SU647736A1 - Tape-driving mechanism driving unit - Google Patents

Description

one

The invention relates to the field of magnetic recording.

The leading unit of the tape mechanism is known, which contains a rotating dead shaft fastened in a flywheel with a possibility of conjugation with a magnetic tape and is kinematically connected with an electric motor fll. The known leading assembly converts the rotation of the drive shaft into the translational movement of the magnetic tape, however, it consumes a considerable amount of energy. Giyu on this move.

Closest to the invention, the technical entity is a rotary knot of a tape mechanism containing a drive shaft mounted with magnetic tape mating and secured in a flywheel, and a piezoelectric vibrator connected to a longitudinal vibration concentrator mounted on a spring-loaded rotary lever G21. This lead node consumes little energy at

moving tape The disadvantage of such a drive unit is that the reversal of the rotation of the drive shaft increases the size of the drive unit of the tape drive mechanism.

The purpose of the invention is to provide reversal of the rotation of the drive shaft while simultaneously reducing the dimensions of the drive unit of the tape drive mechanism.

This is achieved due to the fact that in the proposed master node concentration

Claims (2)

The longitudinal oscillation torch is located inside the flywheel and is made in the form of tapering arcuate elements arranged symmetrically with respect to the piezoelectric vibrator. In this case, the tapering arcuate elements are provided with tips, and the concentrator has the possibility of alternate coupling with the flywheel. A drawing of the drawing shows a variant of the preferred converging knot of the tape-carrying mechanism. The outgrowing assembly contains a rotating drive shaft 1 mounted to mate with a magnetic piece not shown in the drawing. The master bar is mounted in the housing 2 by means of ball bearings 3 with the possibility of rotation in it. The drive shaft is rigidly fixed in the flywheel 4, made of a metal ring 5 placed inside a more often plastic element 6. The proposed drive unit also contains a piezoelectric vibrator connected to a longitudinal oscillation concentrator mounted on a spring-loaded rotary lever 7. The concentrator of longitudinal oscillations is placed inside the flywheel 4 and E. made in the form of tapering arcuate elements 8 arranged symmetrically with respect to the piezoelectric vibrator. The piezoelectric vibrator is made in the form of two piezoceramic discs 9, mounted on opposite sides of the spring-loaded pivot arm 7. In the proposed drive unit, the narrowed arcuate elements 8 are equipped with wear-resistant tips 10, which have alternate matching with the metal ring of the flywheel 4. 4. The offer will be offered by the offer. piezoceramic discs 9 are reinforced by tapering elements 8, the tips 10 of which vary along elliptical trajectories m. Here, depending on which tip 1O is coupled to the flywheel 4, the drive shaft 1 rotates to one side or the other. Claim 1.Gridging unit of the tape-forming mechanism, containing a drive shaft rigidly fixed in the flywheel and mounted for rotation and mating with a magnetic tape, and a piezoelectric vibrator connected to a longitudinal oscillation concentrator mounted on a spring-loaded rotary lever, characterized in that , in order to ensure the reversal of the rotation of the drive shaft while simultaneously reducing the dimensions of the drive unit, the concentrator of longitudinal vibrations is placed inside the flywheel and is made in the form tapering arcuate elements equipped with tips located symmetrically with respect to the vibrator and alternately interacting with the flywheel. 2. Node pop, 1, characterized in that the concentrator is located outside the flywheel. Sources of information taken into account in the examination 1. US patent number 3461249, cn, 179-100.2, 1969. 2. USSR author's certificate number 527735, cl. q 11 B 15 / 4O, 1975. L J.