CN204598460U - A kind of PCB fence for electronic device protection - Google Patents
A kind of PCB fence for electronic device protection Download PDFInfo
- Publication number
- CN204598460U CN204598460U CN201520313329.3U CN201520313329U CN204598460U CN 204598460 U CN204598460 U CN 204598460U CN 201520313329 U CN201520313329 U CN 201520313329U CN 204598460 U CN204598460 U CN 204598460U
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- electronic device
- pcb
- fence
- containing cavity
- board
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Abstract
The utility model discloses a kind of PCB fence for electronic device protection, described PCB fence comprises a multi-layer PCB board, is provided with the containing cavity holding protected electronic device bottom this pcb board; Pcb board top internal layer is provided with the metal M esh stratum reticulare for protecting electronic device, the sidewall bottom end of containing cavity is provided with the articulamentum for being welded and fixed with the external circuit board, described articulamentum lower surface place is provided with pad, pad is provided with contact, the through hole lead of contact on sidewall, be connected with metal M esh stratum reticulare in pcb board, the side of pad upper contact encloses to protect metal tape; Described PCB fence is fixed on the external circuit board through scolding tin, the pad upper contact of PCB fence with the external circuit board is responsible for attack the circuit module detected and is connected.The utility model, while protection electronic device is attacked from stealing secret information, does not affect dissipation from electronic devices.
Description
Technical field
The utility model relates to a kind of protection field of electronic circuit, especially a kind of PCB fence for electronic device protection.
Background technology
The extensive use in financial transaction of current electronic product; the equipment relating to man-machine interaction in transaction is also increasing; Primary Component (as CPU etc.) as the pcb board of equipment related to information security is implanted by malicious attacker equipment of stealing secret information; or circuit is distorted in implantation; then when client inputs password on human-computer interaction device; its password will be stolen by victim; therefore; how to protect the safety of the upper Primary Component of pcb board; making it not by malicious attack, is a research direction of pcb board designing for manufacturing.
In current pcb board design; usual PCB fence is protected responsive circuit, but some electronic device such as CPU is the components and parts that in circuit, caloric value is larger, and common PCB fence is totally-enclosed mode; as totally-enclosed PCB fence is used for CPU, easily make CPU overheated and detonator circuit fault.
Summary of the invention
The utility model proposes a kind of PCB fence for electronic device protection, thief-proof privacy protection can carried out to electronic device device, and ensure that the heat radiation of electronic device.
The utility model adopts following scheme.
For a PCB fence for electronic device protection, described PCB fence comprises a multi-layer PCB board, is provided with the containing cavity holding protected electronic device bottom this pcb board; Pcb board top internal layer is provided with the metal M esh stratum reticulare for protecting electronic device, the sidewall bottom end of containing cavity is provided with the articulamentum for being welded and fixed with the external circuit board, described articulamentum lower surface place is provided with pad, pad is provided with contact, the through hole lead of contact on sidewall, be connected with metal M esh stratum reticulare in pcb board, the side of pad upper contact encloses to protect metal tape; Described PCB fence is fixed on the external circuit board through scolding tin, the pad upper contact of PCB fence with the external circuit board is responsible for attack the circuit module detected and is connected.
Described protection metal tape with the external circuit board is responsible for attack the circuit module detected and be connected.
The space that supplied for electronic device dispels the heat is left between PCB fence and electronic device.
Described shielded electronic device is the electronic device of high power consumption, comprises CPU.
Described its number of plies of metal M esh stratum reticulare is more than layer.
Described containing cavity is the groove of a rectangular cross section, and groove end to end two ends is not closed.
When described protected electronic device is the device without the need to heat dissipation design, described containing cavity wall is closed.
Described pcb board place forms the rectangular cross section groove of containing cavity, and it is overlooked to being in-line or concave shape, and described protected electronic device is positioned at the stage casing of groove.
PCB fence designed by the utility model, covers shielded electronic device by arranging containing cavity at pcb board, be provided with metal M esh stratum reticulare, and PCB fence is fixed on circuit board with scolding tin in pcb board, makes assailant be difficult to touch electronic device easily.
Metal M esh stratum reticulare in PCB fence described in the utility model is connected with the contact arranged bottom fence, and contact with the external circuit board is responsible for attack the circuit module detected and be connected, when the wire netting in PCB fence such as punched, the Subversive attack such as puncture time, its electrical characteristics will change, when the responsible circuit module attacking detecting detects this change, can think that electronic device is under attack, thus take appropriate measures, such as cut off electronics etc., external attacker cannot be stolen secret information from electronic device.
The contact of PCB fence described in the utility model is located on pad, its side encloses to protect metal tape, protection metal tape is attacked the circuit module detected be connected with responsible on the external circuit board, when assailant attempts to carry out puncture attack to shield warning function to contact, can be stopped by protection metal tape, cause the electrical property change of protection metal tape, when the responsible circuit module attacking detecting detects this change, can think that electronic device is under attack, thus take appropriate measures, such as cut off electronics etc., external attacker cannot be stolen secret information from electronic device.
Leave the space that supplied for electronic device dispels the heat between PCB fence of the present utility model and electronic device upper surface, the heat energy dissipation in time when electronic device is worked, ensure that electronic device still has enough heat-dissipating spaces overheated to prevent after installation PCB fence.
When described protected electronic device is the device without the need to heat dissipation design, described containing cavity wall is closed, and this just simplifies the design of containing cavity on pcb board for such devices, is conducive to saving cost, and also provide enhanced device protection.
Described pcb board (3) place forms the rectangular cross section groove of containing cavity; it overlooks to being in-line or concave shape; described protected electronic device is positioned at the stage casing of groove; when needing all to protect the surrounding pin of electronic device; the containing cavity of concave shape can be used; electronic device is placed in the stage casing of containing cavity; heat dissipation channel due to concave shape containing cavity is the both sides extension of concave shape; it has square to bend; this makes assailant be difficult to directtissima electronic device, and the work calories of electronic device also can shed through the heat dissipation channel of concave shape containing cavity in time.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Accompanying drawing 1 be product described in the utility model look up cut-away illustration;
Accompanying drawing 2 is front cut-away illustration of product described in the utility model;
Elevational schematic view when accompanying drawing 3 is product described in the utility model use concave shape containing cavities.
Embodiment
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of PCB fence for electronic device protection, described PCB fence comprises a multi-layer PCB board 3, is provided with the containing cavity 10 holding protected electronic device 6 bottom this pcb board 3; Pcb board 3 top internal layer is provided with the metal M esh stratum reticulare 4 for protecting electronic device 6, the sidewall 5 bottom end face place of containing cavity 10 is provided with the articulamentum for being welded and fixed with the external circuit board 7, described articulamentum lower surface place is provided with pad, pad is provided with contact 2, through hole 8 lead 9 of contact 2 on sidewall 5, be connected with metal M esh stratum reticulare 4 in pcb board 3, the side of pad upper contact 2 encloses to protect metal tape 1; Described PCB fence is fixed on the external circuit board 7 through scolding tin, the pad upper contact 2 of PCB fence with the external circuit board is responsible for attack the circuit module detected and is connected.
Described protection metal tape 1 with the external circuit board is responsible for attack the circuit module detected and be connected.
The space that supplied for electronic device 6 dispels the heat is left between PCB fence and electronic device 6.
Described shielded electronic device 6 is the electronic device of high power consumption, comprises CPU.
Described its number of plies of metal M esh stratum reticulare 4 is more than 1 layer.
Described containing cavity 10 is the groove of a rectangular cross section, and groove end to end two ends is not closed.
When described protected electronic device 6 is the device without the need to heat dissipation design, described containing cavity 10 wall is closed.
Described pcb board 3 place forms the rectangular cross section groove of containing cavity 10, and it is overlooked to being in-line or concave shape, and described protected electronic device 6 is positioned at the stage casing of groove.
Embodiment 1:
Described PCB fence is fixed on the external circuit board 7 through scolding tin, be buckled on the electronic device 6 device place of external circuit, this electronic device 6 is CPU, when assailant attempts to take off lid to steal secret information to it, can stop by pcb board 3, when assailant attempt violence break pcb board 3 time, metal M esh stratum reticulare 4 in plate will be destroyed, the electrical characteristics of metal M esh stratum reticulare 4 are changed, when on external circuit, the responsible circuit module attacking detecting detects this change by contact 2, think that electronic device 6 is under attack, cut off the power supply of electronic device 6, electronic device 6 quits work, assailant cannot steal secret information from electronic device 6, even if circuit is restarted, as long as the electrical characteristics of metal M esh stratum reticulare 4 are in normal condition not yet, the circuit module then external circuit being responsible for attacking detecting still can detect abnormal herein by contact 2, refusal recovers the power supply of electronic device 6, electronic device 6 cannot work, make assailant cannot carry out from electronic device 6 attack of stealing secret information.
Embodiment 2:
When assailant attempts to carry out puncture attack to shield this product warning function to contact 2, due to this product be cover on the electronic devices, electronic device is positioned at fence central authorities, therefore assailant can only puncture from fence side, and contact 2 side is with protection metal tape 1, therefore the puncture behavior of assailant can be stopped by protection metal tape 1, and then cause the electrical characteristics of protection metal tape 1 to change, and protect metal tape 1 and the external circuit board is responsible for attack the circuit module detected and be connected, when on external circuit, the responsible circuit module attacking detecting detects this change, think that electronic device 6 is under attack, cut off the power supply of electronic device 6, electronic device 6 quits work, assailant cannot steal secret information from electronic device 6.
Embodiment 3:
As shown in Figure 3; when the surrounding pin of electronic device 6 all needs protection; and electronic device 6 is when being the device of golf calorific value; this product uses the containing cavity 10 of concave shape; electronic device 6 is placed in the stage casing of containing cavity 10; the both sides extension of concave shape containing cavity 10 is heat dissipation channel 11; heat when electronic device 6 is worked is emitted to outside by air heat exchange; and have square to turn round due to heat dissipation channel 11; and electronic device 6 top is covered by the pcb board of fence; external attacker is difficult to the pin observing and touch electronic device 6, attacks and is difficult to carry out.
Claims (8)
1. for a PCB fence for electronic device protection, it is characterized in that: described PCB fence comprises a multi-layer PCB board (3), this pcb board (3) bottom is provided with the containing cavity (10) holding protected electronic device (6); Pcb board (3) top internal layer is provided with the metal M esh stratum reticulare (4) for protecting electronic device (6), sidewall (5) the bottom end face place of containing cavity (10) is provided with the articulamentum for being welded and fixed with the external circuit board (7), described articulamentum lower surface place is provided with pad, pad is provided with contact (2), through hole (8) lead (9) of contact (2) on sidewall (5), be connected with the interior metal M esh stratum reticulare (4) of pcb board (3), the side of pad upper contact (2) encloses to protect metal tape (1); Described PCB fence is fixed on the external circuit board (7) through scolding tin, the pad upper contact (2) of PCB fence with the external circuit board is responsible for attack the circuit module detected and is connected.
2. a kind of PCB fence for electronic device protection according to claim 1, is characterized in that: described protection metal tape (1) is attacked the circuit module detected be connected with responsible on the external circuit board.
3. a kind of PCB fence for electronic device protection according to claim 1, is characterized in that: leave the space that supplied for electronic device (6) dispels the heat between PCB fence and electronic device (6).
4. a kind of PCB fence for electronic device protection according to claim 1, is characterized in that: described shielded electronic device (6) is the electronic device of high power consumption, comprises CPU.
5. a kind of PCB fence for electronic device protection according to claim 1, is characterized in that: described its number of plies of metal M esh stratum reticulare (4) is more than 1 layer.
6. a kind of PCB fence for electronic device protection according to claim 1, is characterized in that: described containing cavity (10) is the groove of a rectangular cross section, and groove end to end two ends is not closed.
7. a kind of PCB fence for electronic device protection according to claim 1 or 6, it is characterized in that: when described protected electronic device (6) is the device without the need to heat dissipation design, described containing cavity (10) wall is closed.
8. a kind of PCB fence for electronic device protection according to claim 1 or 6; it is characterized in that: described pcb board (3) place forms the rectangular cross section groove of containing cavity (10); it is overlooked to being in-line or concave shape, and described protected electronic device (6) is positioned at the stage casing of groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520313329.3U CN204598460U (en) | 2015-05-15 | 2015-05-15 | A kind of PCB fence for electronic device protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520313329.3U CN204598460U (en) | 2015-05-15 | 2015-05-15 | A kind of PCB fence for electronic device protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204598460U true CN204598460U (en) | 2015-08-26 |
Family
ID=53934563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520313329.3U Active CN204598460U (en) | 2015-05-15 | 2015-05-15 | A kind of PCB fence for electronic device protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204598460U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654632A (en) * | 2015-12-29 | 2016-06-08 | 福建联迪商用设备有限公司 | Button protection structure and POS terminal |
-
2015
- 2015-05-15 CN CN201520313329.3U patent/CN204598460U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654632A (en) * | 2015-12-29 | 2016-06-08 | 福建联迪商用设备有限公司 | Button protection structure and POS terminal |
| CN105654632B (en) * | 2015-12-29 | 2018-10-09 | 福建联迪商用设备有限公司 | Massage protection architecture and POS machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |