Multi-layer combined sealed lunch box
By introducing intermediate connectors and sealing rings into the multi-layer lunchbox design, the problems of poor sealing and heat preservation are solved, resulting in a compact and easy-to-use multi-layer lunchbox design.
Patent Information
- Application Number
- CN202520084111.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2035-01-14
AI Technical Summary
Existing multi-layer lunch boxes are inadequate in terms of sealing and heat preservation, and their complex structure makes them inconvenient to use.
A multi-layer combined sealed lunch box is designed. An intermediate connector is set between the lid and the body. The connector has vertical side panels and horizontal partitions. Fasteners and raised edges are set on the lid and the body. The sealing rings are used to achieve a tight connection between the layers. The inner liner can be moved and put in.
It achieves good sealing performance, excellent heat preservation effect, simple structure, and convenient use. The number of lunch box layers can be increased or decreased as needed, saving workpieces and materials.
Smart Images
Figure CN223554454U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a lunch box, especially to a multi-layer lunch box, more specifically to a multi-layer combined sealing lunch box which is formed by combination and has sealing function in each layer. BACKGROUND
[0002] Lunch box is the main tableware for people to put food when eating out, especially in school and enterprise canteen, lunch box is the common tableware. Lunch box is generally composed of a box cover and a box body, the material of traditional lunch box is stainless steel, with the development of plastic industry, lunch box made of high-quality plastic by injection molding has been widely used. In order to make lunch box have better sealing, the edge of the two sides of the box cover is usually extended outward to form a flipable buckle, and two convex edges are arranged on the top of the box body, when the box cover is closed on the box body, the buckle and the convex edge form two pairs of buckles to realize the sealing of the lunch box. In order to carry more food at a time, a plurality of lunch boxes are usually stacked and tightly connected, and there are basically two ways for the multi-layer lunch box stacked vertically: one way is to have only one box cover, then a plurality of box bodies are stacked vertically, the box bodies are tightly connected with each other, and the uppermost box body is tightly connected with the box cover to form an integrated tightly connected structure, the multi-layer lunch box has poor sealing between the box bodies, so the heat preservation effect is not good; the other way is that each layer of lunch box is an independent individual, that is, it includes a box cover and a box body, and then the side walls of the lunch boxes are connected by a connecting belt to form an integrated tightly connected structure, the multi-layer lunch box increases the workpiece and the material, and is not very convenient to use. SUMMARY
[0003] In order to overcome the above problems, the utility model aims at providing a multi-layer combined sealing lunch box which is simple in structure, good in sealing performance and convenient to use.
[0004] In order to achieve the above purpose, the multi-layer combined sealing lunch box comprises a box cover and a box body which can be covered with each other, a plurality of buckles are arranged on the side edge of the box cover, and a plurality of convex edges are arranged on the top surface of the box body, characterized in that: at least one intermediate connecting piece is arranged between the box cover and the box body, the connecting piece has a vertical side wall and a horizontal partition plate, the outer shape of the vertical side wall is the same as the outer shape of the box cover and the box body, the upper part of the outer side of the vertical side wall is provided with convex blocks which are the same in number as the buckles of the box cover and can be buckled, and the lower part of the outer side of the vertical side wall is provided with buckles which are the same in number as the convex edges of the box body and can be buckled; when the intermediate connecting piece is two or more, the buckles and the convex blocks of the adjacent two intermediate connecting pieces can be buckled to form a buckling structure; the bottom surface of the box cover and the bottom surface of the horizontal partition plate of the intermediate connecting piece are both fixed with a sealing rubber ring.
[0005] Preferably, the upper cavity formed by the vertical sidewall of the intermediate connector and the top surface of the transverse partition, and the inner cavity formed by the bottom surface and sidewall of the box body, are all provided with a movable inner liner. The inner liner is an open container with compartments, and a gasket is fixed to the top surface of the sidewall of each compartment of the inner liner. The sealing rings on the bottom surface of the box lid and the bottom surface of the transverse partition of the intermediate connector correspond to the gasket structure on the top surface of the inner liner.
[0006] Preferably, the vertical sidewall of the aforementioned intermediate connector has a first concave structure that is recessed inward, and the fasteners and latches on the vertical sidewall are located within the first concave structure; correspondingly, the sidewalls of the aforementioned box cover and box body also have second and third concave structures that are recessed inward, with the fasteners of the box cover located within the second concave structure and the protruding edge of the box body located on the top surface of the third concave structure.
[0007] Preferably, the outer wall of the inner liner is provided with a fourth concave structure corresponding to the first concave structure of the intermediate connector and the third concave structure of the box body.
[0008] Preferably, the transverse partition of the intermediate connector is located at the middle position of the vertical side panel height, and the height of the inner liner is equivalent to the distance from the bottom surface of the transverse partition to the bottom surface of the box body, and also equivalent to the distance from the surface of the transverse partition to the bottom surface of the box lid.
[0009] Preferably, the fastener of the lid is a hinged latch pivotally connected to the side wall of the second concave structure of the lid, and the fastener of the intermediate connector is a hinged latch pivotally connected to the side wall of the first concave structure of the vertical side.
[0010] Preferably, the lunchbox is round, square, or rectangular; there are four buckles on the lid, four protruding edges on the body, and four buckles and protrusions on the intermediate connector.
[0011] This utility model discloses a multi-layer combined sealed lunch box. By incorporating an intermediate connector between the lid and the body, the connector is designed so that its outer side connects to both the lid and body, its upper inner side accommodates the inner liner (equivalent to the lunch box body), and its lower inner side forms a seal with the top surface of the inner liner (equivalent to the lid). This design not only saves on materials and components but also results in a compact structure, excellent sealing performance, and superior heat retention. This multi-layer combined sealed lunch box features a simple structure, novel appearance, and allows for easy adjustment of the number of layers to suit different capacities. It is particularly convenient to operate and ensures a stable connection between the layers during transportation, sales, and use. Attached Figure Description
[0012] Figure 1 This is a structural schematic diagram of the multi-layer combined sealed lunch box of this utility model.
[0013] Figure 2 This is a structural diagram showing the disassembled components of the multi-layer combined sealed lunch box of this utility model.
[0014] Figure 3 A schematic diagram of the structure of the bottom surface of the box lid.
[0015] Figure 4 This is a structural diagram of the bottom surface of the intermediate connector.
[0016] Figure 5 yes Figure 1 Sectional view along line BB.
[0017] Figure 6 yes Figure 5 Enlarged view of region A.
[0018] Figure 7 This is a structural diagram of a multi-layered, sealed lunchbox with the intermediate connecting parts removed.
[0019] Figure 8 This is a structural diagram of a multi-layered, sealed lunchbox with an added intermediate connector. Detailed Implementation
[0020] like Figure 1 , 2 As shown, the multi-layer combined sealed lunch box of this utility model includes a lid 1, a body 2, an intermediate connector 3, an inner liner 4, and a sealing ring 5.
[0021] The lid 1 includes a horizontal lid surface 11 and four vertical side edges 12. The middle of each side edge is recessed inward to form a second concave structure 13. The concave structure is pivotally connected to two sides with flip-up buckles 14. The lid surface is a square with four rounded corners. The junction between the lid surface and the side edges is also arc-shaped.
[0022] Box 2 is a square with rounded corners at the four corners. It includes a horizontal bottom surface 21 and four vertical arc-shaped side walls 22. The middle of each vertical side wall is recessed inward to form a third concave structure 23. The top surface of the concave structure extends outward with a horizontal protrusion 24. The horizontal bottom surface is a square with rounded corners at the four corners. The junction between the bottom surface and the side walls is also arc-shaped.
[0023] The intermediate connector 3 includes a vertical side panel 31 and a horizontal partition 32. The horizontal partition is also a square with rounded corners. The horizontal partition is located in the middle of the height of the vertical side panel. The four sides of the vertical side panel are recessed inward to form a first concave structure 33. The upper front of the concave structure is provided with a protrusion 34 that can be engaged with the lid latch 14. The lower two sides are pivotally connected with flip-up latches 35 that can be engaged with the box body protrusion 24. When there are two or more intermediate connectors, the latches 35 and protrusions 34 of two adjacent intermediate connectors can also be engaged with each other to form a fastening structure. The inner side of the vertical side panel and the top surface of the horizontal partition form an upper cavity that can accommodate the inner liner. The inner side of the vertical side panel and the bottom surface of the horizontal partition form a lower cavity that can be fitted onto the upper part of the inner liner.
[0024] The inner liner 4 is an open container with compartments 41. Each compartment has a gasket 42 on its side and top surface. The side wall of the inner liner has a fourth concave structure 43 corresponding to the first concave structure 33 of the intermediate connector and the third concave structure 23 of the box body. When the inner liner is placed in the cavity of the box body or the intermediate connector, the fourth concave structure 43 of the inner liner fits perfectly into the third concave structure 23 of the box body or the first concave structure 33 of the intermediate connector, thus fixing the inner liner in place. The height of the inner liner is approximately equal to the distance from the bottom surface of the transverse partition to the bottom surface of the box body, and also approximately equal to the distance from the surface of the transverse partition to the bottom surface of the lid. Figure 5 , 6 As shown;
[0025] The sealing ring 5 also has compartments 51 with the same shape as the inner liner gasket. The sealing ring is fixed to the bottom surface of the lid and the bottom surface of the transverse partition of the intermediate connector, such as... Figure 3 , 4 As shown;
[0026] This utility model discloses a multi-layer combined sealed lunch box. During assembly, first, one inner liner is placed inside the box body, aligning the fourth concave structure 43 of the inner liner with the convex portion of the third concave structure 23 of the box body, thus fixing the inner liner in the box body. Next, the lower cavity of the intermediate connector is placed on the inner liner, aligning the first concave structure 33 of the intermediate connector with the third concave structure 23 of the box body. Then, another inner liner is placed in the upper cavity of the intermediate connector, aligning the fourth concave structure 43 of the inner liner with the convex portion of the first concave structure 33 of the intermediate connector, thus fixing the inner liner in the upper cavity of the intermediate connector. Next, the lid is placed on the inner liner, aligning the second concave structure 23 of the lid with the first concave structure 33 of the intermediate connector. Finally, the movable latches 14 on the lid are fastened to the protrusions 34 of the intermediate connector, and the movable latches 35 on the intermediate connector are fastened to the convex edges of the box body, forming a tight connection structure. Figure 1 , 5 As shown in Figure 6.
[0027] This utility model of a multi-layer combined sealed lunch box can be in different shapes, such as square, round, or polygonal. The intermediate connecting parts can also be added or removed as needed. If there is not much food and the capacity needs to be reduced, the intermediate connecting parts can be removed to make it a simple single-layer lunch box. Figure 7 As shown; if there is a lot of food and you need to increase the capacity, you can add an intermediate connecting piece to make it a three-layer lunchbox, such as... Figure 8 As shown.
[0028] The above is only a specific description of one embodiment of the multi-layer combined sealed lunch box of this utility model. However, this embodiment is not intended to limit the protection scope of this utility model. All equivalent implementations or modifications that do not depart from the technical solution of this utility model, such as changes in the shape of the lunch box and changes in the fastening structure and quantity, should be included in the scope of this utility model.
Claims
1. A multi-layered, sealed lunch box, comprising a lid and a body that can be closed to each other, wherein the lid has several fasteners along its side edge, and the top surface of the body has several corresponding protruding edges, characterized in that: At least one intermediate connector is provided between the lid and the body of the box. The connector has a vertical side panel and a horizontal partition. The outer perimeter of the vertical side panel is the same as that of the lid and the body. The upper part of the outer side surface of the vertical side panel has the same number of fasteners as the lid and can be fastened together, and the lower part has the same number of fasteners as the body. When there are two or more intermediate connectors, the fasteners and protrusions of two adjacent intermediate connectors can also be fastened together to form a fastening structure. The bottom surface of the lid and the bottom surface of the horizontal partition of the intermediate connector are both fixed with sealing rings.
2. The multi-layer combined sealed lunch box according to claim 1, characterized in that: The upper cavity formed by the vertical sidewall of the intermediate connector and the top surface of the transverse partition, and the inner cavity formed by the bottom surface and sidewall of the box body, are all equipped with movable inner liners. The inner liners are open containers with compartments, and gaskets are fixed to the top surface of the sidewalls of each compartment of the inner liner. The sealing rings on the bottom surface of the box lid and the bottom surface of the transverse partition of the intermediate connector correspond to the gasket structure on the top surface of the inner liner.
3. The multi-layer combined sealed lunch box according to claim 2, characterized in that: The vertical sidewall of the intermediate connector has a first concave structure that is recessed inward, and the fasteners and latches on the vertical sidewall are located within the first concave structure; correspondingly, the sidewalls of the lid and the body also have second and third concave structures that are recessed inward, with the fasteners of the lid located within the second concave structure and the convex edge of the body located on the top surface of the third concave structure.
4. The multi-layer combined sealed lunch box according to claim 3, characterized in that: The outer wall of the inner liner is provided with a fourth concave structure corresponding to the first concave structure of the intermediate connector and the third concave structure of the box body.
5. The multi-layer combined sealed lunch box according to claim 4, characterized in that: The horizontal partition of the intermediate connector is located at the middle position of the vertical side wall height. The height of the inner liner is equivalent to the distance from the bottom surface of the horizontal partition to the bottom surface of the box body, and also equivalent to the distance from the surface of the horizontal partition to the bottom surface of the box lid.
6. The multi-layer combined sealed lunch box according to claim 5, characterized in that: The fastener of the box lid is a hinged buckle pivotally connected to the side wall of the second concave structure of the box lid, and the fastener of the intermediate connecting piece is a hinged buckle pivotally connected to the side wall of the first concave structure of the vertical side.
7. The multi-layer combined sealed lunch box according to claim 6, characterized in that: The lunchbox is round, square, or rectangular; there are four buckles on the lid, four protruding edges on the body, and four buckles and protrusions on the middle connector.