SU1621095A1 - Automatic switch - Google Patents

Description

one

(21) 4383478/07

(22) 02.29.88

(46) 01.15.91. Bul №2

(71) Ulnovsky Polytechnic Institute

(72) E.F. Scherbakov, M.V. Pavlov and L.F.Ovsienko

(53) 621.316.547 (088.8)

(56) USSR Copyright Certificate No. 1210151, cl. H 01 H 33 / 18.1984.

Application of Germany No. 2604314. class. H 01 H 9/46, 1976. (54) AUTOMATIC SWITCH

(57) The invention relates to electrical engineering and can be used in low voltage apparatus. The purpose of the invention is to increase the switching capacity. The switch contains 2 movable and fixed 1 contacts. Two elastic plates 5 and 6 are interconnected by one ends. The other end of the plate 6 is connected to a movable contact 2, during the movement of which both plates move in the groove 7. When the contacts 1 and 2 are diluted, it enters the gap between them, cuts the arc and, moving further along the groove 7, moves the arc to ny camera. 3 il.

Fig. /

The invention relates to electrical engineering and can be used in low voltage apparatus for extinguishing an arc.

The purpose of the invention is to increase the switching capacity.

1 schematically shows a circuit breaker in the on position; figure 2 is a section in figure 1; on fig.Z - switch in the off position.

The circuit breaker contains fixed 1 and movable 2 contacts installed in insulating housing 3. To extinguish the electric arc, the circuit breaker has an arcing chamber 4 and two elastic plates. Plate 5 is made of insulating and arc-resistant material and at one end is rigidly connected to an additional plate 6, the other end of which is connected to a movable contact 2 moved by a control mechanism. Plates 5 and 6 are placed in a curved groove 7, made in the walls of the housing 3.

The switch works as follows.

In the on position, the current flows from the source to the consumer through pins 1 and 2. When the switch is turned off, pivoting of pitch 2 and moving the plate b into the groove 7 begin. The insulating plate 5 also moves with the plate b. into the gap between them and cuts

Aa

7 v 7

2

five

0

five

0

an arc arising at the contacts, while introducing into the open circuit a large electrical resistance, which drastically reduces the switchable current.

When the switch is turned on, the moving contact 2 through the plate b forces the plate 5 to move in the slots 7, withdrawing it from the space between the contacts, ensuring their reliable closure.

Claims (1)

Invention Formula A circuit breaker comprising an insulating body, a moving and fixed contact, an arcing chamber, a moving contact control mechanism and an insulating plate inserted between the contacts when they are opened, characterized in that it is provided with an additional elastic material plate. , one end of which is rigidly connected to one end of the insulating plate, also made of elastic material, the other end of the additional plate is connected to the movable contact, in the walls of the housing, there is a curvilinear groove, which passes into the area of the arcing chamber, in which an additional and insulating plate is placed with the possibility of moving in it and entering the insulating plate into the area of the arcing chamber.