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Shielding unit, shielding box body and shielding box

A shielding box and box technology, applied in the fields of magnetic field/electric field shielding, electrical components, etc., can solve the problems that the box body of the shielding box cannot be adapted to heat dissipation, poor, etc., to ensure long-term shielding effect, improve comprehensive performance, and satisfy many The desired effect of the functional test environment

Inactive Publication Date: 2018-05-18
广电计量检测(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] What the present invention aims to solve is the problem that the box body of the existing shielding box cannot be adapted to the equipment under test of different sizes and has poor heat dissipation

Method used

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  • Shielding unit, shielding box body and shielding box
  • Shielding unit, shielding box body and shielding box
  • Shielding unit, shielding box body and shielding box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like figure 1 As shown, a shielding box 100 according to a preferred embodiment of the present invention, the shielding box 100 body of the shielding box 100 is assembled by a shielding unit 2 and a plurality of shielding plates 1, wherein the shielding unit 2 constitutes the shielding box 100. The shielding plate 1 constitutes the bottom and side surfaces of the shielding box 100 body.

[0039] In order to adapt the shielding box 100 to the test space requirements of different sizes, the above-mentioned shielding unit 2 and the shielding plate 1 and the shielding plate 1 and the shielding plate 1 are connected in a detachable manner. Specifically, the shielding unit 2 includes a base plate 21, wherein the outer periphery of the base plate 21 is provided with a connecting portion 211 for splicing, such as figure 2 As shown, the substrate 21 can be conveniently connected to the shielding plate 1 through the connecting portion 211 , so as to realize the assembly of the ...

Embodiment 2

[0049] The difference between this embodiment and Embodiment 1 is that the shielding box 100 body of the shielding box 100 in this embodiment is assembled from the above-mentioned shielding unit 2 . The connection between the shielding units 2 may be detachable connection through the connecting piece 10 such as the above-mentioned electromagnetic compatibility board.

Embodiment 3

[0051] This embodiment is a specific application example of Embodiment 1. The shielding box 100 in this embodiment is used in the testing of new energy automobile parts. It is assembled by shielding plate 1 and shielding unit 2. Of course, different sizes of the shielding box 100 can be realized by changing the size or quantity of the shielding plate 1 and the shielding unit 2 .

[0052] Both the shielding plate 1 and the base plate 21 in this embodiment are made of stainless steel with good electromagnetic shielding properties, and of course they can also be made of double-layer hot-dip galvanized steel. The thickness can be 2 mm, and a flat foam absorbing material of type SML is attached to it, so that the overall shielding effectiveness of the shielding box 100 in the DC-18GHz frequency range can reach 90dB.

[0053] In addition, the connecting piece 10 connecting the shielding plate 1 and the base plate 21 and between the shielding plate 1 and the shielding plate 1 is rea...

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PUM

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Abstract

The invention relates to the technical field of test auxiliary equipment, and discloses a shielding unit. The shielding unit includes a substrate and a waveguide window, an installation port is arranged on the substrate, the waveguide window covers the installation port and is provided with a wave absorbing material having ventilating holes, and the outer circumferential edge of the substrate is provided with a connecting part used for splicing. The invention also discloses a shielding box body spliced by the abovementioned shielding units or spliced by the abovementioned shielding units and shielding plates and a shielding box having the shielding box body. The shielding box can adapt to different sizes of test equipment and has good heat radiation performance.

Description

technical field [0001] The invention relates to the technical field of testing auxiliary equipment, in particular to a shielding unit, a shielding box assembled from the shielding unit or assembled from the shielding unit and a shielding plate, and a shielding box having the shielding box. Background technique [0002] The shielding box is a device that can limit the electromagnetic capability within a certain space to suppress radiation interference, and process conduction and radiation to provide a non-interference test environment for the wireless communication equipment under test located in the shielding box. It is widely used in the testing of wireless communication products, especially in the electromagnetic compatibility testing of automotive electronic products, where the comprehensive performance requirements of the shielding box are more stringent. In order to improve the shielding effect, most of the current shielding boxes are made of an integrated metal box. Ho...

Claims

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Application Information

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IPC IPC(8): H05K9/00
CPCH05K9/006
Inventor 张猛
Owner 广电计量检测(北京)有限公司