Packaging box
By designing limiting grooves and fixing grooves inside the box, the problem of circuit board shaking and collision in foam cushioning cotton packaging was solved, achieving more stable transportation protection.
Patent Information
- Application Number
- CN202520038671.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-01-07
AI Technical Summary
In existing technologies, when using foamed cushioning cotton to package thin boards or PCBA boards, there are still problems with shaking and collisions during transportation, leading to damage.
Design a packaging box comprising a box body, a first vertical plate, a first fixing plate, and multiple horizontal plates. Through a combination of limiting grooves and fixing grooves, the circuit board is limited and fixed, reducing shaking and collision.
It effectively reduces the shaking and collision of circuit boards during transportation, lowers the risk of damage, and improves transportation safety.
Smart Images
Figure CN223606063U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the packaging technical field, in particular to a packaging box. BACKGROUND
[0002] In the related art, a packaging box filled with high-elasticity foamed buffer cotton is usually used to package thin plates or PCBA boards, wherein the foamed buffer cotton can reduce the collision between the thin plates or PCBA boards and play a buffering protection role.
[0003] The present application discloses a packaging box. UTILITY MODEL CONTENT
[0004] In view of the above problems, the present application provides a packaging box, which overcomes the above problems or at least partially solves the above problems.
[0005] According to one aspect of the present application, a packaging box is provided, which comprises a box body provided with a containing cavity and an opening communicating with the containing cavity; a first vertical plate arranged in the containing cavity; a plurality of horizontal plates arranged in the containing cavity in a spaced manner along a first direction, the plurality of horizontal plates being connected with the first vertical plate in a cross manner, along the first direction, a limiting groove being arranged between two adjacent horizontal plates, an opening of the limiting groove facing the opening along a second direction, the first direction being perpendicular to the second direction; and a first fixing plate connected with the first vertical plate and abutting against the plurality of horizontal plates, the first fixing plate being used for carrying a circuit board.
[0006] In an optional manner, the packaging box further comprises a second vertical plate and a second fixing plate, the second vertical plate being arranged opposite to the first vertical plate along a third direction, the second vertical plate being connected with the plurality of horizontal plates in a cross manner, the second fixing plate being arranged at a bottom of the containing cavity, the second fixing plate being connected with the second vertical plate and abutting against the plurality of horizontal plates, the second fixing plate being used for carrying the circuit board; the third direction being perpendicular to the second direction, and the third direction being arranged at an angle with the first direction.
[0007] In an optional manner, the first fixing plate is wound to form a first avoiding space, the first fixing plate is provided with a first fixing groove penetrating through the first fixing plate, the first fixing groove communicating the first avoiding space and the limiting groove, and the first fixing groove being used for placing the circuit board; the second fixing plate is wound to form a second avoiding space, the second fixing plate is provided with a second fixing groove penetrating through the second fixing plate, the second fixing groove communicating the second avoiding space and the limiting groove, and the second fixing groove being used for placing the circuit board.
[0008] In an optional mode, the first fixed plate comprises a first folding part, a second folding part and a third folding part connected in sequence, the first folding part is connected with the first vertical plate on the side away from the second folding part, the third folding part is connected with the first vertical plate on the side away from the second folding part, the second folding part is arranged opposite to the first vertical plate, the third folding part is arranged opposite to the first folding part, the first vertical plate, the first folding part, the second folding part and the third folding part enclose to form a first avoiding space, and part of the second folding part and the third folding part penetrates to form a first fixed slot; the second fixed plate comprises a fourth folding part, a fifth folding part and a sixth folding part connected in sequence, the fourth folding part is connected with the second vertical plate on the side away from the fifth folding part, the sixth folding part is connected with the second vertical plate on the side away from the fifth folding part, the fifth folding part is arranged opposite to the second vertical plate, the sixth folding part is arranged opposite to the fourth folding part, the second vertical plate, the fourth folding part, the fifth folding part and the sixth folding part enclose to form a second avoiding space, and part of the fifth folding part and the sixth folding part penetrates to form a second fixed slot.
[0009] In an optional mode, the first vertical plate is provided with a connecting lock hole at one end close to the first fixed plate; the first folding part is integrally arranged with the first vertical plate, and the third folding part is provided with a lock catch on the side away from the second folding part, which is inserted into the connecting lock hole.
[0010] In an optional mode, the lock catch comprises a first bending part, a horizontal part and a second bending part connected in sequence, the horizontal part is arranged through the connecting lock hole, and the first bending part and the second bending part abut against the surface of the first vertical plate away from the second folding part in the third direction.
[0011] In an optional mode, the packaging box further comprises a bottom plate placed at the bottom of the containing cavity, and the first vertical plate, the second vertical plate, the first fixed plate, the second fixed plate and the plurality of horizontal plates are placed on the bottom plate.
[0012] In an optional mode, the first vertical plate, the second vertical plate, the first fixed plate, the second fixed plate and the plurality of horizontal plates are paper plates.
[0013] In an optional mode, the first vertical plate is provided with a first clamping slot on the side away from the bottom of the containing cavity, and the horizontal plate is provided with a second clamping slot on the side toward the bottom of the containing cavity, and the second clamping slot is clamped in the first clamping slot.
[0014] In an optional mode, the horizontal plate is provided with a first clamping opening on the side toward the bottom of the containing cavity, the first clamping opening is communicated with the second clamping slot, and the first fixed plate is clamped in the first clamping opening.
[0015] The beneficial effects of the embodiments of the present application are: different from the prior art, the embodiments of the present application are provided with a box, a first vertical plate, a first fixed plate and a plurality of transverse plates. Among them, the box is provided with a containing cavity and an opening communicating with the containing cavity, the first vertical plate is arranged in the containing cavity, a plurality of transverse plates are arranged in the containing cavity along the first direction, the plurality of transverse plates are connected with the first vertical plate in a cross manner, along the first direction, a limiting groove is arranged between two adjacent transverse plates, the slot of the limiting groove faces the opening along the second direction, the first fixed plate is connected with the first vertical plate and abuts against the plurality of transverse plates, the first fixed plate is used for bearing the circuit board, and the user can place the circuit board to be packaged in the limiting groove from the opening on the box, the limiting groove is used for limiting the circuit board, and the first fixed plate is used for bearing the circuit board, so as to realize the limiting and fixing of the circuit board in the limiting groove, thereby reducing the shaking and collision of the circuit board in the transportation process, and further reducing the damage of the circuit board. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.
[0017] Figure 1 is a schematic diagram of the overall structure of the packaging box of the embodiments of the present application;
[0018] Figure 2 is a schematic diagram of the overall structure of the packaging box of the embodiments of the present application;
[0019] Figure 3 is a schematic diagram of the partial structure of the packaging box of the embodiments of the present application;
[0020] Figure 4 is a schematic diagram of the partial structure of the packaging box of the embodiments of the present application;
[0021] Figure 5 is another schematic diagram of the partial structure of the packaging box of the embodiments of the present application. DETAILED DESCRIPTION
[0022] In order to facilitate the understanding of the present application, the present application will be described in more detail below in combination with the drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The term "vertical" used in the present specification is only for illustrative purposes.
[0023] Unless otherwise defined, all technical and scientific terms used in the present disclosure have the same meanings as those commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. All publications, patent applications, patents, and other references mentioned in this specification are herein incorporated by reference in their entirety for the purpose of describing and disclosing, for example, the methodologies described in such publications, which might provide useful background to the present application.
[0024] Unless otherwise defined, "a plurality" as used herein refers to two or more.
[0025] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as there is no conflict.
[0026] It should be noted that the packaging box in the present application is described by taking the application to a circuit board as an example, and the circuit board includes but is not limited to a thin plate, a PCBA board, etc. It can be understood that the packaging box in the present application can also be used to package other objects.
[0027] Please refer to Figure 1 and Figure 2 , the packaging box 1000 includes a box body 10, a first vertical plate 20, a first fixed plate 30, and a plurality of horizontal plates 40. Among them, the first vertical plate 20, the first fixed plate 30, and the plurality of horizontal plates 40 are all arranged in the box body 10, the plurality of horizontal plates 40 are connected with the first vertical plate 20 in cross, the first fixed plate 30 is connected with the first vertical plate 20 and abuts against the plurality of horizontal plates 40, and the first fixed plate 30 is used to carry the circuit board. In order to better describe the structure of the packaging box 1000, it will be described in combination with the first direction X, the second direction Z, and the third direction Y, wherein the first direction X is perpendicular to the second direction Z, the second direction Z is perpendicular to the third direction Y, and the first direction X is arranged at an angle with the third direction Y. It can be understood that the angle between the first direction X and the third direction Y can be 90 degrees, an acute angle, or an obtuse angle.
[0028] In some embodiments, for the above-mentioned box body 10, as shown in Figure 1 and Figure 2 , the box body 10 is provided with a receiving cavity 10a and an opening 10b communicating with the receiving cavity 10a, and the first vertical plate 20, the first fixed plate 30, and the plurality of horizontal plates 40 can be installed in the receiving cavity 10a from the above-mentioned opening 10b.
[0029] In some embodiments, the box body 10 includes a bottom cover 101, an upper cover 102, and a plurality of side plates 103 connected in sequence, the bottom cover 101 is connected to one end of the plurality of side plates 103, the upper cover 102 is connected to the other end of the plurality of side plates 103, the upper cover 102 can be folded relative to the plurality of side plates 103, and the upper cover 102 can open or close the above-mentioned opening 10b.
[0030] In some embodiments, the upper cover 102 comprises a first packaging edge 1021, a second packaging edge 1022, a third packaging edge 1023 and a fourth packaging edge 1024, all of which can be folded relative to the plurality of side plates 103, the first packaging edge 1021 and the third packaging edge 1023 are oppositely arranged along the third direction Y, and the second packaging edge 1022 and the fourth packaging edge 1024 are oppositely arranged along the first direction X, wherein the first packaging edge 1021 and the third packaging edge 1023 are located in the width direction of the box 10, and the second packaging edge 1022 and the fourth packaging edge 1024 are located in the length direction of the box 10. In a specific packaging process, the first packaging edge 1021 and the third packaging edge 1023 are first folded towards the direction close to the accommodating cavity 10a, and then the second packaging edge 1022 and the fourth packaging edge 1024 are folded towards the direction close to the accommodating cavity 10a, and the second packaging edge 1022 and the fourth packaging edge 1024 are pressed on the first packaging edge 1021 and the third packaging edge 1023.
[0031] In some embodiments, the box 10 is made of paperboard material, and the bottom cover 101, the upper cover 102 and the plurality of side plates 103 are integrally formed.
[0032] In some embodiments, the structure of the bottom cover 101 is the same as that of the upper cover 102, and the structure of the bottom cover 101 can refer to the structure of the upper cover 102 described above, which will not be repeated here.
[0033] For the first vertical plate 20, the first fixed plate 30 and the plurality of horizontal plates 40 described above, as shown in Figures 2-4 the first vertical plate 20 is arranged in the accommodating cavity 10a, the plurality of horizontal plates 40 are arranged in the accommodating cavity 10a in the first direction X, the plurality of horizontal plates 40 are connected with the first vertical plate 20, and between two adjacent horizontal plates 40 in the first direction X, a limiting groove 40a is arranged, the slot of the limiting groove 40a is open in the second direction Z towards the opening 10b, the first fixed plate 30 is connected with the first vertical plate 20 and abuts against the plurality of horizontal plates 40, and the first fixed plate 30 is used to carry the circuit board. Wherein, the circuit board to be packaged can be placed in the limiting groove 40a from the opening 10b on the box 10, the circuit board is limited by the limiting groove 40a, and the circuit board is carried by the first fixed plate 30, so as to realize the limiting and fixing of the circuit board in the limiting groove 40a, thereby reducing the shaking and collision of the circuit board in the transportation process, and further reducing the damage of the circuit board.
[0034] In some embodiments, please refer to Figure 5The first fixed plate 30 is wound to form a first avoiding space 30a. The first fixed plate 30 is provided with a first fixed slot 30b. The first fixed slot 30b is communicated with the first avoiding space 30a and the limiting slot 40a. The first fixed slot 30b is used for placing the circuit board. The first avoiding space 30a can provide avoidance for the circuit board placed in the first fixed slot 30b. In the actual packaging process, the circuit board is placed in the limiting slot 40a from the opening 10b on the box body 10. Then, the side of the circuit board close to the bottom cover 101 is at least partially fixed in the first fixed slot 30b. The circuit board is limited by the limiting slot 40a and fixed by the first fixed slot 30b. Thus, the shaking and collision of the circuit board in the transportation process is reduced, and the damage of the circuit board is reduced.
[0035] In some embodiments, the first fixed plate 30 comprises a first folding part 301, a second folding part 302 and a third folding part 303 connected in sequence. The side of the first folding part 301 away from the second folding part 302 is connected with the first vertical plate 20. The side of the third folding part 303 away from the second folding part 302 is connected with the first vertical plate 20. The second folding part 302 is arranged opposite to the first vertical plate 20. The third folding part 303 is arranged opposite to the first folding part 301. The first vertical plate 20, the first folding part 301, the second folding part 302 and the third folding part 303 enclose the first avoiding space 30a. Part of the second folding part 302 and the third folding part 303 penetrates to form the first fixed slot 30b.
[0036] In some embodiments, the end of the first vertical plate 20 close to the first fixed plate 30 is provided with a connecting lock hole 202. The first folding part 301 is integrally arranged with the first vertical plate 20. The side of the third folding part 303 away from the second folding part 302 is provided with a lock buckle 3031. The lock buckle 3031 is inserted into the connecting lock hole 202. The lock buckle 3031 cooperates with the connecting lock hole 202 to lock the first fixed plate 30 on the first vertical plate 20.
[0037] In some embodiments, the first vertical plate 20 and the first fixed plate 30 are integrally formed. Thus, the first vertical plate 20 and the first fixed plate 30 are located on the same plate structure after being unfolded, which is convenient for production and assembly.
[0038] In some embodiments, the locking buckle 3031 comprises a first bending portion 30311, a horizontal portion 30312 and a second bending portion 30313 connected in sequence, the first horizontal portion 30312 is arranged in the connecting lock hole 202, the first bending portion 30311 and the second bending portion 30313 abut the surface of the first vertical plate 20 away from the second folding portion 302 along the third direction Y, the first bending portion 30311 and the second bending portion 30313 can limit the locking buckle 3031 from exiting the connecting lock hole 202, thereby forming a self-locking structure, thereby ensuring the connection stability between the first vertical plate 20 and the first fixed plate 30.
[0039] In some embodiments, the first vertical plate 20 is provided with a first clamping groove 201 on the side away from the bottom of the accommodating cavity 10a, and the horizontal plate 40 is provided with a second clamping groove 401 on the side toward the bottom of the accommodating cavity 10a, the second clamping groove 401 is clamped in the first clamping groove 201, thereby realizing the detachable connection between the first vertical plate 20 and the horizontal plate 40. In this way, before packaging, the first vertical plate 20 and the horizontal plate 40 are used as raw materials, and the first vertical plate 20 and the horizontal plate 40 are in a separated state, at which time they can be flattened separately, facilitating subsequent transportation. It can be understood that the connection mode between the first vertical plate 20 and the horizontal plate 40 is not limited to the above, but can also be other modes, such as gluing.
[0040] In some embodiments, the horizontal plate 40 is provided with a first clamping hole 402 on the side toward the bottom of the accommodating cavity 10a, the first clamping hole 402 is in communication with the second clamping groove 401, and the first fixed plate 30 is clamped in the first clamping hole 402, thereby realizing the connection between the first fixed plate 30 and the horizontal plate 40.
[0041] In some embodiments, as shown in Figures 2-4 The packaging box 1000 further comprises a second vertical plate 50, a second fixed plate 60 and a bottom plate 70, the bottom plate 70 is placed at the bottom of the accommodating cavity 10a, the first vertical plate 20, the second vertical plate 50, the first fixed plate 30, the second fixed plate 60 and the plurality of horizontal plates 40 are placed on the bottom plate 70, the second vertical plate 50 is oppositely arranged with the first vertical plate 20 along the third direction Y, the second vertical plate 50 is cross-connected with the plurality of horizontal plates 40, the second fixed plate 60 is connected with the second vertical plate 50 and abuts against the plurality of horizontal plates 40, the second fixed plate 60 is used for carrying the circuit board to more stably position and fix the entire circuit board in the limiting groove 40a, reducing the collision or sliding during transportation, thereby reducing the damage of the product.
[0042] In some embodiments, please refer to Figure 5The second fixing plate 60 is wound to form a second avoiding space 60a. The second fixing plate 60 is provided with a second fixing groove 60b. The second fixing groove 60b is communicated with the second avoiding space 60a and the limiting groove 40a. The second fixing groove 60b is used for placing the circuit board. The second avoiding space 60a can provide avoidance for the circuit board placed in the second fixing groove 60b. In the actual packaging process, the circuit board is placed in the limiting groove 40a from the opening 10b on the box body 10. Then, the side of the circuit board close to the bottom cover 101 is at least partially fixed in the second fixing groove 60b. The circuit board is limited by the limiting groove 40a and fixed by the first fixing groove 30b and the second fixing groove 60b. The circuit board can be more stably limited in the limiting groove 40a. Thus, the shaking and collision of the circuit board in the transportation process is reduced. The damage of the circuit board is reduced.
[0043] In some embodiments, the second fixing plate 60 comprises a fourth folding part 601, a fifth folding part 602 and a sixth folding part 603 connected in sequence. The side of the fourth folding part 601 away from the fifth folding part 602 is connected with the second vertical plate 50. The side of the sixth folding part 603 away from the fifth folding part 602 is connected with the second vertical plate 50. The fifth folding part 602 is arranged opposite to the second vertical plate 50. The sixth folding part 603 is arranged opposite to the fourth folding part 601. The second vertical plate 50, the fourth folding part 601, the fifth folding part 602 and the sixth folding part 603 enclose to form the second avoiding space 60a. Part of the fifth folding part 602 and the sixth folding part 603 penetrates to form the second fixing groove 60b.
[0044] In some embodiments, the second vertical plate 50 and the second fixing plate 60 are integrally formed. Thus, the second vertical plate 50 and the second fixing plate 60 are located on the same plate structure after unfolding, which is convenient for production and assembly.
[0045] In some embodiments, the first vertical plate 20, the second vertical plate 50, the first fixing plate 30, the second fixing plate 60 and the plurality of horizontal plates 40 are paper plates. In this way, each component in the packaging box can be in a flat state before assembly, which saves transportation space and reduces transportation cost. The paper material is energy-saving and environmentally friendly, and can be recycled. The paper material has good biodegradability, and has relatively light burden on the environment after use, which meets the demand of sustainable development.
[0046] In some embodiments, the bottom plate 70 is a paper plate.
[0047] It should be noted that the first fixed plate 30 and the first vertical plate 20 are located on the same paperboard after unfolding, in order to form the first fixed plate 30, the first folding part 301, the second folding part 302 and the third folding part 303 are folded correspondingly, and then the lock buckle 3031 is inserted into the connecting lock hole 202 on the first vertical plate 20, so as to form the first fixed plate 30 in a rectangular structure.
[0048] It can be understood that under the joint action of the adjacent horizontal plate 40 and the first vertical plate 20 and the second vertical plate 50, the adjacent horizontal plate 40 and the first vertical plate 20 and the second vertical plate 50 can be perpendicular or not perpendicular, so that the cross section of the single limiting groove 40a is a parallelogram, for example, a rectangle, in some other embodiments, the cross section of the single limiting groove 40a can also be a square, and the number of the first vertical plate 20 and the second vertical plate 50 can be multiple, the multiple first vertical plates 20 are arranged at intervals, and the multiple second vertical plates 50 are arranged at intervals.
[0049] In some embodiments, the second vertical plate 50 is provided with a third clamping groove 501 away from the bottom of the accommodating cavity 10a, and the horizontal plate 40 is provided with a fourth clamping groove 403 towards the bottom of the accommodating cavity 10a, and the fourth clamping groove 403 is clamped in the third clamping groove 501. Thus, the detachable connection between the second vertical plate 50 and the horizontal plate 40 is realized. In this way, before packaging, the second vertical plate 50 and the horizontal plate 40 are used as materials to be assembled, and the second vertical plate 50 and the horizontal plate 40 are in a separated state, at which time they can be respectively flattened, facilitating subsequent transportation. It can be understood that the connection mode between the second vertical plate 50 and the horizontal plate 40 is not limited to the above, but can also be other modes, such as gluing.
[0050] In some embodiments, the horizontal plate 40 is further provided with a second clamping hole 404 close to the bottom of the accommodating cavity 10a, the second clamping hole 404 is in communication with the fourth clamping groove 403, and the second fixed plate 60 is clamped in the second clamping hole 404, so as to realize the connection between the second fixed plate 60 and the horizontal plate 40.
[0051] It should be noted that the function and structure of the second vertical plate 50 are the same as those of the first vertical plate 20, the function and structure of the second fixed plate 60 can be referred to the function and structure of the first fixed plate 30, and the function and structure of the second vertical plate 50 can be referred to the function and structure of the first vertical plate 20, which will not be described here.
[0052] In the embodiment of the present application, the box 10, the first vertical plate 20, the first fixed plate 30 and the plurality of horizontal plates 40 are arranged. The box 10 is provided with a containing cavity 10a and an opening 10b communicating with the containing cavity 10a, the first vertical plate 20 is arranged in the containing cavity 10a, the plurality of horizontal plates 40 are arranged in the containing cavity 10a along the first direction X, the plurality of horizontal plates 40 are connected with the first vertical plate 20 transversely, the limiting grooves 40a are arranged between two adjacent horizontal plates 40 along the first direction X, the slots of the limiting grooves 40a are directed to the opening 10b along the second direction Z, the first fixed plate 30 is connected with the first vertical plate 20 and abuts against the plurality of horizontal plates 40, the first fixed plate 30 is used for carrying the circuit board, the user can place the circuit board to be packaged into the limiting groove 40a from the opening 10b on the box 10, the circuit board is limited by the limiting groove 40a and carried by the first fixed plate 30, so that the circuit board is limited and fixed in the limiting groove 40a, thereby reducing the shaking and collision of the circuit board in the transportation process, and further reducing the damage of the circuit board.
[0053] The above is only the embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent flow transformation using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A packaging box adapted to accommodate a wiring board, characterized by, The package box comprises: a box body provided with a containing cavity and an opening communicating with the containing cavity; a first vertical plate arranged in the containing cavity; a plurality of horizontal plates arranged in the containing cavity in a first direction, the plurality of horizontal plates and the first vertical plate are cross-connected, between two adjacent horizontal plates in the first direction, a limiting groove is arranged, the groove opening of the limiting groove is directed to the opening in a second direction, and the first direction and the second direction are perpendicular; and a first fixed plate connected with the first vertical plate and abutting against the plurality of horizontal plates, the first fixed plate is used for bearing the circuit board.
2. The package box according to claim 1, wherein the package box further comprises a second vertical plate and a second fixed plate, the second vertical plate is arranged opposite to the first vertical plate in a third direction, the second vertical plate and the plurality of horizontal plates are cross-connected, the second fixed plate is arranged at the bottom of the containing cavity, the second fixed plate is connected with the second vertical plate and abuts against the plurality of horizontal plates, and the second fixed plate is used for bearing the circuit board; the third direction is perpendicular to the second direction, and the third direction is arranged at an angle with the first direction.
3. The package box according to claim 2, wherein the first fixed plate is wound to form a first avoiding space, the first fixed plate is provided with a first fixed groove penetrating through, the first fixed groove communicates the first avoiding space and the limiting groove, and the first fixed groove is used for placing the circuit board; the second fixed plate is wound to form a second avoiding space, the second fixed plate is provided with a second fixed groove penetrating through, the second fixed groove communicates the second avoiding space and the limiting groove, and the second fixed groove is used for placing the circuit board.
4. The package box according to claim 3, wherein the first fixed plate comprises a first folding part, a second folding part and a third folding part connected in sequence, the side of the first folding part away from the second folding part is connected with the first vertical plate, the side of the third folding part away from the second folding part is connected with the first vertical plate, the second folding part is arranged opposite to the first vertical plate, the third folding part is arranged opposite to the first folding part, the first vertical plate, the first folding part, the second folding part and the third folding part enclose the first avoiding space, and part of the second folding part and the third folding part penetrates to form the first fixed groove; the second fixed plate comprises a fourth folding part, a fifth folding part and a sixth folding part connected in sequence, the side of the fourth folding part away from the fifth folding part is connected with the second vertical plate, the side of the sixth folding part away from the fifth folding part is connected with the second vertical plate, the fifth folding part is arranged opposite to the second vertical plate, the sixth folding part is arranged opposite to the fourth folding part, the second vertical plate, the fourth folding part, the fifth folding part and the sixth folding part enclose the second avoiding space, and part of the fifth folding part and the sixth folding part penetrates to form the second fixed groove.
5. The packaging box of claim 4, wherein, the first vertical plate is provided with a connecting lock hole near one end of the first fixed plate; the first folding part is integrally provided with the first vertical plate, and the third folding part is provided with a lock catch away from one side of the second folding part, the lock catch being inserted into the connecting lock hole.
6. The packaging box of claim 5, wherein, the lock catch comprises a first bending part, a horizontal part and a second bending part connected in sequence, the horizontal part being provided through the connecting lock hole, and the first bending part and the second bending part abutting against the surface of the first vertical plate away from the second folding part in the third direction.
7. The packaging box of any one of claims 2 to 6, wherein, the packaging box further comprises a bottom plate placed at the bottom of the accommodating cavity, and the first vertical plate, the second vertical plate, the first fixed plate, the second fixed plate and the plurality of horizontal plates are placed on the bottom plate.
8. The packaging box of any one of claims 2 to 6, wherein, the first vertical plate, the second vertical plate, the first fixed plate, the second fixed plate and the plurality of horizontal plates are paper plates.
9. The packaging box of any one of claims 1 to 6, wherein, the first vertical plate is provided with a first clamping groove away from one side of the bottom of the accommodating cavity, and the horizontal plate is provided with a second clamping groove toward one side of the bottom of the accommodating cavity, the second clamping groove being clamped in the first clamping groove.
10. The packaging box of claim 9, wherein, the horizontal plate is provided with a first clamping opening toward one side of the bottom of the accommodating cavity, the first clamping opening being in communication with the second clamping groove, and the first fixed plate is clamped in the first clamping opening.