CN209496336U - A kind of new type superthin planar touch keyboard based on micro-current detection technique - Google Patents
A kind of new type superthin planar touch keyboard based on micro-current detection technique Download PDFInfo
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- CN209496336U CN209496336U CN201920567638.1U CN201920567638U CN209496336U CN 209496336 U CN209496336 U CN 209496336U CN 201920567638 U CN201920567638 U CN 201920567638U CN 209496336 U CN209496336 U CN 209496336U
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Abstract
The utility model discloses a kind of new type superthin planar touch keyboard based on micro-current detection technique, the keyboard includes planar touch key layer, circuit board and bottom plate, galvanic circle, amplifier circuit, single-chip microcontroller and usb communication module are laid on circuit board, galvanic circle and amplifier circuit are electrically connected, amplifier circuit and single-chip microcontroller are electrically connected, and single-chip microcontroller is electrically connected by the USB interface of usb communication module and computer；Planar touch key layer includes plastic base and multiple key modules, multiple key modules are embedded on plastic base, each key module includes three-decker from inside to outside, is interior electrode, intermediate insulating layer and external electrode respectively, and interior electrode, external electrode contact electric connection with galvanic circle.New type superthin planar touch keyboard provided by the utility model based on micro-current detection technique realizes keypress function by planar touch, has the characteristics that structure is simple, volume is frivolous, easy to clean, noise is small.
Description
Technical field
The utility model relates to planar touch keyboard technique field, more particularly to a kind of based on micro-current detection technique
New type superthin planar touch keyboard.
Background technique
The network globalization of 21 century results in the demand of the peripheral product of computer is greatly increased, thus for
The completeness of computor-keyboard function has certain requirement, but keyboard still has a series of the problem of not being solved at present,
Such as: keyboard protrusion cause the area of narrow space be unfavorable for record material and study, be easy to cause accidentally touch, be not easy it is clear
Reason, keyboard is thicker, key tap when have the shortcomings that noise.At present, it is studying Wireless Keyboard both at home and abroad and other is defeated
Enter means, wherein Wireless Keyboard is mainly by bluetooth and infrared ray come remote-wireless manipulation, this is really for solving above ask
Topic has certain help, but cannot tackle the problem at its root；And for other input mediums, still it is in conceptual phase, mesh
The preceding input medium mainly studied mainly has language, limbs touch, brain wave etc., but these types of input mode is also in experiment
Stage goes back an open question presently, there are many so being difficult to come into operation.If keyboard can be inputted surface system by us
It is made smooth sensitive surface, and allows this sensitive surface that can differentiate the touching difference of manpower and other objects to control defeated
Enter, then we will substantially solve a series of problems encountered in above-mentioned life.
Utility model content
The purpose of the utility model is to provide a kind of new type superthin planar touch keyboard based on micro-current detection technique leads to
It crosses planar touch and realizes keypress function, have the characteristics that structure is simple, volume is frivolous, easy to clean, noise is small.
To achieve the above object, the utility model provides following scheme:
A kind of new type superthin planar touch keyboard based on micro-current detection technique, the keyboard include successively setting from top to bottom
Planar touch key layer, circuit board and the bottom plate set are laid with galvanic circle, amplifier circuit, single-chip microcontroller on the circuit board
With usb communication module, the galvanic circle and amplifier circuit are electrically connected, and the amplifier circuit and the single-chip microcontroller are electrical
Connection, the single-chip microcontroller and the usb communication module are electrically connected, and the single-chip microcontroller is by the usb communication module and calculates
The USB interface of machine is electrically connected, and the galvanic circle includes the transverse electric road and vertical circuit that insulation is laid, the transverse electric road and vertical electricity
Road is connected with the amplifier circuit respectively；The planar touch key layer includes plastic base and multiple key modules, more
A key module is embedded on the plastic base, and each key module includes three-decker from inside to outside, point
Be not interior electrode, intermediate insulating layer and external electrode, the interior electrode and the transverse electric road are electrically connected, the external electrode with it is described
Vertical circuit is electrically connected, and finger touches the key module, and finger is connected to inner and outer electrodes, the galvanic circle conducting.
Optionally, the single-chip microcontroller uses STM32F103VET6 chip, and the usb communication module is CH340 chip.
Optionally, the interior electrode, external electrode are copper material, and the intermediate insulating layer is plastic material.
Optionally, the transverse electric road and vertical circuit are wrapped up by insulating layer.
Optionally, key legend layer is provided in the planar touch key layer, the key legend layer is graphite applying
Layer, it is printed on and the one-to-one monogram of the key module on the graphite applying layer.
Optionally, setting installation card slot, the circuit board, planar touch key layer are sequentially arranged at described on the bottom plate
It installs in card slot, the circuit board, planar touch key layer are bonded together by glue fitting.
According to specific embodiment provided by the utility model, the utility model discloses following technical effects: this is practical new
The new type superthin planar touch keyboard based on micro-current detection technique that type provides, mainly by bottom plate, circuit board and planar touch
Key layer is constituted, and structure is simple, volume is frivolous, and multiple independent key modules, key mould are embedded in planar touch key layer
Block is made of interior electrode, intermediate insulating layer and external electrode, when finger touches inner and outer electrodes, on corresponding circuit board
Galvanic circle will be switched on, and formed faint electric current and be transmitted to single-chip microcontroller, realize the function of key triggering, and planar touch reality is passed through
Existing keypress function, overall structure is smooth frivolous, and easy to clean, touch key-press noise is small, is more advantageous to and uses and carry.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without any creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is that the structure of new type superthin planar touch keyboard of the utility model embodiment based on micro-current detection technique is shown
It is intended to；
Fig. 2 is the structural schematic diagram of the utility model embodiment planar touch key layer；
Fig. 3 is that the circuit of new type superthin planar touch keyboard of the utility model embodiment based on micro-current detection technique connects
Connect schematic diagram；
Fig. 4 is that the finger of the utility model embodiment key module touches schematic diagram；
Fig. 5 is the utility model embodiment amplifier circuit configuration schematic diagram；
Description of symbols: 1, key legend layer；2, planar touch key layer；3, circuit board；4, bottom plate；5, key mould
Block；501, interior electrode；502, intermediate insulating layer；503, external electrode；6, plastic base；7, transverse electric road；8, circuit is indulged.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The purpose of the utility model is to provide a kind of new type superthin planar touch keyboard based on micro-current detection technique leads to
It crosses planar touch and realizes keypress function, have the characteristics that structure is simple, volume is frivolous, easy to clean, noise is small.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
It is provided by the embodiment of the utility model novel super based on micro-current detection technique as shown in Fig. 1 to Fig. 3 and Fig. 5
Thin plate touch keyboard, including planar touch key layer 2, circuit board 3 and the bottom plate 4 set gradually from top to bottom, the circuit
Galvanic circle, amplifier circuit, single-chip microcontroller and USB communication module, the galvanic circle and amplifier circuit are laid on plate 3
It is electrically connected, the amplifier circuit and the single-chip microcontroller are electrically connected, and the single-chip microcontroller electrically connects with the usb communication module
It connects, the single-chip microcontroller is electrically connected by the USB interface of the usb communication module and computer, and the galvanic circle includes exhausted
The transverse electric road 7 and vertical circuit 8, the transverse electric road 7 and vertical circuit 8 that edge is laid are wrapped up by insulating layer, the transverse electric road 7 and vertical electricity
Road 8 is connected with the amplifier circuit respectively, and the then single-chip microcontroller high potential point of transverse electric road 7, indulges the then single-chip microcontroller of circuit 8
The crosspoint of grounding point, transverse electric road 7 and vertical circuit 8 is just in the underface of each key module 5 of keyboard；The planar touch key
Layer includes plastic base 6 and multiple key modules 5, and multiple key modules 5 are embedded on the plastic base 6, adjacent institute
It states and is provided with insulating layer between key module 5；Each key module 5 includes three-decker from inside to outside, is interior respectively
Electrode 501, intermediate insulating layer 502 and external electrode 503, the interior electrode 501 are electrically connected with the transverse electric road 7, the dispatch from foreign news agency
Pole 503 and vertical circuit 8 are electrically connected, and the intermediate lead-out wire for drawing interior electrode 501 of key module 5 connects transverse electric road 7, peripheral
The lead-out wire of one circle external electrode 503 connects vertical circuit 8, and finger touches the key module 5, and interior electrode 501 and external electrode 503 incude
The contact of finger, due to finger conduction, finger is connected to interior electrode 501 and external electrode 503, corresponding transverse electric road 7 and vertical circuit 8 connect
Logical, the galvanic circle conducting, the circuit constituted with the amplifier is also switched on, and Weak current is formed in circuit, by putting
Tiny signal is enlarged into the identifiable voltage analog signal of single-chip microcontroller by the amplification of big device circuit, and single-chip microcontroller receives amplification
Analog signal is converted into digital signal after voltage signal afterwards, can be read which column conducting which arranges, to realize key
Corresponding, single-chip microcontroller triggers computer input by usb communication module, realizes the keyboard Trigger Function as common keyboard.
Wherein, the single-chip microcontroller uses STM32F103VET6 chip, and the usb communication module is CH340 chip；It is described
Interior electrode 501, external electrode 503 are copper material, and the intermediate insulating layer 502 is plastic material；The planar touch key layer
Be provided with key legend layer 1 on 2, the key legend layer 1 is graphite applying layer, be printed on the graphite applying layer with it is described
The one-to-one monogram of key module 5 can also first catch the copper electrode in planar touch key layer 2 for beauty
Graphite applying layer identical with plastic base color, then with very thin one layer white ABS material print in corresponding key module
The area of upper corresponding letter, the key letter covering copper electrode stamped is very little, does not influence the normal work of keyboard；It is described
Setting installation card slot on bottom plate 4, the circuit board 3, planar touch key layer 2 are sequentially arranged in the installation card slot, described
Circuit board 3, planar touch key layer 2 are bonded together by glue fitting, can also be in circuit board 3, planar touch key layer
2, threaded hole is set on bottom plate 4, the fixed installation of three is carried out by screw.
As shown in figure 4, the contact of interior electrode 501 and 503 finger sensing of external electrode, forms Weak current in circuit, lead to
Tiny signal is enlarged into the identifiable voltage analog signal of single-chip microcontroller by the amplification of overpower amplifier, and single-chip microcontroller receives
Analog signal is converted into digital signal after amplified voltage signal, single-chip microcontroller handles journey using internal preset keyboard signal
Sequence is inputted by USB module communications triggered computer, realizes the function as common keyboard.
New type superthin planar touch keyboard provided by the utility model based on micro-current detection technique, mainly by bottom plate,
Circuit board and plane touch key-press layer are constituted, and structure is simple, volume is frivolous, is embedded in planar touch key layer multiple independent
Key module, key module are made of interior electrode, intermediate insulating layer and external electrode, when finger touches inner and outer electrodes,
Galvanic circle on corresponding circuit board will be switched on, and formed faint electric current and be transmitted to single-chip microcontroller, realize the function of key triggering
Can, keypress function is realized by planar touch, overall structure is smooth frivolous, and easy to clean, touch key-press noise is small, is more advantageous to
It uses and carries.
Specific case used herein is expounded the principles of the present invention and embodiment, above embodiments
Explanation be merely used to help understand the method and its core concept of the utility model；Meanwhile for the general technology of this field
Personnel, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.In conclusion
The content of the present specification should not be construed as a limitation of the present invention.
Claims (6)
1. a kind of new type superthin planar touch keyboard based on micro-current detection technique, which is characterized in that including from top to bottom according to
Planar touch key layer, circuit board and the bottom plate of secondary setting are laid with galvanic circle, amplifier circuit, list on the circuit board
Piece machine and usb communication module, the galvanic circle and amplifier circuit are electrically connected, the amplifier circuit and the single-chip microcontroller
Be electrically connected, the single-chip microcontroller and the usb communication module are electrically connected, the single-chip microcontroller by the usb communication module and
The USB interface of computer is electrically connected, and the galvanic circle includes the transverse electric road and vertical circuit that insulation is laid, the transverse electric road and
Vertical circuit is connected with the amplifier circuit respectively；The planar touch key layer includes plastic base and multiple key moulds
Block, multiple key modules are embedded on the plastic base, and each key module includes three-layered node from inside to outside
Structure is interior electrode, intermediate insulating layer and external electrode respectively, and the interior electrode and the transverse electric road are electrically connected, the external electrode
It is electrically connected with the vertical circuit, finger touches the key module, and finger is connected to the inner and outer electrodes, the conduction
Circuit conducting.
2. the new type superthin planar touch keyboard according to claim 1 based on micro-current detection technique, which is characterized in that
The single-chip microcontroller uses STM32F103VET6 chip, and the usb communication module is CH340 chip.
3. the new type superthin planar touch keyboard according to claim 1 based on micro-current detection technique, which is characterized in that
The interior electrode, external electrode are copper material, and the intermediate insulating layer is plastic material.
4. the new type superthin planar touch keyboard according to claim 1 based on micro-current detection technique, which is characterized in that
The transverse electric road and vertical circuit are wrapped up by insulating layer.
5. the new type superthin planar touch keyboard according to claim 1 based on micro-current detection technique, which is characterized in that
Key legend layer is provided in the planar touch key layer, the key legend layer is graphite applying layer, the graphite applying
It is printed on and the one-to-one monogram of the key module on layer.
6. the new type superthin planar touch keyboard according to claim 1 based on micro-current detection technique, which is characterized in that
Setting installation card slot on the bottom plate, the circuit board, planar touch key layer are sequentially arranged in the installation card slot, described
Circuit board, planar touch key layer are bonded together by glue fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920567638.1U CN209496336U (en) | 2019-04-24 | 2019-04-24 | A kind of new type superthin planar touch keyboard based on micro-current detection technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920567638.1U CN209496336U (en) | 2019-04-24 | 2019-04-24 | A kind of new type superthin planar touch keyboard based on micro-current detection technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209496336U true CN209496336U (en) | 2019-10-15 |
Family
ID=68157782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920567638.1U Expired - Fee Related CN209496336U (en) | 2019-04-24 | 2019-04-24 | A kind of new type superthin planar touch keyboard based on micro-current detection technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209496336U (en) |
-
2019
- 2019-04-24 CN CN201920567638.1U patent/CN209496336U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191015 Termination date: 20210424 |
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| CF01 | Termination of patent right due to non-payment of annual fee |