CN2514391Y - Waveguide shield for computer casing - Google Patents
Waveguide shield for computer casing Download PDFInfo
- Publication number
- CN2514391Y CN2514391Y CN 01268373 CN01268373U CN2514391Y CN 2514391 Y CN2514391 Y CN 2514391Y CN 01268373 CN01268373 CN 01268373 CN 01268373 U CN01268373 U CN 01268373U CN 2514391 Y CN2514391 Y CN 2514391Y
- Authority
- CN
- China
- Prior art keywords
- waveguide
- shield assembly
- computer housing
- waveguide shield
- cabinet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
A waveguide shielding device of the computer box is fixedly arranged on the fixing hole of back board. The characteristic of the device is that the device comprises multi-layer metal plates closely congruent with each other. Each layer of the metal plates respectively is provided with several vents. The waveguide shielding device of the utility model solves the problems in heat dissipation and electromagnetic shielding computability at the same time, and reduces the product cost and installing cost of the waveguide shielding device.
Description
[technical field]
The utility model relates to a kind of electromagnetic screen of computer housing, refers to a kind of waveguide shield assembly of computer housing especially.
[background technology]
The electromagnetic leakage of computer cabinet, mainly be cabinet the hole, stitch and the lead that exposes cabinet causes.Wherein the hole of conventional case for desktop computer seam mainly causes leakage to the electromagnetic wave that is higher than the 500MHz frequency.
The dominant frequency of computing machine is more and more higher at present, and the problem of following is that the thermal value of system is also increasing, and the heat radiation of system requires cabinet that bigger more louvre is arranged.And simultaneously, because electromagnetic frequency is high more, then electromagnetic wavelength is short more, reach same effectiveness, requires the hole seam of cabinet littler, and heat radiation and electromagnetic compatibility just become a contradiction like this.
Existing waveguiding structure can be taken into account the requirement of ventilation and electromagnetic compatibility two aspects.But waveguiding structure and production technology are all comparatively special, need the manufacturer production of specialty, install and also have very special requirement.If can not well contact with cabinet around the hole of waveguide, though then the waveguide part can have good shield effectiveness, electromagnetic wave but may be gone out from the seam leakage between waveguide and the cabinet.
Adopt existing waveguiding structure can solve the contradictory problems of heat radiation and electromagnetic compatibility, but the installation requirement of waveguiding structure is very high, its cost is also very high simultaneously.For the common product for civilian use, it almost is unpractiaca directly adopting existing conventional waveguiding structure.
[utility model content]
The purpose of this utility model provides a kind of waveguide shield assembly of computer housing, can solve the problem of heat radiation aspect and electromagnetic screen compatibility simultaneously, can reduce the cost of products and the installation cost of waveguide shield assembly simultaneously.
In order to achieve the above object, the utility model provides a kind of waveguide shield assembly of computer housing, be fixedly installed on the mounting hole of postnotum of computer housing, it is characterized in that: it comprises the closely superimposed stacked conducting plate that is fixed together, on every layer of sheet metal all correspondence most air vents are set.
The waveguide shield assembly of described computer housing is characterized in that: this air vent can be square or regular hexagon.
The waveguide shield assembly of described computer housing, it is characterized in that: the mounting hole periphery that the waveguide shield assembly is installed on the postnotum of computer housing is provided with U-lag, be provided with bending edge at the stacked conducting plate periphery, this bending edge inserts in this U-lag, and waveguide shield assembly and cabinet are linked together.
The waveguide shield assembly of computer housing of the present utility model adopts the superimposed waveguide shield assembly that obtains of stacked conducting plate of the metal material of not expensive cabinet itself, can obtain simultaneously to dispel the heat and the effect of electromagnetic screen.Adopt the U-lag structure to be installed to above the cabinet, solve the installation question of waveguide shield assembly, can effectively reduce the leakage that may occur from the seam between waveguide shield assembly and the cabinet, the processing technology and the indicator of costs are all very satisfactory simultaneously.
After adopting the waveguide shield assembly of computer housing of the present utility model, after tested, the shielding properties of system has all obtained the test result felt quite pleased from 30Mhz to 10GHz.
[description of drawings]
Fig. 1 is the structural representation of single-layer metal plate of the present utility model.
Fig. 2 is the structural representation of stacked conducting plate of the present utility model.
Fig. 3 is that the utility model is installed in the synoptic diagram on the computer housing.
Fig. 4 is the synoptic diagram that the utility model is installed in another embodiment on the computer housing.
[embodiment]
With reference to Fig. 1,2,3, the waveguide shield assembly 10 of a kind of computer housing of the present utility model is arranged on the postnotum 20 of computer housing, and it comprises the closely superimposed stacked conducting plate that is fixed together 11, and equal correspondence is provided with most air vents 12 on every layer of sheet metal 11.Air vent 12 can be square, also can be regular hexagon.Because square or orthohexagonal air vent 12 can have bigger percentage of open area, thereby radiating effect is preferable.Percentage of open area herein is to equal the perforate total area ratio sheet metal total area.
Waveguide shield assembly 10 is to be installed on the mounting hole of postnotum 20 of computer housing, waveguide shield assembly 10 can be welded with the part that cabinet mounting hole periphery contacts usually, thereby guarantee good electric continuity.But this method is for the general product for civilian use, and obviously cost is too high, and production efficiency is too low simultaneously.As shown in Figure 4, the utility model can adopt the mounting hole periphery that waveguide shield assembly 10 is installed on the postnotum 20 of computer housing that U-lag 21 is set, be provided with bending edge 13 at stacked conducting plate 11 peripheries, bending edge 13 is inserted in the U-lag 21, and waveguide shield assembly 10 and cabinet are linked together, this structure can effectively reduce the leakage that may occur from the seam between waveguide and the cabinet, and the processing technology and the indicator of costs are all very satisfactory simultaneously.
Claims (4)
1, a kind of waveguide shield assembly of computer housing is fixedly installed on the mounting hole of postnotum of computer housing, it is characterized in that: it comprises the closely superimposed stacked conducting plate that is fixed together, on every layer of sheet metal all correspondence most air vents are set.
2, the waveguide shield assembly of computer housing according to claim 1 is characterized in that: this air vent is square.
3, the waveguide shield assembly of computer housing according to claim 1 is characterized in that: this air vent is a regular hexagon.
4, the waveguide shield assembly of computer housing according to claim 1, it is characterized in that: the mounting hole periphery that the waveguide shield assembly is installed on the postnotum of computer housing is provided with U-lag, be provided with bending edge at the stacked conducting plate periphery, this bending edge inserts in this U-lag, and waveguide shield assembly 10 and cabinet are linked together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01268373 CN2514391Y (en) | 2001-10-22 | 2001-10-22 | Waveguide shield for computer casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01268373 CN2514391Y (en) | 2001-10-22 | 2001-10-22 | Waveguide shield for computer casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2514391Y true CN2514391Y (en) | 2002-10-02 |
Family
ID=33674569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01268373 Expired - Fee Related CN2514391Y (en) | 2001-10-22 | 2001-10-22 | Waveguide shield for computer casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2514391Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262429A (en) * | 2010-05-25 | 2011-11-30 | 思科技术公司 | Cooling arrangement for a rack mounted processing device |
| CN103298284A (en) * | 2013-06-19 | 2013-09-11 | 中国人民解放军总参谋部工程兵科研三所 | Electromagnetic shielding machine case |
-
2001
- 2001-10-22 CN CN 01268373 patent/CN2514391Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262429A (en) * | 2010-05-25 | 2011-11-30 | 思科技术公司 | Cooling arrangement for a rack mounted processing device |
| CN103298284A (en) * | 2013-06-19 | 2013-09-11 | 中国人民解放军总参谋部工程兵科研三所 | Electromagnetic shielding machine case |
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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: 20021002 Termination date: 20101022 |