second supporting horizontal plate 408 are made of the same material as the first insertion plate 404 and the first supporting horizontal plate 408. The length of the second interlocking plate 407 is 1-2mm shorter than the internal span of the protective cardboard box 1 to avoid overly tight or loose assembly. The second support horizontal plate 408 can form a double-layer lateral support with the first support horizontal plate 405 to strengthen the load-bearing capacity of the middle area. The second support horizontal plate 408 is fixedly connected to the side of the second vertical support plate 408. The second vertical support plate 410 has multiple sets of third interlocking slots 411 inside. The second vertical support plate 410 is made of 2mm thick three-layer corrugated cardboard. The edges of the third interlocking slots 411 are rounded with a radius of 1mm to prevent scratching operators or tearing of the cardboard during disassembly and assembly. The second vertical support plate 410 and the first vertical support plate 409 form a double vertical support. To enhance the longitudinal deformation resistance of the carton; the third insertion slot 411 is engaged with the first fitting plate 412 on the outside; the second vertical support plate 410 has a positioning slot 413 that penetrates multiple sets of the third insertion slots 411 inside; the first fitting plate 412 is made of 1.5mm thick kraft paper with a textured surface for anti-slip, increasing friction with the items; the diameter of the positioning slot 413 is 0.3-0.5mm larger than the diameter of the subsequent locking rod 415 to ensure smooth insertion of the rod; the first fitting plate 412 has a locking slot 414 with the same specifications as the positioning slot 413 inside; the positioning slot 413 and the locking slot 414 are detachably connected to a locking rod 415, which is 1.Made of 2mm thick kraft paper, its length is 5-10mm longer than the total thickness of the positioning slot 413 and locking slot 414. This allows it to lock the second vertical support plate 410 and the first bonding plate 412 into a single unit, preventing loosening of the splicing structure. A third support horizontal plate 416 is fixedly connected to the side of the first bonding plate 412, and a second bonding plate 417 is fixedly connected to the side of the third support horizontal plate 416. The materials of the third support horizontal plate 416 and the second bonding plate 417 are the same as those of the first support horizontal plate 405 and the first bonding plate 412, respectively. The flatness error of the bonding surface of the second bonding plate 417 is ≤0.2mm to avoid gaps with the item. It forms a bidirectional bond with the first bonding plate 412, securing the item from both sides and preventing lateral movement.

[0031] The internal cushioning and protection components include a cushioning cavity 101 inside the protective cardboard box 1, multiple sets of arc-shaped cushioning strips 102 set inside the cushioning cavity 101, and a top support frame plate 103 fixedly installed on the upper end of the arc-shaped cushioning strips 102. The thickness of the cushioning cavity 101 is designed to be 5-10mm to form an air cushioning layer. The arc-shaped cushioning strips 102 are made of 1.8mm thick kraft paper folded into shape. Kraft paper has strong toughness and can absorb impact energy through arc deformation. The top support frame plate 103 is made of 2mm thick five-layer corrugated cardboard to enhance the top load-bearing capacity and prevent the top from collapsing under pressure.

[0032] During the process, the protective cardboard box 1 is first unfolded and folded into shape, ensuring that the edges and corners of the box are tightly joined without any obvious gaps. Then, the insert base rod 401 from the splicing support assembly is installed along the preset groove at the bottom of the inner wall of the protective cardboard box 1, ensuring that the insert base rod 401 is symmetrically positioned and tightly fitted to the box, providing a stable foundation for the subsequent support structure. Next, the edge support arc plate 402 is aligned with the locking position of the insert base rod 401, and slowly pressed down to lock them in place. The arc structure of the edge support arc plate 402 distributes the force on the four corners and side walls of the box, reducing deformation caused by external pressure or impact. Then, the first insert plate is removed. 404. Align one end of the first end with the first insertion slot 403 on the edge support arc plate 402, and gently push it in until it is fully engaged. The edge support arc plate 402 and the first support horizontal plate 405 are connected by the first insertion plate 404 to form a horizontal support link, which transfers the force on the side wall to the internal support frame and avoids local overload. Then, align the fixed ends of the first vertical support plate 409 and the first support horizontal plate 405, and fix them with environmentally friendly cornstarch glue. The first vertical support plate 409 and the first support horizontal plate 405 together form the basic unit of the three-dimensional grid, which longitudinally divides the internal space of the box and prevents the items from bouncing and shifting.

[0033] Then, the second insertion plate 407 is inserted into the second insertion slot 406 of the first vertical support plate 409, connecting the second support horizontal plate 408 to further extend the coverage of the internal support frame and enhance the ability to distribute lateral forces. The second vertical support plate 410 is fixed to the second support horizontal plate 408, forming a double vertical support with the first vertical support plate 409, strengthening the longitudinal deformation resistance of the box and preventing the side walls of the box from bulging due to the pressure of items. The first fitting plate 412 is aligned with the third insertion slot 411 of the second vertical support plate 410. After pushing and engaging, observe whether the positioning slot 413 and the locking slot 414 on the first fitting plate 412 are aligned. After confirming alignment, the locking rod 415 is inserted into the two slots to achieve the connection between the second vertical support plate 410 and the first vertical support plate 409. The locking of the fitting plate 412 prevents the splicing structure from loosening during transportation vibrations. Finally, the third support plate 416 and the second fitting plate 417 are assembled into place, so that the second fitting plate 417 and the first fitting plate 412 are respectively attached to the two sides of the item. The item is fixed by bidirectional clamping to prevent the item from swaying laterally. At the same time, the internal buffer protection components play a role: the air in the buffer cavity 101 forms a natural buffer layer, which, together with the arc-shaped buffer strip 102, deforms in an arc shape when impacted, converting the vibration and collision kinetic energy during transportation into deformation energy, reducing the direct transmission of external force to the item placed in the cavity 3; the top support frame plate 103 evenly distributes the top pressure to the arc-shaped buffer strip 102 to prevent the top from collapsing under pressure, ensuring the safety of the item in all aspects.

[0034] Example 2: Please refer to Figures 1-5Based on Embodiment 1, additional load-bearing rods 5, load-bearing support bars 6, connecting support plates 7, and anti-slip bottom plates 8 are added. Multiple sets of load-bearing rods 5 are provided at the bottom of the protective cardboard box 1. Load-bearing support bars 6 are fixedly connected to the side ends of the load-bearing rods 5, and connecting support plates 7 are fixedly connected to the side ends of the load-bearing support bars 6. Anti-slip bottom plates 8 are fixedly connected to the lower ends of the load-bearing rods 5. The load-bearing rods 5 are hollow rod-shaped structures made of 3mm thick three-layer corrugated cardboard. Each set of load-bearing rods 5 is designed to bear a load of 5-8kg, with the number determined according to the bottom area of ​​the protective cardboard box 1 and the total weight of the contents. Their main function is to bear the main weight of the bottom of the cardboard box, preventing the bottom cardboard from breaking due to excessive pressure. The load-bearing support bars 6 are made of 2.5mm thick three-layer corrugated cardboard, with a width of 20mm, and are... The pressure-bearing rods 5 are vertically and cross-connected, allowing multiple sets of pressure-bearing rods 5 to form a lateral load-bearing link, preventing the pressure-bearing rods 5 from tilting due to independent force. The connecting support plate 7 is made of 2mm thick five-layer corrugated cardboard, with one end connected to the load-bearing support bar 6 by a snap-fit ​​method, and the other end tightly attached to the inner wall of the protective cardboard box 1. This transfers the force from the bottom to the side wall of the box, preventing the bottom from detaching from the side wall and strengthening the connection between the bottom and the side wall. The anti-slip bottom plate 8 is made of 1.8mm thick kraft paper, coated with an organic silicone anti-slip agent with an anti-slip coefficient ≥0.6. It is fixed to the lower end of the pressure-bearing rods 5 with environmentally friendly glue, increasing the friction between the bottom and the contact surface, preventing the cardboard box from sliding during transportation or stacking, and protecting the bottom of the pressure-bearing rods 5 from wear by foreign objects on the ground.

[0035] During operation, in addition to the assembly and protection process described in Example 1, first install the pressure-bearing rods 5, load-bearing support bars 6, connecting support plates 7, and anti-slip bottom plates 8 into place: Distribute the pressure-bearing rods 5 evenly at the bottom of the protective cardboard box 1, and initially fix them to the bottom of the box using environmentally friendly adhesive, ensuring that the positions of the pressure-bearing rods 5 correspond to areas where the weight of the items is concentrated, thus evenly distributing the weight; then, perpendicularly intersect the load-bearing support bars 6 with the pressure-bearing rods 5, align them with the locking positions, and press them in place to form a bottom load-bearing grid, further enhancing the overall load-bearing capacity of the bottom and preventing single-bar damage. The pressure bar 5 tilts or breaks due to independent force. Then, one end of the connecting support plate 7 is engaged with the load-bearing support bar 6, and the other end is attached to the inner wall of the protective cardboard box 1. It is reinforced with a small amount of environmentally friendly glue to ensure that the force at the bottom can be smoothly transmitted to the side wall and to prevent the bottom from separating from the side wall during handling. Finally, the anti-slip bottom plate 8 is aligned with the lower end of the pressure bar 5 and fixed with environmentally friendly glue to complete the installation of the bottom reinforcement component. At this time, the anti-slip bottom plate 8 can effectively increase the friction between the cardboard box and the contact surface of the pallet, the ground and other surfaces, and prevent the cardboard box from sliding and causing the items to collide during transportation.

[0036] During the placement and transportation of goods, the bottom reinforcement components continue to play a role: the pressure-bearing rod 5 directly bears the weight of the goods placed in the cavity 3, evenly distributing the weight to multiple pressure points, preventing the bottom of the protective cardboard box 1 from being damaged due to excessive local pressure, especially when placing heavier items, it can significantly improve the bottom load-bearing capacity; the load-bearing support bar 6 connects multiple sets of pressure-bearing rods 5 to form lateral support, preventing the pressure-bearing rods 5 from tilting to both sides when under force, ensuring the stability of the bottom support structure; the connecting support plate 7 serves as a transition connector between the bottom and the side wall, transferring part of the weight borne by the bottom to the side wall of the protective cardboard box 1, so that the bottom and the side wall share the force together, enhancing the overall structural stability; the anti-slip bottom plate 8 can effectively prevent the cardboard box from sliding when forklift handling or stacking, avoiding problems such as item collisions and support structure displacement caused by sliding, further ensuring the safety of goods during transportation and storage.

[0037] The above working principle can be summarized as follows: The internal support structure of the packaging carton takes the protective carton body 1 as the core frame. Through the detachable interlocking and locking of the bottom rod 401, the edge support arc plate 402, the first interlocking plate 404, the first support horizontal plate 405, the first vertical support plate 409, the second interlocking slot 406, the second interlocking plate 407, the second support horizontal plate 408, the second vertical support plate 410, the third interlocking slot 411, the first fitting plate 412, the positioning slot 413, the locking slot 414, the locking rod 415, the third support horizontal plate 416, and the second fitting plate 417, a three-dimensional grid support system is constructed to achieve flexible fixation of items of different sizes and shapes, while distributing the force on various parts of the carton and preventing the carton from deforming. The air cushioning of the buffer cavity 101 and the deformation cushioning of the arc-shaped buffer strip 102 absorb external impact energy and reduce the risk of damage to items. Together with the top support frame plate 103 to enhance the top load-bearing capacity, it forms an all-round buffer protection of "top-middle-interior". Through the synergistic effect of the pressure rod 5, the load-bearing support strip 6, the connecting support plate 7, and the anti-slip bottom plate 8, the load-bearing capacity and anti-slip capacity of the bottom of the box are enhanced, avoiding bottom damage or sliding, and making up for the defects of traditional bottom support of "weak load-bearing capacity and easy sliding". The entire structure is mainly made of paper materials, with environmentally friendly and recyclable glue used only in some areas. It conforms to the concept of being detachable and reusable, which can reduce packaging costs and reduce environmental pollution. At the same time, the standardized component design improves assembly efficiency, and the support structure can be flexibly adjusted according to the specifications of the items, ensuring that the items are reliably protected throughout the entire process of warehousing and transportation.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

[0039] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. An internal support structure for a packaging carton, comprising a protective carton body (1), characterized in that, The protective cardboard box (1) is equipped with an internal buffer protection component. The protective cardboard box (1) has a placement cavity (3) inside. The protective cardboard box (1) has a splicing support component that can be detachably connected to the four inner walls. The splicing support component includes an insertion bottom rod (401) opened at the bottom of the inner wall of the protective cardboard box (1) and an edge support arc plate (402) that is engaged with the insertion bottom rod (401).

2. The internal support structure of the packaging carton according to claim 1, characterized in that, Multiple sets of first insertion slots (403) are opened at one end of the outer side of the edge support arc plate (402), and a first insertion plate (404) is engaged and connected inside the first insertion slot (403).

3. The internal support structure of the packaging carton according to claim 2, characterized in that, The first plug plate (404) is fixedly connected to the side end of the first support plate (405), and the first support plate (405) is fixedly connected to the side end of the first vertical support plate (409). Multiple sets of second plug slots (406) are opened on the outer side of the first vertical support plate (409) away from the first support plate (405).

4. The internal support structure of the packaging carton according to claim 3, characterized in that, The second insertion slot (406) is internally engaged with a second insertion plate (407), and the side end of the second insertion plate (407) is fixedly connected with a second support cross plate (408).

5. The internal support structure of the packaging carton according to claim 4, characterized in that, The second support plate (408) is fixedly connected to the side end of the second vertical support plate (410), and the second vertical support plate (410) has multiple sets of third insertion slots (411) inside.

6. The internal support structure of the packaging carton according to claim 5, characterized in that, The third insertion slot (411) is engaged with the first fitting plate (412) on the outside, and the second vertical support plate (410) has a positioning slot (413) that penetrates multiple sets of third insertion slots (411) inside.

7. The internal support structure of the packaging carton according to claim 6, characterized in that, The first fitting plate (412) has a locking slot (414) with the same specifications as the positioning slot (413) inside. The positioning slot (413) and the locking slot (414) are detachably connected to a locking rod (415).

8. The internal support structure of the packaging carton according to claim 7, characterized in that, The first bonding plate (412) is fixedly connected to the side end of the third support plate (416), and the third support plate (416) is fixedly connected to the side end of the second bonding plate (417).

9. The internal support structure of the packaging carton according to claim 8, characterized in that, The internal buffer protection assembly includes a buffer cavity (101) opened inside the protective carton body (1), multiple sets of arc-shaped buffer strips (102) arranged inside the buffer cavity (101), and a top support frame plate (103) fixedly installed on the upper end of the arc-shaped buffer strips (102).

10. The internal support structure of the packaging carton according to claim 1, characterized in that, The bottom of the protective cardboard box (1) is provided with multiple sets of pressure-bearing rods (5). The side ends of the pressure-bearing rods (5) are fixedly connected to load-bearing support bars (6). The side ends of the load-bearing support bars (6) are fixedly connected to connecting support plates (7). The lower end of the pressure-bearing rods (5) is fixedly connected to an anti-slip bottom plate (8).

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