SU606175A1 - Electromagnetic relay - Google Patents

Description

(54) ELECTROMAGNETIC RELAY

one

The proposed device relates to the field of relay technology and can be used in the construction of systems for various purposes using relay elements.

Known relays with magnetic contacts on author.St. 357618, in which, when applying control pulses, all contacts are either closed or open.

Sometimes, when building circuits, it is required to have two groups of contacts, which at each moment of time would have the opposite state. in each group.

This is achieved by the fact that the magnets are permanent in different groups of M. .. are attached to the balloon with opposite poles. Versions with a core made of magnetically soft material with a rectangular hysteresis loop are possible. In this case, a relay with one steady state can be obtained if a permanent magnet is applied to M.K. only one group. Using a flexible permanent magnet bent in the shape of figure 8, it is possible to obtain a modification in which different groups of contacts are obtained by placing the M.K. in various cavities formed by magnetite.

FIG. 1 schematically depicts the proposed relay; in fig. 2 - a variant of the relay with one stable state, side view; in fig. 3 - the same, longitudinal section; in fig. 4 is a variant of a relay with a flexible permanent magnet.

Electromagnetic, the relay consists of core 1, made of a material with high residual magnetization, reversible by control coil 2. On one side of core 1 there is a group of locking MCs. 3, the number of which in the group may be different. All MK used in the proposed relay are made closing. The second group, contacts 3 in the example shown in figure 1 / is located on the other side of the core 1. in this group to each M.K.

A constant 4 is applied, magnetized perpendicularly to the axis M, K. As a result, the contacts in this group are open. Permanent magnet 4 is made of sheet material and is attached to M.K. 3 on one side of the working gap 5 M, K. In this case, a permanent magnet 4 is placed between M.K. 3, and flow feed 6..

The variation in FIG. 2 and 3, TeiA is different in that the core 1. is made of a material with an insignificant residual magnetization, but with a rectangular hysteresis loop, and the group of closures M..K. made without permanent magnet 4.

The variant in FIG. 4 is characterized in that the permanent magnet 4 is made of a flexible material and is bent as a figure 8 around M.K. 3. A permanent magnet made of flexible material can be used in the variants in FIG. 1,2,3. - Electromagnetic relay (Fig. 1) works as follows. Since to different groups of M.K. 3, the magnet 4 is adjacent to the opposite poles, then in the region of the gap 5, the fluxes of the magnet 4 send the opposite charge. The flow of the magnet 1 for one group M.K. 3 coincides in direction with the flux of a permanent magnet 4, for another group, M.K. 3 flows directed meetings but. In the first case, M.K. 3 will be closed, in the second - open. To change the state of both groups, M.K. 3, the poles of magnet 1 must be reversed. This is accomplished by applying a current pulse to coil 2 of such a magnitude that the magnetic bias of magnet 1 occurs along the limiting hysteresis loop. A relay with a single steady state (Fig. 2 and 3) works as follows. To activate the relay on coil 2, it is necessary to pass a current of a certain magnitude and direction. In order for the trip contacts of the relay to open, the current created by the current must be directed towards the flow of the permanent magnet 4. If

this flux is sufficient to neutralize the flux of the permanent magnet 4, then the contact springs of M.K. under the force of elasticity open. In addition, the flux must be sufficient to create the mrs. largest spring force, 4TOEfci closing relay contacts closed. If these conditions are met, then the break contacts

the relays will be open, and the closing will be closed. This state of the contacts will be maintained as long as a current flows through the winding 2 of the relay.

As soon as the current stops, the relay contacts return to their original state: the open contacts under the action of the magnetic forces of the permanent magnet 4 are closed, and the closed ones

Claims (3)

contacts under the force of elasticity of the springs open. Invention 1. Electromagnetic relay according to author. 357618, in order to ensure universality in the unification of the design, the relay is made with two groups of magnetically controlled contacts, with permanent magnets in them being applied to the cylinders of the magnetically controlled contacts with opposite poles. 2. Electromagnetic relay according to claim 1, characterized in that, p. In order to obtain a relay with one stable state, the core placed inside the winding is made of a magnetically soft material, while a permanent magnet is applied to MK cylinders of one group. 3. Electromagnetic relay according to claim 1, characterized in that the permanent magnet is made flexible and bent so that a section close to figure 8 is formed in section, one group of magnetic contacts being enclosed in one cavity, and the other in another.