CN110470873B

CN110470873B - Communication circuit test shielding box

Info

Publication number: CN110470873B
Application number: CN201910844716.2A
Authority: CN
Inventors: 袁一铭
Original assignee: Guizhou Zhongxin Hongye Technology Co ltd
Current assignee: Guizhou Zhongxin Hongye Technology Co ltd
Priority date: 2019-09-07
Filing date: 2019-09-07
Publication date: 2021-08-31
Anticipated expiration: 2039-09-07
Also published as: CN110470873A

Abstract

The invention discloses a communication circuit test shielding box, comprising a box body made of metal, a fixing clip is arranged in the box body for clamping a circuit board, and a sealed box door is arranged on one side of the box body. At least one window is arranged on either side of the box or on the box door, and the window is inlaid with shielding glass; the shielding glass includes a storage section and a filling section, and a cavity is arranged in the storage section to store mercury, and a filling section is arranged in the filling section. The hollow interlayer is communicated with the cavity, and the total volume of the hollow interlayer is smaller than the total volume of the cavity. The special window structure of the invention enables the operator to easily see the internal situation before the circuit board test, which is convenient for wiring and installation of the circuit board to be tested. shield.

Description

Communication circuit test shielding box

Technical Field

The invention relates to the technical field of communication test, in particular to a communication circuit test shielding box.

Background

The electromagnetic wave is one of the most commonly used carriers in the communication technology, but the electromagnetic wave is ubiquitous, so that the test can be completed only when external electromagnetic interference is eliminated during the test of part of communication circuit boards, and normal experimental data can be obtained. Due to the diversity of the circuit boards, complicated wiring lines and test lines are stored in the shielding box, and the shielding box is made of metal, so that the internal situation cannot be seen, and thus, wiring is very difficult (if a glass window is adopted, glass cannot block electromagnetic waves).

Disclosure of Invention

The invention aims to solve the technical problem of providing a communication circuit testing shielding box which realizes visualization on the basis of not influencing the shielding effect.

The technical scheme of the invention is as follows:

a communication circuit test shielding box comprises a box body made of metal, wherein a fixing clamp is arranged in the box body and used for clamping a circuit board, a sealed box door is arranged on one side of the box body, at least one window is arranged on any side surface of the box body or the box door, and shielding glass is embedded in the window; the shielding glass comprises a storage section and a filling section, a cavity is arranged in the storage section to store mercury, a hollow interlayer is arranged in the filling section to be communicated with the cavity, and the total volume of the hollow interlayer is smaller than that of the cavity.

Furthermore, the side face of the box body and the box door are both provided with windows.

Furthermore, the shielding glass is toughened glass.

Further, the fixing clips are arranged on two sides of the box body, and one pair or a plurality of pairs are arranged.

Furthermore, the thickness of the hollow interlayer of the filling section is not less than 0.5 mm.

Furthermore, the thickness of the hollow interlayer of the filling section is between 0.6 and 0.8 mm.

Furthermore, the cavity of the storage section adopts a square cavity.

Furthermore, the box door is hinged or inserted and connected with the box body

The invention has the advantages that:

the special window structure of the invention ensures that an operator can conveniently see the internal situation before the circuit board is tested, is convenient for wiring and installing the tested circuit board and the like, and the box body can be completely sealed by mercury to complete electromagnetic shielding after the test is started and the box body is overturned.

Drawings

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

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a diagram illustrating a window open state;

fig. 4 is a schematic view of a window in a closed state.

In the figure: the method comprises the following steps of 1-box body, 2-box door, 3-window, 4-shielding glass, 41-filling section, 42-storage section, 43-mercury, 5-fixing clamp and 6-circuit board.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1-4:

a communication circuit test shielding box comprises a box body 1 made of metal, wherein a fixing clamp 5 is arranged in the box body 1 and used for clamping a circuit board 6, a sealed box door 2 is arranged on one side of the box body 1, at least one window 3 is arranged on any side surface of the box body 1 or the box door 2, and shielding glass 4 is embedded in the window 3; the shielding glass 4 comprises a storage section 42 and a filling section 41, a cavity is arranged in the storage section 42 for storing mercury, a hollow interlayer is arranged in the filling section 41 and communicated with the cavity, and the total volume of the hollow interlayer is smaller than that of the cavity. For all-round observation, the side of the box body 1 and the box door 2 are both provided with windows 3 under the condition of not influencing the arrangement of internal circuits. Since mercury is a toxic volatile substance, the shielding glass 4 is made of tempered glass for safety. And considering the situation that a plurality of circuits can be tested synchronously, the fixing clamps 5 are arranged on two sides of the box body 1, and one pair or a plurality of pairs are arranged. In order to ensure the shielding effect, the hollow sandwich thickness of the filling section 41 is not less than 0.5mm, preferably between 0.6 and 0.8 mm. Meanwhile, in order to reduce the thickness of the storage section 42, the cavity of the storage section 42 is a square cavity. The box door 2 of the invention is hinged or inserted to be connected with the box body 1, and other existing sealing modes can be adopted. The internal test circuit is arranged or determined according to the circuit board circuit to be tested, and is different from the circuit board, and is not described again.

Mercury and lead are substances with the strongest electromagnetic and radiation shielding capability, but mercury is liquid at normal temperature, the mercury-free electromagnetic shielding box is poured into the storage section 42 of the shielding glass 4 (vacuum pouring), when the box body is inverted (the storage section 42 is positioned below), mercury is positioned in the storage section 42, the filling section 41 of the shielding glass 4 is transparent, an experimenter can observe the internal condition from a window, the installation and wiring of a circuit board are convenient to test, the circuit board is fixed by using a fixing clamp after the installation is finished, then the box door is closed, then the box body is inverted, and as the total volume of the hollow interlayer is smaller than that of the cavity, mercury in the cavity can fill the hollow clamp, so that the box body 1 forms a closed electromagnetic shielding environment. The present invention is proposed for laboratory testing, which is inconvenient for mobile testing due to its special structure.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

Claims

1. The utility model provides a communication circuit test shielded cell, includes box (1) made by the metal, be equipped with fixation clamp (5) in box (1) and be used for centre gripping circuit board (6), box (1) one side is equipped with sealed chamber door (2), its characterized in that: at least one window (3) is arranged on either side surface of the box body (1) or the box door (2), and shielding glass (4) is embedded in the window (3); shielding glass (4) are including storing section (42) and filling section (41), establish the cavity in storing section (42) and store mercury, establish hollow intermediate layer in filling section (41) with the cavity intercommunication, just hollow intermediate layer total volume is less than the cavity total volume.

2. The communication circuit testing shielded box of claim 1, wherein: the side face of the box body (1) and the box door (2) are both provided with windows (3).

3. The communication circuit testing shielded box of claim 1, wherein: the shielding glass (4) is made of toughened glass.

4. The communication circuit testing shielded box of claim 1, wherein: the fixing clamps (5) are arranged on two sides of the box body (1) and are arranged in one pair or multiple pairs.

5. The communication circuit testing shielded box of claim 1, wherein: the thickness of the hollow interlayer of the filling section (41) is not less than 0.5 mm.

6. The communication circuit testing shielded box of claim 5, wherein: the thickness of the hollow interlayer of the filling section (41) is between 0.6 and 0.8 mm.

7. The communication circuit testing shielded box of claim 1, wherein: the cavity of the storage section (42) is a square cavity.

8. The communication circuit testing shielded box of any one of claims 1-7, wherein: the box door (2) is hinged or inserted and connected with the box body (1).