CN206179744U

CN206179744U - Relay touch feedback circuit

Info

Publication number: CN206179744U
Application number: CN201621205939.2U
Authority: CN
Inventors: 王伟康; 周张奎
Original assignee: Guangzhou Branch Biotechnology Ltd By Share Ltd
Current assignee: Guangzhou Branch Biotechnology Ltd By Share Ltd
Priority date: 2016-11-08
Filing date: 2016-11-08
Publication date: 2017-05-17
Anticipated expiration: 2026-11-08

Abstract

The utility model discloses a relay touch feedback circuit, including installing touch test capacitor, touch detection module, relay module and the output module on a PCB board, relay module includes switch tube and relay, the relay include relay coil and with relay coil complex relay switch, the touch test capacitor is through the control end electric connection of touch detection module with the switch tube, the output ground connection of switch tube, the input of switch tube passes through a relay coil and a power electric connection, relay switch's fixed contact and output module's common port electric connection, relay switch's stationary contact meets with output module's break -make sense terminal. The utility model discloses standardized production can be realized to the button, and button preparation simple process through the relay simulation, can accomplish that touch button has the sound and has vibrations, makes the people have the sensation of pressing under key.

Description

A kind of relay touches feedback circuit

Technical field

The utility model belongs to touch feedback button technical field, more particularly to a kind of relay touches feedback circuit.

Background technology

The use of more button is at present mechanical key, widely, button is used the use scope of mechanical key Frequency it is also very high.The use mechanical key of many number of times, makes button easily produce senile abrasion for a long time, so as to cause Insensitive or malfunctioning switch is switched, it is necessary to firmly press switch during using mechanical key, for needing switch to connect on time, meeting It is more painstaking.

Utility model content

In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of relay to touch feedback electricity Road.

The purpose of this utility model is realized using following technical scheme：

A kind of relay touches feedback circuit, including is installed on touch detection electric capacity, touch detection mould on a pcb board Block, relay module and output module；The relay module includes switching tube and relay, and the relay includes relay Coil and the relay switch coordinated with relay coil, the touch detection electric capacity is by touch detection module and switching tube Control end is electrically connected with, the output head grounding of the switching tube, and the input of the switching tube is by relay coil and an electricity Source is electrically connected with；The fixed contact of relay switch is electrically connected with the common port of output module；The relay switch it is quiet Contact connects with the break-make test side of output module.

Preferably, the switching tube is triode.Its type for further disclosing switching tube.

Preferably, the relay module also includes resistance R6 and diode；The output end of the touch detection module is led to Cross resistance R6 to be electrically connected with the base stage of triode, the grounded emitter of the triode, the positive pole and relay line of diode One end of circle is electrically connected with the colelctor electrode of triode；The negative pole of diode and the other end of relay coil with power supply phase Connect.

Preferably, the relay switch is normal open switch.

Preferably, the relay switch is single-pole double-throw switch (SPDT), and the single-pole double-throw switch (SPDT) includes movable contact, Yi Jiyu Normally opened contact and normally-closed contact that the movable contact coordinates, the movable contact is connected to the common port of output module, described normally opened Contact is connected to the break-make test side of output module by a path, and the normally-closed contact is connected to output module by an open circuit Break-make test side.

Preferably, the relay switch is double-point double-throw switch, and the double-point double-throw switch includes the first movable contact, the The first normally opened contact that two movable contacts are engaged with first movable contact and the first normally-closed contact and dynamic with described second The second normally opened contact and the second normally-closed contact that contact is engaged, first movable contact and the second movable contact are connected to output The break-make that the common port of module, first normally opened contact and the second normally opened contact are connected to output module by a path is examined End is surveyed, first normally-closed contact and the second normally-closed contact are connected to the break-make test side of output module by an open circuit.

Preferably, the touch detection electric capacity Kin is an aluminium flake.

Preferably, also including pcb board shell, the pcb board outer cover suit is on pcb board.

Compared to existing technology, the beneficial effects of the utility model are：

The utility model button can realize standardized production, and key manufacturing process is simple, its can change press at present by Key needs traditional approach firmly；And by relay simulate, can accomplish that touch key-press just has sound and has vibrations, made one by The sensation of lower button, reaches unanimity in experience with conventional keys.And the utility model relay simulates touch key Gently touch key-press position need not be only firmly needed, for also need to can easily be used by being bonded on time, in button appearance, plus One layer of plastic casing, while decoration functions can be had.For conventional keys, this novel buttons does not result in abrasion, service life It is longer.

Brief description of the drawings

Fig. 1 is the circuit diagram of the touch detection module that a kind of relay of the utility model touches feedback circuit；

Fig. 2 is the circuit diagram of the relay module that a kind of relay of the utility model touches feedback circuit；

A kind of relay of Fig. 3 the utility model touches the circuit diagram of the output module of feedback circuit；

Fig. 4 is the structure chart of pcb board shell of the present utility model.

Reference：1st, pcb board shell.

Specific embodiment

Below, with reference to accompanying drawing and specific embodiment, the utility model is described further：

As shown in Figure 1 and Figure 4, present embodiments provide a kind of relay and touch feedback circuit, including be installed on a pcb board On touch detection module, relay module and output module, also including pcb board shell 1, the pcb board shell 1 is covered on On pcb board, and gluing is fixed, and in the region of button to be mounted needed for being then installed on, it can also play a part of decoration；

The touch detection module include resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, electric capacity C1, electric capacity C2, Electric capacity C3, touch detection electric capacity Kin and touch chip U1, and the touch detection electric capacity Kin is an aluminium flake, when finger pressing When going down, (change) of electric capacity can be sensed, so as to produce a signal to send to touch chip U1；The aluminium flake energy The sensitivity of capacitance detecting is enough improved, a power end VDD is connected by resistance R2 with 1 end of touch chip U1, touch chip U1 2 ends ground connection, 3 ends of touch chip U1 connect with touch detection electric capacity Kin, and 3 ends of touch chip U1 are grounded by electric capacity C3, 6 ends of touch chip U1 are grounded by resistance R4, and 6 ends of touch chip U1 are electrically connected with by resistance R3 and power end VDD, are touched The 5 of control chip U1 are electrically connected with power vd D, and 4 ends of touch chip U1 are grounded by resistance R1,4 ends of touch chip U1 It is grounded by electric capacity C1,4 ends of touch chip U1 are electrically connected with one end of resistance R5, the other end of resistance R5 and electric capacity C2's One end is electrically connected with power end VDD, the other end ground connection of electric capacity C2.

As shown in Figures 2 and 3, the relay module include triode, resistance R6, diode D1, relay coil and after Electric switch, the output end of the touch detection module is electrically connected with by resistance R6 with the base stage of triode, the triode Grounded emitter, the positive pole of diode and one end of relay coil are electrically connected with the colelctor electrode of triode；Diode Negative pole and the other end of relay coil connect with a power end；The relay switch is single-pole double-throw switch (SPDT), described Single-pole double-throw switch (SPDT) includes movable contact and the normally opened contact and normally-closed contact that coordinate with the movable contact, and the movable contact connects The common port of output module is connected to, the normally opened contact is connected to the break-make test side of output module by a path, described normal Closed contact is connected to the break-make test side of output module by an open circuit.Wherein relay switch can also be opened for DPDT Close, its circuit stability that can be further ensured that the structure can when wherein one path has loose contact Enable that the signal is transferred out with by another path；The relay switch is double-point double-throw switch, and the double-pole is double The first normally opened contact and first that throw switch is engaged including the first movable contact, the second movable contact with first movable contact are normal Closed contact and the second normally opened contact and the second normally-closed contact that are engaged with second movable contact, first movable contact With the common port that the second movable contact is connected to output module, first normally opened contact and the second normally opened contact lead to by one Road is connected to the break-make test side of output module, and first normally-closed contact and the second normally-closed contact are connected to by an open circuit The break-make test side of output module.NO in above-mentioned said normally opened contact as circuit diagram, normally-closed contact is in circuit diagram NC, and the contact at NC ends do not welded, and the contact at NO ends is welded；Wherein J1, J2 and J3 end are used to be sent out to an Android mainboard Whether the number of delivering letters touches the button to feed back to have.

The operation principle of the present embodiment：

In the explanation of the present embodiment principle, relay switch uses double-point double-throw switch；The touch detection mould of the present embodiment Block is operated using touch chip U1 and touch detection electric capacity Kin, and it is for detecting whether someone touches the button；Work as hair Whether raw touch, and capacitance variations occur at touch detection electric capacity Kin, and touch chip U1 detects the capacitance variations, and sends One voltage signal is to relay module；The voltage signal drives the triode of relay module, and turns it on, and triode is led When logical, the coil electricity magnetisation of relay can adsorb switch, and make it that closure is contacted with normally opened contact, now, K1's in Fig. 2 Label 6 comes in contact with 5, and 4 come in contact with 3, convert contact-making switch during, relay can vibrate and have with Sound, gives people a kind of feel for pushing button.When in normally off, exported because common port is pulled up, be now one The state of individual high level, and when energization relay switch is closed, that is to say when in normally open, due to normally opened State upper contact welds together, so be now have a low level on circuit, and Low level effective, so it is i.e. detectable true Recognize now button and belong to the state for being touched, the signal transmission to Android mainboard or other control master controls are carried out follow-up Operation.

It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various It is corresponding to change and deformation, and all these change and deformation should all belong to the protection of the utility model claim Within the scope of.

Claims

1. a kind of relay touches feedback circuit, it is characterised in that including be installed on a pcb board touch detection electric capacity, touch Touch detection module, relay module and output module；The relay module includes switching tube and relay, the relay bag Include relay coil and with relay coil coordinate relay switch, the touch detection electric capacity by touch detection module with The control end of switching tube is electrically connected with, the output head grounding of the switching tube, and the input of the switching tube passes through relay line Circle is electrically connected with a power supply；The two ends of the relay switch are respectively connecting to the common port and output module of output module Break-make test side.

2. relay as claimed in claim 1 touches feedback circuit, it is characterised in that the switching tube is triode.

3. relay as claimed in claim 2 touches feedback circuit, it is characterised in that the relay module also includes resistance R6 and diode；The output end of the touch detection module is electrically connected with by resistance R6 with the base stage of triode, three pole The grounded emitter of pipe, the positive pole of diode and one end of relay coil are electrically connected with the colelctor electrode of triode；Two poles The negative pole of pipe and the other end of relay coil connect with power supply.

4. relay as described in claim any one of 1-3 touches feedback circuit, it is characterised in that the relay switch is Normal open switch.

5. relay as described in claim any one of 1-3 touches feedback circuit, it is characterised in that the relay switch is Single-pole double-throw switch (SPDT), the single-pole double-throw switch (SPDT) includes movable contact and the normally opened contact and normally closed coordinated with the movable contact Contact, the movable contact is connected to the common port of output module, and the normally opened contact is connected to output module by a path Break-make test side, the normally-closed contact is connected to the break-make test side of output module by an open circuit.

6. relay as described in claim any one of 1-3 touches feedback circuit, it is characterised in that the relay switch is Double-point double-throw switch, the double-point double-throw switch includes that the first movable contact, the second movable contact are engaged with first movable contact The first normally opened contact and the first normally-closed contact and the second normally opened contact and second that are engaged with second movable contact it is normal Closed contact, first movable contact and the second movable contact are connected to the common port of output module, first normally opened contact and Second normally opened contact is connected to the break-make test side of output module by a path, first normally-closed contact and second normally closed Contact is connected to the break-make test side of output module by an open circuit.

7. the relay as described in claim any one of 1-3 touches feedback circuit, it is characterised in that the touch detection electric capacity It is an aluminium flake.

8. the relay as described in claim any one of 1-3 touches feedback circuit, it is characterised in that also including pcb board shell, The pcb board casing cover is on pcb board.