CN104201028A - Membrane key structure with security and confidentiality functions and membrane keyboard - Google Patents
Membrane key structure with security and confidentiality functions and membrane keyboard Download PDFInfo
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- CN104201028A CN104201028A CN201410516902.0A CN201410516902A CN104201028A CN 104201028 A CN104201028 A CN 104201028A CN 201410516902 A CN201410516902 A CN 201410516902A CN 104201028 A CN104201028 A CN 104201028A
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Abstract
The invention relates to a membrane key structure with security and confidentiality functions and a membrane keyboard. The membrane key structure comprises a main circuit board, a metal dome, a fixed membrane and a flexible circuit board which are sequentially arranged from bottom to top, wherein a security and confidentiality line is arranged on the surface of the flexible circuit board; an upwardly raised spherical pressing part is arranged in the middle of the metal dome; the security and confidentiality line right above the spherical pressing part consists of a plurality of circular arc-shaped lines which are connected into a whole to form a conducting loop; each circular arc-shaped line is concentric or eccentric with the spherical pressing part. Therefore, when the membrane key structure is pressed down, deformation and stress degree of the spiral security and confidentiality line are greatly reduced, so that effective protection is realized, the safety protection performance is stable and guaranteed and the service life is effectively prolonged.
Description
Technical field
The invention belongs to membrane keyboard technical field, particularly a kind of film press-key structure and membrane keyboard with security confidentiality function.
Background technology
At present, on the market membrane keyboard, film face-plate be integrate word marking, trade mark, window shows transparency; Wherein, membrane keyboard has been widely used in all types of industries and the household electronic products such as intelligent electronic measuring instrument, Medical Instruments, computer control, digital lathe, electronic scale, post and telecommunications, photocopier, refrigerator, microwave oven, electric fan, washing machine, electronic game machine, started to replace traditional switch in every field, and progressively go on leading position, and according to present development, the special membrane keyboard of having flexible PCB (FPC/PET printed circuit) in the safe and secret equipment of needs becomes generally application.
Existing these membrane keyboards are provided with several employings and have the button of the film press-key structure of security confidentiality function, and this film press-key structure comprises the main circuit board 1 ', the young sheet 2 ' of pot, fixing film 3 ' and the flexible PCB 4 ' (as Fig. 2) that set gradually from lower to upper.In the time of pressing keys, the central point of the young sheet 2 ' of pot (also claiming metal clips) of film press-key structure is recessed, touches the center bonding pads on main circuit board 1 ', and electric current just forms loop through the young sheet of pot to main pad from the periphery pad of main circuit board, electric current passes through, and keypress function is achieved.
The young sheet of pot (Metal dome Switch), the general stainless steel that adopts is made, and is one of critical piece forming membrane keyboard, is used on PCB wiring board, by means of elasticity and the conductivity of metal clips, in product, play the effect of the switch of a high-quality.
Summary of the invention
All there is following problem in the membrane keyboard with safe and secret circuit on existing market at present: reckon without the wire laying mode of the safe and secret circuit 5 ' of the young sheet of pot 2 ' top in membrane keyboard, be generally orthoscopic and other random wire laying mode (as Fig. 1).Will cause so the young sheet 2 ' of pot in the time pressing, the safe and secret circuit 5 ' deflection that is positioned at the flexible PCB 4 ' surface of pot directly over young sheet 2 ' is large, the power that is damaged excessive (following Fig. 3), permanent use can produce very large fatigue loss, cause secure line 5 ' to fracture, thereby affected the useful life of whole membrane keyboard.
For solving the above-mentioned problems in the prior art; when the invention provides one and pressing; the distortion and the stressed degree that are positioned at the safe and secret circuit of pot directly over young sheet greatly reduce; safeguard protection performance is stable, secure, the film press-key structure with security confidentiality function and the membrane keyboard that effectively increase the service life.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
Have a film press-key structure for security confidentiality function, comprise the main circuit board, the young sheet of pot, fixing film and the flexible PCB that set gradually from lower to upper, the surface of described flexible PCB is provided with safe and secret circuit; The centre position of the young sheet of described pot is provided with the sphere press section raising up, be positioned at safe and secret circuit directly over described sphere press section and be integrally connected by some sections the circular arc circuit that forms conducting loop and form, every section of circular arc circuit is to be concentric or eccentric with sphere press section.
Further, the surface of described flexible PCB is provided with two-layer above safe and secret circuit, and every layer of described safe and secret circuit is the reducing arc spiral shape circuit being formed by the circular arc connection of multistage different radii; Described two-layer above safe and secret link tester is crossed interlayer conduction hole and is connected, and forms conducting loop.
Further, the surface of described flexible PCB is provided with two-layer above safe and secret circuit, every layer of described safe and secret circuit comprises the reducing arc spiral shape circuit being formed by the circular arc connection of multistage different radii, and be located at the circular arc circuit of reducing arc spiral shape circuit multistage different radii outer and that arrange from inside to outside, and the two ends that are positioned at the circular arc circuit of every section of different radii outside reducing arc spiral shape circuit are connected with the adjacent end portion of the circular arc circuit of adjacent two sections respectively; Described two-layer above safe and secret link tester is crossed interlayer conduction hole and is connected, and forms conducting loop.
Further, the axle core of every layer of described safe and secret circuit is identical with the axle core of sphere press section.
Further, the young sheet of described pot be circular, square, triangle or cross, and intermediate position is provided with described sphere press section, and employing metal clips material is integrally formed.
A kind of membrane keyboard, which is provided with several and has adopted the button of the film press-key structure with security confidentiality function of the present invention.
The invention has the beneficial effects as follows:
The present invention is by technique scheme, and in the time pressing film press-key structure, the distortion of the safe and secret circuit of spirality and stressed degree greatly reduce, thereby can be effectively protected, and safeguard protection performance is stable, secure, has effectively extended useful life.
Brief description of the drawings
Fig. 1 is the structural representation of the press-key structure aerial prospective of existing membrane keyboard;
Fig. 2 is the sectional structure schematic diagram of the non-pressed state of press-key structure of existing membrane keyboard;
Fig. 3 is the sectional structure schematic diagram of the press-key structure pressed state of existing membrane keyboard;
Fig. 4 is the structural representation of a kind of film press-key structure embodiment mono-aerial prospective with security confidentiality function of the present invention;
Fig. 5 is the sectional structure schematic diagram of a kind of film press-key structure embodiment mono-pressed state with security confidentiality function of the present invention;
Fig. 6 is the structural representation of a kind of film press-key structure embodiment bis-aerial prospectives with security confidentiality function of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment mono-:
As shown in Figures 4 and 5, a kind of film press-key structure with security confidentiality function described in the embodiment of the present invention one, comprise the main circuit board 1, the young sheet 2 of pot, fixing film 3 and the flexible PCB 4 that set gradually from lower to upper, the surface of described flexible PCB 4 is provided with safe and secret circuit 5.The young sheet 2 of described pot is circular, and intermediate position is provided with the sphere press section 21 raising up, and adopts metal clips material integrally formed.Be positioned at safe and secret circuit 5 directly over described sphere press section 21 and be integrally connected by some sections the circular arc circuit that forms conducting loop and form, every section of circular arc circuit is for concentric or eccentric with sphere press section 21; Concrete structure can be: the upper surface of described flexible PCB 1 is provided with two-layer (also can two-layer more than) safe and secret circuit 5, and every layer of described safe and secret circuit 5 is the reducing arc spiral shape circuits that formed by the circular arc connection of multistage different radii; Described two-layer safe and secret circuit 5 connects by interlayer conduction hole 6, forms conducting loop.
Like this, in the time pressing film press-key structure of the present invention, distortion and the stressed degree of the safe and secret circuit 5 of spirality greatly reduce, thereby can be effectively protected, and safeguard protection performance is stable, secure, has effectively extended useful life.
Certainly, the young sheet 2 of described pot can be also square, triangle or cross, be similarly provided with described sphere press section 21 in centre position, and employing metal clips material is integrally formed.
Embodiment bis-:
As shown in Figure 6, a kind of film press-key structure with security confidentiality function described in the embodiment of the present invention two, its structure and embodiment mono-are basic identical, comprise the main circuit board 1, the young sheet 2 of pot, fixing film 3 and the flexible PCB 4 that set gradually from lower to upper, the surface of described flexible PCB 4 is provided with safe and secret circuit 5.The young sheet 2 of described pot is circular, and intermediate position is provided with the sphere press section 21 raising up, and adopts metal clips material integrally formed.Be positioned at safe and secret circuit 5 directly over described sphere press section 21 and be integrally connected by some sections the circular arc circuit that forms conducting loop and form, every section of circular arc circuit is for concentric or eccentric with sphere press section 21; The surface of described flexible PCB 4 is provided with two-layer (more than two-layer) safe and secret circuit 5, and described two-layer safe and secret circuit 5 connects by interlayer conduction hole 6, forms conducting loop; Difference is only: every layer of described safe and secret circuit 5 comprises the reducing arc spiral shape circuit being formed by the circular arc connection of multistage different radii, and be located at the circular arc circuit of reducing arc spiral shape circuit multistage different radii outer and that arrange from inside to outside, and the two ends that are positioned at the circular arc circuit of every section of different radii outside reducing arc spiral shape circuit are connected with the adjacent end portion of the circular arc circuit of adjacent two sections respectively.
Similarly, in the time pressing the present embodiment two film press-key structure, safe and secret circuit 5 distortion of described two-layer spirality and stressed degree are few equally, can be effectively protected, and safeguard protection performance is stable, secure, long service life.
A kind of membrane keyboard, this membrane keyboard can be the membrane keyboard based on FPC material and technique, also can be the membrane keyboard based on PET material and conductive silver paste and/or the printing of carbon slurry, which is provided with several and adopted the button described in the embodiment of the present invention one and two with the film press-key structure of security confidentiality function; Like this, the safeguard protection performance of this membrane keyboard is stable, reliable, and also can effectively extend useful life.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (6)
1. one kind has the film press-key structure of security confidentiality function, comprise the main circuit board (1), the young sheet of pot (2), fixing film (3) and the flexible PCB (4) that set gradually from lower to upper, the surface of described flexible PCB (4) is provided with safe and secret circuit (5); It is characterized in that: the centre position of the young sheet of described pot (2) is provided with the sphere press section (21) raising up, be positioned at safe and secret circuit (5) directly over described sphere press section (21) and be integrally connected by some sections the circular arc circuit that forms conducting loop and form, every section of circular arc circuit is for concentric or eccentric with sphere press section (21).
2. the film press-key structure with security confidentiality function according to claim 1, it is characterized in that: the surface of described flexible PCB (4) is provided with two-layer above safe and secret circuit (5), and every layer of described safe and secret circuit (5) is the reducing arc spiral shape circuit being formed by the circular arc connection of multistage different radii; Described two-layer above safe and secret circuit (5) connects by interlayer conduction hole (6), forms conducting loop.
3. the film press-key structure with security confidentiality function according to claim 1, it is characterized in that: the surface of described flexible PCB (4) is provided with two-layer above safe and secret circuit (5), every layer of described safe and secret circuit (5) comprises the reducing arc spiral shape circuit being formed by the circular arc connection of multistage different radii, and be located at the circular arc circuit of reducing arc spiral shape circuit multistage different radii outer and that arrange from inside to outside, and the two ends that are positioned at the circular arc circuit of every section of different radii outside reducing arc spiral shape circuit are connected with the adjacent end portion of the circular arc circuit of adjacent two sections respectively, described two-layer above safe and secret circuit (5) connects by interlayer conduction hole (6), forms conducting loop.
4. according to the film press-key structure with security confidentiality function described in claim 2 or 3, it is characterized in that: the axle core of every layer of described safe and secret circuit (5) is identical with the axle core of sphere press section (21).
5. the film press-key structure with security confidentiality function according to claim 4, it is characterized in that: the young sheet of described pot (2) is circular, square, triangle or cross, intermediate position is provided with described sphere press section (21), and adopts metal clips material integrally formed.
6. a membrane keyboard, is characterized in that: this keyboard is provided with several and has adopted the button described in claim 1 or 2 or 3 or 5 with the film press-key structure of security confidentiality function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410516902.0A CN104201028B (en) | 2014-09-30 | 2014-09-30 | A kind of film press-key structure and membrane keyboard with security confidentiality function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410516902.0A CN104201028B (en) | 2014-09-30 | 2014-09-30 | A kind of film press-key structure and membrane keyboard with security confidentiality function |
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| Publication Number | Publication Date |
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| CN104201028A true CN104201028A (en) | 2014-12-10 |
| CN104201028B CN104201028B (en) | 2019-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410516902.0A Active CN104201028B (en) | 2014-09-30 | 2014-09-30 | A kind of film press-key structure and membrane keyboard with security confidentiality function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106204914A (en) * | 2016-07-12 | 2016-12-07 | 福建联迪商用设备有限公司 | A kind of code keypad that heats realizes the method and device of Secure Transaction |
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| CN101258552A (en) * | 2005-07-21 | 2008-09-03 | 爱特梅尔公司 | Security method for data protection |
| 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 |
| CN103367003A (en) * | 2012-04-11 | 2013-10-23 | 深圳市证通电子股份有限公司 | Encrypted keyboard and button scanning protective device |
| CN103617908A (en) * | 2013-11-15 | 2014-03-05 | 福建鑫诺通讯技术有限公司 | Keyboard safe protecting device and method of payment terminal |
| CN103632499A (en) * | 2012-08-20 | 2014-03-12 | 德昌电机(深圳)有限公司 | Security assembly for protecting device |
| CN204155810U (en) * | 2014-09-30 | 2015-02-11 | 太阳神(珠海)电子有限公司 | A kind of film press-key structure and membrane keyboard with security confidentiality function |
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2014
- 2014-09-30 CN CN201410516902.0A patent/CN104201028B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101258552A (en) * | 2005-07-21 | 2008-09-03 | 爱特梅尔公司 | Security method for data protection |
| 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 |
| CN103367003A (en) * | 2012-04-11 | 2013-10-23 | 深圳市证通电子股份有限公司 | Encrypted keyboard and button scanning protective device |
| CN103632499A (en) * | 2012-08-20 | 2014-03-12 | 德昌电机(深圳)有限公司 | Security assembly for protecting device |
| CN103617908A (en) * | 2013-11-15 | 2014-03-05 | 福建鑫诺通讯技术有限公司 | Keyboard safe protecting device and method of payment terminal |
| CN204155810U (en) * | 2014-09-30 | 2015-02-11 | 太阳神(珠海)电子有限公司 | A kind of film press-key structure and membrane keyboard with security confidentiality function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106204914A (en) * | 2016-07-12 | 2016-12-07 | 福建联迪商用设备有限公司 | A kind of code keypad that heats realizes the method and device of Secure Transaction |
| CN106204914B (en) * | 2016-07-12 | 2018-06-08 | 福建联迪商用设备有限公司 | A kind of method and device for heating code keyboard and realizing Secure Transaction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104201028B (en) | 2019-05-07 |
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