Corrugated carton with adjustable size

Abstract

The utility model discloses a size-adjustable corrugated carton which comprises a main carton body with a supporting base at the bottom, the main carton body comprises a main carton body, a plurality of sets of positioning holes are correspondingly formed in the front end face and the rear end face of the main carton body at intervals, and the two ends of the upper end face of the main carton body are fixedly connected with two sets of C-shaped folding plates respectively. The upper end faces of the two C-shaped folding plates are jointly and fixedly connected with a supporting frame and an expansion box with a top cover on the top, the expansion box is connected to the upper end of the main box in a sleeving mode and comprises an expansion box body, a sliding groove is formed in the lower end face of the expansion box body, and the upper end of the main box body is slidably connected into the sliding groove. The two locking mechanisms are symmetrically installed on the front end face and the rear end face of the expansion box and used for fixing the expansion box to the upper end of the main box. By arranging the expansion box, the volume of the corrugated carton is adjusted, the impact strength and the compression strength of the expansion box body are improved, and the applicability of the corrugated carton is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to a corrugated paper box with adjustable size. Background Art

[0002] Corrugated paper is made into corrugated boxes through die-cutting, creasing, nailing or gluing. Corrugated boxes have gradually replaced wooden boxes and other transport packaging containers with their superior performance and good processing performance, and have become the main force of transport packaging. In addition to the advantages of protecting goods, facilitating storage and transportation, it also plays a role in beautifying and promoting goods. However, when packaging items, cartons of different sizes are often required because of the different sizes of items, which increases the workload and also increases the storage cost. Application No. CN202320186380.7 discloses a conveniently adjustable carton, including a box body and a box cover, the front and rear outer walls of the box body are provided with a plurality of long grooves, the box cover includes an upper cover plate, a front box plate, a rear box body, a right box plate and two left box plates, the inner walls of the front box plate and the rear box plate are respectively fixedly connected with a long convex strip, the long convex strip matches the long groove, and the height of the box body can be quickly adjusted according to the size of the item during packaging.

[0003] In daily life, items packed in cartons often need to be transported. In the existing carton structure, the expansion part is not strong enough and only relies on the cooperation of grooves and convex strips. The expanded cartons are prone to deformation during stacking and transportation, resulting in damage to the items. Utility Model Content

[0004] The utility model aims to provide a corrugated paper box with adjustable size, comprising:

[0005] The main box has a support base at the bottom, the main box includes a main box body, the front and rear end surfaces of the main box body are spaced apart and provided with a plurality of positioning holes, the two ends of the upper end surface of the main box body are respectively fixedly connected with two groups of C-shaped folding plates, and the upper surfaces of the two groups of C-shaped folding plates are commonly fixedly connected with a support frame.

[0006] An expansion box with a top cover on the top, the expansion box is sleeved on the upper end of the main box, and includes an expansion box body, a slide groove is opened on the lower end surface of the expansion box body, and the upper end of the main box body is slidably connected to the slide groove.

[0007] Two sets of locking mechanisms are symmetrically installed on the front and rear end surfaces of the expansion box, and are used to fix the expansion box on the upper end of the main box. The locking mechanism includes a mounting plate and a driving rod. The rear end of the driving rod passes through the mounting plate and is fixedly connected with a positioning plate. An elastic component is sleeved on the outer wall of the driving rod, and the elastic component is located between the positioning plate and the mounting plate. Two sets of threaded columns are installed on the front end surface of the positioning plate, and the two sets of threaded columns are symmetrically installed on both sides of the driving rod.

[0008] As a further preference, a fixing groove is opened at the top of the slide groove, and the support frame is fixedly connected in the fixing groove.

[0009] As a further preference, the front and rear end surfaces of the expansion box are both provided with mounting holes, the driving rod passes through the mounting holes and extends to the slide slot and is fixedly connected to the positioning plate, and the inner wall of the slide slot is provided with a receiving groove, the size of which is adapted to the positioning plate.

[0010] As a further preference, a guide groove is provided on the side of the slide groove facing away from the accommodating groove, and the guide groove has the same cross-sectional size as the positioning hole and is adapted in position.

[0011] As a further preference, two groups of positioning grooves are symmetrically provided on the inner wall of the expansion box, the guide grooves are connected to the inside of the positioning grooves, and the guide grooves and the positioning grooves are distributed in a cross shape.

[0012] As a further advantage, the positioning groove is adapted to the positioning plate.

[0013] As a further preference, the two groups of C-shaped folding plates are symmetrically arranged with a gap in between.

[0014] Through the above technical solution, the utility model provides a size-adjustable corrugated paper box with the following benefits:

[0015] The utility model provides a main box, an expansion box and a locking mechanism. When expansion is needed, the expansion box is lifted up by holding a handle. After reaching a suitable volume, the driving rod is pushed, and the driving rod drives the mounting plate to compress the elastic component and move. At the same time, the positioning plate passes through the positioning hole from the accommodating groove and moves to the guide groove. When the positioning plate passes through the guide groove and moves into the expansion box, the driving rod is rotated to change the positioning plate from horizontal to vertical. The driving rod is released, and the elastic potential energy of the elastic component drives the mounting plate to move away from the positioning groove. The driving rod pushed by the mounting plate drives the vertical positioning plate to move into the positioning groove, and the expansion box and the main box are locked. When the expansion box moves, the support frame in the fixed groove drives the C-shaped folding plate to move in the slide groove, thereby improving the impact resistance of the expansion box. While adjusting the volume of the corrugated paper box, the impact resistance and pressure resistance of the expansion box are increased, thereby improving the applicability of the corrugated paper box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of a corrugated paper box with adjustable size.

[0017] Figure 2 This is a schematic diagram of the main box structure of the utility model.

[0018] Figure 3 This is a schematic diagram of the expansion box structure of the utility model.

[0019] Figure 4 For the utility model Figure 3 A schematic diagram of the enlarged structure in the middle.

[0020] Figure 5 This is a schematic diagram of the locking mechanism structure of the utility model.

[0021] In the figure: 1 supporting base, 2 main box, 21 C-type folding plate, 22 supporting frame, 23 main box body, 24 positioning hole, 3 expansion box, 31 expansion box body, 32 slide groove, 33 fixing groove, 34 mounting hole, 35 accommodating groove, 36 guide groove, 37 positioning groove, 4 locking mechanism, 41 elastic component, 42 positioning plate, 43 mounting plate, 44 threaded column, 45 driving rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 The utility model aims to provide a corrugated paper box with adjustable size, comprising:

[0024] The main box 2 has a support base 1 at the bottom, and the main box 2 includes a main box body 23. The front and rear end surfaces of the main box body 23 are provided with a plurality of positioning holes 24 at intervals. Two ends of the upper end surface of the main box body 23 are respectively fixedly connected with two groups of C-shaped folding plates 21. The upper end surfaces of the two groups of C-shaped folding plates 21 are commonly fixedly connected with a support frame 22.

[0025] The expansion box 3 is provided with a top cover, and the expansion box 3 is sleeved on the upper end of the main box 2, and includes an expansion box body 31, and a slide groove 32 is provided on the lower end surface of the expansion box body 31, and the upper end of the main box body 23 is slidably connected in the slide groove 32.

[0026] Two sets of locking mechanisms 4 are symmetrically installed on the front and rear end surfaces of the expansion box 3, and are used to fix the expansion box 3 on the upper end of the main box 2. The locking mechanism 4 includes a mounting plate 43 and a driving rod 45. The rear end of the driving rod 45 passes through the mounting plate 43 and is fixedly connected to a positioning plate 42. An elastic component 41 is sleeved on the outer wall of the driving rod 45. The elastic component 41 is located between the positioning plate 42 and the mounting plate 43. Two sets of threaded columns 44 are installed on the front end surface of the positioning plate 42. The two sets of threaded columns 44 are symmetrically installed on both sides of the driving rod 45.

[0027] Specifically, the support base 1 is installed at the lower end of the main box 2 to improve the strength of the box body and prevent the carton from getting damp. The expansion box 3 is sleeved on the upper end of the main box 2. The expansion box 3 is pulled upward and the main box 2 and the expansion box 3 are fixed through the locking mechanism 4 to achieve the effect of adjusting the size of the carton. Two sets of threaded columns 44 are threadedly connected to the mounting plate 43. The distance between the mounting plate 43 and the outer wall of the expansion box body 31 can be adjusted by rotating the threaded columns 44 to complete the installation and disassembly of the locking mechanism 4.

[0028] It should be noted that the material of the support base 1 can be plastic, such as polytetrafluoroethylene, nylon, polycarbonate, etc. The C-shaped folding plate 21 is a folding plate with self-expansion capability. The height of the C-shaped folding plate 21 is adjusted by automatically controlling the folding angle. Memory metal or other elastic materials can be used to achieve the function of compression and extension of the folding plate. This belongs to the prior art, and the detailed principles and structures will not be elaborated here.

[0029] See also Figure 3 A fixing groove 33 is formed at the top of the slide groove 32 , and the support frame 22 is fixedly connected in the fixing groove 33 .

[0030] Specifically, the lower end face of the support frame 22 is fixedly connected to the C-shaped folding plate 21, and the C-shaped folding plate 21 is always located in the slide groove 32. When the expansion box 31 moves up and down, the support frame 22 drives the C-shaped folding plate 21 to fill the inside of the slide groove 32 at the upper end of the support frame 22, and cooperates with the support frame 22 to enhance the impact resistance and compressive strength of the expansion box 31.

[0031] It should be noted that the support frame 22 and the fixing groove 33 are detachably connected.

[0032] See also Figure 4 The front and rear end surfaces of the expansion box 31 are both provided with mounting holes 34, and the driving rod 45 passes through the mounting hole 34 and extends to the slide groove 32 and is fixedly connected to the positioning plate 42. The inner wall of the slide groove 32 is provided with a receiving groove 35, and the size of the receiving groove 35 is adapted to the positioning plate 42.

[0033] Specifically, the elastic component 41 is installed between the expansion box 31 and the mounting plate 43. The driving rod 45 is pushed to drive the mounting plate 43 to compress the elastic component 41 and move the positioning plate 42 into the slide groove 32. After releasing the hand, the elastic force of the elastic component 41 pushes the mounting plate 43 to pull the positioning plate 42 to move into the accommodating groove 35, avoiding affecting the sliding of the upper end of the main box 23 in the slide groove 32.

[0034] It should be noted that two sets of handles are symmetrically installed on the upper end of the outer wall of the expansion box 31.

[0035] See also Figure 3 A guide groove 36 is formed on the side of the slide groove 32 away from the receiving groove 35 . The guide groove 36 has the same cross-sectional size as the positioning hole 24 and is matched in position.

[0036] Specifically, the driving rod 45 pushes the positioning plate 42 to move out of the accommodating groove 35 , pass through the positioning hole 24 , and enter the guide groove 36 , thereby fixing the height of the expansion box 31 and the main box 23 .

[0037] It should be noted that the length and width of the guide groove 36 and the positioning hole 24 are not less than the length and width of the positioning plate 42 .

[0038] See also Figure 4 and Figure 5 Two groups of positioning grooves 37 are symmetrically opened on the inner wall of the expansion box 31, and the guide grooves 36 are connected to the inside of the positioning grooves 37, and the guide grooves 36 and the positioning grooves 37 are distributed in a cross shape.

[0039] Specifically, the driving rod 45 drives the mounting plate 43 to compress the elastic component 41 and move the positioning plate 42 through the accommodating groove 35, the positioning hole 24 and the guide groove 36 in sequence, and finally moves to the inside of the expansion box 31, and rotates the driving rod 45 90 degrees to change the positioning plate 42 from horizontal placement to vertical placement. After releasing the hand, the deformed elastic component 41 produces elastic left action, pushing the mounting plate 43 to drive the driving rod 45 to move away from the positioning groove 37, and moving the positioning plate 42 into the positioning groove 37, thereby locking the expansion box 31 and the main box 23 to prevent the expansion box 31 from sliding with the main box 23 due to external force.

[0040] It should be noted that during transportation, the two sets of threaded columns 44 can be rotated, the mounting plate 43 moves outward, and the distance between the mounting plate 43 and the expansion box 31 increases. At this time, the driving rod 45 driven by the mounting plate 43 drives the positioning plate 42 to move further into the positioning groove 37, thereby enhancing the locking of the expansion box 31 and the main box 23.

[0041] See also Figure 5 , the positioning groove 37 is adapted to the positioning plate 42 .

[0042] Specifically, after the positioning plate 42 is rotated 90 degrees, it can be moved to the inside of the positioning plate 42 .

[0043] It should be noted that the positioning plate 42 is a cuboid, and its cross section is a rectangle.

[0044] See also Figure 2 The two groups of C-shaped folding plates 21 are symmetrically arranged with a gap in the middle.

[0045] Specifically, a gap is provided between the two groups of C-shaped folding plates 21 to prevent the C-shaped folding plates 21 from being deformed when compressed and stretched, thereby preventing the stability of the movement of the expansion box 31 during expansion.

[0046] Working principle: During installation, align the slide groove 32 with the C-shaped folding plate 21 and install it on the upper end of the main box body 23. At this time, the support frame 22 is installed in the fixing groove 33, and the rear end of the driving rod 45 of the outer wall sleeve mounting plate 43 is extended into the slide groove 32 through the mounting hole 34, and the positioning plate 42 is fixed to the end of the driving rod 45, and the threaded column 44 is rotated to adjust the distance between the mounting plate 43 and the outer wall of the expansion box body 31, and the locking mechanism 4 is externally mounted on the outer wall of the expansion box 3. At this time, the positioning plate 42 is completely located in the accommodating groove 35, and the items are placed in the main box body 23, and the height of the carton is adjusted. The expansion box body 31 is pulled upward by holding the handle. After reaching the appropriate height, the driving rod 45 is pushed to drive the mounting plate 43 to compress the elastic component 41 into the expansion box body 31 The expansion box 31 is moved to the outside by the elastic force, and the positioning plate 42 moves into the positioning groove 37 to lock the expansion box 31 and the main box 23. When the expansion box 31 moves upward, the support frame 22 in the fixed groove 33 drives the C-shaped folding plate 21 to move with the expansion box 31, fills the inside of the slide groove 32 at the upper end of the main box 23, and cooperates with the support frame 22 to improve the strength of the expansion box.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A size-adjustable corrugated paper box, characterized in that: include: A main box (2) with a supporting base (1) at the bottom, the main box (2) comprising a main box body (23), a plurality of positioning holes (24) being arranged at intervals on the front and rear end surfaces of the main box body (23), two groups of C-shaped folding plates (21) being fixedly connected to both ends of the upper end surface of the main box body (23), and a support frame (22) being fixedly connected to the upper end surfaces of the two groups of C-shaped folding plates (21), An expansion box (3) with a top cover on the top, the expansion box (3) is sleeved on the upper end of the main box (2), and comprises an expansion box body (31), a slide groove (32) is provided on the lower end surface of the expansion box body (31), and the upper end of the main box body (23) is slidably connected in the slide groove (32). Two sets of locking mechanisms (4) are symmetrically mounted on the front and rear end surfaces of the expansion box (3) and are used to fix the expansion box (3) to the upper end of the main box (2). The locking mechanism (4) comprises a mounting plate (43) and a driving rod (45). The rear end of the driving rod (45) passes through the mounting plate (43) and is fixedly connected to a positioning plate (42). An elastic component (41) is sleeved on the outer wall of the driving rod (45). The elastic component (41) is located between the positioning plate (42) and the mounting plate (43). Two sets of threaded columns (44) are mounted on the front end surface of the positioning plate (42). The two sets of threaded columns (44) are symmetrically mounted on both sides of the driving rod (45).

2. The size-adjustable corrugated paper box according to claim 1, characterized in that: A fixing groove (33) is provided at the top of the sliding groove (32), and the supporting frame (22) is fixedly connected in the fixing groove (33).

3. The size-adjustable corrugated paper box according to claim 1, characterized in that: The front and rear end surfaces of the expansion box (31) are both provided with mounting holes (34), the driving rod (45) passes through the mounting hole (34) and extends to the slide groove (32) to be fixedly connected with the positioning plate (42), and the inner wall of the slide groove (32) is provided with a receiving groove (35), and the size of the receiving groove (35) is adapted to the positioning plate (42).

4. The size-adjustable corrugated paper box according to claim 3, characterized in that: A guide groove (36) is provided on the side of the slide groove (32) facing away from the receiving groove (35); the guide groove (36) has the same cross-sectional size as the positioning hole (24) and is adapted in position.

5. The size-adjustable corrugated paper box according to claim 4, characterized in that: The inner wall of the expansion box (31) is symmetrically provided with two groups of positioning grooves (37); the guide grooves (36) are connected to the inside of the positioning grooves (37); and the guide grooves (36) and the positioning grooves (37) are distributed in a cross shape.

6. The size-adjustable corrugated paper box according to claim 5, characterized in that: The positioning groove (37) is adapted to the positioning plate (42).

7. The size-adjustable corrugated paper box according to claim 1, characterized in that: The two groups of C-shaped folding plates (21) are symmetrically arranged with a gap in between.

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