BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a container, and particularly to a carton having a rigid structure and damp-proof effect.
2. Description of Related Art
As the environmental-protection awareness arises, packaging of products becomes simplified, and especially, cartons may be chosen as containers of products.
With reference to FIGS. 9 to 12, a conventional carton 70 is manufactured by folding a paper material and has a box 71 and a lid 72 configured to cover the box 71. The paper material for manufacturing the conventional carton 70 has a protective layer on one of its two opposite surfaces, wherein the protective layer can be formed by coating protective oil or polypropylene material (PP). After folding the paper material to form the conventional carton 70, the protective layer is on an exterior surface of the carton 70 for damp-proofing.
However, with reference to FIGS. 9 to 12, in the conventional carton 70, periphery walls of the box 71 and the lid 72 are both formed by only a single layer of the paper material and may have insufficient structural strength. Moreover, with reference to FIGS. 10 and 11, the lid 72 has engaging openings 721 and engaging protrusions 722 formed on the paper material on a front side of the lid 72. When the paper material on the front side of the lid 72 is folded inward, each engaging protrusion 722 is mounted through a respective one of the engaging openings 721. Thereby, moisture may enter the conventional carton 70 from the engaging openings 721 and be absorbed by an interior surface of the carton 70 not covered by the protective layer, which further reduces the structural strength of the conventional carton 70.
SUMMARY OF THE INVENTION
The main objective of the present invention is to provide a carton which has an enhanced structural strength and reduces a risk of being dampened.
The carton is made of a paper material having a protective layer on a surface thereof. The carton has a box and a lid. The box forms a containing space therein. The lid has a first top sheet, a first front sheet, a second front sheet, a second top sheet, two first side sheets, two second side sheets, two wing sheets, at least one first engaging component, and at least one second engaging component. The first top sheet is foldably connected between the box and the first front sheet such that the lid is swingable relative to the box. The second front sheet is foldably connected to the first front sheet such that the first front sheet is located between the first top sheet and the second front sheet. The second top sheet is foldably connected to the second front sheet such that the second front sheet is located between the first front sheet and the second top sheet. Each one of the two first side sheets is foldably connected to a respective one of two opposite sides of the first top sheet. Each one of the two second side sheets is foldably connected to a respective one of the two first side sheets such that each one of the two first side sheets is located between the first top sheet and said second side sheet connected thereto. Each one of the two wing sheets is foldably connected to a respective one of the two second side sheets such that each one of the two second side sheets is located between said first side sheet and said wing sheet connected thereto. The at least one first engaging component has two engaging openings, and each one of the two engaging openings is formed between a respective one of the two wing sheets and said second side sheet connected thereto. The at least one second engaging component has two engaging protrusions respectively protruding from two opposite sides of the second top sheet along two opposite directions and respectively inserted into the two engaging openings of said first engaging component.
Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a first preferred embodiment of a carton in accordance with the present invention with its lid closed;
FIG. 2 is a perspective view of the carton in FIG. 1 with its lid opened;
FIG. 3 is an expanded view of the lid of the carton in FIG. 2;
FIG. 4 is an enlarged view of the lid of the carton in FIG. 2;
FIG. 5 is another enlarged view of the lid of the carton in FIG. 2;
FIG. 6 is an expanded view of a box of the carton in FIG. 2;
FIG. 7 is a perspective view of a second preferred embodiment of the carton in accordance with the present invention with its lid closed;
FIG. 8 is a perspective view of the carton in FIG. 7 with its lid opened;
FIG. 9 is a perspective view of a conventional carton;
FIG. 10 is an enlarged view of the conventional carton in FIG. 9;
FIG. 11 is another enlarged view of the conventional carton in FIG. 9; and
FIG. 12 is a partially expanded view of the conventional carton in FIG. 9.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
With reference to FIGS. 1 to 6, a first preferred embodiment of a carton in accordance with the present invention is made of a paper material and has a box 10 and a lid 20.
For damp-proofing, the paper material has a protective layer formed on one of two opposite surfaces thereof. The protective layer can be formed by coating protective oil or polypropylene material, but the material of the protective layer is not limited thereto as long as the protective layer prevents the paper material from absorbing moisture and being dampened.
With reference to FIGS. 2, 3, and 6, the box 10 has a containing space formed therein and has a bottom sheet 11, two first box side sheets 12, two second box side sheets 13, two through holes 14, two protrusions 15, two receiving openings 16, a front box sheet 17, a rear box sheet 18, two inserting sheets 19, and two box connecting sheets 30.
With reference to FIG. 6, each one of the two first box side sheets 12 is foldably connected to a respective one of two opposite side edges of the bottom sheet 11. Thereby, the bottom sheet 11 is located between the two first box side sheets 12. Each one of the two second box side sheets 13 is connected to an edge of a respective one of the two first box side sheets 12 away from the bottom sheet 11; i.e., each one of the two first box side sheets 12 is located between the bottom sheet 11 and said second box side sheet 13 connected thereto.
With reference to FIG. 6, the two through holes 14 are formed through the bottom sheet 11 and respectively located near the two first box side sheets 12, and the two protrusions 15 respectively protrude from the two second box side sheets 13. When the two second box side sheets 13 are respectively folded relative to the two first box side sheets 12, the two protrusions 15 are respectively inserted into the two through holes 14. Thereby, each one of the two first box side sheets 12 and said second box side sheet 13 connected thereto forms a side wall of the box 10. Each one of the two receiving openings 16 is formed between a respective one of the two first box side sheets 12 and said second box side sheet 13 connected thereto and faces toward a front of the box 10.
With reference to FIGS. 3 and 6, the front box sheet 17 is foldably connected to a front edge of the bottom sheet 11, and the rear box sheet 18 is foldably connected to a rear edge of the bottom sheet 11. Thereby, the bottom sheet 11 is located between the front box sheet 17 and the rear box sheet 18. Each one of the two inserting sheets 19 is foldably connected to a respective one of two opposite sides of the front box sheet 17. When the front box sheet 17 is folded relative to the bottom sheet 11, the two inserting sheets 19 are respectively inserted into the two receiving openings 16.
With reference to FIGS. 2 to 5, the lid 20 has a first top sheet 21, a first front sheet 22, a second front sheet 23, a second top sheet 24, two first side sheets 25, two second side sheets 26, two wing sheets 27, two first engaging components, two second engaging components, and two lid connecting sheets.
With reference to FIG. 3, the first top sheet 21 is foldably connected to the rear box sheet 18 of the box 10 such that the lid 20 is swingable relative to the box 10. The first front sheet 22 is foldably connected to an edge of the first top sheet 21 away from the box 10, and the first top sheet 21 is located between the rear box sheet 18 and the first front sheet 22. The second front sheet 23 is foldably connected to an edge of the first front sheet 22 away from the first top sheet 21 such that the first front sheet 22 is located between the first top sheet 21 and the second front sheet 23. The second top sheet 24 is foldably connected to an edge of the second front sheet 23 away from the first front sheet 22 such that the second front sheet 23 is located between the first front sheet 22 and the second top sheet 24.
With reference to FIG. 3, each one of the two first side sheets 25 is foldably connected to a respective one of two opposite sides of the first top sheet 21. Each one of the two second side sheets 26 is foldably connected to an edge of a respective one of the two first side sheets 25 such that each one of the two first side sheets 25 is located between the first top sheet 21 and said second side sheet 26 connected thereto. Each one of the two second side sheets 26 has an engaging sheet 261 foldably connected thereto. After the lid 20 is formed by folding the sheets described above, the engaging sheet 261 is located between the first front sheet 22 and the second front sheet 23, which improves structural strength of the lid 20. Each one of the two wing sheets 27 is foldably connected to an edge of a respective one of the two second side sheets 26 such that each one of the two second side sheets 26 is located between said first side sheet 25 and said wing sheet 27 connected thereto.
With reference to FIG. 3, each one of the two first engaging components has two engaging openings 28. One of the two engaging openings 28 is formed between one of the two wing sheets 27 and said second side sheet 26 connected thereto, and the other one of the two engaging openings 28 is formed between the other one of the two wing sheets 27 and said second side sheet 26 connected thereto. Each one of the two second engaging components has two engaging protrusions 29. The two engaging protrusions 29 respectively protrude from two opposite sides of the second top sheet 24 along two opposite directions and are configured to be respectively inserted into the two engaging openings 28.
With reference to FIGS. 3 and 4, more specifically, in one of the two first engaging components in the first preferred embodiment, each one of the two engaging openings 28 is located at a corner of the lid 20 and is formed between said wing sheet 27, said second side sheet 26, and said engaging sheet 261 connected to the second side sheet 26. In one of the two second engaging components in the first preferred embodiment, the two engaging protrusions 29 respectively extend from the two opposite sides of the second top sheet 24 to two opposite sides of the second front sheet 23.
In the first preferred embodiment, the lid has two first engaging components and two second engaging components having said engaging openings 28 and said engaging protrusions 29. In other embodiments, numbers of said first engaging components and said second engaging components are not limited to the first preferred embodiment as long as the second top sheet 24 can be engaged with said second side sheet 26 and said wing sheet 27 via said engaging openings 28 and said engaging protrusions 29.
With reference to FIG. 6, each one of the two box connecting sheets 30 is connected between a respective one of the two first box side sheets 12 and the rear box sheet 18. Each one of the two box connecting sheets 30 has a crease 31 for folding said box connecting sheet 30. Each one of the two lid connecting sheets is connected between a respective one of the two first side sheets 25 and the first front sheet 22, and also has a crease for folding said lid connecting sheet.
With reference to FIGS. 7 and 8, a second preferred embodiment of the carton in accordance with the present invention differs from the first preferred embodiment in that: in the second preferred embodiment, the carton is designed in an elongated rectangular shape according to an object to be contained therein.
In the carton in accordance with the present invention, the lid 20 has the first front sheet 22 and the second front sheet 23 being foldable relatively, said first side sheet 25 and said second side sheet 26 being foldable relatively, and the second top sheet 24 located on an inner side of the first top sheet 21 after folding the paper material to form the lid 20. Thereby, not only the lid 20 has a double-layered structure to improve its structural strength, but both of interior and exterior sides of the lid 20 can be protected by the protective layer of the paper material after folding those sheets. Compared to the conventional carton 70, the carton in accordance with the present invention has improved structural strength and better damp-proofing effect to preserve objects contained therein.
Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and features of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Patent Application
20250162757
