CN2722580Y - Electromagnetic shielding device - Google Patents
Electromagnetic shielding device Download PDFInfo
- Publication number
- CN2722580Y CN2722580Y CN 200420081145 CN200420081145U CN2722580Y CN 2722580 Y CN2722580 Y CN 2722580Y CN 200420081145 CN200420081145 CN 200420081145 CN 200420081145 U CN200420081145 U CN 200420081145U CN 2722580 Y CN2722580 Y CN 2722580Y
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- side plate
- groove
- electromagnetic
- electromagnetic screen
- lateral plate
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Abstract
The utility model provides an electromagnetic shielding device which comprises a first lateral plate and a second lateral plate, wherein, the first lateral plate is equipped with at least one groove. The second lateral plate is equipped with a bulge which can be correspondingly embedded in the bulge of the groove on the surface matching with the first lateral plate. Making use of the match of the bulge and the groove, the electromagnetic shielding device don't need to be provided with an elastic matching member. Then the electromagnetic shielding device looks that it has simple structure, easy production and better effect of shielding electromagnetic.
Description
Technical field
The utility model relates generally to a kind of electromagnetic screen.
Background technology
Along with improving constantly of electronic installation (as the computer) speed of service, the transmission speed of the digital signal of electronic installation associated components is more and more faster, and simultaneously, the electromagnetic wave radiant intensity of Shi Fanging is also increasing to external world.Because the lifting of speed, the increase of signal frequency reduces so the wavelength of signal is corresponding, so, also just require more and more littler to the slit of screening arrangement.Mainly be divided into the side cover-opening structure in the existing computer case structure or go up cover-opening structure, have a lot of places when cabinet is shut and have potential slit, cause electromagnetic leakage.Particularly at electronic building brick frequencies such as CPU greater than after the 1GHz, the conventional existing shielding problem of computer cabinet is more outstanding.
For addressing the above problem, industry adopts following four kinds of practices usually:
First, as shown in Figure 1, one of normal technical scheme that adopts is that the cabinet coupling part is provided with elasticity salient point 1 on side plate at present, increase contact between the cabinet side board to reach electromagnetic wave shielding, but the shortcoming of this scheme is the elastic characteristic that is subject to the material of side plate own easily, and plastic deformation takes place easily, so stability in contact is not high;
The second, the metalwork that will have preferable elasticity is inserted between the side plate to be grounded barrier, and still, this metalwork often has the phenomenon that comes off and can't play the effect of shielding, and cost is higher;
The 3rd, be to adopt conducting adhesive cloth, as shown in Figure 2, promptly use conducting adhesive cloth 2 to increase the contact of cabinet coupling part, this scheme weak point is a processed complex, and cost is increased considerably, and the computer cabinet cost can increase and appearance increase largely along with the length that adopts conducting adhesive cloth.
The 4th, as shown in Figure 3, electromagnetic armouring structure for existing a kind of computer cabinet, it comprises two interconnective cabinet side boards 10,20, on these two side plates, 10,20 fillets, wherein the fillet of side plate 10 is provided with U-lag 11 along edge extension bending, and the fillet of another side plate 20 extends the chimb 21 that is provided with bending along the edge, and the chimb 21 of this bending inserts in these U-lags 11.But its structure of this kind shielding mode is comparatively complicated, thus higher to processing request, and U-lag 11 is to be bent by the side plate edge to form, thereby be easy to generate malformation and then impact effect.
Summary of the invention
It is a kind of simple in structure that the utility model purpose is to provide, and is easy to make and have the electromagnetic screen of preferable shield effectiveness.
Implement electromagnetic screen of the present utility model and include interconnective first side plate and second side plate, offer at least one groove on this first side plate, the one side that matches with this first side plate on second side plate has can the corresponding protuberance that embeds above-mentioned groove.
Therefore, according to the electromagnetic screen of the utility model, the protuberance of the groove of first side plate and second side plate is cooperating situation closely fully, the leakage of can effectively avoiding generating electromagnetic waves; Do not cooperating closely under the situation, electromagnetic wave also can be advanced along " U " font route, increased the absorption reflection of electromagnetic wave in groove, thereby prevented its leakage, moreover this electromagnetic screen is simple in structure, is easy to make.
Description of drawings
Fig. 1 is the structural representation of existing a kind of electromagnetic shielding scheme;
Fig. 2 is the structural representation of existing another kind of electromagnetic shielding scheme;
Fig. 3 is the electromagnetic armouring structure schematic diagram of existing a kind of computer cabinet;
Fig. 4 is a cutaway view of implementing electromagnetic screen of the present utility model;
Fig. 5 is another cutaway view of implementing electromagnetic screen of the present utility model.
Embodiment
See also Fig. 4, be the utility model electromagnetic screen schematic diagram, its housing of this electronic installation includes interconnective first side plate 100, second side plate 200, wherein, this first side plate 100 is a fixture, second side plate 200 is a movable part, and offer at least one groove 110 on this first side plate 100, these groove 110 its sections are " U " shape structure, and its bottom is coated, and in second side plate 200 one side that matches with above-mentioned first side plate 100, having can the corresponding protuberance 210 that embeds above-mentioned groove 110, in present embodiment, this protuberance 210 is specially bump structure.
As shown in Figure 5, after first side plate 100, second side plate 200 of forming case of electronic device cooperatively interact, protuberance 210 on second side plate 200 embeds in the groove 110 of first side plate 100, is cooperating situation closely fully, the leakage of can effectively avoiding generating electromagnetic waves undoubtedly; Even do not cooperating closely under the situation, electromagnetic wave also can be advanced along " U " shown in dotted line font route, thus, has increased the absorption reflection of electromagnetic wave in groove, thereby has prevented its leakage.
Be worth this special instruction be, for electromagnetic HFS, the utility model can be by adjusting relative dimensions, as width, the thickness of groove 110, the spacing between each groove 110 etc. also can make frequency electromagnetic waves obtain good shielding properties.If, then can make case of electronic device obtain good capability of electromagnetic shielding in a large amount of employings in the coupling part of its housing of electronic installation structure of the present utility model.
According to the above, adopt the technical scheme of the utility model, this electromagnetic screen, it is simple in structure, be easy to processing, need not to require case of electronic device itself to have elasticity preferably, or independent elastic component is set, also need not to require quality of fit very high, can realize better, reliable effectiveness.
Claims (6)
1, a kind of electromagnetic screen, its housing of this electronic installation includes first side plate, second side plate, it is characterized in that: offer at least one groove on this first side plate, the one side that matches with this first side plate on second side plate has can the corresponding protuberance that embeds above-mentioned groove.
2, the electromagnetic screen according to claim 1 is characterized in that: its section of described groove is " U " shape structure.
3, the electromagnetic screen according to claim 1, it is characterized in that: described first side plate is a fixture, second side plate is a movable part.
4, the electromagnetic screen according to claim 1, it is characterized in that: described groove bottom is coated.
5, the electromagnetic screen according to claim 1, it is characterized in that: described protuberance is a bump structure.
6, the electromagnetic screen according to claim 1, it is characterized in that: described first side plate, second side plate interconnect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420081145 CN2722580Y (en) | 2004-07-27 | 2004-07-27 | Electromagnetic shielding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420081145 CN2722580Y (en) | 2004-07-27 | 2004-07-27 | Electromagnetic shielding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2722580Y true CN2722580Y (en) | 2005-08-31 |
Family
ID=35012948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420081145 Expired - Fee Related CN2722580Y (en) | 2004-07-27 | 2004-07-27 | Electromagnetic shielding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2722580Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102577656A (en) * | 2010-04-20 | 2012-07-11 | 安特精密科技有限公司 | Electromagnetic interference shielding arrangement |
| CN111665376A (en) * | 2019-03-07 | 2020-09-15 | 湖南省海狮电器有限公司 | Anti-interference shielding case for monitoring power transmission line |
| CN112993626A (en) * | 2021-03-25 | 2021-06-18 | 中国电力科学研究院有限公司 | Conductive connecting device and live-wire work shielding clothes |
-
2004
- 2004-07-27 CN CN 200420081145 patent/CN2722580Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102577656A (en) * | 2010-04-20 | 2012-07-11 | 安特精密科技有限公司 | Electromagnetic interference shielding arrangement |
| CN111665376A (en) * | 2019-03-07 | 2020-09-15 | 湖南省海狮电器有限公司 | Anti-interference shielding case for monitoring power transmission line |
| CN112993626A (en) * | 2021-03-25 | 2021-06-18 | 中国电力科学研究院有限公司 | Conductive connecting device and live-wire work shielding clothes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050831 Termination date: 20090727 |