CN202005117U - Electromagnetic screen device - Google Patents
Electromagnetic screen device Download PDFInfo
- Publication number
- CN202005117U CN202005117U CN2011200540393U CN201120054039U CN202005117U CN 202005117 U CN202005117 U CN 202005117U CN 2011200540393 U CN2011200540393 U CN 2011200540393U CN 201120054039 U CN201120054039 U CN 201120054039U CN 202005117 U CN202005117 U CN 202005117U
- Authority
- CN
- China
- Prior art keywords
- sidewall
- roof
- circuit board
- electromagnetic screen
- conductive junction
- 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
Links
Images
Abstract
An electromagnetic screen device comprises a first screen cover and a second screen cover. The first screen cover comprises a first top wall, a first lateral wall and a pair of second lateral walls arranged oppositely. The first top wall, the first lateral wall and the second lateral walls together form a cover body with a first opening, and a clamping portion is arranged at an edge of the first top wall close to the first opening. The second screen cover comprises a second top wall, a third lateral wall and a pair of fourth lateral walls arranged oppositely, and the second top wall, the third lateral wall and the fourth lateral walls together form a cover body with a second opening. The first opening of the first screen cover and the second opening of the second screen cover are opposite to each other so that the first screen cover and the second screen cover are butted. The second screen cover is inserted into the first screen cover, and the clamping portion is matched with one of locating portions so as to clamp the first screen cover and the second screen cover. The electromagnetic screen device can save molds and reduce development cost.
Description
Technical field
The utility model relates to a kind of electromagnetic screen, relates in particular to a kind of detachable electromagnetic screen.
Background technology
General electronic equipment all is equipped with numerous electronic devices and components as television set, computer, testing equipment etc.When electronic device works, electronic devices and components will generate electromagnetic waves, and so not only make inner electronic devices and components can produce electromagnetic interference, influence the operate as normal of electronic equipment, and electromagnetic wave can damage also to external radiation to human body.Therefore, the electromagnetic wave how the screening electron components and parts produce has become the problem that industry presses for solution.
The sidewall that the cover body that the electromagnetic screen that industry adopts usually is formed in one, described cover body have roof and go out from roof periphery vertical extent.During use, described cover body is covered on the electronic devices and components of required shielding, and sidewall is fixed on the circuit board that described electronic devices and components are set by modes such as welding.Yet in actual production or maintenance process, when electronic devices and components went wrong, the engineering staff needed earlier electromagnetic screen to be separated postwelding and pulls down, and just can check electronic devices and components then.Above-mentioned electromagnetic screen makes engineering staff's inconvenience when operating maintenance.
The utility model content
In view of this, be necessary the electromagnetic screen that provides a kind of engineering staff of convenience to operate and keep in repair.
The electromagnetic screen that the utility model provides is used to cover electronic devices and components on the circuit board with shielding electromagnetic wave.Described electromagnetic screen comprises first screening cover and secondary shielding lid.Described first screening cover comprises second sidewall of first roof, the first side wall and pair of opposing, described first roof is provided with clamping part, described the first side wall is from one of described first roof end vertical extent, described second sidewall is respectively from the both sides of described first roof vertical extent, the common cover body with first opening that forms of described first roof and described the first side wall and described second sidewall, described clamping part is located at the edge near described first opening of described first roof.Described secondary shielding lid comprises the 4th sidewall of second roof, the 3rd sidewall and pair of opposing, described second roof is provided with a plurality of location divisions, described the 3rd sidewall is from one of described second roof end vertical extent, described the 4th sidewall is respectively from the both sides of described second roof vertical extent, and the common formation of described second roof and described the 3rd sidewall and described the 4th sidewall has the cover body of second opening.Relative described first screening cover and the described secondary shielding lid made from second opening of described secondary shielding lid of first opening of described first screening cover connects, described secondary shielding lid inserts described first screening cover, and one in described clamping part and the described location division cooperates to fasten described first screening cover and described secondary shielding and covers.
Preferably, described clamping part is an elastic clamping hook, and described location division is a fastening hole, and described elastic clamping hook fastens to form a plurality of sealing cover bodies with different shielding spaces with different described fastening holes respectively.
Preferably, the two ends of described the first side wall and described the 3rd sidewall are respectively equipped with lever.
Preferably, the outer surface of second opening part of described secondary shielding lid is provided with a plurality of conductive junction points, and described conductive junction point contacts with surface within described first roof.
Preferably, the bottom of described the first side wall and described the 3rd sidewall is provided with a plurality of fence type conductive junction points, described fence type conductive junction point contacts with the point that described circuit board forms continous way, to increase the conductivity between described fence type conductive junction point and the described circuit board.
Preferably, the bottom of described second sidewall is provided with a plurality of perforating conductive junction points, and described perforating conductive junction point contacts to increase the conductivity between described perforating conductive junction point and the described circuit board with naked copper district on the described circuit board.
Preferably, the bottom of described the 4th sidewall is provided with a plurality of zigzag conductive junction points, and described zigzag conductive junction point contacts to increase the conductivity between described zigzag conductive junction point and the described circuit board with naked copper district on the described circuit board.
Preferably, described circuit board is provided with a plurality of location holes, and the bottom of described second sidewall and described the 4th sidewall is provided with a plurality of angles, and described angle cooperates with described location hole respectively described electromagnetic screen is fixed in described circuit board.
Preferably, each angle comprises trip, described trip forms draw-in groove respectively and between described the first side wall and described second sidewall, described trip passes described location hole, and mobile in opposite directions by to described first screening cover and secondary shielding lid, make described circuit-board card be fixed in the described draw-in groove.
The electromagnetic screen that the utility model provides, clamping part by the first screening cover setting cooperates respectively to adjust the size of different shielding spaces with a plurality of location divisions that the secondary shielding lid is provided with respectively, thereby satisfy the shielding demand of the electronic devices and components of different sizes, can save number of molds, reduce development cost.Simultaneously, angle is set electromagnetic screen is fixed on the circuit board by covering at first screening cover and secondary shielding, when the electronic devices and components on the circuit board go wrong, the engineering staff can keep in repair detection with two screening cover dismountings to electronic devices and components at any time, after finishing, maintenance can greatly facilitate engineering staff's operation expediently with being fixed on the circuit board after the screening cover butt joint.
Description of drawings
Fig. 1 is the three-dimensional installation diagram that electromagnetic screen is installed on circuit board in the utility model one embodiment, and described electromagnetic screen can be adjusted to four different shielding spaces.
Fig. 2 is the exploded perspective view of electromagnetic screen among Fig. 1.
Fig. 3 be among Fig. 1 electromagnetic screen schematic perspective view.
Fig. 4 is the schematic diagram of first screening cover among Fig. 1.
Fig. 5 is the schematic diagram of secondary shielding lid among Fig. 1.
The main element symbol description
Clamping part 111
The first side wall 12
First opening 14
The 3rd sidewall 22
The 4th sidewall 23
Draw-in groove 32
Lever 40
Electronic devices and components 210
Embodiment
Please be simultaneously with reference to Fig. 1, Fig. 2 and Fig. 3.Electromagnetic screen 100 is used to cover electronic devices and components 210 on the circuit board 200 with shielding electromagnetic wave.Electromagnetic screen 100 is formed by first screening cover 10 and secondary shielding lid 20 mutual snappings.The electromagnetic screen 100 that the utility model provides can be adjusted different shielding spaces to satisfy the shielding demand of the big or small electronic devices and components 210 of difference.In the present embodiment, electromagnetic screen 100 can and be fixed in circuit board 200 according to four kinds of different shielding spaces of size conversion of electronic devices and components 210, can reduce mould development and manufacturing cost.
Please refer to Fig. 4.First screening cover 10 comprises second sidewall 13 of first roof 11, the first side wall 12 and pair of opposing.First roof 11 is provided with clamping part 111, and the first side wall 12 is from one of first roof end vertical extent, and second sidewall 13 is stated the both sides vertical extent of first roof 11 respectively.First roof 11 and described the first side wall 12 and described second sidewall, the 13 common cover bodies with first opening 14 that form, clamping part 111 is located at the edge near first opening 14 of first roof 11.In the present embodiment, clamping part 111 is an elastic clamping hook, and described elastic clamping hook forms by the folding that bends in first roof, 11 upper punches.
Please refer to Fig. 5.Secondary shielding lid 20 comprises the 4th sidewall 23 of second roof 21, the 3rd sidewall 22 and pair of opposing.Second roof 21 is provided with a plurality of location divisions 211, the three sidewalls 22 from one of second roof 21 end vertical extent, and the 4th sidewall 23 is respectively from the both sides vertical extent of second roof 21.Second roof 21 and the 3rd sidewall 22 and the 4th sidewall 23 common cover bodies that form with second opening 24.In the present embodiment, location division 211 is a fastening hole, and described fastening hole forms by punching press on second roof 21.
First opening 14 of first screening cover 10 is relative with second opening 24 of secondary shielding lid 20, first screening cover 10 and secondary shielding lid 20 are connected, and secondary shielding lid 20 inserts in first screening cover 10, and one in clamping part 111 and the described location division 211 cooperates to fasten described first screening cover 10 and covers 20 with described secondary shielding.In the present embodiment, described clamping part 111 with fasten to form four sealing cover bodies with described four location divisions 211 respectively with different shielding spaces.
In the present embodiment, each screening cover 10,20 comprises at least one pair of angle that is oppositely arranged 30.Each angle 30 extends to form from corresponding second sidewall 13 and the 4th sidewall 23 respectively.Angle 30 comprises trip 31, forms draw-in groove 32 between trip 31 and corresponding second sidewall 13 and the 4th sidewall 23.The draw-in groove 32 of the angle 30 of first screening cover 10 is relative with the draw-in groove 32 of the angle 30 of secondary shielding lid 20.Circuit board 200 comprises the location hole 220 that cooperates with angle 30.When screening cover 10,20 is installed on circuit board 200, the trip 31 of angle 30 passes positioning hole corresponding 220 respectively, and pass through moving in opposite directions of screening cover 10,20, make circuit board 200 be fastened in the draw-in groove 32, thereby make screening cover 10,20 be fixed in circuit board 200.When need were adjusted the shielding space of electromagnetic screen 100, the relative position of the location hole 220 that circuit board 200 cooperates with angle 30 was also adjusted thereupon, to satisfy the demand of different shielding spaces.In the present embodiment, each screening cover 10,20 comprises two pairs of angles that are oppositely arranged 30, so that screening cover 10,20 firmly is fixed in circuit board 200.
During installation, first opening 14 of first screening cover 10 and second opening 24 of secondary shielding lid 20 relatively are located on the circuit board 200, the angle 30 of described screening cover 10,20 passes respectively in the positioning hole corresponding 220 of circuit board 200.Force in described screening cover 10,20, described screening cover 10,20 is moved in opposite directions, circuit board 200 is fastened in the draw-in groove 32 of angle 30.Simultaneously, one of a plurality of location divisions 211 of the clamping part 111 of first screening cover 10 and secondary shielding lid 20 person cooperates, second opening 24 of secondary shielding lid 20 is contained in first opening 14 of first screening cover 10, first roof 11 and second sidewall 13 of the screening cover 10 of winning are contacted respectively with second roof 21 and the 4th sidewall 23 of secondary shielding lid 20 respectively, thereby make the cover body of a sealing of first screening cover 10 and secondary shielding lid, 20 formation, to reach the effect of electromagnetic shielding.When need are adjusted shielding space, only need that screening cover 10,20 is positioned location hole different on the circuit board 200 220 and get final product.
When need are dismantled described electro-magnetic shielding cover 100, the clamping part 111 that the operator only needs to remove first screening cover 10 by instrument and secondary shielding cover cooperating between 20 the location division 211, and force in screening cover 10,20, make described screening cover 10,20 separated from one another, circuit board 200 withdraws from the draw-in groove 32 of screening cover 10,20, screening cover 10,20 dismountings can be greatly facilitated engineering staff's operation.
As further improvement of the utility model, the two ends of the 3rd sidewall 22 of the first side wall 12 of first screening cover 10 and secondary shielding lid 20 are provided with lever 40 respectively.Force in lever 40 make first screening cover 10 and secondary shielding cover 20 separated from one another with the dismounting electromagnetic screen 100, thereby reach order ground, labour-saving.
In the present embodiment, the surface is provided with a plurality of conductive junction points 50 outside second opening 24 of secondary shielding lid 20, the surperficial contact within first roof 11 of described conductive junction point 50 and first screening cover 10.The setting of described conductive junction point 50, make first screening cover 10 and secondary shielding lid 20 in the process of assembling, produce friction and cover contacting between 20 with secondary shielding, thereby guarantee that the electromagnetism noise can not leak from the slit between first screening cover 10 and the secondary shielding lid 20 to increase by first screening cover 10.
The bottom of the 3rd sidewall 22 of the first side wall 12 of first screening cover 10 and secondary shielding lid 20 is provided with a plurality of fence type conductive junction points 60, described fence type conductive junction point 60 contacts with the point that described circuit board 200 naked coppers zone forms continous way, and utilizes the elastic construction increase fence type conductive junction point 60 of fence type conductive junction point 60 flangings and the conductivity between the circuit board 200.
The bottom of second sidewall 13 of first screening cover 10 is provided with a plurality of perforating conductive junction points 70.The bottom of the 4th sidewall 23 of secondary shielding lid 20 is provided with a plurality of zigzag conductive junction points 80.Described perforating conductive junction point 70 and zigzag conductive junction point 80 contact with naked copper district on the circuit board 200 to increase the conductivity between conductive junction point 70,80 and the circuit board 200 respectively.
The electromagnetic screen that the utility model provides, clamping part by the first screening cover setting cooperates respectively to adjust the size of different shielding spaces with a plurality of location divisions that the secondary shielding lid is provided with respectively, thereby satisfy the shielding demand of the electronic devices and components of different sizes, can save number of molds, reduce development cost.Simultaneously, angle is set electromagnetic screen is fixed on the circuit board by covering at first screening cover and secondary shielding, when the electronic devices and components on the circuit board go wrong, the engineering staff can keep in repair detection with two screening cover dismountings to electronic devices and components at any time, after finishing, maintenance can greatly facilitate engineering staff's operation expediently with being fixed on the circuit board after the screening cover butt joint.
Claims (9)
1. electromagnetic screen is used to cover electronic devices and components on the circuit board with shielding electromagnetic wave, it is characterized in that described electromagnetic screen comprises:
First screening cover, second sidewall that comprises first roof, the first side wall and pair of opposing, described first roof is provided with clamping part, described the first side wall is from one of described first roof end vertical extent, described second sidewall is respectively from the both sides of described first roof vertical extent, the common cover body that forms of described first roof and described the first side wall and described second sidewall with first opening, described clamping part is located at the edge near described first opening of described first roof; And
The secondary shielding lid, the 4th sidewall that comprises second roof, the 3rd sidewall and pair of opposing, described second roof is provided with a plurality of location divisions, described the 3rd sidewall is from one of described second roof end vertical extent, described the 4th sidewall is respectively from the both sides of described second roof vertical extent, and the common formation of described second roof and described the 3rd sidewall and described the 4th sidewall has the cover body of second opening;
Relative described first screening cover and the described secondary shielding lid made from second opening of described secondary shielding lid of first opening of described first screening cover connects, described secondary shielding lid inserts described first screening cover, and a cooperation in the described location division of described clamping part is to fasten described first screening cover and described secondary shielding lid.
2. electromagnetic screen as claimed in claim 1 is characterized in that, described clamping part is an elastic clamping hook, and described location division is a fastening hole, and described elastic clamping hook fastens to form a plurality of sealing cover bodies with different shielding spaces with different described fastening holes respectively.
3. electromagnetic screen as claimed in claim 1 is characterized in that, the two ends of described the first side wall and described the 3rd sidewall are respectively equipped with lever.
4. electromagnetic screen as claimed in claim 1 is characterized in that, the outer surface of second opening part of described second roof is provided with a plurality of conductive junction points, and described conductive junction point contacts with surface within described first roof.
5. electromagnetic screen as claimed in claim 1, it is characterized in that, the bottom of described the first side wall and described the 3rd sidewall is provided with a plurality of fence type conductive junction points, described fence type conductive junction point contacts with the point that described circuit board forms continous way, to increase the conductivity between described fence type conductive junction point and the described circuit board.
6. electromagnetic screen as claimed in claim 1, it is characterized in that, the bottom of described second sidewall is provided with a plurality of perforating conductive junction points, and described perforating conductive junction point contacts to increase the conductivity between described perforating conductive junction point and the described circuit board with naked copper district on the described circuit board.
7. electromagnetic screen as claimed in claim 1, it is characterized in that, the bottom of described the 4th sidewall is provided with a plurality of zigzag conductive junction points, and described zigzag conductive junction point contacts to increase the conductivity between described zigzag conductive junction point and the described circuit board with naked copper district on the described circuit board.
8. electromagnetic screen as claimed in claim 1, it is characterized in that, described circuit board is provided with a plurality of location holes, the bottom of described second sidewall and described the 4th sidewall is provided with a plurality of angles, and described angle cooperates with described location hole respectively described electromagnetic screen is fixed in described circuit board.
9. electromagnetic screen as claimed in claim 8, it is characterized in that, each angle comprises trip, described trip forms draw-in groove respectively and between described the first side wall and described second sidewall, described trip passes described location hole, and mobile in opposite directions by to described first screening cover and secondary shielding lid, make described circuit-board card be fixed in the described draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200540393U CN202005117U (en) | 2011-03-03 | 2011-03-03 | Electromagnetic screen device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200540393U CN202005117U (en) | 2011-03-03 | 2011-03-03 | Electromagnetic screen device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202005117U true CN202005117U (en) | 2011-10-05 |
Family
ID=44707839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200540393U Expired - Fee Related CN202005117U (en) | 2011-03-03 | 2011-03-03 | Electromagnetic screen device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202005117U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104053029A (en) * | 2014-06-25 | 2014-09-17 | 深圳市九洲电器有限公司 | Fixing structure of front control board of set top box and set top box |
| CN105101763A (en) * | 2014-05-09 | 2015-11-25 | 国基电子（上海）有限公司 | Shielding cover |
| CN105230145A (en) * | 2013-03-28 | 2016-01-06 | 惠普发展公司，有限责任合伙企业 | For the protective cover of electronic equipment |
| CN105667108A (en) * | 2016-03-30 | 2016-06-15 | 上海维衡精密电子股份有限公司 | Metal shielding cover material strap type insulation paint printing method and metal shielding cover material strap |
| CN106817887B (en) * | 2015-11-30 | 2020-08-18 | 深圳富泰宏精密工业有限公司 | Shielding case, shielding case assembly and electronic device applying shielding case assembly |
-
2011
- 2011-03-03 CN CN2011200540393U patent/CN202005117U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105230145A (en) * | 2013-03-28 | 2016-01-06 | 惠普发展公司，有限责任合伙企业 | For the protective cover of electronic equipment |
| CN105230145B (en) * | 2013-03-28 | 2019-03-08 | 安提特软件有限责任公司 | Shield for electronic equipment |
| CN105101763A (en) * | 2014-05-09 | 2015-11-25 | 国基电子（上海）有限公司 | Shielding cover |
| CN104053029A (en) * | 2014-06-25 | 2014-09-17 | 深圳市九洲电器有限公司 | Fixing structure of front control board of set top box and set top box |
| CN106817887B (en) * | 2015-11-30 | 2020-08-18 | 深圳富泰宏精密工业有限公司 | Shielding case, shielding case assembly and electronic device applying shielding case assembly |
| CN105667108A (en) * | 2016-03-30 | 2016-06-15 | 上海维衡精密电子股份有限公司 | Metal shielding cover material strap type insulation paint printing method and metal shielding cover material strap |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202005117U (en) | Electromagnetic screen device | |
| CN203775598U (en) | Electromagnetic interference shielding device including framework equipped with latch characteristic part having drawing portion | |
| CN203691859U (en) | Dual-layer shielding cover with electromagnetic shielding function | |
| CN101410003B (en) | Shielding cover and shielding device | |
| CN101278608A (en) | EMI shields and related manufacturing methods | |
| CN205864959U (en) | Screening arrangement and electronic equipment | |
| CN201657596U (en) | Electromagnetic screen | |
| CN201774795U (en) | Electromagnetic shielding case | |
| CN201355694Y (en) | Electric connector component | |
| CN101340806A (en) | Screening arrangement and method for producing the same | |
| CN102548370A (en) | Shielding cover and manufacturing method thereof | |
| CN106817887B (en) | Shielding case, shielding case assembly and electronic device applying shielding case assembly | |
| CN102999095B (en) | Electronic device | |
| CN202656228U (en) | Bakelite plate for perforating printed circuit boards (PCBs) and drilling machine with bakelite plate | |
| US20110192626A1 (en) | Apparatus with case | |
| CN201504386U (en) | Electronic component shielding device and circuit board module provided therewith | |
| CN203553839U (en) | Grounding device of bus duct | |
| CN102612307A (en) | Easily-welded shielding cover | |
| CN201976339U (en) | High-density laminated printed circuit board and explosion-proof structure thereof | |
| CN202135444U (en) | Mutually-clamped shield cover | |
| CN201387802Y (en) | Plane transformer | |
| CN210053643U (en) | Body type flexible circuit board and electronic equipment | |
| CN205491528U (en) | Electronic equipment and shell structure thereof | |
| CN202014429U (en) | Electronic device | |
| CN203859929U (en) | PCB with stamp holes |
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: 20111005 Termination date: 20170303 |