SU983806A1 - Polarized electromagnetic relay - Google Patents

Description

The invention relates to electrical engineering and can be used in modern equipment used everywhere in automatic control, telemechanic, measurement and communication systems.

One of the most important modern requirements for most automation components, including electromagnetic relays, is the maximum reduction of their dimensions with simultaneous design and technological simplification and an increase in the reliability of their operation.

At present, subminiature relay type RPS-43 with dimensions of 80x14,5-19 mm and a mass of 8 g Cl is known.

The disadvantages of such relays are the relatively large dimensions of the mass, as well as the very complex manufacturing techniques, due to the high precision of the machining of parts and the complexity of assembly and adjustment.

The closest in technical essence and positive effect to the invention is a neutral electromagnetic relay containing membrane-type measles, fixed along the perimeter and which is essential

switching movement as a moving contact C 2.

However, the known device is characterized by considerable size and weight, since the deformation movements of the membrane, sufficient for switching, require considerable forces generated by a magnetic system of sufficient size.

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The aim of the invention is to reduce the size and weight, expanding switching capabilities, subject to increasing the performance characteristics of a polarized electromagnetic relay.

The goal is achieved by the fact that in a polarized electromagnetic relay containing a magnetic circuit

20 with pole tips, on which windings are applied, permanent magnets and fixed contacts, elastic ferromagnetic measles acting as a movable contact,

25, the magnetic core is made in the form of a flat rectangular spring, which is not fixed at its ends with the protrusions of the magnetic core.

In order to expand the functional

30 possibilities provided for installation

additional korea, similar to the first.

Fixed fixing of both ends of each core leads to a significant increase in the operating characteristics of the relay, in particular, vibration resistance under external mechanical disturbances of the base, eliminates the occurrence of parametric resonance of the core, raises the boundaries of the frequency range of external shock vibrational disturbances, and allows for small sizes of the elastic element serving as a core and moving contact, to obtain the necessary displacements of the latter, which are at least an order of magnitude larger than of the membrane core fixed along the perimeter with a diameter equal to the length of the elastic movable contact of the core).

The drawing shows a polarized electromagnetic relay, a general view

The relay contains magnetic core 1 with windings 2 and protrusions in the form of flat tips 3.1,3.2,3,3,3.4, permanent magnets 4.1,4.2, two cores 5.1, 5.2, which simultaneously serve as movable contact springs. Spring measles are made of a magnet of a ductile material and each of them has two ends Fixed on a magneto conduit (on the pole projections of tips 3.1 and 3.2). Anchors from the magnetic core are separated by an insulation layer. B. Spring akori can be made of a spring contact alloy or have concentrated contact spots. Fixed contacts 7-10 fixed on the base 11, where the above elements are located.

The relay works as follows.

In the absence of current in the windings 2, the permanent magnets 4.1 and 4.2 create magnetic fluxes, the possible directions of which are indicated by dashed lines.

Depending on the magnitude of the magnetic force of the permanent magnets and the elastic forces of Korea 5.1 and 5.2, the contact pairs 5.1 and 7, 5.2 and 9 C or 5.1 and 8, 5.2 and 10 can be provided (with a significant amount of magnetic force).

When a signal is applied to the windings 2, magnetic fluxes occur, which can be added to the magnetic fluxes of permanent magnets in the working

air gaps or subtracted from them. In the first case, the magnetic fluxes provide attractive forces that cause elastic deformation of the spring cores, and thus the closure of the contact pairs 5.1 and 8, 5.2 and 10, in the second - 5.1 and 7, 5.2 and 9.

When the current in the windings 2 disappears, the measles 5 returns to their original position due to the forces of their own elasticity and the magnetic forces of the permanent magnets.

The technical effect of the proposed polarized electromagnetic relay is to significantly simplify the design of the relay and its manufacturing technology, its further miniaturization, enhanced vibration resistance and practically vibration-free (bezbezborg) contact closure, since contact shocks against each other are eliminated.

Claims (2)

1. A polarized electromagnetic relay containing a magnetic core provided with pole terminals, permanent magnets, control windings, stationary contacts and plate-type elastic ferromagnetic measles bonded to the magnetic core, performing the functions of a movable contact, characterized in order to simplify the design and extend the functional possibilities, the magnetic core is made in the form of a rod, at the ends and in the middle part of which “protrusions are made, lamellar elastic ferromagnetic measles are made rectangular m, rigidly bonded to the annular projections of the magnetic circuit and installed with a gap in relation to the middle protrusion. 2. A relay in accordance with Claim 1, characterized in that it contains at least one additional measles, installed in a manner similar to the first one. Sources of information taken into account in the examination 1. Vitenberg M.I. Calculation of electromagnetic relays. L., Energie, 1975, 2. Patent SShL number 3467923 ,. Cl.335-196, 1969 (prototype ;.