Thermal lunch box bag with leak-proof function
By using a combination of nuts, elastic bands, male and female buckles for fixing, as well as the design of slides, springs and sliders, the problem of liquid leakage inside the lunchbox is solved, achieving a stable clamping and sealing effect for the lunchbox.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI HONWEE PACKING CO LTD
- Filing Date
- 2025-09-15
- Publication Date
- 2026-07-07
AI Technical Summary
Existing food containers are prone to leakage when containing soup or liquid foods due to container displacement, affecting sealing and safety.
The combination of nuts, elastic bands, male and female buckles for fixing, along with the coordinated design of slides, springs and sliders, ensures the stable clamping of the lunchbox and prevents displacement and leakage.
It effectively prevents the food container from shifting inside the bag, improves sealing performance and safety, and prevents liquid leakage.
Smart Images
Figure CN224461238U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of daily necessities, and in particular to an insulated lunch box bag with leak-proof function. Background Technology
[0002] With the fast pace of modern life, portable tableware and lunchboxes are widely used in daily meals, for travel, and for food delivery. To maintain food temperature, existing technologies typically incorporate an insulation layer inside the lunchbox to slow heat loss. However, in actual use, when holding soup or liquid foods, leakage can easily occur if the lunchbox is being handled or tilted, leading to contamination inside and outside the bag, and even soiling surrounding items.
[0003] However, in the existing technology, due to the lack of an effective fixing device to securely position the lunch box body, the lunch box is prone to displacement within the bag during actual use, which can damage the seal between the lid and the box body, leading to leakage of liquid inside the lunch box. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides an insulated lunch box bag with leak-proof function, which aims to improve the problem that the lunch box is prone to displacement within the bag, resulting in liquid leakage inside the lunch box.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a leak-proof insulated lunchbox bag, comprising a lower part and an upper part, wherein a leak-proof layer is fixedly connected to the outer wall of the lower part, a handle is fixedly connected to the upper surface of the upper part, a connecting strap is fixedly connected to the outer wall of the upper part, the outer wall of the connecting strap is fixedly connected to the outer wall of the upper part, the upper part and the lower part are connected by a zipper, the outer wall of the zipper is provided with a pull tab, a storage layer is fixedly connected to the inner wall of the lower part, and a fixing component is provided on the inner wall of the lower part.
[0006] Preferably, the fixing component includes a nut one, which is fixedly connected to the inner wall of the lower part of the dinner bag. An elastic band one is fixedly connected to the outer wall of the nut one. A male buckle is fixedly connected to the outer wall of the elastic band one. A female buckle is snapped onto the outer wall of the male buckle. An elastic band two is fixedly connected to the outer wall of the female buckle. A nut two is fixedly connected to the outer wall of the elastic band two. The outer wall of the nut two is fixedly connected to the inner wall of the lower part of the dinner bag.
[0007] Preferably, a slide is fixedly connected to the inner wall of the placement layer, a slide rail is provided inside the slide, one end of a spring is fixedly connected to the inside of the slide, and a stop block is fixedly connected to the other end of the spring.
[0008] Preferably, the outer wall of the first blocking block is fixedly connected to a first slider, and the outer wall of the first slider is slidably connected to the inner wall of the slide table.
[0009] Preferably, the outer wall of the first blocking block is slidably connected to the inner wall of the first slide rail, and an isolation block is fixedly connected inside the slide table.
[0010] Preferably, the inner wall of the slide table is provided with a slide rail two, and one end of a spring two is fixedly connected inside the slide table.
[0011] Preferably, the other end of the second spring is fixedly connected to the second stop block, and the outer wall of the second stop block is slidably connected to the inner wall of the second slide rail.
[0012] Preferably, the outer wall of the second block is fixedly connected to the second slider, and the outer wall of the second slider is slidably connected to the inner wall of the slide table.
[0013] This utility model has the following beneficial effects:
[0014] 1. In this utility model, the lunch box is fixed by the cooperation between nut one, nut two, elastic band one, elastic band two, male buckle and female buckle, which solves the problem that the lunch box is easy to move inside the bag and cause liquid leakage inside the lunch box. It is beneficial to improve the sealing performance of the bottom of the lunch bag and the safety of use.
[0015] 2. In this utility model, the cooperation between the slide, spring one, spring two, slider one, slider two, block one and block two achieves the effect of clamping the lunch box, which helps to prevent liquid leakage and ensures safety in use. Attached Figure Description
[0016] Figure 1 A perspective view of a leak-proof insulated lunch box bag proposed in this utility model;
[0017] Figure 2 This is a partial structural diagram of the handle of a leak-proof insulated lunch box bag proposed in this utility model.
[0018] Figure 3 This is a partial structural diagram of the male buckle of a leak-proof insulated lunch box bag proposed in this utility model.
[0019] Figure 4 This is a partial structural diagram of the slider of a leak-proof insulated lunch box bag proposed in this utility model.
[0020] Figure 5 This is a cross-sectional view of the lower internal structure of an insulated lunchbox bag with leak-proof function proposed in this utility model.
[0021] Legend:
[0022] 1. Bottom of the dinner bag; 2. Leak-proof layer; 3. Handle; 4. Zipper; 5. Zipper pull; 6. Connecting strap; 7. Storage layer; 8. Nut 1; 9. Elastic band 1; 10. Male buckle; 11. Nut 2; 12. Elastic band 2; 13. Female buckle; 14. Slide table; 15. Slide rail 1; 16. Spring 1; 17. Stop block 1; 18. Slider 1; 19. Isolation block; 20. Slide rail 2; 21. Spring 2; 22. Stop block 2; 23. Slider 2; 24. Top of the dinner bag. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Implementation 1:
[0025] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model provides: a leak-proof insulated lunch box bag, including a lower part 1 and an upper part 24. A leak-proof layer 2 is fixedly connected to the outer wall of the lower part 1. A handle 3 is fixedly connected to the upper surface of the upper part 24. A connecting strap 6 is fixedly connected to the outer wall of the upper part 24. The outer wall of the connecting strap 6 is fixedly connected to the outer wall of the upper part 24. The upper part 24 and the lower part 1 are connected by a zipper 4. A pull tab 5 is provided on the outer wall of the zipper 4. A placement layer 7 is fixedly connected to the inner wall of the lower part 1. A fixing component is provided on the inner wall of the lower part 1.
[0026] Specifically, the upper part 24 of the lunch bag serves to fix the handles 3, ensuring that the handles 3 are stable and reliable when carried. The connecting strap 6 serves to fix the upper part 24 and the lower part 1 of the lunch bag, so that the upper part 24 and the lower part 1 of the lunch bag can fit together firmly. The lower part 1 of the lunch bag fixes the leak-proof layer 2, ensuring that the leak-proof layer 2 is tightly attached to the outer wall of the lower part 1 of the lunch bag, effectively preventing liquid leakage. The lower part 1 of the lunch bag fixes and supports the placement layer 7, which can support the lunch box and keep it stable. The fixing components of the lower part 1 of the lunch bag restrain and stabilize the lunch box on the placement layer 7, preventing the lunch box from shaking during handling or transportation. The zipper 4 connects the upper part 24 and the lower part 1 of the lunch bag, realizing the opening and closing connection of the two parts, and serving to close and fix the lunch bag. The zipper pull 5 on the outer wall of the zipper 4 is used to operate the zipper 4, so that the lunch bag can be opened and closed easily when the zipper pull 5 is pulled.
[0027] Reference Figure 3 The fixing component includes a nut 8, which is fixedly connected to the inner wall of the lower part 1 of the dinner bag. An elastic band 9 is fixedly connected to the outer wall of the nut 8. A male buckle 10 is fixedly connected to the outer wall of the elastic band 9. A female buckle 13 is snapped to the outer wall of the male buckle 10. An elastic band 12 is fixedly connected to the outer wall of the female buckle 13. A nut 11 is fixedly connected to the outer wall of the elastic band 12. The outer wall of the nut 11 is fixedly connected to the inner wall of the lower part 1 of the dinner bag.
[0028] Specifically, when the male buckle 10 is manually pulled, it moves along the guiding direction of the elastic band 9 and inserts into the female buckle 13, which is connected to it, so that the male buckle 10 and the female buckle 13 are tightly fastened. During the fastening process, the elastic band 9 and the elastic band 12 provide elastic cushioning, allowing the male buckle 10 to enter the female buckle 13. At the same time, the nuts 8 and 11 at both ends of the fixing component remain on the inner wall of the lower part 1 of the lunch bag, providing support and stability, thereby achieving the effect of firmly restraining the items inside the lunch bag.
[0029] Implementation 2:
[0030] Reference Figure 5 A slide table 14 is fixedly connected to the inner wall of the placement layer 7. A slide rail 15 is provided inside the slide table 14. One end of a spring 16 is fixedly connected inside the slide table 14. A stop block 17 is fixedly connected to the other end of the spring 16.
[0031] Specifically, the placement layer 7 serves to fix the slide table 14. The slide table 14 has a slide rail 15 inside, which keeps the block 17 on a stable track during sliding and prevents it from deviating. One end of the spring 16 is fixedly connected inside the slide table 14, and the other end of the spring 16 is fixedly connected to the block 17. When the slider 18 is pulled by an external force, the external force is first applied to the block 17. The block 17 moves along the slide rail 15, and at the same time, it drives the spring 16 to be compressed, generating elastic buffer. After the external force disappears, the spring 16 rebounds and pushes the block 17 back to the initial position, thereby keeping the lunch box stable.
[0032] Reference Figure 5 The outer wall of the block 17 is fixedly connected to the slider 18, and the outer wall of the slider 18 is slidably connected to the inner wall of the slide table 14.
[0033] Specifically, when the stop block 17 moves along the slide rail 15, the slider 18 can slide along the inner wall of the slide table 14, thereby limiting the movement direction of the stop block 17 and providing additional smooth support.
[0034] Reference Figure 5 The outer wall of the blocking block 17 is slidably connected to the inner wall of the slide rail 15, and the inner wall of the slide table 14 is fixedly connected to the isolation block 19.
[0035] Specifically, when an external force is applied to the stop block 17, the stop block 17 moves along the slide rail 15, so that the stop block 17 moves along a fixed trajectory during the sliding process to avoid deviation. At the same time, the isolation block 19 fixedly connected inside the slide table 14 is used to limit the range of motion of the stop block 17 to prevent the stop block 17 from deviating from the predetermined track during the sliding process.
[0036] Reference Figure 5 The inner wall of the slide table 14 is provided with a slide rail 20, and one end of a spring 21 is fixedly connected inside the slide table 14.
[0037] Specifically, the inner wall of the slide table 14 is provided with a slide rail 20, which is used to limit and guide the movement of the block 22. One end of the spring 21 is fixedly connected inside the slide table 14, and the other end of the spring 21 is fixedly connected to the block or slider. When the block 22 moves along the slide rail 20, the spring 21 generates an elastic buffer force, so that the slider 23 and the block 22 automatically return to their initial positions after the external force disappears, thereby ensuring that the items on the slide table 14 remain stable.
[0038] Reference Figure 5 The other end of the spring 21 is fixedly connected to the block 22, and the outer wall of the block 22 is slidably connected to the inner wall of the slide rail 20.
[0039] Specifically, when the second block 22 slides on the inner wall of the second slide rail 20, it will always move horizontally along a straight line.
[0040] Reference Figure 5 The outer wall of the second block 22 is fixedly connected to the second slider 23, and the outer wall of the second slider 23 is slidably connected to the inner wall of the slide table 14.
[0041] Specifically, as the second block 22 moves along the second slide rail 20, the second slider 23 slides synchronously along the inner wall of the slide table 14, thus providing additional support and guidance for the second block 22. When the second slider 23 is pulled, the second slider 23 drives the second block 22, and the second spring 21 is compressed or stretched to generate elastic buffer. After the external force disappears, the second spring 21 pushes the second block 22 and the second slider 23 back to the initial position, thus ensuring that the items on the slide table 14 remain stable.
[0042] Working principle: When the lunch box is placed in the inner layer 7 of the lower part 1 of the lunch bag, pulling the male buckle 10 causes the elastic band 9 to stretch. At the same time, pulling the female buckle 13 causes the elastic band 12 to stretch. Then, the male buckle 10 is inserted into the female buckle 13 to achieve a fastening connection, thereby firmly fixing the lunch box on the inner layer 7. This solves the problem that the lunch box is prone to displacement in the bag, which leads to liquid leakage. It also helps to improve the sealing performance and safety of the lower part 1 of the lunch bag.
[0043] When the lunch box is placed on the upper surface of the slide 14 of the inner placement layer 7 of the lower part 1 of the lunch bag, the slider 18 is pulled to drive the block 17 fixedly connected to its outer wall to slide along the slide rail 15. At the same time, the slider 23 is pulled to drive the block 22 fixedly connected to its outer wall to slide along the slide rail 20. During this process, the spring 16 and spring 21 fixedly connected to the outer walls of the block 17 and the block 22 respectively undergo expansion and contraction deformation. Then, the lunch box is placed between the stretched slider 18 and the slider 23. Finally, the slider 18 and the slider 23 are no longer pulled, thereby achieving the clamping and fixing of the lunch box, which helps to prevent liquid leakage and ensures safety in use.
[0044] This leak-proof insulated lunchbox bag not only secures the lunchbox in place during actual use, but also holds the lunchbox in place.
[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A leak-proof insulated lunchbox bag, comprising a lower part (1) and an upper part (24), characterized in that: A leak-proof layer (2) is fixedly connected to the outer wall of the lower part (1) of the lunch bag. A handle (3) is fixedly connected to the upper surface of the upper part (24) of the lunch bag. A connecting strap (6) is fixedly connected to the outer wall of the upper part (24) of the lunch bag. The upper part (24) and the lower part (1) of the lunch bag are connected by a zipper (4). A zipper pull (5) is provided on the outer wall of the zipper (4). A storage layer (7) is fixedly connected to the inner wall of the lower part (1) of the lunch bag. A fixing component is provided on the inner wall of the lower part (1) of the lunch bag. The fixing component includes a screw. The first nut (8) is fixedly connected to the inner wall of the lower part (1) of the lunch bag. The outer wall of the first nut (8) is fixedly connected to the first elastic band (9). The outer wall of the first elastic band (9) is fixedly connected to the male buckle (10). The outer wall of the male buckle (10) is snapped with the female buckle (13). The outer wall of the female buckle (13) is fixedly connected to the second elastic band (12). The outer wall of the second elastic band (12) is fixedly connected to the second nut (11). The outer wall of the second nut (11) is fixedly connected to the inner wall of the lower part (1) of the lunch bag.
2. The insulated lunch box bag with leak-proof function according to claim 1, characterized in that: The inner wall of the placement layer (7) is fixedly connected to a slide (14), and a slide rail (15) is provided inside the slide (14). One end of a spring (16) is fixedly connected inside the slide (14), and a stop block (17) is fixedly connected to the other end of the spring (16).
3. The insulated lunch box bag with leak-proof function according to claim 2, characterized in that: The outer wall of the first block (17) is fixedly connected to the first slider (18), and the outer wall of the first slider (18) is slidably connected to the inner wall of the slide table (14).
4. A leak-proof insulated lunch box bag according to claim 3, characterized in that: The outer wall of the first blocking block (17) is slidably connected to the inner wall of the first slide rail (15), and the interior of the slide table (14) is fixedly connected to the isolation block (19).
5. A leak-proof insulated lunch box bag according to claim 2, characterized in that: The inner wall of the slide (14) is provided with a slide rail (20), and one end of a spring (21) is fixedly connected inside the slide (14).
6. A leak-proof insulated lunch box bag according to claim 5, characterized in that: The other end of the second spring (21) is fixedly connected to the second block (22), and the outer wall of the second block (22) is slidably connected to the inner wall of the second slide rail (20).
7. A leak-proof insulated lunch box bag according to claim 6, characterized in that: The outer wall of the second block (22) is fixedly connected to the second slider (23), and the outer wall of the second slider (23) is slidably connected to the inner wall of the slide table (14).