A tear-off anti-theft lock lunch box

By using a tear-off anti-theft lock structure and a multi-storage slot design, the problems of unstable latching and poor sealing of the lunch box lid are solved, thereby improving the stability and sealing of the lid, preventing theft and facilitating food sorting.

CN224936683UActive Publication Date: 2026-11-06WUJIANG BODA ELECTRONICS TECH
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Patent Information

Application Number
CN202522630813.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-11
Publication Date
2026-11-06
Estimated Expiration
2035-12-11

AI Technical Summary

Technical Problem

The existing lunchbox lids are not very stable when attached to the upper part of the lunchbox body, and their sealing is insufficient, making it easy for others to steal the food.

Method used

It adopts a tear-off anti-theft lock structure, including a first positioning plate on the outside of the lid and an anti-theft lock bar. It is connected to the second positioning plate of the food container body. Tear-off buckles and limiting protrusions are set at both ends of the anti-theft lock bar to enhance the stability of the lid. The interior is designed with multiple storage slots and a sealed inner lid to improve the sealing performance.

Benefits of technology

The lid's stability on the food container is improved, preventing theft. A tear-off mechanism helps determine if food has been stolen. The container's airtightness is also enhanced, facilitating food categorization and storage.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a tear-off anti-theft lock lunchbox, including a lunchbox body and a lid. The lunchbox body and lid are snap-fitted together. A first positioning plate is provided on the outside of the lid. An anti-theft lock rod is slidably inserted into the lower end of the first positioning plate. A second positioning plate is provided on the upper outer wall of the lunchbox body. The anti-theft lock rod is inserted into a locking hole in the second positioning plate. Both ends of the anti-theft lock rod are provided with tear-off buckles and limiting protrusions. This utility model utilizes the first positioning plate and the anti-theft lock rod on the outside of the lid, and the anti-theft lock rod is inserted into the locking hole in the second positioning plate on the outside of the lunchbox body to snap and fix the lid snapped onto the upper part of the lunchbox body, which facilitates the improvement of the stability of the lid snapped onto the upper part of the lunchbox body. Moreover, the tear-off buckles and limiting protrusions at both ends of the anti-theft lock rod can lock the anti-theft lock rod inserted into the second positioning plate, preventing outsiders from opening the lid and stealing food.
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Description

Technical Field

[0001] This utility model relates to the field of lunch box technology, specifically a tear-off anti-theft lock lunch box. Background Technology

[0002] Disposable food containers are made of materials such as plastic, paper, starch, wood, and rare metals, primarily used for packaging meals. Common types include plastic, paper, starch, wood, and rare metal containers. Polypropylene is the mainstream material for manufacturing due to its high temperature resistance, non-toxicity, high plasticity, and low production cost, and it is suitable for microwave heating; its products are usually marked with a triangle and the number 5 on the bottom. Polystyrene (PS) has high hardness but poor heat resistance, and is mostly used for low-temperature food packaging; it is marked with the number 6. Paper food containers are coated with polyethylene and can withstand temperatures up to 90°C, but are not suitable for microwave heating. Aluminum foil food containers are prohibited from microwave use due to their metallic properties. Environmentally friendly alternatives include biodegradable plastic food containers and fully biodegradable food containers.

[0003] An existing patent application (application number 202122253070.6) describes an anti-theft sealed lunchbox. This lunchbox includes at least a box body, a lid, and an anti-theft sealing structure. The lid fastens onto the top of the box body. An anti-theft sealing structure is provided on the outer ring of the connection between the box body and the lid, surrounding the outer ring and forming a U-shaped groove with the groove opening upwards. The portion of the lid that fastens to the box body falls completely within the U-shaped groove. When the lunchbox is closed, the lid is located in the U-shaped groove formed by the anti-theft sealing structure and the box body. Users cannot directly access the edge of the lid to open it; they must break the anti-theft latch to open the lid from the notch. Furthermore, the anti-theft latch is a one-time disassembly component and cannot be reassembled after disassembly, effectively preventing others from stealing food from the lunchbox. However, the lid's stability when fastened to the top of the lunchbox body is poor, and the sealing of the inner storage cup for storing food is also poor. Utility Model Content

[0004] The purpose of this utility model is to provide a tear-off anti-theft lock lunch box to solve the problems of poor stability of the lid when it is attached to the upper part of the lunch box body and poor sealing of the inner storage cup when storing food in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tear-off type anti-theft lock lunch box, including a lunch box body and a lid, wherein the lunch box body and the lid are snap-fitted together, a first positioning plate is provided on the outer side of the lid, an anti-theft lock rod is slidably inserted into the lower end of the first positioning plate, a second positioning plate is provided on the upper outer wall of the lunch box body, the anti-theft lock rod is inserted into the locking hole in the second positioning plate, and a tear-off buckle and a limiting protrusion are respectively provided at both ends of the anti-theft lock rod.

[0006] Furthermore, the first positioning plate is provided in two sets symmetrically about the center of the lid, and the second positioning plate is provided in two sets symmetrically about the center of the food container body. A handle is provided on the upper side of the lid.

[0007] Furthermore, the outer wall of the snap-fit ​​seat on the upper side of the lunch box body is provided with a sealing protrusion, and the inner wall of the lid is provided with a sealing groove that engages with the sealing protrusion.

[0008] Furthermore, the interior of the lunchbox is divided into a first storage compartment and a second storage compartment by a partition. There are multiple first storage compartments, and the second storage compartment is located in the middle of the multiple first storage compartments.

[0009] Furthermore, an inner storage cup is inserted longitudinally into the second storage slot, and a sealing inner cover is provided at the lower center of the box lid to engage with the upper part of the inner storage cup.

[0010] Furthermore, the tear-off buckle adopts a non-elastically recoverable foam structure, and the limiting protrusion is set as a trapezoidal protrusion.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This utility model utilizes a first positioning plate and an anti-theft lock rod on the outer side of the lid. The anti-theft lock rod is inserted into a locking hole in the second positioning plate on the outside of the lunchbox body to secure the lid, which is attached to the upper part of the lunchbox body. This improves the stability of the lid being attached to the upper part of the lunchbox body. Furthermore, the anti-theft lock rod has a tear-off buckle and a limiting protrusion at both ends, which can lock the anti-theft lock rod inserted in the second positioning plate to prevent outsiders from opening the lid and stealing food. The tear-off buckle is made of non-elastic foam structure, so the tear-off buckle must be torn off when an outsider forcibly opens the lid, thus determining whether the food inside the lunchbox has been stolen.

[0012] This utility model utilizes a partition inside the lunchbox to separate a first storage compartment and a second storage compartment. There are multiple first storage compartments, and the second storage compartment is located in the middle of the multiple first storage compartments, which facilitates the classification and storage of food. At the same time, a sealing inner cover is provided in the middle of the lower part of the lid, which is inserted into the upper part of the inner storage cup to seal the opening of the second storage compartment where the inner storage cup is inserted, thereby improving the airtightness of the inner storage cup when storing food. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the box lid structure of this utility model; Figure 3This is a schematic diagram of the lunchbox structure of this utility model; Figure 4 This is an enlarged schematic diagram of the structure at point A of this utility model.

[0014] In the diagram: 1. Lunchbox body; 2. Lid; 3. First positioning plate; 4. Second positioning plate; 5. Anti-theft lock bar; 6. Handle; 7. Sealed inner cover; 8. Divider; 9. First storage compartment; 10. Second storage compartment; 11. Inner storage cup; 12. Locking hole; 13. Sealing groove; 14. Sealing protrusion; 15. Tear-off buckle; 16. Limiting protrusion. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0016] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 In this embodiment of the utility model, a tear-off anti-theft lock lunch box includes a lunch box body 1 and a lid 2. The lunch box body 1 and the lid 2 are snap-fitted together. A first positioning plate 3 is provided on the outer side of the lid 2. An anti-theft lock rod 5 is slidably inserted into the lower end of the first positioning plate 3. A second positioning plate 4 is provided on the upper outer wall of the lunch box body 1. The anti-theft lock rod 5 is inserted into the locking hole 12 in the second positioning plate 4. Two sets of first positioning plates 3 are symmetrically arranged about the center of the lid 2, and two sets of second positioning plates 4 are symmetrically arranged about the center of the lunch box body 1. A handle 6 is provided on the upper side of the lid 2. A sealing protrusion 14 is provided on the outer wall of the snap-fit ​​seat on the upper side of the lunch box body 1. A sealing groove 13 is provided on the inner wall of the lid 2 to snap-fit ​​with the sealing protrusion 14, which is used to snap and fix the lid 2 snapped onto the upper part of the lunch box body 1, so as to improve the stability of the lid 2 snapped onto the upper part of the lunch box body 1.

[0017] like Figure 1 , Figure 2 and Figure 4 As shown, in order to determine whether the food in the lunch box has been stolen, a tear-off buckle 15 and a limiting protrusion 16 are respectively provided at both ends of the anti-theft lock bar 5. The anti-theft lock bar 5 inserted into the second positioning plate 4 can be locked to prevent outsiders from opening the lid 2 and stealing food. The tear-off buckle 15 adopts a foam structure that cannot be elastically restored, so that when outsiders forcibly open the lid 2, the tear-off buckle 15 needs to be torn off, thereby determining whether the food in the lunch box has been stolen. The limiting protrusion 16 is set as a trapezoidal protrusion.

[0018] like Figure 2 and Figure 3 As shown, in order to improve the airtightness of the inner storage cup 11 for storing food, a first storage slot 9 and a second storage slot 10 are provided inside the lunch box body 1 through a partition 8. There are multiple first storage slots 9, and the second storage slot 10 is located in the middle of the multiple first storage slots 9. The inner storage cup 11 is inserted vertically into the second storage slot 10, which facilitates the classification and storage of food. The lower middle part of the box lid 2 is provided with a sealing inner cover 7 that is inserted and matched with the upper part of the inner storage cup 11. This is used to seal the opening at the end of the second storage slot 10 where the inner storage cup 11 is inserted, thereby improving the airtightness of the inner storage cup 11 for storing food.

[0019] The working principle and usage process of this utility model are as follows: In use, the first positioning plate 3 and the anti-theft lock rod 5 are provided on the outer side of the lid 2. The anti-theft lock rod 5 is inserted into the locking hole 12 in the second positioning plate 4 on the outside of the lunch box body 1 to fix the lid 2 that is attached to the upper part of the lunch box body 1, thereby improving the stability of the lid 2 attached to the upper part of the lunch box body 1. Moreover, the anti-theft lock rod 5 is provided with a tear-off buckle 15 and a limiting protrusion 16 at both ends, which can lock the anti-theft lock rod 5 inserted in the second positioning plate 4 to prevent outsiders from opening the lid 2 and stealing food. Furthermore, the tear-off buckle 15 is made of non-elastic foam structure, so that when outsiders forcibly open the lid 2, the tear-off buckle 15 must be torn off to determine whether the food inside the lunch box has been stolen.

[0020] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tear-away anti-theft lock buckle lunch box comprising a lunch box body (1) and a box cover (2), characterized in that: The lunch box body (1) and the lid (2) are snap-fitted together. The lid (2) is provided with a first positioning plate (3) on the outside. The lower end of the first positioning plate (3) is slidably inserted with an anti-theft lock rod (5). The upper outer wall of the lunch box body (1) is provided with a second positioning plate (4). The anti-theft lock rod (5) is inserted into the second positioning plate (4). The anti-theft lock rod (5) is provided with a tear-off buckle (15) and a limiting protrusion (16) at both ends.

2. A tear-away anti-theft lockable lunch box according to claim 1, characterized in that: The first positioning plate (3) is provided in two sets symmetrically about the center of the lid (2), and the second positioning plate (4) is provided in two sets symmetrically about the center of the food container body (1).

3. A tear-off anti-theft lock lunchbox according to claim 2, characterized in that: The outer wall of the snap-fit ​​seat on the upper side of the lunch box body (1) is provided with a sealing protrusion (14), and the inner wall of the lid (2) is provided with a sealing groove (13) that engages with the sealing protrusion (14).

4. A tear-off anti-theft lock lunchbox according to claim 1, characterized in that: The interior of the lunch box body (1) is divided into a first storage slot (9) and a second storage slot (10) by a partition (8). There are multiple first storage slots (9), and the second storage slot (10) is located in the middle of the multiple first storage slots (9).

5. A tear-off anti-theft lock lunchbox according to claim 4, characterized in that: An inner storage cup (11) is inserted longitudinally into the second storage slot (10), and a sealed inner cover (7) is provided at the lower middle part of the box cover (2) to be inserted and matched with the upper part of the inner storage cup (11).

6. A tear-off anti-theft lock lunchbox according to claim 1, characterized in that: The tear-off buckle (15) is made of a foam structure that cannot be elastically restored, and the limiting protrusion (16) is set as a trapezoidal protrusion.

Citation Information

Patent Citations

  • Anti-theft sealed meal box

    CN215837500U