WO2022126542A1

WO2022126542A1 - Electromagnetic wave signal shielding chamber

Info

Publication number: WO2022126542A1
Application number: PCT/CN2020/137340
Authority: WO
Inventors: 孙东芹
Original assignee: 伊斯特密封科技（江苏）有限公司
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2022-06-23
Also published as: ZA202207245B

Abstract

Disclosed in the present invention is an electromagnetic wave signal shielding chamber, comprising: a front housing and a rear housing. The front housing and the rear housing are fixedly mounted; a through hole is provided on the front housing; a front housing cavity is provided in the front housing; a rear housing cavity is provided in the rear housing; the front housing cavity is communicated with the rear housing cavity; four corners of each of the front housing cavity and the rear housing cavity are all provided with mounting holes; the front housing cavity and the rear housing cavity are connected to each other by means of bolts; a fixing plate and a shielding screen are provided in the rear housing cavity in the rear housing; the shielding screen is fixed to the fixing plate; the fixing plate and the shielding screen are respectively provided with a first through hole and a second through hole; the front housing is provided with a connection port used for mounting a signal line; the rear housing is provided with a line outlet hole for an inner data line; and the pore sizes of the first and second through holes match the pore size of an enameled wire used for data exchange inside and outside an isolation room. In the present invention, the fixing plate and the shielding screen are provided in the rear housing cavity to greatly improve the shielding effect, and the pore sizes of the first and second through holes match the pore size of the enameled wire to further improve the shielding effect.

Description

An electromagnetic wave signal shielding room

technical field

The invention belongs to the technical field of signal shielding, and particularly relates to an electromagnetic wave signal shielding room.

Background technique

With the rapid development of society and economy, both the production of enterprises and people's lives have gradually realized modernization and intelligence, and the realization of modernization and intelligence undoubtedly requires signal transmission. However, with the rapid development of the communication industry, the transmission of electrical signals , network signal propagation, Bluetooth signal propagation, etc. However, in order to prevent mutual interference during the transmission of various signals, this has led to the generation of signal shielding.

As the application of electromagnetics becomes more and more common, correspondingly, the problems caused by electromagnetic interference also increase. Electromagnetic interference refers to the degradation of equipment, transmission channel or system performance caused by electromagnetic disturbance, Electromagnetic phenomenon in which inanimate substances cause damage. Electromagnetic harassment can be electromagnetic noise, useless signals or changes in the transmission medium itself. Electromagnetic harassment may be the deviation of equipment or system workability from expected indicators or undesired deviations in work performance. , that is, the working performance is "degraded", and it may even cause the equipment or system to fail, or shorten the lifespan, or cause the system performance to undergo an unacceptable permanent decline, and in severe cases, it can also destroy the equipment or system; and electromagnetic radiation The resulting "electromagnetic pollution" will also affect human health, and the intensity of electromagnetic radiation exceeding the limit that the human body or the environment can bear will cause serious harm. Therefore, the demand for electromagnetic shielding rooms is also increasing. Electromagnetic shielding rooms are generally used to isolate external electromagnetic interference to ensure that in the measurement and testing of indoor electronic and electrical equipment, the electromagnetic shielding room is used to simulate an ideal electromagnetic environment and improve the reliability of inspection results. Accuracy, blocking indoor electromagnetic radiation from spreading to the outside world, strong electromagnetic radiation should be shielded and isolated to prevent interference with the normal operation of other electronic and electrical equipment or damage to the health of staff, prevent information leakage of electronic information equipment, and ensure information security.

However, most of the existing electromagnetic shields are equipped with a door on the sealed box, so that each opening and closing will seriously affect the shielding effect, and the gap between the door and the box cannot be shielded. Therefore, its shielding effect will be affected.

SUMMARY OF THE INVENTION

Purpose of the Invention: In order to overcome the above deficiencies, the purpose of the present invention is to provide an electromagnetic wave signal shielding room, which has a simple structure and reasonable design, and greatly improves its electromagnetic wave shielding effect.

Technical solution: In order to achieve the above purpose, the present invention provides an electromagnetic wave signal shielding room, comprising: a front shell and a rear shell, the front shell and the rear shell are fixedly installed, the front shell is provided with perforations, and the interior is provided with a perforation. There is a front shell cavity, the rear shell is provided with a rear shell cavity, the front shell cavity and the rear shell cavity are communicated, and the four corners inside the front shell cavity and the rear shell cavity are A mounting hole is provided, and the two are connected by bolts. A fixing plate and a shielding net are arranged in the cavity of the rear shell, and the shielding net is fixed on the fixing plate, and the fixing plate and the shielding net are respectively A first through hole and a second through hole are provided, the front shell is provided with a transfer interface for installing signal lines, the rear shell is provided with an outlet hole for the inner data line, and the shielding net and the fixing plate are connected to the rear shell. The shells are matched, and the apertures of the first through holes and the second through holes are matched with the apertures of the enameled wires used for data exchange inside and outside the isolation room.

In the electromagnetic wave signal shielding room described in the present invention, the fixing plate and the shielding net are arranged in the cavity of the rear shell, so that the fixing plate and the shielding net are matched with the shielding room, so as to realize all-round shielding and greatly improve the shielding room. At the same time, the setting of the first perforation and the second perforation on the fixed plate and the shielding net can match the aperture of the enameled wire, which can effectively prevent the shielding effect from being further improved, and avoid affecting the shielding effect due to the excessive aperture. .

In the present invention, four inner corners of the rear shell are provided with reinforcing ribs, the reinforcing ribs are convex, the mounting holes are provided on the reinforcing ribs, and the end of the rear shell away from the front shell is provided with a rear an end cover, the four corners of the rear end cover are provided with notches which are matched with the reinforcing ribs, and the rear end cover is provided with an inner cavity, the inner cavity communicates with the cavity of the rear shell, and the rear The end cover is matched with the rear shell, and both the fixing plate and the shielding net are matched with the rear cover.

The arrangement of the reinforcing ribs optimizes the structure of the front shell and the rear shell, and greatly improves the stability of the structure.

In the present invention, four corners of the fixing plate are provided with notches, and the notches are matched with the reinforcing ribs on the inner four corners of the rear shell. The fixing plate is matched with the reinforcing ribs on the inner four corners of the rear shell, so that the structure can be completely stabilized, the tightness of the connection between the two is improved, and the shielding effect thereof is further improved.

In the present invention, four corners of the shielding net are provided with gaps, the gaps are matched with the reinforcing ribs on the four inner corners of the rear shell, and the shielding net is matched with the reinforcing ribs on the four inner corners of the rear shell. It can achieve complete stability of the structure, improve the tightness of the connection between the two, and further improve its shielding effect.

In the present invention, the transfer interface is provided with a shielding ring, and the shielding ring is provided with a perforation inside, and the perforation is matched with the signal wire. The arrangement of the shielding ring can prevent the shielding effect of the switching interface from being affected by the excessively large opening, so that the entire shielding room can be shielded in all directions, and the shielding effect can be further improved.

In the present invention, the interior of the cavity of the front shell and the cavity of the rear shell are both arranged on the shielding layer, and the shielding layer adopts a metal shielding net. The arrangement of the shielding layer enables the cavity of the front shell and the cavity of the rear shell to be shielded at the same time, so that the entire shielding room can be shielded in all directions, and the shielding effect thereof can be further improved.

In the present invention, the front shell is provided with blind holes.

In the present invention, the wire outlet hole is arranged above the rear shell.

The shielding net in the present invention adopts a metal shielding net.

The shielding net in the present invention adopts a copper wire shielding net.

As can be seen from the above technical scheme, the present invention has the following beneficial effects:

1. In the electromagnetic wave signal shielding room described in the present invention, a fixed plate and a shielding net are arranged in the cavity of the rear shell, so that the fixed plate and the shielding net are matched with the shielding room, and the structure of the entire shielding room is improved. It is optimized so that it can achieve all-round shielding and greatly improve its shielding effect. At the same time, the setting of the first perforation and the second perforation on the fixed plate and the shielding net can be matched with the aperture of the enameled wire to effectively prevent further Improve its shielding effect and avoid affecting its shielding effect due to excessive aperture.

2. In the present invention, four inner corners of the front shell and the rear shell are provided with reinforcing ribs, the reinforcing ribs are convex, the installation holes are arranged on the reinforcing ribs, and the fixing plate and the shielding net Both are matched with the rear end cap. The arrangement of the reinforcing ribs optimizes the structure of the front shell and the rear shell, and greatly improves the stability of the structure.

3. In the present invention, four corners of the fixing plate are provided with notches, and the notches are matched with the reinforcing ribs on the inner four corners of the rear shell. The fixing plate is matched with the reinforcing ribs on the inner four corners of the rear shell, so that the structure can be completely stabilized, the tightness of the connection between the two is improved, and the shielding effect thereof is further improved.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the internal structure schematic diagram of the present invention;

FIG. 3 is a schematic structural diagram of the present invention after further improvement.

Detailed ways

The present invention will be further illustrated below in conjunction with the accompanying drawings and specific embodiments.

Example 1

An electromagnetic wave signal shielding room as shown in FIG. 1 and FIG. 2 includes: a front shell 1 and a rear shell 2, the front shell 1 and the rear shell 2 are fixedly installed, the front shell 1 is provided with a perforation 11, and There is a front shell cavity 12 inside, and a rear shell cavity 21 is arranged inside the rear shell 2. The front shell cavity 12 is communicated with the rear shell cavity 21, and the front shell cavity 12 and the rear shell are connected. The four corners inside the cavity 21 are provided with mounting holes 5, and the two are connected by bolts. The rear shell cavity 21 of the rear shell 2 is provided with a fixing plate 3 and a shielding net 4. The shielding net 4 is fixed on the fixing plate 3, the fixing plate 3 and the shielding net 4 are respectively provided with a first perforation 31 and a second perforation 32, and the front shell 1 is provided with a transfer port 13 for installing a signal line, so the The rear shell 2 is provided with an outlet hole 22 for the inner data line, the shielding mesh 4 and the fixing plate 3 are matched with the rear shell 2, and the apertures of the first and second perforations are the same as those used for the isolation room. The apertures of the enameled wires for internal and external data exchange are matched.

In this embodiment, four inner corners of the rear shell 2 are provided with reinforcing ribs 23, the reinforcing ribs 23 are convex, the mounting holes 5 are provided on the reinforcing ribs 23, and the rear shell 2 is far away from the One end of the front shell 1 is provided with a rear end cover 24 , four corners of the rear end cover 24 are provided with notches for matching with the reinforcing ribs 23 , and an inner cavity 25 is arranged in the rear end cover 24 . The inner cavity 25 communicates with the cavity 21 of the rear case, the rear end cover 23 is matched with the rear case 2 , and the fixing plate 3 and the shielding net 4 are matched with the rear end cover 24 .

In this embodiment, four corners of the fixing plate 3 are provided with notches, and the notches are matched with the reinforcing ribs 23 on the inner four corners of the rear shell 2 .

In this embodiment, four corners of the shielding net 4 are provided with notches, and the notches are matched with the reinforcing ribs 23 on the inner four corners of the rear shell 2 .

In this embodiment, the front case 1 is provided with a blind hole 6 .

In this embodiment, the wire outlet hole 22 is provided above the rear case 2 .

In this embodiment, the shielding net 4 is a metal shielding net.

In this embodiment, the shielding net 4 is a copper wire shielding net.

Example 2

An electromagnetic wave signal shielding room as shown in FIG. 2 and FIG. 3 includes: a front shell 1 and a rear shell 2, the front shell 1 and the rear shell 2 are fixedly installed, the front shell 1 is provided with a perforation 11, and There is a front shell cavity 12 inside, and a rear shell cavity 21 is arranged inside the rear shell 2. The front shell cavity 12 is communicated with the rear shell cavity 21, and the front shell cavity 12 and the rear shell are connected. The four corners inside the cavity 21 are provided with mounting holes 5, and the two are connected by bolts. The rear shell cavity 21 of the rear shell 2 is provided with a fixing plate 3 and a shielding net 4. The shielding net 4 is fixed on the fixing plate 3, the fixing plate 3 and the shielding net 4 are respectively provided with a first perforation 31 and a second perforation 32, and the front shell 1 is provided with a transfer port 13 for installing a signal line, so the The rear shell 2 is provided with an outlet hole 22 for the inner data line, the shielding mesh 4 and the fixing plate 3 are matched with the rear shell 2, and the apertures of the first and second perforations are the same as those used for the isolation room. The apertures of the enameled wires for internal and external data exchange are matched.

In this embodiment, four corners of the fixing plate 3 are provided with notches, and the notches are matched with the reinforcing ribs 23 on the inner four corners of the rear shell 2.

In this embodiment, a shielding ring 14 is provided on the transfer port 13 , and the shielding ring 14 is provided with a perforation inside, and the perforation is matched with the signal wire.

In this embodiment, the interior of the cavity 12 of the front case and the cavity 21 of the rear case are both provided on the shielding layer 15 , and the shielding layer 15 is made of a metal shielding mesh.

In this embodiment, the front case 1 is provided with a blind hole 6 .

In this embodiment, the wire outlet hole 22 is provided above the rear case 2 .

In this embodiment, the shielding net 4 is a metal shielding net.

In this embodiment, the shielding net 4 is a copper wire shielding net.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, some improvements can be made without departing from the principles of the present invention, and these improvements should also be regarded as the present invention. the scope of protection of the invention.

Claims

An electromagnetic wave signal shielding room is characterized in that: comprising: a front shell (1) and a rear shell (2), the front shell (1) and the rear shell (2) are fixedly installed, and the front shell (1) is provided with There is a perforation (11), and a front shell cavity (12) is arranged inside the rear shell (2), a rear shell cavity (21) is arranged inside the rear shell (2), and the front shell cavity (12) and the rear shell cavity are The cavities (21) communicate with each other, and four corners inside the front shell cavity (12) and the rear shell cavity (21) are provided with mounting holes (5), and the two are connected by bolts. A fixing plate (3) and a shielding net (4) are arranged in the cavity (21) of the rear shell in the casing (2), the shielding net (4) is fixed on the fixing plate (3), and the fixing plate ( 3) A first perforation (31) and a second perforation (32) are respectively provided on the shielding net (4), the front shell (1) is provided with a transfer port (13) for installing a signal line, and the rear The casing (2) is provided with an outlet hole (22) for the inner data wire, and the shielding net (4) and the fixing plate (3) are matched with the rear casing (2).
The electromagnetic wave signal shielding room according to claim 1, characterized in that: reinforcing ribs (23) are provided on the inner four corners of the rear shell (2), and the reinforcing ribs (23) are convex, so The mounting hole (5) is provided on the reinforcing rib (23), and the end of the rear shell (2) away from the front shell (1) is provided with a rear end cover (24). The corners are provided with notches for matching with the reinforcing ribs (23), and the rear end cover (24) is provided with an inner cavity (25), the inner cavity (25) and the rear shell cavity (21) In communication, the rear end cover (23) is matched with the rear shell (2), and both the fixing plate (3) and the shielding net (4) are matched with the rear end cover (24).
The electromagnetic wave signal shielding room according to claim 1, characterized in that: the four corners of the fixing plate (3) are provided with notches, and the notches are connected to the inner four corners of the rear shell (2). The reinforcing ribs (23) are matched with each other.
The electromagnetic wave signal shielding room according to claim 1, characterized in that: four corners of the shielding net (4) are provided with gaps, and the gaps are connected to the four inner corners of the rear shell (2). The reinforcing ribs (23) are matched with each other.
The electromagnetic wave signal shielding room according to claim 1, characterized in that: a shielding ring (14) is provided on the transfer port (13), and a perforation is provided inside the shielding ring (14), and the perforation is connected to the signal wire. match.
The electromagnetic wave signal shielding room according to claim 1, wherein a blind hole (6) is provided on the front shell (1).
The electromagnetic wave signal shielding room according to claim 1, characterized in that: the interior of the cavity (12) of the front shell and the cavity (21) of the rear shell are both arranged on a shielding layer (15), and the shielding layer (15) ) using metal shielding mesh.
The electromagnetic wave signal shielding room according to claim 1, characterized in that: the outlet hole (22) is arranged above the rear shell (2).
The electromagnetic wave signal shielding room according to claim 1, characterized in that: the shielding net (4) adopts a metal shielding net.
The electromagnetic wave signal shielding room according to claim 9, characterized in that: the shielding net (4) adopts a copper wire shielding net.