CN105704912A - Electrostatic protection method and system of single printed circuit board (PCB) - Google Patents
Electrostatic protection method and system of single printed circuit board (PCB) Download PDFInfo
- Publication number
- CN105704912A CN105704912A CN201610221357.1A CN201610221357A CN105704912A CN 105704912 A CN105704912 A CN 105704912A CN 201610221357 A CN201610221357 A CN 201610221357A CN 105704912 A CN105704912 A CN 105704912A
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- China
- Prior art keywords
- protection interval
- single board
- pcb single
- static electricity
- protection
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0254—High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection ; Arrangements for regulating voltages or for using plural voltages
- H05K1/0257—Overvoltage protection
- H05K1/0259—Electrostatic discharge [ESD] protection
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/07—Electric details
- H05K2201/0776—Resistance and impedance
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Elimination Of Static Electricity (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
The invention discloses an electrostatic protection method and system of a single printed circuit board (PCB). The method comprises the following steps of S1, arranging a first electrostatic protection layer, a second electrostatic protection layer and a third electrostatic protection layer which are sequentially connected on the single PCB; S2, installing a panel on the single PCB, and enabling the panel to be in contact with the second electrostatic protection layer; S3, dividing the first electrostatic protection layer into a first protection layer segment and a second protection layer segment which are arranged at intervals, and dividing the third electrostatic protection layer into a third protection layer segment and a fourth protection layer segment which are arranged at intervals, wherein the first protection layer segment and the second protection layer segment are connected by a first resistor, and the third protection layer segment and the fourth protection layer segment are connected by a second resistor; and S4, contacting the panel with a human body, and inserting the single PCB into a grounded device machine frame. By the method, the electrostatic release current of the human body is reduced, and the discomfort during electrostatic release from the human body is reduced.
Description
Technical field
The present invention relates to electrostatic defending technical field, particularly relate to a kind of PCB single board electrostatic protection method and system。
Background technology
In prior art, the side of PCB single board generally has continuous print first to the 3rd section of electrostatic defending article 1 ＇-3 ＇, then PCB single board is inserted in the machine frame of communication equipment and uses, consult shown in Fig. 1, insert in the process of machine frame 5 ＇ at PCB single board 4 ＇, second first contacts with machine frame 5 ＇ with the 3rd electrostatic defending article 2 ＇-3 ＇, because first to the 3rd section of electrostatic defending article 1 ＇-3 ＇ is joined directly together, between human body and the earth, resistance is very little, cause that the resistance on the electrostatic leakage path in human body is very little, when assembling PCB single board 4 ＇, electrostatic immediate leakage electric current in human body is very big, people knows from experience generation discomfort, discharge spark can be seen time serious。
Summary of the invention
It is an object of the invention to provide a kind of PCB single board electrostatic protection method and system, can reduce static electricity on human body's release current in installation process, and discomfort when reducing human body release electrostatic。
To achieve these goals, the present invention provides a kind of PCB single board electrostatic protection method, and it comprises the following steps:
S1, the first to the 3rd static electricity shield layer being sequentially connected with is set in PCB single board；
S2, in PCB single board install panel, make described panel and the second static electricity shield layer contact；
S3, described first static electricity shield layer is divided into spaced first protection interval and second protection interval, it is connected by the first resistance between described first protection interval and the second protection interval, described 3rd static electricity shield layer is divided into spaced 3rd protection interval and the 4th protection interval, is connected by the second resistance between described 3rd protection interval and the 4th protection interval；
S4, by panel described in human contact, described PCB single board is inserted in the equipment machine frame of ground connection。
According to a preferred embodiment of the invention: described equipment machine frame includes framework and conductive guide, described conductive guide is symmetricly set on the two ends up and down of described framework, in described step S4, described PCB single board is inserted into described equipment machine frame include: the one end protecting interval and the 4th protection interval by described second contacts two described conductive guides simultaneously, then slide along described conductive guide to described framework, make in the first static electricity shield layer and the 3rd fully-inserted to the described framework of electrostatic layer, and with described framework conducting contact。
According to a preferred embodiment of the invention: the mode molding that described first to the 3rd static electricity shield layer is windowed by PCB single board surface paving copper and solder mask。
The present invention also provides for a kind of PCB single board systems for providing electrostatic discharge protection, comprising:
First static electricity shield layer, the second static electricity shield layer and the 3rd static electricity shield layer；
PCB single board, three avris of described PCB single board are connected with described first to the 3rd static electricity shield layer respectively successively；
Equipment machine frame, is connected with ground by earth lead, and is used for installing described PCB single board；
Panel, is arranged in described PCB single board, and contacts with described second static electricity shield layer；
Wherein, described first static electricity shield layer includes spaced first protection interval, the second protection interval and the first resistance, it is connected by the first resistance between described first protection interval and the second protection interval, described 3rd static electricity shield layer includes spaced 3rd protection interval, the 4th protection interval and the second resistance, is connected by the second resistance between described 3rd protection interval and the 4th protection interval。
According to a preferred embodiment of the invention: also include: described PCB single board is positioned at multiple connection seats of the side of described second static electricity shield layer, described panel is connected through described connection seat and described PCB single board are fixing by bolt。
According to a preferred embodiment of the invention: the length of described first protection interval and the second protection interval is equal, the length of described 3rd protection interval and the 4th protection interval is equal。
According to a preferred embodiment of the invention: the spacing between the first protection interval and the second protection interval, the spacing between the 3rd protection interval and the 4th protection interval are 5-20mm。
According to a preferred embodiment of the invention: described first resistance and the second resistance be sized to 10Mohm, rated power is 1/4W。
According to a preferred embodiment of the invention: described equipment machine frame includes framework and conductive guide, described conductive guide is symmetricly set on the two ends up and down of described framework。
The beneficial effects of the present invention is: by the cut off first protection interval and the second protection interval are connected by the first resistance, cut off the 3rd protection interval and the 4th protection interval are connected by the second resistance, PCB single board is being inserted in the process of equipment machine frame, current limliting by the first resistance and the second resistance, effectively reduce static electricity on human body's release current, reduce discomfort during human body release electrostatic, and after PCB single board is completely inserted into equipment machine frame, include the whole isoelectric level of panel, it is ensured that the safety of system。
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings。
Fig. 1 is the structural representation of PCB single board systems for providing electrostatic discharge protection of the prior art；
Fig. 2 is the method flow diagram of the PCB single board electrostatic protection method of the present invention；
Fig. 3 is the structural representation of the PCB single board systems for providing electrostatic discharge protection of the present invention。
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, so that advantages and features of the invention can be easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention being made apparent clear and definite defining。
Consult shown in Fig. 2-3, the PCB single board electrostatic protection method of the present invention, it comprises the following steps:
S1, the first to the 3rd static electricity shield layer (2-4) being sequentially connected with is set in PCB single board 1；
S2, in PCB single board 1 install panel 5, make panel 5 contact with the second static electricity shield layer 3。The effect that panel 5 contacts with the second static electricity shield layer 3: human body is when contacting with panel 5, and the electrostatic of human body guides to the second static electricity shield layer 3 through panel 5。
S3, the first static electricity shield layer 2 is divided into spaced first protection interval 21 and the second protection interval 22, it is connected by the first resistance 23 between first protection interval 21 and the second protection interval 22,3rd static electricity shield layer 4 is divided into spaced 3rd protection interval 41 and the 4th protection interval 42, is connected by the second resistance 43 between the 3rd protection interval 41 and the 4th protection interval 42。In the embodiment of the present invention, in order to play effective metering function, reducing the electric current of static electricity on human body's release, the resistance of the first resistance 23 and the second resistance 43 should select slightly larger, is sized to 10Mohm such as: the first resistance 23 and the second resistance 43, and rated power is 1/4W。
S4, by human contact's panel 5, PCB single board 1 is inserted in the equipment machine frame 6 of ground connection。
The present invention is connected by the first resistance 23 by cut off first protection interval 21 is protected interval 22 with second, with the 4th, the cut off the 3rd protection interval 41 is protected interval 42 be connected by the second resistance 43, PCB single board 1 is being inserted in the process of equipment machine frame 6, current limliting by the first resistance 23 and the second resistance 43, effectively reduce static electricity on human body's release current, reduce discomfort during human body release electrostatic, and after PCB single board 1 is completely inserted into equipment machine frame 6, include the whole isoelectric level of panel 5, it is ensured that the safety of system。
In embodiments of the present invention, equipment machine frame 6 includes framework 61 and conductive guide 62, conductive guide 62 is symmetricly set on the two ends up and down of framework 61, conductive guide 62 can not only play guide effect, but also there is conductive effect, for the static electricity on human body in PCB single board 1 is guided to equipment machine frame 6, finally through equipment machine frame 6 earth lead by electrostatic guide to ground。Specifically, in step s 4, PCB single board 1 is inserted into equipment machine frame 6 include: protect interval 22 by second and contact conductive guide 62 with the 4th one end protecting interval 42 simultaneously, then slide along conductive guide 62 to framework 61, make the first static electricity shield layer 2 and the 3rd electrostatic layer 3 fully-inserted to framework 61, and with framework 61 conducting contact。
Specifically, the mode molding that the first to the 3rd static electricity shield layer (2-4) is windowed by PCB single board 1 surface paving copper and solder mask。It is thus possible to ensure that first to the 3rd static electricity shield layer (2-4) on PCB single board 1 surface has good electric conductivity。
Consult shown in Fig. 3, the PCB single board systems for providing electrostatic discharge protection of the present invention, comprising:
First static electricity shield layer the 2, second static electricity shield layer 3 and the 3rd static electricity shield layer 4；
PCB single board 1, three avris of PCB single board 1 are connected with the first to the 3rd static electricity shield layer (2-4) respectively successively；
Equipment machine frame 6, is connected with ground by earth lead, and is used for installing PCB single board 1；Equipment machine frame 6 includes framework 61 and conductive guide 62, and conductive guide 62 is symmetricly set on the two ends up and down of framework 61。
Panel 5, is arranged in PCB single board 1, and contacts with the second static electricity shield layer 3；
Wherein, first static electricity shield layer 2 includes spaced first protection interval 21, second and protects interval 22 and the first resistance 23, it is connected by the first resistance 23 between first protection interval 21 and the second protection interval 22,3rd static electricity shield layer 4 includes spaced 3rd protection interval the 41, the 4th and protects interval 42 and the second resistance 43, is connected by the second resistance 43 between the 3rd protection interval 41 and the 4th protection interval 42。
In the present invention, this system also includes: PCB single board 1 is positioned at multiple connection seats 7 of the side of the second static electricity shield layer 3, and by bolt, through connecting, seat 7 is fixing with PCB single board 1 to be connected panel 5。Mode with bolts, not only easy installation and removal, and be connected firmly, good reliability。Certainly, it is possible to adopt other suitable connected modes。
In one embodiment of the invention, after contacting with framework 61, improve the uniformity that first, second, third and fourth protection interval (21,22,41,42) is conducted electricity, the length of the first protection interval 21 and the second protection interval 22 is equal, and the length of the 3rd protection interval 41 and the 4th protection interval 42 is equal。Wherein, spacing between first protection interval 21 and the second protection interval 22, the spacing between the 3rd protection interval 41 and the 4th protection interval 42 are not easily excessive or too small, if excessive, reduce the electrostatic defending area of PCB single board 1, reduce electrostatic protection effect, if it is too small, then easily it is short-circuited, makes the first resistance 23 and the second resistance 43 not have metering function。It is also preferred that the left this spacing can within the scope of 5-20mm。
Below for the operation principle of the present invention, the present invention is further introduced:
The process that PCB single board 1 pushes equipment machine frame 6 is divided into two stages。
First stage: when just starting to push, second protection interval the 22, the 4th protects interval 42 and contacts with conductive guide 62, first protection interval 21 protects interval 41 with the 3rd and does not also contact with conductive guide 62, and static electricity on human body's release way is: human body, panel the 5, second static electricity shield layer 3, first protect interval 21 and the 3rd protection interval the 41, first resistance 23 and the second resistance 43, second protects interval 22 and the 4th protection interval 42, conductive guide 62, equipment machine frame 6 until ground。The electrostatic of human body is discharged into the earth by the first resistance 23 and the second resistance 43, reduces Electro-static Driven Comb electric current, not only ensure that the safety of equipment, and reduce the discomfort of human body。Because the process of static discharge is very fast, before the first protection interval 21 does not contact with conductive guide 62 with the 3rd protection interval 41, static electricity on human body will discharge off。
Second stage: when PCB single board 1 inserts equipment machine frame 6 completely, at this moment the electrostatic of human body has all discharged complete, first static electricity shield layer 2 and the 3rd static electricity shield layer 4 all with equipment machine frame 6 conducting contact, include the whole isoelectric level of panel 5, it is ensured that the safety of system。
Above, it is only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any change expected without creative work or replacement, all should be encompassed within protection scope of the present invention。Therefore, protection scope of the present invention should be as the criterion with claims protection defined。
Claims (9)
1. a PCB single board electrostatic protection method, it is characterised in that comprise the following steps:
S1, the first to the 3rd static electricity shield layer being sequentially connected with is set in PCB single board；
S2, in PCB single board install panel, make described panel and the second static electricity shield layer contact；
S3, described first static electricity shield layer is divided into spaced first protection interval and second protection interval, it is connected by the first resistance between described first protection interval and the second protection interval, described 3rd static electricity shield layer is divided into spaced 3rd protection interval and the 4th protection interval, is connected by the second resistance between described 3rd protection interval and the 4th protection interval；
S4, by panel described in human contact, described PCB single board is inserted in the equipment machine frame of ground connection。
2. PCB single board electrostatic protection method as claimed in claim 1, it is characterized in that, described equipment machine frame includes framework and conductive guide, described conductive guide is symmetricly set on the two ends up and down of described framework, in described step S4, described PCB single board is inserted into described equipment machine frame include: the one end protecting interval and the 4th protection interval by described second contacts described conductive guide simultaneously, then slide along described conductive guide to described framework, make in the first static electricity shield layer and the 3rd fully-inserted to the described framework of electrostatic layer, and with described framework conducting contact。
3. PCB single board electrostatic protection method as claimed in claim 2, it is characterised in that the mode molding that described first to the 3rd static electricity shield layer is windowed by PCB single board surface paving copper and solder mask。
4. a PCB single board systems for providing electrostatic discharge protection, it is characterised in that including:
First static electricity shield layer, the second static electricity shield layer and the 3rd static electricity shield layer；
PCB single board, three avris of described PCB single board are connected with described first to the 3rd static electricity shield layer respectively successively；
Equipment machine frame, is connected with ground by earth lead, and is used for installing described PCB single board；
Panel, is arranged in described PCB single board, and contacts with described second static electricity shield layer；
Wherein, described first static electricity shield layer includes spaced first protection interval, the second protection interval and the first resistance, it is connected by the first resistance between described first protection interval and the second protection interval, described 3rd static electricity shield layer includes spaced 3rd protection interval, the 4th protection interval and the second resistance, is connected by the second resistance between described 3rd protection interval and the 4th protection interval。
5. PCB single board systems for providing electrostatic discharge protection as claimed in claim 4, it is characterized in that, also including: described PCB single board is positioned at multiple connection seats of the side of described second static electricity shield layer, described panel is connected through described connection seat and described PCB single board are fixing by bolt。
6. the PCB single board systems for providing electrostatic discharge protection as described in claim 4 or 5, it is characterised in that the length of described first protection interval and the second protection interval is equal, the length of described 3rd protection interval and the 4th protection interval is equal。
7. PCB single board systems for providing electrostatic discharge protection as claimed in claim 6, it is characterised in that the spacing between the first protection interval and the second protection interval, the spacing between the 3rd protection interval and the 4th protection interval are 5-20mm。
8. the PCB single board systems for providing electrostatic discharge protection as described in claim 4 or 5, it is characterised in that described first resistance and the second resistance be sized to 10Mohm, rated power is 1/4W。
9. the PCB single board systems for providing electrostatic discharge protection as described in claim 4 or 5 or 7, it is characterised in that described equipment machine frame includes framework and conductive guide, and described conductive guide is symmetricly set on the two ends up and down of described framework。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610221357.1A CN105704912A (en) | 2016-04-11 | 2016-04-11 | Electrostatic protection method and system of single printed circuit board (PCB) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610221357.1A CN105704912A (en) | 2016-04-11 | 2016-04-11 | Electrostatic protection method and system of single printed circuit board (PCB) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105704912A true CN105704912A (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610221357.1A Pending CN105704912A (en) | 2016-04-11 | 2016-04-11 | Electrostatic protection method and system of single printed circuit board (PCB) |
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| Country | Link |
|---|---|
| CN (1) | CN105704912A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2703382Y (en) * | 2002-11-08 | 2005-06-01 | 中兴通讯股份有限公司 | Simple antielectrostatic device for communication equipment with plate inserting mode |
| CN102006713A (en) * | 2009-05-05 | 2011-04-06 | 北京中庆微数字设备开发有限公司 | Circuit board with static protection structure |
| CN103857247A (en) * | 2012-12-05 | 2014-06-11 | 深圳市共进电子股份有限公司 | Anti-electrostatic interference cabinet veneer |
-
2016
- 2016-04-11 CN CN201610221357.1A patent/CN105704912A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2703382Y (en) * | 2002-11-08 | 2005-06-01 | 中兴通讯股份有限公司 | Simple antielectrostatic device for communication equipment with plate inserting mode |
| CN102006713A (en) * | 2009-05-05 | 2011-04-06 | 北京中庆微数字设备开发有限公司 | Circuit board with static protection structure |
| CN103857247A (en) * | 2012-12-05 | 2014-06-11 | 深圳市共进电子股份有限公司 | Anti-electrostatic interference cabinet veneer |
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Application publication date: 20160622 |
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| RJ01 | Rejection of invention patent application after publication |