CN214588623U

CN214588623U - Instant-action time relay

Info

Publication number: CN214588623U
Application number: CN202120736210.2U
Authority: CN
Inventors: 赵涛
Original assignee: Jiangsu Vocational College of Information Technology
Current assignee: Wuxi Ailite Engineering Equipment Co ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-11-02
Anticipated expiration: 2031-04-12

Abstract

The utility model provides a transient type time relay, including power return circuit, display circuit, timing return circuit and output circuit. The instant time relay of the utility model is realized by adopting a resistance-capacitance voltage reduction mode in the power supply part, thereby simplifying the internal circuit, improving the production efficiency and the yield of manufacturers and reducing the production and maintenance cost; the general programmable timing integrated circuit adopted by the delay control part has the characteristics of less required peripheral elements, high stability, delay accuracy, high accuracy and consistency and the like. Therefore, the instantaneous time relay is accurate in time delay, simple in structure and high in universality.

Description

Instant-action time relay

Technical Field

The utility model belongs to the electronic equipment field, concretely relates to wink dynamic type time relay.

Background

The instant time relay (hereinafter referred to as relay) has a pair of time-delay normally closed and normally open contacts and a pair of instant normally closed and normally open contacts. After the relay is electrified, the delay contact does not act, and the instantaneous contact acts; and after the delay time reaches, the delay contact acts, and the state of the instantaneous contact is kept. The relay has the characteristics of small volume, light weight, compact structure and the like, and is widely used as a delay control unit for automatic control systems which require high precision and high reliability, such as machine tool automatic control, complete equipment automatic control and the like.

The production process of the instantaneous time relay produced by various manufacturers is relatively complicated, the production efficiency is low, and the product performances of the relay, such as accuracy, universality and reliability, need to be improved. In order to meet the requirements of users on low use cost, high reliability, high accuracy and the like of the time relay, the production efficiency and the yield of manufacturers are improved, the production and maintenance cost is reduced, and the redesign of the instantaneous time relay has important practical significance and commercial value.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a transient time relay, the power supply part of which is realized by adopting a resistance-capacitance voltage reduction mode, thereby simplifying the internal circuit and improving the production efficiency; the time delay control part adopts a universal programmable timing integrated circuit, so that the time delay is accurate, the structure is simple, and the universality is stronger.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a transient type time relay, include:

the timing loop comprises a general programmable timing integrated circuit IC1, provides a delay function for the instantaneous time relay, and outputs a high-level trigger signal to the output loop after the delay time is reached;

the output circuit comprises two groups of intermediate relays, after the output circuit is electrified, the first group of intermediate relays acts, and the second group of intermediate relays does not act; the second group of intermediate relays acts after the delay time is reached;

the display loop comprises two light emitting diodes and is used for indicating the real-time working state of the instantaneous time relay;

and the power supply loop is used for reducing and rectifying the input alternating voltage into direct voltage through resistance-capacitance to supply power to the display loop, the timing loop and the output loop.

The timing loop is composed of a general programmable timing integrated circuit IC1, a resistor R6, capacitors C5-C7 and a potentiometer R5; wherein the model number of the programmable timing integrated circuit IC1 is CD4541 BE; different delay ranges of the instantaneous time relay are realized through combination of different resistance values of the resistor R6 and different capacities of the capacitors C5-C7, and delay time required by a user is set through the adjustment of the potentiometer R5; after the delay time is reached, pin 8 of the programmable timing integrated circuit IC1 outputs a high level signal to drive the output loop to act.

The output circuit consists of intermediate relays K1A, K2A, diodes D4 and D7, a resistor R7 and a triode Q1; after the instantaneous time relay is electrified, the coil of the intermediate relay K2A is attracted, the contact state is switched, the timing loop outputs low level, the triode Q1 is in a cut-off state, and the coil of the intermediate relay K1A is in a release state; after the delay time is reached, a high-level trigger signal output by the timing loop drives the triode Q1 to be conducted, the coil of the intermediate relay K1A is attracted, the contact state is switched, and the resistor R7 is a base current-limiting resistor of the triode Q1.

The display loop comprises a power supply working state indication part and a relay switching state indication part; the power supply working state indicating part consists of a resistor R9 and a light-emitting diode D6, and the light-emitting diode D6 is lightened after the instantaneous time relay is electrified to work, so that the power supply working state is displayed for a user; the relay conversion state indicating part consists of a resistor R8 and a light-emitting diode D5, and in the process of delaying the instantaneous time relay, the light-emitting diode D5 is in an extinguishing state; after the delay time is reached, a high-level trigger signal output by the timing loop drives the triode Q1 to be conducted, the light-emitting diode D5 is lightened, and the contact switching state of the transient time relay is displayed for a user.

The power supply circuit supplies power to the display circuit, the timing circuit and the output circuit by reducing the input 220V alternating voltage into 15V direct voltage and 9.1V direct voltage through resistance-capacitance voltage reduction, rectification and filtering.

Compared with the prior art, the beneficial effects of the utility model are that:

the instant time relay provided by the utility model is realized by adopting a resistance-capacitance voltage reduction mode in the power supply part, thereby simplifying the internal circuit, improving the production efficiency and the yield of manufacturers and reducing the production and maintenance cost; the general programmable timing integrated circuit adopted by the delay control part has the characteristics of less required peripheral elements, high stability, delay accuracy, high accuracy and consistency and the like. Therefore, the instantaneous time relay is accurate in time delay, simple in structure and high in universality.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic circuit diagram of the present invention;

fig. 2 is a schematic circuit diagram of the power supply circuit of the present invention;

FIG. 3 is a schematic circuit diagram of the timing loop of the present invention;

fig. 4 is a schematic circuit diagram of the display circuit and the output circuit of the present invention;

fig. 5 is a schematic block diagram of the present invention.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments.

The utility model provides a transient time relay (hereinafter referred to as relay), the power supply part of the relay is realized by adopting a resistance-capacitance voltage reduction mode, the internal circuit is simplified, and the production efficiency is improved; the time delay control part adopts a universal programmable timing integrated circuit, so that the time delay is accurate, the structure is simple, and the universality is stronger.

As shown in fig. 1 and 5, the instant time relay provided by the present invention includes four parts, namely, a power supply circuit, a display circuit, a timing circuit, and an output circuit.

The power supply loop is used for carrying out resistance-capacitance voltage reduction, rectification and filtering on the input 220V alternating voltage to obtain 15V and 9.1V direct-current voltage to supply power to other loops.

The display loop represents the working state of the relay through different states of the indicator lights (two light emitting diodes), and provides the working state of the relay for users in real time.

The timing loop is composed of a general programmable timing integrated circuit, a potentiometer, a capacitor, a resistor and the like, provides a delay function for the relay, and outputs a high-level trigger signal to the output loop after the delay time is reached.

The output circuit comprises two groups of intermediate relays, one group of intermediate relays acts after the relays are electrified, and the other group of intermediate relays does not act; and after the delay time is up, the circuit receives a high-level trigger signal of the timing circuit and controls another group of intermediate relays to act.

As shown in fig. 1 and 2, the power supply circuit adopts an ac 220V input, and performs resistance-capacitance voltage reduction to an ac 15V voltage through resistors R1 and R2 and a capacitor C1, a rectifier bridge B1 performs bridge full-wave rectification on the ac 15V voltage, a capacitor C2 filters the rectified voltage, a voltage-stabilizing tube D1 and a voltage-stabilizing tube D2 stabilize the output dc voltage, and the dc 15V voltage is output after secondary filtering through a capacitor C3; the resistors R3 and R4 are used for reducing the direct current 15V voltage, the voltage regulator tube D3 is used for stabilizing the reduced direct current voltage, and the capacitor C4 is used for filtering the stabilized voltage and outputting the direct current 9.1V voltage. The direct current 15V and 9.1V are used for supplying power for other loops.

As shown in fig. 1 and 3, the timing circuit is composed of a general-purpose programmable timing integrated circuit IC1, a resistor R6, capacitors C5 to C7, and a potentiometer R5.

The programmable timing integrated circuit IC1 is in the type of CD4541BE, and has the advantages of multiple timing functions, high precision, few peripheral elements and the like. Different delay ranges of the relay are realized through combination of different resistance values of the resistor R6 and different capacities of the capacitors C5-C7, and delay time required by a user is set through adjusting the potentiometer R5. If the relay delay time is up, 8 pins of the integrated circuit IC1 output high level signals to drive the output loop to operate.

As shown in fig. 1 and 4, the display circuit includes two parts, namely, a power supply working state indication part and a relay switching state indication part, wherein the power supply working state indication part is composed of a resistor R9 and a light emitting diode D6, and the light emitting diode D6 is lightened after the relay is electrified and works to display the power supply working state of the relay for a user. The relay conversion state indicating part consists of a resistor R8 and a light emitting diode D5, in the relay delay process, a timing loop outputs low level, a triode Q1 is in a cut-off state, and therefore the D5 is in an off state; after the relay is delayed, a high-level trigger signal output by the timing loop drives the triode Q1 to be conducted, the light-emitting diode D5 is lightened, and the contact switching state of the relay is displayed for a user.

As shown in fig. 1 and 4, the output circuit is composed of intermediate relays K1A, K2A, diodes D4, D7, a resistor R7 and a transistor Q1. After the relay is electrified, the coil of the intermediate relay K2A is attracted, and the contact state is switched. At the moment, the timing loop outputs low level, the triode Q1 is in a cut-off state, and the coil of the intermediate relay K1A is in a release state; after the delay time is reached, a high-level trigger signal output by the timing loop drives the triode Q1 to be conducted, the coil of the intermediate relay K1A is attracted, the contact state is switched, and the resistor R7 is a base current-limiting resistor of the triode Q1.

The instant time relay provided by the utility model is realized by adopting a resistance-capacitance voltage reduction mode in the power supply part, thereby simplifying the internal circuit, improving the production efficiency and the yield of manufacturers and reducing the production and maintenance cost; the universal programmable timing integrated circuit CD4541 adopted by the delay control part has the characteristics of less required peripheral elements, high stability, delay accuracy, high accuracy and consistency and the like. Therefore, the instantaneous time relay is accurate in time delay, simple in structure and high in universality.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. A snap-action time relay, comprising: the timing loop comprises a general programmable timing integrated circuit IC1, provides a delay function for the instantaneous time relay, and outputs a high-level trigger signal to the output loop after the delay time is reached; the output circuit comprises two groups of intermediate relays, after the output circuit is electrified, the first group of intermediate relays acts, and the second group of intermediate relays does not act; the second group of intermediate relays acts after the delay time is reached; the display loop comprises two light emitting diodes and is used for indicating the real-time working state of the instantaneous time relay; and the power supply loop is used for reducing and rectifying the input alternating voltage into direct voltage through resistance-capacitance to supply power to the display loop, the timing loop and the output loop.

2. A snap-action time relay according to claim 1, characterized in that: the timing loop is composed of a general programmable timing integrated circuit IC1, a resistor R6, capacitors C5-C7 and a potentiometer R5; wherein the model number of the programmable timing integrated circuit IC1 is CD4541 BE; different delay ranges of the instantaneous time relay are realized through combination of different resistance values of the resistor R6 and different capacities of the capacitors C5-C7, and delay time required by a user is set through the adjustment of the potentiometer R5; after the delay time is reached, pin 8 of the programmable timing integrated circuit IC1 outputs a high level signal to drive the output loop to act.

3. A snap-action time relay according to claim 1, characterized in that: the output circuit consists of intermediate relays K1A, K2A, diodes D4 and D7, a resistor R7 and a triode Q1; after the instantaneous time relay is electrified, the coil of the intermediate relay K2A is attracted, the contact state is switched, the timing loop outputs low level, the triode Q1 is in a cut-off state, and the coil of the intermediate relay K1A is in a release state; after the delay time is reached, a high-level trigger signal output by the timing loop drives the triode Q1 to be conducted, the coil of the intermediate relay K1A is attracted, the contact state is switched, and the resistor R7 is a base current-limiting resistor of the triode Q1.

4. A snap-action time relay according to claim 1, characterized in that: the display loop comprises a power supply working state indication part and a relay switching state indication part; the power supply working state indicating part consists of a resistor R9 and a light-emitting diode D6, and the light-emitting diode D6 is lightened after the instantaneous time relay is electrified to work, so that the power supply working state is displayed for a user; the relay conversion state indicating part consists of a resistor R8 and a light-emitting diode D5, and in the process of delaying the instantaneous time relay, the light-emitting diode D5 is in an extinguishing state; after the delay time is reached, a high-level trigger signal output by the timing loop drives the triode Q1 to be conducted, the light-emitting diode D5 is lightened, and the contact switching state of the transient time relay is displayed for a user.

5. A snap-action time relay according to claim 1, characterized in that: the power supply circuit supplies power to the display circuit, the timing circuit and the output circuit by reducing the input 220V alternating voltage into 15V direct voltage and 9.1V direct voltage through resistance-capacitance voltage reduction, rectification and filtering.