Packaging carton with adjustable internal space

Abstract

The utility model discloses a packing carton with an adjustable internal space, which comprises a carton body with two groups of opposite cover plates arranged on the upper side, extension boxes arranged on the left side and the right side of the carton body, side cover plates oppositely arranged on the upper surfaces of the two groups of extension boxes, and positioning components arranged at the left end and the right end of the front side and the rear side of the carton body. Supporting assemblies are arranged on the front sides and the rear sides of the ends, close to each other, in the two extension boxes correspondingly. The four positioning assemblies comprise positioning plates, and the four positioning plates are hinged to the left end and the right end of the front side and the right end of the rear side of the box body correspondingly. The four supporting assemblies comprise fixing pieces, the positioning assemblies are arranged, after the extension box extends, pressure on the positioning plates is relieved, the positioning plates are driven to reset through the elastic force of positioning springs, then positioning inserting rods are driven to be inserted into groove positions formed in the extension box, and the adjusted extension box is fixed; and the phenomenon that articles in the extension box are damaged when the extension box moves is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of cartons, in particular to a packaging carton with adjustable internal space. Background Art

[0002] Cartons are widely used, mainly in the product packaging of companies in the consumer field such as food and beverage, electronics, and home appliances, as well as logistics and express delivery companies. Cartons are one of the most common logistics and transportation packaging materials. Whether it is domestic or international express delivery, freight, etc., cartons are used in large quantities to protect goods and prevent them from being damaged during transportation. In retail places such as supermarkets and convenience stores, most goods are packaged and displayed in cartons. For example, food, beverages, home appliances, daily necessities, etc.

[0003] In the publication number CN213893266U, the utility model provides a packaging carton with adjustable internal space size, which belongs to the technical field of packaging cartons, including a main carton, a fixed frame, an inner sealing cardboard, an assembly carton, an outer sealing cardboard and a limiting strip. The surface of the main carton is adhesively fixed with a fixed frame, and a limiting groove is arranged on the inner side of the fixed frame. The utility model arranges assembly cartons at the left and right ends of the main carton, and the limiting strips on the inner side of the assembly carton can move in the limiting grooves of the fixed frame, so that the assembly carton can move laterally along the main carton, and the assembly carton can be moved by moving the assembly carton. The overall length of the carton can be adjusted, and it can be extended outward on the basis of the main carton. The size of the internal space of the carton can be adjusted, thereby increasing the capacity and volume of the carton. Users can adjust it according to their own needs, which is suitable for packaging items of different sizes, reducing the situation where items cannot be placed due to a single carton specification, making it more flexible in use. However, the extended part of the above-mentioned carton cannot be fixed when it is extended, which may cause the carton to change during movement, thereby causing damage to the internal items. For this reason, we propose a packaging carton with adjustable internal space. Utility Model Content

[0004] The purpose of the utility model is to provide a packaging carton with adjustable internal space to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a packaging carton with adjustable internal space, comprising: a box body with two groups of relative front cover plates on the upper side, extension boxes are arranged on the left and right sides of the box body, side cover plates are arranged relatively on the upper surfaces of the two groups of extension boxes, positioning components are arranged on the front and back sides and left and right ends of the box body, and support components are arranged on the front and back sides of the ends close to each other inside the two groups of extension boxes; four groups of positioning components include positioning plates, and the four groups of positioning plates are hingedly arranged on the left and right ends of the front and back sides of the box body respectively; four groups of support components include fixing plates, and the four groups of fixing plates are respectively installed on the ends close to each other inside the two groups of extension boxes.

[0006] Preferably, the two groups of extension boxes are provided with sliding bars on both sides, and matching sliding grooves are provided on both sides of the box body to facilitate the movement of the extension boxes.

[0007] Preferably, two groups of support blocks are provided on the side away from the lower surface of the two groups of extension boxes, and the lower ends of the support blocks are at the same height as the lower surface of the box body, and two groups of matching grooves are provided on the left and right sides of the lower surface of the box body, so that the extension box can be supported by the support blocks after extension.

[0008] Preferably, positioning blocks are provided at the four corners of the lower surface of the box body, and matching positioning grooves are provided on the sides away from the upper surfaces of the two sets of front cover plates, and the cartons can be stacked by setting the positioning blocks of the box body in the positioning grooves of the front cover plates.

[0009] Preferably, the four groups of positioning components further include a positioning rod, which is fixedly mounted on the right end of the rear side of the positioning plate. A positioning spring is provided on the left side of the rear surface of the positioning plate, and the extension box is fixed by the positioning rod.

[0010] Preferably, the positioning rod is movably inserted on the box body, and matching grooves are evenly opened on the front and rear sides of the extension box. The positioning spring is connected to the box body, and the box body is provided with matching grooves. The positioning plate is supported by the positioning spring, and the extension box is fixed by the positioning rod.

[0011] Preferably, the four groups of support components further include support springs, which are fixedly mounted on the upper surface of the fixing plate, and support the side cover plate arranged on the upper side of the extension box through the support springs.

[0012] The utility model has at least the following beneficial effects:

[0013] By providing a positioning assembly, after the extension box is extended, the pressure on the positioning plate is released, so that the elastic force of the positioning spring drives the positioning plate to reset, and then drives the positioning rod to be inserted into the slot opened in the extension box, thereby fixing the adjusted extension box to prevent the extension box from moving when moving and causing damage to the internal items.

[0014] By arranging a supporting assembly in the extension box, when the cartons need to be stacked, the cartons are fixed by inserting the positioning blocks under the box body into the positioning grooves provided on the front cover plate, so as to facilitate the stacking of the cartons, and then the side cover plates and the front cover plates are supported by the supporting springs on the fixing plates, thereby preventing the front cover plates and the side cover plates from being deformed due to the pressure when stacking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the disassembled structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model from top view;

[0019] Figure 5 It is a schematic diagram of the local structure of the utility model.

[0020] In the figure: 1. box body; 2. front cover; 3. extension box; 4. side cover; 5. support block; 6. positioning block; 7. positioning groove; 8. positioning plate; 9. positioning rod; 10. positioning spring; 11. fixing plate; 12. support spring. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-5The utility model provides a technical solution: a packaging carton with adjustable internal space, comprising: a box body 1 with two sets of relative front cover plates 2 arranged on the upper side, extension boxes 3 are arranged on the left and right sides of the box body 1, and side cover plates 4 are arranged on the upper surfaces of the two sets of extension boxes 3 relatively to each other, positioning components are arranged on the front and back sides and left and right ends of the box body 1, and supporting components are arranged on the front and back sides of the ends close to each other inside the two sets of extension boxes 3; four sets of positioning components include positioning plates 8, and the four sets of positioning plates 8 are respectively hingedly arranged on the left and right ends of the front and back sides of the box body 1; four sets of supporting components include fixing plates 11, and the four sets of fixing plates 11 are respectively installed on the ends close to each other inside the two sets of extension boxes 3.

[0023] Both sets of extension boxes 3 are provided with sliding bars on the left and right sides, and matching sliding grooves are provided on the left and right sides of the box body 1, so that the extension box 3 can be moved and adjusted in the box body 1 through the sliding grooves. The design of the sliding bars and sliding grooves can make the extension box 3 smoother when opening or closing, reduce friction, and thus expand the internal space of the box body 1.

[0024] Two groups of support blocks 5 are provided on the side away from the lower surface of the two groups of extension boxes 3, and the lower ends of the support blocks 5 are at the same height as the lower surface of the box body 1, and two groups of matching grooves are provided on the left and right sides of the lower surface of the box body 1. The design of the support blocks 5 can increase the stability of the box, so that the extension box 3 is guaranteed to be stable after extension, and the retraction of the support blocks 5 is facilitated by the set grooves.

[0025] Positioning blocks 6 are provided at the four corners of the lower surface of the box body 1, and matching positioning grooves 7 are provided on the sides of the upper surfaces of the two sets of front cover plates 2 that are away from each other. When the cartons are stacked, the positioning blocks 6 under the box body 1 can be inserted into the positioning grooves 7 provided on the front cover plates 2 to fix the cartons, thereby facilitating the stacking of the cartons.

[0026] The four groups of positioning components also include a positioning rod 9, which is fixedly installed on the right end of the rear side of the positioning plate 8. A positioning spring 10 is provided on the left side of the rear surface of the positioning plate 8. The positioning rod 9 is movably inserted on the box body 1, and the front and rear sides of the extension box 3 are evenly provided with matching grooves. The positioning spring 10 is connected to the box body 1, and the box body 1 is provided with matching grooves. The positioning rod 9 can be driven to disengage from the groove opened in the extension box 3 by pressing one side of the positioning spring 10 set on the positioning plate 8, and then the extension box 3 can be stretched for adjustment. After the extension box 3 is extended to a suitable size, the positioning plate 8 can be reset by the elastic force of the positioning spring 10, thereby driving the positioning rod 9 to be inserted in the groove opened in the extension box 3, and the adjusted extension box 3 is fixed, thereby preventing the extension box 3 from moving when moving.

[0027] The four groups of support components also include support springs 12, which are fixedly installed on the upper surface of the fixing plate 11. The side cover plate 4 and the front cover plate 2 can be supported by the support springs 12 on the fixing plate 11, thereby preventing the front cover plate 2 and the side cover plate 4 from being deformed due to pressure when stacked.

[0028] Working principle: When in use, by pressing one side of the positioning spring 10 set on the positioning plate 8, the positioning rod 9 is driven to disengage from the slot opened in the extension box 3, and then the extension box 3 is stretched and adjusted by the cooperation of the sliding bar and the sliding slot. After the extension box 3 is extended to a suitable size, the elastic force of the positioning spring 10 can drive the positioning plate 8 to reset, thereby driving the positioning rod 9 to be inserted into the slot opened in the extension box 3, fixing the adjusted extension box 3, thereby preventing the extension box 3 from moving when moving;

[0029] When stacking cartons, the cartons are fixed by inserting the positioning block 6 under the box body 1 into the positioning groove 7 set on the front cover 2 to facilitate the stacking of cartons, and then the side cover 4 and the front cover 2 are supported by the support spring 12 on the fixing plate 11.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] 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 packaging carton with adjustable internal space, comprising a box body (1) with two sets of opposite cover plates (2) arranged on the upper side, characterized in that: Extension boxes (3) are arranged on both left and right sides of the box body (1); side cover plates (4) are arranged opposite to each other on the upper surfaces of the two groups of extension boxes (3); positioning components are arranged on both the front and rear sides and both the left and right ends of the box body (1); and support components are arranged on both the front and rear sides of the ends close to each other inside the two groups of extension boxes (3); The four groups of positioning components include positioning plates (8), and the four groups of positioning plates (8) are hingedly arranged at the front and rear sides and the left and right ends of the box body (1) respectively; The four groups of support components include fixing plates (11), and the four groups of fixing plates (11) are respectively installed at adjacent ends inside the two groups of extension boxes (3).

2. A packaging carton with adjustable internal space according to claim 1, characterized in that: The two groups of extension boxes (3) are both provided with sliding bars on the left and right sides, and the box body (1) is both provided with sliding grooves matching the sliding bars on the left and right sides.

3. The packaging carton with adjustable internal space according to claim 1, characterized in that: Two groups of support blocks (5) are provided on the side away from each other on the lower surface of the two groups of extension boxes (3), and the lower ends of the support blocks (5) are at the same height as the lower surface of the box body (1), and two groups of matching grooves are provided on the left and right sides of the lower surface of the box body (1).

4. The packaging carton with adjustable internal space according to claim 1, characterized in that: Positioning blocks (6) are provided at the four corners of the lower surface of the box body (1), and matching positioning grooves (7) are provided on the sides of the upper surfaces of the two sets of front cover plates (2) that are away from each other.

5. The packaging carton with adjustable internal space according to claim 1, characterized in that: The four groups of positioning components also include a positioning rod (9), which is fixedly mounted on the right end of the rear side of the positioning plate (8), and a positioning spring (10) is arranged on the left side of the rear surface of the positioning plate (8).

6. The packaging carton with adjustable internal space according to claim 5, characterized in that: The positioning rod (9) is movably inserted on the box body (1), and matching grooves are evenly opened on both the front and rear sides of the extension box (3); the positioning spring (10) is connected to the box body (1), and the box body (1) is opened with a matching groove.

7. The packaging carton with adjustable internal space according to claim 1, characterized in that: The four groups of support components further include support springs (12), and the support springs (12) are fixedly mounted on the upper surface of the fixing plate (11).

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