SU57697A1 - Contact group for telephone relay - Google Patents

Description

The present invention relates to a telephone relay already known per se, in which the contact group comprises a flat contact spring located on the core, isolated from the relay body and carrying working and arc receiving contacts. In this relay, as is widely known in electrical equipment, the arc-receiving contacts are located more far from the axis of rotation of the core than the first ones and are made so that they open later.

According to the invention, the part of the contact spring attached to the pole is equipped with three spring processes, of which the longer middle one carries the receiving contacts and the shorter extreme processes carry the work contacts.

In FIG. 1 and 2 depict a relay with a contact group according to the invention in two projections; FIG. 3 and 4 - the proposed contact group is also in two projects.

The proposed contact group contains a spring 1, mounted on the crust of a helephal with the help of screws 2, insulating gaskets 5

and bushings 4. Spring 1 has two working contacts 5 and two arc-receiving contacts 6 that are remote from the axis of rotation.

The telephone case of the telephone relay is fastened with screws and insulating gaskets two contact plates 7, each bearing one working S and one arc-receiving 6 contact, respectively. The working contacts 5 and S are made of silver, have the shape of a platform and a prism with a rounded top: Noah and serve to keep the high current circuit in a closed state through the plate 7 and the spring 1.

The arc-receiving contacts 6 are tungsten and serve to accept arcs when the circuit is open, IB is released. In this case, the working contacts are diluted earlier than arc-shaped ones.

The above-described contact group mounted on the housing of the single-contact telephone relay allows switching the AC and DC electric circuit on and off. The contact group is activated when the coil is energized by a constant current through the usual contacts of other telephone relays in communications installations. The proposed form of execution of the contact group of relays aims to combine more efficiently the electromagnetic and mechanical characteristics of the relay, thereby ensuring a high pressure in the working contacts required when the motors are turned on, more., Earlier, in comparison with the arc contact, the opening of the workers when releasing the core, a high arc ramp rate and create a large distance between the arc-receiving contacts when releasing the core.

The subject matter of the invention.

A contact group for a telephone relay, containing a flat contact spring located on the bark, is insulated from the case of the relay and not drying, its working and arcing contacts, of which the latter are located farther from the axis of the core, than the first, and that is opened later, characterized in that the part of the contact spring attached to the core is provided with three spring arms, of which the longer middle one carries the receiving contacts and the shorter extreme ones are working contacts.

to the author's testimony M. I. Shigaeva

L 57697

sfig- 2,

FIG. J

spig.