Heating lunch box

Abstract

The present invention discloses a heating lunch box, wherein the heating lunch box includes a lid and a base box. The lid includes a lid body and a first flange, the first flange being connected to the periphery of the lid body and having a first rolled abutment on a side away from the lid body; the base box includes a box body and a second flange, the second flange being connected to the periphery of the box body and having a second rolled abutment on a side away from the box body. The second flange is provided with a mounting groove adapted to fit the first rolled abutment; when the first rolled abutment is engaged in the mounting groove, the first rolled abutment abuts the second rolled abutment. The technical solution of the present invention can improve the connection tightness of the heating lunch box.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking utensils, and in particular to a heating lunch box. Background Art

[0002] The existing lunch box design has defects. During the heating process and transportation, the pressure inside the heating lunch box increases due to heating food and vibration during transportation, which causes the lid to easily loosen from the base box, causing the lid to fall off and become dirty, and the moisture in the food in the lunch box to evaporate excessively, resulting in a decrease in the taste of the ingredients after heating. Summary of the Invention

[0003] The main purpose of the present invention is to provide a heating lunch box, aiming to improve the connection tightness of the heating lunch box.

[0004] To achieve the above-mentioned purpose, the present invention provides a heating lunch box, comprising:

[0005] The box cover comprises a cover body and a first flange, wherein the first flange is connected to the periphery of the cover body and a first rolling portion is provided on a side away from the cover body;

[0006] The bottom box comprises a box body and a second flange, wherein the second flange is connected to the periphery of the box body and is provided with a second roll-on portion on a side away from the box body, and the second flange is provided with a mounting groove adapted to fit the first roll-on portion;

[0007] When the first rolling portion is inserted into the installation slot, the first rolling portion abuts against the second rolling portion.

[0008] Optionally, a buckling portion is provided on the second rolling portion, and the buckling portion is used to press the first rolling portion.

[0009] Optionally, a plurality of the buckling portions are provided, and the plurality of the buckling portions are arranged at intervals along the second rolling portion.

[0010] Optionally, the buckling portion is a convex structure formed by a portion of the second rolled abutment portion being arched toward the box body.

[0011] Optionally, one of the first flange and the second flange is provided with a sealing protrusion, and the other is provided with a sealing recess, wherein the sealing protrusion and the sealing recess extend obliquely toward the inner side or the outer side of the heating lunch box, and when the first rolled portion is inserted into the mounting groove, the sealing protrusion is inserted into the sealing recess.

[0012] Optionally, the sealing protrusion is formed with two oppositely arranged first friction contact surfaces, and the sealing concave portion is formed with two oppositely arranged second friction contact surfaces, the first friction contact surface and the second friction contact surface both extend obliquely toward the inner side or the outer side of the heating lunch box, and the first friction contact surface and the second friction contact surface are tightly fitted.

[0013] Optionally, the box body includes a box side wall, the cover body includes a cover side wall, and both the box side wall and the cover side wall are formed with a spoiler structure.

[0014] Optionally, the box body further includes a box bottom wall, and the cover body further includes a cover bottom wall, and reinforcing ribs are formed on both the box bottom wall and the cover bottom wall.

[0015] Optionally, a breathable structure is provided on at least one of the cover body and the box body, and the breathable structure is used to release the expanded gas when the pressure of the gas in the heated lunch box reaches a preset value due to expansion caused by heat.

[0016] Optionally, the heating lunch box further includes a covering film wrapped around the lid and the bottom box.

[0017] The technical solution of the present invention is to provide a first rolled-up portion on the box lid, a second rolled-up portion on the bottom box, and a mounting groove on the bottom box that is adapted to the first rolled-up portion. In this way, when the first rolled-up portion is inserted into the mounting groove, the first rolled-up portion will abut against the second rolled-up portion, which can increase the contact area between the box lid and the bottom box, and the second rolled-up portion applies force to the first rolled-up portion, which is beneficial to enhancing the connection tightness and sealing firmness between the box lid and the bottom box. In this way, the box lid is not easy to loosen during heating, use and movement of the heating lunch box, thereby improving the sealing and connection tightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of a heating lunch box of the present invention;

[0020] Figure 2 for Figure 1 A cross-sectional view of a medium heating lunch box;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0023] Figure 5 for Figure 1 Schematic diagram of the decomposition structure of the structure in .

[0024] Description of Figure Numbers:

[0025] Label name Label name 10 Heating lunch box 301 Box body 20 Lid 301a Box side wall 201 Cover body 301b box bottom wall 201a Cover side wall 302 Second flange 201b Cover bottom wall 303 Volume 2 202 First Flanging 304 Buckle 203 Volume 1 305 Mounting slot 204 sealing convex part 306 Seal recess 205 First friction contact surface 307 Second friction contact surface 206 Breathable structure 401 spoiler structure 30 bottom box 402 reinforcement

[0026] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0029] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] The present invention provides a heating lunch box 10 .

[0031] Reference Figures 1 to 5The bottom box 30 comprises a box body 301 and a second flange 302. The second flange 302 is connected to the periphery of the box body 301 and is provided with a first rolling portion 203 on the side away from the cover body 201. The bottom box 30 comprises a box body 301 and a second flange 302. The second flange 302 is connected to the periphery of the box body 301 and is provided with a second rolling portion 303 on the side away from the box body 301. The second flange 302 is provided with a mounting groove 305 adapted to the first rolling portion 203. When the first rolling portion 203 is inserted into the mounting groove 305, the first rolling portion 203 and the second rolling portion 303 are abutted to form a receiving cavity with good connection tightness. In this way, placing food in the receiving cavity can prevent food from overflowing and lock moisture, thereby improving the taste of food.

[0032] Specifically, please refer to Figure 3 and Figure 5 The second rolling portion 303 is provided with a buckling portion 304 , and the buckling portion 304 is used to press the first rolling portion 203 . When the lid 20 is unlocked, the locking cam 303 is unlocked and the locking cam 304 is in a state of being unlocked, so that the locking cam 303 can be unlocked when the lid 20 is unlocked. The phenomenon of loosening and the phenomenon of the lid 20 loosening caused by the increase in pressure in the lunch box during the heating process can be understood. During the heating process, the gas in the heating lunch box 10 expands due to heat, resulting in an increase in pressure, and the lid 20 and the bottom box 30 are deformed, and the first rolled abutment 203 and the second rolled abutment 303 are deformed, so that the second rolled abutment 303 is more tightly fastened to the first rolled abutment 203, that is, the line connecting the two circle centers and the axial direction of the heating lunch box 10 are set at an acute angle. As the deformation occurs, the acute angle becomes smaller, so that the second rolled abutment 303 is tightly fastened to the first rolled abutment 203, thereby improving the tightness of the connection between the lid 20 and the bottom box 30; during the movement, force is applied to the second rolled abutment 303 due to the action on the second flange 302, and then the second rolled abutment 303 is further fastened to the first rolled abutment 203, thereby improving the tightness of the connection between the lid 20 and the bottom box 30. By such arrangement, the first rolling portion 203 and the second rolling portion 303 press against each other to ensure that the box cover 20 can be connected to the bottom box 30 more firmly.

[0033] Furthermore, there are multiple snap-fitting parts 304, and the multiple snap-fitting parts 304 are arranged at intervals along the second rolled part 303, that is, the second rolled part 303 is intermittently arched to form multiple convex structures, and then are all located obliquely above the first rolled part 203 and evenly press the first rolled part 203. The first rolled part 203 is evenly stressed and the contact area with the second rolled part 303 is increased, thereby improving the connection strength between the box cover 20 and the bottom box 30.

[0034] The technical solution of the present invention is to provide a first rolling abutment portion 203 on the box cover 20, a second rolling abutment portion 303 on the bottom box 30, and a mounting groove 305 adapted to the first rolling abutment portion 203 on the bottom box 30. In this way, when the first rolling abutment portion 203 is inserted into the mounting groove 305, the first rolling abutment portion 203 abuts against the second rolling abutment portion 303, which can increase the contact area between the box cover 20 and the bottom box 30, and the second rolling abutment portion 303 applies force to the first rolling abutment portion 203, which is conducive to enhancing the connection tightness and sealing firmness between the box cover 20 and the bottom box 30. In this way, during the heating use and movement of the heating lunch box 10, the box cover 20 is not easy to loosen, thereby improving the sealing and connection tightness.

[0035] Further, if Figures 2 to 4 As shown, one of the first flange 202 and the second flange 302 is provided with a sealing protrusion 204, and the other is provided with a sealing recess 306. The sealing protrusion 204 and the sealing recess 306 extend obliquely toward the inside or outside of the heating container 10. When the first roll-up portion 203 is engaged with the mounting groove 305, the sealing protrusion 204 is engaged with the sealing recess 306, forming a double seal and improving the sealing performance of the heating container 10. The positions of the sealing protrusion 204 and the sealing recess 306 on the first flange 202 and the second flange 302 are interchangeable. That is, the provision of the sealing protrusion 204 and the sealing recess 306 can prevent liquid and moisture in the accommodating cavity from flowing out of the accommodating cavity smoothly, thereby increasing the connection area. In addition, the first roll-up portion 203 is engaged with the mounting groove 305, which can further effectively prevent the liquid and moisture in the accommodating cavity from flowing out of the accommodating cavity and increase the connection area. The first roll-up portion 203 is engaged with the mounting groove 305, which can further effectively prevent the liquid and moisture in the accommodating cavity from flowing out of the accommodating cavity and increase the fastening strength by pressing against the second roll-up portion 303, thereby greatly improving the sealing performance and connection tightness of the heating container 10.

[0036] Specifically, if Figure 3 and Figure 4As shown, the sealing convex portion 204 is formed with two first friction contact surfaces 205 arranged opposite to each other, and the sealing concave portion 306 is formed with two second friction contact surfaces 307 arranged opposite to each other. The first friction contact surface 205 and the second friction contact surface 307 are both inclined to extend toward the inside or outside of the heating lunch box 10, and the first friction contact surface 205 and the second friction contact surface 307 are tightly matched, that is, the sealing convex portion 204 and the sealing concave portion 306 are inclined to extend toward the inside or outside of the heating lunch box 10. It can be understood that the first friction contact surface 205 and the second friction contact surface The surface 307 is set at an angle to the axial direction of the heating lunch box 10. In some preferred embodiments, the first friction contact surface 205 and the second friction contact surface 307 are set at an acute angle to the axial direction of the heating lunch box 10. The angle can be, for example, 30 degrees, 45 degrees, 60 degrees, etc. With such a setting, because the direction of movement of the box cover 20 during the opening process is the axial direction of the bottom box 30, the first friction contact surface 205 and the second friction contact surface 307 will generate mutual friction due to obstruction. The friction force can ensure that the box cover 20 can be relatively firmly connected to the bottom box 30. In addition, in the embodiment shown in the figure, the rib structure and the groove structure are stamped and formed by the original structure of the first flange 202 and the second flange 302, so that the overall structure uses less material and has a lower cost. Of course, in other embodiments, the rib structure and the groove structure can also be made by adding other materials.

[0037] In addition, during the heating or moving process, the second rolled abutment portion 303 applies force to the first rolled abutment portion 203, so that the acute angle formed by the line between the first rolled abutment portion 203 and the second rolled abutment portion 303 and the axial direction of the heating lunch box 10 gradually becomes smaller. Combined with the acute angle formed by the first friction contact surface 205 and the second friction contact surface 307 and the axial direction of the heating lunch box 10, that is, the line between the first rolled abutment portion 203 and the second rolled abutment portion 303, the first friction contact surface 205 and the second friction contact surface 307 are all set at an acute angle to the axial direction of the heating lunch box 10. When the first flange 202 and the second flange 302 are deformed, a mutually restrained structure can be formed between the first rolled abutment portion 203, the second rolled abutment portion 303, the sealing protrusion 204 and the sealing recess 306, thereby greatly improving the sealing and connection tightness of the heating lunch box 10.

[0038] Reference Figure 1 、 Figure 2 and Figure 5 The box body 301 includes a box side wall 301a, and the cover body 201 includes a cover side wall 201a. A spoiler structure 401 is formed on both the box side wall 301a and the cover side wall 201a.

[0039] The box body 301 of the present invention is made of a material that is resistant to high temperatures and has good thermal conductivity. In one embodiment, the box body 301 can be made of aluminum foil and can be produced by stamping. Of course, the box body 301 can also be made of other metal foil materials that are resistant to high temperatures and have good thermal conductivity. Alternatively, with the development of technology, some non-metallic materials that can also meet the requirements of high temperature resistance and good thermal conductivity are also suitable for the solution of this application. This application does not limit this. Similarly, the cover body 201 is similar to the box body 301 and its material can be the same as or different from that of the box body 301. This is also not limited by the present invention.

[0040] Specifically, the box body 301 includes a box sidewall 301a, and the lid body 201 includes a lid sidewall 201a. Both the box sidewall 301a and the lid sidewall 201a are formed with a spoiler structure 401. Specifically, the box sidewall 301a and the lid sidewall 201a are arched toward the accommodating cavity of the heated lunch box 10 to form a convex structure. The length of the convex structure can be adjusted accordingly based on the box body 301 and the lid body 201, for example, the length is half the axial length of the lid body 201. The spoiler structure 401 can increase the heating area, allowing the food to be heated more evenly and improving the taste of the food. Multiple spoiler structures 401 can be provided, and multiple spoiler structures 401 can be arranged circumferentially along the sidewalls to ensure that food at all locations within the heated lunch box 10 can be heated evenly.

[0041] Furthermore, the box body 301 also includes a box bottom wall 301b, and the cover body 201 also includes a cover bottom wall 201b. Reinforcing ribs 402 are formed on the box bottom wall 301b and the cover bottom wall 201b. Multiple reinforcing ribs 402 are formed on the box bottom wall 301b and the cover bottom wall 201b, which are convenient for strengthening the structural strength of the box cover 20 and the bottom box 30, preventing deformation caused by collision during movement, and facilitating the placement and support of food.

[0042] Reference Figure 1 and Figure 5In one embodiment, a breathable structure 206 is provided on at least one of the cover body 201 and the box body 301. The breathable structure 206 is used to release the expanded gas when the gas in the heated lunch box 10 expands due to heat and the pressure reaches a preset value. It can be understood that the breathable structure 206 is only provided on the cover body 201, or the breathable structure 206 is only provided on the box body 301, or both the cover body 201 and the box body 301 are provided with the breathable structure 206. The breathable structure 206 is used to adjust the pressure in the heated lunch box 10 to improve the safety of the heated lunch box 10. The vent structure 206 can be a vent hole, and a plurality of vent holes can be arranged along the width of the box body 301 and / or the lid body 201 to prevent excessive gas from accumulating in the accommodating cavity. In another embodiment, the vent structure 206 is a vent hole formed in the lid body 201 and a vent film connected to the lid body 201 and covering the vent hole, and the vent film can open the vent hole under the impact of the expanding gas. In another embodiment, the vent structure 206 is a pressure relief valve assembly, which is installed on the lid body 201 or the box body 301. When the gas pressure in the accommodating cavity exceeds a certain range, the pressure relief valve assembly can automatically relieve the pressure. By providing the vent structure 206, it is possible to effectively prevent the gas in the heated lunch box 10 from expanding due to heat during the heating process, resulting in excessive pressure, which may cause the lid 20 to explode or the heated lunch box 10 to deform excessively, thereby improving the safety of the heated lunch box 10.

[0043] In one embodiment, the heating lunch box 10 also includes a covering film (not shown) wrapped around the outside of the box lid 20 and the bottom box 30, wherein the covering film can be a plastic film structure, and the box lid 20 and the bottom box 30 are fixed together by the covering film, which facilitates the transportation of the heating lunch box 10 and further ensures that the food will not be spilled during the transportation of the food.

[0044] The above descriptions are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present description and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A heating lunch box, characterized in that: include The box cover comprises a cover body and a first flange, wherein the first flange is connected to the periphery of the cover body and a first rolling portion is provided on a side away from the cover body; The bottom box includes a box body and a second flange, wherein the second flange is connected to the periphery of the box body and is provided with a second rolled abutment portion on a side away from the box body, the second flange is provided with a mounting groove adapted to fit the first rolled abutment portion, and the second rolled abutment portion is provided with a buckling portion, the buckling portion being used to press against the first rolled abutment portion; When the first rolling portion is inserted into the mounting groove, the upper oblique portion of the first rolling portion abuts against the buckling portion; One of the first flange and the second flange is provided with a sealing protrusion, and the other is provided with a sealing recess, wherein the sealing protrusion and the sealing recess extend obliquely toward the inner side or the outer side of the heating lunch box, and when the first rolled portion is inserted into the mounting groove, the sealing protrusion is inserted into the sealing recess.

2. The heating lunch box according to claim 1, wherein: There are multiple buckling parts, and the multiple buckling parts are arranged at intervals along the second rolling part.

3. The heating lunch box according to claim 1, wherein: The buckling portion is a convex structure formed by a portion of the second rolling portion being arched toward the box body.

4. The heating lunch box according to claim 1, wherein: The sealing convex portion is formed with two oppositely arranged first friction contact surfaces, and the sealing concave portion is formed with two oppositely arranged second friction contact surfaces. The first friction contact surface and the second friction contact surface both extend obliquely toward the inner side or the outer side of the heating lunch box, and the first friction contact surface and the second friction contact surface are tightly fitted.

5. The heating lunch box according to claim 1, wherein: The box body includes a box side wall, the cover body includes a cover side wall, and both the box side wall and the cover side wall are formed with a flow-turbulating structure.

6. The heating lunch box according to claim 5, characterized in that: The box body further includes a box bottom wall, and the cover body further includes a cover bottom wall. Both the box bottom wall and the cover bottom wall are formed with reinforcing ribs.

7. The heating lunch box according to claim 1, wherein: At least one of the cover body and the box body is provided with a breathable structure, and the breathable structure is used to release the expanded gas when the gas in the heated lunch box expands due to heat and the pressure reaches a preset value.

8. The heating lunch box according to claim 1, wherein: The heating lunch box further comprises a covering film wrapped around the box cover and the bottom box.

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