Lunch box capable of preventing accidental opening

Abstract

The utility model provides a meal box capable of preventing accidental opening, which comprises a box body and a cover body, the edge of the box body is provided with a clamping edge, the edge of the cover body extends downwards to form a cover edge, the inner side of the cover edge is provided with a convex edge buckled with the clamping edge, and the lower part of the clamping edge is convexly provided with a protective groove which can be clamped into the edge of the clamping edge and is provided with an upward opening. The clamping edge and the protruding edge are buckled with each other, so that the edge of the box body is tightly attached to the cover edge of the cover body, the sealing effect is achieved, and the clamping edge and the protruding edge which are buckled with each other can prevent the cover body from falling off to a certain degree. The outer wall of the box body extends outwards to form the protective groove, the opening of the protective groove is upward, and when the cover body is buckled on the box body, the clamping edge of the cover body is just clamped into the protective groove, so that the outer wall of the protective groove can be collided even if the cover body is accidentally collided, the cover edge of the cover body cannot be directly contacted, the cover edge can be prevented from being deformed or pushed away upwards due to collision, and the service life of the cover body is prolonged. The function of preventing the cover body from being opened accidentally is achieved.

Description

Technical Field

[0001] This utility model relates to the field of lunch box technology, and in particular to a lunch box that is prevented from being accidentally opened. Background Technology

[0002] Lunch boxes are widely used in modern life and typically consist of a box body and a lid. Closing the lid promptly after placing food inside helps keep it fresh and prevents contamination. In some situations, lunch boxes need to be easy to open while also preventing accidental opening during transport, necessitating further improvements to the locking mechanism. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a lunch box with a simple and reasonable structure, tight fastening and protection against accidental opening.

[0004] This utility model achieves the above objectives as follows:

[0005] This utility model relates to a lunch box designed to prevent accidental opening. It includes a box body and a lid. The edge of the box body is provided with a retaining edge. The edge of the lid extends downward to form a lid edge. The inner side of the lid edge is provided with a protruding ridge that engages with the retaining edge. Below the retaining edge, there is a protective groove with an upward opening that can be engaged with the edge of the retaining edge.

[0006] Furthermore, the protective groove is provided with intermittently connected breaching sections.

[0007] Furthermore, the box and the cover are square, the cover extends outward at the corner to form an opening, and the breaking part is located at the corner.

[0008] Furthermore, the protective groove has a cross-section that is a thin-walled U-shape with the bottom suspended, and the outer wall of the protective groove is connected to the box body with reinforcing ribs.

[0009] Furthermore, the center of the cover is recessed downward to form a recess that can be fitted into the box body, and the edge of the recess is turned outward to form a cover edge with a U-shaped cross section.

[0010] Furthermore, the card edge is the outward convex edge of the box body edge, and the convex ridge is provided on the inner side of the U-shaped cover edge.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a lunch box designed to prevent accidental opening, comprising a box body and a lid. The edge of the box body is provided with a retaining edge, and the edge of the lid extends downward to form a lid edge. The inner side of the lid edge has a protruding ridge that engages with the retaining edge. Below the retaining edge, there is a protective groove with an upward-facing opening that can be engaged with the edge of the retaining edge. The retaining edge and the protruding ridge engage with each other, ensuring a tight fit between the edge of the box body and the lid edge, thus providing a seal. Furthermore, the interlocking retaining edge and the protruding ridge can prevent the lid from falling off to a certain extent. The protective groove is formed by the outward extension of the outer wall of the box body, with its opening facing upward. When the lid is placed on the box body, the retaining edge of the lid precisely engages within the protective groove. This ensures that even if there is an accidental impact, the impact will be to the outer wall of the protective groove, rather than directly contacting the lid edge. Therefore, it prevents the lid edge from deforming or being pushed upward due to impact, thus preventing the lid from being accidentally opened. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 This is a three-dimensional structural diagram of the lunchbox of this utility model in the locked state;

[0014] Figure 2 for Figure 1 Overall sectional view;

[0015] Figure 3 for Figure 1 Schematic diagram of the split structure;

[0016] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0017] Figure 5 This is a schematic diagram of the sectional structure of the cover.

[0018] Figure 6 for Figure 5 Enlarged view at point B in the middle;

[0019] Figure 7 This is a schematic diagram of the cross-sectional structure of the box.

[0020] Figure 8 for Figure 7 Enlarged view at point C;

[0021] Figure 9 This is a schematic diagram of the box structure from another perspective.

[0022] Figure 10 for Figure 9 Enlarged view at point D;

[0023] Figure 11 This is a schematic diagram of the box structure from another perspective.

[0024] In the diagram, 1 is the box body, 11 is the retaining edge, 12 is the protective groove, 13 is the breaking part, 14 is the reinforcing rib, 2 is the cover body, 21 is the cover edge, 22 is the protruding ridge, 23 is the opening part, and 24 is the recess. Detailed Implementation

[0025] refer to Figures 1 to 11 As shown, a lunch box designed to prevent accidental opening is provided, comprising a box body 1 and a lid 2. The edge of the box body 1 is provided with a retaining edge 11, and the edge of the lid 2 extends downward to form a lid edge 21. The inner side of the lid edge 21 is provided with a protruding rib 22 that engages with the retaining edge 11. A protective groove 12 with an upward opening is provided below the retaining edge 11, which can be engaged with the edge of the retaining edge 11.

[0026] As shown in the attached diagram, both the box body 1 and the lid 2 are made of plastic with a certain degree of elasticity. The locking edge 11 and the protruding ridge 22 interlock, ensuring a tight seal between the edge of the box body 1 and the lid edge 21 of the lid 2, thus providing a seal. The interlocking locking edge 11 and protruding ridge 22 also prevent the lid 2 from falling off to some extent. Since the lid edge 21 is fastened to the outside of the box body 1, its edge protrudes beyond the outer wall of the box body 1. Without additional protection, it is easily dislodged due to accidental impacts that could break the interlocking structure of the locking edge 11 and protruding ridge 22. The protective groove 12 extends outward from the outer wall of the box body 1, with its opening facing upward. When the lid 2 is fastened onto the box body 1, the locking edge 11 of the lid fits precisely into the protective groove 12. This ensures that even if there is an accidental impact, the lid will only contact the outer wall of the protective groove 12, rather than directly contacting the lid edge 21 of the lid 2. Therefore, it prevents the lid edge 21 from deforming or being pushed upwards due to impacts, thus preventing the lid from being accidentally opened. The protective groove 12 can be an integral ring structure surrounding the outer wall of the box 1, or it can be composed of several discontinuous structures, as long as it can prevent accidental impact to the locking edge 11 of the cover.

[0027] Furthermore, the protective groove 12 is provided with intermittently connected breaking parts 13.

[0028] As shown in the attached figure, the breaking part 13 is part of the protective groove 12. However, the connection between it and the adjacent protective groove 12 and the outer wall of the box body 1 adopts a discontinuous connecting block. When it is necessary to open the cover 2, the breaking part 13 can be pried open by force, and the cover 2 can be opened easily after exposing part of the locking edge 11.

[0029] Furthermore, the box body 1 and the cover body 2 are square, the cover body 2 extends outward at the corner to form an opening part 23, and the breaking part 13 is located at the corner.

[0030] As shown in the attached diagram, the breaking part 13 also protrudes outward, allowing the opening part 23 on the cover 2 to be accommodated. For ease of use, there is an opening part 23 at each of the four corners of the cover 2, and the box body 1 protrudes outward at each of the four corners.

[0031] Furthermore, the protective groove 12 has a cross-section that is a thin-walled U-shape with the bottom suspended, and a reinforcing rib 14 is connected between the outer wall of the protective groove 12 and the box body 1.

[0032] As shown in the attached diagram, the U-shaped protective groove 12 extends outward and downward from the outer wall of the box body 1 to provide a certain depth of accommodating space. Simultaneously, the U-shaped protective groove 12 is arranged in a ring around the box body 1, suspended in mid-air. Because the suspended U-shaped protective groove 12 has a relatively long longitudinal dimension, it possesses sufficient strength at the bottom when impacted, while its outer wall also provides a certain degree of elastic cushioning. This allows the cover 2 and the box body 1 to become a single unit after being fastened together, resulting in better overall impact protection. The reinforcing rib 14 allows the side of the suspended protective groove 12 closest to the box body 1 to be connected to the box body 1 at intervals, enhancing the strength of the U-shaped protective groove 12 without affecting the elastic cushioning effect of its outer wall.

[0033] Furthermore, the middle part of the cover 2 is recessed downward to form a recess 24 that can be fitted into the box 1, and the edge of the recess 24 is turned outward to form a cover edge 21 with a U-shaped cross section.

[0034] As shown in the attached figure, when the U-shaped cover edge 21 and the U-shaped protective groove 12 are fastened together, the recess 24 is embedded in the box body 1, making the fastening surface fit more closely and seal. The free end of the U-shaped cover edge 21 is far from the fastening surface and has a certain amount of free deformation. Even if a certain local deformation occurs during the fastening process, it will not affect the sealing effect of the fastening surface.

[0035] Furthermore, the edge 11 is the outwardly protruding edge of the box body 1, and the protruding ridge 22 is arranged around the inner side of the U-shaped cover edge 21.

[0036] As shown in the attached diagram, when the edge of the box body 1 extends outward and downward, the edge forming the entrance of the box body 1 protrudes outward, creating a smoothly transitioned outward-facing retaining edge 11. After the edge of the recess 24 folds outward, the inner side of the cover edge 21 protrudes inward, forming an integrated annular convex ridge 22. When fastened, the elastic cover edge 21 expands outward due to the outward pressure of the retaining edge 11, allowing the convex ridge 22 to pass over the smoothly transitioned retaining edge 11, forming a more stable fastening effect. At the same time, the elastic retaining edge 11 presses against the inner side of the cover edge 21, causing a certain degree of deformation, making the fastening surface more airtight and further enhancing the sealing effect.

[0037] In the detailed description of this utility model, the terms "upper," "lower," "left," "right," "front," and "rear," etc., indicate the positional relationship of the operator when using this utility model. They are only for the convenience of describing this utility model and do not indicate or imply that the device or component referred to must have a specific positional relationship. Therefore, they should not be construed as limitations on this utility model. It is understood that the above embodiments only illustrate preferred embodiments of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of this utility model. These all fall within the protection scope of this utility model. Therefore, all equivalent transformations and modifications made with respect to the claims and scope of this utility model should fall within the scope of the claims of this utility model.

Claims

1. A lunchbox designed to prevent accidental opening, characterized in that: The box includes a box body (1) and a cover body (2). The edge of the box body (1) is provided with a retaining edge (11). The edge of the cover body (2) extends downward to form a cover edge (21). The inner side of the cover edge (21) is provided with a protruding ridge (22) that engages with the retaining edge (11). The lower part of the retaining edge (11) is provided with an upward-facing protective groove (12) that can be engaged with the edge of the retaining edge (11).

2. The lunch box designed to prevent accidental opening according to claim 1, characterized in that: The protective groove (12) is provided with a discontinuously connected breaking part (13).

3. The lunch box designed to prevent accidental opening according to claim 2, characterized in that: The box body (1) and the cover body (2) are square. The cover body (2) extends outward at the corner to form an opening part (23). The breaking part (13) is located at the corner.

4. The lunch box designed to prevent accidental opening according to claim 1, characterized in that: The protective groove (12) has a cross-section of a thin-walled U-shape with the bottom suspended, and the outer wall of the protective groove (12) is connected to the box body (1) by a reinforcing rib (14).

5. The lunch box for preventing accidental opening according to claim 4, characterized in that: The middle part of the cover (2) is recessed downward to form a recess (24) that can be fitted into the box (1), and the edge of the recess (24) is turned outward to form a cover edge (21) with a U-shaped cross section.

6. The lunch box for preventing accidental opening according to claim 5, characterized in that: The edge (11) is the outer protruding edge of the box body (1), and the protruding ridge (22) is arranged around the inner side of the U-shaped cover edge (21).

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