An in-line electronic intermediate relay

Abstract

The invention discloses a direct insert type electronic intermediate relay and belongs to the technical field of relays. The direct insert type electronic intermediate relay comprises a shell (1), a trigger signal input end and terminals of contacts, wherein the trigger signal input and the terminals of the contacts are drawn from the shell (1). The direct insert type electronic intermediate relay is characterized in that multiple groups of contacts are arranged, and each group comprises a normally open contact and a normally closed contact; each of the normally open contact and the normally closed contact comprises a controlled power electronic device or / and circuit provided with a control end; a normally open contact control module and a normally closed contact control module are also arranged; the trigger signal input end is simultaneously connected to the input ends of the normally open contact control module and the normally closed contact control module; the output ends of the normally open contact control module and the normally closed contact control module are respectively connected to the control ends of the normally open contact and the normally closed contact. The direct insert type electronic intermediate relay can be directly inserted into an intermediate relay base, and the contacts and the normally open contacts and the normally closed contacts which are simultaneously included in the contacts are realized by an electronic circuit.

Description

technical field [0001] An in-line electronic intermediate relay belongs to the technical field of relays. Background technique [0002] The intermediate relay is a commonly used electrical component in the industrial field. Its main function is to increase the number and capacity of contacts in the relay protection and automatic control system, and to transmit intermediate signals in the control circuit. In the prior art, the intermediate relays are generally conventional mechanical structures, which are mainly composed of fixed iron core, moving iron core, spring, moving contact, static contact, coil, terminal and shell, etc. The main working principle is as follows: : When a voltage is applied to the relay coil and is equal to or greater than the operating voltage, the armature is attracted by the electromagnetic force against the iron core, and the contact piece is pushed by the top plate of the armature, and the contact is connected, disconnected or converted to the cont...

AI Technical Summary

Problems solved by technology

However, the "electronic switch" products in the prior art generally have the following defects: the existing "electronic switch" products generally only have one (or one set) of normally open contacts, that is, when the voltage at the input terminal reaches the trigger condition, The switching state of its output terminal changes from the on state to the closed state, so it cannot be used under the working conditions that require normally closed contacts

At the same time, the existing "electronic switch" products have a large volume because they have to carry a large passing current. Even if they do not need normally closed contacts, they cannot be directly plugged into the base of the intermediate relay to replace the conventional one. Use of mechanical intermediate relays

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