Lunch box

Abstract

The utility model discloses a lunch box, which comprises a box cover and a box body, the box cover comprises a cover body and a plurality of transparent mounting pieces distributed at intervals along the circumferential direction of the cover body, the plurality of mounting pieces and the cover body are manufactured into a whole through secondary injection molding, a mounting position is formed between every two adjacent mounting pieces, and a buckle is rotatably connected in each mounting position; a plurality of grooves corresponding to the buckles are formed in the outer side wall of the box body in the circumferential direction, and clamping plates are connected into the grooves. The buckle is connected to the clamping plate in a clamped mode, and the outer side wall of the buckle is flush with the outer side wall of the box body. The lunch box cover is high in mechanical strength, high in identification degree, good in attractiveness, good in buckling connection stability and good in sealing effect.

Description

Technical Field

[0001] This application relates to the technical field of daily necessities, and specifically relates to a lunch box. Background Art

[0002] In daily life, people often use lunch boxes to hold or preserve food, so that the food remains fresh or warm to obtain a better taste. The lunch boxes of related technologies include a lid and a box body. The lid is generally injection-molded from plastic, and the box body can be made of plastic or stainless steel. In order to make the lunch box have heat preservation performance and sealing performance, a buckle is provided around the lid, and a clamping block for the buckle to be clamped is provided on the box body, and a sealing ring is provided between the lid and the box body. For example, the portable lunch box disclosed in the Chinese patent application with the publication number CN219661115U has a clamping ring provided at the opening at the top of the lunch box body, and a clamping plate cooperating with the clamping ring is provided on the lunch box lid through a rotating shaft. The clamping cooperation between the clamping plate and the clamping ring realizes the locking of the lid and the box body; another example is the lunch box disclosed in the Chinese patent application with the publication number CN221813418U, where the first buckle on the lid is rotatably connected to the lid through a first insertion rod, and the first buckle is clamped with the clamping ring at the edge of the opening at the top of the box body; another example is the lunch box disclosed in the Chinese patent application with the publication number CN219661112U, where a clamping strip is provided at the opening at the top of the box body, and a buckle connected to the clamping strip is connected to the edge of the side wall of the lid.

[0003] The lunch boxes of the above-mentioned related technologies generally have the following deficiencies: In order to ensure the sealing performance between the lid and the box body, the clamping force between the buckle on the lid and the box body is generally designed to be relatively large; however, since most of the lids of lunch boxes are injection-molded at one time, their overall thickness is uniform, and due to cost considerations, the wall thickness of the lid is generally set to be relatively thin, resulting in poor overall mechanical strength of the lid. Therefore, the stability of the connection between the buckle and the lid is poor; furthermore, since the lid is injection-molded at one time, the color is single, the recognition rate is not high, and the aesthetic degree is poor; in addition, the buckle on the lid is clamped with the step at the opening at the top of the box body, but due to the defects of low strength, easy deformation and poor extrusion resistance at the mouth of the box body, the sealing performance between the lid and the box body is not good, and the heat preservation or insurance effect is poor. Summary of the Utility Model

[0004] The technical problem to be solved by this application is to overcome the above-mentioned defects of the prior art and provide a lunch box with high mechanical strength of the lid, strong recognition, good aesthetic degree, good stability of the buckle connection, and good sealing effect.

[0005] The technical solution of this application is to provide a lunch box with the following structure: including a box cover and a box body, the box cover includes a cover body and a plurality of transparent mounting parts spaced circumferentially along the cover body, and the plurality of mounting parts and the cover body are integrally formed by secondary injection molding. An installation position is formed between two adjacent mounting parts, and a buckle is rotatably connected in each installation position; a plurality of grooves corresponding to the buckles are provided on the outer side wall of the box body along the circumference, and a clamping plate is connected in the grooves; the buckle is clamped on the clamping plate, and the outer side wall of the buckle is flush with the outer side wall of the box body.

[0006] In some embodiments, two coaxial mounting holes are provided on the two opposite inner side walls of two adjacent mounting parts, and two rotating shafts rotatably connected in the two mounting holes are provided on the buckle.

[0007] In some embodiments, an introduction groove vertically provided on the end face of the outer end of the mounting hole and penetrating the bottom of the mounting part is provided, and the introduction groove is communicated with the mounting hole; an inclined introduction slope is provided on the end face of the rotating shaft.

[0008] In some embodiments, the groove extends along the height direction of the box body and penetrates the bottom of the box body, and the free end of the buckle extends downward along the length direction of the groove to the bottom of the box body.

[0009] In some embodiments, the clamping plate is arranged in the groove in the middle of the box body.

[0010] In some embodiments, a clamping platform extending downward is provided on the outer edge of the clamping plate, and two clamping blocks mating with the clamping platform are provided on the inner side wall of each buckle.

[0011] In some embodiments, a concave notch is provided at the bottom of each buckle.

[0012] In some embodiments, an exhaust hole communicating with the inside of the box body is provided on the cover body.

[0013] In some embodiments, the box body includes an outer shell and an inner container hermetically connected in the outer shell, and a plurality of independent accommodating cavities are provided in the inner container.

[0014] In some embodiments, two concentric convex walls are provided on the inner wall of the box cover along the circumference, and a sealing groove for inserting the top of the box body is formed between the two convex walls. An annular sealing body is connected in the sealing groove, and the bottom of the convex wall outside the sealing groove is lower than the bottom of the convex wall inside the sealing groove.

[0015] In summary, compared with the prior art, the lunch box of the present application has the following advantages: The lid of the lunch box is integrally formed by secondary injection molding of multiple mounting parts and a lid body, and a mounting position for snap connection is formed between two adjacent mounting parts; therefore, the thickness and mechanical strength of the mounting parts can be set relatively high. When the snap is rotatably connected to two adjacent mounting parts, the connection strength of the snap and the stability of the connection between the snap and the lid can be ensured; furthermore, since the mechanical strength of the mounting parts can be set relatively high, the overall mechanical strength of the lid is improved; the mounting parts are made of transparent materials. Therefore, part of the box body is set to be transparent. Coupled with the secondary injection molding of the mounting parts and the lid body, the lunch box has at least two colors, thus improving the recognition and aesthetics of the lunch box and attracting the attention of consumers; in addition, when the lid is connected to the box body, the snap is accommodated in the groove of the box body and the outer side wall of the snap is flush with the outer side wall of the box body, avoiding the snap protruding from the surface of the box body, making the snap a hidden design, thus making the overall structure of the lunch box more compact, avoiding the snap being damaged by collision, and having high use safety. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a lunch box of the present application.

[0017] Figure 2 is a schematic diagram of the bottom structure of a lunch box of the present application.

[0018] Figure 3 is a schematic diagram of the assembled structure of a lunch box of the present application.

[0019] Figure 4 is a schematic structural diagram of the lid of a lunch box of the present application.

[0020] Figure 5 is a schematic diagram of the snap connection structure of the lid of a lunch box of the present application.

[0021] Figure 6 is a schematic structural diagram of the box body of a lunch box of the present application.

[0022] Figure 7 is a schematic structural diagram of another embodiment of a lunch box of the present application.

[0023] Figure 8 is a schematic diagram of the bottom structure of another embodiment of a lunch box of the present application.

[0024] Description of the Reference Numerals

[0025] 1. Lid, 100. Mounting member, 101. Cover body, 102. Vent hole, 103. Mounting position, 104. Mounting hole, 105. Introduction groove, 2. Box body, 200. Groove, 201. Cardboard, 202. Card table, 203. Outer shell, 204. Inner liner, 3. Buckle, 300. Rotating shaft, 301. Notch, 302. Card block, 303. Introduction slope. Detailed implementation mode

[0026] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] In the description of the embodiments of the application, it should be understood that the orientation or positional relationships indicated by the terms "horizontal", "longitudinal", "width", "thickness", "upper", "lower", "front", "rear", "vertical", "top", "bottom", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present application.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

[0029] In the present application, unless otherwise clearly specified and limited, the terms "mount", "connect", "fix", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0030] See Figures 1 to 6 As shown; the embodiment of the present application discloses a lunch box, which is used for heat preservation of food materials and serving meals, etc. Its structure includes a lid 1 and a box body 2. The lid 1 includes a cover body 101 and a plurality of transparent mounting members 100 spaced circumferentially along the cover body 101, and the plurality of mounting members 100 and the cover body 101 are integrally formed by secondary injection molding; in the embodiment of the present application, in the production of the lid 1, a plurality of transparent mounting members 100 are first made with a mold, and then the mounting members 100 are placed one by one in the injection mold of the lid 1, and the cover body 101 of the lid 1 is formed by injection molding, so that the cover body 101 and the plurality of mounting members 100 are integrally formed to form an integral lid 1.

[0031] Further, in the present embodiment, an installation position 103 is formed between two adjacent mounting members 100. A buckle 3 is rotatably connected in each installation position 103. Two coaxial installation holes 104 are provided on two opposite inner side walls of two adjacent mounting members 100. Two rotating shafts 300 rotatably connected in the two installation holes 104 are provided on the buckle 3.

[0032] Exemplarily, referring to Figure 1 、 Figure 3 and Figure 4 As shown, in the present embodiment, the box cover 1 and the box body 2 are cylindrical, and there are four mounting members 100 of the box cover 1 which are evenly distributed along the circumferential direction of the box cover 1; in order to reduce the weight of the box cover 1, the interiors of the four mounting members 100 are all hollow.

[0033] In other embodiments, the number of the mounting members 100 may also be two, three, five, etc., and can be specifically set according to the actual product or user needs.

[0034] It is not difficult to understand that the box cover 1 of the lunch box is integrally formed by secondary injection molding of a plurality of mounting members 100 and a cover body 101, and an installation position 103 for connecting the buckle 3 is formed between two adjacent mounting members 100; therefore, the thickness and mechanical strength of the mounting member 100 can be set to be relatively high. When the buckle 3 is rotatably connected to two adjacent mounting members 100, the connection strength of the buckle 3 and the stability of the connection between the buckle 3 and the box cover 1 can be ensured; furthermore, since the mechanical strength of the mounting member 100 can be set to be relatively high, the overall mechanical strength of the box cover 1 is improved; the mounting member 100 is a mounting member 100 made of a transparent material. Therefore, a part of the box body 2 is provided to be transparent. Coupled with the secondary injection molding of the mounting member 100 and the cover body 101, the lunch box at least includes two colors, thereby improving the recognition and aesthetics of the lunch box and attracting the attention of consumers.

[0035] In the present embodiment, the buckle 3 and the box cover 1 are assembled, that is, the rotating shaft 300 on the buckle 3 can be rotatably connected in two coaxial installation holes 104 of two mounting members 100 in the installation position 103; in order to facilitate the installation of the buckle 3 and make the installation of the buckle 3 adapt to an automated assembly device to improve the assembly efficiency of the buckle 3; referring to Figure 4 and Figure 5 As shown, a guiding groove 105 vertically provided on the end surface of the outer end of the installation hole 104 and penetrating through the bottom of the mounting member 100 at the lower end is provided, and the guiding groove 105 is communicated with the installation hole 104; an inclined guiding slope 303 is provided on the end surface of the rotating shaft 300. The guiding slope 303 facilitates the clamping of the rotating shaft 300 into the installation hole 104, and the setting of the guiding groove 105 also facilitates the quick clamping of the rotating shaft 300 into the installation hole 104, so that the assembly of the buckle 3 can adapt to an automated assembly line device.

[0036] Further in this embodiment, refer to Figure 3 and Figure 6 As shown, the box body 2 includes an outer shell 203 and an inner container 204 hermetically connected inside the outer shell 203. There is a heat insulation gap between the outer shell 203 and the inner container 204, and a plurality of independent accommodating cavities are provided inside the inner container 204. The box cover 1 is covered on the top of the box body 2, and an exhaust hole 102 communicating with the inside of the box body 2 is provided on the box cover 1. The exhaust hole 102 can discharge the hot air inside the box body 2, so as to facilitate the opening of the box cover 1.

[0037] In this embodiment, in order to make the sealing performance between the box cover 1 and the box body 2 better, two concentric convex walls are provided along the circumferential direction on the inner wall of the box cover 1, and a sealing groove for inserting the top of the box body 2 is formed between the two convex walls. An annular sealing body is connected in the sealing groove, and the bottom of the convex wall outside the sealing groove is lower than the bottom of the convex wall inside the sealing groove. When the box cover 1 is covered on the top of the box body 2, the top of the box body 2 is accommodated in the sealing groove and is hermetically attached to the annular sealing body in the sealing groove, so as to seal between the box cover 1 and the box body 2. Further in this embodiment, the bottom of the convex wall outside the sealing groove is lower than the bottom of the convex wall inside the sealing groove, that is, the convex wall outside the sealing groove extends downward beyond the bottom of the convex wall inside the sealing groove, so that the outer edge of the top of the box body 2 abuts against the side wall of the convex wall outside the sealing groove, further improving the sealing performance between the box cover 1 and the box body 2.

[0038] Further in this embodiment, refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a plurality of grooves 200 corresponding to the buckles 3 are provided along the circumferential direction on the outer side wall of the box body 2, and a horizontally arranged clamping plate 201 is connected in the grooves 200; the buckles 3 are clamped on the clamping plate 201, and the outer side wall of the buckles 3 is flush with the outer side wall of the box body 2. That is, in this embodiment, when the box cover 1 and the box body 2 are in a connected state, the buckles 3 are accommodated in the grooves 200 of the box body 2 and the outer side wall of the buckles 3 is flush with the outer side wall of the box body 2, so as to prevent the buckles 3 from protruding from the surface of the box body 2, making the buckles 3 in a hidden design, thereby making the overall structure of the lunch box more compact, preventing the buckles 3 from being damaged by collision, and having high use safety.

[0039] Exemplarily, refer to Figure 5 As shown, a clamping platform 202 extending downward is provided at the outer edge of the clamping plate 201, and two clamping blocks 302 mating with the clamping platform 202 are provided on the inner side wall of each buckle 3. When the buckle 3 is clamped in the groove 200 of the box body 2, the two clamping blocks 302 on the buckle 3 are elastically clamped on the clamping platform 202 of the clamping plate 201, and the clamping cooperation between the clamping platform 202 and the two clamping blocks 302 makes the clamping between the buckle 3 and the clamping plate 201 more firm and stable.

[0040] Further, in the above embodiments, in order to facilitate the opening of the buckle 3 and to make the side wall of the lunch box smoother and more integral, the groove 200 is arranged to extend along the height direction of the box body 2 and penetrate through the bottom of the box body 2, and the free end of the buckle 3 extends downward along the length direction of the groove 200 to the bottom of the box body 2. That is to say, in this embodiment, the free end of the buckle 3 extends downward to the bottom of the box body 2, which facilitates the opening of the buckle 3, and the outer side wall of the buckle 3 forms the outer peripheral wall of the lunch box, making the integrity of the lunch box stronger and the structure more compact.

[0041] In order to improve the clamping stability between the buckle 3 and the box body 2, the clamping plate 201 is arranged in the groove 200 in the middle of the box body 2. This avoids setting the clamping plate 201 at a position near the upper opening of the box body 2, thereby avoiding the defect of poor sealing between the box cover 1 and the box body 2 caused by the low strength, easy deformation and poor extrusion resistance of the mouth of the box body 2. Thus, the connection stability between the box cover 1 and the box body 2 is good and the sealing effect is good.

[0042] To further facilitate the opening of the buckle 3, as shown in Figure 5 In the bottom of each buckle 3, there is a concave notch 301, which can facilitate the insertion of the user's finger, so that the opening operation of the buckle 3 is simpler, more convenient and labor-saving.

[0043] As shown in Figure 7 and Figure 8 Shown is the structure of the lunch box according to another embodiment of the present application. In this embodiment, the lunch box is set as a square structure, that is, both the box cover 1 and the box body 2 are set as rectangular structures. The four mounting parts 100 on the box cover 1 are respectively located at the four corners of the top of the box cover 1, and the lengths of the two buckles 3 located in the length direction of the box cover 1 are longer than the lengths of the two buckles 3 located in the width direction of the box cover 1. For the other structures of the lunch box in this embodiment, refer to the structure of the lunch box in the above embodiments, and no repetitive description will be made in this embodiment.

[0044] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A lunch box, characterized in that: It includes a box cover and a box body. The box cover includes a cover body and a plurality of transparent mounting members that are circumferentially spaced apart along the cover body. The plurality of mounting members and the cover body are integrally formed by secondary injection molding. An installation position is formed between two adjacent mounting members, and a buckle is rotatably connected in each installation position. A plurality of grooves corresponding to the buckles are provided along the circumferential direction on the outer side wall of the box body, and a clamping plate is connected in the grooves. The buckle is clamped on the clamping plate, and the outer side wall of the buckle is flush with the outer side wall of the box body.

2. The lunch box according to claim 1, wherein: Two coaxial mounting holes are provided on the two opposite inner side walls of two adjacent mounting members, and two rotating shafts rotatably connected in the two mounting holes are provided on the buckle.

3. The lunch box according to claim 2, characterized in that: An introduction groove vertically provided on the end surface at the outer end of the mounting hole and penetrating the bottom of the mounting member at the lower end is provided, and the introduction groove is communicated with the mounting hole. An inclined introduction slope is provided on the end surface of the rotating shaft.

4. The lunch box according to claim 1, wherein: The groove extends along the height direction of the box body and penetrates the bottom of the box body, and the free end of the buckle extends downward along the length direction of the groove to the bottom of the box body.

5. The lunch box according to claim 4, characterized in that: The clamping plate is arranged in the groove in the middle of the box body.

6. The lunch box according to claim 5, characterized in that: A clamping platform extending downward is provided on the outer edge of the clamping plate, and two clamping blocks that are matched and clamped with the clamping platform are provided on the inner side wall of each buckle.

7. The lunch box according to claim 6, wherein: A concave notch is provided at the bottom of each buckle.

8. The lunch box according to claim 1, characterized in that: An exhaust hole communicating with the inside of the box body is provided on the cover body.

9. The lunch box according to claim 1, characterized in that: The box body includes an outer shell and an inner container hermetically connected in the outer shell, and a plurality of independent accommodating cavities are provided in the inner container.

10. The lunch box according to claim 1, characterized in that: Two concentric convex walls are provided along the circumferential direction on the inner wall of the box cover, and a sealing groove for inserting the top of the box body is formed between the two convex walls. An annular sealing body is connected in the sealing groove, and the bottom of the convex wall outside the sealing groove is lower than the bottom of the convex wall inside the sealing groove.

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