SU490200A1 - Multipoint switch - Google Patents

Description

one

The invention relates to electrical equipment and can be used in the power supply, control and monitoring of radio and electrical devices.

Switches are known that contain a board with fixed contacts and recesses for fixing balls, movable contacts mounted on a holder equipped with a spring-loaded fixing ball and connected to a pivot axis.

However, in these switches, as the moving contacts slide over fixed contacts, the contact material is sprayed onto the insulation board between adjacent non-moving contacts, which leads to an overlap between them.

The purpose of the invention is to increase the reliability of the switch.

This is achieved by the fact that the movable contacts are made movable relative to the holder and are freely mounted on an instantaneous mechanism driven by a locking element, with the result that the movable contacts are raised above the plane of the fixed contacts at the moment of switching.

FIG. 1 shows the proposed switch, a longitudinal section; in fig. 2 shows a section along AA of FIG. one.

The board i of insulating material has uniformly located but the circles of a pair of contacts 2 and fixing angles corresponding to each state of the switch (each position of the gel 3j.

The holder 3 is also made of insulating material 01UI01O. It contains a mechanism for action of a lever consisting of a lever 1 fixed on the axis o and a rod o connected between the spring 7. The lever 4 is connected to the pins with a clamping ball 1U and clamped through an isolating pin b. spring 11. The locking ball III is located in the locking recess on the board 1. The holder 3 is rigidly connected to the axis 12 of the switch. The switch is in one of its positions

i.e. the holder is in one of the fixed positions relative to the board, the contacts 2 are closed through the movable contacts 9.

When the axis 12 is rotated, the holder 3 moves relative to the board 1 and removes the fixing ball 1 from the fixing recess in the plate 1, while the ball 10 moves the rod 6 downwards, the locking pin

spring 11. The movement of the rod 6 causes a displacement of the spring end fixed on it, 7, which is further stretched. When the spring is not cut by the 7th axis, the 5th lever 4, under the action of the spring 7, instantly translates the moving contact:. 9 to the open position. When the axis 12 is further rotated, the holder 3 is transferred to the adjacent fixed position, the locking ball sinks into the locking recess in the plate I, and the rod 6 instantaneously moves the moving contacts 9 to the closed position, and the switch is moved to the next position.

4 PREPARATIONS AND RESULTS

A multi-position switch comprising a board with fixed contacts and locking grooves, a holder spawned with moving contacts and a spring-loaded locking element and connected to a rotary axis, characterized in that, in order to increase the reliability of the actuator, the movable contacts are freely mounted on the mechanism of instantaneous movement associated with the locking element.

eight

FIG. 2