SU1309105A1 - Knife-blade switch - Google Patents

Abstract

The invention relates to electrical engineering and can be used in hand-operated switching devices. The goal is to reduce the size, weight and simplify manufacture. The switch contains pairwise connected insulating housings with segment cuts 4 for obtaining a visible break in the electric circuit, two groups of grooves 5 with arc extinguishing plates 6 inserted into them, forming arc extinguishing chambers. A control shaft 12 passes through the housing block, on which the movable contacts 8 with arc suppression shields 9 are fixed. The fixed contacts are clamped between the ends of the adjacent bodies. The locking mechanism provides momentary shutdown. 2 Il. from € W WITH 00 about with //

Description

The invention relates to electrical engineering, in particular to hand-operated switching devices.

The purpose of the invention is to reduce the size, weight and simplify the manufacturing technology.

FIG. 1 shows a switch, a general view; in fig. 2 - insulating housing, movable and fixed contacts and plates of arcing chambers, side view. The breaker contains pairwise connected insulation housings 1-3 in the form of cylinders with one continuous end with segmental notches 4 for obtaining a visible break of the electric circuit, which are diametrically relative to the longitudinal axis of the cylinder, two groups of diametrically located grooves 5 with arc extinguishing plates inserted into them 6, which form arc-suppressing chambers 7, movable contacts 8 with arc-twisting washers 9 located in the central chamber formed by two half-chambers 10, fixed contacts 11, the driving shaft 12, the locking mechanism 13, the handle 14.

Insulation housings 1-3 with movable contacts 8, fixed contacts 11, a control shaft 12, a fixing mechanism 13 are fastened with studs 15 and nuts 16 and generally form a switch unit with control using a handle 14.

The insulating bodies 2 are intermediate and have double-sided half chambers, and the body 1 is aligned with the body of the fixing mechanism 13.

The switch works as follows.

To close the electrical circuit, the control shaft 12 is turned with the handle 14 until the movable and fixed contacts 8 and 11 are fully closed, which is accompanied by a characteristic click in the locking mechanism 13. To disconnect the electrical circuit, the handle 14 is turned in the opposite direction until it stops, which is also accompanied by a click in the locking mechanism 13. When the switch is turned off, the control shaft 12 rotates with the movable contacts 8 and arcing washers 9, while the movable contacts 8 become visible in the segment notches 4 of the insulating bodies 1-3, and the arc between the movable and stationary contacts 8 and 11 , at the first stage, it is partially extinguished by arcing quads 9 in the central chamber 10, and at the second stage - in an arcing chamber 7 formed by arc extinguishing plates 6.

Claims (1)

Invention Formula A switch containing insulating bodies connected in pairs so that they form closed chambers, each of which contains movable and fixed contacts, a control shaft, a handle, a locking mechanism and arcing elements, while the control shaft passes through insulating body and carries movable contacts, and the handle is installed with the ability to interact with the locking mechanism, characterized in that, in order to reduce the size and weight, each body is made in the form of a cylinder with one continuous end and with two notches in the form of truncated segments diametrically located relative to its longitudinal axis, and in the walls of each cylinder from the side of its open end two diametrically arranged groups of grooves are made, designed to install arc extinguishing plates, with the said grooves arranged so that their axes are parallel planes in which the ends of the cylinders are located. five five 15 Fig 1 VNIIPIZakaz 1440/45 Circulation 699 Subscription Production and printing company, Uzhgorod, st. Project, 4