CN201115279Y - Electromagnetic interference prevention shielding device - Google Patents
Electromagnetic interference prevention shielding device Download PDFInfo
- Publication number
- CN201115279Y CN201115279Y CNU2007201556797U CN200720155679U CN201115279Y CN 201115279 Y CN201115279 Y CN 201115279Y CN U2007201556797 U CNU2007201556797 U CN U2007201556797U CN 200720155679 U CN200720155679 U CN 200720155679U CN 201115279 Y CN201115279 Y CN 201115279Y
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- CN
- China
- Prior art keywords
- protective barrier
- memory module
- screening arrangement
- circuit board
- electromagnetic interference
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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.)
- Expired - Lifetime
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Abstract
A shielding device for preventing electromagnetic interference is covered on a memory module on a circuit board with slots for inlaying the memory module; a plurality of pins electrically connected with the circuit board are arranged in the slots; the shielding device has a plurality of protective barriers and is arranged on the opposite sides and the pin position of the memory module to shield electromagnetic wave signals signaled from the memory module and the pins; the protective barriers are contacted with at least one grounding point to guide the electromagnetic wave signals to the grounding points, thus greatly reducing the electromagnetic-wave interference of the electric device. Besides, the shielding device provided by the utility model is not completely covered on the memory module and the slots so as to rapidly dissipate the heat produced by the memory module and simultaneously have the effect of good anti electromagnetic interference and excellent efficiency. The shielding device consists of a plurality of shielding walls, is easy to manufacture, can be manufactured in mass by modularization; besides, the assembling action with an electric device is simple and convenient.
Description
Technical field
The utility model relates to a kind of screening arrangement, and particularly a kind of memory module that prevents produces the screening arrangement of electromagnetic interference.
Background technology
Along with the volume of electronic installation is constantly microminiaturized, and the operation function of electronic installation and processing speed are powerful fast day by day, the motherboard and the electronics spare part thereof that are installed in electronic installation inside also must dwindle thereupon, also must possess higher computing frequency simultaneously, to meet present user's instructions for use.
Yet the electronics spare part of high workload frequency is added the electronic installation of miniature volume, will make galvanomagnetic effect more amplify, and causes too much electromagnetic wave to leak, and produce serious electromagnetic interference phenomenon (Electromagnetic Interference, EMI).The operation of other electronic building brick in the electronic installation is subjected to the influence of electromagnetic interference, and causes that system's instability of electronic installation, communication quality reduce, and problem such as deadlock, severe patient even cause the damage of whole electronic installation.
In addition, at present electromagnetic wave is more and more paid attention to influence that human body and electrical appliance caused in countries in the world, therefore detect also strict day by day for the electromagnetic intensity that electronic installation produced, the electronic installation that manufacturer produced must meet the electromagnetic wave safety standard of various countries institute standard, qualified electronic product can be imported this state and sell.
In order to reduce the influence that electromagnetic interference causes, and meet the safety test stone of various countries to electromagnetic intensity, manufacturer just is provided with corresponding electromagnetic protection mechanism in electronic installation, too high electromagnetic wave signal is suitably blocked or lead off, the electromagnetic intensity that leaks with reduction.
In No. 508069 patent case of TaiWan, China patent, utilize a plurality of shell fragments that extend from sheet metal electrically to contact with ground contact, to lead the electromagnetic wave that sheet metal is responded to off, reduce the electromagnetic interference phenomenon that electromagnetic wave produced.Though No. 508069 the patent case can be led electromagnetic wave off derivation, cause the wiring of circuit board to reconfigure also, and be difficult for wiring (layout) position of design circuit.
At No. the 555361st, TaiWan, China, M241841 number, M307294 number, No. 455056, and United States Patent (USP) the 7th, 063, disclose in the patent such as No. 539, No. 2006/0089051, being overlying on the outer metal cover body of electronic building brick by a cover electrically contacts with earth terminal, the electromagnetic interference that electronic building brick produced is directed into earth terminal, to reduce electromagnetic interference.
Yet, in above-mentioned patent, its electronic building brick is coated in the metal cover body fully, to block the electromagnetic radiation of sending from electronic building brick, electronic building brick is carried out the heat energy that action is produced, and can't loose smoothly through the small open-work on the cover body and remove, and causes the working temperature of electronic installation inside too high, and then cause the overall operation efficiency of electronic installation to reduce, or even the result who damages.
United States Patent (USP) the 6th, 343, No. 020 a kind of memory bus module of Patent publish, it has a metal housing, and on housing one side, form rubber-like buckle arm and contact site, the buckle arm wears hook on memory module, and contact site electrically contacts with grounding parts on the memory module, to form grounding path.
The U.S. the 6th, 343, No. 020 patent utilization one housing blocks a side of memory module, actual unsatisfactory in blocking electromagnetic effect, and the buckle arm wears and hook in memory module, make that the man-hour of assembled configuration is long, assembling flow path is too complicated, cause production efficiency not good, and the buckle arm is easy to generate and come off or the problem that ruptures, during actual the use and inconvenient.
How effectively reducing from the electromagnetic wave signal that electronic building brick sent, and the electromagnetic interference that is caused, and solve the heat dissipation problem of electronic building brick simultaneously, is present those skilled in the relevant art problems anxious to be overcome.
Summary of the invention
In view of above problem, the utility model provides a kind of have good radiating efficiency and assembling loading and unloading screening arrangement easy, that prevent electromagnetic interference, it is too complicated to improve known electromagnetic shielding Mechanism Design thus, cause manufacturing cost to increase and damage easily, and shielding mechanism envelopes electronic building brick fully, and causes problems such as integral heat sink efficient is not good.
The screening arrangement that prevents electromagnetic interference that the utility model is disclosed, be applied to the memory module of electronic installation, electronic installation has a circuit board, on circuit board, be provided with a slot that supplies memory module electrically to plug, and have a plurality of pins that are electrically connected at circuit board in the slot, memory module electrically connects with circuit board by described pin.
Screening arrangement of the present utility model includes a plurality of protective barriers, is arranged at the limit, two opposite sides of memory module and the pin position of slot with a spacing, to cover from memory module and electromagnetic wave signal that pin was sent.And described protective barrier also electrically contacts with at least one earth point, so that electromagnetic wave signal is imported earth point, and forms ground connection.
Useful technique effect of the present utility model is, screening arrangement is arranged at the correspondence position that memory module is sent high radiated electromagnetic wave signal, effectively to block the electromagnetic wave signal that sends from memory module, and simultaneously electromagnetic wave signal is imported earth point, significantly reduced the electromagnetic interference phenomenon of electronic installation.
In addition, screening arrangement of the present utility model is not covered in memory module and slot fully, makes heat energy that memory module produced to loose fast and removes, and possess effect of the electromagnetic interference of preventing and good radiating efficiency simultaneously.
Screening arrangement is made up of a plurality of protective barrier, and is easy to manufacture, and modularization production in a large number, and and electronic installation between loading and unloading actions easy.Screening arrangement independently be installed in memory module around, circuit board must not cooperate screening arrangement, and changes the position of its wiring.
Above about the utility model content explanation and the explanation of following execution mode in order to demonstration with explain principle of the present utility model, and provide patent claim of the present utility model further to explain.
Description of drawings
Fig. 1 is the schematic perspective view of screening arrangement of the present utility model;
Fig. 2 A is the decomposing schematic representation that screening arrangement cover of the present utility model is overlying on memory module;
Fig. 2 B is the upward view that screening arrangement cover of the present utility model is overlying on memory module;
Fig. 2 C is the generalized section that screening arrangement cover of the present utility model is overlying on memory module; And
Fig. 3 is the test data graph of a relation of frequency and electromagnetic intensity.
Wherein, description of reference numerals is as follows:
100 screening arrangements, 110 first protective barriers
120 second protective barriers, 121 first grounding parts
122 locked assemblies 130 the 3rd protective barrier
131 second grounding parts 140 the 4th protective barrier
Continuous 200 electronic installations of 150 conduction bubbles
201 housings, 210 memory modules
220 circuit boards, 221 fixing holes
230 slots, 231 pins
232 earthing members
Embodiment
The screening arrangement disclosed according to the utility model, in order to prevent the electromagnetic interference that memory module produced in the electronic installation, wherein said electronic installation comprises personal computer (personal computer), notebook computer (notebook computer), flat computer computer installations such as (tablet PC), but not as limit.Following to detailed description of the present utility model in, will be with notebook computer as most preferred embodiment of the present utility model.Yet accompanying drawing only provides reference and explanation usefulness, is not in order to restriction the utility model.
As Fig. 1, Fig. 2 A, and Fig. 2 B shown in, the screening arrangement that prevents electromagnetic interference 100 that the utility model is disclosed is applied to the memory module 210 of electronic installation 200, this electronic installation 200 has a housing 201, be equiped with a circuit board 220 in the housing 201, circuit board 220 is provided with a slot 230 that supplies memory module 210 electrically to plug, and slot 230 has a plurality of pins 231 that are electrically connected at circuit board 220, and memory module 210 electrically connects with circuit board 220 by these pins 231.
Wherein, first protective barrier 110 is parallel to each other with circuit board 220, and the length of first protective barrier 110 is greater than the size of about 230 two sides of slot, and the width of first protective barrier 110 is less than the size of both sides, slot 230 front and back.Second protective barrier, 120 perpendicular abutment are in a side of first protective barrier 110, and second protective barrier 120 is higher than the height of slot 230.The 3rd protective barrier 130 and the 4th protective barrier 140 plug the direction setting along memory module 210, and are adjacent to respectively on two relative sides of first protective barrier 110.
Be extended with first grounding parts 121 that is parallel to first protective barrier 110 in second protective barrier, 120 1 sides, and the 3rd protective barrier 130 and the 4th protective barrier 140 also are extended with one second grounding parts 131 along the direction that plugs of memory module 210 respectively from the adjoiner of first protective barrier 110, so that the entire length of the 3rd protective barrier 130 and the 4th protective barrier 140 is greater than the width of first protective barrier 110.
Please continue to consult Fig. 1 to Fig. 2 B.First protective barrier 110 of screening arrangement 100 and second protective barrier 120 are arranged at pin 231 positions of slot 230, and and slot 230 between keep a constant spacing, to block the electromagnetic wave signal that is sent by pin 231; The 3rd protective barrier 130 and the 4th protective barrier 140 are arranged at the limit, two opposite sides of memory module 210, and shelter from the limit, two opposite sides of memory module 210 fully, keep a constant spacing between the 3rd and the 4th protective barrier 130,140 and the memory module 210, to block the electromagnetic wave signal that sends by memory module 210.Each protective barrier 110,120,130,140 of screening arrangement 100 has destroyed original memory module 210 electromagnetic width of cloth that sends and has penetrated kenel.
Because first protective barrier 110 only shelters from pin 231 parts of slot 230, be not covered in memory module 210 and slot 230 tops fully, the heat energy that memory module 210 is produced in running, can loose fast and remove in the space in housing, so that memory module 210 continues to remain on stable working temperature, and do not cause the bulk temperature of electronic installation 200 to raise.
See also Fig. 2 A and Fig. 2 B, screening arrangement 100 of the present utility model more can be by electrically contacting with a plurality of earth points except blocking electromagnetic wave signal, so that electromagnetic wave signal is imported earth point, and forms a complete grounded circuit.
Shown in Fig. 2 A and Fig. 2 B, the upper side of first protective barrier 110 is connected with a conducting foam 150, and conducting foam 150 is resisted against on the housing 201, first protective barrier 110 electrically contacts with housing 201 by this conducting foam 150, the electromagnetic wave signal that is blocked is imported housing 201, to reduce the electromagnetic interference that electromagnetic wave is caused electronic installation 200.Wherein, the housing of this electronic installation is earth point.
Shown in Fig. 2 A and Fig. 2 B, first grounding parts 121 of second protective barrier 120 fits in circuit board 220 1 sides, and offer at least one fixing hole 221 (shown in the figure one) on the circuit board 220, the fixing hole of offering on this circuit board is earth point, first grounding parts 121 electrically contacts with fixing hole 221 by a locked assembly 122, imports circuit board 220 with the electromagnetic wave signal that will be blocked.Locked assembly 122 of the present utility model is a bolt, yet assembling demand according to reality, can adopt fixture as metal materials such as latch, rivets, with and circuit board 220 between form ground connection, and the quantity of fixing hole 221 and locked assembly 122 can be single or a plurality of collocation, does not exceed with present embodiment.
Shown in Fig. 2 A and Fig. 2 B, on two relative sides of slot 230, be respectively equipped with two earthing members 232 that are connected in circuit board 220, two earthing members are earth point, and the 3rd protective barrier 130 electrically contacts with two earthing members 232 respectively with second grounding parts 131 of the 4th protective barrier 140, import circuit board 220 with the electromagnetic wave signal that each protective barrier 110,120,130,140 is blocked, to reduce the electromagnetic interference that electromagnetic wave signal was caused.
Figure 3 shows that and use screening arrangement of the present utility model and do not use the frequency of screening arrangement and the test data graph of a relation of electromagnetic intensity.Shown in the figure is the measured real data line segment of electronic installation that uses the utility model screening arrangement than bold curve 1, and thin curve 2 is not then for using the measured data line segment of electronic installation of screening arrangement.Under two line segments are compared, use the electromagnetic intensity that electronic installation leaked of the utility model screening arrangement to be lower than the electronic installation that does not use screening arrangement, and the category-B standard criterion that meets the international radio frequency interference committee (CISPR), particularly at high frequency treatment, also and do not use between the electronic installation of screening arrangement and have tangible strength difference.Therefore, use the electronic installation of screening arrangement of the present utility model to possess the good electromagnetic interference effect that prevents.
Screening arrangement that the utility model is disclosed and the action of the loading and unloading between the electronic installation are simple, and can block at the high radiated electromagnetic wave signal that memory module is sent, and simultaneously electromagnetic wave signal are imported earth point, can effectively reduce electromagnetic interference.Because screening arrangement is not covered in above memory module and the slot fully, the heat energy that causes memory module to produce can loose fast and remove, and has good electromagnetic interference effect and the radiating efficiency of preventing simultaneously concurrently.
In addition, screening arrangement is made by light metal material, and its weight is slim and graceful, and is easy to manufacture, and modularization production, and circuit board in a large number must not cooperate the installation position of screening arrangement, and changes wiring originally.
Though embodiment of the present utility model is illustrated as mentioned above; so be not in order to limit the utility model; those skilled in the art is not in breaking away from spirit and scope of the present utility model; therefore can do numerous variations according to the described shape of the utility model application range, structure, feature and spirit, scope of patent protection of the present utility model must be looked the scope that this specification appending claims defined and is as the criterion.
Claims (5)
1. screening arrangement that prevents electromagnetic interference, it is applied to a memory module of electronic installation, this electronic installation has a circuit board, this circuit board is provided with a slot that supplies this memory module electrically to plug, this slot has a plurality of pins that are electrically connected at this circuit board, this memory module electrically connects by described pin and this circuit board, it is characterized in that, this screening arrangement includes a plurality of protective barriers, described protective barrier is arranged at the limit, two opposite sides of this memory module and the position of described pin with a spacing, block the electromagnetic wave signal that sends from this memory module and described pin, and described protective barrier electrically contacts with at least one earth point, this electromagnetic wave signal is imported described earth point form ground connection.
2. the screening arrangement that prevents electromagnetic interference as claimed in claim 1, it is characterized in that, this screening arrangement has one first protective barrier, is adjacent to one second protective barrier of this first protective barrier, one the 3rd protective barrier and four protective barrier relative with the 3rd protective barrier, this first protective barrier and this second protective barrier are in order to block the electromagnetic wave signal that described pin sends, the 3rd protective barrier and the 4th protective barrier be in order to blocking the electromagnetic wave signal that this memory module is sent, and respectively this electromagnetic wave signal is directed into described earth point.
3. the screening arrangement that prevents electromagnetic interference as claimed in claim 2, it is characterized in that it is continuous that a side of this first protective barrier is connected with a conduction bubble, and described earth point is the housing of this electronic installation, described protective barrier electrically contacts with this housing by this conduction bubble silk floss, to form ground connection.
4. the screening arrangement that prevents electromagnetic interference as claimed in claim 2, it is characterized in that, side at this second protective barrier also is extended with one first grounding parts, and has at least one locked assembly, at least one fixing hole of described earth point for offering on this circuit board, described protective barrier electrically contacts with this fixing hole by this locked assembly, to form ground connection.
5. the screening arrangement that prevents electromagnetic interference as claimed in claim 2, it is characterized in that, the 3rd protective barrier and the 4th protective barrier are extended with one second grounding parts respectively from the adjoiner of this first protective barrier, it blocks the limit, two opposite sides of this memory module, and this earth point is two earthing members of this slot, described protective barrier electrically contacts with described two earthing members by this second grounding parts, to form ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201556797U CN201115279Y (en) | 2007-08-02 | 2007-08-02 | Electromagnetic interference prevention shielding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201556797U CN201115279Y (en) | 2007-08-02 | 2007-08-02 | Electromagnetic interference prevention shielding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201115279Y true CN201115279Y (en) | 2008-09-10 |
Family
ID=39967032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201556797U Expired - Lifetime CN201115279Y (en) | 2007-08-02 | 2007-08-02 | Electromagnetic interference prevention shielding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201115279Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108738289A (en) * | 2017-04-20 | 2018-11-02 | 仁宝电脑工业股份有限公司 | Radio frequency interference preventing electronic assembly |
-
2007
- 2007-08-02 CN CNU2007201556797U patent/CN201115279Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108738289A (en) * | 2017-04-20 | 2018-11-02 | 仁宝电脑工业股份有限公司 | Radio frequency interference preventing electronic assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080910 |