Food packaging box with buffer structure

By designing a food packaging box with a cushioning structure, utilizing a drying plate to absorb moisture, a damping rod for cushioning and protection, and a support foot plate and tension plate structure to ensure support effect, the problems of poor cushioning effect and low space utilization of traditional packaging boxes are solved, and convenient opening and secondary use are achieved.

CN224131803UActive Publication Date: 2026-04-17QINGDAO LEKANG PACKAGING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QINGDAO LEKANG PACKAGING CO LTD
Filing Date
2025-05-07
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Traditional food packaging boxes have poor cushioning effect, especially in humid conditions, they are prone to collapsing, and the excessive thickness of the packaging leads to reduced space utilization, making them inconvenient to disassemble and difficult to reuse.

Method used

A food packaging box with a cushioning structure was designed, including a main box body, support feet, a stretching plate, a cushioning structure, and a sealing strip assembly. The drying plate absorbs moisture, the damping rod provides cushioning and protection, the support feet and stretching plate structure ensures support, and the locking assembly facilitates easy opening.

Benefits of technology

It improves the cushioning and protection of the packaging box, reduces the packaging volume, enhances space utilization, and supports secondary use and customized services.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a food packaging box with a buffering structure, which belongs to the technical field of food packaging, aims to solve the problems that the packaging box is not good enough in buffering effect and is easy to collapse under the conditions of moisture and the like, and comprises a main box body, the main box body is wrapped with a sealing strip assembly, and supporting foot plates and stretching plates are installed at the four corners of the interior of the main box body correspondingly. A buffer structure is mounted in the main box body; three supporting foot plates form a group, and a stretching plate is fixedly connected between the upper portion and the lower portion of each group of supporting foot plates and penetrates through the supporting foot plate in the middle. When the main box body shrinks towards the middle after being impacted, the main box body presses the buffer rods to move towards the middle, the influence of the damping rods and springs is reduced, the moving speed is reduced, the buffer protection effect is achieved, the drying plates adsorb water vapor, expand and gradually expand outwards, and the supporting foot plates and the stretching plates are pulled to extend outwards to be straightened, so that the protection effect is ensured. The main box body is prevented from being soaked and collapsed, and the food protection effect is improved.
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Description

Technical Field

[0001] This utility model belongs to the field of food packaging technology, and more specifically, it relates to a food packaging box with a cushioning structure. Background Technology

[0002] In the food packaging industry, packaging boxes are crucial tools for protecting food from external environmental influences and ensuring that food maintains its original quality and freshness during transportation and storage. Their design and material selection are therefore of paramount importance. Traditional food packaging boxes mostly use single-layer or multi-layer cardboard structures, employing foam plastics, bubble wrap, and other materials as cushioning agents. For food packaging transported over long distances or under harsh conditions (such as high temperatures, humidity, and bumps), their protective performance is often insufficient, and their cushioning effect is limited by the type and thickness of the materials. Furthermore, the use of these fillers increases the volume and weight of the packaging, hindering the control of transportation and storage costs. When unpacking, many layers need to be removed, often resulting in damage to the box and making it difficult to reuse. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a food packaging box with a cushioning structure, which solves the problems of insufficient cushioning effect and easy collapse of the packaging box under humid conditions; excessively thick packaging leading to reduced space utilization and difficulty in providing customized services to increase market share; and inconvenient packaging disassembly and reuse.

[0004] This utility model provides a food packaging box with a cushioning structure, achieved by the following specific technical means: A food packaging box with a cushioning structure includes: a main box body; the main box body is wrapped with a sealing strip assembly, and support feet and stretch plates are respectively installed at the four corners of the main box body; a cushioning structure is installed inside the main box body; the support feet are in groups of three, and the stretch plates are fixedly connected between the upper and lower parts of each group of support feet, with the stretch plates passing through the middle support feet; the locking assembly includes a plug-in frame and a pull rod, the rear end of the plug-in frame is welded with a plug rod, the plug rod is inserted into a small round hole in the sealing strip and the receiving strip, the round rod of the pull rod is inserted into a vertical round hole opened at the bottom of the receiving strip, the pull rod is inserted into the plug-in frame, and the middle part of the pull rod is provided with an upward pointing arrow-shaped diagonal bar.

[0005] Furthermore, the support foot plate is a right-angled structural plate with drying plates fixedly bonded to both ends. The drying plates are snapped into the grooves at the four corners of the main box, and a rectangular groove is formed inside the middle support foot plate.

[0006] Furthermore, the sealing strip assembly includes a fastening strip and a receiving strip. The bottom of the front and rear sides of the fastening strip is provided with a plug plate. The plug plate has two small round holes inside and is plugged into the inside of the receiving strip. The front and rear upright plates of the receiving strip have two small round holes inside. The small round holes are the same size as the small round holes in the plug plate at the bottom of the fastening strip.

[0007] Furthermore, the buffer structure consists of a fixed tube and buffer rods. The fixed tube is fixedly connected inside the main box, and two buffer rods are snapped into the inside of the fixed tube. A damping rod is fixedly connected to one side of the opposite side of the two buffer rods, and the two damping rods are connected by a spring.

[0008] Furthermore, a lid is fastened to the top surface of the main box, a rectangular groove is formed on the bottom surface of the main box, and a rectangular groove is formed on the top surface of the lid. The depth of the rectangular groove is the same as the thickness of the sealing strip assembly.

[0009] This utility model has at least the following beneficial effects:

[0010] During use, when the main box is impacted, it contracts towards the center, which in turn presses the buffer rod to move towards the center. Simultaneously, it drives the damping rod to move towards the center. Due to the influence of the damping rod and the spring, the moving speed is slowed down, thus achieving a buffering and protective effect. The drying plate can absorb moisture and expand, gradually moving outward. During this process, it pulls the support foot plate outward and straightens it. The upper and lower sides of the stretching plate are slightly tilted outward and straightened to ensure the protective effect and prevent the main box from becoming wet and collapsing, thereby improving the protection effect for food.

[0011] In addition, the outer surface of the sealing strip assembly is flush with the outer surface of the main box and the lid, which reduces the volume of the outer surface of the packaging box and improves the space utilization of the packaging box. The outer surface of the fastening strip and the receiving strip can be used to display information on the food packaging or add additional services such as logo customization, thereby increasing market share and packaging uniqueness.

[0012] In addition, the arrow shape formed by the diagonal bars can provide consumers with a directional indicator when opening the packaging, prompting users to pull the lever upwards to remove the connector, thus completing the opening of the packaging and allowing the packaging box to be reused. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the main box body and the lid of this utility model after they are fastened together.

[0014] Figure 2 This is a schematic diagram of the connection structure between the main box body and the fastening strip of this utility model.

[0015] Figure 3 This is a schematic diagram of the unfolded structure of the sealing strip assembly of this utility model.

[0016] Figure 4 This is a schematic diagram of the installation position of the buffer structure of this utility model.

[0017] Figure 5 This is a structural schematic diagram of the support foot plate and tension plate of this utility model.

[0018] Figure 6 This is a cross-sectional structural diagram of the fixed tube of this utility model.

[0019] Figure 7 This is a utility model Figure 3 A magnified structural diagram of point A in the middle.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0021] 1. Main box body; 101. Box lid;

[0022] 2. Sealing strip assembly; 21. Fastening seal; 22. Receiving strip;

[0023] 3. Support feet; 301. Drying plate;

[0024] 4. Stretching plate;

[0025] 5. Buffer structure; 51. Fixed tube; 52. Buffer rod; 5201. Damping rod;

[0026] 6. Locking assembly; 61. Connector bracket; 6101. Insert rod; 62. Pull rod. Detailed Implementation

[0027] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0028] Example:

[0029] As attached Figure 1 To be continued Figure 7 As shown:

[0030] This utility model provides a food packaging box with a cushioning structure, including a main box body 1; the main box body 1 is wrapped with a sealing strip assembly 2, and support feet 3 and tension plates 4 are respectively installed at the four corners inside the main box body 1; a cushioning structure 5 is installed inside the main box body 1; the support feet 3 are in groups of three, and the tension plates 4 are fixedly connected between the upper and lower parts of each group of support feet 3, and the tension plates 4 pass through the middle support feet 3.

[0031] As attached Figure 1 and attached Figure 3As shown, the sealing strip assembly 2 includes a snap-on sealing strip 21 and a receiving strip 22. The bottom of the front and rear sides of the snap-on sealing strip 21 is provided with a plug plate. The plug plate has two small round holes inside and is inserted into the inside of the receiving strip 22. The front and rear upright plates of the receiving strip 22 have two small round holes inside. The small round holes are the same size as the small round holes in the plug plate at the bottom of the snap-on sealing strip 21. After the receiving strip 22 is placed into the bottom rectangular groove of the main box body 1, the snap-on sealing strip 21 is inserted into the receiving strip 22, and the box cover 101 can be fastened.

[0032] As attached Figure 5 As shown, the support foot plate 3 is a right-angled structural plate with drying plates 301 fixedly bonded to both ends. The drying plates 301 are snapped into the grooves at the four corners of the main box 1, and the interior of the middle support foot plate 3 has a rectangular groove. When the main box 1 is wetted by fresh fruits or other foods with high humidity due to cold chain transportation, the drying plates 301 can absorb the moisture and expand and gradually move outward. During this process, the support foot plate 3 will be pulled outward and straightened, which can further strengthen the straightness of the support foot plate 3. The middle support foot plate 3 fixes the position of the tension plate 4, so that it can be slightly tilted outward and straightened during the outward expansion of the upper and lower support foot plates 3, so as to ensure the protective effect and prevent the main box 1 from being wetted and collapsing, thus improving the protection effect of the food.

[0033] As attached Figure 1 As shown, a lid 101 is fastened to the top surface of the main box 1. A rectangular groove is formed on the bottom surface of the main box 1 and a rectangular groove is formed on the top surface of the lid 101. The depth of the rectangular groove is the same as the thickness of the sealing strip assembly 2. After the sealing strip assembly 2 is snapped into the rectangular groove, the outer surface of the sealing strip assembly 2 is flush with the outer surfaces of the main box 1 and the lid 101, thereby reducing the volume of the outer surface of the packaging box and improving the space utilization of the packaging box.

[0034] As attached Figure 7 As shown, the locking assembly 6 includes a connector 61 and a pull rod 62. A rod 6101 is welded to the rear end of the connector 61. The rod 6101 is inserted into the small round holes in the sealing strip 21 and the receiving strip 22. The round rod of the pull rod 62 is inserted into the vertical round hole opened at the bottom of the receiving strip 22. The pull rod 62 is inserted into the connector 61, and an upward-pointing arrow-shaped slant is provided in the middle of the pull rod 62. The arrow shape formed by the slant can help consumers have a directional indication when opening the packaging, prompting the user to take out the pull rod 62 upwards, so that the connector 61 can be taken out and the packaging can be opened.

[0035] As attached Figure 4 and attached Figure 6As shown, the buffer structure 5 consists of a fixed tube 51 and buffer rods 52. The fixed tube 51 is fixedly connected to the inside of the main box 1. Two buffer rods 52 are snapped into the inside of the fixed tube 51. A damping rod 5201 is fixedly connected to one side of the opposite side of the two buffer rods 52, and the two damping rods 5201 are connected by a spring. When impacted, the main box 1 contracts inward, which will press the buffer rods 52 to move inward, and simultaneously drive the damping rods 5201 to move inward. Due to the frictional resistance between the damping rods 5201 and the fixed tube 51, the moving speed will be slowed down. At the same time, the compression spring will further slow down the moving speed, thus playing a buffering and protective role. After returning to normal, the spring maintains the pushing trend outward, supporting the buffer rods 52 outward, which can ensure the support effect of the main box 1.

[0036] The specific usage and function of this embodiment are as follows:

[0037] In this utility model, during specific use, the receiving strip 22 is first placed into the rectangular groove at the bottom of the main box 1, and then the box cover 101 is fastened to the top surface of the main box 1. Then, the sealing strip 21 is inserted into the receiving strip 22. At this time, the sealing strip 21 is aligned with the small round hole in the receiving strip 22. The insert rod 6101 is inserted into the small round hole in the sealing strip 21 and the receiving strip 22. The round rod of the pull rod 62 is inserted into the vertical round hole opened at the bottom of the receiving strip 22, thus completing the packaging.

[0038] When impacted, the main housing 1 contracts towards the center, which in turn presses the buffer rod 52 to move towards the center. Simultaneously, the damping rod 5201 moves towards the center. Due to the frictional resistance between the damping rod 5201 and the fixed tube 51, the moving speed is slowed down. At the same time, the compression spring further slows down the moving speed, thus providing a buffering and protective effect. After returning to normal, the spring maintains a pushing trend outward, supporting the buffer rod 52 outward, which ensures the support effect of the main housing 1.

Claims

1. A food packaging box with a buffering structure, comprising a main box body (1) and a locking assembly (6); characterized in that, The main box (1) is wrapped with a sealing strip assembly (2) on the outside. Support feet (3) and tension plates (4) are installed at the four corners of the main box (1) respectively. A buffer structure (5) is installed inside the main box (1). The sealing strip assembly (2) includes a snap-on sealing strip (21) and a receiving strip (22). The snap-on sealing strip (21) is inserted into the inside of the receiving strip (22). The support feet (3) are in groups of three. The tension plates (4) are fixedly connected between the upper and lower parts of each group of support feet (3), and the tension plates (4) pass through the middle support feet (3). The buffer structure (5) consists of a fixing tube (51) and a buffer rod (52). The fixing tube (51) is fixedly connected inside the main box (1), and two buffer rods (52) are snapped into the inside of the fixing tube (51). The locking assembly (6) includes a plug-in frame (61) and a pull rod (62). The rear end of the plug-in frame (61) is welded with a plug rod (6101). The plug rod (6101) is inserted into the small round holes in the buckle strip (21) and the receiving strip (22). The round rod of the pull rod (62) is inserted into the vertical round hole opened at the bottom of the receiving strip (22). The pull rod (62) is inserted into the plug-in frame (61), and the middle part of the pull rod (62) is provided with an upward-pointing arrow-shaped slant.

2. A food packaging box with a cushioning structure according to claim 1, characterized in that, The top surface of the main box (1) is fitted with a box cover (101), the bottom surface of the main box (1) is provided with a rectangular groove, the top surface of the box cover (101) is provided with a rectangular groove, and the depth of the rectangular groove is the same as the thickness of the sealing strip assembly (2).

3. A food packaging box with a cushioning structure according to claim 2, characterized in that, The bottom of the front and rear sides of the buckle strip (21) is provided with a plug plate. The plug plate has two small round holes inside and is plugged into the inside of the support strip (22). The front and rear upright plates of the support strip (22) have two small round holes inside. The small round holes are the same size as the small round holes in the plug plate at the bottom of the buckle strip (21).

4. A food packaging box with a cushioning structure according to claim 1, characterized in that, The support foot plate (3) is a right-angled structural plate with a drying plate (301) fixedly attached to both ends. The drying plate (301) is snapped into the grooves at the four corners of the main box (1), and a rectangular groove is opened inside the support foot plate (3) in the middle.

5. A food packaging box with a cushioning structure according to claim 1, characterized in that, A damping rod (5201) is fixedly connected to one side of the opposite face of the two buffer rods (52), and the two damping rods (5201) are connected by a spring.