A packaging box liner structure

Abstract

The utility model relates to a kind of packing box lining structure, including the lower lining for supporting product and the upper lining buckling with the lower lining, the lower lining and upper lining jointly define the accommodation space for accommodating product;The outer side of the lower lining and upper lining is respectively provided with a plurality of convex rib, the rib extends along the direction of the lining structure into packing box;The rib includes connected lead-in section and support section, the lead-in section is located at the rib end close to the start of being loaded, and its outer surface constitutes a tapering guide slope in the direction of loading section size;The utility model is provided with the rib with lead-in section and support section by setting on the outer side of lower lining and upper lining, the tapering slope of lead-in section is used to realize the smooth guiding loading of lining, then support section and box wall form surface contact support, effectively solve the contradiction that large product lining requires tight anti-shake and is difficult to load, realize the dual effect of convenient loading and stable protection.

Description

Technical Field

[0001] This utility model relates to the field of product packaging technology, and in particular to a packaging box lining structure. Background Technology

[0002] In the logistics, transportation, and warehousing of products, packaging box liners serve as an important protective component, widely used in the packaging of gifts, fruits, and various fragile and valuable items. Their core function is to effectively protect products from damage caused by bumps, drops, or vibrations during handling and transportation through cushioning and isolation.

[0003] Existing packaging box liners primarily fit the box in two ways. The first is where the liner's external dimensions are much smaller than the box's internal dimensions. While this makes it easier to place the liner inside, during transport, the liner and the product it carries can experience significant movement and displacement within the box, failing to provide stable and reliable fixation and greatly increasing the risk of product damage. Therefore, the more common approach is the second method: the liner's external dimensions are tightly fitted to the box's internal dimensions. This interference or tight fit design significantly reduces the gap between the liner and the box, effectively suppressing product movement within the box and improving protective performance.

[0004] However, the second model also brings new technical challenges: for small, lightweight products, manpower can easily press the liner into the packaging box; but for large products that are bulky, heavy, and cannot be moved by manpower, the liner itself is also relatively large. When using forklifts, cranes, and other auxiliary equipment for packing, there is almost no operating margin between the liner and the inner wall of the box, making alignment and insertion extremely difficult. It is very easy to damage the liner or packaging box during forced loading, resulting in low packing efficiency or even failure to complete the packing operation. Utility Model Content

[0005] In order to solve the technical problems existing in the background art, the present invention provides a packaging box lining structure that can not only realize easy and convenient boxing operation, but also reliably limit product shaking during transportation.

[0006] The technical solution is as follows: a packaging box liner structure, including a lower liner for supporting the product and an upper liner that fastens to the lower liner, the lower liner and the upper liner together defining a receiving space for accommodating the product; the outer surfaces of the lower liner and the upper liner are respectively provided with a plurality of protruding ribs, the ribs extending along the direction in which the liner structure is inserted into the packaging box; the ribs include a connected guide section and a support section, the guide section is located at the end of the rib near the beginning of insertion, its outer surface forming a guide slope with a gradually decreasing cross-sectional size in the insertion direction, and the outer surface of the support section is used to form a surface contact support with the inner wall of the packaging box after the liner structure is inserted into the packaging box.

[0007] Preferably, a plurality of the ribs are disposed on the left and right sides of the lower and upper linings and the top surface of the upper lining.

[0008] Preferably, the outer surfaces of the lower and upper linings are provided with reinforcing ribs, and the extending direction of the reinforcing ribs intersects the insertion direction.

[0009] Preferably, the ribs on the left and right sides of the lower and upper linings are respectively provided with snap-fit ​​structures. The snap-fit ​​structure includes a snap-fit ​​strip on one side and a snap-fit ​​groove on the other side. The snap-fit ​​strip and the snap-fit ​​groove are adapted to each other and can be snapped together to restrict the relative movement of the lower and upper linings in the snap-fit ​​state.

[0010] Preferably, the extension direction of the card strip is inclined relative to the vertical or horizontal direction.

[0011] Preferably, the card strip on the left side is tilted in the opposite direction to the card strip on the right side.

[0012] Preferably, the outer side of the lower liner and the upper liner away from the insertion start end is provided with a pull portion.

[0013] Compared with the prior art, the present invention has the following advantages: 1. This utility model solves the contradiction of large products' inner linings being both tight and difficult to install by setting ribs with guide sections and support sections on the outer sides of the lower and upper linings. The gradually tapering slope of the guide section enables smooth guidance and installation of the inner lining, and the support section forms a surface contact support with the box wall. This achieves the dual effect of convenient boxing and stable protection.

[0014] 2. By rationally arranging the ribs on the left, right and top surfaces of the lining, this utility model can simultaneously obtain guidance and support from multiple inner wall directions of the packaging box, significantly improving the overall stability of the lining within the box and effectively preventing multi-directional shaking that may occur during the transportation of large products.

[0015] 3. This utility model uses reinforcing ribs whose extension direction intersects with the insertion direction, which significantly enhances the structural rigidity and compressive strength of the inner liner body, making it less prone to deformation and damage when bearing the weight of large products and external pressure, thereby ensuring the inner liner's long-lasting protection of the product.

[0016] 4. This utility model provides clear assembly guidance and firm locking for the fastening of the upper and lower linings by setting a snap-fit ​​structure composed of inclined clips and slots, which effectively prevents the two from loosening or misaligning during handling and vibration, and ensures the reliability of the inner lining as an integral structure.

[0017] 5. This utility model creates an interlocking mechanism by designing the left and right side clips to be tilted in opposite directions, which can simultaneously counteract separation forces from different directions, greatly enhancing the connection stability of the inner lining after fastening.

[0018] 6. This utility model provides a pull part at the end of the inner lining, which provides a point of leverage for removing the inner lining from the packaging box. This allows the inner lining to be easily pulled out with the help of tools or by multiple people working together during unloading, greatly improving the humanization and operability of loading and unloading large products. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the assembly structure of the inner lining structure and the packaging box of this utility model.

[0021] Figure 3 This is an exploded view of the lining structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the rib of this utility model.

[0023] The meanings of the reference numerals in the figure are as follows: 1: lower liner, 2: upper liner, 3: rib, 31: inlet section, 32: support section, X: insertion direction, 4: retaining strip, 5: pulling part. Detailed Implementation

[0024] 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.

[0025] like Figures 1 to 4As shown, this utility model provides a specific embodiment of a packaging box liner structure. The liner structure includes a lower liner 1 for supporting the product and an upper liner 2 that engages with the lower liner 1, together forming a storage space for accommodating and protecting the product. The lower liner 1 and upper liner 2 are preferably integrally molded from EPP foamed polypropylene, which is lightweight, has high cushioning properties, and good toughness.

[0026] In this embodiment, the left and right sides of the lower liner 1, and the left, right, and top surfaces of the upper liner 2 are each provided with one or two protruding ribs 3. These ribs 3 extend along the direction X of the inner liner structure being inserted into the packaging box. Figure 4 As shown, each rib 3 includes a connected guide section 31 and a support section 32. The guide section 31 is located at the end of the rib 3 near the starting point of insertion, and its outer surface forms a guide slope with a gradually decreasing cross-sectional size in the insertion direction X. This slope forms a 15° angle with the horizontal direction and its length is one-fifth of the total length of the rib. The outer surface of the support section 32 is a vertical plane parallel to the insertion direction X, which is used to form a stable surface contact support with the inner wall of the packaging box after the inner lining structure is fully inserted into the packaging box. This structure achieves smooth insertion through the guide slope of the guide section 31 and achieves a tight fit through the support section 32, effectively solving the contradiction that the inner lining of large products needs to be both tight and anti-shake, yet difficult to insert.

[0027] refer to Figure 1 To further enhance structural strength, several reinforcing ribs are provided on the outer surfaces of the lower liner 1 and the upper liner 2. The extending direction of these reinforcing ribs is perpendicular to the insertion direction X, thereby significantly enhancing the structural rigidity and compressive strength of the inner liner body, making it less prone to deformation and damage when subjected to the weight of large products and external pressure.

[0028] refer to Figure 2 and Figure 3 To ensure a reliable connection between the upper and lower linings, snap-fit ​​structures are provided on the left and right sides of the lower lining 1 and the upper lining 2, respectively. Specifically, the snap-fit ​​strip 4 on the left side rib of the upper and lower linings is adapted to the snap-fit ​​groove 41 on the left side rib of the upper and lower linings; similarly, the snap-fit ​​strip 4 on the right side rib of the upper and lower linings is adapted to the snap-fit ​​groove 41 on the right side rib of the upper and lower linings. The extension direction of the snap-fit ​​strip 4 is inclined at 30°-45° relative to the vertical direction, and the snap-fit ​​strip 4 on the left side is inclined in the opposite direction to the snap-fit ​​strip 4 on the right side. This design forms an interlocking mechanism. When the upper and lower linings are fastened, the snap-fit ​​strip 4 slides into the snap-fit ​​groove 41 along the inclined surface and locks, which can simultaneously counteract the separation forces from different directions, effectively preventing the two from loosening or misaligning during handling and vibration.

[0029] For ease of operation, a pull part 5 is provided on the outer side of the lower liner 1 and the upper liner 2 at the end away from the insertion start (i.e., the rear end). The pull part 5 is integrally formed with the lower liner 1 and the upper liner 2, providing a firm point of force for removing the inner liner from the packaging box.

[0030] The method of using the liner is as follows: First, place the product in the receiving space of the lower liner 1; then, align the upper liner 2 with the lower liner 1 and fasten it, at which point insert the left and right side clips 4 into the corresponding slots 41 and lock them; next, align the inlet section 31 of the assembled liner structure with the opening of the packaging box, and apply a pushing force to smoothly insert the liner into the box until the support section 32 is in full contact with the box wall; when it needs to be removed, hook the rope or tool onto the pulling part 5 and apply force together to pull out the entire liner.

[0031] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the inventive concept, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A packaging box liner structure, comprising a lower liner (1) for supporting a product and an upper liner (2) for fastening with the lower liner (1), the lower liner (1) and the upper liner (2) together defining a receiving space for receiving the product, characterized in that: The outer surfaces of the lower liner (1) and the upper liner (2) are respectively provided with a plurality of protruding ribs (3), and the ribs (3) extend along the loading direction (X) of the inner liner structure into the packaging box. The rib (3) includes a connected inlet section (31) and a support section (32). The inlet section (31) is located at the end of the rib (3) near the starting point of the loading, and its outer surface forms a guide slope with a gradually decreasing cross-sectional size in the loading direction (X). The outer surface of the support section (32) is used to form a surface contact support with the inner wall of the packaging box after the inner lining structure is loaded into the packaging box.

2. The packaging box lining structure according to claim 1, characterized in that: Multiple ribs (3) are provided on the left side, right side and top surface of the lower liner (1) and upper liner (2).

3. The packaging box lining structure according to claim 1 or 2, characterized in that: The outer surfaces of the lower liner (1) and the upper liner (2) are provided with reinforcing ribs, and the extending direction of the reinforcing ribs intersects the insertion direction (X).

4. The packaging box lining structure according to claim 3, characterized in that: The ribs (3) on the left and right sides of the lower lining (1) and the upper lining (2) are respectively provided with snap-fit ​​structures. The snap-fit ​​structures include a snap strip (4) on one side and a snap groove (41) on the other side. The snap strip (4) and the snap groove (41) are adapted to each other and can be snapped together to restrict the relative movement of the lower lining (1) and the upper lining (2) in the snap-fit ​​state.

5. The packaging box lining structure according to claim 4, characterized in that: The extension direction of the card strip (4) is inclined relative to the vertical or horizontal direction.

6. The packaging box lining structure according to claim 5, characterized in that: The card bar (4) on the left side is tilted in the opposite direction to the card bar (4) on the right side.

7. The packaging box lining structure according to claim 1, characterized in that: Pulling parts (5) are provided on the outer side of the lower liner (1) and the upper liner (2) at the end away from the insertion start.

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