Integrated carton structure

By creating handles through slotting and cutting on the top panel of the cardboard box, and using reinforcing sheets and bending parts to interlock the handles, the problem of insufficient structural strength of the cardboard box handles is solved. This achieves high strength and easy assembly/disassembly of the handles, avoiding the environmentally unfriendly issues associated with adhesive reinforcement.

CN224075946UActive Publication Date: 2026-04-03ZHEJIANG GUANGYUAN PRINTING & PACKING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-05
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

The existing integrated handle structure of cardboard boxes is not strong enough and is easy to break. In addition, the adhesive reinforcement method is not environmentally friendly and is prone to aging, which affects the reuse of cardboard boxes.

Method used

The handles are formed by cutting grooves in the top plate, and the handles are interlocked and fixed by the design of reinforcing plates and bending parts, which enhances the structural strength and avoids the need for glue reinforcement.

Benefits of technology

The structural strength of the handle has been improved, reducing breakage, making it easier to operate, reducing damage to the carton, and increasing reusability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an integrated carton structure which comprises a carton body defined by a first side plate, a second side plate, a third side plate and a fourth side plate, and the top of the carton body is provided with a first top plate, a second top plate, a third top plate and a fourth side top plate which are connected with the first side plate, the second side plate, the third side plate and the fourth side plate in a one-to-one correspondence mode. A plurality of bottom plates which can be matched with each other to seal the bottom of the box body are arranged at the bottom of the box body, the surface of the third top plate is slotted and cut to form a first lifting handle and a second lifting handle which are symmetrical, and folding marks are arranged at the connecting positions of the first lifting handle and the third top plate and the connecting positions of the second lifting handle and the third top plate. The first top plate is provided with a first opening allowing the first handle and the second handle to penetrate through, a first bent part is arranged at the end, away from the box body, of the first top plate, first reinforcing pieces are arranged on the two sides of the first handle, a second bent part is arranged on the side, away from the first handle, of each first reinforcing piece, and second reinforcing pieces are arranged on the two sides of the second handle. And the reinforcing sheet II is provided with an opening II for the bending part II to pass through.
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Description

Technical Field

[0001] This utility model relates to the field of cardboard box technology, specifically to an integrated cardboard box structure. Background Technology

[0002] Currently, most cardboard box handles on the market are made of plastic. The cardboard box and plastic handle are manufactured separately and then assembled during the packaging process. This method is relatively complex, requiring manual insertion of the handles onto the box later, resulting in low efficiency and high cost. Furthermore, the plastic handles used are not environmentally friendly. One-piece cardboard box structures have emerged, integrating the box and handle into a single unit. These structures feature handles formed by cutting grooves in the top cover; the handle is simply pulled out of the groove for use. This design offers advantages such as being environmentally friendly, economical, and convenient. However, the structural strength of this type of box is relatively poor; the handles are prone to breakage under heavy loads. To address this, adhesive bonding has been used to increase strength. However, the adhesive is prone to aging and loss of stickiness, and the handles must be disassembled to load and unload items. This disassembly and reassembly process can easily damage the cardboard box, affecting its reusability. Summary of the Invention

[0003] The purpose of this utility model is to provide an integrated cardboard box structure that allows the cardboard box handle to have good structural strength without the use of adhesive.

[0004] To solve the above technical problems, this utility model adopts the following technical solution: an integrated cardboard box structure, including a box body surrounded by side plate one, side plate two, side plate three, and side plate four. The top of the box body is provided with top plate one, top plate two, top plate three, and side top plate four, which are connected to side plate one, side plate two, side plate three, and side top plate four respectively. The bottom of the box body is provided with several bottom plates that can cooperate with each other to seal the bottom of the box body. The surface of top plate three is grooved and cut to form two symmetrical handles one and two. The connection between handle one and handle two and the top plate three is provided with creases. The top plate one is characterized by having an opening one for handle one and handle two to pass through. The end of top plate one away from the box body is provided with a bending part one. The two sides of handle one are provided with reinforcing pieces one. The side of reinforcing piece one away from handle one is provided with a bending part two. The two sides of handle two are provided with reinforcing pieces two. The reinforcing piece two is provided with an opening three for bending part two to pass through.

[0005] Using the above technical solution, when sealing the top of the carton, firstly, top plate three is bent inwards towards the inside of the carton opening. Then, top plates two and four are bent inwards towards the inside of the carton opening, pressing the two sides of top plate three together. Next, handles one and two above top plate three are erected. Then, top plate one is bent inwards towards the inside of the carton opening, and handles one and two pass through opening one. The bent part one of top plate one is inserted into opening two, thus pressing the top plate three together. Next, the bent part two of reinforcing part one passes through opening three of reinforcing part two and is bent, so that handles one and two are interlocked and fixed. This gives handles one, handles two, and top plate three good structural strength. Compared with the existing technology, users can reduce the phenomenon of handles breaking when taking out the carton, and eliminate the need for adhesive reinforcement. When it is necessary to put in or take out items, the handles can be easily disassembled and reassembled, saving effort and reducing the damage to the carton.

[0006] As a further optimization of this utility model, the upper end of the second bending part is extended in the direction of bending, and the first reinforcing piece is L-shaped.

[0007] Using the above technical solution, when handle one and handle two approach and flip, after reinforcement one and reinforcement two approach each other, bending part two passes through opening three. The height of the upper end of bending part two is greater than the height of the upper end of opening three, forming a height difference, thereby preventing bending part two from coming out of opening three.

[0008] As a further optimization of this utility model, the top plate 2 and the top plate 4 are both provided with a bending part 3 at the end away from the box body, and the top plate 3 is provided with an opening 4 on both sides for the bending part 3 to pass through.

[0009] By adopting the above technical solution, when the bending part three passes through the opening four, the top plate two and the top plate four can press the two sides of the top plate three together, thereby improving the structural strength of the top plate three and further enhancing the tensile strength of the handle one and the handle two.

[0010] The beneficial effects of this utility model are as follows: When sealing the top of the carton, firstly, the top plate three is bent inwards towards the inside of the carton opening. Then, the top plates two and four are bent inwards towards the inside of the carton opening, pressing the two sides of the top plate three together. Next, the handles one and two above the top plate three are erected. Then, the top plate one is bent inwards towards the inside of the carton opening, and the handles one and two pass through the opening one. The bent part one of the top plate one is inserted into the opening two, thus pressing the top plate three together. Then, the bent part two of the reinforcing part one passes through the opening three of the reinforcing part two and is bent, so that the handles one and two are interlocked and fixed. Thus, the handles one, two, and the top plate three all have good structural strength. Compared with the existing technology, the phenomenon of handles breaking when users take out the carton can be reduced, and the method of using glue for reinforcement is eliminated. When it is necessary to put or take out things, the handles can be disassembled and assembled conveniently and effortlessly, reducing the damage to the carton. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the unfolded structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the usage state of this utility model. Figure 1 ;

[0013] Figure 3 This is a schematic diagram of the usage state of this utility model. Figure 2 .

[0014] The labels in the diagram mean: 11. Side panel 1; 12. Side panel 2; 13. Side panel 3; 14. Side panel 4; 21. Top panel 1; 22. Top panel 2; 23. Top panel 3; 24. Top panel 4; 31. Handle 1; 32. Handle 2; 41. Reinforcing plate 1; 42. Reinforcing plate 2; 51. Bending section 1; 52. Bending section 2; 53. Bending section 3; 54. Bending section 4; 61. Opening 1; 62. Opening 2; 63. Opening 3; 64. Opening 4; 65. Opening 5; 7. Base plate. Detailed Implementation

[0015] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0016] See appendix Figure 1-3 The present embodiment of the present utility model further provides: an integrated cardboard box structure, including a box body surrounded by side plate 11, side plate 22, side plate 33, and side plate 414. The top of the box body is provided with top plate 121, top plate 22, top plate 33, and side top plate 424 that are connected to side plate 11, side plate 22, side plate 33, and side top plate 414 respectively. The bottom of the box body is provided with a plurality of bottom plates 7 that can cooperate with each other to seal the bottom of the box body.

[0017] The surface of the top plate 323 is grooved to form two symmetrical handles 31 and 32. Both handles 31 and 32 have creases at their connection points with the top plate 323. The top plate 21 has an opening 61 for the handles 31 and 32 to pass through. A bent portion 51 is located at the end of the top plate 21 away from the box body. Reinforcing plates 41 are located on both sides of the handles 31. A bent portion 52 is located on the side of the reinforcing plate 41 away from the handles 31. Furthermore, the upper end of the bent portion 52 extends outwards. The reinforcing plate 41 is L-shaped. Reinforcing plates 2 are located on both sides of the handles 32, and the reinforcing plates 2 have openings 63 for the bent portions 52 to pass through.

[0018] Furthermore, both top plate 22 and top plate 4 24 are provided with a bending part 3 53 at the end away from the box body, and both sides of top plate 3 23 are provided with openings 4 64 for the bending part 3 53 to pass through.

[0019] The principle of this utility model is as follows: When sealing the top of the carton, the top plate 23 is first bent toward the inside of the box opening, and then the top plate 22 and the top plate 4 24 are bent toward the inside of the box opening. The bent part 53 passes through the opening 64. The top plate 22 and the top plate 4 24 can press the two sides of the top plate 23 together, thereby improving the structural strength of the top plate and further improving the tensile strength of the handle 31 and the handle 32.

[0020] Next, the handles 31 and 32 above the top plate 23 are erected. Then, the inside of the opening of the top plate 21 is bent, and the handles 31 and 32 pass through the opening 61. The bent part 51 of the top plate 21 is inserted into the opening 62, thereby pressing the top plate 23 together. The handles 31 and 32 are brought closer and flipped over. After the reinforcing part 1 and the reinforcing part 2 are brought closer, the bent part 52 passes through the opening 63. The height of the upper end of the bent part 52 is greater than the height of the upper end of the opening 63, forming a height difference, thereby preventing the bent part 52 from coming out of the opening 63. This makes the handles 31, 32 and the top plate 23 have good structural strength.

[0021] With existing technology, users can reduce the occurrence of handle breakage when taking out cardboard boxes, and eliminate the need for adhesive reinforcement. When it is necessary to put or take out items, the handle can be easily removed and installed, saving effort and reducing the chance of damage to the cardboard boxes.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. An integrated cardboard box structure, comprising a box body surrounded by side panels one (11), side panels two (12), side panels three (13), and side panels four (14), wherein the top of the box body is provided with top panels one (21), top panels two (22), top panels three (23), and side top panels four (24) corresponding to side panels one (11), side panels two (12), side panels three (13), and side top panels four (14), wherein the surface of top panel three (23) is grooved to form two symmetrical handles one (31) and handle two (32), and creases are provided at the connection points between handles one (31) and handle two (32) and the top top panel three (23), characterized in that, The top plate 1 (21) has an opening 1 (61) for the first handle 1 (31) and the second handle 2 (32) to pass through. The top plate 1 (21) has a bent part 1 (51) at the end away from the box body. The top plate 3 (23) has an opening 2 (62) for the bent part 1 (51) to pass through. The first handle 1 (31) has a reinforcing piece 1 (41) on both sides. The first reinforcing piece 1 (41) has a bent part 2 (52) on the side away from the first handle 1 (31). The second handle 2 (32) has a reinforcing piece 2 on both sides. The second reinforcing piece 2 has an opening 3 (63) for the bent part 2 (52) to pass through.

2. The integrated cardboard box structure according to claim 1, characterized in that, The upper end of the second bending part (52) is extended, and the first reinforcing piece (41) is L-shaped.

3. The integrated cardboard box structure according to claim 1, characterized in that, The top plate 2 (22) and the top plate 4 (24) are both provided with a bending part 3 (53) at the end away from the box body, and the top plate 3 (23) is provided with an opening 4 (64) on both sides for the bending part 3 (53) to pass through.