Corner protector structure and combined packaging structure

Abstract

The application relates to a corner protection structure and a combined packaging structure, the combined packaging structure comprising an outer box and the corner protection structure, the corner protection structure comprising a middle plate, a corner protection plate and a folding plate, the corner protection plate being integrally connected to the middle plate, the corner protection plate being foldable relative to the middle plate and surrounding the middle plate to form a cavity, the corner protection plate being provided with a folding plate capable of moving relative to the corner protection plate, in a first moving state, the folding plate is coplanar with the corner protection plate, in a second moving state, the folding plate is out of plane with the corner protection plate, and the corner protection plate is provided with a slot for inserting an end of a to-be-protected piece, so that the end of the to-be-protected piece can be clamped by the folding plate, and the cavity can buffer and protect the end of the to-be-protected piece. It can be seen that the corner protection structure can be folded by only one paper plate, without needing too many materials and tools, and without needing to be formed by die pressing, so that the material cost and the production equipment cost can be greatly reduced.

Description

Technical Field

[0001] This application relates to the field of product packaging technology, and in particular to a corner protection structure and a combined packaging structure. Background Technology

[0002] As the international community places increasing emphasis on environmental protection, more and more products are gradually abandoning plastic bags for packaging and instead adopting more environmentally friendly materials, such as corrugated cardboard boxes.

[0003] To prevent product damage from external impacts during transportation, corner protectors are typically installed at each corner of the product inside the packaging box. These corner protectors utilize their cushioning and shock-absorbing properties to ensure product safety. Previously, corner protectors were generally made of foam materials such as polystyrene or PVC foam. However, due to the drawbacks of foam materials, such as their slow degradation and large storage space requirements, they have been gradually phased out. As a result, paper-plastic corner protectors made from cardboard have emerged on the market. However, paper-plastic corner protectors usually require mold pressing, leading to a significant increase in material and production equipment costs. Utility Model Content

[0004] Therefore, it is necessary to address the problem that most existing corner protector structures are paper-plastic corner protector structures that require mold forming, which leads to a significant increase in material and production equipment costs. A corner protector structure that can solve the above problems and a combined packaging structure including the corner protector structure are needed.

[0005] According to one aspect of this application, a corner protection structure is provided, comprising:

[0006] Intermediate plate;

[0007] A corner protector is integrally connected to one side of the middle plate along a first direction. The corner protector can be folded relative to the middle plate and forms a cavity with the middle plate. A folding plate that can move relative to the corner protector is connected to the corner protector. In a first active state, the folding plate is coplanar with the corner protector. In a second active state, the folding plate is not coplanar with the corner protector and a slot is formed on the corner protector.

[0008] In one embodiment, the corner protector has at least two parallel first fold lines, and the cavity can be formed by folding the corner protector sequentially along each of the first fold lines; the folding plate has a second fold line parallel to the first fold lines, and in the second active state, the folding plate folds along the second fold line toward the cavity to form the slot.

[0009] In one embodiment, the corner protector includes a first plate, a second plate, and a third plate connected in sequence. One side of the first plate is integrally connected to the middle plate. The connecting edge between the second plate and the first plate, and the connecting edge between the third plate and the second plate, respectively form a first fold line.

[0010] When the corner protector is folded to form the cavity, the first plate is positioned opposite to the third plate, and the second plate is positioned opposite to the middle plate.

[0011] In one embodiment, the corner protector further includes a fourth plate, which is integrally connected to the side of the third plate away from the second plate, and the connecting edge between the fourth plate and the third plate also forms a first fold line;

[0012] When the corner protector is folded to form the cavity, the fourth plate can be folded relative to the third plate and attached to the first plate.

[0013] In one embodiment, baffles are integrally connected to both sides of the intermediate plate along a second direction perpendicular to the first direction. Each baffle can be folded relative to the intermediate plate toward the intermediate plate so that when the corner protectors form the cavity, the baffle can close the side opening of the cavity.

[0014] In one embodiment, the side of the baffle away from the middle plate is connected to a tongue, which can be folded relative to the baffle so that when the corner protector forms the cavity, the tongue can be inserted into the cavity and attached to the corner protector.

[0015] In one embodiment, the corner protector has two pieces, which are integrally connected to opposite sides of the middle plate along a first direction; when each corner protector is folded to form the cavity and each folded plate forms the slot on the corner protector, the two slots are arranged opposite to each other and are interconnected.

[0016] According to another aspect of this application, a combined packaging structure is provided, comprising:

[0017] Outer box;

[0018] As described in any of the above embodiments, when the corner protection structure is folded, it can be stored in the outer box, and the slot formed by folding each corner protection structure is used for inserting the end of the part to be protected.

[0019] In one embodiment, the combined packaging structure further includes an inner box that can be housed in the outer box, the inner box serving as the protected component and used to house the product; when the corner protector structure is folded and housed in the outer box, the end of the inner box is inserted into the slot;

[0020] And / or, the combined packaging structure further includes at least two cushioning structures that can be housed within the outer box, all of the cushioning structures being arranged in pairs, wherein when the item to be protected is housed within the outer box, the item to be protected is held between the pairs of cushioning structures.

[0021] In one embodiment, the corner protector structure has at least two, all of which are arranged in pairs with a distance between them, and the distance between two oppositely arranged corner protector structures is equal to the dimension of the buffer structure along its own length direction.

[0022] The aforementioned corner protector structure and the combined packaging structure including this corner protector structure, by integrally connecting the middle plate and the corner protector plate, allow the cavity to be formed simply by folding the corner protector plate relative to the middle plate. Furthermore, a folding plate is connected to the corner protector plate, allowing the folding plate to have a first movable state and a second movable state. When the folding plate is in the first movable state, it is coplanar with the corner protector plate; when the folding plate is in the second movable state, it is coplanar with the corner protector plate, and a slot for inserting the protected part is formed on the corner protector plate. Thus, when the end of the protected part is inserted into the slot, the folding plate can clamp the end of the protected part, providing cushioning protection. It is evident that the aforementioned corner protector structure can be folded and formed using only a single sheet of cardboard, requiring minimal materials and tools, and eliminating the need for mold pressing, thereby significantly reducing material and production equipment costs. Attached Figure Description

[0023] Figure 1 This is a top view of the corner protector structure provided in an embodiment of this application in its unfolded state.

[0024] Figure 2 This is a schematic diagram of the corner protector structure after folding and forming according to an embodiment of this application.

[0025] Figure 3 A schematic diagram of the corner protector structure provided in an embodiment of this application during the folding process. Figure 1 .

[0026] Figure 4 A schematic diagram of the corner protector structure provided in an embodiment of this application during the folding process. Figure 2 .

[0027] Figure 5 Exploded view of a combined packaging structure provided in an embodiment of this application Figure 1 .

[0028] Figure 6 Exploded view of a combined packaging structure provided in an embodiment of this application Figure 2 .

[0029] Explanation of reference numerals in the attached figures:

[0030] 10. Combined packaging structure; 100. Outer box; 200. Inner box; 300. Corner protection structure; 301. First fold line; 302. Second fold line; 303. Cavity; 304. Slot; 305. Third fold line; 310. Middle board; 320. Corner protection board; 321. First board; 322. Second board; 323. Third board; 324. Fourth board; 330. Baffle; 340. Folding board; 350. Tongue; 400. Buffer structure; 50. Product. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0032] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms 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 component 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 of this application.

[0033] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0037] One embodiment of this application provides a corner protector structure, which can be formed by folding a cardboard and is used to wrap the end of the part to be protected, so that the end of the part to be protected can be protected during handling or transportation, so as to avoid damage to the part to be protected due to external impact.

[0038] The structure of the corner protector in this application is described below. This embodiment is only used as an example and does not limit the technical scope of this application. It can be understood that in other embodiments, the corner protector structure of this application can be used to wrap the end of any part to be protected, and there is no limitation here.

[0039] See Figure 1 , Figure 1 This is a top view of a corner protection structure 300 according to an embodiment of the present application in its unfolded state. Figure 2A schematic diagram of the corner protector structure 300 after folding is shown in this embodiment. The corner protector structure 300 provided in one embodiment of this application, when unfolded, has a cross-shaped structure, including a middle plate 310, two corner protector plates 320, and two baffles 330. The two corner protector plates 320 are integrally connected to opposite sides of the middle plate 310 along a first direction (X direction shown in the figure), and the two baffles 330 are integrally connected to opposite sides of the middle plate 310 along a second direction (Y direction shown in the figure, where the Y direction is perpendicular to the X direction). Each corner protector plate 320 can be connected to the middle plate 310 along its connecting edge (…). Figure 1 The T1 edge shown is folded relative to the middle plate 310, and each corner guard 320 can be folded to form a hollow cavity 303. The end of the part to be protected can be inserted into the cavity 303, so that the two corner guards 320 wrap around the end of the part to be protected, and the cavity 303 is used to buffer and absorb shock at the end of the part to be protected; each baffle 330 can also be folded along its connecting edge to the middle plate 310 ( Figure 1 The T2 side shown is folded relative to the middle plate 310 to close the side opening of the cavity 303 along the second direction after the corner plate 320 is folded to form the cavity 303, thereby reinforcing the corner plate 320 and preventing it from being crushed under external force after the corner plate 320 is folded to form the cavity 303.

[0040] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the corner protector 320 has three parallel first fold lines 301, which are parallel to the T1 side, so that the corner protector 320 can be folded sequentially along each first fold line 301 toward the middle plate 310 to form a cavity 303; and a folding plate 340 that can move relative to the corner protector 320 is connected to the corner protector 320. The folding plate 340 can be folded relative to the corner protector 320 to form a slot 304, so that when the corner protector 320 is folded to form the cavity 303 and the folding plate 340 forms the slot 304, the end of the part to be protected can be inserted into the slot 304.

[0041] Furthermore, such as Figure 1 and Figure 4As shown, since there are two corner protectors 320, there are also two folding plates 340. Each folding plate 340 is integrally connected to the corner protector 320 on opposite sides parallel to the first fold line 301, and each folding plate 340 has a second fold line 302 parallel to the first fold line 301. When the corner protector 320 is unfolded relative to the middle plate 310, the folding plate 340 is in a first active state. In the first active state, the folding plate 340 and the corner protector 320 are coplanar. When the corner protector 320 forms the cavity 303, the folding plate 340 can be in a second active state. In the second active state, the folding plate 340 and the corner protector 320 are not coplanar. That is, in the second active state, the folding plate 340 can be folded along the second fold line 302 toward the cavity 303 to form a slot 304 in the cavity 303 that matches the end profile of the part to be protected and allows the end of the part to be protected to be inserted. At this time, the end of the part to be protected can be inserted into the slot 304.

[0042] When the end of the part to be protected is inserted into the slot 304, the folding plate 340 can fit against the surface of the part to be protected, so that the end of the part to be protected is held within the slot 304 by the folding plate 340. In the embodiment shown in the figure, when each corner protector 320 is folded along the first fold line 301 to form the cavity 303, and when each corresponding folding plate 340 is folded to form the slot 304, each corner protector 320 can be folded along line T1 relative to the middle plate 310 toward the other corner protector 320, so that the two folding plates 340 and the slots 304 formed by the two corner protectors 320 are arranged opposite to each other and communicate with each other. In this way, when the end of the part to be protected is inserted into the slot 304, the two slots 304 formed by the two corner protectors 320 and their respective corresponding folding plates 340 can completely wrap the end of the part to be protected.

[0043] More specifically, regarding the structure of corner protector 320, such as Figure 1 As shown, three first fold lines 301 divide the corner protector 320 into a first plate 321, a second plate 322, a third plate 323, and a fourth plate 324 connected in sequence. One side of the first plate 321 is integrally connected to the middle plate 310. The connecting edge between the first plate 321 and the middle plate 310 constitutes the T1 edge. The connecting plate between the second plate 322 and the first plate 321, the connecting edge between the third plate 323 and the second plate 322, and the connecting edge between the fourth plate 324 and the third plate 323 each constitute a first fold line 301. When the fold plate 340 and the corner protector 320 are coplanar, part of the projection area of ​​the fold plate 340 on the corner protector 320 is located on the second plate 322, and the other part is located on the third plate 323.

[0044] Thus, when the corner protector 320 is folded to form the cavity 303, the first plate 321 can be folded relative to the middle plate 310, the second plate 322 can be folded relative to the first plate 321, the third plate 323 can be folded relative to the second plate 322, and the fourth plate 324 can be folded relative to the third plate 323, so that the first plate 321 and the third plate 323 are arranged opposite each other, and the second plate 322, the fourth plate 324 and the middle plate 310 are arranged opposite each other.

[0045] Preferably, when the corner protector 320 is unfolded, the dimension of the first plate 321 along the first direction is equal to the dimension of the third plate 323 along the first direction, and the dimension of the second plate 322 along the first direction is equal to the dimension of the fourth plate 324 along the first direction, so that after the corner protector 320 is folded into the cavity 303, the first plate 321 and the third plate 323 are parallel to each other, and the second plate 322, the fourth plate 324 and the middle plate 310 are parallel to each other, and the fourth plate 324 is attached to the middle plate 310 and attached to the first plate 321.

[0046] It is understood that the structure of the corner protector 320 is not limited to this. The fourth plate 324 may not be provided, or more first fold lines 301 may be provided on the corner protector 320, so that more first fold lines 301 divide the corner protector 320 into more plates. As long as the number of first fold lines 301 is at least two, the corner protector 320 can be folded along the first fold lines 301 to form the cavity 303. When the folding plate 340 is coplanar with the corner protector 320, the projection area of ​​the folding plate 340 on the corner protector 320 can cover the plates divided by more corner protectors 320, so as to divide two or more first fold lines 301 into two segments. There are no limitations on the above.

[0047] Regarding the placement of the folding plate 340 on the corner protector 320 and the specific location of the second fold line 302 on the folding plate 340, as follows: Figure 1 As shown, the two opposite edges of the folded plate 340 parallel to the first fold line 301 are defined as the first edge (not shown) and the second edge (not shown). The first edge is located on the second plate 322, and the second edge is located on the third plate 323. The distance from the connecting edge of the second plate 322 and the third plate 323 to the first edge is equal to the distance from the second fold line 302 to the second edge. Thus, it is easy to understand that when the corner protector 320 is folded along the first fold line 301 to form a cavity 303, and the folded plate 340 is folded along the second fold line 302, a part of the folded plate 340 is parallel to the second plate 322, and another part is parallel to the first plate 321 and the third plate 323, so that when the part to be protected is a regular cube, the folded plate 340 can fit tightly against the surface of the part to be protected.

[0048] As an optional implementation, when the corner protector 320 and the folding plate 340 are unfolded relative to the middle plate 310, the projection of the folding plate 340 on a plane exactly fills the gap of the projection of the corner protector 320 on that plane. In other words, the corner protector structure 300 looks like a complete piece of cardboard before folding. When cutting and cutting the cardboard to form the folding plate 340, only two lines need to be cut on the corner protector 320, thus simplifying the cutting and trimming process.

[0049] Based on the above embodiments, as a further improvement, such as Figure 1 and Figure 4 As shown, a tongue 350 is connected to the side of the baffle 330 away from the middle plate 310. The connecting line between the baffle 330 and the tongue 350 is a third fold line 305. The tongue 350 can be folded relative to the baffle 330 along the third fold line 305 so that when the corner protector 320 forms the cavity 303, the tongue 350 can be inserted into the cavity 303 from one side opening. Preferably, the dimension of the baffle 330 in the second direction is equal to the dimensions of the first plate 321 and the third plate 323 in the first direction, so that when the tongue 350 is inserted into the cavity 303, it can be attached to the second plate 322 of the corner protector 320. This allows the baffle 330 to be better fixed after being folded relative to the middle plate 310, preventing the baffle 330 from returning to its unfolded state after folding to close the side opening of the cavity 303. In the embodiment shown in the figure, since there are two corner protectors 320, each baffle 330 is connected to two tongues 350. Each tongue 350 can be attached to the second plate 322 formed after the corner protector 320 is folded. Of course, each baffle 330 can also be connected to only one tongue 350. The size of the tongue 350 along the first direction is equal to the size of the baffle 330 along the first direction. There is no limitation here, as long as the baffle 330 can be fixed well.

[0050] It should be noted that the corner protection structure 300 provided in this application is not limited to the structure shown in the figure. For example, the baffle 330 may not be provided, or only one corner protection plate 320 may be provided. However, in the embodiment shown in the figure, providing two corner protection plates 320 can more completely wrap the end of the part to be protected, and providing the baffle 330 can better reinforce the corner protection plate 320 after the corner protection plate 320 is folded to form the cavity 303. Obviously, this is the best embodiment.

[0051] The above Figure 1 The corner protection structure 300 provided in the illustrated embodiment, when folded into Figure 2 When the folding shape is shown, combine Figure 3 and Figure 4 As shown, the folding steps are as follows:

[0052] First, fold the two corner protectors 320 slightly along the T1 side relative to the middle plate 310;

[0053] The second step is to fold the two corner protectors 320 along each of the first fold lines 301 to form the cavity 303.

[0054] The third step is to slightly fold the two baffles 330 along the T2 edge relative to the middle plate 310, and fold the tongue 350 along the third fold line 305 relative to the baffle 330 by 90°, forming as shown. Figure 3 The shape shown;

[0055] Fourth step, fold the fold plate 340 back along the second fold line 302 towards the cavity 303 to form a slot 304, forming as shown. Figure 4 The form;

[0056] The fifth step is to fold the two corner protectors 320 along the first fold line 301 to form a third plate 323 that fits together. Then, insert the tongue 350 into the cavity 303 from the side opening and fit it onto the second plate 322 to complete the folding steps of the corner protector structure 300.

[0057] Therefore, the corner protector structure 300 provided in this application is a piece of cardboard before folding. It can be folded into shape simply by folding the folding plate 340. It does not require too many materials and tools, nor does it need to be pressed into shape by molds. Therefore, it can significantly reduce material costs and production equipment costs.

[0058] It is understandable that some of the steps above are not in any particular order. For example, the order of steps one through four can be any, and there is no restriction here.

[0059] Additionally, see Figure 5 and Figure 6 The embodiments of this application also provide a combined packaging structure 10, which includes an outer box 100, an inner box 200, and the corner protection structure 300 described in the above embodiments. The outer box 100 has a hollow inner cavity, and when the corner protection structure 300 is folded... Figure 2In the configuration shown, the corner protector structure 300 can be housed in the inner cavity of the outer box 100, and the inner box 200 can also be housed in the inner cavity of the outer box 100. At this time, the inner box 200 serves as the part to be protected, and its end can be inserted into the slot 304 of the corner protector structure 300. The hollow cavity 303 inside the corner protector structure 300 provides cushioning and protection for the end of the inner box 200, thereby effectively protecting the inner box 200 and the product 50 placed inside the inner box 200, and preventing the inner box 200 from being compressed and thus damaging the product 50. Preferably, the combined packaging structure 10 also includes a cushioning structure 400 that can be housed in the outer box 100. There are at least two cushioning structures 400, and all cushioning structures 400 are arranged in pairs. When the inner box 200 is housed in the outer box 100, the inner box 200 is sandwiched between the two pairs of cushioning structures 400. Each cushioning structure 400 has a hollow cushioning cavity, which can be used to protect the part of the inner box 200 that is not covered by the corner protection structure 300, so as to better protect the product 50 placed in the inner box 200.

[0060] It is understood that the number of cushioning structures 400 and corner protection structures 300 is unlimited, and their specific number depends on the shape of the inner box 200, for example... Figure 6 In one embodiment, the inner box 200 is hexahedral in shape, resulting in four cushioning structures 400. Two cushioning structures 400 are located on the front and rear sides of the inner box 200, and the other two are located on the top and bottom sides. Additionally, there are two corner protectors 300, arranged in pairs with a distance between them. The two ends of the inner box 200 are inserted into the corner protectors 300, and the distance between the two opposing corner protectors 300 is equal to the length of each cushioning structure 400, ensuring that the four cushioning structures 400 completely cover the portion of the inner box 200 exposed above the corner protectors 300. In other embodiments, if the inner box 200 or product 50 has multiple ends, the number of corner protectors 300 can be determined based on the number of ends of the inner box 200 or product 50, and there is no particular limitation here.

[0061] It is also understood that the inner box 200 and the cushioning structure 400 can be selected as needed. That is, the combined packaging structure 10 can also include only the outer box 100 and the corner protection structure 300. In this case, the corner protection structure 300 directly wraps and protects the end of the product 50. The combined packaging structure 10 can also include only the inner box 200, the corner protection structure 300 and the cushioning structure 400, or only the outer box 100, the inner box 200 and the corner protection structure 300. There is no limitation on this.

[0062] The outer box 100, inner box 200, and cushioning structure 400 can be similar to the corner protector structure 300, each made of a folded piece of cardboard, or they can be structures that have already been formed by molding or other processing methods. The specific structure is not limited, and can be referred to in the various embodiments of the prior art or improved based on the various embodiments of the prior art. It will not be described in detail here.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A corner protector structure, characterized by, include: Intermediate plate (310); A corner protector (320) is integrally connected to one side of the intermediate plate (310) along a first direction. The corner protector (320) can be folded relative to the intermediate plate (310) and forms a cavity (303) with the intermediate plate (310). A folding plate (340) that can move relative to the corner protector (320) is connected to the corner protector (320). In a first active state, the folding plate (340) is coplanar with the corner protector (320). In a second active state, the folding plate (340) is not coplanar with the corner protector (320) and a slot (304) is formed on the corner protector (320).

2. The corner protector structure of claim 1, wherein The corner protector (320) has at least two parallel first fold lines (301), and the cavity (303) can be formed by folding the corner protector (320) sequentially along each of the first fold lines (301); the folding plate (340) has a second fold line (302) parallel to the first fold line (301), and in the second active state, the folding plate (340) folds along the second fold line (302) toward the cavity (303) to form the slot (304).

3. The corner protector structure of claim 2, wherein, The corner protector (320) includes a first plate (321), a second plate (322), and a third plate (323) connected in sequence. One side of the first plate (321) is integrally connected to the middle plate (310). The connecting edge between the second plate (322) and the first plate (321) and the connecting edge between the third plate (323) and the second plate (322) respectively form a first fold line (301). When the corner protector (320) is folded to form the cavity (303), the first plate (321) is disposed opposite to the third plate (323), and the second plate (322) is disposed opposite to the middle plate (310).

4. The corner protector structure of claim 3, wherein, The corner protector (320) also includes a fourth plate (324), which is integrally connected to the side of the third plate (323) away from the second plate (322), and the connecting edge of the fourth plate (324) and the third plate (323) also forms a first fold line (301). When the corner protector (320) is folded to form the cavity (303), the fourth plate (324) can be folded relative to the third plate (323) and attached to the first plate (321).

5. The corner protector structure of claim 1, wherein, Along a second direction perpendicular to the first direction, baffles (330) are integrally connected to both sides of the intermediate plate (310). Each baffle (330) can be folded relative to the intermediate plate (310) toward the intermediate plate (310) so that when the corner guards (320) form the cavity (303), the baffle (330) can close the side opening of the cavity (303).

6. The corner protector structure of claim 5, wherein, The side of the baffle (330) away from the middle plate (310) is connected to a tongue (350). The tongue (350) can be folded relative to the baffle (330) so that when the corner protector (320) forms the cavity (303), the tongue (350) can be inserted into the cavity (303) and attached to the corner protector (320).

7. The corner protection structure according to any one of claims 1-6, characterized in that, The corner protector (320) has two pieces, and the two corner protectors (320) are integrally connected to the two opposite sides of the middle plate (310) along the first direction; when each corner protector (320) is folded to form the cavity (303) and each folding plate (340) forms the slot (304) on the corner protector (320), the two slots (304) are arranged opposite to each other and communicate with each other.

8. A combination packaging structure characterized by, include: Outer box (100); The corner protector structure (300) as described in any one of claims 1-7, when the corner protector structure (300) is folded, the corner protector structure (300) can be stored in the outer box (100), and the slot (304) formed by folding each corner protector structure (300) is used for inserting the end of the part to be protected.

9. The combination packaging structure of claim 8, wherein The combined packaging structure (10) also includes an inner box (200) that can be stored in the outer box (100). The inner box (200) serves as the protected component and is used to accommodate the product (50). When the corner protector structure (300) is folded and stored in the outer box (100), the end of the inner box (200) is inserted into the slot (304). And / or, the combined packaging structure (10) further includes at least two cushioning structures (400) that can be housed within the outer box (100), all of the cushioning structures (400) being arranged in pairs, wherein when the object to be protected is housed within the outer box (100), the object to be protected is held between the pairs of cushioning structures (400).

10. The combination packaging structure of claim 9, wherein The corner protection structure (300) has at least two, and all the corner protection structures (300) are arranged in pairs with a distance between them. The distance between two corner protection structures (300) arranged in pairs is equal to the dimension of the buffer structure (400) along its own length direction.

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