CN105304386B - Metal keyboard and its installation method with tamper contact - Google Patents
Metal keyboard and its installation method with tamper contact Download PDFInfo
- Publication number
- CN105304386B CN105304386B CN201510723281.8A CN201510723281A CN105304386B CN 105304386 B CN105304386 B CN 105304386B CN 201510723281 A CN201510723281 A CN 201510723281A CN 105304386 B CN105304386 B CN 105304386B
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- China
- Prior art keywords
- keypad
- silica gel
- button
- frame
- metal
- Prior art date
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
- H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/88—Processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2239/00—Miscellaneous
- H01H2239/038—Anti-vandalism
Landscapes
- Push-Button Switches (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
The present invention relates to a kind of metal keyboard and its installation method with tamper contact, including keyboard body, it is characterised in that：The keyboard body includes plastic housing surface frame and the metal key-press being located in plastic housing surface frame, silica gel push-button plate body and keypad are sequentially provided with rear side of the metal key-press, the silica gel push-button plate body surface is provided with silica gel convex button, the silica gel convex button back side has electric conductor, contactor of the electric conductor when silica gel convex button is pressed against keypad side on switch-on keying plate, the present invention is when keyboard is artificially removed from external equipment, silica gel convex button can rebound back normal condition under squeezed state, so as to cause the electric conductor below silica gel convex button to be disconnected with keypad, avoid by security attack.
Description
Technical field：
The present invention relates to a kind of metal keyboard and its installation method with tamper contact.
Background technology：
Asking for transaction security is easily produced during the unmanned non-cash transaction such as automatic vending machine, ticket machine in the market
Topic, and the keyboard of wherein those equipment is particularly susceptible to destroy or attacked.
The content of the invention：
It is an object of the invention to provide a kind of metal keyboard and its installation method with tamper contact, there should be tamper
The metal keyboard of contact is reasonable in design, is conducive to improving the safety that keyboard is used.
The present invention has the metal keyboard of tamper contact, including keyboard body, it is characterised in that：The keyboard body includes
Silica gel push-button plate body and button are sequentially provided with rear side of plastic housing surface frame and the metal key-press being located in plastic housing surface frame, the metal key-press
Plate, the silica gel push-button plate body surface is provided with silica gel convex button, and the silica gel convex button back side has electric conductor, and the electric conductor is convex in silica gel
Contactor when button is pressed against keypad side on switch-on keying plate.
Further, above-mentioned silica gel push-button plate body surface is provided with two silica gel convex buttons, and it is located at silica gel push-button plate body respectively
Surface upper and lower part position, and shift to install.
Further, above-mentioned keypad includes keypad main body and the keypad PET lines being sticked in keypad main body
Road piece（Flexible circuitry keypad）, the keypad main body is with having six line conduction points, its position on keypad PET circuit pieces
In the clearance portion of key position, the surface of silica gel push-button plate body is provided with 6 elastics corresponding with six line conduction points.
Further, above-mentioned button back is provided with mainboard, and safety island framework, institute are provided between the mainboard and keypad
Safety island framework is stated for a framework, the zebra bar for connecting circuit between mainboard and keypad, position are equipped with the framework
Conductive film is provided with the outer peripheral face of safety island framework.
Further, the front surface of above-mentioned silica gel push-button plate body is provided around the elastic boss on all edges of plate body.
Further, plastic back shell is provided with rear side of above-mentioned mainboard, the plastic back shell underframe side is provided with osculum.
Further, it is sequentially provided with surface after metal frame and foam piece, the metal frame on front side of above-mentioned plastic housing surface frame
Screw is welded with, the screw passes through plastic housing surface frame, silica gel push-button plate body, keypad and metal back frame, and is locked with screw thread copper post
Tightly.
Further, above-mentioned plastic housing surface frame, silica gel push-button plate body, keypad and metal back frame, mainboard, which are provided with, is used to pacify
Fill and be provided with I O board and USB interface on rear side of the perforation of safety glass and liquid crystal display, the mainboard.
The present invention has the installation method of tamper contact metal keyboard, it is characterised in that：Installation steps are as follows：
1）Foam piece 1 is attached to the surface of plastic housing surface frame 3, safety glass 5 by 3M glue bonds in plastic housing surface frame 3, metal
Surface frame 2 passes through plastic housing surface frame 3 by the screw welded on the back side, and the alphabet sequence of metal key-press 4 loads in plastic housing surface frame 3,
Metal center 6 is fixed in plastic housing surface frame 3, protects the side of key zone, and silica gel push-button plate 7 is pressed in safety glass 5 and metal
The back side of button 4；
2）Keypad PET circuits piece 8 is attached on keypad 9, keypad 9 passes through the screw of metal frame 2, with silica gel
Keypad 7 is fitted, and metal back frame 10 is passed through to the screw of metal frame 2, is fitted with keypad 9, gold is pinned with screw thread copper post 16
The screw that category surface frame 2 is welded above；
3）Zebra bar 12 is placed in safety island framework 11, conductive thin of the outer ring of safety island framework 11 around secure line
Film（PET film）, safety island frame assembly is placed in the back side of keypad 9；Liquid crystal 13 is fixed on mainboard with heating pcb board 14
On 15, mainboard is fixed on metal back frame 10, is fixed by the rivet being riveted on metal back frame；Mainboard 15 and keypad 9 it
Between pass through zebra bar 12 carry out connection；Because the surrounding safety island framework 11 of zebra bar 12 is wrapped up, and safety island frame table
Face is provided with conductive film, it is to avoid front and rear 6 directions up and down, by the possibility of external detection, it is ensured that internal data is passed
Defeated safety；
4）By I O board 17, by the lead column of plastic housing surface frame 3, fixed on mainboard 15, centre is connect by mother daughter board connector
Circuit passband；By plastic back shell 19, by the lead column of plastic housing surface frame 3, fitted with plastic housing surface frame 3, and by screw 21, by whole machine
Locking completely；SAM cards are inserted after I O board, SAM cards lid 20 is inserted into the side of plastic back shell 19.
Further, above-mentioned silica gel push-button plate body surface is provided with silica gel convex button, and the silica gel convex button back side has electric conductor, described
Contactor of the electric conductor when silica gel convex button is pressed against keypad side on switch-on keying plate；The keypad includes button
Plate main body and the keypad PET circuit pieces being sticked in keypad main body（Flexible circuitry keypad）, the keypad main body with
There are six line conduction points, it is located at the clearance portion of key position, the surface of silica gel push-button plate body on keypad PET circuit pieces
It is provided with 6 elastics corresponding with six line conduction points；The elasticity that silica gel convex button is produced by silica gel push-button, and silicon
Electric conductor above glue button is connected with keypad, it is ensured that the conducting of internal security circuit；When whole machine is artificially set from external
When standby upper dismounting, silica gel convex button can rebound back normal condition under squeezed state, so as to cause the conduction below silica gel convex button
Body is disconnected with keypad.
The present invention has the operation principle of tamper contact metal keyboard：In normal operating condition, silica gel convex button and silica gel are pressed
Keypad body is by under the compressing of keypad and plastic housing surface frame, the contactor on the electric conductor switch-on keying plate at the silica gel convex button back side,
Keyboard is set to be in upstate；And when keyboard is artificially removed from external equipment, silica gel convex button can be under squeezed state
Rebound back normal condition, so as to cause the electric conductor below silica gel convex button to be disconnected with keypad, it is to avoid is attacked by safety
Hit.
Brief description of the drawings：
Fig. 1 is the positive stereogram of keyboard of the present invention；
Fig. 2 is the stereogram at the keyboard back side of the present invention；
Fig. 3 is the explosive view of keyboard of the present invention；
Fig. 4 is the stereogram of silica gel push-button plate body；
Fig. 5 is the profile that silica gel convex button is connected with other parts on silica gel push-button plate body；
Fig. 6 is the front view of silica gel push-button plate body；
Fig. 7 is the profile that elastic boss is connected with other parts on silica gel push-button plate body；
Fig. 8 is the explosive view of safety island framework and zebra bar；
Fig. 9 is the stereogram that safety island framework is arranged on zebra bar in keypad main body；
Figure 10 is the stereogram of plastic back shell；
Figure 11 is the front view of keypad PET circuits；
1 is foam piece, and 2 be metal frame, and 3 be plastic housing surface frame, and 4 be metal key-press, and 5 be safety glass, and 6 be metal center
, 7 be silica gel push-button plate body, and 8 be keypad PET circuits, and 9 be keypad, and 10 be metal back frame, and 11 be safety island framework,
12 be conductive zebra bar, and 13 be liquid crystal, and 14 be heating pcb board, and 15 be mainboard, and 16 be screw thread copper post, and 17 be I O board, and 18 are
USB interface, 19 be plastic back shell, and 20 be SAM Ka Gai, and 21 be machine tooth screw.
Embodiment：
Below in conjunction with the accompanying drawings and embodiment the present invention will be further described.
The present invention has the metal keyboard of tamper contact, including keyboard body A, the keyboard body A include plastic housing surface frame 3
With the metal key-press 4 being located in plastic housing surface frame 3, the rear side of metal key-press 4 is sequentially provided with silica gel push-button plate body 7 and keypad 9,
The surface of silica gel push-button plate body 7 is provided with silica gel convex button 701, and the back side of silica gel convex button 701 has electric conductor, and the electric conductor is in silicon
Contactor when glue convex button is pressed against 9 side of keypad on electric conductor switch-on keying plate.Electric conductor is carbon granules or metal film
704。
Further, in order to reasonable in design, above-mentioned silica gel push-button plate body surface is provided with two silica gel convex buttons, and it is located at respectively
Silica gel push-button plate body surface upper and lower part position, and shift to install.Two silica gel convex buttons are cylindrical silica gel convex button, its center
The line of point and keyboard body length direction straight line 12 degree of angles of formation.
Further, above-mentioned keypad 9 includes keypad main body 901 and the keypad being sticked in keypad main body
PET circuit pieces（Flexible circuitry keypad）8, the keypad main body 901 is with having six circuits on keypad PET circuits piece 8
Firing point 801, it is located at the clearance portion of key position, and the surface of silica gel push-button plate body 7 is provided with and six line conduction point phases
Corresponding 6 elastics 702.This six line conduction points 801 are squeezed by 6 elastics 702 in the structure of silica gel push-button 7
Pressure, it is ensured that the conducting of keypad PET circuits and keypad.Have inside keypad PET around safe MESH lines, when keypad pet sheet
When face is scratched, circuit will be switched off, it is to avoid by security attack.6 each twos of elastic 702 are a row, totally three rows, first,
3rd row's elastic 702 is in the same lengthwise position of silica gel push-button plate body 7, the elastic 702 and first of second row, the 3rd row
The dislocation 16mm of elastic 702, shifts to install and is conducive to improving security.
Further, the above-mentioned back side of keypad 9 is provided with mainboard 15, and safety island is provided between the mainboard 15 and keypad 9
Framework 11, the safety island framework 11 is to be equipped with a framework, the framework for connecting circuit between mainboard and keypad
Conductive zebra bar 12, positioned at safety island framework outer peripheral face be provided with conductive film（PET film）1101.Once there is external safety
Attack destruction metal keyboard, is broken the conductive film on safety island framework, so that dead circuit, further ensures peace
Entirely.
Further, the front surface of above-mentioned silica gel push-button plate body 7 is provided around the elastic boss 703 on all edges of plate body, elasticity
Boss 703 passes through the extruding between keypad 9 and plastic housing surface frame 3, it is to avoid external water and dirt enter whole machine from surface, reach IP65
Water proof and dust proof purpose.The elastic section of boss 703 is counterfort type, and its underpart is rectangle, and top is the rounding of rectangle top, and elasticity is convex
Platform 703 it is total high in its width.
Further, plastic back shell 19 is provided with rear side of above-mentioned mainboard, the underframe side of plastic back shell 19 is provided with osculum
1901, the osculum 1901 is used for the dewatering needs of the globule produced inside machine by dew-point temperature, and osculum is bell mouth shape,
Its horn mouth taper is 25 degree.
Further, it is sequentially provided with table after metal frame 2 and foam piece 1, the metal frame 2 on front side of above-mentioned plastic housing surface frame
Face is welded with screw 201, and the screw passes through plastic housing surface frame 3, silica gel push-button plate body 7, keypad 9 and metal back frame 10, and with
Screw thread copper post 16 is locked.
Further, above-mentioned plastic housing surface frame, silica gel push-button plate body, keypad and metal back frame, mainboard, which are provided with, is used to pacify
Fill and be provided with I O board 17 and usb 18 on rear side of the perforation of safety glass 5 and liquid crystal display 13, the mainboard.
The present invention has the installation method of tamper contact metal keyboard, and installation steps are as follows：
1）Foam piece 1 is attached to the surface of plastic housing surface frame 3, safety glass 5 by 3M glue bonds in plastic housing surface frame 3, metal
Surface frame 2 passes through plastic housing surface frame 3 by the screw welded on the back side, and the alphabet sequence of metal key-press 4 loads in plastic housing surface frame 3,
Metal center 6 is fixed in plastic housing surface frame 3, protects the side of key zone, and silica gel push-button plate 7 is pressed in safety glass 5 and metal
The back side of button 4；
2）Keypad PET circuits piece 8 is attached in keypad main body 901, keypad main body 901 passes through metal frame 2
Screw, is fitted with silica gel push-button plate 7, and metal back frame 10 is passed through to the screw of metal frame 2, is fitted with keypad 9, uses screw thread copper
Post 16 pins the screw that metal frame 2 is welded above；
3）Zebra bar 12 is placed in safety island framework 11, conductive thin of the outer ring of safety island framework 11 around secure line
Film（PET film）, safety island frame assembly is placed in the back side of keypad 9；Liquid crystal 13 is fixed on mainboard with heating pcb board 14
On 15, mainboard is fixed on metal back frame 10, is fixed by the rivet being riveted on metal back frame；Mainboard 15 and keypad 9 it
Between pass through zebra bar 12 carry out connection；Because the surrounding safety island framework 11 of zebra bar 12 is wrapped up, and safety island frame table
Face is provided with conductive film, it is to avoid front and rear 6 directions up and down, by the possibility of external detection, it is ensured that internal data is passed
Defeated safety；
4）By I O board 17, by the lead column of plastic housing surface frame 3, fixed on mainboard 15, centre is connect by mother daughter board connector
Circuit passband；By plastic back shell 19, by the lead column of plastic housing surface frame 3, fitted with plastic housing surface frame 3, and by screw 21, by whole machine
Locking completely；SAM cards are inserted after I O board, SAM cards lid 20 is inserted into the side of plastic back shell 19.
Further, above-mentioned silica gel push-button plate body surface is provided with silica gel convex button, and the silica gel convex button back side has electric conductor, described
Contactor of the electric conductor when silica gel convex button is pressed against keypad side on switch-on keying plate；The keypad includes button
Plate main body and the keypad PET circuit pieces being sticked in keypad main body（Flexible circuitry keypad）, the keypad main body with
There are six line conduction points, it is located at the clearance portion of key position, the surface of silica gel push-button plate body on keypad PET circuit pieces
It is provided with 6 elastics corresponding with six line conduction points；The elasticity that silica gel convex button is produced by silica gel push-button, and silicon
Electric conductor above glue button is connected with keypad, it is ensured that the conducting of internal security circuit；When whole machine is artificially set from external
When standby upper dismounting, silica gel convex button can rebound back normal condition under squeezed state, so as to cause the conduction below silica gel convex button
Body is disconnected with keypad.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with
Modification, should all belong to the covering scope of the present invention.
Claims (2)
1. a kind of installation method with tamper contact metal keyboard, it is characterised in that：Wherein there is the metallic bond of tamper contact
Disk, including keyboard body, the keyboard body include plastic housing surface frame and the metal key-press being located in plastic housing surface frame, and the metal is pressed
Silica gel push-button plate body and keypad are sequentially provided with rear side of key, the silica gel push-button plate body surface is provided with silica gel convex button, silica gel convex button
The back side has electric conductor, contactor of the electric conductor when silica gel convex button is pressed against keypad side on switch-on keying plate；
The silica gel push-button plate body surface is provided with two silica gel convex buttons, and it is located at silica gel push-button plate body surface upper and lower part position respectively
Put, and shift to install；The keypad includes keypad main body and the keypad PET circuits being sticked in keypad main body
Piece, the keypad main body is with having six line conduction points on keypad PET circuit pieces, it is located at the gap of key position
Portion, the surface of silica gel push-button plate body is provided with 6 elastics corresponding with six line conduction points；The button back is set
There is mainboard, safety island framework is provided between the mainboard and keypad, the safety island framework is to be worn in a framework, the framework
Provided with the zebra bar for connecting circuit between mainboard and keypad, the outer peripheral face positioned at safety island framework is provided with conductive film；
The front surface of the silica gel push-button plate body is provided around the elastic boss on all edges of plate body；Plastic back shell is provided with rear side of the mainboard,
The plastic back shell underframe side is provided with osculum；Metal frame and foam piece, the gold are sequentially provided with front side of the plastic housing surface frame
Surface soldered has screw after category surface frame, and the screw passes through plastic housing surface frame, silica gel push-button plate body, keypad and metal back frame, and
Locked with screw thread copper post；The plastic housing surface frame, silica gel push-button plate body, keypad and metal back frame, mainboard, which are provided with, to be used to install
I O board and USB interface are provided with rear side of the perforation of safety glass and liquid crystal display, the mainboard；
Installation steps are as follows：
1）Foam piece 1 is attached to the surface of plastic housing surface frame 3, safety glass 5 by 3M glue bonds in plastic housing surface frame 3, metal frame 2
Plastic housing surface frame 3 is passed through by the screw welded on the back side, the alphabet sequence of metal key-press 4 loads in plastic housing surface frame 3, in metal
Frame 6 is fixed in plastic housing surface frame 3, protects the side of key zone, and silica gel push-button plate 7 is pressed in safety glass 5 and carried on the back with metal key-press 4
Face；
2）Keypad PET circuits piece 8 is attached on keypad 9, keypad 9 passes through the screw of metal frame 2, with silica gel push-button
Plate 7 is fitted, and metal back frame 10 is passed through to the screw of metal frame 2, fitted with keypad 9, and metal covering is pinned with screw thread copper post 16
The screw that frame 2 is welded above；
3）Zebra bar 12 is placed in safety island framework 11, the outer ring of safety island framework 11 around secure line conductive film,
Safety island frame assembly is placed in the back side of keypad 9；Liquid crystal 13 is fixed on mainboard 15 with heating pcb board 14, mainboard is solid
It is scheduled on metal back frame 10, is fixed by the rivet being riveted on metal back frame；Pass through zebra bar between mainboard 15 and keypad 9
12 carry out connection；Because the surrounding safety island framework 11 of zebra bar 12 is wrapped up, and safety island framework surface is provided with conductive thin
Film, it is to avoid front and rear 6 directions up and down, by the possibility of external detection, it is ensured that the safety of internal data transfer；
4）By I O board 17, by the lead column of plastic housing surface frame 3, middle to pass through mother daughter board connector fixed on mainboard 15, connection is electric
Road；By plastic back shell 19, by the lead column of plastic housing surface frame 3, fitted with plastic housing surface frame 3, and by screw 21, whole machine is complete
Locking；SAM cards are inserted after I O board, SAM cards lid 20 is inserted into the side of plastic back shell 19.
2. the installation method according to claim 1 with tamper contact metal keyboard, it is characterised in that：The silica gel is pressed
Keypad body surface face is provided with silica gel convex button, and the silica gel convex button back side has electric conductor, and the electric conductor is pressed against button in silica gel convex button
Contactor during plate side on switch-on keying plate；The keypad includes keypad main body and is sticked in keypad main body
Keypad PET circuit pieces, there are six line conduction points on the keypad main body and keypad PET circuit pieces, it is located at
The clearance portion of key position, the surface of silica gel push-button plate body is provided with 6 elastics corresponding with six line conduction points；Silicon
Electric conductor above the elasticity that glue convex button is produced by silica gel push-button 7, and silica gel push-button 7 is connected with keypad 9, it is ensured that interior
The conducting of portion's secure line；When whole machine is artificially removed from external equipment, silica gel convex button can rebound under squeezed state
Normal condition is returned, so as to cause the electric conductor below silica gel convex button to be disconnected with keypad 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510723281.8A CN105304386B (en) | 2015-10-29 | 2015-10-29 | Metal keyboard and its installation method with tamper contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510723281.8A CN105304386B (en) | 2015-10-29 | 2015-10-29 | Metal keyboard and its installation method with tamper contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105304386A CN105304386A (en) | 2016-02-03 |
| CN105304386B true CN105304386B (en) | 2017-07-18 |
Family
ID=55201501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510723281.8A Active CN105304386B (en) | 2015-10-29 | 2015-10-29 | Metal keyboard and its installation method with tamper contact |
Country Status (1)
| Country | Link |
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| CN (1) | CN105304386B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652259B (en) * | 2016-12-23 | 2018-11-02 | 福建瑞之付微电子有限公司 | A kind of POS safety detections switch |
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|---|---|---|---|---|
| CN201294178Y (en) * | 2008-10-28 | 2009-08-19 | 福建联迪商用设备有限公司 | Protection device for keyboard circuit |
| CN202142261U (en) * | 2011-07-27 | 2012-02-08 | 青岛海信智能商用设备有限公司 | Data protective device of liquid crystal display (LCD) screen and mobile point-of-sale (POS) terminal thereof |
| CN202205284U (en) * | 2011-09-09 | 2012-04-25 | 百富计算机技术（深圳）有限公司 | Protecting device for core devices of POS machine |
| CN202306723U (en) * | 2011-10-24 | 2012-07-04 | 福建联迪商用设备有限公司 | Point of sale (POS) terminal and mobile phone integrated handheld device |
| CN202615518U (en) * | 2012-08-10 | 2012-12-19 | 福建索天信息科技有限公司 | POS (point-of-sale) machine of public bicycle |
| CN203397364U (en) * | 2013-06-09 | 2014-01-15 | 北京计算机技术及应用研究所 | Multifunctional alarm handheld terminal equipment |
| EP2821894A1 (en) * | 2013-07-02 | 2015-01-07 | VeriFone, Inc. | A keypad |
| CN205264573U (en) * | 2015-10-29 | 2016-05-25 | 福建新大陆支付技术有限公司 | Metal keyboard with prevent tearing open contact |
-
2015
- 2015-10-29 CN CN201510723281.8A patent/CN105304386B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201294178Y (en) * | 2008-10-28 | 2009-08-19 | 福建联迪商用设备有限公司 | Protection device for keyboard circuit |
| CN202142261U (en) * | 2011-07-27 | 2012-02-08 | 青岛海信智能商用设备有限公司 | Data protective device of liquid crystal display (LCD) screen and mobile point-of-sale (POS) terminal thereof |
| CN202205284U (en) * | 2011-09-09 | 2012-04-25 | 百富计算机技术（深圳）有限公司 | Protecting device for core devices of POS machine |
| CN202306723U (en) * | 2011-10-24 | 2012-07-04 | 福建联迪商用设备有限公司 | Point of sale (POS) terminal and mobile phone integrated handheld device |
| CN202615518U (en) * | 2012-08-10 | 2012-12-19 | 福建索天信息科技有限公司 | POS (point-of-sale) machine of public bicycle |
| CN203397364U (en) * | 2013-06-09 | 2014-01-15 | 北京计算机技术及应用研究所 | Multifunctional alarm handheld terminal equipment |
| EP2821894A1 (en) * | 2013-07-02 | 2015-01-07 | VeriFone, Inc. | A keypad |
| CN205264573U (en) * | 2015-10-29 | 2016-05-25 | 福建新大陆支付技术有限公司 | Metal keyboard with prevent tearing open contact |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105304386A (en) | 2016-02-03 |
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