CN202143043U - Single button control switch with self-locking function - Google Patents

Abstract

The present utility model belongs to the electronic technology field, and relates to a single button control switch with a self-locking function. The control switch is composed of a direct current power supply DC, a unidirectional silicon controlled rectifier SCR1 trigger circuit, and a unidirectional silicon controlled rectifier SCR2 trigger circuit and control circuit. The switch is characterized in that the unidirectional silicon controlled rectifier SCR1 trigger circuit is composed of a key switch AN, a unidirectional silicon controlled rectifier SCR1, a small electric bulb HL, a resistor R1, a resistor R2, a silicon rectifier diode D2 and an electrolytic capacitor C1; and the unidirectional silicon controlled rectifier SCR2 trigger circuit and control circuit is composed of a unidirectional silicon controlled rectifier SCR2, a key switch AN, a silicon rectifier diode D1 and a relay J. The ordinary mechanical self-locking boat form switch or toggle switch has the shortages that the operational movement differs from person to person, the contact is easily vibrated, ablated and abraded, etc. In the control switch, the single key switch is used, the control circuit can be connected by pressing the key switch once, and the control circuit can be cut off by pressing the key switch again. As the control switch is effectively isolated by strong and weak current, the power supply of the controlled load can be alternating current or direct current, thus the control switch can be used in household electrical appliances and industrial automation fields.

Description

Singly-bound control switch with auto-lock function

Technical field

The utility model belongs to electronic technology and control technology field, is the singly-bound control switch that has auto-lock function about a kind of.

Background technology

The shortcoming of standard machinery self-locking ship type switch or toggle switch is: action is mechanical, operational motion varies with each individual and the contact is prone to shake.In addition, because the mechanical self-latching type switch is through the continuous impact of long-term big electric current, the as easy as rolling off a log ablation in the contact of mechanical self-latching type switch, wearing and tearing.In order to overcome the many disadvantages of the congenital existence of existing machinery self-locking switch, research, to make a kind of singly-bound control switch with auto-lock function necessary.

Through kinds of schemes test, relatively and analyze, the utility model only uses a small amount of common components and parts to realize having the control switch of auto-lock function with single key switch, that is: press the one-touch ON-OFF control circuit and connect, and presses a control circuit cut-out again.This control switch adopts discrete component to make, and is made up of light current control section and power output control two parts.Because of effective isolation of strong, weak electricity, thereby the power supply of load can use alternating current, also can use direct current, and it has purposes widely in household electrical appliance and industrial automation and light, mechanical, electrical integrated field.The described singly-bound control switch with auto-lock function 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 correlation technique content that the described singly-bound control switch with auto-lock function of the utility model relates 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 standard machinery self-locking ship type switch or toggle switch.The utility model only uses a small amount of common components and parts to realize having the control requirement of auto-lock function with single key switch, that is: press the one-touch ON-OFF control circuit and connect, and is cut off by the one-touch ON-OFF control circuit again.The utility model is because of having effective isolation of strong, weak electricity, thereby the power supply of controlled load can use AC power, also can use DC power supply, and it extensively is used in household electrical appliance and industrial automation and light, mechanical, electrical integrated field.The described singly-bound control switch with auto-lock function of the utility model has well overcome the various defectives that the mechanical self-latching type switch exists.

Technical characterictic: have the singly-bound control switch of auto-lock function, be made up of DC power supply DC, unidirectional controllable silicon S CR1 and circuits for triggering thereof, unidirectional controllable silicon S CR2 circuits for triggering and control circuit thereof, its characteristic comprises:

Unidirectional controllable silicon S CR1 and circuits for triggering thereof are made up of key switch AN, unidirectional controllable silicon S CR1, small electric bulb HL, resistance R 1 and resistance R 2, silicon rectifier diode D2 and electrochemical capacitor C1; Its annexation is: the anode of unidirectional controllable silicon S CR1 connects the end of key switch AN; The anodal VCC of another termination DC power supply DC of key switch AN; The negative electrode of unidirectional controllable silicon S CR1 connects the end of small electric bulb HL, the other end connection circuit ground GND of small electric bulb HL, the end of the control utmost point connecting resistance R1 of unidirectional controllable silicon S CR1; The negative pole of another termination silicon rectifier diode D2 of resistance R 1 and the positive pole of electrochemical capacitor C1; The end of the anodal connecting resistance R2 of silicon rectifier diode D2, the other end order of resistance R 2 be to the negative electrode of controllable silicon SCR 2, the negative pole connection circuit ground GND of electrochemical capacitor C1;

Unidirectional controllable silicon S CR2 circuits for triggering and control circuit thereof are made up of unidirectional controllable silicon S CR2, key switch AN, silicon rectifier diode D1 and relay J; Its annexation is: the anode of unidirectional controllable silicon S CR2 meets the anodal VCC of DC power supply DC; The control utmost point of unidirectional controllable silicon S CR2 connects the negative pole of silicon rectifier diode D1; The positive pole of silicon rectifier diode D1 connects the end of key switch AN; The anodal VCC of another termination DC power supply DC of key switch AN, the negative electrode of unidirectional controllable silicon S CR2 is succeeded an end of the coil of electrical equipment J, the other end connection circuit ground GND of the coil of relay J;

The negative pole connection circuit ground GND of DC power supply DC.

The operation principle of circuit: after circuit is connected DC power supply, when not pressing key switch AN, not conducting of unidirectional controllable silicon S CR2, relay J is failure to actuate, and is equivalent to " disconnection " state.When pressing one-touch switch AN, 12V voltage makes its conducting through key switch AN, silicon rectifier diode D1 for unidirectional controllable silicon S CR2 provides trigger current, and the coil of relay J gets the electric contact adhesive, the contacting loaded work piece of relay J.Because electrochemical capacitor C1 voltage can not suddenly change, so when pushing button switch AN, unidirectional controllable silicon S CR1 can conducting, electric current charges to electrochemical capacitor C1 through resistance R 2, silicon rectifier diode D2.If when pushing button switch AN once more; Voltage on the electrochemical capacitor C1 is as the trigger voltage of unidirectional controllable silicon S CR1 at this moment; When key switch AN presses, can make unidirectional controllable silicon S CR1 conducting, the anode voltage moment reduction of unidirectional controllable silicon S CR2; Unidirectional controllable silicon S CR2 is ended, and the contact of relay J discharges.Electrochemical capacitor C1 discharges through the control utmost point, the negative electrode of resistance R 1, unidirectional controllable silicon S CR1, and circuit returns to original state, thereby realizes the contact self-locking of relay J.

Description of drawings

Accompanying drawing 1 is that the utility model provides an embodiment circuit working schematic diagram with singly-bound control switch of auto-lock function; Dc power anode links to each other with circuit anode VCC; The negative pole connection circuit ground GND of DC power supply.

Embodiment

According to circuit working schematic diagram and the description of drawings of using singly-bound control switch shown in the accompanying drawing 1 with auto-lock function; 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

SCR1, SCR2 are one-way SCR, and its model is MCR100-8;

D1, D2 are silicon rectifier diode, and its model is selected 1N4001 for use;

Resistance uses metalfilmresistor, and power is 1/8W, and the resistance of resistance R 1, resistance R 2 is: 4.7K Ω; C1 is an electrochemical capacitor, and its capacity is: 100 μ F/16V;

J is a relay, and its technical parameter is DC12V, and the direct current resistance of coil windings >=850 Ω can be selected JRC-5M for use, also can select the contact capacity of relay J according to the actual power of load for use;

HL is the small electric bulb that 12V, 0.3A flashlight are used; AN is an one pole key switch open in usual.

The making of circuit and debugging

Very simple because of the circuit structure of singly-bound control switch with auto-lock function, make than be easier to, it is general that the physical connection of components and parts is correct as long as the components and parts performance of use is intact, circuit need not debugged just can operate as normal.

In circuit debugging, should adjust the numerical value of resistance R 1, resistance R 2 and electrochemical capacitor C1 repeatedly, make when pushing button switch AN, circuit can misoperation.Require relay J after release, wait 2 seconds again by pressing key switch AN, then the relay J in the circuit could the reliable electrician of getting be done.

This circuit the negative electrode of unidirectional controllable silicon S CR1 to circuit connect a 12V bulb as load, be unlikely to unidirectional controllable silicon S CR1 like this time through big electric current, as: 12V voltage damages when directly being added in unidirectional controllable silicon S CR1 two ends.

Claims (1)

1. the singly-bound control switch with auto-lock function is made up of DC power supply DC, unidirectional controllable silicon S CR1 and circuits for triggering thereof, unidirectional controllable silicon S CR2 circuits for triggering and control circuit thereof, and its characteristic comprises:

Unidirectional controllable silicon S CR1 and circuits for triggering thereof are made up of key switch AN, unidirectional controllable silicon S CR1, small electric bulb HL, resistance R 1 and resistance R 2, silicon rectifier diode D2 and electrochemical capacitor C1; Its annexation is: the anode of unidirectional controllable silicon S CR1 connects the end of key switch AN; The anodal VCC of another termination DC power supply DC of key switch AN; The negative electrode of unidirectional controllable silicon S CR1 connects the end of small electric bulb HL, the other end connection circuit ground GND of small electric bulb HL, the end of the control utmost point connecting resistance R1 of unidirectional controllable silicon S CR1; The negative pole of another termination silicon rectifier diode D2 of resistance R 1 and the positive pole of electrochemical capacitor C1; The end of the anodal connecting resistance R2 of silicon rectifier diode D2, the other end order of resistance R 2 be to the negative electrode of controllable silicon SCR 2, the negative pole connection circuit ground GND of electrochemical capacitor C1;

Unidirectional controllable silicon S CR2 circuits for triggering and control circuit thereof are made up of unidirectional controllable silicon S CR2, key switch AN, silicon rectifier diode D1 and relay J; Its annexation is: the anode of unidirectional controllable silicon S CR2 meets the anodal VCC of DC power supply DC; The control utmost point of unidirectional controllable silicon S CR2 connects the negative pole of silicon rectifier diode D1; The positive pole of silicon rectifier diode D1 connects the end of key switch AN; The anodal VCC of another termination DC power supply DC of key switch AN, the negative electrode of unidirectional controllable silicon S CR2 is succeeded an end of the coil of electrical equipment J, the other end connection circuit ground GND of the coil of relay J;

The negative pole connection circuit ground GND of DC power supply DC.

Images