Self-heating container with closed buckle structure
Through the design of the self-heating container with closed snap structure, the detachable shell and ice cubes are used to combine electric heating to solve the problems of poor insulation effect and uneven heating of lunch boxes, and achieve the effect of rapid and uniform heating and prolonging the shelf life.
Patent Information
- Application Number
- CN202422814080.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-11-18
AI Technical Summary
The existing lunch boxes have poor insulation effect, and the electric heating method leads to uneven heating and food is prone to deterioration. Traditional self-heating lunch boxes have problems such as slow heating speed and short shelf life of food.
A closed snap-on structure self-heating container is designed, including an external container and a heating sleeve, and uses a removable connected shell structure and elastic components to achieve rapid and uniform heating with an ice preservation and electric heating wire to extend the shelf life by filling ice between the inner container and the top shell.
It achieves rapid and even heating of food and extends the shelf life, improves the freshness effect of food, and ensures that the food maintains temperature during the shelf life.
Smart Images
Figure CN223253807U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of food containers, in particular to a self-heating container with a closed snap-fit structure. Background Art
[0002] A lunch box, also known as a bento box, is a container specifically used to hold food. It's mostly made of aluminum, stainless steel, or plastic. There are plastic lunch boxes, insulated lunch boxes, and regular lunch boxes. An insulated lunch box is a regular lunch box with an insulated outer shell. It consists of two layers, one filled with foam plastic and the other coated with a thin metal film. This reduces heat loss through conduction, radiation, and convection. However, the insulation alone may not always be enough to keep food warm; over time, the food will slowly lose heat.
[0003] Common self-heating lunch boxes usually use electric heating to heat the bottom of the container containing food, which makes it easy for the heating speed to be slow and uneven, and the food may deteriorate if it is left for too long. Utility Model Content
[0004] The utility model aims to solve the problems existing in the background technology and proposes a self-heating container with a closed snap-fit structure.
[0005] The technical solution of the utility model is a closed self-heating container with a snap-fit structure, comprising:
[0006] The external container includes a bottom shell, an intermediate shell, a top shell, and a top cover. The bottom shell, intermediate shell, top shell, and top cover are arranged in order from top to bottom. The bottom shell and the intermediate shell, the intermediate shell and the top shell, and the top shell and the top cover are all detachably connected. The bottom shell and the top shell also have a detachably connected structure. A circular ring is provided at the inner upper end of the top shell, and the circular ring is fixedly connected to the inner wall of the top shell. A partition is provided on the inner side of the intermediate shell.
[0007] A heating sleeve is provided on the inner side of the bottom shell, a plurality of electric heating wires are installed on the heating sleeve, and a plurality of elastic components are connected between the heating sleeve and the bottom shell;
[0008] The inner container is provided with a limiting ring on the circumference of the upper end of the inner container.
[0009] Preferably, the upper end of the bottom shell is connected to a first external threaded ring, the upper end of the intermediate shell is connected to a second external threaded ring, the bottom end of the inner wall of the intermediate shell is provided with a first internal thread, and the bottom end of the inner wall of the top shell is provided with a second internal thread; the outer periphery of the top shell is provided with an annular protrusion, and a plurality of locking buckles are connected between the annular protrusion and the top shell.
[0010] Preferably, a first sealing ring is provided on the inner side wall of the top cover, a second sealing ring is provided on the bottom edge of the top cover, a third sealing ring is provided on the upper edge of the intermediate shell, and a fourth sealing ring is provided on the upper edge of the bottom shell.
[0011] Preferably, the elastic component includes a telescopic rod and a spring, the telescopic rod is arranged on the inner side of the bottom shell, the upper end of the telescopic rod is connected to the heating sleeve, and the spring is sleeved on the telescopic rod.
[0012] Preferably, a heat insulation cover is provided at the bottom end of the bottom shell, the bottom end of the heat insulation cover is opened and communicated with the outside, and a battery for powering the multiple electric heating wires is installed on the inner side of the heat insulation cover.
[0013] Preferably, a controller is installed on the bottom shell.
[0014] Preferably, a third external threaded ring is installed on the upper end of the top cover.
[0015] Preferably, a handle is rotatably connected to the top cover.
[0016] Preferably, the interiors of the bottom shell, the middle shell, the top shell and the top cover are all filled with thermal insulation material.
[0017] Preferably, the limiting ring is made of heat insulating material.
[0018] Compared with the prior art, the present invention has the following beneficial technical effects: the present technical solution improves the food preservation effect and extends the shelf life of food by filling ice cubes in the annular cavity between the inner container and the top shell and in the middle shell, and can heat food anytime and anywhere with good heating effect and fast heating speed. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural diagram of the present utility model.
[0020] Figure 2 and Figure 3 All of them are explosion diagrams of the present utility model.
[0021] Figure markings: 1. inner container; 2. bottom shell; 3. intermediate shell; 301. first internal thread; 4. top shell; 401. second internal thread; 5. circular ring; 6. locking buckle; 7. controller; 8. annular protrusion; 9. heating sleeve; 10. battery; 11. heat insulation cover; 12. first external thread ring; 13. second external thread ring; 14. partition; 15. limiting ring; 151. heat insulation block; 16. third external thread ring; 17. handle; 18. top cover; 20. telescopic rod; 21. spring; 22. first sealing ring; 23. second sealing ring; 24. third sealing ring; 25. fourth sealing ring. DETAILED DESCRIPTION
[0022] Example 1
[0023] like Figure 1-Figure 3 As shown, the embodiment proposes a closed snap-fit structure self-heating container, which includes an outer container, an inner container 1 and a heating sleeve 9.
[0024] The outer container includes a bottom shell 2, an intermediate shell 3, a top shell 4 and a top cover 18. The interiors of the bottom shell 2, the intermediate shell 3, the top shell 4 and the top cover 18 are filled with thermal insulation materials. The bottom shell 2, the intermediate shell 3, the top shell 4 and the top cover 18 are arranged in sequence from top to bottom; the bottom shell 2 and the intermediate shell 3, the intermediate shell 3 and the top shell 4, and the top shell 4 and the top cover 18 are all detachably connected structures, and the bottom shell 2 and the top shell 4 have a detachably connected structure. The upper end of the bottom shell 2 is connected to a first external threaded ring 12, the upper end of the intermediate shell 3 is connected to a second external threaded ring 13, and the inner wall bottom of the intermediate shell 3 is The end is provided with a first internal thread 301, and the bottom end of the inner wall of the top shell 4 is provided with a second internal thread 401; the outer periphery of the top shell 4 is provided with an annular protrusion 8, and a plurality of locking buckles 6 are connected between the annular protrusion 8 and the top shell 4; a circular ring 5 is provided at the inner upper end of the top shell 4, and the circular ring 5 is fixedly connected to the inner wall of the top shell 4; a handle 17 is rotatably connected to the top cover 18; a first sealing ring 22 is provided on the inner side wall of the top cover 18, a second sealing ring 23 is provided at the bottom edge of the top cover 18, a third sealing ring 24 is provided at the upper edge of the intermediate shell 3, and a fourth sealing ring 25 is provided at the upper edge of the bottom shell 2; a partition 14 is provided on the inner side of the intermediate shell 3.
[0025] A limiting ring 15 is provided around the upper end of the inner container 1 , and the limiting ring 15 is made of a heat insulating material.
[0026] The heating sleeve 9 is arranged on the inner side of the bottom shell 2, and multiple electric heating wires are installed on the heating sleeve 9. Multiple elastic components are connected between the heating sleeve 9 and the bottom shell 2. The elastic component includes a telescopic rod 20 and a spring 21. The telescopic rod 20 is arranged on the inner side of the bottom shell 2, and the upper end of the telescopic rod 20 is connected to the heating sleeve 9. The spring 21 is sleeved on the telescopic rod 20. After the intermediate shell 3 is connected to the bottom shell 2, the spring 21 is compressed so that the heating sleeve 9 is placed on the inner side of the bottom shell 2. When the intermediate shell 3 is disassembled, the heating sleeve 9 moves upward under the elastic force of the elastic component and wraps around the outer side of the internal container 1 to achieve sufficient heating of the internal container 1.
[0027] A heat insulation cover 11 is provided at the bottom end of the bottom shell 2. The bottom end of the heat insulation cover 11 is open and connected to the outside world. A battery 10 for powering multiple electric heating wires is installed on the inner side of the heat insulation cover 11; a controller 7 is installed on the bottom shell 2, and the controller can turn on or off the heating work and can adjust the heating temperature.
[0028] In this embodiment, the inner container 1 containing food that needs to be kept fresh is placed on the inner side of the top shell 4, so that the inner container 1 passes through the ring 5. The ring 5 can limit the limiting ring 15, and then the intermediate shell 3 is rotated to separate it from the top shell 4. Ice cubes are placed on the upper end of the inner cavity of the intermediate shell 3, and then the intermediate shell 3 is tightened and reset. Then, excess ice cubes are poured into the cavity formed by the inner container 1 and the top shell 4, so that the food in the inner container 1 can be fully cooled, thereby extending the shelf life of the food. Deadline; when heating food, the top shell 4 and the middle shell 3 are separated again, and the ice cubes inside the top shell 4 fall off immediately, and then the middle shell 3 is placed aside, and then the bottom shell 2 is connected to the top shell 4, and the first external thread ring 12 and the second external thread ring 13 can be connected to the second internal thread 401, and the heating sleeve 9 is driven to move upward under the elastic force of the spring 21, so that the heating sleeve 9 is wrapped around the inner bottom end of the internal container 1, so that the internal container 1 can be fully heated, thereby increasing the heating area of the internal container 1.
[0029] Example 2
[0030] like Figure 1-Figure 3 As shown, this embodiment proposes a closed snap-fit structure self-heating container. Compared with Example 1, in this embodiment, a third external threaded ring 16 is installed at the upper end of the top cover 18. During the heating process, the removed intermediate shell 3 can be threadedly connected to the third external threaded ring 16, thereby avoiding accidental loss of the intermediate shell 3.
[0031] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.
Claims
1. A closed self-heating container with a snap-fit structure, characterized in that: include: An external container, the external container comprises a bottom shell (2), an intermediate shell (3), a top shell (4) and a top cover (18), wherein the bottom shell (2), the intermediate shell (3), the top shell (4) and the top cover (18) are arranged in sequence from top to bottom, and the bottom shell (2) and the intermediate shell (3), the intermediate shell (3) and the top shell (4), and the top shell (4) and the top cover (18) are all detachably connected structures, and the bottom shell (2) and the top shell (4) have a detachably connected structure; a circular ring (5) is provided at the inner upper end of the top shell (4), and the circular ring (5) is fixedly connected to the inner wall of the top shell (4); a partition (14) is provided on the inner side of the intermediate shell (3); A heating sleeve (9), the heating sleeve (9) is arranged on the inner side of the bottom shell (2), a plurality of electric heating wires are installed on the heating sleeve (9), and a plurality of elastic components are connected between the heating sleeve (9) and the bottom shell (2); The inner container (1) is provided with a limiting ring (15) on the circumference of the upper end of the inner container (1).
2. A closed self-heating container with a snap-fit structure according to claim 1, characterized in that: The upper end of the bottom shell (2) is connected to a first external thread ring (12), the upper end of the intermediate shell (3) is connected to a second external thread ring (13), the bottom end of the inner wall of the intermediate shell (3) is provided with a first internal thread (301), and the bottom end of the inner wall of the top shell (4) is provided with a second internal thread (401); an annular protrusion (8) is provided on the outer periphery of the top shell (4), and a plurality of locking buckles (6) are connected between the annular protrusion (8) and the top shell (4).
3. A closed self-heating container with a snap-fit structure according to claim 1, characterized in that: A first sealing ring (22) is provided on the inner side wall of the top cover (18), a second sealing ring (23) is provided on the bottom edge of the top cover (18), a third sealing ring (24) is provided on the upper edge of the intermediate shell (3), and a fourth sealing ring (25) is provided on the upper edge of the bottom shell (2).
4. A closed self-heating container with a snap-fit structure according to claim 1, characterized in that: The elastic component comprises a telescopic rod (20) and a spring (21). The telescopic rod (20) is arranged on the inner side of the bottom shell (2). The upper end of the telescopic rod (20) is connected to the heating sleeve (9). The spring (21) is sleeved on the telescopic rod (20).
5. The closed self-heating container with a snap-fit structure according to claim 1, characterized in that: A heat insulation cover (11) is provided at the bottom end of the bottom shell (2). The bottom end of the heat insulation cover (11) is open and communicates with the outside. A battery (10) for supplying power to a plurality of electric heating wires is installed inside the heat insulation cover (11).
6. The closed self-heating container with a snap-fit structure according to claim 1, characterized in that: A controller (7) is mounted on the bottom shell (2).
7. The closed self-heating container with a snap-fit structure according to claim 1, characterized in that: A third external threaded ring (16) is mounted on the upper end of the top cover (18).
8. The closed self-heating container with a snap-fit structure according to claim 1, characterized in that: The top cover (18) is rotatably connected with a handle (17).
9. The closed self-heating container with a snap-fit structure according to claim 1, characterized in that: The interiors of the bottom shell (2), the middle shell (3), the top shell (4) and the top cover (18) are all filled with thermal insulation material.
10. The closed self-heating container with a snap-fit structure according to claim 1, characterized in that: The limiting ring (15) is made of heat-insulating material.