No-wash lunch boxes

Abstract

This utility model discloses a self-cleaning lunch box, including an outer box, an outer lid, an inner box, an inner lid, and a sealing ring. The outer box has an upward-facing receiving cavity, in which the inner box and the inner lid are located. The inner lid also covers the inner box from above. The outer lid covers the outer box from above and covers the cavity. The outer lid protrudes downward and has an annular sidewall arranged along the periphery of the inner lid. The annular sidewall presses against the periphery of the inner lid from above. An annular insert groove is also formed on the annular sidewall and arranged circumferentially along the annular sidewall. The sealing ring includes an annular insert portion fixedly embedded in the annular insert groove and an annular upright portion bent out from the end of the annular insert portion. The annular upright portion seals against the sidewall of the outer box. This self-cleaning lunch box has the advantages of being self-cleaning and easy to use, preventing spills or even burns to users during thermal expansion and contraction or transportation.

Description

Technical Field

[0001] This utility model relates to a lunch box, and more particularly to a non-washable lunch box. Background Technology

[0002] In people's daily lives and work, lunch boxes are ubiquitous, including disposable and reusable ones. Since disposable lunch boxes are discarded after use, users are spared the task of washing them, but consequently, the cost of use is higher; while reusable lunch boxes can be used repeatedly after washing, and consequently, the cost of use is lower.

[0003] For existing disposable lunch boxes, since the lid and box are only connected by a lid-and-box mechanism, there is a risk of spillage or even burns to users during thermal expansion and contraction or transportation. Similarly, for reusable lunch boxes, although a sealing gasket is sandwiched between the ends of the lid and box to prevent spillage or burns during thermal expansion and contraction or transportation, the connection between the lid and box relies on an inverted buckle on the periphery of the lid, making the connection relatively inconvenient.

[0004] Therefore, there is an urgent need for a self-cleaning lunchbox that is easy to use and requires no cleaning to prevent spills or even burns to users during thermal expansion and contraction or transportation. Utility Model Content

[0005] The purpose of this invention is to provide a self-cleaning lunch box that is easy to use and requires no cleaning, preventing spills or even burns to users during thermal expansion and contraction or transportation.

[0006] To achieve the above objectives, the present invention provides a self-cleaning lunchbox comprising an outer box, an outer lid, a sealing ring, and a disposable inner box and inner lid. The outer box has an upward-facing receiving cavity, within which the inner box and inner lid are located. The inner lid also covers the inner box from above. The outer lid covers the outer box from above and conceals the receiving cavity. The outer lid protrudes downward and has an annular sidewall arranged along the periphery of the inner lid. This annular sidewall presses against the periphery of the inner lid from above. An annular insert groove is also formed on the annular sidewall, facing the sidewall of the outer box and arranged circumferentially along this sidewall. The sealing ring is fitted over the annular sidewall and includes an annular insert portion fixedly embedded in the annular insert groove and an annular raised portion bent from the end of the annular insert portion. The annular raised portion seals against the sidewall of the outer box.

[0007] Compared to existing technologies, the design of "an annular sidewalls that protrude downwards from the outer cover and are arranged along the periphery of the inner cover, with the annular sidewalls pressing against the periphery of the inner cover from above" ensures that the inner box and inner cover inside the outer box are constantly pressed and held together by the annular sidewalls of the outer cover and the outer box, preventing deformation and displacement of the inner box. Furthermore, "annular insert grooves are also provided on the annular sidewalls facing the sidewalls of the outer box and arranged circumferentially along the annular sidewalls, and the sealing ring is sleeved on the annular sidewalls and includes an annular insert portion fixedly embedded in the annular insert groove and a bend at the end of the annular insert portion." The design of the folded-out annular raised section, which seals against the side wall of the outer box, serves two purposes. First, it prevents food in the inner box from leaking into the outer box through the joint between the inner box and the inner lid due to thermal expansion and contraction or during transportation, thus preventing spillage and potential burns to the user. Second, it facilitates the closing and closing of the outer lid and outer box. This is because the outer lid and outer box are secured by the tension fit between the side wall of the outer box and the annular raised section of the sealing ring fitted onto the annular side wall, allowing for easy assembly and disassembly via a simple plugging and unplugging operation. Furthermore, since the food is contained within the structure formed by the inner box and inner lid, replacing the inner box and inner lid eliminates the need to clean the outer box, outer lid, and sealing ring.

[0008] Preferably, the annular upright portion is located above the annular insert portion, and there is a clearance between the upper end of the annular upright portion and the annular sidewall, which allows the sidewall of the outer box to push the upper end of the annular upright portion to deform closer to the annular sidewall to provide clearance.

[0009] Preferably, the annular raised portion is also arranged separately from the bottom end face of the outer cover.

[0010] Preferably, the outer cover is further provided with a support structure located inside the annular sidewall and used for clearance fitting with the inner cover, and the support structure is provided with an insertion structure for inserting a handheld tool flat.

[0011] Preferably, the insert structures are respectively arranged on opposite sides of the supporting structure.

[0012] Preferably, the supporting structure has through holes extending vertically, and a sealing ring for narrowing the through holes is fitted on the supporting structure to define the position of the through holes. The outer cover is fitted with an operating element that can insert the sealing ring downwards or pull it out upwards.

[0013] Preferably, the outer cover is provided with a first stacking part, and the bottom end of the outer box is provided with a second stacking part aligned with the upper and lower directions of the outer box; by means of the cooperation of the first stacking part and the second stacking part, one of the disposable lunch boxes can be stacked on top of another disposable lunch box.

[0014] Preferably, one of the first and second stacking portions is a groove structure and the other is a convex structure.

[0015] Preferably, the inner box has a pull-out structure on its periphery for an operator to remove the inner box together with the inner cover from the outer box.

[0016] Preferably, the pull-up structure is a pull ring structure.

[0017] Preferably, the pull-out structures are a plurality of structures spaced apart along the periphery of the inner box. The pull-out structures can be unfolded or folded relative to the inner box. The annular sidewall has a clearance notch at the position opposite the inner cover to allow the folded pull-out structures to pass.

[0018] Preferably, the outer box has a support platform on its side wall that supports the periphery of the inner box from below.

[0019] Preferably, the inner box has a groove channel for breaking the vacuum, and the groove channel is located on both the outer side wall and the outer bottom wall of the inner box.

[0020] Preferably, the groove channel includes a first portion located on the outer bottom wall and a second portion located on two adjacent outer side walls of the inner box. Attached Figure Description

[0021] Figure 1 This is a perspective view of the self-cleaning lunch box of this utility model.

[0022] Figure 2 yes Figure 1 The diagram shows a self-cleaning lunchbox viewed in the opposite direction of arrow A.

[0023] Figure 3 It is along Figure 2 Internal view of the section cut along the BB line.

[0024] Figure 4 yes Figure 3 Enlarged view of section C.

[0025] Figure 5 yes Figure 1 The diagram shown is an exploded 3D view of a self-cleaning lunchbox.

[0026] Figure 6 yes Figure 5 A further exploded 3D diagram.

[0027] Figure 7 yes Figure 6 An exploded view of the 3D structure from another angle.

[0028] Figure 8This is a perspective view of the outer lid, sealing ring, fork, and spoon assembled together in the self-cleaning lunch box of this utility model.

[0029] Figure 9 This is a perspective view of the inner box and inner lid of the self-cleaning lunch box of this utility model, with the lid and inner box fitting together.

[0030] Figure 10 This is a diagram showing two of the self-cleaning lunch boxes of this utility model stacked together. Detailed Implementation

[0031] To explain the technical content and structural features of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0032] Please see Figures 1 to 3 The present invention provides a self-cleaning lunch box 100, which includes an outer box 10, an outer cover 20, a sealing ring 50, and an inner box 30 and an inner cover 40 for single use. That is to say, the inner box 30 and the inner cover 40 are single-use components. Therefore, by replacing the inner box 30 and the inner cover 40 after use, the cleaning of the outer box 10, the outer cover 20 and the sealing ring 50 can be eliminated.

[0033] Combined Figures 5 to 6 The outer box 10 has a receiving cavity 11 with the opening 111 facing upwards; optionally, it is located in... Figure 6 In this example, the receiving cavity 11 is a square cavity to accommodate the square inner box 30 and inner cover 40. Obviously, depending on actual needs, the receiving cavity 11 can also be other shapes well-known in the art, such as, but not limited to, a circular cavity. When the receiving cavity 11 is a circular cavity, the inner box 30 and inner cover 40 can also be circular. Furthermore, the inner box 30 and inner cover 40 are each located within the receiving cavity 11. The inner cover 40 also covers the inner box 30 from above, while the outer cover 20 covers the outer box 10 from above and covers the cavity opening 11, as shown in the diagram. Figure 3 As shown.

[0034] Meanwhile, the outer cover 20 protrudes downward and has an annular sidewall 21 arranged along the periphery 41 of the inner cover 40. The annular sidewall 21 presses against the periphery 41 of the inner cover 40 from above, as shown in the figure. Figure 4 As shown; the annular sidewall 21 is also provided with an annular mounting groove 211 facing the sidewall 12 of the outer box 10 and arranged circumferentially along the annular sidewall 21.

[0035] The sealing ring 50 is sleeved on the annular sidewall 21. The sealing ring 50 also includes an annular insert portion 51 fixedly embedded in the annular insert groove 211 and an annular upright portion 52 bent out from the end of the annular insert portion 51. The annular upright portion 52 is in sealing contact with the sidewall 12 of the outer box 10, as shown in the figure. Figure 3 and Figure 4As shown; alternatively, at Figure 3 and Figure 4 In this example, the annular raised portion 52 is positioned above the annular fitting portion 51. A clearance gap 60 exists between the upper end 521 of the annular raised portion 52 and the annular sidewall 21, allowing the sidewall 12 of the outer box 10 to push the upper end 521 of the annular raised portion 52 towards the annular sidewall 21 for deformation. This clearance gap 60 provides a clearance position for the elastic deformation of the annular raised portion 52, and through the elastic deformation of the annular raised portion 52, the annular raised portion 52 can maintain a taut, abutting state against the sidewall 12 of the outer box 10. This improves the reliability of the seal and facilitates the assembly and disassembly of the outer cover 20 relative to the outer box 10. Furthermore, in... Figure 4 In this example, the annular raised portion 52 is also arranged separately from the bottom end face 22 of the outer cover 20, so that the upper end 521 of the annular raised portion 52 is not constrained by the bottom end face 22 of the outer cover 20, thereby improving the smoothness and ease of elastic deformation of the upper end 521 of the annular raised portion 52. More specifically, see the description below.

[0036] Combination Figure 3 , Figure 4 , Figure 7 and Figure 8 As an example, the outer cover 20 also has a support structure 23 located within the annular sidewall 21 and used for clearance fitting with the inner cover 40, to prevent the support structure 23 from exerting a downward pushing force on the inner cover 40 except for the periphery 41. The support structure 23 has an insertion structure 231 for the hand tool to be inserted flat. This design allows the hand tool to be stored in a sealed space to avoid contamination, and also isolates the hand tool from food to prevent oil or soup from adhering and affecting the user experience. It also facilitates the installation and removal of the hand tool from the outer cover 20. Specifically, in Figure 7 and Figure 8 In this example, the insert structures 231 are respectively arranged on opposite sides of the support structure 23 to meet the needs of inserting a fork 210 into one side of the support structure 231 and inserting a spoon 220 into the other side of the support structure 231; in addition, Figure 4As an example, the supporting structure 23 has through holes 232 extending vertically. A sealing ring 233 for narrowing the through holes 232 is mounted on the supporting structure 23 to define their positions. The outer cover 20 is equipped with an operating member 70 that can insert downwards or pull upwards out of the sealing ring 233. Therefore, opening and closing the through holes 232 via the operating member 70 facilitates the operation of the outer cover 20 being placed on or removed from the outer box 10. Alternatively, as an example, the operating member 70 is rotatably mounted on the outer cover 20. It should be noted that since the operating member 70 opens and closes the through holes 232 by inserting or pulling out the sealing ring 233, the operating member 70 has a sealing plug 71 for inserting and removing the sealing ring 233. Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown.

[0037] Combination Figure 1 , Figure 2 and Figures 5 to 7 As an example, the outer cover 20 is provided with a first stacking portion 24, and the bottom end 13 of the outer box 10 is provided with a second stacking portion 14 aligned vertically with the outer box 10; therefore, by means of the cooperation of the first stacking portion 24 and the second stacking portion 14, one of the self-cleaning lunch boxes 100 of this utility model can be stacked on top of another self-cleaning lunch box 100 of this utility model, as shown in the figure. Figure 10 As shown. Specifically, as an example, the first stacking portion 24 has a groove structure, and the second stacking portion 14 has a convex structure; obviously, depending on actual needs, the first stacking portion 24 can be a convex structure and the second stacking portion 14 can be a groove structure, so it is not considered... Figure 1 , Figure 2 and Figures 5 to 7 The above is a limited description; in addition, the groove structure is circular, and correspondingly, the convex structure is also circular, but this is not a limitation.

[0038] like Figure 5 and Figure 6 As shown, as an example, the periphery 35 of the inner box 30 is provided with a pull-out structure 34 for an operator to remove the inner box 30 together with the inner cover 40 from the outer box 10. Optionally, Figure 5 and Figure 6 In the example shown, the lifting structure 34 consists of three arranged at intervals along the perimeter 35 of the inner box 30. Obviously, depending on actual needs, the number of lifting structures 34 can also be one, two, or four, so it is not limited to one. Figure 5 and Figure 6As shown, the pull-out structure 34 can be unfolded or folded relative to the inner box 30; and the annular sidewall 21 has a clearance notch 2121 at position 212 opposite to the inner cover 40 to allow the folded pull-out structure 34 to pass, so as to avoid interference between the pull-out structure 34 and this position 212, thereby ensuring the reliability of this position 212 in the push-up state of the inner cover 40. Specifically, in Figure 5 and Figure 6 In this example, the pull structure 34 is a pull ring structure, but is not limited thereto.

[0039] like Figure 7 and Figure 9 As shown, as an example, the inner box 30 has a groove channel 31 for breaking the vacuum. The groove channel 31 is located on both the outer side wall 32 and the outer bottom wall 33 of the inner box 30. Therefore, the groove channel 31 helps to prevent a vacuum adsorption effect between the inner box 30 and the outer box 10, which would affect the placement and removal of the inner box 30. Specifically, in Figure 7 and Figure 9 As an example, the groove channels 31 are respectively arranged at the four corners of the inner box 30. The groove channels 31 include a first part 311 located on the outer bottom wall 33 and a second part 312 located on the two adjacent outer side walls 32 of the inner box 30 respectively. This design further improves the vacuum breaking effect of the groove channels 31.

[0040] like Figure 3 and Figure 4 As shown, as an example, the outer box 10 has a support platform 121 on the side wall 12 that supports the periphery 35 of the inner box 30 from below. Therefore, with the support platform 121 and the annular side wall 211 jointly holding the periphery 35 (41) of both the inner box 30 and the inner cover 40, deformation and movement of the inner box 30 and the inner cover 40 are more effectively prevented.

[0041] Compared with the prior art, the design of "an annular sidewall 21 protruding downward from the outer cover 20 and arranged along the periphery 35 of the inner cover 30, the annular sidewall 21 pressing against the periphery 41 of the inner cover 40 from above" ensures that the inner box 30 and the inner cover 40 inside the outer box 10 are always pressed and held by the annular sidewall 21 of the outer cover 20 and the outer box 10, preventing the inner box 30 from deforming or shifting; furthermore, "an annular fitting groove 211 is also provided on the annular sidewall 21 facing the sidewall 12 of the outer box 10 and arranged circumferentially along the annular sidewall 21, and the sealing ring 50 is sleeved on the annular sidewall 21 and includes an annular fitting part 51 fixedly embedded in the annular fitting groove 211 and the annular fitting part 51" The design of the annular raised portion 52, which bends at the end of the inner box 30, and seals against the side wall 12 of the outer box 10, serves two purposes. First, it prevents food in the inner box 30 from leaking from the joint between the inner box 30 and the inner lid 40 to the outer box 10 due to thermal expansion and contraction or during transportation and handling, and then from spilling from the joint between the outer box 10 and the outer lid 20, potentially causing burns to the user. Second, it facilitates the closing and closing of the outer lid 20 and the outer box 10. This is because the outer lid 20 and the outer box 10 are secured by the tight fit between the side wall 12 of the outer box 10 and the annular raised portion 52 of the sealing ring 50, which is fitted onto the annular side wall 21. Therefore, the outer lid 20 and the outer box 10 can be installed and removed by simply inserting and removing the sealing ring 50. Furthermore, since the food is contained within the structure formed by the inner box 30 and the inner lid 40, the cleaning of the outer box 10, the outer lid 20, and the sealing ring 50 can be eliminated by replacing the inner box 30 and the inner lid 40.

[0042] It should be noted that both the inner box 30 and the inner lid 40 are made of PP (polypropylene), a biodegradable and environmentally friendly material; the outer box 10 can be made of plastic or glass, and the outer lid 20 can be made of plastic. Furthermore, although the attached drawings show the wash-free lunchbox 100 of this invention as square, it is clear that it can be designed in a round or other shape according to actual needs, and is not limited to the shape shown in the attached drawings. Furthermore, the outer box 10 and outer lid 20 are sealed with a sealing ring 50, making it both aesthetically pleasing and safe. The inner box 30 and inner lid 40 are designed with an environmentally friendly film, ensuring food is stored in a sealed space while allowing for easy replacement of both (disposable), avoiding cleaning outside the kitchen. The independent design of the inner box 30 and inner lid 40 relative to the outer box 10 prevents or reduces food odor residue in the outer box 10, avoiding cross-contamination of flavors and ensuring a better reusable experience for both the outer box 10 and outer lid 20. Finally, the self-cleaning design of the outer box 10, outer lid 20, and sealing ring 50 eliminates the need for chemical residue (washing liquid).

[0043] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall fall within the scope of the present utility model.

Claims

1. A wash-free meal box comprising an outer box having a receiving cavity with a cavity opening facing upward, an outer cover covering the outer box from above the outer box and covering the cavity opening, and a sealing ring, characterized in that, The disposable lunch box also includes a disposable inner box and an inner lid, each located in the receiving cavity. The inner lid covers the inner box from above. The outer lid protrudes downward and has an annular sidewall arranged along the periphery of the inner lid. The annular sidewall presses against the periphery of the inner lid from above. The annular sidewall also has an annular insert groove facing the sidewall of the outer box and arranged circumferentially along the annular sidewall. The sealing ring is sleeved on the annular sidewall and includes an annular insert portion fixedly embedded in the annular insert groove and an annular upright portion bent out from the end of the annular insert portion. The annular upright portion seals against the sidewall of the outer box.

2. The self-cleaning meal box of claim 1, wherein, The annular upright portion is located above the annular insert portion, and there is a clearance between the upper end of the annular upright portion and the annular sidewall, which allows the sidewall of the outer box to push the upper end of the annular upright portion to deform closer to the annular sidewall to provide clearance.

3. The self-cleaning meal box according to claim 1 or 2, characterized in that, The annular raised portion is also arranged separately from the bottom end face of the outer cover.

4. The self-cleaning lunch box according to claim 1, characterized in that, The outer cover is also provided with a support structure located inside the annular sidewall and used for clearance fitting with the inner cover. The support structure is provided with an insertion structure for inserting hand tools flat. The insertion structures are respectively arranged on opposite sides of the support structure.

5. The self-cleaning lunch box according to claim 4, characterized in that, The supporting structure has through holes extending vertically. A sealing ring for narrowing the through holes is fitted on the supporting structure to define the position of the through holes. An operating component for inserting the sealing ring downwards or pulling it upwards is fitted on the outer cover.

6. The self-cleaning lunch box according to claim 1, characterized in that, The outer cover is provided with a first stacking part, and the bottom end of the outer box is provided with a second stacking part aligned with the upper and lower directions of the outer box; by means of the cooperation of the first stacking part and the second stacking part, one of the disposable lunch boxes can be stacked on top of another disposable lunch box.

7. The self-cleaning lunch box according to claim 6, characterized in that, One of the first and second stacking sections is a groove structure and the other is an outward convex structure.

8. The self-cleaning lunch box according to claim 1, characterized in that, The inner box has a pull-out structure on its periphery for the operator to remove the inner box together with the inner cover from the outer box. The pull-out structure is a pull ring structure. The outer box has a support platform on its side wall that supports the periphery of the inner box from below.

9. The self-cleaning lunch box according to claim 8, characterized in that, The pull-out structures are arranged in multiple spaces along the periphery of the inner box. The pull-out structures can be unfolded or folded relative to the inner box. The annular sidewall has a clearance notch at the position opposite the inner cover to allow the folded pull-out structures to pass.

10. The self-cleaning lunch box according to claim 1, characterized in that, The inner box has a groove channel for breaking the vacuum, and the groove channel is located on both the outer side wall and the outer bottom wall of the inner box; the groove channel includes a first part located on the outer bottom wall and a second part located on two adjacent outer side walls of the inner box respectively.

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