PACKAGING BOX WITH DISPLAY FUNCTION

Abstract

The present disclosure provides a packaging box with a display function. The packaging box includes an outer box, including an opening at one end along a first direction; and an inner box disposed inside the outer box in a drawable manner through the opening and being capable of flipping relative to the outer box in a fully pulled-out state, to switch from the fully pulled-out state to a display state.

Claims

1. A packaging box with a display function, comprising: an outer box, comprising an opening at one end along a first direction; and an inner box, disposed inside the outer box in a drawable manner through the opening and being capable of flipping relative to the outer box in a fully pulled-out state, to switch from the fully pulled-out state to a display state, wherein the inner box comprises an open side along a second direction and a first inner wall portion disposed opposite to the open side along the second direction, and the second direction intersects the first direction; the outer box comprises a first outer wall portion disposed away from the open side along the second direction and indented inward along the first direction relative to the opening, and in the display state, the first inner wall portion is configured to abut against the first outer wall portion; an additional layer plate is disposed on an outer side of the first inner wall portion facing away from the open side, and when the inner box is in a closed state, the additional layer plate is adjoined and flush with the first outer wall portion along the first direction.

2. The packaging box according to claim 1, wherein the additional layer plate comprises a concave portion recessed along the second direction from an outer surface of the additional layer plate facing away from the first inner wall portion.

3. The packaging box according to claim 1, wherein the inner box comprises a second inner wall portion and a third inner wall portion disposed opposite to each other along the first direction, and in the closed state, the third inner wall portion is configured to block at least a part of the opening; a side of the additional layer plate facing away from the first outer wall portion along the first direction is flush with the third inner wall portion.

4. The packaging box according to claim 1, wherein the inner box comprises a second inner wall portion and a third inner wall portion disposed opposite to each other along the first direction, and in the closed state, the third inner wall portion is configured to block at least a part of the opening; an outer surface of the second inner wall portion facing away from the third inner wall portion is formed as an arc-shaped surface which arches outward, the outer box comprises a second outer wall portion disposed opposite to the first outer wall portion along the second direction, and in the display state, the arc-shaped surface is configured to abut against the second outer wall portion.

5. The packaging box according to claim 1, wherein the inner box comprises a second inner wall portion and a third inner wall portion disposed opposite to each other along the first direction, and in the closed state, the third inner wall portion is configured to block at least a part of the opening; the third inner wall portion is provided with a recessed notch, which is recessed along the second direction from an edge of the third inner wall portion close to the open side.

6. The packaging box according to claim 1, wherein the inner box and the outer box are connected by a sliding mechanism, the sliding mechanism comprises a sliding rail and a slider, the sliding rail extends along the first direction, the slider is slidably connected to the sliding rail, the sliding rail is disposed on one of the inner box and the outer box, and the slider is disposed on the other one of the inner box and the outer box.

7. The packaging box according to claim 6, wherein the inner box comprises a second inner wall portion and a third inner wall portion disposed opposite to each other along the first direction, and two fourth inner wall portions disposed opposite to each other along a third direction, and in the closed state, the third inner wall portion is configured to block at least a part of the opening; the outer box comprises two third outer wall portions disposed opposite to each other along the third direction, and each two of the first direction, the second direction and the third direction intersect each other; the sliding rail is disposed on an inner side of one of the two third outer wall portions facing the inner box, and the slider is disposed on an end of one of the two fourth inner wall portions adjacent to the second inner wall portion.

8. The packaging box according to claim 7, wherein one of the two third outer wall portions comprises a first main plate and a first reinforcement plate, the first reinforcement plate is disposed on an inner side of the first main plate facing the inner box, and the sliding rail is disposed on the first reinforcement plate.

9. The packaging box according to claim 7, wherein one of the two fourth inner wall portions comprises a second main plate and a second reinforcement plate, and the second reinforcement plate is disposed on an inner side of the second main plate facing away from the outer box; the slider comprises a sliding part and a limiting part, the limiting part is disposed on the inner side of the second main plate, the sliding part is connected to the limiting part and protrudes out of the second main plate along the third direction, and the second reinforcement plate covers the limiting part along the third direction.

10. The packaging box according to claim 6, wherein the sliding rail is closed at an end adjacent to the opening along the first direction.

11. The packaging box according to claim 1, wherein the inner box is pivotally connected to the outer box in the fully pulled-out state.

12. The packaging box according to claim 1, wherein in the display state, the first inner wall portion is configured to abut against the first outer wall portion in an inclined manner, and the inner box is flipped from the fully pulled-out state to the display state with an obtuse angle.

13. The packaging box according to claim 1, wherein an outer surface of the first inner wall portion facing away from the open side is formed as a frosted or roughened surface.

14. The packaging box according to claim 4, wherein in the fully pulled-out state, the inner box is pivotally connected to the outer box at an end close to the third inner wall portion, and the arc-shaped surface of the third inner wall portion is configured to guide the flipping of the inner box.

15. The packaging box according to claim 6, wherein the sliding rail is disposed on the outer box, the slider is disposed on the inner box, and in the fully pulled-out state, the inner box is pivotally connected to the outer box through the slider.

16. The packaging box according to claim 1, wherein the packaging box is made of paper materials.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application, a brief introduction will be given below to the accompanying drawings required for use in the embodiments of the present application; the accompanying drawings described below relate to only some of the embodiments of the present application.

[0018] FIG. 1 is a schematic diagram of a packaging box provided in some embodiments of the present application.

[0019] FIG. 2 is a schematic diagram of the packaging box shown in FIG. 1 in another orientation.

[0020] FIG. 3 is a schematic diagram of an inner box of the packaging box shown in FIG. 1 in a fully pulled-out state.

[0021] FIG. 4 is a schematic diagram of the inner box of the packaging box shown in FIG. 2 in a fully pulled-out state.

[0022] FIG. 5 is a schematic diagram of the inner box of the packaging box shown in FIG. 2 in a display state.

[0023] FIG. 6 is an exploded schematic diagram of an outer box of the packaging box shown in FIG. 2.

[0024] FIG. 7 is an exploded schematic diagram of an inner box of the packaging box shown in FIG. 2.

[0025] Reference numerals in the accompanying drawings: packaging box 100, outer box 10, opening 11, first outer wall portion 12, second outer wall portion 13, third outer wall portion 14, first main plate 141, first reinforcement plate 142, inner box 20, open side 21, first inner wall portion 22, additional layer plate 23, concave portion 231, first side surface 232, second inner wall portion 24, arc-shaped surface 241, third inner wall portion 25, first surface 251, recessed notch 252, fourth inner wall portion 26, second main plate 261, second reinforcement plate 262, sliding rail 31, slider 32, sliding portion 321, limiting portion 322, first direction X, second direction Y, third direction Z.

DETAILED DESCRIPTION OF THE DISCLOSURE

[0026] The embodiments of the present application will be described in detail below; in order to make the embodiments of the present application clearer and more understandable, the present application will be further described in detail with reference to the accompanying drawings and specific embodiments. When referring to the accompanying drawings in the description below, unless otherwise indicated, the same numbers in different figures represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all the implementations consistent with the present application. On the contrary, they are only examples of devices and methods consistent with some embodiments of the present application as described in the appended claims.

[0027] It should be noted that in this article, the terms include, comprise or any other variation thereof are intended to encompass non-exclusive inclusion, and a process, method, article, or apparatus that includes a series of elements not only includes these elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus. Without further limitations, the element defined by the statement including a/an . . . does not exclude the existence of other identical elements in the process, method, article, or apparatus that includes that element; further, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings should be determined by their interpretation in the corresponding specific embodiment or by further combining with the context of the corresponding specific embodiment.

[0028] It should be understood that although the terms first, second, third, etc. may be used in this article to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this article, a first information can also be referred to as a second information, and similarly, a second information can also be referred to as a first information. Depending on the context, the word if used herein can be interpreted as when, or as or determine in response to . . . . Further, as used in this article, the singular forms a, an, and the are intended to include the plural form as well, unless the context indicates otherwise. The terms or, and/or used herein are interpreted as inclusive or imply any one or any combination. Therefore, A, B, or C or A, B, and/or C means any of the following: A; B; C; A and B; A and C; B and C; A, B and C. Exceptions to this definition only occur when a combination of components, functions, steps, or operations are inherently mutually exclusive in certain ways.

[0029] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0030] The following will provide a detailed description of the embodiments with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0031] Referring to FIGS. 1 to 7, an embodiment of the present application provides a packaging box 100 with a display function, which includes an outer box 10 and an inner box 20. The outer box 10 includes an opening 11 at one end along a first direction X. The inner box 20 is disposed inside the outer box 10 in a drawable manner through the opening 11, and the inner box 20 is capable of flipping relative to the outer box 10 in a fully pulled-out state, to switch from the fully pulled-out state to a display state. The inner box 20 includes an open side 21 along a second direction Y, and includes a first inner wall portion 22 disposed opposite to the open side 21 along the second direction Y, where the second direction Y intersects the first direction X. The outer box 10 includes a first outer wall portion 12, which is disposed away from the open side 21 along the second direction Y and is indented inward along the first direction X relative to the opening 11. In the display state, the first inner wall portion 22 abuts against the first outer wall portion 12. An additional layer plate 23 is disposed on an outer side of the first inner wall portion 22 facing away from the open side 21, and when the inner box 20 is in a closed state, the additional layer plate 23 is adjoined and flush with the first outer wall portion 12 along the first direction X.

[0032] The inner box 20 is similar in structure to a drawer. The inner box 20 can be pushed into the outer box 10 through the opening 11 or pulled out to the outside of the outer box 10. When the inner box 20 is in the closed state, an end of the inner box 20 that is close to the opening 11 is an outer end of the inner box 20, and an end that is far from the opening 11 is an inner end of the inner box 20. The outer end of the inner box 20 is formed as a pulling-out end that facilitates the pulling-out and flipping operation, while the inner end of the inner box 20 is formed as a pivot connection end that can be pivotally connected to the outer box 10.

[0033] The fully pulled-out state of the inner box 20 refers to a state when the inner box 20 is pulled out to a maximum distance from the outer box 10. In one embodiment, to facilitate the flipping of the inner box 20, the inner box 20 is not detached from the outer box 10 when it is in the fully pulled-out state while maintains a rotatable connection with the outer box 10. In other words, in the fully pulled-out state, the inner box 20 is pivotally connected to the outer box 10.

[0034] The open side 21 of the inner box 20 can be used for taking out, putting and displaying products. The first inner wall portion 22 is disposed opposite to the open side 21. Assuming that the open side 21 is at a top of the inner box 20, then the first inner wall portion 22 is a bottom wall of the inner box 20.

[0035] The first outer wall portion 12 is disposed away from the open side 21 along the second direction Y, as considered when the inner box 20 is in the closed state. When the inner box 20 is in the closed state, the first inner wall portion 22 and the first outer wall portion 12 are disposed adjacent and opposite to each other. In one embodiment, assuming that the first inner wall portion 22 is the bottom wall of the inner box 20, then the first outer wall portion 12 is a bottom wall of the outer box 10.

[0036] It should be noted that, unless specifically defined or described, orientations and positional relationships mentioned in the embodiments of the present application are based on the inner box 20 being in the closed state, and this will not be repeated in the following description.

[0037] The first outer wall portion 12 being indented inward along the first direction X relative to the opening 11, means that the first outer wall portion 12 is located on an inner side of the opening 11 along the first direction X and is spaced apart from the opening 11, forming a clearance space between the first outer wall portion 12 and the opening 11. Particularly, as shown in FIG. 6, the outer box 10 includes an end edge 111 at the opening 11, and the first outer wall portion 12 is indented inward along the first direction X relative to the end edge 111. In one embodiment, the first outer wall portion 12 is located on an inner side of the end edge 111 along the first direction X and is spaced apart from the end edge 111, forming a clearance space between the first outer wall portion 12 and the end edge 111.

[0038] In the closed state, the first inner wall portion 22 and the first outer wall portion 12 are disposed adjacent and opposite to each other. In the display state, the first inner wall portion 22 abuts against the first outer wall portion 12. To improve the stability of the inner box 20 in the display state and to provide a better product display view, the inner box 20 can be inclined relative to the second direction Y in the display state, that is, the first inner wall portion 22 abuts against the first outer wall portion 12 in an inclined manner, and the inner box 20 is flipped from the fully pulled-out state to the display state with an obtuse angle.

[0039] An outer surface of the first inner wall portion 22 facing away from the open side 21, may be a frosted or roughened surface, to enhance the stability of the first inner wall portion 22 abutting against the first outer wall portion 12, to improve the stability of the inner box 20 in the display state.

[0040] In the first direction X, the additional layer plate 23 can be disposed close to an outer end of the first inner wall portion 22 to match with the first outer wall portion 12. When the inner box 20 is in the closed state, the additional layer plate 23 is adjoined with the first outer wall portion 12 along the first direction X. In this case, the first outer wall portion 12 and the additional layer plate 23 can together form a side of the packaging box 100 along the second direction Y.

[0041] In some examples, an outer surface of the additional layer plate 23 is flush with an outer surface of the first outer wall portion 12. In some other examples, the additional layer plate 23 and the first outer wall portion 12 have the same thickness and are flush with each other entirely.

[0042] The additional layer plate 23 can be connected to the first inner wall portion 22 by adhesive or other suitable means.

[0043] The packaging box 100 provided by the embodiment of the present application includes the outer box 10 and the inner box 20 that is disposed inside the outer box 10 in a drawable manner through the opening 11 of the outer box 10. When the inner box 20 is in the closed state, the open side 21 of the inner box 20 is covered by the outer box 10 and can be used to store products; when the inner box is in the fully pulled-out state, the inner box 20 can be flipped relative to the outer box 10 to the display state, to display the product located inside the inner box 20. The first outer wall portion 12 of the outer box 10 is disposed away from the open side 21 of the inner box 20, and is indented inward relative to the opening 11 of the outer box 10, forming a clearance space on the inner side of the opening 11 to provide a clearance for the flipping of the inner box 20. As the inner box 20 flips, the first inner wall portion 22 can gradually move closer to the first outer wall portion 12 and finally abut against the first outer wall portion 12 in the display state; with the first outer wall portion 12 supporting the inner box 20 and restricting the inner box 20 from further flipping, the inner box 20 can be maintained stably in the display state.

[0044] The inventor recognizes that, to provide the clearance for the inner box 20, a side of the first outer wall portion 12 facing the opening 11 is spaced apart from the opening 11 to form the clearance space, which would create a step between the first outer wall portion 12 and the first inner wall portion 22 when the inner box 20 is closed. Therefore, the embodiment of the present application further provides the additional layer plate 23 on the outer side of the first inner wall portion 22 facing away from the open side 21, which is adjoined and flush with the first outer wall portion 12 when the inner box 20 is in the closed state, and fills up the above-described clearance space by the additional layer plate 23, to avoid a significant step from being formed between the inner box 20 and the outer box 10; this is beneficial for the inner box 20 and the outer box 10 to form a flush and integral entirety, and thus the exquisite appearance of the packaging box is guaranteed, and the sense of luxury and user experience are improved.

[0045] In some embodiments, the additional layer plate 23 includes a concave portion 231 recessed along the second direction Y from the outer surface of the additional layer plate 23 facing away from the first inner wall portion 22.

[0046] Exemplarily, the concave portion 231 is formed as a groove, and in the second direction Y, a depth of the concave portion 231 is less than the thickness of the additional layer plate 23.

[0047] As another example, the concave portion 231 is formed as a through-hole that extends through the additional layer plate 23 along the second direction Y.

[0048] By providing the concave portion 231 on the additional layer plate 23, the embodiment of the present application can provide an operating space for pulling out the inner box 20, to facilitate the user's operation to pull out the inner box 20.

[0049] In some embodiments, as referred to in FIGS. 1, 3, and 7, the inner box 20 includes a second inner wall portion 24 and a third inner wall portion 25 disposed opposite to each other along the first direction X, and in the closed state, the third inner wall portion 25 blocks at least a part of the opening 11. A side of the additional layer plate 23 facing away from the first outer wall portion 12 along the first direction X is flush with the third inner wall portion 25.

[0050] The first inner wall portion 22 is connected to the second inner wall portion 24 and the third inner wall portion 25 respectively at two ends opposite to each other along the first direction X. The third inner wall portion 25 can be an outer end wall of the inner box 20, and the second inner wall portion 24 can be an inner end wall of the inner box 20.

[0051] The additional layer plate 23 includes a first side surface 232 facing away from the first outer wall portion 12 along the first direction X, the third inner wall portion 25 includes a first surface 251 facing away from the second inner wall portion 24, and the first side surface 232 and the first surface 251 are flush with each other.

[0052] The embodiment of the present application arranges the side of the additional layer plate 23 facing away from the first outer wall portion 12 along the first direction X, to be flush with the third inner wall portion 25, and the additional layer plate 23 neither protrudes out of nor recesses into the third inner wall portion 25, to further improving the appearance effect and sense of luxury of the packaging box 100.

[0053] In some embodiments, with reference to FIGS. 1, 5, and 7, the inner box 20 includes a second inner wall portion 24 and a third inner wall portion 25 disposed opposite to each other along the first direction X, and in the closed state, the third inner wall portion 25 blocks at least a part of the opening 11. An outer surface of the second inner wall portion 24 facing away from the third inner wall portion 25 is formed as an arc-shaped surface 241 which arches outward, the outer box 10 includes a second outer wall portion 13 disposed opposite to the first outer wall portion 12 along the second direction Y, and in the display state, the arc-shaped surface 241 abuts against the second outer wall portion 13.

[0054] The second outer wall portion 13 includes an inner surface facing the first inner wall portion 22, and the arc-shaped surface 241 can abut against the inner surface of the second outer wall portion 13.

[0055] An inner surface of the second inner wall portion 24 facing the third inner wall portion 25 may be formed as a flat surface or an arc-shaped surface which recesses outward.

[0056] The second inner wall portion 24 may be a part formed by cutting a cylinder along a cutting plane parallel to an axial direction of the cylinder.

[0057] The second inner wall portion 24 may be a hollow structure with a hollow interior or a solid structure.

[0058] The inner box 20 includes two fourth inner wall portions 26 disposed opposite to each other along a third direction Z, and each two of the first direction X, the second direction Y, and the third direction Z intersect each other. In one embodiment, each two of the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0059] End surfaces of the two fourth inner wall portions 26 that are adjacent to the second inner wall portion 24 are also formed as arc-shaped surfaces, which have a same arc shape as that of the arc-shaped surface 241.

[0060] The second inner wall portion 24 is located at a pivot end of the inner box 20, and during the flipping process of the inner box 20, the arc-shaped surface 241 can serve as an arc-shaped guiding role to some extent, improving the smoothness of the flipping of the inner box 20. After the inner box 20 is flipped to the display state, the arc-shaped surface 241 as a whole abuts against the second outer wall portion 13, which increases the contact area between the inner box 20 and the outer box 10, to enhance the stability of the inner box 20 in the display state.

[0061] In some embodiments, with reference to FIGS. 3 and 4, the inner box 20 includes a second inner wall portion 24 and a third inner wall portion 25 disposed opposite to each other along the first direction X, and in the closed state, the third inner wall portion 25 blocks at least a part of the opening 11. The third inner wall portion 25 is provided with a recessed notch 252, which is recessed along the second direction Y from an edge of the third inner wall portion 25 close to the open side 21.

[0062] The recessed notch 252 can be formed in a shape of a trapezoid, an inverted trapezoid, a square, an arc, or in other aesthetically pleasing shapes.

[0063] In the second direction Y, a depth of the recessed notch 252 can be less than or equal to a height of the third inner wall portion 25.

[0064] The third inner wall portion 25 is located at the outer end of the inner box 20, that is, the pulling-out end of the inner box 20; by providing the recessed notch 252 in the third inner wall portion 25, it not only facilitates the pulling out of the inner box 20 but also facilitates to take out products from and put products into the inner box 20, to improve the convenience of operation.

[0065] In some embodiments, as shown in FIGS. 6 and 7, the inner box 20 and the outer box 10 are connected by a sliding mechanism, which includes a sliding rail 31 and a slider 32; the sliding rail 31 extends along the first direction X, and the slider 32 is slidably connected to the sliding rail 31; the sliding rail 31 is disposed on one of the inner box 20 and the outer box 10, and the slider 32 is disposed on the other one of the inner box 20 and the outer box 10.

[0066] The slider 32 can be inserted into the sliding rail 31 and is slidable along the first direction X on the sliding rail 31.

[0067] The number of sliding rails 31 and sliders 32 can each be one or multiple, and multiple sliders 32 and multiple sliding rails 31 can be matched and connected in one-to-one manner.

[0068] The embodiment of the present application connects the inner box 20 and the outer box 10 through the sliding mechanism, which not only provides a simple structure and assembly, but also provides a reliable connection between the slider 32 and the sliding rail 31, and it is less likely for the slider 32 to detach from the sliding rail 31.

[0069] In some embodiments, as shown in FIGS. 6 and 7, the inner box 20 includes a second inner wall portion 24 and a third inner wall portion 25 disposed opposite to each other along the first direction X, as well as two fourth inner wall portions 26 disposed opposite to each other along the third direction Z, and in the closed state, the third inner wall portion 25 blocks at least a part of the opening 11. The outer box 10 includes two third outer wall portions 14 disposed opposite to each other along the third direction Z, and each two of the first direction X, the second direction Y, and the third direction Z intersect each other. The sliding rail 31 is disposed on an inner side of the third outer wall portion 14 facing the inner box 20, and the slider 32 is disposed on an end of the fourth inner wall portion 26 adjacent to the second inner wall portion 24.

[0070] In one embodiment, each two of the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0071] The two fourth inner wall portions 26 may be parallel to each other. The two third outer wall portions 14 may be parallel to each other.

[0072] The third outer wall portion 14 and fourth inner wall portion 26 adjacent each other may be parallel to each other.

[0073] In the first direction X, the second outer wall portion 13 has a same dimension as the third outer wall portion 14, and the first outer wall portion 12 has a dimension smaller than that of the second outer wall portion 13 and the third outer wall portion 14. The first outer wall portion 12 is indented in a direction away from the opening 11 relative to the second outer wall portion 13 and the third outer wall portion 14.

[0074] At least part of the slider 32 may protrude outward from the fourth inner wall portion 26 to facilitate its slidable connection with the sliding rail 31.

[0075] Two sliding rails 31 and two sliders 32 are provided, the two sliding rails 31 are respectively disposed on the inner sides of the two third outer wall portions 14, and the two sliders 32 are respectively disposed on the fourth inner wall portions 26. The two sliders 32 are respectively matched with the two sliding rails 31, to limit a movement distance of the slider 32 in the third direction Z, to reduce the possibility of the slider 32 detaching from the sliding rail 31.

[0076] The sliding rail 31 is disposed on the outer box 10, and the slider 32 is disposed on the inner end of the inner box 20; when the inner box 20 is in any partially or fully pulled-out state and the display state, both the sliding rail 31 and the slider 32 can be hidden inside the outer box 10 and will not be exposed, which further improves the appearance effect. In one embodiment, when the inner box 20 is in the fully pulled-out state, the slider 32 can serve as a pivotal shaft for the inner box 20, allowing the inner box 20 to flip around the slider 32 to the display state; such structural design is simple and clever, and the flipping of the inner box 20 is relatively smooth.

[0077] In some embodiments, as shown in FIG. 6, the third outer wall portion 14 includes a first main plate 141 and a first reinforcement plate 142, the first reinforcement plate 142 is disposed on an inner side of the first main plate 141 facing the inner box 20, and the sliding rail 31 is disposed on the first reinforcement plate 142.

[0078] The first main plate 141 and the first reinforcement plate 142 are stacked with each other along the third direction Z, and are both arranged with their thickness direction in the third direction Z.

[0079] The first main plate 141 and the first reinforcement plate 142 can be connected by adhesive or any other suitable manner.

[0080] The sliding rail 31 can be formed as a strip-shaped recess disposed on an inner side of the first reinforcement plate 142, or it can be a strip-shaped hole that extends through the first reinforcement plate 142 along the third direction Z.

[0081] The embodiment of the present application configures the third outer wall portion 14 as a double-layered plate, which improves the structural strength of the third outer wall portion 14 and reduces the possibility of deformation of the third outer wall portion 14 caused by repeated pulling of the inner box 20. In one embodiment, by providing the sliding rail 31 on the first reinforcement plate 142, the sliding rail 31 can be formed on the first reinforcement plate 142 before the first reinforcement plate 142 is connected to the inner side of the first main board 141, which lowers the difficulty of formation of the sliding rail 31.

[0082] In some embodiments, as shown in FIG. 7, the fourth inner wall portion 26 includes a second main plate 261 and a second reinforcement plate 262, the second reinforcement plate 262 is disposed on an inner side of the second main plate 261 facing away from the outer box 10. The slider 32 includes a sliding part 321 and a limiting part 322, the limiting part 322 is disposed on an inner side of the second main plate 261, the sliding part 321 is connected to the limiting part 322 and protrudes out of the second main plate 261 along the third direction Z, and the second reinforcement plate 262 covers the limiting part 322 along the third direction Z.

[0083] The second main plate 261 and the second reinforcement plate 262 are stacked with each other along the third direction Z, and are both arranged with their thickness direction in the third direction Z.

[0084] The second main plate 261 and the second reinforcement plate 262 can be connected by adhesive or any other suitable manner.

[0085] The second main plate 261 is provided with a through-hole, and the sliding part 321 passes through the through-hole and protrudes out of the second main plate 261.

[0086] In one embodiment, the sliding part 321 is a cylindrical structure.

[0087] The limiting part 322 can be attached to an inner surface of the second main plate 261, and has a size larger than that of the through-hole on the second main plate 261, and the limiting part 322 can be restricted from moving outward through the through-hole.

[0088] The limiting part 322 can be connected to the second main plate 261 by adhesive or any other suitable manner.

[0089] The second reinforcement plate 262 has a size at least greater than that of the limiting part 322 to cover the limiting part 322. In one embodiment, the second reinforcement plate 262 matches the second main plate 261 in shape and size.

[0090] The second reinforcement plate 262 may be connected to the second main plate 261 by adhesive or any other suitable manner.

[0091] The embodiment of the present application configures the fourth inner wall portion 26 as a double-layered plate, which improves the structural strength of the fourth inner wall portion 26 and reduces the possibility of deformation of the fourth inner wall portion 26 caused by repeated pulling of the inner box 20. In one embodiment, the limiting part 322 of the slider 32 is disposed between the second main plate 261 and the second reinforcement plate 262, which prevents the slider 32 from falling off to the outside of the inner box 20 by the abutting of the limiting part 322 against the second main plate 261, and prevents the slider 32 from falling into the inner box 20 by the covering of the second reinforcement plate 262 on the limiting part 322, to improve the stability of the slider 32 on the inner box 20.

[0092] In some embodiments, the sliding rail 31 is closed at an end adjacent to the opening 11 along the first direction X. In other words, the end of the sliding rail 31 adjacent to the opening 11 is located on an inner side of the opening 11.

[0093] In one embodiment, the sliding rail 31 is disposed on the third outer wall portion 14, and the sliding rail 31 does not extend through the third outer wall portion 14 along the first direction X.

[0094] In one embodiment, the sliding rail 31 is closed at the other end away from the opening 11 along the first direction X, and thus a maximum distance of the slider 32 sliding inward can be limited, which reduces a collision between the inner box 20 and the outer box 10 during a closing process of the inner box 20.

[0095] The embodiment of the present application configures the end of the sliding rail 31 adjacent to the opening 11 along the first direction X to be closed, to limit the maximum distance of the slider 32 sliding outward. In one embodiment, when the slider 32 is slid to the end of the sliding rail 31 adjacent to the opening 11 along the first direction X, the slider 32 can abut against said end of the sliding rail 31 and be restricted from continuing to slide, and thus the slider 32 can be prevented from slipping out of the sliding rail 31, which could cause the inner box 20 and the outer box 10 to completely detach from each other.

[0096] In some embodiments, the packaging box 100 is made of paper.

[0097] In one embodiment, all parts of the packaging box 100, such as the inner box 20, the outer box 10, and the sliding mechanism, are made of paper.

[0098] The packaging box 100 of the embodiment of the present application are made of all-paper materials, which, compared to materials like metal and plastic, are lightweight, easy to carry, have a simple production process, significantly reduce environmental pollution, and are completely biodegradable. Moreover, paper materials are easy to recycle, have a high utilization rate, and are environmentally friendly.

[0099] The above are only the specific embodiments of the present application, and the scope of the present application is not limited to above. Various equivalent modifications or substitutions within the scope disclosed in the present application, and these modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.