CN204009768U - A kind of tactile keyboard - Google Patents

Abstract

A kind of tactile keyboard, belong to electronic technology field, by keyboard, touch electronic circuit, operation circuit, keypad skeleton forms jointly, the corresponding touch electronic circuit of making integrated form of each button, the sensitivity adjustment resistance that touches electronic circuit welds separately, no longer within integrated form, the output of the touch electronic circuit that each button is corresponding connects operation circuit, when hand contact button, produce touch signal, through touching electronic circuit, amplify shaping, export available electric signal, reliable excitation operation circuit, by keyboard, the corresponding touch electronic circuit of making integrated form of button is put into keypad skeleton and is formed a kind of tactile keyboard together with operation circuit, solved card key, the problems such as button is insensitive, computor-keyboard is brought up to a new quality level.

Description

A kind of tactile keyboard

Technical field

Belong to electronic technology field.

Background technology

Computer, in current effect, is very important and irreplaceable.It has stepped into vast office space, with hundreds of millions families.Processing document needs it, understands the world also must want it by online, and contact and also need it with the external world, particularly in current informationalized today, its effect, more and more obvious.

Keyboard is the indispensable parts of computer, people's typing important documents data, inquiry file, draw a diagram etc. all can be used keyboard, but the people of conventional computer more or less can run into card key, be after button is pressed, cannot involution, button need to firmly be pressed the situation such as could show, such keyboard people are using uncomfortable, work together also unsatisfactory, to people, cause inconvenience, thoroughly eradicate this situation, can only eradicate this physical construction of keyboard, be key to be pressed rear downwards, without key, fulfil again and pop up recovery routine.Also be that keyboard is innovated thoroughly, mechanical key structure that both need not be such, also need not this simple on-off mode.Thereby the place relating to is many, need to solve a multiple technologies difficult problem.

Summary of the invention

Fundamental purpose of the present utility model is to propose a kind of new measure, form full tactile keyboard, its circuit is simple, faint touch signal can be converted into available electric signal, the problems such as card key, button be insensitive have been overcome, the function of General Promotion keyboard, brings up to a new quality level by computor-keyboard.

The technical solution used in the present invention is:

1, tactile keyboard, by a keyboard, touches electronic circuit, operation circuit, and keypad skeleton forms jointly.

Wherein: the extension line of keyboard connects the prestage input touching in electronic circuit.

Touch electronic circuit by prestage, amplifier stage, electronic switch level, electronic relay forms.

The input of prestage connects keyboard extension line, and the output of prestage is connected with the input end of amplifier stage.

Amplifier stage is comprised of with sensitivity adjustment resistance not gates such as the first not gate, the second not gate, the 3rd not gates: the input end of each not gate is connected a sensitivity adjustment resistance with output terminal, the input end of first not gate becomes the input end of amplifier stage and the output of prestage is connected, the input end of the output terminal of first not gate and second not gate joins, the input end of the output terminal of second not gate and the 3rd not gate joins, with this, connect all not gates in amplifier stage, the output terminal of last not gate becomes the output terminal of amplifier stage, the input of connecting electronic switching stage.

Electronic switch level is comprised of phase inverter: the input end of phase inverter is connected together becomes the input of electronic switch level, and the output terminal of phase inverter links together becomes the output of electronic switch level.

The output of the control line bud connecting electronic switching stage of electronic relay, two contacts of often opening of electronic relay connect operation circuit.

All circuit use integrated technique, then put in touch-key dish skeleton.

2, preamplifier state is a NPN triode.

3, each button in keyboard connects respectively a touch electronic circuit, and each touches electronic circuit and makes integrated form.

4, the touch electronic circuit that each button connects is made integrated form, and the sensitivity adjustment resistance in each electronic circuit welds separately, not within integrated form.

The existing meaning to each technical measures of the present invention, concrete condition is further explained as follows:

One, touch the explanation of electronic circuit:

When hand contact keyboard, touch signal, through prestage, amplifier stage, electronic switch level, finally starts electronic relay, successfully encourages the operation circuit in keypad.

1, prestage is a NPN triode, it is preposition amplifying triode, adopted the form of penetrating with output, have very strong feedback character, current base stage of putting amplifying triode has faint signal, i.e. the touch signal that hand contact keyboard produces, the output signal of preposition amplifying triode passes to phase inverter, phase inverter is converted to non-type touch signal the Voltage-output of standard, and then triggers and control triode, and startup starts electronic relay and encourages the operation circuit in keypad.

2, amplifier stage is comprised of not gate and sensitivity adjustment resistance, and not gate adopts the form of series connection, strengthens shaping and amplifying power, the electronic switch level being formed by phase inverter, there is very strong carrying load ability, because phase inverter quiescent dissipation is extremely low, when input signal changes, can automatic fitration reconcile, so the voltage of output can be protected, antijamming capability is strong, reduces time delay, so when having had signal, output is reliable in time.The fine adjustment of sensitivity of not gate, each not gate has been joined a sensitivity adjustment resistance, and its sensitivity resistor resistance is large, sensitivity step-down, resistance is little, and sensitivity raises, and has very strong adjustable.

Two, produce the physical process that touch key-press forms break-make:

When button corresponding to finger contact, the touch signal of human body is after amplifying, and line bag that completely can excited electrons relay also makes it to produce high-order, and result is that the normally opened contact that electronic relay line bag is corresponding changes connection into by often opening like this.Due to the two ends of normally opened contact, connected two line ends that the corresponding keyswitch of former mechanical keyboard connects, so while adopting hand to touch contact, with adopt mechanical key downwards by effect be equal to.Otherwise when hand pine is pasted button, or while leaving button, its touch signal is very weak, electronic relay disconnects, and is equivalent to mechanical key and upwards recovers the effect disconnecting.

Three, each circuit is made to the keyboard of making after integrated form; smooth as the touch-screen of mobile phone; the distribution of each button or the same with mechanical keyboard; such benefit is that people have been familiar with such button distribution; can not be like a fish out of water because of being unfamiliar with; can also on tactile keyboard, stick diaphragm, prevent dust.

After the invention process, promoted the security performance of anti-theft safety door, outstanding advantage is as follows:

1, entirely touch, machinery-free button, computer key can not produce the situation of card key, because button does not need the upwards program of involution.

2, keyboard volume diminishes, and particularly becomes very thin, because button does not need the upwards program of involution, therefore can save the distance of the downward motion of button.

3, the life-span of keyboard can improve, because there is no original product button needed " spring " in computer dish, keyboard cleaning is convenient.

4, good production, because required electronic component, without specific (special) requirements, particularly each unit is made after integrated just simplyr, each button can not influence each other.

5, touch electronic circuit circuit is simple, easy to adjust, with shaping feature, exports reliable voltage, makes integrated form convenient.

Accompanying drawing explanation

Fig. 1 touches electronic-circuit diagram.

In figure: 1, the extension line of a button; 3, preposition amplifying triode; 6, the not gate in amplifier stage; 7, the sensitivity adjustment resistance of not gate; 8, the phase inverter that forms electronic switch level; 11, electronic relay; 12, the operation circuit in keypad.

Fig. 2 is the frame assumption diagram that each several part is put into keypad mechanical keyboard skeleton.

In figure: 12, the operation circuit in keypad; 20, the button in keypad; 21, the touch electronic circuit of making integrated form that each button is corresponding; 22, keypad.

Embodiment

Fig. 1 and Fig. 2 have described a kind of mode of concrete enforcement.

One, option:

Prestage is selected large power triode, and electronic relay adopts 4066, and resistance is without specific (special) requirements.

Two, welding:

(1), the simulation of separation member welding.

1, according to Fig. 1, weld touch electronic circuit.

2, the button of keypad after connecting, wire is connected to corresponding touch electronic circuit.

3, the output of touch electronic circuit corresponding to each button is connected on the operation circuit in keypad.

(2) touch the facture that electronic circuit is made integrated circuit.

Each button connects a touch electronic circuit of making integrated form, the output of the touch electronic circuit of making integrated form that each button is corresponding connects the operation circuit in keypad, the sensitivity adjustment resistance of the touch electronic circuit that each button is corresponding should weld separately, not within integrated form.

Three, debugging.

Adjust sensitivity adjustable resistance, to adjust the sensitivity of amplifying circuit.

Four, install:

Together with button and touch electronic circuit after integrated, operation circuit in keypad, put into touch-key dish mechanical keyboard skeleton.

Claims (4)

1. a tactile keyboard, is characterized in that: by keyboard, touch electronic circuit, and operation circuit, keypad skeleton forms jointly:

Wherein: the extension line of keyboard connects the prestage input touching in electronic circuit;

Touch electronic circuit by prestage, amplifier stage, electronic switch level, electronic relay forms;

The input of prestage connects keyboard extension line, and the output of prestage is connected with the input end of amplifier stage;

Amplifier stage is comprised of with sensitivity adjustment resistance not gates such as the first not gate, the second not gate, the 3rd not gates: the input end of each not gate is connected a sensitivity adjustment resistance with output terminal, the input end of first not gate becomes the input end of amplifier stage and the output of prestage is connected, the input end of the output terminal of first not gate and second not gate joins, the input end of the output terminal of second not gate and the 3rd not gate joins, with this, connect all not gates in amplifier stage, the output terminal of last not gate becomes the output terminal of amplifier stage, the input of connecting electronic switching stage;

Electronic switch level is comprised of phase inverter: the input end of phase inverter is connected together becomes the input of electronic switch level, and the output terminal of phase inverter links together becomes the output of electronic switch level;

The output of the control line bud connecting electronic switching stage of electronic relay, two contacts of often opening of electronic relay connect operation circuit;

All circuit use integrated technique, then put in touch-key dish skeleton.

2. a kind of tactile keyboard according to claim 1, is characterized in that: preamplifier state is a NPN triode.

3. a kind of tactile keyboard according to claim 1, is characterized in that: each button in keyboard connects respectively one and touches electronic circuit, and each touches electronic circuit and makes integrated form.

4. a kind of tactile keyboard according to claim 1, is characterized in that: the touch electronic circuit that each button connects is made integrated form, and the sensitivity adjustment resistance in each electronic circuit welds separately, not within integrated form.