Self-locking carton for postal goods
Through the design of self-locking components and toothed knife wire, the cumbersome problem of mail carton tape is solved, and quick packing and environmentally friendly closure are achieved, simplifying the unboxing process and protecting consumer privacy.
Patent Information
- Application Number
- CN202422190587.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-06
AI Technical Summary
Existing mail cartons generally use a lot of tape to bond, and the packing process is cumbersome and sharp external objects are required to be opened, which violates the concept of environmental protection.
Design self-locking components, including upper and lower self-locking grooves and toothed knife wires, to realize self-locking and rapid closure of the carton, avoiding the use of tape.
It realizes fast packing and environmentally friendly closure, reduces resource waste, protects consumer privacy, and simplifies the unboxing process.
Smart Images

Figure CN223174529U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of postal boxes, in particular to a self-locking paper box for postal items. Background Art
[0002] With the rapid development of the social economy, the modern logistics industry has also developed to an unprecedented level. As one of the important guarantees in the process of goods circulation, packaging has received more extensive attention. As a kind of packaging, paper boxes are widely used in all walks of life due to their high cost performance.
[0003] Currently, most of the postal paper boxes on the market are flat-mouth boxes, which are made by bonding a large amount of tape. The packing process is cumbersome, which not only increases the cost of merchants, goes against the energy-saving and environmental protection concept implemented by the country, but also consumers need to use sharp foreign objects to damage the tape to open the paper box, and the operation is also cumbersome. Content of the Utility Model
[0004] In order to make up for the deficiencies of the existing technology, the purpose of the utility model is to provide a self-locking component to block the bottom and top of the paper box, which solves the problem that most of the postal paper boxes on the market are flat-mouth boxes made by bonding a large amount of tape.
[0005] In order to solve the problems of the existing technology, the technical solution of the utility model is as follows: A self-locking paper box for postal items, including a front side plate, both ends of the front side plate are fixed with side plates, one side of the left side plate is fixed with a rear side plate, and one side of the rear side plate is also fixed with an adhesive plate. The front side plate, side plates, rear side plate and adhesive plate are of an integral structure. The upper side and the lower side of the side plate are respectively fixed with an upper stabilizing plate and a lower stabilizing plate. A self-locking component is provided to make the packing process more rapid and convenient. The self-locking component is respectively connected to the front side plate and the rear side plate.
[0006] Preferably, an upper inner plate is fixed on the upper side of the front side plate, an upper outer plate is fixed on the upper side of the rear side plate. An upper self-locking groove is opened on the outer wall of the upper inner plate, and an upper self-locking plate is fixed on the upper side of the upper outer plate. The outer wall of the upper self-locking plate is slidably connected to the inner wall of the upper self-locking groove. This is the self-locking structure of the upper part of the paper box.
[0007] Preferably, a lower inner plate is fixed on the lower side of the front side plate, a lower outer plate is fixed on the lower side of the rear side plate. A lower self-locking groove is opened on the outer wall of the lower inner plate, and a lower self-locking plate is fixed on the lower side of the lower outer plate. The outer wall of the lower self-locking plate is slidably connected to the inner wall of the lower self-locking groove. This is the self-locking structure of the lower part of the paper box.
[0008] Preferably, a toothed knife line is provided at the connection between the front side plate and the upper inner plate, and a tear opening is opened on the outer wall of the front side plate for conveniently opening the paper box.
[0009] Compared with the existing technology, the advantages of the utility model are as follows:
[0010] The utility model can seal the bottom of the carton by arranging a self-locking component, folding the lower inner plate, the lower stabilizing plates on both sides, the lower outer plate and the lower self-locking plate in sequence and inserting them along the inner wall of the lower self-locking groove. Then, turn the carton over, fold the upper stabilizing plate, the upper inner plate, the upper outer plate and the upper self-locking plate, and insert the upper self-locking plate along the inner wall of the upper self-locking groove to seal the top of the carton. Thereby, the packing process can be made quick and convenient, the carton can be kept closed without using extra tape or adhesive, reducing resource waste and environmental burden, and the stable structure can protect the mailed items.
[0011] By arranging a pulling tear opening in the utility model, when the tear opening pulls the cutter wire, the connection between the front side plate and the upper inner plate can be torn and broken, and the carton can be opened without using sharp foreign objects to damage the tape, which is convenient for consumers to break and open the carton while protecting the privacy of consumers. Description of the Drawings
[0012] Figure 1 is a schematic structural diagram of the whole utility model;
[0013] Figure 2 is a schematic structural diagram of the front side plate of the utility model;
[0014] Figure 3 is a schematic structural diagram of the lower outer plate of the utility model.
[0015] In the reference numerals: 1, front side plate; 2, side side plate; 3, rear side plate; 4, adhesion plate; 5, upper stabilizing plate; 6, lower stabilizing plate; 7, upper inner plate; 8, upper outer plate; 9, upper self-locking groove; 10, upper self-locking plate; 11, lower inner plate; 12, lower outer plate; 13, lower self-locking groove; 14, lower self-locking plate; 15, cutter wire; 16, tear opening. Detailed Embodiment
[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.
[0017] Please refer to Figures 1 - 3, A self-locking cardboard box for postal items, including a front side plate 1. Both ends of the front side plate 1 are fixed with side plates 2. One side of the left side plate 2 is fixed with a rear side plate 3. One side of the rear side plate 3 is also fixed with an adhesive plate 4. The front side plate 1, side plates 2, rear side plate 3 and adhesive plate 4 are of an integral structure. The upper side and lower side of the side plate 2 are respectively fixed with an upper stabilizing plate 5 and a lower stabilizing plate 6. A self-locking component is provided to make the packing process more rapid and convenient. The self-locking component is respectively connected to the front side plate 1 and the rear side plate 3. Specifically, the front side plate 1, side plates 2, rear side plate 3 and adhesive plate 4 form the main frame of the cardboard box, forming a closed space to accommodate postal items. The integral structure design among them enhances the overall structural strength of the cardboard box, making the cardboard box not easily deformed or damaged during transportation. The upper stabilizing plate 5 and the lower stabilizing plate 6 are respectively fixed on the upper side and lower side of the side plate 2, playing a role in strengthening the stability of the side wall of the cardboard box, which helps to prevent the cardboard box from deforming due to side pressure during stacking or transportation.
[0018] Please refer to Figures 1 - 2 , An upper inner plate 7 is fixed on the upper side of the front side plate 1, and an upper outer plate 8 is fixed on the upper side of the rear side plate 3. An upper self-locking groove 9 is opened on the outer wall of the upper inner plate 7. An upper self-locking plate 10 is fixed on the upper side of the upper outer plate 8. The outer wall of the upper self-locking plate 10 is slidably connected to the inner wall of the upper self-locking groove 9. This is the self-locking structure of the upper part of the cardboard box. A lower inner plate 11 is fixed on the lower side of the front side plate 1, and a lower outer plate 12 is fixed on the lower side of the rear side plate 3. A lower self-locking groove 13 is opened on the outer wall of the lower inner plate 11. A lower self-locking plate 14 is fixed on the lower side of the lower outer plate 12. The outer wall of the lower self-locking plate 14 is slidably connected to the inner wall of the lower self-locking groove 13. This is the self-locking structure of the lower part of the cardboard box. Specifically, the upper inner plate 7 and the upper outer plate 8 cooperate with the upper self-locking groove 9 and the upper self-locking plate 10 to form the self-locking structure of the upper part of the cardboard box. When the cardboard box is closed, the upper self-locking plate 10 will slide into the upper self-locking groove 9 to achieve the locking of the upper part. This design makes the top of the cardboard box more stable and not easily opened accidentally. The lower inner plate 11 and the lower outer plate 12 cooperate with the lower self-locking groove 13 and the lower self-locking plate 14 to form the self-locking structure of the lower part of the cardboard box. Although in actual application, the self-locking structure of the lower part is not as common as that of the upper part, it can also enhance the overall structural strength of the cardboard box and prevent the bottom from deforming when bearing weight. By setting the self-locking component, the lower inner plate 11, the two lower stabilizing plates 6 on both sides, the lower outer plate 12 and the lower self-locking plate 14 are respectively folded in sequence and inserted along the inner wall of the lower self-locking groove 13, then the bottom of the cardboard box can be sealed. Flip the cardboard box, fold the upper stabilizing plate 5, upper inner plate 7, upper outer plate 8 and upper self-locking plate 10, and insert the upper self-locking plate 10 along the inner wall of the upper self-locking groove 9, then the top of the cardboard box can be sealed. Thus, the packing process can be made rapid and convenient. The cardboard box can remain closed without using additional tape or adhesive, reducing resource waste and environmental burden, as well as having a stable structure to protect postal items.
[0019] Please refer to Figure 1 andFigure 3 , a toothed knife line 15 is provided at the connection between the front side plate 1 and the upper inner plate 7. An unsealing opening 16 is provided on the outer wall of the front side plate 1 for conveniently opening the carton. By setting and pulling the unsealing opening 16, the unsealing opening 16 pulls the toothed knife line 15, and the connection between the front side plate 1 and the upper inner plate 7 can be torn and broken. Without using sharp foreign objects to damage the tape, the carton can be opened, which is convenient for consumers to open the carton while destroying it and protects the privacy of consumers.
[0020] During use, the operator folds the two side plates 2 along the connection between the front side plate 1 and the side plates 2 to be perpendicular to the front side plate 1, folds the rear side plate 3 along the connection between the side plates 2 and the rear side plate 3 to be parallel to the front side plate 1, folds the adhesive plate 4 along the connection between the rear side plate 3 and the adhesive plate 4 to overlap with the side plates 2, and adheres the outer wall of the adhesive plate 4 to the inner wall of the side plates 2. At this time, the carton is in the shape of a square cylinder with an open top and bottom. Fold the lower inner plate 11 along the connection between the front side plate 1 and the lower inner plate 11 to be perpendicular to both the front side plate 1 and the two side plates 2. Fold the two lower stabilizing plates 6 along the connection between the side plates 2 and the lower stabilizing plates 6 towards the middle to be parallel to the lower inner plate 11 and partially press on both sides of the bottom of the lower inner plate 11. Fold the lower outer plate 12 along the connection between the rear side plate 3 and the lower outer plate 12 to be perpendicular to both the front side plate 1 and the two side plates 2 and partially press on the middle of the bottom of the two lower stabilizing plates 6. Fold the lower self-locking plate 14 along the connection between the lower outer plate 12 and the lower self-locking plate 14 to be perpendicular to the lower outer plate 12. At this time, the lower self-locking plate 14 just aligns with the lower self-locking groove 13. Insert the lower self-locking plate 14 along the inner wall of the lower self-locking groove 13 to seal the bottom of the carton. Flip the carton. Fold the two upper stabilizing plates 5 along the connection between the side plates 2 and the upper stabilizing plates 5 towards the middle to be perpendicular to both the front side plate 1 and the two side plates 2. Fold the upper inner plate 7 along the connection between the front side plate 1 and the upper inner plate 7 to be perpendicular to the front side plate 1 and press on the top of the two upper stabilizing plates 5. Fold the upper outer plate 8 along the connection between the rear side plate 3 and the upper outer plate 8 to be parallel to the upper inner plate 7 and partially press on the top of the upper inner plate 7. Fold the upper self-locking plate 10 along the connection between the upper outer plate 8 and the upper self-locking plate 10 to be perpendicular to the upper outer plate 8. At this time, the upper self-locking plate 10 just aligns with the upper self-locking groove 9. Insert the upper self-locking plate 10 along the inner wall of the upper self-locking groove 9 to seal the top of the carton. When the carton needs to be opened, pull the unsealing opening 16, and the unsealing opening 16 pulls the toothed knife line 15, and the connection between the front side plate 1 and the upper inner plate 7 can be torn and broken, which is convenient for consumers to open the carton while destroying it and protects the privacy of consumers.
[0021] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A self-locking carton for postal items, comprising a front side plate (1), both ends of the front side plate (1) are fixedly connected with side side plates (2), and one side of the left side side plate (2) is fixedly connected with a rear side plate (3), characterized in that: One side of the rear side plate (3) is fixedly connected with an adhesion plate (4). The front side plate (1), the side side plates (2), the rear side plate (3) and the adhesion plate (4) are of an integral structure. The upper side of the side side plates (2) is fixedly connected with an upper stabilizing plate (5), and the lower side of the side side plates (2) is fixedly connected with a lower stabilizing plate (6). A self-locking assembly, which is used to make the packing process more rapid and convenient. The self-locking assembly is respectively connected with the front side plate (1) and the rear side plate (3).
2. The self-locking carton for postal items according to claim 1, wherein: The self-locking assembly includes an upper inner plate (7) fixedly connected to the upper side of the front side plate (1), and an upper outer plate (8) fixedly connected to the upper side of the rear side plate (3).
3. The self-locking carton for mailed articles according to claim 2, characterized in that: An upper self-locking groove (9) is formed in the outer wall of the upper inner plate (7). An upper self-locking plate (10) is fixedly connected to the upper side of the upper outer plate (8), and the outer wall of the upper self-locking plate (10) is slidably connected with the inner wall of the upper self-locking groove (9).
4. The self-locking carton for mailed articles according to claim 1, characterized in that: A lower inner plate (11) is fixedly connected to the lower side of the front side plate (1), and a lower outer plate (12) is fixedly connected to the lower side of the rear side plate (3).
5. The self-locking carton for mailed articles according to claim 4, characterized in that: A lower self-locking groove (13) is formed in the outer wall of the lower inner plate (11). A lower self-locking plate (14) is fixedly connected to the lower side of the lower outer plate (12), and the outer wall of the lower self-locking plate (14) is slidably connected with the inner wall of the lower self-locking groove (13).
6. The self-locking carton for mailed articles according to claim 2, characterized in that: A toothed knife line (15) is arranged at the joint of the front side plate (1) and the upper inner plate (7), and a tear seal (16) is formed in the outer wall of the front side plate (1).