Lunch box with weighing function

Abstract

The utility model relates to the technical field of lunch boxes, in particular to a lunch box with a weighing function, the lunch box comprises a lunch box outer shell, a positioning inner shell, a weighing assembly and a dinner plate, a weighing sensor and a tray are arranged at the bottom of the lunch box outer shell to realize accurate measurement of the weight of food in the dinner plate; the positioning inner shell is detachably connected with the lunch box outer shell, and the structural stability and the dinner plate placement reliability are ensured through the multi-stage fixing assembly; in addition, the lunch box integrates the design of a storage drawer, a display screen and the like, so that the use convenience is improved; the dinner plate has the technical effects that the weight of food in the dinner plate can be weighed and monitored in real time, and use is convenient and fast.

Description

Technical Field

[0001] This application relates to the technical field of lunch boxes, and in particular to a lunch box with a weighing function. Background Technology

[0002] Lunch boxes are mainly used for food storage and carrying. In daily life and health management, precise control of food intake is crucial for weight management, chronic disease prevention, and nutritional regulation of special populations (such as diabetic patients and fitness enthusiasts).

[0003] To address the issue of dietary control, existing technologies often employ independent weighing devices for food measurement. Specifically, the food-filled lunchbox is placed on a corresponding weighing device to determine the amount of food consumed. This method requires users to carry the weighing device, which is inconvenient; during use, users must transfer the lunchbox to the weighing device after filling it, which is cumbersome; and if the weight of the food on the plate is not as expected, it is necessary to return to the food placement area to retrieve and refill the food, making this method inconvenient to use. Utility Model Content

[0004] To facilitate the weighing of food in a lunchbox, this application provides a lunchbox with a weighing function.

[0005] This application provides a lunchbox with a weighing function, using the following technical solution:

[0006] A lunchbox with a weighing function includes a lunchbox shell, a positioning inner shell, a weighing component, and a plate. The positioning inner shell is detachably disposed inside the lunchbox shell and has openings at the top and bottom. The positioning inner shell has a receiving cavity for accommodating the plate. The weighing component includes a weighing sensor and a tray. The weighing sensor is disposed at the bottom of the lunchbox shell, and the tray is disposed on the weighing sensor. When the plate is placed in the receiving cavity, the bottom of the plate abuts against the tray.

[0007] By adopting the above technical solution, the lunchbox has a weighing function, which can monitor the weight of the food in the plate in real time. The weighing sensor is set at the bottom of the lunchbox shell and contacts the bottom of the plate through the tray, ensuring the accuracy and stability of the weighing data. This design allows users to easily understand the weight information of the food, meeting the needs of dietary health management and precise control; at the same time, the installation method of embedding the plate inside the lunchbox shell makes it convenient and quick for users to use.

[0008] Optionally, the positioning inner shell is provided with a first circumferential edge, and the first circumferential edge is provided with a first receiving groove for placing tableware; the upper surface of the first circumferential edge is also provided with a display screen for displaying the weight of food; the plate is provided with a plurality of second receiving grooves for placing food, the plate is provided with a second circumferential edge, the first circumferential edge is provided with a second positioning groove for accommodating the second circumferential edge, and the first circumferential edge is also provided with a material picking groove, the material picking groove being connected to the second positioning groove.

[0009] By adopting the above technical solution, the first receiving slot on the first ring edge can facilitate users to place tableware, improving the functionality of the lunch box; the display screen on the first ring edge can intuitively display the weight of the food, making it easy for users to understand the specific weight information of the food in the plate; the multiple second receiving slots on the plate can classify and place different types of food, improving the orderliness of food storage; the second positioning slot on the second ring edge cooperates with the second positioning slot on the first ring edge to achieve stable placement of the plate in the positioning inner shell; the design of the material retrieval slot makes it easy for users to take out or put in the plate, improving the convenience of operation.

[0010] Optionally, the first ring is provided with a first positioning ring along its lower surface circumferentially, and the outer shell of the lunch box is provided with a first positioning groove circumferentially for the first positioning ring to abut against.

[0011] By adopting the above technical solution, the cooperation between the first positioning ring and the first positioning groove can realize the circumferential positioning of the positioning inner shell inside the lunch box shell, which can improve the installation accuracy of the positioning inner shell and simplify the assembly process.

[0012] Optionally, it also includes a first fixing component for fixing the positioning inner shell to the outer shell of the lunchbox. The first fixing component includes a first positioning post disposed on the bottom wall of the outer shell of the lunchbox and a second positioning post disposed on the positioning inner shell. The first positioning post has a first positioning hole for the second positioning post to be inserted into, and the first positioning hole extends downward to the lower surface of the outer shell of the lunchbox. The first fixing component also includes a positioning bolt. The second positioning post has a threaded hole. When the lower end of the second positioning post is inserted into the first positioning post, the post body of the positioning bolt can be inserted into the first positioning hole and threadedly connected to the threaded hole.

[0013] By adopting the above technical solution, the positioning inner shell can be firmly fixed inside the lunch box shell, preventing shaking or displacement during use; the plug-in design of the first positioning post and the second positioning post, together with the positioning bolts, is used for fixation; ensuring that the positioning inner shell is accurately and firmly positioned inside the lunch box, improving the reliability and service life of the overall structure.

[0014] Optionally, the lunchbox shell is provided with a storage drawer inside, and the side wall of the lunchbox shell is provided with a slot for inserting or pulling out the storage drawer. The storage drawer includes a drawer body and a drawer cover that are connected to each other. The drawer cover is rotatably connected to the drawer body and can rotate to close the drawer body.

[0015] By adopting the above technical solution, the storage drawer can effectively utilize the internal space of the lunchbox, providing users with an additional storage area for disposable gloves, seasonings or other items, thus improving the functionality and practicality of the lunchbox.

[0016] Optionally, it also includes a second fixing component for preventing the plate from detaching upward from the positioning inner shell. The second fixing component includes a positioning seat and a positioning block. The positioning seat is detachably disposed on the inner wall of the positioning inner shell. The positioning seat has a second positioning hole for the positioning block to pass through from top to bottom. The second fixing component also includes a limiting member for preventing the positioning block from sliding upward out of the second positioning hole, and an unlocking member for unlocking the limiting member.

[0017] Optionally, the limiting component includes a slider and a spring. A groove is provided on the lower side wall of the positioning block for the slider to slide. The spring is disposed between the bottom wall of the groove and the end of the slider. When the positioning block moves the slider downwards to pass through the second positioning hole, the spring can drive the end of the slider to slide out of the groove.

[0018] By adopting the above technical solution, when the positioning block passes through the second positioning hole, the slider can automatically pop out and lock the positioning block under the action of the spring, thereby effectively restricting the positioning block from sliding upward and ensuring that the plate is firmly fixed in the positioning inner shell, preventing the plate from accidentally falling out during transportation or movement.

[0019] Optionally, the unlocking component includes an unlocking block and an unlocking rope. The second ring has an adjustment groove on its upper surface for the unlocking block to slide. The unlocking block slides within the adjustment groove along its length. The upper end of the unlocking rope passes upward through the positioning block and the second ring and is connected to the end of the unlocking block. The lower end of the unlocking rope passes through the spring and is connected to the slider.

[0020] By adopting the above technical solution, the unlocking block and unlocking rope enable users to easily unlock the limiting component. Specifically, when the unlocking block slides along the adjustment groove, it drives the unlocking rope to pull the slider against the spring force, thereby quickly unlocking the positioning block and allowing users to adjust or remove the plate as needed.

[0021] Optionally, it also includes a lunchbox top cover and a third fixing component for closing and fixing the lunchbox top cover onto the positioning inner shell.

[0022] By adopting the above technical solution, adding a top cover to the lunchbox can improve the lunchbox's sealing and heat preservation properties.

[0023] Optionally, the third fixing component includes a buckle rotatably disposed on the top cover of the lunchbox and a buckle strip disposed on the outer side wall of the outer shell of the lunchbox. When the top cover of the lunchbox is closed on the positioning inner shell, the buckle can be rotatably fastened to the buckle strip.

[0024] By adopting the above technical solution, the combined design of the buckle and the locking strip allows the lunchbox lid to quickly position and lock when closed, effectively preventing the lid from coming loose due to vibration or accidental impact during transport. At the same time, this structural design simplifies the opening and closing operation; users only need to simply rotate the buckle to open or close the lunchbox lid, improving ease of use.

[0025] In summary, this application includes at least one of the following beneficial effects:

[0026] 1. By setting a weighing sensor and a tray at the bottom of the lunchbox shell, and making the bottom of the plate directly abut the tray, the weight of the food is accurately measured, which solves the weighing accuracy problem caused by the unstable connection between the plate and the weighing component in the existing technology;

[0027] 2. Adding a lid to the lunchbox can improve its sealing and heat preservation. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of Example 1;

[0029] Figure 2 This is a schematic diagram of the exploded structure of Example 1;

[0030] Figure 3 yes Figure 2 Enlarged structural diagram at point A;

[0031] Figure 4 This is a schematic diagram of the storage drawer in its flip-top configuration;

[0032] Figure 5 This is a cross-sectional view of the lunchbox portion of Example 2;

[0033] Figure 6 yes Figure 5 Enlarged structural diagram at point B;

[0034] Figure 7 This is a structural schematic diagram of the second fixing component;

[0035] Figure 8 This is a schematic diagram of the structure of Example 3;

[0036] Figure 9 This is a schematic diagram of the exploded structure of Example 3.

[0037] Explanation of reference numerals in the attached drawings: 1. Lunchbox outer shell; 11. First positioning groove; 12. Storage drawer; 121. Drawer body; 122. Drawer cover; 2. Positioning inner shell; 21. First ring edge; 211. First receiving groove; 212. Display screen; 213. Second positioning groove; 214. Material retrieval groove; 215. First positioning ring; 3. Weighing component; 31. Weighing sensor; 32. Tray; 4. Dinner plate; 41. Second ring edge; 42. Second receiving groove; 5. First fixing component; 51. First positioning post; 52. Second positioning post; 53. Positioning bolt; 6. Second fixing component; 61. Positioning seat; 62. Positioning block; 63. Limiting component; 631. Slider; 632. Spring; 64. Unlocking component; 641. Unlocking block; 642. Unlocking rope; 7. Lunchbox top cover; 8. Third fixing component; 81. Buckle; 82. Buckle strip. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0039] Example 1:

[0040] This application discloses a lunchbox with a weighing function. (Refer to...) Figure 1 and Figure 2 The lunchbox includes an outer shell 1, a positioning inner shell 2, a weighing component 3, and a plate 4. The positioning inner shell 2 is detachably installed inside the outer shell 1 and has openings at the top and bottom. The positioning inner shell 2 has a cavity for accommodating the plate 4. The weighing component 3 includes a weighing sensor 31 and a tray 32. The weighing sensor 31 is located at the bottom of the outer shell 1, and the tray 32 is located on the weighing sensor 31. When the plate 4 is placed in the cavity, the bottom of the plate 4 abuts against the tray 32, which realizes accurate measurement of food weight and allows for real-time monitoring of food weight, facilitating adjustment and control of food quantity.

[0041] Reference Figure 1 and Figure 2Specifically, the outer shell 1 of the lunchbox mainly consists of a bottom plate and four interconnected side plates on the bottom plate, which are the main load-bearing parts. To facilitate the user's grip or lifting of the lunchbox, the side plates of the outer shell 1 are preferably designed to slope outward from bottom to top. The positioning inner shell 2 is mainly composed of four connected side plates, forming a receiving cavity between the four side plates. To facilitate the positioning of the tray 32, the four side plates preferably enclose a rectangular space, so that when the tray 32 is placed in the receiving cavity of the positioning inner shell 2, its side wall abuts against the side plate of the positioning inner shell 2. At this time, under the limitation of the positioning inner shell 2, the tray 32 is placed horizontally, and even when it moves slightly downward due to the weight of the lunchbox, it still remains horizontal.

[0042] Reference Figure 2 and Figure 3 In this embodiment, a first annular edge 21 is fixed on the outer wall of the upper end of the positioning inner shell 2, and the first annular edge 21 is arranged circumferentially along the four side plates of the positioning shell; a first positioning ring 215 is fixed circumferentially on the lower surface of the first annular edge 21, and a first positioning groove 11 is preferably formed on the upper surface of the side plate of the lunch box shell 1 for the first positioning ring 215 to abut against, so that when the first positioning ring 215 is inserted from top to bottom and snapped into the first positioning groove 11, the positioning inner shell 2 is snapped onto the lunch box shell 1. Preferably, the first positioning groove 11 is formed on the outer wall of the side plate of the lunch box shell 1, so that dirt is not easily allowed to enter the lunch box shell 1 from the connection between the positioning inner shell 2 and the lunch box shell 1.

[0043] Reference Figure 2 and Figure 3 In this embodiment, one side panel of the first ring edge 21 is enlarged, and the enlarged portion preferably has a first receiving groove 211 and a display screen 212. The first receiving groove 211 can be used to place tableware such as chopsticks and spoons; the display screen 212 is connected to the weighing sensor 31 and is used to display the weight of the food placed on the plate 4 in real time. Furthermore, a button module can also be provided on the first ring edge 21 for controlling the operation of the weighing sensor 31.

[0044] The plate 4 is provided with multiple second receiving slots 42 for placing food. Similarly, a second ring edge 41 is fixed circumferentially on the upper outer wall of the plate 4. A second positioning groove 213 is provided circumferentially on the first ring edge 21 for the second ring edge 41 to abut against. The second positioning groove 213 is connected to the receiving cavity. When the bottom of the plate 4 is placed against the tray 32, the second ring edge 41 falls into the second positioning groove 213. It should be noted that at this time, the bottom wall of the second positioning groove 213 does not contact the second ring edge 41 to avoid affecting the weighing. Furthermore, a material retrieval groove 214 is also provided on the first ring edge 21. The material retrieval groove 214 is connected to the second positioning groove 213, and the plate 4 can be easily removed from the positioning inner shell 2 through the material retrieval groove 214.

[0045] Reference Figure 2 and Figure 4 In an optional embodiment, the outer shell 1 of the lunchbox is further provided with a storage drawer 12, which can be used to store items such as disposable gloves, toothpicks, and dental floss. Preferably, the storage drawer 12 is located between the bottom wall of the outer shell 1 and the tray 32, and the storage drawer 12 does not contact the tray 32. A slot is provided on the side wall of the outer shell 1 for inserting or removing the storage drawer 12. The storage drawer 12 includes a drawer body 121 and a drawer cover 122 connected to each other. The drawer cover 122 is rotatably connected to the drawer body 121 and can rotatably close onto the drawer body 121 to seal it. Preferably, the drawer body 121 and the drawer cover 122 can be made of plastic. Plastic is easy to mold and has low cost, and it also has a certain degree of toughness, enabling the rotatable connection between the drawer cover 122 and the drawer body 121.

[0046] In an optional embodiment, the lunchbox further includes a first fixing component 5 for fixing the inner positioning shell 2 to the outer lunchbox shell 1. The first fixing component 5 includes a first positioning post 51 disposed on the bottom wall of the outer lunchbox shell 1, and a second positioning post 52 fixed to the lower surface of the first circumferential edge 21. The upper surface of the first positioning post 51 has a first positioning hole for the second positioning post 52 to be inserted into, and the first positioning hole extends downward to the lower surface of the outer lunchbox shell 1. The first fixing component 5 also includes a positioning bolt 53. The lower surface of the second positioning post has a threaded hole. When the lower end of the second positioning post 52 is inserted into the first positioning post 51, the post body of the positioning bolt 53 can be inserted from bottom to top into the first positioning hole and threadedly connected to the threaded hole, thereby fixing the inner positioning shell 2. Multiple first fixing components 5 can be arranged circumferentially along the bottom wall of the outer lunchbox to improve the fixing effect.

[0047] The implementation principle of a lunchbox with a weighing function in this application embodiment is as follows: by setting a weighing sensor 31 and a tray 32 to weigh the plate 4, the food placed in the plate 4 can be accurately weighed, and the weight can be displayed in real time through the display screen 212, so that users can accurately grasp the weight of the food they have ingested; by setting a first accommodating slot 211, a second accommodating slot 42 and a storage drawer 12, it can be used to hold food and various tableware, which is convenient for users; at the same time, through the detachable structure and various positioning and matching structures, the lunchbox can be quickly assembled and disassembled.

[0048] Example 2:

[0049] The difference between this embodiment and Embodiment 1 is the addition of a second fixing component 6, used to prevent the lunchbox from detaching upwards from the positioning inner shell 2 during use. (Refer to...) Figure 5 and Figure 6Specifically, the second fixing component 6 includes a positioning seat 61 and a positioning block 62. The positioning seat 61 is detachably fixed to the inner wall of the positioning inner shell 2 by means of screws or the like. The positioning seat 61 has a second positioning hole for the positioning block 62 to pass through from top to bottom. The positioning block 62 is fixed to the lower surface of the second ring edge 41, and the positioning block 62 can be set as a rectangular block.

[0050] Reference Figure 6 and Figure 7 The second fixing component 6 also includes a limiting member 63 that restricts the positioning block 62 from sliding upward out of the second positioning hole, and an unlocking member 64 for unlocking the limiting member 63. The limiting member 63 includes a slider 631 and a spring 632. A groove for sliding the slider 631 is provided on the lower side wall of the positioning block 62. The spring 632 is disposed between the bottom wall of the groove and the end of the slider 631. When the plate 4 is placed on the tray 32, the positioning block 62 simultaneously drives the slider 631 downward through the second positioning hole. The spring 632 can drive the end of the slider 631 to slide out of the groove. At this time, the slider 631 can have a certain distance between it and the lower surface of the positioning seat 61, or it can abut against the lower surface of the positioning seat 61. It should be noted that the slider 631 is not subjected to a downward force at this time and will not affect the weight of the tray 32.

[0051] Alternatively, to prevent the slider 631 from dislodging from the groove, a rectangular block can be provided on the side wall of the slider 631, and a rectangular groove can be provided on the positioning block 62. The sliding engagement between the rectangular block and the rectangular groove can restrict the slider 631 from completely dislodging from the groove.

[0052] The unlocking component 64 includes an unlocking block 641 and an unlocking rope 642. An adjustment groove for sliding the unlocking block 641 is formed on the upper surface of the second ring edge 41. The unlocking block 641 slides within the adjustment groove along its length. Preferably, to ensure the stability of the unlocking block 641's sliding, a groove can be formed on the side wall of the unlocking block 641 along its length. A protrusion is provided on the side wall of the second ring edge 41 corresponding to the adjustment groove. The cooperation between the protrusion and the groove allows the unlocking block 641 to slide stably within the adjustment groove. The upper end of the unlocking rope 642 passes upward through the positioning block 62 and the second ring edge 41 and connects to the end of the unlocking block 641. The lower end of the unlocking rope 642 is bent and passes through the spring 632 and connects to the slider 631. A rope hole is correspondingly formed in the positioning block 62 for the unlocking rope 642 to pass through.

[0053] In use, when the unlocking block 641 is slid away from the unlocking rope 642, the unlocking rope 642 will drive the slider 631 to slide into the groove. When the slider 631 is completely slid into the groove, the plate 4 can be taken out upwards.

[0054] Alternatively, for ease of operation, a guide slope can be provided on the lower surface of the slider 631. When the positioning block 62 passes downward through the second positioning hole, the guide slope will automatically drive the slider 631 into the groove without the need for control by the unlocking rope 642. Also optionally, two sliders 631 can be symmetrically arranged on the positioning block 62, and the unlocking rope 642 can be split in two at its lower end and connected to the two sliders 631 respectively.

[0055] Example 3:

[0056] The difference between this application and the above embodiment is that a lunch box top cover 7 and a third fixing component 8 are added. The lunch box top cover 7 is closed onto the positioning inner shell 2 by the third fixing component 8, which can form an air layer at the top of the plate 4. Through the synergistic effect of the lunch box top cover 7 and the air layer, the food in the plate 4 can be effectively kept warm.

[0057] Reference Figure 8 and Figure 9 Specifically, a buckle 81 is rotatably mounted on the outer wall of the lunchbox top cover 7, and a buckle 81 is fixedly mounted on the outer wall of the lunchbox outer shell 1. When the lunchbox top cover 7 is closed on the positioning inner shell 2, the buckle 81 can be rotated to engage with the buckle strip 82. Preferably, four sets of the third fixing components 8 are arranged circumferentially along the lunchbox outer shell 1 and the lunchbox top cover 7, thereby stably fixing the lunchbox top cover 7 to the positioning inner shell 2. Preferably, the buckle 81 can be made of metal or plastic, so that it has a certain elasticity and can be deformed to a certain extent before being locked onto the buckle strip 82.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lunch box with a weighing function, characterized in that: The utility model relates to a lunch box, including lunch box shell (1), positioning inner shell (2), weighing assembly (3) and dinner plate (4), positioning inner shell (2) can be detached and arranged in lunch box shell (1), positioning inner shell (2) is open up and down, positioning inner shell (2) is provided with the accommodating cavity for accommodating dinner plate (4) in, weighing assembly (3) includes weighing sensor (31) and tray (32), weighing sensor (31) is arranged at the bottom of lunch box shell (1), tray (32) is arranged on weighing sensor (31), when dinner plate (4) is placed in the accommodating cavity, the bottom of dinner plate (4) is abutted on tray (32).

2. The lunch box with a weighing function according to claim 1, characterized in that: Positioning inner shell (2) is provided with first ring (21) on circumference, first ring (21) is provided with first accommodating groove (211) for placing tableware on, the upper surface of first ring (21) is further provided with display screen (212) for showing food weight, dinner plate (4) is provided with a plurality of second accommodating grooves (42) for placing food, dinner plate (4) is provided with second ring (41) on circumference, first ring (21) is provided with second positioning groove (213) for accommodating second ring (41) on circumference, first ring (21) is further provided with material taking groove (214), and material taking groove (214) is communicated with second positioning groove (213).

3. The lunch box with the weighing function according to claim 2, characterized in that: The lower surface of first ring (21) is provided with first positioning ring (215) on circumference, and the first positioning ring (215) is abutted on the first positioning groove (11) of lunch box shell (1).

4. The lunch box with the weighing function according to claim 3, characterized in that: Further include first fixing assembly (5) for fixing positioning inner shell (2) on lunch box shell (1), first fixing assembly (5) includes first positioning column (51) arranged on the bottom wall of lunch box shell (1) and second positioning column (52) arranged on positioning inner shell (2), first positioning hole is formed in first positioning column (51) for inserting second positioning column (52), and first positioning hole penetrates to the lower surface of lunch box shell (1) downward, first fixing assembly (5) further includes positioning bolt (53), threaded hole is formed in second positioning column (52), when the lower end of second positioning column (52) is inserted into first positioning column (51), the shank portion of positioning bolt (53) can be inserted into first positioning hole and be screw connected with threaded hole.

5. The lunch box with a weighing function according to claim 2, characterized in that: Lunch box shell (1) is provided with storage drawer (12) in, and the slot is formed in the side wall of lunch box shell (1) for inserting or extracting storage drawer (12), storage drawer (12) includes drawer body (121) and drawer cover plate (122) connected with each other, drawer cover plate (122) is rotatably connected on drawer body (121), and drawer cover plate (122) can be rotatably closed on drawer body (121) to close drawer body (121).

6. The lunch box with the weighing function according to any one of claims 2-5, characterized in that: Also include a second fixing assembly (6) for limiting the tray (4) to the positioning inner shell (2) upward out of the positioning, the second fixing assembly (6) includes positioning seat (61) and positioning block (62), the positioning seat (61) is detachable arranged on the inner side wall of the positioning inner shell (2), the positioning seat (61) is provided with the second positioning hole for the positioning block (62) from up to down, the second fixing assembly (6) further includes limiting piece (63) for limiting the positioning block (62) to slide out of the second positioning hole, and the unlocking member (64) for unlocking the limiting piece (63).

7. The lunch box with the weighing function according to claim 6, characterized in that: The limiting piece (63) includes a sliding block (631) and a spring (632), the lower end side wall of the positioning block (62) is provided with a sliding groove for the sliding block (631) to slide, the spring (632) is arranged between the sliding groove inner bottom wall and the end of the sliding block (631), when the positioning block (62) drives the sliding block (631) to pass through the second positioning hole, the spring (632) can drive the end of the sliding block (631) to slide out of the sliding groove.

8. The lunch box with the weighing function according to claim 7, characterized in that: The unlocking member (64) includes an unlocking block (641) and an unlocking rope (642), the second ring along (41) upper surface is provided with an adjusting groove for the unlocking block (641) to slide, the unlocking block (641) is limited to slide along the length direction of the adjusting groove in the adjusting groove, the upper end of the unlocking rope (642) is upwardly threaded through the positioning block (62) and the second ring along (41) and connected with the end of the unlocking block (641), the lower end of the unlocking rope (642) is threaded through the spring (632) and connected with the sliding block (631).

9. The lunch box with the weighing function according to any one of claims 2-5, characterized in that: Also include a lunch box top cover (7), and a third fixing assembly (8) for fixing the lunch box top cover (7) on the positioning inner shell (2).

10. The lunch box with a weighing function according to claim 9, characterized in that: The third fixing assembly (8) includes a buckle ring (81) rotatably arranged on the lunch box top cover (7), and a buckle strip (82) arranged on the outer side wall of the lunch box shell (1), when the lunch box top cover (7) is covered on the positioning inner shell (2), the buckle ring (81) can be rotatably buckled on the buckle strip (82).

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