CN101522014A - Electromagnetic screen - Google Patents
Electromagnetic screen Download PDFInfo
- Publication number
- CN101522014A CN101522014A CN200810081277A CN200810081277A CN101522014A CN 101522014 A CN101522014 A CN 101522014A CN 200810081277 A CN200810081277 A CN 200810081277A CN 200810081277 A CN200810081277 A CN 200810081277A CN 101522014 A CN101522014 A CN 101522014A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- lid
- framework
- electromagnetic screen
- electronic component
- 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.)
- Pending
Links
Images
Abstract
The invention provides an electromagnetic screen, comprising a framework and a cover; wherein the framework is formed by a strip structure which is bent and arranged on a circuit board provided with an electronic component and surrounds the electronic component; and the cover is provided with a top part and a plurality of lateral parts which are bent out from the top part. When the cover and the framework are combined, the lateral parts of the cover and the framework are tightly joined and the cover and the framework form a shielding space so as to surround the electronic component.
Description
Technical field
The invention relates to a kind of screening arrangement, and particularly relevant for a kind of electromagnetic screen of electronic component.
Background technology
Electromagnetic interference is one of inner common problem of electronic product.In detail; electronic component in the electronic product can generate electromagnetic waves when work usually; this electromagnetic wave can influence the signal quality and the service behaviour of other electron component; therefore (Electromagnetic Interference, protection EMI) is very important detection index of electronic product to electromagnetic interference.
With tuner (tuner) is example, and tuner is easy to generate electromagnetic wave when adjusting the operating frequency of electronic product, and influences the usefulness of other electron component.Similarly, along with the signal processing speed promotes and the circuit densification, the electromagnetic wave that electronic component produced is also adjusted usefulness to the frequency of tuner easily and is caused interference.
Summary of the invention
The invention provides a kind of electromagnetic screen, it can prevent that electromagnetic wave from leaking and external electromagnetic waves is infiltrated.
The present invention proposes a kind of electromagnetic screen, and it comprises framework and lid.Framework is bent into by rectangular structure, is arranged on the circuit board with electronic component, and around electronic component.Lid has top and a plurality of lid sidepiece, and these lid sidepieces bend out from the top.When lid combined with framework, these lid sidepieces and framework fluid-tight engagement, and lid and framework formation shielding space were to surround electronic component.
In one embodiment of this invention, has joint gap between two adjacent lid sidepieces, and the top is provided with a plurality of first depressed parts, joint gap between the adjacent lid sidepiece of each first depressed part contiguous two, when lid combined with framework, first depressed part can block joint gap and expose shielding space.
In one embodiment of this invention, the top more is provided with a plurality of second depressed parts, and these second depressed parts are arranged in a side of contiguous each the lid sidepiece in top.
In one embodiment of this invention, an end and its other end that is bent into the rectangular structure of framework is superimposed.
In one embodiment of this invention, framework is provided with fixed lobe, and each lid sidepiece is provided with fixing hole, and when lid combined with framework, fixed lobe and pairing fixing hole fastened.
In one embodiment of this invention, each framework sidepiece is provided with a plurality of pins, and circuit board is provided with a plurality of configurations hole, and these pins are arranged in these configuration holes.
In one embodiment of this invention, joint be arranged in these framework sidepieces one of them, and electrically connect with electronic component.
In one embodiment of this invention, electronic component is a tuner.
The present invention stamps out a rectangular plate by mould, and by the framework that rectangular panel-bending is become reservation shape as suitable boards such as bending machines.In addition, lid is after the bending operation of finishing the lid sidepiece, has a joint gap between two adjacent lid sidepieces, and when lid of the present invention combines with framework, except covering the most lid sidepiece joint gap by jointless framework, also can near the joint gap place depressed part be set at the top, cover remaining lid sidepiece joint gap with lid by depression, expose shielding space to block joint gap, and then make electromagnetic screen that better electromagnetic shielding ability be arranged, prevent that electromagnetic wave that electronic component is produced from leaking and prevent that outside electromagnetic wave from infiltrating the purpose in the electromagnetic screen to reach.
For above-mentioned feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
The electromagnetic screen that Figure 1A is depicted as one embodiment of the invention is arranged at circuit board, the electronic component on the circuit board is carried out the schematic diagram of shielding action.
Figure 1B is depicted as the electromagnetic screen of Figure 1A and the exploded view of circuit board.
Fig. 2 A is depicted as the constitutional diagram of the electromagnetic screen of another embodiment of the present invention.
Fig. 2 B is depicted as the exploded view of the electromagnetic screen of Fig. 2 A.
Embodiment
The electromagnetic screen that Figure 1A is depicted as one embodiment of the invention is arranged at circuit board, and with the schematic diagram that the electronic component on the circuit board is carried out shielding action, Figure 1B is depicted as the electromagnetic screen of Figure 1A and the exploded view of circuit board.
Please also refer to Figure 1A and Figure 1B, the electromagnetic screen 100 of present embodiment is suitable for being arranged on the circuit board 10 with electronic component 12.Wherein, the electronic component 12 shown in Figure 1B for example is a tuner, and electromagnetic screen 100 is promptly in order to the protection tuner, causes the tuner can't operate as normal to prevent outside electromagnetic wave from infiltrating in the electromagnetic screen 100.Certainly, electromagnetic screen 100 also can prevent that electromagnetic wave that tuner produces from leaking and influence the task performance of other electron component.
The electromagnetic screen 100 of present embodiment mainly comprises a framework 110 and a lid 120.In the present embodiment, framework 110 for example be by surface mount technology (Surface MountTechnology, SMT) or other suitable mode and being fixed on the circuit board 10, and around electronic component 12.Specifically, the framework 110 of present embodiment is a square framework, and it for example is to stamp out a rectangular plate by mould, again by for example be bending machine etc. suitably board with the tetragonal in this way frame structure of rectangular panel-bending precedent.The framework 110 of present embodiment can comprise that there is not joint gap in a plurality of framework sidepiece 112, two 112 adjacent of framework sidepieces.
For the joint gap of the outer surface that makes framework 110 does not cause electromagnetic wave penetrating, present embodiment is that the side with a framework sidepiece 112 ' is bent into one folding piece 112b, and with tabs 112b and another framework sidepiece 112 " surface be superimposed; the outer surface joint gap of framework 110 is sealed fully, form as present embodiment one seal framework 110.
The framework 110 of present embodiment is to be example with tetragonal frame structure, and in other embodiments, framework 110 can also be other polygonal frame structure, and this paper does not impose any restrictions at this.
In addition, the lid 120 of present embodiment is suitable for combining with framework 110, make the shielding space that constitutes of lid 120 and framework 110, surrounding electronic component 12, and then reach and prevent that electromagnetic wave that electronic component 12 is produced from leaking or prevent that outside electromagnetic wave from infiltrating the purpose in the electromagnetic screen 100.
Specifically, lid 120 is made of a top 122 and a plurality of lid sidepiece 124.These lid sidepieces 124 122 bend out from the top, and can cover framework 112.When lid 120 combined with framework 110, because framework 112 no joint gaps, and top 122 can be covered in the top of electronic component 12, these lid sidepieces 124 also can with framework 112 fluid-tight engagement.Therefore, outside electromagnetic wave promptly is difficult for infiltrating in the electromagnetic screen 100, is difficult for the task performance of electronic component 12 is caused harmful effect.Similarly, the electromagnetic wave that electronic component 12 produced also can be subjected to covering of electromagnetic screen 100 and be difficult for leaking, and the other electron component on the circuit board 10 is caused interference.
On the other hand, for making electromagnetic screen more advantages of favorable electromagnetic shielding effect is arranged, the present invention will be in hereinafter proposing another execution mode to promote the electromagnetic shielding ability of electromagnetic screen.Fig. 2 A promptly is depicted as the constitutional diagram of the electromagnetic screen of another embodiment of the present invention, and Fig. 2 B is depicted as the exploded view of the electromagnetic screen of Fig. 2 A.
Please also refer to Fig. 2 A and Fig. 2 B, the electromagnetic screen 200 of present embodiment is similar with the electromagnetic screen 100 of the foregoing description, only the two main difference is, lid 220 its tops 222 of present embodiment more are provided with a plurality of first recess 222a, to promote the electromagnetic shielding ability of electromagnetic screen 200 integral body.How to promote the electromagnetic shielding ability of electromagnetic screen 200 integral body about the design of the first recess 222a, present embodiment will be in hereinafter elaborating.
From the above, because lid 220 is after the bending that utilizes suitable board to finish lid sidepiece 224 is operated, two 224 adjacent of lid sidepieces have a joint gap S, therefore present embodiment can be provided with a plurality of first depressed part 222a in the top 222 of lid 220, and the equipping position of each first depressed part 222a is the joint gap S of 224 of contiguous two adjacent lid sidepieces.Thus, when lid 220 combined with framework 210, the first depressed part 222a can block joint gap S and expose shielding space.
In more detail; owing to do not have joint gap between the framework sidepiece 212; therefore when lid 220 combines fully with framework 210; most joint gap S promptly can be covered in the bonding part that two adjacent framework sidepieces are 212; and the first depressed part 222a of the contiguous joint gap S of equipping position can cover remaining joint gap S by the lid of depression, causes interference with the electronic component of avoiding outside electromagnetic wave to pass joint gap S and electromagnetic screen 200 is protected.Certainly, the electromagnetic wave that above-mentioned electronic component produced also can be subjected to covering of electromagnetic screen 200 and be difficult for other electronic components are caused interference.In other words, the joint gap S on the lid 220 can not expose shielding space, makes electromagnetic screen 200 have more good electrical magnetic screen ability.
In addition, present embodiment more can be provided with a plurality of second depressed part 222b in the top 222 of lid 220.Wherein, these second depressed parts 222b for example is a side that is arranged in top 222 contiguous each lid sidepiece 224, to increase the structural strength of lid 220.In addition, for making good affixed character is arranged between lid 220 and the framework 210, present embodiment also can be provided with at least one fixed lobe 212b in framework 212, in each lid sidepiece 224 at least one fixing hole 224a corresponding with fixed lobe 212b is set, and when lid 220 combines with framework 210, fixed lobe 212b and pairing fixing hole 224a promptly can fasten, and then make lid 220 can firmly be fixed in framework 210.
In sum, in electromagnetic screen of the present invention, because framework is the frame structure that is become by rectangular panel-bending, so there is not joint gap in framework.Thus, when lid combined with framework, lid can form a shielding space with framework, surrounding electronic component, and then prevented that electromagnetic wave that electronic component produces from leaking and prevented that outside electromagnetic wave from infiltrating in the electromagnetic screen.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (8)
1. an electromagnetic screen is characterized in that, comprising:
Framework is bent into by rectangular structure, is arranged on the circuit board with electronic component, and around above-mentioned electronic component; And
Lid has top and a plurality of lid sidepiece, and above-mentioned these lid sidepieces bend out from above-mentioned top;
When above-mentioned lid combined with above-mentioned framework, above-mentioned these lid sidepieces and above-mentioned framework fluid-tight engagement formed shielding space, to surround above-mentioned electronic component.
2. electromagnetic screen according to claim 1, it is characterized in that, wherein has joint gap between two adjacent above-mentioned these lid sidepieces, and above-mentioned top is provided with a plurality of first depressed parts, joint gap between adjacent above-mentioned these lid sidepieces of each above-mentioned first depressed part contiguous two, when above-mentioned lid combined with above-mentioned framework, above-mentioned first depressed part blocked above-mentioned joint gap and exposes above-mentioned shielding space.
3. electromagnetic screen according to claim 1 is characterized in that, wherein above-mentioned top more is provided with a plurality of second depressed parts, and above-mentioned these second depressed parts are arranged in a side of contiguous each the above-mentioned lid sidepiece in above-mentioned top.
4. electromagnetic screen according to claim 1 is characterized in that, wherein an end of above-mentioned rectangular structure and its other end are superimposed.
5. electromagnetic screen according to claim 1, it is characterized in that wherein each above-mentioned framework is provided with at least one fixed lobe, each above-mentioned lid sidepiece is provided with at least one fixing hole, and when above-mentioned lid combined with above-mentioned framework, the said fixing projection fastened with pairing said fixing hole.
6. electromagnetic screen according to claim 1 is characterized in that, wherein each above-mentioned framework is provided with a plurality of pins, and the foregoing circuit plate is provided with a plurality of configurations hole, and above-mentioned these pins are arranged in above-mentioned these configuration holes.
7. electromagnetic screen according to claim 1 is characterized in that, its center tap be arranged in above-mentioned these frameworks one of them, and electrically connect with above-mentioned electronic component.
8. electromagnetic screen according to claim 1 is characterized in that, wherein above-mentioned electronic component is a tuner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810081277A CN101522014A (en) | 2008-02-26 | 2008-02-26 | Electromagnetic screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810081277A CN101522014A (en) | 2008-02-26 | 2008-02-26 | Electromagnetic screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101522014A true CN101522014A (en) | 2009-09-02 |
Family
ID=41082300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810081277A Pending CN101522014A (en) | 2008-02-26 | 2008-02-26 | Electromagnetic screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101522014A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106255399A (en) * | 2016-09-26 | 2016-12-21 | 宇龙计算机通信科技(深圳)有限公司 | A kind of radome |
-
2008
- 2008-02-26 CN CN200810081277A patent/CN101522014A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106255399A (en) * | 2016-09-26 | 2016-12-21 | 宇龙计算机通信科技(深圳)有限公司 | A kind of radome |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7986533B2 (en) | Shielding assembly and electronic device utilizing the same | |
| CN106662900A (en) | Screen components and electronic devices with fingerprint modules | |
| US7952889B2 (en) | Stacking structure of printed circuit board | |
| KR20130038503A (en) | Sturcture for stacking printed board assemblies in an electronic device | |
| JP2010080854A (en) | Electronic equipment | |
| EP1705978B1 (en) | Electronic circuit unit and its shielding structure | |
| CN105138161A (en) | Touch control display device | |
| US8223507B2 (en) | Electronic circuit and method for making electronic circuit | |
| JP4527035B2 (en) | Shield structure | |
| JP2008218526A (en) | Shielding case and electronic apparatus | |
| US8373076B2 (en) | Shielding assembly | |
| CN101522014A (en) | Electromagnetic screen | |
| JP2011109289A (en) | Mobile terminal apparatus | |
| US20130284510A1 (en) | Electromagnetic shielding cover and device having the same | |
| US20090211800A1 (en) | Electromagnetic shielding device | |
| JP4510860B2 (en) | Mobile terminal device | |
| CN206977919U (en) | Mobile terminal and its radome | |
| JP2012146823A (en) | Shield method and electronic apparatus | |
| JP2011054888A (en) | Shield structure and electronic apparatus | |
| JP4659625B2 (en) | Electronics | |
| JP2013211249A (en) | Shield plate and connector mounted with the shield plate | |
| KR20120035673A (en) | Package substrate | |
| JP3222998U (en) | Duplexers, distributors and connectors | |
| JP2013038154A (en) | Flexible printed circuit board structure | |
| TW200930226A (en) | Stacking structure of printed circuit board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090902 |