CN209216220U - Safety detection switch - Google Patents
Safety detection switch Download PDFInfo
- Publication number
- CN209216220U CN209216220U CN201821787639.9U CN201821787639U CN209216220U CN 209216220 U CN209216220 U CN 209216220U CN 201821787639 U CN201821787639 U CN 201821787639U CN 209216220 U CN209216220 U CN 209216220U
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- Prior art keywords
- pad
- detection
- detection signal
- signal pad
- tamper
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Abstract
The utility model provides a kind of safety detection switch, comprising: external plastic housing, tamper detection body, POS machine mainboard, detection signal pad and signal via；The tamper detection body is set between the external plastic housing and the detection signal pad, and tamper detection body is for compressing the detection signal pad；The detection signal pad is set on the POS machine mainboard, and the detection signal pad is annular pad；The signal via is set to the hollow area of the detection signal pad；The tamper detection body is ring-shaped cylinder electric conductor, which detects body and detection signal pad electrical contact is arranged.
Description
Technical field
The utility model relates to a kind of field of switches more particularly to a kind of safety detection switches applied to POS machine.
Background technique
POS is as financial transaction terminal, and criminal's refitted vehicles POS terminal equipment installs BUG in order to prevent, thus
The sensitive informations such as account data, the PIN of holder are stolen, the reliability of POS terminal itself and safety are most important.It is at present
Guarantee the safety of POS terminal equipment, safe tamper detection switch is typically provided inside POS terminal, for detection device
Whether shell is illegally opened.
Design more universal at present is, by case pres-sure, to be pressed into the safety touching of mainboard using circular conductive particle
On point, the pad of the safety contact generally left and right separates, its left and right sides pad is connected by conductive particle, once shell quilt
It removes, conductive particle will lose pressure, so that the left and right sides pad access of safety contact disconnects, equipment detects safe touching
Hair.
But above-mentioned design method has higher requirements to PCB lamination, because if PCB use ventilating hole plate, then include PIN,
The signal via of the sensitive informations such as magnetic card personal data with the short circuit of the signal pad of safety contact, is needed in safety contact in order to prevent
Space punching other than pad, will lead to these sensitive information signals cannot get the effective protection of safety contact；And if PCB is adopted
With blind buried via hole plate, although may be implemented to beat buried via hole under safety contact pad, cost is corresponding to be increased.
Utility model content
The utility model provides a kind of safety detection switch, which not only can be safe with effective protection information signal, but also
Cost can be reduced.
The utility model is realized in this way:
A kind of safety detection switch, comprising: external plastic housing, tamper detection body, POS machine mainboard, detection signal pad and letter
Number via hole；The tamper detection body is set between the external plastic housing and the detection signal pad, which detects body and use
In the compression detection signal pad；The detection signal pad is set on the POS machine mainboard, and the detection signal pad is
Annular pad；The signal via is set to the hollow area of the detection signal pad；The tamper detection body is annular circle
Column electric conductor, which detects body and detection signal pad electrical contact is arranged.
The tamper detection body includes first end face and second end face, and first end face is that pressure-bearing surface connects with the external plastic housing
Touching setting, second end face and detection signal pad electrical contact are arranged.
The tamper detection body is ring shaped conductive carbon granules.
It is provided with safety contact on the detection signal pad, when tamper detection body is pressed on detection signal pad
When, detect the safety signal conducting on signal pad.
The annulus of the detection signal pad and the annulus of tamper detection body are concentric loop.
It further comprise protection ring pad, the protection ring pad is set to the periphery of the detection signal pad, and wraps
Enclose the detection signal pad.
The protection ring pad is annular pad, which is the ring of the annular pad of opponent signal, earth signal
One of shape pad.
The beneficial effects of the utility model are: the safety detection switch is detected by using ring shaped conductive body as tamper
Body, while cooperating using annular detection signal pad, so as to the hollow area punching in annular detection signal pad, make
Signal via is located in detection signal pad, can either make the safety of POS machine to meet the requirements, and relative simplicity POS machine
Signal lead problem on mainboard saves cost.
Detailed description of the invention
It, below will be to required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore not
It should be considered as the restriction to range, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other relevant attached drawings.
Fig. 1 is the schematic cross-sectional view of safety detection switch provided by the embodiment of the utility model.
Fig. 2 is the schematic elevation view of tamper detection body provided by the embodiment of the utility model.
Fig. 3 is the schematic top plan view of tamper detection body provided by the embodiment of the utility model.
Fig. 4 is the schematic top plan view of detection signal pad provided by the embodiment of the utility model.
Main element symbology:
External plastic housing 1；
Tamper detects body 2；
POS machine mainboard 3；
Detect signal pad 4；
Protection ring pad 5；
Signal via 6.
Specific embodiment
It is practical below in conjunction with this to keep the purposes, technical schemes and advantages of the utility model embodiment clearer
The technical solution in the utility model embodiment is clearly and completely described in attached drawing in novel embodiment, shows
So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.It is practical based on this
Embodiment in novel, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment is fallen within the protection scope of the utility model.Therefore, the implementation to the utility model provided in the accompanying drawings below
The detailed description of mode is not intended to limit the range of claimed invention, but is merely representative of the utility model
Selected embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative labor
Every other embodiment obtained under the premise of dynamic, fall within the protection scope of the utility model.
Term " first ", " second " are used for description purposes only in the description of the present invention, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " are defined as a result,
Feature can explicitly or implicitly include one or more of the features.In the description of the present invention, " multiple "
It is meant that two or more, unless otherwise specifically defined.
Referring to Fig.1 shown in -4, the utility model embodiment provides a kind of safety detection switch, comprising: external plastic housing 1 is prevented
It opens and inspect and surveys body 2, POS machine mainboard 3, detection signal pad 4 and signal via 6.The tamper detection body 2 is set to the outside
Between plastic housing 1 and the detection signal pad 4, for compressing the detection signal pad 4.The detection signal pad 4 is set to
On the POS machine mainboard 3, the detection signal pad 4 is annular pad, and the signal via 6 is set to the detection signal
The hollow area of pad 4.
Specifically, the tamper detection body 2 is pressed on the detection signal pad 4 by external plastic housing 1.It is described
It is ring-shaped cylinder electric conductor that tamper, which detects body 2,.In the present embodiment, the tamper detection body 2 is ring shaped conductive carbon granules.This prevents opening and inspecting
Surveying body 2 includes first end face and second end face.First end face contacts setting with the external plastic housing 1 for pressure-bearing surface.Second end face
It is in electrical contact and is arranged with the detection signal pad 4.
The detection signal pad 4 is annular pad.Second end face and the detection signal pad in tamper detection body 2
When 4 electrical contact, contact surface is also annular contact surface.Preferably, the annulus of the detection signal pad 4 and the tamper detect body
2 annulus is concentric loop, may make detection signal pad 4 and the contact area of tamper detection body 2 big, it is ensured that electrical contact
Well.It is provided with safety contact on the detection signal pad 4, when tamper detection body 2 is pressed in detection signal pad 4
When upper, the safety signal conducting on signal pad 4 was detected, at this moment, safety detection switch is in non-triggering state.
The POS machine mainboard 3 is pcb board.The signal via 6 is set to the hollow area of the detection signal pad 4.
The signal via 6 can be the signal via of the sensitive informations such as PIN, magnetic card personal data.
Further, the safety detection switch includes protection ring pad 5, and the protection ring pad 5 is also annular pad, if
It is placed in the periphery of the detection signal pad 4, and surrounds the detection signal pad 4.The protection ring pad 5 can be to have opposition
The annular pad of signal or earth signal.
By safety detection switch in POS machine equipment, tamper detection body 2 is pressed on detection signal and welded by external plastic housing 1
On disk 4, tamper detects the signal on 2 conduction detection signal pad 4 of body.Once and equipment is illegally opened, the tamper detection general of body 2
The pressure that external plastic housing 1 applies it is lost, so that the signal path detected on signal pad 4 disconnects, safety detection switch inspection
Measure safe triggering.
Above description is merely a prefered embodiment of the utility model, is not intended to limit the utility model, for
For those skilled in the art, various modifications and changes may be made to the present invention.All spirit and original in the utility model
Within then, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of safety detection switch characterized by comprising external plastic housing, tamper detection body, POS machine mainboard, detection signal
Pad and signal via；The tamper detection body is set between the external plastic housing and the detection signal pad, the tamper
Detection body is for compressing the detection signal pad；The detection signal pad is set on the POS machine mainboard, the detection letter
Number pad is annular pad；The signal via is set to the hollow area of the detection signal pad；The tamper detects body
For ring-shaped cylinder electric conductor, which detects body and detection signal pad electrical contact is arranged.
2. safety detection according to claim 1 switch, which is characterized in that the tamper detection body include first end face and
Second end face, first end face are that pressure-bearing surface contacts setting, second end face and the detection signal pad electricity with the external plastic housing
Contact setting.
3. safety detection switch according to claim 1, which is characterized in that the tamper detection body is ring shaped conductive carbon
Grain.
4. safety detection switch according to claim 1, which is characterized in that be provided with safety on the detection signal pad
The safety signal conducting on signal pad is detected when tamper detection body is pressed on detection signal pad in contact.
5. safety detection according to claim 1 switch, which is characterized in that the annulus of the detection signal pad with it is described
The annulus that tamper detects body is concentric loop.
6. safety detection switch according to claim 1, which is characterized in that further comprise protection ring pad, the guarantor
Retaining ring pad is set to the periphery of the detection signal pad, and surrounds the detection signal pad.
7. safety detection switch according to claim 6, which is characterized in that the protection ring pad is annular pad, should
Protection ring pad is one of the annular pad of opponent signal, the annular pad of earth signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821787639.9U CN209216220U (en) | 2018-10-31 | 2018-10-31 | Safety detection switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821787639.9U CN209216220U (en) | 2018-10-31 | 2018-10-31 | Safety detection switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209216220U true CN209216220U (en) | 2019-08-06 |
Family
ID=67457790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821787639.9U Active CN209216220U (en) | 2018-10-31 | 2018-10-31 | Safety detection switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209216220U (en) |
-
2018
- 2018-10-31 CN CN201821787639.9U patent/CN209216220U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |