SU951440A1 - Magnet ically controlled contact - Google Patents

Description

(54) MAGNETIC CONTROLLED CONTACT

one

The invention relates to electrical engineering, namely switching technology, and can be used in control, monitoring, automation and communication systems as a multi-contact switching element.

Magnetically controlled contacts are known, containing two stationary and one movable contact parts, two switching circuits 1.

The disadvantage of such a magnetically controlled contact is the limited switching capacity of a single contact element.

To increase the number of switching circuits, they usually increase the number of magnetically controlled contacts or the number of pairs of moving and stationary contact parts in a single flask.

A magnetically controlled contact is known in which the movable contact element is made in the form of a flat plate with slots perpendicular to its axis, and the stationary auxiliary contacts are placed under the formed slots and projections perpendicular to the axis of the movable contact 2.

However, although this contact increases the number of switched circuits after the contacts are closed, all previously isolated galvanic circuits are galvanically connected by the same potential.

5, which significantly narrows the scope of the lined contact.

The closest to the proposed technical entity is a magnetically controlled contact, containing bases, Q mobile and fixed contact details, placed along the axis of the sealed container, and additional contact details, placed under the main movable contact part, perpendicular to the axis of the sealed cylinder,

15 additional contact details are arranged in pairs against each other 3.

The disadvantage of this device is that it produces only one break of the switched circuit, which reduces

2Q reliability of operation.

The purpose of the invention is to increase the reliability of operation.

The goal is achieved due to the fact that the additional contact parts are located with a gap of each

On the other hand, strips of electrically insulating material are deposited on the main movable contact piece onto which a layer of electrically conductive material is applied, and these strips and layers are located perpendicular to the axis of the reed switch over the gap between the additional contact parts so that they form contact bridges.

FIG. 1 shows a magnetically controlled contact, a longitudinal section; FIG. 2- magnetic contact, top view; in fig. 3 is a section A-A in FIG. 2; in fig. 4 is a section BB in FIG. 2

The magneto-controlled contact contains the main movable 1 and fixed 2 contact details, fixed in opposite ends of the sealed glass bulb 3 along its axis. Additional contact parts 4 are located under the movable main contact part 1 or above it perpendicularly to the axis of the flask 3, forming additional contact pairs, which, for example, are closed in FIG. 3, and opening, as for example, in FIG. 4. Additional contact parts 4 are made in the form of flat plates with the corresponding configuration of non-magnetic material and brought out through the side walls of a sealed bulb 3. Contact details are additional contact pairs that do not overlap each other. At the ends of the additional contact parts 4, located under the main moving contact part 1, point contacts are fixed (the position is conventionally not indicated).

Directly to the axis of the movable main contact opposite the rupture zone of each of the additional contact pairs 4 on the movable main contact part 1 are deposited, for example by spraying, strips 5 of electrically insulating material, which in turn are coated with a layer of electrical conductor 6 serving as a contact bridge contact pairs 4.

When exposed to the base of the contact parts 1 and 2 of the magnetic control flow, the latter are closed. When moving the main movable contact part 1, its lower contact bridges 6 close and the upper ones open additional contact pairs 4. The contact pressure of the additional contact pairs 4 is created by the magnetic flux of the main contact parts 1 and 2 and the spring properties of the additional contacts.

Due to the insulating properties of the electrically insulating strips 5, galvanic separation of each additional contact pair is provided.

When removing the control magnetic

Flow main contact parts l and 1 and 2 flow ts. The additional closing contact pairs are opened and the closing contact is closed.

The use of the proposed magnetically controlled contact allows increasing the reliability of the circuits in the case of using multi-contact sealed magnetically controlled elements, which ultimately leads to an increase in the reliability of control systems, automation, control and communication, as well as reducing the size of the equipment and the consumption power of the relay coils based on the magnetic contact.

Claims (3)

1. Kharazov K. I. Relay with magnetically controlled contacts. M., “Energie, 1971, p. eight. 2. USSR author's certificate number 595801, cl. And 01 And 1/66, 1976. 3. USSR author's certificate in application number 2898546/07, cl. And 01 H 1/66, 03/25/80.  if .f  . / 4-x d.2