Lunch box structure
By introducing snap-fit components and a breathable and heat-insulating structure into the lunchbox, the problem of poor lid stability has been solved, achieving stable sealing and heat preservation, reducing food spillage, and improving ease of use.
Patent Information
- Application Number
- CN202422899717.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-27
Smart Images

Figure CN223508845U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of food packaging technology, and in particular to a lunch box structure. Background Technology
[0002] In order to separate rice containers, various dish containers, and soup containers for easy consumption, existing paper lunch boxes are usually made into a single piece. The T-shaped dividers glued inside the box are prone to dislodging during the handling of the paper lunch boxes due to collisions between the rice containers, various dish containers, and soup containers, resulting in structural instability.
[0003] In the prior art, patent (CN209921804U) proposes a structure for a lunchbox, including: a bottom box, a top cover, and an inner liner. The top cover fits onto the bottom box, and the inner liner is accommodated within the bottom box. The edge of the inner liner abuts against the inner wall of the bottom box. The inner liner includes a bottom plate and at least one side plate. The bottom plate and the side plate are folded together to form at least one strip partition. The side plate is folded to form a triangular clamp corresponding to the position of the strip partition. The triangular clamp secures the strip partition. The side plate abuts against the inner wall of the adjacent bottom box. This utility model uses the strip partition to divide the accommodating space of the bottom box into multiple independent spaces, and uses the triangular clamp to improve the impact resistance of the strip partition. The side plate abuts against the inner wall of the adjacent bottom box, and the edge of the inner liner abuts against the inner wall of the bottom box, so that the inner liner can be firmly installed inside the bottom box. Therefore, the structure of this utility model is simple and stable.
[0004] However, in the aforementioned existing technologies, the stability after the top cover is closed is poor, and it is easy to automatically flip over, causing the loaded food to spill out, making it inconvenient to use. Utility Model Content
[0005] The purpose of this utility model is to provide a lunch box structure that solves the problems of poor stability after the top cover is closed, easy automatic flipping, causing food to spill and making it inconvenient to use.
[0006] To achieve the above objectives, this utility model provides a lunchbox structure, including a bottom box and a top box. The top box includes a box body, a heat-insulating component, a ventilating component, and two snap-fit components. Both snap-fit components are fixedly connected to the box body and are located on both sides of the box body. The ventilating component is fixedly connected to the box body and is located above the box body. The heat-insulating component is fixedly connected to the box body and is located on the inner wall of the box body.
[0007] The insulation component includes a mounting frame and aluminum foil. The aluminum foil is fixedly connected to the mounting frame and located on the inner wall of the mounting frame. The mounting frame is fixedly connected to the box body and located on the inner side of the box body.
[0008] The breathable component includes a breathable tube and a cap. The cap is rotatably connected to the breathable tube and is located above the breathable tube. The lower part of the breathable tube is fixedly connected to the box body and is located above the box body.
[0009] Each of the snap-fit components includes a positioning block and a snap-fit plate. The snap-fit plate is fixedly connected to the positioning block and is located below the positioning block. The positioning block is fixedly connected to the box body and is located on one side of the box body.
[0010] The bottom box includes a support box, a skirt, multiple reinforcing ribs and partitions. The partitions are fixedly connected to the support box and located at the inner bottom of the support box. Each reinforcing rib is fixedly connected to the support box and located on the periphery of the support box. The skirt is fixedly connected to the support box and located on the front side of the support box.
[0011] This utility model discloses a lunch box structure in which the top box is secured to the box body by two clamping plates. At the same time, the aluminum foil and the vent pipe are used for heat preservation and ventilation, which improves the food preservation effect. This design is practical and solves the problems of poor stability after the top cover is closed, easy automatic flipping, causing food to spill and making it inconvenient to use. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0013] Figure 1 This is a schematic diagram of the overall structure of a lunchbox according to this utility model.
[0014] Figure 2 This is a front view of a lunchbox structure according to this utility model.
[0015] Figure 3 This is the utility model Figure 2 A sectional view along line AA.
[0016] Figure 4 This is the utility model Figure 3 BB line section view.
[0017] Figure 5 This is the utility model Figure 4 Enlarged view of the local structure at point C.
[0018] 101-Bottom box, 102-Top box, 103-Box body, 104-Insulation component, 105-Ventilation component, 106-Snap-fit component, 107-Mounting frame, 108-Tin foil, 109-Ventilation pipe, 110-Pipe cap, 111-Positioning block, 112-Clamping plate, 113-Carrier box, 114-Skirt, 115-Firming strip plate, 116-Partition plate. Detailed Implementation
[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0020] Please see Figures 1-5 ,in Figure 1 This is a schematic diagram of the overall structure of a lunchbox according to this utility model. Figure 2 This is a front view of a lunchbox structure according to this utility model. Figure 3 This is the utility model Figure 2 AA-line sectional view, Figure 4 This is the utility model Figure 3 BB line section view, Figure 5 This is the utility model Figure 4 Enlarged view of the local structure at point C.
[0021] This utility model provides a lunch box structure, including a bottom box 101 and a top box 102. The top box 102 includes a box body 103, a heat insulation component 104, a ventilation component 105, and two snap-fit components 106. The heat insulation component 104 includes a mounting frame 107 and aluminum foil 108. The ventilation component 105 includes a ventilation tube 109 and a tube cap 110. Each snap-fit component 106 includes a positioning block 111 and a locking plate 112. The bottom box 101 includes a support box 113, a skirt 114, multiple reinforcing plates 115, and a partition 116.
[0022] In this specific embodiment, both snap-fit components 106 are fixedly connected to the box body 103, the venting component 105 is fixedly connected to the box body 103, the insulation component 104 is fixedly connected to the box body 103, the tin foil 108 is fixedly connected to the mounting frame 107, the mounting frame 107 is fixedly connected to the box body 103, the tube cap 110 is rotatably connected to the venting tube 109, the lower part of the venting tube 109 is fixedly connected to the box body 103, the locking plate 112 is fixedly connected to the positioning block 111, and the positioning block 111 is fixedly connected to the box body 103. 03 Fixed connection: The partition 116 is fixedly connected to the carrier box 113, each of the reinforcing ribs 115 is fixedly connected to the carrier box 113, and the skirt 114 is fixedly connected to the carrier box 113. The top box 102 is fixedly connected to the box body 103 by two clamping plates 112. At the same time, it works with the tin foil 108 and the vent pipe 109 to keep the food warm and ventilate, which improves the food preservation effect. This design is practical and solves the problems of poor stability after the top cover is closed, easy automatic flipping, causing the loaded food to spill and making it inconvenient to use.
[0023] The two snap-fit components 106 are located on both sides of the box body 103, the ventilated component 105 is located above the box body 103, and the heat-insulating component 104 is located on the inner wall of the box body 103. After the box body 103 and the carrier box 113 are closed, the skirt 114 provides a good sealing effect and reduces the risk of food spillage. The skirt 114 has grooves on both sides that are compatible with the corresponding snap-fit plates 112. Users can stabilize the box body 103 by snapping the snap-fit plates 112 into the grooves.
[0024] Secondly, the aluminum foil 108 is located on the inner wall of the mounting frame 107, which is located inside the box body 103. The tube cap 110 is located above the vent pipe 109, and the lower part of the vent pipe 109 is located above the box body 103. After the box body 103 is secured to the upper part of the carrier box 113 by the two clamping plates 112, the aluminum foil 108 helps maintain the temperature of the food inside the carrier box 113, preventing the food from cooling down during transportation and affecting its edibility. There are small exhaust holes between the cap 110 and the vent pipe 109. The number of exhaust holes can be adjusted by rotating the cap 110, thereby controlling the rate of heat loss and achieving manual temperature control. The aluminum foil 108 is detached and fixed inside the mounting frame 107 and can be reused when it is not damaged. When the aluminum foil 108 needs to be replaced, it can be removed directly and a new aluminum foil 108 can be manually installed to ensure that the food inside the lunch box is kept warm each time it is transported.
[0025] Meanwhile, the card plate 112 is located below the positioning block 111, the positioning block 111 is located on one side of the box body 103, the partition 116 is located at the inner bottom of the carrier box 113, each of the reinforcing ribs 115 is located on the periphery of the carrier box 113, and the skirt 114 is located on the front side of the carrier box 113. The partition 116 facilitates the compartmentalization of different types of food. During use, the aluminum foil 108 needs to be pierced through a small hole to prevent hot air from being unable to escape from the carrier box 113. During transportation, the box body 103 is closed, and the card plates 112 on both sides of the box body 103 are aligned with the grooves on the inner side of the skirt 114 to achieve a snap-fit, keeping the box body 103 and the carrier box 113 in a closed state. The multiple reinforcing ribs 115 also help prevent users from being burned when handling the food, providing protection. At the same time, users can also adjust the rate of hot air exhaust by rotating the cap 110 to slow down heat loss.
[0026] In this embodiment, after the box body 103 and the carrier box 113 are closed, the skirt 114 provides a good seal, reducing the risk of food spillage. The skirt 114 has grooves on both sides that mate with the corresponding retaining plates 112. Users can stabilize the box body 103 by engaging the retaining plates 112 and aligning them with the grooves. After the box body 103 is secured to the carrier box 113 by the two retaining plates 112, the aluminum foil 108 maintains the temperature of the food inside the carrier box 113, preventing it from cooling down during transport and affecting its edibility. A small vent hole is located between the cap 110 and the vent pipe 109. The number of vent holes can be adjusted by rotating the cap 110, thereby controlling the rate of heat loss and achieving manual temperature control. The aluminum foil 108 can be detached and fixed to the mounting... The inner side of frame 107 can be reused when there is no damage. When the aluminum foil 108 needs to be replaced, it can be removed directly and a new aluminum foil 108 can be manually installed to ensure that the food inside the lunch box is kept warm each time it is transported. The partition 116 is designed to facilitate the filling of different types of food in separate sections. When using the lunch box, the aluminum foil 108 needs to be pierced through a small hole to prevent hot air from being trapped in the carrier box 113. When transporting the lunch box, the box body 103 is closed, and the locking plates 112 on both sides of the box body 103 are aligned with the grooves on the inner side of the skirt 114 to achieve a locking action, keeping the box body 103 and the carrier box 113 in a closed state. The multiple rib plates 115 also help prevent users from being burned when handling the lunch box, providing protection. At the same time, users can also adjust the rate of hot air exhaust by rotating the tube cap 110 to slow down heat loss.
[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.
Claims
1. A lunchbox structure, comprising a bottom box, characterized in that, It also includes a top box, which includes a box body, a heat insulation component, a ventilation component, and two snap-fit components. The two snap-fit components are fixedly connected to the box body and are located on both sides of the box body respectively. The ventilation component is fixedly connected to the box body and is located above the box body. The heat insulation component is fixedly connected to the box body and is located on the inner wall of the box body.
2. The lunchbox structure as described in claim 1, characterized in that, The insulation component includes a mounting frame and aluminum foil. The aluminum foil is fixedly connected to the mounting frame and located on the inner side wall of the mounting frame. The mounting frame is fixedly connected to the box body and located on the inner side of the box body.
3. The lunchbox structure as described in claim 2, characterized in that, The breathable component includes a breathable tube and a cap. The cap is rotatably connected to the breathable tube and is located above the breathable tube. The lower part of the breathable tube is fixedly connected to the box body and is located above the box body.
4. The lunchbox structure as described in claim 3, characterized in that, Each of the snap-fit components includes a positioning block and a locking plate, the locking plate being fixedly connected to the positioning block and located below the positioning block, and the positioning block being fixedly connected to the housing and located on one side of the housing.
5. The lunchbox structure as described in claim 4, characterized in that, The bottom box includes a support box, a skirt, multiple reinforcing ribs and partitions. The partitions are fixedly connected to the support box and located at the inner bottom of the support box. Each reinforcing rib is fixedly connected to the support box and located on the periphery of the support box. The skirt is fixedly connected to the support box and located on the front side of the support box.
Citation Information
Patent Citations
Lunch box structure
CN209921804U