CN104270881B - A kind of electrostatic prevention structure - Google Patents
A kind of electrostatic prevention structure Download PDFInfo
- Publication number
- CN104270881B CN104270881B CN201410469848.9A CN201410469848A CN104270881B CN 104270881 B CN104270881 B CN 104270881B CN 201410469848 A CN201410469848 A CN 201410469848A CN 104270881 B CN104270881 B CN 104270881B
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- China
- Prior art keywords
- press
- metal key
- mainboard
- discharge line
- prevention structure
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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.)
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- Elimination Of Static Electricity (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention discloses a kind of electrostatic prevention structure, by setting up discharge line in the product, one end of discharge line is near metal key-press, the other end is then near the ground end of mainboard, when the charge buildup of metal key-press is gone up to a certain extent, the mode of point discharge can be first passed through by charge transfer to discharge line, and the earth terminal eventually through mainboard discharges, and then avoid the electric charge on metal key-press and puncture dielectric film electronic devices and components on mainboard and discharge at random, thus protect on mainboard electronic devices and components from static damage, the technique making metal key-press can be promoted on a large scale.
Description
Technical field
The present invention relates to field of electronic devices, specifically, relate to a kind of electrostatic prevention structure.
Background technology
Along with the arrival of information age, people are increasingly stronger to the dependence of electronic equipment, mobile phone,
Computer/PoS (point of sales terminal) has been increasingly becoming the essential electronics of the modern life and has produced
Product, people are more and more higher to the requirement of its outward appearance and performance.At present, a lot of electronic equipments are all
It is furnished with button miscellaneous, realizes the operation to electronic equipment by button, such as, switch
The operations such as machine, adjustment volume.
Traditional electronic equipment casing and button typically use the plastics of isolation material, therefore can keep away
Exempting from electrostatic or contact electric leakage that human body brings, but plastics compare for metal, feel is relatively
Difference, and glossiness is also less than metal, and therefore people more favor in using metal key-press
Electronic equipment.But metal key-press is applied in electronic product, exists than more serious electrostatic
Protection question: owing to electric charge is easily accumulated on metal, if these electric charges are not dredged,
The electrical potential difference between metal key-press and device element can be caused to be continuously increased.When electrical potential difference reaches one
The dielectric between metal key-press and device element will be punctured when determining degree, cause device element
Damage.
There is the uncertain situation of discharge line in current technology, its discharge line there will be such as figure
Two kinds of situations of 1A and Figure 1B.Figure 1A solves electrostatic problem by device is carried out shielding,
But there are the following problems in meeting: a. finds the dielectric weak link shown in this figure not allow very much
Easily；The most such as confirm this weak link, it may be necessary to the change of structure/circuit etc. is just avoided that electrostatic
Harm；C. as used shielding material to shield, equipment is costly caused to become because of shielding material
This increase.Release electrostatic problem in Figure 1B cannot solve, and can only abandon using metal key-press.
Fig. 2 shows and produces electric discharge between the electronic devices and components 4 on metal key-press 6 and mainboard 3
Schematic diagram.After metal key-press 6 have accumulated a certain amount of electric charge, owing to can release nowhere
Putting, therefore the electrical potential difference between metal key-press 6 and electronic devices and components 4 can be gradually increased, finally
May puncture dielectric film 2 and form the discharge path of L1, L2, L3, this can be to electronics unit
Device 4 causes damage.
In sum, in the prior art, metal key-press is used to receive many restrictions.
Summary of the invention
The invention provides a kind of electrostatic prevention structure, be applied on electronic product, described electronics produces
Product include shell and mainboard, and described mainboard is provided with some electronic devices and components and metal key-press,
Described metal key-press includes button trigger, passes through when described metal key-press is by physical depression
Described button trigger exports a signal of telecommunication, wherein:
Described shell is provided with opening, outside metal key-press described at least is given by described opening
Dew；
Being provided with at least one discharge line in described shell, one end of each described discharge line is leaned on
Nearly described metal key-press, and the described discharge line other end is near described mainboard, puts described in utilization
The electric charge of described metal key-press is discharged by the way of point discharge by electric line.
Above-mentioned electrostatic prevention structure, wherein, is provided with between described mainboard and described metal key-press
One dielectric film.
Above-mentioned electrostatic prevention structure, wherein, described discharge line passes described dielectric film.
Above-mentioned electrostatic prevention structure, wherein, one end of described discharge line is near described mainboard
Earth terminal, utilizes described discharge line electricity by described metal key-press by the way of point discharge
Lotus is discharged into described mainboard earth terminal, and this earth terminal is on mainboard and away from electronics unit device
Part.
Above-mentioned electrostatic prevention structure, wherein, described discharge line is near metal key-press and mainboard
The two ends of earth terminal are sharp end；
Described discharge line remaining surface in addition to the sharp end at two ends is coated with one layer of isolation material,
And described discharge line is embedded in housings near the discharge line of housing portion.
Above-mentioned electrostatic prevention structure, wherein, described discharge line is near the sharp end of metal key-press
Open surfaces without departing from shell.
The present invention is that the electrostatic charge on metal key-press provides at least one discharge path determined,
The electrostatic charge of metal key-press can be prevented effectively from puncture dielectric film electronic devices and components on mainboard and enter
The random electric discharge of row, thus protect on mainboard electronic devices and components from static damage, make metal by
The technique of key can be promoted on a large scale.
Accompanying drawing explanation
The detailed description with reference to the following drawings, non-limiting example made by reading, this
Bright and feature, profile and advantage will become more apparent upon.Mark identical in whole accompanying drawings
Indicate identical part.The most deliberately it is drawn to scale accompanying drawing, it is preferred that emphasis is the present invention is shown
Purport.
Two kinds of structural representations when Figure 1A and Figure 1B is to use metal key-press in prior art；
Fig. 2 is to there is discharge line in prior art between metal key-press and electronic devices and components
Schematic diagram；
A kind of electrostatic prevention structure schematic diagram that Fig. 3 provides for the present invention.
Detailed description of the invention
In the following description, a large amount of concrete details is given to provide to the present invention more
Understand thoroughly.It is, however, obvious to a person skilled in the art that the present invention
Can be carried out without these details one or more.In other example, in order to keep away
Exempt to obscure with the present invention, technical characteristics more well known in the art are not described.
In order to thoroughly understand the present invention, detailed step and in detail will be proposed in following description
Thin structure, in order to explaination technical scheme.Presently preferred embodiments of the present invention is retouched in detail
State as follows, but in addition to these describe in detail, the present invention can also have other embodiments.
The invention provides a kind of electrostatic prevention structure, can refer to shown in Fig. 3, comprising: outward
Shell 1 and mainboard 3, mainboard 3 is provided with some electronic devices and components 4 and metal key-press 5.
Wherein, shell 1 is provided with opening, and at least one metal key-press 6 is exposed by opening,
And metal key-press 6 is not formed with shell 1 and contacts.As option, above-mentioned metal key-press 6
For push type button, can realize carrying possessing the present invention by this metal key-press 6 of physical depression
The electronic equipment of the structure of confession controls accordingly, such as switching on and shutting down, adjust volume, photograph,
Read the operations such as data.One as exemplary but be not intended as limitation embodiment in, should
Metal key-press 6 protrudes from the surface of shell 1, and then conveniently carries out physical depression.Meanwhile, gold
The surface belonging to button 6 can be convex cambered surface or be concavity cambered surface, and then provides more preferable sense of touch:
Use convex cambered surface convenient to touch, use concavity cambered surface then can more fit people
Finger tip, businessman can the shape of customized metal key-press 6, this there is no impact to the present invention.
Button trigger 5, the position of button trigger 5 and metal key-press 6 is had on mainboard 3
Position is corresponding, and when pressing metal key-press 6, button trigger 5 can receive from metal
The pressure of button 6, and export a signal of telecommunication, thus realize electronic equipment is carried out corresponding operating.
It is provided with a dielectric film 2 between mainboard 3 and shell 1, and this dielectric film 2 is positioned at mainboard
Between 3 and metal key-press 6, dielectric film 2 can avoid the electronics on mainboard 3 to a certain extent
Electric discharge phenomena are produced between components and parts 4 and metal key-press 6.
In order to bring more preferable anti-static effect, the present invention is provided with at least one in the enclosure and puts
Electric line 7, one end of each discharge line 7 is near metal key-press 6, and the other end is near mainboard
3, utilize discharge line 7 to be released by the electric charge of metal key-press 6 by the way of point discharge
Put.As option, each discharge line 7 is provided with a sharp end near metal key-press 6, should
Sharp end can contacting metal button 6 also can not contacting metal button 6, in order to metal key-press 6
The release of electric charge；As option, the other end of each discharge line 7 is then near the ground connection of mainboard
End (GND), this end is provided with a sharp end, and this sharp end can contact earth terminal, it is possible to no
Contact earth terminal.This earth terminal (GND) on mainboard and away from electronic devices and components 4, thus
Point discharge mode is utilized to be directed into earth terminal the electric charge on discharge line 7, it is to avoid metal is pressed
Charge buildup in key 6 too much thus produces the electronics unit device on metal key-press 6 with mainboard 3
Punch-through effect is produced between part 4.One exemplary but be not intended as limitation embodiment in, respectively
Discharge line 7, is having without departing from the open surfaces of shell 1 near the sharp end of metal key-press 6
The electric charge being beneficial to metal key-press 6 discharges while discharge line 7, more can ensure that handfeel of keys.
Wherein, each discharge line 7 is through dielectric film 2, and the discharge lines of close housing portion
Road 7 is embedded in housings；Discharge line 7 is in addition to two ends simultaneously, and other outer surface covers
It is stamped one layer of isolation material (such as plastics), further avoids electronic devices and components 4 to be discharged
The impact of circuit 7 electrostatic charge.
In order to realize the more preferable point discharge electric charge with release metal key-press 6, the present invention uses
Low-impedance conductive material as discharge line 7, such as can be selected for electric conductivity preferably silver,
A kind of in copper, gold, aluminium, tungsten, nickel, iron or use two or more metal alloy compositions,
Thus be conducive to deriving the electric charge of metal key-press 6, it is preferred to use copper cash as discharge line 7,
Its electric conductivity is preferable, and cost is relatively low.
In sum, owing to present invention employs as above technical scheme, by setting up in a device
Discharge line, one end of discharge line near metal key-press, the other end then near the ground end of mainboard,
When the charge buildup of metal key-press is gone up to a certain extent, the mode of point discharge can be first passed through
By charge transfer to discharge line, and the earth terminal eventually through mainboard discharges, and then keeps away
Exempt from metal key-press to discharge at random with the electronic devices and components on mainboard, thus protect mainboard
Upper electronic devices and components, improve the persistence of device, make the technique of metal key-press can obtain greatly
Scope is promoted.
Above presently preferred embodiments of the present invention is described.It is to be appreciated that the present invention
Being not limited to above-mentioned particular implementation, the equipment and the structure that do not describe in detail the most to the greatest extent should
It is interpreted as being practiced with the common mode in this area；Any it is familiar with those skilled in the art
Member, without departing under technical solution of the present invention ambit, the method that all may utilize the disclosure above
With technology contents, technical solution of the present invention made many possible variations and modification, or be revised as
The Equivalent embodiments of equivalent variations, this has no effect on the flesh and blood of the present invention.Therefore, every
Without departing from the content of technical solution of the present invention, the technical spirit of the foundation present invention is to above example
Any simple modification, equivalent variations and the modification done, all still falls within technical solution of the present invention and protects
In the range of protecting.
Claims (5)
1. an electrostatic prevention structure, is applied on electronic product, outside described electronic product includes
Shell and mainboard, described mainboard is provided with some electronic devices and components and metal key-press, described metal
Button includes button trigger, when described metal key-press is by physical depression by described button
Trigger exports a signal of telecommunication, it is characterised in that:
Described shell is provided with opening, outside metal key-press described at least is given by described opening
Dew；
Being provided with at least one discharge line in described shell, one end of each described discharge line is leaned on
Nearly described metal key-press, and the described discharge line other end is near the earth terminal of described mainboard, profit
The electric charge of described metal key-press is released by the way of point discharge with described discharge line
Put；
Described discharge line is sharp end near the two ends of metal key-press and the earth terminal of mainboard；
Described discharge line remaining surface in addition to described sharp end is coated with one layer of isolation material,
And described discharge line is embedded in housings near the discharge line of housing portion.
2. electrostatic prevention structure as claimed in claim 1, it is characterised in that described mainboard with
A dielectric film it is provided with between described metal key-press.
3. electrostatic prevention structure as claimed in claim 2, it is characterised in that described discharge lines
Road passes described dielectric film.
4. electrostatic prevention structure as claimed in claim 1, it is characterised in that described discharge lines
The one end on road, near the earth terminal of described mainboard, utilizes described discharge line by point discharge
The electric charge of described metal key-press is discharged into described mainboard earth terminal by mode, and this earth terminal exists
On mainboard and away from electronic devices and components.
5. electrostatic prevention structure as claimed in claim 1, it is characterised in that described discharge lines
Road near the sharp end of metal key-press without departing from the open surfaces of shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410469848.9A CN104270881B (en) | 2014-09-15 | 2014-09-15 | A kind of electrostatic prevention structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410469848.9A CN104270881B (en) | 2014-09-15 | 2014-09-15 | A kind of electrostatic prevention structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104270881A CN104270881A (en) | 2015-01-07 |
| CN104270881B true CN104270881B (en) | 2016-08-17 |
Family
ID=52162342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410469848.9A Expired - Fee Related CN104270881B (en) | 2014-09-15 | 2014-09-15 | A kind of electrostatic prevention structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN104270881B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI607465B (en) * | 2015-07-22 | 2017-12-01 | 達方電子股份有限公司 | Keyboard structure |
| CN107949200B (en) * | 2017-12-19 | 2024-01-02 | 惠科股份有限公司 | Display device and shell structure thereof |
| CN113838838A (en) | 2020-06-24 | 2021-12-24 | 群创光电股份有限公司 | Display device |
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| JPH05325707A (en) * | 1992-05-20 | 1993-12-10 | Pfu Ltd | Electrostatic protection device for keyboard |
| WO1994004012A1 (en) * | 1992-07-29 | 1994-02-17 | Key Tronic Corporation | Computer keyboard with electrostatic discharge feature |
| CN2648764Y (en) * | 2003-08-18 | 2004-10-13 | 仁宝电脑工业股份有限公司 | Static electricity eliminating device |
| CN1842257A (en) * | 2005-03-31 | 2006-10-04 | 华硕电脑股份有限公司 | Electronic device with release electrostatic structure |
| JP2007080643A (en) * | 2005-09-13 | 2007-03-29 | Polymatech Co Ltd | Key sheet |
| JP2007207497A (en) * | 2006-01-31 | 2007-08-16 | Ｎｅｃディスプレイソリューションズ株式会社 | Anti-static structure of push-button switch device in electronic equipment |
| CN101286421A (en) * | 2008-05-26 | 2008-10-15 | 德信无线通讯科技（北京）有限公司 | An electrostatic prevention key structure |
| CN101516167A (en) * | 2008-02-18 | 2009-08-26 | 鸿富锦精密工业（深圳）有限公司 | Electronic device |
| CN101599376A (en) * | 2008-06-06 | 2009-12-09 | 深圳富泰宏精密工业有限公司 | Press-key structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5197420B2 (en) * | 2009-02-17 | 2013-05-15 | キヤノン株式会社 | Electronics |
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2014
- 2014-09-15 CN CN201410469848.9A patent/CN104270881B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05325707A (en) * | 1992-05-20 | 1993-12-10 | Pfu Ltd | Electrostatic protection device for keyboard |
| WO1994004012A1 (en) * | 1992-07-29 | 1994-02-17 | Key Tronic Corporation | Computer keyboard with electrostatic discharge feature |
| CN2648764Y (en) * | 2003-08-18 | 2004-10-13 | 仁宝电脑工业股份有限公司 | Static electricity eliminating device |
| CN1842257A (en) * | 2005-03-31 | 2006-10-04 | 华硕电脑股份有限公司 | Electronic device with release electrostatic structure |
| JP2007080643A (en) * | 2005-09-13 | 2007-03-29 | Polymatech Co Ltd | Key sheet |
| JP2007207497A (en) * | 2006-01-31 | 2007-08-16 | Ｎｅｃディスプレイソリューションズ株式会社 | Anti-static structure of push-button switch device in electronic equipment |
| CN101516167A (en) * | 2008-02-18 | 2009-08-26 | 鸿富锦精密工业（深圳）有限公司 | Electronic device |
| CN101286421A (en) * | 2008-05-26 | 2008-10-15 | 德信无线通讯科技（北京）有限公司 | An electrostatic prevention key structure |
| CN101599376A (en) * | 2008-06-06 | 2009-12-09 | 深圳富泰宏精密工业有限公司 | Press-key structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104270881A (en) | 2015-01-07 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 315000 Zhejiang city of Ningbo province high tech Zone to 999 Lane Road, room 5 No. 502-11 Applicant after: Ningbo SageReal Communication Co., Ltd. Address before: 315000 Zhejiang city of Ningbo province Fenghua Dacheng Road No. 999 waveguide B Industrial Park Gate No. 2 room Applicant before: Ningbo SageReal Communication Co., Ltd. |
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| COR | Change of bibliographic data | ||
| 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: 20160817 Termination date: 20170915 |