Carton with high interlayer bonding strength

Abstract

The utility model relates to paper box container technical field, concretely to a kind of paper box of high interlaminar bonding strength, including box, four corner places in box interior are all provided with supporting structure, supporting structure includes support seat and positioning assembly, positioning assembly includes sleeve and movable column, the bottom end of movable column is equipped with bottom boss column, the bottom end of bottom boss column is equipped with boss pin. The paper box of high interlaminar bonding strength, support seat is column shape and closely adheres to the corner inside box with the cross section of triangle, the stability of triangle structure is used to enhance the bearing capacity of the corner of box in vertical direction, reduce the corner deformation condition when multilayer stacking, through the positioning assembly of setting, and make the size of boss pin and pin hole in positioning assembly adaptation, when multiple boxes are vertically stacked, the boss pin of upper box can be inserted into the pin hole of lower adjacent box, play vertical positioning connection effect, reduce the horizontal deviation when stacking.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box and container technology, specifically to a cardboard box with high interlayer bonding strength. Background Technology

[0002] Cardboard boxes, as a common packaging medium, often require multiple layers to be stacked during warehousing and transportation. The interlayer bonding is key to ensuring stacking stability. A reasonable bonding method allows multiple cardboard boxes to form an integral load-bearing structure, adapting to the load-bearing requirements of different scenarios. This protects the contents while improving space utilization, and is a fundamental and important technological direction of concern in the packaging industry.

[0003] Utility model patent CN220595495U discloses a reinforced corrugated cardboard box. This reinforced corrugated cardboard box includes an outer cardboard box and an inner cardboard box located inside the outer cardboard box. The inner cardboard box includes side reinforcing cardboard and side-jointing reinforcing plates. The side reinforcing cardboard is connected to both sides of the inner cardboard box and is attached to the inner wall of the outer cardboard box. The side-jointing reinforcing plates are located on both sides of the inner cardboard box away from the side reinforcing cardboard, and the outer walls of the side-jointing reinforcing plates are attached to the outer walls of both ends of the side reinforcing cardboard. Equidistantly arranged rivets connect the outer cardboard box, side reinforcing cardboard, and side-jointing reinforcing plates at their attachment points. This reinforced corrugated cardboard box enables rapid production while simultaneously strengthening the box's sturdiness, making its production and use safer and more convenient. Furthermore, the double-layered bottom of the outer cardboard box and inner cardboard box significantly improves the internal protective performance of the inner cardboard box and enhances the moisture-proof performance of the corrugated cardboard box.

[0004] When the reinforced corrugated cardboard box is vertically stacked, the upper and lower boxes rely solely on their own weight to adhere to each other. This can easily lead to instability of the center of gravity due to horizontal offset during stacking. Furthermore, the corners of the box lack rigid support in the vertical direction, which can easily cause corner deformation after multiple layers are stacked, affecting the overall stacking stability. In view of this, we propose a cardboard box with enhanced interlayer bonding strength. Utility Model Content

[0005] The purpose of this invention is to provide a cardboard box with strong interlayer bonding to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A cardboard box with high interlayer bonding strength includes a box body. Support structures are provided at each of the four corners of the box body. Each support structure includes a support base tightly bonded to the corner of the box body and a positioning component fitted within the support base. The support base is a column-shaped structure with a triangular cross-section. The top and bottom ends of the support base abut against the top and bottom walls of the box body after it is closed, respectively. The positioning component includes a sleeve vertically installed within the support base and a movable column fitted within the sleeve and capable of moving axially along the sleeve. The movable column has a top protrusion with a pin hole at its top and a bottom protrusion with a pin at its bottom.

[0007] Preferably, the top edge of the box is provided with a folded edge, and the folded edge is provided with a clearance hole at the two corners of the box. The clearance hole is aligned with the top of the support structure. In this design, the clearance holes prevent the folded edges from obstructing the top of the support structure, ensuring the normal operation of the support structure.

[0008] Preferably, through holes are provided at the four corners of the bottom surface of the box, and the positions of the through holes are aligned with the bottom end of the support structure. The through holes are used for the protruding pins to pass through. In this design, the through-hole provides a channel for the protruding pin to extend, ensuring that the protruding pin can smoothly protrude from the bottom surface of the housing.

[0009] Preferably, a cavity is formed at the surface position corresponding to the inclined side of the support base, and slots are formed at both the top and bottom ends of the cavity. The sleeve has a hollow cylindrical structure, and the top and bottom ends of the sleeve are respectively inserted into the two slots. In this configuration, the cavity provides installation space for the positioning components, and the slot can position and fix the sleeve.

[0010] Preferably, a blocking block is fixed at the opening of the slot, the blocking block restricts the end of the sleeve within the slot, and through holes are provided at both the top and bottom ends of the support base. The through holes are connected to the slot, and the through holes are coaxial with the sleeve. The diameter of the through holes is smaller than the outer diameter of the movable column. In this configuration, the plug prevents the sleeve from falling out of the slot, and the through hole prevents the movable column from protruding from the support.

[0011] Preferably, the outer diameter of the top protrusion is smaller than the diameter of the through hole, and a spring is sleeved on the outer peripheral surface of the top protrusion, with the bottom end of the spring abutting against the top end of the movable column and the top end of the spring abutting against the top of the cavity. In this configuration, the top protrusion can pass smoothly through the through hole, and the spring provides elastic restoring force for the movable column.

[0012] Preferably, the outer diameter of the bottom protrusion is smaller than the diameter of the through hole, the size of the protruding pin is adapted to the size of the pin hole, and under the elastic force of the spring, the bottom end of the movable column abuts against the bottom of the cavity. At this time, the top end of the top protrusion is retracted into the sleeve, and the protruding pin protrudes downward from the bottom surface of the box. In this configuration, the bottom protrusion can move through the through hole, the protrusion and the pin are matched to facilitate interlayer connection, and the spring keeps the protrusion in the protruding state.

[0013] Preferably, when multiple boxes are stacked vertically, the protruding pin in the upper box can be inserted into the pin hole in the lower adjacent box; In this configuration, the convex pin and the pin hole work together to achieve vertical positioning of multi-layer boxes, reducing horizontal offset during stacking.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The cardboard box with strong interlayer bonding has a support base that is a column with a triangular cross-section and fits tightly to the corners inside the box. The stability of the triangular structure enhances the load-bearing capacity of the corners in the vertical direction and reduces corner deformation when multiple layers are stacked. 2. The high-strength cardboard box with interlayer bonding is equipped with a positioning component, and the dimensions of the protrusion and pin hole in the positioning component are matched. When multiple boxes are stacked vertically, the protrusion of the upper box can be inserted into the pin hole of the lower adjacent box, which plays a role in vertical positioning and connection, and reduces horizontal offset during stacking. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the box body when it is closed in this utility model; Figure 2 This is a schematic diagram of the overall structure of the box body in this utility model when it is opened; Figure 3 This is a schematic diagram of the supporting structure in this utility model; Figure 4 This is an exploded view of the support base in this utility model; Figure 5 This is an exploded view of the positioning component in this utility model; The meanings of the labels in the diagram are as follows: 100. Box body; 110. Folded edge; 111. Clearance hole; 200. Support structure; 210. Support base; 211. Cavity; 212. Slot; 213. Through hole; 214. Block; 220. Positioning component; 221. Sleeve; 222. Movable column; 2221. Top protrusion; 2222. Pin hole; 2223. Spring; 2224. Bottom protrusion; 2225. Protruding pin. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-5 A cardboard box with strong interlayer bonding strength includes a box body 100 made of corrugated cardboard. The top four edges of the box body 100 are provided with folded edges 110, which can enhance the structural stability of the top edge of the box body 100. The four corners inside the box body 100 are provided with support structures 200. The support structure 200 includes a support seat 210 tightly bonded to the corner inside the box body 100 and a positioning component 220 sleeved in the support seat 210. The support structure 200 can improve the load-bearing capacity and interlayer bonding stability of the corners of the box body 100.

[0018] like Figure 3 and Figure 4 As shown, in this utility model, the support base 210 is made of plastic and has a column-shaped structure with a triangular cross-section. The triangular structure can distribute the force by utilizing its own stability. The top and bottom ends of the support base 210 abut against the top and bottom walls of the box 100 after it is closed, respectively, which can transfer the pressure on the top of the box 100 to the bottom and enhance the load-bearing capacity of the box 100 in the vertical direction.

[0019] like Figures 2-4 As shown, specifically, the positioning component 220 includes a plastic sleeve 221 vertically installed within the support base 210 and a plastic movable column 222 fitted within the sleeve 221 and capable of moving axially along the sleeve 221. The sleeve 221 provides a guide for the movable column 222. A cavity 211 is formed at the surface position corresponding to the inclined side of the support base 210, providing installation space for the positioning component 220. Slots 212 are formed at both the top and bottom ends of the cavity 211. The sleeve 221 has a hollow cylindrical structure, and its top and bottom ends are respectively inserted into the two slots 212, which can position and fix the sleeve 221. A plastic plug 214 is fixed at the opening of the slot 212, which restricts the end of the sleeve 221 within the slot 212, preventing the sleeve 221 from falling out of the slot 212.

[0020] like Figures 3-5As shown, the movable column 222 further includes a top protrusion 2221 at its top, with a pin hole 2222 at its top. The movable column 222 also includes a bottom protrusion 2224 at its bottom, with a pin 2225 at its bottom. The pin 2225 engages with the pin hole 2222 to achieve interlayer positioning connection. The support base 210 has through holes 213 at both its top and bottom ends, which communicate with the slot 212. The through holes 213 and the sleeve 221 are coaxial. The diameter of the through holes 213 is smaller than the outer diameter of the movable column 222, preventing the movable column 222 from passing through the through holes 213.

[0021] like Figure 5 As shown, the outer diameter of the top protrusion 2221 is smaller than the diameter of the through hole 213, allowing the top protrusion 2221 to move through the through hole 213. A metal spring 2223 is fitted on the outer circumferential surface of the top protrusion 2221. The bottom end of the spring 2223 abuts against the top end of the movable column 222, and the top end of the spring 2223 abuts against the top of the cavity 211. The spring 2223 can provide elastic restoring force when the movable column 222 moves.

[0022] like Figure 4 and Figure 5 As shown, it is worth noting that the outer diameter of the bottom protrusion 2224 is smaller than the diameter of the through hole 213, allowing the bottom protrusion 2224 to move through the through hole 213. The bottom protrusion 2224 can extend downward from the bottom end of the support base 210 through the through hole 213. The size of the protrusion 2225 is matched with the size of the pin hole 2222. Under the elastic force of the spring 2223, the bottom end of the movable column 222 abuts against the bottom of the cavity 211. At this time, the top end of the top protrusion 2221 retracts into the sleeve 221 to receive the protrusion 2225 of the upper box 100. At the same time, the protrusion 2225 protrudes downward from the bottom surface of the box 100 to be inserted into the pin hole 2222 of the lower box 100.

[0023] like Figure 2 As shown, it is worth noting that clearance holes 111 are provided at both corners of the folded edge 110 near the housing 100. The clearance holes 111 are aligned with the top of the support structure 200, which prevents the folded edge 110 from obstructing the top of the support structure 200. Through holes are provided at all four corners of the bottom surface of the housing 100. The through holes are aligned with the bottom of the support structure 200. These through holes are for the protruding pin 2225 to pass through, allowing the protruding pin 2225 to extend smoothly out of the bottom surface of the housing 100.

[0024] In addition, the distance between the top of the top protrusion 2221 and the bottom of the protrusion 2225 is less than the height of the box 100 after it is closed, so that the bottom of the bottom box 100 can fit against the placement plane when placed, avoiding the situation where the protruding protrusion 2225 will affect the placement of the box 100. When multiple boxes 100 are stacked vertically, the protrusion 2225 in the upper box 100 can be inserted into the pin hole 2222 in the lower adjacent box 100, realizing the vertical positioning connection of multiple boxes 100 and reducing horizontal offset during stacking.

[0025] In this embodiment, the cardboard box with strong interlayer bonding strength is used as follows: First, the box body 100 is closed, so that the top and bottom ends of the support base 210 abut against the top and bottom walls inside the box body 100, respectively. At this time, the movable column 222 is in its initial position under the action of the spring 2223. Then, when it is necessary to stack the boxes 100, the upper box body 100 is placed on top of the lower box body 100, so that the protrusion 2225 of the upper box body 100 is aligned with the pin hole 2222 of the lower box body 100. Next, under the gravity of the upper box body 100, the movable column 222 moves downward along the sleeve 221, and the protrusion 2225 passes through the through hole of the lower box body 100 and inserts into the pin hole 2222. Finally, the stacking of multiple boxes 100 is completed. The support base 210 enhances the load-bearing capacity at the corners of the box body 100, and the positioning component 220 realizes the vertical positioning connection between layers.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A carton of high interlayer bond strength comprising a carton body (100) characterised in that: Each of the four corners inside the housing (100) is provided with a support structure (200). The support structure (200) includes a support base (210) tightly bonded to the corner inside the housing (100) and a positioning component (220) fitted inside the support base (210). The support base (210) is a column-shaped structure with a triangular cross-section. The top and bottom ends of the support base (210) abut against the top and bottom walls of the housing (100) after it is closed. The positioning component (220) 220) includes a sleeve (221) vertically installed in the support base (210) and a movable column (222) sleeved in the sleeve (221) and capable of moving along the axial direction of the sleeve (221). The top of the movable column (222) is provided with a top protrusion (2221), and the top of the top protrusion (2221) is provided with a pin hole (2222). The bottom of the movable column (222) is provided with a bottom protrusion (2224), and the bottom of the bottom protrusion (2224) is provided with a protruding pin (2225).

2. The high interlayer bond strength carton of claim 1, wherein: The top of the box (100) is provided with folded edges (110) at all four edges. The folded edges (110) are provided with clearance holes (111) at the two corners of the box (100). The clearance holes (111) are aligned with the top of the support structure (200).

3. The high interlayer bonding strength carton of claim 1, wherein: The box body (100) has through holes at the four corners of its bottom surface. The position of the through holes is aligned with the bottom of the support structure (200). The through holes are used for the protruding pin (2225) to pass through.

4. The cardboard box with high interlayer bonding strength according to claim 1, characterized in that: A cavity (211) is provided at the surface position corresponding to the inclined side of the support base (210). Slots (212) are provided at both the top and bottom ends of the cavity (211). The sleeve (221) is a hollow cylindrical structure. The top and bottom ends of the sleeve (221) are respectively inserted into the two slots (212).

5. The high interlayer bond strength carton of claim 4, wherein: A plug (214) is fixed at the opening of the slot (212). The plug (214) restricts the end of the sleeve (221) within the slot (212). Both the top and bottom ends of the support base (210) are provided with through holes (213). The through holes (213) are connected to the slot (212). The through holes (213) are coaxial with the sleeve (221). The diameter of the through holes (213) is smaller than the outer diameter of the movable column (222).

6. The high interlayer bond strength carton of claim 5, wherein: The outer diameter of the top protrusion (2221) is smaller than the diameter of the through hole (213). A spring (2223) is sleeved on the outer peripheral surface of the top protrusion (2221). The bottom end of the spring (2223) abuts against the top end of the movable column (222), and the top end of the spring (2223) abuts against the top of the cavity (211).

7. The cardboard box with strong interlayer bonding according to claim 6, characterized in that: The outer diameter of the bottom protrusion (2224) is smaller than the diameter of the through hole (213). The size of the protrusion (2225) is matched with the size of the pin hole (2222). Under the elastic force of the spring (2223), the bottom end of the movable column (222) abuts against the bottom of the cavity (211). At this time, the top end of the top protrusion (2221) is retracted into the sleeve (221), and the protrusion (2225) protrudes downward from the bottom surface of the box (100).

8. The high interlayer bonding strength carton of claim 1, wherein: When multiple boxes (100) are stacked vertically, the protruding pin (2225) in the upper box (100) can be inserted into the pin hole (2222) in the lower adjacent box (100).

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