Rotary locking lunch box

By using a rotating locking structure and a tongue design secured with staples, the problem of lunch boxes coming loose and being unsafe during transportation is solved, thus improving the stability and safety of the meals.

CN223560236UActive Publication Date: 2025-11-18DONGGUAN SANZE PLASTIC PROD CO LTD
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Patent Information

Application Number
CN202423046064.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-11-18
Estimated Expiration
2034-12-10

AI Technical Summary

Technical Problem

Traditional disposable lunch boxes are prone to coming loose during transportation, making it difficult to guarantee the safety of the food, and customers have difficulty in telling whether they have been opened.

Method used

It adopts a rotary locking structure and a tongue design with staples to achieve a stable lock between the cover and the bottom box, and the status of the staples can be used to determine whether it has been disassembled.

Benefits of technology

This improves the stability and safety of the food, allowing customers to determine whether the food has been removed by observing the staples on the tongue.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a rotary locking lunch box which comprises a bottom bowl and a surface cover. The bottom bowl is provided with a first tongue piece. And a convex column is arranged at the center of the bottom bowl. An inserting groove and a locking groove are formed in the top of the protruding column. The inserting groove is in a 1 / 2 circle shape and extends downwards from the top of the protruding column in the vertical direction. The locking groove is a 1 / 4 circle and extends towards the inner side from the bottom of the inserting groove in the circumferential direction of the protruding column. The surface cover is provided with a second tongue piece. And a locking block is arranged at the center of the surface cover. The locking block comprises a driving part and a locking part. The driving part is in a 1 / 4 cylinder shape. The locking part is in a 1 / 2 disc shape. And 1 / 2 of the locking part is inserted into the locking groove. By means of the rotary locking structure, the first tongue piece and the second tongue piece which are locked through staples are matched, so that locking between the surface cover and the bottom bowl is achieved, the surface cover and the bottom bowl are not prone to loosening, and the stability of food products is good. And meanwhile, the customer can know whether the surface cover is detached or not by observing staples on the first tongue piece and the second tongue piece, so that the safety of food products is improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the field of plastic products, in particular to a rotary locking lunch box. BACKGROUND

[0002] With the rise of the take-out industry, the use of disposable lunch boxes also increases. Generally, a disposable lunch box includes a bottom box and a cover. When assembled, the convex edge of the outer periphery of the cover is clamped with the outer periphery of the bottom box, thereby achieving sealing protection of the food.

[0003] The defects of the traditional disposable lunch box are as follows: first, the delivery of take-out food mainly depends on the take-out riders at present. The take-out riders shuttle in complex traffic conditions, and the food is easy to shake during transportation, which causes the cover and the bottom box to loosen, resulting in leakage of the food. Second, there is no locking structure between the bottom box and the cover, and the number of take-out riders is large. The problem of stealing or adding foreign matter to the customer's food by a few low-quality take-out riders occurs repeatedly, and the customer can hardly distinguish whether the lunch box has been opened during delivery. The safety of the food cannot be guaranteed. SUMMARY

[0004] Therefore, the utility model provides a rotary locking lunch box. The rotary locking structure is used, and the first tongue and the second tongue locked by the staple are used in combination, so that the locking between the cover and the bottom bowl is achieved. The cover and the bottom box are not easy to loosen, and the stability of the food is good. At the same time, the customer can know whether the cover has been disassembled by observing the staple on the first tongue and the second tongue, thereby improving the safety of the food.

[0005] A rotary locking lunch box includes:

[0006] a bottom bowl; the inner side of the periphery of the bottom bowl is provided with an annular clamping groove; the outer side of the periphery of the bottom bowl is provided with an outward convex first tongue; the first tongue is provided with a puncture area for the puncture of a staple; the center of the bottom bowl is provided with a convex column; the top of the convex column is provided with an insertion slot and a locking slot; the insertion slot is a 1 / 2 circle and extends downward along the vertical direction from the top of the convex column; the locking slot is a 1 / 4 circle and extends inward along the circumferential direction of the convex column from the bottom of the insertion slot; and

[0007] a cover connected to the bottom bowl; the inner side of the periphery of the cover is provided with a clamping ring clamping the clamping groove; the outer side of the periphery of the cover is provided with an outward convex second tongue; the vertical projection of the second tongue coincides with that of the first tongue; the second tongue is provided with a hollow area opposite the puncture area; the center of the cover is provided with a locking block; the locking block includes a driving part and a locking part; the driving part is a 1 / 4 cylinder; the locking part is a 1 / 2 disc; and the 1 / 2 of the locking part is inserted into the locking slot.

[0008] The rotating locking bento box is used for storing food in the inner cavity of the bottom bowl. Then, the driving part of the locking block of the cover is inserted into the insertion slot of the protruding column of the bottom bowl. Then, the cover is rotated by 90 degrees towards the first tongue piece. When the first tongue piece coincides with the second tongue piece, the locking part of the locking block is inserted into the locking slot, thereby achieving the locking of the cover and the bottom bowl in the vertical direction. Then, the merchant penetrates the first tongue piece through the hollow area on the second tongue piece by using the staple, so as to lock the first tongue piece and the second tongue piece together by using the staple, thereby achieving the locking of the cover and the bottom bowl in the circumferential direction, and the locking block cannot be pulled out of the locking slot. When the customer needs to enjoy the food, the staple is removed or the first tongue piece and the second tongue piece are torn by using the staple, so as to unlock the cover and the bottom bowl. Through the above design, the rotating locking structure is used, and the first tongue piece and the second tongue piece are locked by using the staple, so as to achieve the locking between the cover and the bottom bowl, the cover and the bottom bowl are not easy to be loosened, and the stability of the food is good. Meanwhile, the customer can know whether the cover is disassembled by observing the staple on the first tongue piece and the second tongue piece, thereby improving the safety of the food.

[0009] In one of the embodiments, the outer side of the periphery of the bottom bowl is further provided with an outwardly protruding third tongue piece; the third tongue piece is spaced apart from the first tongue piece by 90 degrees. The third tongue piece can help the merchant to quickly find the accurate insertion position when the cover is assembled to the bottom bowl.

[0010] In one of the embodiments, the bottom bowl is further provided with a plurality of partitions; the partitions radially radiate outwardly from the outer side of the protruding column to divide the inner cavity of the bottom bowl into a plurality of independent storage areas. The partition design can facilitate the merchant to classify and place different foods, so as to avoid the odor mixing between different foods.

[0011] In one of the embodiments, the bottom of the bottom bowl is provided with a limiting slot matched with the shape of the protruding column. When a plurality of bottom bowls are stored, the limiting slot and the protruding column are connected, so that the bottom bowls are stably stacked together.

[0012] In one of the embodiments, the cover is a transparent cover. The transparent cover can help the customer to directly observe the condition of the food in the bottom bowl.

[0013] In one of the embodiments, the center of the cover is provided with a pressing block; the locking block is arranged on the pressing block; and the pressing block is provided with a pressing part abutting against the top of the protruding column. When the cover is locked with the bottom bowl, the pressing block and the locking block can form a clamping effect on the protruding column, thereby improving the stability of the locking.

[0014] In one of the embodiments, the top of the cover is provided with a handle. The handle can facilitate the merchant and the customer to operate the cover.

[0015] In one of the embodiments, the handle is provided with a cutlery groove for clamping cutlery. The cutlery groove can make the cutlery stably clamped on the cover, and improve the convenience of food delivery. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A perspective view of the rotary locking lunch box in a locked state according to an embodiment of the present application;

[0017] Figure 2 A perspective view of the rotary locking lunch box in a locked state according to an embodiment of the present application; Figure 1

[0018] Figure 3 A perspective view of the rotary locking lunch box in a locked state according to an embodiment of the present application; Figure 1

[0019] Figure 4 A perspective view of the rotary locking lunch box in a locked state according to an embodiment of the present application; Figure 3

[0020] Figure 5 A perspective view of the rotary locking lunch box in a locked state according to an embodiment of the present application; Figure 3

[0021] Figure 6 A perspective view of the rotary locking lunch box in a locked state according to an embodiment of the present application; Figure 1

[0022] Figure 7 A perspective view of the rotary locking lunch box in a locked state according to an embodiment of the present application; Figure 6

[0023] Figure 8 A perspective view of the rotary locking lunch box in a locked state according to an embodiment of the present application; Figure 1

[0024] Figure 9 A perspective view of the rotary locking lunch box in a locked state according to an embodiment of the present application; Figure 8

[0025] Figure 10 A perspective view of the rotary locking lunch box in a locked state according to an embodiment of the present application; Figure 9

[0026] Figure 11 A perspective view of the rotary locking lunch box in a locked state according to an embodiment of the present application; Figure 1

[0027] Figure 12 A perspective view of the rotary locking lunch box in a locked state according to an embodiment of the present application; Figure 11

[0028] Meanings of the reference signs in the drawings are as follows:

[0029] 100 - rotary locking lunch box​​​​​​​​​​​

[0030] 10-bottom bowl, 11-card slot, 12-first tongue, 121-puncture area, 13-convex column, 131-insertion slot, 132-locking slot, 14-limiting slot, 15-third tongue;

[0031] 20-face cover, 21-clasp, 22-second tongue, 221-hollow area, 23-locking block, 231-driving part, 232-locking part, 24-handle, 241-utensil slot, 25-pressing block. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0034] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0035] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated; can be mechanical connection, also can be electrical connection; can be direct connection, also can indirectly connect through the intermediate medium, can be the communication of two element interiors or the interaction of two elements, unless another definite limitation. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can be that the first and second features directly contact, or the first and second features indirectly contact through the intermediate medium. Moreover, the first feature "over", "above" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than the second feature. The first feature "under", "below" and "on" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than the second feature.

[0037] It should be noted that when an element is referred to as "fixed to" or "disposed to" another element, it can be directly on another element or there can be a middle element. When an element is referred to as "connected to" another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0038] As shown in Figures 1 to 12 , it is a rotary locking bento box 100 of an embodiment of the utility model.

[0039] As shown in Figure 1 and Figure 2 , the rotary locking bento box 100 includes: bottom bowl 10 and the face cover 20 connected bottom bowl 10. Wherein, bottom bowl 10 is used to load meal, and the face cover 20 is used to close bottom bowl 10 to achieve the purpose of protecting meal.

[0040] In the following, the rotary locking bento box 100 described above is further explained in conjunction with Figures 1 to 12 .

[0041] As shown in Figure 6As shown, the inner side of the base bowl 10 has an annular groove 11. The outer side of the base bowl 10 has a protruding first tongue 12. The first tongue 12 has a piercing area 121 (a thinned area) for staples to pierce. A protruding post 13 is provided at the center of the base bowl 10. The top of the protruding post 13 has an insertion groove 131 and a locking groove 132. The insertion groove 131 is 1 / 2 circle and extends vertically downward from the top of the protruding post 13. The locking groove 132 is 1 / 4 circle and extends inward from the bottom of the insertion groove 131 along the circumference of the protruding post 13.

[0042] Considering that meals are usually a combination of meat and vegetables, and sometimes may be served with soup, in some embodiments, the base bowl 10 is also equipped with multiple partitions. The partitions radiate radially outward from the outer side of the protrusion 13 to divide the inner cavity of the base bowl 10 into multiple independent storage areas (i.e., the partitions radiate radially outward with the protrusion 13 as the central axis). This partitioned design allows businesses to easily categorize and arrange different dishes, preventing cross-contamination of flavors. For example, three partitions can be installed inside the base bowl 10, forming three separate storage areas for rice, vegetables, and meat.

[0043] Furthermore, considering the convenience of manufacturers shipping and retailers storing materials, the top cover 20 and the bottom bowl 10 are usually stacked separately. Therefore, to facilitate stacking the bottom bowl 10, as follows: Figure 7 As shown, the bottom of the base bowl 10 is provided with a limiting groove 14 that matches the shape of the protrusion 13. When storing multiple base bowls 10, the base bowls 10 can be stably stacked together by using the limiting groove 14 to connect with the protrusion 13.

[0044] like Figure 9 and Figure 10 As shown, the inner side of the periphery of the cover 20 is provided with a retaining ring 21 that engages with the retaining groove 11. For example... Figure 8 As shown, the outer periphery of the cover 20 is provided with a protruding second tongue 22, and combined with... Figure 1 As shown, the projection of the second tongue 22 onto the first tongue 12 in the vertical direction coincides. The second tongue 22 has a hollow area 221 opposite to the puncture area 121. Figure 9 As shown, a locking block 23 is provided at the center of the faceplate 20. Figure 10 As shown, the locking block 23 includes a driving part 231 and a locking part 232, wherein the driving part 231 is 1 / 4 cylindrical and the locking part 232 is 1 / 2 disc shaped. Half of the locking part 232 is inserted into the locking groove 132.

[0045] In some embodiments, the cover 20 is a transparent cover. The transparent cover allows customers to clearly observe the contents of the food in the bottom bowl 10.

[0046] like Figure 8As shown, in this embodiment, the top of the cover 20 is provided with a handle 24. The handle 24 facilitates the operation of the cover 20 by the merchant and the customer.

[0047] Further, the handle 24 can also be provided with a cutlery slot 241. The cutlery slot 241 is used to clamp cutlery. The cutlery slot 241 can make the cutlery stably clamped on the cover 20, improving the convenience of food delivery.

[0048] Working principle:

[0049] As shown in Figure 11 and Figure 12 , in use, the food is received in the inner cavity of the bottom bowl 10. Then, the driving part 231 of the locking block 23 of the cover 20 is inserted into the insertion slot 131 of the protruding column 13 of the bottom bowl 10. Then, the cover 20 is rotated 90° towards the first tongue 12, and in this process, the arc surface of the driving part 231 slides relative to the inner wall of the insertion slot 131, so that the driving part 231 rotates with the center axis of the protruding column 13 as the rotation axis. As shown in Figures 1 to 5 , when the first tongue 12 coincides with the second tongue 22, the locking part 232 of the locking block 23 is embedded into the locking slot 132, achieving the locking of the cover 20 and the bottom bowl 10 in the vertical direction. Then, the merchant penetrates the first tongue 12 through the hollow area 221 on the second tongue 22 by means of the staple, so as to lock the first tongue 12 and the second tongue 22 together by means of the staple, thereby achieving the locking of the cover 20 and the bottom bowl 10 in the circumferential direction, so that the locking block 23 cannot be pulled out of the locking slot 132. When the customer needs to enjoy the food, the staple is removed or the first tongue 12 and the second tongue 22 are torn by means of the staple, so as to unlock the cover 20 and the bottom bowl 10.

[0050] When the bottom bowl 10 and the cover 20 are combined, the locking part 232 and the insertion slot 131 can be aligned, and then the locking block 23 is inserted into the insertion slot 131. Then, the cover 20 is rotated 90° towards the first tongue 12 until the first tongue 12 and the second tongue 22 coincide. In order to make the operation more convenient, as shown in Figure 1 and Figure 6 , in this embodiment, the outer side of the periphery of the bottom bowl 10 can also be provided with an outwardly protruding third tongue 15. The third tongue 15 is spaced 90° from the first tongue 12. The third tongue 15 facilitates the merchant to quickly find the accurate insertion position when assembling the cover 20 to the bottom bowl 10.

[0051] In addition, in order to further strengthen the stability of the combination of the bottom bowl 10 and the cover 20, as shown in Figure 4 and Figure 9As shown, in the embodiment, a pressing block is arranged at the center of the face cover 20. A locking block 23 is arranged on the pressing block. The pressing block is provided with a pressing part abutting against the top of the convex column 13. When the face cover 20 is locked with the bottom bowl 10, the pressing block and the locking block 23 can form a clamping effect on the convex column 13, improving the stability of the locking.

[0052] The above-mentioned rotatable locking bento box 100 utilizes the rotatable locking structure, and cooperates with the first tongue 12 and the second tongue 22 locked by the staple, so as to realize the locking between the face cover 20 and the bottom bowl 10. The face cover 20 and the bottom bowl 10 are not easy to be loosened, and the food stability is good. At the same time, the customer can know whether the face cover 20 is disassembled by observing the staple on the first tongue 12 and the second tongue 22, and the safety of the food is improved.

[0053] The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0054] The above embodiments only express the preferred embodiments of the present application, and the description is more specific and detailed, but it should not be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A rotary latching bento box characterized by comprising: The utility model relates to a stapler, which comprises: a bottom bowl, an annular clamping groove is arranged on the inner side of the periphery of the bottom bowl, a first outward protruding tongue is arranged on the outer side of the periphery of the bottom bowl, a puncture area for puncture by a staple is arranged on the first tongue, a protruding column is arranged at the center of the bottom bowl, an insertion slot and a locking slot are arranged on the top of the protruding column, the insertion slot is a half circle and extends downward along the vertical direction from the top of the protruding column, the locking slot is a quarter circle and extends inward along the circumferential direction of the protruding column from the bottom of the insertion slot; and a cover connected to the bottom bowl, a clamping ring for clamping the clamping groove is arranged on the inner side of the periphery of the cover, a second outward protruding tongue is arranged on the outer side of the periphery of the cover, the second tongue coincides with the first tongue in the vertical direction, the second tongue is provided with a hollow area opposite to the puncture area, a locking block is arranged at the center of the cover, the locking block comprises a driving part and a locking part, the driving part is a quarter cylinder, the locking part is a half disc, and the half of the locking part is inserted into the locking slot. The outer side of the periphery of the bottom bowl is further provided with a third outward protruding tongue, and the third tongue is spaced apart from the first tongue by 90 degrees.

2. The rotary closure bento box according to claim 1, wherein The bottom bowl is further provided with a plurality of partitions, the partitions radiate outward along the radial direction from the outer side of the protruding column to divide the inner cavity of the bottom bowl into a plurality of independent accommodation areas.

3. The rotary closure bento box according to claim 1, wherein The bottom of the bottom bowl is provided with a limiting slot matched with the shape of the protruding column.

4. The rotary closure bento box according to claim 1, wherein The cover is a transparent cover.

5. The rotary latching bento box according to claim 1, wherein The center of the cover is provided with a pressing block, the locking block is arranged on the pressing block, and the pressing block is provided with a pressing part abutting against the top of the protruding column.

6. The rotary closure bento box according to claim 1, wherein The top of the cover is provided with a handle.

7. The rotary closure bento box according to claim 1, wherein The handle is provided with a tableware slot for clamping tableware.

8. The rotary latching bento box according to claim 7, wherein ​