CN211352973U - Anti-electromagnetic interference device of circuit board - Google Patents

Abstract

The utility model discloses an anti-electromagnetic interference device of a circuit board, which comprises a fixing plate, the fixing plate is made of elastic thermal insulation material, four corners of the top of the fixing plate are all provided with fixing holes, the left side of the fixing plate is fixed with a reactor through screws, the middle of the right side of the reactor is provided with a power interface, the right side of the reactor is provided with a main body, the outer side of the main body is provided with three layers of magnetic rings, the magnetic rings are uniformly arranged up and down, the bottom of the main body is provided with a heat dissipation ring, the heat dissipation ring is respectively communicated with the top of an installation port and a heat dissipation channel, the heat dissipation channel is in an M shape, the bottom of the main body is provided with an installation port, the installation port is in a spherical shape, the outer side of the bottom of the installation port is provided; the utility model has the advantages of circuit filtering, multilayer eliminate electromagnetism, radiating rate are fast, shock-absorbing capacity is strong.

Description

Anti-electromagnetic interference device of circuit board

Technical Field

The utility model relates to an electricity technical field specifically is an anti electromagnetic interference device of circuit board.

Background

The circuit board has the name: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, PCB board, aluminum substrate, high frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, printed (copper etching technology) circuit board, etc. The circuit board enables the circuit to be miniaturized and visualized, and plays an important role in batch production of fixed circuits and optimization of electric appliance layout.

Along with the appearance of electron, the circuit board more and more becomes the important subassembly in the electron device, but in the in-process that the circuit board used, often can receive the interference because of external electromagnetism, but in present anti-electromagnetic interference part, can't carry out the elimination of multilayer to the electromagnetic wave to at anti-interference in-process, can't guarantee radiating ability, and at the in-process of installation, often all carry out the shock attenuation on the circuit board, can't guarantee comprehensive shock attenuation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti electromagnetic interference device of circuit board has circuit filtering, multilayer elimination electromagnetism, the radiating rate is fast, the advantage that shock-absorbing capacity is strong, has solved the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a circuit board anti-electromagnetic interference device, includes the fixed plate, the fixed plate is made for elastic thermal insulation material, the fixed orifices has all been seted up in fixed plate top four corners, the fixed plate left side has the reactor through the fix with screw, be equipped with power source in the middle of the reactor right side, the reactor right side is equipped with the main part, the installing port has been seted up to the main part bottom, the installing port is the ball-type, the installing port bottom outside is equipped with the rand, the main part inboard is equipped with the demagnetization layer, be equipped with heat dissipation channel between demagnetization layer and the main part, the installation department has been seted up with the main.

Preferably, three layers of magnetic rings are arranged on the outer side of the main body, the magnetic rings are uniformly arranged up and down, a heat dissipation ring is arranged at the bottom of the main body, the heat dissipation ring is respectively communicated with the top of the mounting opening and a heat dissipation channel, and the heat dissipation channel is M-shaped.

Preferably, the main body is divided into a rebound layer, a shielding layer and a magnetic absorption layer, the rebound layer, the shielding layer and the magnetic absorption layer are uniformly arranged from outside to inside, and the demagnetizing layer and the main body are made of the same material.

Preferably, a power outlet is arranged in front of the right end of the mounting position, a ground connection port is arranged behind the power outlet, and the mounting position is not communicated with the fixing position.

Preferably, both sides of the top of the demagnetizing layer are circular arcs.

Preferably, the reactor model is: HEL-37.

Preferably, the power interface is connected with a power supply through a cable, the power interface is connected with a power outlet through a cable, and the ground port is connected with a ground wire.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. a circuit board anti-electromagnetic interference device dissipates heat through a heat dissipation ring, volatilizes heat when the circuit board works, dissipates heat through a heat dissipation channel with a concave route, increases the speed of heat dissipation, and prevents electromagnetism from entering a mounting port through the heat dissipation ring to influence work;

2. a circuit board anti-electromagnetic interference device adopts a rebound layer to rebound electromagnetism, performs primary electromagnetism blocking, shields the electromagnetism through a shielding layer, performs secondary electromagnetism blocking, absorbs the electromagnetism through a magnetic absorption layer, completely absorbs the electromagnetism, prevents electromagnetic interference, and adopts a magnetic ring to block the electromagnetism, thereby preventing the electromagnetic interference;

3. the utility model provides a circuit board anti-electromagnetic interference device adopts the reactor to carry out the filtering of circuit, reduces the appearance of electromagnetism, adopts the ground connection mouth to carry out ground connection to the circuit board, prevents that the circuit board from being influenced by electromagnetism, adopts deformable fixed plate to fix, carries out the shock attenuation to the circuit board.

Drawings

Fig. 1 is a schematic view of the overall structure of an anti-electromagnetic interference device for a circuit board according to the present invention;

FIG. 2 is a schematic view of a mounting opening of an anti-electromagnetic interference device for a circuit board according to the present invention;

FIG. 3 is a schematic view of the interior of the main body of the anti-EMI device for a circuit board of the present invention;

FIG. 4 is a schematic diagram of a main material of an anti-EMI device for a circuit board according to the present invention;

fig. 5 is a schematic top view of a fixing plate of the anti-electromagnetic interference device of the present invention.

The figures are labeled as follows: 1. a fixing plate; 2. a heat dissipation ring; 3. a magnetic ring; 4. a main body; 5. a reactor; 6. a power interface; 8. a fixing hole; 9. an installation port; 10. a demagnetizing layer; 11. a heat dissipation channel; 12. a magnetism absorbing layer; 13. a shielding layer; 14. a rebound layer; 15. a power outlet; 16. a ground port; 17. and (7) mounting.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1:

referring to fig. 1 and 5, an anti-electromagnetic interference device for a circuit board includes a fixing plate 1, the fixing plate 1 is made of elastic heat-insulating material, fixing holes 8 are formed in four corners of the top of the fixing plate 1, a reactor 5 is fixed on the left side of the fixing plate 1 through screws, a power interface 6 is arranged in the middle of the right side of the reactor 5, and the model of the reactor 5 is as follows: according to the HEL-37, a mounting position 17 is arranged at the position, corresponding to the bottom of the main body 4, of the fixing plate 1, a power outlet 15 is arranged in front of the right end of the mounting position 17, a grounding port 16 is arranged behind the power outlet 15, the mounting position 17 is not communicated with the fixing position, the power interface 6 is connected with a power supply through a cable, the power interface 6 is connected with the power outlet 15 through a cable, and the grounding port 16 is connected with a ground wire;

specifically, fixed plate 1 is installed to fixed orifices 8, and fixed plate 1 adopts elastic thermal insulation material to make, guarantees to carry out the shock attenuation after the installation is accomplished, adopts reactor 5 to carry out the filtering of circuit, prevents the electromagnetic interference that the circuit brought, installs the circuit board through installation department 17, makes things convenient for the installation of circuit board, carries out ground connection and connection through ground connection mouth 16 and power outlet 15, makes things convenient for the connection and the ground connection demagnetization of power, guarantees the normal use of circuit through the circuit connection between the part.

Example 2:

referring to fig. 1, 2, 3 and 4, an anti-electromagnetic interference device for a circuit board comprises a reactor 5, a main body 4 is arranged on the right side of the reactor 5, a mounting port 9 is formed in the bottom of the main body 4, the mounting port 9 is spherical, a collar is arranged on the outer side of the bottom of the mounting port 9, a demagnetizing layer 10 is arranged on the inner side of the main body 4, a heat dissipation channel 11 is arranged between the demagnetizing layer 10 and the main body 4, both sides of the top of the demagnetizing layer 10 are circular arcs, three layers of magnetic rings 3 are arranged on the outer side of the main body 4, the magnetic rings 3 are uniformly arranged up and down, a heat dissipation ring 2 is arranged at the bottom of the main body 4, the heat dissipation channel 11 is respectively communicated with the top of the mounting port 9 and the heat dissipation channel 11, the main body 4 is divided into a rebounding layer 14, a shielding layer 13 and a magnetism;

specifically, the three-layer material of main part 4 isolates electromagnetic interference, adopts rebound layer 14 to rebound electromagnetism, carries out once and blocks electromagnetism, shields the electromagnetism through shielding layer 13, carries out the secondary and blocks the electromagnetism, absorbs the electromagnetism through magnetism absorbing layer 12, absorbs the electromagnetism completely, prevents electromagnetic interference, adopts magnetic ring 3 to block the electromagnetism, prevents electromagnetic interference, dispels the heat through heat dissipation circle 2 and heat dissipation channel 11, prevents that the circuit board is overheated.

The working principle is as follows: the utility model relates to a circuit board anti-electromagnetic interference device, will install fixed plate 1 through fixed orifices 8, the heat-resisting and elastic material of fixed plate 1 makes fixed plate 1 conveniently install on various parts, and have thermal-insulated effect, after fixed plate 1 is installed and is accomplished, place the circuit board at installation 17, install power outlet 15 and connect ground connection mouth 16 through the cable with the power cord of circuit board, main part 4 is fixed at installation 17 at this moment, the rand blocks installation 17, main part 4 is installed and is accomplished at this moment, power interface 6 connects the power, reactor 5 carries out the anti-interference of filtering, voltage transmission through filtering is to power outlet 15 and transmit to the circuit board, the circuit board begins to work, in the course of circuit board work, fixed plate 1 carries out the shock attenuation anti-interference, when electromagnetism appears, rebound layer 14 carries out the rebound electromagnetism, the electromagnetism through the rebound transmits to shielding layer 13, the shielding layer 13 shields, carries out the demagnetization of secondary, the electromagnetism through the secondary demagnetization is inhaled magnetic layer 12 and is carried out complete absorption, electromagnetic blocking accomplishes this moment, and after the electromagnetism passes through main part 4 through the thermovent, the demagnetization layer 10 carries out the interference of secondary blocking electromagnetism, and generate heat when the circuit board during operation, heat dissipation channel 11 dispels the heat, and carry out the heat of discharging through the thermovent, the circuit board can carry out normal work this moment, and when needs stop, disconnection power interface 6 power can.

Having shown and described the basic principles and principal features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. The utility model provides a circuit board anti-electromagnetic interference device which characterized in that: including fixed plate (1), fixed plate (1) is made for elastic thermal insulation material, fixed orifices (8) have all been seted up at fixed plate (1) top four corners, fixed plate (1) left side is fixed with reactor (5) through the screw, be equipped with power source (6) in the middle of reactor (5) right side, reactor (5) right side is equipped with main part (4), installing port (9) have been seted up to main part (4) bottom, installing port (9) are the ball-type, the installing port (9) bottom outside is equipped with the rand, main part (4) inboard is equipped with magnetism eliminating layer (10), be equipped with heat dissipation channel (11) between magnetism eliminating layer (10) and main part (4), installation department (17) have been seted up to fixed plate (1) and main part (4) bottom department of corresponding.

2. The anti-electromagnetic interference device of the circuit board of claim 1, wherein: the magnetic ring heat dissipation device is characterized in that three layers of magnetic rings (3) are arranged on the outer side of the main body (4), the magnetic rings (3) are uniformly arranged up and down, a heat dissipation ring (2) is arranged at the bottom of the main body (4), the heat dissipation ring (2) is respectively communicated with the top of the mounting opening (9) and a heat dissipation channel (11), and the heat dissipation channel (11) is M-shaped.

3. The anti-electromagnetic interference device of the circuit board of claim 1, wherein: the main body (4) is divided into a rebound layer (14), a shielding layer (13) and a magnetic absorption layer (12), the rebound layer (14), the shielding layer (13) and the magnetic absorption layer (12) are uniformly arranged from the outside to the inside, and the demagnetizing layer (10) is made of the same material as the main body (4).

4. The anti-electromagnetic interference device of the circuit board of claim 1, wherein: the installation department (17) right-hand member the place ahead is equipped with power outlet (15), power outlet (15) rear is equipped with ground connection mouth (16), installation department (17) and fixed position do not communicate.

5. The anti-electromagnetic interference device of the circuit board of claim 1, wherein: both sides of the top of the demagnetizing layer (10) are circular arcs.

6. The anti-electromagnetic interference device of the circuit board of claim 1, wherein: the type of the reactor (5) is as follows: HEL-37.

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