CN101923372B - Host - Google Patents
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- Publication number
- CN101923372B CN101923372B CN 200910303195 CN200910303195A CN101923372B CN 101923372 B CN101923372 B CN 101923372B CN 200910303195 CN200910303195 CN 200910303195 CN 200910303195 A CN200910303195 A CN 200910303195A CN 101923372 B CN101923372 B CN 101923372B
- Authority
- CN
- China
- Prior art keywords
- network interface
- circuit board
- printed circuit
- pcb
- main frame
- 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
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The invention discloses a host. The host comprises a printed circuit board and a shell, wherein the printed circuit board is provided with a network interface; a metal surface at the bottom of the network interface is partially exposed out of the edge of the printed circuit board; the shell is provided with an opening; one side of the opening is provided with a conducting strip; and the network interface is connected with the conducting strip. Electrostatic current on the network interface of the host of the invention can be transferred to the shell for grounding through the conducting strip,so that the interference of electrostatic discharge on the network interface is eliminated.
Description
Technical field
The present invention relates to a kind of main frame, particularly a kind of static discharge that prevents produces the main frame that disturbs to network interface.
Background technology
(Electrostatic Discharge ESD) can produce serious destruction to the semiconductor element in the integrated circuit to static discharge, and it can't be worked.This is that this electric current can surpass the scope that semiconductor element can be loaded usually, and total system is caused damage because ESD can produce a large amount of electric currents in the extremely short time.
In order to prevent that the lattice network of ESD from causing interference, generally speaking, can EMI(Electro Magnetic Interference be set at the network interface of main frame) shell fragment, the EMI shell fragment of network interface is done with the metal covering of casing be connected then.When network interface was subjected to the ESD interference, the ESD electric current can conduct on the casing via the EMI shell fragment of network interface, and can not make the ESD electric current enter lattice network.
Yet based on cost consideration, present most of network interfaces all do not design the EMI shell fragment, will cause main frame that the problem of radiation and static discharge is arranged for the network interface that does not design the EMI shell fragment.
Summary of the invention
In view of above content, be necessary to provide a kind of static discharge that prevents that the network interface that does not design the EMI shell fragment is produced the main frame that disturbs.
A kind of main frame comprises:
One printed circuit board (PCB) arranges a network interface on the described printed circuit board (PCB), described network interface bottom is metal covering; And
One casing, one opening that described network interface is passed is set on the described casing, side at described opening arranges a conducting strip, the metal covering of described network interface bottom have part to expose the edge of described printed circuit board (PCB), the length of metal covering of exposing the marginal portion of described printed circuit board (PCB) is at least 3mm, and described conducting strip contacts with the metal covering of the marginal portion of exposing described printed circuit board (PCB).
Main frame of the present invention is by arranging described conducting strip at described shell opening place, and described conducting strip exposes fully described printed circuit board (PCB) bottom described network interface metal covering contacted, make the electrostatic induced current on the described network interface to conduct to described chassics earth by described conducting strip, thereby eliminate static discharge to the interference of described network interface.
Description of drawings
Fig. 1 is the synoptic diagram of the preferred embodiments of main frame of the present invention.
Fig. 2 is the synoptic diagram of preferred embodiments of the printed circuit board (PCB) of main frame of the present invention inside.
Fig. 3 is the upward view of the printed circuit board (PCB) among Fig. 2.
Fig. 4 is the synoptic diagram of preferred embodiments of the corresponding opening of network interface of main frame of the present invention.
Fig. 5 is the synoptic diagram that the printed circuit board (PCB) of main frame of the present invention inside is connected with described opening.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiments the present invention is described in further detail:
Please refer to Fig. 1-4, the preferred embodiments of main frame 100 of the present invention comprises a printed circuit board (PCB) 10 and a casing 20.One network interface 11 and a breach 12 are set on the described printed circuit board (PCB) 10.Wherein, described breach 12 is arranged at the edge of described printed circuit board (PCB) 10, and its area is less than the area of the metal covering of described network interface 11 bottoms.Described network interface 11 is installed on breach 12 places of described printed circuit board (PCB) 10, and the length that the metal covering of the bottom of described network interface 11 exposes the marginal portion of described printed circuit board (PCB) 10 is at least 3mm, thereby makes the metal covering of bottom of described network interface 11 all not contact with described printed circuit board (PCB) 10.In this preferred embodiments, the width of described breach 12 is 5mm, and length is 5mm.
Described printed circuit board (PCB) 10 can be a mainboard, and it is arranged at the inside of described casing 20.One opening 21 and an iron plate 22 are set on the described casing 20.Described network interface 11 passes described opening 21 and links to each other with the network in the external world with convenient.Described iron plate 22 is arranged on a side of described opening 21, and with 21 one-tenth 90 of described openings degree, it can be shaped by punch die when making described casing 20.In the present embodiment, described iron plate 22 is arranged on the lower edge of described opening 21, and the width of described iron plate 22 is 5mm, and length is 5mm.In other embodiments, described iron plate 22 also can be other conducting strip, as other sheet metals outside the deironing.
Please continue with reference to figure 5, during actual the use, described printed circuit board (PCB) 10 is installed in the described casing 20, and described iron plate 22 placed breach 12 places of described printed circuit board (PCB) 10, so that described iron plate 22 contacts with the metal covering that described printed circuit board (PCB) 10 is exposed in described network interface 11 bottoms fully.In other embodiments, when the length of described iron plate 22 is less than or equal to described network interface 11 bottoms and exposes the length of printed circuit board (PCB) 100, described breach 12 also can be omitted, because this moment, described iron plate 22 can be fully contacts with metal covering that described printed circuit board (PCB) 10 is exposed in the bottom of described network interface 11.
The compactedness that contacts of exposing metal covering with the described iron plate 22 of described printed circuit board (PCB) 10 for the bottom that increases described network interface 11 can be pasted conducting foam or other conductive materials at described iron plate 22.At this moment, the electrostatic induced current on the described network interface 11 can conduct to described casing 200 ground connection by conducting foam and iron plate 22, thereby eliminates static discharge to the interference of described network interface 11.
Claims (7)
1. main frame comprises:
One printed circuit board (PCB) arranges a network interface on the described printed circuit board (PCB), described network interface bottom is metal covering; And
One casing, one opening that described network interface is passed is set on the described casing, side at described opening arranges a conducting strip, the metal covering of described network interface bottom has part to expose the edge of described printed circuit board (PCB), the length of metal covering of exposing the marginal portion of described printed circuit board (PCB) is at least 3mm, and described conducting strip contacts with the metal covering of the marginal portion of exposing described printed circuit board (PCB).
2. main frame as claimed in claim 1, it is characterized in that: described conducting strip is a sheet metal.
3. main frame as claimed in claim 2, it is characterized in that: described sheet metal is an iron plate.
4. main frame as claimed in claim 1, it is characterized in that: the width of described conducting strip is 5mm, length is 5mm.
5. main frame as claimed in claim 1, it is characterized in that: the edge of described printed circuit board (PCB) also is provided with a breach, and described breach is arranged on described network interface below, and the metal covering of described network interface bottom has part to expose from described breach.
6. main frame as claimed in claim 5, it is characterized in that: the width of described breach is 5mm, length is 5mm.
7. main frame as claimed in claim 1 is characterized in that: be pasted with conducting foam on the described conducting strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910303195 CN101923372B (en) | 2009-06-12 | 2009-06-12 | Host |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910303195 CN101923372B (en) | 2009-06-12 | 2009-06-12 | Host |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101923372A CN101923372A (en) | 2010-12-22 |
| CN101923372B true CN101923372B (en) | 2013-10-09 |
Family
ID=43338352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910303195 Expired - Fee Related CN101923372B (en) | 2009-06-12 | 2009-06-12 | Host |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101923372B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109068559A (en) * | 2018-10-17 | 2018-12-21 | 南京沃福曼医疗科技有限公司 | A method of reducing the radiation of OCT equipment DVI video interface |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2760649Y (en) * | 2004-10-14 | 2006-02-22 | 上海环达计算机科技有限公司 | Input/output panel structure |
| CN2938728Y (en) * | 2006-07-28 | 2007-08-22 | 佛山市顺德区顺达电脑厂有限公司 | Device for preventing electromagnetic interference |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11129697A (en) * | 1997-10-27 | 1999-05-18 | Kokuyo Co Ltd | Static electricity preventive utensil, and shelves equipped with the same |
-
2009
- 2009-06-12 CN CN 200910303195 patent/CN101923372B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2760649Y (en) * | 2004-10-14 | 2006-02-22 | 上海环达计算机科技有限公司 | Input/output panel structure |
| CN2938728Y (en) * | 2006-07-28 | 2007-08-22 | 佛山市顺德区顺达电脑厂有限公司 | Device for preventing electromagnetic interference |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101923372A (en) | 2010-12-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20131009 Termination date: 20140612 |
|
| EXPY | Termination of patent right or utility model |