Double-cut foldable u-channel

Abstract

The utility model belongs to the packaging protection technical field discloses double -notch foldable U -shaped angle bead, this angle bead includes a U -shaped angle bead body, it is constituted by bottom plate and both sides integral connection's side plate, the first cut -out for fast cutting is evenly provided with a plurality of first cut -out for fast cutting along its length direction in angle bead body, has realized that the length of angle bead can be freely decided without tool, the outer surface of bottom plate can be along the center line of its length direction and is equipped with a second cut -out for bending or folding, makes angle bead can adapt to the object package of different angle, or inwardly folds to reduce the volume of warehousing and transportation, and angle bead body can adopt multilayer waste paper hot -pressing composite and can be inlayed honeycomb paper core buffer layer between layers to enhance the impact resistance. The utility model has the beneficial effect of length can be freely decided, can adapt to a variety of angle bending, excellent buffering performance, save storage space, environmental protection and low -cost.

Description

Technical Field

[0001] This utility model relates to the field of packaging accessories technology, and in particular to a protective device for protecting the corners of items during product handling, storage and transportation, specifically a U-shaped corner protector with optimized structure and strong functional integration. Background Technology

[0002] In modern logistics, furniture, building materials, and electronics industries, the edges and corners of products are the most vulnerable and easily damaged by collisions and friction during distribution, affecting product quality and aesthetics. Therefore, U-shaped corner protectors are widely used as an important packaging protection material. Typically U-shaped, they can be secured to the edges of materials such as boards, doors, windows, glass, and furniture panels, providing effective cushioning and protection.

[0003] However, the existing U-shaped corner protectors have the following main shortcomings:

[0004] Traditional U-shaped corner protectors are typically manufactured and sold as standard parts of fixed length. In actual use, users need to protect objects with varying edge lengths, so the corner protectors must be cut. Cutting often requires specialized tools such as saws and cutters, which is not only cumbersome and laborious, but also inefficient, and can easily result in burrs, inaccurate dimensions, and even safety hazards.

[0005] Standard U-shaped corner protectors are designed with a 90-degree right angle, which makes it difficult to effectively cover non-90-degree corners, such as sharp acute angles or gentle obtuse angles. They are also unsuitable for round or curved edges. When used at non-standard angles, gaps will be created between the corner protector and the protected object, greatly reducing the protective effect and severely limiting its application scenarios.

[0006] Most U-shaped corner protectors rely solely on the hardness of the material itself for protection, with limited elastic deformation capabilities. When faced with strong impacts, their cushioning effect is inadequate, failing to effectively absorb and disperse energy, potentially causing the impact force to be directly transferred to the protected item, resulting in permanent damage.

[0007] Because U-shaped corner protectors have a certain three-dimensional spatial structure and are relatively long, they occupy a large volume during warehousing and transportation, making them difficult to stack efficiently. This invisibly increases logistics and storage costs, which is a considerable expense for both manufacturers and users using them on a large scale.

[0008] Therefore, developing a new type of U-shaped corner protector that can be easily adjusted in length, adapt to different angles, has better cushioning performance, and is easy to store is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0009] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a cleverly designed, multi-functional, double-cut, foldable U-shaped corner protector. This corner protector aims to achieve the following: it allows for quick and neat cutting to any desired length without tools; it protects standard right angles and effectively wraps around obtuse and acute angles through bending; it enhances impact and pressure resistance through composite materials and structural design; and it can be folded to significantly reduce space occupation and lower logistics costs.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] The double-cut, foldable U-shaped corner protector includes a U-shaped corner protector body, which consists of a base plate and two integrally formed side plates extending upwards from both sides of the base plate. Its core improvement, which distinguishes it from existing technologies, lies in its cutout design:

[0012] First, a primary incision is created, consisting of multiple transverse tear lines evenly distributed along the side of the corner protector body. These tear lines can be composed of a series of tiny through holes or pre-set indentations, penetrating both side panels and the bottom plate. This design, similar to the perforations on a stamp, significantly reduces the material bonding strength at the tear line locations without affecting the overall strength. Users can easily and straighten the corner protector by hand along any tear line without any tools, obtaining a corner protector segment of precise length.

[0013] Secondly, a second notch can be provided, namely a longitudinal folding groove along the longitudinal centerline of the corner protector body. This folding groove is preferably V-shaped and formed on the outer surface of the base plate. This design gives the corner protector a dual function:

[0014] Angle adaptation function: When it is necessary to cover the outer corner of an object, such as the edge of furniture, this V-shaped groove can serve as a preset bending guide line, allowing the corner protector to bend inward easily and precisely to 90 degrees or other angles, closely fitting the protected edge and solving the problem that traditional corner protectors cannot adapt to multiple angles.

[0015] Folding storage function: When the entire corner protector needs to be stored or transported, the entire corner protector can be folded inward along this longitudinal folding groove, so that the two side panels are almost touching. In this way, the cross-sectional area of ​​the corner protector is reduced by nearly half, which greatly saves storage and transportation space.

[0016] To further improve performance, this invention has also been optimized in terms of materials and structural details:

[0017] Preferably, in terms of material structure, the corner protector body adopts a multi-layer composite structure. For example, six or more layers of waste paper or rigid cardboard are used, which are hot-pressed together with environmentally friendly adhesive to form a high-strength laminated structure; furthermore, a honeycomb paper core cushioning layer can be embedded between these paper layers. The honeycomb structure is known for its lightweight and high-strength mechanical properties, which can effectively absorb and disperse impact energy. Its compressive strength far exceeds that of solid cardboard of the same weight, thereby significantly improving the cushioning and protective effect of the corner protector.

[0018] Preferably, in terms of reinforcement structure, reinforcing ribs extending along the length direction can be integrally formed or embedded in the inner layer of the corner protector body. These reinforcing ribs can be rigid paper strips or plastic strips, which are like steel bars in buildings, and can significantly improve the overall bending strength and rigidity of the corner protector, preventing it from easily deforming under stress.

[0019] Preferably, in terms of functional details, the inner surface of the side panel can be provided with an anti-slip structure, such as multiple parallel grooves, raised dotted or striped textures. These structures increase the friction between the corner protector and the surface of the protected object, effectively preventing the corner protector from sliding or falling off during transportation and ensuring that it is always in the best protective position.

[0020] In addition, to improve durability, the outermost layer of the corner protector can be covered with a moisture-proof decorative layer, such as PE film or decorative paper, which can not only prevent moisture and deformation, but also enhance the product's appearance.

[0021] Compared with the prior art, this utility model has the following advantages:

[0022] The innovative transverse tear line design of this utility model enables hand cutting, eliminating the tediousness and danger of using tools, reducing cutting time from several minutes to a few seconds, greatly improving packaging efficiency, and is especially suitable for occasions requiring a large number of customized lengths.

[0023] The innovative longitudinal V-shaped folding groove design of this utility model allows the same product to be used as a U-shaped guard strip to protect the edge of the board, and can also be easily bent into an L-shaped corner protector to protect the outer corner. It can adapt to various angles such as right angles and obtuse angles, greatly expanding its application range and reducing the inventory of required corner protector types.

[0024] The unique folding function of this invention reduces the stacking volume of the corner protectors by about 50% during storage and transportation, significantly reducing warehousing costs and logistics expenses, which has important economic value for both manufacturers and users. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the double-cut foldable U-shaped corner protector of this utility model;

[0026] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the corner protector body.

[0027] In the diagram: 1-Corner protector body; 2-Base plate; 3-Side plate; 4-Transverse tear line; 5-Vertical fold groove; 6-Honeycomb paper core buffer layer; 7-Laminated structure; 8-Anti-slip structure; 9-Reinforcing rib. Detailed Implementation

[0028] The technical solution of this utility model will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate this utility model more clearly, and are not intended to limit its scope of protection in any way.

[0029] Example 1

[0030] Reference Figure 1 and Figure 2 This embodiment discloses a double-cut foldable U-shaped corner protector. The corner protector includes a corner protector body 1 that is U-shaped in shape. The corner protector body 1 is composed of a horizontal base plate 2 and a pair of side plates 3 that extend vertically upward from both sides of the base plate 2. The three are integrally formed.

[0031] like Figure 1 As shown, in order to achieve free cutting of length, a transverse tear line 4 is provided at a fixed interval of, for example, every 10 centimeters along the entire length of the corner protector body 1. In this embodiment, the transverse tear line 4 is composed of a row of tiny round holes that run through the entire cross-section of the corner protector body 1. When the user needs a corner protector of a specific length, he / she only needs to find the tear line 4 that is closest to the required length, and then hold both ends of the corner protector with both hands and gently apply force along the line to cleanly and neatly separate the corner protector like tearing a stamp, without any additional tools.

[0032] like Figure 2 As shown, one of the core designs of this utility model is the longitudinal folding groove 5 located on the center line of the outer surface of the base plate 2. The groove has a V-shaped cross-section and its depth is approximately 70% of the thickness of the base plate 2, ensuring sufficient connection strength while providing a clear weak guide line. This design brings two key functions:

[0033] First, the angle wrapping function: when it is necessary to protect the 90-degree outer corner of a product, the corner protector can be bent inward along the longitudinal folding groove 5. The V-shaped groove structure will guide the corner protector to form an L-shape precisely, and its two side plates 3 can fit tightly against the two vertical surfaces of the object.

[0034] Secondly, the storage folding function allows operators to fold the entire corner protector body 1 completely inward along the longitudinal folding groove 5 for unused corner protectors, so that the tops of the two side panels 3 are close to each other or even touching. The space occupied by the folded corner protector in the cross-section is greatly reduced, making it easier to bundle, pack and stack, and significantly saving costs.

[0035] Example 2

[0036] Based on Embodiment 1, this embodiment further optimizes the material and internal structure of the corner protector body 1 to obtain superior physical properties.

[0037] Reference Figure 2 The corner protector body 1 is made of composite material. Its main body is a laminated structure 7, which is made of six layers of waste kraft paperboard bonded together with environmentally friendly polyvinyl alcohol glue under high temperature and pressure. In the middle layer of the laminated structure 7, a honeycomb paper core buffer layer 6 is also embedded. The pore size and wall thickness of the honeycomb paper core are optimized and can absorb a large amount of energy through structural collapse when impacted, thereby protecting the internal items.

[0038] To further improve bending resistance, two rigid paper strips are symmetrically embedded along the length direction between the innermost two layers of the laminated structure 7 as reinforcing ribs 9, which makes the corner protectors less prone to bending and breaking when subjected to greater pressure.

[0039] In addition, to prevent the corner protectors from sliding on smooth surfaces such as glass or painted panels, multiple parallel grooves extending along the length direction are embossed on the inner surfaces of both side panels 3 as anti-slip structures 8. These grooves increase the coefficient of friction between the contact surfaces, ensuring the stability of the corner protectors during transportation.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent modifications or substitutions made by those skilled in the art without departing from the design spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A double-cut, foldable U-shaped corner protector, characterized in that, It includes a U-shaped corner protector body (1), which is composed of a base plate (2) and two side plates (3) extending upward from both sides of the base plate (2) and integrally formed, as well as multiple first cuts arranged laterally along the corner protector body (1), which are used to quickly cut along the length of the corner protector.

2. The double-cut foldable U-shaped corner protector according to claim 1, characterized in that, The first cut is a transverse tear line (4), which is composed of a series of discontinuous through holes or indentations and penetrates the two side plates (3) and the bottom plate (2).

3. The double-cut foldable U-shaped corner protector according to claim 1, characterized in that, It also includes a second cut along the longitudinal direction of the corner protector body (1), the second cut being disposed on the base plate (2) for bending the corner protector body (1) along its length direction.

4. The double-cut foldable U-shaped corner protector according to claim 3, characterized in that, The second cut is a longitudinal folding groove (5), which is provided on the outer surface of the base plate (2) and extends along its centerline in the length direction.

5. The double-cut foldable U-shaped corner protector according to claim 4, characterized in that, The longitudinal folding groove (5) has a V-shaped cross-section and its depth is less than the thickness of the base plate (2).

6. The double-cut foldable U-shaped corner protector according to claim 1, characterized in that, The corner protector body (1) is a multi-layer composite structure, which includes a laminated structure (7) and a honeycomb paper core buffer layer (6).

7. The double-cut foldable U-shaped corner protector according to claim 6, characterized in that, The laminated structure (7) is made by hot pressing and bonding multiple layers of waste paper or rigid cardboard; the honeycomb paper core buffer layer (6) is disposed inside the laminated structure (7).

8. The double-cut foldable U-shaped corner protector according to claim 6, characterized in that, The laminated structure (7) of the corner protector body (1) is provided with at least one reinforcing rib (9) extending along the length direction to improve the bending strength of the corner protector body (1).

9. The double-cut foldable U-shaped corner protector according to claim 1, characterized in that, The inner surface of the side plate (3) is provided with an anti-slip structure (8), which is a plurality of parallel grooves or raised strip textures.

10. The double-cut foldable U-shaped corner protector according to claim 1, characterized in that, The outer surface of the corner protector body (1) is covered with a moisture-proof decorative layer.

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