SU760222A1 - Piezoelectric pulse microswitch - Google Patents

Description

The invention relates to electrical engineering and is used in pulse devices of instant action.

Known switching devices containing piezoelectric elements as sensors, fixedly mounted in the housing, and the drive device [1].

However, such devices are limited in application and structurally complex.

Known piezoelectric pulsed microswitch, comprising a housing, two piezoelectric elements associated with the housing, the button drive element and two stops [2].

In such a microswitch, the position of the moving element is not fixed, and it is impossible to recall pressing the piezoelectric elements, which limits the scope and reliability of operation.

The purpose of the invention is to expand the scope and increase reliability.

This goal is achieved by the fact that in ’a piezoelectric pulsed microswitch that includes a housing, two piezoelectric elements associated with the housing, a button, a drive ^

2

element and two stops, three permanent magnets and two insulating elastic bushings are mounted on the case, one of the permanent magnets is mounted on the drive element, and each of the other two permanent magnets together with one of the piezoelectric elements is located in one of the insulating elastic bushings with the option ' mechanical effects on this piezoelectric element, and the drive element is designed as an instantaneous mechanism.

The poles of the permanent magnets facing each other have pole pieces that can be made with teeth.

_{) 5} In addition, the poles of the permanent magnets facing each other can be of the same name or unlike.

FIG. 1 shows the micro design. switch; in fig. 2 - pole nakonech _Μ nicks embodiment.

A permanent magnet 2 is mounted on the actuator .1 of the fast-moving instantaneous mechanism, resting in the extreme position on the damping stop

760222

3, fastened to the microswitch housing 4. The piezoelectric element 5 is installed ....... fixed in the housing 4 in the insulating Elastic sleeve 6. Another permanent magnet 7 is placed in the sleeve 6 with the possibility of mechanical action on the piezoelectric element 5 and rests on the elastic spring bar 8. Wynt 9 serves to fix the permanent "magnet and piezoelectric element in the case. The pole tips of GO and II magnets 2 and 7 can be made with teeth (Fig. 2).

When an external force is applied to the button 12, the instantaneous mechanism transfers the permanent magnet 2 to another position.

When the permanent magnet 2 is moved to the piezoelectric elements 5, there is a rapid change in the mechanical action, resulting in

• ““ Ny ”to the appearance of pulsed voltage ......... NIA. · ... '"' ·,

Claims (5)

Claim 1. A piezoelectric pulsed micro 'switch, containing a body, two piezo' elements associated with the housing, a button, a drive element and two stops, which are intended to expand reliability of operation; three permanent mag'pits and two insulating elastic bushes were introduced into it, 25 mounted on the housing, one of the permanent magnets is mounted on the drive element, 'And each of the two' other permanent magnets, along with one of the piezoelectric elements ₅ Raspaud false in one of the insulating elastic sleeves, with mechanical action on the piezoelectric element, wherein the drive member is a snap-action mechanism. ten 2. Micro switch by π. 1, which means that the poles of the permanent magnets, facing each other, are made with pole pieces. 3. The microswitch according to claim 2, about tl and h a15 th u and th with I Ύ δΜ, that the pole tips made with prongs. 4. Microswitch on the PP. 1 and 2, that is, that the poles of the permanent magnets facing each other have 20 the same polarity. 5. Microswitch to PP. 1 and 2, which is connected with the fact that the poles of the permanent magnets, facing each other, have different polarity.