A paperboard packaging box having a deformation-preventing reinforcing structure

Abstract

This utility model discloses a cardboard packaging box with an anti-deformation reinforcement structure, belonging to the field of packaging technology. The key technical features include a box body, a box lid on the top, an anti-deformation reinforcement component inside the box body, and a bottom support structure at the bottom of the box body. The anti-deformation reinforcement component includes L-shaped corner rods adhered to the four corners of the bottom side inside the box body. By setting the anti-deformation reinforcement component, the L-shaped corner rods at the four corners of the bottom side inside the box body can specifically reinforce weak corners, effectively resisting collision impacts to reduce breakage and deformation. The cross-shaped reinforcement strips between adjacent L-shaped corner rods can enhance the sidewall's resistance to lateral impacts and prevent sidewall indentation. The internal reinforcement structure, together with the top reinforcement frame, forms a coordinated internal and external reinforcement system, improving overall sealing and compression resistance, and solving the problems of easily damaged corners, insufficient internal reinforcement, and lack of a coordinated internal and external anti-deformation system in traditional boxes.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and in particular to a cardboard packaging box with a deformation-resistant and reinforced structure. Background Technology

[0002] Cardboard boxes are widely used in the logistics packaging field due to their advantages such as light weight, low cost and recyclability. However, due to the characteristics of their own material, their structural strength is obviously insufficient. During transportation, they are easily deformed by stacking pressure, collision impact or compression by heavy objects, which can lead to damage to the contents. This problem is particularly prominent when carrying heavy or fragile items.

[0003] The structural defects of existing traditional cardboard packaging boxes further exacerbate the above problems. The four corners of the box are naturally weak areas, which are easily damaged and deformed when subjected to external impact or compression, directly affecting the overall sealing and support stability. The inner side of the box lacks a systematic reinforcement design and relies solely on the strength of the cardboard itself, which is insufficient to resist the lateral impact force generated by the shaking of the internal items, causing the side walls to easily dent inward. The bottom support structure is simple, mostly a single layer of cardboard, which is prone to collapse due to uneven stress when carrying heavy objects or stacking for transportation, resulting in a serious lack of load-bearing capacity. The connection between the box body and the lid is not specifically reinforced, and the lid is prone to deformation when the top is pressed. At the same time, the inner lining and the outer structure lack coordinated design, failing to form an "internal and external linkage" anti-deformation system, which greatly reduces the overall pressure resistance and impact resistance.

[0004] Therefore, a cardboard packaging box with a deformation-resistant and reinforced structure is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a cardboard packaging box with an anti-deformation and reinforced structure, which can solve the problem that the structural defects of existing traditional cardboard packaging boxes further aggravate the above-mentioned problems. The four corners of the box are naturally weak areas, which are easily damaged and deformed when subjected to external impact or compression, directly affecting the overall sealing and support stability. The inner side of the box lacks a systematic reinforcement design and relies solely on the strength of the cardboard itself, which is difficult to resist the lateral impact force generated by the shaking of the internal items, causing the side walls to easily dent inward. The bottom support structure is simple, mostly a single layer of cardboard, which is prone to collapse due to uneven stress when carrying heavy objects or stacking for transportation, resulting in a serious lack of load-bearing capacity. The connection between the box body and the lid is not specifically reinforced, and the lid is prone to deformation when the top is pressed. At the same time, the inner lining and the outer structure of the box lack coordinated design, and cannot form an "internal and external linkage" anti-deformation system, which greatly reduces the overall pressure resistance and impact resistance.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cardboard packaging box with an anti-deformation and reinforced structure, comprising a box body, a box cover provided on the top of the box body, an anti-deformation and reinforced component provided inside the box body, and a bottom support structure provided at the bottom of the box body;

[0007] The anti-deformation reinforcement component includes L-shaped corner bars bonded to the four corners of the bottom inside the box, and cross-shaped reinforcement strips fixedly connected between adjacent L-shaped corner bars. An internal anti-reinforcement structure is provided on the inner side of the cross-shaped reinforcement strips and the L-shaped corner bars. The internal anti-reinforcement structure is located inside the box. A top sealing reinforcement frame is bonded to the top of the L-shaped corner bars, and the top of the top sealing reinforcement frame contacts the bottom of the box cover.

[0008] Preferably, the internal reinforcement structure includes an inner lining plate disposed on the bottom side inside the box, and the corners of the inner lining plate are fixedly connected to the inside of the L-shaped corner rod.

[0009] Preferably, a side connecting layer is fixedly connected to the outer side of the top of the inner substrate, and the corner of the side connecting layer is fixedly connected to the inside of the L-shaped corner bar. The side connecting layer is located inside the cross reinforcing strip.

[0010] Preferably, a honeycomb-shaped compression-resistant layer is bonded to the inner side of the side connecting layer, and kraft paper is bonded to the inside of the honeycomb-shaped compression-resistant layer.

[0011] Preferably, the bottom support structure includes a support plate adhered to the bottom of the box, and a reinforcing support frame is fixedly connected to the periphery of the bottom of the support plate.

[0012] Preferably, a cross-shaped bottom support rod is fixedly connected to the inner side of the reinforced support frame, and the top of the cross-shaped bottom support rod contacts the bottom of the support plate.

[0013] Preferably, corner protectors are glued to the four corners of the outer side of the box. The corner protectors are made of thin, hard plastic. The top of the corner protector contacts the bottom of the box lid, and the bottom of the corner protector contacts the top of the support plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This application sets up anti-deformation reinforcement components. The L-shaped corner bars at the four corners of the bottom inside the box can specifically strengthen weak corners and edges, effectively resisting collision impacts to reduce breakage and deformation. The cross reinforcement strip between adjacent L-shaped corner bars can enhance the side wall's resistance to lateral impacts and prevent the side wall from sinking inward. The internal reinforcement structure and the top reinforcement frame work together to form a reinforcement system that works synergistically inside and outside. This not only improves the overall sealing and compression resistance, but also solves the problems of easy damage at the four corners of traditional boxes, insufficient internal reinforcement, and lack of an internal and external linkage anti-deformation system.

[0016] 2. By setting up a bottom support structure, this application can enhance the load-bearing capacity of the bottom of the box, avoid collapse due to uneven force when carrying heavy objects or stacking and transporting them, and make up for the shortcomings of traditional bottom supports that are simple and have insufficient load-bearing capacity. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of the cardboard packaging box with anti-deformation and reinforced structure according to this utility model;

[0018] Figure 2 This is a structural diagram of the housing of this utility model;

[0019] Figure 3 This is a structural diagram of the anti-deformation reinforcement component of this utility model;

[0020] Figure 4 This is a structural diagram of the internal reinforcement structure of this utility model;

[0021] Figure 5 This is a structural diagram of the base support structure of this utility model.

[0022] In the diagram, 1. Box body; 2. Box cover; 3. Anti-deformation reinforcement component; 31. L-shaped corner bar; 32. Cross reinforcement strip; 33. Internal reinforcement structure; 331. Inner lining board; 332. Side connection layer; 333. Honeycomb anti-compression layer; 334. Kraft paper; 34. Top reinforcement frame; 4. Bottom support structure; 41. Support plate; 42. Reinforced support frame; 43. Cross bottom support rod; 5. Corner sleeve. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-5 The present invention provides the following technical solution:

[0025] A cardboard packaging box with a deformation-resistant and reinforced structure includes a box body 1, a box cover 2 on the top of the box body 1, a deformation-resistant and reinforced component 3 inside the box body 1, and a bottom support structure 4 at the bottom of the box body 1.

[0026] The anti-deformation reinforcement component 3 includes L-shaped corner bars 31 bonded to the four corners of the bottom inside the box 1. A cross-shaped reinforcement strip 32 is fixedly connected between adjacent L-shaped corner bars 31. An internal reinforcement structure 33 is provided on the inner side of the cross-shaped reinforcement strip 32 and the L-shaped corner bars 31. The internal reinforcement structure 33 is located inside the box 1. A top sealing reinforcement frame 34 is bonded to the top of the L-shaped corner bars 31. The top of the top sealing reinforcement frame 34 contacts the bottom of the box cover 2.

[0027] In this embodiment: a multi-layered anti-deformation system is formed by setting up a box body 1, a box cover 2, an anti-deformation reinforcement component 3, and a bottom support structure 4. The L-shaped corner bars 31 at the four corners of the bottom inside the box body 1 directly serve as basic supports, reinforcing vulnerable parts from the corners and reducing damage during collisions. The cross-shaped reinforcement strips 32 between adjacent L-shaped corner bars 31 are connected laterally and longitudinally to form a stable planar support frame, enhancing the resistance of the side wall of the box body 1 to the lateral impact force generated by the shaking of internal items, preventing the side wall from collapsing. The internal anti-deformation reinforcement structure 33 fits into the cross-shaped reinforcement strips 3. 2. The inner side of the L-shaped corner bar 31 further strengthens the overall system integrity and disperses local stress. The top sealing reinforcement frame 34 of the L-shaped corner bar 31 contacts the bottom of the box cover 2, directly bearing the top pressure, improving the stability of the connection between the box cover 2 and the box body 1, and preventing the deformation of the box cover 2 under pressure from being transmitted to the inside of the box body 1. At the same time, the bottom support structure 4 provides solid support for the entire box body 1, dispersing the pressure of heavy objects. With the overall reinforcement design, it effectively resists external pressure and impact during transportation and stacking, reduces the risk of overall deformation, and ensures the safety of the internal items.

[0028] Specifically, such as Figure 4 As shown, the internal reinforcement structure 33 includes an inner substrate 331 disposed on the bottom side inside the housing 1, and the corners of the inner substrate 331 are fixedly connected to the inside of the L-shaped corner rod 31.

[0029] Specifically, such as Figure 4 As shown, a side connecting layer 332 is fixedly connected to the outer side of the top of the inner substrate 331. The corner of the side connecting layer 332 is fixedly connected to the inside of the L-shaped corner bar 31. The side connecting layer 332 is located inside the cross reinforcing strip 32.

[0030] Specifically, such as Figure 4 As shown, a honeycomb-shaped compression-resistant layer 333 is bonded to the inner side of the side connecting layer 332, and kraft paper 334 is bonded to the inside of the honeycomb-shaped compression-resistant layer 333.

[0031] In this embodiment: by setting an internal reinforcement structure 33, the inner substrate 331 serves as the base layer, and its corners are fixed to the L-shaped corner bar 31 to form a bottom support base. The side connection layer 332 on the top outer side is fixed to the inner side of the L-shaped corner bar 31 and is located inside the cross reinforcement strip 32, which strengthens the connection between the inner side and the reinforcement components. The honeycomb anti-compression layer 333 inside the side connection layer 332, together with the inner kraft paper 334, uses the honeycomb structure to disperse pressure and the kraft paper 334 to enhance toughness, further improving the box 1's resistance to compression and impact from the inside, and forming a synergistic protection with the external reinforcement components.

[0032] Specifically, such as Figure 5 As shown, the bottom support structure 4 includes a support plate 41 bonded to the bottom of the box body 1, and a reinforcing support frame 42 is fixedly connected to the outer periphery of the bottom of the support plate 41.

[0033] Specifically, such as Figure 5 As shown, a cross-shaped bottom support rod 43 is fixedly connected to the inner side of the reinforced support frame 42, and the top of the cross-shaped bottom support rod 43 contacts the bottom of the support plate 41.

[0034] In this embodiment: by setting the bottom support structure 4, the support plate 41 at the bottom of the box 1 directly bears the weight, and the reinforced support frame 42 on the bottom periphery forms the outer support, enhancing the bottom edge's resistance to deformation. The cross bottom support rod 43 on the inner side of the reinforced support frame 42 contacts the bottom of the support plate 41, distributing the weight to multiple support points, avoiding excessive local stress that could lead to collapse, and significantly improving the overall load-bearing and bending resistance of the bottom.

[0035] Specifically, such as Figure 1 , Figure 2 As shown, corner protectors 5 are glued to the four corners of the outer side of the box 1. The corner protectors 5 are made of thin and hard plastic. The top of the corner protector 5 contacts the bottom of the box cover 2, and the bottom of the corner protector 5 contacts the top of the support plate 41.

[0036] In this embodiment: by setting corner protectors 5, the thin and hard plastic corner protectors 5 wrap around the four outer corners of the box body 1, with the top contacting the bottom of the box cover 2 and the bottom contacting the top of the support plate 41, forming corner protection that runs through the top and bottom of the box body 1. This not only strengthens the most vulnerable four-corner structure and resists collision impact, but also reduces the deformation transmission at the connection between the box cover 2 and the box body 1, thus balancing protection and lightweight.

[0037] Working Principle: When using a cardboard box with an anti-deformation reinforcement structure, the items are first placed inside the box 1. The inner lining board 331 in the internal reinforcement structure 33 serves as the bottom base, with its corners fixed to L-shaped corner bars, providing stable support for the internal items. The side connecting layer 332 is connected to the inner side of the L-shaped corner bars and located inside the cross reinforcement strip 32, further strengthening the connection between the inner side and the anti-deformation reinforcement component 3. The honeycomb-shaped anti-compression layer 333 inside the side connecting layer 332, together with the inner kraft paper 334, uses the honeycomb structure to disperse the pressure of the items on the side walls. The kraft paper 334 enhances the overall toughness, improving the resistance to compression and impact from the inside. The L-shaped corner bars at the four corners of the bottom inside the box 1 reinforce the structure from the corners, reducing damage caused by collisions during handling. The cross reinforcement strip 32 between adjacent L-shaped corner bars are connected laterally and longitudinally, forming a stable planar support frame, effectively resisting the lateral impact force generated by the shaking of the internal items and preventing the side walls from collapsing. The top reinforcement frame 34 of the box body contacts the bottom of the lid 2, directly bearing the top pressure after the lid 2 is closed, improving the stability of the connection between the lid 2 and the box body 1, and preventing the deformation of the lid 2 under pressure from being transmitted to the inside of the box body 1. The support plate 41 at the bottom of the box body 1 directly bears the overall weight, and the reinforcement support frame 42 on the outer perimeter of its bottom enhances the deformation resistance of the bottom edge. The cross bottom support rod 43 on the inner side distributes the weight to multiple support points, preventing excessive local stress from causing collapse, and greatly improving the bottom load-bearing and bending resistance. At the same time, the thin and hard plastic corner protectors 5 on the four corners of the outer side of the box body 1 wrap around the four corners, with the top contacting the bottom of the lid 2 and the bottom contacting the top of the support plate 41, forming a corner protection that runs through the top and bottom. This not only resists external collision impacts, but also reduces the deformation transmission at the connection between the lid 2 and the box body 1. Throughout the process, the various components work together to form a multi-layered anti-deformation system, effectively resisting external pressure and impacts during transportation and stacking, reducing the risk of overall deformation, and ensuring the safety of the contents.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cardboard packaging box with a deformation-resistant and reinforced structure, comprising a box body (1), characterized in that: The top of the box (1) is provided with a box cover (2), the inside of the box (1) is provided with an anti-deformation reinforcement component (3), and the bottom of the box (1) is provided with a bottom support structure (4). The anti-deformation reinforcement component (3) includes L-shaped corner bars (31) bonded to the four corners of the bottom inside the box (1), and cross reinforcement strips (32) fixedly connected between adjacent L-shaped corner bars (31). An internal anti-reinforcement structure (33) is provided on the inner side of the cross reinforcement strips (32) and the L-shaped corner bars (31). The internal anti-reinforcement structure (33) is located inside the box (1). A top sealing reinforcement frame (34) is bonded to the top of the L-shaped corner bars (31). The top of the top sealing reinforcement frame (34) contacts the bottom of the box cover (2).

2. A cardboard packaging box with an anti-deformation and reinforced structure according to claim 1, characterized in that: The internal reinforcement structure (33) includes an inner substrate plate (331) disposed on the bottom side inside the box (1), and the corners of the inner substrate plate (331) are fixedly connected to the inside of the L-shaped corner rod (31).

3. A cardboard packaging box with an anti-deformation and reinforced structure according to claim 2, characterized in that: A side connection layer (332) is fixedly connected to the outer side of the top of the inner substrate (331). The corner of the side connection layer (332) is fixedly connected to the inside of the L-shaped corner bar (31). The side connection layer (332) is located inside the cross reinforcing strip (32).

4. A cardboard packaging box with an anti-deformation and reinforced structure according to claim 3, characterized in that: A honeycomb-shaped compression-resistant layer (333) is bonded to the inner side of the side connecting layer (332), and kraft paper (334) is bonded to the inside of the honeycomb-shaped compression-resistant layer (333).

5. A cardboard packaging box with an anti-deformation reinforcement structure according to claim 1, characterized in that: The bottom support structure (4) includes a support plate (41) bonded to the bottom of the box (1), and a reinforcing support frame (42) is fixedly connected to the periphery of the bottom of the support plate (41).

6. A cardboard packaging box with an anti-deformation and reinforced structure according to claim 5, characterized in that: The inner side of the reinforced support frame (42) is fixedly connected with a cross bottom support rod (43), and the top of the cross bottom support rod (43) is in contact with the bottom of the support plate (41).

7. A cardboard packaging box with an anti-deformation and reinforced structure according to claim 5, characterized in that: The four corners of the outer side of the box (1) are all glued with corner protectors (5). The corner protectors (5) are made of thin and hard plastic. The top of the corner protector (5) contacts the bottom of the box cover (2), and the bottom of the corner protector (5) contacts the top of the support plate (41).

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