SU1367061A1 - Push-button selector switch - Google Patents

Abstract

The invention relates to electrical engineering and can be used in devices for switching electrical circuits. The aim of the invention is to simplify the design and increase reliability and speed. The switch contains a base 1, a pusher 9 with a button 2, a return spring 3 of the pusher. Contact spring 4 is installed at the base and interacts with the contact elements 6 and the cams 7, which are placed in the pusher 9. The cams are interconnected by an elastic element 8, and are provided with transverse grooves 10. 4 Il. e (L

Description

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 The invention relates to electrical engineering and can be used in devices for switching electrical circuits of radio engineering, electronic and other equipment.

The aim of the invention is to simplify the design and increase the reliability and speed of the switch

FIG. 1 shows the pushbutton switch, general view; in fig. 2 is view A in FIG. in fig. 3 - contact spring; in fig. 4 (a, b, c) - various positions of the spring contacts.

The push button switch contains a base 1, a button 2, a return spring 3. The contact flat plate on 4 has bent ends 5 and at the same time performs the function of a locking element. The fixed contact elements 6 are placed in the base 1. The drive mechanism consists of cams 7 connected by an elastic element 8. The cams are mounted in the pusher 9 with the ability to move symmetrically with respect to the axis of symmetry of the switch and have transverse grooves 10. The contact plate 4 is prestressed and the protrusions 11 abut against the grooves of the recess 12 of the base 1.

The switch works as follows (Way.

When the button 2 is pressed, the pusher 9 presses on the contact plate 4. The torus bends and jumps to the lower stable position, closing the contact elements with itself. The distance between the ends of the contact plate 4 decreases (Fig. 4a). When releasing the button 2, the pusher 9 under the action of the return spring 3 begins to return to its original position. At the same time, the ends 5 of the contact plate 4 press on the cams 7, which approach each other, deform the elastic element 8, slip the ends 5 of the contact plate 4 and are installed above them by transverse grooves; mi 10 (Fig. 46).

When the second button is pressed 2, the pusher 9 presses the cams 7 on

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the ends of the contact plate 4. Due to the distance B from the points of the supports of the contact plate 4 to the lines of action of forces,

attached to its ends, a moment is formed, tilting the contact plate 4 to its original position (Fig. 4c). There is an open circuit. At the same time, the ends 5 of the contact plate 4, which appeared in the grooves 10 of the cams 7, move them apart, deforming the elastic element 8.

When releasing button 2, the pusher

If 9c with the cams 7 is returned to its original position by the action of the return spring 3. When this Cams 7 under the action of the elastic element 8 jumps off the ends 5 of the contact

20 plate 4 and occupy the original position (Fig. 1).

The switching cycle ends.

Claims (1)

Claims 25 A pushbutton switch comprising a grooved base, a drive mechanism including a pusher, a spring-loaded return spring, a locking element and a movable contact element with bending ends, characterized in that, in order to simplify the design, improve reliability and speed, the movable contact element made in the form of a flat plate with protrusions, the drive mechanism also includes two cams with transverse grooves and an elastic element, 40, the cams are connected to each other, with the other by an elastic element and are arranged for their transverse movement in the pusher, which has the ability to act on the movable contact element, while the movable contact element is simultaneously a fixing element and is installed with a prestressing force. inserted into the grooves 5Q bases, and the bent ends have the possibility of inserting them into the transverse grooves of the cams and interacting with the latter. Vida / 7 (riel