CN102543537A

CN102543537A - Metal keyboard with anti-disassembly contact point

Info

Publication number: CN102543537A
Application number: CN2012100303151A
Authority: CN
Inventors: 林魁
Original assignee: Fujian Landi Commercial Equipment Co Ltd
Current assignee: Fujian Landi Commercial Equipment Co Ltd
Priority date: 2012-02-13
Filing date: 2012-02-13
Publication date: 2012-07-04
Anticipated expiration: 2032-02-13
Also published as: CN102543537B

Abstract

The invention relates to a metal keyboard with an anti-disassembly contact point. The metal keyboard is characterized by comprising a metal panel, wherein a plastic bracket, a rubber pad, a polymer thick film (PTF) circuit board or a flexible printed circuit (FPC) board, a printed circuit board (PCB), an insulation gasket and a metal base plate are sequentially arranged below the metal panel from top to bottom; a water guide trough is formed on the plastic bracket; the PTF board or the FPC board is provided with a metal dome or carbon particles; the metal panel is tightly locked with the metal base plate through a bolt and a nut to form a whole; the contact point extends out of the rubber pad; the top part of the contact point passes through a through hole in the metal panel, and protrudes to a certain height; and the bottom part of the contact point presses the metal dome or the carbon particles on the PTF board or the FPC board. By combining the characteristics of different materials such as the metal piece, the rubber piece, the plastic material, the metal dome, the PTF/FPC board, the PCB, zebra strips and the like, a module meets financial security, an IP65 dustproof and waterproof level and an IK10 anti-explosion level requirement are met, and the metal keyboard can be prevented from being disassembled furtively and moved.

Description

A kind of metal keyboard with tamper contact

Technical field

The present invention relates to a kind of EPP keyboard tamper technical field that is applied to the financial field, particularly a kind of metal keyboard with tamper contact.

Background technology

At present, common metal keyboard on the market can not satisfy the designing requirement of financial security, can't detect the metal keyboard and moved, and can't satisfy the requirement of inspection center of People's Bank of China to the EPP keyboard.The existing on the market keyboard keyboard that meets EPP, but its antimigration technical matters is complicated, and cost is higher, can't satisfy waterproof and dustproof, the requirement of explosion proof of IP65 and IK10 simultaneously.

The technical terms that occurs among the present invention is explained as follows: (1) pcb board: printed circuit board (Printed Circuit Board), claim printed circuit board (PCB), printed substrate again; (2) PTF plate: polymer thick film circuit plate (Polymer Thick Film Circuit Board), identical with the FPC function, cost is lower; (3) FPC plate: flexible PCB (Flexible Printed Circuit Board) is a kind ofly to have a height reliability with what polyimides or polyester film were that base material is processed, and excellent flexible printed circuit is called for short soft board or FPC plate; (4) the young sheet of pot: be commonly called as metal clips (Metal Dome or Snap Dome); Adopt the stainless steel material of ultra-thin (0.05mm-0.1mm thickness) and superhard (general hardness is between the HV480-550) to process, be mainly used in the products such as thin film switch, microswitch, pcb board, rigid plate; (5) EPP: Crypted password keyboard; The device that is used for automatic PIN acceptance apparatus safety input PIN code and encryption; EPP generally is used in (or in self-oil feeder) in the ATM; Be used to import PIN code, through Setup Controller control, EPP has the shell that clear and definite physics and logic boundary and anti-tamper function perhaps can the tamper-indicating signs.

Summary of the invention

In view of the deficiency of prior art, the object of the present invention is to provide a kind of can waterproof and dustproof, the metal keyboard with tamper contact of explosion-proof and antimigration.

To achieve these goals; Technical scheme of the present invention is: a kind of metal keyboard with tamper contact; It is characterized in that: comprise metal decking; Said metal decking below from top to bottom is disposed with plastic stent, rubber blanket, PTF plate or FPC plate, pcb board, insulation spacer and metal base plate; Said plastic stent is provided with guiding gutter, and the bottom of said PTF plate or FPC plate is provided with young sheet of pot or carbon granules, is integral through bolt and nut locking between said metal decking and the metal base plate; Said rubber blanket extends the contact, and the top of said contact is passed the through hole on the metal decking and exceeded metal decking, and young sheet of pot or the carbon granules on PTF plate or the FPC plate pushed down in the bottom of said contact.

Further, said bolt is by the double-screw bolt that extends out on the metal decking, and said double-screw bolt passes plastic stent, rubber blanket, PTF plate or FPC plate, pcb board, insulation spacer and metal base plate and locked by nut.

Further, the top layer of said pcb board is provided with short circuit and is staggered in together some to the golden finger pad.

Further, said each layer of pcb board all is provided with and is meshed with the protection printed circuit board (PCB) and surrounds the first labyrinth-like lines of golden finger pad.

Further, the said first labyrinth-like lines is surveyed the circuit of grid for band.

Further, said PTF plate or each layer of FPC plate are provided with and the second labyrinth-like lines of protecting printed circuit board (PCB) to be meshed.

Further, said PTF plate or FPC plate link together the golden finger pad on its detection circuit and the pcb board through carbon granules.

Further, said metal base plate is provided with the perforate that supplies the zebra bar to pass, and said zebra bar couples together pcb board and control board.

Compared with prior art; The present invention has the following advantages: this metal keyboard structure is through the characteristic of different materials such as bond part, rubber parts, plastic material, the young sheet of pot, PTF/FPC plate, pcb board; When realizing that module meets financial security; Both satisfied dustproof, the classification of waterproof of IP65, also satisfied the anti-riot class requirement of IK10, and can prevent again to be torn open steathily; Specifically be; Use the firm and hard existing anti-riot function of upper and lower double layer of metal; Use plastic stent and rubber blanket to realize the waterproof and dustproof function; Use the firm and hard existing anti-detection protection of pcb board and PTF plate or FPC, use the zebra bar to realize and the secure communication of control board, use extended contact and the common antimigration contact that possesses anti-detecting function of forming of pcb board, PTF plate or FPC plate on the rubber blanket push button signalling.

Description of drawings

Fig. 1 is the structural representation one of the embodiment of the invention.

Fig. 2 is the structural representation two of the embodiment of the invention.

Among the figure: 1-metal decking, 2-plastic stent, 3-rubber blanket, 4-PTF plate or FPC plate, 5-pcb board, 6-insulation spacer, 7-metal base plate, 8-bolt, 9-nut, 10-zebra bar, 11-perforate, 12-contact.

Embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is done further elaboration.

With reference to figure 1 ~ 2; A kind of metal keyboard with tamper contact; Comprise metal decking 1, said metal decking 1 below from top to bottom is disposed with plastic stent 2, rubber blanket 3, PTF plate or FPC plate 4, pcb board 5, insulation spacer 6 and metal base plate 7, and said plastic stent 2 is provided with guiding gutter; Said PTF plate or FPC plate 4 are provided with carbon granules; Can certainly use the young sheet of pot to substitute carbon granules, 9 lockings are integral with nut through bolt 8 between said metal decking 1 and the metal base plate 7, and said rubber blanket 3 extends contact 12; The top of said contact 12 is passed the through hole on the metal decking 1 and is exceeded metal decking 1 certain altitude, and the carbon granules on PTF plate or the FPC plate 4 is just pushed down in the bottom of said contact 12.Wherein, said metal decking 1 and metal base plate 7 have been realized the anti-riot function of metal keyboard; Said (containing guiding gutter) plastic stent 2 and rubber blanket 3 are realized the waterproof and dustproof function of metal keyboards; Said contact 12 can produce deformation in the front when oppressed; When contact 12 is compressed to metal decking 1 height such as grade; 12 bottoms, said contact just can ensure to enough pressure between carbon granules and the pcb board on PTF plate or the FPC plate 4, make the pair of gold finger pad short circuit on the pcb board.

In the present embodiment; Surface aesthetic and compact conformation for the metal keyboard; Said bolt 8 is the double-screw bolts that extend out by on the metal decking 1, and said double-screw bolt passes plastic stent 2, rubber blanket 3, PTF plate or FPC plate 4, pcb board 5, insulation spacer 6 and metal base plate 7 and locked by nut 9.

In the present embodiment; In order to realize anti-detection protection to push button signalling; The top layer of said pcb board 5 is provided with short circuit and is staggered in together some to the golden finger pad; Said pcb board 5 each layers are provided with and protect printed circuit board (PCB) to be meshed and surround the first labyrinth-like lines of golden finger pad, and the said first labyrinth-like lines is surveyed the circuit of grid for band.Said PTF plate or FPC plate 4 each layers are provided with and the second labyrinth-like lines of protecting printed circuit board (PCB) to be meshed.Said PTF plate or FPC plate 4 link together the golden finger pad on its detection circuit and the pcb board 5 through carbon granules; When carbon granules closely contacts with pcb board 5, can make the golden finger pad switch short circuit on the pcb board 5.In case have the people to attempt to pass the labyrinth-like lines with the golden finger pad short circuit on the pcb board, the labyrinth-like lines will send warning.

In the present embodiment; In order to realize the secure communication of metal keyboard and control board; Said metal base plate 7 is provided with the perforate 11 that supplies zebra bar 10 to pass; Said zebra bar 10 couples together pcb board 5 and control board, utilizes the thickness protection zebra bar 10 of metal base plate 7 can not detected from peripheral direction simultaneously.

Principle of the present invention: whole system guarantees only to keep in the front compressing to contact 12, could the assurance system not send by the migration alarm signal, and other any method attempt shieldings all can be triggered an alarm signal by migration newspaper alarm signal.During use: whole metal keyboard is installed under the equipment cover, and each contact 12 is simultaneously oppressed, makes the every pair of golden finger pad short circuit on the pcb board 5; In case the metal keyboard is removed, golden finger pad on the pcb board 5 breaks off, the signal that is moved to system's transmission.

The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.

Claims

1. metal keyboard with tamper contact; It is characterized in that: comprise metal decking; Said metal decking below from top to bottom is disposed with plastic stent, rubber blanket, PTF plate or FPC plate, pcb board, insulation spacer and metal base plate; Said plastic stent is provided with guiding gutter, and the bottom of said PTF plate or FPC plate is provided with young sheet of pot or carbon granules, is integral through bolt and nut locking between said metal decking and the metal base plate; Said rubber blanket extends the contact, and the top of said contact is passed the through hole on the metal decking and exceeded metal decking, and young sheet of pot or the carbon granules on PTF plate or the FPC plate pushed down in the bottom of said contact.

2. a kind of metal keyboard according to claim 1 with tamper contact; It is characterized in that: said bolt is by the double-screw bolt that extends out on the metal decking, and said double-screw bolt passes plastic stent, rubber blanket, PTF plate or FPC plate, pcb board, insulation spacer and metal base plate and locked by nut.

3. a kind of metal keyboard with tamper contact according to claim 1 is characterized in that: the top layer of said pcb board is provided with short circuit and is staggered in together some to the golden finger pad.

4. a kind of metal keyboard with tamper contact according to claim 3 is characterized in that: said each layer of pcb board all is provided with and is meshed with the protection printed circuit board (PCB) and surrounds the first labyrinth-like lines of golden finger pad.

5. a kind of metal keyboard with tamper contact according to claim 4 is characterized in that: the said first labyrinth-like lines is surveyed the circuit of grid for band.

6. a kind of metal keyboard with tamper contact according to claim 1 is characterized in that: said PTF plate or each layer of FPC plate are provided with and the second labyrinth-like lines of protecting printed circuit board (PCB) to be meshed.

7. a kind of metal keyboard with tamper contact according to claim 6 is characterized in that: said PTF plate or FPC plate link together the golden finger pad on its detection circuit and the pcb board through young sheet of pot or carbon granules.

8. a kind of metal keyboard with tamper contact according to claim 1 is characterized in that: said metal base plate is provided with the perforate that supplies the zebra bar to pass, and said zebra bar couples together pcb board and control board.