SU838800A1 - Push-button change-over switch - Google Patents

Description

(54) BUTTON SWITCH

one

The invention relates to electrical engineering, in particular to control buttons.

Pushbutton switches are known to contain a spring-loaded control button that is movable relative to the base and a rotary lock in the form of a V-shaped spring-loaded flag, which is affected by a side-clip fixed to the push-button stem moving in a closed profile groove 1.

However, the design of these switches is complex.

Pushbutton switches are also known that contain a spring-loaded button that is movable relative to the base and a pivoting ring lock that has a closed heart-shaped groove on its inner surface, along which a side pin 2 fixed to the button shaft moves on the inner surface.

However, the precise manufacture of a closed profile groove is technologically difficult, especially on the inner cylindrical surface of small diameters, and the use of a one-sided lateral tongue can lead to distortions of structural elements, their uneven wear and failure.

2

in operation, and therefore to reduce the reliability of the switch.

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

To achieve this goal, the pushbutton switch, containing a base, a spring-loaded button, coaxially with the rod, has a rotary ring lock, is equipped with two bushings, one of the bushings has an annular toothed comb, the teeth of which are made with the same clamp and one-sided bevel, and the other sleeve has internal longitudinal grooves and a pair of teeth placed between them, made with one-sided and opposite in relation to the teeth of an annular comb with a directional bevel and a tongue equal to that between the teeth of the rings the comb, on the outer side surface of the rotary lock, there are teeth with two bevels, the sleeves are mounted coaxially with the lock fixedly relative to the base with a gap between them, so that their teeth face each other and are displaced to the side of the schag, and the lock is mounted on the button shaft, so that its teeth have the ability to interact with the teeth of both And inserts into said internal ones: the grooves of one of them.

FIG. Figure 1 shows the switch, general view; in fig. 2, 3 - sleeves; in fig. 4 is a diagram of the sequence of positions indicated by numerals inside the triangles, the teeth of the rotary lock (in the scan).

The switch consists of a base 1 in the form of a glass and, under the influence of the spring 2, of the control button 3, the stem of which passes coaxially through the base 1. In the annular groove of the stem of the button 3 there is a rotary ring clamp 4 with two diametrically opposite teeth with two bevels on it side surface. Inside the base 1, the sleeves 5 and 6 are fixedly aligned with the retainer. At the upper end of the sleeve 5 there is an annular tooth comb made of teeth 7 placed with the same clamp and having a one-sided bevel. At the end of the sleeve 6, a pair of teeth 8 are placed with the same step as the tooth 7, but with oppositely directed one-sided bevel and offset by part of the step with respect to the tooth m 7. Between the pairs of teeth 8 on the sleeve 6 two longitudinal internal through holes are made rectangular groove 9. Between the sleeves 5, 6, a spacer 10 is installed, the end protrusions 11, 12 of which fit into the corresponding grooves 13, 14 of the sleeves 5, 6, thus ensuring their relative position.

The pivot of the button 3 is made in the form of a 3-step roller consisting of the lower stage 15, the second stage is equipped with a clamp 4, and the third stage is threaded to be fixed to the upper part of the button 3.

The switch works in the following way.

In the initial position, the button 3 is pressed by the spring 2 to the highest position, the teeth of the retainer 4 are in the grooves 9. When the button 3 is pressed, the teeth of the retainer 4 exit the grooves 9 of the sleeve 6 and come into contact with the teeth 7, which cause the retainer 4 rotate half your schaga. Pressing the button 3 stops and it is compressed upwards by the spring 2. In this case, the teeth 7 of the retainer 4 come out of the engagement and come into contact with the teeth 8, which cause it to turn half of its pitch and engage with them, which corresponds to the end fixing. To release button 3, it is pressed again. The retainer teeth 4 are disengaged from the teeth 8 and come into contact with the teeth 7, which rotate it by half of its pitch. Re-release

button 3, the teeth of the retainer 4 get out of engagement with the teeth 7 and come into contact with the teeth 8, which turn it one and a half steps, after which the teeth of the retainer 4 are in the grooves 9.

The proposed design is symmetric, which eliminates distortions, and allows the switch to be made in a closed design by installing, for example, sealing cuffs at the inlet and outlet of the button stem, due to

which increases the durability of the switch.

Claims (2)

1. USSR author's certificate number 424248, cl. H 01 H 13/56, 1974. 2. USSR author's certificate number 298966, cl. H 01 H 13/02, 1971. 2