CN216852984U

CN216852984U - High-frequency electromagnetic field shielding device

Info

Publication number: CN216852984U
Application number: CN202220341198.XU
Authority: CN
Inventors: 蒋禄兵; 何亮
Original assignee: Deyang Corey Equipment Factory; Sichuan Puri Sheng Technology Co ltd
Current assignee: Deyang Corey Equipment Factory; Sichuan Puri Sheng Technology Co ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-06-28
Anticipated expiration: 2032-02-21

Abstract

The utility model discloses a high-frequency electromagnetic field shielding device, which relates to the technical field of high-frequency electromagnetic field shielding and comprises a metal box body, wherein one side of the metal box body is provided with a grounding wire, conductive silver paste is sprayed inside the metal box body, and the welding seam of the metal box body is provided with a conductive liner; the metal box body is also internally provided with a connecting part which connects the metal box body into a whole. The utility model discloses a set up metallic aluminum's casing, aluminium has good electric conductive property and shielding property, and the inner wall spraying has electrically conductive silver thick liquid, further plays electrically conductive and shielded effect, and when high-frequency oscillation subassembly produced the high-frequency electromagnetic field, the high frequency that the diffusion came out passes through the leading-in underground of earthing terminal to solve electromagnetic interference's problem.

Description

High-frequency electromagnetic field shielding device

Technical Field

The utility model relates to a high frequency electromagnetic field shielding technical field specifically is a high frequency electromagnetic field shielding device.

Background

In the high-frequency combustion detector, when a high-frequency circuit works, electromagnetic waves are radiated outwards to interfere with an infrared detector of the instrument. On the other hand, various electromagnetic waves in the space are also induced into the circuit, which causes interference to the circuit and influences the normal operation of the circuit, thereby causing that correct data cannot be detected. If the designer does not consider how to handle when the design, the shielding effectiveness of the shielding body is often very low, does not have shielding effectiveness even, and effectual shielding body means that whole shielding body must be a complete, continuous electric conductor, complete structure and good conductor, the effect of direct decision shielding, the utility model provides a high-frequency electromagnetic field shielding device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high frequency electromagnetic field shield assembly to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: a high-frequency electromagnetic field shielding device comprises a metal box body, wherein a grounding wire is installed on one side of the metal box body, conductive silver paste is sprayed inside the metal box body, and conductive gaskets are installed at welding seams of the metal box body;

the metal box body is also internally provided with a connecting part which connects the metal box body into a whole.

Preferably, connecting portion are the cuboid structure that a plurality of metal strips or wire are constituteed, and lay the inside wall at the metal box, the inboard spraying of metal wire or metal strip and metal box has electrically conductive silver thick liquid.

Preferably, the connecting portion are arc-shaped plates made of metal, the inner side of the side wall joint of the metal box body is provided with a clamping groove, and the arc-shaped plates are clamped in the clamping groove and are in contact with the side wall of the clamping groove.

Preferably, the metal box body comprises a plurality of metal sheets, wherein a plurality of metal strips are fixedly mounted on the end faces of the two symmetrically arranged metal sheets, the metal strips are positioned at the splicing positions of the metal sheets, and the metal strips are clamped between the metal strips.

Preferably, a conductive gasket is further placed between two adjacent metal strips.

Preferably, the conductive gasket is made of metal, the side face of the conductive gasket, which is in contact with the metal plate, is of a plate-shaped structure, and the other two side faces are of a V-shaped structure which is recessed inwards.

Preferably, the metal box is made of aluminum.

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

the utility model discloses a set up metallic aluminum's casing, aluminium has good electric conductive property and shielding property, the inner wall spraying has electrically conductive silver thick liquid, further play electrically conductive and shielded effect, when high-frequency oscillation subassembly produced high-frequency electromagnetic field, the high frequency that the diffusion came out passes through the leading-in underground of earthing terminal, thereby solve electromagnetic interference's problem, and through setting up wire or metal strip or arc, the condition that the inside right angle that can avoid aluminium system box spraying can not arrive when electrically conductive silver thick liquid of spraying, improve the electrical continuity of electrically conductive silver thick liquid.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a sectional view of the present invention;

FIG. 3 is a cross-sectional view of another configuration of the present invention;

FIG. 4 is a schematic structural view of another structure of the present invention;

fig. 5 is a schematic structural view of the conductive gasket of the present invention;

fig. 6 is a schematic structural diagram of the metal strip or the metal wire according to the present invention.

In the figure: 1. a metal box body; 2. conductive silver paste; 3. a ground line; 4. an arc-shaped plate; 5. a metal strip; 6. A conductive pad; 11. a metal plate; 12. a clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-2, this embodiment discloses a high-frequency electromagnetic field shielding device, including metal box 1, high-frequency oscillation assembly has been placed to metal box 1's inside, it is preferred, metal box 1 is metal aluminium material, aluminium has the electric conductive property and the shielding property of practicing well, earth connection 3 is installed to one side of metal box 1, when high-frequency oscillation assembly produced the high-frequency and led the electromagnetic field, the high frequency that diffuses out passes through earth connection 3 to the underground, metal box 1's inside spraying has electrically conductive silver thick liquid 2, electrically conductive silver liquid 2 can reduce the electrical discontinuity of structure to minimumly, further play electrically conductive and insulating effect, electrically conductive liner is all installed to metal box 1's welding seam department, electrically conductive liner can improve the stability of connecting between the box, make to connect more inseparabler between the box, be favorable to the transmission in magnetic field more. Thereby solving the problem of electromagnetic interference.

The metal box 1 is also provided with a connecting part for connecting the metal box 1 into a whole.

Because there are a plurality of right angles in the inside of metal box 1, consequently when spraying conductive silver thick liquid 2, because the existence of right angle department, can lead to the not direct depths of the depths spraying of right angle department to lead to conductive silver thick liquid 2 not a complete whole when the spraying, can not form a conductive path of accomplishing, thereby make conductive silver thick liquid 2's effect descend, the condition of inefficacy appears even.

Therefore in this embodiment, as shown in fig. 6, connecting portion are a plurality of metal strips or wire cross arrangement, and constitute the cuboid structure, and lay the inside wall at metal box 1, the inboard spraying of metal wire or metal strip and metal box 1 has electrically conductive silver thick liquid, metal wire or metal strip can form a confined space, also have certain shielded effect to the electromagnetism, and set up metal wire or metal strip in the inboard of metal box 1, can bulge in the inside wall of metal box 1, when the electrically conductive silver thick liquid of spraying, electrically conductive silver thick liquid at first with metal wire or metal strip contact, improve the continuity of electrically conductive silver thick liquid 2.

As shown in fig. 3-4, connecting portion also can set up to the arc 4 of metal material, joint groove 12 has been seted up to the lateral wall junction inboard of

metal box

1, and 4 cards of arc are in joint groove 12, and with the lateral wall contact of joint groove 12, arc 4 is used for installing the right angle corner at metal box 1, cover the right angle department, when the electrically conductive silver thick liquid of spraying, the electrically conductive silver thick liquid spraying is on arc 4, arc 4 forms a closed structure with metal box 1, and the electrically conductive silver thick liquid of right angle corner spraying has been avoided, can make the shower nozzle effect of electrically conductive silver thick liquid better, increase the electrical continuity of electrically conductive silver thick liquid.

And arc 4 is the metal material, for example for the aluminium material, has certain elasticity, consequently when 4 cards of arc are inside joint groove 12, arc 4 receives the extrusion force, and the counter-force or the elasticity that arc 4 produced can make the lateral wall of arc 4 and the lateral wall of joint groove 12 tightly contact together, improve the contact compactness between arc and the box, avoid the junction gap to appear.

In a further embodiment, the metal box 1 is composed of a plurality of metal plates 11, wherein a plurality of metal strips 5 are fixedly installed on end surfaces of two symmetrically arranged metal plates 11, when the metal plates 11 are spliced together, the metal strips 5 are located at the splicing positions of the metal plates 11, and the metal plates 11 are clamped between the metal strips 5, so that the metal plates 11 are spliced, and the metal plates 11 are conveniently welded.

In this embodiment, conductive gasket 6 has also been placed between two adjacent metal strips 5, as shown in fig. 5, conductive gasket 6 is the metal material, the side that conductive gasket 6 and metal sheet 11 contact is the platelike structure, other two sides are inside sunken "V" shape structure, when connecting two metal sheets 11, place conductive gasket between two metal sheets 11, conductive gasket's side can move inside, thereby make conductive gasket compression, alright can weld two metal sheets 11, conductive gasket can provide outside elasticity owing to the compression, make it inseparabler to connect between the metal sheet 11.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high-frequency electromagnetic field shielding device comprises a metal box body (1), and is characterized in that: a grounding wire (3) is installed on one side of the metal box body (1), conductive silver paste (2) is sprayed inside the metal box body (1), and conductive gaskets are installed at welding seams of the metal box body (1);

the metal box body (1) is also internally provided with a connecting part which connects the metal box body (1) into a whole.

2. A high-frequency electromagnetic field shielding apparatus as set forth in claim 1, wherein: connecting portion are the cuboid structure that a plurality of metal strips or wire are constituteed, and lay the inside wall at metal box (1), the inboard spraying of metal wire or metal strip and metal box (1) has electrically conductive silver thick liquid.

3. A high-frequency electromagnetic field shielding apparatus as set forth in claim 1, wherein: the connecting portion are arc plates (4) made of metal materials, clamping grooves (12) are formed in the inner sides of the side wall connecting portions of the metal box body (1), and the arc plates (4) are clamped in the clamping grooves (12) and are in contact with the side walls of the clamping grooves (12).

4. A high-frequency electromagnetic field shielding apparatus according to claim 3, characterized in that: the metal box body (1) is composed of a plurality of metal plates (11), wherein a plurality of metal strips (5) are fixedly mounted on the end faces of the two symmetrically arranged metal plates (11), the metal strips (5) are located at the splicing positions of the metal plates (11), and the metal plates (11) are clamped between the metal strips (5).

5. A high-frequency electromagnetic field shielding apparatus as defined in claim 4, wherein: and a conductive gasket (6) is also arranged between two adjacent metal strips (5).

6. A high-frequency electromagnetic field shielding device as defined in claim 5, wherein: the conductive gasket (6) is made of metal, the side face of the conductive gasket, which is in contact with the metal plate (11), is of a plate-shaped structure, and the other two side faces are of a V-shaped structure which is sunken inwards.

7. A high-frequency electromagnetic field shielding apparatus as set forth in claim 1, wherein: the metal box body (1) is made of aluminum.