CN1359042A - Computer system and structure for preventing electromagnetic wave interference - Google Patents
Computer system and structure for preventing electromagnetic wave interference Download PDFInfo
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- CN1359042A CN1359042A CN00135999A CN00135999A CN1359042A CN 1359042 A CN1359042 A CN 1359042A CN 00135999 A CN00135999 A CN 00135999A CN 00135999 A CN00135999 A CN 00135999A CN 1359042 A CN1359042 A CN 1359042A
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- motherboard
- computer system
- metal sheet
- electromagnetic wave
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Abstract
The present invention relates to a computer system and its structure for resisting electromagnetic wave interference, including a metal outer shell, a host board and several shielding sheets, in which two sides of internal side of metal outer shell at least include a pair of parallel guide grooves for receiving host board. Two parallel sides of the host board are plated with a grounding layer respectively. Said grounding layer also includes several through holes, so that the shielding metal sheets can be held on the grounding layers, and can be formed into several spring strips and elastic fasteners, and these fasteners can be fastened on the through holes, and when the host board is slided into guide grooves, said spring strips can be tightly contacted with said guide grooves.
Description
The present invention relates to a kind of computer system and structure for preventing electromagnetic wave interference thereof, particularly relate to and a kind ofly utilize a plurality of shielded metal sheets to be fastened on the side of computer system motherboard, and reach the structure that prevents Electromagnetic Interference by the design and the parallel dual-side plating of the motherboard ground plane of guide groove in the metal shell.
Many on the market electronic products, for example: information products such as PC or device for logging on network, coat the computer system motherboard with a metal shell usually, its purpose is except that the inner electronic component of protection, also in order to reduce the electromagnetic wave that electronic component produced.Confirm that now electronic product produced strong electromagnetic wave the people is known from experience the great injury of generation, especially for the electronic component of high workload frequency, electromagnetic situation is serious especially.Therefore, existing many countries all need pass through by certain safety standard test for every electronic product, could use.
In existing technology, motherboard mostly locks on the metal chassis inboard by screw in the metal shell, thus to reduce the potential difference (PD) of motherboard earthing potential and metal shell current potential, thereby reduce the excessive electromagnetic wave that discharges of potential difference (PD) because of motherboard earthing potential and metal shell current potential, in addition, and by the contacting of motherboard and metal shell, enlarge the electromagnetic wave conduction surface, the energy of concentrating in order to the decay electromagnetic wave.
Fig. 1 shows computer system main frame in the prior art, and it is for the relation of clear performance motherboard and metal shell, so the loam cake of metal shell is removed.Computer system main frame 10 has a motherboard 11 and coats the metal shell 13 of motherboard 11.The a plurality of perforations 15 that form on the motherboard 11 can be locked in motherboard 11 on the one side of betal can 13 screw 12.Screw is welded with one deck tin for 12 times and electrically contacts with the ground plane 14 that is formed on the motherboard 11, therefore, by reducing the potential difference (PD) of motherboard earthing potential and metal shell current potential, and reduction is because of the excessive electromagnetic wave that discharges of potential difference (PD) of motherboard earthing potential and metal shell current potential, and contacting by motherboard and metal shell, enlarge the electromagnetic wave conduction surface, the energy of concentrating in order to the decay electromagnetic wave.
This case is in the above-mentioned prior art, and this motherboard need adopt a plurality of screws to lock, and screw must cause the quite problem of trouble of its assembling with motherboard and metal shell fluid-tight engagement.In addition, cause motherboard and metal shell space to increase, make the easier situation that penetrates thereby cause electromagnetic wave to leak of electromagnetic wave more serious owing to motherboard is only locked by a plurality of screws.
The object of the present invention is to provide a kind of computer system and structure for preventing electromagnetic wave interference thereof, to address the above problem.
The object of the present invention is achieved like this, and a kind of computer system and structure for preventing electromagnetic wave interference thereof promptly are provided, and comprising: a metal shell, in order to coat this computer system and its at least one inboard has a guide groove; The thickness that one motherboard, this motherboard periphery form a ground plane and this motherboard is suitable with the interval of aforementioned guide groove approximately, thus this motherboard is fixed in the aforementioned guide groove; An and shielded metal sheet, this shielded metal sheet comprises at least by a pair of parallel metal plate and the metal side plate of slightly being and is connected to form a rectangular parallelepiped with opening, this shielded metal sheet can be clamped on the ground plane of this motherboard, wherein on one of this metal plate or metal side plate, establish at least one shell fragment towards this guide groove direction is prominent.
The present invention also provides a kind of shielded metal sheet, be embedded at the Electromagnetic Interference that is used to prevent an electronic installation on the motherboard, at least comprise: a pair of parallel metal plate and the metal side plate of slightly being is connected to form a rectangular parallelepiped with opening, wherein establishes at least one shell fragment and inwardly forms an elasticity snap towards this opening to evagination towards this opening on one of this metal plate or metal side plate.
Furtherly, computer system of the present invention comprises: a metal shell, a motherboard and a plurality of shielded metal sheet.This metal shell, a pair of slightly be parallel guide groove in order to accommodate this motherboard two inboard relatively comprising at least, and this motherboard is directly embedded in this guide groove and is simplified being assembled of motherboard and metal shell thus.In addition, for reducing the potential difference (PD) of motherboard earthing potential and metal shell current potential, can reduce the excessive electromagnetic wave that discharges of potential difference (PD) because of motherboard earthing potential and metal shell current potential, the parallel dual-side of this motherboard all is coated with a ground plane, and by being sandwiched in the shell fragment on the shielded metal sheet on this ground plane, its motherboard is closely contacted by the shielded metal sheet with metal shell, thereby reduce the potential difference (PD) of motherboard earthing potential and metal shell current potential, promptly reduce because of the excessive electromagnetic wave that discharges of potential difference (PD).
Below in conjunction with accompanying drawing, describe embodiments of the invention in detail, wherein:
Fig. 1 is that the motherboard of computer system in the prior art engages stereographic map with metal shell, and the loam cake of wherein removing metal shell is with show internal structure;
Fig. 2 is motherboard, shielded metal sheet and the metal shell exploded perspective view of computer system among the present invention, wherein removes the part metals shell to show inner structure;
Fig. 3 a-Fig. 3 c is the details drawing of shielded metal sheet among Fig. 2, and wherein, Fig. 3 a is that front perspective view, Fig. 3 b are that rear perspective view and Fig. 3 c are side view cutaway drawing.
Fig. 2 is motherboard, shielded metal sheet and the metal shell exploded perspective view of the computer system of computer system of the present invention.Computer system of the present invention can be information products such as a kind of PC or device for logging on network.As shown in Figure 2, computer system comprises at least: the shielded metal sheet 23 of a motherboard 22, a plurality of embedding motherboard 22 peripheries reaches in order to coat the metal shell 20 of motherboard 22.Metal shell 20 is to be formed by the metal plate punching press slightly to be rectangular parallelepiped and respectively to form a guide groove 21 in two relative metal plate inboards.Guide groove 21 is that fin 211 and its interval of pair of parallel is suitable with the thickness of motherboard 22, embeds the fixing assembling mode of simplifying thus in order to motherboard 22 to be provided.And for strengthening the fluid-tight engagement of 21 of motherboard 22 and guide grooves.Before motherboard 22 inserted guide groove 21, the present invention installed a plurality of rubber-like shielded metal sheets 23 earlier in motherboard 22 both side edges.Because the thickness of shielded metal sheet 23 is slightly larger than the interval of fin 211, so when motherboard 22 inserted guide groove 21 together with shielded metal sheet 23, shielded metal sheet 23 produced interference engagement and motherboard 22 firmly is installed in the metal shell 20 with fin 211.
With reference to figure 2, further specify the structure of motherboard 22 again, motherboard 22 is by having an a plurality of electronic components and connector formation printed circuit board (PCB) thereon, and to reach specific function, this part is a prior art, so no longer describe in detail in this article.It should be noted that motherboard 22 both sides peripheries form tin coatings, with as ground plane 221.Ground plane 221 can electrically contact with shielded metal sheet 23 so that the earthing potential of motherboard 22 equates with the current potential of metal shell 20.Simultaneously, on ground plane 221 positions, also form a plurality of through holes 222 in order to fixed mask sheet metal 23.
Referring to Fig. 3 a-Fig. 3 c, the detailed structure of its explanation shielded metal sheet 23, wherein Fig. 3 a is that front perspective view, Fig. 3 b are that rear perspective view and Fig. 3 c are side view cutaway drawing.Shielded metal sheet 23 is to be connected to form one and to be had the rectangular parallelepiped of opening by a pair of parallel metal plate 230 and the metal side plate 231 of slightly being, and can be the preferable materials of electric conductivity such as copper or aluminium, and it is through stamped and one-body molded.Each metal plate 230 or metal side plate 231 all can comprise a plurality of shell fragments 232, and in the present embodiment, on the metal plate 230 that 233 of elasticity snaps one of only are formed on.Shell fragment 232 and elasticity snap 233 directly are stamped to form on shielded metal sheet 23.As shown in the figure, shell fragment 232 and elasticity snap 233 can come out by the shape impact extrusion of mould own in the mill, therefore need not pass through secondary processing, so can reduce manufacturing cost.Further with reference to figure 3c, shell fragment 232 is outstanding towards the outside of metal plate 230 or metal side plate 231, and makes the width of shielded metal sheet 23 be slightly larger than the spacing distance of guide groove 21.On the contrary, 233 inboards towards metal plate 230 of elasticity snap are recessed, with this elasticity snap 233 of shielded metal sheet 23 can be embedded in the through hole 222 of motherboard 22.
When motherboard 22 was installed, the ground plane 221 of at first shielded metal sheet 23 openings being aimed at motherboard 22 edges pushed.Shown in Fig. 3 c, the formation barb so elasticity snap 233 can embed in the through hole 222 of motherboard 22, is fixed on shielded metal sheet 23 on the motherboard 22 with this because elasticity snap 233 is towards the inboard of metal plate 230 is recessed.When shielded metal sheet 23 is installed in motherboard 22 edges and inserts guide groove 21, the elasticity snap 233 of shielded metal sheet 23 embeds in the through holes 222 and is fixed on the motherboard 22, and the shell fragment 232 of shielded metal sheet 23 is subjected to guide groove 21 compression sets and motherboard 22 is remained in the guide groove 21.So the present invention can guarantee shielded metal sheet 23 not can because of motherboard 22 rock leakage and the contacting of guide groove 21, thereby finish the purpose of fixed host computer plate 22, effectively reach combining closely of motherboard 22 and metal shell 20 simultaneously.In addition, according to foregoing invention, its can be directly with shielded metal sheet 23 direct padlocks on motherboard 22 both sides, afterwards, again motherboard 22 is directly slipped in the guide groove 21 of metal shell 20, promptly finish the assembling of motherboard and metal shell and meet the interference of anti electromagnetic wave, effectively simplify the assembling of the motherboard and the metal shell of prior art.
In sum, though disclosed the present invention in conjunction with an above preferred embodiment, yet it is not in order to limit the present invention, those skilled in the art without departing from the spirit and scope of the present invention, can be used for a variety of modifications and variations, for example: metal plate 230 or guide groove that elasticity snap 233 also can be formed on the bottom side can be formed on adjacent metal shell inboard.Therefore protection scope of the present invention should be with being as the criterion that claim was defined.
Claims (10)
1. computer system and structure for preventing electromagnetic wave interference thereof comprise:
One metal shell is in order to coat this computer system and its at least one inboard has a guide groove;
The thickness that one motherboard, this motherboard periphery form a ground plane and this motherboard is suitable with the interval of aforementioned guide groove approximately, thus this motherboard is fixed in the aforementioned guide groove; And
One shielded metal sheet, this shielded metal sheet comprises at least by a pair of parallel metal plate and the metal side plate of slightly being and is connected to form a rectangular parallelepiped with opening, this shielded metal sheet can be clamped on the ground plane of this motherboard, wherein on one of this metal plate or metal side plate, establish at least one shell fragment towards this guide groove direction is prominent.
2. a kind of computer system as claimed in claim 1 and structure for preventing electromagnetic wave interference thereof, wherein this shielded metal sheet can be a copper sheet and forms through stamped.
3. a kind of computer system as claimed in claim 1 and structure for preventing electromagnetic wave interference thereof, wherein this ground plane is made by directly plating one deck tin on this motherboard.
4. a kind of computer system as claimed in claim 1 and structure for preventing electromagnetic wave interference thereof, wherein this shell fragment is through stamped and integrally formed with this shielded metal sheet.
5. a kind of computer system as claimed in claim 1 and structure for preventing electromagnetic wave interference thereof, wherein the ground plane at this motherboard also forms a plurality of through holes.
6. a kind of computer system as claimed in claim 5 and structure for preventing electromagnetic wave interference thereof, wherein this shielded metal sheet also forms a plurality of elasticity snaps on the plane with respect to the through hole of this motherboard, and its direction is towards this through hole.
7. a kind of computer system as claimed in claim 1 and structure for preventing electromagnetic wave interference thereof, wherein this elasticity snap is through stamped and integrally formed with this shielded metal sheet.
8. shielded metal sheet, be embedded at the Electromagnetic Interference that is used to prevent an electronic installation on the motherboard, at least comprise: a pair of parallel metal plate and the metal side plate of slightly being is connected to form a rectangular parallelepiped with opening, wherein establishes at least one shell fragment and inwardly forms an elasticity snap towards this opening to evagination towards this opening on one of this metal plate or metal side plate.
9. a kind of shielded metal sheet as claimed in claim 8, wherein this shell fragment and this elasticity snap are through stamped and integrally formed with this shielded metal sheet.
10. a kind of shielded metal sheet as claimed in claim 8, wherein this motherboard periphery forms a ground plane, and has a plurality of through holes, and it is in order to be electrically connected with aforementioned elasticity snap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001359991A CN1176412C (en) | 2000-12-20 | 2000-12-20 | Computer system and structure for preventing electromagnetic wave interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001359991A CN1176412C (en) | 2000-12-20 | 2000-12-20 | Computer system and structure for preventing electromagnetic wave interference |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1359042A true CN1359042A (en) | 2002-07-17 |
| CN1176412C CN1176412C (en) | 2004-11-17 |
Family
ID=4597008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001359991A Expired - Fee Related CN1176412C (en) | 2000-12-20 | 2000-12-20 | Computer system and structure for preventing electromagnetic wave interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1176412C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003100587A1 (en) * | 2002-05-27 | 2003-12-04 | Song Wang | Thickened shell of heat source |
| CN102458067A (en) * | 2010-10-29 | 2012-05-16 | 宏达国际电子股份有限公司 | Hand-held electronic device |
| TWI581693B (en) * | 2010-07-29 | 2017-05-01 | 富智康（香港）有限公司 | Sliding mechanism and electronic device using the same |
-
2000
- 2000-12-20 CN CNB001359991A patent/CN1176412C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003100587A1 (en) * | 2002-05-27 | 2003-12-04 | Song Wang | Thickened shell of heat source |
| TWI581693B (en) * | 2010-07-29 | 2017-05-01 | 富智康（香港）有限公司 | Sliding mechanism and electronic device using the same |
| CN102458067A (en) * | 2010-10-29 | 2012-05-16 | 宏达国际电子股份有限公司 | Hand-held electronic device |
| CN102458067B (en) * | 2010-10-29 | 2015-09-09 | 宏达国际电子股份有限公司 | Hand-hold electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1176412C (en) | 2004-11-17 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| 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: 20041117 Termination date: 20191220 |