Injection molded meal box with crush resistant breakage prevention structure

Abstract

The utility model relates to injection lunch box technical field discloses an injection lunch box of compression -resistant breakage -proof structure, including lunch box body, the lunch box body outer wall fixedly connected with reinforcing strip no.

Description

Technical Field

[0001] This utility model relates to the field of injection molded lunch box technology, and in particular to an injection molded lunch box with a pressure-resistant and breakage-proof structure. Background Technology

[0002] In the fields of fast food delivery, takeout transportation, and food packaging, injection-molded lunch boxes have been widely used due to their advantages such as fast molding speed, low cost, high strength, and recyclability. To meet the requirements of hygiene, airtightness, and structural strength during food storage, transportation, and use, the structural design of injection-molded lunch boxes is continuously being optimized towards higher compressive strength, better sealing, and more robust connections, becoming an important research direction in the packaging products industry.

[0003] Existing injection-molded lunchboxes mainly consist of a box body and a lid. The lid is typically connected to the box body via mechanical snap-fit, screw fastening, or elastic compression. For sealing, rubber rings, silicone strips, or soft plastic components are often placed at the edge of the lid, forming a sealed cavity through compression to prevent liquid or gas leakage. In terms of structural reinforcement, the box body usually uses ribs or thickened walls to improve its compressive strength, ensuring that the lunchbox does not deform or break during stacking and transportation.

[0004] However, existing injection-molded lunch boxes still suffer from insufficient connection strength between the lid and the box body in actual use. Because most connection structures are simply designed, such as snap-fit ​​mechanisms relying solely on friction with the edges, the lid can easily detach from the box body under external impact or temperature changes, causing leakage and affecting user experience and food safety. Furthermore, the lack of a stable locking mechanism between the sealing strip and connecting components leads to decreased sealing performance. Especially after frequent opening and closing or prolonged use, the sealing strip is prone to loosening and deformation, further weakening the lunch box's sealing and practicality. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an injection-molded lunch box with a pressure-resistant and damage-resistant structure, which aims to improve the problem of easy loosening when the injection-molded lunch box is connected to the lid.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pressure-resistant and damage-resistant injection-molded lunch box, comprising a lunch box body, a reinforcing strip fixedly connected to the outer wall of the lunch box body, a reinforcing ring fixedly connected to the top of the lunch box body, a lunch lid provided on the top of the lunch box body, and a connecting component provided inside the lunch lid; The connecting assembly includes a connecting plate, which is rotatably connected inside the lid. A locking block is fixedly connected to one side of the connecting plate, and the locking block engages with a reinforcing ring. A reinforcing component is provided on one side of the locking block.

[0007] As a further description of the above technical solution: The reinforcing component includes a second reinforcing strip, one side of which is fixedly connected to one side of the locking block. The reinforcing ring has a reinforcing groove inside, and the second reinforcing strip fits into the reinforcing groove.

[0008] As a further description of the above technical solution: The lid has a connecting groove inside.

[0009] As a further description of the above technical solution: The lid has a connecting strip inside, which fits into the connecting groove.

[0010] As a further description of the above technical solution: A sealing strip is fixedly connected to the bottom of the connecting strip, and the bottom of the sealing strip is in contact with the top of the reinforcing ring.

[0011] As a further description of the above technical solution: A groove is provided between the connecting strip and the sealing strip.

[0012] As a further description of the above technical solution: The lid has a raised strip fixedly connected inside.

[0013] As a further description of the above technical solution: The protrusions fit into the grooves.

[0014] This utility model has the following beneficial effects: 1. In this utility model, firstly, the bottom of the lid is attached to the top of the reinforcing ring, then the connecting plate is fastened to the reinforcing ring, and then the locking block at the bottom of the connecting plate is fastened to the reinforcing ring. At the same time, the reinforcing strip on one side of the locking block is engaged with the reinforcing groove in the reinforcing ring for locking connection. This achieves the effect of facilitating connection and improving the connection strength of the lid, solving the problem of easy loosening when the injection molded lunch box is connected to the lid, and improving the practicality of the injection molded lunch box.

[0015] 2. In this utility model, the sealing strip and the connecting strip are tightly connected by the convex strip inside the lid and the groove on the connecting strip and the sealing strip. Then, the lid and the body of the lunch box are sealed by the bottom of the sealing strip being attached to the top of the reinforcing ring, which improves the sealing performance and solves the problem that the sealing strip is easily dropped when the traditional injection-molded lunch box is fastened by only a single friction force. This improves the sealing performance of the injection-molded lunch box. Attached Figure Description

[0016] Figure 1 This is a perspective view of an injection-molded lunchbox with a pressure-resistant and breakage-proof structure proposed in this utility model; Figure 2 This is a schematic diagram of the reinforcing ring structure of an injection-molded lunch box with a pressure-resistant and damage-proof structure proposed in this utility model; Figure 3 This is a schematic diagram of the connecting plate structure of an injection-molded lunch box with a pressure-resistant and damage-resistant structure proposed in this utility model; Figure 4 This is a schematic diagram of the bottom structure of an injection-molded lunch box with a pressure-resistant and breakage-proof structure proposed in this utility model; Figure 5 This is a schematic diagram of the sealing strip structure of an injection-molded lunch box with a pressure-resistant and damage-resistant structure proposed in this utility model.

[0017] Legend: 1. Lunch box body; 2. Lunch lid; 3. Connecting plate; 4. Reinforcing strip one; 5. Reinforcing ring; 6. Reinforcing groove; 7. Locking block; 8. Reinforcing strip two; 9. Connecting groove; 10. Raised strip; 11. Connecting strip; 12. Sealing strip; 13. Groove. Detailed Implementation

[0018] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-3 This utility model provides an embodiment of an injection-molded lunch box with a pressure-resistant and breakage-proof structure, comprising a lunch box body 1, a reinforcing strip 4 fixedly connected to the outer wall of the lunch box body 1, the reinforcing strip 4 being used to enhance the pressure resistance of the lunch box body 1 in the vertical direction and prevent deformation during stacking and transportation, a reinforcing ring 5 fixedly connected to the top of the lunch box body 1, the reinforcing ring 5 being used to improve the structural rigidity of the top of the lunch box body 1 and prevent damage caused by concentrated force during the opening or sealing of the lid 2, a lid 2 being provided on the top of the lunch box body 1, the lid 2 being used to cover and close the top opening of the lunch box body 1 to prevent food leakage or contamination inside the lunch box, and a connecting component being provided inside the lid 2, the connecting component being used to achieve a stable locking connection between the lid 2 and the lunch box body 1.

[0020] The connecting assembly includes a connecting plate 3, which is rotatably connected inside the lid 2. The connecting plate 3 can rotate around a pivot to switch between open and closed states, improving the flexibility of the lid-closing operation. A locking block 7 is fixedly connected to one side of the connecting plate 3. The locking block 7 is used to form a snap-fit ​​connection with the reinforcing ring 5, realizing the initial locking and fixing of the lid 2 and the lunch box body 1, preventing loosening and falling off during handling or transportation. A reinforcing assembly is provided on one side of the locking block 7, including a reinforcing strip 8. One side of the reinforcing strip 8 is fixedly connected to one side of the locking block 7. The reinforcing strip 8 provides support and reinforcement for the locking block 7, improving the connection stability. A reinforcing groove 6 is provided inside the reinforcing ring 5. The reinforcing groove 6 is matched with the reinforcing strip 8. The reinforcing strip 8 and the reinforcing groove 6 fit together to form a multi-point locking structure, effectively preventing the lid 2 from coming off under stress or vibration, and improving the overall connection reliability.

[0021] Reference Figure 4 and Figure 5 The inside of the lid 2 is provided with a connecting groove 9, which provides a fitting space for the connecting strip 11, ensuring that the connecting components are stably fixed inside the lid 2 and preventing displacement or loosening. The connecting strip 11 is provided inside the lid 2 and fits into the connecting groove 9. The connection strip 11 and the connecting groove 9 cooperate to achieve the structural positioning and stable assembly of the internal components of the lid 2, preventing the connecting strip 11 from coming off or deforming during frequent opening and closing. A sealing strip 12 is fixedly connected to the bottom of the connecting strip 11. The sealing strip 12 is used to achieve a sealed connection between the lid 2 and the food container body 1, preventing liquid leakage or the entry of external impurities, and ensuring food hygiene and safety. The bottom of the sealing strip 12 is attached to the top of the reinforcing ring 5. The attached connection ensures that the sealing strip 12 forms a stable seal under pressure, improving the overall sealing performance.

[0022] A groove 13 is provided between the connecting strip 11 and the sealing strip 12. The groove 13 is used to enhance the mechanical fitting structure between the connecting strip 11 and the sealing strip 12, which helps to improve the assembly firmness of the sealing strip 12 and prevent it from falling off or loosening during long-term use. A protrusion 10 is fixedly connected inside the lid 2. The protrusion 10 fits into the groove 13. The fitting structure between the protrusion 10 and the groove 13 further improves the stability between the connecting strip 11 and the sealing strip 12, while enhancing the positioning accuracy and vibration resistance of the sealing component, thereby improving the overall sealing performance and structural reliability of the injection molded lunch box.

[0023] Working principle: When using this pressure-resistant and breakage-resistant injection-molded lunch box, firstly, when the lunch box body 1 and the lid 2 are fastened together, the bottom of the lid 2 fits against the top of the reinforcing ring 5. Then, the connecting plate 3 is fastened to the reinforcing ring 5. Subsequently, the locking block 7 at the bottom of the connecting plate 3 is fastened to the reinforcing ring 5. At the same time, the reinforcing strip 8 on one side of the locking block 7 is engaged with the reinforcing groove 6 inside the reinforcing ring 5 for locking connection. The lunch box body 1 is strengthened by the reinforcing strip 4, which achieves the effect of facilitating connection and improving the connection strength of the lid. When sealing the lunch box body 1 and the lid 2, the sealing strip 12 is connected by embedding the connecting strip 11 into the connecting groove 9 on the lid 2. The sealing strip 12 and the connecting strip 11 are tightly connected by fitting the protrusion 10 inside the lid 2 with the groove 13 on the connecting strip 11 and the sealing strip 12. Then, the lid 2 and the lunch box body 1 are sealed by the bottom of the sealing strip 12 being attached to the top of the reinforcing ring 5, thereby improving the sealing performance.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure-resistant and breakage-resistant injection-molded lunch box, comprising a lunch box body (1), characterized in that: The outer wall of the lunch box body (1) is fixedly connected with a reinforcing strip (4), the top of the lunch box body (1) is fixedly connected with a reinforcing ring (5), the top of the lunch box body (1) is provided with a lid (2), and the inside of the lid (2) is provided with a connecting component. The connecting assembly includes a connecting plate (3), which is rotatably connected inside the lid (2). A locking block (7) is fixedly connected to one side of the connecting plate (3), and the locking block (7) is fitted with a reinforcing ring (5). A reinforcing component is provided on one side of the locking block (7).

2. The injection-molded lunch box with a pressure-resistant and breakage-resistant structure according to claim 1, characterized in that: The reinforcing component includes a second reinforcing strip (8), one side of which is fixedly connected to the side of the card block (7), and a reinforcing groove (6) is provided inside the reinforcing ring (5), and the second reinforcing strip (8) is fitted into the reinforcing groove (6).

3. The injection-molded lunch box with a pressure-resistant and breakage-resistant structure according to claim 1, characterized in that: The lid (2) has a connecting groove (9) inside.

4. The injection-molded lunch box with a pressure-resistant and breakage-resistant structure according to claim 1, characterized in that: The lid (2) is provided with a connecting strip (11) inside, and the connecting strip (11) is fitted into the connecting groove (9).

5. The injection-molded lunch box with a pressure-resistant and breakage-resistant structure according to claim 4, characterized in that: A sealing strip (12) is fixedly connected to the bottom of the connecting strip (11), and the bottom of the sealing strip (12) is in contact with the top of the reinforcing ring (5).

6. The injection-molded lunch box with a pressure-resistant and breakage-resistant structure according to claim 4, characterized in that: A groove (13) is provided between the connecting strip (11) and the sealing strip (12).

7. The injection-molded lunch box with a pressure-resistant and breakage-resistant structure according to claim 1, characterized in that: The lid (2) has a protrusion (10) fixedly connected inside.

8. The injection-molded lunch box with a pressure-resistant and breakage-resistant structure according to claim 7, characterized in that: The protrusion (10) is fitted into the groove (13).

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