A high-strength disposable plastic lunch box

Abstract

This utility model discloses a high-strength disposable plastic lunch box, belonging to the technical field of plastic lunch boxes. It includes a side wall with a ring-shaped structure, a bottom surface at the bottom of the side wall, an upper wall on the side wall, and an inclined portion between the side wall and the bottom surface. An acute angle α exists between the extended surface of the side wall and the inclined portion, and an obtuse angle b exists between the bottom surface and the inclined portion. The acute angle α and the obtuse angle b are complementary. This utility model significantly improves structural strength and prevents deformation through the complementary angle design of the inclined portion. The recessed and thickened design of the finger clip ensures stable handling and improves convenience, while also enhancing heat insulation. The rounded corner treatment of the top edge enhances safety and comfort. Overall, it achieves a balance between lightweight and high strength, extending its service life.

Description

Technical Field

[0001] This utility model relates to the field of plastic lunch box technology, specifically a high-strength disposable plastic lunch box. Background Technology

[0002] Plastic lunch boxes are plastic containers made of food-grade plastic materials, designed to make it easier for us to bring food out. Different shapes can hold different things, making them more convenient to use. In addition to the common square, rectangular, and round shapes, there are also sets specifically designed for picnics, making life simpler and more convenient.

[0003] The above-mentioned technical conditions also have shortcomings: existing disposable plastic lunch boxes often adopt a simple vertical sidewall and flat bottom design, which has low structural strength and is prone to deformation or breakage when filled with hot food or subjected to pressure.

[0004] Based on this, the present invention designs a high-strength disposable plastic lunch box to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-strength disposable plastic lunch box to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-strength disposable plastic lunch box, including a side wall, the side wall being an annular structure, a bottom surface being provided at the bottom of the side wall, an upper wall being provided on the side wall, and an inclined portion being provided between the side wall and the bottom surface, an acute angle α existing between the extended surface of the side wall and the inclined portion, and an obtuse angle b existing between the bottom surface and the inclined portion, the acute angle α and the obtuse angle b being complementary.

[0007] By adopting the above technical solution, the complementary design of acute angle a and obtuse angle b optimizes the stress distribution through the inclined part, reduces the direct stress points between the bottom surface and the side wall, thereby improving the overall structural strength and effectively preventing the side wall from shifting or deforming under pressure.

[0008] Preferably, finger clips are provided on both sides of the sidewall, and the finger clips are formed by the inward indentation of the middle of the sidewall and the upper wall.

[0009] By adopting the above technical solution, the recessed design of the finger clip makes it easier for users to steadily pick up the lunch box from the bottom or top with their index finger and thumb, improving ease of use and preventing slipping or spillage.

[0010] Preferably, the thickness of the finger clip is greater than the thickness of the sidewall.

[0011] By adopting the above technical solution, increasing the thickness of the finger clip enhances the durability and pressure resistance of this part, preventing damage due to stress concentration during repeated handling, and also improving the heat insulation performance of this part.

[0012] Preferably, the top of the upper wall is provided with a top edge, and the top edge is rounded.

[0013] By adopting the above technical solution, the rounded corner treatment of the top edge eliminates sharp edges, improves the comfort of the user's lips, reduces the risk of cuts, and optimizes the overall user experience.

[0014] In summary, this application has the following beneficial technical effects: the complementary angle design of the inclined part significantly improves the structural strength and prevents deformation; the concave and thickened design of the finger clip enables stable handling, improves convenience, and enhances heat insulation; the rounded corner treatment of the top edge enhances safety and comfort, and the overall design achieves a balance between lightweight and high strength, extending service life. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0017] Figure 2 This is a side view of the structure in this embodiment;

[0018] Figure 3 This is a top view illustrating the structure of this embodiment;

[0019] Figure 4 This is a schematic diagram of the finger clip in this embodiment.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Side wall; 2. Bottom surface; 3. Top wall; 4. Top edge; 5. Inclined part; 6. Finger gripper. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0024] A high-strength disposable plastic lunch box includes a side wall 1, which is an annular structure. A bottom surface 2 is provided at the bottom of the side wall 1. The bottom surface 2 is square, circular, or elliptical and can be well connected with the annular side wall 1. An upper wall 3 is provided on the side wall 1. An inclined portion 5 is also provided between the side wall 1 and the bottom surface 2. There is an acute angle α between the extended surface of the side wall 1 and the inclined portion 5, and there is an obtuse angle b between the bottom surface 2 and the inclined portion 5. The acute angle α and the obtuse angle b are complementary. Compared with the original lunch box design, the stress-bearing area of ​​the bottom surface 2 and the side wall 1 is reduced, that is, the overall strength of the lunch box is improved, and the side wall 1 is prevented from easily shifting outward or inward.

[0025] Furthermore, finger clips 6 are provided on both sides of the side wall 1. The finger clips 6 are formed by the inward indentation of the middle of the side wall 1 and the upper wall 3, which can be used to smoothly pick up and put down the lunch box from the bottom or the top with two fingers, thereby improving the use of the lunch box.

[0026] Furthermore, the thickness of the finger clip 6 is greater than the thickness of the side wall 1, which means that the finger clip 6 has better heat resistance, preventing burns when taking out or putting in a food container full of food, and improving its usability.

[0027] Furthermore, a top edge 4 is provided at the top of the upper wall 3, and the top edge 4 is rounded, which makes the user experience better when using the lunch box.

[0028] The implementation principle of this embodiment is as follows: The lunch box adopts a connection method between the annular sidewall 1 and the bottom surface 2. The bottom surface 2 can be designed as square, round or elliptical to adapt to different needs. The setting of the inclined part 5 makes the extended surface of the sidewall 1 form an acute angle a with the inclined part 5, and the bottom surface 2 forms an obtuse angle b with the inclined part 5. The complementary relationship between the two disperses the pressure to the inclined part 5 when subjected to force, reducing the stress concentration of the sidewall 1 and the bottom surface 2, thereby improving the deformation resistance. The finger clip 6 is easy to hold with two fingers through the inner recess. Its thickened structure ensures the stability when picking up, and can also play a certain heat insulation role. The overall structure achieves high strength by reducing the force-bearing area, while maintaining lightweight characteristics.

[0029] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-strength disposable plastic lunch box, comprising a side wall (1), characterized in that: The sidewall (1) is a ring structure. A bottom surface (2) is provided at the bottom of the sidewall (1), and an upper wall (3) is provided on the sidewall (1). An inclined part (5) is also provided between the sidewall (1) and the bottom surface (2). An acute angle a exists between the extended surface of the sidewall (1) and the inclined part (5), and an obtuse angle b exists between the bottom surface (2) and the inclined part (5). The acute angle a and the obtuse angle b are complementary.

2. A high-strength disposable plastic lunch box according to claim 1, characterized in that: Both sides of the sidewall (1) are provided with finger clips (6), which are formed by the inward indentation of the middle of the sidewall (1) and the upper wall (3).

3. A high-strength disposable plastic lunch box according to claim 2, characterized in that: The thickness of the finger clip (6) is greater than the thickness of the sidewall (1).

4. A high-strength disposable plastic lunch box according to claim 1, characterized in that: The top of the upper wall (3) is provided with a top edge (4), and the top edge (4) is rounded.

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