SU20699A1 - Phonetic call valve - Google Patents

Description

The proposed relay is a permanent magnet phonetic ringing relay and has an already known adjustable magnetic shunt, as well as a known core, bouncing off the electromagnet core when the operating current passes through the relay coil.

The invention consists in a constructive implementation of a spring regulating the operation of the core.

In the schematic drawing of FIG. 1, 2 and 3 depict three projections of the proposed relay.

A permanent magnet 1, having the shape of the letter G, is attached to one of the poles of the core 2 of the electromagnet 3, the measles of which 4, equipped with an insert of soft iron 5, is attached to the frame 7 made of non-magnetic material 7. one end of the flat spring is bent 9, the other end of which can freely slide along the bark 4 under the influence of the screw 8 passing through the threaded hole of the frame 7. The armature 4 also has, at its free end, a contact plate 10, which bounces , contact screw and fortified on

frame 7 with the help of an insulated angle bracket 12. The magnetic circuit of magnet 1 is shunted by a massive plate 13 made of magnetic material, moving with a screw 14; the transverse movements of the plate 13 are limited by screws 15 attached to it by guides 16. The ends of the windings of electromagnet 3 are attached to two metal plates 17 fixed on the fiber block 18 screwed by screws 19 to protruding 7. The battery is attached by clamp 19 to angle 11 and relief clamp 20- to frame 7.

Normally, the spring 9 is adjusted with the screw 8 so that the measles 4 are pulled towards the core 2. When the calling current passes through the winding of the driving current of the driving magnet 3, the core demagnetizes it, as a result of which the spring 4 bounces under the influence of its own elasticity than the plate 10 touches the contact screw 11, thus closing the battery circuit. The return of the core 4 to the normal position is made by passing a DC current across the electromagnet 3,

reverse compared with the previous direction.

By adjusting the magnetic shunt, you can achieve the required sensitivity of the relay.

The subject of the patent.

A phonetic ringing relay with a permanent magnet, with an adjustable magnetic shunt and with a calf bouncing off the core of an electromagnet when the operating current passes through a relay coil, characterized by the fact that screw 8, regulating the force of the spring 7, pulling the bark from the core, is positioned so that as it moves, it rests on the curved part of the spring and, straightening it, forces it to slide with its free end along the core 4.

ZO FIG. I. “r GP1. 10 5 2 i i6 17 fig.Z. L3A c: FIG.