Heat preservation anti-theft lunch box

Abstract

The invention provides a heat-preservation anti-theft meal box. The heat-preservation anti-theft meal box comprises a disposable heat-preservation bag and a disposable meal box, the disposable heat preservation bag is provided with a containing cavity, a bag opening, a first through hole, a second through hole, a first tearing part and a second tearing part. The bag opening, the first through hole and the second through hole are all communicated with the containing cavity. A first anti-theft strip and a second anti-theft strip are arranged on the two sides of the disposable meal box respectively, the first anti-theft strip is provided with a plurality of limiting inverted buckles, the limiting inverted buckles are located at the end of the first anti-theft strip, and a limiting hole is formed in the second anti-theft strip. The heat-preservation anti-theft lunch box is simple in structure, the heat-preservation requirement is met, the disposable lunch box can be stably stored in the disposable heat-preservation bag and is not prone to toppling over relative to the disposable heat-preservation bag, after a merchant packs the lunch box, the lunch box in the lunch box is difficult to take unless the anti-theft state is relieved through malicious damage, the anti-theft effect is achieved, and the service life of the lunch box is prolonged. The user can eat the food securely, and the user experience is good.

Description

Technical Field

[0001] The invention relates to the technical field of lunch boxes, and in particular to a heat-insulating and theft-proof lunch box. Background Art

[0002] With the development of society and the widespread application of the Internet, takeout has become the choice of more and more people. In recent years, takeout has become an indispensable part of the daily life of the younger generation.

[0003] The lunch box generally includes a box body and a box cover. The box body and the box cover are completely separated and combined. When serving food, the box cover can be completely removed to facilitate serving. After the food is loaded, the box cover is put on, and the combination connection between the box cover and the box body is achieved by using the snap-fit ​​structure between the box cover and the box body. Then the lunch box is put into the insulation bag. The existing lunch box and insulation bag are not tightly connected, and the insulation bag can be easily opened. In the process from the store to the user's hands, the insulation bag is easily opened, resulting in the risk of food in the lunch box being stolen. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art and provide a heat-insulating and theft-proof lunch box.

[0005] One embodiment of the present invention provides a heat-insulating and theft-proof lunch box, comprising: a disposable heat-insulating bag and a disposable lunch box;

[0006] The disposable thermal insulation bag is provided with a containing cavity, a bag opening, a first through hole, a second through hole, a first tearing portion and a second tearing portion, the bag opening, the first through hole and the second through hole are all communicated with the containing cavity and are respectively located on both sides of the bag opening, the first tearing portion is arranged between the first through hole and the bag opening and extends from the first through hole to the bag opening, and the second tearing portion is arranged between the second through hole and the bag opening and extends from the second through hole to the bag opening;

[0007] A first anti-theft strip and a second anti-theft strip are respectively provided on both sides of the disposable lunch box, the first anti-theft strip is provided with a plurality of limit buckles, the limit buckles are located at the ends of the first anti-theft strip, and the second anti-theft strip is provided with a limit hole;

[0008] When the heat-insulating anti-theft lunch box is in an anti-theft packaging state, the disposable lunch box is arranged in the accommodating cavity, the first anti-theft strip extends from the first through hole to the outside of the disposable heat-insulating bag, the second anti-theft strip extends from the second through hole to the outside of the disposable heat-insulating 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 inverted buckle and the first through hole, the limiting inverted buckle cooperates with the second anti-theft strip to limit the second anti-theft strip from being able to separate from the first anti-theft strip, and the first anti-theft strip and the second anti-theft strip cooperate to close the bag opening.

[0009] In some optional embodiments, when the heat-insulating anti-theft lunch box is released from the anti-theft packaging state, the first tear portion is destroyed to form a first channel for the first anti-theft strip to pass through between the first through hole and the edge of the bag opening, and the second tear portion is destroyed to form a second channel for the second anti-theft strip to pass through between the second through hole and the edge of the bag opening.

[0010] In some optional embodiments, the first anti-theft strip is provided with a plurality of the position-limiting undercuts, and the plurality of the position-limiting undercuts are arranged sequentially in a direction close to a root of the first anti-theft strip.

[0011] In some optional embodiments, a guide ring surface and a limiting ring surface are formed on the limiting inverted buckle, and the guide ring surface and the limiting ring surface are arranged around the first anti-theft strip. The guide ring surface is located on the side of the limiting inverted 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 inverted buckle facing the root of the first anti-theft strip. When the thermal insulation anti-theft lunch box is in the anti-theft packaging state, the limiting ring surface cooperates with the second anti-theft strip to limit the position.

[0012] In some optional embodiments, when the thermal insulation 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 part of the disposable insulation bag toward the disposable lunch box so that parts of the disposable insulation bag located on both sides of the bag opening overlap with each other.

[0013] In some optional embodiments, the first anti-theft strip and the second anti-theft strip are both rotatably matched with the disposable lunch box.

[0014] In some optional implementations, when the heat-insulating anti-theft lunch box is in the anti-theft packaging state, the inner diameter of the limiting hole gradually decreases in a direction approaching the limiting undercut.

[0015] In some optional embodiments, the disposable thermal insulation bag is provided with a plurality of the first through holes and a plurality of the second through holes, the plurality of the first through holes are arranged in sequence in the direction close to the bag opening, the plurality of the second through holes are arranged in sequence in the direction close to the bag opening, the first tearing portion is located between adjacent first through holes and between the first through hole and the bag opening, and the second tearing portion is located between adjacent second through holes and between the second through hole and the bag opening.

[0016] In some optional embodiments, the first tear portion includes a plurality of first tear holes, and the plurality of first tear holes are arranged in sequence along a direction from the first through hole to the bag opening;

[0017] The second tear portion includes a plurality of second tear holes, and the plurality of second tear holes are arranged in sequence along a direction from the second through hole to the bag opening.

[0018] Compared with the prior art, the heat-insulating and anti-theft lunch box of the present invention has a simple structure, which not only meets the insulation requirements, but also enables the disposable lunch box to be stably stored in the disposable insulation bag and is not easy to tip over relative to the disposable insulation bag. Moreover, after the merchant packs it, it is difficult to take the lunch box inside unless it is maliciously damaged to release the anti-theft state, thereby achieving an anti-theft effect, allowing users to eat with peace of mind and providing a better user experience.

[0019] In order to more clearly understand the present invention, the specific implementation of the present invention will be described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A cross-sectional view of the heat-insulating anti-theft lunch box of the first embodiment of the present invention in an anti-theft packaging state;

[0021] Figure 2 This is a schematic structural diagram of a disposable thermal insulation bag according to a first embodiment of the present invention;

[0022] Figure 3 A sectional view of a disposable lunch box according to a first embodiment of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the heat-insulating anti-theft lunch box of the first embodiment of the present invention when it is in the anti-theft packaging state;

[0024] Figure 5 This is a schematic structural diagram of a heat-insulating anti-theft lunch box according to a second embodiment of the present invention when it is in an anti-theft packaging state;

[0025] Figure 6 for Figure 3 An enlarged view of point A is shown;

[0026] Figure 7It is a schematic structural diagram of the disposable lunch box of the first embodiment of the present invention after the heat-insulating anti-theft lunch box is released from the anti-theft packaging state;

[0027] Figure 8 It is a structural schematic diagram of the heat-insulating anti-theft lunch box of the third embodiment of the present invention when it is in the anti-theft packaging state;

[0028] Fig. 9 This is a schematic structural diagram of a heat-insulating anti-theft lunch box according to a fourth embodiment of the present invention when it is in an anti-theft packaging state.

[0029] Description of reference numerals:

[0030] 10. Disposable insulation bag; 11. Accommodating cavity; 12. First through hole; 13. Second through hole; 14. First tear-off portion; 15. Second tear-off portion; 20. Disposable lunch box; 21. First anti-theft strip; 211. Limiting buckle; 212. Guide annular surface; 213. Limiting annular surface; 214. Positioning protrusion; 22. Second anti-theft strip; 221. Limiting hole; 222. Limiting seat; 31. Box cover; 32. Box body. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In the description of the present invention, unless otherwise specified, "multiple" means 2 or more, and "several" means 1 or more. In addition, unless otherwise specified, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the description of the present invention, the description with reference to the terms "one embodiment", "some optional implementations" or "some optional embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0035] See also Figures 1 to 3 , one embodiment of the present invention provides a heat preservation and anti-theft lunch box, comprising: a disposable heat preservation bag 10 and a disposable lunch box 20;

[0036] The disposable thermal insulation bag 10 is provided with a containing cavity 11, a bag opening, a first through hole 12, a second through hole 13, a first tearing portion 14 and a second tearing portion 15. The bag opening, the first through hole 12 and the second through hole 13 are all connected to the containing cavity 11 and are respectively located on both sides of the bag opening. The first tearing portion 14 is arranged between the first through hole 12 and the bag opening and extends from the first through hole 12 to the bag opening. The second tearing portion 15 is arranged between the second through hole 13 and the bag opening and extends from the second through hole 13 to the bag opening.

[0037] A first anti-theft strip 21 and a second anti-theft strip 22 are respectively provided on both sides of the disposable lunch box 20 . The first anti-theft strip 21 is provided with a plurality of limit buckles 211 , which are located at the ends of the first anti-theft strip 21 . The second anti-theft strip 22 is provided with limit holes 221 .

[0038] See also Figure 4When the heat-insulating anti-theft lunch box is in the anti-theft packaging state, the disposable lunch box 20 is arranged in the accommodating cavity 11, the first anti-theft strip 21 extends from the first through hole 12 to the outside of the disposable heat-insulating bag 10, and the second anti-theft strip 22 extends from the second through hole 13 to the outside of the disposable heat-insulating bag 10, the first anti-theft strip 21 passes through the limiting hole 221 so that a part of the second anti-theft strip 22 is located between the limiting inverted buckle 211 and the first through hole 12, the limiting inverted buckle 211 and the second anti-theft strip 22 are limitedly matched to limit the second anti-theft strip 22 from being able to separate from the first anti-theft strip 21, the first anti-theft strip 21 and the second anti-theft strip 22 cooperate to close the bag opening, because 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 accommodating 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 stealing.

[0039] See also Figure 5It should be noted that the first anti-theft strip 21 and the second anti-theft strip 22 cooperate to close the bag opening so that the bag opening cannot be used to operate the disposable lunch box 20 in the accommodating cavity 11, thereby preventing the disposable lunch box 20 from being opened. In addition, the depth of the accommodating cavity 11 can be designed to be deep enough so that it is impossible to reach into the accommodating cavity 11 through the gap of the bag opening to operate the disposable lunch box 20 located at the bottom of the accommodating cavity 11. Moreover, the lid of the disposable lunch box 20 can be designed as a flip-top type, and the lid 31 of the disposable lunch box 20 is snap-fitted with the box body 32, so that it is not only difficult to open the lid 31, but also even if the snap-fitting of the lid 31 and the box body 32 is accidentally released, it is difficult to flip open the lid 31 due to the obstruction of the first anti-theft strip 21 and the second anti-theft strip 22, so that the lid 31 cannot be opened. In addition, since the first anti-theft strip 21 and the second anti-theft strip 22 mainly press the middle part of the bag opening, the two sides of the bag opening may easily turn out gaps, and the two sides near the bag opening can be stapled together by a binding machine to improve the anti-theft function. Of course, the bag opening can also be designed to be smaller so that the bag opening matches the shape of the disposable lunch box 20, so that after the middle part of the bag opening is restricted and folded, it is difficult for people to operate the box cover 31 of the disposable lunch box 20 through the gaps on both sides of the bag opening. In addition, multiple first anti-theft strips 21 and multiple second anti-theft strips 22 can also be set, each first anti-theft strip 21 corresponds to at least one second anti-theft strip 22, multiple first anti-theft strips 21 are arranged in sequence along the side of the disposable lunch box 20, all located on the left side of the disposable lunch box 20, multiple second anti-theft strips 22 are arranged in sequence along the side of the disposable lunch box 20, all located on the right side of the disposable lunch box 20, and multiple first through holes 12 and second through holes 13 are also provided, and are arranged corresponding to the positions of the first anti-theft strip 21 and the second anti-theft strip 22. This In this way, the bag opening and the lid 31 of the disposable lunch box 20 can be restricted at different positions in the circumferential direction of the disposable lunch box 20, thereby greatly avoiding gaps from the bag opening and avoiding the lid 31 of the lunch box from being opened. Among them, 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, and the two second anti-theft strips 22 and the first anti-theft strip 21 are spaced 120° from each other, which is conducive to restricting the opening of the lid 31 of the disposable lunch box 20.

[0040] After the user gets the thermal insulation anti-theft lunch box, the user can observe the damage of the disposable thermal insulation bag 10 to determine whether the disposable lunch box 20 is taken out maliciously. When the thermal insulation anti-theft lunch box is released from the anti-theft packaging state, the first tear portion 14 is destroyed to form a first channel for the first anti-theft strip 21 to pass through between the first through hole 12 and the edge of the bag opening, and the second tear portion 15 is destroyed to form a second channel for the second anti-theft strip 22 to pass through between the second through hole 13 and the edge of the bag opening. The first anti-theft strip 21 detaches from the first through hole 12 from the first channel and moves to the bag opening, and the second anti-theft strip 22 detaches from the through hole from the second channel and moves to the bag opening. Then the disposable lunch box 20 can be taken out of the accommodating cavity 11.

[0041] In some optional embodiments, the first anti-theft strip 21 is provided with a plurality of limit undercuts 211, which are arranged in sequence in the direction close to the root of the first anti-theft strip 21, so as to limit the second anti-theft strip 22 to a suitable position according to actual needs.

[0042] See also Figure 6 In some optional embodiments, a guide ring surface 212 and a limit ring surface 213 are formed on the limit undercut 211, and the guide ring surface 212 and the limit ring surface 213 are arranged around the first anti-theft strip 21, and the guide ring surface 212 is located on the side of the limit undercut 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, and the limit ring surface 213 is located on the side of the limit undercut 211 facing the root of the first anti-theft strip 21, and when the heat-insulating anti-theft lunch box is in the anti-theft packaging state, the limit ring surface 213 and the second anti-theft strip 22 are limited. In this embodiment, a limit seat 222 is provided on the second anti-theft strip 22, and the limit ring surface 213 can abut against the limit seat 222 to achieve limit cooperation, thereby achieving stable limit.

[0043] In some optional embodiments, when the heat preservation anti-theft lunch box is in the anti-theft packaging state, the first anti-theft strip 21 and the second anti-theft strip 22 cooperate to press part of the disposable heat preservation bag 10 toward the disposable lunch box 20 so that the parts of the disposable heat preservation bag 10 located on both sides of the bag opening overlap each other, thereby avoiding the existence of a gap at the bag opening, improving the sealing of the bag opening, and then improving the heat preservation performance. Moreover, since the first anti-theft strip 21 and the second anti-theft strip 22 cooperate to tightly connect the disposable heat preservation bag 10 and the disposable lunch box 20, the disposable lunch box 20 is not easy to tip over relative to the disposable heat preservation bag 10, which is conducive to maintaining the position of the disposable lunch box 20, thereby improving the stability of the disposable lunch box 20 during the meal delivery process. In addition, since the first anti-theft strip 21 and the second anti-theft strip 22 cooperate to tightly connect the disposable heat preservation bag 10 and the disposable lunch box 20, it is conducive to improving the anti-theft performance, making it difficult to open the disposable lunch box 20 from the outside of the disposable heat preservation bag 10. In this embodiment, the disposable lunch box 20 includes a box cover 31 and a box body 32, and the box cover 31 and the box body 32 are engaged. The first anti-theft strip 21 and the second anti-theft strip 22 are arranged on both sides of the box body 32. The first anti-theft strip 21 and the second anti-theft strip 22 cooperate to press part of the disposable insulation bag 10 toward the box cover 31, making the box cover 31 more difficult to open.

[0044] See also Figure 7 After the disposable lunch box 20 is taken out of the disposable insulation bag 10, since the second anti-theft strip 22 and the first anti-theft strip 21 are still 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, thereby avoiding the second anti-theft strip 22 and the first anti-theft strip 21 from interfering with the meal. For some round lunch boxes, there may be a small space between the second anti-theft strip 22 and the first anti-theft strip 21 and it is difficult to bend to one side of the disposable lunch box 20. At this time, 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, the first anti-theft strip 21 and the second anti-theft strip 22 are both rotated with the disposable lunch box 20, so that the user can rotate the second anti-theft strip 22 and the first anti-theft strip 21 to the side of the disposable lunch box 20 to avoid the second anti-theft strip 22 and the first anti-theft strip 21 from interfering with the meal.

[0045] In some optional embodiments, when the heat-insulating anti-theft lunch box is in an anti-theft packaging state, the inner diameter of the limiting hole 221 gradually decreases in the direction close to the limiting inverted buckle 211, thereby facilitating the limiting inverted buckle 211 from passing through the limiting hole 221 in the reverse direction, making it difficult to separate the first anti-theft strip 21 and the second anti-theft strip 22.

[0046] See also Figure 8In some optional embodiments, the disposable insulation 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 sequentially arranged in the direction close to the bag opening, the plurality of second through holes 13 are sequentially arranged in the direction close to the bag opening, the first tearing portion 14 is located between adjacent first through holes 12 and between the first through hole 12 and the bag opening, and the second tearing portion 15 is located between adjacent second through holes 13 and between the second through hole 13 and the bag opening. According to the height of the disposable lunch box 20, the first anti-theft strip 21 selects a suitable first through hole 12 to pass through, and the second anti-theft strip 22 selects a suitable second through hole 13 to pass through. In addition, the first security strip 21 can pass through multiple first through holes 12 in sequence, and the insertion order of the first security strip 21 can be starting from the first through hole 12 farthest from the bag opening. Similarly, the second security strip 22 can pass through multiple second through holes 13 in sequence, and the insertion order of the second security strip 22 can be starting from the second through hole 13 farthest from the bag opening, so that the first security strip 21 and the second security strip 22 are tightly connected to the disposable insulation bag 10, so as to prevent the disposable insulation bag 10 located between the first security strip 21 and the second security strip 22 from being flipped up and causing the bag opening to be opened.

[0047] See also Fig. 9 In order to avoid the second anti-theft strip 22 being too close to the root of the first anti-theft strip 21, resulting in the space between the second anti-theft strip 22 and the first anti-theft strip 21 being too small and difficult to rotate to the side of the disposable lunch box 20 and hindering dining, in some other optional embodiments, a positioning protrusion 214 is also provided on the first anti-theft strip 21, and the limiting undercut 211 and the positioning protrusion 214 are arranged in sequence in the direction close to the root of the first anti-theft strip 21, and a spacing space is formed between the limiting undercut 211 and the positioning protrusion 214.

[0048] When the heat-insulating anti-theft lunch box is in the anti-theft packaging state, the second anti-theft strip 22 passes through the multiple second through holes 13 in sequence. The insertion order of the second anti-theft strip 22 is to start from the second through hole 13 farthest from the bag opening, so that the second anti-theft strip 22 is tightly connected to the disposable heat-insulating bag 10. Then, the second anti-theft strip 22 moves to the side of the positioning protrusion 214 away from the spacing space, and the second anti-theft strip 22 is positioned and matched with the positioning protrusion 214. The first anti-theft strip 21 and the second anti-theft strip 22 cooperate to press part of the disposable heat-insulating bag 10 toward the disposable lunch box 20 to close the bag opening. Since the disposable heat-insulating bag 10 is mainly pressed by the second anti-theft strip 22, and the second anti-theft strip 22 is difficult to separate from the first anti-theft strip 21, even if the first anti-theft strip 21 is moved to the spacing space, the bag opening will not be opened, thereby avoiding anti-theft failure.

[0049] After the heat-insulating anti-theft lunch box is released from the anti-theft packaging state, part of the second anti-theft strip 22 moves to the spacing space and cooperates with the limiting undercut 211. When the second anti-theft strip 22 moves to the spacing space, the space between the first anti-theft strip 21 and the second anti-theft strip 22 is large enough to facilitate the first anti-theft strip 21 and the second anti-theft strip 22 to 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 be rotated to the side of the disposable lunch box 20, which is convenient for users to eat.

[0050] In some optional embodiments, the first tear portion 14 includes a plurality of first tear holes, which are arranged in sequence from the first through hole 12 to the bag opening; the second tear portion 15 includes a plurality of second tear holes, which are arranged in sequence from the second through hole 13 to the bag opening. The first tear holes and the second tear holes facilitate destruction of the structure of the disposable insulation bag 10 and facilitate formation of the first channel and the second channel.

[0051] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat-insulating and anti-theft lunch box, characterized in that: include: Disposable thermal bags and disposable lunch boxes; The disposable thermal insulation bag is provided with a containing cavity, a bag opening, a first through hole, a second through hole, a first tearing portion and a second tearing portion, the bag opening, the first through hole and the second through hole are all communicated with the containing cavity and are respectively located on both sides of the bag opening, the first tearing portion is arranged between the first through hole and the bag opening and extends from the first through hole to the bag opening, and the second tearing portion is arranged between the second through hole and the bag opening and extends from the second through hole to the bag opening; A first anti-theft strip and a second anti-theft strip are respectively provided on both sides of the disposable lunch box, the first anti-theft strip is provided with a plurality of limit buckles, the limit buckles are located at the ends of the first anti-theft strip, and the second anti-theft strip is provided with a limit hole; When the heat-insulating anti-theft lunch box is in an anti-theft packaging state, the disposable lunch box is arranged in the accommodating cavity, the first anti-theft strip extends from the first through hole to the outside of the disposable heat-insulating bag, the second anti-theft strip extends from the second through hole to the outside of the disposable heat-insulating 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 inverted buckle and the first through hole, the limiting inverted buckle cooperates with the second anti-theft strip to limit the second anti-theft strip from being able to separate from the first anti-theft strip, and the first anti-theft strip and the second anti-theft strip cooperate to close the bag opening.

2. The heat-insulating and anti-theft lunch box according to claim 1, characterized in that: When the heat-insulating anti-theft lunch box is released from the anti-theft packaging state, the first tear portion is destroyed to form a first channel for the first anti-theft strip to pass through between the first through hole and the edge of the bag opening, and the second tear portion is destroyed to form a second channel for the second anti-theft strip to pass through between the second through hole and the edge of the bag opening.

3. The heat-insulating and anti-theft lunch box according to claim 1, characterized in that: The first anti-theft strip is provided with a plurality of the position-limiting undercuts, and the plurality of the position-limiting undercuts are arranged in sequence in a direction close to a root of the first anti-theft strip.

4. The heat-insulating and anti-theft lunch box according to claim 1, characterized in that: A guide ring surface and a limit ring surface are formed on the limit inverted buckle, and the guide ring surface and the limit ring surface are arranged around the first anti-theft strip. The guide ring surface is located on the side of the limit inverted 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 limit ring surface is located on the side of the limit inverted buckle facing the root of the first anti-theft strip. When the thermal insulation anti-theft lunch box is in the anti-theft packaging state, the limit ring surface cooperates with the second anti-theft strip to limit the position.

5. The heat-insulating and anti-theft lunch box according to claim 1, characterized in that: When the heat-insulating 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 part of the disposable heat-insulating bag toward the disposable lunch box so that parts of the disposable heat-insulating bag located on both sides of the bag opening overlap each other.

6. The heat-insulating and anti-theft lunch box according to claim 5, characterized in that: The first anti-theft strip and the second anti-theft strip are both rotatably matched with the disposable lunch box.

7. The heat-insulating and theft-proof lunch box according to any one of claims 1 to 6, characterized in that: When the heat-insulating anti-theft lunch box is in the anti-theft packaging state, the inner diameter of the limiting hole gradually decreases in the direction approaching the limiting undercut.

8. The heat-insulating and anti-theft lunch box according to any one of claims 1 to 6, characterized in that: The disposable thermal insulation bag is provided with a plurality of first through holes and a plurality of second through holes, wherein the plurality of first through holes are arranged in sequence in a direction close to the bag opening, and the plurality of second through holes are arranged in sequence in a direction close to the bag opening, the first tearing portion is located between adjacent first through holes and between the first through hole and the bag opening, and the second tearing portion is located between adjacent second through holes and between the second through hole and the bag opening.

9. The heat-insulating and anti-theft lunch box according to any one of claims 1 to 6, characterized in that: The first tearing portion includes a plurality of first tearing holes, and the plurality of first tearing holes are arranged in sequence along a direction from the first through hole to the bag opening; The second tear portion includes a plurality of second tear holes, and the plurality of second tear holes are arranged in sequence along a direction from the second through hole to the bag opening.

Images