Self-locking packaging box

Abstract

The utility model discloses a self-locking packing box which comprises a box body and a box cover, an opening is formed in at least one side of the box body, the box cover is used for sealing the opening, the box cover comprises a first cover plate, the first cover plate is connected with the first side of the opening, at least one first inserting tongue is arranged on the side, away from the first side, of the first cover plate, and at least one second inserting tongue is arranged on the side, away from the first side, of the first cover plate. A first inserting groove is formed in the joint of the first inserting tongue and the first cover plate; the inserting buckles are connected to the second side of the opening, the second side is opposite to the first side, the inserting buckles correspond to the first inserting grooves in a one-to-one mode, each inserting buckle comprises a buckle body capable of being folded relative to the box body and a second inserting tongue capable of being folded relative to the buckle body, and each second inserting tongue is provided with a guiding structure capable of being inserted into the corresponding first inserting groove; and the length of the second inserting tongue is 3mm-6mm longer than that of the first inserting groove. The self-locking packaging box realizes self-locking in a covering state, and the structure of the inserting buckle or the first inserting groove needs to be damaged if the self-locking packaging box needs to be opened, so that the self-locking packaging box has an anti-theft function.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-theft self-locking packaging boxes, in particular to a self-locking packaging box. Background Art

[0002] Self-locking packaging boxes are generally used for the outer packaging of products. A container cavity is formed by a box body and is closed by a box cover. The box cover is generally connected to the box body in an openable and closable manner to facilitate the entry and exit of products.

[0003] After the product is placed in the box and the lid is closed, the prior art generally uses tape to seal the lid, but the sealing and removal process of the tape is relatively troublesome. Or, for example, CN205555008U disclosed on September 7, 2016, a packaging box uses a buckle structure for self-locking, but the buckle structure of the packaging box is easy to open, so that the product in the packaging box is easy to be checked and replaced by outsiders without the knowledge of the product owner. Utility Model Content

[0004] In order to overcome the defects in the prior art, the utility model provides a self-locking packaging box, which is self-locking when in a closed state. If it needs to be opened, the structure of the buckle or the first slot needs to be destroyed, thereby having an anti-theft function.

[0005] To achieve the above object, the technical solution adopted by the utility model is: a self-locking packaging box, comprising a box body and a box cover, at least one side of the box body forms an opening, the box cover is connected to the box body and is used to seal the opening, and the box cover comprises:

[0006] A first cover plate, the first cover plate is connected to a first side of the opening, at least one first plug tongue is provided on a side of the first cover plate away from the first side, and a first slot is provided at a connection between the first plug tongue and the first cover plate;

[0007] a buckle connected to a second side of the opening, the second side being opposite to the first side, the buckle corresponding to the first slot one by one, the buckle comprising a buckle body foldable relative to the box body, and a second inserting tongue foldable relative to the buckle body, the second inserting tongue having a guide structure capable of being inserted into the first slot, and the length of the second inserting tongue being 3 mm to 6 mm longer than that of the first slot;

[0008] When the self-locking packaging box is closed, the first inserting tongue is folded relative to the first cover plate until it is perpendicular to the first cover plate, the first cover plate is folded relative to the box body until the first inserting tongue is inserted into the box body, and the second inserting tongue is inserted into the first slot, so that the second inserting tongue and the wall surface forming the first slot are locked, so that the second inserting tongue cannot be pulled out of the first slot.

[0009] The second inserting tongue can be easily inserted into the first slot through the guiding structure. After the insertion, the second inserting tongue and the first slot are locked against each other, so that the box cover cannot be opened. If it needs to be opened, the structure of the inserting tongue or the first slot needs to be destroyed, thereby having an anti-theft function.

[0010] Furthermore, the second tongue includes a first side and a second side that are parallel, two side edges connected between the first side and the second side, the second side is longer than the first side, the second side is connected to the buckle body, and the angle between the two side edges and the second side is 60° to 75°. The trapezoidal design is guiding, making it easier for the second tongue to be inserted into the first slot.

[0011] Furthermore, the first cover plate is provided with a protrusion at the first slot, and when the self-locking packaging box is closed, the protrusion extends outwardly away from the box body by at least 1 mm. The protrusion of more than 1 mm can cover the second inserting tongue to prevent the second inserting tongue from being pulled out from the side.

[0012] Furthermore, the two sides of the buckle body are in an inwardly concave arc shape, and the radius of the arc is greater than or equal to the width of the second tongue. The strength of the buckle body is reduced as much as possible to prevent the buckle body from sinking too much into the box body when squeezed, resulting in a gap for the second tongue to be pulled out.

[0013] Furthermore, the length of the second inserting tongue is greater than or equal to 1 / 2 of the length of the first inserting tongue.

[0014] Further, when the length of the first cover plate is less than or equal to 400 mm, one first inserting tongue is provided;

[0015] When the length of the first cover plate is greater than 400 mm and less than 1000 mm, two first inserting tongues are arranged at equal intervals;

[0016] When the length of the first cover plate is greater than or equal to 1000 mm, three first inserting tongues are arranged at equal intervals.

[0017] Furthermore, the box cover also includes a second cover plate, which is openably connected to the second side of the opening, and a second slot that matches the first inserting tongue is provided at the connection between the second cover plate and the box body;

[0018] When the self-locking packaging box is closed, the second cover plate is located inside the first cover plate, and the first inserting tongue is inserted into the second inserting slot.

[0019] The second cover plate is used to support the first cover plate, so as to prevent the first cover plate from extending into the box body, thereby facilitating the assembly of the self-locking packaging box.

[0020] Furthermore, the box cover includes a third cover plate, which is connected to both sides of the opening perpendicular to the first side. When the self-locking packaging box is closed, the third cover plate is located on the inner side of the second cover plate. The third cover plate supports the second cover plate, making the entire self-locking packaging box more stable.

[0021] Furthermore, the self-locking packaging box is formed by cutting and folding a sheet, the sheet is provided with a conformal groove at the second insertion tongue, and the conformal groove is located on both sides of the second insertion tongue in the length direction.

[0022] Furthermore, the box body has openings on two opposite sides, and each opening is connected to a box cover.

[0023] By means of the above technical solution, the beneficial effects of the utility model are as follows:

[0024] 1. In the present application, the length of the second plug-in tongue is greater than that of the first slot, and the second plug-in tongue has a guide structure so that the second plug-in tongue can be easily inserted into the first slot. After insertion, the two ends of the second plug-in tongue abut against the walls of the two sides of the first slot, so that the second plug-in tongue cannot be pulled out of the first slot. If the box cover needs to be opened, the buckle or the structure of the first slot needs to be destroyed, thereby having an anti-theft function;

[0025] 2. The two sides of the buckle body in the present application are set to be concave arcs. In the prior art, the buckle body is a right-angled rectangle with a large area and high strength. It can withstand a large force and sink into the box body, resulting in a gap between the buckle body and the box body to pull out the second tongue. However, the arc buckle body of the present application has a small area and low strength. Excessive force applied to it will only cause it to break, further improving the anti-theft function;

[0026] 3. The present application provides the second inserting tongue with a buckle body that can be folded relative to the box body, so that the second inserting tongue can be inserted into the first slot without being pressed and folded, thereby speeding up production and assembly and reducing the defective rate.

[0027] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1This is a schematic diagram of the overall structure of the self-locking packaging box in the embodiment of the utility model;

[0030] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0031] Figure 3 yes Figure 1 Enlarged view of point B in the middle.

[0032] The figure marks of the above drawings are: 11, front plate; 12, side plate; 121, third cover plate; 13, rear plate; 14, adhesive plate; 2, first cover plate; 21, first plug tongue; 22, first slot; 3, second cover plate; 31, buckle; 311, buckle body; 312, second plug tongue; 3121, buckle. DETAILED DESCRIPTION

[0033] 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.

[0034] It should be noted that in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0035] Example: Combination Figure 1-3 As shown, this embodiment discloses a self-locking packaging box, including a box body and a box cover connected to the box body in an openable and closable manner. The self-locking packaging box is formed by cutting and folding a corrugated cardboard. Figure 1 As shown, the corrugated paperboard includes a front plate 11, a first cover plate 2 is disposed on the upper side of the front plate 11, a first plug tongue 21 is disposed on the side of the first cover plate 2 facing away from the front plate 11, and a first slot 22 is cut out at the connection between the first plug tongue 21 and the first cover plate 2. Figure 2 As shown, the first slot 22 is in an upwardly curved arc shape. When folded into a self-locking packaging box, the first slot 22 is used to insert the second inserting tongue 312. At the same time, due to the arc design, the first cover plate 2 is located at the position of the first slot 22 to form a protrusion, and the farthest point of the protrusion is 3mm away from the first cover plate 2. The protrusion can cover the second inserting tongue 312 and completely hide the buckle 31, preventing the second inserting tongue 312 from being pulled out from the side.

[0036] The left and right sides of the front panel 11 are respectively connected to a side panel 12, and the upper sides of the two side panels 12 are respectively provided with a third cover panel 121. A rear panel 13 is provided on the left side of the side panel 12 on the left, and an adhesive panel 14 is provided on the left side of the rear panel 13, and the adhesive panel 14 is used to be bonded to the side panel 12 on the right side of the front panel 11.

[0037] The upper side of the rear plate 13 is provided with a second cover plate 3. Figure 3 As shown, the second cover plate 3 and the back plate 13 are cut out together to form a buckle 31, the back plate 13 is cut out to form a buckle body 311 of the buckle 31, the left and right sides of the buckle body 311 are in an inwardly concave arc shape, the second cover plate 3 is cut out to form a second tongue 312 of the buckle 31, the second tongue 312 is in a trapezoidal shape, the connection between the buckle body 311 and the second tongue 312 is the long bottom side of the trapezoid, and the waist of the trapezoid is at an angle of 21° to the vertical direction. The trapezoidal design is guiding, making it easier to insert the second tongue into the first slot. The second slot 31 for inserting the first tongue 21 is cut out at the connection between the back plate 13 and the second cover plate 3.

[0038] The length of the long bottom side of the trapezoidal second tongue 312 is greater than the length of the first slot 22, and the protruding portion is the buckle 3121, and the length of the buckle 3121 protruding from the first slot 22 is 2.5 mm. It should be noted that an extension section is provided between the second tongue 312 and the buckle body 311, and the length of the extension section is equal to the thickness of the corrugated cardboard forming the self-locking packaging box. The length of the first slot 22 is greater than or equal to 1 / 2 of the length of the first tongue 21.

[0039] It should be noted that in this embodiment, only the left and right sides of the second plug tongue 312 and the second cover plate 3 are cut out to form gaps. In the conventional solution, the gap is generally cut out along the periphery of the second plug tongue 312 and the second cover plate 3. In this solution, clip-shaped waste is generated along the periphery of the second plug tongue 312. When removing the waste, the waste often gets stuck on the second plug tongue 312, making it more difficult to clean. The solution of this embodiment provides a space for the second plug tongue 312 to move freely, and forms two separate wastes on both sides of the second plug tongue 312, which makes it easier to clean.

[0040] The radius of the arc on the left and right sides of the buckle body 311 is greater than or equal to the width of the second tongue 312, so as to reduce the strength of the buckle body as much as possible, so as to prevent the buckle body 311 from sinking too much into the box body when it is squeezed, resulting in a gap for the second tongue 312 to be pulled out. The buckle body 311 in the prior art is a right-angled rectangle with a large area and high strength, which can withstand a large force and sink into the box body, resulting in a gap between the buckle body 311 and the box body for pulling out the second tongue 312, while the arc buckle body 311 of the present application has a small area and low strength, and applying too much force to it will only cause it to be damaged, further improving the anti-theft function.

[0041] When the corrugated cardboard is folded into a self-locking packaging box, the two side panels 12 are folded toward each other relative to the front panel 11 to be perpendicular to the front panel 11, the back panel 13 is folded relative to the side panel 12 to be perpendicular to the side panel 12, and the adhesive sheet 14 is bonded to the side panel 12 on the right side of the front panel 11. The third cover panel 121 is folded relative to the side panel 12 to be perpendicular to the side panel 12, the second cover panel 3 is folded relative to the back panel 13 to be perpendicular to the back panel 13 and located on the outside of the third cover panel 121, and the first cover panel 2 is folded relative to the front panel 11 to be perpendicular to the front panel 11 and located on the outside of the second cover panel 3. The second cover panel 3 supports the first cover panel 2 to prevent the first cover panel 2 from extending into the box body, which facilitates the assembly of the self-locking packaging box. At the same time, the third cover panel 121 supports the second cover panel 3, making the entire self-locking packaging box more stable.

[0042] The first inserting tongue 21 is folded relative to the first cover plate 2 to be perpendicular to the first cover plate 2 and the first inserting tongue 21 is inserted into the second slot 31. The second inserting tongue 312 is folded relative to the buckle body 311 to be perpendicular to the buckle body 311, and the buckle body 311 is rotated to insert the second inserting tongue 312 together with the buckle 3121 into the first slot 22. The trapezoidal second inserting tongue 312 can be easily inserted into the first slot 22, because the buckle 3121 is located on the left and right sides of the second inserting tongue 312 near its long bottom edge. After the insertion, the buckle 3121 can be locked with the wall surface of the first slot 22, so that the second inserting tongue 312 cannot be pulled out of the first slot 22. If the self-locking package box needs to be opened, the buckle 31 or the structure of the first slot 22 needs to be destroyed, so that the self-locking package box has an anti-theft function.

[0043] In this embodiment, the cover structure is disposed on both opposite sides of the self-locking packaging box. Figure 1 As shown, the lower side of the front plate 11 is provided with the same structure as the upper part of the rear plate 13 , the lower side of the rear plate 13 is provided with the same structure as the upper part of the front plate 11 , and the lower sides of the two side plates 12 are also provided with the third cover plate 121 .

[0044] It should be noted that the number of the first inserting tongues 21 varies according to the length of the first cover plate 2, wherein:

[0045] When the length of the first cover plate 2 is less than or equal to 400 mm, a first inserting tongue 21 is provided;

[0046] When the length of the first cover plate 2 is greater than 400 mm and less than 1000 mm, two first inserting tongues 21 are arranged at equal intervals;

[0047] When the length of the first cover plate 2 is greater than or equal to 1000 mm, three first inserting tongues 21 are arranged at equal intervals.

[0048] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A self-locking packaging box, comprising a box body and a box cover, wherein at least one side of the box body forms an opening, and the box cover is connected to the box body and is used to seal the opening, characterized in that: The box cover comprises: A first cover plate, the first cover plate is connected to a first side of the opening, at least one first plug tongue is provided on a side of the first cover plate away from the first side, and a first slot is provided at a connection between the first plug tongue and the first cover plate; a buckle connected to a second side of the opening, the second side being opposite to the first side, the buckle corresponding to the first slot one by one, the buckle comprising a buckle body foldable relative to the box body, and a second inserting tongue foldable relative to the buckle body, the second inserting tongue having a guide structure capable of being inserted into the first slot, and the length of the second inserting tongue being 3 mm to 6 mm longer than that of the first slot; When the self-locking packaging box is closed, the first inserting tongue is folded relative to the first cover plate until it is perpendicular to the first cover plate, the first cover plate is folded relative to the box body until the first inserting tongue is inserted into the box body, the second inserting tongue is inserted into the first slot, and the second inserting tongue and the walls on both sides of the first slot are against each other.

2. The self-locking packaging box according to claim 1, characterized in that: The second inserting tongue includes a first side and a second side parallel to each other, two side sides connected between the first side and the second side, the second side is longer than the first side, the second side is connected to the buckle body, and the included angle between the two side sides and the second side is 60° to 75°.

3. The self-locking packaging box according to claim 1, characterized in that: The first cover plate is provided with a protrusion at the first slot, and when the self-locking packaging box is closed, the protrusion extends outwardly away from the box body by at least 1 mm.

4. The self-locking packaging box according to claim 1, characterized in that: Both sides of the buckle body are in an inwardly concave arc shape, and the radius of the arc is greater than or equal to the width of the second inserting tongue.

5. The self-locking packaging box according to claim 1, characterized in that: The length of the second inserting tongue is greater than or equal to 1 / 2 of the length of the first inserting tongue.

6. The self-locking packaging box according to claim 1, characterized in that: When the length of the first cover plate is less than or equal to 400 mm, one first inserting tongue is provided; When the length of the first cover plate is greater than 400 mm and less than 1000 mm, two first inserting tongues are arranged at equal intervals; When the length of the first cover plate is greater than or equal to 1000 mm, three first inserting tongues are arranged at equal intervals.

7. The self-locking packaging box according to claim 1, characterized in that: The box cover further comprises a second cover plate, which is openably connected to the second side of the opening, and a second slot matching the first inserting tongue is provided at the connection between the second cover plate and the box body; When the self-locking packaging box is closed, the second cover plate is located inside the first cover plate, and the first inserting tongue is inserted into the second inserting slot.

8. The self-locking packaging box according to claim 7, characterized in that: The box cover includes a third cover plate, and the third cover plate is connected to two sides of the opening perpendicular to the first side. When the self-locking packaging box is closed, the third cover plate is located on the inner side of the second cover plate.

9. The self-locking packaging box according to claim 1, characterized in that: The self-locking packaging box is formed by cutting and folding a sheet, and the sheet is provided with a conforming groove at the second inserting tongue, and the conforming groove is located on both sides of the second inserting tongue in the length direction.

10. The self-locking packaging box according to claim 1, characterized in that: The box body has openings on two opposite sides, and each opening is connected to a box cover.

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