SU60953A1 - Time relay - Google Patents

Description

The object of the present invention is a time delayed time relay, i.e. a relay that instantaneously breaks a normally closed executive circuit when a pulse is received, and then closes it again after a certain time.

The proposed relay differs from known structures in that the bimetallic plate used as an element of time delay is located together with an inclusive circuit contact on the cortex of the electromagnetic element and has a self-locking contact of the electromagnetic element that closes when the time element is triggered.

FIG. 1 shows schematically the proposed relay and in FIG. 2 - scheme of its inclusion.

As can be seen from the drawing, the relay consists of an electromagnet /, fixed on the base 2, the measles 5 is fixed above the electromagnet 1 by means of a spring 3, which tends to lift the measles up, screw 4, with which the distance between the core 5 and the electromagnet is adjusted; at the same time, the screw 4 serves as a contact for powering the winding of the electromagnet 1. The bimetallic layer b with the heating winding 7 is attached to the bark 5. When the plate 6 is heated, its free end bends towards the side of contact 9 (a and b). Item b is mounted on a bimetallic plate 6, but is isolated from the last plate 10 of an insulating material. Under the plate 6 there is a contact // consisting of the parts in and. The part in is fixed on the plate 6 and has electrical contact with it; plate 6 has contact with part 5, and part 5 has contact with part 3. Detail g, like detail a, is made in the form of a spring.

When no current enters the winding of electromagnet 1, the contact // is open, contact 4 is closed, contact 9 is also closed and feeds the circuit of the executive devices and intermediate relays indicated in FIG. 2 digits 13.

The closure of contact 12 (Fig. 2) is energized by the winding of the electromagnet / measles 5 to the electromagnet 1, breaking the contacts 9 and. 4 contact at the same time contact 11, blocking the relay and supply the heating winding 7.

The bimetallic plate 6 will begin to heat up, bend, and after some time, which can be adjusted by the rheostat 8, will again break contact 11 by unlocking the relay. The contacts must be adjusted so that contact 11 is broken before contact 9 is closed. Therefore, contact 9 does not close due to the bending of plate 6, but rather the force of spring 3. This eliminates the contact capacity of the thermal relays.

Subject invention

A time relay with an electromagnetic element, which serves to instantly open a controlled circuit, and a time delay element, which closes this circuit after a certain period of time, characterized in that the bimetallic nastinka, used as a time delay element, is located together with a circuit with a contact on the cortex of the electromagnetic element and carries a self-blocking contact of the electromagnetic element that closes when the latter is activated and opens when the elec- tric is triggered cient time delay.

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