CN219269160U

CN219269160U - PCB circuit board with anti-electromagnetic interference

Info

Publication number: CN219269160U
Application number: CN202223230877.9U
Authority: CN
Inventors: 刘建辉; 谢春雄; 刘国林
Original assignee: Yunfeng Kaiping Electronic Products Co ltd
Current assignee: Yunfeng Kaiping Electronic Products Co ltd
Priority date: 2022-12-03
Filing date: 2022-12-03
Publication date: 2023-06-27
Anticipated expiration: 2032-12-03

Abstract

The utility model relates to the technical field of guide devices, and provides a PCB (printed Circuit Board) with electromagnetic interference resistance, which comprises a main body, a top plate and a bottom plate, wherein one side of the main body is provided with a first metal guide sheet, the other side of the main body is provided with a second metal guide sheet, and a via hole vertically penetrates through the top plate, a power layer, a signal layer, a ground layer and the bottom plate in sequence. According to the utility model, the first metal guide sheet and the second metal guide sheet are arranged, the clamping claws are integrally formed on one sides of the first metal guide sheet and the second metal guide sheet, and simultaneously, under the mutual matching of the clamping claws and the clamping claw grooves, the clamping claws are respectively tightly attached to the top plate, the power supply layer, the signal layer, the grounding layer and the bottom plate, so that electromagnetic interference signals received among the layers are transmitted to the grounding layer, the protection of a main body is realized, the electromagnetic interference resistance is better, meanwhile, the artificial graphite layer and the metal mesh layer also have good electromagnetic interference resistance, and the electromagnetic interference resistance of the main body is simultaneously improved by the multiple modes, so that the electromagnetic interference resistance of the main body is greatly improved, and the use is facilitated.

Description

PCB circuit board with anti-electromagnetic interference

Technical Field

The utility model relates to the technical field of PCB (printed circuit board), in particular to a PCB with electromagnetic interference resistance.

Background

Along with the continuous development of society and the continuous progress of the electric industry, various electronic components are continuously innovated, and a PCB (printed circuit board) is one of important electronic components, is a support body of the electronic components and is a carrier for electrically connecting the electronic components, and various products in the market at present basically can meet the use demands of people, but still have a certain problem in the actual use process;

1. the traditional PCB circuit board is often subjected to external electromagnetic interference when in use, so that the signal transmission of the circuit is interfered, the use is not facilitated, the common problems for overcoming the defects are that an anti-electromagnetic interference coating such as inorganic silicate is coated, but the mode is relatively single, the anti-electromagnetic interference effect is poor, and the coating is worn after long-time use, so that the electromagnetic interference is weaker;

2. traditional PCB circuit board preparation is mostly through gluing mode makes interconnect between each layer, but if use powerful adhesive, often lead to PCB circuit board's heat dissipation relatively poor, and if use some better adhesive of heat dissipation, for example heat conduction silica gel, when satisfying the heat dissipation, the self stickness can receive certain influence, and the stickness is weaker, easily leads to the PCB circuit board to appear cracking phenomenon, and the bonding is infirm, influences the use

The above mentioned problems are all easy to generate, so there is a need for a PCB with electromagnetic interference resistance to meet the use requirements of people.

Disclosure of Invention

First, the technical problem to be solved

The utility model aims to provide a PCB with electromagnetic interference resistance, which is used for solving the defects that the existing PCB is poor in electromagnetic interference resistance, and when the heat dissipation performance is met, the viscosity of the PCB is affected to a certain extent, the viscosity is weaker, the cracking phenomenon of the PCB is easy to occur, and the bonding is unstable.

(II) summary of the utility model

In order to solve the technical problems, the utility model provides the following technical scheme: the PCB with the electromagnetic interference resistance comprises a main body, a top plate and a bottom plate, wherein a first metal guide piece is arranged on one side of the main body, a second metal guide piece is arranged on the other side of the main body, clamping grooves are symmetrically formed in one side, far away from the main body, of the first metal guide piece, clamping blocks matched with the clamping grooves are symmetrically arranged on one side, far away from the main body, of the second metal guide piece, signal layers are uniformly fixed on the other sides of the first metal guide piece and the second metal guide piece, and clamping jaw grooves matched with the signal layers are uniformly formed in the two sides of the main body;

the top end of the main body is provided with a top plate, the bottom end of the top plate is adhered with a power layer through an adhesive layer, the bottom end of the top plate is adhered with a signal layer through the adhesive layer, the bottom end of the main body is provided with a bottom plate, and a grounding layer is adhered between the bottom plate and the signal layer through the adhesive layer;

the middle position of main part evenly is provided with the via hole, and the via hole vertically runs through roof, power layer, signal layer, ground layer and bottom plate in proper order.

Preferably, the first metal guide piece, the second metal guide piece and the clamping jaw are all of an integrated forming structure. Is beneficial to forming the whole body and being beneficial to being clamped with the main body.

Preferably, the distance between the clamping jaws at two ends of the first metal guide piece and the second metal guide piece is equal to the thickness of the main body. Facilitating the tight clamping of the main body.

Preferably, an artificial graphite sheet layer is arranged at the top end of the top plate. The artificial graphite sheet has good electromagnetic interference resistance and good heat dissipation.

Preferably, the material of the via hole is pure copper material, and the inner wall of the via hole is coated with an antistatic coating, and the antistatic coating can be a wave-absorbing heat-conducting powder coating. The electromagnetic interference resistance is realized.

Preferably, the adhesive layer is a heat-conducting silica gel layer. The heat-conducting silica gel layer has good heat dissipation, and is beneficial to heat dissipation of the main body.

Preferably, a metal net layer is fixed at the bottom end of the bottom plate, and the metal net layer is connected with the clamping jaw through a lead wire. Is beneficial to electromagnetic interference resistance.

(III) beneficial effects

The PCB circuit board with electromagnetic interference resistance provided by the utility model has the advantages that:

the clamping claws are integrally formed on one sides of the first metal guide sheet and the second metal guide sheet, and the clamping claw grooves matched with the clamping claws are symmetrically formed on two sides of the main body, so that the clamping claws are respectively tightly attached to the top plate, the power supply layer, the signal layer, the grounding layer and the bottom plate, electromagnetic interference signals received between the layers are transmitted to the grounding layer, the main body is protected, the electromagnetic interference resistance is better, meanwhile, the artificial graphite layer and the metal mesh layer are arranged, the artificial graphite layer has good electromagnetic interference resistance, and good heat dissipation performance, and is beneficial to heat dissipation of the main body, electromagnetic interference resistance is simultaneously improved, and the use is facilitated;

the adhesive layer is made of the heat-conducting silica gel, the heat-conducting silica gel has good heat dissipation, and the first metal guide sheet, the second metal guide sheet and the clamping jaw are connected and fixed with the clamping jaw groove under the action of the clamping jaw, so that the electromagnetic interference type is transmitted on one hand, the two sides of the main body can be tightly clamped under the action of the clamping jaw on the other hand, the main body is reinforced, the main body can be prevented from cracking and being damaged while the good heat dissipation is kept, and the main body is beneficial to use;

the clamping grooves are symmetrically formed in one side of the first metal guide piece, and the clamping blocks matched with the clamping grooves are symmetrically arranged in one side of the second metal guide piece, so that the first metal guide piece and the second metal guide piece can be spliced for use, and the main bodies can be combined for use.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a main body section of the present utility model;

FIG. 2 is a schematic cross-sectional elevation view of the main body of the present utility model;

FIG. 3 is a schematic diagram of a main assembly structure of the present utility model;

FIG. 4 is a schematic view of a first metal guide plate according to the present utility model;

fig. 5 is a schematic view of a second metal guide plate according to the present utility model.

Reference numerals in the drawings illustrate: 1. a main body; 2. a first metal guide piece; 3. a second metal guide piece; 4. a clamping block; 5. a top plate; 6. a signal layer; 7. a ground layer; 8. a clamping groove; 9. a via hole; 10. artificial graphite flakes; 11. an adhesive layer; 12. a power plane; 13. a claw groove; 14. a bottom plate; 15. a metal mesh layer; 16. and (3) clamping jaws.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by one of ordinary skill in the art without inventive faculty, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-5, the PCB with electromagnetic interference resistance provided by the utility model comprises a main body 1, a top plate 5 and a bottom plate 14, wherein a first metal guide piece 2 is arranged on one side of the main body 1, a second metal guide piece 3 is arranged on the other side of the main body 1, clamping grooves 8 are symmetrically arranged on one side of the first metal guide piece 2 far away from the main body 1, clamping blocks 4 mutually matched with the clamping grooves 8 are symmetrically arranged on one side of the second metal guide piece 3 far away from the main body 1, the first metal guide piece 2, the second metal guide piece 3 and clamping claws 16 are of an integrated structure, the whole is conveniently clamped with the main body 1, reinforcement connection of the main body 1 is realized, the distance between the clamping claws 16 on two ends of the first metal guide piece 2 and the second metal guide piece 3 is equal to the thickness of the main body 1, so that the clamping claws 16 can tightly clamp the main body 1, cracking of the main body 1 is prevented, the other sides of the first metal guide piece 2 and the second metal guide piece 3 are uniformly fixed with a signal layer 6, and the clamping claws 13 mutually matched with the signal layer 6 are uniformly arranged in the two sides of the main body 1;

the top of the main body 1 is provided with a top plate 5, the top of the top plate 5 is provided with an artificial graphite sheet layer 10, the bottom of the top plate 5 is adhered with a power supply layer 12 through an adhesive layer 11, the bottom of the top plate 5 is adhered with a signal layer 6 through the adhesive layer 11, the bottom of the main body 1 is provided with a bottom plate 14, a grounding layer 7 is adhered between the bottom plate 14 and the signal layer 6 through the adhesive layer 11, the bottom of the bottom plate 14 is fixedly provided with a metal net layer 15, the metal net layer 15 is connected with a claw 16 through a lead wire, the metal net layer 15 has good electromagnetic interference resistance, and a received electromagnetic interference signal can be transmitted to the grounding layer 7 left and right through the claw 16, so that the protection of the main body 1 is realized;

the intermediate position of main part 1 evenly is provided with via hole 9, and via hole 9 vertically runs through roof 5 in proper order, power layer 12, signal layer 6, ground layer 7 and bottom plate 14, the material of via hole 9 is pure copper material, pure copper material has good signal transmission performance, and the inner wall of via hole 9 is last to be coated with antistatic coating, this antistatic coating can be the wave-absorbing heat conduction powder coating, wave-absorbing heat conduction powder can absorb the electromagnetic radiation who revealed, reach the purpose of eliminating electromagnetic interference, adhesive layer 11 is the heat conduction silica gel layer, the heat conduction silica gel layer has good thermal diffusivity, make main part 1 in long-time use, the heat easily gives off, be unfavorable for accumulating heat, avoid causing the damage of main part 1, increase of service life.

The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present utility model without undue burden.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. PCB circuit board with anti electromagnetic interference, including main part (1), roof (5) and bottom plate (14), its characterized in that: one side of the main body (1) is provided with a first metal guide piece (2), the other side of the main body (1) is provided with a second metal guide piece (3), one side, far away from the main body (1), of the first metal guide piece (2) is symmetrically provided with a clamping groove (8), one side, far away from the main body (1), of the second metal guide piece (3) is symmetrically provided with a clamping block (4) matched with the clamping groove (8), signal layers (6) are uniformly fixed on the other sides of the first metal guide piece (2) and the second metal guide piece (3), and claw grooves (13) matched with the signal layers (6) are uniformly formed in the two sides of the main body (1);

the top end of the main body (1) is provided with a top plate (5), the bottom end of the top plate (5) is adhered with a power supply layer (12) through an adhesive layer (11), the bottom end of the top plate (5) is adhered with a signal layer (6) through the adhesive layer (11), the bottom end of the main body (1) is provided with a bottom plate (14), and a grounding layer (7) is adhered between the bottom plate (14) and the signal layer (6) through the adhesive layer (11);

the middle position of main part (1) evenly is provided with via hole (9), and via hole (9) vertically runs through roof (5), power layer (12), signal layer (6), ground plane (7) and bottom plate (14) in proper order.

2. The PCB with electromagnetic interference resistance of claim 1, wherein: the first metal guide sheet (2), the second metal guide sheet (3) and the clamping jaw (16) are of an integrated forming structure.

3. The PCB with electromagnetic interference resistance of claim 2, wherein: the distance between the clamping claws (16) at the two ends of the first metal guide sheet (2) and the second metal guide sheet (3) is equal to the thickness of the main body (1).

4. The PCB with electromagnetic interference resistance of claim 1, wherein: an artificial graphite sheet layer (10) is arranged at the top end of the top plate (5).

5. The PCB with electromagnetic interference resistance of claim 1, wherein: the material of the via hole (9) is pure copper material, and the inner wall of the via hole (9) is coated with an antistatic coating which can be a wave-absorbing heat-conducting powder coating.

6. The PCB with electromagnetic interference resistance of claim 1, wherein: the adhesive layer (11) is a heat-conducting silica gel layer.

7. The PCB with electromagnetic interference resistance of claim 1, wherein: the bottom end of the bottom plate (14) is fixed with a metal net layer (15), and the metal net layer (15) is connected with the clamping jaw (16) through a lead.