RU1823027C - Electromagnetic relay - Google Patents

Abstract

The invention relates to electrical engineering, in particular to logic device circuits. The electromagnetic relay is equipped with an additional spring, which, when the relay operates, begins to interact with the core after opening the contacts of the opening group, but before closing the contacts of the closing group. The spring is connected to the core through the pusher or the pull rod and this connection has a free stroke. The proposed scheme allows us to realize the logical functions of tit at Xn f Xn 1 of four variables. 1il.

Description

Joint venture

with

The invention relates to electroautomatics and can be applied in automatic control circuits, protection devices, relay logic devices and other circuits.

The purpose of the invention is to expand the logic of an electromagnetic relay.

The drawing shows a diagram of an electromagnetic relay.

The relay contains a magnetic circuit 1 of an electromagnet. A winding 2 is located on the magnetic circuit. The rotary core 3 is pivotally attached to the magnetic circuit 1, a return spring 4 is attached to the root 3, the return spring is attached to the relay case with the other end. A pusher 5 is also attached to the base. On which, at a certain distance ai from the push rod 5, there is a spring 7, which is attached at one end to the relay housing and the other end of the spring 7 is located between two adjusting pins attached to the relay housing. The distance ai is determined

from the relation: ai - O. .-, where b is the gap

make contacts: - distance from the axis of rotation of the core to the point of contact of the contact I distance from the axis of rotation of the core to the point of contact of the push rod 5 and spring 7. The movable contacts 9 and 10, insulated from each other, are attached to the end of the core 3. Fixed Contacts 11 and 12 are attached to the relay housing. Contacts 9 and 11 are reset from the opening contact group, and contacts 10 and 12 form a closing contact group.

Elyuyu magnetic relay operates as follows.

When the winding 2 is supplied with an electric signal, the value of which is denoted by Ji, measles 3 overcomes the force of the return spring 4 and begins to move in the direction of the magnetic conduit 1, open

00

go so

N3

Vj

contacts of the rpm contact group 9.11. the pusher 5 abuts against the additional spring 7, the contacts 10, 12 of the closing contact group remain in the open state. Anchor 3 remains in an intermediate position. Contacts 9, 11 of the opening contact group are in the open state, contacts 10, 12 of the closing contact group are also in the open state.

When the electrical signal is subsequently fed into winding 2, the value of which is denoted by J2, where Jj Ji, core 3 overcomes the force of the additional spring 7 and is attracted to the magnetic circuit 1, contacts 10, 12 of the closing contact group are closed, and contacts 9, 11 of the opening group of contacts remain in the open state.

When the signal is removed from winding 2, the relay returns to its initial state: contacts 9. 11 are closed, contacts 10, 12 are opened.

Thus, when an electrical signal of value J is applied to the coil of the electromagnetic relay, the contacts 9.11 of the opening contact group are opened, and the contacts 10, 12 of the closing contact group are not yet closed. When a signal is fed to the coil of an electromagnetic relay with a value of J2, contacts 10, 12 are closed

the closing contact group, and the contacts 9, 11 of the opening contact group remain open. When a signal is removed from the coil of an electric relay, the relay returns to its original state. The relay implements logical functions: the closing contact group implements the logical function у - Х1АХ2, and the opening contact group implements the logical

function y - xs 1x4.

Claims (1)

SUMMARY OF THE INVENTION An electromagnetic relay comprising an electromagnet with a core, a contact system and two springs that alternate in operation, wherein one of the springs is connected to the core, characterized in that, in order to expand the logic capabilities of the relay by introducing a stable intermediate position of the movable contact of the contact system and the use of two values of the operating current of the relay winding, it is equipped with a pusher and two adjustment pins, and the adjustment pins are fixed in the relay case, the other of the specified of the springs with one end installed between the adjusting pins, and the other is fixed to the housing, while the pusher is fixed to the bark with the ability to interact with another spring, and 3 and VVWV000 T y eleven