CN202121923U - Dismountable shielding device - Google Patents
Dismountable shielding device Download PDFInfo
- Publication number
- CN202121923U CN202121923U CN2011201903977U CN201120190397U CN202121923U CN 202121923 U CN202121923 U CN 202121923U CN 2011201903977 U CN2011201903977 U CN 2011201903977U CN 201120190397 U CN201120190397 U CN 201120190397U CN 202121923 U CN202121923 U CN 202121923U
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- China
- Prior art keywords
- hollow frame
- cross
- section
- masking device
- top cover
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- Expired - Fee Related
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
A dismountable shielding device is used for preventing electromagnetic interference. The shielding device comprises a shielding cover, a hollow frame and a pre-broken part, wherein the shielding cover comprises a top cover and a retaining wall extending vertically along the edge of the top cover, the end of the retaining wall and far from the top cover is provided with a first cross section, the end of the hollow frame and opposite to the shielding cover is provided with a second cross section, the pre-broken part is connected between the first cross section of the shielding cover and the second cross section of the hollow frame, and the combination parts of the pre-broken part and the first and second cross sections are provided with pre-broken lines. The pre-broken part is torn off from the shielding cover and the hollow frame along the pre-broken lines, and the shielding cover cooperates with the hollow frame directly so as to form a shielding structure for preventing electromagnetic interference. With the structure, the dismountable shielding device can effectively prevent electromagnetic interference, is convenient in maintenance, and can be used repeatedly.
Description
Technical field
The utility model relates to a kind of removable masking device, is used to prevent electromagnetic interference.
Background technology
Usually, electronic equipment all possibly comprise the electric elements and the circuit that are subject to electromagnetic interference (EMI) and radio frequency interference (RFI) that is installed on the circuit board, and such EMI or RFI possibly be derived from the outer external source of endogenous or electronic equipment in the electronic equipment.But EMI or RFI cause degradation or complete obiteration, and cause electronic equipment efficient low even can not work fully.Therefore, can operate as normal in order to guarantee electronic equipment, electric elements or circuit should comprise EMI or RFI masking device, with the shielding interference signal.
Yet common masking device is a single structure, and this single-piece masking device generally adopts fixed forms such as trip to be fixed on the circuit board.Need circuit board be pulled down during maintenance, and it is just dismountable to discharge trip to force in back of circuit board, so just cause the repair demolition program complicated, and the gap between masking device and the circuit board is difficult to control, and is difficult to guarantee to prevent effectively EMI.
Therefore, provide a kind of removable masking device to become the problem that industry is eager to solve effectively to prevent EMI.
The utility model content
In view of this, a kind of removable masking device need be provided, to prevent electromagnetic interference.
Removable masking device in a kind of execution mode of the utility model is used to prevent electromagnetic interference, and said masking device comprises mask, hollow frame and prejudges portion.Said mask comprises top cover and the barricade that extends along the edge-perpendicular of said top cover, and the end away from said top cover of said barricade is provided with first cross section.One end of the said relatively mask of said hollow frame is provided with second cross section.Saidly prejudge portion and be connected between second cross section of first cross section and said hollow frame of said mask, prejudge portion and said first cross section and said second cross section and be provided with and prejudge line.
Preferably; Said barricade is provided with prominent rib; Said prominent rib is positioned at the side away from said top cover of said barricade; Said hollow frame comprises a plurality of convexities, and said convexity is positioned at the edge of said hollow frame, and said convexity is fastened between said top cover and the said prominent rib so that said mask is fastened on said hollow frame.
Preferably, said hollow frame comprises kink, and said kink forms depressed part between said kink and the said convexity, to accommodate said prominent rib along the vertical bending of an end away from said convexity of said hollow frame.
Preferably, the cross section of said prominent rib roughly is C type, U type or V-type.
It is preferably, said that to prejudge line be laciniation.
Compared to prior art; The removable masking device of the utility model is provided with lacerable portion of prejudging, before the maintenance between mask and hollow frame; Mask, hollow frame and prejudge portion by one-body molded and process, to prevent electromagnetic interference to constitute the masking device of single-piece.For easy to maintenance; Can tear along the line place of prejudging of prejudging portion; Tear between mask and hollow frame will prejudge portion, masking device is made up of mask and two of hollow frames, and cooperatively interacts through the prominent rib of mask and the depressed part of hollow frame; With mask and hollow frame secure bond, and then play the effect that prevents electromagnetic interference with two-piece type.This structure not only can effectively prevent electromagnetic interference, and, also being convenient to maintenance, can reuse.
Description of drawings
Fig. 1 is the structure chart of masking device before disassembling of the utility model.
Fig. 2 is the partial sectional view of masking device before disassembling of the utility model.
Fig. 3 removes the structure chart of prejudging portion for the masking device of the utility model.
Fig. 4 is the installation diagram of masking device after disassembling of the utility model.
Fig. 5 is the partial sectional view of masking device after disassembling of the utility model.
The main element symbol description
Barricade 16
Protruding 24
Prejudge portion 30
Prejudge line 34
Following embodiment will combine above-mentioned accompanying drawing to further specify the utility model.
Embodiment
Fig. 1 is the structure chart of masking device 100 in disassembling before of the utility model, and Fig. 2 is the partial sectional view of masking device 100 before disassembling of the utility model, and masking device 100 is used to shield the electromagnetic interference signal that electric elements or circuit (not shown) are produced.Before disassembling, masking device 100 is a single structure, comprises mask 10, hollow frame 20 and prejudges portion 30, prejudges portion 30 and is connected between mask 10 and the hollow frame 20.Hollow frame 20 comprises a plurality of location divisions 29, location division 29 be positioned at hollow frame 20 away from the one edge of prejudging portion 30.Match with the position, hole on the circuit board (not shown) in location division 29, so that masking device 100 is positioned to circuit board, and with being welded on the circuit board of hollow frame 20, to prevent electromagnetic interference.
In this execution mode, hollow frame 20 comprises kink 22, and said kink 22 is along enclosing vertical inwardly bending outside the hollow frame 20, and between kink 22 is with protruding 24 formation depressed part 26.
Prejudging portion 30 can tear from masking device 100 so that masking device 100 becomes two-part construction.Prejudge portion 30; Be connected between second cross section 28 of first cross section 168 and hollow frame 20 of mask 10; The joint portion 32 of prejudging portion 30 and first cross section 168 and second cross section 28 is provided with prejudges line 34; This is two opposing end surfaces of prejudging portion 30 to joint portion 32, and is relative with second cross section 28 with first cross section 168 respectively.Prejudge line 34 for to be located at the laciniation on the joint portion 32,, be connected between mask 10 and the hollow frame 20 so that prejudge portion 30 through prejudging between the line 34 connection joint portions 32 and first cross section 168 and second cross section 28.
Before disassembling, mask 10, hollow frame 20 and prejudge portion 30 by one-body molded and process.
Fig. 3 removes the structure chart of prejudging portion 30 for the masking device 100 of the utility model; In order to keep in repair needs; Only need to remove to prejudge portion 30; That is, along prejudging prejudging line 34 and will prejudging portion 30 and between mask 10 and hollow frame 20, tear off of portion 30, mask 10 directly cooperates with hollow frame 20 with the formation shielding construction and prevents electromagnetic interference.
Fig. 4 is the installation diagram of masking device 100 after disassembling of the utility model, and Fig. 5 is the partial sectional view of masking device 100 after disassembling of the utility model.When reusing, mask 10 is covered on the hollow frame 20, with shielding electric elements or circuit.Particularly, protruding 24 are fastened between top cover 12 and the prominent rib 164, so that mask 10 is fastened on the hollow frame 20.In this execution mode, when mask 10 covers at 20 last times of hollow frame, prominent rib 164 is contained in depressed part 26, so that mask 10 is fixedly installed on the hollow frame 20.Therefore, the masking device 100 after re-assemblying equally also can rib to the function that prevents electromagnetic interference, and this mode of disassembling can not destroyed the integrality between masking device 100 and the circuit board, thereby has protected circuit board effectively.
Claims (5)
1. a removable masking device is used to prevent electromagnetic interference, it is characterized in that, said removable masking device comprises:
Mask comprises top cover and the barricade that extends along the edge-perpendicular of said top cover, and the end away from said top cover of said barricade is provided with first cross section;
Hollow frame, an end of the said relatively mask of said hollow frame is provided with second cross section; And
Prejudge portion, be connected between second cross section of first cross section and said hollow frame of said mask, the joint portion of prejudging portion and said first cross section and said second cross section is provided with prejudges line.
2. removable masking device as claimed in claim 1; It is characterized in that; Said barricade is provided with prominent rib, and said prominent rib is positioned at the side away from said top cover of said barricade, and said hollow frame comprises a plurality of convexities; Said convexity is positioned at the edge of said hollow frame, and said convexity is fastened between said top cover and the said prominent rib so that said mask is fastened on said hollow frame.
3. removable masking device as claimed in claim 2; It is characterized in that said hollow frame comprises kink, said kink is along enclosing inwardly vertical bending outside the said hollow frame; Form depressed part between said kink and the said convexity, to accommodate said prominent rib.
4. removable masking device as claimed in claim 2 is characterized in that the cross section of said prominent rib roughly is C type, U type or V-type.
5. removable masking device as claimed in claim 1 is characterized in that, said to prejudge line be laciniation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201903977U CN202121923U (en) | 2011-06-08 | 2011-06-08 | Dismountable shielding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201903977U CN202121923U (en) | 2011-06-08 | 2011-06-08 | Dismountable shielding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202121923U true CN202121923U (en) | 2012-01-18 |
Family
ID=45462957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201903977U Expired - Fee Related CN202121923U (en) | 2011-06-08 | 2011-06-08 | Dismountable shielding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202121923U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106879239A (en) * | 2015-12-11 | 2017-06-20 | 莱尔德电子材料（上海）有限公司 | Board-level shield including paper tinsel and/or film cover |
| CN110870396A (en) * | 2017-07-31 | 2020-03-06 | 华为技术有限公司 | Shielding case and terminal |
-
2011
- 2011-06-08 CN CN2011201903977U patent/CN202121923U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106879239A (en) * | 2015-12-11 | 2017-06-20 | 莱尔德电子材料（上海）有限公司 | Board-level shield including paper tinsel and/or film cover |
| CN106879239B (en) * | 2015-12-11 | 2024-02-23 | 莱尔德电子材料（上海）有限公司 | Board-level shield comprising a foil and/or film cover |
| CN110870396A (en) * | 2017-07-31 | 2020-03-06 | 华为技术有限公司 | Shielding case and terminal |
| CN110870396B (en) * | 2017-07-31 | 2021-03-30 | 华为技术有限公司 | Shielding case and terminal |
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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 |
Granted publication date: 20120118 Termination date: 20170608 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |