Box body and packaging box

Abstract

The utility model relates to a box body and a packaging box. The box body comprises at least two sub-box parts. A containing space with an opening is defined by the at least two sub-box parts. Any two adjacent sub-box parts are connected in a sliding mode. The at least two sub-box parts slide relative to each other so as to adjust the volume of the accommodating space. In any two adjacent sub-box parts, one is provided with a receiving side plate, and the other is provided with a butt joint side plate. The receiving side plate comprises an insertion cavity and a limiting hole communicated with the insertion cavity. The butt joint side plate comprises a limiting clamping tongue matched with the limiting hole. The butt joint side plate is inserted into the insertion cavity so as to be slidably connected with the receiving side plate. When the butt joint side plate slides relative to the receiving side plate and is pulled out to a limit position, the limiting clamping tongue is inserted into the limiting hole, and the volume of the containing space is maximum. When the butt joint side plate slides away from the limiting position relative to the receiving side plate, the limiting clamping tongue retreats from the limiting hole and enters the insertion cavity, and the size of the containing space is reduced. According to the box body, the overall size of the box body and the size of the containing space can be flexibly changed.

Description

Technical Field

[0001] The present application relates to the field of packaging technology, and in particular to a box body and a packaging box. Background Art

[0002] In the current packaging industry, packaging boxes, as an important tool for product protection and transportation, have always received extensive attention for their design and use. However, traditional packaging boxes usually adopt a fixed-size design and cannot flexibly adapt to products of different sizes, which greatly limits the scope of use of packaging boxes. Utility Model Content

[0003] The embodiment of the present application provides a box body and a packaging box, which can flexibly change its overall size and the volume of the accommodating space, so that it can flexibly adapt to products of different sizes, improve space utilization, and at the same time can be reused, which is conducive to reducing costs.

[0004] On the one hand, according to an embodiment of the present application, a box body is provided, which includes at least two sub-box parts. At least two sub-box parts are enclosed to form a storage space with an opening. Any two adjacent sub-box parts can be slidably connected. At least two sub-box parts slide with each other to adjust the volume of the storage space. Among them, among any two adjacent sub-box parts, one has a receiving side plate and the other has a docking side plate. The receiving side plate includes an insertion cavity and a limiting hole connected to the insertion cavity. The docking side plate includes a limiting tongue that matches the limiting hole. The docking side plate is inserted into the insertion cavity to be slidably connected with the receiving side plate. When the docking side plate slides out to the limit position relative to the receiving side plate, the limiting tongue is inserted into the limiting hole, and the volume of the storage space is maximized. When the docking side plate slides away from the limit position relative to the receiving side plate, the limiting tongue withdraws from the limiting hole into the insertion cavity, and the volume of the storage space becomes smaller.

[0005] The box body of the embodiment of the present application includes at least two sub-box parts. At least two sub-box parts are enclosed to form a storage space for holding the product to be packaged. The sub-box parts can slide with each other to adjust the volume of the storage space and adjust the overall size of the box body at the same time. If the overall size of the box body increases, the volume of the storage space increases. If the overall size of the box body decreases, the volume of the storage space decreases. According to the size of the product to be packaged, the volume of the storage space of the box body can be adjusted to a suitable size, so that after the product is placed in the box body, the storage space of the box body will not have a large amount of surplus space. Therefore, the box body of the embodiment of the present application can flexibly change its overall size and the volume of the storage space, so that it can flexibly adapt to products of different sizes, improve space utilization, and can be reused, which is conducive to reducing costs. In addition, of any two adjacent sub-box parts, one has a receiving side plate and the other has a docking side plate. The receiving side plate has a limiting hole, and the corresponding docking side plate has a limiting tongue. When the docking side plate slides out to the limit position relative to the receiving side plate, the limiting tongue can be inserted into the limiting hole. After the limiting tongue is inserted into the limiting hole, the limiting tongue is constrained by the receiving side plate, so that the docking side plate cannot be further withdrawn from the receiving side plate, which can help prevent the docking side plate from being completely withdrawn from the plug-in cavity, and help reduce the possibility of the box body falling apart due to the separation of the docking side plate and the receiving side plate, thereby ensuring the structural integrity of the box body during use, and helping to reduce the possibility of the product falling off or being lost from the box body.

[0006] In some practicable embodiments, a limiting hole on the receiving side plate is disposed near the opening, and a limiting tongue is disposed at an end of the mating side plate near the opening.

[0007] In some achievable embodiments, the receiving side plate includes an inner plate and an outer plate, the plug-in cavity is located between the inner plate and the outer plate, the inner plate is provided with a limiting hole, and the limiting tongue is provided facing the accommodating space.

[0008] In some feasible embodiments, the sub-box portion includes a bottom plate, the opening is arranged corresponding to the bottom plate, the bottom plate connected to the receiving side plate is provided with a connecting hole, the inner side plate includes a connecting piece, the connecting piece is inserted into the connecting hole, and the connecting piece is connected to the bottom plate.

[0009] In some feasible embodiments, there is a sliding fit gap between the inner side plate and the bottom plate, the plug-in cavity is connected to the sliding fit gap, and the sliding fit gap is arranged corresponding to the connecting piece along the sliding direction of the docking side plate. One of any two adjacent sub-box parts has a sliding fit gap, and the bottom plate edge of the other is slidably connected to the sliding fit gap.

[0010] In some feasible embodiments, one of any two adjacent sub-box parts has a sliding fit gap, the edge of the bottom plate of the other one is slidably connected to the sliding fit gap and the bottom plate has an avoidance gap, and the avoidance gap is arranged corresponding to the connecting piece along the sliding direction of the docking side plate, the docking side plate and the receiving side plate slide relative to each other, and the connecting piece is inserted into or withdrawn from the avoidance gap.

[0011] In some feasible embodiments, the docking side panel includes a docking plate body and a wing plate, the docking plate body is inserted into the insertion cavity to be slidably connected to the receiving side panel, the docking plate body has a positioning groove, the wing plate is connected to the docking plate body, along the sliding direction of the docking side panel, the wing plate is folded toward the positioning groove and the wing plate is clamped in the positioning groove, the part of the wing plate passing through the positioning groove forms a limiting tongue, and the limiting tongue is located on the side of the docking plate body facing the accommodating space.

[0012] In some feasible embodiments, the sub-box portion includes a bottom plate, the opening is arranged corresponding to the bottom plate, the bottom plates of each sub-box portion are stacked, and along the depth direction of the accommodating space, the orthographic projections of each bottom plate have an overlapping area, and at least two sub-box portions slide with each other to adjust the area of ​​the overlapping area.

[0013] In some achievable embodiments, the box body includes more than three sub-box parts, and each receiving side plate and each docking side plate in the more than three sub-box parts encloses and forms a receiving space.

[0014] In some achievable manners, among the three or more sub-box parts, each sub-box part includes a receiving side plate and a docking side plate. Alternatively, among the three or more sub-box parts, at least one sub-box part includes two receiving side plates, and at least one sub-box part includes two docking side plates, and the remaining sub-box parts each include one receiving side plate and one docking side plate.

[0015] In some achievable embodiments, the box body includes four sub-box parts, among which one sub-box part includes two mutually perpendicular receiving side panels, one sub-box part includes two mutually perpendicular docking side panels, and the other two sub-box parts each include a mutually perpendicular receiving side panel and a docking side panel, and the four sub-box parts form a rectangular structure.

[0016] On the other hand, according to an embodiment of the present application, there is provided a packaging box, which includes an inner box and an outer box that are interlocked, and both the inner box and the outer box are the box bodies as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the partial structure of the box body of an embodiment of the present application;

[0019] Figure 2is a schematic diagram of a partial exploded structure of a box body according to an embodiment of the present application;

[0020] Figure 3 It is a partial structural schematic diagram of the sub-box part of an embodiment of the present application;

[0021] Figure 4 It is a partial structural schematic diagram of the sub-box part of an embodiment of the present application;

[0022] Figure 5 It is a schematic diagram of the partial structure of the box body of an embodiment of the present application;

[0023] Figure 6 It is a partial structural schematic diagram of the sub-box part of an embodiment of the present application;

[0024] Figure 7 It is a schematic diagram of the partial structure of the box body of an embodiment of the present application;

[0025] Figure 8 is a schematic diagram of the structure of the first sub-box portion of the embodiment of the present application in a flat state;

[0026] Fig. 9 is a schematic diagram of the molding process of the first sub-box portion of an embodiment of the present application;

[0027] Fig.10 is a schematic diagram of the structure of the second sub-box portion of the embodiment of the present application in a flat state;

[0028] Fig.11 is a schematic diagram of the molding process of the second sub-box portion of an embodiment of the present application;

[0029] Fig.12 is a schematic diagram of the structure of the third sub-box portion of the embodiment of the present application in a flat state;

[0030] Fig.13 is a schematic diagram of the molding process of the third sub-box portion of the embodiment of the present application;

[0031] Fig.14 is a schematic diagram of the structure of the fourth sub-box portion of the embodiment of the present application in a flat state;

[0032] Fig.15 is a schematic diagram of the molding process of the fourth sub-box portion of the embodiment of the present application;

[0033] Fig.16 It is a schematic diagram of the partial structure of the packaging box of an embodiment of the present application.

[0034] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale.

[0035] Description of reference numerals:

[0036] 10. Box body; 11. Accommodating space;

[0037] 20. Sub-box section;

[0038] 30, receiving side plate; 301, plug-in cavity; 302, limiting hole;

[0039] 31. inner plate; 311. connecting piece; 32. outer plate;

[0040] 40, docking side plate; 401, limiting tongue; 41, docking plate body; 411, positioning groove; 42, wing plate;

[0041] 50. bottom plate; 51. connection hole; 52. avoidance gap; 53. rounded corner; 54. inclined inner wall surface;

[0042] 60. Sliding fit clearance;

[0043] 70. Handle position;

[0044] 80. Transition plate;

[0045] 90. Tongue insertion;

[0046] 100, jack;

[0047] 101, first sub-box portion;

[0048] 102, second sub-box portion;

[0049] 103, the third sub-box;

[0050] 104, the fourth sub-box;

[0051] 200. Packing box;

[0052] X, first direction;

[0053] Y, second direction;

[0054] Z, depth direction. DETAILED DESCRIPTION

[0055] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0056] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0057] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0058] The directional descriptions appearing in the following descriptions do not limit the specific structure of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0059] In the related art, the size of the packaging box is usually designed to be fixed, that is, the size of the packaging box after processing and manufacturing is no longer changed. When packaging products of different sizes in a fixed-size packaging box, after a relatively small product is placed in the packaging box, there will be a lot of excess space in the packaging box, which not only increases the amount of packaging materials used, but also leads to an increase in packaging costs. In addition, in order to prevent the product from shaking in the packaging box, additional fillers need to be used to fill the excess space, which further increases the cost, and the fillers will have adverse effects on the environment.

[0060] With the increasing number of product types on the market, the demand for packaging of products of different sizes is also showing a diversified trend. Traditional fixed-size packaging boxes are difficult to meet such diverse needs, resulting in the need to frequently change packaging boxes of different sizes during production and use, increasing the complexity of packaging box production and management.

[0061] For fixed-size packaging boxes, there are also limitations in terms of reuse. If the size of the packaging box does not match the size of the product to be packaged, the packaging box loses its value for reuse, resulting in the packaging box being discarded, which not only wastes resources but also increases the burden on the environment.

[0062] Therefore, the existing packaging boxes meet the packaging needs to a certain extent, but there is still room for improvement in terms of space utilization, cost saving and reuse.

[0063] The box body of the embodiment of the present application can be used to accommodate products to be packaged. The box body has a storage space. The storage space can be used to hold products to be packaged. The box body includes sub-box parts that can slide against each other. The volume of the storage space can be adjusted by pulling out the sub-box parts. Therefore, the box body of the embodiment of the present application can flexibly change its overall size and the volume of the storage space, so that it can flexibly adapt to products of different sizes, improve space utilization, and can be reused, which is conducive to reducing costs.

[0064] Figure 1 The partial structure of the box body 10 is schematically shown. Figure 2 The partially exploded structure of the box body 10 is schematically shown. Figure 1 and Figure 2 As shown, the box body 10 of the embodiment of the present application includes at least two sub-box parts 20. At least two sub-box parts 20 enclose a receiving space 11 with an opening. Exemplarily, the receiving space 11 of the box body 10 may have an opening. The product to be packaged may be placed in the receiving space 11 through the opening. Any two adjacent sub-box parts 20 may be slidably connected. At least two sub-box parts 20 slide with each other to adjust the volume of the receiving space 11 of the box body 10.

[0065] For example, when compressive stress is applied to two adjacent sub-box parts 20 , the two adjacent sub-box parts 20 can slide relative to each other, so as to reduce the overall size of the box body 10 and the volume of the accommodating space 11 .

[0066] Exemplarily, when tensile stress is applied to two adjacent sub-box parts 20 , the two adjacent sub-box parts 20 can slide relative to each other, so as to increase the overall size of the box body 10 and simultaneously increase the volume of the accommodating space 11 .

[0067] Figure 3 The partial structure of the sub-box portion 20 is schematically shown. Figure 4 The partial structure of the sub-box portion 20 is schematically shown. Figure 1 , Figure 3 and Figure 4As shown, in any two adjacent sub-box parts 20 of the box body 10 of the embodiment of the present application, one has a receiving side plate 30, and the other has a docking side plate 40. The adjacent receiving side plates 30 and the docking side plates 40 are slidably connected. For the adjacent receiving side plates 30 and the docking side plates 40, the receiving side plate 30 includes an insertion cavity 301 and a limiting hole 302 connected to the insertion cavity 301, and the docking side plate 40 includes a limiting tongue 401 matched with the limiting hole 302.

[0068] The docking side plate 40 is inserted into the insertion cavity 301 to achieve a slidable connection with the receiving side plate 30. The docking side plate 40 can be operated to slide relative to the receiving side plate 30 in a push-pull manner to adjust the size of the docking side plate 40 inserted into the receiving side plate 30.

[0069] Figure 1 In the embodiment, the docking side plate 40 slides out relative to the receiving side plate 30 to the limit position. When the docking side plate 40 slides out relative to the receiving side plate 30 to the limit position, the limiting tongue 401 can be inserted into the limiting hole 302. At this time, the overall size of the box body 10 is the largest, and the volume of the accommodating space 11 of the box body 10 is the largest. When the limiting tongue 401 is inserted into the limiting hole 302, the limiting tongue 401 will be constrained by the limiting of the receiving side plate 30, so that the docking side plate 40 cannot be further withdrawn from the receiving side plate 30, which can help prevent the docking side plate 40 from completely withdrawing from the insertion cavity 301, and help reduce the possibility of the box body 10 falling apart due to the separation of the docking side plate 40 and the receiving side plate 30.

[0070] A compressive stress is applied to the docking side plate 40 toward the receiving side plate 30, so that when the docking side plate 40 slides away from the limit position relative to the receiving side plate 30, the limiting tongue 401 withdraws from the limiting hole 302 and enters the plug-in cavity 301 of the receiving side plate 30, and the overall size of the box body 10 is reduced, and the volume of the accommodating space 11 of the box body 10 is reduced. When the docking side plate 40 slides away from the limit position relative to the receiving side plate 30, the receiving side plate 30 can apply a compressive stress to the limiting tongue 401, so that the limiting tongue 401 can enter the plug-in cavity 301 of the receiving side plate 30 relatively easily.

[0071] The box body 10 of the embodiment of the present application includes at least two sub-box parts 20. At least two sub-box parts 20 are enclosed to form a storage space 11 for holding the product to be packaged. Each sub-box part 20 can slide with each other to adjust the volume of the storage space 11 and adjust the overall size of the box body 10 at the same time. If the overall size of the box body 10 becomes larger, the volume of the storage space 11 becomes larger. If the overall size of the box body 10 becomes smaller, the volume of the storage space 11 becomes smaller. According to the size of the product to be packaged, the volume of the storage space 11 of the box body 10 can be adjusted to a matching size, so that after the product is placed in the box body 10, the storage space 11 of the box body 10 will not have a large amount of space left. Therefore, the box body 10 of the embodiment of the present application can flexibly change its overall size and the volume of the storage space 11, so that it can flexibly adapt to products of different sizes, improve space utilization, and can be reused, which is conducive to reducing costs. In addition, of any two adjacent sub-box parts 20, one has a receiving side plate 30 and the other has a docking side plate 40. The receiving side plate 30 has a limiting hole 302, and the corresponding docking side plate 40 has a limiting tongue 401. When the docking side plate 40 slides out to the limit position relative to the receiving side plate 30, the limiting tongue 401 can be inserted into the limiting hole 302. After the limiting tongue 401 is inserted into the limiting hole 302, the limiting tongue 401 is constrained by the limiting of the receiving side plate 30, so that the docking side plate 40 cannot be further withdrawn from the receiving side plate 30, which can help prevent the docking side plate 40 from completely withdrawing from the insertion cavity 301, help reduce the possibility of the box body 10 being scattered due to the separation of the docking side plate 40 and the receiving side plate 30, ensure the structural integrity of the box body 10 during use, and help reduce the possibility of the product falling off and being lost from the box body 10.

[0072] In some achievable ways, the limiting tongue 401 provided on the docking side plate 40 is elastic. When the limiting tongue 401 is acted upon by an external force, it can change its own state and accumulate elastic potential energy. When the external force disappears, the limiting tongue 401 can release the elastic potential energy to restore its original state. When the limiting tongue 401 of the docking side plate 40 is engaged in the limiting hole 302 of the receiving side plate 30, the limiting tongue 401 can be in an initial state. When the docking side plate 40 is pushed to slide into the receiving side plate 30, the limiting tongue 401 moves into the plug-in cavity 301, and at this time the receiving side plate 30 can apply compressive stress to the limiting tongue 401, so that the limiting tongue 401 changes its own state and accumulates elastic potential energy. When the docking side plate 40 is pulled to slide outside the receiving side plate 30 and the limiting tongue 401 corresponds to the limiting hole 302 again, the limiting tongue 401 can release elastic potential energy to restore the original state, so that the limiting tongue 401 is re-engaged in the limiting hole 302.

[0073] In some achievable embodiments, the limiting hole 302 on the receiving side panel 30 is disposed near the opening of the accommodating space 11. A limiting latch 401 is disposed at the end of the docking side panel 40 near the opening of the accommodating space 11. When the product to be packaged is placed in the box body 10, the product usually occupies the lower half of the accommodating space 11. The limiting hole 302 is disposed near the opening to help avoid the product to be packaged, so that when the limiting latch 401 reaches the limiting hole 302, the limiting latch 401 can be smoothly inserted into the limiting hole 302, which helps to reduce the possibility that the limiting latch 401 is blocked by the product to be packaged and cannot be smoothly inserted into the limiting hole 302, thereby causing the docking side panel 40 to separate from the receiving side panel 30.

[0074] In some examples, along the sliding direction of the docking side plate 40, the limiting hole 302 on the receiving side plate 30 is arranged close to the plug interface of the plug cavity 301, and the insertion end of the docking side plate 40 is provided with a limiting tongue 401. The sliding direction of the docking side plate 40 is perpendicular to the depth direction Z of the accommodating space 11. Exemplarily, the number of the limiting hole 302 provided on the receiving side plate 30 can be one. The number of the limiting tongue 401 provided on the docking side plate 40 can be one.

[0075] For some examples, see Figure 2 and Figure 3 As shown, the receiving side plate 30 includes an inner plate 31 and an outer plate 32. In a direction perpendicular to the depth direction Z of the accommodating space 11, the inner plate 31 and the outer plate 32 are spaced apart. The plug-in cavity 301 of the receiving side plate 30 is located between the inner plate 31 and the outer plate 32. The docking side plate 40 is plugged between the inner plate 31 and the outer plate 32. The inner plate 31 is provided with a limiting hole 302. The limiting tongue 401 of the docking side plate 40 is arranged facing the accommodating space 11. When the limiting tongue 401 is matched with the limiting hole 302, a part of the limiting tongue 401 can pass through the limiting hole 302 and extend into the accommodating space 11, so that a stable locking state can be formed between the receiving side plate 30 and the limiting tongue 401.

[0076] In the scenario where multiple box bodies 10 are arranged side by side, in order to improve space utilization, the outer side plate 32 of the receiving side plate 30 of one box body 10 can be in contact with the outer side plate 32 of the receiving side plate 30 of another box body 10. If the outer side plate 32 is provided with a limiting hole 302, there is a situation where the adjacent outer side plate 32 blocks the limiting hole 302, so that the limiting tongue 401 is blocked by the adjacent outer side plate 32 and cannot be smoothly inserted into the limiting hole 302, resulting in the possibility of separation of the docking side plate 40 and the receiving side plate 30. In the mode where the limiting hole 302 is provided on the inner side plate 31, the limiting tongue 401 can be smoothly inserted into the limiting hole 302 to lock the docking side plate 40, which is conducive to avoiding the above-mentioned problem.

[0077] For some examples, see Figure 3 and Figure 4 As shown, in the box body 10 of the embodiment of the present application, the sub-box part 20 includes a bottom plate 50. Along the depth direction Z of the accommodating space 11, the opening of the accommodating space 11 is arranged corresponding to the bottom plate 50. The bottom plates 50 of each sub-box part 20 can be spliced ​​to form the entire bottom of the box body 10. The bottom plates 50 of each sub-box part 20 are used to carry the products to be packaged. The bottom plate 50 connected to the receiving side plate 30 on the sub-box part 20 is provided with a connecting hole, that is, the bottom plate 50 of the sub-box part 20 with the receiving side plate 30 is provided with a connecting hole. The inner side plate 31 of the receiving side plate 30 includes a connecting piece 311. The connecting piece 311 is plugged into the connecting hole. The connecting piece 311 is connected to the bottom plate 50, so that the inner side plate 31 can be fixed to prevent the inner side plate 31 from warping.

[0078] Exemplarily, after the connecting piece 311 of the inner side plate 31 passes through the connecting hole of the corresponding bottom plate 50, at least a portion of the connecting piece 311 is folded, thereby facilitating the problem of the connecting piece 311 being pulled out of the connecting hole. For example, after the connecting piece 311 of the inner side plate 31 passes through the connecting hole of the corresponding bottom plate 50, at least a portion of the connecting piece 311 can be folded 90 degrees.

[0079] Exemplarily, the insertion cavity 301 of the receiving side plate 30 has an insertion port. The docking side plate 40 is inserted into the insertion cavity 301 through the insertion port. Along the sliding direction of the docking side plate 40, the connecting piece 311 of the inner side plate 31 is arranged away from the insertion port of the receiving side plate 30.

[0080] In some examples, Figure 5 The partial structure of the box body 10 is schematically shown. Figure 5 In the embodiment, the size of the box body 10 is minimized. Figure 3 , Figure 4 and Figure 5As shown, there is a sliding fit gap 60 between the inner side plate 31 of the receiving side plate 30 and the bottom plate 50. The insertion cavity 301 of the receiving side plate 30 is connected to the sliding fit gap 60. Along the sliding direction of the docking side plate 40, the sliding fit gap 60 is arranged corresponding to the connecting piece 311. The sliding fit gap 60 refers to the gap that is slidably connected with other structural members. The setting of the sliding fit gap 60 corresponding to the connecting piece 311 means that the sliding fit gap 60 and the connecting piece 311 are arranged side by side in the sliding direction of the docking side plate 40. Among any two adjacent sub-box parts 20, one has a sliding fit gap 60, and the edge of the bottom plate 50 of the other is slidably connected to the sliding fit gap 60. Among any two adjacent sub-box parts 20, the inner side plate 31 of one can avoid the bottom plate 50 of the other through the sliding fit gap 60 to ensure that the two sub-box parts 20 can smoothly achieve relative sliding. When any two adjacent sub-box parts 20 slide against each other, the edge of the bottom plate 50 of one will slide along the sliding fit gap 60 of the other.

[0081] Exemplarily, the insertion port of the insertion cavity 301 is communicated with the insertion port of the sliding fit gap 60 . In the sliding direction of the mating side plate 40 , the size of the sliding fit gap 60 is larger than the size of the connecting piece 311 .

[0082] In some examples, Figure 6 The partial structure of the sub-box portion 20 is schematically shown. Figure 3 , Figure 5 and Figure 6 As shown, of any two adjacent sub-box parts 20, one has a sliding fit gap 60, and the edge of the bottom plate 50 of the other is slidably connected to the sliding fit gap 60 and the bottom plate 50 has an avoidance notch 52. Along the sliding direction of the docking side plate 40, the avoidance notch 52 is arranged corresponding to the connecting piece 311. The docking side plate 40 slides relatively with the receiving side plate 30, and the connecting piece 311 can be inserted into or withdrawn from the avoidance notch 52. The avoidance notch 52 of the bottom plate 50 is used to avoid the connecting piece 311 arranged on the corresponding inner side plate 31, which is conducive to avoiding the connecting piece 311 from blocking the other sub-box part 20, so that the docking side plate 40 can be fully inserted into the receiving side plate 30, so that the overall size of the box body 10 can be minimized, and the volume of the accommodating space 11 can be minimized.

[0083] For example, see Figure 6As shown, the width of the avoidance notch 52 can be reduced along the direction from the entrance to the bottom of the avoidance notch 52. The direction from the entrance to the bottom of the avoidance notch 52 is parallel to the sliding direction of the docking side plate 40. A chamfer 53 is provided on the bottom plate 50 near the entrance area of ​​the avoidance notch 52. An inclined inner wall surface 54 connected to the chamfer 53 is provided on the bottom plate 50 along the direction from the entrance to the bottom of the avoidance notch 52. The inclined inner wall surface 54 is provided facing the avoidance notch 52. The chamfer 53 and the inclined inner wall surface 54 provided on the bottom plate 50 can be used to guide the bottom plate 50 and the connecting piece 311 to complete the plugging smoothly.

[0084] In some possible implementations, see Figure 6 As shown, the docking side plate 40 includes a docking plate body 41 and a wing plate 42. The docking plate body 41 is inserted into the insertion cavity 301 to be slidably connected to the receiving side plate 30. The docking plate body 41 has a positioning groove 411. The wing plate 42 is connected to the docking plate body 41. Along the sliding direction of the docking side plate 40, the connection position between the wing plate 42 and the docking plate body 41 is spaced from the positioning groove 411. Along the sliding direction of the docking side plate 40, the wing plate 42 is folded toward the positioning groove 411 and the wing plate 42 is snapped into the positioning groove 411. The portion of the wing plate 42 that passes through the positioning groove 411 forms a limiting tongue 401. The limiting tongue 401 is located on the side of the docking plate body 41 facing the accommodating space 11.

[0085] In a direction perpendicular to the depth direction Z of the accommodation space 11 , the positioning groove 411 of the docking plate body 41 penetrates the inner wall and the outer wall of the docking plate body 41 . In the depth direction Z of the accommodation space 11 , the positioning groove 411 penetrates the top wall of the docking plate body 41 .

[0086] The limiting tongue 401 formed by the portion of the wing plate 42 passing through the positioning groove 411 is in an inclined state relative to the docking plate body 41. When the docking side plate 40 is inserted into the receiving side plate 30, and the limiting tongue 401 is not aligned with the limiting hole 302 on the receiving side plate 30, the receiving side plate 30 will squeeze the limiting tongue 401 so that the limiting tongue 401 is close to the docking plate body 41. When the limiting tongue 401 is aligned with the limiting hole 302 on the receiving side plate 30, the squeezing force of the receiving side plate 30 on the limiting tongue 401 disappears, so that the limiting tongue 401 can rebound and be stuck in the limiting hole 302.

[0087] The method of folding the wing plate 42 and snapping it into the positioning groove 411 to form the limiting tongue 401 is beneficial to reducing the difficulty of processing and manufacturing the limiting tongue 401. At the same time, there is no need to connect the limiting tongue 401 and the docking body through additional connecting parts (such as glue), which reduces the number of parts used and reduces the difficulty of assembling the limiting tongue 401 and the docking plate body 41.

[0088] Along the depth direction Z of the accommodation space 11 , the size of the docking plate body 41 is larger than the size of the wing plate 42 . The wing plate 42 is disposed close to the top of the docking plate body 41 .

[0089] In some examples, the docking plate body 41 and the wing plate 42 are an integrally formed structure, which is beneficial for improving the connection stability between the docking plate body 41 and the wing plate 42 .

[0090] In some examples, for the sub-box portion 20 having a docking side panel 40 and a corresponding bottom panel 50, along the depth direction Z of the accommodating space 11, the positioning groove 411 of the docking plate body 41 is correspondingly arranged with the avoidance notch 52 of the bottom panel 50, and at the same time, the limiting tongue 401 is correspondingly arranged with the avoidance notch 52 of the bottom panel 50.

[0091] In some possible implementations, see Figure 1 and Figure 5 As shown, the sub-box portion 20 includes a bottom plate 50. Along the depth direction Z of the accommodating space 11, the opening of the accommodating space 11 is arranged corresponding to the bottom plate 50 of the sub-box portion 20. The bottom plates 50 of each sub-box portion 20 are stacked. Along the depth direction Z of the accommodating space 11, the orthographic projections of each bottom plate 50 have an overlapping area, so that the box body 10 forms a closed bottom, avoiding the product placed in the accommodating space 11 from being exposed at the bottom of the box body 10. In addition, each bottom plate 50 can support each other to disperse the force of the bearing product. When at least two sub-box portions 20 slide against each other, the corresponding bottom plates 50 also move synchronously relative to each other. At least two sub-box portions 20 slide against each other to adjust the area of ​​the overlapping area between the orthographic projections of the bottom plates 50, and at the same time adjust the volume of the accommodating space 11. The larger the area of ​​the overlapping area between the orthographic projections of the bottom plates 50, the smaller the volume of the accommodating space 11. The smaller the area of ​​the overlapping area between the orthographic projections of the bottom plates 50, the larger the volume of the accommodating space 11.

[0092] In some examples, the bottom plates 50 of each sub-box portion 20 overlap each other in sequence. The orthographic projections of each bottom plate 50 in the overlapping area form an overlapping area between the orthographic projections of each bottom plate 50.

[0093] In some practicable manners, the box body 10 may include more than three sub-box parts 20. Each receiving side plate 30 and each docking side plate 40 in the more than three sub-box parts 20 encloses and forms a receiving space.

[0094] In some examples, among more than three sub-boxes 20, each sub-box 20 includes a receiving side plate 30 and a docking side plate 40. A receiving side plate 30 and a docking side plate 40 of any two adjacent sub-boxes 20 are slidably connected.

[0095] In some examples, among more than three sub-box portions 20 , some sub-box portions 20 include two receiving side plates 30 , some sub-box portions 20 include two docking side plates 40 , and some sub-box portions 20 each include one receiving side plate 30 and one docking side plate 40 .

[0096] The sub-box parts 20 including two receiving side plates 30 are respectively adjacent to the two sub-box parts 20 including the docking side plates 40, and one receiving side plate 30 is slidably connected to an adjacent docking side plate 40. The sub-box parts 20 including two docking side plates 40 are respectively adjacent to the two sub-box parts 20 including the receiving side plates 30, and one docking side plate 40 is slidably connected to an adjacent receiving side plate 30.

[0097] In some achievable ways, the box body 10 includes four sub-box parts 20. The four sub-box parts 20 are connected in sequence. Each receiving side plate 30 and each docking side plate 40 in the four sub-box parts 20 enclose a rectangular structure to form a rectangular accommodating space 11. The box body 10 formed by assembling the four sub-box parts 20 is in a rectangular structure, which is conducive to arranging multiple box bodies 10 in a side-by-side or stacked manner, thereby making it easier to arrange the space occupied by the multiple box bodies 10 after arrangement, improve space utilization, and facilitate placing a large number of box bodies 10 in a limited space.

[0098] In some examples, the bottom plates 50 of the four sub-box parts 20 overlap each other in sequence. Alternatively, the bottom plates 50 of the two sub-box parts 20 on the diagonal line overlap each other.

[0099] In some examples, among the four sub-boxes 20, one sub-box 20 includes two mutually perpendicular receiving side plates 30, and one sub-box 20 includes two mutually perpendicular docking side plates 40, while the other two sub-boxes 20 each include a mutually perpendicular receiving side plate 30 and a docking side plate 40. The four sub-boxes 20 slide relative to each other to adjust the volume of the accommodating space 11.

[0100] For ease of description, Figure 7 The partial structure of the box body 10 is schematically shown. Figure 1 and Figure 7 As shown, the sub-box portion 20 including two mutually perpendicular receiving side plates 30 is defined as a first sub-box portion 101. The sub-box portion 20 including two mutually perpendicular butting side plates 40 is defined as a second sub-box portion 102. The two sub-box portions 20 including one mutually perpendicular receiving side plate 30 and one butting side plate 40 are defined as a third sub-box portion 103 and a fourth sub-box portion 104, respectively.

[0101] The first sub-box portion 101, the second sub-box portion 102, the third sub-box portion 103 and the fourth sub-box portion 104 are connected in sequence. The first sub-box portion 101 and the third sub-box portion 103 are arranged opposite to each other along a diagonal line. The second sub-box portion 102 and the fourth sub-box portion 104 are arranged opposite to each other along a diagonal line. The second sub-box portion 102 and the fourth sub-box portion 104 are slidably connected to the first sub-box portion 101 respectively. The second sub-box portion 102 and the fourth sub-box portion 104 are slidably connected to the third sub-box portion 103 respectively.

[0102] In some examples, the direction in which the first sub-box portion 101 and the second sub-box portion 102 are arranged is defined as a first direction X. Along the first direction X, the second sub-box portion 102 and the third sub-box portion 103 are simultaneously pulled or pushed to slide relative to the first sub-box portion 101 and the fourth sub-box portion 104, but the second sub-box portion 102 and the third sub-box portion 103 do not slide, and the first sub-box portion 101 and the fourth sub-box portion 104 do not slide, so that the size of the box body 10 and the volume of the accommodating space 11 can be adjusted in the first direction X.

[0103] or,

[0104] The direction in which the first sub-box portion 101 and the fourth sub-box portion 104 are arranged is defined as the second direction Y. The first direction X is perpendicular to the second direction Y. Along the second direction Y, the third sub-box portion 103 and the fourth sub-box portion 104 are simultaneously pulled or pushed to slide relative to the second sub-box portion 102 and the first sub-box portion 101, but the first sub-box portion 101 and the second sub-box portion 102 do not slide, and the third sub-box portion 103 and the fourth sub-box portion 104 do not slide, so that the size of the box body 10 and the volume of the accommodating space 11 can be adjusted in the second direction Y.

[0105] or,

[0106] The first sub-box portion 101, the second sub-box portion 102, the third sub-box portion 103 and the fourth sub-box portion 104 are pulled or pushed simultaneously along the first direction X and the second direction Y, so that the first sub-box portion 101, the second sub-box portion 102, the third sub-box portion 103 and the fourth sub-box portion 104 slide relative to each other, thereby adjusting the size of the box body 10 and the volume of the accommodating space 11 in the first direction X and the second direction Y at the same time.

[0107] For some examples, see Figure 7As shown, when the first sub-box 101, the second sub-box 102, the third sub-box 103 and the fourth sub-box 104 are adjusted to the state where the overall size of the box body 10 is the smallest and the volume of the accommodating space 11 is the smallest, the exposed area of ​​the bottom plate 50 of the first sub-box 101 is the largest, while the exposed area of ​​the bottom plate 50 of the second sub-box 102 is the smallest, and the area of ​​the bottom plate 50 of the third sub-box 103 and the bottom plate 50 of the fourth sub-box 104 that is not blocked by the bottom plate 50 of the first sub-box 101 forms a handle position 70. The handle position 70 is convenient for the user to place his fingers to pull the third sub-box 103 and the fourth sub-box 104, so that the process of pulling the first sub-box 101, the second sub-box 102, the third sub-box 103 and the fourth sub-box 104 apart is smoother and easier to operate.

[0108] In some feasible embodiments, the sub-box portion 20 itself is an integrally formed structure, which is beneficial to improving the mechanical strength of the sub-box portion 20 itself, while reducing the difficulty of processing and manufacturing the sub-box portion 20, thereby helping to improve the overall mechanical strength of the box body 10 and reduce the overall cost of the box body 10.

[0109] In some examples, Figure 8 The structure of the first sub-box portion 101 in a flat state is schematically shown. Figure 8 As shown, when the first sub-box portion 101 is unfolded and laid flat, the first sub-box portion 101 includes a bottom plate 50. Two adjacent edges of the bottom plate 50 are respectively connected to the outer plates 32. The edge of each outer plate 32 away from the bottom plate 50 is connected to the inner plate 31. A transition plate 80 is provided between the inner plate 31 and the outer plate 32. The inner plate 31 is provided with a limiting hole 302 and a connecting piece 311 protruding in a direction away from the bottom plate 50. The bottom plate 50 is provided with a connecting hole 51 corresponding to the connecting piece 311. An outer plate 32 is provided with a plug tongue 90 at an edge close to the other outer plate 32, and an insert hole 100 is correspondingly provided at the edge of the other outer plate 32.

[0110] Fig. 9 The molding process of the first sub-box part 101 is schematically shown. Fig. 9 As shown, the molding process of the first sub-box portion 101 can be:

[0111] The two outer plates 32 are folded 90 degrees relative to the bottom plate 50, and the plug tongue 90 of one outer plate 32 is inserted into the insertion hole 100 of the other outer plate 32. After the plug tongue 90 passes through the insertion hole 100, the plug tongue 90 is folded, which is beneficial to prevent the plug tongue 90 from coming out of the insertion hole 100.

[0112] The two inner panels 31 are folded toward the bottom panel 50, and the connecting piece 311 on the inner panel 31 is inserted into the connecting hole 51 of the bottom panel 50. After the connecting piece 311 passes through the connecting hole 51, the connecting piece 311 is folded, which is helpful to prevent the connecting piece 311 from coming out of the connecting hole 51 and prevent the inner panel 31 from rebounding and tilting. At this time, the plug-in cavity 301 is formed between the inner panel 31 and the outer panel 32. A sliding fit gap 60 is formed between the inner panel 31 and the bottom panel 50. The transition plate 80 between the inner panel 31 and the outer panel 32 can form the top of the receiving side panel 30.

[0113] Fig.10 The structure of the second sub-box portion 102 in a flat state is schematically shown. Fig.10 As shown, when the second sub-box part 102 is unfolded and laid flat, the second sub-box part 102 includes a bottom plate 50. Two docking side plates 40 are correspondingly arranged at one edge of the bottom plate 50. The two docking side plates 40 are connected. One of the two docking side plates 40 is connected to the bottom plate 50, and the other is not directly connected to the bottom plate 50. The two docking side plates 40 each include a docking plate body 41 and a wing plate 42. The docking plate body 41 of one docking side plate 40 is connected to the bottom plate 50. The docking plate bodies 41 of the two docking side plates 40 are respectively connected. The wing plates 42 are arranged on the edges of the two docking side plates 40 that are away from each other. A positioning groove 411 is arranged at a position of the docking plate body 41 close to the wing plate 42. The docking side plate 40 that is not directly connected to the bottom plate 50 is provided with an inserting tongue 90 close to the edge of the bottom plate 50. The bottom plate 50 is correspondingly provided with a plug hole 100. An avoidance notch 52 is provided on the edge of the bottom plate 50 connected to the docking side plate 40 , and an avoidance notch 52 is provided on the edge of the bottom plate 50 on which the insertion hole 100 is provided.

[0114] Fig.11 The forming process of the second sub-box part 102 is schematically shown. Fig.11 As shown, the molding process of the second sub-box portion 102 can be:

[0115] Fold the butt joint side plate 40 connected to the bottom plate 50 by 90 degrees relative to the bottom plate 50, and then fold the butt joint side plate 40 not connected to the bottom plate 50 toward the bottom plate 50, so that the two butt joint side plates 40 are perpendicular to each other;

[0116] Insert the inserting tongue 90 on the docking side plate 40 not connected to the bottom plate 50 into the inserting hole 100 on the bottom plate 50 . After the inserting tongue 90 passes through the inserting hole 100 , fold the inserting tongue 90 to prevent the inserting tongue 90 from coming out of the inserting hole 100 .

[0117] The wing plates 42 on the docking side plates 40 are folded toward the docking plate body 41, with a portion of the wing plates 42 overlapping the docking plate body 41 and another portion passing through the positioning groove 411. The portion of the wing plates 42 passing through the positioning groove 411 forms a limiting tongue 401. The limiting tongue 401 is in an inclined state relative to the docking plate body 41.

[0118] Fig.12 The structure of the third sub-box portion 103 in a flattened state is schematically shown. Fig.12 As shown, when the third sub-box part 103 is unfolded and laid flat, the third sub-box part 103 includes a bottom plate 50. Two adjacent edges of the bottom plate 50 are connected to the outer plate 32 and the docking side plate 40 respectively. The edge of the outer plate 32 away from the bottom plate 50 is connected to the inner plate 31. A transition plate 80 is provided between the inner plate 31 and the outer plate 32. The inner plate 31 is provided with a limiting hole 302 and a connecting piece 311 protruding in a direction away from the bottom plate 50. The bottom plate 50 is provided with a connecting hole 51 corresponding to the connecting piece 311. The edge of the outer plate 32 close to the docking side plate 40 is provided with a plug tongue 90, and the edge of the docking side plate 40 is correspondingly provided with a plug hole 100. The docking side plate 40 includes a docking plate body 41 and a wing plate 42. The docking plate body 41 is connected to the bottom plate 50. The wing plate 42 is provided on the edge of the docking side plate 40 away from the outer plate 32. A positioning groove 411 is provided at the position of the docking plate body 41 close to the wing plate 42. An avoidance notch 52 is provided on the edge of the bottom plate 50 connected to the butt side plate 40 .

[0119] Fig.13 The forming process of the third sub-box part 103 is schematically shown. Fig.13 As shown, the molding process of the third sub-box portion 103 can be:

[0120] The docking side plate 40 and the outer plate 32 connected to the bottom plate 50 are folded 90 degrees relative to the bottom plate 50, and the plug tongue 90 of the outer plate 32 is inserted into the insertion hole 100 of the docking side plate 40. After the plug tongue 90 passes through the insertion hole 100, the plug tongue 90 is folded, which is conducive to preventing the plug tongue 90 from coming out of the insertion hole 100.

[0121] The wing plate 42 on the docking side plate 40 is folded toward the docking plate body 41, a part of the wing plate 42 is overlapped with the docking plate body 41, and the other part passes through the positioning groove 411. The part of the wing plate 42 passing through the positioning groove 411 forms a limiting tongue 401. The limiting tongue 401 is in an inclined state relative to the docking plate body 41.

[0122] The inner plate 31 is folded toward the bottom plate 50, and the connecting piece 311 on the inner plate 31 is inserted into the connecting hole 51 of the bottom plate 50. After the connecting piece 311 passes through the connecting hole 51, the connecting piece 311 is folded, which is conducive to preventing the connecting piece 311 from coming out of the connecting hole 51 and preventing the inner plate 31 from rebounding and tilting. At this time, the plug-in cavity 301 is formed between the inner plate 31 and the outer plate 32. A sliding fit gap 60 is formed between the inner plate 31 and the bottom plate 50. The transition plate 80 between the inner plate 31 and the outer plate 32 can form the top of the receiving side plate 30.

[0123] Fig.14 The structure of the fourth sub-box portion 104 in a flattened state is schematically shown. Fig.12 As shown, when the fourth sub-box portion 104 is unfolded and laid flat, the fourth sub-box portion 104 includes a bottom plate 50. Two adjacent edges of the bottom plate 50 are connected to the outer plate 32 and the docking side plate 40 respectively. The edge of the outer plate 32 away from the bottom plate 50 is connected to the inner plate 31. A transition plate 80 is provided between the inner plate 31 and the outer plate 32. The inner plate 31 is provided with a limited hole 302 and a connecting piece 311 protruding in a direction away from the bottom plate 50. The bottom plate 50 is provided with a connecting hole 51 corresponding to the connecting piece 311. The edge of the outer plate 32 close to the docking side plate 40 is provided with a plug tongue 90, and the edge of the docking side plate 40 is correspondingly provided with a plug hole 100. The docking side plate 40 includes a docking plate body 41 and a wing plate 42. The docking plate body 41 is connected to the bottom plate 50. The wing plate 42 is provided on the edge of the docking side plate 40 away from the outer plate 32. A positioning groove 411 is provided at the position of the docking plate body 41 close to the wing plate 42. An avoidance notch 52 is provided on the edge of the bottom plate 50 connected to the butt side plate 40 .

[0124] Fig.15 The forming process of the fourth sub-box portion 104 is schematically shown. Fig.15 As shown, the molding process of the fourth sub-box portion 104 can be:

[0125] The docking side plate 40 and the outer plate 32 connected to the bottom plate 50 are folded 90 degrees relative to the bottom plate 50, and the plug tongue 90 of the outer plate 32 is inserted into the insertion hole 100 of the docking side plate 40. After the plug tongue 90 passes through the insertion hole 100, the plug tongue 90 is folded, which is conducive to preventing the plug tongue 90 from coming out of the insertion hole 100.

[0126] The wing plate 42 on the docking side plate 40 is folded toward the docking plate body 41, a part of the wing plate 42 is overlapped with the docking plate body 41, and the other part passes through the positioning groove 411. The part of the wing plate 42 passing through the positioning groove 411 forms a limiting tongue 401. The limiting tongue 401 is in an inclined state relative to the docking plate body 41.

[0127] The inner plate 31 is folded toward the bottom plate 50, and the connecting piece 311 on the inner plate 31 is inserted into the connecting hole 51 of the bottom plate 50. After the connecting piece 311 passes through the connecting hole 51, the connecting piece 311 is folded, which is conducive to preventing the connecting piece 311 from coming out of the connecting hole 51 and preventing the inner plate 31 from rebounding and tilting. At this time, the plug-in cavity 301 is formed between the inner plate 31 and the outer plate 32. A sliding fit gap 60 is formed between the inner plate 31 and the bottom plate 50. The transition plate 80 between the inner plate 31 and the outer plate 32 can form the top of the receiving side plate 30.

[0128] The molding process of the box body 10 can be:

[0129] The corresponding receiving side plates 30 and docking side plates 40 in the first sub-box 101, the second sub-box 102, the third sub-box 103 and the fourth sub-box 104 are plugged in. The bottom plates 50 of the first sub-box 101, the second sub-box 102, the third sub-box 103 and the fourth sub-box 104 are stacked.

[0130] In some feasible ways, the material of the sub-box portion 20 can be corrugated paper. Corrugated paper is economical and environmentally friendly. Alternatively, the material of the sub-box portion 20 can be plastic, which is conducive to improving the service life of the box body 10, so that the box body 10 can be recycled for multiple times and reduce costs.

[0131] Fig.16 Schematic diagram showing the partial structure of the packaging box. Fig.16 As shown, the embodiment of the present application also provides a packaging box 200. The packaging box 200 includes an inner box and an outer box that are buckled together. The inner box and the outer box are both the box body 10 of the above-mentioned embodiment. The process of buckling the outer box and the inner box is to adjust the storage space 11 of the outer box to a volume that can accommodate the entire inner box, and then buckle the outer box onto the inner box. The inner box can enter the storage space 11 of the outer box. The storage space 11 of the inner box and the storage space 11 of the outer box can together form a space for accommodating the product to be packaged. After the product to be packaged is placed in the storage space 11 of the inner box, the outer box and the inner box are buckled to complete the product packaging.

[0132] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A box body, characterized in that: include: At least two sub-box parts, at least two of the sub-box parts enclose a storage space with an opening, any two adjacent sub-box parts are slidably connected, and at least two of the sub-box parts slide relative to each other to adjust the volume of the storage space; Among them, among any two adjacent sub-box parts, one has a receiving side plate and the other has a docking side plate, the receiving side plate includes an inserting cavity and a limiting hole communicating with the inserting cavity, and the docking side plate includes a limiting tongue matched with the limiting hole; The docking side panel is inserted into the plug-in cavity so as to be slidably connected with the receiving side panel. When the docking side panel is slid out to the extreme position relative to the receiving side panel, the limit tongue is inserted into the limit hole, and the volume of the accommodating space is maximized. When the docking side panel slides away from the extreme position relative to the receiving side panel, the limit tongue withdraws from the limit hole and enters the plug-in cavity, and the volume of the accommodating space becomes smaller.

2. The box body according to claim 1, characterized in that: The limiting hole on the receiving side plate is arranged close to the opening, and the limiting tongue is arranged at the end of the docking side plate close to the opening.

3. The box body according to claim 2, characterized in that: The receiving side plate comprises an inner plate and an outer plate, the plug-in cavity is located between the inner plate and the outer plate, the inner plate is provided with the limiting hole, and the limiting tongue is provided facing the accommodating space.

4. The box body according to claim 3, characterized in that: The sub-box portion includes a bottom plate, the opening is arranged corresponding to the bottom plate, the bottom plate connected to the receiving side plate is provided with a connecting hole, the inner side plate includes a connecting piece, the connecting piece is plugged into the connecting hole, and the connecting piece is connected to the bottom plate.

5. The box body according to claim 4, characterized in that: A sliding fit gap is provided between the inner side plate and the bottom plate, the plug-in cavity is connected to the sliding fit gap, and along the sliding direction of the docking side plate, the sliding fit gap is provided corresponding to the connecting piece, and one of any two adjacent sub-box parts has the sliding fit gap, and the bottom plate edge of the other one is slidably connected to the sliding fit gap.

6. The box body according to claim 5, characterized in that: One of any two adjacent sub-box parts has the sliding fit gap, the bottom plate edge of the other one is slidably connected to the sliding fit gap and the bottom plate has an avoidance gap, along the sliding direction of the docking side plate, the avoidance gap is arranged corresponding to the connecting piece, the docking side plate and the receiving side plate slide relative to each other, and the connecting piece is inserted into or withdrawn from the avoidance gap.

7. The box body according to claim 2, characterized in that: The docking side plate includes a docking plate body and a wing plate, the docking plate body is inserted into the insertion cavity to be slidably connected to the receiving side plate, the docking plate body has a positioning groove, the wing plate is connected to the docking plate body, along the sliding direction of the docking side plate, the wing plate is folded toward the positioning groove and the wing plate is clamped in the positioning groove, the part of the wing plate passing through the positioning groove forms the limiting tongue, and the limiting tongue is located on the side of the docking plate body facing the accommodating space.

8. The box body according to any one of claims 1 to 7, characterized in that: The sub-box part includes a bottom plate, the opening is arranged corresponding to the bottom plate, the bottom plates of each sub-box part are stacked, and along the depth direction of the accommodating space, the orthographic projections of each bottom plate have an overlapping area, and at least two of the sub-box parts slide with each other to adjust the area of ​​the overlapping area.

9. The box body according to any one of claims 1 to 7, characterized in that: The box body includes more than three sub-box parts, and each of the receiving side plates and each of the mating side plates in the more than three sub-box parts encloses the accommodating space.

10. The box body according to claim 9, characterized in that: Among the three or more sub-box parts, each of the sub-box parts includes one the receiving side plate and one the docking side plate; or, among the three or more sub-box parts, some of the sub-box parts include two the receiving side plates, some of the sub-box parts include two the docking side plates, and some of the sub-box parts each include one the receiving side plate and one the docking side plate.

11. The box body according to claim 9, characterized in that: The box body includes four sub-box parts, among which one sub-box part includes two mutually perpendicular receiving side plates, one sub-box part includes two mutually perpendicular docking side plates, and the other two sub-box parts each include one mutually perpendicular receiving side plate and one docking side plate, and the four sub-box parts form a rectangular structure.

12. A packaging box, characterized in that: It comprises an inner box and an outer box which are buckled together, and both the inner box and the outer box are the box bodies according to any one of claims 1 to 11.

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