RU67330U1 - SWITCH-DISCONNECTOR - Google Patents

Abstract

The utility model relates to the field of electrical engineering. The switch-disconnector contains a multi-section insulating casing, fixed contacts, a control shaft with a handle. Blocks of movable contacts are installed in the through holes of the control shaft. Blocks consist of two parallel contacts compressed by coil springs. The movable contacts are assembled into a block using fastener plates and two axes perpendicularly mounted. A groove is made in the central part of each axis. The movable contact unit is provided with a rectangular plate. On opposite sides of the rectangular plate, grooves are made. A rectangular plate is installed between the parallel contacts and two axes. The groove of each axis fits into the corresponding groove of the rectangular plate. Increases the switching ability and durability of the switch-disconnector. 4 ill.

Description

The utility model relates to electrical engineering, in particular, to low-voltage switch-disconnectors designed to turn on, pass and turn off AC and DC current in electric power distribution devices, to turn on and off electric motors.

The closest analogue of the proposed switch-disconnector is a switch and a switch of a series ВР32 for currents 100 and 250A (industrial catalog LK 07.02.40-89, INFORMELECTRO, 1989, p.4, 5), containing a multi-section insulating casing, fixed contacts installed in the casing, a control shaft, in the openings of which are movable contacts, consisting of two parallel contacts, compressed by springs and assembled in a separate unit with the help of fastener plates and two axes perpendicular to each other. The device is turned on and off by a handle that is connected to the control shaft.

The disadvantage of the known technical solution can be attributed to the unreliability of functioning under electric load during operation of the device, which is due to the weakening of contact pressing as a result of unreliable fixation of the block of movable contacts.

The task to which the utility model is directed is to ensure reliable operation during operation of the switch-disconnector, by ensuring reliable fixation of the block of movable contacts.

To solve this problem, a well-known switch-disconnector containing a multi-section insulating casing,

fixed contacts installed in the housing, a control shaft connected to the handle and passing through sections of the insulating housing, mobile contact blocks installed in the through holes of the control shaft. Blocks of movable contacts consist of two parallel contacts, compressed by springs and assembled using fastener plates and two axes perpendicular to each other.

New is the fact that a groove is made in the central part of each axis, and the blocks of movable contacts are provided with a rectangular plate with grooves made on opposite sides. A rectangular plate is mounted between the parallel contacts and two axes, so that the groove of each axis is located in the corresponding groove of the rectangular plate.

The utility model provides reliable fixation of the block of movable contacts due to the presence of the plate and the execution of the axes with grooves.

The essence of the claimed utility model is illustrated by drawings:

figure 1 presents a General view of the switch-disconnector with a cutout A;

figure 2 shows the cutout A in figure 1;

figure 3 presents a General view of the block of movable contacts with a section aa.

figure 4 presents a section aa in figure 3.

The housing of the switch-disconnector is multi-sectional, consisting, for example, of sections 1, 2, 3. Fixed contacts are fixed in the housing 4. The control shaft 5 passes through all the sections 1, 2, 3. The movable contact blocks 7 are installed in the through holes of the control shaft 5 (figure 1). Blocks of movable contacts consist of two parallel contacts 8, compressed by springs 9 and assembled using fastener plates 11 and two parallel axes 10 (Fig.2, 3). The blocks of the movable contacts 7 are provided with a rectangular plate 12 with

grooves A are made on opposite sides, and a groove B is made in the central part of each axis 10. A rectangular plate 12 is installed between the parallel contacts 8 and two axes 10 so that the groove B of each axis 10 is located in the corresponding groove A of the rectangular plate 12, which provides reliable assembly of the block of movable contacts 7 (figure 2, 3, 4) and increases the reliability of the switch-disconnector during operation.

The device operates as follows. To close the electric circuit, rotate the control shaft 5 with the handle 6 until the fixed contacts 4 and the movable contacts 7 are completely connected. To disconnect the electric circuit, the handle 6 is rotated in the opposite direction.

Claims (1)

A switch-disconnector comprising a multisectional insulating casing, fixed contacts installed in sections of the insulating casing, a control shaft connected to the handle and passing through the sections of the insulating casing, moving contact blocks installed in the through holes of the specified control shaft and consisting of two parallel cylindrical contacts springs, and assembled using fastener plates and two perpendicularly mounted axes, characterized in that in the central part of each axis a groove is made, and the blocks of movable contacts are provided with a rectangular plate with grooves made on opposite sides, while a rectangular plate is installed between the parallel contacts and two axes so that the groove of each axis is located in the corresponding groove of the rectangular plate.