SU651435A1 - Two-phase vibromotor - Google Patents

Claims (2)

(54) TWO-PHASE VIBRATOR MOTOR The support ring 20 of the pie element 1 and the bearings 21 and 22 of the shaft 12. The end rings B and 7 each have 4 pairs of electrodes in the form of segments 23, 24, 25, 26 and 27, 28, 29, 30, respectively , and jumpers 8, 9, 10, 11 one pair each. The length of all electrodes is the same, the gaps between them are minimal. The electrical connection circuit of the electrodes is made so that the diametrically opposite regions, the piezoelectric elements operate in the same phase, the adjacent ones in the opposite phase, and forming the angle are shifted by the 90 phase alternating current (Fig. 2). When a two-phase alternating voltage is applied, different parts of piezoelectric element 1 begin to oscillate so that at the junction of the jumpers 8.9, 10 and 11 and segments 23, 24,25,26,27,28,29 and 30 points of the piezomaterial receive a rotational motion. The phases of oscillations are consistent with the fact that rotation takes place in one direction. FIG. A circle with an arrow shows the direction of rotation, and the dot on the circle shows the relative phase of rotation. As a result of this oscillation of the piezoelectric element 1, the shaft 12, which is frictionally coupled to the piezoelectric element 1, through the elastic disks 13 and 14, receives one-directional torsional pulses in the direction almost coinciding with the direction of rotation. By adjusting the nuts 17 and 18, the force of pressing the elastic discs 13 and 1 to the piezo element 1 is regulated, this also adjusts the torque and the speed of rotation of the shaft 12. The advantage of the proposed motor vibrator is that the piezo element 1, being a thin hollow cylinder / develops much greater amplitude of oscillations and has a small inferior rigidity of the support in comparison with a full-bodied cylinder, as well as a torque moment increases a larger number of sections (8 sections opposite 3) with the same dimensions of piezoelectric element 1. Thus Pulsing pulses act in a direction that almost coincides with the direction of rotation. In addition, the elastic discs DZ and 14, pressed to the piezo element 1 by adjusting nuts 17 and 18, allow to obtain the desired reliable friction contact, which can be adjusted and has the property of self-regulation, due to the elasticity of the disks 13 and 14. shaft torque 12. Formula of the invention A two-phase vibration motor comprising a composite cylindrical piezoelectric element, a rotor frictionally coupled to it, and a stator, characterized in that, in order to increase the torque, the piezoelectric element is made empty body with side cuts, forming a system of two end rings and four rectangular bridges with separated electrodes so that the four segments on each ring and four bridges are independent sections, and the wiring diagrams of the sections are designed so that diametrically opposite sections work relatively each other in the same phase, next to each other - in the opposite phase, forming an angle - alternating current shifted on the 90th phase, the rotor is made in the form of a shaft fixed inside the cylinder It is also equipped with additional elastic discs, which are pressed to the ends of the cylinder with adjusting nuts. Sources of information taken into account in the examination 1. US Patent No. 3192416, cl. 310-8.6, 1963, 2. US patent number 2439499, cl. 310-83, 1948. 13 SZ S ///////// L Z510 guv H 5 11 FIG. g n 12 tIB V nineteen -00 yy 24