RU2449407C1 - Electromagnetic relay with switching contacts - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: electromagnetic relay with switching contacts consists of core made of soft magnetic material, armature made of soft magnetic material, winding made of wire, return spring, pair of normally open contacts fixed on clamping faces of core and armature and pair of normally closed contacts. Relay normally open contacts are fixed directly on planes of contact of armature and electric magnet core, and normally closed contacts are fixed on contacting planes of armature and armature retainer.

EFFECT: lower energy consumption during relay switching on and shorter time of switching on and off.

3 dwg

Description

The invention relates to electrical engineering, in particular to control devices, and is intended for switching electrical circuits with given changes in electrical input quantities.

An electromagnetic relay with switching contacts, closing one electric circuit and breaking another when voltage is applied to the control coil, is known from the following sources.

1. "Relay protection and automation of power supply systems: Textbook for universities" V.A. Andreev. - 5th ed. - M .: Higher. school, 2007 .-- 639 p.: ill. ISBN 978-5-06-004826-1.

2. Description of the electromagnetic relay on the Internet, for example https://ru.wikipedia.org/wiki/%D0%A0%D0%B5%D0%BB%D0%B5, or https://electricalschool.info/spravochnik/ apparaty / 193-jelektromagnitnye-rele-upravlenija.html.

The closest analogue can be an electromagnetic relay with switching contacts on the first source. The electromagnetic relay with switching contacts contains an electromagnet, an armature, a pusher, a spring and contacts. An electromagnet is a coil of wire wound around a core of magnetic material. Anchor - a plate of magnetic material that controls contacts through a pusher. When an electric current is passed through the winding of an electromagnet, the resulting magnetic field attracts an armature to the core, which displaces through the pusher and thereby closes one group of contacts and opens another group.

With the disappearance of the electric current through the winding of the electromagnet, the electric field in the core and the armature disappears, and under the action of the contacts themselves and the spring, the contacts and the armature come to their original state.

The disadvantage of the electromagnetic relay is the presence of an additional element - a pusher connecting the armature and contacts. When moving the armature both during switching on and off, additional time and energy are spent on moving the pusher.

The invention solves the problem of creating a simple in design electromagnetic relay with switching contacts without additional mechanical connections between the magnet armature and the contacts.

The technical result that is created by the invention is to reduce energy costs when the relay is turned on and to reduce the time for turning on and off.

The essence of the invention lies in the fact that normally open relay contacts are mounted directly on the contact planes of the armature and the core of the electromagnet, and normally closed contacts are on contacting planes of the armature and the armature of the armature.

The invention is illustrated by an example of an electromagnetic relay with switching contacts. Figure 1 shows a patentable relay in the off position; figure 2 is the same, but in the on position.

The patented electromagnetic relay with switching contacts consists of a core 1 made of soft magnetic material, an armature 2, also made of soft magnetic material, a winding 3 made of wire, a return spring 4, a pair of normally open contacts 5 fixed to the closed ends of the core 1 and the armature 2, and a pair of normally closed contacts 6, mounted on the closed ends of the armature 2 and the armature of the armature 7.

Patented relay operates as follows. In the absence of current in the winding 3, the relay is in the position shown in figure 1. In this case, normally closed contacts 6 are closed, and an electric circuit can be closed through them. Normally open contacts 5 are open. When an electric current flows through the winding 3, a magnetic flux occurs in the core 1 and the armature 2, which causes the core 1 and the armature 2 to close, and, accordingly, the movement of the armature 2 will stretch the return spring 4, the normally closed contacts 5 will be closed, which will cause the corresponding electrical circuit and the opening of normally closed contacts 6. The relay will switch to the position shown in figure 2. When the current disappears in the winding 3, in the core 1 and the armature 2, the magnetic flux disappears. The disappearance of the magnetic flux causes the disappearance of the force of magnetic attraction. The return spring 4 moves the armature 2 to the stop, which causes the opening of normally open contacts 5 and the closure of normally closed contacts 6.

Thus, due to the location of normally open contacts on the contact planes of the armature and the core of the electromagnet, and normally closed contacts - on the contacting planes of the armature and the armature of the armature, it was possible to create a simple electromagnetic relay design with switching contacts without additional mechanical connections between the magnet armature and the contacts.

Claims (1)

Electromagnetic relay with switching contacts, consisting of a core and an armature made of soft magnetic material, a winding made of wire and located on the core, a return spring, a pair of normally open contacts, a pair of normally closed contacts, an arm stop, characterized in that the normally open contacts fixed directly on the contact planes of the armature and the core, and normally closed contacts on the contacting planes of the armature and the armature of the armature.

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