Self-heating lunch box
By designing limiting units, raised edges, and anti-collision protrusions in the self-heating lunch box, the problem of the main box body overheating and burning the table surface is solved, and the heat dissipation and food partitioning storage are achieved, improving the safety and functionality of use.
Patent Information
- Application Number
- CN202520405016.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-10
AI Technical Summary
When using a self-heating lunchbox, the internal temperature of the main box cannot be effectively released, resulting in the internal wall temperature remaining too high, which may burn the table surface, especially if the table surface material is not heat-resistant or the lunchbox has been left for too long.
A self-heating lunch box was designed, comprising a main box and a secondary box. By using a limiting unit and an elevated edge structure, the direct contact area between the heating bag and the main box is reduced. An anti-heating protrusion is set on the inner wall of the main box to increase the space height of the heating bag. Combined with the design of the air vent and the notch, effective heat dissipation is achieved.
It effectively prevents the bottom of the main box from overheating and burning the tabletop. By reducing the direct contact area between the heating bag and the main box and increasing the height, it protects the tabletop and provides food partition storage and steam venting functions.
Smart Images
Figure CN223787250U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of self-heating lunch box technology, specifically a self-heating lunch box. Background Technology
[0002] A self-heating lunchbox is a convenient device that heats food without an external heat source. The heating bag inside the main box contains a heating agent and chemicals, which is the key to generating heat. To use it, the user places the heating bag inside the main box, adds water, and then places the secondary box inside the main box to heat the food inside the secondary box.
[0003] Currently, the internal temperature of self-heating lunch boxes can reach 98 degrees Celsius during use. Because the internal temperature cannot be effectively released, the internal wall temperature of the main box remains too high, which may burn the table surface, especially if the table surface material is not heat-resistant or if the lunch box is left for too long. Therefore, a new type of self-heating lunch box is needed to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to address the problem that when using current self-heating lunch boxes, the internal temperature of the main box can reach 98 degrees Celsius, and because the internal temperature cannot be effectively released, the internal wall temperature of the main box remains too high, which may burn the table surface, especially if the table surface material is not heat-resistant or the lunch box has been left for too long. This invention provides a self-heating lunch box.
[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0006] A self-heating lunch box includes: a main box body, a secondary box body slidably inserted into the inner wall of the main box body, a cover plate disposed above the secondary box body, and further includes a first limiting unit and a second limiting unit, the first limiting unit being used to limit the position of the secondary box body on the inner wall of the main box body, and the second limiting unit being used to limit the position of the cover plate above the secondary box body.
[0007] The bottom of the main box is provided with an open edge, and the inner wall of the main box is provided with several abutting protrusions.
[0008] Furthermore, the sub-box includes a placement box, the interior of which has a first space and a second space. A baffle is slidably inserted into the inner wall of the first space, and a limiting protrusion is provided on the surface of the baffle. The surface of the limiting protrusion is slidably inserted into the inner wall of the first space.
[0009] Furthermore, the first limiting unit includes a limiting groove formed at the top of the main box, and the surface of the placement box is provided with a limiting edge, the surface of the limiting edge being slidably inserted into the inner wall of the limiting groove.
[0010] Furthermore, the second limiting unit includes several buckles that are fixedly installed on the surface of the cover plate, and several buckle heads that are respectively adapted to several of the buckles are fixedly installed on the surface of the main box.
[0011] Furthermore, an air vent is provided on the inner wall of the main box.
[0012] Furthermore, the surface of the elevated edge is provided with several notches.
[0013] Furthermore, a limiting ring is fixedly installed at the bottom of the cover plate, and the surface of the limiting ring is slidably inserted into the surface of the limiting edge.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. In this utility model, a secondary box is set inside the main box. During use, the user places the food inside the secondary box. When heating is required, the second limiting unit and the first limiting unit sequentially release the limiting of the cover and the secondary box. Then, the cover and the secondary box are taken out in sequence. A heating bag is placed inside the main box, cold water is poured in, and the secondary box and the cover are put back in their original positions and restrained by the second limiting unit and the first limiting unit in sequence. The food can then be heated. During the heating process, the raised edge suspends the main box, effectively preventing the bottom of the main box from getting too hot and burning the table. Furthermore, because several abutment protrusions are set on the inner wall of the main box, when the user is using the product, these protrusions will abut against the two sides of the heating bag, thus suspending the heating bag inside the main box. By reducing the direct contact area between the heating bag and the main box and increasing the space height of the heating bag, the protection of the table is further achieved.
[0016] 2. In this utility model, the secondary box is split into a placement box that slides into the inner wall of the main box. A first space and a second space are set inside the placement box. At the same time, the first space is further divided into two spaces by the baffle. In actual use, the user can adjust the baffle according to the actual situation (i.e., insert the baffle when the food needs to be separated, and remove the baffle when the food does not need to be separated, such as fried rice, to ensure the storage capacity of the first space). Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0018] Figure 2 This is a half-sectional view of the present invention;
[0019] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention;
[0020] Figure 4 This is a three-dimensional structural diagram of another part of the present invention from another angle.
[0021] In the diagram: 1. Main box; 2. Secondary box; 21. Placement box; 22. First space; 23. Second space; 24. Baffle; 25. Limiting protrusion; 3. Cover plate; 4. First limiting unit; 41. Limiting groove; 42. Limiting edge; 5. Second limiting unit; 51. Button; 52. Buckle; 6. Elevated edge; 7. Abutting protrusion; 8. Air outlet; 9. Notch; 10. Limiting ring. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0023] This embodiment provides a self-heating lunch box, mainly to solve the problem that the internal temperature of the main box of current self-heating lunch boxes can reach 98 degrees Celsius during use. Furthermore, because the internal temperature of the main box cannot be effectively released, the internal wall temperature of the main box remains excessively high, which may scald the table surface, especially if the table surface material is not heat-resistant or if the lunch box has been used for an extended period. The following technical solution is provided, which will be discussed in conjunction with... Figures 1-4 Please provide a detailed explanation:
[0024] A self-heating lunch box includes: a main body 1 with a secondary box 2 slidably inserted into its inner wall, and a cover 3 on top of the secondary box 2. In use, the user first places a heating bag inside the main body 1, pours in cold water, slides the secondary box 2 into the inner wall of the main body 1 (with food inside the secondary box 2), then limits the secondary box 2 with a first limiting unit 4, places the cover 3 on top of the secondary box 2, and limits it with a second limiting unit 5, thus heating the food. Simultaneously, during the heating process, a heating element located at the bottom of the main body 1... The raised edge 6 elevates the main box 1, preventing the table from being burned by high temperatures. Because several abutment protrusions 7 are located on the inner wall of the main box 1, the heating bag placed inside the main box 1 is also raised by these protrusions. By reducing the direct contact area between the heating bag and the main box 1 and increasing the height of the heating bag, further protection of the table is achieved. The main components of the secondary box 2 are: a placement box 21 with a first space 22 and a second space 23 inside. During use, the user can place the staple food inside the first space 22... The second space 23 is used to place food items. Meanwhile, a baffle 24 is slidably inserted into the inner wall of the first space 22, and a limiting protrusion 25 on the surface of the baffle 24 slidably inserts into the inner wall of the first space 22. Therefore, the user can use the baffle 24 to partition the first space 22, achieving further division for placing food items to meet different needs. The main component of the first limiting unit 4 is a limiting edge 42 set on the surface of the placement box 21. During use, the user slides the placement box 21 into the main box 1 while simultaneously inserting the limiting edge 42. The limiting groove 41 opened at the top of the main box 1 can limit the placement of the box 21 on the inner wall of the main box 1. The main components of the second limiting unit 5 are: several buckles 51 that are fixedly installed on the surface of the cover plate 3. In use, the user fastens several buckles 51 onto the surface of several buckles 52 that are fixedly installed on the surface of the main box 1, thereby limiting the cover plate 3 above the main box 1. It should be noted that the buckles 51 and buckles 52 are made of plastic and are existing technology, commonly found in lunch boxes, and will not be elaborated on here.
[0025] By setting a secondary box 2 inside the main box 1, the user places the food inside the secondary box 2. When heating is needed, the second limiting unit 5 and the first limiting unit 4 sequentially release the limiting of the cover 3 and the secondary box 2, then remove the cover 3 and the secondary box 2 in sequence. A heating bag is placed inside the main box 1, cold water is poured in, and the secondary box 2 and the cover 3 are put back in their original positions and restrained by the second limiting unit 5 and the first limiting unit 4 in sequence. The food can then be heated. During the heating process, the raised edge 6 suspends the main box 1, effectively preventing the bottom of the main box 1 from getting too hot and burning the table. Furthermore, because several abutment protrusions 7 are set on the inner wall of the main box 1, when the user is using the heating bag, these protrusions will abut against the two sides of the heating bag, thus suspending the heating bag inside the main box 1. By reducing the direct contact area between the heating bag and the main box 1 and increasing the space height of the heating bag, the protection of the table is further achieved.
[0026] By splitting the secondary box 2 into a placement box 21 that slides into the inner wall of the main box 1, and setting a first space 22 and a second space 23 inside the placement box 21, the first space 22 is further divided into two spaces by the partition 24. In actual use, the user can adjust the partition 24 according to the actual situation (i.e., insert the partition 24 when the food needs to be separated, and remove the partition 24 when the food does not need to be separated, such as fried rice, to ensure the storage capacity of the first space 22).
[0027] like Figure 2 As shown, in some embodiments, when the heating bag inside the main box 1 generates a large amount of steam, the large amount of steam can be discharged from the air outlet 8 opened on the inner wall of the main box 1, thereby preventing the internal air pressure of the main box 1 from being too high and some mist from entering the interior of the placement box 21, causing impurities such as carbon powder inside to enter the food. At the same time, several notches 9 are opened on the surface of the suspended edge 6, and the temperature at the bottom of the main box 1 can be dissipated to the outside through the several notches 9. When the user puts the cover plate 3 on top of the main box 1, the limiting ring 10 fixedly installed at the bottom of the cover plate 3 will slide into the surface of the limiting edge 42, further protecting the food inside the placement box 21 (the mist generated by the heating bag is difficult to pass through the limiting ring 10 and enter the interior of the placement box 21).
[0028] The working process of this utility model:
[0029] First, the user needs to unfasten several buttons 51 from several buckles 52, then take out the cover plate 3 and the placement box 21 in sequence, place the heating bag inside the main box 1, pour in cold water, and put the placement box 21 and the cover plate 3 back in their original positions to heat the food.
[0030] Secondly, during the heating process, the heating bag is suspended by several anti-collision protrusions 7, which reduces the direct contact area between the heating bag and the main box 1 and increases the spatial height of the heating bag, thus protecting the tabletop.
[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A self-heating lunch box, characterized in that, include: The main box (1) has a secondary box (2) slidably inserted into its inner wall. A cover plate (3) is provided above the secondary box (2). The main box (1) also includes a first limiting unit (4) and a second limiting unit (5). The first limiting unit (4) is used to limit the position of the secondary box (2) on the inner wall of the main box (1), and the second limiting unit (5) is used to limit the position of the cover plate (3) above the secondary box (2). The bottom of the main box (1) is provided with an open edge (6), and the inner wall of the main box (1) is provided with a number of abutting protrusions (7).
2. The self-heating lunch box according to claim 1, characterized in that: The sub-box (2) includes a placement box (21), and the placement box (21) has a first space (22) and a second space (23) inside. A baffle (24) is slidably inserted into the inner wall of the first space (22), and a limiting protrusion (25) is provided on the surface of the baffle (24). The surface of the limiting protrusion (25) is slidably inserted into the inner wall of the first space (22).
3. A self-heating lunch box according to claim 2, characterized in that: The first limiting unit (4) includes a limiting groove (41) opened on the top of the main box (1), and a limiting edge (42) is provided on the surface of the placement box (21). The surface of the limiting edge (42) is slidably inserted into the inner wall of the limiting groove (41).
4. A self-heating lunch box according to claim 1, characterized in that: The second limiting unit (5) includes several buckles (51) that are fixedly installed on the surface of the cover plate (3), and several buckles (52) that are respectively adapted to several buckles (51) are fixedly installed on the surface of the main box (1).
5. A self-heating lunch box according to claim 1, characterized in that: The inner wall of the main box (1) is provided with an air outlet (8).
6. A self-heating lunch box according to claim 1, characterized in that: The surface of the overhead edge (6) has several notches (9).
7. A self-heating lunch box according to claim 3, characterized in that: A limiting ring (10) is fixedly installed at the bottom of the cover plate (3), and the surface of the limiting ring (10) is slidably inserted into the surface of the limiting edge (42).