Lightweight airtight packaging box

Abstract

The utility model discloses a light-weight airtight packaging box which aims to solve the technical problems that in the prior art, a lower box cover and a box body are rotationally opened and closed, so that the sealing performance of the box cover and the box body is poor, a gap exists between the box cover and the box body, the sealing performance is possibly affected, and the airtightness is insufficient. The packaging box comprises a box body, a box cover is arranged at the top of the box body, a rectangular fixing plate is fixed to the top of one side of the box body, a U-shaped mounting block is fixed to one side of the box cover, a rectangular limiting plate is rotationally connected into the U-shaped mounting block, and a first limiting mechanism used for limiting movement of the rectangular limiting plate is arranged in the rectangular fixing plate; the rectangular mounting box is arranged on the other side of the box body, the box body can be vertically attached to the box cover, gaps between the box body and the box cover are prevented, the mounting strength is improved, and therefore the air tightness of the packaging box is improved, and the packaging box is higher in material and strength and better in air tightness performance.

Description

Technical Field

[0001] The utility model belongs to the field of packaging boxes, and particularly relates to a lightweight airtight packaging box. Background Art

[0002] In the modern packaging industry, airtight packaging boxes are widely used to protect items from the external environment, especially during transportation and storage. The main function of airtight packaging boxes is to prevent air, moisture, and other external factors from entering the box, thereby ensuring the quality and safety of the items inside. Therefore, improving the airtightness of packaging boxes is a key consideration in design and production.

[0003] Currently, the design of many airtight packaging boxes relies on traditional sealing structures, which usually include components such as the box body, box cover and sealing strips. In existing airtight packaging box designs, the seal between the box cover and the box body is usually achieved by the sealing strip, which can be made of rubber, foam or other elastic materials. The main function of these materials is to fill the gap between the box body and the box cover to achieve airtightness.

[0004] The existing box lid and box body are opened and closed by rotating, which makes the sealing performance of the box lid and the box body poor, resulting in a gap between the box lid and the box body. The sealing performance may be affected, resulting in insufficient airtightness. Therefore, a lightweight airtight packaging box is designed to change the above technical defects. Utility Model Content

[0005] (1) Technical problems to be solved

[0006] In response to the shortcomings of the existing technology, the purpose of the present invention is to provide a lightweight airtight packaging box, which aims to solve the technical problem in the existing technology that the box lid and the box body are opened and closed by rotating, resulting in poor sealing performance between the box lid and the box body, causing a gap between the box lid and the box body, which may affect the sealing performance and lead to insufficient airtightness.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a lightweight airtight packaging box, which includes a box body, a box cover is provided on the top of the box body, a rectangular fixing plate is fixed to the top of one side of the box body, a U-shaped mounting block is fixed to one side of the box cover, a rectangular limiting plate is rotatably connected to the inside of the U-shaped mounting block, and a first limiting mechanism is provided inside the rectangular fixing plate for limiting the movement of the rectangular limiting plate;

[0009] A rectangular installation box is provided on the other side of the box body, an L-shaped rotating column is fixed on the other side of the box cover, and a second limiting mechanism for limiting the rotation of the L-shaped rotating column is provided inside the rectangular installation box.

[0010] Preferably, the interior of the box body and the box cover are both fixed with internal reinforcement plates, and two foam filling layers are also provided inside the box body and the box cover, and the two foam filling layers are located on both sides of the internal reinforcement plate. A sealing embedding groove is fixed on the top of the box body, and a sealing strip is fixed on the bottom of the box cover, and the sealing strip is gap-fitted with the sealing embedding groove.

[0011] Preferably, the sealing strip and the sealing embedding groove are made of EPDM rubber;

[0012] The material of the internal reinforcement plate is carbon fiber.

[0013] Furthermore, the first limiting mechanism includes two transverse light rods, the top and bottom of the rectangular fixed plate are slidably connected to the transverse light rods, one end of the transverse light rod is fixed with a transverse pull plate, and a transverse rigid spring is arranged between the transverse pull plate and the rectangular fixed plate and on the outside of the transverse light rod.

[0014] Furthermore, a circular limiting groove is provided inside the rectangular limiting plate, and the transverse polished rod is located inside the circular limiting groove and is fitted with the rectangular limiting plate through a clearance in the circular limiting groove.

[0015] Furthermore, the second limiting mechanism includes a vertical sliding plate, the vertical sliding plate is slidably connected to the inside of the rectangular installation box, a vertical U-shaped column is fixed to the top of the vertical sliding plate, the top of the vertical U-shaped column is rotatably connected to the L-shaped rotating column through a pin shaft, and a plurality of vertical rigid springs are fixed to the bottom of the vertical sliding plate.

[0016] Furthermore, a vertical through slot is provided inside the rectangular installation box, and the vertical U-shaped column is located inside the vertical through slot and is slidably connected to the rectangular installation box via the vertical through slot.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] Through a series of designs, the utility model enables the box body to be vertically fitted with the box cover, preventing gaps between the box body and the box cover, improving the installation strength, and thus improving the airtightness of the packaging box. In addition, the material of the packaging box has higher strength and better airtightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a structural diagram of the rectangular installation box and the L-shaped rotating column of the utility model;

[0022] Figure 3This is a schematic diagram of the structure inside the rectangular fixed plate of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure inside the rectangular installation box of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the box body and the interior of the box cover of the utility model;

[0025] Figure 6 This is a structural diagram of the sealing strip and the sealing embedding groove of the utility model.

[0026] The markings in the accompanying drawings are: 1. Box body; 2. Box cover; 3. Rectangular fixing plate; 4. Rectangular limiting plate; 5. U-shaped mounting block; 6. Rectangular mounting box; 7. L-shaped rotating column; 8. Horizontal light rod; 9. Horizontal pull plate; 10. Horizontal rigid spring; 11. Vertical U-shaped column; 12. Vertical sliding plate; 13. Vertical rigid spring; 14. Internal reinforcement plate; 15. Foam filling layer; 16. Sealing strip; 17. Sealing embedded groove. DETAILED DESCRIPTION

[0027] This embodiment is a lightweight airtight packaging box, and its structural diagram is as follows Figures 1-6 As shown, the packaging box includes a box body 1, a box cover 2 is provided on the top of the box body 1, a rectangular fixing plate 3 is fixed to the top of one side of the box body 1, a U-shaped mounting block 5 is fixed to one side of the box cover 2, a rectangular limiting plate 4 is rotatably connected to the inside of the U-shaped mounting block 5, and a first limiting mechanism for limiting the movement of the rectangular limiting plate 4 is provided inside the rectangular fixing plate 3;

[0028] A rectangular mounting box 6 is provided on the other side of the box body 1, an L-shaped rotating column 7 is fixed on the other side of the box cover 2, and a second limiting mechanism for limiting the rotation of the L-shaped rotating column 7 is provided inside the rectangular mounting box 6;

[0029] An internal reinforcement plate 14 is fixed to the interior of the box body 1 and the box cover 2. Two foam filling layers 15 are also provided inside the box body 1 and the box cover 2. The two foam filling layers 15 are located on both sides of the internal reinforcement plate 14. A sealing embedding groove 17 is fixed to the top of the box body 1, and a sealing strip 16 is fixed to the bottom of the box cover 2. The sealing strip 16 is loosely matched with the sealing embedding groove 17.

[0030] The sealing strip 16 and the sealing embedding groove 17 are both made of EPDM, which is a synthetic rubber with excellent resistance to ozone, ultraviolet rays and oxides. It is suitable for use outdoors or in harsh environments and maintains good elasticity in low-temperature environments. It has excellent elasticity and sealing properties.

[0031] The internal reinforcement plate 14 is made of carbon fiber, which is a high-strength, high-modulus fiber material composed of carbon atoms arranged in a graphite-like structure. Carbon fiber is very strong and lightweight, which can improve the overall strength of the box body 1 and the box cover 2 and contribute to the lightweight design of the box body 1 and the box cover 2.

[0032] The first limiting mechanism includes two transverse polished rods 8, which are slidably connected to the top and bottom of the rectangular fixed plate 3. A transverse pull plate 9 is fixed to one end of the transverse polished rod 8. A transverse rigid spring 10 is provided between the transverse pull plate 9 and the rectangular fixed plate 3 and on the outside of the transverse polished rod 8.

[0033] A circular limiting groove is provided inside the rectangular limiting plate 4. The transverse polished rod 8 is located inside the circular limiting groove and is fitted with the rectangular limiting plate 4 through a clearance therein. The circular limiting groove allows the transverse polished rod 8 to enter the interior of the rectangular limiting plate 4 and restrict the rectangular limiting plate 4 from moving inside the rectangular fixed plate 3.

[0034] Here, the transverse pull plate 9 is pulled in a direction away from the rectangular fixed plate 3. The pulling of the transverse pull plate 9 enables the transverse rod 8 to slide transversely inside the rectangular fixed plate 3 and the transverse rod 8 to slide transversely inside the rectangular limiting plate 4. When the transverse rod 8 moves out of the rectangular limiting plate 4, the restriction of the transverse rod 8 on the rectangular limiting plate 4 can be released, thereby allowing the rectangular limiting plate 4 to move.

[0035] The second limiting mechanism includes a vertical sliding plate 12, which is slidably connected to the interior of the rectangular installation box 6. A vertical U-shaped column 11 is fixed to the top of the vertical sliding plate 12. The top of the vertical U-shaped column 11 is rotatably connected to the L-shaped rotating column 7 via a pin. A plurality of vertical rigid springs 13 are fixed to the bottom of the vertical sliding plate 12;

[0036] A vertical through-slot is provided inside the rectangular installation box 6. The vertical U-shaped column 11 is located inside the vertical through-slot and is slidably connected to the rectangular installation box 6 through the vertical through-slot. The vertical through-slot enables the vertical U-shaped column 11 to slide vertically inside the rectangular installation box 6.

[0037] Here, by setting the vertical rigid spring 13, the vertical sliding plate 12 can slide vertically inside the rectangular installation box 6. When the vertical U-shaped column 11 moves out of the rectangular installation box 6, the restriction of the rectangular installation box 6 on the L-shaped rotating column 7 can be released to facilitate the rotation of the box cover 2.

[0038] Working principle: When using the packaging box of the present technical solution, the transverse pull plate 9 is pulled in the direction away from the rectangular fixed plate 3. The pulling of the transverse pull plate 9 enables the transverse light rod 8 to slide transversely inside the rectangular fixed plate 3 and the transverse light rod 8 to slide transversely inside the rectangular limiting plate 4. When the transverse light rod 8 moves out of the rectangular limiting plate 4, the restriction of the transverse light rod 8 on the rectangular limiting plate 4 can be released, thereby allowing the rectangular limiting plate 4 to move;

[0039] By setting the vertical rigid spring 13, the vertical sliding plate 12 can slide vertically inside the rectangular installation box 6. When the vertical U-shaped column 11 moves out of the rectangular installation box 6, the restriction of the rectangular installation box 6 on the L-shaped rotating column 7 can be released to facilitate the rotation of the box cover 2. When the L-shaped rotating column 7 is located inside the rectangular installation box 6, the rotation of the L-shaped rotating column 7 can be restricted, thereby preventing the box cover 2 from rotating, so that the box cover 2 can fit tightly with the box body 1, preventing air from entering the interior of the box body 1, and improving the sealing performance of the device.

[0040] All technical features in this embodiment can be freely combined according to actual needs.

[0041] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A lightweight airtight packaging box, characterized by: The invention comprises a box body (1), a box cover (2) is provided on the top of the box body (1), a rectangular fixing plate (3) is fixed on the top of one side of the box body (1), a U-shaped mounting block (5) is fixed on one side of the box cover (2), a rectangular limiting plate (4) is rotatably connected inside the U-shaped mounting block (5), and a first limiting mechanism for limiting the movement of the rectangular limiting plate (4) is provided inside the rectangular fixing plate (3); A rectangular installation box (6) is provided on the other side of the box body (1), an L-shaped rotating column (7) is fixed on the other side of the box cover (2), and a second limiting mechanism for limiting the rotation of the L-shaped rotating column (7) is provided inside the rectangular installation box (6).

2. A lightweight airtight packaging box according to claim 1, characterized in that: An internal reinforcement plate (14) is fixed inside the box body (1) and the box cover (2), and two foam filling layers (15) are also provided inside the box body (1) and the box cover (2), and the two foam filling layers (15) are located on both sides of the internal reinforcement plate (14). A sealing embedding groove (17) is fixed on the top of the box body (1), and a sealing strip (16) is fixed on the bottom of the box cover (2), and the sealing strip (16) is clearance-matched with the sealing embedding groove (17).

3. The lightweight airtight packaging box according to claim 2, characterized in that: The sealing strip (16) and the sealing embedding groove (17) are both made of ethylene propylene rubber; the internal reinforcement plate (14) is made of carbon fiber.

4. The lightweight airtight packaging box according to claim 1, characterized in that: The first limiting mechanism comprises two transverse light rods (8), the top and bottom of the interior of the rectangular fixed plate (3) are both slidably connected to the transverse light rods (8), one end of the transverse light rod (8) is fixed with a transverse pull plate (9), and a transverse rigid spring (10) is provided between the transverse pull plate (9) and the rectangular fixed plate (3) and on the outside of the transverse light rod (8).

5. The lightweight airtight packaging box according to claim 4, characterized in that: A circular limiting groove is provided inside the rectangular limiting plate (4), and the transverse light rod (8) is located inside the circular limiting groove and is fitted with the rectangular limiting plate (4) through a clearance in the circular limiting groove.

6. The lightweight airtight packaging box according to claim 1, characterized in that: The second limiting mechanism includes a vertical sliding plate (12), the interior of the rectangular installation box (6) is slidably connected to the vertical sliding plate (12), a vertical U-shaped column (11) is fixed to the top of the vertical sliding plate (12), the top of the vertical U-shaped column (11) is rotatably connected to the L-shaped rotating column (7) via a pin shaft, and a plurality of vertical rigid springs (13) are fixed to the bottom of the vertical sliding plate (12).

7. The lightweight airtight packaging box according to claim 6, characterized in that: A vertical through slot is provided inside the rectangular installation box (6), and the vertical U-shaped column (11) is located inside the vertical through slot and is slidably connected to the rectangular installation box (6) via the vertical through slot.

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