RU1820958C - Switch - Google Patents

Abstract

The invention relates to electrical engineering, and more particularly to means for switching circuits of electronic equipment. SUBSTANCE: switch consists of a control element with a control element, an insulating casing with fixed contacts fixed therein, movable make contacts mounted on a supporting element connected to the control element, a speed mechanism, which is made in the form of a compression spring; based on transverse prismatic protrusions in the grooves of the control and bearing elements. In the middle of the prismatic protrusions there are spherical bosses preventing the spring from slipping in an unstable equilibrium position when it is in its movement located on the upper faces of the prismatic protrusions. The proposed design of the switch will improve reliability, wear resistance, manufacturability. 6 ill.

Description

The invention relates to electrical engineering, and more particularly to means for switching circuits of electronic equipment.

The purpose of the invention is to increase the reliability, wear resistance of the speed mechanism of a push button switch, simplify assembly operations, which creates conditions for their automation.

In FIG. 1 shows a front view switch with a cover removed; Fig. 2 shows a circuit breaker in a profile projection with cuts at the location of the springs and contacts; figure 3-5 shows a diagram of the operation of the speed mechanism;

Fig. b shows the speed mechanism in isometry.

The switch consists of an insulating box of a box-shaped form 1, in the guides of which the control element 2 of the control element and the supporting element 3 are moved with movable closing contacts 4. On the control element 2, on the outside of the housing 1, a return spring 5 and a button are placed 6. The speed mechanism is formed by a compression spring 7, which rests during operation on the transverse prismatic protrusions 8 in the grooves A of the control 2 and bearing 3 elements. In the middle of the prismatic

00

you about

00

with

10

The protrusions 8 are spherical bosses 9, which prevent the spring 7 from slipping in an unstable equilibrium position when it is located on the upper faces of the prismatic protrusions. The spring 10 springs one of the movable contacts A. The fixed contacts 11 are fixed in the insulating housing 1 and the cover 12, forming a rigid structure.

The switch operates as follows. When the button 6 is pressed, the control element 2 starts to move together, compressing the return spring 5 and the spring 7. The speed mechanism turns -15 by turning the latter simultaneously in the passages A of the control element 2 and the supporting element 3. Until the unstable position is reached equilibrium (see Fig. 4}, the force F2. of the spring 7 is directed in the same direction as -20 and the force FI applied to the control element 2 (see Fig. 3). Bearing element 3 with movable make contacts 4 at this time pressed against the rear wall of the housing 1. When the spring 7 passes through p In addition to the unstable equilibrium, the direction of action of its force F2 is reversed (see Fig. 5), the bearing element 3 with movable closing contacts 4 is accelerated in the direction of the fixed contacts 11 until the moment of closing. The spring 10 allows you to distribute the force generated by the spring 7 between the movable make contacts 4, providing a contact pressing force.When the control element 2 moves in the opposite direction, everything repeats in the reverse sequence. Compression spring 7 relies on races during operation

thirty

35

0

fifty

5

0

5

the prismatic protrusions 8 placed in the grooves of A. and the spherical bosses 9 in the unstable equilibrium position, located inside the spring, prevent it from sliding off the prismatic protrusions 8.

. The proposed design of the push-button switch allows the use of a compression spring in the speed mechanism, the mechanism itself consisting of only one spring installed in the grooves of the control and load-bearing elements and resting on the transverse prismatic protrusions in these grooves, which minimizes the number of parts and greatly simplifies the technology manufacturing, allows to provide high reliability and wear resistance (25 thousand cycles vk / hon;), allows to automate assembly operations.

FORM ULLIS

The switch, consisting of a control element with a control element, an insulating housing with fixed in it

fixed contacts, movable make contacts mounted on a supporting element connected to the control element of the speed mechanism, and the fact that, Q, in order to increase reliability, durability, manufacturability, the speed mechanism is made in the form. compression springs resting on transverse prismatic protrusions made in the grooves of the control and bearing elements and having

 in the middle part, spherical bosses preventing the spring from slipping in an unstable equilibrium position.

Figs

Figure 1

Sug. 3

F (/ g4 J

Wittf

at

Shchig. 6