WO2020248920A1 - Packaging box and accommodating device - Google Patents

Abstract

A packaging box (100) and an accommodating device (300), the packaging box (100) being configured to package a display panel (200), wherein the display panel (200) comprises a display board (220) and a circuit board (210) connected to the display board (220); the packaging box (100) comprises a plurality of stacked box bodies (110) and a fixing structure (120), and the fixing structure (120) is disposed at the bottom part of the box bodies (110). Each box body (110) comprises a first storage groove (111) and a second storage groove (112). The first storage groove (111) receives the display board (220), and the second storage groove (112) receives the circuit board (210). After the box bodies (110) are stacked, the fixing structure (120) of a box body (110) at a current layer faces the second storage groove (112) of a box body (110) at the next layer so as to limit the circuit board (210).

Description

Packing box and containing device

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on June 11, 2019, the application number is CN201910500008.7, and the application name is "a kind of packaging box and containing device", the entire content of which is incorporated herein by reference Applying.

Technical field

This application relates to the field of packaging, in particular to a packaging box and a containing device.

Background technique

The statements here only provide background information related to this application, and do not necessarily constitute prior art.

Display panel manufacturers have different methods for the shipment of TV LCD modules. Observing the current TV LCD panel market, semi-finished display panels, that is, semi-finished display panels without backlights, are gradually gaining popularity. This kind of semi-finished display panel is a display panel, that is, a display module part, and a semi-finished product assembled with a circuit board. It only has a circuit board with a basic drive circuit, and lacks a backlight board and power components.

The display panel body is connected to the circuit board through a flexible circuit board. When transporting the semi-finished display panel, the semi-finished display panel is often placed in the packaging box. However, the circuit board is prone to large shaking in the packaging box, which makes The flexible circuit board bears a large pulling force, which causes the flexible circuit board to be easily damaged, and the display panel body is prone to display abnormalities.

Summary of the invention

The purpose of this application is to provide a packaging box and a containing device to improve the stability of the display panel during transportation.

The present application discloses a packaging box configured to package a display panel. The display panel includes a display panel and a circuit board connected to the display panel. The packaging box includes a plurality of stacked box bodies and A fixing structure at the bottom of the box body, the box body includes a first receiving slot and a second receiving slot, the first receiving slot receives the display board, and the second receiving slot receives the circuit board; the box body After stacking, the fixing structure at the bottom of the box of the current layer is facing the second receiving slot of the box of the next layer to limit the circuit board.

The application also discloses a packaging box configured to package a display panel. The display panel includes a display board and a circuit board connected to the display board. The packaging box includes a plurality of stacked box bodies and a cover set. Close the cover of the box on the uppermost layer; and a fixing structure provided at the bottom of the box; the box includes a first storage slot and a second storage slot, and the first storage slot accommodates the display The second receiving groove accommodates the circuit board; the bottom of the box body is provided with an installation groove for installing the fixing structure, and two ends of the installation groove are oppositely provided with installation holes and through holes; The structure includes: an adjusting rod installed in the mounting hole, the adjusting rod is provided with a lattice groove; a connecting rod connected to the adjusting rod at one end, and a connecting rod connected to the through hole at the other end, and passing through the through hole Hole, the diameter of the connecting rod is smaller than the diameter of the adjusting rod; the pressure head rotatably arranged on the adjusting rod through the lattice groove, the pressure head is provided with at least two, the box body After stacking, the pressure head of the box of the current layer is facing the second receiving slot of the box of the next layer to limit the circuit board; a knob arranged at the end of the connecting rod away from the adjusting rod , The knob has a drop-like structure, and both sides of the thicker end of the drop-like structure are respectively provided with a handle groove recessed on the opposite surface; a straight tension spring sleeved on the end of the connecting rod close to the adjusting rod, The diameter of the adjusting spring is greater than the diameter of the connecting rod and less than or equal to the diameter of the adjusting rod; and a scroll spring, the center end of the scroll spring is fixed on the adjusting rod placed in the mounting hole , The peripheral end is fixed in the mounting hole.

The present application also discloses a containing device, which includes a plurality of stacked boxes and a fixing structure, the fixing structure is arranged at the bottom of the box; the box includes a first storage slot and The second storage slot; after the boxes are stacked, the fixing structure of the box of the current layer is facing the second storage slot of the box of the next layer to limit the objects in the second storage slot.

Compared with the solution of the packaging box without a fixed structure, the present application is provided with a fixed structure at the bottom of the box. After the boxes are stacked, the fixed structure is just right on the second storage slot of the next layer of the box. The storage slot contains the circuit board, which can limit the movement of the circuit board, prevent the circuit board from shaking up and down and cause the circuit board and the display board to tear, avoid causing the fatigue fracture of the wire contained in the connection, and reduce the flexibility of the display panel during transportation The probability of damage to the circuit board is to improve the yield rate of the display panel and the stability of the display panel during transportation.

Description of the drawings

The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are set to illustrate the embodiments of the present application, and explain the principles of the present application together with the text description. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor. In the attached picture:

Fig. 1 is a schematic diagram of a containing device according to an embodiment of the present application;

2 is a schematic diagram of a box body of a packaging box according to an embodiment of the present application;

3 is a schematic diagram of a display panel placed in a box of a packaging box according to an embodiment of the present application;

4 is a schematic diagram of a cross-section of a packaging box provided with a fixing structure after being stacked according to an embodiment of the present application;

Fig. 5 is a schematic diagram of a fixing structure provided at the bottom of the box according to an embodiment of the present application;

FIG. 6 is a schematic top view of a display panel in a limit box with a fixed structure according to an embodiment of the present application;

Fig. 7 is a schematic diagram of a rotating rod installed in a box according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a box body of a packaging box provided with an installation groove according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a fixing structure according to an embodiment of the present application;

FIG. 10 is a schematic diagram of the knob of an embodiment of the present application after being fixed;

FIG. 11 is a schematic diagram after the knob of an embodiment of the present application is removed;

FIG. 12 is a schematic diagram of a specific structure of a knob according to an embodiment of the present application;

FIG. 13 is a schematic diagram of a structure provided with a straight tension spring according to an embodiment of the present application;

14 is a schematic diagram of a structure provided with a vortex spring according to an embodiment of the present application;

Fig. 15 is a schematic diagram of a stacked box body provided with a box cover according to another embodiment of the present application.

Detailed ways

It should be understood that the terms used here, the specific structure and function details disclosed are only for describing specific embodiments and are representative. However, this application can be implemented in many alternative forms and should not be interpreted as merely It is limited to the embodiments described here.

In the description of this application, the terms "first" and "second" are only set for the purpose of description, and cannot be understood as indicating relative importance or implicitly indicating the number of indicated technical features. Therefore, unless otherwise specified, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features; "plurality" means two or more. The term "comprising" and any variations thereof means non-exclusive inclusion, the possibility of the presence or addition of one or more other features, integers, steps, operations, units, components, and/or combinations thereof.

In addition, "center", "horizontal", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" The terms indicating the orientation or positional relationship are described based on the orientation or relative positional relationship shown in the drawings, and are only used to facilitate the simplified description of the application, rather than indicating that the pointed device or element must have a specific orientation , It is constructed and operated in a specific orientation, so it cannot be understood as a limitation of this application.

In addition, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection , It can also be electrical connection; it can be directly connected, it can also be indirectly connected through an intermediate medium, or the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

The application will be described in detail below with reference to the drawings and optional embodiments.

As shown in FIG. 1, as an embodiment of the present application, a containing device 300 is disclosed, including a packaging box 100. As shown in FIGS. 2 to 4, the packaging box 100 is configured to package a display panel 200, and the display The panel 200 includes a display board 220 and a circuit board 210 connected to the display board 220. The packaging box 100 includes a plurality of stacked box bodies 110 and a fixing structure 120 provided at the bottom of the box body 110. The body 110 includes a first storage slot 111 and a second storage slot 112. The first storage slot 111 receives the display board 220, and the second storage slot 112 receives the circuit board 210; after the box body 110 is stacked The fixing structure 120 at the bottom of the box body 110 of the current layer is facing the second receiving slot 112 of the box body 110 of the next layer to limit or unlock the circuit board 210.

Compared with the solution of the packaging box 100 not provided with the fixing structure 120, the present application is provided with a fixing structure 120 at the bottom of the box 110. After the boxes 110 are stacked, the fixing structure 120 is just right on the next layer of the box 110. The second receiving slot 112 contains the circuit board 210 in the second receiving slot 112, which can limit the movement of the circuit board 210, prevent the circuit board 210 from shaking up and down, causing the circuit board 210 and the display board 220 to tear, and avoid causing the connection in the connection. The contained wires are fatigued and fractured, which reduces the probability of damage to the flexible circuit board 210 of the display panel 200 during transportation, so as to improve the yield rate of the display panel 200.

Specifically, as shown in FIGS. 5 to 6, the fixed structure 120 includes a rotating rod 121 rotatably arranged at the bottom of the box body 110, and an indenter 122 arranged on the rotating rod 121. The cross section of 122 is a cam shape. When the cam-shaped indenter 122 rotates with the rotating rod 121, the distance between the indenter 122 and the circuit board 210 changes with the rotation track, so that the limit and unlock can be switched back and forth. Of course, it can also It is an eccentric circle or a similar shape with a variable wheel distance; the rotating rod 121 is rotatably arranged at the bottom of the box 110. When the circuit board 210 is placed in the second receiving slot 112 of the current box 110, the box 110 is stacked Then, by rotating the rotating rod 121 at the bottom of the upper box 110 to the limit state, the indenter 122 will rotate with the rotating rod 121 and press on the circuit board 210 to limit the circuit board 210 to prevent the circuit The board 210 shakes up and down.

Correspondingly, as shown in FIGS. 7 and 8 to drive the rotating rod 121 to rotate, the fixed structure 120 further includes a knob 123, the rotating rod 121 includes an adjusting rod 121a and a connecting rod 121b, and a mounting rotating rod 121 is provided at the bottom of the box 110 The mounting groove 113, the rotating rod 121 is installed inside to ensure that the fixed structure 120 will not occupy the area in the box 110. The two ends of the mounting groove 113 are provided with mounting holes 114 and through holes 115 to facilitate the installation and rotation of the rotating rod 121 One end of the adjusting rod 121a is installed in the mounting hole 114, the other end of the adjusting rod 121a is connected to the connecting rod 121b, and the end of the connecting rod 121b away from the adjusting rod 121a passes through the through hole 115 and then is connected to the knob 123. The knob 123 is located Outside of the box body 110, after the box body 110 is stacked, the rotation of the rotating rod 121 can be controlled by twisting the knob 123, which is convenient for operation.

The actual stacking situation of the second storage slot 112 where the circuit board 210 is placed is different. After the circuit board 210 is stored, multiple indenters 122 can be set according to different sizes, and the multiple indenters 122 press and limit the circuit board 210. The 122 rolling area can cover the whole circuit board 210 or part of the area, and the wide coverage area is better for fixing; or the surface of the circuit board 210 is not a flat surface due to the different shape of the circuit board 210, and there will be areas of different heights. A plurality of indenters 122 corresponding to different areas for angle adjustment. As shown in FIG. 9, a checkered groove 121c is provided on the adjusting rod 121a. The indenter 122 includes a sleeve hole 122a, and the indenter 122 is sleeved in the adjustment through the sleeve hole 122a. On the rod 121a, the indenter 122 is provided with a threaded hole. The indenter 122 can be locked by screwing into the grid groove 121c on the adjusting lever 121a. After the screw is loosened, the indenter 122 can be adjusted according to the actual situation. The angle of the indenter 122 and the distance between the indenters 122 need to be adjusted on the adjustment rod 121a, and the indenter 122 can be easily adjusted by tightening and loosening the screws.

Of course, the adjusting rod 121a is not only limited to the grid groove 121c, but also can be horizontal strip grooves, diagonal grid grooves 121c, and square grid grooves 121c on the adjusting rod 121a. Correspondingly, the inner surface of the sleeve hole 122a can be smooth. , It can also be rough. When it is rough, the inner surface of the sleeve hole 122a can be set as an alveolar meshing with the lattice groove 121c on the adjusting hole. The alveolar can cover the entire inner surface of the sleeve hole 122a, or only In the part opposite to the screw, the cross section of the sleeve hole 122a may be circular or convex.

Specifically, the knob 123 drives the rotating rod 121 to rotate so that the indenter 122 on the adjusting rod 121a presses the circuit board 210, and it needs to maintain this state. As shown in Figures 10 and 11, the bottom of the knob 123 is limited Position post 123a, corresponding to the through hole 115 on the outside of the box body 110, is provided with at least two limit holes 116 that cooperate with the limit post 123a. When the knob 123 is rotated to make the indenter 122 press the circuit board 210, the limit The post 123a snaps into the limit hole 116. At this time, the knob 123 is fixed and the indenter 122 is also fixed to achieve positioning and ensure the compression effect. If the position of the indenter 122 needs to be readjusted, the limit post 123a is pulled out The limit hole 116, at this time, the knob 123 returns to the free state, and the rotating rod 121 can be controlled to rotate.

Of course, the number of limit posts 123a can be one, the number of limit holes 116 can be multiple, the multiple limit holes 116 can be adjusted with greater precision, and the area corresponding to the limit hole 116 and the through hole 115 can also be After forming a groove 117, the knob 123 is installed in the groove 117, so that the knob 123 will not protrude from the box body 110, preventing the knob 123 from being exposed and damaged by impact, and playing a protective role for the knob 123.

More specifically, as shown in FIG. 12, the knob 123 includes a base 123b and a rotating part 123c. The base 123b is provided with a connecting rod hole 123d and a socket 123e connected to the connecting rod 121b, and the connecting rod 121b is inserted into the connecting rod hole 123d, The connecting rod 121b and the base 123b are fixed together by inserting the screw into the socket 123e, which is firmly fixed and can be easily disassembled; the rotating part 123c is provided with a knob groove 123f configured for grasping, and the knob groove 123f is respectively arranged on the knob 123 It is convenient to pinch the knob 123 to pull the limit post 123a out of the limit hole 116. Both the base 123b and the rotating part 123c are in the shape of a drop, and the area of the base 123b is larger than the area of the rotating part 123c. The handle groove 123f, The connecting rod hole 123d and the receptacle 123e are arranged in the thicker part of the drop-like structure to ensure the wall thickness of the knob 123 and improve the strength and toughness. The limit post 123a is provided with the thinner end of the drop-like base 123b.

Further, as shown in FIGS. 13 and 14, the diameter of the connecting rod 121b is smaller than the diameter of the adjusting rod 121a, and an adjusting spring 124 is sleeved at the end of the connecting rod 121b close to the adjusting rod 121a, and the adjusting spring 124 is a straight pull spring 124a. , The diameter of the straight spring 124a is greater than the diameter of the connecting rod 121b and less than or equal to the diameter of the adjusting rod 121a. When the limit post 123a of the knob 123 enters the limit hole 116, the straight spring 124a is in a normal state, Hold the mounting groove 113, and the other end against the end of the adjustment rod 121a, when the limit post 123a of the knob 123 is pulled out of the limit hole 116, the straight tension spring 124a is compressed, and the maximum compression of the straight tension spring 124a is less than the adjustment The rod 121a enters the depth of the mounting hole 114. After turning the knob 123 to the proper position, the limit post 123a has a tendency to return to the limit hole 116 under the elastic action of the straight tension spring 124a, and the limit post 123a can be made automatically by following the force. It snaps into the limit hole 116 so that the limit post 123a cannot easily escape from the limit hole 116, further improving the stability of the fixation; the adjustment spring 124 can also be a scroll spring 124b, and the center end of the scroll spring 124b is fixed on the adjustment rod 121a On the part placed in the mounting hole 114, the peripheral end of the scroll spring 124b is fixed on the mounting hole 114. The scroll spring 124b increases the tendency of the limit post 123a to rotate back to the initial position after being pulled out of the limit hole 116, To improve the reset effect, different effects can be achieved according to the initial fixed position of the scroll spring 124b. When the pressing head 122 presses the circuit board, the scroll spring 124b is in a compressed state. At this time, pull out the knob 123 and adjust the rod 121b. Under the action of the scroll spring 124b, there is a tendency to return to the initial position where the indenter 122 does not press on the circuit board, and follow the force to return to the unpressed gear, which is convenient for resetting after transportation and avoids being pressed The circuit board is damaged and other problems; when the indenter 122 presses the circuit board, the scroll spring 124b is in a normal state. At this time, the knob 123 is pulled out, and the adjusting rod 121b has the indenter 122 pressed against the circuit under the action of the scroll spring 124b. Following the trend on the board, you can know the angle at which the indenter 122 presses the circuit board without exerting any effort. In this way, you can fix the knob or fix the knob after increasing or decreasing the angle. The force of the scroll spring 124b is controllable. This avoids the problem of artificial rotation to press and control the force, resulting in excessive pressure and damage to the circuit board components.

As another embodiment of the present application, as shown in FIG. 15, after multiple boxes 110 are stacked, the uppermost box 110 needs to be provided with a box cover 130 correspondingly, and the box cover 130 is set to cover the box 110, The fixing structure 120 of the above-mentioned embodiment is also provided at the bottom of the box cover 130 corresponding to the second receiving groove 112 of the box body 110.

As shown in Figures 1 to 15 as another embodiment of the present application, a packaging box 100 is also disclosed, which is configured to package a display panel 200. The display panel 200 includes a display panel 220 and a circuit board connected to the display panel 220. 210. The packing box 100 includes a plurality of stacked box bodies 110 and a box cover 130 arranged to cover the uppermost box body 110; and a fixing structure 120 arranged at the bottom of the box body 110; The box body 110 includes a first receiving slot 111 and a second receiving slot 112, the first receiving slot 111 receives the display board 220, and the second receiving slot 112 receives the circuit board 210; the box 110 A mounting groove 113 for installing the fixing structure 120 is provided at the bottom of the mounting groove 113, and two ends of the mounting groove 113 are provided with mounting holes 114 and through holes 115 opposite to each other; the fixing structure 120 includes: an adjustment mounted on the mounting hole 114 Rod 121a, the adjusting rod 121a is provided with a checkered groove 121c; one end of the connecting rod 121b connected with the adjusting rod 121a, the other end is connected to the through hole 115, and passes through the through hole 115, the The diameter of the connecting rod 121b is smaller than the diameter of the adjusting rod 121a; the indenter 122 is rotatably arranged on the adjusting rod 121a through the lattice groove 121c, and the indenter 122 is provided with at least two indenters. After the boxes 110 are stacked, the indenter 122 of the box 110 of the current layer is facing the second receiving slot 112 of the box 110 of the next layer to limit the circuit board 210; it is arranged on the connecting rod 121b The knob 123 at one end far away from the adjusting rod 121a, the knob 123 has a drop-like structure, and both sides of the thicker end of the drop-like structure are respectively provided with a handle groove 123f recessed on the opposite surface; two adjusting springs 124, of which One is sleeved on the end of the connecting rod 121b close to the adjusting rod 121a, the diameter of the adjusting spring 124 is greater than the diameter of the connecting rod 121b and less than or equal to the diameter of the adjusting rod 121a, and the other is fixed at It is connected to the mounting hole 114 and to the adjusting rod 121a.

The above content is a further detailed description of the application in combination with specific optional implementations, and it cannot be considered that the specific implementation of the application is limited to these descriptions. For those of ordinary skill in the technical field to which this application belongs, a number of simple deductions or substitutions can be made without departing from the concept of this application, which should be regarded as falling within the protection scope of this application.

Claims (20)

1. A packaging box is configured to package a display panel, the display panel including a display board and a circuit board connected to the display board, and the packaging box includes:

   Multiple stacked boxes; and

   A fixed structure, the fixed structure is arranged at the bottom of the box;

   Wherein, the box body includes a first storage slot and a second storage slot, the first storage slot receives the display board, and the second storage slot receives the circuit board;

   After the boxes are stacked, the fixing structure of the box of the current layer is facing the second receiving slot of the box of the next layer to limit the circuit board.
2. A packaging box according to claim 1, wherein the fixed structure comprises a rotating rod rotatably arranged at the bottom of the box body, and a pressure head arranged on the rotating rod;

   When the rotating rod rotates, the pressure head of the box of the current layer limits the circuit board of the box of the next layer.
3. The packaging box according to claim 2, wherein the fixing structure further includes a knob, the rotating rod includes an adjusting rod and a connecting rod, and the box body includes a mounting hole and a through hole that are arranged oppositely;

   One end of the adjusting rod is installed in the mounting hole, the other end of the adjusting rod is connected with the connecting rod, and the end of the connecting rod away from the adjusting rod passes through the through hole and the knob Matching connection.
4. The packaging box according to claim 3, wherein the knob is provided with a limit post, and at least two limit holes that cooperate with the limit post are arranged around the through hole near the knob;

   When the limit post is stuck into the limit hole, the knob is fixed; when the limit post is pulled out of the limit hole, the knob controls the rotation of the rotating rod;

   The diameter of the connecting rod is smaller than the diameter of the adjusting rod, and the end of the connecting rod close to the adjusting rod is sleeved with an adjusting spring, and the adjusting spring controls the distance between the adjusting rod and the through hole.
5. A packaging box according to claim 4, wherein the adjustment spring is a straight tension spring, and the diameter of the straight tension spring is greater than the diameter of the connecting rod and less than or equal to the diameter of the adjustment rod; After the limit post enters the limit hole, the straight-tension spring is in a normal state, one end bears against the installation groove, and the other end bears against the end of the adjustment rod. When the limit post is pulled out of the limit After the hole is formed, the straight tension spring is compressed, and the maximum compression amount of the straight tension spring is less than the depth of the adjustment rod entering the mounting hole.
6. A packaging box according to claim 4, wherein the adjusting spring is a scroll spring, the center end of the scroll spring is fixed on the part of the adjusting rod placed in the mounting hole, and The peripheral end of the scroll spring is fixed on the mounting hole.
7. The packaging box according to claim 4, wherein the number of the limit posts is not less than two.
8. The packaging box according to claim 3, wherein the knob is provided with a handle groove configured to be grasped.
9. The packaging box according to claim 8, wherein the number of the handle grooves is not less than two, and the handle grooves are respectively arranged on both sides of the knob.
10. The packaging box according to claim 9, wherein the knob includes a base and a rotating part, the base is provided with a connecting rod hole and a socket connected with a connecting rod, and the connecting rod is inserted into the connecting rod In the hole, the connecting rod and the base are fixed together by inserting a screw into the socket, the base and the rotating part are both in the shape of a drop, and the area of the base is larger than the area of the rotating part, the The handle groove, the connecting rod hole and the insertion hole are arranged on the thicker part of the drop-like structure, and the limit post is arranged on the thinner end of the base.
11. The packaging box according to claim 3, wherein the knob is located outside the box body, and the knob controls the rotation of the rotating rod.
12. The packaging box according to claim 2, wherein the cross section of the indenter is cam shape or centrifugal circle.
13. A packaging box according to claim 12, wherein the pressure head comprises a sleeve hole, the pressure head is sleeved on the adjusting rod through the sleeve hole, and the pressure head is rotatably arranged on the adjusting rod. On the pole.
14. A packing box according to claim 13, wherein the adjusting rod is provided with a lattice groove, and the inner surface of the sleeve hole is provided with an alveolar engaged with the lattice groove; the pressure head A threaded hole is provided on the upper part, and the screw is retracted into the lattice groove on the adjusting rod.
15. The packaging box according to claim 2, wherein the rolling area of the pressing head covers the entire circuit board.
16. The packaging box according to claim 12, wherein the box body includes a mounting groove, the mounting groove is arranged at the bottom of the box body, and the rotating rod is arranged in the mounting groove.
17. The packaging box according to claim 2, wherein the indenter includes at least two.
18. The packaging box according to claim 1, wherein the packaging box comprises a box cover, the box cover is arranged on the top of the box body, and is arranged to cover the uppermost box body.
19. A packaging box is configured to package a display panel, the display panel including a display board and a circuit board connected to the display board, and the packaging box includes:

    Multiple stacked boxes; and

    The box cover is set to cover the uppermost box body;

    A fixed structure, the fixed structure is arranged at the bottom of the box body and the box cover;

    The fixed structure includes:

    An adjusting rod installed in the mounting hole, and a lattice groove is provided on the adjusting rod;

    A connecting rod, one end is connected to the adjusting rod, the other end is connected to the through hole and passing through the through hole, the diameter of the connecting rod is smaller than the diameter of the adjusting rod;

    The pressure head is rotatably arranged on the adjusting rod through the lattice grooves, and at least two pressure heads are provided. After the boxes are stacked, the pressure head of the current layer of the box is facing the next Layer the second receiving slot of the box body to limit the circuit board;

    The knob is arranged at the end of the connecting rod away from the adjusting rod, the knob has a drop-shaped structure, and two sides of the thicker end of the drop-shaped structure are respectively provided with a handle groove with a concave opposite surface;

    A straight pull spring, sleeved on the end of the connecting rod close to the adjusting rod, the diameter of the adjusting spring is greater than the diameter of the connecting rod and less than or equal to the diameter of the adjusting rod; and

    A scroll spring, the center end of the scroll spring is fixed on the adjusting rod placed in the mounting hole, and the peripheral end is fixed in the mounting hole;

    The box body includes a first receiving slot and a second receiving slot, the first receiving slot receives the display board, and the second receiving slot receives the circuit board;

    The bottom of the box body is provided with an installation groove for installing the fixing structure, and two ends of the installation groove are oppositely provided with installation holes and through holes.
20. A containing device, including:

    Multiple stacked boxes; and

    A fixed structure, the fixed structure is arranged at the bottom of the box;

    Wherein, the box body includes a first storage slot and a second storage slot configured to store objects;

    After the boxes are stacked, the fixing structure of the box of the current layer is facing the second storage groove of the box of the next layer to limit the objects in the second storage groove.

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