A packaging carton with adjustable interior space

Abstract

The utility model discloses a kind of packaging cartons with adjustable internal space, including carton body, the inner wall of the carton body is evenly provided with multiple groups of positioning tracks, the inside of the carton body is provided with space adjusting mechanism, multiple groups of inclined bracing pieces are provided on the space adjusting mechanism, isolating piece is movably arranged on the inclined bracing piece, the outside of the carton body is wrapped with protective armor mechanism, bottom support frame is fixedly arranged at the bottom of the protective armor mechanism, and the surface of the bottom support frame is fixedly connected with corner guard frame.The packaging carton with adjustable internal space, bottom support frame and top guard frame respectively strengthen the bottom and top bearing capacity of carton, cooperate with positive guard frame and side guard frame to reinforce four sides, form three-dimensional frame of upper and lower support, side tie and corner protection, greatly improve the overall extrusion resistance of carton, especially suitable for stacking storage or transportation, can bear the weight of upper layer goods, and carton is not prone to collapse damage.

Description

Technical Field

[0001] This utility model relates to the field of packaging cartons, specifically a packaging carton with adjustable internal space. Background Technology

[0002] Packaging cartons are made of paper products, using corrugated cardboard through die-cutting, creasing, stapling, or gluing. They are used to package various items and are widely used in packaging, transportation, and many other industries. They protect goods and facilitate packaging, storage, and transportation. However, traditional corrugated cartons have a fixed internal volume and cannot be adjusted according to actual needs. They can only package items of a fixed size. The limited size of cartons means that some items cannot fit and are forced in, which can easily cause the cartons to burst. When packaging items such as bulky cotton clothing, which will compress after being subjected to heavy pressure for a period of time, if existing cartons are used, the flaps on both sides of the carton will not close properly, exposing the contents. This results in poor packaging sealing and affects the safety of transporting goods.

[0003] To solve the above problems, after searching, Chinese patent with publication number CN213893266U was found, which discloses a packaging carton with adjustable internal space size. The carton includes a main carton, a fixing frame, an inner sealing cardboard, an assembled carton, an outer sealing cardboard, and a limiting strip. The fixing frame is glued and fixed to the surface of the main carton, and a limiting groove is provided on the inner side of the fixing frame.

[0004] Although the above-mentioned device can adjust the overall length of the cardboard box by moving and assembling the box, and can extend outward from the main cardboard box to adjust the size of the internal space of the cardboard box, in actual use, when a large number of packaging cardboard boxes are stacked, the cardboard box needs to bear the weight of all the cardboard boxes above it. The pressure increases linearly with the stacking height. When the pressure exceeds the compression limit of the cardboard box, the bottom cardboard box will deform first, which will cause the upper cardboard box to lose support and cause the whole box to deform and collapse. Utility Model Content

[0005] The purpose of this invention is to provide a packaging carton with adjustable internal space to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, a packaging carton with adjustable internal space is provided, comprising a carton body, wherein multiple sets of positioning tracks are evenly installed on the inner wall of the carton body, a space adjustment mechanism is provided inside the carton body, multiple sets of inclined support plates are provided on the space adjustment mechanism, isolation plates are movably arranged on the inclined support plates, a protective armor mechanism is wrapped around the outer side of the carton body, a bottom support frame is fixedly provided at the bottom of the protective armor mechanism, a corner guard frame is fixedly connected to the surface of the bottom support frame, and a top guard frame is installed on the top of the corner guard frame.

[0007] Furthermore, multiple sets of the inclined bracing plates are distributed in parallel, and each end of the multiple sets of inclined bracing plates is fixedly provided with a positioning seat. The positioning seat and the positioning track are matched in size. The positioning seat is inserted into the positioning groove opened on the positioning track. The cross-section of the positioning seat and the positioning groove are both isosceles trapezoidal.

[0008] Furthermore, multiple sets of the inclined support pieces are positioned and assembled inside the carton body by positioning seats and positioning tracks. The angle between the inclined support piece and the side wall of the carton body is 45°. Two sets of limiting tracks are provided on the inclined support piece, and an isolation piece is clamped between two adjacent sets of inclined support pieces.

[0009] Furthermore, the upper and lower parts of the isolation sheet are equipped with limiting seats, the size of which is adapted to the limiting track. The limiting seats are slidably disposed inside the limiting track, and a first packaging space is formed between two adjacent sets of inclined support sheets, and a second packaging space is formed between two adjacent sets of isolation sheets.

[0010] Furthermore, the protective armor mechanism also includes a front guard and side guards. The front guard, side guards and top guard are all in an "X" shape. The front guard is set in two sets and covers the front and rear sides of the carton body respectively. The side guards are set in two sets and cover the left and right sides of the carton body respectively. The corner guards, front guards, side guards and top guards are all provided with slots.

[0011] Furthermore, four sets of corner guards are arranged in parallel, and the corner guards are in the shape of an "L". The four sets of corner guards are connected and fixed to each other by a front guard and a side guard. The top guard covers the upper surface of the carton body.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This solution forms a first packaging space between two adjacent sets of diagonal braces. The interior of this space can be further separated by partitions. By changing the position of the partitions within the first packaging space, the area of ​​the second packaging space can be altered. The diagonal braces can be flexibly adjusted via the insertion position of the positioning seats within the positioning rails, achieving a coarse adjustment of the overall carton's capacity. Meanwhile, the partitions, via the sliding of the limiting seats within the limiting rails of the diagonal braces, can further subdivide the first packaging space, precisely adjusting the area of ​​the second packaging space. This dual-layer adjustment mechanism, combining coarse and fine adjustments, can adapt to items of different sizes and quantities, such as from large to small items, or from single items to multiple combinations. It eliminates the need for custom-made cartons for specific items, significantly expanding the carton's applicability.

[0014] 2. This solution uses four sets of "L"-shaped corner protectors inserted into the four corners of the carton body. The top surface of the carton body is protected by a top guard. The four sets of corner protectors are reinforced and supported by front and side guards. The "L"-shaped corner protectors directly wrap around the corners, effectively absorbing impact forces such as those from drops or stacking, preventing corner deformation or breakage that could expose the contents. The bottom support and top guard reinforce the bottom and top load-bearing capacity of the carton, respectively. Combined with the reinforcement of the four sides by the front and side guards, this forms a three-dimensional frame with top and bottom support, side bracing, and corner protection, significantly improving the overall compression resistance of the carton. It is especially suitable for stacked storage or transportation, capable of withstanding the weight of upper goods, and the carton is less prone to collapse or damage. Attached Figure Description

[0015] Figure 1 This is an exploded view of the packaging carton of this utility model.

[0016] Figure 2 This is a bottom view of the packaging carton of this utility model.

[0017] Figure 3 This is a three-dimensional view of the structural protective armor mechanism of this utility model;

[0018] Figure 4 This is a bottom view of the structural protective armor mechanism of this utility model;

[0019] Figure 5 The structure of this utility model Figure 1 A schematic diagram of the assembly and installation of the packaging cartons;

[0020] Figure 6 This is a bottom view of the structural packaging carton and protective armor mechanism of this utility model.

[0021] The following are the labels in the diagram: 1. Carton body; 2. Positioning track; 3. Space adjustment mechanism; 31. Diagonal brace; 311. Limiting track; 312. Positioning seat; 32. Isolation plate; 321. Limiting seat; 4. Protective armor mechanism; 41. Bottom support frame; 42. Corner guard frame; 43. Front guard frame; 431. Side guard frame; 44. Top guard frame. Detailed Implementation

[0022] Please see Figure 1-6This utility model provides a packaging carton with adjustable internal space, including a carton body 1. Multiple sets of positioning tracks 2 are evenly installed on the inner wall of the carton body 1. A space adjustment mechanism 3 is provided inside the carton body 1. Multiple sets of inclined support plates 31 are provided on the space adjustment mechanism 3. Isolation plates 32 are movably provided on the inclined support plates 31. A protective armor mechanism 4 is wrapped around the outside of the carton body 1. A bottom support frame 41 is fixedly provided at the bottom of the protective armor mechanism 4. An edge guard frame 42 is fixedly connected to the surface of the bottom support frame 41. A top guard frame 44 is installed on the top of the edge guard frame 42.

[0023] Working Principle: In actual use, the carton body 1 has multiple sets of positioning tracks 2 inside. The positioning tracks 2 facilitate the installation of the space adjustment mechanism 3 inside the carton body 1. Specifically, the inclined support pieces 31 on the space adjustment mechanism 3 are inserted into the positioning tracks 2 through the positioning seats 312 on both sides. A first packaging space is formed between two adjacent sets of inclined support pieces 31. By changing the distance between two adjacent sets of inclined support pieces 31, the internal space of the carton body 1 can be adjusted. At the same time, the first packaging space formed between two adjacent sets of inclined support pieces 31 can be further separated by the isolation piece 32. By changing the position of the isolation piece 32 inside the first packaging space, the spatial area of ​​the second packaging space can be changed. 2. During movement, the limiting seats 321 on both sides are slidably set inside the limiting rails 311 on the inclined support piece 31. The inclined support piece 31 can be flexibly adjusted in the insertion position of the positioning seat 312 in the positioning rail 2, which can directly change the spacing of the "first packaging space" formed by adjacent inclined support pieces 31, and realize the coarse adjustment of the overall accommodating space of the carton. Meanwhile, the isolation piece 32 slides in the limiting rail of the inclined support piece 31 through the limiting seat 321, which can further subdivide the "first packaging space" and precisely adjust the area of ​​the "second packaging space". This dual-layer adjustment mechanism of coarse adjustment and fine adjustment can adapt to items of different sizes and quantities, such as from large items to small items, from single items to multiple combinations, without the need to customize special cartons for specific items, which greatly improves the applicability of the carton.

[0024] In a preferred embodiment, multiple sets of inclined bracing plates 31 are distributed in parallel, and each end of the multiple sets of inclined bracing plates 31 is fixedly provided with a positioning seat 312. The positioning seat 312 and the positioning track 2 are matched in size. The positioning seat 312 is inserted into the positioning groove opened on the positioning track 2. The cross sections of the positioning seat 312 and the positioning groove are both isosceles trapezoids.

[0025] Multiple sets of diagonal bracing pieces 31 are positioned and assembled inside the carton body 1 by positioning seats 312 and positioning rails 2. The angle between the diagonal bracing pieces 31 and the side wall of the carton body 1 is 45°. Two sets of limiting rails 311 are provided on the diagonal bracing pieces 31, and isolation pieces 32 are clamped between adjacent sets of diagonal bracing pieces 31.

[0026] like Figure 1 and Figure 2 As shown: Through the double separation of the diagonal brace 31 and the partition 32, the interior of the carton is divided into multiple independent spaces, which can physically isolate different items and avoid direct collision, friction or compression between items, especially fragile items and precision parts; at the same time, the adjusted space can fit the size of the items more closely, reducing the amplitude of shaking of the items in the carton; the structure of the diagonal brace 31 itself can also support the inner wall of the carton, enhance the overall compression resistance, and further ensure the safety of the items; the internal space of traditional cartons is fixed, and different specifications need to be customized for different sized items, resulting in increased costs and high inventory pressure; while this design, through the adjustable structure, achieves multiple uses for one carton, and the same carton can be used for a variety of items, such as electronic products, parts, and daily necessities, reducing the need for customized special cartons and reducing procurement, inventory and management costs; at the same time, the increased versatility also indirectly reduces the idleness and waste of cartons, which is more in line with the concept of green environmental protection;

[0027] Limit seats 321 are installed on both the upper and lower parts of the isolation sheet 32. The size of the limit seat 321 is adapted to the size of the limit track 311. The limit seat 321 is slidably disposed inside the limit track 311. A first packaging space is formed between two adjacent sets of inclined support sheets 31, and a second packaging space is formed between two adjacent sets of isolation sheets 32.

[0028] like Figure 1 and Figure 2 As shown: The diagonal brace 31 is installed using a plug-in method, with the positioning seat 312 inserted into the positioning rail 2. The movement of the isolation plate 32 is achieved through sliding. The entire adjustment process requires no auxiliary tools such as screws or tape, making the operation simple and intuitive, allowing ordinary users to quickly get started and lowering the barrier to entry. By adjusting the positions of the diagonal brace 31 and the isolation plate 32, the internal space can be customized according to the actual size of the item, avoiding the waste problem of large boxes containing small items due to fixed space in traditional cardboard boxes. During transportation or storage, the internal volume of the cardboard box can be utilized more efficiently, reducing ineffective space occupation, indirectly reducing transportation frequency or storage area, and improving the overall efficiency. Logistics efficiency; the inclined support plate 31 can be stably fixed in the preset position through the insertion and cooperation of the positioning seat 312 and the positioning rail 2, avoiding the spacing deviation caused by the shaking of the items; the isolation plate 32 can be flexibly adjusted in position through the sliding cooperation of the limiting seat 321 and the limiting rail, and can remain stable after being fixed, ensuring that the boundaries of each partition space are clear and the structure is solid, and will not be easily deformed by external forces such as handling and stacking, ensuring reliability in long-term use; through the adjustable partition core logic, flexibility, protection, versatility and economy are taken into account, which can significantly improve efficiency and safety in packaging, transportation and storage scenarios.

[0029] As a preferred embodiment, the protective armor mechanism 4 also includes a front guard 43 and a side guard 431. The front guard 43, the side guard 431 and the top guard 44 are all in an "X" shape. The front guard 43 is configured in two sets to cover the front and rear sides of the carton body 1 respectively, and the side guard 431 is configured in two sets to cover the left and right sides of the carton body 1 respectively. The corner guard frame 42, the front guard 43, the side guard 431 and the top guard 44 are all provided with slots.

[0030] Four sets of corner guard frames 42 are arranged in parallel. The corner guard frames 42 are in an "L" shape. The four sets of corner guard frames 42 are connected and fixed to each other by the front guard frame 43 and the side guard frame 431. The top guard frame 44 covers the upper surface of the carton body 1.

[0031] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown: During use, the outer side of the cardboard box body 1 is protected by a protective armor mechanism 4. The material of the protective armor mechanism 4 can be, but is not limited to, plastic and metal. The specific usage of the protective armor mechanism 4 is as follows: the cardboard box body 1 is placed on the base support frame 41, and four sets of "L"-shaped corner guards 42 are respectively inserted into the four corners of the cardboard box body 1. At the same time, the upper surface of the cardboard box body 1 is protected by the top guard 44. The four sets of corner guards 42 are reinforced and supported by the front guard 43 and the side guard 431. The four corners of the cardboard box are the parts most susceptible to collision and wear during transportation and handling. The protective frame 42 directly wraps around the corners, effectively absorbing impact forces such as those from drops or stacking, preventing corner deformation or breakage that could expose the contents. The bottom support frame 41 and top protective frame 44 reinforce the load-bearing capacity of the bottom and top of the carton, respectively. Together with the front protective frame 43 and side protective frames 431, they reinforce the four sides, forming a three-dimensional frame with top and bottom support, side bracing, and corner protection. This significantly improves the overall compression resistance of the carton, making it especially suitable for stacked storage or transportation, and capable of withstanding the weight of the goods on top. The protective armor made of plastic or metal is harder than the cardboard, directly blocking sharp external objects and protecting the contents.

[0032] If the outer cardboard of a traditional cardboard box is damaged, its overall strength will drop sharply, often resulting in a single-use condition. The protective armor mechanism, however, transfers the pressure of external wear and impact to itself, reducing direct wear on the box body. Even with repeated use over a long period, the box body is less prone to failure due to external damage. Combined with an adjustable internal structure, this further enhances the box's multi-purpose value and reduces long-term usage costs. For heavier items such as hardware parts and tools, the bottom support frame 41 distributes the weight, preventing the bottom of the box from cracking due to excessive load. The overall armor frame also balances internal pressure, preventing the sides of the box from bulging and deforming. The top protective frame 44 and bottom support frame 41 of the protective armor have flat surfaces and a strong frame structure, which can ensure that multiple armored cardboard boxes are aligned vertically and evenly stressed when stacked, reducing the risk of tipping over due to cardboard box deformation during stacking. In warehouse storage or truck transportation, vertical space can be utilized more efficiently, improving the overall loading capacity and space utilization. Through the design of key protection and overall reinforcement, the shortcomings of insufficient strength of traditional cardboard box materials are made up for. While ensuring the safety of the contents, the durability, reusability and scene adaptability of the cardboard box are significantly improved, especially suitable for scenarios that require long-term turnover and transportation of heavy and fragile items.

Claims

1. A packaging carton of internal volume adjustable comprising a carton body (1) characterised in that: Multiple sets of positioning rails (2) are evenly installed on the inner wall of the carton body (1). A space adjustment mechanism (3) is provided inside the carton body (1). Multiple sets of inclined support plates (31) are provided on the space adjustment mechanism (3). An isolation plate (32) is movably provided on the inclined support plate (31). A protective armor mechanism (4) is wrapped around the outer side of the carton body (1). A bottom support frame (41) is fixedly provided at the bottom of the protective armor mechanism (4). An edge guard frame (42) is fixedly connected to the surface of the bottom support frame (41). A top guard frame (44) is installed on the top of the edge guard frame (42).

2. A carton of variable interior space according to claim 1, wherein: Multiple sets of the inclined bracing plates (31) are distributed in parallel, and each end of the multiple sets of inclined bracing plates (31) is fixedly provided with a positioning seat (312). The positioning seat (312) and the positioning track (2) are matched in size. The positioning seat (312) is inserted into the positioning groove opened on the positioning track (2). The cross sections of the positioning seat (312) and the positioning groove are both isosceles trapezoids.

3. A carton of variable interior space according to claim 2, wherein: Multiple sets of the inclined support pieces (31) are positioned and assembled inside the carton body (1) by positioning seats (312) and positioning rails (2). The angle between the inclined support piece (31) and the side wall of the carton body (1) is 45°. Two sets of limiting rails (311) are provided on the inclined support piece (31), and an isolation piece (32) is held between two adjacent sets of inclined support pieces (31).

4. A carton of variable interior space according to claim 3, wherein: Limiting seats (321) are installed on the upper and lower parts of the isolation sheet (32). The limiting seats (321) are adapted to the size of the limiting track (311). The limiting seats (321) are slidably disposed inside the limiting track (311). A first packaging space is formed between two adjacent sets of inclined support sheets (31), and a second packaging space is formed between two adjacent sets of isolation sheets (32).

5. A carton of variable interior space according to claim 1 wherein: The protective armor mechanism (4) also includes a front guard (43) and a side guard (431). The front guard (43), the side guard (431) and the top guard (44) are all "X" shaped. The front guard (43) is set in two sets to cover the front and rear sides of the carton body (1) respectively. The side guard (431) is set in two sets to cover the left and right sides of the carton body (1) respectively. The corner guard (42), the front guard (43), the side guard (431) and the top guard (44) are all provided with slots.

6. A carton of variable interior space according to claim 5, wherein: The four sets of corner guard frames (42) are arranged in parallel. The corner guard frames (42) are "L" shaped. The four sets of corner guard frames (42) are connected and fixed to each other by the front guard frame (43) and the side guard frame (431). The top guard frame (44) covers the upper surface of the carton body (1).

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