CN105304386A - Metal keyboard with anti-disassembly contact, and installation method thereof - Google Patents
Metal keyboard with anti-disassembly contact, and installation method thereof Download PDFInfo
- Publication number
- CN105304386A CN105304386A CN201510723281.8A CN201510723281A CN105304386A CN 105304386 A CN105304386 A CN 105304386A CN 201510723281 A CN201510723281 A CN 201510723281A CN 105304386 A CN105304386 A CN 105304386A
- Authority
- CN
- China
- Prior art keywords
- keypad
- silica gel
- metal
- frame
- button
- 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 invention relates to a metal keyboard with an anti-disassembly contact, and an installation method thereof. The metal keyboard comprises a keyboard body and is characterized in that the keyboard body comprises a plastic case face frame and metal buttons arranged in the plastic case face frame, the rear side of the metal buttons as a whole is successively provided with a silica gel keypad body and a keypad, the surface of the silica gel keypad body is provided with silica gel protruding buttons, the back surface of the silica gel keypad body is provided with a conductor, and the conductor is connected with a circuit switch on the keypad when the silica gel protruding buttons are extruded to the side of the keypad. According to the invention, when the keyboard is artificially dismounted from an external device, the silica gel protruding buttons rebound to a normal state from an extruded state, as a result, the conductor below the silica gel protruding buttons is disconnected from the keypad, and thus a security attack is prevented.
Description
technical field:
The present invention relates to a kind of metal keyboard and the installation method thereof with tamper contact.
background technology:
Easily produce the problem of transaction security in the market in the unmanned non-cash transaction process such as automatic vending machine, ticket machine, and wherein the keyboard of those equipment is especially easily damaged or attacks.
summary of the invention:
The object of the present invention is to provide a kind of metal keyboard and the installation method thereof with tamper contact, this metal keyboard with tamper contact is reasonable in design, is conducive to the safety improving keyboard use.
The present invention has the metal keyboard of tamper contact, comprise keyboard body, it is characterized in that: described keyboard body comprises to be moulded shell face frame and is located at the metal key-press moulded in the frame of shell face, silica gel push-button plate body and keypad is provided with successively on rear side of described metal key-press, described silica gel push-button plate body surface is provided with silica gel convex button, the silica gel convex button back side has electric conductor, the contactor of described electric conductor when silica gel convex 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 lays respectively at silica gel push-button plate body upper surface and lower position, and shifts to install.
Further, above-mentioned keypad includes keypad main body and the keypad PET circuit sheet (flexible circuitry keypad) in keypad main body that is sticked, described keypad main body and keypad PET circuit sheet have six line conduction points, it is positioned at the clearance portion of key position, and the surface of silica gel push-button plate body is provided with 6 elastics corresponding with six line conduction points.
Further, the above-mentioned keypad back side is provided with mainboard, is provided with safety island framework between described mainboard and keypad, and described safety island framework is a framework, be equipped with the zebra bar for connecting circuit between mainboard and keypad in described framework, the outer peripheral face being positioned at safety island framework is provided with conductive film.
Further, the front surface of above-mentioned silica gel push-button plate body is provided with the elasticity boss around plate body week edge.
Further, be provided with plastic back shell on rear side of above-mentioned mainboard, described plastic back shell underframe limit is provided with osculum.
Further, above-mentioned moulding on front side of the frame of shell face is provided with metal frame and foam sheet successively, and described metal frame rear surface is welded with screw, and described screw through moulding shell face frame, silica gel push-button plate body, keypad and metal back frame, and is locked with screw thread copper post.
Further, above-mentioned shell face frame, silica gel push-button plate body, keypad and metal back frame, the mainboard moulded is provided with perforation for installing toughened glass and liquid crystal display screen, is provided with IO plate and USB interface on rear side of described mainboard.
The present invention has the installation method of tamper contact metal keyboard, it is characterized in that: installation steps are as follows:
1) foam sheet 1 is attached to the surface of moulding shell face frame 3, toughened glass 5 is being moulded on shell face frame 3 by 3M glue bond, metal frame 2 by screw that the back side is welded through moulding shell face frame 3, metal key-press 4 alphabet sequence loads to be moulded in shell face frame 3, metal center 6 is fixed on to be moulded in shell face frame 3, protect the side of key zone, silica gel push-button plate 7 is pressed in toughened glass 5 and metal key-press 4 back side;
2) keypad PET circuit sheet 8 is attached on keypad 9, keypad 9, through the screw of metal frame 2, is fitted with silica gel push-button plate 7, by the screw of metal back frame 10 through metal frame 2, fit with keypad 9, pin with screw thread copper post 16 screw that metal frame 2 welds above;
3) be placed in safety island framework 11 by zebra bar 12, safety island frame assembly, around the conductive film (PET film) of secure line, is placed in keypad 9 back side by safety island framework 11 outer ring; Be fixed on mainboard 15 by liquid crystal 13 and heating pcb board 14, mainboard is fixed on metal back frame 10, is fixed by the rivet be riveted on metal back frame; Connection is carried out by zebra bar 12 between mainboard 15 and keypad 9; Because the surrounding safety island framework 11 of zebra bar 12 wraps up, and safety island framework surface is provided with conductive film, avoids 6 directions up and down, by the possibility of external detection, ensure that the safety of internal data transfer;
4) by IO plate 17, by moulding the lead of shell face frame 3, be fixed on mainboard 15, middle by mother daughter board connector, connect circuit; By plastic back shell 19, by moulding the lead of shell face frame 3, and moulding shell face frame 3 and fit, and by screw 21, complete machine is locked completely; After SAM card is inserted IO plate, SAM card lid 20 is inserted into plastic back shell 19 side.
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, the contactor of described electric conductor when silica gel convex button is pressed against keypad side on switch-on keying plate; Described keypad includes keypad main body and the keypad PET circuit sheet (flexible circuitry keypad) in keypad main body that is sticked, described keypad main body and keypad PET circuit sheet have six line conduction points, it is positioned at the clearance portion of key position, and the surface of silica gel push-button plate body 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 the electric conductor above silica gel push-button is connected with keypad, ensures the conducting of internal security circuit; When complete machine is artificially removed from external equipment time, silica gel convex button can rebound back normal condition from squeezed state, thus causes the electric conductor below silica gel convex button and keypad to disconnect.
The present invention has the operation principle of tamper contact metal keyboard: at normal operating condition, silica gel convex button and silica gel push-button plate body by keypad and mould shell face frame compressing under, contactor on the electric conductor switch-on keying plate at the silica gel convex button back side, makes keyboard be in upstate; And when keyboard is artificially removed from external equipment time, silica gel convex button can rebound back normal condition from squeezed state, thus cause the electric conductor below silica gel convex button and keypad to disconnect, avoid and suffer security attack.
accompanying drawing illustrates:
Fig. 1 is the stereogram in keyboard front 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 on silica gel push-button plate body, silica gel convex button is connected with other parts;
Fig. 6 is the front view of silica gel push-button plate body;
Fig. 7 is the profile that on silica gel push-button plate body, elasticity boss is connected with other parts;
Fig. 8 is the explosive view of safety island framework and zebra bar;
Fig. 9 is the stereogram that safety island framework and zebra bar are arranged in keypad main body;
Figure 10 is the stereogram of plastic back shell;
Figure 11 is the front view of keypad PET circuit;
1 is foam sheet, and 2 is metal frame, and 3 for moulding shell face frame, and 4 is metal key-press, 5 is toughened glass, and 6 is metal center, and 7 is silica gel push-button plate body, and 8 is keypad PET circuit, 9 is keypad, and 10 is metal back frame, and 11 is safety island framework, and 12 is conduction zebra bar, 13 is liquid crystal, and 14 is heating pcb board, and 15 is mainboard, 16 is screw thread copper post, and 17 is IO plate, and 18 is USB interface, 19 is plastic back shell, and 20 is SAM Ka Gai, and 21 is machine tooth screw.
embodiment:
Below in conjunction with drawings and Examples, the present invention will be further described.
The present invention has the metal keyboard of tamper contact, comprise keyboard body A, described keyboard body A comprises and moulds shell face frame 3 and be located at the metal key-press 4 moulded in shell face frame 3, silica gel push-button plate body 7 and keypad 9 is provided with successively on rear side of described metal key-press 4, described silica gel push-button plate body 7 surface is provided with silica gel convex button 701, silica gel convex button 701 back side has electric conductor, the contactor of described electric conductor when silica gel convex button is pressed against keypad 9 side 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 lays respectively at silica gel push-button plate body upper surface and lower position, and shifts to install.Two silica gel convex buttons are cylindrical silica gel convex button, and line and the keyboard body length direction straight line of its central point form 12 degree of angles.
Further, above-mentioned keypad 9 includes keypad main body 901 and the keypad PET circuit sheet (flexible circuitry keypad) 8 in keypad main body that is sticked, described keypad main body 901 and keypad PET circuit sheet 8 have six line conduction points 801, it is positioned at the clearance portion of key position, and the surface of silica gel push-button plate body 7 is provided with 6 elastics 702 corresponding with six line conduction points.These six line conduction points 801, by the extruding of structural 6 elastics 702 of silica gel push-button 7, ensure the conducting of keypad PET circuit and keypad.Keypad PET inside has around safe MESH line, and when keypad pet sheet face is scratched time, circuit will disconnect, and avoid by security attack.6 every two of elastics 702 are a row, totally three rows, the first, the 3rd row's elastic 702 is in the same lengthwise position of silica gel push-button plate body 7, and the elastic of second row 702 and the first, the 3rd is arranged elastic 702 and to be misplaced 16mm, shifts to install and is conducive to raising fail safe.
Further, above-mentioned keypad 9 back side is provided with mainboard 15, safety island framework 11 is provided with between described mainboard 15 and keypad 9, described safety island framework 11 is a framework, be equipped with the conduction zebra bar 12 for connecting circuit between mainboard and keypad in described framework, the outer peripheral face being positioned at safety island framework is provided with conductive film (PET film) 1101.Once there be external security attack to destroy metal keyboard, the conductive film on safety island framework is ruptured, thus dead circuit, further ensure safety.
Further, the front surface of above-mentioned silica gel push-button plate body 7 is provided with the elasticity boss 703 around plate body week edge, and elasticity boss 703, by keypad 9 and the extruding of moulding between shell face frame 3, is avoided outside water and dirt to enter complete machine from surface, reached IP65 water proof and dust proof object.Elasticity boss 703 section is counterfort type, and its underpart is rectangle, and top is the rounding of rectangle top, and the height overall of elasticity boss 703 equals its width.
Further, be provided with plastic back shell 19 on rear side of above-mentioned mainboard, described plastic back shell 19 underframe limit is provided with osculum 1901, the dewatering needs of the globule that this osculum 1901 produces because of dew point temperature for machine intimate, osculum is bell mouth shape, and its horn mouth tapering is 25 degree.
Further, above-mentioned moulding on front side of the frame of shell face is provided with metal frame 2 and foam sheet 1 successively, described metal frame 2 rear surface is welded with screw 201, and described screw through moulding shell face frame 3, silica gel push-button plate body 7, keypad 9 and metal back frame 10, and is locked with screw thread copper post 16.
Further, above-mentioned shell face frame, silica gel push-button plate body, keypad and metal back frame, the mainboard moulded is provided with perforation for installing toughened glass 5 and liquid crystal display screen 13, is provided with IO plate 17 and usb 18 on rear side of described mainboard.
The present invention has the installation method of tamper contact metal keyboard, and installation steps are as follows:
1) foam sheet 1 is attached to the surface of moulding shell face frame 3, toughened glass 5 is being moulded on shell face frame 3 by 3M glue bond, metal frame 2 by screw that the back side is welded through moulding shell face frame 3, metal key-press 4 alphabet sequence loads to be moulded in shell face frame 3, metal center 6 is fixed on to be moulded in shell face frame 3, protect the side of key zone, silica gel push-button plate 7 is pressed in toughened glass 5 and metal key-press 4 back side;
2) keypad PET circuit sheet 8 is attached in keypad main body 901, keypad main body 901, through the screw of metal frame 2, is fitted with silica gel push-button plate 7, by the screw of metal back frame 10 through metal frame 2, fit with keypad 9, pin with screw thread copper post 16 screw that metal frame 2 welds above;
3) be placed in safety island framework 11 by zebra bar 12, safety island frame assembly, around the conductive film (PET film) of secure line, is placed in keypad 9 back side by safety island framework 11 outer ring; Be fixed on mainboard 15 by liquid crystal 13 and heating pcb board 14, mainboard is fixed on metal back frame 10, is fixed by the rivet be riveted on metal back frame; Connection is carried out by zebra bar 12 between mainboard 15 and keypad 9; Because the surrounding safety island framework 11 of zebra bar 12 wraps up, and safety island framework surface is provided with conductive film, avoids 6 directions up and down, by the possibility of external detection, ensure that the safety of internal data transfer;
4) by IO plate 17, by moulding the lead of shell face frame 3, be fixed on mainboard 15, middle by mother daughter board connector, connect circuit; By plastic back shell 19, by moulding the lead of shell face frame 3, and moulding shell face frame 3 and fit, and by screw 21, complete machine is locked completely; After SAM card is inserted IO plate, SAM card lid 20 is inserted into plastic back shell 19 side.
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, the contactor of described electric conductor when silica gel convex button is pressed against keypad side on switch-on keying plate; Described keypad includes keypad main body and the keypad PET circuit sheet (flexible circuitry keypad) in keypad main body that is sticked, described keypad main body and keypad PET circuit sheet have six line conduction points, it is positioned at the clearance portion of key position, and the surface of silica gel push-button plate body 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 the electric conductor above silica gel push-button is connected with keypad, ensures the conducting of internal security circuit; When complete machine is artificially removed from external equipment time, silica gel convex button can rebound back normal condition from squeezed state, thus causes the electric conductor below silica gel convex button and keypad to disconnect.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. one kind has the metal keyboard of tamper contact, comprise keyboard body, it is characterized in that: described keyboard body comprises to be moulded shell face frame and is located at the metal key-press moulded in the frame of shell face, silica gel push-button plate body and keypad is provided with successively on rear side of described metal key-press, described silica gel push-button plate body surface is provided with silica gel convex button, the silica gel convex button back side has electric conductor, the contactor of described electric conductor when silica gel convex button is pressed against keypad side on switch-on keying plate.
2. the metal keyboard with tamper contact according to claim 1, is characterized in that: described silica gel push-button plate body surface is provided with two silica gel convex buttons, and it lays respectively at silica gel push-button plate body upper surface and lower position, and shifts to install.
3. the metal keyboard with tamper contact according to claim 1, it is characterized in that: described keypad includes keypad main body and the keypad PET circuit sheet (flexible circuitry keypad) in keypad main body that is sticked, described keypad main body and keypad PET circuit sheet have six line conduction points, it is positioned at the clearance portion of key position, and the surface of silica gel push-button plate body is provided with 6 elastics corresponding with six line conduction points.
4. the metal keyboard with tamper contact according to claim 1, it is characterized in that: the described keypad back side is provided with mainboard, safety island framework is provided with between described mainboard and keypad, described safety island framework is a framework, be equipped with the zebra bar for connecting circuit between mainboard and keypad in described framework, the outer peripheral face being positioned at safety island framework is provided with conductive film.
5. the metal keyboard with tamper contact according to claim 1, is characterized in that: the front surface of described silica gel push-button plate body is provided with the elasticity boss around plate body week edge.
6. the metal keyboard with tamper contact according to claim 4, is characterized in that: be provided with plastic back shell on rear side of described mainboard, and described plastic back shell underframe limit is provided with osculum.
7. the metal keyboard with tamper contact according to claim 1, it is characterized in that: described in mould on front side of the frame of shell face and be provided with metal frame and foam sheet successively, described metal frame rear surface is welded with screw, described screw through moulding shell face frame, silica gel push-button plate body, keypad and metal back frame, and is locked with screw thread copper post.
8. the metal keyboard with tamper contact according to claim 7, it is characterized in that: described in mould shell face frame, silica gel push-button plate body, keypad and metal back frame, mainboard and be provided with perforation for installing toughened glass and liquid crystal display screen, be provided with IO plate and USB interface on rear side of described mainboard.
9. there is as described in as arbitrary in claim 1-8 an installation method for tamper contact metal keyboard, it is characterized in that: installation steps are as follows:
1) foam sheet 1 is attached to the surface of moulding shell face frame 3, toughened glass 5 is being moulded on shell face frame 3 by 3M glue bond, metal frame 2 by screw that the back side is welded through moulding shell face frame 3, metal key-press 4 alphabet sequence loads to be moulded in shell face frame 3, metal center 6 is fixed on to be moulded in shell face frame 3, protect the side of key zone, silica gel push-button plate 7 is pressed in toughened glass 5 and metal key-press 4 back side;
2) keypad PET circuit sheet 8 is attached on keypad 9, keypad 9, through the screw of metal frame 2, is fitted with silica gel push-button plate 7, by the screw of metal back frame 10 through metal frame 2, fit with keypad 9, pin with screw thread copper post 16 screw that metal frame 2 welds above;
3) be placed in safety island framework 11 by zebra bar 12, safety island frame assembly, around the conductive film (PET film) of secure line, is placed in keypad 9 back side by safety island framework 11 outer ring; Be fixed on mainboard 15 by liquid crystal 13 and heating pcb board 14, mainboard is fixed on metal back frame 10, is fixed by the rivet be riveted on metal back frame; Connection is carried out by zebra bar 12 between mainboard 15 and keypad 9; Because the surrounding safety island framework 11 of zebra bar 12 wraps up, and safety island framework surface is provided with conductive film, avoids 6 directions up and down, by the possibility of external detection, ensure that the safety of internal data transfer;
4) by IO plate 17, by moulding the lead of shell face frame 3, be fixed on mainboard 15, middle by mother daughter board connector, connect circuit; By plastic back shell 19, by moulding the lead of shell face frame 3, and moulding shell face frame 3 and fit, and by screw 21, complete machine is locked completely; After SAM card is inserted IO plate, SAM card lid 20 is inserted into plastic back shell 19 side.
10. the installation method with tamper contact metal keyboard according to claim 9, it is characterized in that: described silica gel push-button plate body surface is provided with silica gel convex button, the silica gel convex button back side has electric conductor, the contactor of described electric conductor when silica gel convex button is pressed against keypad side on switch-on keying plate; Described keypad includes keypad main body and the keypad PET circuit sheet (flexible circuitry keypad) in keypad main body that is sticked, described keypad main body and keypad PET circuit sheet have six line conduction points, it is positioned at the clearance portion of key position, and the surface of silica gel push-button plate body 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 7, and the electric conductor above silica gel push-button 7 is connected with keypad 9, ensures the conducting of internal security circuit; When complete machine is artificially removed from external equipment time, silica gel convex button can rebound back normal condition from squeezed state, thus causes the electric conductor below silica gel convex button and keypad 9 to disconnect.
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 true CN105304386A (en) | 2016-02-03 |
| CN105304386B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652259A (en) * | 2016-12-23 | 2017-05-10 | 福建瑞之付微电子有限公司 | Novel protection design of POS safety detecting 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 |
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2015
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| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652259A (en) * | 2016-12-23 | 2017-05-10 | 福建瑞之付微电子有限公司 | Novel protection design of POS safety detecting switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105304386B (en) | 2017-07-18 |
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