CN202385076U - Simple and reliable touch-controlled switch - Google Patents

Abstract

The utility model relates to a simple and reliable touch-controlled switch, which comprises a direct-current power supply with voltage of 12 V, a one-way silicon controlled rectifier (SCR1) trigger circuit, a one-way silicon controlled rectifier (SCR2) trigger circuit, a relay controlled circuit and a load RL (resistor-inductor) circuit. A traditional mechanical self-locking boat-shaped switch or a toggle switch has defects that the action is mechanical, the operation action varies from person to person, the contact is prone to jittering, the contact is easy to burn out and abrade and the like. Only few ordinary components and two touch metal pieces are utilized to realize switching-on or switching-off of the switch controlled by touch; in other words, when a touch electrode 'switch on' is touched once, the load circuit is closed, and when a touch electrode 'switch off' is touched once, the load circuit is cut off. The touch-controlled circuit is all made of split components, and strong currents and weak currents can be isolated through a relay, so that alternating currents or direct currents can be used as load power-supplying power sources. In addition, the simple and reliable touch-controlled switch is of certain use in the fields of household appliances, industrial automation and optical-mechanical-electric integration.

Description

Simple and reliable touch control switch

Technical field

The utility model belongs to the electron controls technology field, is about a kind of simple and reliable touch control switch.

Background technology

The shortcoming of mechanical self-latching type rocker type switch or toggle switch is: action is mechanical, operational motion varies with each individual and switch contact is shaken easily.Because the mechanical self-latching type switch is through the continuous impact of long-term big electric current, the contact of mechanical self-latching type switch is easy to wearing and tearing, ablates.In order to overcome the various defectives of the congenital existence of existing machinery self-locking switch, the utility model design, a kind of touch control switch made from auto-lock function.

The utility model only uses a small amount of common components and parts and two touch electrodes to realize having the control switch of auto-lock function, that is: touch a touch electrode and " drive " load circuit and connect, and touches a touch electrode " pass " load circuit and is cut off.This touch control switch all adopts discrete component to make; Strong, weak electricity control section and power output control waits partly can effective isolation; Thereby the power supply of load can use alternating current; Also can use direct current, it has very big purposes in household electrical appliance and industrial automation and light, mechanical, electrical integrated field.The described simple and reliable touch control switch of the utility model can well overcome the various defectives that the mechanical self-latching type switch exists, and circuit has simple in structure, cheap characteristics.

Below specify the described simple and reliable touch control switch of the utility model related correlation technique content in manufacturing process.

The utility model content

Goal of the invention and beneficial effect: there are defectives such as action machinery, operational motion vary with each individual, the contact is prone to shake, the easy erosion and wear in contact in traditional mechanical self-locking rocker type switch or toggle switch.The utility model only uses a small amount of common components and parts and two touch sheet metals to realize touching opening or closing of control relay, that is: touch a touch electrode and " open " the load circuit connection, touches a touch electrode " pass " load circuit and is cut off.This relay switch all adopts discrete component to make; Strong, weak electricity can pass through the relay effective isolation; Thereby the power supply of load can use alternating current; Also can use direct current, it has purposes widely in household electrical appliance and industrial automation and light, mechanical, electrical integrated field.

The operation principle of circuit: the characteristics of the utility model circuit are the circuits for triggering that the one-way SCR control utmost point does not design the forward one-way SCR; With the directly parallel connection of two groups of identical one-way SCR circuit of circuit structure; The use amount of components and parts has dropped to bottom line, has increased the reliability of circuit." open " when touching a touch electrode, human body sensing voltage makes unidirectional controllable silicon S CR1 triggering and conducting, and load RL gets the electrician and does; When a touch touch electrode " pass ", unidirectional controllable silicon S CR2 conducting, electrochemical capacitor C1 is by momentary charge, and relay J gets electrician's work simultaneously, makes normally-closed contact J-1 break off load RL dead electricity; Close at unidirectional controllable silicon S CR2 and to have no progeny, electrochemical capacitor C1 held time the relay adhesive about 2 seconds through the relay J discharge, guarantee the circuitry cuts action accurately, reliable; When electrochemical capacitor C1 discharge off and relay J gets final product dead electricity, its normally-closed contact J-1 is once more after the closure, because of unidirectional controllable silicon S CR1 has got into cut-off state, so load RL still is in electroless state.

Technical characterictic: simple and reliable touch control switch, to form by 12V DC power supply, unidirectional controllable silicon S CR1 circuits for triggering, unidirectional controllable silicon S CR2 circuits for triggering and control relay circuit, load RL circuit, its characteristic comprises:

Unidirectional controllable silicon S CR1 circuits for triggering: " open " by unidirectional controllable silicon S CR1 and touch electrode and to form; The anode of unidirectional controllable silicon S CR1 is succeeded the fixed contact of electrical equipment J normally-closed contact J-1; The negative electrode of unidirectional controllable silicon S CR1 connects the end of load RL; The other end connection circuit ground GND of load RL, the control utmost point contact of unidirectional controllable silicon S CR1 is touched electrode and " is opened ";

Unidirectional controllable silicon S CR2 circuits for triggering and control relay circuit: form by unidirectional controllable silicon S CR2 and touch electrode " pass ", relay J and electrochemical capacitor C1; The anode of unidirectional controllable silicon S CR2 is succeeded the fixed contact of electrical equipment J normally-closed contact J-1; The negative electrode of unidirectional controllable silicon S CR2 is succeeded an end of electrical equipment J coil and the positive pole of electrochemical capacitor C1; The negative pole of the other end of relay J coil and electrochemical capacitor C1 links to each other with circuit ground GND, and electrode " pass " is touched in the control utmost point contact of unidirectional controllable silicon S CR2;

The anodal VCC of 12V DC power supply succeeds the moving contact of electrical equipment J normally-closed contact J-1, and the negative pole of 12V DC power supply links to each other with circuit ground GND.

Description of drawings

Accompanying drawing 1 is the embodiment circuit working schematic diagram that the utility model provides a simple and reliable touch control switch; Embodiment repeat circuit J uses its normally-closed contact J-1, and the anodal VCC of 12V DC power supply DC links to each other with the moving contact of relay J normally-closed contact J-1, the negative pole connection circuit ground GND of 12V DC power supply.

Embodiment

According to shown in the accompanying drawing 1 with the circuit working schematic diagram and the description of drawings of simple and reliable touch control switch; And according to the annexation between the components and parts in the described each several part circuit of utility model content, and the components and parts technical parameter described in the execution mode requires to implement to realize the utility model.

The selection of components and parts and technical parameter thereof

The model that unidirectional controllable silicon S CR1, SCR2 adopt is MCR100-8;

J is a relay, and its technical parameter is direct current 12V, and the direct current resistance of coil windings >=850 Ω can be selected the relay of JRX-13F or 4098 types for use;

C1 is an electrochemical capacitor, and capacity is 2200～3300 μ F/25V, and its capacity should be confirmed as required;

Touch electrode " opens " and touch electrode " pass " uses the copper sheet metal of 10mm * 10mm to make.

The making of circuit, debugging and use

, circuit production ratio fairly simple because of the circuit structure of simple and reliable touch control switch is easier to, as long as the components and parts performance of using is intact, the physical connection of components and parts is correct, and circuit generally need not carry out any debugging just can operate as normal;

When circuit debugging, should adjust the numerical value of electrochemical capacitor C1 according to actual needs, the capacity of electrochemical capacitor C1 is 2200 μ F, relay J postponed for 2 seconds approximately and discharges; The capacity of electrochemical capacitor C1 is selected 3300 μ F for use, and relay J postponed for 4 seconds approximately and discharges, and guaranteeing that circuit switches not can misoperation;

After requiring relay J to discharge in use, suggestion was waited for 3～4 seconds, touched touch electrode again and " opened ", to guarantee the action message of circuit relay electrical equipment J;

The circuit load current maxima of the described simple and reliable touch control switch of the utility model is 1A, if the suitable relay of selected technology parameter replaces load RL, powerful interchange of may command or DC load.

Claims (1)

1. a simple and reliable touch control switch is made up of 12V DC power supply, unidirectional controllable silicon S CR1 circuits for triggering, unidirectional controllable silicon S CR2 circuits for triggering and control relay circuit, load RL circuit, and its characteristic comprises:

Unidirectional controllable silicon S CR1 circuits for triggering " are opened " by unidirectional controllable silicon S CR1 and touch electrode and are formed; The anode of unidirectional controllable silicon S CR1 is succeeded the fixed contact of electrical equipment J normally-closed contact J-1; The negative electrode of unidirectional controllable silicon S CR1 connects the end of load RL; The other end connection circuit ground GND of load RL, the control utmost point contact of unidirectional controllable silicon S CR1 is touched electrode and " is opened ";

Unidirectional controllable silicon S CR2 circuits for triggering and control relay circuit are made up of unidirectional controllable silicon S CR2 and touch electrode " pass ", relay J and electrochemical capacitor C1; The anode of unidirectional controllable silicon S CR2 is succeeded the fixed contact of electrical equipment J normally-closed contact J-1; The negative electrode of unidirectional controllable silicon S CR2 is succeeded an end of electrical equipment J coil and the positive pole of electrochemical capacitor C1; The negative pole of the other end of relay J coil and electrochemical capacitor C1 links to each other with circuit ground GND, and electrode " pass " is touched in the control utmost point contact of unidirectional controllable silicon S CR2;

The anodal VCC of 12V DC power supply succeeds the moving contact of electrical equipment J normally-closed contact J-1, and the negative pole of 12V DC power supply links to each other with circuit ground GND.

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