Self-locking light-weight packaging box

Abstract

The utility model discloses a self-locking type light-weight packaging box which solves the technical problems that after a packaging box is self-locked, a rear cover plate is prone to edge warping due to the self-locking angle problem, so that the sealing effect is poor, and the packaging box is prone to loosening or scattering due to shaking in the transportation process and is not stable enough to use. Comprising a box body, a cover plate is arranged above the box body, mounting plates are arranged below the cover plate and close to the left side and the right side respectively, the tops of the two mounting plates are slidably connected with the bottom of the cover plate, and positioning rods are fixedly connected to the sides, away from each other, of the two mounting plates and close to the front side and the rear side respectively; through mutual cooperation of a transmission plate, a rotating shaft, a circular plate, a movable plate, a second spring, a tooth block, a tooth groove and the like, when the tooth block is engaged with the tooth groove, the circular plate and the transmission plate cannot rotate, the limiting effect is achieved, in this way, the four positioning rods cannot be loosened due to vibration or shaking, and the use stability can be effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of packaging technology, specifically relating to a self-locking lightweight packaging box. Background Technology

[0002] Self-locking boxes are a type of packaging box with a very convenient design, usually used for the transportation and storage of goods. Its main feature is that it can be sealed without the use of tape, rope or other fixing materials, through self-locking design. However, some existing packaging boxes are prone to the lid lifting due to the self-locking angle after self-locking, resulting in poor sealing effect. In addition, the packaging box is prone to loosening or falling apart due to shaking during transportation, making it not stable enough to use.

[0003] Therefore, a self-locking lightweight packaging box was designed to overcome the aforementioned technical shortcomings. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a self-locking lightweight packaging box. This packaging box solves the technical problems that the cover plate of the packaging box is prone to warping due to the self-locking angle, resulting in poor sealing effect, and the packaging box is prone to loosening or falling apart due to shaking during transportation, making it unstable in use.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides a self-locking lightweight packaging box, including a box body, a cover plate on the top of the box body, and mounting plates on the left and right sides below the cover plate. The tops of the two mounting plates are slidably connected to the bottom of the cover plate. Positioning rods are fixedly connected to the opposite sides of the two mounting plates near the front and rear sides. A sealing frame is provided inside the box body, and the top of the sealing frame is fixedly connected to the bottom of the cover plate. Square holes are opened on the left and right side walls of the sealing frame near the front and rear sides. Positioning holes matching the square holes are opened on the left and right side walls of the box body. One end of the positioning rod passes through the square hole and extends into the positioning hole. A rotating shaft is movably connected to the bottom of the cover plate near the middle via a bearing. A transmission mechanism is provided at the bottom end of the rotating shaft. A mounting groove is opened on the top of the cover plate, and a locking mechanism is provided in the mounting groove. The top end of the rotating shaft passes through the inner ring of the bearing and extends into the mounting groove to be fixedly connected to the locking mechanism.

[0008] Preferably, the transmission mechanism includes a transmission plate, the top of which is fixedly connected to the bottom of the rotating shaft, and a connecting rod symmetrically and movably connected to the bottom of the transmission plate. The bottom of the connecting rod is movably connected to the top of the mounting plate near the middle. A rectangular plate is symmetrically and fixedly connected to the bottom of the cover plate near the front side. A first spring is fixedly connected to the mounting plate on the opposite sides of the two rectangular plates.

[0009] Preferably, the locking mechanism includes a circular plate, the bottom of which is fixedly connected to the top of the rotating shaft. A movable groove is provided on the top of the circular plate. Movable plates are symmetrically slidably connected between the front and rear inner walls of the movable groove. The movable plates are L-shaped. Several toothed blocks are fixedly connected to the opposite sides of the two movable plates. The inner wall of the mounting groove is provided with evenly distributed toothed grooves. The toothed blocks mesh with the toothed grooves. A second spring is fixedly connected between the two movable plates.

[0010] Furthermore, the left and right inner walls of the box are respectively provided with arc-shaped chamfers near the top, and one end of each of the four positioning rods is in an arc-shaped position.

[0011] Furthermore, the tops of the two mounting plates are respectively symmetrically fixedly connected with first sliders, and the bottoms of the cover plates are respectively provided with first grooves that match the first sliders.

[0012] Furthermore, the front and rear sidewalls of the two second springs are respectively fixedly connected to second sliders, and the front and rear inner walls of the movable groove are respectively provided with second sliding grooves that match the second sliders.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model, through the cooperation between the cover plate, mounting plate, positioning rod, transmission plate, first spring and connecting rod, can achieve the effect of pressing the cover plate down so that the four positioning rods retract inward at the same time. When the cover plate is pressed down to the limit position, the positioning rods at the four corners will enter the positioning holes at the same time, which plays a self-locking role. The positioning rods near the four corners can prevent the cover plate from warping during use.

[0016] This invention, through the cooperation between the transmission plate, rotating shaft, circular plate, movable plate, second spring, tooth block, and tooth groove, ensures that when the tooth block meshes with the tooth groove, the circular plate and transmission plate will not rotate, thus playing a limiting role. In this way, the four positioning rods will not loosen due to vibration or shaking, effectively improving the stability of use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the cover plate of this utility model;

[0019] Figure 3 This is a bottom view of the cover plate structure of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the circular plate of this utility model;

[0021] Figure 5 This is a partial bottom view of the transmission plate of this utility model;

[0022] Figure 6 This is a schematic diagram showing the positional distribution of the movable plate of this utility model;

[0023] Figure 7 This is a schematic diagram showing the positional distribution of the square holes in this utility model;

[0024] Figure 8 This is a schematic diagram showing the positional distribution of the tooth grooves in this utility model;

[0025] Figure 9 This utility model Figure 2 Enlarged view of point A in the image.

[0026] The markings in the attached diagram are as follows: 1. Cover plate; 2. Box body; 3. Mounting plate; 4. Positioning rod; 5. Sealing frame; 6. Rotating shaft; 7. Transmission plate; 8. Connecting rod; 9. First spring; 10. Rectangular plate; 11. Square hole; 12. Positioning hole; 13. Mounting groove; 14. Round plate; 15. Movable groove; 16. Movable plate; 17. Gear groove; 18. Gear block; 19. Second spring. Detailed Implementation

[0027] This specific embodiment is a self-locking lightweight packaging box, the structural diagram of which is shown below. Figures 1-9 As shown, the device includes a housing 2, a cover plate 1 on top of the housing 2, and mounting plates 3 near the left and right sides of the cover plate 1. The tops of the two mounting plates 3 are slidably connected to the bottom of the cover plate 1. Positioning rods 4 are fixedly connected to the opposite sides of the two mounting plates 3 near the front and rear sides. A sealing frame 5 is provided inside the housing 2. The top of the sealing frame 5 is fixedly connected to the bottom of the cover plate 1. Square holes 11 are opened on the left and right side walls of the sealing frame 5 near the front and rear sides. Positioning holes 12 matching the square holes 11 are opened on the left and right side walls of the housing 2. One end of the positioning rod 4 passes through the square hole 11 and extends into the positioning hole 12. A rotating shaft 6 is movably connected to the bottom of the cover plate 1 near the middle via a bearing. A transmission mechanism is provided at the bottom end of the rotating shaft 6. A mounting groove 13 is opened on the top of the cover plate 1. A locking mechanism is provided in the mounting groove 13. The top end of the rotating shaft 6 passes through the inner ring of the bearing and extends into the mounting groove 13 and is fixedly connected to the locking mechanism.

[0028] The positioning rod 4 in this technical solution is made of aluminum alloy. Aluminum alloy has the advantages of high hardness and light weight, which can reduce weight while improving stability during use.

[0029] like Figure 3 and Figure 5 As shown, the transmission mechanism includes a transmission plate 7, the top of which is fixedly connected to the bottom of the rotating shaft 6, and a connecting rod 8 is symmetrically and movably connected to the bottom of the transmission plate 7. The bottom of the connecting rod 8 is movably connected to the top of the mounting plate 3 near the middle. A rectangular plate 10 is symmetrically and fixedly connected to the bottom of the cover plate 1 near the front side. A first spring 9 is fixedly connected to the mounting plate 3 on the side of the two rectangular plates 10 that are far apart from each other.

[0030] In this technical solution, the two first springs 9 have relatively small elastic force, which allows the four positioning rods 4 to retract inward quickly and easily when the cover plate 1 is pressed, avoiding the situation where the positioning rods 4 cannot retract due to the large elastic force of the first springs 9.

[0031] like Figures 4-9 As shown, the locking mechanism includes a circular plate 14, the bottom of which is fixedly connected to the top of the rotating shaft 6. A movable groove 15 is provided on the top of the circular plate 14. Movable plates 16 are symmetrically slidably connected between the front and rear inner walls of the movable groove 15. The movable plates 16 are L-shaped. Several toothed blocks 18 are fixedly connected to the opposite sides of the two movable plates 16. The inner wall of the mounting groove 13 is provided with evenly distributed toothed grooves 17. The toothed blocks 18 mesh with the toothed grooves 17. A second spring 19 is fixedly connected between the two movable plates 16.

[0032] The locking mechanism can fix the position of the two movable plates 16, which can prevent the circular plate 14 and the transmission plate 7 from rotating, thereby effectively preventing the positioning rod 4 from shrinking during use and improving the stability of use.

[0033] The inner walls of the box 2 on the left and right sides near the top are respectively set with arc-shaped chamfers, and one end of the four positioning rods 4 is respectively in an arc-shaped position. Through the chamfer setting and the arc setting of the positioning rods 4, it is easier to make the positioning rods 4 retract into the sealing frame 5 when the cover plate 1 is pressed down, making it easier to use.

[0034] In addition, the tops of the two mounting plates 3 are symmetrically fixed with first sliders, and the bottom of the cover plate 1 is provided with first grooves that match the first sliders. The first sliders and the first grooves can limit the two mounting plates 3, so that the mounting plates 3 will not rotate during use, and the mounting plates 3 will not detach from the cover plate 1.

[0035] The two second springs 19 are respectively fixedly connected to the front and rear side walls of the second sliders. The front and rear inner walls of the movable groove 15 are respectively provided with second sliding grooves that match the second sliders. The second sliders and the second sliding grooves can prevent the movable plate 16 from separating from the circular plate 14, thus preventing the movable plate 16 from being ejected and playing a limiting role.

[0036] Working Principle: When using this technical solution, first place the item inside the box 2. After placement, to close the box 2, squeeze the two movable plates 16 to compress the second spring 19, causing the toothed block 18 to disengage from the toothed groove 17. Then, place the cover plate 1 above the box 2, allowing the sealing frame 5 to enter the box 2. When the sealing frame 5 enters the cover plate 1 to a certain extent, the four positioning rods 4 contact the top of the box 2. By pressing, the four positioning rods 4 simultaneously retract into the sealing frame 5, and the mounting plate 3 moves towards the center of the cover plate 1, compressing the first spring 9. Simultaneously, the mounting plate 3, through the connecting rod 8, drives the transmission... The movable plate 7 and the mounting groove 13 rotate as a whole. When the cover plate 1 is pressed down to the limit position, the rebound force of the first spring 9 pushes the positioning rod 4 to move outward and enter the positioning hole 12 on the box 2. In this way, the cover plate 1 will be locked on the top of the box 2 by the positioning rod 4. Then the movable plate 16 is released, and the rebound force of the second spring 19 pushes the two movable plates 16 away from each other, so that the tooth block 18 meshes with the tooth groove 17. This prevents the mounting groove 13 and the transmission plate 7 from rotating again, playing a locking role and effectively preventing the cover plate 1 from loosening due to vibration during use, which can effectively improve the stability of use.

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A self-locking lightweight packaging box, comprising a box body (2), characterized in that: A cover plate (1) is provided on the top of the box (2). Mounting plates (3) are respectively provided on the left and right sides below the cover plate (1). The tops of the two mounting plates (3) are slidably connected to the bottom of the cover plate (1). Positioning rods (4) are fixedly connected to the two mounting plates (3) on the opposite sides near the front and rear sides. A sealing frame (5) is provided inside the box (2). The top of the sealing frame (5) is fixedly connected to the bottom of the cover plate (1). Square holes (11) are respectively opened on the left and right side walls of the sealing frame (5) near the front and rear sides. The left and right side walls of the body (2) are respectively provided with positioning holes (12) that match the square hole (11). One end of the positioning rod (4) passes through the square hole (11) and extends into the positioning hole (12). The bottom of the cover plate (1) is connected to the rotating shaft (6) via a bearing near the middle. The bottom end of the rotating shaft (6) is provided with a transmission mechanism. The top of the cover plate (1) is provided with an installation groove (13). The installation groove (13) is provided with a locking mechanism. The top end of the rotating shaft (6) passes through the inner ring of the bearing and extends into the installation groove (13) and is fixedly connected to the locking mechanism.

2. The self-locking lightweight packaging box according to claim 1, characterized in that: The transmission mechanism includes a transmission plate (7), the top of which is fixedly connected to the bottom of the rotating shaft (6), and a connecting rod (8) is symmetrically and movably connected to the bottom of the transmission plate (7). The bottom of the connecting rod (8) is movably connected to the top of the mounting plate (3) near the middle. A rectangular plate (10) is symmetrically and fixedly connected to the bottom of the cover plate (1) near the front side. A first spring (9) is fixedly connected to the mounting plate (3) on the opposite sides of the two rectangular plates (10).

3. The self-locking lightweight packaging box according to claim 1, characterized in that: The locking mechanism includes a circular plate (14), the bottom of which is fixedly connected to the top of the rotating shaft (6). A movable groove (15) is provided on the top of the circular plate (14). Movable plates (16) are symmetrically slidably connected between the front and rear inner walls of the movable groove (15). The movable plates (16) are L-shaped. Several toothed blocks (18) are fixedly connected to the opposite sides of the two movable plates (16). The inner wall of the mounting groove (13) is provided with evenly distributed toothed grooves (17). The toothed blocks (18) mesh with the toothed grooves (17). A second spring (19) is fixedly connected between the two movable plates (16).

4. The self-locking lightweight packaging box according to claim 1, characterized in that: The left and right inner walls of the box (2) are respectively set with arc-shaped chamfers near the top, and one end of each of the four positioning rods (4) is in an arc-shaped position.

5. The self-locking lightweight packaging box according to claim 1, characterized in that: The tops of the two mounting plates (3) are respectively fixedly connected with first sliders, and the bottoms of the cover plates (1) are respectively provided with first grooves that match the first sliders.

6. The self-locking lightweight packaging box according to claim 3, characterized in that: The front and rear sidewalls of the two second springs (19) are respectively fixedly connected with second sliders, and the front and rear inner walls of the movable groove (15) are respectively provided with second sliding grooves that match the second sliders.

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