Carton easy to package
By designing a structure including a fixing plate, limiting holes, flexible connecting strips, limiting rods, tension springs, and a tension plate, the problems of cumbersome traditional cardboard box packaging and dangerous unpacking have been solved, achieving simple and quick packaging and a stable and breathable cardboard box design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MINGGUANG JINGCHENG PACKAGING CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional cardboard box sealing is cumbersome, requiring multiple wraps of tape and the use of knives for unpacking, which poses a danger.
The design incorporates a fixed plate, limiting holes, a flexible connecting strip, a limiting rod, a tension spring, and a pull plate. The movement of the limiting rod enables the opening and closing of the cover plate, while magnets and vent holes enhance stability and breathability.
It enables simple and quick sealing without the need for tape wrapping, reduces the risk of opening the package, and improves the stability of the cover and the air permeability of the carton.
Smart Images

Figure CN224211571U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cardboard box technology, specifically an easy-to-seal cardboard box. Background Technology
[0002] Cardboard boxes are containers used for packaging and transporting goods, usually made of cardboard. They have multiple uses and characteristics and are widely used in daily life and industrial fields. Traditional cardboard boxes generally require multiple layers of tape for sealing, which is cumbersome and makes sealing difficult. Furthermore, opening them often requires the use of knives for cutting, posing a certain degree of danger. Utility Model Content
[0003] To overcome the above-mentioned defects, this utility model provides an easy-to-seal cardboard box, which solves the problems of traditional cardboard boxes, which generally require wrapping with tape many times during sealing, making the operation cumbersome and difficult to seal, and also require the use of knives to cut during unsealing, which poses certain dangers.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an easy-to-seal cardboard box, comprising a cardboard box body, a first top cover plate connected to the top of the cardboard box body, a second top cover plate connected to the top of the cardboard box body, a plurality of fixing plates fixedly connected to the top of the first top cover plate, limit holes provided on the fixing plates, a plurality of upright plates fixedly connected to the top of the second top cover plate, a flexible connecting strip fixedly connected to the upright plates, and a connecting plate fixedly connected to the flexible connecting strip;
[0005] An L-shaped plate is fixedly connected to the connecting plate. A through hole is provided on the L-shaped plate. A limit rod is slidably connected inside the through hole. A pull plate is fixedly connected to one end of the limit rod. The end of the limit rod away from the pull plate is designed with an inclined surface. A tension spring is sleeved on the limit rod. One end of the tension spring is fixedly connected to the pull plate, and the other end of the tension spring is fixedly connected to the L-shaped plate.
[0006] As a further embodiment of this utility model: two fixing strips are fixedly connected inside the through hole, and two rectangular grooves are opened on the limiting rod, with the fixing strips located inside the rectangular grooves.
[0007] As a further embodiment of this utility model: several ventilation holes are provided on the front and back of the carton body, and handle holes are provided on both sides of the carton body.
[0008] As a further embodiment of this utility model: four first magnets are fixedly connected to the main body of the carton, and two second magnets are fixedly connected to both the first top cover plate and the second top cover plate.
[0009] As a further embodiment of this utility model: the second magnet corresponds to the position of the first magnet, and the limiting rod is located inside the limiting hole.
[0010] As a further embodiment of this utility model: the flexible connecting strip is located at the top of the carton body, and the pull plate has an arc surface design.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0012] 1. This easy-to-seal carton, through the setting of a fixed plate, limiting holes, flexible connecting strips, limiting rods, tension springs, and a pull plate, allows for easy unsealing of the first and second top covers when the first and second top covers need to be opened. Pulling the pull plate moves the limiting rod, causing it to disengage from the limiting holes, thus releasing the fixed state of the first and second top covers. When sealing the first and second top covers, hold the L-shaped plate and contact the inclined surface of the limiting rod with the fixed plate. Pressing the L-shaped plate downwards will push the limiting rod open, thus limiting its position. The rod drives the pull plate to move, which in turn stretches the tension spring. When the limiting rod moves to the limiting hole, it loses the support of the fixing plate, causing the tension spring to reset and pull the pull plate and the limiting rod to move. This allows the limiting rod to insert into the limiting hole, thus fixing the first top cover and the second top cover together and completing the sealing of the first and second top covers. This carton abandons the traditional method of sealing with tape, eliminating the need for multiple wraps of tape. The sealing is simple and quick, and no cutting tools are needed when unsealing, thus reducing the risk.
[0013] 2. This easy-to-seal carton, by incorporating a first magnet, a second magnet, and vent holes, allows the first and second top covers to attract each other when they are in the sealed state. This ensures a tight fit between the top covers and the carton body. Simultaneously, the vent holes enhance the internal air permeability of the carton body. The attraction between the first and second magnets effectively improves the stability of the top covers and the carton body, while the improved air permeability prevents moisture buildup inside the carton, thus avoiding product dampness. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is a three-dimensional structural diagram of the first top cover plate of this utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the L-shaped plate and the limiting rod separated in this utility model;
[0017] Figure 4 This is a three-dimensional structural diagram of the main body of the cardboard box of this utility model;
[0018] Figure 5 This is a three-dimensional structural diagram of the second top cover plate of this utility model;
[0019] In the diagram: 1. Carton body; 2. First top cover; 3. Second top cover; 4. Vertical plate; 5. Flexible connecting strip; 6. Connecting plate; 7. L-shaped plate; 8. Fixing plate; 9. Limiting hole; 10. Through hole; 11. Fixing strip; 12. Limiting rod; 13. Rectangular groove; 14. Tension spring; 15. Pull plate; 16. Ventilation hole; 17. Handle hole; 18. First magnet; 19. Second magnet. Detailed Implementation
[0020] The technical solution of this patent will be further described in detail below with reference to specific embodiments.
[0021] like Figure 1-5 As shown, this utility model provides a technical solution: an easy-to-seal cardboard box, including a cardboard box body 1, a first top cover plate 2 connected to the top of the cardboard box body 1, a second top cover plate 3 connected to the top of the cardboard box body 1, a plurality of fixing plates 8 fixedly connected to the top of the first top cover plate 2, and limiting holes 9 opened on the fixing plates 8, and a plurality of upright plates 4 fixedly connected to the top of the second top cover plate 3, and a plurality of ventilation holes 16 opened on the front and back of the cardboard box body 1. Because of the ventilation holes 16, the air permeability inside the cardboard box body 1 is improved. Good air permeability can prevent the product from getting damp due to the accumulation of moisture inside the cardboard box body 1. A handle hole 17 is opened on both sides of the cardboard box body 1. Because of the handle hole 17, the staff can easily lift the cardboard box body 1 by placing their hands inside the handle hole 17, thereby improving the convenience of operation.
[0022] A flexible connecting strip 5 is fixedly connected to the upright plate 4. The flexible connecting strip 5 is located at the top of the carton body 1. The pull plate 15 has an arc surface design. A connecting plate 6 is fixedly connected to the flexible connecting strip 5. An L-shaped plate 7 is fixedly connected to the connecting plate 6. A through hole 10 is opened on the L-shaped plate 7. A limit rod 12 is slidably connected inside the through hole 10.
[0023] A pull plate 15 is fixedly connected to one end of the limiting rod 12. The pull plate 15 increases the contact area of the limiting rod 12, making it easier for operators to pull the pull plate 15 to move the limiting rod 12, thus improving operational convenience. The end of the limiting rod 12 away from the pull plate 15 is designed with a slope. Because of this slope, when the slope of the limiting rod 12 contacts the fixing plate 8, the fixing plate 8 can easily push the limiting rod 12 away, ensuring the normal operation of subsequent work. A tension spring 14 is sleeved on the limiting rod 12. One end of the tension spring 14 is fixedly connected to the pull plate 15. Two fixing strips 11 are fixedly connected inside the through hole 10. Two rectangular grooves 13 are opened on the limiting rod 12. Because of the rectangular grooves 13 and the fixing strips 11, when the limiting rod 12 moves, the fixing strips 11 and the rectangular grooves 13 can limit the limiting rod 12, preventing the limiting rod 12 from rotating during movement and causing the inclined surface of the limiting rod 12 to shift, thereby ensuring the normal operation of the limiting rod 12. The fixing strips 11 are located inside the rectangular grooves 13.
[0024] The other end of the tension spring 14 is fixedly connected to the L-shaped plate 7. Four first magnets 18 are fixedly connected to the carton body 1. Two second magnets 19 are fixedly connected to the first top cover plate 2 and the second top cover plate 3. Because of the second magnets 19, the first top cover plate 2 and the second top cover plate 3 are tightly attached to the carton body 1 by the attraction between the second magnets 19 and the first magnets 18, which can effectively improve the stability of the first top cover plate 2 and the second top cover plate 3. The second magnets 19 and the first magnets 18 are in corresponding positions. The limiting rod 12 is located inside the limiting hole 9.
[0025] The working principle of this utility model is as follows:
[0026] When it is necessary to disassemble the first top cover plate 2 and the second top cover plate 3, pull the pull plate 15 to move the limiting rod 12, causing the limiting rod 12 to disengage from the limiting hole 9, thereby releasing the fixed state of the first top cover plate 2 and the second top cover plate 3. At this time, the first top cover plate 2 and the second top cover plate 3 can be disassembled. When it is necessary to reassemble the first top cover plate 2 and the second top cover plate 3, hold the L-shaped plate 7 and contact the inclined surface of the limiting rod 12 with the fixing plate 8. Press the L-shaped plate 7 down, and the fixing plate 8 will push the limiting rod 12 open, causing the limiting rod 12 to move the pull plate 15. The pull plate 15 will stretch the tension spring 14. When the limiting rod 12 moves to... When the limiting hole 9 is in place, the limiting rod 12 loses the support of the fixing plate 8, causing the tension spring 14 to reset and pull the pull plate 15 and the limiting rod 12 to move, so that the limiting rod 12 is inserted into the limiting hole 9, thereby fixing the first top cover plate 2 and the second top cover plate 3 together, completing the sealing work of the first top cover plate 2 and the second top cover plate 3; when the first top cover plate 2 and the second top cover plate 3 are in the sealed state, the second magnet 19 and the first magnet 18 will attract each other, so that the first top cover plate 2, the second top cover plate 3 and the carton body 1 are tightly attached, and the ventilation hole 16 can improve the air permeability inside the carton body 1.
[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0028] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.
Claims
1. An easy-to-seal cardboard box, comprising a cardboard box body (1), characterized in that: The top of the carton body (1) is connected to a first top cover plate (2), and the top of the carton body (1) is connected to a second top cover plate (3). The top of the first top cover plate (2) is fixedly connected to several fixing plates (8), and the fixing plates (8) have limit holes (9). The top of the second top cover plate (3) is fixedly connected to several upright plates (4), and the upright plates (4) are fixedly connected to flexible connecting strips (5). The flexible connecting strips (5) are fixedly connected to connecting plates (6). An L-shaped plate (7) is fixedly connected to the connecting plate (6). A through hole (10) is provided on the L-shaped plate (7). A limiting rod (12) is slidably connected inside the through hole (10). A pull plate (15) is fixedly connected to one end of the limiting rod (12). The end of the limiting rod (12) away from the pull plate (15) is designed with an inclined surface. A tension spring (14) is sleeved on the limiting rod (12). One end of the tension spring (14) is fixedly connected to the pull plate (15), and the other end of the tension spring (14) is fixedly connected to the L-shaped plate (7).
2. The easy-to-seal cardboard box according to claim 1, characterized in that: Two fixing strips (11) are fixedly connected inside the through hole (10), and two rectangular grooves (13) are opened on the limiting rod (12), with the fixing strips (11) located inside the rectangular grooves (13).
3. The easy-to-seal cardboard box according to claim 1, characterized in that: The cardboard box body (1) has several ventilation holes (16) on the front and back, and handle holes (17) on both sides.
4. The easy-to-seal cardboard box according to claim 1, characterized in that: Four first magnets (18) are fixedly connected to the main body (1) of the carton, and two second magnets (19) are fixedly connected to the first top cover plate (2) and the second top cover plate (3).
5. The easy-to-seal cardboard box according to claim 4, characterized in that: The second magnet (19) is positioned opposite to the first magnet (18), and the limiting rod (12) is located inside the limiting hole (9).
6. The easy-to-seal cardboard box according to claim 1, characterized in that: The flexible connecting strip (5) is located on the top of the carton body (1), and the pull plate (15) has an arc surface design.