CN205562618U - Electromagnetic interference shield device - Google Patents
Electromagnetic interference shield device Download PDFInfo
- Publication number
- CN205562618U CN205562618U CN201620396965.1U CN201620396965U CN205562618U CN 205562618 U CN205562618 U CN 205562618U CN 201620396965 U CN201620396965 U CN 201620396965U CN 205562618 U CN205562618 U CN 205562618U
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- China
- Prior art keywords
- electromagnetic interference
- layer
- shielding device
- box body
- ferrite
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- 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.)
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Abstract
The utility model relates to an electromagnetic interference tests technical field, discloses an electromagnetic interference shield device to the accuracy of electromagnetic interference test is carried out in the improvement to the electronic product. Electromagnetic interference shield device puts the thing groove including what have box body that a plurality of leads to the line hole and be located the box body, wherein: the box body includes the iron shielded layer main part to and set up in the inboard wave -absorbing layer of iron shielded layer main part. Comparing prior art, adopting this electromagnetic interference shield device, supplementary electronic equipment's such as some lamp plates that can significantly reduce electromagnetic radiation is to the influence of testing result to the accuracy of carrying out the electromagnetic interference test to the electronic product has been improved.
Description
Technical field
This utility model relates to Electromagnetic Interference Test technical field, particularly relates to a kind of electromagnetic interference shield dress
Put.
Background technology
At present, electronic product is both needed to meet and by country's electricity to electronic product test in sales process
Magnetic disturbance standard limit, just can be with shipment.
In prior art, as a example by showing module, when display module is carried out Electromagnetic Interference Test, need
Point lamp plate is used to be lighted by display module as auxiliary electronic equipment, by test computer by lighting plate to display
Module output, for showing the signal of fc-specific test FC picture, then uses Electromagnetic Interference Test equipment to display mould
Group carries out Electromagnetic Interference Test.
Prior art has a drawback in that, the some lamp plate itself after energising exists electromagnetic radiation, to display
When module carries out Electromagnetic Interference Test, the electromagnetic radiation of some lamp plate and the electromagnetic radiation phase interaction of display module
With, influencing each other, thus cause the accuracy of test result poor, test result does not possess referential.
For needing to carry out other electronic product of Electromagnetic Interference Test, there is also above-mentioned similar technology and ask
Topic.
Utility model content
The purpose of this utility model embodiment is to provide a kind of electromagnetic interference shielding device, produces electronics to improve
Product carry out the accuracy of Electromagnetic Interference Test.
This utility model embodiment provides a kind of electromagnetic interference shielding device, including having several threading holes
Box body and be positioned at the article putting groove of box body, wherein: described box body includes metallic shield layer main body, Yi Jishe
It is placed in the suction ripple layer inside metallic shield layer main body.
When electronic product is carried out Electromagnetic Interference Test, first a lamp plate etc. is had the auxiliary of electromagnetic radiation
Each route material of electronic equipment is connected with electronic product and/or test computer, respectively by electronic product normal point
Bright or start；Then auxiliary electronic equipment is placed in the article putting groove of electromagnetic interference shielding device, auxiliary electron
Each route material of equipment is each passed through the threading hole of correspondence, closed box afterwards.Owing to metal screen layer is to box
Internal electromagnetic wave has shielding action, inhales ripple layer and electromagnetic wave in box body is had Absorption, compare existing skill
Art, uses this electromagnetic interference shielding device, can greatly reduce the electromagnetic radiation of auxiliary electronic equipment to detection
The impact of result, thus improve the accuracy that electronic product is carried out Electromagnetic Interference Test.
Preferably, described box body is spherical box body, and including upper half bulb and lower half bulb, described article putting groove is solid
Center due to box body.Box body is designed as spherical, shielding electromagnetic waves effect can be made and absorb effect
Fruit is more preferably.
It is also preferred that the left described upper half bulb and lower half bulb thread connection.Use this design, box body open and
Close more convenient, it is simple to pick and place auxiliary electronic equipment, and the mode of thread connection makes the sealing of box body
Property is preferable.
Preferably, described suction ripple layer includes the first frequency range rubber-ferrite layer and the second frequency range rubber-ferrite
Layer.
Preferably, described first frequency range rubber-ferrite layer is to be arranged at the ferrum inside metallic shield layer main body
Oxysome inhales ripple layer, and described second frequency range rubber-ferrite layer is to be arranged at ferrite to inhale the suction ripple cotton inside ripple layer
Layer.
Preferably, described suction ripple cotton layer includes that drift angle points to multiple pyramid unit of the centre of sphere.So can be right
The second frequency range electromagnetic wave that auxiliary electronic equipment sends plays more preferable assimilation effect.
It is also preferred that the left it is ferrite microwave absorbing coating that described ferrite inhales ripple layer, described suction ripple cotton layer is inhaled with ferrite
Ripple coated adhesive.
Preferably, it is pasted with magnetic-leakage preventing tinsel outside each threading hole.So be possible to prevent electromagnetic wave from
Spill at threading hole and the gap of wire rod, thus improve further and electronic product is carried out Electromagnetic Interference Test
Accuracy.
Preferably, described article putting groove outer surface has insulating barrier.So it is possible to prevent auxiliary electronic equipment short
Road, thus improve the functional reliability of auxiliary electronic equipment.
Preferably, several threading hole uniform intervals described are arranged.So can avoid material winds, and energy
Enough reduce interfering between wire rod, thus improve further and electronic product is carried out Electromagnetic Interference Test
Accuracy.
Accompanying drawing explanation
Fig. 1 is this utility model one embodiment electromagnetic interference shielding device axonometric chart；
Fig. 2 is the lower half bulb opening part view of this utility model one embodiment electromagnetic interference shielding device；
Fig. 3 is the lower half bulb axonometric chart of this utility model one embodiment electromagnetic interference shielding device；
Fig. 4 is the upper half bulb opening part view of this utility model one embodiment electromagnetic interference shielding device；
Fig. 5 is the upper half bulb axonometric chart of this utility model one embodiment electromagnetic interference shielding device；
Fig. 6 is pyramid cell schematics in this utility model one embodiment；
Fig. 7 carries out Electromagnetic Interference Test signal for using this utility model embodiment electromagnetic interference shielding device
Figure.
Reference:
100-box body
1-threading hole
2-article putting groove
3-metallic shield layer main body
4-inhales ripple layer
100a-upper half bulb
100b-lower half bulb
41-ferrite inhales ripple layer
42-inhales ripple cotton layer
421-pyramid unit
5-magnetic-leakage preventing tinsel
6-liquid crystal display module
7-tests computer
8-power line
9-signal input line
10-output line
11-backlight module supply lines
12-point lamp plate
13-power supply
The reception antenna of 200-Electromagnetic Interference Test equipment
Detailed description of the invention
In prior art, there is electromagnetic radiation in the some lamp plate itself after energising, and display module is being carried out electromagnetism
During disturbed test, the electromagnetic radiation of some lamp plate interacts with the electromagnetic radiation of display module, influences each other,
Thus causing the accuracy of test result poor, test result does not possess referential.
For improving the accuracy that electronic product carries out Electromagnetic Interference Test, this utility model embodiment provides
A kind of electromagnetic interference shielding device.For making the purpose of this utility model, technical scheme and advantage clearer,
By the following examples this utility model is described in further detail.
As shown in Figures 1 to 5, the electromagnetic interference shielding device that this utility model one embodiment provides, including
There is the box body 100 of several threading holes 1 and be positioned at the article putting groove 2 of box body 100, wherein: box body 100
Including metallic shield layer main body 3, and it is arranged at the suction ripple layer 4 inside metallic shield layer main body 3.
The particular type of electronic product to be tested does not limits, such as, can be liquid crystal display mode group, organic light emission two
Any products needing to carry out Electromagnetic Interference Test such as pole pipe display module.Do electronic product being carried out electromagnetism
When disturbing test, need to use auxiliary electronic equipment (such as putting lamp plate) lighted by electronic product or start.
The electromagnetic interference shielding device using this utility model embodiment is carrying out electromagnetic interference to electronic product
During test, first a lamp plate etc. is had electromagnetic radiation auxiliary electronic equipment each route material respectively with electronics
Product and/or test computer connect, and are normally lighted by electronic product or start；Then by auxiliary electronic equipment
Being placed in the article putting groove 2 of electromagnetic interference shielding device, each route material of auxiliary electronic equipment is each passed through correspondence
Threading hole 1, closed box 100 afterwards.
Use this electromagnetic interference shielding device, owing to metal screen layer 3 has screen to electromagnetic wave in box body 100
Cover effect, inhale ripple layer 4 and electromagnetic wave in box body 100 is had Absorption, compared to existing technology, Ke Yi great
The electromagnetic radiation of the big minimizing auxiliary electronic equipment impact on testing result, thus improve and electronic product is entered
The accuracy of row Electromagnetic Interference Test.
In this utility model embodiment, the concrete shape of box body 100 does not limits, such as, can be spherical box body,
Cube shaped box body, elliposoidal box body, etc..In the preferred embodiment shown in Fig. 1, box body 100 is
Spherical box body, including upper half bulb 100a and lower half bulb 100b, article putting groove 2 is fixed on box body 100
Center, had both been securable to lower half bulb 100b, it is possible to be fixed on upper half bulb 100a.By box body 100
It is designed as spherical, shielding electromagnetic waves effect and assimilation effect can be made more preferably.As it is shown in figure 1, it is real at this
Executing in example, threading hole 1 is opened in the edge of lower half bulb 100b.Additionally, threading hole can also be opened in
The edge of upper half bulb 100a, or, threading hole is by upper half bulb edge 100a and lower half bulb edge 100b
Two the half bore splits relatively offered are formed.
In above-described embodiment, upper half bulb 100a and lower half bulb 100b thread connection.Use this design,
Opening and closing of box body 100 is more convenient, it is simple to pick and place auxiliary electronic equipment, and the side of thread connection
Formula makes the sealing of box body 100 preferable, it is possible to reduce leakage field.It is noted that upper half bulb 100a
It is not limited to graphic form, it would however also be possible to employ clamping, elastic conjunction with the type of attachment of lower half bulb 100b,
Or by forms such as securing member connections.
In this utility model embodiment, inhaling ripple layer 4 can be single layer structure, it is also possible to for double-deck or multilamellar
Structure.As shown in Figure 2 and Figure 4, in this embodiment, inhale ripple layer 4 and include the first frequency range rubber-ferrite
Layer and the second frequency range rubber-ferrite layer.First frequency range rubber-ferrite layer and the second frequency range rubber-ferrite layer
The frequency range of institute's electromagnetic wave absorption is different, and such as, it is little that the first frequency range rubber-ferrite layer is mainly used in adsorption frequency
In the electromagnetic wave of 600MHz, the second frequency range rubber-ferrite layer is mainly used in adsorption frequency and exists
The electromagnetic wave of 200MHz～1000MHz.First frequency range rubber-ferrite layer and the second frequency range rubber-ferrite
Layer is applied in combination, so that the electromagnetic wave in box body is absorbed in the range of full frequency band to greatest extent, from
And the accuracy of test result can be improved further.
Concrete, the first frequency range rubber-ferrite layer can be to be arranged at the ferrum inside metallic shield layer main body 3
Oxysome inhales ripple layer 41, mainly includes the compositions such as ferrite powder, synthetic rubber, epoxy resin.Ferrite is inhaled
Ripple layer 41 can be ferrite microwave absorbing coating, is formed at inside metallic shield layer main body 3 by spraying coating process
Surface.Certainly, ferrite suction ripple layer 41 can also be formed at metal screen by bonding other process form such as grade
Cover the inner surface of layer main body 3.
Second frequency range rubber-ferrite layer can be to be arranged at ferrite to inhale the suction ripple cotton layer inside ripple layer 41
42, mainly include the compositions such as polyurethane sponge, carbon-coating, fire retardant, preservative, inhale in ripple cotton layer 42
Carbon-coating can also be inhaled wave-particle with other and replace.Inhale ripple cotton layer 42 and can be bonded in ferrite suction ripple layer 41
Inner side.As shown in Figure 2 and Figure 4, in preferred embodiment of the present utility model, inhale ripple cotton layer 42 and include
Drift angle points to multiple pyramid unit 421 of the centre of sphere.The second frequency that so auxiliary electronic equipment can be sent
Section electromagnetic wave plays more preferable assimilation effect.Pyramid unit 421 can be for cone shape or such as Fig. 6 institute
The pyramidal shape shown.
In preferred embodiment of the present utility model, article putting groove 2 outer surface has insulating barrier and (does not shows in figure
Go out).So can effectively prevent auxiliary electronic equipment short circuit from occurring, thus improve the work of auxiliary electronic equipment
Make reliability.Article putting groove 2 can design one layer or multilamellar as required, is used for placing auxiliary electronic equipment
Or radiation source.
Several threading holes 1 on box body 100 are perfectly even spaced setting.The particular number of threading hole 1 is not
Limit, is configured as required.In Fig. 1 embodiment, threading hole 1 is four, is arranged on lower half bulb 100b
Opening perimeter at and be uniformly distributed.Use this structure to design, material winds can be avoided, and can reduce
Electromagnetic interference between wire rod, thus improve further and electronic product is carried out the accurate of Electromagnetic Interference Test
Property.
Preferably, as it is shown in fig. 7, be pasted with magnetic-leakage preventing tinsel 5 outside each threading hole.When by line
After material passes threading hole and upper half bulb and lower half bulb are assembled into box body 100, use Copper Foil or aluminium foil etc.
It is pasted onto outside threading hole as magnetic-leakage preventing tinsel 5, the gap between closure threading hole and wire rod, can
To prevent electromagnetic wave from spilling at threading hole with the gap of wire rod, thus improve further and electronic product is carried out
The accuracy of Electromagnetic Interference Test.
Incorporated by reference to shown in Fig. 1 and Fig. 7, as a example by liquid crystal display module, liquid crystal display module is carried out electromagnetism
The step of disturbed test is as follows:
One, each route material of a lamp plate 12 is connected with liquid crystal display module 6 and test computer 7 respectively,
Liquid crystal display module 6 is lighted.Concrete, some lamp plate 12 draws four wire rods, signal input line 9, letter
Number output lead 10, power line 8 and backlight module supply lines 11.Signal input line 9 and test computer 7
Connecting, output line 10 is connected with the signal input interface of liquid crystal display module 6, power line 8 and confession
Electricity power supply 13 connects, and backlight module supply lines 11 is connected with the backlight module of liquid crystal display module 6.Test
Driven the letter of its display fc-specific test FC picture to liquid crystal display module 6 output by a lamp plate 12 with computer 7
Number.
Two, a lamp plate 12 is placed in the article putting groove 2 of electromagnetic interference shielding device, each road of some lamp plate 12
Wire rod is each passed through the threading hole 1 of correspondence.
Three, upper half bulb 100a is threadeded with lower half bulb 100b, form spherical box body.
Four, Copper Foil or aluminium foil etc. is used to be pasted onto outside threading hole 1 as magnetic-leakage preventing tinsel 5, closure
Gap between threading hole 1 and wire rod.
Five, using Electromagnetic Interference Test equipment that liquid crystal display module 6 is carried out Electromagnetic Interference Test, electromagnetism is done
Disturb the reception antenna 200 of test equipment apart from liquid crystal display module 6 setpoint distance, such as distance 3m.
Use this electromagnetic interference shielding device, the electromagnetic radiation of a lamp plate 12 can be greatly reduced to detection knot
The impact of fruit, the result degree of accuracy that liquid crystal display module 6 carries out Electromagnetic Interference Test is higher.
Obviously, those skilled in the art can carry out various change and modification to this utility model and not take off
From spirit and scope of the present utility model.So, if these amendments of the present utility model and modification belong to this
Utility model right requires and within the scope of equivalent technologies, then this utility model is also intended to comprise these and changes
Move and including modification.
Claims (10)
1. an electromagnetic interference shielding device, it is characterised in that including: there is the box of several threading holes
Body and the article putting groove being positioned at box body, wherein: described box body includes metallic shield layer main body, and is arranged at
Suction ripple layer inside metallic shield layer main body.
2. electromagnetic interference shielding device as claimed in claim 1, it is characterised in that described box body is ball
Shape box body, including upper half bulb and lower half bulb, described article putting groove is fixed on the center of box body.
3. electromagnetic interference shielding device as claimed in claim 2, it is characterised in that described upper half bulb
With lower half bulb thread connection.
4. electromagnetic interference shielding device as claimed in claim 2, it is characterised in that described suction ripple layer bag
Include the first frequency range rubber-ferrite layer and the second frequency range rubber-ferrite layer.
5. electromagnetic interference shielding device as claimed in claim 4, it is characterised in that described first frequency range
Rubber-ferrite layer is to be arranged at the ferrite inside metallic shield layer main body to inhale ripple layer, described second frequency range electricity
It is to be arranged at ferrite to inhale the suction ripple cotton layer inside ripple layer that magnetic wave inhales ripple layer.
6. electromagnetic interference shielding device as claimed in claim 5, it is characterised in that described suction ripple cotton layer
Multiple pyramid unit of the centre of sphere are pointed to including drift angle.
7. electromagnetic interference shielding device as claimed in claim 5, it is characterised in that described ferrite is inhaled
Ripple layer is ferrite microwave absorbing coating, and described suction ripple cotton layer is bonding with ferrite microwave absorbing coating.
8. electromagnetic interference shielding device as claimed in claim 1, it is characterised in that outside each threading hole
Side is pasted with magnetic-leakage preventing tinsel.
9. electromagnetic interference shielding device as claimed in claim 1, it is characterised in that outside described article putting groove
Surface has insulating barrier.
10. the electromagnetic interference shielding device as described in any one of claim 1～9, it is characterised in that described
Several threading hole uniform intervals are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620396965.1U CN205562618U (en) | 2016-05-04 | 2016-05-04 | Electromagnetic interference shield device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620396965.1U CN205562618U (en) | 2016-05-04 | 2016-05-04 | Electromagnetic interference shield device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205562618U true CN205562618U (en) | 2016-09-07 |
Family
ID=56804809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620396965.1U Expired - Fee Related CN205562618U (en) | 2016-05-04 | 2016-05-04 | Electromagnetic interference shield device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205562618U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109640610A (en) * | 2018-12-06 | 2019-04-16 | 上海无线电设备研究所 | A kind of increase and lose formula shielding case with higher electromagnet shield effect |
| CN114720965A (en) * | 2022-05-17 | 2022-07-08 | 中国船舶重工集团公司第七一一研究所 | Ultrasonic radar performance test box, detection device and detection method thereof |
-
2016
- 2016-05-04 CN CN201620396965.1U patent/CN205562618U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109640610A (en) * | 2018-12-06 | 2019-04-16 | 上海无线电设备研究所 | A kind of increase and lose formula shielding case with higher electromagnet shield effect |
| CN114720965A (en) * | 2022-05-17 | 2022-07-08 | 中国船舶重工集团公司第七一一研究所 | Ultrasonic radar performance test box, detection device and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 |