CN204009769U - A kind of keyboard of machinery-free button - Google Patents

Abstract

A kind of keyboard of machinery-free button, belong to electronic technology field, by keyboard, OR circuit, preposition vibration adds penetrates with amplifying circuit, operation circuit in keyboard, keypad skeleton forms jointly, each button in keyboard connects an input of OR circuit, the output of OR circuit connects preposition vibration and adds and penetrate with amplifying circuit, when touch signal that hand contact keyboard produces through preposition penetrate amplify with amplifying circuit after, operation circuit in excitation keyboard, OR circuit and preposition vibration add to penetrate with amplifying circuit all makes integrated form, put into the keyboard that forms a kind of machinery-free button in keypad skeleton, thoroughly change the mechanical realization of computor-keyboard, overcome card key, the problems such as button is insensitive, allow people work together satisfactory, computor-keyboard is brought up to a new quality level.

Description

A kind of keyboard of machinery-free button

Technical field

Belong to electronic technology field.

Background technology

Society is in development, and science is improving, and office is write document from the original hand-written present computer office that become, process document, by online understand the world, and the external world contact, particularly in current informationalized today, the effect of computer, more and more obvious.

Keyboard is the indispensable parts of computer, 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, and seamed between mechanical keyboard button and button, dust can drop in seam, or the various pocket-handkerchieves such as staple together, also can form card key, the problems such as button is ineffective, and mechanical keyboard is bad to be cleaned out, brush with toothbrush, dynamics is little, and also brush is unclean, such keyboard people are using uncomfortable, work together also unsatisfactory, cause inconvenience to people.

To thoroughly eradicate this situation, can only eradicate this physical construction of keyboard, thoroughly change the mechanical realization of computor-keyboard, need the support of multiple technologies, thereby the place relating to be a lot, also need further to promote with perfect.

Summary of the invention

Fundamental purpose of the present utility model is to propose a kind of new measure, the mechanical realization that thoroughly changes computor-keyboard, forms a kind of touching computer keyboard, has overcome the problems such as card key, button be insensitive, allow people work together satisfactory, computor-keyboard is brought up to a new quality level.

The technical solution used in the present invention is:

1, the keyboard of machinery-free button is by a keyboard, OR circuit, and preposition vibration adds penetrates with amplifying circuit, the operation circuit in keyboard, keypad skeleton forms jointly.

Wherein: the extension line of keyboard connects the input of OR circuit, the output of OR circuit connects preposition vibration and adds and penetrate with preposition oscillator in amplifying circuit pin.

Preposition vibration adds to penetrate with amplifying circuit and forms by preposition oscillatory circuit, with signal amplification circuit, electronic relay.

Preposition oscillator pin and VDD pin connect power supply, and the CV pin of preposition oscillator is practiced midwifery second electric capacity of raw vibration to ground, and the TH pin of preposition oscillator connects two-way, and a road is to practice midwifery the resistance of raw vibration to power supply.

Raw first electric capacity vibrating is practiced midwifery to ground, the output that the OUT pin of preposition oscillator is preposition oscillatory circuit in another road.

Signal amplification circuit forms by penetrating with amplifier stage, voltage amplifying tube, power tube.

Penetrate with amplifier stage and formed by a NPN triode and the 2nd NPN triode, after the output connection triggering resistance of preposition oscillatory circuit, connect the base stage of a NPN triode, the collector of the collector of the one NPN triode and the 2nd NPN triode links together and connects power supply, the base stage of the emitter of the one NPN triode and the 2nd NPN triode links together, the emitter of the 2nd NPN triode connects the base stage of voltage amplifying tube, the grounded emitter of voltage amplifying tube, after a resistance of collector connection of voltage amplifying tube, arrive the base stage of power tube, the emitter of power tube connects power supply, the collector of power tube is as the output of signal amplification circuit, between the power supply of signal amplification circuit and ground, connect an electric capacity.

The control end of the output connecting electronic relay of signal amplification circuit, two terminations of all the other of electronic relay connect the operation circuit in keyboard.

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

2, preposition oscillator is 555 integrated circuit.

3, commissure electric capacity is electrodeless electric capacity.

4, the each button in keyboard connects respectively an input of OR circuit, and the output of OR circuit connects preposition oscillator pin.

5, preposition vibration adds to penetrate with circuit and makes integrated form.

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

One, device vibration adds the explanation of penetrating with amplifying circuit:

When hand contact keyboard, touch signal enters preposition oscillatory circuit, signal amplification circuit, finally starts electronic relay, successfully encourages the operation circuit in keyboard.

1, when hand contact keyboard, touch signal is through electric capacity, this electric capacity is or door is exported the commissure electric capacity (3 in Fig. 1) between oscillatory circuit, enter oscillatory circuit inside, produce accurate vibration, cause vibration failure of oscillation or seriously change, the OUT pin that makes oscillatory circuit is that preposition output (8 in Fig. 1) has high-order output.This high-order output excited electrons on-off circuit after amplifying circuit, opens electronic relay (17 in Fig. 1), the operation circuit in excitation keyboard.

Oscillatory circuit is reliable, touch-sensitive, and in the present invention of its reason, oscillatory circuit is not in the time having touch signal, and oscillatory circuit is in vibrational stabilization state, and when having after touch signal, must there is great change in oscillatory work state, output terminal must have high-order output.The output terminal ground capacitance of oscillatory circuit has interference effect, has improved this grade of performance from another angle.Oscillatory circuit is being structurally combined into of mimic channel and digital circuit, and analog functuion and logic function compatibility are integrated, and produces vibration accurately, can share a power supply with amplifying circuit, and oscillatory circuit maximum output current 200mA, carrying load ability is strong, and use is reliable, the life-span is long.

2, signal amplification circuit has adopted two-stage to penetrate with isolation amplification, highly sensitive, and voltage amplifying tube afterwards and power tube have adopted the complementary type of NPN triode and PNP triode to amplify, gain high, carrying load ability is strong, even touch signal is very faint, penetrate with after amplifying through two-stage, carry out voltage amplification and power amplification, more reliable, circuit does not need debugging substantially again.

Two, produce the physical process of touch key-press formation break-make:

In the time of 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 in the time that 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, the feature of OR circuit is: one of them input end has signal, output terminal just has output signal so, Here it is or, as long as meet one of them condition of input end, that output terminal just has result, by OR circuit, also played buffer action, each button can not be influenced each other, OR circuit is without debugging, reduce volume, be convenient to install.

Four, 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, touch dependable performance, circuit is simple, faint touch signal can be converted into available electric signal, highly sensitive, gains high, and carrying load ability is strong, and circuit, without debugging, is easy to make integrated circuit.

2, entirely touch,, there is not the situations such as card key, button be blunt in machinery-free button, and the fine adjustment of the sensitivity of signal shaping amplifier, so membrane keyboard sensitivity is good.

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

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

5, good production, because required electronic component, without particular/special requirement, particularly each unit is made after integrated just simplyr, each button can not influence each other.

Brief description of the drawings

Fig. 1 is that device vibration adds and penetrates with amplification circuit diagram.

In figure: 1, one of them button extension line in keyboard; 2, OR circuit; 3, commissure electric capacity; 4, produce the resistance of vibration; 5, produce first electric capacity of vibration; 6, produce second electric capacity of vibration; 7, preposition oscillator; 8, the output of oscillatory circuit; 9, anti-interference capacitor; 10, trigger resistance; 11, power end ground capacitance; 12, a NPN triode; 13, the 2nd NPN triode; 14, voltage amplifying tube; 15, the resistance between voltage amplification pipe collector and power tube base stage; 16, power tube; 17, electronic relay; 18, the operation circuit in keyboard.

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

In figure: 2 OR circuit; 18, the operation circuit in keypad; The device vibration of what 25, each button was corresponding make integrated form adds penetrates with amplifying circuit; 26, the button in keypad; 27, keypad.

Embodiment

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

One, option:

Preposition oscillator is ic 555, and electronic relay adopts 4066, and resistance is without particular/special requirement.

Two, welding:

(1), the simulation of separation member welding.

1, add and penetrate with amplifying circuit according to the vibration of Fig. 1 welder.

2, the button of keypad after connecting, wire is connected to an input of OR circuit.

3, be connected on the operation circuit in keypad installing to vibrate to add to penetrate with the output of amplifying circuit.

(2) device vibrates to add and penetrates the facture of making integrated circuit with amplifying circuit.

Each button connects an input of OR circuit, the output of OR circuit connects the device vibration of making integrated form and adds and penetrate with amplifying circuit, the device vibration of making integrated form adds the output of penetrating with amplifying circuit and connects the operation circuit in keypad, and OR circuit also can adopt integrated form.

Three, install:

Button, device vibration after integrated are added to penetrate with amplifying circuit and the operation circuit in OR circuit, keypad and put into touch-key dish mechanical keyboard skeleton.

Claims (5)

1. a keyboard for machinery-free button, is characterized in that: by keyboard, and OR circuit, preposition vibration adds penetrates with amplifying circuit, the operation circuit in keyboard, keypad skeleton forms jointly:

Wherein: the extension line of keyboard connects the input of OR circuit, the output of OR circuit connects preposition vibration and adds and penetrate with preposition oscillator in amplifying circuit pin;

Preposition vibration adds to penetrate with amplifying circuit and forms by preposition oscillatory circuit, with signal amplification circuit, electronic relay;

Preposition oscillator pin and VDD pin connect power supply, and the CV pin of preposition oscillator is practiced midwifery raw second electric capacity vibrating to ground; The TH pin of preposition oscillator connects two-way, and a road is to practice midwifery the raw resistance vibrating to power supply;

Raw first electric capacity vibrating is practiced midwifery to ground, the output that the OUT pin of preposition oscillator is preposition oscillatory circuit in another road;

Signal amplification circuit forms by penetrating with amplifier stage, voltage amplifying tube, power tube;

Penetrate with amplifier stage and formed by a NPN triode and the 2nd NPN triode, after the output connection triggering resistance of preposition oscillatory circuit, connect the base stage of a NPN triode, the collector of the collector of the one NPN triode and the 2nd NPN triode links together and connects power supply, the base stage of the emitter of the one NPN triode and the 2nd NPN triode links together, the emitter of the 2nd NPN triode connects the base stage of voltage amplifying tube, the grounded emitter of voltage amplifying tube, after a resistance of collector connection of voltage amplifying tube, arrive the base stage of power tube, the emitter of power tube connects power supply, the collector of power tube is as the output of signal amplification circuit, between the power supply of signal amplification circuit and ground, connect an electric capacity,

The control end of the output connecting electronic relay of signal amplification circuit, two terminations of all the other of electronic relay connect the operation circuit in keyboard;

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

2. the keyboard of a kind of machinery-free button according to claim 1, is characterized in that: preposition oscillator is 555 integrated circuit.

3. the keyboard of a kind of machinery-free button according to claim 1, is characterized in that: commissure electric capacity is electrodeless electric capacity.

4. the keyboard of a kind of machinery-free button according to claim 1, is characterized in that: the each button in keyboard connects respectively an input of OR circuit, and the output of OR circuit connects preposition oscillator pin.

5. the keyboard of a kind of machinery-free button according to claim 1, is characterized in that: preposition vibration adds to penetrate with circuit makes integrated form.