SU1293767A1 - Switching device - Google Patents

Abstract

The invention relates to electrical engineering and can be used as a sensor for the relative position of moving parts in automatic control and regulation systems for devices operating under external mechanical stress conditions, with switching of several independent electrical circuits. The contact springs 3, 4, 5, 6 are actuated by a guide bar 11, which is rigidly fixed to the control element. The control consists of a rod 9 and a button 10. A part of the shaft 9 is made in the form of a hollow cylinder 12, which forms a telescopic connection with the opening 8 of the housing 1. 3 il. . 7 Ю 1 (Л 18 ГчЭ it with О5 v3

Description

The invention relates to electrical engineering and can be used as a sensor for the relative position of moving parts in systems of automatic control and regulation of devices operating under external mechanical stress conditions, with switching of several independent electrical circuits.

The purpose of the invention is to increase the reliability and increase the stroke of the control element of the switch without increasing its size.

FIG. Figure 1 shows schematically a switching device containing four pairs of contact springs, with a tapped control, a longitudinal section; in fig. 2 - the same, top view; in fig. 3 - the same, with the control pressed.

The switching device consists of a housing 1, on which a block 2 is installed with contact springs 3 and 4, 5 and 6, arranged one below the other and forming two pairs of contacts (Fig. 1). Parallel to the springs 3 and 4, 5 and 6, another number of contact springs are installed, similarly to

15

20

When the button 10 is released under the force of the return spring 13, the control with the leading plate 11 moves to the extreme upper position, the ends of the contact springs 4 and 6 are released and the lower edges of the slots 15 and 16 are pressed against the contact springs 3 and 5. The contact pairs are closed and held in this position, the lower edges of the slots 15 and 16 of the leading bar 1 1.

Based on the logic of the control system, it is possible to manufacture a switching device with a different number of contact springs, having them in 3, 4 or more rows in the horizontal and vertical planes and making respectively 3, 4 or more slots in the protrusion of the rod. It is also possible to manufacture a switching device with contact springs open in the initial position and closed when the control is in the depressed position or open and closed

forming two more pairs of contacts (Fig. 2). 25 contact springs simultaneously in

thirty

In the case h, there are, for example, cylindrical holes 7 and 8 in which a control element is installed, consisting of a rod 9 with a button 10. A leading bar 11 is rigidly fixed to the control element. A part of the rod 9 is made in the form of a hollow cylinder 12 forming an aperture 8 is a telescopic connection, inside of which a return spring 13 is placed, abutting one end against a nut 14, screwed into the housing 1, and the other end holding the stem 9 in the upper position. Leading plate 11 with a U-shaped grooves.

15 and 16 includes a notch 17, into which the strap 18 enters, preventing the rotation of the leading strap 11 around the axis of the rod 9.

In the initial position (Fig. 1), the rod 9 with the leading bar 11 is in the extreme upper position under the action of the return spring 13. Leading plate 11 lower edges of the slots 15 and 16 closes the contact springs 3 and 4, 5 and 6 and holds them in a closed position. When the button 10 is pressed, the rod 9 with the guide bar 11 moves to the lowest position, the contact springs 3 and 4. 5 and 6 open, and the ends of the springs 4 and 6 with the upper edges of the grooves 15 and

The 16 leading strip 11 is retracted from the contact springs 3 and 5 and held in

the initial position of the control and changing its state when the control is pressed. To do this, it is necessary to swap the contact springs that interact with the B1, 1 stupas of the drive bar, with the springs that do not interact with the projections of the bar.

Claims (1)

Invention Formula A switching device comprising a housing, contact springs, a drive plate with grooves for inserting contact springs, a return spring and a control, characterized in that, in order to increase reliability and increase the travel of the control without increasing the dimensions of the switching device, in the housing Two holes are made to accommodate the governing body, the grooves of the leading bar are U-shaped, part of the governing body is made in the form of a hollow cylinder that forms with one of the holes telescopic connection in the housing, inside which 50, a return spring is installed, which is a control element that is rigidly connected to the drive plate. 45 this position, because of their closure with contact springs 3 and 5 under external mechanical loads on the switching device (Fig. 3). When the button 10 is released under the force of the return spring 13, the control with the leading plate 11 moves to the extreme upper position, the ends of the contact springs 4 and 6 are released and the lower edges of the slots 15 and 16 are pressed against the contact springs 3 and 5. The contact pairs are closed and held in this position, the lower edges of the slots 15 and 16 of the leading bar 1 1. Based on the logic of the control system, it is possible to manufacture a switching device with a different number of contact springs, having them in 3, 4 or more rows in the horizontal and vertical planes and making respectively 3, 4 or more slots in the protrusion of the rod. It is also possible to manufacture a switching device with contact springs open in the initial position and closed when the control is depressed or open and closed contact springs at the same time the initial position of the control and changing its state when the control is pressed. To do this, it is necessary to swap the contact springs that interact with the B1, 1 stupas of the drive bar, with the springs that do not interact with the projections of the bar. Invention Formula A switching device comprising a housing, contact springs, a leading plate with grooves for inserting contact springs, a return spring and a control element, characterized in that in order to increase reliability and increase the operating stroke of the control element without increasing the dimensions of the switching device two holes for placing the governing body in them, the grooves of the leading bar are U-shaped, part of the governing body is made in the form of a hollow cylinder that forms with one of the holes telescopic connection housing within which A return spring is installed, which is a control element that is rigidly connected to the drive plate. eleven FIG. 2 18 Editor S. Lisin Order 391/55 VNIIPI USSR State Committee for Inventions and Discoveries 1 13035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Project, 4 fig.Z Compiled by N. Petrakova Tehred I. VeresKorrektor M. Demchink Circulation 699 Subscription