CN202772021U - Keyboard safety protection device - Google Patents
Keyboard safety protection device Download PDFInfo
- Publication number
- CN202772021U CN202772021U CN 201220316321 CN201220316321U CN202772021U CN 202772021 U CN202772021 U CN 202772021U CN 201220316321 CN201220316321 CN 201220316321 CN 201220316321 U CN201220316321 U CN 201220316321U CN 202772021 U CN202772021 U CN 202772021U
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- contact
- keyboard
- electrically connected
- protective layer
- button
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Abstract
The utility model is suitable to be used in the field of safety protection of electronic equipment, and provides a keyboard safety protection device to protect a keyboard area of a POS machine from attack. The keyboard safety protection device comprises a protective layer, a metal dome, and a keyboard PCB plate. The keyboard PCB plate is provided with key golden fingers and a security processor. The protective layer comprises a PVDF film, and a first silver paste body and a second silver paste body covered on a surface of the PVDF film. Surfaces of the first silver paste body and the second silver paste body are provided with a first thin layer and a second thin layer. The first silver paste body and the second silver paste body are electrically connected with the key golden fingers, and are electrically connected with the security processor through the keyboard PCB plate to form a security detection circuit. An objective of the utility model is solve a problem that sensitive data information of electronic circuits is stolen, and the keyboard safety protection device which has comprehensive protection and relatively long service life is provided.
Description
Technical field:
The utility model belongs to the safeguard protection field of electronic equipment, more particularly, relates to the keyboard safety guard that a kind of POS of protection switch disk area is immune against attacks.
Background technology:
Now; the electronic equipments such as the POS machine in the financial field, code keypad, ATM; keyboard is as the input data information part; some hypersensitivity data messages of its input or storage; usurped by attack in the situation of the without permission license of being everlasting such as bank information, password, registration code etc.; therefore, the protection of these data also is subject to more and more higher attention, various forms of keyboard protection arrangements and method constantly occur.
The protection to Whole Equipment generally all is devoted in the protection of common keyboard, especially to the protection of shell Anti-dismantling.Normally at the keyboard pcb board the anti-contact of taking off is set, conducting resinl is pressed on anti-taking off on the contact by machine shell, makes the anti-testing circuit conducting of taking off.If the assailant attempts to open machine shell when attacking keyboard, just conducting resinl is taken off the contact and unclamped with anti-, cause and anti-ly take off testing circuit and open circuit, thereby trigger associated safety mechanism to wipe the hypersensitivity data message of its storage inside.But this guard method is meticulous not, and the assailant can be in the situation that do not touch the anti-contact of taking off, and by punching, pierce through the attack pattern such as shell, the hypersensitivity data message is attacked to obtain in the button golden finger zone on the keyboard pcb board.Also having a kind of protection scheme is to utilize a keyboard baffle that the keyboard zone is protected; as described in Chinese patent " ZL201020297100.2 "; this keyboard protection arrangement comprises keyboard; silica gel; the keyboard pcb board; cover and paste a keyboard baffle at the golden finger of keyboard pcb board; by the conducting that is electrically connected of the contact on the keyboard baffle; the keyboard baffle is take fexible film as base material; by the golden finger on the printing conductive MESH protective circuit protection keyboard pcb board; and by the anti-border of tearing layer protection golden finger on the keyboard baffle; this keyboard baffle protects for front and the border thereof in golden finger zone; when the assailant punches or opens the keyboard baffle, all can trigger associated safety mechanism to wipe the hypersensitivity data message of its storage inside.Yet, carry out the printing conductive MESH protective circuit of front side protective, its printing in twos between the cabling for the conducting of circuit, between must exist the slit or insulant is isolated, this just allows the assailant find leak to attack, and surveys the hypersensitivity data message of stealing storage in the keyboard golden finger; In addition; this protective circuit is directly to be printed on the fexible film; the pressure that keyboard is pressed acts directly on fexible film and the protective circuit, frequently or improperly operates and all easily causes the thread breakage of walking of protective circuit, thereby cause reduce the useful life of keyboard baffle.
The utility model content:
The purpose of this utility model is to overcome the deficiency of above-mentioned prior art, provide a kind of protection more comprehensively, the keyboard safety guard of longer service life.
In order to realize above-mentioned utility model purpose, the utility model has adopted following technical scheme:
A kind of keyboard safety guard; comprise protective layer, the young sheet of pot, keyboard pcb board; described keyboard pcb board is provided with button golden finger and safe processor; described protective layer is comprised of one deck pvdf membrane and first, second the silver-colored slurry that is covered in described pvdf membrane surface; and described first, second silver-colored slurry surface is provided with first, second thin layer; described first, second silver-colored slurry is electrically connected with described button golden finger, and is electrically connected formation safety detection circuit with described safe processor by described keyboard pcb board.
Described the first silver medal slurry is provided with the first contact, and described the second silver medal slurry is provided with the second contact, the 3rd contact, and described the first contact is passed described pvdf membrane and is electrically connected with described the second contact, is provided with isolation channel between described the second silver medal slurry and described the second contact.
Described the second contact, the 3rd contact are electrically connected with described button golden finger, and described button golden finger is provided with and is beneficial to the conductive particle that is electrically connected with described the second contact, the 3rd contact.
Be equipped with on described the second thin layer and the young sheet of described pot and be beneficial to the perforate that described the second contact, the 3rd contact are electrically connected.
The height of described conductive particle is less than the height of the young sheet of described pot.
Described protective layer is provided with a silica gel push-button, and second, third place, contact on the corresponding described protective layer in described silica gel push-button bottom is provided with the pressurization projection.
The utility model has following advantage with respect to prior art after adopting technique scheme:
First; the utility model keyboard safety guard comprises protective layer, the young sheet of pot, keyboard pcb board and safe processor; protective layer covers on the button golden finger that the keyboard pcb board is provided with and with it and is electrically connected; the silver-colored slurry of first, second of protective layer is electrically connected with button golden finger, safe processor; the safety detection circuit that forms cover type gets up the locality protection of button golden finger; therefore; the external world can't see through protective device and survey or monitor button golden finger internal circuit, thereby obtains the hypersensitivity data message in the key area.
Second, this keyboard safety guard also comprises a silica gel push-button, second, third place, contact on the corresponding protective layer in silica gel push-button bottom is provided with the pressurization projection, this pressurization projection can be guaranteed the conducting that is electrically connected of second, third contact and conductive particle, make its electric connection structure more stable, and simple in structure; When the assailant illegally takes silica gel push-button apart, the disconnection that is electrically connected of second, third contact and conductive particle, the safety detection electric circuit inspection is less than the I/O of signal, thereby the triggering security mechanism is wiped the hypersensitivity data message in the key area, therefore, this structure has played again the safe effect of tamper.
The 3rd, protective layer is take pvdf membrane as base material, and the soft but characteristic of do not miss a chance tool intensity and toughness of this pvdf membrane is so that greatly increase in the physical protection of protective layer and useful life; The silver-colored slurry coating of on the protective layer first, second can prevent from again walking the problem such as thread breakage because of what frequently or improperly operation caused protective circuit, has further increased the useful life of protective layer; And the insulation that outer surface is provided with, dustproof, waterproofing membrane layer have not only further promoted the useful life of protective layer, but also have increased the use function of protective layer.
Description of drawings:
Fig. 1 is the utility model keyboard safety guard STRUCTURE DECOMPOSITION schematic diagram;
Fig. 2 is the utility model protective layer structure cross-sectional schematic;
Fig. 3 is the utility model the first film layer structural representation;
Fig. 4 is the utility model the first silver medal paste structure schematic diagram;
Fig. 5 is the utility model pvdf membrane structural representation;
Fig. 6 is the utility model the second silver medal paste structure schematic diagram;
Fig. 7 is the utility model the second film layer structure schematic diagram;
Fig. 8 is the utility model keyboard safety guard sectional structure schematic diagram;
Fig. 9 is the utility model keyboard pcb board structural representation;
Figure 10 is the utility model A-A place structure enlarged diagram;
Figure 11 is the young chip architecture schematic diagram of the utility model pot.
1 protective layer; 2 pots of young sheets; 3 keyboard pcb boards; 4 button golden fingers; 5 safe processors; 6 silica gel push-buttons; 7 perforates; The 11PVDF film; 12 first silver medal slurries; 13 second silver medal slurries; 14 the first film layers; 15 second thin layers; 120 first contacts; 130 second contacts; 140 the 3rd contacts; 150 isolation channels; 40 conductive particles; 60 pressurization projections.
Embodiment:
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Referring to Fig. 1 and Fig. 2, the keyboard safety guard comprises protective layer 1, the young sheet 2 of pot and keyboard pcb board 3, described keyboard pcb board 3 is provided with button golden finger 4 and safe processor 5, described protective layer 1 is comprised of one deck pvdf membrane 11 and first, second the silver- colored slurry 12,13 that is covered in pvdf membrane 11 surfaces, soft but the characteristic of do not miss a chance tool intensity and toughness of its pvdf membrane 11 is so that greatly increase in the physical protection of protective layer 1 and useful life; The silver-colored slurry 12 of on the protective layer 1 first, second, 13 coatings can prevent from again walking the problem such as thread breakage because of what frequently or improperly operation caused protective circuit, have further increased the useful life of protective layer 1; And first, second thin layer 14,15 of the insulation that outer surface is provided with, dustproof, waterproof has not only further promoted the useful life of protective layer 1, but also has increased the safeguard function of protective layer 1.Described first, second silver- colored slurry 12,13 is electrically connected with button golden finger 4, and is electrically connected formation safety detection circuit, first, second silver- colored slurry 12,13 input layer or monitor layers as security mechanism with safe processor 5 by keyboard pcb board 3.This safety detection circuit is two circuit loops, and safe processor 5 is electrically connected with the first silver medal slurry 12 by button golden finger 4 and forms first signal detection loop; Safe processor 5 is electrically connected with the second silver medal slurry 13 by button golden finger 4 and forms secondary signal detection loop; when the assailant destroys or pierces through protective layer 1; pvdf membrane 11 is destroyed; first, second silver- colored slurry 12,13 conductings; cause first signal detection loop and secondary signal to detect the loop and short circuit occurs, thereby the security mechanism of triggering safe processor 5 is to wipe or to destroy the hypersensitivity data message in the key zone.
Described the first silver medal slurry 12 is provided with the first contact 120, described the second silver medal slurry 13 is provided with the second contact 130, the 3rd contact 140, the first contact 120 is passed pvdf membrane 11 and is electrically connected with the second contact 130, be provided with isolation channel 150 between the second silver medal slurry 13 and the second contact 130, make between the first silver medal slurry 12 and the second silver medal slurry 13 not to be electrically connected, form two input loops as two signals layers of safe processor 5.
Described the second contact 130, the 3rd contact 140 are electrically connected with button golden finger 4, and button golden finger 4 must be electrically connected with safe processor 5 as input or storage hypersensitivity data message part; Described button golden finger 4 is provided with and is beneficial to the conductive particle 40 that is electrically connected with the second contact 130, the 3rd contact 140; this second contact 130, the 3rd contact 140 can directly be electrically connected with button golden finger 4 itself; but because being provided with the young sheet 2 of pot between protective layer 1 and the keyboard pcb board 3; the conducting that is electrically connected of protective layer 1 and button golden finger 4; just need press pressure to increase; protective layer 1 is out of shape downwards, can prevents protective layer 1 because damaging by compressive strain is excessive therefore set up this conductive particle 40, cause reduce useful life.
Described the second thin layer 15 and pot are equipped with on the young sheet 2 and are beneficial to the perforate 7 that the second contact 130, the 3rd contact 140 are electrically connected; be convenient to the second contact 130, the 3rd contact 140 is connected with the beeline of button golden finger 4; and can make the second contact 130, the 3rd contact 140 in the projection of protective layer 1, be convenient to protected and safer.
Described protective layer 1 is provided with a silica gel push-button 6, the second contact 130,140 places, the 3rd contact on the corresponding protective layer 1 in these silica gel push-button 6 bottoms are provided with pressurization projection 60, this pressurization projection 60 is used for withstanding protective layer 1, guarantee that the second contact 130, the 3rd contact 140 are electrically connected conducting with button golden finger 4, make its electric connection structure more stable, and simple in structure; And the height of described conductive particle 40 cooperates the pressurization projection 60 of silica gel push-button 6 less than the height design of the young sheet 2 of pot, makes this structure play again the safe effect of tamper.When the assailant illegally takes silica gel push-button 6 apart; the pressure-acting of 60 pairs of protective layers 1 of pressurization projection disappears; second, third contact 130,140 with the disconnection that is electrically connected of conductive particle 40; opening circuit appears in the I/O detection signal that safe processor 5 sends, thereby triggers security mechanism to wipe the hypersensitivity data message in the key zone.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (6)
1. a keyboard safety guard comprises protective layer (1), pot young sheet (2), keyboard pcb board (3), and described keyboard pcb board (3) is provided with button golden finger (4) and safe processor
(5); it is characterized in that: described protective layer (1) is comprised of one deck pvdf membrane (11) and first, second silver-colored slurry (12,13) of being covered in described pvdf membrane (11) surface; and described first, second silver-colored slurry (12,13) surface is provided with first, second thin layer (14,15); described first, second silver-colored slurry (12,13) is electrically connected with described button golden finger (4), and is electrically connected formation safety detection circuit with described safe processor (5) by described keyboard pcb board (3).
2. keyboard safety guard according to claim 1; it is characterized in that: described the first silver medal slurry (12) is provided with the first contact (120); described the second silver medal slurry (13) is provided with the second contact (130), the 3rd contact (140); described the first contact (120) is passed described pvdf membrane (11) and is electrically connected with described the second contact (130), is provided with isolation channel (150) between described the second silver medal slurry (13) and described the second contact (130).
3. keyboard safety guard according to claim 2; it is characterized in that: described the second contact (130), the 3rd contact (140) are electrically connected with described button golden finger (4), and described button golden finger (4) is provided with and is beneficial to the conductive particle (40) that is electrically connected with described the second contact (130), the 3rd contact (140).
4. keyboard safety guard according to claim 3 is characterized in that: be equipped with on described the second thin layer (15) and the described young sheet of pot (2) and be beneficial to the perforate (7) that described the second contact (130), the 3rd contact (140) are electrically connected.
5. keyboard safety guard according to claim 4 is characterized in that: the height of described conductive particle (40) is less than the height of the described young sheet of pot (2).
6. the described keyboard safety guard of any one in 5 according to claim 1; it is characterized in that: described protective layer (1) is provided with a silica gel push-button (6), and pressurization projection (60) is located to be provided with in second, third contact (130,140) on described silica gel push-button (6) the corresponding described protective layer in bottom (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220316321 CN202772021U (en) | 2012-06-29 | 2012-06-29 | Keyboard safety protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220316321 CN202772021U (en) | 2012-06-29 | 2012-06-29 | Keyboard safety protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202772021U true CN202772021U (en) | 2013-03-06 |
Family
ID=47778574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220316321 Expired - Fee Related CN202772021U (en) | 2012-06-29 | 2012-06-29 | Keyboard safety protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202772021U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779677A (en) * | 2012-06-29 | 2012-11-14 | 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 |
| WO2015043130A1 (en) * | 2013-09-30 | 2015-04-02 | 福建联迪商用设备有限公司 | Pos machine, and method and apparatuses for protecting sensitive data in pos machine |
-
2012
- 2012-06-29 CN CN 201220316321 patent/CN202772021U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779677A (en) * | 2012-06-29 | 2012-11-14 | 百富计算机技术（深圳）有限公司 | Keyboard safety protection device |
| 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 |
| CN102779677B (en) * | 2012-06-29 | 2014-12-31 | 百富计算机技术（深圳）有限公司 | Keyboard safety protection device |
| WO2015043130A1 (en) * | 2013-09-30 | 2015-04-02 | 福建联迪商用设备有限公司 | Pos machine, and method and apparatuses for protecting sensitive data in pos machine |
| 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 |
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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: 20130306 Termination date: 20150629 |
|
| EXPY | Termination of patent right or utility model |