SU1053175A1 - Snap action switch - Google Patents

Abstract

INSTANT ACTION SWITCH, comprising a housing, movable contacts, fixed contacts,: 3 secured on the housing, a movable element, a driving element connected to the movable element by means of a working spring, and stops for the movable element, characterized in that in order to provide a constant contact pressing, bounce when the contacts are turned on, providing the possibility of adjusting the differential stroke and the moment of operation of the switch, it is equipped with a shaft, the stops for the moving element are adjustable iruemymi, said shaft rigidly attached to the movable member and the movable contacts are fixed on the shaft, wherein the movable and stationary; These contacts are made one against the other with the possibility of sliding. 8 O: n: ate

Description

The invention relates to electrical engineering and can be used as an electrical switch or position sensor.

The instantaneous action switch is known, which contains a contact lever with a movable element hinged on it and a spring-loaded drive element .1

Such a device has a complex structure.

Closest to the invention is an instantaneous action switch comprising a housing, movable contacts and fixed contacts mounted on the housing, a movable element, a drive element connected to the movable element by means of a working spring, and stops for the movable element 2.

The disadvantages of the known switch are the change in the contact pressure in the process of moving the drive element, contact bounce when turned on, the inability to regulate the differential stroke and the time the switch operates when the drive element reaches the position Hciro.

The change of the contact pressure during the movement of the drive element occurs due to the change in the direction of the force of the working spring in the process of movement, acting through the moving element on the contact lever. The contact bounce occurs when a contact, attached to a contact lever, is attached to a fixed contact as a result of a contact hit.

The aim of the invention is to provide a constant contact pressure and in the process of moving the drive element, to avoid bouncing when the contacts are turned on, and to enable the adjustment of the differential stroke and the moment of operation of the switch.

The goal is achieved by the fact that an instantaneous action switch comprising a housing, movable contacts, fixed contacts fixed on the housing, a movable element, a drive element connected to the movable element by means of a working spring, and stops for the movable element are provided with a shaft, stops for the movable element is made adjustable, said shaft is rigidly fastened to the movable element, and

the contacts are fixed on the shaft, while the movable and fixed contacts are installed relative to each other with the possibility of sliding,

5 In FIG. 1 shows the proposed switch in the initial position; in fig. 2 - the same, left view; FIG. 3 is a section A-A in FIG. 2; in FIG. 4, the switch with the water element pressed down;

The switch consists of the housing 1, in which the drive element 3, which is pressed by the return spring 2, is connected by means of

5 whose spring 4 with a movable element

5, which is rigidly fastened to the shaft

6, adjustable levers in screws 7 and 9, fixed contacts in the form of collector brushes 9 that are in contact

0 with movable contacts flush with the insulating surface of the shaft.

In the initial position, the movable element 5 by the working spring 4 is held in the upper (according to the drawing) position. When the drive element 3 is moved to the unstable equilibrium position of the moving element, the latter remains stationary. With further movement of the drive element 3 under the action of the working spring 4, the movable element 5 is transferred, and hence the shaft 6 is rotated to another stable position (FIG. 4). When this occurs, the conductive and insulating surfaces of the shaft b are changed under the electric shields 9, i.e. switching contacts. When the drive element is released, all breaker switches return to their original position.

Change with noMOLtbio adjusting | Winter 7 and 8 angle, you can adjust the differential course of the switch. The moment of operation of the switch depends on the position of screws 7 and 8. By changing the position of the screws or or 8, you can adjust the moment of operation of the switch,

0 The contact pressure in such a switch depends only on the force applied by the electric brushes 9 to the surface of the shaft 6 and does not change in the process of moving the drive

5 items. Since there is no contact impact when switching a switch, there is no contact bounce in such a contact system.

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Claims (1)

Instantaneous action switch, comprising a housing, movable contacts, fixed contacts fixed to the housing, a movable element, a drive element, connected. with a movable element. vom working spring, and stops for the movable element, characterized in that, in order to ensure constant contact pressing, eliminating chatter when turning on the contacts, providing the ability to adjust differential. the stroke and the moment of operation of the circuit breaker, it is equipped with a shaft, the stops for the movable element are adjustable, the shaft is rigidly fixed to the movable element, and the movable contacts are fixed to the shaft, while the movable and fixed contacts are mounted relative to the other with the possibility of sliding. Fig!