A packaging carton having a connecting structure

Abstract

The utility model discloses a packing carton with connecting structure relates to packing carton technical field, including outer box, install inside the outer box with inner box, be equipped with support frame between the outer box and inner box, the top surface of support frame is provided with two rotating sleeve of symmetrical rotation connection, the utility model discloses when using, through two carding post carding into the fixed sleeve of corresponding position, make two apron can no longer turn inwards again, strengthen the connection between two aprons, improve the compression resistance of apron, avoid apron and press inwards concave, and through the shape protection of support column and reinforcing rib to outer box, strengthen the compression resistance of outer box, make it not easy to deform, even if is subjected to greater external force, and the outer box can also keep structural integrity, provides reliable protection for article.

Description

Technical Field

[0001] This utility model relates to the field of packaging paper box technology, and in particular to a packaging paper box with a connecting structure. Background Technology

[0002] Paper boxes are the most widely used packaging products. Depending on the materials used, they come in various specifications and models and are usually used as wrapping materials for goods or as outer protective layers for items.

[0003] Existing cardboard boxes typically have two lids connected by a crease and rotation at the top, but there is no connecting structure between the two lids. They are usually connected together with tape. When users open the carton, they need to tear the tape, which can easily cause the lids to tear or leave adhesive residue, affecting reuse. Furthermore, the bottom of the lids connected only by tape does not have a support mechanism. When the carton is stacked or subjected to pressure, the two lids are prone to dents, which may even damage the contents. In view of this, this application proposes a packaging cardboard box with a connecting structure. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a packaging cardboard box with a connecting structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A packaging box with a connecting structure includes an outer box body, an inner box body installed inside the outer box body, a support frame between the outer box body and the inner box body, two rotating sleeves symmetrically rotatably connected to the top surface of the support frame, two fixed sleeves and telescopic cylinders symmetrically installed on the outer sides of the two rotating sleeves respectively, a locking pin elastically slidably connected inside each telescopic cylinder, and each locking pin is locked inside the fixed sleeve, two cover plates rotatably connected to the top surface of the outer box body through indentation, and the bottom surface of each cover plate is bonded to the top surface of the corresponding rotating sleeve, one of the cover plates has a limiting mechanism on its top surface, and the limiting mechanism restricts the sliding position of multiple locking pins.

[0007] Preferably, the support frame includes four support columns, which are arranged diagonally at the four inner corners between the outer and inner boxes, and multiple reinforcing ribs are fixedly installed between each pair of adjacent support columns.

[0008] Preferably, a rotating shaft is rotatably connected between each pair of corresponding support columns, and each rotating shaft is fixedly installed inside the rotating sleeve.

[0009] Preferably, a spring is installed between the inner wall of each telescopic cylinder and the outer side of the corresponding locking post, and a push plate is fixedly installed on the outer side of each locking post.

[0010] Preferably, the limiting mechanism includes a groove, and the groove is opened on the top surface of the cover plate corresponding to the position. The two push plates pass through the cover plate corresponding to the position and are rotatably connected to the crankshaft. An L-shaped card plate is installed on the top surface of the groove.

[0011] Preferably, a support base is fixedly installed on the bottom surface of the outer casing, and hand-held slots are respectively opened on the two outer sides of the outer casing.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model uses a fixed sleeve, telescopic cylinder, locking pins, and limiting mechanism to enable the cover plate to flip, which in turn drives the fixed sleeve and telescopic cylinder on the rotating sleeve to flip. The user can manually release the limiting mechanism of the two locking pins, so that the two locking pins can be locked into the fixed sleeves in the corresponding positions, preventing the two cover plates from flipping inward, strengthening the connection between the two cover plates, improving the compressive strength of the cover plates, and preventing the cover plates from being crushed inward.

[0014] 2. This utility model uses support columns, reinforcing ribs, and inner boxes to place items inside the inner box. The support columns and reinforcing ribs protect the shape of the outer box, enhance its compressive strength, and prevent it from deforming. Even under large external forces, the outer box can maintain its structural integrity, providing reliable protection for the items. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a packaging paper box with a connecting structure proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the inner box installation structure of a packaging paper box with a connecting structure proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the mounting structure of the rotating shaft and rotating sleeve of a packaging paper box with a connecting structure proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of a spring mounting structure for a packaging cardboard box with a connecting structure proposed in this utility model;

[0019] Figure 5 for Figure 1 Enlarged view of point A.

[0020] In the diagram: 1. Outer casing; 2. Support base; 3. Hand grip slot; 4. Cover plate; 5. Inner casing; 6. Support column; 7. Reinforcing rib; 8. Rotating shaft; 9. Rotating sleeve; 10. Fixed sleeve; 11. Telescopic cylinder; 12. Locking post; 13. Spring; 14. Push plate; 15. Crankshaft; 16. L-shaped locking plate; 17. Groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] This utility model provides a technical solution: such as Figure 1-5 As shown, a packaging box with a connecting structure includes an outer box 1, an inner box 5 installed inside the outer box 1, and a support frame between the outer box 1 and the inner box 5. Two rotating sleeves 9 are symmetrically rotatably connected to the top surface of the support frame to enhance the pressure resistance of the device. Two fixed sleeves 10 and telescopic cylinders 11 are symmetrically installed on the outer sides of the two rotating sleeves 9, respectively. Each telescopic cylinder 11 has a locking post 12 elastically slidably connected inside, and each locking post 12 is locked inside the fixed sleeve 10. By locking the locking post 12 in the fixed sleeve 10, the two cover plates 4 are connected together, preventing them from rotating downwards, thereby improving the pressure resistance of the cover plates 4 and preventing the cover plates 4 from collapsing inwards when stacked or under pressure. The top surface of the outer box 1 is rotatably connected to the two cover plates 4 through an indentation, and the bottom surface of each cover plate 4 is bonded to the top surface of the corresponding rotating sleeve 9. One of the cover plates 4 has a limiting mechanism on its top surface, and the limiting mechanism restricts the sliding position of multiple locking posts 12.

[0023] It should be noted that each rotating sleeve 9 can rotate inward, but can only rotate 90 degrees after rotating inward. The bottom surface of each rotating sleeve 9 is set as a plane. When the rotating sleeve 9 rotates inward by 90 degrees, the bottom plane of the rotating sleeve 9 contacts the top surface of the inner box 5, thereby restricting the rotation of the rotating sleeve 9.

[0024] Furthermore, the support frame includes four support columns 6, which are arranged diagonally at the four inner corners between the outer box 1 and the inner box 5. Multiple reinforcing ribs 7 are fixedly installed between each pair of adjacent support columns 6. The reinforcing ribs 7 can enhance the tight connection between the four support columns 6, making the support columns 6 less prone to tilting and further enhancing the compressive strength of the device.

[0025] Furthermore, a rotating shaft 8 is rotatably connected between each pair of corresponding support columns 6, and each rotating shaft 8 is fixedly installed inside the rotating sleeve 9.

[0026] Furthermore, a spring 13 is installed between the inner wall of each telescopic cylinder 11 and the outer side of the corresponding locking post 12, and a push plate 14 is fixedly installed on the outer side of each locking post 12. The spring 13 allows each locking post 12 to slide outward.

[0027] Furthermore, the limiting mechanism includes a groove 17, which is formed on the top surface of the cover plate 4 at the corresponding position. Two push plates 14 pass through the cover plate 4 at the corresponding position and are rotatably connected to a crankshaft 15. An L-shaped clamping plate 16 is installed on the top surface of the groove 17 and is clamped in the L-shaped clamping plate 16 by the crankshaft 15. As the spring 13 pushes the clamping post 12 to slide outward, it pushes the push plate 14 to slide outward, and the crankshaft 15 limits the push plate 14, thereby restricting the sliding position of the clamping post 12.

[0028] Furthermore, a support base 2 is fixedly installed on the bottom surface of the outer casing 1 to reduce the impact of ground moisture on the outer casing 1. Handhold slots 3 are provided on both outer sides of the outer casing 1 to facilitate users to hold and move the device.

[0029] This utility model provides a packaging box with a connecting structure. The specific working principle is as follows: The user can place items inside the inner box 5, and then flip the two cover plates 4 inwards. Since each cover plate 4 is bonded to a corresponding rotating sleeve 9, both rotating sleeves 9 can rotate inwards. When each cover plate 4 rotates to its limit position, each fixed sleeve 10 corresponds to the position of the telescopic cylinder 11. Then, the user can pull the crankshaft 15 and rotate it, thereby disengaging the crankshaft 15 from the L-shaped retaining plate 16, releasing the restriction on the push plate 14. Then, the locking pin 12 is pushed into the corresponding fixed sleeve 10 by the elastic force of the spring 13, completing the connection between the two cover plates 4. This prevents the fixed sleeve 10 and the telescopic cylinder 11 from flipping inward, thereby improving the pressure resistance of the two cover plates 4 and preventing them from collapsing inward. At the same time, when it is necessary to open the two cover plates 4, the user can pull the crankshaft 15 and lock it in the L-shaped locking plate 16, thereby resetting each locking pin 12 and retracting it back into the telescopic cylinder 11, and squeezing the spring 13, thereby opening the two cover plates 4.

[0030] Furthermore, the device is equipped with four support columns 6 and multiple sets of reinforcing ribs 7. Each support column 6 is connected to the others by the multiple sets of reinforcing ribs 7, which prevents each support column 6 from tilting easily, thereby enhancing the compressive strength of the outer casing 1.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A packaging cardboard box with a connecting structure, comprising an outer box body (1), characterized in that, An inner box (5) is installed inside the outer box (1). A support frame is provided between the outer box (1) and the inner box (5). Two rotating sleeves (9) are symmetrically rotatably connected to the top surface of the support frame. Two fixed sleeves (10) and telescopic cylinders (11) are symmetrically installed on the outer sides of the two rotating sleeves (9). Each telescopic cylinder (11) is elastically slidably connected to a locking post (12), and each locking post (12) is locked inside the fixed sleeve (10). Two cover plates (4) are rotatably connected to the top surface of the outer box (1) through indentation. The bottom surface of each cover plate (4) is bonded to the top surface of the rotating sleeve (9) corresponding to the position. A limiting mechanism is provided on the top surface of one of the cover plates (4), and the limiting mechanism restricts the sliding position of multiple locking posts (12).

2. A packaging cardboard box with a connecting structure according to claim 1, characterized in that, The support frame includes four support columns (6), and the four support columns (6) are arranged diagonally at the four inner corners between the outer box (1) and the inner box (5). Multiple reinforcing ribs (7) are fixedly installed between each pair of adjacent support columns (6).

3. A packaging cardboard box with a connecting structure according to claim 2, characterized in that, A rotating shaft (8) is rotatably connected between each pair of corresponding support columns (6), and each rotating shaft (8) is fixedly installed inside the rotating sleeve (9).

4. A packaging cardboard box with a connecting structure according to claim 3, characterized in that, A spring (13) is installed between the inner wall of each telescopic cylinder (11) and the outer side of the corresponding locking post (12), and a push plate (14) is fixedly installed on the outer side of each locking post (12).

5. A packaging cardboard box with a connecting structure according to claim 4, characterized in that, The limiting mechanism includes a groove (17), and the groove (17) is opened on the top surface of the cover plate (4) corresponding to the position. The two push plates (14) pass through the cover plate (4) corresponding to the position and are rotatably connected to the crankshaft (15). An L-shaped card plate (16) is installed on the top surface of the groove (17).

6. A packaging cardboard box with a connecting structure according to claim 5, characterized in that, A support base (2) is fixedly installed on the bottom surface of the outer casing (1), and hand-held slots (3) are respectively opened on the two outer sides of the outer casing (1).

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