CN201294178Y - Protection device for keyboard circuit - Google Patents
Protection device for keyboard circuit Download PDFInfo
- Publication number
- CN201294178Y CN201294178Y CNU2008201460252U CN200820146025U CN201294178Y CN 201294178 Y CN201294178 Y CN 201294178Y CN U2008201460252 U CNU2008201460252 U CN U2008201460252U CN 200820146025 U CN200820146025 U CN 200820146025U CN 201294178 Y CN201294178 Y CN 201294178Y
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- Prior art keywords
- keyboard
- flexible circuit
- circuit board
- board
- pcb board
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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.)
- Expired - Fee Related
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Abstract
The utility model relates to a protection device of a keyboard circuit, which comprises an integral housing, a keyboard P C B board, conductive rubber, a flexible circuit board and metal dome paster, wherein the flexible circuit board and the metal dome paster are covered above the keyboard P C B board, the flexible circuit board is full of protection wires, and the protection wires are connected with a protection wire of the keyboard P C B board, metal domes on the metal dome paster are correspondingly contacted with key golden fingers on the keyboard P C B board, and holes which conveniently let the conductive rubber through are arranged on the positions of the flexible circuit board and the metal dome paste, which are corresponding to all uncovering prevention contacts. The integral housing, the uncovering prevention contacts, the conductive rubber, the keyboard P C B board and the flexible circuit board can be matched with each other to form a safety region, and all the key golden fingers on the keyboard P C B board are within the safety region, therefore, attackers can not uncover the conductive rubber integrally to attack a keyboard, and also can not attack each key on the keyboard.
Description
[technical field]
The utility model relates to a kind of protective device of electronic equipment, particularly a kind of protective device of keyboard circuit.
[background technology]
Electronic equipment such as POS machine, code keypad, ATM and other financial field; keyboard is as the part of input personal identification number; need be subjected to strict protection; keyboard protection in the past is the anti-contact of taking off that is provided with a plurality of connection protection cablings on the pcb board of keyboard basically; conductive rubber is pressed on anti-taking off on the contact by machine shell, makes the anti-testing circuit conducting of taking off.Like this, if the assailant attempts full wafer when opening machine shell and attacking keyboard, conductive rubber is just taken off the contact and is unclamped with anti-; cause that the anti-testing circuit of taking off opens circuit etc.; thereby trigger related mechanism to wipe the sensitive data information of main frame, like this, sensitive data information has just obtained effective protection.But this protected mode can't be at the attack of single button on the keyboard; anti-taking off under the situation of contact can not touched as the assailant; use sharp other instruments such as pocket knife; excavate each button; until the keyboard golden finger that manifests in the PCB printed board, thereby the attack of being correlated with, distort to obtain personal identification number.Therefore, on the basis that has keyboard to prevent taking off, need the keyboard golden finger is done safer protection, to increase the difficulty of outside world.
[utility model content]
The technical problems to be solved in the utility model is to provide a kind of protective device of keyboard circuit, attacks keyboard thereby the assailant both can't full wafer open conductive rubber, can't attack at single button on the keyboard again.
The utility model is achieved in that a kind of protective device of keyboard circuit; comprise machine shell and be provided with the keyboard pcb board of protecting cabling; this keyboard pcb board is provided with the button golden finger; remove other position of button golden finger and be provided with the anti-anti-contact of taking off of taking off testing circuit of a plurality of connections; conductive rubber is pressed on by machine shell and takes off on the contact; above described keyboard pcb board, cover one deck flexible circuit board and one pot of young sheet paster from top to bottom respectively; be covered with the protection cabling on this flexible circuit board; this protection cabling is connected with the protection cabling of described keyboard pcb board; young sheet of pot and the corresponding contact of button golden finger on the keyboard pcb board on the young sheet paster of this pot, this flexible circuit board and pot young sheet paster only are provided with in the positions of preventing taking off the contact corresponding to all and just are beneficial to the perforate that conductive rubber passes through.
Wherein, the two-sided gum of the described young sheet paster of pot, the young sheet paster upper and lower surface of pot sticks together with flexible circuit board and keyboard pcb board respectively by gum.
Wherein, described flexible circuit board comprises at least 2 layers of wiring board, and every layer of wiring board all is covered with the protection cabling, and the protection cabling is 1 road or 2 road signals.
Wherein, the protection cabling of every layer of wiring board of described flexible circuit board is 2 road signals, and this 2 tunnel signal lead is parallel adjacent, and live width is the same with the distance between centers of tracks size.
Wherein, described flexible circuit board comprises that one prolongs lead-in wire; this prolongation lead-in wire is located at the edge of flexible circuit board; its end is provided with connection pads; and this connection pads is located on the wiring underlayer plate of described flexible circuit board; described prolongation lead-in wire is by in the default perforate in the edge of keyboard pcb board, connection pads reached in the safety zone of keyboard pcb board below with protection cabling on the keyboard pcb board to be connected.Or on the wiring underlayer plate of described flexible circuit board, be provided with a connection pads, simultaneously also be provided with a connection pads, be fixed on structural column on the described machine shell by one again and described two connection pads are compressed make its connection in the position of keyboard pcb board top layer correspondence.
Wherein, 4 diagonal positions are provided with the golden finger pad on the described flexible circuit board wiring underlayer plate, on the keyboard pcb board position that should the golden finger pad is provided with and anti-ly takes off the contact, on the machine shell to should the golden finger pad and anti-ly take off contact position and then be provided with structural column.
Wherein, the button golden finger on the described keyboard pcb board comprises the inner ring and the outer ring of notconnect state, and the young sheet of pot on the young sheet paster of described pot and the outer ring of this button golden finger are in normal contact condition, and are in very contact condition with inner ring.
The utlity model has following beneficial effect: have anti-taking off under the situation of defencive function at keyboard; above the keyboard pcb board, cover one deck flexible circuit board again; flexible circuit board is covered with the protection cabling; with the protection keyboard; so just can make the keyboard golden finger ensconce the below of protection cabling on the flexible circuit board; make the assailant can't be by excavating working of plasticss such as keyboard case or rubber parts and direct detection to the keyboard golden finger; add the foregoing anti-function of taking off; thereby make the assailant both can't open conductive rubber attack keyboard by full wafer; can't attack at single button on the keyboard again; thereby improve attack difficulty greatly, greatly increased the security performance of keyboard keyboard.
[description of drawings]
In conjunction with the embodiments the utility model is further described with reference to the accompanying drawings.
Fig. 1 is an overall structure decomposing schematic representation of the present utility model.
Fig. 2 is a button golden finger structural representation of the present utility model.
Fig. 3 is the utility model flexible circuit board reverse side structural representation.
Fig. 4 is the utility model flexible circuit board Facad structure schematic diagram.
[embodiment]
See also shown in Figure 1ly, the protective device of keyboard circuit provided by the utility model comprises machine shell 1, keyboard pcb board 2, flexible circuit board 3 and the young sheet paster 4 of pot.
See also Figure 1 and Figure 2 again, this keyboard pcb board 2 is provided with protection cabling and button golden finger 21, and button golden finger 21 comprises inner ring 211 and outer ring 212.Remove button golden finger 21 other positions and be provided with the anti-contact 22 of taking off that several are uncapped and detect; conductive rubber 5 is pressed on anti-taking off on the contact 22 by machine shell 1; described machine shell 1, anti-contact 22, conductive rubber 5 and the protection cabling taken off cooperate and surround a safety zone, and button golden fingers 21 all on the keyboard pcb board 2 all are in this safety zone.Like this; if the assailant attempts full wafer when taking machine shell 1 apart and attacking keyboard; conductive rubber 5 is just taken off contact 22 and is unclamped with anti-; cause and prevent that taking off testing circuit opens circuit; thereby trigger related mechanism to wipe or to destroy the sensitive data information in the main frame; like this, sensitive data information has just obtained effective protection.
In order to guarantee the safety of single button on the keyboard; above described keyboard pcb board 2, cover one deck flexible circuit board 3; be covered with the protection cabling on this flexible circuit board 3; this protection cabling is connected with the protection cabling of described keyboard pcb board 2; like this; if the assailant attempts single button on the keyboard is attacked; as use sharp pocket knife etc. to excavate each button; the essential protection cabling of attacking earlier on the flexible circuit board; just can expose the keyboard golden finger 21 in the PCB printed board; thereby the attack of being correlated with, this will certainly trigger the associated safety testing mechanism wiping the sensitive data information in the main frame, thereby protects the safety of single button.Wherein in order further to improve the security performance of flexible circuit board 3; described flexible circuit board 3 comprises at least 2 layers of wiring board, and every layer all is covered with the protection cabling, and the protection cabling is 1 road or 2 road signals; when being 2 road signals; its coefficient of safety can be higher, and 2 tunnel signal lead are parallel adjacent, and live width is the same with the distance between centers of tracks size; like this; as long as wherein one the tunnel disconnects or the two-way short circuit, all will trigger associated safety mechanism, wipe or destroy the sensitive data information on the electronic component in the protection zone.
The protection cabling on the above-mentioned flexible circuit board 3 and the protection cabling of described keyboard pcb board are connected with multiple mode; as shown in figures 1 and 3; draw one at described flexible circuit board 3 edges and prolong lead-in wire 31; the end of this prolongation lead-in wire 31 is provided with connection pads 32; and this connection pads 32 is located on the wiring underlayer plate of described flexible circuit board 3; described prolongation lead-in wire 31 is by in the default perforate 23 in the edge of keyboard pcb board 2, connection pads 32 is reached in the safety zone of keyboard pcb board 2 belows with keyboard pcb board 2 on being connected of protection cabling.Perhaps as shown in Figure 4, be on the wiring underlayer plate of described flexible circuit board 3, to be provided with a connection pads 34, also be provided with a connection pads 24 in the position of keyboard pcb board 2 top layer correspondences, be located at a structural column 6 on the described machine shell 1 and described two connection pads 34 (23) are compressed make its connection by being located at one of flexible circuit board 3 tops again.
Please emphasis with reference to illustrated in figures 1 and 2, the young sheet paster 4 two-sided gums of pot, young sheet paster 4 upper and lower surfaces of pot stick together with flexible circuit board 3 and keyboard pcb board 2 respectively by gum.And make button golden finger 21 corresponding contacts on pot young sheet 41 and the keyboard pcb board 2 on the young sheet paster 4 of this pot.Button golden finger 21 comprises the inner ring 211 and outer ring 212 (see figure 2)s of notconnect state, the young sheet 41 of pot on the young sheet paster 4 of described pot is a kind of metal clips, can play electric action, the outer ring 212 of itself and this button golden finger 21 is in normal contact condition, and is in very contact condition with inner ring 211.When the young sheet 41 of pot when be subjected to pushing, the central point of metal clips is recessed, touches the inner ring 211 of keyboard golden finger 21, thus connection inner ring 211 and outer ring 212 make the keyboard circuit conducting, can carry out routine operation to keyboard.
Because conductive rubber 5 is to be pressed on the anti-of keyboard pcb board 2 by machine shell 1 to take off on the contact 22; need on flexible circuit board 3 and the young sheet paster 4 of pot to establish and just be beneficial to the perforate 33 (43) that conductive rubber 5 passes through corresponding to all anti-positions of taking off contact 22; make the safety contact 22 that exposes on the keyboard pcb board 2; pass cooperating of perforate 43 and safety contact 22 by conductive rubber 5 again; to guarantee the anti-testing circuit conducting of taking off; perforate 43 must be avoided the position of keyboard golden finger 21; do not expose to guarantee keyboard golden finger 21 can ensconce the below of this flexible circuit board 3, thereby be protected.While is not opened by full wafer in order to guarantee this flexible circuit board 3, can be provided with circular golden finger pad 35 at 4 diagonal positions on the described flexible circuit board 3 wiring underlayer plates, the second anti-contact 24 of taking off is arranged on the keyboard pcb board 2 of correspondence simultaneously, in like manner correspondence position is established second perforate 45 on the young sheet paster 4 of pot, and another structural column 12 of establishing of correspondence position is pushed down this golden finger pad 35 by second perforate 45 and the second anti-contact 24 maintenance paths of taking off on machine shell 1.This promptly can play machine shell 1 simultaneously, and anti-taking off with flexible circuit board 3 anti-taken off effect.
In sum; the utility model has anti-taking off under the situation of defencive function at keyboard; above the keyboard pcb board, cover one deck flexible circuit board again; flexible circuit board is covered with the protection cabling; so just can make the keyboard golden finger ensconce the below of protection cabling on the flexible circuit board; make the assailant can't be by excavating working of plasticss such as keyboard case or rubber parts and direct detection to the keyboard golden finger; add the foregoing anti-function of taking off; thereby make the assailant both can't open conductive rubber attack keyboard by full wafer; can't attack at single button on the keyboard again; thereby improve attack difficulty greatly, greatly increased the security performance of keyboard keyboard.
Claims (8)
1; a kind of protective device of keyboard circuit; comprise machine shell and be provided with the keyboard pcb board of protecting cabling; this keyboard pcb board is provided with the button golden finger; remove other position of button golden finger and be provided with the anti-anti-contact of taking off of taking off testing circuit of a plurality of connections; conductive rubber is pressed on anti-taking off on the contact by machine shell; it is characterized in that: above described keyboard pcb board, cover one deck flexible circuit board and one pot of young sheet paster from top to bottom respectively; be covered with the protection cabling on this flexible circuit board; this protection cabling is connected with the protection cabling of described keyboard pcb board; young sheet of pot and the corresponding contact of button golden finger on the keyboard pcb board on the young sheet paster of this pot, this flexible circuit board and pot young sheet paster only are provided with in the positions of preventing taking off the contact corresponding to all and just are beneficial to the perforate that conductive rubber passes through.
2, the protective device of keyboard circuit according to claim 1 is characterized in that: the two-sided gum of the young sheet paster of pot, the young sheet paster upper and lower surface of pot sticks together with flexible circuit board and keyboard pcb board respectively by gum.
3, the protective device of keyboard circuit according to claim 1 is characterized in that: described flexible circuit board comprises at least 2 layers of wiring board, and every layer of wiring board all is covered with the protection cabling, and the protection cabling is 1 road or 2 road signals.
4, the protective device of keyboard circuit according to claim 3 is characterized in that: the protection cabling of every layer of wiring board of described flexible circuit board is 2 road signals, and this 2 tunnel signal lead is parallel adjacent, and live width is the same with the distance between centers of tracks size.
5, according to the protective device of claim 3 or 4 described keyboard circuits; it is characterized in that: described flexible circuit board comprises that one prolongs lead-in wire; this prolongation lead-in wire is located at the edge of flexible circuit board; its end is provided with connection pads; and this connection pads is located on the wiring underlayer plate of described flexible circuit board; described prolongation lead-in wire is by in the default perforate in the edge of keyboard pcb board, connection pads reached in the safety zone of keyboard pcb board below with protection cabling on the keyboard pcb board to be connected.
6, according to the protective device of claim 3 or 4 described keyboard circuits; it is characterized in that: the wiring underlayer plate of described flexible circuit board is provided with a connection pads; position in keyboard pcb board top layer correspondence also is provided with a connection pads, is fixed on structural column on the described machine shell by one again and described two connection pads is compressed the protection cabling that makes on the flexible circuit board and be connected with protection cabling on the keyboard pcb board.
7, according to the protective device of claim 3 or 4 described keyboard circuits; it is characterized in that: 4 diagonal positions are provided with the golden finger pad on the described flexible circuit board wiring underlayer plate; on the keyboard pcb board position that should the golden finger pad is provided with and anti-ly takes off the contact, on the machine shell to should the golden finger pad and anti-ly take off contact position and then be provided with structural column.
8, the protective device of keyboard circuit according to claim 1; it is characterized in that: the button golden finger on the described keyboard pcb board comprises the inner ring and the outer ring of notconnect state; the young sheet of pot on the young sheet paster of described pot and the outer ring of this button golden finger are in normal contact condition, and are in very contact condition with inner ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201460252U CN201294178Y (en) | 2008-10-28 | 2008-10-28 | Protection device for keyboard circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201460252U CN201294178Y (en) | 2008-10-28 | 2008-10-28 | Protection device for keyboard circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201294178Y true CN201294178Y (en) | 2009-08-19 |
Family
ID=41007661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201460252U Expired - Fee Related CN201294178Y (en) | 2008-10-28 | 2008-10-28 | Protection device for keyboard circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201294178Y (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937589A (en) * | 2010-08-20 | 2011-01-05 | 广州广电运通金融电子股份有限公司 | Anti-prying encryption keyboard |
| CN102543537A (en) * | 2012-02-13 | 2012-07-04 | 福建联迪商用设备有限公司 | Metal keyboard with anti-disassembly contact point |
| WO2014000355A1 (en) * | 2012-06-29 | 2014-01-03 | 百富计算机技术（深圳）有限公司 | Keyboard safety protection device |
| CN103617908A (en) * | 2013-11-15 | 2014-03-05 | 福建鑫诺通讯技术有限公司 | Keyboard safe protecting device and method of payment terminal |
| CN103942877A (en) * | 2014-03-07 | 2014-07-23 | 东方通信股份有限公司 | ATM user keyboard with good safety |
| CN104201028A (en) * | 2014-09-30 | 2014-12-10 | 太阳神(珠海)电子有限公司 | Membrane key structure with security and confidentiality functions and membrane keyboard |
| CN104465185A (en) * | 2014-11-19 | 2015-03-25 | 深圳长城开发科技股份有限公司 | Keyboard cover keyboard protection device |
| CN104537761A (en) * | 2015-01-06 | 2015-04-22 | 广州御银科技股份有限公司 | Code keyboard with multilayer safety protection mechanism |
| CN105304386A (en) * | 2015-10-29 | 2016-02-03 | 福建新大陆支付技术有限公司 | Metal keyboard with anti-disassembly contact, and installation method thereof |
| CN105304383A (en) * | 2015-11-11 | 2016-02-03 | 福建新大陆支付技术有限公司 | Liquid crystal keyboard security protection method and structure of financial payment device |
| CN105956497A (en) * | 2016-04-25 | 2016-09-21 | 福建新大陆支付技术有限公司 | Safety anti-dismounting method for financial electronic device and structure thereof |
| CN106910302A (en) * | 2017-04-11 | 2017-06-30 | 恒鸿达科技有限公司 | A kind of POS |
| CN107093267A (en) * | 2017-03-31 | 2017-08-25 | 深圳怡化电脑股份有限公司 | Code keypad, financial self-service equipment and key theft preventing method |
| CN107533785A (en) * | 2015-04-21 | 2018-01-02 | 惠尔丰公司 | The point of sales terminal of security enhancing |
| CN108521711A (en) * | 2018-05-29 | 2018-09-11 | 福建升腾资讯有限公司 | A kind of through-hole pcb board secure line via protection structure and method |
-
2008
- 2008-10-28 CN CNU2008201460252U patent/CN201294178Y/en not_active Expired - Fee Related
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937589B (en) * | 2010-08-20 | 2012-10-03 | 广州广电运通金融电子股份有限公司 | Anti-prying encryption keyboard |
| CN101937589A (en) * | 2010-08-20 | 2011-01-05 | 广州广电运通金融电子股份有限公司 | Anti-prying encryption keyboard |
| US9191207B2 (en) | 2010-08-20 | 2015-11-17 | Grg Banking Equipment Co., Ltd. | Anti-spying encrypted keyboard |
| CN102543537B (en) * | 2012-02-13 | 2014-07-30 | 福建联迪商用设备有限公司 | Metal keyboard with anti-disassembly contact point |
| CN102543537A (en) * | 2012-02-13 | 2012-07-04 | 福建联迪商用设备有限公司 | Metal keyboard with anti-disassembly contact point |
| WO2014000355A1 (en) * | 2012-06-29 | 2014-01-03 | 百富计算机技术（深圳）有限公司 | Keyboard safety protection device |
| CN103617908A (en) * | 2013-11-15 | 2014-03-05 | 福建鑫诺通讯技术有限公司 | Keyboard safe protecting device and method of payment terminal |
| CN103617908B (en) * | 2013-11-15 | 2015-11-04 | 福建鑫诺通讯技术有限公司 | The keyboard safety protection device of payment terminal and method |
| CN103942877A (en) * | 2014-03-07 | 2014-07-23 | 东方通信股份有限公司 | ATM user keyboard with good safety |
| CN103942877B (en) * | 2014-03-07 | 2016-07-06 | 东方通信股份有限公司 | ATM user's keyboard |
| CN104201028A (en) * | 2014-09-30 | 2014-12-10 | 太阳神(珠海)电子有限公司 | Membrane key structure with security and confidentiality functions and membrane keyboard |
| CN104201028B (en) * | 2014-09-30 | 2019-05-07 | 太阳神(珠海)电子有限公司 | A kind of film press-key structure and membrane keyboard with security confidentiality function |
| CN104465185A (en) * | 2014-11-19 | 2015-03-25 | 深圳长城开发科技股份有限公司 | Keyboard cover keyboard protection device |
| CN104537761A (en) * | 2015-01-06 | 2015-04-22 | 广州御银科技股份有限公司 | Code keyboard with multilayer safety protection mechanism |
| CN104537761B (en) * | 2015-01-06 | 2017-06-16 | 广州御银科技股份有限公司 | A kind of code keypad with multi-level safety protection mechanism |
| CN107533785A (en) * | 2015-04-21 | 2018-01-02 | 惠尔丰公司 | The point of sales terminal of security enhancing |
| CN105304386A (en) * | 2015-10-29 | 2016-02-03 | 福建新大陆支付技术有限公司 | Metal keyboard with anti-disassembly contact, and installation method thereof |
| CN105304386B (en) * | 2015-10-29 | 2017-07-18 | 福建新大陆支付技术有限公司 | Metal keyboard and its installation method with tamper contact |
| CN105304383A (en) * | 2015-11-11 | 2016-02-03 | 福建新大陆支付技术有限公司 | Liquid crystal keyboard security protection method and structure of financial payment device |
| CN105956497A (en) * | 2016-04-25 | 2016-09-21 | 福建新大陆支付技术有限公司 | Safety anti-dismounting method for financial electronic device and structure thereof |
| CN107093267A (en) * | 2017-03-31 | 2017-08-25 | 深圳怡化电脑股份有限公司 | Code keypad, financial self-service equipment and key theft preventing method |
| CN107093267B (en) * | 2017-03-31 | 2024-02-02 | 深圳怡化电脑股份有限公司 | Cipher keyboard, financial self-service equipment and key anti-theft method |
| CN106910302A (en) * | 2017-04-11 | 2017-06-30 | 恒鸿达科技有限公司 | A kind of POS |
| CN108521711A (en) * | 2018-05-29 | 2018-09-11 | 福建升腾资讯有限公司 | A kind of through-hole pcb board secure line via protection structure and method |
| CN108521711B (en) * | 2018-05-29 | 2023-07-25 | 福建升腾资讯有限公司 | Through hole protection structure and method for safety circuit of through hole PCB |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20090819 Termination date: 20171028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |