A lock catch base

Abstract

The application relates to a lock catch bottom box which comprises a front side, a right side, a back side and a left side, the right side of the front side is connected with the left side of the right side, and the right side of the right side is connected with the left side of the back side; the right side of the back side is connected with the left side of the left side, and the left side of the front side is connected with a left wing piece which is attached to the left side; the upper end of the back side is connected with a top cover surface, the top end of the front side and the top cover surface are provided with a first lock catch assembly, the bottom of the front side, the right side, the back side and the left side is provided with a second lock catch assembly, and the front side, the right side, the back side and the left side are buckled into a box body through the first lock catch assembly and the second lock catch assembly. The left wing piece design and the double lock catches (top and bottom) further enhance the structural strength and sealing reliability.

Description

Technical Field

[0001] This application relates to the technical field of cardboard box production, and in particular to a snap-lock bottom box. Background Technology

[0002] The current closed square cardboard box is made by folding corrugated cardboard or yellow cardboard along certain fold lines. The resulting square box is symmetrical about a vertical plane passing through the geometric center and parallel to the left and right sides.

[0003] Many fast food packaging boxes are not easy to lock and often open when full. Therefore, a locking structure is needed to ensure that the box has a stable and secure state for easy storage. Most existing locking structures are upper and lower latches, but this structure has insufficient load-bearing capacity and is prone to loosening if not properly assembled, which cannot meet the needs of use. Summary of the Invention

[0004] To address the issues of insufficient load-bearing capacity, easy loosening due to improper assembly, and inability to meet usage requirements in existing locking structures, this application provides a locking base box.

[0005] This application provides a locking bottom box, which adopts the following technical solution:

[0006] The locking box includes a front side, a right side, a rear side, and a left side. The right side of the front side is connected to the left side of the right side, and the right side of the right side is connected to the left side of the rear side. The right side of the rear side is connected to the left side of the left side. A left wing piece that fits against the left side is connected to the left side of the front side. A top cover is connected to the upper end of the rear side. A first locking assembly is provided on the top of the front side and the top cover. A second locking assembly is provided on the bottom of the front side, the right side, the rear side, and the left side. The front side, the right side, the rear side, and the left side are fastened together into a box body by the first locking assembly and the second locking assembly.

[0007] By adopting the above technical solution, the sides are arranged in sequence, the top cover is pressed down to engage with the first locking assembly, and the bottom side is aligned and fastened into the second locking assembly to complete the assembly. The whole process usually only requires manual operation, without glue, tape or other tools, achieving high stability of the box, extreme convenience of assembly or disassembly (tool-free and glue-free), and excellent reusability. At the same time, the left wing design and double locking (top and bottom) further enhance the structural strength and sealing reliability.

[0008] Preferably, the first locking assembly includes a first locking plate, a second locking plate, and a third locking plate. The first locking plate is connected to the side of the top cover away from the rear side, and the second and third locking plates are both connected to the top of the front side. A first slot that mates with the second locking plate is provided at the connection between the first locking plate and the top surface, and a second slot that mates with the third locking plate is provided on the top surface.

[0009] By adopting the above technical solution, when the top cover is pressed down, the first locking piece is inserted into the area where the second locking piece is located on the top of the front side. The second locking piece is embedded in the first slot, so that the thickness of the second locking piece fits tightly with the slot, filling the gap between the top cover and the front side, eliminating longitudinal looseness, and preventing the box from shaking. The third locking piece is inserted into the second slot of the top cover, forming a directional limit, preventing the top cover from shifting left or right or sliding back and forth, and limiting and reinforcing the top cover.

[0010] Preferably, a semi-circular groove is formed on the top cover surface, and the semi-circular groove is connected to the first slot.

[0011] By adopting the above technical solution and setting a semi-circular groove, when disassembling the box, the second locking piece can be pried out through the semi-circular groove to open the top cover, making it easier for the user to pry it out and saving disassembly time.

[0012] Preferably, the second locking assembly includes two first support wings, a second support wing, a third support wing, and a fourth locking plate. The first support wings are connected to the bottom ends of the left and right sides, respectively. The second support wing is connected to the bottom end of the front side. The third support wing is connected to the bottom of the rear side. The fourth locking plate is connected to the side of the second support wing away from the front side. The third support wing has a third slot for cooperating with the fourth locking plate.

[0013] By adopting the above technical solution, the left and right first support wings are folded inward, the front second support wing is pressed down, and the third support wing is pressed down and folded inward. One end of the third support wing is inserted into the second support wing, and then the fourth locking piece is inserted into the third slot to splice and fix the bottom. By splicing the first support wing, the second support wing, the third support wing and the fourth locking piece, the bottom is more stable and the bottom can bear more load.

[0014] Preferably, the top of both the left and right sides are connected to auxiliary support winglets, which are used to support the top cover surface.

[0015] By adopting the above technical solution and setting auxiliary support wings, the top cover can be supported to prevent it from collapsing into the box when the box is folded, thus avoiding affecting the packaging of the items.

[0016] Preferably, crease lines are provided at the connection points between the front side, right side, rear side, and left side, and the front side, right side, rear side, and left side are folded through the crease lines.

[0017] By adopting the above technical solution, the crease line serves as a clear folding guide, ensuring that each side is folded precisely at a preset angle, resulting in a final structure (such as a box or container) with distinct edges and a regular shape. The folds at the crease line can form "edges," which is equivalent to adding a supporting skeleton to the structure and avoiding structural deformation caused by folding deviations.

[0018] Preferably, small round holes, small square holes, or other forms of small holes and slits are cut at regular intervals along the crease line or are regularly punched along the crease line.

[0019] By adopting the above technical solutions, the design of cuts, holes or slits at the crease line can break the continuity of the material at the crease line, reduce the internal stress concentration when folding rigid materials (such as thick cardboard and plastic sheets), and solve the problems of difficult folding of rigid materials, insufficient assembly stability and single function while maintaining the core advantages of the folding structure.

[0020] Preferably, the front side, right side, rear side, left side and top cover are perpendicular to each other when folded into a box.

[0021] By adopting the above technical solution, the front, right, rear, left and top sides are folded perpendicularly to each other when the box is formed, making the box a square box, which facilitates the placement of items.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. Arrange the sides in order, then press down the top cover to engage with the first locking assembly. At the same time, align the bottom side and snap it into the second locking assembly to complete the assembly. The entire process usually only requires manual operation, without glue, tape or other tools, achieving high stability of the box, extreme convenience of assembly or disassembly (tool-free and glue-free), and excellent reusability. Meanwhile, the left wing design and double locking (top and bottom) further enhance the structural strength and sealing reliability.

[0024] 2. By setting a semi-circular groove, when disassembling the box, the second locking piece can be pried out through the semi-circular groove to open the top cover, making it easier for the user to pry it out and saving disassembly time;

[0025] 3. Crease lines serve as clear folding guides, ensuring that each side is folded precisely at a preset angle, resulting in a final structure (such as a box or container) with distinct edges and a regular shape. The folds at the crease lines can form "edges," which is equivalent to adding a supporting skeleton to the structure and avoiding structural deformation caused by folding deviations. Attached Figure Description

[0026] Figure 1 This is the main view of the latch base box;

[0027] Figure 2 This is a side view of the latch base box;

[0028] Figure 3 This is an inner view of the latch base box.

[0029] Reference numerals: 1. Front side; 2. Right side; 3. Rear side; 4. Left side; 5. Left wing; 6. Top cover; 7. First locking assembly; 71. First locking piece; 72. Second locking piece; 73. Third locking piece; 74. First slot; 75. Second slot; 76. Semicircular groove; 8. Second locking assembly; 81. First support wing; 82. Second support wing; 83. Third support wing; 84. Fourth locking piece; 85. Third slot; 9. Auxiliary support wing; 10. Crease line. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail.

[0031] This application discloses a locking bottom box.

[0032] Reference Figure 1A locking base box includes a front side 1, a right side 2, a rear side 3, and a left side 4. The right side of the front side 1 is connected to the left side of the right side 2, and the right side of the right side 2 is connected to the left side of the rear side 3. The right side of the rear side 3 is connected to the left side of the left side 4. A left wing 5 that fits against the left side 4 is connected to the left side of the front side 1. A top cover 6 is connected to the upper end of the rear side 3. A first locking assembly 7 is provided on the top of the front side 1 and the top cover 6. A second locking assembly 8 is provided at the bottom of the front side 1, right side 2, rear side 3, and left side 4. Side 2, rear side 3, and left side 4 are fastened together into a box body by the first locking assembly 7 and the second locking assembly 8. The sides are arranged in order, and then the top cover 6 is pressed down to engage with the first locking assembly 7. At the same time, the bottom side is aligned and fastened into the second locking assembly 8 to complete the assembly. The whole process usually only requires manual operation, without glue, tape or other tools, which achieves high stability of the box body, extreme convenience of assembly or disassembly, and excellent reusability. Meanwhile, the design of the left wing 5 and the double locking further enhance the structural strength and sealing reliability.

[0033] refer to Figure 2 The first locking assembly 7 includes a first locking piece 71, a second locking piece 72, and a third locking piece 73. The first locking piece 71 is connected to the side of the top cover 6 away from the rear side 3. The second locking piece 72 and the third locking piece 73 are both connected to the top of the front side 1. A first slot 74 that mates with the second locking piece 72 is provided at the connection between the first locking piece 71 and the top surface. A second slot 75 that mates with the third locking piece 73 is provided on the top surface. The third locking piece 73 and the second slot 75 correspond one-to-one. When the top cover 6 is pressed down, the first locking piece 71 is inserted into the area where the second locking piece 72 is located at the top of the front side 1. The second locking piece 72 is embedded in the first slot 74, so that the thickness of the second locking piece 72 fits tightly with the slot, filling the gap between the top cover 6 and the front side 1, eliminating longitudinal looseness, and preventing the box from shaking. The third locking piece 73 is inserted into the second slot 75 of the top cover 6, forming a directional limit, preventing the top cover 6 from shifting left or right or sliding back and forth, and limiting and reinforcing the top cover 6.

[0034] refer to Figure 2 A semi-circular groove 76 is provided on the top cover surface 6, and the semi-circular groove 76 is connected to the first slot 74. By providing the semi-circular groove 76, when disassembling the box, the second locking piece 72 can be pried out through the semi-circular groove 76 to open the top cover surface 6, making it easier for the user to pry it out and saving disassembly time.

[0035] refer to Figure 2The second locking assembly 8 includes two first support wings 81, a second support wing 82, a third support wing 83, and a fourth locking piece 84. The first support wings 81 are connected to the bottom ends of the left side 4 and the right side 2, respectively. The second support wing 82 is connected to the bottom end of the front side 1. The third support wing 83 is connected to the bottom of the rear side 3. The fourth locking piece 84 is connected to the side of the second support wing 82 away from the front side 1. The third support wing 83 has a third slot 85 that works with the fourth locking piece 84. The left and right first support wings 81 are folded inward, and then the front second support wing 82 is pressed down, causing the third support wing 83 to be pressed down and folded inward, so that one end of the third support wing 83 is inserted into the second support wing 82. Then the fourth locking piece 84 is inserted into the third slot 85, so that the bottom is spliced ​​and fixed. By splicing the first support wings 81, the second support wings 82, the third support wings 83, and the fourth locking piece 84, the bottom is made more stable and the bottom load-bearing capacity is increased.

[0036] refer to Figure 2 The top of both the left side 4 and the right side 2 are connected to auxiliary support wing pieces 9, which are used to support the top cover 6. By setting the auxiliary support wing pieces 9, the top cover 6 can be supported to prevent it from collapsing into the box when the box is folded, thus avoiding affecting the packaging of the items.

[0037] refer to Figure 3 Crease lines 10 are provided at the connection points between the front side 1, right side 2, rear side 3, and left side 4. The front side 1, right side 2, rear side 3, and left side 4 are folded through crease lines 10. Small round holes, small square holes, or other forms of small holes and slits are regularly punched on crease lines 10 at certain intervals. Crease lines 10 serve as clear folding guides, ensuring that each side is folded precisely at a preset angle, resulting in a final structure (such as a box or cabinet) with distinct edges and a regular shape. The folds at crease lines 10 can form "edges," which are equivalent to adding a supporting skeleton to the structure, avoiding structural deformation caused by folding deviations. The cuts, holes, or slits at crease lines 10 can break the material continuity at crease lines 10, reducing the internal stress concentration when folding rigid materials such as thick cardboard or plastic sheets. While maintaining the core advantages of the folding structure, it solves the problems of difficult folding of rigid materials, insufficient assembly stability, and limited functionality.

[0038] The implementation principle of this application embodiment is as follows: In implementation, when the front side 1, right side 2, rear side 3, left side 4 and top cover 6 are folded into a box, they are perpendicular to each other. Then, the auxiliary support wings are folded inward, and the top cover 6 is pressed down. The first locking piece 71 is inserted into the area where the second locking piece 72 is located at the top of the front side 1. The second locking piece 72 is embedded in the first slot 74, so that the thickness of the second locking piece 72 is closely fitted with the slot, filling the gap between the top cover 6 and the front side 1. The third locking piece 73 is inserted into the second slot 75 of the top cover 6, forming a directional limit and fixing the top cover 6. Then, the left and right first support wings 81 are folded inward, and the front second support wing 82 is pressed down. Then, the third support wing 83 is pressed down and folded inward, so that one end of the third support wing 83 is inserted into the second support wing 82. Then, the fourth locking piece 84 is inserted into the third slot 85, so that the bottom is spliced ​​and fixed, thereby assembling the cardboard box, increasing the load-bearing capacity of the cardboard box and reducing the risk of the cardboard box being stretched open by items.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A locking bottom box, characterized in that, The device includes a front side (1), a right side (2), a rear side (3), and a left side (4). The right side of the front side (1) is connected to the left side of the right side (2), and the right side of the right side (2) is connected to the left side of the rear side (3). The right side of the rear side (3) is connected to the left side of the left side (4). A left wing piece (5) that fits against the left side (4) is connected to the left side of the front side (1). A top cover (6) is connected to the upper end of the rear side (3). A first locking assembly (7) is provided on the top of the front side (1) and the top cover (6). A second locking assembly (8) is provided at the bottom of the front side (1), the right side (2), the rear side (3), and the left side (4). The front side (1), the right side (2), the rear side (3), and the left side (4) are fastened together into a box body by the first locking assembly (7) and the second locking assembly (8).

2. The locking bottom box according to claim 1, characterized in that, The first locking assembly (7) includes a first locking piece (71), a second locking piece (72) and a third locking piece (73). The first locking piece (71) is connected to the side of the top cover (6) away from the rear side (3). The second locking piece (72) and the third locking piece (73) are both connected to the top of the front side (1). A first slot (74) that cooperates with the second locking piece (72) is provided at the connection between the first locking piece (71) and the top surface. A second slot (75) that cooperates with the third locking piece (73) is provided on the top surface.

3. The locking bottom box according to claim 2, characterized in that, A semi-circular groove (76) is provided on the top cover surface (6), and the semi-circular groove (76) is connected to the first slot (74).

4. The locking bottom box according to claim 1, characterized in that, The second locking assembly (8) includes two first support wings (81), a second support wing (82), a third support wing (83), and a fourth locking plate (84). The first support wings (81) are connected to the bottom ends of the left side (4) and the right side (2), respectively. The second support wing (82) is connected to the bottom end of the front side (1). The third support wing (83) is connected to the bottom of the rear side (3). The fourth locking plate (84) is connected to the side of the second support wing (82) away from the front side (1). The third support wing (83) has a third slot (85) that cooperates with the fourth locking plate (84).

5. The locking bottom box according to claim 1, characterized in that, The top of both the left side (4) and the right side (2) are connected to auxiliary support wing pieces (9), which are used to support the top cover surface (6).

6. The locking bottom box according to claim 1, characterized in that, A crease line (10) is provided at the connection between the front side (1), right side (2), rear side (3) and left side (4), and the front side (1), right side (2), rear side (3) and left side (4) are folded through the crease line (10).

7. The locking bottom box according to claim 6, characterized in that, Small round holes, small square holes, or other forms of small holes and slits are cut at regular intervals along the crease line (10) or regularly punched along the crease line (10).

8. The locking bottom box according to claim 1, characterized in that, When the front side (1), right side (2), rear side (3), left side (4) and top cover (6) are folded into a box, they are perpendicular to each other.

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