CN104270881A - Anti-static structure - Google Patents
Anti-static structure Download PDFInfo
- Publication number
- CN104270881A CN104270881A CN201410469848.9A CN201410469848A CN104270881A CN 104270881 A CN104270881 A CN 104270881A CN 201410469848 A CN201410469848 A CN 201410469848A CN 104270881 A CN104270881 A CN 104270881A
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- Prior art keywords
- press
- metal key
- discharge line
- mainboard
- prevention structure
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- Elimination Of Static Electricity (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention discloses an anti-static structure. The anti-static structure is characterized in that a discharging circuit is additionally arranged in a product; one end of the discharging circuit is close to a metal key, and while the other end of the discharging circuit is close to a ground end of a main board; when the electric charge of the metal key is accumulated to reach a certain degree, the electric charge is firstly transmitted to the discharging circuit by a point discharging manner, and then is released through the ground end of the main board, thus the problem that the electric discharge of the metal key strikes through an insulating film to randomly discharge to an electronic element on the main board can be avoided, and as a result, the electronic element on the main board can be prevented from being damaged by the static, and the metal key process can be widely popularized.
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 more and more stronger to the dependence of electronic equipment, and mobile phone, computer/PoS (point of sales terminal) becomes the requisite electronic product of the modern life gradually, and the requirement of people to its outward appearance and performance is also more and more higher.At present, a lot of electronic equipment is all furnished with button miscellaneous, realizes the operation to electronic equipment by button, the operations such as such as switching on and shutting down, adjustment volume.
Traditional electronic equipment casing and button generally adopt the plastics of isolation material, therefore the electrostatic that human body can be avoided to bring or contact electric leakage, the metal but plastics are compared, feel is poor, and glossiness is also less than metal, therefore people favor the electronic equipment in adopting metal key-press more.But metal key-press is applied in electronic product, there is more serious electrostatic defending problem: because electric charge easily accumulates on metal, if these electric charges are not dredged, the electrical potential difference between metal key-press and device element can be caused constantly to increase.The dielectric between metal key-press and device element will be punctured when electrical potential difference acquires a certain degree, cause the damage of device element.
There is the uncertain situation of discharge line in current technology, its discharge line there will be as Figure 1A and Figure 1B two kinds of situations.Figure 1A solves electrostatic problem by carrying out shielding to device, but can there are the following problems: a. finds the dielectric weak link shown in this figure to be not easy very much; B. as confirmed this weak link, the change of possible Structure of need/circuit etc. just can avoid electrostatic hazard; C. as adopted shielding material to shield, because shielding material costly causes equipment cost to increase.Release electrostatic problem in Figure 1B cannot solve, and can only abandon using metal key-press.
Fig. 2 shows the schematic diagram producing electric discharge between the electronic devices and components 4 on metal key-press 6 and mainboard 3.After have accumulated a certain amount of electric charge in metal key-press 6, owing to can discharge nowhere, therefore the electrical potential difference between metal key-press 6 and electronic devices and components 4 can increase gradually, and finally may puncture dielectric film 2 and form the discharge path of L1, L2, L3, this can cause damage to electronic devices and components 4.
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 electronic product comprises shell and mainboard, described mainboard is provided with some electronic devices and components and metal key-press, described metal key-press comprises button trigger, a signal of telecommunication is exported by described button trigger when described metal key-press is subject to physical depression, wherein:
Described shell is provided with opening, and at least one described metal key-press is exposed by described opening;
At least one discharge line is provided with in described shell, one end of each described discharge line is near described metal key-press, and the described discharge line other end is near described mainboard, described discharge line is utilized to be discharged by the electric charge of described metal key-press by the mode of point discharge.
Above-mentioned electrostatic prevention structure, wherein, is provided with a dielectric film between described mainboard and described metal key-press.
Above-mentioned electrostatic prevention structure, wherein, described discharge line is through described dielectric film.
Above-mentioned electrostatic prevention structure, wherein, one end of described discharge line, near the earth terminal of described mainboard, utilizes described discharge line, by the mode of point discharge, the electric charge of described metal key-press is discharged into described mainboard earth terminal, and this earth terminal is on mainboard and away from electronic devices and components.
Above-mentioned electrostatic prevention structure, wherein, described discharge line is sharp end near the two ends of the earth terminal of metal key-press and mainboard;
Described discharge line remaining surface except the sharp end at two ends is coated with one deck isolation material, and described discharge line is embedded in housings near the discharge line of housing parts.
Above-mentioned electrostatic prevention structure, wherein, described discharge line does not exceed the open surfaces of shell near the sharp end of metal key-press.
The present invention is that the electrostatic charge on metal key-press provides at least one discharge path determined; can effectively avoid the electrostatic charge of metal key-press to puncture dielectric film to discharge at random to the electronic devices and components on mainboard; thus protect electronic devices and components on mainboard and, from static damage, the technique of metal key-press can be promoted on a large scale.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, the present invention and feature, profile and advantage will become more obvious.Mark identical in whole accompanying drawing indicates identical part.Deliberately proportionally do not draw accompanying drawing, focus on purport of the present invention is shown.
Figure 1A and Figure 1B is two kinds of structural representations when adopting metal key-press in prior art;
Fig. 2 is the schematic diagram that there is discharge line in prior art between metal key-press and electronic devices and components;
Fig. 3 is a kind of electrostatic prevention structure schematic diagram provided by the invention.
Embodiment
In the following description, a large amount of concrete details is given to provide more thorough understanding of the invention.But, it is obvious to the skilled person that the present invention can be implemented without the need to these details one or more.In other example, in order to avoid obscuring 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 detailed structure will be proposed in following description, to explain technical scheme of the present invention.Preferred embodiment of the present invention is described in detail as follows, but except these are described in detail, the present invention can also have other execution modes.
The invention provides a kind of electrostatic prevention structure, can refer to shown in Fig. 3, it comprises: 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 is push type button, and the electronic equipment that can be realized possessing the structure that the invention provides by this metal key-press 6 of physical depression carries out corresponding control, the operations such as such as switching on and shutting down, adjustment volume, photograph, reading data.One exemplarily property but not as limitation embodiment in, this metal key-press 6 protrudes from the surface of shell 1, and then conveniently carries out physical depression.Simultaneously, the surface of metal key-press 6 can be convex cambered surface or is concavity cambered surface, and then better sense of touch is provided: adopt convex cambered surface conveniently to touch, concavity cambered surface is adopted then can more to fit the finger tip of people, businessman can the shape of customized metal key-press 6, and this there is no impact to the present invention.
Mainboard 3 there is button trigger 5, the position of button trigger 5 is corresponding with the position of metal key-press 6, and when pressing metal key-press 6, button trigger 5 can receive the pressure from metal key-press 6, and export a signal of telecommunication, thus realize carrying out corresponding operating to electronic equipment.
Be provided with a dielectric film 2 between mainboard 3 and shell 1, and this dielectric film 2 is between mainboard 3 and metal key-press 6, dielectric film 2 can be avoided producing electric discharge phenomena between the electronic devices and components 4 on mainboard 3 and metal key-press 6 to a certain extent.
In order to bring better anti-static effect, the present invention is provided with at least one discharge line 7 in the enclosure, one end of each discharge line 7 is near metal key-press 6, and the other end is near mainboard 3, utilizes discharge line 7 to be discharged by the electric charge of metal key-press 6 by the mode of point discharge.As option, each discharge line 7 is provided with a sharp end near metal key-press 6, this sharp end can contacting metal button 6 also can not contacting metal button 6 so that the release of metal key-press 6 electric charge; As option, the other end of each discharge line 7 is then near the earth terminal (GND) of mainboard, and this end is provided with a sharp end, and this sharp end can contact earth terminal, also can not contact earth terminal.This earth terminal (GND) is on mainboard and away from electronic devices and components 4, thus utilize point discharge mode to be directed into earth terminal the electric charge on discharge line 7, avoid the charge buildup in metal key-press 6 too much thus produce between the electronic devices and components 4 on metal key-press 6 and mainboard 3 producing punch-through effect.Exemplary but in embodiment not as limitation, each discharge line 7 does not exceed the open surfaces of shell 1 near the sharp end of metal key-press 6, while the electric charge being conducive to metal key-press 6 is released into discharge line 7, more can guarantee handfeel of keys one.
Wherein, each discharge line 7 through dielectric film 2, and is embedded in housings near the discharge line 7 of housing parts; Discharge line 7 is except two ends simultaneously, and other outer surface is coated with one deck isolation material (such as plastics), further avoids electronic devices and components 4 by the impact of discharge line 7 electrostatic charge.
In order to realize better point discharge to discharge the electric charge of metal key-press 6, the present invention adopts low-impedance conductive material as discharge line 7, such as can select a kind of preferably in silver, copper, gold, aluminium, tungsten, nickel, iron of electric conductivity or adopt two or more metal alloy compositions, thus be conducive to the electric charge of metal key-press 6 to be derived, preferred employing copper cash is as discharge line 7, its conductivity is better, and cost is also lower.
In sum, owing to present invention employs as above technical scheme, by setting up discharge line in a device, 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, can first by the mode of point discharge by charge transfer to discharge line, and discharge eventually through the earth terminal of mainboard, and then the electronic devices and components avoided on metal key-press and mainboard discharge at random, thus protect electronic devices and components on mainboard, improve the persistence of device, the technique of metal key-press can be promoted on a large scale.
Above preferred embodiment of the present invention is described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, the equipment wherein do not described in detail to the greatest extent and structure are construed as to be implemented with the common mode in this area; Any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or being revised as the Equivalent embodiments of equivalent variations, this does not affect flesh and blood of the present invention.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (6)
1. an electrostatic prevention structure, be applied on electronic product, described electronic product comprises shell and mainboard, described mainboard is provided with some electronic devices and components and metal key-press, described metal key-press comprises button trigger, export a signal of telecommunication when described metal key-press is subject to physical depression by described button trigger, it is characterized in that:
Described shell is provided with opening, and at least one described metal key-press is exposed by described opening;
At least one discharge line is provided with in described shell, one end of each described discharge line is near described metal key-press, and the described discharge line other end is near described mainboard, described discharge line is utilized to be discharged by the electric charge of described metal key-press by the mode of point discharge.
2. electrostatic prevention structure as claimed in claim 1, is characterized in that, be provided with a dielectric film between described mainboard and described metal key-press.
3. electrostatic prevention structure as claimed in claim 2, is characterized in that, described discharge line is through described dielectric film.
4. electrostatic prevention structure as claimed in claim 1, it is characterized in that, one end of described discharge line is near the earth terminal of described mainboard, utilize described discharge line, by the mode of point discharge, the electric charge of described metal key-press is discharged into described mainboard earth terminal, this earth terminal is on mainboard and away from electronic devices and components.
5. electrostatic prevention structure as claimed in claim 4, is characterized in that, described discharge line is sharp end near the two ends of the earth terminal of metal key-press and mainboard;
The remaining surface of described discharge line except described sharp end is coated with one deck isolation material, and described discharge line is embedded in housings near the discharge line of housing parts.
6. electrostatic prevention structure as claimed in claim 5, is characterized in that, described discharge line does not exceed the open surfaces of shell near the sharp end of metal key-press.
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 true CN104270881A (en) | 2015-01-07 |
| CN104270881B CN104270881B (en) | 2016-08-17 |
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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) |
Cited By (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 |
| CN107949200A (en) * | 2017-12-19 | 2018-04-20 | 惠科股份有限公司 | Display device and its shell structure |
| US11908350B2 (en) | 2020-06-24 | 2024-02-20 | Innolux Corporation | 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 |
| US20100206707A1 (en) * | 2009-02-17 | 2010-08-19 | Canon Kabushiki Kaisha | Electronic apparatus |
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2014
- 2014-09-15 CN CN201410469848.9A patent/CN104270881B/en not_active Expired - Fee Related
Patent Citations (10)
| 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 |
| US20100206707A1 (en) * | 2009-02-17 | 2010-08-19 | Canon Kabushiki Kaisha | Electronic apparatus |
Cited By (4)
| 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 |
| CN107949200A (en) * | 2017-12-19 | 2018-04-20 | 惠科股份有限公司 | Display device and its shell structure |
| CN107949200B (en) * | 2017-12-19 | 2024-01-02 | 惠科股份有限公司 | Display device and shell structure thereof |
| US11908350B2 (en) | 2020-06-24 | 2024-02-20 | Innolux Corporation | Display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104270881B (en) | 2016-08-17 |
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| C06 | Publication | ||
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| 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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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170915 |
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| CF01 | Termination of patent right due to non-payment of annual fee |