A double-layer hollow edge

Abstract

This utility model belongs to the field of packaging product technology, and in particular to a double-layer hollow edge protector. It includes an edge protector body, which is an L-shaped strip-shaped hollow structure formed by inner and outer walls. The surfaces of the inner and outer walls are provided with crisscrossing grooves. The two ends of the edge protector body have interlocking convex and concave splicing structures. This utility model aims to strengthen the wall surface by creating a wavy groove network through the arched deepening of the grooves in the depth direction. Numerous support points are formed at the intersection of the grooves to support the inter-wall reinforcement. This results in a lightweight, high-strength edge protector with excellent cushioning performance, which can completely replace traditional single-wall edge protectors, foam, pearl cotton, and cardboard edge protectors. It solves problems such as the fragility of foam edge protectors, insufficient strength of pearl cotton edge protectors, and lack of cushioning in paper edge protectors. Furthermore, its modular convex and concave splicing structure at both ends breaks through the traditional edge protector length limitations, allowing for extension as needed, making it widely applicable and economical.

Description

Technical Field

[0001] This utility model relates to the field of packaging product technology, specifically to a double-layer hollow edge protector. Background Technology

[0002] Currently, the transport packaging for flat products such as ceramic tiles, floor tiles, slabs, glass, doors and windows, and furniture panels mostly uses single-wall plastic edge protection packaging, or foam edge protection, pearl cotton edge protection, or cardboard edge protection.

[0003] Most of the aforementioned products are very heavy and have sharp edges. Traditional foam edge protectors are not environmentally friendly and are brittle, making them easy to break. Pearl cotton edge protectors have low strength and cannot bear heavy weights. Cardboard edge protectors are heavy and lack cushioning. Single-wall edge protectors do not have a cushioning effect. Because there is no cushioning to reduce the impact force, the impact force is transmitted to the product almost without loss after the collision, and the product is easily damaged by protruding debris. Therefore, the effect of using them is not ideal.

[0004] Therefore, we propose a double-layer hollow edge protection to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a double-layer hollow edge protector, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0009] A double-layer hollow edge protector includes an edge protector body, which is a hollow structure formed by an inner sidewall and an outer sidewall. The surfaces of the inner sidewall and the outer sidewall are provided with crisscrossing grooves, and the two ends of the edge protector body are provided with interlocking splicing structures.

[0010] Furthermore, the edge protector body is a hollow structure integrally formed by blow molding or rotational molding, and its cross-section is L-shaped.

[0011] Furthermore, the groove is composed of multiple arched units connected end to end, forming a wave-shaped structure.

[0012] Furthermore, the grooves on the inner and outer sidewalls are positioned correspondingly, with the grooves being deepest at their intersection points.

[0013] Furthermore, the grooves on the inner and outer sidewalls deepen in an arc shape in the depth direction, and a connection point is formed at the intersection of the grooves. The corresponding connection points of the inner and outer sides join together to form a support point.

[0014] Furthermore, the two outer side walls of the edge protector body intersect and are recessed inward to form a corner reinforcement groove.

[0015] Furthermore, the splicing structure includes a connecting groove at one end of the edge protector body and a connecting block at the other end, and two or more edge protector bodies form a detachable edge protector assembly through the interference fit between the connecting block and the connecting groove.

[0016] Furthermore, multiple edge protector bodies of various lengths are prefabricated, and edge protectors of numerous lengths can be derived by combining them with the interference fit of the connecting blocks and connecting grooves.

[0017] Furthermore, the crisscrossing grooves separate the inner and outer walls to form several buffer units, and the hollow cavities of each buffer unit are interconnected.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, this utility model provides a double-layer hollow edge protector, which has the following beneficial effects:

[0020] This utility model achieves a balance between high strength and excellent cushioning performance by combining an integrally molded L-shaped cross-section edge protector body with a wave-shaped groove network and distributed support connection points. It can completely replace traditional single-wall edge protectors, foam, pearl cotton, and cardboard edge protectors, solving industry problems such as the fragility of foam edge protectors, insufficient strength of pearl cotton, and moisture absorption and deformation of cardboard. It also features lightweight and impact resistance, a modular splicing structure that breaks through the traditional edge protector length limitations, and overall recyclability that meets environmental protection requirements. It has wide applicability and is economical. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the detachable edge guard assembly structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the main structure of the edge protection of this utility model;

[0023] Figure 3 This is a schematic diagram of the top corner reinforcing groove structure of this utility model;

[0024] Figure 4 This is a cross-sectional view of the groove structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the two edge-protecting main bodies of this utility model in a separated state.

[0026] In the diagram: 1. Main body of the edge protector; 11. Inner side wall; 12. Outer side wall; 13. Groove; 131. Arched unit; 132. Connection point; 14. Splicing structure; 141. Connecting groove; 142. Connecting block; 15. Top corner reinforcing groove; 16. Buffer unit; 2. Detachable edge protector assembly. Detailed Implementation

[0027] 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.

[0028] Example

[0029] like Figure 1-5 As shown, an embodiment of this utility model proposes a double-layer hollow edge protector, including an edge protector body 1. The edge protector body 1 is a hollow structure formed by an inner sidewall 11 and an outer sidewall 12. The surfaces of the inner sidewall 11 and the outer sidewall 12 are provided with crisscrossing grooves 13. The two ends of the edge protector body 1 are provided with splicing structures 14 that can be connected to each other. The symmetrical arrangement of the inner sidewall 11 and the outer sidewall 12 forms a double-layer hollow cavity. The crisscrossing grooves 13 form a mesh stress dispersion structure. The splicing structures 14 at both ends realize modular expansion. The double-wall design of the hollow cavity reduces weight, while the network of grooves 13 improves the overall rigidity. The splicing structure 14 breaks through the traditional edge protector length limitation and realizes free combination and installation. Multiple sizes of edge protector bodies 1 can be prefabricated, and detachable edge protector groups 2 of almost all lengths in the application scenario can be obtained through the splicing structure 14.

[0030] This application achieves a balance between high strength and excellent cushioning performance by combining an integrally molded L-shaped cross-section edge protector body 1 with a network of wavy grooves 13 and distributed support connection points 132. It can completely replace traditional single-wall edge protectors, foam, pearl cotton and cardboard edge protectors, and solve industry problems such as the fragility of foam edge protectors, insufficient strength of pearl cotton and moisture absorption and deformation of cardboard. It also has lightweight and impact resistance characteristics. The modular splicing structure 14 breaks through the traditional edge protector length limitation. The overall recyclability meets environmental protection requirements and has wide applicability and economy.

[0031] like Figure 1-5 As shown, in some embodiments, the edge protector body 1 is a hollow structure integrally formed by blow molding or rotational molding, and its cross-section is L-shaped.

[0032] The edge protection body 1 is made of environmentally friendly, tough, and flame-retardant material. The tough material can be plastic. It is made by blow molding or rotational molding in one piece, so that the inner and outer walls of the L-shaped cross-section and the groove 13 are formed at the same time, avoiding stress concentration points caused by welding or bonding. The L-shaped cross-section naturally forms a protective characteristic that covers the edges and corners, which works in conjunction with the hollow structure to enhance the bending resistance.

[0033] like Figure 1-5As shown, in some embodiments, the groove 13 is composed of multiple arched units 131 connected end to end, forming a wave-shaped structure.

[0034] The arched units 131 are continuously spliced ​​to form a wave-shaped groove 13 with a gradually changing curvature in the depth direction. The wave-shaped groove 13 decomposes the impact force into a multi-stage energy dissipation process through the continuous folding and deformation of the arched units 131. The wave-shaped groove 13 structure absorbs more impact energy than the straight groove 13 structure. With the same amount of material, the energy absorption efficiency of the wave-shaped groove 13 structure is greatly improved. The arc transition eliminates right-angle stress concentration and extends fatigue life.

[0035] like Figure 1-5 As shown, in some embodiments, the grooves 13 on the inner wall 11 and the outer wall 12 are positioned correspondingly, and the grooves 13 are deepest at the intersection point.

[0036] Connection point 132 forms a three-dimensional spatial support network to prevent the inner wall 11 and outer wall 12 from collapsing under pressure. The deepest part of the depression forms a material accumulation area, which locally enhances the wall thickness but does not increase the overall weight.

[0037] like Figure 1-5 As shown, in some embodiments, the grooves 13 on the inner wall 11 and the outer wall 12 are deepened in an arc shape in the depth direction, and a connection point 132 is formed at the intersection of the grooves 13. The corresponding inner and outer connection points 132 are joined together to form a support point.

[0038] The grooves 13 of the inner wall 11 and the outer wall 12 are deeply recessed at the intersection point to form an interlocking connection point 132. The grooves 13 connection points 132 between the numerous inner wall 11 and the outer wall 12 are connected to form numerous support points to support the entire inner wall 11 and the outer wall 12, thereby strengthening the wall surface of the inner wall 11 and the outer wall 12. At the connection point 132, the materials of the inner wall 11 and the outer wall 12 are fused together to form distributed micro-pillars. Several micro-pillars jointly bear the load, which greatly reduces the weight compared to traditional reinforcing ribs, and the even distribution of support points avoids the transmission of local deformation.

[0039] like Figure 1-5 As shown, in some embodiments, the two outer side walls 12 of the edge protector body 1 intersect and the edges are recessed inward to form a corner reinforcement groove 15.

[0040] The concave outer edge forms a corner reinforcement groove 15, which can strengthen the sharp corner of the outer wall 12 of the edge protection body 1. The concave design converts the external impact force into elastic deformation of the groove wall, and the groove guides the stress to spread along the length direction of the edge protection body 1.

[0041] like Figure 1-5As shown, in some embodiments, the splicing structure 14 includes a connecting groove 141 at one end of the edge protector body 1 and a connecting block 142 at the other end. Two or more edge protector bodies 1 form a detachable edge protector assembly 2 through an interference fit between the connecting block 142 and the connecting groove 141.

[0042] The splicing structure 14 breaks through the traditional edge protection length limitation and realizes free combination and installation. Multiple sizes of edge protection bodies 1 are prefabricated, and detachable edge protection groups 2 of almost all lengths in the application scenario can be obtained through the splicing structure 14. The connecting block 142 and the connecting groove 141 are interference fit to generate radial clamping force, and self-locking is achieved with the elastic deformation of the hollow wall. The tool-free disassembly feature facilitates maintenance and replacement.

[0043] like Figure 1-5 As shown, in some embodiments, multiple edge protection bodies 1 of various lengths are prefabricated. By combining the interference fit between the connecting block 142 and the connecting groove 141, a number of edge protection bodies of various lengths can be derived. The crisscrossing grooves 13 separate the inner sidewall 11 and the outer sidewall 12 to form several buffer units 16, and the hollow cavities of each buffer unit 16 are interconnected.

[0044] The groove 13 grid divides the double wall into dry buffer units 16, which form a through air passage through the connection point 132. The structure of the buffer unit 16 causes the impact energy to decay step by step between units. The through air passage balances the internal and external air pressure and prevents negative pressure from collapsing.

[0045] The crisscrossing grooves 13 form a three-dimensional mesh stress dispersion structure. The grooves 13 are composed of multiple arched units 131 connected end to end, forming a wave-shaped structure with a gradually changing arc in the depth direction. The deepest recess is formed at the intersection of the inner and outer walls, forming interlocking connection points 132. These connection points 132 constitute a distributed micro-pillar support network. Compared with traditional single-wall edge protection, the impact absorption efficiency is improved. The edge protection body 1 adopts a blow molding or rotational molding one-piece molding process, so that the inner and outer walls of the L-shaped cross section, the grooves 13 and the top corner reinforcing grooves 15 are formed simultaneously, improving the overall structural strength of the edge protection body 1. The hollow structure will significantly reduce the weight compared with the solid edge protection, and the buffering performance can be controlled by adjusting the wall thickness gradient. There is no need for repeated molding. With the splicing structure 14, modular free combination can be achieved. The modular splicing breaks through the length limitation and can replace foam, pearl cotton or cardboard edge protection, solving the defects of existing technologies such as high brittleness of foam, low strength of pearl cotton and moisture absorption and deformation of cardboard. The waterproof and mildew-proof properties extend the service life.

[0046] In summary, by combining the integrally molded L-shaped cross-section edge protector body 1 with a network of wavy grooves 13 and distributed support connection points 132, a balance between high strength and excellent cushioning performance is achieved. It can completely replace traditional single-wall edge protectors, foam, pearl cotton, and cardboard edge protectors, solving industry problems such as the fragility of foam edge protectors, insufficient strength of pearl cotton, and moisture absorption and deformation of cardboard. It also has lightweight and impact-resistant characteristics. The modular splicing structure 14 breaks through the traditional edge protector length limitation. The overall recyclability meets environmental protection requirements and has wide applicability and economy.

[0047] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A double-layer hollow edge protector, comprising an edge protector body (1), characterized in that: The edge protection body (1) is a hollow structure formed by an inner sidewall (11) and an outer sidewall (12). The surfaces of the inner sidewall (11) and the outer sidewall (12) are provided with crisscrossing grooves (13). The two ends of the edge protection body (1) are provided with splicing structures (14) that cooperate with each other.

2. A dual level hollow guard according to claim 1 wherein: The edge protector body (1) is a hollow structure integrally formed by blow molding or rotational molding.

3. A dual level hollow guard according to claim 1 wherein: The groove (13) is composed of multiple arched units (131) connected end to end, forming a wave-shaped structure.

4. A dual level hollow guard according to claim 1 wherein: The grooves (13) on the inner wall (11) and the outer wall (12) are positioned correspondingly, and the grooves (13) are deepest at the intersection point.

5. A dual level hollow guard according to claim 1 wherein: The grooves (13) on the inner wall (11) and outer wall (12) are deepened in an arc shape in the depth direction, and a connection point (132) is formed at the intersection of the grooves (13). The corresponding inner and outer connection points (132) are joined together to form a support point.

6. A dual level hollow guard according to claim 1 wherein: The two outer side walls (12) of the edge protection body (1) intersect and are recessed inward to form a corner reinforcement groove (15).

7. The double-layer hollow edge protector according to claim 1, characterized in that: The splicing structure (14) includes a connecting groove (141) at one end of the edge protector body (1) and a connecting block (142) at the other end. Two or more edge protector bodies (1) form a detachable edge protector assembly (2) through the interference fit between the connecting block (142) and the connecting groove (141).

8. A dual level hollow guard according to claim 1 wherein: Multiple edge protector bodies (1) of various lengths are prefabricated. By combining the connecting block (142) and the connecting groove (141) with an interference fit, edge protectors of various lengths can be generated.

9. A dual level hollow guard according to claim 1 wherein: The crisscrossing grooves (13) separate the inner wall (11) and the outer wall (12) to form several buffer units (16), and the hollow cavities of each buffer unit (16) are interconnected.

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