A heat-insulating and theft-proof lunch box

Abstract

This invention provides an insulated and anti-theft lunch box, comprising: a disposable insulated bag and a disposable lunch box; the disposable insulated bag is provided with a receiving cavity, a bag opening, a first through hole, a second through hole, a first tear-off portion, and a second tear-off portion, the bag opening, the first through hole, and the second through hole all communicating with the receiving cavity; the disposable lunch box is provided with a first anti-theft strip and a second anti-theft strip on both sides, the first anti-theft strip is provided with a plurality of limiting buckles, the limiting buckles being located at the ends of the first anti-theft strip, and the second anti-theft strip is provided with limiting holes. The insulated and anti-theft lunch box of this invention has a simple structure, satisfying the need for heat preservation, allowing the disposable lunch box to be stably stored inside the disposable insulated bag, preventing it from easily tipping over relative to the bag, and making it difficult to remove the lunch box after the merchant has packaged it unless maliciously damaged to remove the anti-theft status, thus achieving an anti-theft effect, allowing users to eat with peace of mind and providing a better user experience.

Description

Technical Field

[0001] This invention relates to the field of lunch box technology, specifically to an insulated and theft-proof lunch box. Background Technology

[0002] A typical lunchbox consists of a body and a lid, which are completely separate components. The lid can be removed for easy serving, and the lid is replaced after the food is filled. The lid and body are then joined using a locking mechanism, and the lunchbox is placed inside an insulated bag. However, existing lunchboxes and insulated bags are not tightly connected, and the bags can be easily opened. This means that during the journey from the store to the customer, the insulated bag can be opened, posing a risk of food theft. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the prior art and provide an insulated and theft-proof lunch box.

[0004] One embodiment of the present invention provides an insulated and theft-proof lunch box, comprising: a disposable insulated bag and a disposable lunch box;

[0005] The disposable insulated bag is provided with a receiving cavity, a bag opening, a first through hole, a second through hole, a first tear-off part, and a second tear-off part. The bag opening, the first through hole, and the second through hole are all connected to the receiving cavity. The first through hole and the second through hole are respectively located on both sides of the bag opening. The first tear-off part is arranged between the first through hole and the bag opening and extends in the direction from the first through hole to the bag opening. The second tear-off part is arranged between the second through hole and the bag opening and extends in the direction from the second through hole to the bag opening.

[0006] The disposable lunch box is provided with a first anti-theft strip and a second anti-theft strip on both sides respectively. The first anti-theft strip is provided with a plurality of limiting buckles, which are located at the ends of the first anti-theft strip. The second anti-theft strip is provided with limiting holes.

[0007] When the insulated and anti-theft lunch box is in the anti-theft packaging state, the disposable lunch box is placed in the accommodating cavity. The first anti-theft strip extends from the first through hole to the outside of the disposable insulated bag, and the second anti-theft strip extends from the second through hole to the outside of the disposable insulated bag. The first anti-theft strip passes through the limiting hole so that part of the second anti-theft strip is located between the limiting buckle and the first through hole. The limiting buckle cooperates with the second anti-theft strip to limit the second anti-theft strip from detaching from the first anti-theft strip. The first anti-theft strip and the second anti-theft strip cooperate to close the bag opening.

[0008] In some alternative embodiments, when the insulated and anti-theft food box is de-packed, the first tear portion is broken to form a first channel between the first through hole and the edge of the bag opening for the first anti-theft strip to pass through, and the second tear portion is broken to form a second channel between the second through hole and the edge of the bag opening for the second anti-theft strip to pass through.

[0009] In some alternative embodiments, the first anti-theft strip is provided with a plurality of the aforementioned limiting buckles, which are arranged sequentially in the direction close to the root of the first anti-theft strip.

[0010] In some optional embodiments, the limiting buckle has a guide ring surface and a limiting ring surface, both of which are arranged around the first anti-theft strip. The guide ring surface is located on the side of the limiting buckle facing the end of the first anti-theft strip, and the inner diameter of the guide ring surface gradually decreases in the direction close to the end of the first anti-theft strip. The limiting ring surface is located on the side of the limiting buckle facing the root of the first anti-theft strip. When the insulated anti-theft lunch box is in the anti-theft packaging state, the limiting ring surface engages with the second anti-theft strip for limiting.

[0011] In some optional embodiments, when the insulated and anti-theft lunch box is in the anti-theft packaging state, the first anti-theft strip and the second anti-theft strip cooperate to press a portion of the disposable insulated bag against the disposable lunch box so that the portions of the disposable insulated bag located on both sides of the bag opening overlap each other.

[0012] In some alternative implementations, both the first and second anti-theft strips are rotatably engaged with the disposable lunch box.

[0013] In some alternative embodiments, when the insulated and anti-theft lunch box is in the anti-theft packaging state, the inner diameter of the limiting hole gradually decreases in the direction close to the limiting buckle.

[0014] In some optional embodiments, the disposable insulated bag is provided with a plurality of first through holes and a plurality of second through holes, the plurality of first through holes being arranged sequentially in the direction near the bag opening, the plurality of second through holes being arranged sequentially in the direction near the bag opening, the first tear-off portion being located between adjacent first through holes and between the first through holes and the bag opening, and the second tear-off portion being located between adjacent second through holes and between the second through holes and the bag opening.

[0015] In some optional embodiments, the first tearing portion includes a plurality of first tearing holes, which are arranged sequentially along the direction from the first through hole to the bag opening;

[0016] The second tear section includes a plurality of second tear holes, which are arranged sequentially along the direction from the second through hole to the bag opening.

[0017] Compared to existing technologies, the insulated and anti-theft lunch box of the present invention has a simple structure. It not only meets the need for heat preservation, but also allows the disposable lunch box to be stably stored in the disposable insulated bag, making it less likely to tip over relative to the disposable insulated bag. Moreover, once the merchant has packaged it, it is difficult to remove the lunch box inside unless it is maliciously damaged to remove the anti-theft status, thus achieving the anti-theft effect and allowing users to eat with peace of mind, resulting in a better user experience.

[0018] To provide a clearer understanding of the present invention, the specific embodiments of the present invention will be described below in conjunction with the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the insulated and anti-theft lunch box according to the first embodiment of the present invention in the anti-theft packaging state;

[0020] Figure 2 This is a schematic diagram of the structure of a disposable insulated bag according to the first embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional view of a disposable lunch box according to the first embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the insulated and anti-theft lunch box according to the first embodiment of the present invention when it is in the anti-theft packaging state;

[0023] Figure 5 This is a schematic diagram of the structure of the insulated and anti-theft lunch box according to the second embodiment of the present invention when it is in the anti-theft packaging state;

[0024] Figure 6 for Figure 3 The enlarged view at point A is shown below;

[0025] Figure 7 This is a schematic diagram of the structure of the disposable lunch box according to the first embodiment of the present invention after the anti-theft packaging of the insulated and anti-theft lunch box has been removed;

[0026] Figure 8 This is a schematic diagram of the structure of the insulated and anti-theft lunch box according to the third embodiment of the present invention when it is in the anti-theft packaging state;

[0027] Figure 9 This is a schematic diagram of the structure of the insulated and anti-theft lunch box according to the fourth embodiment of the present invention when it is in the anti-theft packaging state.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Disposable insulated bag; 11. Receptacle; 12. First through hole; 13. Second through hole; 14. First tear-off part; 15. Second tear-off part; 20. Disposable lunch box; 21. First anti-theft strip; 211. Limiting buckle; 212. Guide ring surface; 213. Limiting ring surface; 214. Positioning protrusion; 22. Second anti-theft strip; 221. Limiting hole; 222. Limiting seat; 31. Box lid; 32. Box body. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In the description of the present invention, unless otherwise stated, "a plurality of" means two or more, and "a number" means one or more. Furthermore, unless otherwise stated, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] In the description of this invention, references to terms such as "one embodiment," "some alternative implementations," or "some optional embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] Please see Figures 1 to 3 One embodiment of the present invention provides an insulated and theft-proof lunch box, comprising: a disposable insulated bag 10 and a disposable lunch box 20;

[0035] The disposable insulated bag 10 is provided with a receiving cavity 11, a bag opening, a first through hole 12, a second through hole 13, a first tear-off part 14, and a second tear-off part 15. The bag opening, the first through hole 12, and the second through hole 13 are all connected to the receiving cavity 11. The first through hole 12 and the second through hole 13 are respectively located on both sides of the bag opening. The first tear-off part 14 is arranged between the first through hole 12 and the bag opening and extends in the direction from the first through hole 12 to the bag opening. The second tear-off part 15 is arranged between the second through hole 13 and the bag opening and extends in the direction from the second through hole 13 to the bag opening.

[0036] The disposable lunch box 20 is provided with a first anti-theft strip 21 and a second anti-theft strip 22 on both sides. The first anti-theft strip 21 is provided with a number of limiting buckles 211, which are located at the end of the first anti-theft strip 21. The second anti-theft strip 22 is provided with limiting holes 221.

[0037] Please see Figure 4 When the insulated and anti-theft lunch box is in the anti-theft packaging state, the disposable lunch box 20 is placed in the containing cavity 11. The first anti-theft strip 21 extends from the first through hole 12 to the outside of the disposable insulated bag 10, and the second anti-theft strip 22 extends from the second through hole 13 to the outside of the disposable insulated bag 10. The first anti-theft strip 21 passes through the limiting hole 221 so that part of the second anti-theft strip 22 is located between the limiting buckle 211 and the first through hole 12. The limiting buckle 211 and the second anti-theft strip 22 limit each other to prevent the second anti-theft strip 22 from detaching from the first anti-theft strip 21. The first anti-theft strip 21 and the second anti-theft strip 22 work together to close the bag opening. Since the first anti-theft strip 21 and the second anti-theft strip 22 cannot be separated, it is difficult to open the bag opening to take out the disposable lunch box 20, or it is difficult to put a hand into the containing cavity 11 through the gap of the bag opening to open the disposable lunch box 20, thereby preventing malicious taking of the disposable lunch box 20 and preventing theft.

[0038] Please see Figure 5It should be noted that the first anti-theft strip 21 and the second anti-theft strip 22, when used together to close the bag opening, must ensure that the bag opening is completely closed, preventing any operation of the disposable lunch box 20 inside the containing cavity 11 through the bag opening, thus preventing the disposable lunch box 20 from being opened. Alternatively, the containing cavity 11 can be designed to be deep enough to prevent access through the gap in the bag opening to operate the disposable lunch box 20 located at the bottom of the containing cavity 11. Furthermore, the lid of the disposable lunch box 20 can be a flip-top design, with the lid 31 and the box body 32 engaging in a snap-fit ​​mechanism. This not only makes it difficult to open the lid 31, but even if the snap-fit ​​mechanism between the lid 31 and the box body 32 is accidentally released, the first and second anti-theft strips 21 and 22 will prevent the lid 31 from being opened, thus preventing the lid 31 from being opened. In addition, since the first anti-theft strip 21 and the second anti-theft strip 22 mainly press the middle of the bag opening, gaps may easily appear on both sides of the bag opening. These gaps can be sealed together using a binding machine to improve the anti-theft function. Alternatively, the bag opening can be designed to be smaller, matching the shape of the disposable lunch box 20. This way, after the middle of the bag opening is restricted and closed, it is difficult for a person to operate the lid 31 of the disposable lunch box 20 through the gaps on both sides of the bag opening. Furthermore, multiple first anti-theft strips 21 and multiple second anti-theft strips 22 can be provided. Each first anti-theft strip 21 corresponds to at least one second anti-theft strip 22. Multiple first anti-theft strips 21 are arranged sequentially along the side of the disposable lunch box 20, all located on the left side. Multiple second anti-theft strips 22 are also arranged sequentially along the side of the disposable lunch box 20, all located on the right side. Multiple first through holes 12 and second through holes 13 are also provided, corresponding to the positions of the first anti-theft strips 21 and second anti-theft strips 22. This allows for the restriction of the bag opening and the lid 31 of the disposable lunch box 20 at different positions in the circumferential direction, thereby greatly preventing gaps from leaking out of the bag opening and preventing the lid 31 of the lunch box from being opened. Multiple second anti-theft strips 22 can be connected to the same first anti-theft strip 21. For example, in one embodiment, two second anti-theft strips 22 are connected to the same first anti-theft strip 21, with the two second anti-theft strips 22 and the first anti-theft strip 21 spaced 120° apart from each other, which helps to restrict the opening of the lid 31 of the disposable lunch box 20.

[0039] After receiving the insulated and anti-theft lunch box, the user can observe the damage to the disposable insulated bag 10 to determine whether the disposable lunch box 20 has been maliciously removed. When the insulated and anti-theft lunch box is unpacked, the first tear-off part 14 is broken to form a first channel between the first through hole 12 and the edge of the bag opening for the first anti-theft strip 21 to pass through. The second tear-off part 15 is broken to form a second channel between the second through hole 13 and the edge of the bag opening for the second anti-theft strip 22 to pass through. The first anti-theft strip 21 is disengaged from the first through hole 12 through the first channel and moves to the bag opening. The second anti-theft strip 22 is disengaged from the through hole through the second channel and moves to the bag opening. Then the disposable lunch box 20 can be removed from the receiving cavity 11.

[0040] In some optional embodiments, the first anti-theft strip 21 is provided with a plurality of limiting buckles 211, which are arranged sequentially in the direction close to the root of the first anti-theft strip 21, so as to facilitate the second anti-theft strip 22 to be restricted to a suitable position according to actual needs.

[0041] Please see Figure 6 In some optional embodiments, the limiting buckle 211 has a guide ring surface 212 and a limiting ring surface 213 formed on it. Both the guide ring surface 212 and the limiting ring surface 213 are arranged around the first anti-theft strip 21. The guide ring surface 212 is located on the side of the limiting buckle 211 facing the end of the first anti-theft strip 21, and the inner diameter of the guide ring surface 212 gradually decreases in the direction close to the end of the first anti-theft strip 21. The limiting ring surface 213 is located on the side of the limiting buckle 211 facing the root of the first anti-theft strip 21. When the insulated anti-theft lunch box is in the anti-theft packaging state, the limiting ring surface 213 engages with the second anti-theft strip 22 for limiting engagement. In this embodiment, the second anti-theft strip 22 is provided with a limiting seat 222, and the limiting ring surface 213 can abut against the limiting seat 222 to achieve limiting engagement, thereby achieving stable limiting.

[0042] In some optional embodiments, when the insulated and tamper-evident food container is in its tamper-evident packaging state, the first tamper-evident strip 21 and the second tamper-evident strip 22 work together to press a portion of the disposable insulated bag 10 against the disposable food container 20, causing the portions of the disposable insulated bag 10 located on both sides of the bag opening to overlap, thereby preventing gaps at the bag opening, improving the sealing of the bag opening, and thus improving the insulation performance. Furthermore, because the first tamper-evident strip 21 and the second tamper-evident strip 22 work together to tightly connect the disposable insulated bag 10 and the disposable food container 20, the disposable food container 20 is less likely to tip over relative to the disposable insulated bag 10, which helps maintain the position of the disposable food container 20, thereby improving the stability of the disposable food container 20 during food delivery. In addition, because the first tamper-evident strip 21 and the second tamper-evident strip 22 work together to tightly connect the disposable insulated bag 10 and the disposable food container 20, it helps improve the tamper-evident performance, making it difficult to open the disposable food container 20 from the outside of the disposable insulated bag 10. In this embodiment, the disposable lunch box 20 includes a lid 31 and a body 32. The lid 31 and the body 32 are engaged. The first anti-theft strip 21 and the second anti-theft strip 22 are provided on both sides of the body 32. The first anti-theft strip 21 and the second anti-theft strip 22 work together to press part of the disposable insulated bag 10 against the lid 31, making the lid 31 more difficult to open.

[0043] Please see Figure 7 After the disposable lunch box 20 is removed from the disposable insulated bag 10, since the second anti-theft strip 22 and the first anti-theft strip 21 remain connected and cannot be sealed, the user can bend the second anti-theft strip 22 and the first anti-theft strip 21 to the side of the disposable lunch box 20 to avoid them obstructing the meal. For some round lunch boxes, there may be insufficient space between the second anti-theft strip 22 and the first anti-theft strip 21, making it difficult to bend them to one side of the disposable lunch box 20. In this case, the second anti-theft strip 22 and the first anti-theft strip 21 can be cut off, or a square lunch box can be used in advance to avoid the above situation. In some optional embodiments, both the first anti-theft strip 21 and the second anti-theft strip 22 are rotatably engaged with the disposable lunch box 20, making it convenient for the user to rotate the second anti-theft strip 22 and the first anti-theft strip 21 to the side of the disposable lunch box 20, thereby avoiding them obstructing the meal.

[0044] In some alternative embodiments, when the insulated and anti-theft lunch box is in the anti-theft packaging state, the inner diameter of the limiting hole 221 gradually decreases in the direction close to the limiting buckle 211, thereby preventing the limiting buckle 211 from passing through the limiting hole 221 in the reverse direction, making it difficult for the first anti-theft strip 21 and the second anti-theft strip 22 to separate.

[0045] Please see Figure 8In some optional embodiments, the disposable insulated bag 10 is provided with a plurality of first through holes 12 and a plurality of second through holes 13. The plurality of first through holes 12 are arranged sequentially in the direction near the bag opening, and the plurality of second through holes 13 are arranged sequentially in the direction near the bag opening. A first tear-off portion 14 is located between adjacent first through holes 12 and between a first through hole 12 and the bag opening, and a second tear-off portion 15 is located between adjacent second through holes 13 and between a second through hole 13 and the bag opening. Depending on the height of the disposable lunch box 20, a first anti-theft strip 21 passes through a suitable first through hole 12, and a second anti-theft strip 22 passes through a suitable second through hole 13. In addition, the first anti-theft strip 21 can pass through multiple first through holes 12 in sequence. The first anti-theft strip 21 can be inserted starting from the first through hole 12 furthest from the bag opening. Similarly, the second anti-theft strip 22 can pass through multiple second through holes 13 in sequence. The second anti-theft strip 22 can be inserted starting from the second through hole 13 furthest from the bag opening, so that the first anti-theft strip 21 and the second anti-theft strip 22 are tightly connected to the disposable insulated bag 10. This can prevent the disposable insulated bag 10 located between the first anti-theft strip 21 and the second anti-theft strip 22 from being flipped up and causing the bag opening to be opened.

[0046] Please see Figure 9 To prevent the second anti-theft strip 22 from being too close to the root of the first anti-theft strip 21, resulting in insufficient space between the second anti-theft strip 22 and the first anti-theft strip 21, making it difficult to rotate to the side of the disposable lunch box 20 and thus hindering dining, in some alternative embodiments, the first anti-theft strip 21 is also provided with a positioning protrusion 214. The limiting buckle 211 and the positioning protrusion 214 are arranged sequentially in the direction close to the root of the first anti-theft strip 21, and a gap is formed between the limiting buckle 211 and the positioning protrusion 214.

[0047] When the insulated and anti-theft lunch box is in the anti-theft packaging state, the second anti-theft strip 22 passes through multiple second through holes 13 in sequence. The second anti-theft strip 22 is inserted starting from the second through hole 13 furthest from the bag opening, so that the second anti-theft strip 22 is tightly connected to the disposable insulated bag 10. Then, the second anti-theft strip 22 moves to the side of the positioning protrusion 214 away from the interval space, and the second anti-theft strip 22 and the positioning protrusion 214 are positioned and engaged. The first anti-theft strip 21 and the second anti-theft strip 22 work together to press part of the disposable insulated bag 10 against the disposable lunch box 20 to close the bag opening. Since the disposable insulated bag 10 is mainly held down by the second anti-theft strip 22, and the second anti-theft strip 22 is difficult to detach from the first anti-theft strip 21, even if the first anti-theft strip 21 is moved to the interval space, the bag opening will not open, thus avoiding the failure of anti-theft.

[0048] After the insulated and anti-theft lunch box is unpacked, part of the second anti-theft strip 22 moves into the gap space and cooperates with the limiting buckle 211. Since the space between the first anti-theft strip 21 and the second anti-theft strip 22 is large enough when the second anti-theft strip 22 moves into the gap space, the first anti-theft strip 21 and the second anti-theft strip 22 can avoid the edge of the disposable lunch box 20, so that the first anti-theft strip 21 and the second anti-theft strip 22 can rotate to the side of the disposable lunch box 20 for the convenience of the user.

[0049] In some alternative embodiments, the first tearing part 14 includes a plurality of first tearing holes, which are arranged sequentially along the direction from the first through hole 12 to the bag opening; the second tearing part 15 includes a plurality of second tearing holes, which are arranged sequentially along the direction from the second through hole 13 to the bag opening. The first tearing holes and the second tearing holes facilitate the disruption of the structure of the disposable thermal bag 10, and facilitate the formation of the first channel and the second channel.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A thermal insulated and theft-proof lunch box, characterized in that, include: Disposable insulated bags and disposable lunch boxes; The disposable insulated bag is provided with a receiving cavity, a bag opening, a first through hole, a second through hole, a first tear-off part, and a second tear-off part. The bag opening, the first through hole, and the second through hole are all connected to the receiving cavity. The first through hole and the second through hole are respectively located on both sides of the bag opening. The first tear-off part is arranged between the first through hole and the bag opening and extends in the direction from the first through hole to the bag opening. The second tear-off part is arranged between the second through hole and the bag opening and extends in the direction from the second through hole to the bag opening. The disposable lunch box is provided with a first anti-theft strip and a second anti-theft strip on both sides respectively. The first anti-theft strip is provided with a plurality of limiting buckles, which are located at the ends of the first anti-theft strip. The second anti-theft strip is provided with limiting holes. When the insulated and anti-theft lunch box is in the anti-theft packaging state, the disposable lunch box is placed in the accommodating cavity. The first anti-theft strip extends from the first through hole to the outside of the disposable insulated bag, and the second anti-theft strip extends from the second through hole to the outside of the disposable insulated bag. The first anti-theft strip passes through the limiting hole so that part of the second anti-theft strip is located between the limiting buckle and the first through hole. The limiting buckle cooperates with the second anti-theft strip to limit the second anti-theft strip from detaching from the first anti-theft strip. The first anti-theft strip and the second anti-theft strip cooperate to close the bag opening. When the insulated and anti-theft lunch box is released from its anti-theft packaging state, the first tearing part is broken to form a first channel between the first through hole and the edge of the bag opening for the first anti-theft strip to pass through, and the second tearing part is broken to form a second channel between the second through hole and the edge of the bag opening for the second anti-theft strip to pass through; The first anti-theft strip is provided with a plurality of limiting buckles, which are arranged sequentially in the direction close to the root of the first anti-theft strip.

2. The insulated and anti-theft lunch box according to claim 1, characterized in that: The limiting buckle has a guide ring surface and a limiting ring surface, both of which are arranged around the first anti-theft strip. The guide ring surface is located on the side of the limiting buckle facing the end of the first anti-theft strip, and the inner diameter of the guide ring surface gradually decreases in the direction close to the end of the first anti-theft strip. The limiting ring surface is located on the side of the limiting buckle facing the root of the first anti-theft strip. When the insulated anti-theft lunch box is in the anti-theft packaging state, the limiting ring surface cooperates with the second anti-theft strip for limiting.

3. The insulated and anti-theft lunch box according to claim 1, characterized in that: When the insulated and anti-theft lunch box is in the anti-theft packaging state, the first anti-theft strip and the second anti-theft strip work together to press part of the disposable insulated bag against the disposable lunch box so that the parts of the disposable insulated bag located on both sides of the bag opening overlap each other.

4. The insulated and anti-theft lunch box according to claim 3, characterized in that: Both the first and second anti-theft strips are rotatably engaged with the disposable lunch box.

5. A thermal insulated and anti-theft lunch box according to any one of claims 1 to 4, characterized in that: When the insulated and anti-theft lunch box is in the anti-theft packaging state, the inner diameter of the limiting hole gradually decreases in the direction close to the limiting buckle.

6. A thermal insulated and anti-theft lunch box according to any one of claims 1 to 4, characterized in that: The disposable insulated bag is provided with a plurality of first through holes and a plurality of second through holes. The plurality of first through holes are arranged sequentially in the direction near the bag opening, and the plurality of second through holes are arranged sequentially in the direction near the bag opening. The first tear-off portion is located between adjacent first through holes and between the first through hole and the bag opening, and the second tear-off portion is located between adjacent second through holes and between the second through hole and the bag opening.

7. A thermal insulated and anti-theft lunch box according to any one of claims 1 to 4, characterized in that: The first tear-off portion includes a plurality of first tear-off holes, which are arranged sequentially along the direction from the first through hole to the bag opening; The second tear section includes a plurality of second tear holes, which are arranged sequentially along the direction from the second through hole to the bag opening.

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