CN108366518A - A kind of metallic shield case - Google Patents
A kind of metallic shield case Download PDFInfo
- Publication number
- CN108366518A CN108366518A CN201810090045.0A CN201810090045A CN108366518A CN 108366518 A CN108366518 A CN 108366518A CN 201810090045 A CN201810090045 A CN 201810090045A CN 108366518 A CN108366518 A CN 108366518A
- Authority
- CN
- China
- Prior art keywords
- shield case
- metallic shield
- metal sheet
- corner reflector
- ferrite
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0049—Casings being metallic containers
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The present invention is suitable for electronic product production test technical field, provide a kind of metallic shield case, it include the shielded box ontology equipped with accommodating chamber, the side wall of the accommodating chamber is equipped at least one corner reflector, and the endpoint of the corner reflector is equipped with the triangle metal sheet that the cavity for destroying the corner reflector reflects.The triangle metal sheet that the present invention is reflected by the cavity being equipped on the endpoint of corner reflector for destroying corner reflector, metallic shield case is effectively isolated wireless radiation source, effective covering can be reached to the common communication band with radio frequency electric equipment.
Description
Technical field
The invention belongs to electronic product production test technical field, more particularly to a kind of metallic shield case.
Background technology
In the prior art, many electronic products or toy all have the function of wireless connection etc..It is a large amount of due to existing in air
Radio signal interference radio transmitted power and receive power and all declining and with skill upgrading, so in testing,
Need interference of the shielded box shielding less radio-frequency to product.
With the exponential growth in wireless radiation source in the reduction for receiving power of electronic product and external environment, tradition gold
Belong to shielded box to be difficult to be effectively isolated wireless radiation source, or is difficult to effectively shield radiation in shielded box.
Invention content
The purpose of the present invention is to provide a kind of metallic shield casees, it is intended to solve conventional metals shielded box and be difficult to wireless spoke
The technical issues of source of penetrating is effectively isolated.
The invention is realized in this way a kind of metallic shield case, includes the shielded box ontology equipped with accommodating chamber, the receiving
The side wall of chamber is equipped at least one corner reflector, and the endpoint of the corner reflector is equipped with for destroying the corner reflector
The triangle metal sheet of cavity reflection.
Further, the cross section of the triangle metal sheet is in equilateral triangle.
Further, the shielded box ontology includes that one end is wherein connect with the triangle metal sheet on one side respectively
Three pieces of quadrangle metallic plates.
Further, the cross section of the quadrangle metallic plate is square or rectangle.
Further, the length of side of the triangle metal sheet is more than or equal to 12cm, and the thickness of the triangle metal sheet is big
In equal to 3cm.
Further, powder pressing ferrite plank is laid on the side wall of the accommodating chamber, the ferrite plank
Powder size is 10 μm to 3nm.
Further, using 45 ° or 135 ° of edge intersections between the adjacent ferrite plank.
Further, the thickness of the ferrite plank is 5mm to 15mm.
Further, the oblique trepanning that normal inclination angle is more than or equal to 60 ° is offered on the ferrite plank.
Further, the suction wave layer that thickness is 5mm to 9mm is laid on the ferrite plank.
A kind of metallic shield case for implementing the present invention, has the advantages that：Compared with prior art, the present invention passes through
The triangle metal sheet that the cavity for destroying corner reflector reflects is equipped on the endpoint of corner reflector so that metallic shield case
Wireless radiation source can be effectively isolated, the common communication band with radio frequency electric equipment can be reached and effectively covered
Lid.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the structural schematic diagram of metallic shield case provided in an embodiment of the present invention.
Label involved by above-mentioned attached drawing is detailed as follows：
1- shielded box ontologies；11- triangle metal sheets；12- quadrangle metallic plates.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
It should be noted that when component is referred to as " being fixed on " or " being set to " another component, it can directly or
It is connected on another component.When a component is referred to as " being connected to " another component, it can directly or indirectly be connected
It is connected on another component.
The orientation or positional relationship of the instructions such as term "upper", "lower", "left", "right" is orientation based on ... shown in the drawings or position
Set relationship, be merely for convenience of describing, do not indicate or imply the indicated device or element must have a particular orientation, with
Specific azimuth configuration and operation, therefore should not be understood as the limitation to this patent.Term " first ", " second " are used merely to facilitate
Purpose is described, relative importance is not understood to indicate or imply or implicitly indicates the quantity of technical characteristic." multiples' "
It is meant that two or more, unless otherwise specifically defined.
As shown in Figure 1, metallic shield case provided in an embodiment of the present invention includes the shielded box ontology 1 equipped with accommodating chamber,
The side wall of accommodating chamber is equipped at least one corner reflector, and the sky for destroying corner reflector is equipped on the endpoint of corner reflector
The triangle metal sheet 11 of cavity reflection.In embodiments of the present invention, by using triangle metal to plain edition radio shielding case
Plate 11 is effectively isolated, and enables cheap shielded box reach the isolation of supershielded case, but improvement cost price is insufficient
3000 yuan, and improved metallic shield case is equal to the common communication band (15MHz~6GHz) with radio frequency electric equipment
Effective covering can be reached.
Compared with prior art, the embodiment of the present invention on the endpoint of corner reflector by being equipped with for destroying corner reflector
Cavity reflection triangle metal sheet 11 so that metallic shield case can be effectively isolated wireless radiation source or right
Radiation is effectively shielded in shielded box.
Further, in one embodiment of the invention, corner reflector there are four being set on the side wall of accommodating chamber, the angle
Reflector refers to that three metal flats are vertical two-by-two, and this plane can manufacture strong multipath difference inside shielded box and pass
It is defeated, cause receiving terminal antenna to be interfered by difference.Multipath effect refers to electromagnetic wave after different propagateds, and each component fields reach
Destination time is different, is overlapped mutually and interferes by respective phase so that distorted signals originally, or generate mistake.
For example electromagnetic wave is propagated along two different paths, and the length of two paths just differs half wavelength, then two paths of signals
It has just cancelled out each other when reaching home (peaks and troughs coincidence), has caused to measure misalignment.In order to avoid such case occurs,
In the present embodiment, triangle metal sheet 11 is equipped on the endpoint of each corner reflector, wherein only gived wherein in Fig. 1
The endpoint of one corner reflector is equipped with the example of triangle metal sheet 11.
Further, in one embodiment of the invention, the cross section of triangle metal sheet 11 is in equilateral triangle, with
Triangle metal sheet 11 is set equably to destroy the cavity reflection of corner reflector.Preferably, in the present embodiment, triangle metal sheet
11 length of side is more than or equal to 12cm, and the thickness of triangle metal sheet 11 is more than or equal to 3cm, and the triangle metal sheet 11 fitting is put
It is placed in each corner reflector endpoint.
Further, in one embodiment of the invention, shielded box ontology 1 include one end respectively with triangle metal sheet
11 three wherein connected on one side piece quadrangle metallic plate 12.Specifically, one end of three pieces of quadrangle metallic plates 12 is respectively welded
In on three sides of triangle metal sheet 11, the quadrangle metallic plate 12 is for destroying the right angle in shielded box ontology 1, with three
Angled metal plate 11 destroys corner reflector structure together.Preferably, in the present embodiment, the cross section of the quadrangle metallic plate 12
Square or rectangle.It is further preferred that the quadrangle metallic plate 12 is iron plate.
Further, in one embodiment of the invention, powder pressing ferrite is laid on the side wall of accommodating chamber
The powder size of plank, the ferrite plank is 10 μm to 3nm, and powder pressing ferrite plank effectively can be transmitted and be absorbed
Electromagnetic radiation.Preferably, in the present embodiment, using 45 ° or 135 ° of edge intersections between adjacent ferrite plank.Further
Preferably, the thickness of ferrite plank is 5mm to 15mm, blocked up and seriously tie up in babinet effectively to be unlikely to ferrite plank
Use space.
Further, in one embodiment of the invention, normal inclination angle is offered on ferrite plank to be more than or equal to
60 ° of oblique trepanning, the trepanning are round and smooth aperture, avoid square edge or profile occurs.
Further, in one embodiment of the invention, be laid on ferrite plank thickness be 5mm to 9mm's
Wave layer is inhaled, which is used to the radiant electromagnetic energy of signal of communication being converted to thermal energy.Preferably, in the present embodiment,
It inhales wave layer and uses low-density ferrite powder material-colloid shielded layer, and seam crossing registration is more than 5cm, arbitrary two layers of material seam
As misaligned as possible, the profile of every ferrite plank uses on-right angle sawtooth.
Further, in one embodiment of the invention, the low close of 1mm to 5mm can also be laid outside shielded box
Spend ferrite powder material-colloid shielded layer.
In conclusion the metallic shield case Overall Reconstruction expense of the embodiment of the present invention is no more than 2000 yuan, in addition former existing
Cost is no more than 5000 yuan to 2000 yuan of babinet in total, but using effect can match in excellence or beauty 20000 yuan of high-end shielded box in the market
Product.Specifically, shielded box internal insulation degree effectively can be promoted 20db by the metallic shield case of the embodiment of the present invention, and cooperation is former
There is metallic shield case to carry the isolation of 60db, the high degree of isolation more than 70db may be implemented, and shielding can be effectively reduced
ELECTROMAGNETIC REFLECTION inside case.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. a kind of metallic shield case, which is characterized in that include the shielded box ontology equipped with accommodating chamber, on the side wall of the accommodating chamber
Equipped at least one corner reflector, the endpoint of the corner reflector is equipped with what the cavity for destroying the corner reflector reflected
Triangle metal sheet.
2. metallic shield case as described in claim 1, which is characterized in that the cross section of the triangle metal sheet is in equilateral three
It is angular.
3. metallic shield case as described in claim 1, which is characterized in that the shielded box ontology include one end respectively with it is described
Three wherein connected on one side piece quadrangle metallic plate of triangle metal sheet.
4. metallic shield case as claimed in claim 3, which is characterized in that the cross section of the quadrangle metallic plate is square
Or rectangle.
5. metallic shield case as claimed in claim 2, which is characterized in that the length of side of the triangle metal sheet is more than or equal to
The thickness of 12cm, the triangle metal sheet are more than or equal to 3cm.
6. such as metallic shield case described in any one of claim 1 to 5, which is characterized in that laid on the side wall of the accommodating chamber
There is powder to press ferrite plank, the powder size of the ferrite plank is 10 μm to 3nm.
7. metallic shield case as claimed in claim 6, which is characterized in that use 45 ° between the adjacent ferrite plank
Or 135 ° of edge intersections.
8. metallic shield case as claimed in claim 6, which is characterized in that the thickness of the ferrite plank is 5mm to 15mm.
9. metallic shield case as claimed in claim 6, which is characterized in that it is big to offer normal inclination angle on the ferrite plank
In the oblique trepanning equal to 60 °.
10. metallic shield case as claimed in claim 6, which is characterized in that it is 5mm to be laid with thickness on the ferrite plank
To the suction wave layer of 9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810090045.0A CN108366518B (en) | 2018-01-30 | 2018-01-30 | Metal shielding box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810090045.0A CN108366518B (en) | 2018-01-30 | 2018-01-30 | Metal shielding box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108366518A true CN108366518A (en) | 2018-08-03 |
| CN108366518B CN108366518B (en) | 2020-10-27 |
Family
ID=63007689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810090045.0A Active CN108366518B (en) | 2018-01-30 | 2018-01-30 | Metal shielding box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108366518B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599089A (en) * | 2018-11-21 | 2019-04-09 | 中国人民解放军海军工程大学 | A kind of underwater sound corner reflector with foam layer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1037424A (en) * | 1988-04-28 | 1989-11-22 | 澁谷茂一 | Radio-frequency unechoic chamber |
| JPH03138999A (en) * | 1989-10-24 | 1991-06-13 | Moichi Shibuya | Radio wave dark room using reflecting plate |
| EP0219639B1 (en) * | 1985-10-23 | 1991-09-25 | Robert Bosch Gmbh | Shielded casing for high frequencies |
| US5134405A (en) * | 1988-07-08 | 1992-07-28 | Matsushita Electric Industrial Co., Ltd. | Electromagnetically anechoic chamber and shield structures therefor |
| CN201475756U (en) * | 2009-07-29 | 2010-05-19 | 常州紫波电子科技有限公司 | Radio frequency induction ultraviolet device |
| JP2012191183A (en) * | 2011-02-22 | 2012-10-04 | Toray Ind Inc | Sheet material for radio wave absorber and radio wave absorber |
| CN205691764U (en) * | 2016-05-31 | 2016-11-16 | 北京环境特性研究所 | A kind of adjustable corner reflector of RCS main lobe direction |
-
2018
- 2018-01-30 CN CN201810090045.0A patent/CN108366518B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0219639B1 (en) * | 1985-10-23 | 1991-09-25 | Robert Bosch Gmbh | Shielded casing for high frequencies |
| CN1037424A (en) * | 1988-04-28 | 1989-11-22 | 澁谷茂一 | Radio-frequency unechoic chamber |
| US5134405A (en) * | 1988-07-08 | 1992-07-28 | Matsushita Electric Industrial Co., Ltd. | Electromagnetically anechoic chamber and shield structures therefor |
| JPH03138999A (en) * | 1989-10-24 | 1991-06-13 | Moichi Shibuya | Radio wave dark room using reflecting plate |
| CN201475756U (en) * | 2009-07-29 | 2010-05-19 | 常州紫波电子科技有限公司 | Radio frequency induction ultraviolet device |
| JP2012191183A (en) * | 2011-02-22 | 2012-10-04 | Toray Ind Inc | Sheet material for radio wave absorber and radio wave absorber |
| CN205691764U (en) * | 2016-05-31 | 2016-11-16 | 北京环境特性研究所 | A kind of adjustable corner reflector of RCS main lobe direction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599089A (en) * | 2018-11-21 | 2019-04-09 | 中国人民解放军海军工程大学 | A kind of underwater sound corner reflector with foam layer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108366518B (en) | 2020-10-27 |
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